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 (void *)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 (void *)sctp_ifnp, (void *)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", (void *)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 switch (remote->sa_family) {
1209 rport = (((struct sockaddr_in *)remote)->sin_port);
1214 rport = (((struct sockaddr_in6 *)remote)->sin6_port);
1222 * UN-lock so we can do proper locking here this occurs when
1223 * called from load_addresses_from_init.
1225 atomic_add_int(&locked_tcb->asoc.refcnt, 1);
1226 SCTP_TCB_UNLOCK(locked_tcb);
1228 SCTP_INP_INFO_RLOCK();
1229 if (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
1231 * Now either this guy is our listener or it's the
1232 * connector. If it is the one that issued the connect, then
1233 * it's only chance is to be the first TCB in the list. If
1234 * it is the acceptor, then do the special_lookup to hash
1235 * and find the real inp.
1237 if ((inp->sctp_socket) && (inp->sctp_socket->so_qlimit)) {
1238 /* to is peer addr, from is my addr */
1239 stcb = sctp_tcb_special_locate(inp_p, remote, local,
1240 netp, inp->def_vrf_id);
1241 if ((stcb != NULL) && (locked_tcb == NULL)) {
1242 /* we have a locked tcb, lower refcount */
1243 SCTP_INP_DECR_REF(inp);
1245 if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
1246 SCTP_INP_RLOCK(locked_tcb->sctp_ep);
1247 SCTP_TCB_LOCK(locked_tcb);
1248 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1249 SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
1251 SCTP_INP_INFO_RUNLOCK();
1254 SCTP_INP_WLOCK(inp);
1255 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1258 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1262 SCTP_TCB_LOCK(stcb);
1264 if (stcb->rport != rport) {
1265 /* remote port does not match. */
1266 SCTP_TCB_UNLOCK(stcb);
1269 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1270 SCTP_TCB_UNLOCK(stcb);
1273 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1274 SCTP_TCB_UNLOCK(stcb);
1277 /* now look at the list of remote addresses */
1278 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1280 if (net == (TAILQ_NEXT(net, sctp_next))) {
1281 panic("Corrupt net list");
1284 if (net->ro._l_addr.sa.sa_family !=
1285 remote->sa_family) {
1286 /* not the same family */
1289 switch (remote->sa_family) {
1293 struct sockaddr_in *sin,
1296 sin = (struct sockaddr_in *)
1298 rsin = (struct sockaddr_in *)remote;
1299 if (sin->sin_addr.s_addr ==
1300 rsin->sin_addr.s_addr) {
1305 if (locked_tcb == NULL) {
1306 SCTP_INP_DECR_REF(inp);
1307 } else if (locked_tcb != stcb) {
1308 SCTP_TCB_LOCK(locked_tcb);
1311 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1313 SCTP_INP_WUNLOCK(inp);
1314 SCTP_INP_INFO_RUNLOCK();
1323 struct sockaddr_in6 *sin6,
1326 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1327 rsin6 = (struct sockaddr_in6 *)remote;
1328 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1334 if (locked_tcb == NULL) {
1335 SCTP_INP_DECR_REF(inp);
1336 } else if (locked_tcb != stcb) {
1337 SCTP_TCB_LOCK(locked_tcb);
1340 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1342 SCTP_INP_WUNLOCK(inp);
1343 SCTP_INP_INFO_RUNLOCK();
1354 SCTP_TCB_UNLOCK(stcb);
1357 SCTP_INP_WLOCK(inp);
1358 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1361 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport,
1362 inp->sctp_hashmark)];
1366 LIST_FOREACH(stcb, head, sctp_tcbhash) {
1367 if (stcb->rport != rport) {
1368 /* remote port does not match */
1371 SCTP_TCB_LOCK(stcb);
1372 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1373 SCTP_TCB_UNLOCK(stcb);
1376 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1377 SCTP_TCB_UNLOCK(stcb);
1380 /* now look at the list of remote addresses */
1381 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1383 if (net == (TAILQ_NEXT(net, sctp_next))) {
1384 panic("Corrupt net list");
1387 if (net->ro._l_addr.sa.sa_family !=
1388 remote->sa_family) {
1389 /* not the same family */
1392 switch (remote->sa_family) {
1396 struct sockaddr_in *sin,
1399 sin = (struct sockaddr_in *)
1401 rsin = (struct sockaddr_in *)remote;
1402 if (sin->sin_addr.s_addr ==
1403 rsin->sin_addr.s_addr) {
1408 if (locked_tcb == NULL) {
1409 SCTP_INP_DECR_REF(inp);
1410 } else if (locked_tcb != stcb) {
1411 SCTP_TCB_LOCK(locked_tcb);
1414 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1416 SCTP_INP_WUNLOCK(inp);
1417 SCTP_INP_INFO_RUNLOCK();
1426 struct sockaddr_in6 *sin6,
1429 sin6 = (struct sockaddr_in6 *)
1431 rsin6 = (struct sockaddr_in6 *)remote;
1432 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1438 if (locked_tcb == NULL) {
1439 SCTP_INP_DECR_REF(inp);
1440 } else if (locked_tcb != stcb) {
1441 SCTP_TCB_LOCK(locked_tcb);
1444 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1446 SCTP_INP_WUNLOCK(inp);
1447 SCTP_INP_INFO_RUNLOCK();
1458 SCTP_TCB_UNLOCK(stcb);
1462 /* clean up for returning null */
1464 SCTP_TCB_LOCK(locked_tcb);
1465 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1467 SCTP_INP_WUNLOCK(inp);
1468 SCTP_INP_INFO_RUNLOCK();
1474 * Find an association for a specific endpoint using the association id given
1475 * out in the COMM_UP notification
1479 sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1482 * Use my the assoc_id to find a endpoint
1484 struct sctpasochead *head;
1485 struct sctp_tcb *stcb;
1489 SCTP_PRINTF("TSNH ep_associd\n");
1492 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1493 SCTP_PRINTF("TSNH ep_associd0\n");
1496 id = (uint32_t) asoc_id;
1497 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
1499 /* invalid id TSNH */
1500 SCTP_PRINTF("TSNH ep_associd1\n");
1503 LIST_FOREACH(stcb, head, sctp_tcbasocidhash) {
1504 if (stcb->asoc.assoc_id == id) {
1505 if (inp != stcb->sctp_ep) {
1507 * some other guy has the same id active (id
1510 SCTP_PRINTF("TSNH ep_associd2\n");
1513 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1517 SCTP_TCB_LOCK(stcb);
1527 sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1529 struct sctp_tcb *stcb;
1531 SCTP_INP_RLOCK(inp);
1532 stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
1533 SCTP_INP_RUNLOCK(inp);
1538 static struct sctp_inpcb *
1539 sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head,
1540 uint16_t lport, uint32_t vrf_id)
1542 struct sctp_inpcb *inp;
1543 struct sctp_laddr *laddr;
1546 struct sockaddr_in *sin;
1550 struct sockaddr_in6 *sin6;
1551 struct sockaddr_in6 *intf_addr6;
1558 * Endpoint probe expects that the INP_INFO is locked.
1566 switch (nam->sa_family) {
1569 sin = (struct sockaddr_in *)nam;
1574 sin6 = (struct sockaddr_in6 *)nam;
1578 /* unsupported family */
1585 LIST_FOREACH(inp, head, sctp_hash) {
1586 SCTP_INP_RLOCK(inp);
1587 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1588 SCTP_INP_RUNLOCK(inp);
1591 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) &&
1592 (inp->sctp_lport == lport)) {
1595 if ((nam->sa_family == AF_INET) &&
1596 (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1597 SCTP_IPV6_V6ONLY(inp)) {
1598 /* IPv4 on a IPv6 socket with ONLY IPv6 set */
1599 SCTP_INP_RUNLOCK(inp);
1604 /* A V6 address and the endpoint is NOT bound V6 */
1605 if (nam->sa_family == AF_INET6 &&
1606 (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
1607 SCTP_INP_RUNLOCK(inp);
1611 /* does a VRF id match? */
1613 if (inp->def_vrf_id == vrf_id)
1616 SCTP_INP_RUNLOCK(inp);
1621 SCTP_INP_RUNLOCK(inp);
1623 switch (nam->sa_family) {
1626 if (sin->sin_addr.s_addr == INADDR_ANY) {
1627 /* Can't hunt for one that has no address specified */
1634 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1635 /* Can't hunt for one that has no address specified */
1644 * ok, not bound to all so see if we can find a EP bound to this
1647 LIST_FOREACH(inp, head, sctp_hash) {
1648 SCTP_INP_RLOCK(inp);
1649 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1650 SCTP_INP_RUNLOCK(inp);
1653 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
1654 SCTP_INP_RUNLOCK(inp);
1658 * Ok this could be a likely candidate, look at all of its
1661 if (inp->sctp_lport != lport) {
1662 SCTP_INP_RUNLOCK(inp);
1665 /* does a VRF id match? */
1667 if (inp->def_vrf_id == vrf_id)
1671 SCTP_INP_RUNLOCK(inp);
1674 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1675 if (laddr->ifa == NULL) {
1676 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
1680 SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ",
1681 (void *)laddr->ifa);
1682 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1683 SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n");
1686 if (laddr->ifa->address.sa.sa_family == nam->sa_family) {
1687 /* possible, see if it matches */
1688 switch (nam->sa_family) {
1691 if (sin->sin_addr.s_addr ==
1692 laddr->ifa->address.sin.sin_addr.s_addr) {
1693 SCTP_INP_RUNLOCK(inp);
1700 intf_addr6 = &laddr->ifa->address.sin6;
1701 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1703 SCTP_INP_RUNLOCK(inp);
1711 SCTP_INP_RUNLOCK(inp);
1717 static struct sctp_inpcb *
1718 sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
1720 struct sctppcbhead *head;
1721 struct sctp_inpcb *t_inp;
1724 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1725 SCTP_BASE_INFO(hashmark))];
1726 LIST_FOREACH(t_inp, head, sctp_hash) {
1727 if (t_inp->sctp_lport != lport) {
1730 /* is it in the VRF in question */
1732 if (t_inp->def_vrf_id == vrf_id)
1737 /* This one is in use. */
1738 /* check the v6/v4 binding issue */
1739 if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1740 SCTP_IPV6_V6ONLY(t_inp)) {
1741 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1742 /* collision in V6 space */
1745 /* inp is BOUND_V4 no conflict */
1748 } else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1749 /* t_inp is bound v4 and v6, conflict always */
1752 /* t_inp is bound only V4 */
1753 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1754 SCTP_IPV6_V6ONLY(inp)) {
1758 /* else fall through to conflict */
1767 sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
1769 /* For 1-2-1 with port reuse */
1770 struct sctppcbhead *head;
1771 struct sctp_inpcb *tinp;
1773 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
1774 /* only works with port reuse on */
1777 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) {
1780 SCTP_INP_RUNLOCK(inp);
1781 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport,
1782 SCTP_BASE_INFO(hashmark))];
1783 /* Kick out all non-listeners to the TCP hash */
1784 LIST_FOREACH(tinp, head, sctp_hash) {
1785 if (tinp->sctp_lport != inp->sctp_lport) {
1788 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1791 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
1794 if (tinp->sctp_socket->so_qlimit) {
1797 SCTP_INP_WLOCK(tinp);
1798 LIST_REMOVE(tinp, sctp_hash);
1799 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))];
1800 tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
1801 LIST_INSERT_HEAD(head, tinp, sctp_hash);
1802 SCTP_INP_WUNLOCK(tinp);
1804 SCTP_INP_WLOCK(inp);
1805 /* Pull from where he was */
1806 LIST_REMOVE(inp, sctp_hash);
1807 inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL;
1808 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))];
1809 LIST_INSERT_HEAD(head, inp, sctp_hash);
1810 SCTP_INP_WUNLOCK(inp);
1811 SCTP_INP_RLOCK(inp);
1817 sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock,
1821 * First we check the hash table to see if someone has this port
1822 * bound with just the port.
1824 struct sctp_inpcb *inp;
1825 struct sctppcbhead *head;
1830 struct sockaddr_in *sin;
1834 struct sockaddr_in6 *sin6;
1838 switch (nam->sa_family) {
1841 sin = (struct sockaddr_in *)nam;
1842 lport = sin->sin_port;
1847 sin6 = (struct sockaddr_in6 *)nam;
1848 lport = sin6->sin6_port;
1855 * I could cheat here and just cast to one of the types but we will
1856 * do it right. It also provides the check against an Unsupported
1859 /* Find the head of the ALLADDR chain */
1860 if (have_lock == 0) {
1861 SCTP_INP_INFO_RLOCK();
1863 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1864 SCTP_BASE_INFO(hashmark))];
1865 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1868 * If the TCP model exists it could be that the main listening
1869 * endpoint is gone but there still exists a connected socket for
1870 * this guy. If so we can return the first one that we find. This
1871 * may NOT be the correct one so the caller should be wary on the
1872 * returned INP. Currently the only caller that sets find_tcp_pool
1873 * is in bindx where we are verifying that a user CAN bind the
1874 * address. He either has bound it already, or someone else has, or
1875 * its open to bind, so this is good enough.
1877 if (inp == NULL && find_tcp_pool) {
1878 for (i = 0; i < SCTP_BASE_INFO(hashtcpmark) + 1; i++) {
1879 head = &SCTP_BASE_INFO(sctp_tcpephash)[i];
1880 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1887 SCTP_INP_INCR_REF(inp);
1889 if (have_lock == 0) {
1890 SCTP_INP_INFO_RUNLOCK();
1896 * Find an association for an endpoint with the pointer to whom you want to
1897 * send to and the endpoint pointer. The address can be IPv4 or IPv6. We may
1898 * need to change the *to to some other struct like a mbuf...
1901 sctp_findassociation_addr_sa(struct sockaddr *from, struct sockaddr *to,
1902 struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool,
1905 struct sctp_inpcb *inp = NULL;
1906 struct sctp_tcb *retval;
1908 SCTP_INP_INFO_RLOCK();
1909 if (find_tcp_pool) {
1910 if (inp_p != NULL) {
1911 retval = sctp_tcb_special_locate(inp_p, from, to, netp,
1914 retval = sctp_tcb_special_locate(&inp, from, to, netp,
1917 if (retval != NULL) {
1918 SCTP_INP_INFO_RUNLOCK();
1922 inp = sctp_pcb_findep(to, 0, 1, vrf_id);
1923 if (inp_p != NULL) {
1926 SCTP_INP_INFO_RUNLOCK();
1932 * ok, we have an endpoint, now lets find the assoc for it (if any)
1933 * we now place the source address or from in the to of the find
1934 * endpoint call. Since in reality this chain is used from the
1935 * inbound packet side.
1937 if (inp_p != NULL) {
1938 retval = sctp_findassociation_ep_addr(inp_p, from, netp, to,
1941 retval = sctp_findassociation_ep_addr(&inp, from, netp, to,
1949 * This routine will grub through the mbuf that is a INIT or INIT-ACK and
1950 * find all addresses that the sender has specified in any address list. Each
1951 * address will be used to lookup the TCB and see if one exits.
1953 static struct sctp_tcb *
1954 sctp_findassociation_special_addr(struct mbuf *m, int offset,
1955 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp,
1956 struct sockaddr *dst)
1958 struct sctp_paramhdr *phdr, parm_buf;
1959 struct sctp_tcb *retval;
1960 uint32_t ptype, plen;
1963 struct sockaddr_in sin4;
1967 struct sockaddr_in6 sin6;
1972 memset(&sin4, 0, sizeof(sin4));
1973 sin4.sin_len = sizeof(sin4);
1974 sin4.sin_family = AF_INET;
1975 sin4.sin_port = sh->src_port;
1978 memset(&sin6, 0, sizeof(sin6));
1979 sin6.sin6_len = sizeof(sin6);
1980 sin6.sin6_family = AF_INET6;
1981 sin6.sin6_port = sh->src_port;
1985 offset += sizeof(struct sctp_init_chunk);
1987 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
1988 while (phdr != NULL) {
1989 /* now we must see if we want the parameter */
1990 ptype = ntohs(phdr->param_type);
1991 plen = ntohs(phdr->param_length);
1996 if (ptype == SCTP_IPV4_ADDRESS &&
1997 plen == sizeof(struct sctp_ipv4addr_param)) {
1998 /* Get the rest of the address */
1999 struct sctp_ipv4addr_param ip4_parm, *p4;
2001 phdr = sctp_get_next_param(m, offset,
2002 (struct sctp_paramhdr *)&ip4_parm, min(plen, sizeof(ip4_parm)));
2006 p4 = (struct sctp_ipv4addr_param *)phdr;
2007 memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr));
2009 retval = sctp_findassociation_ep_addr(inp_p,
2010 (struct sockaddr *)&sin4, netp, dst, NULL);
2011 if (retval != NULL) {
2017 if (ptype == SCTP_IPV6_ADDRESS &&
2018 plen == sizeof(struct sctp_ipv6addr_param)) {
2019 /* Get the rest of the address */
2020 struct sctp_ipv6addr_param ip6_parm, *p6;
2022 phdr = sctp_get_next_param(m, offset,
2023 (struct sctp_paramhdr *)&ip6_parm, min(plen, sizeof(ip6_parm)));
2027 p6 = (struct sctp_ipv6addr_param *)phdr;
2028 memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr));
2030 retval = sctp_findassociation_ep_addr(inp_p,
2031 (struct sockaddr *)&sin6, netp, dst, NULL);
2032 if (retval != NULL) {
2037 offset += SCTP_SIZE32(plen);
2038 phdr = sctp_get_next_param(m, offset, &parm_buf,
2044 static struct sctp_tcb *
2045 sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag,
2046 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport,
2047 uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
2050 * Use my vtag to hash. If we find it we then verify the source addr
2051 * is in the assoc. If all goes well we save a bit on rec of a
2054 struct sctpasochead *head;
2055 struct sctp_nets *net;
2056 struct sctp_tcb *stcb;
2058 SCTP_INP_INFO_RLOCK();
2059 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag,
2060 SCTP_BASE_INFO(hashasocmark))];
2063 SCTP_INP_INFO_RUNLOCK();
2066 LIST_FOREACH(stcb, head, sctp_asocs) {
2067 SCTP_INP_RLOCK(stcb->sctp_ep);
2068 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
2069 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2072 if (stcb->sctp_ep->def_vrf_id != vrf_id) {
2073 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2076 SCTP_TCB_LOCK(stcb);
2077 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2078 if (stcb->asoc.my_vtag == vtag) {
2080 if (stcb->rport != rport) {
2081 SCTP_TCB_UNLOCK(stcb);
2084 if (stcb->sctp_ep->sctp_lport != lport) {
2085 SCTP_TCB_UNLOCK(stcb);
2088 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
2089 SCTP_TCB_UNLOCK(stcb);
2092 /* RRS:Need toaddr check here */
2093 if (sctp_does_stcb_own_this_addr(stcb, to) == 0) {
2094 /* Endpoint does not own this address */
2095 SCTP_TCB_UNLOCK(stcb);
2100 * If we have both vtags that's all we match
2103 if (stcb->asoc.peer_vtag == remote_tag) {
2105 * If both tags match we consider it
2106 * conclusive and check NO
2107 * source/destination addresses
2112 if (skip_src_check) {
2115 *netp = sctp_findnet(stcb, from);
2117 *netp = NULL; /* unknown */
2120 *inp_p = stcb->sctp_ep;
2121 SCTP_INP_INFO_RUNLOCK();
2124 net = sctp_findnet(stcb, from);
2128 SCTP_STAT_INCR(sctps_vtagexpress);
2129 *inp_p = stcb->sctp_ep;
2130 SCTP_INP_INFO_RUNLOCK();
2134 * not him, this should only happen in rare
2135 * cases so I peg it.
2137 SCTP_STAT_INCR(sctps_vtagbogus);
2140 SCTP_TCB_UNLOCK(stcb);
2142 SCTP_INP_INFO_RUNLOCK();
2147 * Find an association with the pointer to the inbound IP packet. This can be
2148 * a IPv4 or IPv6 packet.
2151 sctp_findassociation_addr(struct mbuf *m, int offset,
2152 struct sockaddr *src, struct sockaddr *dst,
2153 struct sctphdr *sh, struct sctp_chunkhdr *ch,
2154 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2157 struct sctp_tcb *retval;
2158 struct sctp_inpcb *inp;
2161 /* we only go down this path if vtag is non-zero */
2162 retval = sctp_findassoc_by_vtag(src, dst, ntohl(sh->v_tag),
2163 inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0);
2169 if ((ch->chunk_type != SCTP_INITIATION) &&
2170 (ch->chunk_type != SCTP_INITIATION_ACK) &&
2171 (ch->chunk_type != SCTP_COOKIE_ACK) &&
2172 (ch->chunk_type != SCTP_COOKIE_ECHO)) {
2173 /* Other chunk types go to the tcp pool. */
2177 retval = sctp_findassociation_addr_sa(src, dst, inp_p, netp,
2178 find_tcp_pool, vrf_id);
2181 retval = sctp_findassociation_addr_sa(src, dst, &inp, netp,
2182 find_tcp_pool, vrf_id);
2184 SCTPDBG(SCTP_DEBUG_PCB1, "retval:%p inp:%p\n", (void *)retval, (void *)inp);
2185 if (retval == NULL && inp) {
2186 /* Found a EP but not this address */
2187 if ((ch->chunk_type == SCTP_INITIATION) ||
2188 (ch->chunk_type == SCTP_INITIATION_ACK)) {
2190 * special hook, we do NOT return linp or an
2191 * association that is linked to an existing
2192 * association that is under the TCP pool (i.e. no
2193 * listener exists). The endpoint finding routine
2194 * will always find a listener before examining the
2197 if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
2203 retval = sctp_findassociation_special_addr(m,
2204 offset, sh, &inp, netp, dst);
2205 if (inp_p != NULL) {
2210 SCTPDBG(SCTP_DEBUG_PCB1, "retval is %p\n", (void *)retval);
2215 * lookup an association by an ASCONF lookup address.
2216 * if the lookup address is 0.0.0.0 or ::0, use the vtag to do the lookup
2219 sctp_findassociation_ep_asconf(struct mbuf *m, int offset,
2220 struct sockaddr *dst, struct sctphdr *sh,
2221 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2223 struct sctp_tcb *stcb;
2224 struct sockaddr_storage remote_store;
2225 struct sctp_paramhdr parm_buf, *phdr;
2227 int zero_address = 0;
2230 struct sockaddr_in *sin;
2234 struct sockaddr_in6 *sin6;
2238 memset(&remote_store, 0, sizeof(remote_store));
2239 phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk),
2240 &parm_buf, sizeof(struct sctp_paramhdr));
2242 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n",
2246 ptype = (int)((uint32_t) ntohs(phdr->param_type));
2247 /* get the correlation address */
2250 case SCTP_IPV6_ADDRESS:
2252 /* ipv6 address param */
2253 struct sctp_ipv6addr_param *p6, p6_buf;
2255 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) {
2258 p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m,
2259 offset + sizeof(struct sctp_asconf_chunk),
2260 &p6_buf.ph, sizeof(*p6));
2262 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n",
2266 sin6 = (struct sockaddr_in6 *)&remote_store;
2267 sin6->sin6_family = AF_INET6;
2268 sin6->sin6_len = sizeof(*sin6);
2269 sin6->sin6_port = sh->src_port;
2270 memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr));
2271 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
2277 case SCTP_IPV4_ADDRESS:
2279 /* ipv4 address param */
2280 struct sctp_ipv4addr_param *p4, p4_buf;
2282 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) {
2285 p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m,
2286 offset + sizeof(struct sctp_asconf_chunk),
2287 &p4_buf.ph, sizeof(*p4));
2289 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n",
2293 sin = (struct sockaddr_in *)&remote_store;
2294 sin->sin_family = AF_INET;
2295 sin->sin_len = sizeof(*sin);
2296 sin->sin_port = sh->src_port;
2297 memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr));
2298 if (sin->sin_addr.s_addr == INADDR_ANY)
2304 /* invalid address param type */
2309 stcb = sctp_findassoc_by_vtag(NULL, dst, ntohl(sh->v_tag), inp_p,
2310 netp, sh->src_port, sh->dest_port, 1, vrf_id, 0);
2312 SCTP_INP_DECR_REF(*inp_p);
2315 stcb = sctp_findassociation_ep_addr(inp_p,
2316 (struct sockaddr *)&remote_store, netp,
2324 * allocate a sctp_inpcb and setup a temporary binding to a port/all
2325 * addresses. This way if we don't get a bind we by default pick a ephemeral
2326 * port with all addresses bound.
2329 sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
2332 * we get called when a new endpoint starts up. We need to allocate
2333 * the sctp_inpcb structure from the zone and init it. Mark it as
2334 * unbound and find a port that we can use as an ephemeral with
2335 * INADDR_ANY. If the user binds later no problem we can then add in
2336 * the specific addresses. And setup the default parameters for the
2340 struct sctp_inpcb *inp;
2342 struct timeval time;
2343 sctp_sharedkey_t *null_key;
2347 SCTP_INP_INFO_WLOCK();
2348 inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb);
2350 SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n");
2351 SCTP_INP_INFO_WUNLOCK();
2352 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2356 bzero(inp, sizeof(*inp));
2358 /* bump generations */
2359 /* setup socket pointers */
2360 inp->sctp_socket = so;
2361 inp->ip_inp.inp.inp_socket = so;
2363 if (MODULE_GLOBAL(ip6_auto_flowlabel)) {
2364 inp->ip_inp.inp.inp_flags |= IN6P_AUTOFLOWLABEL;
2367 inp->sctp_associd_counter = 1;
2368 inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT;
2369 inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
2370 inp->sctp_cmt_on_off = SCTP_BASE_SYSCTL(sctp_cmt_on_off);
2371 inp->sctp_ecn_enable = SCTP_BASE_SYSCTL(sctp_ecn_enable);
2372 /* init the small hash table we use to track asocid <-> tcb */
2373 inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark);
2374 if (inp->sctp_asocidhash == NULL) {
2375 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2376 SCTP_INP_INFO_WUNLOCK();
2381 struct inpcbpolicy *pcb_sp = NULL;
2383 error = ipsec_init_policy(so, &pcb_sp);
2384 /* Arrange to share the policy */
2385 inp->ip_inp.inp.inp_sp = pcb_sp;
2386 ((struct in6pcb *)(&inp->ip_inp.inp))->in6p_sp = pcb_sp;
2389 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2390 SCTP_INP_INFO_WUNLOCK();
2394 SCTP_INCR_EP_COUNT();
2395 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
2396 SCTP_INP_INFO_WUNLOCK();
2398 so->so_pcb = (caddr_t)inp;
2400 if (SCTP_SO_TYPE(so) == SOCK_SEQPACKET) {
2401 /* UDP style socket */
2402 inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
2403 SCTP_PCB_FLAGS_UNBOUND);
2404 /* Be sure it is NON-BLOCKING IO for UDP */
2405 /* SCTP_SET_SO_NBIO(so); */
2406 } else if (SCTP_SO_TYPE(so) == SOCK_STREAM) {
2407 /* TCP style socket */
2408 inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
2409 SCTP_PCB_FLAGS_UNBOUND);
2410 /* Be sure we have blocking IO by default */
2411 SCTP_CLEAR_SO_NBIO(so);
2414 * unsupported socket type (RAW, etc)- in case we missed it
2417 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
2419 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2420 return (EOPNOTSUPP);
2422 if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) {
2423 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2424 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2425 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) {
2426 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2427 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2428 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) {
2429 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2430 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2432 inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize),
2433 &inp->sctp_hashmark);
2434 if (inp->sctp_tcbhash == NULL) {
2435 SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
2436 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2438 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2441 inp->def_vrf_id = vrf_id;
2443 SCTP_INP_INFO_WLOCK();
2444 SCTP_INP_LOCK_INIT(inp);
2445 INP_LOCK_INIT(&inp->ip_inp.inp, "inp", "sctpinp");
2446 SCTP_INP_READ_INIT(inp);
2447 SCTP_ASOC_CREATE_LOCK_INIT(inp);
2448 /* lock the new ep */
2449 SCTP_INP_WLOCK(inp);
2451 /* add it to the info area */
2452 LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list);
2453 SCTP_INP_INFO_WUNLOCK();
2455 TAILQ_INIT(&inp->read_queue);
2456 LIST_INIT(&inp->sctp_addr_list);
2458 LIST_INIT(&inp->sctp_asoc_list);
2460 #ifdef SCTP_TRACK_FREED_ASOCS
2462 LIST_INIT(&inp->sctp_asoc_free_list);
2464 /* Init the timer structure for signature change */
2465 SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer);
2466 inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE;
2468 /* now init the actual endpoint default data */
2471 /* setup the base timeout information */
2472 m->sctp_timeoutticks[SCTP_TIMER_SEND] = SEC_TO_TICKS(SCTP_SEND_SEC); /* needed ? */
2473 m->sctp_timeoutticks[SCTP_TIMER_INIT] = SEC_TO_TICKS(SCTP_INIT_SEC); /* needed ? */
2474 m->sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default));
2475 m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default));
2476 m->sctp_timeoutticks[SCTP_TIMER_PMTU] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default));
2477 m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default));
2478 m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default));
2479 /* all max/min max are in ms */
2480 m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default);
2481 m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default);
2482 m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default);
2483 m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default);
2484 m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default);
2486 m->max_open_streams_intome = MAX_SCTP_STREAMS;
2488 m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default);
2489 m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default);
2490 m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default);
2491 m->def_net_pf_threshold = SCTP_BASE_SYSCTL(sctp_path_pf_threshold);
2492 m->sctp_sws_sender = SCTP_SWS_SENDER_DEF;
2493 m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF;
2494 m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default);
2495 m->fr_max_burst = SCTP_BASE_SYSCTL(sctp_fr_max_burst_default);
2497 m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module);
2498 m->sctp_default_ss_module = SCTP_BASE_SYSCTL(sctp_default_ss_module);
2499 /* number of streams to pre-open on a association */
2500 m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default);
2502 /* Add adaptation cookie */
2503 m->adaptation_layer_indicator = 0x504C5253;
2505 /* seed random number generator */
2506 m->random_counter = 1;
2507 m->store_at = SCTP_SIGNATURE_SIZE;
2508 SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers));
2509 sctp_fill_random_store(m);
2511 /* Minimum cookie size */
2512 m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) +
2513 sizeof(struct sctp_state_cookie);
2514 m->size_of_a_cookie += SCTP_SIGNATURE_SIZE;
2516 /* Setup the initial secret */
2517 (void)SCTP_GETTIME_TIMEVAL(&time);
2518 m->time_of_secret_change = time.tv_sec;
2520 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
2521 m->secret_key[0][i] = sctp_select_initial_TSN(m);
2523 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
2525 /* How long is a cookie good for ? */
2526 m->def_cookie_life = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default));
2528 * Initialize authentication parameters
2530 m->local_hmacs = sctp_default_supported_hmaclist();
2531 m->local_auth_chunks = sctp_alloc_chunklist();
2532 m->default_dscp = 0;
2534 m->default_flowlabel = 0;
2536 m->port = 0; /* encapsulation disabled by default */
2537 sctp_auth_set_default_chunks(m->local_auth_chunks);
2538 LIST_INIT(&m->shared_keys);
2539 /* add default NULL key as key id 0 */
2540 null_key = sctp_alloc_sharedkey();
2541 sctp_insert_sharedkey(&m->shared_keys, null_key);
2542 SCTP_INP_WUNLOCK(inp);
2543 #ifdef SCTP_LOG_CLOSING
2544 sctp_log_closing(inp, NULL, 12);
2551 sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp,
2552 struct sctp_tcb *stcb)
2554 struct sctp_nets *net;
2555 uint16_t lport, rport;
2556 struct sctppcbhead *head;
2557 struct sctp_laddr *laddr, *oladdr;
2559 atomic_add_int(&stcb->asoc.refcnt, 1);
2560 SCTP_TCB_UNLOCK(stcb);
2561 SCTP_INP_INFO_WLOCK();
2562 SCTP_INP_WLOCK(old_inp);
2563 SCTP_INP_WLOCK(new_inp);
2564 SCTP_TCB_LOCK(stcb);
2565 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2567 new_inp->sctp_ep.time_of_secret_change =
2568 old_inp->sctp_ep.time_of_secret_change;
2569 memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key,
2570 sizeof(old_inp->sctp_ep.secret_key));
2571 new_inp->sctp_ep.current_secret_number =
2572 old_inp->sctp_ep.current_secret_number;
2573 new_inp->sctp_ep.last_secret_number =
2574 old_inp->sctp_ep.last_secret_number;
2575 new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie;
2577 /* make it so new data pours into the new socket */
2578 stcb->sctp_socket = new_inp->sctp_socket;
2579 stcb->sctp_ep = new_inp;
2581 /* Copy the port across */
2582 lport = new_inp->sctp_lport = old_inp->sctp_lport;
2583 rport = stcb->rport;
2584 /* Pull the tcb from the old association */
2585 LIST_REMOVE(stcb, sctp_tcbhash);
2586 LIST_REMOVE(stcb, sctp_tcblist);
2587 if (stcb->asoc.in_asocid_hash) {
2588 LIST_REMOVE(stcb, sctp_tcbasocidhash);
2590 /* Now insert the new_inp into the TCP connected hash */
2591 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
2593 LIST_INSERT_HEAD(head, new_inp, sctp_hash);
2594 /* Its safe to access */
2595 new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
2597 /* Now move the tcb into the endpoint list */
2598 LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist);
2600 * Question, do we even need to worry about the ep-hash since we
2601 * only have one connection? Probably not :> so lets get rid of it
2602 * and not suck up any kernel memory in that.
2604 if (stcb->asoc.in_asocid_hash) {
2605 struct sctpasochead *lhd;
2607 lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id,
2608 new_inp->hashasocidmark)];
2609 LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash);
2611 /* Ok. Let's restart timer. */
2612 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2613 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp,
2617 SCTP_INP_INFO_WUNLOCK();
2618 if (new_inp->sctp_tcbhash != NULL) {
2619 SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark);
2620 new_inp->sctp_tcbhash = NULL;
2622 if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2623 /* Subset bound, so copy in the laddr list from the old_inp */
2624 LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) {
2625 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2626 if (laddr == NULL) {
2628 * Gak, what can we do? This assoc is really
2629 * HOSED. We probably should send an abort
2632 SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n");
2635 SCTP_INCR_LADDR_COUNT();
2636 bzero(laddr, sizeof(*laddr));
2637 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2638 laddr->ifa = oladdr->ifa;
2639 atomic_add_int(&laddr->ifa->refcount, 1);
2640 LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr,
2642 new_inp->laddr_count++;
2643 if (oladdr == stcb->asoc.last_used_address) {
2644 stcb->asoc.last_used_address = laddr;
2649 * Now any running timers need to be adjusted since we really don't
2650 * care if they are running or not just blast in the new_inp into
2654 stcb->asoc.dack_timer.ep = (void *)new_inp;
2655 stcb->asoc.asconf_timer.ep = (void *)new_inp;
2656 stcb->asoc.strreset_timer.ep = (void *)new_inp;
2657 stcb->asoc.shut_guard_timer.ep = (void *)new_inp;
2658 stcb->asoc.autoclose_timer.ep = (void *)new_inp;
2659 stcb->asoc.delayed_event_timer.ep = (void *)new_inp;
2660 stcb->asoc.delete_prim_timer.ep = (void *)new_inp;
2661 /* now what about the nets? */
2662 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2663 net->pmtu_timer.ep = (void *)new_inp;
2664 net->hb_timer.ep = (void *)new_inp;
2665 net->rxt_timer.ep = (void *)new_inp;
2667 SCTP_INP_WUNLOCK(new_inp);
2668 SCTP_INP_WUNLOCK(old_inp);
2674 /* sctp_ifap is used to bypass normal local address validation checks */
2676 sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
2677 struct sctp_ifa *sctp_ifap, struct thread *p)
2679 /* bind a ep to a socket address */
2680 struct sctppcbhead *head;
2681 struct sctp_inpcb *inp, *inp_tmp;
2682 struct inpcb *ip_inp;
2683 int port_reuse_active = 0;
2692 inp = (struct sctp_inpcb *)so->so_pcb;
2693 ip_inp = (struct inpcb *)so->so_pcb;
2696 SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port:%d\n",
2697 ntohs(((struct sockaddr_in *)addr)->sin_port));
2698 SCTPDBG(SCTP_DEBUG_PCB1, "Addr :");
2699 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
2702 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2703 /* already did a bind, subsequent binds NOT allowed ! */
2704 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2709 panic("null proc/thread");
2712 switch (addr->sa_family) {
2716 struct sockaddr_in *sin;
2718 /* IPV6_V6ONLY socket? */
2719 if (SCTP_IPV6_V6ONLY(ip_inp)) {
2720 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2723 if (addr->sa_len != sizeof(*sin)) {
2724 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2727 sin = (struct sockaddr_in *)addr;
2728 lport = sin->sin_port;
2730 * For LOOPBACK the prison_local_ip4() call
2731 * will transmute the ip address to the
2734 if (p && (error = prison_local_ip4(p->td_ucred, &sin->sin_addr)) != 0) {
2735 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2738 if (sin->sin_addr.s_addr != INADDR_ANY) {
2748 * Only for pure IPv6 Address. (No IPv4
2751 struct sockaddr_in6 *sin6;
2753 sin6 = (struct sockaddr_in6 *)addr;
2755 if (addr->sa_len != sizeof(*sin6)) {
2756 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2759 lport = sin6->sin6_port;
2761 * For LOOPBACK the prison_local_ip6() call
2762 * will transmute the ipv6 address to the
2765 if (p && (error = prison_local_ip6(p->td_ucred, &sin6->sin6_addr,
2766 (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
2767 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2770 if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2772 /* KAME hack: embed scopeid */
2773 if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
2774 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2778 /* this must be cleared for ifa_ifwithaddr() */
2779 sin6->sin6_scope_id = 0;
2784 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EAFNOSUPPORT);
2785 return (EAFNOSUPPORT);
2788 SCTP_INP_INFO_WLOCK();
2789 SCTP_INP_WLOCK(inp);
2790 /* Setup a vrf_id to be the default for the non-bind-all case. */
2791 vrf_id = inp->def_vrf_id;
2793 /* increase our count due to the unlock we do */
2794 SCTP_INP_INCR_REF(inp);
2797 * Did the caller specify a port? if so we must see if an ep
2798 * already has this one bound.
2800 /* got to be root to get at low ports */
2801 if (ntohs(lport) < IPPORT_RESERVED) {
2803 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2805 SCTP_INP_DECR_REF(inp);
2806 SCTP_INP_WUNLOCK(inp);
2807 SCTP_INP_INFO_WUNLOCK();
2812 SCTP_INP_DECR_REF(inp);
2813 SCTP_INP_WUNLOCK(inp);
2814 SCTP_INP_INFO_WUNLOCK();
2815 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2818 SCTP_INP_WUNLOCK(inp);
2820 vrf_id = inp->def_vrf_id;
2821 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2822 if (inp_tmp != NULL) {
2824 * lock guy returned and lower count note
2825 * that we are not bound so inp_tmp should
2826 * NEVER be inp. And it is this inp
2827 * (inp_tmp) that gets the reference bump,
2828 * so we must lower it.
2830 SCTP_INP_DECR_REF(inp_tmp);
2832 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2833 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2835 * Ok, must be one-2-one and
2836 * allowing port re-use
2838 port_reuse_active = 1;
2839 goto continue_anyway;
2841 SCTP_INP_DECR_REF(inp);
2842 SCTP_INP_INFO_WUNLOCK();
2843 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2844 return (EADDRINUSE);
2847 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2848 if (inp_tmp != NULL) {
2850 * lock guy returned and lower count note
2851 * that we are not bound so inp_tmp should
2852 * NEVER be inp. And it is this inp
2853 * (inp_tmp) that gets the reference bump,
2854 * so we must lower it.
2856 SCTP_INP_DECR_REF(inp_tmp);
2858 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2859 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2861 * Ok, must be one-2-one and
2862 * allowing port re-use
2864 port_reuse_active = 1;
2865 goto continue_anyway;
2867 SCTP_INP_DECR_REF(inp);
2868 SCTP_INP_INFO_WUNLOCK();
2869 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2870 return (EADDRINUSE);
2874 SCTP_INP_WLOCK(inp);
2876 /* verify that no lport is not used by a singleton */
2877 if ((port_reuse_active == 0) &&
2878 (inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))) {
2879 /* Sorry someone already has this one bound */
2880 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2881 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2882 port_reuse_active = 1;
2884 SCTP_INP_DECR_REF(inp);
2885 SCTP_INP_WUNLOCK(inp);
2886 SCTP_INP_INFO_WUNLOCK();
2887 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2888 return (EADDRINUSE);
2893 uint16_t first, last, candidate;
2897 if (ip_inp->inp_flags & INP_HIGHPORT) {
2898 first = MODULE_GLOBAL(ipport_hifirstauto);
2899 last = MODULE_GLOBAL(ipport_hilastauto);
2900 } else if (ip_inp->inp_flags & INP_LOWPORT) {
2902 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2904 SCTP_INP_DECR_REF(inp);
2905 SCTP_INP_WUNLOCK(inp);
2906 SCTP_INP_INFO_WUNLOCK();
2907 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2910 first = MODULE_GLOBAL(ipport_lowfirstauto);
2911 last = MODULE_GLOBAL(ipport_lowlastauto);
2913 first = MODULE_GLOBAL(ipport_firstauto);
2914 last = MODULE_GLOBAL(ipport_lastauto);
2923 count = last - first + 1; /* number of candidates */
2924 candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count);
2928 if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) {
2933 SCTP_INP_DECR_REF(inp);
2934 SCTP_INP_WUNLOCK(inp);
2935 SCTP_INP_INFO_WUNLOCK();
2936 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2937 return (EADDRINUSE);
2939 if (candidate == last)
2942 candidate = candidate + 1;
2945 lport = htons(candidate);
2947 SCTP_INP_DECR_REF(inp);
2948 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE |
2949 SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
2951 * this really should not happen. The guy did a non-blocking
2952 * bind and then did a close at the same time.
2954 SCTP_INP_WUNLOCK(inp);
2955 SCTP_INP_INFO_WUNLOCK();
2956 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2959 /* ok we look clear to give out this port, so lets setup the binding */
2961 /* binding to all addresses, so just set in the proper flags */
2962 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL;
2963 /* set the automatic addr changes from kernel flag */
2964 if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) {
2965 sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
2966 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
2968 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
2969 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
2971 if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) {
2972 sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
2974 sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
2977 * set the automatic mobility_base from kernel flag (by
2980 if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) {
2981 sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE);
2982 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
2984 sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE);
2985 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
2988 * set the automatic mobility_fasthandoff from kernel flag
2991 if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) {
2992 sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF);
2993 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
2995 sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF);
2996 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3000 * bind specific, make sure flags is off and add a new
3001 * address structure to the sctp_addr_list inside the ep
3004 * We will need to allocate one and insert it at the head. The
3005 * socketopt call can just insert new addresses in there as
3006 * well. It will also have to do the embed scope kame hack
3007 * too (before adding).
3009 struct sctp_ifa *ifa;
3010 struct sockaddr_storage store_sa;
3012 memset(&store_sa, 0, sizeof(store_sa));
3013 switch (addr->sa_family) {
3017 struct sockaddr_in *sin;
3019 sin = (struct sockaddr_in *)&store_sa;
3020 memcpy(sin, addr, sizeof(struct sockaddr_in));
3028 struct sockaddr_in6 *sin6;
3030 sin6 = (struct sockaddr_in6 *)&store_sa;
3031 memcpy(sin6, addr, sizeof(struct sockaddr_in6));
3032 sin6->sin6_port = 0;
3040 * first find the interface with the bound address need to
3041 * zero out the port to find the address! yuck! can't do
3042 * this earlier since need port for sctp_pcb_findep()
3044 if (sctp_ifap != NULL) {
3048 * Note for BSD we hit here always other O/S's will
3049 * pass things in via the sctp_ifap argument
3052 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&store_sa,
3053 vrf_id, SCTP_ADDR_NOT_LOCKED);
3056 /* Can't find an interface with that address */
3057 SCTP_INP_WUNLOCK(inp);
3058 SCTP_INP_INFO_WUNLOCK();
3059 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRNOTAVAIL);
3060 return (EADDRNOTAVAIL);
3063 if (addr->sa_family == AF_INET6) {
3064 /* GAK, more FIXME IFA lock? */
3065 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
3066 /* Can't bind a non-existent addr. */
3067 SCTP_INP_WUNLOCK(inp);
3068 SCTP_INP_INFO_WUNLOCK();
3069 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3074 /* we're not bound all */
3075 inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL;
3076 /* allow bindx() to send ASCONF's for binding changes */
3077 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3078 /* clear automatic addr changes from kernel flag */
3079 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3081 /* add this address to the endpoint list */
3082 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0);
3084 SCTP_INP_WUNLOCK(inp);
3085 SCTP_INP_INFO_WUNLOCK();
3090 /* find the bucket */
3091 if (port_reuse_active) {
3092 /* Put it into tcp 1-2-1 hash */
3093 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))];
3094 inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
3096 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))];
3098 /* put it in the bucket */
3099 LIST_INSERT_HEAD(head, inp, sctp_hash);
3100 SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n",
3101 (void *)head, ntohs(lport), port_reuse_active);
3102 /* set in the port */
3103 inp->sctp_lport = lport;
3105 /* turn off just the unbound flag */
3106 inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
3107 SCTP_INP_WUNLOCK(inp);
3108 SCTP_INP_INFO_WUNLOCK();
3114 sctp_iterator_inp_being_freed(struct sctp_inpcb *inp)
3116 struct sctp_iterator *it, *nit;
3119 * We enter with the only the ITERATOR_LOCK in place and a write
3120 * lock on the inp_info stuff.
3122 it = sctp_it_ctl.cur_it;
3123 if (it && (it->vn != curvnet)) {
3124 /* Its not looking at our VNET */
3127 if (it && (it->inp == inp)) {
3129 * This is tricky and we hold the iterator lock, but when it
3130 * returns and gets the lock (when we release it) the
3131 * iterator will try to operate on inp. We need to stop that
3132 * from happening. But of course the iterator has a
3133 * reference on the stcb and inp. We can mark it and it will
3136 * If its a single iterator situation, we set the end iterator
3137 * flag. Otherwise we set the iterator to go to the next
3141 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3142 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
3144 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_INP;
3148 * Now go through and remove any single reference to our inp that
3149 * may be still pending on the list
3151 SCTP_IPI_ITERATOR_WQ_LOCK();
3152 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
3153 if (it->vn != curvnet) {
3156 if (it->inp == inp) {
3157 /* This one points to me is it inp specific? */
3158 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3159 /* Remove and free this one */
3160 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
3162 if (it->function_atend != NULL) {
3163 (*it->function_atend) (it->pointer, it->val);
3165 SCTP_FREE(it, SCTP_M_ITER);
3167 it->inp = LIST_NEXT(it->inp, sctp_list);
3169 SCTP_INP_INCR_REF(it->inp);
3173 * When its put in the refcnt is incremented so decr
3176 SCTP_INP_DECR_REF(inp);
3179 SCTP_IPI_ITERATOR_WQ_UNLOCK();
3182 /* release sctp_inpcb unbind the port */
3184 sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
3187 * Here we free a endpoint. We must find it (if it is in the Hash
3188 * table) and remove it from there. Then we must also find it in the
3189 * overall list and remove it from there. After all removals are
3190 * complete then any timer has to be stopped. Then start the actual
3191 * freeing. a) Any local lists. b) Any associations. c) The hash of
3192 * all associations. d) finally the ep itself.
3194 struct sctp_tcb *asoc, *nasoc;
3195 struct sctp_laddr *laddr, *nladdr;
3196 struct inpcb *ip_pcb;
3198 int being_refed = 0;
3199 struct sctp_queued_to_read *sq, *nsq;
3201 sctp_sharedkey_t *shared_key, *nshared_key;
3204 #ifdef SCTP_LOG_CLOSING
3205 sctp_log_closing(inp, NULL, 0);
3207 SCTP_ITERATOR_LOCK();
3208 /* mark any iterators on the list or being processed */
3209 sctp_iterator_inp_being_freed(inp);
3210 SCTP_ITERATOR_UNLOCK();
3211 so = inp->sctp_socket;
3212 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
3213 /* been here before.. eeks.. get out of here */
3214 SCTP_PRINTF("This conflict in free SHOULD not be happening! from %d, imm %d\n", from, immediate);
3215 #ifdef SCTP_LOG_CLOSING
3216 sctp_log_closing(inp, NULL, 1);
3220 SCTP_ASOC_CREATE_LOCK(inp);
3221 SCTP_INP_INFO_WLOCK();
3223 SCTP_INP_WLOCK(inp);
3224 if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
3225 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP;
3226 /* socket is gone, so no more wakeups allowed */
3227 inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE;
3228 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
3229 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
3232 /* First time through we have the socket lock, after that no more. */
3233 sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL,
3234 SCTP_FROM_SCTP_PCB + SCTP_LOC_1);
3237 sctp_m_freem(inp->control);
3238 inp->control = NULL;
3241 sctp_m_freem(inp->pkt);
3244 ip_pcb = &inp->ip_inp.inp; /* we could just cast the main pointer
3245 * here but I will be nice :> (i.e.
3247 if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
3251 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3252 SCTP_TCB_LOCK(asoc);
3253 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3254 /* Skip guys being freed */
3256 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3258 * Special case - we did not start a
3259 * kill timer on the asoc due to it
3260 * was not closed. So go ahead and
3263 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3264 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3266 SCTP_TCB_UNLOCK(asoc);
3269 if (((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_WAIT) ||
3270 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_ECHOED)) &&
3271 (asoc->asoc.total_output_queue_size == 0)) {
3273 * If we have data in queue, we don't want
3274 * to just free since the app may have done,
3275 * send()/close or connect/send/close. And
3276 * it wants the data to get across first.
3278 /* Just abandon things in the front states */
3279 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE,
3280 SCTP_FROM_SCTP_PCB + SCTP_LOC_2) == 0) {
3285 /* Disconnect the socket please */
3286 asoc->sctp_socket = NULL;
3287 asoc->asoc.state |= SCTP_STATE_CLOSED_SOCKET;
3288 if ((asoc->asoc.size_on_reasm_queue > 0) ||
3289 (asoc->asoc.control_pdapi) ||
3290 (asoc->asoc.size_on_all_streams > 0) ||
3291 (so && (so->so_rcv.sb_cc > 0))) {
3292 /* Left with Data unread */
3293 struct mbuf *op_err;
3295 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3296 0, M_DONTWAIT, 1, MT_DATA);
3298 /* Fill in the user initiated abort */
3299 struct sctp_paramhdr *ph;
3302 SCTP_BUF_LEN(op_err) =
3303 sizeof(struct sctp_paramhdr) + sizeof(uint32_t);
3305 struct sctp_paramhdr *);
3306 ph->param_type = htons(
3307 SCTP_CAUSE_USER_INITIATED_ABT);
3308 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3309 ippp = (uint32_t *) (ph + 1);
3310 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_3);
3312 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_3;
3313 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3314 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3315 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3316 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3317 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3319 if (sctp_free_assoc(inp, asoc,
3320 SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_4) == 0) {
3324 } else if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3325 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3326 (asoc->asoc.stream_queue_cnt == 0)) {
3327 if (asoc->asoc.locked_on_sending) {
3330 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
3331 (SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
3332 struct sctp_nets *netp;
3334 if (asoc->asoc.alternate) {
3335 netp = asoc->asoc.alternate;
3337 netp = asoc->asoc.primary_destination;
3340 * there is nothing queued to send,
3341 * so I send shutdown
3343 sctp_send_shutdown(asoc, netp);
3344 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3345 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3346 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3348 SCTP_SET_STATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_SENT);
3349 SCTP_CLEAR_SUBSTATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_PENDING);
3350 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, asoc->sctp_ep, asoc,
3352 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3353 asoc->asoc.primary_destination);
3354 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED);
3357 /* mark into shutdown pending */
3358 struct sctp_stream_queue_pending *sp;
3360 asoc->asoc.state |= SCTP_STATE_SHUTDOWN_PENDING;
3361 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3362 asoc->asoc.primary_destination);
3363 if (asoc->asoc.locked_on_sending) {
3364 sp = TAILQ_LAST(&((asoc->asoc.locked_on_sending)->outqueue),
3367 SCTP_PRINTF("Error, sp is NULL, locked on sending is %p strm:%d\n",
3368 (void *)asoc->asoc.locked_on_sending,
3369 asoc->asoc.locked_on_sending->stream_no);
3371 if ((sp->length == 0) && (sp->msg_is_complete == 0))
3372 asoc->asoc.state |= SCTP_STATE_PARTIAL_MSG_LEFT;
3375 if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3376 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3377 (asoc->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
3378 struct mbuf *op_err;
3381 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3382 0, M_DONTWAIT, 1, MT_DATA);
3388 struct sctp_paramhdr *ph;
3391 SCTP_BUF_LEN(op_err) =
3392 (sizeof(struct sctp_paramhdr) +
3395 struct sctp_paramhdr *);
3396 ph->param_type = htons(
3397 SCTP_CAUSE_USER_INITIATED_ABT);
3398 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3399 ippp = (uint32_t *) (ph + 1);
3400 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_5);
3402 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_5;
3403 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3404 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3405 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3406 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3407 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3409 if (sctp_free_assoc(inp, asoc,
3410 SCTP_PCBFREE_NOFORCE,
3411 SCTP_FROM_SCTP_PCB + SCTP_LOC_6) == 0) {
3416 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
3420 SCTP_TCB_UNLOCK(asoc);
3422 /* now is there some left in our SHUTDOWN state? */
3424 #ifdef SCTP_LOG_CLOSING
3425 sctp_log_closing(inp, NULL, 2);
3427 inp->sctp_socket = NULL;
3428 SCTP_INP_WUNLOCK(inp);
3429 SCTP_ASOC_CREATE_UNLOCK(inp);
3430 SCTP_INP_INFO_WUNLOCK();
3434 inp->sctp_socket = NULL;
3435 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) !=
3436 SCTP_PCB_FLAGS_UNBOUND) {
3438 * ok, this guy has been bound. It's port is somewhere in
3439 * the SCTP_BASE_INFO(hash table). Remove it!
3441 LIST_REMOVE(inp, sctp_hash);
3442 inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND;
3445 * If there is a timer running to kill us, forget it, since it may
3446 * have a contest on the INP lock.. which would cause us to die ...
3449 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3450 SCTP_TCB_LOCK(asoc);
3451 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3452 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3453 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3454 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3457 SCTP_TCB_UNLOCK(asoc);
3460 /* Free associations that are NOT killing us */
3461 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_COOKIE_WAIT) &&
3462 ((asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) {
3463 struct mbuf *op_err;
3466 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3467 0, M_DONTWAIT, 1, MT_DATA);
3469 /* Fill in the user initiated abort */
3470 struct sctp_paramhdr *ph;
3472 SCTP_BUF_LEN(op_err) = (sizeof(struct sctp_paramhdr) +
3474 ph = mtod(op_err, struct sctp_paramhdr *);
3475 ph->param_type = htons(
3476 SCTP_CAUSE_USER_INITIATED_ABT);
3477 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3478 ippp = (uint32_t *) (ph + 1);
3479 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_7);
3482 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_7;
3483 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3484 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3485 } else if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3487 SCTP_TCB_UNLOCK(asoc);
3490 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3491 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3492 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3494 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_8) == 0) {
3499 /* Ok we have someone out there that will kill us */
3500 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3501 #ifdef SCTP_LOG_CLOSING
3502 sctp_log_closing(inp, NULL, 3);
3504 SCTP_INP_WUNLOCK(inp);
3505 SCTP_ASOC_CREATE_UNLOCK(inp);
3506 SCTP_INP_INFO_WUNLOCK();
3509 if (SCTP_INP_LOCK_CONTENDED(inp))
3511 if (SCTP_INP_READ_CONTENDED(inp))
3513 if (SCTP_ASOC_CREATE_LOCK_CONTENDED(inp))
3516 if ((inp->refcount) ||
3518 (inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) {
3519 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3520 #ifdef SCTP_LOG_CLOSING
3521 sctp_log_closing(inp, NULL, 4);
3523 sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
3524 SCTP_INP_WUNLOCK(inp);
3525 SCTP_ASOC_CREATE_UNLOCK(inp);
3526 SCTP_INP_INFO_WUNLOCK();
3529 inp->sctp_ep.signature_change.type = 0;
3530 inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE;
3532 * Remove it from the list .. last thing we need a lock for.
3534 LIST_REMOVE(inp, sctp_list);
3535 SCTP_INP_WUNLOCK(inp);
3536 SCTP_ASOC_CREATE_UNLOCK(inp);
3537 SCTP_INP_INFO_WUNLOCK();
3539 * Now we release all locks. Since this INP cannot be found anymore
3540 * except possibly by the kill timer that might be running. We call
3541 * the drain function here. It should hit the case were it sees the
3542 * ACTIVE flag cleared and exit out freeing us to proceed and
3543 * destroy everything.
3545 if (from != SCTP_CALLED_FROM_INPKILL_TIMER) {
3546 (void)SCTP_OS_TIMER_STOP_DRAIN(&inp->sctp_ep.signature_change.timer);
3548 /* Probably un-needed */
3549 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3552 #ifdef SCTP_LOG_CLOSING
3553 sctp_log_closing(inp, NULL, 5);
3557 if ((inp->sctp_asocidhash) != NULL) {
3558 SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark);
3559 inp->sctp_asocidhash = NULL;
3561 /* sa_ignore FREED_MEMORY */
3562 TAILQ_FOREACH_SAFE(sq, &inp->read_queue, next, nsq) {
3563 /* Its only abandoned if it had data left */
3565 SCTP_STAT_INCR(sctps_left_abandon);
3567 TAILQ_REMOVE(&inp->read_queue, sq, next);
3568 sctp_free_remote_addr(sq->whoFrom);
3570 so->so_rcv.sb_cc -= sq->length;
3572 sctp_m_freem(sq->data);
3576 * no need to free the net count, since at this point all
3579 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
3580 SCTP_DECR_READQ_COUNT();
3582 /* Now the sctp_pcb things */
3584 * free each asoc if it is not already closed/free. we can't use the
3585 * macro here since le_next will get freed as part of the
3586 * sctp_free_assoc() call.
3590 ipsec_delete_pcbpolicy(ip_pcb);
3593 /* Unlocks not needed since the socket is gone now */
3595 if (ip_pcb->inp_options) {
3596 (void)sctp_m_free(ip_pcb->inp_options);
3597 ip_pcb->inp_options = 0;
3600 if (ip_pcb->inp_vflag & INP_IPV6) {
3601 struct in6pcb *in6p;
3603 in6p = (struct in6pcb *)inp;
3604 ip6_freepcbopts(in6p->in6p_outputopts);
3607 ip_pcb->inp_vflag = 0;
3608 /* free up authentication fields */
3609 if (inp->sctp_ep.local_auth_chunks != NULL)
3610 sctp_free_chunklist(inp->sctp_ep.local_auth_chunks);
3611 if (inp->sctp_ep.local_hmacs != NULL)
3612 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3614 LIST_FOREACH_SAFE(shared_key, &inp->sctp_ep.shared_keys, next, nshared_key) {
3615 LIST_REMOVE(shared_key, next);
3616 sctp_free_sharedkey(shared_key);
3617 /* sa_ignore FREED_MEMORY */
3621 * if we have an address list the following will free the list of
3622 * ifaddr's that are set into this ep. Again macro limitations here,
3623 * since the LIST_FOREACH could be a bad idea.
3625 LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
3626 sctp_remove_laddr(laddr);
3629 #ifdef SCTP_TRACK_FREED_ASOCS
3631 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_free_list, sctp_tcblist, nasoc) {
3632 LIST_REMOVE(asoc, sctp_tcblist);
3633 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), asoc);
3634 SCTP_DECR_ASOC_COUNT();
3636 /* *** END TEMP CODE *** */
3638 /* Now lets see about freeing the EP hash table. */
3639 if (inp->sctp_tcbhash != NULL) {
3640 SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
3641 inp->sctp_tcbhash = NULL;
3643 /* Now we must put the ep memory back into the zone pool */
3644 INP_LOCK_DESTROY(&inp->ip_inp.inp);
3645 SCTP_INP_LOCK_DESTROY(inp);
3646 SCTP_INP_READ_DESTROY(inp);
3647 SCTP_ASOC_CREATE_LOCK_DESTROY(inp);
3648 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
3649 SCTP_DECR_EP_COUNT();
3654 sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
3656 struct sctp_nets *net;
3658 /* locate the address */
3659 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3660 if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr))
3668 sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
3670 struct sctp_ifa *sctp_ifa;
3672 sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED);
3681 * add's a remote endpoint address, done with the INIT/INIT-ACK as well as
3682 * when a ASCONF arrives that adds it. It will also initialize all the cwnd
3686 sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
3687 struct sctp_nets **netp, int set_scope, int from)
3690 * The following is redundant to the same lines in the
3691 * sctp_aloc_assoc() but is needed since others call the add address
3694 struct sctp_nets *net, *netfirst;
3697 SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ",
3699 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr);
3701 netfirst = sctp_findnet(stcb, newaddr);
3704 * Lie and return ok, we don't want to make the association
3705 * go away for this behavior. It will happen in the TCP
3706 * model in a connected socket. It does not reach the hash
3707 * table until after the association is built so it can't be
3708 * found. Mark as reachable, since the initial creation will
3709 * have been cleared and the NOT_IN_ASSOC flag will have
3710 * been added... and we don't want to end up removing it
3713 if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) {
3714 netfirst->dest_state = (SCTP_ADDR_REACHABLE |
3715 SCTP_ADDR_UNCONFIRMED);
3717 netfirst->dest_state = SCTP_ADDR_REACHABLE;
3723 switch (newaddr->sa_family) {
3727 struct sockaddr_in *sin;
3729 sin = (struct sockaddr_in *)newaddr;
3730 if (sin->sin_addr.s_addr == 0) {
3731 /* Invalid address */
3734 /* zero out the bzero area */
3735 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
3737 /* assure len is set */
3738 sin->sin_len = sizeof(struct sockaddr_in);
3740 #ifdef SCTP_DONT_DO_PRIVADDR_SCOPE
3741 stcb->ipv4_local_scope = 1;
3743 if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
3744 stcb->asoc.ipv4_local_scope = 1;
3746 #endif /* SCTP_DONT_DO_PRIVADDR_SCOPE */
3748 /* Validate the address is in scope */
3749 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) &&
3750 (stcb->asoc.ipv4_local_scope == 0)) {
3760 struct sockaddr_in6 *sin6;
3762 sin6 = (struct sockaddr_in6 *)newaddr;
3763 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3764 /* Invalid address */
3767 /* assure len is set */
3768 sin6->sin6_len = sizeof(struct sockaddr_in6);
3770 if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) {
3771 stcb->asoc.loopback_scope = 1;
3772 stcb->asoc.local_scope = 0;
3773 stcb->asoc.ipv4_local_scope = 1;
3774 stcb->asoc.site_scope = 1;
3775 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
3777 * If the new destination is a
3778 * LINK_LOCAL we must have common
3779 * site scope. Don't set the local
3780 * scope since we may not share all
3781 * links, only loopback can do this.
3782 * Links on the local network would
3783 * also be on our private network
3786 stcb->asoc.ipv4_local_scope = 1;
3787 stcb->asoc.site_scope = 1;
3788 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
3790 * If the new destination is
3791 * SITE_LOCAL then we must have site
3794 stcb->asoc.site_scope = 1;
3797 /* Validate the address is in scope */
3798 if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) &&
3799 (stcb->asoc.loopback_scope == 0)) {
3801 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
3802 (stcb->asoc.local_scope == 0)) {
3804 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
3805 (stcb->asoc.site_scope == 0)) {
3813 /* not supported family type */
3816 net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets);
3820 SCTP_INCR_RADDR_COUNT();
3821 bzero(net, sizeof(struct sctp_nets));
3822 (void)SCTP_GETTIME_TIMEVAL(&net->start_time);
3823 memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len);
3824 switch (newaddr->sa_family) {
3827 ((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport;
3832 ((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport;
3838 net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id);
3839 if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) {
3840 stcb->asoc.loopback_scope = 1;
3841 stcb->asoc.ipv4_local_scope = 1;
3842 stcb->asoc.local_scope = 0;
3843 stcb->asoc.site_scope = 1;
3846 net->failure_threshold = stcb->asoc.def_net_failure;
3847 net->pf_threshold = stcb->asoc.def_net_pf_threshold;
3848 if (addr_inscope == 0) {
3849 net->dest_state = (SCTP_ADDR_REACHABLE |
3850 SCTP_ADDR_OUT_OF_SCOPE);
3852 if (from == SCTP_ADDR_IS_CONFIRMED)
3853 /* SCTP_ADDR_IS_CONFIRMED is passed by connect_x */
3854 net->dest_state = SCTP_ADDR_REACHABLE;
3856 net->dest_state = SCTP_ADDR_REACHABLE |
3857 SCTP_ADDR_UNCONFIRMED;
3860 * We set this to 0, the timer code knows that this means its an
3863 net->rto_needed = 1;
3865 net->RTO_measured = 0;
3866 stcb->asoc.numnets++;
3868 net->cwr_window_tsn = net->last_cwr_tsn = stcb->asoc.sending_seq - 1;
3869 net->port = stcb->asoc.port;
3870 net->dscp = stcb->asoc.default_dscp;
3872 net->flowlabel = stcb->asoc.default_flowlabel;
3874 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
3875 net->dest_state |= SCTP_ADDR_NOHB;
3877 net->dest_state &= ~SCTP_ADDR_NOHB;
3879 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DO_NOT_PMTUD)) {
3880 net->dest_state |= SCTP_ADDR_NO_PMTUD;
3882 net->dest_state &= ~SCTP_ADDR_NO_PMTUD;
3884 net->heart_beat_delay = stcb->asoc.heart_beat_delay;
3885 /* Init the timer structure */
3886 SCTP_OS_TIMER_INIT(&net->rxt_timer.timer);
3887 SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer);
3888 SCTP_OS_TIMER_INIT(&net->hb_timer.timer);
3890 /* Now generate a route for this guy */
3892 /* KAME hack: embed scopeid */
3893 if (newaddr->sa_family == AF_INET6) {
3894 struct sockaddr_in6 *sin6;
3896 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3897 (void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone));
3898 sin6->sin6_scope_id = 0;
3901 SCTP_RTALLOC((sctp_route_t *) & net->ro, stcb->asoc.vrf_id);
3903 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) {
3904 /* Get source address */
3905 net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep,
3907 (sctp_route_t *) & net->ro,
3911 /* Now get the interface MTU */
3912 if (net->ro._s_addr && net->ro._s_addr->ifn_p) {
3913 net->mtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p);
3918 rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_rt);
3921 * Start things off to match mtu of
3924 SCTP_SET_MTU_OF_ROUTE(&net->ro._l_addr.sa,
3925 net->ro.ro_rt, net->mtu);
3928 * we take the route mtu over the interface,
3929 * since the route may be leading out the
3930 * loopback, or a different interface.
3936 if (net->mtu == 0) {
3937 switch (newaddr->sa_family) {
3940 net->mtu = SCTP_DEFAULT_MTU;
3953 net->mtu -= (uint32_t) sizeof(struct udphdr);
3955 if (from == SCTP_ALLOC_ASOC) {
3956 stcb->asoc.smallest_mtu = net->mtu;
3958 if (stcb->asoc.smallest_mtu > net->mtu) {
3959 stcb->asoc.smallest_mtu = net->mtu;
3962 if (newaddr->sa_family == AF_INET6) {
3963 struct sockaddr_in6 *sin6;
3965 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3966 (void)sa6_recoverscope(sin6);
3970 /* JRS - Use the congestion control given in the CC module */
3971 if (stcb->asoc.cc_functions.sctp_set_initial_cc_param != NULL)
3972 (*stcb->asoc.cc_functions.sctp_set_initial_cc_param) (stcb, net);
3975 * CMT: CUC algo - set find_pseudo_cumack to TRUE (1) at beginning
3976 * of assoc (2005/06/27, iyengar@cis.udel.edu)
3978 net->find_pseudo_cumack = 1;
3979 net->find_rtx_pseudo_cumack = 1;
3980 net->src_addr_selected = 0;
3981 /* Choose an initial flowid. */
3982 net->flowid = stcb->asoc.my_vtag ^
3983 ntohs(stcb->rport) ^
3984 ntohs(stcb->sctp_ep->sctp_lport);
3991 netfirst = TAILQ_FIRST(&stcb->asoc.nets);
3992 if (net->ro.ro_rt == NULL) {
3993 /* Since we have no route put it at the back */
3994 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
3995 } else if (netfirst == NULL) {
3996 /* We are the first one in the pool. */
3997 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
3998 } else if (netfirst->ro.ro_rt == NULL) {
4000 * First one has NO route. Place this one ahead of the first
4003 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4004 } else if (net->ro.ro_rt->rt_ifp != netfirst->ro.ro_rt->rt_ifp) {
4006 * This one has a different interface than the one at the
4007 * top of the list. Place it ahead.
4009 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4012 * Ok we have the same interface as the first one. Move
4013 * forward until we find either a) one with a NULL route...
4014 * insert ahead of that b) one with a different ifp.. insert
4015 * after that. c) end of the list.. insert at the tail.
4017 struct sctp_nets *netlook;
4020 netlook = TAILQ_NEXT(netfirst, sctp_next);
4021 if (netlook == NULL) {
4022 /* End of the list */
4023 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4025 } else if (netlook->ro.ro_rt == NULL) {
4026 /* next one has NO route */
4027 TAILQ_INSERT_BEFORE(netfirst, net, sctp_next);
4029 } else if (netlook->ro.ro_rt->rt_ifp != net->ro.ro_rt->rt_ifp) {
4030 TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook,
4036 } while (netlook != NULL);
4039 /* got to have a primary set */
4040 if (stcb->asoc.primary_destination == 0) {
4041 stcb->asoc.primary_destination = net;
4042 } else if ((stcb->asoc.primary_destination->ro.ro_rt == NULL) &&
4044 ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
4045 /* No route to current primary adopt new primary */
4046 stcb->asoc.primary_destination = net;
4048 /* Validate primary is first */
4049 net = TAILQ_FIRST(&stcb->asoc.nets);
4050 if ((net != stcb->asoc.primary_destination) &&
4051 (stcb->asoc.primary_destination)) {
4053 * first one on the list is NOT the primary sctp_cmpaddr()
4054 * is much more efficient if the primary is the first on the
4057 TAILQ_REMOVE(&stcb->asoc.nets,
4058 stcb->asoc.primary_destination, sctp_next);
4059 TAILQ_INSERT_HEAD(&stcb->asoc.nets,
4060 stcb->asoc.primary_destination, sctp_next);
4067 sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
4070 struct sctpasochead *head;
4071 struct sctp_tcb *lstcb;
4073 SCTP_INP_WLOCK(inp);
4075 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
4077 SCTP_INP_WUNLOCK(inp);
4081 * We don't allow assoc id to be one of SCTP_FUTURE_ASSOC,
4082 * SCTP_CURRENT_ASSOC and SCTP_ALL_ASSOC.
4084 if (inp->sctp_associd_counter <= SCTP_ALL_ASSOC) {
4085 inp->sctp_associd_counter = SCTP_ALL_ASSOC + 1;
4087 id = inp->sctp_associd_counter;
4088 inp->sctp_associd_counter++;
4089 lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t) id, 0);
4093 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
4094 LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash);
4095 stcb->asoc.in_asocid_hash = 1;
4096 SCTP_INP_WUNLOCK(inp);
4101 * allocate an association and add it to the endpoint. The caller must be
4102 * careful to add all additional addresses once they are know right away or
4103 * else the assoc will be may experience a blackout scenario.
4106 sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
4107 int *error, uint32_t override_tag, uint32_t vrf_id,
4111 /* note the p argument is only valid in unbound sockets */
4113 struct sctp_tcb *stcb;
4114 struct sctp_association *asoc;
4115 struct sctpasochead *head;
4120 * Assumption made here: Caller has done a
4121 * sctp_findassociation_ep_addr(ep, addr's); to make sure the
4122 * address does not exist already.
4124 if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) {
4125 /* Hit max assoc, sorry no more */
4126 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4130 if (firstaddr == NULL) {
4131 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4135 SCTP_INP_RLOCK(inp);
4136 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
4137 ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) ||
4138 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4140 * If its in the TCP pool, its NOT allowed to create an
4141 * association. The parent listener needs to call
4142 * sctp_aloc_assoc.. or the one-2-many socket. If a peeled
4143 * off, or connected one does this.. its an error.
4145 SCTP_INP_RUNLOCK(inp);
4146 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4150 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
4151 (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)) {
4152 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) ||
4153 (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED)) {
4154 SCTP_INP_RUNLOCK(inp);
4155 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4160 SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:");
4163 SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr);
4164 switch (firstaddr->sa_family) {
4167 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4168 ntohs(((struct sockaddr_in *)firstaddr)->sin_port));
4173 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4174 ntohs(((struct sockaddr_in6 *)firstaddr)->sin6_port));
4181 SCTPDBG(SCTP_DEBUG_PCB3, "None\n");
4183 #endif /* SCTP_DEBUG */
4184 switch (firstaddr->sa_family) {
4188 struct sockaddr_in *sin;
4190 sin = (struct sockaddr_in *)firstaddr;
4191 if ((ntohs(sin->sin_port) == 0) ||
4192 (sin->sin_addr.s_addr == INADDR_ANY) ||
4193 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
4194 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
4195 /* Invalid address */
4196 SCTP_INP_RUNLOCK(inp);
4197 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4201 rport = sin->sin_port;
4208 struct sockaddr_in6 *sin6;
4210 sin6 = (struct sockaddr_in6 *)firstaddr;
4211 if ((ntohs(sin6->sin6_port) == 0) ||
4212 IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
4213 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
4214 /* Invalid address */
4215 SCTP_INP_RUNLOCK(inp);
4216 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4220 rport = sin6->sin6_port;
4225 /* not supported family type */
4226 SCTP_INP_RUNLOCK(inp);
4227 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4231 SCTP_INP_RUNLOCK(inp);
4232 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4234 * If you have not performed a bind, then we need to do the
4235 * ephemeral bind for you.
4237 if ((err = sctp_inpcb_bind(inp->sctp_socket,
4238 (struct sockaddr *)NULL,
4239 (struct sctp_ifa *)NULL,
4242 /* bind error, probably perm */
4247 stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb);
4249 /* out of memory? */
4250 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
4254 SCTP_INCR_ASOC_COUNT();
4256 bzero(stcb, sizeof(*stcb));
4259 asoc->assoc_id = sctp_aloc_a_assoc_id(inp, stcb);
4260 SCTP_TCB_LOCK_INIT(stcb);
4261 SCTP_TCB_SEND_LOCK_INIT(stcb);
4262 stcb->rport = rport;
4263 /* setup back pointer's */
4264 stcb->sctp_ep = inp;
4265 stcb->sctp_socket = inp->sctp_socket;
4266 if ((err = sctp_init_asoc(inp, stcb, override_tag, vrf_id))) {
4268 SCTP_TCB_LOCK_DESTROY(stcb);
4269 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4270 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4271 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4272 SCTP_DECR_ASOC_COUNT();
4277 SCTP_INP_INFO_WLOCK();
4278 SCTP_INP_WLOCK(inp);
4279 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
4280 /* inpcb freed while alloc going on */
4281 SCTP_TCB_LOCK_DESTROY(stcb);
4282 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4283 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4284 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4285 SCTP_INP_WUNLOCK(inp);
4286 SCTP_INP_INFO_WUNLOCK();
4287 SCTP_DECR_ASOC_COUNT();
4288 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4292 SCTP_TCB_LOCK(stcb);
4294 /* now that my_vtag is set, add it to the hash */
4295 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))];
4296 /* put it in the bucket in the vtag hash of assoc's for the system */
4297 LIST_INSERT_HEAD(head, stcb, sctp_asocs);
4298 SCTP_INP_INFO_WUNLOCK();
4300 if ((err = sctp_add_remote_addr(stcb, firstaddr, NULL, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC))) {
4301 /* failure.. memory error? */
4302 if (asoc->strmout) {
4303 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4304 asoc->strmout = NULL;
4306 if (asoc->mapping_array) {
4307 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4308 asoc->mapping_array = NULL;
4310 if (asoc->nr_mapping_array) {
4311 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4312 asoc->nr_mapping_array = NULL;
4314 SCTP_DECR_ASOC_COUNT();
4315 SCTP_TCB_LOCK_DESTROY(stcb);
4316 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4317 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4318 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4319 SCTP_INP_WUNLOCK(inp);
4320 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4324 /* Init all the timers */
4325 SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer);
4326 SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer);
4327 SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer);
4328 SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer);
4329 SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer);
4330 SCTP_OS_TIMER_INIT(&asoc->delayed_event_timer.timer);
4331 SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer);
4333 LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist);
4334 /* now file the port under the hash as well */
4335 if (inp->sctp_tcbhash != NULL) {
4336 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport,
4337 inp->sctp_hashmark)];
4338 LIST_INSERT_HEAD(head, stcb, sctp_tcbhash);
4340 SCTP_INP_WUNLOCK(inp);
4341 SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", (void *)stcb);
4347 sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
4349 struct sctp_association *asoc;
4353 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4354 if (net == asoc->primary_destination) {
4356 struct sctp_nets *lnet;
4358 lnet = TAILQ_FIRST(&asoc->nets);
4360 * Mobility adaptation Ideally, if deleted destination is
4361 * the primary, it becomes a fast retransmission trigger by
4362 * the subsequent SET PRIMARY. (by micchie)
4364 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
4365 SCTP_MOBILITY_BASE) ||
4366 sctp_is_mobility_feature_on(stcb->sctp_ep,
4367 SCTP_MOBILITY_FASTHANDOFF)) {
4368 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n");
4369 if (asoc->deleted_primary != NULL) {
4370 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n");
4373 asoc->deleted_primary = net;
4374 atomic_add_int(&net->ref_count, 1);
4375 memset(&net->lastsa, 0, sizeof(net->lastsa));
4376 memset(&net->lastsv, 0, sizeof(net->lastsv));
4377 sctp_mobility_feature_on(stcb->sctp_ep,
4378 SCTP_MOBILITY_PRIM_DELETED);
4379 sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED,
4380 stcb->sctp_ep, stcb, NULL);
4383 /* Try to find a confirmed primary */
4384 asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0);
4386 if (net == asoc->last_data_chunk_from) {
4388 asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets);
4390 if (net == asoc->last_control_chunk_from) {
4392 asoc->last_control_chunk_from = NULL;
4394 if (net == stcb->asoc.alternate) {
4395 sctp_free_remote_addr(stcb->asoc.alternate);
4396 stcb->asoc.alternate = NULL;
4398 sctp_free_remote_addr(net);
4402 * remove a remote endpoint address from an association, it will fail if the
4403 * address does not exist.
4406 sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
4409 * Here we need to remove a remote address. This is quite simple, we
4410 * first find it in the list of address for the association
4411 * (tasoc->asoc.nets) and then if it is there, we do a LIST_REMOVE
4412 * on that item. Note we do not allow it to be removed if there are
4413 * no other addresses.
4415 struct sctp_association *asoc;
4416 struct sctp_nets *net, *nnet;
4420 /* locate the address */
4421 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
4422 if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) {
4425 if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr,
4427 /* we found the guy */
4428 if (asoc->numnets < 2) {
4429 /* Must have at LEAST two remote addresses */
4432 sctp_remove_net(stcb, net);
4442 sctp_delete_from_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4444 struct sctpvtaghead *chain;
4445 struct sctp_tagblock *twait_block;
4449 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4450 if (!LIST_EMPTY(chain)) {
4451 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4452 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4453 if ((twait_block->vtag_block[i].v_tag == tag) &&
4454 (twait_block->vtag_block[i].lport == lport) &&
4455 (twait_block->vtag_block[i].rport == rport)) {
4456 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4457 twait_block->vtag_block[i].v_tag = 0;
4458 twait_block->vtag_block[i].lport = 0;
4459 twait_block->vtag_block[i].rport = 0;
4471 sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4473 struct sctpvtaghead *chain;
4474 struct sctp_tagblock *twait_block;
4478 SCTP_INP_INFO_WLOCK();
4479 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4480 if (!LIST_EMPTY(chain)) {
4481 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4482 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4483 if ((twait_block->vtag_block[i].v_tag == tag) &&
4484 (twait_block->vtag_block[i].lport == lport) &&
4485 (twait_block->vtag_block[i].rport == rport)) {
4494 SCTP_INP_INFO_WUNLOCK();
4500 sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport)
4502 struct sctpvtaghead *chain;
4503 struct sctp_tagblock *twait_block;
4511 (void)SCTP_GETTIME_TIMEVAL(&now);
4512 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4514 if (!LIST_EMPTY(chain)) {
4515 /* Block(s) present, lets find space, and expire on the fly */
4516 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4517 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4518 if ((twait_block->vtag_block[i].v_tag == 0) &&
4520 twait_block->vtag_block[i].tv_sec_at_expire =
4522 twait_block->vtag_block[i].v_tag = tag;
4523 twait_block->vtag_block[i].lport = lport;
4524 twait_block->vtag_block[i].rport = rport;
4526 } else if ((twait_block->vtag_block[i].v_tag) &&
4527 ((long)twait_block->vtag_block[i].tv_sec_at_expire < now.tv_sec)) {
4528 /* Audit expires this guy */
4529 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4530 twait_block->vtag_block[i].v_tag = 0;
4531 twait_block->vtag_block[i].lport = 0;
4532 twait_block->vtag_block[i].rport = 0;
4534 /* Reuse it for my new tag */
4535 twait_block->vtag_block[i].tv_sec_at_expire = now.tv_sec + time;
4536 twait_block->vtag_block[i].v_tag = tag;
4537 twait_block->vtag_block[i].lport = lport;
4538 twait_block->vtag_block[i].rport = rport;
4545 * We only do up to the block where we can
4546 * place our tag for audits
4552 /* Need to add a new block to chain */
4554 SCTP_MALLOC(twait_block, struct sctp_tagblock *,
4555 sizeof(struct sctp_tagblock), SCTP_M_TIMW);
4556 if (twait_block == NULL) {
4558 panic("Can not alloc tagblock");
4562 memset(twait_block, 0, sizeof(struct sctp_tagblock));
4563 LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock);
4564 twait_block->vtag_block[0].tv_sec_at_expire = now.tv_sec + time;
4565 twait_block->vtag_block[0].v_tag = tag;
4566 twait_block->vtag_block[0].lport = lport;
4567 twait_block->vtag_block[0].rport = rport;
4574 * Free the association after un-hashing the remote port. This
4575 * function ALWAYS returns holding NO LOCK on the stcb. It DOES
4576 * expect that the input to this function IS a locked TCB.
4577 * It will return 0, if it did NOT destroy the association (instead
4578 * it unlocks it. It will return NON-zero if it either destroyed the
4579 * association OR the association is already destroyed.
4582 sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
4585 struct sctp_association *asoc;
4586 struct sctp_nets *net, *nnet;
4587 struct sctp_laddr *laddr, *naddr;
4588 struct sctp_tmit_chunk *chk, *nchk;
4589 struct sctp_asconf_addr *aparam, *naparam;
4590 struct sctp_asconf_ack *aack, *naack;
4591 struct sctp_stream_reset_list *strrst, *nstrrst;
4592 struct sctp_queued_to_read *sq, *nsq;
4593 struct sctp_stream_queue_pending *sp, *nsp;
4594 sctp_sharedkey_t *shared_key, *nshared_key;
4597 /* first, lets purge the entry from the hash table. */
4599 #ifdef SCTP_LOG_CLOSING
4600 sctp_log_closing(inp, stcb, 6);
4602 if (stcb->asoc.state == 0) {
4603 #ifdef SCTP_LOG_CLOSING
4604 sctp_log_closing(inp, NULL, 7);
4606 /* there is no asoc, really TSNH :-0 */
4609 if (stcb->asoc.alternate) {
4610 sctp_free_remote_addr(stcb->asoc.alternate);
4611 stcb->asoc.alternate = NULL;
4614 if (stcb->freed_from_where == 0) {
4615 /* Only record the first place free happened from */
4616 stcb->freed_from_where = from_location;
4621 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4622 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4623 /* nothing around */
4626 so = inp->sctp_socket;
4629 * We used timer based freeing if a reader or writer is in the way.
4630 * So we first check if we are actually being called from a timer,
4631 * if so we abort early if a reader or writer is still in the way.
4633 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
4634 (from_inpcbfree == SCTP_NORMAL_PROC)) {
4636 * is it the timer driving us? if so are the reader/writers
4639 if (stcb->asoc.refcnt) {
4640 /* nope, reader or writer in the way */
4641 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4642 /* no asoc destroyed */
4643 SCTP_TCB_UNLOCK(stcb);
4644 #ifdef SCTP_LOG_CLOSING
4645 sctp_log_closing(inp, stcb, 8);
4650 /* now clean up any other timers */
4651 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4652 asoc->dack_timer.self = NULL;
4653 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4655 * For stream reset we don't blast this unless
4656 * it is a str-reset timer, it might be the
4657 * free-asoc timer which we DON'T want to
4660 if (asoc->strreset_timer.type == SCTP_TIMER_TYPE_STRRESET)
4661 asoc->strreset_timer.self = NULL;
4662 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4663 asoc->asconf_timer.self = NULL;
4664 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4665 asoc->autoclose_timer.self = NULL;
4666 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4667 asoc->shut_guard_timer.self = NULL;
4668 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4669 asoc->delayed_event_timer.self = NULL;
4670 /* Mobility adaptation */
4671 (void)SCTP_OS_TIMER_STOP(&asoc->delete_prim_timer.timer);
4672 asoc->delete_prim_timer.self = NULL;
4673 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4674 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4675 net->rxt_timer.self = NULL;
4676 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4677 net->pmtu_timer.self = NULL;
4678 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4679 net->hb_timer.self = NULL;
4681 /* Now the read queue needs to be cleaned up (only once) */
4682 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) {
4683 stcb->asoc.state |= SCTP_STATE_ABOUT_TO_BE_FREED;
4684 SCTP_INP_READ_LOCK(inp);
4685 TAILQ_FOREACH(sq, &inp->read_queue, next) {
4686 if (sq->stcb == stcb) {
4687 sq->do_not_ref_stcb = 1;
4688 sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
4690 * If there is no end, there never will be
4693 if (sq->end_added == 0) {
4694 /* Held for PD-API clear that. */
4695 sq->pdapi_aborted = 1;
4696 sq->held_length = 0;
4697 if (sctp_stcb_is_feature_on(inp, stcb, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) {
4699 * Need to add a PD-API
4700 * aborted indication.
4701 * Setting the control_pdapi
4702 * assures that it will be
4703 * added right after this
4708 stcb->asoc.control_pdapi = sq;
4709 strseq = (sq->sinfo_stream << 16) | sq->sinfo_ssn;
4710 sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION,
4712 SCTP_PARTIAL_DELIVERY_ABORTED,
4715 stcb->asoc.control_pdapi = NULL;
4718 /* Add an end to wake them */
4722 SCTP_INP_READ_UNLOCK(inp);
4723 if (stcb->block_entry) {
4724 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET);
4725 stcb->block_entry->error = ECONNRESET;
4726 stcb->block_entry = NULL;
4729 if ((stcb->asoc.refcnt) || (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE)) {
4731 * Someone holds a reference OR the socket is unaccepted
4734 if ((stcb->asoc.refcnt) ||
4735 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4736 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4737 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4738 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4740 SCTP_TCB_UNLOCK(stcb);
4741 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4742 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4743 /* nothing around */
4746 /* Wake any reader/writers */
4747 sctp_sorwakeup(inp, so);
4748 sctp_sowwakeup(inp, so);
4750 #ifdef SCTP_LOG_CLOSING
4751 sctp_log_closing(inp, stcb, 9);
4753 /* no asoc destroyed */
4756 #ifdef SCTP_LOG_CLOSING
4757 sctp_log_closing(inp, stcb, 10);
4760 * When I reach here, no others want to kill the assoc yet.. and I
4761 * own the lock. Now its possible an abort comes in when I do the
4762 * lock exchange below to grab all the locks to do the final take
4763 * out. to prevent this we increment the count, which will start a
4764 * timer and blow out above thus assuring us that we hold exclusive
4765 * killing of the asoc. Note that after getting back the TCB lock we
4766 * will go ahead and increment the counter back up and stop any
4767 * timer a passing stranger may have started :-S
4769 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4770 atomic_add_int(&stcb->asoc.refcnt, 1);
4772 SCTP_TCB_UNLOCK(stcb);
4773 SCTP_INP_INFO_WLOCK();
4774 SCTP_INP_WLOCK(inp);
4775 SCTP_TCB_LOCK(stcb);
4777 /* Double check the GONE flag */
4778 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4779 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4780 /* nothing around */
4783 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
4784 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4786 * For TCP type we need special handling when we are
4787 * connected. We also include the peel'ed off ones to.
4789 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4790 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED;
4791 inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED;
4794 if (so->so_rcv.sb_cc == 0) {
4795 so->so_state &= ~(SS_ISCONNECTING |
4796 SS_ISDISCONNECTING |
4800 socantrcvmore_locked(so);
4801 sctp_sowwakeup(inp, so);
4802 sctp_sorwakeup(inp, so);
4808 * Make it invalid too, that way if its about to run it will abort
4811 /* re-increment the lock */
4812 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4813 atomic_add_int(&stcb->asoc.refcnt, -1);
4815 if (stcb->asoc.refcnt) {
4816 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4817 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4818 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4819 SCTP_INP_INFO_WUNLOCK();
4820 SCTP_INP_WUNLOCK(inp);
4822 SCTP_TCB_UNLOCK(stcb);
4826 if (inp->sctp_tcbhash) {
4827 LIST_REMOVE(stcb, sctp_tcbhash);
4829 if (stcb->asoc.in_asocid_hash) {
4830 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4832 /* Now lets remove it from the list of ALL associations in the EP */
4833 LIST_REMOVE(stcb, sctp_tcblist);
4834 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4835 SCTP_INP_INCR_REF(inp);
4836 SCTP_INP_WUNLOCK(inp);
4838 /* pull from vtag hash */
4839 LIST_REMOVE(stcb, sctp_asocs);
4840 sctp_add_vtag_to_timewait(asoc->my_vtag, SCTP_BASE_SYSCTL(sctp_vtag_time_wait),
4841 inp->sctp_lport, stcb->rport);
4844 * Now restop the timers to be sure this is paranoia at is finest!
4846 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4847 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4848 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4849 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4850 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4851 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4852 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4853 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4854 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4855 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4856 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4859 asoc->strreset_timer.type = SCTP_TIMER_TYPE_NONE;
4861 * The chunk lists and such SHOULD be empty but we check them just
4864 /* anything on the wheel needs to be removed */
4865 for (i = 0; i < asoc->streamoutcnt; i++) {
4866 struct sctp_stream_out *outs;
4868 outs = &asoc->strmout[i];
4869 /* now clean up any chunks here */
4870 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
4871 TAILQ_REMOVE(&outs->outqueue, sp, next);
4872 sctp_free_spbufspace(stcb, asoc, sp);
4875 /* Still an open socket - report */
4876 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
4877 0, (void *)sp, SCTP_SO_LOCKED);
4880 sctp_m_freem(sp->data);
4882 sp->tail_mbuf = NULL;
4887 sctp_free_remote_addr(sp->net);
4890 sctp_free_a_strmoq(stcb, sp, SCTP_SO_LOCKED);
4893 /* sa_ignore FREED_MEMORY */
4894 TAILQ_FOREACH_SAFE(strrst, &asoc->resetHead, next_resp, nstrrst) {
4895 TAILQ_REMOVE(&asoc->resetHead, strrst, next_resp);
4896 SCTP_FREE(strrst, SCTP_M_STRESET);
4898 TAILQ_FOREACH_SAFE(sq, &asoc->pending_reply_queue, next, nsq) {
4899 TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
4901 sctp_m_freem(sq->data);
4904 sctp_free_remote_addr(sq->whoFrom);
4907 /* Free the ctl entry */
4908 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
4909 SCTP_DECR_READQ_COUNT();
4910 /* sa_ignore FREED_MEMORY */
4912 TAILQ_FOREACH_SAFE(chk, &asoc->free_chunks, sctp_next, nchk) {
4913 TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next);
4915 sctp_m_freem(chk->data);
4918 if (chk->holds_key_ref)
4919 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4920 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4921 SCTP_DECR_CHK_COUNT();
4922 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1);
4923 asoc->free_chunk_cnt--;
4924 /* sa_ignore FREED_MEMORY */
4926 /* pending send queue SHOULD be empty */
4927 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
4928 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
4931 /* Still a socket? */
4932 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
4933 0, chk, SCTP_SO_LOCKED);
4936 sctp_m_freem(chk->data);
4940 if (chk->holds_key_ref)
4941 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4943 sctp_free_remote_addr(chk->whoTo);
4946 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4947 SCTP_DECR_CHK_COUNT();
4948 /* sa_ignore FREED_MEMORY */
4950 /* sent queue SHOULD be empty */
4951 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
4952 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
4955 /* Still a socket? */
4956 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
4957 0, chk, SCTP_SO_LOCKED);
4960 sctp_m_freem(chk->data);
4964 if (chk->holds_key_ref)
4965 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4966 sctp_free_remote_addr(chk->whoTo);
4967 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4968 SCTP_DECR_CHK_COUNT();
4969 /* sa_ignore FREED_MEMORY */
4971 /* control queue MAY not be empty */
4972 TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) {
4973 TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next);
4975 sctp_m_freem(chk->data);
4978 if (chk->holds_key_ref)
4979 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4980 sctp_free_remote_addr(chk->whoTo);
4981 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4982 SCTP_DECR_CHK_COUNT();
4983 /* sa_ignore FREED_MEMORY */
4985 /* ASCONF queue MAY not be empty */
4986 TAILQ_FOREACH_SAFE(chk, &asoc->asconf_send_queue, sctp_next, nchk) {
4987 TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next);
4989 sctp_m_freem(chk->data);
4992 if (chk->holds_key_ref)
4993 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4994 sctp_free_remote_addr(chk->whoTo);
4995 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4996 SCTP_DECR_CHK_COUNT();
4997 /* sa_ignore FREED_MEMORY */
4999 TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) {
5000 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
5002 sctp_m_freem(chk->data);
5005 if (chk->holds_key_ref)
5006 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5007 sctp_free_remote_addr(chk->whoTo);
5008 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5009 SCTP_DECR_CHK_COUNT();
5010 /* sa_ignore FREED_MEMORY */
5013 if (asoc->mapping_array) {
5014 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
5015 asoc->mapping_array = NULL;
5017 if (asoc->nr_mapping_array) {
5018 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
5019 asoc->nr_mapping_array = NULL;
5021 /* the stream outs */
5022 if (asoc->strmout) {
5023 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
5024 asoc->strmout = NULL;
5026 asoc->strm_realoutsize = asoc->streamoutcnt = 0;
5028 struct sctp_queued_to_read *ctl, *nctl;
5030 for (i = 0; i < asoc->streamincnt; i++) {
5031 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[i].inqueue, next, nctl) {
5032 TAILQ_REMOVE(&asoc->strmin[i].inqueue, ctl, next);
5033 sctp_free_remote_addr(ctl->whoFrom);
5035 sctp_m_freem(ctl->data);
5039 * We don't free the address here since all
5040 * the net's were freed above.
5042 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
5043 SCTP_DECR_READQ_COUNT();
5046 SCTP_FREE(asoc->strmin, SCTP_M_STRMI);
5047 asoc->strmin = NULL;
5049 asoc->streamincnt = 0;
5050 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
5052 if (SCTP_BASE_INFO(ipi_count_raddr) == 0) {
5053 panic("no net's left alloc'ed, or list points to itself");
5056 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
5057 sctp_free_remote_addr(net);
5059 LIST_FOREACH_SAFE(laddr, &asoc->sctp_restricted_addrs, sctp_nxt_addr, naddr) {
5060 /* sa_ignore FREED_MEMORY */
5061 sctp_remove_laddr(laddr);
5064 /* pending asconf (address) parameters */
5065 TAILQ_FOREACH_SAFE(aparam, &asoc->asconf_queue, next, naparam) {
5066 /* sa_ignore FREED_MEMORY */
5067 TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
5068 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
5070 TAILQ_FOREACH_SAFE(aack, &asoc->asconf_ack_sent, next, naack) {
5071 /* sa_ignore FREED_MEMORY */
5072 TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
5073 if (aack->data != NULL) {
5074 sctp_m_freem(aack->data);
5076 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
5078 /* clean up auth stuff */
5079 if (asoc->local_hmacs)
5080 sctp_free_hmaclist(asoc->local_hmacs);
5081 if (asoc->peer_hmacs)
5082 sctp_free_hmaclist(asoc->peer_hmacs);
5084 if (asoc->local_auth_chunks)
5085 sctp_free_chunklist(asoc->local_auth_chunks);
5086 if (asoc->peer_auth_chunks)
5087 sctp_free_chunklist(asoc->peer_auth_chunks);
5089 sctp_free_authinfo(&asoc->authinfo);
5091 LIST_FOREACH_SAFE(shared_key, &asoc->shared_keys, next, nshared_key) {
5092 LIST_REMOVE(shared_key, next);
5093 sctp_free_sharedkey(shared_key);
5094 /* sa_ignore FREED_MEMORY */
5097 /* Insert new items here :> */
5099 /* Get rid of LOCK */
5100 SCTP_TCB_LOCK_DESTROY(stcb);
5101 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
5102 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5103 SCTP_INP_INFO_WUNLOCK();
5104 SCTP_INP_RLOCK(inp);
5106 #ifdef SCTP_TRACK_FREED_ASOCS
5107 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5108 /* now clean up the tasoc itself */
5109 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5110 SCTP_DECR_ASOC_COUNT();
5112 LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist);
5115 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5116 SCTP_DECR_ASOC_COUNT();
5118 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5119 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5121 * If its NOT the inp_free calling us AND sctp_close
5122 * as been called, we call back...
5124 SCTP_INP_RUNLOCK(inp);
5126 * This will start the kill timer (if we are the
5127 * last one) since we hold an increment yet. But
5128 * this is the only safe way to do this since
5129 * otherwise if the socket closes at the same time
5130 * we are here we might collide in the cleanup.
5132 sctp_inpcb_free(inp,
5133 SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
5134 SCTP_CALLED_DIRECTLY_NOCMPSET);
5135 SCTP_INP_DECR_REF(inp);
5138 /* The socket is still open. */
5139 SCTP_INP_DECR_REF(inp);
5142 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5143 SCTP_INP_RUNLOCK(inp);
5146 /* destroyed the asoc */
5147 #ifdef SCTP_LOG_CLOSING
5148 sctp_log_closing(inp, NULL, 11);
5156 * determine if a destination is "reachable" based upon the addresses bound
5157 * to the current endpoint (e.g. only v4 or v6 currently bound)
5160 * FIX: if we allow assoc-level bindx(), then this needs to be fixed to use
5161 * assoc level v4/v6 flags, as the assoc *may* not have the same address
5162 * types bound as its endpoint
5165 sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
5167 struct sctp_inpcb *inp;
5171 * No locks here, the TCB, in all cases is already locked and an
5172 * assoc is up. There is either a INP lock by the caller applied (in
5173 * asconf case when deleting an address) or NOT in the HB case,
5174 * however if HB then the INP increment is up and the INP will not
5175 * be removed (on top of the fact that we have a TCB lock). So we
5176 * only want to read the sctp_flags, which is either bound-all or
5177 * not.. no protection needed since once an assoc is up you can't be
5178 * changing your binding.
5180 inp = stcb->sctp_ep;
5181 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5182 /* if bound all, destination is not restricted */
5184 * RRS: Question during lock work: Is this correct? If you
5185 * are bound-all you still might need to obey the V4--V6
5186 * flags??? IMO this bound-all stuff needs to be removed!
5190 /* NOTE: all "scope" checks are done when local addresses are added */
5191 switch (destaddr->sa_family) {
5194 answer = inp->ip_inp.inp.inp_vflag & INP_IPV6;
5199 answer = inp->ip_inp.inp.inp_vflag & INP_IPV4;
5203 /* invalid family, so it's unreachable */
5211 * update the inp_vflags on an endpoint
5214 sctp_update_ep_vflag(struct sctp_inpcb *inp)
5216 struct sctp_laddr *laddr;
5218 /* first clear the flag */
5219 inp->ip_inp.inp.inp_vflag = 0;
5220 /* set the flag based on addresses on the ep list */
5221 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5222 if (laddr->ifa == NULL) {
5223 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
5227 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
5230 switch (laddr->ifa->address.sa.sa_family) {
5233 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5238 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5248 * Add the address to the endpoint local address list There is nothing to be
5249 * done if we are bound to all addresses
5252 sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
5254 struct sctp_laddr *laddr;
5259 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5260 /* You are already bound to all. You have it already */
5264 if (ifa->address.sa.sa_family == AF_INET6) {
5265 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5266 /* Can't bind a non-useable addr. */
5271 /* first, is it already present? */
5272 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5273 if (laddr->ifa == ifa) {
5280 /* Not in the ep list */
5281 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action);
5285 /* update inp_vflag flags */
5286 switch (ifa->address.sa.sa_family) {
5289 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5294 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5306 * select a new (hopefully reachable) destination net (should only be used
5307 * when we deleted an ep addr that is the only usable source address to reach
5308 * the destination net)
5311 sctp_select_primary_destination(struct sctp_tcb *stcb)
5313 struct sctp_nets *net;
5315 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5316 /* for now, we'll just pick the first reachable one we find */
5317 if (net->dest_state & SCTP_ADDR_UNCONFIRMED)
5319 if (sctp_destination_is_reachable(stcb,
5320 (struct sockaddr *)&net->ro._l_addr)) {
5321 /* found a reachable destination */
5322 stcb->asoc.primary_destination = net;
5325 /* I can't there from here! ...we're gonna die shortly... */
5330 * Delete the address from the endpoint local address list There is nothing
5331 * to be done if we are bound to all addresses
5334 sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa)
5336 struct sctp_laddr *laddr;
5340 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5341 /* You are already bound to all. You have it already */
5344 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5345 if (laddr->ifa == ifa) {
5350 if (fnd && (inp->laddr_count < 2)) {
5351 /* can't delete unless there are at LEAST 2 addresses */
5356 * clean up any use of this address go through our
5357 * associations and clear any last_used_address that match
5358 * this one for each assoc, see if a new primary_destination
5361 struct sctp_tcb *stcb;
5363 /* clean up "next_addr_touse" */
5364 if (inp->next_addr_touse == laddr)
5365 /* delete this address */
5366 inp->next_addr_touse = NULL;
5368 /* clean up "last_used_address" */
5369 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5370 struct sctp_nets *net;
5372 SCTP_TCB_LOCK(stcb);
5373 if (stcb->asoc.last_used_address == laddr)
5374 /* delete this address */
5375 stcb->asoc.last_used_address = NULL;
5377 * Now spin through all the nets and purge any ref
5380 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5381 if (net->ro._s_addr &&
5382 (net->ro._s_addr->ifa == laddr->ifa)) {
5383 /* Yep, purge src address selected */
5386 /* delete this address if cached */
5390 net->ro.ro_rt = NULL;
5392 sctp_free_ifa(net->ro._s_addr);
5393 net->ro._s_addr = NULL;
5394 net->src_addr_selected = 0;
5397 SCTP_TCB_UNLOCK(stcb);
5398 } /* for each tcb */
5399 /* remove it from the ep list */
5400 sctp_remove_laddr(laddr);
5402 /* update inp_vflag flags */
5403 sctp_update_ep_vflag(inp);
5409 * Add the address to the TCB local address restricted list.
5410 * This is a "pending" address list (eg. addresses waiting for an
5411 * ASCONF-ACK response) and cannot be used as a valid source address.
5414 sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5416 struct sctp_laddr *laddr;
5417 struct sctpladdr *list;
5420 * Assumes TCB is locked.. and possibly the INP. May need to
5421 * confirm/fix that if we need it and is not the case.
5423 list = &stcb->asoc.sctp_restricted_addrs;
5426 if (ifa->address.sa.sa_family == AF_INET6) {
5427 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5428 /* Can't bind a non-existent addr. */
5433 /* does the address already exist? */
5434 LIST_FOREACH(laddr, list, sctp_nxt_addr) {
5435 if (laddr->ifa == ifa) {
5440 /* add to the list */
5441 (void)sctp_insert_laddr(list, ifa, 0);
5446 * insert an laddr entry with the given ifa for the desired list
5449 sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
5451 struct sctp_laddr *laddr;
5453 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
5454 if (laddr == NULL) {
5455 /* out of memory? */
5456 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
5459 SCTP_INCR_LADDR_COUNT();
5460 bzero(laddr, sizeof(*laddr));
5461 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
5463 laddr->action = act;
5464 atomic_add_int(&ifa->refcount, 1);
5466 LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr);
5472 * Remove an laddr entry from the local address list (on an assoc)
5475 sctp_remove_laddr(struct sctp_laddr *laddr)
5478 /* remove from the list */
5479 LIST_REMOVE(laddr, sctp_nxt_addr);
5480 sctp_free_ifa(laddr->ifa);
5481 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr);
5482 SCTP_DECR_LADDR_COUNT();
5486 * Remove a local address from the TCB local address restricted list
5489 sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5491 struct sctp_inpcb *inp;
5492 struct sctp_laddr *laddr;
5495 * This is called by asconf work. It is assumed that a) The TCB is
5496 * locked and b) The INP is locked. This is true in as much as I can
5497 * trace through the entry asconf code where I did these locks.
5498 * Again, the ASCONF code is a bit different in that it does lock
5499 * the INP during its work often times. This must be since we don't
5500 * want other proc's looking up things while what they are looking
5501 * up is changing :-D
5504 inp = stcb->sctp_ep;
5505 /* if subset bound and don't allow ASCONF's, can't delete last */
5506 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
5507 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
5508 if (stcb->sctp_ep->laddr_count < 2) {
5509 /* can't delete last address */
5513 LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
5514 /* remove the address if it exists */
5515 if (laddr->ifa == NULL)
5517 if (laddr->ifa == ifa) {
5518 sctp_remove_laddr(laddr);
5523 /* address not found! */
5528 * Temporarily remove for __APPLE__ until we use the Tiger equivalents
5531 static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;
5532 static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR;
5536 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5537 struct sctp_mcore_ctrl *sctp_mcore_workers = NULL;
5538 int *sctp_cpuarry = NULL;
5540 sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use)
5542 /* Queue a packet to a processor for the specified core */
5543 struct sctp_mcore_queue *qent;
5544 struct sctp_mcore_ctrl *wkq;
5547 if (sctp_mcore_workers == NULL) {
5548 /* Something went way bad during setup */
5549 sctp_input_with_port(m, off, 0);
5552 SCTP_MALLOC(qent, struct sctp_mcore_queue *,
5553 (sizeof(struct sctp_mcore_queue)),
5556 /* This is trouble */
5557 sctp_input_with_port(m, off, 0);
5564 wkq = &sctp_mcore_workers[cpu_to_use];
5565 SCTP_MCORE_QLOCK(wkq);
5567 TAILQ_INSERT_TAIL(&wkq->que, qent, next);
5568 if (wkq->running == 0) {
5571 SCTP_MCORE_QUNLOCK(wkq);
5573 wakeup(&wkq->running);
5578 sctp_mcore_thread(void *arg)
5581 struct sctp_mcore_ctrl *wkq;
5582 struct sctp_mcore_queue *qent;
5584 wkq = (struct sctp_mcore_ctrl *)arg;
5588 /* Wait for first tickle */
5589 SCTP_MCORE_LOCK(wkq);
5591 msleep(&wkq->running,
5593 0, "wait for pkt", 0);
5594 SCTP_MCORE_UNLOCK(wkq);
5596 /* Bind to our cpu */
5597 thread_lock(curthread);
5598 sched_bind(curthread, wkq->cpuid);
5599 thread_unlock(curthread);
5601 /* Now lets start working */
5602 SCTP_MCORE_LOCK(wkq);
5603 /* Now grab lock and go */
5605 SCTP_MCORE_QLOCK(wkq);
5608 qent = TAILQ_FIRST(&wkq->que);
5610 TAILQ_REMOVE(&wkq->que, qent, next);
5611 SCTP_MCORE_QUNLOCK(wkq);
5612 CURVNET_SET(qent->vn);
5616 SCTP_FREE(qent, SCTP_M_MCORE);
5618 sctp_input_with_port(m, off, 0);
5620 SCTP_PRINTF("V6 not yet supported\n");
5624 SCTP_MCORE_QLOCK(wkq);
5627 if (!TAILQ_EMPTY(&wkq->que)) {
5630 SCTP_MCORE_QUNLOCK(wkq);
5631 msleep(&wkq->running,
5633 0, "wait for pkt", 0);
5638 sctp_startup_mcore_threads(void)
5645 if (sctp_mcore_workers != NULL) {
5647 * Already been here in some previous vnet?
5651 SCTP_MALLOC(sctp_mcore_workers, struct sctp_mcore_ctrl *,
5652 ((mp_maxid + 1) * sizeof(struct sctp_mcore_ctrl)),
5654 if (sctp_mcore_workers == NULL) {
5658 memset(sctp_mcore_workers, 0, ((mp_maxid + 1) *
5659 sizeof(struct sctp_mcore_ctrl)));
5660 /* Init the structures */
5661 for (i = 0; i <= mp_maxid; i++) {
5662 TAILQ_INIT(&sctp_mcore_workers[i].que);
5663 SCTP_MCORE_LOCK_INIT(&sctp_mcore_workers[i]);
5664 SCTP_MCORE_QLOCK_INIT(&sctp_mcore_workers[i]);
5665 sctp_mcore_workers[i].cpuid = i;
5667 if (sctp_cpuarry == NULL) {
5668 SCTP_MALLOC(sctp_cpuarry, int *,
5669 (mp_ncpus * sizeof(int)),
5673 sctp_cpuarry[i] = cpu;
5677 /* Now start them all */
5679 (void)kproc_create(sctp_mcore_thread,
5680 (void *)&sctp_mcore_workers[cpu],
5681 &sctp_mcore_workers[cpu].thread_proc,
5695 * SCTP initialization for the PCB structures should be called by
5696 * the sctp_init() funciton.
5701 if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) {
5702 /* error I was called twice */
5705 SCTP_BASE_VAR(sctp_pcb_initialized) = 1;
5707 #if defined(SCTP_LOCAL_TRACE_BUF)
5708 bzero(&SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));
5710 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5711 SCTP_MALLOC(SCTP_BASE_STATS, struct sctpstat *,
5712 ((mp_maxid + 1) * sizeof(struct sctpstat)),
5715 (void)SCTP_GETTIME_TIMEVAL(&tv);
5716 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5717 bzero(SCTP_BASE_STATS, (sizeof(struct sctpstat) * (mp_maxid + 1)));
5718 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t) tv.tv_sec;
5719 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t) tv.tv_usec;
5721 bzero(&SCTP_BASE_STATS, sizeof(struct sctpstat));
5722 SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t) tv.tv_sec;
5723 SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t) tv.tv_usec;
5725 /* init the empty list of (All) Endpoints */
5726 LIST_INIT(&SCTP_BASE_INFO(listhead));
5729 /* init the hash table of endpoints */
5730 TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize));
5731 TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize));
5732 TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale));
5733 SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31),
5734 &SCTP_BASE_INFO(hashasocmark));
5735 SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5736 &SCTP_BASE_INFO(hashmark));
5737 SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5738 &SCTP_BASE_INFO(hashtcpmark));
5739 SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize);
5742 SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH,
5743 &SCTP_BASE_INFO(hashvrfmark));
5745 SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE,
5746 &SCTP_BASE_INFO(vrf_ifn_hashmark));
5747 /* init the zones */
5749 * FIX ME: Should check for NULL returns, but if it does fail we are
5750 * doomed to panic anyways... add later maybe.
5752 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep",
5753 sizeof(struct sctp_inpcb), maxsockets);
5755 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc",
5756 sizeof(struct sctp_tcb), sctp_max_number_of_assoc);
5758 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr",
5759 sizeof(struct sctp_laddr),
5760 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5762 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr",
5763 sizeof(struct sctp_nets),
5764 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5766 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk",
5767 sizeof(struct sctp_tmit_chunk),
5768 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5770 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq",
5771 sizeof(struct sctp_queued_to_read),
5772 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5774 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out",
5775 sizeof(struct sctp_stream_queue_pending),
5776 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5778 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf",
5779 sizeof(struct sctp_asconf),
5780 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5782 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack",
5783 sizeof(struct sctp_asconf_ack),
5784 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5787 /* Master Lock INIT for info structure */
5788 SCTP_INP_INFO_LOCK_INIT();
5789 SCTP_STATLOG_INIT_LOCK();
5791 SCTP_IPI_COUNT_INIT();
5792 SCTP_IPI_ADDR_INIT();
5793 #ifdef SCTP_PACKET_LOGGING
5794 SCTP_IP_PKTLOG_INIT();
5796 LIST_INIT(&SCTP_BASE_INFO(addr_wq));
5798 SCTP_WQ_ADDR_INIT();
5799 /* not sure if we need all the counts */
5800 SCTP_BASE_INFO(ipi_count_ep) = 0;
5801 /* assoc/tcb zone info */
5802 SCTP_BASE_INFO(ipi_count_asoc) = 0;
5803 /* local addrlist zone info */
5804 SCTP_BASE_INFO(ipi_count_laddr) = 0;
5805 /* remote addrlist zone info */
5806 SCTP_BASE_INFO(ipi_count_raddr) = 0;
5808 SCTP_BASE_INFO(ipi_count_chunk) = 0;
5810 /* socket queue zone info */
5811 SCTP_BASE_INFO(ipi_count_readq) = 0;
5813 /* stream out queue cont */
5814 SCTP_BASE_INFO(ipi_count_strmoq) = 0;
5816 SCTP_BASE_INFO(ipi_free_strmoq) = 0;
5817 SCTP_BASE_INFO(ipi_free_chunks) = 0;
5819 SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer));
5821 /* Init the TIMEWAIT list */
5822 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5823 LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]);
5826 sctp_startup_iterator();
5828 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5829 sctp_startup_mcore_threads();
5833 * INIT the default VRF which for BSD is the only one, other O/S's
5834 * may have more. But initially they must start with one and then
5835 * add the VRF's as addresses are added.
5837 sctp_init_vrf_list(SCTP_DEFAULT_VRF);
5841 * Assumes that the SCTP_BASE_INFO() lock is NOT held.
5844 sctp_pcb_finish(void)
5846 struct sctp_vrflist *vrf_bucket;
5847 struct sctp_vrf *vrf, *nvrf;
5848 struct sctp_ifn *ifn, *nifn;
5849 struct sctp_ifa *ifa, *nifa;
5850 struct sctpvtaghead *chain;
5851 struct sctp_tagblock *twait_block, *prev_twait_block;
5852 struct sctp_laddr *wi, *nwi;
5856 * Free BSD the it thread never exits but we do clean up. The only
5857 * way freebsd reaches here if we have VRF's but we still add the
5858 * ifdef to make it compile on old versions.
5861 struct sctp_iterator *it, *nit;
5863 SCTP_IPI_ITERATOR_WQ_LOCK();
5864 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
5865 if (it->vn != curvnet) {
5868 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
5869 if (it->function_atend != NULL) {
5870 (*it->function_atend) (it->pointer, it->val);
5872 SCTP_FREE(it, SCTP_M_ITER);
5874 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5875 SCTP_ITERATOR_LOCK();
5876 if ((sctp_it_ctl.cur_it) &&
5877 (sctp_it_ctl.cur_it->vn == curvnet)) {
5878 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
5880 SCTP_ITERATOR_UNLOCK();
5883 SCTP_OS_TIMER_STOP(&SCTP_BASE_INFO(addr_wq_timer.timer));
5884 SCTP_WQ_ADDR_LOCK();
5885 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
5886 LIST_REMOVE(wi, sctp_nxt_addr);
5887 SCTP_DECR_LADDR_COUNT();
5888 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi);
5890 SCTP_WQ_ADDR_UNLOCK();
5893 * free the vrf/ifn/ifa lists and hashes (be sure address monitor is
5896 vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))];
5897 LIST_FOREACH_SAFE(vrf, vrf_bucket, next_vrf, nvrf) {
5898 LIST_FOREACH_SAFE(ifn, &vrf->ifnlist, next_ifn, nifn) {
5899 LIST_FOREACH_SAFE(ifa, &ifn->ifalist, next_ifa, nifa) {
5901 LIST_REMOVE(ifa, next_bucket);
5902 LIST_REMOVE(ifa, next_ifa);
5903 SCTP_FREE(ifa, SCTP_M_IFA);
5906 LIST_REMOVE(ifn, next_bucket);
5907 LIST_REMOVE(ifn, next_ifn);
5908 SCTP_FREE(ifn, SCTP_M_IFN);
5910 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
5912 LIST_REMOVE(vrf, next_vrf);
5913 SCTP_FREE(vrf, SCTP_M_VRF);
5915 /* free the vrf hashes */
5916 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark));
5917 SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark));
5920 * free the TIMEWAIT list elements malloc'd in the function
5921 * sctp_add_vtag_to_timewait()...
5923 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5924 chain = &SCTP_BASE_INFO(vtag_timewait)[i];
5925 if (!LIST_EMPTY(chain)) {
5926 prev_twait_block = NULL;
5927 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
5928 if (prev_twait_block) {
5929 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
5931 prev_twait_block = twait_block;
5933 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
5937 /* free the locks and mutexes */
5938 #ifdef SCTP_PACKET_LOGGING
5939 SCTP_IP_PKTLOG_DESTROY();
5941 SCTP_IPI_ADDR_DESTROY();
5942 SCTP_STATLOG_DESTROY();
5943 SCTP_INP_INFO_LOCK_DESTROY();
5945 SCTP_WQ_ADDR_DESTROY();
5947 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep));
5948 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc));
5949 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr));
5950 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net));
5951 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk));
5952 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq));
5953 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq));
5954 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf));
5955 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack));
5956 /* Get rid of other stuff to */
5957 if (SCTP_BASE_INFO(sctp_asochash) != NULL)
5958 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark));
5959 if (SCTP_BASE_INFO(sctp_ephash) != NULL)
5960 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark));
5961 if (SCTP_BASE_INFO(sctp_tcpephash) != NULL)
5962 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark));
5963 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5964 SCTP_FREE(SCTP_BASE_STATS, SCTP_M_MCORE);
5970 sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m,
5971 int offset, int limit,
5972 struct sockaddr *src, struct sockaddr *dst,
5973 struct sockaddr *altsa)
5976 * grub through the INIT pulling addresses and loading them to the
5977 * nets structure in the asoc. The from address in the mbuf should
5978 * also be loaded (if it is not already). This routine can be called
5979 * with either INIT or INIT-ACK's as long as the m points to the IP
5980 * packet and the offset points to the beginning of the parameters.
5982 struct sctp_inpcb *inp;
5983 struct sctp_nets *net, *nnet, *net_tmp;
5984 struct sctp_paramhdr *phdr, parm_buf;
5985 struct sctp_tcb *stcb_tmp;
5986 uint16_t ptype, plen;
5987 struct sockaddr *sa;
5988 uint8_t random_store[SCTP_PARAM_BUFFER_SIZE];
5989 struct sctp_auth_random *p_random = NULL;
5990 uint16_t random_len = 0;
5991 uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE];
5992 struct sctp_auth_hmac_algo *hmacs = NULL;
5993 uint16_t hmacs_len = 0;
5994 uint8_t saw_asconf = 0;
5995 uint8_t saw_asconf_ack = 0;
5996 uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE];
5997 struct sctp_auth_chunk_list *chunks = NULL;
5998 uint16_t num_chunks = 0;
5999 sctp_key_t *new_key;
6001 int got_random = 0, got_hmacs = 0, got_chklist = 0;
6002 uint8_t ecn_allowed;
6005 struct sockaddr_in sin;
6009 struct sockaddr_in6 sin6;
6013 /* First get the destination address setup too. */
6015 memset(&sin, 0, sizeof(sin));
6016 sin.sin_family = AF_INET;
6017 sin.sin_len = sizeof(sin);
6018 sin.sin_port = stcb->rport;
6021 memset(&sin6, 0, sizeof(sin6));
6022 sin6.sin6_family = AF_INET6;
6023 sin6.sin6_len = sizeof(struct sockaddr_in6);
6024 sin6.sin6_port = stcb->rport;
6031 /* Turn off ECN until we get through all params */
6033 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
6034 /* mark all addresses that we have currently on the list */
6035 net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC;
6037 /* does the source address already exist? if so skip it */
6038 inp = stcb->sctp_ep;
6039 atomic_add_int(&stcb->asoc.refcnt, 1);
6040 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, dst, stcb);
6041 atomic_add_int(&stcb->asoc.refcnt, -1);
6043 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) {
6044 /* we must add the source address */
6045 /* no scope set here since we have a tcb already. */
6046 switch (sa->sa_family) {
6049 if (stcb->asoc.ipv4_addr_legal) {
6050 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) {
6058 if (stcb->asoc.ipv6_addr_legal) {
6059 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
6069 if (net_tmp != NULL && stcb_tmp == stcb) {
6070 net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC;
6071 } else if (stcb_tmp != stcb) {
6072 /* It belongs to another association? */
6074 SCTP_TCB_UNLOCK(stcb_tmp);
6078 if (stcb->asoc.state == 0) {
6079 /* the assoc was freed? */
6083 * peer must explicitly turn this on. This may have been initialized
6084 * to be "on" in order to allow local addr changes while INIT's are
6087 stcb->asoc.peer_supports_asconf = 0;
6088 /* now we must go through each of the params. */
6089 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
6091 ptype = ntohs(phdr->param_type);
6092 plen = ntohs(phdr->param_length);
6094 * SCTP_PRINTF("ptype => %0x, plen => %d\n",
6095 * (uint32_t)ptype, (int)plen);
6097 if (offset + plen > limit) {
6104 if (ptype == SCTP_IPV4_ADDRESS) {
6105 if (stcb->asoc.ipv4_addr_legal) {
6106 struct sctp_ipv4addr_param *p4, p4_buf;
6108 /* ok get the v4 address and check/add */
6109 phdr = sctp_get_next_param(m, offset,
6110 (struct sctp_paramhdr *)&p4_buf,
6112 if (plen != sizeof(struct sctp_ipv4addr_param) ||
6116 p4 = (struct sctp_ipv4addr_param *)phdr;
6117 sin.sin_addr.s_addr = p4->addr;
6118 if (IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) {
6119 /* Skip multi-cast addresses */
6122 if ((sin.sin_addr.s_addr == INADDR_BROADCAST) ||
6123 (sin.sin_addr.s_addr == INADDR_ANY)) {
6126 sa = (struct sockaddr *)&sin;
6127 inp = stcb->sctp_ep;
6128 atomic_add_int(&stcb->asoc.refcnt, 1);
6129 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6131 atomic_add_int(&stcb->asoc.refcnt, -1);
6133 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) ||
6135 /* we must add the source address */
6137 * no scope set since we have a tcb
6142 * we must validate the state again
6146 if (stcb->asoc.state == 0) {
6147 /* the assoc was freed? */
6150 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) {
6153 } else if (stcb_tmp == stcb) {
6154 if (stcb->asoc.state == 0) {
6155 /* the assoc was freed? */
6161 ~SCTP_ADDR_NOT_IN_ASSOC;
6165 * strange, address is in another
6166 * assoc? straighten out locks.
6169 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6174 sctp_abort_an_association(stcb_tmp->sctp_ep,
6175 stcb_tmp, NULL, SCTP_SO_NOT_LOCKED);
6178 SCTP_TCB_UNLOCK(stcb_tmp);
6180 if (stcb->asoc.state == 0) {
6181 /* the assoc was freed? */
6190 if (ptype == SCTP_IPV6_ADDRESS) {
6191 if (stcb->asoc.ipv6_addr_legal) {
6192 /* ok get the v6 address and check/add */
6193 struct sctp_ipv6addr_param *p6, p6_buf;
6195 phdr = sctp_get_next_param(m, offset,
6196 (struct sctp_paramhdr *)&p6_buf,
6198 if (plen != sizeof(struct sctp_ipv6addr_param) ||
6202 p6 = (struct sctp_ipv6addr_param *)phdr;
6203 memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
6205 if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) {
6206 /* Skip multi-cast addresses */
6209 if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) {
6211 * Link local make no sense without
6216 sa = (struct sockaddr *)&sin6;
6217 inp = stcb->sctp_ep;
6218 atomic_add_int(&stcb->asoc.refcnt, 1);
6219 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6221 atomic_add_int(&stcb->asoc.refcnt, -1);
6222 if (stcb_tmp == NULL &&
6223 (inp == stcb->sctp_ep || inp == NULL)) {
6225 * we must validate the state again
6229 if (stcb->asoc.state == 0) {
6230 /* the assoc was freed? */
6234 * we must add the address, no scope
6237 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) {
6240 } else if (stcb_tmp == stcb) {
6242 * we must validate the state again
6245 if (stcb->asoc.state == 0) {
6246 /* the assoc was freed? */
6252 ~SCTP_ADDR_NOT_IN_ASSOC;
6256 * strange, address is in another
6257 * assoc? straighten out locks.
6260 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6265 sctp_abort_an_association(stcb_tmp->sctp_ep,
6266 stcb_tmp, NULL, SCTP_SO_NOT_LOCKED);
6269 SCTP_TCB_UNLOCK(stcb_tmp);
6271 if (stcb->asoc.state == 0) {
6272 /* the assoc was freed? */
6280 if (ptype == SCTP_ECN_CAPABLE) {
6282 } else if (ptype == SCTP_ULP_ADAPTATION) {
6283 if (stcb->asoc.state != SCTP_STATE_OPEN) {
6284 struct sctp_adaptation_layer_indication ai,
6287 phdr = sctp_get_next_param(m, offset,
6288 (struct sctp_paramhdr *)&ai, sizeof(ai));
6289 aip = (struct sctp_adaptation_layer_indication *)phdr;
6291 stcb->asoc.peers_adaptation = ntohl(aip->indication);
6292 stcb->asoc.adaptation_needed = 1;
6295 } else if (ptype == SCTP_SET_PRIM_ADDR) {
6296 struct sctp_asconf_addr_param lstore, *fee;
6298 struct sockaddr *lsa = NULL;
6301 struct sctp_asconf_addrv4_param *fii;
6305 stcb->asoc.peer_supports_asconf = 1;
6306 if (plen > sizeof(lstore)) {
6309 phdr = sctp_get_next_param(m, offset,
6310 (struct sctp_paramhdr *)&lstore,
6311 min(plen, sizeof(lstore)));
6315 fee = (struct sctp_asconf_addr_param *)phdr;
6316 lptype = ntohs(fee->addrp.ph.param_type);
6319 case SCTP_IPV4_ADDRESS:
6321 sizeof(struct sctp_asconf_addrv4_param)) {
6322 SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n",
6323 (int)sizeof(struct sctp_asconf_addrv4_param),
6326 fii = (struct sctp_asconf_addrv4_param *)fee;
6327 sin.sin_addr.s_addr = fii->addrp.addr;
6328 lsa = (struct sockaddr *)&sin;
6333 case SCTP_IPV6_ADDRESS:
6335 sizeof(struct sctp_asconf_addr_param)) {
6336 SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n",
6337 (int)sizeof(struct sctp_asconf_addr_param),
6340 memcpy(sin6.sin6_addr.s6_addr,
6342 sizeof(fee->addrp.addr));
6343 lsa = (struct sockaddr *)&sin6;
6351 (void)sctp_set_primary_addr(stcb, sa, NULL);
6353 } else if (ptype == SCTP_HAS_NAT_SUPPORT) {
6354 stcb->asoc.peer_supports_nat = 1;
6355 } else if (ptype == SCTP_PRSCTP_SUPPORTED) {
6356 /* Peer supports pr-sctp */
6357 stcb->asoc.peer_supports_prsctp = 1;
6358 } else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) {
6359 /* A supported extension chunk */
6360 struct sctp_supported_chunk_types_param *pr_supported;
6361 uint8_t local_store[SCTP_PARAM_BUFFER_SIZE];
6364 phdr = sctp_get_next_param(m, offset,
6365 (struct sctp_paramhdr *)&local_store, min(sizeof(local_store), plen));
6369 stcb->asoc.peer_supports_asconf = 0;
6370 stcb->asoc.peer_supports_prsctp = 0;
6371 stcb->asoc.peer_supports_pktdrop = 0;
6372 stcb->asoc.peer_supports_strreset = 0;
6373 stcb->asoc.peer_supports_nr_sack = 0;
6374 stcb->asoc.peer_supports_auth = 0;
6375 pr_supported = (struct sctp_supported_chunk_types_param *)phdr;
6376 num_ent = plen - sizeof(struct sctp_paramhdr);
6377 for (i = 0; i < num_ent; i++) {
6378 switch (pr_supported->chunk_types[i]) {
6380 case SCTP_ASCONF_ACK:
6381 stcb->asoc.peer_supports_asconf = 1;
6383 case SCTP_FORWARD_CUM_TSN:
6384 stcb->asoc.peer_supports_prsctp = 1;
6386 case SCTP_PACKET_DROPPED:
6387 stcb->asoc.peer_supports_pktdrop = 1;
6389 case SCTP_NR_SELECTIVE_ACK:
6390 stcb->asoc.peer_supports_nr_sack = 1;
6392 case SCTP_STREAM_RESET:
6393 stcb->asoc.peer_supports_strreset = 1;
6395 case SCTP_AUTHENTICATION:
6396 stcb->asoc.peer_supports_auth = 1;
6399 /* one I have not learned yet */
6404 } else if (ptype == SCTP_RANDOM) {
6405 if (plen > sizeof(random_store))
6408 /* already processed a RANDOM */
6411 phdr = sctp_get_next_param(m, offset,
6412 (struct sctp_paramhdr *)random_store,
6413 min(sizeof(random_store), plen));
6416 p_random = (struct sctp_auth_random *)phdr;
6417 random_len = plen - sizeof(*p_random);
6418 /* enforce the random length */
6419 if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) {
6420 SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n");
6424 } else if (ptype == SCTP_HMAC_LIST) {
6428 if (plen > sizeof(hmacs_store))
6431 /* already processed a HMAC list */
6434 phdr = sctp_get_next_param(m, offset,
6435 (struct sctp_paramhdr *)hmacs_store,
6436 min(plen, sizeof(hmacs_store)));
6439 hmacs = (struct sctp_auth_hmac_algo *)phdr;
6440 hmacs_len = plen - sizeof(*hmacs);
6441 num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]);
6442 /* validate the hmac list */
6443 if (sctp_verify_hmac_param(hmacs, num_hmacs)) {
6446 if (stcb->asoc.peer_hmacs != NULL)
6447 sctp_free_hmaclist(stcb->asoc.peer_hmacs);
6448 stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs);
6449 if (stcb->asoc.peer_hmacs != NULL) {
6450 for (i = 0; i < num_hmacs; i++) {
6451 (void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs,
6452 ntohs(hmacs->hmac_ids[i]));
6456 } else if (ptype == SCTP_CHUNK_LIST) {
6459 if (plen > sizeof(chunks_store))
6462 /* already processed a Chunks list */
6465 phdr = sctp_get_next_param(m, offset,
6466 (struct sctp_paramhdr *)chunks_store,
6467 min(plen, sizeof(chunks_store)));
6470 chunks = (struct sctp_auth_chunk_list *)phdr;
6471 num_chunks = plen - sizeof(*chunks);
6472 if (stcb->asoc.peer_auth_chunks != NULL)
6473 sctp_clear_chunklist(stcb->asoc.peer_auth_chunks);
6475 stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist();
6476 for (i = 0; i < num_chunks; i++) {
6477 (void)sctp_auth_add_chunk(chunks->chunk_types[i],
6478 stcb->asoc.peer_auth_chunks);
6479 /* record asconf/asconf-ack if listed */
6480 if (chunks->chunk_types[i] == SCTP_ASCONF)
6482 if (chunks->chunk_types[i] == SCTP_ASCONF_ACK)
6487 } else if ((ptype == SCTP_HEARTBEAT_INFO) ||
6488 (ptype == SCTP_STATE_COOKIE) ||
6489 (ptype == SCTP_UNRECOG_PARAM) ||
6490 (ptype == SCTP_COOKIE_PRESERVE) ||
6491 (ptype == SCTP_SUPPORTED_ADDRTYPE) ||
6492 (ptype == SCTP_ADD_IP_ADDRESS) ||
6493 (ptype == SCTP_DEL_IP_ADDRESS) ||
6494 (ptype == SCTP_ERROR_CAUSE_IND) ||
6495 (ptype == SCTP_SUCCESS_REPORT)) {
6498 if ((ptype & 0x8000) == 0x0000) {
6500 * must stop processing the rest of the
6501 * param's. Any report bits were handled
6503 * sctp_arethere_unrecognized_parameters()
6504 * when the INIT or INIT-ACK was first seen.
6511 offset += SCTP_SIZE32(plen);
6512 if (offset >= limit) {
6515 phdr = sctp_get_next_param(m, offset, &parm_buf,
6518 /* Now check to see if we need to purge any addresses */
6519 TAILQ_FOREACH_SAFE(net, &stcb->asoc.nets, sctp_next, nnet) {
6520 if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) ==
6521 SCTP_ADDR_NOT_IN_ASSOC) {
6522 /* This address has been removed from the asoc */
6523 /* remove and free it */
6524 stcb->asoc.numnets--;
6525 TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next);
6526 sctp_free_remote_addr(net);
6527 if (net == stcb->asoc.primary_destination) {
6528 stcb->asoc.primary_destination = NULL;
6529 sctp_select_primary_destination(stcb);
6533 if (ecn_allowed == 0) {
6534 stcb->asoc.ecn_allowed = 0;
6536 /* validate authentication required parameters */
6537 if (got_random && got_hmacs) {
6538 stcb->asoc.peer_supports_auth = 1;
6540 stcb->asoc.peer_supports_auth = 0;
6542 if (!stcb->asoc.peer_supports_auth && got_chklist) {
6543 /* peer does not support auth but sent a chunks list? */
6546 if (!SCTP_BASE_SYSCTL(sctp_asconf_auth_nochk) && stcb->asoc.peer_supports_asconf &&
6547 !stcb->asoc.peer_supports_auth) {
6548 /* peer supports asconf but not auth? */
6550 } else if ((stcb->asoc.peer_supports_asconf) && (stcb->asoc.peer_supports_auth) &&
6551 ((saw_asconf == 0) || (saw_asconf_ack == 0))) {
6554 /* concatenate the full random key */
6555 keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len;
6556 if (chunks != NULL) {
6557 keylen += sizeof(*chunks) + num_chunks;
6559 new_key = sctp_alloc_key(keylen);
6560 if (new_key != NULL) {
6561 /* copy in the RANDOM */
6562 if (p_random != NULL) {
6563 keylen = sizeof(*p_random) + random_len;
6564 bcopy(p_random, new_key->key, keylen);
6566 /* append in the AUTH chunks */
6567 if (chunks != NULL) {
6568 bcopy(chunks, new_key->key + keylen,
6569 sizeof(*chunks) + num_chunks);
6570 keylen += sizeof(*chunks) + num_chunks;
6572 /* append in the HMACs */
6573 if (hmacs != NULL) {
6574 bcopy(hmacs, new_key->key + keylen,
6575 sizeof(*hmacs) + hmacs_len);
6578 /* failed to get memory for the key */
6581 if (stcb->asoc.authinfo.peer_random != NULL)
6582 sctp_free_key(stcb->asoc.authinfo.peer_random);
6583 stcb->asoc.authinfo.peer_random = new_key;
6584 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid);
6585 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid);
6591 sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa,
6592 struct sctp_nets *net)
6594 /* make sure the requested primary address exists in the assoc */
6595 if (net == NULL && sa)
6596 net = sctp_findnet(stcb, sa);
6599 /* didn't find the requested primary address! */
6602 /* set the primary address */
6603 if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
6604 /* Must be confirmed, so queue to set */
6605 net->dest_state |= SCTP_ADDR_REQ_PRIMARY;
6608 stcb->asoc.primary_destination = net;
6609 if (!(net->dest_state & SCTP_ADDR_PF) && (stcb->asoc.alternate)) {
6610 sctp_free_remote_addr(stcb->asoc.alternate);
6611 stcb->asoc.alternate = NULL;
6613 net = TAILQ_FIRST(&stcb->asoc.nets);
6614 if (net != stcb->asoc.primary_destination) {
6616 * first one on the list is NOT the primary
6617 * sctp_cmpaddr() is much more efficient if the
6618 * primary is the first on the list, make it so.
6620 TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6621 TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6628 sctp_is_vtag_good(uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now)
6631 * This function serves two purposes. It will see if a TAG can be
6632 * re-used and return 1 for yes it is ok and 0 for don't use that
6633 * tag. A secondary function it will do is purge out old tags that
6636 struct sctpvtaghead *chain;
6637 struct sctp_tagblock *twait_block;
6638 struct sctpasochead *head;
6639 struct sctp_tcb *stcb;
6642 SCTP_INP_INFO_RLOCK();
6643 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag,
6644 SCTP_BASE_INFO(hashasocmark))];
6647 goto skip_vtag_check;
6649 LIST_FOREACH(stcb, head, sctp_asocs) {
6651 * We choose not to lock anything here. TCB's can't be
6652 * removed since we have the read lock, so they can't be
6653 * freed on us, same thing for the INP. I may be wrong with
6654 * this assumption, but we will go with it for now :-)
6656 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
6659 if (stcb->asoc.my_vtag == tag) {
6661 if (stcb->rport != rport) {
6664 if (stcb->sctp_ep->sctp_lport != lport) {
6667 /* Its a used tag set */
6668 SCTP_INP_INFO_RUNLOCK();
6674 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
6675 /* Now what about timed wait ? */
6676 if (!LIST_EMPTY(chain)) {
6678 * Block(s) are present, lets see if we have this tag in the
6681 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6682 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
6683 if (twait_block->vtag_block[i].v_tag == 0) {
6686 } else if ((long)twait_block->vtag_block[i].tv_sec_at_expire <
6688 /* Audit expires this guy */
6689 twait_block->vtag_block[i].tv_sec_at_expire = 0;
6690 twait_block->vtag_block[i].v_tag = 0;
6691 twait_block->vtag_block[i].lport = 0;
6692 twait_block->vtag_block[i].rport = 0;
6693 } else if ((twait_block->vtag_block[i].v_tag == tag) &&
6694 (twait_block->vtag_block[i].lport == lport) &&
6695 (twait_block->vtag_block[i].rport == rport)) {
6696 /* Bad tag, sorry :< */
6697 SCTP_INP_INFO_RUNLOCK();
6703 SCTP_INP_INFO_RUNLOCK();
6708 sctp_drain_mbufs(struct sctp_tcb *stcb)
6711 * We must hunt this association for MBUF's past the cumack (i.e.
6712 * out of order data that we can renege on).
6714 struct sctp_association *asoc;
6715 struct sctp_tmit_chunk *chk, *nchk;
6716 uint32_t cumulative_tsn_p1;
6717 struct sctp_queued_to_read *ctl, *nctl;
6722 /* We look for anything larger than the cum-ack + 1 */
6725 if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) {
6726 /* none we can reneg on. */
6729 SCTP_STAT_INCR(sctps_protocol_drains_done);
6730 cumulative_tsn_p1 = asoc->cumulative_tsn + 1;
6732 /* First look in the re-assembly queue */
6733 TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) {
6734 if (SCTP_TSN_GT(chk->rec.data.TSN_seq, cumulative_tsn_p1)) {
6735 /* Yep it is above cum-ack */
6737 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.TSN_seq, asoc->mapping_array_base_tsn);
6738 asoc->size_on_reasm_queue = sctp_sbspace_sub(asoc->size_on_reasm_queue, chk->send_size);
6739 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6740 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6741 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
6743 sctp_m_freem(chk->data);
6746 sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
6749 /* Ok that was fun, now we will drain all the inbound streams? */
6750 for (strmat = 0; strmat < asoc->streamincnt; strmat++) {
6751 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[strmat].inqueue, next, nctl) {
6752 if (SCTP_TSN_GT(ctl->sinfo_tsn, cumulative_tsn_p1)) {
6753 /* Yep it is above cum-ack */
6755 SCTP_CALC_TSN_TO_GAP(gap, ctl->sinfo_tsn, asoc->mapping_array_base_tsn);
6756 asoc->size_on_all_streams = sctp_sbspace_sub(asoc->size_on_all_streams, ctl->length);
6757 sctp_ucount_decr(asoc->cnt_on_all_streams);
6758 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6759 TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, ctl, next);
6761 sctp_m_freem(ctl->data);
6764 sctp_free_remote_addr(ctl->whoFrom);
6765 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
6766 SCTP_DECR_READQ_COUNT();
6771 /* We must back down to see what the new highest is */
6772 for (i = asoc->highest_tsn_inside_map; SCTP_TSN_GE(i, asoc->mapping_array_base_tsn); i--) {
6773 SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn);
6774 if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) {
6775 asoc->highest_tsn_inside_map = i;
6781 asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1;
6784 * Question, should we go through the delivery queue? The
6785 * only reason things are on here is the app not reading OR
6786 * a p-d-api up. An attacker COULD send enough in to
6787 * initiate the PD-API and then send a bunch of stuff to
6788 * other streams... these would wind up on the delivery
6789 * queue.. and then we would not get to them. But in order
6790 * to do this I then have to back-track and un-deliver
6791 * sequence numbers in streams.. el-yucko. I think for now
6792 * we will NOT look at the delivery queue and leave it to be
6793 * something to consider later. An alternative would be to
6794 * abort the P-D-API with a notification and then deliver
6795 * the data.... Or another method might be to keep track of
6796 * how many times the situation occurs and if we see a
6797 * possible attack underway just abort the association.
6800 SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt);
6803 * Now do we need to find a new
6804 * asoc->highest_tsn_inside_map?
6806 asoc->last_revoke_count = cnt;
6807 (void)SCTP_OS_TIMER_STOP(&stcb->asoc.dack_timer.timer);
6808 /* sa_ignore NO_NULL_CHK */
6809 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
6810 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED);
6813 * Another issue, in un-setting the TSN's in the mapping array we
6814 * DID NOT adjust the highest_tsn marker. This will cause one of
6815 * two things to occur. It may cause us to do extra work in checking
6816 * for our mapping array movement. More importantly it may cause us
6817 * to SACK every datagram. This may not be a bad thing though since
6818 * we will recover once we get our cum-ack above and all this stuff
6819 * we dumped recovered.
6827 * We must walk the PCB lists for ALL associations here. The system
6828 * is LOW on MBUF's and needs help. This is where reneging will
6829 * occur. We really hope this does NOT happen!
6831 VNET_ITERATOR_DECL(vnet_iter);
6832 VNET_LIST_RLOCK_NOSLEEP();
6833 VNET_FOREACH(vnet_iter) {
6834 CURVNET_SET(vnet_iter);
6835 struct sctp_inpcb *inp;
6836 struct sctp_tcb *stcb;
6838 SCTP_STAT_INCR(sctps_protocol_drain_calls);
6839 if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
6846 SCTP_INP_INFO_RLOCK();
6847 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
6848 /* For each endpoint */
6849 SCTP_INP_RLOCK(inp);
6850 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
6851 /* For each association */
6852 SCTP_TCB_LOCK(stcb);
6853 sctp_drain_mbufs(stcb);
6854 SCTP_TCB_UNLOCK(stcb);
6856 SCTP_INP_RUNLOCK(inp);
6858 SCTP_INP_INFO_RUNLOCK();
6861 VNET_LIST_RUNLOCK_NOSLEEP();
6865 * start a new iterator
6866 * iterates through all endpoints and associations based on the pcb_state
6867 * flags and asoc_state. "af" (mandatory) is executed for all matching
6868 * assocs and "ef" (optional) is executed when the iterator completes.
6869 * "inpf" (optional) is executed for each new endpoint as it is being
6870 * iterated through. inpe (optional) is called when the inp completes
6871 * its way through all the stcbs.
6874 sctp_initiate_iterator(inp_func inpf,
6878 uint32_t pcb_features,
6879 uint32_t asoc_state,
6883 struct sctp_inpcb *s_inp,
6884 uint8_t chunk_output_off)
6886 struct sctp_iterator *it = NULL;
6891 SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator),
6894 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
6897 memset(it, 0, sizeof(*it));
6898 it->function_assoc = af;
6899 it->function_inp = inpf;
6901 it->done_current_ep = 0;
6903 it->done_current_ep = 1;
6904 it->function_atend = ef;
6907 it->pcb_flags = pcb_state;
6908 it->pcb_features = pcb_features;
6909 it->asoc_state = asoc_state;
6910 it->function_inp_end = inpe;
6911 it->no_chunk_output = chunk_output_off;
6914 /* Assume lock is held here */
6916 SCTP_INP_INCR_REF(it->inp);
6917 it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP;
6919 SCTP_INP_INFO_RLOCK();
6920 it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead));
6922 SCTP_INP_INCR_REF(it->inp);
6924 SCTP_INP_INFO_RUNLOCK();
6925 it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP;
6928 SCTP_IPI_ITERATOR_WQ_LOCK();
6930 TAILQ_INSERT_TAIL(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
6931 if (sctp_it_ctl.iterator_running == 0) {
6932 sctp_wakeup_iterator();
6934 SCTP_IPI_ITERATOR_WQ_UNLOCK();
6935 /* sa_ignore MEMLEAK {memory is put on the tailq for the iterator} */