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 (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
902 SCTP_IPI_ADDR_RUNLOCK();
910 if (ipv6_addr_legal) {
911 struct sockaddr_in6 *sin6,
914 sin6 = &sctp_ifa->address.sin6;
915 rsin6 = (struct sockaddr_in6 *)to;
916 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
917 if (local_scope == 0)
919 if (sin6->sin6_scope_id == 0) {
920 if (sa6_recoverscope(sin6) != 0)
924 if ((site_scope == 0) &&
925 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
928 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
929 SCTP_IPI_ADDR_RUNLOCK();
942 struct sctp_laddr *laddr;
944 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
945 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
946 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
949 if (sctp_is_addr_restricted(stcb, laddr->ifa) &&
950 (!sctp_is_addr_pending(stcb, laddr->ifa))) {
952 * We allow pending addresses, where we have
953 * sent an asconf-add to be considered
958 if (laddr->ifa->address.sa.sa_family != to->sa_family) {
961 switch (to->sa_family) {
965 struct sockaddr_in *sin, *rsin;
967 sin = (struct sockaddr_in *)&laddr->ifa->address.sin;
968 rsin = (struct sockaddr_in *)to;
969 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
970 SCTP_IPI_ADDR_RUNLOCK();
979 struct sockaddr_in6 *sin6, *rsin6;
981 sin6 = (struct sockaddr_in6 *)&laddr->ifa->address.sin6;
982 rsin6 = (struct sockaddr_in6 *)to;
983 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
984 SCTP_IPI_ADDR_RUNLOCK();
998 SCTP_IPI_ADDR_RUNLOCK();
1003 static struct sctp_tcb *
1004 sctp_tcb_special_locate(struct sctp_inpcb **inp_p, struct sockaddr *from,
1005 struct sockaddr *to, struct sctp_nets **netp, uint32_t vrf_id)
1007 /**** ASSUMES THE CALLER holds the INP_INFO_RLOCK */
1009 * If we support the TCP model, then we must now dig through to see
1010 * if we can find our endpoint in the list of tcp ep's.
1012 uint16_t lport, rport;
1013 struct sctppcbhead *ephead;
1014 struct sctp_inpcb *inp;
1015 struct sctp_laddr *laddr;
1016 struct sctp_tcb *stcb;
1017 struct sctp_nets *net;
1019 if ((to == NULL) || (from == NULL)) {
1022 switch (to->sa_family) {
1025 if (from->sa_family == AF_INET) {
1026 lport = ((struct sockaddr_in *)to)->sin_port;
1027 rport = ((struct sockaddr_in *)from)->sin_port;
1035 if (from->sa_family == AF_INET6) {
1036 lport = ((struct sockaddr_in6 *)to)->sin6_port;
1037 rport = ((struct sockaddr_in6 *)from)->sin6_port;
1046 ephead = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
1048 * Ok now for each of the guys in this bucket we must look and see:
1049 * - Does the remote port match. - Does there single association's
1050 * addresses match this address (to). If so we update p_ep to point
1051 * to this ep and return the tcb from it.
1053 LIST_FOREACH(inp, ephead, sctp_hash) {
1054 SCTP_INP_RLOCK(inp);
1055 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1056 SCTP_INP_RUNLOCK(inp);
1059 if (lport != inp->sctp_lport) {
1060 SCTP_INP_RUNLOCK(inp);
1063 if (inp->def_vrf_id != vrf_id) {
1064 SCTP_INP_RUNLOCK(inp);
1067 /* check to see if the ep has one of the addresses */
1068 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
1069 /* We are NOT bound all, so look further */
1072 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1074 if (laddr->ifa == NULL) {
1075 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n", __FUNCTION__);
1078 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1079 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
1082 if (laddr->ifa->address.sa.sa_family ==
1084 /* see if it matches */
1086 if (from->sa_family == AF_INET) {
1087 struct sockaddr_in *intf_addr,
1090 intf_addr = &laddr->ifa->address.sin;
1091 sin = (struct sockaddr_in *)to;
1092 if (sin->sin_addr.s_addr ==
1093 intf_addr->sin_addr.s_addr) {
1100 if (from->sa_family == AF_INET6) {
1101 struct sockaddr_in6 *intf_addr6;
1102 struct sockaddr_in6 *sin6;
1104 sin6 = (struct sockaddr_in6 *)
1106 intf_addr6 = &laddr->ifa->address.sin6;
1108 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1118 /* This endpoint does not have this address */
1119 SCTP_INP_RUNLOCK(inp);
1124 * Ok if we hit here the ep has the address, does it hold
1127 /* XXX: Why don't we TAILQ_FOREACH through sctp_asoc_list? */
1128 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1130 SCTP_INP_RUNLOCK(inp);
1133 SCTP_TCB_LOCK(stcb);
1134 if (!sctp_does_stcb_own_this_addr(stcb, to)) {
1135 SCTP_TCB_UNLOCK(stcb);
1136 SCTP_INP_RUNLOCK(inp);
1139 if (stcb->rport != rport) {
1140 /* remote port does not match. */
1141 SCTP_TCB_UNLOCK(stcb);
1142 SCTP_INP_RUNLOCK(inp);
1145 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1146 SCTP_TCB_UNLOCK(stcb);
1147 SCTP_INP_RUNLOCK(inp);
1150 if (!sctp_does_stcb_own_this_addr(stcb, to)) {
1151 SCTP_TCB_UNLOCK(stcb);
1152 SCTP_INP_RUNLOCK(inp);
1155 /* Does this TCB have a matching address? */
1156 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1158 if (net->ro._l_addr.sa.sa_family != from->sa_family) {
1159 /* not the same family, can't be a match */
1162 switch (from->sa_family) {
1166 struct sockaddr_in *sin, *rsin;
1168 sin = (struct sockaddr_in *)&net->ro._l_addr;
1169 rsin = (struct sockaddr_in *)from;
1170 if (sin->sin_addr.s_addr ==
1171 rsin->sin_addr.s_addr) {
1177 * Update the endpoint
1181 SCTP_INP_RUNLOCK(inp);
1190 struct sockaddr_in6 *sin6, *rsin6;
1192 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1193 rsin6 = (struct sockaddr_in6 *)from;
1194 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1201 * Update the endpoint
1205 SCTP_INP_RUNLOCK(inp);
1216 SCTP_TCB_UNLOCK(stcb);
1217 SCTP_INP_RUNLOCK(inp);
1226 * 1) If I return a NULL you must decrement any INP ref cnt. 2) If I find an
1227 * stcb, both will be locked (locked_tcb and stcb) but decrement will be done
1228 * (if locked == NULL). 3) Decrement happens on return ONLY if locked ==
1233 sctp_findassociation_ep_addr(struct sctp_inpcb **inp_p, struct sockaddr *remote,
1234 struct sctp_nets **netp, struct sockaddr *local, struct sctp_tcb *locked_tcb)
1236 struct sctpasochead *head;
1237 struct sctp_inpcb *inp;
1238 struct sctp_tcb *stcb = NULL;
1239 struct sctp_nets *net;
1243 switch (remote->sa_family) {
1246 rport = (((struct sockaddr_in *)remote)->sin_port);
1251 rport = (((struct sockaddr_in6 *)remote)->sin6_port);
1259 * UN-lock so we can do proper locking here this occurs when
1260 * called from load_addresses_from_init.
1262 atomic_add_int(&locked_tcb->asoc.refcnt, 1);
1263 SCTP_TCB_UNLOCK(locked_tcb);
1265 SCTP_INP_INFO_RLOCK();
1266 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
1267 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
1269 * Now either this guy is our listener or it's the
1270 * connector. If it is the one that issued the connect, then
1271 * it's only chance is to be the first TCB in the list. If
1272 * it is the acceptor, then do the special_lookup to hash
1273 * and find the real inp.
1275 if ((inp->sctp_socket) && (inp->sctp_socket->so_qlimit)) {
1276 /* to is peer addr, from is my addr */
1277 stcb = sctp_tcb_special_locate(inp_p, remote, local,
1278 netp, inp->def_vrf_id);
1279 if ((stcb != NULL) && (locked_tcb == NULL)) {
1280 /* we have a locked tcb, lower refcount */
1281 SCTP_INP_DECR_REF(inp);
1283 if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
1284 SCTP_INP_RLOCK(locked_tcb->sctp_ep);
1285 SCTP_TCB_LOCK(locked_tcb);
1286 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1287 SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
1289 SCTP_INP_INFO_RUNLOCK();
1292 SCTP_INP_WLOCK(inp);
1293 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1296 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1300 SCTP_TCB_LOCK(stcb);
1302 if (stcb->rport != rport) {
1303 /* remote port does not match. */
1304 SCTP_TCB_UNLOCK(stcb);
1307 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1308 SCTP_TCB_UNLOCK(stcb);
1311 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1312 SCTP_TCB_UNLOCK(stcb);
1315 /* now look at the list of remote addresses */
1316 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1318 if (net == (TAILQ_NEXT(net, sctp_next))) {
1319 panic("Corrupt net list");
1322 if (net->ro._l_addr.sa.sa_family !=
1323 remote->sa_family) {
1324 /* not the same family */
1327 switch (remote->sa_family) {
1331 struct sockaddr_in *sin,
1334 sin = (struct sockaddr_in *)
1336 rsin = (struct sockaddr_in *)remote;
1337 if (sin->sin_addr.s_addr ==
1338 rsin->sin_addr.s_addr) {
1343 if (locked_tcb == NULL) {
1344 SCTP_INP_DECR_REF(inp);
1345 } else if (locked_tcb != stcb) {
1346 SCTP_TCB_LOCK(locked_tcb);
1349 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1351 SCTP_INP_WUNLOCK(inp);
1352 SCTP_INP_INFO_RUNLOCK();
1361 struct sockaddr_in6 *sin6,
1364 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1365 rsin6 = (struct sockaddr_in6 *)remote;
1366 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1372 if (locked_tcb == NULL) {
1373 SCTP_INP_DECR_REF(inp);
1374 } else if (locked_tcb != stcb) {
1375 SCTP_TCB_LOCK(locked_tcb);
1378 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1380 SCTP_INP_WUNLOCK(inp);
1381 SCTP_INP_INFO_RUNLOCK();
1392 SCTP_TCB_UNLOCK(stcb);
1395 SCTP_INP_WLOCK(inp);
1396 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1399 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport,
1400 inp->sctp_hashmark)];
1404 LIST_FOREACH(stcb, head, sctp_tcbhash) {
1405 if (stcb->rport != rport) {
1406 /* remote port does not match */
1409 SCTP_TCB_LOCK(stcb);
1410 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1411 SCTP_TCB_UNLOCK(stcb);
1414 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1415 SCTP_TCB_UNLOCK(stcb);
1418 /* now look at the list of remote addresses */
1419 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1421 if (net == (TAILQ_NEXT(net, sctp_next))) {
1422 panic("Corrupt net list");
1425 if (net->ro._l_addr.sa.sa_family !=
1426 remote->sa_family) {
1427 /* not the same family */
1430 switch (remote->sa_family) {
1434 struct sockaddr_in *sin,
1437 sin = (struct sockaddr_in *)
1439 rsin = (struct sockaddr_in *)remote;
1440 if (sin->sin_addr.s_addr ==
1441 rsin->sin_addr.s_addr) {
1446 if (locked_tcb == NULL) {
1447 SCTP_INP_DECR_REF(inp);
1448 } else if (locked_tcb != stcb) {
1449 SCTP_TCB_LOCK(locked_tcb);
1452 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1454 SCTP_INP_WUNLOCK(inp);
1455 SCTP_INP_INFO_RUNLOCK();
1464 struct sockaddr_in6 *sin6,
1467 sin6 = (struct sockaddr_in6 *)
1469 rsin6 = (struct sockaddr_in6 *)remote;
1470 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1476 if (locked_tcb == NULL) {
1477 SCTP_INP_DECR_REF(inp);
1478 } else if (locked_tcb != stcb) {
1479 SCTP_TCB_LOCK(locked_tcb);
1482 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1484 SCTP_INP_WUNLOCK(inp);
1485 SCTP_INP_INFO_RUNLOCK();
1496 SCTP_TCB_UNLOCK(stcb);
1500 /* clean up for returning null */
1502 SCTP_TCB_LOCK(locked_tcb);
1503 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1505 SCTP_INP_WUNLOCK(inp);
1506 SCTP_INP_INFO_RUNLOCK();
1513 * Find an association for a specific endpoint using the association id given
1514 * out in the COMM_UP notification
1517 sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1520 * Use my the assoc_id to find a endpoint
1522 struct sctpasochead *head;
1523 struct sctp_tcb *stcb;
1527 SCTP_PRINTF("TSNH ep_associd\n");
1530 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1531 SCTP_PRINTF("TSNH ep_associd0\n");
1534 id = (uint32_t) asoc_id;
1535 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
1537 /* invalid id TSNH */
1538 SCTP_PRINTF("TSNH ep_associd1\n");
1541 LIST_FOREACH(stcb, head, sctp_tcbasocidhash) {
1542 if (stcb->asoc.assoc_id == id) {
1543 if (inp != stcb->sctp_ep) {
1545 * some other guy has the same id active (id
1548 SCTP_PRINTF("TSNH ep_associd2\n");
1551 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1555 SCTP_TCB_LOCK(stcb);
1565 sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1567 struct sctp_tcb *stcb;
1569 SCTP_INP_RLOCK(inp);
1570 stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
1571 SCTP_INP_RUNLOCK(inp);
1577 * Endpoint probe expects that the INP_INFO is locked.
1579 static struct sctp_inpcb *
1580 sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head,
1581 uint16_t lport, uint32_t vrf_id)
1583 struct sctp_inpcb *inp;
1584 struct sctp_laddr *laddr;
1587 struct sockaddr_in *sin;
1591 struct sockaddr_in6 *sin6;
1592 struct sockaddr_in6 *intf_addr6;
1603 switch (nam->sa_family) {
1606 sin = (struct sockaddr_in *)nam;
1611 sin6 = (struct sockaddr_in6 *)nam;
1615 /* unsupported family */
1622 LIST_FOREACH(inp, head, sctp_hash) {
1623 SCTP_INP_RLOCK(inp);
1624 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1625 SCTP_INP_RUNLOCK(inp);
1628 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) &&
1629 (inp->sctp_lport == lport)) {
1632 if ((nam->sa_family == AF_INET) &&
1633 (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1634 SCTP_IPV6_V6ONLY(inp)) {
1635 /* IPv4 on a IPv6 socket with ONLY IPv6 set */
1636 SCTP_INP_RUNLOCK(inp);
1641 /* A V6 address and the endpoint is NOT bound V6 */
1642 if (nam->sa_family == AF_INET6 &&
1643 (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
1644 SCTP_INP_RUNLOCK(inp);
1648 /* does a VRF id match? */
1650 if (inp->def_vrf_id == vrf_id)
1653 SCTP_INP_RUNLOCK(inp);
1658 SCTP_INP_RUNLOCK(inp);
1660 switch (nam->sa_family) {
1663 if (sin->sin_addr.s_addr == INADDR_ANY) {
1664 /* Can't hunt for one that has no address specified */
1671 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1672 /* Can't hunt for one that has no address specified */
1681 * ok, not bound to all so see if we can find a EP bound to this
1684 LIST_FOREACH(inp, head, sctp_hash) {
1685 SCTP_INP_RLOCK(inp);
1686 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1687 SCTP_INP_RUNLOCK(inp);
1690 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
1691 SCTP_INP_RUNLOCK(inp);
1695 * Ok this could be a likely candidate, look at all of its
1698 if (inp->sctp_lport != lport) {
1699 SCTP_INP_RUNLOCK(inp);
1702 /* does a VRF id match? */
1704 if (inp->def_vrf_id == vrf_id)
1708 SCTP_INP_RUNLOCK(inp);
1711 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1712 if (laddr->ifa == NULL) {
1713 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
1717 SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ",
1718 (void *)laddr->ifa);
1719 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1720 SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n");
1723 if (laddr->ifa->address.sa.sa_family == nam->sa_family) {
1724 /* possible, see if it matches */
1725 switch (nam->sa_family) {
1728 if (sin->sin_addr.s_addr ==
1729 laddr->ifa->address.sin.sin_addr.s_addr) {
1730 SCTP_INP_RUNLOCK(inp);
1737 intf_addr6 = &laddr->ifa->address.sin6;
1738 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1740 SCTP_INP_RUNLOCK(inp);
1748 SCTP_INP_RUNLOCK(inp);
1754 static struct sctp_inpcb *
1755 sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
1757 struct sctppcbhead *head;
1758 struct sctp_inpcb *t_inp;
1761 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1762 SCTP_BASE_INFO(hashmark))];
1763 LIST_FOREACH(t_inp, head, sctp_hash) {
1764 if (t_inp->sctp_lport != lport) {
1767 /* is it in the VRF in question */
1769 if (t_inp->def_vrf_id == vrf_id)
1774 /* This one is in use. */
1775 /* check the v6/v4 binding issue */
1776 if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1777 SCTP_IPV6_V6ONLY(t_inp)) {
1778 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1779 /* collision in V6 space */
1782 /* inp is BOUND_V4 no conflict */
1785 } else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1786 /* t_inp is bound v4 and v6, conflict always */
1789 /* t_inp is bound only V4 */
1790 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1791 SCTP_IPV6_V6ONLY(inp)) {
1795 /* else fall through to conflict */
1804 sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
1806 /* For 1-2-1 with port reuse */
1807 struct sctppcbhead *head;
1808 struct sctp_inpcb *tinp;
1810 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
1811 /* only works with port reuse on */
1814 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) {
1817 SCTP_INP_RUNLOCK(inp);
1818 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport,
1819 SCTP_BASE_INFO(hashmark))];
1820 /* Kick out all non-listeners to the TCP hash */
1821 LIST_FOREACH(tinp, head, sctp_hash) {
1822 if (tinp->sctp_lport != inp->sctp_lport) {
1825 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1828 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
1831 if (tinp->sctp_socket->so_qlimit) {
1834 SCTP_INP_WLOCK(tinp);
1835 LIST_REMOVE(tinp, sctp_hash);
1836 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))];
1837 tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
1838 LIST_INSERT_HEAD(head, tinp, sctp_hash);
1839 SCTP_INP_WUNLOCK(tinp);
1841 SCTP_INP_WLOCK(inp);
1842 /* Pull from where he was */
1843 LIST_REMOVE(inp, sctp_hash);
1844 inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL;
1845 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))];
1846 LIST_INSERT_HEAD(head, inp, sctp_hash);
1847 SCTP_INP_WUNLOCK(inp);
1848 SCTP_INP_RLOCK(inp);
1854 sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock,
1858 * First we check the hash table to see if someone has this port
1859 * bound with just the port.
1861 struct sctp_inpcb *inp;
1862 struct sctppcbhead *head;
1867 struct sockaddr_in *sin;
1871 struct sockaddr_in6 *sin6;
1875 switch (nam->sa_family) {
1878 sin = (struct sockaddr_in *)nam;
1879 lport = sin->sin_port;
1884 sin6 = (struct sockaddr_in6 *)nam;
1885 lport = sin6->sin6_port;
1892 * I could cheat here and just cast to one of the types but we will
1893 * do it right. It also provides the check against an Unsupported
1896 /* Find the head of the ALLADDR chain */
1897 if (have_lock == 0) {
1898 SCTP_INP_INFO_RLOCK();
1900 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1901 SCTP_BASE_INFO(hashmark))];
1902 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1905 * If the TCP model exists it could be that the main listening
1906 * endpoint is gone but there still exists a connected socket for
1907 * this guy. If so we can return the first one that we find. This
1908 * may NOT be the correct one so the caller should be wary on the
1909 * returned INP. Currently the only caller that sets find_tcp_pool
1910 * is in bindx where we are verifying that a user CAN bind the
1911 * address. He either has bound it already, or someone else has, or
1912 * its open to bind, so this is good enough.
1914 if (inp == NULL && find_tcp_pool) {
1915 for (i = 0; i < SCTP_BASE_INFO(hashtcpmark) + 1; i++) {
1916 head = &SCTP_BASE_INFO(sctp_tcpephash)[i];
1917 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1924 SCTP_INP_INCR_REF(inp);
1926 if (have_lock == 0) {
1927 SCTP_INP_INFO_RUNLOCK();
1934 * Find an association for an endpoint with the pointer to whom you want to
1935 * send to and the endpoint pointer. The address can be IPv4 or IPv6. We may
1936 * need to change the *to to some other struct like a mbuf...
1939 sctp_findassociation_addr_sa(struct sockaddr *from, struct sockaddr *to,
1940 struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool,
1943 struct sctp_inpcb *inp = NULL;
1944 struct sctp_tcb *stcb;
1946 SCTP_INP_INFO_RLOCK();
1947 if (find_tcp_pool) {
1948 if (inp_p != NULL) {
1949 stcb = sctp_tcb_special_locate(inp_p, from, to, netp,
1952 stcb = sctp_tcb_special_locate(&inp, from, to, netp,
1956 SCTP_INP_INFO_RUNLOCK();
1960 inp = sctp_pcb_findep(to, 0, 1, vrf_id);
1961 if (inp_p != NULL) {
1964 SCTP_INP_INFO_RUNLOCK();
1969 * ok, we have an endpoint, now lets find the assoc for it (if any)
1970 * we now place the source address or from in the to of the find
1971 * endpoint call. Since in reality this chain is used from the
1972 * inbound packet side.
1974 if (inp_p != NULL) {
1975 stcb = sctp_findassociation_ep_addr(inp_p, from, netp, to,
1978 stcb = sctp_findassociation_ep_addr(&inp, from, netp, to,
1986 * This routine will grub through the mbuf that is a INIT or INIT-ACK and
1987 * find all addresses that the sender has specified in any address list. Each
1988 * address will be used to lookup the TCB and see if one exits.
1990 static struct sctp_tcb *
1991 sctp_findassociation_special_addr(struct mbuf *m, int offset,
1992 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp,
1993 struct sockaddr *dst)
1995 struct sctp_paramhdr *phdr, parm_buf;
1997 #if defined(INET) || defined(INET6)
1998 struct sctp_tcb *stcb;
2005 struct sockaddr_in sin4;
2009 struct sockaddr_in6 sin6;
2014 memset(&sin4, 0, sizeof(sin4));
2015 sin4.sin_len = sizeof(sin4);
2016 sin4.sin_family = AF_INET;
2017 sin4.sin_port = sh->src_port;
2020 memset(&sin6, 0, sizeof(sin6));
2021 sin6.sin6_len = sizeof(sin6);
2022 sin6.sin6_family = AF_INET6;
2023 sin6.sin6_port = sh->src_port;
2026 offset += sizeof(struct sctp_init_chunk);
2028 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
2029 while (phdr != NULL) {
2030 /* now we must see if we want the parameter */
2031 #if defined(INET) || defined(INET6)
2032 ptype = ntohs(phdr->param_type);
2034 plen = ntohs(phdr->param_length);
2039 if (ptype == SCTP_IPV4_ADDRESS &&
2040 plen == sizeof(struct sctp_ipv4addr_param)) {
2041 /* Get the rest of the address */
2042 struct sctp_ipv4addr_param ip4_parm, *p4;
2044 phdr = sctp_get_next_param(m, offset,
2045 (struct sctp_paramhdr *)&ip4_parm, min(plen, sizeof(ip4_parm)));
2049 p4 = (struct sctp_ipv4addr_param *)phdr;
2050 memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr));
2052 stcb = sctp_findassociation_ep_addr(inp_p,
2053 (struct sockaddr *)&sin4, netp, dst, NULL);
2060 if (ptype == SCTP_IPV6_ADDRESS &&
2061 plen == sizeof(struct sctp_ipv6addr_param)) {
2062 /* Get the rest of the address */
2063 struct sctp_ipv6addr_param ip6_parm, *p6;
2065 phdr = sctp_get_next_param(m, offset,
2066 (struct sctp_paramhdr *)&ip6_parm, min(plen, sizeof(ip6_parm)));
2070 p6 = (struct sctp_ipv6addr_param *)phdr;
2071 memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr));
2073 stcb = sctp_findassociation_ep_addr(inp_p,
2074 (struct sockaddr *)&sin6, netp, dst, NULL);
2080 offset += SCTP_SIZE32(plen);
2081 phdr = sctp_get_next_param(m, offset, &parm_buf,
2087 static struct sctp_tcb *
2088 sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag,
2089 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport,
2090 uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
2093 * Use my vtag to hash. If we find it we then verify the source addr
2094 * is in the assoc. If all goes well we save a bit on rec of a
2097 struct sctpasochead *head;
2098 struct sctp_nets *net;
2099 struct sctp_tcb *stcb;
2101 SCTP_INP_INFO_RLOCK();
2102 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag,
2103 SCTP_BASE_INFO(hashasocmark))];
2106 SCTP_INP_INFO_RUNLOCK();
2109 LIST_FOREACH(stcb, head, sctp_asocs) {
2110 SCTP_INP_RLOCK(stcb->sctp_ep);
2111 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
2112 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2115 if (stcb->sctp_ep->def_vrf_id != vrf_id) {
2116 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2119 SCTP_TCB_LOCK(stcb);
2120 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2121 if (stcb->asoc.my_vtag == vtag) {
2123 if (stcb->rport != rport) {
2124 SCTP_TCB_UNLOCK(stcb);
2127 if (stcb->sctp_ep->sctp_lport != lport) {
2128 SCTP_TCB_UNLOCK(stcb);
2131 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
2132 SCTP_TCB_UNLOCK(stcb);
2135 /* RRS:Need toaddr check here */
2136 if (sctp_does_stcb_own_this_addr(stcb, to) == 0) {
2137 /* Endpoint does not own this address */
2138 SCTP_TCB_UNLOCK(stcb);
2143 * If we have both vtags that's all we match
2146 if (stcb->asoc.peer_vtag == remote_tag) {
2148 * If both tags match we consider it
2149 * conclusive and check NO
2150 * source/destination addresses
2155 if (skip_src_check) {
2158 *netp = sctp_findnet(stcb, from);
2160 *netp = NULL; /* unknown */
2163 *inp_p = stcb->sctp_ep;
2164 SCTP_INP_INFO_RUNLOCK();
2167 net = sctp_findnet(stcb, from);
2171 SCTP_STAT_INCR(sctps_vtagexpress);
2172 *inp_p = stcb->sctp_ep;
2173 SCTP_INP_INFO_RUNLOCK();
2177 * not him, this should only happen in rare
2178 * cases so I peg it.
2180 SCTP_STAT_INCR(sctps_vtagbogus);
2183 SCTP_TCB_UNLOCK(stcb);
2185 SCTP_INP_INFO_RUNLOCK();
2191 * Find an association with the pointer to the inbound IP packet. This can be
2192 * a IPv4 or IPv6 packet.
2195 sctp_findassociation_addr(struct mbuf *m, int offset,
2196 struct sockaddr *src, struct sockaddr *dst,
2197 struct sctphdr *sh, struct sctp_chunkhdr *ch,
2198 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2201 struct sctp_tcb *stcb;
2202 struct sctp_inpcb *inp;
2205 /* we only go down this path if vtag is non-zero */
2206 stcb = sctp_findassoc_by_vtag(src, dst, ntohl(sh->v_tag),
2207 inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0);
2213 if ((ch->chunk_type != SCTP_INITIATION) &&
2214 (ch->chunk_type != SCTP_INITIATION_ACK) &&
2215 (ch->chunk_type != SCTP_COOKIE_ACK) &&
2216 (ch->chunk_type != SCTP_COOKIE_ECHO)) {
2217 /* Other chunk types go to the tcp pool. */
2221 stcb = sctp_findassociation_addr_sa(src, dst, inp_p, netp,
2222 find_tcp_pool, vrf_id);
2225 stcb = sctp_findassociation_addr_sa(src, dst, &inp, netp,
2226 find_tcp_pool, vrf_id);
2228 SCTPDBG(SCTP_DEBUG_PCB1, "stcb:%p inp:%p\n", (void *)stcb, (void *)inp);
2229 if (stcb == NULL && inp) {
2230 /* Found a EP but not this address */
2231 if ((ch->chunk_type == SCTP_INITIATION) ||
2232 (ch->chunk_type == SCTP_INITIATION_ACK)) {
2234 * special hook, we do NOT return linp or an
2235 * association that is linked to an existing
2236 * association that is under the TCP pool (i.e. no
2237 * listener exists). The endpoint finding routine
2238 * will always find a listener before examining the
2241 if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
2247 stcb = sctp_findassociation_special_addr(m,
2248 offset, sh, &inp, netp, dst);
2249 if (inp_p != NULL) {
2254 SCTPDBG(SCTP_DEBUG_PCB1, "stcb is %p\n", (void *)stcb);
2259 * lookup an association by an ASCONF lookup address.
2260 * if the lookup address is 0.0.0.0 or ::0, use the vtag to do the lookup
2263 sctp_findassociation_ep_asconf(struct mbuf *m, int offset,
2264 struct sockaddr *dst, struct sctphdr *sh,
2265 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2267 struct sctp_tcb *stcb;
2268 struct sockaddr_storage remote_store;
2269 struct sctp_paramhdr parm_buf, *phdr;
2271 int zero_address = 0;
2274 struct sockaddr_in *sin;
2278 struct sockaddr_in6 *sin6;
2282 memset(&remote_store, 0, sizeof(remote_store));
2283 phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk),
2284 &parm_buf, sizeof(struct sctp_paramhdr));
2286 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n",
2290 ptype = (int)((uint32_t) ntohs(phdr->param_type));
2291 /* get the correlation address */
2294 case SCTP_IPV6_ADDRESS:
2296 /* ipv6 address param */
2297 struct sctp_ipv6addr_param *p6, p6_buf;
2299 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) {
2302 p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m,
2303 offset + sizeof(struct sctp_asconf_chunk),
2304 &p6_buf.ph, sizeof(*p6));
2306 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n",
2310 sin6 = (struct sockaddr_in6 *)&remote_store;
2311 sin6->sin6_family = AF_INET6;
2312 sin6->sin6_len = sizeof(*sin6);
2313 sin6->sin6_port = sh->src_port;
2314 memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr));
2315 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
2321 case SCTP_IPV4_ADDRESS:
2323 /* ipv4 address param */
2324 struct sctp_ipv4addr_param *p4, p4_buf;
2326 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) {
2329 p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m,
2330 offset + sizeof(struct sctp_asconf_chunk),
2331 &p4_buf.ph, sizeof(*p4));
2333 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n",
2337 sin = (struct sockaddr_in *)&remote_store;
2338 sin->sin_family = AF_INET;
2339 sin->sin_len = sizeof(*sin);
2340 sin->sin_port = sh->src_port;
2341 memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr));
2342 if (sin->sin_addr.s_addr == INADDR_ANY)
2348 /* invalid address param type */
2353 stcb = sctp_findassoc_by_vtag(NULL, dst, ntohl(sh->v_tag), inp_p,
2354 netp, sh->src_port, sh->dest_port, 1, vrf_id, 0);
2356 SCTP_INP_DECR_REF(*inp_p);
2359 stcb = sctp_findassociation_ep_addr(inp_p,
2360 (struct sockaddr *)&remote_store, netp,
2368 * allocate a sctp_inpcb and setup a temporary binding to a port/all
2369 * addresses. This way if we don't get a bind we by default pick a ephemeral
2370 * port with all addresses bound.
2373 sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
2376 * we get called when a new endpoint starts up. We need to allocate
2377 * the sctp_inpcb structure from the zone and init it. Mark it as
2378 * unbound and find a port that we can use as an ephemeral with
2379 * INADDR_ANY. If the user binds later no problem we can then add in
2380 * the specific addresses. And setup the default parameters for the
2384 struct sctp_inpcb *inp;
2386 struct timeval time;
2387 sctp_sharedkey_t *null_key;
2391 SCTP_INP_INFO_WLOCK();
2392 inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb);
2394 SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n");
2395 SCTP_INP_INFO_WUNLOCK();
2396 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2400 bzero(inp, sizeof(*inp));
2402 /* bump generations */
2403 /* setup socket pointers */
2404 inp->sctp_socket = so;
2405 inp->ip_inp.inp.inp_socket = so;
2407 if (INP_SOCKAF(so) == AF_INET6) {
2408 if (MODULE_GLOBAL(ip6_auto_flowlabel)) {
2409 inp->ip_inp.inp.inp_flags |= IN6P_AUTOFLOWLABEL;
2411 if (MODULE_GLOBAL(ip6_v6only)) {
2412 inp->ip_inp.inp.inp_flags |= IN6P_IPV6_V6ONLY;
2416 inp->sctp_associd_counter = 1;
2417 inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT;
2418 inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
2419 inp->sctp_cmt_on_off = SCTP_BASE_SYSCTL(sctp_cmt_on_off);
2420 inp->sctp_ecn_enable = SCTP_BASE_SYSCTL(sctp_ecn_enable);
2421 /* init the small hash table we use to track asocid <-> tcb */
2422 inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark);
2423 if (inp->sctp_asocidhash == NULL) {
2424 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2425 SCTP_INP_INFO_WUNLOCK();
2430 struct inpcbpolicy *pcb_sp = NULL;
2432 error = ipsec_init_policy(so, &pcb_sp);
2433 /* Arrange to share the policy */
2434 inp->ip_inp.inp.inp_sp = pcb_sp;
2435 ((struct in6pcb *)(&inp->ip_inp.inp))->in6p_sp = pcb_sp;
2438 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2439 SCTP_INP_INFO_WUNLOCK();
2443 SCTP_INCR_EP_COUNT();
2444 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
2445 SCTP_INP_INFO_WUNLOCK();
2447 so->so_pcb = (caddr_t)inp;
2449 if (SCTP_SO_TYPE(so) == SOCK_SEQPACKET) {
2450 /* UDP style socket */
2451 inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
2452 SCTP_PCB_FLAGS_UNBOUND);
2453 /* Be sure it is NON-BLOCKING IO for UDP */
2454 /* SCTP_SET_SO_NBIO(so); */
2455 } else if (SCTP_SO_TYPE(so) == SOCK_STREAM) {
2456 /* TCP style socket */
2457 inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
2458 SCTP_PCB_FLAGS_UNBOUND);
2459 /* Be sure we have blocking IO by default */
2460 SCTP_CLEAR_SO_NBIO(so);
2463 * unsupported socket type (RAW, etc)- in case we missed it
2466 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
2468 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2469 return (EOPNOTSUPP);
2471 if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) {
2472 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2473 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2474 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) {
2475 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2476 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2477 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) {
2478 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2479 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2481 inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize),
2482 &inp->sctp_hashmark);
2483 if (inp->sctp_tcbhash == NULL) {
2484 SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
2485 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2487 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2490 inp->def_vrf_id = vrf_id;
2492 SCTP_INP_INFO_WLOCK();
2493 SCTP_INP_LOCK_INIT(inp);
2494 INP_LOCK_INIT(&inp->ip_inp.inp, "inp", "sctpinp");
2495 SCTP_INP_READ_INIT(inp);
2496 SCTP_ASOC_CREATE_LOCK_INIT(inp);
2497 /* lock the new ep */
2498 SCTP_INP_WLOCK(inp);
2500 /* add it to the info area */
2501 LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list);
2502 SCTP_INP_INFO_WUNLOCK();
2504 TAILQ_INIT(&inp->read_queue);
2505 LIST_INIT(&inp->sctp_addr_list);
2507 LIST_INIT(&inp->sctp_asoc_list);
2509 #ifdef SCTP_TRACK_FREED_ASOCS
2511 LIST_INIT(&inp->sctp_asoc_free_list);
2513 /* Init the timer structure for signature change */
2514 SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer);
2515 inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE;
2517 /* now init the actual endpoint default data */
2520 /* setup the base timeout information */
2521 m->sctp_timeoutticks[SCTP_TIMER_SEND] = SEC_TO_TICKS(SCTP_SEND_SEC); /* needed ? */
2522 m->sctp_timeoutticks[SCTP_TIMER_INIT] = SEC_TO_TICKS(SCTP_INIT_SEC); /* needed ? */
2523 m->sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default));
2524 m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default));
2525 m->sctp_timeoutticks[SCTP_TIMER_PMTU] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default));
2526 m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default));
2527 m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default));
2528 /* all max/min max are in ms */
2529 m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default);
2530 m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default);
2531 m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default);
2532 m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default);
2533 m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default);
2534 m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default);
2535 m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default);
2536 m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default);
2537 m->def_net_pf_threshold = SCTP_BASE_SYSCTL(sctp_path_pf_threshold);
2538 m->sctp_sws_sender = SCTP_SWS_SENDER_DEF;
2539 m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF;
2540 m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default);
2541 m->fr_max_burst = SCTP_BASE_SYSCTL(sctp_fr_max_burst_default);
2543 m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module);
2544 m->sctp_default_ss_module = SCTP_BASE_SYSCTL(sctp_default_ss_module);
2545 m->max_open_streams_intome = SCTP_BASE_SYSCTL(sctp_nr_incoming_streams_default);
2546 /* number of streams to pre-open on a association */
2547 m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default);
2549 /* Add adaptation cookie */
2550 m->adaptation_layer_indicator = 0;
2551 m->adaptation_layer_indicator_provided = 0;
2553 /* seed random number generator */
2554 m->random_counter = 1;
2555 m->store_at = SCTP_SIGNATURE_SIZE;
2556 SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers));
2557 sctp_fill_random_store(m);
2559 /* Minimum cookie size */
2560 m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) +
2561 sizeof(struct sctp_state_cookie);
2562 m->size_of_a_cookie += SCTP_SIGNATURE_SIZE;
2564 /* Setup the initial secret */
2565 (void)SCTP_GETTIME_TIMEVAL(&time);
2566 m->time_of_secret_change = time.tv_sec;
2568 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
2569 m->secret_key[0][i] = sctp_select_initial_TSN(m);
2571 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
2573 /* How long is a cookie good for ? */
2574 m->def_cookie_life = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default));
2576 * Initialize authentication parameters
2578 m->local_hmacs = sctp_default_supported_hmaclist();
2579 m->local_auth_chunks = sctp_alloc_chunklist();
2580 m->default_dscp = 0;
2582 m->default_flowlabel = 0;
2584 m->port = 0; /* encapsulation disabled by default */
2585 sctp_auth_set_default_chunks(m->local_auth_chunks);
2586 LIST_INIT(&m->shared_keys);
2587 /* add default NULL key as key id 0 */
2588 null_key = sctp_alloc_sharedkey();
2589 sctp_insert_sharedkey(&m->shared_keys, null_key);
2590 SCTP_INP_WUNLOCK(inp);
2591 #ifdef SCTP_LOG_CLOSING
2592 sctp_log_closing(inp, NULL, 12);
2599 sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp,
2600 struct sctp_tcb *stcb)
2602 struct sctp_nets *net;
2603 uint16_t lport, rport;
2604 struct sctppcbhead *head;
2605 struct sctp_laddr *laddr, *oladdr;
2607 atomic_add_int(&stcb->asoc.refcnt, 1);
2608 SCTP_TCB_UNLOCK(stcb);
2609 SCTP_INP_INFO_WLOCK();
2610 SCTP_INP_WLOCK(old_inp);
2611 SCTP_INP_WLOCK(new_inp);
2612 SCTP_TCB_LOCK(stcb);
2613 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2615 new_inp->sctp_ep.time_of_secret_change =
2616 old_inp->sctp_ep.time_of_secret_change;
2617 memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key,
2618 sizeof(old_inp->sctp_ep.secret_key));
2619 new_inp->sctp_ep.current_secret_number =
2620 old_inp->sctp_ep.current_secret_number;
2621 new_inp->sctp_ep.last_secret_number =
2622 old_inp->sctp_ep.last_secret_number;
2623 new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie;
2625 /* make it so new data pours into the new socket */
2626 stcb->sctp_socket = new_inp->sctp_socket;
2627 stcb->sctp_ep = new_inp;
2629 /* Copy the port across */
2630 lport = new_inp->sctp_lport = old_inp->sctp_lport;
2631 rport = stcb->rport;
2632 /* Pull the tcb from the old association */
2633 LIST_REMOVE(stcb, sctp_tcbhash);
2634 LIST_REMOVE(stcb, sctp_tcblist);
2635 if (stcb->asoc.in_asocid_hash) {
2636 LIST_REMOVE(stcb, sctp_tcbasocidhash);
2638 /* Now insert the new_inp into the TCP connected hash */
2639 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
2641 LIST_INSERT_HEAD(head, new_inp, sctp_hash);
2642 /* Its safe to access */
2643 new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
2645 /* Now move the tcb into the endpoint list */
2646 LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist);
2648 * Question, do we even need to worry about the ep-hash since we
2649 * only have one connection? Probably not :> so lets get rid of it
2650 * and not suck up any kernel memory in that.
2652 if (stcb->asoc.in_asocid_hash) {
2653 struct sctpasochead *lhd;
2655 lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id,
2656 new_inp->hashasocidmark)];
2657 LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash);
2659 /* Ok. Let's restart timer. */
2660 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2661 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp,
2665 SCTP_INP_INFO_WUNLOCK();
2666 if (new_inp->sctp_tcbhash != NULL) {
2667 SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark);
2668 new_inp->sctp_tcbhash = NULL;
2670 if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2671 /* Subset bound, so copy in the laddr list from the old_inp */
2672 LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) {
2673 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2674 if (laddr == NULL) {
2676 * Gak, what can we do? This assoc is really
2677 * HOSED. We probably should send an abort
2680 SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n");
2683 SCTP_INCR_LADDR_COUNT();
2684 bzero(laddr, sizeof(*laddr));
2685 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2686 laddr->ifa = oladdr->ifa;
2687 atomic_add_int(&laddr->ifa->refcount, 1);
2688 LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr,
2690 new_inp->laddr_count++;
2691 if (oladdr == stcb->asoc.last_used_address) {
2692 stcb->asoc.last_used_address = laddr;
2697 * Now any running timers need to be adjusted since we really don't
2698 * care if they are running or not just blast in the new_inp into
2702 stcb->asoc.dack_timer.ep = (void *)new_inp;
2703 stcb->asoc.asconf_timer.ep = (void *)new_inp;
2704 stcb->asoc.strreset_timer.ep = (void *)new_inp;
2705 stcb->asoc.shut_guard_timer.ep = (void *)new_inp;
2706 stcb->asoc.autoclose_timer.ep = (void *)new_inp;
2707 stcb->asoc.delayed_event_timer.ep = (void *)new_inp;
2708 stcb->asoc.delete_prim_timer.ep = (void *)new_inp;
2709 /* now what about the nets? */
2710 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2711 net->pmtu_timer.ep = (void *)new_inp;
2712 net->hb_timer.ep = (void *)new_inp;
2713 net->rxt_timer.ep = (void *)new_inp;
2715 SCTP_INP_WUNLOCK(new_inp);
2716 SCTP_INP_WUNLOCK(old_inp);
2722 /* sctp_ifap is used to bypass normal local address validation checks */
2724 sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
2725 struct sctp_ifa *sctp_ifap, struct thread *p)
2727 /* bind a ep to a socket address */
2728 struct sctppcbhead *head;
2729 struct sctp_inpcb *inp, *inp_tmp;
2730 struct inpcb *ip_inp;
2731 int port_reuse_active = 0;
2739 inp = (struct sctp_inpcb *)so->so_pcb;
2740 ip_inp = (struct inpcb *)so->so_pcb;
2743 SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port: %d\n",
2744 ntohs(((struct sockaddr_in *)addr)->sin_port));
2745 SCTPDBG(SCTP_DEBUG_PCB1, "Addr: ");
2746 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
2749 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2750 /* already did a bind, subsequent binds NOT allowed ! */
2751 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2756 panic("null proc/thread");
2759 switch (addr->sa_family) {
2763 struct sockaddr_in *sin;
2765 /* IPV6_V6ONLY socket? */
2766 if (SCTP_IPV6_V6ONLY(ip_inp)) {
2767 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2770 if (addr->sa_len != sizeof(*sin)) {
2771 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2774 sin = (struct sockaddr_in *)addr;
2775 lport = sin->sin_port;
2777 * For LOOPBACK the prison_local_ip4() call
2778 * will transmute the ip address to the
2781 if (p && (error = prison_local_ip4(p->td_ucred, &sin->sin_addr)) != 0) {
2782 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2785 if (sin->sin_addr.s_addr != INADDR_ANY) {
2795 * Only for pure IPv6 Address. (No IPv4
2798 struct sockaddr_in6 *sin6;
2800 sin6 = (struct sockaddr_in6 *)addr;
2802 if (addr->sa_len != sizeof(*sin6)) {
2803 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2806 lport = sin6->sin6_port;
2808 * For LOOPBACK the prison_local_ip6() call
2809 * will transmute the ipv6 address to the
2812 if (p && (error = prison_local_ip6(p->td_ucred, &sin6->sin6_addr,
2813 (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
2814 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2817 if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2819 /* KAME hack: embed scopeid */
2820 if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
2821 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2825 /* this must be cleared for ifa_ifwithaddr() */
2826 sin6->sin6_scope_id = 0;
2831 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EAFNOSUPPORT);
2832 return (EAFNOSUPPORT);
2835 SCTP_INP_INFO_WLOCK();
2836 SCTP_INP_WLOCK(inp);
2837 /* Setup a vrf_id to be the default for the non-bind-all case. */
2838 vrf_id = inp->def_vrf_id;
2840 /* increase our count due to the unlock we do */
2841 SCTP_INP_INCR_REF(inp);
2844 * Did the caller specify a port? if so we must see if an ep
2845 * already has this one bound.
2847 /* got to be root to get at low ports */
2848 if (ntohs(lport) < IPPORT_RESERVED) {
2850 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2852 SCTP_INP_DECR_REF(inp);
2853 SCTP_INP_WUNLOCK(inp);
2854 SCTP_INP_INFO_WUNLOCK();
2858 SCTP_INP_WUNLOCK(inp);
2860 vrf_id = inp->def_vrf_id;
2861 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2862 if (inp_tmp != NULL) {
2864 * lock guy returned and lower count note
2865 * that we are not bound so inp_tmp should
2866 * NEVER be inp. And it is this inp
2867 * (inp_tmp) that gets the reference bump,
2868 * so we must lower it.
2870 SCTP_INP_DECR_REF(inp_tmp);
2872 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2873 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2875 * Ok, must be one-2-one and
2876 * allowing port re-use
2878 port_reuse_active = 1;
2879 goto continue_anyway;
2881 SCTP_INP_DECR_REF(inp);
2882 SCTP_INP_INFO_WUNLOCK();
2883 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2884 return (EADDRINUSE);
2887 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2888 if (inp_tmp != NULL) {
2890 * lock guy returned and lower count note
2891 * that we are not bound so inp_tmp should
2892 * NEVER be inp. And it is this inp
2893 * (inp_tmp) that gets the reference bump,
2894 * so we must lower it.
2896 SCTP_INP_DECR_REF(inp_tmp);
2898 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2899 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2901 * Ok, must be one-2-one and
2902 * allowing port re-use
2904 port_reuse_active = 1;
2905 goto continue_anyway;
2907 SCTP_INP_DECR_REF(inp);
2908 SCTP_INP_INFO_WUNLOCK();
2909 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2910 return (EADDRINUSE);
2914 SCTP_INP_WLOCK(inp);
2916 /* verify that no lport is not used by a singleton */
2917 if ((port_reuse_active == 0) &&
2918 (inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))) {
2919 /* Sorry someone already has this one bound */
2920 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2921 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2922 port_reuse_active = 1;
2924 SCTP_INP_DECR_REF(inp);
2925 SCTP_INP_WUNLOCK(inp);
2926 SCTP_INP_INFO_WUNLOCK();
2927 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2928 return (EADDRINUSE);
2933 uint16_t first, last, candidate;
2937 if (ip_inp->inp_flags & INP_HIGHPORT) {
2938 first = MODULE_GLOBAL(ipport_hifirstauto);
2939 last = MODULE_GLOBAL(ipport_hilastauto);
2940 } else if (ip_inp->inp_flags & INP_LOWPORT) {
2942 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2944 SCTP_INP_DECR_REF(inp);
2945 SCTP_INP_WUNLOCK(inp);
2946 SCTP_INP_INFO_WUNLOCK();
2947 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2950 first = MODULE_GLOBAL(ipport_lowfirstauto);
2951 last = MODULE_GLOBAL(ipport_lowlastauto);
2953 first = MODULE_GLOBAL(ipport_firstauto);
2954 last = MODULE_GLOBAL(ipport_lastauto);
2963 count = last - first + 1; /* number of candidates */
2964 candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count);
2968 if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) {
2973 SCTP_INP_DECR_REF(inp);
2974 SCTP_INP_WUNLOCK(inp);
2975 SCTP_INP_INFO_WUNLOCK();
2976 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2977 return (EADDRINUSE);
2979 if (candidate == last)
2982 candidate = candidate + 1;
2985 lport = htons(candidate);
2987 SCTP_INP_DECR_REF(inp);
2988 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE |
2989 SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
2991 * this really should not happen. The guy did a non-blocking
2992 * bind and then did a close at the same time.
2994 SCTP_INP_WUNLOCK(inp);
2995 SCTP_INP_INFO_WUNLOCK();
2996 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2999 /* ok we look clear to give out this port, so lets setup the binding */
3001 /* binding to all addresses, so just set in the proper flags */
3002 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL;
3003 /* set the automatic addr changes from kernel flag */
3004 if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) {
3005 sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3006 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3008 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3009 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3011 if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) {
3012 sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3014 sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3017 * set the automatic mobility_base from kernel flag (by
3020 if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) {
3021 sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE);
3022 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3024 sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE);
3025 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3028 * set the automatic mobility_fasthandoff from kernel flag
3031 if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) {
3032 sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF);
3033 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3035 sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF);
3036 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3040 * bind specific, make sure flags is off and add a new
3041 * address structure to the sctp_addr_list inside the ep
3044 * We will need to allocate one and insert it at the head. The
3045 * socketopt call can just insert new addresses in there as
3046 * well. It will also have to do the embed scope kame hack
3047 * too (before adding).
3049 struct sctp_ifa *ifa;
3050 struct sockaddr_storage store_sa;
3052 memset(&store_sa, 0, sizeof(store_sa));
3053 switch (addr->sa_family) {
3057 struct sockaddr_in *sin;
3059 sin = (struct sockaddr_in *)&store_sa;
3060 memcpy(sin, addr, sizeof(struct sockaddr_in));
3068 struct sockaddr_in6 *sin6;
3070 sin6 = (struct sockaddr_in6 *)&store_sa;
3071 memcpy(sin6, addr, sizeof(struct sockaddr_in6));
3072 sin6->sin6_port = 0;
3080 * first find the interface with the bound address need to
3081 * zero out the port to find the address! yuck! can't do
3082 * this earlier since need port for sctp_pcb_findep()
3084 if (sctp_ifap != NULL) {
3088 * Note for BSD we hit here always other O/S's will
3089 * pass things in via the sctp_ifap argument
3092 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&store_sa,
3093 vrf_id, SCTP_ADDR_NOT_LOCKED);
3096 /* Can't find an interface with that address */
3097 SCTP_INP_WUNLOCK(inp);
3098 SCTP_INP_INFO_WUNLOCK();
3099 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRNOTAVAIL);
3100 return (EADDRNOTAVAIL);
3103 if (addr->sa_family == AF_INET6) {
3104 /* GAK, more FIXME IFA lock? */
3105 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
3106 /* Can't bind a non-existent addr. */
3107 SCTP_INP_WUNLOCK(inp);
3108 SCTP_INP_INFO_WUNLOCK();
3109 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3114 /* we're not bound all */
3115 inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL;
3116 /* allow bindx() to send ASCONF's for binding changes */
3117 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3118 /* clear automatic addr changes from kernel flag */
3119 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3121 /* add this address to the endpoint list */
3122 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0);
3124 SCTP_INP_WUNLOCK(inp);
3125 SCTP_INP_INFO_WUNLOCK();
3130 /* find the bucket */
3131 if (port_reuse_active) {
3132 /* Put it into tcp 1-2-1 hash */
3133 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))];
3134 inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
3136 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))];
3138 /* put it in the bucket */
3139 LIST_INSERT_HEAD(head, inp, sctp_hash);
3140 SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n",
3141 (void *)head, ntohs(lport), port_reuse_active);
3142 /* set in the port */
3143 inp->sctp_lport = lport;
3145 /* turn off just the unbound flag */
3146 inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
3147 SCTP_INP_WUNLOCK(inp);
3148 SCTP_INP_INFO_WUNLOCK();
3154 sctp_iterator_inp_being_freed(struct sctp_inpcb *inp)
3156 struct sctp_iterator *it, *nit;
3159 * We enter with the only the ITERATOR_LOCK in place and a write
3160 * lock on the inp_info stuff.
3162 it = sctp_it_ctl.cur_it;
3163 if (it && (it->vn != curvnet)) {
3164 /* Its not looking at our VNET */
3167 if (it && (it->inp == inp)) {
3169 * This is tricky and we hold the iterator lock, but when it
3170 * returns and gets the lock (when we release it) the
3171 * iterator will try to operate on inp. We need to stop that
3172 * from happening. But of course the iterator has a
3173 * reference on the stcb and inp. We can mark it and it will
3176 * If its a single iterator situation, we set the end iterator
3177 * flag. Otherwise we set the iterator to go to the next
3181 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3182 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
3184 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_INP;
3188 * Now go through and remove any single reference to our inp that
3189 * may be still pending on the list
3191 SCTP_IPI_ITERATOR_WQ_LOCK();
3192 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
3193 if (it->vn != curvnet) {
3196 if (it->inp == inp) {
3197 /* This one points to me is it inp specific? */
3198 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3199 /* Remove and free this one */
3200 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
3202 if (it->function_atend != NULL) {
3203 (*it->function_atend) (it->pointer, it->val);
3205 SCTP_FREE(it, SCTP_M_ITER);
3207 it->inp = LIST_NEXT(it->inp, sctp_list);
3209 SCTP_INP_INCR_REF(it->inp);
3213 * When its put in the refcnt is incremented so decr
3216 SCTP_INP_DECR_REF(inp);
3219 SCTP_IPI_ITERATOR_WQ_UNLOCK();
3222 /* release sctp_inpcb unbind the port */
3224 sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
3227 * Here we free a endpoint. We must find it (if it is in the Hash
3228 * table) and remove it from there. Then we must also find it in the
3229 * overall list and remove it from there. After all removals are
3230 * complete then any timer has to be stopped. Then start the actual
3231 * freeing. a) Any local lists. b) Any associations. c) The hash of
3232 * all associations. d) finally the ep itself.
3234 struct sctp_tcb *asoc, *nasoc;
3235 struct sctp_laddr *laddr, *nladdr;
3236 struct inpcb *ip_pcb;
3238 int being_refed = 0;
3239 struct sctp_queued_to_read *sq, *nsq;
3241 sctp_sharedkey_t *shared_key, *nshared_key;
3244 #ifdef SCTP_LOG_CLOSING
3245 sctp_log_closing(inp, NULL, 0);
3247 SCTP_ITERATOR_LOCK();
3248 /* mark any iterators on the list or being processed */
3249 sctp_iterator_inp_being_freed(inp);
3250 SCTP_ITERATOR_UNLOCK();
3251 so = inp->sctp_socket;
3252 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
3253 /* been here before.. eeks.. get out of here */
3254 SCTP_PRINTF("This conflict in free SHOULD not be happening! from %d, imm %d\n", from, immediate);
3255 #ifdef SCTP_LOG_CLOSING
3256 sctp_log_closing(inp, NULL, 1);
3260 SCTP_ASOC_CREATE_LOCK(inp);
3261 SCTP_INP_INFO_WLOCK();
3263 SCTP_INP_WLOCK(inp);
3264 if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
3265 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP;
3266 /* socket is gone, so no more wakeups allowed */
3267 inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE;
3268 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
3269 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
3272 /* First time through we have the socket lock, after that no more. */
3273 sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL,
3274 SCTP_FROM_SCTP_PCB + SCTP_LOC_1);
3277 sctp_m_freem(inp->control);
3278 inp->control = NULL;
3281 sctp_m_freem(inp->pkt);
3284 ip_pcb = &inp->ip_inp.inp; /* we could just cast the main pointer
3285 * here but I will be nice :> (i.e.
3287 if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
3291 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3292 SCTP_TCB_LOCK(asoc);
3293 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3294 /* Skip guys being freed */
3296 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3298 * Special case - we did not start a
3299 * kill timer on the asoc due to it
3300 * was not closed. So go ahead and
3303 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3304 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3306 SCTP_TCB_UNLOCK(asoc);
3309 if (((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_WAIT) ||
3310 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_ECHOED)) &&
3311 (asoc->asoc.total_output_queue_size == 0)) {
3313 * If we have data in queue, we don't want
3314 * to just free since the app may have done,
3315 * send()/close or connect/send/close. And
3316 * it wants the data to get across first.
3318 /* Just abandon things in the front states */
3319 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE,
3320 SCTP_FROM_SCTP_PCB + SCTP_LOC_2) == 0) {
3325 /* Disconnect the socket please */
3326 asoc->sctp_socket = NULL;
3327 asoc->asoc.state |= SCTP_STATE_CLOSED_SOCKET;
3328 if ((asoc->asoc.size_on_reasm_queue > 0) ||
3329 (asoc->asoc.control_pdapi) ||
3330 (asoc->asoc.size_on_all_streams > 0) ||
3331 (so && (so->so_rcv.sb_cc > 0))) {
3332 /* Left with Data unread */
3333 struct mbuf *op_err;
3335 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3336 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_3;
3337 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3338 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3339 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3340 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3341 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3343 if (sctp_free_assoc(inp, asoc,
3344 SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_4) == 0) {
3348 } else if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3349 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3350 (asoc->asoc.stream_queue_cnt == 0)) {
3351 if (asoc->asoc.locked_on_sending) {
3354 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
3355 (SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
3356 struct sctp_nets *netp;
3359 * there is nothing queued to send,
3360 * so I send shutdown
3362 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3363 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3364 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3366 SCTP_SET_STATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_SENT);
3367 SCTP_CLEAR_SUBSTATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_PENDING);
3368 sctp_stop_timers_for_shutdown(asoc);
3369 if (asoc->asoc.alternate) {
3370 netp = asoc->asoc.alternate;
3372 netp = asoc->asoc.primary_destination;
3374 sctp_send_shutdown(asoc, netp);
3375 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, asoc->sctp_ep, asoc,
3377 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3378 asoc->asoc.primary_destination);
3379 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED);
3382 /* mark into shutdown pending */
3383 struct sctp_stream_queue_pending *sp;
3385 asoc->asoc.state |= SCTP_STATE_SHUTDOWN_PENDING;
3386 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3387 asoc->asoc.primary_destination);
3388 if (asoc->asoc.locked_on_sending) {
3389 sp = TAILQ_LAST(&((asoc->asoc.locked_on_sending)->outqueue),
3392 SCTP_PRINTF("Error, sp is NULL, locked on sending is %p strm:%d\n",
3393 (void *)asoc->asoc.locked_on_sending,
3394 asoc->asoc.locked_on_sending->stream_no);
3396 if ((sp->length == 0) && (sp->msg_is_complete == 0))
3397 asoc->asoc.state |= SCTP_STATE_PARTIAL_MSG_LEFT;
3400 if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3401 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3402 (asoc->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
3403 struct mbuf *op_err;
3406 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3407 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_5;
3408 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3409 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3410 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3411 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3412 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3414 if (sctp_free_assoc(inp, asoc,
3415 SCTP_PCBFREE_NOFORCE,
3416 SCTP_FROM_SCTP_PCB + SCTP_LOC_6) == 0) {
3421 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
3425 SCTP_TCB_UNLOCK(asoc);
3427 /* now is there some left in our SHUTDOWN state? */
3429 #ifdef SCTP_LOG_CLOSING
3430 sctp_log_closing(inp, NULL, 2);
3432 inp->sctp_socket = NULL;
3433 SCTP_INP_WUNLOCK(inp);
3434 SCTP_ASOC_CREATE_UNLOCK(inp);
3435 SCTP_INP_INFO_WUNLOCK();
3439 inp->sctp_socket = NULL;
3440 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) !=
3441 SCTP_PCB_FLAGS_UNBOUND) {
3443 * ok, this guy has been bound. It's port is somewhere in
3444 * the SCTP_BASE_INFO(hash table). Remove it!
3446 LIST_REMOVE(inp, sctp_hash);
3447 inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND;
3450 * If there is a timer running to kill us, forget it, since it may
3451 * have a contest on the INP lock.. which would cause us to die ...
3454 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3455 SCTP_TCB_LOCK(asoc);
3456 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3457 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3458 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3459 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3462 SCTP_TCB_UNLOCK(asoc);
3465 /* Free associations that are NOT killing us */
3466 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_COOKIE_WAIT) &&
3467 ((asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) {
3468 struct mbuf *op_err;
3470 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3471 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_7;
3472 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3473 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3474 } else if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3476 SCTP_TCB_UNLOCK(asoc);
3479 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3480 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3481 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3483 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_8) == 0) {
3488 /* Ok we have someone out there that will kill us */
3489 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3490 #ifdef SCTP_LOG_CLOSING
3491 sctp_log_closing(inp, NULL, 3);
3493 SCTP_INP_WUNLOCK(inp);
3494 SCTP_ASOC_CREATE_UNLOCK(inp);
3495 SCTP_INP_INFO_WUNLOCK();
3498 if (SCTP_INP_LOCK_CONTENDED(inp))
3500 if (SCTP_INP_READ_CONTENDED(inp))
3502 if (SCTP_ASOC_CREATE_LOCK_CONTENDED(inp))
3505 if ((inp->refcount) ||
3507 (inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) {
3508 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3509 #ifdef SCTP_LOG_CLOSING
3510 sctp_log_closing(inp, NULL, 4);
3512 sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
3513 SCTP_INP_WUNLOCK(inp);
3514 SCTP_ASOC_CREATE_UNLOCK(inp);
3515 SCTP_INP_INFO_WUNLOCK();
3518 inp->sctp_ep.signature_change.type = 0;
3519 inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE;
3521 * Remove it from the list .. last thing we need a lock for.
3523 LIST_REMOVE(inp, sctp_list);
3524 SCTP_INP_WUNLOCK(inp);
3525 SCTP_ASOC_CREATE_UNLOCK(inp);
3526 SCTP_INP_INFO_WUNLOCK();
3528 * Now we release all locks. Since this INP cannot be found anymore
3529 * except possibly by the kill timer that might be running. We call
3530 * the drain function here. It should hit the case were it sees the
3531 * ACTIVE flag cleared and exit out freeing us to proceed and
3532 * destroy everything.
3534 if (from != SCTP_CALLED_FROM_INPKILL_TIMER) {
3535 (void)SCTP_OS_TIMER_STOP_DRAIN(&inp->sctp_ep.signature_change.timer);
3537 /* Probably un-needed */
3538 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3541 #ifdef SCTP_LOG_CLOSING
3542 sctp_log_closing(inp, NULL, 5);
3546 if ((inp->sctp_asocidhash) != NULL) {
3547 SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark);
3548 inp->sctp_asocidhash = NULL;
3550 /* sa_ignore FREED_MEMORY */
3551 TAILQ_FOREACH_SAFE(sq, &inp->read_queue, next, nsq) {
3552 /* Its only abandoned if it had data left */
3554 SCTP_STAT_INCR(sctps_left_abandon);
3556 TAILQ_REMOVE(&inp->read_queue, sq, next);
3557 sctp_free_remote_addr(sq->whoFrom);
3559 so->so_rcv.sb_cc -= sq->length;
3561 sctp_m_freem(sq->data);
3565 * no need to free the net count, since at this point all
3568 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
3569 SCTP_DECR_READQ_COUNT();
3571 /* Now the sctp_pcb things */
3573 * free each asoc if it is not already closed/free. we can't use the
3574 * macro here since le_next will get freed as part of the
3575 * sctp_free_assoc() call.
3579 ipsec_delete_pcbpolicy(ip_pcb);
3582 /* Unlocks not needed since the socket is gone now */
3584 if (ip_pcb->inp_options) {
3585 (void)sctp_m_free(ip_pcb->inp_options);
3586 ip_pcb->inp_options = 0;
3589 if (ip_pcb->inp_vflag & INP_IPV6) {
3590 struct in6pcb *in6p;
3592 in6p = (struct in6pcb *)inp;
3593 ip6_freepcbopts(in6p->in6p_outputopts);
3596 ip_pcb->inp_vflag = 0;
3597 /* free up authentication fields */
3598 if (inp->sctp_ep.local_auth_chunks != NULL)
3599 sctp_free_chunklist(inp->sctp_ep.local_auth_chunks);
3600 if (inp->sctp_ep.local_hmacs != NULL)
3601 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3603 LIST_FOREACH_SAFE(shared_key, &inp->sctp_ep.shared_keys, next, nshared_key) {
3604 LIST_REMOVE(shared_key, next);
3605 sctp_free_sharedkey(shared_key);
3606 /* sa_ignore FREED_MEMORY */
3610 * if we have an address list the following will free the list of
3611 * ifaddr's that are set into this ep. Again macro limitations here,
3612 * since the LIST_FOREACH could be a bad idea.
3614 LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
3615 sctp_remove_laddr(laddr);
3618 #ifdef SCTP_TRACK_FREED_ASOCS
3620 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_free_list, sctp_tcblist, nasoc) {
3621 LIST_REMOVE(asoc, sctp_tcblist);
3622 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), asoc);
3623 SCTP_DECR_ASOC_COUNT();
3625 /* *** END TEMP CODE *** */
3627 /* Now lets see about freeing the EP hash table. */
3628 if (inp->sctp_tcbhash != NULL) {
3629 SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
3630 inp->sctp_tcbhash = NULL;
3632 /* Now we must put the ep memory back into the zone pool */
3633 INP_LOCK_DESTROY(&inp->ip_inp.inp);
3634 SCTP_INP_LOCK_DESTROY(inp);
3635 SCTP_INP_READ_DESTROY(inp);
3636 SCTP_ASOC_CREATE_LOCK_DESTROY(inp);
3637 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
3638 SCTP_DECR_EP_COUNT();
3643 sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
3645 struct sctp_nets *net;
3647 /* locate the address */
3648 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3649 if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr))
3657 sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
3659 struct sctp_ifa *sctp_ifa;
3661 sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED);
3670 * add's a remote endpoint address, done with the INIT/INIT-ACK as well as
3671 * when a ASCONF arrives that adds it. It will also initialize all the cwnd
3675 sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
3676 struct sctp_nets **netp, int set_scope, int from)
3679 * The following is redundant to the same lines in the
3680 * sctp_aloc_assoc() but is needed since others call the add address
3683 struct sctp_nets *net, *netfirst;
3686 SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ",
3688 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr);
3690 netfirst = sctp_findnet(stcb, newaddr);
3693 * Lie and return ok, we don't want to make the association
3694 * go away for this behavior. It will happen in the TCP
3695 * model in a connected socket. It does not reach the hash
3696 * table until after the association is built so it can't be
3697 * found. Mark as reachable, since the initial creation will
3698 * have been cleared and the NOT_IN_ASSOC flag will have
3699 * been added... and we don't want to end up removing it
3702 if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) {
3703 netfirst->dest_state = (SCTP_ADDR_REACHABLE |
3704 SCTP_ADDR_UNCONFIRMED);
3706 netfirst->dest_state = SCTP_ADDR_REACHABLE;
3712 switch (newaddr->sa_family) {
3716 struct sockaddr_in *sin;
3718 sin = (struct sockaddr_in *)newaddr;
3719 if (sin->sin_addr.s_addr == 0) {
3720 /* Invalid address */
3723 /* zero out the bzero area */
3724 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
3726 /* assure len is set */
3727 sin->sin_len = sizeof(struct sockaddr_in);
3729 #ifdef SCTP_DONT_DO_PRIVADDR_SCOPE
3730 stcb->asoc.scope.ipv4_local_scope = 1;
3732 if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
3733 stcb->asoc.scope.ipv4_local_scope = 1;
3735 #endif /* SCTP_DONT_DO_PRIVADDR_SCOPE */
3737 /* Validate the address is in scope */
3738 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) &&
3739 (stcb->asoc.scope.ipv4_local_scope == 0)) {
3749 struct sockaddr_in6 *sin6;
3751 sin6 = (struct sockaddr_in6 *)newaddr;
3752 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3753 /* Invalid address */
3756 /* assure len is set */
3757 sin6->sin6_len = sizeof(struct sockaddr_in6);
3759 if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) {
3760 stcb->asoc.scope.loopback_scope = 1;
3761 stcb->asoc.scope.local_scope = 0;
3762 stcb->asoc.scope.ipv4_local_scope = 1;
3763 stcb->asoc.scope.site_scope = 1;
3764 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
3766 * If the new destination is a
3767 * LINK_LOCAL we must have common
3768 * site scope. Don't set the local
3769 * scope since we may not share all
3770 * links, only loopback can do this.
3771 * Links on the local network would
3772 * also be on our private network
3775 stcb->asoc.scope.ipv4_local_scope = 1;
3776 stcb->asoc.scope.site_scope = 1;
3777 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
3779 * If the new destination is
3780 * SITE_LOCAL then we must have site
3783 stcb->asoc.scope.site_scope = 1;
3786 /* Validate the address is in scope */
3787 if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) &&
3788 (stcb->asoc.scope.loopback_scope == 0)) {
3790 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
3791 (stcb->asoc.scope.local_scope == 0)) {
3793 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
3794 (stcb->asoc.scope.site_scope == 0)) {
3802 /* not supported family type */
3805 net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets);
3809 SCTP_INCR_RADDR_COUNT();
3810 bzero(net, sizeof(struct sctp_nets));
3811 (void)SCTP_GETTIME_TIMEVAL(&net->start_time);
3812 memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len);
3813 switch (newaddr->sa_family) {
3816 ((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport;
3821 ((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport;
3827 net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id);
3828 if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) {
3829 stcb->asoc.scope.loopback_scope = 1;
3830 stcb->asoc.scope.ipv4_local_scope = 1;
3831 stcb->asoc.scope.local_scope = 0;
3832 stcb->asoc.scope.site_scope = 1;
3835 net->failure_threshold = stcb->asoc.def_net_failure;
3836 net->pf_threshold = stcb->asoc.def_net_pf_threshold;
3837 if (addr_inscope == 0) {
3838 net->dest_state = (SCTP_ADDR_REACHABLE |
3839 SCTP_ADDR_OUT_OF_SCOPE);
3841 if (from == SCTP_ADDR_IS_CONFIRMED)
3842 /* SCTP_ADDR_IS_CONFIRMED is passed by connect_x */
3843 net->dest_state = SCTP_ADDR_REACHABLE;
3845 net->dest_state = SCTP_ADDR_REACHABLE |
3846 SCTP_ADDR_UNCONFIRMED;
3849 * We set this to 0, the timer code knows that this means its an
3852 net->rto_needed = 1;
3854 net->RTO_measured = 0;
3855 stcb->asoc.numnets++;
3857 net->cwr_window_tsn = net->last_cwr_tsn = stcb->asoc.sending_seq - 1;
3858 net->port = stcb->asoc.port;
3859 net->dscp = stcb->asoc.default_dscp;
3861 net->flowlabel = stcb->asoc.default_flowlabel;
3863 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
3864 net->dest_state |= SCTP_ADDR_NOHB;
3866 net->dest_state &= ~SCTP_ADDR_NOHB;
3868 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DO_NOT_PMTUD)) {
3869 net->dest_state |= SCTP_ADDR_NO_PMTUD;
3871 net->dest_state &= ~SCTP_ADDR_NO_PMTUD;
3873 net->heart_beat_delay = stcb->asoc.heart_beat_delay;
3874 /* Init the timer structure */
3875 SCTP_OS_TIMER_INIT(&net->rxt_timer.timer);
3876 SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer);
3877 SCTP_OS_TIMER_INIT(&net->hb_timer.timer);
3879 /* Now generate a route for this guy */
3881 /* KAME hack: embed scopeid */
3882 if (newaddr->sa_family == AF_INET6) {
3883 struct sockaddr_in6 *sin6;
3885 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3886 (void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone));
3887 sin6->sin6_scope_id = 0;
3890 SCTP_RTALLOC((sctp_route_t *) & net->ro, stcb->asoc.vrf_id);
3892 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) {
3893 /* Get source address */
3894 net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep,
3896 (sctp_route_t *) & net->ro,
3900 /* Now get the interface MTU */
3901 if (net->ro._s_addr && net->ro._s_addr->ifn_p) {
3902 net->mtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p);
3907 rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_rt);
3910 * Start things off to match mtu of
3913 SCTP_SET_MTU_OF_ROUTE(&net->ro._l_addr.sa,
3914 net->ro.ro_rt, net->mtu);
3917 * we take the route mtu over the interface,
3918 * since the route may be leading out the
3919 * loopback, or a different interface.
3925 if (net->mtu == 0) {
3926 switch (newaddr->sa_family) {
3929 net->mtu = SCTP_DEFAULT_MTU;
3942 net->mtu -= (uint32_t) sizeof(struct udphdr);
3944 if (from == SCTP_ALLOC_ASOC) {
3945 stcb->asoc.smallest_mtu = net->mtu;
3947 if (stcb->asoc.smallest_mtu > net->mtu) {
3948 stcb->asoc.smallest_mtu = net->mtu;
3951 if (newaddr->sa_family == AF_INET6) {
3952 struct sockaddr_in6 *sin6;
3954 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3955 (void)sa6_recoverscope(sin6);
3959 /* JRS - Use the congestion control given in the CC module */
3960 if (stcb->asoc.cc_functions.sctp_set_initial_cc_param != NULL)
3961 (*stcb->asoc.cc_functions.sctp_set_initial_cc_param) (stcb, net);
3964 * CMT: CUC algo - set find_pseudo_cumack to TRUE (1) at beginning
3965 * of assoc (2005/06/27, iyengar@cis.udel.edu)
3967 net->find_pseudo_cumack = 1;
3968 net->find_rtx_pseudo_cumack = 1;
3969 net->src_addr_selected = 0;
3970 /* Choose an initial flowid. */
3971 net->flowid = stcb->asoc.my_vtag ^
3972 ntohs(stcb->rport) ^
3973 ntohs(stcb->sctp_ep->sctp_lport);
3980 netfirst = TAILQ_FIRST(&stcb->asoc.nets);
3981 if (net->ro.ro_rt == NULL) {
3982 /* Since we have no route put it at the back */
3983 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
3984 } else if (netfirst == NULL) {
3985 /* We are the first one in the pool. */
3986 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
3987 } else if (netfirst->ro.ro_rt == NULL) {
3989 * First one has NO route. Place this one ahead of the first
3992 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
3993 } else if (net->ro.ro_rt->rt_ifp != netfirst->ro.ro_rt->rt_ifp) {
3995 * This one has a different interface than the one at the
3996 * top of the list. Place it ahead.
3998 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4001 * Ok we have the same interface as the first one. Move
4002 * forward until we find either a) one with a NULL route...
4003 * insert ahead of that b) one with a different ifp.. insert
4004 * after that. c) end of the list.. insert at the tail.
4006 struct sctp_nets *netlook;
4009 netlook = TAILQ_NEXT(netfirst, sctp_next);
4010 if (netlook == NULL) {
4011 /* End of the list */
4012 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4014 } else if (netlook->ro.ro_rt == NULL) {
4015 /* next one has NO route */
4016 TAILQ_INSERT_BEFORE(netfirst, net, sctp_next);
4018 } else if (netlook->ro.ro_rt->rt_ifp != net->ro.ro_rt->rt_ifp) {
4019 TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook,
4025 } while (netlook != NULL);
4028 /* got to have a primary set */
4029 if (stcb->asoc.primary_destination == 0) {
4030 stcb->asoc.primary_destination = net;
4031 } else if ((stcb->asoc.primary_destination->ro.ro_rt == NULL) &&
4033 ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
4034 /* No route to current primary adopt new primary */
4035 stcb->asoc.primary_destination = net;
4037 /* Validate primary is first */
4038 net = TAILQ_FIRST(&stcb->asoc.nets);
4039 if ((net != stcb->asoc.primary_destination) &&
4040 (stcb->asoc.primary_destination)) {
4042 * first one on the list is NOT the primary sctp_cmpaddr()
4043 * is much more efficient if the primary is the first on the
4046 TAILQ_REMOVE(&stcb->asoc.nets,
4047 stcb->asoc.primary_destination, sctp_next);
4048 TAILQ_INSERT_HEAD(&stcb->asoc.nets,
4049 stcb->asoc.primary_destination, sctp_next);
4056 sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
4059 struct sctpasochead *head;
4060 struct sctp_tcb *lstcb;
4062 SCTP_INP_WLOCK(inp);
4064 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
4066 SCTP_INP_WUNLOCK(inp);
4070 * We don't allow assoc id to be one of SCTP_FUTURE_ASSOC,
4071 * SCTP_CURRENT_ASSOC and SCTP_ALL_ASSOC.
4073 if (inp->sctp_associd_counter <= SCTP_ALL_ASSOC) {
4074 inp->sctp_associd_counter = SCTP_ALL_ASSOC + 1;
4076 id = inp->sctp_associd_counter;
4077 inp->sctp_associd_counter++;
4078 lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t) id, 0);
4082 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
4083 LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash);
4084 stcb->asoc.in_asocid_hash = 1;
4085 SCTP_INP_WUNLOCK(inp);
4090 * allocate an association and add it to the endpoint. The caller must be
4091 * careful to add all additional addresses once they are know right away or
4092 * else the assoc will be may experience a blackout scenario.
4095 sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
4096 int *error, uint32_t override_tag, uint32_t vrf_id,
4100 /* note the p argument is only valid in unbound sockets */
4102 struct sctp_tcb *stcb;
4103 struct sctp_association *asoc;
4104 struct sctpasochead *head;
4109 * Assumption made here: Caller has done a
4110 * sctp_findassociation_ep_addr(ep, addr's); to make sure the
4111 * address does not exist already.
4113 if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) {
4114 /* Hit max assoc, sorry no more */
4115 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4119 if (firstaddr == NULL) {
4120 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4124 SCTP_INP_RLOCK(inp);
4125 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
4126 ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) ||
4127 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4129 * If its in the TCP pool, its NOT allowed to create an
4130 * association. The parent listener needs to call
4131 * sctp_aloc_assoc.. or the one-2-many socket. If a peeled
4132 * off, or connected one does this.. its an error.
4134 SCTP_INP_RUNLOCK(inp);
4135 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4139 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
4140 (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)) {
4141 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) ||
4142 (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED)) {
4143 SCTP_INP_RUNLOCK(inp);
4144 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4149 SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:");
4152 SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr);
4153 switch (firstaddr->sa_family) {
4156 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4157 ntohs(((struct sockaddr_in *)firstaddr)->sin_port));
4162 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4163 ntohs(((struct sockaddr_in6 *)firstaddr)->sin6_port));
4170 SCTPDBG(SCTP_DEBUG_PCB3, "None\n");
4172 #endif /* SCTP_DEBUG */
4173 switch (firstaddr->sa_family) {
4177 struct sockaddr_in *sin;
4179 sin = (struct sockaddr_in *)firstaddr;
4180 if ((ntohs(sin->sin_port) == 0) ||
4181 (sin->sin_addr.s_addr == INADDR_ANY) ||
4182 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
4183 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
4184 /* Invalid address */
4185 SCTP_INP_RUNLOCK(inp);
4186 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4190 rport = sin->sin_port;
4197 struct sockaddr_in6 *sin6;
4199 sin6 = (struct sockaddr_in6 *)firstaddr;
4200 if ((ntohs(sin6->sin6_port) == 0) ||
4201 IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
4202 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
4203 /* Invalid address */
4204 SCTP_INP_RUNLOCK(inp);
4205 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4209 rport = sin6->sin6_port;
4214 /* not supported family type */
4215 SCTP_INP_RUNLOCK(inp);
4216 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4220 SCTP_INP_RUNLOCK(inp);
4221 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4223 * If you have not performed a bind, then we need to do the
4224 * ephemeral bind for you.
4226 if ((err = sctp_inpcb_bind(inp->sctp_socket,
4227 (struct sockaddr *)NULL,
4228 (struct sctp_ifa *)NULL,
4231 /* bind error, probably perm */
4236 stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb);
4238 /* out of memory? */
4239 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
4243 SCTP_INCR_ASOC_COUNT();
4245 bzero(stcb, sizeof(*stcb));
4248 asoc->assoc_id = sctp_aloc_a_assoc_id(inp, stcb);
4249 SCTP_TCB_LOCK_INIT(stcb);
4250 SCTP_TCB_SEND_LOCK_INIT(stcb);
4251 stcb->rport = rport;
4252 /* setup back pointer's */
4253 stcb->sctp_ep = inp;
4254 stcb->sctp_socket = inp->sctp_socket;
4255 if ((err = sctp_init_asoc(inp, stcb, override_tag, vrf_id))) {
4257 SCTP_TCB_LOCK_DESTROY(stcb);
4258 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4259 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4260 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4261 SCTP_DECR_ASOC_COUNT();
4266 SCTP_INP_INFO_WLOCK();
4267 SCTP_INP_WLOCK(inp);
4268 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
4269 /* inpcb freed while alloc going on */
4270 SCTP_TCB_LOCK_DESTROY(stcb);
4271 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4272 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4273 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4274 SCTP_INP_WUNLOCK(inp);
4275 SCTP_INP_INFO_WUNLOCK();
4276 SCTP_DECR_ASOC_COUNT();
4277 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4281 SCTP_TCB_LOCK(stcb);
4283 /* now that my_vtag is set, add it to the hash */
4284 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))];
4285 /* put it in the bucket in the vtag hash of assoc's for the system */
4286 LIST_INSERT_HEAD(head, stcb, sctp_asocs);
4287 SCTP_INP_INFO_WUNLOCK();
4289 if ((err = sctp_add_remote_addr(stcb, firstaddr, NULL, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC))) {
4290 /* failure.. memory error? */
4291 if (asoc->strmout) {
4292 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4293 asoc->strmout = NULL;
4295 if (asoc->mapping_array) {
4296 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4297 asoc->mapping_array = NULL;
4299 if (asoc->nr_mapping_array) {
4300 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4301 asoc->nr_mapping_array = NULL;
4303 SCTP_DECR_ASOC_COUNT();
4304 SCTP_TCB_UNLOCK(stcb);
4305 SCTP_TCB_LOCK_DESTROY(stcb);
4306 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4307 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4308 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4309 SCTP_INP_WUNLOCK(inp);
4310 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4314 /* Init all the timers */
4315 SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer);
4316 SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer);
4317 SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer);
4318 SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer);
4319 SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer);
4320 SCTP_OS_TIMER_INIT(&asoc->delayed_event_timer.timer);
4321 SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer);
4323 LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist);
4324 /* now file the port under the hash as well */
4325 if (inp->sctp_tcbhash != NULL) {
4326 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport,
4327 inp->sctp_hashmark)];
4328 LIST_INSERT_HEAD(head, stcb, sctp_tcbhash);
4330 SCTP_INP_WUNLOCK(inp);
4331 SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", (void *)stcb);
4337 sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
4339 struct sctp_association *asoc;
4343 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4344 if (net == asoc->primary_destination) {
4346 struct sctp_nets *lnet;
4348 lnet = TAILQ_FIRST(&asoc->nets);
4350 * Mobility adaptation Ideally, if deleted destination is
4351 * the primary, it becomes a fast retransmission trigger by
4352 * the subsequent SET PRIMARY. (by micchie)
4354 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
4355 SCTP_MOBILITY_BASE) ||
4356 sctp_is_mobility_feature_on(stcb->sctp_ep,
4357 SCTP_MOBILITY_FASTHANDOFF)) {
4358 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n");
4359 if (asoc->deleted_primary != NULL) {
4360 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n");
4363 asoc->deleted_primary = net;
4364 atomic_add_int(&net->ref_count, 1);
4365 memset(&net->lastsa, 0, sizeof(net->lastsa));
4366 memset(&net->lastsv, 0, sizeof(net->lastsv));
4367 sctp_mobility_feature_on(stcb->sctp_ep,
4368 SCTP_MOBILITY_PRIM_DELETED);
4369 sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED,
4370 stcb->sctp_ep, stcb, NULL);
4373 /* Try to find a confirmed primary */
4374 asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0);
4376 if (net == asoc->last_data_chunk_from) {
4378 asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets);
4380 if (net == asoc->last_control_chunk_from) {
4382 asoc->last_control_chunk_from = NULL;
4384 if (net == stcb->asoc.alternate) {
4385 sctp_free_remote_addr(stcb->asoc.alternate);
4386 stcb->asoc.alternate = NULL;
4388 sctp_free_remote_addr(net);
4392 * remove a remote endpoint address from an association, it will fail if the
4393 * address does not exist.
4396 sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
4399 * Here we need to remove a remote address. This is quite simple, we
4400 * first find it in the list of address for the association
4401 * (tasoc->asoc.nets) and then if it is there, we do a LIST_REMOVE
4402 * on that item. Note we do not allow it to be removed if there are
4403 * no other addresses.
4405 struct sctp_association *asoc;
4406 struct sctp_nets *net, *nnet;
4410 /* locate the address */
4411 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
4412 if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) {
4415 if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr,
4417 /* we found the guy */
4418 if (asoc->numnets < 2) {
4419 /* Must have at LEAST two remote addresses */
4422 sctp_remove_net(stcb, net);
4432 sctp_delete_from_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4434 struct sctpvtaghead *chain;
4435 struct sctp_tagblock *twait_block;
4439 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4440 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4441 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4442 if ((twait_block->vtag_block[i].v_tag == tag) &&
4443 (twait_block->vtag_block[i].lport == lport) &&
4444 (twait_block->vtag_block[i].rport == rport)) {
4445 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4446 twait_block->vtag_block[i].v_tag = 0;
4447 twait_block->vtag_block[i].lport = 0;
4448 twait_block->vtag_block[i].rport = 0;
4459 sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4461 struct sctpvtaghead *chain;
4462 struct sctp_tagblock *twait_block;
4466 SCTP_INP_INFO_WLOCK();
4467 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4468 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4469 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4470 if ((twait_block->vtag_block[i].v_tag == tag) &&
4471 (twait_block->vtag_block[i].lport == lport) &&
4472 (twait_block->vtag_block[i].rport == rport)) {
4480 SCTP_INP_INFO_WUNLOCK();
4486 sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport)
4488 struct sctpvtaghead *chain;
4489 struct sctp_tagblock *twait_block;
4497 (void)SCTP_GETTIME_TIMEVAL(&now);
4498 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4500 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4501 /* Block(s) present, lets find space, and expire on the fly */
4502 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4503 if ((twait_block->vtag_block[i].v_tag == 0) &&
4505 twait_block->vtag_block[i].tv_sec_at_expire =
4507 twait_block->vtag_block[i].v_tag = tag;
4508 twait_block->vtag_block[i].lport = lport;
4509 twait_block->vtag_block[i].rport = rport;
4511 } else if ((twait_block->vtag_block[i].v_tag) &&
4512 ((long)twait_block->vtag_block[i].tv_sec_at_expire < now.tv_sec)) {
4513 /* Audit expires this guy */
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;
4519 /* Reuse it for my new tag */
4520 twait_block->vtag_block[i].tv_sec_at_expire = now.tv_sec + time;
4521 twait_block->vtag_block[i].v_tag = tag;
4522 twait_block->vtag_block[i].lport = lport;
4523 twait_block->vtag_block[i].rport = rport;
4530 * We only do up to the block where we can place our
4536 /* Need to add a new block to chain */
4538 SCTP_MALLOC(twait_block, struct sctp_tagblock *,
4539 sizeof(struct sctp_tagblock), SCTP_M_TIMW);
4540 if (twait_block == NULL) {
4542 panic("Can not alloc tagblock");
4546 memset(twait_block, 0, sizeof(struct sctp_tagblock));
4547 LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock);
4548 twait_block->vtag_block[0].tv_sec_at_expire = now.tv_sec + time;
4549 twait_block->vtag_block[0].v_tag = tag;
4550 twait_block->vtag_block[0].lport = lport;
4551 twait_block->vtag_block[0].rport = rport;
4558 * Free the association after un-hashing the remote port. This
4559 * function ALWAYS returns holding NO LOCK on the stcb. It DOES
4560 * expect that the input to this function IS a locked TCB.
4561 * It will return 0, if it did NOT destroy the association (instead
4562 * it unlocks it. It will return NON-zero if it either destroyed the
4563 * association OR the association is already destroyed.
4566 sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
4569 struct sctp_association *asoc;
4570 struct sctp_nets *net, *nnet;
4571 struct sctp_laddr *laddr, *naddr;
4572 struct sctp_tmit_chunk *chk, *nchk;
4573 struct sctp_asconf_addr *aparam, *naparam;
4574 struct sctp_asconf_ack *aack, *naack;
4575 struct sctp_stream_reset_list *strrst, *nstrrst;
4576 struct sctp_queued_to_read *sq, *nsq;
4577 struct sctp_stream_queue_pending *sp, *nsp;
4578 sctp_sharedkey_t *shared_key, *nshared_key;
4581 /* first, lets purge the entry from the hash table. */
4583 #ifdef SCTP_LOG_CLOSING
4584 sctp_log_closing(inp, stcb, 6);
4586 if (stcb->asoc.state == 0) {
4587 #ifdef SCTP_LOG_CLOSING
4588 sctp_log_closing(inp, NULL, 7);
4590 /* there is no asoc, really TSNH :-0 */
4593 if (stcb->asoc.alternate) {
4594 sctp_free_remote_addr(stcb->asoc.alternate);
4595 stcb->asoc.alternate = NULL;
4598 if (stcb->freed_from_where == 0) {
4599 /* Only record the first place free happened from */
4600 stcb->freed_from_where = from_location;
4605 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4606 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4607 /* nothing around */
4610 so = inp->sctp_socket;
4613 * We used timer based freeing if a reader or writer is in the way.
4614 * So we first check if we are actually being called from a timer,
4615 * if so we abort early if a reader or writer is still in the way.
4617 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
4618 (from_inpcbfree == SCTP_NORMAL_PROC)) {
4620 * is it the timer driving us? if so are the reader/writers
4623 if (stcb->asoc.refcnt) {
4624 /* nope, reader or writer in the way */
4625 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4626 /* no asoc destroyed */
4627 SCTP_TCB_UNLOCK(stcb);
4628 #ifdef SCTP_LOG_CLOSING
4629 sctp_log_closing(inp, stcb, 8);
4634 /* now clean up any other timers */
4635 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4636 asoc->dack_timer.self = NULL;
4637 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4639 * For stream reset we don't blast this unless
4640 * it is a str-reset timer, it might be the
4641 * free-asoc timer which we DON'T want to
4644 if (asoc->strreset_timer.type == SCTP_TIMER_TYPE_STRRESET)
4645 asoc->strreset_timer.self = NULL;
4646 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4647 asoc->asconf_timer.self = NULL;
4648 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4649 asoc->autoclose_timer.self = NULL;
4650 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4651 asoc->shut_guard_timer.self = NULL;
4652 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4653 asoc->delayed_event_timer.self = NULL;
4654 /* Mobility adaptation */
4655 (void)SCTP_OS_TIMER_STOP(&asoc->delete_prim_timer.timer);
4656 asoc->delete_prim_timer.self = NULL;
4657 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4658 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4659 net->rxt_timer.self = NULL;
4660 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4661 net->pmtu_timer.self = NULL;
4662 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4663 net->hb_timer.self = NULL;
4665 /* Now the read queue needs to be cleaned up (only once) */
4666 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) {
4667 stcb->asoc.state |= SCTP_STATE_ABOUT_TO_BE_FREED;
4668 SCTP_INP_READ_LOCK(inp);
4669 TAILQ_FOREACH(sq, &inp->read_queue, next) {
4670 if (sq->stcb == stcb) {
4671 sq->do_not_ref_stcb = 1;
4672 sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
4674 * If there is no end, there never will be
4677 if (sq->end_added == 0) {
4678 /* Held for PD-API clear that. */
4679 sq->pdapi_aborted = 1;
4680 sq->held_length = 0;
4681 if (sctp_stcb_is_feature_on(inp, stcb, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) {
4683 * Need to add a PD-API
4684 * aborted indication.
4685 * Setting the control_pdapi
4686 * assures that it will be
4687 * added right after this
4692 stcb->asoc.control_pdapi = sq;
4693 strseq = (sq->sinfo_stream << 16) | sq->sinfo_ssn;
4694 sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION,
4696 SCTP_PARTIAL_DELIVERY_ABORTED,
4699 stcb->asoc.control_pdapi = NULL;
4702 /* Add an end to wake them */
4706 SCTP_INP_READ_UNLOCK(inp);
4707 if (stcb->block_entry) {
4708 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET);
4709 stcb->block_entry->error = ECONNRESET;
4710 stcb->block_entry = NULL;
4713 if ((stcb->asoc.refcnt) || (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE)) {
4715 * Someone holds a reference OR the socket is unaccepted
4718 if ((stcb->asoc.refcnt) ||
4719 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4720 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4721 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4722 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4724 SCTP_TCB_UNLOCK(stcb);
4725 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4726 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4727 /* nothing around */
4730 /* Wake any reader/writers */
4731 sctp_sorwakeup(inp, so);
4732 sctp_sowwakeup(inp, so);
4734 #ifdef SCTP_LOG_CLOSING
4735 sctp_log_closing(inp, stcb, 9);
4737 /* no asoc destroyed */
4740 #ifdef SCTP_LOG_CLOSING
4741 sctp_log_closing(inp, stcb, 10);
4744 * When I reach here, no others want to kill the assoc yet.. and I
4745 * own the lock. Now its possible an abort comes in when I do the
4746 * lock exchange below to grab all the locks to do the final take
4747 * out. to prevent this we increment the count, which will start a
4748 * timer and blow out above thus assuring us that we hold exclusive
4749 * killing of the asoc. Note that after getting back the TCB lock we
4750 * will go ahead and increment the counter back up and stop any
4751 * timer a passing stranger may have started :-S
4753 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4754 atomic_add_int(&stcb->asoc.refcnt, 1);
4756 SCTP_TCB_UNLOCK(stcb);
4757 SCTP_INP_INFO_WLOCK();
4758 SCTP_INP_WLOCK(inp);
4759 SCTP_TCB_LOCK(stcb);
4761 /* Double check the GONE flag */
4762 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4763 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4764 /* nothing around */
4767 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
4768 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4770 * For TCP type we need special handling when we are
4771 * connected. We also include the peel'ed off ones to.
4773 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4774 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED;
4775 inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED;
4778 if (so->so_rcv.sb_cc == 0) {
4779 so->so_state &= ~(SS_ISCONNECTING |
4780 SS_ISDISCONNECTING |
4784 socantrcvmore_locked(so);
4785 sctp_sowwakeup(inp, so);
4786 sctp_sorwakeup(inp, so);
4792 * Make it invalid too, that way if its about to run it will abort
4795 /* re-increment the lock */
4796 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4797 atomic_add_int(&stcb->asoc.refcnt, -1);
4799 if (stcb->asoc.refcnt) {
4800 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4801 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4802 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4803 SCTP_INP_INFO_WUNLOCK();
4804 SCTP_INP_WUNLOCK(inp);
4806 SCTP_TCB_UNLOCK(stcb);
4810 if (inp->sctp_tcbhash) {
4811 LIST_REMOVE(stcb, sctp_tcbhash);
4813 if (stcb->asoc.in_asocid_hash) {
4814 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4816 /* Now lets remove it from the list of ALL associations in the EP */
4817 LIST_REMOVE(stcb, sctp_tcblist);
4818 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4819 SCTP_INP_INCR_REF(inp);
4820 SCTP_INP_WUNLOCK(inp);
4822 /* pull from vtag hash */
4823 LIST_REMOVE(stcb, sctp_asocs);
4824 sctp_add_vtag_to_timewait(asoc->my_vtag, SCTP_BASE_SYSCTL(sctp_vtag_time_wait),
4825 inp->sctp_lport, stcb->rport);
4828 * Now restop the timers to be sure this is paranoia at is finest!
4830 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4831 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4832 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4833 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4834 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4835 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4836 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4837 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4838 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4839 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4840 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4843 asoc->strreset_timer.type = SCTP_TIMER_TYPE_NONE;
4845 * The chunk lists and such SHOULD be empty but we check them just
4848 /* anything on the wheel needs to be removed */
4849 for (i = 0; i < asoc->streamoutcnt; i++) {
4850 struct sctp_stream_out *outs;
4852 outs = &asoc->strmout[i];
4853 /* now clean up any chunks here */
4854 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
4855 TAILQ_REMOVE(&outs->outqueue, sp, next);
4856 sctp_free_spbufspace(stcb, asoc, sp);
4859 /* Still an open socket - report */
4860 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
4861 0, (void *)sp, SCTP_SO_LOCKED);
4864 sctp_m_freem(sp->data);
4866 sp->tail_mbuf = NULL;
4871 sctp_free_remote_addr(sp->net);
4874 sctp_free_a_strmoq(stcb, sp, SCTP_SO_LOCKED);
4877 /* sa_ignore FREED_MEMORY */
4878 TAILQ_FOREACH_SAFE(strrst, &asoc->resetHead, next_resp, nstrrst) {
4879 TAILQ_REMOVE(&asoc->resetHead, strrst, next_resp);
4880 SCTP_FREE(strrst, SCTP_M_STRESET);
4882 TAILQ_FOREACH_SAFE(sq, &asoc->pending_reply_queue, next, nsq) {
4883 TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
4885 sctp_m_freem(sq->data);
4888 sctp_free_remote_addr(sq->whoFrom);
4891 /* Free the ctl entry */
4892 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
4893 SCTP_DECR_READQ_COUNT();
4894 /* sa_ignore FREED_MEMORY */
4896 TAILQ_FOREACH_SAFE(chk, &asoc->free_chunks, sctp_next, nchk) {
4897 TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next);
4899 sctp_m_freem(chk->data);
4902 if (chk->holds_key_ref)
4903 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4904 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4905 SCTP_DECR_CHK_COUNT();
4906 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1);
4907 asoc->free_chunk_cnt--;
4908 /* sa_ignore FREED_MEMORY */
4910 /* pending send queue SHOULD be empty */
4911 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
4912 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
4913 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
4916 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
4919 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
4922 /* Still a socket? */
4923 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
4924 0, chk, SCTP_SO_LOCKED);
4927 sctp_m_freem(chk->data);
4931 if (chk->holds_key_ref)
4932 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4934 sctp_free_remote_addr(chk->whoTo);
4937 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4938 SCTP_DECR_CHK_COUNT();
4939 /* sa_ignore FREED_MEMORY */
4941 /* sent queue SHOULD be empty */
4942 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
4943 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
4944 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
4945 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
4948 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
4952 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
4955 /* Still a socket? */
4956 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
4957 0, chk, SCTP_SO_LOCKED);
4960 sctp_m_freem(chk->data);
4964 if (chk->holds_key_ref)
4965 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4966 sctp_free_remote_addr(chk->whoTo);
4967 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4968 SCTP_DECR_CHK_COUNT();
4969 /* sa_ignore FREED_MEMORY */
4972 for (i = 0; i < stcb->asoc.streamoutcnt; i++) {
4973 if (stcb->asoc.strmout[i].chunks_on_queues > 0) {
4974 panic("%u chunks left for stream %u.", stcb->asoc.strmout[i].chunks_on_queues, i);
4978 /* control queue MAY not be empty */
4979 TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) {
4980 TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next);
4982 sctp_m_freem(chk->data);
4985 if (chk->holds_key_ref)
4986 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4987 sctp_free_remote_addr(chk->whoTo);
4988 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4989 SCTP_DECR_CHK_COUNT();
4990 /* sa_ignore FREED_MEMORY */
4992 /* ASCONF queue MAY not be empty */
4993 TAILQ_FOREACH_SAFE(chk, &asoc->asconf_send_queue, sctp_next, nchk) {
4994 TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next);
4996 sctp_m_freem(chk->data);
4999 if (chk->holds_key_ref)
5000 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5001 sctp_free_remote_addr(chk->whoTo);
5002 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5003 SCTP_DECR_CHK_COUNT();
5004 /* sa_ignore FREED_MEMORY */
5006 TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) {
5007 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
5009 sctp_m_freem(chk->data);
5012 if (chk->holds_key_ref)
5013 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5014 sctp_free_remote_addr(chk->whoTo);
5015 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5016 SCTP_DECR_CHK_COUNT();
5017 /* sa_ignore FREED_MEMORY */
5020 if (asoc->mapping_array) {
5021 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
5022 asoc->mapping_array = NULL;
5024 if (asoc->nr_mapping_array) {
5025 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
5026 asoc->nr_mapping_array = NULL;
5028 /* the stream outs */
5029 if (asoc->strmout) {
5030 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
5031 asoc->strmout = NULL;
5033 asoc->strm_realoutsize = asoc->streamoutcnt = 0;
5035 struct sctp_queued_to_read *ctl, *nctl;
5037 for (i = 0; i < asoc->streamincnt; i++) {
5038 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[i].inqueue, next, nctl) {
5039 TAILQ_REMOVE(&asoc->strmin[i].inqueue, ctl, next);
5040 sctp_free_remote_addr(ctl->whoFrom);
5042 sctp_m_freem(ctl->data);
5046 * We don't free the address here since all
5047 * the net's were freed above.
5049 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
5050 SCTP_DECR_READQ_COUNT();
5053 SCTP_FREE(asoc->strmin, SCTP_M_STRMI);
5054 asoc->strmin = NULL;
5056 asoc->streamincnt = 0;
5057 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
5059 if (SCTP_BASE_INFO(ipi_count_raddr) == 0) {
5060 panic("no net's left alloc'ed, or list points to itself");
5063 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
5064 sctp_free_remote_addr(net);
5066 LIST_FOREACH_SAFE(laddr, &asoc->sctp_restricted_addrs, sctp_nxt_addr, naddr) {
5067 /* sa_ignore FREED_MEMORY */
5068 sctp_remove_laddr(laddr);
5071 /* pending asconf (address) parameters */
5072 TAILQ_FOREACH_SAFE(aparam, &asoc->asconf_queue, next, naparam) {
5073 /* sa_ignore FREED_MEMORY */
5074 TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
5075 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
5077 TAILQ_FOREACH_SAFE(aack, &asoc->asconf_ack_sent, next, naack) {
5078 /* sa_ignore FREED_MEMORY */
5079 TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
5080 if (aack->data != NULL) {
5081 sctp_m_freem(aack->data);
5083 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
5085 /* clean up auth stuff */
5086 if (asoc->local_hmacs)
5087 sctp_free_hmaclist(asoc->local_hmacs);
5088 if (asoc->peer_hmacs)
5089 sctp_free_hmaclist(asoc->peer_hmacs);
5091 if (asoc->local_auth_chunks)
5092 sctp_free_chunklist(asoc->local_auth_chunks);
5093 if (asoc->peer_auth_chunks)
5094 sctp_free_chunklist(asoc->peer_auth_chunks);
5096 sctp_free_authinfo(&asoc->authinfo);
5098 LIST_FOREACH_SAFE(shared_key, &asoc->shared_keys, next, nshared_key) {
5099 LIST_REMOVE(shared_key, next);
5100 sctp_free_sharedkey(shared_key);
5101 /* sa_ignore FREED_MEMORY */
5104 /* Insert new items here :> */
5106 /* Get rid of LOCK */
5107 SCTP_TCB_UNLOCK(stcb);
5108 SCTP_TCB_LOCK_DESTROY(stcb);
5109 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
5110 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5111 SCTP_INP_INFO_WUNLOCK();
5112 SCTP_INP_RLOCK(inp);
5114 #ifdef SCTP_TRACK_FREED_ASOCS
5115 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5116 /* now clean up the tasoc itself */
5117 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5118 SCTP_DECR_ASOC_COUNT();
5120 LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist);
5123 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5124 SCTP_DECR_ASOC_COUNT();
5126 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5127 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5129 * If its NOT the inp_free calling us AND sctp_close
5130 * as been called, we call back...
5132 SCTP_INP_RUNLOCK(inp);
5134 * This will start the kill timer (if we are the
5135 * last one) since we hold an increment yet. But
5136 * this is the only safe way to do this since
5137 * otherwise if the socket closes at the same time
5138 * we are here we might collide in the cleanup.
5140 sctp_inpcb_free(inp,
5141 SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
5142 SCTP_CALLED_DIRECTLY_NOCMPSET);
5143 SCTP_INP_DECR_REF(inp);
5146 /* The socket is still open. */
5147 SCTP_INP_DECR_REF(inp);
5150 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5151 SCTP_INP_RUNLOCK(inp);
5154 /* destroyed the asoc */
5155 #ifdef SCTP_LOG_CLOSING
5156 sctp_log_closing(inp, NULL, 11);
5164 * determine if a destination is "reachable" based upon the addresses bound
5165 * to the current endpoint (e.g. only v4 or v6 currently bound)
5168 * FIX: if we allow assoc-level bindx(), then this needs to be fixed to use
5169 * assoc level v4/v6 flags, as the assoc *may* not have the same address
5170 * types bound as its endpoint
5173 sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
5175 struct sctp_inpcb *inp;
5179 * No locks here, the TCB, in all cases is already locked and an
5180 * assoc is up. There is either a INP lock by the caller applied (in
5181 * asconf case when deleting an address) or NOT in the HB case,
5182 * however if HB then the INP increment is up and the INP will not
5183 * be removed (on top of the fact that we have a TCB lock). So we
5184 * only want to read the sctp_flags, which is either bound-all or
5185 * not.. no protection needed since once an assoc is up you can't be
5186 * changing your binding.
5188 inp = stcb->sctp_ep;
5189 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5190 /* if bound all, destination is not restricted */
5192 * RRS: Question during lock work: Is this correct? If you
5193 * are bound-all you still might need to obey the V4--V6
5194 * flags??? IMO this bound-all stuff needs to be removed!
5198 /* NOTE: all "scope" checks are done when local addresses are added */
5199 switch (destaddr->sa_family) {
5202 answer = inp->ip_inp.inp.inp_vflag & INP_IPV6;
5207 answer = inp->ip_inp.inp.inp_vflag & INP_IPV4;
5211 /* invalid family, so it's unreachable */
5219 * update the inp_vflags on an endpoint
5222 sctp_update_ep_vflag(struct sctp_inpcb *inp)
5224 struct sctp_laddr *laddr;
5226 /* first clear the flag */
5227 inp->ip_inp.inp.inp_vflag = 0;
5228 /* set the flag based on addresses on the ep list */
5229 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5230 if (laddr->ifa == NULL) {
5231 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
5235 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
5238 switch (laddr->ifa->address.sa.sa_family) {
5241 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5246 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5256 * Add the address to the endpoint local address list There is nothing to be
5257 * done if we are bound to all addresses
5260 sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
5262 struct sctp_laddr *laddr;
5267 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5268 /* You are already bound to all. You have it already */
5272 if (ifa->address.sa.sa_family == AF_INET6) {
5273 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5274 /* Can't bind a non-useable addr. */
5279 /* first, is it already present? */
5280 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5281 if (laddr->ifa == ifa) {
5288 /* Not in the ep list */
5289 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action);
5293 /* update inp_vflag flags */
5294 switch (ifa->address.sa.sa_family) {
5297 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5302 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5314 * select a new (hopefully reachable) destination net (should only be used
5315 * when we deleted an ep addr that is the only usable source address to reach
5316 * the destination net)
5319 sctp_select_primary_destination(struct sctp_tcb *stcb)
5321 struct sctp_nets *net;
5323 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5324 /* for now, we'll just pick the first reachable one we find */
5325 if (net->dest_state & SCTP_ADDR_UNCONFIRMED)
5327 if (sctp_destination_is_reachable(stcb,
5328 (struct sockaddr *)&net->ro._l_addr)) {
5329 /* found a reachable destination */
5330 stcb->asoc.primary_destination = net;
5333 /* I can't there from here! ...we're gonna die shortly... */
5338 * Delete the address from the endpoint local address list There is nothing
5339 * to be done if we are bound to all addresses
5342 sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa)
5344 struct sctp_laddr *laddr;
5348 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5349 /* You are already bound to all. You have it already */
5352 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5353 if (laddr->ifa == ifa) {
5358 if (fnd && (inp->laddr_count < 2)) {
5359 /* can't delete unless there are at LEAST 2 addresses */
5364 * clean up any use of this address go through our
5365 * associations and clear any last_used_address that match
5366 * this one for each assoc, see if a new primary_destination
5369 struct sctp_tcb *stcb;
5371 /* clean up "next_addr_touse" */
5372 if (inp->next_addr_touse == laddr)
5373 /* delete this address */
5374 inp->next_addr_touse = NULL;
5376 /* clean up "last_used_address" */
5377 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5378 struct sctp_nets *net;
5380 SCTP_TCB_LOCK(stcb);
5381 if (stcb->asoc.last_used_address == laddr)
5382 /* delete this address */
5383 stcb->asoc.last_used_address = NULL;
5385 * Now spin through all the nets and purge any ref
5388 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5389 if (net->ro._s_addr &&
5390 (net->ro._s_addr->ifa == laddr->ifa)) {
5391 /* Yep, purge src address selected */
5394 /* delete this address if cached */
5398 net->ro.ro_rt = NULL;
5400 sctp_free_ifa(net->ro._s_addr);
5401 net->ro._s_addr = NULL;
5402 net->src_addr_selected = 0;
5405 SCTP_TCB_UNLOCK(stcb);
5406 } /* for each tcb */
5407 /* remove it from the ep list */
5408 sctp_remove_laddr(laddr);
5410 /* update inp_vflag flags */
5411 sctp_update_ep_vflag(inp);
5417 * Add the address to the TCB local address restricted list.
5418 * This is a "pending" address list (eg. addresses waiting for an
5419 * ASCONF-ACK response) and cannot be used as a valid source address.
5422 sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5424 struct sctp_laddr *laddr;
5425 struct sctpladdr *list;
5428 * Assumes TCB is locked.. and possibly the INP. May need to
5429 * confirm/fix that if we need it and is not the case.
5431 list = &stcb->asoc.sctp_restricted_addrs;
5434 if (ifa->address.sa.sa_family == AF_INET6) {
5435 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5436 /* Can't bind a non-existent addr. */
5441 /* does the address already exist? */
5442 LIST_FOREACH(laddr, list, sctp_nxt_addr) {
5443 if (laddr->ifa == ifa) {
5448 /* add to the list */
5449 (void)sctp_insert_laddr(list, ifa, 0);
5454 * insert an laddr entry with the given ifa for the desired list
5457 sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
5459 struct sctp_laddr *laddr;
5461 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
5462 if (laddr == NULL) {
5463 /* out of memory? */
5464 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
5467 SCTP_INCR_LADDR_COUNT();
5468 bzero(laddr, sizeof(*laddr));
5469 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
5471 laddr->action = act;
5472 atomic_add_int(&ifa->refcount, 1);
5474 LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr);
5480 * Remove an laddr entry from the local address list (on an assoc)
5483 sctp_remove_laddr(struct sctp_laddr *laddr)
5486 /* remove from the list */
5487 LIST_REMOVE(laddr, sctp_nxt_addr);
5488 sctp_free_ifa(laddr->ifa);
5489 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr);
5490 SCTP_DECR_LADDR_COUNT();
5494 * Remove a local address from the TCB local address restricted list
5497 sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5499 struct sctp_inpcb *inp;
5500 struct sctp_laddr *laddr;
5503 * This is called by asconf work. It is assumed that a) The TCB is
5504 * locked and b) The INP is locked. This is true in as much as I can
5505 * trace through the entry asconf code where I did these locks.
5506 * Again, the ASCONF code is a bit different in that it does lock
5507 * the INP during its work often times. This must be since we don't
5508 * want other proc's looking up things while what they are looking
5509 * up is changing :-D
5512 inp = stcb->sctp_ep;
5513 /* if subset bound and don't allow ASCONF's, can't delete last */
5514 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
5515 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
5516 if (stcb->sctp_ep->laddr_count < 2) {
5517 /* can't delete last address */
5521 LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
5522 /* remove the address if it exists */
5523 if (laddr->ifa == NULL)
5525 if (laddr->ifa == ifa) {
5526 sctp_remove_laddr(laddr);
5531 /* address not found! */
5536 * Temporarily remove for __APPLE__ until we use the Tiger equivalents
5539 static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;
5540 static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR;
5544 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5545 struct sctp_mcore_ctrl *sctp_mcore_workers = NULL;
5546 int *sctp_cpuarry = NULL;
5548 sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use)
5550 /* Queue a packet to a processor for the specified core */
5551 struct sctp_mcore_queue *qent;
5552 struct sctp_mcore_ctrl *wkq;
5555 if (sctp_mcore_workers == NULL) {
5556 /* Something went way bad during setup */
5557 sctp_input_with_port(m, off, 0);
5560 SCTP_MALLOC(qent, struct sctp_mcore_queue *,
5561 (sizeof(struct sctp_mcore_queue)),
5564 /* This is trouble */
5565 sctp_input_with_port(m, off, 0);
5572 wkq = &sctp_mcore_workers[cpu_to_use];
5573 SCTP_MCORE_QLOCK(wkq);
5575 TAILQ_INSERT_TAIL(&wkq->que, qent, next);
5576 if (wkq->running == 0) {
5579 SCTP_MCORE_QUNLOCK(wkq);
5581 wakeup(&wkq->running);
5586 sctp_mcore_thread(void *arg)
5589 struct sctp_mcore_ctrl *wkq;
5590 struct sctp_mcore_queue *qent;
5592 wkq = (struct sctp_mcore_ctrl *)arg;
5596 /* Wait for first tickle */
5597 SCTP_MCORE_LOCK(wkq);
5599 msleep(&wkq->running,
5601 0, "wait for pkt", 0);
5602 SCTP_MCORE_UNLOCK(wkq);
5604 /* Bind to our cpu */
5605 thread_lock(curthread);
5606 sched_bind(curthread, wkq->cpuid);
5607 thread_unlock(curthread);
5609 /* Now lets start working */
5610 SCTP_MCORE_LOCK(wkq);
5611 /* Now grab lock and go */
5613 SCTP_MCORE_QLOCK(wkq);
5616 qent = TAILQ_FIRST(&wkq->que);
5618 TAILQ_REMOVE(&wkq->que, qent, next);
5619 SCTP_MCORE_QUNLOCK(wkq);
5620 CURVNET_SET(qent->vn);
5624 SCTP_FREE(qent, SCTP_M_MCORE);
5626 sctp_input_with_port(m, off, 0);
5628 SCTP_PRINTF("V6 not yet supported\n");
5632 SCTP_MCORE_QLOCK(wkq);
5635 if (!TAILQ_EMPTY(&wkq->que)) {
5638 SCTP_MCORE_QUNLOCK(wkq);
5639 msleep(&wkq->running,
5641 0, "wait for pkt", 0);
5646 sctp_startup_mcore_threads(void)
5653 if (sctp_mcore_workers != NULL) {
5655 * Already been here in some previous vnet?
5659 SCTP_MALLOC(sctp_mcore_workers, struct sctp_mcore_ctrl *,
5660 ((mp_maxid + 1) * sizeof(struct sctp_mcore_ctrl)),
5662 if (sctp_mcore_workers == NULL) {
5666 memset(sctp_mcore_workers, 0, ((mp_maxid + 1) *
5667 sizeof(struct sctp_mcore_ctrl)));
5668 /* Init the structures */
5669 for (i = 0; i <= mp_maxid; i++) {
5670 TAILQ_INIT(&sctp_mcore_workers[i].que);
5671 SCTP_MCORE_LOCK_INIT(&sctp_mcore_workers[i]);
5672 SCTP_MCORE_QLOCK_INIT(&sctp_mcore_workers[i]);
5673 sctp_mcore_workers[i].cpuid = i;
5675 if (sctp_cpuarry == NULL) {
5676 SCTP_MALLOC(sctp_cpuarry, int *,
5677 (mp_ncpus * sizeof(int)),
5681 sctp_cpuarry[i] = cpu;
5685 /* Now start them all */
5687 (void)kproc_create(sctp_mcore_thread,
5688 (void *)&sctp_mcore_workers[cpu],
5689 &sctp_mcore_workers[cpu].thread_proc,
5703 * SCTP initialization for the PCB structures should be called by
5704 * the sctp_init() funciton.
5709 if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) {
5710 /* error I was called twice */
5713 SCTP_BASE_VAR(sctp_pcb_initialized) = 1;
5715 #if defined(SCTP_LOCAL_TRACE_BUF)
5716 bzero(&SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));
5718 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5719 SCTP_MALLOC(SCTP_BASE_STATS, struct sctpstat *,
5720 ((mp_maxid + 1) * sizeof(struct sctpstat)),
5723 (void)SCTP_GETTIME_TIMEVAL(&tv);
5724 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5725 bzero(SCTP_BASE_STATS, (sizeof(struct sctpstat) * (mp_maxid + 1)));
5726 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t) tv.tv_sec;
5727 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t) tv.tv_usec;
5729 bzero(&SCTP_BASE_STATS, sizeof(struct sctpstat));
5730 SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t) tv.tv_sec;
5731 SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t) tv.tv_usec;
5733 /* init the empty list of (All) Endpoints */
5734 LIST_INIT(&SCTP_BASE_INFO(listhead));
5737 /* init the hash table of endpoints */
5738 TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize));
5739 TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize));
5740 TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale));
5741 SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31),
5742 &SCTP_BASE_INFO(hashasocmark));
5743 SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5744 &SCTP_BASE_INFO(hashmark));
5745 SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5746 &SCTP_BASE_INFO(hashtcpmark));
5747 SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize);
5750 SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH,
5751 &SCTP_BASE_INFO(hashvrfmark));
5753 SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE,
5754 &SCTP_BASE_INFO(vrf_ifn_hashmark));
5755 /* init the zones */
5757 * FIX ME: Should check for NULL returns, but if it does fail we are
5758 * doomed to panic anyways... add later maybe.
5760 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep",
5761 sizeof(struct sctp_inpcb), maxsockets);
5763 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc",
5764 sizeof(struct sctp_tcb), sctp_max_number_of_assoc);
5766 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr",
5767 sizeof(struct sctp_laddr),
5768 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5770 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr",
5771 sizeof(struct sctp_nets),
5772 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5774 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk",
5775 sizeof(struct sctp_tmit_chunk),
5776 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5778 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq",
5779 sizeof(struct sctp_queued_to_read),
5780 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5782 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out",
5783 sizeof(struct sctp_stream_queue_pending),
5784 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5786 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf",
5787 sizeof(struct sctp_asconf),
5788 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5790 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack",
5791 sizeof(struct sctp_asconf_ack),
5792 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5795 /* Master Lock INIT for info structure */
5796 SCTP_INP_INFO_LOCK_INIT();
5797 SCTP_STATLOG_INIT_LOCK();
5799 SCTP_IPI_COUNT_INIT();
5800 SCTP_IPI_ADDR_INIT();
5801 #ifdef SCTP_PACKET_LOGGING
5802 SCTP_IP_PKTLOG_INIT();
5804 LIST_INIT(&SCTP_BASE_INFO(addr_wq));
5806 SCTP_WQ_ADDR_INIT();
5807 /* not sure if we need all the counts */
5808 SCTP_BASE_INFO(ipi_count_ep) = 0;
5809 /* assoc/tcb zone info */
5810 SCTP_BASE_INFO(ipi_count_asoc) = 0;
5811 /* local addrlist zone info */
5812 SCTP_BASE_INFO(ipi_count_laddr) = 0;
5813 /* remote addrlist zone info */
5814 SCTP_BASE_INFO(ipi_count_raddr) = 0;
5816 SCTP_BASE_INFO(ipi_count_chunk) = 0;
5818 /* socket queue zone info */
5819 SCTP_BASE_INFO(ipi_count_readq) = 0;
5821 /* stream out queue cont */
5822 SCTP_BASE_INFO(ipi_count_strmoq) = 0;
5824 SCTP_BASE_INFO(ipi_free_strmoq) = 0;
5825 SCTP_BASE_INFO(ipi_free_chunks) = 0;
5827 SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer));
5829 /* Init the TIMEWAIT list */
5830 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5831 LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]);
5833 sctp_startup_iterator();
5835 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5836 sctp_startup_mcore_threads();
5840 * INIT the default VRF which for BSD is the only one, other O/S's
5841 * may have more. But initially they must start with one and then
5842 * add the VRF's as addresses are added.
5844 sctp_init_vrf_list(SCTP_DEFAULT_VRF);
5848 * Assumes that the SCTP_BASE_INFO() lock is NOT held.
5851 sctp_pcb_finish(void)
5853 struct sctp_vrflist *vrf_bucket;
5854 struct sctp_vrf *vrf, *nvrf;
5855 struct sctp_ifn *ifn, *nifn;
5856 struct sctp_ifa *ifa, *nifa;
5857 struct sctpvtaghead *chain;
5858 struct sctp_tagblock *twait_block, *prev_twait_block;
5859 struct sctp_laddr *wi, *nwi;
5861 struct sctp_iterator *it, *nit;
5864 * In FreeBSD the iterator thread never exits but we do clean up.
5865 * The only way FreeBSD reaches here is if we have VRF's but we
5866 * still add the ifdef to make it compile on old versions.
5868 SCTP_IPI_ITERATOR_WQ_LOCK();
5869 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
5870 if (it->vn != curvnet) {
5873 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
5874 if (it->function_atend != NULL) {
5875 (*it->function_atend) (it->pointer, it->val);
5877 SCTP_FREE(it, SCTP_M_ITER);
5879 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5880 SCTP_ITERATOR_LOCK();
5881 if ((sctp_it_ctl.cur_it) &&
5882 (sctp_it_ctl.cur_it->vn == curvnet)) {
5883 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
5885 SCTP_ITERATOR_UNLOCK();
5886 SCTP_OS_TIMER_STOP(&SCTP_BASE_INFO(addr_wq_timer.timer));
5887 SCTP_WQ_ADDR_LOCK();
5888 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
5889 LIST_REMOVE(wi, sctp_nxt_addr);
5890 SCTP_DECR_LADDR_COUNT();
5891 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi);
5893 SCTP_WQ_ADDR_UNLOCK();
5896 * free the vrf/ifn/ifa lists and hashes (be sure address monitor is
5899 vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))];
5900 LIST_FOREACH_SAFE(vrf, vrf_bucket, next_vrf, nvrf) {
5901 LIST_FOREACH_SAFE(ifn, &vrf->ifnlist, next_ifn, nifn) {
5902 LIST_FOREACH_SAFE(ifa, &ifn->ifalist, next_ifa, nifa) {
5904 LIST_REMOVE(ifa, next_bucket);
5905 LIST_REMOVE(ifa, next_ifa);
5906 SCTP_FREE(ifa, SCTP_M_IFA);
5909 LIST_REMOVE(ifn, next_bucket);
5910 LIST_REMOVE(ifn, next_ifn);
5911 SCTP_FREE(ifn, SCTP_M_IFN);
5913 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
5915 LIST_REMOVE(vrf, next_vrf);
5916 SCTP_FREE(vrf, SCTP_M_VRF);
5918 /* free the vrf hashes */
5919 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark));
5920 SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark));
5923 * free the TIMEWAIT list elements malloc'd in the function
5924 * sctp_add_vtag_to_timewait()...
5926 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5927 chain = &SCTP_BASE_INFO(vtag_timewait)[i];
5928 if (!LIST_EMPTY(chain)) {
5929 prev_twait_block = NULL;
5930 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
5931 if (prev_twait_block) {
5932 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
5934 prev_twait_block = twait_block;
5936 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
5940 /* free the locks and mutexes */
5941 #ifdef SCTP_PACKET_LOGGING
5942 SCTP_IP_PKTLOG_DESTROY();
5944 SCTP_IPI_ADDR_DESTROY();
5945 SCTP_STATLOG_DESTROY();
5946 SCTP_INP_INFO_LOCK_DESTROY();
5948 SCTP_WQ_ADDR_DESTROY();
5950 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep));
5951 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc));
5952 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr));
5953 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net));
5954 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk));
5955 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq));
5956 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq));
5957 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf));
5958 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack));
5959 /* Get rid of other stuff to */
5960 if (SCTP_BASE_INFO(sctp_asochash) != NULL)
5961 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark));
5962 if (SCTP_BASE_INFO(sctp_ephash) != NULL)
5963 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark));
5964 if (SCTP_BASE_INFO(sctp_tcpephash) != NULL)
5965 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark));
5966 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5967 SCTP_FREE(SCTP_BASE_STATS, SCTP_M_MCORE);
5973 sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m,
5974 int offset, int limit,
5975 struct sockaddr *src, struct sockaddr *dst,
5976 struct sockaddr *altsa)
5979 * grub through the INIT pulling addresses and loading them to the
5980 * nets structure in the asoc. The from address in the mbuf should
5981 * also be loaded (if it is not already). This routine can be called
5982 * with either INIT or INIT-ACK's as long as the m points to the IP
5983 * packet and the offset points to the beginning of the parameters.
5985 struct sctp_inpcb *inp;
5986 struct sctp_nets *net, *nnet, *net_tmp;
5987 struct sctp_paramhdr *phdr, parm_buf;
5988 struct sctp_tcb *stcb_tmp;
5989 uint16_t ptype, plen;
5990 struct sockaddr *sa;
5991 uint8_t random_store[SCTP_PARAM_BUFFER_SIZE];
5992 struct sctp_auth_random *p_random = NULL;
5993 uint16_t random_len = 0;
5994 uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE];
5995 struct sctp_auth_hmac_algo *hmacs = NULL;
5996 uint16_t hmacs_len = 0;
5997 uint8_t saw_asconf = 0;
5998 uint8_t saw_asconf_ack = 0;
5999 uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE];
6000 struct sctp_auth_chunk_list *chunks = NULL;
6001 uint16_t num_chunks = 0;
6002 sctp_key_t *new_key;
6004 int got_random = 0, got_hmacs = 0, got_chklist = 0;
6005 uint8_t ecn_allowed;
6008 struct sockaddr_in sin;
6012 struct sockaddr_in6 sin6;
6016 /* First get the destination address setup too. */
6018 memset(&sin, 0, sizeof(sin));
6019 sin.sin_family = AF_INET;
6020 sin.sin_len = sizeof(sin);
6021 sin.sin_port = stcb->rport;
6024 memset(&sin6, 0, sizeof(sin6));
6025 sin6.sin6_family = AF_INET6;
6026 sin6.sin6_len = sizeof(struct sockaddr_in6);
6027 sin6.sin6_port = stcb->rport;
6034 /* Turn off ECN until we get through all params */
6036 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
6037 /* mark all addresses that we have currently on the list */
6038 net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC;
6040 /* does the source address already exist? if so skip it */
6041 inp = stcb->sctp_ep;
6042 atomic_add_int(&stcb->asoc.refcnt, 1);
6043 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, dst, stcb);
6044 atomic_add_int(&stcb->asoc.refcnt, -1);
6046 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) {
6047 /* we must add the source address */
6048 /* no scope set here since we have a tcb already. */
6049 switch (sa->sa_family) {
6052 if (stcb->asoc.scope.ipv4_addr_legal) {
6053 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) {
6061 if (stcb->asoc.scope.ipv6_addr_legal) {
6062 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
6072 if (net_tmp != NULL && stcb_tmp == stcb) {
6073 net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC;
6074 } else if (stcb_tmp != stcb) {
6075 /* It belongs to another association? */
6077 SCTP_TCB_UNLOCK(stcb_tmp);
6081 if (stcb->asoc.state == 0) {
6082 /* the assoc was freed? */
6086 * peer must explicitly turn this on. This may have been initialized
6087 * to be "on" in order to allow local addr changes while INIT's are
6090 stcb->asoc.peer_supports_asconf = 0;
6091 /* now we must go through each of the params. */
6092 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
6094 ptype = ntohs(phdr->param_type);
6095 plen = ntohs(phdr->param_length);
6097 * SCTP_PRINTF("ptype => %0x, plen => %d\n",
6098 * (uint32_t)ptype, (int)plen);
6100 if (offset + plen > limit) {
6107 if (ptype == SCTP_IPV4_ADDRESS) {
6108 if (stcb->asoc.scope.ipv4_addr_legal) {
6109 struct sctp_ipv4addr_param *p4, p4_buf;
6111 /* ok get the v4 address and check/add */
6112 phdr = sctp_get_next_param(m, offset,
6113 (struct sctp_paramhdr *)&p4_buf,
6115 if (plen != sizeof(struct sctp_ipv4addr_param) ||
6119 p4 = (struct sctp_ipv4addr_param *)phdr;
6120 sin.sin_addr.s_addr = p4->addr;
6121 if (IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) {
6122 /* Skip multi-cast addresses */
6125 if ((sin.sin_addr.s_addr == INADDR_BROADCAST) ||
6126 (sin.sin_addr.s_addr == INADDR_ANY)) {
6129 sa = (struct sockaddr *)&sin;
6130 inp = stcb->sctp_ep;
6131 atomic_add_int(&stcb->asoc.refcnt, 1);
6132 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6134 atomic_add_int(&stcb->asoc.refcnt, -1);
6136 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) ||
6138 /* we must add the source address */
6140 * no scope set since we have a tcb
6145 * we must validate the state again
6149 if (stcb->asoc.state == 0) {
6150 /* the assoc was freed? */
6153 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) {
6156 } else if (stcb_tmp == stcb) {
6157 if (stcb->asoc.state == 0) {
6158 /* the assoc was freed? */
6164 ~SCTP_ADDR_NOT_IN_ASSOC;
6168 * strange, address is in another
6169 * assoc? straighten out locks.
6172 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6177 sctp_abort_an_association(stcb_tmp->sctp_ep,
6178 stcb_tmp, NULL, SCTP_SO_NOT_LOCKED);
6181 SCTP_TCB_UNLOCK(stcb_tmp);
6183 if (stcb->asoc.state == 0) {
6184 /* the assoc was freed? */
6193 if (ptype == SCTP_IPV6_ADDRESS) {
6194 if (stcb->asoc.scope.ipv6_addr_legal) {
6195 /* ok get the v6 address and check/add */
6196 struct sctp_ipv6addr_param *p6, p6_buf;
6198 phdr = sctp_get_next_param(m, offset,
6199 (struct sctp_paramhdr *)&p6_buf,
6201 if (plen != sizeof(struct sctp_ipv6addr_param) ||
6205 p6 = (struct sctp_ipv6addr_param *)phdr;
6206 memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
6208 if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) {
6209 /* Skip multi-cast addresses */
6212 if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) {
6214 * Link local make no sense without
6219 sa = (struct sockaddr *)&sin6;
6220 inp = stcb->sctp_ep;
6221 atomic_add_int(&stcb->asoc.refcnt, 1);
6222 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6224 atomic_add_int(&stcb->asoc.refcnt, -1);
6225 if (stcb_tmp == NULL &&
6226 (inp == stcb->sctp_ep || inp == NULL)) {
6228 * we must validate the state again
6232 if (stcb->asoc.state == 0) {
6233 /* the assoc was freed? */
6237 * we must add the address, no scope
6240 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) {
6243 } else if (stcb_tmp == stcb) {
6245 * we must validate the state again
6248 if (stcb->asoc.state == 0) {
6249 /* the assoc was freed? */
6255 ~SCTP_ADDR_NOT_IN_ASSOC;
6259 * strange, address is in another
6260 * assoc? straighten out locks.
6263 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6268 sctp_abort_an_association(stcb_tmp->sctp_ep,
6269 stcb_tmp, NULL, SCTP_SO_NOT_LOCKED);
6272 SCTP_TCB_UNLOCK(stcb_tmp);
6274 if (stcb->asoc.state == 0) {
6275 /* the assoc was freed? */
6283 if (ptype == SCTP_ECN_CAPABLE) {
6285 } else if (ptype == SCTP_ULP_ADAPTATION) {
6286 if (stcb->asoc.state != SCTP_STATE_OPEN) {
6287 struct sctp_adaptation_layer_indication ai,
6290 phdr = sctp_get_next_param(m, offset,
6291 (struct sctp_paramhdr *)&ai, sizeof(ai));
6292 aip = (struct sctp_adaptation_layer_indication *)phdr;
6294 stcb->asoc.peers_adaptation = ntohl(aip->indication);
6295 stcb->asoc.adaptation_needed = 1;
6298 } else if (ptype == SCTP_SET_PRIM_ADDR) {
6299 struct sctp_asconf_addr_param lstore, *fee;
6301 struct sockaddr *lsa = NULL;
6304 struct sctp_asconf_addrv4_param *fii;
6308 stcb->asoc.peer_supports_asconf = 1;
6309 if (plen > sizeof(lstore)) {
6312 phdr = sctp_get_next_param(m, offset,
6313 (struct sctp_paramhdr *)&lstore,
6314 min(plen, sizeof(lstore)));
6318 fee = (struct sctp_asconf_addr_param *)phdr;
6319 lptype = ntohs(fee->addrp.ph.param_type);
6322 case SCTP_IPV4_ADDRESS:
6324 sizeof(struct sctp_asconf_addrv4_param)) {
6325 SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n",
6326 (int)sizeof(struct sctp_asconf_addrv4_param),
6329 fii = (struct sctp_asconf_addrv4_param *)fee;
6330 sin.sin_addr.s_addr = fii->addrp.addr;
6331 lsa = (struct sockaddr *)&sin;
6336 case SCTP_IPV6_ADDRESS:
6338 sizeof(struct sctp_asconf_addr_param)) {
6339 SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n",
6340 (int)sizeof(struct sctp_asconf_addr_param),
6343 memcpy(sin6.sin6_addr.s6_addr,
6345 sizeof(fee->addrp.addr));
6346 lsa = (struct sockaddr *)&sin6;
6354 (void)sctp_set_primary_addr(stcb, sa, NULL);
6356 } else if (ptype == SCTP_HAS_NAT_SUPPORT) {
6357 stcb->asoc.peer_supports_nat = 1;
6358 } else if (ptype == SCTP_PRSCTP_SUPPORTED) {
6359 /* Peer supports pr-sctp */
6360 stcb->asoc.peer_supports_prsctp = 1;
6361 } else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) {
6362 /* A supported extension chunk */
6363 struct sctp_supported_chunk_types_param *pr_supported;
6364 uint8_t local_store[SCTP_PARAM_BUFFER_SIZE];
6367 phdr = sctp_get_next_param(m, offset,
6368 (struct sctp_paramhdr *)&local_store, min(sizeof(local_store), plen));
6372 stcb->asoc.peer_supports_asconf = 0;
6373 stcb->asoc.peer_supports_prsctp = 0;
6374 stcb->asoc.peer_supports_pktdrop = 0;
6375 stcb->asoc.peer_supports_strreset = 0;
6376 stcb->asoc.peer_supports_nr_sack = 0;
6377 stcb->asoc.peer_supports_auth = 0;
6378 pr_supported = (struct sctp_supported_chunk_types_param *)phdr;
6379 num_ent = plen - sizeof(struct sctp_paramhdr);
6380 for (i = 0; i < num_ent; i++) {
6381 switch (pr_supported->chunk_types[i]) {
6383 case SCTP_ASCONF_ACK:
6384 stcb->asoc.peer_supports_asconf = 1;
6386 case SCTP_FORWARD_CUM_TSN:
6387 stcb->asoc.peer_supports_prsctp = 1;
6389 case SCTP_PACKET_DROPPED:
6390 stcb->asoc.peer_supports_pktdrop = 1;
6392 case SCTP_NR_SELECTIVE_ACK:
6393 stcb->asoc.peer_supports_nr_sack = 1;
6395 case SCTP_STREAM_RESET:
6396 stcb->asoc.peer_supports_strreset = 1;
6398 case SCTP_AUTHENTICATION:
6399 stcb->asoc.peer_supports_auth = 1;
6402 /* one I have not learned yet */
6407 } else if (ptype == SCTP_RANDOM) {
6408 if (plen > sizeof(random_store))
6411 /* already processed a RANDOM */
6414 phdr = sctp_get_next_param(m, offset,
6415 (struct sctp_paramhdr *)random_store,
6416 min(sizeof(random_store), plen));
6419 p_random = (struct sctp_auth_random *)phdr;
6420 random_len = plen - sizeof(*p_random);
6421 /* enforce the random length */
6422 if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) {
6423 SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n");
6427 } else if (ptype == SCTP_HMAC_LIST) {
6431 if (plen > sizeof(hmacs_store))
6434 /* already processed a HMAC list */
6437 phdr = sctp_get_next_param(m, offset,
6438 (struct sctp_paramhdr *)hmacs_store,
6439 min(plen, sizeof(hmacs_store)));
6442 hmacs = (struct sctp_auth_hmac_algo *)phdr;
6443 hmacs_len = plen - sizeof(*hmacs);
6444 num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]);
6445 /* validate the hmac list */
6446 if (sctp_verify_hmac_param(hmacs, num_hmacs)) {
6449 if (stcb->asoc.peer_hmacs != NULL)
6450 sctp_free_hmaclist(stcb->asoc.peer_hmacs);
6451 stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs);
6452 if (stcb->asoc.peer_hmacs != NULL) {
6453 for (i = 0; i < num_hmacs; i++) {
6454 (void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs,
6455 ntohs(hmacs->hmac_ids[i]));
6459 } else if (ptype == SCTP_CHUNK_LIST) {
6462 if (plen > sizeof(chunks_store))
6465 /* already processed a Chunks list */
6468 phdr = sctp_get_next_param(m, offset,
6469 (struct sctp_paramhdr *)chunks_store,
6470 min(plen, sizeof(chunks_store)));
6473 chunks = (struct sctp_auth_chunk_list *)phdr;
6474 num_chunks = plen - sizeof(*chunks);
6475 if (stcb->asoc.peer_auth_chunks != NULL)
6476 sctp_clear_chunklist(stcb->asoc.peer_auth_chunks);
6478 stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist();
6479 for (i = 0; i < num_chunks; i++) {
6480 (void)sctp_auth_add_chunk(chunks->chunk_types[i],
6481 stcb->asoc.peer_auth_chunks);
6482 /* record asconf/asconf-ack if listed */
6483 if (chunks->chunk_types[i] == SCTP_ASCONF)
6485 if (chunks->chunk_types[i] == SCTP_ASCONF_ACK)
6490 } else if ((ptype == SCTP_HEARTBEAT_INFO) ||
6491 (ptype == SCTP_STATE_COOKIE) ||
6492 (ptype == SCTP_UNRECOG_PARAM) ||
6493 (ptype == SCTP_COOKIE_PRESERVE) ||
6494 (ptype == SCTP_SUPPORTED_ADDRTYPE) ||
6495 (ptype == SCTP_ADD_IP_ADDRESS) ||
6496 (ptype == SCTP_DEL_IP_ADDRESS) ||
6497 (ptype == SCTP_ERROR_CAUSE_IND) ||
6498 (ptype == SCTP_SUCCESS_REPORT)) {
6501 if ((ptype & 0x8000) == 0x0000) {
6503 * must stop processing the rest of the
6504 * param's. Any report bits were handled
6506 * sctp_arethere_unrecognized_parameters()
6507 * when the INIT or INIT-ACK was first seen.
6514 offset += SCTP_SIZE32(plen);
6515 if (offset >= limit) {
6518 phdr = sctp_get_next_param(m, offset, &parm_buf,
6521 /* Now check to see if we need to purge any addresses */
6522 TAILQ_FOREACH_SAFE(net, &stcb->asoc.nets, sctp_next, nnet) {
6523 if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) ==
6524 SCTP_ADDR_NOT_IN_ASSOC) {
6525 /* This address has been removed from the asoc */
6526 /* remove and free it */
6527 stcb->asoc.numnets--;
6528 TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next);
6529 sctp_free_remote_addr(net);
6530 if (net == stcb->asoc.primary_destination) {
6531 stcb->asoc.primary_destination = NULL;
6532 sctp_select_primary_destination(stcb);
6536 if (ecn_allowed == 0) {
6537 stcb->asoc.ecn_allowed = 0;
6539 /* validate authentication required parameters */
6540 if (got_random && got_hmacs) {
6541 stcb->asoc.peer_supports_auth = 1;
6543 stcb->asoc.peer_supports_auth = 0;
6545 if (!stcb->asoc.peer_supports_auth && got_chklist) {
6546 /* peer does not support auth but sent a chunks list? */
6549 if (!SCTP_BASE_SYSCTL(sctp_asconf_auth_nochk) && stcb->asoc.peer_supports_asconf &&
6550 !stcb->asoc.peer_supports_auth) {
6551 /* peer supports asconf but not auth? */
6553 } else if ((stcb->asoc.peer_supports_asconf) && (stcb->asoc.peer_supports_auth) &&
6554 ((saw_asconf == 0) || (saw_asconf_ack == 0))) {
6557 /* concatenate the full random key */
6558 keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len;
6559 if (chunks != NULL) {
6560 keylen += sizeof(*chunks) + num_chunks;
6562 new_key = sctp_alloc_key(keylen);
6563 if (new_key != NULL) {
6564 /* copy in the RANDOM */
6565 if (p_random != NULL) {
6566 keylen = sizeof(*p_random) + random_len;
6567 bcopy(p_random, new_key->key, keylen);
6569 /* append in the AUTH chunks */
6570 if (chunks != NULL) {
6571 bcopy(chunks, new_key->key + keylen,
6572 sizeof(*chunks) + num_chunks);
6573 keylen += sizeof(*chunks) + num_chunks;
6575 /* append in the HMACs */
6576 if (hmacs != NULL) {
6577 bcopy(hmacs, new_key->key + keylen,
6578 sizeof(*hmacs) + hmacs_len);
6581 /* failed to get memory for the key */
6584 if (stcb->asoc.authinfo.peer_random != NULL)
6585 sctp_free_key(stcb->asoc.authinfo.peer_random);
6586 stcb->asoc.authinfo.peer_random = new_key;
6587 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid);
6588 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid);
6594 sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa,
6595 struct sctp_nets *net)
6597 /* make sure the requested primary address exists in the assoc */
6598 if (net == NULL && sa)
6599 net = sctp_findnet(stcb, sa);
6602 /* didn't find the requested primary address! */
6605 /* set the primary address */
6606 if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
6607 /* Must be confirmed, so queue to set */
6608 net->dest_state |= SCTP_ADDR_REQ_PRIMARY;
6611 stcb->asoc.primary_destination = net;
6612 if (!(net->dest_state & SCTP_ADDR_PF) && (stcb->asoc.alternate)) {
6613 sctp_free_remote_addr(stcb->asoc.alternate);
6614 stcb->asoc.alternate = NULL;
6616 net = TAILQ_FIRST(&stcb->asoc.nets);
6617 if (net != stcb->asoc.primary_destination) {
6619 * first one on the list is NOT the primary
6620 * sctp_cmpaddr() is much more efficient if the
6621 * primary is the first on the list, make it so.
6623 TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6624 TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6631 sctp_is_vtag_good(uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now)
6634 * This function serves two purposes. It will see if a TAG can be
6635 * re-used and return 1 for yes it is ok and 0 for don't use that
6636 * tag. A secondary function it will do is purge out old tags that
6639 struct sctpvtaghead *chain;
6640 struct sctp_tagblock *twait_block;
6641 struct sctpasochead *head;
6642 struct sctp_tcb *stcb;
6645 SCTP_INP_INFO_RLOCK();
6646 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag,
6647 SCTP_BASE_INFO(hashasocmark))];
6650 goto skip_vtag_check;
6652 LIST_FOREACH(stcb, head, sctp_asocs) {
6654 * We choose not to lock anything here. TCB's can't be
6655 * removed since we have the read lock, so they can't be
6656 * freed on us, same thing for the INP. I may be wrong with
6657 * this assumption, but we will go with it for now :-)
6659 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
6662 if (stcb->asoc.my_vtag == tag) {
6664 if (stcb->rport != rport) {
6667 if (stcb->sctp_ep->sctp_lport != lport) {
6670 /* Its a used tag set */
6671 SCTP_INP_INFO_RUNLOCK();
6677 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
6678 /* Now what about timed wait ? */
6679 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6681 * Block(s) are present, lets see if we have this tag in the
6684 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
6685 if (twait_block->vtag_block[i].v_tag == 0) {
6688 } else if ((long)twait_block->vtag_block[i].tv_sec_at_expire <
6690 /* Audit expires this guy */
6691 twait_block->vtag_block[i].tv_sec_at_expire = 0;
6692 twait_block->vtag_block[i].v_tag = 0;
6693 twait_block->vtag_block[i].lport = 0;
6694 twait_block->vtag_block[i].rport = 0;
6695 } else if ((twait_block->vtag_block[i].v_tag == tag) &&
6696 (twait_block->vtag_block[i].lport == lport) &&
6697 (twait_block->vtag_block[i].rport == rport)) {
6698 /* Bad tag, sorry :< */
6699 SCTP_INP_INFO_RUNLOCK();
6704 SCTP_INP_INFO_RUNLOCK();
6709 sctp_drain_mbufs(struct sctp_tcb *stcb)
6712 * We must hunt this association for MBUF's past the cumack (i.e.
6713 * out of order data that we can renege on).
6715 struct sctp_association *asoc;
6716 struct sctp_tmit_chunk *chk, *nchk;
6717 uint32_t cumulative_tsn_p1;
6718 struct sctp_queued_to_read *ctl, *nctl;
6723 /* We look for anything larger than the cum-ack + 1 */
6726 if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) {
6727 /* none we can reneg on. */
6730 SCTP_STAT_INCR(sctps_protocol_drains_done);
6731 cumulative_tsn_p1 = asoc->cumulative_tsn + 1;
6733 /* First look in the re-assembly queue */
6734 TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) {
6735 if (SCTP_TSN_GT(chk->rec.data.TSN_seq, cumulative_tsn_p1)) {
6736 /* Yep it is above cum-ack */
6738 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.TSN_seq, asoc->mapping_array_base_tsn);
6739 asoc->size_on_reasm_queue = sctp_sbspace_sub(asoc->size_on_reasm_queue, chk->send_size);
6740 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6741 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6742 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
6744 sctp_m_freem(chk->data);
6747 sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
6750 /* Ok that was fun, now we will drain all the inbound streams? */
6751 for (strmat = 0; strmat < asoc->streamincnt; strmat++) {
6752 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[strmat].inqueue, next, nctl) {
6753 if (SCTP_TSN_GT(ctl->sinfo_tsn, cumulative_tsn_p1)) {
6754 /* Yep it is above cum-ack */
6756 SCTP_CALC_TSN_TO_GAP(gap, ctl->sinfo_tsn, asoc->mapping_array_base_tsn);
6757 asoc->size_on_all_streams = sctp_sbspace_sub(asoc->size_on_all_streams, ctl->length);
6758 sctp_ucount_decr(asoc->cnt_on_all_streams);
6759 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6760 TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, ctl, next);
6762 sctp_m_freem(ctl->data);
6765 sctp_free_remote_addr(ctl->whoFrom);
6766 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
6767 SCTP_DECR_READQ_COUNT();
6772 /* We must back down to see what the new highest is */
6773 for (i = asoc->highest_tsn_inside_map; SCTP_TSN_GE(i, asoc->mapping_array_base_tsn); i--) {
6774 SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn);
6775 if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) {
6776 asoc->highest_tsn_inside_map = i;
6782 asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1;
6785 * Question, should we go through the delivery queue? The
6786 * only reason things are on here is the app not reading OR
6787 * a p-d-api up. An attacker COULD send enough in to
6788 * initiate the PD-API and then send a bunch of stuff to
6789 * other streams... these would wind up on the delivery
6790 * queue.. and then we would not get to them. But in order
6791 * to do this I then have to back-track and un-deliver
6792 * sequence numbers in streams.. el-yucko. I think for now
6793 * we will NOT look at the delivery queue and leave it to be
6794 * something to consider later. An alternative would be to
6795 * abort the P-D-API with a notification and then deliver
6796 * the data.... Or another method might be to keep track of
6797 * how many times the situation occurs and if we see a
6798 * possible attack underway just abort the association.
6801 SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt);
6804 * Now do we need to find a new
6805 * asoc->highest_tsn_inside_map?
6807 asoc->last_revoke_count = cnt;
6808 (void)SCTP_OS_TIMER_STOP(&stcb->asoc.dack_timer.timer);
6809 /* sa_ignore NO_NULL_CHK */
6810 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
6811 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED);
6814 * Another issue, in un-setting the TSN's in the mapping array we
6815 * DID NOT adjust the highest_tsn marker. This will cause one of
6816 * two things to occur. It may cause us to do extra work in checking
6817 * for our mapping array movement. More importantly it may cause us
6818 * to SACK every datagram. This may not be a bad thing though since
6819 * we will recover once we get our cum-ack above and all this stuff
6820 * we dumped recovered.
6828 * We must walk the PCB lists for ALL associations here. The system
6829 * is LOW on MBUF's and needs help. This is where reneging will
6830 * occur. We really hope this does NOT happen!
6832 VNET_ITERATOR_DECL(vnet_iter);
6833 VNET_LIST_RLOCK_NOSLEEP();
6834 VNET_FOREACH(vnet_iter) {
6835 CURVNET_SET(vnet_iter);
6836 struct sctp_inpcb *inp;
6837 struct sctp_tcb *stcb;
6839 SCTP_STAT_INCR(sctps_protocol_drain_calls);
6840 if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
6847 SCTP_INP_INFO_RLOCK();
6848 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
6849 /* For each endpoint */
6850 SCTP_INP_RLOCK(inp);
6851 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
6852 /* For each association */
6853 SCTP_TCB_LOCK(stcb);
6854 sctp_drain_mbufs(stcb);
6855 SCTP_TCB_UNLOCK(stcb);
6857 SCTP_INP_RUNLOCK(inp);
6859 SCTP_INP_INFO_RUNLOCK();
6862 VNET_LIST_RUNLOCK_NOSLEEP();
6866 * start a new iterator
6867 * iterates through all endpoints and associations based on the pcb_state
6868 * flags and asoc_state. "af" (mandatory) is executed for all matching
6869 * assocs and "ef" (optional) is executed when the iterator completes.
6870 * "inpf" (optional) is executed for each new endpoint as it is being
6871 * iterated through. inpe (optional) is called when the inp completes
6872 * its way through all the stcbs.
6875 sctp_initiate_iterator(inp_func inpf,
6879 uint32_t pcb_features,
6880 uint32_t asoc_state,
6884 struct sctp_inpcb *s_inp,
6885 uint8_t chunk_output_off)
6887 struct sctp_iterator *it = NULL;
6892 SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator),
6895 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
6898 memset(it, 0, sizeof(*it));
6899 it->function_assoc = af;
6900 it->function_inp = inpf;
6902 it->done_current_ep = 0;
6904 it->done_current_ep = 1;
6905 it->function_atend = ef;
6908 it->pcb_flags = pcb_state;
6909 it->pcb_features = pcb_features;
6910 it->asoc_state = asoc_state;
6911 it->function_inp_end = inpe;
6912 it->no_chunk_output = chunk_output_off;
6915 /* Assume lock is held here */
6917 SCTP_INP_INCR_REF(it->inp);
6918 it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP;
6920 SCTP_INP_INFO_RLOCK();
6921 it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead));
6923 SCTP_INP_INCR_REF(it->inp);
6925 SCTP_INP_INFO_RUNLOCK();
6926 it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP;
6929 SCTP_IPI_ITERATOR_WQ_LOCK();
6931 TAILQ_INSERT_TAIL(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
6932 if (sctp_it_ctl.iterator_running == 0) {
6933 sctp_wakeup_iterator();
6935 SCTP_IPI_ITERATOR_WQ_UNLOCK();
6936 /* sa_ignore MEMLEAK {memory is put on the tailq for the iterator} */