2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2008-2011, by Randall Stewart. All rights reserved.
4 * Copyright (c) 2008-2011, 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 /* $KAME: sctp_pcb.c,v 1.38 2005/03/06 16:04:18 itojun Exp $ */
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #include <netinet/sctp_os.h>
40 #include <netinet/sctp_var.h>
41 #include <netinet/sctp_sysctl.h>
42 #include <netinet/sctp_pcb.h>
43 #include <netinet/sctputil.h>
44 #include <netinet/sctp.h>
45 #include <netinet/sctp_header.h>
46 #include <netinet/sctp_asconf.h>
47 #include <netinet/sctp_output.h>
48 #include <netinet/sctp_timer.h>
49 #include <netinet/sctp_bsd_addr.h>
50 #include <netinet/sctp_dtrace_define.h>
51 #include <netinet/udp.h>
53 #include <netinet6/ip6_var.h>
55 #include <sys/sched.h>
57 #include <sys/unistd.h>
60 VNET_DEFINE(struct sctp_base_info, system_base_info);
62 /* FIX: we don't handle multiple link local scopes */
63 /* "scopeless" replacement IN6_ARE_ADDR_EQUAL */
66 SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b)
68 struct sockaddr_in6 tmp_a, tmp_b;
70 memcpy(&tmp_a, a, sizeof(struct sockaddr_in6));
71 if (sa6_embedscope(&tmp_a, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
74 memcpy(&tmp_b, b, sizeof(struct sockaddr_in6));
75 if (sa6_embedscope(&tmp_b, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
78 return (IN6_ARE_ADDR_EQUAL(&tmp_a.sin6_addr, &tmp_b.sin6_addr));
84 sctp_fill_pcbinfo(struct sctp_pcbinfo *spcb)
87 * We really don't need to lock this, but I will just because it
90 SCTP_INP_INFO_RLOCK();
91 spcb->ep_count = SCTP_BASE_INFO(ipi_count_ep);
92 spcb->asoc_count = SCTP_BASE_INFO(ipi_count_asoc);
93 spcb->laddr_count = SCTP_BASE_INFO(ipi_count_laddr);
94 spcb->raddr_count = SCTP_BASE_INFO(ipi_count_raddr);
95 spcb->chk_count = SCTP_BASE_INFO(ipi_count_chunk);
96 spcb->readq_count = SCTP_BASE_INFO(ipi_count_readq);
97 spcb->stream_oque = SCTP_BASE_INFO(ipi_count_strmoq);
98 spcb->free_chunks = SCTP_BASE_INFO(ipi_free_chunks);
100 SCTP_INP_INFO_RUNLOCK();
104 * Addresses are added to VRF's (Virtual Router's). For BSD we
105 * have only the default VRF 0. We maintain a hash list of
106 * VRF's. Each VRF has its own list of sctp_ifn's. Each of
107 * these has a list of addresses. When we add a new address
108 * to a VRF we lookup the ifn/ifn_index, if the ifn does
109 * not exist we create it and add it to the list of IFN's
110 * within the VRF. Once we have the sctp_ifn, we add the
111 * address to the list. So we look something like:
114 * vrf-> ifn-> ifn -> ifn
116 * ... +--ifa-> ifa -> ifa
119 * We keep these separate lists since the SCTP subsystem will
120 * point to these from its source address selection nets structure.
121 * When an address is deleted it does not happen right away on
122 * the SCTP side, it gets scheduled. What we do when a
123 * delete happens is immediately remove the address from
124 * the master list and decrement the refcount. As our
125 * addip iterator works through and frees the src address
126 * selection pointing to the sctp_ifa, eventually the refcount
127 * will reach 0 and we will delete it. Note that it is assumed
128 * that any locking on system level ifn/ifa is done at the
129 * caller of these functions and these routines will only
130 * lock the SCTP structures as they add or delete things.
132 * Other notes on VRF concepts.
133 * - An endpoint can be in multiple VRF's
134 * - An association lives within a VRF and only one VRF.
135 * - Any incoming packet we can deduce the VRF for by
136 * looking at the mbuf/pak inbound (for BSD its VRF=0 :D)
137 * - Any downward send call or connect call must supply the
138 * VRF via ancillary data or via some sort of set default
139 * VRF socket option call (again for BSD no brainer since
140 * the VRF is always 0).
141 * - An endpoint may add multiple VRF's to it.
142 * - Listening sockets can accept associations in any
143 * of the VRF's they are in but the assoc will end up
144 * in only one VRF (gotten from the packet or connect/send).
149 sctp_allocate_vrf(int vrf_id)
151 struct sctp_vrf *vrf = NULL;
152 struct sctp_vrflist *bucket;
154 /* First allocate the VRF structure */
155 vrf = sctp_find_vrf(vrf_id);
157 /* Already allocated */
160 SCTP_MALLOC(vrf, struct sctp_vrf *, sizeof(struct sctp_vrf),
165 panic("No memory for VRF:%d", vrf_id);
170 memset(vrf, 0, sizeof(struct sctp_vrf));
171 vrf->vrf_id = vrf_id;
172 LIST_INIT(&vrf->ifnlist);
173 vrf->total_ifa_count = 0;
175 /* now also setup table ids */
176 SCTP_INIT_VRF_TABLEID(vrf);
177 /* Init the HASH of addresses */
178 vrf->vrf_addr_hash = SCTP_HASH_INIT(SCTP_VRF_ADDR_HASH_SIZE,
179 &vrf->vrf_addr_hashmark);
180 if (vrf->vrf_addr_hash == NULL) {
183 panic("No memory for VRF:%d", vrf_id);
185 SCTP_FREE(vrf, SCTP_M_VRF);
188 /* Add it to the hash table */
189 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
190 LIST_INSERT_HEAD(bucket, vrf, next_vrf);
191 atomic_add_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
197 sctp_find_ifn(void *ifn, uint32_t ifn_index)
199 struct sctp_ifn *sctp_ifnp;
200 struct sctp_ifnlist *hash_ifn_head;
203 * We assume the lock is held for the addresses if that's wrong
204 * problems could occur :-)
206 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
207 LIST_FOREACH(sctp_ifnp, hash_ifn_head, next_bucket) {
208 if (sctp_ifnp->ifn_index == ifn_index) {
211 if (sctp_ifnp->ifn_p && ifn && (sctp_ifnp->ifn_p == ifn)) {
221 sctp_find_vrf(uint32_t vrf_id)
223 struct sctp_vrflist *bucket;
224 struct sctp_vrf *liste;
226 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
227 LIST_FOREACH(liste, bucket, next_vrf) {
228 if (vrf_id == liste->vrf_id) {
236 sctp_free_vrf(struct sctp_vrf *vrf)
238 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&vrf->refcount)) {
239 if (vrf->vrf_addr_hash) {
240 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
241 vrf->vrf_addr_hash = NULL;
243 /* We zero'd the count */
244 LIST_REMOVE(vrf, next_vrf);
245 SCTP_FREE(vrf, SCTP_M_VRF);
246 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
251 sctp_free_ifn(struct sctp_ifn *sctp_ifnp)
253 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifnp->refcount)) {
254 /* We zero'd the count */
255 if (sctp_ifnp->vrf) {
256 sctp_free_vrf(sctp_ifnp->vrf);
258 SCTP_FREE(sctp_ifnp, SCTP_M_IFN);
259 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
264 sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu)
266 struct sctp_ifn *sctp_ifnp;
268 sctp_ifnp = sctp_find_ifn((void *)NULL, ifn_index);
269 if (sctp_ifnp != NULL) {
270 sctp_ifnp->ifn_mtu = mtu;
276 sctp_free_ifa(struct sctp_ifa *sctp_ifap)
278 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifap->refcount)) {
279 /* We zero'd the count */
280 if (sctp_ifap->ifn_p) {
281 sctp_free_ifn(sctp_ifap->ifn_p);
283 SCTP_FREE(sctp_ifap, SCTP_M_IFA);
284 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);
311 sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr,
312 const char *if_name, uint32_t ifn_index)
314 struct sctp_vrf *vrf;
315 struct sctp_ifa *sctp_ifap = NULL;
317 SCTP_IPI_ADDR_RLOCK();
318 vrf = sctp_find_vrf(vrf_id);
320 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
324 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
325 if (sctp_ifap == NULL) {
326 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
329 if (sctp_ifap->ifn_p == NULL) {
330 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unuseable\n");
336 len1 = strlen(if_name);
337 len2 = strlen(sctp_ifap->ifn_p->ifn_name);
339 SCTPDBG(SCTP_DEBUG_PCB4, "IFN of ifa names different length %d vs %d - ignored\n",
343 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, len1) != 0) {
344 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
345 sctp_ifap->ifn_p->ifn_name,
350 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
351 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
352 sctp_ifap->ifn_p->ifn_index, ifn_index);
357 sctp_ifap->localifa_flags &= (~SCTP_ADDR_VALID);
358 sctp_ifap->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE;
360 SCTP_IPI_ADDR_RUNLOCK();
364 sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr,
365 const char *if_name, uint32_t ifn_index)
367 struct sctp_vrf *vrf;
368 struct sctp_ifa *sctp_ifap = NULL;
370 SCTP_IPI_ADDR_RLOCK();
371 vrf = sctp_find_vrf(vrf_id);
373 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
377 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
378 if (sctp_ifap == NULL) {
379 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
382 if (sctp_ifap->ifn_p == NULL) {
383 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unuseable\n");
389 len1 = strlen(if_name);
390 len2 = strlen(sctp_ifap->ifn_p->ifn_name);
392 SCTPDBG(SCTP_DEBUG_PCB4, "IFN of ifa names different length %d vs %d - ignored\n",
396 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, len1) != 0) {
397 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
398 sctp_ifap->ifn_p->ifn_name,
403 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
404 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
405 sctp_ifap->ifn_p->ifn_index, ifn_index);
410 sctp_ifap->localifa_flags &= (~SCTP_ADDR_IFA_UNUSEABLE);
411 sctp_ifap->localifa_flags |= SCTP_ADDR_VALID;
413 SCTP_IPI_ADDR_RUNLOCK();
417 * Add an ifa to an ifn.
418 * Register the interface as necessary.
419 * NOTE: ADDR write lock MUST be held.
422 sctp_add_ifa_to_ifn(struct sctp_ifn *sctp_ifnp, struct sctp_ifa *sctp_ifap)
426 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
427 sctp_ifap->ifn_p = sctp_ifnp;
428 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
429 /* update address counts */
430 sctp_ifnp->ifa_count++;
431 ifa_af = sctp_ifap->address.sa.sa_family;
446 if (sctp_ifnp->ifa_count == 1) {
447 /* register the new interface */
448 SCTP_REGISTER_INTERFACE(sctp_ifnp->ifn_index, ifa_af);
449 sctp_ifnp->registered_af = ifa_af;
454 * Remove an ifa from its ifn.
455 * If no more addresses exist, remove the ifn too. Otherwise, re-register
456 * the interface based on the remaining address families left.
457 * NOTE: ADDR write lock MUST be held.
460 sctp_remove_ifa_from_ifn(struct sctp_ifa *sctp_ifap)
464 LIST_REMOVE(sctp_ifap, next_ifa);
465 if (sctp_ifap->ifn_p) {
466 /* update address counts */
467 sctp_ifap->ifn_p->ifa_count--;
468 switch (sctp_ifap->address.sa.sa_family) {
471 sctp_ifap->ifn_p->num_v4--;
476 sctp_ifap->ifn_p->num_v6--;
483 ifn_index = sctp_ifap->ifn_p->ifn_index;
484 if (LIST_EMPTY(&sctp_ifap->ifn_p->ifalist)) {
485 /* remove the ifn, possibly freeing it */
486 sctp_delete_ifn(sctp_ifap->ifn_p, SCTP_ADDR_LOCKED);
488 /* re-register address family type, if needed */
489 if ((sctp_ifap->ifn_p->num_v6 == 0) &&
490 (sctp_ifap->ifn_p->registered_af == AF_INET6)) {
491 SCTP_DEREGISTER_INTERFACE(ifn_index, AF_INET6);
492 SCTP_REGISTER_INTERFACE(ifn_index, AF_INET);
493 sctp_ifap->ifn_p->registered_af = AF_INET;
494 } else if ((sctp_ifap->ifn_p->num_v4 == 0) &&
495 (sctp_ifap->ifn_p->registered_af == AF_INET)) {
496 SCTP_DEREGISTER_INTERFACE(ifn_index, AF_INET);
497 SCTP_REGISTER_INTERFACE(ifn_index, AF_INET6);
498 sctp_ifap->ifn_p->registered_af = AF_INET6;
500 /* free the ifn refcount */
501 sctp_free_ifn(sctp_ifap->ifn_p);
503 sctp_ifap->ifn_p = NULL;
508 sctp_add_addr_to_vrf(uint32_t vrf_id, void *ifn, uint32_t ifn_index,
509 uint32_t ifn_type, const char *if_name, void *ifa,
510 struct sockaddr *addr, uint32_t ifa_flags,
513 struct sctp_vrf *vrf;
514 struct sctp_ifn *sctp_ifnp = NULL;
515 struct sctp_ifa *sctp_ifap = NULL;
516 struct sctp_ifalist *hash_addr_head;
517 struct sctp_ifnlist *hash_ifn_head;
518 uint32_t hash_of_addr;
522 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: adding address: ", vrf_id);
523 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
525 SCTP_IPI_ADDR_WLOCK();
526 sctp_ifnp = sctp_find_ifn(ifn, ifn_index);
528 vrf = sctp_ifnp->vrf;
530 vrf = sctp_find_vrf(vrf_id);
532 vrf = sctp_allocate_vrf(vrf_id);
534 SCTP_IPI_ADDR_WUNLOCK();
539 if (sctp_ifnp == NULL) {
541 * build one and add it, can't hold lock until after malloc
544 SCTP_IPI_ADDR_WUNLOCK();
545 SCTP_MALLOC(sctp_ifnp, struct sctp_ifn *,
546 sizeof(struct sctp_ifn), SCTP_M_IFN);
547 if (sctp_ifnp == NULL) {
549 panic("No memory for IFN");
553 memset(sctp_ifnp, 0, sizeof(struct sctp_ifn));
554 sctp_ifnp->ifn_index = ifn_index;
555 sctp_ifnp->ifn_p = ifn;
556 sctp_ifnp->ifn_type = ifn_type;
557 sctp_ifnp->refcount = 0;
558 sctp_ifnp->vrf = vrf;
559 atomic_add_int(&vrf->refcount, 1);
560 sctp_ifnp->ifn_mtu = SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, addr->sa_family);
561 if (if_name != NULL) {
562 memcpy(sctp_ifnp->ifn_name, if_name, SCTP_IFNAMSIZ);
564 memcpy(sctp_ifnp->ifn_name, "unknown", min(7, SCTP_IFNAMSIZ));
566 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
567 LIST_INIT(&sctp_ifnp->ifalist);
568 SCTP_IPI_ADDR_WLOCK();
569 LIST_INSERT_HEAD(hash_ifn_head, sctp_ifnp, next_bucket);
570 LIST_INSERT_HEAD(&vrf->ifnlist, sctp_ifnp, next_ifn);
571 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
574 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
576 /* Hmm, it already exists? */
577 if ((sctp_ifap->ifn_p) &&
578 (sctp_ifap->ifn_p->ifn_index == ifn_index)) {
579 SCTPDBG(SCTP_DEBUG_PCB4, "Using existing ifn %s (0x%x) for ifa %p\n",
580 sctp_ifap->ifn_p->ifn_name, ifn_index,
583 /* Remove the created one that we don't want */
584 sctp_delete_ifn(sctp_ifnp, SCTP_ADDR_LOCKED);
586 if (sctp_ifap->localifa_flags & SCTP_BEING_DELETED) {
587 /* easy to solve, just switch back to active */
588 SCTPDBG(SCTP_DEBUG_PCB4, "Clearing deleted ifa flag\n");
589 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
590 sctp_ifap->ifn_p = sctp_ifnp;
591 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
594 SCTP_IPI_ADDR_WUNLOCK();
597 if (sctp_ifap->ifn_p) {
599 * The last IFN gets the address, remove the
602 SCTPDBG(SCTP_DEBUG_PCB4, "Moving ifa %p from %s (0x%x) to %s (0x%x)\n",
603 sctp_ifap, sctp_ifap->ifn_p->ifn_name,
604 sctp_ifap->ifn_p->ifn_index, if_name,
606 /* remove the address from the old ifn */
607 sctp_remove_ifa_from_ifn(sctp_ifap);
608 /* move the address over to the new ifn */
609 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
610 goto exit_stage_left;
612 /* repair ifnp which was NULL ? */
613 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
614 SCTPDBG(SCTP_DEBUG_PCB4, "Repairing ifn %p for ifa %p\n",
615 sctp_ifnp, sctp_ifap);
616 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
618 goto exit_stage_left;
621 SCTP_IPI_ADDR_WUNLOCK();
622 SCTP_MALLOC(sctp_ifap, struct sctp_ifa *, sizeof(struct sctp_ifa), SCTP_M_IFA);
623 if (sctp_ifap == NULL) {
625 panic("No memory for IFA");
629 memset(sctp_ifap, 0, sizeof(struct sctp_ifa));
630 sctp_ifap->ifn_p = sctp_ifnp;
631 atomic_add_int(&sctp_ifnp->refcount, 1);
632 sctp_ifap->vrf_id = vrf_id;
633 sctp_ifap->ifa = ifa;
634 memcpy(&sctp_ifap->address, addr, addr->sa_len);
635 sctp_ifap->localifa_flags = SCTP_ADDR_VALID | SCTP_ADDR_DEFER_USE;
636 sctp_ifap->flags = ifa_flags;
638 switch (sctp_ifap->address.sa.sa_family) {
642 struct sockaddr_in *sin;
644 sin = (struct sockaddr_in *)&sctp_ifap->address.sin;
645 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
646 (IN4_ISLOOPBACK_ADDRESS(&sin->sin_addr))) {
647 sctp_ifap->src_is_loop = 1;
649 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
650 sctp_ifap->src_is_priv = 1;
654 new_ifn_af = AF_INET;
661 /* ok to use deprecated addresses? */
662 struct sockaddr_in6 *sin6;
664 sin6 = (struct sockaddr_in6 *)&sctp_ifap->address.sin6;
665 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
666 (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))) {
667 sctp_ifap->src_is_loop = 1;
669 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
670 sctp_ifap->src_is_priv = 1;
674 new_ifn_af = AF_INET6;
682 hash_of_addr = sctp_get_ifa_hash_val(&sctp_ifap->address.sa);
684 if ((sctp_ifap->src_is_priv == 0) &&
685 (sctp_ifap->src_is_loop == 0)) {
686 sctp_ifap->src_is_glob = 1;
688 SCTP_IPI_ADDR_WLOCK();
689 hash_addr_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
690 LIST_INSERT_HEAD(hash_addr_head, sctp_ifap, next_bucket);
691 sctp_ifap->refcount = 1;
692 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
693 sctp_ifnp->ifa_count++;
694 vrf->total_ifa_count++;
695 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
697 SCTP_REGISTER_INTERFACE(ifn_index, new_ifn_af);
698 sctp_ifnp->registered_af = new_ifn_af;
700 SCTP_IPI_ADDR_WUNLOCK();
703 * Bump up the refcount so that when the timer completes it
704 * will drop back down.
706 struct sctp_laddr *wi;
708 atomic_add_int(&sctp_ifap->refcount, 1);
709 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
712 * Gak, what can we do? We have lost an address
713 * change can you say HOSED?
715 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
716 /* Opps, must decrement the count */
717 sctp_del_addr_from_vrf(vrf_id, addr, ifn_index,
721 SCTP_INCR_LADDR_COUNT();
722 bzero(wi, sizeof(*wi));
723 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
725 wi->action = SCTP_ADD_IP_ADDRESS;
728 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
729 SCTP_WQ_ADDR_UNLOCK();
731 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
732 (struct sctp_inpcb *)NULL,
733 (struct sctp_tcb *)NULL,
734 (struct sctp_nets *)NULL);
736 /* it's ready for use */
737 sctp_ifap->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
743 sctp_del_addr_from_vrf(uint32_t vrf_id, struct sockaddr *addr,
744 uint32_t ifn_index, const char *if_name)
746 struct sctp_vrf *vrf;
747 struct sctp_ifa *sctp_ifap = NULL;
749 SCTP_IPI_ADDR_WLOCK();
750 vrf = sctp_find_vrf(vrf_id);
752 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
756 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: deleting address:", vrf_id);
757 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
759 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
761 /* Validate the delete */
762 if (sctp_ifap->ifn_p) {
766 * The name has priority over the ifn_index
767 * if its given. We do this especially for
768 * panda who might recycle indexes fast.
773 len1 = min(SCTP_IFNAMSIZ, strlen(if_name));
774 len2 = min(SCTP_IFNAMSIZ, strlen(sctp_ifap->ifn_p->ifn_name));
775 if (len1 && len2 && (len1 == len2)) {
776 /* we can compare them */
777 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, len1) == 0) {
779 * They match its a correct
787 /* last ditch check ifn_index */
788 if (ifn_index == sctp_ifap->ifn_p->ifn_index) {
793 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s does not match addresses\n",
794 ifn_index, ((if_name == NULL) ? "NULL" : if_name));
795 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s - ignoring delete\n",
796 sctp_ifap->ifn_p->ifn_index, sctp_ifap->ifn_p->ifn_name);
797 SCTP_IPI_ADDR_WUNLOCK();
801 SCTPDBG(SCTP_DEBUG_PCB4, "Deleting ifa %p\n", sctp_ifap);
802 sctp_ifap->localifa_flags &= SCTP_ADDR_VALID;
803 sctp_ifap->localifa_flags |= SCTP_BEING_DELETED;
804 vrf->total_ifa_count--;
805 LIST_REMOVE(sctp_ifap, next_bucket);
806 sctp_remove_ifa_from_ifn(sctp_ifap);
810 SCTPDBG(SCTP_DEBUG_PCB4, "Del Addr-ifn:%d Could not find address:",
812 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
817 SCTP_IPI_ADDR_WUNLOCK();
819 struct sctp_laddr *wi;
821 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
824 * Gak, what can we do? We have lost an address
825 * change can you say HOSED?
827 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
829 /* Oops, must decrement the count */
830 sctp_free_ifa(sctp_ifap);
833 SCTP_INCR_LADDR_COUNT();
834 bzero(wi, sizeof(*wi));
835 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
837 wi->action = SCTP_DEL_IP_ADDRESS;
840 * Should this really be a tailq? As it is we will process
841 * the newest first :-0
843 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
844 SCTP_WQ_ADDR_UNLOCK();
846 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
847 (struct sctp_inpcb *)NULL,
848 (struct sctp_tcb *)NULL,
849 (struct sctp_nets *)NULL);
855 static struct sctp_tcb *
856 sctp_tcb_special_locate(struct sctp_inpcb **inp_p, struct sockaddr *from,
857 struct sockaddr *to, struct sctp_nets **netp, uint32_t vrf_id)
859 /**** ASSUMES THE CALLER holds the INP_INFO_RLOCK */
861 * If we support the TCP model, then we must now dig through to see
862 * if we can find our endpoint in the list of tcp ep's.
864 uint16_t lport, rport;
865 struct sctppcbhead *ephead;
866 struct sctp_inpcb *inp;
867 struct sctp_laddr *laddr;
868 struct sctp_tcb *stcb;
869 struct sctp_nets *net;
871 if ((to == NULL) || (from == NULL)) {
874 switch (to->sa_family) {
877 if (from->sa_family == AF_INET) {
878 lport = ((struct sockaddr_in *)to)->sin_port;
879 rport = ((struct sockaddr_in *)from)->sin_port;
887 if (from->sa_family == AF_INET6) {
888 lport = ((struct sockaddr_in6 *)to)->sin6_port;
889 rport = ((struct sockaddr_in6 *)from)->sin6_port;
898 ephead = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
900 * Ok now for each of the guys in this bucket we must look and see:
901 * - Does the remote port match. - Does there single association's
902 * addresses match this address (to). If so we update p_ep to point
903 * to this ep and return the tcb from it.
905 LIST_FOREACH(inp, ephead, sctp_hash) {
907 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
908 SCTP_INP_RUNLOCK(inp);
911 if (lport != inp->sctp_lport) {
912 SCTP_INP_RUNLOCK(inp);
915 if (inp->def_vrf_id != vrf_id) {
916 SCTP_INP_RUNLOCK(inp);
919 /* check to see if the ep has one of the addresses */
920 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
921 /* We are NOT bound all, so look further */
924 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
926 if (laddr->ifa == NULL) {
927 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n", __FUNCTION__);
930 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
931 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
934 if (laddr->ifa->address.sa.sa_family ==
936 /* see if it matches */
939 if (from->sa_family == AF_INET) {
940 struct sockaddr_in *intf_addr,
943 intf_addr = &laddr->ifa->address.sin;
944 sin = (struct sockaddr_in *)to;
945 if (sin->sin_addr.s_addr ==
946 intf_addr->sin_addr.s_addr) {
953 if (from->sa_family == AF_INET6) {
954 struct sockaddr_in6 *intf_addr6;
955 struct sockaddr_in6 *sin6;
957 sin6 = (struct sockaddr_in6 *)
959 intf_addr6 = &laddr->ifa->address.sin6;
961 if (SCTP6_ARE_ADDR_EQUAL(sin6,
971 /* This endpoint does not have this address */
972 SCTP_INP_RUNLOCK(inp);
977 * Ok if we hit here the ep has the address, does it hold
981 stcb = LIST_FIRST(&inp->sctp_asoc_list);
983 SCTP_INP_RUNLOCK(inp);
987 if (stcb->rport != rport) {
988 /* remote port does not match. */
989 SCTP_TCB_UNLOCK(stcb);
990 SCTP_INP_RUNLOCK(inp);
993 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
994 SCTP_TCB_UNLOCK(stcb);
995 SCTP_INP_RUNLOCK(inp);
998 /* Does this TCB have a matching address? */
999 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1001 if (net->ro._l_addr.sa.sa_family != from->sa_family) {
1002 /* not the same family, can't be a match */
1005 switch (from->sa_family) {
1009 struct sockaddr_in *sin, *rsin;
1011 sin = (struct sockaddr_in *)&net->ro._l_addr;
1012 rsin = (struct sockaddr_in *)from;
1013 if (sin->sin_addr.s_addr ==
1014 rsin->sin_addr.s_addr) {
1020 * Update the endpoint
1024 SCTP_INP_RUNLOCK(inp);
1033 struct sockaddr_in6 *sin6, *rsin6;
1035 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1036 rsin6 = (struct sockaddr_in6 *)from;
1037 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1044 * Update the endpoint
1048 SCTP_INP_RUNLOCK(inp);
1059 SCTP_TCB_UNLOCK(stcb);
1060 SCTP_INP_RUNLOCK(inp);
1066 sctp_does_stcb_own_this_addr(struct sctp_tcb *stcb, struct sockaddr *to)
1068 int loopback_scope, ipv4_local_scope, local_scope, site_scope;
1069 int ipv4_addr_legal, ipv6_addr_legal;
1070 struct sctp_vrf *vrf;
1071 struct sctp_ifn *sctp_ifn;
1072 struct sctp_ifa *sctp_ifa;
1074 loopback_scope = stcb->asoc.loopback_scope;
1075 ipv4_local_scope = stcb->asoc.ipv4_local_scope;
1076 local_scope = stcb->asoc.local_scope;
1077 site_scope = stcb->asoc.site_scope;
1078 ipv4_addr_legal = ipv6_addr_legal = 0;
1079 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1080 ipv6_addr_legal = 1;
1081 if (SCTP_IPV6_V6ONLY(stcb->sctp_ep) == 0) {
1082 ipv4_addr_legal = 1;
1085 ipv4_addr_legal = 1;
1088 SCTP_IPI_ADDR_RLOCK();
1089 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
1091 /* no vrf, no addresses */
1092 SCTP_IPI_ADDR_RUNLOCK();
1095 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1096 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
1097 if ((loopback_scope == 0) &&
1098 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
1101 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
1102 if (sctp_is_addr_restricted(stcb, sctp_ifa) &&
1103 (!sctp_is_addr_pending(stcb, sctp_ifa))) {
1105 * We allow pending addresses, where
1106 * we have sent an asconf-add to be
1111 switch (sctp_ifa->address.sa.sa_family) {
1114 if (ipv4_addr_legal) {
1115 struct sockaddr_in *sin,
1118 sin = &sctp_ifa->address.sin;
1119 rsin = (struct sockaddr_in *)to;
1120 if ((ipv4_local_scope == 0) &&
1121 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
1124 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
1125 SCTP_IPI_ADDR_RUNLOCK();
1133 if (ipv6_addr_legal) {
1134 struct sockaddr_in6 *sin6,
1137 sin6 = &sctp_ifa->address.sin6;
1138 rsin6 = (struct sockaddr_in6 *)to;
1139 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
1140 if (local_scope == 0)
1142 if (sin6->sin6_scope_id == 0) {
1143 if (sa6_recoverscope(sin6) != 0)
1147 if ((site_scope == 0) &&
1148 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
1151 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
1152 SCTP_IPI_ADDR_RUNLOCK();
1165 struct sctp_laddr *laddr;
1167 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
1168 if (sctp_is_addr_restricted(stcb, laddr->ifa) &&
1169 (!sctp_is_addr_pending(stcb, laddr->ifa))) {
1171 * We allow pending addresses, where we have
1172 * sent an asconf-add to be considered
1177 if (laddr->ifa->address.sa.sa_family != to->sa_family) {
1180 switch (to->sa_family) {
1184 struct sockaddr_in *sin, *rsin;
1186 sin = (struct sockaddr_in *)&laddr->ifa->address.sin;
1187 rsin = (struct sockaddr_in *)to;
1188 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
1189 SCTP_IPI_ADDR_RUNLOCK();
1198 struct sockaddr_in6 *sin6, *rsin6;
1200 sin6 = (struct sockaddr_in6 *)&laddr->ifa->address.sin6;
1201 rsin6 = (struct sockaddr_in6 *)to;
1202 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
1203 SCTP_IPI_ADDR_RUNLOCK();
1217 SCTP_IPI_ADDR_RUNLOCK();
1224 * 1) If I return a NULL you must decrement any INP ref cnt. 2) If I find an
1225 * stcb, both will be locked (locked_tcb and stcb) but decrement will be done
1226 * (if locked == NULL). 3) Decrement happens on return ONLY if locked ==
1231 sctp_findassociation_ep_addr(struct sctp_inpcb **inp_p, struct sockaddr *remote,
1232 struct sctp_nets **netp, struct sockaddr *local, struct sctp_tcb *locked_tcb)
1234 struct sctpasochead *head;
1235 struct sctp_inpcb *inp;
1236 struct sctp_tcb *stcb = NULL;
1237 struct sctp_nets *net;
1241 if (remote->sa_family == AF_INET) {
1242 rport = (((struct sockaddr_in *)remote)->sin_port);
1243 } else if (remote->sa_family == AF_INET6) {
1244 rport = (((struct sockaddr_in6 *)remote)->sin6_port);
1250 * UN-lock so we can do proper locking here this occurs when
1251 * called from load_addresses_from_init.
1253 atomic_add_int(&locked_tcb->asoc.refcnt, 1);
1254 SCTP_TCB_UNLOCK(locked_tcb);
1256 SCTP_INP_INFO_RLOCK();
1257 if (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
1259 * Now either this guy is our listener or it's the
1260 * connector. If it is the one that issued the connect, then
1261 * it's only chance is to be the first TCB in the list. If
1262 * it is the acceptor, then do the special_lookup to hash
1263 * and find the real inp.
1265 if ((inp->sctp_socket) && (inp->sctp_socket->so_qlimit)) {
1266 /* to is peer addr, from is my addr */
1267 stcb = sctp_tcb_special_locate(inp_p, remote, local,
1268 netp, inp->def_vrf_id);
1269 if ((stcb != NULL) && (locked_tcb == NULL)) {
1270 /* we have a locked tcb, lower refcount */
1271 SCTP_INP_DECR_REF(inp);
1273 if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
1274 SCTP_INP_RLOCK(locked_tcb->sctp_ep);
1275 SCTP_TCB_LOCK(locked_tcb);
1276 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1277 SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
1279 SCTP_INP_INFO_RUNLOCK();
1282 SCTP_INP_WLOCK(inp);
1283 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1286 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1290 SCTP_TCB_LOCK(stcb);
1292 if (stcb->rport != rport) {
1293 /* remote port does not match. */
1294 SCTP_TCB_UNLOCK(stcb);
1297 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1298 SCTP_TCB_UNLOCK(stcb);
1301 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1302 SCTP_TCB_UNLOCK(stcb);
1305 /* now look at the list of remote addresses */
1306 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1308 if (net == (TAILQ_NEXT(net, sctp_next))) {
1309 panic("Corrupt net list");
1312 if (net->ro._l_addr.sa.sa_family !=
1313 remote->sa_family) {
1314 /* not the same family */
1317 switch (remote->sa_family) {
1321 struct sockaddr_in *sin,
1324 sin = (struct sockaddr_in *)
1326 rsin = (struct sockaddr_in *)remote;
1327 if (sin->sin_addr.s_addr ==
1328 rsin->sin_addr.s_addr) {
1333 if (locked_tcb == NULL) {
1334 SCTP_INP_DECR_REF(inp);
1335 } else if (locked_tcb != stcb) {
1336 SCTP_TCB_LOCK(locked_tcb);
1339 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1341 SCTP_INP_WUNLOCK(inp);
1342 SCTP_INP_INFO_RUNLOCK();
1351 struct sockaddr_in6 *sin6,
1354 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1355 rsin6 = (struct sockaddr_in6 *)remote;
1356 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1362 if (locked_tcb == NULL) {
1363 SCTP_INP_DECR_REF(inp);
1364 } else if (locked_tcb != stcb) {
1365 SCTP_TCB_LOCK(locked_tcb);
1368 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1370 SCTP_INP_WUNLOCK(inp);
1371 SCTP_INP_INFO_RUNLOCK();
1382 SCTP_TCB_UNLOCK(stcb);
1385 SCTP_INP_WLOCK(inp);
1386 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1389 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport,
1390 inp->sctp_hashmark)];
1394 LIST_FOREACH(stcb, head, sctp_tcbhash) {
1395 if (stcb->rport != rport) {
1396 /* remote port does not match */
1399 SCTP_TCB_LOCK(stcb);
1400 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1401 SCTP_TCB_UNLOCK(stcb);
1404 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1405 SCTP_TCB_UNLOCK(stcb);
1408 /* now look at the list of remote addresses */
1409 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1411 if (net == (TAILQ_NEXT(net, sctp_next))) {
1412 panic("Corrupt net list");
1415 if (net->ro._l_addr.sa.sa_family !=
1416 remote->sa_family) {
1417 /* not the same family */
1420 switch (remote->sa_family) {
1424 struct sockaddr_in *sin,
1427 sin = (struct sockaddr_in *)
1429 rsin = (struct sockaddr_in *)remote;
1430 if (sin->sin_addr.s_addr ==
1431 rsin->sin_addr.s_addr) {
1436 if (locked_tcb == NULL) {
1437 SCTP_INP_DECR_REF(inp);
1438 } else if (locked_tcb != stcb) {
1439 SCTP_TCB_LOCK(locked_tcb);
1442 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1444 SCTP_INP_WUNLOCK(inp);
1445 SCTP_INP_INFO_RUNLOCK();
1454 struct sockaddr_in6 *sin6,
1457 sin6 = (struct sockaddr_in6 *)
1459 rsin6 = (struct sockaddr_in6 *)remote;
1460 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1466 if (locked_tcb == NULL) {
1467 SCTP_INP_DECR_REF(inp);
1468 } else if (locked_tcb != stcb) {
1469 SCTP_TCB_LOCK(locked_tcb);
1472 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1474 SCTP_INP_WUNLOCK(inp);
1475 SCTP_INP_INFO_RUNLOCK();
1486 SCTP_TCB_UNLOCK(stcb);
1490 /* clean up for returning null */
1492 SCTP_TCB_LOCK(locked_tcb);
1493 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1495 SCTP_INP_WUNLOCK(inp);
1496 SCTP_INP_INFO_RUNLOCK();
1502 * Find an association for a specific endpoint using the association id given
1503 * out in the COMM_UP notification
1507 sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1510 * Use my the assoc_id to find a endpoint
1512 struct sctpasochead *head;
1513 struct sctp_tcb *stcb;
1517 SCTP_PRINTF("TSNH ep_associd\n");
1520 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1521 SCTP_PRINTF("TSNH ep_associd0\n");
1524 id = (uint32_t) asoc_id;
1525 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
1527 /* invalid id TSNH */
1528 SCTP_PRINTF("TSNH ep_associd1\n");
1531 LIST_FOREACH(stcb, head, sctp_tcbasocidhash) {
1532 if (stcb->asoc.assoc_id == id) {
1533 if (inp != stcb->sctp_ep) {
1535 * some other guy has the same id active (id
1538 SCTP_PRINTF("TSNH ep_associd2\n");
1541 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1545 SCTP_TCB_LOCK(stcb);
1555 sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1557 struct sctp_tcb *stcb;
1559 SCTP_INP_RLOCK(inp);
1560 stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
1561 SCTP_INP_RUNLOCK(inp);
1566 static struct sctp_inpcb *
1567 sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head,
1568 uint16_t lport, uint32_t vrf_id)
1570 struct sctp_inpcb *inp;
1571 struct sctp_laddr *laddr;
1574 struct sockaddr_in *sin;
1578 struct sockaddr_in6 *sin6;
1579 struct sockaddr_in6 *intf_addr6;
1586 * Endpoint probe expects that the INP_INFO is locked.
1594 switch (nam->sa_family) {
1597 sin = (struct sockaddr_in *)nam;
1602 sin6 = (struct sockaddr_in6 *)nam;
1606 /* unsupported family */
1613 LIST_FOREACH(inp, head, sctp_hash) {
1614 SCTP_INP_RLOCK(inp);
1615 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1616 SCTP_INP_RUNLOCK(inp);
1619 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) &&
1620 (inp->sctp_lport == lport)) {
1623 if ((nam->sa_family == AF_INET) &&
1624 (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1625 SCTP_IPV6_V6ONLY(inp)) {
1626 /* IPv4 on a IPv6 socket with ONLY IPv6 set */
1627 SCTP_INP_RUNLOCK(inp);
1632 /* A V6 address and the endpoint is NOT bound V6 */
1633 if (nam->sa_family == AF_INET6 &&
1634 (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
1635 SCTP_INP_RUNLOCK(inp);
1639 /* does a VRF id match? */
1641 if (inp->def_vrf_id == vrf_id)
1644 SCTP_INP_RUNLOCK(inp);
1649 SCTP_INP_RUNLOCK(inp);
1651 switch (nam->sa_family) {
1654 if (sin->sin_addr.s_addr == INADDR_ANY) {
1655 /* Can't hunt for one that has no address specified */
1662 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1663 /* Can't hunt for one that has no address specified */
1672 * ok, not bound to all so see if we can find a EP bound to this
1675 LIST_FOREACH(inp, head, sctp_hash) {
1676 SCTP_INP_RLOCK(inp);
1677 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1678 SCTP_INP_RUNLOCK(inp);
1681 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
1682 SCTP_INP_RUNLOCK(inp);
1686 * Ok this could be a likely candidate, look at all of its
1689 if (inp->sctp_lport != lport) {
1690 SCTP_INP_RUNLOCK(inp);
1693 /* does a VRF id match? */
1695 if (inp->def_vrf_id == vrf_id)
1699 SCTP_INP_RUNLOCK(inp);
1702 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1703 if (laddr->ifa == NULL) {
1704 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
1708 SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ",
1710 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1711 SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n");
1714 if (laddr->ifa->address.sa.sa_family == nam->sa_family) {
1715 /* possible, see if it matches */
1716 switch (nam->sa_family) {
1719 if (sin->sin_addr.s_addr ==
1720 laddr->ifa->address.sin.sin_addr.s_addr) {
1721 SCTP_INP_RUNLOCK(inp);
1728 intf_addr6 = &laddr->ifa->address.sin6;
1729 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1731 SCTP_INP_RUNLOCK(inp);
1739 SCTP_INP_RUNLOCK(inp);
1745 static struct sctp_inpcb *
1746 sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
1748 struct sctppcbhead *head;
1749 struct sctp_inpcb *t_inp;
1752 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1753 SCTP_BASE_INFO(hashmark))];
1754 LIST_FOREACH(t_inp, head, sctp_hash) {
1755 if (t_inp->sctp_lport != lport) {
1758 /* is it in the VRF in question */
1760 if (t_inp->def_vrf_id == vrf_id)
1765 /* This one is in use. */
1766 /* check the v6/v4 binding issue */
1767 if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1768 SCTP_IPV6_V6ONLY(t_inp)) {
1769 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1770 /* collision in V6 space */
1773 /* inp is BOUND_V4 no conflict */
1776 } else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1777 /* t_inp is bound v4 and v6, conflict always */
1780 /* t_inp is bound only V4 */
1781 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1782 SCTP_IPV6_V6ONLY(inp)) {
1786 /* else fall through to conflict */
1795 sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
1797 /* For 1-2-1 with port reuse */
1798 struct sctppcbhead *head;
1799 struct sctp_inpcb *tinp;
1801 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
1802 /* only works with port reuse on */
1805 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) {
1808 SCTP_INP_RUNLOCK(inp);
1809 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport,
1810 SCTP_BASE_INFO(hashmark))];
1811 /* Kick out all non-listeners to the TCP hash */
1812 LIST_FOREACH(tinp, head, sctp_hash) {
1813 if (tinp->sctp_lport != inp->sctp_lport) {
1816 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1819 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
1822 if (tinp->sctp_socket->so_qlimit) {
1825 SCTP_INP_WLOCK(tinp);
1826 LIST_REMOVE(tinp, sctp_hash);
1827 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))];
1828 tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
1829 LIST_INSERT_HEAD(head, tinp, sctp_hash);
1830 SCTP_INP_WUNLOCK(tinp);
1832 SCTP_INP_WLOCK(inp);
1833 /* Pull from where he was */
1834 LIST_REMOVE(inp, sctp_hash);
1835 inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL;
1836 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))];
1837 LIST_INSERT_HEAD(head, inp, sctp_hash);
1838 SCTP_INP_WUNLOCK(inp);
1839 SCTP_INP_RLOCK(inp);
1845 sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock,
1849 * First we check the hash table to see if someone has this port
1850 * bound with just the port.
1852 struct sctp_inpcb *inp;
1853 struct sctppcbhead *head;
1858 struct sockaddr_in *sin;
1862 struct sockaddr_in6 *sin6;
1866 switch (nam->sa_family) {
1869 sin = (struct sockaddr_in *)nam;
1870 lport = ((struct sockaddr_in *)nam)->sin_port;
1875 sin6 = (struct sockaddr_in6 *)nam;
1876 lport = ((struct sockaddr_in6 *)nam)->sin6_port;
1883 * I could cheat here and just cast to one of the types but we will
1884 * do it right. It also provides the check against an Unsupported
1887 /* Find the head of the ALLADDR chain */
1888 if (have_lock == 0) {
1889 SCTP_INP_INFO_RLOCK();
1891 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1892 SCTP_BASE_INFO(hashmark))];
1893 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1896 * If the TCP model exists it could be that the main listening
1897 * endpoint is gone but there still exists a connected socket for
1898 * this guy. If so we can return the first one that we find. This
1899 * may NOT be the correct one so the caller should be wary on the
1900 * returned INP. Currently the only caller that sets find_tcp_pool
1901 * is in bindx where we are verifying that a user CAN bind the
1902 * address. He either has bound it already, or someone else has, or
1903 * its open to bind, so this is good enough.
1905 if (inp == NULL && find_tcp_pool) {
1906 for (i = 0; i < SCTP_BASE_INFO(hashtcpmark) + 1; i++) {
1907 head = &SCTP_BASE_INFO(sctp_tcpephash)[i];
1908 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1915 SCTP_INP_INCR_REF(inp);
1917 if (have_lock == 0) {
1918 SCTP_INP_INFO_RUNLOCK();
1924 * Find an association for an endpoint with the pointer to whom you want to
1925 * send to and the endpoint pointer. The address can be IPv4 or IPv6. We may
1926 * need to change the *to to some other struct like a mbuf...
1929 sctp_findassociation_addr_sa(struct sockaddr *to, struct sockaddr *from,
1930 struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool,
1933 struct sctp_inpcb *inp = NULL;
1934 struct sctp_tcb *retval;
1936 SCTP_INP_INFO_RLOCK();
1937 if (find_tcp_pool) {
1938 if (inp_p != NULL) {
1939 retval = sctp_tcb_special_locate(inp_p, from, to, netp,
1942 retval = sctp_tcb_special_locate(&inp, from, to, netp,
1945 if (retval != NULL) {
1946 SCTP_INP_INFO_RUNLOCK();
1950 inp = sctp_pcb_findep(to, 0, 1, vrf_id);
1951 if (inp_p != NULL) {
1954 SCTP_INP_INFO_RUNLOCK();
1960 * ok, we have an endpoint, now lets find the assoc for it (if any)
1961 * we now place the source address or from in the to of the find
1962 * endpoint call. Since in reality this chain is used from the
1963 * inbound packet side.
1965 if (inp_p != NULL) {
1966 retval = sctp_findassociation_ep_addr(inp_p, from, netp, to,
1969 retval = sctp_findassociation_ep_addr(&inp, from, netp, to,
1977 * This routine will grub through the mbuf that is a INIT or INIT-ACK and
1978 * find all addresses that the sender has specified in any address list. Each
1979 * address will be used to lookup the TCB and see if one exits.
1981 static struct sctp_tcb *
1982 sctp_findassociation_special_addr(struct mbuf *m, int iphlen, int offset,
1983 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp,
1984 struct sockaddr *dest)
1986 struct sctp_paramhdr *phdr, parm_buf;
1987 struct sctp_tcb *retval;
1988 uint32_t ptype, plen;
1991 struct sockaddr_in sin4;
1995 struct sockaddr_in6 sin6;
2000 memset(&sin4, 0, sizeof(sin4));
2001 sin4.sin_len = sizeof(sin4);
2002 sin4.sin_family = AF_INET;
2003 sin4.sin_port = sh->src_port;
2006 memset(&sin6, 0, sizeof(sin6));
2007 sin6.sin6_len = sizeof(sin6);
2008 sin6.sin6_family = AF_INET6;
2009 sin6.sin6_port = sh->src_port;
2013 offset += sizeof(struct sctp_init_chunk);
2015 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
2016 while (phdr != NULL) {
2017 /* now we must see if we want the parameter */
2018 ptype = ntohs(phdr->param_type);
2019 plen = ntohs(phdr->param_length);
2024 if (ptype == SCTP_IPV4_ADDRESS &&
2025 plen == sizeof(struct sctp_ipv4addr_param)) {
2026 /* Get the rest of the address */
2027 struct sctp_ipv4addr_param ip4_parm, *p4;
2029 phdr = sctp_get_next_param(m, offset,
2030 (struct sctp_paramhdr *)&ip4_parm, min(plen, sizeof(ip4_parm)));
2034 p4 = (struct sctp_ipv4addr_param *)phdr;
2035 memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr));
2037 retval = sctp_findassociation_ep_addr(inp_p,
2038 (struct sockaddr *)&sin4, netp, dest, NULL);
2039 if (retval != NULL) {
2045 if (ptype == SCTP_IPV6_ADDRESS &&
2046 plen == sizeof(struct sctp_ipv6addr_param)) {
2047 /* Get the rest of the address */
2048 struct sctp_ipv6addr_param ip6_parm, *p6;
2050 phdr = sctp_get_next_param(m, offset,
2051 (struct sctp_paramhdr *)&ip6_parm, min(plen, sizeof(ip6_parm)));
2055 p6 = (struct sctp_ipv6addr_param *)phdr;
2056 memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr));
2058 retval = sctp_findassociation_ep_addr(inp_p,
2059 (struct sockaddr *)&sin6, netp, dest, NULL);
2060 if (retval != NULL) {
2065 offset += SCTP_SIZE32(plen);
2066 phdr = sctp_get_next_param(m, offset, &parm_buf,
2072 static struct sctp_tcb *
2073 sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag,
2074 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport,
2075 uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
2078 * Use my vtag to hash. If we find it we then verify the source addr
2079 * is in the assoc. If all goes well we save a bit on rec of a
2082 struct sctpasochead *head;
2083 struct sctp_nets *net;
2084 struct sctp_tcb *stcb;
2088 SCTP_INP_INFO_RLOCK();
2089 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag,
2090 SCTP_BASE_INFO(hashasocmark))];
2093 SCTP_INP_INFO_RUNLOCK();
2096 LIST_FOREACH(stcb, head, sctp_asocs) {
2097 SCTP_INP_RLOCK(stcb->sctp_ep);
2098 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
2099 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2102 SCTP_TCB_LOCK(stcb);
2103 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2104 if (stcb->asoc.my_vtag == vtag) {
2106 if (stcb->rport != rport) {
2107 SCTP_TCB_UNLOCK(stcb);
2110 if (stcb->sctp_ep->sctp_lport != lport) {
2111 SCTP_TCB_UNLOCK(stcb);
2114 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
2115 SCTP_TCB_UNLOCK(stcb);
2118 /* RRS:Need toaddr check here */
2119 if (sctp_does_stcb_own_this_addr(stcb, to) == 0) {
2120 /* Endpoint does not own this address */
2121 SCTP_TCB_UNLOCK(stcb);
2126 * If we have both vtags that's all we match
2129 if (stcb->asoc.peer_vtag == remote_tag) {
2131 * If both tags match we consider it
2132 * conclusive and check NO
2133 * source/destination addresses
2138 if (skip_src_check) {
2141 net = sctp_findnet(stcb, from);
2143 *netp = NULL; /* unknown */
2146 *inp_p = stcb->sctp_ep;
2147 SCTP_INP_INFO_RUNLOCK();
2150 net = sctp_findnet(stcb, from);
2154 SCTP_STAT_INCR(sctps_vtagexpress);
2155 *inp_p = stcb->sctp_ep;
2156 SCTP_INP_INFO_RUNLOCK();
2160 * not him, this should only happen in rare
2161 * cases so I peg it.
2163 SCTP_STAT_INCR(sctps_vtagbogus);
2166 SCTP_TCB_UNLOCK(stcb);
2168 SCTP_INP_INFO_RUNLOCK();
2173 * Find an association with the pointer to the inbound IP packet. This can be
2174 * a IPv4 or IPv6 packet.
2177 sctp_findassociation_addr(struct mbuf *m, int iphlen, int offset,
2178 struct sctphdr *sh, struct sctp_chunkhdr *ch,
2179 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2183 struct sctp_tcb *retval;
2184 struct sockaddr_storage to_store, from_store;
2185 struct sockaddr *to = (struct sockaddr *)&to_store;
2186 struct sockaddr *from = (struct sockaddr *)&from_store;
2187 struct sctp_inpcb *inp;
2189 iph = mtod(m, struct ip *);
2190 switch (iph->ip_v) {
2195 struct sockaddr_in *from4;
2197 from4 = (struct sockaddr_in *)&from_store;
2198 bzero(from4, sizeof(*from4));
2199 from4->sin_family = AF_INET;
2200 from4->sin_len = sizeof(struct sockaddr_in);
2201 from4->sin_addr.s_addr = iph->ip_src.s_addr;
2202 from4->sin_port = sh->src_port;
2207 case IPV6_VERSION >> 4:
2210 struct ip6_hdr *ip6;
2211 struct sockaddr_in6 *from6;
2213 ip6 = mtod(m, struct ip6_hdr *);
2214 from6 = (struct sockaddr_in6 *)&from_store;
2215 bzero(from6, sizeof(*from6));
2216 from6->sin6_family = AF_INET6;
2217 from6->sin6_len = sizeof(struct sockaddr_in6);
2218 from6->sin6_addr = ip6->ip6_src;
2219 from6->sin6_port = sh->src_port;
2220 /* Get the scopes in properly to the sin6 addr's */
2221 /* we probably don't need these operations */
2222 (void)sa6_recoverscope(from6);
2223 sa6_embedscope(from6, MODULE_GLOBAL(ip6_use_defzone));
2228 /* Currently not supported. */
2233 switch (iph->ip_v) {
2238 struct sockaddr_in *to4;
2240 to4 = (struct sockaddr_in *)&to_store;
2241 bzero(to4, sizeof(*to4));
2242 to4->sin_family = AF_INET;
2243 to4->sin_len = sizeof(struct sockaddr_in);
2244 to4->sin_addr.s_addr = iph->ip_dst.s_addr;
2245 to4->sin_port = sh->dest_port;
2250 case IPV6_VERSION >> 4:
2253 struct ip6_hdr *ip6;
2254 struct sockaddr_in6 *to6;
2256 ip6 = mtod(m, struct ip6_hdr *);
2257 to6 = (struct sockaddr_in6 *)&to_store;
2258 bzero(to6, sizeof(*to6));
2259 to6->sin6_family = AF_INET6;
2260 to6->sin6_len = sizeof(struct sockaddr_in6);
2261 to6->sin6_addr = ip6->ip6_dst;
2262 to6->sin6_port = sh->dest_port;
2263 /* Get the scopes in properly to the sin6 addr's */
2264 /* we probably don't need these operations */
2265 (void)sa6_recoverscope(to6);
2266 sa6_embedscope(to6, MODULE_GLOBAL(ip6_use_defzone));
2275 /* we only go down this path if vtag is non-zero */
2276 retval = sctp_findassoc_by_vtag(from, to, ntohl(sh->v_tag),
2277 inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0);
2283 if ((ch->chunk_type != SCTP_INITIATION) &&
2284 (ch->chunk_type != SCTP_INITIATION_ACK) &&
2285 (ch->chunk_type != SCTP_COOKIE_ACK) &&
2286 (ch->chunk_type != SCTP_COOKIE_ECHO)) {
2287 /* Other chunk types go to the tcp pool. */
2291 retval = sctp_findassociation_addr_sa(to, from, inp_p, netp,
2292 find_tcp_pool, vrf_id);
2295 retval = sctp_findassociation_addr_sa(to, from, &inp, netp,
2296 find_tcp_pool, vrf_id);
2298 SCTPDBG(SCTP_DEBUG_PCB1, "retval:%p inp:%p\n", retval, inp);
2299 if (retval == NULL && inp) {
2300 /* Found a EP but not this address */
2301 if ((ch->chunk_type == SCTP_INITIATION) ||
2302 (ch->chunk_type == SCTP_INITIATION_ACK)) {
2304 * special hook, we do NOT return linp or an
2305 * association that is linked to an existing
2306 * association that is under the TCP pool (i.e. no
2307 * listener exists). The endpoint finding routine
2308 * will always find a listener before examining the
2311 if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
2317 retval = sctp_findassociation_special_addr(m, iphlen,
2318 offset, sh, &inp, netp, to);
2319 if (inp_p != NULL) {
2324 SCTPDBG(SCTP_DEBUG_PCB1, "retval is %p\n", retval);
2329 * lookup an association by an ASCONF lookup address.
2330 * if the lookup address is 0.0.0.0 or ::0, use the vtag to do the lookup
2333 sctp_findassociation_ep_asconf(struct mbuf *m, int iphlen, int offset,
2334 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2336 struct sctp_tcb *stcb;
2337 struct sockaddr_storage local_store, remote_store;
2338 struct sockaddr *to;
2340 struct sctp_paramhdr parm_buf, *phdr;
2342 int zero_address = 0;
2345 struct sockaddr_in *sin;
2349 struct ip6_hdr *ip6;
2350 struct sockaddr_in6 *sin6;
2354 memset(&local_store, 0, sizeof(local_store));
2355 memset(&remote_store, 0, sizeof(remote_store));
2356 to = (struct sockaddr *)&local_store;
2357 /* First get the destination address setup too. */
2358 iph = mtod(m, struct ip *);
2359 switch (iph->ip_v) {
2363 sin = (struct sockaddr_in *)&local_store;
2364 sin->sin_family = AF_INET;
2365 sin->sin_len = sizeof(*sin);
2366 sin->sin_port = sh->dest_port;
2367 sin->sin_addr.s_addr = iph->ip_dst.s_addr;
2371 case IPV6_VERSION >> 4:
2373 ip6 = mtod(m, struct ip6_hdr *);
2374 sin6 = (struct sockaddr_in6 *)&local_store;
2375 sin6->sin6_family = AF_INET6;
2376 sin6->sin6_len = sizeof(*sin6);
2377 sin6->sin6_port = sh->dest_port;
2378 sin6->sin6_addr = ip6->ip6_dst;
2385 phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk),
2386 &parm_buf, sizeof(struct sctp_paramhdr));
2388 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n",
2392 ptype = (int)((uint32_t) ntohs(phdr->param_type));
2393 /* get the correlation address */
2396 case SCTP_IPV6_ADDRESS:
2398 /* ipv6 address param */
2399 struct sctp_ipv6addr_param *p6, p6_buf;
2401 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) {
2404 p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m,
2405 offset + sizeof(struct sctp_asconf_chunk),
2406 &p6_buf.ph, sizeof(*p6));
2408 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n",
2412 sin6 = (struct sockaddr_in6 *)&remote_store;
2413 sin6->sin6_family = AF_INET6;
2414 sin6->sin6_len = sizeof(*sin6);
2415 sin6->sin6_port = sh->src_port;
2416 memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr));
2417 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
2423 case SCTP_IPV4_ADDRESS:
2425 /* ipv4 address param */
2426 struct sctp_ipv4addr_param *p4, p4_buf;
2428 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) {
2431 p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m,
2432 offset + sizeof(struct sctp_asconf_chunk),
2433 &p4_buf.ph, sizeof(*p4));
2435 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n",
2439 sin = (struct sockaddr_in *)&remote_store;
2440 sin->sin_family = AF_INET;
2441 sin->sin_len = sizeof(*sin);
2442 sin->sin_port = sh->src_port;
2443 memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr));
2444 if (sin->sin_addr.s_addr == INADDR_ANY)
2450 /* invalid address param type */
2455 stcb = sctp_findassoc_by_vtag(NULL, to, ntohl(sh->v_tag), inp_p,
2456 netp, sh->src_port, sh->dest_port, 1, vrf_id, 0);
2458 * printf("findassociation_ep_asconf: zero lookup address
2459 * finds stcb 0x%x\n", (uint32_t)stcb);
2462 stcb = sctp_findassociation_ep_addr(inp_p,
2463 (struct sockaddr *)&remote_store, netp,
2471 * allocate a sctp_inpcb and setup a temporary binding to a port/all
2472 * addresses. This way if we don't get a bind we by default pick a ephemeral
2473 * port with all addresses bound.
2476 sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
2479 * we get called when a new endpoint starts up. We need to allocate
2480 * the sctp_inpcb structure from the zone and init it. Mark it as
2481 * unbound and find a port that we can use as an ephemeral with
2482 * INADDR_ANY. If the user binds later no problem we can then add in
2483 * the specific addresses. And setup the default parameters for the
2487 struct sctp_inpcb *inp;
2489 struct timeval time;
2490 sctp_sharedkey_t *null_key;
2494 SCTP_INP_INFO_WLOCK();
2495 inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb);
2497 SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n");
2498 SCTP_INP_INFO_WUNLOCK();
2499 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2503 bzero(inp, sizeof(*inp));
2505 /* bump generations */
2506 /* setup socket pointers */
2507 inp->sctp_socket = so;
2508 inp->ip_inp.inp.inp_socket = so;
2510 if (MODULE_GLOBAL(ip6_auto_flowlabel)) {
2511 inp->ip_inp.inp.inp_flags |= IN6P_AUTOFLOWLABEL;
2514 inp->sctp_associd_counter = 1;
2515 inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT;
2516 inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
2517 inp->sctp_cmt_on_off = SCTP_BASE_SYSCTL(sctp_cmt_on_off);
2518 inp->sctp_ecn_enable = SCTP_BASE_SYSCTL(sctp_ecn_enable);
2519 /* init the small hash table we use to track asocid <-> tcb */
2520 inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark);
2521 if (inp->sctp_asocidhash == NULL) {
2522 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2523 SCTP_INP_INFO_WUNLOCK();
2528 struct inpcbpolicy *pcb_sp = NULL;
2530 error = ipsec_init_policy(so, &pcb_sp);
2531 /* Arrange to share the policy */
2532 inp->ip_inp.inp.inp_sp = pcb_sp;
2533 ((struct in6pcb *)(&inp->ip_inp.inp))->in6p_sp = pcb_sp;
2536 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2537 SCTP_INP_INFO_WUNLOCK();
2541 SCTP_INCR_EP_COUNT();
2542 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
2543 SCTP_INP_INFO_WUNLOCK();
2545 so->so_pcb = (caddr_t)inp;
2547 if (SCTP_SO_TYPE(so) == SOCK_SEQPACKET) {
2548 /* UDP style socket */
2549 inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
2550 SCTP_PCB_FLAGS_UNBOUND);
2551 /* Be sure it is NON-BLOCKING IO for UDP */
2552 /* SCTP_SET_SO_NBIO(so); */
2553 } else if (SCTP_SO_TYPE(so) == SOCK_STREAM) {
2554 /* TCP style socket */
2555 inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
2556 SCTP_PCB_FLAGS_UNBOUND);
2557 /* Be sure we have blocking IO by default */
2558 SCTP_CLEAR_SO_NBIO(so);
2561 * unsupported socket type (RAW, etc)- in case we missed it
2564 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
2566 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2567 return (EOPNOTSUPP);
2569 if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) {
2570 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2571 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2572 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) {
2573 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2574 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2575 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) {
2576 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2577 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2579 inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize),
2580 &inp->sctp_hashmark);
2581 if (inp->sctp_tcbhash == NULL) {
2582 SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
2583 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2585 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2588 inp->def_vrf_id = vrf_id;
2590 SCTP_INP_INFO_WLOCK();
2591 SCTP_INP_LOCK_INIT(inp);
2592 INP_LOCK_INIT(&inp->ip_inp.inp, "inp", "sctpinp");
2593 SCTP_INP_READ_INIT(inp);
2594 SCTP_ASOC_CREATE_LOCK_INIT(inp);
2595 /* lock the new ep */
2596 SCTP_INP_WLOCK(inp);
2598 /* add it to the info area */
2599 LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list);
2600 SCTP_INP_INFO_WUNLOCK();
2602 TAILQ_INIT(&inp->read_queue);
2603 LIST_INIT(&inp->sctp_addr_list);
2605 LIST_INIT(&inp->sctp_asoc_list);
2607 #ifdef SCTP_TRACK_FREED_ASOCS
2609 LIST_INIT(&inp->sctp_asoc_free_list);
2611 /* Init the timer structure for signature change */
2612 SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer);
2613 inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE;
2615 /* now init the actual endpoint default data */
2618 /* setup the base timeout information */
2619 m->sctp_timeoutticks[SCTP_TIMER_SEND] = SEC_TO_TICKS(SCTP_SEND_SEC); /* needed ? */
2620 m->sctp_timeoutticks[SCTP_TIMER_INIT] = SEC_TO_TICKS(SCTP_INIT_SEC); /* needed ? */
2621 m->sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default));
2622 m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default));
2623 m->sctp_timeoutticks[SCTP_TIMER_PMTU] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default));
2624 m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default));
2625 m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default));
2626 /* all max/min max are in ms */
2627 m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default);
2628 m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default);
2629 m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default);
2630 m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default);
2631 m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default);
2633 m->max_open_streams_intome = MAX_SCTP_STREAMS;
2635 m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default);
2636 m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default);
2637 m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default);
2638 m->def_net_pf_threshold = SCTP_BASE_SYSCTL(sctp_path_pf_threshold);
2639 m->sctp_sws_sender = SCTP_SWS_SENDER_DEF;
2640 m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF;
2641 m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default);
2642 m->fr_max_burst = SCTP_BASE_SYSCTL(sctp_fr_max_burst_default);
2644 m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module);
2645 m->sctp_default_ss_module = SCTP_BASE_SYSCTL(sctp_default_ss_module);
2646 /* number of streams to pre-open on a association */
2647 m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default);
2649 /* Add adaptation cookie */
2650 m->adaptation_layer_indicator = 0x504C5253;
2652 /* seed random number generator */
2653 m->random_counter = 1;
2654 m->store_at = SCTP_SIGNATURE_SIZE;
2655 SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers));
2656 sctp_fill_random_store(m);
2658 /* Minimum cookie size */
2659 m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) +
2660 sizeof(struct sctp_state_cookie);
2661 m->size_of_a_cookie += SCTP_SIGNATURE_SIZE;
2663 /* Setup the initial secret */
2664 (void)SCTP_GETTIME_TIMEVAL(&time);
2665 m->time_of_secret_change = time.tv_sec;
2667 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
2668 m->secret_key[0][i] = sctp_select_initial_TSN(m);
2670 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
2672 /* How long is a cookie good for ? */
2673 m->def_cookie_life = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default));
2675 * Initialize authentication parameters
2677 m->local_hmacs = sctp_default_supported_hmaclist();
2678 m->local_auth_chunks = sctp_alloc_chunklist();
2679 m->default_dscp = 0;
2681 m->default_flowlabel = 0;
2683 sctp_auth_set_default_chunks(m->local_auth_chunks);
2684 LIST_INIT(&m->shared_keys);
2685 /* add default NULL key as key id 0 */
2686 null_key = sctp_alloc_sharedkey();
2687 sctp_insert_sharedkey(&m->shared_keys, null_key);
2688 SCTP_INP_WUNLOCK(inp);
2689 #ifdef SCTP_LOG_CLOSING
2690 sctp_log_closing(inp, NULL, 12);
2697 sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp,
2698 struct sctp_tcb *stcb)
2700 struct sctp_nets *net;
2701 uint16_t lport, rport;
2702 struct sctppcbhead *head;
2703 struct sctp_laddr *laddr, *oladdr;
2705 atomic_add_int(&stcb->asoc.refcnt, 1);
2706 SCTP_TCB_UNLOCK(stcb);
2707 SCTP_INP_INFO_WLOCK();
2708 SCTP_INP_WLOCK(old_inp);
2709 SCTP_INP_WLOCK(new_inp);
2710 SCTP_TCB_LOCK(stcb);
2711 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2713 new_inp->sctp_ep.time_of_secret_change =
2714 old_inp->sctp_ep.time_of_secret_change;
2715 memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key,
2716 sizeof(old_inp->sctp_ep.secret_key));
2717 new_inp->sctp_ep.current_secret_number =
2718 old_inp->sctp_ep.current_secret_number;
2719 new_inp->sctp_ep.last_secret_number =
2720 old_inp->sctp_ep.last_secret_number;
2721 new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie;
2723 /* make it so new data pours into the new socket */
2724 stcb->sctp_socket = new_inp->sctp_socket;
2725 stcb->sctp_ep = new_inp;
2727 /* Copy the port across */
2728 lport = new_inp->sctp_lport = old_inp->sctp_lport;
2729 rport = stcb->rport;
2730 /* Pull the tcb from the old association */
2731 LIST_REMOVE(stcb, sctp_tcbhash);
2732 LIST_REMOVE(stcb, sctp_tcblist);
2733 if (stcb->asoc.in_asocid_hash) {
2734 LIST_REMOVE(stcb, sctp_tcbasocidhash);
2736 /* Now insert the new_inp into the TCP connected hash */
2737 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
2739 LIST_INSERT_HEAD(head, new_inp, sctp_hash);
2740 /* Its safe to access */
2741 new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
2743 /* Now move the tcb into the endpoint list */
2744 LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist);
2746 * Question, do we even need to worry about the ep-hash since we
2747 * only have one connection? Probably not :> so lets get rid of it
2748 * and not suck up any kernel memory in that.
2750 if (stcb->asoc.in_asocid_hash) {
2751 struct sctpasochead *lhd;
2753 lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id,
2754 new_inp->hashasocidmark)];
2755 LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash);
2757 /* Ok. Let's restart timer. */
2758 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2759 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp,
2763 SCTP_INP_INFO_WUNLOCK();
2764 if (new_inp->sctp_tcbhash != NULL) {
2765 SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark);
2766 new_inp->sctp_tcbhash = NULL;
2768 if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2769 /* Subset bound, so copy in the laddr list from the old_inp */
2770 LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) {
2771 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2772 if (laddr == NULL) {
2774 * Gak, what can we do? This assoc is really
2775 * HOSED. We probably should send an abort
2778 SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n");
2781 SCTP_INCR_LADDR_COUNT();
2782 bzero(laddr, sizeof(*laddr));
2783 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2784 laddr->ifa = oladdr->ifa;
2785 atomic_add_int(&laddr->ifa->refcount, 1);
2786 LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr,
2788 new_inp->laddr_count++;
2792 * Now any running timers need to be adjusted since we really don't
2793 * care if they are running or not just blast in the new_inp into
2797 stcb->asoc.dack_timer.ep = (void *)new_inp;
2798 stcb->asoc.asconf_timer.ep = (void *)new_inp;
2799 stcb->asoc.strreset_timer.ep = (void *)new_inp;
2800 stcb->asoc.shut_guard_timer.ep = (void *)new_inp;
2801 stcb->asoc.autoclose_timer.ep = (void *)new_inp;
2802 stcb->asoc.delayed_event_timer.ep = (void *)new_inp;
2803 stcb->asoc.delete_prim_timer.ep = (void *)new_inp;
2804 /* now what about the nets? */
2805 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2806 net->pmtu_timer.ep = (void *)new_inp;
2807 net->rxt_timer.ep = (void *)new_inp;
2809 SCTP_INP_WUNLOCK(new_inp);
2810 SCTP_INP_WUNLOCK(old_inp);
2816 /* sctp_ifap is used to bypass normal local address validation checks */
2818 sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
2819 struct sctp_ifa *sctp_ifap, struct thread *p)
2821 /* bind a ep to a socket address */
2822 struct sctppcbhead *head;
2823 struct sctp_inpcb *inp, *inp_tmp;
2824 struct inpcb *ip_inp;
2825 int port_reuse_active = 0;
2834 inp = (struct sctp_inpcb *)so->so_pcb;
2835 ip_inp = (struct inpcb *)so->so_pcb;
2838 SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port:%d\n",
2839 ntohs(((struct sockaddr_in *)addr)->sin_port));
2840 SCTPDBG(SCTP_DEBUG_PCB1, "Addr :");
2841 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
2844 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2845 /* already did a bind, subsequent binds NOT allowed ! */
2846 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2851 panic("null proc/thread");
2854 switch (addr->sa_family) {
2858 struct sockaddr_in *sin;
2860 /* IPV6_V6ONLY socket? */
2861 if (SCTP_IPV6_V6ONLY(ip_inp)) {
2862 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2865 if (addr->sa_len != sizeof(*sin)) {
2866 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2869 sin = (struct sockaddr_in *)addr;
2870 lport = sin->sin_port;
2872 * For LOOPBACK the prison_local_ip4() call
2873 * will transmute the ip address to the
2876 if (p && (error = prison_local_ip4(p->td_ucred, &sin->sin_addr)) != 0) {
2877 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2880 if (sin->sin_addr.s_addr != INADDR_ANY) {
2890 * Only for pure IPv6 Address. (No IPv4
2893 struct sockaddr_in6 *sin6;
2895 sin6 = (struct sockaddr_in6 *)addr;
2897 if (addr->sa_len != sizeof(*sin6)) {
2898 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2901 lport = sin6->sin6_port;
2904 * For LOOPBACK the prison_local_ip6() call
2905 * will transmute the ipv6 address to the
2908 if (p && (error = prison_local_ip6(p->td_ucred, &sin6->sin6_addr,
2909 (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
2910 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2913 if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2915 /* KAME hack: embed scopeid */
2916 if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
2917 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2921 /* this must be cleared for ifa_ifwithaddr() */
2922 sin6->sin6_scope_id = 0;
2927 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EAFNOSUPPORT);
2928 return (EAFNOSUPPORT);
2931 SCTP_INP_INFO_WLOCK();
2932 SCTP_INP_WLOCK(inp);
2933 /* Setup a vrf_id to be the default for the non-bind-all case. */
2934 vrf_id = inp->def_vrf_id;
2936 /* increase our count due to the unlock we do */
2937 SCTP_INP_INCR_REF(inp);
2940 * Did the caller specify a port? if so we must see if a ep
2941 * already has this one bound.
2943 /* got to be root to get at low ports */
2944 if (ntohs(lport) < IPPORT_RESERVED) {
2946 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2948 SCTP_INP_DECR_REF(inp);
2949 SCTP_INP_WUNLOCK(inp);
2950 SCTP_INP_INFO_WUNLOCK();
2955 SCTP_INP_DECR_REF(inp);
2956 SCTP_INP_WUNLOCK(inp);
2957 SCTP_INP_INFO_WUNLOCK();
2958 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2961 SCTP_INP_WUNLOCK(inp);
2963 vrf_id = inp->def_vrf_id;
2964 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2965 if (inp_tmp != NULL) {
2967 * lock guy returned and lower count note
2968 * that we are not bound so inp_tmp should
2969 * NEVER be inp. And it is this inp
2970 * (inp_tmp) that gets the reference bump,
2971 * so we must lower it.
2973 SCTP_INP_DECR_REF(inp_tmp);
2975 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2976 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2978 * Ok, must be one-2-one and
2979 * allowing port re-use
2981 port_reuse_active = 1;
2982 goto continue_anyway;
2984 SCTP_INP_DECR_REF(inp);
2985 SCTP_INP_INFO_WUNLOCK();
2986 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2987 return (EADDRINUSE);
2990 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2991 if (inp_tmp != NULL) {
2993 * lock guy returned and lower count note
2994 * that we are not bound so inp_tmp should
2995 * NEVER be inp. And it is this inp
2996 * (inp_tmp) that gets the reference bump,
2997 * so we must lower it.
2999 SCTP_INP_DECR_REF(inp_tmp);
3001 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
3002 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
3004 * Ok, must be one-2-one and
3005 * allowing port re-use
3007 port_reuse_active = 1;
3008 goto continue_anyway;
3010 SCTP_INP_DECR_REF(inp);
3011 SCTP_INP_INFO_WUNLOCK();
3012 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3013 return (EADDRINUSE);
3017 SCTP_INP_WLOCK(inp);
3019 /* verify that no lport is not used by a singleton */
3020 if ((port_reuse_active == 0) &&
3021 (inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))
3023 /* Sorry someone already has this one bound */
3024 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
3025 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
3026 port_reuse_active = 1;
3028 SCTP_INP_DECR_REF(inp);
3029 SCTP_INP_WUNLOCK(inp);
3030 SCTP_INP_INFO_WUNLOCK();
3031 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3032 return (EADDRINUSE);
3037 uint16_t first, last, candidate;
3041 if (ip_inp->inp_flags & INP_HIGHPORT) {
3042 first = MODULE_GLOBAL(ipport_hifirstauto);
3043 last = MODULE_GLOBAL(ipport_hilastauto);
3044 } else if (ip_inp->inp_flags & INP_LOWPORT) {
3046 priv_check(p, PRIV_NETINET_RESERVEDPORT)
3048 SCTP_INP_DECR_REF(inp);
3049 SCTP_INP_WUNLOCK(inp);
3050 SCTP_INP_INFO_WUNLOCK();
3051 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
3054 first = MODULE_GLOBAL(ipport_lowfirstauto);
3055 last = MODULE_GLOBAL(ipport_lowlastauto);
3057 first = MODULE_GLOBAL(ipport_firstauto);
3058 last = MODULE_GLOBAL(ipport_lastauto);
3067 count = last - first + 1; /* number of candidates */
3068 candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count);
3072 if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) {
3077 SCTP_INP_DECR_REF(inp);
3078 SCTP_INP_WUNLOCK(inp);
3079 SCTP_INP_INFO_WUNLOCK();
3080 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3081 return (EADDRINUSE);
3083 if (candidate == last)
3086 candidate = candidate + 1;
3089 lport = htons(candidate);
3091 SCTP_INP_DECR_REF(inp);
3092 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE |
3093 SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
3095 * this really should not happen. The guy did a non-blocking
3096 * bind and then did a close at the same time.
3098 SCTP_INP_WUNLOCK(inp);
3099 SCTP_INP_INFO_WUNLOCK();
3100 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3103 /* ok we look clear to give out this port, so lets setup the binding */
3105 /* binding to all addresses, so just set in the proper flags */
3106 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL;
3107 /* set the automatic addr changes from kernel flag */
3108 if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) {
3109 sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3110 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3112 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3113 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3115 if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) {
3116 sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3118 sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3121 * set the automatic mobility_base from kernel flag (by
3124 if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) {
3125 sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE);
3126 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3128 sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE);
3129 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3132 * set the automatic mobility_fasthandoff from kernel flag
3135 if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) {
3136 sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF);
3137 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3139 sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF);
3140 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3144 * bind specific, make sure flags is off and add a new
3145 * address structure to the sctp_addr_list inside the ep
3148 * We will need to allocate one and insert it at the head. The
3149 * socketopt call can just insert new addresses in there as
3150 * well. It will also have to do the embed scope kame hack
3151 * too (before adding).
3153 struct sctp_ifa *ifa;
3154 struct sockaddr_storage store_sa;
3156 memset(&store_sa, 0, sizeof(store_sa));
3157 switch (addr->sa_family) {
3160 struct sockaddr_in *sin;
3162 sin = (struct sockaddr_in *)&store_sa;
3163 memcpy(sin, addr, sizeof(struct sockaddr_in));
3169 struct sockaddr_in6 *sin6;
3171 sin6 = (struct sockaddr_in6 *)&store_sa;
3172 memcpy(sin6, addr, sizeof(struct sockaddr_in6));
3173 sin6->sin6_port = 0;
3180 * first find the interface with the bound address need to
3181 * zero out the port to find the address! yuck! can't do
3182 * this earlier since need port for sctp_pcb_findep()
3184 if (sctp_ifap != NULL)
3188 * Note for BSD we hit here always other O/S's will
3189 * pass things in via the sctp_ifap argument
3192 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&store_sa,
3193 vrf_id, SCTP_ADDR_NOT_LOCKED);
3196 /* Can't find an interface with that address */
3197 SCTP_INP_WUNLOCK(inp);
3198 SCTP_INP_INFO_WUNLOCK();
3199 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRNOTAVAIL);
3200 return (EADDRNOTAVAIL);
3203 if (addr->sa_family == AF_INET6) {
3204 /* GAK, more FIXME IFA lock? */
3205 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
3206 /* Can't bind a non-existent addr. */
3207 SCTP_INP_WUNLOCK(inp);
3208 SCTP_INP_INFO_WUNLOCK();
3209 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3214 /* we're not bound all */
3215 inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL;
3216 /* allow bindx() to send ASCONF's for binding changes */
3217 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3218 /* clear automatic addr changes from kernel flag */
3219 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3221 /* add this address to the endpoint list */
3222 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0);
3224 SCTP_INP_WUNLOCK(inp);
3225 SCTP_INP_INFO_WUNLOCK();
3230 /* find the bucket */
3231 if (port_reuse_active) {
3232 /* Put it into tcp 1-2-1 hash */
3233 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))];
3234 inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
3236 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))];
3238 /* put it in the bucket */
3239 LIST_INSERT_HEAD(head, inp, sctp_hash);
3240 SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n",
3241 head, ntohs(lport), port_reuse_active);
3242 /* set in the port */
3243 inp->sctp_lport = lport;
3245 /* turn off just the unbound flag */
3246 inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
3247 SCTP_INP_WUNLOCK(inp);
3248 SCTP_INP_INFO_WUNLOCK();
3254 sctp_iterator_inp_being_freed(struct sctp_inpcb *inp)
3256 struct sctp_iterator *it, *nit;
3259 * We enter with the only the ITERATOR_LOCK in place and a write
3260 * lock on the inp_info stuff.
3262 it = sctp_it_ctl.cur_it;
3263 if (it && (it->vn != curvnet)) {
3264 /* Its not looking at our VNET */
3267 if (it && (it->inp == inp)) {
3269 * This is tricky and we hold the iterator lock, but when it
3270 * returns and gets the lock (when we release it) the
3271 * iterator will try to operate on inp. We need to stop that
3272 * from happening. But of course the iterator has a
3273 * reference on the stcb and inp. We can mark it and it will
3276 * If its a single iterator situation, we set the end iterator
3277 * flag. Otherwise we set the iterator to go to the next
3281 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3282 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
3284 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_INP;
3288 * Now go through and remove any single reference to our inp that
3289 * may be still pending on the list
3291 SCTP_IPI_ITERATOR_WQ_LOCK();
3292 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
3293 if (it->vn != curvnet) {
3296 if (it->inp == inp) {
3297 /* This one points to me is it inp specific? */
3298 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3299 /* Remove and free this one */
3300 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
3302 if (it->function_atend != NULL) {
3303 (*it->function_atend) (it->pointer, it->val);
3305 SCTP_FREE(it, SCTP_M_ITER);
3307 it->inp = LIST_NEXT(it->inp, sctp_list);
3309 SCTP_INP_INCR_REF(it->inp);
3313 * When its put in the refcnt is incremented so decr
3316 SCTP_INP_DECR_REF(inp);
3319 SCTP_IPI_ITERATOR_WQ_UNLOCK();
3322 /* release sctp_inpcb unbind the port */
3324 sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
3327 * Here we free a endpoint. We must find it (if it is in the Hash
3328 * table) and remove it from there. Then we must also find it in the
3329 * overall list and remove it from there. After all removals are
3330 * complete then any timer has to be stopped. Then start the actual
3331 * freeing. a) Any local lists. b) Any associations. c) The hash of
3332 * all associations. d) finally the ep itself.
3335 struct sctp_tcb *asoc, *nasoc;
3336 struct sctp_laddr *laddr, *nladdr;
3337 struct inpcb *ip_pcb;
3339 int being_refed = 0;
3340 struct sctp_queued_to_read *sq, *nsq;
3342 sctp_sharedkey_t *shared_key, *nshared_key;
3345 #ifdef SCTP_LOG_CLOSING
3346 sctp_log_closing(inp, NULL, 0);
3348 SCTP_ITERATOR_LOCK();
3349 /* mark any iterators on the list or being processed */
3350 sctp_iterator_inp_being_freed(inp);
3351 SCTP_ITERATOR_UNLOCK();
3352 so = inp->sctp_socket;
3353 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
3354 /* been here before.. eeks.. get out of here */
3355 SCTP_PRINTF("This conflict in free SHOULD not be happening! from %d, imm %d\n", from, immediate);
3356 #ifdef SCTP_LOG_CLOSING
3357 sctp_log_closing(inp, NULL, 1);
3361 SCTP_ASOC_CREATE_LOCK(inp);
3362 SCTP_INP_INFO_WLOCK();
3364 SCTP_INP_WLOCK(inp);
3365 if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
3366 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP;
3367 /* socket is gone, so no more wakeups allowed */
3368 inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE;
3369 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
3370 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
3373 /* First time through we have the socket lock, after that no more. */
3374 sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL,
3375 SCTP_FROM_SCTP_PCB + SCTP_LOC_1);
3378 sctp_m_freem(inp->control);
3379 inp->control = NULL;
3382 sctp_m_freem(inp->pkt);
3386 ip_pcb = &inp->ip_inp.inp; /* we could just cast the main pointer
3387 * here but I will be nice :> (i.e.
3389 if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
3393 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3394 SCTP_TCB_LOCK(asoc);
3395 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3396 /* Skip guys being freed */
3398 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3400 * Special case - we did not start a
3401 * kill timer on the asoc due to it
3402 * was not closed. So go ahead and
3405 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3406 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3408 SCTP_TCB_UNLOCK(asoc);
3411 if (((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_WAIT) ||
3412 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_ECHOED)) &&
3413 (asoc->asoc.total_output_queue_size == 0)) {
3415 * If we have data in queue, we don't want
3416 * to just free since the app may have done,
3417 * send()/close or connect/send/close. And
3418 * it wants the data to get across first.
3420 /* Just abandon things in the front states */
3421 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE,
3422 SCTP_FROM_SCTP_PCB + SCTP_LOC_2) == 0) {
3427 /* Disconnect the socket please */
3428 asoc->sctp_socket = NULL;
3429 asoc->asoc.state |= SCTP_STATE_CLOSED_SOCKET;
3430 if ((asoc->asoc.size_on_reasm_queue > 0) ||
3431 (asoc->asoc.control_pdapi) ||
3432 (asoc->asoc.size_on_all_streams > 0) ||
3433 (so && (so->so_rcv.sb_cc > 0))
3435 /* Left with Data unread */
3436 struct mbuf *op_err;
3438 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3439 0, M_DONTWAIT, 1, MT_DATA);
3441 /* Fill in the user initiated abort */
3442 struct sctp_paramhdr *ph;
3445 SCTP_BUF_LEN(op_err) =
3446 sizeof(struct sctp_paramhdr) + sizeof(uint32_t);
3448 struct sctp_paramhdr *);
3449 ph->param_type = htons(
3450 SCTP_CAUSE_USER_INITIATED_ABT);
3451 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3452 ippp = (uint32_t *) (ph + 1);
3453 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_3);
3455 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_3;
3456 #if defined(SCTP_PANIC_ON_ABORT)
3457 panic("inpcb_free does an abort");
3459 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3460 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3461 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3462 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3463 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3465 if (sctp_free_assoc(inp, asoc,
3466 SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_4) == 0) {
3470 } else if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3471 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3472 (asoc->asoc.stream_queue_cnt == 0)
3474 if (asoc->asoc.locked_on_sending) {
3477 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
3478 (SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
3479 struct sctp_nets *netp;
3481 if (asoc->asoc.alternate) {
3482 netp = asoc->asoc.alternate;
3484 netp = asoc->asoc.primary_destination;
3487 * there is nothing queued to send,
3488 * so I send shutdown
3490 sctp_send_shutdown(asoc, netp);
3491 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3492 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3493 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3495 SCTP_SET_STATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_SENT);
3496 SCTP_CLEAR_SUBSTATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_PENDING);
3497 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, asoc->sctp_ep, asoc,
3499 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3500 asoc->asoc.primary_destination);
3501 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED);
3504 /* mark into shutdown pending */
3505 struct sctp_stream_queue_pending *sp;
3507 asoc->asoc.state |= SCTP_STATE_SHUTDOWN_PENDING;
3508 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3509 asoc->asoc.primary_destination);
3510 if (asoc->asoc.locked_on_sending) {
3511 sp = TAILQ_LAST(&((asoc->asoc.locked_on_sending)->outqueue),
3514 SCTP_PRINTF("Error, sp is NULL, locked on sending is %p strm:%d\n",
3515 asoc->asoc.locked_on_sending,
3516 asoc->asoc.locked_on_sending->stream_no);
3518 if ((sp->length == 0) && (sp->msg_is_complete == 0))
3519 asoc->asoc.state |= SCTP_STATE_PARTIAL_MSG_LEFT;
3522 if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3523 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3524 (asoc->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
3525 struct mbuf *op_err;
3528 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3529 0, M_DONTWAIT, 1, MT_DATA);
3535 struct sctp_paramhdr *ph;
3538 SCTP_BUF_LEN(op_err) =
3539 (sizeof(struct sctp_paramhdr) +
3542 struct sctp_paramhdr *);
3543 ph->param_type = htons(
3544 SCTP_CAUSE_USER_INITIATED_ABT);
3545 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3546 ippp = (uint32_t *) (ph + 1);
3547 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_5);
3549 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_5;
3550 #if defined(SCTP_PANIC_ON_ABORT)
3551 panic("inpcb_free does an abort");
3554 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3555 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3556 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3557 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3558 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3560 if (sctp_free_assoc(inp, asoc,
3561 SCTP_PCBFREE_NOFORCE,
3562 SCTP_FROM_SCTP_PCB + SCTP_LOC_6) == 0) {
3567 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
3571 SCTP_TCB_UNLOCK(asoc);
3573 /* now is there some left in our SHUTDOWN state? */
3575 #ifdef SCTP_LOG_CLOSING
3576 sctp_log_closing(inp, NULL, 2);
3578 inp->sctp_socket = NULL;
3579 SCTP_INP_WUNLOCK(inp);
3580 SCTP_ASOC_CREATE_UNLOCK(inp);
3581 SCTP_INP_INFO_WUNLOCK();
3585 inp->sctp_socket = NULL;
3586 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) !=
3587 SCTP_PCB_FLAGS_UNBOUND) {
3589 * ok, this guy has been bound. It's port is somewhere in
3590 * the SCTP_BASE_INFO(hash table). Remove it!
3592 LIST_REMOVE(inp, sctp_hash);
3593 inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND;
3596 * If there is a timer running to kill us, forget it, since it may
3597 * have a contest on the INP lock.. which would cause us to die ...
3600 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3601 SCTP_TCB_LOCK(asoc);
3602 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3603 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3604 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3605 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3608 SCTP_TCB_UNLOCK(asoc);
3611 /* Free associations that are NOT killing us */
3612 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_COOKIE_WAIT) &&
3613 ((asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) {
3614 struct mbuf *op_err;
3617 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3618 0, M_DONTWAIT, 1, MT_DATA);
3620 /* Fill in the user initiated abort */
3621 struct sctp_paramhdr *ph;
3623 SCTP_BUF_LEN(op_err) = (sizeof(struct sctp_paramhdr) +
3625 ph = mtod(op_err, struct sctp_paramhdr *);
3626 ph->param_type = htons(
3627 SCTP_CAUSE_USER_INITIATED_ABT);
3628 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3629 ippp = (uint32_t *) (ph + 1);
3630 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_7);
3633 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_7;
3634 #if defined(SCTP_PANIC_ON_ABORT)
3635 panic("inpcb_free does an abort");
3637 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3638 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3639 } else if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3641 SCTP_TCB_UNLOCK(asoc);
3644 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3645 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3646 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3648 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_8) == 0) {
3653 /* Ok we have someone out there that will kill us */
3654 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3655 #ifdef SCTP_LOG_CLOSING
3656 sctp_log_closing(inp, NULL, 3);
3658 SCTP_INP_WUNLOCK(inp);
3659 SCTP_ASOC_CREATE_UNLOCK(inp);
3660 SCTP_INP_INFO_WUNLOCK();
3663 if (SCTP_INP_LOCK_CONTENDED(inp))
3665 if (SCTP_INP_READ_CONTENDED(inp))
3667 if (SCTP_ASOC_CREATE_LOCK_CONTENDED(inp))
3670 if ((inp->refcount) ||
3672 (inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) {
3673 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3674 #ifdef SCTP_LOG_CLOSING
3675 sctp_log_closing(inp, NULL, 4);
3677 sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
3678 SCTP_INP_WUNLOCK(inp);
3679 SCTP_ASOC_CREATE_UNLOCK(inp);
3680 SCTP_INP_INFO_WUNLOCK();
3683 inp->sctp_ep.signature_change.type = 0;
3684 inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE;
3686 * Remove it from the list .. last thing we need a lock for.
3688 LIST_REMOVE(inp, sctp_list);
3689 SCTP_INP_WUNLOCK(inp);
3690 SCTP_ASOC_CREATE_UNLOCK(inp);
3691 SCTP_INP_INFO_WUNLOCK();
3693 * Now we release all locks. Since this INP cannot be found anymore
3694 * except possibly by the kill timer that might be running. We call
3695 * the drain function here. It should hit the case were it sees the
3696 * ACTIVE flag cleared and exit out freeing us to proceed and
3697 * destroy everything.
3699 if (from != SCTP_CALLED_FROM_INPKILL_TIMER) {
3700 (void)SCTP_OS_TIMER_STOP_DRAIN(&inp->sctp_ep.signature_change.timer);
3702 /* Probably un-needed */
3703 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3706 #ifdef SCTP_LOG_CLOSING
3707 sctp_log_closing(inp, NULL, 5);
3711 if ((inp->sctp_asocidhash) != NULL) {
3712 SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark);
3713 inp->sctp_asocidhash = NULL;
3715 /* sa_ignore FREED_MEMORY */
3716 TAILQ_FOREACH_SAFE(sq, &inp->read_queue, next, nsq) {
3717 /* Its only abandoned if it had data left */
3719 SCTP_STAT_INCR(sctps_left_abandon);
3721 TAILQ_REMOVE(&inp->read_queue, sq, next);
3722 sctp_free_remote_addr(sq->whoFrom);
3724 so->so_rcv.sb_cc -= sq->length;
3726 sctp_m_freem(sq->data);
3730 * no need to free the net count, since at this point all
3733 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
3734 SCTP_DECR_READQ_COUNT();
3736 /* Now the sctp_pcb things */
3738 * free each asoc if it is not already closed/free. we can't use the
3739 * macro here since le_next will get freed as part of the
3740 * sctp_free_assoc() call.
3745 ipsec_delete_pcbpolicy(ip_pcb);
3748 /* Unlocks not needed since the socket is gone now */
3750 if (ip_pcb->inp_options) {
3751 (void)sctp_m_free(ip_pcb->inp_options);
3752 ip_pcb->inp_options = 0;
3755 if (ip_pcb->inp_vflag & INP_IPV6) {
3756 struct in6pcb *in6p;
3758 in6p = (struct in6pcb *)inp;
3759 ip6_freepcbopts(in6p->in6p_outputopts);
3762 ip_pcb->inp_vflag = 0;
3763 /* free up authentication fields */
3764 if (inp->sctp_ep.local_auth_chunks != NULL)
3765 sctp_free_chunklist(inp->sctp_ep.local_auth_chunks);
3766 if (inp->sctp_ep.local_hmacs != NULL)
3767 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3769 LIST_FOREACH_SAFE(shared_key, &inp->sctp_ep.shared_keys, next, nshared_key) {
3770 LIST_REMOVE(shared_key, next);
3771 sctp_free_sharedkey(shared_key);
3772 /* sa_ignore FREED_MEMORY */
3776 * if we have an address list the following will free the list of
3777 * ifaddr's that are set into this ep. Again macro limitations here,
3778 * since the LIST_FOREACH could be a bad idea.
3780 LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
3781 sctp_remove_laddr(laddr);
3784 #ifdef SCTP_TRACK_FREED_ASOCS
3786 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_free_list, sctp_tcblist, nasoc) {
3787 LIST_REMOVE(asoc, sctp_tcblist);
3788 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), asoc);
3789 SCTP_DECR_ASOC_COUNT();
3791 /* *** END TEMP CODE *** */
3793 /* Now lets see about freeing the EP hash table. */
3794 if (inp->sctp_tcbhash != NULL) {
3795 SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
3796 inp->sctp_tcbhash = NULL;
3798 /* Now we must put the ep memory back into the zone pool */
3799 INP_LOCK_DESTROY(&inp->ip_inp.inp);
3800 SCTP_INP_LOCK_DESTROY(inp);
3801 SCTP_INP_READ_DESTROY(inp);
3802 SCTP_ASOC_CREATE_LOCK_DESTROY(inp);
3803 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
3804 SCTP_DECR_EP_COUNT();
3809 sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
3811 struct sctp_nets *net;
3813 /* locate the address */
3814 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3815 if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr))
3823 sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
3825 struct sctp_ifa *sctp_ifa;
3827 sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED);
3836 * add's a remote endpoint address, done with the INIT/INIT-ACK as well as
3837 * when a ASCONF arrives that adds it. It will also initialize all the cwnd
3841 sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
3842 struct sctp_nets **netp, int set_scope, int from)
3845 * The following is redundant to the same lines in the
3846 * sctp_aloc_assoc() but is needed since others call the add address
3849 struct sctp_nets *net, *netfirst;
3852 SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ",
3854 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr);
3856 netfirst = sctp_findnet(stcb, newaddr);
3859 * Lie and return ok, we don't want to make the association
3860 * go away for this behavior. It will happen in the TCP
3861 * model in a connected socket. It does not reach the hash
3862 * table until after the association is built so it can't be
3863 * found. Mark as reachable, since the initial creation will
3864 * have been cleared and the NOT_IN_ASSOC flag will have
3865 * been added... and we don't want to end up removing it
3868 if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) {
3869 netfirst->dest_state = (SCTP_ADDR_REACHABLE |
3870 SCTP_ADDR_UNCONFIRMED);
3872 netfirst->dest_state = SCTP_ADDR_REACHABLE;
3878 switch (newaddr->sa_family) {
3882 struct sockaddr_in *sin;
3884 sin = (struct sockaddr_in *)newaddr;
3885 if (sin->sin_addr.s_addr == 0) {
3886 /* Invalid address */
3889 /* zero out the bzero area */
3890 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
3892 /* assure len is set */
3893 sin->sin_len = sizeof(struct sockaddr_in);
3895 #ifdef SCTP_DONT_DO_PRIVADDR_SCOPE
3896 stcb->ipv4_local_scope = 1;
3898 if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
3899 stcb->asoc.ipv4_local_scope = 1;
3901 #endif /* SCTP_DONT_DO_PRIVADDR_SCOPE */
3903 /* Validate the address is in scope */
3904 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) &&
3905 (stcb->asoc.ipv4_local_scope == 0)) {
3915 struct sockaddr_in6 *sin6;
3917 sin6 = (struct sockaddr_in6 *)newaddr;
3918 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3919 /* Invalid address */
3922 /* assure len is set */
3923 sin6->sin6_len = sizeof(struct sockaddr_in6);
3925 if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) {
3926 stcb->asoc.loopback_scope = 1;
3927 stcb->asoc.local_scope = 0;
3928 stcb->asoc.ipv4_local_scope = 1;
3929 stcb->asoc.site_scope = 1;
3930 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
3932 * If the new destination is a
3933 * LINK_LOCAL we must have common
3934 * site scope. Don't set the local
3935 * scope since we may not share all
3936 * links, only loopback can do this.
3937 * Links on the local network would
3938 * also be on our private network
3941 stcb->asoc.ipv4_local_scope = 1;
3942 stcb->asoc.site_scope = 1;
3943 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
3945 * If the new destination is
3946 * SITE_LOCAL then we must have site
3949 stcb->asoc.site_scope = 1;
3952 /* Validate the address is in scope */
3953 if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) &&
3954 (stcb->asoc.loopback_scope == 0)) {
3956 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
3957 (stcb->asoc.local_scope == 0)) {
3959 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
3960 (stcb->asoc.site_scope == 0)) {
3968 /* not supported family type */
3971 net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets);
3975 SCTP_INCR_RADDR_COUNT();
3976 bzero(net, sizeof(struct sctp_nets));
3977 (void)SCTP_GETTIME_TIMEVAL(&net->start_time);
3978 memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len);
3979 switch (newaddr->sa_family) {
3982 ((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport;
3987 ((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport;
3993 net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id);
3994 if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) {
3995 stcb->asoc.loopback_scope = 1;
3996 stcb->asoc.ipv4_local_scope = 1;
3997 stcb->asoc.local_scope = 0;
3998 stcb->asoc.site_scope = 1;
4001 net->failure_threshold = stcb->asoc.def_net_failure;
4002 net->pf_threshold = stcb->asoc.def_net_pf_threshold;
4003 if (addr_inscope == 0) {
4004 net->dest_state = (SCTP_ADDR_REACHABLE |
4005 SCTP_ADDR_OUT_OF_SCOPE);
4007 if (from == SCTP_ADDR_IS_CONFIRMED)
4008 /* SCTP_ADDR_IS_CONFIRMED is passed by connect_x */
4009 net->dest_state = SCTP_ADDR_REACHABLE;
4011 net->dest_state = SCTP_ADDR_REACHABLE |
4012 SCTP_ADDR_UNCONFIRMED;
4015 * We set this to 0, the timer code knows that this means its an
4018 net->rto_needed = 1;
4020 net->RTO_measured = 0;
4021 stcb->asoc.numnets++;
4022 *(&net->ref_count) = 1;
4023 net->cwr_window_tsn = net->last_cwr_tsn = stcb->asoc.sending_seq - 1;
4024 if (SCTP_BASE_SYSCTL(sctp_udp_tunneling_for_client_enable)) {
4025 net->port = htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port));
4029 net->dscp = stcb->asoc.default_dscp;
4031 net->flowlabel = stcb->asoc.default_flowlabel;
4033 if (sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
4034 net->dest_state |= SCTP_ADDR_NOHB;
4036 net->dest_state &= ~SCTP_ADDR_NOHB;
4038 net->heart_beat_delay = stcb->asoc.heart_beat_delay;
4039 /* Init the timer structure */
4040 SCTP_OS_TIMER_INIT(&net->rxt_timer.timer);
4041 SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer);
4042 SCTP_OS_TIMER_INIT(&net->hb_timer.timer);
4044 /* Now generate a route for this guy */
4046 /* KAME hack: embed scopeid */
4047 if (newaddr->sa_family == AF_INET6) {
4048 struct sockaddr_in6 *sin6;
4050 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
4051 (void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone));
4052 sin6->sin6_scope_id = 0;
4055 SCTP_RTALLOC((sctp_route_t *) & net->ro, stcb->asoc.vrf_id);
4057 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) {
4058 /* Get source address */
4059 net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep,
4061 (sctp_route_t *) & net->ro,
4065 /* Now get the interface MTU */
4066 if (net->ro._s_addr && net->ro._s_addr->ifn_p) {
4067 net->mtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p);
4071 if (net->mtu == 0) {
4073 net->mtu = SCTP_DEFAULT_MTU;
4077 rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_rt);
4080 * Start things off to match mtu of
4083 SCTP_SET_MTU_OF_ROUTE(&net->ro._l_addr.sa,
4084 net->ro.ro_rt, net->mtu);
4087 * we take the route mtu over the interface,
4088 * since the route may be leading out the
4089 * loopback, or a different interface.
4094 if (from == SCTP_ALLOC_ASOC) {
4095 stcb->asoc.smallest_mtu = net->mtu;
4098 net->mtu = stcb->asoc.smallest_mtu;
4101 if (newaddr->sa_family == AF_INET6) {
4102 struct sockaddr_in6 *sin6;
4104 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
4105 (void)sa6_recoverscope(sin6);
4109 net->mtu -= sizeof(struct udphdr);
4111 if (stcb->asoc.smallest_mtu > net->mtu) {
4112 stcb->asoc.smallest_mtu = net->mtu;
4114 /* JRS - Use the congestion control given in the CC module */
4115 if (stcb->asoc.cc_functions.sctp_set_initial_cc_param != NULL)
4116 (*stcb->asoc.cc_functions.sctp_set_initial_cc_param) (stcb, net);
4119 * CMT: CUC algo - set find_pseudo_cumack to TRUE (1) at beginning
4120 * of assoc (2005/06/27, iyengar@cis.udel.edu)
4122 net->find_pseudo_cumack = 1;
4123 net->find_rtx_pseudo_cumack = 1;
4124 net->src_addr_selected = 0;
4125 /* Choose an initial flowid. */
4126 net->flowid = stcb->asoc.my_vtag ^
4127 ntohs(stcb->rport) ^
4128 ntohs(stcb->sctp_ep->sctp_lport);
4132 netfirst = TAILQ_FIRST(&stcb->asoc.nets);
4133 if (net->ro.ro_rt == NULL) {
4134 /* Since we have no route put it at the back */
4135 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4136 } else if (netfirst == NULL) {
4137 /* We are the first one in the pool. */
4138 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4139 } else if (netfirst->ro.ro_rt == NULL) {
4141 * First one has NO route. Place this one ahead of the first
4144 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4145 } else if (net->ro.ro_rt->rt_ifp != netfirst->ro.ro_rt->rt_ifp) {
4147 * This one has a different interface than the one at the
4148 * top of the list. Place it ahead.
4150 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4153 * Ok we have the same interface as the first one. Move
4154 * forward until we find either a) one with a NULL route...
4155 * insert ahead of that b) one with a different ifp.. insert
4156 * after that. c) end of the list.. insert at the tail.
4158 struct sctp_nets *netlook;
4161 netlook = TAILQ_NEXT(netfirst, sctp_next);
4162 if (netlook == NULL) {
4163 /* End of the list */
4164 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4166 } else if (netlook->ro.ro_rt == NULL) {
4167 /* next one has NO route */
4168 TAILQ_INSERT_BEFORE(netfirst, net, sctp_next);
4170 } else if (netlook->ro.ro_rt->rt_ifp != net->ro.ro_rt->rt_ifp) {
4171 TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook,
4177 } while (netlook != NULL);
4180 /* got to have a primary set */
4181 if (stcb->asoc.primary_destination == 0) {
4182 stcb->asoc.primary_destination = net;
4183 } else if ((stcb->asoc.primary_destination->ro.ro_rt == NULL) &&
4185 ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
4186 /* No route to current primary adopt new primary */
4187 stcb->asoc.primary_destination = net;
4189 /* Validate primary is first */
4190 net = TAILQ_FIRST(&stcb->asoc.nets);
4191 if ((net != stcb->asoc.primary_destination) &&
4192 (stcb->asoc.primary_destination)) {
4194 * first one on the list is NOT the primary sctp_cmpaddr()
4195 * is much more efficient if the primary is the first on the
4198 TAILQ_REMOVE(&stcb->asoc.nets,
4199 stcb->asoc.primary_destination, sctp_next);
4200 TAILQ_INSERT_HEAD(&stcb->asoc.nets,
4201 stcb->asoc.primary_destination, sctp_next);
4211 sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
4214 struct sctpasochead *head;
4215 struct sctp_tcb *lstcb;
4217 SCTP_INP_WLOCK(inp);
4219 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
4221 SCTP_INP_WUNLOCK(inp);
4225 * We don't allow assoc id to be one of SCTP_FUTURE_ASSOC,
4226 * SCTP_CURRENT_ASSOC and SCTP_ALL_ASSOC.
4228 if (inp->sctp_associd_counter <= SCTP_ALL_ASSOC) {
4229 inp->sctp_associd_counter = SCTP_ALL_ASSOC + 1;
4231 id = inp->sctp_associd_counter;
4232 inp->sctp_associd_counter++;
4233 lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t) id, 0);
4237 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
4238 LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash);
4239 stcb->asoc.in_asocid_hash = 1;
4240 SCTP_INP_WUNLOCK(inp);
4245 * allocate an association and add it to the endpoint. The caller must be
4246 * careful to add all additional addresses once they are know right away or
4247 * else the assoc will be may experience a blackout scenario.
4250 sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
4251 int *error, uint32_t override_tag, uint32_t vrf_id,
4255 /* note the p argument is only valid in unbound sockets */
4257 struct sctp_tcb *stcb;
4258 struct sctp_association *asoc;
4259 struct sctpasochead *head;
4264 * Assumption made here: Caller has done a
4265 * sctp_findassociation_ep_addr(ep, addr's); to make sure the
4266 * address does not exist already.
4268 if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) {
4269 /* Hit max assoc, sorry no more */
4270 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4274 if (firstaddr == NULL) {
4275 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4279 SCTP_INP_RLOCK(inp);
4280 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
4281 ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) ||
4282 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4284 * If its in the TCP pool, its NOT allowed to create an
4285 * association. The parent listener needs to call
4286 * sctp_aloc_assoc.. or the one-2-many socket. If a peeled
4287 * off, or connected one does this.. its an error.
4289 SCTP_INP_RUNLOCK(inp);
4290 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4294 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
4295 (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)) {
4296 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) ||
4297 (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED)) {
4298 SCTP_INP_RUNLOCK(inp);
4299 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4304 SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:");
4307 SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr);
4308 switch (firstaddr->sa_family) {
4311 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4312 ntohs(((struct sockaddr_in *)firstaddr)->sin_port));
4317 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4318 ntohs(((struct sockaddr_in6 *)firstaddr)->sin6_port));
4325 SCTPDBG(SCTP_DEBUG_PCB3, "None\n");
4327 #endif /* SCTP_DEBUG */
4328 switch (firstaddr->sa_family) {
4332 struct sockaddr_in *sin;
4334 sin = (struct sockaddr_in *)firstaddr;
4335 if ((sin->sin_port == 0) || (sin->sin_addr.s_addr == 0)) {
4336 /* Invalid address */
4337 SCTP_INP_RUNLOCK(inp);
4338 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4342 rport = sin->sin_port;
4349 struct sockaddr_in6 *sin6;
4351 sin6 = (struct sockaddr_in6 *)firstaddr;
4352 if ((sin6->sin6_port == 0) ||
4353 (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))) {
4354 /* Invalid address */
4355 SCTP_INP_RUNLOCK(inp);
4356 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4360 rport = sin6->sin6_port;
4365 /* not supported family type */
4366 SCTP_INP_RUNLOCK(inp);
4367 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4371 SCTP_INP_RUNLOCK(inp);
4372 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4374 * If you have not performed a bind, then we need to do the
4375 * ephemeral bind for you.
4377 if ((err = sctp_inpcb_bind(inp->sctp_socket,
4378 (struct sockaddr *)NULL,
4379 (struct sctp_ifa *)NULL,
4382 /* bind error, probably perm */
4387 stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb);
4389 /* out of memory? */
4390 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
4394 SCTP_INCR_ASOC_COUNT();
4396 bzero(stcb, sizeof(*stcb));
4399 asoc->assoc_id = sctp_aloc_a_assoc_id(inp, stcb);
4400 SCTP_TCB_LOCK_INIT(stcb);
4401 SCTP_TCB_SEND_LOCK_INIT(stcb);
4402 stcb->rport = rport;
4403 /* setup back pointer's */
4404 stcb->sctp_ep = inp;
4405 stcb->sctp_socket = inp->sctp_socket;
4406 if ((err = sctp_init_asoc(inp, stcb, override_tag, vrf_id))) {
4408 SCTP_TCB_LOCK_DESTROY(stcb);
4409 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4410 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4411 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4412 SCTP_DECR_ASOC_COUNT();
4417 SCTP_INP_INFO_WLOCK();
4418 SCTP_INP_WLOCK(inp);
4419 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
4420 /* inpcb freed while alloc going on */
4421 SCTP_TCB_LOCK_DESTROY(stcb);
4422 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4423 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4424 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4425 SCTP_INP_WUNLOCK(inp);
4426 SCTP_INP_INFO_WUNLOCK();
4427 SCTP_DECR_ASOC_COUNT();
4428 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4432 SCTP_TCB_LOCK(stcb);
4434 /* now that my_vtag is set, add it to the hash */
4435 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))];
4436 /* put it in the bucket in the vtag hash of assoc's for the system */
4437 LIST_INSERT_HEAD(head, stcb, sctp_asocs);
4438 SCTP_INP_INFO_WUNLOCK();
4440 if ((err = sctp_add_remote_addr(stcb, firstaddr, NULL, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC))) {
4441 /* failure.. memory error? */
4442 if (asoc->strmout) {
4443 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4444 asoc->strmout = NULL;
4446 if (asoc->mapping_array) {
4447 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4448 asoc->mapping_array = NULL;
4450 if (asoc->nr_mapping_array) {
4451 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4452 asoc->nr_mapping_array = NULL;
4454 SCTP_DECR_ASOC_COUNT();
4455 SCTP_TCB_LOCK_DESTROY(stcb);
4456 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4457 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4458 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4459 SCTP_INP_WUNLOCK(inp);
4460 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4464 /* Init all the timers */
4465 SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer);
4466 SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer);
4467 SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer);
4468 SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer);
4469 SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer);
4470 SCTP_OS_TIMER_INIT(&asoc->delayed_event_timer.timer);
4471 SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer);
4473 LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist);
4474 /* now file the port under the hash as well */
4475 if (inp->sctp_tcbhash != NULL) {
4476 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport,
4477 inp->sctp_hashmark)];
4478 LIST_INSERT_HEAD(head, stcb, sctp_tcbhash);
4480 SCTP_INP_WUNLOCK(inp);
4481 SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", stcb);
4487 sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
4489 struct sctp_association *asoc;
4493 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4494 if (net == asoc->primary_destination) {
4496 struct sctp_nets *lnet;
4498 lnet = TAILQ_FIRST(&asoc->nets);
4500 * Mobility adaptation Ideally, if deleted destination is
4501 * the primary, it becomes a fast retransmission trigger by
4502 * the subsequent SET PRIMARY. (by micchie)
4504 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
4505 SCTP_MOBILITY_BASE) ||
4506 sctp_is_mobility_feature_on(stcb->sctp_ep,
4507 SCTP_MOBILITY_FASTHANDOFF)) {
4508 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n");
4509 if (asoc->deleted_primary != NULL) {
4510 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n");
4513 asoc->deleted_primary = net;
4514 atomic_add_int(&net->ref_count, 1);
4515 memset(&net->lastsa, 0, sizeof(net->lastsa));
4516 memset(&net->lastsv, 0, sizeof(net->lastsv));
4517 sctp_mobility_feature_on(stcb->sctp_ep,
4518 SCTP_MOBILITY_PRIM_DELETED);
4519 sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED,
4520 stcb->sctp_ep, stcb, NULL);
4523 /* Try to find a confirmed primary */
4524 asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0);
4526 if (net == asoc->last_data_chunk_from) {
4528 asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets);
4530 if (net == asoc->last_control_chunk_from) {
4532 asoc->last_control_chunk_from = NULL;
4534 if (net == stcb->asoc.alternate) {
4535 sctp_free_remote_addr(stcb->asoc.alternate);
4536 stcb->asoc.alternate = NULL;
4538 sctp_free_remote_addr(net);
4542 * remove a remote endpoint address from an association, it will fail if the
4543 * address does not exist.
4546 sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
4549 * Here we need to remove a remote address. This is quite simple, we
4550 * first find it in the list of address for the association
4551 * (tasoc->asoc.nets) and then if it is there, we do a LIST_REMOVE
4552 * on that item. Note we do not allow it to be removed if there are
4553 * no other addresses.
4555 struct sctp_association *asoc;
4556 struct sctp_nets *net, *nnet;
4560 /* locate the address */
4561 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
4562 if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) {
4565 if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr,
4567 /* we found the guy */
4568 if (asoc->numnets < 2) {
4569 /* Must have at LEAST two remote addresses */
4572 sctp_remove_net(stcb, net);
4582 sctp_delete_from_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4584 struct sctpvtaghead *chain;
4585 struct sctp_tagblock *twait_block;
4589 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4590 if (!LIST_EMPTY(chain)) {
4591 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4592 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4593 if ((twait_block->vtag_block[i].v_tag == tag) &&
4594 (twait_block->vtag_block[i].lport == lport) &&
4595 (twait_block->vtag_block[i].rport == rport)) {
4596 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4597 twait_block->vtag_block[i].v_tag = 0;
4598 twait_block->vtag_block[i].lport = 0;
4599 twait_block->vtag_block[i].rport = 0;
4611 sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4613 struct sctpvtaghead *chain;
4614 struct sctp_tagblock *twait_block;
4618 SCTP_INP_INFO_WLOCK();
4619 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4620 if (!LIST_EMPTY(chain)) {
4621 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4622 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4623 if ((twait_block->vtag_block[i].v_tag == tag) &&
4624 (twait_block->vtag_block[i].lport == lport) &&
4625 (twait_block->vtag_block[i].rport == rport)) {
4634 SCTP_INP_INFO_WUNLOCK();
4640 sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport)
4642 struct sctpvtaghead *chain;
4643 struct sctp_tagblock *twait_block;
4651 (void)SCTP_GETTIME_TIMEVAL(&now);
4652 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4654 if (!LIST_EMPTY(chain)) {
4655 /* Block(s) present, lets find space, and expire on the fly */
4656 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4657 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4658 if ((twait_block->vtag_block[i].v_tag == 0) &&
4660 twait_block->vtag_block[i].tv_sec_at_expire =
4662 twait_block->vtag_block[i].v_tag = tag;
4663 twait_block->vtag_block[i].lport = lport;
4664 twait_block->vtag_block[i].rport = rport;
4666 } else if ((twait_block->vtag_block[i].v_tag) &&
4667 ((long)twait_block->vtag_block[i].tv_sec_at_expire < now.tv_sec)) {
4668 /* Audit expires this guy */
4669 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4670 twait_block->vtag_block[i].v_tag = 0;
4671 twait_block->vtag_block[i].lport = 0;
4672 twait_block->vtag_block[i].rport = 0;
4674 /* Reuse it for my new tag */
4675 twait_block->vtag_block[i].tv_sec_at_expire = now.tv_sec + time;
4676 twait_block->vtag_block[i].v_tag = tag;
4677 twait_block->vtag_block[i].lport = lport;
4678 twait_block->vtag_block[i].rport = rport;
4685 * We only do up to the block where we can
4686 * place our tag for audits
4692 /* Need to add a new block to chain */
4694 SCTP_MALLOC(twait_block, struct sctp_tagblock *,
4695 sizeof(struct sctp_tagblock), SCTP_M_TIMW);
4696 if (twait_block == NULL) {
4698 panic("Can not alloc tagblock");
4702 memset(twait_block, 0, sizeof(struct sctp_tagblock));
4703 LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock);
4704 twait_block->vtag_block[0].tv_sec_at_expire = now.tv_sec + time;
4705 twait_block->vtag_block[0].v_tag = tag;
4706 twait_block->vtag_block[0].lport = lport;
4707 twait_block->vtag_block[0].rport = rport;
4714 * Free the association after un-hashing the remote port. This
4715 * function ALWAYS returns holding NO LOCK on the stcb. It DOES
4716 * expect that the input to this function IS a locked TCB.
4717 * It will return 0, if it did NOT destroy the association (instead
4718 * it unlocks it. It will return NON-zero if it either destroyed the
4719 * association OR the association is already destroyed.
4722 sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
4725 struct sctp_association *asoc;
4726 struct sctp_nets *net, *nnet;
4727 struct sctp_laddr *laddr, *naddr;
4728 struct sctp_tmit_chunk *chk, *nchk;
4729 struct sctp_asconf_addr *aparam, *naparam;
4730 struct sctp_asconf_ack *aack, *naack;
4731 struct sctp_stream_reset_list *strrst, *nstrrst;
4732 struct sctp_queued_to_read *sq, *nsq;
4733 struct sctp_stream_queue_pending *sp, *nsp;
4734 sctp_sharedkey_t *shared_key, *nshared_key;
4737 /* first, lets purge the entry from the hash table. */
4739 #ifdef SCTP_LOG_CLOSING
4740 sctp_log_closing(inp, stcb, 6);
4742 if (stcb->asoc.state == 0) {
4743 #ifdef SCTP_LOG_CLOSING
4744 sctp_log_closing(inp, NULL, 7);
4746 /* there is no asoc, really TSNH :-0 */
4749 if (stcb->asoc.alternate) {
4750 sctp_free_remote_addr(stcb->asoc.alternate);
4751 stcb->asoc.alternate = NULL;
4754 if (stcb->freed_from_where == 0) {
4755 /* Only record the first place free happened from */
4756 stcb->freed_from_where = from_location;
4761 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4762 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4763 /* nothing around */
4766 so = inp->sctp_socket;
4769 * We used timer based freeing if a reader or writer is in the way.
4770 * So we first check if we are actually being called from a timer,
4771 * if so we abort early if a reader or writer is still in the way.
4773 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
4774 (from_inpcbfree == SCTP_NORMAL_PROC)) {
4776 * is it the timer driving us? if so are the reader/writers
4779 if (stcb->asoc.refcnt) {
4780 /* nope, reader or writer in the way */
4781 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4782 /* no asoc destroyed */
4783 SCTP_TCB_UNLOCK(stcb);
4784 #ifdef SCTP_LOG_CLOSING
4785 sctp_log_closing(inp, stcb, 8);
4790 /* now clean up any other timers */
4791 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4792 asoc->dack_timer.self = NULL;
4793 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4795 * For stream reset we don't blast this unless
4796 * it is a str-reset timer, it might be the
4797 * free-asoc timer which we DON'T want to
4800 if (asoc->strreset_timer.type == SCTP_TIMER_TYPE_STRRESET)
4801 asoc->strreset_timer.self = NULL;
4802 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4803 asoc->asconf_timer.self = NULL;
4804 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4805 asoc->autoclose_timer.self = NULL;
4806 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4807 asoc->shut_guard_timer.self = NULL;
4808 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4809 asoc->delayed_event_timer.self = NULL;
4810 /* Mobility adaptation */
4811 (void)SCTP_OS_TIMER_STOP(&asoc->delete_prim_timer.timer);
4812 asoc->delete_prim_timer.self = NULL;
4813 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4814 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4815 net->rxt_timer.self = NULL;
4816 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4817 net->pmtu_timer.self = NULL;
4818 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4819 net->hb_timer.self = NULL;
4821 /* Now the read queue needs to be cleaned up (only once) */
4822 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) {
4823 stcb->asoc.state |= SCTP_STATE_ABOUT_TO_BE_FREED;
4824 SCTP_INP_READ_LOCK(inp);
4825 TAILQ_FOREACH(sq, &inp->read_queue, next) {
4826 if (sq->stcb == stcb) {
4827 sq->do_not_ref_stcb = 1;
4828 sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
4830 * If there is no end, there never will be
4833 if (sq->end_added == 0) {
4834 /* Held for PD-API clear that. */
4835 sq->pdapi_aborted = 1;
4836 sq->held_length = 0;
4837 if (sctp_stcb_is_feature_on(inp, stcb, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) {
4839 * Need to add a PD-API
4840 * aborted indication.
4841 * Setting the control_pdapi
4842 * assures that it will be
4843 * added right after this
4848 stcb->asoc.control_pdapi = sq;
4849 strseq = (sq->sinfo_stream << 16) | sq->sinfo_ssn;
4850 sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION,
4852 SCTP_PARTIAL_DELIVERY_ABORTED,
4855 stcb->asoc.control_pdapi = NULL;
4858 /* Add an end to wake them */
4862 SCTP_INP_READ_UNLOCK(inp);
4863 if (stcb->block_entry) {
4864 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET);
4865 stcb->block_entry->error = ECONNRESET;
4866 stcb->block_entry = NULL;
4869 if ((stcb->asoc.refcnt) || (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE)) {
4871 * Someone holds a reference OR the socket is unaccepted
4874 if ((stcb->asoc.refcnt) ||
4875 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4876 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4877 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4878 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4880 SCTP_TCB_UNLOCK(stcb);
4881 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4882 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4883 /* nothing around */
4886 /* Wake any reader/writers */
4887 sctp_sorwakeup(inp, so);
4888 sctp_sowwakeup(inp, so);
4890 #ifdef SCTP_LOG_CLOSING
4891 sctp_log_closing(inp, stcb, 9);
4893 /* no asoc destroyed */
4896 #ifdef SCTP_LOG_CLOSING
4897 sctp_log_closing(inp, stcb, 10);
4900 * When I reach here, no others want to kill the assoc yet.. and I
4901 * own the lock. Now its possible an abort comes in when I do the
4902 * lock exchange below to grab all the locks to do the final take
4903 * out. to prevent this we increment the count, which will start a
4904 * timer and blow out above thus assuring us that we hold exclusive
4905 * killing of the asoc. Note that after getting back the TCB lock we
4906 * will go ahead and increment the counter back up and stop any
4907 * timer a passing stranger may have started :-S
4909 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4910 atomic_add_int(&stcb->asoc.refcnt, 1);
4912 SCTP_TCB_UNLOCK(stcb);
4913 SCTP_INP_INFO_WLOCK();
4914 SCTP_INP_WLOCK(inp);
4915 SCTP_TCB_LOCK(stcb);
4917 /* Double check the GONE flag */
4918 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4919 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4920 /* nothing around */
4923 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
4924 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4926 * For TCP type we need special handling when we are
4927 * connected. We also include the peel'ed off ones to.
4929 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4930 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED;
4931 inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED;
4934 if (so->so_rcv.sb_cc == 0) {
4935 so->so_state &= ~(SS_ISCONNECTING |
4936 SS_ISDISCONNECTING |
4940 socantrcvmore_locked(so);
4941 sctp_sowwakeup(inp, so);
4942 sctp_sorwakeup(inp, so);
4948 * Make it invalid too, that way if its about to run it will abort
4951 /* re-increment the lock */
4952 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4953 atomic_add_int(&stcb->asoc.refcnt, -1);
4955 if (stcb->asoc.refcnt) {
4956 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4957 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4958 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4959 SCTP_INP_INFO_WUNLOCK();
4960 SCTP_INP_WUNLOCK(inp);
4962 SCTP_TCB_UNLOCK(stcb);
4966 if (inp->sctp_tcbhash) {
4967 LIST_REMOVE(stcb, sctp_tcbhash);
4969 if (stcb->asoc.in_asocid_hash) {
4970 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4972 /* Now lets remove it from the list of ALL associations in the EP */
4973 LIST_REMOVE(stcb, sctp_tcblist);
4974 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4975 SCTP_INP_INCR_REF(inp);
4976 SCTP_INP_WUNLOCK(inp);
4978 /* pull from vtag hash */
4979 LIST_REMOVE(stcb, sctp_asocs);
4980 sctp_add_vtag_to_timewait(asoc->my_vtag, SCTP_BASE_SYSCTL(sctp_vtag_time_wait),
4981 inp->sctp_lport, stcb->rport);
4984 * Now restop the timers to be sure this is paranoia at is finest!
4986 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4987 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4988 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4989 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4990 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4991 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4992 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4993 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4994 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4995 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4996 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4999 asoc->strreset_timer.type = SCTP_TIMER_TYPE_NONE;
5001 * The chunk lists and such SHOULD be empty but we check them just
5004 /* anything on the wheel needs to be removed */
5005 for (i = 0; i < asoc->streamoutcnt; i++) {
5006 struct sctp_stream_out *outs;
5008 outs = &asoc->strmout[i];
5009 /* now clean up any chunks here */
5010 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
5011 TAILQ_REMOVE(&outs->outqueue, sp, next);
5014 /* Still an open socket - report */
5015 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
5016 SCTP_NOTIFY_DATAGRAM_UNSENT,
5017 (void *)sp, SCTP_SO_LOCKED);
5020 sctp_m_freem(sp->data);
5022 sp->tail_mbuf = NULL;
5026 sctp_free_remote_addr(sp->net);
5029 sctp_free_spbufspace(stcb, asoc, sp);
5030 if (sp->holds_key_ref)
5031 sctp_auth_key_release(stcb, sp->auth_keyid, SCTP_SO_LOCKED);
5032 /* Free the zone stuff */
5033 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_strmoq), sp);
5034 SCTP_DECR_STRMOQ_COUNT();
5035 /* sa_ignore FREED_MEMORY */
5038 /* sa_ignore FREED_MEMORY */
5039 TAILQ_FOREACH_SAFE(strrst, &asoc->resetHead, next_resp, nstrrst) {
5040 TAILQ_REMOVE(&asoc->resetHead, strrst, next_resp);
5041 SCTP_FREE(strrst, SCTP_M_STRESET);
5043 TAILQ_FOREACH_SAFE(sq, &asoc->pending_reply_queue, next, nsq) {
5044 TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
5046 sctp_m_freem(sq->data);
5049 sctp_free_remote_addr(sq->whoFrom);
5052 /* Free the ctl entry */
5053 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
5054 SCTP_DECR_READQ_COUNT();
5055 /* sa_ignore FREED_MEMORY */
5057 TAILQ_FOREACH_SAFE(chk, &asoc->free_chunks, sctp_next, nchk) {
5058 TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next);
5060 sctp_m_freem(chk->data);
5063 if (chk->holds_key_ref)
5064 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5065 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5066 SCTP_DECR_CHK_COUNT();
5067 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1);
5068 asoc->free_chunk_cnt--;
5069 /* sa_ignore FREED_MEMORY */
5071 /* pending send queue SHOULD be empty */
5072 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
5073 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
5076 /* Still a socket? */
5077 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb,
5078 SCTP_NOTIFY_DATAGRAM_UNSENT, chk, SCTP_SO_LOCKED);
5081 sctp_m_freem(chk->data);
5085 if (chk->holds_key_ref)
5086 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5088 sctp_free_remote_addr(chk->whoTo);
5091 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5092 SCTP_DECR_CHK_COUNT();
5093 /* sa_ignore FREED_MEMORY */
5095 /* sent queue SHOULD be empty */
5096 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
5097 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
5100 /* Still a socket? */
5101 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb,
5102 SCTP_NOTIFY_DATAGRAM_SENT, chk, SCTP_SO_LOCKED);
5105 sctp_m_freem(chk->data);
5109 if (chk->holds_key_ref)
5110 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5111 sctp_free_remote_addr(chk->whoTo);
5112 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5113 SCTP_DECR_CHK_COUNT();
5114 /* sa_ignore FREED_MEMORY */
5116 /* control queue MAY not be empty */
5117 TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) {
5118 TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next);
5120 sctp_m_freem(chk->data);
5123 if (chk->holds_key_ref)
5124 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5125 sctp_free_remote_addr(chk->whoTo);
5126 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5127 SCTP_DECR_CHK_COUNT();
5128 /* sa_ignore FREED_MEMORY */
5130 /* ASCONF queue MAY not be empty */
5131 TAILQ_FOREACH_SAFE(chk, &asoc->asconf_send_queue, sctp_next, nchk) {
5132 TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next);
5134 sctp_m_freem(chk->data);
5137 if (chk->holds_key_ref)
5138 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5139 sctp_free_remote_addr(chk->whoTo);
5140 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5141 SCTP_DECR_CHK_COUNT();
5142 /* sa_ignore FREED_MEMORY */
5144 TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) {
5145 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
5147 sctp_m_freem(chk->data);
5150 if (chk->holds_key_ref)
5151 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5152 sctp_free_remote_addr(chk->whoTo);
5153 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5154 SCTP_DECR_CHK_COUNT();
5155 /* sa_ignore FREED_MEMORY */
5158 if (asoc->mapping_array) {
5159 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
5160 asoc->mapping_array = NULL;
5162 if (asoc->nr_mapping_array) {
5163 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
5164 asoc->nr_mapping_array = NULL;
5166 /* the stream outs */
5167 if (asoc->strmout) {
5168 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
5169 asoc->strmout = NULL;
5171 asoc->strm_realoutsize = asoc->streamoutcnt = 0;
5173 struct sctp_queued_to_read *ctl, *nctl;
5175 for (i = 0; i < asoc->streamincnt; i++) {
5176 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[i].inqueue, next, nctl) {
5177 TAILQ_REMOVE(&asoc->strmin[i].inqueue, ctl, next);
5178 sctp_free_remote_addr(ctl->whoFrom);
5180 sctp_m_freem(ctl->data);
5184 * We don't free the address here since all
5185 * the net's were freed above.
5187 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
5188 SCTP_DECR_READQ_COUNT();
5191 SCTP_FREE(asoc->strmin, SCTP_M_STRMI);
5192 asoc->strmin = NULL;
5194 asoc->streamincnt = 0;
5195 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
5197 if (SCTP_BASE_INFO(ipi_count_raddr) == 0) {
5198 panic("no net's left alloc'ed, or list points to itself");
5201 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
5202 sctp_free_remote_addr(net);
5204 LIST_FOREACH_SAFE(laddr, &asoc->sctp_restricted_addrs, sctp_nxt_addr, naddr) {
5205 /* sa_ignore FREED_MEMORY */
5206 sctp_remove_laddr(laddr);
5209 /* pending asconf (address) parameters */
5210 TAILQ_FOREACH_SAFE(aparam, &asoc->asconf_queue, next, naparam) {
5211 /* sa_ignore FREED_MEMORY */
5212 TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
5213 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
5215 TAILQ_FOREACH_SAFE(aack, &asoc->asconf_ack_sent, next, naack) {
5216 /* sa_ignore FREED_MEMORY */
5217 TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
5218 if (aack->data != NULL) {
5219 sctp_m_freem(aack->data);
5221 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
5223 /* clean up auth stuff */
5224 if (asoc->local_hmacs)
5225 sctp_free_hmaclist(asoc->local_hmacs);
5226 if (asoc->peer_hmacs)
5227 sctp_free_hmaclist(asoc->peer_hmacs);
5229 if (asoc->local_auth_chunks)
5230 sctp_free_chunklist(asoc->local_auth_chunks);
5231 if (asoc->peer_auth_chunks)
5232 sctp_free_chunklist(asoc->peer_auth_chunks);
5234 sctp_free_authinfo(&asoc->authinfo);
5236 LIST_FOREACH_SAFE(shared_key, &asoc->shared_keys, next, nshared_key) {
5237 LIST_REMOVE(shared_key, next);
5238 sctp_free_sharedkey(shared_key);
5239 /* sa_ignore FREED_MEMORY */
5242 /* Insert new items here :> */
5244 /* Get rid of LOCK */
5245 SCTP_TCB_LOCK_DESTROY(stcb);
5246 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
5247 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5248 SCTP_INP_INFO_WUNLOCK();
5249 SCTP_INP_RLOCK(inp);
5251 #ifdef SCTP_TRACK_FREED_ASOCS
5252 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5253 /* now clean up the tasoc itself */
5254 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5255 SCTP_DECR_ASOC_COUNT();
5257 LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist);
5260 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5261 SCTP_DECR_ASOC_COUNT();
5263 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5264 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5266 * If its NOT the inp_free calling us AND sctp_close
5267 * as been called, we call back...
5269 SCTP_INP_RUNLOCK(inp);
5271 * This will start the kill timer (if we are the
5272 * last one) since we hold an increment yet. But
5273 * this is the only safe way to do this since
5274 * otherwise if the socket closes at the same time
5275 * we are here we might collide in the cleanup.
5277 sctp_inpcb_free(inp,
5278 SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
5279 SCTP_CALLED_DIRECTLY_NOCMPSET);
5280 SCTP_INP_DECR_REF(inp);
5283 /* The socket is still open. */
5284 SCTP_INP_DECR_REF(inp);
5287 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5288 SCTP_INP_RUNLOCK(inp);
5291 /* destroyed the asoc */
5292 #ifdef SCTP_LOG_CLOSING
5293 sctp_log_closing(inp, NULL, 11);
5301 * determine if a destination is "reachable" based upon the addresses bound
5302 * to the current endpoint (e.g. only v4 or v6 currently bound)
5305 * FIX: if we allow assoc-level bindx(), then this needs to be fixed to use
5306 * assoc level v4/v6 flags, as the assoc *may* not have the same address
5307 * types bound as its endpoint
5310 sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
5312 struct sctp_inpcb *inp;
5316 * No locks here, the TCB, in all cases is already locked and an
5317 * assoc is up. There is either a INP lock by the caller applied (in
5318 * asconf case when deleting an address) or NOT in the HB case,
5319 * however if HB then the INP increment is up and the INP will not
5320 * be removed (on top of the fact that we have a TCB lock). So we
5321 * only want to read the sctp_flags, which is either bound-all or
5322 * not.. no protection needed since once an assoc is up you can't be
5323 * changing your binding.
5325 inp = stcb->sctp_ep;
5326 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5327 /* if bound all, destination is not restricted */
5329 * RRS: Question during lock work: Is this correct? If you
5330 * are bound-all you still might need to obey the V4--V6
5331 * flags??? IMO this bound-all stuff needs to be removed!
5335 /* NOTE: all "scope" checks are done when local addresses are added */
5336 switch (destaddr->sa_family) {
5338 answer = inp->ip_inp.inp.inp_vflag & INP_IPV6;
5341 answer = inp->ip_inp.inp.inp_vflag & INP_IPV4;
5344 /* invalid family, so it's unreachable */
5352 * update the inp_vflags on an endpoint
5355 sctp_update_ep_vflag(struct sctp_inpcb *inp)
5357 struct sctp_laddr *laddr;
5359 /* first clear the flag */
5360 inp->ip_inp.inp.inp_vflag = 0;
5361 /* set the flag based on addresses on the ep list */
5362 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5363 if (laddr->ifa == NULL) {
5364 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
5368 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
5371 switch (laddr->ifa->address.sa.sa_family) {
5374 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5379 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5389 * Add the address to the endpoint local address list There is nothing to be
5390 * done if we are bound to all addresses
5393 sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
5395 struct sctp_laddr *laddr;
5400 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5401 /* You are already bound to all. You have it already */
5405 if (ifa->address.sa.sa_family == AF_INET6) {
5406 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5407 /* Can't bind a non-useable addr. */
5412 /* first, is it already present? */
5413 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5414 if (laddr->ifa == ifa) {
5421 /* Not in the ep list */
5422 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action);
5426 /* update inp_vflag flags */
5427 switch (ifa->address.sa.sa_family) {
5430 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5435 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5447 * select a new (hopefully reachable) destination net (should only be used
5448 * when we deleted an ep addr that is the only usable source address to reach
5449 * the destination net)
5452 sctp_select_primary_destination(struct sctp_tcb *stcb)
5454 struct sctp_nets *net;
5456 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5457 /* for now, we'll just pick the first reachable one we find */
5458 if (net->dest_state & SCTP_ADDR_UNCONFIRMED)
5460 if (sctp_destination_is_reachable(stcb,
5461 (struct sockaddr *)&net->ro._l_addr)) {
5462 /* found a reachable destination */
5463 stcb->asoc.primary_destination = net;
5466 /* I can't there from here! ...we're gonna die shortly... */
5471 * Delete the address from the endpoint local address list There is nothing
5472 * to be done if we are bound to all addresses
5475 sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa)
5477 struct sctp_laddr *laddr;
5481 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5482 /* You are already bound to all. You have it already */
5485 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5486 if (laddr->ifa == ifa) {
5491 if (fnd && (inp->laddr_count < 2)) {
5492 /* can't delete unless there are at LEAST 2 addresses */
5497 * clean up any use of this address go through our
5498 * associations and clear any last_used_address that match
5499 * this one for each assoc, see if a new primary_destination
5502 struct sctp_tcb *stcb;
5504 /* clean up "next_addr_touse" */
5505 if (inp->next_addr_touse == laddr)
5506 /* delete this address */
5507 inp->next_addr_touse = NULL;
5509 /* clean up "last_used_address" */
5510 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5511 struct sctp_nets *net;
5513 SCTP_TCB_LOCK(stcb);
5514 if (stcb->asoc.last_used_address == laddr)
5515 /* delete this address */
5516 stcb->asoc.last_used_address = NULL;
5518 * Now spin through all the nets and purge any ref
5521 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5522 if (net->ro._s_addr &&
5523 (net->ro._s_addr->ifa == laddr->ifa)) {
5524 /* Yep, purge src address selected */
5527 /* delete this address if cached */
5531 net->ro.ro_rt = NULL;
5533 sctp_free_ifa(net->ro._s_addr);
5534 net->ro._s_addr = NULL;
5535 net->src_addr_selected = 0;
5538 SCTP_TCB_UNLOCK(stcb);
5539 } /* for each tcb */
5540 /* remove it from the ep list */
5541 sctp_remove_laddr(laddr);
5543 /* update inp_vflag flags */
5544 sctp_update_ep_vflag(inp);
5550 * Add the address to the TCB local address restricted list.
5551 * This is a "pending" address list (eg. addresses waiting for an
5552 * ASCONF-ACK response) and cannot be used as a valid source address.
5555 sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5557 struct sctp_inpcb *inp;
5558 struct sctp_laddr *laddr;
5559 struct sctpladdr *list;
5562 * Assumes TCB is locked.. and possibly the INP. May need to
5563 * confirm/fix that if we need it and is not the case.
5565 list = &stcb->asoc.sctp_restricted_addrs;
5567 inp = stcb->sctp_ep;
5569 if (ifa->address.sa.sa_family == AF_INET6) {
5570 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5571 /* Can't bind a non-existent addr. */
5576 /* does the address already exist? */
5577 LIST_FOREACH(laddr, list, sctp_nxt_addr) {
5578 if (laddr->ifa == ifa) {
5583 /* add to the list */
5584 (void)sctp_insert_laddr(list, ifa, 0);
5589 * insert an laddr entry with the given ifa for the desired list
5592 sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
5594 struct sctp_laddr *laddr;
5596 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
5597 if (laddr == NULL) {
5598 /* out of memory? */
5599 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
5602 SCTP_INCR_LADDR_COUNT();
5603 bzero(laddr, sizeof(*laddr));
5604 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
5606 laddr->action = act;
5607 atomic_add_int(&ifa->refcount, 1);
5609 LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr);
5615 * Remove an laddr entry from the local address list (on an assoc)
5618 sctp_remove_laddr(struct sctp_laddr *laddr)
5621 /* remove from the list */
5622 LIST_REMOVE(laddr, sctp_nxt_addr);
5623 sctp_free_ifa(laddr->ifa);
5624 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr);
5625 SCTP_DECR_LADDR_COUNT();
5629 * Remove a local address from the TCB local address restricted list
5632 sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5634 struct sctp_inpcb *inp;
5635 struct sctp_laddr *laddr;
5638 * This is called by asconf work. It is assumed that a) The TCB is
5639 * locked and b) The INP is locked. This is true in as much as I can
5640 * trace through the entry asconf code where I did these locks.
5641 * Again, the ASCONF code is a bit different in that it does lock
5642 * the INP during its work often times. This must be since we don't
5643 * want other proc's looking up things while what they are looking
5644 * up is changing :-D
5647 inp = stcb->sctp_ep;
5648 /* if subset bound and don't allow ASCONF's, can't delete last */
5649 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
5650 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
5651 if (stcb->sctp_ep->laddr_count < 2) {
5652 /* can't delete last address */
5656 LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
5657 /* remove the address if it exists */
5658 if (laddr->ifa == NULL)
5660 if (laddr->ifa == ifa) {
5661 sctp_remove_laddr(laddr);
5666 /* address not found! */
5671 * Temporarily remove for __APPLE__ until we use the Tiger equivalents
5674 static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;
5675 static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR;
5679 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5680 struct sctp_mcore_ctrl *sctp_mcore_workers = NULL;
5681 int *sctp_cpuarry = NULL;
5683 sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use)
5685 /* Queue a packet to a processor for the specified core */
5686 struct sctp_mcore_queue *qent;
5687 struct sctp_mcore_ctrl *wkq;
5690 if (sctp_mcore_workers == NULL) {
5691 /* Something went way bad during setup */
5692 sctp_input_with_port(m, off, 0);
5695 SCTP_MALLOC(qent, struct sctp_mcore_queue *,
5696 (sizeof(struct sctp_mcore_queue)),
5699 /* This is trouble */
5700 sctp_input_with_port(m, off, 0);
5707 wkq = &sctp_mcore_workers[cpu_to_use];
5708 SCTP_MCORE_QLOCK(wkq);
5710 TAILQ_INSERT_TAIL(&wkq->que, qent, next);
5711 if (wkq->running == 0) {
5714 SCTP_MCORE_QUNLOCK(wkq);
5716 wakeup(&wkq->running);
5721 sctp_mcore_thread(void *arg)
5724 struct sctp_mcore_ctrl *wkq;
5725 struct sctp_mcore_queue *qent;
5727 wkq = (struct sctp_mcore_ctrl *)arg;
5731 /* Wait for first tickle */
5732 SCTP_MCORE_LOCK(wkq);
5734 msleep(&wkq->running,
5736 0, "wait for pkt", 0);
5737 SCTP_MCORE_UNLOCK(wkq);
5739 /* Bind to our cpu */
5740 thread_lock(curthread);
5741 sched_bind(curthread, wkq->cpuid);
5742 thread_unlock(curthread);
5744 /* Now lets start working */
5745 SCTP_MCORE_LOCK(wkq);
5746 /* Now grab lock and go */
5748 SCTP_MCORE_QLOCK(wkq);
5751 qent = TAILQ_FIRST(&wkq->que);
5753 TAILQ_REMOVE(&wkq->que, qent, next);
5754 SCTP_MCORE_QUNLOCK(wkq);
5755 CURVNET_SET(qent->vn);
5759 SCTP_FREE(qent, SCTP_M_MCORE);
5761 sctp_input_with_port(m, off, 0);
5763 printf("V6 not yet supported\n");
5767 SCTP_MCORE_QLOCK(wkq);
5770 if (!TAILQ_EMPTY(&wkq->que)) {
5773 SCTP_MCORE_QUNLOCK(wkq);
5774 msleep(&wkq->running,
5776 0, "wait for pkt", 0);
5781 sctp_startup_mcore_threads(void)
5788 if (sctp_mcore_workers != NULL) {
5790 * Already been here in some previous vnet?
5794 SCTP_MALLOC(sctp_mcore_workers, struct sctp_mcore_ctrl *,
5795 ((mp_maxid + 1) * sizeof(struct sctp_mcore_ctrl)),
5797 if (sctp_mcore_workers == NULL) {
5801 memset(sctp_mcore_workers, 0, ((mp_maxid + 1) *
5802 sizeof(struct sctp_mcore_ctrl)));
5803 /* Init the structures */
5804 for (i = 0; i <= mp_maxid; i++) {
5805 TAILQ_INIT(&sctp_mcore_workers[i].que);
5806 SCTP_MCORE_LOCK_INIT(&sctp_mcore_workers[i]);
5807 SCTP_MCORE_QLOCK_INIT(&sctp_mcore_workers[i]);
5808 sctp_mcore_workers[i].cpuid = i;
5810 if (sctp_cpuarry == NULL) {
5811 SCTP_MALLOC(sctp_cpuarry, int *,
5812 (mp_ncpus * sizeof(int)),
5816 sctp_cpuarry[i] = cpu;
5820 /* Now start them all */
5822 (void)kproc_create(sctp_mcore_thread,
5823 (void *)&sctp_mcore_workers[cpu],
5824 &sctp_mcore_workers[cpu].thread_proc,
5838 * SCTP initialization for the PCB structures should be called by
5839 * the sctp_init() funciton.
5844 if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) {
5845 /* error I was called twice */
5848 SCTP_BASE_VAR(sctp_pcb_initialized) = 1;
5850 #if defined(SCTP_LOCAL_TRACE_BUF)
5851 bzero(&SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));
5853 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5854 SCTP_MALLOC(SCTP_BASE_STATS, struct sctpstat *,
5855 ((mp_maxid + 1) * sizeof(struct sctpstat)),
5858 (void)SCTP_GETTIME_TIMEVAL(&tv);
5859 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5860 bzero(SCTP_BASE_STATS, (sizeof(struct sctpstat) * (mp_maxid + 1)));
5861 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t) tv.tv_sec;
5862 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t) tv.tv_usec;
5864 bzero(&SCTP_BASE_STATS, sizeof(struct sctpstat));
5865 SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t) tv.tv_sec;
5866 SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t) tv.tv_usec;
5868 /* init the empty list of (All) Endpoints */
5869 LIST_INIT(&SCTP_BASE_INFO(listhead));
5872 /* init the hash table of endpoints */
5873 TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize));
5874 TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize));
5875 TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale));
5876 SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31),
5877 &SCTP_BASE_INFO(hashasocmark));
5878 SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5879 &SCTP_BASE_INFO(hashmark));
5880 SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5881 &SCTP_BASE_INFO(hashtcpmark));
5882 SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize);
5885 SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH,
5886 &SCTP_BASE_INFO(hashvrfmark));
5888 SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE,
5889 &SCTP_BASE_INFO(vrf_ifn_hashmark));
5890 /* init the zones */
5892 * FIX ME: Should check for NULL returns, but if it does fail we are
5893 * doomed to panic anyways... add later maybe.
5895 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep",
5896 sizeof(struct sctp_inpcb), maxsockets);
5898 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc",
5899 sizeof(struct sctp_tcb), sctp_max_number_of_assoc);
5901 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr",
5902 sizeof(struct sctp_laddr),
5903 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5905 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr",
5906 sizeof(struct sctp_nets),
5907 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5909 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk",
5910 sizeof(struct sctp_tmit_chunk),
5911 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5913 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq",
5914 sizeof(struct sctp_queued_to_read),
5915 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5917 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out",
5918 sizeof(struct sctp_stream_queue_pending),
5919 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5921 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf",
5922 sizeof(struct sctp_asconf),
5923 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5925 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack",
5926 sizeof(struct sctp_asconf_ack),
5927 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5930 /* Master Lock INIT for info structure */
5931 SCTP_INP_INFO_LOCK_INIT();
5932 SCTP_STATLOG_INIT_LOCK();
5934 SCTP_IPI_COUNT_INIT();
5935 SCTP_IPI_ADDR_INIT();
5936 #ifdef SCTP_PACKET_LOGGING
5937 SCTP_IP_PKTLOG_INIT();
5939 LIST_INIT(&SCTP_BASE_INFO(addr_wq));
5941 SCTP_WQ_ADDR_INIT();
5942 /* not sure if we need all the counts */
5943 SCTP_BASE_INFO(ipi_count_ep) = 0;
5944 /* assoc/tcb zone info */
5945 SCTP_BASE_INFO(ipi_count_asoc) = 0;
5946 /* local addrlist zone info */
5947 SCTP_BASE_INFO(ipi_count_laddr) = 0;
5948 /* remote addrlist zone info */
5949 SCTP_BASE_INFO(ipi_count_raddr) = 0;
5951 SCTP_BASE_INFO(ipi_count_chunk) = 0;
5953 /* socket queue zone info */
5954 SCTP_BASE_INFO(ipi_count_readq) = 0;
5956 /* stream out queue cont */
5957 SCTP_BASE_INFO(ipi_count_strmoq) = 0;
5959 SCTP_BASE_INFO(ipi_free_strmoq) = 0;
5960 SCTP_BASE_INFO(ipi_free_chunks) = 0;
5962 SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer));
5964 /* Init the TIMEWAIT list */
5965 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5966 LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]);
5969 sctp_startup_iterator();
5971 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5972 sctp_startup_mcore_threads();
5976 * INIT the default VRF which for BSD is the only one, other O/S's
5977 * may have more. But initially they must start with one and then
5978 * add the VRF's as addresses are added.
5980 sctp_init_vrf_list(SCTP_DEFAULT_VRF);
5984 * Assumes that the SCTP_BASE_INFO() lock is NOT held.
5987 sctp_pcb_finish(void)
5989 struct sctp_vrflist *vrf_bucket;
5990 struct sctp_vrf *vrf, *nvrf;
5991 struct sctp_ifn *ifn, *nifn;
5992 struct sctp_ifa *ifa, *nifa;
5993 struct sctpvtaghead *chain;
5994 struct sctp_tagblock *twait_block, *prev_twait_block;
5995 struct sctp_laddr *wi, *nwi;
5999 * Free BSD the it thread never exits but we do clean up. The only
6000 * way freebsd reaches here if we have VRF's but we still add the
6001 * ifdef to make it compile on old versions.
6004 struct sctp_iterator *it, *nit;
6006 SCTP_IPI_ITERATOR_WQ_LOCK();
6007 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
6008 if (it->vn != curvnet) {
6011 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
6012 if (it->function_atend != NULL) {
6013 (*it->function_atend) (it->pointer, it->val);
6015 SCTP_FREE(it, SCTP_M_ITER);
6017 SCTP_IPI_ITERATOR_WQ_UNLOCK();
6018 SCTP_ITERATOR_LOCK();
6019 if ((sctp_it_ctl.cur_it) &&
6020 (sctp_it_ctl.cur_it->vn == curvnet)) {
6021 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
6023 SCTP_ITERATOR_UNLOCK();
6026 SCTP_OS_TIMER_STOP(&SCTP_BASE_INFO(addr_wq_timer.timer));
6027 SCTP_WQ_ADDR_LOCK();
6028 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
6029 LIST_REMOVE(wi, sctp_nxt_addr);
6030 SCTP_DECR_LADDR_COUNT();
6031 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi);
6033 SCTP_WQ_ADDR_UNLOCK();
6036 * free the vrf/ifn/ifa lists and hashes (be sure address monitor is
6039 vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))];
6040 LIST_FOREACH_SAFE(vrf, vrf_bucket, next_vrf, nvrf) {
6041 LIST_FOREACH_SAFE(ifn, &vrf->ifnlist, next_ifn, nifn) {
6042 LIST_FOREACH_SAFE(ifa, &ifn->ifalist, next_ifa, nifa) {
6044 LIST_REMOVE(ifa, next_bucket);
6045 LIST_REMOVE(ifa, next_ifa);
6046 SCTP_FREE(ifa, SCTP_M_IFA);
6049 LIST_REMOVE(ifn, next_bucket);
6050 LIST_REMOVE(ifn, next_ifn);
6051 SCTP_FREE(ifn, SCTP_M_IFN);
6053 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
6055 LIST_REMOVE(vrf, next_vrf);
6056 SCTP_FREE(vrf, SCTP_M_VRF);
6058 /* free the vrf hashes */
6059 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark));
6060 SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark));
6063 * free the TIMEWAIT list elements malloc'd in the function
6064 * sctp_add_vtag_to_timewait()...
6066 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
6067 chain = &SCTP_BASE_INFO(vtag_timewait)[i];
6068 if (!LIST_EMPTY(chain)) {
6069 prev_twait_block = NULL;
6070 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6071 if (prev_twait_block) {
6072 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
6074 prev_twait_block = twait_block;
6076 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
6080 /* free the locks and mutexes */
6081 #ifdef SCTP_PACKET_LOGGING
6082 SCTP_IP_PKTLOG_DESTROY();
6084 SCTP_IPI_ADDR_DESTROY();
6085 SCTP_STATLOG_DESTROY();
6086 SCTP_INP_INFO_LOCK_DESTROY();
6088 SCTP_WQ_ADDR_DESTROY();
6090 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep));
6091 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc));
6092 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr));
6093 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net));
6094 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk));
6095 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq));
6096 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq));
6097 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf));
6098 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack));
6099 /* Get rid of other stuff to */
6100 if (SCTP_BASE_INFO(sctp_asochash) != NULL)
6101 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark));
6102 if (SCTP_BASE_INFO(sctp_ephash) != NULL)
6103 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark));
6104 if (SCTP_BASE_INFO(sctp_tcpephash) != NULL)
6105 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark));
6106 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
6107 SCTP_FREE(SCTP_BASE_STATS, SCTP_M_MCORE);
6113 sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m,
6114 int iphlen, int offset, int limit, struct sctphdr *sh,
6115 struct sockaddr *altsa)
6118 * grub through the INIT pulling addresses and loading them to the
6119 * nets structure in the asoc. The from address in the mbuf should
6120 * also be loaded (if it is not already). This routine can be called
6121 * with either INIT or INIT-ACK's as long as the m points to the IP
6122 * packet and the offset points to the beginning of the parameters.
6124 struct sctp_inpcb *inp, *l_inp;
6125 struct sctp_nets *net, *nnet, *net_tmp;
6127 struct sctp_paramhdr *phdr, parm_buf;
6128 struct sctp_tcb *stcb_tmp;
6129 uint16_t ptype, plen;
6130 struct sockaddr *sa;
6131 struct sockaddr_storage dest_store;
6132 struct sockaddr *local_sa = (struct sockaddr *)&dest_store;
6133 uint8_t random_store[SCTP_PARAM_BUFFER_SIZE];
6134 struct sctp_auth_random *p_random = NULL;
6135 uint16_t random_len = 0;
6136 uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE];
6137 struct sctp_auth_hmac_algo *hmacs = NULL;
6138 uint16_t hmacs_len = 0;
6139 uint8_t saw_asconf = 0;
6140 uint8_t saw_asconf_ack = 0;
6141 uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE];
6142 struct sctp_auth_chunk_list *chunks = NULL;
6143 uint16_t num_chunks = 0;
6144 sctp_key_t *new_key;
6146 int got_random = 0, got_hmacs = 0, got_chklist = 0;
6147 uint8_t ecn_allowed;
6150 struct sockaddr_in sin;
6154 struct sockaddr_in6 sin6;
6158 /* First get the destination address setup too. */
6160 memset(&sin, 0, sizeof(sin));
6161 sin.sin_family = AF_INET;
6162 sin.sin_len = sizeof(sin);
6163 sin.sin_port = stcb->rport;
6166 memset(&sin6, 0, sizeof(sin6));
6167 sin6.sin6_family = AF_INET6;
6168 sin6.sin6_len = sizeof(struct sockaddr_in6);
6169 sin6.sin6_port = stcb->rport;
6171 if (altsa == NULL) {
6172 iph = mtod(m, struct ip *);
6173 switch (iph->ip_v) {
6178 struct sockaddr_in *sin_2;
6180 sin_2 = (struct sockaddr_in *)(local_sa);
6181 memset(sin_2, 0, sizeof(sin));
6182 sin_2->sin_family = AF_INET;
6183 sin_2->sin_len = sizeof(sin);
6184 sin_2->sin_port = sh->dest_port;
6185 sin_2->sin_addr.s_addr = iph->ip_dst.s_addr;
6186 sin.sin_addr = iph->ip_src;
6187 sa = (struct sockaddr *)&sin;
6192 case IPV6_VERSION >> 4:
6195 struct ip6_hdr *ip6;
6196 struct sockaddr_in6 *sin6_2;
6198 ip6 = mtod(m, struct ip6_hdr *);
6199 sin6_2 = (struct sockaddr_in6 *)(local_sa);
6200 memset(sin6_2, 0, sizeof(sin6));
6201 sin6_2->sin6_family = AF_INET6;
6202 sin6_2->sin6_len = sizeof(struct sockaddr_in6);
6203 sin6_2->sin6_port = sh->dest_port;
6204 sin6.sin6_addr = ip6->ip6_src;
6205 sa = (struct sockaddr *)&sin6;
6215 * For cookies we use the src address NOT from the packet
6216 * but from the original INIT
6220 /* Turn off ECN until we get through all params */
6222 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
6223 /* mark all addresses that we have currently on the list */
6224 net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC;
6226 /* does the source address already exist? if so skip it */
6227 l_inp = inp = stcb->sctp_ep;
6229 atomic_add_int(&stcb->asoc.refcnt, 1);
6230 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, local_sa, stcb);
6231 atomic_add_int(&stcb->asoc.refcnt, -1);
6233 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) {
6234 /* we must add the source address */
6235 /* no scope set here since we have a tcb already. */
6236 switch (sa->sa_family) {
6239 if (stcb->asoc.ipv4_addr_legal) {
6240 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) {
6248 if (stcb->asoc.ipv6_addr_legal) {
6249 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
6259 if (net_tmp != NULL && stcb_tmp == stcb) {
6260 net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC;
6261 } else if (stcb_tmp != stcb) {
6262 /* It belongs to another association? */
6264 SCTP_TCB_UNLOCK(stcb_tmp);
6268 if (stcb->asoc.state == 0) {
6269 /* the assoc was freed? */
6273 * peer must explicitly turn this on. This may have been initialized
6274 * to be "on" in order to allow local addr changes while INIT's are
6277 stcb->asoc.peer_supports_asconf = 0;
6278 /* now we must go through each of the params. */
6279 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
6281 ptype = ntohs(phdr->param_type);
6282 plen = ntohs(phdr->param_length);
6284 * printf("ptype => %0x, plen => %d\n", (uint32_t)ptype,
6287 if (offset + plen > limit) {
6294 if (ptype == SCTP_IPV4_ADDRESS) {
6295 if (stcb->asoc.ipv4_addr_legal) {
6296 struct sctp_ipv4addr_param *p4, p4_buf;
6298 /* ok get the v4 address and check/add */
6299 phdr = sctp_get_next_param(m, offset,
6300 (struct sctp_paramhdr *)&p4_buf,
6302 if (plen != sizeof(struct sctp_ipv4addr_param) ||
6306 p4 = (struct sctp_ipv4addr_param *)phdr;
6307 sin.sin_addr.s_addr = p4->addr;
6308 if (IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) {
6309 /* Skip multi-cast addresses */
6312 if ((sin.sin_addr.s_addr == INADDR_BROADCAST) ||
6313 (sin.sin_addr.s_addr == INADDR_ANY)) {
6316 sa = (struct sockaddr *)&sin;
6317 inp = stcb->sctp_ep;
6318 atomic_add_int(&stcb->asoc.refcnt, 1);
6319 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6321 atomic_add_int(&stcb->asoc.refcnt, -1);
6323 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) ||
6325 /* we must add the source address */
6327 * no scope set since we have a tcb
6332 * we must validate the state again
6336 if (stcb->asoc.state == 0) {
6337 /* the assoc was freed? */
6340 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) {
6343 } else if (stcb_tmp == stcb) {
6344 if (stcb->asoc.state == 0) {
6345 /* the assoc was freed? */
6351 ~SCTP_ADDR_NOT_IN_ASSOC;
6355 * strange, address is in another
6356 * assoc? straighten out locks.
6359 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6364 sctp_abort_an_association(stcb_tmp->sctp_ep,
6365 stcb_tmp, 1, NULL, 0);
6368 SCTP_TCB_UNLOCK(stcb_tmp);
6370 if (stcb->asoc.state == 0) {
6371 /* the assoc was freed? */
6380 if (ptype == SCTP_IPV6_ADDRESS) {
6381 if (stcb->asoc.ipv6_addr_legal) {
6382 /* ok get the v6 address and check/add */
6383 struct sctp_ipv6addr_param *p6, p6_buf;
6385 phdr = sctp_get_next_param(m, offset,
6386 (struct sctp_paramhdr *)&p6_buf,
6388 if (plen != sizeof(struct sctp_ipv6addr_param) ||
6392 p6 = (struct sctp_ipv6addr_param *)phdr;
6393 memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
6395 if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) {
6396 /* Skip multi-cast addresses */
6399 if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) {
6401 * Link local make no sense without
6406 sa = (struct sockaddr *)&sin6;
6407 inp = stcb->sctp_ep;
6408 atomic_add_int(&stcb->asoc.refcnt, 1);
6409 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6411 atomic_add_int(&stcb->asoc.refcnt, -1);
6412 if (stcb_tmp == NULL &&
6413 (inp == stcb->sctp_ep || inp == NULL)) {
6415 * we must validate the state again
6419 if (stcb->asoc.state == 0) {
6420 /* the assoc was freed? */
6424 * we must add the address, no scope
6427 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) {
6430 } else if (stcb_tmp == stcb) {
6432 * we must validate the state again
6435 if (stcb->asoc.state == 0) {
6436 /* the assoc was freed? */
6442 ~SCTP_ADDR_NOT_IN_ASSOC;
6446 * strange, address is in another
6447 * assoc? straighten out locks.
6450 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6455 sctp_abort_an_association(stcb_tmp->sctp_ep,
6456 stcb_tmp, 1, NULL, 0);
6459 SCTP_TCB_UNLOCK(stcb_tmp);
6461 if (stcb->asoc.state == 0) {
6462 /* the assoc was freed? */
6470 if (ptype == SCTP_ECN_CAPABLE) {
6472 } else if (ptype == SCTP_ULP_ADAPTATION) {
6473 if (stcb->asoc.state != SCTP_STATE_OPEN) {
6474 struct sctp_adaptation_layer_indication ai,
6477 phdr = sctp_get_next_param(m, offset,
6478 (struct sctp_paramhdr *)&ai, sizeof(ai));
6479 aip = (struct sctp_adaptation_layer_indication *)phdr;
6481 stcb->asoc.peers_adaptation = ntohl(aip->indication);
6482 stcb->asoc.adaptation_needed = 1;
6485 } else if (ptype == SCTP_SET_PRIM_ADDR) {
6486 struct sctp_asconf_addr_param lstore, *fee;
6488 struct sockaddr *lsa = NULL;
6491 struct sctp_asconf_addrv4_param *fii;
6495 stcb->asoc.peer_supports_asconf = 1;
6496 if (plen > sizeof(lstore)) {
6499 phdr = sctp_get_next_param(m, offset,
6500 (struct sctp_paramhdr *)&lstore,
6501 min(plen, sizeof(lstore)));
6505 fee = (struct sctp_asconf_addr_param *)phdr;
6506 lptype = ntohs(fee->addrp.ph.param_type);
6509 case SCTP_IPV4_ADDRESS:
6511 sizeof(struct sctp_asconf_addrv4_param)) {
6512 SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n",
6513 (int)sizeof(struct sctp_asconf_addrv4_param),
6516 fii = (struct sctp_asconf_addrv4_param *)fee;
6517 sin.sin_addr.s_addr = fii->addrp.addr;
6518 lsa = (struct sockaddr *)&sin;
6523 case SCTP_IPV6_ADDRESS:
6525 sizeof(struct sctp_asconf_addr_param)) {
6526 SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n",
6527 (int)sizeof(struct sctp_asconf_addr_param),
6530 memcpy(sin6.sin6_addr.s6_addr,
6532 sizeof(fee->addrp.addr));
6533 lsa = (struct sockaddr *)&sin6;
6541 (void)sctp_set_primary_addr(stcb, sa, NULL);
6543 } else if (ptype == SCTP_HAS_NAT_SUPPORT) {
6544 stcb->asoc.peer_supports_nat = 1;
6545 } else if (ptype == SCTP_PRSCTP_SUPPORTED) {
6546 /* Peer supports pr-sctp */
6547 stcb->asoc.peer_supports_prsctp = 1;
6548 } else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) {
6549 /* A supported extension chunk */
6550 struct sctp_supported_chunk_types_param *pr_supported;
6551 uint8_t local_store[SCTP_PARAM_BUFFER_SIZE];
6554 phdr = sctp_get_next_param(m, offset,
6555 (struct sctp_paramhdr *)&local_store, min(sizeof(local_store), plen));
6559 stcb->asoc.peer_supports_asconf = 0;
6560 stcb->asoc.peer_supports_prsctp = 0;
6561 stcb->asoc.peer_supports_pktdrop = 0;
6562 stcb->asoc.peer_supports_strreset = 0;
6563 stcb->asoc.peer_supports_nr_sack = 0;
6564 stcb->asoc.peer_supports_auth = 0;
6565 pr_supported = (struct sctp_supported_chunk_types_param *)phdr;
6566 num_ent = plen - sizeof(struct sctp_paramhdr);
6567 for (i = 0; i < num_ent; i++) {
6568 switch (pr_supported->chunk_types[i]) {
6570 case SCTP_ASCONF_ACK:
6571 stcb->asoc.peer_supports_asconf = 1;
6573 case SCTP_FORWARD_CUM_TSN:
6574 stcb->asoc.peer_supports_prsctp = 1;
6576 case SCTP_PACKET_DROPPED:
6577 stcb->asoc.peer_supports_pktdrop = 1;
6579 case SCTP_NR_SELECTIVE_ACK:
6580 stcb->asoc.peer_supports_nr_sack = 1;
6582 case SCTP_STREAM_RESET:
6583 stcb->asoc.peer_supports_strreset = 1;
6585 case SCTP_AUTHENTICATION:
6586 stcb->asoc.peer_supports_auth = 1;
6589 /* one I have not learned yet */
6594 } else if (ptype == SCTP_RANDOM) {
6595 if (plen > sizeof(random_store))
6598 /* already processed a RANDOM */
6601 phdr = sctp_get_next_param(m, offset,
6602 (struct sctp_paramhdr *)random_store,
6603 min(sizeof(random_store), plen));
6606 p_random = (struct sctp_auth_random *)phdr;
6607 random_len = plen - sizeof(*p_random);
6608 /* enforce the random length */
6609 if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) {
6610 SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n");
6614 } else if (ptype == SCTP_HMAC_LIST) {
6618 if (plen > sizeof(hmacs_store))
6621 /* already processed a HMAC list */
6624 phdr = sctp_get_next_param(m, offset,
6625 (struct sctp_paramhdr *)hmacs_store,
6626 min(plen, sizeof(hmacs_store)));
6629 hmacs = (struct sctp_auth_hmac_algo *)phdr;
6630 hmacs_len = plen - sizeof(*hmacs);
6631 num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]);
6632 /* validate the hmac list */
6633 if (sctp_verify_hmac_param(hmacs, num_hmacs)) {
6636 if (stcb->asoc.peer_hmacs != NULL)
6637 sctp_free_hmaclist(stcb->asoc.peer_hmacs);
6638 stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs);
6639 if (stcb->asoc.peer_hmacs != NULL) {
6640 for (i = 0; i < num_hmacs; i++) {
6641 (void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs,
6642 ntohs(hmacs->hmac_ids[i]));
6646 } else if (ptype == SCTP_CHUNK_LIST) {
6649 if (plen > sizeof(chunks_store))
6652 /* already processed a Chunks list */
6655 phdr = sctp_get_next_param(m, offset,
6656 (struct sctp_paramhdr *)chunks_store,
6657 min(plen, sizeof(chunks_store)));
6660 chunks = (struct sctp_auth_chunk_list *)phdr;
6661 num_chunks = plen - sizeof(*chunks);
6662 if (stcb->asoc.peer_auth_chunks != NULL)
6663 sctp_clear_chunklist(stcb->asoc.peer_auth_chunks);
6665 stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist();
6666 for (i = 0; i < num_chunks; i++) {
6667 (void)sctp_auth_add_chunk(chunks->chunk_types[i],
6668 stcb->asoc.peer_auth_chunks);
6669 /* record asconf/asconf-ack if listed */
6670 if (chunks->chunk_types[i] == SCTP_ASCONF)
6672 if (chunks->chunk_types[i] == SCTP_ASCONF_ACK)
6677 } else if ((ptype == SCTP_HEARTBEAT_INFO) ||
6678 (ptype == SCTP_STATE_COOKIE) ||
6679 (ptype == SCTP_UNRECOG_PARAM) ||
6680 (ptype == SCTP_COOKIE_PRESERVE) ||
6681 (ptype == SCTP_SUPPORTED_ADDRTYPE) ||
6682 (ptype == SCTP_ADD_IP_ADDRESS) ||
6683 (ptype == SCTP_DEL_IP_ADDRESS) ||
6684 (ptype == SCTP_ERROR_CAUSE_IND) ||
6685 (ptype == SCTP_SUCCESS_REPORT)) {
6688 if ((ptype & 0x8000) == 0x0000) {
6690 * must stop processing the rest of the
6691 * param's. Any report bits were handled
6693 * sctp_arethere_unrecognized_parameters()
6694 * when the INIT or INIT-ACK was first seen.
6701 offset += SCTP_SIZE32(plen);
6702 if (offset >= limit) {
6705 phdr = sctp_get_next_param(m, offset, &parm_buf,
6708 /* Now check to see if we need to purge any addresses */
6709 TAILQ_FOREACH_SAFE(net, &stcb->asoc.nets, sctp_next, nnet) {
6710 if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) ==
6711 SCTP_ADDR_NOT_IN_ASSOC) {
6712 /* This address has been removed from the asoc */
6713 /* remove and free it */
6714 stcb->asoc.numnets--;
6715 TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next);
6716 sctp_free_remote_addr(net);
6717 if (net == stcb->asoc.primary_destination) {
6718 stcb->asoc.primary_destination = NULL;
6719 sctp_select_primary_destination(stcb);
6723 if (ecn_allowed == 0) {
6724 stcb->asoc.ecn_allowed = 0;
6726 /* validate authentication required parameters */
6727 if (got_random && got_hmacs) {
6728 stcb->asoc.peer_supports_auth = 1;
6730 stcb->asoc.peer_supports_auth = 0;
6732 if (!stcb->asoc.peer_supports_auth && got_chklist) {
6733 /* peer does not support auth but sent a chunks list? */
6736 if (!SCTP_BASE_SYSCTL(sctp_asconf_auth_nochk) && stcb->asoc.peer_supports_asconf &&
6737 !stcb->asoc.peer_supports_auth) {
6738 /* peer supports asconf but not auth? */
6740 } else if ((stcb->asoc.peer_supports_asconf) && (stcb->asoc.peer_supports_auth) &&
6741 ((saw_asconf == 0) || (saw_asconf_ack == 0))) {
6744 /* concatenate the full random key */
6745 keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len;
6746 if (chunks != NULL) {
6747 keylen += sizeof(*chunks) + num_chunks;
6749 new_key = sctp_alloc_key(keylen);
6750 if (new_key != NULL) {
6751 /* copy in the RANDOM */
6752 if (p_random != NULL) {
6753 keylen = sizeof(*p_random) + random_len;
6754 bcopy(p_random, new_key->key, keylen);
6756 /* append in the AUTH chunks */
6757 if (chunks != NULL) {
6758 bcopy(chunks, new_key->key + keylen,
6759 sizeof(*chunks) + num_chunks);
6760 keylen += sizeof(*chunks) + num_chunks;
6762 /* append in the HMACs */
6763 if (hmacs != NULL) {
6764 bcopy(hmacs, new_key->key + keylen,
6765 sizeof(*hmacs) + hmacs_len);
6768 /* failed to get memory for the key */
6771 if (stcb->asoc.authinfo.peer_random != NULL)
6772 sctp_free_key(stcb->asoc.authinfo.peer_random);
6773 stcb->asoc.authinfo.peer_random = new_key;
6774 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid);
6775 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid);
6781 sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa,
6782 struct sctp_nets *net)
6784 /* make sure the requested primary address exists in the assoc */
6785 if (net == NULL && sa)
6786 net = sctp_findnet(stcb, sa);
6789 /* didn't find the requested primary address! */
6792 /* set the primary address */
6793 if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
6794 /* Must be confirmed, so queue to set */
6795 net->dest_state |= SCTP_ADDR_REQ_PRIMARY;
6798 stcb->asoc.primary_destination = net;
6799 if (!(net->dest_state & SCTP_ADDR_PF) && (stcb->asoc.alternate)) {
6800 sctp_free_remote_addr(stcb->asoc.alternate);
6801 stcb->asoc.alternate = NULL;
6803 net = TAILQ_FIRST(&stcb->asoc.nets);
6804 if (net != stcb->asoc.primary_destination) {
6806 * first one on the list is NOT the primary
6807 * sctp_cmpaddr() is much more efficient if the
6808 * primary is the first on the list, make it so.
6810 TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6811 TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6818 sctp_is_vtag_good(struct sctp_inpcb *inp, uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now, int save_in_twait)
6821 * This function serves two purposes. It will see if a TAG can be
6822 * re-used and return 1 for yes it is ok and 0 for don't use that
6823 * tag. A secondary function it will do is purge out old tags that
6826 struct sctpvtaghead *chain;
6827 struct sctp_tagblock *twait_block;
6828 struct sctpasochead *head;
6829 struct sctp_tcb *stcb;
6832 SCTP_INP_INFO_RLOCK();
6833 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag,
6834 SCTP_BASE_INFO(hashasocmark))];
6837 goto skip_vtag_check;
6839 LIST_FOREACH(stcb, head, sctp_asocs) {
6841 * We choose not to lock anything here. TCB's can't be
6842 * removed since we have the read lock, so they can't be
6843 * freed on us, same thing for the INP. I may be wrong with
6844 * this assumption, but we will go with it for now :-)
6846 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
6849 if (stcb->asoc.my_vtag == tag) {
6851 if (stcb->rport != rport) {
6854 if (stcb->sctp_ep->sctp_lport != lport) {
6857 /* Its a used tag set */
6858 SCTP_INP_INFO_RUNLOCK();
6864 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
6865 /* Now what about timed wait ? */
6866 if (!LIST_EMPTY(chain)) {
6868 * Block(s) are present, lets see if we have this tag in the
6871 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6872 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
6873 if (twait_block->vtag_block[i].v_tag == 0) {
6876 } else if ((long)twait_block->vtag_block[i].tv_sec_at_expire <
6878 /* Audit expires this guy */
6879 twait_block->vtag_block[i].tv_sec_at_expire = 0;
6880 twait_block->vtag_block[i].v_tag = 0;
6881 twait_block->vtag_block[i].lport = 0;
6882 twait_block->vtag_block[i].rport = 0;
6883 } else if ((twait_block->vtag_block[i].v_tag == tag) &&
6884 (twait_block->vtag_block[i].lport == lport) &&
6885 (twait_block->vtag_block[i].rport == rport)) {
6886 /* Bad tag, sorry :< */
6887 SCTP_INP_INFO_RUNLOCK();
6893 SCTP_INP_INFO_RUNLOCK();
6898 static sctp_assoc_t reneged_asoc_ids[256];
6899 static uint8_t reneged_at = 0;
6903 sctp_drain_mbufs(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
6906 * We must hunt this association for MBUF's past the cumack (i.e.
6907 * out of order data that we can renege on).
6909 struct sctp_association *asoc;
6910 struct sctp_tmit_chunk *chk, *nchk;
6911 uint32_t cumulative_tsn_p1;
6912 struct sctp_queued_to_read *ctl, *nctl;
6917 /* We look for anything larger than the cum-ack + 1 */
6920 if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) {
6921 /* none we can reneg on. */
6924 SCTP_STAT_INCR(sctps_protocol_drains_done);
6925 cumulative_tsn_p1 = asoc->cumulative_tsn + 1;
6927 /* First look in the re-assembly queue */
6928 TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) {
6929 if (SCTP_TSN_GT(chk->rec.data.TSN_seq, cumulative_tsn_p1)) {
6930 /* Yep it is above cum-ack */
6932 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.TSN_seq, asoc->mapping_array_base_tsn);
6933 asoc->size_on_reasm_queue = sctp_sbspace_sub(asoc->size_on_reasm_queue, chk->send_size);
6934 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6935 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6936 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
6938 sctp_m_freem(chk->data);
6941 sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
6944 /* Ok that was fun, now we will drain all the inbound streams? */
6945 for (strmat = 0; strmat < asoc->streamincnt; strmat++) {
6946 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[strmat].inqueue, next, nctl) {
6947 if (SCTP_TSN_GT(ctl->sinfo_tsn, cumulative_tsn_p1)) {
6948 /* Yep it is above cum-ack */
6950 SCTP_CALC_TSN_TO_GAP(gap, ctl->sinfo_tsn, asoc->mapping_array_base_tsn);
6951 asoc->size_on_all_streams = sctp_sbspace_sub(asoc->size_on_all_streams, ctl->length);
6952 sctp_ucount_decr(asoc->cnt_on_all_streams);
6953 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6954 TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, ctl, next);
6956 sctp_m_freem(ctl->data);
6959 sctp_free_remote_addr(ctl->whoFrom);
6960 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
6961 SCTP_DECR_READQ_COUNT();
6966 /* We must back down to see what the new highest is */
6967 for (i = asoc->highest_tsn_inside_map; SCTP_TSN_GE(i, asoc->mapping_array_base_tsn); i--) {
6968 SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn);
6969 if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) {
6970 asoc->highest_tsn_inside_map = i;
6976 asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1;
6979 * Question, should we go through the delivery queue? The
6980 * only reason things are on here is the app not reading OR
6981 * a p-d-api up. An attacker COULD send enough in to
6982 * initiate the PD-API and then send a bunch of stuff to
6983 * other streams... these would wind up on the delivery
6984 * queue.. and then we would not get to them. But in order
6985 * to do this I then have to back-track and un-deliver
6986 * sequence numbers in streams.. el-yucko. I think for now
6987 * we will NOT look at the delivery queue and leave it to be
6988 * something to consider later. An alternative would be to
6989 * abort the P-D-API with a notification and then deliver
6990 * the data.... Or another method might be to keep track of
6991 * how many times the situation occurs and if we see a
6992 * possible attack underway just abort the association.
6995 SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt);
6998 * Now do we need to find a new
6999 * asoc->highest_tsn_inside_map?
7001 asoc->last_revoke_count = cnt;
7002 (void)SCTP_OS_TIMER_STOP(&stcb->asoc.dack_timer.timer);
7003 /* sa_ignore NO_NULL_CHK */
7004 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
7005 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED);
7006 reneged_asoc_ids[reneged_at] = sctp_get_associd(stcb);
7010 * Another issue, in un-setting the TSN's in the mapping array we
7011 * DID NOT adjust the highest_tsn marker. This will cause one of
7012 * two things to occur. It may cause us to do extra work in checking
7013 * for our mapping array movement. More importantly it may cause us
7014 * to SACK every datagram. This may not be a bad thing though since
7015 * we will recover once we get our cum-ack above and all this stuff
7016 * we dumped recovered.
7024 * We must walk the PCB lists for ALL associations here. The system
7025 * is LOW on MBUF's and needs help. This is where reneging will
7026 * occur. We really hope this does NOT happen!
7028 VNET_ITERATOR_DECL(vnet_iter);
7029 VNET_LIST_RLOCK_NOSLEEP();
7030 VNET_FOREACH(vnet_iter) {
7031 CURVNET_SET(vnet_iter);
7032 struct sctp_inpcb *inp;
7033 struct sctp_tcb *stcb;
7035 SCTP_STAT_INCR(sctps_protocol_drain_calls);
7036 if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
7043 SCTP_INP_INFO_RLOCK();
7044 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
7045 /* For each endpoint */
7046 SCTP_INP_RLOCK(inp);
7047 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
7048 /* For each association */
7049 SCTP_TCB_LOCK(stcb);
7050 sctp_drain_mbufs(inp, stcb);
7051 SCTP_TCB_UNLOCK(stcb);
7053 SCTP_INP_RUNLOCK(inp);
7055 SCTP_INP_INFO_RUNLOCK();
7058 VNET_LIST_RUNLOCK_NOSLEEP();
7062 * start a new iterator
7063 * iterates through all endpoints and associations based on the pcb_state
7064 * flags and asoc_state. "af" (mandatory) is executed for all matching
7065 * assocs and "ef" (optional) is executed when the iterator completes.
7066 * "inpf" (optional) is executed for each new endpoint as it is being
7067 * iterated through. inpe (optional) is called when the inp completes
7068 * its way through all the stcbs.
7071 sctp_initiate_iterator(inp_func inpf,
7075 uint32_t pcb_features,
7076 uint32_t asoc_state,
7080 struct sctp_inpcb *s_inp,
7081 uint8_t chunk_output_off)
7083 struct sctp_iterator *it = NULL;
7088 SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator),
7091 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
7094 memset(it, 0, sizeof(*it));
7095 it->function_assoc = af;
7096 it->function_inp = inpf;
7098 it->done_current_ep = 0;
7100 it->done_current_ep = 1;
7101 it->function_atend = ef;
7104 it->pcb_flags = pcb_state;
7105 it->pcb_features = pcb_features;
7106 it->asoc_state = asoc_state;
7107 it->function_inp_end = inpe;
7108 it->no_chunk_output = chunk_output_off;
7111 /* Assume lock is held here */
7113 SCTP_INP_INCR_REF(it->inp);
7114 it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP;
7116 SCTP_INP_INFO_RLOCK();
7117 it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead));
7119 SCTP_INP_INCR_REF(it->inp);
7121 SCTP_INP_INFO_RUNLOCK();
7122 it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP;
7125 SCTP_IPI_ITERATOR_WQ_LOCK();
7127 TAILQ_INSERT_TAIL(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
7128 if (sctp_it_ctl.iterator_running == 0) {
7129 sctp_wakeup_iterator();
7131 SCTP_IPI_ITERATOR_WQ_UNLOCK();
7132 /* sa_ignore MEMLEAK {memory is put on the tailq for the iterator} */