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 #include <netinet/sctp_dtrace_define.h>
51 #if defined(INET) || defined(INET6)
52 #include <netinet/udp.h>
55 #include <netinet6/ip6_var.h>
57 #include <sys/sched.h>
59 #include <sys/unistd.h>
62 VNET_DEFINE(struct sctp_base_info, system_base_info);
64 /* FIX: we don't handle multiple link local scopes */
65 /* "scopeless" replacement IN6_ARE_ADDR_EQUAL */
68 SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b)
70 struct sockaddr_in6 tmp_a, tmp_b;
72 memcpy(&tmp_a, a, sizeof(struct sockaddr_in6));
73 if (sa6_embedscope(&tmp_a, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
76 memcpy(&tmp_b, b, sizeof(struct sockaddr_in6));
77 if (sa6_embedscope(&tmp_b, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
80 return (IN6_ARE_ADDR_EQUAL(&tmp_a.sin6_addr, &tmp_b.sin6_addr));
85 sctp_fill_pcbinfo(struct sctp_pcbinfo *spcb)
88 * We really don't need to lock this, but I will just because it
91 SCTP_INP_INFO_RLOCK();
92 spcb->ep_count = SCTP_BASE_INFO(ipi_count_ep);
93 spcb->asoc_count = SCTP_BASE_INFO(ipi_count_asoc);
94 spcb->laddr_count = SCTP_BASE_INFO(ipi_count_laddr);
95 spcb->raddr_count = SCTP_BASE_INFO(ipi_count_raddr);
96 spcb->chk_count = SCTP_BASE_INFO(ipi_count_chunk);
97 spcb->readq_count = SCTP_BASE_INFO(ipi_count_readq);
98 spcb->stream_oque = SCTP_BASE_INFO(ipi_count_strmoq);
99 spcb->free_chunks = SCTP_BASE_INFO(ipi_free_chunks);
100 SCTP_INP_INFO_RUNLOCK();
104 * Addresses are added to VRF's (Virtual Router's). For BSD we
105 * have only the default VRF 0. We maintain a hash list of
106 * VRF's. Each VRF has its own list of sctp_ifn's. Each of
107 * these has a list of addresses. When we add a new address
108 * to a VRF we lookup the ifn/ifn_index, if the ifn does
109 * not exist we create it and add it to the list of IFN's
110 * within the VRF. Once we have the sctp_ifn, we add the
111 * address to the list. So we look something like:
114 * vrf-> ifn-> ifn -> ifn
116 * ... +--ifa-> ifa -> ifa
119 * We keep these separate lists since the SCTP subsystem will
120 * point to these from its source address selection nets structure.
121 * When an address is deleted it does not happen right away on
122 * the SCTP side, it gets scheduled. What we do when a
123 * delete happens is immediately remove the address from
124 * the master list and decrement the refcount. As our
125 * addip iterator works through and frees the src address
126 * selection pointing to the sctp_ifa, eventually the refcount
127 * will reach 0 and we will delete it. Note that it is assumed
128 * that any locking on system level ifn/ifa is done at the
129 * caller of these functions and these routines will only
130 * lock the SCTP structures as they add or delete things.
132 * Other notes on VRF concepts.
133 * - An endpoint can be in multiple VRF's
134 * - An association lives within a VRF and only one VRF.
135 * - Any incoming packet we can deduce the VRF for by
136 * looking at the mbuf/pak inbound (for BSD its VRF=0 :D)
137 * - Any downward send call or connect call must supply the
138 * VRF via ancillary data or via some sort of set default
139 * VRF socket option call (again for BSD no brainer since
140 * the VRF is always 0).
141 * - An endpoint may add multiple VRF's to it.
142 * - Listening sockets can accept associations in any
143 * of the VRF's they are in but the assoc will end up
144 * in only one VRF (gotten from the packet or connect/send).
149 sctp_allocate_vrf(int vrf_id)
151 struct sctp_vrf *vrf = NULL;
152 struct sctp_vrflist *bucket;
154 /* First allocate the VRF structure */
155 vrf = sctp_find_vrf(vrf_id);
157 /* Already allocated */
160 SCTP_MALLOC(vrf, struct sctp_vrf *, sizeof(struct sctp_vrf),
165 panic("No memory for VRF:%d", vrf_id);
170 memset(vrf, 0, sizeof(struct sctp_vrf));
171 vrf->vrf_id = vrf_id;
172 LIST_INIT(&vrf->ifnlist);
173 vrf->total_ifa_count = 0;
175 /* now also setup table ids */
176 SCTP_INIT_VRF_TABLEID(vrf);
177 /* Init the HASH of addresses */
178 vrf->vrf_addr_hash = SCTP_HASH_INIT(SCTP_VRF_ADDR_HASH_SIZE,
179 &vrf->vrf_addr_hashmark);
180 if (vrf->vrf_addr_hash == NULL) {
183 panic("No memory for VRF:%d", vrf_id);
185 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);
740 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: deleting address:", vrf_id);
741 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
743 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
745 /* Validate the delete */
746 if (sctp_ifap->ifn_p) {
750 * The name has priority over the ifn_index
751 * if its given. We do this especially for
752 * panda who might recycle indexes fast.
755 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) == 0) {
756 /* They match its a correct delete */
761 /* last ditch check ifn_index */
762 if (ifn_index == sctp_ifap->ifn_p->ifn_index) {
767 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s does not match addresses\n",
768 ifn_index, ((if_name == NULL) ? "NULL" : if_name));
769 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s - ignoring delete\n",
770 sctp_ifap->ifn_p->ifn_index, sctp_ifap->ifn_p->ifn_name);
771 SCTP_IPI_ADDR_WUNLOCK();
775 SCTPDBG(SCTP_DEBUG_PCB4, "Deleting ifa %p\n", (void *)sctp_ifap);
776 sctp_ifap->localifa_flags &= SCTP_ADDR_VALID;
778 * We don't set the flag. This means that the structure will
779 * hang around in EP's that have bound specific to it until
780 * they close. This gives us TCP like behavior if someone
781 * removes an address (or for that matter adds it right
784 /* sctp_ifap->localifa_flags |= SCTP_BEING_DELETED; */
785 vrf->total_ifa_count--;
786 LIST_REMOVE(sctp_ifap, next_bucket);
787 sctp_remove_ifa_from_ifn(sctp_ifap);
791 SCTPDBG(SCTP_DEBUG_PCB4, "Del Addr-ifn:%d Could not find address:",
793 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
798 SCTP_IPI_ADDR_WUNLOCK();
800 struct sctp_laddr *wi;
802 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
805 * Gak, what can we do? We have lost an address
806 * change can you say HOSED?
808 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
810 /* Oops, must decrement the count */
811 sctp_free_ifa(sctp_ifap);
814 SCTP_INCR_LADDR_COUNT();
815 memset(wi, 0, sizeof(*wi));
816 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
818 wi->action = SCTP_DEL_IP_ADDRESS;
821 * Should this really be a tailq? As it is we will process
822 * the newest first :-0
824 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
825 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
826 (struct sctp_inpcb *)NULL,
827 (struct sctp_tcb *)NULL,
828 (struct sctp_nets *)NULL);
829 SCTP_WQ_ADDR_UNLOCK();
836 sctp_does_stcb_own_this_addr(struct sctp_tcb *stcb, struct sockaddr *to)
840 int ipv4_local_scope, ipv4_addr_legal;
843 int local_scope, site_scope, ipv6_addr_legal;
845 struct sctp_vrf *vrf;
846 struct sctp_ifn *sctp_ifn;
847 struct sctp_ifa *sctp_ifa;
849 loopback_scope = stcb->asoc.scope.loopback_scope;
851 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
852 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
855 local_scope = stcb->asoc.scope.local_scope;
856 site_scope = stcb->asoc.scope.site_scope;
857 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
860 SCTP_IPI_ADDR_RLOCK();
861 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
863 /* no vrf, no addresses */
864 SCTP_IPI_ADDR_RUNLOCK();
867 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
868 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
869 if ((loopback_scope == 0) &&
870 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
873 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
874 if (sctp_is_addr_restricted(stcb, sctp_ifa) &&
875 (!sctp_is_addr_pending(stcb, sctp_ifa))) {
877 * We allow pending addresses, where
878 * we have sent an asconf-add to be
883 if (sctp_ifa->address.sa.sa_family != to->sa_family) {
886 switch (sctp_ifa->address.sa.sa_family) {
889 if (ipv4_addr_legal) {
890 struct sockaddr_in *sin,
893 sin = &sctp_ifa->address.sin;
894 rsin = (struct sockaddr_in *)to;
895 if ((ipv4_local_scope == 0) &&
896 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
899 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
900 &sin->sin_addr) != 0) {
903 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
904 SCTP_IPI_ADDR_RUNLOCK();
912 if (ipv6_addr_legal) {
913 struct sockaddr_in6 *sin6,
916 sin6 = &sctp_ifa->address.sin6;
917 rsin6 = (struct sockaddr_in6 *)to;
918 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
919 &sin6->sin6_addr) != 0) {
922 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
923 if (local_scope == 0)
925 if (sin6->sin6_scope_id == 0) {
926 if (sa6_recoverscope(sin6) != 0)
930 if ((site_scope == 0) &&
931 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
934 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
935 SCTP_IPI_ADDR_RUNLOCK();
948 struct sctp_laddr *laddr;
950 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
951 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
952 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
955 if (sctp_is_addr_restricted(stcb, laddr->ifa) &&
956 (!sctp_is_addr_pending(stcb, laddr->ifa))) {
958 * We allow pending addresses, where we have
959 * sent an asconf-add to be considered
964 if (laddr->ifa->address.sa.sa_family != to->sa_family) {
967 switch (to->sa_family) {
971 struct sockaddr_in *sin, *rsin;
973 sin = &laddr->ifa->address.sin;
974 rsin = (struct sockaddr_in *)to;
975 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
976 SCTP_IPI_ADDR_RUNLOCK();
985 struct sockaddr_in6 *sin6, *rsin6;
987 sin6 = &laddr->ifa->address.sin6;
988 rsin6 = (struct sockaddr_in6 *)to;
989 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
990 SCTP_IPI_ADDR_RUNLOCK();
1004 SCTP_IPI_ADDR_RUNLOCK();
1009 static struct sctp_tcb *
1010 sctp_tcb_special_locate(struct sctp_inpcb **inp_p, struct sockaddr *from,
1011 struct sockaddr *to, struct sctp_nets **netp, uint32_t vrf_id)
1013 /**** ASSUMES THE CALLER holds the INP_INFO_RLOCK */
1015 * If we support the TCP model, then we must now dig through to see
1016 * if we can find our endpoint in the list of tcp ep's.
1018 uint16_t lport, rport;
1019 struct sctppcbhead *ephead;
1020 struct sctp_inpcb *inp;
1021 struct sctp_laddr *laddr;
1022 struct sctp_tcb *stcb;
1023 struct sctp_nets *net;
1025 if ((to == NULL) || (from == NULL)) {
1028 switch (to->sa_family) {
1031 if (from->sa_family == AF_INET) {
1032 lport = ((struct sockaddr_in *)to)->sin_port;
1033 rport = ((struct sockaddr_in *)from)->sin_port;
1041 if (from->sa_family == AF_INET6) {
1042 lport = ((struct sockaddr_in6 *)to)->sin6_port;
1043 rport = ((struct sockaddr_in6 *)from)->sin6_port;
1052 ephead = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
1054 * Ok now for each of the guys in this bucket we must look and see:
1055 * - Does the remote port match. - Does there single association's
1056 * addresses match this address (to). If so we update p_ep to point
1057 * to this ep and return the tcb from it.
1059 LIST_FOREACH(inp, ephead, sctp_hash) {
1060 SCTP_INP_RLOCK(inp);
1061 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1062 SCTP_INP_RUNLOCK(inp);
1065 if (lport != inp->sctp_lport) {
1066 SCTP_INP_RUNLOCK(inp);
1069 switch (to->sa_family) {
1073 struct sockaddr_in *sin;
1075 sin = (struct sockaddr_in *)to;
1076 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
1077 &sin->sin_addr) != 0) {
1078 SCTP_INP_RUNLOCK(inp);
1087 struct sockaddr_in6 *sin6;
1089 sin6 = (struct sockaddr_in6 *)to;
1090 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
1091 &sin6->sin6_addr) != 0) {
1092 SCTP_INP_RUNLOCK(inp);
1099 SCTP_INP_RUNLOCK(inp);
1102 if (inp->def_vrf_id != vrf_id) {
1103 SCTP_INP_RUNLOCK(inp);
1106 /* check to see if the ep has one of the addresses */
1107 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
1108 /* We are NOT bound all, so look further */
1111 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1113 if (laddr->ifa == NULL) {
1114 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n", __func__);
1117 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1118 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
1121 if (laddr->ifa->address.sa.sa_family ==
1123 /* see if it matches */
1125 if (from->sa_family == AF_INET) {
1126 struct sockaddr_in *intf_addr,
1129 intf_addr = &laddr->ifa->address.sin;
1130 sin = (struct sockaddr_in *)to;
1131 if (sin->sin_addr.s_addr ==
1132 intf_addr->sin_addr.s_addr) {
1139 if (from->sa_family == AF_INET6) {
1140 struct sockaddr_in6 *intf_addr6;
1141 struct sockaddr_in6 *sin6;
1143 sin6 = (struct sockaddr_in6 *)
1145 intf_addr6 = &laddr->ifa->address.sin6;
1147 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1157 /* This endpoint does not have this address */
1158 SCTP_INP_RUNLOCK(inp);
1163 * Ok if we hit here the ep has the address, does it hold
1166 /* XXX: Why don't we TAILQ_FOREACH through sctp_asoc_list? */
1167 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1169 SCTP_INP_RUNLOCK(inp);
1172 SCTP_TCB_LOCK(stcb);
1173 if (!sctp_does_stcb_own_this_addr(stcb, to)) {
1174 SCTP_TCB_UNLOCK(stcb);
1175 SCTP_INP_RUNLOCK(inp);
1178 if (stcb->rport != rport) {
1179 /* remote port does not match. */
1180 SCTP_TCB_UNLOCK(stcb);
1181 SCTP_INP_RUNLOCK(inp);
1184 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1185 SCTP_TCB_UNLOCK(stcb);
1186 SCTP_INP_RUNLOCK(inp);
1189 if (!sctp_does_stcb_own_this_addr(stcb, to)) {
1190 SCTP_TCB_UNLOCK(stcb);
1191 SCTP_INP_RUNLOCK(inp);
1194 /* Does this TCB have a matching address? */
1195 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1197 if (net->ro._l_addr.sa.sa_family != from->sa_family) {
1198 /* not the same family, can't be a match */
1201 switch (from->sa_family) {
1205 struct sockaddr_in *sin, *rsin;
1207 sin = (struct sockaddr_in *)&net->ro._l_addr;
1208 rsin = (struct sockaddr_in *)from;
1209 if (sin->sin_addr.s_addr ==
1210 rsin->sin_addr.s_addr) {
1216 * Update the endpoint
1220 SCTP_INP_RUNLOCK(inp);
1229 struct sockaddr_in6 *sin6, *rsin6;
1231 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1232 rsin6 = (struct sockaddr_in6 *)from;
1233 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1240 * Update the endpoint
1244 SCTP_INP_RUNLOCK(inp);
1255 SCTP_TCB_UNLOCK(stcb);
1256 SCTP_INP_RUNLOCK(inp);
1265 * 1) If I return a NULL you must decrement any INP ref cnt. 2) If I find an
1266 * stcb, both will be locked (locked_tcb and stcb) but decrement will be done
1267 * (if locked == NULL). 3) Decrement happens on return ONLY if locked ==
1272 sctp_findassociation_ep_addr(struct sctp_inpcb **inp_p, struct sockaddr *remote,
1273 struct sctp_nets **netp, struct sockaddr *local, struct sctp_tcb *locked_tcb)
1275 struct sctpasochead *head;
1276 struct sctp_inpcb *inp;
1277 struct sctp_tcb *stcb = NULL;
1278 struct sctp_nets *net;
1282 switch (remote->sa_family) {
1285 rport = (((struct sockaddr_in *)remote)->sin_port);
1290 rport = (((struct sockaddr_in6 *)remote)->sin6_port);
1298 * UN-lock so we can do proper locking here this occurs when
1299 * called from load_addresses_from_init.
1301 atomic_add_int(&locked_tcb->asoc.refcnt, 1);
1302 SCTP_TCB_UNLOCK(locked_tcb);
1304 SCTP_INP_INFO_RLOCK();
1305 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
1306 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
1308 * Now either this guy is our listener or it's the
1309 * connector. If it is the one that issued the connect, then
1310 * it's only chance is to be the first TCB in the list. If
1311 * it is the acceptor, then do the special_lookup to hash
1312 * and find the real inp.
1314 if ((inp->sctp_socket) && SCTP_IS_LISTENING(inp)) {
1315 /* to is peer addr, from is my addr */
1316 stcb = sctp_tcb_special_locate(inp_p, remote, local,
1317 netp, inp->def_vrf_id);
1318 if ((stcb != NULL) && (locked_tcb == NULL)) {
1319 /* we have a locked tcb, lower refcount */
1320 SCTP_INP_DECR_REF(inp);
1322 if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
1323 SCTP_INP_RLOCK(locked_tcb->sctp_ep);
1324 SCTP_TCB_LOCK(locked_tcb);
1325 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1326 SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
1328 SCTP_INP_INFO_RUNLOCK();
1331 SCTP_INP_WLOCK(inp);
1332 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1335 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1339 SCTP_TCB_LOCK(stcb);
1341 if (stcb->rport != rport) {
1342 /* remote port does not match. */
1343 SCTP_TCB_UNLOCK(stcb);
1346 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1347 SCTP_TCB_UNLOCK(stcb);
1350 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1351 SCTP_TCB_UNLOCK(stcb);
1354 /* now look at the list of remote addresses */
1355 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1357 if (net == (TAILQ_NEXT(net, sctp_next))) {
1358 panic("Corrupt net list");
1361 if (net->ro._l_addr.sa.sa_family !=
1362 remote->sa_family) {
1363 /* not the same family */
1366 switch (remote->sa_family) {
1370 struct sockaddr_in *sin,
1373 sin = (struct sockaddr_in *)
1375 rsin = (struct sockaddr_in *)remote;
1376 if (sin->sin_addr.s_addr ==
1377 rsin->sin_addr.s_addr) {
1382 if (locked_tcb == NULL) {
1383 SCTP_INP_DECR_REF(inp);
1384 } else if (locked_tcb != stcb) {
1385 SCTP_TCB_LOCK(locked_tcb);
1388 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1390 SCTP_INP_WUNLOCK(inp);
1391 SCTP_INP_INFO_RUNLOCK();
1400 struct sockaddr_in6 *sin6,
1403 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1404 rsin6 = (struct sockaddr_in6 *)remote;
1405 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1411 if (locked_tcb == NULL) {
1412 SCTP_INP_DECR_REF(inp);
1413 } else if (locked_tcb != stcb) {
1414 SCTP_TCB_LOCK(locked_tcb);
1417 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1419 SCTP_INP_WUNLOCK(inp);
1420 SCTP_INP_INFO_RUNLOCK();
1431 SCTP_TCB_UNLOCK(stcb);
1434 SCTP_INP_WLOCK(inp);
1435 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1438 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport,
1439 inp->sctp_hashmark)];
1440 LIST_FOREACH(stcb, head, sctp_tcbhash) {
1441 if (stcb->rport != rport) {
1442 /* remote port does not match */
1445 SCTP_TCB_LOCK(stcb);
1446 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1447 SCTP_TCB_UNLOCK(stcb);
1450 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1451 SCTP_TCB_UNLOCK(stcb);
1454 /* now look at the list of remote addresses */
1455 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1457 if (net == (TAILQ_NEXT(net, sctp_next))) {
1458 panic("Corrupt net list");
1461 if (net->ro._l_addr.sa.sa_family !=
1462 remote->sa_family) {
1463 /* not the same family */
1466 switch (remote->sa_family) {
1470 struct sockaddr_in *sin,
1473 sin = (struct sockaddr_in *)
1475 rsin = (struct sockaddr_in *)remote;
1476 if (sin->sin_addr.s_addr ==
1477 rsin->sin_addr.s_addr) {
1482 if (locked_tcb == NULL) {
1483 SCTP_INP_DECR_REF(inp);
1484 } else if (locked_tcb != stcb) {
1485 SCTP_TCB_LOCK(locked_tcb);
1488 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1490 SCTP_INP_WUNLOCK(inp);
1491 SCTP_INP_INFO_RUNLOCK();
1500 struct sockaddr_in6 *sin6,
1503 sin6 = (struct sockaddr_in6 *)
1505 rsin6 = (struct sockaddr_in6 *)remote;
1506 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1512 if (locked_tcb == NULL) {
1513 SCTP_INP_DECR_REF(inp);
1514 } else if (locked_tcb != stcb) {
1515 SCTP_TCB_LOCK(locked_tcb);
1518 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1520 SCTP_INP_WUNLOCK(inp);
1521 SCTP_INP_INFO_RUNLOCK();
1532 SCTP_TCB_UNLOCK(stcb);
1536 /* clean up for returning null */
1538 SCTP_TCB_LOCK(locked_tcb);
1539 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1541 SCTP_INP_WUNLOCK(inp);
1542 SCTP_INP_INFO_RUNLOCK();
1549 * Find an association for a specific endpoint using the association id given
1550 * out in the COMM_UP notification
1553 sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1556 * Use my the assoc_id to find a endpoint
1558 struct sctpasochead *head;
1559 struct sctp_tcb *stcb;
1563 SCTP_PRINTF("TSNH ep_associd\n");
1566 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1567 SCTP_PRINTF("TSNH ep_associd0\n");
1570 id = (uint32_t)asoc_id;
1571 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
1573 /* invalid id TSNH */
1574 SCTP_PRINTF("TSNH ep_associd1\n");
1577 LIST_FOREACH(stcb, head, sctp_tcbasocidhash) {
1578 if (stcb->asoc.assoc_id == id) {
1579 if (inp != stcb->sctp_ep) {
1581 * some other guy has the same id active (id
1584 SCTP_PRINTF("TSNH ep_associd2\n");
1587 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1591 SCTP_TCB_LOCK(stcb);
1601 sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1603 struct sctp_tcb *stcb;
1605 SCTP_INP_RLOCK(inp);
1606 stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
1607 SCTP_INP_RUNLOCK(inp);
1613 * Endpoint probe expects that the INP_INFO is locked.
1615 static struct sctp_inpcb *
1616 sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head,
1617 uint16_t lport, uint32_t vrf_id)
1619 struct sctp_inpcb *inp;
1620 struct sctp_laddr *laddr;
1622 struct sockaddr_in *sin;
1625 struct sockaddr_in6 *sin6;
1626 struct sockaddr_in6 *intf_addr6;
1636 switch (nam->sa_family) {
1639 sin = (struct sockaddr_in *)nam;
1644 sin6 = (struct sockaddr_in6 *)nam;
1648 /* unsupported family */
1655 LIST_FOREACH(inp, head, sctp_hash) {
1656 SCTP_INP_RLOCK(inp);
1657 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1658 SCTP_INP_RUNLOCK(inp);
1661 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) &&
1662 (inp->sctp_lport == lport)) {
1664 switch (nam->sa_family) {
1667 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1668 SCTP_IPV6_V6ONLY(inp)) {
1670 * IPv4 on a IPv6 socket with ONLY
1673 SCTP_INP_RUNLOCK(inp);
1676 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
1677 &sin->sin_addr) != 0) {
1678 SCTP_INP_RUNLOCK(inp);
1686 * A V6 address and the endpoint is NOT
1689 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
1690 SCTP_INP_RUNLOCK(inp);
1693 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
1694 &sin6->sin6_addr) != 0) {
1695 SCTP_INP_RUNLOCK(inp);
1703 /* does a VRF id match? */
1705 if (inp->def_vrf_id == vrf_id)
1708 SCTP_INP_RUNLOCK(inp);
1713 SCTP_INP_RUNLOCK(inp);
1715 switch (nam->sa_family) {
1718 if (sin->sin_addr.s_addr == INADDR_ANY) {
1719 /* Can't hunt for one that has no address specified */
1726 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1727 /* Can't hunt for one that has no address specified */
1736 * ok, not bound to all so see if we can find a EP bound to this
1739 LIST_FOREACH(inp, head, sctp_hash) {
1740 SCTP_INP_RLOCK(inp);
1741 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1742 SCTP_INP_RUNLOCK(inp);
1745 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
1746 SCTP_INP_RUNLOCK(inp);
1750 * Ok this could be a likely candidate, look at all of its
1753 if (inp->sctp_lport != lport) {
1754 SCTP_INP_RUNLOCK(inp);
1757 /* does a VRF id match? */
1759 if (inp->def_vrf_id == vrf_id)
1763 SCTP_INP_RUNLOCK(inp);
1766 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1767 if (laddr->ifa == NULL) {
1768 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
1772 SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ",
1773 (void *)laddr->ifa);
1774 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1775 SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n");
1778 if (laddr->ifa->address.sa.sa_family == nam->sa_family) {
1779 /* possible, see if it matches */
1780 switch (nam->sa_family) {
1783 if (sin->sin_addr.s_addr ==
1784 laddr->ifa->address.sin.sin_addr.s_addr) {
1785 SCTP_INP_RUNLOCK(inp);
1792 intf_addr6 = &laddr->ifa->address.sin6;
1793 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1795 SCTP_INP_RUNLOCK(inp);
1803 SCTP_INP_RUNLOCK(inp);
1809 static struct sctp_inpcb *
1810 sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
1812 struct sctppcbhead *head;
1813 struct sctp_inpcb *t_inp;
1816 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1817 SCTP_BASE_INFO(hashmark))];
1818 LIST_FOREACH(t_inp, head, sctp_hash) {
1819 if (t_inp->sctp_lport != lport) {
1822 /* is it in the VRF in question */
1824 if (t_inp->def_vrf_id == vrf_id)
1829 /* This one is in use. */
1830 /* check the v6/v4 binding issue */
1831 if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1832 SCTP_IPV6_V6ONLY(t_inp)) {
1833 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1834 /* collision in V6 space */
1837 /* inp is BOUND_V4 no conflict */
1840 } else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1841 /* t_inp is bound v4 and v6, conflict always */
1844 /* t_inp is bound only V4 */
1845 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1846 SCTP_IPV6_V6ONLY(inp)) {
1850 /* else fall through to conflict */
1859 sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
1861 /* For 1-2-1 with port reuse */
1862 struct sctppcbhead *head;
1863 struct sctp_inpcb *tinp, *ninp;
1865 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
1866 /* only works with port reuse on */
1869 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) {
1872 SCTP_INP_RUNLOCK(inp);
1873 SCTP_INP_INFO_WLOCK();
1874 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport,
1875 SCTP_BASE_INFO(hashmark))];
1876 /* Kick out all non-listeners to the TCP hash */
1877 LIST_FOREACH_SAFE(tinp, head, sctp_hash, ninp) {
1878 if (tinp->sctp_lport != inp->sctp_lport) {
1881 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1884 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
1887 if (SCTP_IS_LISTENING(tinp)) {
1890 SCTP_INP_WLOCK(tinp);
1891 LIST_REMOVE(tinp, sctp_hash);
1892 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))];
1893 tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
1894 LIST_INSERT_HEAD(head, tinp, sctp_hash);
1895 SCTP_INP_WUNLOCK(tinp);
1897 SCTP_INP_WLOCK(inp);
1898 /* Pull from where he was */
1899 LIST_REMOVE(inp, sctp_hash);
1900 inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL;
1901 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))];
1902 LIST_INSERT_HEAD(head, inp, sctp_hash);
1903 SCTP_INP_WUNLOCK(inp);
1904 SCTP_INP_RLOCK(inp);
1905 SCTP_INP_INFO_WUNLOCK();
1911 sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock,
1915 * First we check the hash table to see if someone has this port
1916 * bound with just the port.
1918 struct sctp_inpcb *inp;
1919 struct sctppcbhead *head;
1923 struct sockaddr_in *sin;
1926 struct sockaddr_in6 *sin6;
1929 switch (nam->sa_family) {
1932 sin = (struct sockaddr_in *)nam;
1933 lport = sin->sin_port;
1938 sin6 = (struct sockaddr_in6 *)nam;
1939 lport = sin6->sin6_port;
1946 * I could cheat here and just cast to one of the types but we will
1947 * do it right. It also provides the check against an Unsupported
1950 /* Find the head of the ALLADDR chain */
1951 if (have_lock == 0) {
1952 SCTP_INP_INFO_RLOCK();
1954 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1955 SCTP_BASE_INFO(hashmark))];
1956 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1959 * If the TCP model exists it could be that the main listening
1960 * endpoint is gone but there still exists a connected socket for
1961 * this guy. If so we can return the first one that we find. This
1962 * may NOT be the correct one so the caller should be wary on the
1963 * returned INP. Currently the only caller that sets find_tcp_pool
1964 * is in bindx where we are verifying that a user CAN bind the
1965 * address. He either has bound it already, or someone else has, or
1966 * its open to bind, so this is good enough.
1968 if (inp == NULL && find_tcp_pool) {
1969 for (i = 0; i < SCTP_BASE_INFO(hashtcpmark) + 1; i++) {
1970 head = &SCTP_BASE_INFO(sctp_tcpephash)[i];
1971 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1978 SCTP_INP_INCR_REF(inp);
1980 if (have_lock == 0) {
1981 SCTP_INP_INFO_RUNLOCK();
1988 * Find an association for an endpoint with the pointer to whom you want to
1989 * send to and the endpoint pointer. The address can be IPv4 or IPv6. We may
1990 * need to change the *to to some other struct like a mbuf...
1993 sctp_findassociation_addr_sa(struct sockaddr *from, struct sockaddr *to,
1994 struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool,
1997 struct sctp_inpcb *inp = NULL;
1998 struct sctp_tcb *stcb;
2000 SCTP_INP_INFO_RLOCK();
2001 if (find_tcp_pool) {
2002 if (inp_p != NULL) {
2003 stcb = sctp_tcb_special_locate(inp_p, from, to, netp,
2006 stcb = sctp_tcb_special_locate(&inp, from, to, netp,
2010 SCTP_INP_INFO_RUNLOCK();
2014 inp = sctp_pcb_findep(to, 0, 1, vrf_id);
2015 if (inp_p != NULL) {
2018 SCTP_INP_INFO_RUNLOCK();
2023 * ok, we have an endpoint, now lets find the assoc for it (if any)
2024 * we now place the source address or from in the to of the find
2025 * endpoint call. Since in reality this chain is used from the
2026 * inbound packet side.
2028 if (inp_p != NULL) {
2029 stcb = sctp_findassociation_ep_addr(inp_p, from, netp, to,
2032 stcb = sctp_findassociation_ep_addr(&inp, from, netp, to,
2040 * This routine will grub through the mbuf that is a INIT or INIT-ACK and
2041 * find all addresses that the sender has specified in any address list. Each
2042 * address will be used to lookup the TCB and see if one exits.
2044 static struct sctp_tcb *
2045 sctp_findassociation_special_addr(struct mbuf *m, int offset,
2046 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp,
2047 struct sockaddr *dst)
2049 struct sctp_paramhdr *phdr, param_buf;
2050 #if defined(INET) || defined(INET6)
2051 struct sctp_tcb *stcb;
2056 struct sockaddr_in sin4;
2059 struct sockaddr_in6 sin6;
2063 memset(&sin4, 0, sizeof(sin4));
2064 sin4.sin_len = sizeof(sin4);
2065 sin4.sin_family = AF_INET;
2066 sin4.sin_port = sh->src_port;
2069 memset(&sin6, 0, sizeof(sin6));
2070 sin6.sin6_len = sizeof(sin6);
2071 sin6.sin6_family = AF_INET6;
2072 sin6.sin6_port = sh->src_port;
2075 offset += sizeof(struct sctp_init_chunk);
2077 phdr = sctp_get_next_param(m, offset, ¶m_buf, sizeof(param_buf));
2078 while (phdr != NULL) {
2079 /* now we must see if we want the parameter */
2080 #if defined(INET) || defined(INET6)
2081 ptype = ntohs(phdr->param_type);
2083 plen = ntohs(phdr->param_length);
2088 if (ptype == SCTP_IPV4_ADDRESS &&
2089 plen == sizeof(struct sctp_ipv4addr_param)) {
2090 /* Get the rest of the address */
2091 struct sctp_ipv4addr_param ip4_param, *p4;
2093 phdr = sctp_get_next_param(m, offset,
2094 (struct sctp_paramhdr *)&ip4_param, sizeof(ip4_param));
2098 p4 = (struct sctp_ipv4addr_param *)phdr;
2099 memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr));
2101 stcb = sctp_findassociation_ep_addr(inp_p,
2102 (struct sockaddr *)&sin4, netp, dst, NULL);
2109 if (ptype == SCTP_IPV6_ADDRESS &&
2110 plen == sizeof(struct sctp_ipv6addr_param)) {
2111 /* Get the rest of the address */
2112 struct sctp_ipv6addr_param ip6_param, *p6;
2114 phdr = sctp_get_next_param(m, offset,
2115 (struct sctp_paramhdr *)&ip6_param, sizeof(ip6_param));
2119 p6 = (struct sctp_ipv6addr_param *)phdr;
2120 memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr));
2122 stcb = sctp_findassociation_ep_addr(inp_p,
2123 (struct sockaddr *)&sin6, netp, dst, NULL);
2129 offset += SCTP_SIZE32(plen);
2130 phdr = sctp_get_next_param(m, offset, ¶m_buf,
2136 static struct sctp_tcb *
2137 sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag,
2138 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport,
2139 uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
2142 * Use my vtag to hash. If we find it we then verify the source addr
2143 * is in the assoc. If all goes well we save a bit on rec of a
2146 struct sctpasochead *head;
2147 struct sctp_nets *net;
2148 struct sctp_tcb *stcb;
2150 SCTP_INP_INFO_RLOCK();
2151 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag,
2152 SCTP_BASE_INFO(hashasocmark))];
2153 LIST_FOREACH(stcb, head, sctp_asocs) {
2154 SCTP_INP_RLOCK(stcb->sctp_ep);
2155 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
2156 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2159 if (stcb->sctp_ep->def_vrf_id != vrf_id) {
2160 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2163 SCTP_TCB_LOCK(stcb);
2164 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2165 if (stcb->asoc.my_vtag == vtag) {
2167 if (stcb->rport != rport) {
2168 SCTP_TCB_UNLOCK(stcb);
2171 if (stcb->sctp_ep->sctp_lport != lport) {
2172 SCTP_TCB_UNLOCK(stcb);
2175 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
2176 SCTP_TCB_UNLOCK(stcb);
2179 /* RRS:Need toaddr check here */
2180 if (sctp_does_stcb_own_this_addr(stcb, to) == 0) {
2181 /* Endpoint does not own this address */
2182 SCTP_TCB_UNLOCK(stcb);
2187 * If we have both vtags that's all we match
2190 if (stcb->asoc.peer_vtag == remote_tag) {
2192 * If both tags match we consider it
2193 * conclusive and check NO
2194 * source/destination addresses
2199 if (skip_src_check) {
2202 *netp = sctp_findnet(stcb, from);
2204 *netp = NULL; /* unknown */
2207 *inp_p = stcb->sctp_ep;
2208 SCTP_INP_INFO_RUNLOCK();
2211 net = sctp_findnet(stcb, from);
2215 SCTP_STAT_INCR(sctps_vtagexpress);
2216 *inp_p = stcb->sctp_ep;
2217 SCTP_INP_INFO_RUNLOCK();
2221 * not him, this should only happen in rare
2222 * cases so I peg it.
2224 SCTP_STAT_INCR(sctps_vtagbogus);
2227 SCTP_TCB_UNLOCK(stcb);
2229 SCTP_INP_INFO_RUNLOCK();
2235 * Find an association with the pointer to the inbound IP packet. This can be
2236 * a IPv4 or IPv6 packet.
2239 sctp_findassociation_addr(struct mbuf *m, int offset,
2240 struct sockaddr *src, struct sockaddr *dst,
2241 struct sctphdr *sh, struct sctp_chunkhdr *ch,
2242 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2244 struct sctp_tcb *stcb;
2245 struct sctp_inpcb *inp;
2248 /* we only go down this path if vtag is non-zero */
2249 stcb = sctp_findassoc_by_vtag(src, dst, ntohl(sh->v_tag),
2250 inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0);
2256 stcb = sctp_findassociation_addr_sa(src, dst, inp_p, netp,
2260 stcb = sctp_findassociation_addr_sa(src, dst, &inp, netp,
2263 SCTPDBG(SCTP_DEBUG_PCB1, "stcb:%p inp:%p\n", (void *)stcb, (void *)inp);
2264 if (stcb == NULL && inp) {
2265 /* Found a EP but not this address */
2266 if ((ch->chunk_type == SCTP_INITIATION) ||
2267 (ch->chunk_type == SCTP_INITIATION_ACK)) {
2269 * special hook, we do NOT return linp or an
2270 * association that is linked to an existing
2271 * association that is under the TCP pool (i.e. no
2272 * listener exists). The endpoint finding routine
2273 * will always find a listener before examining the
2276 if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
2282 stcb = sctp_findassociation_special_addr(m,
2283 offset, sh, &inp, netp, dst);
2284 if (inp_p != NULL) {
2289 SCTPDBG(SCTP_DEBUG_PCB1, "stcb is %p\n", (void *)stcb);
2294 * lookup an association by an ASCONF lookup address.
2295 * if the lookup address is 0.0.0.0 or ::0, use the vtag to do the lookup
2298 sctp_findassociation_ep_asconf(struct mbuf *m, int offset,
2299 struct sockaddr *dst, struct sctphdr *sh,
2300 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2302 struct sctp_tcb *stcb;
2303 union sctp_sockstore remote_store;
2304 struct sctp_paramhdr param_buf, *phdr;
2306 int zero_address = 0;
2308 struct sockaddr_in *sin;
2311 struct sockaddr_in6 *sin6;
2314 memset(&remote_store, 0, sizeof(remote_store));
2315 phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk),
2316 ¶m_buf, sizeof(struct sctp_paramhdr));
2318 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n",
2322 ptype = (int)((uint32_t)ntohs(phdr->param_type));
2323 /* get the correlation address */
2326 case SCTP_IPV6_ADDRESS:
2328 /* ipv6 address param */
2329 struct sctp_ipv6addr_param *p6, p6_buf;
2331 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) {
2334 p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m,
2335 offset + sizeof(struct sctp_asconf_chunk),
2336 &p6_buf.ph, sizeof(p6_buf));
2338 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n",
2342 sin6 = &remote_store.sin6;
2343 sin6->sin6_family = AF_INET6;
2344 sin6->sin6_len = sizeof(*sin6);
2345 sin6->sin6_port = sh->src_port;
2346 memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr));
2347 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
2353 case SCTP_IPV4_ADDRESS:
2355 /* ipv4 address param */
2356 struct sctp_ipv4addr_param *p4, p4_buf;
2358 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) {
2361 p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m,
2362 offset + sizeof(struct sctp_asconf_chunk),
2363 &p4_buf.ph, sizeof(p4_buf));
2365 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n",
2369 sin = &remote_store.sin;
2370 sin->sin_family = AF_INET;
2371 sin->sin_len = sizeof(*sin);
2372 sin->sin_port = sh->src_port;
2373 memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr));
2374 if (sin->sin_addr.s_addr == INADDR_ANY)
2380 /* invalid address param type */
2385 stcb = sctp_findassoc_by_vtag(NULL, dst, ntohl(sh->v_tag), inp_p,
2386 netp, sh->src_port, sh->dest_port, 1, vrf_id, 0);
2388 SCTP_INP_DECR_REF(*inp_p);
2391 stcb = sctp_findassociation_ep_addr(inp_p,
2392 &remote_store.sa, netp,
2400 * allocate a sctp_inpcb and setup a temporary binding to a port/all
2401 * addresses. This way if we don't get a bind we by default pick a ephemeral
2402 * port with all addresses bound.
2405 sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
2408 * we get called when a new endpoint starts up. We need to allocate
2409 * the sctp_inpcb structure from the zone and init it. Mark it as
2410 * unbound and find a port that we can use as an ephemeral with
2411 * INADDR_ANY. If the user binds later no problem we can then add in
2412 * the specific addresses. And setup the default parameters for the
2416 struct sctp_inpcb *inp;
2418 struct timeval time;
2419 sctp_sharedkey_t *null_key;
2423 SCTP_INP_INFO_WLOCK();
2424 inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb);
2426 SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n");
2427 SCTP_INP_INFO_WUNLOCK();
2428 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2432 memset(inp, 0, sizeof(*inp));
2434 /* bump generations */
2435 /* setup socket pointers */
2436 inp->sctp_socket = so;
2437 inp->ip_inp.inp.inp_socket = so;
2438 inp->ip_inp.inp.inp_cred = crhold(so->so_cred);
2440 if (INP_SOCKAF(so) == AF_INET6) {
2441 if (MODULE_GLOBAL(ip6_auto_flowlabel)) {
2442 inp->ip_inp.inp.inp_flags |= IN6P_AUTOFLOWLABEL;
2444 if (MODULE_GLOBAL(ip6_v6only)) {
2445 inp->ip_inp.inp.inp_flags |= IN6P_IPV6_V6ONLY;
2449 inp->sctp_associd_counter = 1;
2450 inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT;
2451 inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
2453 inp->sctp_cmt_on_off = SCTP_BASE_SYSCTL(sctp_cmt_on_off);
2454 inp->ecn_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_ecn_enable);
2455 inp->prsctp_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_pr_enable);
2456 inp->auth_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_auth_enable);
2457 inp->asconf_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_asconf_enable);
2458 inp->reconfig_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_reconfig_enable);
2459 inp->nrsack_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_nrsack_enable);
2460 inp->pktdrop_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_pktdrop_enable);
2461 inp->idata_supported = 0;
2463 inp->fibnum = so->so_fibnum;
2464 /* init the small hash table we use to track asocid <-> tcb */
2465 inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark);
2466 if (inp->sctp_asocidhash == NULL) {
2467 crfree(inp->ip_inp.inp.inp_cred);
2468 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2469 SCTP_INP_INFO_WUNLOCK();
2472 SCTP_INCR_EP_COUNT();
2473 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
2474 SCTP_INP_INFO_WUNLOCK();
2476 so->so_pcb = (caddr_t)inp;
2478 if (SCTP_SO_TYPE(so) == SOCK_SEQPACKET) {
2479 /* UDP style socket */
2480 inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
2481 SCTP_PCB_FLAGS_UNBOUND);
2482 /* Be sure it is NON-BLOCKING IO for UDP */
2483 /* SCTP_SET_SO_NBIO(so); */
2484 } else if (SCTP_SO_TYPE(so) == SOCK_STREAM) {
2485 /* TCP style socket */
2486 inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
2487 SCTP_PCB_FLAGS_UNBOUND);
2488 /* Be sure we have blocking IO by default */
2490 SCTP_CLEAR_SO_NBIO(so);
2494 * unsupported socket type (RAW, etc)- in case we missed it
2497 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
2499 crfree(inp->ip_inp.inp.inp_cred);
2500 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2501 return (EOPNOTSUPP);
2503 if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) {
2504 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2505 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2506 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) {
2507 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2508 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2509 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) {
2510 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2511 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2513 inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize),
2514 &inp->sctp_hashmark);
2515 if (inp->sctp_tcbhash == NULL) {
2516 SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
2517 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2519 crfree(inp->ip_inp.inp.inp_cred);
2520 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2523 inp->def_vrf_id = vrf_id;
2525 SCTP_INP_INFO_WLOCK();
2526 SCTP_INP_LOCK_INIT(inp);
2527 INP_LOCK_INIT(&inp->ip_inp.inp, "inp", "sctpinp");
2528 SCTP_INP_READ_INIT(inp);
2529 SCTP_ASOC_CREATE_LOCK_INIT(inp);
2530 /* lock the new ep */
2531 SCTP_INP_WLOCK(inp);
2533 /* add it to the info area */
2534 LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list);
2535 SCTP_INP_INFO_WUNLOCK();
2537 TAILQ_INIT(&inp->read_queue);
2538 LIST_INIT(&inp->sctp_addr_list);
2540 LIST_INIT(&inp->sctp_asoc_list);
2542 #ifdef SCTP_TRACK_FREED_ASOCS
2544 LIST_INIT(&inp->sctp_asoc_free_list);
2546 /* Init the timer structure for signature change */
2547 SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer);
2548 inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE;
2550 /* now init the actual endpoint default data */
2553 /* setup the base timeout information */
2554 m->sctp_timeoutticks[SCTP_TIMER_SEND] = SEC_TO_TICKS(SCTP_SEND_SEC); /* needed ? */
2555 m->sctp_timeoutticks[SCTP_TIMER_INIT] = SEC_TO_TICKS(SCTP_INIT_SEC); /* needed ? */
2556 m->sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default));
2557 m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default));
2558 m->sctp_timeoutticks[SCTP_TIMER_PMTU] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default));
2559 m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default));
2560 m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default));
2561 /* all max/min max are in ms */
2562 m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default);
2563 m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default);
2564 m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default);
2565 m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default);
2566 m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default);
2567 m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default);
2568 m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default);
2569 m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default);
2570 m->def_net_pf_threshold = SCTP_BASE_SYSCTL(sctp_path_pf_threshold);
2571 m->sctp_sws_sender = SCTP_SWS_SENDER_DEF;
2572 m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF;
2573 m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default);
2574 m->fr_max_burst = SCTP_BASE_SYSCTL(sctp_fr_max_burst_default);
2576 m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module);
2577 m->sctp_default_ss_module = SCTP_BASE_SYSCTL(sctp_default_ss_module);
2578 m->max_open_streams_intome = SCTP_BASE_SYSCTL(sctp_nr_incoming_streams_default);
2579 /* number of streams to pre-open on a association */
2580 m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default);
2583 /* Add adaptation cookie */
2584 m->adaptation_layer_indicator = 0;
2585 m->adaptation_layer_indicator_provided = 0;
2587 /* seed random number generator */
2588 m->random_counter = 1;
2589 m->store_at = SCTP_SIGNATURE_SIZE;
2590 SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers));
2591 sctp_fill_random_store(m);
2593 /* Minimum cookie size */
2594 m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) +
2595 sizeof(struct sctp_state_cookie);
2596 m->size_of_a_cookie += SCTP_SIGNATURE_SIZE;
2598 /* Setup the initial secret */
2599 (void)SCTP_GETTIME_TIMEVAL(&time);
2600 m->time_of_secret_change = time.tv_sec;
2602 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
2603 m->secret_key[0][i] = sctp_select_initial_TSN(m);
2605 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
2607 /* How long is a cookie good for ? */
2608 m->def_cookie_life = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default));
2610 * Initialize authentication parameters
2612 m->local_hmacs = sctp_default_supported_hmaclist();
2613 m->local_auth_chunks = sctp_alloc_chunklist();
2614 if (inp->asconf_supported) {
2615 sctp_auth_add_chunk(SCTP_ASCONF, m->local_auth_chunks);
2616 sctp_auth_add_chunk(SCTP_ASCONF_ACK, m->local_auth_chunks);
2618 m->default_dscp = 0;
2620 m->default_flowlabel = 0;
2622 m->port = 0; /* encapsulation disabled by default */
2623 LIST_INIT(&m->shared_keys);
2624 /* add default NULL key as key id 0 */
2625 null_key = sctp_alloc_sharedkey();
2626 sctp_insert_sharedkey(&m->shared_keys, null_key);
2627 SCTP_INP_WUNLOCK(inp);
2628 #ifdef SCTP_LOG_CLOSING
2629 sctp_log_closing(inp, NULL, 12);
2636 sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp,
2637 struct sctp_tcb *stcb)
2639 struct sctp_nets *net;
2640 uint16_t lport, rport;
2641 struct sctppcbhead *head;
2642 struct sctp_laddr *laddr, *oladdr;
2644 atomic_add_int(&stcb->asoc.refcnt, 1);
2645 SCTP_TCB_UNLOCK(stcb);
2646 SCTP_INP_INFO_WLOCK();
2647 SCTP_INP_WLOCK(old_inp);
2648 SCTP_INP_WLOCK(new_inp);
2649 SCTP_TCB_LOCK(stcb);
2650 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2652 new_inp->sctp_ep.time_of_secret_change =
2653 old_inp->sctp_ep.time_of_secret_change;
2654 memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key,
2655 sizeof(old_inp->sctp_ep.secret_key));
2656 new_inp->sctp_ep.current_secret_number =
2657 old_inp->sctp_ep.current_secret_number;
2658 new_inp->sctp_ep.last_secret_number =
2659 old_inp->sctp_ep.last_secret_number;
2660 new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie;
2662 /* make it so new data pours into the new socket */
2663 stcb->sctp_socket = new_inp->sctp_socket;
2664 stcb->sctp_ep = new_inp;
2666 /* Copy the port across */
2667 lport = new_inp->sctp_lport = old_inp->sctp_lport;
2668 rport = stcb->rport;
2669 /* Pull the tcb from the old association */
2670 LIST_REMOVE(stcb, sctp_tcbhash);
2671 LIST_REMOVE(stcb, sctp_tcblist);
2672 if (stcb->asoc.in_asocid_hash) {
2673 LIST_REMOVE(stcb, sctp_tcbasocidhash);
2675 /* Now insert the new_inp into the TCP connected hash */
2676 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
2678 LIST_INSERT_HEAD(head, new_inp, sctp_hash);
2679 /* Its safe to access */
2680 new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
2682 /* Now move the tcb into the endpoint list */
2683 LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist);
2685 * Question, do we even need to worry about the ep-hash since we
2686 * only have one connection? Probably not :> so lets get rid of it
2687 * and not suck up any kernel memory in that.
2689 if (stcb->asoc.in_asocid_hash) {
2690 struct sctpasochead *lhd;
2692 lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id,
2693 new_inp->hashasocidmark)];
2694 LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash);
2696 /* Ok. Let's restart timer. */
2697 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2698 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp,
2702 SCTP_INP_INFO_WUNLOCK();
2703 if (new_inp->sctp_tcbhash != NULL) {
2704 SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark);
2705 new_inp->sctp_tcbhash = NULL;
2707 if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2708 /* Subset bound, so copy in the laddr list from the old_inp */
2709 LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) {
2710 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2711 if (laddr == NULL) {
2713 * Gak, what can we do? This assoc is really
2714 * HOSED. We probably should send an abort
2717 SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n");
2720 SCTP_INCR_LADDR_COUNT();
2721 memset(laddr, 0, sizeof(*laddr));
2722 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2723 laddr->ifa = oladdr->ifa;
2724 atomic_add_int(&laddr->ifa->refcount, 1);
2725 LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr,
2727 new_inp->laddr_count++;
2728 if (oladdr == stcb->asoc.last_used_address) {
2729 stcb->asoc.last_used_address = laddr;
2734 * Now any running timers need to be adjusted since we really don't
2735 * care if they are running or not just blast in the new_inp into
2739 stcb->asoc.dack_timer.ep = (void *)new_inp;
2740 stcb->asoc.asconf_timer.ep = (void *)new_inp;
2741 stcb->asoc.strreset_timer.ep = (void *)new_inp;
2742 stcb->asoc.shut_guard_timer.ep = (void *)new_inp;
2743 stcb->asoc.autoclose_timer.ep = (void *)new_inp;
2744 stcb->asoc.delayed_event_timer.ep = (void *)new_inp;
2745 stcb->asoc.delete_prim_timer.ep = (void *)new_inp;
2746 /* now what about the nets? */
2747 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2748 net->pmtu_timer.ep = (void *)new_inp;
2749 net->hb_timer.ep = (void *)new_inp;
2750 net->rxt_timer.ep = (void *)new_inp;
2752 SCTP_INP_WUNLOCK(new_inp);
2753 SCTP_INP_WUNLOCK(old_inp);
2757 * insert an laddr entry with the given ifa for the desired list
2760 sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
2762 struct sctp_laddr *laddr;
2764 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2765 if (laddr == NULL) {
2766 /* out of memory? */
2767 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2770 SCTP_INCR_LADDR_COUNT();
2771 memset(laddr, 0, sizeof(*laddr));
2772 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2774 laddr->action = act;
2775 atomic_add_int(&ifa->refcount, 1);
2777 LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr);
2783 * Remove an laddr entry from the local address list (on an assoc)
2786 sctp_remove_laddr(struct sctp_laddr *laddr)
2789 /* remove from the list */
2790 LIST_REMOVE(laddr, sctp_nxt_addr);
2791 sctp_free_ifa(laddr->ifa);
2792 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr);
2793 SCTP_DECR_LADDR_COUNT();
2798 /* sctp_ifap is used to bypass normal local address validation checks */
2800 sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
2801 struct sctp_ifa *sctp_ifap, struct thread *p)
2803 /* bind a ep to a socket address */
2804 struct sctppcbhead *head;
2805 struct sctp_inpcb *inp, *inp_tmp;
2806 struct inpcb *ip_inp;
2807 int port_reuse_active = 0;
2815 inp = (struct sctp_inpcb *)so->so_pcb;
2816 ip_inp = (struct inpcb *)so->so_pcb;
2819 SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port: %d\n",
2820 ntohs(((struct sockaddr_in *)addr)->sin_port));
2821 SCTPDBG(SCTP_DEBUG_PCB1, "Addr: ");
2822 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
2825 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2826 /* already did a bind, subsequent binds NOT allowed ! */
2827 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2832 panic("null proc/thread");
2835 switch (addr->sa_family) {
2839 struct sockaddr_in *sin;
2841 /* IPV6_V6ONLY socket? */
2842 if (SCTP_IPV6_V6ONLY(ip_inp)) {
2843 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2846 if (addr->sa_len != sizeof(*sin)) {
2847 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2850 sin = (struct sockaddr_in *)addr;
2851 lport = sin->sin_port;
2853 * For LOOPBACK the prison_local_ip4() call
2854 * will transmute the ip address to the
2857 if (p && (error = prison_local_ip4(p->td_ucred, &sin->sin_addr)) != 0) {
2858 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2861 if (sin->sin_addr.s_addr != INADDR_ANY) {
2871 * Only for pure IPv6 Address. (No IPv4
2874 struct sockaddr_in6 *sin6;
2876 sin6 = (struct sockaddr_in6 *)addr;
2878 if (addr->sa_len != sizeof(*sin6)) {
2879 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2882 lport = sin6->sin6_port;
2884 * For LOOPBACK the prison_local_ip6() call
2885 * will transmute the ipv6 address to the
2888 if (p && (error = prison_local_ip6(p->td_ucred, &sin6->sin6_addr,
2889 (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
2890 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2893 if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2895 /* KAME hack: embed scopeid */
2896 if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
2897 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2901 /* this must be cleared for ifa_ifwithaddr() */
2902 sin6->sin6_scope_id = 0;
2907 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EAFNOSUPPORT);
2908 return (EAFNOSUPPORT);
2911 SCTP_INP_INFO_WLOCK();
2912 SCTP_INP_WLOCK(inp);
2913 /* Setup a vrf_id to be the default for the non-bind-all case. */
2914 vrf_id = inp->def_vrf_id;
2916 /* increase our count due to the unlock we do */
2917 SCTP_INP_INCR_REF(inp);
2920 * Did the caller specify a port? if so we must see if an ep
2921 * already has this one bound.
2923 /* got to be root to get at low ports */
2924 if (ntohs(lport) < IPPORT_RESERVED) {
2925 if ((p != NULL) && ((error =
2926 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2928 SCTP_INP_DECR_REF(inp);
2929 SCTP_INP_WUNLOCK(inp);
2930 SCTP_INP_INFO_WUNLOCK();
2934 SCTP_INP_WUNLOCK(inp);
2936 vrf_id = inp->def_vrf_id;
2937 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2938 if (inp_tmp != NULL) {
2940 * lock guy returned and lower count note
2941 * that we are not bound so inp_tmp should
2942 * NEVER be inp. And it is this inp
2943 * (inp_tmp) that gets the reference bump,
2944 * so we must lower it.
2946 SCTP_INP_DECR_REF(inp_tmp);
2948 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2949 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2951 * Ok, must be one-2-one and
2952 * allowing port re-use
2954 port_reuse_active = 1;
2955 goto continue_anyway;
2957 SCTP_INP_DECR_REF(inp);
2958 SCTP_INP_INFO_WUNLOCK();
2959 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2960 return (EADDRINUSE);
2963 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2964 if (inp_tmp != NULL) {
2966 * lock guy returned and lower count note
2967 * that we are not bound so inp_tmp should
2968 * NEVER be inp. And it is this inp
2969 * (inp_tmp) that gets the reference bump,
2970 * so we must lower it.
2972 SCTP_INP_DECR_REF(inp_tmp);
2974 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2975 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2977 * Ok, must be one-2-one and
2978 * allowing port re-use
2980 port_reuse_active = 1;
2981 goto continue_anyway;
2983 SCTP_INP_DECR_REF(inp);
2984 SCTP_INP_INFO_WUNLOCK();
2985 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2986 return (EADDRINUSE);
2990 SCTP_INP_WLOCK(inp);
2992 /* verify that no lport is not used by a singleton */
2993 if ((port_reuse_active == 0) &&
2994 (inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))) {
2995 /* Sorry someone already has this one bound */
2996 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2997 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2998 port_reuse_active = 1;
3000 SCTP_INP_DECR_REF(inp);
3001 SCTP_INP_WUNLOCK(inp);
3002 SCTP_INP_INFO_WUNLOCK();
3003 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3004 return (EADDRINUSE);
3009 uint16_t first, last, candidate;
3013 if (ip_inp->inp_flags & INP_HIGHPORT) {
3014 first = MODULE_GLOBAL(ipport_hifirstauto);
3015 last = MODULE_GLOBAL(ipport_hilastauto);
3016 } else if (ip_inp->inp_flags & INP_LOWPORT) {
3018 priv_check(p, PRIV_NETINET_RESERVEDPORT)
3020 SCTP_INP_DECR_REF(inp);
3021 SCTP_INP_WUNLOCK(inp);
3022 SCTP_INP_INFO_WUNLOCK();
3023 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
3026 first = MODULE_GLOBAL(ipport_lowfirstauto);
3027 last = MODULE_GLOBAL(ipport_lowlastauto);
3029 first = MODULE_GLOBAL(ipport_firstauto);
3030 last = MODULE_GLOBAL(ipport_lastauto);
3039 count = last - first + 1; /* number of candidates */
3040 candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count);
3044 if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) {
3049 SCTP_INP_DECR_REF(inp);
3050 SCTP_INP_WUNLOCK(inp);
3051 SCTP_INP_INFO_WUNLOCK();
3052 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3053 return (EADDRINUSE);
3055 if (candidate == last)
3058 candidate = candidate + 1;
3061 lport = htons(candidate);
3063 SCTP_INP_DECR_REF(inp);
3064 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE |
3065 SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
3067 * this really should not happen. The guy did a non-blocking
3068 * bind and then did a close at the same time.
3070 SCTP_INP_WUNLOCK(inp);
3071 SCTP_INP_INFO_WUNLOCK();
3072 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3075 /* ok we look clear to give out this port, so lets setup the binding */
3077 /* binding to all addresses, so just set in the proper flags */
3078 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL;
3079 /* set the automatic addr changes from kernel flag */
3080 if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) {
3081 sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3082 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3084 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3085 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3087 if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) {
3088 sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3090 sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3093 * set the automatic mobility_base from kernel flag (by
3096 if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) {
3097 sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE);
3098 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3100 sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE);
3101 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3104 * set the automatic mobility_fasthandoff from kernel flag
3107 if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) {
3108 sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF);
3109 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3111 sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF);
3112 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3116 * bind specific, make sure flags is off and add a new
3117 * address structure to the sctp_addr_list inside the ep
3120 * We will need to allocate one and insert it at the head.
3121 * The socketopt call can just insert new addresses in there
3122 * as well. It will also have to do the embed scope kame
3123 * hack too (before adding).
3125 struct sctp_ifa *ifa;
3126 union sctp_sockstore store;
3128 memset(&store, 0, sizeof(store));
3129 switch (addr->sa_family) {
3132 memcpy(&store.sin, addr, sizeof(struct sockaddr_in));
3133 store.sin.sin_port = 0;
3138 memcpy(&store.sin6, addr, sizeof(struct sockaddr_in6));
3139 store.sin6.sin6_port = 0;
3146 * first find the interface with the bound address need to
3147 * zero out the port to find the address! yuck! can't do
3148 * this earlier since need port for sctp_pcb_findep()
3150 if (sctp_ifap != NULL) {
3154 * Note for BSD we hit here always other O/S's will
3155 * pass things in via the sctp_ifap argument
3158 ifa = sctp_find_ifa_by_addr(&store.sa,
3159 vrf_id, SCTP_ADDR_NOT_LOCKED);
3162 /* Can't find an interface with that address */
3163 SCTP_INP_WUNLOCK(inp);
3164 SCTP_INP_INFO_WUNLOCK();
3165 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRNOTAVAIL);
3166 return (EADDRNOTAVAIL);
3169 if (addr->sa_family == AF_INET6) {
3170 /* GAK, more FIXME IFA lock? */
3171 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
3172 /* Can't bind a non-existent addr. */
3173 SCTP_INP_WUNLOCK(inp);
3174 SCTP_INP_INFO_WUNLOCK();
3175 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3180 /* we're not bound all */
3181 inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL;
3182 /* allow bindx() to send ASCONF's for binding changes */
3183 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3184 /* clear automatic addr changes from kernel flag */
3185 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3187 /* add this address to the endpoint list */
3188 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0);
3190 SCTP_INP_WUNLOCK(inp);
3191 SCTP_INP_INFO_WUNLOCK();
3196 /* find the bucket */
3197 if (port_reuse_active) {
3198 /* Put it into tcp 1-2-1 hash */
3199 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))];
3200 inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
3202 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))];
3204 /* put it in the bucket */
3205 LIST_INSERT_HEAD(head, inp, sctp_hash);
3206 SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n",
3207 (void *)head, ntohs(lport), port_reuse_active);
3208 /* set in the port */
3209 inp->sctp_lport = lport;
3211 /* turn off just the unbound flag */
3212 inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
3213 SCTP_INP_WUNLOCK(inp);
3214 SCTP_INP_INFO_WUNLOCK();
3220 sctp_iterator_inp_being_freed(struct sctp_inpcb *inp)
3222 struct sctp_iterator *it, *nit;
3225 * We enter with the only the ITERATOR_LOCK in place and a write
3226 * lock on the inp_info stuff.
3228 it = sctp_it_ctl.cur_it;
3229 if (it && (it->vn != curvnet)) {
3230 /* Its not looking at our VNET */
3233 if (it && (it->inp == inp)) {
3235 * This is tricky and we hold the iterator lock, but when it
3236 * returns and gets the lock (when we release it) the
3237 * iterator will try to operate on inp. We need to stop that
3238 * from happening. But of course the iterator has a
3239 * reference on the stcb and inp. We can mark it and it will
3242 * If its a single iterator situation, we set the end
3243 * iterator flag. Otherwise we set the iterator to go to the
3247 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3248 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
3250 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_INP;
3254 * Now go through and remove any single reference to our inp that
3255 * may be still pending on the list
3257 SCTP_IPI_ITERATOR_WQ_LOCK();
3258 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
3259 if (it->vn != curvnet) {
3262 if (it->inp == inp) {
3263 /* This one points to me is it inp specific? */
3264 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3265 /* Remove and free this one */
3266 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
3268 if (it->function_atend != NULL) {
3269 (*it->function_atend) (it->pointer, it->val);
3271 SCTP_FREE(it, SCTP_M_ITER);
3273 it->inp = LIST_NEXT(it->inp, sctp_list);
3275 SCTP_INP_INCR_REF(it->inp);
3279 * When its put in the refcnt is incremented so decr
3282 SCTP_INP_DECR_REF(inp);
3285 SCTP_IPI_ITERATOR_WQ_UNLOCK();
3288 /* release sctp_inpcb unbind the port */
3290 sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
3293 * Here we free a endpoint. We must find it (if it is in the Hash
3294 * table) and remove it from there. Then we must also find it in the
3295 * overall list and remove it from there. After all removals are
3296 * complete then any timer has to be stopped. Then start the actual
3297 * freeing. a) Any local lists. b) Any associations. c) The hash of
3298 * all associations. d) finally the ep itself.
3300 struct sctp_tcb *asoc, *nasoc;
3301 struct sctp_laddr *laddr, *nladdr;
3302 struct inpcb *ip_pcb;
3304 int being_refed = 0;
3305 struct sctp_queued_to_read *sq, *nsq;
3307 sctp_sharedkey_t *shared_key, *nshared_key;
3310 #ifdef SCTP_LOG_CLOSING
3311 sctp_log_closing(inp, NULL, 0);
3313 SCTP_ITERATOR_LOCK();
3314 /* mark any iterators on the list or being processed */
3315 sctp_iterator_inp_being_freed(inp);
3316 SCTP_ITERATOR_UNLOCK();
3317 so = inp->sctp_socket;
3318 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
3319 /* been here before.. eeks.. get out of here */
3320 SCTP_PRINTF("This conflict in free SHOULD not be happening! from %d, imm %d\n", from, immediate);
3321 #ifdef SCTP_LOG_CLOSING
3322 sctp_log_closing(inp, NULL, 1);
3326 SCTP_ASOC_CREATE_LOCK(inp);
3327 SCTP_INP_INFO_WLOCK();
3329 SCTP_INP_WLOCK(inp);
3330 if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
3331 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP;
3332 /* socket is gone, so no more wakeups allowed */
3333 inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE;
3334 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
3335 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
3338 /* First time through we have the socket lock, after that no more. */
3339 sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL,
3340 SCTP_FROM_SCTP_PCB + SCTP_LOC_1);
3343 sctp_m_freem(inp->control);
3344 inp->control = NULL;
3347 sctp_m_freem(inp->pkt);
3350 ip_pcb = &inp->ip_inp.inp; /* we could just cast the main pointer
3351 * here but I will be nice :> (i.e.
3353 if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
3357 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3358 SCTP_TCB_LOCK(asoc);
3359 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3360 /* Skip guys being freed */
3362 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3364 * Special case - we did not start a
3365 * kill timer on the asoc due to it
3366 * was not closed. So go ahead and
3369 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3370 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3372 SCTP_TCB_UNLOCK(asoc);
3375 if (((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_WAIT) ||
3376 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_ECHOED)) &&
3377 (asoc->asoc.total_output_queue_size == 0)) {
3379 * If we have data in queue, we don't want
3380 * to just free since the app may have done,
3381 * send()/close or connect/send/close. And
3382 * it wants the data to get across first.
3384 /* Just abandon things in the front states */
3385 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE,
3386 SCTP_FROM_SCTP_PCB + SCTP_LOC_2) == 0) {
3391 /* Disconnect the socket please */
3392 asoc->sctp_socket = NULL;
3393 asoc->asoc.state |= SCTP_STATE_CLOSED_SOCKET;
3394 if ((asoc->asoc.size_on_reasm_queue > 0) ||
3395 (asoc->asoc.control_pdapi) ||
3396 (asoc->asoc.size_on_all_streams > 0) ||
3397 (so && (so->so_rcv.sb_cc > 0))) {
3398 /* Left with Data unread */
3399 struct mbuf *op_err;
3401 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3402 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_3;
3403 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3404 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3405 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3406 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3407 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3409 if (sctp_free_assoc(inp, asoc,
3410 SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_4) == 0) {
3414 } else if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3415 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3416 (asoc->asoc.stream_queue_cnt == 0)) {
3417 if ((*asoc->asoc.ss_functions.sctp_ss_is_user_msgs_incomplete) (asoc, &asoc->asoc)) {
3420 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
3421 (SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
3422 struct sctp_nets *netp;
3425 * there is nothing queued to send,
3426 * so I send shutdown
3428 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3429 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3430 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3432 SCTP_SET_STATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_SENT);
3433 SCTP_CLEAR_SUBSTATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_PENDING);
3434 sctp_stop_timers_for_shutdown(asoc);
3435 if (asoc->asoc.alternate) {
3436 netp = asoc->asoc.alternate;
3438 netp = asoc->asoc.primary_destination;
3440 sctp_send_shutdown(asoc, netp);
3441 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, asoc->sctp_ep, asoc,
3443 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3444 asoc->asoc.primary_destination);
3445 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED);
3448 /* mark into shutdown pending */
3449 asoc->asoc.state |= SCTP_STATE_SHUTDOWN_PENDING;
3450 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3451 asoc->asoc.primary_destination);
3452 if ((*asoc->asoc.ss_functions.sctp_ss_is_user_msgs_incomplete) (asoc, &asoc->asoc)) {
3453 asoc->asoc.state |= SCTP_STATE_PARTIAL_MSG_LEFT;
3455 if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3456 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3457 (asoc->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
3458 struct mbuf *op_err;
3461 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3462 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_5;
3463 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3464 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3465 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3466 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3467 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3469 if (sctp_free_assoc(inp, asoc,
3470 SCTP_PCBFREE_NOFORCE,
3471 SCTP_FROM_SCTP_PCB + SCTP_LOC_6) == 0) {
3476 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
3480 SCTP_TCB_UNLOCK(asoc);
3482 /* now is there some left in our SHUTDOWN state? */
3484 #ifdef SCTP_LOG_CLOSING
3485 sctp_log_closing(inp, NULL, 2);
3487 inp->sctp_socket = NULL;
3488 SCTP_INP_WUNLOCK(inp);
3489 SCTP_ASOC_CREATE_UNLOCK(inp);
3490 SCTP_INP_INFO_WUNLOCK();
3494 inp->sctp_socket = NULL;
3495 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) !=
3496 SCTP_PCB_FLAGS_UNBOUND) {
3498 * ok, this guy has been bound. It's port is somewhere in
3499 * the SCTP_BASE_INFO(hash table). Remove it!
3501 LIST_REMOVE(inp, sctp_hash);
3502 inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND;
3505 * If there is a timer running to kill us, forget it, since it may
3506 * have a contest on the INP lock.. which would cause us to die ...
3509 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3510 SCTP_TCB_LOCK(asoc);
3511 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3512 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3513 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3514 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3517 SCTP_TCB_UNLOCK(asoc);
3520 /* Free associations that are NOT killing us */
3521 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_COOKIE_WAIT) &&
3522 ((asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) {
3523 struct mbuf *op_err;
3525 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3526 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_7;
3527 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3528 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3529 } else if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3531 SCTP_TCB_UNLOCK(asoc);
3534 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3535 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3536 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3538 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_FORCE,
3539 SCTP_FROM_SCTP_PCB + SCTP_LOC_8) == 0) {
3544 /* Ok we have someone out there that will kill us */
3545 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3546 #ifdef SCTP_LOG_CLOSING
3547 sctp_log_closing(inp, NULL, 3);
3549 SCTP_INP_WUNLOCK(inp);
3550 SCTP_ASOC_CREATE_UNLOCK(inp);
3551 SCTP_INP_INFO_WUNLOCK();
3554 if (SCTP_INP_LOCK_CONTENDED(inp))
3556 if (SCTP_INP_READ_CONTENDED(inp))
3558 if (SCTP_ASOC_CREATE_LOCK_CONTENDED(inp))
3561 if ((inp->refcount) ||
3563 (inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) {
3564 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3565 #ifdef SCTP_LOG_CLOSING
3566 sctp_log_closing(inp, NULL, 4);
3568 sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
3569 SCTP_INP_WUNLOCK(inp);
3570 SCTP_ASOC_CREATE_UNLOCK(inp);
3571 SCTP_INP_INFO_WUNLOCK();
3574 inp->sctp_ep.signature_change.type = 0;
3575 inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE;
3577 * Remove it from the list .. last thing we need a lock for.
3579 LIST_REMOVE(inp, sctp_list);
3580 SCTP_INP_WUNLOCK(inp);
3581 SCTP_ASOC_CREATE_UNLOCK(inp);
3582 SCTP_INP_INFO_WUNLOCK();
3584 * Now we release all locks. Since this INP cannot be found anymore
3585 * except possibly by the kill timer that might be running. We call
3586 * the drain function here. It should hit the case were it sees the
3587 * ACTIVE flag cleared and exit out freeing us to proceed and
3588 * destroy everything.
3590 if (from != SCTP_CALLED_FROM_INPKILL_TIMER) {
3591 (void)SCTP_OS_TIMER_STOP_DRAIN(&inp->sctp_ep.signature_change.timer);
3593 /* Probably un-needed */
3594 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3597 #ifdef SCTP_LOG_CLOSING
3598 sctp_log_closing(inp, NULL, 5);
3602 if ((inp->sctp_asocidhash) != NULL) {
3603 SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark);
3604 inp->sctp_asocidhash = NULL;
3606 /* sa_ignore FREED_MEMORY */
3607 TAILQ_FOREACH_SAFE(sq, &inp->read_queue, next, nsq) {
3608 /* Its only abandoned if it had data left */
3610 SCTP_STAT_INCR(sctps_left_abandon);
3612 TAILQ_REMOVE(&inp->read_queue, sq, next);
3613 sctp_free_remote_addr(sq->whoFrom);
3615 so->so_rcv.sb_cc -= sq->length;
3617 sctp_m_freem(sq->data);
3621 * no need to free the net count, since at this point all
3624 sctp_free_a_readq(NULL, sq);
3626 /* Now the sctp_pcb things */
3628 * free each asoc if it is not already closed/free. we can't use the
3629 * macro here since le_next will get freed as part of the
3630 * sctp_free_assoc() call.
3632 if (ip_pcb->inp_options) {
3633 (void)sctp_m_free(ip_pcb->inp_options);
3634 ip_pcb->inp_options = 0;
3637 if (ip_pcb->inp_vflag & INP_IPV6) {
3638 struct in6pcb *in6p;
3640 in6p = (struct in6pcb *)inp;
3641 ip6_freepcbopts(in6p->in6p_outputopts);
3644 ip_pcb->inp_vflag = 0;
3645 /* free up authentication fields */
3646 if (inp->sctp_ep.local_auth_chunks != NULL)
3647 sctp_free_chunklist(inp->sctp_ep.local_auth_chunks);
3648 if (inp->sctp_ep.local_hmacs != NULL)
3649 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3651 LIST_FOREACH_SAFE(shared_key, &inp->sctp_ep.shared_keys, next, nshared_key) {
3652 LIST_REMOVE(shared_key, next);
3653 sctp_free_sharedkey(shared_key);
3654 /* sa_ignore FREED_MEMORY */
3658 * if we have an address list the following will free the list of
3659 * ifaddr's that are set into this ep. Again macro limitations here,
3660 * since the LIST_FOREACH could be a bad idea.
3662 LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
3663 sctp_remove_laddr(laddr);
3666 #ifdef SCTP_TRACK_FREED_ASOCS
3668 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_free_list, sctp_tcblist, nasoc) {
3669 LIST_REMOVE(asoc, sctp_tcblist);
3670 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), asoc);
3671 SCTP_DECR_ASOC_COUNT();
3673 /* *** END TEMP CODE *** */
3675 /* Now lets see about freeing the EP hash table. */
3676 if (inp->sctp_tcbhash != NULL) {
3677 SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
3678 inp->sctp_tcbhash = NULL;
3680 /* Now we must put the ep memory back into the zone pool */
3681 crfree(inp->ip_inp.inp.inp_cred);
3682 INP_LOCK_DESTROY(&inp->ip_inp.inp);
3683 SCTP_INP_LOCK_DESTROY(inp);
3684 SCTP_INP_READ_DESTROY(inp);
3685 SCTP_ASOC_CREATE_LOCK_DESTROY(inp);
3686 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
3687 SCTP_DECR_EP_COUNT();
3692 sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
3694 struct sctp_nets *net;
3696 /* locate the address */
3697 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3698 if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr))
3706 sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
3708 struct sctp_ifa *sctp_ifa;
3710 sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED);
3719 * add's a remote endpoint address, done with the INIT/INIT-ACK as well as
3720 * when a ASCONF arrives that adds it. It will also initialize all the cwnd
3724 sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
3725 struct sctp_nets **netp, uint16_t port, int set_scope, int from)
3728 * The following is redundant to the same lines in the
3729 * sctp_aloc_assoc() but is needed since others call the add address
3732 struct sctp_nets *net, *netfirst;
3735 SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ",
3737 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr);
3739 netfirst = sctp_findnet(stcb, newaddr);
3742 * Lie and return ok, we don't want to make the association
3743 * go away for this behavior. It will happen in the TCP
3744 * model in a connected socket. It does not reach the hash
3745 * table until after the association is built so it can't be
3746 * found. Mark as reachable, since the initial creation will
3747 * have been cleared and the NOT_IN_ASSOC flag will have
3748 * been added... and we don't want to end up removing it
3751 if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) {
3752 netfirst->dest_state = (SCTP_ADDR_REACHABLE |
3753 SCTP_ADDR_UNCONFIRMED);
3755 netfirst->dest_state = SCTP_ADDR_REACHABLE;
3761 switch (newaddr->sa_family) {
3765 struct sockaddr_in *sin;
3767 sin = (struct sockaddr_in *)newaddr;
3768 if (sin->sin_addr.s_addr == 0) {
3769 /* Invalid address */
3772 /* zero out the zero area */
3773 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
3775 /* assure len is set */
3776 sin->sin_len = sizeof(struct sockaddr_in);
3778 if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
3779 stcb->asoc.scope.ipv4_local_scope = 1;
3782 /* Validate the address is in scope */
3783 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) &&
3784 (stcb->asoc.scope.ipv4_local_scope == 0)) {
3794 struct sockaddr_in6 *sin6;
3796 sin6 = (struct sockaddr_in6 *)newaddr;
3797 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3798 /* Invalid address */
3801 /* assure len is set */
3802 sin6->sin6_len = sizeof(struct sockaddr_in6);
3804 if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) {
3805 stcb->asoc.scope.loopback_scope = 1;
3806 stcb->asoc.scope.local_scope = 0;
3807 stcb->asoc.scope.ipv4_local_scope = 1;
3808 stcb->asoc.scope.site_scope = 1;
3809 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
3811 * If the new destination is a
3812 * LINK_LOCAL we must have common
3813 * site scope. Don't set the local
3814 * scope since we may not share all
3815 * links, only loopback can do this.
3816 * Links on the local network would
3817 * also be on our private network
3820 stcb->asoc.scope.ipv4_local_scope = 1;
3821 stcb->asoc.scope.site_scope = 1;
3822 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
3824 * If the new destination is
3825 * SITE_LOCAL then we must have site
3828 stcb->asoc.scope.site_scope = 1;
3831 /* Validate the address is in scope */
3832 if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) &&
3833 (stcb->asoc.scope.loopback_scope == 0)) {
3835 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
3836 (stcb->asoc.scope.local_scope == 0)) {
3838 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
3839 (stcb->asoc.scope.site_scope == 0)) {
3847 /* not supported family type */
3850 net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets);
3854 SCTP_INCR_RADDR_COUNT();
3855 memset(net, 0, sizeof(struct sctp_nets));
3856 (void)SCTP_GETTIME_TIMEVAL(&net->start_time);
3857 memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len);
3858 switch (newaddr->sa_family) {
3861 ((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport;
3866 ((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport;
3872 net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id);
3873 if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) {
3874 stcb->asoc.scope.loopback_scope = 1;
3875 stcb->asoc.scope.ipv4_local_scope = 1;
3876 stcb->asoc.scope.local_scope = 0;
3877 stcb->asoc.scope.site_scope = 1;
3880 net->failure_threshold = stcb->asoc.def_net_failure;
3881 net->pf_threshold = stcb->asoc.def_net_pf_threshold;
3882 if (addr_inscope == 0) {
3883 net->dest_state = (SCTP_ADDR_REACHABLE |
3884 SCTP_ADDR_OUT_OF_SCOPE);
3886 if (from == SCTP_ADDR_IS_CONFIRMED)
3887 /* SCTP_ADDR_IS_CONFIRMED is passed by connect_x */
3888 net->dest_state = SCTP_ADDR_REACHABLE;
3890 net->dest_state = SCTP_ADDR_REACHABLE |
3891 SCTP_ADDR_UNCONFIRMED;
3894 * We set this to 0, the timer code knows that this means its an
3897 net->rto_needed = 1;
3899 net->RTO_measured = 0;
3900 stcb->asoc.numnets++;
3902 net->cwr_window_tsn = net->last_cwr_tsn = stcb->asoc.sending_seq - 1;
3904 net->dscp = stcb->asoc.default_dscp;
3906 net->flowlabel = stcb->asoc.default_flowlabel;
3908 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
3909 net->dest_state |= SCTP_ADDR_NOHB;
3911 net->dest_state &= ~SCTP_ADDR_NOHB;
3913 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DO_NOT_PMTUD)) {
3914 net->dest_state |= SCTP_ADDR_NO_PMTUD;
3916 net->dest_state &= ~SCTP_ADDR_NO_PMTUD;
3918 net->heart_beat_delay = stcb->asoc.heart_beat_delay;
3919 /* Init the timer structure */
3920 SCTP_OS_TIMER_INIT(&net->rxt_timer.timer);
3921 SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer);
3922 SCTP_OS_TIMER_INIT(&net->hb_timer.timer);
3924 /* Now generate a route for this guy */
3926 /* KAME hack: embed scopeid */
3927 if (newaddr->sa_family == AF_INET6) {
3928 struct sockaddr_in6 *sin6;
3930 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3931 (void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone));
3932 sin6->sin6_scope_id = 0;
3935 SCTP_RTALLOC((sctp_route_t *)&net->ro,
3937 stcb->sctp_ep->fibnum);
3939 net->src_addr_selected = 0;
3940 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) {
3941 /* Get source address */
3942 net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep,
3944 (sctp_route_t *)&net->ro,
3948 if (stcb->asoc.default_mtu > 0) {
3949 net->mtu = stcb->asoc.default_mtu;
3950 switch (net->ro._l_addr.sa.sa_family) {
3953 net->mtu += SCTP_MIN_V4_OVERHEAD;
3958 net->mtu += SCTP_MIN_OVERHEAD;
3964 #if defined(INET) || defined(INET6)
3966 net->mtu += (uint32_t)sizeof(struct udphdr);
3969 } else if (net->ro._s_addr != NULL) {
3970 uint32_t imtu, rmtu, hcmtu;
3972 net->src_addr_selected = 1;
3973 /* Now get the interface MTU */
3974 if (net->ro._s_addr->ifn_p != NULL) {
3975 imtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p);
3979 rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_rt);
3980 hcmtu = sctp_hc_get_mtu(&net->ro._l_addr, stcb->sctp_ep->fibnum);
3981 net->mtu = sctp_min_mtu(hcmtu, rmtu, imtu);
3984 * Start things off to match mtu of
3987 SCTP_SET_MTU_OF_ROUTE(&net->ro._l_addr.sa,
3988 net->ro.ro_rt, net->mtu);
3992 if (net->mtu == 0) {
3993 if (stcb->asoc.default_mtu > 0) {
3994 net->mtu = stcb->asoc.default_mtu;
3995 switch (net->ro._l_addr.sa.sa_family) {
3998 net->mtu += SCTP_MIN_V4_OVERHEAD;
4003 net->mtu += SCTP_MIN_OVERHEAD;
4009 #if defined(INET) || defined(INET6)
4011 net->mtu += (uint32_t)sizeof(struct udphdr);
4015 switch (newaddr->sa_family) {
4018 net->mtu = SCTP_DEFAULT_MTU;
4031 #if defined(INET) || defined(INET6)
4033 net->mtu -= (uint32_t)sizeof(struct udphdr);
4036 if (from == SCTP_ALLOC_ASOC) {
4037 stcb->asoc.smallest_mtu = net->mtu;
4039 if (stcb->asoc.smallest_mtu > net->mtu) {
4040 sctp_pathmtu_adjustment(stcb, net->mtu);
4043 if (newaddr->sa_family == AF_INET6) {
4044 struct sockaddr_in6 *sin6;
4046 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
4047 (void)sa6_recoverscope(sin6);
4051 /* JRS - Use the congestion control given in the CC module */
4052 if (stcb->asoc.cc_functions.sctp_set_initial_cc_param != NULL)
4053 (*stcb->asoc.cc_functions.sctp_set_initial_cc_param) (stcb, net);
4056 * CMT: CUC algo - set find_pseudo_cumack to TRUE (1) at beginning
4057 * of assoc (2005/06/27, iyengar@cis.udel.edu)
4059 net->find_pseudo_cumack = 1;
4060 net->find_rtx_pseudo_cumack = 1;
4061 /* Choose an initial flowid. */
4062 net->flowid = stcb->asoc.my_vtag ^
4063 ntohs(stcb->rport) ^
4064 ntohs(stcb->sctp_ep->sctp_lport);
4065 net->flowtype = M_HASHTYPE_OPAQUE_HASH;
4069 netfirst = TAILQ_FIRST(&stcb->asoc.nets);
4070 if (net->ro.ro_rt == NULL) {
4071 /* Since we have no route put it at the back */
4072 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4073 } else if (netfirst == NULL) {
4074 /* We are the first one in the pool. */
4075 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4076 } else if (netfirst->ro.ro_rt == NULL) {
4078 * First one has NO route. Place this one ahead of the first
4081 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4082 } else if (net->ro.ro_rt->rt_ifp != netfirst->ro.ro_rt->rt_ifp) {
4084 * This one has a different interface than the one at the
4085 * top of the list. Place it ahead.
4087 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4090 * Ok we have the same interface as the first one. Move
4091 * forward until we find either a) one with a NULL route...
4092 * insert ahead of that b) one with a different ifp.. insert
4093 * after that. c) end of the list.. insert at the tail.
4095 struct sctp_nets *netlook;
4098 netlook = TAILQ_NEXT(netfirst, sctp_next);
4099 if (netlook == NULL) {
4100 /* End of the list */
4101 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4103 } else if (netlook->ro.ro_rt == NULL) {
4104 /* next one has NO route */
4105 TAILQ_INSERT_BEFORE(netfirst, net, sctp_next);
4107 } else if (netlook->ro.ro_rt->rt_ifp != net->ro.ro_rt->rt_ifp) {
4108 TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook,
4114 } while (netlook != NULL);
4117 /* got to have a primary set */
4118 if (stcb->asoc.primary_destination == 0) {
4119 stcb->asoc.primary_destination = net;
4120 } else if ((stcb->asoc.primary_destination->ro.ro_rt == NULL) &&
4122 ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
4123 /* No route to current primary adopt new primary */
4124 stcb->asoc.primary_destination = net;
4126 /* Validate primary is first */
4127 net = TAILQ_FIRST(&stcb->asoc.nets);
4128 if ((net != stcb->asoc.primary_destination) &&
4129 (stcb->asoc.primary_destination)) {
4131 * first one on the list is NOT the primary sctp_cmpaddr()
4132 * is much more efficient if the primary is the first on the
4135 TAILQ_REMOVE(&stcb->asoc.nets,
4136 stcb->asoc.primary_destination, sctp_next);
4137 TAILQ_INSERT_HEAD(&stcb->asoc.nets,
4138 stcb->asoc.primary_destination, sctp_next);
4145 sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
4148 struct sctpasochead *head;
4149 struct sctp_tcb *lstcb;
4151 SCTP_INP_WLOCK(inp);
4153 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
4155 SCTP_INP_WUNLOCK(inp);
4159 * We don't allow assoc id to be one of SCTP_FUTURE_ASSOC,
4160 * SCTP_CURRENT_ASSOC and SCTP_ALL_ASSOC.
4162 if (inp->sctp_associd_counter <= SCTP_ALL_ASSOC) {
4163 inp->sctp_associd_counter = SCTP_ALL_ASSOC + 1;
4165 id = inp->sctp_associd_counter;
4166 inp->sctp_associd_counter++;
4167 lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t)id, 0);
4171 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
4172 LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash);
4173 stcb->asoc.in_asocid_hash = 1;
4174 SCTP_INP_WUNLOCK(inp);
4179 * allocate an association and add it to the endpoint. The caller must be
4180 * careful to add all additional addresses once they are know right away or
4181 * else the assoc will be may experience a blackout scenario.
4184 sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
4185 int *error, uint32_t override_tag, uint32_t vrf_id,
4186 uint16_t o_streams, uint16_t port,
4190 /* note the p argument is only valid in unbound sockets */
4192 struct sctp_tcb *stcb;
4193 struct sctp_association *asoc;
4194 struct sctpasochead *head;
4199 * Assumption made here: Caller has done a
4200 * sctp_findassociation_ep_addr(ep, addr's); to make sure the
4201 * address does not exist already.
4203 if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) {
4204 /* Hit max assoc, sorry no more */
4205 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4209 if (firstaddr == NULL) {
4210 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4214 SCTP_INP_RLOCK(inp);
4215 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
4216 ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) ||
4217 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4219 * If its in the TCP pool, its NOT allowed to create an
4220 * association. The parent listener needs to call
4221 * sctp_aloc_assoc.. or the one-2-many socket. If a peeled
4222 * off, or connected one does this.. its an error.
4224 SCTP_INP_RUNLOCK(inp);
4225 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4229 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
4230 (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)) {
4231 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) ||
4232 (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED)) {
4233 SCTP_INP_RUNLOCK(inp);
4234 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4239 SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:");
4242 SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr);
4243 switch (firstaddr->sa_family) {
4246 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4247 ntohs(((struct sockaddr_in *)firstaddr)->sin_port));
4252 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4253 ntohs(((struct sockaddr_in6 *)firstaddr)->sin6_port));
4260 SCTPDBG(SCTP_DEBUG_PCB3, "None\n");
4262 #endif /* SCTP_DEBUG */
4263 switch (firstaddr->sa_family) {
4267 struct sockaddr_in *sin;
4269 sin = (struct sockaddr_in *)firstaddr;
4270 if ((ntohs(sin->sin_port) == 0) ||
4271 (sin->sin_addr.s_addr == INADDR_ANY) ||
4272 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
4273 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
4274 /* Invalid address */
4275 SCTP_INP_RUNLOCK(inp);
4276 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4280 rport = sin->sin_port;
4287 struct sockaddr_in6 *sin6;
4289 sin6 = (struct sockaddr_in6 *)firstaddr;
4290 if ((ntohs(sin6->sin6_port) == 0) ||
4291 IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
4292 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
4293 /* Invalid address */
4294 SCTP_INP_RUNLOCK(inp);
4295 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4299 rport = sin6->sin6_port;
4304 /* not supported family type */
4305 SCTP_INP_RUNLOCK(inp);
4306 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4310 SCTP_INP_RUNLOCK(inp);
4311 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4313 * If you have not performed a bind, then we need to do the
4314 * ephemeral bind for you.
4316 if ((err = sctp_inpcb_bind(inp->sctp_socket,
4317 (struct sockaddr *)NULL,
4318 (struct sctp_ifa *)NULL,
4321 /* bind error, probably perm */
4326 stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb);
4328 /* out of memory? */
4329 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
4333 SCTP_INCR_ASOC_COUNT();
4335 memset(stcb, 0, sizeof(*stcb));
4338 asoc->assoc_id = sctp_aloc_a_assoc_id(inp, 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 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4350 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4351 SCTP_DECR_ASOC_COUNT();
4356 SCTP_INP_INFO_WLOCK();
4357 SCTP_INP_WLOCK(inp);
4358 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
4359 /* inpcb freed while alloc going on */
4360 SCTP_TCB_LOCK_DESTROY(stcb);
4361 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4362 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4363 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4364 SCTP_INP_WUNLOCK(inp);
4365 SCTP_INP_INFO_WUNLOCK();
4366 SCTP_DECR_ASOC_COUNT();
4367 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4371 SCTP_TCB_LOCK(stcb);
4373 /* now that my_vtag is set, add it to the hash */
4374 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))];
4375 /* put it in the bucket in the vtag hash of assoc's for the system */
4376 LIST_INSERT_HEAD(head, stcb, sctp_asocs);
4377 SCTP_INP_INFO_WUNLOCK();
4379 if ((err = sctp_add_remote_addr(stcb, firstaddr, NULL, port, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC))) {
4380 /* failure.. memory error? */
4381 if (asoc->strmout) {
4382 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4383 asoc->strmout = NULL;
4385 if (asoc->mapping_array) {
4386 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4387 asoc->mapping_array = NULL;
4389 if (asoc->nr_mapping_array) {
4390 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4391 asoc->nr_mapping_array = NULL;
4393 SCTP_DECR_ASOC_COUNT();
4394 SCTP_TCB_UNLOCK(stcb);
4395 SCTP_TCB_LOCK_DESTROY(stcb);
4396 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4397 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4398 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4399 SCTP_INP_WUNLOCK(inp);
4400 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4404 /* Init all the timers */
4405 SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer);
4406 SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer);
4407 SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer);
4408 SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer);
4409 SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer);
4410 SCTP_OS_TIMER_INIT(&asoc->delayed_event_timer.timer);
4411 SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer);
4413 LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist);
4414 /* now file the port under the hash as well */
4415 if (inp->sctp_tcbhash != NULL) {
4416 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport,
4417 inp->sctp_hashmark)];
4418 LIST_INSERT_HEAD(head, stcb, sctp_tcbhash);
4420 SCTP_INP_WUNLOCK(inp);
4421 SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", (void *)stcb);
4427 sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
4429 struct sctp_association *asoc;
4433 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4434 if (net == asoc->primary_destination) {
4436 struct sctp_nets *lnet;
4438 lnet = TAILQ_FIRST(&asoc->nets);
4440 * Mobility adaptation Ideally, if deleted destination is
4441 * the primary, it becomes a fast retransmission trigger by
4442 * the subsequent SET PRIMARY. (by micchie)
4444 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
4445 SCTP_MOBILITY_BASE) ||
4446 sctp_is_mobility_feature_on(stcb->sctp_ep,
4447 SCTP_MOBILITY_FASTHANDOFF)) {
4448 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n");
4449 if (asoc->deleted_primary != NULL) {
4450 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n");
4453 asoc->deleted_primary = net;
4454 atomic_add_int(&net->ref_count, 1);
4455 memset(&net->lastsa, 0, sizeof(net->lastsa));
4456 memset(&net->lastsv, 0, sizeof(net->lastsv));
4457 sctp_mobility_feature_on(stcb->sctp_ep,
4458 SCTP_MOBILITY_PRIM_DELETED);
4459 sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED,
4460 stcb->sctp_ep, stcb, NULL);
4463 /* Try to find a confirmed primary */
4464 asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0);
4466 if (net == asoc->last_data_chunk_from) {
4468 asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets);
4470 if (net == asoc->last_control_chunk_from) {
4472 asoc->last_control_chunk_from = NULL;
4474 if (net == stcb->asoc.alternate) {
4475 sctp_free_remote_addr(stcb->asoc.alternate);
4476 stcb->asoc.alternate = NULL;
4478 sctp_free_remote_addr(net);
4482 * remove a remote endpoint address from an association, it will fail if the
4483 * address does not exist.
4486 sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
4489 * Here we need to remove a remote address. This is quite simple, we
4490 * first find it in the list of address for the association
4491 * (tasoc->asoc.nets) and then if it is there, we do a LIST_REMOVE
4492 * on that item. Note we do not allow it to be removed if there are
4493 * no other addresses.
4495 struct sctp_association *asoc;
4496 struct sctp_nets *net, *nnet;
4500 /* locate the address */
4501 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
4502 if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) {
4505 if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr,
4507 /* we found the guy */
4508 if (asoc->numnets < 2) {
4509 /* Must have at LEAST two remote addresses */
4512 sctp_remove_net(stcb, net);
4522 sctp_delete_from_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4524 struct sctpvtaghead *chain;
4525 struct sctp_tagblock *twait_block;
4529 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4530 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4531 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4532 if ((twait_block->vtag_block[i].v_tag == tag) &&
4533 (twait_block->vtag_block[i].lport == lport) &&
4534 (twait_block->vtag_block[i].rport == rport)) {
4535 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4536 twait_block->vtag_block[i].v_tag = 0;
4537 twait_block->vtag_block[i].lport = 0;
4538 twait_block->vtag_block[i].rport = 0;
4549 sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4551 struct sctpvtaghead *chain;
4552 struct sctp_tagblock *twait_block;
4556 SCTP_INP_INFO_WLOCK();
4557 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4558 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4559 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4560 if ((twait_block->vtag_block[i].v_tag == tag) &&
4561 (twait_block->vtag_block[i].lport == lport) &&
4562 (twait_block->vtag_block[i].rport == rport)) {
4570 SCTP_INP_INFO_WUNLOCK();
4576 sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport)
4578 struct sctpvtaghead *chain;
4579 struct sctp_tagblock *twait_block;
4587 (void)SCTP_GETTIME_TIMEVAL(&now);
4588 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4590 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4591 /* Block(s) present, lets find space, and expire on the fly */
4592 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4593 if ((twait_block->vtag_block[i].v_tag == 0) &&
4595 twait_block->vtag_block[i].tv_sec_at_expire =
4597 twait_block->vtag_block[i].v_tag = tag;
4598 twait_block->vtag_block[i].lport = lport;
4599 twait_block->vtag_block[i].rport = rport;
4601 } else if ((twait_block->vtag_block[i].v_tag) &&
4602 ((long)twait_block->vtag_block[i].tv_sec_at_expire < now.tv_sec)) {
4603 /* Audit expires this guy */
4604 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4605 twait_block->vtag_block[i].v_tag = 0;
4606 twait_block->vtag_block[i].lport = 0;
4607 twait_block->vtag_block[i].rport = 0;
4609 /* Reuse it for my new tag */
4610 twait_block->vtag_block[i].tv_sec_at_expire = now.tv_sec + time;
4611 twait_block->vtag_block[i].v_tag = tag;
4612 twait_block->vtag_block[i].lport = lport;
4613 twait_block->vtag_block[i].rport = rport;
4620 * We only do up to the block where we can place our
4626 /* Need to add a new block to chain */
4628 SCTP_MALLOC(twait_block, struct sctp_tagblock *,
4629 sizeof(struct sctp_tagblock), SCTP_M_TIMW);
4630 if (twait_block == NULL) {
4632 panic("Can not alloc tagblock");
4636 memset(twait_block, 0, sizeof(struct sctp_tagblock));
4637 LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock);
4638 twait_block->vtag_block[0].tv_sec_at_expire = now.tv_sec + time;
4639 twait_block->vtag_block[0].v_tag = tag;
4640 twait_block->vtag_block[0].lport = lport;
4641 twait_block->vtag_block[0].rport = rport;
4646 sctp_clean_up_stream(struct sctp_tcb *stcb, struct sctp_readhead *rh)
4648 struct sctp_tmit_chunk *chk, *nchk;
4649 struct sctp_queued_to_read *control, *ncontrol;
4651 TAILQ_FOREACH_SAFE(control, rh, next_instrm, ncontrol) {
4652 TAILQ_REMOVE(rh, control, next_instrm);
4653 control->on_strm_q = 0;
4654 if (control->on_read_q == 0) {
4655 sctp_free_remote_addr(control->whoFrom);
4656 if (control->data) {
4657 sctp_m_freem(control->data);
4658 control->data = NULL;
4661 /* Reassembly free? */
4662 TAILQ_FOREACH_SAFE(chk, &control->reasm, sctp_next, nchk) {
4663 TAILQ_REMOVE(&control->reasm, chk, sctp_next);
4665 sctp_m_freem(chk->data);
4668 if (chk->holds_key_ref)
4669 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4670 sctp_free_remote_addr(chk->whoTo);
4671 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4672 SCTP_DECR_CHK_COUNT();
4673 /* sa_ignore FREED_MEMORY */
4676 * We don't free the address here since all the net's were
4679 if (control->on_read_q == 0) {
4680 sctp_free_a_readq(stcb, control);
4687 * Free the association after un-hashing the remote port. This
4688 * function ALWAYS returns holding NO LOCK on the stcb. It DOES
4689 * expect that the input to this function IS a locked TCB.
4690 * It will return 0, if it did NOT destroy the association (instead
4691 * it unlocks it. It will return NON-zero if it either destroyed the
4692 * association OR the association is already destroyed.
4695 sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
4698 struct sctp_association *asoc;
4699 struct sctp_nets *net, *nnet;
4700 struct sctp_laddr *laddr, *naddr;
4701 struct sctp_tmit_chunk *chk, *nchk;
4702 struct sctp_asconf_addr *aparam, *naparam;
4703 struct sctp_asconf_ack *aack, *naack;
4704 struct sctp_stream_reset_list *strrst, *nstrrst;
4705 struct sctp_queued_to_read *sq, *nsq;
4706 struct sctp_stream_queue_pending *sp, *nsp;
4707 sctp_sharedkey_t *shared_key, *nshared_key;
4710 /* first, lets purge the entry from the hash table. */
4712 #ifdef SCTP_LOG_CLOSING
4713 sctp_log_closing(inp, stcb, 6);
4715 if (stcb->asoc.state == 0) {
4716 #ifdef SCTP_LOG_CLOSING
4717 sctp_log_closing(inp, NULL, 7);
4719 /* there is no asoc, really TSNH :-0 */
4722 if (stcb->asoc.alternate) {
4723 sctp_free_remote_addr(stcb->asoc.alternate);
4724 stcb->asoc.alternate = NULL;
4727 if (stcb->freed_from_where == 0) {
4728 /* Only record the first place free happened from */
4729 stcb->freed_from_where = from_location;
4734 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4735 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4736 /* nothing around */
4739 so = inp->sctp_socket;
4742 * We used timer based freeing if a reader or writer is in the way.
4743 * So we first check if we are actually being called from a timer,
4744 * if so we abort early if a reader or writer is still in the way.
4746 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
4747 (from_inpcbfree == SCTP_NORMAL_PROC)) {
4749 * is it the timer driving us? if so are the reader/writers
4752 if (stcb->asoc.refcnt) {
4753 /* nope, reader or writer in the way */
4754 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4755 /* no asoc destroyed */
4756 SCTP_TCB_UNLOCK(stcb);
4757 #ifdef SCTP_LOG_CLOSING
4758 sctp_log_closing(inp, stcb, 8);
4763 /* now clean up any other timers */
4764 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4765 asoc->dack_timer.self = NULL;
4766 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4768 * For stream reset we don't blast this unless
4769 * it is a str-reset timer, it might be the
4770 * free-asoc timer which we DON'T want to
4773 if (asoc->strreset_timer.type == SCTP_TIMER_TYPE_STRRESET)
4774 asoc->strreset_timer.self = NULL;
4775 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4776 asoc->asconf_timer.self = NULL;
4777 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4778 asoc->autoclose_timer.self = NULL;
4779 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4780 asoc->shut_guard_timer.self = NULL;
4781 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4782 asoc->delayed_event_timer.self = NULL;
4783 /* Mobility adaptation */
4784 (void)SCTP_OS_TIMER_STOP(&asoc->delete_prim_timer.timer);
4785 asoc->delete_prim_timer.self = NULL;
4786 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4787 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4788 net->rxt_timer.self = NULL;
4789 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4790 net->pmtu_timer.self = NULL;
4791 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4792 net->hb_timer.self = NULL;
4794 /* Now the read queue needs to be cleaned up (only once) */
4795 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) {
4796 stcb->asoc.state |= SCTP_STATE_ABOUT_TO_BE_FREED;
4797 SCTP_INP_READ_LOCK(inp);
4798 TAILQ_FOREACH(sq, &inp->read_queue, next) {
4799 if (sq->stcb == stcb) {
4800 sq->do_not_ref_stcb = 1;
4801 sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
4803 * If there is no end, there never will be
4806 if (sq->end_added == 0) {
4807 /* Held for PD-API clear that. */
4808 sq->pdapi_aborted = 1;
4809 sq->held_length = 0;
4810 if (sctp_stcb_is_feature_on(inp, stcb, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) {
4812 * Need to add a PD-API
4813 * aborted indication.
4814 * Setting the control_pdapi
4815 * assures that it will be
4816 * added right after this
4821 stcb->asoc.control_pdapi = sq;
4822 strseq = (sq->sinfo_stream << 16) | (sq->mid & 0x0000ffff);
4823 sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION,
4825 SCTP_PARTIAL_DELIVERY_ABORTED,
4828 stcb->asoc.control_pdapi = NULL;
4831 /* Add an end to wake them */
4835 SCTP_INP_READ_UNLOCK(inp);
4836 if (stcb->block_entry) {
4837 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET);
4838 stcb->block_entry->error = ECONNRESET;
4839 stcb->block_entry = NULL;
4842 if ((stcb->asoc.refcnt) || (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE)) {
4844 * Someone holds a reference OR the socket is unaccepted
4847 if ((stcb->asoc.refcnt) ||
4848 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4849 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4850 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4851 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4853 SCTP_TCB_UNLOCK(stcb);
4854 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4855 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4856 /* nothing around */
4859 /* Wake any reader/writers */
4860 sctp_sorwakeup(inp, so);
4861 sctp_sowwakeup(inp, so);
4863 #ifdef SCTP_LOG_CLOSING
4864 sctp_log_closing(inp, stcb, 9);
4866 /* no asoc destroyed */
4869 #ifdef SCTP_LOG_CLOSING
4870 sctp_log_closing(inp, stcb, 10);
4873 * When I reach here, no others want to kill the assoc yet.. and I
4874 * own the lock. Now its possible an abort comes in when I do the
4875 * lock exchange below to grab all the locks to do the final take
4876 * out. to prevent this we increment the count, which will start a
4877 * timer and blow out above thus assuring us that we hold exclusive
4878 * killing of the asoc. Note that after getting back the TCB lock we
4879 * will go ahead and increment the counter back up and stop any
4880 * timer a passing stranger may have started :-S
4882 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4883 atomic_add_int(&stcb->asoc.refcnt, 1);
4885 SCTP_TCB_UNLOCK(stcb);
4886 SCTP_INP_INFO_WLOCK();
4887 SCTP_INP_WLOCK(inp);
4888 SCTP_TCB_LOCK(stcb);
4890 /* Double check the GONE flag */
4891 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4892 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4893 /* nothing around */
4896 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
4897 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4899 * For TCP type we need special handling when we are
4900 * connected. We also include the peel'ed off ones to.
4902 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4903 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED;
4904 inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED;
4906 SOCKBUF_LOCK(&so->so_rcv);
4907 if (so->so_rcv.sb_cc == 0) {
4908 so->so_state &= ~(SS_ISCONNECTING |
4909 SS_ISDISCONNECTING |
4913 socantrcvmore_locked(so);
4915 sctp_sowwakeup(inp, so);
4916 sctp_sorwakeup(inp, so);
4922 * Make it invalid too, that way if its about to run it will abort
4925 /* re-increment the lock */
4926 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4927 atomic_add_int(&stcb->asoc.refcnt, -1);
4929 if (stcb->asoc.refcnt) {
4930 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4931 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4932 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4933 SCTP_INP_INFO_WUNLOCK();
4934 SCTP_INP_WUNLOCK(inp);
4936 SCTP_TCB_UNLOCK(stcb);
4940 if (inp->sctp_tcbhash) {
4941 LIST_REMOVE(stcb, sctp_tcbhash);
4943 if (stcb->asoc.in_asocid_hash) {
4944 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4946 /* Now lets remove it from the list of ALL associations in the EP */
4947 LIST_REMOVE(stcb, sctp_tcblist);
4948 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4949 SCTP_INP_INCR_REF(inp);
4950 SCTP_INP_WUNLOCK(inp);
4952 /* pull from vtag hash */
4953 LIST_REMOVE(stcb, sctp_asocs);
4954 sctp_add_vtag_to_timewait(asoc->my_vtag, SCTP_BASE_SYSCTL(sctp_vtag_time_wait),
4955 inp->sctp_lport, stcb->rport);
4958 * Now restop the timers to be sure this is paranoia at is finest!
4960 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4961 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4962 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4963 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4964 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4965 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4966 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4967 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4968 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4969 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4970 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4973 asoc->strreset_timer.type = SCTP_TIMER_TYPE_NONE;
4975 * The chunk lists and such SHOULD be empty but we check them just
4978 /* anything on the wheel needs to be removed */
4979 for (i = 0; i < asoc->streamoutcnt; i++) {
4980 struct sctp_stream_out *outs;
4982 outs = &asoc->strmout[i];
4983 /* now clean up any chunks here */
4984 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
4985 atomic_subtract_int(&asoc->stream_queue_cnt, 1);
4986 TAILQ_REMOVE(&outs->outqueue, sp, next);
4987 stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, outs, sp, 0);
4988 sctp_free_spbufspace(stcb, asoc, sp);
4991 /* Still an open socket - report */
4992 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
4993 0, (void *)sp, SCTP_SO_LOCKED);
4996 sctp_m_freem(sp->data);
4998 sp->tail_mbuf = NULL;
5003 sctp_free_remote_addr(sp->net);
5006 sctp_free_a_strmoq(stcb, sp, SCTP_SO_LOCKED);
5009 /* sa_ignore FREED_MEMORY */
5010 TAILQ_FOREACH_SAFE(strrst, &asoc->resetHead, next_resp, nstrrst) {
5011 TAILQ_REMOVE(&asoc->resetHead, strrst, next_resp);
5012 SCTP_FREE(strrst, SCTP_M_STRESET);
5014 TAILQ_FOREACH_SAFE(sq, &asoc->pending_reply_queue, next, nsq) {
5015 TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
5017 sctp_m_freem(sq->data);
5020 sctp_free_remote_addr(sq->whoFrom);
5023 /* Free the ctl entry */
5024 sctp_free_a_readq(stcb, sq);
5025 /* sa_ignore FREED_MEMORY */
5027 TAILQ_FOREACH_SAFE(chk, &asoc->free_chunks, sctp_next, nchk) {
5028 TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next);
5030 sctp_m_freem(chk->data);
5033 if (chk->holds_key_ref)
5034 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5035 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5036 SCTP_DECR_CHK_COUNT();
5037 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1);
5038 asoc->free_chunk_cnt--;
5039 /* sa_ignore FREED_MEMORY */
5041 /* pending send queue SHOULD be empty */
5042 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
5043 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
5044 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
5047 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
5050 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
5053 /* Still a socket? */
5054 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
5055 0, chk, SCTP_SO_LOCKED);
5058 sctp_m_freem(chk->data);
5062 if (chk->holds_key_ref)
5063 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5065 sctp_free_remote_addr(chk->whoTo);
5068 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5069 SCTP_DECR_CHK_COUNT();
5070 /* sa_ignore FREED_MEMORY */
5072 /* sent queue SHOULD be empty */
5073 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
5074 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
5075 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
5076 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
5079 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
5083 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
5086 /* Still a socket? */
5087 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
5088 0, chk, SCTP_SO_LOCKED);
5091 sctp_m_freem(chk->data);
5095 if (chk->holds_key_ref)
5096 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5097 sctp_free_remote_addr(chk->whoTo);
5098 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5099 SCTP_DECR_CHK_COUNT();
5100 /* sa_ignore FREED_MEMORY */
5103 for (i = 0; i < stcb->asoc.streamoutcnt; i++) {
5104 if (stcb->asoc.strmout[i].chunks_on_queues > 0) {
5105 panic("%u chunks left for stream %u.", stcb->asoc.strmout[i].chunks_on_queues, i);
5109 /* control queue MAY not be empty */
5110 TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) {
5111 TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next);
5113 sctp_m_freem(chk->data);
5116 if (chk->holds_key_ref)
5117 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5118 sctp_free_remote_addr(chk->whoTo);
5119 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5120 SCTP_DECR_CHK_COUNT();
5121 /* sa_ignore FREED_MEMORY */
5123 /* ASCONF queue MAY not be empty */
5124 TAILQ_FOREACH_SAFE(chk, &asoc->asconf_send_queue, sctp_next, nchk) {
5125 TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next);
5127 sctp_m_freem(chk->data);
5130 if (chk->holds_key_ref)
5131 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5132 sctp_free_remote_addr(chk->whoTo);
5133 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5134 SCTP_DECR_CHK_COUNT();
5135 /* sa_ignore FREED_MEMORY */
5137 if (asoc->mapping_array) {
5138 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
5139 asoc->mapping_array = NULL;
5141 if (asoc->nr_mapping_array) {
5142 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
5143 asoc->nr_mapping_array = NULL;
5145 /* the stream outs */
5146 if (asoc->strmout) {
5147 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
5148 asoc->strmout = NULL;
5150 asoc->strm_realoutsize = asoc->streamoutcnt = 0;
5152 for (i = 0; i < asoc->streamincnt; i++) {
5153 sctp_clean_up_stream(stcb, &asoc->strmin[i].inqueue);
5154 sctp_clean_up_stream(stcb, &asoc->strmin[i].uno_inqueue);
5156 SCTP_FREE(asoc->strmin, SCTP_M_STRMI);
5157 asoc->strmin = NULL;
5159 asoc->streamincnt = 0;
5160 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
5162 if (SCTP_BASE_INFO(ipi_count_raddr) == 0) {
5163 panic("no net's left alloc'ed, or list points to itself");
5166 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
5167 sctp_free_remote_addr(net);
5169 LIST_FOREACH_SAFE(laddr, &asoc->sctp_restricted_addrs, sctp_nxt_addr, naddr) {
5170 /* sa_ignore FREED_MEMORY */
5171 sctp_remove_laddr(laddr);
5174 /* pending asconf (address) parameters */
5175 TAILQ_FOREACH_SAFE(aparam, &asoc->asconf_queue, next, naparam) {
5176 /* sa_ignore FREED_MEMORY */
5177 TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
5178 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
5180 TAILQ_FOREACH_SAFE(aack, &asoc->asconf_ack_sent, next, naack) {
5181 /* sa_ignore FREED_MEMORY */
5182 TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
5183 if (aack->data != NULL) {
5184 sctp_m_freem(aack->data);
5186 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
5188 /* clean up auth stuff */
5189 if (asoc->local_hmacs)
5190 sctp_free_hmaclist(asoc->local_hmacs);
5191 if (asoc->peer_hmacs)
5192 sctp_free_hmaclist(asoc->peer_hmacs);
5194 if (asoc->local_auth_chunks)
5195 sctp_free_chunklist(asoc->local_auth_chunks);
5196 if (asoc->peer_auth_chunks)
5197 sctp_free_chunklist(asoc->peer_auth_chunks);
5199 sctp_free_authinfo(&asoc->authinfo);
5201 LIST_FOREACH_SAFE(shared_key, &asoc->shared_keys, next, nshared_key) {
5202 LIST_REMOVE(shared_key, next);
5203 sctp_free_sharedkey(shared_key);
5204 /* sa_ignore FREED_MEMORY */
5207 /* Insert new items here :> */
5209 /* Get rid of LOCK */
5210 SCTP_TCB_UNLOCK(stcb);
5211 SCTP_TCB_LOCK_DESTROY(stcb);
5212 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
5213 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5214 SCTP_INP_INFO_WUNLOCK();
5215 SCTP_INP_RLOCK(inp);
5217 #ifdef SCTP_TRACK_FREED_ASOCS
5218 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5219 /* now clean up the tasoc itself */
5220 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5221 SCTP_DECR_ASOC_COUNT();
5223 LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist);
5226 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5227 SCTP_DECR_ASOC_COUNT();
5229 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5230 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5232 * If its NOT the inp_free calling us AND sctp_close
5233 * as been called, we call back...
5235 SCTP_INP_RUNLOCK(inp);
5237 * This will start the kill timer (if we are the
5238 * last one) since we hold an increment yet. But
5239 * this is the only safe way to do this since
5240 * otherwise if the socket closes at the same time
5241 * we are here we might collide in the cleanup.
5243 sctp_inpcb_free(inp,
5244 SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
5245 SCTP_CALLED_DIRECTLY_NOCMPSET);
5246 SCTP_INP_DECR_REF(inp);
5249 /* The socket is still open. */
5250 SCTP_INP_DECR_REF(inp);
5253 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5254 SCTP_INP_RUNLOCK(inp);
5257 /* destroyed the asoc */
5258 #ifdef SCTP_LOG_CLOSING
5259 sctp_log_closing(inp, NULL, 11);
5267 * determine if a destination is "reachable" based upon the addresses bound
5268 * to the current endpoint (e.g. only v4 or v6 currently bound)
5271 * FIX: if we allow assoc-level bindx(), then this needs to be fixed to use
5272 * assoc level v4/v6 flags, as the assoc *may* not have the same address
5273 * types bound as its endpoint
5276 sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
5278 struct sctp_inpcb *inp;
5282 * No locks here, the TCB, in all cases is already locked and an
5283 * assoc is up. There is either a INP lock by the caller applied (in
5284 * asconf case when deleting an address) or NOT in the HB case,
5285 * however if HB then the INP increment is up and the INP will not
5286 * be removed (on top of the fact that we have a TCB lock). So we
5287 * only want to read the sctp_flags, which is either bound-all or
5288 * not.. no protection needed since once an assoc is up you can't be
5289 * changing your binding.
5291 inp = stcb->sctp_ep;
5292 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5293 /* if bound all, destination is not restricted */
5295 * RRS: Question during lock work: Is this correct? If you
5296 * are bound-all you still might need to obey the V4--V6
5297 * flags??? IMO this bound-all stuff needs to be removed!
5301 /* NOTE: all "scope" checks are done when local addresses are added */
5302 switch (destaddr->sa_family) {
5305 answer = inp->ip_inp.inp.inp_vflag & INP_IPV6;
5310 answer = inp->ip_inp.inp.inp_vflag & INP_IPV4;
5314 /* invalid family, so it's unreachable */
5322 * update the inp_vflags on an endpoint
5325 sctp_update_ep_vflag(struct sctp_inpcb *inp)
5327 struct sctp_laddr *laddr;
5329 /* first clear the flag */
5330 inp->ip_inp.inp.inp_vflag = 0;
5331 /* set the flag based on addresses on the ep list */
5332 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5333 if (laddr->ifa == NULL) {
5334 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
5338 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
5341 switch (laddr->ifa->address.sa.sa_family) {
5344 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5349 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5359 * Add the address to the endpoint local address list There is nothing to be
5360 * done if we are bound to all addresses
5363 sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
5365 struct sctp_laddr *laddr;
5366 struct sctp_tcb *stcb;
5371 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5372 /* You are already bound to all. You have it already */
5376 if (ifa->address.sa.sa_family == AF_INET6) {
5377 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5378 /* Can't bind a non-useable addr. */
5383 /* first, is it already present? */
5384 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5385 if (laddr->ifa == ifa) {
5392 /* Not in the ep list */
5393 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action);
5397 /* update inp_vflag flags */
5398 switch (ifa->address.sa.sa_family) {
5401 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5406 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5412 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5413 sctp_add_local_addr_restricted(stcb, ifa);
5421 * select a new (hopefully reachable) destination net (should only be used
5422 * when we deleted an ep addr that is the only usable source address to reach
5423 * the destination net)
5426 sctp_select_primary_destination(struct sctp_tcb *stcb)
5428 struct sctp_nets *net;
5430 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5431 /* for now, we'll just pick the first reachable one we find */
5432 if (net->dest_state & SCTP_ADDR_UNCONFIRMED)
5434 if (sctp_destination_is_reachable(stcb,
5435 (struct sockaddr *)&net->ro._l_addr)) {
5436 /* found a reachable destination */
5437 stcb->asoc.primary_destination = net;
5440 /* I can't there from here! ...we're gonna die shortly... */
5445 * Delete the address from the endpoint local address list. There is nothing
5446 * to be done if we are bound to all addresses
5449 sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa)
5451 struct sctp_laddr *laddr;
5455 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5456 /* You are already bound to all. You have it already */
5459 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5460 if (laddr->ifa == ifa) {
5465 if (fnd && (inp->laddr_count < 2)) {
5466 /* can't delete unless there are at LEAST 2 addresses */
5471 * clean up any use of this address go through our
5472 * associations and clear any last_used_address that match
5473 * this one for each assoc, see if a new primary_destination
5476 struct sctp_tcb *stcb;
5478 /* clean up "next_addr_touse" */
5479 if (inp->next_addr_touse == laddr)
5480 /* delete this address */
5481 inp->next_addr_touse = NULL;
5483 /* clean up "last_used_address" */
5484 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5485 struct sctp_nets *net;
5487 SCTP_TCB_LOCK(stcb);
5488 if (stcb->asoc.last_used_address == laddr)
5489 /* delete this address */
5490 stcb->asoc.last_used_address = NULL;
5492 * Now spin through all the nets and purge any ref
5495 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5496 if (net->ro._s_addr == laddr->ifa) {
5497 /* Yep, purge src address selected */
5500 /* delete this address if cached */
5504 net->ro.ro_rt = NULL;
5506 sctp_free_ifa(net->ro._s_addr);
5507 net->ro._s_addr = NULL;
5508 net->src_addr_selected = 0;
5511 SCTP_TCB_UNLOCK(stcb);
5512 } /* for each tcb */
5513 /* remove it from the ep list */
5514 sctp_remove_laddr(laddr);
5516 /* update inp_vflag flags */
5517 sctp_update_ep_vflag(inp);
5523 * Add the address to the TCB local address restricted list.
5524 * This is a "pending" address list (eg. addresses waiting for an
5525 * ASCONF-ACK response) and cannot be used as a valid source address.
5528 sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5530 struct sctp_laddr *laddr;
5531 struct sctpladdr *list;
5534 * Assumes TCB is locked.. and possibly the INP. May need to
5535 * confirm/fix that if we need it and is not the case.
5537 list = &stcb->asoc.sctp_restricted_addrs;
5540 if (ifa->address.sa.sa_family == AF_INET6) {
5541 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5542 /* Can't bind a non-existent addr. */
5547 /* does the address already exist? */
5548 LIST_FOREACH(laddr, list, sctp_nxt_addr) {
5549 if (laddr->ifa == ifa) {
5554 /* add to the list */
5555 (void)sctp_insert_laddr(list, ifa, 0);
5560 * Remove a local address from the TCB local address restricted list
5563 sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5565 struct sctp_inpcb *inp;
5566 struct sctp_laddr *laddr;
5569 * This is called by asconf work. It is assumed that a) The TCB is
5570 * locked and b) The INP is locked. This is true in as much as I can
5571 * trace through the entry asconf code where I did these locks.
5572 * Again, the ASCONF code is a bit different in that it does lock
5573 * the INP during its work often times. This must be since we don't
5574 * want other proc's looking up things while what they are looking
5575 * up is changing :-D
5578 inp = stcb->sctp_ep;
5579 /* if subset bound and don't allow ASCONF's, can't delete last */
5580 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
5581 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
5582 if (stcb->sctp_ep->laddr_count < 2) {
5583 /* can't delete last address */
5587 LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
5588 /* remove the address if it exists */
5589 if (laddr->ifa == NULL)
5591 if (laddr->ifa == ifa) {
5592 sctp_remove_laddr(laddr);
5597 /* address not found! */
5602 * Temporarily remove for __APPLE__ until we use the Tiger equivalents
5605 static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;
5606 static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR;
5610 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5611 struct sctp_mcore_ctrl *sctp_mcore_workers = NULL;
5612 int *sctp_cpuarry = NULL;
5614 sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use)
5616 /* Queue a packet to a processor for the specified core */
5617 struct sctp_mcore_queue *qent;
5618 struct sctp_mcore_ctrl *wkq;
5621 if (sctp_mcore_workers == NULL) {
5622 /* Something went way bad during setup */
5623 sctp_input_with_port(m, off, 0);
5626 SCTP_MALLOC(qent, struct sctp_mcore_queue *,
5627 (sizeof(struct sctp_mcore_queue)),
5630 /* This is trouble */
5631 sctp_input_with_port(m, off, 0);
5638 wkq = &sctp_mcore_workers[cpu_to_use];
5639 SCTP_MCORE_QLOCK(wkq);
5641 TAILQ_INSERT_TAIL(&wkq->que, qent, next);
5642 if (wkq->running == 0) {
5645 SCTP_MCORE_QUNLOCK(wkq);
5647 wakeup(&wkq->running);
5652 sctp_mcore_thread(void *arg)
5655 struct sctp_mcore_ctrl *wkq;
5656 struct sctp_mcore_queue *qent;
5658 wkq = (struct sctp_mcore_ctrl *)arg;
5662 /* Wait for first tickle */
5663 SCTP_MCORE_LOCK(wkq);
5665 msleep(&wkq->running,
5667 0, "wait for pkt", 0);
5668 SCTP_MCORE_UNLOCK(wkq);
5670 /* Bind to our cpu */
5671 thread_lock(curthread);
5672 sched_bind(curthread, wkq->cpuid);
5673 thread_unlock(curthread);
5675 /* Now lets start working */
5676 SCTP_MCORE_LOCK(wkq);
5677 /* Now grab lock and go */
5679 SCTP_MCORE_QLOCK(wkq);
5682 qent = TAILQ_FIRST(&wkq->que);
5684 TAILQ_REMOVE(&wkq->que, qent, next);
5685 SCTP_MCORE_QUNLOCK(wkq);
5686 CURVNET_SET(qent->vn);
5690 SCTP_FREE(qent, SCTP_M_MCORE);
5692 sctp_input_with_port(m, off, 0);
5694 SCTP_PRINTF("V6 not yet supported\n");
5698 SCTP_MCORE_QLOCK(wkq);
5701 if (!TAILQ_EMPTY(&wkq->que)) {
5704 SCTP_MCORE_QUNLOCK(wkq);
5705 msleep(&wkq->running,
5707 0, "wait for pkt", 0);
5712 sctp_startup_mcore_threads(void)
5719 if (sctp_mcore_workers != NULL) {
5721 * Already been here in some previous vnet?
5725 SCTP_MALLOC(sctp_mcore_workers, struct sctp_mcore_ctrl *,
5726 ((mp_maxid + 1) * sizeof(struct sctp_mcore_ctrl)),
5728 if (sctp_mcore_workers == NULL) {
5732 memset(sctp_mcore_workers, 0, ((mp_maxid + 1) *
5733 sizeof(struct sctp_mcore_ctrl)));
5734 /* Init the structures */
5735 for (i = 0; i <= mp_maxid; i++) {
5736 TAILQ_INIT(&sctp_mcore_workers[i].que);
5737 SCTP_MCORE_LOCK_INIT(&sctp_mcore_workers[i]);
5738 SCTP_MCORE_QLOCK_INIT(&sctp_mcore_workers[i]);
5739 sctp_mcore_workers[i].cpuid = i;
5741 if (sctp_cpuarry == NULL) {
5742 SCTP_MALLOC(sctp_cpuarry, int *,
5743 (mp_ncpus * sizeof(int)),
5747 sctp_cpuarry[i] = cpu;
5751 /* Now start them all */
5753 (void)kproc_create(sctp_mcore_thread,
5754 (void *)&sctp_mcore_workers[cpu],
5755 &sctp_mcore_workers[cpu].thread_proc,
5768 * SCTP initialization for the PCB structures should be called by
5769 * the sctp_init() function.
5774 if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) {
5775 /* error I was called twice */
5778 SCTP_BASE_VAR(sctp_pcb_initialized) = 1;
5780 #if defined(SCTP_LOCAL_TRACE_BUF)
5781 memset(&SCTP_BASE_SYSCTL(sctp_log), 0, sizeof(struct sctp_log));
5783 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5784 SCTP_MALLOC(SCTP_BASE_STATS, struct sctpstat *,
5785 ((mp_maxid + 1) * sizeof(struct sctpstat)),
5788 (void)SCTP_GETTIME_TIMEVAL(&tv);
5789 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5790 memset(SCTP_BASE_STATS, 0, sizeof(struct sctpstat) * (mp_maxid + 1));
5791 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t)tv.tv_sec;
5792 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t)tv.tv_usec;
5794 memset(&SCTP_BASE_STATS, 0, sizeof(struct sctpstat));
5795 SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t)tv.tv_sec;
5796 SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t)tv.tv_usec;
5798 /* init the empty list of (All) Endpoints */
5799 LIST_INIT(&SCTP_BASE_INFO(listhead));
5802 /* init the hash table of endpoints */
5803 TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize));
5804 TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize));
5805 TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale));
5806 SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31),
5807 &SCTP_BASE_INFO(hashasocmark));
5808 SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5809 &SCTP_BASE_INFO(hashmark));
5810 SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5811 &SCTP_BASE_INFO(hashtcpmark));
5812 SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize);
5815 SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH,
5816 &SCTP_BASE_INFO(hashvrfmark));
5818 SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE,
5819 &SCTP_BASE_INFO(vrf_ifn_hashmark));
5820 /* init the zones */
5822 * FIX ME: Should check for NULL returns, but if it does fail we are
5823 * doomed to panic anyways... add later maybe.
5825 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep",
5826 sizeof(struct sctp_inpcb), maxsockets);
5828 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc",
5829 sizeof(struct sctp_tcb), sctp_max_number_of_assoc);
5831 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr",
5832 sizeof(struct sctp_laddr),
5833 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5835 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr",
5836 sizeof(struct sctp_nets),
5837 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5839 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk",
5840 sizeof(struct sctp_tmit_chunk),
5841 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5843 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq",
5844 sizeof(struct sctp_queued_to_read),
5845 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5847 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out",
5848 sizeof(struct sctp_stream_queue_pending),
5849 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5851 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf",
5852 sizeof(struct sctp_asconf),
5853 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5855 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack",
5856 sizeof(struct sctp_asconf_ack),
5857 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5860 /* Master Lock INIT for info structure */
5861 SCTP_INP_INFO_LOCK_INIT();
5862 SCTP_STATLOG_INIT_LOCK();
5864 SCTP_IPI_COUNT_INIT();
5865 SCTP_IPI_ADDR_INIT();
5866 #ifdef SCTP_PACKET_LOGGING
5867 SCTP_IP_PKTLOG_INIT();
5869 LIST_INIT(&SCTP_BASE_INFO(addr_wq));
5871 SCTP_WQ_ADDR_INIT();
5872 /* not sure if we need all the counts */
5873 SCTP_BASE_INFO(ipi_count_ep) = 0;
5874 /* assoc/tcb zone info */
5875 SCTP_BASE_INFO(ipi_count_asoc) = 0;
5876 /* local addrlist zone info */
5877 SCTP_BASE_INFO(ipi_count_laddr) = 0;
5878 /* remote addrlist zone info */
5879 SCTP_BASE_INFO(ipi_count_raddr) = 0;
5881 SCTP_BASE_INFO(ipi_count_chunk) = 0;
5883 /* socket queue zone info */
5884 SCTP_BASE_INFO(ipi_count_readq) = 0;
5886 /* stream out queue cont */
5887 SCTP_BASE_INFO(ipi_count_strmoq) = 0;
5889 SCTP_BASE_INFO(ipi_free_strmoq) = 0;
5890 SCTP_BASE_INFO(ipi_free_chunks) = 0;
5892 SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer));
5894 /* Init the TIMEWAIT list */
5895 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5896 LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]);
5898 sctp_startup_iterator();
5900 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5901 sctp_startup_mcore_threads();
5905 * INIT the default VRF which for BSD is the only one, other O/S's
5906 * may have more. But initially they must start with one and then
5907 * add the VRF's as addresses are added.
5909 sctp_init_vrf_list(SCTP_DEFAULT_VRF);
5913 * Assumes that the SCTP_BASE_INFO() lock is NOT held.
5916 sctp_pcb_finish(void)
5918 struct sctp_vrflist *vrf_bucket;
5919 struct sctp_vrf *vrf, *nvrf;
5920 struct sctp_ifn *ifn, *nifn;
5921 struct sctp_ifa *ifa, *nifa;
5922 struct sctpvtaghead *chain;
5923 struct sctp_tagblock *twait_block, *prev_twait_block;
5924 struct sctp_laddr *wi, *nwi;
5926 struct sctp_iterator *it, *nit;
5928 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
5929 SCTP_PRINTF("%s: race condition on teardown.\n", __func__);
5932 SCTP_BASE_VAR(sctp_pcb_initialized) = 0;
5934 * In FreeBSD the iterator thread never exits but we do clean up.
5935 * The only way FreeBSD reaches here is if we have VRF's but we
5936 * still add the ifdef to make it compile on old versions.
5939 SCTP_IPI_ITERATOR_WQ_LOCK();
5941 * sctp_iterator_worker() might be working on an it entry without
5942 * holding the lock. We won't find it on the list either and
5943 * continue and free/destroy it. While holding the lock, spin, to
5944 * avoid the race condition as sctp_iterator_worker() will have to
5945 * wait to re-aquire the lock.
5947 if (sctp_it_ctl.iterator_running != 0 || sctp_it_ctl.cur_it != NULL) {
5948 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5949 SCTP_PRINTF("%s: Iterator running while we held the lock. Retry. "
5950 "cur_it=%p\n", __func__, sctp_it_ctl.cur_it);
5954 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
5955 if (it->vn != curvnet) {
5958 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
5959 if (it->function_atend != NULL) {
5960 (*it->function_atend) (it->pointer, it->val);
5962 SCTP_FREE(it, SCTP_M_ITER);
5964 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5965 SCTP_ITERATOR_LOCK();
5966 if ((sctp_it_ctl.cur_it) &&
5967 (sctp_it_ctl.cur_it->vn == curvnet)) {
5968 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
5970 SCTP_ITERATOR_UNLOCK();
5971 SCTP_OS_TIMER_STOP_DRAIN(&SCTP_BASE_INFO(addr_wq_timer.timer));
5972 SCTP_WQ_ADDR_LOCK();
5973 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
5974 LIST_REMOVE(wi, sctp_nxt_addr);
5975 SCTP_DECR_LADDR_COUNT();
5976 if (wi->action == SCTP_DEL_IP_ADDRESS) {
5977 SCTP_FREE(wi->ifa, SCTP_M_IFA);
5979 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi);
5981 SCTP_WQ_ADDR_UNLOCK();
5984 * free the vrf/ifn/ifa lists and hashes (be sure address monitor is
5987 vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))];
5988 LIST_FOREACH_SAFE(vrf, vrf_bucket, next_vrf, nvrf) {
5989 LIST_FOREACH_SAFE(ifn, &vrf->ifnlist, next_ifn, nifn) {
5990 LIST_FOREACH_SAFE(ifa, &ifn->ifalist, next_ifa, nifa) {
5992 LIST_REMOVE(ifa, next_bucket);
5993 LIST_REMOVE(ifa, next_ifa);
5994 SCTP_FREE(ifa, SCTP_M_IFA);
5997 LIST_REMOVE(ifn, next_bucket);
5998 LIST_REMOVE(ifn, next_ifn);
5999 SCTP_FREE(ifn, SCTP_M_IFN);
6001 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
6003 LIST_REMOVE(vrf, next_vrf);
6004 SCTP_FREE(vrf, SCTP_M_VRF);
6006 /* free the vrf hashes */
6007 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark));
6008 SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark));
6011 * free the TIMEWAIT list elements malloc'd in the function
6012 * sctp_add_vtag_to_timewait()...
6014 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
6015 chain = &SCTP_BASE_INFO(vtag_timewait)[i];
6016 if (!LIST_EMPTY(chain)) {
6017 prev_twait_block = NULL;
6018 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6019 if (prev_twait_block) {
6020 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
6022 prev_twait_block = twait_block;
6024 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
6028 /* free the locks and mutexes */
6029 #ifdef SCTP_PACKET_LOGGING
6030 SCTP_IP_PKTLOG_DESTROY();
6032 SCTP_IPI_ADDR_DESTROY();
6033 SCTP_STATLOG_DESTROY();
6034 SCTP_INP_INFO_LOCK_DESTROY();
6036 SCTP_WQ_ADDR_DESTROY();
6038 /* Get rid of other stuff too. */
6039 if (SCTP_BASE_INFO(sctp_asochash) != NULL)
6040 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark));
6041 if (SCTP_BASE_INFO(sctp_ephash) != NULL)
6042 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark));
6043 if (SCTP_BASE_INFO(sctp_tcpephash) != NULL)
6044 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark));
6046 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep));
6047 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc));
6048 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr));
6049 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net));
6050 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk));
6051 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq));
6052 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq));
6053 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf));
6054 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack));
6055 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
6056 SCTP_FREE(SCTP_BASE_STATS, SCTP_M_MCORE);
6062 sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m,
6063 int offset, int limit,
6064 struct sockaddr *src, struct sockaddr *dst,
6065 struct sockaddr *altsa, uint16_t port)
6068 * grub through the INIT pulling addresses and loading them to the
6069 * nets structure in the asoc. The from address in the mbuf should
6070 * also be loaded (if it is not already). This routine can be called
6071 * with either INIT or INIT-ACK's as long as the m points to the IP
6072 * packet and the offset points to the beginning of the parameters.
6074 struct sctp_inpcb *inp;
6075 struct sctp_nets *net, *nnet, *net_tmp;
6076 struct sctp_paramhdr *phdr, param_buf;
6077 struct sctp_tcb *stcb_tmp;
6078 uint16_t ptype, plen;
6079 struct sockaddr *sa;
6080 uint8_t random_store[SCTP_PARAM_BUFFER_SIZE];
6081 struct sctp_auth_random *p_random = NULL;
6082 uint16_t random_len = 0;
6083 uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE];
6084 struct sctp_auth_hmac_algo *hmacs = NULL;
6085 uint16_t hmacs_len = 0;
6086 uint8_t saw_asconf = 0;
6087 uint8_t saw_asconf_ack = 0;
6088 uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE];
6089 struct sctp_auth_chunk_list *chunks = NULL;
6090 uint16_t num_chunks = 0;
6091 sctp_key_t *new_key;
6093 int got_random = 0, got_hmacs = 0, got_chklist = 0;
6094 uint8_t peer_supports_ecn;
6095 uint8_t peer_supports_prsctp;
6096 uint8_t peer_supports_auth;
6097 uint8_t peer_supports_asconf;
6098 uint8_t peer_supports_asconf_ack;
6099 uint8_t peer_supports_reconfig;
6100 uint8_t peer_supports_nrsack;
6101 uint8_t peer_supports_pktdrop;
6102 uint8_t peer_supports_idata;
6104 struct sockaddr_in sin;
6107 struct sockaddr_in6 sin6;
6110 /* First get the destination address setup too. */
6112 memset(&sin, 0, sizeof(sin));
6113 sin.sin_family = AF_INET;
6114 sin.sin_len = sizeof(sin);
6115 sin.sin_port = stcb->rport;
6118 memset(&sin6, 0, sizeof(sin6));
6119 sin6.sin6_family = AF_INET6;
6120 sin6.sin6_len = sizeof(struct sockaddr_in6);
6121 sin6.sin6_port = stcb->rport;
6128 peer_supports_idata = 0;
6129 peer_supports_ecn = 0;
6130 peer_supports_prsctp = 0;
6131 peer_supports_auth = 0;
6132 peer_supports_asconf = 0;
6133 peer_supports_reconfig = 0;
6134 peer_supports_nrsack = 0;
6135 peer_supports_pktdrop = 0;
6136 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
6137 /* mark all addresses that we have currently on the list */
6138 net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC;
6140 /* does the source address already exist? if so skip it */
6141 inp = stcb->sctp_ep;
6142 atomic_add_int(&stcb->asoc.refcnt, 1);
6143 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, dst, stcb);
6144 atomic_add_int(&stcb->asoc.refcnt, -1);
6146 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) {
6147 /* we must add the source address */
6148 /* no scope set here since we have a tcb already. */
6149 switch (sa->sa_family) {
6152 if (stcb->asoc.scope.ipv4_addr_legal) {
6153 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) {
6161 if (stcb->asoc.scope.ipv6_addr_legal) {
6162 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
6172 if (net_tmp != NULL && stcb_tmp == stcb) {
6173 net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC;
6174 } else if (stcb_tmp != stcb) {
6175 /* It belongs to another association? */
6177 SCTP_TCB_UNLOCK(stcb_tmp);
6181 if (stcb->asoc.state == 0) {
6182 /* the assoc was freed? */
6185 /* now we must go through each of the params. */
6186 phdr = sctp_get_next_param(m, offset, ¶m_buf, sizeof(param_buf));
6188 ptype = ntohs(phdr->param_type);
6189 plen = ntohs(phdr->param_length);
6191 * SCTP_PRINTF("ptype => %0x, plen => %d\n",
6192 * (uint32_t)ptype, (int)plen);
6194 if (offset + plen > limit) {
6201 if (ptype == SCTP_IPV4_ADDRESS) {
6202 if (stcb->asoc.scope.ipv4_addr_legal) {
6203 struct sctp_ipv4addr_param *p4, p4_buf;
6205 /* ok get the v4 address and check/add */
6206 phdr = sctp_get_next_param(m, offset,
6207 (struct sctp_paramhdr *)&p4_buf,
6209 if (plen != sizeof(struct sctp_ipv4addr_param) ||
6213 p4 = (struct sctp_ipv4addr_param *)phdr;
6214 sin.sin_addr.s_addr = p4->addr;
6215 if (IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) {
6216 /* Skip multi-cast addresses */
6219 if ((sin.sin_addr.s_addr == INADDR_BROADCAST) ||
6220 (sin.sin_addr.s_addr == INADDR_ANY)) {
6223 sa = (struct sockaddr *)&sin;
6224 inp = stcb->sctp_ep;
6225 atomic_add_int(&stcb->asoc.refcnt, 1);
6226 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6228 atomic_add_int(&stcb->asoc.refcnt, -1);
6230 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) ||
6232 /* we must add the source address */
6234 * no scope set since we have a tcb
6239 * we must validate the state again
6243 if (stcb->asoc.state == 0) {
6244 /* the assoc was freed? */
6247 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) {
6250 } else if (stcb_tmp == stcb) {
6251 if (stcb->asoc.state == 0) {
6252 /* the assoc was freed? */
6258 ~SCTP_ADDR_NOT_IN_ASSOC;
6262 * strange, address is in another
6263 * assoc? straighten out locks.
6266 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6267 struct mbuf *op_err;
6268 char msg[SCTP_DIAG_INFO_LEN];
6274 snprintf(msg, sizeof(msg),
6275 "%s:%d at %s", __FILE__, __LINE__, __func__);
6276 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
6278 sctp_abort_an_association(stcb_tmp->sctp_ep,
6280 SCTP_SO_NOT_LOCKED);
6283 SCTP_TCB_UNLOCK(stcb_tmp);
6285 if (stcb->asoc.state == 0) {
6286 /* the assoc was freed? */
6295 if (ptype == SCTP_IPV6_ADDRESS) {
6296 if (stcb->asoc.scope.ipv6_addr_legal) {
6297 /* ok get the v6 address and check/add */
6298 struct sctp_ipv6addr_param *p6, p6_buf;
6300 phdr = sctp_get_next_param(m, offset,
6301 (struct sctp_paramhdr *)&p6_buf,
6303 if (plen != sizeof(struct sctp_ipv6addr_param) ||
6307 p6 = (struct sctp_ipv6addr_param *)phdr;
6308 memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
6310 if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) {
6311 /* Skip multi-cast addresses */
6314 if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) {
6316 * Link local make no sense without
6321 sa = (struct sockaddr *)&sin6;
6322 inp = stcb->sctp_ep;
6323 atomic_add_int(&stcb->asoc.refcnt, 1);
6324 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6326 atomic_add_int(&stcb->asoc.refcnt, -1);
6327 if (stcb_tmp == NULL &&
6328 (inp == stcb->sctp_ep || inp == NULL)) {
6330 * we must validate the state again
6334 if (stcb->asoc.state == 0) {
6335 /* the assoc was freed? */
6339 * we must add the address, no scope
6342 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) {
6345 } else if (stcb_tmp == stcb) {
6347 * we must validate the state again
6350 if (stcb->asoc.state == 0) {
6351 /* the assoc was freed? */
6357 ~SCTP_ADDR_NOT_IN_ASSOC;
6361 * strange, address is in another
6362 * assoc? straighten out locks.
6365 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6366 struct mbuf *op_err;
6367 char msg[SCTP_DIAG_INFO_LEN];
6373 snprintf(msg, sizeof(msg),
6374 "%s:%d at %s", __FILE__, __LINE__, __func__);
6375 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
6377 sctp_abort_an_association(stcb_tmp->sctp_ep,
6379 SCTP_SO_NOT_LOCKED);
6382 SCTP_TCB_UNLOCK(stcb_tmp);
6384 if (stcb->asoc.state == 0) {
6385 /* the assoc was freed? */
6393 if (ptype == SCTP_ECN_CAPABLE) {
6394 peer_supports_ecn = 1;
6395 } else if (ptype == SCTP_ULP_ADAPTATION) {
6396 if (stcb->asoc.state != SCTP_STATE_OPEN) {
6397 struct sctp_adaptation_layer_indication ai,
6400 phdr = sctp_get_next_param(m, offset,
6401 (struct sctp_paramhdr *)&ai, sizeof(ai));
6402 aip = (struct sctp_adaptation_layer_indication *)phdr;
6404 stcb->asoc.peers_adaptation = ntohl(aip->indication);
6405 stcb->asoc.adaptation_needed = 1;
6408 } else if (ptype == SCTP_SET_PRIM_ADDR) {
6409 struct sctp_asconf_addr_param lstore, *fee;
6411 struct sockaddr *lsa = NULL;
6413 struct sctp_asconf_addrv4_param *fii;
6416 if (stcb->asoc.asconf_supported == 0) {
6419 if (plen > sizeof(lstore)) {
6422 phdr = sctp_get_next_param(m, offset,
6423 (struct sctp_paramhdr *)&lstore,
6428 fee = (struct sctp_asconf_addr_param *)phdr;
6429 lptype = ntohs(fee->addrp.ph.param_type);
6432 case SCTP_IPV4_ADDRESS:
6434 sizeof(struct sctp_asconf_addrv4_param)) {
6435 SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n",
6436 (int)sizeof(struct sctp_asconf_addrv4_param),
6439 fii = (struct sctp_asconf_addrv4_param *)fee;
6440 sin.sin_addr.s_addr = fii->addrp.addr;
6441 lsa = (struct sockaddr *)&sin;
6446 case SCTP_IPV6_ADDRESS:
6448 sizeof(struct sctp_asconf_addr_param)) {
6449 SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n",
6450 (int)sizeof(struct sctp_asconf_addr_param),
6453 memcpy(sin6.sin6_addr.s6_addr,
6455 sizeof(fee->addrp.addr));
6456 lsa = (struct sockaddr *)&sin6;
6464 (void)sctp_set_primary_addr(stcb, sa, NULL);
6466 } else if (ptype == SCTP_HAS_NAT_SUPPORT) {
6467 stcb->asoc.peer_supports_nat = 1;
6468 } else if (ptype == SCTP_PRSCTP_SUPPORTED) {
6469 /* Peer supports pr-sctp */
6470 peer_supports_prsctp = 1;
6471 } else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) {
6472 /* A supported extension chunk */
6473 struct sctp_supported_chunk_types_param *pr_supported;
6474 uint8_t local_store[SCTP_PARAM_BUFFER_SIZE];
6477 if (plen > sizeof(local_store)) {
6480 phdr = sctp_get_next_param(m, offset,
6481 (struct sctp_paramhdr *)&local_store, plen);
6485 pr_supported = (struct sctp_supported_chunk_types_param *)phdr;
6486 num_ent = plen - sizeof(struct sctp_paramhdr);
6487 for (i = 0; i < num_ent; i++) {
6488 switch (pr_supported->chunk_types[i]) {
6490 peer_supports_asconf = 1;
6492 case SCTP_ASCONF_ACK:
6493 peer_supports_asconf_ack = 1;
6495 case SCTP_FORWARD_CUM_TSN:
6496 peer_supports_prsctp = 1;
6498 case SCTP_PACKET_DROPPED:
6499 peer_supports_pktdrop = 1;
6501 case SCTP_NR_SELECTIVE_ACK:
6502 peer_supports_nrsack = 1;
6504 case SCTP_STREAM_RESET:
6505 peer_supports_reconfig = 1;
6507 case SCTP_AUTHENTICATION:
6508 peer_supports_auth = 1;
6511 peer_supports_idata = 1;
6514 /* one I have not learned yet */
6519 } else if (ptype == SCTP_RANDOM) {
6520 if (plen > sizeof(random_store))
6523 /* already processed a RANDOM */
6526 phdr = sctp_get_next_param(m, offset,
6527 (struct sctp_paramhdr *)random_store,
6531 p_random = (struct sctp_auth_random *)phdr;
6532 random_len = plen - sizeof(*p_random);
6533 /* enforce the random length */
6534 if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) {
6535 SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n");
6539 } else if (ptype == SCTP_HMAC_LIST) {
6543 if (plen > sizeof(hmacs_store))
6546 /* already processed a HMAC list */
6549 phdr = sctp_get_next_param(m, offset,
6550 (struct sctp_paramhdr *)hmacs_store,
6554 hmacs = (struct sctp_auth_hmac_algo *)phdr;
6555 hmacs_len = plen - sizeof(*hmacs);
6556 num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]);
6557 /* validate the hmac list */
6558 if (sctp_verify_hmac_param(hmacs, num_hmacs)) {
6561 if (stcb->asoc.peer_hmacs != NULL)
6562 sctp_free_hmaclist(stcb->asoc.peer_hmacs);
6563 stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs);
6564 if (stcb->asoc.peer_hmacs != NULL) {
6565 for (i = 0; i < num_hmacs; i++) {
6566 (void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs,
6567 ntohs(hmacs->hmac_ids[i]));
6571 } else if (ptype == SCTP_CHUNK_LIST) {
6574 if (plen > sizeof(chunks_store))
6577 /* already processed a Chunks list */
6580 phdr = sctp_get_next_param(m, offset,
6581 (struct sctp_paramhdr *)chunks_store,
6585 chunks = (struct sctp_auth_chunk_list *)phdr;
6586 num_chunks = plen - sizeof(*chunks);
6587 if (stcb->asoc.peer_auth_chunks != NULL)
6588 sctp_clear_chunklist(stcb->asoc.peer_auth_chunks);
6590 stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist();
6591 for (i = 0; i < num_chunks; i++) {
6592 (void)sctp_auth_add_chunk(chunks->chunk_types[i],
6593 stcb->asoc.peer_auth_chunks);
6594 /* record asconf/asconf-ack if listed */
6595 if (chunks->chunk_types[i] == SCTP_ASCONF)
6597 if (chunks->chunk_types[i] == SCTP_ASCONF_ACK)
6602 } else if ((ptype == SCTP_HEARTBEAT_INFO) ||
6603 (ptype == SCTP_STATE_COOKIE) ||
6604 (ptype == SCTP_UNRECOG_PARAM) ||
6605 (ptype == SCTP_COOKIE_PRESERVE) ||
6606 (ptype == SCTP_SUPPORTED_ADDRTYPE) ||
6607 (ptype == SCTP_ADD_IP_ADDRESS) ||
6608 (ptype == SCTP_DEL_IP_ADDRESS) ||
6609 (ptype == SCTP_ERROR_CAUSE_IND) ||
6610 (ptype == SCTP_SUCCESS_REPORT)) {
6613 if ((ptype & 0x8000) == 0x0000) {
6615 * must stop processing the rest of the
6616 * param's. Any report bits were handled
6618 * sctp_arethere_unrecognized_parameters()
6619 * when the INIT or INIT-ACK was first seen.
6626 offset += SCTP_SIZE32(plen);
6627 if (offset >= limit) {
6630 phdr = sctp_get_next_param(m, offset, ¶m_buf,
6633 /* Now check to see if we need to purge any addresses */
6634 TAILQ_FOREACH_SAFE(net, &stcb->asoc.nets, sctp_next, nnet) {
6635 if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) ==
6636 SCTP_ADDR_NOT_IN_ASSOC) {
6637 /* This address has been removed from the asoc */
6638 /* remove and free it */
6639 stcb->asoc.numnets--;
6640 TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next);
6641 sctp_free_remote_addr(net);
6642 if (net == stcb->asoc.primary_destination) {
6643 stcb->asoc.primary_destination = NULL;
6644 sctp_select_primary_destination(stcb);
6648 if ((stcb->asoc.ecn_supported == 1) &&
6649 (peer_supports_ecn == 0)) {
6650 stcb->asoc.ecn_supported = 0;
6652 if ((stcb->asoc.prsctp_supported == 1) &&
6653 (peer_supports_prsctp == 0)) {
6654 stcb->asoc.prsctp_supported = 0;
6656 if ((stcb->asoc.auth_supported == 1) &&
6657 ((peer_supports_auth == 0) ||
6658 (got_random == 0) || (got_hmacs == 0))) {
6659 stcb->asoc.auth_supported = 0;
6661 if ((stcb->asoc.asconf_supported == 1) &&
6662 ((peer_supports_asconf == 0) || (peer_supports_asconf_ack == 0) ||
6663 (stcb->asoc.auth_supported == 0) ||
6664 (saw_asconf == 0) || (saw_asconf_ack == 0))) {
6665 stcb->asoc.asconf_supported = 0;
6667 if ((stcb->asoc.reconfig_supported == 1) &&
6668 (peer_supports_reconfig == 0)) {
6669 stcb->asoc.reconfig_supported = 0;
6671 if ((stcb->asoc.idata_supported == 1) &&
6672 (peer_supports_idata == 0)) {
6673 stcb->asoc.idata_supported = 0;
6675 if ((stcb->asoc.nrsack_supported == 1) &&
6676 (peer_supports_nrsack == 0)) {
6677 stcb->asoc.nrsack_supported = 0;
6679 if ((stcb->asoc.pktdrop_supported == 1) &&
6680 (peer_supports_pktdrop == 0)) {
6681 stcb->asoc.pktdrop_supported = 0;
6683 /* validate authentication required parameters */
6684 if ((peer_supports_auth == 0) && (got_chklist == 1)) {
6685 /* peer does not support auth but sent a chunks list? */
6688 if ((peer_supports_asconf == 1) && (peer_supports_auth == 0)) {
6689 /* peer supports asconf but not auth? */
6691 } else if ((peer_supports_asconf == 1) &&
6692 (peer_supports_auth == 1) &&
6693 ((saw_asconf == 0) || (saw_asconf_ack == 0))) {
6696 /* concatenate the full random key */
6697 keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len;
6698 if (chunks != NULL) {
6699 keylen += sizeof(*chunks) + num_chunks;
6701 new_key = sctp_alloc_key(keylen);
6702 if (new_key != NULL) {
6703 /* copy in the RANDOM */
6704 if (p_random != NULL) {
6705 keylen = sizeof(*p_random) + random_len;
6706 memcpy(new_key->key, p_random, keylen);
6708 /* append in the AUTH chunks */
6709 if (chunks != NULL) {
6710 memcpy(new_key->key + keylen, chunks,
6711 sizeof(*chunks) + num_chunks);
6712 keylen += sizeof(*chunks) + num_chunks;
6714 /* append in the HMACs */
6715 if (hmacs != NULL) {
6716 memcpy(new_key->key + keylen, hmacs,
6717 sizeof(*hmacs) + hmacs_len);
6720 /* failed to get memory for the key */
6723 if (stcb->asoc.authinfo.peer_random != NULL)
6724 sctp_free_key(stcb->asoc.authinfo.peer_random);
6725 stcb->asoc.authinfo.peer_random = new_key;
6726 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid);
6727 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid);
6733 sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa,
6734 struct sctp_nets *net)
6736 /* make sure the requested primary address exists in the assoc */
6737 if (net == NULL && sa)
6738 net = sctp_findnet(stcb, sa);
6741 /* didn't find the requested primary address! */
6744 /* set the primary address */
6745 if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
6746 /* Must be confirmed, so queue to set */
6747 net->dest_state |= SCTP_ADDR_REQ_PRIMARY;
6750 stcb->asoc.primary_destination = net;
6751 if (!(net->dest_state & SCTP_ADDR_PF) && (stcb->asoc.alternate)) {
6752 sctp_free_remote_addr(stcb->asoc.alternate);
6753 stcb->asoc.alternate = NULL;
6755 net = TAILQ_FIRST(&stcb->asoc.nets);
6756 if (net != stcb->asoc.primary_destination) {
6758 * first one on the list is NOT the primary
6759 * sctp_cmpaddr() is much more efficient if the
6760 * primary is the first on the list, make it so.
6762 TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6763 TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6770 sctp_is_vtag_good(uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now)
6773 * This function serves two purposes. It will see if a TAG can be
6774 * re-used and return 1 for yes it is ok and 0 for don't use that
6775 * tag. A secondary function it will do is purge out old tags that
6778 struct sctpvtaghead *chain;
6779 struct sctp_tagblock *twait_block;
6780 struct sctpasochead *head;
6781 struct sctp_tcb *stcb;
6784 SCTP_INP_INFO_RLOCK();
6785 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag,
6786 SCTP_BASE_INFO(hashasocmark))];
6787 LIST_FOREACH(stcb, head, sctp_asocs) {
6789 * We choose not to lock anything here. TCB's can't be
6790 * removed since we have the read lock, so they can't be
6791 * freed on us, same thing for the INP. I may be wrong with
6792 * this assumption, but we will go with it for now :-)
6794 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
6797 if (stcb->asoc.my_vtag == tag) {
6799 if (stcb->rport != rport) {
6802 if (stcb->sctp_ep->sctp_lport != lport) {
6805 /* Its a used tag set */
6806 SCTP_INP_INFO_RUNLOCK();
6810 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
6811 /* Now what about timed wait ? */
6812 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6814 * Block(s) are present, lets see if we have this tag in the
6817 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
6818 if (twait_block->vtag_block[i].v_tag == 0) {
6821 } else if ((long)twait_block->vtag_block[i].tv_sec_at_expire <
6823 /* Audit expires this guy */
6824 twait_block->vtag_block[i].tv_sec_at_expire = 0;
6825 twait_block->vtag_block[i].v_tag = 0;
6826 twait_block->vtag_block[i].lport = 0;
6827 twait_block->vtag_block[i].rport = 0;
6828 } else if ((twait_block->vtag_block[i].v_tag == tag) &&
6829 (twait_block->vtag_block[i].lport == lport) &&
6830 (twait_block->vtag_block[i].rport == rport)) {
6831 /* Bad tag, sorry :< */
6832 SCTP_INP_INFO_RUNLOCK();
6837 SCTP_INP_INFO_RUNLOCK();
6842 sctp_drain_mbufs(struct sctp_tcb *stcb)
6845 * We must hunt this association for MBUF's past the cumack (i.e.
6846 * out of order data that we can renege on).
6848 struct sctp_association *asoc;
6849 struct sctp_tmit_chunk *chk, *nchk;
6850 uint32_t cumulative_tsn_p1;
6851 struct sctp_queued_to_read *control, *ncontrol;
6856 /* We look for anything larger than the cum-ack + 1 */
6859 if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) {
6860 /* none we can reneg on. */
6863 SCTP_STAT_INCR(sctps_protocol_drains_done);
6864 cumulative_tsn_p1 = asoc->cumulative_tsn + 1;
6866 /* Ok that was fun, now we will drain all the inbound streams? */
6867 for (strmat = 0; strmat < asoc->streamincnt; strmat++) {
6868 TAILQ_FOREACH_SAFE(control, &asoc->strmin[strmat].inqueue, next_instrm, ncontrol) {
6870 if (control->on_strm_q != SCTP_ON_ORDERED) {
6871 panic("Huh control: %p on_q: %d -- not ordered?",
6872 control, control->on_strm_q);
6875 if (SCTP_TSN_GT(control->sinfo_tsn, cumulative_tsn_p1)) {
6876 /* Yep it is above cum-ack */
6878 SCTP_CALC_TSN_TO_GAP(gap, control->sinfo_tsn, asoc->mapping_array_base_tsn);
6879 KASSERT(control->length > 0, ("control has zero length"));
6880 if (asoc->size_on_all_streams >= control->length) {
6881 asoc->size_on_all_streams -= control->length;
6884 panic("size_on_all_streams = %u smaller than control length %u", asoc->size_on_all_streams, control->length);
6886 asoc->size_on_all_streams = 0;
6889 sctp_ucount_decr(asoc->cnt_on_all_streams);
6890 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6891 if (control->on_read_q) {
6892 TAILQ_REMOVE(&stcb->sctp_ep->read_queue, control, next);
6893 control->on_read_q = 0;
6895 TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, control, next_instrm);
6896 control->on_strm_q = 0;
6897 if (control->data) {
6898 sctp_m_freem(control->data);
6899 control->data = NULL;
6901 sctp_free_remote_addr(control->whoFrom);
6902 /* Now its reasm? */
6903 TAILQ_FOREACH_SAFE(chk, &control->reasm, sctp_next, nchk) {
6905 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.tsn, asoc->mapping_array_base_tsn);
6906 KASSERT(chk->send_size > 0, ("chunk has zero length"));
6907 if (asoc->size_on_reasm_queue >= chk->send_size) {
6908 asoc->size_on_reasm_queue -= chk->send_size;
6911 panic("size_on_reasm_queue = %u smaller than chunk length %u", asoc->size_on_reasm_queue, chk->send_size);
6913 asoc->size_on_reasm_queue = 0;
6916 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6917 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6918 TAILQ_REMOVE(&control->reasm, chk, sctp_next);
6920 sctp_m_freem(chk->data);
6923 sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
6925 sctp_free_a_readq(stcb, control);
6928 TAILQ_FOREACH_SAFE(control, &asoc->strmin[strmat].uno_inqueue, next_instrm, ncontrol) {
6930 if (control->on_strm_q != SCTP_ON_UNORDERED) {
6931 panic("Huh control: %p on_q: %d -- not unordered?",
6932 control, control->on_strm_q);
6935 if (SCTP_TSN_GT(control->sinfo_tsn, cumulative_tsn_p1)) {
6936 /* Yep it is above cum-ack */
6938 SCTP_CALC_TSN_TO_GAP(gap, control->sinfo_tsn, asoc->mapping_array_base_tsn);
6939 KASSERT(control->length > 0, ("control has zero length"));
6940 if (asoc->size_on_all_streams >= control->length) {
6941 asoc->size_on_all_streams -= control->length;
6944 panic("size_on_all_streams = %u smaller than control length %u", asoc->size_on_all_streams, control->length);
6946 asoc->size_on_all_streams = 0;
6949 sctp_ucount_decr(asoc->cnt_on_all_streams);
6950 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6951 if (control->on_read_q) {
6952 TAILQ_REMOVE(&stcb->sctp_ep->read_queue, control, next);
6953 control->on_read_q = 0;
6955 TAILQ_REMOVE(&asoc->strmin[strmat].uno_inqueue, control, next_instrm);
6956 control->on_strm_q = 0;
6957 if (control->data) {
6958 sctp_m_freem(control->data);
6959 control->data = NULL;
6961 sctp_free_remote_addr(control->whoFrom);
6962 /* Now its reasm? */
6963 TAILQ_FOREACH_SAFE(chk, &control->reasm, sctp_next, nchk) {
6965 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.tsn, asoc->mapping_array_base_tsn);
6966 KASSERT(chk->send_size > 0, ("chunk has zero length"));
6967 if (asoc->size_on_reasm_queue >= chk->send_size) {
6968 asoc->size_on_reasm_queue -= chk->send_size;
6971 panic("size_on_reasm_queue = %u smaller than chunk length %u", asoc->size_on_reasm_queue, chk->send_size);
6973 asoc->size_on_reasm_queue = 0;
6976 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6977 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6978 TAILQ_REMOVE(&control->reasm, chk, sctp_next);
6980 sctp_m_freem(chk->data);
6983 sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
6985 sctp_free_a_readq(stcb, control);
6990 /* We must back down to see what the new highest is */
6991 for (i = asoc->highest_tsn_inside_map; SCTP_TSN_GE(i, asoc->mapping_array_base_tsn); i--) {
6992 SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn);
6993 if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) {
6994 asoc->highest_tsn_inside_map = i;
7000 asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1;
7003 * Question, should we go through the delivery queue? The
7004 * only reason things are on here is the app not reading OR
7005 * a p-d-api up. An attacker COULD send enough in to
7006 * initiate the PD-API and then send a bunch of stuff to
7007 * other streams... these would wind up on the delivery
7008 * queue.. and then we would not get to them. But in order
7009 * to do this I then have to back-track and un-deliver
7010 * sequence numbers in streams.. el-yucko. I think for now
7011 * we will NOT look at the delivery queue and leave it to be
7012 * something to consider later. An alternative would be to
7013 * abort the P-D-API with a notification and then deliver
7014 * the data.... Or another method might be to keep track of
7015 * how many times the situation occurs and if we see a
7016 * possible attack underway just abort the association.
7019 SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt);
7022 * Now do we need to find a new
7023 * asoc->highest_tsn_inside_map?
7025 asoc->last_revoke_count = cnt;
7026 (void)SCTP_OS_TIMER_STOP(&stcb->asoc.dack_timer.timer);
7027 /* sa_ignore NO_NULL_CHK */
7028 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
7029 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED);
7032 * Another issue, in un-setting the TSN's in the mapping array we
7033 * DID NOT adjust the highest_tsn marker. This will cause one of
7034 * two things to occur. It may cause us to do extra work in checking
7035 * for our mapping array movement. More importantly it may cause us
7036 * to SACK every datagram. This may not be a bad thing though since
7037 * we will recover once we get our cum-ack above and all this stuff
7038 * we dumped recovered.
7046 * We must walk the PCB lists for ALL associations here. The system
7047 * is LOW on MBUF's and needs help. This is where reneging will
7048 * occur. We really hope this does NOT happen!
7050 VNET_ITERATOR_DECL(vnet_iter);
7051 VNET_LIST_RLOCK_NOSLEEP();
7052 VNET_FOREACH(vnet_iter) {
7053 CURVNET_SET(vnet_iter);
7054 struct sctp_inpcb *inp;
7055 struct sctp_tcb *stcb;
7057 SCTP_STAT_INCR(sctps_protocol_drain_calls);
7058 if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
7065 SCTP_INP_INFO_RLOCK();
7066 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
7067 /* For each endpoint */
7068 SCTP_INP_RLOCK(inp);
7069 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
7070 /* For each association */
7071 SCTP_TCB_LOCK(stcb);
7072 sctp_drain_mbufs(stcb);
7073 SCTP_TCB_UNLOCK(stcb);
7075 SCTP_INP_RUNLOCK(inp);
7077 SCTP_INP_INFO_RUNLOCK();
7080 VNET_LIST_RUNLOCK_NOSLEEP();
7084 * start a new iterator
7085 * iterates through all endpoints and associations based on the pcb_state
7086 * flags and asoc_state. "af" (mandatory) is executed for all matching
7087 * assocs and "ef" (optional) is executed when the iterator completes.
7088 * "inpf" (optional) is executed for each new endpoint as it is being
7089 * iterated through. inpe (optional) is called when the inp completes
7090 * its way through all the stcbs.
7093 sctp_initiate_iterator(inp_func inpf,
7097 uint32_t pcb_features,
7098 uint32_t asoc_state,
7102 struct sctp_inpcb *s_inp,
7103 uint8_t chunk_output_off)
7105 struct sctp_iterator *it = NULL;
7110 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
7111 SCTP_PRINTF("%s: abort on initialize being %d\n", __func__,
7112 SCTP_BASE_VAR(sctp_pcb_initialized));
7115 SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator),
7118 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
7121 memset(it, 0, sizeof(*it));
7122 it->function_assoc = af;
7123 it->function_inp = inpf;
7125 it->done_current_ep = 0;
7127 it->done_current_ep = 1;
7128 it->function_atend = ef;
7131 it->pcb_flags = pcb_state;
7132 it->pcb_features = pcb_features;
7133 it->asoc_state = asoc_state;
7134 it->function_inp_end = inpe;
7135 it->no_chunk_output = chunk_output_off;
7138 /* Assume lock is held here */
7140 SCTP_INP_INCR_REF(it->inp);
7141 it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP;
7143 SCTP_INP_INFO_RLOCK();
7144 it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead));
7146 SCTP_INP_INCR_REF(it->inp);
7148 SCTP_INP_INFO_RUNLOCK();
7149 it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP;
7152 SCTP_IPI_ITERATOR_WQ_LOCK();
7153 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
7154 SCTP_IPI_ITERATOR_WQ_UNLOCK();
7155 SCTP_PRINTF("%s: rollback on initialize being %d it=%p\n", __func__,
7156 SCTP_BASE_VAR(sctp_pcb_initialized), it);
7157 SCTP_FREE(it, SCTP_M_ITER);
7160 TAILQ_INSERT_TAIL(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
7161 if (sctp_it_ctl.iterator_running == 0) {
7162 sctp_wakeup_iterator();
7164 SCTP_IPI_ITERATOR_WQ_UNLOCK();
7165 /* sa_ignore MEMLEAK {memory is put on the tailq for the iterator} */