2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
7 * a) Redistributions of source code must retain the above copyright notice,
8 * this list of conditions and the following disclaimer.
10 * b) Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the distribution.
14 * c) Neither the name of Cisco Systems, Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived
16 * from this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
20 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
28 * THE POSSIBILITY OF SUCH DAMAGE.
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/udp.h>
51 VNET_DEFINE(struct sctp_base_info, system_base_info);
53 /* FIX: we don't handle multiple link local scopes */
54 /* "scopeless" replacement IN6_ARE_ADDR_EQUAL */
57 SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b)
59 struct sockaddr_in6 tmp_a, tmp_b;
61 memcpy(&tmp_a, a, sizeof(struct sockaddr_in6));
62 if (sa6_embedscope(&tmp_a, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
65 memcpy(&tmp_b, b, sizeof(struct sockaddr_in6));
66 if (sa6_embedscope(&tmp_b, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
69 return (IN6_ARE_ADDR_EQUAL(&tmp_a.sin6_addr, &tmp_b.sin6_addr));
75 sctp_fill_pcbinfo(struct sctp_pcbinfo *spcb)
78 * We really don't need to lock this, but I will just because it
81 SCTP_INP_INFO_RLOCK();
82 spcb->ep_count = SCTP_BASE_INFO(ipi_count_ep);
83 spcb->asoc_count = SCTP_BASE_INFO(ipi_count_asoc);
84 spcb->laddr_count = SCTP_BASE_INFO(ipi_count_laddr);
85 spcb->raddr_count = SCTP_BASE_INFO(ipi_count_raddr);
86 spcb->chk_count = SCTP_BASE_INFO(ipi_count_chunk);
87 spcb->readq_count = SCTP_BASE_INFO(ipi_count_readq);
88 spcb->stream_oque = SCTP_BASE_INFO(ipi_count_strmoq);
89 spcb->free_chunks = SCTP_BASE_INFO(ipi_free_chunks);
91 SCTP_INP_INFO_RUNLOCK();
95 * Addresses are added to VRF's (Virtual Router's). For BSD we
96 * have only the default VRF 0. We maintain a hash list of
97 * VRF's. Each VRF has its own list of sctp_ifn's. Each of
98 * these has a list of addresses. When we add a new address
99 * to a VRF we lookup the ifn/ifn_index, if the ifn does
100 * not exist we create it and add it to the list of IFN's
101 * within the VRF. Once we have the sctp_ifn, we add the
102 * address to the list. So we look something like:
105 * vrf-> ifn-> ifn -> ifn
107 * ... +--ifa-> ifa -> ifa
110 * We keep these seperate lists since the SCTP subsystem will
111 * point to these from its source address selection nets structure.
112 * When an address is deleted it does not happen right away on
113 * the SCTP side, it gets scheduled. What we do when a
114 * delete happens is immediately remove the address from
115 * the master list and decrement the refcount. As our
116 * addip iterator works through and frees the src address
117 * selection pointing to the sctp_ifa, eventually the refcount
118 * will reach 0 and we will delete it. Note that it is assumed
119 * that any locking on system level ifn/ifa is done at the
120 * caller of these functions and these routines will only
121 * lock the SCTP structures as they add or delete things.
123 * Other notes on VRF concepts.
124 * - An endpoint can be in multiple VRF's
125 * - An association lives within a VRF and only one VRF.
126 * - Any incoming packet we can deduce the VRF for by
127 * looking at the mbuf/pak inbound (for BSD its VRF=0 :D)
128 * - Any downward send call or connect call must supply the
129 * VRF via ancillary data or via some sort of set default
130 * VRF socket option call (again for BSD no brainer since
131 * the VRF is always 0).
132 * - An endpoint may add multiple VRF's to it.
133 * - Listening sockets can accept associations in any
134 * of the VRF's they are in but the assoc will end up
135 * in only one VRF (gotten from the packet or connect/send).
140 sctp_allocate_vrf(int vrf_id)
142 struct sctp_vrf *vrf = NULL;
143 struct sctp_vrflist *bucket;
145 /* First allocate the VRF structure */
146 vrf = sctp_find_vrf(vrf_id);
148 /* Already allocated */
151 SCTP_MALLOC(vrf, struct sctp_vrf *, sizeof(struct sctp_vrf),
156 panic("No memory for VRF:%d", vrf_id);
161 memset(vrf, 0, sizeof(struct sctp_vrf));
162 vrf->vrf_id = vrf_id;
163 LIST_INIT(&vrf->ifnlist);
164 vrf->total_ifa_count = 0;
166 /* now also setup table ids */
167 SCTP_INIT_VRF_TABLEID(vrf);
168 /* Init the HASH of addresses */
169 vrf->vrf_addr_hash = SCTP_HASH_INIT(SCTP_VRF_ADDR_HASH_SIZE,
170 &vrf->vrf_addr_hashmark);
171 if (vrf->vrf_addr_hash == NULL) {
174 panic("No memory for VRF:%d", vrf_id);
176 SCTP_FREE(vrf, SCTP_M_VRF);
179 /* Add it to the hash table */
180 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
181 LIST_INSERT_HEAD(bucket, vrf, next_vrf);
182 atomic_add_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
188 sctp_find_ifn(void *ifn, uint32_t ifn_index)
190 struct sctp_ifn *sctp_ifnp;
191 struct sctp_ifnlist *hash_ifn_head;
194 * We assume the lock is held for the addresses if thats wrong
195 * problems could occur :-)
197 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
198 LIST_FOREACH(sctp_ifnp, hash_ifn_head, next_bucket) {
199 if (sctp_ifnp->ifn_index == ifn_index) {
202 if (sctp_ifnp->ifn_p && ifn && (sctp_ifnp->ifn_p == ifn)) {
212 sctp_find_vrf(uint32_t vrf_id)
214 struct sctp_vrflist *bucket;
215 struct sctp_vrf *liste;
217 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
218 LIST_FOREACH(liste, bucket, next_vrf) {
219 if (vrf_id == liste->vrf_id) {
227 sctp_free_vrf(struct sctp_vrf *vrf)
229 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&vrf->refcount)) {
230 if (vrf->vrf_addr_hash) {
231 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
232 vrf->vrf_addr_hash = NULL;
234 /* We zero'd the count */
235 LIST_REMOVE(vrf, next_vrf);
236 SCTP_FREE(vrf, SCTP_M_VRF);
237 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
242 sctp_free_ifn(struct sctp_ifn *sctp_ifnp)
244 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifnp->refcount)) {
245 /* We zero'd the count */
246 if (sctp_ifnp->vrf) {
247 sctp_free_vrf(sctp_ifnp->vrf);
249 SCTP_FREE(sctp_ifnp, SCTP_M_IFN);
250 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
255 sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu)
257 struct sctp_ifn *sctp_ifnp;
259 sctp_ifnp = sctp_find_ifn((void *)NULL, ifn_index);
260 if (sctp_ifnp != NULL) {
261 sctp_ifnp->ifn_mtu = mtu;
267 sctp_free_ifa(struct sctp_ifa *sctp_ifap)
269 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifap->refcount)) {
270 /* We zero'd the count */
271 if (sctp_ifap->ifn_p) {
272 sctp_free_ifn(sctp_ifap->ifn_p);
274 SCTP_FREE(sctp_ifap, SCTP_M_IFA);
275 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
280 sctp_delete_ifn(struct sctp_ifn *sctp_ifnp, int hold_addr_lock)
282 struct sctp_ifn *found;
284 found = sctp_find_ifn(sctp_ifnp->ifn_p, sctp_ifnp->ifn_index);
286 /* Not in the list.. sorry */
289 if (hold_addr_lock == 0)
290 SCTP_IPI_ADDR_WLOCK();
291 LIST_REMOVE(sctp_ifnp, next_bucket);
292 LIST_REMOVE(sctp_ifnp, next_ifn);
293 SCTP_DEREGISTER_INTERFACE(sctp_ifnp->ifn_index,
294 sctp_ifnp->registered_af);
295 if (hold_addr_lock == 0)
296 SCTP_IPI_ADDR_WUNLOCK();
297 /* Take away the reference, and possibly free it */
298 sctp_free_ifn(sctp_ifnp);
302 sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr,
303 const char *if_name, uint32_t ifn_index)
305 struct sctp_vrf *vrf;
306 struct sctp_ifa *sctp_ifap = NULL;
308 SCTP_IPI_ADDR_RLOCK();
309 vrf = sctp_find_vrf(vrf_id);
311 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
315 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
316 if (sctp_ifap == NULL) {
317 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
320 if (sctp_ifap->ifn_p == NULL) {
321 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unuseable\n");
327 len1 = strlen(if_name);
328 len2 = strlen(sctp_ifap->ifn_p->ifn_name);
330 SCTPDBG(SCTP_DEBUG_PCB4, "IFN of ifa names different lenght %d vs %d - ignored\n",
334 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, len1) != 0) {
335 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
336 sctp_ifap->ifn_p->ifn_name,
341 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
342 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
343 sctp_ifap->ifn_p->ifn_index, ifn_index);
348 sctp_ifap->localifa_flags &= (~SCTP_ADDR_VALID);
349 sctp_ifap->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE;
351 SCTP_IPI_ADDR_RUNLOCK();
355 sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr,
356 const char *if_name, uint32_t ifn_index)
358 struct sctp_vrf *vrf;
359 struct sctp_ifa *sctp_ifap = NULL;
361 SCTP_IPI_ADDR_RLOCK();
362 vrf = sctp_find_vrf(vrf_id);
364 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
368 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
369 if (sctp_ifap == NULL) {
370 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
373 if (sctp_ifap->ifn_p == NULL) {
374 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unuseable\n");
380 len1 = strlen(if_name);
381 len2 = strlen(sctp_ifap->ifn_p->ifn_name);
383 SCTPDBG(SCTP_DEBUG_PCB4, "IFN of ifa names different lenght %d vs %d - ignored\n",
387 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, len1) != 0) {
388 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
389 sctp_ifap->ifn_p->ifn_name,
394 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
395 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
396 sctp_ifap->ifn_p->ifn_index, ifn_index);
401 sctp_ifap->localifa_flags &= (~SCTP_ADDR_IFA_UNUSEABLE);
402 sctp_ifap->localifa_flags |= SCTP_ADDR_VALID;
404 SCTP_IPI_ADDR_RUNLOCK();
408 * Add an ifa to an ifn.
409 * Register the interface as necessary.
410 * NOTE: ADDR write lock MUST be held.
413 sctp_add_ifa_to_ifn(struct sctp_ifn *sctp_ifnp, struct sctp_ifa *sctp_ifap)
417 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
418 sctp_ifap->ifn_p = sctp_ifnp;
419 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
420 /* update address counts */
421 sctp_ifnp->ifa_count++;
422 ifa_af = sctp_ifap->address.sa.sa_family;
423 if (ifa_af == AF_INET)
427 if (sctp_ifnp->ifa_count == 1) {
428 /* register the new interface */
429 SCTP_REGISTER_INTERFACE(sctp_ifnp->ifn_index, ifa_af);
430 sctp_ifnp->registered_af = ifa_af;
435 * Remove an ifa from its ifn.
436 * If no more addresses exist, remove the ifn too. Otherwise, re-register
437 * the interface based on the remaining address families left.
438 * NOTE: ADDR write lock MUST be held.
441 sctp_remove_ifa_from_ifn(struct sctp_ifa *sctp_ifap)
445 LIST_REMOVE(sctp_ifap, next_ifa);
446 if (sctp_ifap->ifn_p) {
447 /* update address counts */
448 sctp_ifap->ifn_p->ifa_count--;
449 if (sctp_ifap->address.sa.sa_family == AF_INET6)
450 sctp_ifap->ifn_p->num_v6--;
451 else if (sctp_ifap->address.sa.sa_family == AF_INET)
452 sctp_ifap->ifn_p->num_v4--;
454 ifn_index = sctp_ifap->ifn_p->ifn_index;
455 if (LIST_EMPTY(&sctp_ifap->ifn_p->ifalist)) {
456 /* remove the ifn, possibly freeing it */
457 sctp_delete_ifn(sctp_ifap->ifn_p, SCTP_ADDR_LOCKED);
459 /* re-register address family type, if needed */
460 if ((sctp_ifap->ifn_p->num_v6 == 0) &&
461 (sctp_ifap->ifn_p->registered_af == AF_INET6)) {
462 SCTP_DEREGISTER_INTERFACE(ifn_index, AF_INET6);
463 SCTP_REGISTER_INTERFACE(ifn_index, AF_INET);
464 sctp_ifap->ifn_p->registered_af = AF_INET;
465 } else if ((sctp_ifap->ifn_p->num_v4 == 0) &&
466 (sctp_ifap->ifn_p->registered_af == AF_INET)) {
467 SCTP_DEREGISTER_INTERFACE(ifn_index, AF_INET);
468 SCTP_REGISTER_INTERFACE(ifn_index, AF_INET6);
469 sctp_ifap->ifn_p->registered_af = AF_INET6;
471 /* free the ifn refcount */
472 sctp_free_ifn(sctp_ifap->ifn_p);
474 sctp_ifap->ifn_p = NULL;
479 sctp_add_addr_to_vrf(uint32_t vrf_id, void *ifn, uint32_t ifn_index,
480 uint32_t ifn_type, const char *if_name, void *ifa,
481 struct sockaddr *addr, uint32_t ifa_flags,
484 struct sctp_vrf *vrf;
485 struct sctp_ifn *sctp_ifnp = NULL;
486 struct sctp_ifa *sctp_ifap = NULL;
487 struct sctp_ifalist *hash_addr_head;
488 struct sctp_ifnlist *hash_ifn_head;
489 uint32_t hash_of_addr;
493 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: adding address: ", vrf_id);
494 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
496 SCTP_IPI_ADDR_WLOCK();
497 sctp_ifnp = sctp_find_ifn(ifn, ifn_index);
499 vrf = sctp_ifnp->vrf;
501 vrf = sctp_find_vrf(vrf_id);
503 vrf = sctp_allocate_vrf(vrf_id);
505 SCTP_IPI_ADDR_WUNLOCK();
510 if (sctp_ifnp == NULL) {
512 * build one and add it, can't hold lock until after malloc
515 SCTP_IPI_ADDR_WUNLOCK();
516 SCTP_MALLOC(sctp_ifnp, struct sctp_ifn *,
517 sizeof(struct sctp_ifn), SCTP_M_IFN);
518 if (sctp_ifnp == NULL) {
520 panic("No memory for IFN:%u", sctp_ifnp->ifn_index);
524 memset(sctp_ifnp, 0, sizeof(struct sctp_ifn));
525 sctp_ifnp->ifn_index = ifn_index;
526 sctp_ifnp->ifn_p = ifn;
527 sctp_ifnp->ifn_type = ifn_type;
528 sctp_ifnp->refcount = 0;
529 sctp_ifnp->vrf = vrf;
530 atomic_add_int(&vrf->refcount, 1);
531 sctp_ifnp->ifn_mtu = SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, addr->sa_family);
532 if (if_name != NULL) {
533 memcpy(sctp_ifnp->ifn_name, if_name, SCTP_IFNAMSIZ);
535 memcpy(sctp_ifnp->ifn_name, "unknown", min(7, SCTP_IFNAMSIZ));
537 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
538 LIST_INIT(&sctp_ifnp->ifalist);
539 SCTP_IPI_ADDR_WLOCK();
540 LIST_INSERT_HEAD(hash_ifn_head, sctp_ifnp, next_bucket);
541 LIST_INSERT_HEAD(&vrf->ifnlist, sctp_ifnp, next_ifn);
542 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
545 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
547 /* Hmm, it already exists? */
548 if ((sctp_ifap->ifn_p) &&
549 (sctp_ifap->ifn_p->ifn_index == ifn_index)) {
550 SCTPDBG(SCTP_DEBUG_PCB4, "Using existing ifn %s (0x%x) for ifa %p\n",
551 sctp_ifap->ifn_p->ifn_name, ifn_index,
554 /* Remove the created one that we don't want */
555 sctp_delete_ifn(sctp_ifnp, SCTP_ADDR_LOCKED);
557 if (sctp_ifap->localifa_flags & SCTP_BEING_DELETED) {
558 /* easy to solve, just switch back to active */
559 SCTPDBG(SCTP_DEBUG_PCB4, "Clearing deleted ifa flag\n");
560 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
561 sctp_ifap->ifn_p = sctp_ifnp;
562 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
565 SCTP_IPI_ADDR_WUNLOCK();
568 if (sctp_ifap->ifn_p) {
570 * The last IFN gets the address, removee
573 SCTPDBG(SCTP_DEBUG_PCB4, "Moving ifa %p from %s (0x%x) to %s (0x%x)\n",
574 sctp_ifap, sctp_ifap->ifn_p->ifn_name,
575 sctp_ifap->ifn_p->ifn_index, if_name,
577 /* remove the address from the old ifn */
578 sctp_remove_ifa_from_ifn(sctp_ifap);
579 /* move the address over to the new ifn */
580 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
581 goto exit_stage_left;
583 /* repair ifnp which was NULL ? */
584 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
585 SCTPDBG(SCTP_DEBUG_PCB4, "Repairing ifn %p for ifa %p\n",
586 sctp_ifnp, sctp_ifap);
587 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
589 goto exit_stage_left;
592 SCTP_IPI_ADDR_WUNLOCK();
593 SCTP_MALLOC(sctp_ifap, struct sctp_ifa *, sizeof(struct sctp_ifa), SCTP_M_IFA);
594 if (sctp_ifap == NULL) {
596 panic("No memory for IFA");
600 memset(sctp_ifap, 0, sizeof(struct sctp_ifa));
601 sctp_ifap->ifn_p = sctp_ifnp;
602 atomic_add_int(&sctp_ifnp->refcount, 1);
603 sctp_ifap->vrf_id = vrf_id;
604 sctp_ifap->ifa = ifa;
605 memcpy(&sctp_ifap->address, addr, addr->sa_len);
606 sctp_ifap->localifa_flags = SCTP_ADDR_VALID | SCTP_ADDR_DEFER_USE;
607 sctp_ifap->flags = ifa_flags;
609 switch (sctp_ifap->address.sa.sa_family) {
612 struct sockaddr_in *sin;
614 sin = (struct sockaddr_in *)&sctp_ifap->address.sin;
615 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
616 (IN4_ISLOOPBACK_ADDRESS(&sin->sin_addr))) {
617 sctp_ifap->src_is_loop = 1;
619 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
620 sctp_ifap->src_is_priv = 1;
624 new_ifn_af = AF_INET;
630 /* ok to use deprecated addresses? */
631 struct sockaddr_in6 *sin6;
633 sin6 = (struct sockaddr_in6 *)&sctp_ifap->address.sin6;
634 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
635 (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))) {
636 sctp_ifap->src_is_loop = 1;
638 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
639 sctp_ifap->src_is_priv = 1;
643 new_ifn_af = AF_INET6;
651 hash_of_addr = sctp_get_ifa_hash_val(&sctp_ifap->address.sa);
653 if ((sctp_ifap->src_is_priv == 0) &&
654 (sctp_ifap->src_is_loop == 0)) {
655 sctp_ifap->src_is_glob = 1;
657 SCTP_IPI_ADDR_WLOCK();
658 hash_addr_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
659 LIST_INSERT_HEAD(hash_addr_head, sctp_ifap, next_bucket);
660 sctp_ifap->refcount = 1;
661 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
662 sctp_ifnp->ifa_count++;
663 vrf->total_ifa_count++;
664 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
666 SCTP_REGISTER_INTERFACE(ifn_index, new_ifn_af);
667 sctp_ifnp->registered_af = new_ifn_af;
669 SCTP_IPI_ADDR_WUNLOCK();
672 * Bump up the refcount so that when the timer completes it
673 * will drop back down.
675 struct sctp_laddr *wi;
677 atomic_add_int(&sctp_ifap->refcount, 1);
678 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
681 * Gak, what can we do? We have lost an address
682 * change can you say HOSED?
684 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
685 /* Opps, must decrement the count */
686 sctp_del_addr_from_vrf(vrf_id, addr, ifn_index,
690 SCTP_INCR_LADDR_COUNT();
691 bzero(wi, sizeof(*wi));
692 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
694 wi->action = SCTP_ADD_IP_ADDRESS;
697 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
698 SCTP_WQ_ADDR_UNLOCK();
700 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
701 (struct sctp_inpcb *)NULL,
702 (struct sctp_tcb *)NULL,
703 (struct sctp_nets *)NULL);
705 /* it's ready for use */
706 sctp_ifap->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
712 sctp_del_addr_from_vrf(uint32_t vrf_id, struct sockaddr *addr,
713 uint32_t ifn_index, const char *if_name)
715 struct sctp_vrf *vrf;
716 struct sctp_ifa *sctp_ifap = NULL;
718 SCTP_IPI_ADDR_WLOCK();
719 vrf = sctp_find_vrf(vrf_id);
721 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
725 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: deleting address:", vrf_id);
726 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
728 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
730 /* Validate the delete */
731 if (sctp_ifap->ifn_p) {
735 * The name has priority over the ifn_index
736 * if its given. We do this especially for
737 * panda who might recycle indexes fast.
742 len1 = min(SCTP_IFNAMSIZ, strlen(if_name));
743 len2 = min(SCTP_IFNAMSIZ, strlen(sctp_ifap->ifn_p->ifn_name));
744 if (len1 && len2 && (len1 == len2)) {
745 /* we can compare them */
746 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, len1) == 0) {
748 * They match its a correct
756 /* last ditch check ifn_index */
757 if (ifn_index == sctp_ifap->ifn_p->ifn_index) {
762 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s does not match addresses\n",
763 ifn_index, ((if_name == NULL) ? "NULL" : if_name));
764 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s - ignoring delete\n",
765 sctp_ifap->ifn_p->ifn_index, sctp_ifap->ifn_p->ifn_name);
766 SCTP_IPI_ADDR_WUNLOCK();
770 SCTPDBG(SCTP_DEBUG_PCB4, "Deleting ifa %p\n", sctp_ifap);
771 sctp_ifap->localifa_flags &= SCTP_ADDR_VALID;
772 sctp_ifap->localifa_flags |= SCTP_BEING_DELETED;
773 vrf->total_ifa_count--;
774 LIST_REMOVE(sctp_ifap, next_bucket);
775 sctp_remove_ifa_from_ifn(sctp_ifap);
779 SCTPDBG(SCTP_DEBUG_PCB4, "Del Addr-ifn:%d Could not find address:",
781 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
786 SCTP_IPI_ADDR_WUNLOCK();
788 struct sctp_laddr *wi;
790 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
793 * Gak, what can we do? We have lost an address
794 * change can you say HOSED?
796 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
798 /* Oops, must decrement the count */
799 sctp_free_ifa(sctp_ifap);
802 SCTP_INCR_LADDR_COUNT();
803 bzero(wi, sizeof(*wi));
804 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
806 wi->action = SCTP_DEL_IP_ADDRESS;
809 * Should this really be a tailq? As it is we will process
810 * the newest first :-0
812 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
813 SCTP_WQ_ADDR_UNLOCK();
815 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
816 (struct sctp_inpcb *)NULL,
817 (struct sctp_tcb *)NULL,
818 (struct sctp_nets *)NULL);
824 static struct sctp_tcb *
825 sctp_tcb_special_locate(struct sctp_inpcb **inp_p, struct sockaddr *from,
826 struct sockaddr *to, struct sctp_nets **netp, uint32_t vrf_id)
828 /**** ASSUMES THE CALLER holds the INP_INFO_RLOCK */
830 * If we support the TCP model, then we must now dig through to see
831 * if we can find our endpoint in the list of tcp ep's.
833 uint16_t lport, rport;
834 struct sctppcbhead *ephead;
835 struct sctp_inpcb *inp;
836 struct sctp_laddr *laddr;
837 struct sctp_tcb *stcb;
838 struct sctp_nets *net;
840 if ((to == NULL) || (from == NULL)) {
843 if (to->sa_family == AF_INET && from->sa_family == AF_INET) {
844 lport = ((struct sockaddr_in *)to)->sin_port;
845 rport = ((struct sockaddr_in *)from)->sin_port;
846 } else if (to->sa_family == AF_INET6 && from->sa_family == AF_INET6) {
847 lport = ((struct sockaddr_in6 *)to)->sin6_port;
848 rport = ((struct sockaddr_in6 *)from)->sin6_port;
852 ephead = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport), SCTP_BASE_INFO(hashtcpmark))];
854 * Ok now for each of the guys in this bucket we must look and see:
855 * - Does the remote port match. - Does there single association's
856 * addresses match this address (to). If so we update p_ep to point
857 * to this ep and return the tcb from it.
859 LIST_FOREACH(inp, ephead, sctp_hash) {
861 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
862 SCTP_INP_RUNLOCK(inp);
865 if (lport != inp->sctp_lport) {
866 SCTP_INP_RUNLOCK(inp);
869 if (inp->def_vrf_id != vrf_id) {
870 SCTP_INP_RUNLOCK(inp);
873 /* check to see if the ep has one of the addresses */
874 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
875 /* We are NOT bound all, so look further */
878 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
880 if (laddr->ifa == NULL) {
881 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n", __FUNCTION__);
884 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
885 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
888 if (laddr->ifa->address.sa.sa_family ==
890 /* see if it matches */
891 struct sockaddr_in *intf_addr, *sin;
893 intf_addr = &laddr->ifa->address.sin;
894 sin = (struct sockaddr_in *)to;
895 if (from->sa_family == AF_INET) {
896 if (sin->sin_addr.s_addr ==
897 intf_addr->sin_addr.s_addr) {
903 if (from->sa_family == AF_INET6) {
904 struct sockaddr_in6 *intf_addr6;
905 struct sockaddr_in6 *sin6;
907 sin6 = (struct sockaddr_in6 *)
909 intf_addr6 = &laddr->ifa->address.sin6;
911 if (SCTP6_ARE_ADDR_EQUAL(sin6,
921 /* This endpoint does not have this address */
922 SCTP_INP_RUNLOCK(inp);
927 * Ok if we hit here the ep has the address, does it hold
931 stcb = LIST_FIRST(&inp->sctp_asoc_list);
933 SCTP_INP_RUNLOCK(inp);
937 if (stcb->rport != rport) {
938 /* remote port does not match. */
939 SCTP_TCB_UNLOCK(stcb);
940 SCTP_INP_RUNLOCK(inp);
943 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
944 SCTP_TCB_UNLOCK(stcb);
945 SCTP_INP_RUNLOCK(inp);
948 /* Does this TCB have a matching address? */
949 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
951 if (net->ro._l_addr.sa.sa_family != from->sa_family) {
952 /* not the same family, can't be a match */
955 switch (from->sa_family) {
958 struct sockaddr_in *sin, *rsin;
960 sin = (struct sockaddr_in *)&net->ro._l_addr;
961 rsin = (struct sockaddr_in *)from;
962 if (sin->sin_addr.s_addr ==
963 rsin->sin_addr.s_addr) {
969 * Update the endpoint
973 SCTP_INP_RUNLOCK(inp);
981 struct sockaddr_in6 *sin6, *rsin6;
983 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
984 rsin6 = (struct sockaddr_in6 *)from;
985 if (SCTP6_ARE_ADDR_EQUAL(sin6,
992 * Update the endpoint
996 SCTP_INP_RUNLOCK(inp);
1007 SCTP_TCB_UNLOCK(stcb);
1008 SCTP_INP_RUNLOCK(inp);
1016 * 1) If I return a NULL you must decrement any INP ref cnt. 2) If I find an
1017 * stcb, both will be locked (locked_tcb and stcb) but decrement will be done
1018 * (if locked == NULL). 3) Decrement happens on return ONLY if locked ==
1023 sctp_findassociation_ep_addr(struct sctp_inpcb **inp_p, struct sockaddr *remote,
1024 struct sctp_nets **netp, struct sockaddr *local, struct sctp_tcb *locked_tcb)
1026 struct sctpasochead *head;
1027 struct sctp_inpcb *inp;
1028 struct sctp_tcb *stcb = NULL;
1029 struct sctp_nets *net;
1033 if (remote->sa_family == AF_INET) {
1034 rport = (((struct sockaddr_in *)remote)->sin_port);
1035 } else if (remote->sa_family == AF_INET6) {
1036 rport = (((struct sockaddr_in6 *)remote)->sin6_port);
1042 * UN-lock so we can do proper locking here this occurs when
1043 * called from load_addresses_from_init.
1045 atomic_add_int(&locked_tcb->asoc.refcnt, 1);
1046 SCTP_TCB_UNLOCK(locked_tcb);
1048 SCTP_INP_INFO_RLOCK();
1049 if (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
1051 * Now either this guy is our listener or it's the
1052 * connector. If it is the one that issued the connect, then
1053 * it's only chance is to be the first TCB in the list. If
1054 * it is the acceptor, then do the special_lookup to hash
1055 * and find the real inp.
1057 if ((inp->sctp_socket) && (inp->sctp_socket->so_qlimit)) {
1058 /* to is peer addr, from is my addr */
1059 stcb = sctp_tcb_special_locate(inp_p, remote, local,
1060 netp, inp->def_vrf_id);
1061 if ((stcb != NULL) && (locked_tcb == NULL)) {
1062 /* we have a locked tcb, lower refcount */
1063 SCTP_INP_DECR_REF(inp);
1065 if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
1066 SCTP_INP_RLOCK(locked_tcb->sctp_ep);
1067 SCTP_TCB_LOCK(locked_tcb);
1068 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1069 SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
1071 SCTP_INP_INFO_RUNLOCK();
1074 SCTP_INP_WLOCK(inp);
1075 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1078 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1082 SCTP_TCB_LOCK(stcb);
1084 if (stcb->rport != rport) {
1085 /* remote port does not match. */
1086 SCTP_TCB_UNLOCK(stcb);
1089 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1090 SCTP_TCB_UNLOCK(stcb);
1093 /* now look at the list of remote addresses */
1094 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1096 if (net == (TAILQ_NEXT(net, sctp_next))) {
1097 panic("Corrupt net list");
1100 if (net->ro._l_addr.sa.sa_family !=
1101 remote->sa_family) {
1102 /* not the same family */
1105 switch (remote->sa_family) {
1108 struct sockaddr_in *sin,
1111 sin = (struct sockaddr_in *)
1113 rsin = (struct sockaddr_in *)remote;
1114 if (sin->sin_addr.s_addr ==
1115 rsin->sin_addr.s_addr) {
1120 if (locked_tcb == NULL) {
1121 SCTP_INP_DECR_REF(inp);
1122 } else if (locked_tcb != stcb) {
1123 SCTP_TCB_LOCK(locked_tcb);
1126 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1128 SCTP_INP_WUNLOCK(inp);
1129 SCTP_INP_INFO_RUNLOCK();
1137 struct sockaddr_in6 *sin6,
1140 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1141 rsin6 = (struct sockaddr_in6 *)remote;
1142 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1148 if (locked_tcb == NULL) {
1149 SCTP_INP_DECR_REF(inp);
1150 } else if (locked_tcb != stcb) {
1151 SCTP_TCB_LOCK(locked_tcb);
1154 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1156 SCTP_INP_WUNLOCK(inp);
1157 SCTP_INP_INFO_RUNLOCK();
1168 SCTP_TCB_UNLOCK(stcb);
1171 SCTP_INP_WLOCK(inp);
1172 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1175 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport,
1176 inp->sctp_hashmark)];
1180 LIST_FOREACH(stcb, head, sctp_tcbhash) {
1181 if (stcb->rport != rport) {
1182 /* remote port does not match */
1185 SCTP_TCB_LOCK(stcb);
1186 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1187 SCTP_TCB_UNLOCK(stcb);
1190 /* now look at the list of remote addresses */
1191 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1193 if (net == (TAILQ_NEXT(net, sctp_next))) {
1194 panic("Corrupt net list");
1197 if (net->ro._l_addr.sa.sa_family !=
1198 remote->sa_family) {
1199 /* not the same family */
1202 switch (remote->sa_family) {
1205 struct sockaddr_in *sin,
1208 sin = (struct sockaddr_in *)
1210 rsin = (struct sockaddr_in *)remote;
1211 if (sin->sin_addr.s_addr ==
1212 rsin->sin_addr.s_addr) {
1217 if (locked_tcb == NULL) {
1218 SCTP_INP_DECR_REF(inp);
1219 } else if (locked_tcb != stcb) {
1220 SCTP_TCB_LOCK(locked_tcb);
1223 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1225 SCTP_INP_WUNLOCK(inp);
1226 SCTP_INP_INFO_RUNLOCK();
1234 struct sockaddr_in6 *sin6,
1237 sin6 = (struct sockaddr_in6 *)
1239 rsin6 = (struct sockaddr_in6 *)remote;
1240 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1246 if (locked_tcb == NULL) {
1247 SCTP_INP_DECR_REF(inp);
1248 } else if (locked_tcb != stcb) {
1249 SCTP_TCB_LOCK(locked_tcb);
1252 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1254 SCTP_INP_WUNLOCK(inp);
1255 SCTP_INP_INFO_RUNLOCK();
1266 SCTP_TCB_UNLOCK(stcb);
1270 /* clean up for returning null */
1272 SCTP_TCB_LOCK(locked_tcb);
1273 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1275 SCTP_INP_WUNLOCK(inp);
1276 SCTP_INP_INFO_RUNLOCK();
1282 * Find an association for a specific endpoint using the association id given
1283 * out in the COMM_UP notification
1287 sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1290 * Use my the assoc_id to find a endpoint
1292 struct sctpasochead *head;
1293 struct sctp_tcb *stcb;
1297 SCTP_PRINTF("TSNH ep_associd\n");
1300 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1301 SCTP_PRINTF("TSNH ep_associd0\n");
1304 id = (uint32_t) asoc_id;
1305 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
1307 /* invalid id TSNH */
1308 SCTP_PRINTF("TSNH ep_associd1\n");
1311 LIST_FOREACH(stcb, head, sctp_tcbasocidhash) {
1312 if (stcb->asoc.assoc_id == id) {
1313 if (inp != stcb->sctp_ep) {
1315 * some other guy has the same id active (id
1318 SCTP_PRINTF("TSNH ep_associd2\n");
1321 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1325 SCTP_TCB_LOCK(stcb);
1335 sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1337 struct sctp_tcb *stcb;
1339 SCTP_INP_RLOCK(inp);
1340 stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
1341 SCTP_INP_RUNLOCK(inp);
1346 static struct sctp_inpcb *
1347 sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head,
1348 uint16_t lport, uint32_t vrf_id)
1350 struct sctp_inpcb *inp;
1351 struct sockaddr_in *sin;
1354 struct sockaddr_in6 *sin6;
1357 struct sctp_laddr *laddr;
1360 struct sockaddr_in6 *intf_addr6;
1367 * Endpoing probe expects that the INP_INFO is locked.
1373 switch (nam->sa_family) {
1375 sin = (struct sockaddr_in *)nam;
1379 sin6 = (struct sockaddr_in6 *)nam;
1383 /* unsupported family */
1390 LIST_FOREACH(inp, head, sctp_hash) {
1391 SCTP_INP_RLOCK(inp);
1392 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1393 SCTP_INP_RUNLOCK(inp);
1396 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) &&
1397 (inp->sctp_lport == lport)) {
1399 if ((nam->sa_family == AF_INET) &&
1400 (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1401 SCTP_IPV6_V6ONLY(inp)) {
1402 /* IPv4 on a IPv6 socket with ONLY IPv6 set */
1403 SCTP_INP_RUNLOCK(inp);
1406 /* A V6 address and the endpoint is NOT bound V6 */
1407 if (nam->sa_family == AF_INET6 &&
1408 (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
1409 SCTP_INP_RUNLOCK(inp);
1412 /* does a VRF id match? */
1414 if (inp->def_vrf_id == vrf_id)
1417 SCTP_INP_RUNLOCK(inp);
1422 SCTP_INP_RUNLOCK(inp);
1424 if ((nam->sa_family == AF_INET) &&
1425 (sin->sin_addr.s_addr == INADDR_ANY)) {
1426 /* Can't hunt for one that has no address specified */
1430 if ((nam->sa_family == AF_INET6) &&
1431 (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))) {
1432 /* Can't hunt for one that has no address specified */
1437 * ok, not bound to all so see if we can find a EP bound to this
1440 LIST_FOREACH(inp, head, sctp_hash) {
1441 SCTP_INP_RLOCK(inp);
1442 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1443 SCTP_INP_RUNLOCK(inp);
1446 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
1447 SCTP_INP_RUNLOCK(inp);
1451 * Ok this could be a likely candidate, look at all of its
1454 if (inp->sctp_lport != lport) {
1455 SCTP_INP_RUNLOCK(inp);
1458 /* does a VRF id match? */
1460 if (inp->def_vrf_id == vrf_id)
1464 SCTP_INP_RUNLOCK(inp);
1467 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1468 if (laddr->ifa == NULL) {
1469 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
1473 SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ",
1475 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1476 SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n");
1479 if (laddr->ifa->address.sa.sa_family == nam->sa_family) {
1480 /* possible, see if it matches */
1481 struct sockaddr_in *intf_addr;
1483 intf_addr = &laddr->ifa->address.sin;
1484 switch (nam->sa_family) {
1486 if (sin->sin_addr.s_addr ==
1487 intf_addr->sin_addr.s_addr) {
1488 SCTP_INP_RUNLOCK(inp);
1494 intf_addr6 = &laddr->ifa->address.sin6;
1495 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1497 SCTP_INP_RUNLOCK(inp);
1505 SCTP_INP_RUNLOCK(inp);
1511 static struct sctp_inpcb *
1512 sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
1514 struct sctppcbhead *head;
1515 struct sctp_inpcb *t_inp;
1518 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1519 SCTP_BASE_INFO(hashmark))];
1520 LIST_FOREACH(t_inp, head, sctp_hash) {
1521 if (t_inp->sctp_lport != lport) {
1524 /* is it in the VRF in question */
1526 if (t_inp->def_vrf_id == vrf_id)
1531 /* This one is in use. */
1532 /* check the v6/v4 binding issue */
1533 if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1534 SCTP_IPV6_V6ONLY(t_inp)) {
1535 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1536 /* collision in V6 space */
1539 /* inp is BOUND_V4 no conflict */
1542 } else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1543 /* t_inp is bound v4 and v6, conflict always */
1546 /* t_inp is bound only V4 */
1547 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1548 SCTP_IPV6_V6ONLY(inp)) {
1552 /* else fall through to conflict */
1561 sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
1563 /* For 1-2-1 with port reuse */
1564 struct sctppcbhead *head;
1565 struct sctp_inpcb *tinp;
1567 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
1568 /* only works with port reuse on */
1571 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) {
1574 SCTP_INP_RUNLOCK(inp);
1575 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport,
1576 SCTP_BASE_INFO(hashmark))];
1577 /* Kick out all non-listeners to the TCP hash */
1578 LIST_FOREACH(tinp, head, sctp_hash) {
1579 if (tinp->sctp_lport != inp->sctp_lport) {
1582 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1585 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
1588 if (tinp->sctp_socket->so_qlimit) {
1591 SCTP_INP_WLOCK(tinp);
1592 LIST_REMOVE(tinp, sctp_hash);
1593 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))];
1594 tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
1595 LIST_INSERT_HEAD(head, tinp, sctp_hash);
1596 SCTP_INP_WUNLOCK(tinp);
1598 SCTP_INP_WLOCK(inp);
1599 /* Pull from where he was */
1600 LIST_REMOVE(inp, sctp_hash);
1601 inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL;
1602 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))];
1603 LIST_INSERT_HEAD(head, inp, sctp_hash);
1604 SCTP_INP_WUNLOCK(inp);
1605 SCTP_INP_RLOCK(inp);
1611 sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock,
1615 * First we check the hash table to see if someone has this port
1616 * bound with just the port.
1618 struct sctp_inpcb *inp;
1619 struct sctppcbhead *head;
1620 struct sockaddr_in *sin;
1621 struct sockaddr_in6 *sin6;
1624 if (nam->sa_family == AF_INET) {
1625 sin = (struct sockaddr_in *)nam;
1626 lport = ((struct sockaddr_in *)nam)->sin_port;
1627 } else if (nam->sa_family == AF_INET6) {
1628 sin6 = (struct sockaddr_in6 *)nam;
1629 lport = ((struct sockaddr_in6 *)nam)->sin6_port;
1631 /* unsupported family */
1635 * I could cheat here and just cast to one of the types but we will
1636 * do it right. It also provides the check against an Unsupported
1639 /* Find the head of the ALLADDR chain */
1640 if (have_lock == 0) {
1641 SCTP_INP_INFO_RLOCK();
1643 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1644 SCTP_BASE_INFO(hashmark))];
1645 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1648 * If the TCP model exists it could be that the main listening
1649 * endpoint is gone but there exists a connected socket for this guy
1650 * yet. If so we can return the first one that we find. This may NOT
1651 * be the correct one so the caller should be wary on the return
1652 * INP. Currently the onlyc caller that sets this flag is in bindx
1653 * where we are verifying that a user CAN bind the address. He
1654 * either has bound it already, or someone else has, or its open to
1655 * bind, so this is good enough.
1657 if (inp == NULL && find_tcp_pool) {
1658 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))];
1659 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1662 SCTP_INP_INCR_REF(inp);
1664 if (have_lock == 0) {
1665 SCTP_INP_INFO_RUNLOCK();
1671 * Find an association for an endpoint with the pointer to whom you want to
1672 * send to and the endpoint pointer. The address can be IPv4 or IPv6. We may
1673 * need to change the *to to some other struct like a mbuf...
1676 sctp_findassociation_addr_sa(struct sockaddr *to, struct sockaddr *from,
1677 struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool,
1680 struct sctp_inpcb *inp = NULL;
1681 struct sctp_tcb *retval;
1683 SCTP_INP_INFO_RLOCK();
1684 if (find_tcp_pool) {
1685 if (inp_p != NULL) {
1686 retval = sctp_tcb_special_locate(inp_p, from, to, netp,
1689 retval = sctp_tcb_special_locate(&inp, from, to, netp,
1692 if (retval != NULL) {
1693 SCTP_INP_INFO_RUNLOCK();
1697 inp = sctp_pcb_findep(to, 0, 1, vrf_id);
1698 if (inp_p != NULL) {
1701 SCTP_INP_INFO_RUNLOCK();
1707 * ok, we have an endpoint, now lets find the assoc for it (if any)
1708 * we now place the source address or from in the to of the find
1709 * endpoint call. Since in reality this chain is used from the
1710 * inbound packet side.
1712 if (inp_p != NULL) {
1713 retval = sctp_findassociation_ep_addr(inp_p, from, netp, to,
1716 retval = sctp_findassociation_ep_addr(&inp, from, netp, to,
1724 * This routine will grub through the mbuf that is a INIT or INIT-ACK and
1725 * find all addresses that the sender has specified in any address list. Each
1726 * address will be used to lookup the TCB and see if one exits.
1728 static struct sctp_tcb *
1729 sctp_findassociation_special_addr(struct mbuf *m, int iphlen, int offset,
1730 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp,
1731 struct sockaddr *dest)
1733 struct sockaddr_in sin4;
1734 struct sockaddr_in6 sin6;
1735 struct sctp_paramhdr *phdr, parm_buf;
1736 struct sctp_tcb *retval;
1737 uint32_t ptype, plen;
1739 memset(&sin4, 0, sizeof(sin4));
1740 memset(&sin6, 0, sizeof(sin6));
1741 sin4.sin_len = sizeof(sin4);
1742 sin4.sin_family = AF_INET;
1743 sin4.sin_port = sh->src_port;
1744 sin6.sin6_len = sizeof(sin6);
1745 sin6.sin6_family = AF_INET6;
1746 sin6.sin6_port = sh->src_port;
1749 offset += sizeof(struct sctp_init_chunk);
1751 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
1752 while (phdr != NULL) {
1753 /* now we must see if we want the parameter */
1754 ptype = ntohs(phdr->param_type);
1755 plen = ntohs(phdr->param_length);
1759 if (ptype == SCTP_IPV4_ADDRESS &&
1760 plen == sizeof(struct sctp_ipv4addr_param)) {
1761 /* Get the rest of the address */
1762 struct sctp_ipv4addr_param ip4_parm, *p4;
1764 phdr = sctp_get_next_param(m, offset,
1765 (struct sctp_paramhdr *)&ip4_parm, min(plen, sizeof(ip4_parm)));
1769 p4 = (struct sctp_ipv4addr_param *)phdr;
1770 memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr));
1772 retval = sctp_findassociation_ep_addr(inp_p,
1773 (struct sockaddr *)&sin4, netp, dest, NULL);
1774 if (retval != NULL) {
1777 } else if (ptype == SCTP_IPV6_ADDRESS &&
1778 plen == sizeof(struct sctp_ipv6addr_param)) {
1779 /* Get the rest of the address */
1780 struct sctp_ipv6addr_param ip6_parm, *p6;
1782 phdr = sctp_get_next_param(m, offset,
1783 (struct sctp_paramhdr *)&ip6_parm, min(plen, sizeof(ip6_parm)));
1787 p6 = (struct sctp_ipv6addr_param *)phdr;
1788 memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr));
1790 retval = sctp_findassociation_ep_addr(inp_p,
1791 (struct sockaddr *)&sin6, netp, dest, NULL);
1792 if (retval != NULL) {
1796 offset += SCTP_SIZE32(plen);
1797 phdr = sctp_get_next_param(m, offset, &parm_buf,
1804 sctp_does_stcb_own_this_addr(struct sctp_tcb *stcb, struct sockaddr *to)
1806 struct sctp_nets *net;
1809 * Simple question, the ports match, does the tcb own the to
1812 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
1816 /* have to look at all bound addresses */
1817 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1818 if (net->ro._l_addr.sa.sa_family != to->sa_family) {
1819 /* not the same family, can't be a match */
1822 switch (to->sa_family) {
1825 struct sockaddr_in *sin, *rsin;
1827 sin = (struct sockaddr_in *)&net->ro._l_addr;
1828 rsin = (struct sockaddr_in *)to;
1829 if (sin->sin_addr.s_addr ==
1830 rsin->sin_addr.s_addr) {
1839 struct sockaddr_in6 *sin6, *rsin6;
1841 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1842 rsin6 = (struct sockaddr_in6 *)to;
1843 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1845 /* Update the endpoint pointer */
1856 /* Nope, do not have the address ;-( */
1860 static struct sctp_tcb *
1861 sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag,
1862 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport,
1863 uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
1866 * Use my vtag to hash. If we find it we then verify the source addr
1867 * is in the assoc. If all goes well we save a bit on rec of a
1870 struct sctpasochead *head;
1871 struct sctp_nets *net;
1872 struct sctp_tcb *stcb;
1876 SCTP_INP_INFO_RLOCK();
1877 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag,
1878 SCTP_BASE_INFO(hashasocmark))];
1881 SCTP_INP_INFO_RUNLOCK();
1884 LIST_FOREACH(stcb, head, sctp_asocs) {
1885 SCTP_INP_RLOCK(stcb->sctp_ep);
1886 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1887 SCTP_INP_RUNLOCK(stcb->sctp_ep);
1890 SCTP_TCB_LOCK(stcb);
1891 SCTP_INP_RUNLOCK(stcb->sctp_ep);
1892 if (stcb->asoc.my_vtag == vtag) {
1894 if (stcb->rport != rport) {
1895 SCTP_TCB_UNLOCK(stcb);
1898 if (stcb->sctp_ep->sctp_lport != lport) {
1899 SCTP_TCB_UNLOCK(stcb);
1902 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1903 SCTP_TCB_UNLOCK(stcb);
1906 /* RRS:Need toaddr check here */
1907 if (sctp_does_stcb_own_this_addr(stcb, to) == 0) {
1908 /* Endpoint does not own this address */
1909 SCTP_TCB_UNLOCK(stcb);
1914 * If we have both vtags thats all we match
1917 if (stcb->asoc.peer_vtag == remote_tag) {
1919 * If both tags match we consider it
1920 * conclusive and check NO
1921 * source/destination addresses
1926 if (skip_src_check) {
1929 net = sctp_findnet(stcb, from);
1931 *netp = NULL; /* unknown */
1934 *inp_p = stcb->sctp_ep;
1935 SCTP_INP_INFO_RUNLOCK();
1938 net = sctp_findnet(stcb, from);
1942 SCTP_STAT_INCR(sctps_vtagexpress);
1943 *inp_p = stcb->sctp_ep;
1944 SCTP_INP_INFO_RUNLOCK();
1948 * not him, this should only happen in rare
1949 * cases so I peg it.
1951 SCTP_STAT_INCR(sctps_vtagbogus);
1954 SCTP_TCB_UNLOCK(stcb);
1956 SCTP_INP_INFO_RUNLOCK();
1961 * Find an association with the pointer to the inbound IP packet. This can be
1962 * a IPv4 or IPv6 packet.
1965 sctp_findassociation_addr(struct mbuf *m, int iphlen, int offset,
1966 struct sctphdr *sh, struct sctp_chunkhdr *ch,
1967 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
1971 struct sctp_tcb *retval;
1972 struct sockaddr_storage to_store, from_store;
1973 struct sockaddr *to = (struct sockaddr *)&to_store;
1974 struct sockaddr *from = (struct sockaddr *)&from_store;
1975 struct sctp_inpcb *inp;
1977 iph = mtod(m, struct ip *);
1978 switch (iph->ip_v) {
1982 struct sockaddr_in *from4;
1984 from4 = (struct sockaddr_in *)&from_store;
1985 bzero(from4, sizeof(*from4));
1986 from4->sin_family = AF_INET;
1987 from4->sin_len = sizeof(struct sockaddr_in);
1988 from4->sin_addr.s_addr = iph->ip_src.s_addr;
1989 from4->sin_port = sh->src_port;
1993 case IPV6_VERSION >> 4:
1996 struct ip6_hdr *ip6;
1997 struct sockaddr_in6 *from6;
1999 ip6 = mtod(m, struct ip6_hdr *);
2000 from6 = (struct sockaddr_in6 *)&from_store;
2001 bzero(from6, sizeof(*from6));
2002 from6->sin6_family = AF_INET6;
2003 from6->sin6_len = sizeof(struct sockaddr_in6);
2004 from6->sin6_addr = ip6->ip6_src;
2005 from6->sin6_port = sh->src_port;
2006 /* Get the scopes in properly to the sin6 addr's */
2007 /* we probably don't need these operations */
2008 (void)sa6_recoverscope(from6);
2009 sa6_embedscope(from6, MODULE_GLOBAL(ip6_use_defzone));
2014 /* Currently not supported. */
2019 switch (iph->ip_v) {
2023 struct sockaddr_in *to4;
2025 to4 = (struct sockaddr_in *)&to_store;
2026 bzero(to4, sizeof(*to4));
2027 to4->sin_family = AF_INET;
2028 to4->sin_len = sizeof(struct sockaddr_in);
2029 to4->sin_addr.s_addr = iph->ip_dst.s_addr;
2030 to4->sin_port = sh->dest_port;
2034 case IPV6_VERSION >> 4:
2037 struct ip6_hdr *ip6;
2038 struct sockaddr_in6 *to6;
2040 ip6 = mtod(m, struct ip6_hdr *);
2041 to6 = (struct sockaddr_in6 *)&to_store;
2042 bzero(to6, sizeof(*to6));
2043 to6->sin6_family = AF_INET6;
2044 to6->sin6_len = sizeof(struct sockaddr_in6);
2045 to6->sin6_addr = ip6->ip6_dst;
2046 to6->sin6_port = sh->dest_port;
2047 /* Get the scopes in properly to the sin6 addr's */
2048 /* we probably don't need these operations */
2049 (void)sa6_recoverscope(to6);
2050 sa6_embedscope(to6, MODULE_GLOBAL(ip6_use_defzone));
2059 /* we only go down this path if vtag is non-zero */
2060 retval = sctp_findassoc_by_vtag(from, to, ntohl(sh->v_tag),
2061 inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0);
2067 if ((ch->chunk_type != SCTP_INITIATION) &&
2068 (ch->chunk_type != SCTP_INITIATION_ACK) &&
2069 (ch->chunk_type != SCTP_COOKIE_ACK) &&
2070 (ch->chunk_type != SCTP_COOKIE_ECHO)) {
2071 /* Other chunk types go to the tcp pool. */
2075 retval = sctp_findassociation_addr_sa(to, from, inp_p, netp,
2076 find_tcp_pool, vrf_id);
2079 retval = sctp_findassociation_addr_sa(to, from, &inp, netp,
2080 find_tcp_pool, vrf_id);
2082 SCTPDBG(SCTP_DEBUG_PCB1, "retval:%p inp:%p\n", retval, inp);
2083 if (retval == NULL && inp) {
2084 /* Found a EP but not this address */
2085 if ((ch->chunk_type == SCTP_INITIATION) ||
2086 (ch->chunk_type == SCTP_INITIATION_ACK)) {
2088 * special hook, we do NOT return linp or an
2089 * association that is linked to an existing
2090 * association that is under the TCP pool (i.e. no
2091 * listener exists). The endpoint finding routine
2092 * will always find a listner before examining the
2095 if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
2101 retval = sctp_findassociation_special_addr(m, iphlen,
2102 offset, sh, &inp, netp, to);
2103 if (inp_p != NULL) {
2108 SCTPDBG(SCTP_DEBUG_PCB1, "retval is %p\n", retval);
2113 * lookup an association by an ASCONF lookup address.
2114 * if the lookup address is 0.0.0.0 or ::0, use the vtag to do the lookup
2117 sctp_findassociation_ep_asconf(struct mbuf *m, int iphlen, int offset,
2118 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2120 struct sctp_tcb *stcb;
2121 struct sockaddr_in *sin;
2124 struct sockaddr_in6 *sin6;
2127 struct sockaddr_storage local_store, remote_store;
2128 struct sockaddr *to;
2132 struct ip6_hdr *ip6;
2135 struct sctp_paramhdr parm_buf, *phdr;
2137 int zero_address = 0;
2140 memset(&local_store, 0, sizeof(local_store));
2141 memset(&remote_store, 0, sizeof(remote_store));
2142 to = (struct sockaddr *)&local_store;
2143 /* First get the destination address setup too. */
2144 iph = mtod(m, struct ip *);
2145 switch (iph->ip_v) {
2148 sin = (struct sockaddr_in *)&local_store;
2149 sin->sin_family = AF_INET;
2150 sin->sin_len = sizeof(*sin);
2151 sin->sin_port = sh->dest_port;
2152 sin->sin_addr.s_addr = iph->ip_dst.s_addr;
2155 case IPV6_VERSION >> 4:
2157 ip6 = mtod(m, struct ip6_hdr *);
2158 sin6 = (struct sockaddr_in6 *)&local_store;
2159 sin6->sin6_family = AF_INET6;
2160 sin6->sin6_len = sizeof(*sin6);
2161 sin6->sin6_port = sh->dest_port;
2162 sin6->sin6_addr = ip6->ip6_dst;
2169 phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk),
2170 &parm_buf, sizeof(struct sctp_paramhdr));
2172 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n",
2176 ptype = (int)((uint32_t) ntohs(phdr->param_type));
2177 /* get the correlation address */
2180 case SCTP_IPV6_ADDRESS:
2182 /* ipv6 address param */
2183 struct sctp_ipv6addr_param *p6, p6_buf;
2185 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) {
2188 p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m,
2189 offset + sizeof(struct sctp_asconf_chunk),
2190 &p6_buf.ph, sizeof(*p6));
2192 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n",
2196 sin6 = (struct sockaddr_in6 *)&remote_store;
2197 sin6->sin6_family = AF_INET6;
2198 sin6->sin6_len = sizeof(*sin6);
2199 sin6->sin6_port = sh->src_port;
2200 memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr));
2201 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
2206 case SCTP_IPV4_ADDRESS:
2208 /* ipv4 address param */
2209 struct sctp_ipv4addr_param *p4, p4_buf;
2211 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) {
2214 p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m,
2215 offset + sizeof(struct sctp_asconf_chunk),
2216 &p4_buf.ph, sizeof(*p4));
2218 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n",
2222 sin = (struct sockaddr_in *)&remote_store;
2223 sin->sin_family = AF_INET;
2224 sin->sin_len = sizeof(*sin);
2225 sin->sin_port = sh->src_port;
2226 memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr));
2227 if (sin->sin_addr.s_addr == INADDR_ANY)
2232 /* invalid address param type */
2237 stcb = sctp_findassoc_by_vtag(NULL, to, ntohl(sh->v_tag), inp_p,
2238 netp, sh->src_port, sh->dest_port, 1, vrf_id, 0);
2240 * printf("findassociation_ep_asconf: zero lookup address
2241 * finds stcb 0x%x\n", (uint32_t)stcb);
2244 stcb = sctp_findassociation_ep_addr(inp_p,
2245 (struct sockaddr *)&remote_store, netp,
2253 * allocate a sctp_inpcb and setup a temporary binding to a port/all
2254 * addresses. This way if we don't get a bind we by default pick a ephemeral
2255 * port with all addresses bound.
2258 sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
2261 * we get called when a new endpoint starts up. We need to allocate
2262 * the sctp_inpcb structure from the zone and init it. Mark it as
2263 * unbound and find a port that we can use as an ephemeral with
2264 * INADDR_ANY. If the user binds later no problem we can then add in
2265 * the specific addresses. And setup the default parameters for the
2269 struct sctp_inpcb *inp;
2271 struct timeval time;
2272 sctp_sharedkey_t *null_key;
2276 SCTP_INP_INFO_WLOCK();
2277 inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb);
2279 SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n");
2280 SCTP_INP_INFO_WUNLOCK();
2281 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2285 bzero(inp, sizeof(*inp));
2287 /* bump generations */
2288 /* setup socket pointers */
2289 inp->sctp_socket = so;
2290 inp->ip_inp.inp.inp_socket = so;
2291 inp->sctp_associd_counter = 1;
2292 inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT;
2293 inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
2294 /* init the small hash table we use to track asocid <-> tcb */
2295 inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark);
2296 if (inp->sctp_asocidhash == NULL) {
2297 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2298 SCTP_INP_INFO_WUNLOCK();
2303 struct inpcbpolicy *pcb_sp = NULL;
2305 error = ipsec_init_policy(so, &pcb_sp);
2306 /* Arrange to share the policy */
2307 inp->ip_inp.inp.inp_sp = pcb_sp;
2308 ((struct in6pcb *)(&inp->ip_inp.inp))->in6p_sp = pcb_sp;
2311 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2312 SCTP_INP_INFO_WUNLOCK();
2316 SCTP_INCR_EP_COUNT();
2317 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
2318 SCTP_INP_INFO_WUNLOCK();
2320 so->so_pcb = (caddr_t)inp;
2322 if ((SCTP_SO_TYPE(so) == SOCK_DGRAM) ||
2323 (SCTP_SO_TYPE(so) == SOCK_SEQPACKET)) {
2324 /* UDP style socket */
2325 inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
2326 SCTP_PCB_FLAGS_UNBOUND);
2327 /* Be sure it is NON-BLOCKING IO for UDP */
2328 /* SCTP_SET_SO_NBIO(so); */
2329 } else if (SCTP_SO_TYPE(so) == SOCK_STREAM) {
2330 /* TCP style socket */
2331 inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
2332 SCTP_PCB_FLAGS_UNBOUND);
2333 /* Be sure we have blocking IO by default */
2334 SCTP_CLEAR_SO_NBIO(so);
2337 * unsupported socket type (RAW, etc)- in case we missed it
2340 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
2342 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2343 return (EOPNOTSUPP);
2345 if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) {
2346 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2347 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2348 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) {
2349 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2350 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2351 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) {
2352 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2353 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2355 inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize),
2356 &inp->sctp_hashmark);
2357 if (inp->sctp_tcbhash == NULL) {
2358 SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
2359 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2361 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2364 inp->def_vrf_id = vrf_id;
2366 SCTP_INP_INFO_WLOCK();
2367 SCTP_INP_LOCK_INIT(inp);
2368 INP_LOCK_INIT(&inp->ip_inp.inp, "inp", "sctpinp");
2369 SCTP_INP_READ_INIT(inp);
2370 SCTP_ASOC_CREATE_LOCK_INIT(inp);
2371 /* lock the new ep */
2372 SCTP_INP_WLOCK(inp);
2374 /* add it to the info area */
2375 LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list);
2376 SCTP_INP_INFO_WUNLOCK();
2378 TAILQ_INIT(&inp->read_queue);
2379 LIST_INIT(&inp->sctp_addr_list);
2381 LIST_INIT(&inp->sctp_asoc_list);
2383 #ifdef SCTP_TRACK_FREED_ASOCS
2385 LIST_INIT(&inp->sctp_asoc_free_list);
2387 /* Init the timer structure for signature change */
2388 SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer);
2389 inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE;
2391 /* now init the actual endpoint default data */
2394 /* setup the base timeout information */
2395 m->sctp_timeoutticks[SCTP_TIMER_SEND] = SEC_TO_TICKS(SCTP_SEND_SEC); /* needed ? */
2396 m->sctp_timeoutticks[SCTP_TIMER_INIT] = SEC_TO_TICKS(SCTP_INIT_SEC); /* needed ? */
2397 m->sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default));
2398 m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default));
2399 m->sctp_timeoutticks[SCTP_TIMER_PMTU] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default));
2400 m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default));
2401 m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default));
2402 /* all max/min max are in ms */
2403 m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default);
2404 m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default);
2405 m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default);
2406 m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default);
2407 m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default);
2409 m->max_open_streams_intome = MAX_SCTP_STREAMS;
2411 m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default);
2412 m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default);
2413 m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default);
2414 m->sctp_sws_sender = SCTP_SWS_SENDER_DEF;
2415 m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF;
2416 m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default);
2417 if ((SCTP_BASE_SYSCTL(sctp_default_cc_module) >= SCTP_CC_RFC2581) &&
2418 (SCTP_BASE_SYSCTL(sctp_default_cc_module) <= SCTP_CC_HTCP)) {
2419 m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module);
2421 /* sysctl done with invalid value, set to 2581 */
2422 m->sctp_default_cc_module = SCTP_CC_RFC2581;
2424 /* number of streams to pre-open on a association */
2425 m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default);
2427 /* Add adaptation cookie */
2428 m->adaptation_layer_indicator = 0x504C5253;
2430 /* seed random number generator */
2431 m->random_counter = 1;
2432 m->store_at = SCTP_SIGNATURE_SIZE;
2433 SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers));
2434 sctp_fill_random_store(m);
2436 /* Minimum cookie size */
2437 m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) +
2438 sizeof(struct sctp_state_cookie);
2439 m->size_of_a_cookie += SCTP_SIGNATURE_SIZE;
2441 /* Setup the initial secret */
2442 (void)SCTP_GETTIME_TIMEVAL(&time);
2443 m->time_of_secret_change = time.tv_sec;
2445 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
2446 m->secret_key[0][i] = sctp_select_initial_TSN(m);
2448 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
2450 /* How long is a cookie good for ? */
2451 m->def_cookie_life = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default));
2453 * Initialize authentication parameters
2455 m->local_hmacs = sctp_default_supported_hmaclist();
2456 m->local_auth_chunks = sctp_alloc_chunklist();
2457 sctp_auth_set_default_chunks(m->local_auth_chunks);
2458 LIST_INIT(&m->shared_keys);
2459 /* add default NULL key as key id 0 */
2460 null_key = sctp_alloc_sharedkey();
2461 sctp_insert_sharedkey(&m->shared_keys, null_key);
2462 SCTP_INP_WUNLOCK(inp);
2463 #ifdef SCTP_LOG_CLOSING
2464 sctp_log_closing(inp, NULL, 12);
2471 sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp,
2472 struct sctp_tcb *stcb)
2474 struct sctp_nets *net;
2475 uint16_t lport, rport;
2476 struct sctppcbhead *head;
2477 struct sctp_laddr *laddr, *oladdr;
2479 atomic_add_int(&stcb->asoc.refcnt, 1);
2480 SCTP_TCB_UNLOCK(stcb);
2481 SCTP_INP_INFO_WLOCK();
2482 SCTP_INP_WLOCK(old_inp);
2483 SCTP_INP_WLOCK(new_inp);
2484 SCTP_TCB_LOCK(stcb);
2485 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2487 new_inp->sctp_ep.time_of_secret_change =
2488 old_inp->sctp_ep.time_of_secret_change;
2489 memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key,
2490 sizeof(old_inp->sctp_ep.secret_key));
2491 new_inp->sctp_ep.current_secret_number =
2492 old_inp->sctp_ep.current_secret_number;
2493 new_inp->sctp_ep.last_secret_number =
2494 old_inp->sctp_ep.last_secret_number;
2495 new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie;
2497 /* make it so new data pours into the new socket */
2498 stcb->sctp_socket = new_inp->sctp_socket;
2499 stcb->sctp_ep = new_inp;
2501 /* Copy the port across */
2502 lport = new_inp->sctp_lport = old_inp->sctp_lport;
2503 rport = stcb->rport;
2504 /* Pull the tcb from the old association */
2505 LIST_REMOVE(stcb, sctp_tcbhash);
2506 LIST_REMOVE(stcb, sctp_tcblist);
2507 if (stcb->asoc.in_asocid_hash) {
2508 LIST_REMOVE(stcb, sctp_tcbasocidhash);
2510 /* Now insert the new_inp into the TCP connected hash */
2511 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport),
2512 SCTP_BASE_INFO(hashtcpmark))];
2514 LIST_INSERT_HEAD(head, new_inp, sctp_hash);
2515 /* Its safe to access */
2516 new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
2518 /* Now move the tcb into the endpoint list */
2519 LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist);
2521 * Question, do we even need to worry about the ep-hash since we
2522 * only have one connection? Probably not :> so lets get rid of it
2523 * and not suck up any kernel memory in that.
2525 if (stcb->asoc.in_asocid_hash) {
2526 struct sctpasochead *lhd;
2528 lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id,
2529 new_inp->hashasocidmark)];
2530 LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash);
2532 /* Ok. Let's restart timer. */
2533 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2534 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp,
2538 SCTP_INP_INFO_WUNLOCK();
2539 if (new_inp->sctp_tcbhash != NULL) {
2540 SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark);
2541 new_inp->sctp_tcbhash = NULL;
2543 if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2544 /* Subset bound, so copy in the laddr list from the old_inp */
2545 LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) {
2546 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2547 if (laddr == NULL) {
2549 * Gak, what can we do? This assoc is really
2550 * HOSED. We probably should send an abort
2553 SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n");
2556 SCTP_INCR_LADDR_COUNT();
2557 bzero(laddr, sizeof(*laddr));
2558 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2559 laddr->ifa = oladdr->ifa;
2560 atomic_add_int(&laddr->ifa->refcount, 1);
2561 LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr,
2563 new_inp->laddr_count++;
2567 * Now any running timers need to be adjusted since we really don't
2568 * care if they are running or not just blast in the new_inp into
2572 stcb->asoc.hb_timer.ep = (void *)new_inp;
2573 stcb->asoc.dack_timer.ep = (void *)new_inp;
2574 stcb->asoc.asconf_timer.ep = (void *)new_inp;
2575 stcb->asoc.strreset_timer.ep = (void *)new_inp;
2576 stcb->asoc.shut_guard_timer.ep = (void *)new_inp;
2577 stcb->asoc.autoclose_timer.ep = (void *)new_inp;
2578 stcb->asoc.delayed_event_timer.ep = (void *)new_inp;
2579 stcb->asoc.delete_prim_timer.ep = (void *)new_inp;
2580 /* now what about the nets? */
2581 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2582 net->pmtu_timer.ep = (void *)new_inp;
2583 net->rxt_timer.ep = (void *)new_inp;
2584 net->fr_timer.ep = (void *)new_inp;
2586 SCTP_INP_WUNLOCK(new_inp);
2587 SCTP_INP_WUNLOCK(old_inp);
2593 /* sctp_ifap is used to bypass normal local address validation checks */
2595 sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
2596 struct sctp_ifa *sctp_ifap, struct thread *p)
2598 /* bind a ep to a socket address */
2599 struct sctppcbhead *head;
2600 struct sctp_inpcb *inp, *inp_tmp;
2601 struct inpcb *ip_inp;
2602 int port_reuse_active = 0;
2611 inp = (struct sctp_inpcb *)so->so_pcb;
2612 ip_inp = (struct inpcb *)so->so_pcb;
2615 SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port:%d\n",
2616 ntohs(((struct sockaddr_in *)addr)->sin_port));
2617 SCTPDBG(SCTP_DEBUG_PCB1, "Addr :");
2618 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
2621 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2622 /* already did a bind, subsequent binds NOT allowed ! */
2623 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2628 panic("null proc/thread");
2631 switch (addr->sa_family) {
2634 struct sockaddr_in *sin;
2636 /* IPV6_V6ONLY socket? */
2637 if (SCTP_IPV6_V6ONLY(ip_inp)) {
2638 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2641 if (addr->sa_len != sizeof(*sin)) {
2642 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2645 sin = (struct sockaddr_in *)addr;
2646 lport = sin->sin_port;
2648 * For LOOPBACK the prison_local_ip4() call
2649 * will transmute the ip address to the
2652 if (p && (error = prison_local_ip4(p->td_ucred, &sin->sin_addr)) != 0) {
2653 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2656 if (sin->sin_addr.s_addr != INADDR_ANY) {
2665 * Only for pure IPv6 Address. (No IPv4
2668 struct sockaddr_in6 *sin6;
2670 sin6 = (struct sockaddr_in6 *)addr;
2672 if (addr->sa_len != sizeof(*sin6)) {
2673 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2676 lport = sin6->sin6_port;
2679 * For LOOPBACK the prison_local_ip6() call
2680 * will transmute the ipv6 address to the
2683 if (p && (error = prison_local_ip6(p->td_ucred, &sin6->sin6_addr,
2684 (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
2685 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2688 if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2690 /* KAME hack: embed scopeid */
2691 if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
2692 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2696 /* this must be cleared for ifa_ifwithaddr() */
2697 sin6->sin6_scope_id = 0;
2702 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EAFNOSUPPORT);
2703 return (EAFNOSUPPORT);
2706 SCTP_INP_INFO_WLOCK();
2707 SCTP_INP_WLOCK(inp);
2708 /* Setup a vrf_id to be the default for the non-bind-all case. */
2709 vrf_id = inp->def_vrf_id;
2711 /* increase our count due to the unlock we do */
2712 SCTP_INP_INCR_REF(inp);
2715 * Did the caller specify a port? if so we must see if a ep
2716 * already has this one bound.
2718 /* got to be root to get at low ports */
2719 if (ntohs(lport) < IPPORT_RESERVED) {
2721 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2723 SCTP_INP_DECR_REF(inp);
2724 SCTP_INP_WUNLOCK(inp);
2725 SCTP_INP_INFO_WUNLOCK();
2730 SCTP_INP_DECR_REF(inp);
2731 SCTP_INP_WUNLOCK(inp);
2732 SCTP_INP_INFO_WUNLOCK();
2733 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2736 SCTP_INP_WUNLOCK(inp);
2738 vrf_id = inp->def_vrf_id;
2739 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2740 if (inp_tmp != NULL) {
2742 * lock guy returned and lower count note
2743 * that we are not bound so inp_tmp should
2744 * NEVER be inp. And it is this inp
2745 * (inp_tmp) that gets the reference bump,
2746 * so we must lower it.
2748 SCTP_INP_DECR_REF(inp_tmp);
2750 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2751 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2753 * Ok, must be one-2-one and
2754 * allowing port re-use
2756 port_reuse_active = 1;
2757 goto continue_anyway;
2759 SCTP_INP_DECR_REF(inp);
2760 SCTP_INP_INFO_WUNLOCK();
2761 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2762 return (EADDRINUSE);
2765 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2766 if (inp_tmp != NULL) {
2768 * lock guy returned and lower count note
2769 * that we are not bound so inp_tmp should
2770 * NEVER be inp. And it is this inp
2771 * (inp_tmp) that gets the reference bump,
2772 * so we must lower it.
2774 SCTP_INP_DECR_REF(inp_tmp);
2776 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2777 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2779 * Ok, must be one-2-one and
2780 * allowing port re-use
2782 port_reuse_active = 1;
2783 goto continue_anyway;
2785 SCTP_INP_DECR_REF(inp);
2786 SCTP_INP_INFO_WUNLOCK();
2787 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2788 return (EADDRINUSE);
2792 SCTP_INP_WLOCK(inp);
2794 /* verify that no lport is not used by a singleton */
2795 if ((port_reuse_active == 0) &&
2796 (inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))
2798 /* Sorry someone already has this one bound */
2799 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2800 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2801 port_reuse_active = 1;
2803 SCTP_INP_DECR_REF(inp);
2804 SCTP_INP_WUNLOCK(inp);
2805 SCTP_INP_INFO_WUNLOCK();
2806 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2807 return (EADDRINUSE);
2812 uint16_t first, last, candidate;
2816 if (ip_inp->inp_flags & INP_HIGHPORT) {
2817 first = MODULE_GLOBAL(ipport_hifirstauto);
2818 last = MODULE_GLOBAL(ipport_hilastauto);
2819 } else if (ip_inp->inp_flags & INP_LOWPORT) {
2821 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2823 SCTP_INP_DECR_REF(inp);
2824 SCTP_INP_WUNLOCK(inp);
2825 SCTP_INP_INFO_WUNLOCK();
2826 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2829 first = MODULE_GLOBAL(ipport_lowfirstauto);
2830 last = MODULE_GLOBAL(ipport_lowlastauto);
2832 first = MODULE_GLOBAL(ipport_firstauto);
2833 last = MODULE_GLOBAL(ipport_lastauto);
2842 count = last - first + 1; /* number of candidates */
2843 candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count);
2847 if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) {
2852 SCTP_INP_DECR_REF(inp);
2853 SCTP_INP_WUNLOCK(inp);
2854 SCTP_INP_INFO_WUNLOCK();
2855 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2856 return (EADDRINUSE);
2858 if (candidate == last)
2861 candidate = candidate + 1;
2864 lport = htons(candidate);
2866 SCTP_INP_DECR_REF(inp);
2867 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE |
2868 SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
2870 * this really should not happen. The guy did a non-blocking
2871 * bind and then did a close at the same time.
2873 SCTP_INP_WUNLOCK(inp);
2874 SCTP_INP_INFO_WUNLOCK();
2875 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2878 /* ok we look clear to give out this port, so lets setup the binding */
2880 /* binding to all addresses, so just set in the proper flags */
2881 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL;
2882 /* set the automatic addr changes from kernel flag */
2883 if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) {
2884 sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
2885 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
2887 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
2888 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
2890 if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) {
2891 sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
2893 sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
2896 * set the automatic mobility_base from kernel flag (by
2899 if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) {
2900 sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE);
2901 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
2903 sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE);
2904 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
2907 * set the automatic mobility_fasthandoff from kernel flag
2910 if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) {
2911 sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF);
2912 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
2914 sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF);
2915 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
2919 * bind specific, make sure flags is off and add a new
2920 * address structure to the sctp_addr_list inside the ep
2923 * We will need to allocate one and insert it at the head. The
2924 * socketopt call can just insert new addresses in there as
2925 * well. It will also have to do the embed scope kame hack
2926 * too (before adding).
2928 struct sctp_ifa *ifa;
2929 struct sockaddr_storage store_sa;
2931 memset(&store_sa, 0, sizeof(store_sa));
2932 if (addr->sa_family == AF_INET) {
2933 struct sockaddr_in *sin;
2935 sin = (struct sockaddr_in *)&store_sa;
2936 memcpy(sin, addr, sizeof(struct sockaddr_in));
2938 } else if (addr->sa_family == AF_INET6) {
2939 struct sockaddr_in6 *sin6;
2941 sin6 = (struct sockaddr_in6 *)&store_sa;
2942 memcpy(sin6, addr, sizeof(struct sockaddr_in6));
2943 sin6->sin6_port = 0;
2946 * first find the interface with the bound address need to
2947 * zero out the port to find the address! yuck! can't do
2948 * this earlier since need port for sctp_pcb_findep()
2950 if (sctp_ifap != NULL)
2954 * Note for BSD we hit here always other O/S's will
2955 * pass things in via the sctp_ifap argument
2958 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&store_sa,
2959 vrf_id, SCTP_ADDR_NOT_LOCKED);
2962 /* Can't find an interface with that address */
2963 SCTP_INP_WUNLOCK(inp);
2964 SCTP_INP_INFO_WUNLOCK();
2965 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRNOTAVAIL);
2966 return (EADDRNOTAVAIL);
2968 if (addr->sa_family == AF_INET6) {
2969 /* GAK, more FIXME IFA lock? */
2970 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
2971 /* Can't bind a non-existent addr. */
2972 SCTP_INP_WUNLOCK(inp);
2973 SCTP_INP_INFO_WUNLOCK();
2974 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2978 /* we're not bound all */
2979 inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL;
2980 /* allow bindx() to send ASCONF's for binding changes */
2981 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
2982 /* clear automatic addr changes from kernel flag */
2983 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
2985 /* add this address to the endpoint list */
2986 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0);
2988 SCTP_INP_WUNLOCK(inp);
2989 SCTP_INP_INFO_WUNLOCK();
2994 /* find the bucket */
2995 if (port_reuse_active) {
2996 /* Put it into tcp 1-2-1 hash */
2997 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport),
2998 SCTP_BASE_INFO(hashtcpmark))];
2999 inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
3001 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
3002 SCTP_BASE_INFO(hashmark))];
3004 /* put it in the bucket */
3005 LIST_INSERT_HEAD(head, inp, sctp_hash);
3006 SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n",
3007 head, ntohs(lport), port_reuse_active);
3008 /* set in the port */
3009 inp->sctp_lport = lport;
3011 /* turn off just the unbound flag */
3012 inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
3013 SCTP_INP_WUNLOCK(inp);
3014 SCTP_INP_INFO_WUNLOCK();
3020 sctp_iterator_inp_being_freed(struct sctp_inpcb *inp)
3022 struct sctp_iterator *it, *nit;
3025 * We enter with the only the ITERATOR_LOCK in place and a write
3026 * lock on the inp_info stuff.
3028 it = sctp_it_ctl.cur_it;
3029 if (it && (it->vn != curvnet)) {
3030 /* Its not looking at our VNET */
3033 if (it && (it->inp == inp)) {
3035 * This is tricky and we hold the iterator lock, but when it
3036 * returns and gets the lock (when we release it) the
3037 * iterator will try to operate on inp. We need to stop that
3038 * from happening. But of course the iterator has a
3039 * reference on the stcb and inp. We can mark it and it will
3042 * If its a single iterator situation, we set the end iterator
3043 * flag. Otherwise we set the iterator to go to the next
3047 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3048 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
3050 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_INP;
3054 * Now go through and remove any single reference to our inp that
3055 * may be still pending on the list
3057 SCTP_IPI_ITERATOR_WQ_LOCK();
3058 it = TAILQ_FIRST(&sctp_it_ctl.iteratorhead);
3060 nit = TAILQ_NEXT(it, sctp_nxt_itr);
3061 if (it->vn != curvnet) {
3065 if (it->inp == inp) {
3066 /* This one points to me is it inp specific? */
3067 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3068 /* Remove and free this one */
3069 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
3071 if (it->function_atend != NULL) {
3072 (*it->function_atend) (it->pointer, it->val);
3074 SCTP_FREE(it, SCTP_M_ITER);
3076 it->inp = LIST_NEXT(it->inp, sctp_list);
3081 SCTP_IPI_ITERATOR_WQ_UNLOCK();
3084 /* release sctp_inpcb unbind the port */
3086 sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
3089 * Here we free a endpoint. We must find it (if it is in the Hash
3090 * table) and remove it from there. Then we must also find it in the
3091 * overall list and remove it from there. After all removals are
3092 * complete then any timer has to be stopped. Then start the actual
3093 * freeing. a) Any local lists. b) Any associations. c) The hash of
3094 * all associations. d) finally the ep itself.
3097 struct sctp_tcb *asoc, *nasoc;
3098 struct sctp_laddr *laddr, *nladdr;
3099 struct inpcb *ip_pcb;
3101 int being_refed = 0;
3102 struct sctp_queued_to_read *sq;
3106 sctp_sharedkey_t *shared_key;
3109 #ifdef SCTP_LOG_CLOSING
3110 sctp_log_closing(inp, NULL, 0);
3112 if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
3114 * Once we are in we can remove the flag from = 1 is only
3115 * passed from the actual closing routines that are called
3116 * via the sockets layer.
3118 SCTP_ITERATOR_LOCK();
3119 /* mark any iterators on the list or being processed */
3120 sctp_iterator_inp_being_freed(inp);
3121 SCTP_ITERATOR_UNLOCK();
3123 so = inp->sctp_socket;
3124 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
3125 /* been here before.. eeks.. get out of here */
3126 SCTP_PRINTF("This conflict in free SHOULD not be happening! from %d, imm %d\n", from, immediate);
3127 #ifdef SCTP_LOG_CLOSING
3128 sctp_log_closing(inp, NULL, 1);
3132 SCTP_ASOC_CREATE_LOCK(inp);
3133 SCTP_INP_INFO_WLOCK();
3135 SCTP_INP_WLOCK(inp);
3136 if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
3137 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP;
3138 /* socket is gone, so no more wakeups allowed */
3139 inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE;
3140 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
3141 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
3144 /* First time through we have the socket lock, after that no more. */
3145 sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL,
3146 SCTP_FROM_SCTP_PCB + SCTP_LOC_1);
3149 sctp_m_freem(inp->control);
3150 inp->control = NULL;
3153 sctp_m_freem(inp->pkt);
3157 ip_pcb = &inp->ip_inp.inp; /* we could just cast the main pointer
3158 * here but I will be nice :> (i.e.
3160 if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
3164 for ((asoc = LIST_FIRST(&inp->sctp_asoc_list)); asoc != NULL;
3166 SCTP_TCB_LOCK(asoc);
3167 nasoc = LIST_NEXT(asoc, sctp_tcblist);
3168 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3169 /* Skip guys being freed */
3171 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3173 * Special case - we did not start a
3174 * kill timer on the asoc due to it
3175 * was not closed. So go ahead and
3178 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3179 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3181 SCTP_TCB_UNLOCK(asoc);
3184 if (((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_WAIT) ||
3185 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_ECHOED)) &&
3186 (asoc->asoc.total_output_queue_size == 0)) {
3188 * If we have data in queue, we don't want
3189 * to just free since the app may have done,
3190 * send()/close or connect/send/close. And
3191 * it wants the data to get across first.
3193 /* Just abandon things in the front states */
3194 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE,
3195 SCTP_FROM_SCTP_PCB + SCTP_LOC_2) == 0) {
3200 /* Disconnect the socket please */
3201 asoc->sctp_socket = NULL;
3202 asoc->asoc.state |= SCTP_STATE_CLOSED_SOCKET;
3203 if ((asoc->asoc.size_on_reasm_queue > 0) ||
3204 (asoc->asoc.control_pdapi) ||
3205 (asoc->asoc.size_on_all_streams > 0) ||
3206 (so && (so->so_rcv.sb_cc > 0))
3208 /* Left with Data unread */
3209 struct mbuf *op_err;
3211 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3212 0, M_DONTWAIT, 1, MT_DATA);
3214 /* Fill in the user initiated abort */
3215 struct sctp_paramhdr *ph;
3218 SCTP_BUF_LEN(op_err) =
3219 sizeof(struct sctp_paramhdr) + sizeof(uint32_t);
3221 struct sctp_paramhdr *);
3222 ph->param_type = htons(
3223 SCTP_CAUSE_USER_INITIATED_ABT);
3224 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3225 ippp = (uint32_t *) (ph + 1);
3226 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_3);
3228 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_3;
3229 #if defined(SCTP_PANIC_ON_ABORT)
3230 panic("inpcb_free does an abort");
3232 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3233 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3234 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3235 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3236 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3238 if (sctp_free_assoc(inp, asoc,
3239 SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_4) == 0) {
3243 } else if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3244 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3245 (asoc->asoc.stream_queue_cnt == 0)
3247 if (asoc->asoc.locked_on_sending) {
3250 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
3251 (SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
3253 * there is nothing queued to send,
3254 * so I send shutdown
3256 sctp_send_shutdown(asoc, asoc->asoc.primary_destination);
3257 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3258 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3259 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3261 SCTP_SET_STATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_SENT);
3262 SCTP_CLEAR_SUBSTATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_PENDING);
3263 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, asoc->sctp_ep, asoc,
3264 asoc->asoc.primary_destination);
3265 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3266 asoc->asoc.primary_destination);
3267 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED);
3270 /* mark into shutdown pending */
3271 struct sctp_stream_queue_pending *sp;
3273 asoc->asoc.state |= SCTP_STATE_SHUTDOWN_PENDING;
3274 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3275 asoc->asoc.primary_destination);
3276 if (asoc->asoc.locked_on_sending) {
3277 sp = TAILQ_LAST(&((asoc->asoc.locked_on_sending)->outqueue),
3280 SCTP_PRINTF("Error, sp is NULL, locked on sending is %p strm:%d\n",
3281 asoc->asoc.locked_on_sending,
3282 asoc->asoc.locked_on_sending->stream_no);
3284 if ((sp->length == 0) && (sp->msg_is_complete == 0))
3285 asoc->asoc.state |= SCTP_STATE_PARTIAL_MSG_LEFT;
3288 if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3289 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3290 (asoc->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
3291 struct mbuf *op_err;
3294 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3295 0, M_DONTWAIT, 1, MT_DATA);
3301 struct sctp_paramhdr *ph;
3304 SCTP_BUF_LEN(op_err) =
3305 (sizeof(struct sctp_paramhdr) +
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_5);
3315 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_5;
3316 #if defined(SCTP_PANIC_ON_ABORT)
3317 panic("inpcb_free does an abort");
3320 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3321 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3322 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3323 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3324 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3326 if (sctp_free_assoc(inp, asoc,
3327 SCTP_PCBFREE_NOFORCE,
3328 SCTP_FROM_SCTP_PCB + SCTP_LOC_6) == 0) {
3333 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
3337 SCTP_TCB_UNLOCK(asoc);
3339 /* now is there some left in our SHUTDOWN state? */
3341 #ifdef SCTP_LOG_CLOSING
3342 sctp_log_closing(inp, NULL, 2);
3344 inp->sctp_socket = NULL;
3345 SCTP_INP_WUNLOCK(inp);
3346 SCTP_ASOC_CREATE_UNLOCK(inp);
3347 SCTP_INP_INFO_WUNLOCK();
3351 inp->sctp_socket = NULL;
3352 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) !=
3353 SCTP_PCB_FLAGS_UNBOUND) {
3355 * ok, this guy has been bound. It's port is somewhere in
3356 * the SCTP_BASE_INFO(hash table). Remove it!
3358 LIST_REMOVE(inp, sctp_hash);
3359 inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND;
3362 * If there is a timer running to kill us, forget it, since it may
3363 * have a contest on the INP lock.. which would cause us to die ...
3366 for ((asoc = LIST_FIRST(&inp->sctp_asoc_list)); asoc != NULL;
3368 nasoc = LIST_NEXT(asoc, sctp_tcblist);
3369 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3370 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3371 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3372 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3377 /* Free associations that are NOT killing us */
3378 SCTP_TCB_LOCK(asoc);
3379 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_COOKIE_WAIT) &&
3380 ((asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) {
3381 struct mbuf *op_err;
3384 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3385 0, M_DONTWAIT, 1, MT_DATA);
3387 /* Fill in the user initiated abort */
3388 struct sctp_paramhdr *ph;
3390 SCTP_BUF_LEN(op_err) = (sizeof(struct sctp_paramhdr) +
3392 ph = mtod(op_err, struct sctp_paramhdr *);
3393 ph->param_type = htons(
3394 SCTP_CAUSE_USER_INITIATED_ABT);
3395 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3396 ippp = (uint32_t *) (ph + 1);
3397 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_7);
3400 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_7;
3401 #if defined(SCTP_PANIC_ON_ABORT)
3402 panic("inpcb_free does an abort");
3404 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3405 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3406 } else if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3408 SCTP_TCB_UNLOCK(asoc);
3411 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3412 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3413 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3415 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_8) == 0) {
3420 /* Ok we have someone out there that will kill us */
3421 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3422 #ifdef SCTP_LOG_CLOSING
3423 sctp_log_closing(inp, NULL, 3);
3425 SCTP_INP_WUNLOCK(inp);
3426 SCTP_ASOC_CREATE_UNLOCK(inp);
3427 SCTP_INP_INFO_WUNLOCK();
3430 if (SCTP_INP_LOCK_CONTENDED(inp))
3432 if (SCTP_INP_READ_CONTENDED(inp))
3434 if (SCTP_ASOC_CREATE_LOCK_CONTENDED(inp))
3437 if ((inp->refcount) ||
3439 (inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) {
3440 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3441 #ifdef SCTP_LOG_CLOSING
3442 sctp_log_closing(inp, NULL, 4);
3444 sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
3445 SCTP_INP_WUNLOCK(inp);
3446 SCTP_ASOC_CREATE_UNLOCK(inp);
3447 SCTP_INP_INFO_WUNLOCK();
3450 inp->sctp_ep.signature_change.type = 0;
3451 inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE;
3453 * Remove it from the list .. last thing we need a lock for.
3455 LIST_REMOVE(inp, sctp_list);
3456 SCTP_INP_WUNLOCK(inp);
3457 SCTP_ASOC_CREATE_UNLOCK(inp);
3458 SCTP_INP_INFO_WUNLOCK();
3460 * Now we release all locks. Since this INP cannot be found anymore
3461 * except possbily by the kill timer that might be running. We call
3462 * the drain function here. It should hit the case were it sees the
3463 * ACTIVE flag cleared and exit out freeing us to proceed and
3464 * destroy everything.
3466 if (from != SCTP_CALLED_FROM_INPKILL_TIMER) {
3467 (void)SCTP_OS_TIMER_STOP_DRAIN(&inp->sctp_ep.signature_change.timer);
3469 /* Probably un-needed */
3470 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3473 #ifdef SCTP_LOG_CLOSING
3474 sctp_log_closing(inp, NULL, 5);
3478 if ((inp->sctp_asocidhash) != NULL) {
3479 SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark);
3480 inp->sctp_asocidhash = NULL;
3482 /* sa_ignore FREED_MEMORY */
3483 while ((sq = TAILQ_FIRST(&inp->read_queue)) != NULL) {
3484 /* Its only abandoned if it had data left */
3486 SCTP_STAT_INCR(sctps_left_abandon);
3488 TAILQ_REMOVE(&inp->read_queue, sq, next);
3489 sctp_free_remote_addr(sq->whoFrom);
3491 so->so_rcv.sb_cc -= sq->length;
3493 sctp_m_freem(sq->data);
3497 * no need to free the net count, since at this point all
3500 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
3501 SCTP_DECR_READQ_COUNT();
3503 /* Now the sctp_pcb things */
3505 * free each asoc if it is not already closed/free. we can't use the
3506 * macro here since le_next will get freed as part of the
3507 * sctp_free_assoc() call.
3512 ipsec_delete_pcbpolicy(ip_pcb);
3515 /* Unlocks not needed since the socket is gone now */
3517 if (ip_pcb->inp_options) {
3518 (void)sctp_m_free(ip_pcb->inp_options);
3519 ip_pcb->inp_options = 0;
3521 if (ip_pcb->inp_moptions) {
3522 inp_freemoptions(ip_pcb->inp_moptions);
3523 ip_pcb->inp_moptions = 0;
3526 if (ip_pcb->inp_vflag & INP_IPV6) {
3527 struct in6pcb *in6p;
3529 in6p = (struct in6pcb *)inp;
3530 ip6_freepcbopts(in6p->in6p_outputopts);
3533 ip_pcb->inp_vflag = 0;
3534 /* free up authentication fields */
3535 if (inp->sctp_ep.local_auth_chunks != NULL)
3536 sctp_free_chunklist(inp->sctp_ep.local_auth_chunks);
3537 if (inp->sctp_ep.local_hmacs != NULL)
3538 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3540 shared_key = LIST_FIRST(&inp->sctp_ep.shared_keys);
3541 while (shared_key) {
3542 LIST_REMOVE(shared_key, next);
3543 sctp_free_sharedkey(shared_key);
3544 /* sa_ignore FREED_MEMORY */
3545 shared_key = LIST_FIRST(&inp->sctp_ep.shared_keys);
3549 * if we have an address list the following will free the list of
3550 * ifaddr's that are set into this ep. Again macro limitations here,
3551 * since the LIST_FOREACH could be a bad idea.
3553 for ((laddr = LIST_FIRST(&inp->sctp_addr_list)); laddr != NULL;
3555 nladdr = LIST_NEXT(laddr, sctp_nxt_addr);
3556 sctp_remove_laddr(laddr);
3559 #ifdef SCTP_TRACK_FREED_ASOCS
3561 for ((asoc = LIST_FIRST(&inp->sctp_asoc_free_list)); asoc != NULL;
3563 nasoc = LIST_NEXT(asoc, sctp_tcblist);
3564 LIST_REMOVE(asoc, sctp_tcblist);
3565 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), asoc);
3566 SCTP_DECR_ASOC_COUNT();
3568 /* *** END TEMP CODE *** */
3570 /* Now lets see about freeing the EP hash table. */
3571 if (inp->sctp_tcbhash != NULL) {
3572 SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
3573 inp->sctp_tcbhash = NULL;
3575 /* Now we must put the ep memory back into the zone pool */
3576 INP_LOCK_DESTROY(&inp->ip_inp.inp);
3577 SCTP_INP_LOCK_DESTROY(inp);
3578 SCTP_INP_READ_DESTROY(inp);
3579 SCTP_ASOC_CREATE_LOCK_DESTROY(inp);
3580 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
3581 SCTP_DECR_EP_COUNT();
3586 sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
3588 struct sctp_nets *net;
3590 /* locate the address */
3591 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3592 if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr))
3600 sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
3602 struct sctp_ifa *sctp_ifa;
3604 sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED);
3613 * add's a remote endpoint address, done with the INIT/INIT-ACK as well as
3614 * when a ASCONF arrives that adds it. It will also initialize all the cwnd
3618 sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
3619 int set_scope, int from)
3622 * The following is redundant to the same lines in the
3623 * sctp_aloc_assoc() but is needed since other's call the add
3626 struct sctp_nets *net, *netfirst;
3629 SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ",
3631 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr);
3633 netfirst = sctp_findnet(stcb, newaddr);
3636 * Lie and return ok, we don't want to make the association
3637 * go away for this behavior. It will happen in the TCP
3638 * model in a connected socket. It does not reach the hash
3639 * table until after the association is built so it can't be
3640 * found. Mark as reachable, since the initial creation will
3641 * have been cleared and the NOT_IN_ASSOC flag will have
3642 * been added... and we don't want to end up removing it
3645 if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) {
3646 netfirst->dest_state = (SCTP_ADDR_REACHABLE |
3647 SCTP_ADDR_UNCONFIRMED);
3649 netfirst->dest_state = SCTP_ADDR_REACHABLE;
3655 if (newaddr->sa_family == AF_INET) {
3656 struct sockaddr_in *sin;
3658 sin = (struct sockaddr_in *)newaddr;
3659 if (sin->sin_addr.s_addr == 0) {
3660 /* Invalid address */
3663 /* zero out the bzero area */
3664 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
3666 /* assure len is set */
3667 sin->sin_len = sizeof(struct sockaddr_in);
3669 #ifdef SCTP_DONT_DO_PRIVADDR_SCOPE
3670 stcb->ipv4_local_scope = 1;
3672 if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
3673 stcb->asoc.ipv4_local_scope = 1;
3675 #endif /* SCTP_DONT_DO_PRIVADDR_SCOPE */
3677 /* Validate the address is in scope */
3678 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) &&
3679 (stcb->asoc.ipv4_local_scope == 0)) {
3684 } else if (newaddr->sa_family == AF_INET6) {
3685 struct sockaddr_in6 *sin6;
3687 sin6 = (struct sockaddr_in6 *)newaddr;
3688 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3689 /* Invalid address */
3692 /* assure len is set */
3693 sin6->sin6_len = sizeof(struct sockaddr_in6);
3695 if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) {
3696 stcb->asoc.loopback_scope = 1;
3697 stcb->asoc.local_scope = 0;
3698 stcb->asoc.ipv4_local_scope = 1;
3699 stcb->asoc.site_scope = 1;
3700 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
3702 * If the new destination is a LINK_LOCAL we
3703 * must have common site scope. Don't set
3704 * the local scope since we may not share
3705 * all links, only loopback can do this.
3706 * Links on the local network would also be
3707 * on our private network for v4 too.
3709 stcb->asoc.ipv4_local_scope = 1;
3710 stcb->asoc.site_scope = 1;
3711 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
3713 * If the new destination is SITE_LOCAL then
3714 * we must have site scope in common.
3716 stcb->asoc.site_scope = 1;
3719 /* Validate the address is in scope */
3720 if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) &&
3721 (stcb->asoc.loopback_scope == 0)) {
3723 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
3724 (stcb->asoc.local_scope == 0)) {
3726 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
3727 (stcb->asoc.site_scope == 0)) {
3733 /* not supported family type */
3736 net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets);
3740 SCTP_INCR_RADDR_COUNT();
3741 bzero(net, sizeof(*net));
3742 (void)SCTP_GETTIME_TIMEVAL(&net->start_time);
3743 memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len);
3744 if (newaddr->sa_family == AF_INET) {
3745 ((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport;
3746 } else if (newaddr->sa_family == AF_INET6) {
3747 ((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport;
3749 net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id);
3750 if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) {
3751 stcb->asoc.loopback_scope = 1;
3752 stcb->asoc.ipv4_local_scope = 1;
3753 stcb->asoc.local_scope = 0;
3754 stcb->asoc.site_scope = 1;
3757 net->failure_threshold = stcb->asoc.def_net_failure;
3758 if (addr_inscope == 0) {
3759 net->dest_state = (SCTP_ADDR_REACHABLE |
3760 SCTP_ADDR_OUT_OF_SCOPE);
3762 if (from == SCTP_ADDR_IS_CONFIRMED)
3763 /* SCTP_ADDR_IS_CONFIRMED is passed by connect_x */
3764 net->dest_state = SCTP_ADDR_REACHABLE;
3766 net->dest_state = SCTP_ADDR_REACHABLE |
3767 SCTP_ADDR_UNCONFIRMED;
3770 * We set this to 0, the timer code knows that this means its an
3774 net->RTO_measured = 0;
3775 stcb->asoc.numnets++;
3776 *(&net->ref_count) = 1;
3777 net->tos_flowlabel = 0;
3778 if (SCTP_BASE_SYSCTL(sctp_udp_tunneling_for_client_enable)) {
3779 net->port = htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port));
3784 if (newaddr->sa_family == AF_INET)
3785 net->tos_flowlabel = stcb->asoc.default_tos;
3788 if (newaddr->sa_family == AF_INET6)
3789 net->tos_flowlabel = stcb->asoc.default_flowlabel;
3791 /* Init the timer structure */
3792 SCTP_OS_TIMER_INIT(&net->rxt_timer.timer);
3793 SCTP_OS_TIMER_INIT(&net->fr_timer.timer);
3794 SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer);
3796 /* Now generate a route for this guy */
3798 /* KAME hack: embed scopeid */
3799 if (newaddr->sa_family == AF_INET6) {
3800 struct sockaddr_in6 *sin6;
3802 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3803 (void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone));
3804 sin6->sin6_scope_id = 0;
3807 SCTP_RTALLOC((sctp_route_t *) & net->ro, stcb->asoc.vrf_id);
3809 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) {
3810 /* Get source address */
3811 net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep,
3813 (sctp_route_t *) & net->ro,
3817 /* Now get the interface MTU */
3818 if (net->ro._s_addr && net->ro._s_addr->ifn_p) {
3819 net->mtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p);
3823 #ifdef SCTP_PRINT_FOR_B_AND_M
3824 SCTP_PRINTF("We have found an interface mtu of %d\n", net->mtu);
3826 if (net->mtu == 0) {
3828 net->mtu = SCTP_DEFAULT_MTU;
3832 rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_rt);
3833 #ifdef SCTP_PRINT_FOR_B_AND_M
3834 SCTP_PRINTF("The route mtu is %d\n", rmtu);
3838 * Start things off to match mtu of
3841 SCTP_SET_MTU_OF_ROUTE(&net->ro._l_addr.sa,
3842 net->ro.ro_rt, net->mtu);
3845 * we take the route mtu over the interface,
3846 * since the route may be leading out the
3847 * loopback, or a different interface.
3852 if (from == SCTP_ALLOC_ASOC) {
3853 #ifdef SCTP_PRINT_FOR_B_AND_M
3854 SCTP_PRINTF("New assoc sets mtu to :%d\n", net->mtu);
3856 stcb->asoc.smallest_mtu = net->mtu;
3859 net->mtu = stcb->asoc.smallest_mtu;
3862 if (newaddr->sa_family == AF_INET6) {
3863 struct sockaddr_in6 *sin6;
3865 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3866 (void)sa6_recoverscope(sin6);
3870 net->mtu -= sizeof(struct udphdr);
3872 if (stcb->asoc.smallest_mtu > net->mtu) {
3873 #ifdef SCTP_PRINT_FOR_B_AND_M
3874 SCTP_PRINTF("new address mtu:%d smaller than smallest:%d\n",
3875 net->mtu, stcb->asoc.smallest_mtu);
3877 stcb->asoc.smallest_mtu = net->mtu;
3879 /* JRS - Use the congestion control given in the CC module */
3880 stcb->asoc.cc_functions.sctp_set_initial_cc_param(stcb, net);
3883 * CMT: CUC algo - set find_pseudo_cumack to TRUE (1) at beginning
3884 * of assoc (2005/06/27, iyengar@cis.udel.edu)
3886 net->find_pseudo_cumack = 1;
3887 net->find_rtx_pseudo_cumack = 1;
3888 net->src_addr_selected = 0;
3889 netfirst = TAILQ_FIRST(&stcb->asoc.nets);
3890 if (net->ro.ro_rt == NULL) {
3891 /* Since we have no route put it at the back */
3892 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
3893 } else if (netfirst == NULL) {
3894 /* We are the first one in the pool. */
3895 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
3896 } else if (netfirst->ro.ro_rt == NULL) {
3898 * First one has NO route. Place this one ahead of the first
3901 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
3902 } else if (net->ro.ro_rt->rt_ifp != netfirst->ro.ro_rt->rt_ifp) {
3904 * This one has a different interface than the one at the
3905 * top of the list. Place it ahead.
3907 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
3910 * Ok we have the same interface as the first one. Move
3911 * forward until we find either a) one with a NULL route...
3912 * insert ahead of that b) one with a different ifp.. insert
3913 * after that. c) end of the list.. insert at the tail.
3915 struct sctp_nets *netlook;
3918 netlook = TAILQ_NEXT(netfirst, sctp_next);
3919 if (netlook == NULL) {
3920 /* End of the list */
3921 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
3923 } else if (netlook->ro.ro_rt == NULL) {
3924 /* next one has NO route */
3925 TAILQ_INSERT_BEFORE(netfirst, net, sctp_next);
3927 } else if (netlook->ro.ro_rt->rt_ifp != net->ro.ro_rt->rt_ifp) {
3928 TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook,
3934 } while (netlook != NULL);
3937 /* got to have a primary set */
3938 if (stcb->asoc.primary_destination == 0) {
3939 stcb->asoc.primary_destination = net;
3940 } else if ((stcb->asoc.primary_destination->ro.ro_rt == NULL) &&
3942 ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
3943 /* No route to current primary adopt new primary */
3944 stcb->asoc.primary_destination = net;
3946 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, stcb->sctp_ep, stcb,
3948 /* Validate primary is first */
3949 net = TAILQ_FIRST(&stcb->asoc.nets);
3950 if ((net != stcb->asoc.primary_destination) &&
3951 (stcb->asoc.primary_destination)) {
3953 * first one on the list is NOT the primary sctp_cmpaddr()
3954 * is much more efficent if the primary is the first on the
3957 TAILQ_REMOVE(&stcb->asoc.nets,
3958 stcb->asoc.primary_destination, sctp_next);
3959 TAILQ_INSERT_HEAD(&stcb->asoc.nets,
3960 stcb->asoc.primary_destination, sctp_next);
3967 sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
3970 struct sctpasochead *head;
3971 struct sctp_tcb *lstcb;
3973 SCTP_INP_WLOCK(inp);
3975 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
3977 SCTP_INP_WUNLOCK(inp);
3981 * We don't allow assoc id to be 0, this is needed otherwise if the
3982 * id were to wrap we would have issues with some socket options.
3984 if (inp->sctp_associd_counter == 0) {
3985 inp->sctp_associd_counter++;
3987 id = inp->sctp_associd_counter;
3988 inp->sctp_associd_counter++;
3989 lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t) id, 0);
3993 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
3994 LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash);
3995 stcb->asoc.in_asocid_hash = 1;
3996 SCTP_INP_WUNLOCK(inp);
4001 * allocate an association and add it to the endpoint. The caller must be
4002 * careful to add all additional addresses once they are know right away or
4003 * else the assoc will be may experience a blackout scenario.
4006 sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
4007 int *error, uint32_t override_tag, uint32_t vrf_id,
4011 /* note the p argument is only valid in unbound sockets */
4013 struct sctp_tcb *stcb;
4014 struct sctp_association *asoc;
4015 struct sctpasochead *head;
4020 * Assumption made here: Caller has done a
4021 * sctp_findassociation_ep_addr(ep, addr's); to make sure the
4022 * address does not exist already.
4024 if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) {
4025 /* Hit max assoc, sorry no more */
4026 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4030 if (firstaddr == NULL) {
4031 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4035 SCTP_INP_RLOCK(inp);
4036 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
4037 ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) ||
4038 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4040 * If its in the TCP pool, its NOT allowed to create an
4041 * association. The parent listener needs to call
4042 * sctp_aloc_assoc.. or the one-2-many socket. If a peeled
4043 * off, or connected one does this.. its an error.
4045 SCTP_INP_RUNLOCK(inp);
4046 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4050 SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:");
4053 SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr);
4054 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4055 ntohs(((struct sockaddr_in *)firstaddr)->sin_port));
4057 SCTPDBG(SCTP_DEBUG_PCB3, "None\n");
4059 #endif /* SCTP_DEBUG */
4060 if (firstaddr->sa_family == AF_INET) {
4061 struct sockaddr_in *sin;
4063 sin = (struct sockaddr_in *)firstaddr;
4064 if ((sin->sin_port == 0) || (sin->sin_addr.s_addr == 0)) {
4065 /* Invalid address */
4066 SCTP_INP_RUNLOCK(inp);
4067 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4071 rport = sin->sin_port;
4072 } else if (firstaddr->sa_family == AF_INET6) {
4073 struct sockaddr_in6 *sin6;
4075 sin6 = (struct sockaddr_in6 *)firstaddr;
4076 if ((sin6->sin6_port == 0) ||
4077 (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))) {
4078 /* Invalid address */
4079 SCTP_INP_RUNLOCK(inp);
4080 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4084 rport = sin6->sin6_port;
4086 /* not supported family type */
4087 SCTP_INP_RUNLOCK(inp);
4088 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4092 SCTP_INP_RUNLOCK(inp);
4093 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4095 * If you have not performed a bind, then we need to do the
4096 * ephemerial bind for you.
4098 if ((err = sctp_inpcb_bind(inp->sctp_socket,
4099 (struct sockaddr *)NULL,
4100 (struct sctp_ifa *)NULL,
4103 /* bind error, probably perm */
4108 stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb);
4110 /* out of memory? */
4111 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
4115 SCTP_INCR_ASOC_COUNT();
4117 bzero(stcb, sizeof(*stcb));
4120 asoc->assoc_id = sctp_aloc_a_assoc_id(inp, stcb);
4121 SCTP_TCB_LOCK_INIT(stcb);
4122 SCTP_TCB_SEND_LOCK_INIT(stcb);
4123 stcb->rport = rport;
4124 /* setup back pointer's */
4125 stcb->sctp_ep = inp;
4126 stcb->sctp_socket = inp->sctp_socket;
4127 if ((err = sctp_init_asoc(inp, stcb, override_tag, vrf_id))) {
4129 SCTP_TCB_LOCK_DESTROY(stcb);
4130 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4131 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4132 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4133 SCTP_DECR_ASOC_COUNT();
4138 SCTP_INP_INFO_WLOCK();
4139 SCTP_INP_WLOCK(inp);
4140 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
4141 /* inpcb freed while alloc going on */
4142 SCTP_TCB_LOCK_DESTROY(stcb);
4143 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4144 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4145 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4146 SCTP_INP_WUNLOCK(inp);
4147 SCTP_INP_INFO_WUNLOCK();
4148 SCTP_DECR_ASOC_COUNT();
4149 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4153 SCTP_TCB_LOCK(stcb);
4155 /* now that my_vtag is set, add it to the hash */
4156 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))];
4157 /* put it in the bucket in the vtag hash of assoc's for the system */
4158 LIST_INSERT_HEAD(head, stcb, sctp_asocs);
4159 SCTP_INP_INFO_WUNLOCK();
4161 if ((err = sctp_add_remote_addr(stcb, firstaddr, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC))) {
4162 /* failure.. memory error? */
4163 if (asoc->strmout) {
4164 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4165 asoc->strmout = NULL;
4167 if (asoc->mapping_array) {
4168 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4169 asoc->mapping_array = NULL;
4171 if (asoc->nr_mapping_array) {
4172 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4173 asoc->nr_mapping_array = NULL;
4175 SCTP_DECR_ASOC_COUNT();
4176 SCTP_TCB_LOCK_DESTROY(stcb);
4177 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4178 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4179 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4180 SCTP_INP_WUNLOCK(inp);
4181 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4185 /* Init all the timers */
4186 SCTP_OS_TIMER_INIT(&asoc->hb_timer.timer);
4187 SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer);
4188 SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer);
4189 SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer);
4190 SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer);
4191 SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer);
4192 SCTP_OS_TIMER_INIT(&asoc->delayed_event_timer.timer);
4193 SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer);
4195 LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist);
4196 /* now file the port under the hash as well */
4197 if (inp->sctp_tcbhash != NULL) {
4198 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport,
4199 inp->sctp_hashmark)];
4200 LIST_INSERT_HEAD(head, stcb, sctp_tcbhash);
4202 SCTP_INP_WUNLOCK(inp);
4203 SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", stcb);
4209 sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
4211 struct sctp_association *asoc;
4215 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4216 if (net == asoc->primary_destination) {
4218 struct sctp_nets *lnet;
4220 lnet = TAILQ_FIRST(&asoc->nets);
4222 * Mobility adaptation Ideally, if deleted destination is
4223 * the primary, it becomes a fast retransmission trigger by
4224 * the subsequent SET PRIMARY. (by micchie)
4226 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
4227 SCTP_MOBILITY_BASE) ||
4228 sctp_is_mobility_feature_on(stcb->sctp_ep,
4229 SCTP_MOBILITY_FASTHANDOFF)) {
4230 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n");
4231 if (asoc->deleted_primary != NULL) {
4232 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n");
4235 asoc->deleted_primary = net;
4236 atomic_add_int(&net->ref_count, 1);
4237 memset(&net->lastsa, 0, sizeof(net->lastsa));
4238 memset(&net->lastsv, 0, sizeof(net->lastsv));
4239 sctp_mobility_feature_on(stcb->sctp_ep,
4240 SCTP_MOBILITY_PRIM_DELETED);
4241 sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED,
4242 stcb->sctp_ep, stcb, NULL);
4245 /* Try to find a confirmed primary */
4246 asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0);
4248 if (net == asoc->last_data_chunk_from) {
4250 asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets);
4252 if (net == asoc->last_control_chunk_from) {
4254 asoc->last_control_chunk_from = NULL;
4256 sctp_free_remote_addr(net);
4260 * remove a remote endpoint address from an association, it will fail if the
4261 * address does not exist.
4264 sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
4267 * Here we need to remove a remote address. This is quite simple, we
4268 * first find it in the list of address for the association
4269 * (tasoc->asoc.nets) and then if it is there, we do a LIST_REMOVE
4270 * on that item. Note we do not allow it to be removed if there are
4271 * no other addresses.
4273 struct sctp_association *asoc;
4274 struct sctp_nets *net, *net_tmp;
4278 /* locate the address */
4279 for (net = TAILQ_FIRST(&asoc->nets); net != NULL; net = net_tmp) {
4280 net_tmp = TAILQ_NEXT(net, sctp_next);
4281 if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) {
4284 if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr,
4286 /* we found the guy */
4287 if (asoc->numnets < 2) {
4288 /* Must have at LEAST two remote addresses */
4291 sctp_remove_net(stcb, net);
4301 sctp_delete_from_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4303 struct sctpvtaghead *chain;
4304 struct sctp_tagblock *twait_block;
4308 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4309 if (!LIST_EMPTY(chain)) {
4310 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4311 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4312 if ((twait_block->vtag_block[i].v_tag == tag) &&
4313 (twait_block->vtag_block[i].lport == lport) &&
4314 (twait_block->vtag_block[i].rport == rport)) {
4315 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4316 twait_block->vtag_block[i].v_tag = 0;
4317 twait_block->vtag_block[i].lport = 0;
4318 twait_block->vtag_block[i].rport = 0;
4330 sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4332 struct sctpvtaghead *chain;
4333 struct sctp_tagblock *twait_block;
4337 SCTP_INP_INFO_WLOCK();
4338 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4339 if (!LIST_EMPTY(chain)) {
4340 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4341 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4342 if ((twait_block->vtag_block[i].v_tag == tag) &&
4343 (twait_block->vtag_block[i].lport == lport) &&
4344 (twait_block->vtag_block[i].rport == rport)) {
4353 SCTP_INP_INFO_WUNLOCK();
4359 sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport)
4361 struct sctpvtaghead *chain;
4362 struct sctp_tagblock *twait_block;
4370 (void)SCTP_GETTIME_TIMEVAL(&now);
4371 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4373 if (!LIST_EMPTY(chain)) {
4374 /* Block(s) present, lets find space, and expire on the fly */
4375 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4376 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4377 if ((twait_block->vtag_block[i].v_tag == 0) &&
4379 twait_block->vtag_block[i].tv_sec_at_expire =
4381 twait_block->vtag_block[i].v_tag = tag;
4382 twait_block->vtag_block[i].lport = lport;
4383 twait_block->vtag_block[i].rport = rport;
4385 } else if ((twait_block->vtag_block[i].v_tag) &&
4386 ((long)twait_block->vtag_block[i].tv_sec_at_expire < now.tv_sec)) {
4387 /* Audit expires this guy */
4388 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4389 twait_block->vtag_block[i].v_tag = 0;
4390 twait_block->vtag_block[i].lport = 0;
4391 twait_block->vtag_block[i].rport = 0;
4393 /* Reuse it for my new tag */
4394 twait_block->vtag_block[i].tv_sec_at_expire = now.tv_sec + time;
4395 twait_block->vtag_block[i].v_tag = tag;
4396 twait_block->vtag_block[i].lport = lport;
4397 twait_block->vtag_block[i].rport = rport;
4404 * We only do up to the block where we can
4405 * place our tag for audits
4411 /* Need to add a new block to chain */
4413 SCTP_MALLOC(twait_block, struct sctp_tagblock *,
4414 sizeof(struct sctp_tagblock), SCTP_M_TIMW);
4415 if (twait_block == NULL) {
4417 panic("Can not alloc tagblock");
4421 memset(twait_block, 0, sizeof(struct sctp_tagblock));
4422 LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock);
4423 twait_block->vtag_block[0].tv_sec_at_expire = now.tv_sec + time;
4424 twait_block->vtag_block[0].v_tag = tag;
4425 twait_block->vtag_block[0].lport = lport;
4426 twait_block->vtag_block[0].rport = rport;
4432 sctp_iterator_asoc_being_freed(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
4434 struct sctp_iterator *it;
4437 * Unlock the tcb lock we do this so we avoid a dead lock scenario
4438 * where the iterator is waiting on the TCB lock and the TCB lock is
4439 * waiting on the iterator lock.
4441 it = stcb->asoc.stcb_starting_point_for_iterator;
4445 if (it->inp != stcb->sctp_ep) {
4446 /* hmm, focused on the wrong one? */
4449 if (it->stcb != stcb) {
4452 it->stcb = LIST_NEXT(stcb, sctp_tcblist);
4453 if (it->stcb == NULL) {
4454 /* done with all asoc's in this assoc */
4455 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
4458 it->inp = LIST_NEXT(inp, sctp_list);
4465 * Free the association after un-hashing the remote port. This
4466 * function ALWAYS returns holding NO LOCK on the stcb. It DOES
4467 * expect that the input to this function IS a locked TCB.
4468 * It will return 0, if it did NOT destroy the association (instead
4469 * it unlocks it. It will return NON-zero if it either destroyed the
4470 * association OR the association is already destroyed.
4473 sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
4476 struct sctp_association *asoc;
4477 struct sctp_nets *net, *prev;
4478 struct sctp_laddr *laddr;
4479 struct sctp_tmit_chunk *chk;
4480 struct sctp_asconf_addr *aparam;
4481 struct sctp_asconf_ack *aack;
4482 struct sctp_stream_reset_list *liste;
4483 struct sctp_queued_to_read *sq;
4484 struct sctp_stream_queue_pending *sp;
4485 sctp_sharedkey_t *shared_key;
4490 /* first, lets purge the entry from the hash table. */
4492 #ifdef SCTP_LOG_CLOSING
4493 sctp_log_closing(inp, stcb, 6);
4495 if (stcb->asoc.state == 0) {
4496 #ifdef SCTP_LOG_CLOSING
4497 sctp_log_closing(inp, NULL, 7);
4499 /* there is no asoc, really TSNH :-0 */
4503 if (stcb->freed_from_where == 0) {
4504 /* Only record the first place free happened from */
4505 stcb->freed_from_where = from_location;
4510 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4511 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4512 /* nothing around */
4515 so = inp->sctp_socket;
4518 * We used timer based freeing if a reader or writer is in the way.
4519 * So we first check if we are actually being called from a timer,
4520 * if so we abort early if a reader or writer is still in the way.
4522 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
4523 (from_inpcbfree == SCTP_NORMAL_PROC)) {
4525 * is it the timer driving us? if so are the reader/writers
4528 if (stcb->asoc.refcnt) {
4529 /* nope, reader or writer in the way */
4530 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4531 /* no asoc destroyed */
4532 SCTP_TCB_UNLOCK(stcb);
4533 #ifdef SCTP_LOG_CLOSING
4534 sctp_log_closing(inp, stcb, 8);
4539 /* now clean up any other timers */
4540 (void)SCTP_OS_TIMER_STOP(&asoc->hb_timer.timer);
4541 asoc->hb_timer.self = NULL;
4542 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4543 asoc->dack_timer.self = NULL;
4544 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4546 * For stream reset we don't blast this unless
4547 * it is a str-reset timer, it might be the
4548 * free-asoc timer which we DON'T want to
4551 if (asoc->strreset_timer.type == SCTP_TIMER_TYPE_STRRESET)
4552 asoc->strreset_timer.self = NULL;
4553 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4554 asoc->asconf_timer.self = NULL;
4555 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4556 asoc->autoclose_timer.self = NULL;
4557 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4558 asoc->shut_guard_timer.self = NULL;
4559 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4560 asoc->delayed_event_timer.self = NULL;
4561 /* Mobility adaptation */
4562 (void)SCTP_OS_TIMER_STOP(&asoc->delete_prim_timer.timer);
4563 asoc->delete_prim_timer.self = NULL;
4564 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4565 (void)SCTP_OS_TIMER_STOP(&net->fr_timer.timer);
4566 net->fr_timer.self = NULL;
4567 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4568 net->rxt_timer.self = NULL;
4569 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4570 net->pmtu_timer.self = NULL;
4572 /* Now the read queue needs to be cleaned up (only once) */
4574 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) {
4575 stcb->asoc.state |= SCTP_STATE_ABOUT_TO_BE_FREED;
4576 SCTP_INP_READ_LOCK(inp);
4577 TAILQ_FOREACH(sq, &inp->read_queue, next) {
4578 if (sq->stcb == stcb) {
4579 sq->do_not_ref_stcb = 1;
4580 sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
4582 * If there is no end, there never will be
4585 if (sq->end_added == 0) {
4586 /* Held for PD-API clear that. */
4587 sq->pdapi_aborted = 1;
4588 sq->held_length = 0;
4589 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) {
4591 * Need to add a PD-API
4592 * aborted indication.
4593 * Setting the control_pdapi
4594 * assures that it will be
4595 * added right after this
4600 stcb->asoc.control_pdapi = sq;
4601 strseq = (sq->sinfo_stream << 16) | sq->sinfo_ssn;
4602 sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION,
4604 SCTP_PARTIAL_DELIVERY_ABORTED,
4607 stcb->asoc.control_pdapi = NULL;
4610 /* Add an end to wake them */
4615 SCTP_INP_READ_UNLOCK(inp);
4616 if (stcb->block_entry) {
4618 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET);
4619 stcb->block_entry->error = ECONNRESET;
4620 stcb->block_entry = NULL;
4623 if ((stcb->asoc.refcnt) || (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE)) {
4625 * Someone holds a reference OR the socket is unaccepted
4628 if ((stcb->asoc.refcnt) ||
4629 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4630 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4631 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4632 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4634 SCTP_TCB_UNLOCK(stcb);
4635 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4636 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4637 /* nothing around */
4640 /* Wake any reader/writers */
4641 sctp_sorwakeup(inp, so);
4642 sctp_sowwakeup(inp, so);
4644 #ifdef SCTP_LOG_CLOSING
4645 sctp_log_closing(inp, stcb, 9);
4647 /* no asoc destroyed */
4650 #ifdef SCTP_LOG_CLOSING
4651 sctp_log_closing(inp, stcb, 10);
4654 * When I reach here, no others want to kill the assoc yet.. and I
4655 * own the lock. Now its possible an abort comes in when I do the
4656 * lock exchange below to grab all the locks to do the final take
4657 * out. to prevent this we increment the count, which will start a
4658 * timer and blow out above thus assuring us that we hold exclusive
4659 * killing of the asoc. Note that after getting back the TCB lock we
4660 * will go ahead and increment the counter back up and stop any
4661 * timer a passing stranger may have started :-S
4663 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4664 atomic_add_int(&stcb->asoc.refcnt, 1);
4666 SCTP_TCB_UNLOCK(stcb);
4668 SCTP_ITERATOR_LOCK();
4669 SCTP_INP_INFO_WLOCK();
4670 SCTP_INP_WLOCK(inp);
4671 SCTP_TCB_LOCK(stcb);
4673 /* Double check the GONE flag */
4674 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4675 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4676 /* nothing around */
4679 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
4680 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4682 * For TCP type we need special handling when we are
4683 * connected. We also include the peel'ed off ones to.
4685 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4686 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED;
4687 inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED;
4690 if (so->so_rcv.sb_cc == 0) {
4691 so->so_state &= ~(SS_ISCONNECTING |
4692 SS_ISDISCONNECTING |
4696 socantrcvmore_locked(so);
4697 sctp_sowwakeup(inp, so);
4698 sctp_sorwakeup(inp, so);
4704 * Make it invalid too, that way if its about to run it will abort
4707 sctp_iterator_asoc_being_freed(inp, stcb);
4708 /* re-increment the lock */
4709 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4710 atomic_add_int(&stcb->asoc.refcnt, -1);
4713 if (inp->sctp_tcbhash) {
4714 LIST_REMOVE(stcb, sctp_tcbhash);
4716 if (stcb->asoc.in_asocid_hash) {
4717 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4719 /* Now lets remove it from the list of ALL associations in the EP */
4720 LIST_REMOVE(stcb, sctp_tcblist);
4721 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4722 SCTP_INP_INCR_REF(inp);
4723 SCTP_INP_WUNLOCK(inp);
4724 SCTP_ITERATOR_UNLOCK();
4726 /* pull from vtag hash */
4727 LIST_REMOVE(stcb, sctp_asocs);
4728 sctp_add_vtag_to_timewait(asoc->my_vtag, SCTP_BASE_SYSCTL(sctp_vtag_time_wait),
4729 inp->sctp_lport, stcb->rport);
4732 * Now restop the timers to be sure this is paranoia at is finest!
4734 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4735 (void)SCTP_OS_TIMER_STOP(&asoc->hb_timer.timer);
4736 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4737 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4738 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4739 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4740 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4741 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4742 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4743 (void)SCTP_OS_TIMER_STOP(&net->fr_timer.timer);
4744 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4745 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4748 asoc->strreset_timer.type = SCTP_TIMER_TYPE_NONE;
4751 * The chunk lists and such SHOULD be empty but we check them just
4754 /* anything on the wheel needs to be removed */
4755 for (i = 0; i < asoc->streamoutcnt; i++) {
4756 struct sctp_stream_out *outs;
4758 outs = &asoc->strmout[i];
4759 /* now clean up any chunks here */
4760 sp = TAILQ_FIRST(&outs->outqueue);
4762 TAILQ_REMOVE(&outs->outqueue, sp, next);
4764 sctp_m_freem(sp->data);
4766 sp->tail_mbuf = NULL;
4768 sctp_free_remote_addr(sp->net);
4769 sctp_free_spbufspace(stcb, asoc, sp);
4770 if (sp->holds_key_ref)
4771 sctp_auth_key_release(stcb, sp->auth_keyid);
4772 /* Free the zone stuff */
4773 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_strmoq), sp);
4774 SCTP_DECR_STRMOQ_COUNT();
4775 /* sa_ignore FREED_MEMORY */
4776 sp = TAILQ_FIRST(&outs->outqueue);
4780 /* sa_ignore FREED_MEMORY */
4781 while ((liste = TAILQ_FIRST(&asoc->resetHead)) != NULL) {
4782 TAILQ_REMOVE(&asoc->resetHead, liste, next_resp);
4783 SCTP_FREE(liste, SCTP_M_STRESET);
4786 sq = TAILQ_FIRST(&asoc->pending_reply_queue);
4788 TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
4790 sctp_m_freem(sq->data);
4793 sctp_free_remote_addr(sq->whoFrom);
4796 /* Free the ctl entry */
4797 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
4798 SCTP_DECR_READQ_COUNT();
4799 /* sa_ignore FREED_MEMORY */
4800 sq = TAILQ_FIRST(&asoc->pending_reply_queue);
4803 chk = TAILQ_FIRST(&asoc->free_chunks);
4805 TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next);
4807 sctp_m_freem(chk->data);
4810 if (chk->holds_key_ref)
4811 sctp_auth_key_release(stcb, chk->auth_keyid);
4813 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4814 SCTP_DECR_CHK_COUNT();
4815 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1);
4816 asoc->free_chunk_cnt--;
4817 /* sa_ignore FREED_MEMORY */
4818 chk = TAILQ_FIRST(&asoc->free_chunks);
4820 /* pending send queue SHOULD be empty */
4821 if (!TAILQ_EMPTY(&asoc->send_queue)) {
4822 chk = TAILQ_FIRST(&asoc->send_queue);
4824 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
4826 sctp_m_freem(chk->data);
4829 if (chk->holds_key_ref)
4830 sctp_auth_key_release(stcb, chk->auth_keyid);
4832 sctp_free_remote_addr(chk->whoTo);
4833 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4834 SCTP_DECR_CHK_COUNT();
4835 /* sa_ignore FREED_MEMORY */
4836 chk = TAILQ_FIRST(&asoc->send_queue);
4841 printf("Freed %d from send_queue\n", ccnt);
4845 /* sent queue SHOULD be empty */
4846 if (!TAILQ_EMPTY(&asoc->sent_queue)) {
4847 chk = TAILQ_FIRST(&asoc->sent_queue);
4849 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
4851 sctp_m_freem(chk->data);
4854 if (chk->holds_key_ref)
4855 sctp_auth_key_release(stcb, chk->auth_keyid);
4857 sctp_free_remote_addr(chk->whoTo);
4858 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4859 SCTP_DECR_CHK_COUNT();
4860 /* sa_ignore FREED_MEMORY */
4861 chk = TAILQ_FIRST(&asoc->sent_queue);
4866 printf("Freed %d from sent_queue\n", ccnt);
4870 /* control queue MAY not be empty */
4871 if (!TAILQ_EMPTY(&asoc->control_send_queue)) {
4872 chk = TAILQ_FIRST(&asoc->control_send_queue);
4874 TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next);
4876 sctp_m_freem(chk->data);
4879 if (chk->holds_key_ref)
4880 sctp_auth_key_release(stcb, chk->auth_keyid);
4882 sctp_free_remote_addr(chk->whoTo);
4883 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4884 SCTP_DECR_CHK_COUNT();
4885 /* sa_ignore FREED_MEMORY */
4886 chk = TAILQ_FIRST(&asoc->control_send_queue);
4891 printf("Freed %d from ctrl_queue\n", ccnt);
4896 /* ASCONF queue MAY not be empty */
4897 if (!TAILQ_EMPTY(&asoc->asconf_send_queue)) {
4898 chk = TAILQ_FIRST(&asoc->asconf_send_queue);
4900 TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next);
4902 sctp_m_freem(chk->data);
4905 if (chk->holds_key_ref)
4906 sctp_auth_key_release(stcb, chk->auth_keyid);
4908 sctp_free_remote_addr(chk->whoTo);
4909 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4910 SCTP_DECR_CHK_COUNT();
4911 /* sa_ignore FREED_MEMORY */
4912 chk = TAILQ_FIRST(&asoc->asconf_send_queue);
4917 printf("Freed %d from asconf_queue\n", ccnt);
4921 if (!TAILQ_EMPTY(&asoc->reasmqueue)) {
4922 chk = TAILQ_FIRST(&asoc->reasmqueue);
4924 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
4926 sctp_m_freem(chk->data);
4929 if (chk->holds_key_ref)
4930 sctp_auth_key_release(stcb, chk->auth_keyid);
4931 sctp_free_remote_addr(chk->whoTo);
4933 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4934 SCTP_DECR_CHK_COUNT();
4935 /* sa_ignore FREED_MEMORY */
4936 chk = TAILQ_FIRST(&asoc->reasmqueue);
4941 printf("Freed %d from reasm_queue\n", ccnt);
4945 if (asoc->mapping_array) {
4946 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4947 asoc->mapping_array = NULL;
4949 if (asoc->nr_mapping_array) {
4950 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4951 asoc->nr_mapping_array = NULL;
4953 /* the stream outs */
4954 if (asoc->strmout) {
4955 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4956 asoc->strmout = NULL;
4958 asoc->strm_realoutsize = asoc->streamoutcnt = 0;
4960 struct sctp_queued_to_read *ctl;
4962 for (i = 0; i < asoc->streamincnt; i++) {
4963 if (!TAILQ_EMPTY(&asoc->strmin[i].inqueue)) {
4964 /* We have somethings on the streamin queue */
4965 ctl = TAILQ_FIRST(&asoc->strmin[i].inqueue);
4967 TAILQ_REMOVE(&asoc->strmin[i].inqueue,
4969 sctp_free_remote_addr(ctl->whoFrom);
4971 sctp_m_freem(ctl->data);
4975 * We don't free the address here
4976 * since all the net's were freed
4979 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
4980 SCTP_DECR_READQ_COUNT();
4981 ctl = TAILQ_FIRST(&asoc->strmin[i].inqueue);
4985 SCTP_FREE(asoc->strmin, SCTP_M_STRMI);
4986 asoc->strmin = NULL;
4988 asoc->streamincnt = 0;
4989 while (!TAILQ_EMPTY(&asoc->nets)) {
4990 /* sa_ignore FREED_MEMORY */
4991 net = TAILQ_FIRST(&asoc->nets);
4992 /* pull from list */
4993 if ((SCTP_BASE_INFO(ipi_count_raddr) == 0) || (prev == net)) {
4995 panic("no net's left alloc'ed, or list points to itself");
5000 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
5001 sctp_free_remote_addr(net);
5004 while (!LIST_EMPTY(&asoc->sctp_restricted_addrs)) {
5005 /* sa_ignore FREED_MEMORY */
5006 laddr = LIST_FIRST(&asoc->sctp_restricted_addrs);
5007 sctp_remove_laddr(laddr);
5010 /* pending asconf (address) parameters */
5011 while (!TAILQ_EMPTY(&asoc->asconf_queue)) {
5012 /* sa_ignore FREED_MEMORY */
5013 aparam = TAILQ_FIRST(&asoc->asconf_queue);
5014 TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
5015 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
5017 while (!TAILQ_EMPTY(&asoc->asconf_ack_sent)) {
5018 /* sa_ignore FREED_MEMORY */
5019 aack = TAILQ_FIRST(&asoc->asconf_ack_sent);
5020 TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
5021 if (aack->data != NULL) {
5022 sctp_m_freem(aack->data);
5024 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
5026 /* clean up auth stuff */
5027 if (asoc->local_hmacs)
5028 sctp_free_hmaclist(asoc->local_hmacs);
5029 if (asoc->peer_hmacs)
5030 sctp_free_hmaclist(asoc->peer_hmacs);
5032 if (asoc->local_auth_chunks)
5033 sctp_free_chunklist(asoc->local_auth_chunks);
5034 if (asoc->peer_auth_chunks)
5035 sctp_free_chunklist(asoc->peer_auth_chunks);
5037 sctp_free_authinfo(&asoc->authinfo);
5039 shared_key = LIST_FIRST(&asoc->shared_keys);
5040 while (shared_key) {
5041 LIST_REMOVE(shared_key, next);
5042 sctp_free_sharedkey(shared_key);
5043 /* sa_ignore FREED_MEMORY */
5044 shared_key = LIST_FIRST(&asoc->shared_keys);
5047 /* Insert new items here :> */
5049 /* Get rid of LOCK */
5050 SCTP_TCB_LOCK_DESTROY(stcb);
5051 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
5052 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5053 SCTP_INP_INFO_WUNLOCK();
5054 SCTP_INP_RLOCK(inp);
5056 #ifdef SCTP_TRACK_FREED_ASOCS
5057 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5058 /* now clean up the tasoc itself */
5059 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5060 SCTP_DECR_ASOC_COUNT();
5062 LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist);
5065 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5066 SCTP_DECR_ASOC_COUNT();
5068 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5069 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5071 * If its NOT the inp_free calling us AND sctp_close
5072 * as been called, we call back...
5074 SCTP_INP_RUNLOCK(inp);
5076 * This will start the kill timer (if we are the
5077 * lastone) since we hold an increment yet. But this
5078 * is the only safe way to do this since otherwise
5079 * if the socket closes at the same time we are here
5080 * we might collide in the cleanup.
5082 sctp_inpcb_free(inp,
5083 SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
5084 SCTP_CALLED_DIRECTLY_NOCMPSET);
5085 SCTP_INP_DECR_REF(inp);
5088 /* The socket is still open. */
5089 SCTP_INP_DECR_REF(inp);
5092 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5093 SCTP_INP_RUNLOCK(inp);
5096 /* destroyed the asoc */
5097 #ifdef SCTP_LOG_CLOSING
5098 sctp_log_closing(inp, NULL, 11);
5106 * determine if a destination is "reachable" based upon the addresses bound
5107 * to the current endpoint (e.g. only v4 or v6 currently bound)
5110 * FIX: if we allow assoc-level bindx(), then this needs to be fixed to use
5111 * assoc level v4/v6 flags, as the assoc *may* not have the same address
5112 * types bound as its endpoint
5115 sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
5117 struct sctp_inpcb *inp;
5121 * No locks here, the TCB, in all cases is already locked and an
5122 * assoc is up. There is either a INP lock by the caller applied (in
5123 * asconf case when deleting an address) or NOT in the HB case,
5124 * however if HB then the INP increment is up and the INP will not
5125 * be removed (on top of the fact that we have a TCB lock). So we
5126 * only want to read the sctp_flags, which is either bound-all or
5127 * not.. no protection needed since once an assoc is up you can't be
5128 * changing your binding.
5130 inp = stcb->sctp_ep;
5131 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5132 /* if bound all, destination is not restricted */
5134 * RRS: Question during lock work: Is this correct? If you
5135 * are bound-all you still might need to obey the V4--V6
5136 * flags??? IMO this bound-all stuff needs to be removed!
5140 /* NOTE: all "scope" checks are done when local addresses are added */
5141 if (destaddr->sa_family == AF_INET6) {
5142 answer = inp->ip_inp.inp.inp_vflag & INP_IPV6;
5143 } else if (destaddr->sa_family == AF_INET) {
5144 answer = inp->ip_inp.inp.inp_vflag & INP_IPV4;
5146 /* invalid family, so it's unreachable */
5153 * update the inp_vflags on an endpoint
5156 sctp_update_ep_vflag(struct sctp_inpcb *inp)
5158 struct sctp_laddr *laddr;
5160 /* first clear the flag */
5161 inp->ip_inp.inp.inp_vflag = 0;
5162 /* set the flag based on addresses on the ep list */
5163 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5164 if (laddr->ifa == NULL) {
5165 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
5169 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
5172 if (laddr->ifa->address.sa.sa_family == AF_INET6) {
5173 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5174 } else if (laddr->ifa->address.sa.sa_family == AF_INET) {
5175 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5181 * Add the address to the endpoint local address list There is nothing to be
5182 * done if we are bound to all addresses
5185 sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
5187 struct sctp_laddr *laddr;
5192 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5193 /* You are already bound to all. You have it already */
5196 if (ifa->address.sa.sa_family == AF_INET6) {
5197 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5198 /* Can't bind a non-useable addr. */
5202 /* first, is it already present? */
5203 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5204 if (laddr->ifa == ifa) {
5211 /* Not in the ep list */
5212 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action);
5216 /* update inp_vflag flags */
5217 if (ifa->address.sa.sa_family == AF_INET6) {
5218 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5219 } else if (ifa->address.sa.sa_family == AF_INET) {
5220 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5228 * select a new (hopefully reachable) destination net (should only be used
5229 * when we deleted an ep addr that is the only usable source address to reach
5230 * the destination net)
5233 sctp_select_primary_destination(struct sctp_tcb *stcb)
5235 struct sctp_nets *net;
5237 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5238 /* for now, we'll just pick the first reachable one we find */
5239 if (net->dest_state & SCTP_ADDR_UNCONFIRMED)
5241 if (sctp_destination_is_reachable(stcb,
5242 (struct sockaddr *)&net->ro._l_addr)) {
5243 /* found a reachable destination */
5244 stcb->asoc.primary_destination = net;
5247 /* I can't there from here! ...we're gonna die shortly... */
5252 * Delete the address from the endpoint local address list There is nothing
5253 * to be done if we are bound to all addresses
5256 sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa)
5258 struct sctp_laddr *laddr;
5262 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5263 /* You are already bound to all. You have it already */
5266 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5267 if (laddr->ifa == ifa) {
5272 if (fnd && (inp->laddr_count < 2)) {
5273 /* can't delete unless there are at LEAST 2 addresses */
5278 * clean up any use of this address go through our
5279 * associations and clear any last_used_address that match
5280 * this one for each assoc, see if a new primary_destination
5283 struct sctp_tcb *stcb;
5285 /* clean up "next_addr_touse" */
5286 if (inp->next_addr_touse == laddr)
5287 /* delete this address */
5288 inp->next_addr_touse = NULL;
5290 /* clean up "last_used_address" */
5291 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5292 struct sctp_nets *net;
5294 SCTP_TCB_LOCK(stcb);
5295 if (stcb->asoc.last_used_address == laddr)
5296 /* delete this address */
5297 stcb->asoc.last_used_address = NULL;
5299 * Now spin through all the nets and purge any ref
5302 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5303 if (net->ro._s_addr &&
5304 (net->ro._s_addr->ifa == laddr->ifa)) {
5305 /* Yep, purge src address selected */
5308 /* delete this address if cached */
5312 net->ro.ro_rt = NULL;
5314 sctp_free_ifa(net->ro._s_addr);
5315 net->ro._s_addr = NULL;
5316 net->src_addr_selected = 0;
5319 SCTP_TCB_UNLOCK(stcb);
5320 } /* for each tcb */
5321 /* remove it from the ep list */
5322 sctp_remove_laddr(laddr);
5324 /* update inp_vflag flags */
5325 sctp_update_ep_vflag(inp);
5331 * Add the address to the TCB local address restricted list.
5332 * This is a "pending" address list (eg. addresses waiting for an
5333 * ASCONF-ACK response) and cannot be used as a valid source address.
5336 sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5338 struct sctp_inpcb *inp;
5339 struct sctp_laddr *laddr;
5340 struct sctpladdr *list;
5343 * Assumes TCB is locked.. and possibly the INP. May need to
5344 * confirm/fix that if we need it and is not the case.
5346 list = &stcb->asoc.sctp_restricted_addrs;
5348 inp = stcb->sctp_ep;
5349 if (ifa->address.sa.sa_family == AF_INET6) {
5350 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5351 /* Can't bind a non-existent addr. */
5355 /* does the address already exist? */
5356 LIST_FOREACH(laddr, list, sctp_nxt_addr) {
5357 if (laddr->ifa == ifa) {
5362 /* add to the list */
5363 (void)sctp_insert_laddr(list, ifa, 0);
5368 * insert an laddr entry with the given ifa for the desired list
5371 sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
5373 struct sctp_laddr *laddr;
5375 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
5376 if (laddr == NULL) {
5377 /* out of memory? */
5378 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
5381 SCTP_INCR_LADDR_COUNT();
5382 bzero(laddr, sizeof(*laddr));
5383 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
5385 laddr->action = act;
5386 atomic_add_int(&ifa->refcount, 1);
5388 LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr);
5394 * Remove an laddr entry from the local address list (on an assoc)
5397 sctp_remove_laddr(struct sctp_laddr *laddr)
5400 /* remove from the list */
5401 LIST_REMOVE(laddr, sctp_nxt_addr);
5402 sctp_free_ifa(laddr->ifa);
5403 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr);
5404 SCTP_DECR_LADDR_COUNT();
5408 * Remove a local address from the TCB local address restricted list
5411 sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5413 struct sctp_inpcb *inp;
5414 struct sctp_laddr *laddr;
5417 * This is called by asconf work. It is assumed that a) The TCB is
5418 * locked and b) The INP is locked. This is true in as much as I can
5419 * trace through the entry asconf code where I did these locks.
5420 * Again, the ASCONF code is a bit different in that it does lock
5421 * the INP during its work often times. This must be since we don't
5422 * want other proc's looking up things while what they are looking
5423 * up is changing :-D
5426 inp = stcb->sctp_ep;
5427 /* if subset bound and don't allow ASCONF's, can't delete last */
5428 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
5429 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
5430 if (stcb->sctp_ep->laddr_count < 2) {
5431 /* can't delete last address */
5435 LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
5436 /* remove the address if it exists */
5437 if (laddr->ifa == NULL)
5439 if (laddr->ifa == ifa) {
5440 sctp_remove_laddr(laddr);
5445 /* address not found! */
5450 * Temporarily remove for __APPLE__ until we use the Tiger equivalents
5453 static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;
5454 static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR;
5460 * SCTP initialization for the PCB structures should be called by
5461 * the sctp_init() funciton.
5466 if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) {
5467 /* error I was called twice */
5470 SCTP_BASE_VAR(sctp_pcb_initialized) = 1;
5472 #if defined(SCTP_LOCAL_TRACE_BUF)
5473 bzero(&SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));
5475 (void)SCTP_GETTIME_TIMEVAL(&tv);
5476 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5477 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t) tv.tv_sec;
5478 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t) tv.tv_usec;
5480 SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t) tv.tv_sec;
5481 SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t) tv.tv_usec;
5483 /* init the empty list of (All) Endpoints */
5484 LIST_INIT(&SCTP_BASE_INFO(listhead));
5487 /* init the hash table of endpoints */
5488 TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize));
5489 TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize));
5490 TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale));
5491 SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31),
5492 &SCTP_BASE_INFO(hashasocmark));
5493 SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5494 &SCTP_BASE_INFO(hashmark));
5495 SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5496 &SCTP_BASE_INFO(hashtcpmark));
5497 SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize);
5500 SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH,
5501 &SCTP_BASE_INFO(hashvrfmark));
5503 SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE,
5504 &SCTP_BASE_INFO(vrf_ifn_hashmark));
5505 /* init the zones */
5507 * FIX ME: Should check for NULL returns, but if it does fail we are
5508 * doomed to panic anyways... add later maybe.
5510 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep",
5511 sizeof(struct sctp_inpcb), maxsockets);
5513 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc",
5514 sizeof(struct sctp_tcb), sctp_max_number_of_assoc);
5516 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr",
5517 sizeof(struct sctp_laddr),
5518 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5520 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr",
5521 sizeof(struct sctp_nets),
5522 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5524 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk",
5525 sizeof(struct sctp_tmit_chunk),
5526 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5528 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq",
5529 sizeof(struct sctp_queued_to_read),
5530 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5532 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out",
5533 sizeof(struct sctp_stream_queue_pending),
5534 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5536 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf",
5537 sizeof(struct sctp_asconf),
5538 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5540 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack",
5541 sizeof(struct sctp_asconf_ack),
5542 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5545 /* Master Lock INIT for info structure */
5546 SCTP_INP_INFO_LOCK_INIT();
5547 SCTP_STATLOG_INIT_LOCK();
5549 SCTP_IPI_COUNT_INIT();
5550 SCTP_IPI_ADDR_INIT();
5551 #ifdef SCTP_PACKET_LOGGING
5552 SCTP_IP_PKTLOG_INIT();
5554 LIST_INIT(&SCTP_BASE_INFO(addr_wq));
5556 SCTP_WQ_ADDR_INIT();
5557 /* not sure if we need all the counts */
5558 SCTP_BASE_INFO(ipi_count_ep) = 0;
5559 /* assoc/tcb zone info */
5560 SCTP_BASE_INFO(ipi_count_asoc) = 0;
5561 /* local addrlist zone info */
5562 SCTP_BASE_INFO(ipi_count_laddr) = 0;
5563 /* remote addrlist zone info */
5564 SCTP_BASE_INFO(ipi_count_raddr) = 0;
5566 SCTP_BASE_INFO(ipi_count_chunk) = 0;
5568 /* socket queue zone info */
5569 SCTP_BASE_INFO(ipi_count_readq) = 0;
5571 /* stream out queue cont */
5572 SCTP_BASE_INFO(ipi_count_strmoq) = 0;
5574 SCTP_BASE_INFO(ipi_free_strmoq) = 0;
5575 SCTP_BASE_INFO(ipi_free_chunks) = 0;
5577 SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer));
5579 /* Init the TIMEWAIT list */
5580 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5581 LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]);
5584 sctp_startup_iterator();
5587 * INIT the default VRF which for BSD is the only one, other O/S's
5588 * may have more. But initially they must start with one and then
5589 * add the VRF's as addresses are added.
5591 sctp_init_vrf_list(SCTP_DEFAULT_VRF);
5596 * Assumes that the SCTP_BASE_INFO() lock is NOT held.
5599 sctp_pcb_finish(void)
5601 struct sctp_vrflist *vrf_bucket;
5602 struct sctp_vrf *vrf;
5603 struct sctp_ifn *ifn;
5604 struct sctp_ifa *ifa;
5605 struct sctpvtaghead *chain;
5606 struct sctp_tagblock *twait_block, *prev_twait_block;
5607 struct sctp_laddr *wi;
5611 * Free BSD the it thread never exits but we do clean up. The only
5612 * way freebsd reaches here if we have VRF's but we still add the
5613 * ifdef to make it compile on old versions.
5616 struct sctp_iterator *it, *nit;
5618 SCTP_IPI_ITERATOR_WQ_LOCK();
5619 it = TAILQ_FIRST(&sctp_it_ctl.iteratorhead);
5621 nit = TAILQ_NEXT(it, sctp_nxt_itr);
5622 if (it->vn != curvnet) {
5626 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
5628 if (it->function_atend != NULL) {
5629 (*it->function_atend) (it->pointer, it->val);
5631 SCTP_FREE(it, SCTP_M_ITER);
5634 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5635 SCTP_ITERATOR_LOCK();
5636 if ((sctp_it_ctl.cur_it) &&
5637 (sctp_it_ctl.cur_it->vn == curvnet)) {
5638 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
5640 SCTP_ITERATOR_UNLOCK();
5643 SCTP_OS_TIMER_STOP(&SCTP_BASE_INFO(addr_wq_timer.timer));
5644 SCTP_WQ_ADDR_LOCK();
5645 while ((wi = LIST_FIRST(&SCTP_BASE_INFO(addr_wq))) != NULL) {
5646 LIST_REMOVE(wi, sctp_nxt_addr);
5647 SCTP_DECR_LADDR_COUNT();
5648 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi);
5650 SCTP_WQ_ADDR_UNLOCK();
5653 * free the vrf/ifn/ifa lists and hashes (be sure address monitor is
5656 vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))];
5657 while ((vrf = LIST_FIRST(vrf_bucket)) != NULL) {
5658 while ((ifn = LIST_FIRST(&vrf->ifnlist)) != NULL) {
5659 while ((ifa = LIST_FIRST(&ifn->ifalist)) != NULL) {
5661 LIST_REMOVE(ifa, next_bucket);
5662 LIST_REMOVE(ifa, next_ifa);
5663 SCTP_FREE(ifa, SCTP_M_IFA);
5666 LIST_REMOVE(ifn, next_bucket);
5667 LIST_REMOVE(ifn, next_ifn);
5668 SCTP_FREE(ifn, SCTP_M_IFN);
5670 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
5672 LIST_REMOVE(vrf, next_vrf);
5673 SCTP_FREE(vrf, SCTP_M_VRF);
5675 /* free the vrf hashes */
5676 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark));
5677 SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark));
5680 * free the TIMEWAIT list elements malloc'd in the function
5681 * sctp_add_vtag_to_timewait()...
5683 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5684 chain = &SCTP_BASE_INFO(vtag_timewait)[i];
5685 if (!LIST_EMPTY(chain)) {
5686 prev_twait_block = NULL;
5687 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
5688 if (prev_twait_block) {
5689 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
5691 prev_twait_block = twait_block;
5693 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
5697 /* free the locks and mutexes */
5698 #ifdef SCTP_PACKET_LOGGING
5699 SCTP_IP_PKTLOG_DESTROY();
5701 SCTP_IPI_ADDR_DESTROY();
5702 SCTP_STATLOG_DESTROY();
5703 SCTP_INP_INFO_LOCK_DESTROY();
5705 SCTP_WQ_ADDR_DESTROY();
5707 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep));
5708 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc));
5709 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr));
5710 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net));
5711 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk));
5712 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq));
5713 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq));
5714 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf));
5715 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack));
5716 /* Get rid of other stuff to */
5717 if (SCTP_BASE_INFO(sctp_asochash) != NULL)
5718 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark));
5719 if (SCTP_BASE_INFO(sctp_ephash) != NULL)
5720 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark));
5721 if (SCTP_BASE_INFO(sctp_tcpephash) != NULL)
5722 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark));
5728 sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m,
5729 int iphlen, int offset, int limit, struct sctphdr *sh,
5730 struct sockaddr *altsa)
5733 * grub through the INIT pulling addresses and loading them to the
5734 * nets structure in the asoc. The from address in the mbuf should
5735 * also be loaded (if it is not already). This routine can be called
5736 * with either INIT or INIT-ACK's as long as the m points to the IP
5737 * packet and the offset points to the beginning of the parameters.
5739 struct sctp_inpcb *inp, *l_inp;
5740 struct sctp_nets *net, *net_tmp;
5742 struct sctp_paramhdr *phdr, parm_buf;
5743 struct sctp_tcb *stcb_tmp;
5744 uint16_t ptype, plen;
5745 struct sockaddr *sa;
5746 struct sockaddr_storage dest_store;
5747 struct sockaddr *local_sa = (struct sockaddr *)&dest_store;
5748 struct sockaddr_in sin;
5749 struct sockaddr_in6 sin6;
5750 uint8_t random_store[SCTP_PARAM_BUFFER_SIZE];
5751 struct sctp_auth_random *p_random = NULL;
5752 uint16_t random_len = 0;
5753 uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE];
5754 struct sctp_auth_hmac_algo *hmacs = NULL;
5755 uint16_t hmacs_len = 0;
5756 uint8_t saw_asconf = 0;
5757 uint8_t saw_asconf_ack = 0;
5758 uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE];
5759 struct sctp_auth_chunk_list *chunks = NULL;
5760 uint16_t num_chunks = 0;
5761 sctp_key_t *new_key;
5763 int got_random = 0, got_hmacs = 0, got_chklist = 0;
5765 /* First get the destination address setup too. */
5766 memset(&sin, 0, sizeof(sin));
5767 memset(&sin6, 0, sizeof(sin6));
5769 sin.sin_family = AF_INET;
5770 sin.sin_len = sizeof(sin);
5771 sin.sin_port = stcb->rport;
5773 sin6.sin6_family = AF_INET6;
5774 sin6.sin6_len = sizeof(struct sockaddr_in6);
5775 sin6.sin6_port = stcb->rport;
5776 if (altsa == NULL) {
5777 iph = mtod(m, struct ip *);
5778 switch (iph->ip_v) {
5782 struct sockaddr_in *sin_2;
5784 sin_2 = (struct sockaddr_in *)(local_sa);
5785 memset(sin_2, 0, sizeof(sin));
5786 sin_2->sin_family = AF_INET;
5787 sin_2->sin_len = sizeof(sin);
5788 sin_2->sin_port = sh->dest_port;
5789 sin_2->sin_addr.s_addr = iph->ip_dst.s_addr;
5790 sin.sin_addr = iph->ip_src;
5791 sa = (struct sockaddr *)&sin;
5795 case IPV6_VERSION >> 4:
5798 struct ip6_hdr *ip6;
5799 struct sockaddr_in6 *sin6_2;
5801 ip6 = mtod(m, struct ip6_hdr *);
5802 sin6_2 = (struct sockaddr_in6 *)(local_sa);
5803 memset(sin6_2, 0, sizeof(sin6));
5804 sin6_2->sin6_family = AF_INET6;
5805 sin6_2->sin6_len = sizeof(struct sockaddr_in6);
5806 sin6_2->sin6_port = sh->dest_port;
5807 sin6.sin6_addr = ip6->ip6_src;
5808 sa = (struct sockaddr *)&sin6;
5818 * For cookies we use the src address NOT from the packet
5819 * but from the original INIT
5823 /* Turn off ECN until we get through all params */
5824 stcb->asoc.ecn_allowed = 0;
5825 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5826 /* mark all addresses that we have currently on the list */
5827 net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC;
5829 /* does the source address already exist? if so skip it */
5830 l_inp = inp = stcb->sctp_ep;
5832 atomic_add_int(&stcb->asoc.refcnt, 1);
5833 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, local_sa, stcb);
5834 atomic_add_int(&stcb->asoc.refcnt, -1);
5836 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) {
5837 /* we must add the source address */
5838 /* no scope set here since we have a tcb already. */
5839 if ((sa->sa_family == AF_INET) &&
5840 (stcb->asoc.ipv4_addr_legal)) {
5841 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) {
5844 } else if ((sa->sa_family == AF_INET6) &&
5845 (stcb->asoc.ipv6_addr_legal)) {
5846 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
5851 if (net_tmp != NULL && stcb_tmp == stcb) {
5852 net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC;
5853 } else if (stcb_tmp != stcb) {
5854 /* It belongs to another association? */
5856 SCTP_TCB_UNLOCK(stcb_tmp);
5860 if (stcb->asoc.state == 0) {
5861 /* the assoc was freed? */
5865 * peer must explicitly turn this on. This may have been initialized
5866 * to be "on" in order to allow local addr changes while INIT's are
5869 stcb->asoc.peer_supports_asconf = 0;
5870 /* now we must go through each of the params. */
5871 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
5873 ptype = ntohs(phdr->param_type);
5874 plen = ntohs(phdr->param_length);
5876 * printf("ptype => %0x, plen => %d\n", (uint32_t)ptype,
5879 if (offset + plen > limit) {
5885 if (ptype == SCTP_IPV4_ADDRESS) {
5886 if (stcb->asoc.ipv4_addr_legal) {
5887 struct sctp_ipv4addr_param *p4, p4_buf;
5889 /* ok get the v4 address and check/add */
5890 phdr = sctp_get_next_param(m, offset,
5891 (struct sctp_paramhdr *)&p4_buf,
5893 if (plen != sizeof(struct sctp_ipv4addr_param) ||
5897 p4 = (struct sctp_ipv4addr_param *)phdr;
5898 sin.sin_addr.s_addr = p4->addr;
5899 if (IN_MULTICAST(sin.sin_addr.s_addr)) {
5900 /* Skip multi-cast addresses */
5903 if ((sin.sin_addr.s_addr == INADDR_BROADCAST) ||
5904 (sin.sin_addr.s_addr == INADDR_ANY)) {
5907 sa = (struct sockaddr *)&sin;
5908 inp = stcb->sctp_ep;
5909 atomic_add_int(&stcb->asoc.refcnt, 1);
5910 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
5912 atomic_add_int(&stcb->asoc.refcnt, -1);
5914 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) ||
5916 /* we must add the source address */
5918 * no scope set since we have a tcb
5923 * we must validate the state again
5927 if (stcb->asoc.state == 0) {
5928 /* the assoc was freed? */
5931 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) {
5934 } else if (stcb_tmp == stcb) {
5935 if (stcb->asoc.state == 0) {
5936 /* the assoc was freed? */
5942 ~SCTP_ADDR_NOT_IN_ASSOC;
5946 * strange, address is in another
5947 * assoc? straighten out locks.
5950 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
5955 sctp_abort_an_association(stcb_tmp->sctp_ep,
5956 stcb_tmp, 1, NULL, 0);
5959 SCTP_TCB_UNLOCK(stcb_tmp);
5961 if (stcb->asoc.state == 0) {
5962 /* the assoc was freed? */
5968 } else if (ptype == SCTP_IPV6_ADDRESS) {
5969 if (stcb->asoc.ipv6_addr_legal) {
5970 /* ok get the v6 address and check/add */
5971 struct sctp_ipv6addr_param *p6, p6_buf;
5973 phdr = sctp_get_next_param(m, offset,
5974 (struct sctp_paramhdr *)&p6_buf,
5976 if (plen != sizeof(struct sctp_ipv6addr_param) ||
5980 p6 = (struct sctp_ipv6addr_param *)phdr;
5981 memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
5983 if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) {
5984 /* Skip multi-cast addresses */
5987 if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) {
5989 * Link local make no sense without
5994 sa = (struct sockaddr *)&sin6;
5995 inp = stcb->sctp_ep;
5996 atomic_add_int(&stcb->asoc.refcnt, 1);
5997 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
5999 atomic_add_int(&stcb->asoc.refcnt, -1);
6000 if (stcb_tmp == NULL &&
6001 (inp == stcb->sctp_ep || inp == NULL)) {
6003 * we must validate the state again
6007 if (stcb->asoc.state == 0) {
6008 /* the assoc was freed? */
6012 * we must add the address, no scope
6015 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) {
6018 } else if (stcb_tmp == stcb) {
6020 * we must validate the state again
6023 if (stcb->asoc.state == 0) {
6024 /* the assoc was freed? */
6030 ~SCTP_ADDR_NOT_IN_ASSOC;
6034 * strange, address is in another
6035 * assoc? straighten out locks.
6038 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6043 sctp_abort_an_association(stcb_tmp->sctp_ep,
6044 stcb_tmp, 1, NULL, 0);
6047 SCTP_TCB_UNLOCK(stcb_tmp);
6049 if (stcb->asoc.state == 0) {
6050 /* the assoc was freed? */
6056 } else if (ptype == SCTP_ECN_CAPABLE) {
6057 stcb->asoc.ecn_allowed = 1;
6058 } else if (ptype == SCTP_ULP_ADAPTATION) {
6059 if (stcb->asoc.state != SCTP_STATE_OPEN) {
6060 struct sctp_adaptation_layer_indication ai,
6063 phdr = sctp_get_next_param(m, offset,
6064 (struct sctp_paramhdr *)&ai, sizeof(ai));
6065 aip = (struct sctp_adaptation_layer_indication *)phdr;
6067 stcb->asoc.peers_adaptation = ntohl(aip->indication);
6068 stcb->asoc.adaptation_needed = 1;
6071 } else if (ptype == SCTP_SET_PRIM_ADDR) {
6072 struct sctp_asconf_addr_param lstore, *fee;
6073 struct sctp_asconf_addrv4_param *fii;
6075 struct sockaddr *lsa = NULL;
6077 stcb->asoc.peer_supports_asconf = 1;
6078 if (plen > sizeof(lstore)) {
6081 phdr = sctp_get_next_param(m, offset,
6082 (struct sctp_paramhdr *)&lstore,
6083 min(plen, sizeof(lstore)));
6087 fee = (struct sctp_asconf_addr_param *)phdr;
6088 lptype = ntohs(fee->addrp.ph.param_type);
6089 if (lptype == SCTP_IPV4_ADDRESS) {
6091 sizeof(struct sctp_asconf_addrv4_param)) {
6092 SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n",
6093 (int)sizeof(struct sctp_asconf_addrv4_param),
6096 fii = (struct sctp_asconf_addrv4_param *)fee;
6097 sin.sin_addr.s_addr = fii->addrp.addr;
6098 lsa = (struct sockaddr *)&sin;
6100 } else if (lptype == SCTP_IPV6_ADDRESS) {
6102 sizeof(struct sctp_asconf_addr_param)) {
6103 SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n",
6104 (int)sizeof(struct sctp_asconf_addr_param),
6107 memcpy(sin6.sin6_addr.s6_addr,
6109 sizeof(fee->addrp.addr));
6110 lsa = (struct sockaddr *)&sin6;
6114 (void)sctp_set_primary_addr(stcb, sa, NULL);
6116 } else if (ptype == SCTP_HAS_NAT_SUPPORT) {
6117 stcb->asoc.peer_supports_nat = 1;
6118 } else if (ptype == SCTP_PRSCTP_SUPPORTED) {
6119 /* Peer supports pr-sctp */
6120 stcb->asoc.peer_supports_prsctp = 1;
6121 } else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) {
6122 /* A supported extension chunk */
6123 struct sctp_supported_chunk_types_param *pr_supported;
6124 uint8_t local_store[SCTP_PARAM_BUFFER_SIZE];
6127 phdr = sctp_get_next_param(m, offset,
6128 (struct sctp_paramhdr *)&local_store, min(sizeof(local_store), plen));
6132 stcb->asoc.peer_supports_asconf = 0;
6133 stcb->asoc.peer_supports_prsctp = 0;
6134 stcb->asoc.peer_supports_pktdrop = 0;
6135 stcb->asoc.peer_supports_strreset = 0;
6136 stcb->asoc.peer_supports_nr_sack = 0;
6137 stcb->asoc.peer_supports_auth = 0;
6138 pr_supported = (struct sctp_supported_chunk_types_param *)phdr;
6139 num_ent = plen - sizeof(struct sctp_paramhdr);
6140 for (i = 0; i < num_ent; i++) {
6141 switch (pr_supported->chunk_types[i]) {
6143 case SCTP_ASCONF_ACK:
6144 stcb->asoc.peer_supports_asconf = 1;
6146 case SCTP_FORWARD_CUM_TSN:
6147 stcb->asoc.peer_supports_prsctp = 1;
6149 case SCTP_PACKET_DROPPED:
6150 stcb->asoc.peer_supports_pktdrop = 1;
6152 case SCTP_NR_SELECTIVE_ACK:
6153 if (SCTP_BASE_SYSCTL(sctp_nr_sack_on_off))
6154 stcb->asoc.peer_supports_nr_sack = 1;
6156 stcb->asoc.peer_supports_nr_sack = 0;
6158 case SCTP_STREAM_RESET:
6159 stcb->asoc.peer_supports_strreset = 1;
6161 case SCTP_AUTHENTICATION:
6162 stcb->asoc.peer_supports_auth = 1;
6165 /* one I have not learned yet */
6170 } else if (ptype == SCTP_ECN_NONCE_SUPPORTED) {
6171 /* Peer supports ECN-nonce */
6172 stcb->asoc.peer_supports_ecn_nonce = 1;
6173 stcb->asoc.ecn_nonce_allowed = 1;
6174 } else if (ptype == SCTP_RANDOM) {
6175 if (plen > sizeof(random_store))
6178 /* already processed a RANDOM */
6181 phdr = sctp_get_next_param(m, offset,
6182 (struct sctp_paramhdr *)random_store,
6183 min(sizeof(random_store), plen));
6186 p_random = (struct sctp_auth_random *)phdr;
6187 random_len = plen - sizeof(*p_random);
6188 /* enforce the random length */
6189 if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) {
6190 SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n");
6194 } else if (ptype == SCTP_HMAC_LIST) {
6198 if (plen > sizeof(hmacs_store))
6201 /* already processed a HMAC list */
6204 phdr = sctp_get_next_param(m, offset,
6205 (struct sctp_paramhdr *)hmacs_store,
6206 min(plen, sizeof(hmacs_store)));
6209 hmacs = (struct sctp_auth_hmac_algo *)phdr;
6210 hmacs_len = plen - sizeof(*hmacs);
6211 num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]);
6212 /* validate the hmac list */
6213 if (sctp_verify_hmac_param(hmacs, num_hmacs)) {
6216 if (stcb->asoc.peer_hmacs != NULL)
6217 sctp_free_hmaclist(stcb->asoc.peer_hmacs);
6218 stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs);
6219 if (stcb->asoc.peer_hmacs != NULL) {
6220 for (i = 0; i < num_hmacs; i++) {
6221 (void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs,
6222 ntohs(hmacs->hmac_ids[i]));
6226 } else if (ptype == SCTP_CHUNK_LIST) {
6229 if (plen > sizeof(chunks_store))
6232 /* already processed a Chunks list */
6235 phdr = sctp_get_next_param(m, offset,
6236 (struct sctp_paramhdr *)chunks_store,
6237 min(plen, sizeof(chunks_store)));
6240 chunks = (struct sctp_auth_chunk_list *)phdr;
6241 num_chunks = plen - sizeof(*chunks);
6242 if (stcb->asoc.peer_auth_chunks != NULL)
6243 sctp_clear_chunklist(stcb->asoc.peer_auth_chunks);
6245 stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist();
6246 for (i = 0; i < num_chunks; i++) {
6247 (void)sctp_auth_add_chunk(chunks->chunk_types[i],
6248 stcb->asoc.peer_auth_chunks);
6249 /* record asconf/asconf-ack if listed */
6250 if (chunks->chunk_types[i] == SCTP_ASCONF)
6252 if (chunks->chunk_types[i] == SCTP_ASCONF_ACK)
6257 } else if ((ptype == SCTP_HEARTBEAT_INFO) ||
6258 (ptype == SCTP_STATE_COOKIE) ||
6259 (ptype == SCTP_UNRECOG_PARAM) ||
6260 (ptype == SCTP_COOKIE_PRESERVE) ||
6261 (ptype == SCTP_SUPPORTED_ADDRTYPE) ||
6262 (ptype == SCTP_ADD_IP_ADDRESS) ||
6263 (ptype == SCTP_DEL_IP_ADDRESS) ||
6264 (ptype == SCTP_ERROR_CAUSE_IND) ||
6265 (ptype == SCTP_SUCCESS_REPORT)) {
6268 if ((ptype & 0x8000) == 0x0000) {
6270 * must stop processing the rest of the
6271 * param's. Any report bits were handled
6273 * sctp_arethere_unrecognized_parameters()
6274 * when the INIT or INIT-ACK was first seen.
6281 offset += SCTP_SIZE32(plen);
6282 if (offset >= limit) {
6285 phdr = sctp_get_next_param(m, offset, &parm_buf,
6288 /* Now check to see if we need to purge any addresses */
6289 for (net = TAILQ_FIRST(&stcb->asoc.nets); net != NULL; net = net_tmp) {
6290 net_tmp = TAILQ_NEXT(net, sctp_next);
6291 if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) ==
6292 SCTP_ADDR_NOT_IN_ASSOC) {
6293 /* This address has been removed from the asoc */
6294 /* remove and free it */
6295 stcb->asoc.numnets--;
6296 TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next);
6297 sctp_free_remote_addr(net);
6298 if (net == stcb->asoc.primary_destination) {
6299 stcb->asoc.primary_destination = NULL;
6300 sctp_select_primary_destination(stcb);
6304 /* validate authentication required parameters */
6305 if (got_random && got_hmacs) {
6306 stcb->asoc.peer_supports_auth = 1;
6308 stcb->asoc.peer_supports_auth = 0;
6310 if (!stcb->asoc.peer_supports_auth && got_chklist) {
6311 /* peer does not support auth but sent a chunks list? */
6314 if (!SCTP_BASE_SYSCTL(sctp_asconf_auth_nochk) && stcb->asoc.peer_supports_asconf &&
6315 !stcb->asoc.peer_supports_auth) {
6316 /* peer supports asconf but not auth? */
6318 } else if ((stcb->asoc.peer_supports_asconf) && (stcb->asoc.peer_supports_auth) &&
6319 ((saw_asconf == 0) || (saw_asconf_ack == 0))) {
6322 /* concatenate the full random key */
6323 keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len;
6324 if (chunks != NULL) {
6325 keylen += sizeof(*chunks) + num_chunks;
6327 new_key = sctp_alloc_key(keylen);
6328 if (new_key != NULL) {
6329 /* copy in the RANDOM */
6330 if (p_random != NULL) {
6331 keylen = sizeof(*p_random) + random_len;
6332 bcopy(p_random, new_key->key, keylen);
6334 /* append in the AUTH chunks */
6335 if (chunks != NULL) {
6336 bcopy(chunks, new_key->key + keylen,
6337 sizeof(*chunks) + num_chunks);
6338 keylen += sizeof(*chunks) + num_chunks;
6340 /* append in the HMACs */
6341 if (hmacs != NULL) {
6342 bcopy(hmacs, new_key->key + keylen,
6343 sizeof(*hmacs) + hmacs_len);
6346 /* failed to get memory for the key */
6349 if (stcb->asoc.authinfo.peer_random != NULL)
6350 sctp_free_key(stcb->asoc.authinfo.peer_random);
6351 stcb->asoc.authinfo.peer_random = new_key;
6352 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid);
6353 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid);
6359 sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa,
6360 struct sctp_nets *net)
6362 /* make sure the requested primary address exists in the assoc */
6363 if (net == NULL && sa)
6364 net = sctp_findnet(stcb, sa);
6367 /* didn't find the requested primary address! */
6370 /* set the primary address */
6371 if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
6372 /* Must be confirmed, so queue to set */
6373 net->dest_state |= SCTP_ADDR_REQ_PRIMARY;
6376 stcb->asoc.primary_destination = net;
6377 net->dest_state &= ~SCTP_ADDR_WAS_PRIMARY;
6378 net = TAILQ_FIRST(&stcb->asoc.nets);
6379 if (net != stcb->asoc.primary_destination) {
6381 * first one on the list is NOT the primary
6382 * sctp_cmpaddr() is much more efficent if the
6383 * primary is the first on the list, make it so.
6385 TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6386 TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6393 sctp_is_vtag_good(struct sctp_inpcb *inp, uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now, int save_in_twait)
6396 * This function serves two purposes. It will see if a TAG can be
6397 * re-used and return 1 for yes it is ok and 0 for don't use that
6398 * tag. A secondary function it will do is purge out old tags that
6401 struct sctpvtaghead *chain;
6402 struct sctp_tagblock *twait_block;
6403 struct sctpasochead *head;
6404 struct sctp_tcb *stcb;
6407 SCTP_INP_INFO_RLOCK();
6408 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag,
6409 SCTP_BASE_INFO(hashasocmark))];
6412 goto skip_vtag_check;
6414 LIST_FOREACH(stcb, head, sctp_asocs) {
6416 * We choose not to lock anything here. TCB's can't be
6417 * removed since we have the read lock, so they can't be
6418 * freed on us, same thing for the INP. I may be wrong with
6419 * this assumption, but we will go with it for now :-)
6421 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
6424 if (stcb->asoc.my_vtag == tag) {
6426 if (stcb->rport != rport) {
6429 if (stcb->sctp_ep->sctp_lport != lport) {
6432 /* Its a used tag set */
6433 SCTP_INP_INFO_WUNLOCK();
6439 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
6440 /* Now what about timed wait ? */
6441 if (!LIST_EMPTY(chain)) {
6443 * Block(s) are present, lets see if we have this tag in the
6446 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6447 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
6448 if (twait_block->vtag_block[i].v_tag == 0) {
6451 } else if ((long)twait_block->vtag_block[i].tv_sec_at_expire <
6453 /* Audit expires this guy */
6454 twait_block->vtag_block[i].tv_sec_at_expire = 0;
6455 twait_block->vtag_block[i].v_tag = 0;
6456 twait_block->vtag_block[i].lport = 0;
6457 twait_block->vtag_block[i].rport = 0;
6458 } else if ((twait_block->vtag_block[i].v_tag == tag) &&
6459 (twait_block->vtag_block[i].lport == lport) &&
6460 (twait_block->vtag_block[i].rport == rport)) {
6461 /* Bad tag, sorry :< */
6462 SCTP_INP_INFO_WUNLOCK();
6468 SCTP_INP_INFO_RUNLOCK();
6473 static sctp_assoc_t reneged_asoc_ids[256];
6474 static uint8_t reneged_at = 0;
6478 sctp_drain_mbufs(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
6481 * We must hunt this association for MBUF's past the cumack (i.e.
6482 * out of order data that we can renege on).
6484 struct sctp_association *asoc;
6485 struct sctp_tmit_chunk *chk, *nchk;
6486 uint32_t cumulative_tsn_p1;
6487 struct sctp_queued_to_read *ctl, *nctl;
6492 /* We look for anything larger than the cum-ack + 1 */
6495 if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) {
6496 /* none we can reneg on. */
6499 SCTP_STAT_INCR(sctps_protocol_drains_done);
6500 cumulative_tsn_p1 = asoc->cumulative_tsn + 1;
6502 /* First look in the re-assembly queue */
6503 chk = TAILQ_FIRST(&asoc->reasmqueue);
6505 /* Get the next one */
6506 nchk = TAILQ_NEXT(chk, sctp_next);
6507 if (compare_with_wrap(chk->rec.data.TSN_seq,
6508 cumulative_tsn_p1, MAX_TSN)) {
6509 /* Yep it is above cum-ack */
6511 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.TSN_seq, asoc->mapping_array_base_tsn);
6512 asoc->size_on_reasm_queue = sctp_sbspace_sub(asoc->size_on_reasm_queue, chk->send_size);
6513 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6514 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6515 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
6517 sctp_m_freem(chk->data);
6520 sctp_free_a_chunk(stcb, chk);
6524 /* Ok that was fun, now we will drain all the inbound streams? */
6525 for (strmat = 0; strmat < asoc->streamincnt; strmat++) {
6526 ctl = TAILQ_FIRST(&asoc->strmin[strmat].inqueue);
6528 nctl = TAILQ_NEXT(ctl, next);
6529 if (compare_with_wrap(ctl->sinfo_tsn,
6530 cumulative_tsn_p1, MAX_TSN)) {
6531 /* Yep it is above cum-ack */
6533 SCTP_CALC_TSN_TO_GAP(gap, ctl->sinfo_tsn, asoc->mapping_array_base_tsn);
6534 asoc->size_on_all_streams = sctp_sbspace_sub(asoc->size_on_all_streams, ctl->length);
6535 sctp_ucount_decr(asoc->cnt_on_all_streams);
6536 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6537 TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, ctl, next);
6539 sctp_m_freem(ctl->data);
6542 sctp_free_remote_addr(ctl->whoFrom);
6543 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
6544 SCTP_DECR_READQ_COUNT();
6550 /* We must back down to see what the new highest is */
6551 for (i = asoc->highest_tsn_inside_map;
6552 (compare_with_wrap(i, asoc->mapping_array_base_tsn, MAX_TSN) || (i == asoc->mapping_array_base_tsn));
6554 SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn);
6555 if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) {
6556 asoc->highest_tsn_inside_map = i;
6562 asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1;
6565 * Question, should we go through the delivery queue? The
6566 * only reason things are on here is the app not reading OR
6567 * a p-d-api up. An attacker COULD send enough in to
6568 * initiate the PD-API and then send a bunch of stuff to
6569 * other streams... these would wind up on the delivery
6570 * queue.. and then we would not get to them. But in order
6571 * to do this I then have to back-track and un-deliver
6572 * sequence numbers in streams.. el-yucko. I think for now
6573 * we will NOT look at the delivery queue and leave it to be
6574 * something to consider later. An alternative would be to
6575 * abort the P-D-API with a notification and then deliver
6576 * the data.... Or another method might be to keep track of
6577 * how many times the situation occurs and if we see a
6578 * possible attack underway just abort the association.
6581 SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt);
6584 * Now do we need to find a new
6585 * asoc->highest_tsn_inside_map?
6587 asoc->last_revoke_count = cnt;
6588 (void)SCTP_OS_TIMER_STOP(&stcb->asoc.dack_timer.timer);
6589 /* sa_ignore NO_NULL_CHK */
6590 sctp_send_sack(stcb);
6591 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED);
6592 reneged_asoc_ids[reneged_at] = sctp_get_associd(stcb);
6596 * Another issue, in un-setting the TSN's in the mapping array we
6597 * DID NOT adjust the higest_tsn marker. This will cause one of two
6598 * things to occur. It may cause us to do extra work in checking for
6599 * our mapping array movement. More importantly it may cause us to
6600 * SACK every datagram. This may not be a bad thing though since we
6601 * will recover once we get our cum-ack above and all this stuff we
6610 * We must walk the PCB lists for ALL associations here. The system
6611 * is LOW on MBUF's and needs help. This is where reneging will
6612 * occur. We really hope this does NOT happen!
6614 VNET_ITERATOR_DECL(vnet_iter);
6615 VNET_LIST_RLOCK_NOSLEEP();
6616 VNET_FOREACH(vnet_iter) {
6617 CURVNET_SET(vnet_iter);
6618 struct sctp_inpcb *inp;
6619 struct sctp_tcb *stcb;
6621 SCTP_STAT_INCR(sctps_protocol_drain_calls);
6622 if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
6629 SCTP_INP_INFO_RLOCK();
6630 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
6631 /* For each endpoint */
6632 SCTP_INP_RLOCK(inp);
6633 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
6634 /* For each association */
6635 SCTP_TCB_LOCK(stcb);
6636 sctp_drain_mbufs(inp, stcb);
6637 SCTP_TCB_UNLOCK(stcb);
6639 SCTP_INP_RUNLOCK(inp);
6641 SCTP_INP_INFO_RUNLOCK();
6644 VNET_LIST_RUNLOCK_NOSLEEP();
6648 * start a new iterator
6649 * iterates through all endpoints and associations based on the pcb_state
6650 * flags and asoc_state. "af" (mandatory) is executed for all matching
6651 * assocs and "ef" (optional) is executed when the iterator completes.
6652 * "inpf" (optional) is executed for each new endpoint as it is being
6653 * iterated through. inpe (optional) is called when the inp completes
6654 * its way through all the stcbs.
6657 sctp_initiate_iterator(inp_func inpf,
6661 uint32_t pcb_features,
6662 uint32_t asoc_state,
6666 struct sctp_inpcb *s_inp,
6667 uint8_t chunk_output_off)
6669 struct sctp_iterator *it = NULL;
6674 SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator),
6677 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
6680 memset(it, 0, sizeof(*it));
6681 it->function_assoc = af;
6682 it->function_inp = inpf;
6684 it->done_current_ep = 0;
6686 it->done_current_ep = 1;
6687 it->function_atend = ef;
6690 it->pcb_flags = pcb_state;
6691 it->pcb_features = pcb_features;
6692 it->asoc_state = asoc_state;
6693 it->function_inp_end = inpe;
6694 it->no_chunk_output = chunk_output_off;
6698 it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP;
6700 SCTP_INP_INFO_RLOCK();
6701 it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead));
6703 SCTP_INP_INFO_RUNLOCK();
6704 it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP;
6707 SCTP_IPI_ITERATOR_WQ_LOCK();
6709 SCTP_INP_INCR_REF(it->inp);
6711 TAILQ_INSERT_TAIL(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
6712 if (sctp_it_ctl.iterator_running == 0) {
6713 sctp_wakeup_iterator();
6715 SCTP_IPI_ITERATOR_WQ_UNLOCK();
6716 /* sa_ignore MEMLEAK {memory is put on the tailq for the iterator} */