2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
5 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
6 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
11 * a) Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
14 * b) Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the distribution.
18 * c) Neither the name of Cisco Systems, Inc. nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
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 #if defined(INET) || defined(INET6)
52 #include <netinet/udp.h>
55 #include <netinet6/ip6_var.h>
57 #include <sys/sched.h>
59 #include <sys/unistd.h>
62 VNET_DEFINE(struct sctp_base_info, system_base_info);
64 /* FIX: we don't handle multiple link local scopes */
65 /* "scopeless" replacement IN6_ARE_ADDR_EQUAL */
68 SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b)
70 struct sockaddr_in6 tmp_a, tmp_b;
72 memcpy(&tmp_a, a, sizeof(struct sockaddr_in6));
73 if (sa6_embedscope(&tmp_a, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
76 memcpy(&tmp_b, b, sizeof(struct sockaddr_in6));
77 if (sa6_embedscope(&tmp_b, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
80 return (IN6_ARE_ADDR_EQUAL(&tmp_a.sin6_addr, &tmp_b.sin6_addr));
85 sctp_fill_pcbinfo(struct sctp_pcbinfo *spcb)
88 * We really don't need to lock this, but I will just because it
91 SCTP_INP_INFO_RLOCK();
92 spcb->ep_count = SCTP_BASE_INFO(ipi_count_ep);
93 spcb->asoc_count = SCTP_BASE_INFO(ipi_count_asoc);
94 spcb->laddr_count = SCTP_BASE_INFO(ipi_count_laddr);
95 spcb->raddr_count = SCTP_BASE_INFO(ipi_count_raddr);
96 spcb->chk_count = SCTP_BASE_INFO(ipi_count_chunk);
97 spcb->readq_count = SCTP_BASE_INFO(ipi_count_readq);
98 spcb->stream_oque = SCTP_BASE_INFO(ipi_count_strmoq);
99 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);
189 /* Add it to the hash table */
190 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
191 LIST_INSERT_HEAD(bucket, vrf, next_vrf);
192 atomic_add_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
198 sctp_find_ifn(void *ifn, uint32_t ifn_index)
200 struct sctp_ifn *sctp_ifnp;
201 struct sctp_ifnlist *hash_ifn_head;
204 * We assume the lock is held for the addresses if that's wrong
205 * problems could occur :-)
207 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
208 LIST_FOREACH(sctp_ifnp, hash_ifn_head, next_bucket) {
209 if (sctp_ifnp->ifn_index == ifn_index) {
212 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) {
237 sctp_free_vrf(struct sctp_vrf *vrf)
239 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&vrf->refcount)) {
240 if (vrf->vrf_addr_hash) {
241 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
242 vrf->vrf_addr_hash = NULL;
244 /* We zero'd the count */
245 LIST_REMOVE(vrf, next_vrf);
246 SCTP_FREE(vrf, SCTP_M_VRF);
247 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
253 sctp_free_ifn(struct sctp_ifn *sctp_ifnp)
255 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifnp->refcount)) {
256 /* We zero'd the count */
257 if (sctp_ifnp->vrf) {
258 sctp_free_vrf(sctp_ifnp->vrf);
260 SCTP_FREE(sctp_ifnp, SCTP_M_IFN);
261 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
267 sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu)
269 struct sctp_ifn *sctp_ifnp;
271 sctp_ifnp = sctp_find_ifn((void *)NULL, ifn_index);
272 if (sctp_ifnp != NULL) {
273 sctp_ifnp->ifn_mtu = mtu;
279 sctp_free_ifa(struct sctp_ifa *sctp_ifap)
281 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifap->refcount)) {
282 /* We zero'd the count */
283 if (sctp_ifap->ifn_p) {
284 sctp_free_ifn(sctp_ifap->ifn_p);
286 SCTP_FREE(sctp_ifap, SCTP_M_IFA);
287 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
293 sctp_delete_ifn(struct sctp_ifn *sctp_ifnp, int hold_addr_lock)
295 struct sctp_ifn *found;
297 found = sctp_find_ifn(sctp_ifnp->ifn_p, sctp_ifnp->ifn_index);
299 /* Not in the list.. sorry */
302 if (hold_addr_lock == 0)
303 SCTP_IPI_ADDR_WLOCK();
304 LIST_REMOVE(sctp_ifnp, next_bucket);
305 LIST_REMOVE(sctp_ifnp, next_ifn);
306 SCTP_DEREGISTER_INTERFACE(sctp_ifnp->ifn_index,
307 sctp_ifnp->registered_af);
308 if (hold_addr_lock == 0)
309 SCTP_IPI_ADDR_WUNLOCK();
310 /* Take away the reference, and possibly free it */
311 sctp_free_ifn(sctp_ifnp);
316 sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr,
317 const char *if_name, uint32_t ifn_index)
319 struct sctp_vrf *vrf;
320 struct sctp_ifa *sctp_ifap;
322 SCTP_IPI_ADDR_RLOCK();
323 vrf = sctp_find_vrf(vrf_id);
325 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
329 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
330 if (sctp_ifap == NULL) {
331 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
334 if (sctp_ifap->ifn_p == NULL) {
335 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unusable\n");
339 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) != 0) {
340 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
341 sctp_ifap->ifn_p->ifn_name, if_name);
345 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
346 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
347 sctp_ifap->ifn_p->ifn_index, ifn_index);
352 sctp_ifap->localifa_flags &= (~SCTP_ADDR_VALID);
353 sctp_ifap->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE;
355 SCTP_IPI_ADDR_RUNLOCK();
360 sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr,
361 const char *if_name, uint32_t ifn_index)
363 struct sctp_vrf *vrf;
364 struct sctp_ifa *sctp_ifap;
366 SCTP_IPI_ADDR_RLOCK();
367 vrf = sctp_find_vrf(vrf_id);
369 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
373 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
374 if (sctp_ifap == NULL) {
375 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
378 if (sctp_ifap->ifn_p == NULL) {
379 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unusable\n");
383 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) != 0) {
384 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
385 sctp_ifap->ifn_p->ifn_name, if_name);
389 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
390 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
391 sctp_ifap->ifn_p->ifn_index, ifn_index);
396 sctp_ifap->localifa_flags &= (~SCTP_ADDR_IFA_UNUSEABLE);
397 sctp_ifap->localifa_flags |= SCTP_ADDR_VALID;
399 SCTP_IPI_ADDR_RUNLOCK();
404 * Add an ifa to an ifn.
405 * Register the interface as necessary.
406 * NOTE: ADDR write lock MUST be held.
409 sctp_add_ifa_to_ifn(struct sctp_ifn *sctp_ifnp, struct sctp_ifa *sctp_ifap)
413 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
414 sctp_ifap->ifn_p = sctp_ifnp;
415 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
416 /* update address counts */
417 sctp_ifnp->ifa_count++;
418 ifa_af = sctp_ifap->address.sa.sa_family;
433 if (sctp_ifnp->ifa_count == 1) {
434 /* register the new interface */
435 SCTP_REGISTER_INTERFACE(sctp_ifnp->ifn_index, ifa_af);
436 sctp_ifnp->registered_af = ifa_af;
442 * Remove an ifa from its ifn.
443 * If no more addresses exist, remove the ifn too. Otherwise, re-register
444 * the interface based on the remaining address families left.
445 * NOTE: ADDR write lock MUST be held.
448 sctp_remove_ifa_from_ifn(struct sctp_ifa *sctp_ifap)
450 LIST_REMOVE(sctp_ifap, next_ifa);
451 if (sctp_ifap->ifn_p) {
452 /* update address counts */
453 sctp_ifap->ifn_p->ifa_count--;
454 switch (sctp_ifap->address.sa.sa_family) {
457 sctp_ifap->ifn_p->num_v4--;
462 sctp_ifap->ifn_p->num_v6--;
469 if (LIST_EMPTY(&sctp_ifap->ifn_p->ifalist)) {
470 /* remove the ifn, possibly freeing it */
471 sctp_delete_ifn(sctp_ifap->ifn_p, SCTP_ADDR_LOCKED);
473 /* re-register address family type, if needed */
474 if ((sctp_ifap->ifn_p->num_v6 == 0) &&
475 (sctp_ifap->ifn_p->registered_af == AF_INET6)) {
476 SCTP_DEREGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET6);
477 SCTP_REGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET);
478 sctp_ifap->ifn_p->registered_af = AF_INET;
479 } else if ((sctp_ifap->ifn_p->num_v4 == 0) &&
480 (sctp_ifap->ifn_p->registered_af == AF_INET)) {
481 SCTP_DEREGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET);
482 SCTP_REGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET6);
483 sctp_ifap->ifn_p->registered_af = AF_INET6;
485 /* free the ifn refcount */
486 sctp_free_ifn(sctp_ifap->ifn_p);
488 sctp_ifap->ifn_p = NULL;
494 sctp_add_addr_to_vrf(uint32_t vrf_id, void *ifn, uint32_t ifn_index,
495 uint32_t ifn_type, const char *if_name, void *ifa,
496 struct sockaddr *addr, uint32_t ifa_flags,
499 struct sctp_vrf *vrf;
500 struct sctp_ifn *sctp_ifnp = NULL;
501 struct sctp_ifa *sctp_ifap = NULL;
502 struct sctp_ifalist *hash_addr_head;
503 struct sctp_ifnlist *hash_ifn_head;
504 uint32_t hash_of_addr;
508 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: adding address: ", vrf_id);
509 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
511 SCTP_IPI_ADDR_WLOCK();
512 sctp_ifnp = sctp_find_ifn(ifn, ifn_index);
514 vrf = sctp_ifnp->vrf;
516 vrf = sctp_find_vrf(vrf_id);
518 vrf = sctp_allocate_vrf(vrf_id);
520 SCTP_IPI_ADDR_WUNLOCK();
525 if (sctp_ifnp == NULL) {
527 * build one and add it, can't hold lock until after malloc
530 SCTP_IPI_ADDR_WUNLOCK();
531 SCTP_MALLOC(sctp_ifnp, struct sctp_ifn *,
532 sizeof(struct sctp_ifn), SCTP_M_IFN);
533 if (sctp_ifnp == NULL) {
535 panic("No memory for IFN");
539 memset(sctp_ifnp, 0, sizeof(struct sctp_ifn));
540 sctp_ifnp->ifn_index = ifn_index;
541 sctp_ifnp->ifn_p = ifn;
542 sctp_ifnp->ifn_type = ifn_type;
543 sctp_ifnp->refcount = 0;
544 sctp_ifnp->vrf = vrf;
545 atomic_add_int(&vrf->refcount, 1);
546 sctp_ifnp->ifn_mtu = SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, addr->sa_family);
547 if (if_name != NULL) {
548 snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", if_name);
550 snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", "unknown");
552 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
553 LIST_INIT(&sctp_ifnp->ifalist);
554 SCTP_IPI_ADDR_WLOCK();
555 LIST_INSERT_HEAD(hash_ifn_head, sctp_ifnp, next_bucket);
556 LIST_INSERT_HEAD(&vrf->ifnlist, sctp_ifnp, next_ifn);
557 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
560 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
562 /* Hmm, it already exists? */
563 if ((sctp_ifap->ifn_p) &&
564 (sctp_ifap->ifn_p->ifn_index == ifn_index)) {
565 SCTPDBG(SCTP_DEBUG_PCB4, "Using existing ifn %s (0x%x) for ifa %p\n",
566 sctp_ifap->ifn_p->ifn_name, ifn_index,
569 /* Remove the created one that we don't want */
570 sctp_delete_ifn(sctp_ifnp, SCTP_ADDR_LOCKED);
572 if (sctp_ifap->localifa_flags & SCTP_BEING_DELETED) {
573 /* easy to solve, just switch back to active */
574 SCTPDBG(SCTP_DEBUG_PCB4, "Clearing deleted ifa flag\n");
575 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
576 sctp_ifap->ifn_p = sctp_ifnp;
577 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
580 SCTP_IPI_ADDR_WUNLOCK();
583 if (sctp_ifap->ifn_p) {
585 * The last IFN gets the address, remove the
588 SCTPDBG(SCTP_DEBUG_PCB4, "Moving ifa %p from %s (0x%x) to %s (0x%x)\n",
589 (void *)sctp_ifap, sctp_ifap->ifn_p->ifn_name,
590 sctp_ifap->ifn_p->ifn_index, if_name,
592 /* remove the address from the old ifn */
593 sctp_remove_ifa_from_ifn(sctp_ifap);
594 /* move the address over to the new ifn */
595 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
596 goto exit_stage_left;
598 /* repair ifnp which was NULL ? */
599 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
600 SCTPDBG(SCTP_DEBUG_PCB4, "Repairing ifn %p for ifa %p\n",
601 (void *)sctp_ifnp, (void *)sctp_ifap);
602 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
604 goto exit_stage_left;
607 SCTP_IPI_ADDR_WUNLOCK();
608 SCTP_MALLOC(sctp_ifap, struct sctp_ifa *, sizeof(struct sctp_ifa), SCTP_M_IFA);
609 if (sctp_ifap == NULL) {
611 panic("No memory for IFA");
615 memset(sctp_ifap, 0, sizeof(struct sctp_ifa));
616 sctp_ifap->ifn_p = sctp_ifnp;
617 atomic_add_int(&sctp_ifnp->refcount, 1);
618 sctp_ifap->vrf_id = vrf_id;
619 sctp_ifap->ifa = ifa;
620 memcpy(&sctp_ifap->address, addr, addr->sa_len);
621 sctp_ifap->localifa_flags = SCTP_ADDR_VALID | SCTP_ADDR_DEFER_USE;
622 sctp_ifap->flags = ifa_flags;
624 switch (sctp_ifap->address.sa.sa_family) {
628 struct sockaddr_in *sin;
630 sin = &sctp_ifap->address.sin;
631 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
632 (IN4_ISLOOPBACK_ADDRESS(&sin->sin_addr))) {
633 sctp_ifap->src_is_loop = 1;
635 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
636 sctp_ifap->src_is_priv = 1;
640 new_ifn_af = AF_INET;
647 /* ok to use deprecated addresses? */
648 struct sockaddr_in6 *sin6;
650 sin6 = &sctp_ifap->address.sin6;
651 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
652 (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))) {
653 sctp_ifap->src_is_loop = 1;
655 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
656 sctp_ifap->src_is_priv = 1;
660 new_ifn_af = AF_INET6;
668 hash_of_addr = sctp_get_ifa_hash_val(&sctp_ifap->address.sa);
670 if ((sctp_ifap->src_is_priv == 0) &&
671 (sctp_ifap->src_is_loop == 0)) {
672 sctp_ifap->src_is_glob = 1;
674 SCTP_IPI_ADDR_WLOCK();
675 hash_addr_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
676 LIST_INSERT_HEAD(hash_addr_head, sctp_ifap, next_bucket);
677 sctp_ifap->refcount = 1;
678 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
679 sctp_ifnp->ifa_count++;
680 vrf->total_ifa_count++;
681 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
683 SCTP_REGISTER_INTERFACE(ifn_index, new_ifn_af);
684 sctp_ifnp->registered_af = new_ifn_af;
686 SCTP_IPI_ADDR_WUNLOCK();
689 * Bump up the refcount so that when the timer completes it
690 * will drop back down.
692 struct sctp_laddr *wi;
694 atomic_add_int(&sctp_ifap->refcount, 1);
695 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
698 * Gak, what can we do? We have lost an address
699 * change can you say HOSED?
701 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
702 /* Opps, must decrement the count */
703 sctp_del_addr_from_vrf(vrf_id, addr, ifn_index,
707 SCTP_INCR_LADDR_COUNT();
708 memset(wi, 0, sizeof(*wi));
709 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
711 wi->action = SCTP_ADD_IP_ADDRESS;
714 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
715 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
716 (struct sctp_inpcb *)NULL,
717 (struct sctp_tcb *)NULL,
718 (struct sctp_nets *)NULL);
719 SCTP_WQ_ADDR_UNLOCK();
721 /* it's ready for use */
722 sctp_ifap->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
728 sctp_del_addr_from_vrf(uint32_t vrf_id, struct sockaddr *addr,
729 uint32_t ifn_index, const char *if_name)
731 struct sctp_vrf *vrf;
732 struct sctp_ifa *sctp_ifap = NULL;
734 SCTP_IPI_ADDR_WLOCK();
735 vrf = sctp_find_vrf(vrf_id);
737 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
742 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: deleting address:", vrf_id);
743 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
745 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
747 /* Validate the delete */
748 if (sctp_ifap->ifn_p) {
752 * The name has priority over the ifn_index
753 * if its given. We do this especially for
754 * panda who might recycle indexes fast.
757 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) == 0) {
758 /* They match its a correct delete */
763 /* last ditch check ifn_index */
764 if (ifn_index == sctp_ifap->ifn_p->ifn_index) {
769 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s does not match addresses\n",
770 ifn_index, ((if_name == NULL) ? "NULL" : if_name));
771 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s - ignoring delete\n",
772 sctp_ifap->ifn_p->ifn_index, sctp_ifap->ifn_p->ifn_name);
773 SCTP_IPI_ADDR_WUNLOCK();
777 SCTPDBG(SCTP_DEBUG_PCB4, "Deleting ifa %p\n", (void *)sctp_ifap);
778 sctp_ifap->localifa_flags &= SCTP_ADDR_VALID;
780 * We don't set the flag. This means that the structure will
781 * hang around in EP's that have bound specific to it until
782 * they close. This gives us TCP like behavior if someone
783 * removes an address (or for that matter adds it right
786 /* sctp_ifap->localifa_flags |= SCTP_BEING_DELETED; */
787 vrf->total_ifa_count--;
788 LIST_REMOVE(sctp_ifap, next_bucket);
789 sctp_remove_ifa_from_ifn(sctp_ifap);
793 SCTPDBG(SCTP_DEBUG_PCB4, "Del Addr-ifn:%d Could not find address:",
795 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
800 SCTP_IPI_ADDR_WUNLOCK();
802 struct sctp_laddr *wi;
804 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
807 * Gak, what can we do? We have lost an address
808 * change can you say HOSED?
810 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
812 /* Oops, must decrement the count */
813 sctp_free_ifa(sctp_ifap);
816 SCTP_INCR_LADDR_COUNT();
817 memset(wi, 0, sizeof(*wi));
818 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
820 wi->action = SCTP_DEL_IP_ADDRESS;
823 * Should this really be a tailq? As it is we will process
824 * the newest first :-0
826 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
827 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
828 (struct sctp_inpcb *)NULL,
829 (struct sctp_tcb *)NULL,
830 (struct sctp_nets *)NULL);
831 SCTP_WQ_ADDR_UNLOCK();
838 sctp_does_stcb_own_this_addr(struct sctp_tcb *stcb, struct sockaddr *to)
842 int ipv4_local_scope, ipv4_addr_legal;
845 int local_scope, site_scope, ipv6_addr_legal;
847 struct sctp_vrf *vrf;
848 struct sctp_ifn *sctp_ifn;
849 struct sctp_ifa *sctp_ifa;
851 loopback_scope = stcb->asoc.scope.loopback_scope;
853 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
854 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
857 local_scope = stcb->asoc.scope.local_scope;
858 site_scope = stcb->asoc.scope.site_scope;
859 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
862 SCTP_IPI_ADDR_RLOCK();
863 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
865 /* no vrf, no addresses */
866 SCTP_IPI_ADDR_RUNLOCK();
870 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
871 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
872 if ((loopback_scope == 0) &&
873 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
876 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
877 if (sctp_is_addr_restricted(stcb, sctp_ifa) &&
878 (!sctp_is_addr_pending(stcb, sctp_ifa))) {
880 * We allow pending addresses, where
881 * we have sent an asconf-add to be
886 if (sctp_ifa->address.sa.sa_family != to->sa_family) {
889 switch (sctp_ifa->address.sa.sa_family) {
892 if (ipv4_addr_legal) {
893 struct sockaddr_in *sin,
896 sin = &sctp_ifa->address.sin;
897 rsin = (struct sockaddr_in *)to;
898 if ((ipv4_local_scope == 0) &&
899 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
902 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
903 &sin->sin_addr) != 0) {
906 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
907 SCTP_IPI_ADDR_RUNLOCK();
915 if (ipv6_addr_legal) {
916 struct sockaddr_in6 *sin6,
919 sin6 = &sctp_ifa->address.sin6;
920 rsin6 = (struct sockaddr_in6 *)to;
921 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
922 &sin6->sin6_addr) != 0) {
925 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
926 if (local_scope == 0)
928 if (sin6->sin6_scope_id == 0) {
929 if (sa6_recoverscope(sin6) != 0)
933 if ((site_scope == 0) &&
934 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
937 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
938 SCTP_IPI_ADDR_RUNLOCK();
951 struct sctp_laddr *laddr;
953 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
954 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
955 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
958 if (sctp_is_addr_restricted(stcb, laddr->ifa) &&
959 (!sctp_is_addr_pending(stcb, laddr->ifa))) {
961 * We allow pending addresses, where we have
962 * sent an asconf-add to be considered
967 if (laddr->ifa->address.sa.sa_family != to->sa_family) {
970 switch (to->sa_family) {
974 struct sockaddr_in *sin, *rsin;
976 sin = &laddr->ifa->address.sin;
977 rsin = (struct sockaddr_in *)to;
978 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
979 SCTP_IPI_ADDR_RUNLOCK();
988 struct sockaddr_in6 *sin6, *rsin6;
990 sin6 = &laddr->ifa->address.sin6;
991 rsin6 = (struct sockaddr_in6 *)to;
992 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
993 SCTP_IPI_ADDR_RUNLOCK();
1007 SCTP_IPI_ADDR_RUNLOCK();
1012 static struct sctp_tcb *
1013 sctp_tcb_special_locate(struct sctp_inpcb **inp_p, struct sockaddr *from,
1014 struct sockaddr *to, struct sctp_nets **netp, uint32_t vrf_id)
1016 /**** ASSUMES THE CALLER holds the INP_INFO_RLOCK */
1018 * If we support the TCP model, then we must now dig through to see
1019 * if we can find our endpoint in the list of tcp ep's.
1021 uint16_t lport, rport;
1022 struct sctppcbhead *ephead;
1023 struct sctp_inpcb *inp;
1024 struct sctp_laddr *laddr;
1025 struct sctp_tcb *stcb;
1026 struct sctp_nets *net;
1028 if ((to == NULL) || (from == NULL)) {
1032 switch (to->sa_family) {
1035 if (from->sa_family == AF_INET) {
1036 lport = ((struct sockaddr_in *)to)->sin_port;
1037 rport = ((struct sockaddr_in *)from)->sin_port;
1045 if (from->sa_family == AF_INET6) {
1046 lport = ((struct sockaddr_in6 *)to)->sin6_port;
1047 rport = ((struct sockaddr_in6 *)from)->sin6_port;
1056 ephead = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
1058 * Ok now for each of the guys in this bucket we must look and see:
1059 * - Does the remote port match. - Does there single association's
1060 * addresses match this address (to). If so we update p_ep to point
1061 * to this ep and return the tcb from it.
1063 LIST_FOREACH(inp, ephead, sctp_hash) {
1064 SCTP_INP_RLOCK(inp);
1065 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1066 SCTP_INP_RUNLOCK(inp);
1069 if (lport != inp->sctp_lport) {
1070 SCTP_INP_RUNLOCK(inp);
1073 switch (to->sa_family) {
1077 struct sockaddr_in *sin;
1079 sin = (struct sockaddr_in *)to;
1080 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
1081 &sin->sin_addr) != 0) {
1082 SCTP_INP_RUNLOCK(inp);
1091 struct sockaddr_in6 *sin6;
1093 sin6 = (struct sockaddr_in6 *)to;
1094 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
1095 &sin6->sin6_addr) != 0) {
1096 SCTP_INP_RUNLOCK(inp);
1103 SCTP_INP_RUNLOCK(inp);
1106 if (inp->def_vrf_id != vrf_id) {
1107 SCTP_INP_RUNLOCK(inp);
1110 /* check to see if the ep has one of the addresses */
1111 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
1112 /* We are NOT bound all, so look further */
1115 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1117 if (laddr->ifa == NULL) {
1118 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n", __func__);
1121 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1122 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
1125 if (laddr->ifa->address.sa.sa_family ==
1127 /* see if it matches */
1129 if (from->sa_family == AF_INET) {
1130 struct sockaddr_in *intf_addr,
1133 intf_addr = &laddr->ifa->address.sin;
1134 sin = (struct sockaddr_in *)to;
1135 if (sin->sin_addr.s_addr ==
1136 intf_addr->sin_addr.s_addr) {
1143 if (from->sa_family == AF_INET6) {
1144 struct sockaddr_in6 *intf_addr6;
1145 struct sockaddr_in6 *sin6;
1147 sin6 = (struct sockaddr_in6 *)
1149 intf_addr6 = &laddr->ifa->address.sin6;
1151 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1161 /* This endpoint does not have this address */
1162 SCTP_INP_RUNLOCK(inp);
1167 * Ok if we hit here the ep has the address, does it hold
1170 /* XXX: Why don't we TAILQ_FOREACH through sctp_asoc_list? */
1171 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1173 SCTP_INP_RUNLOCK(inp);
1176 SCTP_TCB_LOCK(stcb);
1177 if (!sctp_does_stcb_own_this_addr(stcb, to)) {
1178 SCTP_TCB_UNLOCK(stcb);
1179 SCTP_INP_RUNLOCK(inp);
1182 if (stcb->rport != rport) {
1183 /* remote port does not match. */
1184 SCTP_TCB_UNLOCK(stcb);
1185 SCTP_INP_RUNLOCK(inp);
1188 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1189 SCTP_TCB_UNLOCK(stcb);
1190 SCTP_INP_RUNLOCK(inp);
1193 if (!sctp_does_stcb_own_this_addr(stcb, to)) {
1194 SCTP_TCB_UNLOCK(stcb);
1195 SCTP_INP_RUNLOCK(inp);
1198 /* Does this TCB have a matching address? */
1199 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1201 if (net->ro._l_addr.sa.sa_family != from->sa_family) {
1202 /* not the same family, can't be a match */
1205 switch (from->sa_family) {
1209 struct sockaddr_in *sin, *rsin;
1211 sin = (struct sockaddr_in *)&net->ro._l_addr;
1212 rsin = (struct sockaddr_in *)from;
1213 if (sin->sin_addr.s_addr ==
1214 rsin->sin_addr.s_addr) {
1220 * Update the endpoint
1224 SCTP_INP_RUNLOCK(inp);
1233 struct sockaddr_in6 *sin6, *rsin6;
1235 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1236 rsin6 = (struct sockaddr_in6 *)from;
1237 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1244 * Update the endpoint
1248 SCTP_INP_RUNLOCK(inp);
1259 SCTP_TCB_UNLOCK(stcb);
1260 SCTP_INP_RUNLOCK(inp);
1269 * 1) If I return a NULL you must decrement any INP ref cnt. 2) If I find an
1270 * stcb, both will be locked (locked_tcb and stcb) but decrement will be done
1271 * (if locked == NULL). 3) Decrement happens on return ONLY if locked ==
1276 sctp_findassociation_ep_addr(struct sctp_inpcb **inp_p, struct sockaddr *remote,
1277 struct sctp_nets **netp, struct sockaddr *local, struct sctp_tcb *locked_tcb)
1279 struct sctpasochead *head;
1280 struct sctp_inpcb *inp;
1281 struct sctp_tcb *stcb = NULL;
1282 struct sctp_nets *net;
1286 switch (remote->sa_family) {
1289 rport = (((struct sockaddr_in *)remote)->sin_port);
1294 rport = (((struct sockaddr_in6 *)remote)->sin6_port);
1302 * UN-lock so we can do proper locking here this occurs when
1303 * called from load_addresses_from_init.
1305 atomic_add_int(&locked_tcb->asoc.refcnt, 1);
1306 SCTP_TCB_UNLOCK(locked_tcb);
1308 SCTP_INP_INFO_RLOCK();
1309 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
1310 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
1312 * Now either this guy is our listener or it's the
1313 * connector. If it is the one that issued the connect, then
1314 * it's only chance is to be the first TCB in the list. If
1315 * it is the acceptor, then do the special_lookup to hash
1316 * and find the real inp.
1318 if ((inp->sctp_socket) && SCTP_IS_LISTENING(inp)) {
1319 /* to is peer addr, from is my addr */
1320 stcb = sctp_tcb_special_locate(inp_p, remote, local,
1321 netp, inp->def_vrf_id);
1322 if ((stcb != NULL) && (locked_tcb == NULL)) {
1323 /* we have a locked tcb, lower refcount */
1324 SCTP_INP_DECR_REF(inp);
1326 if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
1327 SCTP_INP_RLOCK(locked_tcb->sctp_ep);
1328 SCTP_TCB_LOCK(locked_tcb);
1329 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1330 SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
1332 SCTP_INP_INFO_RUNLOCK();
1335 SCTP_INP_WLOCK(inp);
1336 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1339 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1343 SCTP_TCB_LOCK(stcb);
1345 if (stcb->rport != rport) {
1346 /* remote port does not match. */
1347 SCTP_TCB_UNLOCK(stcb);
1350 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1351 SCTP_TCB_UNLOCK(stcb);
1354 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1355 SCTP_TCB_UNLOCK(stcb);
1358 /* now look at the list of remote addresses */
1359 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1361 if (net == (TAILQ_NEXT(net, sctp_next))) {
1362 panic("Corrupt net list");
1365 if (net->ro._l_addr.sa.sa_family !=
1366 remote->sa_family) {
1367 /* not the same family */
1370 switch (remote->sa_family) {
1374 struct sockaddr_in *sin,
1377 sin = (struct sockaddr_in *)
1379 rsin = (struct sockaddr_in *)remote;
1380 if (sin->sin_addr.s_addr ==
1381 rsin->sin_addr.s_addr) {
1386 if (locked_tcb == NULL) {
1387 SCTP_INP_DECR_REF(inp);
1388 } else if (locked_tcb != stcb) {
1389 SCTP_TCB_LOCK(locked_tcb);
1392 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1395 SCTP_INP_WUNLOCK(inp);
1396 SCTP_INP_INFO_RUNLOCK();
1405 struct sockaddr_in6 *sin6,
1408 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1409 rsin6 = (struct sockaddr_in6 *)remote;
1410 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1416 if (locked_tcb == NULL) {
1417 SCTP_INP_DECR_REF(inp);
1418 } else if (locked_tcb != stcb) {
1419 SCTP_TCB_LOCK(locked_tcb);
1422 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1424 SCTP_INP_WUNLOCK(inp);
1425 SCTP_INP_INFO_RUNLOCK();
1436 SCTP_TCB_UNLOCK(stcb);
1439 SCTP_INP_WLOCK(inp);
1440 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1443 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport,
1444 inp->sctp_hashmark)];
1445 LIST_FOREACH(stcb, head, sctp_tcbhash) {
1446 if (stcb->rport != rport) {
1447 /* remote port does not match */
1450 SCTP_TCB_LOCK(stcb);
1451 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1452 SCTP_TCB_UNLOCK(stcb);
1455 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1456 SCTP_TCB_UNLOCK(stcb);
1459 /* now look at the list of remote addresses */
1460 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1462 if (net == (TAILQ_NEXT(net, sctp_next))) {
1463 panic("Corrupt net list");
1466 if (net->ro._l_addr.sa.sa_family !=
1467 remote->sa_family) {
1468 /* not the same family */
1471 switch (remote->sa_family) {
1475 struct sockaddr_in *sin,
1478 sin = (struct sockaddr_in *)
1480 rsin = (struct sockaddr_in *)remote;
1481 if (sin->sin_addr.s_addr ==
1482 rsin->sin_addr.s_addr) {
1487 if (locked_tcb == NULL) {
1488 SCTP_INP_DECR_REF(inp);
1489 } else if (locked_tcb != stcb) {
1490 SCTP_TCB_LOCK(locked_tcb);
1493 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1495 SCTP_INP_WUNLOCK(inp);
1496 SCTP_INP_INFO_RUNLOCK();
1505 struct sockaddr_in6 *sin6,
1508 sin6 = (struct sockaddr_in6 *)
1510 rsin6 = (struct sockaddr_in6 *)remote;
1511 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1517 if (locked_tcb == NULL) {
1518 SCTP_INP_DECR_REF(inp);
1519 } else if (locked_tcb != stcb) {
1520 SCTP_TCB_LOCK(locked_tcb);
1523 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1525 SCTP_INP_WUNLOCK(inp);
1526 SCTP_INP_INFO_RUNLOCK();
1537 SCTP_TCB_UNLOCK(stcb);
1541 /* clean up for returning null */
1543 SCTP_TCB_LOCK(locked_tcb);
1544 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1546 SCTP_INP_WUNLOCK(inp);
1547 SCTP_INP_INFO_RUNLOCK();
1554 * Find an association for a specific endpoint using the association id given
1555 * out in the COMM_UP notification
1558 sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1561 * Use my the assoc_id to find a endpoint
1563 struct sctpasochead *head;
1564 struct sctp_tcb *stcb;
1568 SCTP_PRINTF("TSNH ep_associd\n");
1571 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1572 SCTP_PRINTF("TSNH ep_associd0\n");
1575 id = (uint32_t)asoc_id;
1576 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
1578 /* invalid id TSNH */
1579 SCTP_PRINTF("TSNH ep_associd1\n");
1582 LIST_FOREACH(stcb, head, sctp_tcbasocidhash) {
1583 if (stcb->asoc.assoc_id == id) {
1584 if (inp != stcb->sctp_ep) {
1586 * some other guy has the same id active (id
1589 SCTP_PRINTF("TSNH ep_associd2\n");
1592 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1596 SCTP_TCB_LOCK(stcb);
1606 sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1608 struct sctp_tcb *stcb;
1610 SCTP_INP_RLOCK(inp);
1611 stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
1612 SCTP_INP_RUNLOCK(inp);
1618 * Endpoint probe expects that the INP_INFO is locked.
1620 static struct sctp_inpcb *
1621 sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head,
1622 uint16_t lport, uint32_t vrf_id)
1624 struct sctp_inpcb *inp;
1625 struct sctp_laddr *laddr;
1627 struct sockaddr_in *sin;
1630 struct sockaddr_in6 *sin6;
1631 struct sockaddr_in6 *intf_addr6;
1641 switch (nam->sa_family) {
1644 sin = (struct sockaddr_in *)nam;
1649 sin6 = (struct sockaddr_in6 *)nam;
1653 /* unsupported family */
1660 LIST_FOREACH(inp, head, sctp_hash) {
1661 SCTP_INP_RLOCK(inp);
1662 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1663 SCTP_INP_RUNLOCK(inp);
1666 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) &&
1667 (inp->sctp_lport == lport)) {
1669 switch (nam->sa_family) {
1672 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1673 SCTP_IPV6_V6ONLY(inp)) {
1675 * IPv4 on a IPv6 socket with ONLY
1678 SCTP_INP_RUNLOCK(inp);
1681 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
1682 &sin->sin_addr) != 0) {
1683 SCTP_INP_RUNLOCK(inp);
1691 * A V6 address and the endpoint is NOT
1694 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
1695 SCTP_INP_RUNLOCK(inp);
1698 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
1699 &sin6->sin6_addr) != 0) {
1700 SCTP_INP_RUNLOCK(inp);
1708 /* does a VRF id match? */
1710 if (inp->def_vrf_id == vrf_id)
1713 SCTP_INP_RUNLOCK(inp);
1718 SCTP_INP_RUNLOCK(inp);
1720 switch (nam->sa_family) {
1723 if (sin->sin_addr.s_addr == INADDR_ANY) {
1724 /* Can't hunt for one that has no address specified */
1731 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1732 /* Can't hunt for one that has no address specified */
1741 * ok, not bound to all so see if we can find a EP bound to this
1744 LIST_FOREACH(inp, head, sctp_hash) {
1745 SCTP_INP_RLOCK(inp);
1746 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1747 SCTP_INP_RUNLOCK(inp);
1750 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
1751 SCTP_INP_RUNLOCK(inp);
1755 * Ok this could be a likely candidate, look at all of its
1758 if (inp->sctp_lport != lport) {
1759 SCTP_INP_RUNLOCK(inp);
1762 /* does a VRF id match? */
1764 if (inp->def_vrf_id == vrf_id)
1768 SCTP_INP_RUNLOCK(inp);
1771 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1772 if (laddr->ifa == NULL) {
1773 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
1777 SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ",
1778 (void *)laddr->ifa);
1779 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1780 SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n");
1783 if (laddr->ifa->address.sa.sa_family == nam->sa_family) {
1784 /* possible, see if it matches */
1785 switch (nam->sa_family) {
1788 if (sin->sin_addr.s_addr ==
1789 laddr->ifa->address.sin.sin_addr.s_addr) {
1790 SCTP_INP_RUNLOCK(inp);
1797 intf_addr6 = &laddr->ifa->address.sin6;
1798 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1800 SCTP_INP_RUNLOCK(inp);
1808 SCTP_INP_RUNLOCK(inp);
1814 static struct sctp_inpcb *
1815 sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
1817 struct sctppcbhead *head;
1818 struct sctp_inpcb *t_inp;
1821 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1822 SCTP_BASE_INFO(hashmark))];
1823 LIST_FOREACH(t_inp, head, sctp_hash) {
1824 if (t_inp->sctp_lport != lport) {
1827 /* is it in the VRF in question */
1829 if (t_inp->def_vrf_id == vrf_id)
1834 /* This one is in use. */
1835 /* check the v6/v4 binding issue */
1836 if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1837 SCTP_IPV6_V6ONLY(t_inp)) {
1838 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1839 /* collision in V6 space */
1842 /* inp is BOUND_V4 no conflict */
1845 } else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1846 /* t_inp is bound v4 and v6, conflict always */
1849 /* t_inp is bound only V4 */
1850 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1851 SCTP_IPV6_V6ONLY(inp)) {
1855 /* else fall through to conflict */
1864 sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
1866 /* For 1-2-1 with port reuse */
1867 struct sctppcbhead *head;
1868 struct sctp_inpcb *tinp, *ninp;
1870 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
1871 /* only works with port reuse on */
1874 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) {
1877 SCTP_INP_RUNLOCK(inp);
1878 SCTP_INP_INFO_WLOCK();
1879 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport,
1880 SCTP_BASE_INFO(hashmark))];
1881 /* Kick out all non-listeners to the TCP hash */
1882 LIST_FOREACH_SAFE(tinp, head, sctp_hash, ninp) {
1883 if (tinp->sctp_lport != inp->sctp_lport) {
1886 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1889 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
1892 if (SCTP_IS_LISTENING(tinp)) {
1895 SCTP_INP_WLOCK(tinp);
1896 LIST_REMOVE(tinp, sctp_hash);
1897 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))];
1898 tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
1899 LIST_INSERT_HEAD(head, tinp, sctp_hash);
1900 SCTP_INP_WUNLOCK(tinp);
1902 SCTP_INP_WLOCK(inp);
1903 /* Pull from where he was */
1904 LIST_REMOVE(inp, sctp_hash);
1905 inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL;
1906 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))];
1907 LIST_INSERT_HEAD(head, inp, sctp_hash);
1908 SCTP_INP_WUNLOCK(inp);
1909 SCTP_INP_RLOCK(inp);
1910 SCTP_INP_INFO_WUNLOCK();
1916 sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock,
1920 * First we check the hash table to see if someone has this port
1921 * bound with just the port.
1923 struct sctp_inpcb *inp;
1924 struct sctppcbhead *head;
1928 struct sockaddr_in *sin;
1931 struct sockaddr_in6 *sin6;
1934 switch (nam->sa_family) {
1937 sin = (struct sockaddr_in *)nam;
1938 lport = sin->sin_port;
1943 sin6 = (struct sockaddr_in6 *)nam;
1944 lport = sin6->sin6_port;
1951 * I could cheat here and just cast to one of the types but we will
1952 * do it right. It also provides the check against an Unsupported
1955 /* Find the head of the ALLADDR chain */
1956 if (have_lock == 0) {
1957 SCTP_INP_INFO_RLOCK();
1959 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1960 SCTP_BASE_INFO(hashmark))];
1961 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1964 * If the TCP model exists it could be that the main listening
1965 * endpoint is gone but there still exists a connected socket for
1966 * this guy. If so we can return the first one that we find. This
1967 * may NOT be the correct one so the caller should be wary on the
1968 * returned INP. Currently the only caller that sets find_tcp_pool
1969 * is in bindx where we are verifying that a user CAN bind the
1970 * address. He either has bound it already, or someone else has, or
1971 * its open to bind, so this is good enough.
1973 if (inp == NULL && find_tcp_pool) {
1974 for (i = 0; i < SCTP_BASE_INFO(hashtcpmark) + 1; i++) {
1975 head = &SCTP_BASE_INFO(sctp_tcpephash)[i];
1976 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1983 SCTP_INP_INCR_REF(inp);
1985 if (have_lock == 0) {
1986 SCTP_INP_INFO_RUNLOCK();
1993 * Find an association for an endpoint with the pointer to whom you want to
1994 * send to and the endpoint pointer. The address can be IPv4 or IPv6. We may
1995 * need to change the *to to some other struct like a mbuf...
1998 sctp_findassociation_addr_sa(struct sockaddr *from, struct sockaddr *to,
1999 struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool,
2002 struct sctp_inpcb *inp = NULL;
2003 struct sctp_tcb *stcb;
2005 SCTP_INP_INFO_RLOCK();
2006 if (find_tcp_pool) {
2007 if (inp_p != NULL) {
2008 stcb = sctp_tcb_special_locate(inp_p, from, to, netp,
2011 stcb = sctp_tcb_special_locate(&inp, from, to, netp,
2015 SCTP_INP_INFO_RUNLOCK();
2019 inp = sctp_pcb_findep(to, 0, 1, vrf_id);
2020 if (inp_p != NULL) {
2023 SCTP_INP_INFO_RUNLOCK();
2028 * ok, we have an endpoint, now lets find the assoc for it (if any)
2029 * we now place the source address or from in the to of the find
2030 * endpoint call. Since in reality this chain is used from the
2031 * inbound packet side.
2033 if (inp_p != NULL) {
2034 stcb = sctp_findassociation_ep_addr(inp_p, from, netp, to,
2037 stcb = sctp_findassociation_ep_addr(&inp, from, netp, to,
2045 * This routine will grub through the mbuf that is a INIT or INIT-ACK and
2046 * find all addresses that the sender has specified in any address list. Each
2047 * address will be used to lookup the TCB and see if one exits.
2049 static struct sctp_tcb *
2050 sctp_findassociation_special_addr(struct mbuf *m, int offset,
2051 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp,
2052 struct sockaddr *dst)
2054 struct sctp_paramhdr *phdr, param_buf;
2055 #if defined(INET) || defined(INET6)
2056 struct sctp_tcb *stcb;
2061 struct sockaddr_in sin4;
2064 struct sockaddr_in6 sin6;
2068 memset(&sin4, 0, sizeof(sin4));
2069 sin4.sin_len = sizeof(sin4);
2070 sin4.sin_family = AF_INET;
2071 sin4.sin_port = sh->src_port;
2074 memset(&sin6, 0, sizeof(sin6));
2075 sin6.sin6_len = sizeof(sin6);
2076 sin6.sin6_family = AF_INET6;
2077 sin6.sin6_port = sh->src_port;
2080 offset += sizeof(struct sctp_init_chunk);
2082 phdr = sctp_get_next_param(m, offset, ¶m_buf, sizeof(param_buf));
2083 while (phdr != NULL) {
2084 /* now we must see if we want the parameter */
2085 #if defined(INET) || defined(INET6)
2086 ptype = ntohs(phdr->param_type);
2088 plen = ntohs(phdr->param_length);
2093 if (ptype == SCTP_IPV4_ADDRESS &&
2094 plen == sizeof(struct sctp_ipv4addr_param)) {
2095 /* Get the rest of the address */
2096 struct sctp_ipv4addr_param ip4_param, *p4;
2098 phdr = sctp_get_next_param(m, offset,
2099 (struct sctp_paramhdr *)&ip4_param, sizeof(ip4_param));
2103 p4 = (struct sctp_ipv4addr_param *)phdr;
2104 memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr));
2106 stcb = sctp_findassociation_ep_addr(inp_p,
2107 (struct sockaddr *)&sin4, netp, dst, NULL);
2114 if (ptype == SCTP_IPV6_ADDRESS &&
2115 plen == sizeof(struct sctp_ipv6addr_param)) {
2116 /* Get the rest of the address */
2117 struct sctp_ipv6addr_param ip6_param, *p6;
2119 phdr = sctp_get_next_param(m, offset,
2120 (struct sctp_paramhdr *)&ip6_param, sizeof(ip6_param));
2124 p6 = (struct sctp_ipv6addr_param *)phdr;
2125 memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr));
2127 stcb = sctp_findassociation_ep_addr(inp_p,
2128 (struct sockaddr *)&sin6, netp, dst, NULL);
2134 offset += SCTP_SIZE32(plen);
2135 phdr = sctp_get_next_param(m, offset, ¶m_buf,
2141 static struct sctp_tcb *
2142 sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag,
2143 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport,
2144 uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
2147 * Use my vtag to hash. If we find it we then verify the source addr
2148 * is in the assoc. If all goes well we save a bit on rec of a
2151 struct sctpasochead *head;
2152 struct sctp_nets *net;
2153 struct sctp_tcb *stcb;
2155 SCTP_INP_INFO_RLOCK();
2156 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag,
2157 SCTP_BASE_INFO(hashasocmark))];
2158 LIST_FOREACH(stcb, head, sctp_asocs) {
2159 SCTP_INP_RLOCK(stcb->sctp_ep);
2160 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
2161 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2164 if (stcb->sctp_ep->def_vrf_id != vrf_id) {
2165 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2168 SCTP_TCB_LOCK(stcb);
2169 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2170 if (stcb->asoc.my_vtag == vtag) {
2172 if (stcb->rport != rport) {
2173 SCTP_TCB_UNLOCK(stcb);
2176 if (stcb->sctp_ep->sctp_lport != lport) {
2177 SCTP_TCB_UNLOCK(stcb);
2180 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
2181 SCTP_TCB_UNLOCK(stcb);
2184 /* RRS:Need toaddr check here */
2185 if (sctp_does_stcb_own_this_addr(stcb, to) == 0) {
2186 /* Endpoint does not own this address */
2187 SCTP_TCB_UNLOCK(stcb);
2192 * If we have both vtags that's all we match
2195 if (stcb->asoc.peer_vtag == remote_tag) {
2197 * If both tags match we consider it
2198 * conclusive and check NO
2199 * source/destination addresses
2204 if (skip_src_check) {
2207 *netp = sctp_findnet(stcb, from);
2209 *netp = NULL; /* unknown */
2212 *inp_p = stcb->sctp_ep;
2213 SCTP_INP_INFO_RUNLOCK();
2216 net = sctp_findnet(stcb, from);
2220 SCTP_STAT_INCR(sctps_vtagexpress);
2221 *inp_p = stcb->sctp_ep;
2222 SCTP_INP_INFO_RUNLOCK();
2226 * not him, this should only happen in rare
2227 * cases so I peg it.
2229 SCTP_STAT_INCR(sctps_vtagbogus);
2232 SCTP_TCB_UNLOCK(stcb);
2234 SCTP_INP_INFO_RUNLOCK();
2240 * Find an association with the pointer to the inbound IP packet. This can be
2241 * a IPv4 or IPv6 packet.
2244 sctp_findassociation_addr(struct mbuf *m, int offset,
2245 struct sockaddr *src, struct sockaddr *dst,
2246 struct sctphdr *sh, struct sctp_chunkhdr *ch,
2247 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2249 struct sctp_tcb *stcb;
2250 struct sctp_inpcb *inp;
2253 /* we only go down this path if vtag is non-zero */
2254 stcb = sctp_findassoc_by_vtag(src, dst, ntohl(sh->v_tag),
2255 inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0);
2262 stcb = sctp_findassociation_addr_sa(src, dst, inp_p, netp,
2266 stcb = sctp_findassociation_addr_sa(src, dst, &inp, netp,
2269 SCTPDBG(SCTP_DEBUG_PCB1, "stcb:%p inp:%p\n", (void *)stcb, (void *)inp);
2270 if (stcb == NULL && inp) {
2271 /* Found a EP but not this address */
2272 if ((ch->chunk_type == SCTP_INITIATION) ||
2273 (ch->chunk_type == SCTP_INITIATION_ACK)) {
2275 * special hook, we do NOT return linp or an
2276 * association that is linked to an existing
2277 * association that is under the TCP pool (i.e. no
2278 * listener exists). The endpoint finding routine
2279 * will always find a listener before examining the
2282 if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
2288 stcb = sctp_findassociation_special_addr(m,
2289 offset, sh, &inp, netp, dst);
2290 if (inp_p != NULL) {
2295 SCTPDBG(SCTP_DEBUG_PCB1, "stcb is %p\n", (void *)stcb);
2300 * lookup an association by an ASCONF lookup address.
2301 * if the lookup address is 0.0.0.0 or ::0, use the vtag to do the lookup
2304 sctp_findassociation_ep_asconf(struct mbuf *m, int offset,
2305 struct sockaddr *dst, struct sctphdr *sh,
2306 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2308 struct sctp_tcb *stcb;
2309 union sctp_sockstore remote_store;
2310 struct sctp_paramhdr param_buf, *phdr;
2312 int zero_address = 0;
2314 struct sockaddr_in *sin;
2317 struct sockaddr_in6 *sin6;
2320 memset(&remote_store, 0, sizeof(remote_store));
2321 phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk),
2322 ¶m_buf, sizeof(struct sctp_paramhdr));
2324 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n",
2328 ptype = (int)((uint32_t)ntohs(phdr->param_type));
2329 /* get the correlation address */
2332 case SCTP_IPV6_ADDRESS:
2334 /* ipv6 address param */
2335 struct sctp_ipv6addr_param *p6, p6_buf;
2337 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) {
2340 p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m,
2341 offset + sizeof(struct sctp_asconf_chunk),
2342 &p6_buf.ph, sizeof(p6_buf));
2344 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n",
2348 sin6 = &remote_store.sin6;
2349 sin6->sin6_family = AF_INET6;
2350 sin6->sin6_len = sizeof(*sin6);
2351 sin6->sin6_port = sh->src_port;
2352 memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr));
2353 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
2359 case SCTP_IPV4_ADDRESS:
2361 /* ipv4 address param */
2362 struct sctp_ipv4addr_param *p4, p4_buf;
2364 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) {
2367 p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m,
2368 offset + sizeof(struct sctp_asconf_chunk),
2369 &p4_buf.ph, sizeof(p4_buf));
2371 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n",
2375 sin = &remote_store.sin;
2376 sin->sin_family = AF_INET;
2377 sin->sin_len = sizeof(*sin);
2378 sin->sin_port = sh->src_port;
2379 memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr));
2380 if (sin->sin_addr.s_addr == INADDR_ANY)
2386 /* invalid address param type */
2391 stcb = sctp_findassoc_by_vtag(NULL, dst, ntohl(sh->v_tag), inp_p,
2392 netp, sh->src_port, sh->dest_port, 1, vrf_id, 0);
2394 SCTP_INP_DECR_REF(*inp_p);
2397 stcb = sctp_findassociation_ep_addr(inp_p,
2398 &remote_store.sa, netp,
2406 * allocate a sctp_inpcb and setup a temporary binding to a port/all
2407 * addresses. This way if we don't get a bind we by default pick a ephemeral
2408 * port with all addresses bound.
2411 sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
2414 * we get called when a new endpoint starts up. We need to allocate
2415 * the sctp_inpcb structure from the zone and init it. Mark it as
2416 * unbound and find a port that we can use as an ephemeral with
2417 * INADDR_ANY. If the user binds later no problem we can then add in
2418 * the specific addresses. And setup the default parameters for the
2422 struct sctp_inpcb *inp;
2424 struct timeval time;
2425 sctp_sharedkey_t *null_key;
2429 SCTP_INP_INFO_WLOCK();
2430 inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb);
2432 SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n");
2433 SCTP_INP_INFO_WUNLOCK();
2434 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2438 memset(inp, 0, sizeof(*inp));
2440 /* bump generations */
2441 /* setup socket pointers */
2442 inp->sctp_socket = so;
2443 inp->ip_inp.inp.inp_socket = so;
2444 inp->ip_inp.inp.inp_cred = crhold(so->so_cred);
2446 if (INP_SOCKAF(so) == AF_INET6) {
2447 if (MODULE_GLOBAL(ip6_auto_flowlabel)) {
2448 inp->ip_inp.inp.inp_flags |= IN6P_AUTOFLOWLABEL;
2450 if (MODULE_GLOBAL(ip6_v6only)) {
2451 inp->ip_inp.inp.inp_flags |= IN6P_IPV6_V6ONLY;
2455 inp->sctp_associd_counter = 1;
2456 inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT;
2457 inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
2459 inp->sctp_cmt_on_off = SCTP_BASE_SYSCTL(sctp_cmt_on_off);
2460 inp->ecn_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_ecn_enable);
2461 inp->prsctp_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_pr_enable);
2462 inp->auth_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_auth_enable);
2463 inp->asconf_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_asconf_enable);
2464 inp->reconfig_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_reconfig_enable);
2465 inp->nrsack_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_nrsack_enable);
2466 inp->pktdrop_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_pktdrop_enable);
2467 inp->idata_supported = 0;
2469 inp->fibnum = so->so_fibnum;
2470 /* init the small hash table we use to track asocid <-> tcb */
2471 inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark);
2472 if (inp->sctp_asocidhash == NULL) {
2473 crfree(inp->ip_inp.inp.inp_cred);
2474 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2475 SCTP_INP_INFO_WUNLOCK();
2478 SCTP_INCR_EP_COUNT();
2479 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
2480 SCTP_INP_INFO_WUNLOCK();
2482 so->so_pcb = (caddr_t)inp;
2484 if (SCTP_SO_TYPE(so) == SOCK_SEQPACKET) {
2485 /* UDP style socket */
2486 inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
2487 SCTP_PCB_FLAGS_UNBOUND);
2488 /* Be sure it is NON-BLOCKING IO for UDP */
2489 /* SCTP_SET_SO_NBIO(so); */
2490 } else if (SCTP_SO_TYPE(so) == SOCK_STREAM) {
2491 /* TCP style socket */
2492 inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
2493 SCTP_PCB_FLAGS_UNBOUND);
2494 /* Be sure we have blocking IO by default */
2496 SCTP_CLEAR_SO_NBIO(so);
2500 * unsupported socket type (RAW, etc)- in case we missed it
2503 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
2505 crfree(inp->ip_inp.inp.inp_cred);
2506 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2507 return (EOPNOTSUPP);
2509 if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) {
2510 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2511 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2512 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) {
2513 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2514 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2515 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) {
2516 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2517 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2519 inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize),
2520 &inp->sctp_hashmark);
2521 if (inp->sctp_tcbhash == NULL) {
2522 SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
2523 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2525 crfree(inp->ip_inp.inp.inp_cred);
2526 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2529 inp->def_vrf_id = vrf_id;
2531 SCTP_INP_INFO_WLOCK();
2532 SCTP_INP_LOCK_INIT(inp);
2533 INP_LOCK_INIT(&inp->ip_inp.inp, "inp", "sctpinp");
2534 SCTP_INP_READ_INIT(inp);
2535 SCTP_ASOC_CREATE_LOCK_INIT(inp);
2536 /* lock the new ep */
2537 SCTP_INP_WLOCK(inp);
2539 /* add it to the info area */
2540 LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list);
2541 SCTP_INP_INFO_WUNLOCK();
2543 TAILQ_INIT(&inp->read_queue);
2544 LIST_INIT(&inp->sctp_addr_list);
2546 LIST_INIT(&inp->sctp_asoc_list);
2548 #ifdef SCTP_TRACK_FREED_ASOCS
2550 LIST_INIT(&inp->sctp_asoc_free_list);
2552 /* Init the timer structure for signature change */
2553 SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer);
2554 inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE;
2556 /* now init the actual endpoint default data */
2559 /* setup the base timeout information */
2560 m->sctp_timeoutticks[SCTP_TIMER_SEND] = SEC_TO_TICKS(SCTP_SEND_SEC); /* needed ? */
2561 m->sctp_timeoutticks[SCTP_TIMER_INIT] = SEC_TO_TICKS(SCTP_INIT_SEC); /* needed ? */
2562 m->sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default));
2563 m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default));
2564 m->sctp_timeoutticks[SCTP_TIMER_PMTU] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default));
2565 m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default));
2566 m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default));
2567 /* all max/min max are in ms */
2568 m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default);
2569 m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default);
2570 m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default);
2571 m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default);
2572 m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default);
2573 m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default);
2574 m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default);
2575 m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default);
2576 m->def_net_pf_threshold = SCTP_BASE_SYSCTL(sctp_path_pf_threshold);
2577 m->sctp_sws_sender = SCTP_SWS_SENDER_DEF;
2578 m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF;
2579 m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default);
2580 m->fr_max_burst = SCTP_BASE_SYSCTL(sctp_fr_max_burst_default);
2582 m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module);
2583 m->sctp_default_ss_module = SCTP_BASE_SYSCTL(sctp_default_ss_module);
2584 m->max_open_streams_intome = SCTP_BASE_SYSCTL(sctp_nr_incoming_streams_default);
2585 /* number of streams to pre-open on a association */
2586 m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default);
2589 /* Add adaptation cookie */
2590 m->adaptation_layer_indicator = 0;
2591 m->adaptation_layer_indicator_provided = 0;
2593 /* seed random number generator */
2594 m->random_counter = 1;
2595 m->store_at = SCTP_SIGNATURE_SIZE;
2596 SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers));
2597 sctp_fill_random_store(m);
2599 /* Minimum cookie size */
2600 m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) +
2601 sizeof(struct sctp_state_cookie);
2602 m->size_of_a_cookie += SCTP_SIGNATURE_SIZE;
2604 /* Setup the initial secret */
2605 (void)SCTP_GETTIME_TIMEVAL(&time);
2606 m->time_of_secret_change = time.tv_sec;
2608 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
2609 m->secret_key[0][i] = sctp_select_initial_TSN(m);
2611 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
2613 /* How long is a cookie good for ? */
2614 m->def_cookie_life = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default));
2616 * Initialize authentication parameters
2618 m->local_hmacs = sctp_default_supported_hmaclist();
2619 m->local_auth_chunks = sctp_alloc_chunklist();
2620 if (inp->asconf_supported) {
2621 sctp_auth_add_chunk(SCTP_ASCONF, m->local_auth_chunks);
2622 sctp_auth_add_chunk(SCTP_ASCONF_ACK, m->local_auth_chunks);
2624 m->default_dscp = 0;
2626 m->default_flowlabel = 0;
2628 m->port = 0; /* encapsulation disabled by default */
2629 LIST_INIT(&m->shared_keys);
2630 /* add default NULL key as key id 0 */
2631 null_key = sctp_alloc_sharedkey();
2632 sctp_insert_sharedkey(&m->shared_keys, null_key);
2633 SCTP_INP_WUNLOCK(inp);
2634 #ifdef SCTP_LOG_CLOSING
2635 sctp_log_closing(inp, NULL, 12);
2642 sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp,
2643 struct sctp_tcb *stcb)
2645 struct sctp_nets *net;
2646 uint16_t lport, rport;
2647 struct sctppcbhead *head;
2648 struct sctp_laddr *laddr, *oladdr;
2650 atomic_add_int(&stcb->asoc.refcnt, 1);
2651 SCTP_TCB_UNLOCK(stcb);
2652 SCTP_INP_INFO_WLOCK();
2653 SCTP_INP_WLOCK(old_inp);
2654 SCTP_INP_WLOCK(new_inp);
2655 SCTP_TCB_LOCK(stcb);
2656 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2658 new_inp->sctp_ep.time_of_secret_change =
2659 old_inp->sctp_ep.time_of_secret_change;
2660 memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key,
2661 sizeof(old_inp->sctp_ep.secret_key));
2662 new_inp->sctp_ep.current_secret_number =
2663 old_inp->sctp_ep.current_secret_number;
2664 new_inp->sctp_ep.last_secret_number =
2665 old_inp->sctp_ep.last_secret_number;
2666 new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie;
2668 /* make it so new data pours into the new socket */
2669 stcb->sctp_socket = new_inp->sctp_socket;
2670 stcb->sctp_ep = new_inp;
2672 /* Copy the port across */
2673 lport = new_inp->sctp_lport = old_inp->sctp_lport;
2674 rport = stcb->rport;
2675 /* Pull the tcb from the old association */
2676 LIST_REMOVE(stcb, sctp_tcbhash);
2677 LIST_REMOVE(stcb, sctp_tcblist);
2678 if (stcb->asoc.in_asocid_hash) {
2679 LIST_REMOVE(stcb, sctp_tcbasocidhash);
2681 /* Now insert the new_inp into the TCP connected hash */
2682 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
2684 LIST_INSERT_HEAD(head, new_inp, sctp_hash);
2685 /* Its safe to access */
2686 new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
2688 /* Now move the tcb into the endpoint list */
2689 LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist);
2691 * Question, do we even need to worry about the ep-hash since we
2692 * only have one connection? Probably not :> so lets get rid of it
2693 * and not suck up any kernel memory in that.
2695 if (stcb->asoc.in_asocid_hash) {
2696 struct sctpasochead *lhd;
2698 lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id,
2699 new_inp->hashasocidmark)];
2700 LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash);
2702 /* Ok. Let's restart timer. */
2703 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2704 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp,
2708 SCTP_INP_INFO_WUNLOCK();
2709 if (new_inp->sctp_tcbhash != NULL) {
2710 SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark);
2711 new_inp->sctp_tcbhash = NULL;
2713 if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2714 /* Subset bound, so copy in the laddr list from the old_inp */
2715 LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) {
2716 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2717 if (laddr == NULL) {
2719 * Gak, what can we do? This assoc is really
2720 * HOSED. We probably should send an abort
2723 SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n");
2726 SCTP_INCR_LADDR_COUNT();
2727 memset(laddr, 0, sizeof(*laddr));
2728 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2729 laddr->ifa = oladdr->ifa;
2730 atomic_add_int(&laddr->ifa->refcount, 1);
2731 LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr,
2733 new_inp->laddr_count++;
2734 if (oladdr == stcb->asoc.last_used_address) {
2735 stcb->asoc.last_used_address = laddr;
2740 * Now any running timers need to be adjusted since we really don't
2741 * care if they are running or not just blast in the new_inp into
2745 stcb->asoc.dack_timer.ep = (void *)new_inp;
2746 stcb->asoc.asconf_timer.ep = (void *)new_inp;
2747 stcb->asoc.strreset_timer.ep = (void *)new_inp;
2748 stcb->asoc.shut_guard_timer.ep = (void *)new_inp;
2749 stcb->asoc.autoclose_timer.ep = (void *)new_inp;
2750 stcb->asoc.delayed_event_timer.ep = (void *)new_inp;
2751 stcb->asoc.delete_prim_timer.ep = (void *)new_inp;
2752 /* now what about the nets? */
2753 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2754 net->pmtu_timer.ep = (void *)new_inp;
2755 net->hb_timer.ep = (void *)new_inp;
2756 net->rxt_timer.ep = (void *)new_inp;
2758 SCTP_INP_WUNLOCK(new_inp);
2759 SCTP_INP_WUNLOCK(old_inp);
2763 * insert an laddr entry with the given ifa for the desired list
2766 sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
2768 struct sctp_laddr *laddr;
2770 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2771 if (laddr == NULL) {
2772 /* out of memory? */
2773 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2776 SCTP_INCR_LADDR_COUNT();
2777 memset(laddr, 0, sizeof(*laddr));
2778 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2780 laddr->action = act;
2781 atomic_add_int(&ifa->refcount, 1);
2783 LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr);
2789 * Remove an laddr entry from the local address list (on an assoc)
2792 sctp_remove_laddr(struct sctp_laddr *laddr)
2795 /* remove from the list */
2796 LIST_REMOVE(laddr, sctp_nxt_addr);
2797 sctp_free_ifa(laddr->ifa);
2798 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr);
2799 SCTP_DECR_LADDR_COUNT();
2804 /* sctp_ifap is used to bypass normal local address validation checks */
2806 sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
2807 struct sctp_ifa *sctp_ifap, struct thread *p)
2809 /* bind a ep to a socket address */
2810 struct sctppcbhead *head;
2811 struct sctp_inpcb *inp, *inp_tmp;
2812 struct inpcb *ip_inp;
2813 int port_reuse_active = 0;
2821 inp = (struct sctp_inpcb *)so->so_pcb;
2822 ip_inp = (struct inpcb *)so->so_pcb;
2825 SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port: %d\n",
2826 ntohs(((struct sockaddr_in *)addr)->sin_port));
2827 SCTPDBG(SCTP_DEBUG_PCB1, "Addr: ");
2828 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
2831 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2832 /* already did a bind, subsequent binds NOT allowed ! */
2833 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2838 panic("null proc/thread");
2841 switch (addr->sa_family) {
2845 struct sockaddr_in *sin;
2847 /* IPV6_V6ONLY socket? */
2848 if (SCTP_IPV6_V6ONLY(ip_inp)) {
2849 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2852 if (addr->sa_len != sizeof(*sin)) {
2853 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2857 sin = (struct sockaddr_in *)addr;
2858 lport = sin->sin_port;
2860 * For LOOPBACK the prison_local_ip4() call
2861 * will transmute the ip address to the
2864 if (p && (error = prison_local_ip4(p->td_ucred, &sin->sin_addr)) != 0) {
2865 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2868 if (sin->sin_addr.s_addr != INADDR_ANY) {
2878 * Only for pure IPv6 Address. (No IPv4
2881 struct sockaddr_in6 *sin6;
2883 sin6 = (struct sockaddr_in6 *)addr;
2885 if (addr->sa_len != sizeof(*sin6)) {
2886 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2889 lport = sin6->sin6_port;
2891 * For LOOPBACK the prison_local_ip6() call
2892 * will transmute the ipv6 address to the
2895 if (p && (error = prison_local_ip6(p->td_ucred, &sin6->sin6_addr,
2896 (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
2897 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2900 if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2902 /* KAME hack: embed scopeid */
2903 if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
2904 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2908 /* this must be cleared for ifa_ifwithaddr() */
2909 sin6->sin6_scope_id = 0;
2914 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EAFNOSUPPORT);
2915 return (EAFNOSUPPORT);
2918 SCTP_INP_INFO_WLOCK();
2919 SCTP_INP_WLOCK(inp);
2920 /* Setup a vrf_id to be the default for the non-bind-all case. */
2921 vrf_id = inp->def_vrf_id;
2923 /* increase our count due to the unlock we do */
2924 SCTP_INP_INCR_REF(inp);
2927 * Did the caller specify a port? if so we must see if an ep
2928 * already has this one bound.
2930 /* got to be root to get at low ports */
2931 if (ntohs(lport) < IPPORT_RESERVED) {
2932 if ((p != NULL) && ((error =
2933 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2935 SCTP_INP_DECR_REF(inp);
2936 SCTP_INP_WUNLOCK(inp);
2937 SCTP_INP_INFO_WUNLOCK();
2941 SCTP_INP_WUNLOCK(inp);
2943 vrf_id = inp->def_vrf_id;
2944 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2945 if (inp_tmp != NULL) {
2947 * lock guy returned and lower count note
2948 * that we are not bound so inp_tmp should
2949 * NEVER be inp. And it is this inp
2950 * (inp_tmp) that gets the reference bump,
2951 * so we must lower it.
2953 SCTP_INP_DECR_REF(inp_tmp);
2955 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2956 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2958 * Ok, must be one-2-one and
2959 * allowing port re-use
2961 port_reuse_active = 1;
2962 goto continue_anyway;
2964 SCTP_INP_DECR_REF(inp);
2965 SCTP_INP_INFO_WUNLOCK();
2966 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2967 return (EADDRINUSE);
2970 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2971 if (inp_tmp != NULL) {
2973 * lock guy returned and lower count note
2974 * that we are not bound so inp_tmp should
2975 * NEVER be inp. And it is this inp
2976 * (inp_tmp) that gets the reference bump,
2977 * so we must lower it.
2979 SCTP_INP_DECR_REF(inp_tmp);
2981 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2982 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2984 * Ok, must be one-2-one and
2985 * allowing port re-use
2987 port_reuse_active = 1;
2988 goto continue_anyway;
2990 SCTP_INP_DECR_REF(inp);
2991 SCTP_INP_INFO_WUNLOCK();
2992 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2993 return (EADDRINUSE);
2997 SCTP_INP_WLOCK(inp);
2999 /* verify that no lport is not used by a singleton */
3000 if ((port_reuse_active == 0) &&
3001 (inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))) {
3002 /* Sorry someone already has this one bound */
3003 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
3004 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
3005 port_reuse_active = 1;
3007 SCTP_INP_DECR_REF(inp);
3008 SCTP_INP_WUNLOCK(inp);
3009 SCTP_INP_INFO_WUNLOCK();
3010 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3011 return (EADDRINUSE);
3016 uint16_t first, last, candidate;
3020 if (ip_inp->inp_flags & INP_HIGHPORT) {
3021 first = MODULE_GLOBAL(ipport_hifirstauto);
3022 last = MODULE_GLOBAL(ipport_hilastauto);
3023 } else if (ip_inp->inp_flags & INP_LOWPORT) {
3025 priv_check(p, PRIV_NETINET_RESERVEDPORT)
3027 SCTP_INP_DECR_REF(inp);
3028 SCTP_INP_WUNLOCK(inp);
3029 SCTP_INP_INFO_WUNLOCK();
3030 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
3033 first = MODULE_GLOBAL(ipport_lowfirstauto);
3034 last = MODULE_GLOBAL(ipport_lowlastauto);
3036 first = MODULE_GLOBAL(ipport_firstauto);
3037 last = MODULE_GLOBAL(ipport_lastauto);
3046 count = last - first + 1; /* number of candidates */
3047 candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count);
3051 if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) {
3056 SCTP_INP_DECR_REF(inp);
3057 SCTP_INP_WUNLOCK(inp);
3058 SCTP_INP_INFO_WUNLOCK();
3059 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3060 return (EADDRINUSE);
3062 if (candidate == last)
3065 candidate = candidate + 1;
3068 lport = htons(candidate);
3070 SCTP_INP_DECR_REF(inp);
3071 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE |
3072 SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
3074 * this really should not happen. The guy did a non-blocking
3075 * bind and then did a close at the same time.
3077 SCTP_INP_WUNLOCK(inp);
3078 SCTP_INP_INFO_WUNLOCK();
3079 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3082 /* ok we look clear to give out this port, so lets setup the binding */
3084 /* binding to all addresses, so just set in the proper flags */
3085 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL;
3086 /* set the automatic addr changes from kernel flag */
3087 if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) {
3088 sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3089 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3091 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3092 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3094 if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) {
3095 sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3097 sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3100 * set the automatic mobility_base from kernel flag (by
3103 if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) {
3104 sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE);
3105 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3107 sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE);
3108 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3111 * set the automatic mobility_fasthandoff from kernel flag
3114 if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) {
3115 sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF);
3116 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3118 sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF);
3119 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3123 * bind specific, make sure flags is off and add a new
3124 * address structure to the sctp_addr_list inside the ep
3127 * We will need to allocate one and insert it at the head.
3128 * The socketopt call can just insert new addresses in there
3129 * as well. It will also have to do the embed scope kame
3130 * hack too (before adding).
3132 struct sctp_ifa *ifa;
3133 union sctp_sockstore store;
3135 memset(&store, 0, sizeof(store));
3136 switch (addr->sa_family) {
3139 memcpy(&store.sin, addr, sizeof(struct sockaddr_in));
3140 store.sin.sin_port = 0;
3145 memcpy(&store.sin6, addr, sizeof(struct sockaddr_in6));
3146 store.sin6.sin6_port = 0;
3153 * first find the interface with the bound address need to
3154 * zero out the port to find the address! yuck! can't do
3155 * this earlier since need port for sctp_pcb_findep()
3157 if (sctp_ifap != NULL) {
3161 * Note for BSD we hit here always other O/S's will
3162 * pass things in via the sctp_ifap argument
3165 ifa = sctp_find_ifa_by_addr(&store.sa,
3166 vrf_id, SCTP_ADDR_NOT_LOCKED);
3169 /* Can't find an interface with that address */
3170 SCTP_INP_WUNLOCK(inp);
3171 SCTP_INP_INFO_WUNLOCK();
3172 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRNOTAVAIL);
3173 return (EADDRNOTAVAIL);
3176 if (addr->sa_family == AF_INET6) {
3177 /* GAK, more FIXME IFA lock? */
3178 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
3179 /* Can't bind a non-existent addr. */
3180 SCTP_INP_WUNLOCK(inp);
3181 SCTP_INP_INFO_WUNLOCK();
3182 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3187 /* we're not bound all */
3188 inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL;
3189 /* allow bindx() to send ASCONF's for binding changes */
3190 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3191 /* clear automatic addr changes from kernel flag */
3192 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3194 /* add this address to the endpoint list */
3195 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0);
3197 SCTP_INP_WUNLOCK(inp);
3198 SCTP_INP_INFO_WUNLOCK();
3203 /* find the bucket */
3204 if (port_reuse_active) {
3205 /* Put it into tcp 1-2-1 hash */
3206 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))];
3207 inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
3209 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))];
3211 /* put it in the bucket */
3212 LIST_INSERT_HEAD(head, inp, sctp_hash);
3213 SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n",
3214 (void *)head, ntohs(lport), port_reuse_active);
3215 /* set in the port */
3216 inp->sctp_lport = lport;
3218 /* turn off just the unbound flag */
3219 inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
3220 SCTP_INP_WUNLOCK(inp);
3221 SCTP_INP_INFO_WUNLOCK();
3227 sctp_iterator_inp_being_freed(struct sctp_inpcb *inp)
3229 struct sctp_iterator *it, *nit;
3232 * We enter with the only the ITERATOR_LOCK in place and a write
3233 * lock on the inp_info stuff.
3235 it = sctp_it_ctl.cur_it;
3236 if (it && (it->vn != curvnet)) {
3237 /* Its not looking at our VNET */
3240 if (it && (it->inp == inp)) {
3242 * This is tricky and we hold the iterator lock, but when it
3243 * returns and gets the lock (when we release it) the
3244 * iterator will try to operate on inp. We need to stop that
3245 * from happening. But of course the iterator has a
3246 * reference on the stcb and inp. We can mark it and it will
3249 * If its a single iterator situation, we set the end
3250 * iterator flag. Otherwise we set the iterator to go to the
3254 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3255 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
3257 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_INP;
3261 * Now go through and remove any single reference to our inp that
3262 * may be still pending on the list
3264 SCTP_IPI_ITERATOR_WQ_LOCK();
3265 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
3266 if (it->vn != curvnet) {
3269 if (it->inp == inp) {
3270 /* This one points to me is it inp specific? */
3271 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3272 /* Remove and free this one */
3273 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
3275 if (it->function_atend != NULL) {
3276 (*it->function_atend) (it->pointer, it->val);
3278 SCTP_FREE(it, SCTP_M_ITER);
3280 it->inp = LIST_NEXT(it->inp, sctp_list);
3282 SCTP_INP_INCR_REF(it->inp);
3286 * When its put in the refcnt is incremented so decr
3289 SCTP_INP_DECR_REF(inp);
3292 SCTP_IPI_ITERATOR_WQ_UNLOCK();
3295 /* release sctp_inpcb unbind the port */
3297 sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
3300 * Here we free a endpoint. We must find it (if it is in the Hash
3301 * table) and remove it from there. Then we must also find it in the
3302 * overall list and remove it from there. After all removals are
3303 * complete then any timer has to be stopped. Then start the actual
3304 * freeing. a) Any local lists. b) Any associations. c) The hash of
3305 * all associations. d) finally the ep itself.
3307 struct sctp_tcb *asoc, *nasoc;
3308 struct sctp_laddr *laddr, *nladdr;
3309 struct inpcb *ip_pcb;
3311 int being_refed = 0;
3312 struct sctp_queued_to_read *sq, *nsq;
3314 sctp_sharedkey_t *shared_key, *nshared_key;
3317 #ifdef SCTP_LOG_CLOSING
3318 sctp_log_closing(inp, NULL, 0);
3320 SCTP_ITERATOR_LOCK();
3321 /* mark any iterators on the list or being processed */
3322 sctp_iterator_inp_being_freed(inp);
3323 SCTP_ITERATOR_UNLOCK();
3324 so = inp->sctp_socket;
3325 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
3326 /* been here before.. eeks.. get out of here */
3327 SCTP_PRINTF("This conflict in free SHOULD not be happening! from %d, imm %d\n", from, immediate);
3328 #ifdef SCTP_LOG_CLOSING
3329 sctp_log_closing(inp, NULL, 1);
3333 SCTP_ASOC_CREATE_LOCK(inp);
3334 SCTP_INP_INFO_WLOCK();
3336 SCTP_INP_WLOCK(inp);
3337 if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
3338 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP;
3339 /* socket is gone, so no more wakeups allowed */
3340 inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE;
3341 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
3342 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
3345 /* First time through we have the socket lock, after that no more. */
3346 sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL,
3347 SCTP_FROM_SCTP_PCB + SCTP_LOC_1);
3350 sctp_m_freem(inp->control);
3351 inp->control = NULL;
3354 sctp_m_freem(inp->pkt);
3357 ip_pcb = &inp->ip_inp.inp; /* we could just cast the main pointer
3358 * here but I will be nice :> (i.e.
3360 if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
3364 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3365 SCTP_TCB_LOCK(asoc);
3366 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3367 /* Skip guys being freed */
3369 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3371 * Special case - we did not start a
3372 * kill timer on the asoc due to it
3373 * was not closed. So go ahead and
3376 SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_IN_ACCEPT_QUEUE);
3377 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3379 SCTP_TCB_UNLOCK(asoc);
3382 if (((SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_WAIT) ||
3383 (SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_ECHOED)) &&
3384 (asoc->asoc.total_output_queue_size == 0)) {
3386 * If we have data in queue, we don't want
3387 * to just free since the app may have done,
3388 * send()/close or connect/send/close. And
3389 * it wants the data to get across first.
3391 /* Just abandon things in the front states */
3392 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE,
3393 SCTP_FROM_SCTP_PCB + SCTP_LOC_2) == 0) {
3398 /* Disconnect the socket please */
3399 asoc->sctp_socket = NULL;
3400 SCTP_ADD_SUBSTATE(asoc, SCTP_STATE_CLOSED_SOCKET);
3401 if ((asoc->asoc.size_on_reasm_queue > 0) ||
3402 (asoc->asoc.control_pdapi) ||
3403 (asoc->asoc.size_on_all_streams > 0) ||
3404 (so && (so->so_rcv.sb_cc > 0))) {
3405 /* Left with Data unread */
3406 struct mbuf *op_err;
3408 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3409 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_3;
3410 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3411 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3412 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
3413 (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3414 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3416 if (sctp_free_assoc(inp, asoc,
3417 SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_4) == 0) {
3421 } else if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3422 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3423 (asoc->asoc.stream_queue_cnt == 0)) {
3424 if ((*asoc->asoc.ss_functions.sctp_ss_is_user_msgs_incomplete) (asoc, &asoc->asoc)) {
3427 if ((SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
3428 (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
3429 struct sctp_nets *netp;
3432 * there is nothing queued to send,
3433 * so I send shutdown
3435 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
3436 (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3437 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3439 SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT);
3440 sctp_stop_timers_for_shutdown(asoc);
3441 if (asoc->asoc.alternate) {
3442 netp = asoc->asoc.alternate;
3444 netp = asoc->asoc.primary_destination;
3446 sctp_send_shutdown(asoc, netp);
3447 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, asoc->sctp_ep, asoc,
3449 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3450 asoc->asoc.primary_destination);
3451 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED);
3454 /* mark into shutdown pending */
3455 SCTP_ADD_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING);
3456 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3457 asoc->asoc.primary_destination);
3458 if ((*asoc->asoc.ss_functions.sctp_ss_is_user_msgs_incomplete) (asoc, &asoc->asoc)) {
3459 SCTP_ADD_SUBSTATE(asoc, SCTP_STATE_PARTIAL_MSG_LEFT);
3461 if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3462 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3463 (asoc->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
3464 struct mbuf *op_err;
3467 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3468 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_5;
3469 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3470 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3471 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
3472 (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3473 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3475 if (sctp_free_assoc(inp, asoc,
3476 SCTP_PCBFREE_NOFORCE,
3477 SCTP_FROM_SCTP_PCB + SCTP_LOC_6) == 0) {
3482 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
3486 SCTP_TCB_UNLOCK(asoc);
3488 /* now is there some left in our SHUTDOWN state? */
3490 #ifdef SCTP_LOG_CLOSING
3491 sctp_log_closing(inp, NULL, 2);
3493 inp->sctp_socket = NULL;
3494 SCTP_INP_WUNLOCK(inp);
3495 SCTP_ASOC_CREATE_UNLOCK(inp);
3496 SCTP_INP_INFO_WUNLOCK();
3500 inp->sctp_socket = NULL;
3501 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) !=
3502 SCTP_PCB_FLAGS_UNBOUND) {
3504 * ok, this guy has been bound. It's port is somewhere in
3505 * the SCTP_BASE_INFO(hash table). Remove it!
3507 LIST_REMOVE(inp, sctp_hash);
3508 inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND;
3512 * If there is a timer running to kill us, forget it, since it may
3513 * have a contest on the INP lock.. which would cause us to die ...
3516 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3517 SCTP_TCB_LOCK(asoc);
3518 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3519 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3520 SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_IN_ACCEPT_QUEUE);
3521 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3524 SCTP_TCB_UNLOCK(asoc);
3527 /* Free associations that are NOT killing us */
3528 if ((SCTP_GET_STATE(asoc) != SCTP_STATE_COOKIE_WAIT) &&
3529 ((asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) {
3530 struct mbuf *op_err;
3532 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3533 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_7;
3534 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3535 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3536 } else if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3538 SCTP_TCB_UNLOCK(asoc);
3541 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
3542 (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3543 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3545 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_FORCE,
3546 SCTP_FROM_SCTP_PCB + SCTP_LOC_8) == 0) {
3551 /* Ok we have someone out there that will kill us */
3552 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3553 #ifdef SCTP_LOG_CLOSING
3554 sctp_log_closing(inp, NULL, 3);
3556 SCTP_INP_WUNLOCK(inp);
3557 SCTP_ASOC_CREATE_UNLOCK(inp);
3558 SCTP_INP_INFO_WUNLOCK();
3561 if (SCTP_INP_LOCK_CONTENDED(inp))
3563 if (SCTP_INP_READ_CONTENDED(inp))
3565 if (SCTP_ASOC_CREATE_LOCK_CONTENDED(inp))
3568 if ((inp->refcount) ||
3570 (inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) {
3571 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3572 #ifdef SCTP_LOG_CLOSING
3573 sctp_log_closing(inp, NULL, 4);
3575 sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
3576 SCTP_INP_WUNLOCK(inp);
3577 SCTP_ASOC_CREATE_UNLOCK(inp);
3578 SCTP_INP_INFO_WUNLOCK();
3581 inp->sctp_ep.signature_change.type = 0;
3582 inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE;
3584 * Remove it from the list .. last thing we need a lock for.
3586 LIST_REMOVE(inp, sctp_list);
3587 SCTP_INP_WUNLOCK(inp);
3588 SCTP_ASOC_CREATE_UNLOCK(inp);
3589 SCTP_INP_INFO_WUNLOCK();
3591 * Now we release all locks. Since this INP cannot be found anymore
3592 * except possibly by the kill timer that might be running. We call
3593 * the drain function here. It should hit the case were it sees the
3594 * ACTIVE flag cleared and exit out freeing us to proceed and
3595 * destroy everything.
3597 if (from != SCTP_CALLED_FROM_INPKILL_TIMER) {
3598 (void)SCTP_OS_TIMER_STOP_DRAIN(&inp->sctp_ep.signature_change.timer);
3600 /* Probably un-needed */
3601 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3604 #ifdef SCTP_LOG_CLOSING
3605 sctp_log_closing(inp, NULL, 5);
3609 if ((inp->sctp_asocidhash) != NULL) {
3610 SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark);
3611 inp->sctp_asocidhash = NULL;
3613 /* sa_ignore FREED_MEMORY */
3614 TAILQ_FOREACH_SAFE(sq, &inp->read_queue, next, nsq) {
3615 /* Its only abandoned if it had data left */
3617 SCTP_STAT_INCR(sctps_left_abandon);
3619 TAILQ_REMOVE(&inp->read_queue, sq, next);
3620 sctp_free_remote_addr(sq->whoFrom);
3622 so->so_rcv.sb_cc -= sq->length;
3624 sctp_m_freem(sq->data);
3628 * no need to free the net count, since at this point all
3631 sctp_free_a_readq(NULL, sq);
3633 /* Now the sctp_pcb things */
3635 * free each asoc if it is not already closed/free. we can't use the
3636 * macro here since le_next will get freed as part of the
3637 * sctp_free_assoc() call.
3639 if (ip_pcb->inp_options) {
3640 (void)sctp_m_free(ip_pcb->inp_options);
3641 ip_pcb->inp_options = 0;
3646 if (ip_pcb->inp_vflag & INP_IPV6) {
3647 struct in6pcb *in6p;
3649 in6p = (struct in6pcb *)inp;
3650 ip6_freepcbopts(in6p->in6p_outputopts);
3653 ip_pcb->inp_vflag = 0;
3654 /* free up authentication fields */
3655 if (inp->sctp_ep.local_auth_chunks != NULL)
3656 sctp_free_chunklist(inp->sctp_ep.local_auth_chunks);
3657 if (inp->sctp_ep.local_hmacs != NULL)
3658 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3660 LIST_FOREACH_SAFE(shared_key, &inp->sctp_ep.shared_keys, next, nshared_key) {
3661 LIST_REMOVE(shared_key, next);
3662 sctp_free_sharedkey(shared_key);
3663 /* sa_ignore FREED_MEMORY */
3667 * if we have an address list the following will free the list of
3668 * ifaddr's that are set into this ep. Again macro limitations here,
3669 * since the LIST_FOREACH could be a bad idea.
3671 LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
3672 sctp_remove_laddr(laddr);
3675 #ifdef SCTP_TRACK_FREED_ASOCS
3677 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_free_list, sctp_tcblist, nasoc) {
3678 LIST_REMOVE(asoc, sctp_tcblist);
3679 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), asoc);
3680 SCTP_DECR_ASOC_COUNT();
3682 /* *** END TEMP CODE *** */
3684 /* Now lets see about freeing the EP hash table. */
3685 if (inp->sctp_tcbhash != NULL) {
3686 SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
3687 inp->sctp_tcbhash = NULL;
3689 /* Now we must put the ep memory back into the zone pool */
3690 crfree(inp->ip_inp.inp.inp_cred);
3691 INP_LOCK_DESTROY(&inp->ip_inp.inp);
3692 SCTP_INP_LOCK_DESTROY(inp);
3693 SCTP_INP_READ_DESTROY(inp);
3694 SCTP_ASOC_CREATE_LOCK_DESTROY(inp);
3695 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
3696 SCTP_DECR_EP_COUNT();
3701 sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
3703 struct sctp_nets *net;
3705 /* locate the address */
3706 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3707 if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr))
3715 sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
3717 struct sctp_ifa *sctp_ifa;
3719 sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED);
3728 * add's a remote endpoint address, done with the INIT/INIT-ACK as well as
3729 * when a ASCONF arrives that adds it. It will also initialize all the cwnd
3733 sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
3734 struct sctp_nets **netp, uint16_t port, int set_scope, int from)
3737 * The following is redundant to the same lines in the
3738 * sctp_aloc_assoc() but is needed since others call the add address
3741 struct sctp_nets *net, *netfirst;
3744 SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ",
3746 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr);
3748 netfirst = sctp_findnet(stcb, newaddr);
3751 * Lie and return ok, we don't want to make the association
3752 * go away for this behavior. It will happen in the TCP
3753 * model in a connected socket. It does not reach the hash
3754 * table until after the association is built so it can't be
3755 * found. Mark as reachable, since the initial creation will
3756 * have been cleared and the NOT_IN_ASSOC flag will have
3757 * been added... and we don't want to end up removing it
3760 if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) {
3761 netfirst->dest_state = (SCTP_ADDR_REACHABLE |
3762 SCTP_ADDR_UNCONFIRMED);
3764 netfirst->dest_state = SCTP_ADDR_REACHABLE;
3770 switch (newaddr->sa_family) {
3774 struct sockaddr_in *sin;
3776 sin = (struct sockaddr_in *)newaddr;
3777 if (sin->sin_addr.s_addr == 0) {
3778 /* Invalid address */
3781 /* zero out the zero area */
3782 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
3784 /* assure len is set */
3785 sin->sin_len = sizeof(struct sockaddr_in);
3787 if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
3788 stcb->asoc.scope.ipv4_local_scope = 1;
3791 /* Validate the address is in scope */
3792 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) &&
3793 (stcb->asoc.scope.ipv4_local_scope == 0)) {
3803 struct sockaddr_in6 *sin6;
3805 sin6 = (struct sockaddr_in6 *)newaddr;
3806 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3807 /* Invalid address */
3810 /* assure len is set */
3811 sin6->sin6_len = sizeof(struct sockaddr_in6);
3813 if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) {
3814 stcb->asoc.scope.loopback_scope = 1;
3815 stcb->asoc.scope.local_scope = 0;
3816 stcb->asoc.scope.ipv4_local_scope = 1;
3817 stcb->asoc.scope.site_scope = 1;
3818 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
3820 * If the new destination is a
3821 * LINK_LOCAL we must have common
3822 * site scope. Don't set the local
3823 * scope since we may not share all
3824 * links, only loopback can do this.
3825 * Links on the local network would
3826 * also be on our private network
3829 stcb->asoc.scope.ipv4_local_scope = 1;
3830 stcb->asoc.scope.site_scope = 1;
3831 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
3833 * If the new destination is
3834 * SITE_LOCAL then we must have site
3837 stcb->asoc.scope.site_scope = 1;
3840 /* Validate the address is in scope */
3841 if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) &&
3842 (stcb->asoc.scope.loopback_scope == 0)) {
3844 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
3845 (stcb->asoc.scope.local_scope == 0)) {
3847 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
3848 (stcb->asoc.scope.site_scope == 0)) {
3856 /* not supported family type */
3859 net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets);
3863 SCTP_INCR_RADDR_COUNT();
3864 memset(net, 0, sizeof(struct sctp_nets));
3865 (void)SCTP_GETTIME_TIMEVAL(&net->start_time);
3866 memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len);
3867 switch (newaddr->sa_family) {
3870 ((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport;
3875 ((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport;
3881 net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id);
3882 if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) {
3883 stcb->asoc.scope.loopback_scope = 1;
3884 stcb->asoc.scope.ipv4_local_scope = 1;
3885 stcb->asoc.scope.local_scope = 0;
3886 stcb->asoc.scope.site_scope = 1;
3889 net->failure_threshold = stcb->asoc.def_net_failure;
3890 net->pf_threshold = stcb->asoc.def_net_pf_threshold;
3891 if (addr_inscope == 0) {
3892 net->dest_state = (SCTP_ADDR_REACHABLE |
3893 SCTP_ADDR_OUT_OF_SCOPE);
3895 if (from == SCTP_ADDR_IS_CONFIRMED)
3896 /* SCTP_ADDR_IS_CONFIRMED is passed by connect_x */
3897 net->dest_state = SCTP_ADDR_REACHABLE;
3899 net->dest_state = SCTP_ADDR_REACHABLE |
3900 SCTP_ADDR_UNCONFIRMED;
3903 * We set this to 0, the timer code knows that this means its an
3906 net->rto_needed = 1;
3908 net->RTO_measured = 0;
3909 stcb->asoc.numnets++;
3911 net->cwr_window_tsn = net->last_cwr_tsn = stcb->asoc.sending_seq - 1;
3913 net->dscp = stcb->asoc.default_dscp;
3915 net->flowlabel = stcb->asoc.default_flowlabel;
3917 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
3918 net->dest_state |= SCTP_ADDR_NOHB;
3920 net->dest_state &= ~SCTP_ADDR_NOHB;
3922 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DO_NOT_PMTUD)) {
3923 net->dest_state |= SCTP_ADDR_NO_PMTUD;
3925 net->dest_state &= ~SCTP_ADDR_NO_PMTUD;
3927 net->heart_beat_delay = stcb->asoc.heart_beat_delay;
3928 /* Init the timer structure */
3929 SCTP_OS_TIMER_INIT(&net->rxt_timer.timer);
3930 SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer);
3931 SCTP_OS_TIMER_INIT(&net->hb_timer.timer);
3933 /* Now generate a route for this guy */
3935 /* KAME hack: embed scopeid */
3936 if (newaddr->sa_family == AF_INET6) {
3937 struct sockaddr_in6 *sin6;
3939 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3940 (void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone));
3941 sin6->sin6_scope_id = 0;
3944 SCTP_RTALLOC((sctp_route_t *)&net->ro,
3946 stcb->sctp_ep->fibnum);
3948 net->src_addr_selected = 0;
3949 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) {
3950 /* Get source address */
3951 net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep,
3953 (sctp_route_t *)&net->ro,
3957 if (stcb->asoc.default_mtu > 0) {
3958 net->mtu = stcb->asoc.default_mtu;
3959 switch (net->ro._l_addr.sa.sa_family) {
3962 net->mtu += SCTP_MIN_V4_OVERHEAD;
3967 net->mtu += SCTP_MIN_OVERHEAD;
3973 #if defined(INET) || defined(INET6)
3975 net->mtu += (uint32_t)sizeof(struct udphdr);
3978 } else if (net->ro._s_addr != NULL) {
3979 uint32_t imtu, rmtu, hcmtu;
3981 net->src_addr_selected = 1;
3982 /* Now get the interface MTU */
3983 if (net->ro._s_addr->ifn_p != NULL) {
3984 imtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p);
3988 rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_rt);
3989 hcmtu = sctp_hc_get_mtu(&net->ro._l_addr, stcb->sctp_ep->fibnum);
3990 net->mtu = sctp_min_mtu(hcmtu, rmtu, imtu);
3993 * Start things off to match mtu of
3996 SCTP_SET_MTU_OF_ROUTE(&net->ro._l_addr.sa,
3997 net->ro.ro_rt, net->mtu);
4001 if (net->mtu == 0) {
4002 if (stcb->asoc.default_mtu > 0) {
4003 net->mtu = stcb->asoc.default_mtu;
4004 switch (net->ro._l_addr.sa.sa_family) {
4007 net->mtu += SCTP_MIN_V4_OVERHEAD;
4012 net->mtu += SCTP_MIN_OVERHEAD;
4018 #if defined(INET) || defined(INET6)
4020 net->mtu += (uint32_t)sizeof(struct udphdr);
4024 switch (newaddr->sa_family) {
4027 net->mtu = SCTP_DEFAULT_MTU;
4040 #if defined(INET) || defined(INET6)
4042 net->mtu -= (uint32_t)sizeof(struct udphdr);
4045 if (from == SCTP_ALLOC_ASOC) {
4046 stcb->asoc.smallest_mtu = net->mtu;
4048 if (stcb->asoc.smallest_mtu > net->mtu) {
4049 sctp_pathmtu_adjustment(stcb, net->mtu);
4052 if (newaddr->sa_family == AF_INET6) {
4053 struct sockaddr_in6 *sin6;
4055 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
4056 (void)sa6_recoverscope(sin6);
4060 /* JRS - Use the congestion control given in the CC module */
4061 if (stcb->asoc.cc_functions.sctp_set_initial_cc_param != NULL)
4062 (*stcb->asoc.cc_functions.sctp_set_initial_cc_param) (stcb, net);
4065 * CMT: CUC algo - set find_pseudo_cumack to TRUE (1) at beginning
4066 * of assoc (2005/06/27, iyengar@cis.udel.edu)
4068 net->find_pseudo_cumack = 1;
4069 net->find_rtx_pseudo_cumack = 1;
4070 /* Choose an initial flowid. */
4071 net->flowid = stcb->asoc.my_vtag ^
4072 ntohs(stcb->rport) ^
4073 ntohs(stcb->sctp_ep->sctp_lport);
4074 net->flowtype = M_HASHTYPE_OPAQUE_HASH;
4078 netfirst = TAILQ_FIRST(&stcb->asoc.nets);
4079 if (net->ro.ro_rt == NULL) {
4080 /* Since we have no route put it at the back */
4081 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4082 } else if (netfirst == NULL) {
4083 /* We are the first one in the pool. */
4084 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4085 } else if (netfirst->ro.ro_rt == NULL) {
4087 * First one has NO route. Place this one ahead of the first
4090 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4091 } else if (net->ro.ro_rt->rt_ifp != netfirst->ro.ro_rt->rt_ifp) {
4093 * This one has a different interface than the one at the
4094 * top of the list. Place it ahead.
4096 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4099 * Ok we have the same interface as the first one. Move
4100 * forward until we find either a) one with a NULL route...
4101 * insert ahead of that b) one with a different ifp.. insert
4102 * after that. c) end of the list.. insert at the tail.
4104 struct sctp_nets *netlook;
4107 netlook = TAILQ_NEXT(netfirst, sctp_next);
4108 if (netlook == NULL) {
4109 /* End of the list */
4110 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4112 } else if (netlook->ro.ro_rt == NULL) {
4113 /* next one has NO route */
4114 TAILQ_INSERT_BEFORE(netfirst, net, sctp_next);
4116 } else if (netlook->ro.ro_rt->rt_ifp != net->ro.ro_rt->rt_ifp) {
4117 TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook,
4123 } while (netlook != NULL);
4126 /* got to have a primary set */
4127 if (stcb->asoc.primary_destination == 0) {
4128 stcb->asoc.primary_destination = net;
4129 } else if ((stcb->asoc.primary_destination->ro.ro_rt == NULL) &&
4131 ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
4132 /* No route to current primary adopt new primary */
4133 stcb->asoc.primary_destination = net;
4135 /* Validate primary is first */
4136 net = TAILQ_FIRST(&stcb->asoc.nets);
4137 if ((net != stcb->asoc.primary_destination) &&
4138 (stcb->asoc.primary_destination)) {
4140 * first one on the list is NOT the primary sctp_cmpaddr()
4141 * is much more efficient if the primary is the first on the
4144 TAILQ_REMOVE(&stcb->asoc.nets,
4145 stcb->asoc.primary_destination, sctp_next);
4146 TAILQ_INSERT_HEAD(&stcb->asoc.nets,
4147 stcb->asoc.primary_destination, sctp_next);
4154 sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
4157 struct sctpasochead *head;
4158 struct sctp_tcb *lstcb;
4161 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
4166 * We don't allow assoc id to be one of SCTP_FUTURE_ASSOC,
4167 * SCTP_CURRENT_ASSOC and SCTP_ALL_ASSOC.
4169 if (inp->sctp_associd_counter <= SCTP_ALL_ASSOC) {
4170 inp->sctp_associd_counter = SCTP_ALL_ASSOC + 1;
4172 id = inp->sctp_associd_counter;
4173 inp->sctp_associd_counter++;
4174 lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t)id, 0);
4178 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
4179 LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash);
4180 stcb->asoc.in_asocid_hash = 1;
4185 * allocate an association and add it to the endpoint. The caller must be
4186 * careful to add all additional addresses once they are know right away or
4187 * else the assoc will be may experience a blackout scenario.
4190 sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
4191 int *error, uint32_t override_tag, uint32_t vrf_id,
4192 uint16_t o_streams, uint16_t port,
4194 int initialize_auth_params)
4196 /* note the p argument is only valid in unbound sockets */
4198 struct sctp_tcb *stcb;
4199 struct sctp_association *asoc;
4200 struct sctpasochead *head;
4205 * Assumption made here: Caller has done a
4206 * sctp_findassociation_ep_addr(ep, addr's); to make sure the
4207 * address does not exist already.
4209 if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) {
4210 /* Hit max assoc, sorry no more */
4211 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4215 if (firstaddr == NULL) {
4216 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4220 SCTP_INP_RLOCK(inp);
4221 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
4222 ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) ||
4223 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4225 * If its in the TCP pool, its NOT allowed to create an
4226 * association. The parent listener needs to call
4227 * sctp_aloc_assoc.. or the one-2-many socket. If a peeled
4228 * off, or connected one does this.. its an error.
4230 SCTP_INP_RUNLOCK(inp);
4231 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4235 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
4236 (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)) {
4237 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) ||
4238 (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED)) {
4239 SCTP_INP_RUNLOCK(inp);
4240 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4245 SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:");
4248 SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr);
4249 switch (firstaddr->sa_family) {
4252 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4253 ntohs(((struct sockaddr_in *)firstaddr)->sin_port));
4258 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4259 ntohs(((struct sockaddr_in6 *)firstaddr)->sin6_port));
4266 SCTPDBG(SCTP_DEBUG_PCB3, "None\n");
4268 #endif /* SCTP_DEBUG */
4269 switch (firstaddr->sa_family) {
4273 struct sockaddr_in *sin;
4275 sin = (struct sockaddr_in *)firstaddr;
4276 if ((ntohs(sin->sin_port) == 0) ||
4277 (sin->sin_addr.s_addr == INADDR_ANY) ||
4278 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
4279 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
4280 /* Invalid address */
4281 SCTP_INP_RUNLOCK(inp);
4282 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4286 rport = sin->sin_port;
4293 struct sockaddr_in6 *sin6;
4295 sin6 = (struct sockaddr_in6 *)firstaddr;
4296 if ((ntohs(sin6->sin6_port) == 0) ||
4297 IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
4298 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
4299 /* Invalid address */
4300 SCTP_INP_RUNLOCK(inp);
4301 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4305 rport = sin6->sin6_port;
4310 /* not supported family type */
4311 SCTP_INP_RUNLOCK(inp);
4312 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4316 SCTP_INP_RUNLOCK(inp);
4317 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4319 * If you have not performed a bind, then we need to do the
4320 * ephemeral bind for you.
4322 if ((err = sctp_inpcb_bind(inp->sctp_socket,
4323 (struct sockaddr *)NULL,
4324 (struct sctp_ifa *)NULL,
4327 /* bind error, probably perm */
4332 stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb);
4334 /* out of memory? */
4335 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
4339 SCTP_INCR_ASOC_COUNT();
4341 memset(stcb, 0, sizeof(*stcb));
4344 SCTP_TCB_LOCK_INIT(stcb);
4345 SCTP_TCB_SEND_LOCK_INIT(stcb);
4346 stcb->rport = rport;
4347 /* setup back pointer's */
4348 stcb->sctp_ep = inp;
4349 stcb->sctp_socket = inp->sctp_socket;
4350 if ((err = sctp_init_asoc(inp, stcb, override_tag, vrf_id, o_streams))) {
4352 SCTP_TCB_LOCK_DESTROY(stcb);
4353 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4354 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4355 SCTP_DECR_ASOC_COUNT();
4360 SCTP_INP_INFO_WLOCK();
4361 SCTP_INP_WLOCK(inp);
4362 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
4363 /* inpcb freed while alloc going on */
4364 SCTP_TCB_LOCK_DESTROY(stcb);
4365 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4366 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4367 SCTP_INP_WUNLOCK(inp);
4368 SCTP_INP_INFO_WUNLOCK();
4369 SCTP_DECR_ASOC_COUNT();
4370 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4374 SCTP_TCB_LOCK(stcb);
4376 asoc->assoc_id = sctp_aloc_a_assoc_id(inp, stcb);
4377 /* now that my_vtag is set, add it to the hash */
4378 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))];
4379 /* put it in the bucket in the vtag hash of assoc's for the system */
4380 LIST_INSERT_HEAD(head, stcb, sctp_asocs);
4381 SCTP_INP_INFO_WUNLOCK();
4383 if ((err = sctp_add_remote_addr(stcb, firstaddr, NULL, port, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC))) {
4384 /* failure.. memory error? */
4385 if (asoc->strmout) {
4386 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4387 asoc->strmout = NULL;
4389 if (asoc->mapping_array) {
4390 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4391 asoc->mapping_array = NULL;
4393 if (asoc->nr_mapping_array) {
4394 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4395 asoc->nr_mapping_array = NULL;
4397 SCTP_DECR_ASOC_COUNT();
4398 SCTP_TCB_UNLOCK(stcb);
4399 SCTP_TCB_LOCK_DESTROY(stcb);
4400 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4401 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4402 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4403 SCTP_INP_WUNLOCK(inp);
4404 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4408 /* Init all the timers */
4409 SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer);
4410 SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer);
4411 SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer);
4412 SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer);
4413 SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer);
4414 SCTP_OS_TIMER_INIT(&asoc->delayed_event_timer.timer);
4415 SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer);
4417 LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist);
4418 /* now file the port under the hash as well */
4419 if (inp->sctp_tcbhash != NULL) {
4420 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport,
4421 inp->sctp_hashmark)];
4422 LIST_INSERT_HEAD(head, stcb, sctp_tcbhash);
4424 if (initialize_auth_params == SCTP_INITIALIZE_AUTH_PARAMS) {
4425 sctp_initialize_auth_params(inp, stcb);
4427 SCTP_INP_WUNLOCK(inp);
4428 SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", (void *)stcb);
4434 sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
4436 struct sctp_association *asoc;
4440 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4441 if (net == asoc->primary_destination) {
4443 struct sctp_nets *lnet;
4445 lnet = TAILQ_FIRST(&asoc->nets);
4447 * Mobility adaptation Ideally, if deleted destination is
4448 * the primary, it becomes a fast retransmission trigger by
4449 * the subsequent SET PRIMARY. (by micchie)
4451 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
4452 SCTP_MOBILITY_BASE) ||
4453 sctp_is_mobility_feature_on(stcb->sctp_ep,
4454 SCTP_MOBILITY_FASTHANDOFF)) {
4455 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n");
4456 if (asoc->deleted_primary != NULL) {
4457 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n");
4460 asoc->deleted_primary = net;
4461 atomic_add_int(&net->ref_count, 1);
4462 memset(&net->lastsa, 0, sizeof(net->lastsa));
4463 memset(&net->lastsv, 0, sizeof(net->lastsv));
4464 sctp_mobility_feature_on(stcb->sctp_ep,
4465 SCTP_MOBILITY_PRIM_DELETED);
4466 sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED,
4467 stcb->sctp_ep, stcb, NULL);
4470 /* Try to find a confirmed primary */
4471 asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0);
4473 if (net == asoc->last_data_chunk_from) {
4475 asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets);
4477 if (net == asoc->last_control_chunk_from) {
4479 asoc->last_control_chunk_from = NULL;
4481 if (net == stcb->asoc.alternate) {
4482 sctp_free_remote_addr(stcb->asoc.alternate);
4483 stcb->asoc.alternate = NULL;
4485 sctp_free_remote_addr(net);
4489 * remove a remote endpoint address from an association, it will fail if the
4490 * address does not exist.
4493 sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
4496 * Here we need to remove a remote address. This is quite simple, we
4497 * first find it in the list of address for the association
4498 * (tasoc->asoc.nets) and then if it is there, we do a LIST_REMOVE
4499 * on that item. Note we do not allow it to be removed if there are
4500 * no other addresses.
4502 struct sctp_association *asoc;
4503 struct sctp_nets *net, *nnet;
4507 /* locate the address */
4508 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
4509 if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) {
4512 if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr,
4514 /* we found the guy */
4515 if (asoc->numnets < 2) {
4516 /* Must have at LEAST two remote addresses */
4519 sctp_remove_net(stcb, net);
4529 sctp_delete_from_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4531 struct sctpvtaghead *chain;
4532 struct sctp_tagblock *twait_block;
4536 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4537 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4538 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4539 if ((twait_block->vtag_block[i].v_tag == tag) &&
4540 (twait_block->vtag_block[i].lport == lport) &&
4541 (twait_block->vtag_block[i].rport == rport)) {
4542 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4543 twait_block->vtag_block[i].v_tag = 0;
4544 twait_block->vtag_block[i].lport = 0;
4545 twait_block->vtag_block[i].rport = 0;
4556 sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4558 struct sctpvtaghead *chain;
4559 struct sctp_tagblock *twait_block;
4563 SCTP_INP_INFO_WLOCK();
4564 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4565 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4566 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4567 if ((twait_block->vtag_block[i].v_tag == tag) &&
4568 (twait_block->vtag_block[i].lport == lport) &&
4569 (twait_block->vtag_block[i].rport == rport)) {
4577 SCTP_INP_INFO_WUNLOCK();
4583 sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport)
4585 struct sctpvtaghead *chain;
4586 struct sctp_tagblock *twait_block;
4594 (void)SCTP_GETTIME_TIMEVAL(&now);
4595 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4597 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4598 /* Block(s) present, lets find space, and expire on the fly */
4599 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4600 if ((twait_block->vtag_block[i].v_tag == 0) &&
4602 twait_block->vtag_block[i].tv_sec_at_expire =
4604 twait_block->vtag_block[i].v_tag = tag;
4605 twait_block->vtag_block[i].lport = lport;
4606 twait_block->vtag_block[i].rport = rport;
4608 } else if ((twait_block->vtag_block[i].v_tag) &&
4609 ((long)twait_block->vtag_block[i].tv_sec_at_expire < now.tv_sec)) {
4610 /* Audit expires this guy */
4611 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4612 twait_block->vtag_block[i].v_tag = 0;
4613 twait_block->vtag_block[i].lport = 0;
4614 twait_block->vtag_block[i].rport = 0;
4616 /* Reuse it for my new tag */
4617 twait_block->vtag_block[i].tv_sec_at_expire = now.tv_sec + time;
4618 twait_block->vtag_block[i].v_tag = tag;
4619 twait_block->vtag_block[i].lport = lport;
4620 twait_block->vtag_block[i].rport = rport;
4627 * We only do up to the block where we can place our
4633 /* Need to add a new block to chain */
4635 SCTP_MALLOC(twait_block, struct sctp_tagblock *,
4636 sizeof(struct sctp_tagblock), SCTP_M_TIMW);
4637 if (twait_block == NULL) {
4639 panic("Can not alloc tagblock");
4643 memset(twait_block, 0, sizeof(struct sctp_tagblock));
4644 LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock);
4645 twait_block->vtag_block[0].tv_sec_at_expire = now.tv_sec + time;
4646 twait_block->vtag_block[0].v_tag = tag;
4647 twait_block->vtag_block[0].lport = lport;
4648 twait_block->vtag_block[0].rport = rport;
4653 sctp_clean_up_stream(struct sctp_tcb *stcb, struct sctp_readhead *rh)
4655 struct sctp_tmit_chunk *chk, *nchk;
4656 struct sctp_queued_to_read *control, *ncontrol;
4658 TAILQ_FOREACH_SAFE(control, rh, next_instrm, ncontrol) {
4659 TAILQ_REMOVE(rh, control, next_instrm);
4660 control->on_strm_q = 0;
4661 if (control->on_read_q == 0) {
4662 sctp_free_remote_addr(control->whoFrom);
4663 if (control->data) {
4664 sctp_m_freem(control->data);
4665 control->data = NULL;
4668 /* Reassembly free? */
4669 TAILQ_FOREACH_SAFE(chk, &control->reasm, sctp_next, nchk) {
4670 TAILQ_REMOVE(&control->reasm, chk, sctp_next);
4672 sctp_m_freem(chk->data);
4675 if (chk->holds_key_ref)
4676 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4677 sctp_free_remote_addr(chk->whoTo);
4678 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4679 SCTP_DECR_CHK_COUNT();
4680 /* sa_ignore FREED_MEMORY */
4683 * We don't free the address here since all the net's were
4686 if (control->on_read_q == 0) {
4687 sctp_free_a_readq(stcb, control);
4694 * Free the association after un-hashing the remote port. This
4695 * function ALWAYS returns holding NO LOCK on the stcb. It DOES
4696 * expect that the input to this function IS a locked TCB.
4697 * It will return 0, if it did NOT destroy the association (instead
4698 * it unlocks it. It will return NON-zero if it either destroyed the
4699 * association OR the association is already destroyed.
4702 sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
4705 struct sctp_association *asoc;
4706 struct sctp_nets *net, *nnet;
4707 struct sctp_laddr *laddr, *naddr;
4708 struct sctp_tmit_chunk *chk, *nchk;
4709 struct sctp_asconf_addr *aparam, *naparam;
4710 struct sctp_asconf_ack *aack, *naack;
4711 struct sctp_stream_reset_list *strrst, *nstrrst;
4712 struct sctp_queued_to_read *sq, *nsq;
4713 struct sctp_stream_queue_pending *sp, *nsp;
4714 sctp_sharedkey_t *shared_key, *nshared_key;
4717 /* first, lets purge the entry from the hash table. */
4719 #ifdef SCTP_LOG_CLOSING
4720 sctp_log_closing(inp, stcb, 6);
4722 if (stcb->asoc.state == 0) {
4723 #ifdef SCTP_LOG_CLOSING
4724 sctp_log_closing(inp, NULL, 7);
4726 /* there is no asoc, really TSNH :-0 */
4729 if (stcb->asoc.alternate) {
4730 sctp_free_remote_addr(stcb->asoc.alternate);
4731 stcb->asoc.alternate = NULL;
4734 if (stcb->freed_from_where == 0) {
4735 /* Only record the first place free happened from */
4736 stcb->freed_from_where = from_location;
4741 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4742 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4743 /* nothing around */
4746 so = inp->sctp_socket;
4749 * We used timer based freeing if a reader or writer is in the way.
4750 * So we first check if we are actually being called from a timer,
4751 * if so we abort early if a reader or writer is still in the way.
4753 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
4754 (from_inpcbfree == SCTP_NORMAL_PROC)) {
4756 * is it the timer driving us? if so are the reader/writers
4759 if (stcb->asoc.refcnt) {
4760 /* nope, reader or writer in the way */
4761 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4762 /* no asoc destroyed */
4763 SCTP_TCB_UNLOCK(stcb);
4764 #ifdef SCTP_LOG_CLOSING
4765 sctp_log_closing(inp, stcb, 8);
4770 /* now clean up any other timers */
4771 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4772 asoc->dack_timer.self = NULL;
4773 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4775 * For stream reset we don't blast this unless
4776 * it is a str-reset timer, it might be the
4777 * free-asoc timer which we DON'T want to
4780 if (asoc->strreset_timer.type == SCTP_TIMER_TYPE_STRRESET)
4781 asoc->strreset_timer.self = NULL;
4782 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4783 asoc->asconf_timer.self = NULL;
4784 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4785 asoc->autoclose_timer.self = NULL;
4786 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4787 asoc->shut_guard_timer.self = NULL;
4788 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4789 asoc->delayed_event_timer.self = NULL;
4790 /* Mobility adaptation */
4791 (void)SCTP_OS_TIMER_STOP(&asoc->delete_prim_timer.timer);
4792 asoc->delete_prim_timer.self = NULL;
4793 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4794 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4795 net->rxt_timer.self = NULL;
4796 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4797 net->pmtu_timer.self = NULL;
4798 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4799 net->hb_timer.self = NULL;
4801 /* Now the read queue needs to be cleaned up (only once) */
4802 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) {
4803 SCTP_ADD_SUBSTATE(stcb, SCTP_STATE_ABOUT_TO_BE_FREED);
4804 SCTP_INP_READ_LOCK(inp);
4805 TAILQ_FOREACH(sq, &inp->read_queue, next) {
4806 if (sq->stcb == stcb) {
4807 sq->do_not_ref_stcb = 1;
4808 sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
4810 * If there is no end, there never will be
4813 if (sq->end_added == 0) {
4814 /* Held for PD-API clear that. */
4815 sq->pdapi_aborted = 1;
4816 sq->held_length = 0;
4817 if (sctp_stcb_is_feature_on(inp, stcb, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) {
4819 * Need to add a PD-API
4820 * aborted indication.
4821 * Setting the control_pdapi
4822 * assures that it will be
4823 * added right after this
4828 stcb->asoc.control_pdapi = sq;
4829 strseq = (sq->sinfo_stream << 16) | (sq->mid & 0x0000ffff);
4830 sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION,
4832 SCTP_PARTIAL_DELIVERY_ABORTED,
4835 stcb->asoc.control_pdapi = NULL;
4838 /* Add an end to wake them */
4842 SCTP_INP_READ_UNLOCK(inp);
4843 if (stcb->block_entry) {
4844 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET);
4845 stcb->block_entry->error = ECONNRESET;
4846 stcb->block_entry = NULL;
4849 if ((stcb->asoc.refcnt) || (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE)) {
4851 * Someone holds a reference OR the socket is unaccepted
4854 if ((stcb->asoc.refcnt) ||
4855 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4856 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4857 SCTP_CLEAR_SUBSTATE(stcb, SCTP_STATE_IN_ACCEPT_QUEUE);
4858 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4860 SCTP_TCB_UNLOCK(stcb);
4861 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4862 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4863 /* nothing around */
4866 /* Wake any reader/writers */
4867 sctp_sorwakeup(inp, so);
4868 sctp_sowwakeup(inp, so);
4871 #ifdef SCTP_LOG_CLOSING
4872 sctp_log_closing(inp, stcb, 9);
4874 /* no asoc destroyed */
4877 #ifdef SCTP_LOG_CLOSING
4878 sctp_log_closing(inp, stcb, 10);
4881 * When I reach here, no others want to kill the assoc yet.. and I
4882 * own the lock. Now its possible an abort comes in when I do the
4883 * lock exchange below to grab all the locks to do the final take
4884 * out. to prevent this we increment the count, which will start a
4885 * timer and blow out above thus assuring us that we hold exclusive
4886 * killing of the asoc. Note that after getting back the TCB lock we
4887 * will go ahead and increment the counter back up and stop any
4888 * timer a passing stranger may have started :-S
4890 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4891 atomic_add_int(&stcb->asoc.refcnt, 1);
4893 SCTP_TCB_UNLOCK(stcb);
4894 SCTP_INP_INFO_WLOCK();
4895 SCTP_INP_WLOCK(inp);
4896 SCTP_TCB_LOCK(stcb);
4898 /* Double check the GONE flag */
4899 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4900 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4901 /* nothing around */
4904 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
4905 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4907 * For TCP type we need special handling when we are
4908 * connected. We also include the peel'ed off ones to.
4910 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4911 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED;
4912 inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED;
4914 SOCKBUF_LOCK(&so->so_rcv);
4915 so->so_state &= ~(SS_ISCONNECTING |
4916 SS_ISDISCONNECTING |
4919 so->so_state |= SS_ISDISCONNECTED;
4920 socantrcvmore_locked(so);
4922 sctp_sowwakeup(inp, so);
4923 sctp_sorwakeup(inp, so);
4930 * Make it invalid too, that way if its about to run it will abort
4933 /* re-increment the lock */
4934 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4935 atomic_add_int(&stcb->asoc.refcnt, -1);
4937 if (stcb->asoc.refcnt) {
4938 SCTP_CLEAR_SUBSTATE(stcb, SCTP_STATE_IN_ACCEPT_QUEUE);
4939 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4940 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4941 SCTP_INP_INFO_WUNLOCK();
4942 SCTP_INP_WUNLOCK(inp);
4944 SCTP_TCB_UNLOCK(stcb);
4948 if (inp->sctp_tcbhash) {
4949 LIST_REMOVE(stcb, sctp_tcbhash);
4951 if (stcb->asoc.in_asocid_hash) {
4952 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4954 /* Now lets remove it from the list of ALL associations in the EP */
4955 LIST_REMOVE(stcb, sctp_tcblist);
4956 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4957 SCTP_INP_INCR_REF(inp);
4958 SCTP_INP_WUNLOCK(inp);
4960 /* pull from vtag hash */
4961 LIST_REMOVE(stcb, sctp_asocs);
4962 sctp_add_vtag_to_timewait(asoc->my_vtag, SCTP_BASE_SYSCTL(sctp_vtag_time_wait),
4963 inp->sctp_lport, stcb->rport);
4966 * Now restop the timers to be sure this is paranoia at is finest!
4968 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4969 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4970 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4971 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4972 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4973 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4974 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4975 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4976 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4977 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4978 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4981 asoc->strreset_timer.type = SCTP_TIMER_TYPE_NONE;
4983 * The chunk lists and such SHOULD be empty but we check them just
4986 /* anything on the wheel needs to be removed */
4987 SCTP_TCB_SEND_LOCK(stcb);
4988 for (i = 0; i < asoc->streamoutcnt; i++) {
4989 struct sctp_stream_out *outs;
4991 outs = &asoc->strmout[i];
4992 /* now clean up any chunks here */
4993 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
4994 atomic_subtract_int(&asoc->stream_queue_cnt, 1);
4995 TAILQ_REMOVE(&outs->outqueue, sp, next);
4996 stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, outs, sp, 1);
4997 sctp_free_spbufspace(stcb, asoc, sp);
5000 /* Still an open socket - report */
5001 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
5002 0, (void *)sp, SCTP_SO_LOCKED);
5005 sctp_m_freem(sp->data);
5007 sp->tail_mbuf = NULL;
5012 sctp_free_remote_addr(sp->net);
5015 sctp_free_a_strmoq(stcb, sp, SCTP_SO_LOCKED);
5018 SCTP_TCB_SEND_UNLOCK(stcb);
5019 /* sa_ignore FREED_MEMORY */
5020 TAILQ_FOREACH_SAFE(strrst, &asoc->resetHead, next_resp, nstrrst) {
5021 TAILQ_REMOVE(&asoc->resetHead, strrst, next_resp);
5022 SCTP_FREE(strrst, SCTP_M_STRESET);
5024 TAILQ_FOREACH_SAFE(sq, &asoc->pending_reply_queue, next, nsq) {
5025 TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
5027 sctp_m_freem(sq->data);
5030 sctp_free_remote_addr(sq->whoFrom);
5033 /* Free the ctl entry */
5034 sctp_free_a_readq(stcb, sq);
5035 /* sa_ignore FREED_MEMORY */
5037 TAILQ_FOREACH_SAFE(chk, &asoc->free_chunks, sctp_next, nchk) {
5038 TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next);
5040 sctp_m_freem(chk->data);
5043 if (chk->holds_key_ref)
5044 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5045 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5046 SCTP_DECR_CHK_COUNT();
5047 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1);
5048 asoc->free_chunk_cnt--;
5049 /* sa_ignore FREED_MEMORY */
5051 /* pending send queue SHOULD be empty */
5052 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
5053 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
5054 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
5057 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
5060 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
5063 /* Still a socket? */
5064 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
5065 0, chk, SCTP_SO_LOCKED);
5068 sctp_m_freem(chk->data);
5072 if (chk->holds_key_ref)
5073 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5075 sctp_free_remote_addr(chk->whoTo);
5078 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5079 SCTP_DECR_CHK_COUNT();
5080 /* sa_ignore FREED_MEMORY */
5082 /* sent queue SHOULD be empty */
5083 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
5084 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
5085 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
5086 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
5089 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
5093 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
5096 /* Still a socket? */
5097 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
5098 0, chk, SCTP_SO_LOCKED);
5101 sctp_m_freem(chk->data);
5105 if (chk->holds_key_ref)
5106 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5107 sctp_free_remote_addr(chk->whoTo);
5108 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5109 SCTP_DECR_CHK_COUNT();
5110 /* sa_ignore FREED_MEMORY */
5113 for (i = 0; i < stcb->asoc.streamoutcnt; i++) {
5114 if (stcb->asoc.strmout[i].chunks_on_queues > 0) {
5115 panic("%u chunks left for stream %u.", stcb->asoc.strmout[i].chunks_on_queues, i);
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 if (asoc->mapping_array) {
5148 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
5149 asoc->mapping_array = NULL;
5151 if (asoc->nr_mapping_array) {
5152 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
5153 asoc->nr_mapping_array = NULL;
5155 /* the stream outs */
5156 if (asoc->strmout) {
5157 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
5158 asoc->strmout = NULL;
5160 asoc->strm_realoutsize = asoc->streamoutcnt = 0;
5162 for (i = 0; i < asoc->streamincnt; i++) {
5163 sctp_clean_up_stream(stcb, &asoc->strmin[i].inqueue);
5164 sctp_clean_up_stream(stcb, &asoc->strmin[i].uno_inqueue);
5166 SCTP_FREE(asoc->strmin, SCTP_M_STRMI);
5167 asoc->strmin = NULL;
5169 asoc->streamincnt = 0;
5170 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
5172 if (SCTP_BASE_INFO(ipi_count_raddr) == 0) {
5173 panic("no net's left alloc'ed, or list points to itself");
5176 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
5177 sctp_free_remote_addr(net);
5179 LIST_FOREACH_SAFE(laddr, &asoc->sctp_restricted_addrs, sctp_nxt_addr, naddr) {
5180 /* sa_ignore FREED_MEMORY */
5181 sctp_remove_laddr(laddr);
5184 /* pending asconf (address) parameters */
5185 TAILQ_FOREACH_SAFE(aparam, &asoc->asconf_queue, next, naparam) {
5186 /* sa_ignore FREED_MEMORY */
5187 TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
5188 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
5190 TAILQ_FOREACH_SAFE(aack, &asoc->asconf_ack_sent, next, naack) {
5191 /* sa_ignore FREED_MEMORY */
5192 TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
5193 if (aack->data != NULL) {
5194 sctp_m_freem(aack->data);
5196 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
5198 /* clean up auth stuff */
5199 if (asoc->local_hmacs)
5200 sctp_free_hmaclist(asoc->local_hmacs);
5201 if (asoc->peer_hmacs)
5202 sctp_free_hmaclist(asoc->peer_hmacs);
5204 if (asoc->local_auth_chunks)
5205 sctp_free_chunklist(asoc->local_auth_chunks);
5206 if (asoc->peer_auth_chunks)
5207 sctp_free_chunklist(asoc->peer_auth_chunks);
5209 sctp_free_authinfo(&asoc->authinfo);
5211 LIST_FOREACH_SAFE(shared_key, &asoc->shared_keys, next, nshared_key) {
5212 LIST_REMOVE(shared_key, next);
5213 sctp_free_sharedkey(shared_key);
5214 /* sa_ignore FREED_MEMORY */
5217 /* Insert new items here :> */
5219 /* Get rid of LOCK */
5220 SCTP_TCB_UNLOCK(stcb);
5221 SCTP_TCB_LOCK_DESTROY(stcb);
5222 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
5223 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5224 SCTP_INP_INFO_WUNLOCK();
5225 SCTP_INP_RLOCK(inp);
5227 #ifdef SCTP_TRACK_FREED_ASOCS
5228 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5229 /* now clean up the tasoc itself */
5230 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5231 SCTP_DECR_ASOC_COUNT();
5233 LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist);
5236 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5237 SCTP_DECR_ASOC_COUNT();
5239 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5240 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5242 * If its NOT the inp_free calling us AND sctp_close
5243 * as been called, we call back...
5245 SCTP_INP_RUNLOCK(inp);
5247 * This will start the kill timer (if we are the
5248 * last one) since we hold an increment yet. But
5249 * this is the only safe way to do this since
5250 * otherwise if the socket closes at the same time
5251 * we are here we might collide in the cleanup.
5253 sctp_inpcb_free(inp,
5254 SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
5255 SCTP_CALLED_DIRECTLY_NOCMPSET);
5256 SCTP_INP_DECR_REF(inp);
5259 /* The socket is still open. */
5260 SCTP_INP_DECR_REF(inp);
5263 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5264 SCTP_INP_RUNLOCK(inp);
5267 /* destroyed the asoc */
5268 #ifdef SCTP_LOG_CLOSING
5269 sctp_log_closing(inp, NULL, 11);
5277 * determine if a destination is "reachable" based upon the addresses bound
5278 * to the current endpoint (e.g. only v4 or v6 currently bound)
5281 * FIX: if we allow assoc-level bindx(), then this needs to be fixed to use
5282 * assoc level v4/v6 flags, as the assoc *may* not have the same address
5283 * types bound as its endpoint
5286 sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
5288 struct sctp_inpcb *inp;
5292 * No locks here, the TCB, in all cases is already locked and an
5293 * assoc is up. There is either a INP lock by the caller applied (in
5294 * asconf case when deleting an address) or NOT in the HB case,
5295 * however if HB then the INP increment is up and the INP will not
5296 * be removed (on top of the fact that we have a TCB lock). So we
5297 * only want to read the sctp_flags, which is either bound-all or
5298 * not.. no protection needed since once an assoc is up you can't be
5299 * changing your binding.
5301 inp = stcb->sctp_ep;
5302 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5303 /* if bound all, destination is not restricted */
5305 * RRS: Question during lock work: Is this correct? If you
5306 * are bound-all you still might need to obey the V4--V6
5307 * flags??? IMO this bound-all stuff needs to be removed!
5311 /* NOTE: all "scope" checks are done when local addresses are added */
5312 switch (destaddr->sa_family) {
5315 answer = inp->ip_inp.inp.inp_vflag & INP_IPV6;
5320 answer = inp->ip_inp.inp.inp_vflag & INP_IPV4;
5324 /* invalid family, so it's unreachable */
5332 * update the inp_vflags on an endpoint
5335 sctp_update_ep_vflag(struct sctp_inpcb *inp)
5337 struct sctp_laddr *laddr;
5339 /* first clear the flag */
5340 inp->ip_inp.inp.inp_vflag = 0;
5341 /* set the flag based on addresses on the ep list */
5342 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5343 if (laddr->ifa == NULL) {
5344 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
5349 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
5352 switch (laddr->ifa->address.sa.sa_family) {
5355 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5360 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5370 * Add the address to the endpoint local address list There is nothing to be
5371 * done if we are bound to all addresses
5374 sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
5376 struct sctp_laddr *laddr;
5377 struct sctp_tcb *stcb;
5382 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5383 /* You are already bound to all. You have it already */
5387 if (ifa->address.sa.sa_family == AF_INET6) {
5388 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5389 /* Can't bind a non-useable addr. */
5394 /* first, is it already present? */
5395 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5396 if (laddr->ifa == ifa) {
5403 /* Not in the ep list */
5404 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action);
5408 /* update inp_vflag flags */
5409 switch (ifa->address.sa.sa_family) {
5412 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5417 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5423 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5424 sctp_add_local_addr_restricted(stcb, ifa);
5432 * select a new (hopefully reachable) destination net (should only be used
5433 * when we deleted an ep addr that is the only usable source address to reach
5434 * the destination net)
5437 sctp_select_primary_destination(struct sctp_tcb *stcb)
5439 struct sctp_nets *net;
5441 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5442 /* for now, we'll just pick the first reachable one we find */
5443 if (net->dest_state & SCTP_ADDR_UNCONFIRMED)
5445 if (sctp_destination_is_reachable(stcb,
5446 (struct sockaddr *)&net->ro._l_addr)) {
5447 /* found a reachable destination */
5448 stcb->asoc.primary_destination = net;
5451 /* I can't there from here! ...we're gonna die shortly... */
5456 * Delete the address from the endpoint local address list. There is nothing
5457 * to be done if we are bound to all addresses
5460 sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa)
5462 struct sctp_laddr *laddr;
5466 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5467 /* You are already bound to all. You have it already */
5470 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5471 if (laddr->ifa == ifa) {
5476 if (fnd && (inp->laddr_count < 2)) {
5477 /* can't delete unless there are at LEAST 2 addresses */
5482 * clean up any use of this address go through our
5483 * associations and clear any last_used_address that match
5484 * this one for each assoc, see if a new primary_destination
5487 struct sctp_tcb *stcb;
5489 /* clean up "next_addr_touse" */
5490 if (inp->next_addr_touse == laddr)
5491 /* delete this address */
5492 inp->next_addr_touse = NULL;
5494 /* clean up "last_used_address" */
5495 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5496 struct sctp_nets *net;
5498 SCTP_TCB_LOCK(stcb);
5499 if (stcb->asoc.last_used_address == laddr)
5500 /* delete this address */
5501 stcb->asoc.last_used_address = NULL;
5503 * Now spin through all the nets and purge any ref
5506 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5507 if (net->ro._s_addr == laddr->ifa) {
5508 /* Yep, purge src address selected */
5511 /* delete this address if cached */
5515 net->ro.ro_rt = NULL;
5517 sctp_free_ifa(net->ro._s_addr);
5518 net->ro._s_addr = NULL;
5519 net->src_addr_selected = 0;
5522 SCTP_TCB_UNLOCK(stcb);
5523 } /* for each tcb */
5524 /* remove it from the ep list */
5525 sctp_remove_laddr(laddr);
5527 /* update inp_vflag flags */
5528 sctp_update_ep_vflag(inp);
5534 * Add the address to the TCB local address restricted list.
5535 * This is a "pending" address list (eg. addresses waiting for an
5536 * ASCONF-ACK response) and cannot be used as a valid source address.
5539 sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5541 struct sctp_laddr *laddr;
5542 struct sctpladdr *list;
5545 * Assumes TCB is locked.. and possibly the INP. May need to
5546 * confirm/fix that if we need it and is not the case.
5548 list = &stcb->asoc.sctp_restricted_addrs;
5551 if (ifa->address.sa.sa_family == AF_INET6) {
5552 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5553 /* Can't bind a non-existent addr. */
5558 /* does the address already exist? */
5559 LIST_FOREACH(laddr, list, sctp_nxt_addr) {
5560 if (laddr->ifa == ifa) {
5565 /* add to the list */
5566 (void)sctp_insert_laddr(list, ifa, 0);
5571 * Remove a local address from the TCB local address restricted list
5574 sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5576 struct sctp_inpcb *inp;
5577 struct sctp_laddr *laddr;
5580 * This is called by asconf work. It is assumed that a) The TCB is
5581 * locked and b) The INP is locked. This is true in as much as I can
5582 * trace through the entry asconf code where I did these locks.
5583 * Again, the ASCONF code is a bit different in that it does lock
5584 * the INP during its work often times. This must be since we don't
5585 * want other proc's looking up things while what they are looking
5586 * up is changing :-D
5589 inp = stcb->sctp_ep;
5590 /* if subset bound and don't allow ASCONF's, can't delete last */
5591 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
5592 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
5593 if (stcb->sctp_ep->laddr_count < 2) {
5594 /* can't delete last address */
5598 LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
5599 /* remove the address if it exists */
5600 if (laddr->ifa == NULL)
5602 if (laddr->ifa == ifa) {
5603 sctp_remove_laddr(laddr);
5608 /* address not found! */
5613 * Temporarily remove for __APPLE__ until we use the Tiger equivalents
5616 static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;
5617 static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR;
5621 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5622 struct sctp_mcore_ctrl *sctp_mcore_workers = NULL;
5623 int *sctp_cpuarry = NULL;
5625 sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use)
5627 /* Queue a packet to a processor for the specified core */
5628 struct sctp_mcore_queue *qent;
5629 struct sctp_mcore_ctrl *wkq;
5632 if (sctp_mcore_workers == NULL) {
5633 /* Something went way bad during setup */
5634 sctp_input_with_port(m, off, 0);
5637 SCTP_MALLOC(qent, struct sctp_mcore_queue *,
5638 (sizeof(struct sctp_mcore_queue)),
5641 /* This is trouble */
5642 sctp_input_with_port(m, off, 0);
5649 wkq = &sctp_mcore_workers[cpu_to_use];
5650 SCTP_MCORE_QLOCK(wkq);
5652 TAILQ_INSERT_TAIL(&wkq->que, qent, next);
5653 if (wkq->running == 0) {
5656 SCTP_MCORE_QUNLOCK(wkq);
5658 wakeup(&wkq->running);
5663 sctp_mcore_thread(void *arg)
5666 struct sctp_mcore_ctrl *wkq;
5667 struct sctp_mcore_queue *qent;
5669 wkq = (struct sctp_mcore_ctrl *)arg;
5673 /* Wait for first tickle */
5674 SCTP_MCORE_LOCK(wkq);
5676 msleep(&wkq->running,
5678 0, "wait for pkt", 0);
5679 SCTP_MCORE_UNLOCK(wkq);
5681 /* Bind to our cpu */
5682 thread_lock(curthread);
5683 sched_bind(curthread, wkq->cpuid);
5684 thread_unlock(curthread);
5686 /* Now lets start working */
5687 SCTP_MCORE_LOCK(wkq);
5688 /* Now grab lock and go */
5690 SCTP_MCORE_QLOCK(wkq);
5693 qent = TAILQ_FIRST(&wkq->que);
5695 TAILQ_REMOVE(&wkq->que, qent, next);
5696 SCTP_MCORE_QUNLOCK(wkq);
5697 CURVNET_SET(qent->vn);
5701 SCTP_FREE(qent, SCTP_M_MCORE);
5703 sctp_input_with_port(m, off, 0);
5705 SCTP_PRINTF("V6 not yet supported\n");
5709 SCTP_MCORE_QLOCK(wkq);
5712 if (!TAILQ_EMPTY(&wkq->que)) {
5715 SCTP_MCORE_QUNLOCK(wkq);
5716 msleep(&wkq->running,
5718 0, "wait for pkt", 0);
5723 sctp_startup_mcore_threads(void)
5730 if (sctp_mcore_workers != NULL) {
5732 * Already been here in some previous vnet?
5736 SCTP_MALLOC(sctp_mcore_workers, struct sctp_mcore_ctrl *,
5737 ((mp_maxid + 1) * sizeof(struct sctp_mcore_ctrl)),
5739 if (sctp_mcore_workers == NULL) {
5743 memset(sctp_mcore_workers, 0, ((mp_maxid + 1) *
5744 sizeof(struct sctp_mcore_ctrl)));
5745 /* Init the structures */
5746 for (i = 0; i <= mp_maxid; i++) {
5747 TAILQ_INIT(&sctp_mcore_workers[i].que);
5748 SCTP_MCORE_LOCK_INIT(&sctp_mcore_workers[i]);
5749 SCTP_MCORE_QLOCK_INIT(&sctp_mcore_workers[i]);
5750 sctp_mcore_workers[i].cpuid = i;
5752 if (sctp_cpuarry == NULL) {
5753 SCTP_MALLOC(sctp_cpuarry, int *,
5754 (mp_ncpus * sizeof(int)),
5758 sctp_cpuarry[i] = cpu;
5763 /* Now start them all */
5765 (void)kproc_create(sctp_mcore_thread,
5766 (void *)&sctp_mcore_workers[cpu],
5767 &sctp_mcore_workers[cpu].thread_proc,
5780 * SCTP initialization for the PCB structures should be called by
5781 * the sctp_init() function.
5786 if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) {
5787 /* error I was called twice */
5790 SCTP_BASE_VAR(sctp_pcb_initialized) = 1;
5792 #if defined(SCTP_LOCAL_TRACE_BUF)
5793 memset(&SCTP_BASE_SYSCTL(sctp_log), 0, sizeof(struct sctp_log));
5795 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5796 SCTP_MALLOC(SCTP_BASE_STATS, struct sctpstat *,
5797 ((mp_maxid + 1) * sizeof(struct sctpstat)),
5800 (void)SCTP_GETTIME_TIMEVAL(&tv);
5801 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5802 memset(SCTP_BASE_STATS, 0, sizeof(struct sctpstat) * (mp_maxid + 1));
5803 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t)tv.tv_sec;
5804 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t)tv.tv_usec;
5806 memset(&SCTP_BASE_STATS, 0, sizeof(struct sctpstat));
5807 SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t)tv.tv_sec;
5808 SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t)tv.tv_usec;
5810 /* init the empty list of (All) Endpoints */
5811 LIST_INIT(&SCTP_BASE_INFO(listhead));
5814 /* init the hash table of endpoints */
5815 TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize));
5816 TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize));
5817 TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale));
5818 SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31),
5819 &SCTP_BASE_INFO(hashasocmark));
5820 SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5821 &SCTP_BASE_INFO(hashmark));
5822 SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5823 &SCTP_BASE_INFO(hashtcpmark));
5824 SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize);
5827 SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH,
5828 &SCTP_BASE_INFO(hashvrfmark));
5830 SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE,
5831 &SCTP_BASE_INFO(vrf_ifn_hashmark));
5832 /* init the zones */
5834 * FIX ME: Should check for NULL returns, but if it does fail we are
5835 * doomed to panic anyways... add later maybe.
5837 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep",
5838 sizeof(struct sctp_inpcb), maxsockets);
5840 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc",
5841 sizeof(struct sctp_tcb), sctp_max_number_of_assoc);
5843 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr",
5844 sizeof(struct sctp_laddr),
5845 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5847 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr",
5848 sizeof(struct sctp_nets),
5849 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5851 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk",
5852 sizeof(struct sctp_tmit_chunk),
5853 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5855 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq",
5856 sizeof(struct sctp_queued_to_read),
5857 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5859 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out",
5860 sizeof(struct sctp_stream_queue_pending),
5861 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5863 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf",
5864 sizeof(struct sctp_asconf),
5865 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5867 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack",
5868 sizeof(struct sctp_asconf_ack),
5869 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5872 /* Master Lock INIT for info structure */
5873 SCTP_INP_INFO_LOCK_INIT();
5874 SCTP_STATLOG_INIT_LOCK();
5876 SCTP_IPI_COUNT_INIT();
5877 SCTP_IPI_ADDR_INIT();
5878 #ifdef SCTP_PACKET_LOGGING
5879 SCTP_IP_PKTLOG_INIT();
5881 LIST_INIT(&SCTP_BASE_INFO(addr_wq));
5883 SCTP_WQ_ADDR_INIT();
5884 /* not sure if we need all the counts */
5885 SCTP_BASE_INFO(ipi_count_ep) = 0;
5886 /* assoc/tcb zone info */
5887 SCTP_BASE_INFO(ipi_count_asoc) = 0;
5888 /* local addrlist zone info */
5889 SCTP_BASE_INFO(ipi_count_laddr) = 0;
5890 /* remote addrlist zone info */
5891 SCTP_BASE_INFO(ipi_count_raddr) = 0;
5893 SCTP_BASE_INFO(ipi_count_chunk) = 0;
5895 /* socket queue zone info */
5896 SCTP_BASE_INFO(ipi_count_readq) = 0;
5898 /* stream out queue cont */
5899 SCTP_BASE_INFO(ipi_count_strmoq) = 0;
5901 SCTP_BASE_INFO(ipi_free_strmoq) = 0;
5902 SCTP_BASE_INFO(ipi_free_chunks) = 0;
5904 SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer));
5906 /* Init the TIMEWAIT list */
5907 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5908 LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]);
5910 sctp_startup_iterator();
5912 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5913 sctp_startup_mcore_threads();
5917 * INIT the default VRF which for BSD is the only one, other O/S's
5918 * may have more. But initially they must start with one and then
5919 * add the VRF's as addresses are added.
5921 sctp_init_vrf_list(SCTP_DEFAULT_VRF);
5925 * Assumes that the SCTP_BASE_INFO() lock is NOT held.
5928 sctp_pcb_finish(void)
5930 struct sctp_vrflist *vrf_bucket;
5931 struct sctp_vrf *vrf, *nvrf;
5932 struct sctp_ifn *ifn, *nifn;
5933 struct sctp_ifa *ifa, *nifa;
5934 struct sctpvtaghead *chain;
5935 struct sctp_tagblock *twait_block, *prev_twait_block;
5936 struct sctp_laddr *wi, *nwi;
5938 struct sctp_iterator *it, *nit;
5940 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
5941 SCTP_PRINTF("%s: race condition on teardown.\n", __func__);
5944 SCTP_BASE_VAR(sctp_pcb_initialized) = 0;
5946 * In FreeBSD the iterator thread never exits but we do clean up.
5947 * The only way FreeBSD reaches here is if we have VRF's but we
5948 * still add the ifdef to make it compile on old versions.
5951 SCTP_IPI_ITERATOR_WQ_LOCK();
5953 * sctp_iterator_worker() might be working on an it entry without
5954 * holding the lock. We won't find it on the list either and
5955 * continue and free/destroy it. While holding the lock, spin, to
5956 * avoid the race condition as sctp_iterator_worker() will have to
5957 * wait to re-aquire the lock.
5959 if (sctp_it_ctl.iterator_running != 0 || sctp_it_ctl.cur_it != NULL) {
5960 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5961 SCTP_PRINTF("%s: Iterator running while we held the lock. Retry. "
5962 "cur_it=%p\n", __func__, sctp_it_ctl.cur_it);
5966 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
5967 if (it->vn != curvnet) {
5970 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
5971 if (it->function_atend != NULL) {
5972 (*it->function_atend) (it->pointer, it->val);
5974 SCTP_FREE(it, SCTP_M_ITER);
5976 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5977 SCTP_ITERATOR_LOCK();
5978 if ((sctp_it_ctl.cur_it) &&
5979 (sctp_it_ctl.cur_it->vn == curvnet)) {
5980 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
5982 SCTP_ITERATOR_UNLOCK();
5983 SCTP_OS_TIMER_STOP_DRAIN(&SCTP_BASE_INFO(addr_wq_timer.timer));
5984 SCTP_WQ_ADDR_LOCK();
5985 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
5986 LIST_REMOVE(wi, sctp_nxt_addr);
5987 SCTP_DECR_LADDR_COUNT();
5988 if (wi->action == SCTP_DEL_IP_ADDRESS) {
5989 SCTP_FREE(wi->ifa, SCTP_M_IFA);
5991 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi);
5993 SCTP_WQ_ADDR_UNLOCK();
5996 * free the vrf/ifn/ifa lists and hashes (be sure address monitor is
5999 vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))];
6000 LIST_FOREACH_SAFE(vrf, vrf_bucket, next_vrf, nvrf) {
6001 LIST_FOREACH_SAFE(ifn, &vrf->ifnlist, next_ifn, nifn) {
6002 LIST_FOREACH_SAFE(ifa, &ifn->ifalist, next_ifa, nifa) {
6004 LIST_REMOVE(ifa, next_bucket);
6005 LIST_REMOVE(ifa, next_ifa);
6006 SCTP_FREE(ifa, SCTP_M_IFA);
6009 LIST_REMOVE(ifn, next_bucket);
6010 LIST_REMOVE(ifn, next_ifn);
6011 SCTP_FREE(ifn, SCTP_M_IFN);
6013 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
6015 LIST_REMOVE(vrf, next_vrf);
6016 SCTP_FREE(vrf, SCTP_M_VRF);
6018 /* free the vrf hashes */
6019 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark));
6020 SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark));
6023 * free the TIMEWAIT list elements malloc'd in the function
6024 * sctp_add_vtag_to_timewait()...
6026 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
6027 chain = &SCTP_BASE_INFO(vtag_timewait)[i];
6028 if (!LIST_EMPTY(chain)) {
6029 prev_twait_block = NULL;
6030 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6031 if (prev_twait_block) {
6032 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
6034 prev_twait_block = twait_block;
6036 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
6040 /* free the locks and mutexes */
6041 #ifdef SCTP_PACKET_LOGGING
6042 SCTP_IP_PKTLOG_DESTROY();
6044 SCTP_IPI_ADDR_DESTROY();
6045 SCTP_STATLOG_DESTROY();
6046 SCTP_INP_INFO_LOCK_DESTROY();
6048 SCTP_WQ_ADDR_DESTROY();
6050 /* Get rid of other stuff too. */
6051 if (SCTP_BASE_INFO(sctp_asochash) != NULL)
6052 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark));
6053 if (SCTP_BASE_INFO(sctp_ephash) != NULL)
6054 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark));
6055 if (SCTP_BASE_INFO(sctp_tcpephash) != NULL)
6056 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark));
6058 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep));
6059 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc));
6060 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr));
6061 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net));
6062 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk));
6063 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq));
6064 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq));
6065 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf));
6066 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack));
6067 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
6068 SCTP_FREE(SCTP_BASE_STATS, SCTP_M_MCORE);
6074 sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m,
6075 int offset, int limit,
6076 struct sockaddr *src, struct sockaddr *dst,
6077 struct sockaddr *altsa, uint16_t port)
6080 * grub through the INIT pulling addresses and loading them to the
6081 * nets structure in the asoc. The from address in the mbuf should
6082 * also be loaded (if it is not already). This routine can be called
6083 * with either INIT or INIT-ACK's as long as the m points to the IP
6084 * packet and the offset points to the beginning of the parameters.
6086 struct sctp_inpcb *inp;
6087 struct sctp_nets *net, *nnet, *net_tmp;
6088 struct sctp_paramhdr *phdr, param_buf;
6089 struct sctp_tcb *stcb_tmp;
6090 uint16_t ptype, plen;
6091 struct sockaddr *sa;
6092 uint8_t random_store[SCTP_PARAM_BUFFER_SIZE];
6093 struct sctp_auth_random *p_random = NULL;
6094 uint16_t random_len = 0;
6095 uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE];
6096 struct sctp_auth_hmac_algo *hmacs = NULL;
6097 uint16_t hmacs_len = 0;
6098 uint8_t saw_asconf = 0;
6099 uint8_t saw_asconf_ack = 0;
6100 uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE];
6101 struct sctp_auth_chunk_list *chunks = NULL;
6102 uint16_t num_chunks = 0;
6103 sctp_key_t *new_key;
6105 int got_random = 0, got_hmacs = 0, got_chklist = 0;
6106 uint8_t peer_supports_ecn;
6107 uint8_t peer_supports_prsctp;
6108 uint8_t peer_supports_auth;
6109 uint8_t peer_supports_asconf;
6110 uint8_t peer_supports_asconf_ack;
6111 uint8_t peer_supports_reconfig;
6112 uint8_t peer_supports_nrsack;
6113 uint8_t peer_supports_pktdrop;
6114 uint8_t peer_supports_idata;
6116 struct sockaddr_in sin;
6119 struct sockaddr_in6 sin6;
6122 /* First get the destination address setup too. */
6124 memset(&sin, 0, sizeof(sin));
6125 sin.sin_family = AF_INET;
6126 sin.sin_len = sizeof(sin);
6127 sin.sin_port = stcb->rport;
6130 memset(&sin6, 0, sizeof(sin6));
6131 sin6.sin6_family = AF_INET6;
6132 sin6.sin6_len = sizeof(struct sockaddr_in6);
6133 sin6.sin6_port = stcb->rport;
6140 peer_supports_idata = 0;
6141 peer_supports_ecn = 0;
6142 peer_supports_prsctp = 0;
6143 peer_supports_auth = 0;
6144 peer_supports_asconf = 0;
6145 peer_supports_reconfig = 0;
6146 peer_supports_nrsack = 0;
6147 peer_supports_pktdrop = 0;
6148 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
6149 /* mark all addresses that we have currently on the list */
6150 net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC;
6152 /* does the source address already exist? if so skip it */
6153 inp = stcb->sctp_ep;
6154 atomic_add_int(&stcb->asoc.refcnt, 1);
6155 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, dst, stcb);
6156 atomic_add_int(&stcb->asoc.refcnt, -1);
6158 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) {
6159 /* we must add the source address */
6160 /* no scope set here since we have a tcb already. */
6161 switch (sa->sa_family) {
6164 if (stcb->asoc.scope.ipv4_addr_legal) {
6165 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) {
6173 if (stcb->asoc.scope.ipv6_addr_legal) {
6174 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
6184 if (net_tmp != NULL && stcb_tmp == stcb) {
6185 net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC;
6186 } else if (stcb_tmp != stcb) {
6187 /* It belongs to another association? */
6189 SCTP_TCB_UNLOCK(stcb_tmp);
6193 if (stcb->asoc.state == 0) {
6194 /* the assoc was freed? */
6197 /* now we must go through each of the params. */
6198 phdr = sctp_get_next_param(m, offset, ¶m_buf, sizeof(param_buf));
6200 ptype = ntohs(phdr->param_type);
6201 plen = ntohs(phdr->param_length);
6203 * SCTP_PRINTF("ptype => %0x, plen => %d\n",
6204 * (uint32_t)ptype, (int)plen);
6206 if (offset + plen > limit) {
6213 if (ptype == SCTP_IPV4_ADDRESS) {
6214 if (stcb->asoc.scope.ipv4_addr_legal) {
6215 struct sctp_ipv4addr_param *p4, p4_buf;
6217 /* ok get the v4 address and check/add */
6218 phdr = sctp_get_next_param(m, offset,
6219 (struct sctp_paramhdr *)&p4_buf,
6221 if (plen != sizeof(struct sctp_ipv4addr_param) ||
6225 p4 = (struct sctp_ipv4addr_param *)phdr;
6226 sin.sin_addr.s_addr = p4->addr;
6227 if (IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) {
6228 /* Skip multi-cast addresses */
6231 if ((sin.sin_addr.s_addr == INADDR_BROADCAST) ||
6232 (sin.sin_addr.s_addr == INADDR_ANY)) {
6235 sa = (struct sockaddr *)&sin;
6236 inp = stcb->sctp_ep;
6237 atomic_add_int(&stcb->asoc.refcnt, 1);
6238 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6240 atomic_add_int(&stcb->asoc.refcnt, -1);
6242 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) ||
6244 /* we must add the source address */
6246 * no scope set since we have a tcb
6251 * we must validate the state again
6255 if (stcb->asoc.state == 0) {
6256 /* the assoc was freed? */
6259 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) {
6262 } else if (stcb_tmp == stcb) {
6263 if (stcb->asoc.state == 0) {
6264 /* the assoc was freed? */
6270 ~SCTP_ADDR_NOT_IN_ASSOC;
6274 * strange, address is in another
6275 * assoc? straighten out locks.
6278 if (SCTP_GET_STATE(stcb_tmp) == SCTP_STATE_COOKIE_WAIT) {
6279 struct mbuf *op_err;
6280 char msg[SCTP_DIAG_INFO_LEN];
6286 snprintf(msg, sizeof(msg),
6287 "%s:%d at %s", __FILE__, __LINE__, __func__);
6288 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
6290 sctp_abort_an_association(stcb_tmp->sctp_ep,
6292 SCTP_SO_NOT_LOCKED);
6295 SCTP_TCB_UNLOCK(stcb_tmp);
6298 if (stcb->asoc.state == 0) {
6299 /* the assoc was freed? */
6308 if (ptype == SCTP_IPV6_ADDRESS) {
6309 if (stcb->asoc.scope.ipv6_addr_legal) {
6310 /* ok get the v6 address and check/add */
6311 struct sctp_ipv6addr_param *p6, p6_buf;
6313 phdr = sctp_get_next_param(m, offset,
6314 (struct sctp_paramhdr *)&p6_buf,
6316 if (plen != sizeof(struct sctp_ipv6addr_param) ||
6320 p6 = (struct sctp_ipv6addr_param *)phdr;
6321 memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
6323 if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) {
6324 /* Skip multi-cast addresses */
6327 if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) {
6329 * Link local make no sense without
6334 sa = (struct sockaddr *)&sin6;
6335 inp = stcb->sctp_ep;
6336 atomic_add_int(&stcb->asoc.refcnt, 1);
6337 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6339 atomic_add_int(&stcb->asoc.refcnt, -1);
6340 if (stcb_tmp == NULL &&
6341 (inp == stcb->sctp_ep || inp == NULL)) {
6343 * we must validate the state again
6347 if (stcb->asoc.state == 0) {
6348 /* the assoc was freed? */
6352 * we must add the address, no scope
6355 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) {
6358 } else if (stcb_tmp == stcb) {
6360 * we must validate the state again
6363 if (stcb->asoc.state == 0) {
6364 /* the assoc was freed? */
6370 ~SCTP_ADDR_NOT_IN_ASSOC;
6374 * strange, address is in another
6375 * assoc? straighten out locks.
6378 if (SCTP_GET_STATE(stcb_tmp) == SCTP_STATE_COOKIE_WAIT) {
6379 struct mbuf *op_err;
6380 char msg[SCTP_DIAG_INFO_LEN];
6386 snprintf(msg, sizeof(msg),
6387 "%s:%d at %s", __FILE__, __LINE__, __func__);
6388 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
6390 sctp_abort_an_association(stcb_tmp->sctp_ep,
6392 SCTP_SO_NOT_LOCKED);
6395 SCTP_TCB_UNLOCK(stcb_tmp);
6397 if (stcb->asoc.state == 0) {
6398 /* the assoc was freed? */
6406 if (ptype == SCTP_ECN_CAPABLE) {
6407 peer_supports_ecn = 1;
6408 } else if (ptype == SCTP_ULP_ADAPTATION) {
6409 if (stcb->asoc.state != SCTP_STATE_OPEN) {
6410 struct sctp_adaptation_layer_indication ai,
6413 phdr = sctp_get_next_param(m, offset,
6414 (struct sctp_paramhdr *)&ai, sizeof(ai));
6415 aip = (struct sctp_adaptation_layer_indication *)phdr;
6417 stcb->asoc.peers_adaptation = ntohl(aip->indication);
6418 stcb->asoc.adaptation_needed = 1;
6421 } else if (ptype == SCTP_SET_PRIM_ADDR) {
6422 struct sctp_asconf_addr_param lstore, *fee;
6424 struct sockaddr *lsa = NULL;
6426 struct sctp_asconf_addrv4_param *fii;
6429 if (stcb->asoc.asconf_supported == 0) {
6432 if (plen > sizeof(lstore)) {
6435 phdr = sctp_get_next_param(m, offset,
6436 (struct sctp_paramhdr *)&lstore,
6441 fee = (struct sctp_asconf_addr_param *)phdr;
6442 lptype = ntohs(fee->addrp.ph.param_type);
6445 case SCTP_IPV4_ADDRESS:
6447 sizeof(struct sctp_asconf_addrv4_param)) {
6448 SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n",
6449 (int)sizeof(struct sctp_asconf_addrv4_param),
6452 fii = (struct sctp_asconf_addrv4_param *)fee;
6453 sin.sin_addr.s_addr = fii->addrp.addr;
6454 lsa = (struct sockaddr *)&sin;
6459 case SCTP_IPV6_ADDRESS:
6461 sizeof(struct sctp_asconf_addr_param)) {
6462 SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n",
6463 (int)sizeof(struct sctp_asconf_addr_param),
6466 memcpy(sin6.sin6_addr.s6_addr,
6468 sizeof(fee->addrp.addr));
6469 lsa = (struct sockaddr *)&sin6;
6477 (void)sctp_set_primary_addr(stcb, sa, NULL);
6479 } else if (ptype == SCTP_HAS_NAT_SUPPORT) {
6480 stcb->asoc.peer_supports_nat = 1;
6481 } else if (ptype == SCTP_PRSCTP_SUPPORTED) {
6482 /* Peer supports pr-sctp */
6483 peer_supports_prsctp = 1;
6484 } else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) {
6485 /* A supported extension chunk */
6486 struct sctp_supported_chunk_types_param *pr_supported;
6487 uint8_t local_store[SCTP_PARAM_BUFFER_SIZE];
6490 if (plen > sizeof(local_store)) {
6493 phdr = sctp_get_next_param(m, offset,
6494 (struct sctp_paramhdr *)&local_store, plen);
6498 pr_supported = (struct sctp_supported_chunk_types_param *)phdr;
6499 num_ent = plen - sizeof(struct sctp_paramhdr);
6500 for (i = 0; i < num_ent; i++) {
6501 switch (pr_supported->chunk_types[i]) {
6503 peer_supports_asconf = 1;
6505 case SCTP_ASCONF_ACK:
6506 peer_supports_asconf_ack = 1;
6508 case SCTP_FORWARD_CUM_TSN:
6509 peer_supports_prsctp = 1;
6511 case SCTP_PACKET_DROPPED:
6512 peer_supports_pktdrop = 1;
6514 case SCTP_NR_SELECTIVE_ACK:
6515 peer_supports_nrsack = 1;
6517 case SCTP_STREAM_RESET:
6518 peer_supports_reconfig = 1;
6520 case SCTP_AUTHENTICATION:
6521 peer_supports_auth = 1;
6524 peer_supports_idata = 1;
6527 /* one I have not learned yet */
6532 } else if (ptype == SCTP_RANDOM) {
6533 if (plen > sizeof(random_store))
6536 /* already processed a RANDOM */
6539 phdr = sctp_get_next_param(m, offset,
6540 (struct sctp_paramhdr *)random_store,
6544 p_random = (struct sctp_auth_random *)phdr;
6545 random_len = plen - sizeof(*p_random);
6546 /* enforce the random length */
6547 if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) {
6548 SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n");
6552 } else if (ptype == SCTP_HMAC_LIST) {
6556 if (plen > sizeof(hmacs_store))
6559 /* already processed a HMAC list */
6562 phdr = sctp_get_next_param(m, offset,
6563 (struct sctp_paramhdr *)hmacs_store,
6567 hmacs = (struct sctp_auth_hmac_algo *)phdr;
6568 hmacs_len = plen - sizeof(*hmacs);
6569 num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]);
6570 /* validate the hmac list */
6571 if (sctp_verify_hmac_param(hmacs, num_hmacs)) {
6574 if (stcb->asoc.peer_hmacs != NULL)
6575 sctp_free_hmaclist(stcb->asoc.peer_hmacs);
6576 stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs);
6577 if (stcb->asoc.peer_hmacs != NULL) {
6578 for (i = 0; i < num_hmacs; i++) {
6579 (void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs,
6580 ntohs(hmacs->hmac_ids[i]));
6584 } else if (ptype == SCTP_CHUNK_LIST) {
6587 if (plen > sizeof(chunks_store))
6590 /* already processed a Chunks list */
6593 phdr = sctp_get_next_param(m, offset,
6594 (struct sctp_paramhdr *)chunks_store,
6598 chunks = (struct sctp_auth_chunk_list *)phdr;
6599 num_chunks = plen - sizeof(*chunks);
6600 if (stcb->asoc.peer_auth_chunks != NULL)
6601 sctp_clear_chunklist(stcb->asoc.peer_auth_chunks);
6603 stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist();
6604 for (i = 0; i < num_chunks; i++) {
6605 (void)sctp_auth_add_chunk(chunks->chunk_types[i],
6606 stcb->asoc.peer_auth_chunks);
6607 /* record asconf/asconf-ack if listed */
6608 if (chunks->chunk_types[i] == SCTP_ASCONF)
6610 if (chunks->chunk_types[i] == SCTP_ASCONF_ACK)
6615 } else if ((ptype == SCTP_HEARTBEAT_INFO) ||
6616 (ptype == SCTP_STATE_COOKIE) ||
6617 (ptype == SCTP_UNRECOG_PARAM) ||
6618 (ptype == SCTP_COOKIE_PRESERVE) ||
6619 (ptype == SCTP_SUPPORTED_ADDRTYPE) ||
6620 (ptype == SCTP_ADD_IP_ADDRESS) ||
6621 (ptype == SCTP_DEL_IP_ADDRESS) ||
6622 (ptype == SCTP_ERROR_CAUSE_IND) ||
6623 (ptype == SCTP_SUCCESS_REPORT)) {
6626 if ((ptype & 0x8000) == 0x0000) {
6628 * must stop processing the rest of the
6629 * param's. Any report bits were handled
6631 * sctp_arethere_unrecognized_parameters()
6632 * when the INIT or INIT-ACK was first seen.
6639 offset += SCTP_SIZE32(plen);
6640 if (offset >= limit) {
6643 phdr = sctp_get_next_param(m, offset, ¶m_buf,
6646 /* Now check to see if we need to purge any addresses */
6647 TAILQ_FOREACH_SAFE(net, &stcb->asoc.nets, sctp_next, nnet) {
6648 if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) ==
6649 SCTP_ADDR_NOT_IN_ASSOC) {
6650 /* This address has been removed from the asoc */
6651 /* remove and free it */
6652 stcb->asoc.numnets--;
6653 TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next);
6654 sctp_free_remote_addr(net);
6655 if (net == stcb->asoc.primary_destination) {
6656 stcb->asoc.primary_destination = NULL;
6657 sctp_select_primary_destination(stcb);
6661 if ((stcb->asoc.ecn_supported == 1) &&
6662 (peer_supports_ecn == 0)) {
6663 stcb->asoc.ecn_supported = 0;
6665 if ((stcb->asoc.prsctp_supported == 1) &&
6666 (peer_supports_prsctp == 0)) {
6667 stcb->asoc.prsctp_supported = 0;
6669 if ((stcb->asoc.auth_supported == 1) &&
6670 ((peer_supports_auth == 0) ||
6671 (got_random == 0) || (got_hmacs == 0))) {
6672 stcb->asoc.auth_supported = 0;
6674 if ((stcb->asoc.asconf_supported == 1) &&
6675 ((peer_supports_asconf == 0) || (peer_supports_asconf_ack == 0) ||
6676 (stcb->asoc.auth_supported == 0) ||
6677 (saw_asconf == 0) || (saw_asconf_ack == 0))) {
6678 stcb->asoc.asconf_supported = 0;
6680 if ((stcb->asoc.reconfig_supported == 1) &&
6681 (peer_supports_reconfig == 0)) {
6682 stcb->asoc.reconfig_supported = 0;
6684 if ((stcb->asoc.idata_supported == 1) &&
6685 (peer_supports_idata == 0)) {
6686 stcb->asoc.idata_supported = 0;
6688 if ((stcb->asoc.nrsack_supported == 1) &&
6689 (peer_supports_nrsack == 0)) {
6690 stcb->asoc.nrsack_supported = 0;
6692 if ((stcb->asoc.pktdrop_supported == 1) &&
6693 (peer_supports_pktdrop == 0)) {
6694 stcb->asoc.pktdrop_supported = 0;
6696 /* validate authentication required parameters */
6697 if ((peer_supports_auth == 0) && (got_chklist == 1)) {
6698 /* peer does not support auth but sent a chunks list? */
6701 if ((peer_supports_asconf == 1) && (peer_supports_auth == 0)) {
6702 /* peer supports asconf but not auth? */
6704 } else if ((peer_supports_asconf == 1) &&
6705 (peer_supports_auth == 1) &&
6706 ((saw_asconf == 0) || (saw_asconf_ack == 0))) {
6709 /* concatenate the full random key */
6710 keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len;
6711 if (chunks != NULL) {
6712 keylen += sizeof(*chunks) + num_chunks;
6714 new_key = sctp_alloc_key(keylen);
6715 if (new_key != NULL) {
6716 /* copy in the RANDOM */
6717 if (p_random != NULL) {
6718 keylen = sizeof(*p_random) + random_len;
6719 memcpy(new_key->key, p_random, keylen);
6723 /* append in the AUTH chunks */
6724 if (chunks != NULL) {
6725 memcpy(new_key->key + keylen, chunks,
6726 sizeof(*chunks) + num_chunks);
6727 keylen += sizeof(*chunks) + num_chunks;
6729 /* append in the HMACs */
6730 if (hmacs != NULL) {
6731 memcpy(new_key->key + keylen, hmacs,
6732 sizeof(*hmacs) + hmacs_len);
6735 /* failed to get memory for the key */
6738 if (stcb->asoc.authinfo.peer_random != NULL)
6739 sctp_free_key(stcb->asoc.authinfo.peer_random);
6740 stcb->asoc.authinfo.peer_random = new_key;
6741 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid);
6742 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid);
6748 sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa,
6749 struct sctp_nets *net)
6751 /* make sure the requested primary address exists in the assoc */
6752 if (net == NULL && sa)
6753 net = sctp_findnet(stcb, sa);
6756 /* didn't find the requested primary address! */
6759 /* set the primary address */
6760 if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
6761 /* Must be confirmed, so queue to set */
6762 net->dest_state |= SCTP_ADDR_REQ_PRIMARY;
6765 stcb->asoc.primary_destination = net;
6766 if (!(net->dest_state & SCTP_ADDR_PF) && (stcb->asoc.alternate)) {
6767 sctp_free_remote_addr(stcb->asoc.alternate);
6768 stcb->asoc.alternate = NULL;
6770 net = TAILQ_FIRST(&stcb->asoc.nets);
6771 if (net != stcb->asoc.primary_destination) {
6773 * first one on the list is NOT the primary
6774 * sctp_cmpaddr() is much more efficient if the
6775 * primary is the first on the list, make it so.
6777 TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6778 TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6785 sctp_is_vtag_good(uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now)
6788 * This function serves two purposes. It will see if a TAG can be
6789 * re-used and return 1 for yes it is ok and 0 for don't use that
6790 * tag. A secondary function it will do is purge out old tags that
6793 struct sctpvtaghead *chain;
6794 struct sctp_tagblock *twait_block;
6795 struct sctpasochead *head;
6796 struct sctp_tcb *stcb;
6799 SCTP_INP_INFO_RLOCK();
6800 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag,
6801 SCTP_BASE_INFO(hashasocmark))];
6802 LIST_FOREACH(stcb, head, sctp_asocs) {
6804 * We choose not to lock anything here. TCB's can't be
6805 * removed since we have the read lock, so they can't be
6806 * freed on us, same thing for the INP. I may be wrong with
6807 * this assumption, but we will go with it for now :-)
6809 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
6812 if (stcb->asoc.my_vtag == tag) {
6814 if (stcb->rport != rport) {
6817 if (stcb->sctp_ep->sctp_lport != lport) {
6820 /* Its a used tag set */
6821 SCTP_INP_INFO_RUNLOCK();
6825 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
6826 /* Now what about timed wait ? */
6827 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6829 * Block(s) are present, lets see if we have this tag in the
6832 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
6833 if (twait_block->vtag_block[i].v_tag == 0) {
6836 } else if ((long)twait_block->vtag_block[i].tv_sec_at_expire <
6838 /* Audit expires this guy */
6839 twait_block->vtag_block[i].tv_sec_at_expire = 0;
6840 twait_block->vtag_block[i].v_tag = 0;
6841 twait_block->vtag_block[i].lport = 0;
6842 twait_block->vtag_block[i].rport = 0;
6843 } else if ((twait_block->vtag_block[i].v_tag == tag) &&
6844 (twait_block->vtag_block[i].lport == lport) &&
6845 (twait_block->vtag_block[i].rport == rport)) {
6846 /* Bad tag, sorry :< */
6847 SCTP_INP_INFO_RUNLOCK();
6852 SCTP_INP_INFO_RUNLOCK();
6857 sctp_drain_mbufs(struct sctp_tcb *stcb)
6860 * We must hunt this association for MBUF's past the cumack (i.e.
6861 * out of order data that we can renege on).
6863 struct sctp_association *asoc;
6864 struct sctp_tmit_chunk *chk, *nchk;
6865 uint32_t cumulative_tsn_p1;
6866 struct sctp_queued_to_read *control, *ncontrol;
6871 /* We look for anything larger than the cum-ack + 1 */
6874 if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) {
6875 /* none we can reneg on. */
6878 SCTP_STAT_INCR(sctps_protocol_drains_done);
6879 cumulative_tsn_p1 = asoc->cumulative_tsn + 1;
6881 /* Ok that was fun, now we will drain all the inbound streams? */
6882 for (strmat = 0; strmat < asoc->streamincnt; strmat++) {
6883 TAILQ_FOREACH_SAFE(control, &asoc->strmin[strmat].inqueue, next_instrm, ncontrol) {
6885 if (control->on_strm_q != SCTP_ON_ORDERED) {
6886 panic("Huh control: %p on_q: %d -- not ordered?",
6887 control, control->on_strm_q);
6890 if (SCTP_TSN_GT(control->sinfo_tsn, cumulative_tsn_p1)) {
6891 /* Yep it is above cum-ack */
6893 SCTP_CALC_TSN_TO_GAP(gap, control->sinfo_tsn, asoc->mapping_array_base_tsn);
6894 KASSERT(control->length > 0, ("control has zero length"));
6895 if (asoc->size_on_all_streams >= control->length) {
6896 asoc->size_on_all_streams -= control->length;
6899 panic("size_on_all_streams = %u smaller than control length %u", asoc->size_on_all_streams, control->length);
6901 asoc->size_on_all_streams = 0;
6904 sctp_ucount_decr(asoc->cnt_on_all_streams);
6905 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6906 if (control->on_read_q) {
6907 TAILQ_REMOVE(&stcb->sctp_ep->read_queue, control, next);
6908 control->on_read_q = 0;
6910 TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, control, next_instrm);
6911 control->on_strm_q = 0;
6912 if (control->data) {
6913 sctp_m_freem(control->data);
6914 control->data = NULL;
6916 sctp_free_remote_addr(control->whoFrom);
6917 /* Now its reasm? */
6918 TAILQ_FOREACH_SAFE(chk, &control->reasm, sctp_next, nchk) {
6920 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.tsn, asoc->mapping_array_base_tsn);
6921 KASSERT(chk->send_size > 0, ("chunk has zero length"));
6922 if (asoc->size_on_reasm_queue >= chk->send_size) {
6923 asoc->size_on_reasm_queue -= chk->send_size;
6926 panic("size_on_reasm_queue = %u smaller than chunk length %u", asoc->size_on_reasm_queue, chk->send_size);
6928 asoc->size_on_reasm_queue = 0;
6931 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6932 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6933 TAILQ_REMOVE(&control->reasm, chk, sctp_next);
6935 sctp_m_freem(chk->data);
6938 sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
6940 sctp_free_a_readq(stcb, control);
6943 TAILQ_FOREACH_SAFE(control, &asoc->strmin[strmat].uno_inqueue, next_instrm, ncontrol) {
6945 if (control->on_strm_q != SCTP_ON_UNORDERED) {
6946 panic("Huh control: %p on_q: %d -- not unordered?",
6947 control, control->on_strm_q);
6950 if (SCTP_TSN_GT(control->sinfo_tsn, cumulative_tsn_p1)) {
6951 /* Yep it is above cum-ack */
6953 SCTP_CALC_TSN_TO_GAP(gap, control->sinfo_tsn, asoc->mapping_array_base_tsn);
6954 KASSERT(control->length > 0, ("control has zero length"));
6955 if (asoc->size_on_all_streams >= control->length) {
6956 asoc->size_on_all_streams -= control->length;
6959 panic("size_on_all_streams = %u smaller than control length %u", asoc->size_on_all_streams, control->length);
6961 asoc->size_on_all_streams = 0;
6964 sctp_ucount_decr(asoc->cnt_on_all_streams);
6965 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6966 if (control->on_read_q) {
6967 TAILQ_REMOVE(&stcb->sctp_ep->read_queue, control, next);
6968 control->on_read_q = 0;
6970 TAILQ_REMOVE(&asoc->strmin[strmat].uno_inqueue, control, next_instrm);
6971 control->on_strm_q = 0;
6972 if (control->data) {
6973 sctp_m_freem(control->data);
6974 control->data = NULL;
6976 sctp_free_remote_addr(control->whoFrom);
6977 /* Now its reasm? */
6978 TAILQ_FOREACH_SAFE(chk, &control->reasm, sctp_next, nchk) {
6980 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.tsn, asoc->mapping_array_base_tsn);
6981 KASSERT(chk->send_size > 0, ("chunk has zero length"));
6982 if (asoc->size_on_reasm_queue >= chk->send_size) {
6983 asoc->size_on_reasm_queue -= chk->send_size;
6986 panic("size_on_reasm_queue = %u smaller than chunk length %u", asoc->size_on_reasm_queue, chk->send_size);
6988 asoc->size_on_reasm_queue = 0;
6991 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6992 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6993 TAILQ_REMOVE(&control->reasm, chk, sctp_next);
6995 sctp_m_freem(chk->data);
6998 sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
7000 sctp_free_a_readq(stcb, control);
7005 /* We must back down to see what the new highest is */
7006 for (i = asoc->highest_tsn_inside_map; SCTP_TSN_GE(i, asoc->mapping_array_base_tsn); i--) {
7007 SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn);
7008 if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) {
7009 asoc->highest_tsn_inside_map = i;
7015 asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1;
7019 * Question, should we go through the delivery queue? The
7020 * only reason things are on here is the app not reading OR
7021 * a p-d-api up. An attacker COULD send enough in to
7022 * initiate the PD-API and then send a bunch of stuff to
7023 * other streams... these would wind up on the delivery
7024 * queue.. and then we would not get to them. But in order
7025 * to do this I then have to back-track and un-deliver
7026 * sequence numbers in streams.. el-yucko. I think for now
7027 * we will NOT look at the delivery queue and leave it to be
7028 * something to consider later. An alternative would be to
7029 * abort the P-D-API with a notification and then deliver
7030 * the data.... Or another method might be to keep track of
7031 * how many times the situation occurs and if we see a
7032 * possible attack underway just abort the association.
7035 SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt);
7038 * Now do we need to find a new
7039 * asoc->highest_tsn_inside_map?
7041 asoc->last_revoke_count = cnt;
7042 (void)SCTP_OS_TIMER_STOP(&stcb->asoc.dack_timer.timer);
7043 /* sa_ignore NO_NULL_CHK */
7044 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
7045 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED);
7048 * Another issue, in un-setting the TSN's in the mapping array we
7049 * DID NOT adjust the highest_tsn marker. This will cause one of
7050 * two things to occur. It may cause us to do extra work in checking
7051 * for our mapping array movement. More importantly it may cause us
7052 * to SACK every datagram. This may not be a bad thing though since
7053 * we will recover once we get our cum-ack above and all this stuff
7054 * we dumped recovered.
7062 * We must walk the PCB lists for ALL associations here. The system
7063 * is LOW on MBUF's and needs help. This is where reneging will
7064 * occur. We really hope this does NOT happen!
7066 VNET_ITERATOR_DECL(vnet_iter);
7067 VNET_LIST_RLOCK_NOSLEEP();
7068 VNET_FOREACH(vnet_iter) {
7069 CURVNET_SET(vnet_iter);
7070 struct sctp_inpcb *inp;
7071 struct sctp_tcb *stcb;
7073 SCTP_STAT_INCR(sctps_protocol_drain_calls);
7074 if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
7081 SCTP_INP_INFO_RLOCK();
7082 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
7083 /* For each endpoint */
7084 SCTP_INP_RLOCK(inp);
7085 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
7086 /* For each association */
7087 SCTP_TCB_LOCK(stcb);
7088 sctp_drain_mbufs(stcb);
7089 SCTP_TCB_UNLOCK(stcb);
7091 SCTP_INP_RUNLOCK(inp);
7093 SCTP_INP_INFO_RUNLOCK();
7096 VNET_LIST_RUNLOCK_NOSLEEP();
7100 * start a new iterator
7101 * iterates through all endpoints and associations based on the pcb_state
7102 * flags and asoc_state. "af" (mandatory) is executed for all matching
7103 * assocs and "ef" (optional) is executed when the iterator completes.
7104 * "inpf" (optional) is executed for each new endpoint as it is being
7105 * iterated through. inpe (optional) is called when the inp completes
7106 * its way through all the stcbs.
7109 sctp_initiate_iterator(inp_func inpf,
7113 uint32_t pcb_features,
7114 uint32_t asoc_state,
7118 struct sctp_inpcb *s_inp,
7119 uint8_t chunk_output_off)
7121 struct sctp_iterator *it = NULL;
7126 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
7127 SCTP_PRINTF("%s: abort on initialize being %d\n", __func__,
7128 SCTP_BASE_VAR(sctp_pcb_initialized));
7131 SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator),
7134 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
7137 memset(it, 0, sizeof(*it));
7138 it->function_assoc = af;
7139 it->function_inp = inpf;
7141 it->done_current_ep = 0;
7143 it->done_current_ep = 1;
7144 it->function_atend = ef;
7147 it->pcb_flags = pcb_state;
7148 it->pcb_features = pcb_features;
7149 it->asoc_state = asoc_state;
7150 it->function_inp_end = inpe;
7151 it->no_chunk_output = chunk_output_off;
7154 /* Assume lock is held here */
7156 SCTP_INP_INCR_REF(it->inp);
7157 it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP;
7159 SCTP_INP_INFO_RLOCK();
7160 it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead));
7162 SCTP_INP_INCR_REF(it->inp);
7164 SCTP_INP_INFO_RUNLOCK();
7165 it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP;
7168 SCTP_IPI_ITERATOR_WQ_LOCK();
7169 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
7170 SCTP_IPI_ITERATOR_WQ_UNLOCK();
7171 SCTP_PRINTF("%s: rollback on initialize being %d it=%p\n", __func__,
7172 SCTP_BASE_VAR(sctp_pcb_initialized), it);
7173 SCTP_FREE(it, SCTP_M_ITER);
7176 TAILQ_INSERT_TAIL(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
7177 if (sctp_it_ctl.iterator_running == 0) {
7178 sctp_wakeup_iterator();
7180 SCTP_IPI_ITERATOR_WQ_UNLOCK();
7181 /* sa_ignore MEMLEAK {memory is put on the tailq for the iterator} */