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 snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", if_name);
564 snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", "unknown");
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.
771 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) == 0) {
772 /* They match its a correct delete */
777 /* last ditch check ifn_index */
778 if (ifn_index == sctp_ifap->ifn_p->ifn_index) {
783 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s does not match addresses\n",
784 ifn_index, ((if_name == NULL) ? "NULL" : if_name));
785 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s - ignoring delete\n",
786 sctp_ifap->ifn_p->ifn_index, sctp_ifap->ifn_p->ifn_name);
787 SCTP_IPI_ADDR_WUNLOCK();
791 SCTPDBG(SCTP_DEBUG_PCB4, "Deleting ifa %p\n", sctp_ifap);
792 sctp_ifap->localifa_flags &= SCTP_ADDR_VALID;
793 sctp_ifap->localifa_flags |= SCTP_BEING_DELETED;
794 vrf->total_ifa_count--;
795 LIST_REMOVE(sctp_ifap, next_bucket);
796 sctp_remove_ifa_from_ifn(sctp_ifap);
800 SCTPDBG(SCTP_DEBUG_PCB4, "Del Addr-ifn:%d Could not find address:",
802 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
807 SCTP_IPI_ADDR_WUNLOCK();
809 struct sctp_laddr *wi;
811 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
814 * Gak, what can we do? We have lost an address
815 * change can you say HOSED?
817 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
819 /* Oops, must decrement the count */
820 sctp_free_ifa(sctp_ifap);
823 SCTP_INCR_LADDR_COUNT();
824 bzero(wi, sizeof(*wi));
825 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
827 wi->action = SCTP_DEL_IP_ADDRESS;
830 * Should this really be a tailq? As it is we will process
831 * the newest first :-0
833 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
834 SCTP_WQ_ADDR_UNLOCK();
836 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
837 (struct sctp_inpcb *)NULL,
838 (struct sctp_tcb *)NULL,
839 (struct sctp_nets *)NULL);
845 static struct sctp_tcb *
846 sctp_tcb_special_locate(struct sctp_inpcb **inp_p, struct sockaddr *from,
847 struct sockaddr *to, struct sctp_nets **netp, uint32_t vrf_id)
849 /**** ASSUMES THE CALLER holds the INP_INFO_RLOCK */
851 * If we support the TCP model, then we must now dig through to see
852 * if we can find our endpoint in the list of tcp ep's.
854 uint16_t lport, rport;
855 struct sctppcbhead *ephead;
856 struct sctp_inpcb *inp;
857 struct sctp_laddr *laddr;
858 struct sctp_tcb *stcb;
859 struct sctp_nets *net;
861 if ((to == NULL) || (from == NULL)) {
864 switch (to->sa_family) {
867 if (from->sa_family == AF_INET) {
868 lport = ((struct sockaddr_in *)to)->sin_port;
869 rport = ((struct sockaddr_in *)from)->sin_port;
877 if (from->sa_family == AF_INET6) {
878 lport = ((struct sockaddr_in6 *)to)->sin6_port;
879 rport = ((struct sockaddr_in6 *)from)->sin6_port;
888 ephead = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
890 * Ok now for each of the guys in this bucket we must look and see:
891 * - Does the remote port match. - Does there single association's
892 * addresses match this address (to). If so we update p_ep to point
893 * to this ep and return the tcb from it.
895 LIST_FOREACH(inp, ephead, sctp_hash) {
897 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
898 SCTP_INP_RUNLOCK(inp);
901 if (lport != inp->sctp_lport) {
902 SCTP_INP_RUNLOCK(inp);
905 if (inp->def_vrf_id != vrf_id) {
906 SCTP_INP_RUNLOCK(inp);
909 /* check to see if the ep has one of the addresses */
910 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
911 /* We are NOT bound all, so look further */
914 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
916 if (laddr->ifa == NULL) {
917 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n", __FUNCTION__);
920 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
921 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
924 if (laddr->ifa->address.sa.sa_family ==
926 /* see if it matches */
929 if (from->sa_family == AF_INET) {
930 struct sockaddr_in *intf_addr,
933 intf_addr = &laddr->ifa->address.sin;
934 sin = (struct sockaddr_in *)to;
935 if (sin->sin_addr.s_addr ==
936 intf_addr->sin_addr.s_addr) {
943 if (from->sa_family == AF_INET6) {
944 struct sockaddr_in6 *intf_addr6;
945 struct sockaddr_in6 *sin6;
947 sin6 = (struct sockaddr_in6 *)
949 intf_addr6 = &laddr->ifa->address.sin6;
951 if (SCTP6_ARE_ADDR_EQUAL(sin6,
961 /* This endpoint does not have this address */
962 SCTP_INP_RUNLOCK(inp);
967 * Ok if we hit here the ep has the address, does it hold
971 stcb = LIST_FIRST(&inp->sctp_asoc_list);
973 SCTP_INP_RUNLOCK(inp);
977 if (stcb->rport != rport) {
978 /* remote port does not match. */
979 SCTP_TCB_UNLOCK(stcb);
980 SCTP_INP_RUNLOCK(inp);
983 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
984 SCTP_TCB_UNLOCK(stcb);
985 SCTP_INP_RUNLOCK(inp);
988 /* Does this TCB have a matching address? */
989 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
991 if (net->ro._l_addr.sa.sa_family != from->sa_family) {
992 /* not the same family, can't be a match */
995 switch (from->sa_family) {
999 struct sockaddr_in *sin, *rsin;
1001 sin = (struct sockaddr_in *)&net->ro._l_addr;
1002 rsin = (struct sockaddr_in *)from;
1003 if (sin->sin_addr.s_addr ==
1004 rsin->sin_addr.s_addr) {
1010 * Update the endpoint
1014 SCTP_INP_RUNLOCK(inp);
1023 struct sockaddr_in6 *sin6, *rsin6;
1025 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1026 rsin6 = (struct sockaddr_in6 *)from;
1027 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1034 * Update the endpoint
1038 SCTP_INP_RUNLOCK(inp);
1049 SCTP_TCB_UNLOCK(stcb);
1050 SCTP_INP_RUNLOCK(inp);
1056 sctp_does_stcb_own_this_addr(struct sctp_tcb *stcb, struct sockaddr *to)
1058 int loopback_scope, ipv4_local_scope, local_scope, site_scope;
1059 int ipv4_addr_legal, ipv6_addr_legal;
1060 struct sctp_vrf *vrf;
1061 struct sctp_ifn *sctp_ifn;
1062 struct sctp_ifa *sctp_ifa;
1064 loopback_scope = stcb->asoc.loopback_scope;
1065 ipv4_local_scope = stcb->asoc.ipv4_local_scope;
1066 local_scope = stcb->asoc.local_scope;
1067 site_scope = stcb->asoc.site_scope;
1068 ipv4_addr_legal = ipv6_addr_legal = 0;
1069 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1070 ipv6_addr_legal = 1;
1071 if (SCTP_IPV6_V6ONLY(stcb->sctp_ep) == 0) {
1072 ipv4_addr_legal = 1;
1075 ipv4_addr_legal = 1;
1078 SCTP_IPI_ADDR_RLOCK();
1079 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
1081 /* no vrf, no addresses */
1082 SCTP_IPI_ADDR_RUNLOCK();
1085 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1086 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
1087 if ((loopback_scope == 0) &&
1088 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
1091 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
1092 if (sctp_is_addr_restricted(stcb, sctp_ifa) &&
1093 (!sctp_is_addr_pending(stcb, sctp_ifa))) {
1095 * We allow pending addresses, where
1096 * we have sent an asconf-add to be
1101 switch (sctp_ifa->address.sa.sa_family) {
1104 if (ipv4_addr_legal) {
1105 struct sockaddr_in *sin,
1108 sin = &sctp_ifa->address.sin;
1109 rsin = (struct sockaddr_in *)to;
1110 if ((ipv4_local_scope == 0) &&
1111 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
1114 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
1115 SCTP_IPI_ADDR_RUNLOCK();
1123 if (ipv6_addr_legal) {
1124 struct sockaddr_in6 *sin6,
1127 sin6 = &sctp_ifa->address.sin6;
1128 rsin6 = (struct sockaddr_in6 *)to;
1129 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
1130 if (local_scope == 0)
1132 if (sin6->sin6_scope_id == 0) {
1133 if (sa6_recoverscope(sin6) != 0)
1137 if ((site_scope == 0) &&
1138 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
1141 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
1142 SCTP_IPI_ADDR_RUNLOCK();
1155 struct sctp_laddr *laddr;
1157 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
1158 if (sctp_is_addr_restricted(stcb, laddr->ifa) &&
1159 (!sctp_is_addr_pending(stcb, laddr->ifa))) {
1161 * We allow pending addresses, where we have
1162 * sent an asconf-add to be considered
1167 if (laddr->ifa->address.sa.sa_family != to->sa_family) {
1170 switch (to->sa_family) {
1174 struct sockaddr_in *sin, *rsin;
1176 sin = (struct sockaddr_in *)&laddr->ifa->address.sin;
1177 rsin = (struct sockaddr_in *)to;
1178 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
1179 SCTP_IPI_ADDR_RUNLOCK();
1188 struct sockaddr_in6 *sin6, *rsin6;
1190 sin6 = (struct sockaddr_in6 *)&laddr->ifa->address.sin6;
1191 rsin6 = (struct sockaddr_in6 *)to;
1192 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
1193 SCTP_IPI_ADDR_RUNLOCK();
1207 SCTP_IPI_ADDR_RUNLOCK();
1214 * 1) If I return a NULL you must decrement any INP ref cnt. 2) If I find an
1215 * stcb, both will be locked (locked_tcb and stcb) but decrement will be done
1216 * (if locked == NULL). 3) Decrement happens on return ONLY if locked ==
1221 sctp_findassociation_ep_addr(struct sctp_inpcb **inp_p, struct sockaddr *remote,
1222 struct sctp_nets **netp, struct sockaddr *local, struct sctp_tcb *locked_tcb)
1224 struct sctpasochead *head;
1225 struct sctp_inpcb *inp;
1226 struct sctp_tcb *stcb = NULL;
1227 struct sctp_nets *net;
1231 if (remote->sa_family == AF_INET) {
1232 rport = (((struct sockaddr_in *)remote)->sin_port);
1233 } else if (remote->sa_family == AF_INET6) {
1234 rport = (((struct sockaddr_in6 *)remote)->sin6_port);
1240 * UN-lock so we can do proper locking here this occurs when
1241 * called from load_addresses_from_init.
1243 atomic_add_int(&locked_tcb->asoc.refcnt, 1);
1244 SCTP_TCB_UNLOCK(locked_tcb);
1246 SCTP_INP_INFO_RLOCK();
1247 if (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
1249 * Now either this guy is our listener or it's the
1250 * connector. If it is the one that issued the connect, then
1251 * it's only chance is to be the first TCB in the list. If
1252 * it is the acceptor, then do the special_lookup to hash
1253 * and find the real inp.
1255 if ((inp->sctp_socket) && (inp->sctp_socket->so_qlimit)) {
1256 /* to is peer addr, from is my addr */
1257 stcb = sctp_tcb_special_locate(inp_p, remote, local,
1258 netp, inp->def_vrf_id);
1259 if ((stcb != NULL) && (locked_tcb == NULL)) {
1260 /* we have a locked tcb, lower refcount */
1261 SCTP_INP_DECR_REF(inp);
1263 if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
1264 SCTP_INP_RLOCK(locked_tcb->sctp_ep);
1265 SCTP_TCB_LOCK(locked_tcb);
1266 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1267 SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
1269 SCTP_INP_INFO_RUNLOCK();
1272 SCTP_INP_WLOCK(inp);
1273 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1276 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1280 SCTP_TCB_LOCK(stcb);
1282 if (stcb->rport != rport) {
1283 /* remote port does not match. */
1284 SCTP_TCB_UNLOCK(stcb);
1287 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1288 SCTP_TCB_UNLOCK(stcb);
1291 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1292 SCTP_TCB_UNLOCK(stcb);
1295 /* now look at the list of remote addresses */
1296 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1298 if (net == (TAILQ_NEXT(net, sctp_next))) {
1299 panic("Corrupt net list");
1302 if (net->ro._l_addr.sa.sa_family !=
1303 remote->sa_family) {
1304 /* not the same family */
1307 switch (remote->sa_family) {
1311 struct sockaddr_in *sin,
1314 sin = (struct sockaddr_in *)
1316 rsin = (struct sockaddr_in *)remote;
1317 if (sin->sin_addr.s_addr ==
1318 rsin->sin_addr.s_addr) {
1323 if (locked_tcb == NULL) {
1324 SCTP_INP_DECR_REF(inp);
1325 } else if (locked_tcb != stcb) {
1326 SCTP_TCB_LOCK(locked_tcb);
1329 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1331 SCTP_INP_WUNLOCK(inp);
1332 SCTP_INP_INFO_RUNLOCK();
1341 struct sockaddr_in6 *sin6,
1344 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1345 rsin6 = (struct sockaddr_in6 *)remote;
1346 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1352 if (locked_tcb == NULL) {
1353 SCTP_INP_DECR_REF(inp);
1354 } else if (locked_tcb != stcb) {
1355 SCTP_TCB_LOCK(locked_tcb);
1358 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1360 SCTP_INP_WUNLOCK(inp);
1361 SCTP_INP_INFO_RUNLOCK();
1372 SCTP_TCB_UNLOCK(stcb);
1375 SCTP_INP_WLOCK(inp);
1376 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1379 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport,
1380 inp->sctp_hashmark)];
1384 LIST_FOREACH(stcb, head, sctp_tcbhash) {
1385 if (stcb->rport != rport) {
1386 /* remote port does not match */
1389 SCTP_TCB_LOCK(stcb);
1390 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1391 SCTP_TCB_UNLOCK(stcb);
1394 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1395 SCTP_TCB_UNLOCK(stcb);
1398 /* now look at the list of remote addresses */
1399 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1401 if (net == (TAILQ_NEXT(net, sctp_next))) {
1402 panic("Corrupt net list");
1405 if (net->ro._l_addr.sa.sa_family !=
1406 remote->sa_family) {
1407 /* not the same family */
1410 switch (remote->sa_family) {
1414 struct sockaddr_in *sin,
1417 sin = (struct sockaddr_in *)
1419 rsin = (struct sockaddr_in *)remote;
1420 if (sin->sin_addr.s_addr ==
1421 rsin->sin_addr.s_addr) {
1426 if (locked_tcb == NULL) {
1427 SCTP_INP_DECR_REF(inp);
1428 } else if (locked_tcb != stcb) {
1429 SCTP_TCB_LOCK(locked_tcb);
1432 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1434 SCTP_INP_WUNLOCK(inp);
1435 SCTP_INP_INFO_RUNLOCK();
1444 struct sockaddr_in6 *sin6,
1447 sin6 = (struct sockaddr_in6 *)
1449 rsin6 = (struct sockaddr_in6 *)remote;
1450 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1456 if (locked_tcb == NULL) {
1457 SCTP_INP_DECR_REF(inp);
1458 } else if (locked_tcb != stcb) {
1459 SCTP_TCB_LOCK(locked_tcb);
1462 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1464 SCTP_INP_WUNLOCK(inp);
1465 SCTP_INP_INFO_RUNLOCK();
1476 SCTP_TCB_UNLOCK(stcb);
1480 /* clean up for returning null */
1482 SCTP_TCB_LOCK(locked_tcb);
1483 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1485 SCTP_INP_WUNLOCK(inp);
1486 SCTP_INP_INFO_RUNLOCK();
1492 * Find an association for a specific endpoint using the association id given
1493 * out in the COMM_UP notification
1497 sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1500 * Use my the assoc_id to find a endpoint
1502 struct sctpasochead *head;
1503 struct sctp_tcb *stcb;
1507 SCTP_PRINTF("TSNH ep_associd\n");
1510 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1511 SCTP_PRINTF("TSNH ep_associd0\n");
1514 id = (uint32_t) asoc_id;
1515 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
1517 /* invalid id TSNH */
1518 SCTP_PRINTF("TSNH ep_associd1\n");
1521 LIST_FOREACH(stcb, head, sctp_tcbasocidhash) {
1522 if (stcb->asoc.assoc_id == id) {
1523 if (inp != stcb->sctp_ep) {
1525 * some other guy has the same id active (id
1528 SCTP_PRINTF("TSNH ep_associd2\n");
1531 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1535 SCTP_TCB_LOCK(stcb);
1545 sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1547 struct sctp_tcb *stcb;
1549 SCTP_INP_RLOCK(inp);
1550 stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
1551 SCTP_INP_RUNLOCK(inp);
1556 static struct sctp_inpcb *
1557 sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head,
1558 uint16_t lport, uint32_t vrf_id)
1560 struct sctp_inpcb *inp;
1561 struct sctp_laddr *laddr;
1564 struct sockaddr_in *sin;
1568 struct sockaddr_in6 *sin6;
1569 struct sockaddr_in6 *intf_addr6;
1576 * Endpoint probe expects that the INP_INFO is locked.
1584 switch (nam->sa_family) {
1587 sin = (struct sockaddr_in *)nam;
1592 sin6 = (struct sockaddr_in6 *)nam;
1596 /* unsupported family */
1603 LIST_FOREACH(inp, head, sctp_hash) {
1604 SCTP_INP_RLOCK(inp);
1605 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1606 SCTP_INP_RUNLOCK(inp);
1609 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) &&
1610 (inp->sctp_lport == lport)) {
1613 if ((nam->sa_family == AF_INET) &&
1614 (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1615 SCTP_IPV6_V6ONLY(inp)) {
1616 /* IPv4 on a IPv6 socket with ONLY IPv6 set */
1617 SCTP_INP_RUNLOCK(inp);
1622 /* A V6 address and the endpoint is NOT bound V6 */
1623 if (nam->sa_family == AF_INET6 &&
1624 (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
1625 SCTP_INP_RUNLOCK(inp);
1629 /* does a VRF id match? */
1631 if (inp->def_vrf_id == vrf_id)
1634 SCTP_INP_RUNLOCK(inp);
1639 SCTP_INP_RUNLOCK(inp);
1641 switch (nam->sa_family) {
1644 if (sin->sin_addr.s_addr == INADDR_ANY) {
1645 /* Can't hunt for one that has no address specified */
1652 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1653 /* Can't hunt for one that has no address specified */
1662 * ok, not bound to all so see if we can find a EP bound to this
1665 LIST_FOREACH(inp, head, sctp_hash) {
1666 SCTP_INP_RLOCK(inp);
1667 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1668 SCTP_INP_RUNLOCK(inp);
1671 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
1672 SCTP_INP_RUNLOCK(inp);
1676 * Ok this could be a likely candidate, look at all of its
1679 if (inp->sctp_lport != lport) {
1680 SCTP_INP_RUNLOCK(inp);
1683 /* does a VRF id match? */
1685 if (inp->def_vrf_id == vrf_id)
1689 SCTP_INP_RUNLOCK(inp);
1692 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1693 if (laddr->ifa == NULL) {
1694 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
1698 SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ",
1700 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1701 SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n");
1704 if (laddr->ifa->address.sa.sa_family == nam->sa_family) {
1705 /* possible, see if it matches */
1706 switch (nam->sa_family) {
1709 if (sin->sin_addr.s_addr ==
1710 laddr->ifa->address.sin.sin_addr.s_addr) {
1711 SCTP_INP_RUNLOCK(inp);
1718 intf_addr6 = &laddr->ifa->address.sin6;
1719 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1721 SCTP_INP_RUNLOCK(inp);
1729 SCTP_INP_RUNLOCK(inp);
1735 static struct sctp_inpcb *
1736 sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
1738 struct sctppcbhead *head;
1739 struct sctp_inpcb *t_inp;
1742 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1743 SCTP_BASE_INFO(hashmark))];
1744 LIST_FOREACH(t_inp, head, sctp_hash) {
1745 if (t_inp->sctp_lport != lport) {
1748 /* is it in the VRF in question */
1750 if (t_inp->def_vrf_id == vrf_id)
1755 /* This one is in use. */
1756 /* check the v6/v4 binding issue */
1757 if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1758 SCTP_IPV6_V6ONLY(t_inp)) {
1759 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1760 /* collision in V6 space */
1763 /* inp is BOUND_V4 no conflict */
1766 } else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1767 /* t_inp is bound v4 and v6, conflict always */
1770 /* t_inp is bound only V4 */
1771 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1772 SCTP_IPV6_V6ONLY(inp)) {
1776 /* else fall through to conflict */
1785 sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
1787 /* For 1-2-1 with port reuse */
1788 struct sctppcbhead *head;
1789 struct sctp_inpcb *tinp;
1791 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
1792 /* only works with port reuse on */
1795 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) {
1798 SCTP_INP_RUNLOCK(inp);
1799 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport,
1800 SCTP_BASE_INFO(hashmark))];
1801 /* Kick out all non-listeners to the TCP hash */
1802 LIST_FOREACH(tinp, head, sctp_hash) {
1803 if (tinp->sctp_lport != inp->sctp_lport) {
1806 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1809 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
1812 if (tinp->sctp_socket->so_qlimit) {
1815 SCTP_INP_WLOCK(tinp);
1816 LIST_REMOVE(tinp, sctp_hash);
1817 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))];
1818 tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
1819 LIST_INSERT_HEAD(head, tinp, sctp_hash);
1820 SCTP_INP_WUNLOCK(tinp);
1822 SCTP_INP_WLOCK(inp);
1823 /* Pull from where he was */
1824 LIST_REMOVE(inp, sctp_hash);
1825 inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL;
1826 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))];
1827 LIST_INSERT_HEAD(head, inp, sctp_hash);
1828 SCTP_INP_WUNLOCK(inp);
1829 SCTP_INP_RLOCK(inp);
1835 sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock,
1839 * First we check the hash table to see if someone has this port
1840 * bound with just the port.
1842 struct sctp_inpcb *inp;
1843 struct sctppcbhead *head;
1848 struct sockaddr_in *sin;
1852 struct sockaddr_in6 *sin6;
1856 switch (nam->sa_family) {
1859 sin = (struct sockaddr_in *)nam;
1860 lport = ((struct sockaddr_in *)nam)->sin_port;
1865 sin6 = (struct sockaddr_in6 *)nam;
1866 lport = ((struct sockaddr_in6 *)nam)->sin6_port;
1873 * I could cheat here and just cast to one of the types but we will
1874 * do it right. It also provides the check against an Unsupported
1877 /* Find the head of the ALLADDR chain */
1878 if (have_lock == 0) {
1879 SCTP_INP_INFO_RLOCK();
1881 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1882 SCTP_BASE_INFO(hashmark))];
1883 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1886 * If the TCP model exists it could be that the main listening
1887 * endpoint is gone but there still exists a connected socket for
1888 * this guy. If so we can return the first one that we find. This
1889 * may NOT be the correct one so the caller should be wary on the
1890 * returned INP. Currently the only caller that sets find_tcp_pool
1891 * is in bindx where we are verifying that a user CAN bind the
1892 * address. He either has bound it already, or someone else has, or
1893 * its open to bind, so this is good enough.
1895 if (inp == NULL && find_tcp_pool) {
1896 for (i = 0; i < SCTP_BASE_INFO(hashtcpmark) + 1; i++) {
1897 head = &SCTP_BASE_INFO(sctp_tcpephash)[i];
1898 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1905 SCTP_INP_INCR_REF(inp);
1907 if (have_lock == 0) {
1908 SCTP_INP_INFO_RUNLOCK();
1914 * Find an association for an endpoint with the pointer to whom you want to
1915 * send to and the endpoint pointer. The address can be IPv4 or IPv6. We may
1916 * need to change the *to to some other struct like a mbuf...
1919 sctp_findassociation_addr_sa(struct sockaddr *to, struct sockaddr *from,
1920 struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool,
1923 struct sctp_inpcb *inp = NULL;
1924 struct sctp_tcb *retval;
1926 SCTP_INP_INFO_RLOCK();
1927 if (find_tcp_pool) {
1928 if (inp_p != NULL) {
1929 retval = sctp_tcb_special_locate(inp_p, from, to, netp,
1932 retval = sctp_tcb_special_locate(&inp, from, to, netp,
1935 if (retval != NULL) {
1936 SCTP_INP_INFO_RUNLOCK();
1940 inp = sctp_pcb_findep(to, 0, 1, vrf_id);
1941 if (inp_p != NULL) {
1944 SCTP_INP_INFO_RUNLOCK();
1950 * ok, we have an endpoint, now lets find the assoc for it (if any)
1951 * we now place the source address or from in the to of the find
1952 * endpoint call. Since in reality this chain is used from the
1953 * inbound packet side.
1955 if (inp_p != NULL) {
1956 retval = sctp_findassociation_ep_addr(inp_p, from, netp, to,
1959 retval = sctp_findassociation_ep_addr(&inp, from, netp, to,
1967 * This routine will grub through the mbuf that is a INIT or INIT-ACK and
1968 * find all addresses that the sender has specified in any address list. Each
1969 * address will be used to lookup the TCB and see if one exits.
1971 static struct sctp_tcb *
1972 sctp_findassociation_special_addr(struct mbuf *m, int iphlen, int offset,
1973 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp,
1974 struct sockaddr *dest)
1976 struct sctp_paramhdr *phdr, parm_buf;
1977 struct sctp_tcb *retval;
1978 uint32_t ptype, plen;
1981 struct sockaddr_in sin4;
1985 struct sockaddr_in6 sin6;
1990 memset(&sin4, 0, sizeof(sin4));
1991 sin4.sin_len = sizeof(sin4);
1992 sin4.sin_family = AF_INET;
1993 sin4.sin_port = sh->src_port;
1996 memset(&sin6, 0, sizeof(sin6));
1997 sin6.sin6_len = sizeof(sin6);
1998 sin6.sin6_family = AF_INET6;
1999 sin6.sin6_port = sh->src_port;
2003 offset += sizeof(struct sctp_init_chunk);
2005 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
2006 while (phdr != NULL) {
2007 /* now we must see if we want the parameter */
2008 ptype = ntohs(phdr->param_type);
2009 plen = ntohs(phdr->param_length);
2014 if (ptype == SCTP_IPV4_ADDRESS &&
2015 plen == sizeof(struct sctp_ipv4addr_param)) {
2016 /* Get the rest of the address */
2017 struct sctp_ipv4addr_param ip4_parm, *p4;
2019 phdr = sctp_get_next_param(m, offset,
2020 (struct sctp_paramhdr *)&ip4_parm, min(plen, sizeof(ip4_parm)));
2024 p4 = (struct sctp_ipv4addr_param *)phdr;
2025 memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr));
2027 retval = sctp_findassociation_ep_addr(inp_p,
2028 (struct sockaddr *)&sin4, netp, dest, NULL);
2029 if (retval != NULL) {
2035 if (ptype == SCTP_IPV6_ADDRESS &&
2036 plen == sizeof(struct sctp_ipv6addr_param)) {
2037 /* Get the rest of the address */
2038 struct sctp_ipv6addr_param ip6_parm, *p6;
2040 phdr = sctp_get_next_param(m, offset,
2041 (struct sctp_paramhdr *)&ip6_parm, min(plen, sizeof(ip6_parm)));
2045 p6 = (struct sctp_ipv6addr_param *)phdr;
2046 memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr));
2048 retval = sctp_findassociation_ep_addr(inp_p,
2049 (struct sockaddr *)&sin6, netp, dest, NULL);
2050 if (retval != NULL) {
2055 offset += SCTP_SIZE32(plen);
2056 phdr = sctp_get_next_param(m, offset, &parm_buf,
2062 static struct sctp_tcb *
2063 sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag,
2064 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport,
2065 uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
2068 * Use my vtag to hash. If we find it we then verify the source addr
2069 * is in the assoc. If all goes well we save a bit on rec of a
2072 struct sctpasochead *head;
2073 struct sctp_nets *net;
2074 struct sctp_tcb *stcb;
2078 SCTP_INP_INFO_RLOCK();
2079 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag,
2080 SCTP_BASE_INFO(hashasocmark))];
2083 SCTP_INP_INFO_RUNLOCK();
2086 LIST_FOREACH(stcb, head, sctp_asocs) {
2087 SCTP_INP_RLOCK(stcb->sctp_ep);
2088 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
2089 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2092 SCTP_TCB_LOCK(stcb);
2093 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2094 if (stcb->asoc.my_vtag == vtag) {
2096 if (stcb->rport != rport) {
2097 SCTP_TCB_UNLOCK(stcb);
2100 if (stcb->sctp_ep->sctp_lport != lport) {
2101 SCTP_TCB_UNLOCK(stcb);
2104 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
2105 SCTP_TCB_UNLOCK(stcb);
2108 /* RRS:Need toaddr check here */
2109 if (sctp_does_stcb_own_this_addr(stcb, to) == 0) {
2110 /* Endpoint does not own this address */
2111 SCTP_TCB_UNLOCK(stcb);
2116 * If we have both vtags that's all we match
2119 if (stcb->asoc.peer_vtag == remote_tag) {
2121 * If both tags match we consider it
2122 * conclusive and check NO
2123 * source/destination addresses
2128 if (skip_src_check) {
2131 net = sctp_findnet(stcb, from);
2133 *netp = NULL; /* unknown */
2136 *inp_p = stcb->sctp_ep;
2137 SCTP_INP_INFO_RUNLOCK();
2140 net = sctp_findnet(stcb, from);
2144 SCTP_STAT_INCR(sctps_vtagexpress);
2145 *inp_p = stcb->sctp_ep;
2146 SCTP_INP_INFO_RUNLOCK();
2150 * not him, this should only happen in rare
2151 * cases so I peg it.
2153 SCTP_STAT_INCR(sctps_vtagbogus);
2156 SCTP_TCB_UNLOCK(stcb);
2158 SCTP_INP_INFO_RUNLOCK();
2163 * Find an association with the pointer to the inbound IP packet. This can be
2164 * a IPv4 or IPv6 packet.
2167 sctp_findassociation_addr(struct mbuf *m, int iphlen, int offset,
2168 struct sctphdr *sh, struct sctp_chunkhdr *ch,
2169 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2173 struct sctp_tcb *retval;
2174 struct sockaddr_storage to_store, from_store;
2175 struct sockaddr *to = (struct sockaddr *)&to_store;
2176 struct sockaddr *from = (struct sockaddr *)&from_store;
2177 struct sctp_inpcb *inp;
2179 iph = mtod(m, struct ip *);
2180 switch (iph->ip_v) {
2185 struct sockaddr_in *from4;
2187 from4 = (struct sockaddr_in *)&from_store;
2188 bzero(from4, sizeof(*from4));
2189 from4->sin_family = AF_INET;
2190 from4->sin_len = sizeof(struct sockaddr_in);
2191 from4->sin_addr.s_addr = iph->ip_src.s_addr;
2192 from4->sin_port = sh->src_port;
2197 case IPV6_VERSION >> 4:
2200 struct ip6_hdr *ip6;
2201 struct sockaddr_in6 *from6;
2203 ip6 = mtod(m, struct ip6_hdr *);
2204 from6 = (struct sockaddr_in6 *)&from_store;
2205 bzero(from6, sizeof(*from6));
2206 from6->sin6_family = AF_INET6;
2207 from6->sin6_len = sizeof(struct sockaddr_in6);
2208 from6->sin6_addr = ip6->ip6_src;
2209 from6->sin6_port = sh->src_port;
2210 /* Get the scopes in properly to the sin6 addr's */
2211 /* we probably don't need these operations */
2212 (void)sa6_recoverscope(from6);
2213 sa6_embedscope(from6, MODULE_GLOBAL(ip6_use_defzone));
2218 /* Currently not supported. */
2223 switch (iph->ip_v) {
2228 struct sockaddr_in *to4;
2230 to4 = (struct sockaddr_in *)&to_store;
2231 bzero(to4, sizeof(*to4));
2232 to4->sin_family = AF_INET;
2233 to4->sin_len = sizeof(struct sockaddr_in);
2234 to4->sin_addr.s_addr = iph->ip_dst.s_addr;
2235 to4->sin_port = sh->dest_port;
2240 case IPV6_VERSION >> 4:
2243 struct ip6_hdr *ip6;
2244 struct sockaddr_in6 *to6;
2246 ip6 = mtod(m, struct ip6_hdr *);
2247 to6 = (struct sockaddr_in6 *)&to_store;
2248 bzero(to6, sizeof(*to6));
2249 to6->sin6_family = AF_INET6;
2250 to6->sin6_len = sizeof(struct sockaddr_in6);
2251 to6->sin6_addr = ip6->ip6_dst;
2252 to6->sin6_port = sh->dest_port;
2253 /* Get the scopes in properly to the sin6 addr's */
2254 /* we probably don't need these operations */
2255 (void)sa6_recoverscope(to6);
2256 sa6_embedscope(to6, MODULE_GLOBAL(ip6_use_defzone));
2265 /* we only go down this path if vtag is non-zero */
2266 retval = sctp_findassoc_by_vtag(from, to, ntohl(sh->v_tag),
2267 inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0);
2273 if ((ch->chunk_type != SCTP_INITIATION) &&
2274 (ch->chunk_type != SCTP_INITIATION_ACK) &&
2275 (ch->chunk_type != SCTP_COOKIE_ACK) &&
2276 (ch->chunk_type != SCTP_COOKIE_ECHO)) {
2277 /* Other chunk types go to the tcp pool. */
2281 retval = sctp_findassociation_addr_sa(to, from, inp_p, netp,
2282 find_tcp_pool, vrf_id);
2285 retval = sctp_findassociation_addr_sa(to, from, &inp, netp,
2286 find_tcp_pool, vrf_id);
2288 SCTPDBG(SCTP_DEBUG_PCB1, "retval:%p inp:%p\n", retval, inp);
2289 if (retval == NULL && inp) {
2290 /* Found a EP but not this address */
2291 if ((ch->chunk_type == SCTP_INITIATION) ||
2292 (ch->chunk_type == SCTP_INITIATION_ACK)) {
2294 * special hook, we do NOT return linp or an
2295 * association that is linked to an existing
2296 * association that is under the TCP pool (i.e. no
2297 * listener exists). The endpoint finding routine
2298 * will always find a listener before examining the
2301 if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
2307 retval = sctp_findassociation_special_addr(m, iphlen,
2308 offset, sh, &inp, netp, to);
2309 if (inp_p != NULL) {
2314 SCTPDBG(SCTP_DEBUG_PCB1, "retval is %p\n", retval);
2319 * lookup an association by an ASCONF lookup address.
2320 * if the lookup address is 0.0.0.0 or ::0, use the vtag to do the lookup
2323 sctp_findassociation_ep_asconf(struct mbuf *m, int iphlen, int offset,
2324 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2326 struct sctp_tcb *stcb;
2327 struct sockaddr_storage local_store, remote_store;
2328 struct sockaddr *to;
2330 struct sctp_paramhdr parm_buf, *phdr;
2332 int zero_address = 0;
2335 struct sockaddr_in *sin;
2339 struct ip6_hdr *ip6;
2340 struct sockaddr_in6 *sin6;
2344 memset(&local_store, 0, sizeof(local_store));
2345 memset(&remote_store, 0, sizeof(remote_store));
2346 to = (struct sockaddr *)&local_store;
2347 /* First get the destination address setup too. */
2348 iph = mtod(m, struct ip *);
2349 switch (iph->ip_v) {
2353 sin = (struct sockaddr_in *)&local_store;
2354 sin->sin_family = AF_INET;
2355 sin->sin_len = sizeof(*sin);
2356 sin->sin_port = sh->dest_port;
2357 sin->sin_addr.s_addr = iph->ip_dst.s_addr;
2361 case IPV6_VERSION >> 4:
2363 ip6 = mtod(m, struct ip6_hdr *);
2364 sin6 = (struct sockaddr_in6 *)&local_store;
2365 sin6->sin6_family = AF_INET6;
2366 sin6->sin6_len = sizeof(*sin6);
2367 sin6->sin6_port = sh->dest_port;
2368 sin6->sin6_addr = ip6->ip6_dst;
2375 phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk),
2376 &parm_buf, sizeof(struct sctp_paramhdr));
2378 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n",
2382 ptype = (int)((uint32_t) ntohs(phdr->param_type));
2383 /* get the correlation address */
2386 case SCTP_IPV6_ADDRESS:
2388 /* ipv6 address param */
2389 struct sctp_ipv6addr_param *p6, p6_buf;
2391 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) {
2394 p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m,
2395 offset + sizeof(struct sctp_asconf_chunk),
2396 &p6_buf.ph, sizeof(*p6));
2398 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n",
2402 sin6 = (struct sockaddr_in6 *)&remote_store;
2403 sin6->sin6_family = AF_INET6;
2404 sin6->sin6_len = sizeof(*sin6);
2405 sin6->sin6_port = sh->src_port;
2406 memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr));
2407 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
2413 case SCTP_IPV4_ADDRESS:
2415 /* ipv4 address param */
2416 struct sctp_ipv4addr_param *p4, p4_buf;
2418 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) {
2421 p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m,
2422 offset + sizeof(struct sctp_asconf_chunk),
2423 &p4_buf.ph, sizeof(*p4));
2425 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n",
2429 sin = (struct sockaddr_in *)&remote_store;
2430 sin->sin_family = AF_INET;
2431 sin->sin_len = sizeof(*sin);
2432 sin->sin_port = sh->src_port;
2433 memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr));
2434 if (sin->sin_addr.s_addr == INADDR_ANY)
2440 /* invalid address param type */
2445 stcb = sctp_findassoc_by_vtag(NULL, to, ntohl(sh->v_tag), inp_p,
2446 netp, sh->src_port, sh->dest_port, 1, vrf_id, 0);
2448 * printf("findassociation_ep_asconf: zero lookup address
2449 * finds stcb 0x%x\n", (uint32_t)stcb);
2452 stcb = sctp_findassociation_ep_addr(inp_p,
2453 (struct sockaddr *)&remote_store, netp,
2461 * allocate a sctp_inpcb and setup a temporary binding to a port/all
2462 * addresses. This way if we don't get a bind we by default pick a ephemeral
2463 * port with all addresses bound.
2466 sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
2469 * we get called when a new endpoint starts up. We need to allocate
2470 * the sctp_inpcb structure from the zone and init it. Mark it as
2471 * unbound and find a port that we can use as an ephemeral with
2472 * INADDR_ANY. If the user binds later no problem we can then add in
2473 * the specific addresses. And setup the default parameters for the
2477 struct sctp_inpcb *inp;
2479 struct timeval time;
2480 sctp_sharedkey_t *null_key;
2484 SCTP_INP_INFO_WLOCK();
2485 inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb);
2487 SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n");
2488 SCTP_INP_INFO_WUNLOCK();
2489 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2493 bzero(inp, sizeof(*inp));
2495 /* bump generations */
2496 /* setup socket pointers */
2497 inp->sctp_socket = so;
2498 inp->ip_inp.inp.inp_socket = so;
2500 if (MODULE_GLOBAL(ip6_auto_flowlabel)) {
2501 inp->ip_inp.inp.inp_flags |= IN6P_AUTOFLOWLABEL;
2504 inp->sctp_associd_counter = 1;
2505 inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT;
2506 inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
2507 inp->sctp_cmt_on_off = SCTP_BASE_SYSCTL(sctp_cmt_on_off);
2508 inp->sctp_ecn_enable = SCTP_BASE_SYSCTL(sctp_ecn_enable);
2509 /* init the small hash table we use to track asocid <-> tcb */
2510 inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark);
2511 if (inp->sctp_asocidhash == NULL) {
2512 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2513 SCTP_INP_INFO_WUNLOCK();
2518 struct inpcbpolicy *pcb_sp = NULL;
2520 error = ipsec_init_policy(so, &pcb_sp);
2521 /* Arrange to share the policy */
2522 inp->ip_inp.inp.inp_sp = pcb_sp;
2523 ((struct in6pcb *)(&inp->ip_inp.inp))->in6p_sp = pcb_sp;
2526 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2527 SCTP_INP_INFO_WUNLOCK();
2531 SCTP_INCR_EP_COUNT();
2532 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
2533 SCTP_INP_INFO_WUNLOCK();
2535 so->so_pcb = (caddr_t)inp;
2537 if (SCTP_SO_TYPE(so) == SOCK_SEQPACKET) {
2538 /* UDP style socket */
2539 inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
2540 SCTP_PCB_FLAGS_UNBOUND);
2541 /* Be sure it is NON-BLOCKING IO for UDP */
2542 /* SCTP_SET_SO_NBIO(so); */
2543 } else if (SCTP_SO_TYPE(so) == SOCK_STREAM) {
2544 /* TCP style socket */
2545 inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
2546 SCTP_PCB_FLAGS_UNBOUND);
2547 /* Be sure we have blocking IO by default */
2548 SCTP_CLEAR_SO_NBIO(so);
2551 * unsupported socket type (RAW, etc)- in case we missed it
2554 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
2556 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2557 return (EOPNOTSUPP);
2559 if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) {
2560 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2561 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2562 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) {
2563 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2564 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2565 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) {
2566 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2567 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2569 inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize),
2570 &inp->sctp_hashmark);
2571 if (inp->sctp_tcbhash == NULL) {
2572 SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
2573 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2575 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2578 inp->def_vrf_id = vrf_id;
2580 SCTP_INP_INFO_WLOCK();
2581 SCTP_INP_LOCK_INIT(inp);
2582 INP_LOCK_INIT(&inp->ip_inp.inp, "inp", "sctpinp");
2583 SCTP_INP_READ_INIT(inp);
2584 SCTP_ASOC_CREATE_LOCK_INIT(inp);
2585 /* lock the new ep */
2586 SCTP_INP_WLOCK(inp);
2588 /* add it to the info area */
2589 LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list);
2590 SCTP_INP_INFO_WUNLOCK();
2592 TAILQ_INIT(&inp->read_queue);
2593 LIST_INIT(&inp->sctp_addr_list);
2595 LIST_INIT(&inp->sctp_asoc_list);
2597 #ifdef SCTP_TRACK_FREED_ASOCS
2599 LIST_INIT(&inp->sctp_asoc_free_list);
2601 /* Init the timer structure for signature change */
2602 SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer);
2603 inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE;
2605 /* now init the actual endpoint default data */
2608 /* setup the base timeout information */
2609 m->sctp_timeoutticks[SCTP_TIMER_SEND] = SEC_TO_TICKS(SCTP_SEND_SEC); /* needed ? */
2610 m->sctp_timeoutticks[SCTP_TIMER_INIT] = SEC_TO_TICKS(SCTP_INIT_SEC); /* needed ? */
2611 m->sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default));
2612 m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default));
2613 m->sctp_timeoutticks[SCTP_TIMER_PMTU] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default));
2614 m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default));
2615 m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default));
2616 /* all max/min max are in ms */
2617 m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default);
2618 m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default);
2619 m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default);
2620 m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default);
2621 m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default);
2623 m->max_open_streams_intome = MAX_SCTP_STREAMS;
2625 m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default);
2626 m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default);
2627 m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default);
2628 m->def_net_pf_threshold = SCTP_BASE_SYSCTL(sctp_path_pf_threshold);
2629 m->sctp_sws_sender = SCTP_SWS_SENDER_DEF;
2630 m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF;
2631 m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default);
2632 m->fr_max_burst = SCTP_BASE_SYSCTL(sctp_fr_max_burst_default);
2634 m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module);
2635 m->sctp_default_ss_module = SCTP_BASE_SYSCTL(sctp_default_ss_module);
2636 /* number of streams to pre-open on a association */
2637 m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default);
2639 /* Add adaptation cookie */
2640 m->adaptation_layer_indicator = 0x504C5253;
2642 /* seed random number generator */
2643 m->random_counter = 1;
2644 m->store_at = SCTP_SIGNATURE_SIZE;
2645 SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers));
2646 sctp_fill_random_store(m);
2648 /* Minimum cookie size */
2649 m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) +
2650 sizeof(struct sctp_state_cookie);
2651 m->size_of_a_cookie += SCTP_SIGNATURE_SIZE;
2653 /* Setup the initial secret */
2654 (void)SCTP_GETTIME_TIMEVAL(&time);
2655 m->time_of_secret_change = time.tv_sec;
2657 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
2658 m->secret_key[0][i] = sctp_select_initial_TSN(m);
2660 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
2662 /* How long is a cookie good for ? */
2663 m->def_cookie_life = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default));
2665 * Initialize authentication parameters
2667 m->local_hmacs = sctp_default_supported_hmaclist();
2668 m->local_auth_chunks = sctp_alloc_chunklist();
2669 m->default_dscp = 0;
2671 m->default_flowlabel = 0;
2673 sctp_auth_set_default_chunks(m->local_auth_chunks);
2674 LIST_INIT(&m->shared_keys);
2675 /* add default NULL key as key id 0 */
2676 null_key = sctp_alloc_sharedkey();
2677 sctp_insert_sharedkey(&m->shared_keys, null_key);
2678 SCTP_INP_WUNLOCK(inp);
2679 #ifdef SCTP_LOG_CLOSING
2680 sctp_log_closing(inp, NULL, 12);
2687 sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp,
2688 struct sctp_tcb *stcb)
2690 struct sctp_nets *net;
2691 uint16_t lport, rport;
2692 struct sctppcbhead *head;
2693 struct sctp_laddr *laddr, *oladdr;
2695 atomic_add_int(&stcb->asoc.refcnt, 1);
2696 SCTP_TCB_UNLOCK(stcb);
2697 SCTP_INP_INFO_WLOCK();
2698 SCTP_INP_WLOCK(old_inp);
2699 SCTP_INP_WLOCK(new_inp);
2700 SCTP_TCB_LOCK(stcb);
2701 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2703 new_inp->sctp_ep.time_of_secret_change =
2704 old_inp->sctp_ep.time_of_secret_change;
2705 memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key,
2706 sizeof(old_inp->sctp_ep.secret_key));
2707 new_inp->sctp_ep.current_secret_number =
2708 old_inp->sctp_ep.current_secret_number;
2709 new_inp->sctp_ep.last_secret_number =
2710 old_inp->sctp_ep.last_secret_number;
2711 new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie;
2713 /* make it so new data pours into the new socket */
2714 stcb->sctp_socket = new_inp->sctp_socket;
2715 stcb->sctp_ep = new_inp;
2717 /* Copy the port across */
2718 lport = new_inp->sctp_lport = old_inp->sctp_lport;
2719 rport = stcb->rport;
2720 /* Pull the tcb from the old association */
2721 LIST_REMOVE(stcb, sctp_tcbhash);
2722 LIST_REMOVE(stcb, sctp_tcblist);
2723 if (stcb->asoc.in_asocid_hash) {
2724 LIST_REMOVE(stcb, sctp_tcbasocidhash);
2726 /* Now insert the new_inp into the TCP connected hash */
2727 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
2729 LIST_INSERT_HEAD(head, new_inp, sctp_hash);
2730 /* Its safe to access */
2731 new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
2733 /* Now move the tcb into the endpoint list */
2734 LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist);
2736 * Question, do we even need to worry about the ep-hash since we
2737 * only have one connection? Probably not :> so lets get rid of it
2738 * and not suck up any kernel memory in that.
2740 if (stcb->asoc.in_asocid_hash) {
2741 struct sctpasochead *lhd;
2743 lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id,
2744 new_inp->hashasocidmark)];
2745 LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash);
2747 /* Ok. Let's restart timer. */
2748 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2749 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp,
2753 SCTP_INP_INFO_WUNLOCK();
2754 if (new_inp->sctp_tcbhash != NULL) {
2755 SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark);
2756 new_inp->sctp_tcbhash = NULL;
2758 if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2759 /* Subset bound, so copy in the laddr list from the old_inp */
2760 LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) {
2761 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2762 if (laddr == NULL) {
2764 * Gak, what can we do? This assoc is really
2765 * HOSED. We probably should send an abort
2768 SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n");
2771 SCTP_INCR_LADDR_COUNT();
2772 bzero(laddr, sizeof(*laddr));
2773 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2774 laddr->ifa = oladdr->ifa;
2775 atomic_add_int(&laddr->ifa->refcount, 1);
2776 LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr,
2778 new_inp->laddr_count++;
2779 if (oladdr == stcb->asoc.last_used_address) {
2780 stcb->asoc.last_used_address = laddr;
2785 * Now any running timers need to be adjusted since we really don't
2786 * care if they are running or not just blast in the new_inp into
2790 stcb->asoc.dack_timer.ep = (void *)new_inp;
2791 stcb->asoc.asconf_timer.ep = (void *)new_inp;
2792 stcb->asoc.strreset_timer.ep = (void *)new_inp;
2793 stcb->asoc.shut_guard_timer.ep = (void *)new_inp;
2794 stcb->asoc.autoclose_timer.ep = (void *)new_inp;
2795 stcb->asoc.delayed_event_timer.ep = (void *)new_inp;
2796 stcb->asoc.delete_prim_timer.ep = (void *)new_inp;
2797 /* now what about the nets? */
2798 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2799 net->pmtu_timer.ep = (void *)new_inp;
2800 net->hb_timer.ep = (void *)new_inp;
2801 net->rxt_timer.ep = (void *)new_inp;
2803 SCTP_INP_WUNLOCK(new_inp);
2804 SCTP_INP_WUNLOCK(old_inp);
2810 /* sctp_ifap is used to bypass normal local address validation checks */
2812 sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
2813 struct sctp_ifa *sctp_ifap, struct thread *p)
2815 /* bind a ep to a socket address */
2816 struct sctppcbhead *head;
2817 struct sctp_inpcb *inp, *inp_tmp;
2818 struct inpcb *ip_inp;
2819 int port_reuse_active = 0;
2828 inp = (struct sctp_inpcb *)so->so_pcb;
2829 ip_inp = (struct inpcb *)so->so_pcb;
2832 SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port:%d\n",
2833 ntohs(((struct sockaddr_in *)addr)->sin_port));
2834 SCTPDBG(SCTP_DEBUG_PCB1, "Addr :");
2835 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
2838 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2839 /* already did a bind, subsequent binds NOT allowed ! */
2840 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2845 panic("null proc/thread");
2848 switch (addr->sa_family) {
2852 struct sockaddr_in *sin;
2854 /* IPV6_V6ONLY socket? */
2855 if (SCTP_IPV6_V6ONLY(ip_inp)) {
2856 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2859 if (addr->sa_len != sizeof(*sin)) {
2860 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2863 sin = (struct sockaddr_in *)addr;
2864 lport = sin->sin_port;
2866 * For LOOPBACK the prison_local_ip4() call
2867 * will transmute the ip address to the
2870 if (p && (error = prison_local_ip4(p->td_ucred, &sin->sin_addr)) != 0) {
2871 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2874 if (sin->sin_addr.s_addr != INADDR_ANY) {
2884 * Only for pure IPv6 Address. (No IPv4
2887 struct sockaddr_in6 *sin6;
2889 sin6 = (struct sockaddr_in6 *)addr;
2891 if (addr->sa_len != sizeof(*sin6)) {
2892 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2895 lport = sin6->sin6_port;
2898 * For LOOPBACK the prison_local_ip6() call
2899 * will transmute the ipv6 address to the
2902 if (p && (error = prison_local_ip6(p->td_ucred, &sin6->sin6_addr,
2903 (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
2904 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2907 if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2909 /* KAME hack: embed scopeid */
2910 if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
2911 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2915 /* this must be cleared for ifa_ifwithaddr() */
2916 sin6->sin6_scope_id = 0;
2921 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EAFNOSUPPORT);
2922 return (EAFNOSUPPORT);
2925 SCTP_INP_INFO_WLOCK();
2926 SCTP_INP_WLOCK(inp);
2927 /* Setup a vrf_id to be the default for the non-bind-all case. */
2928 vrf_id = inp->def_vrf_id;
2930 /* increase our count due to the unlock we do */
2931 SCTP_INP_INCR_REF(inp);
2934 * Did the caller specify a port? if so we must see if a ep
2935 * already has this one bound.
2937 /* got to be root to get at low ports */
2938 if (ntohs(lport) < IPPORT_RESERVED) {
2940 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2942 SCTP_INP_DECR_REF(inp);
2943 SCTP_INP_WUNLOCK(inp);
2944 SCTP_INP_INFO_WUNLOCK();
2949 SCTP_INP_DECR_REF(inp);
2950 SCTP_INP_WUNLOCK(inp);
2951 SCTP_INP_INFO_WUNLOCK();
2952 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2955 SCTP_INP_WUNLOCK(inp);
2957 vrf_id = inp->def_vrf_id;
2958 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2959 if (inp_tmp != NULL) {
2961 * lock guy returned and lower count note
2962 * that we are not bound so inp_tmp should
2963 * NEVER be inp. And it is this inp
2964 * (inp_tmp) that gets the reference bump,
2965 * so we must lower it.
2967 SCTP_INP_DECR_REF(inp_tmp);
2969 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2970 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2972 * Ok, must be one-2-one and
2973 * allowing port re-use
2975 port_reuse_active = 1;
2976 goto continue_anyway;
2978 SCTP_INP_DECR_REF(inp);
2979 SCTP_INP_INFO_WUNLOCK();
2980 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2981 return (EADDRINUSE);
2984 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2985 if (inp_tmp != NULL) {
2987 * lock guy returned and lower count note
2988 * that we are not bound so inp_tmp should
2989 * NEVER be inp. And it is this inp
2990 * (inp_tmp) that gets the reference bump,
2991 * so we must lower it.
2993 SCTP_INP_DECR_REF(inp_tmp);
2995 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2996 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2998 * Ok, must be one-2-one and
2999 * allowing port re-use
3001 port_reuse_active = 1;
3002 goto continue_anyway;
3004 SCTP_INP_DECR_REF(inp);
3005 SCTP_INP_INFO_WUNLOCK();
3006 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3007 return (EADDRINUSE);
3011 SCTP_INP_WLOCK(inp);
3013 /* verify that no lport is not used by a singleton */
3014 if ((port_reuse_active == 0) &&
3015 (inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))
3017 /* Sorry someone already has this one bound */
3018 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
3019 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
3020 port_reuse_active = 1;
3022 SCTP_INP_DECR_REF(inp);
3023 SCTP_INP_WUNLOCK(inp);
3024 SCTP_INP_INFO_WUNLOCK();
3025 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3026 return (EADDRINUSE);
3031 uint16_t first, last, candidate;
3035 if (ip_inp->inp_flags & INP_HIGHPORT) {
3036 first = MODULE_GLOBAL(ipport_hifirstauto);
3037 last = MODULE_GLOBAL(ipport_hilastauto);
3038 } else if (ip_inp->inp_flags & INP_LOWPORT) {
3040 priv_check(p, PRIV_NETINET_RESERVEDPORT)
3042 SCTP_INP_DECR_REF(inp);
3043 SCTP_INP_WUNLOCK(inp);
3044 SCTP_INP_INFO_WUNLOCK();
3045 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
3048 first = MODULE_GLOBAL(ipport_lowfirstauto);
3049 last = MODULE_GLOBAL(ipport_lowlastauto);
3051 first = MODULE_GLOBAL(ipport_firstauto);
3052 last = MODULE_GLOBAL(ipport_lastauto);
3061 count = last - first + 1; /* number of candidates */
3062 candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count);
3066 if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) {
3071 SCTP_INP_DECR_REF(inp);
3072 SCTP_INP_WUNLOCK(inp);
3073 SCTP_INP_INFO_WUNLOCK();
3074 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3075 return (EADDRINUSE);
3077 if (candidate == last)
3080 candidate = candidate + 1;
3083 lport = htons(candidate);
3085 SCTP_INP_DECR_REF(inp);
3086 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE |
3087 SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
3089 * this really should not happen. The guy did a non-blocking
3090 * bind and then did a close at the same time.
3092 SCTP_INP_WUNLOCK(inp);
3093 SCTP_INP_INFO_WUNLOCK();
3094 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3097 /* ok we look clear to give out this port, so lets setup the binding */
3099 /* binding to all addresses, so just set in the proper flags */
3100 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL;
3101 /* set the automatic addr changes from kernel flag */
3102 if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) {
3103 sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3104 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3106 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3107 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3109 if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) {
3110 sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3112 sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3115 * set the automatic mobility_base from kernel flag (by
3118 if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) {
3119 sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE);
3120 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3122 sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE);
3123 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3126 * set the automatic mobility_fasthandoff from kernel flag
3129 if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) {
3130 sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF);
3131 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3133 sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF);
3134 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3138 * bind specific, make sure flags is off and add a new
3139 * address structure to the sctp_addr_list inside the ep
3142 * We will need to allocate one and insert it at the head. The
3143 * socketopt call can just insert new addresses in there as
3144 * well. It will also have to do the embed scope kame hack
3145 * too (before adding).
3147 struct sctp_ifa *ifa;
3148 struct sockaddr_storage store_sa;
3150 memset(&store_sa, 0, sizeof(store_sa));
3151 switch (addr->sa_family) {
3154 struct sockaddr_in *sin;
3156 sin = (struct sockaddr_in *)&store_sa;
3157 memcpy(sin, addr, sizeof(struct sockaddr_in));
3163 struct sockaddr_in6 *sin6;
3165 sin6 = (struct sockaddr_in6 *)&store_sa;
3166 memcpy(sin6, addr, sizeof(struct sockaddr_in6));
3167 sin6->sin6_port = 0;
3174 * first find the interface with the bound address need to
3175 * zero out the port to find the address! yuck! can't do
3176 * this earlier since need port for sctp_pcb_findep()
3178 if (sctp_ifap != NULL)
3182 * Note for BSD we hit here always other O/S's will
3183 * pass things in via the sctp_ifap argument
3186 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&store_sa,
3187 vrf_id, SCTP_ADDR_NOT_LOCKED);
3190 /* Can't find an interface with that address */
3191 SCTP_INP_WUNLOCK(inp);
3192 SCTP_INP_INFO_WUNLOCK();
3193 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRNOTAVAIL);
3194 return (EADDRNOTAVAIL);
3197 if (addr->sa_family == AF_INET6) {
3198 /* GAK, more FIXME IFA lock? */
3199 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
3200 /* Can't bind a non-existent addr. */
3201 SCTP_INP_WUNLOCK(inp);
3202 SCTP_INP_INFO_WUNLOCK();
3203 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3208 /* we're not bound all */
3209 inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL;
3210 /* allow bindx() to send ASCONF's for binding changes */
3211 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3212 /* clear automatic addr changes from kernel flag */
3213 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3215 /* add this address to the endpoint list */
3216 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0);
3218 SCTP_INP_WUNLOCK(inp);
3219 SCTP_INP_INFO_WUNLOCK();
3224 /* find the bucket */
3225 if (port_reuse_active) {
3226 /* Put it into tcp 1-2-1 hash */
3227 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))];
3228 inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
3230 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))];
3232 /* put it in the bucket */
3233 LIST_INSERT_HEAD(head, inp, sctp_hash);
3234 SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n",
3235 head, ntohs(lport), port_reuse_active);
3236 /* set in the port */
3237 inp->sctp_lport = lport;
3239 /* turn off just the unbound flag */
3240 inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
3241 SCTP_INP_WUNLOCK(inp);
3242 SCTP_INP_INFO_WUNLOCK();
3248 sctp_iterator_inp_being_freed(struct sctp_inpcb *inp)
3250 struct sctp_iterator *it, *nit;
3253 * We enter with the only the ITERATOR_LOCK in place and a write
3254 * lock on the inp_info stuff.
3256 it = sctp_it_ctl.cur_it;
3257 if (it && (it->vn != curvnet)) {
3258 /* Its not looking at our VNET */
3261 if (it && (it->inp == inp)) {
3263 * This is tricky and we hold the iterator lock, but when it
3264 * returns and gets the lock (when we release it) the
3265 * iterator will try to operate on inp. We need to stop that
3266 * from happening. But of course the iterator has a
3267 * reference on the stcb and inp. We can mark it and it will
3270 * If its a single iterator situation, we set the end iterator
3271 * flag. Otherwise we set the iterator to go to the next
3275 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3276 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
3278 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_INP;
3282 * Now go through and remove any single reference to our inp that
3283 * may be still pending on the list
3285 SCTP_IPI_ITERATOR_WQ_LOCK();
3286 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
3287 if (it->vn != curvnet) {
3290 if (it->inp == inp) {
3291 /* This one points to me is it inp specific? */
3292 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3293 /* Remove and free this one */
3294 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
3296 if (it->function_atend != NULL) {
3297 (*it->function_atend) (it->pointer, it->val);
3299 SCTP_FREE(it, SCTP_M_ITER);
3301 it->inp = LIST_NEXT(it->inp, sctp_list);
3303 SCTP_INP_INCR_REF(it->inp);
3307 * When its put in the refcnt is incremented so decr
3310 SCTP_INP_DECR_REF(inp);
3313 SCTP_IPI_ITERATOR_WQ_UNLOCK();
3316 /* release sctp_inpcb unbind the port */
3318 sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
3321 * Here we free a endpoint. We must find it (if it is in the Hash
3322 * table) and remove it from there. Then we must also find it in the
3323 * overall list and remove it from there. After all removals are
3324 * complete then any timer has to be stopped. Then start the actual
3325 * freeing. a) Any local lists. b) Any associations. c) The hash of
3326 * all associations. d) finally the ep itself.
3329 struct sctp_tcb *asoc, *nasoc;
3330 struct sctp_laddr *laddr, *nladdr;
3331 struct inpcb *ip_pcb;
3333 int being_refed = 0;
3334 struct sctp_queued_to_read *sq, *nsq;
3336 sctp_sharedkey_t *shared_key, *nshared_key;
3339 #ifdef SCTP_LOG_CLOSING
3340 sctp_log_closing(inp, NULL, 0);
3342 SCTP_ITERATOR_LOCK();
3343 /* mark any iterators on the list or being processed */
3344 sctp_iterator_inp_being_freed(inp);
3345 SCTP_ITERATOR_UNLOCK();
3346 so = inp->sctp_socket;
3347 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
3348 /* been here before.. eeks.. get out of here */
3349 SCTP_PRINTF("This conflict in free SHOULD not be happening! from %d, imm %d\n", from, immediate);
3350 #ifdef SCTP_LOG_CLOSING
3351 sctp_log_closing(inp, NULL, 1);
3355 SCTP_ASOC_CREATE_LOCK(inp);
3356 SCTP_INP_INFO_WLOCK();
3358 SCTP_INP_WLOCK(inp);
3359 if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
3360 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP;
3361 /* socket is gone, so no more wakeups allowed */
3362 inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE;
3363 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
3364 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
3367 /* First time through we have the socket lock, after that no more. */
3368 sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL,
3369 SCTP_FROM_SCTP_PCB + SCTP_LOC_1);
3372 sctp_m_freem(inp->control);
3373 inp->control = NULL;
3376 sctp_m_freem(inp->pkt);
3380 ip_pcb = &inp->ip_inp.inp; /* we could just cast the main pointer
3381 * here but I will be nice :> (i.e.
3383 if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
3387 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3388 SCTP_TCB_LOCK(asoc);
3389 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3390 /* Skip guys being freed */
3392 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3394 * Special case - we did not start a
3395 * kill timer on the asoc due to it
3396 * was not closed. So go ahead and
3399 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3400 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3402 SCTP_TCB_UNLOCK(asoc);
3405 if (((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_WAIT) ||
3406 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_ECHOED)) &&
3407 (asoc->asoc.total_output_queue_size == 0)) {
3409 * If we have data in queue, we don't want
3410 * to just free since the app may have done,
3411 * send()/close or connect/send/close. And
3412 * it wants the data to get across first.
3414 /* Just abandon things in the front states */
3415 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE,
3416 SCTP_FROM_SCTP_PCB + SCTP_LOC_2) == 0) {
3421 /* Disconnect the socket please */
3422 asoc->sctp_socket = NULL;
3423 asoc->asoc.state |= SCTP_STATE_CLOSED_SOCKET;
3424 if ((asoc->asoc.size_on_reasm_queue > 0) ||
3425 (asoc->asoc.control_pdapi) ||
3426 (asoc->asoc.size_on_all_streams > 0) ||
3427 (so && (so->so_rcv.sb_cc > 0))
3429 /* Left with Data unread */
3430 struct mbuf *op_err;
3432 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3433 0, M_DONTWAIT, 1, MT_DATA);
3435 /* Fill in the user initiated abort */
3436 struct sctp_paramhdr *ph;
3439 SCTP_BUF_LEN(op_err) =
3440 sizeof(struct sctp_paramhdr) + sizeof(uint32_t);
3442 struct sctp_paramhdr *);
3443 ph->param_type = htons(
3444 SCTP_CAUSE_USER_INITIATED_ABT);
3445 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3446 ippp = (uint32_t *) (ph + 1);
3447 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_3);
3449 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_3;
3450 #if defined(SCTP_PANIC_ON_ABORT)
3451 panic("inpcb_free does an abort");
3453 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3454 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3455 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3456 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3457 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3459 if (sctp_free_assoc(inp, asoc,
3460 SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_4) == 0) {
3464 } else if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3465 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3466 (asoc->asoc.stream_queue_cnt == 0)
3468 if (asoc->asoc.locked_on_sending) {
3471 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
3472 (SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
3473 struct sctp_nets *netp;
3475 if (asoc->asoc.alternate) {
3476 netp = asoc->asoc.alternate;
3478 netp = asoc->asoc.primary_destination;
3481 * there is nothing queued to send,
3482 * so I send shutdown
3484 sctp_send_shutdown(asoc, netp);
3485 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3486 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3487 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3489 SCTP_SET_STATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_SENT);
3490 SCTP_CLEAR_SUBSTATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_PENDING);
3491 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, asoc->sctp_ep, asoc,
3493 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3494 asoc->asoc.primary_destination);
3495 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED);
3498 /* mark into shutdown pending */
3499 struct sctp_stream_queue_pending *sp;
3501 asoc->asoc.state |= SCTP_STATE_SHUTDOWN_PENDING;
3502 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3503 asoc->asoc.primary_destination);
3504 if (asoc->asoc.locked_on_sending) {
3505 sp = TAILQ_LAST(&((asoc->asoc.locked_on_sending)->outqueue),
3508 SCTP_PRINTF("Error, sp is NULL, locked on sending is %p strm:%d\n",
3509 asoc->asoc.locked_on_sending,
3510 asoc->asoc.locked_on_sending->stream_no);
3512 if ((sp->length == 0) && (sp->msg_is_complete == 0))
3513 asoc->asoc.state |= SCTP_STATE_PARTIAL_MSG_LEFT;
3516 if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3517 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3518 (asoc->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
3519 struct mbuf *op_err;
3522 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3523 0, M_DONTWAIT, 1, MT_DATA);
3529 struct sctp_paramhdr *ph;
3532 SCTP_BUF_LEN(op_err) =
3533 (sizeof(struct sctp_paramhdr) +
3536 struct sctp_paramhdr *);
3537 ph->param_type = htons(
3538 SCTP_CAUSE_USER_INITIATED_ABT);
3539 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3540 ippp = (uint32_t *) (ph + 1);
3541 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_5);
3543 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_5;
3544 #if defined(SCTP_PANIC_ON_ABORT)
3545 panic("inpcb_free does an abort");
3548 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3549 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3550 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3551 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3552 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3554 if (sctp_free_assoc(inp, asoc,
3555 SCTP_PCBFREE_NOFORCE,
3556 SCTP_FROM_SCTP_PCB + SCTP_LOC_6) == 0) {
3561 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
3565 SCTP_TCB_UNLOCK(asoc);
3567 /* now is there some left in our SHUTDOWN state? */
3569 #ifdef SCTP_LOG_CLOSING
3570 sctp_log_closing(inp, NULL, 2);
3572 inp->sctp_socket = NULL;
3573 SCTP_INP_WUNLOCK(inp);
3574 SCTP_ASOC_CREATE_UNLOCK(inp);
3575 SCTP_INP_INFO_WUNLOCK();
3579 inp->sctp_socket = NULL;
3580 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) !=
3581 SCTP_PCB_FLAGS_UNBOUND) {
3583 * ok, this guy has been bound. It's port is somewhere in
3584 * the SCTP_BASE_INFO(hash table). Remove it!
3586 LIST_REMOVE(inp, sctp_hash);
3587 inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND;
3590 * If there is a timer running to kill us, forget it, since it may
3591 * have a contest on the INP lock.. which would cause us to die ...
3594 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3595 SCTP_TCB_LOCK(asoc);
3596 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3597 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3598 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3599 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3602 SCTP_TCB_UNLOCK(asoc);
3605 /* Free associations that are NOT killing us */
3606 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_COOKIE_WAIT) &&
3607 ((asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) {
3608 struct mbuf *op_err;
3611 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3612 0, M_DONTWAIT, 1, MT_DATA);
3614 /* Fill in the user initiated abort */
3615 struct sctp_paramhdr *ph;
3617 SCTP_BUF_LEN(op_err) = (sizeof(struct sctp_paramhdr) +
3619 ph = mtod(op_err, struct sctp_paramhdr *);
3620 ph->param_type = htons(
3621 SCTP_CAUSE_USER_INITIATED_ABT);
3622 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3623 ippp = (uint32_t *) (ph + 1);
3624 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_7);
3627 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_7;
3628 #if defined(SCTP_PANIC_ON_ABORT)
3629 panic("inpcb_free does an abort");
3631 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3632 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3633 } else if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3635 SCTP_TCB_UNLOCK(asoc);
3638 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3639 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3640 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3642 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_8) == 0) {
3647 /* Ok we have someone out there that will kill us */
3648 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3649 #ifdef SCTP_LOG_CLOSING
3650 sctp_log_closing(inp, NULL, 3);
3652 SCTP_INP_WUNLOCK(inp);
3653 SCTP_ASOC_CREATE_UNLOCK(inp);
3654 SCTP_INP_INFO_WUNLOCK();
3657 if (SCTP_INP_LOCK_CONTENDED(inp))
3659 if (SCTP_INP_READ_CONTENDED(inp))
3661 if (SCTP_ASOC_CREATE_LOCK_CONTENDED(inp))
3664 if ((inp->refcount) ||
3666 (inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) {
3667 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3668 #ifdef SCTP_LOG_CLOSING
3669 sctp_log_closing(inp, NULL, 4);
3671 sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
3672 SCTP_INP_WUNLOCK(inp);
3673 SCTP_ASOC_CREATE_UNLOCK(inp);
3674 SCTP_INP_INFO_WUNLOCK();
3677 inp->sctp_ep.signature_change.type = 0;
3678 inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE;
3680 * Remove it from the list .. last thing we need a lock for.
3682 LIST_REMOVE(inp, sctp_list);
3683 SCTP_INP_WUNLOCK(inp);
3684 SCTP_ASOC_CREATE_UNLOCK(inp);
3685 SCTP_INP_INFO_WUNLOCK();
3687 * Now we release all locks. Since this INP cannot be found anymore
3688 * except possibly by the kill timer that might be running. We call
3689 * the drain function here. It should hit the case were it sees the
3690 * ACTIVE flag cleared and exit out freeing us to proceed and
3691 * destroy everything.
3693 if (from != SCTP_CALLED_FROM_INPKILL_TIMER) {
3694 (void)SCTP_OS_TIMER_STOP_DRAIN(&inp->sctp_ep.signature_change.timer);
3696 /* Probably un-needed */
3697 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3700 #ifdef SCTP_LOG_CLOSING
3701 sctp_log_closing(inp, NULL, 5);
3705 if ((inp->sctp_asocidhash) != NULL) {
3706 SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark);
3707 inp->sctp_asocidhash = NULL;
3709 /* sa_ignore FREED_MEMORY */
3710 TAILQ_FOREACH_SAFE(sq, &inp->read_queue, next, nsq) {
3711 /* Its only abandoned if it had data left */
3713 SCTP_STAT_INCR(sctps_left_abandon);
3715 TAILQ_REMOVE(&inp->read_queue, sq, next);
3716 sctp_free_remote_addr(sq->whoFrom);
3718 so->so_rcv.sb_cc -= sq->length;
3720 sctp_m_freem(sq->data);
3724 * no need to free the net count, since at this point all
3727 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
3728 SCTP_DECR_READQ_COUNT();
3730 /* Now the sctp_pcb things */
3732 * free each asoc if it is not already closed/free. we can't use the
3733 * macro here since le_next will get freed as part of the
3734 * sctp_free_assoc() call.
3739 ipsec_delete_pcbpolicy(ip_pcb);
3742 /* Unlocks not needed since the socket is gone now */
3744 if (ip_pcb->inp_options) {
3745 (void)sctp_m_free(ip_pcb->inp_options);
3746 ip_pcb->inp_options = 0;
3749 if (ip_pcb->inp_vflag & INP_IPV6) {
3750 struct in6pcb *in6p;
3752 in6p = (struct in6pcb *)inp;
3753 ip6_freepcbopts(in6p->in6p_outputopts);
3756 ip_pcb->inp_vflag = 0;
3757 /* free up authentication fields */
3758 if (inp->sctp_ep.local_auth_chunks != NULL)
3759 sctp_free_chunklist(inp->sctp_ep.local_auth_chunks);
3760 if (inp->sctp_ep.local_hmacs != NULL)
3761 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3763 LIST_FOREACH_SAFE(shared_key, &inp->sctp_ep.shared_keys, next, nshared_key) {
3764 LIST_REMOVE(shared_key, next);
3765 sctp_free_sharedkey(shared_key);
3766 /* sa_ignore FREED_MEMORY */
3770 * if we have an address list the following will free the list of
3771 * ifaddr's that are set into this ep. Again macro limitations here,
3772 * since the LIST_FOREACH could be a bad idea.
3774 LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
3775 sctp_remove_laddr(laddr);
3778 #ifdef SCTP_TRACK_FREED_ASOCS
3780 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_free_list, sctp_tcblist, nasoc) {
3781 LIST_REMOVE(asoc, sctp_tcblist);
3782 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), asoc);
3783 SCTP_DECR_ASOC_COUNT();
3785 /* *** END TEMP CODE *** */
3787 /* Now lets see about freeing the EP hash table. */
3788 if (inp->sctp_tcbhash != NULL) {
3789 SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
3790 inp->sctp_tcbhash = NULL;
3792 /* Now we must put the ep memory back into the zone pool */
3793 INP_LOCK_DESTROY(&inp->ip_inp.inp);
3794 SCTP_INP_LOCK_DESTROY(inp);
3795 SCTP_INP_READ_DESTROY(inp);
3796 SCTP_ASOC_CREATE_LOCK_DESTROY(inp);
3797 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
3798 SCTP_DECR_EP_COUNT();
3803 sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
3805 struct sctp_nets *net;
3807 /* locate the address */
3808 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3809 if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr))
3817 sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
3819 struct sctp_ifa *sctp_ifa;
3821 sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED);
3830 * add's a remote endpoint address, done with the INIT/INIT-ACK as well as
3831 * when a ASCONF arrives that adds it. It will also initialize all the cwnd
3835 sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
3836 struct sctp_nets **netp, int set_scope, int from)
3839 * The following is redundant to the same lines in the
3840 * sctp_aloc_assoc() but is needed since others call the add address
3843 struct sctp_nets *net, *netfirst;
3846 SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ",
3848 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr);
3850 netfirst = sctp_findnet(stcb, newaddr);
3853 * Lie and return ok, we don't want to make the association
3854 * go away for this behavior. It will happen in the TCP
3855 * model in a connected socket. It does not reach the hash
3856 * table until after the association is built so it can't be
3857 * found. Mark as reachable, since the initial creation will
3858 * have been cleared and the NOT_IN_ASSOC flag will have
3859 * been added... and we don't want to end up removing it
3862 if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) {
3863 netfirst->dest_state = (SCTP_ADDR_REACHABLE |
3864 SCTP_ADDR_UNCONFIRMED);
3866 netfirst->dest_state = SCTP_ADDR_REACHABLE;
3872 switch (newaddr->sa_family) {
3876 struct sockaddr_in *sin;
3878 sin = (struct sockaddr_in *)newaddr;
3879 if (sin->sin_addr.s_addr == 0) {
3880 /* Invalid address */
3883 /* zero out the bzero area */
3884 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
3886 /* assure len is set */
3887 sin->sin_len = sizeof(struct sockaddr_in);
3889 #ifdef SCTP_DONT_DO_PRIVADDR_SCOPE
3890 stcb->ipv4_local_scope = 1;
3892 if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
3893 stcb->asoc.ipv4_local_scope = 1;
3895 #endif /* SCTP_DONT_DO_PRIVADDR_SCOPE */
3897 /* Validate the address is in scope */
3898 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) &&
3899 (stcb->asoc.ipv4_local_scope == 0)) {
3909 struct sockaddr_in6 *sin6;
3911 sin6 = (struct sockaddr_in6 *)newaddr;
3912 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3913 /* Invalid address */
3916 /* assure len is set */
3917 sin6->sin6_len = sizeof(struct sockaddr_in6);
3919 if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) {
3920 stcb->asoc.loopback_scope = 1;
3921 stcb->asoc.local_scope = 0;
3922 stcb->asoc.ipv4_local_scope = 1;
3923 stcb->asoc.site_scope = 1;
3924 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
3926 * If the new destination is a
3927 * LINK_LOCAL we must have common
3928 * site scope. Don't set the local
3929 * scope since we may not share all
3930 * links, only loopback can do this.
3931 * Links on the local network would
3932 * also be on our private network
3935 stcb->asoc.ipv4_local_scope = 1;
3936 stcb->asoc.site_scope = 1;
3937 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
3939 * If the new destination is
3940 * SITE_LOCAL then we must have site
3943 stcb->asoc.site_scope = 1;
3946 /* Validate the address is in scope */
3947 if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) &&
3948 (stcb->asoc.loopback_scope == 0)) {
3950 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
3951 (stcb->asoc.local_scope == 0)) {
3953 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
3954 (stcb->asoc.site_scope == 0)) {
3962 /* not supported family type */
3965 net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets);
3969 SCTP_INCR_RADDR_COUNT();
3970 bzero(net, sizeof(struct sctp_nets));
3971 (void)SCTP_GETTIME_TIMEVAL(&net->start_time);
3972 memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len);
3973 switch (newaddr->sa_family) {
3976 ((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport;
3981 ((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport;
3987 net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id);
3988 if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) {
3989 stcb->asoc.loopback_scope = 1;
3990 stcb->asoc.ipv4_local_scope = 1;
3991 stcb->asoc.local_scope = 0;
3992 stcb->asoc.site_scope = 1;
3995 net->failure_threshold = stcb->asoc.def_net_failure;
3996 net->pf_threshold = stcb->asoc.def_net_pf_threshold;
3997 if (addr_inscope == 0) {
3998 net->dest_state = (SCTP_ADDR_REACHABLE |
3999 SCTP_ADDR_OUT_OF_SCOPE);
4001 if (from == SCTP_ADDR_IS_CONFIRMED)
4002 /* SCTP_ADDR_IS_CONFIRMED is passed by connect_x */
4003 net->dest_state = SCTP_ADDR_REACHABLE;
4005 net->dest_state = SCTP_ADDR_REACHABLE |
4006 SCTP_ADDR_UNCONFIRMED;
4009 * We set this to 0, the timer code knows that this means its an
4012 net->rto_needed = 1;
4014 net->RTO_measured = 0;
4015 stcb->asoc.numnets++;
4016 *(&net->ref_count) = 1;
4017 net->cwr_window_tsn = net->last_cwr_tsn = stcb->asoc.sending_seq - 1;
4018 if (SCTP_BASE_SYSCTL(sctp_udp_tunneling_for_client_enable)) {
4019 net->port = htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port));
4023 net->dscp = stcb->asoc.default_dscp;
4025 net->flowlabel = stcb->asoc.default_flowlabel;
4027 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
4028 net->dest_state |= SCTP_ADDR_NOHB;
4030 net->dest_state &= ~SCTP_ADDR_NOHB;
4032 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DO_NOT_PMTUD)) {
4033 net->dest_state |= SCTP_ADDR_NO_PMTUD;
4035 net->dest_state &= ~SCTP_ADDR_NO_PMTUD;
4037 net->heart_beat_delay = stcb->asoc.heart_beat_delay;
4038 /* Init the timer structure */
4039 SCTP_OS_TIMER_INIT(&net->rxt_timer.timer);
4040 SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer);
4041 SCTP_OS_TIMER_INIT(&net->hb_timer.timer);
4043 /* Now generate a route for this guy */
4045 /* KAME hack: embed scopeid */
4046 if (newaddr->sa_family == AF_INET6) {
4047 struct sockaddr_in6 *sin6;
4049 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
4050 (void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone));
4051 sin6->sin6_scope_id = 0;
4054 SCTP_RTALLOC((sctp_route_t *) & net->ro, stcb->asoc.vrf_id);
4056 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) {
4057 /* Get source address */
4058 net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep,
4060 (sctp_route_t *) & net->ro,
4064 /* Now get the interface MTU */
4065 if (net->ro._s_addr && net->ro._s_addr->ifn_p) {
4066 net->mtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p);
4070 if (net->mtu == 0) {
4072 net->mtu = SCTP_DEFAULT_MTU;
4076 rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_rt);
4079 * Start things off to match mtu of
4082 SCTP_SET_MTU_OF_ROUTE(&net->ro._l_addr.sa,
4083 net->ro.ro_rt, net->mtu);
4086 * we take the route mtu over the interface,
4087 * since the route may be leading out the
4088 * loopback, or a different interface.
4093 if (from == SCTP_ALLOC_ASOC) {
4094 stcb->asoc.smallest_mtu = net->mtu;
4097 net->mtu = stcb->asoc.smallest_mtu;
4100 if (newaddr->sa_family == AF_INET6) {
4101 struct sockaddr_in6 *sin6;
4103 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
4104 (void)sa6_recoverscope(sin6);
4108 net->mtu -= sizeof(struct udphdr);
4110 if (stcb->asoc.smallest_mtu > net->mtu) {
4111 stcb->asoc.smallest_mtu = net->mtu;
4113 /* JRS - Use the congestion control given in the CC module */
4114 if (stcb->asoc.cc_functions.sctp_set_initial_cc_param != NULL)
4115 (*stcb->asoc.cc_functions.sctp_set_initial_cc_param) (stcb, net);
4118 * CMT: CUC algo - set find_pseudo_cumack to TRUE (1) at beginning
4119 * of assoc (2005/06/27, iyengar@cis.udel.edu)
4121 net->find_pseudo_cumack = 1;
4122 net->find_rtx_pseudo_cumack = 1;
4123 net->src_addr_selected = 0;
4124 /* Choose an initial flowid. */
4125 net->flowid = stcb->asoc.my_vtag ^
4126 ntohs(stcb->rport) ^
4127 ntohs(stcb->sctp_ep->sctp_lport);
4134 netfirst = TAILQ_FIRST(&stcb->asoc.nets);
4135 if (net->ro.ro_rt == NULL) {
4136 /* Since we have no route put it at the back */
4137 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4138 } else if (netfirst == NULL) {
4139 /* We are the first one in the pool. */
4140 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4141 } else if (netfirst->ro.ro_rt == NULL) {
4143 * First one has NO route. Place this one ahead of the first
4146 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4147 } else if (net->ro.ro_rt->rt_ifp != netfirst->ro.ro_rt->rt_ifp) {
4149 * This one has a different interface than the one at the
4150 * top of the list. Place it ahead.
4152 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4155 * Ok we have the same interface as the first one. Move
4156 * forward until we find either a) one with a NULL route...
4157 * insert ahead of that b) one with a different ifp.. insert
4158 * after that. c) end of the list.. insert at the tail.
4160 struct sctp_nets *netlook;
4163 netlook = TAILQ_NEXT(netfirst, sctp_next);
4164 if (netlook == NULL) {
4165 /* End of the list */
4166 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4168 } else if (netlook->ro.ro_rt == NULL) {
4169 /* next one has NO route */
4170 TAILQ_INSERT_BEFORE(netfirst, net, sctp_next);
4172 } else if (netlook->ro.ro_rt->rt_ifp != net->ro.ro_rt->rt_ifp) {
4173 TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook,
4179 } while (netlook != NULL);
4182 /* got to have a primary set */
4183 if (stcb->asoc.primary_destination == 0) {
4184 stcb->asoc.primary_destination = net;
4185 } else if ((stcb->asoc.primary_destination->ro.ro_rt == NULL) &&
4187 ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
4188 /* No route to current primary adopt new primary */
4189 stcb->asoc.primary_destination = net;
4191 /* Validate primary is first */
4192 net = TAILQ_FIRST(&stcb->asoc.nets);
4193 if ((net != stcb->asoc.primary_destination) &&
4194 (stcb->asoc.primary_destination)) {
4196 * first one on the list is NOT the primary sctp_cmpaddr()
4197 * is much more efficient if the primary is the first on the
4200 TAILQ_REMOVE(&stcb->asoc.nets,
4201 stcb->asoc.primary_destination, sctp_next);
4202 TAILQ_INSERT_HEAD(&stcb->asoc.nets,
4203 stcb->asoc.primary_destination, sctp_next);
4210 sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
4213 struct sctpasochead *head;
4214 struct sctp_tcb *lstcb;
4216 SCTP_INP_WLOCK(inp);
4218 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
4220 SCTP_INP_WUNLOCK(inp);
4224 * We don't allow assoc id to be one of SCTP_FUTURE_ASSOC,
4225 * SCTP_CURRENT_ASSOC and SCTP_ALL_ASSOC.
4227 if (inp->sctp_associd_counter <= SCTP_ALL_ASSOC) {
4228 inp->sctp_associd_counter = SCTP_ALL_ASSOC + 1;
4230 id = inp->sctp_associd_counter;
4231 inp->sctp_associd_counter++;
4232 lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t) id, 0);
4236 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
4237 LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash);
4238 stcb->asoc.in_asocid_hash = 1;
4239 SCTP_INP_WUNLOCK(inp);
4244 * allocate an association and add it to the endpoint. The caller must be
4245 * careful to add all additional addresses once they are know right away or
4246 * else the assoc will be may experience a blackout scenario.
4249 sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
4250 int *error, uint32_t override_tag, uint32_t vrf_id,
4254 /* note the p argument is only valid in unbound sockets */
4256 struct sctp_tcb *stcb;
4257 struct sctp_association *asoc;
4258 struct sctpasochead *head;
4263 * Assumption made here: Caller has done a
4264 * sctp_findassociation_ep_addr(ep, addr's); to make sure the
4265 * address does not exist already.
4267 if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) {
4268 /* Hit max assoc, sorry no more */
4269 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4273 if (firstaddr == NULL) {
4274 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4278 SCTP_INP_RLOCK(inp);
4279 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
4280 ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) ||
4281 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4283 * If its in the TCP pool, its NOT allowed to create an
4284 * association. The parent listener needs to call
4285 * sctp_aloc_assoc.. or the one-2-many socket. If a peeled
4286 * off, or connected one does this.. its an error.
4288 SCTP_INP_RUNLOCK(inp);
4289 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4293 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
4294 (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)) {
4295 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) ||
4296 (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED)) {
4297 SCTP_INP_RUNLOCK(inp);
4298 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4303 SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:");
4306 SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr);
4307 switch (firstaddr->sa_family) {
4310 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4311 ntohs(((struct sockaddr_in *)firstaddr)->sin_port));
4316 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4317 ntohs(((struct sockaddr_in6 *)firstaddr)->sin6_port));
4324 SCTPDBG(SCTP_DEBUG_PCB3, "None\n");
4326 #endif /* SCTP_DEBUG */
4327 switch (firstaddr->sa_family) {
4331 struct sockaddr_in *sin;
4333 sin = (struct sockaddr_in *)firstaddr;
4334 if ((ntohs(sin->sin_port) == 0) ||
4335 (sin->sin_addr.s_addr == INADDR_ANY) ||
4336 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
4337 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
4338 /* Invalid address */
4339 SCTP_INP_RUNLOCK(inp);
4340 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4344 rport = sin->sin_port;
4351 struct sockaddr_in6 *sin6;
4353 sin6 = (struct sockaddr_in6 *)firstaddr;
4354 if ((ntohs(sin6->sin6_port) == 0) ||
4355 IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
4356 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
4357 /* Invalid address */
4358 SCTP_INP_RUNLOCK(inp);
4359 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4363 rport = sin6->sin6_port;
4368 /* not supported family type */
4369 SCTP_INP_RUNLOCK(inp);
4370 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4374 SCTP_INP_RUNLOCK(inp);
4375 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4377 * If you have not performed a bind, then we need to do the
4378 * ephemeral bind for you.
4380 if ((err = sctp_inpcb_bind(inp->sctp_socket,
4381 (struct sockaddr *)NULL,
4382 (struct sctp_ifa *)NULL,
4385 /* bind error, probably perm */
4390 stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb);
4392 /* out of memory? */
4393 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
4397 SCTP_INCR_ASOC_COUNT();
4399 bzero(stcb, sizeof(*stcb));
4402 asoc->assoc_id = sctp_aloc_a_assoc_id(inp, stcb);
4403 SCTP_TCB_LOCK_INIT(stcb);
4404 SCTP_TCB_SEND_LOCK_INIT(stcb);
4405 stcb->rport = rport;
4406 /* setup back pointer's */
4407 stcb->sctp_ep = inp;
4408 stcb->sctp_socket = inp->sctp_socket;
4409 if ((err = sctp_init_asoc(inp, stcb, override_tag, vrf_id))) {
4411 SCTP_TCB_LOCK_DESTROY(stcb);
4412 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4413 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4414 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4415 SCTP_DECR_ASOC_COUNT();
4420 SCTP_INP_INFO_WLOCK();
4421 SCTP_INP_WLOCK(inp);
4422 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
4423 /* inpcb freed while alloc going on */
4424 SCTP_TCB_LOCK_DESTROY(stcb);
4425 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4426 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4427 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4428 SCTP_INP_WUNLOCK(inp);
4429 SCTP_INP_INFO_WUNLOCK();
4430 SCTP_DECR_ASOC_COUNT();
4431 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4435 SCTP_TCB_LOCK(stcb);
4437 /* now that my_vtag is set, add it to the hash */
4438 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))];
4439 /* put it in the bucket in the vtag hash of assoc's for the system */
4440 LIST_INSERT_HEAD(head, stcb, sctp_asocs);
4441 SCTP_INP_INFO_WUNLOCK();
4443 if ((err = sctp_add_remote_addr(stcb, firstaddr, NULL, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC))) {
4444 /* failure.. memory error? */
4445 if (asoc->strmout) {
4446 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4447 asoc->strmout = NULL;
4449 if (asoc->mapping_array) {
4450 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4451 asoc->mapping_array = NULL;
4453 if (asoc->nr_mapping_array) {
4454 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4455 asoc->nr_mapping_array = NULL;
4457 SCTP_DECR_ASOC_COUNT();
4458 SCTP_TCB_LOCK_DESTROY(stcb);
4459 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4460 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4461 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4462 SCTP_INP_WUNLOCK(inp);
4463 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4467 /* Init all the timers */
4468 SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer);
4469 SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer);
4470 SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer);
4471 SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer);
4472 SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer);
4473 SCTP_OS_TIMER_INIT(&asoc->delayed_event_timer.timer);
4474 SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer);
4476 LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist);
4477 /* now file the port under the hash as well */
4478 if (inp->sctp_tcbhash != NULL) {
4479 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport,
4480 inp->sctp_hashmark)];
4481 LIST_INSERT_HEAD(head, stcb, sctp_tcbhash);
4483 SCTP_INP_WUNLOCK(inp);
4484 SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", stcb);
4490 sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
4492 struct sctp_association *asoc;
4496 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4497 if (net == asoc->primary_destination) {
4499 struct sctp_nets *lnet;
4501 lnet = TAILQ_FIRST(&asoc->nets);
4503 * Mobility adaptation Ideally, if deleted destination is
4504 * the primary, it becomes a fast retransmission trigger by
4505 * the subsequent SET PRIMARY. (by micchie)
4507 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
4508 SCTP_MOBILITY_BASE) ||
4509 sctp_is_mobility_feature_on(stcb->sctp_ep,
4510 SCTP_MOBILITY_FASTHANDOFF)) {
4511 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n");
4512 if (asoc->deleted_primary != NULL) {
4513 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n");
4516 asoc->deleted_primary = net;
4517 atomic_add_int(&net->ref_count, 1);
4518 memset(&net->lastsa, 0, sizeof(net->lastsa));
4519 memset(&net->lastsv, 0, sizeof(net->lastsv));
4520 sctp_mobility_feature_on(stcb->sctp_ep,
4521 SCTP_MOBILITY_PRIM_DELETED);
4522 sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED,
4523 stcb->sctp_ep, stcb, NULL);
4526 /* Try to find a confirmed primary */
4527 asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0);
4529 if (net == asoc->last_data_chunk_from) {
4531 asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets);
4533 if (net == asoc->last_control_chunk_from) {
4535 asoc->last_control_chunk_from = NULL;
4537 if (net == stcb->asoc.alternate) {
4538 sctp_free_remote_addr(stcb->asoc.alternate);
4539 stcb->asoc.alternate = NULL;
4541 sctp_free_remote_addr(net);
4545 * remove a remote endpoint address from an association, it will fail if the
4546 * address does not exist.
4549 sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
4552 * Here we need to remove a remote address. This is quite simple, we
4553 * first find it in the list of address for the association
4554 * (tasoc->asoc.nets) and then if it is there, we do a LIST_REMOVE
4555 * on that item. Note we do not allow it to be removed if there are
4556 * no other addresses.
4558 struct sctp_association *asoc;
4559 struct sctp_nets *net, *nnet;
4563 /* locate the address */
4564 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
4565 if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) {
4568 if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr,
4570 /* we found the guy */
4571 if (asoc->numnets < 2) {
4572 /* Must have at LEAST two remote addresses */
4575 sctp_remove_net(stcb, net);
4585 sctp_delete_from_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4587 struct sctpvtaghead *chain;
4588 struct sctp_tagblock *twait_block;
4592 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4593 if (!LIST_EMPTY(chain)) {
4594 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4595 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4596 if ((twait_block->vtag_block[i].v_tag == tag) &&
4597 (twait_block->vtag_block[i].lport == lport) &&
4598 (twait_block->vtag_block[i].rport == rport)) {
4599 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4600 twait_block->vtag_block[i].v_tag = 0;
4601 twait_block->vtag_block[i].lport = 0;
4602 twait_block->vtag_block[i].rport = 0;
4614 sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4616 struct sctpvtaghead *chain;
4617 struct sctp_tagblock *twait_block;
4621 SCTP_INP_INFO_WLOCK();
4622 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4623 if (!LIST_EMPTY(chain)) {
4624 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4625 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4626 if ((twait_block->vtag_block[i].v_tag == tag) &&
4627 (twait_block->vtag_block[i].lport == lport) &&
4628 (twait_block->vtag_block[i].rport == rport)) {
4637 SCTP_INP_INFO_WUNLOCK();
4643 sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport)
4645 struct sctpvtaghead *chain;
4646 struct sctp_tagblock *twait_block;
4654 (void)SCTP_GETTIME_TIMEVAL(&now);
4655 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4657 if (!LIST_EMPTY(chain)) {
4658 /* Block(s) present, lets find space, and expire on the fly */
4659 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4660 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4661 if ((twait_block->vtag_block[i].v_tag == 0) &&
4663 twait_block->vtag_block[i].tv_sec_at_expire =
4665 twait_block->vtag_block[i].v_tag = tag;
4666 twait_block->vtag_block[i].lport = lport;
4667 twait_block->vtag_block[i].rport = rport;
4669 } else if ((twait_block->vtag_block[i].v_tag) &&
4670 ((long)twait_block->vtag_block[i].tv_sec_at_expire < now.tv_sec)) {
4671 /* Audit expires this guy */
4672 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4673 twait_block->vtag_block[i].v_tag = 0;
4674 twait_block->vtag_block[i].lport = 0;
4675 twait_block->vtag_block[i].rport = 0;
4677 /* Reuse it for my new tag */
4678 twait_block->vtag_block[i].tv_sec_at_expire = now.tv_sec + time;
4679 twait_block->vtag_block[i].v_tag = tag;
4680 twait_block->vtag_block[i].lport = lport;
4681 twait_block->vtag_block[i].rport = rport;
4688 * We only do up to the block where we can
4689 * place our tag for audits
4695 /* Need to add a new block to chain */
4697 SCTP_MALLOC(twait_block, struct sctp_tagblock *,
4698 sizeof(struct sctp_tagblock), SCTP_M_TIMW);
4699 if (twait_block == NULL) {
4701 panic("Can not alloc tagblock");
4705 memset(twait_block, 0, sizeof(struct sctp_tagblock));
4706 LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock);
4707 twait_block->vtag_block[0].tv_sec_at_expire = now.tv_sec + time;
4708 twait_block->vtag_block[0].v_tag = tag;
4709 twait_block->vtag_block[0].lport = lport;
4710 twait_block->vtag_block[0].rport = rport;
4717 * Free the association after un-hashing the remote port. This
4718 * function ALWAYS returns holding NO LOCK on the stcb. It DOES
4719 * expect that the input to this function IS a locked TCB.
4720 * It will return 0, if it did NOT destroy the association (instead
4721 * it unlocks it. It will return NON-zero if it either destroyed the
4722 * association OR the association is already destroyed.
4725 sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
4728 struct sctp_association *asoc;
4729 struct sctp_nets *net, *nnet;
4730 struct sctp_laddr *laddr, *naddr;
4731 struct sctp_tmit_chunk *chk, *nchk;
4732 struct sctp_asconf_addr *aparam, *naparam;
4733 struct sctp_asconf_ack *aack, *naack;
4734 struct sctp_stream_reset_list *strrst, *nstrrst;
4735 struct sctp_queued_to_read *sq, *nsq;
4736 struct sctp_stream_queue_pending *sp, *nsp;
4737 sctp_sharedkey_t *shared_key, *nshared_key;
4740 /* first, lets purge the entry from the hash table. */
4742 #ifdef SCTP_LOG_CLOSING
4743 sctp_log_closing(inp, stcb, 6);
4745 if (stcb->asoc.state == 0) {
4746 #ifdef SCTP_LOG_CLOSING
4747 sctp_log_closing(inp, NULL, 7);
4749 /* there is no asoc, really TSNH :-0 */
4752 if (stcb->asoc.alternate) {
4753 sctp_free_remote_addr(stcb->asoc.alternate);
4754 stcb->asoc.alternate = NULL;
4757 if (stcb->freed_from_where == 0) {
4758 /* Only record the first place free happened from */
4759 stcb->freed_from_where = from_location;
4764 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4765 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4766 /* nothing around */
4769 so = inp->sctp_socket;
4772 * We used timer based freeing if a reader or writer is in the way.
4773 * So we first check if we are actually being called from a timer,
4774 * if so we abort early if a reader or writer is still in the way.
4776 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
4777 (from_inpcbfree == SCTP_NORMAL_PROC)) {
4779 * is it the timer driving us? if so are the reader/writers
4782 if (stcb->asoc.refcnt) {
4783 /* nope, reader or writer in the way */
4784 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4785 /* no asoc destroyed */
4786 SCTP_TCB_UNLOCK(stcb);
4787 #ifdef SCTP_LOG_CLOSING
4788 sctp_log_closing(inp, stcb, 8);
4793 /* now clean up any other timers */
4794 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4795 asoc->dack_timer.self = NULL;
4796 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4798 * For stream reset we don't blast this unless
4799 * it is a str-reset timer, it might be the
4800 * free-asoc timer which we DON'T want to
4803 if (asoc->strreset_timer.type == SCTP_TIMER_TYPE_STRRESET)
4804 asoc->strreset_timer.self = NULL;
4805 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4806 asoc->asconf_timer.self = NULL;
4807 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4808 asoc->autoclose_timer.self = NULL;
4809 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4810 asoc->shut_guard_timer.self = NULL;
4811 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4812 asoc->delayed_event_timer.self = NULL;
4813 /* Mobility adaptation */
4814 (void)SCTP_OS_TIMER_STOP(&asoc->delete_prim_timer.timer);
4815 asoc->delete_prim_timer.self = NULL;
4816 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4817 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4818 net->rxt_timer.self = NULL;
4819 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4820 net->pmtu_timer.self = NULL;
4821 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4822 net->hb_timer.self = NULL;
4824 /* Now the read queue needs to be cleaned up (only once) */
4825 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) {
4826 stcb->asoc.state |= SCTP_STATE_ABOUT_TO_BE_FREED;
4827 SCTP_INP_READ_LOCK(inp);
4828 TAILQ_FOREACH(sq, &inp->read_queue, next) {
4829 if (sq->stcb == stcb) {
4830 sq->do_not_ref_stcb = 1;
4831 sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
4833 * If there is no end, there never will be
4836 if (sq->end_added == 0) {
4837 /* Held for PD-API clear that. */
4838 sq->pdapi_aborted = 1;
4839 sq->held_length = 0;
4840 if (sctp_stcb_is_feature_on(inp, stcb, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) {
4842 * Need to add a PD-API
4843 * aborted indication.
4844 * Setting the control_pdapi
4845 * assures that it will be
4846 * added right after this
4851 stcb->asoc.control_pdapi = sq;
4852 strseq = (sq->sinfo_stream << 16) | sq->sinfo_ssn;
4853 sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION,
4855 SCTP_PARTIAL_DELIVERY_ABORTED,
4858 stcb->asoc.control_pdapi = NULL;
4861 /* Add an end to wake them */
4865 SCTP_INP_READ_UNLOCK(inp);
4866 if (stcb->block_entry) {
4867 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET);
4868 stcb->block_entry->error = ECONNRESET;
4869 stcb->block_entry = NULL;
4872 if ((stcb->asoc.refcnt) || (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE)) {
4874 * Someone holds a reference OR the socket is unaccepted
4877 if ((stcb->asoc.refcnt) ||
4878 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4879 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4880 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4881 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4883 SCTP_TCB_UNLOCK(stcb);
4884 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4885 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4886 /* nothing around */
4889 /* Wake any reader/writers */
4890 sctp_sorwakeup(inp, so);
4891 sctp_sowwakeup(inp, so);
4893 #ifdef SCTP_LOG_CLOSING
4894 sctp_log_closing(inp, stcb, 9);
4896 /* no asoc destroyed */
4899 #ifdef SCTP_LOG_CLOSING
4900 sctp_log_closing(inp, stcb, 10);
4903 * When I reach here, no others want to kill the assoc yet.. and I
4904 * own the lock. Now its possible an abort comes in when I do the
4905 * lock exchange below to grab all the locks to do the final take
4906 * out. to prevent this we increment the count, which will start a
4907 * timer and blow out above thus assuring us that we hold exclusive
4908 * killing of the asoc. Note that after getting back the TCB lock we
4909 * will go ahead and increment the counter back up and stop any
4910 * timer a passing stranger may have started :-S
4912 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4913 atomic_add_int(&stcb->asoc.refcnt, 1);
4915 SCTP_TCB_UNLOCK(stcb);
4916 SCTP_INP_INFO_WLOCK();
4917 SCTP_INP_WLOCK(inp);
4918 SCTP_TCB_LOCK(stcb);
4920 /* Double check the GONE flag */
4921 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4922 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4923 /* nothing around */
4926 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
4927 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4929 * For TCP type we need special handling when we are
4930 * connected. We also include the peel'ed off ones to.
4932 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4933 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED;
4934 inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED;
4937 if (so->so_rcv.sb_cc == 0) {
4938 so->so_state &= ~(SS_ISCONNECTING |
4939 SS_ISDISCONNECTING |
4943 socantrcvmore_locked(so);
4944 sctp_sowwakeup(inp, so);
4945 sctp_sorwakeup(inp, so);
4951 * Make it invalid too, that way if its about to run it will abort
4954 /* re-increment the lock */
4955 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4956 atomic_add_int(&stcb->asoc.refcnt, -1);
4958 if (stcb->asoc.refcnt) {
4959 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4960 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4961 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4962 SCTP_INP_INFO_WUNLOCK();
4963 SCTP_INP_WUNLOCK(inp);
4965 SCTP_TCB_UNLOCK(stcb);
4969 if (inp->sctp_tcbhash) {
4970 LIST_REMOVE(stcb, sctp_tcbhash);
4972 if (stcb->asoc.in_asocid_hash) {
4973 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4975 /* Now lets remove it from the list of ALL associations in the EP */
4976 LIST_REMOVE(stcb, sctp_tcblist);
4977 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4978 SCTP_INP_INCR_REF(inp);
4979 SCTP_INP_WUNLOCK(inp);
4981 /* pull from vtag hash */
4982 LIST_REMOVE(stcb, sctp_asocs);
4983 sctp_add_vtag_to_timewait(asoc->my_vtag, SCTP_BASE_SYSCTL(sctp_vtag_time_wait),
4984 inp->sctp_lport, stcb->rport);
4987 * Now restop the timers to be sure this is paranoia at is finest!
4989 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4990 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4991 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4992 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4993 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4994 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4995 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4996 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4997 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4998 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4999 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
5002 asoc->strreset_timer.type = SCTP_TIMER_TYPE_NONE;
5004 * The chunk lists and such SHOULD be empty but we check them just
5007 /* anything on the wheel needs to be removed */
5008 for (i = 0; i < asoc->streamoutcnt; i++) {
5009 struct sctp_stream_out *outs;
5011 outs = &asoc->strmout[i];
5012 /* now clean up any chunks here */
5013 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
5014 TAILQ_REMOVE(&outs->outqueue, sp, next);
5017 /* Still an open socket - report */
5018 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
5019 SCTP_NOTIFY_DATAGRAM_UNSENT,
5020 (void *)sp, SCTP_SO_LOCKED);
5023 sctp_m_freem(sp->data);
5025 sp->tail_mbuf = NULL;
5029 sctp_free_remote_addr(sp->net);
5032 sctp_free_spbufspace(stcb, asoc, sp);
5033 if (sp->holds_key_ref)
5034 sctp_auth_key_release(stcb, sp->auth_keyid, SCTP_SO_LOCKED);
5035 /* Free the zone stuff */
5036 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_strmoq), sp);
5037 SCTP_DECR_STRMOQ_COUNT();
5038 /* sa_ignore FREED_MEMORY */
5041 /* sa_ignore FREED_MEMORY */
5042 TAILQ_FOREACH_SAFE(strrst, &asoc->resetHead, next_resp, nstrrst) {
5043 TAILQ_REMOVE(&asoc->resetHead, strrst, next_resp);
5044 SCTP_FREE(strrst, SCTP_M_STRESET);
5046 TAILQ_FOREACH_SAFE(sq, &asoc->pending_reply_queue, next, nsq) {
5047 TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
5049 sctp_m_freem(sq->data);
5052 sctp_free_remote_addr(sq->whoFrom);
5055 /* Free the ctl entry */
5056 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
5057 SCTP_DECR_READQ_COUNT();
5058 /* sa_ignore FREED_MEMORY */
5060 TAILQ_FOREACH_SAFE(chk, &asoc->free_chunks, sctp_next, nchk) {
5061 TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next);
5063 sctp_m_freem(chk->data);
5066 if (chk->holds_key_ref)
5067 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5068 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5069 SCTP_DECR_CHK_COUNT();
5070 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1);
5071 asoc->free_chunk_cnt--;
5072 /* sa_ignore FREED_MEMORY */
5074 /* pending send queue SHOULD be empty */
5075 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
5076 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
5079 /* Still a socket? */
5080 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb,
5081 SCTP_NOTIFY_DATAGRAM_UNSENT, chk, SCTP_SO_LOCKED);
5084 sctp_m_freem(chk->data);
5088 if (chk->holds_key_ref)
5089 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5091 sctp_free_remote_addr(chk->whoTo);
5094 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5095 SCTP_DECR_CHK_COUNT();
5096 /* sa_ignore FREED_MEMORY */
5098 /* sent queue SHOULD be empty */
5099 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
5100 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
5103 /* Still a socket? */
5104 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb,
5105 SCTP_NOTIFY_DATAGRAM_SENT, chk, SCTP_SO_LOCKED);
5108 sctp_m_freem(chk->data);
5112 if (chk->holds_key_ref)
5113 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5114 sctp_free_remote_addr(chk->whoTo);
5115 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5116 SCTP_DECR_CHK_COUNT();
5117 /* sa_ignore FREED_MEMORY */
5119 /* control queue MAY not be empty */
5120 TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) {
5121 TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next);
5123 sctp_m_freem(chk->data);
5126 if (chk->holds_key_ref)
5127 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5128 sctp_free_remote_addr(chk->whoTo);
5129 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5130 SCTP_DECR_CHK_COUNT();
5131 /* sa_ignore FREED_MEMORY */
5133 /* ASCONF queue MAY not be empty */
5134 TAILQ_FOREACH_SAFE(chk, &asoc->asconf_send_queue, sctp_next, nchk) {
5135 TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next);
5137 sctp_m_freem(chk->data);
5140 if (chk->holds_key_ref)
5141 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5142 sctp_free_remote_addr(chk->whoTo);
5143 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5144 SCTP_DECR_CHK_COUNT();
5145 /* sa_ignore FREED_MEMORY */
5147 TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) {
5148 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
5150 sctp_m_freem(chk->data);
5153 if (chk->holds_key_ref)
5154 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5155 sctp_free_remote_addr(chk->whoTo);
5156 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5157 SCTP_DECR_CHK_COUNT();
5158 /* sa_ignore FREED_MEMORY */
5161 if (asoc->mapping_array) {
5162 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
5163 asoc->mapping_array = NULL;
5165 if (asoc->nr_mapping_array) {
5166 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
5167 asoc->nr_mapping_array = NULL;
5169 /* the stream outs */
5170 if (asoc->strmout) {
5171 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
5172 asoc->strmout = NULL;
5174 asoc->strm_realoutsize = asoc->streamoutcnt = 0;
5176 struct sctp_queued_to_read *ctl, *nctl;
5178 for (i = 0; i < asoc->streamincnt; i++) {
5179 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[i].inqueue, next, nctl) {
5180 TAILQ_REMOVE(&asoc->strmin[i].inqueue, ctl, next);
5181 sctp_free_remote_addr(ctl->whoFrom);
5183 sctp_m_freem(ctl->data);
5187 * We don't free the address here since all
5188 * the net's were freed above.
5190 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
5191 SCTP_DECR_READQ_COUNT();
5194 SCTP_FREE(asoc->strmin, SCTP_M_STRMI);
5195 asoc->strmin = NULL;
5197 asoc->streamincnt = 0;
5198 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
5200 if (SCTP_BASE_INFO(ipi_count_raddr) == 0) {
5201 panic("no net's left alloc'ed, or list points to itself");
5204 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
5205 sctp_free_remote_addr(net);
5207 LIST_FOREACH_SAFE(laddr, &asoc->sctp_restricted_addrs, sctp_nxt_addr, naddr) {
5208 /* sa_ignore FREED_MEMORY */
5209 sctp_remove_laddr(laddr);
5212 /* pending asconf (address) parameters */
5213 TAILQ_FOREACH_SAFE(aparam, &asoc->asconf_queue, next, naparam) {
5214 /* sa_ignore FREED_MEMORY */
5215 TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
5216 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
5218 TAILQ_FOREACH_SAFE(aack, &asoc->asconf_ack_sent, next, naack) {
5219 /* sa_ignore FREED_MEMORY */
5220 TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
5221 if (aack->data != NULL) {
5222 sctp_m_freem(aack->data);
5224 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
5226 /* clean up auth stuff */
5227 if (asoc->local_hmacs)
5228 sctp_free_hmaclist(asoc->local_hmacs);
5229 if (asoc->peer_hmacs)
5230 sctp_free_hmaclist(asoc->peer_hmacs);
5232 if (asoc->local_auth_chunks)
5233 sctp_free_chunklist(asoc->local_auth_chunks);
5234 if (asoc->peer_auth_chunks)
5235 sctp_free_chunklist(asoc->peer_auth_chunks);
5237 sctp_free_authinfo(&asoc->authinfo);
5239 LIST_FOREACH_SAFE(shared_key, &asoc->shared_keys, next, nshared_key) {
5240 LIST_REMOVE(shared_key, next);
5241 sctp_free_sharedkey(shared_key);
5242 /* sa_ignore FREED_MEMORY */
5245 /* Insert new items here :> */
5247 /* Get rid of LOCK */
5248 SCTP_TCB_LOCK_DESTROY(stcb);
5249 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
5250 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5251 SCTP_INP_INFO_WUNLOCK();
5252 SCTP_INP_RLOCK(inp);
5254 #ifdef SCTP_TRACK_FREED_ASOCS
5255 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5256 /* now clean up the tasoc itself */
5257 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5258 SCTP_DECR_ASOC_COUNT();
5260 LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist);
5263 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5264 SCTP_DECR_ASOC_COUNT();
5266 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5267 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5269 * If its NOT the inp_free calling us AND sctp_close
5270 * as been called, we call back...
5272 SCTP_INP_RUNLOCK(inp);
5274 * This will start the kill timer (if we are the
5275 * last one) since we hold an increment yet. But
5276 * this is the only safe way to do this since
5277 * otherwise if the socket closes at the same time
5278 * we are here we might collide in the cleanup.
5280 sctp_inpcb_free(inp,
5281 SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
5282 SCTP_CALLED_DIRECTLY_NOCMPSET);
5283 SCTP_INP_DECR_REF(inp);
5286 /* The socket is still open. */
5287 SCTP_INP_DECR_REF(inp);
5290 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5291 SCTP_INP_RUNLOCK(inp);
5294 /* destroyed the asoc */
5295 #ifdef SCTP_LOG_CLOSING
5296 sctp_log_closing(inp, NULL, 11);
5304 * determine if a destination is "reachable" based upon the addresses bound
5305 * to the current endpoint (e.g. only v4 or v6 currently bound)
5308 * FIX: if we allow assoc-level bindx(), then this needs to be fixed to use
5309 * assoc level v4/v6 flags, as the assoc *may* not have the same address
5310 * types bound as its endpoint
5313 sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
5315 struct sctp_inpcb *inp;
5319 * No locks here, the TCB, in all cases is already locked and an
5320 * assoc is up. There is either a INP lock by the caller applied (in
5321 * asconf case when deleting an address) or NOT in the HB case,
5322 * however if HB then the INP increment is up and the INP will not
5323 * be removed (on top of the fact that we have a TCB lock). So we
5324 * only want to read the sctp_flags, which is either bound-all or
5325 * not.. no protection needed since once an assoc is up you can't be
5326 * changing your binding.
5328 inp = stcb->sctp_ep;
5329 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5330 /* if bound all, destination is not restricted */
5332 * RRS: Question during lock work: Is this correct? If you
5333 * are bound-all you still might need to obey the V4--V6
5334 * flags??? IMO this bound-all stuff needs to be removed!
5338 /* NOTE: all "scope" checks are done when local addresses are added */
5339 switch (destaddr->sa_family) {
5341 answer = inp->ip_inp.inp.inp_vflag & INP_IPV6;
5344 answer = inp->ip_inp.inp.inp_vflag & INP_IPV4;
5347 /* invalid family, so it's unreachable */
5355 * update the inp_vflags on an endpoint
5358 sctp_update_ep_vflag(struct sctp_inpcb *inp)
5360 struct sctp_laddr *laddr;
5362 /* first clear the flag */
5363 inp->ip_inp.inp.inp_vflag = 0;
5364 /* set the flag based on addresses on the ep list */
5365 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5366 if (laddr->ifa == NULL) {
5367 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
5371 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
5374 switch (laddr->ifa->address.sa.sa_family) {
5377 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5382 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5392 * Add the address to the endpoint local address list There is nothing to be
5393 * done if we are bound to all addresses
5396 sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
5398 struct sctp_laddr *laddr;
5403 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5404 /* You are already bound to all. You have it already */
5408 if (ifa->address.sa.sa_family == AF_INET6) {
5409 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5410 /* Can't bind a non-useable addr. */
5415 /* first, is it already present? */
5416 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5417 if (laddr->ifa == ifa) {
5424 /* Not in the ep list */
5425 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action);
5429 /* update inp_vflag flags */
5430 switch (ifa->address.sa.sa_family) {
5433 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5438 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5450 * select a new (hopefully reachable) destination net (should only be used
5451 * when we deleted an ep addr that is the only usable source address to reach
5452 * the destination net)
5455 sctp_select_primary_destination(struct sctp_tcb *stcb)
5457 struct sctp_nets *net;
5459 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5460 /* for now, we'll just pick the first reachable one we find */
5461 if (net->dest_state & SCTP_ADDR_UNCONFIRMED)
5463 if (sctp_destination_is_reachable(stcb,
5464 (struct sockaddr *)&net->ro._l_addr)) {
5465 /* found a reachable destination */
5466 stcb->asoc.primary_destination = net;
5469 /* I can't there from here! ...we're gonna die shortly... */
5474 * Delete the address from the endpoint local address list There is nothing
5475 * to be done if we are bound to all addresses
5478 sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa)
5480 struct sctp_laddr *laddr;
5484 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5485 /* You are already bound to all. You have it already */
5488 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5489 if (laddr->ifa == ifa) {
5494 if (fnd && (inp->laddr_count < 2)) {
5495 /* can't delete unless there are at LEAST 2 addresses */
5500 * clean up any use of this address go through our
5501 * associations and clear any last_used_address that match
5502 * this one for each assoc, see if a new primary_destination
5505 struct sctp_tcb *stcb;
5507 /* clean up "next_addr_touse" */
5508 if (inp->next_addr_touse == laddr)
5509 /* delete this address */
5510 inp->next_addr_touse = NULL;
5512 /* clean up "last_used_address" */
5513 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5514 struct sctp_nets *net;
5516 SCTP_TCB_LOCK(stcb);
5517 if (stcb->asoc.last_used_address == laddr)
5518 /* delete this address */
5519 stcb->asoc.last_used_address = NULL;
5521 * Now spin through all the nets and purge any ref
5524 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5525 if (net->ro._s_addr &&
5526 (net->ro._s_addr->ifa == laddr->ifa)) {
5527 /* Yep, purge src address selected */
5530 /* delete this address if cached */
5534 net->ro.ro_rt = NULL;
5536 sctp_free_ifa(net->ro._s_addr);
5537 net->ro._s_addr = NULL;
5538 net->src_addr_selected = 0;
5541 SCTP_TCB_UNLOCK(stcb);
5542 } /* for each tcb */
5543 /* remove it from the ep list */
5544 sctp_remove_laddr(laddr);
5546 /* update inp_vflag flags */
5547 sctp_update_ep_vflag(inp);
5553 * Add the address to the TCB local address restricted list.
5554 * This is a "pending" address list (eg. addresses waiting for an
5555 * ASCONF-ACK response) and cannot be used as a valid source address.
5558 sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5560 struct sctp_inpcb *inp;
5561 struct sctp_laddr *laddr;
5562 struct sctpladdr *list;
5565 * Assumes TCB is locked.. and possibly the INP. May need to
5566 * confirm/fix that if we need it and is not the case.
5568 list = &stcb->asoc.sctp_restricted_addrs;
5570 inp = stcb->sctp_ep;
5572 if (ifa->address.sa.sa_family == AF_INET6) {
5573 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5574 /* Can't bind a non-existent addr. */
5579 /* does the address already exist? */
5580 LIST_FOREACH(laddr, list, sctp_nxt_addr) {
5581 if (laddr->ifa == ifa) {
5586 /* add to the list */
5587 (void)sctp_insert_laddr(list, ifa, 0);
5592 * insert an laddr entry with the given ifa for the desired list
5595 sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
5597 struct sctp_laddr *laddr;
5599 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
5600 if (laddr == NULL) {
5601 /* out of memory? */
5602 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
5605 SCTP_INCR_LADDR_COUNT();
5606 bzero(laddr, sizeof(*laddr));
5607 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
5609 laddr->action = act;
5610 atomic_add_int(&ifa->refcount, 1);
5612 LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr);
5618 * Remove an laddr entry from the local address list (on an assoc)
5621 sctp_remove_laddr(struct sctp_laddr *laddr)
5624 /* remove from the list */
5625 LIST_REMOVE(laddr, sctp_nxt_addr);
5626 sctp_free_ifa(laddr->ifa);
5627 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr);
5628 SCTP_DECR_LADDR_COUNT();
5632 * Remove a local address from the TCB local address restricted list
5635 sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5637 struct sctp_inpcb *inp;
5638 struct sctp_laddr *laddr;
5641 * This is called by asconf work. It is assumed that a) The TCB is
5642 * locked and b) The INP is locked. This is true in as much as I can
5643 * trace through the entry asconf code where I did these locks.
5644 * Again, the ASCONF code is a bit different in that it does lock
5645 * the INP during its work often times. This must be since we don't
5646 * want other proc's looking up things while what they are looking
5647 * up is changing :-D
5650 inp = stcb->sctp_ep;
5651 /* if subset bound and don't allow ASCONF's, can't delete last */
5652 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
5653 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
5654 if (stcb->sctp_ep->laddr_count < 2) {
5655 /* can't delete last address */
5659 LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
5660 /* remove the address if it exists */
5661 if (laddr->ifa == NULL)
5663 if (laddr->ifa == ifa) {
5664 sctp_remove_laddr(laddr);
5669 /* address not found! */
5674 * Temporarily remove for __APPLE__ until we use the Tiger equivalents
5677 static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;
5678 static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR;
5682 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5683 struct sctp_mcore_ctrl *sctp_mcore_workers = NULL;
5684 int *sctp_cpuarry = NULL;
5686 sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use)
5688 /* Queue a packet to a processor for the specified core */
5689 struct sctp_mcore_queue *qent;
5690 struct sctp_mcore_ctrl *wkq;
5693 if (sctp_mcore_workers == NULL) {
5694 /* Something went way bad during setup */
5695 sctp_input_with_port(m, off, 0);
5698 SCTP_MALLOC(qent, struct sctp_mcore_queue *,
5699 (sizeof(struct sctp_mcore_queue)),
5702 /* This is trouble */
5703 sctp_input_with_port(m, off, 0);
5710 wkq = &sctp_mcore_workers[cpu_to_use];
5711 SCTP_MCORE_QLOCK(wkq);
5713 TAILQ_INSERT_TAIL(&wkq->que, qent, next);
5714 if (wkq->running == 0) {
5717 SCTP_MCORE_QUNLOCK(wkq);
5719 wakeup(&wkq->running);
5724 sctp_mcore_thread(void *arg)
5727 struct sctp_mcore_ctrl *wkq;
5728 struct sctp_mcore_queue *qent;
5730 wkq = (struct sctp_mcore_ctrl *)arg;
5734 /* Wait for first tickle */
5735 SCTP_MCORE_LOCK(wkq);
5737 msleep(&wkq->running,
5739 0, "wait for pkt", 0);
5740 SCTP_MCORE_UNLOCK(wkq);
5742 /* Bind to our cpu */
5743 thread_lock(curthread);
5744 sched_bind(curthread, wkq->cpuid);
5745 thread_unlock(curthread);
5747 /* Now lets start working */
5748 SCTP_MCORE_LOCK(wkq);
5749 /* Now grab lock and go */
5751 SCTP_MCORE_QLOCK(wkq);
5754 qent = TAILQ_FIRST(&wkq->que);
5756 TAILQ_REMOVE(&wkq->que, qent, next);
5757 SCTP_MCORE_QUNLOCK(wkq);
5758 CURVNET_SET(qent->vn);
5762 SCTP_FREE(qent, SCTP_M_MCORE);
5764 sctp_input_with_port(m, off, 0);
5766 printf("V6 not yet supported\n");
5770 SCTP_MCORE_QLOCK(wkq);
5773 if (!TAILQ_EMPTY(&wkq->que)) {
5776 SCTP_MCORE_QUNLOCK(wkq);
5777 msleep(&wkq->running,
5779 0, "wait for pkt", 0);
5784 sctp_startup_mcore_threads(void)
5791 if (sctp_mcore_workers != NULL) {
5793 * Already been here in some previous vnet?
5797 SCTP_MALLOC(sctp_mcore_workers, struct sctp_mcore_ctrl *,
5798 ((mp_maxid + 1) * sizeof(struct sctp_mcore_ctrl)),
5800 if (sctp_mcore_workers == NULL) {
5804 memset(sctp_mcore_workers, 0, ((mp_maxid + 1) *
5805 sizeof(struct sctp_mcore_ctrl)));
5806 /* Init the structures */
5807 for (i = 0; i <= mp_maxid; i++) {
5808 TAILQ_INIT(&sctp_mcore_workers[i].que);
5809 SCTP_MCORE_LOCK_INIT(&sctp_mcore_workers[i]);
5810 SCTP_MCORE_QLOCK_INIT(&sctp_mcore_workers[i]);
5811 sctp_mcore_workers[i].cpuid = i;
5813 if (sctp_cpuarry == NULL) {
5814 SCTP_MALLOC(sctp_cpuarry, int *,
5815 (mp_ncpus * sizeof(int)),
5819 sctp_cpuarry[i] = cpu;
5823 /* Now start them all */
5825 (void)kproc_create(sctp_mcore_thread,
5826 (void *)&sctp_mcore_workers[cpu],
5827 &sctp_mcore_workers[cpu].thread_proc,
5841 * SCTP initialization for the PCB structures should be called by
5842 * the sctp_init() funciton.
5847 if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) {
5848 /* error I was called twice */
5851 SCTP_BASE_VAR(sctp_pcb_initialized) = 1;
5853 #if defined(SCTP_LOCAL_TRACE_BUF)
5854 bzero(&SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));
5856 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5857 SCTP_MALLOC(SCTP_BASE_STATS, struct sctpstat *,
5858 ((mp_maxid + 1) * sizeof(struct sctpstat)),
5861 (void)SCTP_GETTIME_TIMEVAL(&tv);
5862 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5863 bzero(SCTP_BASE_STATS, (sizeof(struct sctpstat) * (mp_maxid + 1)));
5864 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t) tv.tv_sec;
5865 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t) tv.tv_usec;
5867 bzero(&SCTP_BASE_STATS, sizeof(struct sctpstat));
5868 SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t) tv.tv_sec;
5869 SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t) tv.tv_usec;
5871 /* init the empty list of (All) Endpoints */
5872 LIST_INIT(&SCTP_BASE_INFO(listhead));
5875 /* init the hash table of endpoints */
5876 TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize));
5877 TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize));
5878 TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale));
5879 SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31),
5880 &SCTP_BASE_INFO(hashasocmark));
5881 SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5882 &SCTP_BASE_INFO(hashmark));
5883 SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5884 &SCTP_BASE_INFO(hashtcpmark));
5885 SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize);
5888 SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH,
5889 &SCTP_BASE_INFO(hashvrfmark));
5891 SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE,
5892 &SCTP_BASE_INFO(vrf_ifn_hashmark));
5893 /* init the zones */
5895 * FIX ME: Should check for NULL returns, but if it does fail we are
5896 * doomed to panic anyways... add later maybe.
5898 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep",
5899 sizeof(struct sctp_inpcb), maxsockets);
5901 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc",
5902 sizeof(struct sctp_tcb), sctp_max_number_of_assoc);
5904 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr",
5905 sizeof(struct sctp_laddr),
5906 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5908 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr",
5909 sizeof(struct sctp_nets),
5910 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5912 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk",
5913 sizeof(struct sctp_tmit_chunk),
5914 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5916 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq",
5917 sizeof(struct sctp_queued_to_read),
5918 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5920 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out",
5921 sizeof(struct sctp_stream_queue_pending),
5922 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5924 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf",
5925 sizeof(struct sctp_asconf),
5926 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5928 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack",
5929 sizeof(struct sctp_asconf_ack),
5930 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5933 /* Master Lock INIT for info structure */
5934 SCTP_INP_INFO_LOCK_INIT();
5935 SCTP_STATLOG_INIT_LOCK();
5937 SCTP_IPI_COUNT_INIT();
5938 SCTP_IPI_ADDR_INIT();
5939 #ifdef SCTP_PACKET_LOGGING
5940 SCTP_IP_PKTLOG_INIT();
5942 LIST_INIT(&SCTP_BASE_INFO(addr_wq));
5944 SCTP_WQ_ADDR_INIT();
5945 /* not sure if we need all the counts */
5946 SCTP_BASE_INFO(ipi_count_ep) = 0;
5947 /* assoc/tcb zone info */
5948 SCTP_BASE_INFO(ipi_count_asoc) = 0;
5949 /* local addrlist zone info */
5950 SCTP_BASE_INFO(ipi_count_laddr) = 0;
5951 /* remote addrlist zone info */
5952 SCTP_BASE_INFO(ipi_count_raddr) = 0;
5954 SCTP_BASE_INFO(ipi_count_chunk) = 0;
5956 /* socket queue zone info */
5957 SCTP_BASE_INFO(ipi_count_readq) = 0;
5959 /* stream out queue cont */
5960 SCTP_BASE_INFO(ipi_count_strmoq) = 0;
5962 SCTP_BASE_INFO(ipi_free_strmoq) = 0;
5963 SCTP_BASE_INFO(ipi_free_chunks) = 0;
5965 SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer));
5967 /* Init the TIMEWAIT list */
5968 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5969 LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]);
5972 sctp_startup_iterator();
5974 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5975 sctp_startup_mcore_threads();
5979 * INIT the default VRF which for BSD is the only one, other O/S's
5980 * may have more. But initially they must start with one and then
5981 * add the VRF's as addresses are added.
5983 sctp_init_vrf_list(SCTP_DEFAULT_VRF);
5987 * Assumes that the SCTP_BASE_INFO() lock is NOT held.
5990 sctp_pcb_finish(void)
5992 struct sctp_vrflist *vrf_bucket;
5993 struct sctp_vrf *vrf, *nvrf;
5994 struct sctp_ifn *ifn, *nifn;
5995 struct sctp_ifa *ifa, *nifa;
5996 struct sctpvtaghead *chain;
5997 struct sctp_tagblock *twait_block, *prev_twait_block;
5998 struct sctp_laddr *wi, *nwi;
6002 * Free BSD the it thread never exits but we do clean up. The only
6003 * way freebsd reaches here if we have VRF's but we still add the
6004 * ifdef to make it compile on old versions.
6007 struct sctp_iterator *it, *nit;
6009 SCTP_IPI_ITERATOR_WQ_LOCK();
6010 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
6011 if (it->vn != curvnet) {
6014 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
6015 if (it->function_atend != NULL) {
6016 (*it->function_atend) (it->pointer, it->val);
6018 SCTP_FREE(it, SCTP_M_ITER);
6020 SCTP_IPI_ITERATOR_WQ_UNLOCK();
6021 SCTP_ITERATOR_LOCK();
6022 if ((sctp_it_ctl.cur_it) &&
6023 (sctp_it_ctl.cur_it->vn == curvnet)) {
6024 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
6026 SCTP_ITERATOR_UNLOCK();
6029 SCTP_OS_TIMER_STOP(&SCTP_BASE_INFO(addr_wq_timer.timer));
6030 SCTP_WQ_ADDR_LOCK();
6031 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
6032 LIST_REMOVE(wi, sctp_nxt_addr);
6033 SCTP_DECR_LADDR_COUNT();
6034 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi);
6036 SCTP_WQ_ADDR_UNLOCK();
6039 * free the vrf/ifn/ifa lists and hashes (be sure address monitor is
6042 vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))];
6043 LIST_FOREACH_SAFE(vrf, vrf_bucket, next_vrf, nvrf) {
6044 LIST_FOREACH_SAFE(ifn, &vrf->ifnlist, next_ifn, nifn) {
6045 LIST_FOREACH_SAFE(ifa, &ifn->ifalist, next_ifa, nifa) {
6047 LIST_REMOVE(ifa, next_bucket);
6048 LIST_REMOVE(ifa, next_ifa);
6049 SCTP_FREE(ifa, SCTP_M_IFA);
6052 LIST_REMOVE(ifn, next_bucket);
6053 LIST_REMOVE(ifn, next_ifn);
6054 SCTP_FREE(ifn, SCTP_M_IFN);
6056 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
6058 LIST_REMOVE(vrf, next_vrf);
6059 SCTP_FREE(vrf, SCTP_M_VRF);
6061 /* free the vrf hashes */
6062 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark));
6063 SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark));
6066 * free the TIMEWAIT list elements malloc'd in the function
6067 * sctp_add_vtag_to_timewait()...
6069 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
6070 chain = &SCTP_BASE_INFO(vtag_timewait)[i];
6071 if (!LIST_EMPTY(chain)) {
6072 prev_twait_block = NULL;
6073 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6074 if (prev_twait_block) {
6075 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
6077 prev_twait_block = twait_block;
6079 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
6083 /* free the locks and mutexes */
6084 #ifdef SCTP_PACKET_LOGGING
6085 SCTP_IP_PKTLOG_DESTROY();
6087 SCTP_IPI_ADDR_DESTROY();
6088 SCTP_STATLOG_DESTROY();
6089 SCTP_INP_INFO_LOCK_DESTROY();
6091 SCTP_WQ_ADDR_DESTROY();
6093 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep));
6094 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc));
6095 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr));
6096 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net));
6097 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk));
6098 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq));
6099 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq));
6100 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf));
6101 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack));
6102 /* Get rid of other stuff to */
6103 if (SCTP_BASE_INFO(sctp_asochash) != NULL)
6104 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark));
6105 if (SCTP_BASE_INFO(sctp_ephash) != NULL)
6106 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark));
6107 if (SCTP_BASE_INFO(sctp_tcpephash) != NULL)
6108 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark));
6109 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
6110 SCTP_FREE(SCTP_BASE_STATS, SCTP_M_MCORE);
6116 sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m,
6117 int iphlen, int offset, int limit, struct sctphdr *sh,
6118 struct sockaddr *altsa)
6121 * grub through the INIT pulling addresses and loading them to the
6122 * nets structure in the asoc. The from address in the mbuf should
6123 * also be loaded (if it is not already). This routine can be called
6124 * with either INIT or INIT-ACK's as long as the m points to the IP
6125 * packet and the offset points to the beginning of the parameters.
6127 struct sctp_inpcb *inp, *l_inp;
6128 struct sctp_nets *net, *nnet, *net_tmp;
6130 struct sctp_paramhdr *phdr, parm_buf;
6131 struct sctp_tcb *stcb_tmp;
6132 uint16_t ptype, plen;
6133 struct sockaddr *sa;
6134 struct sockaddr_storage dest_store;
6135 struct sockaddr *local_sa = (struct sockaddr *)&dest_store;
6136 uint8_t random_store[SCTP_PARAM_BUFFER_SIZE];
6137 struct sctp_auth_random *p_random = NULL;
6138 uint16_t random_len = 0;
6139 uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE];
6140 struct sctp_auth_hmac_algo *hmacs = NULL;
6141 uint16_t hmacs_len = 0;
6142 uint8_t saw_asconf = 0;
6143 uint8_t saw_asconf_ack = 0;
6144 uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE];
6145 struct sctp_auth_chunk_list *chunks = NULL;
6146 uint16_t num_chunks = 0;
6147 sctp_key_t *new_key;
6149 int got_random = 0, got_hmacs = 0, got_chklist = 0;
6150 uint8_t ecn_allowed;
6153 struct sockaddr_in sin;
6157 struct sockaddr_in6 sin6;
6161 /* First get the destination address setup too. */
6163 memset(&sin, 0, sizeof(sin));
6164 sin.sin_family = AF_INET;
6165 sin.sin_len = sizeof(sin);
6166 sin.sin_port = stcb->rport;
6169 memset(&sin6, 0, sizeof(sin6));
6170 sin6.sin6_family = AF_INET6;
6171 sin6.sin6_len = sizeof(struct sockaddr_in6);
6172 sin6.sin6_port = stcb->rport;
6174 iph = mtod(m, struct ip *);
6175 switch (iph->ip_v) {
6180 struct sockaddr_in *sin_2;
6182 sin_2 = (struct sockaddr_in *)(local_sa);
6183 memset(sin_2, 0, sizeof(sin));
6184 sin_2->sin_family = AF_INET;
6185 sin_2->sin_len = sizeof(sin);
6186 sin_2->sin_port = sh->dest_port;
6187 sin_2->sin_addr.s_addr = iph->ip_dst.s_addr;
6190 * For cookies we use the src address NOT
6191 * from the packet but from the original
6196 sin.sin_addr = iph->ip_src;
6197 sa = (struct sockaddr *)&sin;
6203 case IPV6_VERSION >> 4:
6206 struct ip6_hdr *ip6;
6207 struct sockaddr_in6 *sin6_2;
6209 ip6 = mtod(m, struct ip6_hdr *);
6210 sin6_2 = (struct sockaddr_in6 *)(local_sa);
6211 memset(sin6_2, 0, sizeof(sin6));
6212 sin6_2->sin6_family = AF_INET6;
6213 sin6_2->sin6_len = sizeof(struct sockaddr_in6);
6214 sin6_2->sin6_port = sh->dest_port;
6215 sin6_2->sin6_addr = ip6->ip6_dst;
6218 * For cookies we use the src address NOT
6219 * from the packet but from the original
6224 sin6.sin6_addr = ip6->ip6_src;
6225 sa = (struct sockaddr *)&sin6;
6234 /* Turn off ECN until we get through all params */
6236 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
6237 /* mark all addresses that we have currently on the list */
6238 net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC;
6240 /* does the source address already exist? if so skip it */
6241 l_inp = inp = stcb->sctp_ep;
6243 atomic_add_int(&stcb->asoc.refcnt, 1);
6244 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, local_sa, stcb);
6245 atomic_add_int(&stcb->asoc.refcnt, -1);
6247 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) {
6248 /* we must add the source address */
6249 /* no scope set here since we have a tcb already. */
6250 switch (sa->sa_family) {
6253 if (stcb->asoc.ipv4_addr_legal) {
6254 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) {
6262 if (stcb->asoc.ipv6_addr_legal) {
6263 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
6273 if (net_tmp != NULL && stcb_tmp == stcb) {
6274 net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC;
6275 } else if (stcb_tmp != stcb) {
6276 /* It belongs to another association? */
6278 SCTP_TCB_UNLOCK(stcb_tmp);
6282 if (stcb->asoc.state == 0) {
6283 /* the assoc was freed? */
6287 * peer must explicitly turn this on. This may have been initialized
6288 * to be "on" in order to allow local addr changes while INIT's are
6291 stcb->asoc.peer_supports_asconf = 0;
6292 /* now we must go through each of the params. */
6293 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
6295 ptype = ntohs(phdr->param_type);
6296 plen = ntohs(phdr->param_length);
6298 * printf("ptype => %0x, plen => %d\n", (uint32_t)ptype,
6301 if (offset + plen > limit) {
6308 if (ptype == SCTP_IPV4_ADDRESS) {
6309 if (stcb->asoc.ipv4_addr_legal) {
6310 struct sctp_ipv4addr_param *p4, p4_buf;
6312 /* ok get the v4 address and check/add */
6313 phdr = sctp_get_next_param(m, offset,
6314 (struct sctp_paramhdr *)&p4_buf,
6316 if (plen != sizeof(struct sctp_ipv4addr_param) ||
6320 p4 = (struct sctp_ipv4addr_param *)phdr;
6321 sin.sin_addr.s_addr = p4->addr;
6322 if (IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) {
6323 /* Skip multi-cast addresses */
6326 if ((sin.sin_addr.s_addr == INADDR_BROADCAST) ||
6327 (sin.sin_addr.s_addr == INADDR_ANY)) {
6330 sa = (struct sockaddr *)&sin;
6331 inp = stcb->sctp_ep;
6332 atomic_add_int(&stcb->asoc.refcnt, 1);
6333 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6335 atomic_add_int(&stcb->asoc.refcnt, -1);
6337 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) ||
6339 /* we must add the source address */
6341 * no scope set since we have a tcb
6346 * we must validate the state again
6350 if (stcb->asoc.state == 0) {
6351 /* the assoc was freed? */
6354 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) {
6357 } else if (stcb_tmp == stcb) {
6358 if (stcb->asoc.state == 0) {
6359 /* the assoc was freed? */
6365 ~SCTP_ADDR_NOT_IN_ASSOC;
6369 * strange, address is in another
6370 * assoc? straighten out locks.
6373 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6378 sctp_abort_an_association(stcb_tmp->sctp_ep,
6379 stcb_tmp, 1, NULL, 0);
6382 SCTP_TCB_UNLOCK(stcb_tmp);
6384 if (stcb->asoc.state == 0) {
6385 /* the assoc was freed? */
6394 if (ptype == SCTP_IPV6_ADDRESS) {
6395 if (stcb->asoc.ipv6_addr_legal) {
6396 /* ok get the v6 address and check/add */
6397 struct sctp_ipv6addr_param *p6, p6_buf;
6399 phdr = sctp_get_next_param(m, offset,
6400 (struct sctp_paramhdr *)&p6_buf,
6402 if (plen != sizeof(struct sctp_ipv6addr_param) ||
6406 p6 = (struct sctp_ipv6addr_param *)phdr;
6407 memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
6409 if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) {
6410 /* Skip multi-cast addresses */
6413 if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) {
6415 * Link local make no sense without
6420 sa = (struct sockaddr *)&sin6;
6421 inp = stcb->sctp_ep;
6422 atomic_add_int(&stcb->asoc.refcnt, 1);
6423 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6425 atomic_add_int(&stcb->asoc.refcnt, -1);
6426 if (stcb_tmp == NULL &&
6427 (inp == stcb->sctp_ep || inp == NULL)) {
6429 * we must validate the state again
6433 if (stcb->asoc.state == 0) {
6434 /* the assoc was freed? */
6438 * we must add the address, no scope
6441 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) {
6444 } else if (stcb_tmp == stcb) {
6446 * we must validate the state again
6449 if (stcb->asoc.state == 0) {
6450 /* the assoc was freed? */
6456 ~SCTP_ADDR_NOT_IN_ASSOC;
6460 * strange, address is in another
6461 * assoc? straighten out locks.
6464 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6469 sctp_abort_an_association(stcb_tmp->sctp_ep,
6470 stcb_tmp, 1, NULL, 0);
6473 SCTP_TCB_UNLOCK(stcb_tmp);
6475 if (stcb->asoc.state == 0) {
6476 /* the assoc was freed? */
6484 if (ptype == SCTP_ECN_CAPABLE) {
6486 } else if (ptype == SCTP_ULP_ADAPTATION) {
6487 if (stcb->asoc.state != SCTP_STATE_OPEN) {
6488 struct sctp_adaptation_layer_indication ai,
6491 phdr = sctp_get_next_param(m, offset,
6492 (struct sctp_paramhdr *)&ai, sizeof(ai));
6493 aip = (struct sctp_adaptation_layer_indication *)phdr;
6495 stcb->asoc.peers_adaptation = ntohl(aip->indication);
6496 stcb->asoc.adaptation_needed = 1;
6499 } else if (ptype == SCTP_SET_PRIM_ADDR) {
6500 struct sctp_asconf_addr_param lstore, *fee;
6502 struct sockaddr *lsa = NULL;
6505 struct sctp_asconf_addrv4_param *fii;
6509 stcb->asoc.peer_supports_asconf = 1;
6510 if (plen > sizeof(lstore)) {
6513 phdr = sctp_get_next_param(m, offset,
6514 (struct sctp_paramhdr *)&lstore,
6515 min(plen, sizeof(lstore)));
6519 fee = (struct sctp_asconf_addr_param *)phdr;
6520 lptype = ntohs(fee->addrp.ph.param_type);
6523 case SCTP_IPV4_ADDRESS:
6525 sizeof(struct sctp_asconf_addrv4_param)) {
6526 SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n",
6527 (int)sizeof(struct sctp_asconf_addrv4_param),
6530 fii = (struct sctp_asconf_addrv4_param *)fee;
6531 sin.sin_addr.s_addr = fii->addrp.addr;
6532 lsa = (struct sockaddr *)&sin;
6537 case SCTP_IPV6_ADDRESS:
6539 sizeof(struct sctp_asconf_addr_param)) {
6540 SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n",
6541 (int)sizeof(struct sctp_asconf_addr_param),
6544 memcpy(sin6.sin6_addr.s6_addr,
6546 sizeof(fee->addrp.addr));
6547 lsa = (struct sockaddr *)&sin6;
6555 (void)sctp_set_primary_addr(stcb, sa, NULL);
6557 } else if (ptype == SCTP_HAS_NAT_SUPPORT) {
6558 stcb->asoc.peer_supports_nat = 1;
6559 } else if (ptype == SCTP_PRSCTP_SUPPORTED) {
6560 /* Peer supports pr-sctp */
6561 stcb->asoc.peer_supports_prsctp = 1;
6562 } else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) {
6563 /* A supported extension chunk */
6564 struct sctp_supported_chunk_types_param *pr_supported;
6565 uint8_t local_store[SCTP_PARAM_BUFFER_SIZE];
6568 phdr = sctp_get_next_param(m, offset,
6569 (struct sctp_paramhdr *)&local_store, min(sizeof(local_store), plen));
6573 stcb->asoc.peer_supports_asconf = 0;
6574 stcb->asoc.peer_supports_prsctp = 0;
6575 stcb->asoc.peer_supports_pktdrop = 0;
6576 stcb->asoc.peer_supports_strreset = 0;
6577 stcb->asoc.peer_supports_nr_sack = 0;
6578 stcb->asoc.peer_supports_auth = 0;
6579 pr_supported = (struct sctp_supported_chunk_types_param *)phdr;
6580 num_ent = plen - sizeof(struct sctp_paramhdr);
6581 for (i = 0; i < num_ent; i++) {
6582 switch (pr_supported->chunk_types[i]) {
6584 case SCTP_ASCONF_ACK:
6585 stcb->asoc.peer_supports_asconf = 1;
6587 case SCTP_FORWARD_CUM_TSN:
6588 stcb->asoc.peer_supports_prsctp = 1;
6590 case SCTP_PACKET_DROPPED:
6591 stcb->asoc.peer_supports_pktdrop = 1;
6593 case SCTP_NR_SELECTIVE_ACK:
6594 stcb->asoc.peer_supports_nr_sack = 1;
6596 case SCTP_STREAM_RESET:
6597 stcb->asoc.peer_supports_strreset = 1;
6599 case SCTP_AUTHENTICATION:
6600 stcb->asoc.peer_supports_auth = 1;
6603 /* one I have not learned yet */
6608 } else if (ptype == SCTP_RANDOM) {
6609 if (plen > sizeof(random_store))
6612 /* already processed a RANDOM */
6615 phdr = sctp_get_next_param(m, offset,
6616 (struct sctp_paramhdr *)random_store,
6617 min(sizeof(random_store), plen));
6620 p_random = (struct sctp_auth_random *)phdr;
6621 random_len = plen - sizeof(*p_random);
6622 /* enforce the random length */
6623 if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) {
6624 SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n");
6628 } else if (ptype == SCTP_HMAC_LIST) {
6632 if (plen > sizeof(hmacs_store))
6635 /* already processed a HMAC list */
6638 phdr = sctp_get_next_param(m, offset,
6639 (struct sctp_paramhdr *)hmacs_store,
6640 min(plen, sizeof(hmacs_store)));
6643 hmacs = (struct sctp_auth_hmac_algo *)phdr;
6644 hmacs_len = plen - sizeof(*hmacs);
6645 num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]);
6646 /* validate the hmac list */
6647 if (sctp_verify_hmac_param(hmacs, num_hmacs)) {
6650 if (stcb->asoc.peer_hmacs != NULL)
6651 sctp_free_hmaclist(stcb->asoc.peer_hmacs);
6652 stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs);
6653 if (stcb->asoc.peer_hmacs != NULL) {
6654 for (i = 0; i < num_hmacs; i++) {
6655 (void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs,
6656 ntohs(hmacs->hmac_ids[i]));
6660 } else if (ptype == SCTP_CHUNK_LIST) {
6663 if (plen > sizeof(chunks_store))
6666 /* already processed a Chunks list */
6669 phdr = sctp_get_next_param(m, offset,
6670 (struct sctp_paramhdr *)chunks_store,
6671 min(plen, sizeof(chunks_store)));
6674 chunks = (struct sctp_auth_chunk_list *)phdr;
6675 num_chunks = plen - sizeof(*chunks);
6676 if (stcb->asoc.peer_auth_chunks != NULL)
6677 sctp_clear_chunklist(stcb->asoc.peer_auth_chunks);
6679 stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist();
6680 for (i = 0; i < num_chunks; i++) {
6681 (void)sctp_auth_add_chunk(chunks->chunk_types[i],
6682 stcb->asoc.peer_auth_chunks);
6683 /* record asconf/asconf-ack if listed */
6684 if (chunks->chunk_types[i] == SCTP_ASCONF)
6686 if (chunks->chunk_types[i] == SCTP_ASCONF_ACK)
6691 } else if ((ptype == SCTP_HEARTBEAT_INFO) ||
6692 (ptype == SCTP_STATE_COOKIE) ||
6693 (ptype == SCTP_UNRECOG_PARAM) ||
6694 (ptype == SCTP_COOKIE_PRESERVE) ||
6695 (ptype == SCTP_SUPPORTED_ADDRTYPE) ||
6696 (ptype == SCTP_ADD_IP_ADDRESS) ||
6697 (ptype == SCTP_DEL_IP_ADDRESS) ||
6698 (ptype == SCTP_ERROR_CAUSE_IND) ||
6699 (ptype == SCTP_SUCCESS_REPORT)) {
6702 if ((ptype & 0x8000) == 0x0000) {
6704 * must stop processing the rest of the
6705 * param's. Any report bits were handled
6707 * sctp_arethere_unrecognized_parameters()
6708 * when the INIT or INIT-ACK was first seen.
6715 offset += SCTP_SIZE32(plen);
6716 if (offset >= limit) {
6719 phdr = sctp_get_next_param(m, offset, &parm_buf,
6722 /* Now check to see if we need to purge any addresses */
6723 TAILQ_FOREACH_SAFE(net, &stcb->asoc.nets, sctp_next, nnet) {
6724 if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) ==
6725 SCTP_ADDR_NOT_IN_ASSOC) {
6726 /* This address has been removed from the asoc */
6727 /* remove and free it */
6728 stcb->asoc.numnets--;
6729 TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next);
6730 sctp_free_remote_addr(net);
6731 if (net == stcb->asoc.primary_destination) {
6732 stcb->asoc.primary_destination = NULL;
6733 sctp_select_primary_destination(stcb);
6737 if (ecn_allowed == 0) {
6738 stcb->asoc.ecn_allowed = 0;
6740 /* validate authentication required parameters */
6741 if (got_random && got_hmacs) {
6742 stcb->asoc.peer_supports_auth = 1;
6744 stcb->asoc.peer_supports_auth = 0;
6746 if (!stcb->asoc.peer_supports_auth && got_chklist) {
6747 /* peer does not support auth but sent a chunks list? */
6750 if (!SCTP_BASE_SYSCTL(sctp_asconf_auth_nochk) && stcb->asoc.peer_supports_asconf &&
6751 !stcb->asoc.peer_supports_auth) {
6752 /* peer supports asconf but not auth? */
6754 } else if ((stcb->asoc.peer_supports_asconf) && (stcb->asoc.peer_supports_auth) &&
6755 ((saw_asconf == 0) || (saw_asconf_ack == 0))) {
6758 /* concatenate the full random key */
6759 keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len;
6760 if (chunks != NULL) {
6761 keylen += sizeof(*chunks) + num_chunks;
6763 new_key = sctp_alloc_key(keylen);
6764 if (new_key != NULL) {
6765 /* copy in the RANDOM */
6766 if (p_random != NULL) {
6767 keylen = sizeof(*p_random) + random_len;
6768 bcopy(p_random, new_key->key, keylen);
6770 /* append in the AUTH chunks */
6771 if (chunks != NULL) {
6772 bcopy(chunks, new_key->key + keylen,
6773 sizeof(*chunks) + num_chunks);
6774 keylen += sizeof(*chunks) + num_chunks;
6776 /* append in the HMACs */
6777 if (hmacs != NULL) {
6778 bcopy(hmacs, new_key->key + keylen,
6779 sizeof(*hmacs) + hmacs_len);
6782 /* failed to get memory for the key */
6785 if (stcb->asoc.authinfo.peer_random != NULL)
6786 sctp_free_key(stcb->asoc.authinfo.peer_random);
6787 stcb->asoc.authinfo.peer_random = new_key;
6788 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid);
6789 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid);
6795 sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa,
6796 struct sctp_nets *net)
6798 /* make sure the requested primary address exists in the assoc */
6799 if (net == NULL && sa)
6800 net = sctp_findnet(stcb, sa);
6803 /* didn't find the requested primary address! */
6806 /* set the primary address */
6807 if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
6808 /* Must be confirmed, so queue to set */
6809 net->dest_state |= SCTP_ADDR_REQ_PRIMARY;
6812 stcb->asoc.primary_destination = net;
6813 if (!(net->dest_state & SCTP_ADDR_PF) && (stcb->asoc.alternate)) {
6814 sctp_free_remote_addr(stcb->asoc.alternate);
6815 stcb->asoc.alternate = NULL;
6817 net = TAILQ_FIRST(&stcb->asoc.nets);
6818 if (net != stcb->asoc.primary_destination) {
6820 * first one on the list is NOT the primary
6821 * sctp_cmpaddr() is much more efficient if the
6822 * primary is the first on the list, make it so.
6824 TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6825 TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6832 sctp_is_vtag_good(struct sctp_inpcb *inp, uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now, int save_in_twait)
6835 * This function serves two purposes. It will see if a TAG can be
6836 * re-used and return 1 for yes it is ok and 0 for don't use that
6837 * tag. A secondary function it will do is purge out old tags that
6840 struct sctpvtaghead *chain;
6841 struct sctp_tagblock *twait_block;
6842 struct sctpasochead *head;
6843 struct sctp_tcb *stcb;
6846 SCTP_INP_INFO_RLOCK();
6847 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag,
6848 SCTP_BASE_INFO(hashasocmark))];
6851 goto skip_vtag_check;
6853 LIST_FOREACH(stcb, head, sctp_asocs) {
6855 * We choose not to lock anything here. TCB's can't be
6856 * removed since we have the read lock, so they can't be
6857 * freed on us, same thing for the INP. I may be wrong with
6858 * this assumption, but we will go with it for now :-)
6860 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
6863 if (stcb->asoc.my_vtag == tag) {
6865 if (stcb->rport != rport) {
6868 if (stcb->sctp_ep->sctp_lport != lport) {
6871 /* Its a used tag set */
6872 SCTP_INP_INFO_RUNLOCK();
6878 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
6879 /* Now what about timed wait ? */
6880 if (!LIST_EMPTY(chain)) {
6882 * Block(s) are present, lets see if we have this tag in the
6885 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6886 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
6887 if (twait_block->vtag_block[i].v_tag == 0) {
6890 } else if ((long)twait_block->vtag_block[i].tv_sec_at_expire <
6892 /* Audit expires this guy */
6893 twait_block->vtag_block[i].tv_sec_at_expire = 0;
6894 twait_block->vtag_block[i].v_tag = 0;
6895 twait_block->vtag_block[i].lport = 0;
6896 twait_block->vtag_block[i].rport = 0;
6897 } else if ((twait_block->vtag_block[i].v_tag == tag) &&
6898 (twait_block->vtag_block[i].lport == lport) &&
6899 (twait_block->vtag_block[i].rport == rport)) {
6900 /* Bad tag, sorry :< */
6901 SCTP_INP_INFO_RUNLOCK();
6907 SCTP_INP_INFO_RUNLOCK();
6912 static sctp_assoc_t reneged_asoc_ids[256];
6913 static uint8_t reneged_at = 0;
6917 sctp_drain_mbufs(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
6920 * We must hunt this association for MBUF's past the cumack (i.e.
6921 * out of order data that we can renege on).
6923 struct sctp_association *asoc;
6924 struct sctp_tmit_chunk *chk, *nchk;
6925 uint32_t cumulative_tsn_p1;
6926 struct sctp_queued_to_read *ctl, *nctl;
6931 /* We look for anything larger than the cum-ack + 1 */
6934 if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) {
6935 /* none we can reneg on. */
6938 SCTP_STAT_INCR(sctps_protocol_drains_done);
6939 cumulative_tsn_p1 = asoc->cumulative_tsn + 1;
6941 /* First look in the re-assembly queue */
6942 TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) {
6943 if (SCTP_TSN_GT(chk->rec.data.TSN_seq, cumulative_tsn_p1)) {
6944 /* Yep it is above cum-ack */
6946 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.TSN_seq, asoc->mapping_array_base_tsn);
6947 asoc->size_on_reasm_queue = sctp_sbspace_sub(asoc->size_on_reasm_queue, chk->send_size);
6948 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6949 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6950 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
6952 sctp_m_freem(chk->data);
6955 sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
6958 /* Ok that was fun, now we will drain all the inbound streams? */
6959 for (strmat = 0; strmat < asoc->streamincnt; strmat++) {
6960 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[strmat].inqueue, next, nctl) {
6961 if (SCTP_TSN_GT(ctl->sinfo_tsn, cumulative_tsn_p1)) {
6962 /* Yep it is above cum-ack */
6964 SCTP_CALC_TSN_TO_GAP(gap, ctl->sinfo_tsn, asoc->mapping_array_base_tsn);
6965 asoc->size_on_all_streams = sctp_sbspace_sub(asoc->size_on_all_streams, ctl->length);
6966 sctp_ucount_decr(asoc->cnt_on_all_streams);
6967 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6968 TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, ctl, next);
6970 sctp_m_freem(ctl->data);
6973 sctp_free_remote_addr(ctl->whoFrom);
6974 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
6975 SCTP_DECR_READQ_COUNT();
6980 /* We must back down to see what the new highest is */
6981 for (i = asoc->highest_tsn_inside_map; SCTP_TSN_GE(i, asoc->mapping_array_base_tsn); i--) {
6982 SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn);
6983 if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) {
6984 asoc->highest_tsn_inside_map = i;
6990 asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1;
6993 * Question, should we go through the delivery queue? The
6994 * only reason things are on here is the app not reading OR
6995 * a p-d-api up. An attacker COULD send enough in to
6996 * initiate the PD-API and then send a bunch of stuff to
6997 * other streams... these would wind up on the delivery
6998 * queue.. and then we would not get to them. But in order
6999 * to do this I then have to back-track and un-deliver
7000 * sequence numbers in streams.. el-yucko. I think for now
7001 * we will NOT look at the delivery queue and leave it to be
7002 * something to consider later. An alternative would be to
7003 * abort the P-D-API with a notification and then deliver
7004 * the data.... Or another method might be to keep track of
7005 * how many times the situation occurs and if we see a
7006 * possible attack underway just abort the association.
7009 SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt);
7012 * Now do we need to find a new
7013 * asoc->highest_tsn_inside_map?
7015 asoc->last_revoke_count = cnt;
7016 (void)SCTP_OS_TIMER_STOP(&stcb->asoc.dack_timer.timer);
7017 /* sa_ignore NO_NULL_CHK */
7018 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
7019 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED);
7020 reneged_asoc_ids[reneged_at] = sctp_get_associd(stcb);
7024 * Another issue, in un-setting the TSN's in the mapping array we
7025 * DID NOT adjust the highest_tsn marker. This will cause one of
7026 * two things to occur. It may cause us to do extra work in checking
7027 * for our mapping array movement. More importantly it may cause us
7028 * to SACK every datagram. This may not be a bad thing though since
7029 * we will recover once we get our cum-ack above and all this stuff
7030 * we dumped recovered.
7038 * We must walk the PCB lists for ALL associations here. The system
7039 * is LOW on MBUF's and needs help. This is where reneging will
7040 * occur. We really hope this does NOT happen!
7042 VNET_ITERATOR_DECL(vnet_iter);
7043 VNET_LIST_RLOCK_NOSLEEP();
7044 VNET_FOREACH(vnet_iter) {
7045 CURVNET_SET(vnet_iter);
7046 struct sctp_inpcb *inp;
7047 struct sctp_tcb *stcb;
7049 SCTP_STAT_INCR(sctps_protocol_drain_calls);
7050 if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
7057 SCTP_INP_INFO_RLOCK();
7058 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
7059 /* For each endpoint */
7060 SCTP_INP_RLOCK(inp);
7061 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
7062 /* For each association */
7063 SCTP_TCB_LOCK(stcb);
7064 sctp_drain_mbufs(inp, stcb);
7065 SCTP_TCB_UNLOCK(stcb);
7067 SCTP_INP_RUNLOCK(inp);
7069 SCTP_INP_INFO_RUNLOCK();
7072 VNET_LIST_RUNLOCK_NOSLEEP();
7076 * start a new iterator
7077 * iterates through all endpoints and associations based on the pcb_state
7078 * flags and asoc_state. "af" (mandatory) is executed for all matching
7079 * assocs and "ef" (optional) is executed when the iterator completes.
7080 * "inpf" (optional) is executed for each new endpoint as it is being
7081 * iterated through. inpe (optional) is called when the inp completes
7082 * its way through all the stcbs.
7085 sctp_initiate_iterator(inp_func inpf,
7089 uint32_t pcb_features,
7090 uint32_t asoc_state,
7094 struct sctp_inpcb *s_inp,
7095 uint8_t chunk_output_off)
7097 struct sctp_iterator *it = NULL;
7102 SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator),
7105 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
7108 memset(it, 0, sizeof(*it));
7109 it->function_assoc = af;
7110 it->function_inp = inpf;
7112 it->done_current_ep = 0;
7114 it->done_current_ep = 1;
7115 it->function_atend = ef;
7118 it->pcb_flags = pcb_state;
7119 it->pcb_features = pcb_features;
7120 it->asoc_state = asoc_state;
7121 it->function_inp_end = inpe;
7122 it->no_chunk_output = chunk_output_off;
7125 /* Assume lock is held here */
7127 SCTP_INP_INCR_REF(it->inp);
7128 it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP;
7130 SCTP_INP_INFO_RLOCK();
7131 it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead));
7133 SCTP_INP_INCR_REF(it->inp);
7135 SCTP_INP_INFO_RUNLOCK();
7136 it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP;
7139 SCTP_IPI_ITERATOR_WQ_LOCK();
7141 TAILQ_INSERT_TAIL(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
7142 if (sctp_it_ctl.iterator_running == 0) {
7143 sctp_wakeup_iterator();
7145 SCTP_IPI_ITERATOR_WQ_UNLOCK();
7146 /* sa_ignore MEMLEAK {memory is put on the tailq for the iterator} */