2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
4 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
9 * a) Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
12 * b) Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the distribution.
16 * c) Neither the name of Cisco Systems, Inc. nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <netinet/sctp_os.h>
38 #include <netinet/sctp_var.h>
39 #include <netinet/sctp_sysctl.h>
40 #include <netinet/sctp_pcb.h>
41 #include <netinet/sctputil.h>
42 #include <netinet/sctp.h>
43 #include <netinet/sctp_header.h>
44 #include <netinet/sctp_asconf.h>
45 #include <netinet/sctp_output.h>
46 #include <netinet/sctp_timer.h>
47 #include <netinet/sctp_bsd_addr.h>
48 #include <netinet/sctp_dtrace_define.h>
49 #if defined(INET) || defined(INET6)
50 #include <netinet/udp.h>
53 #include <netinet6/ip6_var.h>
55 #include <sys/sched.h>
57 #include <sys/unistd.h>
60 VNET_DEFINE(struct sctp_base_info, system_base_info);
62 /* FIX: we don't handle multiple link local scopes */
63 /* "scopeless" replacement IN6_ARE_ADDR_EQUAL */
66 SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b)
68 struct sockaddr_in6 tmp_a, tmp_b;
70 memcpy(&tmp_a, a, sizeof(struct sockaddr_in6));
71 if (sa6_embedscope(&tmp_a, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
74 memcpy(&tmp_b, b, sizeof(struct sockaddr_in6));
75 if (sa6_embedscope(&tmp_b, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
78 return (IN6_ARE_ADDR_EQUAL(&tmp_a.sin6_addr, &tmp_b.sin6_addr));
83 sctp_fill_pcbinfo(struct sctp_pcbinfo *spcb)
86 * We really don't need to lock this, but I will just because it
89 SCTP_INP_INFO_RLOCK();
90 spcb->ep_count = SCTP_BASE_INFO(ipi_count_ep);
91 spcb->asoc_count = SCTP_BASE_INFO(ipi_count_asoc);
92 spcb->laddr_count = SCTP_BASE_INFO(ipi_count_laddr);
93 spcb->raddr_count = SCTP_BASE_INFO(ipi_count_raddr);
94 spcb->chk_count = SCTP_BASE_INFO(ipi_count_chunk);
95 spcb->readq_count = SCTP_BASE_INFO(ipi_count_readq);
96 spcb->stream_oque = SCTP_BASE_INFO(ipi_count_strmoq);
97 spcb->free_chunks = SCTP_BASE_INFO(ipi_free_chunks);
98 SCTP_INP_INFO_RUNLOCK();
102 * Addresses are added to VRF's (Virtual Router's). For BSD we
103 * have only the default VRF 0. We maintain a hash list of
104 * VRF's. Each VRF has its own list of sctp_ifn's. Each of
105 * these has a list of addresses. When we add a new address
106 * to a VRF we lookup the ifn/ifn_index, if the ifn does
107 * not exist we create it and add it to the list of IFN's
108 * within the VRF. Once we have the sctp_ifn, we add the
109 * address to the list. So we look something like:
112 * vrf-> ifn-> ifn -> ifn
114 * ... +--ifa-> ifa -> ifa
117 * We keep these separate lists since the SCTP subsystem will
118 * point to these from its source address selection nets structure.
119 * When an address is deleted it does not happen right away on
120 * the SCTP side, it gets scheduled. What we do when a
121 * delete happens is immediately remove the address from
122 * the master list and decrement the refcount. As our
123 * addip iterator works through and frees the src address
124 * selection pointing to the sctp_ifa, eventually the refcount
125 * will reach 0 and we will delete it. Note that it is assumed
126 * that any locking on system level ifn/ifa is done at the
127 * caller of these functions and these routines will only
128 * lock the SCTP structures as they add or delete things.
130 * Other notes on VRF concepts.
131 * - An endpoint can be in multiple VRF's
132 * - An association lives within a VRF and only one VRF.
133 * - Any incoming packet we can deduce the VRF for by
134 * looking at the mbuf/pak inbound (for BSD its VRF=0 :D)
135 * - Any downward send call or connect call must supply the
136 * VRF via ancillary data or via some sort of set default
137 * VRF socket option call (again for BSD no brainer since
138 * the VRF is always 0).
139 * - An endpoint may add multiple VRF's to it.
140 * - Listening sockets can accept associations in any
141 * of the VRF's they are in but the assoc will end up
142 * in only one VRF (gotten from the packet or connect/send).
147 sctp_allocate_vrf(int vrf_id)
149 struct sctp_vrf *vrf = NULL;
150 struct sctp_vrflist *bucket;
152 /* First allocate the VRF structure */
153 vrf = sctp_find_vrf(vrf_id);
155 /* Already allocated */
158 SCTP_MALLOC(vrf, struct sctp_vrf *, sizeof(struct sctp_vrf),
163 panic("No memory for VRF:%d", vrf_id);
168 memset(vrf, 0, sizeof(struct sctp_vrf));
169 vrf->vrf_id = vrf_id;
170 LIST_INIT(&vrf->ifnlist);
171 vrf->total_ifa_count = 0;
173 /* now also setup table ids */
174 SCTP_INIT_VRF_TABLEID(vrf);
175 /* Init the HASH of addresses */
176 vrf->vrf_addr_hash = SCTP_HASH_INIT(SCTP_VRF_ADDR_HASH_SIZE,
177 &vrf->vrf_addr_hashmark);
178 if (vrf->vrf_addr_hash == NULL) {
181 panic("No memory for VRF:%d", vrf_id);
183 SCTP_FREE(vrf, SCTP_M_VRF);
186 /* Add it to the hash table */
187 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
188 LIST_INSERT_HEAD(bucket, vrf, next_vrf);
189 atomic_add_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
195 sctp_find_ifn(void *ifn, uint32_t ifn_index)
197 struct sctp_ifn *sctp_ifnp;
198 struct sctp_ifnlist *hash_ifn_head;
201 * We assume the lock is held for the addresses if that's wrong
202 * problems could occur :-)
204 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
205 LIST_FOREACH(sctp_ifnp, hash_ifn_head, next_bucket) {
206 if (sctp_ifnp->ifn_index == ifn_index) {
209 if (sctp_ifnp->ifn_p && ifn && (sctp_ifnp->ifn_p == ifn)) {
218 sctp_find_vrf(uint32_t vrf_id)
220 struct sctp_vrflist *bucket;
221 struct sctp_vrf *liste;
223 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
224 LIST_FOREACH(liste, bucket, next_vrf) {
225 if (vrf_id == liste->vrf_id) {
234 sctp_free_vrf(struct sctp_vrf *vrf)
236 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&vrf->refcount)) {
237 if (vrf->vrf_addr_hash) {
238 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
239 vrf->vrf_addr_hash = NULL;
241 /* We zero'd the count */
242 LIST_REMOVE(vrf, next_vrf);
243 SCTP_FREE(vrf, SCTP_M_VRF);
244 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
250 sctp_free_ifn(struct sctp_ifn *sctp_ifnp)
252 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifnp->refcount)) {
253 /* We zero'd the count */
254 if (sctp_ifnp->vrf) {
255 sctp_free_vrf(sctp_ifnp->vrf);
257 SCTP_FREE(sctp_ifnp, SCTP_M_IFN);
258 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
264 sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu)
266 struct sctp_ifn *sctp_ifnp;
268 sctp_ifnp = sctp_find_ifn((void *)NULL, ifn_index);
269 if (sctp_ifnp != NULL) {
270 sctp_ifnp->ifn_mtu = mtu;
276 sctp_free_ifa(struct sctp_ifa *sctp_ifap)
278 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifap->refcount)) {
279 /* We zero'd the count */
280 if (sctp_ifap->ifn_p) {
281 sctp_free_ifn(sctp_ifap->ifn_p);
283 SCTP_FREE(sctp_ifap, SCTP_M_IFA);
284 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
290 sctp_delete_ifn(struct sctp_ifn *sctp_ifnp, int hold_addr_lock)
292 struct sctp_ifn *found;
294 found = sctp_find_ifn(sctp_ifnp->ifn_p, sctp_ifnp->ifn_index);
296 /* Not in the list.. sorry */
299 if (hold_addr_lock == 0)
300 SCTP_IPI_ADDR_WLOCK();
301 LIST_REMOVE(sctp_ifnp, next_bucket);
302 LIST_REMOVE(sctp_ifnp, next_ifn);
303 SCTP_DEREGISTER_INTERFACE(sctp_ifnp->ifn_index,
304 sctp_ifnp->registered_af);
305 if (hold_addr_lock == 0)
306 SCTP_IPI_ADDR_WUNLOCK();
307 /* Take away the reference, and possibly free it */
308 sctp_free_ifn(sctp_ifnp);
313 sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr,
314 const char *if_name, uint32_t ifn_index)
316 struct sctp_vrf *vrf;
317 struct sctp_ifa *sctp_ifap;
319 SCTP_IPI_ADDR_RLOCK();
320 vrf = sctp_find_vrf(vrf_id);
322 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
326 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
327 if (sctp_ifap == NULL) {
328 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
331 if (sctp_ifap->ifn_p == NULL) {
332 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unusable\n");
336 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) != 0) {
337 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
338 sctp_ifap->ifn_p->ifn_name, if_name);
342 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
343 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
344 sctp_ifap->ifn_p->ifn_index, ifn_index);
349 sctp_ifap->localifa_flags &= (~SCTP_ADDR_VALID);
350 sctp_ifap->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE;
352 SCTP_IPI_ADDR_RUNLOCK();
357 sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr,
358 const char *if_name, uint32_t ifn_index)
360 struct sctp_vrf *vrf;
361 struct sctp_ifa *sctp_ifap;
363 SCTP_IPI_ADDR_RLOCK();
364 vrf = sctp_find_vrf(vrf_id);
366 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
370 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
371 if (sctp_ifap == NULL) {
372 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
375 if (sctp_ifap->ifn_p == NULL) {
376 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unusable\n");
380 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) != 0) {
381 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
382 sctp_ifap->ifn_p->ifn_name, if_name);
386 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
387 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
388 sctp_ifap->ifn_p->ifn_index, ifn_index);
393 sctp_ifap->localifa_flags &= (~SCTP_ADDR_IFA_UNUSEABLE);
394 sctp_ifap->localifa_flags |= SCTP_ADDR_VALID;
396 SCTP_IPI_ADDR_RUNLOCK();
401 * Add an ifa to an ifn.
402 * Register the interface as necessary.
403 * NOTE: ADDR write lock MUST be held.
406 sctp_add_ifa_to_ifn(struct sctp_ifn *sctp_ifnp, struct sctp_ifa *sctp_ifap)
410 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
411 sctp_ifap->ifn_p = sctp_ifnp;
412 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
413 /* update address counts */
414 sctp_ifnp->ifa_count++;
415 ifa_af = sctp_ifap->address.sa.sa_family;
430 if (sctp_ifnp->ifa_count == 1) {
431 /* register the new interface */
432 SCTP_REGISTER_INTERFACE(sctp_ifnp->ifn_index, ifa_af);
433 sctp_ifnp->registered_af = ifa_af;
439 * Remove an ifa from its ifn.
440 * If no more addresses exist, remove the ifn too. Otherwise, re-register
441 * the interface based on the remaining address families left.
442 * NOTE: ADDR write lock MUST be held.
445 sctp_remove_ifa_from_ifn(struct sctp_ifa *sctp_ifap)
447 LIST_REMOVE(sctp_ifap, next_ifa);
448 if (sctp_ifap->ifn_p) {
449 /* update address counts */
450 sctp_ifap->ifn_p->ifa_count--;
451 switch (sctp_ifap->address.sa.sa_family) {
454 sctp_ifap->ifn_p->num_v4--;
459 sctp_ifap->ifn_p->num_v6--;
466 if (LIST_EMPTY(&sctp_ifap->ifn_p->ifalist)) {
467 /* remove the ifn, possibly freeing it */
468 sctp_delete_ifn(sctp_ifap->ifn_p, SCTP_ADDR_LOCKED);
470 /* re-register address family type, if needed */
471 if ((sctp_ifap->ifn_p->num_v6 == 0) &&
472 (sctp_ifap->ifn_p->registered_af == AF_INET6)) {
473 SCTP_DEREGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET6);
474 SCTP_REGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET);
475 sctp_ifap->ifn_p->registered_af = AF_INET;
476 } else if ((sctp_ifap->ifn_p->num_v4 == 0) &&
477 (sctp_ifap->ifn_p->registered_af == AF_INET)) {
478 SCTP_DEREGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET);
479 SCTP_REGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET6);
480 sctp_ifap->ifn_p->registered_af = AF_INET6;
482 /* free the ifn refcount */
483 sctp_free_ifn(sctp_ifap->ifn_p);
485 sctp_ifap->ifn_p = NULL;
491 sctp_add_addr_to_vrf(uint32_t vrf_id, void *ifn, uint32_t ifn_index,
492 uint32_t ifn_type, const char *if_name, void *ifa,
493 struct sockaddr *addr, uint32_t ifa_flags,
496 struct sctp_vrf *vrf;
497 struct sctp_ifn *sctp_ifnp = NULL;
498 struct sctp_ifa *sctp_ifap = NULL;
499 struct sctp_ifalist *hash_addr_head;
500 struct sctp_ifnlist *hash_ifn_head;
501 uint32_t hash_of_addr;
505 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: adding address: ", vrf_id);
506 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
508 SCTP_IPI_ADDR_WLOCK();
509 sctp_ifnp = sctp_find_ifn(ifn, ifn_index);
511 vrf = sctp_ifnp->vrf;
513 vrf = sctp_find_vrf(vrf_id);
515 vrf = sctp_allocate_vrf(vrf_id);
517 SCTP_IPI_ADDR_WUNLOCK();
522 if (sctp_ifnp == NULL) {
524 * build one and add it, can't hold lock until after malloc
527 SCTP_IPI_ADDR_WUNLOCK();
528 SCTP_MALLOC(sctp_ifnp, struct sctp_ifn *,
529 sizeof(struct sctp_ifn), SCTP_M_IFN);
530 if (sctp_ifnp == NULL) {
532 panic("No memory for IFN");
536 memset(sctp_ifnp, 0, sizeof(struct sctp_ifn));
537 sctp_ifnp->ifn_index = ifn_index;
538 sctp_ifnp->ifn_p = ifn;
539 sctp_ifnp->ifn_type = ifn_type;
540 sctp_ifnp->refcount = 0;
541 sctp_ifnp->vrf = vrf;
542 atomic_add_int(&vrf->refcount, 1);
543 sctp_ifnp->ifn_mtu = SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, addr->sa_family);
544 if (if_name != NULL) {
545 snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", if_name);
547 snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", "unknown");
549 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
550 LIST_INIT(&sctp_ifnp->ifalist);
551 SCTP_IPI_ADDR_WLOCK();
552 LIST_INSERT_HEAD(hash_ifn_head, sctp_ifnp, next_bucket);
553 LIST_INSERT_HEAD(&vrf->ifnlist, sctp_ifnp, next_ifn);
554 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
557 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
559 /* Hmm, it already exists? */
560 if ((sctp_ifap->ifn_p) &&
561 (sctp_ifap->ifn_p->ifn_index == ifn_index)) {
562 SCTPDBG(SCTP_DEBUG_PCB4, "Using existing ifn %s (0x%x) for ifa %p\n",
563 sctp_ifap->ifn_p->ifn_name, ifn_index,
566 /* Remove the created one that we don't want */
567 sctp_delete_ifn(sctp_ifnp, SCTP_ADDR_LOCKED);
569 if (sctp_ifap->localifa_flags & SCTP_BEING_DELETED) {
570 /* easy to solve, just switch back to active */
571 SCTPDBG(SCTP_DEBUG_PCB4, "Clearing deleted ifa flag\n");
572 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
573 sctp_ifap->ifn_p = sctp_ifnp;
574 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
577 SCTP_IPI_ADDR_WUNLOCK();
580 if (sctp_ifap->ifn_p) {
582 * The last IFN gets the address, remove the
585 SCTPDBG(SCTP_DEBUG_PCB4, "Moving ifa %p from %s (0x%x) to %s (0x%x)\n",
586 (void *)sctp_ifap, sctp_ifap->ifn_p->ifn_name,
587 sctp_ifap->ifn_p->ifn_index, if_name,
589 /* remove the address from the old ifn */
590 sctp_remove_ifa_from_ifn(sctp_ifap);
591 /* move the address over to the new ifn */
592 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
593 goto exit_stage_left;
595 /* repair ifnp which was NULL ? */
596 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
597 SCTPDBG(SCTP_DEBUG_PCB4, "Repairing ifn %p for ifa %p\n",
598 (void *)sctp_ifnp, (void *)sctp_ifap);
599 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
601 goto exit_stage_left;
604 SCTP_IPI_ADDR_WUNLOCK();
605 SCTP_MALLOC(sctp_ifap, struct sctp_ifa *, sizeof(struct sctp_ifa), SCTP_M_IFA);
606 if (sctp_ifap == NULL) {
608 panic("No memory for IFA");
612 memset(sctp_ifap, 0, sizeof(struct sctp_ifa));
613 sctp_ifap->ifn_p = sctp_ifnp;
614 atomic_add_int(&sctp_ifnp->refcount, 1);
615 sctp_ifap->vrf_id = vrf_id;
616 sctp_ifap->ifa = ifa;
617 memcpy(&sctp_ifap->address, addr, addr->sa_len);
618 sctp_ifap->localifa_flags = SCTP_ADDR_VALID | SCTP_ADDR_DEFER_USE;
619 sctp_ifap->flags = ifa_flags;
621 switch (sctp_ifap->address.sa.sa_family) {
625 struct sockaddr_in *sin;
627 sin = &sctp_ifap->address.sin;
628 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
629 (IN4_ISLOOPBACK_ADDRESS(&sin->sin_addr))) {
630 sctp_ifap->src_is_loop = 1;
632 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
633 sctp_ifap->src_is_priv = 1;
637 new_ifn_af = AF_INET;
644 /* ok to use deprecated addresses? */
645 struct sockaddr_in6 *sin6;
647 sin6 = &sctp_ifap->address.sin6;
648 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
649 (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))) {
650 sctp_ifap->src_is_loop = 1;
652 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
653 sctp_ifap->src_is_priv = 1;
657 new_ifn_af = AF_INET6;
665 hash_of_addr = sctp_get_ifa_hash_val(&sctp_ifap->address.sa);
667 if ((sctp_ifap->src_is_priv == 0) &&
668 (sctp_ifap->src_is_loop == 0)) {
669 sctp_ifap->src_is_glob = 1;
671 SCTP_IPI_ADDR_WLOCK();
672 hash_addr_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
673 LIST_INSERT_HEAD(hash_addr_head, sctp_ifap, next_bucket);
674 sctp_ifap->refcount = 1;
675 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
676 sctp_ifnp->ifa_count++;
677 vrf->total_ifa_count++;
678 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
680 SCTP_REGISTER_INTERFACE(ifn_index, new_ifn_af);
681 sctp_ifnp->registered_af = new_ifn_af;
683 SCTP_IPI_ADDR_WUNLOCK();
686 * Bump up the refcount so that when the timer completes it
687 * will drop back down.
689 struct sctp_laddr *wi;
691 atomic_add_int(&sctp_ifap->refcount, 1);
692 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
695 * Gak, what can we do? We have lost an address
696 * change can you say HOSED?
698 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
699 /* Opps, must decrement the count */
700 sctp_del_addr_from_vrf(vrf_id, addr, ifn_index,
704 SCTP_INCR_LADDR_COUNT();
705 bzero(wi, sizeof(*wi));
706 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
708 wi->action = SCTP_ADD_IP_ADDRESS;
711 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
712 SCTP_WQ_ADDR_UNLOCK();
714 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
715 (struct sctp_inpcb *)NULL,
716 (struct sctp_tcb *)NULL,
717 (struct sctp_nets *)NULL);
719 /* it's ready for use */
720 sctp_ifap->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
726 sctp_del_addr_from_vrf(uint32_t vrf_id, struct sockaddr *addr,
727 uint32_t ifn_index, const char *if_name)
729 struct sctp_vrf *vrf;
730 struct sctp_ifa *sctp_ifap = NULL;
732 SCTP_IPI_ADDR_WLOCK();
733 vrf = sctp_find_vrf(vrf_id);
735 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
739 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: deleting address:", vrf_id);
740 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
742 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
744 /* Validate the delete */
745 if (sctp_ifap->ifn_p) {
749 * The name has priority over the ifn_index
750 * if its given. We do this especially for
751 * panda who might recycle indexes fast.
754 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) == 0) {
755 /* They match its a correct delete */
760 /* last ditch check ifn_index */
761 if (ifn_index == sctp_ifap->ifn_p->ifn_index) {
766 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s does not match addresses\n",
767 ifn_index, ((if_name == NULL) ? "NULL" : if_name));
768 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s - ignoring delete\n",
769 sctp_ifap->ifn_p->ifn_index, sctp_ifap->ifn_p->ifn_name);
770 SCTP_IPI_ADDR_WUNLOCK();
774 SCTPDBG(SCTP_DEBUG_PCB4, "Deleting ifa %p\n", (void *)sctp_ifap);
775 sctp_ifap->localifa_flags &= SCTP_ADDR_VALID;
777 * We don't set the flag. This means that the structure will
778 * hang around in EP's that have bound specific to it until
779 * they close. This gives us TCP like behavior if someone
780 * removes an address (or for that matter adds it right
783 /* sctp_ifap->localifa_flags |= SCTP_BEING_DELETED; */
784 vrf->total_ifa_count--;
785 LIST_REMOVE(sctp_ifap, next_bucket);
786 sctp_remove_ifa_from_ifn(sctp_ifap);
790 SCTPDBG(SCTP_DEBUG_PCB4, "Del Addr-ifn:%d Could not find address:",
792 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
797 SCTP_IPI_ADDR_WUNLOCK();
799 struct sctp_laddr *wi;
801 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
804 * Gak, what can we do? We have lost an address
805 * change can you say HOSED?
807 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
809 /* Oops, must decrement the count */
810 sctp_free_ifa(sctp_ifap);
813 SCTP_INCR_LADDR_COUNT();
814 bzero(wi, sizeof(*wi));
815 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
817 wi->action = SCTP_DEL_IP_ADDRESS;
820 * Should this really be a tailq? As it is we will process
821 * the newest first :-0
823 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
824 SCTP_WQ_ADDR_UNLOCK();
826 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
827 (struct sctp_inpcb *)NULL,
828 (struct sctp_tcb *)NULL,
829 (struct sctp_nets *)NULL);
836 sctp_does_stcb_own_this_addr(struct sctp_tcb *stcb, struct sockaddr *to)
840 int ipv4_local_scope, ipv4_addr_legal;
843 int local_scope, site_scope, ipv6_addr_legal;
845 struct sctp_vrf *vrf;
846 struct sctp_ifn *sctp_ifn;
847 struct sctp_ifa *sctp_ifa;
849 loopback_scope = stcb->asoc.scope.loopback_scope;
851 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
852 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
855 local_scope = stcb->asoc.scope.local_scope;
856 site_scope = stcb->asoc.scope.site_scope;
857 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
860 SCTP_IPI_ADDR_RLOCK();
861 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
863 /* no vrf, no addresses */
864 SCTP_IPI_ADDR_RUNLOCK();
867 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
868 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
869 if ((loopback_scope == 0) &&
870 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
873 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
874 if (sctp_is_addr_restricted(stcb, sctp_ifa) &&
875 (!sctp_is_addr_pending(stcb, sctp_ifa))) {
877 * We allow pending addresses, where
878 * we have sent an asconf-add to be
883 if (sctp_ifa->address.sa.sa_family != to->sa_family) {
886 switch (sctp_ifa->address.sa.sa_family) {
889 if (ipv4_addr_legal) {
890 struct sockaddr_in *sin,
893 sin = &sctp_ifa->address.sin;
894 rsin = (struct sockaddr_in *)to;
895 if ((ipv4_local_scope == 0) &&
896 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
899 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
900 &sin->sin_addr) != 0) {
903 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
904 SCTP_IPI_ADDR_RUNLOCK();
912 if (ipv6_addr_legal) {
913 struct sockaddr_in6 *sin6,
916 sin6 = &sctp_ifa->address.sin6;
917 rsin6 = (struct sockaddr_in6 *)to;
918 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
919 &sin6->sin6_addr) != 0) {
922 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
923 if (local_scope == 0)
925 if (sin6->sin6_scope_id == 0) {
926 if (sa6_recoverscope(sin6) != 0)
930 if ((site_scope == 0) &&
931 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
934 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
935 SCTP_IPI_ADDR_RUNLOCK();
948 struct sctp_laddr *laddr;
950 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
951 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
952 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
955 if (sctp_is_addr_restricted(stcb, laddr->ifa) &&
956 (!sctp_is_addr_pending(stcb, laddr->ifa))) {
958 * We allow pending addresses, where we have
959 * sent an asconf-add to be considered
964 if (laddr->ifa->address.sa.sa_family != to->sa_family) {
967 switch (to->sa_family) {
971 struct sockaddr_in *sin, *rsin;
973 sin = &laddr->ifa->address.sin;
974 rsin = (struct sockaddr_in *)to;
975 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
976 SCTP_IPI_ADDR_RUNLOCK();
985 struct sockaddr_in6 *sin6, *rsin6;
987 sin6 = &laddr->ifa->address.sin6;
988 rsin6 = (struct sockaddr_in6 *)to;
989 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
990 SCTP_IPI_ADDR_RUNLOCK();
1004 SCTP_IPI_ADDR_RUNLOCK();
1009 static struct sctp_tcb *
1010 sctp_tcb_special_locate(struct sctp_inpcb **inp_p, struct sockaddr *from,
1011 struct sockaddr *to, struct sctp_nets **netp, uint32_t vrf_id)
1013 /**** ASSUMES THE CALLER holds the INP_INFO_RLOCK */
1015 * If we support the TCP model, then we must now dig through to see
1016 * if we can find our endpoint in the list of tcp ep's.
1018 uint16_t lport, rport;
1019 struct sctppcbhead *ephead;
1020 struct sctp_inpcb *inp;
1021 struct sctp_laddr *laddr;
1022 struct sctp_tcb *stcb;
1023 struct sctp_nets *net;
1025 if ((to == NULL) || (from == NULL)) {
1028 switch (to->sa_family) {
1031 if (from->sa_family == AF_INET) {
1032 lport = ((struct sockaddr_in *)to)->sin_port;
1033 rport = ((struct sockaddr_in *)from)->sin_port;
1041 if (from->sa_family == AF_INET6) {
1042 lport = ((struct sockaddr_in6 *)to)->sin6_port;
1043 rport = ((struct sockaddr_in6 *)from)->sin6_port;
1052 ephead = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
1054 * Ok now for each of the guys in this bucket we must look and see:
1055 * - Does the remote port match. - Does there single association's
1056 * addresses match this address (to). If so we update p_ep to point
1057 * to this ep and return the tcb from it.
1059 LIST_FOREACH(inp, ephead, sctp_hash) {
1060 SCTP_INP_RLOCK(inp);
1061 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1062 SCTP_INP_RUNLOCK(inp);
1065 if (lport != inp->sctp_lport) {
1066 SCTP_INP_RUNLOCK(inp);
1069 switch (to->sa_family) {
1073 struct sockaddr_in *sin;
1075 sin = (struct sockaddr_in *)to;
1076 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
1077 &sin->sin_addr) != 0) {
1078 SCTP_INP_RUNLOCK(inp);
1087 struct sockaddr_in6 *sin6;
1089 sin6 = (struct sockaddr_in6 *)to;
1090 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
1091 &sin6->sin6_addr) != 0) {
1092 SCTP_INP_RUNLOCK(inp);
1099 SCTP_INP_RUNLOCK(inp);
1102 if (inp->def_vrf_id != vrf_id) {
1103 SCTP_INP_RUNLOCK(inp);
1106 /* check to see if the ep has one of the addresses */
1107 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
1108 /* We are NOT bound all, so look further */
1111 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1113 if (laddr->ifa == NULL) {
1114 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n", __func__);
1117 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1118 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
1121 if (laddr->ifa->address.sa.sa_family ==
1123 /* see if it matches */
1125 if (from->sa_family == AF_INET) {
1126 struct sockaddr_in *intf_addr,
1129 intf_addr = &laddr->ifa->address.sin;
1130 sin = (struct sockaddr_in *)to;
1131 if (sin->sin_addr.s_addr ==
1132 intf_addr->sin_addr.s_addr) {
1139 if (from->sa_family == AF_INET6) {
1140 struct sockaddr_in6 *intf_addr6;
1141 struct sockaddr_in6 *sin6;
1143 sin6 = (struct sockaddr_in6 *)
1145 intf_addr6 = &laddr->ifa->address.sin6;
1147 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1157 /* This endpoint does not have this address */
1158 SCTP_INP_RUNLOCK(inp);
1163 * Ok if we hit here the ep has the address, does it hold
1166 /* XXX: Why don't we TAILQ_FOREACH through sctp_asoc_list? */
1167 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1169 SCTP_INP_RUNLOCK(inp);
1172 SCTP_TCB_LOCK(stcb);
1173 if (!sctp_does_stcb_own_this_addr(stcb, to)) {
1174 SCTP_TCB_UNLOCK(stcb);
1175 SCTP_INP_RUNLOCK(inp);
1178 if (stcb->rport != rport) {
1179 /* remote port does not match. */
1180 SCTP_TCB_UNLOCK(stcb);
1181 SCTP_INP_RUNLOCK(inp);
1184 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1185 SCTP_TCB_UNLOCK(stcb);
1186 SCTP_INP_RUNLOCK(inp);
1189 if (!sctp_does_stcb_own_this_addr(stcb, to)) {
1190 SCTP_TCB_UNLOCK(stcb);
1191 SCTP_INP_RUNLOCK(inp);
1194 /* Does this TCB have a matching address? */
1195 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1197 if (net->ro._l_addr.sa.sa_family != from->sa_family) {
1198 /* not the same family, can't be a match */
1201 switch (from->sa_family) {
1205 struct sockaddr_in *sin, *rsin;
1207 sin = (struct sockaddr_in *)&net->ro._l_addr;
1208 rsin = (struct sockaddr_in *)from;
1209 if (sin->sin_addr.s_addr ==
1210 rsin->sin_addr.s_addr) {
1216 * Update the endpoint
1220 SCTP_INP_RUNLOCK(inp);
1229 struct sockaddr_in6 *sin6, *rsin6;
1231 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1232 rsin6 = (struct sockaddr_in6 *)from;
1233 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1240 * Update the endpoint
1244 SCTP_INP_RUNLOCK(inp);
1255 SCTP_TCB_UNLOCK(stcb);
1256 SCTP_INP_RUNLOCK(inp);
1265 * 1) If I return a NULL you must decrement any INP ref cnt. 2) If I find an
1266 * stcb, both will be locked (locked_tcb and stcb) but decrement will be done
1267 * (if locked == NULL). 3) Decrement happens on return ONLY if locked ==
1272 sctp_findassociation_ep_addr(struct sctp_inpcb **inp_p, struct sockaddr *remote,
1273 struct sctp_nets **netp, struct sockaddr *local, struct sctp_tcb *locked_tcb)
1275 struct sctpasochead *head;
1276 struct sctp_inpcb *inp;
1277 struct sctp_tcb *stcb = NULL;
1278 struct sctp_nets *net;
1282 switch (remote->sa_family) {
1285 rport = (((struct sockaddr_in *)remote)->sin_port);
1290 rport = (((struct sockaddr_in6 *)remote)->sin6_port);
1298 * UN-lock so we can do proper locking here this occurs when
1299 * called from load_addresses_from_init.
1301 atomic_add_int(&locked_tcb->asoc.refcnt, 1);
1302 SCTP_TCB_UNLOCK(locked_tcb);
1304 SCTP_INP_INFO_RLOCK();
1305 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
1306 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
1308 * Now either this guy is our listener or it's the
1309 * connector. If it is the one that issued the connect, then
1310 * it's only chance is to be the first TCB in the list. If
1311 * it is the acceptor, then do the special_lookup to hash
1312 * and find the real inp.
1314 if ((inp->sctp_socket) && (inp->sctp_socket->so_qlimit)) {
1315 /* to is peer addr, from is my addr */
1316 stcb = sctp_tcb_special_locate(inp_p, remote, local,
1317 netp, inp->def_vrf_id);
1318 if ((stcb != NULL) && (locked_tcb == NULL)) {
1319 /* we have a locked tcb, lower refcount */
1320 SCTP_INP_DECR_REF(inp);
1322 if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
1323 SCTP_INP_RLOCK(locked_tcb->sctp_ep);
1324 SCTP_TCB_LOCK(locked_tcb);
1325 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1326 SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
1328 SCTP_INP_INFO_RUNLOCK();
1331 SCTP_INP_WLOCK(inp);
1332 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1335 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1339 SCTP_TCB_LOCK(stcb);
1341 if (stcb->rport != rport) {
1342 /* remote port does not match. */
1343 SCTP_TCB_UNLOCK(stcb);
1346 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1347 SCTP_TCB_UNLOCK(stcb);
1350 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1351 SCTP_TCB_UNLOCK(stcb);
1354 /* now look at the list of remote addresses */
1355 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1357 if (net == (TAILQ_NEXT(net, sctp_next))) {
1358 panic("Corrupt net list");
1361 if (net->ro._l_addr.sa.sa_family !=
1362 remote->sa_family) {
1363 /* not the same family */
1366 switch (remote->sa_family) {
1370 struct sockaddr_in *sin,
1373 sin = (struct sockaddr_in *)
1375 rsin = (struct sockaddr_in *)remote;
1376 if (sin->sin_addr.s_addr ==
1377 rsin->sin_addr.s_addr) {
1382 if (locked_tcb == NULL) {
1383 SCTP_INP_DECR_REF(inp);
1384 } else if (locked_tcb != stcb) {
1385 SCTP_TCB_LOCK(locked_tcb);
1388 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1390 SCTP_INP_WUNLOCK(inp);
1391 SCTP_INP_INFO_RUNLOCK();
1400 struct sockaddr_in6 *sin6,
1403 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1404 rsin6 = (struct sockaddr_in6 *)remote;
1405 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1411 if (locked_tcb == NULL) {
1412 SCTP_INP_DECR_REF(inp);
1413 } else if (locked_tcb != stcb) {
1414 SCTP_TCB_LOCK(locked_tcb);
1417 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1419 SCTP_INP_WUNLOCK(inp);
1420 SCTP_INP_INFO_RUNLOCK();
1431 SCTP_TCB_UNLOCK(stcb);
1434 SCTP_INP_WLOCK(inp);
1435 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1438 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport,
1439 inp->sctp_hashmark)];
1440 LIST_FOREACH(stcb, head, sctp_tcbhash) {
1441 if (stcb->rport != rport) {
1442 /* remote port does not match */
1445 SCTP_TCB_LOCK(stcb);
1446 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1447 SCTP_TCB_UNLOCK(stcb);
1450 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1451 SCTP_TCB_UNLOCK(stcb);
1454 /* now look at the list of remote addresses */
1455 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1457 if (net == (TAILQ_NEXT(net, sctp_next))) {
1458 panic("Corrupt net list");
1461 if (net->ro._l_addr.sa.sa_family !=
1462 remote->sa_family) {
1463 /* not the same family */
1466 switch (remote->sa_family) {
1470 struct sockaddr_in *sin,
1473 sin = (struct sockaddr_in *)
1475 rsin = (struct sockaddr_in *)remote;
1476 if (sin->sin_addr.s_addr ==
1477 rsin->sin_addr.s_addr) {
1482 if (locked_tcb == NULL) {
1483 SCTP_INP_DECR_REF(inp);
1484 } else if (locked_tcb != stcb) {
1485 SCTP_TCB_LOCK(locked_tcb);
1488 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1490 SCTP_INP_WUNLOCK(inp);
1491 SCTP_INP_INFO_RUNLOCK();
1500 struct sockaddr_in6 *sin6,
1503 sin6 = (struct sockaddr_in6 *)
1505 rsin6 = (struct sockaddr_in6 *)remote;
1506 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1512 if (locked_tcb == NULL) {
1513 SCTP_INP_DECR_REF(inp);
1514 } else if (locked_tcb != stcb) {
1515 SCTP_TCB_LOCK(locked_tcb);
1518 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1520 SCTP_INP_WUNLOCK(inp);
1521 SCTP_INP_INFO_RUNLOCK();
1532 SCTP_TCB_UNLOCK(stcb);
1536 /* clean up for returning null */
1538 SCTP_TCB_LOCK(locked_tcb);
1539 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1541 SCTP_INP_WUNLOCK(inp);
1542 SCTP_INP_INFO_RUNLOCK();
1549 * Find an association for a specific endpoint using the association id given
1550 * out in the COMM_UP notification
1553 sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1556 * Use my the assoc_id to find a endpoint
1558 struct sctpasochead *head;
1559 struct sctp_tcb *stcb;
1563 SCTP_PRINTF("TSNH ep_associd\n");
1566 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1567 SCTP_PRINTF("TSNH ep_associd0\n");
1570 id = (uint32_t)asoc_id;
1571 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
1573 /* invalid id TSNH */
1574 SCTP_PRINTF("TSNH ep_associd1\n");
1577 LIST_FOREACH(stcb, head, sctp_tcbasocidhash) {
1578 if (stcb->asoc.assoc_id == id) {
1579 if (inp != stcb->sctp_ep) {
1581 * some other guy has the same id active (id
1584 SCTP_PRINTF("TSNH ep_associd2\n");
1587 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1591 SCTP_TCB_LOCK(stcb);
1601 sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1603 struct sctp_tcb *stcb;
1605 SCTP_INP_RLOCK(inp);
1606 stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
1607 SCTP_INP_RUNLOCK(inp);
1613 * Endpoint probe expects that the INP_INFO is locked.
1615 static struct sctp_inpcb *
1616 sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head,
1617 uint16_t lport, uint32_t vrf_id)
1619 struct sctp_inpcb *inp;
1620 struct sctp_laddr *laddr;
1622 struct sockaddr_in *sin;
1625 struct sockaddr_in6 *sin6;
1626 struct sockaddr_in6 *intf_addr6;
1636 switch (nam->sa_family) {
1639 sin = (struct sockaddr_in *)nam;
1644 sin6 = (struct sockaddr_in6 *)nam;
1648 /* unsupported family */
1655 LIST_FOREACH(inp, head, sctp_hash) {
1656 SCTP_INP_RLOCK(inp);
1657 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1658 SCTP_INP_RUNLOCK(inp);
1661 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) &&
1662 (inp->sctp_lport == lport)) {
1664 switch (nam->sa_family) {
1667 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1668 SCTP_IPV6_V6ONLY(inp)) {
1670 * IPv4 on a IPv6 socket with ONLY
1673 SCTP_INP_RUNLOCK(inp);
1676 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
1677 &sin->sin_addr) != 0) {
1678 SCTP_INP_RUNLOCK(inp);
1686 * A V6 address and the endpoint is NOT
1689 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
1690 SCTP_INP_RUNLOCK(inp);
1693 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
1694 &sin6->sin6_addr) != 0) {
1695 SCTP_INP_RUNLOCK(inp);
1703 /* does a VRF id match? */
1705 if (inp->def_vrf_id == vrf_id)
1708 SCTP_INP_RUNLOCK(inp);
1713 SCTP_INP_RUNLOCK(inp);
1715 switch (nam->sa_family) {
1718 if (sin->sin_addr.s_addr == INADDR_ANY) {
1719 /* Can't hunt for one that has no address specified */
1726 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1727 /* Can't hunt for one that has no address specified */
1736 * ok, not bound to all so see if we can find a EP bound to this
1739 LIST_FOREACH(inp, head, sctp_hash) {
1740 SCTP_INP_RLOCK(inp);
1741 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1742 SCTP_INP_RUNLOCK(inp);
1745 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
1746 SCTP_INP_RUNLOCK(inp);
1750 * Ok this could be a likely candidate, look at all of its
1753 if (inp->sctp_lport != lport) {
1754 SCTP_INP_RUNLOCK(inp);
1757 /* does a VRF id match? */
1759 if (inp->def_vrf_id == vrf_id)
1763 SCTP_INP_RUNLOCK(inp);
1766 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1767 if (laddr->ifa == NULL) {
1768 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
1772 SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ",
1773 (void *)laddr->ifa);
1774 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1775 SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n");
1778 if (laddr->ifa->address.sa.sa_family == nam->sa_family) {
1779 /* possible, see if it matches */
1780 switch (nam->sa_family) {
1783 if (sin->sin_addr.s_addr ==
1784 laddr->ifa->address.sin.sin_addr.s_addr) {
1785 SCTP_INP_RUNLOCK(inp);
1792 intf_addr6 = &laddr->ifa->address.sin6;
1793 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1795 SCTP_INP_RUNLOCK(inp);
1803 SCTP_INP_RUNLOCK(inp);
1809 static struct sctp_inpcb *
1810 sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
1812 struct sctppcbhead *head;
1813 struct sctp_inpcb *t_inp;
1816 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1817 SCTP_BASE_INFO(hashmark))];
1818 LIST_FOREACH(t_inp, head, sctp_hash) {
1819 if (t_inp->sctp_lport != lport) {
1822 /* is it in the VRF in question */
1824 if (t_inp->def_vrf_id == vrf_id)
1829 /* This one is in use. */
1830 /* check the v6/v4 binding issue */
1831 if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1832 SCTP_IPV6_V6ONLY(t_inp)) {
1833 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1834 /* collision in V6 space */
1837 /* inp is BOUND_V4 no conflict */
1840 } else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1841 /* t_inp is bound v4 and v6, conflict always */
1844 /* t_inp is bound only V4 */
1845 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1846 SCTP_IPV6_V6ONLY(inp)) {
1850 /* else fall through to conflict */
1859 sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
1861 /* For 1-2-1 with port reuse */
1862 struct sctppcbhead *head;
1863 struct sctp_inpcb *tinp, *ninp;
1865 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
1866 /* only works with port reuse on */
1869 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) {
1872 SCTP_INP_RUNLOCK(inp);
1873 SCTP_INP_INFO_WLOCK();
1874 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport,
1875 SCTP_BASE_INFO(hashmark))];
1876 /* Kick out all non-listeners to the TCP hash */
1877 LIST_FOREACH_SAFE(tinp, head, sctp_hash, ninp) {
1878 if (tinp->sctp_lport != inp->sctp_lport) {
1881 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1884 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
1887 if (tinp->sctp_socket->so_qlimit) {
1890 SCTP_INP_WLOCK(tinp);
1891 LIST_REMOVE(tinp, sctp_hash);
1892 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))];
1893 tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
1894 LIST_INSERT_HEAD(head, tinp, sctp_hash);
1895 SCTP_INP_WUNLOCK(tinp);
1897 SCTP_INP_WLOCK(inp);
1898 /* Pull from where he was */
1899 LIST_REMOVE(inp, sctp_hash);
1900 inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL;
1901 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))];
1902 LIST_INSERT_HEAD(head, inp, sctp_hash);
1903 SCTP_INP_WUNLOCK(inp);
1904 SCTP_INP_RLOCK(inp);
1905 SCTP_INP_INFO_WUNLOCK();
1911 sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock,
1915 * First we check the hash table to see if someone has this port
1916 * bound with just the port.
1918 struct sctp_inpcb *inp;
1919 struct sctppcbhead *head;
1923 struct sockaddr_in *sin;
1926 struct sockaddr_in6 *sin6;
1929 switch (nam->sa_family) {
1932 sin = (struct sockaddr_in *)nam;
1933 lport = sin->sin_port;
1938 sin6 = (struct sockaddr_in6 *)nam;
1939 lport = sin6->sin6_port;
1946 * I could cheat here and just cast to one of the types but we will
1947 * do it right. It also provides the check against an Unsupported
1950 /* Find the head of the ALLADDR chain */
1951 if (have_lock == 0) {
1952 SCTP_INP_INFO_RLOCK();
1954 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1955 SCTP_BASE_INFO(hashmark))];
1956 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1959 * If the TCP model exists it could be that the main listening
1960 * endpoint is gone but there still exists a connected socket for
1961 * this guy. If so we can return the first one that we find. This
1962 * may NOT be the correct one so the caller should be wary on the
1963 * returned INP. Currently the only caller that sets find_tcp_pool
1964 * is in bindx where we are verifying that a user CAN bind the
1965 * address. He either has bound it already, or someone else has, or
1966 * its open to bind, so this is good enough.
1968 if (inp == NULL && find_tcp_pool) {
1969 for (i = 0; i < SCTP_BASE_INFO(hashtcpmark) + 1; i++) {
1970 head = &SCTP_BASE_INFO(sctp_tcpephash)[i];
1971 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1978 SCTP_INP_INCR_REF(inp);
1980 if (have_lock == 0) {
1981 SCTP_INP_INFO_RUNLOCK();
1988 * Find an association for an endpoint with the pointer to whom you want to
1989 * send to and the endpoint pointer. The address can be IPv4 or IPv6. We may
1990 * need to change the *to to some other struct like a mbuf...
1993 sctp_findassociation_addr_sa(struct sockaddr *from, struct sockaddr *to,
1994 struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool,
1997 struct sctp_inpcb *inp = NULL;
1998 struct sctp_tcb *stcb;
2000 SCTP_INP_INFO_RLOCK();
2001 if (find_tcp_pool) {
2002 if (inp_p != NULL) {
2003 stcb = sctp_tcb_special_locate(inp_p, from, to, netp,
2006 stcb = sctp_tcb_special_locate(&inp, from, to, netp,
2010 SCTP_INP_INFO_RUNLOCK();
2014 inp = sctp_pcb_findep(to, 0, 1, vrf_id);
2015 if (inp_p != NULL) {
2018 SCTP_INP_INFO_RUNLOCK();
2023 * ok, we have an endpoint, now lets find the assoc for it (if any)
2024 * we now place the source address or from in the to of the find
2025 * endpoint call. Since in reality this chain is used from the
2026 * inbound packet side.
2028 if (inp_p != NULL) {
2029 stcb = sctp_findassociation_ep_addr(inp_p, from, netp, to,
2032 stcb = sctp_findassociation_ep_addr(&inp, from, netp, to,
2040 * This routine will grub through the mbuf that is a INIT or INIT-ACK and
2041 * find all addresses that the sender has specified in any address list. Each
2042 * address will be used to lookup the TCB and see if one exits.
2044 static struct sctp_tcb *
2045 sctp_findassociation_special_addr(struct mbuf *m, int offset,
2046 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp,
2047 struct sockaddr *dst)
2049 struct sctp_paramhdr *phdr, parm_buf;
2050 #if defined(INET) || defined(INET6)
2051 struct sctp_tcb *stcb;
2056 struct sockaddr_in sin4;
2059 struct sockaddr_in6 sin6;
2063 memset(&sin4, 0, sizeof(sin4));
2064 sin4.sin_len = sizeof(sin4);
2065 sin4.sin_family = AF_INET;
2066 sin4.sin_port = sh->src_port;
2069 memset(&sin6, 0, sizeof(sin6));
2070 sin6.sin6_len = sizeof(sin6);
2071 sin6.sin6_family = AF_INET6;
2072 sin6.sin6_port = sh->src_port;
2075 offset += sizeof(struct sctp_init_chunk);
2077 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
2078 while (phdr != NULL) {
2079 /* now we must see if we want the parameter */
2080 #if defined(INET) || defined(INET6)
2081 ptype = ntohs(phdr->param_type);
2083 plen = ntohs(phdr->param_length);
2088 if (ptype == SCTP_IPV4_ADDRESS &&
2089 plen == sizeof(struct sctp_ipv4addr_param)) {
2090 /* Get the rest of the address */
2091 struct sctp_ipv4addr_param ip4_parm, *p4;
2093 phdr = sctp_get_next_param(m, offset,
2094 (struct sctp_paramhdr *)&ip4_parm, min(plen, sizeof(ip4_parm)));
2098 p4 = (struct sctp_ipv4addr_param *)phdr;
2099 memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr));
2101 stcb = sctp_findassociation_ep_addr(inp_p,
2102 (struct sockaddr *)&sin4, netp, dst, NULL);
2109 if (ptype == SCTP_IPV6_ADDRESS &&
2110 plen == sizeof(struct sctp_ipv6addr_param)) {
2111 /* Get the rest of the address */
2112 struct sctp_ipv6addr_param ip6_parm, *p6;
2114 phdr = sctp_get_next_param(m, offset,
2115 (struct sctp_paramhdr *)&ip6_parm, min(plen, sizeof(ip6_parm)));
2119 p6 = (struct sctp_ipv6addr_param *)phdr;
2120 memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr));
2122 stcb = sctp_findassociation_ep_addr(inp_p,
2123 (struct sockaddr *)&sin6, netp, dst, NULL);
2129 offset += SCTP_SIZE32(plen);
2130 phdr = sctp_get_next_param(m, offset, &parm_buf,
2136 static struct sctp_tcb *
2137 sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag,
2138 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport,
2139 uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
2142 * Use my vtag to hash. If we find it we then verify the source addr
2143 * is in the assoc. If all goes well we save a bit on rec of a
2146 struct sctpasochead *head;
2147 struct sctp_nets *net;
2148 struct sctp_tcb *stcb;
2150 SCTP_INP_INFO_RLOCK();
2151 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag,
2152 SCTP_BASE_INFO(hashasocmark))];
2153 LIST_FOREACH(stcb, head, sctp_asocs) {
2154 SCTP_INP_RLOCK(stcb->sctp_ep);
2155 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
2156 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2159 if (stcb->sctp_ep->def_vrf_id != vrf_id) {
2160 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2163 SCTP_TCB_LOCK(stcb);
2164 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2165 if (stcb->asoc.my_vtag == vtag) {
2167 if (stcb->rport != rport) {
2168 SCTP_TCB_UNLOCK(stcb);
2171 if (stcb->sctp_ep->sctp_lport != lport) {
2172 SCTP_TCB_UNLOCK(stcb);
2175 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
2176 SCTP_TCB_UNLOCK(stcb);
2179 /* RRS:Need toaddr check here */
2180 if (sctp_does_stcb_own_this_addr(stcb, to) == 0) {
2181 /* Endpoint does not own this address */
2182 SCTP_TCB_UNLOCK(stcb);
2187 * If we have both vtags that's all we match
2190 if (stcb->asoc.peer_vtag == remote_tag) {
2192 * If both tags match we consider it
2193 * conclusive and check NO
2194 * source/destination addresses
2199 if (skip_src_check) {
2202 *netp = sctp_findnet(stcb, from);
2204 *netp = NULL; /* unknown */
2207 *inp_p = stcb->sctp_ep;
2208 SCTP_INP_INFO_RUNLOCK();
2211 net = sctp_findnet(stcb, from);
2215 SCTP_STAT_INCR(sctps_vtagexpress);
2216 *inp_p = stcb->sctp_ep;
2217 SCTP_INP_INFO_RUNLOCK();
2221 * not him, this should only happen in rare
2222 * cases so I peg it.
2224 SCTP_STAT_INCR(sctps_vtagbogus);
2227 SCTP_TCB_UNLOCK(stcb);
2229 SCTP_INP_INFO_RUNLOCK();
2235 * Find an association with the pointer to the inbound IP packet. This can be
2236 * a IPv4 or IPv6 packet.
2239 sctp_findassociation_addr(struct mbuf *m, int offset,
2240 struct sockaddr *src, struct sockaddr *dst,
2241 struct sctphdr *sh, struct sctp_chunkhdr *ch,
2242 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2244 struct sctp_tcb *stcb;
2245 struct sctp_inpcb *inp;
2248 /* we only go down this path if vtag is non-zero */
2249 stcb = sctp_findassoc_by_vtag(src, dst, ntohl(sh->v_tag),
2250 inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0);
2256 stcb = sctp_findassociation_addr_sa(src, dst, inp_p, netp,
2260 stcb = sctp_findassociation_addr_sa(src, dst, &inp, netp,
2263 SCTPDBG(SCTP_DEBUG_PCB1, "stcb:%p inp:%p\n", (void *)stcb, (void *)inp);
2264 if (stcb == NULL && inp) {
2265 /* Found a EP but not this address */
2266 if ((ch->chunk_type == SCTP_INITIATION) ||
2267 (ch->chunk_type == SCTP_INITIATION_ACK)) {
2269 * special hook, we do NOT return linp or an
2270 * association that is linked to an existing
2271 * association that is under the TCP pool (i.e. no
2272 * listener exists). The endpoint finding routine
2273 * will always find a listener before examining the
2276 if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
2282 stcb = sctp_findassociation_special_addr(m,
2283 offset, sh, &inp, netp, dst);
2284 if (inp_p != NULL) {
2289 SCTPDBG(SCTP_DEBUG_PCB1, "stcb is %p\n", (void *)stcb);
2294 * lookup an association by an ASCONF lookup address.
2295 * if the lookup address is 0.0.0.0 or ::0, use the vtag to do the lookup
2298 sctp_findassociation_ep_asconf(struct mbuf *m, int offset,
2299 struct sockaddr *dst, struct sctphdr *sh,
2300 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2302 struct sctp_tcb *stcb;
2303 union sctp_sockstore remote_store;
2304 struct sctp_paramhdr parm_buf, *phdr;
2306 int zero_address = 0;
2308 struct sockaddr_in *sin;
2311 struct sockaddr_in6 *sin6;
2314 memset(&remote_store, 0, sizeof(remote_store));
2315 phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk),
2316 &parm_buf, sizeof(struct sctp_paramhdr));
2318 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n",
2322 ptype = (int)((uint32_t)ntohs(phdr->param_type));
2323 /* get the correlation address */
2326 case SCTP_IPV6_ADDRESS:
2328 /* ipv6 address param */
2329 struct sctp_ipv6addr_param *p6, p6_buf;
2331 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) {
2334 p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m,
2335 offset + sizeof(struct sctp_asconf_chunk),
2336 &p6_buf.ph, sizeof(*p6));
2338 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n",
2342 sin6 = &remote_store.sin6;
2343 sin6->sin6_family = AF_INET6;
2344 sin6->sin6_len = sizeof(*sin6);
2345 sin6->sin6_port = sh->src_port;
2346 memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr));
2347 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
2353 case SCTP_IPV4_ADDRESS:
2355 /* ipv4 address param */
2356 struct sctp_ipv4addr_param *p4, p4_buf;
2358 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) {
2361 p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m,
2362 offset + sizeof(struct sctp_asconf_chunk),
2363 &p4_buf.ph, sizeof(*p4));
2365 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n",
2369 sin = &remote_store.sin;
2370 sin->sin_family = AF_INET;
2371 sin->sin_len = sizeof(*sin);
2372 sin->sin_port = sh->src_port;
2373 memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr));
2374 if (sin->sin_addr.s_addr == INADDR_ANY)
2380 /* invalid address param type */
2385 stcb = sctp_findassoc_by_vtag(NULL, dst, ntohl(sh->v_tag), inp_p,
2386 netp, sh->src_port, sh->dest_port, 1, vrf_id, 0);
2388 SCTP_INP_DECR_REF(*inp_p);
2391 stcb = sctp_findassociation_ep_addr(inp_p,
2392 &remote_store.sa, netp,
2400 * allocate a sctp_inpcb and setup a temporary binding to a port/all
2401 * addresses. This way if we don't get a bind we by default pick a ephemeral
2402 * port with all addresses bound.
2405 sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
2408 * we get called when a new endpoint starts up. We need to allocate
2409 * the sctp_inpcb structure from the zone and init it. Mark it as
2410 * unbound and find a port that we can use as an ephemeral with
2411 * INADDR_ANY. If the user binds later no problem we can then add in
2412 * the specific addresses. And setup the default parameters for the
2416 struct sctp_inpcb *inp;
2418 struct timeval time;
2419 sctp_sharedkey_t *null_key;
2423 SCTP_INP_INFO_WLOCK();
2424 inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb);
2426 SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n");
2427 SCTP_INP_INFO_WUNLOCK();
2428 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2432 bzero(inp, sizeof(*inp));
2434 /* bump generations */
2435 /* setup socket pointers */
2436 inp->sctp_socket = so;
2437 inp->ip_inp.inp.inp_socket = so;
2438 inp->ip_inp.inp.inp_cred = crhold(so->so_cred);
2440 if (INP_SOCKAF(so) == AF_INET6) {
2441 if (MODULE_GLOBAL(ip6_auto_flowlabel)) {
2442 inp->ip_inp.inp.inp_flags |= IN6P_AUTOFLOWLABEL;
2444 if (MODULE_GLOBAL(ip6_v6only)) {
2445 inp->ip_inp.inp.inp_flags |= IN6P_IPV6_V6ONLY;
2449 inp->sctp_associd_counter = 1;
2450 inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT;
2451 inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
2453 inp->sctp_cmt_on_off = SCTP_BASE_SYSCTL(sctp_cmt_on_off);
2454 inp->ecn_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_ecn_enable);
2455 inp->prsctp_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_pr_enable);
2456 inp->auth_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_auth_enable);
2457 inp->asconf_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_asconf_enable);
2458 inp->reconfig_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_reconfig_enable);
2459 inp->nrsack_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_nrsack_enable);
2460 inp->pktdrop_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_pktdrop_enable);
2461 inp->idata_supported = 0;
2463 inp->fibnum = so->so_fibnum;
2464 /* init the small hash table we use to track asocid <-> tcb */
2465 inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark);
2466 if (inp->sctp_asocidhash == NULL) {
2467 crfree(inp->ip_inp.inp.inp_cred);
2468 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2469 SCTP_INP_INFO_WUNLOCK();
2472 SCTP_INCR_EP_COUNT();
2473 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
2474 SCTP_INP_INFO_WUNLOCK();
2476 so->so_pcb = (caddr_t)inp;
2478 if (SCTP_SO_TYPE(so) == SOCK_SEQPACKET) {
2479 /* UDP style socket */
2480 inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
2481 SCTP_PCB_FLAGS_UNBOUND);
2482 /* Be sure it is NON-BLOCKING IO for UDP */
2483 /* SCTP_SET_SO_NBIO(so); */
2484 } else if (SCTP_SO_TYPE(so) == SOCK_STREAM) {
2485 /* TCP style socket */
2486 inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
2487 SCTP_PCB_FLAGS_UNBOUND);
2488 /* Be sure we have blocking IO by default */
2489 SCTP_CLEAR_SO_NBIO(so);
2492 * unsupported socket type (RAW, etc)- in case we missed it
2495 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
2497 crfree(inp->ip_inp.inp.inp_cred);
2498 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2499 return (EOPNOTSUPP);
2501 if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) {
2502 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2503 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2504 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) {
2505 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2506 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2507 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) {
2508 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2509 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2511 inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize),
2512 &inp->sctp_hashmark);
2513 if (inp->sctp_tcbhash == NULL) {
2514 SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
2515 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2517 crfree(inp->ip_inp.inp.inp_cred);
2518 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2521 inp->def_vrf_id = vrf_id;
2523 SCTP_INP_INFO_WLOCK();
2524 SCTP_INP_LOCK_INIT(inp);
2525 INP_LOCK_INIT(&inp->ip_inp.inp, "inp", "sctpinp");
2526 SCTP_INP_READ_INIT(inp);
2527 SCTP_ASOC_CREATE_LOCK_INIT(inp);
2528 /* lock the new ep */
2529 SCTP_INP_WLOCK(inp);
2531 /* add it to the info area */
2532 LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list);
2533 SCTP_INP_INFO_WUNLOCK();
2535 TAILQ_INIT(&inp->read_queue);
2536 LIST_INIT(&inp->sctp_addr_list);
2538 LIST_INIT(&inp->sctp_asoc_list);
2540 #ifdef SCTP_TRACK_FREED_ASOCS
2542 LIST_INIT(&inp->sctp_asoc_free_list);
2544 /* Init the timer structure for signature change */
2545 SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer);
2546 inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE;
2548 /* now init the actual endpoint default data */
2551 /* setup the base timeout information */
2552 m->sctp_timeoutticks[SCTP_TIMER_SEND] = SEC_TO_TICKS(SCTP_SEND_SEC); /* needed ? */
2553 m->sctp_timeoutticks[SCTP_TIMER_INIT] = SEC_TO_TICKS(SCTP_INIT_SEC); /* needed ? */
2554 m->sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default));
2555 m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default));
2556 m->sctp_timeoutticks[SCTP_TIMER_PMTU] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default));
2557 m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default));
2558 m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default));
2559 /* all max/min max are in ms */
2560 m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default);
2561 m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default);
2562 m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default);
2563 m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default);
2564 m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default);
2565 m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default);
2566 m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default);
2567 m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default);
2568 m->def_net_pf_threshold = SCTP_BASE_SYSCTL(sctp_path_pf_threshold);
2569 m->sctp_sws_sender = SCTP_SWS_SENDER_DEF;
2570 m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF;
2571 m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default);
2572 m->fr_max_burst = SCTP_BASE_SYSCTL(sctp_fr_max_burst_default);
2574 m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module);
2575 m->sctp_default_ss_module = SCTP_BASE_SYSCTL(sctp_default_ss_module);
2576 m->max_open_streams_intome = SCTP_BASE_SYSCTL(sctp_nr_incoming_streams_default);
2577 /* number of streams to pre-open on a association */
2578 m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default);
2580 /* Add adaptation cookie */
2581 m->adaptation_layer_indicator = 0;
2582 m->adaptation_layer_indicator_provided = 0;
2584 /* seed random number generator */
2585 m->random_counter = 1;
2586 m->store_at = SCTP_SIGNATURE_SIZE;
2587 SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers));
2588 sctp_fill_random_store(m);
2590 /* Minimum cookie size */
2591 m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) +
2592 sizeof(struct sctp_state_cookie);
2593 m->size_of_a_cookie += SCTP_SIGNATURE_SIZE;
2595 /* Setup the initial secret */
2596 (void)SCTP_GETTIME_TIMEVAL(&time);
2597 m->time_of_secret_change = time.tv_sec;
2599 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
2600 m->secret_key[0][i] = sctp_select_initial_TSN(m);
2602 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
2604 /* How long is a cookie good for ? */
2605 m->def_cookie_life = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default));
2607 * Initialize authentication parameters
2609 m->local_hmacs = sctp_default_supported_hmaclist();
2610 m->local_auth_chunks = sctp_alloc_chunklist();
2611 if (inp->asconf_supported) {
2612 sctp_auth_add_chunk(SCTP_ASCONF, m->local_auth_chunks);
2613 sctp_auth_add_chunk(SCTP_ASCONF_ACK, m->local_auth_chunks);
2615 m->default_dscp = 0;
2617 m->default_flowlabel = 0;
2619 m->port = 0; /* encapsulation disabled by default */
2620 LIST_INIT(&m->shared_keys);
2621 /* add default NULL key as key id 0 */
2622 null_key = sctp_alloc_sharedkey();
2623 sctp_insert_sharedkey(&m->shared_keys, null_key);
2624 SCTP_INP_WUNLOCK(inp);
2625 #ifdef SCTP_LOG_CLOSING
2626 sctp_log_closing(inp, NULL, 12);
2633 sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp,
2634 struct sctp_tcb *stcb)
2636 struct sctp_nets *net;
2637 uint16_t lport, rport;
2638 struct sctppcbhead *head;
2639 struct sctp_laddr *laddr, *oladdr;
2641 atomic_add_int(&stcb->asoc.refcnt, 1);
2642 SCTP_TCB_UNLOCK(stcb);
2643 SCTP_INP_INFO_WLOCK();
2644 SCTP_INP_WLOCK(old_inp);
2645 SCTP_INP_WLOCK(new_inp);
2646 SCTP_TCB_LOCK(stcb);
2647 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2649 new_inp->sctp_ep.time_of_secret_change =
2650 old_inp->sctp_ep.time_of_secret_change;
2651 memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key,
2652 sizeof(old_inp->sctp_ep.secret_key));
2653 new_inp->sctp_ep.current_secret_number =
2654 old_inp->sctp_ep.current_secret_number;
2655 new_inp->sctp_ep.last_secret_number =
2656 old_inp->sctp_ep.last_secret_number;
2657 new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie;
2659 /* make it so new data pours into the new socket */
2660 stcb->sctp_socket = new_inp->sctp_socket;
2661 stcb->sctp_ep = new_inp;
2663 /* Copy the port across */
2664 lport = new_inp->sctp_lport = old_inp->sctp_lport;
2665 rport = stcb->rport;
2666 /* Pull the tcb from the old association */
2667 LIST_REMOVE(stcb, sctp_tcbhash);
2668 LIST_REMOVE(stcb, sctp_tcblist);
2669 if (stcb->asoc.in_asocid_hash) {
2670 LIST_REMOVE(stcb, sctp_tcbasocidhash);
2672 /* Now insert the new_inp into the TCP connected hash */
2673 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
2675 LIST_INSERT_HEAD(head, new_inp, sctp_hash);
2676 /* Its safe to access */
2677 new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
2679 /* Now move the tcb into the endpoint list */
2680 LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist);
2682 * Question, do we even need to worry about the ep-hash since we
2683 * only have one connection? Probably not :> so lets get rid of it
2684 * and not suck up any kernel memory in that.
2686 if (stcb->asoc.in_asocid_hash) {
2687 struct sctpasochead *lhd;
2689 lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id,
2690 new_inp->hashasocidmark)];
2691 LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash);
2693 /* Ok. Let's restart timer. */
2694 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2695 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp,
2699 SCTP_INP_INFO_WUNLOCK();
2700 if (new_inp->sctp_tcbhash != NULL) {
2701 SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark);
2702 new_inp->sctp_tcbhash = NULL;
2704 if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2705 /* Subset bound, so copy in the laddr list from the old_inp */
2706 LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) {
2707 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2708 if (laddr == NULL) {
2710 * Gak, what can we do? This assoc is really
2711 * HOSED. We probably should send an abort
2714 SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n");
2717 SCTP_INCR_LADDR_COUNT();
2718 bzero(laddr, sizeof(*laddr));
2719 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2720 laddr->ifa = oladdr->ifa;
2721 atomic_add_int(&laddr->ifa->refcount, 1);
2722 LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr,
2724 new_inp->laddr_count++;
2725 if (oladdr == stcb->asoc.last_used_address) {
2726 stcb->asoc.last_used_address = laddr;
2731 * Now any running timers need to be adjusted since we really don't
2732 * care if they are running or not just blast in the new_inp into
2736 stcb->asoc.dack_timer.ep = (void *)new_inp;
2737 stcb->asoc.asconf_timer.ep = (void *)new_inp;
2738 stcb->asoc.strreset_timer.ep = (void *)new_inp;
2739 stcb->asoc.shut_guard_timer.ep = (void *)new_inp;
2740 stcb->asoc.autoclose_timer.ep = (void *)new_inp;
2741 stcb->asoc.delayed_event_timer.ep = (void *)new_inp;
2742 stcb->asoc.delete_prim_timer.ep = (void *)new_inp;
2743 /* now what about the nets? */
2744 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2745 net->pmtu_timer.ep = (void *)new_inp;
2746 net->hb_timer.ep = (void *)new_inp;
2747 net->rxt_timer.ep = (void *)new_inp;
2749 SCTP_INP_WUNLOCK(new_inp);
2750 SCTP_INP_WUNLOCK(old_inp);
2754 * insert an laddr entry with the given ifa for the desired list
2757 sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
2759 struct sctp_laddr *laddr;
2761 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2762 if (laddr == NULL) {
2763 /* out of memory? */
2764 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2767 SCTP_INCR_LADDR_COUNT();
2768 bzero(laddr, sizeof(*laddr));
2769 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2771 laddr->action = act;
2772 atomic_add_int(&ifa->refcount, 1);
2774 LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr);
2780 * Remove an laddr entry from the local address list (on an assoc)
2783 sctp_remove_laddr(struct sctp_laddr *laddr)
2786 /* remove from the list */
2787 LIST_REMOVE(laddr, sctp_nxt_addr);
2788 sctp_free_ifa(laddr->ifa);
2789 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr);
2790 SCTP_DECR_LADDR_COUNT();
2795 /* sctp_ifap is used to bypass normal local address validation checks */
2797 sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
2798 struct sctp_ifa *sctp_ifap, struct thread *p)
2800 /* bind a ep to a socket address */
2801 struct sctppcbhead *head;
2802 struct sctp_inpcb *inp, *inp_tmp;
2803 struct inpcb *ip_inp;
2804 int port_reuse_active = 0;
2812 inp = (struct sctp_inpcb *)so->so_pcb;
2813 ip_inp = (struct inpcb *)so->so_pcb;
2816 SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port: %d\n",
2817 ntohs(((struct sockaddr_in *)addr)->sin_port));
2818 SCTPDBG(SCTP_DEBUG_PCB1, "Addr: ");
2819 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
2822 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2823 /* already did a bind, subsequent binds NOT allowed ! */
2824 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2829 panic("null proc/thread");
2832 switch (addr->sa_family) {
2836 struct sockaddr_in *sin;
2838 /* IPV6_V6ONLY socket? */
2839 if (SCTP_IPV6_V6ONLY(ip_inp)) {
2840 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2843 if (addr->sa_len != sizeof(*sin)) {
2844 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2847 sin = (struct sockaddr_in *)addr;
2848 lport = sin->sin_port;
2850 * For LOOPBACK the prison_local_ip4() call
2851 * will transmute the ip address to the
2854 if (p && (error = prison_local_ip4(p->td_ucred, &sin->sin_addr)) != 0) {
2855 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2858 if (sin->sin_addr.s_addr != INADDR_ANY) {
2868 * Only for pure IPv6 Address. (No IPv4
2871 struct sockaddr_in6 *sin6;
2873 sin6 = (struct sockaddr_in6 *)addr;
2875 if (addr->sa_len != sizeof(*sin6)) {
2876 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2879 lport = sin6->sin6_port;
2881 * For LOOPBACK the prison_local_ip6() call
2882 * will transmute the ipv6 address to the
2885 if (p && (error = prison_local_ip6(p->td_ucred, &sin6->sin6_addr,
2886 (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
2887 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2890 if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2892 /* KAME hack: embed scopeid */
2893 if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
2894 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2898 /* this must be cleared for ifa_ifwithaddr() */
2899 sin6->sin6_scope_id = 0;
2904 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EAFNOSUPPORT);
2905 return (EAFNOSUPPORT);
2908 SCTP_INP_INFO_WLOCK();
2909 SCTP_INP_WLOCK(inp);
2910 /* Setup a vrf_id to be the default for the non-bind-all case. */
2911 vrf_id = inp->def_vrf_id;
2913 /* increase our count due to the unlock we do */
2914 SCTP_INP_INCR_REF(inp);
2917 * Did the caller specify a port? if so we must see if an ep
2918 * already has this one bound.
2920 /* got to be root to get at low ports */
2921 if (ntohs(lport) < IPPORT_RESERVED) {
2923 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2925 SCTP_INP_DECR_REF(inp);
2926 SCTP_INP_WUNLOCK(inp);
2927 SCTP_INP_INFO_WUNLOCK();
2931 SCTP_INP_WUNLOCK(inp);
2933 vrf_id = inp->def_vrf_id;
2934 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2935 if (inp_tmp != NULL) {
2937 * lock guy returned and lower count note
2938 * that we are not bound so inp_tmp should
2939 * NEVER be inp. And it is this inp
2940 * (inp_tmp) that gets the reference bump,
2941 * so we must lower it.
2943 SCTP_INP_DECR_REF(inp_tmp);
2945 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2946 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2948 * Ok, must be one-2-one and
2949 * allowing port re-use
2951 port_reuse_active = 1;
2952 goto continue_anyway;
2954 SCTP_INP_DECR_REF(inp);
2955 SCTP_INP_INFO_WUNLOCK();
2956 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2957 return (EADDRINUSE);
2960 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2961 if (inp_tmp != NULL) {
2963 * lock guy returned and lower count note
2964 * that we are not bound so inp_tmp should
2965 * NEVER be inp. And it is this inp
2966 * (inp_tmp) that gets the reference bump,
2967 * so we must lower it.
2969 SCTP_INP_DECR_REF(inp_tmp);
2971 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2972 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2974 * Ok, must be one-2-one and
2975 * allowing port re-use
2977 port_reuse_active = 1;
2978 goto continue_anyway;
2980 SCTP_INP_DECR_REF(inp);
2981 SCTP_INP_INFO_WUNLOCK();
2982 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2983 return (EADDRINUSE);
2987 SCTP_INP_WLOCK(inp);
2989 /* verify that no lport is not used by a singleton */
2990 if ((port_reuse_active == 0) &&
2991 (inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))) {
2992 /* Sorry someone already has this one bound */
2993 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2994 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2995 port_reuse_active = 1;
2997 SCTP_INP_DECR_REF(inp);
2998 SCTP_INP_WUNLOCK(inp);
2999 SCTP_INP_INFO_WUNLOCK();
3000 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3001 return (EADDRINUSE);
3006 uint16_t first, last, candidate;
3010 if (ip_inp->inp_flags & INP_HIGHPORT) {
3011 first = MODULE_GLOBAL(ipport_hifirstauto);
3012 last = MODULE_GLOBAL(ipport_hilastauto);
3013 } else if (ip_inp->inp_flags & INP_LOWPORT) {
3015 priv_check(p, PRIV_NETINET_RESERVEDPORT)
3017 SCTP_INP_DECR_REF(inp);
3018 SCTP_INP_WUNLOCK(inp);
3019 SCTP_INP_INFO_WUNLOCK();
3020 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
3023 first = MODULE_GLOBAL(ipport_lowfirstauto);
3024 last = MODULE_GLOBAL(ipport_lowlastauto);
3026 first = MODULE_GLOBAL(ipport_firstauto);
3027 last = MODULE_GLOBAL(ipport_lastauto);
3036 count = last - first + 1; /* number of candidates */
3037 candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count);
3041 if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) {
3046 SCTP_INP_DECR_REF(inp);
3047 SCTP_INP_WUNLOCK(inp);
3048 SCTP_INP_INFO_WUNLOCK();
3049 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3050 return (EADDRINUSE);
3052 if (candidate == last)
3055 candidate = candidate + 1;
3058 lport = htons(candidate);
3060 SCTP_INP_DECR_REF(inp);
3061 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE |
3062 SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
3064 * this really should not happen. The guy did a non-blocking
3065 * bind and then did a close at the same time.
3067 SCTP_INP_WUNLOCK(inp);
3068 SCTP_INP_INFO_WUNLOCK();
3069 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3072 /* ok we look clear to give out this port, so lets setup the binding */
3074 /* binding to all addresses, so just set in the proper flags */
3075 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL;
3076 /* set the automatic addr changes from kernel flag */
3077 if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) {
3078 sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3079 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3081 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3082 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3084 if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) {
3085 sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3087 sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3090 * set the automatic mobility_base from kernel flag (by
3093 if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) {
3094 sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE);
3095 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3097 sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE);
3098 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3101 * set the automatic mobility_fasthandoff from kernel flag
3104 if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) {
3105 sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF);
3106 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3108 sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF);
3109 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3113 * bind specific, make sure flags is off and add a new
3114 * address structure to the sctp_addr_list inside the ep
3117 * We will need to allocate one and insert it at the head.
3118 * The socketopt call can just insert new addresses in there
3119 * as well. It will also have to do the embed scope kame
3120 * hack too (before adding).
3122 struct sctp_ifa *ifa;
3123 union sctp_sockstore store;
3125 memset(&store, 0, sizeof(store));
3126 switch (addr->sa_family) {
3129 memcpy(&store.sin, addr, sizeof(struct sockaddr_in));
3130 store.sin.sin_port = 0;
3135 memcpy(&store.sin6, addr, sizeof(struct sockaddr_in6));
3136 store.sin6.sin6_port = 0;
3143 * first find the interface with the bound address need to
3144 * zero out the port to find the address! yuck! can't do
3145 * this earlier since need port for sctp_pcb_findep()
3147 if (sctp_ifap != NULL) {
3151 * Note for BSD we hit here always other O/S's will
3152 * pass things in via the sctp_ifap argument
3155 ifa = sctp_find_ifa_by_addr(&store.sa,
3156 vrf_id, SCTP_ADDR_NOT_LOCKED);
3159 /* Can't find an interface with that address */
3160 SCTP_INP_WUNLOCK(inp);
3161 SCTP_INP_INFO_WUNLOCK();
3162 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRNOTAVAIL);
3163 return (EADDRNOTAVAIL);
3166 if (addr->sa_family == AF_INET6) {
3167 /* GAK, more FIXME IFA lock? */
3168 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
3169 /* Can't bind a non-existent addr. */
3170 SCTP_INP_WUNLOCK(inp);
3171 SCTP_INP_INFO_WUNLOCK();
3172 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3177 /* we're not bound all */
3178 inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL;
3179 /* allow bindx() to send ASCONF's for binding changes */
3180 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3181 /* clear automatic addr changes from kernel flag */
3182 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3184 /* add this address to the endpoint list */
3185 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0);
3187 SCTP_INP_WUNLOCK(inp);
3188 SCTP_INP_INFO_WUNLOCK();
3193 /* find the bucket */
3194 if (port_reuse_active) {
3195 /* Put it into tcp 1-2-1 hash */
3196 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))];
3197 inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
3199 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))];
3201 /* put it in the bucket */
3202 LIST_INSERT_HEAD(head, inp, sctp_hash);
3203 SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n",
3204 (void *)head, ntohs(lport), port_reuse_active);
3205 /* set in the port */
3206 inp->sctp_lport = lport;
3208 /* turn off just the unbound flag */
3209 inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
3210 SCTP_INP_WUNLOCK(inp);
3211 SCTP_INP_INFO_WUNLOCK();
3217 sctp_iterator_inp_being_freed(struct sctp_inpcb *inp)
3219 struct sctp_iterator *it, *nit;
3222 * We enter with the only the ITERATOR_LOCK in place and a write
3223 * lock on the inp_info stuff.
3225 it = sctp_it_ctl.cur_it;
3226 if (it && (it->vn != curvnet)) {
3227 /* Its not looking at our VNET */
3230 if (it && (it->inp == inp)) {
3232 * This is tricky and we hold the iterator lock, but when it
3233 * returns and gets the lock (when we release it) the
3234 * iterator will try to operate on inp. We need to stop that
3235 * from happening. But of course the iterator has a
3236 * reference on the stcb and inp. We can mark it and it will
3239 * If its a single iterator situation, we set the end
3240 * iterator flag. Otherwise we set the iterator to go to the
3244 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3245 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
3247 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_INP;
3251 * Now go through and remove any single reference to our inp that
3252 * may be still pending on the list
3254 SCTP_IPI_ITERATOR_WQ_LOCK();
3255 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
3256 if (it->vn != curvnet) {
3259 if (it->inp == inp) {
3260 /* This one points to me is it inp specific? */
3261 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3262 /* Remove and free this one */
3263 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
3265 if (it->function_atend != NULL) {
3266 (*it->function_atend) (it->pointer, it->val);
3268 SCTP_FREE(it, SCTP_M_ITER);
3270 it->inp = LIST_NEXT(it->inp, sctp_list);
3272 SCTP_INP_INCR_REF(it->inp);
3276 * When its put in the refcnt is incremented so decr
3279 SCTP_INP_DECR_REF(inp);
3282 SCTP_IPI_ITERATOR_WQ_UNLOCK();
3285 /* release sctp_inpcb unbind the port */
3287 sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
3290 * Here we free a endpoint. We must find it (if it is in the Hash
3291 * table) and remove it from there. Then we must also find it in the
3292 * overall list and remove it from there. After all removals are
3293 * complete then any timer has to be stopped. Then start the actual
3294 * freeing. a) Any local lists. b) Any associations. c) The hash of
3295 * all associations. d) finally the ep itself.
3297 struct sctp_tcb *asoc, *nasoc;
3298 struct sctp_laddr *laddr, *nladdr;
3299 struct inpcb *ip_pcb;
3301 int being_refed = 0;
3302 struct sctp_queued_to_read *sq, *nsq;
3304 sctp_sharedkey_t *shared_key, *nshared_key;
3307 #ifdef SCTP_LOG_CLOSING
3308 sctp_log_closing(inp, NULL, 0);
3310 SCTP_ITERATOR_LOCK();
3311 /* mark any iterators on the list or being processed */
3312 sctp_iterator_inp_being_freed(inp);
3313 SCTP_ITERATOR_UNLOCK();
3314 so = inp->sctp_socket;
3315 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
3316 /* been here before.. eeks.. get out of here */
3317 SCTP_PRINTF("This conflict in free SHOULD not be happening! from %d, imm %d\n", from, immediate);
3318 #ifdef SCTP_LOG_CLOSING
3319 sctp_log_closing(inp, NULL, 1);
3323 SCTP_ASOC_CREATE_LOCK(inp);
3324 SCTP_INP_INFO_WLOCK();
3326 SCTP_INP_WLOCK(inp);
3327 if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
3328 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP;
3329 /* socket is gone, so no more wakeups allowed */
3330 inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE;
3331 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
3332 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
3335 /* First time through we have the socket lock, after that no more. */
3336 sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL,
3337 SCTP_FROM_SCTP_PCB + SCTP_LOC_1);
3340 sctp_m_freem(inp->control);
3341 inp->control = NULL;
3344 sctp_m_freem(inp->pkt);
3347 ip_pcb = &inp->ip_inp.inp; /* we could just cast the main pointer
3348 * here but I will be nice :> (i.e.
3350 if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
3354 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3355 SCTP_TCB_LOCK(asoc);
3356 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3357 /* Skip guys being freed */
3359 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3361 * Special case - we did not start a
3362 * kill timer on the asoc due to it
3363 * was not closed. So go ahead and
3366 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3367 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3369 SCTP_TCB_UNLOCK(asoc);
3372 if (((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_WAIT) ||
3373 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_ECHOED)) &&
3374 (asoc->asoc.total_output_queue_size == 0)) {
3376 * If we have data in queue, we don't want
3377 * to just free since the app may have done,
3378 * send()/close or connect/send/close. And
3379 * it wants the data to get across first.
3381 /* Just abandon things in the front states */
3382 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE,
3383 SCTP_FROM_SCTP_PCB + SCTP_LOC_2) == 0) {
3388 /* Disconnect the socket please */
3389 asoc->sctp_socket = NULL;
3390 asoc->asoc.state |= SCTP_STATE_CLOSED_SOCKET;
3391 if ((asoc->asoc.size_on_reasm_queue > 0) ||
3392 (asoc->asoc.control_pdapi) ||
3393 (asoc->asoc.size_on_all_streams > 0) ||
3394 (so && (so->so_rcv.sb_cc > 0))) {
3395 /* Left with Data unread */
3396 struct mbuf *op_err;
3398 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3399 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_3;
3400 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3401 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3402 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3403 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3404 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3406 if (sctp_free_assoc(inp, asoc,
3407 SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_4) == 0) {
3411 } else if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3412 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3413 (asoc->asoc.stream_queue_cnt == 0)) {
3414 if ((*asoc->asoc.ss_functions.sctp_ss_is_user_msgs_incomplete) (asoc, &asoc->asoc)) {
3417 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
3418 (SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
3419 struct sctp_nets *netp;
3422 * there is nothing queued to send,
3423 * so I send shutdown
3425 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3426 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3427 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3429 SCTP_SET_STATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_SENT);
3430 SCTP_CLEAR_SUBSTATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_PENDING);
3431 sctp_stop_timers_for_shutdown(asoc);
3432 if (asoc->asoc.alternate) {
3433 netp = asoc->asoc.alternate;
3435 netp = asoc->asoc.primary_destination;
3437 sctp_send_shutdown(asoc, netp);
3438 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, asoc->sctp_ep, asoc,
3440 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3441 asoc->asoc.primary_destination);
3442 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED);
3445 /* mark into shutdown pending */
3446 asoc->asoc.state |= SCTP_STATE_SHUTDOWN_PENDING;
3447 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3448 asoc->asoc.primary_destination);
3449 if ((*asoc->asoc.ss_functions.sctp_ss_is_user_msgs_incomplete) (asoc, &asoc->asoc)) {
3450 asoc->asoc.state |= SCTP_STATE_PARTIAL_MSG_LEFT;
3452 if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3453 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3454 (asoc->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
3455 struct mbuf *op_err;
3458 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3459 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_5;
3460 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3461 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3462 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3463 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3464 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3466 if (sctp_free_assoc(inp, asoc,
3467 SCTP_PCBFREE_NOFORCE,
3468 SCTP_FROM_SCTP_PCB + SCTP_LOC_6) == 0) {
3473 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
3477 SCTP_TCB_UNLOCK(asoc);
3479 /* now is there some left in our SHUTDOWN state? */
3481 #ifdef SCTP_LOG_CLOSING
3482 sctp_log_closing(inp, NULL, 2);
3484 inp->sctp_socket = NULL;
3485 SCTP_INP_WUNLOCK(inp);
3486 SCTP_ASOC_CREATE_UNLOCK(inp);
3487 SCTP_INP_INFO_WUNLOCK();
3491 inp->sctp_socket = NULL;
3492 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) !=
3493 SCTP_PCB_FLAGS_UNBOUND) {
3495 * ok, this guy has been bound. It's port is somewhere in
3496 * the SCTP_BASE_INFO(hash table). Remove it!
3498 LIST_REMOVE(inp, sctp_hash);
3499 inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND;
3502 * If there is a timer running to kill us, forget it, since it may
3503 * have a contest on the INP lock.. which would cause us to die ...
3506 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3507 SCTP_TCB_LOCK(asoc);
3508 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3509 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3510 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3511 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3514 SCTP_TCB_UNLOCK(asoc);
3517 /* Free associations that are NOT killing us */
3518 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_COOKIE_WAIT) &&
3519 ((asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) {
3520 struct mbuf *op_err;
3522 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3523 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_7;
3524 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3525 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3526 } else if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3528 SCTP_TCB_UNLOCK(asoc);
3531 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3532 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3533 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3535 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_FORCE,
3536 SCTP_FROM_SCTP_PCB + SCTP_LOC_8) == 0) {
3541 /* Ok we have someone out there that will kill us */
3542 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3543 #ifdef SCTP_LOG_CLOSING
3544 sctp_log_closing(inp, NULL, 3);
3546 SCTP_INP_WUNLOCK(inp);
3547 SCTP_ASOC_CREATE_UNLOCK(inp);
3548 SCTP_INP_INFO_WUNLOCK();
3551 if (SCTP_INP_LOCK_CONTENDED(inp))
3553 if (SCTP_INP_READ_CONTENDED(inp))
3555 if (SCTP_ASOC_CREATE_LOCK_CONTENDED(inp))
3558 if ((inp->refcount) ||
3560 (inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) {
3561 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3562 #ifdef SCTP_LOG_CLOSING
3563 sctp_log_closing(inp, NULL, 4);
3565 sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
3566 SCTP_INP_WUNLOCK(inp);
3567 SCTP_ASOC_CREATE_UNLOCK(inp);
3568 SCTP_INP_INFO_WUNLOCK();
3571 inp->sctp_ep.signature_change.type = 0;
3572 inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE;
3574 * Remove it from the list .. last thing we need a lock for.
3576 LIST_REMOVE(inp, sctp_list);
3577 SCTP_INP_WUNLOCK(inp);
3578 SCTP_ASOC_CREATE_UNLOCK(inp);
3579 SCTP_INP_INFO_WUNLOCK();
3581 * Now we release all locks. Since this INP cannot be found anymore
3582 * except possibly by the kill timer that might be running. We call
3583 * the drain function here. It should hit the case were it sees the
3584 * ACTIVE flag cleared and exit out freeing us to proceed and
3585 * destroy everything.
3587 if (from != SCTP_CALLED_FROM_INPKILL_TIMER) {
3588 (void)SCTP_OS_TIMER_STOP_DRAIN(&inp->sctp_ep.signature_change.timer);
3590 /* Probably un-needed */
3591 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3594 #ifdef SCTP_LOG_CLOSING
3595 sctp_log_closing(inp, NULL, 5);
3599 if ((inp->sctp_asocidhash) != NULL) {
3600 SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark);
3601 inp->sctp_asocidhash = NULL;
3603 /* sa_ignore FREED_MEMORY */
3604 TAILQ_FOREACH_SAFE(sq, &inp->read_queue, next, nsq) {
3605 /* Its only abandoned if it had data left */
3607 SCTP_STAT_INCR(sctps_left_abandon);
3609 TAILQ_REMOVE(&inp->read_queue, sq, next);
3610 sctp_free_remote_addr(sq->whoFrom);
3612 so->so_rcv.sb_cc -= sq->length;
3614 sctp_m_freem(sq->data);
3618 * no need to free the net count, since at this point all
3621 sctp_free_a_readq(NULL, sq);
3623 /* Now the sctp_pcb things */
3625 * free each asoc if it is not already closed/free. we can't use the
3626 * macro here since le_next will get freed as part of the
3627 * sctp_free_assoc() call.
3629 if (ip_pcb->inp_options) {
3630 (void)sctp_m_free(ip_pcb->inp_options);
3631 ip_pcb->inp_options = 0;
3634 if (ip_pcb->inp_vflag & INP_IPV6) {
3635 struct in6pcb *in6p;
3637 in6p = (struct in6pcb *)inp;
3638 ip6_freepcbopts(in6p->in6p_outputopts);
3641 ip_pcb->inp_vflag = 0;
3642 /* free up authentication fields */
3643 if (inp->sctp_ep.local_auth_chunks != NULL)
3644 sctp_free_chunklist(inp->sctp_ep.local_auth_chunks);
3645 if (inp->sctp_ep.local_hmacs != NULL)
3646 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3648 LIST_FOREACH_SAFE(shared_key, &inp->sctp_ep.shared_keys, next, nshared_key) {
3649 LIST_REMOVE(shared_key, next);
3650 sctp_free_sharedkey(shared_key);
3651 /* sa_ignore FREED_MEMORY */
3655 * if we have an address list the following will free the list of
3656 * ifaddr's that are set into this ep. Again macro limitations here,
3657 * since the LIST_FOREACH could be a bad idea.
3659 LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
3660 sctp_remove_laddr(laddr);
3663 #ifdef SCTP_TRACK_FREED_ASOCS
3665 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_free_list, sctp_tcblist, nasoc) {
3666 LIST_REMOVE(asoc, sctp_tcblist);
3667 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), asoc);
3668 SCTP_DECR_ASOC_COUNT();
3670 /* *** END TEMP CODE *** */
3672 /* Now lets see about freeing the EP hash table. */
3673 if (inp->sctp_tcbhash != NULL) {
3674 SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
3675 inp->sctp_tcbhash = NULL;
3677 /* Now we must put the ep memory back into the zone pool */
3678 crfree(inp->ip_inp.inp.inp_cred);
3679 INP_LOCK_DESTROY(&inp->ip_inp.inp);
3680 SCTP_INP_LOCK_DESTROY(inp);
3681 SCTP_INP_READ_DESTROY(inp);
3682 SCTP_ASOC_CREATE_LOCK_DESTROY(inp);
3683 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
3684 SCTP_DECR_EP_COUNT();
3689 sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
3691 struct sctp_nets *net;
3693 /* locate the address */
3694 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3695 if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr))
3703 sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
3705 struct sctp_ifa *sctp_ifa;
3707 sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED);
3716 * add's a remote endpoint address, done with the INIT/INIT-ACK as well as
3717 * when a ASCONF arrives that adds it. It will also initialize all the cwnd
3721 sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
3722 struct sctp_nets **netp, uint16_t port, int set_scope, int from)
3725 * The following is redundant to the same lines in the
3726 * sctp_aloc_assoc() but is needed since others call the add address
3729 struct sctp_nets *net, *netfirst;
3732 SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ",
3734 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr);
3736 netfirst = sctp_findnet(stcb, newaddr);
3739 * Lie and return ok, we don't want to make the association
3740 * go away for this behavior. It will happen in the TCP
3741 * model in a connected socket. It does not reach the hash
3742 * table until after the association is built so it can't be
3743 * found. Mark as reachable, since the initial creation will
3744 * have been cleared and the NOT_IN_ASSOC flag will have
3745 * been added... and we don't want to end up removing it
3748 if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) {
3749 netfirst->dest_state = (SCTP_ADDR_REACHABLE |
3750 SCTP_ADDR_UNCONFIRMED);
3752 netfirst->dest_state = SCTP_ADDR_REACHABLE;
3758 switch (newaddr->sa_family) {
3762 struct sockaddr_in *sin;
3764 sin = (struct sockaddr_in *)newaddr;
3765 if (sin->sin_addr.s_addr == 0) {
3766 /* Invalid address */
3769 /* zero out the bzero area */
3770 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
3772 /* assure len is set */
3773 sin->sin_len = sizeof(struct sockaddr_in);
3775 if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
3776 stcb->asoc.scope.ipv4_local_scope = 1;
3779 /* Validate the address is in scope */
3780 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) &&
3781 (stcb->asoc.scope.ipv4_local_scope == 0)) {
3791 struct sockaddr_in6 *sin6;
3793 sin6 = (struct sockaddr_in6 *)newaddr;
3794 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3795 /* Invalid address */
3798 /* assure len is set */
3799 sin6->sin6_len = sizeof(struct sockaddr_in6);
3801 if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) {
3802 stcb->asoc.scope.loopback_scope = 1;
3803 stcb->asoc.scope.local_scope = 0;
3804 stcb->asoc.scope.ipv4_local_scope = 1;
3805 stcb->asoc.scope.site_scope = 1;
3806 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
3808 * If the new destination is a
3809 * LINK_LOCAL we must have common
3810 * site scope. Don't set the local
3811 * scope since we may not share all
3812 * links, only loopback can do this.
3813 * Links on the local network would
3814 * also be on our private network
3817 stcb->asoc.scope.ipv4_local_scope = 1;
3818 stcb->asoc.scope.site_scope = 1;
3819 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
3821 * If the new destination is
3822 * SITE_LOCAL then we must have site
3825 stcb->asoc.scope.site_scope = 1;
3828 /* Validate the address is in scope */
3829 if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) &&
3830 (stcb->asoc.scope.loopback_scope == 0)) {
3832 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
3833 (stcb->asoc.scope.local_scope == 0)) {
3835 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
3836 (stcb->asoc.scope.site_scope == 0)) {
3844 /* not supported family type */
3847 net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets);
3851 SCTP_INCR_RADDR_COUNT();
3852 bzero(net, sizeof(struct sctp_nets));
3853 (void)SCTP_GETTIME_TIMEVAL(&net->start_time);
3854 memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len);
3855 switch (newaddr->sa_family) {
3858 ((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport;
3863 ((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport;
3869 net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id);
3870 if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) {
3871 stcb->asoc.scope.loopback_scope = 1;
3872 stcb->asoc.scope.ipv4_local_scope = 1;
3873 stcb->asoc.scope.local_scope = 0;
3874 stcb->asoc.scope.site_scope = 1;
3877 net->failure_threshold = stcb->asoc.def_net_failure;
3878 net->pf_threshold = stcb->asoc.def_net_pf_threshold;
3879 if (addr_inscope == 0) {
3880 net->dest_state = (SCTP_ADDR_REACHABLE |
3881 SCTP_ADDR_OUT_OF_SCOPE);
3883 if (from == SCTP_ADDR_IS_CONFIRMED)
3884 /* SCTP_ADDR_IS_CONFIRMED is passed by connect_x */
3885 net->dest_state = SCTP_ADDR_REACHABLE;
3887 net->dest_state = SCTP_ADDR_REACHABLE |
3888 SCTP_ADDR_UNCONFIRMED;
3891 * We set this to 0, the timer code knows that this means its an
3894 net->rto_needed = 1;
3896 net->RTO_measured = 0;
3897 stcb->asoc.numnets++;
3899 net->cwr_window_tsn = net->last_cwr_tsn = stcb->asoc.sending_seq - 1;
3901 net->dscp = stcb->asoc.default_dscp;
3903 net->flowlabel = stcb->asoc.default_flowlabel;
3905 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
3906 net->dest_state |= SCTP_ADDR_NOHB;
3908 net->dest_state &= ~SCTP_ADDR_NOHB;
3910 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DO_NOT_PMTUD)) {
3911 net->dest_state |= SCTP_ADDR_NO_PMTUD;
3913 net->dest_state &= ~SCTP_ADDR_NO_PMTUD;
3915 net->heart_beat_delay = stcb->asoc.heart_beat_delay;
3916 /* Init the timer structure */
3917 SCTP_OS_TIMER_INIT(&net->rxt_timer.timer);
3918 SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer);
3919 SCTP_OS_TIMER_INIT(&net->hb_timer.timer);
3921 /* Now generate a route for this guy */
3923 /* KAME hack: embed scopeid */
3924 if (newaddr->sa_family == AF_INET6) {
3925 struct sockaddr_in6 *sin6;
3927 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3928 (void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone));
3929 sin6->sin6_scope_id = 0;
3932 SCTP_RTALLOC((sctp_route_t *)&net->ro,
3934 stcb->sctp_ep->fibnum);
3936 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) {
3937 /* Get source address */
3938 net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep,
3940 (sctp_route_t *)&net->ro,
3944 if (net->ro._s_addr != NULL) {
3945 net->src_addr_selected = 1;
3946 /* Now get the interface MTU */
3947 if (net->ro._s_addr->ifn_p != NULL) {
3948 net->mtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p);
3951 net->src_addr_selected = 0;
3956 rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_rt);
3959 * Start things off to match mtu of
3962 SCTP_SET_MTU_OF_ROUTE(&net->ro._l_addr.sa,
3963 net->ro.ro_rt, net->mtu);
3966 * we take the route mtu over the interface,
3967 * since the route may be leading out the
3968 * loopback, or a different interface.
3974 net->src_addr_selected = 0;
3976 if (net->mtu == 0) {
3977 switch (newaddr->sa_family) {
3980 net->mtu = SCTP_DEFAULT_MTU;
3992 #if defined(INET) || defined(INET6)
3994 net->mtu -= (uint32_t)sizeof(struct udphdr);
3997 if (from == SCTP_ALLOC_ASOC) {
3998 stcb->asoc.smallest_mtu = net->mtu;
4000 if (stcb->asoc.smallest_mtu > net->mtu) {
4001 sctp_pathmtu_adjustment(stcb, net->mtu);
4004 if (newaddr->sa_family == AF_INET6) {
4005 struct sockaddr_in6 *sin6;
4007 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
4008 (void)sa6_recoverscope(sin6);
4012 /* JRS - Use the congestion control given in the CC module */
4013 if (stcb->asoc.cc_functions.sctp_set_initial_cc_param != NULL)
4014 (*stcb->asoc.cc_functions.sctp_set_initial_cc_param) (stcb, net);
4017 * CMT: CUC algo - set find_pseudo_cumack to TRUE (1) at beginning
4018 * of assoc (2005/06/27, iyengar@cis.udel.edu)
4020 net->find_pseudo_cumack = 1;
4021 net->find_rtx_pseudo_cumack = 1;
4022 /* Choose an initial flowid. */
4023 net->flowid = stcb->asoc.my_vtag ^
4024 ntohs(stcb->rport) ^
4025 ntohs(stcb->sctp_ep->sctp_lport);
4026 net->flowtype = M_HASHTYPE_OPAQUE_HASH;
4030 netfirst = TAILQ_FIRST(&stcb->asoc.nets);
4031 if (net->ro.ro_rt == NULL) {
4032 /* Since we have no route put it at the back */
4033 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4034 } else if (netfirst == NULL) {
4035 /* We are the first one in the pool. */
4036 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4037 } else if (netfirst->ro.ro_rt == NULL) {
4039 * First one has NO route. Place this one ahead of the first
4042 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4043 } else if (net->ro.ro_rt->rt_ifp != netfirst->ro.ro_rt->rt_ifp) {
4045 * This one has a different interface than the one at the
4046 * top of the list. Place it ahead.
4048 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4051 * Ok we have the same interface as the first one. Move
4052 * forward until we find either a) one with a NULL route...
4053 * insert ahead of that b) one with a different ifp.. insert
4054 * after that. c) end of the list.. insert at the tail.
4056 struct sctp_nets *netlook;
4059 netlook = TAILQ_NEXT(netfirst, sctp_next);
4060 if (netlook == NULL) {
4061 /* End of the list */
4062 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4064 } else if (netlook->ro.ro_rt == NULL) {
4065 /* next one has NO route */
4066 TAILQ_INSERT_BEFORE(netfirst, net, sctp_next);
4068 } else if (netlook->ro.ro_rt->rt_ifp != net->ro.ro_rt->rt_ifp) {
4069 TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook,
4075 } while (netlook != NULL);
4078 /* got to have a primary set */
4079 if (stcb->asoc.primary_destination == 0) {
4080 stcb->asoc.primary_destination = net;
4081 } else if ((stcb->asoc.primary_destination->ro.ro_rt == NULL) &&
4083 ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
4084 /* No route to current primary adopt new primary */
4085 stcb->asoc.primary_destination = net;
4087 /* Validate primary is first */
4088 net = TAILQ_FIRST(&stcb->asoc.nets);
4089 if ((net != stcb->asoc.primary_destination) &&
4090 (stcb->asoc.primary_destination)) {
4092 * first one on the list is NOT the primary sctp_cmpaddr()
4093 * is much more efficient if the primary is the first on the
4096 TAILQ_REMOVE(&stcb->asoc.nets,
4097 stcb->asoc.primary_destination, sctp_next);
4098 TAILQ_INSERT_HEAD(&stcb->asoc.nets,
4099 stcb->asoc.primary_destination, sctp_next);
4106 sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
4109 struct sctpasochead *head;
4110 struct sctp_tcb *lstcb;
4112 SCTP_INP_WLOCK(inp);
4114 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
4116 SCTP_INP_WUNLOCK(inp);
4120 * We don't allow assoc id to be one of SCTP_FUTURE_ASSOC,
4121 * SCTP_CURRENT_ASSOC and SCTP_ALL_ASSOC.
4123 if (inp->sctp_associd_counter <= SCTP_ALL_ASSOC) {
4124 inp->sctp_associd_counter = SCTP_ALL_ASSOC + 1;
4126 id = inp->sctp_associd_counter;
4127 inp->sctp_associd_counter++;
4128 lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t)id, 0);
4132 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
4133 LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash);
4134 stcb->asoc.in_asocid_hash = 1;
4135 SCTP_INP_WUNLOCK(inp);
4140 * allocate an association and add it to the endpoint. The caller must be
4141 * careful to add all additional addresses once they are know right away or
4142 * else the assoc will be may experience a blackout scenario.
4145 sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
4146 int *error, uint32_t override_tag, uint32_t vrf_id,
4147 uint16_t o_streams, uint16_t port,
4151 /* note the p argument is only valid in unbound sockets */
4153 struct sctp_tcb *stcb;
4154 struct sctp_association *asoc;
4155 struct sctpasochead *head;
4160 * Assumption made here: Caller has done a
4161 * sctp_findassociation_ep_addr(ep, addr's); to make sure the
4162 * address does not exist already.
4164 if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) {
4165 /* Hit max assoc, sorry no more */
4166 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4170 if (firstaddr == NULL) {
4171 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4175 SCTP_INP_RLOCK(inp);
4176 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
4177 ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) ||
4178 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4180 * If its in the TCP pool, its NOT allowed to create an
4181 * association. The parent listener needs to call
4182 * sctp_aloc_assoc.. or the one-2-many socket. If a peeled
4183 * off, or connected one does this.. its an error.
4185 SCTP_INP_RUNLOCK(inp);
4186 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4190 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
4191 (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)) {
4192 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) ||
4193 (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED)) {
4194 SCTP_INP_RUNLOCK(inp);
4195 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4200 SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:");
4203 SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr);
4204 switch (firstaddr->sa_family) {
4207 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4208 ntohs(((struct sockaddr_in *)firstaddr)->sin_port));
4213 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4214 ntohs(((struct sockaddr_in6 *)firstaddr)->sin6_port));
4221 SCTPDBG(SCTP_DEBUG_PCB3, "None\n");
4223 #endif /* SCTP_DEBUG */
4224 switch (firstaddr->sa_family) {
4228 struct sockaddr_in *sin;
4230 sin = (struct sockaddr_in *)firstaddr;
4231 if ((ntohs(sin->sin_port) == 0) ||
4232 (sin->sin_addr.s_addr == INADDR_ANY) ||
4233 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
4234 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
4235 /* Invalid address */
4236 SCTP_INP_RUNLOCK(inp);
4237 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4241 rport = sin->sin_port;
4248 struct sockaddr_in6 *sin6;
4250 sin6 = (struct sockaddr_in6 *)firstaddr;
4251 if ((ntohs(sin6->sin6_port) == 0) ||
4252 IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
4253 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
4254 /* Invalid address */
4255 SCTP_INP_RUNLOCK(inp);
4256 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4260 rport = sin6->sin6_port;
4265 /* not supported family type */
4266 SCTP_INP_RUNLOCK(inp);
4267 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4271 SCTP_INP_RUNLOCK(inp);
4272 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4274 * If you have not performed a bind, then we need to do the
4275 * ephemeral bind for you.
4277 if ((err = sctp_inpcb_bind(inp->sctp_socket,
4278 (struct sockaddr *)NULL,
4279 (struct sctp_ifa *)NULL,
4282 /* bind error, probably perm */
4287 stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb);
4289 /* out of memory? */
4290 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
4294 SCTP_INCR_ASOC_COUNT();
4296 bzero(stcb, sizeof(*stcb));
4299 asoc->assoc_id = sctp_aloc_a_assoc_id(inp, stcb);
4300 SCTP_TCB_LOCK_INIT(stcb);
4301 SCTP_TCB_SEND_LOCK_INIT(stcb);
4302 stcb->rport = rport;
4303 /* setup back pointer's */
4304 stcb->sctp_ep = inp;
4305 stcb->sctp_socket = inp->sctp_socket;
4306 if ((err = sctp_init_asoc(inp, stcb, override_tag, vrf_id, o_streams))) {
4308 SCTP_TCB_LOCK_DESTROY(stcb);
4309 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4310 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4311 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4312 SCTP_DECR_ASOC_COUNT();
4317 SCTP_INP_INFO_WLOCK();
4318 SCTP_INP_WLOCK(inp);
4319 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
4320 /* inpcb freed while alloc going on */
4321 SCTP_TCB_LOCK_DESTROY(stcb);
4322 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4323 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4324 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4325 SCTP_INP_WUNLOCK(inp);
4326 SCTP_INP_INFO_WUNLOCK();
4327 SCTP_DECR_ASOC_COUNT();
4328 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4332 SCTP_TCB_LOCK(stcb);
4334 /* now that my_vtag is set, add it to the hash */
4335 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))];
4336 /* put it in the bucket in the vtag hash of assoc's for the system */
4337 LIST_INSERT_HEAD(head, stcb, sctp_asocs);
4338 SCTP_INP_INFO_WUNLOCK();
4340 if ((err = sctp_add_remote_addr(stcb, firstaddr, NULL, port, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC))) {
4341 /* failure.. memory error? */
4342 if (asoc->strmout) {
4343 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4344 asoc->strmout = NULL;
4346 if (asoc->mapping_array) {
4347 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4348 asoc->mapping_array = NULL;
4350 if (asoc->nr_mapping_array) {
4351 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4352 asoc->nr_mapping_array = NULL;
4354 SCTP_DECR_ASOC_COUNT();
4355 SCTP_TCB_UNLOCK(stcb);
4356 SCTP_TCB_LOCK_DESTROY(stcb);
4357 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4358 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4359 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4360 SCTP_INP_WUNLOCK(inp);
4361 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4365 /* Init all the timers */
4366 SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer);
4367 SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer);
4368 SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer);
4369 SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer);
4370 SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer);
4371 SCTP_OS_TIMER_INIT(&asoc->delayed_event_timer.timer);
4372 SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer);
4374 LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist);
4375 /* now file the port under the hash as well */
4376 if (inp->sctp_tcbhash != NULL) {
4377 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport,
4378 inp->sctp_hashmark)];
4379 LIST_INSERT_HEAD(head, stcb, sctp_tcbhash);
4381 SCTP_INP_WUNLOCK(inp);
4382 SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", (void *)stcb);
4388 sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
4390 struct sctp_association *asoc;
4394 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4395 if (net == asoc->primary_destination) {
4397 struct sctp_nets *lnet;
4399 lnet = TAILQ_FIRST(&asoc->nets);
4401 * Mobility adaptation Ideally, if deleted destination is
4402 * the primary, it becomes a fast retransmission trigger by
4403 * the subsequent SET PRIMARY. (by micchie)
4405 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
4406 SCTP_MOBILITY_BASE) ||
4407 sctp_is_mobility_feature_on(stcb->sctp_ep,
4408 SCTP_MOBILITY_FASTHANDOFF)) {
4409 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n");
4410 if (asoc->deleted_primary != NULL) {
4411 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n");
4414 asoc->deleted_primary = net;
4415 atomic_add_int(&net->ref_count, 1);
4416 memset(&net->lastsa, 0, sizeof(net->lastsa));
4417 memset(&net->lastsv, 0, sizeof(net->lastsv));
4418 sctp_mobility_feature_on(stcb->sctp_ep,
4419 SCTP_MOBILITY_PRIM_DELETED);
4420 sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED,
4421 stcb->sctp_ep, stcb, NULL);
4424 /* Try to find a confirmed primary */
4425 asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0);
4427 if (net == asoc->last_data_chunk_from) {
4429 asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets);
4431 if (net == asoc->last_control_chunk_from) {
4433 asoc->last_control_chunk_from = NULL;
4435 if (net == stcb->asoc.alternate) {
4436 sctp_free_remote_addr(stcb->asoc.alternate);
4437 stcb->asoc.alternate = NULL;
4439 sctp_free_remote_addr(net);
4443 * remove a remote endpoint address from an association, it will fail if the
4444 * address does not exist.
4447 sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
4450 * Here we need to remove a remote address. This is quite simple, we
4451 * first find it in the list of address for the association
4452 * (tasoc->asoc.nets) and then if it is there, we do a LIST_REMOVE
4453 * on that item. Note we do not allow it to be removed if there are
4454 * no other addresses.
4456 struct sctp_association *asoc;
4457 struct sctp_nets *net, *nnet;
4461 /* locate the address */
4462 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
4463 if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) {
4466 if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr,
4468 /* we found the guy */
4469 if (asoc->numnets < 2) {
4470 /* Must have at LEAST two remote addresses */
4473 sctp_remove_net(stcb, net);
4483 sctp_delete_from_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4485 struct sctpvtaghead *chain;
4486 struct sctp_tagblock *twait_block;
4490 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4491 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4492 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4493 if ((twait_block->vtag_block[i].v_tag == tag) &&
4494 (twait_block->vtag_block[i].lport == lport) &&
4495 (twait_block->vtag_block[i].rport == rport)) {
4496 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4497 twait_block->vtag_block[i].v_tag = 0;
4498 twait_block->vtag_block[i].lport = 0;
4499 twait_block->vtag_block[i].rport = 0;
4510 sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4512 struct sctpvtaghead *chain;
4513 struct sctp_tagblock *twait_block;
4517 SCTP_INP_INFO_WLOCK();
4518 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4519 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4520 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4521 if ((twait_block->vtag_block[i].v_tag == tag) &&
4522 (twait_block->vtag_block[i].lport == lport) &&
4523 (twait_block->vtag_block[i].rport == rport)) {
4531 SCTP_INP_INFO_WUNLOCK();
4537 sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport)
4539 struct sctpvtaghead *chain;
4540 struct sctp_tagblock *twait_block;
4548 (void)SCTP_GETTIME_TIMEVAL(&now);
4549 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4551 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4552 /* Block(s) present, lets find space, and expire on the fly */
4553 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4554 if ((twait_block->vtag_block[i].v_tag == 0) &&
4556 twait_block->vtag_block[i].tv_sec_at_expire =
4558 twait_block->vtag_block[i].v_tag = tag;
4559 twait_block->vtag_block[i].lport = lport;
4560 twait_block->vtag_block[i].rport = rport;
4562 } else if ((twait_block->vtag_block[i].v_tag) &&
4563 ((long)twait_block->vtag_block[i].tv_sec_at_expire < now.tv_sec)) {
4564 /* Audit expires this guy */
4565 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4566 twait_block->vtag_block[i].v_tag = 0;
4567 twait_block->vtag_block[i].lport = 0;
4568 twait_block->vtag_block[i].rport = 0;
4570 /* Reuse it for my new tag */
4571 twait_block->vtag_block[i].tv_sec_at_expire = now.tv_sec + time;
4572 twait_block->vtag_block[i].v_tag = tag;
4573 twait_block->vtag_block[i].lport = lport;
4574 twait_block->vtag_block[i].rport = rport;
4581 * We only do up to the block where we can place our
4587 /* Need to add a new block to chain */
4589 SCTP_MALLOC(twait_block, struct sctp_tagblock *,
4590 sizeof(struct sctp_tagblock), SCTP_M_TIMW);
4591 if (twait_block == NULL) {
4593 panic("Can not alloc tagblock");
4597 memset(twait_block, 0, sizeof(struct sctp_tagblock));
4598 LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock);
4599 twait_block->vtag_block[0].tv_sec_at_expire = now.tv_sec + time;
4600 twait_block->vtag_block[0].v_tag = tag;
4601 twait_block->vtag_block[0].lport = lport;
4602 twait_block->vtag_block[0].rport = rport;
4607 sctp_clean_up_stream(struct sctp_tcb *stcb, struct sctp_readhead *rh)
4609 struct sctp_tmit_chunk *chk, *nchk;
4610 struct sctp_queued_to_read *ctl, *nctl;
4612 TAILQ_FOREACH_SAFE(ctl, rh, next_instrm, nctl) {
4613 TAILQ_REMOVE(rh, ctl, next_instrm);
4615 if (ctl->on_read_q == 0) {
4616 sctp_free_remote_addr(ctl->whoFrom);
4618 sctp_m_freem(ctl->data);
4622 /* Reassembly free? */
4623 TAILQ_FOREACH_SAFE(chk, &ctl->reasm, sctp_next, nchk) {
4624 TAILQ_REMOVE(&ctl->reasm, chk, sctp_next);
4626 sctp_m_freem(chk->data);
4629 if (chk->holds_key_ref)
4630 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4631 sctp_free_remote_addr(chk->whoTo);
4632 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4633 SCTP_DECR_CHK_COUNT();
4634 /* sa_ignore FREED_MEMORY */
4637 * We don't free the address here since all the net's were
4640 if (ctl->on_read_q == 0) {
4641 sctp_free_a_readq(stcb, ctl);
4648 * Free the association after un-hashing the remote port. This
4649 * function ALWAYS returns holding NO LOCK on the stcb. It DOES
4650 * expect that the input to this function IS a locked TCB.
4651 * It will return 0, if it did NOT destroy the association (instead
4652 * it unlocks it. It will return NON-zero if it either destroyed the
4653 * association OR the association is already destroyed.
4656 sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
4659 struct sctp_association *asoc;
4660 struct sctp_nets *net, *nnet;
4661 struct sctp_laddr *laddr, *naddr;
4662 struct sctp_tmit_chunk *chk, *nchk;
4663 struct sctp_asconf_addr *aparam, *naparam;
4664 struct sctp_asconf_ack *aack, *naack;
4665 struct sctp_stream_reset_list *strrst, *nstrrst;
4666 struct sctp_queued_to_read *sq, *nsq;
4667 struct sctp_stream_queue_pending *sp, *nsp;
4668 sctp_sharedkey_t *shared_key, *nshared_key;
4671 /* first, lets purge the entry from the hash table. */
4673 #ifdef SCTP_LOG_CLOSING
4674 sctp_log_closing(inp, stcb, 6);
4676 if (stcb->asoc.state == 0) {
4677 #ifdef SCTP_LOG_CLOSING
4678 sctp_log_closing(inp, NULL, 7);
4680 /* there is no asoc, really TSNH :-0 */
4683 if (stcb->asoc.alternate) {
4684 sctp_free_remote_addr(stcb->asoc.alternate);
4685 stcb->asoc.alternate = NULL;
4688 if (stcb->freed_from_where == 0) {
4689 /* Only record the first place free happened from */
4690 stcb->freed_from_where = from_location;
4695 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4696 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4697 /* nothing around */
4700 so = inp->sctp_socket;
4703 * We used timer based freeing if a reader or writer is in the way.
4704 * So we first check if we are actually being called from a timer,
4705 * if so we abort early if a reader or writer is still in the way.
4707 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
4708 (from_inpcbfree == SCTP_NORMAL_PROC)) {
4710 * is it the timer driving us? if so are the reader/writers
4713 if (stcb->asoc.refcnt) {
4714 /* nope, reader or writer in the way */
4715 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4716 /* no asoc destroyed */
4717 SCTP_TCB_UNLOCK(stcb);
4718 #ifdef SCTP_LOG_CLOSING
4719 sctp_log_closing(inp, stcb, 8);
4724 /* now clean up any other timers */
4725 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4726 asoc->dack_timer.self = NULL;
4727 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4729 * For stream reset we don't blast this unless
4730 * it is a str-reset timer, it might be the
4731 * free-asoc timer which we DON'T want to
4734 if (asoc->strreset_timer.type == SCTP_TIMER_TYPE_STRRESET)
4735 asoc->strreset_timer.self = NULL;
4736 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4737 asoc->asconf_timer.self = NULL;
4738 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4739 asoc->autoclose_timer.self = NULL;
4740 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4741 asoc->shut_guard_timer.self = NULL;
4742 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4743 asoc->delayed_event_timer.self = NULL;
4744 /* Mobility adaptation */
4745 (void)SCTP_OS_TIMER_STOP(&asoc->delete_prim_timer.timer);
4746 asoc->delete_prim_timer.self = NULL;
4747 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4748 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4749 net->rxt_timer.self = NULL;
4750 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4751 net->pmtu_timer.self = NULL;
4752 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4753 net->hb_timer.self = NULL;
4755 /* Now the read queue needs to be cleaned up (only once) */
4756 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) {
4757 stcb->asoc.state |= SCTP_STATE_ABOUT_TO_BE_FREED;
4758 SCTP_INP_READ_LOCK(inp);
4759 TAILQ_FOREACH(sq, &inp->read_queue, next) {
4760 if (sq->stcb == stcb) {
4761 sq->do_not_ref_stcb = 1;
4762 sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
4764 * If there is no end, there never will be
4767 if (sq->end_added == 0) {
4768 /* Held for PD-API clear that. */
4769 sq->pdapi_aborted = 1;
4770 sq->held_length = 0;
4771 if (sctp_stcb_is_feature_on(inp, stcb, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) {
4773 * Need to add a PD-API
4774 * aborted indication.
4775 * Setting the control_pdapi
4776 * assures that it will be
4777 * added right after this
4782 stcb->asoc.control_pdapi = sq;
4783 strseq = (sq->sinfo_stream << 16) | (sq->mid & 0x0000ffff);
4784 sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION,
4786 SCTP_PARTIAL_DELIVERY_ABORTED,
4789 stcb->asoc.control_pdapi = NULL;
4792 /* Add an end to wake them */
4796 SCTP_INP_READ_UNLOCK(inp);
4797 if (stcb->block_entry) {
4798 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET);
4799 stcb->block_entry->error = ECONNRESET;
4800 stcb->block_entry = NULL;
4803 if ((stcb->asoc.refcnt) || (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE)) {
4805 * Someone holds a reference OR the socket is unaccepted
4808 if ((stcb->asoc.refcnt) ||
4809 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4810 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4811 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4812 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4814 SCTP_TCB_UNLOCK(stcb);
4815 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4816 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4817 /* nothing around */
4820 /* Wake any reader/writers */
4821 sctp_sorwakeup(inp, so);
4822 sctp_sowwakeup(inp, so);
4824 #ifdef SCTP_LOG_CLOSING
4825 sctp_log_closing(inp, stcb, 9);
4827 /* no asoc destroyed */
4830 #ifdef SCTP_LOG_CLOSING
4831 sctp_log_closing(inp, stcb, 10);
4834 * When I reach here, no others want to kill the assoc yet.. and I
4835 * own the lock. Now its possible an abort comes in when I do the
4836 * lock exchange below to grab all the locks to do the final take
4837 * out. to prevent this we increment the count, which will start a
4838 * timer and blow out above thus assuring us that we hold exclusive
4839 * killing of the asoc. Note that after getting back the TCB lock we
4840 * will go ahead and increment the counter back up and stop any
4841 * timer a passing stranger may have started :-S
4843 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4844 atomic_add_int(&stcb->asoc.refcnt, 1);
4846 SCTP_TCB_UNLOCK(stcb);
4847 SCTP_INP_INFO_WLOCK();
4848 SCTP_INP_WLOCK(inp);
4849 SCTP_TCB_LOCK(stcb);
4851 /* Double check the GONE flag */
4852 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4853 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4854 /* nothing around */
4857 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
4858 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4860 * For TCP type we need special handling when we are
4861 * connected. We also include the peel'ed off ones to.
4863 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4864 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED;
4865 inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED;
4868 if (so->so_rcv.sb_cc == 0) {
4869 so->so_state &= ~(SS_ISCONNECTING |
4870 SS_ISDISCONNECTING |
4874 socantrcvmore_locked(so);
4876 sctp_sowwakeup(inp, so);
4877 sctp_sorwakeup(inp, so);
4883 * Make it invalid too, that way if its about to run it will abort
4886 /* re-increment the lock */
4887 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4888 atomic_add_int(&stcb->asoc.refcnt, -1);
4890 if (stcb->asoc.refcnt) {
4891 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4892 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4893 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4894 SCTP_INP_INFO_WUNLOCK();
4895 SCTP_INP_WUNLOCK(inp);
4897 SCTP_TCB_UNLOCK(stcb);
4901 if (inp->sctp_tcbhash) {
4902 LIST_REMOVE(stcb, sctp_tcbhash);
4904 if (stcb->asoc.in_asocid_hash) {
4905 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4907 /* Now lets remove it from the list of ALL associations in the EP */
4908 LIST_REMOVE(stcb, sctp_tcblist);
4909 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4910 SCTP_INP_INCR_REF(inp);
4911 SCTP_INP_WUNLOCK(inp);
4913 /* pull from vtag hash */
4914 LIST_REMOVE(stcb, sctp_asocs);
4915 sctp_add_vtag_to_timewait(asoc->my_vtag, SCTP_BASE_SYSCTL(sctp_vtag_time_wait),
4916 inp->sctp_lport, stcb->rport);
4919 * Now restop the timers to be sure this is paranoia at is finest!
4921 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4922 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4923 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4924 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4925 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4926 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4927 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4928 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4929 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4930 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4931 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4934 asoc->strreset_timer.type = SCTP_TIMER_TYPE_NONE;
4936 * The chunk lists and such SHOULD be empty but we check them just
4939 /* anything on the wheel needs to be removed */
4940 for (i = 0; i < asoc->streamoutcnt; i++) {
4941 struct sctp_stream_out *outs;
4943 outs = &asoc->strmout[i];
4944 /* now clean up any chunks here */
4945 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
4946 atomic_subtract_int(&asoc->stream_queue_cnt, 1);
4947 TAILQ_REMOVE(&outs->outqueue, sp, next);
4948 stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, outs, sp, 0);
4949 sctp_free_spbufspace(stcb, asoc, sp);
4952 /* Still an open socket - report */
4953 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
4954 0, (void *)sp, SCTP_SO_LOCKED);
4957 sctp_m_freem(sp->data);
4959 sp->tail_mbuf = NULL;
4964 sctp_free_remote_addr(sp->net);
4967 sctp_free_a_strmoq(stcb, sp, SCTP_SO_LOCKED);
4970 /* sa_ignore FREED_MEMORY */
4971 TAILQ_FOREACH_SAFE(strrst, &asoc->resetHead, next_resp, nstrrst) {
4972 TAILQ_REMOVE(&asoc->resetHead, strrst, next_resp);
4973 SCTP_FREE(strrst, SCTP_M_STRESET);
4975 TAILQ_FOREACH_SAFE(sq, &asoc->pending_reply_queue, next, nsq) {
4976 TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
4978 sctp_m_freem(sq->data);
4981 sctp_free_remote_addr(sq->whoFrom);
4984 /* Free the ctl entry */
4985 sctp_free_a_readq(stcb, sq);
4986 /* sa_ignore FREED_MEMORY */
4988 TAILQ_FOREACH_SAFE(chk, &asoc->free_chunks, sctp_next, nchk) {
4989 TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next);
4991 sctp_m_freem(chk->data);
4994 if (chk->holds_key_ref)
4995 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4996 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4997 SCTP_DECR_CHK_COUNT();
4998 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1);
4999 asoc->free_chunk_cnt--;
5000 /* sa_ignore FREED_MEMORY */
5002 /* pending send queue SHOULD be empty */
5003 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
5004 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
5005 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
5008 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
5011 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
5014 /* Still a socket? */
5015 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
5016 0, chk, SCTP_SO_LOCKED);
5019 sctp_m_freem(chk->data);
5023 if (chk->holds_key_ref)
5024 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5026 sctp_free_remote_addr(chk->whoTo);
5029 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5030 SCTP_DECR_CHK_COUNT();
5031 /* sa_ignore FREED_MEMORY */
5033 /* sent queue SHOULD be empty */
5034 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
5035 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
5036 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
5037 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
5040 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
5044 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
5047 /* Still a socket? */
5048 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
5049 0, chk, SCTP_SO_LOCKED);
5052 sctp_m_freem(chk->data);
5056 if (chk->holds_key_ref)
5057 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5058 sctp_free_remote_addr(chk->whoTo);
5059 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5060 SCTP_DECR_CHK_COUNT();
5061 /* sa_ignore FREED_MEMORY */
5064 for (i = 0; i < stcb->asoc.streamoutcnt; i++) {
5065 if (stcb->asoc.strmout[i].chunks_on_queues > 0) {
5066 panic("%u chunks left for stream %u.", stcb->asoc.strmout[i].chunks_on_queues, i);
5070 /* control queue MAY not be empty */
5071 TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) {
5072 TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next);
5074 sctp_m_freem(chk->data);
5077 if (chk->holds_key_ref)
5078 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5079 sctp_free_remote_addr(chk->whoTo);
5080 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5081 SCTP_DECR_CHK_COUNT();
5082 /* sa_ignore FREED_MEMORY */
5084 /* ASCONF queue MAY not be empty */
5085 TAILQ_FOREACH_SAFE(chk, &asoc->asconf_send_queue, sctp_next, nchk) {
5086 TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next);
5088 sctp_m_freem(chk->data);
5091 if (chk->holds_key_ref)
5092 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5093 sctp_free_remote_addr(chk->whoTo);
5094 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5095 SCTP_DECR_CHK_COUNT();
5096 /* sa_ignore FREED_MEMORY */
5098 if (asoc->mapping_array) {
5099 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
5100 asoc->mapping_array = NULL;
5102 if (asoc->nr_mapping_array) {
5103 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
5104 asoc->nr_mapping_array = NULL;
5106 /* the stream outs */
5107 if (asoc->strmout) {
5108 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
5109 asoc->strmout = NULL;
5111 asoc->strm_realoutsize = asoc->streamoutcnt = 0;
5113 for (i = 0; i < asoc->streamincnt; i++) {
5114 sctp_clean_up_stream(stcb, &asoc->strmin[i].inqueue);
5115 sctp_clean_up_stream(stcb, &asoc->strmin[i].uno_inqueue);
5117 SCTP_FREE(asoc->strmin, SCTP_M_STRMI);
5118 asoc->strmin = NULL;
5120 asoc->streamincnt = 0;
5121 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
5123 if (SCTP_BASE_INFO(ipi_count_raddr) == 0) {
5124 panic("no net's left alloc'ed, or list points to itself");
5127 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
5128 sctp_free_remote_addr(net);
5130 LIST_FOREACH_SAFE(laddr, &asoc->sctp_restricted_addrs, sctp_nxt_addr, naddr) {
5131 /* sa_ignore FREED_MEMORY */
5132 sctp_remove_laddr(laddr);
5135 /* pending asconf (address) parameters */
5136 TAILQ_FOREACH_SAFE(aparam, &asoc->asconf_queue, next, naparam) {
5137 /* sa_ignore FREED_MEMORY */
5138 TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
5139 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
5141 TAILQ_FOREACH_SAFE(aack, &asoc->asconf_ack_sent, next, naack) {
5142 /* sa_ignore FREED_MEMORY */
5143 TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
5144 if (aack->data != NULL) {
5145 sctp_m_freem(aack->data);
5147 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
5149 /* clean up auth stuff */
5150 if (asoc->local_hmacs)
5151 sctp_free_hmaclist(asoc->local_hmacs);
5152 if (asoc->peer_hmacs)
5153 sctp_free_hmaclist(asoc->peer_hmacs);
5155 if (asoc->local_auth_chunks)
5156 sctp_free_chunklist(asoc->local_auth_chunks);
5157 if (asoc->peer_auth_chunks)
5158 sctp_free_chunklist(asoc->peer_auth_chunks);
5160 sctp_free_authinfo(&asoc->authinfo);
5162 LIST_FOREACH_SAFE(shared_key, &asoc->shared_keys, next, nshared_key) {
5163 LIST_REMOVE(shared_key, next);
5164 sctp_free_sharedkey(shared_key);
5165 /* sa_ignore FREED_MEMORY */
5168 /* Insert new items here :> */
5170 /* Get rid of LOCK */
5171 SCTP_TCB_UNLOCK(stcb);
5172 SCTP_TCB_LOCK_DESTROY(stcb);
5173 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
5174 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5175 SCTP_INP_INFO_WUNLOCK();
5176 SCTP_INP_RLOCK(inp);
5178 #ifdef SCTP_TRACK_FREED_ASOCS
5179 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5180 /* now clean up the tasoc itself */
5181 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5182 SCTP_DECR_ASOC_COUNT();
5184 LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist);
5187 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5188 SCTP_DECR_ASOC_COUNT();
5190 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5191 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5193 * If its NOT the inp_free calling us AND sctp_close
5194 * as been called, we call back...
5196 SCTP_INP_RUNLOCK(inp);
5198 * This will start the kill timer (if we are the
5199 * last one) since we hold an increment yet. But
5200 * this is the only safe way to do this since
5201 * otherwise if the socket closes at the same time
5202 * we are here we might collide in the cleanup.
5204 sctp_inpcb_free(inp,
5205 SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
5206 SCTP_CALLED_DIRECTLY_NOCMPSET);
5207 SCTP_INP_DECR_REF(inp);
5210 /* The socket is still open. */
5211 SCTP_INP_DECR_REF(inp);
5214 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5215 SCTP_INP_RUNLOCK(inp);
5218 /* destroyed the asoc */
5219 #ifdef SCTP_LOG_CLOSING
5220 sctp_log_closing(inp, NULL, 11);
5228 * determine if a destination is "reachable" based upon the addresses bound
5229 * to the current endpoint (e.g. only v4 or v6 currently bound)
5232 * FIX: if we allow assoc-level bindx(), then this needs to be fixed to use
5233 * assoc level v4/v6 flags, as the assoc *may* not have the same address
5234 * types bound as its endpoint
5237 sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
5239 struct sctp_inpcb *inp;
5243 * No locks here, the TCB, in all cases is already locked and an
5244 * assoc is up. There is either a INP lock by the caller applied (in
5245 * asconf case when deleting an address) or NOT in the HB case,
5246 * however if HB then the INP increment is up and the INP will not
5247 * be removed (on top of the fact that we have a TCB lock). So we
5248 * only want to read the sctp_flags, which is either bound-all or
5249 * not.. no protection needed since once an assoc is up you can't be
5250 * changing your binding.
5252 inp = stcb->sctp_ep;
5253 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5254 /* if bound all, destination is not restricted */
5256 * RRS: Question during lock work: Is this correct? If you
5257 * are bound-all you still might need to obey the V4--V6
5258 * flags??? IMO this bound-all stuff needs to be removed!
5262 /* NOTE: all "scope" checks are done when local addresses are added */
5263 switch (destaddr->sa_family) {
5266 answer = inp->ip_inp.inp.inp_vflag & INP_IPV6;
5271 answer = inp->ip_inp.inp.inp_vflag & INP_IPV4;
5275 /* invalid family, so it's unreachable */
5283 * update the inp_vflags on an endpoint
5286 sctp_update_ep_vflag(struct sctp_inpcb *inp)
5288 struct sctp_laddr *laddr;
5290 /* first clear the flag */
5291 inp->ip_inp.inp.inp_vflag = 0;
5292 /* set the flag based on addresses on the ep list */
5293 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5294 if (laddr->ifa == NULL) {
5295 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
5299 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
5302 switch (laddr->ifa->address.sa.sa_family) {
5305 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5310 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5320 * Add the address to the endpoint local address list There is nothing to be
5321 * done if we are bound to all addresses
5324 sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
5326 struct sctp_laddr *laddr;
5327 struct sctp_tcb *stcb;
5332 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5333 /* You are already bound to all. You have it already */
5337 if (ifa->address.sa.sa_family == AF_INET6) {
5338 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5339 /* Can't bind a non-useable addr. */
5344 /* first, is it already present? */
5345 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5346 if (laddr->ifa == ifa) {
5353 /* Not in the ep list */
5354 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action);
5358 /* update inp_vflag flags */
5359 switch (ifa->address.sa.sa_family) {
5362 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5367 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5373 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5374 sctp_add_local_addr_restricted(stcb, ifa);
5382 * select a new (hopefully reachable) destination net (should only be used
5383 * when we deleted an ep addr that is the only usable source address to reach
5384 * the destination net)
5387 sctp_select_primary_destination(struct sctp_tcb *stcb)
5389 struct sctp_nets *net;
5391 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5392 /* for now, we'll just pick the first reachable one we find */
5393 if (net->dest_state & SCTP_ADDR_UNCONFIRMED)
5395 if (sctp_destination_is_reachable(stcb,
5396 (struct sockaddr *)&net->ro._l_addr)) {
5397 /* found a reachable destination */
5398 stcb->asoc.primary_destination = net;
5401 /* I can't there from here! ...we're gonna die shortly... */
5406 * Delete the address from the endpoint local address list. There is nothing
5407 * to be done if we are bound to all addresses
5410 sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa)
5412 struct sctp_laddr *laddr;
5416 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5417 /* You are already bound to all. You have it already */
5420 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5421 if (laddr->ifa == ifa) {
5426 if (fnd && (inp->laddr_count < 2)) {
5427 /* can't delete unless there are at LEAST 2 addresses */
5432 * clean up any use of this address go through our
5433 * associations and clear any last_used_address that match
5434 * this one for each assoc, see if a new primary_destination
5437 struct sctp_tcb *stcb;
5439 /* clean up "next_addr_touse" */
5440 if (inp->next_addr_touse == laddr)
5441 /* delete this address */
5442 inp->next_addr_touse = NULL;
5444 /* clean up "last_used_address" */
5445 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5446 struct sctp_nets *net;
5448 SCTP_TCB_LOCK(stcb);
5449 if (stcb->asoc.last_used_address == laddr)
5450 /* delete this address */
5451 stcb->asoc.last_used_address = NULL;
5453 * Now spin through all the nets and purge any ref
5456 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5457 if (net->ro._s_addr == laddr->ifa) {
5458 /* Yep, purge src address selected */
5461 /* delete this address if cached */
5465 net->ro.ro_rt = NULL;
5467 sctp_free_ifa(net->ro._s_addr);
5468 net->ro._s_addr = NULL;
5469 net->src_addr_selected = 0;
5472 SCTP_TCB_UNLOCK(stcb);
5473 } /* for each tcb */
5474 /* remove it from the ep list */
5475 sctp_remove_laddr(laddr);
5477 /* update inp_vflag flags */
5478 sctp_update_ep_vflag(inp);
5484 * Add the address to the TCB local address restricted list.
5485 * This is a "pending" address list (eg. addresses waiting for an
5486 * ASCONF-ACK response) and cannot be used as a valid source address.
5489 sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5491 struct sctp_laddr *laddr;
5492 struct sctpladdr *list;
5495 * Assumes TCB is locked.. and possibly the INP. May need to
5496 * confirm/fix that if we need it and is not the case.
5498 list = &stcb->asoc.sctp_restricted_addrs;
5501 if (ifa->address.sa.sa_family == AF_INET6) {
5502 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5503 /* Can't bind a non-existent addr. */
5508 /* does the address already exist? */
5509 LIST_FOREACH(laddr, list, sctp_nxt_addr) {
5510 if (laddr->ifa == ifa) {
5515 /* add to the list */
5516 (void)sctp_insert_laddr(list, ifa, 0);
5521 * Remove a local address from the TCB local address restricted list
5524 sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5526 struct sctp_inpcb *inp;
5527 struct sctp_laddr *laddr;
5530 * This is called by asconf work. It is assumed that a) The TCB is
5531 * locked and b) The INP is locked. This is true in as much as I can
5532 * trace through the entry asconf code where I did these locks.
5533 * Again, the ASCONF code is a bit different in that it does lock
5534 * the INP during its work often times. This must be since we don't
5535 * want other proc's looking up things while what they are looking
5536 * up is changing :-D
5539 inp = stcb->sctp_ep;
5540 /* if subset bound and don't allow ASCONF's, can't delete last */
5541 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
5542 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
5543 if (stcb->sctp_ep->laddr_count < 2) {
5544 /* can't delete last address */
5548 LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
5549 /* remove the address if it exists */
5550 if (laddr->ifa == NULL)
5552 if (laddr->ifa == ifa) {
5553 sctp_remove_laddr(laddr);
5558 /* address not found! */
5563 * Temporarily remove for __APPLE__ until we use the Tiger equivalents
5566 static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;
5567 static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR;
5571 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5572 struct sctp_mcore_ctrl *sctp_mcore_workers = NULL;
5573 int *sctp_cpuarry = NULL;
5575 sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use)
5577 /* Queue a packet to a processor for the specified core */
5578 struct sctp_mcore_queue *qent;
5579 struct sctp_mcore_ctrl *wkq;
5582 if (sctp_mcore_workers == NULL) {
5583 /* Something went way bad during setup */
5584 sctp_input_with_port(m, off, 0);
5587 SCTP_MALLOC(qent, struct sctp_mcore_queue *,
5588 (sizeof(struct sctp_mcore_queue)),
5591 /* This is trouble */
5592 sctp_input_with_port(m, off, 0);
5599 wkq = &sctp_mcore_workers[cpu_to_use];
5600 SCTP_MCORE_QLOCK(wkq);
5602 TAILQ_INSERT_TAIL(&wkq->que, qent, next);
5603 if (wkq->running == 0) {
5606 SCTP_MCORE_QUNLOCK(wkq);
5608 wakeup(&wkq->running);
5613 sctp_mcore_thread(void *arg)
5616 struct sctp_mcore_ctrl *wkq;
5617 struct sctp_mcore_queue *qent;
5619 wkq = (struct sctp_mcore_ctrl *)arg;
5623 /* Wait for first tickle */
5624 SCTP_MCORE_LOCK(wkq);
5626 msleep(&wkq->running,
5628 0, "wait for pkt", 0);
5629 SCTP_MCORE_UNLOCK(wkq);
5631 /* Bind to our cpu */
5632 thread_lock(curthread);
5633 sched_bind(curthread, wkq->cpuid);
5634 thread_unlock(curthread);
5636 /* Now lets start working */
5637 SCTP_MCORE_LOCK(wkq);
5638 /* Now grab lock and go */
5640 SCTP_MCORE_QLOCK(wkq);
5643 qent = TAILQ_FIRST(&wkq->que);
5645 TAILQ_REMOVE(&wkq->que, qent, next);
5646 SCTP_MCORE_QUNLOCK(wkq);
5647 CURVNET_SET(qent->vn);
5651 SCTP_FREE(qent, SCTP_M_MCORE);
5653 sctp_input_with_port(m, off, 0);
5655 SCTP_PRINTF("V6 not yet supported\n");
5659 SCTP_MCORE_QLOCK(wkq);
5662 if (!TAILQ_EMPTY(&wkq->que)) {
5665 SCTP_MCORE_QUNLOCK(wkq);
5666 msleep(&wkq->running,
5668 0, "wait for pkt", 0);
5673 sctp_startup_mcore_threads(void)
5680 if (sctp_mcore_workers != NULL) {
5682 * Already been here in some previous vnet?
5686 SCTP_MALLOC(sctp_mcore_workers, struct sctp_mcore_ctrl *,
5687 ((mp_maxid + 1) * sizeof(struct sctp_mcore_ctrl)),
5689 if (sctp_mcore_workers == NULL) {
5693 memset(sctp_mcore_workers, 0, ((mp_maxid + 1) *
5694 sizeof(struct sctp_mcore_ctrl)));
5695 /* Init the structures */
5696 for (i = 0; i <= mp_maxid; i++) {
5697 TAILQ_INIT(&sctp_mcore_workers[i].que);
5698 SCTP_MCORE_LOCK_INIT(&sctp_mcore_workers[i]);
5699 SCTP_MCORE_QLOCK_INIT(&sctp_mcore_workers[i]);
5700 sctp_mcore_workers[i].cpuid = i;
5702 if (sctp_cpuarry == NULL) {
5703 SCTP_MALLOC(sctp_cpuarry, int *,
5704 (mp_ncpus * sizeof(int)),
5708 sctp_cpuarry[i] = cpu;
5712 /* Now start them all */
5714 (void)kproc_create(sctp_mcore_thread,
5715 (void *)&sctp_mcore_workers[cpu],
5716 &sctp_mcore_workers[cpu].thread_proc,
5729 * SCTP initialization for the PCB structures should be called by
5730 * the sctp_init() function.
5735 if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) {
5736 /* error I was called twice */
5739 SCTP_BASE_VAR(sctp_pcb_initialized) = 1;
5741 #if defined(SCTP_LOCAL_TRACE_BUF)
5742 bzero(&SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));
5744 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5745 SCTP_MALLOC(SCTP_BASE_STATS, struct sctpstat *,
5746 ((mp_maxid + 1) * sizeof(struct sctpstat)),
5749 (void)SCTP_GETTIME_TIMEVAL(&tv);
5750 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5751 bzero(SCTP_BASE_STATS, (sizeof(struct sctpstat) * (mp_maxid + 1)));
5752 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t)tv.tv_sec;
5753 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t)tv.tv_usec;
5755 bzero(&SCTP_BASE_STATS, sizeof(struct sctpstat));
5756 SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t)tv.tv_sec;
5757 SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t)tv.tv_usec;
5759 /* init the empty list of (All) Endpoints */
5760 LIST_INIT(&SCTP_BASE_INFO(listhead));
5763 /* init the hash table of endpoints */
5764 TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize));
5765 TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize));
5766 TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale));
5767 SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31),
5768 &SCTP_BASE_INFO(hashasocmark));
5769 SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5770 &SCTP_BASE_INFO(hashmark));
5771 SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5772 &SCTP_BASE_INFO(hashtcpmark));
5773 SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize);
5776 SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH,
5777 &SCTP_BASE_INFO(hashvrfmark));
5779 SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE,
5780 &SCTP_BASE_INFO(vrf_ifn_hashmark));
5781 /* init the zones */
5783 * FIX ME: Should check for NULL returns, but if it does fail we are
5784 * doomed to panic anyways... add later maybe.
5786 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep",
5787 sizeof(struct sctp_inpcb), maxsockets);
5789 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc",
5790 sizeof(struct sctp_tcb), sctp_max_number_of_assoc);
5792 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr",
5793 sizeof(struct sctp_laddr),
5794 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5796 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr",
5797 sizeof(struct sctp_nets),
5798 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5800 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk",
5801 sizeof(struct sctp_tmit_chunk),
5802 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5804 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq",
5805 sizeof(struct sctp_queued_to_read),
5806 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5808 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out",
5809 sizeof(struct sctp_stream_queue_pending),
5810 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5812 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf",
5813 sizeof(struct sctp_asconf),
5814 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5816 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack",
5817 sizeof(struct sctp_asconf_ack),
5818 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5821 /* Master Lock INIT for info structure */
5822 SCTP_INP_INFO_LOCK_INIT();
5823 SCTP_STATLOG_INIT_LOCK();
5825 SCTP_IPI_COUNT_INIT();
5826 SCTP_IPI_ADDR_INIT();
5827 #ifdef SCTP_PACKET_LOGGING
5828 SCTP_IP_PKTLOG_INIT();
5830 LIST_INIT(&SCTP_BASE_INFO(addr_wq));
5832 SCTP_WQ_ADDR_INIT();
5833 /* not sure if we need all the counts */
5834 SCTP_BASE_INFO(ipi_count_ep) = 0;
5835 /* assoc/tcb zone info */
5836 SCTP_BASE_INFO(ipi_count_asoc) = 0;
5837 /* local addrlist zone info */
5838 SCTP_BASE_INFO(ipi_count_laddr) = 0;
5839 /* remote addrlist zone info */
5840 SCTP_BASE_INFO(ipi_count_raddr) = 0;
5842 SCTP_BASE_INFO(ipi_count_chunk) = 0;
5844 /* socket queue zone info */
5845 SCTP_BASE_INFO(ipi_count_readq) = 0;
5847 /* stream out queue cont */
5848 SCTP_BASE_INFO(ipi_count_strmoq) = 0;
5850 SCTP_BASE_INFO(ipi_free_strmoq) = 0;
5851 SCTP_BASE_INFO(ipi_free_chunks) = 0;
5853 SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer));
5855 /* Init the TIMEWAIT list */
5856 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5857 LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]);
5859 sctp_startup_iterator();
5861 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5862 sctp_startup_mcore_threads();
5866 * INIT the default VRF which for BSD is the only one, other O/S's
5867 * may have more. But initially they must start with one and then
5868 * add the VRF's as addresses are added.
5870 sctp_init_vrf_list(SCTP_DEFAULT_VRF);
5874 * Assumes that the SCTP_BASE_INFO() lock is NOT held.
5877 sctp_pcb_finish(void)
5879 struct sctp_vrflist *vrf_bucket;
5880 struct sctp_vrf *vrf, *nvrf;
5881 struct sctp_ifn *ifn, *nifn;
5882 struct sctp_ifa *ifa, *nifa;
5883 struct sctpvtaghead *chain;
5884 struct sctp_tagblock *twait_block, *prev_twait_block;
5885 struct sctp_laddr *wi, *nwi;
5887 struct sctp_iterator *it, *nit;
5889 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
5890 SCTP_PRINTF("%s: race condition on teardown.\n", __func__);
5893 SCTP_BASE_VAR(sctp_pcb_initialized) = 0;
5895 * In FreeBSD the iterator thread never exits but we do clean up.
5896 * The only way FreeBSD reaches here is if we have VRF's but we
5897 * still add the ifdef to make it compile on old versions.
5900 SCTP_IPI_ITERATOR_WQ_LOCK();
5902 * sctp_iterator_worker() might be working on an it entry without
5903 * holding the lock. We won't find it on the list either and
5904 * continue and free/destroy it. While holding the lock, spin, to
5905 * avoid the race condition as sctp_iterator_worker() will have to
5906 * wait to re-aquire the lock.
5908 if (sctp_it_ctl.iterator_running != 0 || sctp_it_ctl.cur_it != NULL) {
5909 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5910 SCTP_PRINTF("%s: Iterator running while we held the lock. Retry. "
5911 "cur_it=%p\n", __func__, sctp_it_ctl.cur_it);
5915 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
5916 if (it->vn != curvnet) {
5919 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
5920 if (it->function_atend != NULL) {
5921 (*it->function_atend) (it->pointer, it->val);
5923 SCTP_FREE(it, SCTP_M_ITER);
5925 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5926 SCTP_ITERATOR_LOCK();
5927 if ((sctp_it_ctl.cur_it) &&
5928 (sctp_it_ctl.cur_it->vn == curvnet)) {
5929 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
5931 SCTP_ITERATOR_UNLOCK();
5932 SCTP_OS_TIMER_STOP_DRAIN(&SCTP_BASE_INFO(addr_wq_timer.timer));
5933 SCTP_WQ_ADDR_LOCK();
5934 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
5935 LIST_REMOVE(wi, sctp_nxt_addr);
5936 SCTP_DECR_LADDR_COUNT();
5937 if (wi->action == SCTP_DEL_IP_ADDRESS) {
5938 SCTP_FREE(wi->ifa, SCTP_M_IFA);
5940 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi);
5942 SCTP_WQ_ADDR_UNLOCK();
5945 * free the vrf/ifn/ifa lists and hashes (be sure address monitor is
5948 vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))];
5949 LIST_FOREACH_SAFE(vrf, vrf_bucket, next_vrf, nvrf) {
5950 LIST_FOREACH_SAFE(ifn, &vrf->ifnlist, next_ifn, nifn) {
5951 LIST_FOREACH_SAFE(ifa, &ifn->ifalist, next_ifa, nifa) {
5953 LIST_REMOVE(ifa, next_bucket);
5954 LIST_REMOVE(ifa, next_ifa);
5955 SCTP_FREE(ifa, SCTP_M_IFA);
5958 LIST_REMOVE(ifn, next_bucket);
5959 LIST_REMOVE(ifn, next_ifn);
5960 SCTP_FREE(ifn, SCTP_M_IFN);
5962 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
5964 LIST_REMOVE(vrf, next_vrf);
5965 SCTP_FREE(vrf, SCTP_M_VRF);
5967 /* free the vrf hashes */
5968 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark));
5969 SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark));
5972 * free the TIMEWAIT list elements malloc'd in the function
5973 * sctp_add_vtag_to_timewait()...
5975 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5976 chain = &SCTP_BASE_INFO(vtag_timewait)[i];
5977 if (!LIST_EMPTY(chain)) {
5978 prev_twait_block = NULL;
5979 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
5980 if (prev_twait_block) {
5981 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
5983 prev_twait_block = twait_block;
5985 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
5989 /* free the locks and mutexes */
5990 #ifdef SCTP_PACKET_LOGGING
5991 SCTP_IP_PKTLOG_DESTROY();
5993 SCTP_IPI_ADDR_DESTROY();
5994 SCTP_STATLOG_DESTROY();
5995 SCTP_INP_INFO_LOCK_DESTROY();
5997 SCTP_WQ_ADDR_DESTROY();
5999 /* Get rid of other stuff too. */
6000 if (SCTP_BASE_INFO(sctp_asochash) != NULL)
6001 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark));
6002 if (SCTP_BASE_INFO(sctp_ephash) != NULL)
6003 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark));
6004 if (SCTP_BASE_INFO(sctp_tcpephash) != NULL)
6005 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark));
6007 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep));
6008 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc));
6009 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr));
6010 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net));
6011 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk));
6012 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq));
6013 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq));
6014 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf));
6015 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack));
6016 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
6017 SCTP_FREE(SCTP_BASE_STATS, SCTP_M_MCORE);
6023 sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m,
6024 int offset, int limit,
6025 struct sockaddr *src, struct sockaddr *dst,
6026 struct sockaddr *altsa, uint16_t port)
6029 * grub through the INIT pulling addresses and loading them to the
6030 * nets structure in the asoc. The from address in the mbuf should
6031 * also be loaded (if it is not already). This routine can be called
6032 * with either INIT or INIT-ACK's as long as the m points to the IP
6033 * packet and the offset points to the beginning of the parameters.
6035 struct sctp_inpcb *inp;
6036 struct sctp_nets *net, *nnet, *net_tmp;
6037 struct sctp_paramhdr *phdr, parm_buf;
6038 struct sctp_tcb *stcb_tmp;
6039 uint16_t ptype, plen;
6040 struct sockaddr *sa;
6041 uint8_t random_store[SCTP_PARAM_BUFFER_SIZE];
6042 struct sctp_auth_random *p_random = NULL;
6043 uint16_t random_len = 0;
6044 uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE];
6045 struct sctp_auth_hmac_algo *hmacs = NULL;
6046 uint16_t hmacs_len = 0;
6047 uint8_t saw_asconf = 0;
6048 uint8_t saw_asconf_ack = 0;
6049 uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE];
6050 struct sctp_auth_chunk_list *chunks = NULL;
6051 uint16_t num_chunks = 0;
6052 sctp_key_t *new_key;
6054 int got_random = 0, got_hmacs = 0, got_chklist = 0;
6055 uint8_t peer_supports_ecn;
6056 uint8_t peer_supports_prsctp;
6057 uint8_t peer_supports_auth;
6058 uint8_t peer_supports_asconf;
6059 uint8_t peer_supports_asconf_ack;
6060 uint8_t peer_supports_reconfig;
6061 uint8_t peer_supports_nrsack;
6062 uint8_t peer_supports_pktdrop;
6063 uint8_t peer_supports_idata;
6065 struct sockaddr_in sin;
6068 struct sockaddr_in6 sin6;
6071 /* First get the destination address setup too. */
6073 memset(&sin, 0, sizeof(sin));
6074 sin.sin_family = AF_INET;
6075 sin.sin_len = sizeof(sin);
6076 sin.sin_port = stcb->rport;
6079 memset(&sin6, 0, sizeof(sin6));
6080 sin6.sin6_family = AF_INET6;
6081 sin6.sin6_len = sizeof(struct sockaddr_in6);
6082 sin6.sin6_port = stcb->rport;
6089 peer_supports_idata = 0;
6090 peer_supports_ecn = 0;
6091 peer_supports_prsctp = 0;
6092 peer_supports_auth = 0;
6093 peer_supports_asconf = 0;
6094 peer_supports_reconfig = 0;
6095 peer_supports_nrsack = 0;
6096 peer_supports_pktdrop = 0;
6097 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
6098 /* mark all addresses that we have currently on the list */
6099 net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC;
6101 /* does the source address already exist? if so skip it */
6102 inp = stcb->sctp_ep;
6103 atomic_add_int(&stcb->asoc.refcnt, 1);
6104 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, dst, stcb);
6105 atomic_add_int(&stcb->asoc.refcnt, -1);
6107 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) {
6108 /* we must add the source address */
6109 /* no scope set here since we have a tcb already. */
6110 switch (sa->sa_family) {
6113 if (stcb->asoc.scope.ipv4_addr_legal) {
6114 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) {
6122 if (stcb->asoc.scope.ipv6_addr_legal) {
6123 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
6133 if (net_tmp != NULL && stcb_tmp == stcb) {
6134 net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC;
6135 } else if (stcb_tmp != stcb) {
6136 /* It belongs to another association? */
6138 SCTP_TCB_UNLOCK(stcb_tmp);
6142 if (stcb->asoc.state == 0) {
6143 /* the assoc was freed? */
6146 /* now we must go through each of the params. */
6147 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
6149 ptype = ntohs(phdr->param_type);
6150 plen = ntohs(phdr->param_length);
6152 * SCTP_PRINTF("ptype => %0x, plen => %d\n",
6153 * (uint32_t)ptype, (int)plen);
6155 if (offset + plen > limit) {
6162 if (ptype == SCTP_IPV4_ADDRESS) {
6163 if (stcb->asoc.scope.ipv4_addr_legal) {
6164 struct sctp_ipv4addr_param *p4, p4_buf;
6166 /* ok get the v4 address and check/add */
6167 phdr = sctp_get_next_param(m, offset,
6168 (struct sctp_paramhdr *)&p4_buf,
6170 if (plen != sizeof(struct sctp_ipv4addr_param) ||
6174 p4 = (struct sctp_ipv4addr_param *)phdr;
6175 sin.sin_addr.s_addr = p4->addr;
6176 if (IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) {
6177 /* Skip multi-cast addresses */
6180 if ((sin.sin_addr.s_addr == INADDR_BROADCAST) ||
6181 (sin.sin_addr.s_addr == INADDR_ANY)) {
6184 sa = (struct sockaddr *)&sin;
6185 inp = stcb->sctp_ep;
6186 atomic_add_int(&stcb->asoc.refcnt, 1);
6187 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6189 atomic_add_int(&stcb->asoc.refcnt, -1);
6191 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) ||
6193 /* we must add the source address */
6195 * no scope set since we have a tcb
6200 * we must validate the state again
6204 if (stcb->asoc.state == 0) {
6205 /* the assoc was freed? */
6208 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) {
6211 } else if (stcb_tmp == stcb) {
6212 if (stcb->asoc.state == 0) {
6213 /* the assoc was freed? */
6219 ~SCTP_ADDR_NOT_IN_ASSOC;
6223 * strange, address is in another
6224 * assoc? straighten out locks.
6227 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6228 struct mbuf *op_err;
6229 char msg[SCTP_DIAG_INFO_LEN];
6235 snprintf(msg, sizeof(msg),
6236 "%s:%d at %s", __FILE__, __LINE__, __func__);
6237 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
6239 sctp_abort_an_association(stcb_tmp->sctp_ep,
6241 SCTP_SO_NOT_LOCKED);
6244 SCTP_TCB_UNLOCK(stcb_tmp);
6246 if (stcb->asoc.state == 0) {
6247 /* the assoc was freed? */
6256 if (ptype == SCTP_IPV6_ADDRESS) {
6257 if (stcb->asoc.scope.ipv6_addr_legal) {
6258 /* ok get the v6 address and check/add */
6259 struct sctp_ipv6addr_param *p6, p6_buf;
6261 phdr = sctp_get_next_param(m, offset,
6262 (struct sctp_paramhdr *)&p6_buf,
6264 if (plen != sizeof(struct sctp_ipv6addr_param) ||
6268 p6 = (struct sctp_ipv6addr_param *)phdr;
6269 memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
6271 if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) {
6272 /* Skip multi-cast addresses */
6275 if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) {
6277 * Link local make no sense without
6282 sa = (struct sockaddr *)&sin6;
6283 inp = stcb->sctp_ep;
6284 atomic_add_int(&stcb->asoc.refcnt, 1);
6285 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6287 atomic_add_int(&stcb->asoc.refcnt, -1);
6288 if (stcb_tmp == NULL &&
6289 (inp == stcb->sctp_ep || inp == NULL)) {
6291 * we must validate the state again
6295 if (stcb->asoc.state == 0) {
6296 /* the assoc was freed? */
6300 * we must add the address, no scope
6303 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) {
6306 } else if (stcb_tmp == stcb) {
6308 * we must validate the state again
6311 if (stcb->asoc.state == 0) {
6312 /* the assoc was freed? */
6318 ~SCTP_ADDR_NOT_IN_ASSOC;
6322 * strange, address is in another
6323 * assoc? straighten out locks.
6326 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6327 struct mbuf *op_err;
6328 char msg[SCTP_DIAG_INFO_LEN];
6334 snprintf(msg, sizeof(msg),
6335 "%s:%d at %s", __FILE__, __LINE__, __func__);
6336 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
6338 sctp_abort_an_association(stcb_tmp->sctp_ep,
6340 SCTP_SO_NOT_LOCKED);
6343 SCTP_TCB_UNLOCK(stcb_tmp);
6345 if (stcb->asoc.state == 0) {
6346 /* the assoc was freed? */
6354 if (ptype == SCTP_ECN_CAPABLE) {
6355 peer_supports_ecn = 1;
6356 } else if (ptype == SCTP_ULP_ADAPTATION) {
6357 if (stcb->asoc.state != SCTP_STATE_OPEN) {
6358 struct sctp_adaptation_layer_indication ai,
6361 phdr = sctp_get_next_param(m, offset,
6362 (struct sctp_paramhdr *)&ai, sizeof(ai));
6363 aip = (struct sctp_adaptation_layer_indication *)phdr;
6365 stcb->asoc.peers_adaptation = ntohl(aip->indication);
6366 stcb->asoc.adaptation_needed = 1;
6369 } else if (ptype == SCTP_SET_PRIM_ADDR) {
6370 struct sctp_asconf_addr_param lstore, *fee;
6372 struct sockaddr *lsa = NULL;
6374 struct sctp_asconf_addrv4_param *fii;
6377 if (stcb->asoc.asconf_supported == 0) {
6380 if (plen > sizeof(lstore)) {
6383 phdr = sctp_get_next_param(m, offset,
6384 (struct sctp_paramhdr *)&lstore,
6385 min(plen, sizeof(lstore)));
6389 fee = (struct sctp_asconf_addr_param *)phdr;
6390 lptype = ntohs(fee->addrp.ph.param_type);
6393 case SCTP_IPV4_ADDRESS:
6395 sizeof(struct sctp_asconf_addrv4_param)) {
6396 SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n",
6397 (int)sizeof(struct sctp_asconf_addrv4_param),
6400 fii = (struct sctp_asconf_addrv4_param *)fee;
6401 sin.sin_addr.s_addr = fii->addrp.addr;
6402 lsa = (struct sockaddr *)&sin;
6407 case SCTP_IPV6_ADDRESS:
6409 sizeof(struct sctp_asconf_addr_param)) {
6410 SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n",
6411 (int)sizeof(struct sctp_asconf_addr_param),
6414 memcpy(sin6.sin6_addr.s6_addr,
6416 sizeof(fee->addrp.addr));
6417 lsa = (struct sockaddr *)&sin6;
6425 (void)sctp_set_primary_addr(stcb, sa, NULL);
6427 } else if (ptype == SCTP_HAS_NAT_SUPPORT) {
6428 stcb->asoc.peer_supports_nat = 1;
6429 } else if (ptype == SCTP_PRSCTP_SUPPORTED) {
6430 /* Peer supports pr-sctp */
6431 peer_supports_prsctp = 1;
6432 } else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) {
6433 /* A supported extension chunk */
6434 struct sctp_supported_chunk_types_param *pr_supported;
6435 uint8_t local_store[SCTP_PARAM_BUFFER_SIZE];
6438 phdr = sctp_get_next_param(m, offset,
6439 (struct sctp_paramhdr *)&local_store, min(sizeof(local_store), plen));
6443 pr_supported = (struct sctp_supported_chunk_types_param *)phdr;
6444 num_ent = plen - sizeof(struct sctp_paramhdr);
6445 for (i = 0; i < num_ent; i++) {
6446 switch (pr_supported->chunk_types[i]) {
6448 peer_supports_asconf = 1;
6450 case SCTP_ASCONF_ACK:
6451 peer_supports_asconf_ack = 1;
6453 case SCTP_FORWARD_CUM_TSN:
6454 peer_supports_prsctp = 1;
6456 case SCTP_PACKET_DROPPED:
6457 peer_supports_pktdrop = 1;
6459 case SCTP_NR_SELECTIVE_ACK:
6460 peer_supports_nrsack = 1;
6462 case SCTP_STREAM_RESET:
6463 peer_supports_reconfig = 1;
6465 case SCTP_AUTHENTICATION:
6466 peer_supports_auth = 1;
6469 peer_supports_idata = 1;
6472 /* one I have not learned yet */
6477 } else if (ptype == SCTP_RANDOM) {
6478 if (plen > sizeof(random_store))
6481 /* already processed a RANDOM */
6484 phdr = sctp_get_next_param(m, offset,
6485 (struct sctp_paramhdr *)random_store,
6486 min(sizeof(random_store), plen));
6489 p_random = (struct sctp_auth_random *)phdr;
6490 random_len = plen - sizeof(*p_random);
6491 /* enforce the random length */
6492 if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) {
6493 SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n");
6497 } else if (ptype == SCTP_HMAC_LIST) {
6501 if (plen > sizeof(hmacs_store))
6504 /* already processed a HMAC list */
6507 phdr = sctp_get_next_param(m, offset,
6508 (struct sctp_paramhdr *)hmacs_store,
6509 min(plen, sizeof(hmacs_store)));
6512 hmacs = (struct sctp_auth_hmac_algo *)phdr;
6513 hmacs_len = plen - sizeof(*hmacs);
6514 num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]);
6515 /* validate the hmac list */
6516 if (sctp_verify_hmac_param(hmacs, num_hmacs)) {
6519 if (stcb->asoc.peer_hmacs != NULL)
6520 sctp_free_hmaclist(stcb->asoc.peer_hmacs);
6521 stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs);
6522 if (stcb->asoc.peer_hmacs != NULL) {
6523 for (i = 0; i < num_hmacs; i++) {
6524 (void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs,
6525 ntohs(hmacs->hmac_ids[i]));
6529 } else if (ptype == SCTP_CHUNK_LIST) {
6532 if (plen > sizeof(chunks_store))
6535 /* already processed a Chunks list */
6538 phdr = sctp_get_next_param(m, offset,
6539 (struct sctp_paramhdr *)chunks_store,
6540 min(plen, sizeof(chunks_store)));
6543 chunks = (struct sctp_auth_chunk_list *)phdr;
6544 num_chunks = plen - sizeof(*chunks);
6545 if (stcb->asoc.peer_auth_chunks != NULL)
6546 sctp_clear_chunklist(stcb->asoc.peer_auth_chunks);
6548 stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist();
6549 for (i = 0; i < num_chunks; i++) {
6550 (void)sctp_auth_add_chunk(chunks->chunk_types[i],
6551 stcb->asoc.peer_auth_chunks);
6552 /* record asconf/asconf-ack if listed */
6553 if (chunks->chunk_types[i] == SCTP_ASCONF)
6555 if (chunks->chunk_types[i] == SCTP_ASCONF_ACK)
6560 } else if ((ptype == SCTP_HEARTBEAT_INFO) ||
6561 (ptype == SCTP_STATE_COOKIE) ||
6562 (ptype == SCTP_UNRECOG_PARAM) ||
6563 (ptype == SCTP_COOKIE_PRESERVE) ||
6564 (ptype == SCTP_SUPPORTED_ADDRTYPE) ||
6565 (ptype == SCTP_ADD_IP_ADDRESS) ||
6566 (ptype == SCTP_DEL_IP_ADDRESS) ||
6567 (ptype == SCTP_ERROR_CAUSE_IND) ||
6568 (ptype == SCTP_SUCCESS_REPORT)) {
6571 if ((ptype & 0x8000) == 0x0000) {
6573 * must stop processing the rest of the
6574 * param's. Any report bits were handled
6576 * sctp_arethere_unrecognized_parameters()
6577 * when the INIT or INIT-ACK was first seen.
6584 offset += SCTP_SIZE32(plen);
6585 if (offset >= limit) {
6588 phdr = sctp_get_next_param(m, offset, &parm_buf,
6591 /* Now check to see if we need to purge any addresses */
6592 TAILQ_FOREACH_SAFE(net, &stcb->asoc.nets, sctp_next, nnet) {
6593 if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) ==
6594 SCTP_ADDR_NOT_IN_ASSOC) {
6595 /* This address has been removed from the asoc */
6596 /* remove and free it */
6597 stcb->asoc.numnets--;
6598 TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next);
6599 sctp_free_remote_addr(net);
6600 if (net == stcb->asoc.primary_destination) {
6601 stcb->asoc.primary_destination = NULL;
6602 sctp_select_primary_destination(stcb);
6606 if ((stcb->asoc.ecn_supported == 1) &&
6607 (peer_supports_ecn == 0)) {
6608 stcb->asoc.ecn_supported = 0;
6610 if ((stcb->asoc.prsctp_supported == 1) &&
6611 (peer_supports_prsctp == 0)) {
6612 stcb->asoc.prsctp_supported = 0;
6614 if ((stcb->asoc.auth_supported == 1) &&
6615 ((peer_supports_auth == 0) ||
6616 (got_random == 0) || (got_hmacs == 0))) {
6617 stcb->asoc.auth_supported = 0;
6619 if ((stcb->asoc.asconf_supported == 1) &&
6620 ((peer_supports_asconf == 0) || (peer_supports_asconf_ack == 0) ||
6621 (stcb->asoc.auth_supported == 0) ||
6622 (saw_asconf == 0) || (saw_asconf_ack == 0))) {
6623 stcb->asoc.asconf_supported = 0;
6625 if ((stcb->asoc.reconfig_supported == 1) &&
6626 (peer_supports_reconfig == 0)) {
6627 stcb->asoc.reconfig_supported = 0;
6629 if ((stcb->asoc.idata_supported == 1) &&
6630 (peer_supports_idata == 0)) {
6631 stcb->asoc.idata_supported = 0;
6633 if ((stcb->asoc.nrsack_supported == 1) &&
6634 (peer_supports_nrsack == 0)) {
6635 stcb->asoc.nrsack_supported = 0;
6637 if ((stcb->asoc.pktdrop_supported == 1) &&
6638 (peer_supports_pktdrop == 0)) {
6639 stcb->asoc.pktdrop_supported = 0;
6641 /* validate authentication required parameters */
6642 if ((peer_supports_auth == 0) && (got_chklist == 1)) {
6643 /* peer does not support auth but sent a chunks list? */
6646 if ((peer_supports_asconf == 1) && (peer_supports_auth == 0)) {
6647 /* peer supports asconf but not auth? */
6649 } else if ((peer_supports_asconf == 1) &&
6650 (peer_supports_auth == 1) &&
6651 ((saw_asconf == 0) || (saw_asconf_ack == 0))) {
6654 /* concatenate the full random key */
6655 keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len;
6656 if (chunks != NULL) {
6657 keylen += sizeof(*chunks) + num_chunks;
6659 new_key = sctp_alloc_key(keylen);
6660 if (new_key != NULL) {
6661 /* copy in the RANDOM */
6662 if (p_random != NULL) {
6663 keylen = sizeof(*p_random) + random_len;
6664 bcopy(p_random, new_key->key, keylen);
6666 /* append in the AUTH chunks */
6667 if (chunks != NULL) {
6668 bcopy(chunks, new_key->key + keylen,
6669 sizeof(*chunks) + num_chunks);
6670 keylen += sizeof(*chunks) + num_chunks;
6672 /* append in the HMACs */
6673 if (hmacs != NULL) {
6674 bcopy(hmacs, new_key->key + keylen,
6675 sizeof(*hmacs) + hmacs_len);
6678 /* failed to get memory for the key */
6681 if (stcb->asoc.authinfo.peer_random != NULL)
6682 sctp_free_key(stcb->asoc.authinfo.peer_random);
6683 stcb->asoc.authinfo.peer_random = new_key;
6684 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid);
6685 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid);
6691 sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa,
6692 struct sctp_nets *net)
6694 /* make sure the requested primary address exists in the assoc */
6695 if (net == NULL && sa)
6696 net = sctp_findnet(stcb, sa);
6699 /* didn't find the requested primary address! */
6702 /* set the primary address */
6703 if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
6704 /* Must be confirmed, so queue to set */
6705 net->dest_state |= SCTP_ADDR_REQ_PRIMARY;
6708 stcb->asoc.primary_destination = net;
6709 if (!(net->dest_state & SCTP_ADDR_PF) && (stcb->asoc.alternate)) {
6710 sctp_free_remote_addr(stcb->asoc.alternate);
6711 stcb->asoc.alternate = NULL;
6713 net = TAILQ_FIRST(&stcb->asoc.nets);
6714 if (net != stcb->asoc.primary_destination) {
6716 * first one on the list is NOT the primary
6717 * sctp_cmpaddr() is much more efficient if the
6718 * primary is the first on the list, make it so.
6720 TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6721 TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6728 sctp_is_vtag_good(uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now)
6731 * This function serves two purposes. It will see if a TAG can be
6732 * re-used and return 1 for yes it is ok and 0 for don't use that
6733 * tag. A secondary function it will do is purge out old tags that
6736 struct sctpvtaghead *chain;
6737 struct sctp_tagblock *twait_block;
6738 struct sctpasochead *head;
6739 struct sctp_tcb *stcb;
6742 SCTP_INP_INFO_RLOCK();
6743 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag,
6744 SCTP_BASE_INFO(hashasocmark))];
6745 LIST_FOREACH(stcb, head, sctp_asocs) {
6747 * We choose not to lock anything here. TCB's can't be
6748 * removed since we have the read lock, so they can't be
6749 * freed on us, same thing for the INP. I may be wrong with
6750 * this assumption, but we will go with it for now :-)
6752 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
6755 if (stcb->asoc.my_vtag == tag) {
6757 if (stcb->rport != rport) {
6760 if (stcb->sctp_ep->sctp_lport != lport) {
6763 /* Its a used tag set */
6764 SCTP_INP_INFO_RUNLOCK();
6768 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
6769 /* Now what about timed wait ? */
6770 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6772 * Block(s) are present, lets see if we have this tag in the
6775 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
6776 if (twait_block->vtag_block[i].v_tag == 0) {
6779 } else if ((long)twait_block->vtag_block[i].tv_sec_at_expire <
6781 /* Audit expires this guy */
6782 twait_block->vtag_block[i].tv_sec_at_expire = 0;
6783 twait_block->vtag_block[i].v_tag = 0;
6784 twait_block->vtag_block[i].lport = 0;
6785 twait_block->vtag_block[i].rport = 0;
6786 } else if ((twait_block->vtag_block[i].v_tag == tag) &&
6787 (twait_block->vtag_block[i].lport == lport) &&
6788 (twait_block->vtag_block[i].rport == rport)) {
6789 /* Bad tag, sorry :< */
6790 SCTP_INP_INFO_RUNLOCK();
6795 SCTP_INP_INFO_RUNLOCK();
6800 sctp_drain_mbufs(struct sctp_tcb *stcb)
6803 * We must hunt this association for MBUF's past the cumack (i.e.
6804 * out of order data that we can renege on).
6806 struct sctp_association *asoc;
6807 struct sctp_tmit_chunk *chk, *nchk;
6808 uint32_t cumulative_tsn_p1;
6809 struct sctp_queued_to_read *ctl, *nctl;
6814 /* We look for anything larger than the cum-ack + 1 */
6817 if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) {
6818 /* none we can reneg on. */
6821 SCTP_STAT_INCR(sctps_protocol_drains_done);
6822 cumulative_tsn_p1 = asoc->cumulative_tsn + 1;
6824 /* Ok that was fun, now we will drain all the inbound streams? */
6825 for (strmat = 0; strmat < asoc->streamincnt; strmat++) {
6826 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[strmat].inqueue, next_instrm, nctl) {
6828 if (ctl->on_strm_q != SCTP_ON_ORDERED) {
6829 panic("Huh control: %p on_q: %d -- not ordered?",
6830 ctl, ctl->on_strm_q);
6833 if (SCTP_TSN_GT(ctl->sinfo_tsn, cumulative_tsn_p1)) {
6834 /* Yep it is above cum-ack */
6836 SCTP_CALC_TSN_TO_GAP(gap, ctl->sinfo_tsn, asoc->mapping_array_base_tsn);
6837 asoc->size_on_all_streams = sctp_sbspace_sub(asoc->size_on_all_streams, ctl->length);
6838 sctp_ucount_decr(asoc->cnt_on_all_streams);
6839 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6840 if (ctl->on_read_q) {
6841 TAILQ_REMOVE(&stcb->sctp_ep->read_queue, ctl, next);
6844 TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, ctl, next_instrm);
6847 sctp_m_freem(ctl->data);
6850 sctp_free_remote_addr(ctl->whoFrom);
6851 /* Now its reasm? */
6852 TAILQ_FOREACH_SAFE(chk, &ctl->reasm, sctp_next, nchk) {
6854 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.tsn, asoc->mapping_array_base_tsn);
6855 asoc->size_on_reasm_queue = sctp_sbspace_sub(asoc->size_on_reasm_queue, chk->send_size);
6856 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6857 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6858 TAILQ_REMOVE(&ctl->reasm, chk, sctp_next);
6860 sctp_m_freem(chk->data);
6863 sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
6865 sctp_free_a_readq(stcb, ctl);
6868 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[strmat].uno_inqueue, next_instrm, nctl) {
6870 if (ctl->on_strm_q != SCTP_ON_UNORDERED) {
6871 panic("Huh control: %p on_q: %d -- not unordered?",
6872 ctl, ctl->on_strm_q);
6875 if (SCTP_TSN_GT(ctl->sinfo_tsn, cumulative_tsn_p1)) {
6876 /* Yep it is above cum-ack */
6878 SCTP_CALC_TSN_TO_GAP(gap, ctl->sinfo_tsn, asoc->mapping_array_base_tsn);
6879 asoc->size_on_all_streams = sctp_sbspace_sub(asoc->size_on_all_streams, ctl->length);
6880 sctp_ucount_decr(asoc->cnt_on_all_streams);
6881 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6882 if (ctl->on_read_q) {
6883 TAILQ_REMOVE(&stcb->sctp_ep->read_queue, ctl, next);
6886 TAILQ_REMOVE(&asoc->strmin[strmat].uno_inqueue, ctl, next_instrm);
6889 sctp_m_freem(ctl->data);
6892 sctp_free_remote_addr(ctl->whoFrom);
6893 /* Now its reasm? */
6894 TAILQ_FOREACH_SAFE(chk, &ctl->reasm, sctp_next, nchk) {
6896 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.tsn, asoc->mapping_array_base_tsn);
6897 asoc->size_on_reasm_queue = sctp_sbspace_sub(asoc->size_on_reasm_queue, chk->send_size);
6898 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6899 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6900 TAILQ_REMOVE(&ctl->reasm, chk, sctp_next);
6902 sctp_m_freem(chk->data);
6905 sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
6907 sctp_free_a_readq(stcb, ctl);
6912 /* We must back down to see what the new highest is */
6913 for (i = asoc->highest_tsn_inside_map; SCTP_TSN_GE(i, asoc->mapping_array_base_tsn); i--) {
6914 SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn);
6915 if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) {
6916 asoc->highest_tsn_inside_map = i;
6922 asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1;
6925 * Question, should we go through the delivery queue? The
6926 * only reason things are on here is the app not reading OR
6927 * a p-d-api up. An attacker COULD send enough in to
6928 * initiate the PD-API and then send a bunch of stuff to
6929 * other streams... these would wind up on the delivery
6930 * queue.. and then we would not get to them. But in order
6931 * to do this I then have to back-track and un-deliver
6932 * sequence numbers in streams.. el-yucko. I think for now
6933 * we will NOT look at the delivery queue and leave it to be
6934 * something to consider later. An alternative would be to
6935 * abort the P-D-API with a notification and then deliver
6936 * the data.... Or another method might be to keep track of
6937 * how many times the situation occurs and if we see a
6938 * possible attack underway just abort the association.
6941 SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt);
6944 * Now do we need to find a new
6945 * asoc->highest_tsn_inside_map?
6947 asoc->last_revoke_count = cnt;
6948 (void)SCTP_OS_TIMER_STOP(&stcb->asoc.dack_timer.timer);
6949 /* sa_ignore NO_NULL_CHK */
6950 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
6951 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED);
6954 * Another issue, in un-setting the TSN's in the mapping array we
6955 * DID NOT adjust the highest_tsn marker. This will cause one of
6956 * two things to occur. It may cause us to do extra work in checking
6957 * for our mapping array movement. More importantly it may cause us
6958 * to SACK every datagram. This may not be a bad thing though since
6959 * we will recover once we get our cum-ack above and all this stuff
6960 * we dumped recovered.
6968 * We must walk the PCB lists for ALL associations here. The system
6969 * is LOW on MBUF's and needs help. This is where reneging will
6970 * occur. We really hope this does NOT happen!
6972 VNET_ITERATOR_DECL(vnet_iter);
6973 VNET_LIST_RLOCK_NOSLEEP();
6974 VNET_FOREACH(vnet_iter) {
6975 CURVNET_SET(vnet_iter);
6976 struct sctp_inpcb *inp;
6977 struct sctp_tcb *stcb;
6979 SCTP_STAT_INCR(sctps_protocol_drain_calls);
6980 if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
6987 SCTP_INP_INFO_RLOCK();
6988 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
6989 /* For each endpoint */
6990 SCTP_INP_RLOCK(inp);
6991 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
6992 /* For each association */
6993 SCTP_TCB_LOCK(stcb);
6994 sctp_drain_mbufs(stcb);
6995 SCTP_TCB_UNLOCK(stcb);
6997 SCTP_INP_RUNLOCK(inp);
6999 SCTP_INP_INFO_RUNLOCK();
7002 VNET_LIST_RUNLOCK_NOSLEEP();
7006 * start a new iterator
7007 * iterates through all endpoints and associations based on the pcb_state
7008 * flags and asoc_state. "af" (mandatory) is executed for all matching
7009 * assocs and "ef" (optional) is executed when the iterator completes.
7010 * "inpf" (optional) is executed for each new endpoint as it is being
7011 * iterated through. inpe (optional) is called when the inp completes
7012 * its way through all the stcbs.
7015 sctp_initiate_iterator(inp_func inpf,
7019 uint32_t pcb_features,
7020 uint32_t asoc_state,
7024 struct sctp_inpcb *s_inp,
7025 uint8_t chunk_output_off)
7027 struct sctp_iterator *it = NULL;
7032 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
7033 SCTP_PRINTF("%s: abort on initialize being %d\n", __func__,
7034 SCTP_BASE_VAR(sctp_pcb_initialized));
7037 SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator),
7040 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
7043 memset(it, 0, sizeof(*it));
7044 it->function_assoc = af;
7045 it->function_inp = inpf;
7047 it->done_current_ep = 0;
7049 it->done_current_ep = 1;
7050 it->function_atend = ef;
7053 it->pcb_flags = pcb_state;
7054 it->pcb_features = pcb_features;
7055 it->asoc_state = asoc_state;
7056 it->function_inp_end = inpe;
7057 it->no_chunk_output = chunk_output_off;
7060 /* Assume lock is held here */
7062 SCTP_INP_INCR_REF(it->inp);
7063 it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP;
7065 SCTP_INP_INFO_RLOCK();
7066 it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead));
7068 SCTP_INP_INCR_REF(it->inp);
7070 SCTP_INP_INFO_RUNLOCK();
7071 it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP;
7074 SCTP_IPI_ITERATOR_WQ_LOCK();
7075 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
7076 SCTP_IPI_ITERATOR_WQ_UNLOCK();
7077 SCTP_PRINTF("%s: rollback on initialize being %d it=%p\n", __func__,
7078 SCTP_BASE_VAR(sctp_pcb_initialized), it);
7079 SCTP_FREE(it, SCTP_M_ITER);
7082 TAILQ_INSERT_TAIL(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
7083 if (sctp_it_ctl.iterator_running == 0) {
7084 sctp_wakeup_iterator();
7086 SCTP_IPI_ITERATOR_WQ_UNLOCK();
7087 /* sa_ignore MEMLEAK {memory is put on the tailq for the iterator} */