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);
97 SCTP_INP_INFO_RUNLOCK();
101 * Addresses are added to VRF's (Virtual Router's). For BSD we
102 * have only the default VRF 0. We maintain a hash list of
103 * VRF's. Each VRF has its own list of sctp_ifn's. Each of
104 * these has a list of addresses. When we add a new address
105 * to a VRF we lookup the ifn/ifn_index, if the ifn does
106 * not exist we create it and add it to the list of IFN's
107 * within the VRF. Once we have the sctp_ifn, we add the
108 * address to the list. So we look something like:
111 * vrf-> ifn-> ifn -> ifn
113 * ... +--ifa-> ifa -> ifa
116 * We keep these separate lists since the SCTP subsystem will
117 * point to these from its source address selection nets structure.
118 * When an address is deleted it does not happen right away on
119 * the SCTP side, it gets scheduled. What we do when a
120 * delete happens is immediately remove the address from
121 * the master list and decrement the refcount. As our
122 * addip iterator works through and frees the src address
123 * selection pointing to the sctp_ifa, eventually the refcount
124 * will reach 0 and we will delete it. Note that it is assumed
125 * that any locking on system level ifn/ifa is done at the
126 * caller of these functions and these routines will only
127 * lock the SCTP structures as they add or delete things.
129 * Other notes on VRF concepts.
130 * - An endpoint can be in multiple VRF's
131 * - An association lives within a VRF and only one VRF.
132 * - Any incoming packet we can deduce the VRF for by
133 * looking at the mbuf/pak inbound (for BSD its VRF=0 :D)
134 * - Any downward send call or connect call must supply the
135 * VRF via ancillary data or via some sort of set default
136 * VRF socket option call (again for BSD no brainer since
137 * the VRF is always 0).
138 * - An endpoint may add multiple VRF's to it.
139 * - Listening sockets can accept associations in any
140 * of the VRF's they are in but the assoc will end up
141 * in only one VRF (gotten from the packet or connect/send).
146 sctp_allocate_vrf(int vrf_id)
148 struct sctp_vrf *vrf = NULL;
149 struct sctp_vrflist *bucket;
151 /* First allocate the VRF structure */
152 vrf = sctp_find_vrf(vrf_id);
154 /* Already allocated */
157 SCTP_MALLOC(vrf, struct sctp_vrf *, sizeof(struct sctp_vrf),
162 panic("No memory for VRF:%d", vrf_id);
167 memset(vrf, 0, sizeof(struct sctp_vrf));
168 vrf->vrf_id = vrf_id;
169 LIST_INIT(&vrf->ifnlist);
170 vrf->total_ifa_count = 0;
172 /* now also setup table ids */
173 SCTP_INIT_VRF_TABLEID(vrf);
174 /* Init the HASH of addresses */
175 vrf->vrf_addr_hash = SCTP_HASH_INIT(SCTP_VRF_ADDR_HASH_SIZE,
176 &vrf->vrf_addr_hashmark);
177 if (vrf->vrf_addr_hash == NULL) {
180 panic("No memory for VRF:%d", vrf_id);
182 SCTP_FREE(vrf, SCTP_M_VRF);
185 /* Add it to the hash table */
186 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
187 LIST_INSERT_HEAD(bucket, vrf, next_vrf);
188 atomic_add_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
194 sctp_find_ifn(void *ifn, uint32_t ifn_index)
196 struct sctp_ifn *sctp_ifnp;
197 struct sctp_ifnlist *hash_ifn_head;
200 * We assume the lock is held for the addresses if that's wrong
201 * problems could occur :-)
203 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
204 LIST_FOREACH(sctp_ifnp, hash_ifn_head, next_bucket) {
205 if (sctp_ifnp->ifn_index == ifn_index) {
208 if (sctp_ifnp->ifn_p && ifn && (sctp_ifnp->ifn_p == ifn)) {
217 sctp_find_vrf(uint32_t vrf_id)
219 struct sctp_vrflist *bucket;
220 struct sctp_vrf *liste;
222 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
223 LIST_FOREACH(liste, bucket, next_vrf) {
224 if (vrf_id == liste->vrf_id) {
233 sctp_free_vrf(struct sctp_vrf *vrf)
235 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&vrf->refcount)) {
236 if (vrf->vrf_addr_hash) {
237 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
238 vrf->vrf_addr_hash = NULL;
240 /* We zero'd the count */
241 LIST_REMOVE(vrf, next_vrf);
242 SCTP_FREE(vrf, SCTP_M_VRF);
243 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);
263 sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu)
265 struct sctp_ifn *sctp_ifnp;
267 sctp_ifnp = sctp_find_ifn((void *)NULL, ifn_index);
268 if (sctp_ifnp != NULL) {
269 sctp_ifnp->ifn_mtu = mtu;
275 sctp_free_ifa(struct sctp_ifa *sctp_ifap)
277 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifap->refcount)) {
278 /* We zero'd the count */
279 if (sctp_ifap->ifn_p) {
280 sctp_free_ifn(sctp_ifap->ifn_p);
282 SCTP_FREE(sctp_ifap, SCTP_M_IFA);
283 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
289 sctp_delete_ifn(struct sctp_ifn *sctp_ifnp, int hold_addr_lock)
291 struct sctp_ifn *found;
293 found = sctp_find_ifn(sctp_ifnp->ifn_p, sctp_ifnp->ifn_index);
295 /* Not in the list.. sorry */
298 if (hold_addr_lock == 0)
299 SCTP_IPI_ADDR_WLOCK();
300 LIST_REMOVE(sctp_ifnp, next_bucket);
301 LIST_REMOVE(sctp_ifnp, next_ifn);
302 SCTP_DEREGISTER_INTERFACE(sctp_ifnp->ifn_index,
303 sctp_ifnp->registered_af);
304 if (hold_addr_lock == 0)
305 SCTP_IPI_ADDR_WUNLOCK();
306 /* Take away the reference, and possibly free it */
307 sctp_free_ifn(sctp_ifnp);
312 sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr,
313 const char *if_name, uint32_t ifn_index)
315 struct sctp_vrf *vrf;
316 struct sctp_ifa *sctp_ifap;
318 SCTP_IPI_ADDR_RLOCK();
319 vrf = sctp_find_vrf(vrf_id);
321 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
325 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
326 if (sctp_ifap == NULL) {
327 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
330 if (sctp_ifap->ifn_p == NULL) {
331 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unuseable\n");
335 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) != 0) {
336 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
337 sctp_ifap->ifn_p->ifn_name, if_name);
341 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
342 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
343 sctp_ifap->ifn_p->ifn_index, ifn_index);
348 sctp_ifap->localifa_flags &= (~SCTP_ADDR_VALID);
349 sctp_ifap->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE;
351 SCTP_IPI_ADDR_RUNLOCK();
356 sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr,
357 const char *if_name, uint32_t ifn_index)
359 struct sctp_vrf *vrf;
360 struct sctp_ifa *sctp_ifap;
362 SCTP_IPI_ADDR_RLOCK();
363 vrf = sctp_find_vrf(vrf_id);
365 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
369 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
370 if (sctp_ifap == NULL) {
371 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
374 if (sctp_ifap->ifn_p == NULL) {
375 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unuseable\n");
379 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) != 0) {
380 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
381 sctp_ifap->ifn_p->ifn_name, if_name);
385 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
386 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
387 sctp_ifap->ifn_p->ifn_index, ifn_index);
392 sctp_ifap->localifa_flags &= (~SCTP_ADDR_IFA_UNUSEABLE);
393 sctp_ifap->localifa_flags |= SCTP_ADDR_VALID;
395 SCTP_IPI_ADDR_RUNLOCK();
400 * Add an ifa to an ifn.
401 * Register the interface as necessary.
402 * NOTE: ADDR write lock MUST be held.
405 sctp_add_ifa_to_ifn(struct sctp_ifn *sctp_ifnp, struct sctp_ifa *sctp_ifap)
409 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
410 sctp_ifap->ifn_p = sctp_ifnp;
411 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
412 /* update address counts */
413 sctp_ifnp->ifa_count++;
414 ifa_af = sctp_ifap->address.sa.sa_family;
429 if (sctp_ifnp->ifa_count == 1) {
430 /* register the new interface */
431 SCTP_REGISTER_INTERFACE(sctp_ifnp->ifn_index, ifa_af);
432 sctp_ifnp->registered_af = ifa_af;
438 * Remove an ifa from its ifn.
439 * If no more addresses exist, remove the ifn too. Otherwise, re-register
440 * the interface based on the remaining address families left.
441 * NOTE: ADDR write lock MUST be held.
444 sctp_remove_ifa_from_ifn(struct sctp_ifa *sctp_ifap)
446 LIST_REMOVE(sctp_ifap, next_ifa);
447 if (sctp_ifap->ifn_p) {
448 /* update address counts */
449 sctp_ifap->ifn_p->ifa_count--;
450 switch (sctp_ifap->address.sa.sa_family) {
453 sctp_ifap->ifn_p->num_v4--;
458 sctp_ifap->ifn_p->num_v6--;
465 if (LIST_EMPTY(&sctp_ifap->ifn_p->ifalist)) {
466 /* remove the ifn, possibly freeing it */
467 sctp_delete_ifn(sctp_ifap->ifn_p, SCTP_ADDR_LOCKED);
469 /* re-register address family type, if needed */
470 if ((sctp_ifap->ifn_p->num_v6 == 0) &&
471 (sctp_ifap->ifn_p->registered_af == AF_INET6)) {
472 SCTP_DEREGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET6);
473 SCTP_REGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET);
474 sctp_ifap->ifn_p->registered_af = AF_INET;
475 } else if ((sctp_ifap->ifn_p->num_v4 == 0) &&
476 (sctp_ifap->ifn_p->registered_af == AF_INET)) {
477 SCTP_DEREGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET);
478 SCTP_REGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET6);
479 sctp_ifap->ifn_p->registered_af = AF_INET6;
481 /* free the ifn refcount */
482 sctp_free_ifn(sctp_ifap->ifn_p);
484 sctp_ifap->ifn_p = NULL;
490 sctp_add_addr_to_vrf(uint32_t vrf_id, void *ifn, uint32_t ifn_index,
491 uint32_t ifn_type, const char *if_name, void *ifa,
492 struct sockaddr *addr, uint32_t ifa_flags,
495 struct sctp_vrf *vrf;
496 struct sctp_ifn *sctp_ifnp = NULL;
497 struct sctp_ifa *sctp_ifap = NULL;
498 struct sctp_ifalist *hash_addr_head;
499 struct sctp_ifnlist *hash_ifn_head;
500 uint32_t hash_of_addr;
504 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: adding address: ", vrf_id);
505 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
507 SCTP_IPI_ADDR_WLOCK();
508 sctp_ifnp = sctp_find_ifn(ifn, ifn_index);
510 vrf = sctp_ifnp->vrf;
512 vrf = sctp_find_vrf(vrf_id);
514 vrf = sctp_allocate_vrf(vrf_id);
516 SCTP_IPI_ADDR_WUNLOCK();
521 if (sctp_ifnp == NULL) {
523 * build one and add it, can't hold lock until after malloc
526 SCTP_IPI_ADDR_WUNLOCK();
527 SCTP_MALLOC(sctp_ifnp, struct sctp_ifn *,
528 sizeof(struct sctp_ifn), SCTP_M_IFN);
529 if (sctp_ifnp == NULL) {
531 panic("No memory for IFN");
535 memset(sctp_ifnp, 0, sizeof(struct sctp_ifn));
536 sctp_ifnp->ifn_index = ifn_index;
537 sctp_ifnp->ifn_p = ifn;
538 sctp_ifnp->ifn_type = ifn_type;
539 sctp_ifnp->refcount = 0;
540 sctp_ifnp->vrf = vrf;
541 atomic_add_int(&vrf->refcount, 1);
542 sctp_ifnp->ifn_mtu = SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, addr->sa_family);
543 if (if_name != NULL) {
544 snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", if_name);
546 snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", "unknown");
548 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
549 LIST_INIT(&sctp_ifnp->ifalist);
550 SCTP_IPI_ADDR_WLOCK();
551 LIST_INSERT_HEAD(hash_ifn_head, sctp_ifnp, next_bucket);
552 LIST_INSERT_HEAD(&vrf->ifnlist, sctp_ifnp, next_ifn);
553 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
556 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
558 /* Hmm, it already exists? */
559 if ((sctp_ifap->ifn_p) &&
560 (sctp_ifap->ifn_p->ifn_index == ifn_index)) {
561 SCTPDBG(SCTP_DEBUG_PCB4, "Using existing ifn %s (0x%x) for ifa %p\n",
562 sctp_ifap->ifn_p->ifn_name, ifn_index,
565 /* Remove the created one that we don't want */
566 sctp_delete_ifn(sctp_ifnp, SCTP_ADDR_LOCKED);
568 if (sctp_ifap->localifa_flags & SCTP_BEING_DELETED) {
569 /* easy to solve, just switch back to active */
570 SCTPDBG(SCTP_DEBUG_PCB4, "Clearing deleted ifa flag\n");
571 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
572 sctp_ifap->ifn_p = sctp_ifnp;
573 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
576 SCTP_IPI_ADDR_WUNLOCK();
579 if (sctp_ifap->ifn_p) {
581 * The last IFN gets the address, remove the
584 SCTPDBG(SCTP_DEBUG_PCB4, "Moving ifa %p from %s (0x%x) to %s (0x%x)\n",
585 (void *)sctp_ifap, sctp_ifap->ifn_p->ifn_name,
586 sctp_ifap->ifn_p->ifn_index, if_name,
588 /* remove the address from the old ifn */
589 sctp_remove_ifa_from_ifn(sctp_ifap);
590 /* move the address over to the new ifn */
591 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
592 goto exit_stage_left;
594 /* repair ifnp which was NULL ? */
595 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
596 SCTPDBG(SCTP_DEBUG_PCB4, "Repairing ifn %p for ifa %p\n",
597 (void *)sctp_ifnp, (void *)sctp_ifap);
598 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
600 goto exit_stage_left;
603 SCTP_IPI_ADDR_WUNLOCK();
604 SCTP_MALLOC(sctp_ifap, struct sctp_ifa *, sizeof(struct sctp_ifa), SCTP_M_IFA);
605 if (sctp_ifap == NULL) {
607 panic("No memory for IFA");
611 memset(sctp_ifap, 0, sizeof(struct sctp_ifa));
612 sctp_ifap->ifn_p = sctp_ifnp;
613 atomic_add_int(&sctp_ifnp->refcount, 1);
614 sctp_ifap->vrf_id = vrf_id;
615 sctp_ifap->ifa = ifa;
616 memcpy(&sctp_ifap->address, addr, addr->sa_len);
617 sctp_ifap->localifa_flags = SCTP_ADDR_VALID | SCTP_ADDR_DEFER_USE;
618 sctp_ifap->flags = ifa_flags;
620 switch (sctp_ifap->address.sa.sa_family) {
624 struct sockaddr_in *sin;
626 sin = (struct sockaddr_in *)&sctp_ifap->address.sin;
627 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
628 (IN4_ISLOOPBACK_ADDRESS(&sin->sin_addr))) {
629 sctp_ifap->src_is_loop = 1;
631 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
632 sctp_ifap->src_is_priv = 1;
636 new_ifn_af = AF_INET;
643 /* ok to use deprecated addresses? */
644 struct sockaddr_in6 *sin6;
646 sin6 = (struct sockaddr_in6 *)&sctp_ifap->address.sin6;
647 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
648 (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))) {
649 sctp_ifap->src_is_loop = 1;
651 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
652 sctp_ifap->src_is_priv = 1;
656 new_ifn_af = AF_INET6;
664 hash_of_addr = sctp_get_ifa_hash_val(&sctp_ifap->address.sa);
666 if ((sctp_ifap->src_is_priv == 0) &&
667 (sctp_ifap->src_is_loop == 0)) {
668 sctp_ifap->src_is_glob = 1;
670 SCTP_IPI_ADDR_WLOCK();
671 hash_addr_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
672 LIST_INSERT_HEAD(hash_addr_head, sctp_ifap, next_bucket);
673 sctp_ifap->refcount = 1;
674 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
675 sctp_ifnp->ifa_count++;
676 vrf->total_ifa_count++;
677 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
679 SCTP_REGISTER_INTERFACE(ifn_index, new_ifn_af);
680 sctp_ifnp->registered_af = new_ifn_af;
682 SCTP_IPI_ADDR_WUNLOCK();
685 * Bump up the refcount so that when the timer completes it
686 * will drop back down.
688 struct sctp_laddr *wi;
690 atomic_add_int(&sctp_ifap->refcount, 1);
691 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
694 * Gak, what can we do? We have lost an address
695 * change can you say HOSED?
697 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
698 /* Opps, must decrement the count */
699 sctp_del_addr_from_vrf(vrf_id, addr, ifn_index,
703 SCTP_INCR_LADDR_COUNT();
704 bzero(wi, sizeof(*wi));
705 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
707 wi->action = SCTP_ADD_IP_ADDRESS;
710 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
711 SCTP_WQ_ADDR_UNLOCK();
713 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
714 (struct sctp_inpcb *)NULL,
715 (struct sctp_tcb *)NULL,
716 (struct sctp_nets *)NULL);
718 /* it's ready for use */
719 sctp_ifap->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
725 sctp_del_addr_from_vrf(uint32_t vrf_id, struct sockaddr *addr,
726 uint32_t ifn_index, const char *if_name)
728 struct sctp_vrf *vrf;
729 struct sctp_ifa *sctp_ifap = NULL;
731 SCTP_IPI_ADDR_WLOCK();
732 vrf = sctp_find_vrf(vrf_id);
734 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
738 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: deleting address:", vrf_id);
739 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
741 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
743 /* Validate the delete */
744 if (sctp_ifap->ifn_p) {
748 * The name has priority over the ifn_index
749 * if its given. We do this especially for
750 * panda who might recycle indexes fast.
753 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) == 0) {
754 /* They match its a correct delete */
759 /* last ditch check ifn_index */
760 if (ifn_index == sctp_ifap->ifn_p->ifn_index) {
765 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s does not match addresses\n",
766 ifn_index, ((if_name == NULL) ? "NULL" : if_name));
767 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s - ignoring delete\n",
768 sctp_ifap->ifn_p->ifn_index, sctp_ifap->ifn_p->ifn_name);
769 SCTP_IPI_ADDR_WUNLOCK();
773 SCTPDBG(SCTP_DEBUG_PCB4, "Deleting ifa %p\n", (void *)sctp_ifap);
774 sctp_ifap->localifa_flags &= SCTP_ADDR_VALID;
776 * We don't set the flag. This means that the structure will
777 * hang around in EP's that have bound specific to it until
778 * they close. This gives us TCP like behavior if someone
779 * removes an address (or for that matter adds it right
782 /* sctp_ifap->localifa_flags |= SCTP_BEING_DELETED; */
783 vrf->total_ifa_count--;
784 LIST_REMOVE(sctp_ifap, next_bucket);
785 sctp_remove_ifa_from_ifn(sctp_ifap);
789 SCTPDBG(SCTP_DEBUG_PCB4, "Del Addr-ifn:%d Could not find address:",
791 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
796 SCTP_IPI_ADDR_WUNLOCK();
798 struct sctp_laddr *wi;
800 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
803 * Gak, what can we do? We have lost an address
804 * change can you say HOSED?
806 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
808 /* Oops, must decrement the count */
809 sctp_free_ifa(sctp_ifap);
812 SCTP_INCR_LADDR_COUNT();
813 bzero(wi, sizeof(*wi));
814 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
816 wi->action = SCTP_DEL_IP_ADDRESS;
819 * Should this really be a tailq? As it is we will process
820 * the newest first :-0
822 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
823 SCTP_WQ_ADDR_UNLOCK();
825 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
826 (struct sctp_inpcb *)NULL,
827 (struct sctp_tcb *)NULL,
828 (struct sctp_nets *)NULL);
835 sctp_does_stcb_own_this_addr(struct sctp_tcb *stcb, struct sockaddr *to)
840 int ipv4_local_scope, ipv4_addr_legal;
844 int local_scope, site_scope, ipv6_addr_legal;
847 struct sctp_vrf *vrf;
848 struct sctp_ifn *sctp_ifn;
849 struct sctp_ifa *sctp_ifa;
851 loopback_scope = stcb->asoc.scope.loopback_scope;
853 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
854 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
857 local_scope = stcb->asoc.scope.local_scope;
858 site_scope = stcb->asoc.scope.site_scope;
859 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
862 SCTP_IPI_ADDR_RLOCK();
863 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
865 /* no vrf, no addresses */
866 SCTP_IPI_ADDR_RUNLOCK();
869 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
870 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
871 if ((loopback_scope == 0) &&
872 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
875 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
876 if (sctp_is_addr_restricted(stcb, sctp_ifa) &&
877 (!sctp_is_addr_pending(stcb, sctp_ifa))) {
879 * We allow pending addresses, where
880 * we have sent an asconf-add to be
885 if (sctp_ifa->address.sa.sa_family != to->sa_family) {
888 switch (sctp_ifa->address.sa.sa_family) {
891 if (ipv4_addr_legal) {
892 struct sockaddr_in *sin,
895 sin = &sctp_ifa->address.sin;
896 rsin = (struct sockaddr_in *)to;
897 if ((ipv4_local_scope == 0) &&
898 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
901 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
902 &sin->sin_addr) != 0) {
905 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
906 SCTP_IPI_ADDR_RUNLOCK();
914 if (ipv6_addr_legal) {
915 struct sockaddr_in6 *sin6,
918 sin6 = &sctp_ifa->address.sin6;
919 rsin6 = (struct sockaddr_in6 *)to;
920 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
921 &sin6->sin6_addr) != 0) {
924 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
925 if (local_scope == 0)
927 if (sin6->sin6_scope_id == 0) {
928 if (sa6_recoverscope(sin6) != 0)
932 if ((site_scope == 0) &&
933 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
936 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
937 SCTP_IPI_ADDR_RUNLOCK();
950 struct sctp_laddr *laddr;
952 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
953 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
954 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
957 if (sctp_is_addr_restricted(stcb, laddr->ifa) &&
958 (!sctp_is_addr_pending(stcb, laddr->ifa))) {
960 * We allow pending addresses, where we have
961 * sent an asconf-add to be considered
966 if (laddr->ifa->address.sa.sa_family != to->sa_family) {
969 switch (to->sa_family) {
973 struct sockaddr_in *sin, *rsin;
975 sin = (struct sockaddr_in *)&laddr->ifa->address.sin;
976 rsin = (struct sockaddr_in *)to;
977 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
978 SCTP_IPI_ADDR_RUNLOCK();
987 struct sockaddr_in6 *sin6, *rsin6;
989 sin6 = (struct sockaddr_in6 *)&laddr->ifa->address.sin6;
990 rsin6 = (struct sockaddr_in6 *)to;
991 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
992 SCTP_IPI_ADDR_RUNLOCK();
1006 SCTP_IPI_ADDR_RUNLOCK();
1011 static struct sctp_tcb *
1012 sctp_tcb_special_locate(struct sctp_inpcb **inp_p, struct sockaddr *from,
1013 struct sockaddr *to, struct sctp_nets **netp, uint32_t vrf_id)
1015 /**** ASSUMES THE CALLER holds the INP_INFO_RLOCK */
1017 * If we support the TCP model, then we must now dig through to see
1018 * if we can find our endpoint in the list of tcp ep's.
1020 uint16_t lport, rport;
1021 struct sctppcbhead *ephead;
1022 struct sctp_inpcb *inp;
1023 struct sctp_laddr *laddr;
1024 struct sctp_tcb *stcb;
1025 struct sctp_nets *net;
1027 if ((to == NULL) || (from == NULL)) {
1030 switch (to->sa_family) {
1033 if (from->sa_family == AF_INET) {
1034 lport = ((struct sockaddr_in *)to)->sin_port;
1035 rport = ((struct sockaddr_in *)from)->sin_port;
1043 if (from->sa_family == AF_INET6) {
1044 lport = ((struct sockaddr_in6 *)to)->sin6_port;
1045 rport = ((struct sockaddr_in6 *)from)->sin6_port;
1054 ephead = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
1056 * Ok now for each of the guys in this bucket we must look and see:
1057 * - Does the remote port match. - Does there single association's
1058 * addresses match this address (to). If so we update p_ep to point
1059 * to this ep and return the tcb from it.
1061 LIST_FOREACH(inp, ephead, sctp_hash) {
1062 SCTP_INP_RLOCK(inp);
1063 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1064 SCTP_INP_RUNLOCK(inp);
1067 if (lport != inp->sctp_lport) {
1068 SCTP_INP_RUNLOCK(inp);
1071 switch (to->sa_family) {
1075 struct sockaddr_in *sin;
1077 sin = (struct sockaddr_in *)to;
1078 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
1079 &sin->sin_addr) != 0) {
1080 SCTP_INP_RUNLOCK(inp);
1089 struct sockaddr_in6 *sin6;
1091 sin6 = (struct sockaddr_in6 *)to;
1092 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
1093 &sin6->sin6_addr) != 0) {
1094 SCTP_INP_RUNLOCK(inp);
1101 SCTP_INP_RUNLOCK(inp);
1104 if (inp->def_vrf_id != vrf_id) {
1105 SCTP_INP_RUNLOCK(inp);
1108 /* check to see if the ep has one of the addresses */
1109 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
1110 /* We are NOT bound all, so look further */
1113 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1115 if (laddr->ifa == NULL) {
1116 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n", __FUNCTION__);
1119 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1120 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
1123 if (laddr->ifa->address.sa.sa_family ==
1125 /* see if it matches */
1127 if (from->sa_family == AF_INET) {
1128 struct sockaddr_in *intf_addr,
1131 intf_addr = &laddr->ifa->address.sin;
1132 sin = (struct sockaddr_in *)to;
1133 if (sin->sin_addr.s_addr ==
1134 intf_addr->sin_addr.s_addr) {
1141 if (from->sa_family == AF_INET6) {
1142 struct sockaddr_in6 *intf_addr6;
1143 struct sockaddr_in6 *sin6;
1145 sin6 = (struct sockaddr_in6 *)
1147 intf_addr6 = &laddr->ifa->address.sin6;
1149 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1159 /* This endpoint does not have this address */
1160 SCTP_INP_RUNLOCK(inp);
1165 * Ok if we hit here the ep has the address, does it hold
1168 /* XXX: Why don't we TAILQ_FOREACH through sctp_asoc_list? */
1169 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1171 SCTP_INP_RUNLOCK(inp);
1174 SCTP_TCB_LOCK(stcb);
1175 if (!sctp_does_stcb_own_this_addr(stcb, to)) {
1176 SCTP_TCB_UNLOCK(stcb);
1177 SCTP_INP_RUNLOCK(inp);
1180 if (stcb->rport != rport) {
1181 /* remote port does not match. */
1182 SCTP_TCB_UNLOCK(stcb);
1183 SCTP_INP_RUNLOCK(inp);
1186 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1187 SCTP_TCB_UNLOCK(stcb);
1188 SCTP_INP_RUNLOCK(inp);
1191 if (!sctp_does_stcb_own_this_addr(stcb, to)) {
1192 SCTP_TCB_UNLOCK(stcb);
1193 SCTP_INP_RUNLOCK(inp);
1196 /* Does this TCB have a matching address? */
1197 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1199 if (net->ro._l_addr.sa.sa_family != from->sa_family) {
1200 /* not the same family, can't be a match */
1203 switch (from->sa_family) {
1207 struct sockaddr_in *sin, *rsin;
1209 sin = (struct sockaddr_in *)&net->ro._l_addr;
1210 rsin = (struct sockaddr_in *)from;
1211 if (sin->sin_addr.s_addr ==
1212 rsin->sin_addr.s_addr) {
1218 * Update the endpoint
1222 SCTP_INP_RUNLOCK(inp);
1231 struct sockaddr_in6 *sin6, *rsin6;
1233 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1234 rsin6 = (struct sockaddr_in6 *)from;
1235 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1242 * Update the endpoint
1246 SCTP_INP_RUNLOCK(inp);
1257 SCTP_TCB_UNLOCK(stcb);
1258 SCTP_INP_RUNLOCK(inp);
1267 * 1) If I return a NULL you must decrement any INP ref cnt. 2) If I find an
1268 * stcb, both will be locked (locked_tcb and stcb) but decrement will be done
1269 * (if locked == NULL). 3) Decrement happens on return ONLY if locked ==
1274 sctp_findassociation_ep_addr(struct sctp_inpcb **inp_p, struct sockaddr *remote,
1275 struct sctp_nets **netp, struct sockaddr *local, struct sctp_tcb *locked_tcb)
1277 struct sctpasochead *head;
1278 struct sctp_inpcb *inp;
1279 struct sctp_tcb *stcb = NULL;
1280 struct sctp_nets *net;
1284 switch (remote->sa_family) {
1287 rport = (((struct sockaddr_in *)remote)->sin_port);
1292 rport = (((struct sockaddr_in6 *)remote)->sin6_port);
1300 * UN-lock so we can do proper locking here this occurs when
1301 * called from load_addresses_from_init.
1303 atomic_add_int(&locked_tcb->asoc.refcnt, 1);
1304 SCTP_TCB_UNLOCK(locked_tcb);
1306 SCTP_INP_INFO_RLOCK();
1307 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
1308 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
1310 * Now either this guy is our listener or it's the
1311 * connector. If it is the one that issued the connect, then
1312 * it's only chance is to be the first TCB in the list. If
1313 * it is the acceptor, then do the special_lookup to hash
1314 * and find the real inp.
1316 if ((inp->sctp_socket) && (inp->sctp_socket->so_qlimit)) {
1317 /* to is peer addr, from is my addr */
1318 stcb = sctp_tcb_special_locate(inp_p, remote, local,
1319 netp, inp->def_vrf_id);
1320 if ((stcb != NULL) && (locked_tcb == NULL)) {
1321 /* we have a locked tcb, lower refcount */
1322 SCTP_INP_DECR_REF(inp);
1324 if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
1325 SCTP_INP_RLOCK(locked_tcb->sctp_ep);
1326 SCTP_TCB_LOCK(locked_tcb);
1327 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1328 SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
1330 SCTP_INP_INFO_RUNLOCK();
1333 SCTP_INP_WLOCK(inp);
1334 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1337 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1341 SCTP_TCB_LOCK(stcb);
1343 if (stcb->rport != rport) {
1344 /* remote port does not match. */
1345 SCTP_TCB_UNLOCK(stcb);
1348 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1349 SCTP_TCB_UNLOCK(stcb);
1352 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1353 SCTP_TCB_UNLOCK(stcb);
1356 /* now look at the list of remote addresses */
1357 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1359 if (net == (TAILQ_NEXT(net, sctp_next))) {
1360 panic("Corrupt net list");
1363 if (net->ro._l_addr.sa.sa_family !=
1364 remote->sa_family) {
1365 /* not the same family */
1368 switch (remote->sa_family) {
1372 struct sockaddr_in *sin,
1375 sin = (struct sockaddr_in *)
1377 rsin = (struct sockaddr_in *)remote;
1378 if (sin->sin_addr.s_addr ==
1379 rsin->sin_addr.s_addr) {
1384 if (locked_tcb == NULL) {
1385 SCTP_INP_DECR_REF(inp);
1386 } else if (locked_tcb != stcb) {
1387 SCTP_TCB_LOCK(locked_tcb);
1390 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1392 SCTP_INP_WUNLOCK(inp);
1393 SCTP_INP_INFO_RUNLOCK();
1402 struct sockaddr_in6 *sin6,
1405 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1406 rsin6 = (struct sockaddr_in6 *)remote;
1407 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1413 if (locked_tcb == NULL) {
1414 SCTP_INP_DECR_REF(inp);
1415 } else if (locked_tcb != stcb) {
1416 SCTP_TCB_LOCK(locked_tcb);
1419 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1421 SCTP_INP_WUNLOCK(inp);
1422 SCTP_INP_INFO_RUNLOCK();
1433 SCTP_TCB_UNLOCK(stcb);
1436 SCTP_INP_WLOCK(inp);
1437 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1440 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport,
1441 inp->sctp_hashmark)];
1445 LIST_FOREACH(stcb, head, sctp_tcbhash) {
1446 if (stcb->rport != rport) {
1447 /* remote port does not match */
1450 SCTP_TCB_LOCK(stcb);
1451 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1452 SCTP_TCB_UNLOCK(stcb);
1455 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1456 SCTP_TCB_UNLOCK(stcb);
1459 /* now look at the list of remote addresses */
1460 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1462 if (net == (TAILQ_NEXT(net, sctp_next))) {
1463 panic("Corrupt net list");
1466 if (net->ro._l_addr.sa.sa_family !=
1467 remote->sa_family) {
1468 /* not the same family */
1471 switch (remote->sa_family) {
1475 struct sockaddr_in *sin,
1478 sin = (struct sockaddr_in *)
1480 rsin = (struct sockaddr_in *)remote;
1481 if (sin->sin_addr.s_addr ==
1482 rsin->sin_addr.s_addr) {
1487 if (locked_tcb == NULL) {
1488 SCTP_INP_DECR_REF(inp);
1489 } else if (locked_tcb != stcb) {
1490 SCTP_TCB_LOCK(locked_tcb);
1493 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1495 SCTP_INP_WUNLOCK(inp);
1496 SCTP_INP_INFO_RUNLOCK();
1505 struct sockaddr_in6 *sin6,
1508 sin6 = (struct sockaddr_in6 *)
1510 rsin6 = (struct sockaddr_in6 *)remote;
1511 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1517 if (locked_tcb == NULL) {
1518 SCTP_INP_DECR_REF(inp);
1519 } else if (locked_tcb != stcb) {
1520 SCTP_TCB_LOCK(locked_tcb);
1523 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1525 SCTP_INP_WUNLOCK(inp);
1526 SCTP_INP_INFO_RUNLOCK();
1537 SCTP_TCB_UNLOCK(stcb);
1541 /* clean up for returning null */
1543 SCTP_TCB_LOCK(locked_tcb);
1544 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1546 SCTP_INP_WUNLOCK(inp);
1547 SCTP_INP_INFO_RUNLOCK();
1554 * Find an association for a specific endpoint using the association id given
1555 * out in the COMM_UP notification
1558 sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1561 * Use my the assoc_id to find a endpoint
1563 struct sctpasochead *head;
1564 struct sctp_tcb *stcb;
1568 SCTP_PRINTF("TSNH ep_associd\n");
1571 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1572 SCTP_PRINTF("TSNH ep_associd0\n");
1575 id = (uint32_t) asoc_id;
1576 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
1578 /* invalid id TSNH */
1579 SCTP_PRINTF("TSNH ep_associd1\n");
1582 LIST_FOREACH(stcb, head, sctp_tcbasocidhash) {
1583 if (stcb->asoc.assoc_id == id) {
1584 if (inp != stcb->sctp_ep) {
1586 * some other guy has the same id active (id
1589 SCTP_PRINTF("TSNH ep_associd2\n");
1592 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1596 SCTP_TCB_LOCK(stcb);
1606 sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1608 struct sctp_tcb *stcb;
1610 SCTP_INP_RLOCK(inp);
1611 stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
1612 SCTP_INP_RUNLOCK(inp);
1618 * Endpoint probe expects that the INP_INFO is locked.
1620 static struct sctp_inpcb *
1621 sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head,
1622 uint16_t lport, uint32_t vrf_id)
1624 struct sctp_inpcb *inp;
1625 struct sctp_laddr *laddr;
1628 struct sockaddr_in *sin;
1632 struct sockaddr_in6 *sin6;
1633 struct sockaddr_in6 *intf_addr6;
1644 switch (nam->sa_family) {
1647 sin = (struct sockaddr_in *)nam;
1652 sin6 = (struct sockaddr_in6 *)nam;
1656 /* unsupported family */
1663 LIST_FOREACH(inp, head, sctp_hash) {
1664 SCTP_INP_RLOCK(inp);
1665 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1666 SCTP_INP_RUNLOCK(inp);
1669 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) &&
1670 (inp->sctp_lport == lport)) {
1672 switch (nam->sa_family) {
1675 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1676 SCTP_IPV6_V6ONLY(inp)) {
1678 * IPv4 on a IPv6 socket with ONLY
1681 SCTP_INP_RUNLOCK(inp);
1684 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
1685 &sin->sin_addr) != 0) {
1686 SCTP_INP_RUNLOCK(inp);
1694 * A V6 address and the endpoint is NOT
1697 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
1698 SCTP_INP_RUNLOCK(inp);
1701 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
1702 &sin6->sin6_addr) != 0) {
1703 SCTP_INP_RUNLOCK(inp);
1711 /* does a VRF id match? */
1713 if (inp->def_vrf_id == vrf_id)
1716 SCTP_INP_RUNLOCK(inp);
1721 SCTP_INP_RUNLOCK(inp);
1723 switch (nam->sa_family) {
1726 if (sin->sin_addr.s_addr == INADDR_ANY) {
1727 /* Can't hunt for one that has no address specified */
1734 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1735 /* Can't hunt for one that has no address specified */
1744 * ok, not bound to all so see if we can find a EP bound to this
1747 LIST_FOREACH(inp, head, sctp_hash) {
1748 SCTP_INP_RLOCK(inp);
1749 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1750 SCTP_INP_RUNLOCK(inp);
1753 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
1754 SCTP_INP_RUNLOCK(inp);
1758 * Ok this could be a likely candidate, look at all of its
1761 if (inp->sctp_lport != lport) {
1762 SCTP_INP_RUNLOCK(inp);
1765 /* does a VRF id match? */
1767 if (inp->def_vrf_id == vrf_id)
1771 SCTP_INP_RUNLOCK(inp);
1774 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1775 if (laddr->ifa == NULL) {
1776 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
1780 SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ",
1781 (void *)laddr->ifa);
1782 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1783 SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n");
1786 if (laddr->ifa->address.sa.sa_family == nam->sa_family) {
1787 /* possible, see if it matches */
1788 switch (nam->sa_family) {
1791 if (sin->sin_addr.s_addr ==
1792 laddr->ifa->address.sin.sin_addr.s_addr) {
1793 SCTP_INP_RUNLOCK(inp);
1800 intf_addr6 = &laddr->ifa->address.sin6;
1801 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1803 SCTP_INP_RUNLOCK(inp);
1811 SCTP_INP_RUNLOCK(inp);
1817 static struct sctp_inpcb *
1818 sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
1820 struct sctppcbhead *head;
1821 struct sctp_inpcb *t_inp;
1824 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1825 SCTP_BASE_INFO(hashmark))];
1826 LIST_FOREACH(t_inp, head, sctp_hash) {
1827 if (t_inp->sctp_lport != lport) {
1830 /* is it in the VRF in question */
1832 if (t_inp->def_vrf_id == vrf_id)
1837 /* This one is in use. */
1838 /* check the v6/v4 binding issue */
1839 if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1840 SCTP_IPV6_V6ONLY(t_inp)) {
1841 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1842 /* collision in V6 space */
1845 /* inp is BOUND_V4 no conflict */
1848 } else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1849 /* t_inp is bound v4 and v6, conflict always */
1852 /* t_inp is bound only V4 */
1853 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1854 SCTP_IPV6_V6ONLY(inp)) {
1858 /* else fall through to conflict */
1867 sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
1869 /* For 1-2-1 with port reuse */
1870 struct sctppcbhead *head;
1871 struct sctp_inpcb *tinp;
1873 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
1874 /* only works with port reuse on */
1877 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) {
1880 SCTP_INP_RUNLOCK(inp);
1881 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport,
1882 SCTP_BASE_INFO(hashmark))];
1883 /* Kick out all non-listeners to the TCP hash */
1884 LIST_FOREACH(tinp, head, sctp_hash) {
1885 if (tinp->sctp_lport != inp->sctp_lport) {
1888 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1891 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
1894 if (tinp->sctp_socket->so_qlimit) {
1897 SCTP_INP_WLOCK(tinp);
1898 LIST_REMOVE(tinp, sctp_hash);
1899 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))];
1900 tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
1901 LIST_INSERT_HEAD(head, tinp, sctp_hash);
1902 SCTP_INP_WUNLOCK(tinp);
1904 SCTP_INP_WLOCK(inp);
1905 /* Pull from where he was */
1906 LIST_REMOVE(inp, sctp_hash);
1907 inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL;
1908 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))];
1909 LIST_INSERT_HEAD(head, inp, sctp_hash);
1910 SCTP_INP_WUNLOCK(inp);
1911 SCTP_INP_RLOCK(inp);
1917 sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock,
1921 * First we check the hash table to see if someone has this port
1922 * bound with just the port.
1924 struct sctp_inpcb *inp;
1925 struct sctppcbhead *head;
1930 struct sockaddr_in *sin;
1934 struct sockaddr_in6 *sin6;
1938 switch (nam->sa_family) {
1941 sin = (struct sockaddr_in *)nam;
1942 lport = sin->sin_port;
1947 sin6 = (struct sockaddr_in6 *)nam;
1948 lport = sin6->sin6_port;
1955 * I could cheat here and just cast to one of the types but we will
1956 * do it right. It also provides the check against an Unsupported
1959 /* Find the head of the ALLADDR chain */
1960 if (have_lock == 0) {
1961 SCTP_INP_INFO_RLOCK();
1963 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1964 SCTP_BASE_INFO(hashmark))];
1965 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1968 * If the TCP model exists it could be that the main listening
1969 * endpoint is gone but there still exists a connected socket for
1970 * this guy. If so we can return the first one that we find. This
1971 * may NOT be the correct one so the caller should be wary on the
1972 * returned INP. Currently the only caller that sets find_tcp_pool
1973 * is in bindx where we are verifying that a user CAN bind the
1974 * address. He either has bound it already, or someone else has, or
1975 * its open to bind, so this is good enough.
1977 if (inp == NULL && find_tcp_pool) {
1978 for (i = 0; i < SCTP_BASE_INFO(hashtcpmark) + 1; i++) {
1979 head = &SCTP_BASE_INFO(sctp_tcpephash)[i];
1980 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1987 SCTP_INP_INCR_REF(inp);
1989 if (have_lock == 0) {
1990 SCTP_INP_INFO_RUNLOCK();
1997 * Find an association for an endpoint with the pointer to whom you want to
1998 * send to and the endpoint pointer. The address can be IPv4 or IPv6. We may
1999 * need to change the *to to some other struct like a mbuf...
2002 sctp_findassociation_addr_sa(struct sockaddr *from, struct sockaddr *to,
2003 struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool,
2006 struct sctp_inpcb *inp = NULL;
2007 struct sctp_tcb *stcb;
2009 SCTP_INP_INFO_RLOCK();
2010 if (find_tcp_pool) {
2011 if (inp_p != NULL) {
2012 stcb = sctp_tcb_special_locate(inp_p, from, to, netp,
2015 stcb = sctp_tcb_special_locate(&inp, from, to, netp,
2019 SCTP_INP_INFO_RUNLOCK();
2023 inp = sctp_pcb_findep(to, 0, 1, vrf_id);
2024 if (inp_p != NULL) {
2027 SCTP_INP_INFO_RUNLOCK();
2032 * ok, we have an endpoint, now lets find the assoc for it (if any)
2033 * we now place the source address or from in the to of the find
2034 * endpoint call. Since in reality this chain is used from the
2035 * inbound packet side.
2037 if (inp_p != NULL) {
2038 stcb = sctp_findassociation_ep_addr(inp_p, from, netp, to,
2041 stcb = sctp_findassociation_ep_addr(&inp, from, netp, to,
2049 * This routine will grub through the mbuf that is a INIT or INIT-ACK and
2050 * find all addresses that the sender has specified in any address list. Each
2051 * address will be used to lookup the TCB and see if one exits.
2053 static struct sctp_tcb *
2054 sctp_findassociation_special_addr(struct mbuf *m, int offset,
2055 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp,
2056 struct sockaddr *dst)
2058 struct sctp_paramhdr *phdr, parm_buf;
2060 #if defined(INET) || defined(INET6)
2061 struct sctp_tcb *stcb;
2068 struct sockaddr_in sin4;
2072 struct sockaddr_in6 sin6;
2077 memset(&sin4, 0, sizeof(sin4));
2078 sin4.sin_len = sizeof(sin4);
2079 sin4.sin_family = AF_INET;
2080 sin4.sin_port = sh->src_port;
2083 memset(&sin6, 0, sizeof(sin6));
2084 sin6.sin6_len = sizeof(sin6);
2085 sin6.sin6_family = AF_INET6;
2086 sin6.sin6_port = sh->src_port;
2089 offset += sizeof(struct sctp_init_chunk);
2091 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
2092 while (phdr != NULL) {
2093 /* now we must see if we want the parameter */
2094 #if defined(INET) || defined(INET6)
2095 ptype = ntohs(phdr->param_type);
2097 plen = ntohs(phdr->param_length);
2102 if (ptype == SCTP_IPV4_ADDRESS &&
2103 plen == sizeof(struct sctp_ipv4addr_param)) {
2104 /* Get the rest of the address */
2105 struct sctp_ipv4addr_param ip4_parm, *p4;
2107 phdr = sctp_get_next_param(m, offset,
2108 (struct sctp_paramhdr *)&ip4_parm, min(plen, sizeof(ip4_parm)));
2112 p4 = (struct sctp_ipv4addr_param *)phdr;
2113 memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr));
2115 stcb = sctp_findassociation_ep_addr(inp_p,
2116 (struct sockaddr *)&sin4, netp, dst, NULL);
2123 if (ptype == SCTP_IPV6_ADDRESS &&
2124 plen == sizeof(struct sctp_ipv6addr_param)) {
2125 /* Get the rest of the address */
2126 struct sctp_ipv6addr_param ip6_parm, *p6;
2128 phdr = sctp_get_next_param(m, offset,
2129 (struct sctp_paramhdr *)&ip6_parm, min(plen, sizeof(ip6_parm)));
2133 p6 = (struct sctp_ipv6addr_param *)phdr;
2134 memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr));
2136 stcb = sctp_findassociation_ep_addr(inp_p,
2137 (struct sockaddr *)&sin6, netp, dst, NULL);
2143 offset += SCTP_SIZE32(plen);
2144 phdr = sctp_get_next_param(m, offset, &parm_buf,
2150 static struct sctp_tcb *
2151 sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag,
2152 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport,
2153 uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
2156 * Use my vtag to hash. If we find it we then verify the source addr
2157 * is in the assoc. If all goes well we save a bit on rec of a
2160 struct sctpasochead *head;
2161 struct sctp_nets *net;
2162 struct sctp_tcb *stcb;
2164 SCTP_INP_INFO_RLOCK();
2165 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag,
2166 SCTP_BASE_INFO(hashasocmark))];
2169 SCTP_INP_INFO_RUNLOCK();
2172 LIST_FOREACH(stcb, head, sctp_asocs) {
2173 SCTP_INP_RLOCK(stcb->sctp_ep);
2174 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
2175 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2178 if (stcb->sctp_ep->def_vrf_id != vrf_id) {
2179 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2182 SCTP_TCB_LOCK(stcb);
2183 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2184 if (stcb->asoc.my_vtag == vtag) {
2186 if (stcb->rport != rport) {
2187 SCTP_TCB_UNLOCK(stcb);
2190 if (stcb->sctp_ep->sctp_lport != lport) {
2191 SCTP_TCB_UNLOCK(stcb);
2194 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
2195 SCTP_TCB_UNLOCK(stcb);
2198 /* RRS:Need toaddr check here */
2199 if (sctp_does_stcb_own_this_addr(stcb, to) == 0) {
2200 /* Endpoint does not own this address */
2201 SCTP_TCB_UNLOCK(stcb);
2206 * If we have both vtags that's all we match
2209 if (stcb->asoc.peer_vtag == remote_tag) {
2211 * If both tags match we consider it
2212 * conclusive and check NO
2213 * source/destination addresses
2218 if (skip_src_check) {
2221 *netp = sctp_findnet(stcb, from);
2223 *netp = NULL; /* unknown */
2226 *inp_p = stcb->sctp_ep;
2227 SCTP_INP_INFO_RUNLOCK();
2230 net = sctp_findnet(stcb, from);
2234 SCTP_STAT_INCR(sctps_vtagexpress);
2235 *inp_p = stcb->sctp_ep;
2236 SCTP_INP_INFO_RUNLOCK();
2240 * not him, this should only happen in rare
2241 * cases so I peg it.
2243 SCTP_STAT_INCR(sctps_vtagbogus);
2246 SCTP_TCB_UNLOCK(stcb);
2248 SCTP_INP_INFO_RUNLOCK();
2254 * Find an association with the pointer to the inbound IP packet. This can be
2255 * a IPv4 or IPv6 packet.
2258 sctp_findassociation_addr(struct mbuf *m, int offset,
2259 struct sockaddr *src, struct sockaddr *dst,
2260 struct sctphdr *sh, struct sctp_chunkhdr *ch,
2261 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2264 struct sctp_tcb *stcb;
2265 struct sctp_inpcb *inp;
2268 /* we only go down this path if vtag is non-zero */
2269 stcb = sctp_findassoc_by_vtag(src, dst, ntohl(sh->v_tag),
2270 inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0);
2276 if ((ch->chunk_type != SCTP_INITIATION) &&
2277 (ch->chunk_type != SCTP_INITIATION_ACK) &&
2278 (ch->chunk_type != SCTP_COOKIE_ACK) &&
2279 (ch->chunk_type != SCTP_COOKIE_ECHO)) {
2280 /* Other chunk types go to the tcp pool. */
2284 stcb = sctp_findassociation_addr_sa(src, dst, inp_p, netp,
2285 find_tcp_pool, vrf_id);
2288 stcb = sctp_findassociation_addr_sa(src, dst, &inp, netp,
2289 find_tcp_pool, vrf_id);
2291 SCTPDBG(SCTP_DEBUG_PCB1, "stcb:%p inp:%p\n", (void *)stcb, (void *)inp);
2292 if (stcb == NULL && inp) {
2293 /* Found a EP but not this address */
2294 if ((ch->chunk_type == SCTP_INITIATION) ||
2295 (ch->chunk_type == SCTP_INITIATION_ACK)) {
2297 * special hook, we do NOT return linp or an
2298 * association that is linked to an existing
2299 * association that is under the TCP pool (i.e. no
2300 * listener exists). The endpoint finding routine
2301 * will always find a listener before examining the
2304 if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
2310 stcb = sctp_findassociation_special_addr(m,
2311 offset, sh, &inp, netp, dst);
2312 if (inp_p != NULL) {
2317 SCTPDBG(SCTP_DEBUG_PCB1, "stcb is %p\n", (void *)stcb);
2322 * lookup an association by an ASCONF lookup address.
2323 * if the lookup address is 0.0.0.0 or ::0, use the vtag to do the lookup
2326 sctp_findassociation_ep_asconf(struct mbuf *m, int offset,
2327 struct sockaddr *dst, struct sctphdr *sh,
2328 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2330 struct sctp_tcb *stcb;
2331 struct sockaddr_storage remote_store;
2332 struct sctp_paramhdr parm_buf, *phdr;
2334 int zero_address = 0;
2337 struct sockaddr_in *sin;
2341 struct sockaddr_in6 *sin6;
2345 memset(&remote_store, 0, sizeof(remote_store));
2346 phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk),
2347 &parm_buf, sizeof(struct sctp_paramhdr));
2349 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n",
2353 ptype = (int)((uint32_t) ntohs(phdr->param_type));
2354 /* get the correlation address */
2357 case SCTP_IPV6_ADDRESS:
2359 /* ipv6 address param */
2360 struct sctp_ipv6addr_param *p6, p6_buf;
2362 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) {
2365 p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m,
2366 offset + sizeof(struct sctp_asconf_chunk),
2367 &p6_buf.ph, sizeof(*p6));
2369 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n",
2373 sin6 = (struct sockaddr_in6 *)&remote_store;
2374 sin6->sin6_family = AF_INET6;
2375 sin6->sin6_len = sizeof(*sin6);
2376 sin6->sin6_port = sh->src_port;
2377 memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr));
2378 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
2384 case SCTP_IPV4_ADDRESS:
2386 /* ipv4 address param */
2387 struct sctp_ipv4addr_param *p4, p4_buf;
2389 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) {
2392 p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m,
2393 offset + sizeof(struct sctp_asconf_chunk),
2394 &p4_buf.ph, sizeof(*p4));
2396 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n",
2400 sin = (struct sockaddr_in *)&remote_store;
2401 sin->sin_family = AF_INET;
2402 sin->sin_len = sizeof(*sin);
2403 sin->sin_port = sh->src_port;
2404 memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr));
2405 if (sin->sin_addr.s_addr == INADDR_ANY)
2411 /* invalid address param type */
2416 stcb = sctp_findassoc_by_vtag(NULL, dst, ntohl(sh->v_tag), inp_p,
2417 netp, sh->src_port, sh->dest_port, 1, vrf_id, 0);
2419 SCTP_INP_DECR_REF(*inp_p);
2422 stcb = sctp_findassociation_ep_addr(inp_p,
2423 (struct sockaddr *)&remote_store, netp,
2431 * allocate a sctp_inpcb and setup a temporary binding to a port/all
2432 * addresses. This way if we don't get a bind we by default pick a ephemeral
2433 * port with all addresses bound.
2436 sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
2439 * we get called when a new endpoint starts up. We need to allocate
2440 * the sctp_inpcb structure from the zone and init it. Mark it as
2441 * unbound and find a port that we can use as an ephemeral with
2442 * INADDR_ANY. If the user binds later no problem we can then add in
2443 * the specific addresses. And setup the default parameters for the
2447 struct sctp_inpcb *inp;
2449 struct timeval time;
2450 sctp_sharedkey_t *null_key;
2454 SCTP_INP_INFO_WLOCK();
2455 inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb);
2457 SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n");
2458 SCTP_INP_INFO_WUNLOCK();
2459 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2463 bzero(inp, sizeof(*inp));
2465 /* bump generations */
2466 /* setup socket pointers */
2467 inp->sctp_socket = so;
2468 inp->ip_inp.inp.inp_socket = so;
2469 inp->ip_inp.inp.inp_cred = crhold(so->so_cred);
2471 if (INP_SOCKAF(so) == AF_INET6) {
2472 if (MODULE_GLOBAL(ip6_auto_flowlabel)) {
2473 inp->ip_inp.inp.inp_flags |= IN6P_AUTOFLOWLABEL;
2475 if (MODULE_GLOBAL(ip6_v6only)) {
2476 inp->ip_inp.inp.inp_flags |= IN6P_IPV6_V6ONLY;
2480 inp->sctp_associd_counter = 1;
2481 inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT;
2482 inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
2483 inp->sctp_cmt_on_off = SCTP_BASE_SYSCTL(sctp_cmt_on_off);
2484 inp->sctp_ecn_enable = SCTP_BASE_SYSCTL(sctp_ecn_enable);
2485 /* init the small hash table we use to track asocid <-> tcb */
2486 inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark);
2487 if (inp->sctp_asocidhash == NULL) {
2488 crfree(inp->ip_inp.inp.inp_cred);
2489 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2490 SCTP_INP_INFO_WUNLOCK();
2495 struct inpcbpolicy *pcb_sp = NULL;
2497 error = ipsec_init_policy(so, &pcb_sp);
2498 /* Arrange to share the policy */
2499 inp->ip_inp.inp.inp_sp = pcb_sp;
2500 ((struct in6pcb *)(&inp->ip_inp.inp))->in6p_sp = pcb_sp;
2503 crfree(inp->ip_inp.inp.inp_cred);
2504 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2505 SCTP_INP_INFO_WUNLOCK();
2509 SCTP_INCR_EP_COUNT();
2510 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
2511 SCTP_INP_INFO_WUNLOCK();
2513 so->so_pcb = (caddr_t)inp;
2515 if (SCTP_SO_TYPE(so) == SOCK_SEQPACKET) {
2516 /* UDP style socket */
2517 inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
2518 SCTP_PCB_FLAGS_UNBOUND);
2519 /* Be sure it is NON-BLOCKING IO for UDP */
2520 /* SCTP_SET_SO_NBIO(so); */
2521 } else if (SCTP_SO_TYPE(so) == SOCK_STREAM) {
2522 /* TCP style socket */
2523 inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
2524 SCTP_PCB_FLAGS_UNBOUND);
2525 /* Be sure we have blocking IO by default */
2526 SCTP_CLEAR_SO_NBIO(so);
2529 * unsupported socket type (RAW, etc)- in case we missed it
2532 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
2534 crfree(inp->ip_inp.inp.inp_cred);
2535 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2536 return (EOPNOTSUPP);
2538 if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) {
2539 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2540 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2541 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) {
2542 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2543 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2544 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) {
2545 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2546 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2548 inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize),
2549 &inp->sctp_hashmark);
2550 if (inp->sctp_tcbhash == NULL) {
2551 SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
2552 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2554 crfree(inp->ip_inp.inp.inp_cred);
2555 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2558 inp->def_vrf_id = vrf_id;
2560 SCTP_INP_INFO_WLOCK();
2561 SCTP_INP_LOCK_INIT(inp);
2562 INP_LOCK_INIT(&inp->ip_inp.inp, "inp", "sctpinp");
2563 SCTP_INP_READ_INIT(inp);
2564 SCTP_ASOC_CREATE_LOCK_INIT(inp);
2565 /* lock the new ep */
2566 SCTP_INP_WLOCK(inp);
2568 /* add it to the info area */
2569 LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list);
2570 SCTP_INP_INFO_WUNLOCK();
2572 TAILQ_INIT(&inp->read_queue);
2573 LIST_INIT(&inp->sctp_addr_list);
2575 LIST_INIT(&inp->sctp_asoc_list);
2577 #ifdef SCTP_TRACK_FREED_ASOCS
2579 LIST_INIT(&inp->sctp_asoc_free_list);
2581 /* Init the timer structure for signature change */
2582 SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer);
2583 inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE;
2585 /* now init the actual endpoint default data */
2588 /* setup the base timeout information */
2589 m->sctp_timeoutticks[SCTP_TIMER_SEND] = SEC_TO_TICKS(SCTP_SEND_SEC); /* needed ? */
2590 m->sctp_timeoutticks[SCTP_TIMER_INIT] = SEC_TO_TICKS(SCTP_INIT_SEC); /* needed ? */
2591 m->sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default));
2592 m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default));
2593 m->sctp_timeoutticks[SCTP_TIMER_PMTU] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default));
2594 m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default));
2595 m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default));
2596 /* all max/min max are in ms */
2597 m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default);
2598 m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default);
2599 m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default);
2600 m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default);
2601 m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default);
2602 m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default);
2603 m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default);
2604 m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default);
2605 m->def_net_pf_threshold = SCTP_BASE_SYSCTL(sctp_path_pf_threshold);
2606 m->sctp_sws_sender = SCTP_SWS_SENDER_DEF;
2607 m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF;
2608 m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default);
2609 m->fr_max_burst = SCTP_BASE_SYSCTL(sctp_fr_max_burst_default);
2611 m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module);
2612 m->sctp_default_ss_module = SCTP_BASE_SYSCTL(sctp_default_ss_module);
2613 m->max_open_streams_intome = SCTP_BASE_SYSCTL(sctp_nr_incoming_streams_default);
2614 /* number of streams to pre-open on a association */
2615 m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default);
2617 /* Add adaptation cookie */
2618 m->adaptation_layer_indicator = 0;
2619 m->adaptation_layer_indicator_provided = 0;
2621 /* seed random number generator */
2622 m->random_counter = 1;
2623 m->store_at = SCTP_SIGNATURE_SIZE;
2624 SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers));
2625 sctp_fill_random_store(m);
2627 /* Minimum cookie size */
2628 m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) +
2629 sizeof(struct sctp_state_cookie);
2630 m->size_of_a_cookie += SCTP_SIGNATURE_SIZE;
2632 /* Setup the initial secret */
2633 (void)SCTP_GETTIME_TIMEVAL(&time);
2634 m->time_of_secret_change = time.tv_sec;
2636 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
2637 m->secret_key[0][i] = sctp_select_initial_TSN(m);
2639 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
2641 /* How long is a cookie good for ? */
2642 m->def_cookie_life = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default));
2644 * Initialize authentication parameters
2646 m->local_hmacs = sctp_default_supported_hmaclist();
2647 m->local_auth_chunks = sctp_alloc_chunklist();
2648 m->default_dscp = 0;
2650 m->default_flowlabel = 0;
2652 m->port = 0; /* encapsulation disabled by default */
2653 sctp_auth_set_default_chunks(m->local_auth_chunks);
2654 LIST_INIT(&m->shared_keys);
2655 /* add default NULL key as key id 0 */
2656 null_key = sctp_alloc_sharedkey();
2657 sctp_insert_sharedkey(&m->shared_keys, null_key);
2658 SCTP_INP_WUNLOCK(inp);
2659 #ifdef SCTP_LOG_CLOSING
2660 sctp_log_closing(inp, NULL, 12);
2667 sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp,
2668 struct sctp_tcb *stcb)
2670 struct sctp_nets *net;
2671 uint16_t lport, rport;
2672 struct sctppcbhead *head;
2673 struct sctp_laddr *laddr, *oladdr;
2675 atomic_add_int(&stcb->asoc.refcnt, 1);
2676 SCTP_TCB_UNLOCK(stcb);
2677 SCTP_INP_INFO_WLOCK();
2678 SCTP_INP_WLOCK(old_inp);
2679 SCTP_INP_WLOCK(new_inp);
2680 SCTP_TCB_LOCK(stcb);
2681 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2683 new_inp->sctp_ep.time_of_secret_change =
2684 old_inp->sctp_ep.time_of_secret_change;
2685 memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key,
2686 sizeof(old_inp->sctp_ep.secret_key));
2687 new_inp->sctp_ep.current_secret_number =
2688 old_inp->sctp_ep.current_secret_number;
2689 new_inp->sctp_ep.last_secret_number =
2690 old_inp->sctp_ep.last_secret_number;
2691 new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie;
2693 /* make it so new data pours into the new socket */
2694 stcb->sctp_socket = new_inp->sctp_socket;
2695 stcb->sctp_ep = new_inp;
2697 /* Copy the port across */
2698 lport = new_inp->sctp_lport = old_inp->sctp_lport;
2699 rport = stcb->rport;
2700 /* Pull the tcb from the old association */
2701 LIST_REMOVE(stcb, sctp_tcbhash);
2702 LIST_REMOVE(stcb, sctp_tcblist);
2703 if (stcb->asoc.in_asocid_hash) {
2704 LIST_REMOVE(stcb, sctp_tcbasocidhash);
2706 /* Now insert the new_inp into the TCP connected hash */
2707 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
2709 LIST_INSERT_HEAD(head, new_inp, sctp_hash);
2710 /* Its safe to access */
2711 new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
2713 /* Now move the tcb into the endpoint list */
2714 LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist);
2716 * Question, do we even need to worry about the ep-hash since we
2717 * only have one connection? Probably not :> so lets get rid of it
2718 * and not suck up any kernel memory in that.
2720 if (stcb->asoc.in_asocid_hash) {
2721 struct sctpasochead *lhd;
2723 lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id,
2724 new_inp->hashasocidmark)];
2725 LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash);
2727 /* Ok. Let's restart timer. */
2728 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2729 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp,
2733 SCTP_INP_INFO_WUNLOCK();
2734 if (new_inp->sctp_tcbhash != NULL) {
2735 SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark);
2736 new_inp->sctp_tcbhash = NULL;
2738 if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2739 /* Subset bound, so copy in the laddr list from the old_inp */
2740 LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) {
2741 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2742 if (laddr == NULL) {
2744 * Gak, what can we do? This assoc is really
2745 * HOSED. We probably should send an abort
2748 SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n");
2751 SCTP_INCR_LADDR_COUNT();
2752 bzero(laddr, sizeof(*laddr));
2753 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2754 laddr->ifa = oladdr->ifa;
2755 atomic_add_int(&laddr->ifa->refcount, 1);
2756 LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr,
2758 new_inp->laddr_count++;
2759 if (oladdr == stcb->asoc.last_used_address) {
2760 stcb->asoc.last_used_address = laddr;
2765 * Now any running timers need to be adjusted since we really don't
2766 * care if they are running or not just blast in the new_inp into
2770 stcb->asoc.dack_timer.ep = (void *)new_inp;
2771 stcb->asoc.asconf_timer.ep = (void *)new_inp;
2772 stcb->asoc.strreset_timer.ep = (void *)new_inp;
2773 stcb->asoc.shut_guard_timer.ep = (void *)new_inp;
2774 stcb->asoc.autoclose_timer.ep = (void *)new_inp;
2775 stcb->asoc.delayed_event_timer.ep = (void *)new_inp;
2776 stcb->asoc.delete_prim_timer.ep = (void *)new_inp;
2777 /* now what about the nets? */
2778 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2779 net->pmtu_timer.ep = (void *)new_inp;
2780 net->hb_timer.ep = (void *)new_inp;
2781 net->rxt_timer.ep = (void *)new_inp;
2783 SCTP_INP_WUNLOCK(new_inp);
2784 SCTP_INP_WUNLOCK(old_inp);
2790 /* sctp_ifap is used to bypass normal local address validation checks */
2792 sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
2793 struct sctp_ifa *sctp_ifap, struct thread *p)
2795 /* bind a ep to a socket address */
2796 struct sctppcbhead *head;
2797 struct sctp_inpcb *inp, *inp_tmp;
2798 struct inpcb *ip_inp;
2799 int port_reuse_active = 0;
2807 inp = (struct sctp_inpcb *)so->so_pcb;
2808 ip_inp = (struct inpcb *)so->so_pcb;
2811 SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port: %d\n",
2812 ntohs(((struct sockaddr_in *)addr)->sin_port));
2813 SCTPDBG(SCTP_DEBUG_PCB1, "Addr: ");
2814 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
2817 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2818 /* already did a bind, subsequent binds NOT allowed ! */
2819 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2824 panic("null proc/thread");
2827 switch (addr->sa_family) {
2831 struct sockaddr_in *sin;
2833 /* IPV6_V6ONLY socket? */
2834 if (SCTP_IPV6_V6ONLY(ip_inp)) {
2835 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2838 if (addr->sa_len != sizeof(*sin)) {
2839 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2842 sin = (struct sockaddr_in *)addr;
2843 lport = sin->sin_port;
2845 * For LOOPBACK the prison_local_ip4() call
2846 * will transmute the ip address to the
2849 if (p && (error = prison_local_ip4(p->td_ucred, &sin->sin_addr)) != 0) {
2850 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2853 if (sin->sin_addr.s_addr != INADDR_ANY) {
2863 * Only for pure IPv6 Address. (No IPv4
2866 struct sockaddr_in6 *sin6;
2868 sin6 = (struct sockaddr_in6 *)addr;
2870 if (addr->sa_len != sizeof(*sin6)) {
2871 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2874 lport = sin6->sin6_port;
2876 * For LOOPBACK the prison_local_ip6() call
2877 * will transmute the ipv6 address to the
2880 if (p && (error = prison_local_ip6(p->td_ucred, &sin6->sin6_addr,
2881 (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
2882 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2885 if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2887 /* KAME hack: embed scopeid */
2888 if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
2889 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2893 /* this must be cleared for ifa_ifwithaddr() */
2894 sin6->sin6_scope_id = 0;
2899 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EAFNOSUPPORT);
2900 return (EAFNOSUPPORT);
2903 SCTP_INP_INFO_WLOCK();
2904 SCTP_INP_WLOCK(inp);
2905 /* Setup a vrf_id to be the default for the non-bind-all case. */
2906 vrf_id = inp->def_vrf_id;
2908 /* increase our count due to the unlock we do */
2909 SCTP_INP_INCR_REF(inp);
2912 * Did the caller specify a port? if so we must see if an ep
2913 * already has this one bound.
2915 /* got to be root to get at low ports */
2916 if (ntohs(lport) < IPPORT_RESERVED) {
2918 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2920 SCTP_INP_DECR_REF(inp);
2921 SCTP_INP_WUNLOCK(inp);
2922 SCTP_INP_INFO_WUNLOCK();
2926 SCTP_INP_WUNLOCK(inp);
2928 vrf_id = inp->def_vrf_id;
2929 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2930 if (inp_tmp != NULL) {
2932 * lock guy returned and lower count note
2933 * that we are not bound so inp_tmp should
2934 * NEVER be inp. And it is this inp
2935 * (inp_tmp) that gets the reference bump,
2936 * so we must lower it.
2938 SCTP_INP_DECR_REF(inp_tmp);
2940 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2941 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2943 * Ok, must be one-2-one and
2944 * allowing port re-use
2946 port_reuse_active = 1;
2947 goto continue_anyway;
2949 SCTP_INP_DECR_REF(inp);
2950 SCTP_INP_INFO_WUNLOCK();
2951 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2952 return (EADDRINUSE);
2955 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2956 if (inp_tmp != NULL) {
2958 * lock guy returned and lower count note
2959 * that we are not bound so inp_tmp should
2960 * NEVER be inp. And it is this inp
2961 * (inp_tmp) that gets the reference bump,
2962 * so we must lower it.
2964 SCTP_INP_DECR_REF(inp_tmp);
2966 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2967 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2969 * Ok, must be one-2-one and
2970 * allowing port re-use
2972 port_reuse_active = 1;
2973 goto continue_anyway;
2975 SCTP_INP_DECR_REF(inp);
2976 SCTP_INP_INFO_WUNLOCK();
2977 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2978 return (EADDRINUSE);
2982 SCTP_INP_WLOCK(inp);
2984 /* verify that no lport is not used by a singleton */
2985 if ((port_reuse_active == 0) &&
2986 (inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))) {
2987 /* Sorry someone already has this one bound */
2988 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2989 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2990 port_reuse_active = 1;
2992 SCTP_INP_DECR_REF(inp);
2993 SCTP_INP_WUNLOCK(inp);
2994 SCTP_INP_INFO_WUNLOCK();
2995 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2996 return (EADDRINUSE);
3001 uint16_t first, last, candidate;
3005 if (ip_inp->inp_flags & INP_HIGHPORT) {
3006 first = MODULE_GLOBAL(ipport_hifirstauto);
3007 last = MODULE_GLOBAL(ipport_hilastauto);
3008 } else if (ip_inp->inp_flags & INP_LOWPORT) {
3010 priv_check(p, PRIV_NETINET_RESERVEDPORT)
3012 SCTP_INP_DECR_REF(inp);
3013 SCTP_INP_WUNLOCK(inp);
3014 SCTP_INP_INFO_WUNLOCK();
3015 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
3018 first = MODULE_GLOBAL(ipport_lowfirstauto);
3019 last = MODULE_GLOBAL(ipport_lowlastauto);
3021 first = MODULE_GLOBAL(ipport_firstauto);
3022 last = MODULE_GLOBAL(ipport_lastauto);
3031 count = last - first + 1; /* number of candidates */
3032 candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count);
3036 if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) {
3041 SCTP_INP_DECR_REF(inp);
3042 SCTP_INP_WUNLOCK(inp);
3043 SCTP_INP_INFO_WUNLOCK();
3044 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3045 return (EADDRINUSE);
3047 if (candidate == last)
3050 candidate = candidate + 1;
3053 lport = htons(candidate);
3055 SCTP_INP_DECR_REF(inp);
3056 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE |
3057 SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
3059 * this really should not happen. The guy did a non-blocking
3060 * bind and then did a close at the same time.
3062 SCTP_INP_WUNLOCK(inp);
3063 SCTP_INP_INFO_WUNLOCK();
3064 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3067 /* ok we look clear to give out this port, so lets setup the binding */
3069 /* binding to all addresses, so just set in the proper flags */
3070 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL;
3071 /* set the automatic addr changes from kernel flag */
3072 if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) {
3073 sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3074 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3076 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3077 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3079 if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) {
3080 sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3082 sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3085 * set the automatic mobility_base from kernel flag (by
3088 if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) {
3089 sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE);
3090 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3092 sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE);
3093 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3096 * set the automatic mobility_fasthandoff from kernel flag
3099 if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) {
3100 sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF);
3101 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3103 sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF);
3104 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3108 * bind specific, make sure flags is off and add a new
3109 * address structure to the sctp_addr_list inside the ep
3112 * We will need to allocate one and insert it at the head. The
3113 * socketopt call can just insert new addresses in there as
3114 * well. It will also have to do the embed scope kame hack
3115 * too (before adding).
3117 struct sctp_ifa *ifa;
3118 struct sockaddr_storage store_sa;
3120 memset(&store_sa, 0, sizeof(store_sa));
3121 switch (addr->sa_family) {
3125 struct sockaddr_in *sin;
3127 sin = (struct sockaddr_in *)&store_sa;
3128 memcpy(sin, addr, sizeof(struct sockaddr_in));
3136 struct sockaddr_in6 *sin6;
3138 sin6 = (struct sockaddr_in6 *)&store_sa;
3139 memcpy(sin6, addr, sizeof(struct sockaddr_in6));
3140 sin6->sin6_port = 0;
3148 * first find the interface with the bound address need to
3149 * zero out the port to find the address! yuck! can't do
3150 * this earlier since need port for sctp_pcb_findep()
3152 if (sctp_ifap != NULL) {
3156 * Note for BSD we hit here always other O/S's will
3157 * pass things in via the sctp_ifap argument
3160 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&store_sa,
3161 vrf_id, SCTP_ADDR_NOT_LOCKED);
3164 /* Can't find an interface with that address */
3165 SCTP_INP_WUNLOCK(inp);
3166 SCTP_INP_INFO_WUNLOCK();
3167 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRNOTAVAIL);
3168 return (EADDRNOTAVAIL);
3171 if (addr->sa_family == AF_INET6) {
3172 /* GAK, more FIXME IFA lock? */
3173 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
3174 /* Can't bind a non-existent addr. */
3175 SCTP_INP_WUNLOCK(inp);
3176 SCTP_INP_INFO_WUNLOCK();
3177 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3182 /* we're not bound all */
3183 inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL;
3184 /* allow bindx() to send ASCONF's for binding changes */
3185 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3186 /* clear automatic addr changes from kernel flag */
3187 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3189 /* add this address to the endpoint list */
3190 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0);
3192 SCTP_INP_WUNLOCK(inp);
3193 SCTP_INP_INFO_WUNLOCK();
3198 /* find the bucket */
3199 if (port_reuse_active) {
3200 /* Put it into tcp 1-2-1 hash */
3201 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))];
3202 inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
3204 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))];
3206 /* put it in the bucket */
3207 LIST_INSERT_HEAD(head, inp, sctp_hash);
3208 SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n",
3209 (void *)head, ntohs(lport), port_reuse_active);
3210 /* set in the port */
3211 inp->sctp_lport = lport;
3213 /* turn off just the unbound flag */
3214 inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
3215 SCTP_INP_WUNLOCK(inp);
3216 SCTP_INP_INFO_WUNLOCK();
3222 sctp_iterator_inp_being_freed(struct sctp_inpcb *inp)
3224 struct sctp_iterator *it, *nit;
3227 * We enter with the only the ITERATOR_LOCK in place and a write
3228 * lock on the inp_info stuff.
3230 it = sctp_it_ctl.cur_it;
3231 if (it && (it->vn != curvnet)) {
3232 /* Its not looking at our VNET */
3235 if (it && (it->inp == inp)) {
3237 * This is tricky and we hold the iterator lock, but when it
3238 * returns and gets the lock (when we release it) the
3239 * iterator will try to operate on inp. We need to stop that
3240 * from happening. But of course the iterator has a
3241 * reference on the stcb and inp. We can mark it and it will
3244 * If its a single iterator situation, we set the end iterator
3245 * flag. Otherwise we set the iterator to go to the next
3249 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3250 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
3252 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_INP;
3256 * Now go through and remove any single reference to our inp that
3257 * may be still pending on the list
3259 SCTP_IPI_ITERATOR_WQ_LOCK();
3260 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
3261 if (it->vn != curvnet) {
3264 if (it->inp == inp) {
3265 /* This one points to me is it inp specific? */
3266 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3267 /* Remove and free this one */
3268 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
3270 if (it->function_atend != NULL) {
3271 (*it->function_atend) (it->pointer, it->val);
3273 SCTP_FREE(it, SCTP_M_ITER);
3275 it->inp = LIST_NEXT(it->inp, sctp_list);
3277 SCTP_INP_INCR_REF(it->inp);
3281 * When its put in the refcnt is incremented so decr
3284 SCTP_INP_DECR_REF(inp);
3287 SCTP_IPI_ITERATOR_WQ_UNLOCK();
3290 /* release sctp_inpcb unbind the port */
3292 sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
3295 * Here we free a endpoint. We must find it (if it is in the Hash
3296 * table) and remove it from there. Then we must also find it in the
3297 * overall list and remove it from there. After all removals are
3298 * complete then any timer has to be stopped. Then start the actual
3299 * freeing. a) Any local lists. b) Any associations. c) The hash of
3300 * all associations. d) finally the ep itself.
3302 struct sctp_tcb *asoc, *nasoc;
3303 struct sctp_laddr *laddr, *nladdr;
3304 struct inpcb *ip_pcb;
3306 int being_refed = 0;
3307 struct sctp_queued_to_read *sq, *nsq;
3309 sctp_sharedkey_t *shared_key, *nshared_key;
3312 #ifdef SCTP_LOG_CLOSING
3313 sctp_log_closing(inp, NULL, 0);
3315 SCTP_ITERATOR_LOCK();
3316 /* mark any iterators on the list or being processed */
3317 sctp_iterator_inp_being_freed(inp);
3318 SCTP_ITERATOR_UNLOCK();
3319 so = inp->sctp_socket;
3320 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
3321 /* been here before.. eeks.. get out of here */
3322 SCTP_PRINTF("This conflict in free SHOULD not be happening! from %d, imm %d\n", from, immediate);
3323 #ifdef SCTP_LOG_CLOSING
3324 sctp_log_closing(inp, NULL, 1);
3328 SCTP_ASOC_CREATE_LOCK(inp);
3329 SCTP_INP_INFO_WLOCK();
3331 SCTP_INP_WLOCK(inp);
3332 if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
3333 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP;
3334 /* socket is gone, so no more wakeups allowed */
3335 inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE;
3336 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
3337 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
3340 /* First time through we have the socket lock, after that no more. */
3341 sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL,
3342 SCTP_FROM_SCTP_PCB + SCTP_LOC_1);
3345 sctp_m_freem(inp->control);
3346 inp->control = NULL;
3349 sctp_m_freem(inp->pkt);
3352 ip_pcb = &inp->ip_inp.inp; /* we could just cast the main pointer
3353 * here but I will be nice :> (i.e.
3355 if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
3359 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3360 SCTP_TCB_LOCK(asoc);
3361 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3362 /* Skip guys being freed */
3364 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3366 * Special case - we did not start a
3367 * kill timer on the asoc due to it
3368 * was not closed. So go ahead and
3371 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3372 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3374 SCTP_TCB_UNLOCK(asoc);
3377 if (((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_WAIT) ||
3378 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_ECHOED)) &&
3379 (asoc->asoc.total_output_queue_size == 0)) {
3381 * If we have data in queue, we don't want
3382 * to just free since the app may have done,
3383 * send()/close or connect/send/close. And
3384 * it wants the data to get across first.
3386 /* Just abandon things in the front states */
3387 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE,
3388 SCTP_FROM_SCTP_PCB + SCTP_LOC_2) == 0) {
3393 /* Disconnect the socket please */
3394 asoc->sctp_socket = NULL;
3395 asoc->asoc.state |= SCTP_STATE_CLOSED_SOCKET;
3396 if ((asoc->asoc.size_on_reasm_queue > 0) ||
3397 (asoc->asoc.control_pdapi) ||
3398 (asoc->asoc.size_on_all_streams > 0) ||
3399 (so && (so->so_rcv.sb_cc > 0))) {
3400 /* Left with Data unread */
3401 struct mbuf *op_err;
3403 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3404 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_3;
3405 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3406 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3407 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3408 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3409 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3411 if (sctp_free_assoc(inp, asoc,
3412 SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_4) == 0) {
3416 } else if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3417 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3418 (asoc->asoc.stream_queue_cnt == 0)) {
3419 if (asoc->asoc.locked_on_sending) {
3422 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
3423 (SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
3424 struct sctp_nets *netp;
3427 * there is nothing queued to send,
3428 * so I send shutdown
3430 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3431 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3432 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3434 SCTP_SET_STATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_SENT);
3435 SCTP_CLEAR_SUBSTATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_PENDING);
3436 sctp_stop_timers_for_shutdown(asoc);
3437 if (asoc->asoc.alternate) {
3438 netp = asoc->asoc.alternate;
3440 netp = asoc->asoc.primary_destination;
3442 sctp_send_shutdown(asoc, netp);
3443 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, asoc->sctp_ep, asoc,
3445 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3446 asoc->asoc.primary_destination);
3447 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED);
3450 /* mark into shutdown pending */
3451 struct sctp_stream_queue_pending *sp;
3453 asoc->asoc.state |= SCTP_STATE_SHUTDOWN_PENDING;
3454 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3455 asoc->asoc.primary_destination);
3456 if (asoc->asoc.locked_on_sending) {
3457 sp = TAILQ_LAST(&((asoc->asoc.locked_on_sending)->outqueue),
3460 SCTP_PRINTF("Error, sp is NULL, locked on sending is %p strm:%d\n",
3461 (void *)asoc->asoc.locked_on_sending,
3462 asoc->asoc.locked_on_sending->stream_no);
3464 if ((sp->length == 0) && (sp->msg_is_complete == 0))
3465 asoc->asoc.state |= SCTP_STATE_PARTIAL_MSG_LEFT;
3468 if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3469 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3470 (asoc->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
3471 struct mbuf *op_err;
3474 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3475 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_5;
3476 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3477 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3478 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3479 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3480 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3482 if (sctp_free_assoc(inp, asoc,
3483 SCTP_PCBFREE_NOFORCE,
3484 SCTP_FROM_SCTP_PCB + SCTP_LOC_6) == 0) {
3489 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
3493 SCTP_TCB_UNLOCK(asoc);
3495 /* now is there some left in our SHUTDOWN state? */
3497 #ifdef SCTP_LOG_CLOSING
3498 sctp_log_closing(inp, NULL, 2);
3500 inp->sctp_socket = NULL;
3501 SCTP_INP_WUNLOCK(inp);
3502 SCTP_ASOC_CREATE_UNLOCK(inp);
3503 SCTP_INP_INFO_WUNLOCK();
3507 inp->sctp_socket = NULL;
3508 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) !=
3509 SCTP_PCB_FLAGS_UNBOUND) {
3511 * ok, this guy has been bound. It's port is somewhere in
3512 * the SCTP_BASE_INFO(hash table). Remove it!
3514 LIST_REMOVE(inp, sctp_hash);
3515 inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND;
3518 * If there is a timer running to kill us, forget it, since it may
3519 * have a contest on the INP lock.. which would cause us to die ...
3522 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3523 SCTP_TCB_LOCK(asoc);
3524 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3525 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3526 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3527 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3530 SCTP_TCB_UNLOCK(asoc);
3533 /* Free associations that are NOT killing us */
3534 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_COOKIE_WAIT) &&
3535 ((asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) {
3536 struct mbuf *op_err;
3538 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3539 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_7;
3540 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3541 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3542 } else if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3544 SCTP_TCB_UNLOCK(asoc);
3547 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3548 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3549 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3551 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_8) == 0) {
3556 /* Ok we have someone out there that will kill us */
3557 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3558 #ifdef SCTP_LOG_CLOSING
3559 sctp_log_closing(inp, NULL, 3);
3561 SCTP_INP_WUNLOCK(inp);
3562 SCTP_ASOC_CREATE_UNLOCK(inp);
3563 SCTP_INP_INFO_WUNLOCK();
3566 if (SCTP_INP_LOCK_CONTENDED(inp))
3568 if (SCTP_INP_READ_CONTENDED(inp))
3570 if (SCTP_ASOC_CREATE_LOCK_CONTENDED(inp))
3573 if ((inp->refcount) ||
3575 (inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) {
3576 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3577 #ifdef SCTP_LOG_CLOSING
3578 sctp_log_closing(inp, NULL, 4);
3580 sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
3581 SCTP_INP_WUNLOCK(inp);
3582 SCTP_ASOC_CREATE_UNLOCK(inp);
3583 SCTP_INP_INFO_WUNLOCK();
3586 inp->sctp_ep.signature_change.type = 0;
3587 inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE;
3589 * Remove it from the list .. last thing we need a lock for.
3591 LIST_REMOVE(inp, sctp_list);
3592 SCTP_INP_WUNLOCK(inp);
3593 SCTP_ASOC_CREATE_UNLOCK(inp);
3594 SCTP_INP_INFO_WUNLOCK();
3596 * Now we release all locks. Since this INP cannot be found anymore
3597 * except possibly by the kill timer that might be running. We call
3598 * the drain function here. It should hit the case were it sees the
3599 * ACTIVE flag cleared and exit out freeing us to proceed and
3600 * destroy everything.
3602 if (from != SCTP_CALLED_FROM_INPKILL_TIMER) {
3603 (void)SCTP_OS_TIMER_STOP_DRAIN(&inp->sctp_ep.signature_change.timer);
3605 /* Probably un-needed */
3606 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3609 #ifdef SCTP_LOG_CLOSING
3610 sctp_log_closing(inp, NULL, 5);
3614 if ((inp->sctp_asocidhash) != NULL) {
3615 SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark);
3616 inp->sctp_asocidhash = NULL;
3618 /* sa_ignore FREED_MEMORY */
3619 TAILQ_FOREACH_SAFE(sq, &inp->read_queue, next, nsq) {
3620 /* Its only abandoned if it had data left */
3622 SCTP_STAT_INCR(sctps_left_abandon);
3624 TAILQ_REMOVE(&inp->read_queue, sq, next);
3625 sctp_free_remote_addr(sq->whoFrom);
3627 so->so_rcv.sb_cc -= sq->length;
3629 sctp_m_freem(sq->data);
3633 * no need to free the net count, since at this point all
3636 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
3637 SCTP_DECR_READQ_COUNT();
3639 /* Now the sctp_pcb things */
3641 * free each asoc if it is not already closed/free. we can't use the
3642 * macro here since le_next will get freed as part of the
3643 * sctp_free_assoc() call.
3647 ipsec_delete_pcbpolicy(ip_pcb);
3650 /* Unlocks not needed since the socket is gone now */
3652 if (ip_pcb->inp_options) {
3653 (void)sctp_m_free(ip_pcb->inp_options);
3654 ip_pcb->inp_options = 0;
3657 if (ip_pcb->inp_vflag & INP_IPV6) {
3658 struct in6pcb *in6p;
3660 in6p = (struct in6pcb *)inp;
3661 ip6_freepcbopts(in6p->in6p_outputopts);
3664 ip_pcb->inp_vflag = 0;
3665 /* free up authentication fields */
3666 if (inp->sctp_ep.local_auth_chunks != NULL)
3667 sctp_free_chunklist(inp->sctp_ep.local_auth_chunks);
3668 if (inp->sctp_ep.local_hmacs != NULL)
3669 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3671 LIST_FOREACH_SAFE(shared_key, &inp->sctp_ep.shared_keys, next, nshared_key) {
3672 LIST_REMOVE(shared_key, next);
3673 sctp_free_sharedkey(shared_key);
3674 /* sa_ignore FREED_MEMORY */
3678 * if we have an address list the following will free the list of
3679 * ifaddr's that are set into this ep. Again macro limitations here,
3680 * since the LIST_FOREACH could be a bad idea.
3682 LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
3683 sctp_remove_laddr(laddr);
3686 #ifdef SCTP_TRACK_FREED_ASOCS
3688 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_free_list, sctp_tcblist, nasoc) {
3689 LIST_REMOVE(asoc, sctp_tcblist);
3690 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), asoc);
3691 SCTP_DECR_ASOC_COUNT();
3693 /* *** END TEMP CODE *** */
3695 /* Now lets see about freeing the EP hash table. */
3696 if (inp->sctp_tcbhash != NULL) {
3697 SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
3698 inp->sctp_tcbhash = NULL;
3700 /* Now we must put the ep memory back into the zone pool */
3701 crfree(inp->ip_inp.inp.inp_cred);
3702 INP_LOCK_DESTROY(&inp->ip_inp.inp);
3703 SCTP_INP_LOCK_DESTROY(inp);
3704 SCTP_INP_READ_DESTROY(inp);
3705 SCTP_ASOC_CREATE_LOCK_DESTROY(inp);
3706 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
3707 SCTP_DECR_EP_COUNT();
3712 sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
3714 struct sctp_nets *net;
3716 /* locate the address */
3717 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3718 if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr))
3726 sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
3728 struct sctp_ifa *sctp_ifa;
3730 sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED);
3739 * add's a remote endpoint address, done with the INIT/INIT-ACK as well as
3740 * when a ASCONF arrives that adds it. It will also initialize all the cwnd
3744 sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
3745 struct sctp_nets **netp, int set_scope, int from)
3748 * The following is redundant to the same lines in the
3749 * sctp_aloc_assoc() but is needed since others call the add address
3752 struct sctp_nets *net, *netfirst;
3755 SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ",
3757 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr);
3759 netfirst = sctp_findnet(stcb, newaddr);
3762 * Lie and return ok, we don't want to make the association
3763 * go away for this behavior. It will happen in the TCP
3764 * model in a connected socket. It does not reach the hash
3765 * table until after the association is built so it can't be
3766 * found. Mark as reachable, since the initial creation will
3767 * have been cleared and the NOT_IN_ASSOC flag will have
3768 * been added... and we don't want to end up removing it
3771 if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) {
3772 netfirst->dest_state = (SCTP_ADDR_REACHABLE |
3773 SCTP_ADDR_UNCONFIRMED);
3775 netfirst->dest_state = SCTP_ADDR_REACHABLE;
3781 switch (newaddr->sa_family) {
3785 struct sockaddr_in *sin;
3787 sin = (struct sockaddr_in *)newaddr;
3788 if (sin->sin_addr.s_addr == 0) {
3789 /* Invalid address */
3792 /* zero out the bzero area */
3793 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
3795 /* assure len is set */
3796 sin->sin_len = sizeof(struct sockaddr_in);
3798 #ifdef SCTP_DONT_DO_PRIVADDR_SCOPE
3799 stcb->asoc.scope.ipv4_local_scope = 1;
3801 if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
3802 stcb->asoc.scope.ipv4_local_scope = 1;
3804 #endif /* SCTP_DONT_DO_PRIVADDR_SCOPE */
3806 /* Validate the address is in scope */
3807 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) &&
3808 (stcb->asoc.scope.ipv4_local_scope == 0)) {
3818 struct sockaddr_in6 *sin6;
3820 sin6 = (struct sockaddr_in6 *)newaddr;
3821 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3822 /* Invalid address */
3825 /* assure len is set */
3826 sin6->sin6_len = sizeof(struct sockaddr_in6);
3828 if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) {
3829 stcb->asoc.scope.loopback_scope = 1;
3830 stcb->asoc.scope.local_scope = 0;
3831 stcb->asoc.scope.ipv4_local_scope = 1;
3832 stcb->asoc.scope.site_scope = 1;
3833 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
3835 * If the new destination is a
3836 * LINK_LOCAL we must have common
3837 * site scope. Don't set the local
3838 * scope since we may not share all
3839 * links, only loopback can do this.
3840 * Links on the local network would
3841 * also be on our private network
3844 stcb->asoc.scope.ipv4_local_scope = 1;
3845 stcb->asoc.scope.site_scope = 1;
3846 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
3848 * If the new destination is
3849 * SITE_LOCAL then we must have site
3852 stcb->asoc.scope.site_scope = 1;
3855 /* Validate the address is in scope */
3856 if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) &&
3857 (stcb->asoc.scope.loopback_scope == 0)) {
3859 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
3860 (stcb->asoc.scope.local_scope == 0)) {
3862 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
3863 (stcb->asoc.scope.site_scope == 0)) {
3871 /* not supported family type */
3874 net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets);
3878 SCTP_INCR_RADDR_COUNT();
3879 bzero(net, sizeof(struct sctp_nets));
3880 (void)SCTP_GETTIME_TIMEVAL(&net->start_time);
3881 memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len);
3882 switch (newaddr->sa_family) {
3885 ((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport;
3890 ((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport;
3896 net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id);
3897 if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) {
3898 stcb->asoc.scope.loopback_scope = 1;
3899 stcb->asoc.scope.ipv4_local_scope = 1;
3900 stcb->asoc.scope.local_scope = 0;
3901 stcb->asoc.scope.site_scope = 1;
3904 net->failure_threshold = stcb->asoc.def_net_failure;
3905 net->pf_threshold = stcb->asoc.def_net_pf_threshold;
3906 if (addr_inscope == 0) {
3907 net->dest_state = (SCTP_ADDR_REACHABLE |
3908 SCTP_ADDR_OUT_OF_SCOPE);
3910 if (from == SCTP_ADDR_IS_CONFIRMED)
3911 /* SCTP_ADDR_IS_CONFIRMED is passed by connect_x */
3912 net->dest_state = SCTP_ADDR_REACHABLE;
3914 net->dest_state = SCTP_ADDR_REACHABLE |
3915 SCTP_ADDR_UNCONFIRMED;
3918 * We set this to 0, the timer code knows that this means its an
3921 net->rto_needed = 1;
3923 net->RTO_measured = 0;
3924 stcb->asoc.numnets++;
3926 net->cwr_window_tsn = net->last_cwr_tsn = stcb->asoc.sending_seq - 1;
3927 net->port = stcb->asoc.port;
3928 net->dscp = stcb->asoc.default_dscp;
3930 net->flowlabel = stcb->asoc.default_flowlabel;
3932 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
3933 net->dest_state |= SCTP_ADDR_NOHB;
3935 net->dest_state &= ~SCTP_ADDR_NOHB;
3937 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DO_NOT_PMTUD)) {
3938 net->dest_state |= SCTP_ADDR_NO_PMTUD;
3940 net->dest_state &= ~SCTP_ADDR_NO_PMTUD;
3942 net->heart_beat_delay = stcb->asoc.heart_beat_delay;
3943 /* Init the timer structure */
3944 SCTP_OS_TIMER_INIT(&net->rxt_timer.timer);
3945 SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer);
3946 SCTP_OS_TIMER_INIT(&net->hb_timer.timer);
3948 /* Now generate a route for this guy */
3950 /* KAME hack: embed scopeid */
3951 if (newaddr->sa_family == AF_INET6) {
3952 struct sockaddr_in6 *sin6;
3954 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3955 (void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone));
3956 sin6->sin6_scope_id = 0;
3959 SCTP_RTALLOC((sctp_route_t *) & net->ro, stcb->asoc.vrf_id);
3961 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) {
3962 /* Get source address */
3963 net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep,
3965 (sctp_route_t *) & net->ro,
3969 /* Now get the interface MTU */
3970 if (net->ro._s_addr && net->ro._s_addr->ifn_p) {
3971 net->mtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p);
3976 rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_rt);
3979 * Start things off to match mtu of
3982 SCTP_SET_MTU_OF_ROUTE(&net->ro._l_addr.sa,
3983 net->ro.ro_rt, net->mtu);
3986 * we take the route mtu over the interface,
3987 * since the route may be leading out the
3988 * loopback, or a different interface.
3994 if (net->mtu == 0) {
3995 switch (newaddr->sa_family) {
3998 net->mtu = SCTP_DEFAULT_MTU;
4011 net->mtu -= (uint32_t) sizeof(struct udphdr);
4013 if (from == SCTP_ALLOC_ASOC) {
4014 stcb->asoc.smallest_mtu = net->mtu;
4016 if (stcb->asoc.smallest_mtu > net->mtu) {
4017 stcb->asoc.smallest_mtu = net->mtu;
4020 if (newaddr->sa_family == AF_INET6) {
4021 struct sockaddr_in6 *sin6;
4023 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
4024 (void)sa6_recoverscope(sin6);
4028 /* JRS - Use the congestion control given in the CC module */
4029 if (stcb->asoc.cc_functions.sctp_set_initial_cc_param != NULL)
4030 (*stcb->asoc.cc_functions.sctp_set_initial_cc_param) (stcb, net);
4033 * CMT: CUC algo - set find_pseudo_cumack to TRUE (1) at beginning
4034 * of assoc (2005/06/27, iyengar@cis.udel.edu)
4036 net->find_pseudo_cumack = 1;
4037 net->find_rtx_pseudo_cumack = 1;
4038 net->src_addr_selected = 0;
4039 /* Choose an initial flowid. */
4040 net->flowid = stcb->asoc.my_vtag ^
4041 ntohs(stcb->rport) ^
4042 ntohs(stcb->sctp_ep->sctp_lport);
4049 netfirst = TAILQ_FIRST(&stcb->asoc.nets);
4050 if (net->ro.ro_rt == NULL) {
4051 /* Since we have no route put it at the back */
4052 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4053 } else if (netfirst == NULL) {
4054 /* We are the first one in the pool. */
4055 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4056 } else if (netfirst->ro.ro_rt == NULL) {
4058 * First one has NO route. Place this one ahead of the first
4061 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4062 } else if (net->ro.ro_rt->rt_ifp != netfirst->ro.ro_rt->rt_ifp) {
4064 * This one has a different interface than the one at the
4065 * top of the list. Place it ahead.
4067 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4070 * Ok we have the same interface as the first one. Move
4071 * forward until we find either a) one with a NULL route...
4072 * insert ahead of that b) one with a different ifp.. insert
4073 * after that. c) end of the list.. insert at the tail.
4075 struct sctp_nets *netlook;
4078 netlook = TAILQ_NEXT(netfirst, sctp_next);
4079 if (netlook == NULL) {
4080 /* End of the list */
4081 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4083 } else if (netlook->ro.ro_rt == NULL) {
4084 /* next one has NO route */
4085 TAILQ_INSERT_BEFORE(netfirst, net, sctp_next);
4087 } else if (netlook->ro.ro_rt->rt_ifp != net->ro.ro_rt->rt_ifp) {
4088 TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook,
4094 } while (netlook != NULL);
4097 /* got to have a primary set */
4098 if (stcb->asoc.primary_destination == 0) {
4099 stcb->asoc.primary_destination = net;
4100 } else if ((stcb->asoc.primary_destination->ro.ro_rt == NULL) &&
4102 ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
4103 /* No route to current primary adopt new primary */
4104 stcb->asoc.primary_destination = net;
4106 /* Validate primary is first */
4107 net = TAILQ_FIRST(&stcb->asoc.nets);
4108 if ((net != stcb->asoc.primary_destination) &&
4109 (stcb->asoc.primary_destination)) {
4111 * first one on the list is NOT the primary sctp_cmpaddr()
4112 * is much more efficient if the primary is the first on the
4115 TAILQ_REMOVE(&stcb->asoc.nets,
4116 stcb->asoc.primary_destination, sctp_next);
4117 TAILQ_INSERT_HEAD(&stcb->asoc.nets,
4118 stcb->asoc.primary_destination, sctp_next);
4125 sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
4128 struct sctpasochead *head;
4129 struct sctp_tcb *lstcb;
4131 SCTP_INP_WLOCK(inp);
4133 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
4135 SCTP_INP_WUNLOCK(inp);
4139 * We don't allow assoc id to be one of SCTP_FUTURE_ASSOC,
4140 * SCTP_CURRENT_ASSOC and SCTP_ALL_ASSOC.
4142 if (inp->sctp_associd_counter <= SCTP_ALL_ASSOC) {
4143 inp->sctp_associd_counter = SCTP_ALL_ASSOC + 1;
4145 id = inp->sctp_associd_counter;
4146 inp->sctp_associd_counter++;
4147 lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t) id, 0);
4151 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
4152 LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash);
4153 stcb->asoc.in_asocid_hash = 1;
4154 SCTP_INP_WUNLOCK(inp);
4159 * allocate an association and add it to the endpoint. The caller must be
4160 * careful to add all additional addresses once they are know right away or
4161 * else the assoc will be may experience a blackout scenario.
4164 sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
4165 int *error, uint32_t override_tag, uint32_t vrf_id,
4169 /* note the p argument is only valid in unbound sockets */
4171 struct sctp_tcb *stcb;
4172 struct sctp_association *asoc;
4173 struct sctpasochead *head;
4178 * Assumption made here: Caller has done a
4179 * sctp_findassociation_ep_addr(ep, addr's); to make sure the
4180 * address does not exist already.
4182 if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) {
4183 /* Hit max assoc, sorry no more */
4184 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4188 if (firstaddr == NULL) {
4189 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4193 SCTP_INP_RLOCK(inp);
4194 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
4195 ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) ||
4196 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4198 * If its in the TCP pool, its NOT allowed to create an
4199 * association. The parent listener needs to call
4200 * sctp_aloc_assoc.. or the one-2-many socket. If a peeled
4201 * off, or connected one does this.. its an error.
4203 SCTP_INP_RUNLOCK(inp);
4204 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4208 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
4209 (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)) {
4210 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) ||
4211 (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED)) {
4212 SCTP_INP_RUNLOCK(inp);
4213 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4218 SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:");
4221 SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr);
4222 switch (firstaddr->sa_family) {
4225 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4226 ntohs(((struct sockaddr_in *)firstaddr)->sin_port));
4231 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4232 ntohs(((struct sockaddr_in6 *)firstaddr)->sin6_port));
4239 SCTPDBG(SCTP_DEBUG_PCB3, "None\n");
4241 #endif /* SCTP_DEBUG */
4242 switch (firstaddr->sa_family) {
4246 struct sockaddr_in *sin;
4248 sin = (struct sockaddr_in *)firstaddr;
4249 if ((ntohs(sin->sin_port) == 0) ||
4250 (sin->sin_addr.s_addr == INADDR_ANY) ||
4251 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
4252 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
4253 /* Invalid address */
4254 SCTP_INP_RUNLOCK(inp);
4255 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4259 rport = sin->sin_port;
4266 struct sockaddr_in6 *sin6;
4268 sin6 = (struct sockaddr_in6 *)firstaddr;
4269 if ((ntohs(sin6->sin6_port) == 0) ||
4270 IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
4271 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
4272 /* Invalid address */
4273 SCTP_INP_RUNLOCK(inp);
4274 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4278 rport = sin6->sin6_port;
4283 /* not supported family type */
4284 SCTP_INP_RUNLOCK(inp);
4285 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4289 SCTP_INP_RUNLOCK(inp);
4290 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4292 * If you have not performed a bind, then we need to do the
4293 * ephemeral bind for you.
4295 if ((err = sctp_inpcb_bind(inp->sctp_socket,
4296 (struct sockaddr *)NULL,
4297 (struct sctp_ifa *)NULL,
4300 /* bind error, probably perm */
4305 stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb);
4307 /* out of memory? */
4308 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
4312 SCTP_INCR_ASOC_COUNT();
4314 bzero(stcb, sizeof(*stcb));
4317 asoc->assoc_id = sctp_aloc_a_assoc_id(inp, stcb);
4318 SCTP_TCB_LOCK_INIT(stcb);
4319 SCTP_TCB_SEND_LOCK_INIT(stcb);
4320 stcb->rport = rport;
4321 /* setup back pointer's */
4322 stcb->sctp_ep = inp;
4323 stcb->sctp_socket = inp->sctp_socket;
4324 if ((err = sctp_init_asoc(inp, stcb, override_tag, vrf_id))) {
4326 SCTP_TCB_LOCK_DESTROY(stcb);
4327 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4328 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4329 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4330 SCTP_DECR_ASOC_COUNT();
4335 SCTP_INP_INFO_WLOCK();
4336 SCTP_INP_WLOCK(inp);
4337 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
4338 /* inpcb freed while alloc going on */
4339 SCTP_TCB_LOCK_DESTROY(stcb);
4340 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4341 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4342 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4343 SCTP_INP_WUNLOCK(inp);
4344 SCTP_INP_INFO_WUNLOCK();
4345 SCTP_DECR_ASOC_COUNT();
4346 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4350 SCTP_TCB_LOCK(stcb);
4352 /* now that my_vtag is set, add it to the hash */
4353 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))];
4354 /* put it in the bucket in the vtag hash of assoc's for the system */
4355 LIST_INSERT_HEAD(head, stcb, sctp_asocs);
4356 SCTP_INP_INFO_WUNLOCK();
4358 if ((err = sctp_add_remote_addr(stcb, firstaddr, NULL, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC))) {
4359 /* failure.. memory error? */
4360 if (asoc->strmout) {
4361 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4362 asoc->strmout = NULL;
4364 if (asoc->mapping_array) {
4365 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4366 asoc->mapping_array = NULL;
4368 if (asoc->nr_mapping_array) {
4369 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4370 asoc->nr_mapping_array = NULL;
4372 SCTP_DECR_ASOC_COUNT();
4373 SCTP_TCB_UNLOCK(stcb);
4374 SCTP_TCB_LOCK_DESTROY(stcb);
4375 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4376 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4377 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4378 SCTP_INP_WUNLOCK(inp);
4379 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4383 /* Init all the timers */
4384 SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer);
4385 SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer);
4386 SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer);
4387 SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer);
4388 SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer);
4389 SCTP_OS_TIMER_INIT(&asoc->delayed_event_timer.timer);
4390 SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer);
4392 LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist);
4393 /* now file the port under the hash as well */
4394 if (inp->sctp_tcbhash != NULL) {
4395 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport,
4396 inp->sctp_hashmark)];
4397 LIST_INSERT_HEAD(head, stcb, sctp_tcbhash);
4399 SCTP_INP_WUNLOCK(inp);
4400 SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", (void *)stcb);
4406 sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
4408 struct sctp_association *asoc;
4412 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4413 if (net == asoc->primary_destination) {
4415 struct sctp_nets *lnet;
4417 lnet = TAILQ_FIRST(&asoc->nets);
4419 * Mobility adaptation Ideally, if deleted destination is
4420 * the primary, it becomes a fast retransmission trigger by
4421 * the subsequent SET PRIMARY. (by micchie)
4423 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
4424 SCTP_MOBILITY_BASE) ||
4425 sctp_is_mobility_feature_on(stcb->sctp_ep,
4426 SCTP_MOBILITY_FASTHANDOFF)) {
4427 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n");
4428 if (asoc->deleted_primary != NULL) {
4429 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n");
4432 asoc->deleted_primary = net;
4433 atomic_add_int(&net->ref_count, 1);
4434 memset(&net->lastsa, 0, sizeof(net->lastsa));
4435 memset(&net->lastsv, 0, sizeof(net->lastsv));
4436 sctp_mobility_feature_on(stcb->sctp_ep,
4437 SCTP_MOBILITY_PRIM_DELETED);
4438 sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED,
4439 stcb->sctp_ep, stcb, NULL);
4442 /* Try to find a confirmed primary */
4443 asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0);
4445 if (net == asoc->last_data_chunk_from) {
4447 asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets);
4449 if (net == asoc->last_control_chunk_from) {
4451 asoc->last_control_chunk_from = NULL;
4453 if (net == stcb->asoc.alternate) {
4454 sctp_free_remote_addr(stcb->asoc.alternate);
4455 stcb->asoc.alternate = NULL;
4457 sctp_free_remote_addr(net);
4461 * remove a remote endpoint address from an association, it will fail if the
4462 * address does not exist.
4465 sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
4468 * Here we need to remove a remote address. This is quite simple, we
4469 * first find it in the list of address for the association
4470 * (tasoc->asoc.nets) and then if it is there, we do a LIST_REMOVE
4471 * on that item. Note we do not allow it to be removed if there are
4472 * no other addresses.
4474 struct sctp_association *asoc;
4475 struct sctp_nets *net, *nnet;
4479 /* locate the address */
4480 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
4481 if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) {
4484 if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr,
4486 /* we found the guy */
4487 if (asoc->numnets < 2) {
4488 /* Must have at LEAST two remote addresses */
4491 sctp_remove_net(stcb, net);
4501 sctp_delete_from_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4503 struct sctpvtaghead *chain;
4504 struct sctp_tagblock *twait_block;
4508 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4509 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4510 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4511 if ((twait_block->vtag_block[i].v_tag == tag) &&
4512 (twait_block->vtag_block[i].lport == lport) &&
4513 (twait_block->vtag_block[i].rport == rport)) {
4514 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4515 twait_block->vtag_block[i].v_tag = 0;
4516 twait_block->vtag_block[i].lport = 0;
4517 twait_block->vtag_block[i].rport = 0;
4528 sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4530 struct sctpvtaghead *chain;
4531 struct sctp_tagblock *twait_block;
4535 SCTP_INP_INFO_WLOCK();
4536 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4537 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4538 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4539 if ((twait_block->vtag_block[i].v_tag == tag) &&
4540 (twait_block->vtag_block[i].lport == lport) &&
4541 (twait_block->vtag_block[i].rport == rport)) {
4549 SCTP_INP_INFO_WUNLOCK();
4555 sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport)
4557 struct sctpvtaghead *chain;
4558 struct sctp_tagblock *twait_block;
4566 (void)SCTP_GETTIME_TIMEVAL(&now);
4567 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4569 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4570 /* Block(s) present, lets find space, and expire on the fly */
4571 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4572 if ((twait_block->vtag_block[i].v_tag == 0) &&
4574 twait_block->vtag_block[i].tv_sec_at_expire =
4576 twait_block->vtag_block[i].v_tag = tag;
4577 twait_block->vtag_block[i].lport = lport;
4578 twait_block->vtag_block[i].rport = rport;
4580 } else if ((twait_block->vtag_block[i].v_tag) &&
4581 ((long)twait_block->vtag_block[i].tv_sec_at_expire < now.tv_sec)) {
4582 /* Audit expires this guy */
4583 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4584 twait_block->vtag_block[i].v_tag = 0;
4585 twait_block->vtag_block[i].lport = 0;
4586 twait_block->vtag_block[i].rport = 0;
4588 /* Reuse it for my new tag */
4589 twait_block->vtag_block[i].tv_sec_at_expire = now.tv_sec + time;
4590 twait_block->vtag_block[i].v_tag = tag;
4591 twait_block->vtag_block[i].lport = lport;
4592 twait_block->vtag_block[i].rport = rport;
4599 * We only do up to the block where we can place our
4605 /* Need to add a new block to chain */
4607 SCTP_MALLOC(twait_block, struct sctp_tagblock *,
4608 sizeof(struct sctp_tagblock), SCTP_M_TIMW);
4609 if (twait_block == NULL) {
4611 panic("Can not alloc tagblock");
4615 memset(twait_block, 0, sizeof(struct sctp_tagblock));
4616 LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock);
4617 twait_block->vtag_block[0].tv_sec_at_expire = now.tv_sec + time;
4618 twait_block->vtag_block[0].v_tag = tag;
4619 twait_block->vtag_block[0].lport = lport;
4620 twait_block->vtag_block[0].rport = rport;
4627 * Free the association after un-hashing the remote port. This
4628 * function ALWAYS returns holding NO LOCK on the stcb. It DOES
4629 * expect that the input to this function IS a locked TCB.
4630 * It will return 0, if it did NOT destroy the association (instead
4631 * it unlocks it. It will return NON-zero if it either destroyed the
4632 * association OR the association is already destroyed.
4635 sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
4638 struct sctp_association *asoc;
4639 struct sctp_nets *net, *nnet;
4640 struct sctp_laddr *laddr, *naddr;
4641 struct sctp_tmit_chunk *chk, *nchk;
4642 struct sctp_asconf_addr *aparam, *naparam;
4643 struct sctp_asconf_ack *aack, *naack;
4644 struct sctp_stream_reset_list *strrst, *nstrrst;
4645 struct sctp_queued_to_read *sq, *nsq;
4646 struct sctp_stream_queue_pending *sp, *nsp;
4647 sctp_sharedkey_t *shared_key, *nshared_key;
4650 /* first, lets purge the entry from the hash table. */
4652 #ifdef SCTP_LOG_CLOSING
4653 sctp_log_closing(inp, stcb, 6);
4655 if (stcb->asoc.state == 0) {
4656 #ifdef SCTP_LOG_CLOSING
4657 sctp_log_closing(inp, NULL, 7);
4659 /* there is no asoc, really TSNH :-0 */
4662 if (stcb->asoc.alternate) {
4663 sctp_free_remote_addr(stcb->asoc.alternate);
4664 stcb->asoc.alternate = NULL;
4667 if (stcb->freed_from_where == 0) {
4668 /* Only record the first place free happened from */
4669 stcb->freed_from_where = from_location;
4674 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4675 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4676 /* nothing around */
4679 so = inp->sctp_socket;
4682 * We used timer based freeing if a reader or writer is in the way.
4683 * So we first check if we are actually being called from a timer,
4684 * if so we abort early if a reader or writer is still in the way.
4686 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
4687 (from_inpcbfree == SCTP_NORMAL_PROC)) {
4689 * is it the timer driving us? if so are the reader/writers
4692 if (stcb->asoc.refcnt) {
4693 /* nope, reader or writer in the way */
4694 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4695 /* no asoc destroyed */
4696 SCTP_TCB_UNLOCK(stcb);
4697 #ifdef SCTP_LOG_CLOSING
4698 sctp_log_closing(inp, stcb, 8);
4703 /* now clean up any other timers */
4704 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4705 asoc->dack_timer.self = NULL;
4706 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4708 * For stream reset we don't blast this unless
4709 * it is a str-reset timer, it might be the
4710 * free-asoc timer which we DON'T want to
4713 if (asoc->strreset_timer.type == SCTP_TIMER_TYPE_STRRESET)
4714 asoc->strreset_timer.self = NULL;
4715 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4716 asoc->asconf_timer.self = NULL;
4717 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4718 asoc->autoclose_timer.self = NULL;
4719 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4720 asoc->shut_guard_timer.self = NULL;
4721 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4722 asoc->delayed_event_timer.self = NULL;
4723 /* Mobility adaptation */
4724 (void)SCTP_OS_TIMER_STOP(&asoc->delete_prim_timer.timer);
4725 asoc->delete_prim_timer.self = NULL;
4726 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4727 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4728 net->rxt_timer.self = NULL;
4729 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4730 net->pmtu_timer.self = NULL;
4731 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4732 net->hb_timer.self = NULL;
4734 /* Now the read queue needs to be cleaned up (only once) */
4735 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) {
4736 stcb->asoc.state |= SCTP_STATE_ABOUT_TO_BE_FREED;
4737 SCTP_INP_READ_LOCK(inp);
4738 TAILQ_FOREACH(sq, &inp->read_queue, next) {
4739 if (sq->stcb == stcb) {
4740 sq->do_not_ref_stcb = 1;
4741 sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
4743 * If there is no end, there never will be
4746 if (sq->end_added == 0) {
4747 /* Held for PD-API clear that. */
4748 sq->pdapi_aborted = 1;
4749 sq->held_length = 0;
4750 if (sctp_stcb_is_feature_on(inp, stcb, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) {
4752 * Need to add a PD-API
4753 * aborted indication.
4754 * Setting the control_pdapi
4755 * assures that it will be
4756 * added right after this
4761 stcb->asoc.control_pdapi = sq;
4762 strseq = (sq->sinfo_stream << 16) | sq->sinfo_ssn;
4763 sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION,
4765 SCTP_PARTIAL_DELIVERY_ABORTED,
4768 stcb->asoc.control_pdapi = NULL;
4771 /* Add an end to wake them */
4775 SCTP_INP_READ_UNLOCK(inp);
4776 if (stcb->block_entry) {
4777 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET);
4778 stcb->block_entry->error = ECONNRESET;
4779 stcb->block_entry = NULL;
4782 if ((stcb->asoc.refcnt) || (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE)) {
4784 * Someone holds a reference OR the socket is unaccepted
4787 if ((stcb->asoc.refcnt) ||
4788 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4789 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4790 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4791 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4793 SCTP_TCB_UNLOCK(stcb);
4794 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4795 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4796 /* nothing around */
4799 /* Wake any reader/writers */
4800 sctp_sorwakeup(inp, so);
4801 sctp_sowwakeup(inp, so);
4803 #ifdef SCTP_LOG_CLOSING
4804 sctp_log_closing(inp, stcb, 9);
4806 /* no asoc destroyed */
4809 #ifdef SCTP_LOG_CLOSING
4810 sctp_log_closing(inp, stcb, 10);
4813 * When I reach here, no others want to kill the assoc yet.. and I
4814 * own the lock. Now its possible an abort comes in when I do the
4815 * lock exchange below to grab all the locks to do the final take
4816 * out. to prevent this we increment the count, which will start a
4817 * timer and blow out above thus assuring us that we hold exclusive
4818 * killing of the asoc. Note that after getting back the TCB lock we
4819 * will go ahead and increment the counter back up and stop any
4820 * timer a passing stranger may have started :-S
4822 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4823 atomic_add_int(&stcb->asoc.refcnt, 1);
4825 SCTP_TCB_UNLOCK(stcb);
4826 SCTP_INP_INFO_WLOCK();
4827 SCTP_INP_WLOCK(inp);
4828 SCTP_TCB_LOCK(stcb);
4830 /* Double check the GONE flag */
4831 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4832 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4833 /* nothing around */
4836 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
4837 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4839 * For TCP type we need special handling when we are
4840 * connected. We also include the peel'ed off ones to.
4842 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4843 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED;
4844 inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED;
4847 if (so->so_rcv.sb_cc == 0) {
4848 so->so_state &= ~(SS_ISCONNECTING |
4849 SS_ISDISCONNECTING |
4853 socantrcvmore_locked(so);
4854 sctp_sowwakeup(inp, so);
4855 sctp_sorwakeup(inp, so);
4861 * Make it invalid too, that way if its about to run it will abort
4864 /* re-increment the lock */
4865 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4866 atomic_add_int(&stcb->asoc.refcnt, -1);
4868 if (stcb->asoc.refcnt) {
4869 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4870 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4871 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4872 SCTP_INP_INFO_WUNLOCK();
4873 SCTP_INP_WUNLOCK(inp);
4875 SCTP_TCB_UNLOCK(stcb);
4879 if (inp->sctp_tcbhash) {
4880 LIST_REMOVE(stcb, sctp_tcbhash);
4882 if (stcb->asoc.in_asocid_hash) {
4883 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4885 /* Now lets remove it from the list of ALL associations in the EP */
4886 LIST_REMOVE(stcb, sctp_tcblist);
4887 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4888 SCTP_INP_INCR_REF(inp);
4889 SCTP_INP_WUNLOCK(inp);
4891 /* pull from vtag hash */
4892 LIST_REMOVE(stcb, sctp_asocs);
4893 sctp_add_vtag_to_timewait(asoc->my_vtag, SCTP_BASE_SYSCTL(sctp_vtag_time_wait),
4894 inp->sctp_lport, stcb->rport);
4897 * Now restop the timers to be sure this is paranoia at is finest!
4899 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4900 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4901 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4902 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4903 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4904 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4905 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4906 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4907 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4908 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4909 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4912 asoc->strreset_timer.type = SCTP_TIMER_TYPE_NONE;
4914 * The chunk lists and such SHOULD be empty but we check them just
4917 /* anything on the wheel needs to be removed */
4918 for (i = 0; i < asoc->streamoutcnt; i++) {
4919 struct sctp_stream_out *outs;
4921 outs = &asoc->strmout[i];
4922 /* now clean up any chunks here */
4923 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
4924 TAILQ_REMOVE(&outs->outqueue, sp, next);
4925 sctp_free_spbufspace(stcb, asoc, sp);
4928 /* Still an open socket - report */
4929 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
4930 0, (void *)sp, SCTP_SO_LOCKED);
4933 sctp_m_freem(sp->data);
4935 sp->tail_mbuf = NULL;
4940 sctp_free_remote_addr(sp->net);
4943 sctp_free_a_strmoq(stcb, sp, SCTP_SO_LOCKED);
4946 /* sa_ignore FREED_MEMORY */
4947 TAILQ_FOREACH_SAFE(strrst, &asoc->resetHead, next_resp, nstrrst) {
4948 TAILQ_REMOVE(&asoc->resetHead, strrst, next_resp);
4949 SCTP_FREE(strrst, SCTP_M_STRESET);
4951 TAILQ_FOREACH_SAFE(sq, &asoc->pending_reply_queue, next, nsq) {
4952 TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
4954 sctp_m_freem(sq->data);
4957 sctp_free_remote_addr(sq->whoFrom);
4960 /* Free the ctl entry */
4961 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
4962 SCTP_DECR_READQ_COUNT();
4963 /* sa_ignore FREED_MEMORY */
4965 TAILQ_FOREACH_SAFE(chk, &asoc->free_chunks, sctp_next, nchk) {
4966 TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next);
4968 sctp_m_freem(chk->data);
4971 if (chk->holds_key_ref)
4972 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4973 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4974 SCTP_DECR_CHK_COUNT();
4975 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1);
4976 asoc->free_chunk_cnt--;
4977 /* sa_ignore FREED_MEMORY */
4979 /* pending send queue SHOULD be empty */
4980 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
4981 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
4982 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
4985 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
4988 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
4991 /* Still a socket? */
4992 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
4993 0, chk, SCTP_SO_LOCKED);
4996 sctp_m_freem(chk->data);
5000 if (chk->holds_key_ref)
5001 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5003 sctp_free_remote_addr(chk->whoTo);
5006 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5007 SCTP_DECR_CHK_COUNT();
5008 /* sa_ignore FREED_MEMORY */
5010 /* sent queue SHOULD be empty */
5011 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
5012 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
5013 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
5014 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
5017 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
5021 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
5024 /* Still a socket? */
5025 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
5026 0, chk, SCTP_SO_LOCKED);
5029 sctp_m_freem(chk->data);
5033 if (chk->holds_key_ref)
5034 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5035 sctp_free_remote_addr(chk->whoTo);
5036 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5037 SCTP_DECR_CHK_COUNT();
5038 /* sa_ignore FREED_MEMORY */
5041 for (i = 0; i < stcb->asoc.streamoutcnt; i++) {
5042 if (stcb->asoc.strmout[i].chunks_on_queues > 0) {
5043 panic("%u chunks left for stream %u.", stcb->asoc.strmout[i].chunks_on_queues, i);
5047 /* control queue MAY not be empty */
5048 TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) {
5049 TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next);
5051 sctp_m_freem(chk->data);
5054 if (chk->holds_key_ref)
5055 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5056 sctp_free_remote_addr(chk->whoTo);
5057 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5058 SCTP_DECR_CHK_COUNT();
5059 /* sa_ignore FREED_MEMORY */
5061 /* ASCONF queue MAY not be empty */
5062 TAILQ_FOREACH_SAFE(chk, &asoc->asconf_send_queue, sctp_next, nchk) {
5063 TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next);
5065 sctp_m_freem(chk->data);
5068 if (chk->holds_key_ref)
5069 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5070 sctp_free_remote_addr(chk->whoTo);
5071 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5072 SCTP_DECR_CHK_COUNT();
5073 /* sa_ignore FREED_MEMORY */
5075 TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) {
5076 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
5078 sctp_m_freem(chk->data);
5081 if (chk->holds_key_ref)
5082 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5083 sctp_free_remote_addr(chk->whoTo);
5084 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5085 SCTP_DECR_CHK_COUNT();
5086 /* sa_ignore FREED_MEMORY */
5089 if (asoc->mapping_array) {
5090 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
5091 asoc->mapping_array = NULL;
5093 if (asoc->nr_mapping_array) {
5094 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
5095 asoc->nr_mapping_array = NULL;
5097 /* the stream outs */
5098 if (asoc->strmout) {
5099 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
5100 asoc->strmout = NULL;
5102 asoc->strm_realoutsize = asoc->streamoutcnt = 0;
5104 struct sctp_queued_to_read *ctl, *nctl;
5106 for (i = 0; i < asoc->streamincnt; i++) {
5107 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[i].inqueue, next, nctl) {
5108 TAILQ_REMOVE(&asoc->strmin[i].inqueue, ctl, next);
5109 sctp_free_remote_addr(ctl->whoFrom);
5111 sctp_m_freem(ctl->data);
5115 * We don't free the address here since all
5116 * the net's were freed above.
5118 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
5119 SCTP_DECR_READQ_COUNT();
5122 SCTP_FREE(asoc->strmin, SCTP_M_STRMI);
5123 asoc->strmin = NULL;
5125 asoc->streamincnt = 0;
5126 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
5128 if (SCTP_BASE_INFO(ipi_count_raddr) == 0) {
5129 panic("no net's left alloc'ed, or list points to itself");
5132 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
5133 sctp_free_remote_addr(net);
5135 LIST_FOREACH_SAFE(laddr, &asoc->sctp_restricted_addrs, sctp_nxt_addr, naddr) {
5136 /* sa_ignore FREED_MEMORY */
5137 sctp_remove_laddr(laddr);
5140 /* pending asconf (address) parameters */
5141 TAILQ_FOREACH_SAFE(aparam, &asoc->asconf_queue, next, naparam) {
5142 /* sa_ignore FREED_MEMORY */
5143 TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
5144 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
5146 TAILQ_FOREACH_SAFE(aack, &asoc->asconf_ack_sent, next, naack) {
5147 /* sa_ignore FREED_MEMORY */
5148 TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
5149 if (aack->data != NULL) {
5150 sctp_m_freem(aack->data);
5152 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
5154 /* clean up auth stuff */
5155 if (asoc->local_hmacs)
5156 sctp_free_hmaclist(asoc->local_hmacs);
5157 if (asoc->peer_hmacs)
5158 sctp_free_hmaclist(asoc->peer_hmacs);
5160 if (asoc->local_auth_chunks)
5161 sctp_free_chunklist(asoc->local_auth_chunks);
5162 if (asoc->peer_auth_chunks)
5163 sctp_free_chunklist(asoc->peer_auth_chunks);
5165 sctp_free_authinfo(&asoc->authinfo);
5167 LIST_FOREACH_SAFE(shared_key, &asoc->shared_keys, next, nshared_key) {
5168 LIST_REMOVE(shared_key, next);
5169 sctp_free_sharedkey(shared_key);
5170 /* sa_ignore FREED_MEMORY */
5173 /* Insert new items here :> */
5175 /* Get rid of LOCK */
5176 SCTP_TCB_UNLOCK(stcb);
5177 SCTP_TCB_LOCK_DESTROY(stcb);
5178 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
5179 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5180 SCTP_INP_INFO_WUNLOCK();
5181 SCTP_INP_RLOCK(inp);
5183 #ifdef SCTP_TRACK_FREED_ASOCS
5184 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5185 /* now clean up the tasoc itself */
5186 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5187 SCTP_DECR_ASOC_COUNT();
5189 LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist);
5192 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5193 SCTP_DECR_ASOC_COUNT();
5195 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5196 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5198 * If its NOT the inp_free calling us AND sctp_close
5199 * as been called, we call back...
5201 SCTP_INP_RUNLOCK(inp);
5203 * This will start the kill timer (if we are the
5204 * last one) since we hold an increment yet. But
5205 * this is the only safe way to do this since
5206 * otherwise if the socket closes at the same time
5207 * we are here we might collide in the cleanup.
5209 sctp_inpcb_free(inp,
5210 SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
5211 SCTP_CALLED_DIRECTLY_NOCMPSET);
5212 SCTP_INP_DECR_REF(inp);
5215 /* The socket is still open. */
5216 SCTP_INP_DECR_REF(inp);
5219 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5220 SCTP_INP_RUNLOCK(inp);
5223 /* destroyed the asoc */
5224 #ifdef SCTP_LOG_CLOSING
5225 sctp_log_closing(inp, NULL, 11);
5233 * determine if a destination is "reachable" based upon the addresses bound
5234 * to the current endpoint (e.g. only v4 or v6 currently bound)
5237 * FIX: if we allow assoc-level bindx(), then this needs to be fixed to use
5238 * assoc level v4/v6 flags, as the assoc *may* not have the same address
5239 * types bound as its endpoint
5242 sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
5244 struct sctp_inpcb *inp;
5248 * No locks here, the TCB, in all cases is already locked and an
5249 * assoc is up. There is either a INP lock by the caller applied (in
5250 * asconf case when deleting an address) or NOT in the HB case,
5251 * however if HB then the INP increment is up and the INP will not
5252 * be removed (on top of the fact that we have a TCB lock). So we
5253 * only want to read the sctp_flags, which is either bound-all or
5254 * not.. no protection needed since once an assoc is up you can't be
5255 * changing your binding.
5257 inp = stcb->sctp_ep;
5258 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5259 /* if bound all, destination is not restricted */
5261 * RRS: Question during lock work: Is this correct? If you
5262 * are bound-all you still might need to obey the V4--V6
5263 * flags??? IMO this bound-all stuff needs to be removed!
5267 /* NOTE: all "scope" checks are done when local addresses are added */
5268 switch (destaddr->sa_family) {
5271 answer = inp->ip_inp.inp.inp_vflag & INP_IPV6;
5276 answer = inp->ip_inp.inp.inp_vflag & INP_IPV4;
5280 /* invalid family, so it's unreachable */
5288 * update the inp_vflags on an endpoint
5291 sctp_update_ep_vflag(struct sctp_inpcb *inp)
5293 struct sctp_laddr *laddr;
5295 /* first clear the flag */
5296 inp->ip_inp.inp.inp_vflag = 0;
5297 /* set the flag based on addresses on the ep list */
5298 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5299 if (laddr->ifa == NULL) {
5300 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
5304 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
5307 switch (laddr->ifa->address.sa.sa_family) {
5310 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5315 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5325 * Add the address to the endpoint local address list There is nothing to be
5326 * done if we are bound to all addresses
5329 sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
5331 struct sctp_laddr *laddr;
5336 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5337 /* You are already bound to all. You have it already */
5341 if (ifa->address.sa.sa_family == AF_INET6) {
5342 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5343 /* Can't bind a non-useable addr. */
5348 /* first, is it already present? */
5349 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5350 if (laddr->ifa == ifa) {
5357 /* Not in the ep list */
5358 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action);
5362 /* update inp_vflag flags */
5363 switch (ifa->address.sa.sa_family) {
5366 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5371 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5383 * select a new (hopefully reachable) destination net (should only be used
5384 * when we deleted an ep addr that is the only usable source address to reach
5385 * the destination net)
5388 sctp_select_primary_destination(struct sctp_tcb *stcb)
5390 struct sctp_nets *net;
5392 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5393 /* for now, we'll just pick the first reachable one we find */
5394 if (net->dest_state & SCTP_ADDR_UNCONFIRMED)
5396 if (sctp_destination_is_reachable(stcb,
5397 (struct sockaddr *)&net->ro._l_addr)) {
5398 /* found a reachable destination */
5399 stcb->asoc.primary_destination = net;
5402 /* I can't there from here! ...we're gonna die shortly... */
5407 * Delete the address from the endpoint local address list There is nothing
5408 * to be done if we are bound to all addresses
5411 sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa)
5413 struct sctp_laddr *laddr;
5417 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5418 /* You are already bound to all. You have it already */
5421 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5422 if (laddr->ifa == ifa) {
5427 if (fnd && (inp->laddr_count < 2)) {
5428 /* can't delete unless there are at LEAST 2 addresses */
5433 * clean up any use of this address go through our
5434 * associations and clear any last_used_address that match
5435 * this one for each assoc, see if a new primary_destination
5438 struct sctp_tcb *stcb;
5440 /* clean up "next_addr_touse" */
5441 if (inp->next_addr_touse == laddr)
5442 /* delete this address */
5443 inp->next_addr_touse = NULL;
5445 /* clean up "last_used_address" */
5446 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5447 struct sctp_nets *net;
5449 SCTP_TCB_LOCK(stcb);
5450 if (stcb->asoc.last_used_address == laddr)
5451 /* delete this address */
5452 stcb->asoc.last_used_address = NULL;
5454 * Now spin through all the nets and purge any ref
5457 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5458 if (net->ro._s_addr &&
5459 (net->ro._s_addr->ifa == laddr->ifa)) {
5460 /* Yep, purge src address selected */
5463 /* delete this address if cached */
5467 net->ro.ro_rt = NULL;
5469 sctp_free_ifa(net->ro._s_addr);
5470 net->ro._s_addr = NULL;
5471 net->src_addr_selected = 0;
5474 SCTP_TCB_UNLOCK(stcb);
5475 } /* for each tcb */
5476 /* remove it from the ep list */
5477 sctp_remove_laddr(laddr);
5479 /* update inp_vflag flags */
5480 sctp_update_ep_vflag(inp);
5486 * Add the address to the TCB local address restricted list.
5487 * This is a "pending" address list (eg. addresses waiting for an
5488 * ASCONF-ACK response) and cannot be used as a valid source address.
5491 sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5493 struct sctp_laddr *laddr;
5494 struct sctpladdr *list;
5497 * Assumes TCB is locked.. and possibly the INP. May need to
5498 * confirm/fix that if we need it and is not the case.
5500 list = &stcb->asoc.sctp_restricted_addrs;
5503 if (ifa->address.sa.sa_family == AF_INET6) {
5504 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5505 /* Can't bind a non-existent addr. */
5510 /* does the address already exist? */
5511 LIST_FOREACH(laddr, list, sctp_nxt_addr) {
5512 if (laddr->ifa == ifa) {
5517 /* add to the list */
5518 (void)sctp_insert_laddr(list, ifa, 0);
5523 * insert an laddr entry with the given ifa for the desired list
5526 sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
5528 struct sctp_laddr *laddr;
5530 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
5531 if (laddr == NULL) {
5532 /* out of memory? */
5533 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
5536 SCTP_INCR_LADDR_COUNT();
5537 bzero(laddr, sizeof(*laddr));
5538 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
5540 laddr->action = act;
5541 atomic_add_int(&ifa->refcount, 1);
5543 LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr);
5549 * Remove an laddr entry from the local address list (on an assoc)
5552 sctp_remove_laddr(struct sctp_laddr *laddr)
5555 /* remove from the list */
5556 LIST_REMOVE(laddr, sctp_nxt_addr);
5557 sctp_free_ifa(laddr->ifa);
5558 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr);
5559 SCTP_DECR_LADDR_COUNT();
5563 * Remove a local address from the TCB local address restricted list
5566 sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5568 struct sctp_inpcb *inp;
5569 struct sctp_laddr *laddr;
5572 * This is called by asconf work. It is assumed that a) The TCB is
5573 * locked and b) The INP is locked. This is true in as much as I can
5574 * trace through the entry asconf code where I did these locks.
5575 * Again, the ASCONF code is a bit different in that it does lock
5576 * the INP during its work often times. This must be since we don't
5577 * want other proc's looking up things while what they are looking
5578 * up is changing :-D
5581 inp = stcb->sctp_ep;
5582 /* if subset bound and don't allow ASCONF's, can't delete last */
5583 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
5584 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
5585 if (stcb->sctp_ep->laddr_count < 2) {
5586 /* can't delete last address */
5590 LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
5591 /* remove the address if it exists */
5592 if (laddr->ifa == NULL)
5594 if (laddr->ifa == ifa) {
5595 sctp_remove_laddr(laddr);
5600 /* address not found! */
5605 * Temporarily remove for __APPLE__ until we use the Tiger equivalents
5608 static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;
5609 static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR;
5613 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5614 struct sctp_mcore_ctrl *sctp_mcore_workers = NULL;
5615 int *sctp_cpuarry = NULL;
5617 sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use)
5619 /* Queue a packet to a processor for the specified core */
5620 struct sctp_mcore_queue *qent;
5621 struct sctp_mcore_ctrl *wkq;
5624 if (sctp_mcore_workers == NULL) {
5625 /* Something went way bad during setup */
5626 sctp_input_with_port(m, off, 0);
5629 SCTP_MALLOC(qent, struct sctp_mcore_queue *,
5630 (sizeof(struct sctp_mcore_queue)),
5633 /* This is trouble */
5634 sctp_input_with_port(m, off, 0);
5641 wkq = &sctp_mcore_workers[cpu_to_use];
5642 SCTP_MCORE_QLOCK(wkq);
5644 TAILQ_INSERT_TAIL(&wkq->que, qent, next);
5645 if (wkq->running == 0) {
5648 SCTP_MCORE_QUNLOCK(wkq);
5650 wakeup(&wkq->running);
5655 sctp_mcore_thread(void *arg)
5658 struct sctp_mcore_ctrl *wkq;
5659 struct sctp_mcore_queue *qent;
5661 wkq = (struct sctp_mcore_ctrl *)arg;
5665 /* Wait for first tickle */
5666 SCTP_MCORE_LOCK(wkq);
5668 msleep(&wkq->running,
5670 0, "wait for pkt", 0);
5671 SCTP_MCORE_UNLOCK(wkq);
5673 /* Bind to our cpu */
5674 thread_lock(curthread);
5675 sched_bind(curthread, wkq->cpuid);
5676 thread_unlock(curthread);
5678 /* Now lets start working */
5679 SCTP_MCORE_LOCK(wkq);
5680 /* Now grab lock and go */
5682 SCTP_MCORE_QLOCK(wkq);
5685 qent = TAILQ_FIRST(&wkq->que);
5687 TAILQ_REMOVE(&wkq->que, qent, next);
5688 SCTP_MCORE_QUNLOCK(wkq);
5689 CURVNET_SET(qent->vn);
5693 SCTP_FREE(qent, SCTP_M_MCORE);
5695 sctp_input_with_port(m, off, 0);
5697 SCTP_PRINTF("V6 not yet supported\n");
5701 SCTP_MCORE_QLOCK(wkq);
5704 if (!TAILQ_EMPTY(&wkq->que)) {
5707 SCTP_MCORE_QUNLOCK(wkq);
5708 msleep(&wkq->running,
5710 0, "wait for pkt", 0);
5715 sctp_startup_mcore_threads(void)
5722 if (sctp_mcore_workers != NULL) {
5724 * Already been here in some previous vnet?
5728 SCTP_MALLOC(sctp_mcore_workers, struct sctp_mcore_ctrl *,
5729 ((mp_maxid + 1) * sizeof(struct sctp_mcore_ctrl)),
5731 if (sctp_mcore_workers == NULL) {
5735 memset(sctp_mcore_workers, 0, ((mp_maxid + 1) *
5736 sizeof(struct sctp_mcore_ctrl)));
5737 /* Init the structures */
5738 for (i = 0; i <= mp_maxid; i++) {
5739 TAILQ_INIT(&sctp_mcore_workers[i].que);
5740 SCTP_MCORE_LOCK_INIT(&sctp_mcore_workers[i]);
5741 SCTP_MCORE_QLOCK_INIT(&sctp_mcore_workers[i]);
5742 sctp_mcore_workers[i].cpuid = i;
5744 if (sctp_cpuarry == NULL) {
5745 SCTP_MALLOC(sctp_cpuarry, int *,
5746 (mp_ncpus * sizeof(int)),
5750 sctp_cpuarry[i] = cpu;
5754 /* Now start them all */
5756 (void)kproc_create(sctp_mcore_thread,
5757 (void *)&sctp_mcore_workers[cpu],
5758 &sctp_mcore_workers[cpu].thread_proc,
5772 * SCTP initialization for the PCB structures should be called by
5773 * the sctp_init() funciton.
5778 if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) {
5779 /* error I was called twice */
5782 SCTP_BASE_VAR(sctp_pcb_initialized) = 1;
5784 #if defined(SCTP_LOCAL_TRACE_BUF)
5785 bzero(&SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));
5787 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5788 SCTP_MALLOC(SCTP_BASE_STATS, struct sctpstat *,
5789 ((mp_maxid + 1) * sizeof(struct sctpstat)),
5792 (void)SCTP_GETTIME_TIMEVAL(&tv);
5793 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5794 bzero(SCTP_BASE_STATS, (sizeof(struct sctpstat) * (mp_maxid + 1)));
5795 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t) tv.tv_sec;
5796 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t) tv.tv_usec;
5798 bzero(&SCTP_BASE_STATS, sizeof(struct sctpstat));
5799 SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t) tv.tv_sec;
5800 SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t) tv.tv_usec;
5802 /* init the empty list of (All) Endpoints */
5803 LIST_INIT(&SCTP_BASE_INFO(listhead));
5806 /* init the hash table of endpoints */
5807 TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize));
5808 TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize));
5809 TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale));
5810 SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31),
5811 &SCTP_BASE_INFO(hashasocmark));
5812 SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5813 &SCTP_BASE_INFO(hashmark));
5814 SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5815 &SCTP_BASE_INFO(hashtcpmark));
5816 SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize);
5819 SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH,
5820 &SCTP_BASE_INFO(hashvrfmark));
5822 SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE,
5823 &SCTP_BASE_INFO(vrf_ifn_hashmark));
5824 /* init the zones */
5826 * FIX ME: Should check for NULL returns, but if it does fail we are
5827 * doomed to panic anyways... add later maybe.
5829 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep",
5830 sizeof(struct sctp_inpcb), maxsockets);
5832 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc",
5833 sizeof(struct sctp_tcb), sctp_max_number_of_assoc);
5835 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr",
5836 sizeof(struct sctp_laddr),
5837 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5839 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr",
5840 sizeof(struct sctp_nets),
5841 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5843 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk",
5844 sizeof(struct sctp_tmit_chunk),
5845 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5847 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq",
5848 sizeof(struct sctp_queued_to_read),
5849 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5851 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out",
5852 sizeof(struct sctp_stream_queue_pending),
5853 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5855 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf",
5856 sizeof(struct sctp_asconf),
5857 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5859 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack",
5860 sizeof(struct sctp_asconf_ack),
5861 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5864 /* Master Lock INIT for info structure */
5865 SCTP_INP_INFO_LOCK_INIT();
5866 SCTP_STATLOG_INIT_LOCK();
5868 SCTP_IPI_COUNT_INIT();
5869 SCTP_IPI_ADDR_INIT();
5870 #ifdef SCTP_PACKET_LOGGING
5871 SCTP_IP_PKTLOG_INIT();
5873 LIST_INIT(&SCTP_BASE_INFO(addr_wq));
5875 SCTP_WQ_ADDR_INIT();
5876 /* not sure if we need all the counts */
5877 SCTP_BASE_INFO(ipi_count_ep) = 0;
5878 /* assoc/tcb zone info */
5879 SCTP_BASE_INFO(ipi_count_asoc) = 0;
5880 /* local addrlist zone info */
5881 SCTP_BASE_INFO(ipi_count_laddr) = 0;
5882 /* remote addrlist zone info */
5883 SCTP_BASE_INFO(ipi_count_raddr) = 0;
5885 SCTP_BASE_INFO(ipi_count_chunk) = 0;
5887 /* socket queue zone info */
5888 SCTP_BASE_INFO(ipi_count_readq) = 0;
5890 /* stream out queue cont */
5891 SCTP_BASE_INFO(ipi_count_strmoq) = 0;
5893 SCTP_BASE_INFO(ipi_free_strmoq) = 0;
5894 SCTP_BASE_INFO(ipi_free_chunks) = 0;
5896 SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer));
5898 /* Init the TIMEWAIT list */
5899 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5900 LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]);
5902 sctp_startup_iterator();
5904 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5905 sctp_startup_mcore_threads();
5909 * INIT the default VRF which for BSD is the only one, other O/S's
5910 * may have more. But initially they must start with one and then
5911 * add the VRF's as addresses are added.
5913 sctp_init_vrf_list(SCTP_DEFAULT_VRF);
5917 * Assumes that the SCTP_BASE_INFO() lock is NOT held.
5920 sctp_pcb_finish(void)
5922 struct sctp_vrflist *vrf_bucket;
5923 struct sctp_vrf *vrf, *nvrf;
5924 struct sctp_ifn *ifn, *nifn;
5925 struct sctp_ifa *ifa, *nifa;
5926 struct sctpvtaghead *chain;
5927 struct sctp_tagblock *twait_block, *prev_twait_block;
5928 struct sctp_laddr *wi, *nwi;
5930 struct sctp_iterator *it, *nit;
5933 * In FreeBSD the iterator thread never exits but we do clean up.
5934 * The only way FreeBSD reaches here is if we have VRF's but we
5935 * still add the ifdef to make it compile on old versions.
5937 SCTP_IPI_ITERATOR_WQ_LOCK();
5938 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
5939 if (it->vn != curvnet) {
5942 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
5943 if (it->function_atend != NULL) {
5944 (*it->function_atend) (it->pointer, it->val);
5946 SCTP_FREE(it, SCTP_M_ITER);
5948 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5949 SCTP_ITERATOR_LOCK();
5950 if ((sctp_it_ctl.cur_it) &&
5951 (sctp_it_ctl.cur_it->vn == curvnet)) {
5952 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
5954 SCTP_ITERATOR_UNLOCK();
5955 SCTP_OS_TIMER_STOP(&SCTP_BASE_INFO(addr_wq_timer.timer));
5956 SCTP_WQ_ADDR_LOCK();
5957 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
5958 LIST_REMOVE(wi, sctp_nxt_addr);
5959 SCTP_DECR_LADDR_COUNT();
5960 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi);
5962 SCTP_WQ_ADDR_UNLOCK();
5965 * free the vrf/ifn/ifa lists and hashes (be sure address monitor is
5968 vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))];
5969 LIST_FOREACH_SAFE(vrf, vrf_bucket, next_vrf, nvrf) {
5970 LIST_FOREACH_SAFE(ifn, &vrf->ifnlist, next_ifn, nifn) {
5971 LIST_FOREACH_SAFE(ifa, &ifn->ifalist, next_ifa, nifa) {
5973 LIST_REMOVE(ifa, next_bucket);
5974 LIST_REMOVE(ifa, next_ifa);
5975 SCTP_FREE(ifa, SCTP_M_IFA);
5978 LIST_REMOVE(ifn, next_bucket);
5979 LIST_REMOVE(ifn, next_ifn);
5980 SCTP_FREE(ifn, SCTP_M_IFN);
5982 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
5984 LIST_REMOVE(vrf, next_vrf);
5985 SCTP_FREE(vrf, SCTP_M_VRF);
5987 /* free the vrf hashes */
5988 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark));
5989 SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark));
5992 * free the TIMEWAIT list elements malloc'd in the function
5993 * sctp_add_vtag_to_timewait()...
5995 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5996 chain = &SCTP_BASE_INFO(vtag_timewait)[i];
5997 if (!LIST_EMPTY(chain)) {
5998 prev_twait_block = NULL;
5999 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6000 if (prev_twait_block) {
6001 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
6003 prev_twait_block = twait_block;
6005 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
6009 /* free the locks and mutexes */
6010 #ifdef SCTP_PACKET_LOGGING
6011 SCTP_IP_PKTLOG_DESTROY();
6013 SCTP_IPI_ADDR_DESTROY();
6014 SCTP_STATLOG_DESTROY();
6015 SCTP_INP_INFO_LOCK_DESTROY();
6017 SCTP_WQ_ADDR_DESTROY();
6019 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep));
6020 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc));
6021 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr));
6022 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net));
6023 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk));
6024 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq));
6025 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq));
6026 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf));
6027 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack));
6028 /* Get rid of other stuff to */
6029 if (SCTP_BASE_INFO(sctp_asochash) != NULL)
6030 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark));
6031 if (SCTP_BASE_INFO(sctp_ephash) != NULL)
6032 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark));
6033 if (SCTP_BASE_INFO(sctp_tcpephash) != NULL)
6034 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark));
6035 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
6036 SCTP_FREE(SCTP_BASE_STATS, SCTP_M_MCORE);
6042 sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m,
6043 int offset, int limit,
6044 struct sockaddr *src, struct sockaddr *dst,
6045 struct sockaddr *altsa)
6048 * grub through the INIT pulling addresses and loading them to the
6049 * nets structure in the asoc. The from address in the mbuf should
6050 * also be loaded (if it is not already). This routine can be called
6051 * with either INIT or INIT-ACK's as long as the m points to the IP
6052 * packet and the offset points to the beginning of the parameters.
6054 struct sctp_inpcb *inp;
6055 struct sctp_nets *net, *nnet, *net_tmp;
6056 struct sctp_paramhdr *phdr, parm_buf;
6057 struct sctp_tcb *stcb_tmp;
6058 uint16_t ptype, plen;
6059 struct sockaddr *sa;
6060 uint8_t random_store[SCTP_PARAM_BUFFER_SIZE];
6061 struct sctp_auth_random *p_random = NULL;
6062 uint16_t random_len = 0;
6063 uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE];
6064 struct sctp_auth_hmac_algo *hmacs = NULL;
6065 uint16_t hmacs_len = 0;
6066 uint8_t saw_asconf = 0;
6067 uint8_t saw_asconf_ack = 0;
6068 uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE];
6069 struct sctp_auth_chunk_list *chunks = NULL;
6070 uint16_t num_chunks = 0;
6071 sctp_key_t *new_key;
6073 int got_random = 0, got_hmacs = 0, got_chklist = 0;
6074 uint8_t ecn_allowed;
6077 struct sockaddr_in sin;
6081 struct sockaddr_in6 sin6;
6085 /* First get the destination address setup too. */
6087 memset(&sin, 0, sizeof(sin));
6088 sin.sin_family = AF_INET;
6089 sin.sin_len = sizeof(sin);
6090 sin.sin_port = stcb->rport;
6093 memset(&sin6, 0, sizeof(sin6));
6094 sin6.sin6_family = AF_INET6;
6095 sin6.sin6_len = sizeof(struct sockaddr_in6);
6096 sin6.sin6_port = stcb->rport;
6103 /* Turn off ECN until we get through all params */
6105 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
6106 /* mark all addresses that we have currently on the list */
6107 net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC;
6109 /* does the source address already exist? if so skip it */
6110 inp = stcb->sctp_ep;
6111 atomic_add_int(&stcb->asoc.refcnt, 1);
6112 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, dst, stcb);
6113 atomic_add_int(&stcb->asoc.refcnt, -1);
6115 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) {
6116 /* we must add the source address */
6117 /* no scope set here since we have a tcb already. */
6118 switch (sa->sa_family) {
6121 if (stcb->asoc.scope.ipv4_addr_legal) {
6122 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) {
6130 if (stcb->asoc.scope.ipv6_addr_legal) {
6131 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
6141 if (net_tmp != NULL && stcb_tmp == stcb) {
6142 net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC;
6143 } else if (stcb_tmp != stcb) {
6144 /* It belongs to another association? */
6146 SCTP_TCB_UNLOCK(stcb_tmp);
6150 if (stcb->asoc.state == 0) {
6151 /* the assoc was freed? */
6155 * peer must explicitly turn this on. This may have been initialized
6156 * to be "on" in order to allow local addr changes while INIT's are
6159 stcb->asoc.peer_supports_asconf = 0;
6160 /* now we must go through each of the params. */
6161 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
6163 ptype = ntohs(phdr->param_type);
6164 plen = ntohs(phdr->param_length);
6166 * SCTP_PRINTF("ptype => %0x, plen => %d\n",
6167 * (uint32_t)ptype, (int)plen);
6169 if (offset + plen > limit) {
6176 if (ptype == SCTP_IPV4_ADDRESS) {
6177 if (stcb->asoc.scope.ipv4_addr_legal) {
6178 struct sctp_ipv4addr_param *p4, p4_buf;
6180 /* ok get the v4 address and check/add */
6181 phdr = sctp_get_next_param(m, offset,
6182 (struct sctp_paramhdr *)&p4_buf,
6184 if (plen != sizeof(struct sctp_ipv4addr_param) ||
6188 p4 = (struct sctp_ipv4addr_param *)phdr;
6189 sin.sin_addr.s_addr = p4->addr;
6190 if (IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) {
6191 /* Skip multi-cast addresses */
6194 if ((sin.sin_addr.s_addr == INADDR_BROADCAST) ||
6195 (sin.sin_addr.s_addr == INADDR_ANY)) {
6198 sa = (struct sockaddr *)&sin;
6199 inp = stcb->sctp_ep;
6200 atomic_add_int(&stcb->asoc.refcnt, 1);
6201 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6203 atomic_add_int(&stcb->asoc.refcnt, -1);
6205 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) ||
6207 /* we must add the source address */
6209 * no scope set since we have a tcb
6214 * we must validate the state again
6218 if (stcb->asoc.state == 0) {
6219 /* the assoc was freed? */
6222 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) {
6225 } else if (stcb_tmp == stcb) {
6226 if (stcb->asoc.state == 0) {
6227 /* the assoc was freed? */
6233 ~SCTP_ADDR_NOT_IN_ASSOC;
6237 * strange, address is in another
6238 * assoc? straighten out locks.
6241 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6246 sctp_abort_an_association(stcb_tmp->sctp_ep,
6247 stcb_tmp, NULL, SCTP_SO_NOT_LOCKED);
6250 SCTP_TCB_UNLOCK(stcb_tmp);
6252 if (stcb->asoc.state == 0) {
6253 /* the assoc was freed? */
6262 if (ptype == SCTP_IPV6_ADDRESS) {
6263 if (stcb->asoc.scope.ipv6_addr_legal) {
6264 /* ok get the v6 address and check/add */
6265 struct sctp_ipv6addr_param *p6, p6_buf;
6267 phdr = sctp_get_next_param(m, offset,
6268 (struct sctp_paramhdr *)&p6_buf,
6270 if (plen != sizeof(struct sctp_ipv6addr_param) ||
6274 p6 = (struct sctp_ipv6addr_param *)phdr;
6275 memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
6277 if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) {
6278 /* Skip multi-cast addresses */
6281 if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) {
6283 * Link local make no sense without
6288 sa = (struct sockaddr *)&sin6;
6289 inp = stcb->sctp_ep;
6290 atomic_add_int(&stcb->asoc.refcnt, 1);
6291 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6293 atomic_add_int(&stcb->asoc.refcnt, -1);
6294 if (stcb_tmp == NULL &&
6295 (inp == stcb->sctp_ep || inp == NULL)) {
6297 * we must validate the state again
6301 if (stcb->asoc.state == 0) {
6302 /* the assoc was freed? */
6306 * we must add the address, no scope
6309 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) {
6312 } else if (stcb_tmp == stcb) {
6314 * we must validate the state again
6317 if (stcb->asoc.state == 0) {
6318 /* the assoc was freed? */
6324 ~SCTP_ADDR_NOT_IN_ASSOC;
6328 * strange, address is in another
6329 * assoc? straighten out locks.
6332 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6337 sctp_abort_an_association(stcb_tmp->sctp_ep,
6338 stcb_tmp, NULL, SCTP_SO_NOT_LOCKED);
6341 SCTP_TCB_UNLOCK(stcb_tmp);
6343 if (stcb->asoc.state == 0) {
6344 /* the assoc was freed? */
6352 if (ptype == SCTP_ECN_CAPABLE) {
6354 } else if (ptype == SCTP_ULP_ADAPTATION) {
6355 if (stcb->asoc.state != SCTP_STATE_OPEN) {
6356 struct sctp_adaptation_layer_indication ai,
6359 phdr = sctp_get_next_param(m, offset,
6360 (struct sctp_paramhdr *)&ai, sizeof(ai));
6361 aip = (struct sctp_adaptation_layer_indication *)phdr;
6363 stcb->asoc.peers_adaptation = ntohl(aip->indication);
6364 stcb->asoc.adaptation_needed = 1;
6367 } else if (ptype == SCTP_SET_PRIM_ADDR) {
6368 struct sctp_asconf_addr_param lstore, *fee;
6370 struct sockaddr *lsa = NULL;
6373 struct sctp_asconf_addrv4_param *fii;
6377 stcb->asoc.peer_supports_asconf = 1;
6378 if (plen > sizeof(lstore)) {
6381 phdr = sctp_get_next_param(m, offset,
6382 (struct sctp_paramhdr *)&lstore,
6383 min(plen, sizeof(lstore)));
6387 fee = (struct sctp_asconf_addr_param *)phdr;
6388 lptype = ntohs(fee->addrp.ph.param_type);
6391 case SCTP_IPV4_ADDRESS:
6393 sizeof(struct sctp_asconf_addrv4_param)) {
6394 SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n",
6395 (int)sizeof(struct sctp_asconf_addrv4_param),
6398 fii = (struct sctp_asconf_addrv4_param *)fee;
6399 sin.sin_addr.s_addr = fii->addrp.addr;
6400 lsa = (struct sockaddr *)&sin;
6405 case SCTP_IPV6_ADDRESS:
6407 sizeof(struct sctp_asconf_addr_param)) {
6408 SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n",
6409 (int)sizeof(struct sctp_asconf_addr_param),
6412 memcpy(sin6.sin6_addr.s6_addr,
6414 sizeof(fee->addrp.addr));
6415 lsa = (struct sockaddr *)&sin6;
6423 (void)sctp_set_primary_addr(stcb, sa, NULL);
6425 } else if (ptype == SCTP_HAS_NAT_SUPPORT) {
6426 stcb->asoc.peer_supports_nat = 1;
6427 } else if (ptype == SCTP_PRSCTP_SUPPORTED) {
6428 /* Peer supports pr-sctp */
6429 stcb->asoc.peer_supports_prsctp = 1;
6430 } else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) {
6431 /* A supported extension chunk */
6432 struct sctp_supported_chunk_types_param *pr_supported;
6433 uint8_t local_store[SCTP_PARAM_BUFFER_SIZE];
6436 phdr = sctp_get_next_param(m, offset,
6437 (struct sctp_paramhdr *)&local_store, min(sizeof(local_store), plen));
6441 stcb->asoc.peer_supports_asconf = 0;
6442 stcb->asoc.peer_supports_prsctp = 0;
6443 stcb->asoc.peer_supports_pktdrop = 0;
6444 stcb->asoc.peer_supports_strreset = 0;
6445 stcb->asoc.peer_supports_nr_sack = 0;
6446 stcb->asoc.peer_supports_auth = 0;
6447 pr_supported = (struct sctp_supported_chunk_types_param *)phdr;
6448 num_ent = plen - sizeof(struct sctp_paramhdr);
6449 for (i = 0; i < num_ent; i++) {
6450 switch (pr_supported->chunk_types[i]) {
6452 case SCTP_ASCONF_ACK:
6453 stcb->asoc.peer_supports_asconf = 1;
6455 case SCTP_FORWARD_CUM_TSN:
6456 stcb->asoc.peer_supports_prsctp = 1;
6458 case SCTP_PACKET_DROPPED:
6459 stcb->asoc.peer_supports_pktdrop = 1;
6461 case SCTP_NR_SELECTIVE_ACK:
6462 stcb->asoc.peer_supports_nr_sack = 1;
6464 case SCTP_STREAM_RESET:
6465 stcb->asoc.peer_supports_strreset = 1;
6467 case SCTP_AUTHENTICATION:
6468 stcb->asoc.peer_supports_auth = 1;
6471 /* one I have not learned yet */
6476 } else if (ptype == SCTP_RANDOM) {
6477 if (plen > sizeof(random_store))
6480 /* already processed a RANDOM */
6483 phdr = sctp_get_next_param(m, offset,
6484 (struct sctp_paramhdr *)random_store,
6485 min(sizeof(random_store), plen));
6488 p_random = (struct sctp_auth_random *)phdr;
6489 random_len = plen - sizeof(*p_random);
6490 /* enforce the random length */
6491 if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) {
6492 SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n");
6496 } else if (ptype == SCTP_HMAC_LIST) {
6500 if (plen > sizeof(hmacs_store))
6503 /* already processed a HMAC list */
6506 phdr = sctp_get_next_param(m, offset,
6507 (struct sctp_paramhdr *)hmacs_store,
6508 min(plen, sizeof(hmacs_store)));
6511 hmacs = (struct sctp_auth_hmac_algo *)phdr;
6512 hmacs_len = plen - sizeof(*hmacs);
6513 num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]);
6514 /* validate the hmac list */
6515 if (sctp_verify_hmac_param(hmacs, num_hmacs)) {
6518 if (stcb->asoc.peer_hmacs != NULL)
6519 sctp_free_hmaclist(stcb->asoc.peer_hmacs);
6520 stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs);
6521 if (stcb->asoc.peer_hmacs != NULL) {
6522 for (i = 0; i < num_hmacs; i++) {
6523 (void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs,
6524 ntohs(hmacs->hmac_ids[i]));
6528 } else if (ptype == SCTP_CHUNK_LIST) {
6531 if (plen > sizeof(chunks_store))
6534 /* already processed a Chunks list */
6537 phdr = sctp_get_next_param(m, offset,
6538 (struct sctp_paramhdr *)chunks_store,
6539 min(plen, sizeof(chunks_store)));
6542 chunks = (struct sctp_auth_chunk_list *)phdr;
6543 num_chunks = plen - sizeof(*chunks);
6544 if (stcb->asoc.peer_auth_chunks != NULL)
6545 sctp_clear_chunklist(stcb->asoc.peer_auth_chunks);
6547 stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist();
6548 for (i = 0; i < num_chunks; i++) {
6549 (void)sctp_auth_add_chunk(chunks->chunk_types[i],
6550 stcb->asoc.peer_auth_chunks);
6551 /* record asconf/asconf-ack if listed */
6552 if (chunks->chunk_types[i] == SCTP_ASCONF)
6554 if (chunks->chunk_types[i] == SCTP_ASCONF_ACK)
6559 } else if ((ptype == SCTP_HEARTBEAT_INFO) ||
6560 (ptype == SCTP_STATE_COOKIE) ||
6561 (ptype == SCTP_UNRECOG_PARAM) ||
6562 (ptype == SCTP_COOKIE_PRESERVE) ||
6563 (ptype == SCTP_SUPPORTED_ADDRTYPE) ||
6564 (ptype == SCTP_ADD_IP_ADDRESS) ||
6565 (ptype == SCTP_DEL_IP_ADDRESS) ||
6566 (ptype == SCTP_ERROR_CAUSE_IND) ||
6567 (ptype == SCTP_SUCCESS_REPORT)) {
6570 if ((ptype & 0x8000) == 0x0000) {
6572 * must stop processing the rest of the
6573 * param's. Any report bits were handled
6575 * sctp_arethere_unrecognized_parameters()
6576 * when the INIT or INIT-ACK was first seen.
6583 offset += SCTP_SIZE32(plen);
6584 if (offset >= limit) {
6587 phdr = sctp_get_next_param(m, offset, &parm_buf,
6590 /* Now check to see if we need to purge any addresses */
6591 TAILQ_FOREACH_SAFE(net, &stcb->asoc.nets, sctp_next, nnet) {
6592 if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) ==
6593 SCTP_ADDR_NOT_IN_ASSOC) {
6594 /* This address has been removed from the asoc */
6595 /* remove and free it */
6596 stcb->asoc.numnets--;
6597 TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next);
6598 sctp_free_remote_addr(net);
6599 if (net == stcb->asoc.primary_destination) {
6600 stcb->asoc.primary_destination = NULL;
6601 sctp_select_primary_destination(stcb);
6605 if (ecn_allowed == 0) {
6606 stcb->asoc.ecn_allowed = 0;
6608 /* validate authentication required parameters */
6609 if (got_random && got_hmacs) {
6610 stcb->asoc.peer_supports_auth = 1;
6612 stcb->asoc.peer_supports_auth = 0;
6614 if (!stcb->asoc.peer_supports_auth && got_chklist) {
6615 /* peer does not support auth but sent a chunks list? */
6618 if (!SCTP_BASE_SYSCTL(sctp_asconf_auth_nochk) && stcb->asoc.peer_supports_asconf &&
6619 !stcb->asoc.peer_supports_auth) {
6620 /* peer supports asconf but not auth? */
6622 } else if ((stcb->asoc.peer_supports_asconf) && (stcb->asoc.peer_supports_auth) &&
6623 ((saw_asconf == 0) || (saw_asconf_ack == 0))) {
6626 /* concatenate the full random key */
6627 keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len;
6628 if (chunks != NULL) {
6629 keylen += sizeof(*chunks) + num_chunks;
6631 new_key = sctp_alloc_key(keylen);
6632 if (new_key != NULL) {
6633 /* copy in the RANDOM */
6634 if (p_random != NULL) {
6635 keylen = sizeof(*p_random) + random_len;
6636 bcopy(p_random, new_key->key, keylen);
6638 /* append in the AUTH chunks */
6639 if (chunks != NULL) {
6640 bcopy(chunks, new_key->key + keylen,
6641 sizeof(*chunks) + num_chunks);
6642 keylen += sizeof(*chunks) + num_chunks;
6644 /* append in the HMACs */
6645 if (hmacs != NULL) {
6646 bcopy(hmacs, new_key->key + keylen,
6647 sizeof(*hmacs) + hmacs_len);
6650 /* failed to get memory for the key */
6653 if (stcb->asoc.authinfo.peer_random != NULL)
6654 sctp_free_key(stcb->asoc.authinfo.peer_random);
6655 stcb->asoc.authinfo.peer_random = new_key;
6656 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid);
6657 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid);
6663 sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa,
6664 struct sctp_nets *net)
6666 /* make sure the requested primary address exists in the assoc */
6667 if (net == NULL && sa)
6668 net = sctp_findnet(stcb, sa);
6671 /* didn't find the requested primary address! */
6674 /* set the primary address */
6675 if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
6676 /* Must be confirmed, so queue to set */
6677 net->dest_state |= SCTP_ADDR_REQ_PRIMARY;
6680 stcb->asoc.primary_destination = net;
6681 if (!(net->dest_state & SCTP_ADDR_PF) && (stcb->asoc.alternate)) {
6682 sctp_free_remote_addr(stcb->asoc.alternate);
6683 stcb->asoc.alternate = NULL;
6685 net = TAILQ_FIRST(&stcb->asoc.nets);
6686 if (net != stcb->asoc.primary_destination) {
6688 * first one on the list is NOT the primary
6689 * sctp_cmpaddr() is much more efficient if the
6690 * primary is the first on the list, make it so.
6692 TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6693 TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6700 sctp_is_vtag_good(uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now)
6703 * This function serves two purposes. It will see if a TAG can be
6704 * re-used and return 1 for yes it is ok and 0 for don't use that
6705 * tag. A secondary function it will do is purge out old tags that
6708 struct sctpvtaghead *chain;
6709 struct sctp_tagblock *twait_block;
6710 struct sctpasochead *head;
6711 struct sctp_tcb *stcb;
6714 SCTP_INP_INFO_RLOCK();
6715 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag,
6716 SCTP_BASE_INFO(hashasocmark))];
6719 goto skip_vtag_check;
6721 LIST_FOREACH(stcb, head, sctp_asocs) {
6723 * We choose not to lock anything here. TCB's can't be
6724 * removed since we have the read lock, so they can't be
6725 * freed on us, same thing for the INP. I may be wrong with
6726 * this assumption, but we will go with it for now :-)
6728 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
6731 if (stcb->asoc.my_vtag == tag) {
6733 if (stcb->rport != rport) {
6736 if (stcb->sctp_ep->sctp_lport != lport) {
6739 /* Its a used tag set */
6740 SCTP_INP_INFO_RUNLOCK();
6746 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
6747 /* Now what about timed wait ? */
6748 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6750 * Block(s) are present, lets see if we have this tag in the
6753 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
6754 if (twait_block->vtag_block[i].v_tag == 0) {
6757 } else if ((long)twait_block->vtag_block[i].tv_sec_at_expire <
6759 /* Audit expires this guy */
6760 twait_block->vtag_block[i].tv_sec_at_expire = 0;
6761 twait_block->vtag_block[i].v_tag = 0;
6762 twait_block->vtag_block[i].lport = 0;
6763 twait_block->vtag_block[i].rport = 0;
6764 } else if ((twait_block->vtag_block[i].v_tag == tag) &&
6765 (twait_block->vtag_block[i].lport == lport) &&
6766 (twait_block->vtag_block[i].rport == rport)) {
6767 /* Bad tag, sorry :< */
6768 SCTP_INP_INFO_RUNLOCK();
6773 SCTP_INP_INFO_RUNLOCK();
6778 sctp_drain_mbufs(struct sctp_tcb *stcb)
6781 * We must hunt this association for MBUF's past the cumack (i.e.
6782 * out of order data that we can renege on).
6784 struct sctp_association *asoc;
6785 struct sctp_tmit_chunk *chk, *nchk;
6786 uint32_t cumulative_tsn_p1;
6787 struct sctp_queued_to_read *ctl, *nctl;
6792 /* We look for anything larger than the cum-ack + 1 */
6795 if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) {
6796 /* none we can reneg on. */
6799 SCTP_STAT_INCR(sctps_protocol_drains_done);
6800 cumulative_tsn_p1 = asoc->cumulative_tsn + 1;
6802 /* First look in the re-assembly queue */
6803 TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) {
6804 if (SCTP_TSN_GT(chk->rec.data.TSN_seq, cumulative_tsn_p1)) {
6805 /* Yep it is above cum-ack */
6807 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.TSN_seq, asoc->mapping_array_base_tsn);
6808 asoc->size_on_reasm_queue = sctp_sbspace_sub(asoc->size_on_reasm_queue, chk->send_size);
6809 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6810 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6811 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
6813 sctp_m_freem(chk->data);
6816 sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
6819 /* Ok that was fun, now we will drain all the inbound streams? */
6820 for (strmat = 0; strmat < asoc->streamincnt; strmat++) {
6821 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[strmat].inqueue, next, nctl) {
6822 if (SCTP_TSN_GT(ctl->sinfo_tsn, cumulative_tsn_p1)) {
6823 /* Yep it is above cum-ack */
6825 SCTP_CALC_TSN_TO_GAP(gap, ctl->sinfo_tsn, asoc->mapping_array_base_tsn);
6826 asoc->size_on_all_streams = sctp_sbspace_sub(asoc->size_on_all_streams, ctl->length);
6827 sctp_ucount_decr(asoc->cnt_on_all_streams);
6828 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6829 TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, ctl, next);
6831 sctp_m_freem(ctl->data);
6834 sctp_free_remote_addr(ctl->whoFrom);
6835 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
6836 SCTP_DECR_READQ_COUNT();
6841 /* We must back down to see what the new highest is */
6842 for (i = asoc->highest_tsn_inside_map; SCTP_TSN_GE(i, asoc->mapping_array_base_tsn); i--) {
6843 SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn);
6844 if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) {
6845 asoc->highest_tsn_inside_map = i;
6851 asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1;
6854 * Question, should we go through the delivery queue? The
6855 * only reason things are on here is the app not reading OR
6856 * a p-d-api up. An attacker COULD send enough in to
6857 * initiate the PD-API and then send a bunch of stuff to
6858 * other streams... these would wind up on the delivery
6859 * queue.. and then we would not get to them. But in order
6860 * to do this I then have to back-track and un-deliver
6861 * sequence numbers in streams.. el-yucko. I think for now
6862 * we will NOT look at the delivery queue and leave it to be
6863 * something to consider later. An alternative would be to
6864 * abort the P-D-API with a notification and then deliver
6865 * the data.... Or another method might be to keep track of
6866 * how many times the situation occurs and if we see a
6867 * possible attack underway just abort the association.
6870 SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt);
6873 * Now do we need to find a new
6874 * asoc->highest_tsn_inside_map?
6876 asoc->last_revoke_count = cnt;
6877 (void)SCTP_OS_TIMER_STOP(&stcb->asoc.dack_timer.timer);
6878 /* sa_ignore NO_NULL_CHK */
6879 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
6880 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED);
6883 * Another issue, in un-setting the TSN's in the mapping array we
6884 * DID NOT adjust the highest_tsn marker. This will cause one of
6885 * two things to occur. It may cause us to do extra work in checking
6886 * for our mapping array movement. More importantly it may cause us
6887 * to SACK every datagram. This may not be a bad thing though since
6888 * we will recover once we get our cum-ack above and all this stuff
6889 * we dumped recovered.
6897 * We must walk the PCB lists for ALL associations here. The system
6898 * is LOW on MBUF's and needs help. This is where reneging will
6899 * occur. We really hope this does NOT happen!
6901 VNET_ITERATOR_DECL(vnet_iter);
6902 VNET_LIST_RLOCK_NOSLEEP();
6903 VNET_FOREACH(vnet_iter) {
6904 CURVNET_SET(vnet_iter);
6905 struct sctp_inpcb *inp;
6906 struct sctp_tcb *stcb;
6908 SCTP_STAT_INCR(sctps_protocol_drain_calls);
6909 if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
6916 SCTP_INP_INFO_RLOCK();
6917 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
6918 /* For each endpoint */
6919 SCTP_INP_RLOCK(inp);
6920 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
6921 /* For each association */
6922 SCTP_TCB_LOCK(stcb);
6923 sctp_drain_mbufs(stcb);
6924 SCTP_TCB_UNLOCK(stcb);
6926 SCTP_INP_RUNLOCK(inp);
6928 SCTP_INP_INFO_RUNLOCK();
6931 VNET_LIST_RUNLOCK_NOSLEEP();
6935 * start a new iterator
6936 * iterates through all endpoints and associations based on the pcb_state
6937 * flags and asoc_state. "af" (mandatory) is executed for all matching
6938 * assocs and "ef" (optional) is executed when the iterator completes.
6939 * "inpf" (optional) is executed for each new endpoint as it is being
6940 * iterated through. inpe (optional) is called when the inp completes
6941 * its way through all the stcbs.
6944 sctp_initiate_iterator(inp_func inpf,
6948 uint32_t pcb_features,
6949 uint32_t asoc_state,
6953 struct sctp_inpcb *s_inp,
6954 uint8_t chunk_output_off)
6956 struct sctp_iterator *it = NULL;
6961 SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator),
6964 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
6967 memset(it, 0, sizeof(*it));
6968 it->function_assoc = af;
6969 it->function_inp = inpf;
6971 it->done_current_ep = 0;
6973 it->done_current_ep = 1;
6974 it->function_atend = ef;
6977 it->pcb_flags = pcb_state;
6978 it->pcb_features = pcb_features;
6979 it->asoc_state = asoc_state;
6980 it->function_inp_end = inpe;
6981 it->no_chunk_output = chunk_output_off;
6984 /* Assume lock is held here */
6986 SCTP_INP_INCR_REF(it->inp);
6987 it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP;
6989 SCTP_INP_INFO_RLOCK();
6990 it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead));
6992 SCTP_INP_INCR_REF(it->inp);
6994 SCTP_INP_INFO_RUNLOCK();
6995 it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP;
6998 SCTP_IPI_ITERATOR_WQ_LOCK();
7000 TAILQ_INSERT_TAIL(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
7001 if (sctp_it_ctl.iterator_running == 0) {
7002 sctp_wakeup_iterator();
7004 SCTP_IPI_ITERATOR_WQ_UNLOCK();
7005 /* sa_ignore MEMLEAK {memory is put on the tailq for the iterator} */