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) ||
1230 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
1232 * Now either this guy is our listener or it's the
1233 * connector. If it is the one that issued the connect, then
1234 * it's only chance is to be the first TCB in the list. If
1235 * it is the acceptor, then do the special_lookup to hash
1236 * and find the real inp.
1238 if ((inp->sctp_socket) && (inp->sctp_socket->so_qlimit)) {
1239 /* to is peer addr, from is my addr */
1240 stcb = sctp_tcb_special_locate(inp_p, remote, local,
1241 netp, inp->def_vrf_id);
1242 if ((stcb != NULL) && (locked_tcb == NULL)) {
1243 /* we have a locked tcb, lower refcount */
1244 SCTP_INP_DECR_REF(inp);
1246 if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
1247 SCTP_INP_RLOCK(locked_tcb->sctp_ep);
1248 SCTP_TCB_LOCK(locked_tcb);
1249 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1250 SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
1252 SCTP_INP_INFO_RUNLOCK();
1255 SCTP_INP_WLOCK(inp);
1256 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1259 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1263 SCTP_TCB_LOCK(stcb);
1265 if (stcb->rport != rport) {
1266 /* remote port does not match. */
1267 SCTP_TCB_UNLOCK(stcb);
1270 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1271 SCTP_TCB_UNLOCK(stcb);
1274 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1275 SCTP_TCB_UNLOCK(stcb);
1278 /* now look at the list of remote addresses */
1279 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1281 if (net == (TAILQ_NEXT(net, sctp_next))) {
1282 panic("Corrupt net list");
1285 if (net->ro._l_addr.sa.sa_family !=
1286 remote->sa_family) {
1287 /* not the same family */
1290 switch (remote->sa_family) {
1294 struct sockaddr_in *sin,
1297 sin = (struct sockaddr_in *)
1299 rsin = (struct sockaddr_in *)remote;
1300 if (sin->sin_addr.s_addr ==
1301 rsin->sin_addr.s_addr) {
1306 if (locked_tcb == NULL) {
1307 SCTP_INP_DECR_REF(inp);
1308 } else if (locked_tcb != stcb) {
1309 SCTP_TCB_LOCK(locked_tcb);
1312 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1314 SCTP_INP_WUNLOCK(inp);
1315 SCTP_INP_INFO_RUNLOCK();
1324 struct sockaddr_in6 *sin6,
1327 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1328 rsin6 = (struct sockaddr_in6 *)remote;
1329 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1335 if (locked_tcb == NULL) {
1336 SCTP_INP_DECR_REF(inp);
1337 } else if (locked_tcb != stcb) {
1338 SCTP_TCB_LOCK(locked_tcb);
1341 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1343 SCTP_INP_WUNLOCK(inp);
1344 SCTP_INP_INFO_RUNLOCK();
1355 SCTP_TCB_UNLOCK(stcb);
1358 SCTP_INP_WLOCK(inp);
1359 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1362 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport,
1363 inp->sctp_hashmark)];
1367 LIST_FOREACH(stcb, head, sctp_tcbhash) {
1368 if (stcb->rport != rport) {
1369 /* remote port does not match */
1372 SCTP_TCB_LOCK(stcb);
1373 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1374 SCTP_TCB_UNLOCK(stcb);
1377 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1378 SCTP_TCB_UNLOCK(stcb);
1381 /* now look at the list of remote addresses */
1382 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1384 if (net == (TAILQ_NEXT(net, sctp_next))) {
1385 panic("Corrupt net list");
1388 if (net->ro._l_addr.sa.sa_family !=
1389 remote->sa_family) {
1390 /* not the same family */
1393 switch (remote->sa_family) {
1397 struct sockaddr_in *sin,
1400 sin = (struct sockaddr_in *)
1402 rsin = (struct sockaddr_in *)remote;
1403 if (sin->sin_addr.s_addr ==
1404 rsin->sin_addr.s_addr) {
1409 if (locked_tcb == NULL) {
1410 SCTP_INP_DECR_REF(inp);
1411 } else if (locked_tcb != stcb) {
1412 SCTP_TCB_LOCK(locked_tcb);
1415 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1417 SCTP_INP_WUNLOCK(inp);
1418 SCTP_INP_INFO_RUNLOCK();
1427 struct sockaddr_in6 *sin6,
1430 sin6 = (struct sockaddr_in6 *)
1432 rsin6 = (struct sockaddr_in6 *)remote;
1433 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1439 if (locked_tcb == NULL) {
1440 SCTP_INP_DECR_REF(inp);
1441 } else if (locked_tcb != stcb) {
1442 SCTP_TCB_LOCK(locked_tcb);
1445 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1447 SCTP_INP_WUNLOCK(inp);
1448 SCTP_INP_INFO_RUNLOCK();
1459 SCTP_TCB_UNLOCK(stcb);
1463 /* clean up for returning null */
1465 SCTP_TCB_LOCK(locked_tcb);
1466 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1468 SCTP_INP_WUNLOCK(inp);
1469 SCTP_INP_INFO_RUNLOCK();
1475 * Find an association for a specific endpoint using the association id given
1476 * out in the COMM_UP notification
1480 sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1483 * Use my the assoc_id to find a endpoint
1485 struct sctpasochead *head;
1486 struct sctp_tcb *stcb;
1490 SCTP_PRINTF("TSNH ep_associd\n");
1493 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1494 SCTP_PRINTF("TSNH ep_associd0\n");
1497 id = (uint32_t) asoc_id;
1498 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
1500 /* invalid id TSNH */
1501 SCTP_PRINTF("TSNH ep_associd1\n");
1504 LIST_FOREACH(stcb, head, sctp_tcbasocidhash) {
1505 if (stcb->asoc.assoc_id == id) {
1506 if (inp != stcb->sctp_ep) {
1508 * some other guy has the same id active (id
1511 SCTP_PRINTF("TSNH ep_associd2\n");
1514 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1518 SCTP_TCB_LOCK(stcb);
1528 sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1530 struct sctp_tcb *stcb;
1532 SCTP_INP_RLOCK(inp);
1533 stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
1534 SCTP_INP_RUNLOCK(inp);
1539 static struct sctp_inpcb *
1540 sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head,
1541 uint16_t lport, uint32_t vrf_id)
1543 struct sctp_inpcb *inp;
1544 struct sctp_laddr *laddr;
1547 struct sockaddr_in *sin;
1551 struct sockaddr_in6 *sin6;
1552 struct sockaddr_in6 *intf_addr6;
1559 * Endpoint probe expects that the INP_INFO is locked.
1567 switch (nam->sa_family) {
1570 sin = (struct sockaddr_in *)nam;
1575 sin6 = (struct sockaddr_in6 *)nam;
1579 /* unsupported family */
1586 LIST_FOREACH(inp, head, sctp_hash) {
1587 SCTP_INP_RLOCK(inp);
1588 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1589 SCTP_INP_RUNLOCK(inp);
1592 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) &&
1593 (inp->sctp_lport == lport)) {
1596 if ((nam->sa_family == AF_INET) &&
1597 (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1598 SCTP_IPV6_V6ONLY(inp)) {
1599 /* IPv4 on a IPv6 socket with ONLY IPv6 set */
1600 SCTP_INP_RUNLOCK(inp);
1605 /* A V6 address and the endpoint is NOT bound V6 */
1606 if (nam->sa_family == AF_INET6 &&
1607 (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
1608 SCTP_INP_RUNLOCK(inp);
1612 /* does a VRF id match? */
1614 if (inp->def_vrf_id == vrf_id)
1617 SCTP_INP_RUNLOCK(inp);
1622 SCTP_INP_RUNLOCK(inp);
1624 switch (nam->sa_family) {
1627 if (sin->sin_addr.s_addr == INADDR_ANY) {
1628 /* Can't hunt for one that has no address specified */
1635 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1636 /* Can't hunt for one that has no address specified */
1645 * ok, not bound to all so see if we can find a EP bound to this
1648 LIST_FOREACH(inp, head, sctp_hash) {
1649 SCTP_INP_RLOCK(inp);
1650 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1651 SCTP_INP_RUNLOCK(inp);
1654 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
1655 SCTP_INP_RUNLOCK(inp);
1659 * Ok this could be a likely candidate, look at all of its
1662 if (inp->sctp_lport != lport) {
1663 SCTP_INP_RUNLOCK(inp);
1666 /* does a VRF id match? */
1668 if (inp->def_vrf_id == vrf_id)
1672 SCTP_INP_RUNLOCK(inp);
1675 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1676 if (laddr->ifa == NULL) {
1677 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
1681 SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ",
1682 (void *)laddr->ifa);
1683 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1684 SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n");
1687 if (laddr->ifa->address.sa.sa_family == nam->sa_family) {
1688 /* possible, see if it matches */
1689 switch (nam->sa_family) {
1692 if (sin->sin_addr.s_addr ==
1693 laddr->ifa->address.sin.sin_addr.s_addr) {
1694 SCTP_INP_RUNLOCK(inp);
1701 intf_addr6 = &laddr->ifa->address.sin6;
1702 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1704 SCTP_INP_RUNLOCK(inp);
1712 SCTP_INP_RUNLOCK(inp);
1718 static struct sctp_inpcb *
1719 sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
1721 struct sctppcbhead *head;
1722 struct sctp_inpcb *t_inp;
1725 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1726 SCTP_BASE_INFO(hashmark))];
1727 LIST_FOREACH(t_inp, head, sctp_hash) {
1728 if (t_inp->sctp_lport != lport) {
1731 /* is it in the VRF in question */
1733 if (t_inp->def_vrf_id == vrf_id)
1738 /* This one is in use. */
1739 /* check the v6/v4 binding issue */
1740 if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1741 SCTP_IPV6_V6ONLY(t_inp)) {
1742 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1743 /* collision in V6 space */
1746 /* inp is BOUND_V4 no conflict */
1749 } else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1750 /* t_inp is bound v4 and v6, conflict always */
1753 /* t_inp is bound only V4 */
1754 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1755 SCTP_IPV6_V6ONLY(inp)) {
1759 /* else fall through to conflict */
1768 sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
1770 /* For 1-2-1 with port reuse */
1771 struct sctppcbhead *head;
1772 struct sctp_inpcb *tinp;
1774 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
1775 /* only works with port reuse on */
1778 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) {
1781 SCTP_INP_RUNLOCK(inp);
1782 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport,
1783 SCTP_BASE_INFO(hashmark))];
1784 /* Kick out all non-listeners to the TCP hash */
1785 LIST_FOREACH(tinp, head, sctp_hash) {
1786 if (tinp->sctp_lport != inp->sctp_lport) {
1789 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1792 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
1795 if (tinp->sctp_socket->so_qlimit) {
1798 SCTP_INP_WLOCK(tinp);
1799 LIST_REMOVE(tinp, sctp_hash);
1800 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))];
1801 tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
1802 LIST_INSERT_HEAD(head, tinp, sctp_hash);
1803 SCTP_INP_WUNLOCK(tinp);
1805 SCTP_INP_WLOCK(inp);
1806 /* Pull from where he was */
1807 LIST_REMOVE(inp, sctp_hash);
1808 inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL;
1809 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))];
1810 LIST_INSERT_HEAD(head, inp, sctp_hash);
1811 SCTP_INP_WUNLOCK(inp);
1812 SCTP_INP_RLOCK(inp);
1818 sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock,
1822 * First we check the hash table to see if someone has this port
1823 * bound with just the port.
1825 struct sctp_inpcb *inp;
1826 struct sctppcbhead *head;
1831 struct sockaddr_in *sin;
1835 struct sockaddr_in6 *sin6;
1839 switch (nam->sa_family) {
1842 sin = (struct sockaddr_in *)nam;
1843 lport = sin->sin_port;
1848 sin6 = (struct sockaddr_in6 *)nam;
1849 lport = sin6->sin6_port;
1856 * I could cheat here and just cast to one of the types but we will
1857 * do it right. It also provides the check against an Unsupported
1860 /* Find the head of the ALLADDR chain */
1861 if (have_lock == 0) {
1862 SCTP_INP_INFO_RLOCK();
1864 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1865 SCTP_BASE_INFO(hashmark))];
1866 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1869 * If the TCP model exists it could be that the main listening
1870 * endpoint is gone but there still exists a connected socket for
1871 * this guy. If so we can return the first one that we find. This
1872 * may NOT be the correct one so the caller should be wary on the
1873 * returned INP. Currently the only caller that sets find_tcp_pool
1874 * is in bindx where we are verifying that a user CAN bind the
1875 * address. He either has bound it already, or someone else has, or
1876 * its open to bind, so this is good enough.
1878 if (inp == NULL && find_tcp_pool) {
1879 for (i = 0; i < SCTP_BASE_INFO(hashtcpmark) + 1; i++) {
1880 head = &SCTP_BASE_INFO(sctp_tcpephash)[i];
1881 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1888 SCTP_INP_INCR_REF(inp);
1890 if (have_lock == 0) {
1891 SCTP_INP_INFO_RUNLOCK();
1897 * Find an association for an endpoint with the pointer to whom you want to
1898 * send to and the endpoint pointer. The address can be IPv4 or IPv6. We may
1899 * need to change the *to to some other struct like a mbuf...
1902 sctp_findassociation_addr_sa(struct sockaddr *from, struct sockaddr *to,
1903 struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool,
1906 struct sctp_inpcb *inp = NULL;
1907 struct sctp_tcb *retval;
1909 SCTP_INP_INFO_RLOCK();
1910 if (find_tcp_pool) {
1911 if (inp_p != NULL) {
1912 retval = sctp_tcb_special_locate(inp_p, from, to, netp,
1915 retval = sctp_tcb_special_locate(&inp, from, to, netp,
1918 if (retval != NULL) {
1919 SCTP_INP_INFO_RUNLOCK();
1923 inp = sctp_pcb_findep(to, 0, 1, vrf_id);
1924 if (inp_p != NULL) {
1927 SCTP_INP_INFO_RUNLOCK();
1933 * ok, we have an endpoint, now lets find the assoc for it (if any)
1934 * we now place the source address or from in the to of the find
1935 * endpoint call. Since in reality this chain is used from the
1936 * inbound packet side.
1938 if (inp_p != NULL) {
1939 retval = sctp_findassociation_ep_addr(inp_p, from, netp, to,
1942 retval = sctp_findassociation_ep_addr(&inp, from, netp, to,
1950 * This routine will grub through the mbuf that is a INIT or INIT-ACK and
1951 * find all addresses that the sender has specified in any address list. Each
1952 * address will be used to lookup the TCB and see if one exits.
1954 static struct sctp_tcb *
1955 sctp_findassociation_special_addr(struct mbuf *m, int offset,
1956 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp,
1957 struct sockaddr *dst)
1959 struct sctp_paramhdr *phdr, parm_buf;
1960 struct sctp_tcb *retval;
1961 uint32_t ptype, plen;
1964 struct sockaddr_in sin4;
1968 struct sockaddr_in6 sin6;
1973 memset(&sin4, 0, sizeof(sin4));
1974 sin4.sin_len = sizeof(sin4);
1975 sin4.sin_family = AF_INET;
1976 sin4.sin_port = sh->src_port;
1979 memset(&sin6, 0, sizeof(sin6));
1980 sin6.sin6_len = sizeof(sin6);
1981 sin6.sin6_family = AF_INET6;
1982 sin6.sin6_port = sh->src_port;
1986 offset += sizeof(struct sctp_init_chunk);
1988 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
1989 while (phdr != NULL) {
1990 /* now we must see if we want the parameter */
1991 ptype = ntohs(phdr->param_type);
1992 plen = ntohs(phdr->param_length);
1997 if (ptype == SCTP_IPV4_ADDRESS &&
1998 plen == sizeof(struct sctp_ipv4addr_param)) {
1999 /* Get the rest of the address */
2000 struct sctp_ipv4addr_param ip4_parm, *p4;
2002 phdr = sctp_get_next_param(m, offset,
2003 (struct sctp_paramhdr *)&ip4_parm, min(plen, sizeof(ip4_parm)));
2007 p4 = (struct sctp_ipv4addr_param *)phdr;
2008 memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr));
2010 retval = sctp_findassociation_ep_addr(inp_p,
2011 (struct sockaddr *)&sin4, netp, dst, NULL);
2012 if (retval != NULL) {
2018 if (ptype == SCTP_IPV6_ADDRESS &&
2019 plen == sizeof(struct sctp_ipv6addr_param)) {
2020 /* Get the rest of the address */
2021 struct sctp_ipv6addr_param ip6_parm, *p6;
2023 phdr = sctp_get_next_param(m, offset,
2024 (struct sctp_paramhdr *)&ip6_parm, min(plen, sizeof(ip6_parm)));
2028 p6 = (struct sctp_ipv6addr_param *)phdr;
2029 memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr));
2031 retval = sctp_findassociation_ep_addr(inp_p,
2032 (struct sockaddr *)&sin6, netp, dst, NULL);
2033 if (retval != NULL) {
2038 offset += SCTP_SIZE32(plen);
2039 phdr = sctp_get_next_param(m, offset, &parm_buf,
2045 static struct sctp_tcb *
2046 sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag,
2047 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport,
2048 uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
2051 * Use my vtag to hash. If we find it we then verify the source addr
2052 * is in the assoc. If all goes well we save a bit on rec of a
2055 struct sctpasochead *head;
2056 struct sctp_nets *net;
2057 struct sctp_tcb *stcb;
2059 SCTP_INP_INFO_RLOCK();
2060 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag,
2061 SCTP_BASE_INFO(hashasocmark))];
2064 SCTP_INP_INFO_RUNLOCK();
2067 LIST_FOREACH(stcb, head, sctp_asocs) {
2068 SCTP_INP_RLOCK(stcb->sctp_ep);
2069 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
2070 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2073 if (stcb->sctp_ep->def_vrf_id != vrf_id) {
2074 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2077 SCTP_TCB_LOCK(stcb);
2078 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2079 if (stcb->asoc.my_vtag == vtag) {
2081 if (stcb->rport != rport) {
2082 SCTP_TCB_UNLOCK(stcb);
2085 if (stcb->sctp_ep->sctp_lport != lport) {
2086 SCTP_TCB_UNLOCK(stcb);
2089 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
2090 SCTP_TCB_UNLOCK(stcb);
2093 /* RRS:Need toaddr check here */
2094 if (sctp_does_stcb_own_this_addr(stcb, to) == 0) {
2095 /* Endpoint does not own this address */
2096 SCTP_TCB_UNLOCK(stcb);
2101 * If we have both vtags that's all we match
2104 if (stcb->asoc.peer_vtag == remote_tag) {
2106 * If both tags match we consider it
2107 * conclusive and check NO
2108 * source/destination addresses
2113 if (skip_src_check) {
2116 *netp = sctp_findnet(stcb, from);
2118 *netp = NULL; /* unknown */
2121 *inp_p = stcb->sctp_ep;
2122 SCTP_INP_INFO_RUNLOCK();
2125 net = sctp_findnet(stcb, from);
2129 SCTP_STAT_INCR(sctps_vtagexpress);
2130 *inp_p = stcb->sctp_ep;
2131 SCTP_INP_INFO_RUNLOCK();
2135 * not him, this should only happen in rare
2136 * cases so I peg it.
2138 SCTP_STAT_INCR(sctps_vtagbogus);
2141 SCTP_TCB_UNLOCK(stcb);
2143 SCTP_INP_INFO_RUNLOCK();
2148 * Find an association with the pointer to the inbound IP packet. This can be
2149 * a IPv4 or IPv6 packet.
2152 sctp_findassociation_addr(struct mbuf *m, int offset,
2153 struct sockaddr *src, struct sockaddr *dst,
2154 struct sctphdr *sh, struct sctp_chunkhdr *ch,
2155 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2158 struct sctp_tcb *retval;
2159 struct sctp_inpcb *inp;
2162 /* we only go down this path if vtag is non-zero */
2163 retval = sctp_findassoc_by_vtag(src, dst, ntohl(sh->v_tag),
2164 inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0);
2170 if ((ch->chunk_type != SCTP_INITIATION) &&
2171 (ch->chunk_type != SCTP_INITIATION_ACK) &&
2172 (ch->chunk_type != SCTP_COOKIE_ACK) &&
2173 (ch->chunk_type != SCTP_COOKIE_ECHO)) {
2174 /* Other chunk types go to the tcp pool. */
2178 retval = sctp_findassociation_addr_sa(src, dst, inp_p, netp,
2179 find_tcp_pool, vrf_id);
2182 retval = sctp_findassociation_addr_sa(src, dst, &inp, netp,
2183 find_tcp_pool, vrf_id);
2185 SCTPDBG(SCTP_DEBUG_PCB1, "retval:%p inp:%p\n", (void *)retval, (void *)inp);
2186 if (retval == NULL && inp) {
2187 /* Found a EP but not this address */
2188 if ((ch->chunk_type == SCTP_INITIATION) ||
2189 (ch->chunk_type == SCTP_INITIATION_ACK)) {
2191 * special hook, we do NOT return linp or an
2192 * association that is linked to an existing
2193 * association that is under the TCP pool (i.e. no
2194 * listener exists). The endpoint finding routine
2195 * will always find a listener before examining the
2198 if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
2204 retval = sctp_findassociation_special_addr(m,
2205 offset, sh, &inp, netp, dst);
2206 if (inp_p != NULL) {
2211 SCTPDBG(SCTP_DEBUG_PCB1, "retval is %p\n", (void *)retval);
2216 * lookup an association by an ASCONF lookup address.
2217 * if the lookup address is 0.0.0.0 or ::0, use the vtag to do the lookup
2220 sctp_findassociation_ep_asconf(struct mbuf *m, int offset,
2221 struct sockaddr *dst, struct sctphdr *sh,
2222 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2224 struct sctp_tcb *stcb;
2225 struct sockaddr_storage remote_store;
2226 struct sctp_paramhdr parm_buf, *phdr;
2228 int zero_address = 0;
2231 struct sockaddr_in *sin;
2235 struct sockaddr_in6 *sin6;
2239 memset(&remote_store, 0, sizeof(remote_store));
2240 phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk),
2241 &parm_buf, sizeof(struct sctp_paramhdr));
2243 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n",
2247 ptype = (int)((uint32_t) ntohs(phdr->param_type));
2248 /* get the correlation address */
2251 case SCTP_IPV6_ADDRESS:
2253 /* ipv6 address param */
2254 struct sctp_ipv6addr_param *p6, p6_buf;
2256 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) {
2259 p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m,
2260 offset + sizeof(struct sctp_asconf_chunk),
2261 &p6_buf.ph, sizeof(*p6));
2263 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n",
2267 sin6 = (struct sockaddr_in6 *)&remote_store;
2268 sin6->sin6_family = AF_INET6;
2269 sin6->sin6_len = sizeof(*sin6);
2270 sin6->sin6_port = sh->src_port;
2271 memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr));
2272 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
2278 case SCTP_IPV4_ADDRESS:
2280 /* ipv4 address param */
2281 struct sctp_ipv4addr_param *p4, p4_buf;
2283 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) {
2286 p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m,
2287 offset + sizeof(struct sctp_asconf_chunk),
2288 &p4_buf.ph, sizeof(*p4));
2290 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n",
2294 sin = (struct sockaddr_in *)&remote_store;
2295 sin->sin_family = AF_INET;
2296 sin->sin_len = sizeof(*sin);
2297 sin->sin_port = sh->src_port;
2298 memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr));
2299 if (sin->sin_addr.s_addr == INADDR_ANY)
2305 /* invalid address param type */
2310 stcb = sctp_findassoc_by_vtag(NULL, dst, ntohl(sh->v_tag), inp_p,
2311 netp, sh->src_port, sh->dest_port, 1, vrf_id, 0);
2313 SCTP_INP_DECR_REF(*inp_p);
2316 stcb = sctp_findassociation_ep_addr(inp_p,
2317 (struct sockaddr *)&remote_store, netp,
2325 * allocate a sctp_inpcb and setup a temporary binding to a port/all
2326 * addresses. This way if we don't get a bind we by default pick a ephemeral
2327 * port with all addresses bound.
2330 sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
2333 * we get called when a new endpoint starts up. We need to allocate
2334 * the sctp_inpcb structure from the zone and init it. Mark it as
2335 * unbound and find a port that we can use as an ephemeral with
2336 * INADDR_ANY. If the user binds later no problem we can then add in
2337 * the specific addresses. And setup the default parameters for the
2341 struct sctp_inpcb *inp;
2343 struct timeval time;
2344 sctp_sharedkey_t *null_key;
2348 SCTP_INP_INFO_WLOCK();
2349 inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb);
2351 SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n");
2352 SCTP_INP_INFO_WUNLOCK();
2353 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2357 bzero(inp, sizeof(*inp));
2359 /* bump generations */
2360 /* setup socket pointers */
2361 inp->sctp_socket = so;
2362 inp->ip_inp.inp.inp_socket = so;
2364 if (MODULE_GLOBAL(ip6_auto_flowlabel)) {
2365 inp->ip_inp.inp.inp_flags |= IN6P_AUTOFLOWLABEL;
2368 inp->sctp_associd_counter = 1;
2369 inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT;
2370 inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
2371 inp->sctp_cmt_on_off = SCTP_BASE_SYSCTL(sctp_cmt_on_off);
2372 inp->sctp_ecn_enable = SCTP_BASE_SYSCTL(sctp_ecn_enable);
2373 /* init the small hash table we use to track asocid <-> tcb */
2374 inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark);
2375 if (inp->sctp_asocidhash == NULL) {
2376 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2377 SCTP_INP_INFO_WUNLOCK();
2382 struct inpcbpolicy *pcb_sp = NULL;
2384 error = ipsec_init_policy(so, &pcb_sp);
2385 /* Arrange to share the policy */
2386 inp->ip_inp.inp.inp_sp = pcb_sp;
2387 ((struct in6pcb *)(&inp->ip_inp.inp))->in6p_sp = pcb_sp;
2390 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2391 SCTP_INP_INFO_WUNLOCK();
2395 SCTP_INCR_EP_COUNT();
2396 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
2397 SCTP_INP_INFO_WUNLOCK();
2399 so->so_pcb = (caddr_t)inp;
2401 if (SCTP_SO_TYPE(so) == SOCK_SEQPACKET) {
2402 /* UDP style socket */
2403 inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
2404 SCTP_PCB_FLAGS_UNBOUND);
2405 /* Be sure it is NON-BLOCKING IO for UDP */
2406 /* SCTP_SET_SO_NBIO(so); */
2407 } else if (SCTP_SO_TYPE(so) == SOCK_STREAM) {
2408 /* TCP style socket */
2409 inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
2410 SCTP_PCB_FLAGS_UNBOUND);
2411 /* Be sure we have blocking IO by default */
2412 SCTP_CLEAR_SO_NBIO(so);
2415 * unsupported socket type (RAW, etc)- in case we missed it
2418 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
2420 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2421 return (EOPNOTSUPP);
2423 if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) {
2424 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2425 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2426 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) {
2427 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2428 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2429 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) {
2430 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2431 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2433 inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize),
2434 &inp->sctp_hashmark);
2435 if (inp->sctp_tcbhash == NULL) {
2436 SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
2437 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2439 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2442 inp->def_vrf_id = vrf_id;
2444 SCTP_INP_INFO_WLOCK();
2445 SCTP_INP_LOCK_INIT(inp);
2446 INP_LOCK_INIT(&inp->ip_inp.inp, "inp", "sctpinp");
2447 SCTP_INP_READ_INIT(inp);
2448 SCTP_ASOC_CREATE_LOCK_INIT(inp);
2449 /* lock the new ep */
2450 SCTP_INP_WLOCK(inp);
2452 /* add it to the info area */
2453 LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list);
2454 SCTP_INP_INFO_WUNLOCK();
2456 TAILQ_INIT(&inp->read_queue);
2457 LIST_INIT(&inp->sctp_addr_list);
2459 LIST_INIT(&inp->sctp_asoc_list);
2461 #ifdef SCTP_TRACK_FREED_ASOCS
2463 LIST_INIT(&inp->sctp_asoc_free_list);
2465 /* Init the timer structure for signature change */
2466 SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer);
2467 inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE;
2469 /* now init the actual endpoint default data */
2472 /* setup the base timeout information */
2473 m->sctp_timeoutticks[SCTP_TIMER_SEND] = SEC_TO_TICKS(SCTP_SEND_SEC); /* needed ? */
2474 m->sctp_timeoutticks[SCTP_TIMER_INIT] = SEC_TO_TICKS(SCTP_INIT_SEC); /* needed ? */
2475 m->sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default));
2476 m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default));
2477 m->sctp_timeoutticks[SCTP_TIMER_PMTU] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default));
2478 m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default));
2479 m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default));
2480 /* all max/min max are in ms */
2481 m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default);
2482 m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default);
2483 m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default);
2484 m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default);
2485 m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default);
2487 m->max_open_streams_intome = MAX_SCTP_STREAMS;
2489 m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default);
2490 m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default);
2491 m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default);
2492 m->def_net_pf_threshold = SCTP_BASE_SYSCTL(sctp_path_pf_threshold);
2493 m->sctp_sws_sender = SCTP_SWS_SENDER_DEF;
2494 m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF;
2495 m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default);
2496 m->fr_max_burst = SCTP_BASE_SYSCTL(sctp_fr_max_burst_default);
2498 m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module);
2499 m->sctp_default_ss_module = SCTP_BASE_SYSCTL(sctp_default_ss_module);
2500 /* number of streams to pre-open on a association */
2501 m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default);
2503 /* Add adaptation cookie */
2504 m->adaptation_layer_indicator = 0x504C5253;
2506 /* seed random number generator */
2507 m->random_counter = 1;
2508 m->store_at = SCTP_SIGNATURE_SIZE;
2509 SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers));
2510 sctp_fill_random_store(m);
2512 /* Minimum cookie size */
2513 m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) +
2514 sizeof(struct sctp_state_cookie);
2515 m->size_of_a_cookie += SCTP_SIGNATURE_SIZE;
2517 /* Setup the initial secret */
2518 (void)SCTP_GETTIME_TIMEVAL(&time);
2519 m->time_of_secret_change = time.tv_sec;
2521 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
2522 m->secret_key[0][i] = sctp_select_initial_TSN(m);
2524 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
2526 /* How long is a cookie good for ? */
2527 m->def_cookie_life = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default));
2529 * Initialize authentication parameters
2531 m->local_hmacs = sctp_default_supported_hmaclist();
2532 m->local_auth_chunks = sctp_alloc_chunklist();
2533 m->default_dscp = 0;
2535 m->default_flowlabel = 0;
2537 m->port = 0; /* encapsulation disabled by default */
2538 sctp_auth_set_default_chunks(m->local_auth_chunks);
2539 LIST_INIT(&m->shared_keys);
2540 /* add default NULL key as key id 0 */
2541 null_key = sctp_alloc_sharedkey();
2542 sctp_insert_sharedkey(&m->shared_keys, null_key);
2543 SCTP_INP_WUNLOCK(inp);
2544 #ifdef SCTP_LOG_CLOSING
2545 sctp_log_closing(inp, NULL, 12);
2552 sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp,
2553 struct sctp_tcb *stcb)
2555 struct sctp_nets *net;
2556 uint16_t lport, rport;
2557 struct sctppcbhead *head;
2558 struct sctp_laddr *laddr, *oladdr;
2560 atomic_add_int(&stcb->asoc.refcnt, 1);
2561 SCTP_TCB_UNLOCK(stcb);
2562 SCTP_INP_INFO_WLOCK();
2563 SCTP_INP_WLOCK(old_inp);
2564 SCTP_INP_WLOCK(new_inp);
2565 SCTP_TCB_LOCK(stcb);
2566 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2568 new_inp->sctp_ep.time_of_secret_change =
2569 old_inp->sctp_ep.time_of_secret_change;
2570 memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key,
2571 sizeof(old_inp->sctp_ep.secret_key));
2572 new_inp->sctp_ep.current_secret_number =
2573 old_inp->sctp_ep.current_secret_number;
2574 new_inp->sctp_ep.last_secret_number =
2575 old_inp->sctp_ep.last_secret_number;
2576 new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie;
2578 /* make it so new data pours into the new socket */
2579 stcb->sctp_socket = new_inp->sctp_socket;
2580 stcb->sctp_ep = new_inp;
2582 /* Copy the port across */
2583 lport = new_inp->sctp_lport = old_inp->sctp_lport;
2584 rport = stcb->rport;
2585 /* Pull the tcb from the old association */
2586 LIST_REMOVE(stcb, sctp_tcbhash);
2587 LIST_REMOVE(stcb, sctp_tcblist);
2588 if (stcb->asoc.in_asocid_hash) {
2589 LIST_REMOVE(stcb, sctp_tcbasocidhash);
2591 /* Now insert the new_inp into the TCP connected hash */
2592 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
2594 LIST_INSERT_HEAD(head, new_inp, sctp_hash);
2595 /* Its safe to access */
2596 new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
2598 /* Now move the tcb into the endpoint list */
2599 LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist);
2601 * Question, do we even need to worry about the ep-hash since we
2602 * only have one connection? Probably not :> so lets get rid of it
2603 * and not suck up any kernel memory in that.
2605 if (stcb->asoc.in_asocid_hash) {
2606 struct sctpasochead *lhd;
2608 lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id,
2609 new_inp->hashasocidmark)];
2610 LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash);
2612 /* Ok. Let's restart timer. */
2613 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2614 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp,
2618 SCTP_INP_INFO_WUNLOCK();
2619 if (new_inp->sctp_tcbhash != NULL) {
2620 SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark);
2621 new_inp->sctp_tcbhash = NULL;
2623 if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2624 /* Subset bound, so copy in the laddr list from the old_inp */
2625 LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) {
2626 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2627 if (laddr == NULL) {
2629 * Gak, what can we do? This assoc is really
2630 * HOSED. We probably should send an abort
2633 SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n");
2636 SCTP_INCR_LADDR_COUNT();
2637 bzero(laddr, sizeof(*laddr));
2638 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2639 laddr->ifa = oladdr->ifa;
2640 atomic_add_int(&laddr->ifa->refcount, 1);
2641 LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr,
2643 new_inp->laddr_count++;
2644 if (oladdr == stcb->asoc.last_used_address) {
2645 stcb->asoc.last_used_address = laddr;
2650 * Now any running timers need to be adjusted since we really don't
2651 * care if they are running or not just blast in the new_inp into
2655 stcb->asoc.dack_timer.ep = (void *)new_inp;
2656 stcb->asoc.asconf_timer.ep = (void *)new_inp;
2657 stcb->asoc.strreset_timer.ep = (void *)new_inp;
2658 stcb->asoc.shut_guard_timer.ep = (void *)new_inp;
2659 stcb->asoc.autoclose_timer.ep = (void *)new_inp;
2660 stcb->asoc.delayed_event_timer.ep = (void *)new_inp;
2661 stcb->asoc.delete_prim_timer.ep = (void *)new_inp;
2662 /* now what about the nets? */
2663 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2664 net->pmtu_timer.ep = (void *)new_inp;
2665 net->hb_timer.ep = (void *)new_inp;
2666 net->rxt_timer.ep = (void *)new_inp;
2668 SCTP_INP_WUNLOCK(new_inp);
2669 SCTP_INP_WUNLOCK(old_inp);
2675 /* sctp_ifap is used to bypass normal local address validation checks */
2677 sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
2678 struct sctp_ifa *sctp_ifap, struct thread *p)
2680 /* bind a ep to a socket address */
2681 struct sctppcbhead *head;
2682 struct sctp_inpcb *inp, *inp_tmp;
2683 struct inpcb *ip_inp;
2684 int port_reuse_active = 0;
2693 inp = (struct sctp_inpcb *)so->so_pcb;
2694 ip_inp = (struct inpcb *)so->so_pcb;
2697 SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port: %d\n",
2698 ntohs(((struct sockaddr_in *)addr)->sin_port));
2699 SCTPDBG(SCTP_DEBUG_PCB1, "Addr: ");
2700 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
2703 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2704 /* already did a bind, subsequent binds NOT allowed ! */
2705 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2710 panic("null proc/thread");
2713 switch (addr->sa_family) {
2717 struct sockaddr_in *sin;
2719 /* IPV6_V6ONLY socket? */
2720 if (SCTP_IPV6_V6ONLY(ip_inp)) {
2721 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2724 if (addr->sa_len != sizeof(*sin)) {
2725 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2728 sin = (struct sockaddr_in *)addr;
2729 lport = sin->sin_port;
2731 * For LOOPBACK the prison_local_ip4() call
2732 * will transmute the ip address to the
2735 if (p && (error = prison_local_ip4(p->td_ucred, &sin->sin_addr)) != 0) {
2736 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2739 if (sin->sin_addr.s_addr != INADDR_ANY) {
2749 * Only for pure IPv6 Address. (No IPv4
2752 struct sockaddr_in6 *sin6;
2754 sin6 = (struct sockaddr_in6 *)addr;
2756 if (addr->sa_len != sizeof(*sin6)) {
2757 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2760 lport = sin6->sin6_port;
2762 * For LOOPBACK the prison_local_ip6() call
2763 * will transmute the ipv6 address to the
2766 if (p && (error = prison_local_ip6(p->td_ucred, &sin6->sin6_addr,
2767 (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
2768 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2771 if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2773 /* KAME hack: embed scopeid */
2774 if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
2775 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2779 /* this must be cleared for ifa_ifwithaddr() */
2780 sin6->sin6_scope_id = 0;
2785 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EAFNOSUPPORT);
2786 return (EAFNOSUPPORT);
2789 SCTP_INP_INFO_WLOCK();
2790 SCTP_INP_WLOCK(inp);
2791 /* Setup a vrf_id to be the default for the non-bind-all case. */
2792 vrf_id = inp->def_vrf_id;
2794 /* increase our count due to the unlock we do */
2795 SCTP_INP_INCR_REF(inp);
2798 * Did the caller specify a port? if so we must see if an ep
2799 * already has this one bound.
2801 /* got to be root to get at low ports */
2802 if (ntohs(lport) < IPPORT_RESERVED) {
2804 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2806 SCTP_INP_DECR_REF(inp);
2807 SCTP_INP_WUNLOCK(inp);
2808 SCTP_INP_INFO_WUNLOCK();
2813 SCTP_INP_DECR_REF(inp);
2814 SCTP_INP_WUNLOCK(inp);
2815 SCTP_INP_INFO_WUNLOCK();
2816 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2819 SCTP_INP_WUNLOCK(inp);
2821 vrf_id = inp->def_vrf_id;
2822 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2823 if (inp_tmp != NULL) {
2825 * lock guy returned and lower count note
2826 * that we are not bound so inp_tmp should
2827 * NEVER be inp. And it is this inp
2828 * (inp_tmp) that gets the reference bump,
2829 * so we must lower it.
2831 SCTP_INP_DECR_REF(inp_tmp);
2833 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2834 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2836 * Ok, must be one-2-one and
2837 * allowing port re-use
2839 port_reuse_active = 1;
2840 goto continue_anyway;
2842 SCTP_INP_DECR_REF(inp);
2843 SCTP_INP_INFO_WUNLOCK();
2844 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2845 return (EADDRINUSE);
2848 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2849 if (inp_tmp != NULL) {
2851 * lock guy returned and lower count note
2852 * that we are not bound so inp_tmp should
2853 * NEVER be inp. And it is this inp
2854 * (inp_tmp) that gets the reference bump,
2855 * so we must lower it.
2857 SCTP_INP_DECR_REF(inp_tmp);
2859 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2860 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2862 * Ok, must be one-2-one and
2863 * allowing port re-use
2865 port_reuse_active = 1;
2866 goto continue_anyway;
2868 SCTP_INP_DECR_REF(inp);
2869 SCTP_INP_INFO_WUNLOCK();
2870 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2871 return (EADDRINUSE);
2875 SCTP_INP_WLOCK(inp);
2877 /* verify that no lport is not used by a singleton */
2878 if ((port_reuse_active == 0) &&
2879 (inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))) {
2880 /* Sorry someone already has this one bound */
2881 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2882 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2883 port_reuse_active = 1;
2885 SCTP_INP_DECR_REF(inp);
2886 SCTP_INP_WUNLOCK(inp);
2887 SCTP_INP_INFO_WUNLOCK();
2888 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2889 return (EADDRINUSE);
2894 uint16_t first, last, candidate;
2898 if (ip_inp->inp_flags & INP_HIGHPORT) {
2899 first = MODULE_GLOBAL(ipport_hifirstauto);
2900 last = MODULE_GLOBAL(ipport_hilastauto);
2901 } else if (ip_inp->inp_flags & INP_LOWPORT) {
2903 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2905 SCTP_INP_DECR_REF(inp);
2906 SCTP_INP_WUNLOCK(inp);
2907 SCTP_INP_INFO_WUNLOCK();
2908 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2911 first = MODULE_GLOBAL(ipport_lowfirstauto);
2912 last = MODULE_GLOBAL(ipport_lowlastauto);
2914 first = MODULE_GLOBAL(ipport_firstauto);
2915 last = MODULE_GLOBAL(ipport_lastauto);
2924 count = last - first + 1; /* number of candidates */
2925 candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count);
2929 if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) {
2934 SCTP_INP_DECR_REF(inp);
2935 SCTP_INP_WUNLOCK(inp);
2936 SCTP_INP_INFO_WUNLOCK();
2937 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2938 return (EADDRINUSE);
2940 if (candidate == last)
2943 candidate = candidate + 1;
2946 lport = htons(candidate);
2948 SCTP_INP_DECR_REF(inp);
2949 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE |
2950 SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
2952 * this really should not happen. The guy did a non-blocking
2953 * bind and then did a close at the same time.
2955 SCTP_INP_WUNLOCK(inp);
2956 SCTP_INP_INFO_WUNLOCK();
2957 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2960 /* ok we look clear to give out this port, so lets setup the binding */
2962 /* binding to all addresses, so just set in the proper flags */
2963 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL;
2964 /* set the automatic addr changes from kernel flag */
2965 if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) {
2966 sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
2967 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
2969 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
2970 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
2972 if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) {
2973 sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
2975 sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
2978 * set the automatic mobility_base from kernel flag (by
2981 if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) {
2982 sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE);
2983 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
2985 sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE);
2986 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
2989 * set the automatic mobility_fasthandoff from kernel flag
2992 if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) {
2993 sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF);
2994 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
2996 sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF);
2997 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3001 * bind specific, make sure flags is off and add a new
3002 * address structure to the sctp_addr_list inside the ep
3005 * We will need to allocate one and insert it at the head. The
3006 * socketopt call can just insert new addresses in there as
3007 * well. It will also have to do the embed scope kame hack
3008 * too (before adding).
3010 struct sctp_ifa *ifa;
3011 struct sockaddr_storage store_sa;
3013 memset(&store_sa, 0, sizeof(store_sa));
3014 switch (addr->sa_family) {
3018 struct sockaddr_in *sin;
3020 sin = (struct sockaddr_in *)&store_sa;
3021 memcpy(sin, addr, sizeof(struct sockaddr_in));
3029 struct sockaddr_in6 *sin6;
3031 sin6 = (struct sockaddr_in6 *)&store_sa;
3032 memcpy(sin6, addr, sizeof(struct sockaddr_in6));
3033 sin6->sin6_port = 0;
3041 * first find the interface with the bound address need to
3042 * zero out the port to find the address! yuck! can't do
3043 * this earlier since need port for sctp_pcb_findep()
3045 if (sctp_ifap != NULL) {
3049 * Note for BSD we hit here always other O/S's will
3050 * pass things in via the sctp_ifap argument
3053 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&store_sa,
3054 vrf_id, SCTP_ADDR_NOT_LOCKED);
3057 /* Can't find an interface with that address */
3058 SCTP_INP_WUNLOCK(inp);
3059 SCTP_INP_INFO_WUNLOCK();
3060 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRNOTAVAIL);
3061 return (EADDRNOTAVAIL);
3064 if (addr->sa_family == AF_INET6) {
3065 /* GAK, more FIXME IFA lock? */
3066 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
3067 /* Can't bind a non-existent addr. */
3068 SCTP_INP_WUNLOCK(inp);
3069 SCTP_INP_INFO_WUNLOCK();
3070 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3075 /* we're not bound all */
3076 inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL;
3077 /* allow bindx() to send ASCONF's for binding changes */
3078 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3079 /* clear automatic addr changes from kernel flag */
3080 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3082 /* add this address to the endpoint list */
3083 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0);
3085 SCTP_INP_WUNLOCK(inp);
3086 SCTP_INP_INFO_WUNLOCK();
3091 /* find the bucket */
3092 if (port_reuse_active) {
3093 /* Put it into tcp 1-2-1 hash */
3094 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))];
3095 inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
3097 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))];
3099 /* put it in the bucket */
3100 LIST_INSERT_HEAD(head, inp, sctp_hash);
3101 SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n",
3102 (void *)head, ntohs(lport), port_reuse_active);
3103 /* set in the port */
3104 inp->sctp_lport = lport;
3106 /* turn off just the unbound flag */
3107 inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
3108 SCTP_INP_WUNLOCK(inp);
3109 SCTP_INP_INFO_WUNLOCK();
3115 sctp_iterator_inp_being_freed(struct sctp_inpcb *inp)
3117 struct sctp_iterator *it, *nit;
3120 * We enter with the only the ITERATOR_LOCK in place and a write
3121 * lock on the inp_info stuff.
3123 it = sctp_it_ctl.cur_it;
3124 if (it && (it->vn != curvnet)) {
3125 /* Its not looking at our VNET */
3128 if (it && (it->inp == inp)) {
3130 * This is tricky and we hold the iterator lock, but when it
3131 * returns and gets the lock (when we release it) the
3132 * iterator will try to operate on inp. We need to stop that
3133 * from happening. But of course the iterator has a
3134 * reference on the stcb and inp. We can mark it and it will
3137 * If its a single iterator situation, we set the end iterator
3138 * flag. Otherwise we set the iterator to go to the next
3142 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3143 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
3145 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_INP;
3149 * Now go through and remove any single reference to our inp that
3150 * may be still pending on the list
3152 SCTP_IPI_ITERATOR_WQ_LOCK();
3153 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
3154 if (it->vn != curvnet) {
3157 if (it->inp == inp) {
3158 /* This one points to me is it inp specific? */
3159 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3160 /* Remove and free this one */
3161 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
3163 if (it->function_atend != NULL) {
3164 (*it->function_atend) (it->pointer, it->val);
3166 SCTP_FREE(it, SCTP_M_ITER);
3168 it->inp = LIST_NEXT(it->inp, sctp_list);
3170 SCTP_INP_INCR_REF(it->inp);
3174 * When its put in the refcnt is incremented so decr
3177 SCTP_INP_DECR_REF(inp);
3180 SCTP_IPI_ITERATOR_WQ_UNLOCK();
3183 /* release sctp_inpcb unbind the port */
3185 sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
3188 * Here we free a endpoint. We must find it (if it is in the Hash
3189 * table) and remove it from there. Then we must also find it in the
3190 * overall list and remove it from there. After all removals are
3191 * complete then any timer has to be stopped. Then start the actual
3192 * freeing. a) Any local lists. b) Any associations. c) The hash of
3193 * all associations. d) finally the ep itself.
3195 struct sctp_tcb *asoc, *nasoc;
3196 struct sctp_laddr *laddr, *nladdr;
3197 struct inpcb *ip_pcb;
3199 int being_refed = 0;
3200 struct sctp_queued_to_read *sq, *nsq;
3202 sctp_sharedkey_t *shared_key, *nshared_key;
3205 #ifdef SCTP_LOG_CLOSING
3206 sctp_log_closing(inp, NULL, 0);
3208 SCTP_ITERATOR_LOCK();
3209 /* mark any iterators on the list or being processed */
3210 sctp_iterator_inp_being_freed(inp);
3211 SCTP_ITERATOR_UNLOCK();
3212 so = inp->sctp_socket;
3213 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
3214 /* been here before.. eeks.. get out of here */
3215 SCTP_PRINTF("This conflict in free SHOULD not be happening! from %d, imm %d\n", from, immediate);
3216 #ifdef SCTP_LOG_CLOSING
3217 sctp_log_closing(inp, NULL, 1);
3221 SCTP_ASOC_CREATE_LOCK(inp);
3222 SCTP_INP_INFO_WLOCK();
3224 SCTP_INP_WLOCK(inp);
3225 if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
3226 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP;
3227 /* socket is gone, so no more wakeups allowed */
3228 inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE;
3229 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
3230 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
3233 /* First time through we have the socket lock, after that no more. */
3234 sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL,
3235 SCTP_FROM_SCTP_PCB + SCTP_LOC_1);
3238 sctp_m_freem(inp->control);
3239 inp->control = NULL;
3242 sctp_m_freem(inp->pkt);
3245 ip_pcb = &inp->ip_inp.inp; /* we could just cast the main pointer
3246 * here but I will be nice :> (i.e.
3248 if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
3252 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3253 SCTP_TCB_LOCK(asoc);
3254 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3255 /* Skip guys being freed */
3257 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3259 * Special case - we did not start a
3260 * kill timer on the asoc due to it
3261 * was not closed. So go ahead and
3264 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3265 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3267 SCTP_TCB_UNLOCK(asoc);
3270 if (((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_WAIT) ||
3271 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_ECHOED)) &&
3272 (asoc->asoc.total_output_queue_size == 0)) {
3274 * If we have data in queue, we don't want
3275 * to just free since the app may have done,
3276 * send()/close or connect/send/close. And
3277 * it wants the data to get across first.
3279 /* Just abandon things in the front states */
3280 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE,
3281 SCTP_FROM_SCTP_PCB + SCTP_LOC_2) == 0) {
3286 /* Disconnect the socket please */
3287 asoc->sctp_socket = NULL;
3288 asoc->asoc.state |= SCTP_STATE_CLOSED_SOCKET;
3289 if ((asoc->asoc.size_on_reasm_queue > 0) ||
3290 (asoc->asoc.control_pdapi) ||
3291 (asoc->asoc.size_on_all_streams > 0) ||
3292 (so && (so->so_rcv.sb_cc > 0))) {
3293 /* Left with Data unread */
3294 struct mbuf *op_err;
3296 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3297 0, M_DONTWAIT, 1, MT_DATA);
3299 /* Fill in the user initiated abort */
3300 struct sctp_paramhdr *ph;
3303 SCTP_BUF_LEN(op_err) =
3304 sizeof(struct sctp_paramhdr) + sizeof(uint32_t);
3306 struct sctp_paramhdr *);
3307 ph->param_type = htons(
3308 SCTP_CAUSE_USER_INITIATED_ABT);
3309 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3310 ippp = (uint32_t *) (ph + 1);
3311 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_3);
3313 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_3;
3314 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3315 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3316 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3317 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3318 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3320 if (sctp_free_assoc(inp, asoc,
3321 SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_4) == 0) {
3325 } else if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3326 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3327 (asoc->asoc.stream_queue_cnt == 0)) {
3328 if (asoc->asoc.locked_on_sending) {
3331 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
3332 (SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
3333 struct sctp_nets *netp;
3335 if (asoc->asoc.alternate) {
3336 netp = asoc->asoc.alternate;
3338 netp = asoc->asoc.primary_destination;
3341 * there is nothing queued to send,
3342 * so I send shutdown
3344 sctp_send_shutdown(asoc, netp);
3345 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3346 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3347 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3349 SCTP_SET_STATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_SENT);
3350 SCTP_CLEAR_SUBSTATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_PENDING);
3351 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, asoc->sctp_ep, asoc,
3353 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3354 asoc->asoc.primary_destination);
3355 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED);
3358 /* mark into shutdown pending */
3359 struct sctp_stream_queue_pending *sp;
3361 asoc->asoc.state |= SCTP_STATE_SHUTDOWN_PENDING;
3362 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3363 asoc->asoc.primary_destination);
3364 if (asoc->asoc.locked_on_sending) {
3365 sp = TAILQ_LAST(&((asoc->asoc.locked_on_sending)->outqueue),
3368 SCTP_PRINTF("Error, sp is NULL, locked on sending is %p strm:%d\n",
3369 (void *)asoc->asoc.locked_on_sending,
3370 asoc->asoc.locked_on_sending->stream_no);
3372 if ((sp->length == 0) && (sp->msg_is_complete == 0))
3373 asoc->asoc.state |= SCTP_STATE_PARTIAL_MSG_LEFT;
3376 if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3377 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3378 (asoc->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
3379 struct mbuf *op_err;
3382 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3383 0, M_DONTWAIT, 1, MT_DATA);
3389 struct sctp_paramhdr *ph;
3392 SCTP_BUF_LEN(op_err) =
3393 (sizeof(struct sctp_paramhdr) +
3396 struct sctp_paramhdr *);
3397 ph->param_type = htons(
3398 SCTP_CAUSE_USER_INITIATED_ABT);
3399 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3400 ippp = (uint32_t *) (ph + 1);
3401 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_5);
3403 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_5;
3404 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3405 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3406 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3407 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3408 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3410 if (sctp_free_assoc(inp, asoc,
3411 SCTP_PCBFREE_NOFORCE,
3412 SCTP_FROM_SCTP_PCB + SCTP_LOC_6) == 0) {
3417 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
3421 SCTP_TCB_UNLOCK(asoc);
3423 /* now is there some left in our SHUTDOWN state? */
3425 #ifdef SCTP_LOG_CLOSING
3426 sctp_log_closing(inp, NULL, 2);
3428 inp->sctp_socket = NULL;
3429 SCTP_INP_WUNLOCK(inp);
3430 SCTP_ASOC_CREATE_UNLOCK(inp);
3431 SCTP_INP_INFO_WUNLOCK();
3435 inp->sctp_socket = NULL;
3436 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) !=
3437 SCTP_PCB_FLAGS_UNBOUND) {
3439 * ok, this guy has been bound. It's port is somewhere in
3440 * the SCTP_BASE_INFO(hash table). Remove it!
3442 LIST_REMOVE(inp, sctp_hash);
3443 inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND;
3446 * If there is a timer running to kill us, forget it, since it may
3447 * have a contest on the INP lock.. which would cause us to die ...
3450 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3451 SCTP_TCB_LOCK(asoc);
3452 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3453 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3454 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3455 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3458 SCTP_TCB_UNLOCK(asoc);
3461 /* Free associations that are NOT killing us */
3462 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_COOKIE_WAIT) &&
3463 ((asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) {
3464 struct mbuf *op_err;
3467 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3468 0, M_DONTWAIT, 1, MT_DATA);
3470 /* Fill in the user initiated abort */
3471 struct sctp_paramhdr *ph;
3473 SCTP_BUF_LEN(op_err) = (sizeof(struct sctp_paramhdr) +
3475 ph = mtod(op_err, struct sctp_paramhdr *);
3476 ph->param_type = htons(
3477 SCTP_CAUSE_USER_INITIATED_ABT);
3478 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3479 ippp = (uint32_t *) (ph + 1);
3480 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_7);
3483 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_7;
3484 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3485 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3486 } else if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3488 SCTP_TCB_UNLOCK(asoc);
3491 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3492 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3493 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3495 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_8) == 0) {
3500 /* Ok we have someone out there that will kill us */
3501 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3502 #ifdef SCTP_LOG_CLOSING
3503 sctp_log_closing(inp, NULL, 3);
3505 SCTP_INP_WUNLOCK(inp);
3506 SCTP_ASOC_CREATE_UNLOCK(inp);
3507 SCTP_INP_INFO_WUNLOCK();
3510 if (SCTP_INP_LOCK_CONTENDED(inp))
3512 if (SCTP_INP_READ_CONTENDED(inp))
3514 if (SCTP_ASOC_CREATE_LOCK_CONTENDED(inp))
3517 if ((inp->refcount) ||
3519 (inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) {
3520 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3521 #ifdef SCTP_LOG_CLOSING
3522 sctp_log_closing(inp, NULL, 4);
3524 sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
3525 SCTP_INP_WUNLOCK(inp);
3526 SCTP_ASOC_CREATE_UNLOCK(inp);
3527 SCTP_INP_INFO_WUNLOCK();
3530 inp->sctp_ep.signature_change.type = 0;
3531 inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE;
3533 * Remove it from the list .. last thing we need a lock for.
3535 LIST_REMOVE(inp, sctp_list);
3536 SCTP_INP_WUNLOCK(inp);
3537 SCTP_ASOC_CREATE_UNLOCK(inp);
3538 SCTP_INP_INFO_WUNLOCK();
3540 * Now we release all locks. Since this INP cannot be found anymore
3541 * except possibly by the kill timer that might be running. We call
3542 * the drain function here. It should hit the case were it sees the
3543 * ACTIVE flag cleared and exit out freeing us to proceed and
3544 * destroy everything.
3546 if (from != SCTP_CALLED_FROM_INPKILL_TIMER) {
3547 (void)SCTP_OS_TIMER_STOP_DRAIN(&inp->sctp_ep.signature_change.timer);
3549 /* Probably un-needed */
3550 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3553 #ifdef SCTP_LOG_CLOSING
3554 sctp_log_closing(inp, NULL, 5);
3558 if ((inp->sctp_asocidhash) != NULL) {
3559 SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark);
3560 inp->sctp_asocidhash = NULL;
3562 /* sa_ignore FREED_MEMORY */
3563 TAILQ_FOREACH_SAFE(sq, &inp->read_queue, next, nsq) {
3564 /* Its only abandoned if it had data left */
3566 SCTP_STAT_INCR(sctps_left_abandon);
3568 TAILQ_REMOVE(&inp->read_queue, sq, next);
3569 sctp_free_remote_addr(sq->whoFrom);
3571 so->so_rcv.sb_cc -= sq->length;
3573 sctp_m_freem(sq->data);
3577 * no need to free the net count, since at this point all
3580 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
3581 SCTP_DECR_READQ_COUNT();
3583 /* Now the sctp_pcb things */
3585 * free each asoc if it is not already closed/free. we can't use the
3586 * macro here since le_next will get freed as part of the
3587 * sctp_free_assoc() call.
3591 ipsec_delete_pcbpolicy(ip_pcb);
3594 /* Unlocks not needed since the socket is gone now */
3596 if (ip_pcb->inp_options) {
3597 (void)sctp_m_free(ip_pcb->inp_options);
3598 ip_pcb->inp_options = 0;
3601 if (ip_pcb->inp_vflag & INP_IPV6) {
3602 struct in6pcb *in6p;
3604 in6p = (struct in6pcb *)inp;
3605 ip6_freepcbopts(in6p->in6p_outputopts);
3608 ip_pcb->inp_vflag = 0;
3609 /* free up authentication fields */
3610 if (inp->sctp_ep.local_auth_chunks != NULL)
3611 sctp_free_chunklist(inp->sctp_ep.local_auth_chunks);
3612 if (inp->sctp_ep.local_hmacs != NULL)
3613 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3615 LIST_FOREACH_SAFE(shared_key, &inp->sctp_ep.shared_keys, next, nshared_key) {
3616 LIST_REMOVE(shared_key, next);
3617 sctp_free_sharedkey(shared_key);
3618 /* sa_ignore FREED_MEMORY */
3622 * if we have an address list the following will free the list of
3623 * ifaddr's that are set into this ep. Again macro limitations here,
3624 * since the LIST_FOREACH could be a bad idea.
3626 LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
3627 sctp_remove_laddr(laddr);
3630 #ifdef SCTP_TRACK_FREED_ASOCS
3632 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_free_list, sctp_tcblist, nasoc) {
3633 LIST_REMOVE(asoc, sctp_tcblist);
3634 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), asoc);
3635 SCTP_DECR_ASOC_COUNT();
3637 /* *** END TEMP CODE *** */
3639 /* Now lets see about freeing the EP hash table. */
3640 if (inp->sctp_tcbhash != NULL) {
3641 SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
3642 inp->sctp_tcbhash = NULL;
3644 /* Now we must put the ep memory back into the zone pool */
3645 INP_LOCK_DESTROY(&inp->ip_inp.inp);
3646 SCTP_INP_LOCK_DESTROY(inp);
3647 SCTP_INP_READ_DESTROY(inp);
3648 SCTP_ASOC_CREATE_LOCK_DESTROY(inp);
3649 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
3650 SCTP_DECR_EP_COUNT();
3655 sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
3657 struct sctp_nets *net;
3659 /* locate the address */
3660 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3661 if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr))
3669 sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
3671 struct sctp_ifa *sctp_ifa;
3673 sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED);
3682 * add's a remote endpoint address, done with the INIT/INIT-ACK as well as
3683 * when a ASCONF arrives that adds it. It will also initialize all the cwnd
3687 sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
3688 struct sctp_nets **netp, int set_scope, int from)
3691 * The following is redundant to the same lines in the
3692 * sctp_aloc_assoc() but is needed since others call the add address
3695 struct sctp_nets *net, *netfirst;
3698 SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ",
3700 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr);
3702 netfirst = sctp_findnet(stcb, newaddr);
3705 * Lie and return ok, we don't want to make the association
3706 * go away for this behavior. It will happen in the TCP
3707 * model in a connected socket. It does not reach the hash
3708 * table until after the association is built so it can't be
3709 * found. Mark as reachable, since the initial creation will
3710 * have been cleared and the NOT_IN_ASSOC flag will have
3711 * been added... and we don't want to end up removing it
3714 if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) {
3715 netfirst->dest_state = (SCTP_ADDR_REACHABLE |
3716 SCTP_ADDR_UNCONFIRMED);
3718 netfirst->dest_state = SCTP_ADDR_REACHABLE;
3724 switch (newaddr->sa_family) {
3728 struct sockaddr_in *sin;
3730 sin = (struct sockaddr_in *)newaddr;
3731 if (sin->sin_addr.s_addr == 0) {
3732 /* Invalid address */
3735 /* zero out the bzero area */
3736 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
3738 /* assure len is set */
3739 sin->sin_len = sizeof(struct sockaddr_in);
3741 #ifdef SCTP_DONT_DO_PRIVADDR_SCOPE
3742 stcb->ipv4_local_scope = 1;
3744 if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
3745 stcb->asoc.ipv4_local_scope = 1;
3747 #endif /* SCTP_DONT_DO_PRIVADDR_SCOPE */
3749 /* Validate the address is in scope */
3750 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) &&
3751 (stcb->asoc.ipv4_local_scope == 0)) {
3761 struct sockaddr_in6 *sin6;
3763 sin6 = (struct sockaddr_in6 *)newaddr;
3764 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3765 /* Invalid address */
3768 /* assure len is set */
3769 sin6->sin6_len = sizeof(struct sockaddr_in6);
3771 if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) {
3772 stcb->asoc.loopback_scope = 1;
3773 stcb->asoc.local_scope = 0;
3774 stcb->asoc.ipv4_local_scope = 1;
3775 stcb->asoc.site_scope = 1;
3776 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
3778 * If the new destination is a
3779 * LINK_LOCAL we must have common
3780 * site scope. Don't set the local
3781 * scope since we may not share all
3782 * links, only loopback can do this.
3783 * Links on the local network would
3784 * also be on our private network
3787 stcb->asoc.ipv4_local_scope = 1;
3788 stcb->asoc.site_scope = 1;
3789 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
3791 * If the new destination is
3792 * SITE_LOCAL then we must have site
3795 stcb->asoc.site_scope = 1;
3798 /* Validate the address is in scope */
3799 if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) &&
3800 (stcb->asoc.loopback_scope == 0)) {
3802 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
3803 (stcb->asoc.local_scope == 0)) {
3805 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
3806 (stcb->asoc.site_scope == 0)) {
3814 /* not supported family type */
3817 net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets);
3821 SCTP_INCR_RADDR_COUNT();
3822 bzero(net, sizeof(struct sctp_nets));
3823 (void)SCTP_GETTIME_TIMEVAL(&net->start_time);
3824 memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len);
3825 switch (newaddr->sa_family) {
3828 ((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport;
3833 ((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport;
3839 net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id);
3840 if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) {
3841 stcb->asoc.loopback_scope = 1;
3842 stcb->asoc.ipv4_local_scope = 1;
3843 stcb->asoc.local_scope = 0;
3844 stcb->asoc.site_scope = 1;
3847 net->failure_threshold = stcb->asoc.def_net_failure;
3848 net->pf_threshold = stcb->asoc.def_net_pf_threshold;
3849 if (addr_inscope == 0) {
3850 net->dest_state = (SCTP_ADDR_REACHABLE |
3851 SCTP_ADDR_OUT_OF_SCOPE);
3853 if (from == SCTP_ADDR_IS_CONFIRMED)
3854 /* SCTP_ADDR_IS_CONFIRMED is passed by connect_x */
3855 net->dest_state = SCTP_ADDR_REACHABLE;
3857 net->dest_state = SCTP_ADDR_REACHABLE |
3858 SCTP_ADDR_UNCONFIRMED;
3861 * We set this to 0, the timer code knows that this means its an
3864 net->rto_needed = 1;
3866 net->RTO_measured = 0;
3867 stcb->asoc.numnets++;
3869 net->cwr_window_tsn = net->last_cwr_tsn = stcb->asoc.sending_seq - 1;
3870 net->port = stcb->asoc.port;
3871 net->dscp = stcb->asoc.default_dscp;
3873 net->flowlabel = stcb->asoc.default_flowlabel;
3875 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
3876 net->dest_state |= SCTP_ADDR_NOHB;
3878 net->dest_state &= ~SCTP_ADDR_NOHB;
3880 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DO_NOT_PMTUD)) {
3881 net->dest_state |= SCTP_ADDR_NO_PMTUD;
3883 net->dest_state &= ~SCTP_ADDR_NO_PMTUD;
3885 net->heart_beat_delay = stcb->asoc.heart_beat_delay;
3886 /* Init the timer structure */
3887 SCTP_OS_TIMER_INIT(&net->rxt_timer.timer);
3888 SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer);
3889 SCTP_OS_TIMER_INIT(&net->hb_timer.timer);
3891 /* Now generate a route for this guy */
3893 /* KAME hack: embed scopeid */
3894 if (newaddr->sa_family == AF_INET6) {
3895 struct sockaddr_in6 *sin6;
3897 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3898 (void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone));
3899 sin6->sin6_scope_id = 0;
3902 SCTP_RTALLOC((sctp_route_t *) & net->ro, stcb->asoc.vrf_id);
3904 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) {
3905 /* Get source address */
3906 net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep,
3908 (sctp_route_t *) & net->ro,
3912 /* Now get the interface MTU */
3913 if (net->ro._s_addr && net->ro._s_addr->ifn_p) {
3914 net->mtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p);
3919 rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_rt);
3922 * Start things off to match mtu of
3925 SCTP_SET_MTU_OF_ROUTE(&net->ro._l_addr.sa,
3926 net->ro.ro_rt, net->mtu);
3929 * we take the route mtu over the interface,
3930 * since the route may be leading out the
3931 * loopback, or a different interface.
3937 if (net->mtu == 0) {
3938 switch (newaddr->sa_family) {
3941 net->mtu = SCTP_DEFAULT_MTU;
3954 net->mtu -= (uint32_t) sizeof(struct udphdr);
3956 if (from == SCTP_ALLOC_ASOC) {
3957 stcb->asoc.smallest_mtu = net->mtu;
3959 if (stcb->asoc.smallest_mtu > net->mtu) {
3960 stcb->asoc.smallest_mtu = net->mtu;
3963 if (newaddr->sa_family == AF_INET6) {
3964 struct sockaddr_in6 *sin6;
3966 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3967 (void)sa6_recoverscope(sin6);
3971 /* JRS - Use the congestion control given in the CC module */
3972 if (stcb->asoc.cc_functions.sctp_set_initial_cc_param != NULL)
3973 (*stcb->asoc.cc_functions.sctp_set_initial_cc_param) (stcb, net);
3976 * CMT: CUC algo - set find_pseudo_cumack to TRUE (1) at beginning
3977 * of assoc (2005/06/27, iyengar@cis.udel.edu)
3979 net->find_pseudo_cumack = 1;
3980 net->find_rtx_pseudo_cumack = 1;
3981 net->src_addr_selected = 0;
3982 /* Choose an initial flowid. */
3983 net->flowid = stcb->asoc.my_vtag ^
3984 ntohs(stcb->rport) ^
3985 ntohs(stcb->sctp_ep->sctp_lport);
3992 netfirst = TAILQ_FIRST(&stcb->asoc.nets);
3993 if (net->ro.ro_rt == NULL) {
3994 /* Since we have no route put it at the back */
3995 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
3996 } else if (netfirst == NULL) {
3997 /* We are the first one in the pool. */
3998 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
3999 } else if (netfirst->ro.ro_rt == NULL) {
4001 * First one has NO route. Place this one ahead of the first
4004 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4005 } else if (net->ro.ro_rt->rt_ifp != netfirst->ro.ro_rt->rt_ifp) {
4007 * This one has a different interface than the one at the
4008 * top of the list. Place it ahead.
4010 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4013 * Ok we have the same interface as the first one. Move
4014 * forward until we find either a) one with a NULL route...
4015 * insert ahead of that b) one with a different ifp.. insert
4016 * after that. c) end of the list.. insert at the tail.
4018 struct sctp_nets *netlook;
4021 netlook = TAILQ_NEXT(netfirst, sctp_next);
4022 if (netlook == NULL) {
4023 /* End of the list */
4024 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4026 } else if (netlook->ro.ro_rt == NULL) {
4027 /* next one has NO route */
4028 TAILQ_INSERT_BEFORE(netfirst, net, sctp_next);
4030 } else if (netlook->ro.ro_rt->rt_ifp != net->ro.ro_rt->rt_ifp) {
4031 TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook,
4037 } while (netlook != NULL);
4040 /* got to have a primary set */
4041 if (stcb->asoc.primary_destination == 0) {
4042 stcb->asoc.primary_destination = net;
4043 } else if ((stcb->asoc.primary_destination->ro.ro_rt == NULL) &&
4045 ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
4046 /* No route to current primary adopt new primary */
4047 stcb->asoc.primary_destination = net;
4049 /* Validate primary is first */
4050 net = TAILQ_FIRST(&stcb->asoc.nets);
4051 if ((net != stcb->asoc.primary_destination) &&
4052 (stcb->asoc.primary_destination)) {
4054 * first one on the list is NOT the primary sctp_cmpaddr()
4055 * is much more efficient if the primary is the first on the
4058 TAILQ_REMOVE(&stcb->asoc.nets,
4059 stcb->asoc.primary_destination, sctp_next);
4060 TAILQ_INSERT_HEAD(&stcb->asoc.nets,
4061 stcb->asoc.primary_destination, sctp_next);
4068 sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
4071 struct sctpasochead *head;
4072 struct sctp_tcb *lstcb;
4074 SCTP_INP_WLOCK(inp);
4076 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
4078 SCTP_INP_WUNLOCK(inp);
4082 * We don't allow assoc id to be one of SCTP_FUTURE_ASSOC,
4083 * SCTP_CURRENT_ASSOC and SCTP_ALL_ASSOC.
4085 if (inp->sctp_associd_counter <= SCTP_ALL_ASSOC) {
4086 inp->sctp_associd_counter = SCTP_ALL_ASSOC + 1;
4088 id = inp->sctp_associd_counter;
4089 inp->sctp_associd_counter++;
4090 lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t) id, 0);
4094 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
4095 LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash);
4096 stcb->asoc.in_asocid_hash = 1;
4097 SCTP_INP_WUNLOCK(inp);
4102 * allocate an association and add it to the endpoint. The caller must be
4103 * careful to add all additional addresses once they are know right away or
4104 * else the assoc will be may experience a blackout scenario.
4107 sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
4108 int *error, uint32_t override_tag, uint32_t vrf_id,
4112 /* note the p argument is only valid in unbound sockets */
4114 struct sctp_tcb *stcb;
4115 struct sctp_association *asoc;
4116 struct sctpasochead *head;
4121 * Assumption made here: Caller has done a
4122 * sctp_findassociation_ep_addr(ep, addr's); to make sure the
4123 * address does not exist already.
4125 if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) {
4126 /* Hit max assoc, sorry no more */
4127 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4131 if (firstaddr == NULL) {
4132 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4136 SCTP_INP_RLOCK(inp);
4137 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
4138 ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) ||
4139 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4141 * If its in the TCP pool, its NOT allowed to create an
4142 * association. The parent listener needs to call
4143 * sctp_aloc_assoc.. or the one-2-many socket. If a peeled
4144 * off, or connected one does this.. its an error.
4146 SCTP_INP_RUNLOCK(inp);
4147 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4151 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
4152 (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)) {
4153 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) ||
4154 (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED)) {
4155 SCTP_INP_RUNLOCK(inp);
4156 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4161 SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:");
4164 SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr);
4165 switch (firstaddr->sa_family) {
4168 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4169 ntohs(((struct sockaddr_in *)firstaddr)->sin_port));
4174 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4175 ntohs(((struct sockaddr_in6 *)firstaddr)->sin6_port));
4182 SCTPDBG(SCTP_DEBUG_PCB3, "None\n");
4184 #endif /* SCTP_DEBUG */
4185 switch (firstaddr->sa_family) {
4189 struct sockaddr_in *sin;
4191 sin = (struct sockaddr_in *)firstaddr;
4192 if ((ntohs(sin->sin_port) == 0) ||
4193 (sin->sin_addr.s_addr == INADDR_ANY) ||
4194 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
4195 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
4196 /* Invalid address */
4197 SCTP_INP_RUNLOCK(inp);
4198 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4202 rport = sin->sin_port;
4209 struct sockaddr_in6 *sin6;
4211 sin6 = (struct sockaddr_in6 *)firstaddr;
4212 if ((ntohs(sin6->sin6_port) == 0) ||
4213 IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
4214 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
4215 /* Invalid address */
4216 SCTP_INP_RUNLOCK(inp);
4217 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4221 rport = sin6->sin6_port;
4226 /* not supported family type */
4227 SCTP_INP_RUNLOCK(inp);
4228 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4232 SCTP_INP_RUNLOCK(inp);
4233 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4235 * If you have not performed a bind, then we need to do the
4236 * ephemeral bind for you.
4238 if ((err = sctp_inpcb_bind(inp->sctp_socket,
4239 (struct sockaddr *)NULL,
4240 (struct sctp_ifa *)NULL,
4243 /* bind error, probably perm */
4248 stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb);
4250 /* out of memory? */
4251 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
4255 SCTP_INCR_ASOC_COUNT();
4257 bzero(stcb, sizeof(*stcb));
4260 asoc->assoc_id = sctp_aloc_a_assoc_id(inp, stcb);
4261 SCTP_TCB_LOCK_INIT(stcb);
4262 SCTP_TCB_SEND_LOCK_INIT(stcb);
4263 stcb->rport = rport;
4264 /* setup back pointer's */
4265 stcb->sctp_ep = inp;
4266 stcb->sctp_socket = inp->sctp_socket;
4267 if ((err = sctp_init_asoc(inp, stcb, override_tag, vrf_id))) {
4269 SCTP_TCB_LOCK_DESTROY(stcb);
4270 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4271 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4272 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4273 SCTP_DECR_ASOC_COUNT();
4278 SCTP_INP_INFO_WLOCK();
4279 SCTP_INP_WLOCK(inp);
4280 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
4281 /* inpcb freed while alloc going on */
4282 SCTP_TCB_LOCK_DESTROY(stcb);
4283 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4284 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4285 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4286 SCTP_INP_WUNLOCK(inp);
4287 SCTP_INP_INFO_WUNLOCK();
4288 SCTP_DECR_ASOC_COUNT();
4289 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4293 SCTP_TCB_LOCK(stcb);
4295 /* now that my_vtag is set, add it to the hash */
4296 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))];
4297 /* put it in the bucket in the vtag hash of assoc's for the system */
4298 LIST_INSERT_HEAD(head, stcb, sctp_asocs);
4299 SCTP_INP_INFO_WUNLOCK();
4301 if ((err = sctp_add_remote_addr(stcb, firstaddr, NULL, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC))) {
4302 /* failure.. memory error? */
4303 if (asoc->strmout) {
4304 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4305 asoc->strmout = NULL;
4307 if (asoc->mapping_array) {
4308 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4309 asoc->mapping_array = NULL;
4311 if (asoc->nr_mapping_array) {
4312 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4313 asoc->nr_mapping_array = NULL;
4315 SCTP_DECR_ASOC_COUNT();
4316 SCTP_TCB_LOCK_DESTROY(stcb);
4317 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4318 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4319 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4320 SCTP_INP_WUNLOCK(inp);
4321 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4325 /* Init all the timers */
4326 SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer);
4327 SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer);
4328 SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer);
4329 SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer);
4330 SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer);
4331 SCTP_OS_TIMER_INIT(&asoc->delayed_event_timer.timer);
4332 SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer);
4334 LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist);
4335 /* now file the port under the hash as well */
4336 if (inp->sctp_tcbhash != NULL) {
4337 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport,
4338 inp->sctp_hashmark)];
4339 LIST_INSERT_HEAD(head, stcb, sctp_tcbhash);
4341 SCTP_INP_WUNLOCK(inp);
4342 SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", (void *)stcb);
4348 sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
4350 struct sctp_association *asoc;
4354 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4355 if (net == asoc->primary_destination) {
4357 struct sctp_nets *lnet;
4359 lnet = TAILQ_FIRST(&asoc->nets);
4361 * Mobility adaptation Ideally, if deleted destination is
4362 * the primary, it becomes a fast retransmission trigger by
4363 * the subsequent SET PRIMARY. (by micchie)
4365 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
4366 SCTP_MOBILITY_BASE) ||
4367 sctp_is_mobility_feature_on(stcb->sctp_ep,
4368 SCTP_MOBILITY_FASTHANDOFF)) {
4369 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n");
4370 if (asoc->deleted_primary != NULL) {
4371 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n");
4374 asoc->deleted_primary = net;
4375 atomic_add_int(&net->ref_count, 1);
4376 memset(&net->lastsa, 0, sizeof(net->lastsa));
4377 memset(&net->lastsv, 0, sizeof(net->lastsv));
4378 sctp_mobility_feature_on(stcb->sctp_ep,
4379 SCTP_MOBILITY_PRIM_DELETED);
4380 sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED,
4381 stcb->sctp_ep, stcb, NULL);
4384 /* Try to find a confirmed primary */
4385 asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0);
4387 if (net == asoc->last_data_chunk_from) {
4389 asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets);
4391 if (net == asoc->last_control_chunk_from) {
4393 asoc->last_control_chunk_from = NULL;
4395 if (net == stcb->asoc.alternate) {
4396 sctp_free_remote_addr(stcb->asoc.alternate);
4397 stcb->asoc.alternate = NULL;
4399 sctp_free_remote_addr(net);
4403 * remove a remote endpoint address from an association, it will fail if the
4404 * address does not exist.
4407 sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
4410 * Here we need to remove a remote address. This is quite simple, we
4411 * first find it in the list of address for the association
4412 * (tasoc->asoc.nets) and then if it is there, we do a LIST_REMOVE
4413 * on that item. Note we do not allow it to be removed if there are
4414 * no other addresses.
4416 struct sctp_association *asoc;
4417 struct sctp_nets *net, *nnet;
4421 /* locate the address */
4422 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
4423 if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) {
4426 if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr,
4428 /* we found the guy */
4429 if (asoc->numnets < 2) {
4430 /* Must have at LEAST two remote addresses */
4433 sctp_remove_net(stcb, net);
4443 sctp_delete_from_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4445 struct sctpvtaghead *chain;
4446 struct sctp_tagblock *twait_block;
4450 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4451 if (!LIST_EMPTY(chain)) {
4452 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4453 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4454 if ((twait_block->vtag_block[i].v_tag == tag) &&
4455 (twait_block->vtag_block[i].lport == lport) &&
4456 (twait_block->vtag_block[i].rport == rport)) {
4457 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4458 twait_block->vtag_block[i].v_tag = 0;
4459 twait_block->vtag_block[i].lport = 0;
4460 twait_block->vtag_block[i].rport = 0;
4472 sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4474 struct sctpvtaghead *chain;
4475 struct sctp_tagblock *twait_block;
4479 SCTP_INP_INFO_WLOCK();
4480 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4481 if (!LIST_EMPTY(chain)) {
4482 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4483 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4484 if ((twait_block->vtag_block[i].v_tag == tag) &&
4485 (twait_block->vtag_block[i].lport == lport) &&
4486 (twait_block->vtag_block[i].rport == rport)) {
4495 SCTP_INP_INFO_WUNLOCK();
4501 sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport)
4503 struct sctpvtaghead *chain;
4504 struct sctp_tagblock *twait_block;
4512 (void)SCTP_GETTIME_TIMEVAL(&now);
4513 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4515 if (!LIST_EMPTY(chain)) {
4516 /* Block(s) present, lets find space, and expire on the fly */
4517 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4518 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4519 if ((twait_block->vtag_block[i].v_tag == 0) &&
4521 twait_block->vtag_block[i].tv_sec_at_expire =
4523 twait_block->vtag_block[i].v_tag = tag;
4524 twait_block->vtag_block[i].lport = lport;
4525 twait_block->vtag_block[i].rport = rport;
4527 } else if ((twait_block->vtag_block[i].v_tag) &&
4528 ((long)twait_block->vtag_block[i].tv_sec_at_expire < now.tv_sec)) {
4529 /* Audit expires this guy */
4530 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4531 twait_block->vtag_block[i].v_tag = 0;
4532 twait_block->vtag_block[i].lport = 0;
4533 twait_block->vtag_block[i].rport = 0;
4535 /* Reuse it for my new tag */
4536 twait_block->vtag_block[i].tv_sec_at_expire = now.tv_sec + time;
4537 twait_block->vtag_block[i].v_tag = tag;
4538 twait_block->vtag_block[i].lport = lport;
4539 twait_block->vtag_block[i].rport = rport;
4546 * We only do up to the block where we can
4547 * place our tag for audits
4553 /* Need to add a new block to chain */
4555 SCTP_MALLOC(twait_block, struct sctp_tagblock *,
4556 sizeof(struct sctp_tagblock), SCTP_M_TIMW);
4557 if (twait_block == NULL) {
4559 panic("Can not alloc tagblock");
4563 memset(twait_block, 0, sizeof(struct sctp_tagblock));
4564 LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock);
4565 twait_block->vtag_block[0].tv_sec_at_expire = now.tv_sec + time;
4566 twait_block->vtag_block[0].v_tag = tag;
4567 twait_block->vtag_block[0].lport = lport;
4568 twait_block->vtag_block[0].rport = rport;
4575 * Free the association after un-hashing the remote port. This
4576 * function ALWAYS returns holding NO LOCK on the stcb. It DOES
4577 * expect that the input to this function IS a locked TCB.
4578 * It will return 0, if it did NOT destroy the association (instead
4579 * it unlocks it. It will return NON-zero if it either destroyed the
4580 * association OR the association is already destroyed.
4583 sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
4586 struct sctp_association *asoc;
4587 struct sctp_nets *net, *nnet;
4588 struct sctp_laddr *laddr, *naddr;
4589 struct sctp_tmit_chunk *chk, *nchk;
4590 struct sctp_asconf_addr *aparam, *naparam;
4591 struct sctp_asconf_ack *aack, *naack;
4592 struct sctp_stream_reset_list *strrst, *nstrrst;
4593 struct sctp_queued_to_read *sq, *nsq;
4594 struct sctp_stream_queue_pending *sp, *nsp;
4595 sctp_sharedkey_t *shared_key, *nshared_key;
4598 /* first, lets purge the entry from the hash table. */
4600 #ifdef SCTP_LOG_CLOSING
4601 sctp_log_closing(inp, stcb, 6);
4603 if (stcb->asoc.state == 0) {
4604 #ifdef SCTP_LOG_CLOSING
4605 sctp_log_closing(inp, NULL, 7);
4607 /* there is no asoc, really TSNH :-0 */
4610 if (stcb->asoc.alternate) {
4611 sctp_free_remote_addr(stcb->asoc.alternate);
4612 stcb->asoc.alternate = NULL;
4615 if (stcb->freed_from_where == 0) {
4616 /* Only record the first place free happened from */
4617 stcb->freed_from_where = from_location;
4622 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4623 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4624 /* nothing around */
4627 so = inp->sctp_socket;
4630 * We used timer based freeing if a reader or writer is in the way.
4631 * So we first check if we are actually being called from a timer,
4632 * if so we abort early if a reader or writer is still in the way.
4634 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
4635 (from_inpcbfree == SCTP_NORMAL_PROC)) {
4637 * is it the timer driving us? if so are the reader/writers
4640 if (stcb->asoc.refcnt) {
4641 /* nope, reader or writer in the way */
4642 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4643 /* no asoc destroyed */
4644 SCTP_TCB_UNLOCK(stcb);
4645 #ifdef SCTP_LOG_CLOSING
4646 sctp_log_closing(inp, stcb, 8);
4651 /* now clean up any other timers */
4652 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4653 asoc->dack_timer.self = NULL;
4654 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4656 * For stream reset we don't blast this unless
4657 * it is a str-reset timer, it might be the
4658 * free-asoc timer which we DON'T want to
4661 if (asoc->strreset_timer.type == SCTP_TIMER_TYPE_STRRESET)
4662 asoc->strreset_timer.self = NULL;
4663 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4664 asoc->asconf_timer.self = NULL;
4665 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4666 asoc->autoclose_timer.self = NULL;
4667 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4668 asoc->shut_guard_timer.self = NULL;
4669 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4670 asoc->delayed_event_timer.self = NULL;
4671 /* Mobility adaptation */
4672 (void)SCTP_OS_TIMER_STOP(&asoc->delete_prim_timer.timer);
4673 asoc->delete_prim_timer.self = NULL;
4674 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4675 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4676 net->rxt_timer.self = NULL;
4677 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4678 net->pmtu_timer.self = NULL;
4679 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4680 net->hb_timer.self = NULL;
4682 /* Now the read queue needs to be cleaned up (only once) */
4683 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) {
4684 stcb->asoc.state |= SCTP_STATE_ABOUT_TO_BE_FREED;
4685 SCTP_INP_READ_LOCK(inp);
4686 TAILQ_FOREACH(sq, &inp->read_queue, next) {
4687 if (sq->stcb == stcb) {
4688 sq->do_not_ref_stcb = 1;
4689 sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
4691 * If there is no end, there never will be
4694 if (sq->end_added == 0) {
4695 /* Held for PD-API clear that. */
4696 sq->pdapi_aborted = 1;
4697 sq->held_length = 0;
4698 if (sctp_stcb_is_feature_on(inp, stcb, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) {
4700 * Need to add a PD-API
4701 * aborted indication.
4702 * Setting the control_pdapi
4703 * assures that it will be
4704 * added right after this
4709 stcb->asoc.control_pdapi = sq;
4710 strseq = (sq->sinfo_stream << 16) | sq->sinfo_ssn;
4711 sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION,
4713 SCTP_PARTIAL_DELIVERY_ABORTED,
4716 stcb->asoc.control_pdapi = NULL;
4719 /* Add an end to wake them */
4723 SCTP_INP_READ_UNLOCK(inp);
4724 if (stcb->block_entry) {
4725 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET);
4726 stcb->block_entry->error = ECONNRESET;
4727 stcb->block_entry = NULL;
4730 if ((stcb->asoc.refcnt) || (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE)) {
4732 * Someone holds a reference OR the socket is unaccepted
4735 if ((stcb->asoc.refcnt) ||
4736 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4737 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4738 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4739 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4741 SCTP_TCB_UNLOCK(stcb);
4742 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4743 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4744 /* nothing around */
4747 /* Wake any reader/writers */
4748 sctp_sorwakeup(inp, so);
4749 sctp_sowwakeup(inp, so);
4751 #ifdef SCTP_LOG_CLOSING
4752 sctp_log_closing(inp, stcb, 9);
4754 /* no asoc destroyed */
4757 #ifdef SCTP_LOG_CLOSING
4758 sctp_log_closing(inp, stcb, 10);
4761 * When I reach here, no others want to kill the assoc yet.. and I
4762 * own the lock. Now its possible an abort comes in when I do the
4763 * lock exchange below to grab all the locks to do the final take
4764 * out. to prevent this we increment the count, which will start a
4765 * timer and blow out above thus assuring us that we hold exclusive
4766 * killing of the asoc. Note that after getting back the TCB lock we
4767 * will go ahead and increment the counter back up and stop any
4768 * timer a passing stranger may have started :-S
4770 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4771 atomic_add_int(&stcb->asoc.refcnt, 1);
4773 SCTP_TCB_UNLOCK(stcb);
4774 SCTP_INP_INFO_WLOCK();
4775 SCTP_INP_WLOCK(inp);
4776 SCTP_TCB_LOCK(stcb);
4778 /* Double check the GONE flag */
4779 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4780 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4781 /* nothing around */
4784 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
4785 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4787 * For TCP type we need special handling when we are
4788 * connected. We also include the peel'ed off ones to.
4790 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4791 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED;
4792 inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED;
4795 if (so->so_rcv.sb_cc == 0) {
4796 so->so_state &= ~(SS_ISCONNECTING |
4797 SS_ISDISCONNECTING |
4801 socantrcvmore_locked(so);
4802 sctp_sowwakeup(inp, so);
4803 sctp_sorwakeup(inp, so);
4809 * Make it invalid too, that way if its about to run it will abort
4812 /* re-increment the lock */
4813 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4814 atomic_add_int(&stcb->asoc.refcnt, -1);
4816 if (stcb->asoc.refcnt) {
4817 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4818 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4819 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4820 SCTP_INP_INFO_WUNLOCK();
4821 SCTP_INP_WUNLOCK(inp);
4823 SCTP_TCB_UNLOCK(stcb);
4827 if (inp->sctp_tcbhash) {
4828 LIST_REMOVE(stcb, sctp_tcbhash);
4830 if (stcb->asoc.in_asocid_hash) {
4831 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4833 /* Now lets remove it from the list of ALL associations in the EP */
4834 LIST_REMOVE(stcb, sctp_tcblist);
4835 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4836 SCTP_INP_INCR_REF(inp);
4837 SCTP_INP_WUNLOCK(inp);
4839 /* pull from vtag hash */
4840 LIST_REMOVE(stcb, sctp_asocs);
4841 sctp_add_vtag_to_timewait(asoc->my_vtag, SCTP_BASE_SYSCTL(sctp_vtag_time_wait),
4842 inp->sctp_lport, stcb->rport);
4845 * Now restop the timers to be sure this is paranoia at is finest!
4847 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4848 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4849 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4850 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4851 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4852 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4853 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4854 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4855 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4856 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4857 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4860 asoc->strreset_timer.type = SCTP_TIMER_TYPE_NONE;
4862 * The chunk lists and such SHOULD be empty but we check them just
4865 /* anything on the wheel needs to be removed */
4866 for (i = 0; i < asoc->streamoutcnt; i++) {
4867 struct sctp_stream_out *outs;
4869 outs = &asoc->strmout[i];
4870 /* now clean up any chunks here */
4871 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
4872 TAILQ_REMOVE(&outs->outqueue, sp, next);
4873 sctp_free_spbufspace(stcb, asoc, sp);
4876 /* Still an open socket - report */
4877 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
4878 0, (void *)sp, SCTP_SO_LOCKED);
4881 sctp_m_freem(sp->data);
4883 sp->tail_mbuf = NULL;
4888 sctp_free_remote_addr(sp->net);
4891 sctp_free_a_strmoq(stcb, sp, SCTP_SO_LOCKED);
4894 /* sa_ignore FREED_MEMORY */
4895 TAILQ_FOREACH_SAFE(strrst, &asoc->resetHead, next_resp, nstrrst) {
4896 TAILQ_REMOVE(&asoc->resetHead, strrst, next_resp);
4897 SCTP_FREE(strrst, SCTP_M_STRESET);
4899 TAILQ_FOREACH_SAFE(sq, &asoc->pending_reply_queue, next, nsq) {
4900 TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
4902 sctp_m_freem(sq->data);
4905 sctp_free_remote_addr(sq->whoFrom);
4908 /* Free the ctl entry */
4909 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
4910 SCTP_DECR_READQ_COUNT();
4911 /* sa_ignore FREED_MEMORY */
4913 TAILQ_FOREACH_SAFE(chk, &asoc->free_chunks, sctp_next, nchk) {
4914 TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next);
4916 sctp_m_freem(chk->data);
4919 if (chk->holds_key_ref)
4920 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4921 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4922 SCTP_DECR_CHK_COUNT();
4923 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1);
4924 asoc->free_chunk_cnt--;
4925 /* sa_ignore FREED_MEMORY */
4927 /* pending send queue SHOULD be empty */
4928 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
4929 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
4930 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
4933 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
4936 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
4939 /* Still a socket? */
4940 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
4941 0, chk, SCTP_SO_LOCKED);
4944 sctp_m_freem(chk->data);
4948 if (chk->holds_key_ref)
4949 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4951 sctp_free_remote_addr(chk->whoTo);
4954 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4955 SCTP_DECR_CHK_COUNT();
4956 /* sa_ignore FREED_MEMORY */
4958 /* sent queue SHOULD be empty */
4959 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
4960 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
4961 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
4962 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
4965 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
4969 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
4972 /* Still a socket? */
4973 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
4974 0, chk, SCTP_SO_LOCKED);
4977 sctp_m_freem(chk->data);
4981 if (chk->holds_key_ref)
4982 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4983 sctp_free_remote_addr(chk->whoTo);
4984 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4985 SCTP_DECR_CHK_COUNT();
4986 /* sa_ignore FREED_MEMORY */
4989 for (i = 0; i < stcb->asoc.streamoutcnt; i++) {
4990 if (stcb->asoc.strmout[i].chunks_on_queues > 0) {
4991 panic("%u chunks left for stream %u.", stcb->asoc.strmout[i].chunks_on_queues, i);
4995 /* control queue MAY not be empty */
4996 TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) {
4997 TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next);
4999 sctp_m_freem(chk->data);
5002 if (chk->holds_key_ref)
5003 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5004 sctp_free_remote_addr(chk->whoTo);
5005 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5006 SCTP_DECR_CHK_COUNT();
5007 /* sa_ignore FREED_MEMORY */
5009 /* ASCONF queue MAY not be empty */
5010 TAILQ_FOREACH_SAFE(chk, &asoc->asconf_send_queue, sctp_next, nchk) {
5011 TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next);
5013 sctp_m_freem(chk->data);
5016 if (chk->holds_key_ref)
5017 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5018 sctp_free_remote_addr(chk->whoTo);
5019 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5020 SCTP_DECR_CHK_COUNT();
5021 /* sa_ignore FREED_MEMORY */
5023 TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) {
5024 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
5026 sctp_m_freem(chk->data);
5029 if (chk->holds_key_ref)
5030 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5031 sctp_free_remote_addr(chk->whoTo);
5032 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5033 SCTP_DECR_CHK_COUNT();
5034 /* sa_ignore FREED_MEMORY */
5037 if (asoc->mapping_array) {
5038 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
5039 asoc->mapping_array = NULL;
5041 if (asoc->nr_mapping_array) {
5042 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
5043 asoc->nr_mapping_array = NULL;
5045 /* the stream outs */
5046 if (asoc->strmout) {
5047 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
5048 asoc->strmout = NULL;
5050 asoc->strm_realoutsize = asoc->streamoutcnt = 0;
5052 struct sctp_queued_to_read *ctl, *nctl;
5054 for (i = 0; i < asoc->streamincnt; i++) {
5055 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[i].inqueue, next, nctl) {
5056 TAILQ_REMOVE(&asoc->strmin[i].inqueue, ctl, next);
5057 sctp_free_remote_addr(ctl->whoFrom);
5059 sctp_m_freem(ctl->data);
5063 * We don't free the address here since all
5064 * the net's were freed above.
5066 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
5067 SCTP_DECR_READQ_COUNT();
5070 SCTP_FREE(asoc->strmin, SCTP_M_STRMI);
5071 asoc->strmin = NULL;
5073 asoc->streamincnt = 0;
5074 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
5076 if (SCTP_BASE_INFO(ipi_count_raddr) == 0) {
5077 panic("no net's left alloc'ed, or list points to itself");
5080 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
5081 sctp_free_remote_addr(net);
5083 LIST_FOREACH_SAFE(laddr, &asoc->sctp_restricted_addrs, sctp_nxt_addr, naddr) {
5084 /* sa_ignore FREED_MEMORY */
5085 sctp_remove_laddr(laddr);
5088 /* pending asconf (address) parameters */
5089 TAILQ_FOREACH_SAFE(aparam, &asoc->asconf_queue, next, naparam) {
5090 /* sa_ignore FREED_MEMORY */
5091 TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
5092 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
5094 TAILQ_FOREACH_SAFE(aack, &asoc->asconf_ack_sent, next, naack) {
5095 /* sa_ignore FREED_MEMORY */
5096 TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
5097 if (aack->data != NULL) {
5098 sctp_m_freem(aack->data);
5100 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
5102 /* clean up auth stuff */
5103 if (asoc->local_hmacs)
5104 sctp_free_hmaclist(asoc->local_hmacs);
5105 if (asoc->peer_hmacs)
5106 sctp_free_hmaclist(asoc->peer_hmacs);
5108 if (asoc->local_auth_chunks)
5109 sctp_free_chunklist(asoc->local_auth_chunks);
5110 if (asoc->peer_auth_chunks)
5111 sctp_free_chunklist(asoc->peer_auth_chunks);
5113 sctp_free_authinfo(&asoc->authinfo);
5115 LIST_FOREACH_SAFE(shared_key, &asoc->shared_keys, next, nshared_key) {
5116 LIST_REMOVE(shared_key, next);
5117 sctp_free_sharedkey(shared_key);
5118 /* sa_ignore FREED_MEMORY */
5121 /* Insert new items here :> */
5123 /* Get rid of LOCK */
5124 SCTP_TCB_LOCK_DESTROY(stcb);
5125 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
5126 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5127 SCTP_INP_INFO_WUNLOCK();
5128 SCTP_INP_RLOCK(inp);
5130 #ifdef SCTP_TRACK_FREED_ASOCS
5131 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5132 /* now clean up the tasoc itself */
5133 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5134 SCTP_DECR_ASOC_COUNT();
5136 LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist);
5139 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5140 SCTP_DECR_ASOC_COUNT();
5142 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5143 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5145 * If its NOT the inp_free calling us AND sctp_close
5146 * as been called, we call back...
5148 SCTP_INP_RUNLOCK(inp);
5150 * This will start the kill timer (if we are the
5151 * last one) since we hold an increment yet. But
5152 * this is the only safe way to do this since
5153 * otherwise if the socket closes at the same time
5154 * we are here we might collide in the cleanup.
5156 sctp_inpcb_free(inp,
5157 SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
5158 SCTP_CALLED_DIRECTLY_NOCMPSET);
5159 SCTP_INP_DECR_REF(inp);
5162 /* The socket is still open. */
5163 SCTP_INP_DECR_REF(inp);
5166 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5167 SCTP_INP_RUNLOCK(inp);
5170 /* destroyed the asoc */
5171 #ifdef SCTP_LOG_CLOSING
5172 sctp_log_closing(inp, NULL, 11);
5180 * determine if a destination is "reachable" based upon the addresses bound
5181 * to the current endpoint (e.g. only v4 or v6 currently bound)
5184 * FIX: if we allow assoc-level bindx(), then this needs to be fixed to use
5185 * assoc level v4/v6 flags, as the assoc *may* not have the same address
5186 * types bound as its endpoint
5189 sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
5191 struct sctp_inpcb *inp;
5195 * No locks here, the TCB, in all cases is already locked and an
5196 * assoc is up. There is either a INP lock by the caller applied (in
5197 * asconf case when deleting an address) or NOT in the HB case,
5198 * however if HB then the INP increment is up and the INP will not
5199 * be removed (on top of the fact that we have a TCB lock). So we
5200 * only want to read the sctp_flags, which is either bound-all or
5201 * not.. no protection needed since once an assoc is up you can't be
5202 * changing your binding.
5204 inp = stcb->sctp_ep;
5205 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5206 /* if bound all, destination is not restricted */
5208 * RRS: Question during lock work: Is this correct? If you
5209 * are bound-all you still might need to obey the V4--V6
5210 * flags??? IMO this bound-all stuff needs to be removed!
5214 /* NOTE: all "scope" checks are done when local addresses are added */
5215 switch (destaddr->sa_family) {
5218 answer = inp->ip_inp.inp.inp_vflag & INP_IPV6;
5223 answer = inp->ip_inp.inp.inp_vflag & INP_IPV4;
5227 /* invalid family, so it's unreachable */
5235 * update the inp_vflags on an endpoint
5238 sctp_update_ep_vflag(struct sctp_inpcb *inp)
5240 struct sctp_laddr *laddr;
5242 /* first clear the flag */
5243 inp->ip_inp.inp.inp_vflag = 0;
5244 /* set the flag based on addresses on the ep list */
5245 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5246 if (laddr->ifa == NULL) {
5247 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
5251 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
5254 switch (laddr->ifa->address.sa.sa_family) {
5257 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5262 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5272 * Add the address to the endpoint local address list There is nothing to be
5273 * done if we are bound to all addresses
5276 sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
5278 struct sctp_laddr *laddr;
5283 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5284 /* You are already bound to all. You have it already */
5288 if (ifa->address.sa.sa_family == AF_INET6) {
5289 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5290 /* Can't bind a non-useable addr. */
5295 /* first, is it already present? */
5296 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5297 if (laddr->ifa == ifa) {
5304 /* Not in the ep list */
5305 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action);
5309 /* update inp_vflag flags */
5310 switch (ifa->address.sa.sa_family) {
5313 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5318 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5330 * select a new (hopefully reachable) destination net (should only be used
5331 * when we deleted an ep addr that is the only usable source address to reach
5332 * the destination net)
5335 sctp_select_primary_destination(struct sctp_tcb *stcb)
5337 struct sctp_nets *net;
5339 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5340 /* for now, we'll just pick the first reachable one we find */
5341 if (net->dest_state & SCTP_ADDR_UNCONFIRMED)
5343 if (sctp_destination_is_reachable(stcb,
5344 (struct sockaddr *)&net->ro._l_addr)) {
5345 /* found a reachable destination */
5346 stcb->asoc.primary_destination = net;
5349 /* I can't there from here! ...we're gonna die shortly... */
5354 * Delete the address from the endpoint local address list There is nothing
5355 * to be done if we are bound to all addresses
5358 sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa)
5360 struct sctp_laddr *laddr;
5364 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5365 /* You are already bound to all. You have it already */
5368 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5369 if (laddr->ifa == ifa) {
5374 if (fnd && (inp->laddr_count < 2)) {
5375 /* can't delete unless there are at LEAST 2 addresses */
5380 * clean up any use of this address go through our
5381 * associations and clear any last_used_address that match
5382 * this one for each assoc, see if a new primary_destination
5385 struct sctp_tcb *stcb;
5387 /* clean up "next_addr_touse" */
5388 if (inp->next_addr_touse == laddr)
5389 /* delete this address */
5390 inp->next_addr_touse = NULL;
5392 /* clean up "last_used_address" */
5393 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5394 struct sctp_nets *net;
5396 SCTP_TCB_LOCK(stcb);
5397 if (stcb->asoc.last_used_address == laddr)
5398 /* delete this address */
5399 stcb->asoc.last_used_address = NULL;
5401 * Now spin through all the nets and purge any ref
5404 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5405 if (net->ro._s_addr &&
5406 (net->ro._s_addr->ifa == laddr->ifa)) {
5407 /* Yep, purge src address selected */
5410 /* delete this address if cached */
5414 net->ro.ro_rt = NULL;
5416 sctp_free_ifa(net->ro._s_addr);
5417 net->ro._s_addr = NULL;
5418 net->src_addr_selected = 0;
5421 SCTP_TCB_UNLOCK(stcb);
5422 } /* for each tcb */
5423 /* remove it from the ep list */
5424 sctp_remove_laddr(laddr);
5426 /* update inp_vflag flags */
5427 sctp_update_ep_vflag(inp);
5433 * Add the address to the TCB local address restricted list.
5434 * This is a "pending" address list (eg. addresses waiting for an
5435 * ASCONF-ACK response) and cannot be used as a valid source address.
5438 sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5440 struct sctp_laddr *laddr;
5441 struct sctpladdr *list;
5444 * Assumes TCB is locked.. and possibly the INP. May need to
5445 * confirm/fix that if we need it and is not the case.
5447 list = &stcb->asoc.sctp_restricted_addrs;
5450 if (ifa->address.sa.sa_family == AF_INET6) {
5451 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5452 /* Can't bind a non-existent addr. */
5457 /* does the address already exist? */
5458 LIST_FOREACH(laddr, list, sctp_nxt_addr) {
5459 if (laddr->ifa == ifa) {
5464 /* add to the list */
5465 (void)sctp_insert_laddr(list, ifa, 0);
5470 * insert an laddr entry with the given ifa for the desired list
5473 sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
5475 struct sctp_laddr *laddr;
5477 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
5478 if (laddr == NULL) {
5479 /* out of memory? */
5480 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
5483 SCTP_INCR_LADDR_COUNT();
5484 bzero(laddr, sizeof(*laddr));
5485 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
5487 laddr->action = act;
5488 atomic_add_int(&ifa->refcount, 1);
5490 LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr);
5496 * Remove an laddr entry from the local address list (on an assoc)
5499 sctp_remove_laddr(struct sctp_laddr *laddr)
5502 /* remove from the list */
5503 LIST_REMOVE(laddr, sctp_nxt_addr);
5504 sctp_free_ifa(laddr->ifa);
5505 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr);
5506 SCTP_DECR_LADDR_COUNT();
5510 * Remove a local address from the TCB local address restricted list
5513 sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5515 struct sctp_inpcb *inp;
5516 struct sctp_laddr *laddr;
5519 * This is called by asconf work. It is assumed that a) The TCB is
5520 * locked and b) The INP is locked. This is true in as much as I can
5521 * trace through the entry asconf code where I did these locks.
5522 * Again, the ASCONF code is a bit different in that it does lock
5523 * the INP during its work often times. This must be since we don't
5524 * want other proc's looking up things while what they are looking
5525 * up is changing :-D
5528 inp = stcb->sctp_ep;
5529 /* if subset bound and don't allow ASCONF's, can't delete last */
5530 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
5531 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
5532 if (stcb->sctp_ep->laddr_count < 2) {
5533 /* can't delete last address */
5537 LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
5538 /* remove the address if it exists */
5539 if (laddr->ifa == NULL)
5541 if (laddr->ifa == ifa) {
5542 sctp_remove_laddr(laddr);
5547 /* address not found! */
5552 * Temporarily remove for __APPLE__ until we use the Tiger equivalents
5555 static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;
5556 static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR;
5560 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5561 struct sctp_mcore_ctrl *sctp_mcore_workers = NULL;
5562 int *sctp_cpuarry = NULL;
5564 sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use)
5566 /* Queue a packet to a processor for the specified core */
5567 struct sctp_mcore_queue *qent;
5568 struct sctp_mcore_ctrl *wkq;
5571 if (sctp_mcore_workers == NULL) {
5572 /* Something went way bad during setup */
5573 sctp_input_with_port(m, off, 0);
5576 SCTP_MALLOC(qent, struct sctp_mcore_queue *,
5577 (sizeof(struct sctp_mcore_queue)),
5580 /* This is trouble */
5581 sctp_input_with_port(m, off, 0);
5588 wkq = &sctp_mcore_workers[cpu_to_use];
5589 SCTP_MCORE_QLOCK(wkq);
5591 TAILQ_INSERT_TAIL(&wkq->que, qent, next);
5592 if (wkq->running == 0) {
5595 SCTP_MCORE_QUNLOCK(wkq);
5597 wakeup(&wkq->running);
5602 sctp_mcore_thread(void *arg)
5605 struct sctp_mcore_ctrl *wkq;
5606 struct sctp_mcore_queue *qent;
5608 wkq = (struct sctp_mcore_ctrl *)arg;
5612 /* Wait for first tickle */
5613 SCTP_MCORE_LOCK(wkq);
5615 msleep(&wkq->running,
5617 0, "wait for pkt", 0);
5618 SCTP_MCORE_UNLOCK(wkq);
5620 /* Bind to our cpu */
5621 thread_lock(curthread);
5622 sched_bind(curthread, wkq->cpuid);
5623 thread_unlock(curthread);
5625 /* Now lets start working */
5626 SCTP_MCORE_LOCK(wkq);
5627 /* Now grab lock and go */
5629 SCTP_MCORE_QLOCK(wkq);
5632 qent = TAILQ_FIRST(&wkq->que);
5634 TAILQ_REMOVE(&wkq->que, qent, next);
5635 SCTP_MCORE_QUNLOCK(wkq);
5636 CURVNET_SET(qent->vn);
5640 SCTP_FREE(qent, SCTP_M_MCORE);
5642 sctp_input_with_port(m, off, 0);
5644 SCTP_PRINTF("V6 not yet supported\n");
5648 SCTP_MCORE_QLOCK(wkq);
5651 if (!TAILQ_EMPTY(&wkq->que)) {
5654 SCTP_MCORE_QUNLOCK(wkq);
5655 msleep(&wkq->running,
5657 0, "wait for pkt", 0);
5662 sctp_startup_mcore_threads(void)
5669 if (sctp_mcore_workers != NULL) {
5671 * Already been here in some previous vnet?
5675 SCTP_MALLOC(sctp_mcore_workers, struct sctp_mcore_ctrl *,
5676 ((mp_maxid + 1) * sizeof(struct sctp_mcore_ctrl)),
5678 if (sctp_mcore_workers == NULL) {
5682 memset(sctp_mcore_workers, 0, ((mp_maxid + 1) *
5683 sizeof(struct sctp_mcore_ctrl)));
5684 /* Init the structures */
5685 for (i = 0; i <= mp_maxid; i++) {
5686 TAILQ_INIT(&sctp_mcore_workers[i].que);
5687 SCTP_MCORE_LOCK_INIT(&sctp_mcore_workers[i]);
5688 SCTP_MCORE_QLOCK_INIT(&sctp_mcore_workers[i]);
5689 sctp_mcore_workers[i].cpuid = i;
5691 if (sctp_cpuarry == NULL) {
5692 SCTP_MALLOC(sctp_cpuarry, int *,
5693 (mp_ncpus * sizeof(int)),
5697 sctp_cpuarry[i] = cpu;
5701 /* Now start them all */
5703 (void)kproc_create(sctp_mcore_thread,
5704 (void *)&sctp_mcore_workers[cpu],
5705 &sctp_mcore_workers[cpu].thread_proc,
5719 * SCTP initialization for the PCB structures should be called by
5720 * the sctp_init() funciton.
5725 if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) {
5726 /* error I was called twice */
5729 SCTP_BASE_VAR(sctp_pcb_initialized) = 1;
5731 #if defined(SCTP_LOCAL_TRACE_BUF)
5732 bzero(&SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));
5734 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5735 SCTP_MALLOC(SCTP_BASE_STATS, struct sctpstat *,
5736 ((mp_maxid + 1) * sizeof(struct sctpstat)),
5739 (void)SCTP_GETTIME_TIMEVAL(&tv);
5740 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5741 bzero(SCTP_BASE_STATS, (sizeof(struct sctpstat) * (mp_maxid + 1)));
5742 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t) tv.tv_sec;
5743 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t) tv.tv_usec;
5745 bzero(&SCTP_BASE_STATS, sizeof(struct sctpstat));
5746 SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t) tv.tv_sec;
5747 SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t) tv.tv_usec;
5749 /* init the empty list of (All) Endpoints */
5750 LIST_INIT(&SCTP_BASE_INFO(listhead));
5753 /* init the hash table of endpoints */
5754 TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize));
5755 TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize));
5756 TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale));
5757 SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31),
5758 &SCTP_BASE_INFO(hashasocmark));
5759 SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5760 &SCTP_BASE_INFO(hashmark));
5761 SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5762 &SCTP_BASE_INFO(hashtcpmark));
5763 SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize);
5766 SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH,
5767 &SCTP_BASE_INFO(hashvrfmark));
5769 SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE,
5770 &SCTP_BASE_INFO(vrf_ifn_hashmark));
5771 /* init the zones */
5773 * FIX ME: Should check for NULL returns, but if it does fail we are
5774 * doomed to panic anyways... add later maybe.
5776 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep",
5777 sizeof(struct sctp_inpcb), maxsockets);
5779 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc",
5780 sizeof(struct sctp_tcb), sctp_max_number_of_assoc);
5782 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr",
5783 sizeof(struct sctp_laddr),
5784 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5786 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr",
5787 sizeof(struct sctp_nets),
5788 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5790 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk",
5791 sizeof(struct sctp_tmit_chunk),
5792 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5794 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq",
5795 sizeof(struct sctp_queued_to_read),
5796 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5798 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out",
5799 sizeof(struct sctp_stream_queue_pending),
5800 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5802 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf",
5803 sizeof(struct sctp_asconf),
5804 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5806 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack",
5807 sizeof(struct sctp_asconf_ack),
5808 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5811 /* Master Lock INIT for info structure */
5812 SCTP_INP_INFO_LOCK_INIT();
5813 SCTP_STATLOG_INIT_LOCK();
5815 SCTP_IPI_COUNT_INIT();
5816 SCTP_IPI_ADDR_INIT();
5817 #ifdef SCTP_PACKET_LOGGING
5818 SCTP_IP_PKTLOG_INIT();
5820 LIST_INIT(&SCTP_BASE_INFO(addr_wq));
5822 SCTP_WQ_ADDR_INIT();
5823 /* not sure if we need all the counts */
5824 SCTP_BASE_INFO(ipi_count_ep) = 0;
5825 /* assoc/tcb zone info */
5826 SCTP_BASE_INFO(ipi_count_asoc) = 0;
5827 /* local addrlist zone info */
5828 SCTP_BASE_INFO(ipi_count_laddr) = 0;
5829 /* remote addrlist zone info */
5830 SCTP_BASE_INFO(ipi_count_raddr) = 0;
5832 SCTP_BASE_INFO(ipi_count_chunk) = 0;
5834 /* socket queue zone info */
5835 SCTP_BASE_INFO(ipi_count_readq) = 0;
5837 /* stream out queue cont */
5838 SCTP_BASE_INFO(ipi_count_strmoq) = 0;
5840 SCTP_BASE_INFO(ipi_free_strmoq) = 0;
5841 SCTP_BASE_INFO(ipi_free_chunks) = 0;
5843 SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer));
5845 /* Init the TIMEWAIT list */
5846 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5847 LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]);
5850 sctp_startup_iterator();
5852 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5853 sctp_startup_mcore_threads();
5857 * INIT the default VRF which for BSD is the only one, other O/S's
5858 * may have more. But initially they must start with one and then
5859 * add the VRF's as addresses are added.
5861 sctp_init_vrf_list(SCTP_DEFAULT_VRF);
5865 * Assumes that the SCTP_BASE_INFO() lock is NOT held.
5868 sctp_pcb_finish(void)
5870 struct sctp_vrflist *vrf_bucket;
5871 struct sctp_vrf *vrf, *nvrf;
5872 struct sctp_ifn *ifn, *nifn;
5873 struct sctp_ifa *ifa, *nifa;
5874 struct sctpvtaghead *chain;
5875 struct sctp_tagblock *twait_block, *prev_twait_block;
5876 struct sctp_laddr *wi, *nwi;
5880 * Free BSD the it thread never exits but we do clean up. The only
5881 * way freebsd reaches here if we have VRF's but we still add the
5882 * ifdef to make it compile on old versions.
5885 struct sctp_iterator *it, *nit;
5887 SCTP_IPI_ITERATOR_WQ_LOCK();
5888 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
5889 if (it->vn != curvnet) {
5892 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
5893 if (it->function_atend != NULL) {
5894 (*it->function_atend) (it->pointer, it->val);
5896 SCTP_FREE(it, SCTP_M_ITER);
5898 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5899 SCTP_ITERATOR_LOCK();
5900 if ((sctp_it_ctl.cur_it) &&
5901 (sctp_it_ctl.cur_it->vn == curvnet)) {
5902 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
5904 SCTP_ITERATOR_UNLOCK();
5907 SCTP_OS_TIMER_STOP(&SCTP_BASE_INFO(addr_wq_timer.timer));
5908 SCTP_WQ_ADDR_LOCK();
5909 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
5910 LIST_REMOVE(wi, sctp_nxt_addr);
5911 SCTP_DECR_LADDR_COUNT();
5912 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi);
5914 SCTP_WQ_ADDR_UNLOCK();
5917 * free the vrf/ifn/ifa lists and hashes (be sure address monitor is
5920 vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))];
5921 LIST_FOREACH_SAFE(vrf, vrf_bucket, next_vrf, nvrf) {
5922 LIST_FOREACH_SAFE(ifn, &vrf->ifnlist, next_ifn, nifn) {
5923 LIST_FOREACH_SAFE(ifa, &ifn->ifalist, next_ifa, nifa) {
5925 LIST_REMOVE(ifa, next_bucket);
5926 LIST_REMOVE(ifa, next_ifa);
5927 SCTP_FREE(ifa, SCTP_M_IFA);
5930 LIST_REMOVE(ifn, next_bucket);
5931 LIST_REMOVE(ifn, next_ifn);
5932 SCTP_FREE(ifn, SCTP_M_IFN);
5934 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
5936 LIST_REMOVE(vrf, next_vrf);
5937 SCTP_FREE(vrf, SCTP_M_VRF);
5939 /* free the vrf hashes */
5940 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark));
5941 SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark));
5944 * free the TIMEWAIT list elements malloc'd in the function
5945 * sctp_add_vtag_to_timewait()...
5947 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5948 chain = &SCTP_BASE_INFO(vtag_timewait)[i];
5949 if (!LIST_EMPTY(chain)) {
5950 prev_twait_block = NULL;
5951 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
5952 if (prev_twait_block) {
5953 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
5955 prev_twait_block = twait_block;
5957 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
5961 /* free the locks and mutexes */
5962 #ifdef SCTP_PACKET_LOGGING
5963 SCTP_IP_PKTLOG_DESTROY();
5965 SCTP_IPI_ADDR_DESTROY();
5966 SCTP_STATLOG_DESTROY();
5967 SCTP_INP_INFO_LOCK_DESTROY();
5969 SCTP_WQ_ADDR_DESTROY();
5971 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep));
5972 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc));
5973 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr));
5974 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net));
5975 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk));
5976 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq));
5977 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq));
5978 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf));
5979 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack));
5980 /* Get rid of other stuff to */
5981 if (SCTP_BASE_INFO(sctp_asochash) != NULL)
5982 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark));
5983 if (SCTP_BASE_INFO(sctp_ephash) != NULL)
5984 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark));
5985 if (SCTP_BASE_INFO(sctp_tcpephash) != NULL)
5986 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark));
5987 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5988 SCTP_FREE(SCTP_BASE_STATS, SCTP_M_MCORE);
5994 sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m,
5995 int offset, int limit,
5996 struct sockaddr *src, struct sockaddr *dst,
5997 struct sockaddr *altsa)
6000 * grub through the INIT pulling addresses and loading them to the
6001 * nets structure in the asoc. The from address in the mbuf should
6002 * also be loaded (if it is not already). This routine can be called
6003 * with either INIT or INIT-ACK's as long as the m points to the IP
6004 * packet and the offset points to the beginning of the parameters.
6006 struct sctp_inpcb *inp;
6007 struct sctp_nets *net, *nnet, *net_tmp;
6008 struct sctp_paramhdr *phdr, parm_buf;
6009 struct sctp_tcb *stcb_tmp;
6010 uint16_t ptype, plen;
6011 struct sockaddr *sa;
6012 uint8_t random_store[SCTP_PARAM_BUFFER_SIZE];
6013 struct sctp_auth_random *p_random = NULL;
6014 uint16_t random_len = 0;
6015 uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE];
6016 struct sctp_auth_hmac_algo *hmacs = NULL;
6017 uint16_t hmacs_len = 0;
6018 uint8_t saw_asconf = 0;
6019 uint8_t saw_asconf_ack = 0;
6020 uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE];
6021 struct sctp_auth_chunk_list *chunks = NULL;
6022 uint16_t num_chunks = 0;
6023 sctp_key_t *new_key;
6025 int got_random = 0, got_hmacs = 0, got_chklist = 0;
6026 uint8_t ecn_allowed;
6029 struct sockaddr_in sin;
6033 struct sockaddr_in6 sin6;
6037 /* First get the destination address setup too. */
6039 memset(&sin, 0, sizeof(sin));
6040 sin.sin_family = AF_INET;
6041 sin.sin_len = sizeof(sin);
6042 sin.sin_port = stcb->rport;
6045 memset(&sin6, 0, sizeof(sin6));
6046 sin6.sin6_family = AF_INET6;
6047 sin6.sin6_len = sizeof(struct sockaddr_in6);
6048 sin6.sin6_port = stcb->rport;
6055 /* Turn off ECN until we get through all params */
6057 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
6058 /* mark all addresses that we have currently on the list */
6059 net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC;
6061 /* does the source address already exist? if so skip it */
6062 inp = stcb->sctp_ep;
6063 atomic_add_int(&stcb->asoc.refcnt, 1);
6064 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, dst, stcb);
6065 atomic_add_int(&stcb->asoc.refcnt, -1);
6067 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) {
6068 /* we must add the source address */
6069 /* no scope set here since we have a tcb already. */
6070 switch (sa->sa_family) {
6073 if (stcb->asoc.ipv4_addr_legal) {
6074 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) {
6082 if (stcb->asoc.ipv6_addr_legal) {
6083 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
6093 if (net_tmp != NULL && stcb_tmp == stcb) {
6094 net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC;
6095 } else if (stcb_tmp != stcb) {
6096 /* It belongs to another association? */
6098 SCTP_TCB_UNLOCK(stcb_tmp);
6102 if (stcb->asoc.state == 0) {
6103 /* the assoc was freed? */
6107 * peer must explicitly turn this on. This may have been initialized
6108 * to be "on" in order to allow local addr changes while INIT's are
6111 stcb->asoc.peer_supports_asconf = 0;
6112 /* now we must go through each of the params. */
6113 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
6115 ptype = ntohs(phdr->param_type);
6116 plen = ntohs(phdr->param_length);
6118 * SCTP_PRINTF("ptype => %0x, plen => %d\n",
6119 * (uint32_t)ptype, (int)plen);
6121 if (offset + plen > limit) {
6128 if (ptype == SCTP_IPV4_ADDRESS) {
6129 if (stcb->asoc.ipv4_addr_legal) {
6130 struct sctp_ipv4addr_param *p4, p4_buf;
6132 /* ok get the v4 address and check/add */
6133 phdr = sctp_get_next_param(m, offset,
6134 (struct sctp_paramhdr *)&p4_buf,
6136 if (plen != sizeof(struct sctp_ipv4addr_param) ||
6140 p4 = (struct sctp_ipv4addr_param *)phdr;
6141 sin.sin_addr.s_addr = p4->addr;
6142 if (IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) {
6143 /* Skip multi-cast addresses */
6146 if ((sin.sin_addr.s_addr == INADDR_BROADCAST) ||
6147 (sin.sin_addr.s_addr == INADDR_ANY)) {
6150 sa = (struct sockaddr *)&sin;
6151 inp = stcb->sctp_ep;
6152 atomic_add_int(&stcb->asoc.refcnt, 1);
6153 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6155 atomic_add_int(&stcb->asoc.refcnt, -1);
6157 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) ||
6159 /* we must add the source address */
6161 * no scope set since we have a tcb
6166 * we must validate the state again
6170 if (stcb->asoc.state == 0) {
6171 /* the assoc was freed? */
6174 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) {
6177 } else if (stcb_tmp == stcb) {
6178 if (stcb->asoc.state == 0) {
6179 /* the assoc was freed? */
6185 ~SCTP_ADDR_NOT_IN_ASSOC;
6189 * strange, address is in another
6190 * assoc? straighten out locks.
6193 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6198 sctp_abort_an_association(stcb_tmp->sctp_ep,
6199 stcb_tmp, NULL, SCTP_SO_NOT_LOCKED);
6202 SCTP_TCB_UNLOCK(stcb_tmp);
6204 if (stcb->asoc.state == 0) {
6205 /* the assoc was freed? */
6214 if (ptype == SCTP_IPV6_ADDRESS) {
6215 if (stcb->asoc.ipv6_addr_legal) {
6216 /* ok get the v6 address and check/add */
6217 struct sctp_ipv6addr_param *p6, p6_buf;
6219 phdr = sctp_get_next_param(m, offset,
6220 (struct sctp_paramhdr *)&p6_buf,
6222 if (plen != sizeof(struct sctp_ipv6addr_param) ||
6226 p6 = (struct sctp_ipv6addr_param *)phdr;
6227 memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
6229 if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) {
6230 /* Skip multi-cast addresses */
6233 if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) {
6235 * Link local make no sense without
6240 sa = (struct sockaddr *)&sin6;
6241 inp = stcb->sctp_ep;
6242 atomic_add_int(&stcb->asoc.refcnt, 1);
6243 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6245 atomic_add_int(&stcb->asoc.refcnt, -1);
6246 if (stcb_tmp == NULL &&
6247 (inp == stcb->sctp_ep || inp == NULL)) {
6249 * we must validate the state again
6253 if (stcb->asoc.state == 0) {
6254 /* the assoc was freed? */
6258 * we must add the address, no scope
6261 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) {
6264 } else if (stcb_tmp == stcb) {
6266 * we must validate the state again
6269 if (stcb->asoc.state == 0) {
6270 /* the assoc was freed? */
6276 ~SCTP_ADDR_NOT_IN_ASSOC;
6280 * strange, address is in another
6281 * assoc? straighten out locks.
6284 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6289 sctp_abort_an_association(stcb_tmp->sctp_ep,
6290 stcb_tmp, NULL, SCTP_SO_NOT_LOCKED);
6293 SCTP_TCB_UNLOCK(stcb_tmp);
6295 if (stcb->asoc.state == 0) {
6296 /* the assoc was freed? */
6304 if (ptype == SCTP_ECN_CAPABLE) {
6306 } else if (ptype == SCTP_ULP_ADAPTATION) {
6307 if (stcb->asoc.state != SCTP_STATE_OPEN) {
6308 struct sctp_adaptation_layer_indication ai,
6311 phdr = sctp_get_next_param(m, offset,
6312 (struct sctp_paramhdr *)&ai, sizeof(ai));
6313 aip = (struct sctp_adaptation_layer_indication *)phdr;
6315 stcb->asoc.peers_adaptation = ntohl(aip->indication);
6316 stcb->asoc.adaptation_needed = 1;
6319 } else if (ptype == SCTP_SET_PRIM_ADDR) {
6320 struct sctp_asconf_addr_param lstore, *fee;
6322 struct sockaddr *lsa = NULL;
6325 struct sctp_asconf_addrv4_param *fii;
6329 stcb->asoc.peer_supports_asconf = 1;
6330 if (plen > sizeof(lstore)) {
6333 phdr = sctp_get_next_param(m, offset,
6334 (struct sctp_paramhdr *)&lstore,
6335 min(plen, sizeof(lstore)));
6339 fee = (struct sctp_asconf_addr_param *)phdr;
6340 lptype = ntohs(fee->addrp.ph.param_type);
6343 case SCTP_IPV4_ADDRESS:
6345 sizeof(struct sctp_asconf_addrv4_param)) {
6346 SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n",
6347 (int)sizeof(struct sctp_asconf_addrv4_param),
6350 fii = (struct sctp_asconf_addrv4_param *)fee;
6351 sin.sin_addr.s_addr = fii->addrp.addr;
6352 lsa = (struct sockaddr *)&sin;
6357 case SCTP_IPV6_ADDRESS:
6359 sizeof(struct sctp_asconf_addr_param)) {
6360 SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n",
6361 (int)sizeof(struct sctp_asconf_addr_param),
6364 memcpy(sin6.sin6_addr.s6_addr,
6366 sizeof(fee->addrp.addr));
6367 lsa = (struct sockaddr *)&sin6;
6375 (void)sctp_set_primary_addr(stcb, sa, NULL);
6377 } else if (ptype == SCTP_HAS_NAT_SUPPORT) {
6378 stcb->asoc.peer_supports_nat = 1;
6379 } else if (ptype == SCTP_PRSCTP_SUPPORTED) {
6380 /* Peer supports pr-sctp */
6381 stcb->asoc.peer_supports_prsctp = 1;
6382 } else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) {
6383 /* A supported extension chunk */
6384 struct sctp_supported_chunk_types_param *pr_supported;
6385 uint8_t local_store[SCTP_PARAM_BUFFER_SIZE];
6388 phdr = sctp_get_next_param(m, offset,
6389 (struct sctp_paramhdr *)&local_store, min(sizeof(local_store), plen));
6393 stcb->asoc.peer_supports_asconf = 0;
6394 stcb->asoc.peer_supports_prsctp = 0;
6395 stcb->asoc.peer_supports_pktdrop = 0;
6396 stcb->asoc.peer_supports_strreset = 0;
6397 stcb->asoc.peer_supports_nr_sack = 0;
6398 stcb->asoc.peer_supports_auth = 0;
6399 pr_supported = (struct sctp_supported_chunk_types_param *)phdr;
6400 num_ent = plen - sizeof(struct sctp_paramhdr);
6401 for (i = 0; i < num_ent; i++) {
6402 switch (pr_supported->chunk_types[i]) {
6404 case SCTP_ASCONF_ACK:
6405 stcb->asoc.peer_supports_asconf = 1;
6407 case SCTP_FORWARD_CUM_TSN:
6408 stcb->asoc.peer_supports_prsctp = 1;
6410 case SCTP_PACKET_DROPPED:
6411 stcb->asoc.peer_supports_pktdrop = 1;
6413 case SCTP_NR_SELECTIVE_ACK:
6414 stcb->asoc.peer_supports_nr_sack = 1;
6416 case SCTP_STREAM_RESET:
6417 stcb->asoc.peer_supports_strreset = 1;
6419 case SCTP_AUTHENTICATION:
6420 stcb->asoc.peer_supports_auth = 1;
6423 /* one I have not learned yet */
6428 } else if (ptype == SCTP_RANDOM) {
6429 if (plen > sizeof(random_store))
6432 /* already processed a RANDOM */
6435 phdr = sctp_get_next_param(m, offset,
6436 (struct sctp_paramhdr *)random_store,
6437 min(sizeof(random_store), plen));
6440 p_random = (struct sctp_auth_random *)phdr;
6441 random_len = plen - sizeof(*p_random);
6442 /* enforce the random length */
6443 if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) {
6444 SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n");
6448 } else if (ptype == SCTP_HMAC_LIST) {
6452 if (plen > sizeof(hmacs_store))
6455 /* already processed a HMAC list */
6458 phdr = sctp_get_next_param(m, offset,
6459 (struct sctp_paramhdr *)hmacs_store,
6460 min(plen, sizeof(hmacs_store)));
6463 hmacs = (struct sctp_auth_hmac_algo *)phdr;
6464 hmacs_len = plen - sizeof(*hmacs);
6465 num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]);
6466 /* validate the hmac list */
6467 if (sctp_verify_hmac_param(hmacs, num_hmacs)) {
6470 if (stcb->asoc.peer_hmacs != NULL)
6471 sctp_free_hmaclist(stcb->asoc.peer_hmacs);
6472 stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs);
6473 if (stcb->asoc.peer_hmacs != NULL) {
6474 for (i = 0; i < num_hmacs; i++) {
6475 (void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs,
6476 ntohs(hmacs->hmac_ids[i]));
6480 } else if (ptype == SCTP_CHUNK_LIST) {
6483 if (plen > sizeof(chunks_store))
6486 /* already processed a Chunks list */
6489 phdr = sctp_get_next_param(m, offset,
6490 (struct sctp_paramhdr *)chunks_store,
6491 min(plen, sizeof(chunks_store)));
6494 chunks = (struct sctp_auth_chunk_list *)phdr;
6495 num_chunks = plen - sizeof(*chunks);
6496 if (stcb->asoc.peer_auth_chunks != NULL)
6497 sctp_clear_chunklist(stcb->asoc.peer_auth_chunks);
6499 stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist();
6500 for (i = 0; i < num_chunks; i++) {
6501 (void)sctp_auth_add_chunk(chunks->chunk_types[i],
6502 stcb->asoc.peer_auth_chunks);
6503 /* record asconf/asconf-ack if listed */
6504 if (chunks->chunk_types[i] == SCTP_ASCONF)
6506 if (chunks->chunk_types[i] == SCTP_ASCONF_ACK)
6511 } else if ((ptype == SCTP_HEARTBEAT_INFO) ||
6512 (ptype == SCTP_STATE_COOKIE) ||
6513 (ptype == SCTP_UNRECOG_PARAM) ||
6514 (ptype == SCTP_COOKIE_PRESERVE) ||
6515 (ptype == SCTP_SUPPORTED_ADDRTYPE) ||
6516 (ptype == SCTP_ADD_IP_ADDRESS) ||
6517 (ptype == SCTP_DEL_IP_ADDRESS) ||
6518 (ptype == SCTP_ERROR_CAUSE_IND) ||
6519 (ptype == SCTP_SUCCESS_REPORT)) {
6522 if ((ptype & 0x8000) == 0x0000) {
6524 * must stop processing the rest of the
6525 * param's. Any report bits were handled
6527 * sctp_arethere_unrecognized_parameters()
6528 * when the INIT or INIT-ACK was first seen.
6535 offset += SCTP_SIZE32(plen);
6536 if (offset >= limit) {
6539 phdr = sctp_get_next_param(m, offset, &parm_buf,
6542 /* Now check to see if we need to purge any addresses */
6543 TAILQ_FOREACH_SAFE(net, &stcb->asoc.nets, sctp_next, nnet) {
6544 if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) ==
6545 SCTP_ADDR_NOT_IN_ASSOC) {
6546 /* This address has been removed from the asoc */
6547 /* remove and free it */
6548 stcb->asoc.numnets--;
6549 TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next);
6550 sctp_free_remote_addr(net);
6551 if (net == stcb->asoc.primary_destination) {
6552 stcb->asoc.primary_destination = NULL;
6553 sctp_select_primary_destination(stcb);
6557 if (ecn_allowed == 0) {
6558 stcb->asoc.ecn_allowed = 0;
6560 /* validate authentication required parameters */
6561 if (got_random && got_hmacs) {
6562 stcb->asoc.peer_supports_auth = 1;
6564 stcb->asoc.peer_supports_auth = 0;
6566 if (!stcb->asoc.peer_supports_auth && got_chklist) {
6567 /* peer does not support auth but sent a chunks list? */
6570 if (!SCTP_BASE_SYSCTL(sctp_asconf_auth_nochk) && stcb->asoc.peer_supports_asconf &&
6571 !stcb->asoc.peer_supports_auth) {
6572 /* peer supports asconf but not auth? */
6574 } else if ((stcb->asoc.peer_supports_asconf) && (stcb->asoc.peer_supports_auth) &&
6575 ((saw_asconf == 0) || (saw_asconf_ack == 0))) {
6578 /* concatenate the full random key */
6579 keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len;
6580 if (chunks != NULL) {
6581 keylen += sizeof(*chunks) + num_chunks;
6583 new_key = sctp_alloc_key(keylen);
6584 if (new_key != NULL) {
6585 /* copy in the RANDOM */
6586 if (p_random != NULL) {
6587 keylen = sizeof(*p_random) + random_len;
6588 bcopy(p_random, new_key->key, keylen);
6590 /* append in the AUTH chunks */
6591 if (chunks != NULL) {
6592 bcopy(chunks, new_key->key + keylen,
6593 sizeof(*chunks) + num_chunks);
6594 keylen += sizeof(*chunks) + num_chunks;
6596 /* append in the HMACs */
6597 if (hmacs != NULL) {
6598 bcopy(hmacs, new_key->key + keylen,
6599 sizeof(*hmacs) + hmacs_len);
6602 /* failed to get memory for the key */
6605 if (stcb->asoc.authinfo.peer_random != NULL)
6606 sctp_free_key(stcb->asoc.authinfo.peer_random);
6607 stcb->asoc.authinfo.peer_random = new_key;
6608 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid);
6609 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid);
6615 sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa,
6616 struct sctp_nets *net)
6618 /* make sure the requested primary address exists in the assoc */
6619 if (net == NULL && sa)
6620 net = sctp_findnet(stcb, sa);
6623 /* didn't find the requested primary address! */
6626 /* set the primary address */
6627 if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
6628 /* Must be confirmed, so queue to set */
6629 net->dest_state |= SCTP_ADDR_REQ_PRIMARY;
6632 stcb->asoc.primary_destination = net;
6633 if (!(net->dest_state & SCTP_ADDR_PF) && (stcb->asoc.alternate)) {
6634 sctp_free_remote_addr(stcb->asoc.alternate);
6635 stcb->asoc.alternate = NULL;
6637 net = TAILQ_FIRST(&stcb->asoc.nets);
6638 if (net != stcb->asoc.primary_destination) {
6640 * first one on the list is NOT the primary
6641 * sctp_cmpaddr() is much more efficient if the
6642 * primary is the first on the list, make it so.
6644 TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6645 TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6652 sctp_is_vtag_good(uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now)
6655 * This function serves two purposes. It will see if a TAG can be
6656 * re-used and return 1 for yes it is ok and 0 for don't use that
6657 * tag. A secondary function it will do is purge out old tags that
6660 struct sctpvtaghead *chain;
6661 struct sctp_tagblock *twait_block;
6662 struct sctpasochead *head;
6663 struct sctp_tcb *stcb;
6666 SCTP_INP_INFO_RLOCK();
6667 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag,
6668 SCTP_BASE_INFO(hashasocmark))];
6671 goto skip_vtag_check;
6673 LIST_FOREACH(stcb, head, sctp_asocs) {
6675 * We choose not to lock anything here. TCB's can't be
6676 * removed since we have the read lock, so they can't be
6677 * freed on us, same thing for the INP. I may be wrong with
6678 * this assumption, but we will go with it for now :-)
6680 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
6683 if (stcb->asoc.my_vtag == tag) {
6685 if (stcb->rport != rport) {
6688 if (stcb->sctp_ep->sctp_lport != lport) {
6691 /* Its a used tag set */
6692 SCTP_INP_INFO_RUNLOCK();
6698 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
6699 /* Now what about timed wait ? */
6700 if (!LIST_EMPTY(chain)) {
6702 * Block(s) are present, lets see if we have this tag in the
6705 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6706 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
6707 if (twait_block->vtag_block[i].v_tag == 0) {
6710 } else if ((long)twait_block->vtag_block[i].tv_sec_at_expire <
6712 /* Audit expires this guy */
6713 twait_block->vtag_block[i].tv_sec_at_expire = 0;
6714 twait_block->vtag_block[i].v_tag = 0;
6715 twait_block->vtag_block[i].lport = 0;
6716 twait_block->vtag_block[i].rport = 0;
6717 } else if ((twait_block->vtag_block[i].v_tag == tag) &&
6718 (twait_block->vtag_block[i].lport == lport) &&
6719 (twait_block->vtag_block[i].rport == rport)) {
6720 /* Bad tag, sorry :< */
6721 SCTP_INP_INFO_RUNLOCK();
6727 SCTP_INP_INFO_RUNLOCK();
6732 sctp_drain_mbufs(struct sctp_tcb *stcb)
6735 * We must hunt this association for MBUF's past the cumack (i.e.
6736 * out of order data that we can renege on).
6738 struct sctp_association *asoc;
6739 struct sctp_tmit_chunk *chk, *nchk;
6740 uint32_t cumulative_tsn_p1;
6741 struct sctp_queued_to_read *ctl, *nctl;
6746 /* We look for anything larger than the cum-ack + 1 */
6749 if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) {
6750 /* none we can reneg on. */
6753 SCTP_STAT_INCR(sctps_protocol_drains_done);
6754 cumulative_tsn_p1 = asoc->cumulative_tsn + 1;
6756 /* First look in the re-assembly queue */
6757 TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) {
6758 if (SCTP_TSN_GT(chk->rec.data.TSN_seq, cumulative_tsn_p1)) {
6759 /* Yep it is above cum-ack */
6761 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.TSN_seq, asoc->mapping_array_base_tsn);
6762 asoc->size_on_reasm_queue = sctp_sbspace_sub(asoc->size_on_reasm_queue, chk->send_size);
6763 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6764 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6765 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
6767 sctp_m_freem(chk->data);
6770 sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
6773 /* Ok that was fun, now we will drain all the inbound streams? */
6774 for (strmat = 0; strmat < asoc->streamincnt; strmat++) {
6775 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[strmat].inqueue, next, nctl) {
6776 if (SCTP_TSN_GT(ctl->sinfo_tsn, cumulative_tsn_p1)) {
6777 /* Yep it is above cum-ack */
6779 SCTP_CALC_TSN_TO_GAP(gap, ctl->sinfo_tsn, asoc->mapping_array_base_tsn);
6780 asoc->size_on_all_streams = sctp_sbspace_sub(asoc->size_on_all_streams, ctl->length);
6781 sctp_ucount_decr(asoc->cnt_on_all_streams);
6782 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6783 TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, ctl, next);
6785 sctp_m_freem(ctl->data);
6788 sctp_free_remote_addr(ctl->whoFrom);
6789 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
6790 SCTP_DECR_READQ_COUNT();
6795 /* We must back down to see what the new highest is */
6796 for (i = asoc->highest_tsn_inside_map; SCTP_TSN_GE(i, asoc->mapping_array_base_tsn); i--) {
6797 SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn);
6798 if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) {
6799 asoc->highest_tsn_inside_map = i;
6805 asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1;
6808 * Question, should we go through the delivery queue? The
6809 * only reason things are on here is the app not reading OR
6810 * a p-d-api up. An attacker COULD send enough in to
6811 * initiate the PD-API and then send a bunch of stuff to
6812 * other streams... these would wind up on the delivery
6813 * queue.. and then we would not get to them. But in order
6814 * to do this I then have to back-track and un-deliver
6815 * sequence numbers in streams.. el-yucko. I think for now
6816 * we will NOT look at the delivery queue and leave it to be
6817 * something to consider later. An alternative would be to
6818 * abort the P-D-API with a notification and then deliver
6819 * the data.... Or another method might be to keep track of
6820 * how many times the situation occurs and if we see a
6821 * possible attack underway just abort the association.
6824 SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt);
6827 * Now do we need to find a new
6828 * asoc->highest_tsn_inside_map?
6830 asoc->last_revoke_count = cnt;
6831 (void)SCTP_OS_TIMER_STOP(&stcb->asoc.dack_timer.timer);
6832 /* sa_ignore NO_NULL_CHK */
6833 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
6834 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED);
6837 * Another issue, in un-setting the TSN's in the mapping array we
6838 * DID NOT adjust the highest_tsn marker. This will cause one of
6839 * two things to occur. It may cause us to do extra work in checking
6840 * for our mapping array movement. More importantly it may cause us
6841 * to SACK every datagram. This may not be a bad thing though since
6842 * we will recover once we get our cum-ack above and all this stuff
6843 * we dumped recovered.
6851 * We must walk the PCB lists for ALL associations here. The system
6852 * is LOW on MBUF's and needs help. This is where reneging will
6853 * occur. We really hope this does NOT happen!
6855 VNET_ITERATOR_DECL(vnet_iter);
6856 VNET_LIST_RLOCK_NOSLEEP();
6857 VNET_FOREACH(vnet_iter) {
6858 CURVNET_SET(vnet_iter);
6859 struct sctp_inpcb *inp;
6860 struct sctp_tcb *stcb;
6862 SCTP_STAT_INCR(sctps_protocol_drain_calls);
6863 if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
6870 SCTP_INP_INFO_RLOCK();
6871 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
6872 /* For each endpoint */
6873 SCTP_INP_RLOCK(inp);
6874 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
6875 /* For each association */
6876 SCTP_TCB_LOCK(stcb);
6877 sctp_drain_mbufs(stcb);
6878 SCTP_TCB_UNLOCK(stcb);
6880 SCTP_INP_RUNLOCK(inp);
6882 SCTP_INP_INFO_RUNLOCK();
6885 VNET_LIST_RUNLOCK_NOSLEEP();
6889 * start a new iterator
6890 * iterates through all endpoints and associations based on the pcb_state
6891 * flags and asoc_state. "af" (mandatory) is executed for all matching
6892 * assocs and "ef" (optional) is executed when the iterator completes.
6893 * "inpf" (optional) is executed for each new endpoint as it is being
6894 * iterated through. inpe (optional) is called when the inp completes
6895 * its way through all the stcbs.
6898 sctp_initiate_iterator(inp_func inpf,
6902 uint32_t pcb_features,
6903 uint32_t asoc_state,
6907 struct sctp_inpcb *s_inp,
6908 uint8_t chunk_output_off)
6910 struct sctp_iterator *it = NULL;
6915 SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator),
6918 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
6921 memset(it, 0, sizeof(*it));
6922 it->function_assoc = af;
6923 it->function_inp = inpf;
6925 it->done_current_ep = 0;
6927 it->done_current_ep = 1;
6928 it->function_atend = ef;
6931 it->pcb_flags = pcb_state;
6932 it->pcb_features = pcb_features;
6933 it->asoc_state = asoc_state;
6934 it->function_inp_end = inpe;
6935 it->no_chunk_output = chunk_output_off;
6938 /* Assume lock is held here */
6940 SCTP_INP_INCR_REF(it->inp);
6941 it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP;
6943 SCTP_INP_INFO_RLOCK();
6944 it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead));
6946 SCTP_INP_INCR_REF(it->inp);
6948 SCTP_INP_INFO_RUNLOCK();
6949 it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP;
6952 SCTP_IPI_ITERATOR_WQ_LOCK();
6954 TAILQ_INSERT_TAIL(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
6955 if (sctp_it_ctl.iterator_running == 0) {
6956 sctp_wakeup_iterator();
6958 SCTP_IPI_ITERATOR_WQ_UNLOCK();
6959 /* sa_ignore MEMLEAK {memory is put on the tailq for the iterator} */