2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
5 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
6 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
11 * a) Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
14 * b) Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the distribution.
18 * c) Neither the name of Cisco Systems, Inc. nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #include <netinet/sctp_os.h>
40 #include <netinet/sctp_var.h>
41 #include <netinet/sctp_sysctl.h>
42 #include <netinet/sctp_pcb.h>
43 #include <netinet/sctputil.h>
44 #include <netinet/sctp.h>
45 #include <netinet/sctp_header.h>
46 #include <netinet/sctp_asconf.h>
47 #include <netinet/sctp_output.h>
48 #include <netinet/sctp_timer.h>
49 #include <netinet/sctp_bsd_addr.h>
50 #if defined(INET) || defined(INET6)
51 #include <netinet/udp.h>
54 #include <netinet6/ip6_var.h>
56 #include <sys/sched.h>
58 #include <sys/unistd.h>
61 VNET_DEFINE(struct sctp_base_info, system_base_info);
63 /* FIX: we don't handle multiple link local scopes */
64 /* "scopeless" replacement IN6_ARE_ADDR_EQUAL */
67 SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b)
69 struct sockaddr_in6 tmp_a, tmp_b;
71 memcpy(&tmp_a, a, sizeof(struct sockaddr_in6));
72 if (sa6_embedscope(&tmp_a, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
75 memcpy(&tmp_b, b, sizeof(struct sockaddr_in6));
76 if (sa6_embedscope(&tmp_b, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
79 return (IN6_ARE_ADDR_EQUAL(&tmp_a.sin6_addr, &tmp_b.sin6_addr));
84 sctp_fill_pcbinfo(struct sctp_pcbinfo *spcb)
87 * We really don't need to lock this, but I will just because it
90 SCTP_INP_INFO_RLOCK();
91 spcb->ep_count = SCTP_BASE_INFO(ipi_count_ep);
92 spcb->asoc_count = SCTP_BASE_INFO(ipi_count_asoc);
93 spcb->laddr_count = SCTP_BASE_INFO(ipi_count_laddr);
94 spcb->raddr_count = SCTP_BASE_INFO(ipi_count_raddr);
95 spcb->chk_count = SCTP_BASE_INFO(ipi_count_chunk);
96 spcb->readq_count = SCTP_BASE_INFO(ipi_count_readq);
97 spcb->stream_oque = SCTP_BASE_INFO(ipi_count_strmoq);
98 spcb->free_chunks = SCTP_BASE_INFO(ipi_free_chunks);
99 SCTP_INP_INFO_RUNLOCK();
103 * Addresses are added to VRF's (Virtual Router's). For BSD we
104 * have only the default VRF 0. We maintain a hash list of
105 * VRF's. Each VRF has its own list of sctp_ifn's. Each of
106 * these has a list of addresses. When we add a new address
107 * to a VRF we lookup the ifn/ifn_index, if the ifn does
108 * not exist we create it and add it to the list of IFN's
109 * within the VRF. Once we have the sctp_ifn, we add the
110 * address to the list. So we look something like:
113 * vrf-> ifn-> ifn -> ifn
115 * ... +--ifa-> ifa -> ifa
118 * We keep these separate lists since the SCTP subsystem will
119 * point to these from its source address selection nets structure.
120 * When an address is deleted it does not happen right away on
121 * the SCTP side, it gets scheduled. What we do when a
122 * delete happens is immediately remove the address from
123 * the master list and decrement the refcount. As our
124 * addip iterator works through and frees the src address
125 * selection pointing to the sctp_ifa, eventually the refcount
126 * will reach 0 and we will delete it. Note that it is assumed
127 * that any locking on system level ifn/ifa is done at the
128 * caller of these functions and these routines will only
129 * lock the SCTP structures as they add or delete things.
131 * Other notes on VRF concepts.
132 * - An endpoint can be in multiple VRF's
133 * - An association lives within a VRF and only one VRF.
134 * - Any incoming packet we can deduce the VRF for by
135 * looking at the mbuf/pak inbound (for BSD its VRF=0 :D)
136 * - Any downward send call or connect call must supply the
137 * VRF via ancillary data or via some sort of set default
138 * VRF socket option call (again for BSD no brainer since
139 * the VRF is always 0).
140 * - An endpoint may add multiple VRF's to it.
141 * - Listening sockets can accept associations in any
142 * of the VRF's they are in but the assoc will end up
143 * in only one VRF (gotten from the packet or connect/send).
148 sctp_allocate_vrf(int vrf_id)
150 struct sctp_vrf *vrf = NULL;
151 struct sctp_vrflist *bucket;
153 /* First allocate the VRF structure */
154 vrf = sctp_find_vrf(vrf_id);
156 /* Already allocated */
159 SCTP_MALLOC(vrf, struct sctp_vrf *, sizeof(struct sctp_vrf),
164 panic("No memory for VRF:%d", vrf_id);
169 memset(vrf, 0, sizeof(struct sctp_vrf));
170 vrf->vrf_id = vrf_id;
171 LIST_INIT(&vrf->ifnlist);
172 vrf->total_ifa_count = 0;
174 /* now also setup table ids */
175 SCTP_INIT_VRF_TABLEID(vrf);
176 /* Init the HASH of addresses */
177 vrf->vrf_addr_hash = SCTP_HASH_INIT(SCTP_VRF_ADDR_HASH_SIZE,
178 &vrf->vrf_addr_hashmark);
179 if (vrf->vrf_addr_hash == NULL) {
182 panic("No memory for VRF:%d", vrf_id);
184 SCTP_FREE(vrf, SCTP_M_VRF);
188 /* Add it to the hash table */
189 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
190 LIST_INSERT_HEAD(bucket, vrf, next_vrf);
191 atomic_add_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
197 sctp_find_ifn(void *ifn, uint32_t ifn_index)
199 struct sctp_ifn *sctp_ifnp;
200 struct sctp_ifnlist *hash_ifn_head;
203 * We assume the lock is held for the addresses if that's wrong
204 * problems could occur :-)
206 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
207 LIST_FOREACH(sctp_ifnp, hash_ifn_head, next_bucket) {
208 if (sctp_ifnp->ifn_index == ifn_index) {
211 if (sctp_ifnp->ifn_p && ifn && (sctp_ifnp->ifn_p == ifn)) {
220 sctp_find_vrf(uint32_t vrf_id)
222 struct sctp_vrflist *bucket;
223 struct sctp_vrf *liste;
225 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
226 LIST_FOREACH(liste, bucket, next_vrf) {
227 if (vrf_id == liste->vrf_id) {
236 sctp_free_vrf(struct sctp_vrf *vrf)
238 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&vrf->refcount)) {
239 if (vrf->vrf_addr_hash) {
240 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
241 vrf->vrf_addr_hash = NULL;
243 /* We zero'd the count */
244 LIST_REMOVE(vrf, next_vrf);
245 SCTP_FREE(vrf, SCTP_M_VRF);
246 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
252 sctp_free_ifn(struct sctp_ifn *sctp_ifnp)
254 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifnp->refcount)) {
255 /* We zero'd the count */
256 if (sctp_ifnp->vrf) {
257 sctp_free_vrf(sctp_ifnp->vrf);
259 SCTP_FREE(sctp_ifnp, SCTP_M_IFN);
260 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
266 sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu)
268 struct sctp_ifn *sctp_ifnp;
270 sctp_ifnp = sctp_find_ifn((void *)NULL, ifn_index);
271 if (sctp_ifnp != NULL) {
272 sctp_ifnp->ifn_mtu = mtu;
278 sctp_free_ifa(struct sctp_ifa *sctp_ifap)
280 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifap->refcount)) {
281 /* We zero'd the count */
282 if (sctp_ifap->ifn_p) {
283 sctp_free_ifn(sctp_ifap->ifn_p);
285 SCTP_FREE(sctp_ifap, SCTP_M_IFA);
286 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
292 sctp_delete_ifn(struct sctp_ifn *sctp_ifnp, int hold_addr_lock)
294 struct sctp_ifn *found;
296 found = sctp_find_ifn(sctp_ifnp->ifn_p, sctp_ifnp->ifn_index);
298 /* Not in the list.. sorry */
301 if (hold_addr_lock == 0)
302 SCTP_IPI_ADDR_WLOCK();
303 LIST_REMOVE(sctp_ifnp, next_bucket);
304 LIST_REMOVE(sctp_ifnp, next_ifn);
305 SCTP_DEREGISTER_INTERFACE(sctp_ifnp->ifn_index,
306 sctp_ifnp->registered_af);
307 if (hold_addr_lock == 0)
308 SCTP_IPI_ADDR_WUNLOCK();
309 /* Take away the reference, and possibly free it */
310 sctp_free_ifn(sctp_ifnp);
315 sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr,
316 const char *if_name, uint32_t ifn_index)
318 struct sctp_vrf *vrf;
319 struct sctp_ifa *sctp_ifap;
321 SCTP_IPI_ADDR_RLOCK();
322 vrf = sctp_find_vrf(vrf_id);
324 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
328 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
329 if (sctp_ifap == NULL) {
330 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
333 if (sctp_ifap->ifn_p == NULL) {
334 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unusable\n");
338 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) != 0) {
339 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
340 sctp_ifap->ifn_p->ifn_name, if_name);
344 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
345 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
346 sctp_ifap->ifn_p->ifn_index, ifn_index);
351 sctp_ifap->localifa_flags &= (~SCTP_ADDR_VALID);
352 sctp_ifap->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE;
354 SCTP_IPI_ADDR_RUNLOCK();
359 sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr,
360 const char *if_name, uint32_t ifn_index)
362 struct sctp_vrf *vrf;
363 struct sctp_ifa *sctp_ifap;
365 SCTP_IPI_ADDR_RLOCK();
366 vrf = sctp_find_vrf(vrf_id);
368 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
372 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
373 if (sctp_ifap == NULL) {
374 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
377 if (sctp_ifap->ifn_p == NULL) {
378 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unusable\n");
382 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) != 0) {
383 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
384 sctp_ifap->ifn_p->ifn_name, if_name);
388 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
389 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
390 sctp_ifap->ifn_p->ifn_index, ifn_index);
395 sctp_ifap->localifa_flags &= (~SCTP_ADDR_IFA_UNUSEABLE);
396 sctp_ifap->localifa_flags |= SCTP_ADDR_VALID;
398 SCTP_IPI_ADDR_RUNLOCK();
403 * Add an ifa to an ifn.
404 * Register the interface as necessary.
405 * NOTE: ADDR write lock MUST be held.
408 sctp_add_ifa_to_ifn(struct sctp_ifn *sctp_ifnp, struct sctp_ifa *sctp_ifap)
412 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
413 sctp_ifap->ifn_p = sctp_ifnp;
414 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
415 /* update address counts */
416 sctp_ifnp->ifa_count++;
417 ifa_af = sctp_ifap->address.sa.sa_family;
432 if (sctp_ifnp->ifa_count == 1) {
433 /* register the new interface */
434 SCTP_REGISTER_INTERFACE(sctp_ifnp->ifn_index, ifa_af);
435 sctp_ifnp->registered_af = ifa_af;
441 * Remove an ifa from its ifn.
442 * If no more addresses exist, remove the ifn too. Otherwise, re-register
443 * the interface based on the remaining address families left.
444 * NOTE: ADDR write lock MUST be held.
447 sctp_remove_ifa_from_ifn(struct sctp_ifa *sctp_ifap)
449 LIST_REMOVE(sctp_ifap, next_ifa);
450 if (sctp_ifap->ifn_p) {
451 /* update address counts */
452 sctp_ifap->ifn_p->ifa_count--;
453 switch (sctp_ifap->address.sa.sa_family) {
456 sctp_ifap->ifn_p->num_v4--;
461 sctp_ifap->ifn_p->num_v6--;
468 if (LIST_EMPTY(&sctp_ifap->ifn_p->ifalist)) {
469 /* remove the ifn, possibly freeing it */
470 sctp_delete_ifn(sctp_ifap->ifn_p, SCTP_ADDR_LOCKED);
472 /* re-register address family type, if needed */
473 if ((sctp_ifap->ifn_p->num_v6 == 0) &&
474 (sctp_ifap->ifn_p->registered_af == AF_INET6)) {
475 SCTP_DEREGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET6);
476 SCTP_REGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET);
477 sctp_ifap->ifn_p->registered_af = AF_INET;
478 } else if ((sctp_ifap->ifn_p->num_v4 == 0) &&
479 (sctp_ifap->ifn_p->registered_af == AF_INET)) {
480 SCTP_DEREGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET);
481 SCTP_REGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET6);
482 sctp_ifap->ifn_p->registered_af = AF_INET6;
484 /* free the ifn refcount */
485 sctp_free_ifn(sctp_ifap->ifn_p);
487 sctp_ifap->ifn_p = NULL;
493 sctp_add_addr_to_vrf(uint32_t vrf_id, void *ifn, uint32_t ifn_index,
494 uint32_t ifn_type, const char *if_name, void *ifa,
495 struct sockaddr *addr, uint32_t ifa_flags,
498 struct sctp_vrf *vrf;
499 struct sctp_ifn *sctp_ifnp = NULL;
500 struct sctp_ifa *sctp_ifap = NULL;
501 struct sctp_ifalist *hash_addr_head;
502 struct sctp_ifnlist *hash_ifn_head;
503 uint32_t hash_of_addr;
507 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: adding address: ", vrf_id);
508 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
510 SCTP_IPI_ADDR_WLOCK();
511 sctp_ifnp = sctp_find_ifn(ifn, ifn_index);
513 vrf = sctp_ifnp->vrf;
515 vrf = sctp_find_vrf(vrf_id);
517 vrf = sctp_allocate_vrf(vrf_id);
519 SCTP_IPI_ADDR_WUNLOCK();
524 if (sctp_ifnp == NULL) {
526 * build one and add it, can't hold lock until after malloc
529 SCTP_IPI_ADDR_WUNLOCK();
530 SCTP_MALLOC(sctp_ifnp, struct sctp_ifn *,
531 sizeof(struct sctp_ifn), SCTP_M_IFN);
532 if (sctp_ifnp == NULL) {
534 panic("No memory for IFN");
538 memset(sctp_ifnp, 0, sizeof(struct sctp_ifn));
539 sctp_ifnp->ifn_index = ifn_index;
540 sctp_ifnp->ifn_p = ifn;
541 sctp_ifnp->ifn_type = ifn_type;
542 sctp_ifnp->refcount = 0;
543 sctp_ifnp->vrf = vrf;
544 atomic_add_int(&vrf->refcount, 1);
545 sctp_ifnp->ifn_mtu = SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, addr->sa_family);
546 if (if_name != NULL) {
547 snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", if_name);
549 snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", "unknown");
551 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
552 LIST_INIT(&sctp_ifnp->ifalist);
553 SCTP_IPI_ADDR_WLOCK();
554 LIST_INSERT_HEAD(hash_ifn_head, sctp_ifnp, next_bucket);
555 LIST_INSERT_HEAD(&vrf->ifnlist, sctp_ifnp, next_ifn);
556 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
559 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
561 /* Hmm, it already exists? */
562 if ((sctp_ifap->ifn_p) &&
563 (sctp_ifap->ifn_p->ifn_index == ifn_index)) {
564 SCTPDBG(SCTP_DEBUG_PCB4, "Using existing ifn %s (0x%x) for ifa %p\n",
565 sctp_ifap->ifn_p->ifn_name, ifn_index,
568 /* Remove the created one that we don't want */
569 sctp_delete_ifn(sctp_ifnp, SCTP_ADDR_LOCKED);
571 if (sctp_ifap->localifa_flags & SCTP_BEING_DELETED) {
572 /* easy to solve, just switch back to active */
573 SCTPDBG(SCTP_DEBUG_PCB4, "Clearing deleted ifa flag\n");
574 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
575 sctp_ifap->ifn_p = sctp_ifnp;
576 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
579 SCTP_IPI_ADDR_WUNLOCK();
582 if (sctp_ifap->ifn_p) {
584 * The last IFN gets the address, remove the
587 SCTPDBG(SCTP_DEBUG_PCB4, "Moving ifa %p from %s (0x%x) to %s (0x%x)\n",
588 (void *)sctp_ifap, sctp_ifap->ifn_p->ifn_name,
589 sctp_ifap->ifn_p->ifn_index, if_name,
591 /* remove the address from the old ifn */
592 sctp_remove_ifa_from_ifn(sctp_ifap);
593 /* move the address over to the new ifn */
594 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
595 goto exit_stage_left;
597 /* repair ifnp which was NULL ? */
598 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
599 SCTPDBG(SCTP_DEBUG_PCB4, "Repairing ifn %p for ifa %p\n",
600 (void *)sctp_ifnp, (void *)sctp_ifap);
601 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
603 goto exit_stage_left;
606 SCTP_IPI_ADDR_WUNLOCK();
607 SCTP_MALLOC(sctp_ifap, struct sctp_ifa *, sizeof(struct sctp_ifa), SCTP_M_IFA);
608 if (sctp_ifap == NULL) {
610 panic("No memory for IFA");
614 memset(sctp_ifap, 0, sizeof(struct sctp_ifa));
615 sctp_ifap->ifn_p = sctp_ifnp;
616 atomic_add_int(&sctp_ifnp->refcount, 1);
617 sctp_ifap->vrf_id = vrf_id;
618 sctp_ifap->ifa = ifa;
619 memcpy(&sctp_ifap->address, addr, addr->sa_len);
620 sctp_ifap->localifa_flags = SCTP_ADDR_VALID | SCTP_ADDR_DEFER_USE;
621 sctp_ifap->flags = ifa_flags;
623 switch (sctp_ifap->address.sa.sa_family) {
627 struct sockaddr_in *sin;
629 sin = &sctp_ifap->address.sin;
630 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
631 (IN4_ISLOOPBACK_ADDRESS(&sin->sin_addr))) {
632 sctp_ifap->src_is_loop = 1;
634 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
635 sctp_ifap->src_is_priv = 1;
639 new_ifn_af = AF_INET;
646 /* ok to use deprecated addresses? */
647 struct sockaddr_in6 *sin6;
649 sin6 = &sctp_ifap->address.sin6;
650 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
651 (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))) {
652 sctp_ifap->src_is_loop = 1;
654 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
655 sctp_ifap->src_is_priv = 1;
659 new_ifn_af = AF_INET6;
667 hash_of_addr = sctp_get_ifa_hash_val(&sctp_ifap->address.sa);
669 if ((sctp_ifap->src_is_priv == 0) &&
670 (sctp_ifap->src_is_loop == 0)) {
671 sctp_ifap->src_is_glob = 1;
673 SCTP_IPI_ADDR_WLOCK();
674 hash_addr_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
675 LIST_INSERT_HEAD(hash_addr_head, sctp_ifap, next_bucket);
676 sctp_ifap->refcount = 1;
677 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
678 sctp_ifnp->ifa_count++;
679 vrf->total_ifa_count++;
680 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
682 SCTP_REGISTER_INTERFACE(ifn_index, new_ifn_af);
683 sctp_ifnp->registered_af = new_ifn_af;
685 SCTP_IPI_ADDR_WUNLOCK();
688 * Bump up the refcount so that when the timer completes it
689 * will drop back down.
691 struct sctp_laddr *wi;
693 atomic_add_int(&sctp_ifap->refcount, 1);
694 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
697 * Gak, what can we do? We have lost an address
698 * change can you say HOSED?
700 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
701 /* Opps, must decrement the count */
702 sctp_del_addr_from_vrf(vrf_id, addr, ifn_index,
706 SCTP_INCR_LADDR_COUNT();
707 memset(wi, 0, sizeof(*wi));
708 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
710 wi->action = SCTP_ADD_IP_ADDRESS;
713 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
714 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
715 (struct sctp_inpcb *)NULL,
716 (struct sctp_tcb *)NULL,
717 (struct sctp_nets *)NULL);
718 SCTP_WQ_ADDR_UNLOCK();
720 /* it's ready for use */
721 sctp_ifap->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
727 sctp_del_addr_from_vrf(uint32_t vrf_id, struct sockaddr *addr,
728 uint32_t ifn_index, const char *if_name)
730 struct sctp_vrf *vrf;
731 struct sctp_ifa *sctp_ifap = NULL;
733 SCTP_IPI_ADDR_WLOCK();
734 vrf = sctp_find_vrf(vrf_id);
736 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
741 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: deleting address:", vrf_id);
742 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
744 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
746 /* Validate the delete */
747 if (sctp_ifap->ifn_p) {
751 * The name has priority over the ifn_index
752 * if its given. We do this especially for
753 * panda who might recycle indexes fast.
756 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) == 0) {
757 /* They match its a correct delete */
762 /* last ditch check ifn_index */
763 if (ifn_index == sctp_ifap->ifn_p->ifn_index) {
768 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s does not match addresses\n",
769 ifn_index, ((if_name == NULL) ? "NULL" : if_name));
770 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s - ignoring delete\n",
771 sctp_ifap->ifn_p->ifn_index, sctp_ifap->ifn_p->ifn_name);
772 SCTP_IPI_ADDR_WUNLOCK();
776 SCTPDBG(SCTP_DEBUG_PCB4, "Deleting ifa %p\n", (void *)sctp_ifap);
777 sctp_ifap->localifa_flags &= SCTP_ADDR_VALID;
779 * We don't set the flag. This means that the structure will
780 * hang around in EP's that have bound specific to it until
781 * they close. This gives us TCP like behavior if someone
782 * removes an address (or for that matter adds it right
785 /* sctp_ifap->localifa_flags |= SCTP_BEING_DELETED; */
786 vrf->total_ifa_count--;
787 LIST_REMOVE(sctp_ifap, next_bucket);
788 sctp_remove_ifa_from_ifn(sctp_ifap);
792 SCTPDBG(SCTP_DEBUG_PCB4, "Del Addr-ifn:%d Could not find address:",
794 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
799 SCTP_IPI_ADDR_WUNLOCK();
801 struct sctp_laddr *wi;
803 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
806 * Gak, what can we do? We have lost an address
807 * change can you say HOSED?
809 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
811 /* Oops, must decrement the count */
812 sctp_free_ifa(sctp_ifap);
815 SCTP_INCR_LADDR_COUNT();
816 memset(wi, 0, sizeof(*wi));
817 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
819 wi->action = SCTP_DEL_IP_ADDRESS;
822 * Should this really be a tailq? As it is we will process
823 * the newest first :-0
825 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
826 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
827 (struct sctp_inpcb *)NULL,
828 (struct sctp_tcb *)NULL,
829 (struct sctp_nets *)NULL);
830 SCTP_WQ_ADDR_UNLOCK();
837 sctp_does_stcb_own_this_addr(struct sctp_tcb *stcb, struct sockaddr *to)
841 int ipv4_local_scope, ipv4_addr_legal;
844 int local_scope, site_scope, ipv6_addr_legal;
846 struct sctp_vrf *vrf;
847 struct sctp_ifn *sctp_ifn;
848 struct sctp_ifa *sctp_ifa;
850 loopback_scope = stcb->asoc.scope.loopback_scope;
852 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
853 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
856 local_scope = stcb->asoc.scope.local_scope;
857 site_scope = stcb->asoc.scope.site_scope;
858 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
861 SCTP_IPI_ADDR_RLOCK();
862 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
864 /* no vrf, no addresses */
865 SCTP_IPI_ADDR_RUNLOCK();
869 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
870 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
871 if ((loopback_scope == 0) &&
872 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
875 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
876 if (sctp_is_addr_restricted(stcb, sctp_ifa) &&
877 (!sctp_is_addr_pending(stcb, sctp_ifa))) {
879 * We allow pending addresses, where
880 * we have sent an asconf-add to be
885 if (sctp_ifa->address.sa.sa_family != to->sa_family) {
888 switch (sctp_ifa->address.sa.sa_family) {
891 if (ipv4_addr_legal) {
892 struct sockaddr_in *sin,
895 sin = &sctp_ifa->address.sin;
896 rsin = (struct sockaddr_in *)to;
897 if ((ipv4_local_scope == 0) &&
898 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
901 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
902 &sin->sin_addr) != 0) {
905 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
906 SCTP_IPI_ADDR_RUNLOCK();
914 if (ipv6_addr_legal) {
915 struct sockaddr_in6 *sin6,
918 sin6 = &sctp_ifa->address.sin6;
919 rsin6 = (struct sockaddr_in6 *)to;
920 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
921 &sin6->sin6_addr) != 0) {
924 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
925 if (local_scope == 0)
927 if (sin6->sin6_scope_id == 0) {
928 if (sa6_recoverscope(sin6) != 0)
932 if ((site_scope == 0) &&
933 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
936 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
937 SCTP_IPI_ADDR_RUNLOCK();
950 struct sctp_laddr *laddr;
952 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
953 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
954 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
957 if (sctp_is_addr_restricted(stcb, laddr->ifa) &&
958 (!sctp_is_addr_pending(stcb, laddr->ifa))) {
960 * We allow pending addresses, where we have
961 * sent an asconf-add to be considered
966 if (laddr->ifa->address.sa.sa_family != to->sa_family) {
969 switch (to->sa_family) {
973 struct sockaddr_in *sin, *rsin;
975 sin = &laddr->ifa->address.sin;
976 rsin = (struct sockaddr_in *)to;
977 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
978 SCTP_IPI_ADDR_RUNLOCK();
987 struct sockaddr_in6 *sin6, *rsin6;
989 sin6 = &laddr->ifa->address.sin6;
990 rsin6 = (struct sockaddr_in6 *)to;
991 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
992 SCTP_IPI_ADDR_RUNLOCK();
1006 SCTP_IPI_ADDR_RUNLOCK();
1011 static struct sctp_tcb *
1012 sctp_tcb_special_locate(struct sctp_inpcb **inp_p, struct sockaddr *from,
1013 struct sockaddr *to, struct sctp_nets **netp, uint32_t vrf_id)
1015 /**** ASSUMES THE CALLER holds the INP_INFO_RLOCK */
1017 * If we support the TCP model, then we must now dig through to see
1018 * if we can find our endpoint in the list of tcp ep's.
1020 uint16_t lport, rport;
1021 struct sctppcbhead *ephead;
1022 struct sctp_inpcb *inp;
1023 struct sctp_laddr *laddr;
1024 struct sctp_tcb *stcb;
1025 struct sctp_nets *net;
1027 if ((to == NULL) || (from == NULL)) {
1031 switch (to->sa_family) {
1034 if (from->sa_family == AF_INET) {
1035 lport = ((struct sockaddr_in *)to)->sin_port;
1036 rport = ((struct sockaddr_in *)from)->sin_port;
1044 if (from->sa_family == AF_INET6) {
1045 lport = ((struct sockaddr_in6 *)to)->sin6_port;
1046 rport = ((struct sockaddr_in6 *)from)->sin6_port;
1055 ephead = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
1057 * Ok now for each of the guys in this bucket we must look and see:
1058 * - Does the remote port match. - Does there single association's
1059 * addresses match this address (to). If so we update p_ep to point
1060 * to this ep and return the tcb from it.
1062 LIST_FOREACH(inp, ephead, sctp_hash) {
1063 SCTP_INP_RLOCK(inp);
1064 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1065 SCTP_INP_RUNLOCK(inp);
1068 if (lport != inp->sctp_lport) {
1069 SCTP_INP_RUNLOCK(inp);
1072 switch (to->sa_family) {
1076 struct sockaddr_in *sin;
1078 sin = (struct sockaddr_in *)to;
1079 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
1080 &sin->sin_addr) != 0) {
1081 SCTP_INP_RUNLOCK(inp);
1090 struct sockaddr_in6 *sin6;
1092 sin6 = (struct sockaddr_in6 *)to;
1093 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
1094 &sin6->sin6_addr) != 0) {
1095 SCTP_INP_RUNLOCK(inp);
1102 SCTP_INP_RUNLOCK(inp);
1105 if (inp->def_vrf_id != vrf_id) {
1106 SCTP_INP_RUNLOCK(inp);
1109 /* check to see if the ep has one of the addresses */
1110 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
1111 /* We are NOT bound all, so look further */
1114 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1116 if (laddr->ifa == NULL) {
1117 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n", __func__);
1120 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1121 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
1124 if (laddr->ifa->address.sa.sa_family ==
1126 /* see if it matches */
1128 if (from->sa_family == AF_INET) {
1129 struct sockaddr_in *intf_addr,
1132 intf_addr = &laddr->ifa->address.sin;
1133 sin = (struct sockaddr_in *)to;
1134 if (sin->sin_addr.s_addr ==
1135 intf_addr->sin_addr.s_addr) {
1142 if (from->sa_family == AF_INET6) {
1143 struct sockaddr_in6 *intf_addr6;
1144 struct sockaddr_in6 *sin6;
1146 sin6 = (struct sockaddr_in6 *)
1148 intf_addr6 = &laddr->ifa->address.sin6;
1150 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1160 /* This endpoint does not have this address */
1161 SCTP_INP_RUNLOCK(inp);
1166 * Ok if we hit here the ep has the address, does it hold
1169 /* XXX: Why don't we TAILQ_FOREACH through sctp_asoc_list? */
1170 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1172 SCTP_INP_RUNLOCK(inp);
1175 SCTP_TCB_LOCK(stcb);
1176 if (!sctp_does_stcb_own_this_addr(stcb, to)) {
1177 SCTP_TCB_UNLOCK(stcb);
1178 SCTP_INP_RUNLOCK(inp);
1181 if (stcb->rport != rport) {
1182 /* remote port does not match. */
1183 SCTP_TCB_UNLOCK(stcb);
1184 SCTP_INP_RUNLOCK(inp);
1187 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1188 SCTP_TCB_UNLOCK(stcb);
1189 SCTP_INP_RUNLOCK(inp);
1192 if (!sctp_does_stcb_own_this_addr(stcb, to)) {
1193 SCTP_TCB_UNLOCK(stcb);
1194 SCTP_INP_RUNLOCK(inp);
1197 /* Does this TCB have a matching address? */
1198 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1200 if (net->ro._l_addr.sa.sa_family != from->sa_family) {
1201 /* not the same family, can't be a match */
1204 switch (from->sa_family) {
1208 struct sockaddr_in *sin, *rsin;
1210 sin = (struct sockaddr_in *)&net->ro._l_addr;
1211 rsin = (struct sockaddr_in *)from;
1212 if (sin->sin_addr.s_addr ==
1213 rsin->sin_addr.s_addr) {
1219 * Update the endpoint
1223 SCTP_INP_RUNLOCK(inp);
1232 struct sockaddr_in6 *sin6, *rsin6;
1234 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1235 rsin6 = (struct sockaddr_in6 *)from;
1236 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1243 * Update the endpoint
1247 SCTP_INP_RUNLOCK(inp);
1258 SCTP_TCB_UNLOCK(stcb);
1259 SCTP_INP_RUNLOCK(inp);
1268 * 1) If I return a NULL you must decrement any INP ref cnt. 2) If I find an
1269 * stcb, both will be locked (locked_tcb and stcb) but decrement will be done
1270 * (if locked == NULL). 3) Decrement happens on return ONLY if locked ==
1275 sctp_findassociation_ep_addr(struct sctp_inpcb **inp_p, struct sockaddr *remote,
1276 struct sctp_nets **netp, struct sockaddr *local, struct sctp_tcb *locked_tcb)
1278 struct sctpasochead *head;
1279 struct sctp_inpcb *inp;
1280 struct sctp_tcb *stcb = NULL;
1281 struct sctp_nets *net;
1285 switch (remote->sa_family) {
1288 rport = (((struct sockaddr_in *)remote)->sin_port);
1293 rport = (((struct sockaddr_in6 *)remote)->sin6_port);
1301 * UN-lock so we can do proper locking here this occurs when
1302 * called from load_addresses_from_init.
1304 atomic_add_int(&locked_tcb->asoc.refcnt, 1);
1305 SCTP_TCB_UNLOCK(locked_tcb);
1307 SCTP_INP_INFO_RLOCK();
1308 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
1309 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
1311 * Now either this guy is our listener or it's the
1312 * connector. If it is the one that issued the connect, then
1313 * it's only chance is to be the first TCB in the list. If
1314 * it is the acceptor, then do the special_lookup to hash
1315 * and find the real inp.
1317 if ((inp->sctp_socket) && SCTP_IS_LISTENING(inp)) {
1318 /* to is peer addr, from is my addr */
1319 stcb = sctp_tcb_special_locate(inp_p, remote, local,
1320 netp, inp->def_vrf_id);
1321 if ((stcb != NULL) && (locked_tcb == NULL)) {
1322 /* we have a locked tcb, lower refcount */
1323 SCTP_INP_DECR_REF(inp);
1325 if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
1326 SCTP_INP_RLOCK(locked_tcb->sctp_ep);
1327 SCTP_TCB_LOCK(locked_tcb);
1328 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1329 SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
1331 SCTP_INP_INFO_RUNLOCK();
1334 SCTP_INP_WLOCK(inp);
1335 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1338 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1342 SCTP_TCB_LOCK(stcb);
1344 if (stcb->rport != rport) {
1345 /* remote port does not match. */
1346 SCTP_TCB_UNLOCK(stcb);
1349 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1350 SCTP_TCB_UNLOCK(stcb);
1353 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1354 SCTP_TCB_UNLOCK(stcb);
1357 /* now look at the list of remote addresses */
1358 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1360 if (net == (TAILQ_NEXT(net, sctp_next))) {
1361 panic("Corrupt net list");
1364 if (net->ro._l_addr.sa.sa_family !=
1365 remote->sa_family) {
1366 /* not the same family */
1369 switch (remote->sa_family) {
1373 struct sockaddr_in *sin,
1376 sin = (struct sockaddr_in *)
1378 rsin = (struct sockaddr_in *)remote;
1379 if (sin->sin_addr.s_addr ==
1380 rsin->sin_addr.s_addr) {
1385 if (locked_tcb == NULL) {
1386 SCTP_INP_DECR_REF(inp);
1387 } else if (locked_tcb != stcb) {
1388 SCTP_TCB_LOCK(locked_tcb);
1391 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1394 SCTP_INP_WUNLOCK(inp);
1395 SCTP_INP_INFO_RUNLOCK();
1404 struct sockaddr_in6 *sin6,
1407 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1408 rsin6 = (struct sockaddr_in6 *)remote;
1409 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1415 if (locked_tcb == NULL) {
1416 SCTP_INP_DECR_REF(inp);
1417 } else if (locked_tcb != stcb) {
1418 SCTP_TCB_LOCK(locked_tcb);
1421 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1423 SCTP_INP_WUNLOCK(inp);
1424 SCTP_INP_INFO_RUNLOCK();
1435 SCTP_TCB_UNLOCK(stcb);
1438 SCTP_INP_WLOCK(inp);
1439 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1442 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport,
1443 inp->sctp_hashmark)];
1444 LIST_FOREACH(stcb, head, sctp_tcbhash) {
1445 if (stcb->rport != rport) {
1446 /* remote port does not match */
1449 SCTP_TCB_LOCK(stcb);
1450 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1451 SCTP_TCB_UNLOCK(stcb);
1454 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1455 SCTP_TCB_UNLOCK(stcb);
1458 /* now look at the list of remote addresses */
1459 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1461 if (net == (TAILQ_NEXT(net, sctp_next))) {
1462 panic("Corrupt net list");
1465 if (net->ro._l_addr.sa.sa_family !=
1466 remote->sa_family) {
1467 /* not the same family */
1470 switch (remote->sa_family) {
1474 struct sockaddr_in *sin,
1477 sin = (struct sockaddr_in *)
1479 rsin = (struct sockaddr_in *)remote;
1480 if (sin->sin_addr.s_addr ==
1481 rsin->sin_addr.s_addr) {
1486 if (locked_tcb == NULL) {
1487 SCTP_INP_DECR_REF(inp);
1488 } else if (locked_tcb != stcb) {
1489 SCTP_TCB_LOCK(locked_tcb);
1492 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1494 SCTP_INP_WUNLOCK(inp);
1495 SCTP_INP_INFO_RUNLOCK();
1504 struct sockaddr_in6 *sin6,
1507 sin6 = (struct sockaddr_in6 *)
1509 rsin6 = (struct sockaddr_in6 *)remote;
1510 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1516 if (locked_tcb == NULL) {
1517 SCTP_INP_DECR_REF(inp);
1518 } else if (locked_tcb != stcb) {
1519 SCTP_TCB_LOCK(locked_tcb);
1522 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1524 SCTP_INP_WUNLOCK(inp);
1525 SCTP_INP_INFO_RUNLOCK();
1536 SCTP_TCB_UNLOCK(stcb);
1540 /* clean up for returning null */
1542 SCTP_TCB_LOCK(locked_tcb);
1543 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1545 SCTP_INP_WUNLOCK(inp);
1546 SCTP_INP_INFO_RUNLOCK();
1553 * Find an association for a specific endpoint using the association id given
1554 * out in the COMM_UP notification
1557 sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1560 * Use my the assoc_id to find a endpoint
1562 struct sctpasochead *head;
1563 struct sctp_tcb *stcb;
1567 SCTP_PRINTF("TSNH ep_associd\n");
1570 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1571 SCTP_PRINTF("TSNH ep_associd0\n");
1574 id = (uint32_t)asoc_id;
1575 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
1577 /* invalid id TSNH */
1578 SCTP_PRINTF("TSNH ep_associd1\n");
1581 LIST_FOREACH(stcb, head, sctp_tcbasocidhash) {
1582 if (stcb->asoc.assoc_id == id) {
1583 if (inp != stcb->sctp_ep) {
1585 * some other guy has the same id active (id
1588 SCTP_PRINTF("TSNH ep_associd2\n");
1591 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1595 SCTP_TCB_LOCK(stcb);
1605 sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1607 struct sctp_tcb *stcb;
1609 SCTP_INP_RLOCK(inp);
1610 stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
1611 SCTP_INP_RUNLOCK(inp);
1617 * Endpoint probe expects that the INP_INFO is locked.
1619 static struct sctp_inpcb *
1620 sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head,
1621 uint16_t lport, uint32_t vrf_id)
1623 struct sctp_inpcb *inp;
1624 struct sctp_laddr *laddr;
1626 struct sockaddr_in *sin;
1629 struct sockaddr_in6 *sin6;
1630 struct sockaddr_in6 *intf_addr6;
1640 switch (nam->sa_family) {
1643 sin = (struct sockaddr_in *)nam;
1648 sin6 = (struct sockaddr_in6 *)nam;
1652 /* unsupported family */
1659 LIST_FOREACH(inp, head, sctp_hash) {
1660 SCTP_INP_RLOCK(inp);
1661 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1662 SCTP_INP_RUNLOCK(inp);
1665 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) &&
1666 (inp->sctp_lport == lport)) {
1668 switch (nam->sa_family) {
1671 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1672 SCTP_IPV6_V6ONLY(inp)) {
1674 * IPv4 on a IPv6 socket with ONLY
1677 SCTP_INP_RUNLOCK(inp);
1680 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
1681 &sin->sin_addr) != 0) {
1682 SCTP_INP_RUNLOCK(inp);
1690 * A V6 address and the endpoint is NOT
1693 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
1694 SCTP_INP_RUNLOCK(inp);
1697 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
1698 &sin6->sin6_addr) != 0) {
1699 SCTP_INP_RUNLOCK(inp);
1707 /* does a VRF id match? */
1709 if (inp->def_vrf_id == vrf_id)
1712 SCTP_INP_RUNLOCK(inp);
1717 SCTP_INP_RUNLOCK(inp);
1719 switch (nam->sa_family) {
1722 if (sin->sin_addr.s_addr == INADDR_ANY) {
1723 /* Can't hunt for one that has no address specified */
1730 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1731 /* Can't hunt for one that has no address specified */
1740 * ok, not bound to all so see if we can find a EP bound to this
1743 LIST_FOREACH(inp, head, sctp_hash) {
1744 SCTP_INP_RLOCK(inp);
1745 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1746 SCTP_INP_RUNLOCK(inp);
1749 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
1750 SCTP_INP_RUNLOCK(inp);
1754 * Ok this could be a likely candidate, look at all of its
1757 if (inp->sctp_lport != lport) {
1758 SCTP_INP_RUNLOCK(inp);
1761 /* does a VRF id match? */
1763 if (inp->def_vrf_id == vrf_id)
1767 SCTP_INP_RUNLOCK(inp);
1770 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1771 if (laddr->ifa == NULL) {
1772 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
1776 SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ",
1777 (void *)laddr->ifa);
1778 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1779 SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n");
1782 if (laddr->ifa->address.sa.sa_family == nam->sa_family) {
1783 /* possible, see if it matches */
1784 switch (nam->sa_family) {
1787 if (sin->sin_addr.s_addr ==
1788 laddr->ifa->address.sin.sin_addr.s_addr) {
1789 SCTP_INP_RUNLOCK(inp);
1796 intf_addr6 = &laddr->ifa->address.sin6;
1797 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1799 SCTP_INP_RUNLOCK(inp);
1807 SCTP_INP_RUNLOCK(inp);
1813 static struct sctp_inpcb *
1814 sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
1816 struct sctppcbhead *head;
1817 struct sctp_inpcb *t_inp;
1820 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1821 SCTP_BASE_INFO(hashmark))];
1822 LIST_FOREACH(t_inp, head, sctp_hash) {
1823 if (t_inp->sctp_lport != lport) {
1826 /* is it in the VRF in question */
1828 if (t_inp->def_vrf_id == vrf_id)
1833 /* This one is in use. */
1834 /* check the v6/v4 binding issue */
1835 if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1836 SCTP_IPV6_V6ONLY(t_inp)) {
1837 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1838 /* collision in V6 space */
1841 /* inp is BOUND_V4 no conflict */
1844 } else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1845 /* t_inp is bound v4 and v6, conflict always */
1848 /* t_inp is bound only V4 */
1849 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1850 SCTP_IPV6_V6ONLY(inp)) {
1854 /* else fall through to conflict */
1863 sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
1865 /* For 1-2-1 with port reuse */
1866 struct sctppcbhead *head;
1867 struct sctp_inpcb *tinp, *ninp;
1869 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
1870 /* only works with port reuse on */
1873 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) {
1876 SCTP_INP_RUNLOCK(inp);
1877 SCTP_INP_INFO_WLOCK();
1878 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport,
1879 SCTP_BASE_INFO(hashmark))];
1880 /* Kick out all non-listeners to the TCP hash */
1881 LIST_FOREACH_SAFE(tinp, head, sctp_hash, ninp) {
1882 if (tinp->sctp_lport != inp->sctp_lport) {
1885 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1888 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
1891 if (SCTP_IS_LISTENING(tinp)) {
1894 SCTP_INP_WLOCK(tinp);
1895 LIST_REMOVE(tinp, sctp_hash);
1896 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))];
1897 tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
1898 LIST_INSERT_HEAD(head, tinp, sctp_hash);
1899 SCTP_INP_WUNLOCK(tinp);
1901 SCTP_INP_WLOCK(inp);
1902 /* Pull from where he was */
1903 LIST_REMOVE(inp, sctp_hash);
1904 inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL;
1905 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))];
1906 LIST_INSERT_HEAD(head, inp, sctp_hash);
1907 SCTP_INP_WUNLOCK(inp);
1908 SCTP_INP_RLOCK(inp);
1909 SCTP_INP_INFO_WUNLOCK();
1915 sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock,
1919 * First we check the hash table to see if someone has this port
1920 * bound with just the port.
1922 struct sctp_inpcb *inp;
1923 struct sctppcbhead *head;
1927 struct sockaddr_in *sin;
1930 struct sockaddr_in6 *sin6;
1933 switch (nam->sa_family) {
1936 sin = (struct sockaddr_in *)nam;
1937 lport = sin->sin_port;
1942 sin6 = (struct sockaddr_in6 *)nam;
1943 lport = sin6->sin6_port;
1950 * I could cheat here and just cast to one of the types but we will
1951 * do it right. It also provides the check against an Unsupported
1954 /* Find the head of the ALLADDR chain */
1955 if (have_lock == 0) {
1956 SCTP_INP_INFO_RLOCK();
1958 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1959 SCTP_BASE_INFO(hashmark))];
1960 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1963 * If the TCP model exists it could be that the main listening
1964 * endpoint is gone but there still exists a connected socket for
1965 * this guy. If so we can return the first one that we find. This
1966 * may NOT be the correct one so the caller should be wary on the
1967 * returned INP. Currently the only caller that sets find_tcp_pool
1968 * is in bindx where we are verifying that a user CAN bind the
1969 * address. He either has bound it already, or someone else has, or
1970 * its open to bind, so this is good enough.
1972 if (inp == NULL && find_tcp_pool) {
1973 for (i = 0; i < SCTP_BASE_INFO(hashtcpmark) + 1; i++) {
1974 head = &SCTP_BASE_INFO(sctp_tcpephash)[i];
1975 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1982 SCTP_INP_INCR_REF(inp);
1984 if (have_lock == 0) {
1985 SCTP_INP_INFO_RUNLOCK();
1992 * Find an association for an endpoint with the pointer to whom you want to
1993 * send to and the endpoint pointer. The address can be IPv4 or IPv6. We may
1994 * need to change the *to to some other struct like a mbuf...
1997 sctp_findassociation_addr_sa(struct sockaddr *from, struct sockaddr *to,
1998 struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool,
2001 struct sctp_inpcb *inp = NULL;
2002 struct sctp_tcb *stcb;
2004 SCTP_INP_INFO_RLOCK();
2005 if (find_tcp_pool) {
2006 if (inp_p != NULL) {
2007 stcb = sctp_tcb_special_locate(inp_p, from, to, netp,
2010 stcb = sctp_tcb_special_locate(&inp, from, to, netp,
2014 SCTP_INP_INFO_RUNLOCK();
2018 inp = sctp_pcb_findep(to, 0, 1, vrf_id);
2019 if (inp_p != NULL) {
2022 SCTP_INP_INFO_RUNLOCK();
2027 * ok, we have an endpoint, now lets find the assoc for it (if any)
2028 * we now place the source address or from in the to of the find
2029 * endpoint call. Since in reality this chain is used from the
2030 * inbound packet side.
2032 if (inp_p != NULL) {
2033 stcb = sctp_findassociation_ep_addr(inp_p, from, netp, to,
2036 stcb = sctp_findassociation_ep_addr(&inp, from, netp, to,
2044 * This routine will grub through the mbuf that is a INIT or INIT-ACK and
2045 * find all addresses that the sender has specified in any address list. Each
2046 * address will be used to lookup the TCB and see if one exits.
2048 static struct sctp_tcb *
2049 sctp_findassociation_special_addr(struct mbuf *m, int offset,
2050 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp,
2051 struct sockaddr *dst)
2053 struct sctp_paramhdr *phdr, param_buf;
2054 #if defined(INET) || defined(INET6)
2055 struct sctp_tcb *stcb;
2060 struct sockaddr_in sin4;
2063 struct sockaddr_in6 sin6;
2067 memset(&sin4, 0, sizeof(sin4));
2068 sin4.sin_len = sizeof(sin4);
2069 sin4.sin_family = AF_INET;
2070 sin4.sin_port = sh->src_port;
2073 memset(&sin6, 0, sizeof(sin6));
2074 sin6.sin6_len = sizeof(sin6);
2075 sin6.sin6_family = AF_INET6;
2076 sin6.sin6_port = sh->src_port;
2079 offset += sizeof(struct sctp_init_chunk);
2081 phdr = sctp_get_next_param(m, offset, ¶m_buf, sizeof(param_buf));
2082 while (phdr != NULL) {
2083 /* now we must see if we want the parameter */
2084 #if defined(INET) || defined(INET6)
2085 ptype = ntohs(phdr->param_type);
2087 plen = ntohs(phdr->param_length);
2092 if (ptype == SCTP_IPV4_ADDRESS &&
2093 plen == sizeof(struct sctp_ipv4addr_param)) {
2094 /* Get the rest of the address */
2095 struct sctp_ipv4addr_param ip4_param, *p4;
2097 phdr = sctp_get_next_param(m, offset,
2098 (struct sctp_paramhdr *)&ip4_param, sizeof(ip4_param));
2102 p4 = (struct sctp_ipv4addr_param *)phdr;
2103 memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr));
2105 stcb = sctp_findassociation_ep_addr(inp_p,
2106 (struct sockaddr *)&sin4, netp, dst, NULL);
2113 if (ptype == SCTP_IPV6_ADDRESS &&
2114 plen == sizeof(struct sctp_ipv6addr_param)) {
2115 /* Get the rest of the address */
2116 struct sctp_ipv6addr_param ip6_param, *p6;
2118 phdr = sctp_get_next_param(m, offset,
2119 (struct sctp_paramhdr *)&ip6_param, sizeof(ip6_param));
2123 p6 = (struct sctp_ipv6addr_param *)phdr;
2124 memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr));
2126 stcb = sctp_findassociation_ep_addr(inp_p,
2127 (struct sockaddr *)&sin6, netp, dst, NULL);
2133 offset += SCTP_SIZE32(plen);
2134 phdr = sctp_get_next_param(m, offset, ¶m_buf,
2140 static struct sctp_tcb *
2141 sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag,
2142 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport,
2143 uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
2146 * Use my vtag to hash. If we find it we then verify the source addr
2147 * is in the assoc. If all goes well we save a bit on rec of a
2150 struct sctpasochead *head;
2151 struct sctp_nets *net;
2152 struct sctp_tcb *stcb;
2154 SCTP_INP_INFO_RLOCK();
2155 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag,
2156 SCTP_BASE_INFO(hashasocmark))];
2157 LIST_FOREACH(stcb, head, sctp_asocs) {
2158 SCTP_INP_RLOCK(stcb->sctp_ep);
2159 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
2160 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2163 if (stcb->sctp_ep->def_vrf_id != vrf_id) {
2164 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2167 SCTP_TCB_LOCK(stcb);
2168 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2169 if (stcb->asoc.my_vtag == vtag) {
2171 if (stcb->rport != rport) {
2172 SCTP_TCB_UNLOCK(stcb);
2175 if (stcb->sctp_ep->sctp_lport != lport) {
2176 SCTP_TCB_UNLOCK(stcb);
2179 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
2180 SCTP_TCB_UNLOCK(stcb);
2183 /* RRS:Need toaddr check here */
2184 if (sctp_does_stcb_own_this_addr(stcb, to) == 0) {
2185 /* Endpoint does not own this address */
2186 SCTP_TCB_UNLOCK(stcb);
2191 * If we have both vtags that's all we match
2194 if (stcb->asoc.peer_vtag == remote_tag) {
2196 * If both tags match we consider it
2197 * conclusive and check NO
2198 * source/destination addresses
2203 if (skip_src_check) {
2206 *netp = sctp_findnet(stcb, from);
2208 *netp = NULL; /* unknown */
2211 *inp_p = stcb->sctp_ep;
2212 SCTP_INP_INFO_RUNLOCK();
2215 net = sctp_findnet(stcb, from);
2219 SCTP_STAT_INCR(sctps_vtagexpress);
2220 *inp_p = stcb->sctp_ep;
2221 SCTP_INP_INFO_RUNLOCK();
2225 * not him, this should only happen in rare
2226 * cases so I peg it.
2228 SCTP_STAT_INCR(sctps_vtagbogus);
2231 SCTP_TCB_UNLOCK(stcb);
2233 SCTP_INP_INFO_RUNLOCK();
2239 * Find an association with the pointer to the inbound IP packet. This can be
2240 * a IPv4 or IPv6 packet.
2243 sctp_findassociation_addr(struct mbuf *m, int offset,
2244 struct sockaddr *src, struct sockaddr *dst,
2245 struct sctphdr *sh, struct sctp_chunkhdr *ch,
2246 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2248 struct sctp_tcb *stcb;
2249 struct sctp_inpcb *inp;
2252 /* we only go down this path if vtag is non-zero */
2253 stcb = sctp_findassoc_by_vtag(src, dst, ntohl(sh->v_tag),
2254 inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0);
2261 stcb = sctp_findassociation_addr_sa(src, dst, inp_p, netp,
2265 stcb = sctp_findassociation_addr_sa(src, dst, &inp, netp,
2268 SCTPDBG(SCTP_DEBUG_PCB1, "stcb:%p inp:%p\n", (void *)stcb, (void *)inp);
2269 if (stcb == NULL && inp) {
2270 /* Found a EP but not this address */
2271 if ((ch->chunk_type == SCTP_INITIATION) ||
2272 (ch->chunk_type == SCTP_INITIATION_ACK)) {
2274 * special hook, we do NOT return linp or an
2275 * association that is linked to an existing
2276 * association that is under the TCP pool (i.e. no
2277 * listener exists). The endpoint finding routine
2278 * will always find a listener before examining the
2281 if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
2287 stcb = sctp_findassociation_special_addr(m,
2288 offset, sh, &inp, netp, dst);
2289 if (inp_p != NULL) {
2294 SCTPDBG(SCTP_DEBUG_PCB1, "stcb is %p\n", (void *)stcb);
2299 * lookup an association by an ASCONF lookup address.
2300 * if the lookup address is 0.0.0.0 or ::0, use the vtag to do the lookup
2303 sctp_findassociation_ep_asconf(struct mbuf *m, int offset,
2304 struct sockaddr *dst, struct sctphdr *sh,
2305 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2307 struct sctp_tcb *stcb;
2308 union sctp_sockstore remote_store;
2309 struct sctp_paramhdr param_buf, *phdr;
2311 int zero_address = 0;
2313 struct sockaddr_in *sin;
2316 struct sockaddr_in6 *sin6;
2319 memset(&remote_store, 0, sizeof(remote_store));
2320 phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk),
2321 ¶m_buf, sizeof(struct sctp_paramhdr));
2323 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n",
2327 ptype = (int)((uint32_t)ntohs(phdr->param_type));
2328 /* get the correlation address */
2331 case SCTP_IPV6_ADDRESS:
2333 /* ipv6 address param */
2334 struct sctp_ipv6addr_param *p6, p6_buf;
2336 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) {
2339 p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m,
2340 offset + sizeof(struct sctp_asconf_chunk),
2341 &p6_buf.ph, sizeof(p6_buf));
2343 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n",
2347 sin6 = &remote_store.sin6;
2348 sin6->sin6_family = AF_INET6;
2349 sin6->sin6_len = sizeof(*sin6);
2350 sin6->sin6_port = sh->src_port;
2351 memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr));
2352 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
2358 case SCTP_IPV4_ADDRESS:
2360 /* ipv4 address param */
2361 struct sctp_ipv4addr_param *p4, p4_buf;
2363 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) {
2366 p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m,
2367 offset + sizeof(struct sctp_asconf_chunk),
2368 &p4_buf.ph, sizeof(p4_buf));
2370 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n",
2374 sin = &remote_store.sin;
2375 sin->sin_family = AF_INET;
2376 sin->sin_len = sizeof(*sin);
2377 sin->sin_port = sh->src_port;
2378 memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr));
2379 if (sin->sin_addr.s_addr == INADDR_ANY)
2385 /* invalid address param type */
2390 stcb = sctp_findassoc_by_vtag(NULL, dst, ntohl(sh->v_tag), inp_p,
2391 netp, sh->src_port, sh->dest_port, 1, vrf_id, 0);
2393 SCTP_INP_DECR_REF(*inp_p);
2396 stcb = sctp_findassociation_ep_addr(inp_p,
2397 &remote_store.sa, netp,
2405 * allocate a sctp_inpcb and setup a temporary binding to a port/all
2406 * addresses. This way if we don't get a bind we by default pick a ephemeral
2407 * port with all addresses bound.
2410 sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
2413 * we get called when a new endpoint starts up. We need to allocate
2414 * the sctp_inpcb structure from the zone and init it. Mark it as
2415 * unbound and find a port that we can use as an ephemeral with
2416 * INADDR_ANY. If the user binds later no problem we can then add in
2417 * the specific addresses. And setup the default parameters for the
2421 struct sctp_inpcb *inp;
2423 struct timeval time;
2424 sctp_sharedkey_t *null_key;
2428 SCTP_INP_INFO_WLOCK();
2429 inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb);
2431 SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n");
2432 SCTP_INP_INFO_WUNLOCK();
2433 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2437 memset(inp, 0, sizeof(*inp));
2439 /* bump generations */
2440 /* setup socket pointers */
2441 inp->sctp_socket = so;
2442 inp->ip_inp.inp.inp_socket = so;
2443 inp->ip_inp.inp.inp_cred = crhold(so->so_cred);
2445 if (INP_SOCKAF(so) == AF_INET6) {
2446 if (MODULE_GLOBAL(ip6_auto_flowlabel)) {
2447 inp->ip_inp.inp.inp_flags |= IN6P_AUTOFLOWLABEL;
2449 if (MODULE_GLOBAL(ip6_v6only)) {
2450 inp->ip_inp.inp.inp_flags |= IN6P_IPV6_V6ONLY;
2454 inp->sctp_associd_counter = 1;
2455 inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT;
2456 inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
2458 inp->sctp_cmt_on_off = SCTP_BASE_SYSCTL(sctp_cmt_on_off);
2459 inp->ecn_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_ecn_enable);
2460 inp->prsctp_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_pr_enable);
2461 inp->auth_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_auth_enable);
2462 inp->asconf_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_asconf_enable);
2463 inp->reconfig_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_reconfig_enable);
2464 inp->nrsack_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_nrsack_enable);
2465 inp->pktdrop_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_pktdrop_enable);
2466 inp->idata_supported = 0;
2468 inp->fibnum = so->so_fibnum;
2469 /* init the small hash table we use to track asocid <-> tcb */
2470 inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark);
2471 if (inp->sctp_asocidhash == NULL) {
2472 crfree(inp->ip_inp.inp.inp_cred);
2473 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2474 SCTP_INP_INFO_WUNLOCK();
2477 SCTP_INCR_EP_COUNT();
2478 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
2479 SCTP_INP_INFO_WUNLOCK();
2481 so->so_pcb = (caddr_t)inp;
2483 if (SCTP_SO_TYPE(so) == SOCK_SEQPACKET) {
2484 /* UDP style socket */
2485 inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
2486 SCTP_PCB_FLAGS_UNBOUND);
2487 /* Be sure it is NON-BLOCKING IO for UDP */
2488 /* SCTP_SET_SO_NBIO(so); */
2489 } else if (SCTP_SO_TYPE(so) == SOCK_STREAM) {
2490 /* TCP style socket */
2491 inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
2492 SCTP_PCB_FLAGS_UNBOUND);
2493 /* Be sure we have blocking IO by default */
2495 SCTP_CLEAR_SO_NBIO(so);
2499 * unsupported socket type (RAW, etc)- in case we missed it
2502 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
2504 crfree(inp->ip_inp.inp.inp_cred);
2505 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2506 return (EOPNOTSUPP);
2508 if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) {
2509 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2510 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2511 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) {
2512 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2513 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2514 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) {
2515 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2516 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2518 inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize),
2519 &inp->sctp_hashmark);
2520 if (inp->sctp_tcbhash == NULL) {
2521 SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
2522 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2524 crfree(inp->ip_inp.inp.inp_cred);
2525 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2528 inp->def_vrf_id = vrf_id;
2530 SCTP_INP_INFO_WLOCK();
2531 SCTP_INP_LOCK_INIT(inp);
2532 INP_LOCK_INIT(&inp->ip_inp.inp, "inp", "sctpinp");
2533 SCTP_INP_READ_INIT(inp);
2534 SCTP_ASOC_CREATE_LOCK_INIT(inp);
2535 /* lock the new ep */
2536 SCTP_INP_WLOCK(inp);
2538 /* add it to the info area */
2539 LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list);
2540 SCTP_INP_INFO_WUNLOCK();
2542 TAILQ_INIT(&inp->read_queue);
2543 LIST_INIT(&inp->sctp_addr_list);
2545 LIST_INIT(&inp->sctp_asoc_list);
2547 #ifdef SCTP_TRACK_FREED_ASOCS
2549 LIST_INIT(&inp->sctp_asoc_free_list);
2551 /* Init the timer structure for signature change */
2552 SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer);
2553 inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE;
2555 /* now init the actual endpoint default data */
2558 /* setup the base timeout information */
2559 m->sctp_timeoutticks[SCTP_TIMER_SEND] = SEC_TO_TICKS(SCTP_SEND_SEC); /* needed ? */
2560 m->sctp_timeoutticks[SCTP_TIMER_INIT] = SEC_TO_TICKS(SCTP_INIT_SEC); /* needed ? */
2561 m->sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default));
2562 m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default));
2563 m->sctp_timeoutticks[SCTP_TIMER_PMTU] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default));
2564 m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default));
2565 m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default));
2566 /* all max/min max are in ms */
2567 m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default);
2568 m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default);
2569 m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default);
2570 m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default);
2571 m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default);
2572 m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default);
2573 m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default);
2574 m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default);
2575 m->def_net_pf_threshold = SCTP_BASE_SYSCTL(sctp_path_pf_threshold);
2576 m->sctp_sws_sender = SCTP_SWS_SENDER_DEF;
2577 m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF;
2578 m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default);
2579 m->fr_max_burst = SCTP_BASE_SYSCTL(sctp_fr_max_burst_default);
2581 m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module);
2582 m->sctp_default_ss_module = SCTP_BASE_SYSCTL(sctp_default_ss_module);
2583 m->max_open_streams_intome = SCTP_BASE_SYSCTL(sctp_nr_incoming_streams_default);
2584 /* number of streams to pre-open on a association */
2585 m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default);
2588 /* Add adaptation cookie */
2589 m->adaptation_layer_indicator = 0;
2590 m->adaptation_layer_indicator_provided = 0;
2592 /* seed random number generator */
2593 m->random_counter = 1;
2594 m->store_at = SCTP_SIGNATURE_SIZE;
2595 SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers));
2596 sctp_fill_random_store(m);
2598 /* Minimum cookie size */
2599 m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) +
2600 sizeof(struct sctp_state_cookie);
2601 m->size_of_a_cookie += SCTP_SIGNATURE_SIZE;
2603 /* Setup the initial secret */
2604 (void)SCTP_GETTIME_TIMEVAL(&time);
2605 m->time_of_secret_change = time.tv_sec;
2607 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
2608 m->secret_key[0][i] = sctp_select_initial_TSN(m);
2610 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
2612 /* How long is a cookie good for ? */
2613 m->def_cookie_life = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default));
2615 * Initialize authentication parameters
2617 m->local_hmacs = sctp_default_supported_hmaclist();
2618 m->local_auth_chunks = sctp_alloc_chunklist();
2619 if (inp->asconf_supported) {
2620 sctp_auth_add_chunk(SCTP_ASCONF, m->local_auth_chunks);
2621 sctp_auth_add_chunk(SCTP_ASCONF_ACK, m->local_auth_chunks);
2623 m->default_dscp = 0;
2625 m->default_flowlabel = 0;
2627 m->port = 0; /* encapsulation disabled by default */
2628 LIST_INIT(&m->shared_keys);
2629 /* add default NULL key as key id 0 */
2630 null_key = sctp_alloc_sharedkey();
2631 sctp_insert_sharedkey(&m->shared_keys, null_key);
2632 SCTP_INP_WUNLOCK(inp);
2633 #ifdef SCTP_LOG_CLOSING
2634 sctp_log_closing(inp, NULL, 12);
2641 sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp,
2642 struct sctp_tcb *stcb)
2644 struct sctp_nets *net;
2645 uint16_t lport, rport;
2646 struct sctppcbhead *head;
2647 struct sctp_laddr *laddr, *oladdr;
2649 atomic_add_int(&stcb->asoc.refcnt, 1);
2650 SCTP_TCB_UNLOCK(stcb);
2651 SCTP_INP_INFO_WLOCK();
2652 SCTP_INP_WLOCK(old_inp);
2653 SCTP_INP_WLOCK(new_inp);
2654 SCTP_TCB_LOCK(stcb);
2655 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2657 new_inp->sctp_ep.time_of_secret_change =
2658 old_inp->sctp_ep.time_of_secret_change;
2659 memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key,
2660 sizeof(old_inp->sctp_ep.secret_key));
2661 new_inp->sctp_ep.current_secret_number =
2662 old_inp->sctp_ep.current_secret_number;
2663 new_inp->sctp_ep.last_secret_number =
2664 old_inp->sctp_ep.last_secret_number;
2665 new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie;
2667 /* make it so new data pours into the new socket */
2668 stcb->sctp_socket = new_inp->sctp_socket;
2669 stcb->sctp_ep = new_inp;
2671 /* Copy the port across */
2672 lport = new_inp->sctp_lport = old_inp->sctp_lport;
2673 rport = stcb->rport;
2674 /* Pull the tcb from the old association */
2675 LIST_REMOVE(stcb, sctp_tcbhash);
2676 LIST_REMOVE(stcb, sctp_tcblist);
2677 if (stcb->asoc.in_asocid_hash) {
2678 LIST_REMOVE(stcb, sctp_tcbasocidhash);
2680 /* Now insert the new_inp into the TCP connected hash */
2681 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
2683 LIST_INSERT_HEAD(head, new_inp, sctp_hash);
2684 /* Its safe to access */
2685 new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
2687 /* Now move the tcb into the endpoint list */
2688 LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist);
2690 * Question, do we even need to worry about the ep-hash since we
2691 * only have one connection? Probably not :> so lets get rid of it
2692 * and not suck up any kernel memory in that.
2694 if (stcb->asoc.in_asocid_hash) {
2695 struct sctpasochead *lhd;
2697 lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id,
2698 new_inp->hashasocidmark)];
2699 LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash);
2701 /* Ok. Let's restart timer. */
2702 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2703 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp,
2707 SCTP_INP_INFO_WUNLOCK();
2708 if (new_inp->sctp_tcbhash != NULL) {
2709 SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark);
2710 new_inp->sctp_tcbhash = NULL;
2712 if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2713 /* Subset bound, so copy in the laddr list from the old_inp */
2714 LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) {
2715 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2716 if (laddr == NULL) {
2718 * Gak, what can we do? This assoc is really
2719 * HOSED. We probably should send an abort
2722 SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n");
2725 SCTP_INCR_LADDR_COUNT();
2726 memset(laddr, 0, sizeof(*laddr));
2727 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2728 laddr->ifa = oladdr->ifa;
2729 atomic_add_int(&laddr->ifa->refcount, 1);
2730 LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr,
2732 new_inp->laddr_count++;
2733 if (oladdr == stcb->asoc.last_used_address) {
2734 stcb->asoc.last_used_address = laddr;
2739 * Now any running timers need to be adjusted since we really don't
2740 * care if they are running or not just blast in the new_inp into
2744 stcb->asoc.dack_timer.ep = (void *)new_inp;
2745 stcb->asoc.asconf_timer.ep = (void *)new_inp;
2746 stcb->asoc.strreset_timer.ep = (void *)new_inp;
2747 stcb->asoc.shut_guard_timer.ep = (void *)new_inp;
2748 stcb->asoc.autoclose_timer.ep = (void *)new_inp;
2749 stcb->asoc.delayed_event_timer.ep = (void *)new_inp;
2750 stcb->asoc.delete_prim_timer.ep = (void *)new_inp;
2751 /* now what about the nets? */
2752 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2753 net->pmtu_timer.ep = (void *)new_inp;
2754 net->hb_timer.ep = (void *)new_inp;
2755 net->rxt_timer.ep = (void *)new_inp;
2757 SCTP_INP_WUNLOCK(new_inp);
2758 SCTP_INP_WUNLOCK(old_inp);
2762 * insert an laddr entry with the given ifa for the desired list
2765 sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
2767 struct sctp_laddr *laddr;
2769 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2770 if (laddr == NULL) {
2771 /* out of memory? */
2772 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2775 SCTP_INCR_LADDR_COUNT();
2776 memset(laddr, 0, sizeof(*laddr));
2777 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2779 laddr->action = act;
2780 atomic_add_int(&ifa->refcount, 1);
2782 LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr);
2788 * Remove an laddr entry from the local address list (on an assoc)
2791 sctp_remove_laddr(struct sctp_laddr *laddr)
2794 /* remove from the list */
2795 LIST_REMOVE(laddr, sctp_nxt_addr);
2796 sctp_free_ifa(laddr->ifa);
2797 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr);
2798 SCTP_DECR_LADDR_COUNT();
2803 /* sctp_ifap is used to bypass normal local address validation checks */
2805 sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
2806 struct sctp_ifa *sctp_ifap, struct thread *p)
2808 /* bind a ep to a socket address */
2809 struct sctppcbhead *head;
2810 struct sctp_inpcb *inp, *inp_tmp;
2811 struct inpcb *ip_inp;
2812 int port_reuse_active = 0;
2820 inp = (struct sctp_inpcb *)so->so_pcb;
2821 ip_inp = (struct inpcb *)so->so_pcb;
2824 SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port: %d\n",
2825 ntohs(((struct sockaddr_in *)addr)->sin_port));
2826 SCTPDBG(SCTP_DEBUG_PCB1, "Addr: ");
2827 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
2830 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2831 /* already did a bind, subsequent binds NOT allowed ! */
2832 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2837 panic("null proc/thread");
2840 switch (addr->sa_family) {
2844 struct sockaddr_in *sin;
2846 /* IPV6_V6ONLY socket? */
2847 if (SCTP_IPV6_V6ONLY(ip_inp)) {
2848 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2851 if (addr->sa_len != sizeof(*sin)) {
2852 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2856 sin = (struct sockaddr_in *)addr;
2857 lport = sin->sin_port;
2859 * For LOOPBACK the prison_local_ip4() call
2860 * will transmute the ip address to the
2863 if (p && (error = prison_local_ip4(p->td_ucred, &sin->sin_addr)) != 0) {
2864 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2867 if (sin->sin_addr.s_addr != INADDR_ANY) {
2877 * Only for pure IPv6 Address. (No IPv4
2880 struct sockaddr_in6 *sin6;
2882 sin6 = (struct sockaddr_in6 *)addr;
2884 if (addr->sa_len != sizeof(*sin6)) {
2885 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2888 lport = sin6->sin6_port;
2890 * For LOOPBACK the prison_local_ip6() call
2891 * will transmute the ipv6 address to the
2894 if (p && (error = prison_local_ip6(p->td_ucred, &sin6->sin6_addr,
2895 (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
2896 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2899 if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2901 /* KAME hack: embed scopeid */
2902 if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
2903 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2907 /* this must be cleared for ifa_ifwithaddr() */
2908 sin6->sin6_scope_id = 0;
2913 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EAFNOSUPPORT);
2914 return (EAFNOSUPPORT);
2917 SCTP_INP_INFO_WLOCK();
2918 SCTP_INP_WLOCK(inp);
2919 /* Setup a vrf_id to be the default for the non-bind-all case. */
2920 vrf_id = inp->def_vrf_id;
2922 /* increase our count due to the unlock we do */
2923 SCTP_INP_INCR_REF(inp);
2926 * Did the caller specify a port? if so we must see if an ep
2927 * already has this one bound.
2929 /* got to be root to get at low ports */
2930 if (ntohs(lport) < IPPORT_RESERVED) {
2931 if ((p != NULL) && ((error =
2932 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2934 SCTP_INP_DECR_REF(inp);
2935 SCTP_INP_WUNLOCK(inp);
2936 SCTP_INP_INFO_WUNLOCK();
2940 SCTP_INP_WUNLOCK(inp);
2942 vrf_id = inp->def_vrf_id;
2943 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2944 if (inp_tmp != NULL) {
2946 * lock guy returned and lower count note
2947 * that we are not bound so inp_tmp should
2948 * NEVER be inp. And it is this inp
2949 * (inp_tmp) that gets the reference bump,
2950 * so we must lower it.
2952 SCTP_INP_DECR_REF(inp_tmp);
2954 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2955 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2957 * Ok, must be one-2-one and
2958 * allowing port re-use
2960 port_reuse_active = 1;
2961 goto continue_anyway;
2963 SCTP_INP_DECR_REF(inp);
2964 SCTP_INP_INFO_WUNLOCK();
2965 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2966 return (EADDRINUSE);
2969 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2970 if (inp_tmp != NULL) {
2972 * lock guy returned and lower count note
2973 * that we are not bound so inp_tmp should
2974 * NEVER be inp. And it is this inp
2975 * (inp_tmp) that gets the reference bump,
2976 * so we must lower it.
2978 SCTP_INP_DECR_REF(inp_tmp);
2980 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2981 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2983 * Ok, must be one-2-one and
2984 * allowing port re-use
2986 port_reuse_active = 1;
2987 goto continue_anyway;
2989 SCTP_INP_DECR_REF(inp);
2990 SCTP_INP_INFO_WUNLOCK();
2991 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2992 return (EADDRINUSE);
2996 SCTP_INP_WLOCK(inp);
2998 /* verify that no lport is not used by a singleton */
2999 if ((port_reuse_active == 0) &&
3000 (inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))) {
3001 /* Sorry someone already has this one bound */
3002 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
3003 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
3004 port_reuse_active = 1;
3006 SCTP_INP_DECR_REF(inp);
3007 SCTP_INP_WUNLOCK(inp);
3008 SCTP_INP_INFO_WUNLOCK();
3009 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3010 return (EADDRINUSE);
3015 uint16_t first, last, candidate;
3019 if (ip_inp->inp_flags & INP_HIGHPORT) {
3020 first = MODULE_GLOBAL(ipport_hifirstauto);
3021 last = MODULE_GLOBAL(ipport_hilastauto);
3022 } else if (ip_inp->inp_flags & INP_LOWPORT) {
3024 priv_check(p, PRIV_NETINET_RESERVEDPORT)
3026 SCTP_INP_DECR_REF(inp);
3027 SCTP_INP_WUNLOCK(inp);
3028 SCTP_INP_INFO_WUNLOCK();
3029 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
3032 first = MODULE_GLOBAL(ipport_lowfirstauto);
3033 last = MODULE_GLOBAL(ipport_lowlastauto);
3035 first = MODULE_GLOBAL(ipport_firstauto);
3036 last = MODULE_GLOBAL(ipport_lastauto);
3045 count = last - first + 1; /* number of candidates */
3046 candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count);
3050 if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) {
3055 SCTP_INP_DECR_REF(inp);
3056 SCTP_INP_WUNLOCK(inp);
3057 SCTP_INP_INFO_WUNLOCK();
3058 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3059 return (EADDRINUSE);
3061 if (candidate == last)
3064 candidate = candidate + 1;
3067 lport = htons(candidate);
3069 SCTP_INP_DECR_REF(inp);
3070 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE |
3071 SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
3073 * this really should not happen. The guy did a non-blocking
3074 * bind and then did a close at the same time.
3076 SCTP_INP_WUNLOCK(inp);
3077 SCTP_INP_INFO_WUNLOCK();
3078 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3081 /* ok we look clear to give out this port, so lets setup the binding */
3083 /* binding to all addresses, so just set in the proper flags */
3084 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL;
3085 /* set the automatic addr changes from kernel flag */
3086 if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) {
3087 sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3088 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3090 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3091 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3093 if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) {
3094 sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3096 sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3099 * set the automatic mobility_base from kernel flag (by
3102 if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) {
3103 sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE);
3104 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3106 sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE);
3107 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3110 * set the automatic mobility_fasthandoff from kernel flag
3113 if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) {
3114 sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF);
3115 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3117 sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF);
3118 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3122 * bind specific, make sure flags is off and add a new
3123 * address structure to the sctp_addr_list inside the ep
3126 * We will need to allocate one and insert it at the head.
3127 * The socketopt call can just insert new addresses in there
3128 * as well. It will also have to do the embed scope kame
3129 * hack too (before adding).
3131 struct sctp_ifa *ifa;
3132 union sctp_sockstore store;
3134 memset(&store, 0, sizeof(store));
3135 switch (addr->sa_family) {
3138 memcpy(&store.sin, addr, sizeof(struct sockaddr_in));
3139 store.sin.sin_port = 0;
3144 memcpy(&store.sin6, addr, sizeof(struct sockaddr_in6));
3145 store.sin6.sin6_port = 0;
3152 * first find the interface with the bound address need to
3153 * zero out the port to find the address! yuck! can't do
3154 * this earlier since need port for sctp_pcb_findep()
3156 if (sctp_ifap != NULL) {
3160 * Note for BSD we hit here always other O/S's will
3161 * pass things in via the sctp_ifap argument
3164 ifa = sctp_find_ifa_by_addr(&store.sa,
3165 vrf_id, SCTP_ADDR_NOT_LOCKED);
3168 /* Can't find an interface with that address */
3169 SCTP_INP_WUNLOCK(inp);
3170 SCTP_INP_INFO_WUNLOCK();
3171 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRNOTAVAIL);
3172 return (EADDRNOTAVAIL);
3175 if (addr->sa_family == AF_INET6) {
3176 /* GAK, more FIXME IFA lock? */
3177 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
3178 /* Can't bind a non-existent addr. */
3179 SCTP_INP_WUNLOCK(inp);
3180 SCTP_INP_INFO_WUNLOCK();
3181 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3186 /* we're not bound all */
3187 inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL;
3188 /* allow bindx() to send ASCONF's for binding changes */
3189 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3190 /* clear automatic addr changes from kernel flag */
3191 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3193 /* add this address to the endpoint list */
3194 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0);
3196 SCTP_INP_WUNLOCK(inp);
3197 SCTP_INP_INFO_WUNLOCK();
3202 /* find the bucket */
3203 if (port_reuse_active) {
3204 /* Put it into tcp 1-2-1 hash */
3205 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))];
3206 inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
3208 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))];
3210 /* put it in the bucket */
3211 LIST_INSERT_HEAD(head, inp, sctp_hash);
3212 SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n",
3213 (void *)head, ntohs(lport), port_reuse_active);
3214 /* set in the port */
3215 inp->sctp_lport = lport;
3217 /* turn off just the unbound flag */
3218 inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
3219 SCTP_INP_WUNLOCK(inp);
3220 SCTP_INP_INFO_WUNLOCK();
3226 sctp_iterator_inp_being_freed(struct sctp_inpcb *inp)
3228 struct sctp_iterator *it, *nit;
3231 * We enter with the only the ITERATOR_LOCK in place and a write
3232 * lock on the inp_info stuff.
3234 it = sctp_it_ctl.cur_it;
3235 if (it && (it->vn != curvnet)) {
3236 /* Its not looking at our VNET */
3239 if (it && (it->inp == inp)) {
3241 * This is tricky and we hold the iterator lock, but when it
3242 * returns and gets the lock (when we release it) the
3243 * iterator will try to operate on inp. We need to stop that
3244 * from happening. But of course the iterator has a
3245 * reference on the stcb and inp. We can mark it and it will
3248 * If its a single iterator situation, we set the end
3249 * iterator flag. Otherwise we set the iterator to go to the
3253 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3254 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
3256 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_INP;
3260 * Now go through and remove any single reference to our inp that
3261 * may be still pending on the list
3263 SCTP_IPI_ITERATOR_WQ_LOCK();
3264 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
3265 if (it->vn != curvnet) {
3268 if (it->inp == inp) {
3269 /* This one points to me is it inp specific? */
3270 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3271 /* Remove and free this one */
3272 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
3274 if (it->function_atend != NULL) {
3275 (*it->function_atend) (it->pointer, it->val);
3277 SCTP_FREE(it, SCTP_M_ITER);
3279 it->inp = LIST_NEXT(it->inp, sctp_list);
3281 SCTP_INP_INCR_REF(it->inp);
3285 * When its put in the refcnt is incremented so decr
3288 SCTP_INP_DECR_REF(inp);
3291 SCTP_IPI_ITERATOR_WQ_UNLOCK();
3294 /* release sctp_inpcb unbind the port */
3296 sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
3299 * Here we free a endpoint. We must find it (if it is in the Hash
3300 * table) and remove it from there. Then we must also find it in the
3301 * overall list and remove it from there. After all removals are
3302 * complete then any timer has to be stopped. Then start the actual
3303 * freeing. a) Any local lists. b) Any associations. c) The hash of
3304 * all associations. d) finally the ep itself.
3306 struct sctp_tcb *asoc, *nasoc;
3307 struct sctp_laddr *laddr, *nladdr;
3308 struct inpcb *ip_pcb;
3310 int being_refed = 0;
3311 struct sctp_queued_to_read *sq, *nsq;
3313 sctp_sharedkey_t *shared_key, *nshared_key;
3316 #ifdef SCTP_LOG_CLOSING
3317 sctp_log_closing(inp, NULL, 0);
3319 SCTP_ITERATOR_LOCK();
3320 /* mark any iterators on the list or being processed */
3321 sctp_iterator_inp_being_freed(inp);
3322 SCTP_ITERATOR_UNLOCK();
3323 so = inp->sctp_socket;
3324 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
3325 /* been here before.. eeks.. get out of here */
3326 SCTP_PRINTF("This conflict in free SHOULD not be happening! from %d, imm %d\n", from, immediate);
3327 #ifdef SCTP_LOG_CLOSING
3328 sctp_log_closing(inp, NULL, 1);
3332 SCTP_ASOC_CREATE_LOCK(inp);
3333 SCTP_INP_INFO_WLOCK();
3335 SCTP_INP_WLOCK(inp);
3336 if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
3337 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP;
3338 /* socket is gone, so no more wakeups allowed */
3339 inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE;
3340 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
3341 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
3344 /* First time through we have the socket lock, after that no more. */
3345 sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL,
3346 SCTP_FROM_SCTP_PCB + SCTP_LOC_1);
3349 sctp_m_freem(inp->control);
3350 inp->control = NULL;
3353 sctp_m_freem(inp->pkt);
3356 ip_pcb = &inp->ip_inp.inp; /* we could just cast the main pointer
3357 * here but I will be nice :> (i.e.
3359 if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
3363 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3364 SCTP_TCB_LOCK(asoc);
3365 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3366 /* Skip guys being freed */
3368 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3370 * Special case - we did not start a
3371 * kill timer on the asoc due to it
3372 * was not closed. So go ahead and
3375 SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_IN_ACCEPT_QUEUE);
3376 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3378 SCTP_TCB_UNLOCK(asoc);
3381 if (((SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_WAIT) ||
3382 (SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_ECHOED)) &&
3383 (asoc->asoc.total_output_queue_size == 0)) {
3385 * If we have data in queue, we don't want
3386 * to just free since the app may have done,
3387 * send()/close or connect/send/close. And
3388 * it wants the data to get across first.
3390 /* Just abandon things in the front states */
3391 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE,
3392 SCTP_FROM_SCTP_PCB + SCTP_LOC_2) == 0) {
3397 /* Disconnect the socket please */
3398 asoc->sctp_socket = NULL;
3399 SCTP_ADD_SUBSTATE(asoc, SCTP_STATE_CLOSED_SOCKET);
3400 if ((asoc->asoc.size_on_reasm_queue > 0) ||
3401 (asoc->asoc.control_pdapi) ||
3402 (asoc->asoc.size_on_all_streams > 0) ||
3403 (so && (so->so_rcv.sb_cc > 0))) {
3404 /* Left with Data unread */
3405 struct mbuf *op_err;
3407 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3408 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_3;
3409 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3410 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3411 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
3412 (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3413 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3415 if (sctp_free_assoc(inp, asoc,
3416 SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_4) == 0) {
3420 } else if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3421 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3422 (asoc->asoc.stream_queue_cnt == 0)) {
3423 if ((*asoc->asoc.ss_functions.sctp_ss_is_user_msgs_incomplete) (asoc, &asoc->asoc)) {
3426 if ((SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
3427 (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
3428 struct sctp_nets *netp;
3431 * there is nothing queued to send,
3432 * so I send shutdown
3434 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
3435 (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3436 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3438 SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT);
3439 sctp_stop_timers_for_shutdown(asoc);
3440 if (asoc->asoc.alternate) {
3441 netp = asoc->asoc.alternate;
3443 netp = asoc->asoc.primary_destination;
3445 sctp_send_shutdown(asoc, netp);
3446 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, asoc->sctp_ep, asoc,
3448 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3449 asoc->asoc.primary_destination);
3450 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED);
3453 /* mark into shutdown pending */
3454 SCTP_ADD_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING);
3455 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3456 asoc->asoc.primary_destination);
3457 if ((*asoc->asoc.ss_functions.sctp_ss_is_user_msgs_incomplete) (asoc, &asoc->asoc)) {
3458 SCTP_ADD_SUBSTATE(asoc, SCTP_STATE_PARTIAL_MSG_LEFT);
3460 if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3461 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3462 (asoc->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
3463 struct mbuf *op_err;
3466 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3467 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_5;
3468 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3469 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3470 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
3471 (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3472 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3474 if (sctp_free_assoc(inp, asoc,
3475 SCTP_PCBFREE_NOFORCE,
3476 SCTP_FROM_SCTP_PCB + SCTP_LOC_6) == 0) {
3481 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
3485 SCTP_TCB_UNLOCK(asoc);
3487 /* now is there some left in our SHUTDOWN state? */
3489 #ifdef SCTP_LOG_CLOSING
3490 sctp_log_closing(inp, NULL, 2);
3492 inp->sctp_socket = NULL;
3493 SCTP_INP_WUNLOCK(inp);
3494 SCTP_ASOC_CREATE_UNLOCK(inp);
3495 SCTP_INP_INFO_WUNLOCK();
3499 inp->sctp_socket = NULL;
3500 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) !=
3501 SCTP_PCB_FLAGS_UNBOUND) {
3503 * ok, this guy has been bound. It's port is somewhere in
3504 * the SCTP_BASE_INFO(hash table). Remove it!
3506 LIST_REMOVE(inp, sctp_hash);
3507 inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND;
3511 * If there is a timer running to kill us, forget it, since it may
3512 * have a contest on the INP lock.. which would cause us to die ...
3515 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3516 SCTP_TCB_LOCK(asoc);
3517 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3518 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3519 SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_IN_ACCEPT_QUEUE);
3520 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3523 SCTP_TCB_UNLOCK(asoc);
3526 /* Free associations that are NOT killing us */
3527 if ((SCTP_GET_STATE(asoc) != SCTP_STATE_COOKIE_WAIT) &&
3528 ((asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) {
3529 struct mbuf *op_err;
3531 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3532 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_7;
3533 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3534 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3535 } else if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3537 SCTP_TCB_UNLOCK(asoc);
3540 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
3541 (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3542 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3544 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_FORCE,
3545 SCTP_FROM_SCTP_PCB + SCTP_LOC_8) == 0) {
3550 /* Ok we have someone out there that will kill us */
3551 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3552 #ifdef SCTP_LOG_CLOSING
3553 sctp_log_closing(inp, NULL, 3);
3555 SCTP_INP_WUNLOCK(inp);
3556 SCTP_ASOC_CREATE_UNLOCK(inp);
3557 SCTP_INP_INFO_WUNLOCK();
3560 if (SCTP_INP_LOCK_CONTENDED(inp))
3562 if (SCTP_INP_READ_CONTENDED(inp))
3564 if (SCTP_ASOC_CREATE_LOCK_CONTENDED(inp))
3567 if ((inp->refcount) ||
3569 (inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) {
3570 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3571 #ifdef SCTP_LOG_CLOSING
3572 sctp_log_closing(inp, NULL, 4);
3574 sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
3575 SCTP_INP_WUNLOCK(inp);
3576 SCTP_ASOC_CREATE_UNLOCK(inp);
3577 SCTP_INP_INFO_WUNLOCK();
3580 inp->sctp_ep.signature_change.type = 0;
3581 inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE;
3583 * Remove it from the list .. last thing we need a lock for.
3585 LIST_REMOVE(inp, sctp_list);
3586 SCTP_INP_WUNLOCK(inp);
3587 SCTP_ASOC_CREATE_UNLOCK(inp);
3588 SCTP_INP_INFO_WUNLOCK();
3590 * Now we release all locks. Since this INP cannot be found anymore
3591 * except possibly by the kill timer that might be running. We call
3592 * the drain function here. It should hit the case were it sees the
3593 * ACTIVE flag cleared and exit out freeing us to proceed and
3594 * destroy everything.
3596 if (from != SCTP_CALLED_FROM_INPKILL_TIMER) {
3597 (void)SCTP_OS_TIMER_STOP_DRAIN(&inp->sctp_ep.signature_change.timer);
3599 /* Probably un-needed */
3600 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3603 #ifdef SCTP_LOG_CLOSING
3604 sctp_log_closing(inp, NULL, 5);
3608 if ((inp->sctp_asocidhash) != NULL) {
3609 SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark);
3610 inp->sctp_asocidhash = NULL;
3612 /* sa_ignore FREED_MEMORY */
3613 TAILQ_FOREACH_SAFE(sq, &inp->read_queue, next, nsq) {
3614 /* Its only abandoned if it had data left */
3616 SCTP_STAT_INCR(sctps_left_abandon);
3618 TAILQ_REMOVE(&inp->read_queue, sq, next);
3619 sctp_free_remote_addr(sq->whoFrom);
3621 so->so_rcv.sb_cc -= sq->length;
3623 sctp_m_freem(sq->data);
3627 * no need to free the net count, since at this point all
3630 sctp_free_a_readq(NULL, sq);
3632 /* Now the sctp_pcb things */
3634 * free each asoc if it is not already closed/free. we can't use the
3635 * macro here since le_next will get freed as part of the
3636 * sctp_free_assoc() call.
3638 if (ip_pcb->inp_options) {
3639 (void)sctp_m_free(ip_pcb->inp_options);
3640 ip_pcb->inp_options = 0;
3645 if (ip_pcb->inp_vflag & INP_IPV6)
3646 ip6_freepcbopts(((struct inpcb *)inp)->in6p_outputopts);
3648 ip_pcb->inp_vflag = 0;
3649 /* free up authentication fields */
3650 if (inp->sctp_ep.local_auth_chunks != NULL)
3651 sctp_free_chunklist(inp->sctp_ep.local_auth_chunks);
3652 if (inp->sctp_ep.local_hmacs != NULL)
3653 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3655 LIST_FOREACH_SAFE(shared_key, &inp->sctp_ep.shared_keys, next, nshared_key) {
3656 LIST_REMOVE(shared_key, next);
3657 sctp_free_sharedkey(shared_key);
3658 /* sa_ignore FREED_MEMORY */
3662 * if we have an address list the following will free the list of
3663 * ifaddr's that are set into this ep. Again macro limitations here,
3664 * since the LIST_FOREACH could be a bad idea.
3666 LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
3667 sctp_remove_laddr(laddr);
3670 #ifdef SCTP_TRACK_FREED_ASOCS
3672 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_free_list, sctp_tcblist, nasoc) {
3673 LIST_REMOVE(asoc, sctp_tcblist);
3674 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), asoc);
3675 SCTP_DECR_ASOC_COUNT();
3677 /* *** END TEMP CODE *** */
3679 /* Now lets see about freeing the EP hash table. */
3680 if (inp->sctp_tcbhash != NULL) {
3681 SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
3682 inp->sctp_tcbhash = NULL;
3684 /* Now we must put the ep memory back into the zone pool */
3685 crfree(inp->ip_inp.inp.inp_cred);
3686 INP_LOCK_DESTROY(&inp->ip_inp.inp);
3687 SCTP_INP_LOCK_DESTROY(inp);
3688 SCTP_INP_READ_DESTROY(inp);
3689 SCTP_ASOC_CREATE_LOCK_DESTROY(inp);
3690 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
3691 SCTP_DECR_EP_COUNT();
3696 sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
3698 struct sctp_nets *net;
3700 /* locate the address */
3701 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3702 if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr))
3710 sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
3712 struct sctp_ifa *sctp_ifa;
3714 sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED);
3723 * add's a remote endpoint address, done with the INIT/INIT-ACK as well as
3724 * when a ASCONF arrives that adds it. It will also initialize all the cwnd
3728 sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
3729 struct sctp_nets **netp, uint16_t port, int set_scope, int from)
3732 * The following is redundant to the same lines in the
3733 * sctp_aloc_assoc() but is needed since others call the add address
3736 struct sctp_nets *net, *netfirst;
3739 SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ",
3741 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr);
3743 netfirst = sctp_findnet(stcb, newaddr);
3746 * Lie and return ok, we don't want to make the association
3747 * go away for this behavior. It will happen in the TCP
3748 * model in a connected socket. It does not reach the hash
3749 * table until after the association is built so it can't be
3750 * found. Mark as reachable, since the initial creation will
3751 * have been cleared and the NOT_IN_ASSOC flag will have
3752 * been added... and we don't want to end up removing it
3755 if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) {
3756 netfirst->dest_state = (SCTP_ADDR_REACHABLE |
3757 SCTP_ADDR_UNCONFIRMED);
3759 netfirst->dest_state = SCTP_ADDR_REACHABLE;
3765 switch (newaddr->sa_family) {
3769 struct sockaddr_in *sin;
3771 sin = (struct sockaddr_in *)newaddr;
3772 if (sin->sin_addr.s_addr == 0) {
3773 /* Invalid address */
3776 /* zero out the zero area */
3777 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
3779 /* assure len is set */
3780 sin->sin_len = sizeof(struct sockaddr_in);
3782 if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
3783 stcb->asoc.scope.ipv4_local_scope = 1;
3786 /* Validate the address is in scope */
3787 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) &&
3788 (stcb->asoc.scope.ipv4_local_scope == 0)) {
3798 struct sockaddr_in6 *sin6;
3800 sin6 = (struct sockaddr_in6 *)newaddr;
3801 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3802 /* Invalid address */
3805 /* assure len is set */
3806 sin6->sin6_len = sizeof(struct sockaddr_in6);
3808 if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) {
3809 stcb->asoc.scope.loopback_scope = 1;
3810 stcb->asoc.scope.local_scope = 0;
3811 stcb->asoc.scope.ipv4_local_scope = 1;
3812 stcb->asoc.scope.site_scope = 1;
3813 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
3815 * If the new destination is a
3816 * LINK_LOCAL we must have common
3817 * site scope. Don't set the local
3818 * scope since we may not share all
3819 * links, only loopback can do this.
3820 * Links on the local network would
3821 * also be on our private network
3824 stcb->asoc.scope.ipv4_local_scope = 1;
3825 stcb->asoc.scope.site_scope = 1;
3826 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
3828 * If the new destination is
3829 * SITE_LOCAL then we must have site
3832 stcb->asoc.scope.site_scope = 1;
3835 /* Validate the address is in scope */
3836 if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) &&
3837 (stcb->asoc.scope.loopback_scope == 0)) {
3839 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
3840 (stcb->asoc.scope.local_scope == 0)) {
3842 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
3843 (stcb->asoc.scope.site_scope == 0)) {
3851 /* not supported family type */
3854 net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets);
3858 SCTP_INCR_RADDR_COUNT();
3859 memset(net, 0, sizeof(struct sctp_nets));
3860 (void)SCTP_GETTIME_TIMEVAL(&net->start_time);
3861 memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len);
3862 switch (newaddr->sa_family) {
3865 ((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport;
3870 ((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport;
3876 net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id);
3877 if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) {
3878 stcb->asoc.scope.loopback_scope = 1;
3879 stcb->asoc.scope.ipv4_local_scope = 1;
3880 stcb->asoc.scope.local_scope = 0;
3881 stcb->asoc.scope.site_scope = 1;
3884 net->failure_threshold = stcb->asoc.def_net_failure;
3885 net->pf_threshold = stcb->asoc.def_net_pf_threshold;
3886 if (addr_inscope == 0) {
3887 net->dest_state = (SCTP_ADDR_REACHABLE |
3888 SCTP_ADDR_OUT_OF_SCOPE);
3890 if (from == SCTP_ADDR_IS_CONFIRMED)
3891 /* SCTP_ADDR_IS_CONFIRMED is passed by connect_x */
3892 net->dest_state = SCTP_ADDR_REACHABLE;
3894 net->dest_state = SCTP_ADDR_REACHABLE |
3895 SCTP_ADDR_UNCONFIRMED;
3898 * We set this to 0, the timer code knows that this means its an
3901 net->rto_needed = 1;
3903 net->RTO_measured = 0;
3904 stcb->asoc.numnets++;
3906 net->cwr_window_tsn = net->last_cwr_tsn = stcb->asoc.sending_seq - 1;
3908 net->dscp = stcb->asoc.default_dscp;
3910 net->flowlabel = stcb->asoc.default_flowlabel;
3912 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
3913 net->dest_state |= SCTP_ADDR_NOHB;
3915 net->dest_state &= ~SCTP_ADDR_NOHB;
3917 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DO_NOT_PMTUD)) {
3918 net->dest_state |= SCTP_ADDR_NO_PMTUD;
3920 net->dest_state &= ~SCTP_ADDR_NO_PMTUD;
3922 net->heart_beat_delay = stcb->asoc.heart_beat_delay;
3923 /* Init the timer structure */
3924 SCTP_OS_TIMER_INIT(&net->rxt_timer.timer);
3925 SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer);
3926 SCTP_OS_TIMER_INIT(&net->hb_timer.timer);
3928 /* Now generate a route for this guy */
3930 /* KAME hack: embed scopeid */
3931 if (newaddr->sa_family == AF_INET6) {
3932 struct sockaddr_in6 *sin6;
3934 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3935 (void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone));
3936 sin6->sin6_scope_id = 0;
3939 SCTP_RTALLOC((sctp_route_t *)&net->ro,
3941 stcb->sctp_ep->fibnum);
3943 net->src_addr_selected = 0;
3944 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) {
3945 /* Get source address */
3946 net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep,
3948 (sctp_route_t *)&net->ro,
3952 if (stcb->asoc.default_mtu > 0) {
3953 net->mtu = stcb->asoc.default_mtu;
3954 switch (net->ro._l_addr.sa.sa_family) {
3957 net->mtu += SCTP_MIN_V4_OVERHEAD;
3962 net->mtu += SCTP_MIN_OVERHEAD;
3968 #if defined(INET) || defined(INET6)
3970 net->mtu += (uint32_t)sizeof(struct udphdr);
3973 } else if (net->ro._s_addr != NULL) {
3974 uint32_t imtu, rmtu, hcmtu;
3976 net->src_addr_selected = 1;
3977 /* Now get the interface MTU */
3978 if (net->ro._s_addr->ifn_p != NULL) {
3979 imtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p);
3983 rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_rt);
3984 hcmtu = sctp_hc_get_mtu(&net->ro._l_addr, stcb->sctp_ep->fibnum);
3985 net->mtu = sctp_min_mtu(hcmtu, rmtu, imtu);
3988 * Start things off to match mtu of
3991 SCTP_SET_MTU_OF_ROUTE(&net->ro._l_addr.sa,
3992 net->ro.ro_rt, net->mtu);
3996 if (net->mtu == 0) {
3997 if (stcb->asoc.default_mtu > 0) {
3998 net->mtu = stcb->asoc.default_mtu;
3999 switch (net->ro._l_addr.sa.sa_family) {
4002 net->mtu += SCTP_MIN_V4_OVERHEAD;
4007 net->mtu += SCTP_MIN_OVERHEAD;
4013 #if defined(INET) || defined(INET6)
4015 net->mtu += (uint32_t)sizeof(struct udphdr);
4019 switch (newaddr->sa_family) {
4022 net->mtu = SCTP_DEFAULT_MTU;
4035 #if defined(INET) || defined(INET6)
4037 net->mtu -= (uint32_t)sizeof(struct udphdr);
4040 if (from == SCTP_ALLOC_ASOC) {
4041 stcb->asoc.smallest_mtu = net->mtu;
4043 if (stcb->asoc.smallest_mtu > net->mtu) {
4044 sctp_pathmtu_adjustment(stcb, net->mtu);
4047 if (newaddr->sa_family == AF_INET6) {
4048 struct sockaddr_in6 *sin6;
4050 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
4051 (void)sa6_recoverscope(sin6);
4055 /* JRS - Use the congestion control given in the CC module */
4056 if (stcb->asoc.cc_functions.sctp_set_initial_cc_param != NULL)
4057 (*stcb->asoc.cc_functions.sctp_set_initial_cc_param) (stcb, net);
4060 * CMT: CUC algo - set find_pseudo_cumack to TRUE (1) at beginning
4061 * of assoc (2005/06/27, iyengar@cis.udel.edu)
4063 net->find_pseudo_cumack = 1;
4064 net->find_rtx_pseudo_cumack = 1;
4065 /* Choose an initial flowid. */
4066 net->flowid = stcb->asoc.my_vtag ^
4067 ntohs(stcb->rport) ^
4068 ntohs(stcb->sctp_ep->sctp_lport);
4069 net->flowtype = M_HASHTYPE_OPAQUE_HASH;
4073 netfirst = TAILQ_FIRST(&stcb->asoc.nets);
4074 if (net->ro.ro_rt == NULL) {
4075 /* Since we have no route put it at the back */
4076 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4077 } else if (netfirst == NULL) {
4078 /* We are the first one in the pool. */
4079 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4080 } else if (netfirst->ro.ro_rt == NULL) {
4082 * First one has NO route. Place this one ahead of the first
4085 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4086 } else if (net->ro.ro_rt->rt_ifp != netfirst->ro.ro_rt->rt_ifp) {
4088 * This one has a different interface than the one at the
4089 * top of the list. Place it ahead.
4091 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4094 * Ok we have the same interface as the first one. Move
4095 * forward until we find either a) one with a NULL route...
4096 * insert ahead of that b) one with a different ifp.. insert
4097 * after that. c) end of the list.. insert at the tail.
4099 struct sctp_nets *netlook;
4102 netlook = TAILQ_NEXT(netfirst, sctp_next);
4103 if (netlook == NULL) {
4104 /* End of the list */
4105 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4107 } else if (netlook->ro.ro_rt == NULL) {
4108 /* next one has NO route */
4109 TAILQ_INSERT_BEFORE(netfirst, net, sctp_next);
4111 } else if (netlook->ro.ro_rt->rt_ifp != net->ro.ro_rt->rt_ifp) {
4112 TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook,
4118 } while (netlook != NULL);
4121 /* got to have a primary set */
4122 if (stcb->asoc.primary_destination == 0) {
4123 stcb->asoc.primary_destination = net;
4124 } else if ((stcb->asoc.primary_destination->ro.ro_rt == NULL) &&
4126 ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
4127 /* No route to current primary adopt new primary */
4128 stcb->asoc.primary_destination = net;
4130 /* Validate primary is first */
4131 net = TAILQ_FIRST(&stcb->asoc.nets);
4132 if ((net != stcb->asoc.primary_destination) &&
4133 (stcb->asoc.primary_destination)) {
4135 * first one on the list is NOT the primary sctp_cmpaddr()
4136 * is much more efficient if the primary is the first on the
4139 TAILQ_REMOVE(&stcb->asoc.nets,
4140 stcb->asoc.primary_destination, sctp_next);
4141 TAILQ_INSERT_HEAD(&stcb->asoc.nets,
4142 stcb->asoc.primary_destination, sctp_next);
4149 sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
4152 struct sctpasochead *head;
4153 struct sctp_tcb *lstcb;
4156 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
4161 * We don't allow assoc id to be one of SCTP_FUTURE_ASSOC,
4162 * SCTP_CURRENT_ASSOC and SCTP_ALL_ASSOC.
4164 if (inp->sctp_associd_counter <= SCTP_ALL_ASSOC) {
4165 inp->sctp_associd_counter = SCTP_ALL_ASSOC + 1;
4167 id = inp->sctp_associd_counter;
4168 inp->sctp_associd_counter++;
4169 lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t)id, 0);
4173 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
4174 LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash);
4175 stcb->asoc.in_asocid_hash = 1;
4180 * allocate an association and add it to the endpoint. The caller must be
4181 * careful to add all additional addresses once they are know right away or
4182 * else the assoc will be may experience a blackout scenario.
4185 sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
4186 int *error, uint32_t override_tag, uint32_t vrf_id,
4187 uint16_t o_streams, uint16_t port,
4189 int initialize_auth_params)
4191 /* note the p argument is only valid in unbound sockets */
4193 struct sctp_tcb *stcb;
4194 struct sctp_association *asoc;
4195 struct sctpasochead *head;
4200 * Assumption made here: Caller has done a
4201 * sctp_findassociation_ep_addr(ep, addr's); to make sure the
4202 * address does not exist already.
4204 if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) {
4205 /* Hit max assoc, sorry no more */
4206 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4210 if (firstaddr == NULL) {
4211 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4215 SCTP_INP_RLOCK(inp);
4216 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
4217 ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) ||
4218 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4220 * If its in the TCP pool, its NOT allowed to create an
4221 * association. The parent listener needs to call
4222 * sctp_aloc_assoc.. or the one-2-many socket. If a peeled
4223 * off, or connected one does this.. its an error.
4225 SCTP_INP_RUNLOCK(inp);
4226 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4230 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
4231 (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)) {
4232 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) ||
4233 (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED)) {
4234 SCTP_INP_RUNLOCK(inp);
4235 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4240 SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:");
4243 SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr);
4244 switch (firstaddr->sa_family) {
4247 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4248 ntohs(((struct sockaddr_in *)firstaddr)->sin_port));
4253 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4254 ntohs(((struct sockaddr_in6 *)firstaddr)->sin6_port));
4261 SCTPDBG(SCTP_DEBUG_PCB3, "None\n");
4263 #endif /* SCTP_DEBUG */
4264 switch (firstaddr->sa_family) {
4268 struct sockaddr_in *sin;
4270 sin = (struct sockaddr_in *)firstaddr;
4271 if ((ntohs(sin->sin_port) == 0) ||
4272 (sin->sin_addr.s_addr == INADDR_ANY) ||
4273 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
4274 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
4275 /* Invalid address */
4276 SCTP_INP_RUNLOCK(inp);
4277 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4281 rport = sin->sin_port;
4288 struct sockaddr_in6 *sin6;
4290 sin6 = (struct sockaddr_in6 *)firstaddr;
4291 if ((ntohs(sin6->sin6_port) == 0) ||
4292 IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
4293 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
4294 /* Invalid address */
4295 SCTP_INP_RUNLOCK(inp);
4296 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4300 rport = sin6->sin6_port;
4305 /* not supported family type */
4306 SCTP_INP_RUNLOCK(inp);
4307 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4311 SCTP_INP_RUNLOCK(inp);
4312 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4314 * If you have not performed a bind, then we need to do the
4315 * ephemeral bind for you.
4317 if ((err = sctp_inpcb_bind(inp->sctp_socket,
4318 (struct sockaddr *)NULL,
4319 (struct sctp_ifa *)NULL,
4322 /* bind error, probably perm */
4327 stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb);
4329 /* out of memory? */
4330 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
4334 SCTP_INCR_ASOC_COUNT();
4336 memset(stcb, 0, sizeof(*stcb));
4339 SCTP_TCB_LOCK_INIT(stcb);
4340 SCTP_TCB_SEND_LOCK_INIT(stcb);
4341 stcb->rport = rport;
4342 /* setup back pointer's */
4343 stcb->sctp_ep = inp;
4344 stcb->sctp_socket = inp->sctp_socket;
4345 if ((err = sctp_init_asoc(inp, stcb, override_tag, vrf_id, o_streams))) {
4347 SCTP_TCB_LOCK_DESTROY(stcb);
4348 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4349 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4350 SCTP_DECR_ASOC_COUNT();
4355 SCTP_INP_INFO_WLOCK();
4356 SCTP_INP_WLOCK(inp);
4357 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
4358 /* inpcb freed while alloc going on */
4359 SCTP_TCB_LOCK_DESTROY(stcb);
4360 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4361 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4362 SCTP_INP_WUNLOCK(inp);
4363 SCTP_INP_INFO_WUNLOCK();
4364 SCTP_DECR_ASOC_COUNT();
4365 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4369 SCTP_TCB_LOCK(stcb);
4371 asoc->assoc_id = sctp_aloc_a_assoc_id(inp, stcb);
4372 /* now that my_vtag is set, add it to the hash */
4373 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))];
4374 /* put it in the bucket in the vtag hash of assoc's for the system */
4375 LIST_INSERT_HEAD(head, stcb, sctp_asocs);
4376 SCTP_INP_INFO_WUNLOCK();
4378 if ((err = sctp_add_remote_addr(stcb, firstaddr, NULL, port, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC))) {
4379 /* failure.. memory error? */
4380 if (asoc->strmout) {
4381 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4382 asoc->strmout = NULL;
4384 if (asoc->mapping_array) {
4385 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4386 asoc->mapping_array = NULL;
4388 if (asoc->nr_mapping_array) {
4389 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4390 asoc->nr_mapping_array = NULL;
4392 SCTP_DECR_ASOC_COUNT();
4393 SCTP_TCB_UNLOCK(stcb);
4394 SCTP_TCB_LOCK_DESTROY(stcb);
4395 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4396 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4397 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4398 SCTP_INP_WUNLOCK(inp);
4399 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4403 /* Init all the timers */
4404 SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer);
4405 SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer);
4406 SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer);
4407 SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer);
4408 SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer);
4409 SCTP_OS_TIMER_INIT(&asoc->delayed_event_timer.timer);
4410 SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer);
4412 LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist);
4413 /* now file the port under the hash as well */
4414 if (inp->sctp_tcbhash != NULL) {
4415 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport,
4416 inp->sctp_hashmark)];
4417 LIST_INSERT_HEAD(head, stcb, sctp_tcbhash);
4419 if (initialize_auth_params == SCTP_INITIALIZE_AUTH_PARAMS) {
4420 sctp_initialize_auth_params(inp, stcb);
4422 SCTP_INP_WUNLOCK(inp);
4423 SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", (void *)stcb);
4429 sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
4431 struct sctp_association *asoc;
4435 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4436 if (net == asoc->primary_destination) {
4438 struct sctp_nets *lnet;
4440 lnet = TAILQ_FIRST(&asoc->nets);
4442 * Mobility adaptation Ideally, if deleted destination is
4443 * the primary, it becomes a fast retransmission trigger by
4444 * the subsequent SET PRIMARY. (by micchie)
4446 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
4447 SCTP_MOBILITY_BASE) ||
4448 sctp_is_mobility_feature_on(stcb->sctp_ep,
4449 SCTP_MOBILITY_FASTHANDOFF)) {
4450 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n");
4451 if (asoc->deleted_primary != NULL) {
4452 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n");
4455 asoc->deleted_primary = net;
4456 atomic_add_int(&net->ref_count, 1);
4457 memset(&net->lastsa, 0, sizeof(net->lastsa));
4458 memset(&net->lastsv, 0, sizeof(net->lastsv));
4459 sctp_mobility_feature_on(stcb->sctp_ep,
4460 SCTP_MOBILITY_PRIM_DELETED);
4461 sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED,
4462 stcb->sctp_ep, stcb, NULL);
4465 /* Try to find a confirmed primary */
4466 asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0);
4468 if (net == asoc->last_data_chunk_from) {
4470 asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets);
4472 if (net == asoc->last_control_chunk_from) {
4474 asoc->last_control_chunk_from = NULL;
4476 if (net == stcb->asoc.alternate) {
4477 sctp_free_remote_addr(stcb->asoc.alternate);
4478 stcb->asoc.alternate = NULL;
4480 sctp_free_remote_addr(net);
4484 * remove a remote endpoint address from an association, it will fail if the
4485 * address does not exist.
4488 sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
4491 * Here we need to remove a remote address. This is quite simple, we
4492 * first find it in the list of address for the association
4493 * (tasoc->asoc.nets) and then if it is there, we do a LIST_REMOVE
4494 * on that item. Note we do not allow it to be removed if there are
4495 * no other addresses.
4497 struct sctp_association *asoc;
4498 struct sctp_nets *net, *nnet;
4502 /* locate the address */
4503 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
4504 if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) {
4507 if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr,
4509 /* we found the guy */
4510 if (asoc->numnets < 2) {
4511 /* Must have at LEAST two remote addresses */
4514 sctp_remove_net(stcb, net);
4524 sctp_delete_from_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4526 struct sctpvtaghead *chain;
4527 struct sctp_tagblock *twait_block;
4531 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4532 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4533 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4534 if ((twait_block->vtag_block[i].v_tag == tag) &&
4535 (twait_block->vtag_block[i].lport == lport) &&
4536 (twait_block->vtag_block[i].rport == rport)) {
4537 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4538 twait_block->vtag_block[i].v_tag = 0;
4539 twait_block->vtag_block[i].lport = 0;
4540 twait_block->vtag_block[i].rport = 0;
4551 sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4553 struct sctpvtaghead *chain;
4554 struct sctp_tagblock *twait_block;
4558 SCTP_INP_INFO_WLOCK();
4559 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4560 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4561 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4562 if ((twait_block->vtag_block[i].v_tag == tag) &&
4563 (twait_block->vtag_block[i].lport == lport) &&
4564 (twait_block->vtag_block[i].rport == rport)) {
4572 SCTP_INP_INFO_WUNLOCK();
4578 sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport)
4580 struct sctpvtaghead *chain;
4581 struct sctp_tagblock *twait_block;
4589 (void)SCTP_GETTIME_TIMEVAL(&now);
4590 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4592 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4593 /* Block(s) present, lets find space, and expire on the fly */
4594 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4595 if ((twait_block->vtag_block[i].v_tag == 0) &&
4597 twait_block->vtag_block[i].tv_sec_at_expire =
4599 twait_block->vtag_block[i].v_tag = tag;
4600 twait_block->vtag_block[i].lport = lport;
4601 twait_block->vtag_block[i].rport = rport;
4603 } else if ((twait_block->vtag_block[i].v_tag) &&
4604 ((long)twait_block->vtag_block[i].tv_sec_at_expire < now.tv_sec)) {
4605 /* Audit expires this guy */
4606 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4607 twait_block->vtag_block[i].v_tag = 0;
4608 twait_block->vtag_block[i].lport = 0;
4609 twait_block->vtag_block[i].rport = 0;
4611 /* Reuse it for my new tag */
4612 twait_block->vtag_block[i].tv_sec_at_expire = now.tv_sec + time;
4613 twait_block->vtag_block[i].v_tag = tag;
4614 twait_block->vtag_block[i].lport = lport;
4615 twait_block->vtag_block[i].rport = rport;
4622 * We only do up to the block where we can place our
4628 /* Need to add a new block to chain */
4630 SCTP_MALLOC(twait_block, struct sctp_tagblock *,
4631 sizeof(struct sctp_tagblock), SCTP_M_TIMW);
4632 if (twait_block == NULL) {
4634 panic("Can not alloc tagblock");
4638 memset(twait_block, 0, sizeof(struct sctp_tagblock));
4639 LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock);
4640 twait_block->vtag_block[0].tv_sec_at_expire = now.tv_sec + time;
4641 twait_block->vtag_block[0].v_tag = tag;
4642 twait_block->vtag_block[0].lport = lport;
4643 twait_block->vtag_block[0].rport = rport;
4648 sctp_clean_up_stream(struct sctp_tcb *stcb, struct sctp_readhead *rh)
4650 struct sctp_tmit_chunk *chk, *nchk;
4651 struct sctp_queued_to_read *control, *ncontrol;
4653 TAILQ_FOREACH_SAFE(control, rh, next_instrm, ncontrol) {
4654 TAILQ_REMOVE(rh, control, next_instrm);
4655 control->on_strm_q = 0;
4656 if (control->on_read_q == 0) {
4657 sctp_free_remote_addr(control->whoFrom);
4658 if (control->data) {
4659 sctp_m_freem(control->data);
4660 control->data = NULL;
4663 /* Reassembly free? */
4664 TAILQ_FOREACH_SAFE(chk, &control->reasm, sctp_next, nchk) {
4665 TAILQ_REMOVE(&control->reasm, chk, sctp_next);
4667 sctp_m_freem(chk->data);
4670 if (chk->holds_key_ref)
4671 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4672 sctp_free_remote_addr(chk->whoTo);
4673 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4674 SCTP_DECR_CHK_COUNT();
4675 /* sa_ignore FREED_MEMORY */
4678 * We don't free the address here since all the net's were
4681 if (control->on_read_q == 0) {
4682 sctp_free_a_readq(stcb, control);
4689 * Free the association after un-hashing the remote port. This
4690 * function ALWAYS returns holding NO LOCK on the stcb. It DOES
4691 * expect that the input to this function IS a locked TCB.
4692 * It will return 0, if it did NOT destroy the association (instead
4693 * it unlocks it. It will return NON-zero if it either destroyed the
4694 * association OR the association is already destroyed.
4697 sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
4700 struct sctp_association *asoc;
4701 struct sctp_nets *net, *nnet;
4702 struct sctp_laddr *laddr, *naddr;
4703 struct sctp_tmit_chunk *chk, *nchk;
4704 struct sctp_asconf_addr *aparam, *naparam;
4705 struct sctp_asconf_ack *aack, *naack;
4706 struct sctp_stream_reset_list *strrst, *nstrrst;
4707 struct sctp_queued_to_read *sq, *nsq;
4708 struct sctp_stream_queue_pending *sp, *nsp;
4709 sctp_sharedkey_t *shared_key, *nshared_key;
4712 /* first, lets purge the entry from the hash table. */
4714 #ifdef SCTP_LOG_CLOSING
4715 sctp_log_closing(inp, stcb, 6);
4717 if (stcb->asoc.state == 0) {
4718 #ifdef SCTP_LOG_CLOSING
4719 sctp_log_closing(inp, NULL, 7);
4721 /* there is no asoc, really TSNH :-0 */
4724 if (stcb->asoc.alternate) {
4725 sctp_free_remote_addr(stcb->asoc.alternate);
4726 stcb->asoc.alternate = NULL;
4729 if (stcb->freed_from_where == 0) {
4730 /* Only record the first place free happened from */
4731 stcb->freed_from_where = from_location;
4736 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4737 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4738 /* nothing around */
4741 so = inp->sctp_socket;
4744 * We used timer based freeing if a reader or writer is in the way.
4745 * So we first check if we are actually being called from a timer,
4746 * if so we abort early if a reader or writer is still in the way.
4748 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
4749 (from_inpcbfree == SCTP_NORMAL_PROC)) {
4751 * is it the timer driving us? if so are the reader/writers
4754 if (stcb->asoc.refcnt) {
4755 /* nope, reader or writer in the way */
4756 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4757 /* no asoc destroyed */
4758 SCTP_TCB_UNLOCK(stcb);
4759 #ifdef SCTP_LOG_CLOSING
4760 sctp_log_closing(inp, stcb, 8);
4765 /* now clean up any other timers */
4766 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4767 asoc->dack_timer.self = NULL;
4768 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4770 * For stream reset we don't blast this unless
4771 * it is a str-reset timer, it might be the
4772 * free-asoc timer which we DON'T want to
4775 if (asoc->strreset_timer.type == SCTP_TIMER_TYPE_STRRESET)
4776 asoc->strreset_timer.self = NULL;
4777 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4778 asoc->asconf_timer.self = NULL;
4779 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4780 asoc->autoclose_timer.self = NULL;
4781 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4782 asoc->shut_guard_timer.self = NULL;
4783 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4784 asoc->delayed_event_timer.self = NULL;
4785 /* Mobility adaptation */
4786 (void)SCTP_OS_TIMER_STOP(&asoc->delete_prim_timer.timer);
4787 asoc->delete_prim_timer.self = NULL;
4788 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4789 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4790 net->rxt_timer.self = NULL;
4791 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4792 net->pmtu_timer.self = NULL;
4793 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4794 net->hb_timer.self = NULL;
4796 /* Now the read queue needs to be cleaned up (only once) */
4797 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) {
4798 SCTP_ADD_SUBSTATE(stcb, SCTP_STATE_ABOUT_TO_BE_FREED);
4799 SCTP_INP_READ_LOCK(inp);
4800 TAILQ_FOREACH(sq, &inp->read_queue, next) {
4801 if (sq->stcb == stcb) {
4802 sq->do_not_ref_stcb = 1;
4803 sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
4805 * If there is no end, there never will be
4808 if (sq->end_added == 0) {
4809 /* Held for PD-API clear that. */
4810 sq->pdapi_aborted = 1;
4811 sq->held_length = 0;
4812 if (sctp_stcb_is_feature_on(inp, stcb, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) {
4814 * Need to add a PD-API
4815 * aborted indication.
4816 * Setting the control_pdapi
4817 * assures that it will be
4818 * added right after this
4823 stcb->asoc.control_pdapi = sq;
4824 strseq = (sq->sinfo_stream << 16) | (sq->mid & 0x0000ffff);
4825 sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION,
4827 SCTP_PARTIAL_DELIVERY_ABORTED,
4830 stcb->asoc.control_pdapi = NULL;
4833 /* Add an end to wake them */
4837 SCTP_INP_READ_UNLOCK(inp);
4838 if (stcb->block_entry) {
4839 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET);
4840 stcb->block_entry->error = ECONNRESET;
4841 stcb->block_entry = NULL;
4844 if ((stcb->asoc.refcnt) || (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE)) {
4846 * Someone holds a reference OR the socket is unaccepted
4849 if ((stcb->asoc.refcnt) ||
4850 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4851 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4852 SCTP_CLEAR_SUBSTATE(stcb, SCTP_STATE_IN_ACCEPT_QUEUE);
4853 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4855 SCTP_TCB_UNLOCK(stcb);
4856 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4857 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4858 /* nothing around */
4861 /* Wake any reader/writers */
4862 sctp_sorwakeup(inp, so);
4863 sctp_sowwakeup(inp, so);
4866 #ifdef SCTP_LOG_CLOSING
4867 sctp_log_closing(inp, stcb, 9);
4869 /* no asoc destroyed */
4872 #ifdef SCTP_LOG_CLOSING
4873 sctp_log_closing(inp, stcb, 10);
4876 * When I reach here, no others want to kill the assoc yet.. and I
4877 * own the lock. Now its possible an abort comes in when I do the
4878 * lock exchange below to grab all the locks to do the final take
4879 * out. to prevent this we increment the count, which will start a
4880 * timer and blow out above thus assuring us that we hold exclusive
4881 * killing of the asoc. Note that after getting back the TCB lock we
4882 * will go ahead and increment the counter back up and stop any
4883 * timer a passing stranger may have started :-S
4885 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4886 atomic_add_int(&stcb->asoc.refcnt, 1);
4888 SCTP_TCB_UNLOCK(stcb);
4889 SCTP_INP_INFO_WLOCK();
4890 SCTP_INP_WLOCK(inp);
4891 SCTP_TCB_LOCK(stcb);
4893 /* Double check the GONE flag */
4894 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4895 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4896 /* nothing around */
4899 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
4900 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4902 * For TCP type we need special handling when we are
4903 * connected. We also include the peel'ed off ones to.
4905 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4906 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED;
4907 inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED;
4909 SOCKBUF_LOCK(&so->so_rcv);
4910 so->so_state &= ~(SS_ISCONNECTING |
4911 SS_ISDISCONNECTING |
4914 so->so_state |= SS_ISDISCONNECTED;
4915 socantrcvmore_locked(so);
4917 sctp_sowwakeup(inp, so);
4918 sctp_sorwakeup(inp, so);
4925 * Make it invalid too, that way if its about to run it will abort
4928 /* re-increment the lock */
4929 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4930 atomic_add_int(&stcb->asoc.refcnt, -1);
4932 if (stcb->asoc.refcnt) {
4933 SCTP_CLEAR_SUBSTATE(stcb, SCTP_STATE_IN_ACCEPT_QUEUE);
4934 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4935 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4936 SCTP_INP_INFO_WUNLOCK();
4937 SCTP_INP_WUNLOCK(inp);
4939 SCTP_TCB_UNLOCK(stcb);
4943 if (inp->sctp_tcbhash) {
4944 LIST_REMOVE(stcb, sctp_tcbhash);
4946 if (stcb->asoc.in_asocid_hash) {
4947 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4949 /* Now lets remove it from the list of ALL associations in the EP */
4950 LIST_REMOVE(stcb, sctp_tcblist);
4951 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4952 SCTP_INP_INCR_REF(inp);
4953 SCTP_INP_WUNLOCK(inp);
4955 /* pull from vtag hash */
4956 LIST_REMOVE(stcb, sctp_asocs);
4957 sctp_add_vtag_to_timewait(asoc->my_vtag, SCTP_BASE_SYSCTL(sctp_vtag_time_wait),
4958 inp->sctp_lport, stcb->rport);
4961 * Now restop the timers to be sure this is paranoia at is finest!
4963 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4964 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4965 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4966 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4967 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4968 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4969 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4970 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4971 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4972 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4973 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4976 asoc->strreset_timer.type = SCTP_TIMER_TYPE_NONE;
4978 * The chunk lists and such SHOULD be empty but we check them just
4981 /* anything on the wheel needs to be removed */
4982 SCTP_TCB_SEND_LOCK(stcb);
4983 for (i = 0; i < asoc->streamoutcnt; i++) {
4984 struct sctp_stream_out *outs;
4986 outs = &asoc->strmout[i];
4987 /* now clean up any chunks here */
4988 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
4989 atomic_subtract_int(&asoc->stream_queue_cnt, 1);
4990 TAILQ_REMOVE(&outs->outqueue, sp, next);
4991 stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, outs, sp, 1);
4992 sctp_free_spbufspace(stcb, asoc, sp);
4995 /* Still an open socket - report */
4996 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
4997 0, (void *)sp, SCTP_SO_LOCKED);
5000 sctp_m_freem(sp->data);
5002 sp->tail_mbuf = NULL;
5007 sctp_free_remote_addr(sp->net);
5010 sctp_free_a_strmoq(stcb, sp, SCTP_SO_LOCKED);
5013 SCTP_TCB_SEND_UNLOCK(stcb);
5014 /* sa_ignore FREED_MEMORY */
5015 TAILQ_FOREACH_SAFE(strrst, &asoc->resetHead, next_resp, nstrrst) {
5016 TAILQ_REMOVE(&asoc->resetHead, strrst, next_resp);
5017 SCTP_FREE(strrst, SCTP_M_STRESET);
5019 TAILQ_FOREACH_SAFE(sq, &asoc->pending_reply_queue, next, nsq) {
5020 TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
5022 sctp_m_freem(sq->data);
5025 sctp_free_remote_addr(sq->whoFrom);
5028 /* Free the ctl entry */
5029 sctp_free_a_readq(stcb, sq);
5030 /* sa_ignore FREED_MEMORY */
5032 TAILQ_FOREACH_SAFE(chk, &asoc->free_chunks, sctp_next, nchk) {
5033 TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next);
5035 sctp_m_freem(chk->data);
5038 if (chk->holds_key_ref)
5039 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5040 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5041 SCTP_DECR_CHK_COUNT();
5042 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1);
5043 asoc->free_chunk_cnt--;
5044 /* sa_ignore FREED_MEMORY */
5046 /* pending send queue SHOULD be empty */
5047 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
5048 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
5049 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
5052 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
5055 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
5058 /* Still a socket? */
5059 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
5060 0, chk, SCTP_SO_LOCKED);
5063 sctp_m_freem(chk->data);
5067 if (chk->holds_key_ref)
5068 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5070 sctp_free_remote_addr(chk->whoTo);
5073 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5074 SCTP_DECR_CHK_COUNT();
5075 /* sa_ignore FREED_MEMORY */
5077 /* sent queue SHOULD be empty */
5078 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
5079 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
5080 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
5081 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
5084 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
5088 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
5091 /* Still a socket? */
5092 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
5093 0, chk, SCTP_SO_LOCKED);
5096 sctp_m_freem(chk->data);
5100 if (chk->holds_key_ref)
5101 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5102 sctp_free_remote_addr(chk->whoTo);
5103 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5104 SCTP_DECR_CHK_COUNT();
5105 /* sa_ignore FREED_MEMORY */
5108 for (i = 0; i < stcb->asoc.streamoutcnt; i++) {
5109 if (stcb->asoc.strmout[i].chunks_on_queues > 0) {
5110 panic("%u chunks left for stream %u.", stcb->asoc.strmout[i].chunks_on_queues, i);
5114 /* control queue MAY not be empty */
5115 TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) {
5116 TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next);
5118 sctp_m_freem(chk->data);
5121 if (chk->holds_key_ref)
5122 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5123 sctp_free_remote_addr(chk->whoTo);
5124 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5125 SCTP_DECR_CHK_COUNT();
5126 /* sa_ignore FREED_MEMORY */
5128 /* ASCONF queue MAY not be empty */
5129 TAILQ_FOREACH_SAFE(chk, &asoc->asconf_send_queue, sctp_next, nchk) {
5130 TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next);
5132 sctp_m_freem(chk->data);
5135 if (chk->holds_key_ref)
5136 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5137 sctp_free_remote_addr(chk->whoTo);
5138 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5139 SCTP_DECR_CHK_COUNT();
5140 /* sa_ignore FREED_MEMORY */
5142 if (asoc->mapping_array) {
5143 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
5144 asoc->mapping_array = NULL;
5146 if (asoc->nr_mapping_array) {
5147 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
5148 asoc->nr_mapping_array = NULL;
5150 /* the stream outs */
5151 if (asoc->strmout) {
5152 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
5153 asoc->strmout = NULL;
5155 asoc->strm_realoutsize = asoc->streamoutcnt = 0;
5157 for (i = 0; i < asoc->streamincnt; i++) {
5158 sctp_clean_up_stream(stcb, &asoc->strmin[i].inqueue);
5159 sctp_clean_up_stream(stcb, &asoc->strmin[i].uno_inqueue);
5161 SCTP_FREE(asoc->strmin, SCTP_M_STRMI);
5162 asoc->strmin = NULL;
5164 asoc->streamincnt = 0;
5165 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
5167 if (SCTP_BASE_INFO(ipi_count_raddr) == 0) {
5168 panic("no net's left alloc'ed, or list points to itself");
5171 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
5172 sctp_free_remote_addr(net);
5174 LIST_FOREACH_SAFE(laddr, &asoc->sctp_restricted_addrs, sctp_nxt_addr, naddr) {
5175 /* sa_ignore FREED_MEMORY */
5176 sctp_remove_laddr(laddr);
5179 /* pending asconf (address) parameters */
5180 TAILQ_FOREACH_SAFE(aparam, &asoc->asconf_queue, next, naparam) {
5181 /* sa_ignore FREED_MEMORY */
5182 TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
5183 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
5185 TAILQ_FOREACH_SAFE(aack, &asoc->asconf_ack_sent, next, naack) {
5186 /* sa_ignore FREED_MEMORY */
5187 TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
5188 if (aack->data != NULL) {
5189 sctp_m_freem(aack->data);
5191 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
5193 /* clean up auth stuff */
5194 if (asoc->local_hmacs)
5195 sctp_free_hmaclist(asoc->local_hmacs);
5196 if (asoc->peer_hmacs)
5197 sctp_free_hmaclist(asoc->peer_hmacs);
5199 if (asoc->local_auth_chunks)
5200 sctp_free_chunklist(asoc->local_auth_chunks);
5201 if (asoc->peer_auth_chunks)
5202 sctp_free_chunklist(asoc->peer_auth_chunks);
5204 sctp_free_authinfo(&asoc->authinfo);
5206 LIST_FOREACH_SAFE(shared_key, &asoc->shared_keys, next, nshared_key) {
5207 LIST_REMOVE(shared_key, next);
5208 sctp_free_sharedkey(shared_key);
5209 /* sa_ignore FREED_MEMORY */
5212 /* Insert new items here :> */
5214 /* Get rid of LOCK */
5215 SCTP_TCB_UNLOCK(stcb);
5216 SCTP_TCB_LOCK_DESTROY(stcb);
5217 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
5218 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5219 SCTP_INP_INFO_WUNLOCK();
5220 SCTP_INP_RLOCK(inp);
5222 #ifdef SCTP_TRACK_FREED_ASOCS
5223 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5224 /* now clean up the tasoc itself */
5225 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5226 SCTP_DECR_ASOC_COUNT();
5228 LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist);
5231 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5232 SCTP_DECR_ASOC_COUNT();
5234 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5235 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5237 * If its NOT the inp_free calling us AND sctp_close
5238 * as been called, we call back...
5240 SCTP_INP_RUNLOCK(inp);
5242 * This will start the kill timer (if we are the
5243 * last one) since we hold an increment yet. But
5244 * this is the only safe way to do this since
5245 * otherwise if the socket closes at the same time
5246 * we are here we might collide in the cleanup.
5248 sctp_inpcb_free(inp,
5249 SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
5250 SCTP_CALLED_DIRECTLY_NOCMPSET);
5251 SCTP_INP_DECR_REF(inp);
5254 /* The socket is still open. */
5255 SCTP_INP_DECR_REF(inp);
5258 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5259 SCTP_INP_RUNLOCK(inp);
5262 /* destroyed the asoc */
5263 #ifdef SCTP_LOG_CLOSING
5264 sctp_log_closing(inp, NULL, 11);
5272 * determine if a destination is "reachable" based upon the addresses bound
5273 * to the current endpoint (e.g. only v4 or v6 currently bound)
5276 * FIX: if we allow assoc-level bindx(), then this needs to be fixed to use
5277 * assoc level v4/v6 flags, as the assoc *may* not have the same address
5278 * types bound as its endpoint
5281 sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
5283 struct sctp_inpcb *inp;
5287 * No locks here, the TCB, in all cases is already locked and an
5288 * assoc is up. There is either a INP lock by the caller applied (in
5289 * asconf case when deleting an address) or NOT in the HB case,
5290 * however if HB then the INP increment is up and the INP will not
5291 * be removed (on top of the fact that we have a TCB lock). So we
5292 * only want to read the sctp_flags, which is either bound-all or
5293 * not.. no protection needed since once an assoc is up you can't be
5294 * changing your binding.
5296 inp = stcb->sctp_ep;
5297 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5298 /* if bound all, destination is not restricted */
5300 * RRS: Question during lock work: Is this correct? If you
5301 * are bound-all you still might need to obey the V4--V6
5302 * flags??? IMO this bound-all stuff needs to be removed!
5306 /* NOTE: all "scope" checks are done when local addresses are added */
5307 switch (destaddr->sa_family) {
5310 answer = inp->ip_inp.inp.inp_vflag & INP_IPV6;
5315 answer = inp->ip_inp.inp.inp_vflag & INP_IPV4;
5319 /* invalid family, so it's unreachable */
5327 * update the inp_vflags on an endpoint
5330 sctp_update_ep_vflag(struct sctp_inpcb *inp)
5332 struct sctp_laddr *laddr;
5334 /* first clear the flag */
5335 inp->ip_inp.inp.inp_vflag = 0;
5336 /* set the flag based on addresses on the ep list */
5337 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5338 if (laddr->ifa == NULL) {
5339 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
5344 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
5347 switch (laddr->ifa->address.sa.sa_family) {
5350 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5355 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5365 * Add the address to the endpoint local address list There is nothing to be
5366 * done if we are bound to all addresses
5369 sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
5371 struct sctp_laddr *laddr;
5372 struct sctp_tcb *stcb;
5377 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5378 /* You are already bound to all. You have it already */
5382 if (ifa->address.sa.sa_family == AF_INET6) {
5383 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5384 /* Can't bind a non-useable addr. */
5389 /* first, is it already present? */
5390 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5391 if (laddr->ifa == ifa) {
5398 /* Not in the ep list */
5399 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action);
5403 /* update inp_vflag flags */
5404 switch (ifa->address.sa.sa_family) {
5407 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5412 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5418 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5419 sctp_add_local_addr_restricted(stcb, ifa);
5427 * select a new (hopefully reachable) destination net (should only be used
5428 * when we deleted an ep addr that is the only usable source address to reach
5429 * the destination net)
5432 sctp_select_primary_destination(struct sctp_tcb *stcb)
5434 struct sctp_nets *net;
5436 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5437 /* for now, we'll just pick the first reachable one we find */
5438 if (net->dest_state & SCTP_ADDR_UNCONFIRMED)
5440 if (sctp_destination_is_reachable(stcb,
5441 (struct sockaddr *)&net->ro._l_addr)) {
5442 /* found a reachable destination */
5443 stcb->asoc.primary_destination = net;
5446 /* I can't there from here! ...we're gonna die shortly... */
5451 * Delete the address from the endpoint local address list. There is nothing
5452 * to be done if we are bound to all addresses
5455 sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa)
5457 struct sctp_laddr *laddr;
5461 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5462 /* You are already bound to all. You have it already */
5465 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5466 if (laddr->ifa == ifa) {
5471 if (fnd && (inp->laddr_count < 2)) {
5472 /* can't delete unless there are at LEAST 2 addresses */
5477 * clean up any use of this address go through our
5478 * associations and clear any last_used_address that match
5479 * this one for each assoc, see if a new primary_destination
5482 struct sctp_tcb *stcb;
5484 /* clean up "next_addr_touse" */
5485 if (inp->next_addr_touse == laddr)
5486 /* delete this address */
5487 inp->next_addr_touse = NULL;
5489 /* clean up "last_used_address" */
5490 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5491 struct sctp_nets *net;
5493 SCTP_TCB_LOCK(stcb);
5494 if (stcb->asoc.last_used_address == laddr)
5495 /* delete this address */
5496 stcb->asoc.last_used_address = NULL;
5498 * Now spin through all the nets and purge any ref
5501 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5502 if (net->ro._s_addr == laddr->ifa) {
5503 /* Yep, purge src address selected */
5506 /* delete this address if cached */
5510 net->ro.ro_rt = NULL;
5512 sctp_free_ifa(net->ro._s_addr);
5513 net->ro._s_addr = NULL;
5514 net->src_addr_selected = 0;
5517 SCTP_TCB_UNLOCK(stcb);
5518 } /* for each tcb */
5519 /* remove it from the ep list */
5520 sctp_remove_laddr(laddr);
5522 /* update inp_vflag flags */
5523 sctp_update_ep_vflag(inp);
5529 * Add the address to the TCB local address restricted list.
5530 * This is a "pending" address list (eg. addresses waiting for an
5531 * ASCONF-ACK response) and cannot be used as a valid source address.
5534 sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5536 struct sctp_laddr *laddr;
5537 struct sctpladdr *list;
5540 * Assumes TCB is locked.. and possibly the INP. May need to
5541 * confirm/fix that if we need it and is not the case.
5543 list = &stcb->asoc.sctp_restricted_addrs;
5546 if (ifa->address.sa.sa_family == AF_INET6) {
5547 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5548 /* Can't bind a non-existent addr. */
5553 /* does the address already exist? */
5554 LIST_FOREACH(laddr, list, sctp_nxt_addr) {
5555 if (laddr->ifa == ifa) {
5560 /* add to the list */
5561 (void)sctp_insert_laddr(list, ifa, 0);
5566 * Remove a local address from the TCB local address restricted list
5569 sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5571 struct sctp_inpcb *inp;
5572 struct sctp_laddr *laddr;
5575 * This is called by asconf work. It is assumed that a) The TCB is
5576 * locked and b) The INP is locked. This is true in as much as I can
5577 * trace through the entry asconf code where I did these locks.
5578 * Again, the ASCONF code is a bit different in that it does lock
5579 * the INP during its work often times. This must be since we don't
5580 * want other proc's looking up things while what they are looking
5581 * up is changing :-D
5584 inp = stcb->sctp_ep;
5585 /* if subset bound and don't allow ASCONF's, can't delete last */
5586 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
5587 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
5588 if (stcb->sctp_ep->laddr_count < 2) {
5589 /* can't delete last address */
5593 LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
5594 /* remove the address if it exists */
5595 if (laddr->ifa == NULL)
5597 if (laddr->ifa == ifa) {
5598 sctp_remove_laddr(laddr);
5603 /* address not found! */
5608 * Temporarily remove for __APPLE__ until we use the Tiger equivalents
5611 static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;
5612 static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR;
5616 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5617 struct sctp_mcore_ctrl *sctp_mcore_workers = NULL;
5618 int *sctp_cpuarry = NULL;
5620 sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use)
5622 /* Queue a packet to a processor for the specified core */
5623 struct sctp_mcore_queue *qent;
5624 struct sctp_mcore_ctrl *wkq;
5627 if (sctp_mcore_workers == NULL) {
5628 /* Something went way bad during setup */
5629 sctp_input_with_port(m, off, 0);
5632 SCTP_MALLOC(qent, struct sctp_mcore_queue *,
5633 (sizeof(struct sctp_mcore_queue)),
5636 /* This is trouble */
5637 sctp_input_with_port(m, off, 0);
5644 wkq = &sctp_mcore_workers[cpu_to_use];
5645 SCTP_MCORE_QLOCK(wkq);
5647 TAILQ_INSERT_TAIL(&wkq->que, qent, next);
5648 if (wkq->running == 0) {
5651 SCTP_MCORE_QUNLOCK(wkq);
5653 wakeup(&wkq->running);
5658 sctp_mcore_thread(void *arg)
5661 struct sctp_mcore_ctrl *wkq;
5662 struct sctp_mcore_queue *qent;
5664 wkq = (struct sctp_mcore_ctrl *)arg;
5668 /* Wait for first tickle */
5669 SCTP_MCORE_LOCK(wkq);
5671 msleep(&wkq->running,
5673 0, "wait for pkt", 0);
5674 SCTP_MCORE_UNLOCK(wkq);
5676 /* Bind to our cpu */
5677 thread_lock(curthread);
5678 sched_bind(curthread, wkq->cpuid);
5679 thread_unlock(curthread);
5681 /* Now lets start working */
5682 SCTP_MCORE_LOCK(wkq);
5683 /* Now grab lock and go */
5685 SCTP_MCORE_QLOCK(wkq);
5688 qent = TAILQ_FIRST(&wkq->que);
5690 TAILQ_REMOVE(&wkq->que, qent, next);
5691 SCTP_MCORE_QUNLOCK(wkq);
5692 CURVNET_SET(qent->vn);
5696 SCTP_FREE(qent, SCTP_M_MCORE);
5698 sctp_input_with_port(m, off, 0);
5700 SCTP_PRINTF("V6 not yet supported\n");
5704 SCTP_MCORE_QLOCK(wkq);
5707 if (!TAILQ_EMPTY(&wkq->que)) {
5710 SCTP_MCORE_QUNLOCK(wkq);
5711 msleep(&wkq->running,
5713 0, "wait for pkt", 0);
5718 sctp_startup_mcore_threads(void)
5725 if (sctp_mcore_workers != NULL) {
5727 * Already been here in some previous vnet?
5731 SCTP_MALLOC(sctp_mcore_workers, struct sctp_mcore_ctrl *,
5732 ((mp_maxid + 1) * sizeof(struct sctp_mcore_ctrl)),
5734 if (sctp_mcore_workers == NULL) {
5738 memset(sctp_mcore_workers, 0, ((mp_maxid + 1) *
5739 sizeof(struct sctp_mcore_ctrl)));
5740 /* Init the structures */
5741 for (i = 0; i <= mp_maxid; i++) {
5742 TAILQ_INIT(&sctp_mcore_workers[i].que);
5743 SCTP_MCORE_LOCK_INIT(&sctp_mcore_workers[i]);
5744 SCTP_MCORE_QLOCK_INIT(&sctp_mcore_workers[i]);
5745 sctp_mcore_workers[i].cpuid = i;
5747 if (sctp_cpuarry == NULL) {
5748 SCTP_MALLOC(sctp_cpuarry, int *,
5749 (mp_ncpus * sizeof(int)),
5753 sctp_cpuarry[i] = cpu;
5758 /* Now start them all */
5760 (void)kproc_create(sctp_mcore_thread,
5761 (void *)&sctp_mcore_workers[cpu],
5762 &sctp_mcore_workers[cpu].thread_proc,
5775 * SCTP initialization for the PCB structures should be called by
5776 * the sctp_init() function.
5781 if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) {
5782 /* error I was called twice */
5785 SCTP_BASE_VAR(sctp_pcb_initialized) = 1;
5787 #if defined(SCTP_LOCAL_TRACE_BUF)
5788 memset(&SCTP_BASE_SYSCTL(sctp_log), 0, sizeof(struct sctp_log));
5790 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5791 SCTP_MALLOC(SCTP_BASE_STATS, struct sctpstat *,
5792 ((mp_maxid + 1) * sizeof(struct sctpstat)),
5795 (void)SCTP_GETTIME_TIMEVAL(&tv);
5796 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5797 memset(SCTP_BASE_STATS, 0, sizeof(struct sctpstat) * (mp_maxid + 1));
5798 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t)tv.tv_sec;
5799 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t)tv.tv_usec;
5801 memset(&SCTP_BASE_STATS, 0, sizeof(struct sctpstat));
5802 SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t)tv.tv_sec;
5803 SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t)tv.tv_usec;
5805 /* init the empty list of (All) Endpoints */
5806 LIST_INIT(&SCTP_BASE_INFO(listhead));
5809 /* init the hash table of endpoints */
5810 TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize));
5811 TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize));
5812 TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale));
5813 SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31),
5814 &SCTP_BASE_INFO(hashasocmark));
5815 SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5816 &SCTP_BASE_INFO(hashmark));
5817 SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5818 &SCTP_BASE_INFO(hashtcpmark));
5819 SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize);
5822 SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH,
5823 &SCTP_BASE_INFO(hashvrfmark));
5825 SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE,
5826 &SCTP_BASE_INFO(vrf_ifn_hashmark));
5827 /* init the zones */
5829 * FIX ME: Should check for NULL returns, but if it does fail we are
5830 * doomed to panic anyways... add later maybe.
5832 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep",
5833 sizeof(struct sctp_inpcb), maxsockets);
5835 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc",
5836 sizeof(struct sctp_tcb), sctp_max_number_of_assoc);
5838 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr",
5839 sizeof(struct sctp_laddr),
5840 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5842 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr",
5843 sizeof(struct sctp_nets),
5844 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5846 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk",
5847 sizeof(struct sctp_tmit_chunk),
5848 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5850 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq",
5851 sizeof(struct sctp_queued_to_read),
5852 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5854 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out",
5855 sizeof(struct sctp_stream_queue_pending),
5856 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5858 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf",
5859 sizeof(struct sctp_asconf),
5860 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5862 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack",
5863 sizeof(struct sctp_asconf_ack),
5864 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5867 /* Master Lock INIT for info structure */
5868 SCTP_INP_INFO_LOCK_INIT();
5869 SCTP_STATLOG_INIT_LOCK();
5871 SCTP_IPI_COUNT_INIT();
5872 SCTP_IPI_ADDR_INIT();
5873 #ifdef SCTP_PACKET_LOGGING
5874 SCTP_IP_PKTLOG_INIT();
5876 LIST_INIT(&SCTP_BASE_INFO(addr_wq));
5878 SCTP_WQ_ADDR_INIT();
5879 /* not sure if we need all the counts */
5880 SCTP_BASE_INFO(ipi_count_ep) = 0;
5881 /* assoc/tcb zone info */
5882 SCTP_BASE_INFO(ipi_count_asoc) = 0;
5883 /* local addrlist zone info */
5884 SCTP_BASE_INFO(ipi_count_laddr) = 0;
5885 /* remote addrlist zone info */
5886 SCTP_BASE_INFO(ipi_count_raddr) = 0;
5888 SCTP_BASE_INFO(ipi_count_chunk) = 0;
5890 /* socket queue zone info */
5891 SCTP_BASE_INFO(ipi_count_readq) = 0;
5893 /* stream out queue cont */
5894 SCTP_BASE_INFO(ipi_count_strmoq) = 0;
5896 SCTP_BASE_INFO(ipi_free_strmoq) = 0;
5897 SCTP_BASE_INFO(ipi_free_chunks) = 0;
5899 SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer));
5901 /* Init the TIMEWAIT list */
5902 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5903 LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]);
5905 sctp_startup_iterator();
5907 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5908 sctp_startup_mcore_threads();
5912 * INIT the default VRF which for BSD is the only one, other O/S's
5913 * may have more. But initially they must start with one and then
5914 * add the VRF's as addresses are added.
5916 sctp_init_vrf_list(SCTP_DEFAULT_VRF);
5920 * Assumes that the SCTP_BASE_INFO() lock is NOT held.
5923 sctp_pcb_finish(void)
5925 struct sctp_vrflist *vrf_bucket;
5926 struct sctp_vrf *vrf, *nvrf;
5927 struct sctp_ifn *ifn, *nifn;
5928 struct sctp_ifa *ifa, *nifa;
5929 struct sctpvtaghead *chain;
5930 struct sctp_tagblock *twait_block, *prev_twait_block;
5931 struct sctp_laddr *wi, *nwi;
5933 struct sctp_iterator *it, *nit;
5935 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
5936 SCTP_PRINTF("%s: race condition on teardown.\n", __func__);
5939 SCTP_BASE_VAR(sctp_pcb_initialized) = 0;
5941 * In FreeBSD the iterator thread never exits but we do clean up.
5942 * The only way FreeBSD reaches here is if we have VRF's but we
5943 * still add the ifdef to make it compile on old versions.
5946 SCTP_IPI_ITERATOR_WQ_LOCK();
5948 * sctp_iterator_worker() might be working on an it entry without
5949 * holding the lock. We won't find it on the list either and
5950 * continue and free/destroy it. While holding the lock, spin, to
5951 * avoid the race condition as sctp_iterator_worker() will have to
5952 * wait to re-aquire the lock.
5954 if (sctp_it_ctl.iterator_running != 0 || sctp_it_ctl.cur_it != NULL) {
5955 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5956 SCTP_PRINTF("%s: Iterator running while we held the lock. Retry. "
5957 "cur_it=%p\n", __func__, sctp_it_ctl.cur_it);
5961 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
5962 if (it->vn != curvnet) {
5965 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
5966 if (it->function_atend != NULL) {
5967 (*it->function_atend) (it->pointer, it->val);
5969 SCTP_FREE(it, SCTP_M_ITER);
5971 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5972 SCTP_ITERATOR_LOCK();
5973 if ((sctp_it_ctl.cur_it) &&
5974 (sctp_it_ctl.cur_it->vn == curvnet)) {
5975 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
5977 SCTP_ITERATOR_UNLOCK();
5978 SCTP_OS_TIMER_STOP_DRAIN(&SCTP_BASE_INFO(addr_wq_timer.timer));
5979 SCTP_WQ_ADDR_LOCK();
5980 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
5981 LIST_REMOVE(wi, sctp_nxt_addr);
5982 SCTP_DECR_LADDR_COUNT();
5983 if (wi->action == SCTP_DEL_IP_ADDRESS) {
5984 SCTP_FREE(wi->ifa, SCTP_M_IFA);
5986 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi);
5988 SCTP_WQ_ADDR_UNLOCK();
5991 * free the vrf/ifn/ifa lists and hashes (be sure address monitor is
5994 vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))];
5995 LIST_FOREACH_SAFE(vrf, vrf_bucket, next_vrf, nvrf) {
5996 LIST_FOREACH_SAFE(ifn, &vrf->ifnlist, next_ifn, nifn) {
5997 LIST_FOREACH_SAFE(ifa, &ifn->ifalist, next_ifa, nifa) {
5999 LIST_REMOVE(ifa, next_bucket);
6000 LIST_REMOVE(ifa, next_ifa);
6001 SCTP_FREE(ifa, SCTP_M_IFA);
6004 LIST_REMOVE(ifn, next_bucket);
6005 LIST_REMOVE(ifn, next_ifn);
6006 SCTP_FREE(ifn, SCTP_M_IFN);
6008 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
6010 LIST_REMOVE(vrf, next_vrf);
6011 SCTP_FREE(vrf, SCTP_M_VRF);
6013 /* free the vrf hashes */
6014 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark));
6015 SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark));
6018 * free the TIMEWAIT list elements malloc'd in the function
6019 * sctp_add_vtag_to_timewait()...
6021 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
6022 chain = &SCTP_BASE_INFO(vtag_timewait)[i];
6023 if (!LIST_EMPTY(chain)) {
6024 prev_twait_block = NULL;
6025 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6026 if (prev_twait_block) {
6027 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
6029 prev_twait_block = twait_block;
6031 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
6035 /* free the locks and mutexes */
6036 #ifdef SCTP_PACKET_LOGGING
6037 SCTP_IP_PKTLOG_DESTROY();
6039 SCTP_IPI_ADDR_DESTROY();
6040 SCTP_STATLOG_DESTROY();
6041 SCTP_INP_INFO_LOCK_DESTROY();
6043 SCTP_WQ_ADDR_DESTROY();
6045 /* Get rid of other stuff too. */
6046 if (SCTP_BASE_INFO(sctp_asochash) != NULL)
6047 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark));
6048 if (SCTP_BASE_INFO(sctp_ephash) != NULL)
6049 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark));
6050 if (SCTP_BASE_INFO(sctp_tcpephash) != NULL)
6051 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark));
6053 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep));
6054 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc));
6055 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr));
6056 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net));
6057 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk));
6058 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq));
6059 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq));
6060 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf));
6061 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack));
6062 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
6063 SCTP_FREE(SCTP_BASE_STATS, SCTP_M_MCORE);
6069 sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m,
6070 int offset, int limit,
6071 struct sockaddr *src, struct sockaddr *dst,
6072 struct sockaddr *altsa, uint16_t port)
6075 * grub through the INIT pulling addresses and loading them to the
6076 * nets structure in the asoc. The from address in the mbuf should
6077 * also be loaded (if it is not already). This routine can be called
6078 * with either INIT or INIT-ACK's as long as the m points to the IP
6079 * packet and the offset points to the beginning of the parameters.
6081 struct sctp_inpcb *inp;
6082 struct sctp_nets *net, *nnet, *net_tmp;
6083 struct sctp_paramhdr *phdr, param_buf;
6084 struct sctp_tcb *stcb_tmp;
6085 uint16_t ptype, plen;
6086 struct sockaddr *sa;
6087 uint8_t random_store[SCTP_PARAM_BUFFER_SIZE];
6088 struct sctp_auth_random *p_random = NULL;
6089 uint16_t random_len = 0;
6090 uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE];
6091 struct sctp_auth_hmac_algo *hmacs = NULL;
6092 uint16_t hmacs_len = 0;
6093 uint8_t saw_asconf = 0;
6094 uint8_t saw_asconf_ack = 0;
6095 uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE];
6096 struct sctp_auth_chunk_list *chunks = NULL;
6097 uint16_t num_chunks = 0;
6098 sctp_key_t *new_key;
6100 int got_random = 0, got_hmacs = 0, got_chklist = 0;
6101 uint8_t peer_supports_ecn;
6102 uint8_t peer_supports_prsctp;
6103 uint8_t peer_supports_auth;
6104 uint8_t peer_supports_asconf;
6105 uint8_t peer_supports_asconf_ack;
6106 uint8_t peer_supports_reconfig;
6107 uint8_t peer_supports_nrsack;
6108 uint8_t peer_supports_pktdrop;
6109 uint8_t peer_supports_idata;
6111 struct sockaddr_in sin;
6114 struct sockaddr_in6 sin6;
6117 /* First get the destination address setup too. */
6119 memset(&sin, 0, sizeof(sin));
6120 sin.sin_family = AF_INET;
6121 sin.sin_len = sizeof(sin);
6122 sin.sin_port = stcb->rport;
6125 memset(&sin6, 0, sizeof(sin6));
6126 sin6.sin6_family = AF_INET6;
6127 sin6.sin6_len = sizeof(struct sockaddr_in6);
6128 sin6.sin6_port = stcb->rport;
6135 peer_supports_idata = 0;
6136 peer_supports_ecn = 0;
6137 peer_supports_prsctp = 0;
6138 peer_supports_auth = 0;
6139 peer_supports_asconf = 0;
6140 peer_supports_reconfig = 0;
6141 peer_supports_nrsack = 0;
6142 peer_supports_pktdrop = 0;
6143 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
6144 /* mark all addresses that we have currently on the list */
6145 net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC;
6147 /* does the source address already exist? if so skip it */
6148 inp = stcb->sctp_ep;
6149 atomic_add_int(&stcb->asoc.refcnt, 1);
6150 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, dst, stcb);
6151 atomic_add_int(&stcb->asoc.refcnt, -1);
6153 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) {
6154 /* we must add the source address */
6155 /* no scope set here since we have a tcb already. */
6156 switch (sa->sa_family) {
6159 if (stcb->asoc.scope.ipv4_addr_legal) {
6160 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) {
6168 if (stcb->asoc.scope.ipv6_addr_legal) {
6169 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
6179 if (net_tmp != NULL && stcb_tmp == stcb) {
6180 net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC;
6181 } else if (stcb_tmp != stcb) {
6182 /* It belongs to another association? */
6184 SCTP_TCB_UNLOCK(stcb_tmp);
6188 if (stcb->asoc.state == 0) {
6189 /* the assoc was freed? */
6192 /* now we must go through each of the params. */
6193 phdr = sctp_get_next_param(m, offset, ¶m_buf, sizeof(param_buf));
6195 ptype = ntohs(phdr->param_type);
6196 plen = ntohs(phdr->param_length);
6198 * SCTP_PRINTF("ptype => %0x, plen => %d\n",
6199 * (uint32_t)ptype, (int)plen);
6201 if (offset + plen > limit) {
6208 if (ptype == SCTP_IPV4_ADDRESS) {
6209 if (stcb->asoc.scope.ipv4_addr_legal) {
6210 struct sctp_ipv4addr_param *p4, p4_buf;
6212 /* ok get the v4 address and check/add */
6213 phdr = sctp_get_next_param(m, offset,
6214 (struct sctp_paramhdr *)&p4_buf,
6216 if (plen != sizeof(struct sctp_ipv4addr_param) ||
6220 p4 = (struct sctp_ipv4addr_param *)phdr;
6221 sin.sin_addr.s_addr = p4->addr;
6222 if (IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) {
6223 /* Skip multi-cast addresses */
6226 if ((sin.sin_addr.s_addr == INADDR_BROADCAST) ||
6227 (sin.sin_addr.s_addr == INADDR_ANY)) {
6230 sa = (struct sockaddr *)&sin;
6231 inp = stcb->sctp_ep;
6232 atomic_add_int(&stcb->asoc.refcnt, 1);
6233 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6235 atomic_add_int(&stcb->asoc.refcnt, -1);
6237 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) ||
6239 /* we must add the source address */
6241 * no scope set since we have a tcb
6246 * we must validate the state again
6250 if (stcb->asoc.state == 0) {
6251 /* the assoc was freed? */
6254 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) {
6257 } else if (stcb_tmp == stcb) {
6258 if (stcb->asoc.state == 0) {
6259 /* the assoc was freed? */
6265 ~SCTP_ADDR_NOT_IN_ASSOC;
6269 * strange, address is in another
6270 * assoc? straighten out locks.
6273 if (SCTP_GET_STATE(stcb_tmp) == SCTP_STATE_COOKIE_WAIT) {
6274 struct mbuf *op_err;
6275 char msg[SCTP_DIAG_INFO_LEN];
6281 snprintf(msg, sizeof(msg),
6282 "%s:%d at %s", __FILE__, __LINE__, __func__);
6283 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
6285 sctp_abort_an_association(stcb_tmp->sctp_ep,
6287 SCTP_SO_NOT_LOCKED);
6290 SCTP_TCB_UNLOCK(stcb_tmp);
6293 if (stcb->asoc.state == 0) {
6294 /* the assoc was freed? */
6303 if (ptype == SCTP_IPV6_ADDRESS) {
6304 if (stcb->asoc.scope.ipv6_addr_legal) {
6305 /* ok get the v6 address and check/add */
6306 struct sctp_ipv6addr_param *p6, p6_buf;
6308 phdr = sctp_get_next_param(m, offset,
6309 (struct sctp_paramhdr *)&p6_buf,
6311 if (plen != sizeof(struct sctp_ipv6addr_param) ||
6315 p6 = (struct sctp_ipv6addr_param *)phdr;
6316 memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
6318 if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) {
6319 /* Skip multi-cast addresses */
6322 if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) {
6324 * Link local make no sense without
6329 sa = (struct sockaddr *)&sin6;
6330 inp = stcb->sctp_ep;
6331 atomic_add_int(&stcb->asoc.refcnt, 1);
6332 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6334 atomic_add_int(&stcb->asoc.refcnt, -1);
6335 if (stcb_tmp == NULL &&
6336 (inp == stcb->sctp_ep || inp == NULL)) {
6338 * we must validate the state again
6342 if (stcb->asoc.state == 0) {
6343 /* the assoc was freed? */
6347 * we must add the address, no scope
6350 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) {
6353 } else if (stcb_tmp == stcb) {
6355 * we must validate the state again
6358 if (stcb->asoc.state == 0) {
6359 /* the assoc was freed? */
6365 ~SCTP_ADDR_NOT_IN_ASSOC;
6369 * strange, address is in another
6370 * assoc? straighten out locks.
6373 if (SCTP_GET_STATE(stcb_tmp) == SCTP_STATE_COOKIE_WAIT) {
6374 struct mbuf *op_err;
6375 char msg[SCTP_DIAG_INFO_LEN];
6381 snprintf(msg, sizeof(msg),
6382 "%s:%d at %s", __FILE__, __LINE__, __func__);
6383 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
6385 sctp_abort_an_association(stcb_tmp->sctp_ep,
6387 SCTP_SO_NOT_LOCKED);
6390 SCTP_TCB_UNLOCK(stcb_tmp);
6392 if (stcb->asoc.state == 0) {
6393 /* the assoc was freed? */
6401 if (ptype == SCTP_ECN_CAPABLE) {
6402 peer_supports_ecn = 1;
6403 } else if (ptype == SCTP_ULP_ADAPTATION) {
6404 if (stcb->asoc.state != SCTP_STATE_OPEN) {
6405 struct sctp_adaptation_layer_indication ai,
6408 phdr = sctp_get_next_param(m, offset,
6409 (struct sctp_paramhdr *)&ai, sizeof(ai));
6410 aip = (struct sctp_adaptation_layer_indication *)phdr;
6412 stcb->asoc.peers_adaptation = ntohl(aip->indication);
6413 stcb->asoc.adaptation_needed = 1;
6416 } else if (ptype == SCTP_SET_PRIM_ADDR) {
6417 struct sctp_asconf_addr_param lstore, *fee;
6419 struct sockaddr *lsa = NULL;
6421 struct sctp_asconf_addrv4_param *fii;
6424 if (stcb->asoc.asconf_supported == 0) {
6427 if (plen > sizeof(lstore)) {
6430 phdr = sctp_get_next_param(m, offset,
6431 (struct sctp_paramhdr *)&lstore,
6436 fee = (struct sctp_asconf_addr_param *)phdr;
6437 lptype = ntohs(fee->addrp.ph.param_type);
6440 case SCTP_IPV4_ADDRESS:
6442 sizeof(struct sctp_asconf_addrv4_param)) {
6443 SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n",
6444 (int)sizeof(struct sctp_asconf_addrv4_param),
6447 fii = (struct sctp_asconf_addrv4_param *)fee;
6448 sin.sin_addr.s_addr = fii->addrp.addr;
6449 lsa = (struct sockaddr *)&sin;
6454 case SCTP_IPV6_ADDRESS:
6456 sizeof(struct sctp_asconf_addr_param)) {
6457 SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n",
6458 (int)sizeof(struct sctp_asconf_addr_param),
6461 memcpy(sin6.sin6_addr.s6_addr,
6463 sizeof(fee->addrp.addr));
6464 lsa = (struct sockaddr *)&sin6;
6472 (void)sctp_set_primary_addr(stcb, sa, NULL);
6474 } else if (ptype == SCTP_HAS_NAT_SUPPORT) {
6475 stcb->asoc.peer_supports_nat = 1;
6476 } else if (ptype == SCTP_PRSCTP_SUPPORTED) {
6477 /* Peer supports pr-sctp */
6478 peer_supports_prsctp = 1;
6479 } else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) {
6480 /* A supported extension chunk */
6481 struct sctp_supported_chunk_types_param *pr_supported;
6482 uint8_t local_store[SCTP_PARAM_BUFFER_SIZE];
6485 if (plen > sizeof(local_store)) {
6488 phdr = sctp_get_next_param(m, offset,
6489 (struct sctp_paramhdr *)&local_store, plen);
6493 pr_supported = (struct sctp_supported_chunk_types_param *)phdr;
6494 num_ent = plen - sizeof(struct sctp_paramhdr);
6495 for (i = 0; i < num_ent; i++) {
6496 switch (pr_supported->chunk_types[i]) {
6498 peer_supports_asconf = 1;
6500 case SCTP_ASCONF_ACK:
6501 peer_supports_asconf_ack = 1;
6503 case SCTP_FORWARD_CUM_TSN:
6504 peer_supports_prsctp = 1;
6506 case SCTP_PACKET_DROPPED:
6507 peer_supports_pktdrop = 1;
6509 case SCTP_NR_SELECTIVE_ACK:
6510 peer_supports_nrsack = 1;
6512 case SCTP_STREAM_RESET:
6513 peer_supports_reconfig = 1;
6515 case SCTP_AUTHENTICATION:
6516 peer_supports_auth = 1;
6519 peer_supports_idata = 1;
6522 /* one I have not learned yet */
6527 } else if (ptype == SCTP_RANDOM) {
6528 if (plen > sizeof(random_store))
6531 /* already processed a RANDOM */
6534 phdr = sctp_get_next_param(m, offset,
6535 (struct sctp_paramhdr *)random_store,
6539 p_random = (struct sctp_auth_random *)phdr;
6540 random_len = plen - sizeof(*p_random);
6541 /* enforce the random length */
6542 if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) {
6543 SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n");
6547 } else if (ptype == SCTP_HMAC_LIST) {
6551 if (plen > sizeof(hmacs_store))
6554 /* already processed a HMAC list */
6557 phdr = sctp_get_next_param(m, offset,
6558 (struct sctp_paramhdr *)hmacs_store,
6562 hmacs = (struct sctp_auth_hmac_algo *)phdr;
6563 hmacs_len = plen - sizeof(*hmacs);
6564 num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]);
6565 /* validate the hmac list */
6566 if (sctp_verify_hmac_param(hmacs, num_hmacs)) {
6569 if (stcb->asoc.peer_hmacs != NULL)
6570 sctp_free_hmaclist(stcb->asoc.peer_hmacs);
6571 stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs);
6572 if (stcb->asoc.peer_hmacs != NULL) {
6573 for (i = 0; i < num_hmacs; i++) {
6574 (void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs,
6575 ntohs(hmacs->hmac_ids[i]));
6579 } else if (ptype == SCTP_CHUNK_LIST) {
6582 if (plen > sizeof(chunks_store))
6585 /* already processed a Chunks list */
6588 phdr = sctp_get_next_param(m, offset,
6589 (struct sctp_paramhdr *)chunks_store,
6593 chunks = (struct sctp_auth_chunk_list *)phdr;
6594 num_chunks = plen - sizeof(*chunks);
6595 if (stcb->asoc.peer_auth_chunks != NULL)
6596 sctp_clear_chunklist(stcb->asoc.peer_auth_chunks);
6598 stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist();
6599 for (i = 0; i < num_chunks; i++) {
6600 (void)sctp_auth_add_chunk(chunks->chunk_types[i],
6601 stcb->asoc.peer_auth_chunks);
6602 /* record asconf/asconf-ack if listed */
6603 if (chunks->chunk_types[i] == SCTP_ASCONF)
6605 if (chunks->chunk_types[i] == SCTP_ASCONF_ACK)
6610 } else if ((ptype == SCTP_HEARTBEAT_INFO) ||
6611 (ptype == SCTP_STATE_COOKIE) ||
6612 (ptype == SCTP_UNRECOG_PARAM) ||
6613 (ptype == SCTP_COOKIE_PRESERVE) ||
6614 (ptype == SCTP_SUPPORTED_ADDRTYPE) ||
6615 (ptype == SCTP_ADD_IP_ADDRESS) ||
6616 (ptype == SCTP_DEL_IP_ADDRESS) ||
6617 (ptype == SCTP_ERROR_CAUSE_IND) ||
6618 (ptype == SCTP_SUCCESS_REPORT)) {
6621 if ((ptype & 0x8000) == 0x0000) {
6623 * must stop processing the rest of the
6624 * param's. Any report bits were handled
6626 * sctp_arethere_unrecognized_parameters()
6627 * when the INIT or INIT-ACK was first seen.
6634 offset += SCTP_SIZE32(plen);
6635 if (offset >= limit) {
6638 phdr = sctp_get_next_param(m, offset, ¶m_buf,
6641 /* Now check to see if we need to purge any addresses */
6642 TAILQ_FOREACH_SAFE(net, &stcb->asoc.nets, sctp_next, nnet) {
6643 if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) ==
6644 SCTP_ADDR_NOT_IN_ASSOC) {
6645 /* This address has been removed from the asoc */
6646 /* remove and free it */
6647 stcb->asoc.numnets--;
6648 TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next);
6649 sctp_free_remote_addr(net);
6650 if (net == stcb->asoc.primary_destination) {
6651 stcb->asoc.primary_destination = NULL;
6652 sctp_select_primary_destination(stcb);
6656 if ((stcb->asoc.ecn_supported == 1) &&
6657 (peer_supports_ecn == 0)) {
6658 stcb->asoc.ecn_supported = 0;
6660 if ((stcb->asoc.prsctp_supported == 1) &&
6661 (peer_supports_prsctp == 0)) {
6662 stcb->asoc.prsctp_supported = 0;
6664 if ((stcb->asoc.auth_supported == 1) &&
6665 ((peer_supports_auth == 0) ||
6666 (got_random == 0) || (got_hmacs == 0))) {
6667 stcb->asoc.auth_supported = 0;
6669 if ((stcb->asoc.asconf_supported == 1) &&
6670 ((peer_supports_asconf == 0) || (peer_supports_asconf_ack == 0) ||
6671 (stcb->asoc.auth_supported == 0) ||
6672 (saw_asconf == 0) || (saw_asconf_ack == 0))) {
6673 stcb->asoc.asconf_supported = 0;
6675 if ((stcb->asoc.reconfig_supported == 1) &&
6676 (peer_supports_reconfig == 0)) {
6677 stcb->asoc.reconfig_supported = 0;
6679 if ((stcb->asoc.idata_supported == 1) &&
6680 (peer_supports_idata == 0)) {
6681 stcb->asoc.idata_supported = 0;
6683 if ((stcb->asoc.nrsack_supported == 1) &&
6684 (peer_supports_nrsack == 0)) {
6685 stcb->asoc.nrsack_supported = 0;
6687 if ((stcb->asoc.pktdrop_supported == 1) &&
6688 (peer_supports_pktdrop == 0)) {
6689 stcb->asoc.pktdrop_supported = 0;
6691 /* validate authentication required parameters */
6692 if ((peer_supports_auth == 0) && (got_chklist == 1)) {
6693 /* peer does not support auth but sent a chunks list? */
6696 if ((peer_supports_asconf == 1) && (peer_supports_auth == 0)) {
6697 /* peer supports asconf but not auth? */
6699 } else if ((peer_supports_asconf == 1) &&
6700 (peer_supports_auth == 1) &&
6701 ((saw_asconf == 0) || (saw_asconf_ack == 0))) {
6704 /* concatenate the full random key */
6705 keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len;
6706 if (chunks != NULL) {
6707 keylen += sizeof(*chunks) + num_chunks;
6709 new_key = sctp_alloc_key(keylen);
6710 if (new_key != NULL) {
6711 /* copy in the RANDOM */
6712 if (p_random != NULL) {
6713 keylen = sizeof(*p_random) + random_len;
6714 memcpy(new_key->key, p_random, keylen);
6718 /* append in the AUTH chunks */
6719 if (chunks != NULL) {
6720 memcpy(new_key->key + keylen, chunks,
6721 sizeof(*chunks) + num_chunks);
6722 keylen += sizeof(*chunks) + num_chunks;
6724 /* append in the HMACs */
6725 if (hmacs != NULL) {
6726 memcpy(new_key->key + keylen, hmacs,
6727 sizeof(*hmacs) + hmacs_len);
6730 /* failed to get memory for the key */
6733 if (stcb->asoc.authinfo.peer_random != NULL)
6734 sctp_free_key(stcb->asoc.authinfo.peer_random);
6735 stcb->asoc.authinfo.peer_random = new_key;
6736 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid);
6737 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid);
6743 sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa,
6744 struct sctp_nets *net)
6746 /* make sure the requested primary address exists in the assoc */
6747 if (net == NULL && sa)
6748 net = sctp_findnet(stcb, sa);
6751 /* didn't find the requested primary address! */
6754 /* set the primary address */
6755 if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
6756 /* Must be confirmed, so queue to set */
6757 net->dest_state |= SCTP_ADDR_REQ_PRIMARY;
6760 stcb->asoc.primary_destination = net;
6761 if (!(net->dest_state & SCTP_ADDR_PF) && (stcb->asoc.alternate)) {
6762 sctp_free_remote_addr(stcb->asoc.alternate);
6763 stcb->asoc.alternate = NULL;
6765 net = TAILQ_FIRST(&stcb->asoc.nets);
6766 if (net != stcb->asoc.primary_destination) {
6768 * first one on the list is NOT the primary
6769 * sctp_cmpaddr() is much more efficient if the
6770 * primary is the first on the list, make it so.
6772 TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6773 TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6780 sctp_is_vtag_good(uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now)
6783 * This function serves two purposes. It will see if a TAG can be
6784 * re-used and return 1 for yes it is ok and 0 for don't use that
6785 * tag. A secondary function it will do is purge out old tags that
6788 struct sctpvtaghead *chain;
6789 struct sctp_tagblock *twait_block;
6790 struct sctpasochead *head;
6791 struct sctp_tcb *stcb;
6794 SCTP_INP_INFO_RLOCK();
6795 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag,
6796 SCTP_BASE_INFO(hashasocmark))];
6797 LIST_FOREACH(stcb, head, sctp_asocs) {
6799 * We choose not to lock anything here. TCB's can't be
6800 * removed since we have the read lock, so they can't be
6801 * freed on us, same thing for the INP. I may be wrong with
6802 * this assumption, but we will go with it for now :-)
6804 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
6807 if (stcb->asoc.my_vtag == tag) {
6809 if (stcb->rport != rport) {
6812 if (stcb->sctp_ep->sctp_lport != lport) {
6815 /* Its a used tag set */
6816 SCTP_INP_INFO_RUNLOCK();
6820 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
6821 /* Now what about timed wait ? */
6822 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6824 * Block(s) are present, lets see if we have this tag in the
6827 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
6828 if (twait_block->vtag_block[i].v_tag == 0) {
6831 } else if ((long)twait_block->vtag_block[i].tv_sec_at_expire <
6833 /* Audit expires this guy */
6834 twait_block->vtag_block[i].tv_sec_at_expire = 0;
6835 twait_block->vtag_block[i].v_tag = 0;
6836 twait_block->vtag_block[i].lport = 0;
6837 twait_block->vtag_block[i].rport = 0;
6838 } else if ((twait_block->vtag_block[i].v_tag == tag) &&
6839 (twait_block->vtag_block[i].lport == lport) &&
6840 (twait_block->vtag_block[i].rport == rport)) {
6841 /* Bad tag, sorry :< */
6842 SCTP_INP_INFO_RUNLOCK();
6847 SCTP_INP_INFO_RUNLOCK();
6852 sctp_drain_mbufs(struct sctp_tcb *stcb)
6855 * We must hunt this association for MBUF's past the cumack (i.e.
6856 * out of order data that we can renege on).
6858 struct sctp_association *asoc;
6859 struct sctp_tmit_chunk *chk, *nchk;
6860 uint32_t cumulative_tsn_p1;
6861 struct sctp_queued_to_read *control, *ncontrol;
6866 /* We look for anything larger than the cum-ack + 1 */
6869 if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) {
6870 /* none we can reneg on. */
6873 SCTP_STAT_INCR(sctps_protocol_drains_done);
6874 cumulative_tsn_p1 = asoc->cumulative_tsn + 1;
6876 /* Ok that was fun, now we will drain all the inbound streams? */
6877 for (strmat = 0; strmat < asoc->streamincnt; strmat++) {
6878 TAILQ_FOREACH_SAFE(control, &asoc->strmin[strmat].inqueue, next_instrm, ncontrol) {
6880 if (control->on_strm_q != SCTP_ON_ORDERED) {
6881 panic("Huh control: %p on_q: %d -- not ordered?",
6882 control, control->on_strm_q);
6885 if (SCTP_TSN_GT(control->sinfo_tsn, cumulative_tsn_p1)) {
6886 /* Yep it is above cum-ack */
6888 SCTP_CALC_TSN_TO_GAP(gap, control->sinfo_tsn, asoc->mapping_array_base_tsn);
6889 KASSERT(control->length > 0, ("control has zero length"));
6890 if (asoc->size_on_all_streams >= control->length) {
6891 asoc->size_on_all_streams -= control->length;
6894 panic("size_on_all_streams = %u smaller than control length %u", asoc->size_on_all_streams, control->length);
6896 asoc->size_on_all_streams = 0;
6899 sctp_ucount_decr(asoc->cnt_on_all_streams);
6900 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6901 if (control->on_read_q) {
6902 TAILQ_REMOVE(&stcb->sctp_ep->read_queue, control, next);
6903 control->on_read_q = 0;
6905 TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, control, next_instrm);
6906 control->on_strm_q = 0;
6907 if (control->data) {
6908 sctp_m_freem(control->data);
6909 control->data = NULL;
6911 sctp_free_remote_addr(control->whoFrom);
6912 /* Now its reasm? */
6913 TAILQ_FOREACH_SAFE(chk, &control->reasm, sctp_next, nchk) {
6915 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.tsn, asoc->mapping_array_base_tsn);
6916 KASSERT(chk->send_size > 0, ("chunk has zero length"));
6917 if (asoc->size_on_reasm_queue >= chk->send_size) {
6918 asoc->size_on_reasm_queue -= chk->send_size;
6921 panic("size_on_reasm_queue = %u smaller than chunk length %u", asoc->size_on_reasm_queue, chk->send_size);
6923 asoc->size_on_reasm_queue = 0;
6926 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6927 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6928 TAILQ_REMOVE(&control->reasm, chk, sctp_next);
6930 sctp_m_freem(chk->data);
6933 sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
6935 sctp_free_a_readq(stcb, control);
6938 TAILQ_FOREACH_SAFE(control, &asoc->strmin[strmat].uno_inqueue, next_instrm, ncontrol) {
6940 if (control->on_strm_q != SCTP_ON_UNORDERED) {
6941 panic("Huh control: %p on_q: %d -- not unordered?",
6942 control, control->on_strm_q);
6945 if (SCTP_TSN_GT(control->sinfo_tsn, cumulative_tsn_p1)) {
6946 /* Yep it is above cum-ack */
6948 SCTP_CALC_TSN_TO_GAP(gap, control->sinfo_tsn, asoc->mapping_array_base_tsn);
6949 KASSERT(control->length > 0, ("control has zero length"));
6950 if (asoc->size_on_all_streams >= control->length) {
6951 asoc->size_on_all_streams -= control->length;
6954 panic("size_on_all_streams = %u smaller than control length %u", asoc->size_on_all_streams, control->length);
6956 asoc->size_on_all_streams = 0;
6959 sctp_ucount_decr(asoc->cnt_on_all_streams);
6960 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6961 if (control->on_read_q) {
6962 TAILQ_REMOVE(&stcb->sctp_ep->read_queue, control, next);
6963 control->on_read_q = 0;
6965 TAILQ_REMOVE(&asoc->strmin[strmat].uno_inqueue, control, next_instrm);
6966 control->on_strm_q = 0;
6967 if (control->data) {
6968 sctp_m_freem(control->data);
6969 control->data = NULL;
6971 sctp_free_remote_addr(control->whoFrom);
6972 /* Now its reasm? */
6973 TAILQ_FOREACH_SAFE(chk, &control->reasm, sctp_next, nchk) {
6975 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.tsn, asoc->mapping_array_base_tsn);
6976 KASSERT(chk->send_size > 0, ("chunk has zero length"));
6977 if (asoc->size_on_reasm_queue >= chk->send_size) {
6978 asoc->size_on_reasm_queue -= chk->send_size;
6981 panic("size_on_reasm_queue = %u smaller than chunk length %u", asoc->size_on_reasm_queue, chk->send_size);
6983 asoc->size_on_reasm_queue = 0;
6986 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6987 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6988 TAILQ_REMOVE(&control->reasm, chk, sctp_next);
6990 sctp_m_freem(chk->data);
6993 sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
6995 sctp_free_a_readq(stcb, control);
7000 /* We must back down to see what the new highest is */
7001 for (i = asoc->highest_tsn_inside_map; SCTP_TSN_GE(i, asoc->mapping_array_base_tsn); i--) {
7002 SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn);
7003 if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) {
7004 asoc->highest_tsn_inside_map = i;
7010 asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1;
7014 * Question, should we go through the delivery queue? The
7015 * only reason things are on here is the app not reading OR
7016 * a p-d-api up. An attacker COULD send enough in to
7017 * initiate the PD-API and then send a bunch of stuff to
7018 * other streams... these would wind up on the delivery
7019 * queue.. and then we would not get to them. But in order
7020 * to do this I then have to back-track and un-deliver
7021 * sequence numbers in streams.. el-yucko. I think for now
7022 * we will NOT look at the delivery queue and leave it to be
7023 * something to consider later. An alternative would be to
7024 * abort the P-D-API with a notification and then deliver
7025 * the data.... Or another method might be to keep track of
7026 * how many times the situation occurs and if we see a
7027 * possible attack underway just abort the association.
7030 SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt);
7033 * Now do we need to find a new
7034 * asoc->highest_tsn_inside_map?
7036 asoc->last_revoke_count = cnt;
7037 (void)SCTP_OS_TIMER_STOP(&stcb->asoc.dack_timer.timer);
7038 /* sa_ignore NO_NULL_CHK */
7039 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
7040 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED);
7043 * Another issue, in un-setting the TSN's in the mapping array we
7044 * DID NOT adjust the highest_tsn marker. This will cause one of
7045 * two things to occur. It may cause us to do extra work in checking
7046 * for our mapping array movement. More importantly it may cause us
7047 * to SACK every datagram. This may not be a bad thing though since
7048 * we will recover once we get our cum-ack above and all this stuff
7049 * we dumped recovered.
7057 * We must walk the PCB lists for ALL associations here. The system
7058 * is LOW on MBUF's and needs help. This is where reneging will
7059 * occur. We really hope this does NOT happen!
7061 VNET_ITERATOR_DECL(vnet_iter);
7062 VNET_LIST_RLOCK_NOSLEEP();
7063 VNET_FOREACH(vnet_iter) {
7064 CURVNET_SET(vnet_iter);
7065 struct sctp_inpcb *inp;
7066 struct sctp_tcb *stcb;
7068 SCTP_STAT_INCR(sctps_protocol_drain_calls);
7069 if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
7076 SCTP_INP_INFO_RLOCK();
7077 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
7078 /* For each endpoint */
7079 SCTP_INP_RLOCK(inp);
7080 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
7081 /* For each association */
7082 SCTP_TCB_LOCK(stcb);
7083 sctp_drain_mbufs(stcb);
7084 SCTP_TCB_UNLOCK(stcb);
7086 SCTP_INP_RUNLOCK(inp);
7088 SCTP_INP_INFO_RUNLOCK();
7091 VNET_LIST_RUNLOCK_NOSLEEP();
7095 * start a new iterator
7096 * iterates through all endpoints and associations based on the pcb_state
7097 * flags and asoc_state. "af" (mandatory) is executed for all matching
7098 * assocs and "ef" (optional) is executed when the iterator completes.
7099 * "inpf" (optional) is executed for each new endpoint as it is being
7100 * iterated through. inpe (optional) is called when the inp completes
7101 * its way through all the stcbs.
7104 sctp_initiate_iterator(inp_func inpf,
7108 uint32_t pcb_features,
7109 uint32_t asoc_state,
7113 struct sctp_inpcb *s_inp,
7114 uint8_t chunk_output_off)
7116 struct sctp_iterator *it = NULL;
7121 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
7122 SCTP_PRINTF("%s: abort on initialize being %d\n", __func__,
7123 SCTP_BASE_VAR(sctp_pcb_initialized));
7126 SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator),
7129 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
7132 memset(it, 0, sizeof(*it));
7133 it->function_assoc = af;
7134 it->function_inp = inpf;
7136 it->done_current_ep = 0;
7138 it->done_current_ep = 1;
7139 it->function_atend = ef;
7142 it->pcb_flags = pcb_state;
7143 it->pcb_features = pcb_features;
7144 it->asoc_state = asoc_state;
7145 it->function_inp_end = inpe;
7146 it->no_chunk_output = chunk_output_off;
7149 /* Assume lock is held here */
7151 SCTP_INP_INCR_REF(it->inp);
7152 it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP;
7154 SCTP_INP_INFO_RLOCK();
7155 it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead));
7157 SCTP_INP_INCR_REF(it->inp);
7159 SCTP_INP_INFO_RUNLOCK();
7160 it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP;
7163 SCTP_IPI_ITERATOR_WQ_LOCK();
7164 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
7165 SCTP_IPI_ITERATOR_WQ_UNLOCK();
7166 SCTP_PRINTF("%s: rollback on initialize being %d it=%p\n", __func__,
7167 SCTP_BASE_VAR(sctp_pcb_initialized), it);
7168 SCTP_FREE(it, SCTP_M_ITER);
7171 TAILQ_INSERT_TAIL(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
7172 if (sctp_it_ctl.iterator_running == 0) {
7173 sctp_wakeup_iterator();
7175 SCTP_IPI_ITERATOR_WQ_UNLOCK();
7176 /* sa_ignore MEMLEAK {memory is put on the tailq for the iterator} */