2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
4 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
9 * a) Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
12 * b) Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the distribution.
16 * c) Neither the name of Cisco Systems, Inc. nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <netinet/sctp_os.h>
38 #include <netinet/sctp_var.h>
39 #include <netinet/sctp_sysctl.h>
40 #include <netinet/sctp_pcb.h>
41 #include <netinet/sctputil.h>
42 #include <netinet/sctp.h>
43 #include <netinet/sctp_header.h>
44 #include <netinet/sctp_asconf.h>
45 #include <netinet/sctp_output.h>
46 #include <netinet/sctp_timer.h>
47 #include <netinet/sctp_bsd_addr.h>
48 #include <netinet/sctp_dtrace_define.h>
49 #include <netinet/udp.h>
51 #include <netinet6/ip6_var.h>
53 #include <sys/sched.h>
55 #include <sys/unistd.h>
58 VNET_DEFINE(struct sctp_base_info, system_base_info);
60 /* FIX: we don't handle multiple link local scopes */
61 /* "scopeless" replacement IN6_ARE_ADDR_EQUAL */
64 SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b)
66 struct sockaddr_in6 tmp_a, tmp_b;
68 memcpy(&tmp_a, a, sizeof(struct sockaddr_in6));
69 if (sa6_embedscope(&tmp_a, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
72 memcpy(&tmp_b, b, sizeof(struct sockaddr_in6));
73 if (sa6_embedscope(&tmp_b, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
76 return (IN6_ARE_ADDR_EQUAL(&tmp_a.sin6_addr, &tmp_b.sin6_addr));
82 sctp_fill_pcbinfo(struct sctp_pcbinfo *spcb)
85 * We really don't need to lock this, but I will just because it
88 SCTP_INP_INFO_RLOCK();
89 spcb->ep_count = SCTP_BASE_INFO(ipi_count_ep);
90 spcb->asoc_count = SCTP_BASE_INFO(ipi_count_asoc);
91 spcb->laddr_count = SCTP_BASE_INFO(ipi_count_laddr);
92 spcb->raddr_count = SCTP_BASE_INFO(ipi_count_raddr);
93 spcb->chk_count = SCTP_BASE_INFO(ipi_count_chunk);
94 spcb->readq_count = SCTP_BASE_INFO(ipi_count_readq);
95 spcb->stream_oque = SCTP_BASE_INFO(ipi_count_strmoq);
96 spcb->free_chunks = SCTP_BASE_INFO(ipi_free_chunks);
98 SCTP_INP_INFO_RUNLOCK();
102 * Addresses are added to VRF's (Virtual Router's). For BSD we
103 * have only the default VRF 0. We maintain a hash list of
104 * VRF's. Each VRF has its own list of sctp_ifn's. Each of
105 * these has a list of addresses. When we add a new address
106 * to a VRF we lookup the ifn/ifn_index, if the ifn does
107 * not exist we create it and add it to the list of IFN's
108 * within the VRF. Once we have the sctp_ifn, we add the
109 * address to the list. So we look something like:
112 * vrf-> ifn-> ifn -> ifn
114 * ... +--ifa-> ifa -> ifa
117 * We keep these separate lists since the SCTP subsystem will
118 * point to these from its source address selection nets structure.
119 * When an address is deleted it does not happen right away on
120 * the SCTP side, it gets scheduled. What we do when a
121 * delete happens is immediately remove the address from
122 * the master list and decrement the refcount. As our
123 * addip iterator works through and frees the src address
124 * selection pointing to the sctp_ifa, eventually the refcount
125 * will reach 0 and we will delete it. Note that it is assumed
126 * that any locking on system level ifn/ifa is done at the
127 * caller of these functions and these routines will only
128 * lock the SCTP structures as they add or delete things.
130 * Other notes on VRF concepts.
131 * - An endpoint can be in multiple VRF's
132 * - An association lives within a VRF and only one VRF.
133 * - Any incoming packet we can deduce the VRF for by
134 * looking at the mbuf/pak inbound (for BSD its VRF=0 :D)
135 * - Any downward send call or connect call must supply the
136 * VRF via ancillary data or via some sort of set default
137 * VRF socket option call (again for BSD no brainer since
138 * the VRF is always 0).
139 * - An endpoint may add multiple VRF's to it.
140 * - Listening sockets can accept associations in any
141 * of the VRF's they are in but the assoc will end up
142 * in only one VRF (gotten from the packet or connect/send).
147 sctp_allocate_vrf(int vrf_id)
149 struct sctp_vrf *vrf = NULL;
150 struct sctp_vrflist *bucket;
152 /* First allocate the VRF structure */
153 vrf = sctp_find_vrf(vrf_id);
155 /* Already allocated */
158 SCTP_MALLOC(vrf, struct sctp_vrf *, sizeof(struct sctp_vrf),
163 panic("No memory for VRF:%d", vrf_id);
168 memset(vrf, 0, sizeof(struct sctp_vrf));
169 vrf->vrf_id = vrf_id;
170 LIST_INIT(&vrf->ifnlist);
171 vrf->total_ifa_count = 0;
173 /* now also setup table ids */
174 SCTP_INIT_VRF_TABLEID(vrf);
175 /* Init the HASH of addresses */
176 vrf->vrf_addr_hash = SCTP_HASH_INIT(SCTP_VRF_ADDR_HASH_SIZE,
177 &vrf->vrf_addr_hashmark);
178 if (vrf->vrf_addr_hash == NULL) {
181 panic("No memory for VRF:%d", vrf_id);
183 SCTP_FREE(vrf, SCTP_M_VRF);
186 /* Add it to the hash table */
187 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
188 LIST_INSERT_HEAD(bucket, vrf, next_vrf);
189 atomic_add_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
195 sctp_find_ifn(void *ifn, uint32_t ifn_index)
197 struct sctp_ifn *sctp_ifnp;
198 struct sctp_ifnlist *hash_ifn_head;
201 * We assume the lock is held for the addresses if that's wrong
202 * problems could occur :-)
204 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
205 LIST_FOREACH(sctp_ifnp, hash_ifn_head, next_bucket) {
206 if (sctp_ifnp->ifn_index == ifn_index) {
209 if (sctp_ifnp->ifn_p && ifn && (sctp_ifnp->ifn_p == ifn)) {
219 sctp_find_vrf(uint32_t vrf_id)
221 struct sctp_vrflist *bucket;
222 struct sctp_vrf *liste;
224 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
225 LIST_FOREACH(liste, bucket, next_vrf) {
226 if (vrf_id == liste->vrf_id) {
234 sctp_free_vrf(struct sctp_vrf *vrf)
236 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&vrf->refcount)) {
237 if (vrf->vrf_addr_hash) {
238 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
239 vrf->vrf_addr_hash = NULL;
241 /* We zero'd the count */
242 LIST_REMOVE(vrf, next_vrf);
243 SCTP_FREE(vrf, SCTP_M_VRF);
244 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
249 sctp_free_ifn(struct sctp_ifn *sctp_ifnp)
251 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifnp->refcount)) {
252 /* We zero'd the count */
253 if (sctp_ifnp->vrf) {
254 sctp_free_vrf(sctp_ifnp->vrf);
256 SCTP_FREE(sctp_ifnp, SCTP_M_IFN);
257 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
262 sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu)
264 struct sctp_ifn *sctp_ifnp;
266 sctp_ifnp = sctp_find_ifn((void *)NULL, ifn_index);
267 if (sctp_ifnp != NULL) {
268 sctp_ifnp->ifn_mtu = mtu;
274 sctp_free_ifa(struct sctp_ifa *sctp_ifap)
276 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifap->refcount)) {
277 /* We zero'd the count */
278 if (sctp_ifap->ifn_p) {
279 sctp_free_ifn(sctp_ifap->ifn_p);
281 SCTP_FREE(sctp_ifap, SCTP_M_IFA);
282 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
287 sctp_delete_ifn(struct sctp_ifn *sctp_ifnp, int hold_addr_lock)
289 struct sctp_ifn *found;
291 found = sctp_find_ifn(sctp_ifnp->ifn_p, sctp_ifnp->ifn_index);
293 /* Not in the list.. sorry */
296 if (hold_addr_lock == 0)
297 SCTP_IPI_ADDR_WLOCK();
298 LIST_REMOVE(sctp_ifnp, next_bucket);
299 LIST_REMOVE(sctp_ifnp, next_ifn);
300 SCTP_DEREGISTER_INTERFACE(sctp_ifnp->ifn_index,
301 sctp_ifnp->registered_af);
302 if (hold_addr_lock == 0)
303 SCTP_IPI_ADDR_WUNLOCK();
304 /* Take away the reference, and possibly free it */
305 sctp_free_ifn(sctp_ifnp);
309 sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr,
310 const char *if_name, uint32_t ifn_index)
312 struct sctp_vrf *vrf;
313 struct sctp_ifa *sctp_ifap = NULL;
315 SCTP_IPI_ADDR_RLOCK();
316 vrf = sctp_find_vrf(vrf_id);
318 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
322 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
323 if (sctp_ifap == NULL) {
324 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
327 if (sctp_ifap->ifn_p == NULL) {
328 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unuseable\n");
332 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) != 0) {
333 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
334 sctp_ifap->ifn_p->ifn_name, if_name);
338 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
339 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
340 sctp_ifap->ifn_p->ifn_index, ifn_index);
345 sctp_ifap->localifa_flags &= (~SCTP_ADDR_VALID);
346 sctp_ifap->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE;
348 SCTP_IPI_ADDR_RUNLOCK();
352 sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr,
353 const char *if_name, uint32_t ifn_index)
355 struct sctp_vrf *vrf;
356 struct sctp_ifa *sctp_ifap = NULL;
358 SCTP_IPI_ADDR_RLOCK();
359 vrf = sctp_find_vrf(vrf_id);
361 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
365 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
366 if (sctp_ifap == NULL) {
367 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
370 if (sctp_ifap->ifn_p == NULL) {
371 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unuseable\n");
375 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) != 0) {
376 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
377 sctp_ifap->ifn_p->ifn_name, if_name);
381 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
382 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
383 sctp_ifap->ifn_p->ifn_index, ifn_index);
388 sctp_ifap->localifa_flags &= (~SCTP_ADDR_IFA_UNUSEABLE);
389 sctp_ifap->localifa_flags |= SCTP_ADDR_VALID;
391 SCTP_IPI_ADDR_RUNLOCK();
395 * Add an ifa to an ifn.
396 * Register the interface as necessary.
397 * NOTE: ADDR write lock MUST be held.
400 sctp_add_ifa_to_ifn(struct sctp_ifn *sctp_ifnp, struct sctp_ifa *sctp_ifap)
404 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
405 sctp_ifap->ifn_p = sctp_ifnp;
406 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
407 /* update address counts */
408 sctp_ifnp->ifa_count++;
409 ifa_af = sctp_ifap->address.sa.sa_family;
424 if (sctp_ifnp->ifa_count == 1) {
425 /* register the new interface */
426 SCTP_REGISTER_INTERFACE(sctp_ifnp->ifn_index, ifa_af);
427 sctp_ifnp->registered_af = ifa_af;
432 * Remove an ifa from its ifn.
433 * If no more addresses exist, remove the ifn too. Otherwise, re-register
434 * the interface based on the remaining address families left.
435 * NOTE: ADDR write lock MUST be held.
438 sctp_remove_ifa_from_ifn(struct sctp_ifa *sctp_ifap)
440 LIST_REMOVE(sctp_ifap, next_ifa);
441 if (sctp_ifap->ifn_p) {
442 /* update address counts */
443 sctp_ifap->ifn_p->ifa_count--;
444 switch (sctp_ifap->address.sa.sa_family) {
447 sctp_ifap->ifn_p->num_v4--;
452 sctp_ifap->ifn_p->num_v6--;
459 if (LIST_EMPTY(&sctp_ifap->ifn_p->ifalist)) {
460 /* remove the ifn, possibly freeing it */
461 sctp_delete_ifn(sctp_ifap->ifn_p, SCTP_ADDR_LOCKED);
463 /* re-register address family type, if needed */
464 if ((sctp_ifap->ifn_p->num_v6 == 0) &&
465 (sctp_ifap->ifn_p->registered_af == AF_INET6)) {
466 SCTP_DEREGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET6);
467 SCTP_REGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET);
468 sctp_ifap->ifn_p->registered_af = AF_INET;
469 } else if ((sctp_ifap->ifn_p->num_v4 == 0) &&
470 (sctp_ifap->ifn_p->registered_af == AF_INET)) {
471 SCTP_DEREGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET);
472 SCTP_REGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET6);
473 sctp_ifap->ifn_p->registered_af = AF_INET6;
475 /* free the ifn refcount */
476 sctp_free_ifn(sctp_ifap->ifn_p);
478 sctp_ifap->ifn_p = NULL;
483 sctp_add_addr_to_vrf(uint32_t vrf_id, void *ifn, uint32_t ifn_index,
484 uint32_t ifn_type, const char *if_name, void *ifa,
485 struct sockaddr *addr, uint32_t ifa_flags,
488 struct sctp_vrf *vrf;
489 struct sctp_ifn *sctp_ifnp = NULL;
490 struct sctp_ifa *sctp_ifap = NULL;
491 struct sctp_ifalist *hash_addr_head;
492 struct sctp_ifnlist *hash_ifn_head;
493 uint32_t hash_of_addr;
497 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: adding address: ", vrf_id);
498 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
500 SCTP_IPI_ADDR_WLOCK();
501 sctp_ifnp = sctp_find_ifn(ifn, ifn_index);
503 vrf = sctp_ifnp->vrf;
505 vrf = sctp_find_vrf(vrf_id);
507 vrf = sctp_allocate_vrf(vrf_id);
509 SCTP_IPI_ADDR_WUNLOCK();
514 if (sctp_ifnp == NULL) {
516 * build one and add it, can't hold lock until after malloc
519 SCTP_IPI_ADDR_WUNLOCK();
520 SCTP_MALLOC(sctp_ifnp, struct sctp_ifn *,
521 sizeof(struct sctp_ifn), SCTP_M_IFN);
522 if (sctp_ifnp == NULL) {
524 panic("No memory for IFN");
528 memset(sctp_ifnp, 0, sizeof(struct sctp_ifn));
529 sctp_ifnp->ifn_index = ifn_index;
530 sctp_ifnp->ifn_p = ifn;
531 sctp_ifnp->ifn_type = ifn_type;
532 sctp_ifnp->refcount = 0;
533 sctp_ifnp->vrf = vrf;
534 atomic_add_int(&vrf->refcount, 1);
535 sctp_ifnp->ifn_mtu = SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, addr->sa_family);
536 if (if_name != NULL) {
537 snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", if_name);
539 snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", "unknown");
541 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
542 LIST_INIT(&sctp_ifnp->ifalist);
543 SCTP_IPI_ADDR_WLOCK();
544 LIST_INSERT_HEAD(hash_ifn_head, sctp_ifnp, next_bucket);
545 LIST_INSERT_HEAD(&vrf->ifnlist, sctp_ifnp, next_ifn);
546 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
549 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
551 /* Hmm, it already exists? */
552 if ((sctp_ifap->ifn_p) &&
553 (sctp_ifap->ifn_p->ifn_index == ifn_index)) {
554 SCTPDBG(SCTP_DEBUG_PCB4, "Using existing ifn %s (0x%x) for ifa %p\n",
555 sctp_ifap->ifn_p->ifn_name, ifn_index,
558 /* Remove the created one that we don't want */
559 sctp_delete_ifn(sctp_ifnp, SCTP_ADDR_LOCKED);
561 if (sctp_ifap->localifa_flags & SCTP_BEING_DELETED) {
562 /* easy to solve, just switch back to active */
563 SCTPDBG(SCTP_DEBUG_PCB4, "Clearing deleted ifa flag\n");
564 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
565 sctp_ifap->ifn_p = sctp_ifnp;
566 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
569 SCTP_IPI_ADDR_WUNLOCK();
572 if (sctp_ifap->ifn_p) {
574 * The last IFN gets the address, remove the
577 SCTPDBG(SCTP_DEBUG_PCB4, "Moving ifa %p from %s (0x%x) to %s (0x%x)\n",
578 sctp_ifap, sctp_ifap->ifn_p->ifn_name,
579 sctp_ifap->ifn_p->ifn_index, if_name,
581 /* remove the address from the old ifn */
582 sctp_remove_ifa_from_ifn(sctp_ifap);
583 /* move the address over to the new ifn */
584 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
585 goto exit_stage_left;
587 /* repair ifnp which was NULL ? */
588 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
589 SCTPDBG(SCTP_DEBUG_PCB4, "Repairing ifn %p for ifa %p\n",
590 sctp_ifnp, sctp_ifap);
591 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
593 goto exit_stage_left;
596 SCTP_IPI_ADDR_WUNLOCK();
597 SCTP_MALLOC(sctp_ifap, struct sctp_ifa *, sizeof(struct sctp_ifa), SCTP_M_IFA);
598 if (sctp_ifap == NULL) {
600 panic("No memory for IFA");
604 memset(sctp_ifap, 0, sizeof(struct sctp_ifa));
605 sctp_ifap->ifn_p = sctp_ifnp;
606 atomic_add_int(&sctp_ifnp->refcount, 1);
607 sctp_ifap->vrf_id = vrf_id;
608 sctp_ifap->ifa = ifa;
609 memcpy(&sctp_ifap->address, addr, addr->sa_len);
610 sctp_ifap->localifa_flags = SCTP_ADDR_VALID | SCTP_ADDR_DEFER_USE;
611 sctp_ifap->flags = ifa_flags;
613 switch (sctp_ifap->address.sa.sa_family) {
617 struct sockaddr_in *sin;
619 sin = (struct sockaddr_in *)&sctp_ifap->address.sin;
620 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
621 (IN4_ISLOOPBACK_ADDRESS(&sin->sin_addr))) {
622 sctp_ifap->src_is_loop = 1;
624 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
625 sctp_ifap->src_is_priv = 1;
629 new_ifn_af = AF_INET;
636 /* ok to use deprecated addresses? */
637 struct sockaddr_in6 *sin6;
639 sin6 = (struct sockaddr_in6 *)&sctp_ifap->address.sin6;
640 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
641 (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))) {
642 sctp_ifap->src_is_loop = 1;
644 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
645 sctp_ifap->src_is_priv = 1;
649 new_ifn_af = AF_INET6;
657 hash_of_addr = sctp_get_ifa_hash_val(&sctp_ifap->address.sa);
659 if ((sctp_ifap->src_is_priv == 0) &&
660 (sctp_ifap->src_is_loop == 0)) {
661 sctp_ifap->src_is_glob = 1;
663 SCTP_IPI_ADDR_WLOCK();
664 hash_addr_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
665 LIST_INSERT_HEAD(hash_addr_head, sctp_ifap, next_bucket);
666 sctp_ifap->refcount = 1;
667 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
668 sctp_ifnp->ifa_count++;
669 vrf->total_ifa_count++;
670 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
672 SCTP_REGISTER_INTERFACE(ifn_index, new_ifn_af);
673 sctp_ifnp->registered_af = new_ifn_af;
675 SCTP_IPI_ADDR_WUNLOCK();
678 * Bump up the refcount so that when the timer completes it
679 * will drop back down.
681 struct sctp_laddr *wi;
683 atomic_add_int(&sctp_ifap->refcount, 1);
684 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
687 * Gak, what can we do? We have lost an address
688 * change can you say HOSED?
690 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
691 /* Opps, must decrement the count */
692 sctp_del_addr_from_vrf(vrf_id, addr, ifn_index,
696 SCTP_INCR_LADDR_COUNT();
697 bzero(wi, sizeof(*wi));
698 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
700 wi->action = SCTP_ADD_IP_ADDRESS;
703 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
704 SCTP_WQ_ADDR_UNLOCK();
706 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
707 (struct sctp_inpcb *)NULL,
708 (struct sctp_tcb *)NULL,
709 (struct sctp_nets *)NULL);
711 /* it's ready for use */
712 sctp_ifap->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
718 sctp_del_addr_from_vrf(uint32_t vrf_id, struct sockaddr *addr,
719 uint32_t ifn_index, const char *if_name)
721 struct sctp_vrf *vrf;
722 struct sctp_ifa *sctp_ifap = NULL;
724 SCTP_IPI_ADDR_WLOCK();
725 vrf = sctp_find_vrf(vrf_id);
727 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
731 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: deleting address:", vrf_id);
732 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
734 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
736 /* Validate the delete */
737 if (sctp_ifap->ifn_p) {
741 * The name has priority over the ifn_index
742 * if its given. We do this especially for
743 * panda who might recycle indexes fast.
746 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) == 0) {
747 /* They match its a correct delete */
752 /* last ditch check ifn_index */
753 if (ifn_index == sctp_ifap->ifn_p->ifn_index) {
758 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s does not match addresses\n",
759 ifn_index, ((if_name == NULL) ? "NULL" : if_name));
760 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s - ignoring delete\n",
761 sctp_ifap->ifn_p->ifn_index, sctp_ifap->ifn_p->ifn_name);
762 SCTP_IPI_ADDR_WUNLOCK();
766 SCTPDBG(SCTP_DEBUG_PCB4, "Deleting ifa %p\n", sctp_ifap);
767 sctp_ifap->localifa_flags &= SCTP_ADDR_VALID;
768 sctp_ifap->localifa_flags |= SCTP_BEING_DELETED;
769 vrf->total_ifa_count--;
770 LIST_REMOVE(sctp_ifap, next_bucket);
771 sctp_remove_ifa_from_ifn(sctp_ifap);
775 SCTPDBG(SCTP_DEBUG_PCB4, "Del Addr-ifn:%d Could not find address:",
777 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
782 SCTP_IPI_ADDR_WUNLOCK();
784 struct sctp_laddr *wi;
786 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
789 * Gak, what can we do? We have lost an address
790 * change can you say HOSED?
792 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
794 /* Oops, must decrement the count */
795 sctp_free_ifa(sctp_ifap);
798 SCTP_INCR_LADDR_COUNT();
799 bzero(wi, sizeof(*wi));
800 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
802 wi->action = SCTP_DEL_IP_ADDRESS;
805 * Should this really be a tailq? As it is we will process
806 * the newest first :-0
808 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
809 SCTP_WQ_ADDR_UNLOCK();
811 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
812 (struct sctp_inpcb *)NULL,
813 (struct sctp_tcb *)NULL,
814 (struct sctp_nets *)NULL);
820 static struct sctp_tcb *
821 sctp_tcb_special_locate(struct sctp_inpcb **inp_p, struct sockaddr *from,
822 struct sockaddr *to, struct sctp_nets **netp, uint32_t vrf_id)
824 /**** ASSUMES THE CALLER holds the INP_INFO_RLOCK */
826 * If we support the TCP model, then we must now dig through to see
827 * if we can find our endpoint in the list of tcp ep's.
829 uint16_t lport, rport;
830 struct sctppcbhead *ephead;
831 struct sctp_inpcb *inp;
832 struct sctp_laddr *laddr;
833 struct sctp_tcb *stcb;
834 struct sctp_nets *net;
836 if ((to == NULL) || (from == NULL)) {
839 switch (to->sa_family) {
842 if (from->sa_family == AF_INET) {
843 lport = ((struct sockaddr_in *)to)->sin_port;
844 rport = ((struct sockaddr_in *)from)->sin_port;
852 if (from->sa_family == AF_INET6) {
853 lport = ((struct sockaddr_in6 *)to)->sin6_port;
854 rport = ((struct sockaddr_in6 *)from)->sin6_port;
863 ephead = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
865 * Ok now for each of the guys in this bucket we must look and see:
866 * - Does the remote port match. - Does there single association's
867 * addresses match this address (to). If so we update p_ep to point
868 * to this ep and return the tcb from it.
870 LIST_FOREACH(inp, ephead, sctp_hash) {
872 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
873 SCTP_INP_RUNLOCK(inp);
876 if (lport != inp->sctp_lport) {
877 SCTP_INP_RUNLOCK(inp);
880 if (inp->def_vrf_id != vrf_id) {
881 SCTP_INP_RUNLOCK(inp);
884 /* check to see if the ep has one of the addresses */
885 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
886 /* We are NOT bound all, so look further */
889 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
891 if (laddr->ifa == NULL) {
892 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n", __FUNCTION__);
895 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
896 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
899 if (laddr->ifa->address.sa.sa_family ==
901 /* see if it matches */
904 if (from->sa_family == AF_INET) {
905 struct sockaddr_in *intf_addr,
908 intf_addr = &laddr->ifa->address.sin;
909 sin = (struct sockaddr_in *)to;
910 if (sin->sin_addr.s_addr ==
911 intf_addr->sin_addr.s_addr) {
918 if (from->sa_family == AF_INET6) {
919 struct sockaddr_in6 *intf_addr6;
920 struct sockaddr_in6 *sin6;
922 sin6 = (struct sockaddr_in6 *)
924 intf_addr6 = &laddr->ifa->address.sin6;
926 if (SCTP6_ARE_ADDR_EQUAL(sin6,
936 /* This endpoint does not have this address */
937 SCTP_INP_RUNLOCK(inp);
942 * Ok if we hit here the ep has the address, does it hold
946 stcb = LIST_FIRST(&inp->sctp_asoc_list);
948 SCTP_INP_RUNLOCK(inp);
952 if (stcb->rport != rport) {
953 /* remote port does not match. */
954 SCTP_TCB_UNLOCK(stcb);
955 SCTP_INP_RUNLOCK(inp);
958 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
959 SCTP_TCB_UNLOCK(stcb);
960 SCTP_INP_RUNLOCK(inp);
963 /* Does this TCB have a matching address? */
964 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
966 if (net->ro._l_addr.sa.sa_family != from->sa_family) {
967 /* not the same family, can't be a match */
970 switch (from->sa_family) {
974 struct sockaddr_in *sin, *rsin;
976 sin = (struct sockaddr_in *)&net->ro._l_addr;
977 rsin = (struct sockaddr_in *)from;
978 if (sin->sin_addr.s_addr ==
979 rsin->sin_addr.s_addr) {
985 * Update the endpoint
989 SCTP_INP_RUNLOCK(inp);
998 struct sockaddr_in6 *sin6, *rsin6;
1000 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1001 rsin6 = (struct sockaddr_in6 *)from;
1002 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1009 * Update the endpoint
1013 SCTP_INP_RUNLOCK(inp);
1024 SCTP_TCB_UNLOCK(stcb);
1025 SCTP_INP_RUNLOCK(inp);
1031 sctp_does_stcb_own_this_addr(struct sctp_tcb *stcb, struct sockaddr *to)
1033 int loopback_scope, ipv4_local_scope, local_scope, site_scope;
1034 int ipv4_addr_legal, ipv6_addr_legal;
1035 struct sctp_vrf *vrf;
1036 struct sctp_ifn *sctp_ifn;
1037 struct sctp_ifa *sctp_ifa;
1039 loopback_scope = stcb->asoc.loopback_scope;
1040 ipv4_local_scope = stcb->asoc.ipv4_local_scope;
1041 local_scope = stcb->asoc.local_scope;
1042 site_scope = stcb->asoc.site_scope;
1043 ipv4_addr_legal = ipv6_addr_legal = 0;
1044 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1045 ipv6_addr_legal = 1;
1046 if (SCTP_IPV6_V6ONLY(stcb->sctp_ep) == 0) {
1047 ipv4_addr_legal = 1;
1050 ipv4_addr_legal = 1;
1053 SCTP_IPI_ADDR_RLOCK();
1054 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
1056 /* no vrf, no addresses */
1057 SCTP_IPI_ADDR_RUNLOCK();
1060 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1061 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
1062 if ((loopback_scope == 0) &&
1063 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
1066 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
1067 if (sctp_is_addr_restricted(stcb, sctp_ifa) &&
1068 (!sctp_is_addr_pending(stcb, sctp_ifa))) {
1070 * We allow pending addresses, where
1071 * we have sent an asconf-add to be
1076 switch (sctp_ifa->address.sa.sa_family) {
1079 if (ipv4_addr_legal) {
1080 struct sockaddr_in *sin,
1083 sin = &sctp_ifa->address.sin;
1084 rsin = (struct sockaddr_in *)to;
1085 if ((ipv4_local_scope == 0) &&
1086 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
1089 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
1090 SCTP_IPI_ADDR_RUNLOCK();
1098 if (ipv6_addr_legal) {
1099 struct sockaddr_in6 *sin6,
1102 sin6 = &sctp_ifa->address.sin6;
1103 rsin6 = (struct sockaddr_in6 *)to;
1104 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
1105 if (local_scope == 0)
1107 if (sin6->sin6_scope_id == 0) {
1108 if (sa6_recoverscope(sin6) != 0)
1112 if ((site_scope == 0) &&
1113 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
1116 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
1117 SCTP_IPI_ADDR_RUNLOCK();
1130 struct sctp_laddr *laddr;
1132 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
1133 if (sctp_is_addr_restricted(stcb, laddr->ifa) &&
1134 (!sctp_is_addr_pending(stcb, laddr->ifa))) {
1136 * We allow pending addresses, where we have
1137 * sent an asconf-add to be considered
1142 if (laddr->ifa->address.sa.sa_family != to->sa_family) {
1145 switch (to->sa_family) {
1149 struct sockaddr_in *sin, *rsin;
1151 sin = (struct sockaddr_in *)&laddr->ifa->address.sin;
1152 rsin = (struct sockaddr_in *)to;
1153 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
1154 SCTP_IPI_ADDR_RUNLOCK();
1163 struct sockaddr_in6 *sin6, *rsin6;
1165 sin6 = (struct sockaddr_in6 *)&laddr->ifa->address.sin6;
1166 rsin6 = (struct sockaddr_in6 *)to;
1167 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
1168 SCTP_IPI_ADDR_RUNLOCK();
1182 SCTP_IPI_ADDR_RUNLOCK();
1189 * 1) If I return a NULL you must decrement any INP ref cnt. 2) If I find an
1190 * stcb, both will be locked (locked_tcb and stcb) but decrement will be done
1191 * (if locked == NULL). 3) Decrement happens on return ONLY if locked ==
1196 sctp_findassociation_ep_addr(struct sctp_inpcb **inp_p, struct sockaddr *remote,
1197 struct sctp_nets **netp, struct sockaddr *local, struct sctp_tcb *locked_tcb)
1199 struct sctpasochead *head;
1200 struct sctp_inpcb *inp;
1201 struct sctp_tcb *stcb = NULL;
1202 struct sctp_nets *net;
1206 if (remote->sa_family == AF_INET) {
1207 rport = (((struct sockaddr_in *)remote)->sin_port);
1208 } else if (remote->sa_family == AF_INET6) {
1209 rport = (((struct sockaddr_in6 *)remote)->sin6_port);
1215 * UN-lock so we can do proper locking here this occurs when
1216 * called from load_addresses_from_init.
1218 atomic_add_int(&locked_tcb->asoc.refcnt, 1);
1219 SCTP_TCB_UNLOCK(locked_tcb);
1221 SCTP_INP_INFO_RLOCK();
1222 if (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
1224 * Now either this guy is our listener or it's the
1225 * connector. If it is the one that issued the connect, then
1226 * it's only chance is to be the first TCB in the list. If
1227 * it is the acceptor, then do the special_lookup to hash
1228 * and find the real inp.
1230 if ((inp->sctp_socket) && (inp->sctp_socket->so_qlimit)) {
1231 /* to is peer addr, from is my addr */
1232 stcb = sctp_tcb_special_locate(inp_p, remote, local,
1233 netp, inp->def_vrf_id);
1234 if ((stcb != NULL) && (locked_tcb == NULL)) {
1235 /* we have a locked tcb, lower refcount */
1236 SCTP_INP_DECR_REF(inp);
1238 if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
1239 SCTP_INP_RLOCK(locked_tcb->sctp_ep);
1240 SCTP_TCB_LOCK(locked_tcb);
1241 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1242 SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
1244 SCTP_INP_INFO_RUNLOCK();
1247 SCTP_INP_WLOCK(inp);
1248 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1251 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1255 SCTP_TCB_LOCK(stcb);
1257 if (stcb->rport != rport) {
1258 /* remote port does not match. */
1259 SCTP_TCB_UNLOCK(stcb);
1262 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1263 SCTP_TCB_UNLOCK(stcb);
1266 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1267 SCTP_TCB_UNLOCK(stcb);
1270 /* now look at the list of remote addresses */
1271 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1273 if (net == (TAILQ_NEXT(net, sctp_next))) {
1274 panic("Corrupt net list");
1277 if (net->ro._l_addr.sa.sa_family !=
1278 remote->sa_family) {
1279 /* not the same family */
1282 switch (remote->sa_family) {
1286 struct sockaddr_in *sin,
1289 sin = (struct sockaddr_in *)
1291 rsin = (struct sockaddr_in *)remote;
1292 if (sin->sin_addr.s_addr ==
1293 rsin->sin_addr.s_addr) {
1298 if (locked_tcb == NULL) {
1299 SCTP_INP_DECR_REF(inp);
1300 } else if (locked_tcb != stcb) {
1301 SCTP_TCB_LOCK(locked_tcb);
1304 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1306 SCTP_INP_WUNLOCK(inp);
1307 SCTP_INP_INFO_RUNLOCK();
1316 struct sockaddr_in6 *sin6,
1319 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1320 rsin6 = (struct sockaddr_in6 *)remote;
1321 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1327 if (locked_tcb == NULL) {
1328 SCTP_INP_DECR_REF(inp);
1329 } else if (locked_tcb != stcb) {
1330 SCTP_TCB_LOCK(locked_tcb);
1333 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1335 SCTP_INP_WUNLOCK(inp);
1336 SCTP_INP_INFO_RUNLOCK();
1347 SCTP_TCB_UNLOCK(stcb);
1350 SCTP_INP_WLOCK(inp);
1351 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1354 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport,
1355 inp->sctp_hashmark)];
1359 LIST_FOREACH(stcb, head, sctp_tcbhash) {
1360 if (stcb->rport != rport) {
1361 /* remote port does not match */
1364 SCTP_TCB_LOCK(stcb);
1365 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1366 SCTP_TCB_UNLOCK(stcb);
1369 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1370 SCTP_TCB_UNLOCK(stcb);
1373 /* now look at the list of remote addresses */
1374 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1376 if (net == (TAILQ_NEXT(net, sctp_next))) {
1377 panic("Corrupt net list");
1380 if (net->ro._l_addr.sa.sa_family !=
1381 remote->sa_family) {
1382 /* not the same family */
1385 switch (remote->sa_family) {
1389 struct sockaddr_in *sin,
1392 sin = (struct sockaddr_in *)
1394 rsin = (struct sockaddr_in *)remote;
1395 if (sin->sin_addr.s_addr ==
1396 rsin->sin_addr.s_addr) {
1401 if (locked_tcb == NULL) {
1402 SCTP_INP_DECR_REF(inp);
1403 } else if (locked_tcb != stcb) {
1404 SCTP_TCB_LOCK(locked_tcb);
1407 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1409 SCTP_INP_WUNLOCK(inp);
1410 SCTP_INP_INFO_RUNLOCK();
1419 struct sockaddr_in6 *sin6,
1422 sin6 = (struct sockaddr_in6 *)
1424 rsin6 = (struct sockaddr_in6 *)remote;
1425 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1431 if (locked_tcb == NULL) {
1432 SCTP_INP_DECR_REF(inp);
1433 } else if (locked_tcb != stcb) {
1434 SCTP_TCB_LOCK(locked_tcb);
1437 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1439 SCTP_INP_WUNLOCK(inp);
1440 SCTP_INP_INFO_RUNLOCK();
1451 SCTP_TCB_UNLOCK(stcb);
1455 /* clean up for returning null */
1457 SCTP_TCB_LOCK(locked_tcb);
1458 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1460 SCTP_INP_WUNLOCK(inp);
1461 SCTP_INP_INFO_RUNLOCK();
1467 * Find an association for a specific endpoint using the association id given
1468 * out in the COMM_UP notification
1472 sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1475 * Use my the assoc_id to find a endpoint
1477 struct sctpasochead *head;
1478 struct sctp_tcb *stcb;
1482 SCTP_PRINTF("TSNH ep_associd\n");
1485 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1486 SCTP_PRINTF("TSNH ep_associd0\n");
1489 id = (uint32_t) asoc_id;
1490 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
1492 /* invalid id TSNH */
1493 SCTP_PRINTF("TSNH ep_associd1\n");
1496 LIST_FOREACH(stcb, head, sctp_tcbasocidhash) {
1497 if (stcb->asoc.assoc_id == id) {
1498 if (inp != stcb->sctp_ep) {
1500 * some other guy has the same id active (id
1503 SCTP_PRINTF("TSNH ep_associd2\n");
1506 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1510 SCTP_TCB_LOCK(stcb);
1520 sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1522 struct sctp_tcb *stcb;
1524 SCTP_INP_RLOCK(inp);
1525 stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
1526 SCTP_INP_RUNLOCK(inp);
1531 static struct sctp_inpcb *
1532 sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head,
1533 uint16_t lport, uint32_t vrf_id)
1535 struct sctp_inpcb *inp;
1536 struct sctp_laddr *laddr;
1539 struct sockaddr_in *sin;
1543 struct sockaddr_in6 *sin6;
1544 struct sockaddr_in6 *intf_addr6;
1551 * Endpoint probe expects that the INP_INFO is locked.
1559 switch (nam->sa_family) {
1562 sin = (struct sockaddr_in *)nam;
1567 sin6 = (struct sockaddr_in6 *)nam;
1571 /* unsupported family */
1578 LIST_FOREACH(inp, head, sctp_hash) {
1579 SCTP_INP_RLOCK(inp);
1580 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1581 SCTP_INP_RUNLOCK(inp);
1584 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) &&
1585 (inp->sctp_lport == lport)) {
1588 if ((nam->sa_family == AF_INET) &&
1589 (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1590 SCTP_IPV6_V6ONLY(inp)) {
1591 /* IPv4 on a IPv6 socket with ONLY IPv6 set */
1592 SCTP_INP_RUNLOCK(inp);
1597 /* A V6 address and the endpoint is NOT bound V6 */
1598 if (nam->sa_family == AF_INET6 &&
1599 (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
1600 SCTP_INP_RUNLOCK(inp);
1604 /* does a VRF id match? */
1606 if (inp->def_vrf_id == vrf_id)
1609 SCTP_INP_RUNLOCK(inp);
1614 SCTP_INP_RUNLOCK(inp);
1616 switch (nam->sa_family) {
1619 if (sin->sin_addr.s_addr == INADDR_ANY) {
1620 /* Can't hunt for one that has no address specified */
1627 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1628 /* Can't hunt for one that has no address specified */
1637 * ok, not bound to all so see if we can find a EP bound to this
1640 LIST_FOREACH(inp, head, sctp_hash) {
1641 SCTP_INP_RLOCK(inp);
1642 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1643 SCTP_INP_RUNLOCK(inp);
1646 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
1647 SCTP_INP_RUNLOCK(inp);
1651 * Ok this could be a likely candidate, look at all of its
1654 if (inp->sctp_lport != lport) {
1655 SCTP_INP_RUNLOCK(inp);
1658 /* does a VRF id match? */
1660 if (inp->def_vrf_id == vrf_id)
1664 SCTP_INP_RUNLOCK(inp);
1667 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1668 if (laddr->ifa == NULL) {
1669 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
1673 SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ",
1675 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1676 SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n");
1679 if (laddr->ifa->address.sa.sa_family == nam->sa_family) {
1680 /* possible, see if it matches */
1681 switch (nam->sa_family) {
1684 if (sin->sin_addr.s_addr ==
1685 laddr->ifa->address.sin.sin_addr.s_addr) {
1686 SCTP_INP_RUNLOCK(inp);
1693 intf_addr6 = &laddr->ifa->address.sin6;
1694 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1696 SCTP_INP_RUNLOCK(inp);
1704 SCTP_INP_RUNLOCK(inp);
1710 static struct sctp_inpcb *
1711 sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
1713 struct sctppcbhead *head;
1714 struct sctp_inpcb *t_inp;
1717 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1718 SCTP_BASE_INFO(hashmark))];
1719 LIST_FOREACH(t_inp, head, sctp_hash) {
1720 if (t_inp->sctp_lport != lport) {
1723 /* is it in the VRF in question */
1725 if (t_inp->def_vrf_id == vrf_id)
1730 /* This one is in use. */
1731 /* check the v6/v4 binding issue */
1732 if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1733 SCTP_IPV6_V6ONLY(t_inp)) {
1734 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1735 /* collision in V6 space */
1738 /* inp is BOUND_V4 no conflict */
1741 } else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1742 /* t_inp is bound v4 and v6, conflict always */
1745 /* t_inp is bound only V4 */
1746 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1747 SCTP_IPV6_V6ONLY(inp)) {
1751 /* else fall through to conflict */
1760 sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
1762 /* For 1-2-1 with port reuse */
1763 struct sctppcbhead *head;
1764 struct sctp_inpcb *tinp;
1766 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
1767 /* only works with port reuse on */
1770 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) {
1773 SCTP_INP_RUNLOCK(inp);
1774 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport,
1775 SCTP_BASE_INFO(hashmark))];
1776 /* Kick out all non-listeners to the TCP hash */
1777 LIST_FOREACH(tinp, head, sctp_hash) {
1778 if (tinp->sctp_lport != inp->sctp_lport) {
1781 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1784 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
1787 if (tinp->sctp_socket->so_qlimit) {
1790 SCTP_INP_WLOCK(tinp);
1791 LIST_REMOVE(tinp, sctp_hash);
1792 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))];
1793 tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
1794 LIST_INSERT_HEAD(head, tinp, sctp_hash);
1795 SCTP_INP_WUNLOCK(tinp);
1797 SCTP_INP_WLOCK(inp);
1798 /* Pull from where he was */
1799 LIST_REMOVE(inp, sctp_hash);
1800 inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL;
1801 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))];
1802 LIST_INSERT_HEAD(head, inp, sctp_hash);
1803 SCTP_INP_WUNLOCK(inp);
1804 SCTP_INP_RLOCK(inp);
1810 sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock,
1814 * First we check the hash table to see if someone has this port
1815 * bound with just the port.
1817 struct sctp_inpcb *inp;
1818 struct sctppcbhead *head;
1823 struct sockaddr_in *sin;
1827 struct sockaddr_in6 *sin6;
1831 switch (nam->sa_family) {
1834 sin = (struct sockaddr_in *)nam;
1835 lport = sin->sin_port;
1840 sin6 = (struct sockaddr_in6 *)nam;
1841 lport = sin6->sin6_port;
1848 * I could cheat here and just cast to one of the types but we will
1849 * do it right. It also provides the check against an Unsupported
1852 /* Find the head of the ALLADDR chain */
1853 if (have_lock == 0) {
1854 SCTP_INP_INFO_RLOCK();
1856 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1857 SCTP_BASE_INFO(hashmark))];
1858 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1861 * If the TCP model exists it could be that the main listening
1862 * endpoint is gone but there still exists a connected socket for
1863 * this guy. If so we can return the first one that we find. This
1864 * may NOT be the correct one so the caller should be wary on the
1865 * returned INP. Currently the only caller that sets find_tcp_pool
1866 * is in bindx where we are verifying that a user CAN bind the
1867 * address. He either has bound it already, or someone else has, or
1868 * its open to bind, so this is good enough.
1870 if (inp == NULL && find_tcp_pool) {
1871 for (i = 0; i < SCTP_BASE_INFO(hashtcpmark) + 1; i++) {
1872 head = &SCTP_BASE_INFO(sctp_tcpephash)[i];
1873 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1880 SCTP_INP_INCR_REF(inp);
1882 if (have_lock == 0) {
1883 SCTP_INP_INFO_RUNLOCK();
1889 * Find an association for an endpoint with the pointer to whom you want to
1890 * send to and the endpoint pointer. The address can be IPv4 or IPv6. We may
1891 * need to change the *to to some other struct like a mbuf...
1894 sctp_findassociation_addr_sa(struct sockaddr *to, struct sockaddr *from,
1895 struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool,
1898 struct sctp_inpcb *inp = NULL;
1899 struct sctp_tcb *retval;
1901 SCTP_INP_INFO_RLOCK();
1902 if (find_tcp_pool) {
1903 if (inp_p != NULL) {
1904 retval = sctp_tcb_special_locate(inp_p, from, to, netp,
1907 retval = sctp_tcb_special_locate(&inp, from, to, netp,
1910 if (retval != NULL) {
1911 SCTP_INP_INFO_RUNLOCK();
1915 inp = sctp_pcb_findep(to, 0, 1, vrf_id);
1916 if (inp_p != NULL) {
1919 SCTP_INP_INFO_RUNLOCK();
1925 * ok, we have an endpoint, now lets find the assoc for it (if any)
1926 * we now place the source address or from in the to of the find
1927 * endpoint call. Since in reality this chain is used from the
1928 * inbound packet side.
1930 if (inp_p != NULL) {
1931 retval = sctp_findassociation_ep_addr(inp_p, from, netp, to,
1934 retval = sctp_findassociation_ep_addr(&inp, from, netp, to,
1942 * This routine will grub through the mbuf that is a INIT or INIT-ACK and
1943 * find all addresses that the sender has specified in any address list. Each
1944 * address will be used to lookup the TCB and see if one exits.
1946 static struct sctp_tcb *
1947 sctp_findassociation_special_addr(struct mbuf *m, int offset,
1948 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp,
1949 struct sockaddr *dest)
1951 struct sctp_paramhdr *phdr, parm_buf;
1952 struct sctp_tcb *retval;
1953 uint32_t ptype, plen;
1956 struct sockaddr_in sin4;
1960 struct sockaddr_in6 sin6;
1965 memset(&sin4, 0, sizeof(sin4));
1966 sin4.sin_len = sizeof(sin4);
1967 sin4.sin_family = AF_INET;
1968 sin4.sin_port = sh->src_port;
1971 memset(&sin6, 0, sizeof(sin6));
1972 sin6.sin6_len = sizeof(sin6);
1973 sin6.sin6_family = AF_INET6;
1974 sin6.sin6_port = sh->src_port;
1978 offset += sizeof(struct sctp_init_chunk);
1980 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
1981 while (phdr != NULL) {
1982 /* now we must see if we want the parameter */
1983 ptype = ntohs(phdr->param_type);
1984 plen = ntohs(phdr->param_length);
1989 if (ptype == SCTP_IPV4_ADDRESS &&
1990 plen == sizeof(struct sctp_ipv4addr_param)) {
1991 /* Get the rest of the address */
1992 struct sctp_ipv4addr_param ip4_parm, *p4;
1994 phdr = sctp_get_next_param(m, offset,
1995 (struct sctp_paramhdr *)&ip4_parm, min(plen, sizeof(ip4_parm)));
1999 p4 = (struct sctp_ipv4addr_param *)phdr;
2000 memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr));
2002 retval = sctp_findassociation_ep_addr(inp_p,
2003 (struct sockaddr *)&sin4, netp, dest, NULL);
2004 if (retval != NULL) {
2010 if (ptype == SCTP_IPV6_ADDRESS &&
2011 plen == sizeof(struct sctp_ipv6addr_param)) {
2012 /* Get the rest of the address */
2013 struct sctp_ipv6addr_param ip6_parm, *p6;
2015 phdr = sctp_get_next_param(m, offset,
2016 (struct sctp_paramhdr *)&ip6_parm, min(plen, sizeof(ip6_parm)));
2020 p6 = (struct sctp_ipv6addr_param *)phdr;
2021 memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr));
2023 retval = sctp_findassociation_ep_addr(inp_p,
2024 (struct sockaddr *)&sin6, netp, dest, NULL);
2025 if (retval != NULL) {
2030 offset += SCTP_SIZE32(plen);
2031 phdr = sctp_get_next_param(m, offset, &parm_buf,
2037 static struct sctp_tcb *
2038 sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag,
2039 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport,
2040 uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
2043 * Use my vtag to hash. If we find it we then verify the source addr
2044 * is in the assoc. If all goes well we save a bit on rec of a
2047 struct sctpasochead *head;
2048 struct sctp_nets *net;
2049 struct sctp_tcb *stcb;
2053 SCTP_INP_INFO_RLOCK();
2054 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag,
2055 SCTP_BASE_INFO(hashasocmark))];
2058 SCTP_INP_INFO_RUNLOCK();
2061 LIST_FOREACH(stcb, head, sctp_asocs) {
2062 SCTP_INP_RLOCK(stcb->sctp_ep);
2063 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
2064 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2067 if (stcb->sctp_ep->def_vrf_id != vrf_id) {
2068 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2071 SCTP_TCB_LOCK(stcb);
2072 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2073 if (stcb->asoc.my_vtag == vtag) {
2075 if (stcb->rport != rport) {
2076 SCTP_TCB_UNLOCK(stcb);
2079 if (stcb->sctp_ep->sctp_lport != lport) {
2080 SCTP_TCB_UNLOCK(stcb);
2083 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
2084 SCTP_TCB_UNLOCK(stcb);
2087 /* RRS:Need toaddr check here */
2088 if (sctp_does_stcb_own_this_addr(stcb, to) == 0) {
2089 /* Endpoint does not own this address */
2090 SCTP_TCB_UNLOCK(stcb);
2095 * If we have both vtags that's all we match
2098 if (stcb->asoc.peer_vtag == remote_tag) {
2100 * If both tags match we consider it
2101 * conclusive and check NO
2102 * source/destination addresses
2107 if (skip_src_check) {
2110 *netp = sctp_findnet(stcb, from);
2112 *netp = NULL; /* unknown */
2115 *inp_p = stcb->sctp_ep;
2116 SCTP_INP_INFO_RUNLOCK();
2119 net = sctp_findnet(stcb, from);
2123 SCTP_STAT_INCR(sctps_vtagexpress);
2124 *inp_p = stcb->sctp_ep;
2125 SCTP_INP_INFO_RUNLOCK();
2129 * not him, this should only happen in rare
2130 * cases so I peg it.
2132 SCTP_STAT_INCR(sctps_vtagbogus);
2135 SCTP_TCB_UNLOCK(stcb);
2137 SCTP_INP_INFO_RUNLOCK();
2142 * Find an association with the pointer to the inbound IP packet. This can be
2143 * a IPv4 or IPv6 packet.
2146 sctp_findassociation_addr(struct mbuf *m, int offset,
2147 struct sctphdr *sh, struct sctp_chunkhdr *ch,
2148 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2152 struct sctp_tcb *retval;
2153 struct sockaddr_storage to_store, from_store;
2154 struct sockaddr *to = (struct sockaddr *)&to_store;
2155 struct sockaddr *from = (struct sockaddr *)&from_store;
2156 struct sctp_inpcb *inp;
2158 iph = mtod(m, struct ip *);
2159 switch (iph->ip_v) {
2164 struct sockaddr_in *from4;
2166 from4 = (struct sockaddr_in *)&from_store;
2167 bzero(from4, sizeof(*from4));
2168 from4->sin_family = AF_INET;
2169 from4->sin_len = sizeof(struct sockaddr_in);
2170 from4->sin_addr.s_addr = iph->ip_src.s_addr;
2171 from4->sin_port = sh->src_port;
2176 case IPV6_VERSION >> 4:
2179 struct ip6_hdr *ip6;
2180 struct sockaddr_in6 *from6;
2182 ip6 = mtod(m, struct ip6_hdr *);
2183 from6 = (struct sockaddr_in6 *)&from_store;
2184 bzero(from6, sizeof(*from6));
2185 from6->sin6_family = AF_INET6;
2186 from6->sin6_len = sizeof(struct sockaddr_in6);
2187 from6->sin6_addr = ip6->ip6_src;
2188 from6->sin6_port = sh->src_port;
2189 /* Get the scopes in properly to the sin6 addr's */
2190 /* we probably don't need these operations */
2191 (void)sa6_recoverscope(from6);
2192 sa6_embedscope(from6, MODULE_GLOBAL(ip6_use_defzone));
2197 /* Currently not supported. */
2202 switch (iph->ip_v) {
2207 struct sockaddr_in *to4;
2209 to4 = (struct sockaddr_in *)&to_store;
2210 bzero(to4, sizeof(*to4));
2211 to4->sin_family = AF_INET;
2212 to4->sin_len = sizeof(struct sockaddr_in);
2213 to4->sin_addr.s_addr = iph->ip_dst.s_addr;
2214 to4->sin_port = sh->dest_port;
2219 case IPV6_VERSION >> 4:
2222 struct ip6_hdr *ip6;
2223 struct sockaddr_in6 *to6;
2225 ip6 = mtod(m, struct ip6_hdr *);
2226 to6 = (struct sockaddr_in6 *)&to_store;
2227 bzero(to6, sizeof(*to6));
2228 to6->sin6_family = AF_INET6;
2229 to6->sin6_len = sizeof(struct sockaddr_in6);
2230 to6->sin6_addr = ip6->ip6_dst;
2231 to6->sin6_port = sh->dest_port;
2232 /* Get the scopes in properly to the sin6 addr's */
2233 /* we probably don't need these operations */
2234 (void)sa6_recoverscope(to6);
2235 sa6_embedscope(to6, MODULE_GLOBAL(ip6_use_defzone));
2244 /* we only go down this path if vtag is non-zero */
2245 retval = sctp_findassoc_by_vtag(from, to, ntohl(sh->v_tag),
2246 inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0);
2252 if ((ch->chunk_type != SCTP_INITIATION) &&
2253 (ch->chunk_type != SCTP_INITIATION_ACK) &&
2254 (ch->chunk_type != SCTP_COOKIE_ACK) &&
2255 (ch->chunk_type != SCTP_COOKIE_ECHO)) {
2256 /* Other chunk types go to the tcp pool. */
2260 retval = sctp_findassociation_addr_sa(to, from, inp_p, netp,
2261 find_tcp_pool, vrf_id);
2264 retval = sctp_findassociation_addr_sa(to, from, &inp, netp,
2265 find_tcp_pool, vrf_id);
2267 SCTPDBG(SCTP_DEBUG_PCB1, "retval:%p inp:%p\n", retval, inp);
2268 if (retval == NULL && inp) {
2269 /* Found a EP but not this address */
2270 if ((ch->chunk_type == SCTP_INITIATION) ||
2271 (ch->chunk_type == SCTP_INITIATION_ACK)) {
2273 * special hook, we do NOT return linp or an
2274 * association that is linked to an existing
2275 * association that is under the TCP pool (i.e. no
2276 * listener exists). The endpoint finding routine
2277 * will always find a listener before examining the
2280 if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
2286 retval = sctp_findassociation_special_addr(m,
2287 offset, sh, &inp, netp, to);
2288 if (inp_p != NULL) {
2293 SCTPDBG(SCTP_DEBUG_PCB1, "retval is %p\n", retval);
2298 * lookup an association by an ASCONF lookup address.
2299 * if the lookup address is 0.0.0.0 or ::0, use the vtag to do the lookup
2302 sctp_findassociation_ep_asconf(struct mbuf *m, int offset,
2303 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2305 struct sctp_tcb *stcb;
2306 struct sockaddr_storage local_store, remote_store;
2307 struct sockaddr *to;
2309 struct sctp_paramhdr parm_buf, *phdr;
2311 int zero_address = 0;
2314 struct sockaddr_in *sin;
2318 struct ip6_hdr *ip6;
2319 struct sockaddr_in6 *sin6;
2323 memset(&local_store, 0, sizeof(local_store));
2324 memset(&remote_store, 0, sizeof(remote_store));
2325 to = (struct sockaddr *)&local_store;
2326 /* First get the destination address setup too. */
2327 iph = mtod(m, struct ip *);
2328 switch (iph->ip_v) {
2332 sin = (struct sockaddr_in *)&local_store;
2333 sin->sin_family = AF_INET;
2334 sin->sin_len = sizeof(*sin);
2335 sin->sin_port = sh->dest_port;
2336 sin->sin_addr.s_addr = iph->ip_dst.s_addr;
2340 case IPV6_VERSION >> 4:
2342 ip6 = mtod(m, struct ip6_hdr *);
2343 sin6 = (struct sockaddr_in6 *)&local_store;
2344 sin6->sin6_family = AF_INET6;
2345 sin6->sin6_len = sizeof(*sin6);
2346 sin6->sin6_port = sh->dest_port;
2347 sin6->sin6_addr = ip6->ip6_dst;
2354 phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk),
2355 &parm_buf, sizeof(struct sctp_paramhdr));
2357 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n",
2361 ptype = (int)((uint32_t) ntohs(phdr->param_type));
2362 /* get the correlation address */
2365 case SCTP_IPV6_ADDRESS:
2367 /* ipv6 address param */
2368 struct sctp_ipv6addr_param *p6, p6_buf;
2370 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) {
2373 p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m,
2374 offset + sizeof(struct sctp_asconf_chunk),
2375 &p6_buf.ph, sizeof(*p6));
2377 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n",
2381 sin6 = (struct sockaddr_in6 *)&remote_store;
2382 sin6->sin6_family = AF_INET6;
2383 sin6->sin6_len = sizeof(*sin6);
2384 sin6->sin6_port = sh->src_port;
2385 memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr));
2386 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
2392 case SCTP_IPV4_ADDRESS:
2394 /* ipv4 address param */
2395 struct sctp_ipv4addr_param *p4, p4_buf;
2397 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) {
2400 p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m,
2401 offset + sizeof(struct sctp_asconf_chunk),
2402 &p4_buf.ph, sizeof(*p4));
2404 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n",
2408 sin = (struct sockaddr_in *)&remote_store;
2409 sin->sin_family = AF_INET;
2410 sin->sin_len = sizeof(*sin);
2411 sin->sin_port = sh->src_port;
2412 memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr));
2413 if (sin->sin_addr.s_addr == INADDR_ANY)
2419 /* invalid address param type */
2424 stcb = sctp_findassoc_by_vtag(NULL, to, ntohl(sh->v_tag), inp_p,
2425 netp, sh->src_port, sh->dest_port, 1, vrf_id, 0);
2427 * SCTP_PRINTF("findassociation_ep_asconf: zero lookup
2428 * address finds stcb 0x%x\n", (uint32_t)stcb);
2431 stcb = sctp_findassociation_ep_addr(inp_p,
2432 (struct sockaddr *)&remote_store, netp,
2440 * allocate a sctp_inpcb and setup a temporary binding to a port/all
2441 * addresses. This way if we don't get a bind we by default pick a ephemeral
2442 * port with all addresses bound.
2445 sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
2448 * we get called when a new endpoint starts up. We need to allocate
2449 * the sctp_inpcb structure from the zone and init it. Mark it as
2450 * unbound and find a port that we can use as an ephemeral with
2451 * INADDR_ANY. If the user binds later no problem we can then add in
2452 * the specific addresses. And setup the default parameters for the
2456 struct sctp_inpcb *inp;
2458 struct timeval time;
2459 sctp_sharedkey_t *null_key;
2463 SCTP_INP_INFO_WLOCK();
2464 inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb);
2466 SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n");
2467 SCTP_INP_INFO_WUNLOCK();
2468 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2472 bzero(inp, sizeof(*inp));
2474 /* bump generations */
2475 /* setup socket pointers */
2476 inp->sctp_socket = so;
2477 inp->ip_inp.inp.inp_socket = so;
2479 if (MODULE_GLOBAL(ip6_auto_flowlabel)) {
2480 inp->ip_inp.inp.inp_flags |= IN6P_AUTOFLOWLABEL;
2483 inp->sctp_associd_counter = 1;
2484 inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT;
2485 inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
2486 inp->sctp_cmt_on_off = SCTP_BASE_SYSCTL(sctp_cmt_on_off);
2487 inp->sctp_ecn_enable = SCTP_BASE_SYSCTL(sctp_ecn_enable);
2488 /* init the small hash table we use to track asocid <-> tcb */
2489 inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark);
2490 if (inp->sctp_asocidhash == NULL) {
2491 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2492 SCTP_INP_INFO_WUNLOCK();
2497 struct inpcbpolicy *pcb_sp = NULL;
2499 error = ipsec_init_policy(so, &pcb_sp);
2500 /* Arrange to share the policy */
2501 inp->ip_inp.inp.inp_sp = pcb_sp;
2502 ((struct in6pcb *)(&inp->ip_inp.inp))->in6p_sp = pcb_sp;
2505 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2506 SCTP_INP_INFO_WUNLOCK();
2510 SCTP_INCR_EP_COUNT();
2511 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
2512 SCTP_INP_INFO_WUNLOCK();
2514 so->so_pcb = (caddr_t)inp;
2516 if (SCTP_SO_TYPE(so) == SOCK_SEQPACKET) {
2517 /* UDP style socket */
2518 inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
2519 SCTP_PCB_FLAGS_UNBOUND);
2520 /* Be sure it is NON-BLOCKING IO for UDP */
2521 /* SCTP_SET_SO_NBIO(so); */
2522 } else if (SCTP_SO_TYPE(so) == SOCK_STREAM) {
2523 /* TCP style socket */
2524 inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
2525 SCTP_PCB_FLAGS_UNBOUND);
2526 /* Be sure we have blocking IO by default */
2527 SCTP_CLEAR_SO_NBIO(so);
2530 * unsupported socket type (RAW, etc)- in case we missed it
2533 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
2535 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2536 return (EOPNOTSUPP);
2538 if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) {
2539 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2540 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2541 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) {
2542 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2543 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2544 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) {
2545 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2546 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2548 inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize),
2549 &inp->sctp_hashmark);
2550 if (inp->sctp_tcbhash == NULL) {
2551 SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
2552 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2554 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2557 inp->def_vrf_id = vrf_id;
2559 SCTP_INP_INFO_WLOCK();
2560 SCTP_INP_LOCK_INIT(inp);
2561 INP_LOCK_INIT(&inp->ip_inp.inp, "inp", "sctpinp");
2562 SCTP_INP_READ_INIT(inp);
2563 SCTP_ASOC_CREATE_LOCK_INIT(inp);
2564 /* lock the new ep */
2565 SCTP_INP_WLOCK(inp);
2567 /* add it to the info area */
2568 LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list);
2569 SCTP_INP_INFO_WUNLOCK();
2571 TAILQ_INIT(&inp->read_queue);
2572 LIST_INIT(&inp->sctp_addr_list);
2574 LIST_INIT(&inp->sctp_asoc_list);
2576 #ifdef SCTP_TRACK_FREED_ASOCS
2578 LIST_INIT(&inp->sctp_asoc_free_list);
2580 /* Init the timer structure for signature change */
2581 SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer);
2582 inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE;
2584 /* now init the actual endpoint default data */
2587 /* setup the base timeout information */
2588 m->sctp_timeoutticks[SCTP_TIMER_SEND] = SEC_TO_TICKS(SCTP_SEND_SEC); /* needed ? */
2589 m->sctp_timeoutticks[SCTP_TIMER_INIT] = SEC_TO_TICKS(SCTP_INIT_SEC); /* needed ? */
2590 m->sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default));
2591 m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default));
2592 m->sctp_timeoutticks[SCTP_TIMER_PMTU] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default));
2593 m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default));
2594 m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default));
2595 /* all max/min max are in ms */
2596 m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default);
2597 m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default);
2598 m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default);
2599 m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default);
2600 m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default);
2602 m->max_open_streams_intome = MAX_SCTP_STREAMS;
2604 m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default);
2605 m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default);
2606 m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default);
2607 m->def_net_pf_threshold = SCTP_BASE_SYSCTL(sctp_path_pf_threshold);
2608 m->sctp_sws_sender = SCTP_SWS_SENDER_DEF;
2609 m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF;
2610 m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default);
2611 m->fr_max_burst = SCTP_BASE_SYSCTL(sctp_fr_max_burst_default);
2613 m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module);
2614 m->sctp_default_ss_module = SCTP_BASE_SYSCTL(sctp_default_ss_module);
2615 /* number of streams to pre-open on a association */
2616 m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default);
2618 /* Add adaptation cookie */
2619 m->adaptation_layer_indicator = 0x504C5253;
2621 /* seed random number generator */
2622 m->random_counter = 1;
2623 m->store_at = SCTP_SIGNATURE_SIZE;
2624 SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers));
2625 sctp_fill_random_store(m);
2627 /* Minimum cookie size */
2628 m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) +
2629 sizeof(struct sctp_state_cookie);
2630 m->size_of_a_cookie += SCTP_SIGNATURE_SIZE;
2632 /* Setup the initial secret */
2633 (void)SCTP_GETTIME_TIMEVAL(&time);
2634 m->time_of_secret_change = time.tv_sec;
2636 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
2637 m->secret_key[0][i] = sctp_select_initial_TSN(m);
2639 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
2641 /* How long is a cookie good for ? */
2642 m->def_cookie_life = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default));
2644 * Initialize authentication parameters
2646 m->local_hmacs = sctp_default_supported_hmaclist();
2647 m->local_auth_chunks = sctp_alloc_chunklist();
2648 m->default_dscp = 0;
2650 m->default_flowlabel = 0;
2652 m->port = 0; /* encapsulation disabled by default */
2653 sctp_auth_set_default_chunks(m->local_auth_chunks);
2654 LIST_INIT(&m->shared_keys);
2655 /* add default NULL key as key id 0 */
2656 null_key = sctp_alloc_sharedkey();
2657 sctp_insert_sharedkey(&m->shared_keys, null_key);
2658 SCTP_INP_WUNLOCK(inp);
2659 #ifdef SCTP_LOG_CLOSING
2660 sctp_log_closing(inp, NULL, 12);
2667 sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp,
2668 struct sctp_tcb *stcb)
2670 struct sctp_nets *net;
2671 uint16_t lport, rport;
2672 struct sctppcbhead *head;
2673 struct sctp_laddr *laddr, *oladdr;
2675 atomic_add_int(&stcb->asoc.refcnt, 1);
2676 SCTP_TCB_UNLOCK(stcb);
2677 SCTP_INP_INFO_WLOCK();
2678 SCTP_INP_WLOCK(old_inp);
2679 SCTP_INP_WLOCK(new_inp);
2680 SCTP_TCB_LOCK(stcb);
2681 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2683 new_inp->sctp_ep.time_of_secret_change =
2684 old_inp->sctp_ep.time_of_secret_change;
2685 memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key,
2686 sizeof(old_inp->sctp_ep.secret_key));
2687 new_inp->sctp_ep.current_secret_number =
2688 old_inp->sctp_ep.current_secret_number;
2689 new_inp->sctp_ep.last_secret_number =
2690 old_inp->sctp_ep.last_secret_number;
2691 new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie;
2693 /* make it so new data pours into the new socket */
2694 stcb->sctp_socket = new_inp->sctp_socket;
2695 stcb->sctp_ep = new_inp;
2697 /* Copy the port across */
2698 lport = new_inp->sctp_lport = old_inp->sctp_lport;
2699 rport = stcb->rport;
2700 /* Pull the tcb from the old association */
2701 LIST_REMOVE(stcb, sctp_tcbhash);
2702 LIST_REMOVE(stcb, sctp_tcblist);
2703 if (stcb->asoc.in_asocid_hash) {
2704 LIST_REMOVE(stcb, sctp_tcbasocidhash);
2706 /* Now insert the new_inp into the TCP connected hash */
2707 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
2709 LIST_INSERT_HEAD(head, new_inp, sctp_hash);
2710 /* Its safe to access */
2711 new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
2713 /* Now move the tcb into the endpoint list */
2714 LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist);
2716 * Question, do we even need to worry about the ep-hash since we
2717 * only have one connection? Probably not :> so lets get rid of it
2718 * and not suck up any kernel memory in that.
2720 if (stcb->asoc.in_asocid_hash) {
2721 struct sctpasochead *lhd;
2723 lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id,
2724 new_inp->hashasocidmark)];
2725 LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash);
2727 /* Ok. Let's restart timer. */
2728 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2729 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp,
2733 SCTP_INP_INFO_WUNLOCK();
2734 if (new_inp->sctp_tcbhash != NULL) {
2735 SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark);
2736 new_inp->sctp_tcbhash = NULL;
2738 if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2739 /* Subset bound, so copy in the laddr list from the old_inp */
2740 LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) {
2741 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2742 if (laddr == NULL) {
2744 * Gak, what can we do? This assoc is really
2745 * HOSED. We probably should send an abort
2748 SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n");
2751 SCTP_INCR_LADDR_COUNT();
2752 bzero(laddr, sizeof(*laddr));
2753 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2754 laddr->ifa = oladdr->ifa;
2755 atomic_add_int(&laddr->ifa->refcount, 1);
2756 LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr,
2758 new_inp->laddr_count++;
2759 if (oladdr == stcb->asoc.last_used_address) {
2760 stcb->asoc.last_used_address = laddr;
2765 * Now any running timers need to be adjusted since we really don't
2766 * care if they are running or not just blast in the new_inp into
2770 stcb->asoc.dack_timer.ep = (void *)new_inp;
2771 stcb->asoc.asconf_timer.ep = (void *)new_inp;
2772 stcb->asoc.strreset_timer.ep = (void *)new_inp;
2773 stcb->asoc.shut_guard_timer.ep = (void *)new_inp;
2774 stcb->asoc.autoclose_timer.ep = (void *)new_inp;
2775 stcb->asoc.delayed_event_timer.ep = (void *)new_inp;
2776 stcb->asoc.delete_prim_timer.ep = (void *)new_inp;
2777 /* now what about the nets? */
2778 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2779 net->pmtu_timer.ep = (void *)new_inp;
2780 net->hb_timer.ep = (void *)new_inp;
2781 net->rxt_timer.ep = (void *)new_inp;
2783 SCTP_INP_WUNLOCK(new_inp);
2784 SCTP_INP_WUNLOCK(old_inp);
2790 /* sctp_ifap is used to bypass normal local address validation checks */
2792 sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
2793 struct sctp_ifa *sctp_ifap, struct thread *p)
2795 /* bind a ep to a socket address */
2796 struct sctppcbhead *head;
2797 struct sctp_inpcb *inp, *inp_tmp;
2798 struct inpcb *ip_inp;
2799 int port_reuse_active = 0;
2808 inp = (struct sctp_inpcb *)so->so_pcb;
2809 ip_inp = (struct inpcb *)so->so_pcb;
2812 SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port:%d\n",
2813 ntohs(((struct sockaddr_in *)addr)->sin_port));
2814 SCTPDBG(SCTP_DEBUG_PCB1, "Addr :");
2815 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
2818 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2819 /* already did a bind, subsequent binds NOT allowed ! */
2820 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2825 panic("null proc/thread");
2828 switch (addr->sa_family) {
2832 struct sockaddr_in *sin;
2834 /* IPV6_V6ONLY socket? */
2835 if (SCTP_IPV6_V6ONLY(ip_inp)) {
2836 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2839 if (addr->sa_len != sizeof(*sin)) {
2840 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2843 sin = (struct sockaddr_in *)addr;
2844 lport = sin->sin_port;
2846 * For LOOPBACK the prison_local_ip4() call
2847 * will transmute the ip address to the
2850 if (p && (error = prison_local_ip4(p->td_ucred, &sin->sin_addr)) != 0) {
2851 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2854 if (sin->sin_addr.s_addr != INADDR_ANY) {
2864 * Only for pure IPv6 Address. (No IPv4
2867 struct sockaddr_in6 *sin6;
2869 sin6 = (struct sockaddr_in6 *)addr;
2871 if (addr->sa_len != sizeof(*sin6)) {
2872 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2875 lport = sin6->sin6_port;
2878 * For LOOPBACK the prison_local_ip6() call
2879 * will transmute the ipv6 address to the
2882 if (p && (error = prison_local_ip6(p->td_ucred, &sin6->sin6_addr,
2883 (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
2884 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2887 if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2889 /* KAME hack: embed scopeid */
2890 if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
2891 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2895 /* this must be cleared for ifa_ifwithaddr() */
2896 sin6->sin6_scope_id = 0;
2901 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EAFNOSUPPORT);
2902 return (EAFNOSUPPORT);
2905 SCTP_INP_INFO_WLOCK();
2906 SCTP_INP_WLOCK(inp);
2907 /* Setup a vrf_id to be the default for the non-bind-all case. */
2908 vrf_id = inp->def_vrf_id;
2910 /* increase our count due to the unlock we do */
2911 SCTP_INP_INCR_REF(inp);
2914 * Did the caller specify a port? if so we must see if a ep
2915 * already has this one bound.
2917 /* got to be root to get at low ports */
2918 if (ntohs(lport) < IPPORT_RESERVED) {
2920 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2922 SCTP_INP_DECR_REF(inp);
2923 SCTP_INP_WUNLOCK(inp);
2924 SCTP_INP_INFO_WUNLOCK();
2929 SCTP_INP_DECR_REF(inp);
2930 SCTP_INP_WUNLOCK(inp);
2931 SCTP_INP_INFO_WUNLOCK();
2932 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2935 SCTP_INP_WUNLOCK(inp);
2937 vrf_id = inp->def_vrf_id;
2938 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2939 if (inp_tmp != NULL) {
2941 * lock guy returned and lower count note
2942 * that we are not bound so inp_tmp should
2943 * NEVER be inp. And it is this inp
2944 * (inp_tmp) that gets the reference bump,
2945 * so we must lower it.
2947 SCTP_INP_DECR_REF(inp_tmp);
2949 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2950 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2952 * Ok, must be one-2-one and
2953 * allowing port re-use
2955 port_reuse_active = 1;
2956 goto continue_anyway;
2958 SCTP_INP_DECR_REF(inp);
2959 SCTP_INP_INFO_WUNLOCK();
2960 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2961 return (EADDRINUSE);
2964 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2965 if (inp_tmp != NULL) {
2967 * lock guy returned and lower count note
2968 * that we are not bound so inp_tmp should
2969 * NEVER be inp. And it is this inp
2970 * (inp_tmp) that gets the reference bump,
2971 * so we must lower it.
2973 SCTP_INP_DECR_REF(inp_tmp);
2975 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2976 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2978 * Ok, must be one-2-one and
2979 * allowing port re-use
2981 port_reuse_active = 1;
2982 goto continue_anyway;
2984 SCTP_INP_DECR_REF(inp);
2985 SCTP_INP_INFO_WUNLOCK();
2986 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2987 return (EADDRINUSE);
2991 SCTP_INP_WLOCK(inp);
2993 /* verify that no lport is not used by a singleton */
2994 if ((port_reuse_active == 0) &&
2995 (inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))
2997 /* Sorry someone already has this one bound */
2998 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2999 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
3000 port_reuse_active = 1;
3002 SCTP_INP_DECR_REF(inp);
3003 SCTP_INP_WUNLOCK(inp);
3004 SCTP_INP_INFO_WUNLOCK();
3005 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3006 return (EADDRINUSE);
3011 uint16_t first, last, candidate;
3015 if (ip_inp->inp_flags & INP_HIGHPORT) {
3016 first = MODULE_GLOBAL(ipport_hifirstauto);
3017 last = MODULE_GLOBAL(ipport_hilastauto);
3018 } else if (ip_inp->inp_flags & INP_LOWPORT) {
3020 priv_check(p, PRIV_NETINET_RESERVEDPORT)
3022 SCTP_INP_DECR_REF(inp);
3023 SCTP_INP_WUNLOCK(inp);
3024 SCTP_INP_INFO_WUNLOCK();
3025 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
3028 first = MODULE_GLOBAL(ipport_lowfirstauto);
3029 last = MODULE_GLOBAL(ipport_lowlastauto);
3031 first = MODULE_GLOBAL(ipport_firstauto);
3032 last = MODULE_GLOBAL(ipport_lastauto);
3041 count = last - first + 1; /* number of candidates */
3042 candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count);
3046 if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) {
3051 SCTP_INP_DECR_REF(inp);
3052 SCTP_INP_WUNLOCK(inp);
3053 SCTP_INP_INFO_WUNLOCK();
3054 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3055 return (EADDRINUSE);
3057 if (candidate == last)
3060 candidate = candidate + 1;
3063 lport = htons(candidate);
3065 SCTP_INP_DECR_REF(inp);
3066 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE |
3067 SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
3069 * this really should not happen. The guy did a non-blocking
3070 * bind and then did a close at the same time.
3072 SCTP_INP_WUNLOCK(inp);
3073 SCTP_INP_INFO_WUNLOCK();
3074 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3077 /* ok we look clear to give out this port, so lets setup the binding */
3079 /* binding to all addresses, so just set in the proper flags */
3080 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL;
3081 /* set the automatic addr changes from kernel flag */
3082 if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) {
3083 sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3084 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3086 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3087 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3089 if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) {
3090 sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3092 sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3095 * set the automatic mobility_base from kernel flag (by
3098 if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) {
3099 sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE);
3100 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3102 sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE);
3103 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3106 * set the automatic mobility_fasthandoff from kernel flag
3109 if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) {
3110 sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF);
3111 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3113 sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF);
3114 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3118 * bind specific, make sure flags is off and add a new
3119 * address structure to the sctp_addr_list inside the ep
3122 * We will need to allocate one and insert it at the head. The
3123 * socketopt call can just insert new addresses in there as
3124 * well. It will also have to do the embed scope kame hack
3125 * too (before adding).
3127 struct sctp_ifa *ifa;
3128 struct sockaddr_storage store_sa;
3130 memset(&store_sa, 0, sizeof(store_sa));
3131 switch (addr->sa_family) {
3134 struct sockaddr_in *sin;
3136 sin = (struct sockaddr_in *)&store_sa;
3137 memcpy(sin, addr, sizeof(struct sockaddr_in));
3143 struct sockaddr_in6 *sin6;
3145 sin6 = (struct sockaddr_in6 *)&store_sa;
3146 memcpy(sin6, addr, sizeof(struct sockaddr_in6));
3147 sin6->sin6_port = 0;
3154 * first find the interface with the bound address need to
3155 * zero out the port to find the address! yuck! can't do
3156 * this earlier since need port for sctp_pcb_findep()
3158 if (sctp_ifap != NULL)
3162 * Note for BSD we hit here always other O/S's will
3163 * pass things in via the sctp_ifap argument
3166 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&store_sa,
3167 vrf_id, SCTP_ADDR_NOT_LOCKED);
3170 /* Can't find an interface with that address */
3171 SCTP_INP_WUNLOCK(inp);
3172 SCTP_INP_INFO_WUNLOCK();
3173 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRNOTAVAIL);
3174 return (EADDRNOTAVAIL);
3177 if (addr->sa_family == AF_INET6) {
3178 /* GAK, more FIXME IFA lock? */
3179 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
3180 /* Can't bind a non-existent addr. */
3181 SCTP_INP_WUNLOCK(inp);
3182 SCTP_INP_INFO_WUNLOCK();
3183 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3188 /* we're not bound all */
3189 inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL;
3190 /* allow bindx() to send ASCONF's for binding changes */
3191 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3192 /* clear automatic addr changes from kernel flag */
3193 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3195 /* add this address to the endpoint list */
3196 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0);
3198 SCTP_INP_WUNLOCK(inp);
3199 SCTP_INP_INFO_WUNLOCK();
3204 /* find the bucket */
3205 if (port_reuse_active) {
3206 /* Put it into tcp 1-2-1 hash */
3207 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))];
3208 inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
3210 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))];
3212 /* put it in the bucket */
3213 LIST_INSERT_HEAD(head, inp, sctp_hash);
3214 SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n",
3215 head, ntohs(lport), port_reuse_active);
3216 /* set in the port */
3217 inp->sctp_lport = lport;
3219 /* turn off just the unbound flag */
3220 inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
3221 SCTP_INP_WUNLOCK(inp);
3222 SCTP_INP_INFO_WUNLOCK();
3228 sctp_iterator_inp_being_freed(struct sctp_inpcb *inp)
3230 struct sctp_iterator *it, *nit;
3233 * We enter with the only the ITERATOR_LOCK in place and a write
3234 * lock on the inp_info stuff.
3236 it = sctp_it_ctl.cur_it;
3237 if (it && (it->vn != curvnet)) {
3238 /* Its not looking at our VNET */
3241 if (it && (it->inp == inp)) {
3243 * This is tricky and we hold the iterator lock, but when it
3244 * returns and gets the lock (when we release it) the
3245 * iterator will try to operate on inp. We need to stop that
3246 * from happening. But of course the iterator has a
3247 * reference on the stcb and inp. We can mark it and it will
3250 * If its a single iterator situation, we set the end iterator
3251 * flag. Otherwise we set the iterator to go to the next
3255 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3256 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
3258 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_INP;
3262 * Now go through and remove any single reference to our inp that
3263 * may be still pending on the list
3265 SCTP_IPI_ITERATOR_WQ_LOCK();
3266 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
3267 if (it->vn != curvnet) {
3270 if (it->inp == inp) {
3271 /* This one points to me is it inp specific? */
3272 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3273 /* Remove and free this one */
3274 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
3276 if (it->function_atend != NULL) {
3277 (*it->function_atend) (it->pointer, it->val);
3279 SCTP_FREE(it, SCTP_M_ITER);
3281 it->inp = LIST_NEXT(it->inp, sctp_list);
3283 SCTP_INP_INCR_REF(it->inp);
3287 * When its put in the refcnt is incremented so decr
3290 SCTP_INP_DECR_REF(inp);
3293 SCTP_IPI_ITERATOR_WQ_UNLOCK();
3296 /* release sctp_inpcb unbind the port */
3298 sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
3301 * Here we free a endpoint. We must find it (if it is in the Hash
3302 * table) and remove it from there. Then we must also find it in the
3303 * overall list and remove it from there. After all removals are
3304 * complete then any timer has to be stopped. Then start the actual
3305 * freeing. a) Any local lists. b) Any associations. c) The hash of
3306 * all associations. d) finally the ep itself.
3308 struct sctp_tcb *asoc, *nasoc;
3309 struct sctp_laddr *laddr, *nladdr;
3310 struct inpcb *ip_pcb;
3312 int being_refed = 0;
3313 struct sctp_queued_to_read *sq, *nsq;
3315 sctp_sharedkey_t *shared_key, *nshared_key;
3318 #ifdef SCTP_LOG_CLOSING
3319 sctp_log_closing(inp, NULL, 0);
3321 SCTP_ITERATOR_LOCK();
3322 /* mark any iterators on the list or being processed */
3323 sctp_iterator_inp_being_freed(inp);
3324 SCTP_ITERATOR_UNLOCK();
3325 so = inp->sctp_socket;
3326 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
3327 /* been here before.. eeks.. get out of here */
3328 SCTP_PRINTF("This conflict in free SHOULD not be happening! from %d, imm %d\n", from, immediate);
3329 #ifdef SCTP_LOG_CLOSING
3330 sctp_log_closing(inp, NULL, 1);
3334 SCTP_ASOC_CREATE_LOCK(inp);
3335 SCTP_INP_INFO_WLOCK();
3337 SCTP_INP_WLOCK(inp);
3338 if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
3339 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP;
3340 /* socket is gone, so no more wakeups allowed */
3341 inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE;
3342 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
3343 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
3346 /* First time through we have the socket lock, after that no more. */
3347 sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL,
3348 SCTP_FROM_SCTP_PCB + SCTP_LOC_1);
3351 sctp_m_freem(inp->control);
3352 inp->control = NULL;
3355 sctp_m_freem(inp->pkt);
3358 ip_pcb = &inp->ip_inp.inp; /* we could just cast the main pointer
3359 * here but I will be nice :> (i.e.
3361 if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
3365 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3366 SCTP_TCB_LOCK(asoc);
3367 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3368 /* Skip guys being freed */
3370 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3372 * Special case - we did not start a
3373 * kill timer on the asoc due to it
3374 * was not closed. So go ahead and
3377 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3378 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3380 SCTP_TCB_UNLOCK(asoc);
3383 if (((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_WAIT) ||
3384 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_ECHOED)) &&
3385 (asoc->asoc.total_output_queue_size == 0)) {
3387 * If we have data in queue, we don't want
3388 * to just free since the app may have done,
3389 * send()/close or connect/send/close. And
3390 * it wants the data to get across first.
3392 /* Just abandon things in the front states */
3393 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE,
3394 SCTP_FROM_SCTP_PCB + SCTP_LOC_2) == 0) {
3399 /* Disconnect the socket please */
3400 asoc->sctp_socket = NULL;
3401 asoc->asoc.state |= SCTP_STATE_CLOSED_SOCKET;
3402 if ((asoc->asoc.size_on_reasm_queue > 0) ||
3403 (asoc->asoc.control_pdapi) ||
3404 (asoc->asoc.size_on_all_streams > 0) ||
3405 (so && (so->so_rcv.sb_cc > 0))) {
3406 /* Left with Data unread */
3407 struct mbuf *op_err;
3409 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3410 0, M_DONTWAIT, 1, MT_DATA);
3412 /* Fill in the user initiated abort */
3413 struct sctp_paramhdr *ph;
3416 SCTP_BUF_LEN(op_err) =
3417 sizeof(struct sctp_paramhdr) + sizeof(uint32_t);
3419 struct sctp_paramhdr *);
3420 ph->param_type = htons(
3421 SCTP_CAUSE_USER_INITIATED_ABT);
3422 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3423 ippp = (uint32_t *) (ph + 1);
3424 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_3);
3426 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_3;
3427 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3428 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3429 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3430 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3431 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3433 if (sctp_free_assoc(inp, asoc,
3434 SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_4) == 0) {
3438 } else if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3439 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3440 (asoc->asoc.stream_queue_cnt == 0)
3442 if (asoc->asoc.locked_on_sending) {
3445 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
3446 (SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
3447 struct sctp_nets *netp;
3449 if (asoc->asoc.alternate) {
3450 netp = asoc->asoc.alternate;
3452 netp = asoc->asoc.primary_destination;
3455 * there is nothing queued to send,
3456 * so I send shutdown
3458 sctp_send_shutdown(asoc, netp);
3459 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3460 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3461 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3463 SCTP_SET_STATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_SENT);
3464 SCTP_CLEAR_SUBSTATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_PENDING);
3465 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, asoc->sctp_ep, asoc,
3467 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3468 asoc->asoc.primary_destination);
3469 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED);
3472 /* mark into shutdown pending */
3473 struct sctp_stream_queue_pending *sp;
3475 asoc->asoc.state |= SCTP_STATE_SHUTDOWN_PENDING;
3476 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3477 asoc->asoc.primary_destination);
3478 if (asoc->asoc.locked_on_sending) {
3479 sp = TAILQ_LAST(&((asoc->asoc.locked_on_sending)->outqueue),
3482 SCTP_PRINTF("Error, sp is NULL, locked on sending is %p strm:%d\n",
3483 asoc->asoc.locked_on_sending,
3484 asoc->asoc.locked_on_sending->stream_no);
3486 if ((sp->length == 0) && (sp->msg_is_complete == 0))
3487 asoc->asoc.state |= SCTP_STATE_PARTIAL_MSG_LEFT;
3490 if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3491 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3492 (asoc->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
3493 struct mbuf *op_err;
3496 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3497 0, M_DONTWAIT, 1, MT_DATA);
3503 struct sctp_paramhdr *ph;
3506 SCTP_BUF_LEN(op_err) =
3507 (sizeof(struct sctp_paramhdr) +
3510 struct sctp_paramhdr *);
3511 ph->param_type = htons(
3512 SCTP_CAUSE_USER_INITIATED_ABT);
3513 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3514 ippp = (uint32_t *) (ph + 1);
3515 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_5);
3517 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_5;
3518 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3519 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3520 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3521 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3522 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3524 if (sctp_free_assoc(inp, asoc,
3525 SCTP_PCBFREE_NOFORCE,
3526 SCTP_FROM_SCTP_PCB + SCTP_LOC_6) == 0) {
3531 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
3535 SCTP_TCB_UNLOCK(asoc);
3537 /* now is there some left in our SHUTDOWN state? */
3539 #ifdef SCTP_LOG_CLOSING
3540 sctp_log_closing(inp, NULL, 2);
3542 inp->sctp_socket = NULL;
3543 SCTP_INP_WUNLOCK(inp);
3544 SCTP_ASOC_CREATE_UNLOCK(inp);
3545 SCTP_INP_INFO_WUNLOCK();
3549 inp->sctp_socket = NULL;
3550 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) !=
3551 SCTP_PCB_FLAGS_UNBOUND) {
3553 * ok, this guy has been bound. It's port is somewhere in
3554 * the SCTP_BASE_INFO(hash table). Remove it!
3556 LIST_REMOVE(inp, sctp_hash);
3557 inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND;
3560 * If there is a timer running to kill us, forget it, since it may
3561 * have a contest on the INP lock.. which would cause us to die ...
3564 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3565 SCTP_TCB_LOCK(asoc);
3566 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3567 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3568 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3569 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3572 SCTP_TCB_UNLOCK(asoc);
3575 /* Free associations that are NOT killing us */
3576 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_COOKIE_WAIT) &&
3577 ((asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) {
3578 struct mbuf *op_err;
3581 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3582 0, M_DONTWAIT, 1, MT_DATA);
3584 /* Fill in the user initiated abort */
3585 struct sctp_paramhdr *ph;
3587 SCTP_BUF_LEN(op_err) = (sizeof(struct sctp_paramhdr) +
3589 ph = mtod(op_err, struct sctp_paramhdr *);
3590 ph->param_type = htons(
3591 SCTP_CAUSE_USER_INITIATED_ABT);
3592 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3593 ippp = (uint32_t *) (ph + 1);
3594 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_7);
3597 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_7;
3598 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3599 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3600 } else if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3602 SCTP_TCB_UNLOCK(asoc);
3605 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3606 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3607 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3609 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_8) == 0) {
3614 /* Ok we have someone out there that will kill us */
3615 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3616 #ifdef SCTP_LOG_CLOSING
3617 sctp_log_closing(inp, NULL, 3);
3619 SCTP_INP_WUNLOCK(inp);
3620 SCTP_ASOC_CREATE_UNLOCK(inp);
3621 SCTP_INP_INFO_WUNLOCK();
3624 if (SCTP_INP_LOCK_CONTENDED(inp))
3626 if (SCTP_INP_READ_CONTENDED(inp))
3628 if (SCTP_ASOC_CREATE_LOCK_CONTENDED(inp))
3631 if ((inp->refcount) ||
3633 (inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) {
3634 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3635 #ifdef SCTP_LOG_CLOSING
3636 sctp_log_closing(inp, NULL, 4);
3638 sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
3639 SCTP_INP_WUNLOCK(inp);
3640 SCTP_ASOC_CREATE_UNLOCK(inp);
3641 SCTP_INP_INFO_WUNLOCK();
3644 inp->sctp_ep.signature_change.type = 0;
3645 inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE;
3647 * Remove it from the list .. last thing we need a lock for.
3649 LIST_REMOVE(inp, sctp_list);
3650 SCTP_INP_WUNLOCK(inp);
3651 SCTP_ASOC_CREATE_UNLOCK(inp);
3652 SCTP_INP_INFO_WUNLOCK();
3654 * Now we release all locks. Since this INP cannot be found anymore
3655 * except possibly by the kill timer that might be running. We call
3656 * the drain function here. It should hit the case were it sees the
3657 * ACTIVE flag cleared and exit out freeing us to proceed and
3658 * destroy everything.
3660 if (from != SCTP_CALLED_FROM_INPKILL_TIMER) {
3661 (void)SCTP_OS_TIMER_STOP_DRAIN(&inp->sctp_ep.signature_change.timer);
3663 /* Probably un-needed */
3664 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3667 #ifdef SCTP_LOG_CLOSING
3668 sctp_log_closing(inp, NULL, 5);
3672 if ((inp->sctp_asocidhash) != NULL) {
3673 SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark);
3674 inp->sctp_asocidhash = NULL;
3676 /* sa_ignore FREED_MEMORY */
3677 TAILQ_FOREACH_SAFE(sq, &inp->read_queue, next, nsq) {
3678 /* Its only abandoned if it had data left */
3680 SCTP_STAT_INCR(sctps_left_abandon);
3682 TAILQ_REMOVE(&inp->read_queue, sq, next);
3683 sctp_free_remote_addr(sq->whoFrom);
3685 so->so_rcv.sb_cc -= sq->length;
3687 sctp_m_freem(sq->data);
3691 * no need to free the net count, since at this point all
3694 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
3695 SCTP_DECR_READQ_COUNT();
3697 /* Now the sctp_pcb things */
3699 * free each asoc if it is not already closed/free. we can't use the
3700 * macro here since le_next will get freed as part of the
3701 * sctp_free_assoc() call.
3705 ipsec_delete_pcbpolicy(ip_pcb);
3708 /* Unlocks not needed since the socket is gone now */
3710 if (ip_pcb->inp_options) {
3711 (void)sctp_m_free(ip_pcb->inp_options);
3712 ip_pcb->inp_options = 0;
3715 if (ip_pcb->inp_vflag & INP_IPV6) {
3716 struct in6pcb *in6p;
3718 in6p = (struct in6pcb *)inp;
3719 ip6_freepcbopts(in6p->in6p_outputopts);
3722 ip_pcb->inp_vflag = 0;
3723 /* free up authentication fields */
3724 if (inp->sctp_ep.local_auth_chunks != NULL)
3725 sctp_free_chunklist(inp->sctp_ep.local_auth_chunks);
3726 if (inp->sctp_ep.local_hmacs != NULL)
3727 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3729 LIST_FOREACH_SAFE(shared_key, &inp->sctp_ep.shared_keys, next, nshared_key) {
3730 LIST_REMOVE(shared_key, next);
3731 sctp_free_sharedkey(shared_key);
3732 /* sa_ignore FREED_MEMORY */
3736 * if we have an address list the following will free the list of
3737 * ifaddr's that are set into this ep. Again macro limitations here,
3738 * since the LIST_FOREACH could be a bad idea.
3740 LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
3741 sctp_remove_laddr(laddr);
3744 #ifdef SCTP_TRACK_FREED_ASOCS
3746 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_free_list, sctp_tcblist, nasoc) {
3747 LIST_REMOVE(asoc, sctp_tcblist);
3748 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), asoc);
3749 SCTP_DECR_ASOC_COUNT();
3751 /* *** END TEMP CODE *** */
3753 /* Now lets see about freeing the EP hash table. */
3754 if (inp->sctp_tcbhash != NULL) {
3755 SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
3756 inp->sctp_tcbhash = NULL;
3758 /* Now we must put the ep memory back into the zone pool */
3759 INP_LOCK_DESTROY(&inp->ip_inp.inp);
3760 SCTP_INP_LOCK_DESTROY(inp);
3761 SCTP_INP_READ_DESTROY(inp);
3762 SCTP_ASOC_CREATE_LOCK_DESTROY(inp);
3763 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
3764 SCTP_DECR_EP_COUNT();
3769 sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
3771 struct sctp_nets *net;
3773 /* locate the address */
3774 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3775 if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr))
3783 sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
3785 struct sctp_ifa *sctp_ifa;
3787 sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED);
3796 * add's a remote endpoint address, done with the INIT/INIT-ACK as well as
3797 * when a ASCONF arrives that adds it. It will also initialize all the cwnd
3801 sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
3802 struct sctp_nets **netp, int set_scope, int from)
3805 * The following is redundant to the same lines in the
3806 * sctp_aloc_assoc() but is needed since others call the add address
3809 struct sctp_nets *net, *netfirst;
3812 SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ",
3814 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr);
3816 netfirst = sctp_findnet(stcb, newaddr);
3819 * Lie and return ok, we don't want to make the association
3820 * go away for this behavior. It will happen in the TCP
3821 * model in a connected socket. It does not reach the hash
3822 * table until after the association is built so it can't be
3823 * found. Mark as reachable, since the initial creation will
3824 * have been cleared and the NOT_IN_ASSOC flag will have
3825 * been added... and we don't want to end up removing it
3828 if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) {
3829 netfirst->dest_state = (SCTP_ADDR_REACHABLE |
3830 SCTP_ADDR_UNCONFIRMED);
3832 netfirst->dest_state = SCTP_ADDR_REACHABLE;
3838 switch (newaddr->sa_family) {
3842 struct sockaddr_in *sin;
3844 sin = (struct sockaddr_in *)newaddr;
3845 if (sin->sin_addr.s_addr == 0) {
3846 /* Invalid address */
3849 /* zero out the bzero area */
3850 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
3852 /* assure len is set */
3853 sin->sin_len = sizeof(struct sockaddr_in);
3855 #ifdef SCTP_DONT_DO_PRIVADDR_SCOPE
3856 stcb->ipv4_local_scope = 1;
3858 if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
3859 stcb->asoc.ipv4_local_scope = 1;
3861 #endif /* SCTP_DONT_DO_PRIVADDR_SCOPE */
3863 /* Validate the address is in scope */
3864 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) &&
3865 (stcb->asoc.ipv4_local_scope == 0)) {
3875 struct sockaddr_in6 *sin6;
3877 sin6 = (struct sockaddr_in6 *)newaddr;
3878 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3879 /* Invalid address */
3882 /* assure len is set */
3883 sin6->sin6_len = sizeof(struct sockaddr_in6);
3885 if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) {
3886 stcb->asoc.loopback_scope = 1;
3887 stcb->asoc.local_scope = 0;
3888 stcb->asoc.ipv4_local_scope = 1;
3889 stcb->asoc.site_scope = 1;
3890 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
3892 * If the new destination is a
3893 * LINK_LOCAL we must have common
3894 * site scope. Don't set the local
3895 * scope since we may not share all
3896 * links, only loopback can do this.
3897 * Links on the local network would
3898 * also be on our private network
3901 stcb->asoc.ipv4_local_scope = 1;
3902 stcb->asoc.site_scope = 1;
3903 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
3905 * If the new destination is
3906 * SITE_LOCAL then we must have site
3909 stcb->asoc.site_scope = 1;
3912 /* Validate the address is in scope */
3913 if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) &&
3914 (stcb->asoc.loopback_scope == 0)) {
3916 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
3917 (stcb->asoc.local_scope == 0)) {
3919 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
3920 (stcb->asoc.site_scope == 0)) {
3928 /* not supported family type */
3931 net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets);
3935 SCTP_INCR_RADDR_COUNT();
3936 bzero(net, sizeof(struct sctp_nets));
3937 (void)SCTP_GETTIME_TIMEVAL(&net->start_time);
3938 memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len);
3939 switch (newaddr->sa_family) {
3942 ((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport;
3947 ((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport;
3953 net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id);
3954 if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) {
3955 stcb->asoc.loopback_scope = 1;
3956 stcb->asoc.ipv4_local_scope = 1;
3957 stcb->asoc.local_scope = 0;
3958 stcb->asoc.site_scope = 1;
3961 net->failure_threshold = stcb->asoc.def_net_failure;
3962 net->pf_threshold = stcb->asoc.def_net_pf_threshold;
3963 if (addr_inscope == 0) {
3964 net->dest_state = (SCTP_ADDR_REACHABLE |
3965 SCTP_ADDR_OUT_OF_SCOPE);
3967 if (from == SCTP_ADDR_IS_CONFIRMED)
3968 /* SCTP_ADDR_IS_CONFIRMED is passed by connect_x */
3969 net->dest_state = SCTP_ADDR_REACHABLE;
3971 net->dest_state = SCTP_ADDR_REACHABLE |
3972 SCTP_ADDR_UNCONFIRMED;
3975 * We set this to 0, the timer code knows that this means its an
3978 net->rto_needed = 1;
3980 net->RTO_measured = 0;
3981 stcb->asoc.numnets++;
3983 net->cwr_window_tsn = net->last_cwr_tsn = stcb->asoc.sending_seq - 1;
3984 net->port = stcb->asoc.port;
3985 net->dscp = stcb->asoc.default_dscp;
3987 net->flowlabel = stcb->asoc.default_flowlabel;
3989 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
3990 net->dest_state |= SCTP_ADDR_NOHB;
3992 net->dest_state &= ~SCTP_ADDR_NOHB;
3994 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DO_NOT_PMTUD)) {
3995 net->dest_state |= SCTP_ADDR_NO_PMTUD;
3997 net->dest_state &= ~SCTP_ADDR_NO_PMTUD;
3999 net->heart_beat_delay = stcb->asoc.heart_beat_delay;
4000 /* Init the timer structure */
4001 SCTP_OS_TIMER_INIT(&net->rxt_timer.timer);
4002 SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer);
4003 SCTP_OS_TIMER_INIT(&net->hb_timer.timer);
4005 /* Now generate a route for this guy */
4007 /* KAME hack: embed scopeid */
4008 if (newaddr->sa_family == AF_INET6) {
4009 struct sockaddr_in6 *sin6;
4011 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
4012 (void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone));
4013 sin6->sin6_scope_id = 0;
4016 SCTP_RTALLOC((sctp_route_t *) & net->ro, stcb->asoc.vrf_id);
4018 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) {
4019 /* Get source address */
4020 net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep,
4022 (sctp_route_t *) & net->ro,
4026 /* Now get the interface MTU */
4027 if (net->ro._s_addr && net->ro._s_addr->ifn_p) {
4028 net->mtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p);
4033 rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_rt);
4036 * Start things off to match mtu of
4039 SCTP_SET_MTU_OF_ROUTE(&net->ro._l_addr.sa,
4040 net->ro.ro_rt, net->mtu);
4043 * we take the route mtu over the interface,
4044 * since the route may be leading out the
4045 * loopback, or a different interface.
4051 if (net->mtu == 0) {
4052 switch (newaddr->sa_family) {
4055 net->mtu = SCTP_DEFAULT_MTU;
4068 net->mtu -= (uint32_t) sizeof(struct udphdr);
4070 if (from == SCTP_ALLOC_ASOC) {
4071 stcb->asoc.smallest_mtu = net->mtu;
4073 if (stcb->asoc.smallest_mtu > net->mtu) {
4074 stcb->asoc.smallest_mtu = net->mtu;
4077 if (newaddr->sa_family == AF_INET6) {
4078 struct sockaddr_in6 *sin6;
4080 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
4081 (void)sa6_recoverscope(sin6);
4085 /* JRS - Use the congestion control given in the CC module */
4086 if (stcb->asoc.cc_functions.sctp_set_initial_cc_param != NULL)
4087 (*stcb->asoc.cc_functions.sctp_set_initial_cc_param) (stcb, net);
4090 * CMT: CUC algo - set find_pseudo_cumack to TRUE (1) at beginning
4091 * of assoc (2005/06/27, iyengar@cis.udel.edu)
4093 net->find_pseudo_cumack = 1;
4094 net->find_rtx_pseudo_cumack = 1;
4095 net->src_addr_selected = 0;
4096 /* Choose an initial flowid. */
4097 net->flowid = stcb->asoc.my_vtag ^
4098 ntohs(stcb->rport) ^
4099 ntohs(stcb->sctp_ep->sctp_lport);
4106 netfirst = TAILQ_FIRST(&stcb->asoc.nets);
4107 if (net->ro.ro_rt == NULL) {
4108 /* Since we have no route put it at the back */
4109 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4110 } else if (netfirst == NULL) {
4111 /* We are the first one in the pool. */
4112 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4113 } else if (netfirst->ro.ro_rt == NULL) {
4115 * First one has NO route. Place this one ahead of the first
4118 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4119 } else if (net->ro.ro_rt->rt_ifp != netfirst->ro.ro_rt->rt_ifp) {
4121 * This one has a different interface than the one at the
4122 * top of the list. Place it ahead.
4124 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4127 * Ok we have the same interface as the first one. Move
4128 * forward until we find either a) one with a NULL route...
4129 * insert ahead of that b) one with a different ifp.. insert
4130 * after that. c) end of the list.. insert at the tail.
4132 struct sctp_nets *netlook;
4135 netlook = TAILQ_NEXT(netfirst, sctp_next);
4136 if (netlook == NULL) {
4137 /* End of the list */
4138 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4140 } else if (netlook->ro.ro_rt == NULL) {
4141 /* next one has NO route */
4142 TAILQ_INSERT_BEFORE(netfirst, net, sctp_next);
4144 } else if (netlook->ro.ro_rt->rt_ifp != net->ro.ro_rt->rt_ifp) {
4145 TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook,
4151 } while (netlook != NULL);
4154 /* got to have a primary set */
4155 if (stcb->asoc.primary_destination == 0) {
4156 stcb->asoc.primary_destination = net;
4157 } else if ((stcb->asoc.primary_destination->ro.ro_rt == NULL) &&
4159 ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
4160 /* No route to current primary adopt new primary */
4161 stcb->asoc.primary_destination = net;
4163 /* Validate primary is first */
4164 net = TAILQ_FIRST(&stcb->asoc.nets);
4165 if ((net != stcb->asoc.primary_destination) &&
4166 (stcb->asoc.primary_destination)) {
4168 * first one on the list is NOT the primary sctp_cmpaddr()
4169 * is much more efficient if the primary is the first on the
4172 TAILQ_REMOVE(&stcb->asoc.nets,
4173 stcb->asoc.primary_destination, sctp_next);
4174 TAILQ_INSERT_HEAD(&stcb->asoc.nets,
4175 stcb->asoc.primary_destination, sctp_next);
4182 sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
4185 struct sctpasochead *head;
4186 struct sctp_tcb *lstcb;
4188 SCTP_INP_WLOCK(inp);
4190 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
4192 SCTP_INP_WUNLOCK(inp);
4196 * We don't allow assoc id to be one of SCTP_FUTURE_ASSOC,
4197 * SCTP_CURRENT_ASSOC and SCTP_ALL_ASSOC.
4199 if (inp->sctp_associd_counter <= SCTP_ALL_ASSOC) {
4200 inp->sctp_associd_counter = SCTP_ALL_ASSOC + 1;
4202 id = inp->sctp_associd_counter;
4203 inp->sctp_associd_counter++;
4204 lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t) id, 0);
4208 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
4209 LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash);
4210 stcb->asoc.in_asocid_hash = 1;
4211 SCTP_INP_WUNLOCK(inp);
4216 * allocate an association and add it to the endpoint. The caller must be
4217 * careful to add all additional addresses once they are know right away or
4218 * else the assoc will be may experience a blackout scenario.
4221 sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
4222 int *error, uint32_t override_tag, uint32_t vrf_id,
4226 /* note the p argument is only valid in unbound sockets */
4228 struct sctp_tcb *stcb;
4229 struct sctp_association *asoc;
4230 struct sctpasochead *head;
4235 * Assumption made here: Caller has done a
4236 * sctp_findassociation_ep_addr(ep, addr's); to make sure the
4237 * address does not exist already.
4239 if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) {
4240 /* Hit max assoc, sorry no more */
4241 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4245 if (firstaddr == NULL) {
4246 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4250 SCTP_INP_RLOCK(inp);
4251 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
4252 ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) ||
4253 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4255 * If its in the TCP pool, its NOT allowed to create an
4256 * association. The parent listener needs to call
4257 * sctp_aloc_assoc.. or the one-2-many socket. If a peeled
4258 * off, or connected one does this.. its an error.
4260 SCTP_INP_RUNLOCK(inp);
4261 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4265 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
4266 (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)) {
4267 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) ||
4268 (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED)) {
4269 SCTP_INP_RUNLOCK(inp);
4270 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4275 SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:");
4278 SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr);
4279 switch (firstaddr->sa_family) {
4282 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4283 ntohs(((struct sockaddr_in *)firstaddr)->sin_port));
4288 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4289 ntohs(((struct sockaddr_in6 *)firstaddr)->sin6_port));
4296 SCTPDBG(SCTP_DEBUG_PCB3, "None\n");
4298 #endif /* SCTP_DEBUG */
4299 switch (firstaddr->sa_family) {
4303 struct sockaddr_in *sin;
4305 sin = (struct sockaddr_in *)firstaddr;
4306 if ((ntohs(sin->sin_port) == 0) ||
4307 (sin->sin_addr.s_addr == INADDR_ANY) ||
4308 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
4309 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
4310 /* Invalid address */
4311 SCTP_INP_RUNLOCK(inp);
4312 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4316 rport = sin->sin_port;
4323 struct sockaddr_in6 *sin6;
4325 sin6 = (struct sockaddr_in6 *)firstaddr;
4326 if ((ntohs(sin6->sin6_port) == 0) ||
4327 IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
4328 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
4329 /* Invalid address */
4330 SCTP_INP_RUNLOCK(inp);
4331 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4335 rport = sin6->sin6_port;
4340 /* not supported family type */
4341 SCTP_INP_RUNLOCK(inp);
4342 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4346 SCTP_INP_RUNLOCK(inp);
4347 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4349 * If you have not performed a bind, then we need to do the
4350 * ephemeral bind for you.
4352 if ((err = sctp_inpcb_bind(inp->sctp_socket,
4353 (struct sockaddr *)NULL,
4354 (struct sctp_ifa *)NULL,
4357 /* bind error, probably perm */
4362 stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb);
4364 /* out of memory? */
4365 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
4369 SCTP_INCR_ASOC_COUNT();
4371 bzero(stcb, sizeof(*stcb));
4374 asoc->assoc_id = sctp_aloc_a_assoc_id(inp, stcb);
4375 SCTP_TCB_LOCK_INIT(stcb);
4376 SCTP_TCB_SEND_LOCK_INIT(stcb);
4377 stcb->rport = rport;
4378 /* setup back pointer's */
4379 stcb->sctp_ep = inp;
4380 stcb->sctp_socket = inp->sctp_socket;
4381 if ((err = sctp_init_asoc(inp, stcb, override_tag, vrf_id))) {
4383 SCTP_TCB_LOCK_DESTROY(stcb);
4384 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4385 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4386 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4387 SCTP_DECR_ASOC_COUNT();
4392 SCTP_INP_INFO_WLOCK();
4393 SCTP_INP_WLOCK(inp);
4394 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
4395 /* inpcb freed while alloc going on */
4396 SCTP_TCB_LOCK_DESTROY(stcb);
4397 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4398 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4399 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4400 SCTP_INP_WUNLOCK(inp);
4401 SCTP_INP_INFO_WUNLOCK();
4402 SCTP_DECR_ASOC_COUNT();
4403 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4407 SCTP_TCB_LOCK(stcb);
4409 /* now that my_vtag is set, add it to the hash */
4410 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))];
4411 /* put it in the bucket in the vtag hash of assoc's for the system */
4412 LIST_INSERT_HEAD(head, stcb, sctp_asocs);
4413 SCTP_INP_INFO_WUNLOCK();
4415 if ((err = sctp_add_remote_addr(stcb, firstaddr, NULL, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC))) {
4416 /* failure.. memory error? */
4417 if (asoc->strmout) {
4418 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4419 asoc->strmout = NULL;
4421 if (asoc->mapping_array) {
4422 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4423 asoc->mapping_array = NULL;
4425 if (asoc->nr_mapping_array) {
4426 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4427 asoc->nr_mapping_array = NULL;
4429 SCTP_DECR_ASOC_COUNT();
4430 SCTP_TCB_LOCK_DESTROY(stcb);
4431 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4432 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4433 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4434 SCTP_INP_WUNLOCK(inp);
4435 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4439 /* Init all the timers */
4440 SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer);
4441 SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer);
4442 SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer);
4443 SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer);
4444 SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer);
4445 SCTP_OS_TIMER_INIT(&asoc->delayed_event_timer.timer);
4446 SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer);
4448 LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist);
4449 /* now file the port under the hash as well */
4450 if (inp->sctp_tcbhash != NULL) {
4451 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport,
4452 inp->sctp_hashmark)];
4453 LIST_INSERT_HEAD(head, stcb, sctp_tcbhash);
4455 SCTP_INP_WUNLOCK(inp);
4456 SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", stcb);
4462 sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
4464 struct sctp_association *asoc;
4468 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4469 if (net == asoc->primary_destination) {
4471 struct sctp_nets *lnet;
4473 lnet = TAILQ_FIRST(&asoc->nets);
4475 * Mobility adaptation Ideally, if deleted destination is
4476 * the primary, it becomes a fast retransmission trigger by
4477 * the subsequent SET PRIMARY. (by micchie)
4479 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
4480 SCTP_MOBILITY_BASE) ||
4481 sctp_is_mobility_feature_on(stcb->sctp_ep,
4482 SCTP_MOBILITY_FASTHANDOFF)) {
4483 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n");
4484 if (asoc->deleted_primary != NULL) {
4485 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n");
4488 asoc->deleted_primary = net;
4489 atomic_add_int(&net->ref_count, 1);
4490 memset(&net->lastsa, 0, sizeof(net->lastsa));
4491 memset(&net->lastsv, 0, sizeof(net->lastsv));
4492 sctp_mobility_feature_on(stcb->sctp_ep,
4493 SCTP_MOBILITY_PRIM_DELETED);
4494 sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED,
4495 stcb->sctp_ep, stcb, NULL);
4498 /* Try to find a confirmed primary */
4499 asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0);
4501 if (net == asoc->last_data_chunk_from) {
4503 asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets);
4505 if (net == asoc->last_control_chunk_from) {
4507 asoc->last_control_chunk_from = NULL;
4509 if (net == stcb->asoc.alternate) {
4510 sctp_free_remote_addr(stcb->asoc.alternate);
4511 stcb->asoc.alternate = NULL;
4513 sctp_free_remote_addr(net);
4517 * remove a remote endpoint address from an association, it will fail if the
4518 * address does not exist.
4521 sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
4524 * Here we need to remove a remote address. This is quite simple, we
4525 * first find it in the list of address for the association
4526 * (tasoc->asoc.nets) and then if it is there, we do a LIST_REMOVE
4527 * on that item. Note we do not allow it to be removed if there are
4528 * no other addresses.
4530 struct sctp_association *asoc;
4531 struct sctp_nets *net, *nnet;
4535 /* locate the address */
4536 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
4537 if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) {
4540 if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr,
4542 /* we found the guy */
4543 if (asoc->numnets < 2) {
4544 /* Must have at LEAST two remote addresses */
4547 sctp_remove_net(stcb, net);
4557 sctp_delete_from_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4559 struct sctpvtaghead *chain;
4560 struct sctp_tagblock *twait_block;
4564 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4565 if (!LIST_EMPTY(chain)) {
4566 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4567 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4568 if ((twait_block->vtag_block[i].v_tag == tag) &&
4569 (twait_block->vtag_block[i].lport == lport) &&
4570 (twait_block->vtag_block[i].rport == rport)) {
4571 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4572 twait_block->vtag_block[i].v_tag = 0;
4573 twait_block->vtag_block[i].lport = 0;
4574 twait_block->vtag_block[i].rport = 0;
4586 sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4588 struct sctpvtaghead *chain;
4589 struct sctp_tagblock *twait_block;
4593 SCTP_INP_INFO_WLOCK();
4594 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4595 if (!LIST_EMPTY(chain)) {
4596 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4597 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4598 if ((twait_block->vtag_block[i].v_tag == tag) &&
4599 (twait_block->vtag_block[i].lport == lport) &&
4600 (twait_block->vtag_block[i].rport == rport)) {
4609 SCTP_INP_INFO_WUNLOCK();
4615 sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport)
4617 struct sctpvtaghead *chain;
4618 struct sctp_tagblock *twait_block;
4626 (void)SCTP_GETTIME_TIMEVAL(&now);
4627 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4629 if (!LIST_EMPTY(chain)) {
4630 /* Block(s) present, lets find space, and expire on the fly */
4631 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4632 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4633 if ((twait_block->vtag_block[i].v_tag == 0) &&
4635 twait_block->vtag_block[i].tv_sec_at_expire =
4637 twait_block->vtag_block[i].v_tag = tag;
4638 twait_block->vtag_block[i].lport = lport;
4639 twait_block->vtag_block[i].rport = rport;
4641 } else if ((twait_block->vtag_block[i].v_tag) &&
4642 ((long)twait_block->vtag_block[i].tv_sec_at_expire < now.tv_sec)) {
4643 /* Audit expires this guy */
4644 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4645 twait_block->vtag_block[i].v_tag = 0;
4646 twait_block->vtag_block[i].lport = 0;
4647 twait_block->vtag_block[i].rport = 0;
4649 /* Reuse it for my new tag */
4650 twait_block->vtag_block[i].tv_sec_at_expire = now.tv_sec + time;
4651 twait_block->vtag_block[i].v_tag = tag;
4652 twait_block->vtag_block[i].lport = lport;
4653 twait_block->vtag_block[i].rport = rport;
4660 * We only do up to the block where we can
4661 * place our tag for audits
4667 /* Need to add a new block to chain */
4669 SCTP_MALLOC(twait_block, struct sctp_tagblock *,
4670 sizeof(struct sctp_tagblock), SCTP_M_TIMW);
4671 if (twait_block == NULL) {
4673 panic("Can not alloc tagblock");
4677 memset(twait_block, 0, sizeof(struct sctp_tagblock));
4678 LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock);
4679 twait_block->vtag_block[0].tv_sec_at_expire = now.tv_sec + time;
4680 twait_block->vtag_block[0].v_tag = tag;
4681 twait_block->vtag_block[0].lport = lport;
4682 twait_block->vtag_block[0].rport = rport;
4689 * Free the association after un-hashing the remote port. This
4690 * function ALWAYS returns holding NO LOCK on the stcb. It DOES
4691 * expect that the input to this function IS a locked TCB.
4692 * It will return 0, if it did NOT destroy the association (instead
4693 * it unlocks it. It will return NON-zero if it either destroyed the
4694 * association OR the association is already destroyed.
4697 sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
4700 struct sctp_association *asoc;
4701 struct sctp_nets *net, *nnet;
4702 struct sctp_laddr *laddr, *naddr;
4703 struct sctp_tmit_chunk *chk, *nchk;
4704 struct sctp_asconf_addr *aparam, *naparam;
4705 struct sctp_asconf_ack *aack, *naack;
4706 struct sctp_stream_reset_list *strrst, *nstrrst;
4707 struct sctp_queued_to_read *sq, *nsq;
4708 struct sctp_stream_queue_pending *sp, *nsp;
4709 sctp_sharedkey_t *shared_key, *nshared_key;
4712 /* first, lets purge the entry from the hash table. */
4714 #ifdef SCTP_LOG_CLOSING
4715 sctp_log_closing(inp, stcb, 6);
4717 if (stcb->asoc.state == 0) {
4718 #ifdef SCTP_LOG_CLOSING
4719 sctp_log_closing(inp, NULL, 7);
4721 /* there is no asoc, really TSNH :-0 */
4724 if (stcb->asoc.alternate) {
4725 sctp_free_remote_addr(stcb->asoc.alternate);
4726 stcb->asoc.alternate = NULL;
4729 if (stcb->freed_from_where == 0) {
4730 /* Only record the first place free happened from */
4731 stcb->freed_from_where = from_location;
4736 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4737 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4738 /* nothing around */
4741 so = inp->sctp_socket;
4744 * We used timer based freeing if a reader or writer is in the way.
4745 * So we first check if we are actually being called from a timer,
4746 * if so we abort early if a reader or writer is still in the way.
4748 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
4749 (from_inpcbfree == SCTP_NORMAL_PROC)) {
4751 * is it the timer driving us? if so are the reader/writers
4754 if (stcb->asoc.refcnt) {
4755 /* nope, reader or writer in the way */
4756 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4757 /* no asoc destroyed */
4758 SCTP_TCB_UNLOCK(stcb);
4759 #ifdef SCTP_LOG_CLOSING
4760 sctp_log_closing(inp, stcb, 8);
4765 /* now clean up any other timers */
4766 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4767 asoc->dack_timer.self = NULL;
4768 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4770 * For stream reset we don't blast this unless
4771 * it is a str-reset timer, it might be the
4772 * free-asoc timer which we DON'T want to
4775 if (asoc->strreset_timer.type == SCTP_TIMER_TYPE_STRRESET)
4776 asoc->strreset_timer.self = NULL;
4777 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4778 asoc->asconf_timer.self = NULL;
4779 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4780 asoc->autoclose_timer.self = NULL;
4781 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4782 asoc->shut_guard_timer.self = NULL;
4783 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4784 asoc->delayed_event_timer.self = NULL;
4785 /* Mobility adaptation */
4786 (void)SCTP_OS_TIMER_STOP(&asoc->delete_prim_timer.timer);
4787 asoc->delete_prim_timer.self = NULL;
4788 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4789 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4790 net->rxt_timer.self = NULL;
4791 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4792 net->pmtu_timer.self = NULL;
4793 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4794 net->hb_timer.self = NULL;
4796 /* Now the read queue needs to be cleaned up (only once) */
4797 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) {
4798 stcb->asoc.state |= SCTP_STATE_ABOUT_TO_BE_FREED;
4799 SCTP_INP_READ_LOCK(inp);
4800 TAILQ_FOREACH(sq, &inp->read_queue, next) {
4801 if (sq->stcb == stcb) {
4802 sq->do_not_ref_stcb = 1;
4803 sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
4805 * If there is no end, there never will be
4808 if (sq->end_added == 0) {
4809 /* Held for PD-API clear that. */
4810 sq->pdapi_aborted = 1;
4811 sq->held_length = 0;
4812 if (sctp_stcb_is_feature_on(inp, stcb, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) {
4814 * Need to add a PD-API
4815 * aborted indication.
4816 * Setting the control_pdapi
4817 * assures that it will be
4818 * added right after this
4823 stcb->asoc.control_pdapi = sq;
4824 strseq = (sq->sinfo_stream << 16) | sq->sinfo_ssn;
4825 sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION,
4827 SCTP_PARTIAL_DELIVERY_ABORTED,
4830 stcb->asoc.control_pdapi = NULL;
4833 /* Add an end to wake them */
4837 SCTP_INP_READ_UNLOCK(inp);
4838 if (stcb->block_entry) {
4839 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET);
4840 stcb->block_entry->error = ECONNRESET;
4841 stcb->block_entry = NULL;
4844 if ((stcb->asoc.refcnt) || (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE)) {
4846 * Someone holds a reference OR the socket is unaccepted
4849 if ((stcb->asoc.refcnt) ||
4850 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4851 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4852 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4853 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4855 SCTP_TCB_UNLOCK(stcb);
4856 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4857 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4858 /* nothing around */
4861 /* Wake any reader/writers */
4862 sctp_sorwakeup(inp, so);
4863 sctp_sowwakeup(inp, so);
4865 #ifdef SCTP_LOG_CLOSING
4866 sctp_log_closing(inp, stcb, 9);
4868 /* no asoc destroyed */
4871 #ifdef SCTP_LOG_CLOSING
4872 sctp_log_closing(inp, stcb, 10);
4875 * When I reach here, no others want to kill the assoc yet.. and I
4876 * own the lock. Now its possible an abort comes in when I do the
4877 * lock exchange below to grab all the locks to do the final take
4878 * out. to prevent this we increment the count, which will start a
4879 * timer and blow out above thus assuring us that we hold exclusive
4880 * killing of the asoc. Note that after getting back the TCB lock we
4881 * will go ahead and increment the counter back up and stop any
4882 * timer a passing stranger may have started :-S
4884 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4885 atomic_add_int(&stcb->asoc.refcnt, 1);
4887 SCTP_TCB_UNLOCK(stcb);
4888 SCTP_INP_INFO_WLOCK();
4889 SCTP_INP_WLOCK(inp);
4890 SCTP_TCB_LOCK(stcb);
4892 /* Double check the GONE flag */
4893 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4894 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4895 /* nothing around */
4898 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
4899 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4901 * For TCP type we need special handling when we are
4902 * connected. We also include the peel'ed off ones to.
4904 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4905 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED;
4906 inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED;
4909 if (so->so_rcv.sb_cc == 0) {
4910 so->so_state &= ~(SS_ISCONNECTING |
4911 SS_ISDISCONNECTING |
4915 socantrcvmore_locked(so);
4916 sctp_sowwakeup(inp, so);
4917 sctp_sorwakeup(inp, so);
4923 * Make it invalid too, that way if its about to run it will abort
4926 /* re-increment the lock */
4927 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4928 atomic_add_int(&stcb->asoc.refcnt, -1);
4930 if (stcb->asoc.refcnt) {
4931 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4932 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4933 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4934 SCTP_INP_INFO_WUNLOCK();
4935 SCTP_INP_WUNLOCK(inp);
4937 SCTP_TCB_UNLOCK(stcb);
4941 if (inp->sctp_tcbhash) {
4942 LIST_REMOVE(stcb, sctp_tcbhash);
4944 if (stcb->asoc.in_asocid_hash) {
4945 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4947 /* Now lets remove it from the list of ALL associations in the EP */
4948 LIST_REMOVE(stcb, sctp_tcblist);
4949 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4950 SCTP_INP_INCR_REF(inp);
4951 SCTP_INP_WUNLOCK(inp);
4953 /* pull from vtag hash */
4954 LIST_REMOVE(stcb, sctp_asocs);
4955 sctp_add_vtag_to_timewait(asoc->my_vtag, SCTP_BASE_SYSCTL(sctp_vtag_time_wait),
4956 inp->sctp_lport, stcb->rport);
4959 * Now restop the timers to be sure this is paranoia at is finest!
4961 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4962 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4963 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4964 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4965 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4966 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4967 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4968 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4969 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4970 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4971 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4974 asoc->strreset_timer.type = SCTP_TIMER_TYPE_NONE;
4976 * The chunk lists and such SHOULD be empty but we check them just
4979 /* anything on the wheel needs to be removed */
4980 for (i = 0; i < asoc->streamoutcnt; i++) {
4981 struct sctp_stream_out *outs;
4983 outs = &asoc->strmout[i];
4984 /* now clean up any chunks here */
4985 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
4986 TAILQ_REMOVE(&outs->outqueue, sp, next);
4989 /* Still an open socket - report */
4990 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
4991 0, (void *)sp, SCTP_SO_LOCKED);
4994 sctp_m_freem(sp->data);
4996 sp->tail_mbuf = NULL;
5000 sctp_free_remote_addr(sp->net);
5003 sctp_free_spbufspace(stcb, asoc, sp);
5004 if (sp->holds_key_ref)
5005 sctp_auth_key_release(stcb, sp->auth_keyid, SCTP_SO_LOCKED);
5006 /* Free the zone stuff */
5007 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_strmoq), sp);
5008 SCTP_DECR_STRMOQ_COUNT();
5009 /* sa_ignore FREED_MEMORY */
5012 /* sa_ignore FREED_MEMORY */
5013 TAILQ_FOREACH_SAFE(strrst, &asoc->resetHead, next_resp, nstrrst) {
5014 TAILQ_REMOVE(&asoc->resetHead, strrst, next_resp);
5015 SCTP_FREE(strrst, SCTP_M_STRESET);
5017 TAILQ_FOREACH_SAFE(sq, &asoc->pending_reply_queue, next, nsq) {
5018 TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
5020 sctp_m_freem(sq->data);
5023 sctp_free_remote_addr(sq->whoFrom);
5026 /* Free the ctl entry */
5027 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
5028 SCTP_DECR_READQ_COUNT();
5029 /* sa_ignore FREED_MEMORY */
5031 TAILQ_FOREACH_SAFE(chk, &asoc->free_chunks, sctp_next, nchk) {
5032 TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next);
5034 sctp_m_freem(chk->data);
5037 if (chk->holds_key_ref)
5038 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5039 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5040 SCTP_DECR_CHK_COUNT();
5041 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1);
5042 asoc->free_chunk_cnt--;
5043 /* sa_ignore FREED_MEMORY */
5045 /* pending send queue SHOULD be empty */
5046 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
5047 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
5050 /* Still a socket? */
5051 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
5052 0, chk, SCTP_SO_LOCKED);
5055 sctp_m_freem(chk->data);
5059 if (chk->holds_key_ref)
5060 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5062 sctp_free_remote_addr(chk->whoTo);
5065 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5066 SCTP_DECR_CHK_COUNT();
5067 /* sa_ignore FREED_MEMORY */
5069 /* sent queue SHOULD be empty */
5070 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
5071 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
5074 /* Still a socket? */
5075 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
5076 0, chk, SCTP_SO_LOCKED);
5079 sctp_m_freem(chk->data);
5083 if (chk->holds_key_ref)
5084 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5085 sctp_free_remote_addr(chk->whoTo);
5086 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5087 SCTP_DECR_CHK_COUNT();
5088 /* sa_ignore FREED_MEMORY */
5090 /* control queue MAY not be empty */
5091 TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) {
5092 TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next);
5094 sctp_m_freem(chk->data);
5097 if (chk->holds_key_ref)
5098 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5099 sctp_free_remote_addr(chk->whoTo);
5100 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5101 SCTP_DECR_CHK_COUNT();
5102 /* sa_ignore FREED_MEMORY */
5104 /* ASCONF queue MAY not be empty */
5105 TAILQ_FOREACH_SAFE(chk, &asoc->asconf_send_queue, sctp_next, nchk) {
5106 TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next);
5108 sctp_m_freem(chk->data);
5111 if (chk->holds_key_ref)
5112 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5113 sctp_free_remote_addr(chk->whoTo);
5114 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5115 SCTP_DECR_CHK_COUNT();
5116 /* sa_ignore FREED_MEMORY */
5118 TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) {
5119 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
5121 sctp_m_freem(chk->data);
5124 if (chk->holds_key_ref)
5125 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5126 sctp_free_remote_addr(chk->whoTo);
5127 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5128 SCTP_DECR_CHK_COUNT();
5129 /* sa_ignore FREED_MEMORY */
5132 if (asoc->mapping_array) {
5133 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
5134 asoc->mapping_array = NULL;
5136 if (asoc->nr_mapping_array) {
5137 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
5138 asoc->nr_mapping_array = NULL;
5140 /* the stream outs */
5141 if (asoc->strmout) {
5142 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
5143 asoc->strmout = NULL;
5145 asoc->strm_realoutsize = asoc->streamoutcnt = 0;
5147 struct sctp_queued_to_read *ctl, *nctl;
5149 for (i = 0; i < asoc->streamincnt; i++) {
5150 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[i].inqueue, next, nctl) {
5151 TAILQ_REMOVE(&asoc->strmin[i].inqueue, ctl, next);
5152 sctp_free_remote_addr(ctl->whoFrom);
5154 sctp_m_freem(ctl->data);
5158 * We don't free the address here since all
5159 * the net's were freed above.
5161 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
5162 SCTP_DECR_READQ_COUNT();
5165 SCTP_FREE(asoc->strmin, SCTP_M_STRMI);
5166 asoc->strmin = NULL;
5168 asoc->streamincnt = 0;
5169 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
5171 if (SCTP_BASE_INFO(ipi_count_raddr) == 0) {
5172 panic("no net's left alloc'ed, or list points to itself");
5175 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
5176 sctp_free_remote_addr(net);
5178 LIST_FOREACH_SAFE(laddr, &asoc->sctp_restricted_addrs, sctp_nxt_addr, naddr) {
5179 /* sa_ignore FREED_MEMORY */
5180 sctp_remove_laddr(laddr);
5183 /* pending asconf (address) parameters */
5184 TAILQ_FOREACH_SAFE(aparam, &asoc->asconf_queue, next, naparam) {
5185 /* sa_ignore FREED_MEMORY */
5186 TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
5187 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
5189 TAILQ_FOREACH_SAFE(aack, &asoc->asconf_ack_sent, next, naack) {
5190 /* sa_ignore FREED_MEMORY */
5191 TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
5192 if (aack->data != NULL) {
5193 sctp_m_freem(aack->data);
5195 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
5197 /* clean up auth stuff */
5198 if (asoc->local_hmacs)
5199 sctp_free_hmaclist(asoc->local_hmacs);
5200 if (asoc->peer_hmacs)
5201 sctp_free_hmaclist(asoc->peer_hmacs);
5203 if (asoc->local_auth_chunks)
5204 sctp_free_chunklist(asoc->local_auth_chunks);
5205 if (asoc->peer_auth_chunks)
5206 sctp_free_chunklist(asoc->peer_auth_chunks);
5208 sctp_free_authinfo(&asoc->authinfo);
5210 LIST_FOREACH_SAFE(shared_key, &asoc->shared_keys, next, nshared_key) {
5211 LIST_REMOVE(shared_key, next);
5212 sctp_free_sharedkey(shared_key);
5213 /* sa_ignore FREED_MEMORY */
5216 /* Insert new items here :> */
5218 /* Get rid of LOCK */
5219 SCTP_TCB_LOCK_DESTROY(stcb);
5220 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
5221 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5222 SCTP_INP_INFO_WUNLOCK();
5223 SCTP_INP_RLOCK(inp);
5225 #ifdef SCTP_TRACK_FREED_ASOCS
5226 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5227 /* now clean up the tasoc itself */
5228 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5229 SCTP_DECR_ASOC_COUNT();
5231 LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist);
5234 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5235 SCTP_DECR_ASOC_COUNT();
5237 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5238 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5240 * If its NOT the inp_free calling us AND sctp_close
5241 * as been called, we call back...
5243 SCTP_INP_RUNLOCK(inp);
5245 * This will start the kill timer (if we are the
5246 * last one) since we hold an increment yet. But
5247 * this is the only safe way to do this since
5248 * otherwise if the socket closes at the same time
5249 * we are here we might collide in the cleanup.
5251 sctp_inpcb_free(inp,
5252 SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
5253 SCTP_CALLED_DIRECTLY_NOCMPSET);
5254 SCTP_INP_DECR_REF(inp);
5257 /* The socket is still open. */
5258 SCTP_INP_DECR_REF(inp);
5261 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5262 SCTP_INP_RUNLOCK(inp);
5265 /* destroyed the asoc */
5266 #ifdef SCTP_LOG_CLOSING
5267 sctp_log_closing(inp, NULL, 11);
5275 * determine if a destination is "reachable" based upon the addresses bound
5276 * to the current endpoint (e.g. only v4 or v6 currently bound)
5279 * FIX: if we allow assoc-level bindx(), then this needs to be fixed to use
5280 * assoc level v4/v6 flags, as the assoc *may* not have the same address
5281 * types bound as its endpoint
5284 sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
5286 struct sctp_inpcb *inp;
5290 * No locks here, the TCB, in all cases is already locked and an
5291 * assoc is up. There is either a INP lock by the caller applied (in
5292 * asconf case when deleting an address) or NOT in the HB case,
5293 * however if HB then the INP increment is up and the INP will not
5294 * be removed (on top of the fact that we have a TCB lock). So we
5295 * only want to read the sctp_flags, which is either bound-all or
5296 * not.. no protection needed since once an assoc is up you can't be
5297 * changing your binding.
5299 inp = stcb->sctp_ep;
5300 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5301 /* if bound all, destination is not restricted */
5303 * RRS: Question during lock work: Is this correct? If you
5304 * are bound-all you still might need to obey the V4--V6
5305 * flags??? IMO this bound-all stuff needs to be removed!
5309 /* NOTE: all "scope" checks are done when local addresses are added */
5310 switch (destaddr->sa_family) {
5312 answer = inp->ip_inp.inp.inp_vflag & INP_IPV6;
5315 answer = inp->ip_inp.inp.inp_vflag & INP_IPV4;
5318 /* invalid family, so it's unreachable */
5326 * update the inp_vflags on an endpoint
5329 sctp_update_ep_vflag(struct sctp_inpcb *inp)
5331 struct sctp_laddr *laddr;
5333 /* first clear the flag */
5334 inp->ip_inp.inp.inp_vflag = 0;
5335 /* set the flag based on addresses on the ep list */
5336 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5337 if (laddr->ifa == NULL) {
5338 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
5342 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
5345 switch (laddr->ifa->address.sa.sa_family) {
5348 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5353 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5363 * Add the address to the endpoint local address list There is nothing to be
5364 * done if we are bound to all addresses
5367 sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
5369 struct sctp_laddr *laddr;
5374 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5375 /* You are already bound to all. You have it already */
5379 if (ifa->address.sa.sa_family == AF_INET6) {
5380 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5381 /* Can't bind a non-useable addr. */
5386 /* first, is it already present? */
5387 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5388 if (laddr->ifa == ifa) {
5395 /* Not in the ep list */
5396 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action);
5400 /* update inp_vflag flags */
5401 switch (ifa->address.sa.sa_family) {
5404 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5409 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
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 &&
5497 (net->ro._s_addr->ifa == laddr->ifa)) {
5498 /* Yep, purge src address selected */
5501 /* delete this address if cached */
5505 net->ro.ro_rt = NULL;
5507 sctp_free_ifa(net->ro._s_addr);
5508 net->ro._s_addr = NULL;
5509 net->src_addr_selected = 0;
5512 SCTP_TCB_UNLOCK(stcb);
5513 } /* for each tcb */
5514 /* remove it from the ep list */
5515 sctp_remove_laddr(laddr);
5517 /* update inp_vflag flags */
5518 sctp_update_ep_vflag(inp);
5524 * Add the address to the TCB local address restricted list.
5525 * This is a "pending" address list (eg. addresses waiting for an
5526 * ASCONF-ACK response) and cannot be used as a valid source address.
5529 sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5531 struct sctp_laddr *laddr;
5532 struct sctpladdr *list;
5535 * Assumes TCB is locked.. and possibly the INP. May need to
5536 * confirm/fix that if we need it and is not the case.
5538 list = &stcb->asoc.sctp_restricted_addrs;
5541 if (ifa->address.sa.sa_family == AF_INET6) {
5542 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5543 /* Can't bind a non-existent addr. */
5548 /* does the address already exist? */
5549 LIST_FOREACH(laddr, list, sctp_nxt_addr) {
5550 if (laddr->ifa == ifa) {
5555 /* add to the list */
5556 (void)sctp_insert_laddr(list, ifa, 0);
5561 * insert an laddr entry with the given ifa for the desired list
5564 sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
5566 struct sctp_laddr *laddr;
5568 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
5569 if (laddr == NULL) {
5570 /* out of memory? */
5571 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
5574 SCTP_INCR_LADDR_COUNT();
5575 bzero(laddr, sizeof(*laddr));
5576 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
5578 laddr->action = act;
5579 atomic_add_int(&ifa->refcount, 1);
5581 LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr);
5587 * Remove an laddr entry from the local address list (on an assoc)
5590 sctp_remove_laddr(struct sctp_laddr *laddr)
5593 /* remove from the list */
5594 LIST_REMOVE(laddr, sctp_nxt_addr);
5595 sctp_free_ifa(laddr->ifa);
5596 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr);
5597 SCTP_DECR_LADDR_COUNT();
5601 * Remove a local address from the TCB local address restricted list
5604 sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5606 struct sctp_inpcb *inp;
5607 struct sctp_laddr *laddr;
5610 * This is called by asconf work. It is assumed that a) The TCB is
5611 * locked and b) The INP is locked. This is true in as much as I can
5612 * trace through the entry asconf code where I did these locks.
5613 * Again, the ASCONF code is a bit different in that it does lock
5614 * the INP during its work often times. This must be since we don't
5615 * want other proc's looking up things while what they are looking
5616 * up is changing :-D
5619 inp = stcb->sctp_ep;
5620 /* if subset bound and don't allow ASCONF's, can't delete last */
5621 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
5622 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
5623 if (stcb->sctp_ep->laddr_count < 2) {
5624 /* can't delete last address */
5628 LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
5629 /* remove the address if it exists */
5630 if (laddr->ifa == NULL)
5632 if (laddr->ifa == ifa) {
5633 sctp_remove_laddr(laddr);
5638 /* address not found! */
5643 * Temporarily remove for __APPLE__ until we use the Tiger equivalents
5646 static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;
5647 static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR;
5651 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5652 struct sctp_mcore_ctrl *sctp_mcore_workers = NULL;
5653 int *sctp_cpuarry = NULL;
5655 sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use)
5657 /* Queue a packet to a processor for the specified core */
5658 struct sctp_mcore_queue *qent;
5659 struct sctp_mcore_ctrl *wkq;
5662 if (sctp_mcore_workers == NULL) {
5663 /* Something went way bad during setup */
5664 sctp_input_with_port(m, off, 0);
5667 SCTP_MALLOC(qent, struct sctp_mcore_queue *,
5668 (sizeof(struct sctp_mcore_queue)),
5671 /* This is trouble */
5672 sctp_input_with_port(m, off, 0);
5679 wkq = &sctp_mcore_workers[cpu_to_use];
5680 SCTP_MCORE_QLOCK(wkq);
5682 TAILQ_INSERT_TAIL(&wkq->que, qent, next);
5683 if (wkq->running == 0) {
5686 SCTP_MCORE_QUNLOCK(wkq);
5688 wakeup(&wkq->running);
5693 sctp_mcore_thread(void *arg)
5696 struct sctp_mcore_ctrl *wkq;
5697 struct sctp_mcore_queue *qent;
5699 wkq = (struct sctp_mcore_ctrl *)arg;
5703 /* Wait for first tickle */
5704 SCTP_MCORE_LOCK(wkq);
5706 msleep(&wkq->running,
5708 0, "wait for pkt", 0);
5709 SCTP_MCORE_UNLOCK(wkq);
5711 /* Bind to our cpu */
5712 thread_lock(curthread);
5713 sched_bind(curthread, wkq->cpuid);
5714 thread_unlock(curthread);
5716 /* Now lets start working */
5717 SCTP_MCORE_LOCK(wkq);
5718 /* Now grab lock and go */
5720 SCTP_MCORE_QLOCK(wkq);
5723 qent = TAILQ_FIRST(&wkq->que);
5725 TAILQ_REMOVE(&wkq->que, qent, next);
5726 SCTP_MCORE_QUNLOCK(wkq);
5727 CURVNET_SET(qent->vn);
5731 SCTP_FREE(qent, SCTP_M_MCORE);
5733 sctp_input_with_port(m, off, 0);
5735 SCTP_PRINTF("V6 not yet supported\n");
5739 SCTP_MCORE_QLOCK(wkq);
5742 if (!TAILQ_EMPTY(&wkq->que)) {
5745 SCTP_MCORE_QUNLOCK(wkq);
5746 msleep(&wkq->running,
5748 0, "wait for pkt", 0);
5753 sctp_startup_mcore_threads(void)
5760 if (sctp_mcore_workers != NULL) {
5762 * Already been here in some previous vnet?
5766 SCTP_MALLOC(sctp_mcore_workers, struct sctp_mcore_ctrl *,
5767 ((mp_maxid + 1) * sizeof(struct sctp_mcore_ctrl)),
5769 if (sctp_mcore_workers == NULL) {
5773 memset(sctp_mcore_workers, 0, ((mp_maxid + 1) *
5774 sizeof(struct sctp_mcore_ctrl)));
5775 /* Init the structures */
5776 for (i = 0; i <= mp_maxid; i++) {
5777 TAILQ_INIT(&sctp_mcore_workers[i].que);
5778 SCTP_MCORE_LOCK_INIT(&sctp_mcore_workers[i]);
5779 SCTP_MCORE_QLOCK_INIT(&sctp_mcore_workers[i]);
5780 sctp_mcore_workers[i].cpuid = i;
5782 if (sctp_cpuarry == NULL) {
5783 SCTP_MALLOC(sctp_cpuarry, int *,
5784 (mp_ncpus * sizeof(int)),
5788 sctp_cpuarry[i] = cpu;
5792 /* Now start them all */
5794 (void)kproc_create(sctp_mcore_thread,
5795 (void *)&sctp_mcore_workers[cpu],
5796 &sctp_mcore_workers[cpu].thread_proc,
5810 * SCTP initialization for the PCB structures should be called by
5811 * the sctp_init() funciton.
5816 if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) {
5817 /* error I was called twice */
5820 SCTP_BASE_VAR(sctp_pcb_initialized) = 1;
5822 #if defined(SCTP_LOCAL_TRACE_BUF)
5823 bzero(&SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));
5825 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5826 SCTP_MALLOC(SCTP_BASE_STATS, struct sctpstat *,
5827 ((mp_maxid + 1) * sizeof(struct sctpstat)),
5830 (void)SCTP_GETTIME_TIMEVAL(&tv);
5831 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5832 bzero(SCTP_BASE_STATS, (sizeof(struct sctpstat) * (mp_maxid + 1)));
5833 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t) tv.tv_sec;
5834 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t) tv.tv_usec;
5836 bzero(&SCTP_BASE_STATS, sizeof(struct sctpstat));
5837 SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t) tv.tv_sec;
5838 SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t) tv.tv_usec;
5840 /* init the empty list of (All) Endpoints */
5841 LIST_INIT(&SCTP_BASE_INFO(listhead));
5844 /* init the hash table of endpoints */
5845 TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize));
5846 TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize));
5847 TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale));
5848 SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31),
5849 &SCTP_BASE_INFO(hashasocmark));
5850 SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5851 &SCTP_BASE_INFO(hashmark));
5852 SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5853 &SCTP_BASE_INFO(hashtcpmark));
5854 SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize);
5857 SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH,
5858 &SCTP_BASE_INFO(hashvrfmark));
5860 SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE,
5861 &SCTP_BASE_INFO(vrf_ifn_hashmark));
5862 /* init the zones */
5864 * FIX ME: Should check for NULL returns, but if it does fail we are
5865 * doomed to panic anyways... add later maybe.
5867 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep",
5868 sizeof(struct sctp_inpcb), maxsockets);
5870 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc",
5871 sizeof(struct sctp_tcb), sctp_max_number_of_assoc);
5873 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr",
5874 sizeof(struct sctp_laddr),
5875 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5877 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr",
5878 sizeof(struct sctp_nets),
5879 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5881 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk",
5882 sizeof(struct sctp_tmit_chunk),
5883 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5885 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq",
5886 sizeof(struct sctp_queued_to_read),
5887 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5889 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out",
5890 sizeof(struct sctp_stream_queue_pending),
5891 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5893 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf",
5894 sizeof(struct sctp_asconf),
5895 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5897 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack",
5898 sizeof(struct sctp_asconf_ack),
5899 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5902 /* Master Lock INIT for info structure */
5903 SCTP_INP_INFO_LOCK_INIT();
5904 SCTP_STATLOG_INIT_LOCK();
5906 SCTP_IPI_COUNT_INIT();
5907 SCTP_IPI_ADDR_INIT();
5908 #ifdef SCTP_PACKET_LOGGING
5909 SCTP_IP_PKTLOG_INIT();
5911 LIST_INIT(&SCTP_BASE_INFO(addr_wq));
5913 SCTP_WQ_ADDR_INIT();
5914 /* not sure if we need all the counts */
5915 SCTP_BASE_INFO(ipi_count_ep) = 0;
5916 /* assoc/tcb zone info */
5917 SCTP_BASE_INFO(ipi_count_asoc) = 0;
5918 /* local addrlist zone info */
5919 SCTP_BASE_INFO(ipi_count_laddr) = 0;
5920 /* remote addrlist zone info */
5921 SCTP_BASE_INFO(ipi_count_raddr) = 0;
5923 SCTP_BASE_INFO(ipi_count_chunk) = 0;
5925 /* socket queue zone info */
5926 SCTP_BASE_INFO(ipi_count_readq) = 0;
5928 /* stream out queue cont */
5929 SCTP_BASE_INFO(ipi_count_strmoq) = 0;
5931 SCTP_BASE_INFO(ipi_free_strmoq) = 0;
5932 SCTP_BASE_INFO(ipi_free_chunks) = 0;
5934 SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer));
5936 /* Init the TIMEWAIT list */
5937 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5938 LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]);
5941 sctp_startup_iterator();
5943 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5944 sctp_startup_mcore_threads();
5948 * INIT the default VRF which for BSD is the only one, other O/S's
5949 * may have more. But initially they must start with one and then
5950 * add the VRF's as addresses are added.
5952 sctp_init_vrf_list(SCTP_DEFAULT_VRF);
5956 * Assumes that the SCTP_BASE_INFO() lock is NOT held.
5959 sctp_pcb_finish(void)
5961 struct sctp_vrflist *vrf_bucket;
5962 struct sctp_vrf *vrf, *nvrf;
5963 struct sctp_ifn *ifn, *nifn;
5964 struct sctp_ifa *ifa, *nifa;
5965 struct sctpvtaghead *chain;
5966 struct sctp_tagblock *twait_block, *prev_twait_block;
5967 struct sctp_laddr *wi, *nwi;
5971 * Free BSD the it thread never exits but we do clean up. The only
5972 * way freebsd reaches here if we have VRF's but we still add the
5973 * ifdef to make it compile on old versions.
5976 struct sctp_iterator *it, *nit;
5978 SCTP_IPI_ITERATOR_WQ_LOCK();
5979 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
5980 if (it->vn != curvnet) {
5983 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
5984 if (it->function_atend != NULL) {
5985 (*it->function_atend) (it->pointer, it->val);
5987 SCTP_FREE(it, SCTP_M_ITER);
5989 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5990 SCTP_ITERATOR_LOCK();
5991 if ((sctp_it_ctl.cur_it) &&
5992 (sctp_it_ctl.cur_it->vn == curvnet)) {
5993 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
5995 SCTP_ITERATOR_UNLOCK();
5998 SCTP_OS_TIMER_STOP(&SCTP_BASE_INFO(addr_wq_timer.timer));
5999 SCTP_WQ_ADDR_LOCK();
6000 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
6001 LIST_REMOVE(wi, sctp_nxt_addr);
6002 SCTP_DECR_LADDR_COUNT();
6003 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi);
6005 SCTP_WQ_ADDR_UNLOCK();
6008 * free the vrf/ifn/ifa lists and hashes (be sure address monitor is
6011 vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))];
6012 LIST_FOREACH_SAFE(vrf, vrf_bucket, next_vrf, nvrf) {
6013 LIST_FOREACH_SAFE(ifn, &vrf->ifnlist, next_ifn, nifn) {
6014 LIST_FOREACH_SAFE(ifa, &ifn->ifalist, next_ifa, nifa) {
6016 LIST_REMOVE(ifa, next_bucket);
6017 LIST_REMOVE(ifa, next_ifa);
6018 SCTP_FREE(ifa, SCTP_M_IFA);
6021 LIST_REMOVE(ifn, next_bucket);
6022 LIST_REMOVE(ifn, next_ifn);
6023 SCTP_FREE(ifn, SCTP_M_IFN);
6025 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
6027 LIST_REMOVE(vrf, next_vrf);
6028 SCTP_FREE(vrf, SCTP_M_VRF);
6030 /* free the vrf hashes */
6031 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark));
6032 SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark));
6035 * free the TIMEWAIT list elements malloc'd in the function
6036 * sctp_add_vtag_to_timewait()...
6038 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
6039 chain = &SCTP_BASE_INFO(vtag_timewait)[i];
6040 if (!LIST_EMPTY(chain)) {
6041 prev_twait_block = NULL;
6042 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6043 if (prev_twait_block) {
6044 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
6046 prev_twait_block = twait_block;
6048 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
6052 /* free the locks and mutexes */
6053 #ifdef SCTP_PACKET_LOGGING
6054 SCTP_IP_PKTLOG_DESTROY();
6056 SCTP_IPI_ADDR_DESTROY();
6057 SCTP_STATLOG_DESTROY();
6058 SCTP_INP_INFO_LOCK_DESTROY();
6060 SCTP_WQ_ADDR_DESTROY();
6062 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep));
6063 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc));
6064 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr));
6065 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net));
6066 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk));
6067 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq));
6068 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq));
6069 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf));
6070 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack));
6071 /* Get rid of other stuff to */
6072 if (SCTP_BASE_INFO(sctp_asochash) != NULL)
6073 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark));
6074 if (SCTP_BASE_INFO(sctp_ephash) != NULL)
6075 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark));
6076 if (SCTP_BASE_INFO(sctp_tcpephash) != NULL)
6077 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark));
6078 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
6079 SCTP_FREE(SCTP_BASE_STATS, SCTP_M_MCORE);
6085 sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m,
6086 int offset, int limit, struct sctphdr *sh,
6087 struct sockaddr *altsa)
6090 * grub through the INIT pulling addresses and loading them to the
6091 * nets structure in the asoc. The from address in the mbuf should
6092 * also be loaded (if it is not already). This routine can be called
6093 * with either INIT or INIT-ACK's as long as the m points to the IP
6094 * packet and the offset points to the beginning of the parameters.
6096 struct sctp_inpcb *inp;
6097 struct sctp_nets *net, *nnet, *net_tmp;
6099 struct sctp_paramhdr *phdr, parm_buf;
6100 struct sctp_tcb *stcb_tmp;
6101 uint16_t ptype, plen;
6102 struct sockaddr *sa;
6103 struct sockaddr_storage dest_store;
6104 struct sockaddr *local_sa = (struct sockaddr *)&dest_store;
6105 uint8_t random_store[SCTP_PARAM_BUFFER_SIZE];
6106 struct sctp_auth_random *p_random = NULL;
6107 uint16_t random_len = 0;
6108 uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE];
6109 struct sctp_auth_hmac_algo *hmacs = NULL;
6110 uint16_t hmacs_len = 0;
6111 uint8_t saw_asconf = 0;
6112 uint8_t saw_asconf_ack = 0;
6113 uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE];
6114 struct sctp_auth_chunk_list *chunks = NULL;
6115 uint16_t num_chunks = 0;
6116 sctp_key_t *new_key;
6118 int got_random = 0, got_hmacs = 0, got_chklist = 0;
6119 uint8_t ecn_allowed;
6122 struct sockaddr_in sin;
6126 struct sockaddr_in6 sin6;
6130 /* First get the destination address setup too. */
6132 memset(&sin, 0, sizeof(sin));
6133 sin.sin_family = AF_INET;
6134 sin.sin_len = sizeof(sin);
6135 sin.sin_port = stcb->rport;
6138 memset(&sin6, 0, sizeof(sin6));
6139 sin6.sin6_family = AF_INET6;
6140 sin6.sin6_len = sizeof(struct sockaddr_in6);
6141 sin6.sin6_port = stcb->rport;
6143 iph = mtod(m, struct ip *);
6144 switch (iph->ip_v) {
6149 struct sockaddr_in *sin_2;
6151 sin_2 = (struct sockaddr_in *)(local_sa);
6152 memset(sin_2, 0, sizeof(sin));
6153 sin_2->sin_family = AF_INET;
6154 sin_2->sin_len = sizeof(sin);
6155 sin_2->sin_port = sh->dest_port;
6156 sin_2->sin_addr.s_addr = iph->ip_dst.s_addr;
6159 * For cookies we use the src address NOT
6160 * from the packet but from the original
6165 sin.sin_addr = iph->ip_src;
6166 sa = (struct sockaddr *)&sin;
6172 case IPV6_VERSION >> 4:
6175 struct ip6_hdr *ip6;
6176 struct sockaddr_in6 *sin6_2;
6178 ip6 = mtod(m, struct ip6_hdr *);
6179 sin6_2 = (struct sockaddr_in6 *)(local_sa);
6180 memset(sin6_2, 0, sizeof(sin6));
6181 sin6_2->sin6_family = AF_INET6;
6182 sin6_2->sin6_len = sizeof(struct sockaddr_in6);
6183 sin6_2->sin6_port = sh->dest_port;
6184 sin6_2->sin6_addr = ip6->ip6_dst;
6187 * For cookies we use the src address NOT
6188 * from the packet but from the original
6193 sin6.sin6_addr = ip6->ip6_src;
6194 sa = (struct sockaddr *)&sin6;
6203 /* Turn off ECN until we get through all params */
6205 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
6206 /* mark all addresses that we have currently on the list */
6207 net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC;
6209 /* does the source address already exist? if so skip it */
6210 inp = stcb->sctp_ep;
6211 atomic_add_int(&stcb->asoc.refcnt, 1);
6212 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, local_sa, stcb);
6213 atomic_add_int(&stcb->asoc.refcnt, -1);
6215 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) {
6216 /* we must add the source address */
6217 /* no scope set here since we have a tcb already. */
6218 switch (sa->sa_family) {
6221 if (stcb->asoc.ipv4_addr_legal) {
6222 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) {
6230 if (stcb->asoc.ipv6_addr_legal) {
6231 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
6241 if (net_tmp != NULL && stcb_tmp == stcb) {
6242 net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC;
6243 } else if (stcb_tmp != stcb) {
6244 /* It belongs to another association? */
6246 SCTP_TCB_UNLOCK(stcb_tmp);
6250 if (stcb->asoc.state == 0) {
6251 /* the assoc was freed? */
6255 * peer must explicitly turn this on. This may have been initialized
6256 * to be "on" in order to allow local addr changes while INIT's are
6259 stcb->asoc.peer_supports_asconf = 0;
6260 /* now we must go through each of the params. */
6261 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
6263 ptype = ntohs(phdr->param_type);
6264 plen = ntohs(phdr->param_length);
6266 * SCTP_PRINTF("ptype => %0x, plen => %d\n",
6267 * (uint32_t)ptype, (int)plen);
6269 if (offset + plen > limit) {
6276 if (ptype == SCTP_IPV4_ADDRESS) {
6277 if (stcb->asoc.ipv4_addr_legal) {
6278 struct sctp_ipv4addr_param *p4, p4_buf;
6280 /* ok get the v4 address and check/add */
6281 phdr = sctp_get_next_param(m, offset,
6282 (struct sctp_paramhdr *)&p4_buf,
6284 if (plen != sizeof(struct sctp_ipv4addr_param) ||
6288 p4 = (struct sctp_ipv4addr_param *)phdr;
6289 sin.sin_addr.s_addr = p4->addr;
6290 if (IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) {
6291 /* Skip multi-cast addresses */
6294 if ((sin.sin_addr.s_addr == INADDR_BROADCAST) ||
6295 (sin.sin_addr.s_addr == INADDR_ANY)) {
6298 sa = (struct sockaddr *)&sin;
6299 inp = stcb->sctp_ep;
6300 atomic_add_int(&stcb->asoc.refcnt, 1);
6301 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6303 atomic_add_int(&stcb->asoc.refcnt, -1);
6305 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) ||
6307 /* we must add the source address */
6309 * no scope set since we have a tcb
6314 * we must validate the state again
6318 if (stcb->asoc.state == 0) {
6319 /* the assoc was freed? */
6322 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) {
6325 } else if (stcb_tmp == stcb) {
6326 if (stcb->asoc.state == 0) {
6327 /* the assoc was freed? */
6333 ~SCTP_ADDR_NOT_IN_ASSOC;
6337 * strange, address is in another
6338 * assoc? straighten out locks.
6341 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6346 sctp_abort_an_association(stcb_tmp->sctp_ep,
6347 stcb_tmp, NULL, SCTP_SO_NOT_LOCKED);
6350 SCTP_TCB_UNLOCK(stcb_tmp);
6352 if (stcb->asoc.state == 0) {
6353 /* the assoc was freed? */
6362 if (ptype == SCTP_IPV6_ADDRESS) {
6363 if (stcb->asoc.ipv6_addr_legal) {
6364 /* ok get the v6 address and check/add */
6365 struct sctp_ipv6addr_param *p6, p6_buf;
6367 phdr = sctp_get_next_param(m, offset,
6368 (struct sctp_paramhdr *)&p6_buf,
6370 if (plen != sizeof(struct sctp_ipv6addr_param) ||
6374 p6 = (struct sctp_ipv6addr_param *)phdr;
6375 memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
6377 if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) {
6378 /* Skip multi-cast addresses */
6381 if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) {
6383 * Link local make no sense without
6388 sa = (struct sockaddr *)&sin6;
6389 inp = stcb->sctp_ep;
6390 atomic_add_int(&stcb->asoc.refcnt, 1);
6391 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6393 atomic_add_int(&stcb->asoc.refcnt, -1);
6394 if (stcb_tmp == NULL &&
6395 (inp == stcb->sctp_ep || inp == NULL)) {
6397 * we must validate the state again
6401 if (stcb->asoc.state == 0) {
6402 /* the assoc was freed? */
6406 * we must add the address, no scope
6409 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) {
6412 } else if (stcb_tmp == stcb) {
6414 * we must validate the state again
6417 if (stcb->asoc.state == 0) {
6418 /* the assoc was freed? */
6424 ~SCTP_ADDR_NOT_IN_ASSOC;
6428 * strange, address is in another
6429 * assoc? straighten out locks.
6432 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6437 sctp_abort_an_association(stcb_tmp->sctp_ep,
6438 stcb_tmp, NULL, SCTP_SO_NOT_LOCKED);
6441 SCTP_TCB_UNLOCK(stcb_tmp);
6443 if (stcb->asoc.state == 0) {
6444 /* the assoc was freed? */
6452 if (ptype == SCTP_ECN_CAPABLE) {
6454 } else if (ptype == SCTP_ULP_ADAPTATION) {
6455 if (stcb->asoc.state != SCTP_STATE_OPEN) {
6456 struct sctp_adaptation_layer_indication ai,
6459 phdr = sctp_get_next_param(m, offset,
6460 (struct sctp_paramhdr *)&ai, sizeof(ai));
6461 aip = (struct sctp_adaptation_layer_indication *)phdr;
6463 stcb->asoc.peers_adaptation = ntohl(aip->indication);
6464 stcb->asoc.adaptation_needed = 1;
6467 } else if (ptype == SCTP_SET_PRIM_ADDR) {
6468 struct sctp_asconf_addr_param lstore, *fee;
6470 struct sockaddr *lsa = NULL;
6473 struct sctp_asconf_addrv4_param *fii;
6477 stcb->asoc.peer_supports_asconf = 1;
6478 if (plen > sizeof(lstore)) {
6481 phdr = sctp_get_next_param(m, offset,
6482 (struct sctp_paramhdr *)&lstore,
6483 min(plen, sizeof(lstore)));
6487 fee = (struct sctp_asconf_addr_param *)phdr;
6488 lptype = ntohs(fee->addrp.ph.param_type);
6491 case SCTP_IPV4_ADDRESS:
6493 sizeof(struct sctp_asconf_addrv4_param)) {
6494 SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n",
6495 (int)sizeof(struct sctp_asconf_addrv4_param),
6498 fii = (struct sctp_asconf_addrv4_param *)fee;
6499 sin.sin_addr.s_addr = fii->addrp.addr;
6500 lsa = (struct sockaddr *)&sin;
6505 case SCTP_IPV6_ADDRESS:
6507 sizeof(struct sctp_asconf_addr_param)) {
6508 SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n",
6509 (int)sizeof(struct sctp_asconf_addr_param),
6512 memcpy(sin6.sin6_addr.s6_addr,
6514 sizeof(fee->addrp.addr));
6515 lsa = (struct sockaddr *)&sin6;
6523 (void)sctp_set_primary_addr(stcb, sa, NULL);
6525 } else if (ptype == SCTP_HAS_NAT_SUPPORT) {
6526 stcb->asoc.peer_supports_nat = 1;
6527 } else if (ptype == SCTP_PRSCTP_SUPPORTED) {
6528 /* Peer supports pr-sctp */
6529 stcb->asoc.peer_supports_prsctp = 1;
6530 } else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) {
6531 /* A supported extension chunk */
6532 struct sctp_supported_chunk_types_param *pr_supported;
6533 uint8_t local_store[SCTP_PARAM_BUFFER_SIZE];
6536 phdr = sctp_get_next_param(m, offset,
6537 (struct sctp_paramhdr *)&local_store, min(sizeof(local_store), plen));
6541 stcb->asoc.peer_supports_asconf = 0;
6542 stcb->asoc.peer_supports_prsctp = 0;
6543 stcb->asoc.peer_supports_pktdrop = 0;
6544 stcb->asoc.peer_supports_strreset = 0;
6545 stcb->asoc.peer_supports_nr_sack = 0;
6546 stcb->asoc.peer_supports_auth = 0;
6547 pr_supported = (struct sctp_supported_chunk_types_param *)phdr;
6548 num_ent = plen - sizeof(struct sctp_paramhdr);
6549 for (i = 0; i < num_ent; i++) {
6550 switch (pr_supported->chunk_types[i]) {
6552 case SCTP_ASCONF_ACK:
6553 stcb->asoc.peer_supports_asconf = 1;
6555 case SCTP_FORWARD_CUM_TSN:
6556 stcb->asoc.peer_supports_prsctp = 1;
6558 case SCTP_PACKET_DROPPED:
6559 stcb->asoc.peer_supports_pktdrop = 1;
6561 case SCTP_NR_SELECTIVE_ACK:
6562 stcb->asoc.peer_supports_nr_sack = 1;
6564 case SCTP_STREAM_RESET:
6565 stcb->asoc.peer_supports_strreset = 1;
6567 case SCTP_AUTHENTICATION:
6568 stcb->asoc.peer_supports_auth = 1;
6571 /* one I have not learned yet */
6576 } else if (ptype == SCTP_RANDOM) {
6577 if (plen > sizeof(random_store))
6580 /* already processed a RANDOM */
6583 phdr = sctp_get_next_param(m, offset,
6584 (struct sctp_paramhdr *)random_store,
6585 min(sizeof(random_store), plen));
6588 p_random = (struct sctp_auth_random *)phdr;
6589 random_len = plen - sizeof(*p_random);
6590 /* enforce the random length */
6591 if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) {
6592 SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n");
6596 } else if (ptype == SCTP_HMAC_LIST) {
6600 if (plen > sizeof(hmacs_store))
6603 /* already processed a HMAC list */
6606 phdr = sctp_get_next_param(m, offset,
6607 (struct sctp_paramhdr *)hmacs_store,
6608 min(plen, sizeof(hmacs_store)));
6611 hmacs = (struct sctp_auth_hmac_algo *)phdr;
6612 hmacs_len = plen - sizeof(*hmacs);
6613 num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]);
6614 /* validate the hmac list */
6615 if (sctp_verify_hmac_param(hmacs, num_hmacs)) {
6618 if (stcb->asoc.peer_hmacs != NULL)
6619 sctp_free_hmaclist(stcb->asoc.peer_hmacs);
6620 stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs);
6621 if (stcb->asoc.peer_hmacs != NULL) {
6622 for (i = 0; i < num_hmacs; i++) {
6623 (void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs,
6624 ntohs(hmacs->hmac_ids[i]));
6628 } else if (ptype == SCTP_CHUNK_LIST) {
6631 if (plen > sizeof(chunks_store))
6634 /* already processed a Chunks list */
6637 phdr = sctp_get_next_param(m, offset,
6638 (struct sctp_paramhdr *)chunks_store,
6639 min(plen, sizeof(chunks_store)));
6642 chunks = (struct sctp_auth_chunk_list *)phdr;
6643 num_chunks = plen - sizeof(*chunks);
6644 if (stcb->asoc.peer_auth_chunks != NULL)
6645 sctp_clear_chunklist(stcb->asoc.peer_auth_chunks);
6647 stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist();
6648 for (i = 0; i < num_chunks; i++) {
6649 (void)sctp_auth_add_chunk(chunks->chunk_types[i],
6650 stcb->asoc.peer_auth_chunks);
6651 /* record asconf/asconf-ack if listed */
6652 if (chunks->chunk_types[i] == SCTP_ASCONF)
6654 if (chunks->chunk_types[i] == SCTP_ASCONF_ACK)
6659 } else if ((ptype == SCTP_HEARTBEAT_INFO) ||
6660 (ptype == SCTP_STATE_COOKIE) ||
6661 (ptype == SCTP_UNRECOG_PARAM) ||
6662 (ptype == SCTP_COOKIE_PRESERVE) ||
6663 (ptype == SCTP_SUPPORTED_ADDRTYPE) ||
6664 (ptype == SCTP_ADD_IP_ADDRESS) ||
6665 (ptype == SCTP_DEL_IP_ADDRESS) ||
6666 (ptype == SCTP_ERROR_CAUSE_IND) ||
6667 (ptype == SCTP_SUCCESS_REPORT)) {
6670 if ((ptype & 0x8000) == 0x0000) {
6672 * must stop processing the rest of the
6673 * param's. Any report bits were handled
6675 * sctp_arethere_unrecognized_parameters()
6676 * when the INIT or INIT-ACK was first seen.
6683 offset += SCTP_SIZE32(plen);
6684 if (offset >= limit) {
6687 phdr = sctp_get_next_param(m, offset, &parm_buf,
6690 /* Now check to see if we need to purge any addresses */
6691 TAILQ_FOREACH_SAFE(net, &stcb->asoc.nets, sctp_next, nnet) {
6692 if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) ==
6693 SCTP_ADDR_NOT_IN_ASSOC) {
6694 /* This address has been removed from the asoc */
6695 /* remove and free it */
6696 stcb->asoc.numnets--;
6697 TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next);
6698 sctp_free_remote_addr(net);
6699 if (net == stcb->asoc.primary_destination) {
6700 stcb->asoc.primary_destination = NULL;
6701 sctp_select_primary_destination(stcb);
6705 if (ecn_allowed == 0) {
6706 stcb->asoc.ecn_allowed = 0;
6708 /* validate authentication required parameters */
6709 if (got_random && got_hmacs) {
6710 stcb->asoc.peer_supports_auth = 1;
6712 stcb->asoc.peer_supports_auth = 0;
6714 if (!stcb->asoc.peer_supports_auth && got_chklist) {
6715 /* peer does not support auth but sent a chunks list? */
6718 if (!SCTP_BASE_SYSCTL(sctp_asconf_auth_nochk) && stcb->asoc.peer_supports_asconf &&
6719 !stcb->asoc.peer_supports_auth) {
6720 /* peer supports asconf but not auth? */
6722 } else if ((stcb->asoc.peer_supports_asconf) && (stcb->asoc.peer_supports_auth) &&
6723 ((saw_asconf == 0) || (saw_asconf_ack == 0))) {
6726 /* concatenate the full random key */
6727 keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len;
6728 if (chunks != NULL) {
6729 keylen += sizeof(*chunks) + num_chunks;
6731 new_key = sctp_alloc_key(keylen);
6732 if (new_key != NULL) {
6733 /* copy in the RANDOM */
6734 if (p_random != NULL) {
6735 keylen = sizeof(*p_random) + random_len;
6736 bcopy(p_random, new_key->key, keylen);
6738 /* append in the AUTH chunks */
6739 if (chunks != NULL) {
6740 bcopy(chunks, new_key->key + keylen,
6741 sizeof(*chunks) + num_chunks);
6742 keylen += sizeof(*chunks) + num_chunks;
6744 /* append in the HMACs */
6745 if (hmacs != NULL) {
6746 bcopy(hmacs, new_key->key + keylen,
6747 sizeof(*hmacs) + hmacs_len);
6750 /* failed to get memory for the key */
6753 if (stcb->asoc.authinfo.peer_random != NULL)
6754 sctp_free_key(stcb->asoc.authinfo.peer_random);
6755 stcb->asoc.authinfo.peer_random = new_key;
6756 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid);
6757 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid);
6763 sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa,
6764 struct sctp_nets *net)
6766 /* make sure the requested primary address exists in the assoc */
6767 if (net == NULL && sa)
6768 net = sctp_findnet(stcb, sa);
6771 /* didn't find the requested primary address! */
6774 /* set the primary address */
6775 if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
6776 /* Must be confirmed, so queue to set */
6777 net->dest_state |= SCTP_ADDR_REQ_PRIMARY;
6780 stcb->asoc.primary_destination = net;
6781 if (!(net->dest_state & SCTP_ADDR_PF) && (stcb->asoc.alternate)) {
6782 sctp_free_remote_addr(stcb->asoc.alternate);
6783 stcb->asoc.alternate = NULL;
6785 net = TAILQ_FIRST(&stcb->asoc.nets);
6786 if (net != stcb->asoc.primary_destination) {
6788 * first one on the list is NOT the primary
6789 * sctp_cmpaddr() is much more efficient if the
6790 * primary is the first on the list, make it so.
6792 TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6793 TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6800 sctp_is_vtag_good(uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now)
6803 * This function serves two purposes. It will see if a TAG can be
6804 * re-used and return 1 for yes it is ok and 0 for don't use that
6805 * tag. A secondary function it will do is purge out old tags that
6808 struct sctpvtaghead *chain;
6809 struct sctp_tagblock *twait_block;
6810 struct sctpasochead *head;
6811 struct sctp_tcb *stcb;
6814 SCTP_INP_INFO_RLOCK();
6815 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag,
6816 SCTP_BASE_INFO(hashasocmark))];
6819 goto skip_vtag_check;
6821 LIST_FOREACH(stcb, head, sctp_asocs) {
6823 * We choose not to lock anything here. TCB's can't be
6824 * removed since we have the read lock, so they can't be
6825 * freed on us, same thing for the INP. I may be wrong with
6826 * this assumption, but we will go with it for now :-)
6828 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
6831 if (stcb->asoc.my_vtag == tag) {
6833 if (stcb->rport != rport) {
6836 if (stcb->sctp_ep->sctp_lport != lport) {
6839 /* Its a used tag set */
6840 SCTP_INP_INFO_RUNLOCK();
6846 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
6847 /* Now what about timed wait ? */
6848 if (!LIST_EMPTY(chain)) {
6850 * Block(s) are present, lets see if we have this tag in the
6853 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6854 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
6855 if (twait_block->vtag_block[i].v_tag == 0) {
6858 } else if ((long)twait_block->vtag_block[i].tv_sec_at_expire <
6860 /* Audit expires this guy */
6861 twait_block->vtag_block[i].tv_sec_at_expire = 0;
6862 twait_block->vtag_block[i].v_tag = 0;
6863 twait_block->vtag_block[i].lport = 0;
6864 twait_block->vtag_block[i].rport = 0;
6865 } else if ((twait_block->vtag_block[i].v_tag == tag) &&
6866 (twait_block->vtag_block[i].lport == lport) &&
6867 (twait_block->vtag_block[i].rport == rport)) {
6868 /* Bad tag, sorry :< */
6869 SCTP_INP_INFO_RUNLOCK();
6875 SCTP_INP_INFO_RUNLOCK();
6880 sctp_drain_mbufs(struct sctp_tcb *stcb)
6883 * We must hunt this association for MBUF's past the cumack (i.e.
6884 * out of order data that we can renege on).
6886 struct sctp_association *asoc;
6887 struct sctp_tmit_chunk *chk, *nchk;
6888 uint32_t cumulative_tsn_p1;
6889 struct sctp_queued_to_read *ctl, *nctl;
6894 /* We look for anything larger than the cum-ack + 1 */
6897 if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) {
6898 /* none we can reneg on. */
6901 SCTP_STAT_INCR(sctps_protocol_drains_done);
6902 cumulative_tsn_p1 = asoc->cumulative_tsn + 1;
6904 /* First look in the re-assembly queue */
6905 TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) {
6906 if (SCTP_TSN_GT(chk->rec.data.TSN_seq, cumulative_tsn_p1)) {
6907 /* Yep it is above cum-ack */
6909 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.TSN_seq, asoc->mapping_array_base_tsn);
6910 asoc->size_on_reasm_queue = sctp_sbspace_sub(asoc->size_on_reasm_queue, chk->send_size);
6911 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6912 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6913 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
6915 sctp_m_freem(chk->data);
6918 sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
6921 /* Ok that was fun, now we will drain all the inbound streams? */
6922 for (strmat = 0; strmat < asoc->streamincnt; strmat++) {
6923 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[strmat].inqueue, next, nctl) {
6924 if (SCTP_TSN_GT(ctl->sinfo_tsn, cumulative_tsn_p1)) {
6925 /* Yep it is above cum-ack */
6927 SCTP_CALC_TSN_TO_GAP(gap, ctl->sinfo_tsn, asoc->mapping_array_base_tsn);
6928 asoc->size_on_all_streams = sctp_sbspace_sub(asoc->size_on_all_streams, ctl->length);
6929 sctp_ucount_decr(asoc->cnt_on_all_streams);
6930 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6931 TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, ctl, next);
6933 sctp_m_freem(ctl->data);
6936 sctp_free_remote_addr(ctl->whoFrom);
6937 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
6938 SCTP_DECR_READQ_COUNT();
6943 /* We must back down to see what the new highest is */
6944 for (i = asoc->highest_tsn_inside_map; SCTP_TSN_GE(i, asoc->mapping_array_base_tsn); i--) {
6945 SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn);
6946 if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) {
6947 asoc->highest_tsn_inside_map = i;
6953 asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1;
6956 * Question, should we go through the delivery queue? The
6957 * only reason things are on here is the app not reading OR
6958 * a p-d-api up. An attacker COULD send enough in to
6959 * initiate the PD-API and then send a bunch of stuff to
6960 * other streams... these would wind up on the delivery
6961 * queue.. and then we would not get to them. But in order
6962 * to do this I then have to back-track and un-deliver
6963 * sequence numbers in streams.. el-yucko. I think for now
6964 * we will NOT look at the delivery queue and leave it to be
6965 * something to consider later. An alternative would be to
6966 * abort the P-D-API with a notification and then deliver
6967 * the data.... Or another method might be to keep track of
6968 * how many times the situation occurs and if we see a
6969 * possible attack underway just abort the association.
6972 SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt);
6975 * Now do we need to find a new
6976 * asoc->highest_tsn_inside_map?
6978 asoc->last_revoke_count = cnt;
6979 (void)SCTP_OS_TIMER_STOP(&stcb->asoc.dack_timer.timer);
6980 /* sa_ignore NO_NULL_CHK */
6981 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
6982 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED);
6985 * Another issue, in un-setting the TSN's in the mapping array we
6986 * DID NOT adjust the highest_tsn marker. This will cause one of
6987 * two things to occur. It may cause us to do extra work in checking
6988 * for our mapping array movement. More importantly it may cause us
6989 * to SACK every datagram. This may not be a bad thing though since
6990 * we will recover once we get our cum-ack above and all this stuff
6991 * we dumped recovered.
6999 * We must walk the PCB lists for ALL associations here. The system
7000 * is LOW on MBUF's and needs help. This is where reneging will
7001 * occur. We really hope this does NOT happen!
7003 VNET_ITERATOR_DECL(vnet_iter);
7004 VNET_LIST_RLOCK_NOSLEEP();
7005 VNET_FOREACH(vnet_iter) {
7006 CURVNET_SET(vnet_iter);
7007 struct sctp_inpcb *inp;
7008 struct sctp_tcb *stcb;
7010 SCTP_STAT_INCR(sctps_protocol_drain_calls);
7011 if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
7018 SCTP_INP_INFO_RLOCK();
7019 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
7020 /* For each endpoint */
7021 SCTP_INP_RLOCK(inp);
7022 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
7023 /* For each association */
7024 SCTP_TCB_LOCK(stcb);
7025 sctp_drain_mbufs(stcb);
7026 SCTP_TCB_UNLOCK(stcb);
7028 SCTP_INP_RUNLOCK(inp);
7030 SCTP_INP_INFO_RUNLOCK();
7033 VNET_LIST_RUNLOCK_NOSLEEP();
7037 * start a new iterator
7038 * iterates through all endpoints and associations based on the pcb_state
7039 * flags and asoc_state. "af" (mandatory) is executed for all matching
7040 * assocs and "ef" (optional) is executed when the iterator completes.
7041 * "inpf" (optional) is executed for each new endpoint as it is being
7042 * iterated through. inpe (optional) is called when the inp completes
7043 * its way through all the stcbs.
7046 sctp_initiate_iterator(inp_func inpf,
7050 uint32_t pcb_features,
7051 uint32_t asoc_state,
7055 struct sctp_inpcb *s_inp,
7056 uint8_t chunk_output_off)
7058 struct sctp_iterator *it = NULL;
7063 SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator),
7066 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
7069 memset(it, 0, sizeof(*it));
7070 it->function_assoc = af;
7071 it->function_inp = inpf;
7073 it->done_current_ep = 0;
7075 it->done_current_ep = 1;
7076 it->function_atend = ef;
7079 it->pcb_flags = pcb_state;
7080 it->pcb_features = pcb_features;
7081 it->asoc_state = asoc_state;
7082 it->function_inp_end = inpe;
7083 it->no_chunk_output = chunk_output_off;
7086 /* Assume lock is held here */
7088 SCTP_INP_INCR_REF(it->inp);
7089 it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP;
7091 SCTP_INP_INFO_RLOCK();
7092 it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead));
7094 SCTP_INP_INCR_REF(it->inp);
7096 SCTP_INP_INFO_RUNLOCK();
7097 it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP;
7100 SCTP_IPI_ITERATOR_WQ_LOCK();
7102 TAILQ_INSERT_TAIL(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
7103 if (sctp_it_ctl.iterator_running == 0) {
7104 sctp_wakeup_iterator();
7106 SCTP_IPI_ITERATOR_WQ_UNLOCK();
7107 /* sa_ignore MEMLEAK {memory is put on the tailq for the iterator} */