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 separate 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 that's 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 length %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 length %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");
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, remove the
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 | rport), 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);
1014 sctp_does_stcb_own_this_addr(struct sctp_tcb *stcb, struct sockaddr *to)
1016 int loopback_scope, ipv4_local_scope, local_scope, site_scope;
1017 int ipv4_addr_legal, ipv6_addr_legal;
1018 struct sctp_vrf *vrf;
1019 struct sctp_ifn *sctp_ifn;
1020 struct sctp_ifa *sctp_ifa;
1022 loopback_scope = stcb->asoc.loopback_scope;
1023 ipv4_local_scope = stcb->asoc.ipv4_local_scope;
1024 local_scope = stcb->asoc.local_scope;
1025 site_scope = stcb->asoc.site_scope;
1026 ipv4_addr_legal = ipv6_addr_legal = 0;
1027 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1028 ipv6_addr_legal = 1;
1029 if (SCTP_IPV6_V6ONLY(stcb->sctp_ep) == 0) {
1030 ipv4_addr_legal = 1;
1033 ipv4_addr_legal = 1;
1036 SCTP_IPI_ADDR_RLOCK();
1037 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
1039 /* no vrf, no addresses */
1040 SCTP_IPI_ADDR_RUNLOCK();
1043 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1044 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
1045 if ((loopback_scope == 0) &&
1046 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
1049 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
1050 if (sctp_is_addr_restricted(stcb, sctp_ifa))
1052 switch (sctp_ifa->address.sa.sa_family) {
1055 if (ipv4_addr_legal) {
1056 struct sockaddr_in *sin,
1059 sin = &sctp_ifa->address.sin;
1060 rsin = (struct sockaddr_in *)to;
1061 if ((ipv4_local_scope == 0) &&
1062 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
1065 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
1066 SCTP_IPI_ADDR_RUNLOCK();
1074 if (ipv6_addr_legal) {
1075 struct sockaddr_in6 *sin6,
1078 sin6 = &sctp_ifa->address.sin6;
1079 rsin6 = (struct sockaddr_in6 *)to;
1080 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
1081 if (local_scope == 0)
1083 if (sin6->sin6_scope_id == 0) {
1084 if (sa6_recoverscope(sin6) != 0)
1088 if ((site_scope == 0) &&
1089 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
1092 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
1093 SCTP_IPI_ADDR_RUNLOCK();
1106 struct sctp_laddr *laddr;
1108 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
1109 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
1112 if (laddr->ifa->address.sa.sa_family != to->sa_family) {
1115 switch (to->sa_family) {
1119 struct sockaddr_in *sin, *rsin;
1121 sin = (struct sockaddr_in *)&laddr->ifa->address.sin;
1122 rsin = (struct sockaddr_in *)to;
1123 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
1124 SCTP_IPI_ADDR_RUNLOCK();
1133 struct sockaddr_in6 *sin6, *rsin6;
1135 sin6 = (struct sockaddr_in6 *)&laddr->ifa->address.sin6;
1136 rsin6 = (struct sockaddr_in6 *)to;
1137 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
1138 SCTP_IPI_ADDR_RUNLOCK();
1152 SCTP_IPI_ADDR_RUNLOCK();
1159 * 1) If I return a NULL you must decrement any INP ref cnt. 2) If I find an
1160 * stcb, both will be locked (locked_tcb and stcb) but decrement will be done
1161 * (if locked == NULL). 3) Decrement happens on return ONLY if locked ==
1166 sctp_findassociation_ep_addr(struct sctp_inpcb **inp_p, struct sockaddr *remote,
1167 struct sctp_nets **netp, struct sockaddr *local, struct sctp_tcb *locked_tcb)
1169 struct sctpasochead *head;
1170 struct sctp_inpcb *inp;
1171 struct sctp_tcb *stcb = NULL;
1172 struct sctp_nets *net;
1176 if (remote->sa_family == AF_INET) {
1177 rport = (((struct sockaddr_in *)remote)->sin_port);
1178 } else if (remote->sa_family == AF_INET6) {
1179 rport = (((struct sockaddr_in6 *)remote)->sin6_port);
1185 * UN-lock so we can do proper locking here this occurs when
1186 * called from load_addresses_from_init.
1188 atomic_add_int(&locked_tcb->asoc.refcnt, 1);
1189 SCTP_TCB_UNLOCK(locked_tcb);
1191 SCTP_INP_INFO_RLOCK();
1192 if (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
1194 * Now either this guy is our listener or it's the
1195 * connector. If it is the one that issued the connect, then
1196 * it's only chance is to be the first TCB in the list. If
1197 * it is the acceptor, then do the special_lookup to hash
1198 * and find the real inp.
1200 if ((inp->sctp_socket) && (inp->sctp_socket->so_qlimit)) {
1201 /* to is peer addr, from is my addr */
1202 stcb = sctp_tcb_special_locate(inp_p, remote, local,
1203 netp, inp->def_vrf_id);
1204 if ((stcb != NULL) && (locked_tcb == NULL)) {
1205 /* we have a locked tcb, lower refcount */
1206 SCTP_INP_DECR_REF(inp);
1208 if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
1209 SCTP_INP_RLOCK(locked_tcb->sctp_ep);
1210 SCTP_TCB_LOCK(locked_tcb);
1211 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1212 SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
1214 SCTP_INP_INFO_RUNLOCK();
1217 SCTP_INP_WLOCK(inp);
1218 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1221 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1225 SCTP_TCB_LOCK(stcb);
1227 if (stcb->rport != rport) {
1228 /* remote port does not match. */
1229 SCTP_TCB_UNLOCK(stcb);
1232 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1233 SCTP_TCB_UNLOCK(stcb);
1236 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1237 SCTP_TCB_UNLOCK(stcb);
1240 /* now look at the list of remote addresses */
1241 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1243 if (net == (TAILQ_NEXT(net, sctp_next))) {
1244 panic("Corrupt net list");
1247 if (net->ro._l_addr.sa.sa_family !=
1248 remote->sa_family) {
1249 /* not the same family */
1252 switch (remote->sa_family) {
1255 struct sockaddr_in *sin,
1258 sin = (struct sockaddr_in *)
1260 rsin = (struct sockaddr_in *)remote;
1261 if (sin->sin_addr.s_addr ==
1262 rsin->sin_addr.s_addr) {
1267 if (locked_tcb == NULL) {
1268 SCTP_INP_DECR_REF(inp);
1269 } else if (locked_tcb != stcb) {
1270 SCTP_TCB_LOCK(locked_tcb);
1273 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1275 SCTP_INP_WUNLOCK(inp);
1276 SCTP_INP_INFO_RUNLOCK();
1284 struct sockaddr_in6 *sin6,
1287 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1288 rsin6 = (struct sockaddr_in6 *)remote;
1289 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1295 if (locked_tcb == NULL) {
1296 SCTP_INP_DECR_REF(inp);
1297 } else if (locked_tcb != stcb) {
1298 SCTP_TCB_LOCK(locked_tcb);
1301 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1303 SCTP_INP_WUNLOCK(inp);
1304 SCTP_INP_INFO_RUNLOCK();
1315 SCTP_TCB_UNLOCK(stcb);
1318 SCTP_INP_WLOCK(inp);
1319 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1322 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport,
1323 inp->sctp_hashmark)];
1327 LIST_FOREACH(stcb, head, sctp_tcbhash) {
1328 if (stcb->rport != rport) {
1329 /* remote port does not match */
1332 SCTP_TCB_LOCK(stcb);
1333 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1334 SCTP_TCB_UNLOCK(stcb);
1337 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1338 SCTP_TCB_UNLOCK(stcb);
1341 /* now look at the list of remote addresses */
1342 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1344 if (net == (TAILQ_NEXT(net, sctp_next))) {
1345 panic("Corrupt net list");
1348 if (net->ro._l_addr.sa.sa_family !=
1349 remote->sa_family) {
1350 /* not the same family */
1353 switch (remote->sa_family) {
1356 struct sockaddr_in *sin,
1359 sin = (struct sockaddr_in *)
1361 rsin = (struct sockaddr_in *)remote;
1362 if (sin->sin_addr.s_addr ==
1363 rsin->sin_addr.s_addr) {
1368 if (locked_tcb == NULL) {
1369 SCTP_INP_DECR_REF(inp);
1370 } else if (locked_tcb != stcb) {
1371 SCTP_TCB_LOCK(locked_tcb);
1374 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1376 SCTP_INP_WUNLOCK(inp);
1377 SCTP_INP_INFO_RUNLOCK();
1385 struct sockaddr_in6 *sin6,
1388 sin6 = (struct sockaddr_in6 *)
1390 rsin6 = (struct sockaddr_in6 *)remote;
1391 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1397 if (locked_tcb == NULL) {
1398 SCTP_INP_DECR_REF(inp);
1399 } else if (locked_tcb != stcb) {
1400 SCTP_TCB_LOCK(locked_tcb);
1403 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1405 SCTP_INP_WUNLOCK(inp);
1406 SCTP_INP_INFO_RUNLOCK();
1417 SCTP_TCB_UNLOCK(stcb);
1421 /* clean up for returning null */
1423 SCTP_TCB_LOCK(locked_tcb);
1424 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1426 SCTP_INP_WUNLOCK(inp);
1427 SCTP_INP_INFO_RUNLOCK();
1433 * Find an association for a specific endpoint using the association id given
1434 * out in the COMM_UP notification
1438 sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1441 * Use my the assoc_id to find a endpoint
1443 struct sctpasochead *head;
1444 struct sctp_tcb *stcb;
1448 SCTP_PRINTF("TSNH ep_associd\n");
1451 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1452 SCTP_PRINTF("TSNH ep_associd0\n");
1455 id = (uint32_t) asoc_id;
1456 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
1458 /* invalid id TSNH */
1459 SCTP_PRINTF("TSNH ep_associd1\n");
1462 LIST_FOREACH(stcb, head, sctp_tcbasocidhash) {
1463 if (stcb->asoc.assoc_id == id) {
1464 if (inp != stcb->sctp_ep) {
1466 * some other guy has the same id active (id
1469 SCTP_PRINTF("TSNH ep_associd2\n");
1472 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1476 SCTP_TCB_LOCK(stcb);
1486 sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1488 struct sctp_tcb *stcb;
1490 SCTP_INP_RLOCK(inp);
1491 stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
1492 SCTP_INP_RUNLOCK(inp);
1497 static struct sctp_inpcb *
1498 sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head,
1499 uint16_t lport, uint32_t vrf_id)
1501 struct sctp_inpcb *inp;
1502 struct sockaddr_in *sin;
1505 struct sockaddr_in6 *sin6;
1508 struct sctp_laddr *laddr;
1511 struct sockaddr_in6 *intf_addr6;
1518 * Endpoint probe expects that the INP_INFO is locked.
1524 switch (nam->sa_family) {
1526 sin = (struct sockaddr_in *)nam;
1530 sin6 = (struct sockaddr_in6 *)nam;
1534 /* unsupported family */
1541 LIST_FOREACH(inp, head, sctp_hash) {
1542 SCTP_INP_RLOCK(inp);
1543 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1544 SCTP_INP_RUNLOCK(inp);
1547 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) &&
1548 (inp->sctp_lport == lport)) {
1550 if ((nam->sa_family == AF_INET) &&
1551 (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1552 SCTP_IPV6_V6ONLY(inp)) {
1553 /* IPv4 on a IPv6 socket with ONLY IPv6 set */
1554 SCTP_INP_RUNLOCK(inp);
1557 /* A V6 address and the endpoint is NOT bound V6 */
1558 if (nam->sa_family == AF_INET6 &&
1559 (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
1560 SCTP_INP_RUNLOCK(inp);
1563 /* does a VRF id match? */
1565 if (inp->def_vrf_id == vrf_id)
1568 SCTP_INP_RUNLOCK(inp);
1573 SCTP_INP_RUNLOCK(inp);
1575 if ((nam->sa_family == AF_INET) &&
1576 (sin->sin_addr.s_addr == INADDR_ANY)) {
1577 /* Can't hunt for one that has no address specified */
1581 if ((nam->sa_family == AF_INET6) &&
1582 (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))) {
1583 /* Can't hunt for one that has no address specified */
1588 * ok, not bound to all so see if we can find a EP bound to this
1591 LIST_FOREACH(inp, head, sctp_hash) {
1592 SCTP_INP_RLOCK(inp);
1593 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1594 SCTP_INP_RUNLOCK(inp);
1597 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
1598 SCTP_INP_RUNLOCK(inp);
1602 * Ok this could be a likely candidate, look at all of its
1605 if (inp->sctp_lport != lport) {
1606 SCTP_INP_RUNLOCK(inp);
1609 /* does a VRF id match? */
1611 if (inp->def_vrf_id == vrf_id)
1615 SCTP_INP_RUNLOCK(inp);
1618 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1619 if (laddr->ifa == NULL) {
1620 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
1624 SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ",
1626 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1627 SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n");
1630 if (laddr->ifa->address.sa.sa_family == nam->sa_family) {
1631 /* possible, see if it matches */
1632 struct sockaddr_in *intf_addr;
1634 intf_addr = &laddr->ifa->address.sin;
1635 switch (nam->sa_family) {
1637 if (sin->sin_addr.s_addr ==
1638 intf_addr->sin_addr.s_addr) {
1639 SCTP_INP_RUNLOCK(inp);
1645 intf_addr6 = &laddr->ifa->address.sin6;
1646 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1648 SCTP_INP_RUNLOCK(inp);
1656 SCTP_INP_RUNLOCK(inp);
1662 static struct sctp_inpcb *
1663 sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
1665 struct sctppcbhead *head;
1666 struct sctp_inpcb *t_inp;
1669 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1670 SCTP_BASE_INFO(hashmark))];
1671 LIST_FOREACH(t_inp, head, sctp_hash) {
1672 if (t_inp->sctp_lport != lport) {
1675 /* is it in the VRF in question */
1677 if (t_inp->def_vrf_id == vrf_id)
1682 /* This one is in use. */
1683 /* check the v6/v4 binding issue */
1684 if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1685 SCTP_IPV6_V6ONLY(t_inp)) {
1686 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1687 /* collision in V6 space */
1690 /* inp is BOUND_V4 no conflict */
1693 } else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1694 /* t_inp is bound v4 and v6, conflict always */
1697 /* t_inp is bound only V4 */
1698 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1699 SCTP_IPV6_V6ONLY(inp)) {
1703 /* else fall through to conflict */
1712 sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
1714 /* For 1-2-1 with port reuse */
1715 struct sctppcbhead *head;
1716 struct sctp_inpcb *tinp;
1718 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
1719 /* only works with port reuse on */
1722 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) {
1725 SCTP_INP_RUNLOCK(inp);
1726 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport,
1727 SCTP_BASE_INFO(hashmark))];
1728 /* Kick out all non-listeners to the TCP hash */
1729 LIST_FOREACH(tinp, head, sctp_hash) {
1730 if (tinp->sctp_lport != inp->sctp_lport) {
1733 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1736 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
1739 if (tinp->sctp_socket->so_qlimit) {
1742 SCTP_INP_WLOCK(tinp);
1743 LIST_REMOVE(tinp, sctp_hash);
1744 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))];
1745 tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
1746 LIST_INSERT_HEAD(head, tinp, sctp_hash);
1747 SCTP_INP_WUNLOCK(tinp);
1749 SCTP_INP_WLOCK(inp);
1750 /* Pull from where he was */
1751 LIST_REMOVE(inp, sctp_hash);
1752 inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL;
1753 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))];
1754 LIST_INSERT_HEAD(head, inp, sctp_hash);
1755 SCTP_INP_WUNLOCK(inp);
1756 SCTP_INP_RLOCK(inp);
1762 sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock,
1766 * First we check the hash table to see if someone has this port
1767 * bound with just the port.
1769 struct sctp_inpcb *inp;
1770 struct sctppcbhead *head;
1771 struct sockaddr_in *sin;
1772 struct sockaddr_in6 *sin6;
1776 if (nam->sa_family == AF_INET) {
1777 sin = (struct sockaddr_in *)nam;
1778 lport = ((struct sockaddr_in *)nam)->sin_port;
1779 } else if (nam->sa_family == AF_INET6) {
1780 sin6 = (struct sockaddr_in6 *)nam;
1781 lport = ((struct sockaddr_in6 *)nam)->sin6_port;
1783 /* unsupported family */
1787 * I could cheat here and just cast to one of the types but we will
1788 * do it right. It also provides the check against an Unsupported
1791 /* Find the head of the ALLADDR chain */
1792 if (have_lock == 0) {
1793 SCTP_INP_INFO_RLOCK();
1795 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1796 SCTP_BASE_INFO(hashmark))];
1797 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1800 * If the TCP model exists it could be that the main listening
1801 * endpoint is gone but there still exists a connected socket for
1802 * this guy. If so we can return the first one that we find. This
1803 * may NOT be the correct one so the caller should be wary on the
1804 * returned INP. Currently the only caller that sets find_tcp_pool
1805 * is in bindx where we are verifying that a user CAN bind the
1806 * address. He either has bound it already, or someone else has, or
1807 * its open to bind, so this is good enough.
1809 if (inp == NULL && find_tcp_pool) {
1810 for (i = 0; i < SCTP_BASE_INFO(hashtcpmark) + 1; i++) {
1811 head = &SCTP_BASE_INFO(sctp_tcpephash)[i];
1812 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1819 SCTP_INP_INCR_REF(inp);
1821 if (have_lock == 0) {
1822 SCTP_INP_INFO_RUNLOCK();
1828 * Find an association for an endpoint with the pointer to whom you want to
1829 * send to and the endpoint pointer. The address can be IPv4 or IPv6. We may
1830 * need to change the *to to some other struct like a mbuf...
1833 sctp_findassociation_addr_sa(struct sockaddr *to, struct sockaddr *from,
1834 struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool,
1837 struct sctp_inpcb *inp = NULL;
1838 struct sctp_tcb *retval;
1840 SCTP_INP_INFO_RLOCK();
1841 if (find_tcp_pool) {
1842 if (inp_p != NULL) {
1843 retval = sctp_tcb_special_locate(inp_p, from, to, netp,
1846 retval = sctp_tcb_special_locate(&inp, from, to, netp,
1849 if (retval != NULL) {
1850 SCTP_INP_INFO_RUNLOCK();
1854 inp = sctp_pcb_findep(to, 0, 1, vrf_id);
1855 if (inp_p != NULL) {
1858 SCTP_INP_INFO_RUNLOCK();
1864 * ok, we have an endpoint, now lets find the assoc for it (if any)
1865 * we now place the source address or from in the to of the find
1866 * endpoint call. Since in reality this chain is used from the
1867 * inbound packet side.
1869 if (inp_p != NULL) {
1870 retval = sctp_findassociation_ep_addr(inp_p, from, netp, to,
1873 retval = sctp_findassociation_ep_addr(&inp, from, netp, to,
1881 * This routine will grub through the mbuf that is a INIT or INIT-ACK and
1882 * find all addresses that the sender has specified in any address list. Each
1883 * address will be used to lookup the TCB and see if one exits.
1885 static struct sctp_tcb *
1886 sctp_findassociation_special_addr(struct mbuf *m, int iphlen, int offset,
1887 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp,
1888 struct sockaddr *dest)
1890 struct sockaddr_in sin4;
1891 struct sockaddr_in6 sin6;
1892 struct sctp_paramhdr *phdr, parm_buf;
1893 struct sctp_tcb *retval;
1894 uint32_t ptype, plen;
1896 memset(&sin4, 0, sizeof(sin4));
1897 memset(&sin6, 0, sizeof(sin6));
1898 sin4.sin_len = sizeof(sin4);
1899 sin4.sin_family = AF_INET;
1900 sin4.sin_port = sh->src_port;
1901 sin6.sin6_len = sizeof(sin6);
1902 sin6.sin6_family = AF_INET6;
1903 sin6.sin6_port = sh->src_port;
1906 offset += sizeof(struct sctp_init_chunk);
1908 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
1909 while (phdr != NULL) {
1910 /* now we must see if we want the parameter */
1911 ptype = ntohs(phdr->param_type);
1912 plen = ntohs(phdr->param_length);
1916 if (ptype == SCTP_IPV4_ADDRESS &&
1917 plen == sizeof(struct sctp_ipv4addr_param)) {
1918 /* Get the rest of the address */
1919 struct sctp_ipv4addr_param ip4_parm, *p4;
1921 phdr = sctp_get_next_param(m, offset,
1922 (struct sctp_paramhdr *)&ip4_parm, min(plen, sizeof(ip4_parm)));
1926 p4 = (struct sctp_ipv4addr_param *)phdr;
1927 memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr));
1929 retval = sctp_findassociation_ep_addr(inp_p,
1930 (struct sockaddr *)&sin4, netp, dest, NULL);
1931 if (retval != NULL) {
1934 } else if (ptype == SCTP_IPV6_ADDRESS &&
1935 plen == sizeof(struct sctp_ipv6addr_param)) {
1936 /* Get the rest of the address */
1937 struct sctp_ipv6addr_param ip6_parm, *p6;
1939 phdr = sctp_get_next_param(m, offset,
1940 (struct sctp_paramhdr *)&ip6_parm, min(plen, sizeof(ip6_parm)));
1944 p6 = (struct sctp_ipv6addr_param *)phdr;
1945 memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr));
1947 retval = sctp_findassociation_ep_addr(inp_p,
1948 (struct sockaddr *)&sin6, netp, dest, NULL);
1949 if (retval != NULL) {
1953 offset += SCTP_SIZE32(plen);
1954 phdr = sctp_get_next_param(m, offset, &parm_buf,
1960 static struct sctp_tcb *
1961 sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag,
1962 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport,
1963 uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
1966 * Use my vtag to hash. If we find it we then verify the source addr
1967 * is in the assoc. If all goes well we save a bit on rec of a
1970 struct sctpasochead *head;
1971 struct sctp_nets *net;
1972 struct sctp_tcb *stcb;
1976 SCTP_INP_INFO_RLOCK();
1977 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag,
1978 SCTP_BASE_INFO(hashasocmark))];
1981 SCTP_INP_INFO_RUNLOCK();
1984 LIST_FOREACH(stcb, head, sctp_asocs) {
1985 SCTP_INP_RLOCK(stcb->sctp_ep);
1986 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1987 SCTP_INP_RUNLOCK(stcb->sctp_ep);
1990 SCTP_TCB_LOCK(stcb);
1991 SCTP_INP_RUNLOCK(stcb->sctp_ep);
1992 if (stcb->asoc.my_vtag == vtag) {
1994 if (stcb->rport != rport) {
1995 SCTP_TCB_UNLOCK(stcb);
1998 if (stcb->sctp_ep->sctp_lport != lport) {
1999 SCTP_TCB_UNLOCK(stcb);
2002 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
2003 SCTP_TCB_UNLOCK(stcb);
2006 /* RRS:Need toaddr check here */
2007 if (sctp_does_stcb_own_this_addr(stcb, to) == 0) {
2008 /* Endpoint does not own this address */
2009 SCTP_TCB_UNLOCK(stcb);
2014 * If we have both vtags that's all we match
2017 if (stcb->asoc.peer_vtag == remote_tag) {
2019 * If both tags match we consider it
2020 * conclusive and check NO
2021 * source/destination addresses
2026 if (skip_src_check) {
2029 net = sctp_findnet(stcb, from);
2031 *netp = NULL; /* unknown */
2034 *inp_p = stcb->sctp_ep;
2035 SCTP_INP_INFO_RUNLOCK();
2038 net = sctp_findnet(stcb, from);
2042 SCTP_STAT_INCR(sctps_vtagexpress);
2043 *inp_p = stcb->sctp_ep;
2044 SCTP_INP_INFO_RUNLOCK();
2048 * not him, this should only happen in rare
2049 * cases so I peg it.
2051 SCTP_STAT_INCR(sctps_vtagbogus);
2054 SCTP_TCB_UNLOCK(stcb);
2056 SCTP_INP_INFO_RUNLOCK();
2061 * Find an association with the pointer to the inbound IP packet. This can be
2062 * a IPv4 or IPv6 packet.
2065 sctp_findassociation_addr(struct mbuf *m, int iphlen, int offset,
2066 struct sctphdr *sh, struct sctp_chunkhdr *ch,
2067 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2071 struct sctp_tcb *retval;
2072 struct sockaddr_storage to_store, from_store;
2073 struct sockaddr *to = (struct sockaddr *)&to_store;
2074 struct sockaddr *from = (struct sockaddr *)&from_store;
2075 struct sctp_inpcb *inp;
2077 iph = mtod(m, struct ip *);
2078 switch (iph->ip_v) {
2082 struct sockaddr_in *from4;
2084 from4 = (struct sockaddr_in *)&from_store;
2085 bzero(from4, sizeof(*from4));
2086 from4->sin_family = AF_INET;
2087 from4->sin_len = sizeof(struct sockaddr_in);
2088 from4->sin_addr.s_addr = iph->ip_src.s_addr;
2089 from4->sin_port = sh->src_port;
2093 case IPV6_VERSION >> 4:
2096 struct ip6_hdr *ip6;
2097 struct sockaddr_in6 *from6;
2099 ip6 = mtod(m, struct ip6_hdr *);
2100 from6 = (struct sockaddr_in6 *)&from_store;
2101 bzero(from6, sizeof(*from6));
2102 from6->sin6_family = AF_INET6;
2103 from6->sin6_len = sizeof(struct sockaddr_in6);
2104 from6->sin6_addr = ip6->ip6_src;
2105 from6->sin6_port = sh->src_port;
2106 /* Get the scopes in properly to the sin6 addr's */
2107 /* we probably don't need these operations */
2108 (void)sa6_recoverscope(from6);
2109 sa6_embedscope(from6, MODULE_GLOBAL(ip6_use_defzone));
2114 /* Currently not supported. */
2119 switch (iph->ip_v) {
2123 struct sockaddr_in *to4;
2125 to4 = (struct sockaddr_in *)&to_store;
2126 bzero(to4, sizeof(*to4));
2127 to4->sin_family = AF_INET;
2128 to4->sin_len = sizeof(struct sockaddr_in);
2129 to4->sin_addr.s_addr = iph->ip_dst.s_addr;
2130 to4->sin_port = sh->dest_port;
2134 case IPV6_VERSION >> 4:
2137 struct ip6_hdr *ip6;
2138 struct sockaddr_in6 *to6;
2140 ip6 = mtod(m, struct ip6_hdr *);
2141 to6 = (struct sockaddr_in6 *)&to_store;
2142 bzero(to6, sizeof(*to6));
2143 to6->sin6_family = AF_INET6;
2144 to6->sin6_len = sizeof(struct sockaddr_in6);
2145 to6->sin6_addr = ip6->ip6_dst;
2146 to6->sin6_port = sh->dest_port;
2147 /* Get the scopes in properly to the sin6 addr's */
2148 /* we probably don't need these operations */
2149 (void)sa6_recoverscope(to6);
2150 sa6_embedscope(to6, MODULE_GLOBAL(ip6_use_defzone));
2159 /* we only go down this path if vtag is non-zero */
2160 retval = sctp_findassoc_by_vtag(from, to, ntohl(sh->v_tag),
2161 inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0);
2167 if ((ch->chunk_type != SCTP_INITIATION) &&
2168 (ch->chunk_type != SCTP_INITIATION_ACK) &&
2169 (ch->chunk_type != SCTP_COOKIE_ACK) &&
2170 (ch->chunk_type != SCTP_COOKIE_ECHO)) {
2171 /* Other chunk types go to the tcp pool. */
2175 retval = sctp_findassociation_addr_sa(to, from, inp_p, netp,
2176 find_tcp_pool, vrf_id);
2179 retval = sctp_findassociation_addr_sa(to, from, &inp, netp,
2180 find_tcp_pool, vrf_id);
2182 SCTPDBG(SCTP_DEBUG_PCB1, "retval:%p inp:%p\n", retval, inp);
2183 if (retval == NULL && inp) {
2184 /* Found a EP but not this address */
2185 if ((ch->chunk_type == SCTP_INITIATION) ||
2186 (ch->chunk_type == SCTP_INITIATION_ACK)) {
2188 * special hook, we do NOT return linp or an
2189 * association that is linked to an existing
2190 * association that is under the TCP pool (i.e. no
2191 * listener exists). The endpoint finding routine
2192 * will always find a listener before examining the
2195 if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
2201 retval = sctp_findassociation_special_addr(m, iphlen,
2202 offset, sh, &inp, netp, to);
2203 if (inp_p != NULL) {
2208 SCTPDBG(SCTP_DEBUG_PCB1, "retval is %p\n", retval);
2213 * lookup an association by an ASCONF lookup address.
2214 * if the lookup address is 0.0.0.0 or ::0, use the vtag to do the lookup
2217 sctp_findassociation_ep_asconf(struct mbuf *m, int iphlen, int offset,
2218 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2220 struct sctp_tcb *stcb;
2221 struct sockaddr_in *sin;
2224 struct sockaddr_in6 *sin6;
2227 struct sockaddr_storage local_store, remote_store;
2228 struct sockaddr *to;
2232 struct ip6_hdr *ip6;
2235 struct sctp_paramhdr parm_buf, *phdr;
2237 int zero_address = 0;
2240 memset(&local_store, 0, sizeof(local_store));
2241 memset(&remote_store, 0, sizeof(remote_store));
2242 to = (struct sockaddr *)&local_store;
2243 /* First get the destination address setup too. */
2244 iph = mtod(m, struct ip *);
2245 switch (iph->ip_v) {
2248 sin = (struct sockaddr_in *)&local_store;
2249 sin->sin_family = AF_INET;
2250 sin->sin_len = sizeof(*sin);
2251 sin->sin_port = sh->dest_port;
2252 sin->sin_addr.s_addr = iph->ip_dst.s_addr;
2255 case IPV6_VERSION >> 4:
2257 ip6 = mtod(m, struct ip6_hdr *);
2258 sin6 = (struct sockaddr_in6 *)&local_store;
2259 sin6->sin6_family = AF_INET6;
2260 sin6->sin6_len = sizeof(*sin6);
2261 sin6->sin6_port = sh->dest_port;
2262 sin6->sin6_addr = ip6->ip6_dst;
2269 phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk),
2270 &parm_buf, sizeof(struct sctp_paramhdr));
2272 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n",
2276 ptype = (int)((uint32_t) ntohs(phdr->param_type));
2277 /* get the correlation address */
2280 case SCTP_IPV6_ADDRESS:
2282 /* ipv6 address param */
2283 struct sctp_ipv6addr_param *p6, p6_buf;
2285 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) {
2288 p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m,
2289 offset + sizeof(struct sctp_asconf_chunk),
2290 &p6_buf.ph, sizeof(*p6));
2292 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n",
2296 sin6 = (struct sockaddr_in6 *)&remote_store;
2297 sin6->sin6_family = AF_INET6;
2298 sin6->sin6_len = sizeof(*sin6);
2299 sin6->sin6_port = sh->src_port;
2300 memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr));
2301 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
2306 case SCTP_IPV4_ADDRESS:
2308 /* ipv4 address param */
2309 struct sctp_ipv4addr_param *p4, p4_buf;
2311 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) {
2314 p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m,
2315 offset + sizeof(struct sctp_asconf_chunk),
2316 &p4_buf.ph, sizeof(*p4));
2318 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n",
2322 sin = (struct sockaddr_in *)&remote_store;
2323 sin->sin_family = AF_INET;
2324 sin->sin_len = sizeof(*sin);
2325 sin->sin_port = sh->src_port;
2326 memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr));
2327 if (sin->sin_addr.s_addr == INADDR_ANY)
2332 /* invalid address param type */
2337 stcb = sctp_findassoc_by_vtag(NULL, to, ntohl(sh->v_tag), inp_p,
2338 netp, sh->src_port, sh->dest_port, 1, vrf_id, 0);
2340 * printf("findassociation_ep_asconf: zero lookup address
2341 * finds stcb 0x%x\n", (uint32_t)stcb);
2344 stcb = sctp_findassociation_ep_addr(inp_p,
2345 (struct sockaddr *)&remote_store, netp,
2353 * allocate a sctp_inpcb and setup a temporary binding to a port/all
2354 * addresses. This way if we don't get a bind we by default pick a ephemeral
2355 * port with all addresses bound.
2358 sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
2361 * we get called when a new endpoint starts up. We need to allocate
2362 * the sctp_inpcb structure from the zone and init it. Mark it as
2363 * unbound and find a port that we can use as an ephemeral with
2364 * INADDR_ANY. If the user binds later no problem we can then add in
2365 * the specific addresses. And setup the default parameters for the
2369 struct sctp_inpcb *inp;
2371 struct timeval time;
2372 sctp_sharedkey_t *null_key;
2376 SCTP_INP_INFO_WLOCK();
2377 inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb);
2379 SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n");
2380 SCTP_INP_INFO_WUNLOCK();
2381 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2385 bzero(inp, sizeof(*inp));
2387 /* bump generations */
2388 /* setup socket pointers */
2389 inp->sctp_socket = so;
2390 inp->ip_inp.inp.inp_socket = so;
2391 inp->sctp_associd_counter = 1;
2392 inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT;
2393 inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
2394 inp->sctp_cmt_on_off = SCTP_BASE_SYSCTL(sctp_cmt_on_off);
2395 /* init the small hash table we use to track asocid <-> tcb */
2396 inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark);
2397 if (inp->sctp_asocidhash == NULL) {
2398 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2399 SCTP_INP_INFO_WUNLOCK();
2404 struct inpcbpolicy *pcb_sp = NULL;
2406 error = ipsec_init_policy(so, &pcb_sp);
2407 /* Arrange to share the policy */
2408 inp->ip_inp.inp.inp_sp = pcb_sp;
2409 ((struct in6pcb *)(&inp->ip_inp.inp))->in6p_sp = pcb_sp;
2412 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2413 SCTP_INP_INFO_WUNLOCK();
2417 SCTP_INCR_EP_COUNT();
2418 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
2419 SCTP_INP_INFO_WUNLOCK();
2421 so->so_pcb = (caddr_t)inp;
2423 if ((SCTP_SO_TYPE(so) == SOCK_DGRAM) ||
2424 (SCTP_SO_TYPE(so) == SOCK_SEQPACKET)) {
2425 /* UDP style socket */
2426 inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
2427 SCTP_PCB_FLAGS_UNBOUND);
2428 /* Be sure it is NON-BLOCKING IO for UDP */
2429 /* SCTP_SET_SO_NBIO(so); */
2430 } else if (SCTP_SO_TYPE(so) == SOCK_STREAM) {
2431 /* TCP style socket */
2432 inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
2433 SCTP_PCB_FLAGS_UNBOUND);
2434 /* Be sure we have blocking IO by default */
2435 SCTP_CLEAR_SO_NBIO(so);
2438 * unsupported socket type (RAW, etc)- in case we missed it
2441 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
2443 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2444 return (EOPNOTSUPP);
2446 if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) {
2447 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2448 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2449 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) {
2450 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2451 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2452 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) {
2453 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2454 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2456 inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize),
2457 &inp->sctp_hashmark);
2458 if (inp->sctp_tcbhash == NULL) {
2459 SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
2460 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2462 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2465 inp->def_vrf_id = vrf_id;
2467 SCTP_INP_INFO_WLOCK();
2468 SCTP_INP_LOCK_INIT(inp);
2469 INP_LOCK_INIT(&inp->ip_inp.inp, "inp", "sctpinp");
2470 SCTP_INP_READ_INIT(inp);
2471 SCTP_ASOC_CREATE_LOCK_INIT(inp);
2472 /* lock the new ep */
2473 SCTP_INP_WLOCK(inp);
2475 /* add it to the info area */
2476 LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list);
2477 SCTP_INP_INFO_WUNLOCK();
2479 TAILQ_INIT(&inp->read_queue);
2480 LIST_INIT(&inp->sctp_addr_list);
2482 LIST_INIT(&inp->sctp_asoc_list);
2484 #ifdef SCTP_TRACK_FREED_ASOCS
2486 LIST_INIT(&inp->sctp_asoc_free_list);
2488 /* Init the timer structure for signature change */
2489 SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer);
2490 inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE;
2492 /* now init the actual endpoint default data */
2495 /* setup the base timeout information */
2496 m->sctp_timeoutticks[SCTP_TIMER_SEND] = SEC_TO_TICKS(SCTP_SEND_SEC); /* needed ? */
2497 m->sctp_timeoutticks[SCTP_TIMER_INIT] = SEC_TO_TICKS(SCTP_INIT_SEC); /* needed ? */
2498 m->sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default));
2499 m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default));
2500 m->sctp_timeoutticks[SCTP_TIMER_PMTU] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default));
2501 m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default));
2502 m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default));
2503 /* all max/min max are in ms */
2504 m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default);
2505 m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default);
2506 m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default);
2507 m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default);
2508 m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default);
2510 m->max_open_streams_intome = MAX_SCTP_STREAMS;
2512 m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default);
2513 m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default);
2514 m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default);
2515 m->sctp_sws_sender = SCTP_SWS_SENDER_DEF;
2516 m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF;
2517 m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default);
2518 if ((SCTP_BASE_SYSCTL(sctp_default_cc_module) >= SCTP_CC_RFC2581) &&
2519 (SCTP_BASE_SYSCTL(sctp_default_cc_module) <= SCTP_CC_HTCP)) {
2520 m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module);
2522 /* sysctl done with invalid value, set to 2581 */
2523 m->sctp_default_cc_module = SCTP_CC_RFC2581;
2525 /* number of streams to pre-open on a association */
2526 m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default);
2528 /* Add adaptation cookie */
2529 m->adaptation_layer_indicator = 0x504C5253;
2531 /* seed random number generator */
2532 m->random_counter = 1;
2533 m->store_at = SCTP_SIGNATURE_SIZE;
2534 SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers));
2535 sctp_fill_random_store(m);
2537 /* Minimum cookie size */
2538 m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) +
2539 sizeof(struct sctp_state_cookie);
2540 m->size_of_a_cookie += SCTP_SIGNATURE_SIZE;
2542 /* Setup the initial secret */
2543 (void)SCTP_GETTIME_TIMEVAL(&time);
2544 m->time_of_secret_change = time.tv_sec;
2546 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
2547 m->secret_key[0][i] = sctp_select_initial_TSN(m);
2549 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
2551 /* How long is a cookie good for ? */
2552 m->def_cookie_life = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default));
2554 * Initialize authentication parameters
2556 m->local_hmacs = sctp_default_supported_hmaclist();
2557 m->local_auth_chunks = sctp_alloc_chunklist();
2558 sctp_auth_set_default_chunks(m->local_auth_chunks);
2559 LIST_INIT(&m->shared_keys);
2560 /* add default NULL key as key id 0 */
2561 null_key = sctp_alloc_sharedkey();
2562 sctp_insert_sharedkey(&m->shared_keys, null_key);
2563 SCTP_INP_WUNLOCK(inp);
2564 #ifdef SCTP_LOG_CLOSING
2565 sctp_log_closing(inp, NULL, 12);
2572 sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp,
2573 struct sctp_tcb *stcb)
2575 struct sctp_nets *net;
2576 uint16_t lport, rport;
2577 struct sctppcbhead *head;
2578 struct sctp_laddr *laddr, *oladdr;
2580 atomic_add_int(&stcb->asoc.refcnt, 1);
2581 SCTP_TCB_UNLOCK(stcb);
2582 SCTP_INP_INFO_WLOCK();
2583 SCTP_INP_WLOCK(old_inp);
2584 SCTP_INP_WLOCK(new_inp);
2585 SCTP_TCB_LOCK(stcb);
2586 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2588 new_inp->sctp_ep.time_of_secret_change =
2589 old_inp->sctp_ep.time_of_secret_change;
2590 memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key,
2591 sizeof(old_inp->sctp_ep.secret_key));
2592 new_inp->sctp_ep.current_secret_number =
2593 old_inp->sctp_ep.current_secret_number;
2594 new_inp->sctp_ep.last_secret_number =
2595 old_inp->sctp_ep.last_secret_number;
2596 new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie;
2598 /* make it so new data pours into the new socket */
2599 stcb->sctp_socket = new_inp->sctp_socket;
2600 stcb->sctp_ep = new_inp;
2602 /* Copy the port across */
2603 lport = new_inp->sctp_lport = old_inp->sctp_lport;
2604 rport = stcb->rport;
2605 /* Pull the tcb from the old association */
2606 LIST_REMOVE(stcb, sctp_tcbhash);
2607 LIST_REMOVE(stcb, sctp_tcblist);
2608 if (stcb->asoc.in_asocid_hash) {
2609 LIST_REMOVE(stcb, sctp_tcbasocidhash);
2611 /* Now insert the new_inp into the TCP connected hash */
2612 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
2614 LIST_INSERT_HEAD(head, new_inp, sctp_hash);
2615 /* Its safe to access */
2616 new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
2618 /* Now move the tcb into the endpoint list */
2619 LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist);
2621 * Question, do we even need to worry about the ep-hash since we
2622 * only have one connection? Probably not :> so lets get rid of it
2623 * and not suck up any kernel memory in that.
2625 if (stcb->asoc.in_asocid_hash) {
2626 struct sctpasochead *lhd;
2628 lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id,
2629 new_inp->hashasocidmark)];
2630 LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash);
2632 /* Ok. Let's restart timer. */
2633 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2634 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp,
2638 SCTP_INP_INFO_WUNLOCK();
2639 if (new_inp->sctp_tcbhash != NULL) {
2640 SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark);
2641 new_inp->sctp_tcbhash = NULL;
2643 if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2644 /* Subset bound, so copy in the laddr list from the old_inp */
2645 LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) {
2646 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2647 if (laddr == NULL) {
2649 * Gak, what can we do? This assoc is really
2650 * HOSED. We probably should send an abort
2653 SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n");
2656 SCTP_INCR_LADDR_COUNT();
2657 bzero(laddr, sizeof(*laddr));
2658 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2659 laddr->ifa = oladdr->ifa;
2660 atomic_add_int(&laddr->ifa->refcount, 1);
2661 LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr,
2663 new_inp->laddr_count++;
2667 * Now any running timers need to be adjusted since we really don't
2668 * care if they are running or not just blast in the new_inp into
2672 stcb->asoc.hb_timer.ep = (void *)new_inp;
2673 stcb->asoc.dack_timer.ep = (void *)new_inp;
2674 stcb->asoc.asconf_timer.ep = (void *)new_inp;
2675 stcb->asoc.strreset_timer.ep = (void *)new_inp;
2676 stcb->asoc.shut_guard_timer.ep = (void *)new_inp;
2677 stcb->asoc.autoclose_timer.ep = (void *)new_inp;
2678 stcb->asoc.delayed_event_timer.ep = (void *)new_inp;
2679 stcb->asoc.delete_prim_timer.ep = (void *)new_inp;
2680 /* now what about the nets? */
2681 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2682 net->pmtu_timer.ep = (void *)new_inp;
2683 net->rxt_timer.ep = (void *)new_inp;
2684 net->fr_timer.ep = (void *)new_inp;
2686 SCTP_INP_WUNLOCK(new_inp);
2687 SCTP_INP_WUNLOCK(old_inp);
2693 /* sctp_ifap is used to bypass normal local address validation checks */
2695 sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
2696 struct sctp_ifa *sctp_ifap, struct thread *p)
2698 /* bind a ep to a socket address */
2699 struct sctppcbhead *head;
2700 struct sctp_inpcb *inp, *inp_tmp;
2701 struct inpcb *ip_inp;
2702 int port_reuse_active = 0;
2711 inp = (struct sctp_inpcb *)so->so_pcb;
2712 ip_inp = (struct inpcb *)so->so_pcb;
2715 SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port:%d\n",
2716 ntohs(((struct sockaddr_in *)addr)->sin_port));
2717 SCTPDBG(SCTP_DEBUG_PCB1, "Addr :");
2718 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
2721 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2722 /* already did a bind, subsequent binds NOT allowed ! */
2723 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2728 panic("null proc/thread");
2731 switch (addr->sa_family) {
2734 struct sockaddr_in *sin;
2736 /* IPV6_V6ONLY socket? */
2737 if (SCTP_IPV6_V6ONLY(ip_inp)) {
2738 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2741 if (addr->sa_len != sizeof(*sin)) {
2742 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2745 sin = (struct sockaddr_in *)addr;
2746 lport = sin->sin_port;
2748 * For LOOPBACK the prison_local_ip4() call
2749 * will transmute the ip address to the
2752 if (p && (error = prison_local_ip4(p->td_ucred, &sin->sin_addr)) != 0) {
2753 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2756 if (sin->sin_addr.s_addr != INADDR_ANY) {
2765 * Only for pure IPv6 Address. (No IPv4
2768 struct sockaddr_in6 *sin6;
2770 sin6 = (struct sockaddr_in6 *)addr;
2772 if (addr->sa_len != sizeof(*sin6)) {
2773 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2776 lport = sin6->sin6_port;
2779 * For LOOPBACK the prison_local_ip6() call
2780 * will transmute the ipv6 address to the
2783 if (p && (error = prison_local_ip6(p->td_ucred, &sin6->sin6_addr,
2784 (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
2785 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2788 if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2790 /* KAME hack: embed scopeid */
2791 if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
2792 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2796 /* this must be cleared for ifa_ifwithaddr() */
2797 sin6->sin6_scope_id = 0;
2802 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EAFNOSUPPORT);
2803 return (EAFNOSUPPORT);
2806 SCTP_INP_INFO_WLOCK();
2807 SCTP_INP_WLOCK(inp);
2808 /* Setup a vrf_id to be the default for the non-bind-all case. */
2809 vrf_id = inp->def_vrf_id;
2811 /* increase our count due to the unlock we do */
2812 SCTP_INP_INCR_REF(inp);
2815 * Did the caller specify a port? if so we must see if a ep
2816 * already has this one bound.
2818 /* got to be root to get at low ports */
2819 if (ntohs(lport) < IPPORT_RESERVED) {
2821 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2823 SCTP_INP_DECR_REF(inp);
2824 SCTP_INP_WUNLOCK(inp);
2825 SCTP_INP_INFO_WUNLOCK();
2830 SCTP_INP_DECR_REF(inp);
2831 SCTP_INP_WUNLOCK(inp);
2832 SCTP_INP_INFO_WUNLOCK();
2833 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2836 SCTP_INP_WUNLOCK(inp);
2838 vrf_id = inp->def_vrf_id;
2839 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2840 if (inp_tmp != NULL) {
2842 * lock guy returned and lower count note
2843 * that we are not bound so inp_tmp should
2844 * NEVER be inp. And it is this inp
2845 * (inp_tmp) that gets the reference bump,
2846 * so we must lower it.
2848 SCTP_INP_DECR_REF(inp_tmp);
2850 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2851 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2853 * Ok, must be one-2-one and
2854 * allowing port re-use
2856 port_reuse_active = 1;
2857 goto continue_anyway;
2859 SCTP_INP_DECR_REF(inp);
2860 SCTP_INP_INFO_WUNLOCK();
2861 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2862 return (EADDRINUSE);
2865 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2866 if (inp_tmp != NULL) {
2868 * lock guy returned and lower count note
2869 * that we are not bound so inp_tmp should
2870 * NEVER be inp. And it is this inp
2871 * (inp_tmp) that gets the reference bump,
2872 * so we must lower it.
2874 SCTP_INP_DECR_REF(inp_tmp);
2876 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2877 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2879 * Ok, must be one-2-one and
2880 * allowing port re-use
2882 port_reuse_active = 1;
2883 goto continue_anyway;
2885 SCTP_INP_DECR_REF(inp);
2886 SCTP_INP_INFO_WUNLOCK();
2887 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2888 return (EADDRINUSE);
2892 SCTP_INP_WLOCK(inp);
2894 /* verify that no lport is not used by a singleton */
2895 if ((port_reuse_active == 0) &&
2896 (inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))
2898 /* Sorry someone already has this one bound */
2899 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2900 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2901 port_reuse_active = 1;
2903 SCTP_INP_DECR_REF(inp);
2904 SCTP_INP_WUNLOCK(inp);
2905 SCTP_INP_INFO_WUNLOCK();
2906 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2907 return (EADDRINUSE);
2912 uint16_t first, last, candidate;
2916 if (ip_inp->inp_flags & INP_HIGHPORT) {
2917 first = MODULE_GLOBAL(ipport_hifirstauto);
2918 last = MODULE_GLOBAL(ipport_hilastauto);
2919 } else if (ip_inp->inp_flags & INP_LOWPORT) {
2921 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2923 SCTP_INP_DECR_REF(inp);
2924 SCTP_INP_WUNLOCK(inp);
2925 SCTP_INP_INFO_WUNLOCK();
2926 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2929 first = MODULE_GLOBAL(ipport_lowfirstauto);
2930 last = MODULE_GLOBAL(ipport_lowlastauto);
2932 first = MODULE_GLOBAL(ipport_firstauto);
2933 last = MODULE_GLOBAL(ipport_lastauto);
2942 count = last - first + 1; /* number of candidates */
2943 candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count);
2947 if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) {
2952 SCTP_INP_DECR_REF(inp);
2953 SCTP_INP_WUNLOCK(inp);
2954 SCTP_INP_INFO_WUNLOCK();
2955 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2956 return (EADDRINUSE);
2958 if (candidate == last)
2961 candidate = candidate + 1;
2964 lport = htons(candidate);
2966 SCTP_INP_DECR_REF(inp);
2967 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE |
2968 SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
2970 * this really should not happen. The guy did a non-blocking
2971 * bind and then did a close at the same time.
2973 SCTP_INP_WUNLOCK(inp);
2974 SCTP_INP_INFO_WUNLOCK();
2975 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2978 /* ok we look clear to give out this port, so lets setup the binding */
2980 /* binding to all addresses, so just set in the proper flags */
2981 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL;
2982 /* set the automatic addr changes from kernel flag */
2983 if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) {
2984 sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
2985 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
2987 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
2988 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
2990 if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) {
2991 sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
2993 sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
2996 * set the automatic mobility_base from kernel flag (by
2999 if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) {
3000 sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE);
3001 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3003 sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE);
3004 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3007 * set the automatic mobility_fasthandoff from kernel flag
3010 if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) {
3011 sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF);
3012 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3014 sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF);
3015 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3019 * bind specific, make sure flags is off and add a new
3020 * address structure to the sctp_addr_list inside the ep
3023 * We will need to allocate one and insert it at the head. The
3024 * socketopt call can just insert new addresses in there as
3025 * well. It will also have to do the embed scope kame hack
3026 * too (before adding).
3028 struct sctp_ifa *ifa;
3029 struct sockaddr_storage store_sa;
3031 memset(&store_sa, 0, sizeof(store_sa));
3032 if (addr->sa_family == AF_INET) {
3033 struct sockaddr_in *sin;
3035 sin = (struct sockaddr_in *)&store_sa;
3036 memcpy(sin, addr, sizeof(struct sockaddr_in));
3038 } else if (addr->sa_family == AF_INET6) {
3039 struct sockaddr_in6 *sin6;
3041 sin6 = (struct sockaddr_in6 *)&store_sa;
3042 memcpy(sin6, addr, sizeof(struct sockaddr_in6));
3043 sin6->sin6_port = 0;
3046 * first find the interface with the bound address need to
3047 * zero out the port to find the address! yuck! can't do
3048 * this earlier since need port for sctp_pcb_findep()
3050 if (sctp_ifap != NULL)
3054 * Note for BSD we hit here always other O/S's will
3055 * pass things in via the sctp_ifap argument
3058 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&store_sa,
3059 vrf_id, SCTP_ADDR_NOT_LOCKED);
3062 /* Can't find an interface with that address */
3063 SCTP_INP_WUNLOCK(inp);
3064 SCTP_INP_INFO_WUNLOCK();
3065 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRNOTAVAIL);
3066 return (EADDRNOTAVAIL);
3068 if (addr->sa_family == AF_INET6) {
3069 /* GAK, more FIXME IFA lock? */
3070 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
3071 /* Can't bind a non-existent addr. */
3072 SCTP_INP_WUNLOCK(inp);
3073 SCTP_INP_INFO_WUNLOCK();
3074 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3078 /* we're not bound all */
3079 inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL;
3080 /* allow bindx() to send ASCONF's for binding changes */
3081 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3082 /* clear automatic addr changes from kernel flag */
3083 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3085 /* add this address to the endpoint list */
3086 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0);
3088 SCTP_INP_WUNLOCK(inp);
3089 SCTP_INP_INFO_WUNLOCK();
3094 /* find the bucket */
3095 if (port_reuse_active) {
3096 /* Put it into tcp 1-2-1 hash */
3097 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))];
3098 inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
3100 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))];
3102 /* put it in the bucket */
3103 LIST_INSERT_HEAD(head, inp, sctp_hash);
3104 SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n",
3105 head, ntohs(lport), port_reuse_active);
3106 /* set in the port */
3107 inp->sctp_lport = lport;
3109 /* turn off just the unbound flag */
3110 inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
3111 SCTP_INP_WUNLOCK(inp);
3112 SCTP_INP_INFO_WUNLOCK();
3118 sctp_iterator_inp_being_freed(struct sctp_inpcb *inp)
3120 struct sctp_iterator *it, *nit;
3123 * We enter with the only the ITERATOR_LOCK in place and a write
3124 * lock on the inp_info stuff.
3126 it = sctp_it_ctl.cur_it;
3127 if (it && (it->vn != curvnet)) {
3128 /* Its not looking at our VNET */
3131 if (it && (it->inp == inp)) {
3133 * This is tricky and we hold the iterator lock, but when it
3134 * returns and gets the lock (when we release it) the
3135 * iterator will try to operate on inp. We need to stop that
3136 * from happening. But of course the iterator has a
3137 * reference on the stcb and inp. We can mark it and it will
3140 * If its a single iterator situation, we set the end iterator
3141 * flag. Otherwise we set the iterator to go to the next
3145 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3146 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
3148 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_INP;
3152 * Now go through and remove any single reference to our inp that
3153 * may be still pending on the list
3155 SCTP_IPI_ITERATOR_WQ_LOCK();
3156 it = TAILQ_FIRST(&sctp_it_ctl.iteratorhead);
3158 nit = TAILQ_NEXT(it, sctp_nxt_itr);
3159 if (it->vn != curvnet) {
3163 if (it->inp == inp) {
3164 /* This one points to me is it inp specific? */
3165 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3166 /* Remove and free this one */
3167 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
3169 if (it->function_atend != NULL) {
3170 (*it->function_atend) (it->pointer, it->val);
3172 SCTP_FREE(it, SCTP_M_ITER);
3174 it->inp = LIST_NEXT(it->inp, sctp_list);
3176 SCTP_INP_INCR_REF(it->inp);
3180 * When its put in the refcnt is incremented so decr
3183 SCTP_INP_DECR_REF(inp);
3187 SCTP_IPI_ITERATOR_WQ_UNLOCK();
3190 /* release sctp_inpcb unbind the port */
3192 sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
3195 * Here we free a endpoint. We must find it (if it is in the Hash
3196 * table) and remove it from there. Then we must also find it in the
3197 * overall list and remove it from there. After all removals are
3198 * complete then any timer has to be stopped. Then start the actual
3199 * freeing. a) Any local lists. b) Any associations. c) The hash of
3200 * all associations. d) finally the ep itself.
3203 struct sctp_tcb *asoc, *nasoc;
3204 struct sctp_laddr *laddr, *nladdr;
3205 struct inpcb *ip_pcb;
3207 int being_refed = 0;
3208 struct sctp_queued_to_read *sq;
3212 sctp_sharedkey_t *shared_key;
3215 #ifdef SCTP_LOG_CLOSING
3216 sctp_log_closing(inp, NULL, 0);
3218 SCTP_ITERATOR_LOCK();
3219 /* mark any iterators on the list or being processed */
3220 sctp_iterator_inp_being_freed(inp);
3221 SCTP_ITERATOR_UNLOCK();
3222 so = inp->sctp_socket;
3223 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
3224 /* been here before.. eeks.. get out of here */
3225 SCTP_PRINTF("This conflict in free SHOULD not be happening! from %d, imm %d\n", from, immediate);
3226 #ifdef SCTP_LOG_CLOSING
3227 sctp_log_closing(inp, NULL, 1);
3231 SCTP_ASOC_CREATE_LOCK(inp);
3232 SCTP_INP_INFO_WLOCK();
3234 SCTP_INP_WLOCK(inp);
3235 if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
3236 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP;
3237 /* socket is gone, so no more wakeups allowed */
3238 inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE;
3239 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
3240 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
3243 /* First time through we have the socket lock, after that no more. */
3244 sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL,
3245 SCTP_FROM_SCTP_PCB + SCTP_LOC_1);
3248 sctp_m_freem(inp->control);
3249 inp->control = NULL;
3252 sctp_m_freem(inp->pkt);
3256 ip_pcb = &inp->ip_inp.inp; /* we could just cast the main pointer
3257 * here but I will be nice :> (i.e.
3259 if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
3263 for ((asoc = LIST_FIRST(&inp->sctp_asoc_list)); asoc != NULL;
3265 SCTP_TCB_LOCK(asoc);
3266 nasoc = LIST_NEXT(asoc, sctp_tcblist);
3267 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3268 /* Skip guys being freed */
3270 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3272 * Special case - we did not start a
3273 * kill timer on the asoc due to it
3274 * was not closed. So go ahead and
3277 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3278 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3280 SCTP_TCB_UNLOCK(asoc);
3283 if (((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_WAIT) ||
3284 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_ECHOED)) &&
3285 (asoc->asoc.total_output_queue_size == 0)) {
3287 * If we have data in queue, we don't want
3288 * to just free since the app may have done,
3289 * send()/close or connect/send/close. And
3290 * it wants the data to get across first.
3292 /* Just abandon things in the front states */
3293 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE,
3294 SCTP_FROM_SCTP_PCB + SCTP_LOC_2) == 0) {
3299 /* Disconnect the socket please */
3300 asoc->sctp_socket = NULL;
3301 asoc->asoc.state |= SCTP_STATE_CLOSED_SOCKET;
3302 if ((asoc->asoc.size_on_reasm_queue > 0) ||
3303 (asoc->asoc.control_pdapi) ||
3304 (asoc->asoc.size_on_all_streams > 0) ||
3305 (so && (so->so_rcv.sb_cc > 0))
3307 /* Left with Data unread */
3308 struct mbuf *op_err;
3310 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3311 0, M_DONTWAIT, 1, MT_DATA);
3313 /* Fill in the user initiated abort */
3314 struct sctp_paramhdr *ph;
3317 SCTP_BUF_LEN(op_err) =
3318 sizeof(struct sctp_paramhdr) + sizeof(uint32_t);
3320 struct sctp_paramhdr *);
3321 ph->param_type = htons(
3322 SCTP_CAUSE_USER_INITIATED_ABT);
3323 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3324 ippp = (uint32_t *) (ph + 1);
3325 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_3);
3327 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_3;
3328 #if defined(SCTP_PANIC_ON_ABORT)
3329 panic("inpcb_free does an abort");
3331 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3332 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3333 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3334 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3335 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3337 if (sctp_free_assoc(inp, asoc,
3338 SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_4) == 0) {
3342 } else if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3343 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3344 (asoc->asoc.stream_queue_cnt == 0)
3346 if (asoc->asoc.locked_on_sending) {
3349 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
3350 (SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
3352 * there is nothing queued to send,
3353 * so I send shutdown
3355 sctp_send_shutdown(asoc, asoc->asoc.primary_destination);
3356 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3357 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3358 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3360 SCTP_SET_STATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_SENT);
3361 SCTP_CLEAR_SUBSTATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_PENDING);
3362 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, asoc->sctp_ep, asoc,
3363 asoc->asoc.primary_destination);
3364 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3365 asoc->asoc.primary_destination);
3366 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED);
3369 /* mark into shutdown pending */
3370 struct sctp_stream_queue_pending *sp;
3372 asoc->asoc.state |= SCTP_STATE_SHUTDOWN_PENDING;
3373 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3374 asoc->asoc.primary_destination);
3375 if (asoc->asoc.locked_on_sending) {
3376 sp = TAILQ_LAST(&((asoc->asoc.locked_on_sending)->outqueue),
3379 SCTP_PRINTF("Error, sp is NULL, locked on sending is %p strm:%d\n",
3380 asoc->asoc.locked_on_sending,
3381 asoc->asoc.locked_on_sending->stream_no);
3383 if ((sp->length == 0) && (sp->msg_is_complete == 0))
3384 asoc->asoc.state |= SCTP_STATE_PARTIAL_MSG_LEFT;
3387 if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3388 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3389 (asoc->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
3390 struct mbuf *op_err;
3393 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3394 0, M_DONTWAIT, 1, MT_DATA);
3400 struct sctp_paramhdr *ph;
3403 SCTP_BUF_LEN(op_err) =
3404 (sizeof(struct sctp_paramhdr) +
3407 struct sctp_paramhdr *);
3408 ph->param_type = htons(
3409 SCTP_CAUSE_USER_INITIATED_ABT);
3410 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3411 ippp = (uint32_t *) (ph + 1);
3412 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_5);
3414 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_5;
3415 #if defined(SCTP_PANIC_ON_ABORT)
3416 panic("inpcb_free does an abort");
3419 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3420 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3421 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3422 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3423 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3425 if (sctp_free_assoc(inp, asoc,
3426 SCTP_PCBFREE_NOFORCE,
3427 SCTP_FROM_SCTP_PCB + SCTP_LOC_6) == 0) {
3432 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
3436 SCTP_TCB_UNLOCK(asoc);
3438 /* now is there some left in our SHUTDOWN state? */
3440 #ifdef SCTP_LOG_CLOSING
3441 sctp_log_closing(inp, NULL, 2);
3443 inp->sctp_socket = NULL;
3444 SCTP_INP_WUNLOCK(inp);
3445 SCTP_ASOC_CREATE_UNLOCK(inp);
3446 SCTP_INP_INFO_WUNLOCK();
3450 inp->sctp_socket = NULL;
3451 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) !=
3452 SCTP_PCB_FLAGS_UNBOUND) {
3454 * ok, this guy has been bound. It's port is somewhere in
3455 * the SCTP_BASE_INFO(hash table). Remove it!
3457 LIST_REMOVE(inp, sctp_hash);
3458 inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND;
3461 * If there is a timer running to kill us, forget it, since it may
3462 * have a contest on the INP lock.. which would cause us to die ...
3465 for ((asoc = LIST_FIRST(&inp->sctp_asoc_list)); asoc != NULL;
3467 SCTP_TCB_LOCK(asoc);
3468 nasoc = LIST_NEXT(asoc, sctp_tcblist);
3469 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3470 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3471 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3472 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3475 SCTP_TCB_UNLOCK(asoc);
3478 /* Free associations that are NOT killing us */
3479 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_COOKIE_WAIT) &&
3480 ((asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) {
3481 struct mbuf *op_err;
3484 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3485 0, M_DONTWAIT, 1, MT_DATA);
3487 /* Fill in the user initiated abort */
3488 struct sctp_paramhdr *ph;
3490 SCTP_BUF_LEN(op_err) = (sizeof(struct sctp_paramhdr) +
3492 ph = mtod(op_err, struct sctp_paramhdr *);
3493 ph->param_type = htons(
3494 SCTP_CAUSE_USER_INITIATED_ABT);
3495 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3496 ippp = (uint32_t *) (ph + 1);
3497 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_7);
3500 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_7;
3501 #if defined(SCTP_PANIC_ON_ABORT)
3502 panic("inpcb_free does an abort");
3504 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3505 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3506 } else if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3508 SCTP_TCB_UNLOCK(asoc);
3511 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3512 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3513 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3515 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_8) == 0) {
3520 /* Ok we have someone out there that will kill us */
3521 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3522 #ifdef SCTP_LOG_CLOSING
3523 sctp_log_closing(inp, NULL, 3);
3525 SCTP_INP_WUNLOCK(inp);
3526 SCTP_ASOC_CREATE_UNLOCK(inp);
3527 SCTP_INP_INFO_WUNLOCK();
3530 if (SCTP_INP_LOCK_CONTENDED(inp))
3532 if (SCTP_INP_READ_CONTENDED(inp))
3534 if (SCTP_ASOC_CREATE_LOCK_CONTENDED(inp))
3537 if ((inp->refcount) ||
3539 (inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) {
3540 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3541 #ifdef SCTP_LOG_CLOSING
3542 sctp_log_closing(inp, NULL, 4);
3544 sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
3545 SCTP_INP_WUNLOCK(inp);
3546 SCTP_ASOC_CREATE_UNLOCK(inp);
3547 SCTP_INP_INFO_WUNLOCK();
3550 inp->sctp_ep.signature_change.type = 0;
3551 inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE;
3553 * Remove it from the list .. last thing we need a lock for.
3555 LIST_REMOVE(inp, sctp_list);
3556 SCTP_INP_WUNLOCK(inp);
3557 SCTP_ASOC_CREATE_UNLOCK(inp);
3558 SCTP_INP_INFO_WUNLOCK();
3560 * Now we release all locks. Since this INP cannot be found anymore
3561 * except possibly by the kill timer that might be running. We call
3562 * the drain function here. It should hit the case were it sees the
3563 * ACTIVE flag cleared and exit out freeing us to proceed and
3564 * destroy everything.
3566 if (from != SCTP_CALLED_FROM_INPKILL_TIMER) {
3567 (void)SCTP_OS_TIMER_STOP_DRAIN(&inp->sctp_ep.signature_change.timer);
3569 /* Probably un-needed */
3570 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3573 #ifdef SCTP_LOG_CLOSING
3574 sctp_log_closing(inp, NULL, 5);
3578 if ((inp->sctp_asocidhash) != NULL) {
3579 SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark);
3580 inp->sctp_asocidhash = NULL;
3582 /* sa_ignore FREED_MEMORY */
3583 while ((sq = TAILQ_FIRST(&inp->read_queue)) != NULL) {
3584 /* Its only abandoned if it had data left */
3586 SCTP_STAT_INCR(sctps_left_abandon);
3588 TAILQ_REMOVE(&inp->read_queue, sq, next);
3589 sctp_free_remote_addr(sq->whoFrom);
3591 so->so_rcv.sb_cc -= sq->length;
3593 sctp_m_freem(sq->data);
3597 * no need to free the net count, since at this point all
3600 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
3601 SCTP_DECR_READQ_COUNT();
3603 /* Now the sctp_pcb things */
3605 * free each asoc if it is not already closed/free. we can't use the
3606 * macro here since le_next will get freed as part of the
3607 * sctp_free_assoc() call.
3612 ipsec_delete_pcbpolicy(ip_pcb);
3615 /* Unlocks not needed since the socket is gone now */
3617 if (ip_pcb->inp_options) {
3618 (void)sctp_m_free(ip_pcb->inp_options);
3619 ip_pcb->inp_options = 0;
3621 if (ip_pcb->inp_moptions) {
3622 inp_freemoptions(ip_pcb->inp_moptions);
3623 ip_pcb->inp_moptions = 0;
3626 if (ip_pcb->inp_vflag & INP_IPV6) {
3627 struct in6pcb *in6p;
3629 in6p = (struct in6pcb *)inp;
3630 ip6_freepcbopts(in6p->in6p_outputopts);
3633 ip_pcb->inp_vflag = 0;
3634 /* free up authentication fields */
3635 if (inp->sctp_ep.local_auth_chunks != NULL)
3636 sctp_free_chunklist(inp->sctp_ep.local_auth_chunks);
3637 if (inp->sctp_ep.local_hmacs != NULL)
3638 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3640 shared_key = LIST_FIRST(&inp->sctp_ep.shared_keys);
3641 while (shared_key) {
3642 LIST_REMOVE(shared_key, next);
3643 sctp_free_sharedkey(shared_key);
3644 /* sa_ignore FREED_MEMORY */
3645 shared_key = LIST_FIRST(&inp->sctp_ep.shared_keys);
3649 * if we have an address list the following will free the list of
3650 * ifaddr's that are set into this ep. Again macro limitations here,
3651 * since the LIST_FOREACH could be a bad idea.
3653 for ((laddr = LIST_FIRST(&inp->sctp_addr_list)); laddr != NULL;
3655 nladdr = LIST_NEXT(laddr, sctp_nxt_addr);
3656 sctp_remove_laddr(laddr);
3659 #ifdef SCTP_TRACK_FREED_ASOCS
3661 for ((asoc = LIST_FIRST(&inp->sctp_asoc_free_list)); asoc != NULL;
3663 nasoc = LIST_NEXT(asoc, sctp_tcblist);
3664 LIST_REMOVE(asoc, sctp_tcblist);
3665 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), asoc);
3666 SCTP_DECR_ASOC_COUNT();
3668 /* *** END TEMP CODE *** */
3670 /* Now lets see about freeing the EP hash table. */
3671 if (inp->sctp_tcbhash != NULL) {
3672 SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
3673 inp->sctp_tcbhash = NULL;
3675 /* Now we must put the ep memory back into the zone pool */
3676 INP_LOCK_DESTROY(&inp->ip_inp.inp);
3677 SCTP_INP_LOCK_DESTROY(inp);
3678 SCTP_INP_READ_DESTROY(inp);
3679 SCTP_ASOC_CREATE_LOCK_DESTROY(inp);
3680 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
3681 SCTP_DECR_EP_COUNT();
3686 sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
3688 struct sctp_nets *net;
3690 /* locate the address */
3691 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3692 if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr))
3700 sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
3702 struct sctp_ifa *sctp_ifa;
3704 sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED);
3713 * add's a remote endpoint address, done with the INIT/INIT-ACK as well as
3714 * when a ASCONF arrives that adds it. It will also initialize all the cwnd
3718 sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
3719 int set_scope, int from)
3722 * The following is redundant to the same lines in the
3723 * sctp_aloc_assoc() but is needed since others call the add address
3726 struct sctp_nets *net, *netfirst;
3729 SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ",
3731 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr);
3733 netfirst = sctp_findnet(stcb, newaddr);
3736 * Lie and return ok, we don't want to make the association
3737 * go away for this behavior. It will happen in the TCP
3738 * model in a connected socket. It does not reach the hash
3739 * table until after the association is built so it can't be
3740 * found. Mark as reachable, since the initial creation will
3741 * have been cleared and the NOT_IN_ASSOC flag will have
3742 * been added... and we don't want to end up removing it
3745 if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) {
3746 netfirst->dest_state = (SCTP_ADDR_REACHABLE |
3747 SCTP_ADDR_UNCONFIRMED);
3749 netfirst->dest_state = SCTP_ADDR_REACHABLE;
3755 if (newaddr->sa_family == AF_INET) {
3756 struct sockaddr_in *sin;
3758 sin = (struct sockaddr_in *)newaddr;
3759 if (sin->sin_addr.s_addr == 0) {
3760 /* Invalid address */
3763 /* zero out the bzero area */
3764 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
3766 /* assure len is set */
3767 sin->sin_len = sizeof(struct sockaddr_in);
3769 #ifdef SCTP_DONT_DO_PRIVADDR_SCOPE
3770 stcb->ipv4_local_scope = 1;
3772 if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
3773 stcb->asoc.ipv4_local_scope = 1;
3775 #endif /* SCTP_DONT_DO_PRIVADDR_SCOPE */
3777 /* Validate the address is in scope */
3778 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) &&
3779 (stcb->asoc.ipv4_local_scope == 0)) {
3784 } else if (newaddr->sa_family == AF_INET6) {
3785 struct sockaddr_in6 *sin6;
3787 sin6 = (struct sockaddr_in6 *)newaddr;
3788 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3789 /* Invalid address */
3792 /* assure len is set */
3793 sin6->sin6_len = sizeof(struct sockaddr_in6);
3795 if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) {
3796 stcb->asoc.loopback_scope = 1;
3797 stcb->asoc.local_scope = 0;
3798 stcb->asoc.ipv4_local_scope = 1;
3799 stcb->asoc.site_scope = 1;
3800 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
3802 * If the new destination is a LINK_LOCAL we
3803 * must have common site scope. Don't set
3804 * the local scope since we may not share
3805 * all links, only loopback can do this.
3806 * Links on the local network would also be
3807 * on our private network for v4 too.
3809 stcb->asoc.ipv4_local_scope = 1;
3810 stcb->asoc.site_scope = 1;
3811 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
3813 * If the new destination is SITE_LOCAL then
3814 * we must have site scope in common.
3816 stcb->asoc.site_scope = 1;
3819 /* Validate the address is in scope */
3820 if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) &&
3821 (stcb->asoc.loopback_scope == 0)) {
3823 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
3824 (stcb->asoc.local_scope == 0)) {
3826 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
3827 (stcb->asoc.site_scope == 0)) {
3833 /* not supported family type */
3836 net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets);
3840 SCTP_INCR_RADDR_COUNT();
3841 bzero(net, sizeof(*net));
3842 (void)SCTP_GETTIME_TIMEVAL(&net->start_time);
3843 memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len);
3844 if (newaddr->sa_family == AF_INET) {
3845 ((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport;
3846 } else if (newaddr->sa_family == AF_INET6) {
3847 ((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport;
3849 net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id);
3850 if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) {
3851 stcb->asoc.loopback_scope = 1;
3852 stcb->asoc.ipv4_local_scope = 1;
3853 stcb->asoc.local_scope = 0;
3854 stcb->asoc.site_scope = 1;
3857 net->failure_threshold = stcb->asoc.def_net_failure;
3858 if (addr_inscope == 0) {
3859 net->dest_state = (SCTP_ADDR_REACHABLE |
3860 SCTP_ADDR_OUT_OF_SCOPE);
3862 if (from == SCTP_ADDR_IS_CONFIRMED)
3863 /* SCTP_ADDR_IS_CONFIRMED is passed by connect_x */
3864 net->dest_state = SCTP_ADDR_REACHABLE;
3866 net->dest_state = SCTP_ADDR_REACHABLE |
3867 SCTP_ADDR_UNCONFIRMED;
3870 * We set this to 0, the timer code knows that this means its an
3874 net->RTO_measured = 0;
3875 stcb->asoc.numnets++;
3876 *(&net->ref_count) = 1;
3877 net->tos_flowlabel = 0;
3878 if (SCTP_BASE_SYSCTL(sctp_udp_tunneling_for_client_enable)) {
3879 net->port = htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port));
3884 if (newaddr->sa_family == AF_INET)
3885 net->tos_flowlabel = stcb->asoc.default_tos;
3888 if (newaddr->sa_family == AF_INET6)
3889 net->tos_flowlabel = stcb->asoc.default_flowlabel;
3891 /* Init the timer structure */
3892 SCTP_OS_TIMER_INIT(&net->rxt_timer.timer);
3893 SCTP_OS_TIMER_INIT(&net->fr_timer.timer);
3894 SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer);
3896 /* Now generate a route for this guy */
3898 /* KAME hack: embed scopeid */
3899 if (newaddr->sa_family == AF_INET6) {
3900 struct sockaddr_in6 *sin6;
3902 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3903 (void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone));
3904 sin6->sin6_scope_id = 0;
3907 SCTP_RTALLOC((sctp_route_t *) & net->ro, stcb->asoc.vrf_id);
3909 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) {
3910 /* Get source address */
3911 net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep,
3913 (sctp_route_t *) & net->ro,
3917 /* Now get the interface MTU */
3918 if (net->ro._s_addr && net->ro._s_addr->ifn_p) {
3919 net->mtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p);
3923 if (net->mtu == 0) {
3925 net->mtu = SCTP_DEFAULT_MTU;
3929 rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_rt);
3932 * Start things off to match mtu of
3935 SCTP_SET_MTU_OF_ROUTE(&net->ro._l_addr.sa,
3936 net->ro.ro_rt, net->mtu);
3939 * we take the route mtu over the interface,
3940 * since the route may be leading out the
3941 * loopback, or a different interface.
3946 if (from == SCTP_ALLOC_ASOC) {
3947 stcb->asoc.smallest_mtu = net->mtu;
3950 net->mtu = stcb->asoc.smallest_mtu;
3953 if (newaddr->sa_family == AF_INET6) {
3954 struct sockaddr_in6 *sin6;
3956 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3957 (void)sa6_recoverscope(sin6);
3961 net->mtu -= sizeof(struct udphdr);
3963 if (stcb->asoc.smallest_mtu > net->mtu) {
3964 stcb->asoc.smallest_mtu = net->mtu;
3966 /* JRS - Use the congestion control given in the CC module */
3967 stcb->asoc.cc_functions.sctp_set_initial_cc_param(stcb, net);
3970 * CMT: CUC algo - set find_pseudo_cumack to TRUE (1) at beginning
3971 * of assoc (2005/06/27, iyengar@cis.udel.edu)
3973 net->find_pseudo_cumack = 1;
3974 net->find_rtx_pseudo_cumack = 1;
3975 net->src_addr_selected = 0;
3976 netfirst = TAILQ_FIRST(&stcb->asoc.nets);
3977 if (net->ro.ro_rt == NULL) {
3978 /* Since we have no route put it at the back */
3979 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
3980 } else if (netfirst == NULL) {
3981 /* We are the first one in the pool. */
3982 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
3983 } else if (netfirst->ro.ro_rt == NULL) {
3985 * First one has NO route. Place this one ahead of the first
3988 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
3989 } else if (net->ro.ro_rt->rt_ifp != netfirst->ro.ro_rt->rt_ifp) {
3991 * This one has a different interface than the one at the
3992 * top of the list. Place it ahead.
3994 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
3997 * Ok we have the same interface as the first one. Move
3998 * forward until we find either a) one with a NULL route...
3999 * insert ahead of that b) one with a different ifp.. insert
4000 * after that. c) end of the list.. insert at the tail.
4002 struct sctp_nets *netlook;
4005 netlook = TAILQ_NEXT(netfirst, sctp_next);
4006 if (netlook == NULL) {
4007 /* End of the list */
4008 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4010 } else if (netlook->ro.ro_rt == NULL) {
4011 /* next one has NO route */
4012 TAILQ_INSERT_BEFORE(netfirst, net, sctp_next);
4014 } else if (netlook->ro.ro_rt->rt_ifp != net->ro.ro_rt->rt_ifp) {
4015 TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook,
4021 } while (netlook != NULL);
4024 /* got to have a primary set */
4025 if (stcb->asoc.primary_destination == 0) {
4026 stcb->asoc.primary_destination = net;
4027 } else if ((stcb->asoc.primary_destination->ro.ro_rt == NULL) &&
4029 ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
4030 /* No route to current primary adopt new primary */
4031 stcb->asoc.primary_destination = net;
4033 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, stcb->sctp_ep, stcb,
4035 /* Validate primary is first */
4036 net = TAILQ_FIRST(&stcb->asoc.nets);
4037 if ((net != stcb->asoc.primary_destination) &&
4038 (stcb->asoc.primary_destination)) {
4040 * first one on the list is NOT the primary sctp_cmpaddr()
4041 * is much more efficient if the primary is the first on the
4044 TAILQ_REMOVE(&stcb->asoc.nets,
4045 stcb->asoc.primary_destination, sctp_next);
4046 TAILQ_INSERT_HEAD(&stcb->asoc.nets,
4047 stcb->asoc.primary_destination, sctp_next);
4054 sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
4057 struct sctpasochead *head;
4058 struct sctp_tcb *lstcb;
4060 SCTP_INP_WLOCK(inp);
4062 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
4064 SCTP_INP_WUNLOCK(inp);
4068 * We don't allow assoc id to be 0, this is needed otherwise if the
4069 * id were to wrap we would have issues with some socket options.
4071 if (inp->sctp_associd_counter == 0) {
4072 inp->sctp_associd_counter++;
4074 id = inp->sctp_associd_counter;
4075 inp->sctp_associd_counter++;
4076 lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t) id, 0);
4080 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
4081 LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash);
4082 stcb->asoc.in_asocid_hash = 1;
4083 SCTP_INP_WUNLOCK(inp);
4088 * allocate an association and add it to the endpoint. The caller must be
4089 * careful to add all additional addresses once they are know right away or
4090 * else the assoc will be may experience a blackout scenario.
4093 sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
4094 int *error, uint32_t override_tag, uint32_t vrf_id,
4098 /* note the p argument is only valid in unbound sockets */
4100 struct sctp_tcb *stcb;
4101 struct sctp_association *asoc;
4102 struct sctpasochead *head;
4107 * Assumption made here: Caller has done a
4108 * sctp_findassociation_ep_addr(ep, addr's); to make sure the
4109 * address does not exist already.
4111 if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) {
4112 /* Hit max assoc, sorry no more */
4113 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4117 if (firstaddr == NULL) {
4118 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4122 SCTP_INP_RLOCK(inp);
4123 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
4124 ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) ||
4125 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4127 * If its in the TCP pool, its NOT allowed to create an
4128 * association. The parent listener needs to call
4129 * sctp_aloc_assoc.. or the one-2-many socket. If a peeled
4130 * off, or connected one does this.. its an error.
4132 SCTP_INP_RUNLOCK(inp);
4133 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4137 SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:");
4140 SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr);
4141 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4142 ntohs(((struct sockaddr_in *)firstaddr)->sin_port));
4144 SCTPDBG(SCTP_DEBUG_PCB3, "None\n");
4146 #endif /* SCTP_DEBUG */
4147 if (firstaddr->sa_family == AF_INET) {
4148 struct sockaddr_in *sin;
4150 sin = (struct sockaddr_in *)firstaddr;
4151 if ((sin->sin_port == 0) || (sin->sin_addr.s_addr == 0)) {
4152 /* Invalid address */
4153 SCTP_INP_RUNLOCK(inp);
4154 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4158 rport = sin->sin_port;
4159 } else if (firstaddr->sa_family == AF_INET6) {
4160 struct sockaddr_in6 *sin6;
4162 sin6 = (struct sockaddr_in6 *)firstaddr;
4163 if ((sin6->sin6_port == 0) ||
4164 (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))) {
4165 /* Invalid address */
4166 SCTP_INP_RUNLOCK(inp);
4167 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4171 rport = sin6->sin6_port;
4173 /* not supported family type */
4174 SCTP_INP_RUNLOCK(inp);
4175 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4179 SCTP_INP_RUNLOCK(inp);
4180 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4182 * If you have not performed a bind, then we need to do the
4183 * ephemeral bind for you.
4185 if ((err = sctp_inpcb_bind(inp->sctp_socket,
4186 (struct sockaddr *)NULL,
4187 (struct sctp_ifa *)NULL,
4190 /* bind error, probably perm */
4195 stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb);
4197 /* out of memory? */
4198 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
4202 SCTP_INCR_ASOC_COUNT();
4204 bzero(stcb, sizeof(*stcb));
4207 asoc->assoc_id = sctp_aloc_a_assoc_id(inp, stcb);
4208 SCTP_TCB_LOCK_INIT(stcb);
4209 SCTP_TCB_SEND_LOCK_INIT(stcb);
4210 stcb->rport = rport;
4211 /* setup back pointer's */
4212 stcb->sctp_ep = inp;
4213 stcb->sctp_socket = inp->sctp_socket;
4214 if ((err = sctp_init_asoc(inp, stcb, override_tag, vrf_id))) {
4216 SCTP_TCB_LOCK_DESTROY(stcb);
4217 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4218 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4219 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4220 SCTP_DECR_ASOC_COUNT();
4225 SCTP_INP_INFO_WLOCK();
4226 SCTP_INP_WLOCK(inp);
4227 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
4228 /* inpcb freed while alloc going on */
4229 SCTP_TCB_LOCK_DESTROY(stcb);
4230 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4231 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4232 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4233 SCTP_INP_WUNLOCK(inp);
4234 SCTP_INP_INFO_WUNLOCK();
4235 SCTP_DECR_ASOC_COUNT();
4236 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4240 SCTP_TCB_LOCK(stcb);
4242 /* now that my_vtag is set, add it to the hash */
4243 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))];
4244 /* put it in the bucket in the vtag hash of assoc's for the system */
4245 LIST_INSERT_HEAD(head, stcb, sctp_asocs);
4246 SCTP_INP_INFO_WUNLOCK();
4248 if ((err = sctp_add_remote_addr(stcb, firstaddr, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC))) {
4249 /* failure.. memory error? */
4250 if (asoc->strmout) {
4251 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4252 asoc->strmout = NULL;
4254 if (asoc->mapping_array) {
4255 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4256 asoc->mapping_array = NULL;
4258 if (asoc->nr_mapping_array) {
4259 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4260 asoc->nr_mapping_array = NULL;
4262 SCTP_DECR_ASOC_COUNT();
4263 SCTP_TCB_LOCK_DESTROY(stcb);
4264 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4265 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4266 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4267 SCTP_INP_WUNLOCK(inp);
4268 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4272 /* Init all the timers */
4273 SCTP_OS_TIMER_INIT(&asoc->hb_timer.timer);
4274 SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer);
4275 SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer);
4276 SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer);
4277 SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer);
4278 SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer);
4279 SCTP_OS_TIMER_INIT(&asoc->delayed_event_timer.timer);
4280 SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer);
4282 LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist);
4283 /* now file the port under the hash as well */
4284 if (inp->sctp_tcbhash != NULL) {
4285 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport,
4286 inp->sctp_hashmark)];
4287 LIST_INSERT_HEAD(head, stcb, sctp_tcbhash);
4289 SCTP_INP_WUNLOCK(inp);
4290 SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", stcb);
4296 sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
4298 struct sctp_association *asoc;
4302 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4303 if (net == asoc->primary_destination) {
4305 struct sctp_nets *lnet;
4307 lnet = TAILQ_FIRST(&asoc->nets);
4309 * Mobility adaptation Ideally, if deleted destination is
4310 * the primary, it becomes a fast retransmission trigger by
4311 * the subsequent SET PRIMARY. (by micchie)
4313 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
4314 SCTP_MOBILITY_BASE) ||
4315 sctp_is_mobility_feature_on(stcb->sctp_ep,
4316 SCTP_MOBILITY_FASTHANDOFF)) {
4317 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n");
4318 if (asoc->deleted_primary != NULL) {
4319 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n");
4322 asoc->deleted_primary = net;
4323 atomic_add_int(&net->ref_count, 1);
4324 memset(&net->lastsa, 0, sizeof(net->lastsa));
4325 memset(&net->lastsv, 0, sizeof(net->lastsv));
4326 sctp_mobility_feature_on(stcb->sctp_ep,
4327 SCTP_MOBILITY_PRIM_DELETED);
4328 sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED,
4329 stcb->sctp_ep, stcb, NULL);
4332 /* Try to find a confirmed primary */
4333 asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0);
4335 if (net == asoc->last_data_chunk_from) {
4337 asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets);
4339 if (net == asoc->last_control_chunk_from) {
4341 asoc->last_control_chunk_from = NULL;
4343 sctp_free_remote_addr(net);
4347 * remove a remote endpoint address from an association, it will fail if the
4348 * address does not exist.
4351 sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
4354 * Here we need to remove a remote address. This is quite simple, we
4355 * first find it in the list of address for the association
4356 * (tasoc->asoc.nets) and then if it is there, we do a LIST_REMOVE
4357 * on that item. Note we do not allow it to be removed if there are
4358 * no other addresses.
4360 struct sctp_association *asoc;
4361 struct sctp_nets *net, *net_tmp;
4365 /* locate the address */
4366 for (net = TAILQ_FIRST(&asoc->nets); net != NULL; net = net_tmp) {
4367 net_tmp = TAILQ_NEXT(net, sctp_next);
4368 if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) {
4371 if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr,
4373 /* we found the guy */
4374 if (asoc->numnets < 2) {
4375 /* Must have at LEAST two remote addresses */
4378 sctp_remove_net(stcb, net);
4388 sctp_delete_from_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4390 struct sctpvtaghead *chain;
4391 struct sctp_tagblock *twait_block;
4395 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4396 if (!LIST_EMPTY(chain)) {
4397 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4398 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4399 if ((twait_block->vtag_block[i].v_tag == tag) &&
4400 (twait_block->vtag_block[i].lport == lport) &&
4401 (twait_block->vtag_block[i].rport == rport)) {
4402 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4403 twait_block->vtag_block[i].v_tag = 0;
4404 twait_block->vtag_block[i].lport = 0;
4405 twait_block->vtag_block[i].rport = 0;
4417 sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4419 struct sctpvtaghead *chain;
4420 struct sctp_tagblock *twait_block;
4424 SCTP_INP_INFO_WLOCK();
4425 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4426 if (!LIST_EMPTY(chain)) {
4427 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4428 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4429 if ((twait_block->vtag_block[i].v_tag == tag) &&
4430 (twait_block->vtag_block[i].lport == lport) &&
4431 (twait_block->vtag_block[i].rport == rport)) {
4440 SCTP_INP_INFO_WUNLOCK();
4446 sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport)
4448 struct sctpvtaghead *chain;
4449 struct sctp_tagblock *twait_block;
4457 (void)SCTP_GETTIME_TIMEVAL(&now);
4458 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4460 if (!LIST_EMPTY(chain)) {
4461 /* Block(s) present, lets find space, and expire on the fly */
4462 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4463 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4464 if ((twait_block->vtag_block[i].v_tag == 0) &&
4466 twait_block->vtag_block[i].tv_sec_at_expire =
4468 twait_block->vtag_block[i].v_tag = tag;
4469 twait_block->vtag_block[i].lport = lport;
4470 twait_block->vtag_block[i].rport = rport;
4472 } else if ((twait_block->vtag_block[i].v_tag) &&
4473 ((long)twait_block->vtag_block[i].tv_sec_at_expire < now.tv_sec)) {
4474 /* Audit expires this guy */
4475 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4476 twait_block->vtag_block[i].v_tag = 0;
4477 twait_block->vtag_block[i].lport = 0;
4478 twait_block->vtag_block[i].rport = 0;
4480 /* Reuse it for my new tag */
4481 twait_block->vtag_block[i].tv_sec_at_expire = now.tv_sec + time;
4482 twait_block->vtag_block[i].v_tag = tag;
4483 twait_block->vtag_block[i].lport = lport;
4484 twait_block->vtag_block[i].rport = rport;
4491 * We only do up to the block where we can
4492 * place our tag for audits
4498 /* Need to add a new block to chain */
4500 SCTP_MALLOC(twait_block, struct sctp_tagblock *,
4501 sizeof(struct sctp_tagblock), SCTP_M_TIMW);
4502 if (twait_block == NULL) {
4504 panic("Can not alloc tagblock");
4508 memset(twait_block, 0, sizeof(struct sctp_tagblock));
4509 LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock);
4510 twait_block->vtag_block[0].tv_sec_at_expire = now.tv_sec + time;
4511 twait_block->vtag_block[0].v_tag = tag;
4512 twait_block->vtag_block[0].lport = lport;
4513 twait_block->vtag_block[0].rport = rport;
4520 * Free the association after un-hashing the remote port. This
4521 * function ALWAYS returns holding NO LOCK on the stcb. It DOES
4522 * expect that the input to this function IS a locked TCB.
4523 * It will return 0, if it did NOT destroy the association (instead
4524 * it unlocks it. It will return NON-zero if it either destroyed the
4525 * association OR the association is already destroyed.
4528 sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
4531 struct sctp_association *asoc;
4532 struct sctp_nets *net, *prev;
4533 struct sctp_laddr *laddr;
4534 struct sctp_tmit_chunk *chk;
4535 struct sctp_asconf_addr *aparam;
4536 struct sctp_asconf_ack *aack;
4537 struct sctp_stream_reset_list *liste;
4538 struct sctp_queued_to_read *sq;
4539 struct sctp_stream_queue_pending *sp;
4540 sctp_sharedkey_t *shared_key;
4545 /* first, lets purge the entry from the hash table. */
4547 #ifdef SCTP_LOG_CLOSING
4548 sctp_log_closing(inp, stcb, 6);
4550 if (stcb->asoc.state == 0) {
4551 #ifdef SCTP_LOG_CLOSING
4552 sctp_log_closing(inp, NULL, 7);
4554 /* there is no asoc, really TSNH :-0 */
4558 if (stcb->freed_from_where == 0) {
4559 /* Only record the first place free happened from */
4560 stcb->freed_from_where = from_location;
4565 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4566 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4567 /* nothing around */
4570 so = inp->sctp_socket;
4573 * We used timer based freeing if a reader or writer is in the way.
4574 * So we first check if we are actually being called from a timer,
4575 * if so we abort early if a reader or writer is still in the way.
4577 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
4578 (from_inpcbfree == SCTP_NORMAL_PROC)) {
4580 * is it the timer driving us? if so are the reader/writers
4583 if (stcb->asoc.refcnt) {
4584 /* nope, reader or writer in the way */
4585 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4586 /* no asoc destroyed */
4587 SCTP_TCB_UNLOCK(stcb);
4588 #ifdef SCTP_LOG_CLOSING
4589 sctp_log_closing(inp, stcb, 8);
4594 /* now clean up any other timers */
4595 (void)SCTP_OS_TIMER_STOP(&asoc->hb_timer.timer);
4596 asoc->hb_timer.self = NULL;
4597 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4598 asoc->dack_timer.self = NULL;
4599 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4601 * For stream reset we don't blast this unless
4602 * it is a str-reset timer, it might be the
4603 * free-asoc timer which we DON'T want to
4606 if (asoc->strreset_timer.type == SCTP_TIMER_TYPE_STRRESET)
4607 asoc->strreset_timer.self = NULL;
4608 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4609 asoc->asconf_timer.self = NULL;
4610 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4611 asoc->autoclose_timer.self = NULL;
4612 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4613 asoc->shut_guard_timer.self = NULL;
4614 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4615 asoc->delayed_event_timer.self = NULL;
4616 /* Mobility adaptation */
4617 (void)SCTP_OS_TIMER_STOP(&asoc->delete_prim_timer.timer);
4618 asoc->delete_prim_timer.self = NULL;
4619 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4620 (void)SCTP_OS_TIMER_STOP(&net->fr_timer.timer);
4621 net->fr_timer.self = NULL;
4622 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4623 net->rxt_timer.self = NULL;
4624 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4625 net->pmtu_timer.self = NULL;
4627 /* Now the read queue needs to be cleaned up (only once) */
4629 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) {
4630 stcb->asoc.state |= SCTP_STATE_ABOUT_TO_BE_FREED;
4631 SCTP_INP_READ_LOCK(inp);
4632 TAILQ_FOREACH(sq, &inp->read_queue, next) {
4633 if (sq->stcb == stcb) {
4634 sq->do_not_ref_stcb = 1;
4635 sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
4637 * If there is no end, there never will be
4640 if (sq->end_added == 0) {
4641 /* Held for PD-API clear that. */
4642 sq->pdapi_aborted = 1;
4643 sq->held_length = 0;
4644 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) {
4646 * Need to add a PD-API
4647 * aborted indication.
4648 * Setting the control_pdapi
4649 * assures that it will be
4650 * added right after this
4655 stcb->asoc.control_pdapi = sq;
4656 strseq = (sq->sinfo_stream << 16) | sq->sinfo_ssn;
4657 sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION,
4659 SCTP_PARTIAL_DELIVERY_ABORTED,
4662 stcb->asoc.control_pdapi = NULL;
4665 /* Add an end to wake them */
4670 SCTP_INP_READ_UNLOCK(inp);
4671 if (stcb->block_entry) {
4673 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET);
4674 stcb->block_entry->error = ECONNRESET;
4675 stcb->block_entry = NULL;
4678 if ((stcb->asoc.refcnt) || (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE)) {
4680 * Someone holds a reference OR the socket is unaccepted
4683 if ((stcb->asoc.refcnt) ||
4684 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4685 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4686 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4687 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4689 SCTP_TCB_UNLOCK(stcb);
4690 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4691 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4692 /* nothing around */
4695 /* Wake any reader/writers */
4696 sctp_sorwakeup(inp, so);
4697 sctp_sowwakeup(inp, so);
4699 #ifdef SCTP_LOG_CLOSING
4700 sctp_log_closing(inp, stcb, 9);
4702 /* no asoc destroyed */
4705 #ifdef SCTP_LOG_CLOSING
4706 sctp_log_closing(inp, stcb, 10);
4709 * When I reach here, no others want to kill the assoc yet.. and I
4710 * own the lock. Now its possible an abort comes in when I do the
4711 * lock exchange below to grab all the locks to do the final take
4712 * out. to prevent this we increment the count, which will start a
4713 * timer and blow out above thus assuring us that we hold exclusive
4714 * killing of the asoc. Note that after getting back the TCB lock we
4715 * will go ahead and increment the counter back up and stop any
4716 * timer a passing stranger may have started :-S
4718 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4719 atomic_add_int(&stcb->asoc.refcnt, 1);
4721 SCTP_TCB_UNLOCK(stcb);
4722 SCTP_INP_INFO_WLOCK();
4723 SCTP_INP_WLOCK(inp);
4724 SCTP_TCB_LOCK(stcb);
4726 /* Double check the GONE flag */
4727 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4728 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4729 /* nothing around */
4732 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
4733 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4735 * For TCP type we need special handling when we are
4736 * connected. We also include the peel'ed off ones to.
4738 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4739 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED;
4740 inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED;
4743 if (so->so_rcv.sb_cc == 0) {
4744 so->so_state &= ~(SS_ISCONNECTING |
4745 SS_ISDISCONNECTING |
4749 socantrcvmore_locked(so);
4750 sctp_sowwakeup(inp, so);
4751 sctp_sorwakeup(inp, so);
4757 * Make it invalid too, that way if its about to run it will abort
4760 /* re-increment the lock */
4761 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4762 atomic_add_int(&stcb->asoc.refcnt, -1);
4764 if (stcb->asoc.refcnt) {
4765 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4766 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4767 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4768 SCTP_INP_INFO_WUNLOCK();
4769 SCTP_INP_WUNLOCK(inp);
4771 SCTP_TCB_UNLOCK(stcb);
4775 if (inp->sctp_tcbhash) {
4776 LIST_REMOVE(stcb, sctp_tcbhash);
4778 if (stcb->asoc.in_asocid_hash) {
4779 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4781 /* Now lets remove it from the list of ALL associations in the EP */
4782 LIST_REMOVE(stcb, sctp_tcblist);
4783 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4784 SCTP_INP_INCR_REF(inp);
4785 SCTP_INP_WUNLOCK(inp);
4787 /* pull from vtag hash */
4788 LIST_REMOVE(stcb, sctp_asocs);
4789 sctp_add_vtag_to_timewait(asoc->my_vtag, SCTP_BASE_SYSCTL(sctp_vtag_time_wait),
4790 inp->sctp_lport, stcb->rport);
4793 * Now restop the timers to be sure this is paranoia at is finest!
4795 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4796 (void)SCTP_OS_TIMER_STOP(&asoc->hb_timer.timer);
4797 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4798 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4799 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4800 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4801 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4802 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4803 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4804 (void)SCTP_OS_TIMER_STOP(&net->fr_timer.timer);
4805 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4806 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4809 asoc->strreset_timer.type = SCTP_TIMER_TYPE_NONE;
4812 * The chunk lists and such SHOULD be empty but we check them just
4815 /* anything on the wheel needs to be removed */
4816 for (i = 0; i < asoc->streamoutcnt; i++) {
4817 struct sctp_stream_out *outs;
4819 outs = &asoc->strmout[i];
4820 /* now clean up any chunks here */
4821 sp = TAILQ_FIRST(&outs->outqueue);
4823 TAILQ_REMOVE(&outs->outqueue, sp, next);
4826 /* Still an open socket - report */
4827 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
4828 SCTP_NOTIFY_DATAGRAM_UNSENT,
4829 (void *)sp, SCTP_SO_LOCKED);
4832 sctp_m_freem(sp->data);
4834 sp->tail_mbuf = NULL;
4838 sctp_free_remote_addr(sp->net);
4841 sctp_free_spbufspace(stcb, asoc, sp);
4842 if (sp->holds_key_ref)
4843 sctp_auth_key_release(stcb, sp->auth_keyid);
4844 /* Free the zone stuff */
4845 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_strmoq), sp);
4846 SCTP_DECR_STRMOQ_COUNT();
4847 /* sa_ignore FREED_MEMORY */
4848 sp = TAILQ_FIRST(&outs->outqueue);
4852 /* sa_ignore FREED_MEMORY */
4853 while ((liste = TAILQ_FIRST(&asoc->resetHead)) != NULL) {
4854 TAILQ_REMOVE(&asoc->resetHead, liste, next_resp);
4855 SCTP_FREE(liste, SCTP_M_STRESET);
4858 sq = TAILQ_FIRST(&asoc->pending_reply_queue);
4860 TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
4862 sctp_m_freem(sq->data);
4865 sctp_free_remote_addr(sq->whoFrom);
4868 /* Free the ctl entry */
4869 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
4870 SCTP_DECR_READQ_COUNT();
4871 /* sa_ignore FREED_MEMORY */
4872 sq = TAILQ_FIRST(&asoc->pending_reply_queue);
4875 chk = TAILQ_FIRST(&asoc->free_chunks);
4877 TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next);
4879 sctp_m_freem(chk->data);
4882 if (chk->holds_key_ref)
4883 sctp_auth_key_release(stcb, chk->auth_keyid);
4885 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4886 SCTP_DECR_CHK_COUNT();
4887 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1);
4888 asoc->free_chunk_cnt--;
4889 /* sa_ignore FREED_MEMORY */
4890 chk = TAILQ_FIRST(&asoc->free_chunks);
4892 /* pending send queue SHOULD be empty */
4893 if (!TAILQ_EMPTY(&asoc->send_queue)) {
4894 chk = TAILQ_FIRST(&asoc->send_queue);
4896 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
4899 /* Still a socket? */
4900 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb,
4901 SCTP_NOTIFY_DATAGRAM_UNSENT, chk, SCTP_SO_LOCKED);
4904 sctp_m_freem(chk->data);
4908 if (chk->holds_key_ref)
4909 sctp_auth_key_release(stcb, chk->auth_keyid);
4912 sctp_free_remote_addr(chk->whoTo);
4915 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4916 SCTP_DECR_CHK_COUNT();
4917 /* sa_ignore FREED_MEMORY */
4918 chk = TAILQ_FIRST(&asoc->send_queue);
4923 printf("Freed %d from send_queue\n", ccnt);
4927 /* sent queue SHOULD be empty */
4928 if (!TAILQ_EMPTY(&asoc->sent_queue)) {
4929 chk = TAILQ_FIRST(&asoc->sent_queue);
4931 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
4934 /* Still a socket? */
4935 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb,
4936 SCTP_NOTIFY_DATAGRAM_SENT, chk, SCTP_SO_LOCKED);
4939 sctp_m_freem(chk->data);
4943 if (chk->holds_key_ref)
4944 sctp_auth_key_release(stcb, chk->auth_keyid);
4946 sctp_free_remote_addr(chk->whoTo);
4947 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4948 SCTP_DECR_CHK_COUNT();
4949 /* sa_ignore FREED_MEMORY */
4950 chk = TAILQ_FIRST(&asoc->sent_queue);
4955 printf("Freed %d from sent_queue\n", ccnt);
4959 /* control queue MAY not be empty */
4960 if (!TAILQ_EMPTY(&asoc->control_send_queue)) {
4961 chk = TAILQ_FIRST(&asoc->control_send_queue);
4963 TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next);
4965 sctp_m_freem(chk->data);
4968 if (chk->holds_key_ref)
4969 sctp_auth_key_release(stcb, chk->auth_keyid);
4971 sctp_free_remote_addr(chk->whoTo);
4972 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4973 SCTP_DECR_CHK_COUNT();
4974 /* sa_ignore FREED_MEMORY */
4975 chk = TAILQ_FIRST(&asoc->control_send_queue);
4980 printf("Freed %d from ctrl_queue\n", ccnt);
4985 /* ASCONF queue MAY not be empty */
4986 if (!TAILQ_EMPTY(&asoc->asconf_send_queue)) {
4987 chk = TAILQ_FIRST(&asoc->asconf_send_queue);
4989 TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next);
4991 sctp_m_freem(chk->data);
4994 if (chk->holds_key_ref)
4995 sctp_auth_key_release(stcb, chk->auth_keyid);
4997 sctp_free_remote_addr(chk->whoTo);
4998 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4999 SCTP_DECR_CHK_COUNT();
5000 /* sa_ignore FREED_MEMORY */
5001 chk = TAILQ_FIRST(&asoc->asconf_send_queue);
5006 printf("Freed %d from asconf_queue\n", ccnt);
5010 if (!TAILQ_EMPTY(&asoc->reasmqueue)) {
5011 chk = TAILQ_FIRST(&asoc->reasmqueue);
5013 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
5015 sctp_m_freem(chk->data);
5018 if (chk->holds_key_ref)
5019 sctp_auth_key_release(stcb, chk->auth_keyid);
5020 sctp_free_remote_addr(chk->whoTo);
5022 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5023 SCTP_DECR_CHK_COUNT();
5024 /* sa_ignore FREED_MEMORY */
5025 chk = TAILQ_FIRST(&asoc->reasmqueue);
5030 printf("Freed %d from reasm_queue\n", ccnt);
5034 if (asoc->mapping_array) {
5035 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
5036 asoc->mapping_array = NULL;
5038 if (asoc->nr_mapping_array) {
5039 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
5040 asoc->nr_mapping_array = NULL;
5042 /* the stream outs */
5043 if (asoc->strmout) {
5044 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
5045 asoc->strmout = NULL;
5047 asoc->strm_realoutsize = asoc->streamoutcnt = 0;
5049 struct sctp_queued_to_read *ctl;
5051 for (i = 0; i < asoc->streamincnt; i++) {
5052 if (!TAILQ_EMPTY(&asoc->strmin[i].inqueue)) {
5053 /* We have somethings on the streamin queue */
5054 ctl = TAILQ_FIRST(&asoc->strmin[i].inqueue);
5056 TAILQ_REMOVE(&asoc->strmin[i].inqueue,
5058 sctp_free_remote_addr(ctl->whoFrom);
5060 sctp_m_freem(ctl->data);
5064 * We don't free the address here
5065 * since all the net's were freed
5068 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
5069 SCTP_DECR_READQ_COUNT();
5070 ctl = TAILQ_FIRST(&asoc->strmin[i].inqueue);
5074 SCTP_FREE(asoc->strmin, SCTP_M_STRMI);
5075 asoc->strmin = NULL;
5077 asoc->streamincnt = 0;
5078 while (!TAILQ_EMPTY(&asoc->nets)) {
5079 /* sa_ignore FREED_MEMORY */
5080 net = TAILQ_FIRST(&asoc->nets);
5081 /* pull from list */
5082 if ((SCTP_BASE_INFO(ipi_count_raddr) == 0) || (prev == net)) {
5084 panic("no net's left alloc'ed, or list points to itself");
5089 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
5090 sctp_free_remote_addr(net);
5093 while (!LIST_EMPTY(&asoc->sctp_restricted_addrs)) {
5094 /* sa_ignore FREED_MEMORY */
5095 laddr = LIST_FIRST(&asoc->sctp_restricted_addrs);
5096 sctp_remove_laddr(laddr);
5099 /* pending asconf (address) parameters */
5100 while (!TAILQ_EMPTY(&asoc->asconf_queue)) {
5101 /* sa_ignore FREED_MEMORY */
5102 aparam = TAILQ_FIRST(&asoc->asconf_queue);
5103 TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
5104 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
5106 while (!TAILQ_EMPTY(&asoc->asconf_ack_sent)) {
5107 /* sa_ignore FREED_MEMORY */
5108 aack = TAILQ_FIRST(&asoc->asconf_ack_sent);
5109 TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
5110 if (aack->data != NULL) {
5111 sctp_m_freem(aack->data);
5113 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
5115 /* clean up auth stuff */
5116 if (asoc->local_hmacs)
5117 sctp_free_hmaclist(asoc->local_hmacs);
5118 if (asoc->peer_hmacs)
5119 sctp_free_hmaclist(asoc->peer_hmacs);
5121 if (asoc->local_auth_chunks)
5122 sctp_free_chunklist(asoc->local_auth_chunks);
5123 if (asoc->peer_auth_chunks)
5124 sctp_free_chunklist(asoc->peer_auth_chunks);
5126 sctp_free_authinfo(&asoc->authinfo);
5128 shared_key = LIST_FIRST(&asoc->shared_keys);
5129 while (shared_key) {
5130 LIST_REMOVE(shared_key, next);
5131 sctp_free_sharedkey(shared_key);
5132 /* sa_ignore FREED_MEMORY */
5133 shared_key = LIST_FIRST(&asoc->shared_keys);
5136 /* Insert new items here :> */
5138 /* Get rid of LOCK */
5139 SCTP_TCB_LOCK_DESTROY(stcb);
5140 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
5141 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5142 SCTP_INP_INFO_WUNLOCK();
5143 SCTP_INP_RLOCK(inp);
5145 #ifdef SCTP_TRACK_FREED_ASOCS
5146 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5147 /* now clean up the tasoc itself */
5148 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5149 SCTP_DECR_ASOC_COUNT();
5151 LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist);
5154 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5155 SCTP_DECR_ASOC_COUNT();
5157 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5158 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5160 * If its NOT the inp_free calling us AND sctp_close
5161 * as been called, we call back...
5163 SCTP_INP_RUNLOCK(inp);
5165 * This will start the kill timer (if we are the
5166 * last one) since we hold an increment yet. But
5167 * this is the only safe way to do this since
5168 * otherwise if the socket closes at the same time
5169 * we are here we might collide in the cleanup.
5171 sctp_inpcb_free(inp,
5172 SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
5173 SCTP_CALLED_DIRECTLY_NOCMPSET);
5174 SCTP_INP_DECR_REF(inp);
5177 /* The socket is still open. */
5178 SCTP_INP_DECR_REF(inp);
5181 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5182 SCTP_INP_RUNLOCK(inp);
5185 /* destroyed the asoc */
5186 #ifdef SCTP_LOG_CLOSING
5187 sctp_log_closing(inp, NULL, 11);
5195 * determine if a destination is "reachable" based upon the addresses bound
5196 * to the current endpoint (e.g. only v4 or v6 currently bound)
5199 * FIX: if we allow assoc-level bindx(), then this needs to be fixed to use
5200 * assoc level v4/v6 flags, as the assoc *may* not have the same address
5201 * types bound as its endpoint
5204 sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
5206 struct sctp_inpcb *inp;
5210 * No locks here, the TCB, in all cases is already locked and an
5211 * assoc is up. There is either a INP lock by the caller applied (in
5212 * asconf case when deleting an address) or NOT in the HB case,
5213 * however if HB then the INP increment is up and the INP will not
5214 * be removed (on top of the fact that we have a TCB lock). So we
5215 * only want to read the sctp_flags, which is either bound-all or
5216 * not.. no protection needed since once an assoc is up you can't be
5217 * changing your binding.
5219 inp = stcb->sctp_ep;
5220 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5221 /* if bound all, destination is not restricted */
5223 * RRS: Question during lock work: Is this correct? If you
5224 * are bound-all you still might need to obey the V4--V6
5225 * flags??? IMO this bound-all stuff needs to be removed!
5229 /* NOTE: all "scope" checks are done when local addresses are added */
5230 if (destaddr->sa_family == AF_INET6) {
5231 answer = inp->ip_inp.inp.inp_vflag & INP_IPV6;
5232 } else if (destaddr->sa_family == AF_INET) {
5233 answer = inp->ip_inp.inp.inp_vflag & INP_IPV4;
5235 /* invalid family, so it's unreachable */
5242 * update the inp_vflags on an endpoint
5245 sctp_update_ep_vflag(struct sctp_inpcb *inp)
5247 struct sctp_laddr *laddr;
5249 /* first clear the flag */
5250 inp->ip_inp.inp.inp_vflag = 0;
5251 /* set the flag based on addresses on the ep list */
5252 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5253 if (laddr->ifa == NULL) {
5254 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
5258 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
5261 if (laddr->ifa->address.sa.sa_family == AF_INET6) {
5262 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5263 } else if (laddr->ifa->address.sa.sa_family == AF_INET) {
5264 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5270 * Add the address to the endpoint local address list There is nothing to be
5271 * done if we are bound to all addresses
5274 sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
5276 struct sctp_laddr *laddr;
5281 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5282 /* You are already bound to all. You have it already */
5285 if (ifa->address.sa.sa_family == AF_INET6) {
5286 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5287 /* Can't bind a non-useable addr. */
5291 /* first, is it already present? */
5292 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5293 if (laddr->ifa == ifa) {
5300 /* Not in the ep list */
5301 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action);
5305 /* update inp_vflag flags */
5306 if (ifa->address.sa.sa_family == AF_INET6) {
5307 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5308 } else if (ifa->address.sa.sa_family == AF_INET) {
5309 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5317 * select a new (hopefully reachable) destination net (should only be used
5318 * when we deleted an ep addr that is the only usable source address to reach
5319 * the destination net)
5322 sctp_select_primary_destination(struct sctp_tcb *stcb)
5324 struct sctp_nets *net;
5326 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5327 /* for now, we'll just pick the first reachable one we find */
5328 if (net->dest_state & SCTP_ADDR_UNCONFIRMED)
5330 if (sctp_destination_is_reachable(stcb,
5331 (struct sockaddr *)&net->ro._l_addr)) {
5332 /* found a reachable destination */
5333 stcb->asoc.primary_destination = net;
5336 /* I can't there from here! ...we're gonna die shortly... */
5341 * Delete the address from the endpoint local address list There is nothing
5342 * to be done if we are bound to all addresses
5345 sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa)
5347 struct sctp_laddr *laddr;
5351 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5352 /* You are already bound to all. You have it already */
5355 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5356 if (laddr->ifa == ifa) {
5361 if (fnd && (inp->laddr_count < 2)) {
5362 /* can't delete unless there are at LEAST 2 addresses */
5367 * clean up any use of this address go through our
5368 * associations and clear any last_used_address that match
5369 * this one for each assoc, see if a new primary_destination
5372 struct sctp_tcb *stcb;
5374 /* clean up "next_addr_touse" */
5375 if (inp->next_addr_touse == laddr)
5376 /* delete this address */
5377 inp->next_addr_touse = NULL;
5379 /* clean up "last_used_address" */
5380 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5381 struct sctp_nets *net;
5383 SCTP_TCB_LOCK(stcb);
5384 if (stcb->asoc.last_used_address == laddr)
5385 /* delete this address */
5386 stcb->asoc.last_used_address = NULL;
5388 * Now spin through all the nets and purge any ref
5391 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5392 if (net->ro._s_addr &&
5393 (net->ro._s_addr->ifa == laddr->ifa)) {
5394 /* Yep, purge src address selected */
5397 /* delete this address if cached */
5401 net->ro.ro_rt = NULL;
5403 sctp_free_ifa(net->ro._s_addr);
5404 net->ro._s_addr = NULL;
5405 net->src_addr_selected = 0;
5408 SCTP_TCB_UNLOCK(stcb);
5409 } /* for each tcb */
5410 /* remove it from the ep list */
5411 sctp_remove_laddr(laddr);
5413 /* update inp_vflag flags */
5414 sctp_update_ep_vflag(inp);
5420 * Add the address to the TCB local address restricted list.
5421 * This is a "pending" address list (eg. addresses waiting for an
5422 * ASCONF-ACK response) and cannot be used as a valid source address.
5425 sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5427 struct sctp_inpcb *inp;
5428 struct sctp_laddr *laddr;
5429 struct sctpladdr *list;
5432 * Assumes TCB is locked.. and possibly the INP. May need to
5433 * confirm/fix that if we need it and is not the case.
5435 list = &stcb->asoc.sctp_restricted_addrs;
5437 inp = stcb->sctp_ep;
5438 if (ifa->address.sa.sa_family == AF_INET6) {
5439 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5440 /* Can't bind a non-existent addr. */
5444 /* does the address already exist? */
5445 LIST_FOREACH(laddr, list, sctp_nxt_addr) {
5446 if (laddr->ifa == ifa) {
5451 /* add to the list */
5452 (void)sctp_insert_laddr(list, ifa, 0);
5457 * insert an laddr entry with the given ifa for the desired list
5460 sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
5462 struct sctp_laddr *laddr;
5464 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
5465 if (laddr == NULL) {
5466 /* out of memory? */
5467 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
5470 SCTP_INCR_LADDR_COUNT();
5471 bzero(laddr, sizeof(*laddr));
5472 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
5474 laddr->action = act;
5475 atomic_add_int(&ifa->refcount, 1);
5477 LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr);
5483 * Remove an laddr entry from the local address list (on an assoc)
5486 sctp_remove_laddr(struct sctp_laddr *laddr)
5489 /* remove from the list */
5490 LIST_REMOVE(laddr, sctp_nxt_addr);
5491 sctp_free_ifa(laddr->ifa);
5492 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr);
5493 SCTP_DECR_LADDR_COUNT();
5497 * Remove a local address from the TCB local address restricted list
5500 sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5502 struct sctp_inpcb *inp;
5503 struct sctp_laddr *laddr;
5506 * This is called by asconf work. It is assumed that a) The TCB is
5507 * locked and b) The INP is locked. This is true in as much as I can
5508 * trace through the entry asconf code where I did these locks.
5509 * Again, the ASCONF code is a bit different in that it does lock
5510 * the INP during its work often times. This must be since we don't
5511 * want other proc's looking up things while what they are looking
5512 * up is changing :-D
5515 inp = stcb->sctp_ep;
5516 /* if subset bound and don't allow ASCONF's, can't delete last */
5517 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
5518 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
5519 if (stcb->sctp_ep->laddr_count < 2) {
5520 /* can't delete last address */
5524 LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
5525 /* remove the address if it exists */
5526 if (laddr->ifa == NULL)
5528 if (laddr->ifa == ifa) {
5529 sctp_remove_laddr(laddr);
5534 /* address not found! */
5539 * Temporarily remove for __APPLE__ until we use the Tiger equivalents
5542 static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;
5543 static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR;
5549 * SCTP initialization for the PCB structures should be called by
5550 * the sctp_init() funciton.
5555 if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) {
5556 /* error I was called twice */
5559 SCTP_BASE_VAR(sctp_pcb_initialized) = 1;
5561 #if defined(SCTP_LOCAL_TRACE_BUF)
5562 bzero(&SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));
5564 (void)SCTP_GETTIME_TIMEVAL(&tv);
5565 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5566 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t) tv.tv_sec;
5567 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t) tv.tv_usec;
5569 SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t) tv.tv_sec;
5570 SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t) tv.tv_usec;
5572 /* init the empty list of (All) Endpoints */
5573 LIST_INIT(&SCTP_BASE_INFO(listhead));
5576 /* init the hash table of endpoints */
5577 TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize));
5578 TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize));
5579 TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale));
5580 SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31),
5581 &SCTP_BASE_INFO(hashasocmark));
5582 SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5583 &SCTP_BASE_INFO(hashmark));
5584 SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5585 &SCTP_BASE_INFO(hashtcpmark));
5586 SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize);
5589 SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH,
5590 &SCTP_BASE_INFO(hashvrfmark));
5592 SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE,
5593 &SCTP_BASE_INFO(vrf_ifn_hashmark));
5594 /* init the zones */
5596 * FIX ME: Should check for NULL returns, but if it does fail we are
5597 * doomed to panic anyways... add later maybe.
5599 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep",
5600 sizeof(struct sctp_inpcb), maxsockets);
5602 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc",
5603 sizeof(struct sctp_tcb), sctp_max_number_of_assoc);
5605 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr",
5606 sizeof(struct sctp_laddr),
5607 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5609 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr",
5610 sizeof(struct sctp_nets),
5611 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5613 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk",
5614 sizeof(struct sctp_tmit_chunk),
5615 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5617 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq",
5618 sizeof(struct sctp_queued_to_read),
5619 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5621 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out",
5622 sizeof(struct sctp_stream_queue_pending),
5623 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5625 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf",
5626 sizeof(struct sctp_asconf),
5627 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5629 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack",
5630 sizeof(struct sctp_asconf_ack),
5631 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5634 /* Master Lock INIT for info structure */
5635 SCTP_INP_INFO_LOCK_INIT();
5636 SCTP_STATLOG_INIT_LOCK();
5638 SCTP_IPI_COUNT_INIT();
5639 SCTP_IPI_ADDR_INIT();
5640 #ifdef SCTP_PACKET_LOGGING
5641 SCTP_IP_PKTLOG_INIT();
5643 LIST_INIT(&SCTP_BASE_INFO(addr_wq));
5645 SCTP_WQ_ADDR_INIT();
5646 /* not sure if we need all the counts */
5647 SCTP_BASE_INFO(ipi_count_ep) = 0;
5648 /* assoc/tcb zone info */
5649 SCTP_BASE_INFO(ipi_count_asoc) = 0;
5650 /* local addrlist zone info */
5651 SCTP_BASE_INFO(ipi_count_laddr) = 0;
5652 /* remote addrlist zone info */
5653 SCTP_BASE_INFO(ipi_count_raddr) = 0;
5655 SCTP_BASE_INFO(ipi_count_chunk) = 0;
5657 /* socket queue zone info */
5658 SCTP_BASE_INFO(ipi_count_readq) = 0;
5660 /* stream out queue cont */
5661 SCTP_BASE_INFO(ipi_count_strmoq) = 0;
5663 SCTP_BASE_INFO(ipi_free_strmoq) = 0;
5664 SCTP_BASE_INFO(ipi_free_chunks) = 0;
5666 SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer));
5668 /* Init the TIMEWAIT list */
5669 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5670 LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]);
5673 sctp_startup_iterator();
5676 * INIT the default VRF which for BSD is the only one, other O/S's
5677 * may have more. But initially they must start with one and then
5678 * add the VRF's as addresses are added.
5680 sctp_init_vrf_list(SCTP_DEFAULT_VRF);
5685 * Assumes that the SCTP_BASE_INFO() lock is NOT held.
5688 sctp_pcb_finish(void)
5690 struct sctp_vrflist *vrf_bucket;
5691 struct sctp_vrf *vrf;
5692 struct sctp_ifn *ifn;
5693 struct sctp_ifa *ifa;
5694 struct sctpvtaghead *chain;
5695 struct sctp_tagblock *twait_block, *prev_twait_block;
5696 struct sctp_laddr *wi;
5700 * Free BSD the it thread never exits but we do clean up. The only
5701 * way freebsd reaches here if we have VRF's but we still add the
5702 * ifdef to make it compile on old versions.
5705 struct sctp_iterator *it, *nit;
5707 SCTP_IPI_ITERATOR_WQ_LOCK();
5708 it = TAILQ_FIRST(&sctp_it_ctl.iteratorhead);
5710 nit = TAILQ_NEXT(it, sctp_nxt_itr);
5711 if (it->vn != curvnet) {
5715 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
5717 if (it->function_atend != NULL) {
5718 (*it->function_atend) (it->pointer, it->val);
5720 SCTP_FREE(it, SCTP_M_ITER);
5723 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5724 SCTP_ITERATOR_LOCK();
5725 if ((sctp_it_ctl.cur_it) &&
5726 (sctp_it_ctl.cur_it->vn == curvnet)) {
5727 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
5729 SCTP_ITERATOR_UNLOCK();
5732 SCTP_OS_TIMER_STOP(&SCTP_BASE_INFO(addr_wq_timer.timer));
5733 SCTP_WQ_ADDR_LOCK();
5734 while ((wi = LIST_FIRST(&SCTP_BASE_INFO(addr_wq))) != NULL) {
5735 LIST_REMOVE(wi, sctp_nxt_addr);
5736 SCTP_DECR_LADDR_COUNT();
5737 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi);
5739 SCTP_WQ_ADDR_UNLOCK();
5742 * free the vrf/ifn/ifa lists and hashes (be sure address monitor is
5745 vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))];
5746 while ((vrf = LIST_FIRST(vrf_bucket)) != NULL) {
5747 while ((ifn = LIST_FIRST(&vrf->ifnlist)) != NULL) {
5748 while ((ifa = LIST_FIRST(&ifn->ifalist)) != NULL) {
5750 LIST_REMOVE(ifa, next_bucket);
5751 LIST_REMOVE(ifa, next_ifa);
5752 SCTP_FREE(ifa, SCTP_M_IFA);
5755 LIST_REMOVE(ifn, next_bucket);
5756 LIST_REMOVE(ifn, next_ifn);
5757 SCTP_FREE(ifn, SCTP_M_IFN);
5759 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
5761 LIST_REMOVE(vrf, next_vrf);
5762 SCTP_FREE(vrf, SCTP_M_VRF);
5764 /* free the vrf hashes */
5765 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark));
5766 SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark));
5769 * free the TIMEWAIT list elements malloc'd in the function
5770 * sctp_add_vtag_to_timewait()...
5772 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5773 chain = &SCTP_BASE_INFO(vtag_timewait)[i];
5774 if (!LIST_EMPTY(chain)) {
5775 prev_twait_block = NULL;
5776 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
5777 if (prev_twait_block) {
5778 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
5780 prev_twait_block = twait_block;
5782 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
5786 /* free the locks and mutexes */
5787 #ifdef SCTP_PACKET_LOGGING
5788 SCTP_IP_PKTLOG_DESTROY();
5790 SCTP_IPI_ADDR_DESTROY();
5791 SCTP_STATLOG_DESTROY();
5792 SCTP_INP_INFO_LOCK_DESTROY();
5794 SCTP_WQ_ADDR_DESTROY();
5796 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep));
5797 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc));
5798 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr));
5799 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net));
5800 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk));
5801 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq));
5802 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq));
5803 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf));
5804 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack));
5805 /* Get rid of other stuff to */
5806 if (SCTP_BASE_INFO(sctp_asochash) != NULL)
5807 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark));
5808 if (SCTP_BASE_INFO(sctp_ephash) != NULL)
5809 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark));
5810 if (SCTP_BASE_INFO(sctp_tcpephash) != NULL)
5811 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark));
5817 sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m,
5818 int iphlen, int offset, int limit, struct sctphdr *sh,
5819 struct sockaddr *altsa)
5822 * grub through the INIT pulling addresses and loading them to the
5823 * nets structure in the asoc. The from address in the mbuf should
5824 * also be loaded (if it is not already). This routine can be called
5825 * with either INIT or INIT-ACK's as long as the m points to the IP
5826 * packet and the offset points to the beginning of the parameters.
5828 struct sctp_inpcb *inp, *l_inp;
5829 struct sctp_nets *net, *net_tmp;
5831 struct sctp_paramhdr *phdr, parm_buf;
5832 struct sctp_tcb *stcb_tmp;
5833 uint16_t ptype, plen;
5834 struct sockaddr *sa;
5835 struct sockaddr_storage dest_store;
5836 struct sockaddr *local_sa = (struct sockaddr *)&dest_store;
5837 struct sockaddr_in sin;
5838 struct sockaddr_in6 sin6;
5839 uint8_t random_store[SCTP_PARAM_BUFFER_SIZE];
5840 struct sctp_auth_random *p_random = NULL;
5841 uint16_t random_len = 0;
5842 uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE];
5843 struct sctp_auth_hmac_algo *hmacs = NULL;
5844 uint16_t hmacs_len = 0;
5845 uint8_t saw_asconf = 0;
5846 uint8_t saw_asconf_ack = 0;
5847 uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE];
5848 struct sctp_auth_chunk_list *chunks = NULL;
5849 uint16_t num_chunks = 0;
5850 sctp_key_t *new_key;
5852 int got_random = 0, got_hmacs = 0, got_chklist = 0;
5854 /* First get the destination address setup too. */
5855 memset(&sin, 0, sizeof(sin));
5856 memset(&sin6, 0, sizeof(sin6));
5858 sin.sin_family = AF_INET;
5859 sin.sin_len = sizeof(sin);
5860 sin.sin_port = stcb->rport;
5862 sin6.sin6_family = AF_INET6;
5863 sin6.sin6_len = sizeof(struct sockaddr_in6);
5864 sin6.sin6_port = stcb->rport;
5865 if (altsa == NULL) {
5866 iph = mtod(m, struct ip *);
5867 switch (iph->ip_v) {
5871 struct sockaddr_in *sin_2;
5873 sin_2 = (struct sockaddr_in *)(local_sa);
5874 memset(sin_2, 0, sizeof(sin));
5875 sin_2->sin_family = AF_INET;
5876 sin_2->sin_len = sizeof(sin);
5877 sin_2->sin_port = sh->dest_port;
5878 sin_2->sin_addr.s_addr = iph->ip_dst.s_addr;
5879 sin.sin_addr = iph->ip_src;
5880 sa = (struct sockaddr *)&sin;
5884 case IPV6_VERSION >> 4:
5887 struct ip6_hdr *ip6;
5888 struct sockaddr_in6 *sin6_2;
5890 ip6 = mtod(m, struct ip6_hdr *);
5891 sin6_2 = (struct sockaddr_in6 *)(local_sa);
5892 memset(sin6_2, 0, sizeof(sin6));
5893 sin6_2->sin6_family = AF_INET6;
5894 sin6_2->sin6_len = sizeof(struct sockaddr_in6);
5895 sin6_2->sin6_port = sh->dest_port;
5896 sin6.sin6_addr = ip6->ip6_src;
5897 sa = (struct sockaddr *)&sin6;
5907 * For cookies we use the src address NOT from the packet
5908 * but from the original INIT
5912 /* Turn off ECN until we get through all params */
5913 stcb->asoc.ecn_allowed = 0;
5914 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5915 /* mark all addresses that we have currently on the list */
5916 net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC;
5918 /* does the source address already exist? if so skip it */
5919 l_inp = inp = stcb->sctp_ep;
5921 atomic_add_int(&stcb->asoc.refcnt, 1);
5922 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, local_sa, stcb);
5923 atomic_add_int(&stcb->asoc.refcnt, -1);
5925 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) {
5926 /* we must add the source address */
5927 /* no scope set here since we have a tcb already. */
5928 if ((sa->sa_family == AF_INET) &&
5929 (stcb->asoc.ipv4_addr_legal)) {
5930 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) {
5933 } else if ((sa->sa_family == AF_INET6) &&
5934 (stcb->asoc.ipv6_addr_legal)) {
5935 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
5940 if (net_tmp != NULL && stcb_tmp == stcb) {
5941 net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC;
5942 } else if (stcb_tmp != stcb) {
5943 /* It belongs to another association? */
5945 SCTP_TCB_UNLOCK(stcb_tmp);
5949 if (stcb->asoc.state == 0) {
5950 /* the assoc was freed? */
5954 * peer must explicitly turn this on. This may have been initialized
5955 * to be "on" in order to allow local addr changes while INIT's are
5958 stcb->asoc.peer_supports_asconf = 0;
5959 /* now we must go through each of the params. */
5960 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
5962 ptype = ntohs(phdr->param_type);
5963 plen = ntohs(phdr->param_length);
5965 * printf("ptype => %0x, plen => %d\n", (uint32_t)ptype,
5968 if (offset + plen > limit) {
5974 if (ptype == SCTP_IPV4_ADDRESS) {
5975 if (stcb->asoc.ipv4_addr_legal) {
5976 struct sctp_ipv4addr_param *p4, p4_buf;
5978 /* ok get the v4 address and check/add */
5979 phdr = sctp_get_next_param(m, offset,
5980 (struct sctp_paramhdr *)&p4_buf,
5982 if (plen != sizeof(struct sctp_ipv4addr_param) ||
5986 p4 = (struct sctp_ipv4addr_param *)phdr;
5987 sin.sin_addr.s_addr = p4->addr;
5988 if (IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) {
5989 /* Skip multi-cast addresses */
5992 if ((sin.sin_addr.s_addr == INADDR_BROADCAST) ||
5993 (sin.sin_addr.s_addr == INADDR_ANY)) {
5996 sa = (struct sockaddr *)&sin;
5997 inp = stcb->sctp_ep;
5998 atomic_add_int(&stcb->asoc.refcnt, 1);
5999 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6001 atomic_add_int(&stcb->asoc.refcnt, -1);
6003 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) ||
6005 /* we must add the source address */
6007 * no scope set since we have a tcb
6012 * we must validate the state again
6016 if (stcb->asoc.state == 0) {
6017 /* the assoc was freed? */
6020 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) {
6023 } else if (stcb_tmp == stcb) {
6024 if (stcb->asoc.state == 0) {
6025 /* the assoc was freed? */
6031 ~SCTP_ADDR_NOT_IN_ASSOC;
6035 * strange, address is in another
6036 * assoc? straighten out locks.
6039 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6044 sctp_abort_an_association(stcb_tmp->sctp_ep,
6045 stcb_tmp, 1, NULL, 0);
6048 SCTP_TCB_UNLOCK(stcb_tmp);
6050 if (stcb->asoc.state == 0) {
6051 /* the assoc was freed? */
6057 } else if (ptype == SCTP_IPV6_ADDRESS) {
6058 if (stcb->asoc.ipv6_addr_legal) {
6059 /* ok get the v6 address and check/add */
6060 struct sctp_ipv6addr_param *p6, p6_buf;
6062 phdr = sctp_get_next_param(m, offset,
6063 (struct sctp_paramhdr *)&p6_buf,
6065 if (plen != sizeof(struct sctp_ipv6addr_param) ||
6069 p6 = (struct sctp_ipv6addr_param *)phdr;
6070 memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
6072 if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) {
6073 /* Skip multi-cast addresses */
6076 if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) {
6078 * Link local make no sense without
6083 sa = (struct sockaddr *)&sin6;
6084 inp = stcb->sctp_ep;
6085 atomic_add_int(&stcb->asoc.refcnt, 1);
6086 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6088 atomic_add_int(&stcb->asoc.refcnt, -1);
6089 if (stcb_tmp == NULL &&
6090 (inp == stcb->sctp_ep || inp == NULL)) {
6092 * we must validate the state again
6096 if (stcb->asoc.state == 0) {
6097 /* the assoc was freed? */
6101 * we must add the address, no scope
6104 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) {
6107 } else if (stcb_tmp == stcb) {
6109 * we must validate the state again
6112 if (stcb->asoc.state == 0) {
6113 /* the assoc was freed? */
6119 ~SCTP_ADDR_NOT_IN_ASSOC;
6123 * strange, address is in another
6124 * assoc? straighten out locks.
6127 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6132 sctp_abort_an_association(stcb_tmp->sctp_ep,
6133 stcb_tmp, 1, NULL, 0);
6136 SCTP_TCB_UNLOCK(stcb_tmp);
6138 if (stcb->asoc.state == 0) {
6139 /* the assoc was freed? */
6145 } else if (ptype == SCTP_ECN_CAPABLE) {
6146 stcb->asoc.ecn_allowed = 1;
6147 } else if (ptype == SCTP_ULP_ADAPTATION) {
6148 if (stcb->asoc.state != SCTP_STATE_OPEN) {
6149 struct sctp_adaptation_layer_indication ai,
6152 phdr = sctp_get_next_param(m, offset,
6153 (struct sctp_paramhdr *)&ai, sizeof(ai));
6154 aip = (struct sctp_adaptation_layer_indication *)phdr;
6156 stcb->asoc.peers_adaptation = ntohl(aip->indication);
6157 stcb->asoc.adaptation_needed = 1;
6160 } else if (ptype == SCTP_SET_PRIM_ADDR) {
6161 struct sctp_asconf_addr_param lstore, *fee;
6162 struct sctp_asconf_addrv4_param *fii;
6164 struct sockaddr *lsa = NULL;
6166 stcb->asoc.peer_supports_asconf = 1;
6167 if (plen > sizeof(lstore)) {
6170 phdr = sctp_get_next_param(m, offset,
6171 (struct sctp_paramhdr *)&lstore,
6172 min(plen, sizeof(lstore)));
6176 fee = (struct sctp_asconf_addr_param *)phdr;
6177 lptype = ntohs(fee->addrp.ph.param_type);
6178 if (lptype == SCTP_IPV4_ADDRESS) {
6180 sizeof(struct sctp_asconf_addrv4_param)) {
6181 SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n",
6182 (int)sizeof(struct sctp_asconf_addrv4_param),
6185 fii = (struct sctp_asconf_addrv4_param *)fee;
6186 sin.sin_addr.s_addr = fii->addrp.addr;
6187 lsa = (struct sockaddr *)&sin;
6189 } else if (lptype == SCTP_IPV6_ADDRESS) {
6191 sizeof(struct sctp_asconf_addr_param)) {
6192 SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n",
6193 (int)sizeof(struct sctp_asconf_addr_param),
6196 memcpy(sin6.sin6_addr.s6_addr,
6198 sizeof(fee->addrp.addr));
6199 lsa = (struct sockaddr *)&sin6;
6203 (void)sctp_set_primary_addr(stcb, sa, NULL);
6205 } else if (ptype == SCTP_HAS_NAT_SUPPORT) {
6206 stcb->asoc.peer_supports_nat = 1;
6207 } else if (ptype == SCTP_PRSCTP_SUPPORTED) {
6208 /* Peer supports pr-sctp */
6209 stcb->asoc.peer_supports_prsctp = 1;
6210 } else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) {
6211 /* A supported extension chunk */
6212 struct sctp_supported_chunk_types_param *pr_supported;
6213 uint8_t local_store[SCTP_PARAM_BUFFER_SIZE];
6216 phdr = sctp_get_next_param(m, offset,
6217 (struct sctp_paramhdr *)&local_store, min(sizeof(local_store), plen));
6221 stcb->asoc.peer_supports_asconf = 0;
6222 stcb->asoc.peer_supports_prsctp = 0;
6223 stcb->asoc.peer_supports_pktdrop = 0;
6224 stcb->asoc.peer_supports_strreset = 0;
6225 stcb->asoc.peer_supports_nr_sack = 0;
6226 stcb->asoc.peer_supports_auth = 0;
6227 pr_supported = (struct sctp_supported_chunk_types_param *)phdr;
6228 num_ent = plen - sizeof(struct sctp_paramhdr);
6229 for (i = 0; i < num_ent; i++) {
6230 switch (pr_supported->chunk_types[i]) {
6232 case SCTP_ASCONF_ACK:
6233 stcb->asoc.peer_supports_asconf = 1;
6235 case SCTP_FORWARD_CUM_TSN:
6236 stcb->asoc.peer_supports_prsctp = 1;
6238 case SCTP_PACKET_DROPPED:
6239 stcb->asoc.peer_supports_pktdrop = 1;
6241 case SCTP_NR_SELECTIVE_ACK:
6242 stcb->asoc.peer_supports_nr_sack = 1;
6244 case SCTP_STREAM_RESET:
6245 stcb->asoc.peer_supports_strreset = 1;
6247 case SCTP_AUTHENTICATION:
6248 stcb->asoc.peer_supports_auth = 1;
6251 /* one I have not learned yet */
6256 } else if (ptype == SCTP_ECN_NONCE_SUPPORTED) {
6257 /* Peer supports ECN-nonce */
6258 stcb->asoc.peer_supports_ecn_nonce = 1;
6259 stcb->asoc.ecn_nonce_allowed = 1;
6260 } else if (ptype == SCTP_RANDOM) {
6261 if (plen > sizeof(random_store))
6264 /* already processed a RANDOM */
6267 phdr = sctp_get_next_param(m, offset,
6268 (struct sctp_paramhdr *)random_store,
6269 min(sizeof(random_store), plen));
6272 p_random = (struct sctp_auth_random *)phdr;
6273 random_len = plen - sizeof(*p_random);
6274 /* enforce the random length */
6275 if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) {
6276 SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n");
6280 } else if (ptype == SCTP_HMAC_LIST) {
6284 if (plen > sizeof(hmacs_store))
6287 /* already processed a HMAC list */
6290 phdr = sctp_get_next_param(m, offset,
6291 (struct sctp_paramhdr *)hmacs_store,
6292 min(plen, sizeof(hmacs_store)));
6295 hmacs = (struct sctp_auth_hmac_algo *)phdr;
6296 hmacs_len = plen - sizeof(*hmacs);
6297 num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]);
6298 /* validate the hmac list */
6299 if (sctp_verify_hmac_param(hmacs, num_hmacs)) {
6302 if (stcb->asoc.peer_hmacs != NULL)
6303 sctp_free_hmaclist(stcb->asoc.peer_hmacs);
6304 stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs);
6305 if (stcb->asoc.peer_hmacs != NULL) {
6306 for (i = 0; i < num_hmacs; i++) {
6307 (void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs,
6308 ntohs(hmacs->hmac_ids[i]));
6312 } else if (ptype == SCTP_CHUNK_LIST) {
6315 if (plen > sizeof(chunks_store))
6318 /* already processed a Chunks list */
6321 phdr = sctp_get_next_param(m, offset,
6322 (struct sctp_paramhdr *)chunks_store,
6323 min(plen, sizeof(chunks_store)));
6326 chunks = (struct sctp_auth_chunk_list *)phdr;
6327 num_chunks = plen - sizeof(*chunks);
6328 if (stcb->asoc.peer_auth_chunks != NULL)
6329 sctp_clear_chunklist(stcb->asoc.peer_auth_chunks);
6331 stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist();
6332 for (i = 0; i < num_chunks; i++) {
6333 (void)sctp_auth_add_chunk(chunks->chunk_types[i],
6334 stcb->asoc.peer_auth_chunks);
6335 /* record asconf/asconf-ack if listed */
6336 if (chunks->chunk_types[i] == SCTP_ASCONF)
6338 if (chunks->chunk_types[i] == SCTP_ASCONF_ACK)
6343 } else if ((ptype == SCTP_HEARTBEAT_INFO) ||
6344 (ptype == SCTP_STATE_COOKIE) ||
6345 (ptype == SCTP_UNRECOG_PARAM) ||
6346 (ptype == SCTP_COOKIE_PRESERVE) ||
6347 (ptype == SCTP_SUPPORTED_ADDRTYPE) ||
6348 (ptype == SCTP_ADD_IP_ADDRESS) ||
6349 (ptype == SCTP_DEL_IP_ADDRESS) ||
6350 (ptype == SCTP_ERROR_CAUSE_IND) ||
6351 (ptype == SCTP_SUCCESS_REPORT)) {
6354 if ((ptype & 0x8000) == 0x0000) {
6356 * must stop processing the rest of the
6357 * param's. Any report bits were handled
6359 * sctp_arethere_unrecognized_parameters()
6360 * when the INIT or INIT-ACK was first seen.
6367 offset += SCTP_SIZE32(plen);
6368 if (offset >= limit) {
6371 phdr = sctp_get_next_param(m, offset, &parm_buf,
6374 /* Now check to see if we need to purge any addresses */
6375 for (net = TAILQ_FIRST(&stcb->asoc.nets); net != NULL; net = net_tmp) {
6376 net_tmp = TAILQ_NEXT(net, sctp_next);
6377 if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) ==
6378 SCTP_ADDR_NOT_IN_ASSOC) {
6379 /* This address has been removed from the asoc */
6380 /* remove and free it */
6381 stcb->asoc.numnets--;
6382 TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next);
6383 sctp_free_remote_addr(net);
6384 if (net == stcb->asoc.primary_destination) {
6385 stcb->asoc.primary_destination = NULL;
6386 sctp_select_primary_destination(stcb);
6390 /* validate authentication required parameters */
6391 if (got_random && got_hmacs) {
6392 stcb->asoc.peer_supports_auth = 1;
6394 stcb->asoc.peer_supports_auth = 0;
6396 if (!stcb->asoc.peer_supports_auth && got_chklist) {
6397 /* peer does not support auth but sent a chunks list? */
6400 if (!SCTP_BASE_SYSCTL(sctp_asconf_auth_nochk) && stcb->asoc.peer_supports_asconf &&
6401 !stcb->asoc.peer_supports_auth) {
6402 /* peer supports asconf but not auth? */
6404 } else if ((stcb->asoc.peer_supports_asconf) && (stcb->asoc.peer_supports_auth) &&
6405 ((saw_asconf == 0) || (saw_asconf_ack == 0))) {
6408 /* concatenate the full random key */
6409 keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len;
6410 if (chunks != NULL) {
6411 keylen += sizeof(*chunks) + num_chunks;
6413 new_key = sctp_alloc_key(keylen);
6414 if (new_key != NULL) {
6415 /* copy in the RANDOM */
6416 if (p_random != NULL) {
6417 keylen = sizeof(*p_random) + random_len;
6418 bcopy(p_random, new_key->key, keylen);
6420 /* append in the AUTH chunks */
6421 if (chunks != NULL) {
6422 bcopy(chunks, new_key->key + keylen,
6423 sizeof(*chunks) + num_chunks);
6424 keylen += sizeof(*chunks) + num_chunks;
6426 /* append in the HMACs */
6427 if (hmacs != NULL) {
6428 bcopy(hmacs, new_key->key + keylen,
6429 sizeof(*hmacs) + hmacs_len);
6432 /* failed to get memory for the key */
6435 if (stcb->asoc.authinfo.peer_random != NULL)
6436 sctp_free_key(stcb->asoc.authinfo.peer_random);
6437 stcb->asoc.authinfo.peer_random = new_key;
6438 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid);
6439 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid);
6445 sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa,
6446 struct sctp_nets *net)
6448 /* make sure the requested primary address exists in the assoc */
6449 if (net == NULL && sa)
6450 net = sctp_findnet(stcb, sa);
6453 /* didn't find the requested primary address! */
6456 /* set the primary address */
6457 if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
6458 /* Must be confirmed, so queue to set */
6459 net->dest_state |= SCTP_ADDR_REQ_PRIMARY;
6462 stcb->asoc.primary_destination = net;
6463 net->dest_state &= ~SCTP_ADDR_WAS_PRIMARY;
6464 net = TAILQ_FIRST(&stcb->asoc.nets);
6465 if (net != stcb->asoc.primary_destination) {
6467 * first one on the list is NOT the primary
6468 * sctp_cmpaddr() is much more efficient if the
6469 * primary is the first on the list, make it so.
6471 TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6472 TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6479 sctp_is_vtag_good(struct sctp_inpcb *inp, uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now, int save_in_twait)
6482 * This function serves two purposes. It will see if a TAG can be
6483 * re-used and return 1 for yes it is ok and 0 for don't use that
6484 * tag. A secondary function it will do is purge out old tags that
6487 struct sctpvtaghead *chain;
6488 struct sctp_tagblock *twait_block;
6489 struct sctpasochead *head;
6490 struct sctp_tcb *stcb;
6493 SCTP_INP_INFO_RLOCK();
6494 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag,
6495 SCTP_BASE_INFO(hashasocmark))];
6498 goto skip_vtag_check;
6500 LIST_FOREACH(stcb, head, sctp_asocs) {
6502 * We choose not to lock anything here. TCB's can't be
6503 * removed since we have the read lock, so they can't be
6504 * freed on us, same thing for the INP. I may be wrong with
6505 * this assumption, but we will go with it for now :-)
6507 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
6510 if (stcb->asoc.my_vtag == tag) {
6512 if (stcb->rport != rport) {
6515 if (stcb->sctp_ep->sctp_lport != lport) {
6518 /* Its a used tag set */
6519 SCTP_INP_INFO_RUNLOCK();
6525 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
6526 /* Now what about timed wait ? */
6527 if (!LIST_EMPTY(chain)) {
6529 * Block(s) are present, lets see if we have this tag in the
6532 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6533 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
6534 if (twait_block->vtag_block[i].v_tag == 0) {
6537 } else if ((long)twait_block->vtag_block[i].tv_sec_at_expire <
6539 /* Audit expires this guy */
6540 twait_block->vtag_block[i].tv_sec_at_expire = 0;
6541 twait_block->vtag_block[i].v_tag = 0;
6542 twait_block->vtag_block[i].lport = 0;
6543 twait_block->vtag_block[i].rport = 0;
6544 } else if ((twait_block->vtag_block[i].v_tag == tag) &&
6545 (twait_block->vtag_block[i].lport == lport) &&
6546 (twait_block->vtag_block[i].rport == rport)) {
6547 /* Bad tag, sorry :< */
6548 SCTP_INP_INFO_RUNLOCK();
6554 SCTP_INP_INFO_RUNLOCK();
6559 static sctp_assoc_t reneged_asoc_ids[256];
6560 static uint8_t reneged_at = 0;
6564 sctp_drain_mbufs(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
6567 * We must hunt this association for MBUF's past the cumack (i.e.
6568 * out of order data that we can renege on).
6570 struct sctp_association *asoc;
6571 struct sctp_tmit_chunk *chk, *nchk;
6572 uint32_t cumulative_tsn_p1;
6573 struct sctp_queued_to_read *ctl, *nctl;
6578 /* We look for anything larger than the cum-ack + 1 */
6581 if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) {
6582 /* none we can reneg on. */
6585 SCTP_STAT_INCR(sctps_protocol_drains_done);
6586 cumulative_tsn_p1 = asoc->cumulative_tsn + 1;
6588 /* First look in the re-assembly queue */
6589 chk = TAILQ_FIRST(&asoc->reasmqueue);
6591 /* Get the next one */
6592 nchk = TAILQ_NEXT(chk, sctp_next);
6593 if (compare_with_wrap(chk->rec.data.TSN_seq,
6594 cumulative_tsn_p1, MAX_TSN)) {
6595 /* Yep it is above cum-ack */
6597 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.TSN_seq, asoc->mapping_array_base_tsn);
6598 asoc->size_on_reasm_queue = sctp_sbspace_sub(asoc->size_on_reasm_queue, chk->send_size);
6599 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6600 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6601 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
6603 sctp_m_freem(chk->data);
6606 sctp_free_a_chunk(stcb, chk);
6610 /* Ok that was fun, now we will drain all the inbound streams? */
6611 for (strmat = 0; strmat < asoc->streamincnt; strmat++) {
6612 ctl = TAILQ_FIRST(&asoc->strmin[strmat].inqueue);
6614 nctl = TAILQ_NEXT(ctl, next);
6615 if (compare_with_wrap(ctl->sinfo_tsn,
6616 cumulative_tsn_p1, MAX_TSN)) {
6617 /* Yep it is above cum-ack */
6619 SCTP_CALC_TSN_TO_GAP(gap, ctl->sinfo_tsn, asoc->mapping_array_base_tsn);
6620 asoc->size_on_all_streams = sctp_sbspace_sub(asoc->size_on_all_streams, ctl->length);
6621 sctp_ucount_decr(asoc->cnt_on_all_streams);
6622 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6623 TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, ctl, next);
6625 sctp_m_freem(ctl->data);
6628 sctp_free_remote_addr(ctl->whoFrom);
6629 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
6630 SCTP_DECR_READQ_COUNT();
6636 /* We must back down to see what the new highest is */
6637 for (i = asoc->highest_tsn_inside_map;
6638 (compare_with_wrap(i, asoc->mapping_array_base_tsn, MAX_TSN) || (i == asoc->mapping_array_base_tsn));
6640 SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn);
6641 if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) {
6642 asoc->highest_tsn_inside_map = i;
6648 asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1;
6651 * Question, should we go through the delivery queue? The
6652 * only reason things are on here is the app not reading OR
6653 * a p-d-api up. An attacker COULD send enough in to
6654 * initiate the PD-API and then send a bunch of stuff to
6655 * other streams... these would wind up on the delivery
6656 * queue.. and then we would not get to them. But in order
6657 * to do this I then have to back-track and un-deliver
6658 * sequence numbers in streams.. el-yucko. I think for now
6659 * we will NOT look at the delivery queue and leave it to be
6660 * something to consider later. An alternative would be to
6661 * abort the P-D-API with a notification and then deliver
6662 * the data.... Or another method might be to keep track of
6663 * how many times the situation occurs and if we see a
6664 * possible attack underway just abort the association.
6667 SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt);
6670 * Now do we need to find a new
6671 * asoc->highest_tsn_inside_map?
6673 asoc->last_revoke_count = cnt;
6674 (void)SCTP_OS_TIMER_STOP(&stcb->asoc.dack_timer.timer);
6675 /* sa_ignore NO_NULL_CHK */
6676 sctp_send_sack(stcb);
6677 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED);
6678 reneged_asoc_ids[reneged_at] = sctp_get_associd(stcb);
6682 * Another issue, in un-setting the TSN's in the mapping array we
6683 * DID NOT adjust the highest_tsn marker. This will cause one of
6684 * two things to occur. It may cause us to do extra work in checking
6685 * for our mapping array movement. More importantly it may cause us
6686 * to SACK every datagram. This may not be a bad thing though since
6687 * we will recover once we get our cum-ack above and all this stuff
6688 * we dumped recovered.
6696 * We must walk the PCB lists for ALL associations here. The system
6697 * is LOW on MBUF's and needs help. This is where reneging will
6698 * occur. We really hope this does NOT happen!
6700 VNET_ITERATOR_DECL(vnet_iter);
6701 VNET_LIST_RLOCK_NOSLEEP();
6702 VNET_FOREACH(vnet_iter) {
6703 CURVNET_SET(vnet_iter);
6704 struct sctp_inpcb *inp;
6705 struct sctp_tcb *stcb;
6707 SCTP_STAT_INCR(sctps_protocol_drain_calls);
6708 if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
6715 SCTP_INP_INFO_RLOCK();
6716 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
6717 /* For each endpoint */
6718 SCTP_INP_RLOCK(inp);
6719 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
6720 /* For each association */
6721 SCTP_TCB_LOCK(stcb);
6722 sctp_drain_mbufs(inp, stcb);
6723 SCTP_TCB_UNLOCK(stcb);
6725 SCTP_INP_RUNLOCK(inp);
6727 SCTP_INP_INFO_RUNLOCK();
6730 VNET_LIST_RUNLOCK_NOSLEEP();
6734 * start a new iterator
6735 * iterates through all endpoints and associations based on the pcb_state
6736 * flags and asoc_state. "af" (mandatory) is executed for all matching
6737 * assocs and "ef" (optional) is executed when the iterator completes.
6738 * "inpf" (optional) is executed for each new endpoint as it is being
6739 * iterated through. inpe (optional) is called when the inp completes
6740 * its way through all the stcbs.
6743 sctp_initiate_iterator(inp_func inpf,
6747 uint32_t pcb_features,
6748 uint32_t asoc_state,
6752 struct sctp_inpcb *s_inp,
6753 uint8_t chunk_output_off)
6755 struct sctp_iterator *it = NULL;
6760 SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator),
6763 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
6766 memset(it, 0, sizeof(*it));
6767 it->function_assoc = af;
6768 it->function_inp = inpf;
6770 it->done_current_ep = 0;
6772 it->done_current_ep = 1;
6773 it->function_atend = ef;
6776 it->pcb_flags = pcb_state;
6777 it->pcb_features = pcb_features;
6778 it->asoc_state = asoc_state;
6779 it->function_inp_end = inpe;
6780 it->no_chunk_output = chunk_output_off;
6783 /* Assume lock is held here */
6785 SCTP_INP_INCR_REF(it->inp);
6786 it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP;
6788 SCTP_INP_INFO_RLOCK();
6789 it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead));
6791 SCTP_INP_INCR_REF(it->inp);
6793 SCTP_INP_INFO_RUNLOCK();
6794 it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP;
6797 SCTP_IPI_ITERATOR_WQ_LOCK();
6799 TAILQ_INSERT_TAIL(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
6800 if (sctp_it_ctl.iterator_running == 0) {
6801 sctp_wakeup_iterator();
6803 SCTP_IPI_ITERATOR_WQ_UNLOCK();
6804 /* sa_ignore MEMLEAK {memory is put on the tailq for the iterator} */