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));
84 sctp_fill_pcbinfo(struct sctp_pcbinfo *spcb)
87 * We really don't need to lock this, but I will just because it
90 SCTP_INP_INFO_RLOCK();
91 spcb->ep_count = SCTP_BASE_INFO(ipi_count_ep);
92 spcb->asoc_count = SCTP_BASE_INFO(ipi_count_asoc);
93 spcb->laddr_count = SCTP_BASE_INFO(ipi_count_laddr);
94 spcb->raddr_count = SCTP_BASE_INFO(ipi_count_raddr);
95 spcb->chk_count = SCTP_BASE_INFO(ipi_count_chunk);
96 spcb->readq_count = SCTP_BASE_INFO(ipi_count_readq);
97 spcb->stream_oque = SCTP_BASE_INFO(ipi_count_strmoq);
98 spcb->free_chunks = SCTP_BASE_INFO(ipi_free_chunks);
99 SCTP_INP_INFO_RUNLOCK();
103 * Addresses are added to VRF's (Virtual Router's). For BSD we
104 * have only the default VRF 0. We maintain a hash list of
105 * VRF's. Each VRF has its own list of sctp_ifn's. Each of
106 * these has a list of addresses. When we add a new address
107 * to a VRF we lookup the ifn/ifn_index, if the ifn does
108 * not exist we create it and add it to the list of IFN's
109 * within the VRF. Once we have the sctp_ifn, we add the
110 * address to the list. So we look something like:
113 * vrf-> ifn-> ifn -> ifn
115 * ... +--ifa-> ifa -> ifa
118 * We keep these separate lists since the SCTP subsystem will
119 * point to these from its source address selection nets structure.
120 * When an address is deleted it does not happen right away on
121 * the SCTP side, it gets scheduled. What we do when a
122 * delete happens is immediately remove the address from
123 * the master list and decrement the refcount. As our
124 * addip iterator works through and frees the src address
125 * selection pointing to the sctp_ifa, eventually the refcount
126 * will reach 0 and we will delete it. Note that it is assumed
127 * that any locking on system level ifn/ifa is done at the
128 * caller of these functions and these routines will only
129 * lock the SCTP structures as they add or delete things.
131 * Other notes on VRF concepts.
132 * - An endpoint can be in multiple VRF's
133 * - An association lives within a VRF and only one VRF.
134 * - Any incoming packet we can deduce the VRF for by
135 * looking at the mbuf/pak inbound (for BSD its VRF=0 :D)
136 * - Any downward send call or connect call must supply the
137 * VRF via ancillary data or via some sort of set default
138 * VRF socket option call (again for BSD no brainer since
139 * the VRF is always 0).
140 * - An endpoint may add multiple VRF's to it.
141 * - Listening sockets can accept associations in any
142 * of the VRF's they are in but the assoc will end up
143 * in only one VRF (gotten from the packet or connect/send).
148 sctp_allocate_vrf(int vrf_id)
150 struct sctp_vrf *vrf = NULL;
151 struct sctp_vrflist *bucket;
153 /* First allocate the VRF structure */
154 vrf = sctp_find_vrf(vrf_id);
156 /* Already allocated */
159 SCTP_MALLOC(vrf, struct sctp_vrf *, sizeof(struct sctp_vrf),
164 panic("No memory for VRF:%d", vrf_id);
169 memset(vrf, 0, sizeof(struct sctp_vrf));
170 vrf->vrf_id = vrf_id;
171 LIST_INIT(&vrf->ifnlist);
172 vrf->total_ifa_count = 0;
174 /* now also setup table ids */
175 SCTP_INIT_VRF_TABLEID(vrf);
176 /* Init the HASH of addresses */
177 vrf->vrf_addr_hash = SCTP_HASH_INIT(SCTP_VRF_ADDR_HASH_SIZE,
178 &vrf->vrf_addr_hashmark);
179 if (vrf->vrf_addr_hash == NULL) {
182 panic("No memory for VRF:%d", vrf_id);
184 SCTP_FREE(vrf, SCTP_M_VRF);
187 /* Add it to the hash table */
188 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
189 LIST_INSERT_HEAD(bucket, vrf, next_vrf);
190 atomic_add_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
196 sctp_find_ifn(void *ifn, uint32_t ifn_index)
198 struct sctp_ifn *sctp_ifnp;
199 struct sctp_ifnlist *hash_ifn_head;
202 * We assume the lock is held for the addresses if that's wrong
203 * problems could occur :-)
205 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
206 LIST_FOREACH(sctp_ifnp, hash_ifn_head, next_bucket) {
207 if (sctp_ifnp->ifn_index == ifn_index) {
210 if (sctp_ifnp->ifn_p && ifn && (sctp_ifnp->ifn_p == ifn)) {
219 sctp_find_vrf(uint32_t vrf_id)
221 struct sctp_vrflist *bucket;
222 struct sctp_vrf *liste;
224 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
225 LIST_FOREACH(liste, bucket, next_vrf) {
226 if (vrf_id == liste->vrf_id) {
235 sctp_free_vrf(struct sctp_vrf *vrf)
237 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&vrf->refcount)) {
238 if (vrf->vrf_addr_hash) {
239 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
240 vrf->vrf_addr_hash = NULL;
242 /* We zero'd the count */
243 LIST_REMOVE(vrf, next_vrf);
244 SCTP_FREE(vrf, SCTP_M_VRF);
245 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
251 sctp_free_ifn(struct sctp_ifn *sctp_ifnp)
253 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifnp->refcount)) {
254 /* We zero'd the count */
255 if (sctp_ifnp->vrf) {
256 sctp_free_vrf(sctp_ifnp->vrf);
258 SCTP_FREE(sctp_ifnp, SCTP_M_IFN);
259 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
265 sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu)
267 struct sctp_ifn *sctp_ifnp;
269 sctp_ifnp = sctp_find_ifn((void *)NULL, ifn_index);
270 if (sctp_ifnp != NULL) {
271 sctp_ifnp->ifn_mtu = mtu;
277 sctp_free_ifa(struct sctp_ifa *sctp_ifap)
279 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifap->refcount)) {
280 /* We zero'd the count */
281 if (sctp_ifap->ifn_p) {
282 sctp_free_ifn(sctp_ifap->ifn_p);
284 SCTP_FREE(sctp_ifap, SCTP_M_IFA);
285 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
291 sctp_delete_ifn(struct sctp_ifn *sctp_ifnp, int hold_addr_lock)
293 struct sctp_ifn *found;
295 found = sctp_find_ifn(sctp_ifnp->ifn_p, sctp_ifnp->ifn_index);
297 /* Not in the list.. sorry */
300 if (hold_addr_lock == 0)
301 SCTP_IPI_ADDR_WLOCK();
302 LIST_REMOVE(sctp_ifnp, next_bucket);
303 LIST_REMOVE(sctp_ifnp, next_ifn);
304 SCTP_DEREGISTER_INTERFACE(sctp_ifnp->ifn_index,
305 sctp_ifnp->registered_af);
306 if (hold_addr_lock == 0)
307 SCTP_IPI_ADDR_WUNLOCK();
308 /* Take away the reference, and possibly free it */
309 sctp_free_ifn(sctp_ifnp);
314 sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr,
315 const char *if_name, uint32_t ifn_index)
317 struct sctp_vrf *vrf;
318 struct sctp_ifa *sctp_ifap;
320 SCTP_IPI_ADDR_RLOCK();
321 vrf = sctp_find_vrf(vrf_id);
323 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
327 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
328 if (sctp_ifap == NULL) {
329 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
332 if (sctp_ifap->ifn_p == NULL) {
333 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unuseable\n");
337 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) != 0) {
338 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
339 sctp_ifap->ifn_p->ifn_name, if_name);
343 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
344 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
345 sctp_ifap->ifn_p->ifn_index, ifn_index);
350 sctp_ifap->localifa_flags &= (~SCTP_ADDR_VALID);
351 sctp_ifap->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE;
353 SCTP_IPI_ADDR_RUNLOCK();
358 sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr,
359 const char *if_name, uint32_t ifn_index)
361 struct sctp_vrf *vrf;
362 struct sctp_ifa *sctp_ifap;
364 SCTP_IPI_ADDR_RLOCK();
365 vrf = sctp_find_vrf(vrf_id);
367 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
371 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
372 if (sctp_ifap == NULL) {
373 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
376 if (sctp_ifap->ifn_p == NULL) {
377 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unuseable\n");
381 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) != 0) {
382 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
383 sctp_ifap->ifn_p->ifn_name, if_name);
387 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
388 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
389 sctp_ifap->ifn_p->ifn_index, ifn_index);
394 sctp_ifap->localifa_flags &= (~SCTP_ADDR_IFA_UNUSEABLE);
395 sctp_ifap->localifa_flags |= SCTP_ADDR_VALID;
397 SCTP_IPI_ADDR_RUNLOCK();
402 * Add an ifa to an ifn.
403 * Register the interface as necessary.
404 * NOTE: ADDR write lock MUST be held.
407 sctp_add_ifa_to_ifn(struct sctp_ifn *sctp_ifnp, struct sctp_ifa *sctp_ifap)
411 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
412 sctp_ifap->ifn_p = sctp_ifnp;
413 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
414 /* update address counts */
415 sctp_ifnp->ifa_count++;
416 ifa_af = sctp_ifap->address.sa.sa_family;
431 if (sctp_ifnp->ifa_count == 1) {
432 /* register the new interface */
433 SCTP_REGISTER_INTERFACE(sctp_ifnp->ifn_index, ifa_af);
434 sctp_ifnp->registered_af = ifa_af;
440 * Remove an ifa from its ifn.
441 * If no more addresses exist, remove the ifn too. Otherwise, re-register
442 * the interface based on the remaining address families left.
443 * NOTE: ADDR write lock MUST be held.
446 sctp_remove_ifa_from_ifn(struct sctp_ifa *sctp_ifap)
448 LIST_REMOVE(sctp_ifap, next_ifa);
449 if (sctp_ifap->ifn_p) {
450 /* update address counts */
451 sctp_ifap->ifn_p->ifa_count--;
452 switch (sctp_ifap->address.sa.sa_family) {
455 sctp_ifap->ifn_p->num_v4--;
460 sctp_ifap->ifn_p->num_v6--;
467 if (LIST_EMPTY(&sctp_ifap->ifn_p->ifalist)) {
468 /* remove the ifn, possibly freeing it */
469 sctp_delete_ifn(sctp_ifap->ifn_p, SCTP_ADDR_LOCKED);
471 /* re-register address family type, if needed */
472 if ((sctp_ifap->ifn_p->num_v6 == 0) &&
473 (sctp_ifap->ifn_p->registered_af == AF_INET6)) {
474 SCTP_DEREGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET6);
475 SCTP_REGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET);
476 sctp_ifap->ifn_p->registered_af = AF_INET;
477 } else if ((sctp_ifap->ifn_p->num_v4 == 0) &&
478 (sctp_ifap->ifn_p->registered_af == AF_INET)) {
479 SCTP_DEREGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET);
480 SCTP_REGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET6);
481 sctp_ifap->ifn_p->registered_af = AF_INET6;
483 /* free the ifn refcount */
484 sctp_free_ifn(sctp_ifap->ifn_p);
486 sctp_ifap->ifn_p = NULL;
492 sctp_add_addr_to_vrf(uint32_t vrf_id, void *ifn, uint32_t ifn_index,
493 uint32_t ifn_type, const char *if_name, void *ifa,
494 struct sockaddr *addr, uint32_t ifa_flags,
497 struct sctp_vrf *vrf;
498 struct sctp_ifn *sctp_ifnp = NULL;
499 struct sctp_ifa *sctp_ifap = NULL;
500 struct sctp_ifalist *hash_addr_head;
501 struct sctp_ifnlist *hash_ifn_head;
502 uint32_t hash_of_addr;
506 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: adding address: ", vrf_id);
507 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
509 SCTP_IPI_ADDR_WLOCK();
510 sctp_ifnp = sctp_find_ifn(ifn, ifn_index);
512 vrf = sctp_ifnp->vrf;
514 vrf = sctp_find_vrf(vrf_id);
516 vrf = sctp_allocate_vrf(vrf_id);
518 SCTP_IPI_ADDR_WUNLOCK();
523 if (sctp_ifnp == NULL) {
525 * build one and add it, can't hold lock until after malloc
528 SCTP_IPI_ADDR_WUNLOCK();
529 SCTP_MALLOC(sctp_ifnp, struct sctp_ifn *,
530 sizeof(struct sctp_ifn), SCTP_M_IFN);
531 if (sctp_ifnp == NULL) {
533 panic("No memory for IFN");
537 memset(sctp_ifnp, 0, sizeof(struct sctp_ifn));
538 sctp_ifnp->ifn_index = ifn_index;
539 sctp_ifnp->ifn_p = ifn;
540 sctp_ifnp->ifn_type = ifn_type;
541 sctp_ifnp->refcount = 0;
542 sctp_ifnp->vrf = vrf;
543 atomic_add_int(&vrf->refcount, 1);
544 sctp_ifnp->ifn_mtu = SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, addr->sa_family);
545 if (if_name != NULL) {
546 snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", if_name);
548 snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", "unknown");
550 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
551 LIST_INIT(&sctp_ifnp->ifalist);
552 SCTP_IPI_ADDR_WLOCK();
553 LIST_INSERT_HEAD(hash_ifn_head, sctp_ifnp, next_bucket);
554 LIST_INSERT_HEAD(&vrf->ifnlist, sctp_ifnp, next_ifn);
555 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
558 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
560 /* Hmm, it already exists? */
561 if ((sctp_ifap->ifn_p) &&
562 (sctp_ifap->ifn_p->ifn_index == ifn_index)) {
563 SCTPDBG(SCTP_DEBUG_PCB4, "Using existing ifn %s (0x%x) for ifa %p\n",
564 sctp_ifap->ifn_p->ifn_name, ifn_index,
567 /* Remove the created one that we don't want */
568 sctp_delete_ifn(sctp_ifnp, SCTP_ADDR_LOCKED);
570 if (sctp_ifap->localifa_flags & SCTP_BEING_DELETED) {
571 /* easy to solve, just switch back to active */
572 SCTPDBG(SCTP_DEBUG_PCB4, "Clearing deleted ifa flag\n");
573 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
574 sctp_ifap->ifn_p = sctp_ifnp;
575 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
578 SCTP_IPI_ADDR_WUNLOCK();
581 if (sctp_ifap->ifn_p) {
583 * The last IFN gets the address, remove the
586 SCTPDBG(SCTP_DEBUG_PCB4, "Moving ifa %p from %s (0x%x) to %s (0x%x)\n",
587 (void *)sctp_ifap, sctp_ifap->ifn_p->ifn_name,
588 sctp_ifap->ifn_p->ifn_index, if_name,
590 /* remove the address from the old ifn */
591 sctp_remove_ifa_from_ifn(sctp_ifap);
592 /* move the address over to the new ifn */
593 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
594 goto exit_stage_left;
596 /* repair ifnp which was NULL ? */
597 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
598 SCTPDBG(SCTP_DEBUG_PCB4, "Repairing ifn %p for ifa %p\n",
599 (void *)sctp_ifnp, (void *)sctp_ifap);
600 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
602 goto exit_stage_left;
605 SCTP_IPI_ADDR_WUNLOCK();
606 SCTP_MALLOC(sctp_ifap, struct sctp_ifa *, sizeof(struct sctp_ifa), SCTP_M_IFA);
607 if (sctp_ifap == NULL) {
609 panic("No memory for IFA");
613 memset(sctp_ifap, 0, sizeof(struct sctp_ifa));
614 sctp_ifap->ifn_p = sctp_ifnp;
615 atomic_add_int(&sctp_ifnp->refcount, 1);
616 sctp_ifap->vrf_id = vrf_id;
617 sctp_ifap->ifa = ifa;
618 memcpy(&sctp_ifap->address, addr, addr->sa_len);
619 sctp_ifap->localifa_flags = SCTP_ADDR_VALID | SCTP_ADDR_DEFER_USE;
620 sctp_ifap->flags = ifa_flags;
622 switch (sctp_ifap->address.sa.sa_family) {
626 struct sockaddr_in *sin;
628 sin = (struct sockaddr_in *)&sctp_ifap->address.sin;
629 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
630 (IN4_ISLOOPBACK_ADDRESS(&sin->sin_addr))) {
631 sctp_ifap->src_is_loop = 1;
633 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
634 sctp_ifap->src_is_priv = 1;
638 new_ifn_af = AF_INET;
645 /* ok to use deprecated addresses? */
646 struct sockaddr_in6 *sin6;
648 sin6 = (struct sockaddr_in6 *)&sctp_ifap->address.sin6;
649 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
650 (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))) {
651 sctp_ifap->src_is_loop = 1;
653 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
654 sctp_ifap->src_is_priv = 1;
658 new_ifn_af = AF_INET6;
666 hash_of_addr = sctp_get_ifa_hash_val(&sctp_ifap->address.sa);
668 if ((sctp_ifap->src_is_priv == 0) &&
669 (sctp_ifap->src_is_loop == 0)) {
670 sctp_ifap->src_is_glob = 1;
672 SCTP_IPI_ADDR_WLOCK();
673 hash_addr_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
674 LIST_INSERT_HEAD(hash_addr_head, sctp_ifap, next_bucket);
675 sctp_ifap->refcount = 1;
676 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
677 sctp_ifnp->ifa_count++;
678 vrf->total_ifa_count++;
679 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
681 SCTP_REGISTER_INTERFACE(ifn_index, new_ifn_af);
682 sctp_ifnp->registered_af = new_ifn_af;
684 SCTP_IPI_ADDR_WUNLOCK();
687 * Bump up the refcount so that when the timer completes it
688 * will drop back down.
690 struct sctp_laddr *wi;
692 atomic_add_int(&sctp_ifap->refcount, 1);
693 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
696 * Gak, what can we do? We have lost an address
697 * change can you say HOSED?
699 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
700 /* Opps, must decrement the count */
701 sctp_del_addr_from_vrf(vrf_id, addr, ifn_index,
705 SCTP_INCR_LADDR_COUNT();
706 bzero(wi, sizeof(*wi));
707 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
709 wi->action = SCTP_ADD_IP_ADDRESS;
712 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
713 SCTP_WQ_ADDR_UNLOCK();
715 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
716 (struct sctp_inpcb *)NULL,
717 (struct sctp_tcb *)NULL,
718 (struct sctp_nets *)NULL);
720 /* it's ready for use */
721 sctp_ifap->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
727 sctp_del_addr_from_vrf(uint32_t vrf_id, struct sockaddr *addr,
728 uint32_t ifn_index, const char *if_name)
730 struct sctp_vrf *vrf;
731 struct sctp_ifa *sctp_ifap = NULL;
733 SCTP_IPI_ADDR_WLOCK();
734 vrf = sctp_find_vrf(vrf_id);
736 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
740 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: deleting address:", vrf_id);
741 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
743 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
745 /* Validate the delete */
746 if (sctp_ifap->ifn_p) {
750 * The name has priority over the ifn_index
751 * if its given. We do this especially for
752 * panda who might recycle indexes fast.
755 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) == 0) {
756 /* They match its a correct delete */
761 /* last ditch check ifn_index */
762 if (ifn_index == sctp_ifap->ifn_p->ifn_index) {
767 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s does not match addresses\n",
768 ifn_index, ((if_name == NULL) ? "NULL" : if_name));
769 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s - ignoring delete\n",
770 sctp_ifap->ifn_p->ifn_index, sctp_ifap->ifn_p->ifn_name);
771 SCTP_IPI_ADDR_WUNLOCK();
775 SCTPDBG(SCTP_DEBUG_PCB4, "Deleting ifa %p\n", (void *)sctp_ifap);
776 sctp_ifap->localifa_flags &= SCTP_ADDR_VALID;
778 * We don't set the flag. This means that the structure will
779 * hang around in EP's that have bound specific to it until
780 * they close. This gives us TCP like behavior if someone
781 * removes an address (or for that matter adds it right
784 /* sctp_ifap->localifa_flags |= SCTP_BEING_DELETED; */
785 vrf->total_ifa_count--;
786 LIST_REMOVE(sctp_ifap, next_bucket);
787 sctp_remove_ifa_from_ifn(sctp_ifap);
791 SCTPDBG(SCTP_DEBUG_PCB4, "Del Addr-ifn:%d Could not find address:",
793 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
798 SCTP_IPI_ADDR_WUNLOCK();
800 struct sctp_laddr *wi;
802 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
805 * Gak, what can we do? We have lost an address
806 * change can you say HOSED?
808 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
810 /* Oops, must decrement the count */
811 sctp_free_ifa(sctp_ifap);
814 SCTP_INCR_LADDR_COUNT();
815 bzero(wi, sizeof(*wi));
816 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
818 wi->action = SCTP_DEL_IP_ADDRESS;
821 * Should this really be a tailq? As it is we will process
822 * the newest first :-0
824 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
825 SCTP_WQ_ADDR_UNLOCK();
827 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
828 (struct sctp_inpcb *)NULL,
829 (struct sctp_tcb *)NULL,
830 (struct sctp_nets *)NULL);
837 sctp_does_stcb_own_this_addr(struct sctp_tcb *stcb, struct sockaddr *to)
842 int ipv4_local_scope, ipv4_addr_legal;
846 int local_scope, site_scope, ipv6_addr_legal;
849 struct sctp_vrf *vrf;
850 struct sctp_ifn *sctp_ifn;
851 struct sctp_ifa *sctp_ifa;
853 loopback_scope = stcb->asoc.scope.loopback_scope;
855 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
856 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
859 local_scope = stcb->asoc.scope.local_scope;
860 site_scope = stcb->asoc.scope.site_scope;
861 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
864 SCTP_IPI_ADDR_RLOCK();
865 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
867 /* no vrf, no addresses */
868 SCTP_IPI_ADDR_RUNLOCK();
871 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
872 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
873 if ((loopback_scope == 0) &&
874 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
877 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
878 if (sctp_is_addr_restricted(stcb, sctp_ifa) &&
879 (!sctp_is_addr_pending(stcb, sctp_ifa))) {
881 * We allow pending addresses, where
882 * we have sent an asconf-add to be
887 if (sctp_ifa->address.sa.sa_family != to->sa_family) {
890 switch (sctp_ifa->address.sa.sa_family) {
893 if (ipv4_addr_legal) {
894 struct sockaddr_in *sin,
897 sin = &sctp_ifa->address.sin;
898 rsin = (struct sockaddr_in *)to;
899 if ((ipv4_local_scope == 0) &&
900 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
903 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
904 &sin->sin_addr) != 0) {
907 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
908 SCTP_IPI_ADDR_RUNLOCK();
916 if (ipv6_addr_legal) {
917 struct sockaddr_in6 *sin6,
920 sin6 = &sctp_ifa->address.sin6;
921 rsin6 = (struct sockaddr_in6 *)to;
922 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
923 &sin6->sin6_addr) != 0) {
926 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
927 if (local_scope == 0)
929 if (sin6->sin6_scope_id == 0) {
930 if (sa6_recoverscope(sin6) != 0)
934 if ((site_scope == 0) &&
935 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
938 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
939 SCTP_IPI_ADDR_RUNLOCK();
952 struct sctp_laddr *laddr;
954 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
955 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
956 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
959 if (sctp_is_addr_restricted(stcb, laddr->ifa) &&
960 (!sctp_is_addr_pending(stcb, laddr->ifa))) {
962 * We allow pending addresses, where we have
963 * sent an asconf-add to be considered
968 if (laddr->ifa->address.sa.sa_family != to->sa_family) {
971 switch (to->sa_family) {
975 struct sockaddr_in *sin, *rsin;
977 sin = (struct sockaddr_in *)&laddr->ifa->address.sin;
978 rsin = (struct sockaddr_in *)to;
979 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
980 SCTP_IPI_ADDR_RUNLOCK();
989 struct sockaddr_in6 *sin6, *rsin6;
991 sin6 = (struct sockaddr_in6 *)&laddr->ifa->address.sin6;
992 rsin6 = (struct sockaddr_in6 *)to;
993 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
994 SCTP_IPI_ADDR_RUNLOCK();
1008 SCTP_IPI_ADDR_RUNLOCK();
1013 static struct sctp_tcb *
1014 sctp_tcb_special_locate(struct sctp_inpcb **inp_p, struct sockaddr *from,
1015 struct sockaddr *to, struct sctp_nets **netp, uint32_t vrf_id)
1017 /**** ASSUMES THE CALLER holds the INP_INFO_RLOCK */
1019 * If we support the TCP model, then we must now dig through to see
1020 * if we can find our endpoint in the list of tcp ep's.
1022 uint16_t lport, rport;
1023 struct sctppcbhead *ephead;
1024 struct sctp_inpcb *inp;
1025 struct sctp_laddr *laddr;
1026 struct sctp_tcb *stcb;
1027 struct sctp_nets *net;
1029 if ((to == NULL) || (from == NULL)) {
1032 switch (to->sa_family) {
1035 if (from->sa_family == AF_INET) {
1036 lport = ((struct sockaddr_in *)to)->sin_port;
1037 rport = ((struct sockaddr_in *)from)->sin_port;
1045 if (from->sa_family == AF_INET6) {
1046 lport = ((struct sockaddr_in6 *)to)->sin6_port;
1047 rport = ((struct sockaddr_in6 *)from)->sin6_port;
1056 ephead = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
1058 * Ok now for each of the guys in this bucket we must look and see:
1059 * - Does the remote port match. - Does there single association's
1060 * addresses match this address (to). If so we update p_ep to point
1061 * to this ep and return the tcb from it.
1063 LIST_FOREACH(inp, ephead, sctp_hash) {
1064 SCTP_INP_RLOCK(inp);
1065 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1066 SCTP_INP_RUNLOCK(inp);
1069 if (lport != inp->sctp_lport) {
1070 SCTP_INP_RUNLOCK(inp);
1073 switch (to->sa_family) {
1077 struct sockaddr_in *sin;
1079 sin = (struct sockaddr_in *)to;
1080 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
1081 &sin->sin_addr) != 0) {
1082 SCTP_INP_RUNLOCK(inp);
1091 struct sockaddr_in6 *sin6;
1093 sin6 = (struct sockaddr_in6 *)to;
1094 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
1095 &sin6->sin6_addr) != 0) {
1096 SCTP_INP_RUNLOCK(inp);
1103 SCTP_INP_RUNLOCK(inp);
1106 if (inp->def_vrf_id != vrf_id) {
1107 SCTP_INP_RUNLOCK(inp);
1110 /* check to see if the ep has one of the addresses */
1111 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
1112 /* We are NOT bound all, so look further */
1115 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1117 if (laddr->ifa == NULL) {
1118 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n", __FUNCTION__);
1121 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1122 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
1125 if (laddr->ifa->address.sa.sa_family ==
1127 /* see if it matches */
1129 if (from->sa_family == AF_INET) {
1130 struct sockaddr_in *intf_addr,
1133 intf_addr = &laddr->ifa->address.sin;
1134 sin = (struct sockaddr_in *)to;
1135 if (sin->sin_addr.s_addr ==
1136 intf_addr->sin_addr.s_addr) {
1143 if (from->sa_family == AF_INET6) {
1144 struct sockaddr_in6 *intf_addr6;
1145 struct sockaddr_in6 *sin6;
1147 sin6 = (struct sockaddr_in6 *)
1149 intf_addr6 = &laddr->ifa->address.sin6;
1151 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1161 /* This endpoint does not have this address */
1162 SCTP_INP_RUNLOCK(inp);
1167 * Ok if we hit here the ep has the address, does it hold
1170 /* XXX: Why don't we TAILQ_FOREACH through sctp_asoc_list? */
1171 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1173 SCTP_INP_RUNLOCK(inp);
1176 SCTP_TCB_LOCK(stcb);
1177 if (!sctp_does_stcb_own_this_addr(stcb, to)) {
1178 SCTP_TCB_UNLOCK(stcb);
1179 SCTP_INP_RUNLOCK(inp);
1182 if (stcb->rport != rport) {
1183 /* remote port does not match. */
1184 SCTP_TCB_UNLOCK(stcb);
1185 SCTP_INP_RUNLOCK(inp);
1188 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1189 SCTP_TCB_UNLOCK(stcb);
1190 SCTP_INP_RUNLOCK(inp);
1193 if (!sctp_does_stcb_own_this_addr(stcb, to)) {
1194 SCTP_TCB_UNLOCK(stcb);
1195 SCTP_INP_RUNLOCK(inp);
1198 /* Does this TCB have a matching address? */
1199 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1201 if (net->ro._l_addr.sa.sa_family != from->sa_family) {
1202 /* not the same family, can't be a match */
1205 switch (from->sa_family) {
1209 struct sockaddr_in *sin, *rsin;
1211 sin = (struct sockaddr_in *)&net->ro._l_addr;
1212 rsin = (struct sockaddr_in *)from;
1213 if (sin->sin_addr.s_addr ==
1214 rsin->sin_addr.s_addr) {
1220 * Update the endpoint
1224 SCTP_INP_RUNLOCK(inp);
1233 struct sockaddr_in6 *sin6, *rsin6;
1235 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1236 rsin6 = (struct sockaddr_in6 *)from;
1237 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1244 * Update the endpoint
1248 SCTP_INP_RUNLOCK(inp);
1259 SCTP_TCB_UNLOCK(stcb);
1260 SCTP_INP_RUNLOCK(inp);
1269 * 1) If I return a NULL you must decrement any INP ref cnt. 2) If I find an
1270 * stcb, both will be locked (locked_tcb and stcb) but decrement will be done
1271 * (if locked == NULL). 3) Decrement happens on return ONLY if locked ==
1276 sctp_findassociation_ep_addr(struct sctp_inpcb **inp_p, struct sockaddr *remote,
1277 struct sctp_nets **netp, struct sockaddr *local, struct sctp_tcb *locked_tcb)
1279 struct sctpasochead *head;
1280 struct sctp_inpcb *inp;
1281 struct sctp_tcb *stcb = NULL;
1282 struct sctp_nets *net;
1286 switch (remote->sa_family) {
1289 rport = (((struct sockaddr_in *)remote)->sin_port);
1294 rport = (((struct sockaddr_in6 *)remote)->sin6_port);
1302 * UN-lock so we can do proper locking here this occurs when
1303 * called from load_addresses_from_init.
1305 atomic_add_int(&locked_tcb->asoc.refcnt, 1);
1306 SCTP_TCB_UNLOCK(locked_tcb);
1308 SCTP_INP_INFO_RLOCK();
1309 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
1310 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
1312 * Now either this guy is our listener or it's the
1313 * connector. If it is the one that issued the connect, then
1314 * it's only chance is to be the first TCB in the list. If
1315 * it is the acceptor, then do the special_lookup to hash
1316 * and find the real inp.
1318 if ((inp->sctp_socket) && (inp->sctp_socket->so_qlimit)) {
1319 /* to is peer addr, from is my addr */
1320 stcb = sctp_tcb_special_locate(inp_p, remote, local,
1321 netp, inp->def_vrf_id);
1322 if ((stcb != NULL) && (locked_tcb == NULL)) {
1323 /* we have a locked tcb, lower refcount */
1324 SCTP_INP_DECR_REF(inp);
1326 if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
1327 SCTP_INP_RLOCK(locked_tcb->sctp_ep);
1328 SCTP_TCB_LOCK(locked_tcb);
1329 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1330 SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
1332 SCTP_INP_INFO_RUNLOCK();
1335 SCTP_INP_WLOCK(inp);
1336 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1339 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1343 SCTP_TCB_LOCK(stcb);
1345 if (stcb->rport != rport) {
1346 /* remote port does not match. */
1347 SCTP_TCB_UNLOCK(stcb);
1350 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1351 SCTP_TCB_UNLOCK(stcb);
1354 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1355 SCTP_TCB_UNLOCK(stcb);
1358 /* now look at the list of remote addresses */
1359 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1361 if (net == (TAILQ_NEXT(net, sctp_next))) {
1362 panic("Corrupt net list");
1365 if (net->ro._l_addr.sa.sa_family !=
1366 remote->sa_family) {
1367 /* not the same family */
1370 switch (remote->sa_family) {
1374 struct sockaddr_in *sin,
1377 sin = (struct sockaddr_in *)
1379 rsin = (struct sockaddr_in *)remote;
1380 if (sin->sin_addr.s_addr ==
1381 rsin->sin_addr.s_addr) {
1386 if (locked_tcb == NULL) {
1387 SCTP_INP_DECR_REF(inp);
1388 } else if (locked_tcb != stcb) {
1389 SCTP_TCB_LOCK(locked_tcb);
1392 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1394 SCTP_INP_WUNLOCK(inp);
1395 SCTP_INP_INFO_RUNLOCK();
1404 struct sockaddr_in6 *sin6,
1407 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1408 rsin6 = (struct sockaddr_in6 *)remote;
1409 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1415 if (locked_tcb == NULL) {
1416 SCTP_INP_DECR_REF(inp);
1417 } else if (locked_tcb != stcb) {
1418 SCTP_TCB_LOCK(locked_tcb);
1421 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1423 SCTP_INP_WUNLOCK(inp);
1424 SCTP_INP_INFO_RUNLOCK();
1435 SCTP_TCB_UNLOCK(stcb);
1438 SCTP_INP_WLOCK(inp);
1439 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1442 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport,
1443 inp->sctp_hashmark)];
1447 LIST_FOREACH(stcb, head, sctp_tcbhash) {
1448 if (stcb->rport != rport) {
1449 /* remote port does not match */
1452 SCTP_TCB_LOCK(stcb);
1453 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1454 SCTP_TCB_UNLOCK(stcb);
1457 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1458 SCTP_TCB_UNLOCK(stcb);
1461 /* now look at the list of remote addresses */
1462 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1464 if (net == (TAILQ_NEXT(net, sctp_next))) {
1465 panic("Corrupt net list");
1468 if (net->ro._l_addr.sa.sa_family !=
1469 remote->sa_family) {
1470 /* not the same family */
1473 switch (remote->sa_family) {
1477 struct sockaddr_in *sin,
1480 sin = (struct sockaddr_in *)
1482 rsin = (struct sockaddr_in *)remote;
1483 if (sin->sin_addr.s_addr ==
1484 rsin->sin_addr.s_addr) {
1489 if (locked_tcb == NULL) {
1490 SCTP_INP_DECR_REF(inp);
1491 } else if (locked_tcb != stcb) {
1492 SCTP_TCB_LOCK(locked_tcb);
1495 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1497 SCTP_INP_WUNLOCK(inp);
1498 SCTP_INP_INFO_RUNLOCK();
1507 struct sockaddr_in6 *sin6,
1510 sin6 = (struct sockaddr_in6 *)
1512 rsin6 = (struct sockaddr_in6 *)remote;
1513 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1519 if (locked_tcb == NULL) {
1520 SCTP_INP_DECR_REF(inp);
1521 } else if (locked_tcb != stcb) {
1522 SCTP_TCB_LOCK(locked_tcb);
1525 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1527 SCTP_INP_WUNLOCK(inp);
1528 SCTP_INP_INFO_RUNLOCK();
1539 SCTP_TCB_UNLOCK(stcb);
1543 /* clean up for returning null */
1545 SCTP_TCB_LOCK(locked_tcb);
1546 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1548 SCTP_INP_WUNLOCK(inp);
1549 SCTP_INP_INFO_RUNLOCK();
1556 * Find an association for a specific endpoint using the association id given
1557 * out in the COMM_UP notification
1560 sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1563 * Use my the assoc_id to find a endpoint
1565 struct sctpasochead *head;
1566 struct sctp_tcb *stcb;
1570 SCTP_PRINTF("TSNH ep_associd\n");
1573 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1574 SCTP_PRINTF("TSNH ep_associd0\n");
1577 id = (uint32_t) asoc_id;
1578 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
1580 /* invalid id TSNH */
1581 SCTP_PRINTF("TSNH ep_associd1\n");
1584 LIST_FOREACH(stcb, head, sctp_tcbasocidhash) {
1585 if (stcb->asoc.assoc_id == id) {
1586 if (inp != stcb->sctp_ep) {
1588 * some other guy has the same id active (id
1591 SCTP_PRINTF("TSNH ep_associd2\n");
1594 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1598 SCTP_TCB_LOCK(stcb);
1608 sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1610 struct sctp_tcb *stcb;
1612 SCTP_INP_RLOCK(inp);
1613 stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
1614 SCTP_INP_RUNLOCK(inp);
1620 * Endpoint probe expects that the INP_INFO is locked.
1622 static struct sctp_inpcb *
1623 sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head,
1624 uint16_t lport, uint32_t vrf_id)
1626 struct sctp_inpcb *inp;
1627 struct sctp_laddr *laddr;
1630 struct sockaddr_in *sin;
1634 struct sockaddr_in6 *sin6;
1635 struct sockaddr_in6 *intf_addr6;
1646 switch (nam->sa_family) {
1649 sin = (struct sockaddr_in *)nam;
1654 sin6 = (struct sockaddr_in6 *)nam;
1658 /* unsupported family */
1665 LIST_FOREACH(inp, head, sctp_hash) {
1666 SCTP_INP_RLOCK(inp);
1667 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1668 SCTP_INP_RUNLOCK(inp);
1671 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) &&
1672 (inp->sctp_lport == lport)) {
1674 switch (nam->sa_family) {
1677 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1678 SCTP_IPV6_V6ONLY(inp)) {
1680 * IPv4 on a IPv6 socket with ONLY
1683 SCTP_INP_RUNLOCK(inp);
1686 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
1687 &sin->sin_addr) != 0) {
1688 SCTP_INP_RUNLOCK(inp);
1696 * A V6 address and the endpoint is NOT
1699 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
1700 SCTP_INP_RUNLOCK(inp);
1703 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
1704 &sin6->sin6_addr) != 0) {
1705 SCTP_INP_RUNLOCK(inp);
1713 /* does a VRF id match? */
1715 if (inp->def_vrf_id == vrf_id)
1718 SCTP_INP_RUNLOCK(inp);
1723 SCTP_INP_RUNLOCK(inp);
1725 switch (nam->sa_family) {
1728 if (sin->sin_addr.s_addr == INADDR_ANY) {
1729 /* Can't hunt for one that has no address specified */
1736 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1737 /* Can't hunt for one that has no address specified */
1746 * ok, not bound to all so see if we can find a EP bound to this
1749 LIST_FOREACH(inp, head, sctp_hash) {
1750 SCTP_INP_RLOCK(inp);
1751 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1752 SCTP_INP_RUNLOCK(inp);
1755 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
1756 SCTP_INP_RUNLOCK(inp);
1760 * Ok this could be a likely candidate, look at all of its
1763 if (inp->sctp_lport != lport) {
1764 SCTP_INP_RUNLOCK(inp);
1767 /* does a VRF id match? */
1769 if (inp->def_vrf_id == vrf_id)
1773 SCTP_INP_RUNLOCK(inp);
1776 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1777 if (laddr->ifa == NULL) {
1778 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
1782 SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ",
1783 (void *)laddr->ifa);
1784 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1785 SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n");
1788 if (laddr->ifa->address.sa.sa_family == nam->sa_family) {
1789 /* possible, see if it matches */
1790 switch (nam->sa_family) {
1793 if (sin->sin_addr.s_addr ==
1794 laddr->ifa->address.sin.sin_addr.s_addr) {
1795 SCTP_INP_RUNLOCK(inp);
1802 intf_addr6 = &laddr->ifa->address.sin6;
1803 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1805 SCTP_INP_RUNLOCK(inp);
1813 SCTP_INP_RUNLOCK(inp);
1819 static struct sctp_inpcb *
1820 sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
1822 struct sctppcbhead *head;
1823 struct sctp_inpcb *t_inp;
1826 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1827 SCTP_BASE_INFO(hashmark))];
1828 LIST_FOREACH(t_inp, head, sctp_hash) {
1829 if (t_inp->sctp_lport != lport) {
1832 /* is it in the VRF in question */
1834 if (t_inp->def_vrf_id == vrf_id)
1839 /* This one is in use. */
1840 /* check the v6/v4 binding issue */
1841 if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1842 SCTP_IPV6_V6ONLY(t_inp)) {
1843 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1844 /* collision in V6 space */
1847 /* inp is BOUND_V4 no conflict */
1850 } else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1851 /* t_inp is bound v4 and v6, conflict always */
1854 /* t_inp is bound only V4 */
1855 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1856 SCTP_IPV6_V6ONLY(inp)) {
1860 /* else fall through to conflict */
1869 sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
1871 /* For 1-2-1 with port reuse */
1872 struct sctppcbhead *head;
1873 struct sctp_inpcb *tinp;
1875 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
1876 /* only works with port reuse on */
1879 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) {
1882 SCTP_INP_RUNLOCK(inp);
1883 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport,
1884 SCTP_BASE_INFO(hashmark))];
1885 /* Kick out all non-listeners to the TCP hash */
1886 LIST_FOREACH(tinp, head, sctp_hash) {
1887 if (tinp->sctp_lport != inp->sctp_lport) {
1890 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1893 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
1896 if (tinp->sctp_socket->so_qlimit) {
1899 SCTP_INP_WLOCK(tinp);
1900 LIST_REMOVE(tinp, sctp_hash);
1901 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))];
1902 tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
1903 LIST_INSERT_HEAD(head, tinp, sctp_hash);
1904 SCTP_INP_WUNLOCK(tinp);
1906 SCTP_INP_WLOCK(inp);
1907 /* Pull from where he was */
1908 LIST_REMOVE(inp, sctp_hash);
1909 inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL;
1910 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))];
1911 LIST_INSERT_HEAD(head, inp, sctp_hash);
1912 SCTP_INP_WUNLOCK(inp);
1913 SCTP_INP_RLOCK(inp);
1919 sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock,
1923 * First we check the hash table to see if someone has this port
1924 * bound with just the port.
1926 struct sctp_inpcb *inp;
1927 struct sctppcbhead *head;
1932 struct sockaddr_in *sin;
1936 struct sockaddr_in6 *sin6;
1940 switch (nam->sa_family) {
1943 sin = (struct sockaddr_in *)nam;
1944 lport = sin->sin_port;
1949 sin6 = (struct sockaddr_in6 *)nam;
1950 lport = sin6->sin6_port;
1957 * I could cheat here and just cast to one of the types but we will
1958 * do it right. It also provides the check against an Unsupported
1961 /* Find the head of the ALLADDR chain */
1962 if (have_lock == 0) {
1963 SCTP_INP_INFO_RLOCK();
1965 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1966 SCTP_BASE_INFO(hashmark))];
1967 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1970 * If the TCP model exists it could be that the main listening
1971 * endpoint is gone but there still exists a connected socket for
1972 * this guy. If so we can return the first one that we find. This
1973 * may NOT be the correct one so the caller should be wary on the
1974 * returned INP. Currently the only caller that sets find_tcp_pool
1975 * is in bindx where we are verifying that a user CAN bind the
1976 * address. He either has bound it already, or someone else has, or
1977 * its open to bind, so this is good enough.
1979 if (inp == NULL && find_tcp_pool) {
1980 for (i = 0; i < SCTP_BASE_INFO(hashtcpmark) + 1; i++) {
1981 head = &SCTP_BASE_INFO(sctp_tcpephash)[i];
1982 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1989 SCTP_INP_INCR_REF(inp);
1991 if (have_lock == 0) {
1992 SCTP_INP_INFO_RUNLOCK();
1999 * Find an association for an endpoint with the pointer to whom you want to
2000 * send to and the endpoint pointer. The address can be IPv4 or IPv6. We may
2001 * need to change the *to to some other struct like a mbuf...
2004 sctp_findassociation_addr_sa(struct sockaddr *from, struct sockaddr *to,
2005 struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool,
2008 struct sctp_inpcb *inp = NULL;
2009 struct sctp_tcb *stcb;
2011 SCTP_INP_INFO_RLOCK();
2012 if (find_tcp_pool) {
2013 if (inp_p != NULL) {
2014 stcb = sctp_tcb_special_locate(inp_p, from, to, netp,
2017 stcb = sctp_tcb_special_locate(&inp, from, to, netp,
2021 SCTP_INP_INFO_RUNLOCK();
2025 inp = sctp_pcb_findep(to, 0, 1, vrf_id);
2026 if (inp_p != NULL) {
2029 SCTP_INP_INFO_RUNLOCK();
2034 * ok, we have an endpoint, now lets find the assoc for it (if any)
2035 * we now place the source address or from in the to of the find
2036 * endpoint call. Since in reality this chain is used from the
2037 * inbound packet side.
2039 if (inp_p != NULL) {
2040 stcb = sctp_findassociation_ep_addr(inp_p, from, netp, to,
2043 stcb = sctp_findassociation_ep_addr(&inp, from, netp, to,
2051 * This routine will grub through the mbuf that is a INIT or INIT-ACK and
2052 * find all addresses that the sender has specified in any address list. Each
2053 * address will be used to lookup the TCB and see if one exits.
2055 static struct sctp_tcb *
2056 sctp_findassociation_special_addr(struct mbuf *m, int offset,
2057 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp,
2058 struct sockaddr *dst)
2060 struct sctp_paramhdr *phdr, parm_buf;
2062 #if defined(INET) || defined(INET6)
2063 struct sctp_tcb *stcb;
2070 struct sockaddr_in sin4;
2074 struct sockaddr_in6 sin6;
2079 memset(&sin4, 0, sizeof(sin4));
2080 sin4.sin_len = sizeof(sin4);
2081 sin4.sin_family = AF_INET;
2082 sin4.sin_port = sh->src_port;
2085 memset(&sin6, 0, sizeof(sin6));
2086 sin6.sin6_len = sizeof(sin6);
2087 sin6.sin6_family = AF_INET6;
2088 sin6.sin6_port = sh->src_port;
2091 offset += sizeof(struct sctp_init_chunk);
2093 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
2094 while (phdr != NULL) {
2095 /* now we must see if we want the parameter */
2096 #if defined(INET) || defined(INET6)
2097 ptype = ntohs(phdr->param_type);
2099 plen = ntohs(phdr->param_length);
2104 if (ptype == SCTP_IPV4_ADDRESS &&
2105 plen == sizeof(struct sctp_ipv4addr_param)) {
2106 /* Get the rest of the address */
2107 struct sctp_ipv4addr_param ip4_parm, *p4;
2109 phdr = sctp_get_next_param(m, offset,
2110 (struct sctp_paramhdr *)&ip4_parm, min(plen, sizeof(ip4_parm)));
2114 p4 = (struct sctp_ipv4addr_param *)phdr;
2115 memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr));
2117 stcb = sctp_findassociation_ep_addr(inp_p,
2118 (struct sockaddr *)&sin4, netp, dst, NULL);
2125 if (ptype == SCTP_IPV6_ADDRESS &&
2126 plen == sizeof(struct sctp_ipv6addr_param)) {
2127 /* Get the rest of the address */
2128 struct sctp_ipv6addr_param ip6_parm, *p6;
2130 phdr = sctp_get_next_param(m, offset,
2131 (struct sctp_paramhdr *)&ip6_parm, min(plen, sizeof(ip6_parm)));
2135 p6 = (struct sctp_ipv6addr_param *)phdr;
2136 memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr));
2138 stcb = sctp_findassociation_ep_addr(inp_p,
2139 (struct sockaddr *)&sin6, netp, dst, NULL);
2145 offset += SCTP_SIZE32(plen);
2146 phdr = sctp_get_next_param(m, offset, &parm_buf,
2152 static struct sctp_tcb *
2153 sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag,
2154 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport,
2155 uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
2158 * Use my vtag to hash. If we find it we then verify the source addr
2159 * is in the assoc. If all goes well we save a bit on rec of a
2162 struct sctpasochead *head;
2163 struct sctp_nets *net;
2164 struct sctp_tcb *stcb;
2166 SCTP_INP_INFO_RLOCK();
2167 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag,
2168 SCTP_BASE_INFO(hashasocmark))];
2171 SCTP_INP_INFO_RUNLOCK();
2174 LIST_FOREACH(stcb, head, sctp_asocs) {
2175 SCTP_INP_RLOCK(stcb->sctp_ep);
2176 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
2177 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2180 if (stcb->sctp_ep->def_vrf_id != vrf_id) {
2181 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2184 SCTP_TCB_LOCK(stcb);
2185 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2186 if (stcb->asoc.my_vtag == vtag) {
2188 if (stcb->rport != rport) {
2189 SCTP_TCB_UNLOCK(stcb);
2192 if (stcb->sctp_ep->sctp_lport != lport) {
2193 SCTP_TCB_UNLOCK(stcb);
2196 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
2197 SCTP_TCB_UNLOCK(stcb);
2200 /* RRS:Need toaddr check here */
2201 if (sctp_does_stcb_own_this_addr(stcb, to) == 0) {
2202 /* Endpoint does not own this address */
2203 SCTP_TCB_UNLOCK(stcb);
2208 * If we have both vtags that's all we match
2211 if (stcb->asoc.peer_vtag == remote_tag) {
2213 * If both tags match we consider it
2214 * conclusive and check NO
2215 * source/destination addresses
2220 if (skip_src_check) {
2223 *netp = sctp_findnet(stcb, from);
2225 *netp = NULL; /* unknown */
2228 *inp_p = stcb->sctp_ep;
2229 SCTP_INP_INFO_RUNLOCK();
2232 net = sctp_findnet(stcb, from);
2236 SCTP_STAT_INCR(sctps_vtagexpress);
2237 *inp_p = stcb->sctp_ep;
2238 SCTP_INP_INFO_RUNLOCK();
2242 * not him, this should only happen in rare
2243 * cases so I peg it.
2245 SCTP_STAT_INCR(sctps_vtagbogus);
2248 SCTP_TCB_UNLOCK(stcb);
2250 SCTP_INP_INFO_RUNLOCK();
2256 * Find an association with the pointer to the inbound IP packet. This can be
2257 * a IPv4 or IPv6 packet.
2260 sctp_findassociation_addr(struct mbuf *m, int offset,
2261 struct sockaddr *src, struct sockaddr *dst,
2262 struct sctphdr *sh, struct sctp_chunkhdr *ch,
2263 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2266 struct sctp_tcb *stcb;
2267 struct sctp_inpcb *inp;
2270 /* we only go down this path if vtag is non-zero */
2271 stcb = sctp_findassoc_by_vtag(src, dst, ntohl(sh->v_tag),
2272 inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0);
2278 if ((ch->chunk_type != SCTP_INITIATION) &&
2279 (ch->chunk_type != SCTP_INITIATION_ACK) &&
2280 (ch->chunk_type != SCTP_COOKIE_ACK) &&
2281 (ch->chunk_type != SCTP_COOKIE_ECHO)) {
2282 /* Other chunk types go to the tcp pool. */
2286 stcb = sctp_findassociation_addr_sa(src, dst, inp_p, netp,
2287 find_tcp_pool, vrf_id);
2290 stcb = sctp_findassociation_addr_sa(src, dst, &inp, netp,
2291 find_tcp_pool, vrf_id);
2293 SCTPDBG(SCTP_DEBUG_PCB1, "stcb:%p inp:%p\n", (void *)stcb, (void *)inp);
2294 if (stcb == NULL && inp) {
2295 /* Found a EP but not this address */
2296 if ((ch->chunk_type == SCTP_INITIATION) ||
2297 (ch->chunk_type == SCTP_INITIATION_ACK)) {
2299 * special hook, we do NOT return linp or an
2300 * association that is linked to an existing
2301 * association that is under the TCP pool (i.e. no
2302 * listener exists). The endpoint finding routine
2303 * will always find a listener before examining the
2306 if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
2312 stcb = sctp_findassociation_special_addr(m,
2313 offset, sh, &inp, netp, dst);
2314 if (inp_p != NULL) {
2319 SCTPDBG(SCTP_DEBUG_PCB1, "stcb is %p\n", (void *)stcb);
2324 * lookup an association by an ASCONF lookup address.
2325 * if the lookup address is 0.0.0.0 or ::0, use the vtag to do the lookup
2328 sctp_findassociation_ep_asconf(struct mbuf *m, int offset,
2329 struct sockaddr *dst, struct sctphdr *sh,
2330 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2332 struct sctp_tcb *stcb;
2333 struct sockaddr_storage remote_store;
2334 struct sctp_paramhdr parm_buf, *phdr;
2336 int zero_address = 0;
2339 struct sockaddr_in *sin;
2343 struct sockaddr_in6 *sin6;
2347 memset(&remote_store, 0, sizeof(remote_store));
2348 phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk),
2349 &parm_buf, sizeof(struct sctp_paramhdr));
2351 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n",
2355 ptype = (int)((uint32_t) ntohs(phdr->param_type));
2356 /* get the correlation address */
2359 case SCTP_IPV6_ADDRESS:
2361 /* ipv6 address param */
2362 struct sctp_ipv6addr_param *p6, p6_buf;
2364 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) {
2367 p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m,
2368 offset + sizeof(struct sctp_asconf_chunk),
2369 &p6_buf.ph, sizeof(*p6));
2371 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n",
2375 sin6 = (struct sockaddr_in6 *)&remote_store;
2376 sin6->sin6_family = AF_INET6;
2377 sin6->sin6_len = sizeof(*sin6);
2378 sin6->sin6_port = sh->src_port;
2379 memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr));
2380 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
2386 case SCTP_IPV4_ADDRESS:
2388 /* ipv4 address param */
2389 struct sctp_ipv4addr_param *p4, p4_buf;
2391 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) {
2394 p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m,
2395 offset + sizeof(struct sctp_asconf_chunk),
2396 &p4_buf.ph, sizeof(*p4));
2398 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n",
2402 sin = (struct sockaddr_in *)&remote_store;
2403 sin->sin_family = AF_INET;
2404 sin->sin_len = sizeof(*sin);
2405 sin->sin_port = sh->src_port;
2406 memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr));
2407 if (sin->sin_addr.s_addr == INADDR_ANY)
2413 /* invalid address param type */
2418 stcb = sctp_findassoc_by_vtag(NULL, dst, ntohl(sh->v_tag), inp_p,
2419 netp, sh->src_port, sh->dest_port, 1, vrf_id, 0);
2421 SCTP_INP_DECR_REF(*inp_p);
2424 stcb = sctp_findassociation_ep_addr(inp_p,
2425 (struct sockaddr *)&remote_store, netp,
2433 * allocate a sctp_inpcb and setup a temporary binding to a port/all
2434 * addresses. This way if we don't get a bind we by default pick a ephemeral
2435 * port with all addresses bound.
2438 sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
2441 * we get called when a new endpoint starts up. We need to allocate
2442 * the sctp_inpcb structure from the zone and init it. Mark it as
2443 * unbound and find a port that we can use as an ephemeral with
2444 * INADDR_ANY. If the user binds later no problem we can then add in
2445 * the specific addresses. And setup the default parameters for the
2449 struct sctp_inpcb *inp;
2451 struct timeval time;
2452 sctp_sharedkey_t *null_key;
2456 SCTP_INP_INFO_WLOCK();
2457 inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb);
2459 SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n");
2460 SCTP_INP_INFO_WUNLOCK();
2461 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2465 bzero(inp, sizeof(*inp));
2467 /* bump generations */
2468 /* setup socket pointers */
2469 inp->sctp_socket = so;
2470 inp->ip_inp.inp.inp_socket = so;
2471 inp->ip_inp.inp.inp_cred = crhold(so->so_cred);
2473 if (INP_SOCKAF(so) == AF_INET6) {
2474 if (MODULE_GLOBAL(ip6_auto_flowlabel)) {
2475 inp->ip_inp.inp.inp_flags |= IN6P_AUTOFLOWLABEL;
2477 if (MODULE_GLOBAL(ip6_v6only)) {
2478 inp->ip_inp.inp.inp_flags |= IN6P_IPV6_V6ONLY;
2482 inp->sctp_associd_counter = 1;
2483 inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT;
2484 inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
2485 inp->sctp_cmt_on_off = SCTP_BASE_SYSCTL(sctp_cmt_on_off);
2486 inp->ecn_supported = (uint8_t) SCTP_BASE_SYSCTL(sctp_ecn_enable);
2487 inp->prsctp_supported = (uint8_t) SCTP_BASE_SYSCTL(sctp_pr_enable);
2488 inp->auth_supported = (uint8_t) SCTP_BASE_SYSCTL(sctp_auth_enable);
2489 inp->asconf_supported = (uint8_t) SCTP_BASE_SYSCTL(sctp_asconf_enable);
2490 inp->reconfig_supported = (uint8_t) SCTP_BASE_SYSCTL(sctp_reconfig_enable);
2491 inp->nrsack_supported = (uint8_t) SCTP_BASE_SYSCTL(sctp_nrsack_enable);
2492 inp->pktdrop_supported = (uint8_t) SCTP_BASE_SYSCTL(sctp_pktdrop_enable);
2493 /* init the small hash table we use to track asocid <-> tcb */
2494 inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark);
2495 if (inp->sctp_asocidhash == NULL) {
2496 crfree(inp->ip_inp.inp.inp_cred);
2497 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2498 SCTP_INP_INFO_WUNLOCK();
2503 struct inpcbpolicy *pcb_sp = NULL;
2505 error = ipsec_init_policy(so, &pcb_sp);
2506 /* Arrange to share the policy */
2507 inp->ip_inp.inp.inp_sp = pcb_sp;
2508 ((struct in6pcb *)(&inp->ip_inp.inp))->in6p_sp = pcb_sp;
2511 crfree(inp->ip_inp.inp.inp_cred);
2512 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2513 SCTP_INP_INFO_WUNLOCK();
2517 SCTP_INCR_EP_COUNT();
2518 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
2519 SCTP_INP_INFO_WUNLOCK();
2521 so->so_pcb = (caddr_t)inp;
2523 if (SCTP_SO_TYPE(so) == SOCK_SEQPACKET) {
2524 /* UDP style socket */
2525 inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
2526 SCTP_PCB_FLAGS_UNBOUND);
2527 /* Be sure it is NON-BLOCKING IO for UDP */
2528 /* SCTP_SET_SO_NBIO(so); */
2529 } else if (SCTP_SO_TYPE(so) == SOCK_STREAM) {
2530 /* TCP style socket */
2531 inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
2532 SCTP_PCB_FLAGS_UNBOUND);
2533 /* Be sure we have blocking IO by default */
2534 SCTP_CLEAR_SO_NBIO(so);
2537 * unsupported socket type (RAW, etc)- in case we missed it
2540 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
2542 crfree(inp->ip_inp.inp.inp_cred);
2543 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2544 return (EOPNOTSUPP);
2546 if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) {
2547 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2548 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2549 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) {
2550 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2551 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2552 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) {
2553 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2554 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2556 inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize),
2557 &inp->sctp_hashmark);
2558 if (inp->sctp_tcbhash == NULL) {
2559 SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
2560 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2562 crfree(inp->ip_inp.inp.inp_cred);
2563 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2566 inp->def_vrf_id = vrf_id;
2568 SCTP_INP_INFO_WLOCK();
2569 SCTP_INP_LOCK_INIT(inp);
2570 INP_LOCK_INIT(&inp->ip_inp.inp, "inp", "sctpinp");
2571 SCTP_INP_READ_INIT(inp);
2572 SCTP_ASOC_CREATE_LOCK_INIT(inp);
2573 /* lock the new ep */
2574 SCTP_INP_WLOCK(inp);
2576 /* add it to the info area */
2577 LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list);
2578 SCTP_INP_INFO_WUNLOCK();
2580 TAILQ_INIT(&inp->read_queue);
2581 LIST_INIT(&inp->sctp_addr_list);
2583 LIST_INIT(&inp->sctp_asoc_list);
2585 #ifdef SCTP_TRACK_FREED_ASOCS
2587 LIST_INIT(&inp->sctp_asoc_free_list);
2589 /* Init the timer structure for signature change */
2590 SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer);
2591 inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE;
2593 /* now init the actual endpoint default data */
2596 /* setup the base timeout information */
2597 m->sctp_timeoutticks[SCTP_TIMER_SEND] = SEC_TO_TICKS(SCTP_SEND_SEC); /* needed ? */
2598 m->sctp_timeoutticks[SCTP_TIMER_INIT] = SEC_TO_TICKS(SCTP_INIT_SEC); /* needed ? */
2599 m->sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default));
2600 m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default));
2601 m->sctp_timeoutticks[SCTP_TIMER_PMTU] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default));
2602 m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default));
2603 m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default));
2604 /* all max/min max are in ms */
2605 m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default);
2606 m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default);
2607 m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default);
2608 m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default);
2609 m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default);
2610 m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default);
2611 m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default);
2612 m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default);
2613 m->def_net_pf_threshold = SCTP_BASE_SYSCTL(sctp_path_pf_threshold);
2614 m->sctp_sws_sender = SCTP_SWS_SENDER_DEF;
2615 m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF;
2616 m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default);
2617 m->fr_max_burst = SCTP_BASE_SYSCTL(sctp_fr_max_burst_default);
2619 m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module);
2620 m->sctp_default_ss_module = SCTP_BASE_SYSCTL(sctp_default_ss_module);
2621 m->max_open_streams_intome = SCTP_BASE_SYSCTL(sctp_nr_incoming_streams_default);
2622 /* number of streams to pre-open on a association */
2623 m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default);
2625 /* Add adaptation cookie */
2626 m->adaptation_layer_indicator = 0;
2627 m->adaptation_layer_indicator_provided = 0;
2629 /* seed random number generator */
2630 m->random_counter = 1;
2631 m->store_at = SCTP_SIGNATURE_SIZE;
2632 SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers));
2633 sctp_fill_random_store(m);
2635 /* Minimum cookie size */
2636 m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) +
2637 sizeof(struct sctp_state_cookie);
2638 m->size_of_a_cookie += SCTP_SIGNATURE_SIZE;
2640 /* Setup the initial secret */
2641 (void)SCTP_GETTIME_TIMEVAL(&time);
2642 m->time_of_secret_change = time.tv_sec;
2644 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
2645 m->secret_key[0][i] = sctp_select_initial_TSN(m);
2647 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
2649 /* How long is a cookie good for ? */
2650 m->def_cookie_life = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default));
2652 * Initialize authentication parameters
2654 m->local_hmacs = sctp_default_supported_hmaclist();
2655 m->local_auth_chunks = sctp_alloc_chunklist();
2656 if (inp->asconf_supported) {
2657 sctp_auth_add_chunk(SCTP_ASCONF, m->local_auth_chunks);
2658 sctp_auth_add_chunk(SCTP_ASCONF_ACK, m->local_auth_chunks);
2660 m->default_dscp = 0;
2662 m->default_flowlabel = 0;
2664 m->port = 0; /* encapsulation disabled by default */
2665 LIST_INIT(&m->shared_keys);
2666 /* add default NULL key as key id 0 */
2667 null_key = sctp_alloc_sharedkey();
2668 sctp_insert_sharedkey(&m->shared_keys, null_key);
2669 SCTP_INP_WUNLOCK(inp);
2670 #ifdef SCTP_LOG_CLOSING
2671 sctp_log_closing(inp, NULL, 12);
2678 sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp,
2679 struct sctp_tcb *stcb)
2681 struct sctp_nets *net;
2682 uint16_t lport, rport;
2683 struct sctppcbhead *head;
2684 struct sctp_laddr *laddr, *oladdr;
2686 atomic_add_int(&stcb->asoc.refcnt, 1);
2687 SCTP_TCB_UNLOCK(stcb);
2688 SCTP_INP_INFO_WLOCK();
2689 SCTP_INP_WLOCK(old_inp);
2690 SCTP_INP_WLOCK(new_inp);
2691 SCTP_TCB_LOCK(stcb);
2692 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2694 new_inp->sctp_ep.time_of_secret_change =
2695 old_inp->sctp_ep.time_of_secret_change;
2696 memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key,
2697 sizeof(old_inp->sctp_ep.secret_key));
2698 new_inp->sctp_ep.current_secret_number =
2699 old_inp->sctp_ep.current_secret_number;
2700 new_inp->sctp_ep.last_secret_number =
2701 old_inp->sctp_ep.last_secret_number;
2702 new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie;
2704 /* make it so new data pours into the new socket */
2705 stcb->sctp_socket = new_inp->sctp_socket;
2706 stcb->sctp_ep = new_inp;
2708 /* Copy the port across */
2709 lport = new_inp->sctp_lport = old_inp->sctp_lport;
2710 rport = stcb->rport;
2711 /* Pull the tcb from the old association */
2712 LIST_REMOVE(stcb, sctp_tcbhash);
2713 LIST_REMOVE(stcb, sctp_tcblist);
2714 if (stcb->asoc.in_asocid_hash) {
2715 LIST_REMOVE(stcb, sctp_tcbasocidhash);
2717 /* Now insert the new_inp into the TCP connected hash */
2718 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
2720 LIST_INSERT_HEAD(head, new_inp, sctp_hash);
2721 /* Its safe to access */
2722 new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
2724 /* Now move the tcb into the endpoint list */
2725 LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist);
2727 * Question, do we even need to worry about the ep-hash since we
2728 * only have one connection? Probably not :> so lets get rid of it
2729 * and not suck up any kernel memory in that.
2731 if (stcb->asoc.in_asocid_hash) {
2732 struct sctpasochead *lhd;
2734 lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id,
2735 new_inp->hashasocidmark)];
2736 LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash);
2738 /* Ok. Let's restart timer. */
2739 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2740 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp,
2744 SCTP_INP_INFO_WUNLOCK();
2745 if (new_inp->sctp_tcbhash != NULL) {
2746 SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark);
2747 new_inp->sctp_tcbhash = NULL;
2749 if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2750 /* Subset bound, so copy in the laddr list from the old_inp */
2751 LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) {
2752 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2753 if (laddr == NULL) {
2755 * Gak, what can we do? This assoc is really
2756 * HOSED. We probably should send an abort
2759 SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n");
2762 SCTP_INCR_LADDR_COUNT();
2763 bzero(laddr, sizeof(*laddr));
2764 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2765 laddr->ifa = oladdr->ifa;
2766 atomic_add_int(&laddr->ifa->refcount, 1);
2767 LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr,
2769 new_inp->laddr_count++;
2770 if (oladdr == stcb->asoc.last_used_address) {
2771 stcb->asoc.last_used_address = laddr;
2776 * Now any running timers need to be adjusted since we really don't
2777 * care if they are running or not just blast in the new_inp into
2781 stcb->asoc.dack_timer.ep = (void *)new_inp;
2782 stcb->asoc.asconf_timer.ep = (void *)new_inp;
2783 stcb->asoc.strreset_timer.ep = (void *)new_inp;
2784 stcb->asoc.shut_guard_timer.ep = (void *)new_inp;
2785 stcb->asoc.autoclose_timer.ep = (void *)new_inp;
2786 stcb->asoc.delayed_event_timer.ep = (void *)new_inp;
2787 stcb->asoc.delete_prim_timer.ep = (void *)new_inp;
2788 /* now what about the nets? */
2789 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2790 net->pmtu_timer.ep = (void *)new_inp;
2791 net->hb_timer.ep = (void *)new_inp;
2792 net->rxt_timer.ep = (void *)new_inp;
2794 SCTP_INP_WUNLOCK(new_inp);
2795 SCTP_INP_WUNLOCK(old_inp);
2801 /* sctp_ifap is used to bypass normal local address validation checks */
2803 sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
2804 struct sctp_ifa *sctp_ifap, struct thread *p)
2806 /* bind a ep to a socket address */
2807 struct sctppcbhead *head;
2808 struct sctp_inpcb *inp, *inp_tmp;
2809 struct inpcb *ip_inp;
2810 int port_reuse_active = 0;
2818 inp = (struct sctp_inpcb *)so->so_pcb;
2819 ip_inp = (struct inpcb *)so->so_pcb;
2822 SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port: %d\n",
2823 ntohs(((struct sockaddr_in *)addr)->sin_port));
2824 SCTPDBG(SCTP_DEBUG_PCB1, "Addr: ");
2825 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
2828 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2829 /* already did a bind, subsequent binds NOT allowed ! */
2830 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2835 panic("null proc/thread");
2838 switch (addr->sa_family) {
2842 struct sockaddr_in *sin;
2844 /* IPV6_V6ONLY socket? */
2845 if (SCTP_IPV6_V6ONLY(ip_inp)) {
2846 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2849 if (addr->sa_len != sizeof(*sin)) {
2850 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2853 sin = (struct sockaddr_in *)addr;
2854 lport = sin->sin_port;
2856 * For LOOPBACK the prison_local_ip4() call
2857 * will transmute the ip address to the
2860 if (p && (error = prison_local_ip4(p->td_ucred, &sin->sin_addr)) != 0) {
2861 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2864 if (sin->sin_addr.s_addr != INADDR_ANY) {
2874 * Only for pure IPv6 Address. (No IPv4
2877 struct sockaddr_in6 *sin6;
2879 sin6 = (struct sockaddr_in6 *)addr;
2881 if (addr->sa_len != sizeof(*sin6)) {
2882 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2885 lport = sin6->sin6_port;
2887 * For LOOPBACK the prison_local_ip6() call
2888 * will transmute the ipv6 address to the
2891 if (p && (error = prison_local_ip6(p->td_ucred, &sin6->sin6_addr,
2892 (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
2893 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2896 if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2898 /* KAME hack: embed scopeid */
2899 if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
2900 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2904 /* this must be cleared for ifa_ifwithaddr() */
2905 sin6->sin6_scope_id = 0;
2910 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EAFNOSUPPORT);
2911 return (EAFNOSUPPORT);
2914 SCTP_INP_INFO_WLOCK();
2915 SCTP_INP_WLOCK(inp);
2916 /* Setup a vrf_id to be the default for the non-bind-all case. */
2917 vrf_id = inp->def_vrf_id;
2919 /* increase our count due to the unlock we do */
2920 SCTP_INP_INCR_REF(inp);
2923 * Did the caller specify a port? if so we must see if an ep
2924 * already has this one bound.
2926 /* got to be root to get at low ports */
2927 if (ntohs(lport) < IPPORT_RESERVED) {
2929 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2931 SCTP_INP_DECR_REF(inp);
2932 SCTP_INP_WUNLOCK(inp);
2933 SCTP_INP_INFO_WUNLOCK();
2937 SCTP_INP_WUNLOCK(inp);
2939 vrf_id = inp->def_vrf_id;
2940 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2941 if (inp_tmp != NULL) {
2943 * lock guy returned and lower count note
2944 * that we are not bound so inp_tmp should
2945 * NEVER be inp. And it is this inp
2946 * (inp_tmp) that gets the reference bump,
2947 * so we must lower it.
2949 SCTP_INP_DECR_REF(inp_tmp);
2951 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2952 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2954 * Ok, must be one-2-one and
2955 * allowing port re-use
2957 port_reuse_active = 1;
2958 goto continue_anyway;
2960 SCTP_INP_DECR_REF(inp);
2961 SCTP_INP_INFO_WUNLOCK();
2962 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2963 return (EADDRINUSE);
2966 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2967 if (inp_tmp != NULL) {
2969 * lock guy returned and lower count note
2970 * that we are not bound so inp_tmp should
2971 * NEVER be inp. And it is this inp
2972 * (inp_tmp) that gets the reference bump,
2973 * so we must lower it.
2975 SCTP_INP_DECR_REF(inp_tmp);
2977 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2978 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2980 * Ok, must be one-2-one and
2981 * allowing port re-use
2983 port_reuse_active = 1;
2984 goto continue_anyway;
2986 SCTP_INP_DECR_REF(inp);
2987 SCTP_INP_INFO_WUNLOCK();
2988 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2989 return (EADDRINUSE);
2993 SCTP_INP_WLOCK(inp);
2995 /* verify that no lport is not used by a singleton */
2996 if ((port_reuse_active == 0) &&
2997 (inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))) {
2998 /* Sorry someone already has this one bound */
2999 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
3000 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
3001 port_reuse_active = 1;
3003 SCTP_INP_DECR_REF(inp);
3004 SCTP_INP_WUNLOCK(inp);
3005 SCTP_INP_INFO_WUNLOCK();
3006 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3007 return (EADDRINUSE);
3012 uint16_t first, last, candidate;
3016 if (ip_inp->inp_flags & INP_HIGHPORT) {
3017 first = MODULE_GLOBAL(ipport_hifirstauto);
3018 last = MODULE_GLOBAL(ipport_hilastauto);
3019 } else if (ip_inp->inp_flags & INP_LOWPORT) {
3021 priv_check(p, PRIV_NETINET_RESERVEDPORT)
3023 SCTP_INP_DECR_REF(inp);
3024 SCTP_INP_WUNLOCK(inp);
3025 SCTP_INP_INFO_WUNLOCK();
3026 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
3029 first = MODULE_GLOBAL(ipport_lowfirstauto);
3030 last = MODULE_GLOBAL(ipport_lowlastauto);
3032 first = MODULE_GLOBAL(ipport_firstauto);
3033 last = MODULE_GLOBAL(ipport_lastauto);
3042 count = last - first + 1; /* number of candidates */
3043 candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count);
3047 if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) {
3052 SCTP_INP_DECR_REF(inp);
3053 SCTP_INP_WUNLOCK(inp);
3054 SCTP_INP_INFO_WUNLOCK();
3055 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3056 return (EADDRINUSE);
3058 if (candidate == last)
3061 candidate = candidate + 1;
3064 lport = htons(candidate);
3066 SCTP_INP_DECR_REF(inp);
3067 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE |
3068 SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
3070 * this really should not happen. The guy did a non-blocking
3071 * bind and then did a close at the same time.
3073 SCTP_INP_WUNLOCK(inp);
3074 SCTP_INP_INFO_WUNLOCK();
3075 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3078 /* ok we look clear to give out this port, so lets setup the binding */
3080 /* binding to all addresses, so just set in the proper flags */
3081 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL;
3082 /* set the automatic addr changes from kernel flag */
3083 if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) {
3084 sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3085 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3087 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3088 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3090 if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) {
3091 sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3093 sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3096 * set the automatic mobility_base from kernel flag (by
3099 if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) {
3100 sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE);
3101 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3103 sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE);
3104 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3107 * set the automatic mobility_fasthandoff from kernel flag
3110 if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) {
3111 sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF);
3112 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3114 sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF);
3115 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3119 * bind specific, make sure flags is off and add a new
3120 * address structure to the sctp_addr_list inside the ep
3123 * We will need to allocate one and insert it at the head. The
3124 * socketopt call can just insert new addresses in there as
3125 * well. It will also have to do the embed scope kame hack
3126 * too (before adding).
3128 struct sctp_ifa *ifa;
3129 struct sockaddr_storage store_sa;
3131 memset(&store_sa, 0, sizeof(store_sa));
3132 switch (addr->sa_family) {
3136 struct sockaddr_in *sin;
3138 sin = (struct sockaddr_in *)&store_sa;
3139 memcpy(sin, addr, sizeof(struct sockaddr_in));
3147 struct sockaddr_in6 *sin6;
3149 sin6 = (struct sockaddr_in6 *)&store_sa;
3150 memcpy(sin6, addr, sizeof(struct sockaddr_in6));
3151 sin6->sin6_port = 0;
3159 * first find the interface with the bound address need to
3160 * zero out the port to find the address! yuck! can't do
3161 * this earlier since need port for sctp_pcb_findep()
3163 if (sctp_ifap != NULL) {
3167 * Note for BSD we hit here always other O/S's will
3168 * pass things in via the sctp_ifap argument
3171 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&store_sa,
3172 vrf_id, SCTP_ADDR_NOT_LOCKED);
3175 /* Can't find an interface with that address */
3176 SCTP_INP_WUNLOCK(inp);
3177 SCTP_INP_INFO_WUNLOCK();
3178 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRNOTAVAIL);
3179 return (EADDRNOTAVAIL);
3182 if (addr->sa_family == AF_INET6) {
3183 /* GAK, more FIXME IFA lock? */
3184 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
3185 /* Can't bind a non-existent addr. */
3186 SCTP_INP_WUNLOCK(inp);
3187 SCTP_INP_INFO_WUNLOCK();
3188 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3193 /* we're not bound all */
3194 inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL;
3195 /* allow bindx() to send ASCONF's for binding changes */
3196 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3197 /* clear automatic addr changes from kernel flag */
3198 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3200 /* add this address to the endpoint list */
3201 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0);
3203 SCTP_INP_WUNLOCK(inp);
3204 SCTP_INP_INFO_WUNLOCK();
3209 /* find the bucket */
3210 if (port_reuse_active) {
3211 /* Put it into tcp 1-2-1 hash */
3212 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))];
3213 inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
3215 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))];
3217 /* put it in the bucket */
3218 LIST_INSERT_HEAD(head, inp, sctp_hash);
3219 SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n",
3220 (void *)head, ntohs(lport), port_reuse_active);
3221 /* set in the port */
3222 inp->sctp_lport = lport;
3224 /* turn off just the unbound flag */
3225 inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
3226 SCTP_INP_WUNLOCK(inp);
3227 SCTP_INP_INFO_WUNLOCK();
3233 sctp_iterator_inp_being_freed(struct sctp_inpcb *inp)
3235 struct sctp_iterator *it, *nit;
3238 * We enter with the only the ITERATOR_LOCK in place and a write
3239 * lock on the inp_info stuff.
3241 it = sctp_it_ctl.cur_it;
3242 if (it && (it->vn != curvnet)) {
3243 /* Its not looking at our VNET */
3246 if (it && (it->inp == inp)) {
3248 * This is tricky and we hold the iterator lock, but when it
3249 * returns and gets the lock (when we release it) the
3250 * iterator will try to operate on inp. We need to stop that
3251 * from happening. But of course the iterator has a
3252 * reference on the stcb and inp. We can mark it and it will
3255 * If its a single iterator situation, we set the end iterator
3256 * flag. Otherwise we set the iterator to go to the next
3260 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3261 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
3263 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_INP;
3267 * Now go through and remove any single reference to our inp that
3268 * may be still pending on the list
3270 SCTP_IPI_ITERATOR_WQ_LOCK();
3271 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
3272 if (it->vn != curvnet) {
3275 if (it->inp == inp) {
3276 /* This one points to me is it inp specific? */
3277 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3278 /* Remove and free this one */
3279 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
3281 if (it->function_atend != NULL) {
3282 (*it->function_atend) (it->pointer, it->val);
3284 SCTP_FREE(it, SCTP_M_ITER);
3286 it->inp = LIST_NEXT(it->inp, sctp_list);
3288 SCTP_INP_INCR_REF(it->inp);
3292 * When its put in the refcnt is incremented so decr
3295 SCTP_INP_DECR_REF(inp);
3298 SCTP_IPI_ITERATOR_WQ_UNLOCK();
3301 /* release sctp_inpcb unbind the port */
3303 sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
3306 * Here we free a endpoint. We must find it (if it is in the Hash
3307 * table) and remove it from there. Then we must also find it in the
3308 * overall list and remove it from there. After all removals are
3309 * complete then any timer has to be stopped. Then start the actual
3310 * freeing. a) Any local lists. b) Any associations. c) The hash of
3311 * all associations. d) finally the ep itself.
3313 struct sctp_tcb *asoc, *nasoc;
3314 struct sctp_laddr *laddr, *nladdr;
3315 struct inpcb *ip_pcb;
3317 int being_refed = 0;
3318 struct sctp_queued_to_read *sq, *nsq;
3320 sctp_sharedkey_t *shared_key, *nshared_key;
3323 #ifdef SCTP_LOG_CLOSING
3324 sctp_log_closing(inp, NULL, 0);
3326 SCTP_ITERATOR_LOCK();
3327 /* mark any iterators on the list or being processed */
3328 sctp_iterator_inp_being_freed(inp);
3329 SCTP_ITERATOR_UNLOCK();
3330 so = inp->sctp_socket;
3331 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
3332 /* been here before.. eeks.. get out of here */
3333 SCTP_PRINTF("This conflict in free SHOULD not be happening! from %d, imm %d\n", from, immediate);
3334 #ifdef SCTP_LOG_CLOSING
3335 sctp_log_closing(inp, NULL, 1);
3339 SCTP_ASOC_CREATE_LOCK(inp);
3340 SCTP_INP_INFO_WLOCK();
3342 SCTP_INP_WLOCK(inp);
3343 if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
3344 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP;
3345 /* socket is gone, so no more wakeups allowed */
3346 inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE;
3347 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
3348 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
3351 /* First time through we have the socket lock, after that no more. */
3352 sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL,
3353 SCTP_FROM_SCTP_PCB + SCTP_LOC_1);
3356 sctp_m_freem(inp->control);
3357 inp->control = NULL;
3360 sctp_m_freem(inp->pkt);
3363 ip_pcb = &inp->ip_inp.inp; /* we could just cast the main pointer
3364 * here but I will be nice :> (i.e.
3366 if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
3370 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3371 SCTP_TCB_LOCK(asoc);
3372 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3373 /* Skip guys being freed */
3375 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3377 * Special case - we did not start a
3378 * kill timer on the asoc due to it
3379 * was not closed. So go ahead and
3382 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3383 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3385 SCTP_TCB_UNLOCK(asoc);
3388 if (((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_WAIT) ||
3389 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_ECHOED)) &&
3390 (asoc->asoc.total_output_queue_size == 0)) {
3392 * If we have data in queue, we don't want
3393 * to just free since the app may have done,
3394 * send()/close or connect/send/close. And
3395 * it wants the data to get across first.
3397 /* Just abandon things in the front states */
3398 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE,
3399 SCTP_FROM_SCTP_PCB + SCTP_LOC_2) == 0) {
3404 /* Disconnect the socket please */
3405 asoc->sctp_socket = NULL;
3406 asoc->asoc.state |= SCTP_STATE_CLOSED_SOCKET;
3407 if ((asoc->asoc.size_on_reasm_queue > 0) ||
3408 (asoc->asoc.control_pdapi) ||
3409 (asoc->asoc.size_on_all_streams > 0) ||
3410 (so && (so->so_rcv.sb_cc > 0))) {
3411 /* Left with Data unread */
3412 struct mbuf *op_err;
3414 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3415 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_3;
3416 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3417 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3418 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3419 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3420 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3422 if (sctp_free_assoc(inp, asoc,
3423 SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_4) == 0) {
3427 } else if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3428 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3429 (asoc->asoc.stream_queue_cnt == 0)) {
3430 if (asoc->asoc.locked_on_sending) {
3433 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
3434 (SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
3435 struct sctp_nets *netp;
3438 * there is nothing queued to send,
3439 * so I send shutdown
3441 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3442 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3443 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3445 SCTP_SET_STATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_SENT);
3446 SCTP_CLEAR_SUBSTATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_PENDING);
3447 sctp_stop_timers_for_shutdown(asoc);
3448 if (asoc->asoc.alternate) {
3449 netp = asoc->asoc.alternate;
3451 netp = asoc->asoc.primary_destination;
3453 sctp_send_shutdown(asoc, netp);
3454 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, asoc->sctp_ep, asoc,
3456 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3457 asoc->asoc.primary_destination);
3458 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED);
3461 /* mark into shutdown pending */
3462 struct sctp_stream_queue_pending *sp;
3464 asoc->asoc.state |= SCTP_STATE_SHUTDOWN_PENDING;
3465 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3466 asoc->asoc.primary_destination);
3467 if (asoc->asoc.locked_on_sending) {
3468 sp = TAILQ_LAST(&((asoc->asoc.locked_on_sending)->outqueue),
3471 SCTP_PRINTF("Error, sp is NULL, locked on sending is %p strm:%d\n",
3472 (void *)asoc->asoc.locked_on_sending,
3473 asoc->asoc.locked_on_sending->stream_no);
3475 if ((sp->length == 0) && (sp->msg_is_complete == 0))
3476 asoc->asoc.state |= SCTP_STATE_PARTIAL_MSG_LEFT;
3479 if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3480 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3481 (asoc->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
3482 struct mbuf *op_err;
3485 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3486 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_5;
3487 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3488 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3489 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3490 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3491 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3493 if (sctp_free_assoc(inp, asoc,
3494 SCTP_PCBFREE_NOFORCE,
3495 SCTP_FROM_SCTP_PCB + SCTP_LOC_6) == 0) {
3500 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
3504 SCTP_TCB_UNLOCK(asoc);
3506 /* now is there some left in our SHUTDOWN state? */
3508 #ifdef SCTP_LOG_CLOSING
3509 sctp_log_closing(inp, NULL, 2);
3511 inp->sctp_socket = NULL;
3512 SCTP_INP_WUNLOCK(inp);
3513 SCTP_ASOC_CREATE_UNLOCK(inp);
3514 SCTP_INP_INFO_WUNLOCK();
3518 inp->sctp_socket = NULL;
3519 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) !=
3520 SCTP_PCB_FLAGS_UNBOUND) {
3522 * ok, this guy has been bound. It's port is somewhere in
3523 * the SCTP_BASE_INFO(hash table). Remove it!
3525 LIST_REMOVE(inp, sctp_hash);
3526 inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND;
3529 * If there is a timer running to kill us, forget it, since it may
3530 * have a contest on the INP lock.. which would cause us to die ...
3533 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3534 SCTP_TCB_LOCK(asoc);
3535 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3536 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3537 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3538 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3541 SCTP_TCB_UNLOCK(asoc);
3544 /* Free associations that are NOT killing us */
3545 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_COOKIE_WAIT) &&
3546 ((asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) {
3547 struct mbuf *op_err;
3549 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3550 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_7;
3551 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3552 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3553 } else if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3555 SCTP_TCB_UNLOCK(asoc);
3558 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3559 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3560 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3562 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_8) == 0) {
3567 /* Ok we have someone out there that will kill us */
3568 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3569 #ifdef SCTP_LOG_CLOSING
3570 sctp_log_closing(inp, NULL, 3);
3572 SCTP_INP_WUNLOCK(inp);
3573 SCTP_ASOC_CREATE_UNLOCK(inp);
3574 SCTP_INP_INFO_WUNLOCK();
3577 if (SCTP_INP_LOCK_CONTENDED(inp))
3579 if (SCTP_INP_READ_CONTENDED(inp))
3581 if (SCTP_ASOC_CREATE_LOCK_CONTENDED(inp))
3584 if ((inp->refcount) ||
3586 (inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) {
3587 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3588 #ifdef SCTP_LOG_CLOSING
3589 sctp_log_closing(inp, NULL, 4);
3591 sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
3592 SCTP_INP_WUNLOCK(inp);
3593 SCTP_ASOC_CREATE_UNLOCK(inp);
3594 SCTP_INP_INFO_WUNLOCK();
3597 inp->sctp_ep.signature_change.type = 0;
3598 inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE;
3600 * Remove it from the list .. last thing we need a lock for.
3602 LIST_REMOVE(inp, sctp_list);
3603 SCTP_INP_WUNLOCK(inp);
3604 SCTP_ASOC_CREATE_UNLOCK(inp);
3605 SCTP_INP_INFO_WUNLOCK();
3607 * Now we release all locks. Since this INP cannot be found anymore
3608 * except possibly by the kill timer that might be running. We call
3609 * the drain function here. It should hit the case were it sees the
3610 * ACTIVE flag cleared and exit out freeing us to proceed and
3611 * destroy everything.
3613 if (from != SCTP_CALLED_FROM_INPKILL_TIMER) {
3614 (void)SCTP_OS_TIMER_STOP_DRAIN(&inp->sctp_ep.signature_change.timer);
3616 /* Probably un-needed */
3617 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3620 #ifdef SCTP_LOG_CLOSING
3621 sctp_log_closing(inp, NULL, 5);
3625 if ((inp->sctp_asocidhash) != NULL) {
3626 SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark);
3627 inp->sctp_asocidhash = NULL;
3629 /* sa_ignore FREED_MEMORY */
3630 TAILQ_FOREACH_SAFE(sq, &inp->read_queue, next, nsq) {
3631 /* Its only abandoned if it had data left */
3633 SCTP_STAT_INCR(sctps_left_abandon);
3635 TAILQ_REMOVE(&inp->read_queue, sq, next);
3636 sctp_free_remote_addr(sq->whoFrom);
3638 so->so_rcv.sb_cc -= sq->length;
3640 sctp_m_freem(sq->data);
3644 * no need to free the net count, since at this point all
3647 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
3648 SCTP_DECR_READQ_COUNT();
3650 /* Now the sctp_pcb things */
3652 * free each asoc if it is not already closed/free. we can't use the
3653 * macro here since le_next will get freed as part of the
3654 * sctp_free_assoc() call.
3658 ipsec_delete_pcbpolicy(ip_pcb);
3661 /* Unlocks not needed since the socket is gone now */
3663 if (ip_pcb->inp_options) {
3664 (void)sctp_m_free(ip_pcb->inp_options);
3665 ip_pcb->inp_options = 0;
3668 if (ip_pcb->inp_vflag & INP_IPV6) {
3669 struct in6pcb *in6p;
3671 in6p = (struct in6pcb *)inp;
3672 ip6_freepcbopts(in6p->in6p_outputopts);
3675 ip_pcb->inp_vflag = 0;
3676 /* free up authentication fields */
3677 if (inp->sctp_ep.local_auth_chunks != NULL)
3678 sctp_free_chunklist(inp->sctp_ep.local_auth_chunks);
3679 if (inp->sctp_ep.local_hmacs != NULL)
3680 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3682 LIST_FOREACH_SAFE(shared_key, &inp->sctp_ep.shared_keys, next, nshared_key) {
3683 LIST_REMOVE(shared_key, next);
3684 sctp_free_sharedkey(shared_key);
3685 /* sa_ignore FREED_MEMORY */
3689 * if we have an address list the following will free the list of
3690 * ifaddr's that are set into this ep. Again macro limitations here,
3691 * since the LIST_FOREACH could be a bad idea.
3693 LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
3694 sctp_remove_laddr(laddr);
3697 #ifdef SCTP_TRACK_FREED_ASOCS
3699 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_free_list, sctp_tcblist, nasoc) {
3700 LIST_REMOVE(asoc, sctp_tcblist);
3701 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), asoc);
3702 SCTP_DECR_ASOC_COUNT();
3704 /* *** END TEMP CODE *** */
3706 /* Now lets see about freeing the EP hash table. */
3707 if (inp->sctp_tcbhash != NULL) {
3708 SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
3709 inp->sctp_tcbhash = NULL;
3711 /* Now we must put the ep memory back into the zone pool */
3712 crfree(inp->ip_inp.inp.inp_cred);
3713 INP_LOCK_DESTROY(&inp->ip_inp.inp);
3714 SCTP_INP_LOCK_DESTROY(inp);
3715 SCTP_INP_READ_DESTROY(inp);
3716 SCTP_ASOC_CREATE_LOCK_DESTROY(inp);
3717 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
3718 SCTP_DECR_EP_COUNT();
3723 sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
3725 struct sctp_nets *net;
3727 /* locate the address */
3728 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3729 if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr))
3737 sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
3739 struct sctp_ifa *sctp_ifa;
3741 sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED);
3750 * add's a remote endpoint address, done with the INIT/INIT-ACK as well as
3751 * when a ASCONF arrives that adds it. It will also initialize all the cwnd
3755 sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
3756 struct sctp_nets **netp, int set_scope, int from)
3759 * The following is redundant to the same lines in the
3760 * sctp_aloc_assoc() but is needed since others call the add address
3763 struct sctp_nets *net, *netfirst;
3766 SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ",
3768 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr);
3770 netfirst = sctp_findnet(stcb, newaddr);
3773 * Lie and return ok, we don't want to make the association
3774 * go away for this behavior. It will happen in the TCP
3775 * model in a connected socket. It does not reach the hash
3776 * table until after the association is built so it can't be
3777 * found. Mark as reachable, since the initial creation will
3778 * have been cleared and the NOT_IN_ASSOC flag will have
3779 * been added... and we don't want to end up removing it
3782 if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) {
3783 netfirst->dest_state = (SCTP_ADDR_REACHABLE |
3784 SCTP_ADDR_UNCONFIRMED);
3786 netfirst->dest_state = SCTP_ADDR_REACHABLE;
3792 switch (newaddr->sa_family) {
3796 struct sockaddr_in *sin;
3798 sin = (struct sockaddr_in *)newaddr;
3799 if (sin->sin_addr.s_addr == 0) {
3800 /* Invalid address */
3803 /* zero out the bzero area */
3804 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
3806 /* assure len is set */
3807 sin->sin_len = sizeof(struct sockaddr_in);
3809 #ifdef SCTP_DONT_DO_PRIVADDR_SCOPE
3810 stcb->asoc.scope.ipv4_local_scope = 1;
3812 if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
3813 stcb->asoc.scope.ipv4_local_scope = 1;
3815 #endif /* SCTP_DONT_DO_PRIVADDR_SCOPE */
3817 /* Validate the address is in scope */
3818 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) &&
3819 (stcb->asoc.scope.ipv4_local_scope == 0)) {
3829 struct sockaddr_in6 *sin6;
3831 sin6 = (struct sockaddr_in6 *)newaddr;
3832 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3833 /* Invalid address */
3836 /* assure len is set */
3837 sin6->sin6_len = sizeof(struct sockaddr_in6);
3839 if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) {
3840 stcb->asoc.scope.loopback_scope = 1;
3841 stcb->asoc.scope.local_scope = 0;
3842 stcb->asoc.scope.ipv4_local_scope = 1;
3843 stcb->asoc.scope.site_scope = 1;
3844 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
3846 * If the new destination is a
3847 * LINK_LOCAL we must have common
3848 * site scope. Don't set the local
3849 * scope since we may not share all
3850 * links, only loopback can do this.
3851 * Links on the local network would
3852 * also be on our private network
3855 stcb->asoc.scope.ipv4_local_scope = 1;
3856 stcb->asoc.scope.site_scope = 1;
3857 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
3859 * If the new destination is
3860 * SITE_LOCAL then we must have site
3863 stcb->asoc.scope.site_scope = 1;
3866 /* Validate the address is in scope */
3867 if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) &&
3868 (stcb->asoc.scope.loopback_scope == 0)) {
3870 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
3871 (stcb->asoc.scope.local_scope == 0)) {
3873 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
3874 (stcb->asoc.scope.site_scope == 0)) {
3882 /* not supported family type */
3885 net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets);
3889 SCTP_INCR_RADDR_COUNT();
3890 bzero(net, sizeof(struct sctp_nets));
3891 (void)SCTP_GETTIME_TIMEVAL(&net->start_time);
3892 memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len);
3893 switch (newaddr->sa_family) {
3896 ((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport;
3901 ((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport;
3907 net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id);
3908 if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) {
3909 stcb->asoc.scope.loopback_scope = 1;
3910 stcb->asoc.scope.ipv4_local_scope = 1;
3911 stcb->asoc.scope.local_scope = 0;
3912 stcb->asoc.scope.site_scope = 1;
3915 net->failure_threshold = stcb->asoc.def_net_failure;
3916 net->pf_threshold = stcb->asoc.def_net_pf_threshold;
3917 if (addr_inscope == 0) {
3918 net->dest_state = (SCTP_ADDR_REACHABLE |
3919 SCTP_ADDR_OUT_OF_SCOPE);
3921 if (from == SCTP_ADDR_IS_CONFIRMED)
3922 /* SCTP_ADDR_IS_CONFIRMED is passed by connect_x */
3923 net->dest_state = SCTP_ADDR_REACHABLE;
3925 net->dest_state = SCTP_ADDR_REACHABLE |
3926 SCTP_ADDR_UNCONFIRMED;
3929 * We set this to 0, the timer code knows that this means its an
3932 net->rto_needed = 1;
3934 net->RTO_measured = 0;
3935 stcb->asoc.numnets++;
3937 net->cwr_window_tsn = net->last_cwr_tsn = stcb->asoc.sending_seq - 1;
3938 net->port = stcb->asoc.port;
3939 net->dscp = stcb->asoc.default_dscp;
3941 net->flowlabel = stcb->asoc.default_flowlabel;
3943 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
3944 net->dest_state |= SCTP_ADDR_NOHB;
3946 net->dest_state &= ~SCTP_ADDR_NOHB;
3948 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DO_NOT_PMTUD)) {
3949 net->dest_state |= SCTP_ADDR_NO_PMTUD;
3951 net->dest_state &= ~SCTP_ADDR_NO_PMTUD;
3953 net->heart_beat_delay = stcb->asoc.heart_beat_delay;
3954 /* Init the timer structure */
3955 SCTP_OS_TIMER_INIT(&net->rxt_timer.timer);
3956 SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer);
3957 SCTP_OS_TIMER_INIT(&net->hb_timer.timer);
3959 /* Now generate a route for this guy */
3961 /* KAME hack: embed scopeid */
3962 if (newaddr->sa_family == AF_INET6) {
3963 struct sockaddr_in6 *sin6;
3965 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3966 (void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone));
3967 sin6->sin6_scope_id = 0;
3970 SCTP_RTALLOC((sctp_route_t *) & net->ro, stcb->asoc.vrf_id);
3972 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) {
3973 /* Get source address */
3974 net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep,
3976 (sctp_route_t *) & net->ro,
3980 if (net->ro._s_addr != NULL) {
3981 net->src_addr_selected = 1;
3982 /* Now get the interface MTU */
3983 if (net->ro._s_addr->ifn_p != NULL) {
3984 net->mtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p);
3987 net->src_addr_selected = 0;
3992 rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_rt);
3995 * Start things off to match mtu of
3998 SCTP_SET_MTU_OF_ROUTE(&net->ro._l_addr.sa,
3999 net->ro.ro_rt, net->mtu);
4002 * we take the route mtu over the interface,
4003 * since the route may be leading out the
4004 * loopback, or a different interface.
4010 net->src_addr_selected = 0;
4012 if (net->mtu == 0) {
4013 switch (newaddr->sa_family) {
4016 net->mtu = SCTP_DEFAULT_MTU;
4028 #if defined(INET) || defined(INET6)
4030 net->mtu -= (uint32_t) sizeof(struct udphdr);
4033 if (from == SCTP_ALLOC_ASOC) {
4034 stcb->asoc.smallest_mtu = net->mtu;
4036 if (stcb->asoc.smallest_mtu > net->mtu) {
4037 stcb->asoc.smallest_mtu = net->mtu;
4040 if (newaddr->sa_family == AF_INET6) {
4041 struct sockaddr_in6 *sin6;
4043 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
4044 (void)sa6_recoverscope(sin6);
4048 /* JRS - Use the congestion control given in the CC module */
4049 if (stcb->asoc.cc_functions.sctp_set_initial_cc_param != NULL)
4050 (*stcb->asoc.cc_functions.sctp_set_initial_cc_param) (stcb, net);
4053 * CMT: CUC algo - set find_pseudo_cumack to TRUE (1) at beginning
4054 * of assoc (2005/06/27, iyengar@cis.udel.edu)
4056 net->find_pseudo_cumack = 1;
4057 net->find_rtx_pseudo_cumack = 1;
4058 /* Choose an initial flowid. */
4059 net->flowid = stcb->asoc.my_vtag ^
4060 ntohs(stcb->rport) ^
4061 ntohs(stcb->sctp_ep->sctp_lport);
4068 netfirst = TAILQ_FIRST(&stcb->asoc.nets);
4069 if (net->ro.ro_rt == NULL) {
4070 /* Since we have no route put it at the back */
4071 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4072 } else if (netfirst == NULL) {
4073 /* We are the first one in the pool. */
4074 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4075 } else if (netfirst->ro.ro_rt == NULL) {
4077 * First one has NO route. Place this one ahead of the first
4080 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4081 } else if (net->ro.ro_rt->rt_ifp != netfirst->ro.ro_rt->rt_ifp) {
4083 * This one has a different interface than the one at the
4084 * top of the list. Place it ahead.
4086 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4089 * Ok we have the same interface as the first one. Move
4090 * forward until we find either a) one with a NULL route...
4091 * insert ahead of that b) one with a different ifp.. insert
4092 * after that. c) end of the list.. insert at the tail.
4094 struct sctp_nets *netlook;
4097 netlook = TAILQ_NEXT(netfirst, sctp_next);
4098 if (netlook == NULL) {
4099 /* End of the list */
4100 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4102 } else if (netlook->ro.ro_rt == NULL) {
4103 /* next one has NO route */
4104 TAILQ_INSERT_BEFORE(netfirst, net, sctp_next);
4106 } else if (netlook->ro.ro_rt->rt_ifp != net->ro.ro_rt->rt_ifp) {
4107 TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook,
4113 } while (netlook != NULL);
4116 /* got to have a primary set */
4117 if (stcb->asoc.primary_destination == 0) {
4118 stcb->asoc.primary_destination = net;
4119 } else if ((stcb->asoc.primary_destination->ro.ro_rt == NULL) &&
4121 ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
4122 /* No route to current primary adopt new primary */
4123 stcb->asoc.primary_destination = net;
4125 /* Validate primary is first */
4126 net = TAILQ_FIRST(&stcb->asoc.nets);
4127 if ((net != stcb->asoc.primary_destination) &&
4128 (stcb->asoc.primary_destination)) {
4130 * first one on the list is NOT the primary sctp_cmpaddr()
4131 * is much more efficient if the primary is the first on the
4134 TAILQ_REMOVE(&stcb->asoc.nets,
4135 stcb->asoc.primary_destination, sctp_next);
4136 TAILQ_INSERT_HEAD(&stcb->asoc.nets,
4137 stcb->asoc.primary_destination, sctp_next);
4144 sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
4147 struct sctpasochead *head;
4148 struct sctp_tcb *lstcb;
4150 SCTP_INP_WLOCK(inp);
4152 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
4154 SCTP_INP_WUNLOCK(inp);
4158 * We don't allow assoc id to be one of SCTP_FUTURE_ASSOC,
4159 * SCTP_CURRENT_ASSOC and SCTP_ALL_ASSOC.
4161 if (inp->sctp_associd_counter <= SCTP_ALL_ASSOC) {
4162 inp->sctp_associd_counter = SCTP_ALL_ASSOC + 1;
4164 id = inp->sctp_associd_counter;
4165 inp->sctp_associd_counter++;
4166 lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t) id, 0);
4170 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
4171 LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash);
4172 stcb->asoc.in_asocid_hash = 1;
4173 SCTP_INP_WUNLOCK(inp);
4178 * allocate an association and add it to the endpoint. The caller must be
4179 * careful to add all additional addresses once they are know right away or
4180 * else the assoc will be may experience a blackout scenario.
4183 sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
4184 int *error, uint32_t override_tag, uint32_t vrf_id,
4188 /* note the p argument is only valid in unbound sockets */
4190 struct sctp_tcb *stcb;
4191 struct sctp_association *asoc;
4192 struct sctpasochead *head;
4197 * Assumption made here: Caller has done a
4198 * sctp_findassociation_ep_addr(ep, addr's); to make sure the
4199 * address does not exist already.
4201 if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) {
4202 /* Hit max assoc, sorry no more */
4203 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4207 if (firstaddr == NULL) {
4208 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4212 SCTP_INP_RLOCK(inp);
4213 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
4214 ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) ||
4215 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4217 * If its in the TCP pool, its NOT allowed to create an
4218 * association. The parent listener needs to call
4219 * sctp_aloc_assoc.. or the one-2-many socket. If a peeled
4220 * off, or connected one does this.. its an error.
4222 SCTP_INP_RUNLOCK(inp);
4223 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4227 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
4228 (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)) {
4229 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) ||
4230 (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED)) {
4231 SCTP_INP_RUNLOCK(inp);
4232 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4237 SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:");
4240 SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr);
4241 switch (firstaddr->sa_family) {
4244 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4245 ntohs(((struct sockaddr_in *)firstaddr)->sin_port));
4250 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4251 ntohs(((struct sockaddr_in6 *)firstaddr)->sin6_port));
4258 SCTPDBG(SCTP_DEBUG_PCB3, "None\n");
4260 #endif /* SCTP_DEBUG */
4261 switch (firstaddr->sa_family) {
4265 struct sockaddr_in *sin;
4267 sin = (struct sockaddr_in *)firstaddr;
4268 if ((ntohs(sin->sin_port) == 0) ||
4269 (sin->sin_addr.s_addr == INADDR_ANY) ||
4270 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
4271 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
4272 /* Invalid address */
4273 SCTP_INP_RUNLOCK(inp);
4274 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4278 rport = sin->sin_port;
4285 struct sockaddr_in6 *sin6;
4287 sin6 = (struct sockaddr_in6 *)firstaddr;
4288 if ((ntohs(sin6->sin6_port) == 0) ||
4289 IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
4290 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
4291 /* Invalid address */
4292 SCTP_INP_RUNLOCK(inp);
4293 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4297 rport = sin6->sin6_port;
4302 /* not supported family type */
4303 SCTP_INP_RUNLOCK(inp);
4304 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4308 SCTP_INP_RUNLOCK(inp);
4309 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4311 * If you have not performed a bind, then we need to do the
4312 * ephemeral bind for you.
4314 if ((err = sctp_inpcb_bind(inp->sctp_socket,
4315 (struct sockaddr *)NULL,
4316 (struct sctp_ifa *)NULL,
4319 /* bind error, probably perm */
4324 stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb);
4326 /* out of memory? */
4327 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
4331 SCTP_INCR_ASOC_COUNT();
4333 bzero(stcb, sizeof(*stcb));
4336 asoc->assoc_id = sctp_aloc_a_assoc_id(inp, stcb);
4337 SCTP_TCB_LOCK_INIT(stcb);
4338 SCTP_TCB_SEND_LOCK_INIT(stcb);
4339 stcb->rport = rport;
4340 /* setup back pointer's */
4341 stcb->sctp_ep = inp;
4342 stcb->sctp_socket = inp->sctp_socket;
4343 if ((err = sctp_init_asoc(inp, stcb, override_tag, vrf_id))) {
4345 SCTP_TCB_LOCK_DESTROY(stcb);
4346 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4347 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4348 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4349 SCTP_DECR_ASOC_COUNT();
4354 SCTP_INP_INFO_WLOCK();
4355 SCTP_INP_WLOCK(inp);
4356 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
4357 /* inpcb freed while alloc going on */
4358 SCTP_TCB_LOCK_DESTROY(stcb);
4359 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4360 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4361 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4362 SCTP_INP_WUNLOCK(inp);
4363 SCTP_INP_INFO_WUNLOCK();
4364 SCTP_DECR_ASOC_COUNT();
4365 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4369 SCTP_TCB_LOCK(stcb);
4371 /* now that my_vtag is set, add it to the hash */
4372 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))];
4373 /* put it in the bucket in the vtag hash of assoc's for the system */
4374 LIST_INSERT_HEAD(head, stcb, sctp_asocs);
4375 SCTP_INP_INFO_WUNLOCK();
4377 if ((err = sctp_add_remote_addr(stcb, firstaddr, NULL, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC))) {
4378 /* failure.. memory error? */
4379 if (asoc->strmout) {
4380 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4381 asoc->strmout = NULL;
4383 if (asoc->mapping_array) {
4384 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4385 asoc->mapping_array = NULL;
4387 if (asoc->nr_mapping_array) {
4388 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4389 asoc->nr_mapping_array = NULL;
4391 SCTP_DECR_ASOC_COUNT();
4392 SCTP_TCB_UNLOCK(stcb);
4393 SCTP_TCB_LOCK_DESTROY(stcb);
4394 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4395 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4396 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4397 SCTP_INP_WUNLOCK(inp);
4398 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4402 /* Init all the timers */
4403 SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer);
4404 SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer);
4405 SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer);
4406 SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer);
4407 SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer);
4408 SCTP_OS_TIMER_INIT(&asoc->delayed_event_timer.timer);
4409 SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer);
4411 LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist);
4412 /* now file the port under the hash as well */
4413 if (inp->sctp_tcbhash != NULL) {
4414 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport,
4415 inp->sctp_hashmark)];
4416 LIST_INSERT_HEAD(head, stcb, sctp_tcbhash);
4418 SCTP_INP_WUNLOCK(inp);
4419 SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", (void *)stcb);
4425 sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
4427 struct sctp_association *asoc;
4431 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4432 if (net == asoc->primary_destination) {
4434 struct sctp_nets *lnet;
4436 lnet = TAILQ_FIRST(&asoc->nets);
4438 * Mobility adaptation Ideally, if deleted destination is
4439 * the primary, it becomes a fast retransmission trigger by
4440 * the subsequent SET PRIMARY. (by micchie)
4442 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
4443 SCTP_MOBILITY_BASE) ||
4444 sctp_is_mobility_feature_on(stcb->sctp_ep,
4445 SCTP_MOBILITY_FASTHANDOFF)) {
4446 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n");
4447 if (asoc->deleted_primary != NULL) {
4448 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n");
4451 asoc->deleted_primary = net;
4452 atomic_add_int(&net->ref_count, 1);
4453 memset(&net->lastsa, 0, sizeof(net->lastsa));
4454 memset(&net->lastsv, 0, sizeof(net->lastsv));
4455 sctp_mobility_feature_on(stcb->sctp_ep,
4456 SCTP_MOBILITY_PRIM_DELETED);
4457 sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED,
4458 stcb->sctp_ep, stcb, NULL);
4461 /* Try to find a confirmed primary */
4462 asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0);
4464 if (net == asoc->last_data_chunk_from) {
4466 asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets);
4468 if (net == asoc->last_control_chunk_from) {
4470 asoc->last_control_chunk_from = NULL;
4472 if (net == stcb->asoc.alternate) {
4473 sctp_free_remote_addr(stcb->asoc.alternate);
4474 stcb->asoc.alternate = NULL;
4476 sctp_free_remote_addr(net);
4480 * remove a remote endpoint address from an association, it will fail if the
4481 * address does not exist.
4484 sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
4487 * Here we need to remove a remote address. This is quite simple, we
4488 * first find it in the list of address for the association
4489 * (tasoc->asoc.nets) and then if it is there, we do a LIST_REMOVE
4490 * on that item. Note we do not allow it to be removed if there are
4491 * no other addresses.
4493 struct sctp_association *asoc;
4494 struct sctp_nets *net, *nnet;
4498 /* locate the address */
4499 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
4500 if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) {
4503 if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr,
4505 /* we found the guy */
4506 if (asoc->numnets < 2) {
4507 /* Must have at LEAST two remote addresses */
4510 sctp_remove_net(stcb, net);
4520 sctp_delete_from_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4522 struct sctpvtaghead *chain;
4523 struct sctp_tagblock *twait_block;
4527 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4528 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4529 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4530 if ((twait_block->vtag_block[i].v_tag == tag) &&
4531 (twait_block->vtag_block[i].lport == lport) &&
4532 (twait_block->vtag_block[i].rport == rport)) {
4533 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4534 twait_block->vtag_block[i].v_tag = 0;
4535 twait_block->vtag_block[i].lport = 0;
4536 twait_block->vtag_block[i].rport = 0;
4547 sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4549 struct sctpvtaghead *chain;
4550 struct sctp_tagblock *twait_block;
4554 SCTP_INP_INFO_WLOCK();
4555 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4556 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4557 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4558 if ((twait_block->vtag_block[i].v_tag == tag) &&
4559 (twait_block->vtag_block[i].lport == lport) &&
4560 (twait_block->vtag_block[i].rport == rport)) {
4568 SCTP_INP_INFO_WUNLOCK();
4574 sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport)
4576 struct sctpvtaghead *chain;
4577 struct sctp_tagblock *twait_block;
4585 (void)SCTP_GETTIME_TIMEVAL(&now);
4586 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4588 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4589 /* Block(s) present, lets find space, and expire on the fly */
4590 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4591 if ((twait_block->vtag_block[i].v_tag == 0) &&
4593 twait_block->vtag_block[i].tv_sec_at_expire =
4595 twait_block->vtag_block[i].v_tag = tag;
4596 twait_block->vtag_block[i].lport = lport;
4597 twait_block->vtag_block[i].rport = rport;
4599 } else if ((twait_block->vtag_block[i].v_tag) &&
4600 ((long)twait_block->vtag_block[i].tv_sec_at_expire < now.tv_sec)) {
4601 /* Audit expires this guy */
4602 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4603 twait_block->vtag_block[i].v_tag = 0;
4604 twait_block->vtag_block[i].lport = 0;
4605 twait_block->vtag_block[i].rport = 0;
4607 /* Reuse it for my new tag */
4608 twait_block->vtag_block[i].tv_sec_at_expire = now.tv_sec + time;
4609 twait_block->vtag_block[i].v_tag = tag;
4610 twait_block->vtag_block[i].lport = lport;
4611 twait_block->vtag_block[i].rport = rport;
4618 * We only do up to the block where we can place our
4624 /* Need to add a new block to chain */
4626 SCTP_MALLOC(twait_block, struct sctp_tagblock *,
4627 sizeof(struct sctp_tagblock), SCTP_M_TIMW);
4628 if (twait_block == NULL) {
4630 panic("Can not alloc tagblock");
4634 memset(twait_block, 0, sizeof(struct sctp_tagblock));
4635 LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock);
4636 twait_block->vtag_block[0].tv_sec_at_expire = now.tv_sec + time;
4637 twait_block->vtag_block[0].v_tag = tag;
4638 twait_block->vtag_block[0].lport = lport;
4639 twait_block->vtag_block[0].rport = rport;
4646 * Free the association after un-hashing the remote port. This
4647 * function ALWAYS returns holding NO LOCK on the stcb. It DOES
4648 * expect that the input to this function IS a locked TCB.
4649 * It will return 0, if it did NOT destroy the association (instead
4650 * it unlocks it. It will return NON-zero if it either destroyed the
4651 * association OR the association is already destroyed.
4654 sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
4657 struct sctp_association *asoc;
4658 struct sctp_nets *net, *nnet;
4659 struct sctp_laddr *laddr, *naddr;
4660 struct sctp_tmit_chunk *chk, *nchk;
4661 struct sctp_asconf_addr *aparam, *naparam;
4662 struct sctp_asconf_ack *aack, *naack;
4663 struct sctp_stream_reset_list *strrst, *nstrrst;
4664 struct sctp_queued_to_read *sq, *nsq;
4665 struct sctp_stream_queue_pending *sp, *nsp;
4666 sctp_sharedkey_t *shared_key, *nshared_key;
4669 /* first, lets purge the entry from the hash table. */
4671 #ifdef SCTP_LOG_CLOSING
4672 sctp_log_closing(inp, stcb, 6);
4674 if (stcb->asoc.state == 0) {
4675 #ifdef SCTP_LOG_CLOSING
4676 sctp_log_closing(inp, NULL, 7);
4678 /* there is no asoc, really TSNH :-0 */
4681 if (stcb->asoc.alternate) {
4682 sctp_free_remote_addr(stcb->asoc.alternate);
4683 stcb->asoc.alternate = NULL;
4686 if (stcb->freed_from_where == 0) {
4687 /* Only record the first place free happened from */
4688 stcb->freed_from_where = from_location;
4693 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4694 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4695 /* nothing around */
4698 so = inp->sctp_socket;
4701 * We used timer based freeing if a reader or writer is in the way.
4702 * So we first check if we are actually being called from a timer,
4703 * if so we abort early if a reader or writer is still in the way.
4705 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
4706 (from_inpcbfree == SCTP_NORMAL_PROC)) {
4708 * is it the timer driving us? if so are the reader/writers
4711 if (stcb->asoc.refcnt) {
4712 /* nope, reader or writer in the way */
4713 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4714 /* no asoc destroyed */
4715 SCTP_TCB_UNLOCK(stcb);
4716 #ifdef SCTP_LOG_CLOSING
4717 sctp_log_closing(inp, stcb, 8);
4722 /* now clean up any other timers */
4723 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4724 asoc->dack_timer.self = NULL;
4725 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4727 * For stream reset we don't blast this unless
4728 * it is a str-reset timer, it might be the
4729 * free-asoc timer which we DON'T want to
4732 if (asoc->strreset_timer.type == SCTP_TIMER_TYPE_STRRESET)
4733 asoc->strreset_timer.self = NULL;
4734 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4735 asoc->asconf_timer.self = NULL;
4736 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4737 asoc->autoclose_timer.self = NULL;
4738 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4739 asoc->shut_guard_timer.self = NULL;
4740 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4741 asoc->delayed_event_timer.self = NULL;
4742 /* Mobility adaptation */
4743 (void)SCTP_OS_TIMER_STOP(&asoc->delete_prim_timer.timer);
4744 asoc->delete_prim_timer.self = NULL;
4745 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4746 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4747 net->rxt_timer.self = NULL;
4748 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4749 net->pmtu_timer.self = NULL;
4750 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4751 net->hb_timer.self = NULL;
4753 /* Now the read queue needs to be cleaned up (only once) */
4754 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) {
4755 stcb->asoc.state |= SCTP_STATE_ABOUT_TO_BE_FREED;
4756 SCTP_INP_READ_LOCK(inp);
4757 TAILQ_FOREACH(sq, &inp->read_queue, next) {
4758 if (sq->stcb == stcb) {
4759 sq->do_not_ref_stcb = 1;
4760 sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
4762 * If there is no end, there never will be
4765 if (sq->end_added == 0) {
4766 /* Held for PD-API clear that. */
4767 sq->pdapi_aborted = 1;
4768 sq->held_length = 0;
4769 if (sctp_stcb_is_feature_on(inp, stcb, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) {
4771 * Need to add a PD-API
4772 * aborted indication.
4773 * Setting the control_pdapi
4774 * assures that it will be
4775 * added right after this
4780 stcb->asoc.control_pdapi = sq;
4781 strseq = (sq->sinfo_stream << 16) | sq->sinfo_ssn;
4782 sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION,
4784 SCTP_PARTIAL_DELIVERY_ABORTED,
4787 stcb->asoc.control_pdapi = NULL;
4790 /* Add an end to wake them */
4794 SCTP_INP_READ_UNLOCK(inp);
4795 if (stcb->block_entry) {
4796 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET);
4797 stcb->block_entry->error = ECONNRESET;
4798 stcb->block_entry = NULL;
4801 if ((stcb->asoc.refcnt) || (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE)) {
4803 * Someone holds a reference OR the socket is unaccepted
4806 if ((stcb->asoc.refcnt) ||
4807 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4808 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4809 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4810 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4812 SCTP_TCB_UNLOCK(stcb);
4813 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4814 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4815 /* nothing around */
4818 /* Wake any reader/writers */
4819 sctp_sorwakeup(inp, so);
4820 sctp_sowwakeup(inp, so);
4822 #ifdef SCTP_LOG_CLOSING
4823 sctp_log_closing(inp, stcb, 9);
4825 /* no asoc destroyed */
4828 #ifdef SCTP_LOG_CLOSING
4829 sctp_log_closing(inp, stcb, 10);
4832 * When I reach here, no others want to kill the assoc yet.. and I
4833 * own the lock. Now its possible an abort comes in when I do the
4834 * lock exchange below to grab all the locks to do the final take
4835 * out. to prevent this we increment the count, which will start a
4836 * timer and blow out above thus assuring us that we hold exclusive
4837 * killing of the asoc. Note that after getting back the TCB lock we
4838 * will go ahead and increment the counter back up and stop any
4839 * timer a passing stranger may have started :-S
4841 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4842 atomic_add_int(&stcb->asoc.refcnt, 1);
4844 SCTP_TCB_UNLOCK(stcb);
4845 SCTP_INP_INFO_WLOCK();
4846 SCTP_INP_WLOCK(inp);
4847 SCTP_TCB_LOCK(stcb);
4849 /* Double check the GONE flag */
4850 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4851 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4852 /* nothing around */
4855 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
4856 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4858 * For TCP type we need special handling when we are
4859 * connected. We also include the peel'ed off ones to.
4861 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4862 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED;
4863 inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED;
4866 if (so->so_rcv.sb_cc == 0) {
4867 so->so_state &= ~(SS_ISCONNECTING |
4868 SS_ISDISCONNECTING |
4872 socantrcvmore_locked(so);
4873 sctp_sowwakeup(inp, so);
4874 sctp_sorwakeup(inp, so);
4880 * Make it invalid too, that way if its about to run it will abort
4883 /* re-increment the lock */
4884 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4885 atomic_add_int(&stcb->asoc.refcnt, -1);
4887 if (stcb->asoc.refcnt) {
4888 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4889 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4890 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4891 SCTP_INP_INFO_WUNLOCK();
4892 SCTP_INP_WUNLOCK(inp);
4894 SCTP_TCB_UNLOCK(stcb);
4898 if (inp->sctp_tcbhash) {
4899 LIST_REMOVE(stcb, sctp_tcbhash);
4901 if (stcb->asoc.in_asocid_hash) {
4902 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4904 /* Now lets remove it from the list of ALL associations in the EP */
4905 LIST_REMOVE(stcb, sctp_tcblist);
4906 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4907 SCTP_INP_INCR_REF(inp);
4908 SCTP_INP_WUNLOCK(inp);
4910 /* pull from vtag hash */
4911 LIST_REMOVE(stcb, sctp_asocs);
4912 sctp_add_vtag_to_timewait(asoc->my_vtag, SCTP_BASE_SYSCTL(sctp_vtag_time_wait),
4913 inp->sctp_lport, stcb->rport);
4916 * Now restop the timers to be sure this is paranoia at is finest!
4918 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4919 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4920 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4921 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4922 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4923 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4924 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4925 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4926 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4927 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4928 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4931 asoc->strreset_timer.type = SCTP_TIMER_TYPE_NONE;
4933 * The chunk lists and such SHOULD be empty but we check them just
4936 /* anything on the wheel needs to be removed */
4937 for (i = 0; i < asoc->streamoutcnt; i++) {
4938 struct sctp_stream_out *outs;
4940 outs = &asoc->strmout[i];
4941 /* now clean up any chunks here */
4942 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
4943 TAILQ_REMOVE(&outs->outqueue, sp, next);
4944 sctp_free_spbufspace(stcb, asoc, sp);
4947 /* Still an open socket - report */
4948 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
4949 0, (void *)sp, SCTP_SO_LOCKED);
4952 sctp_m_freem(sp->data);
4954 sp->tail_mbuf = NULL;
4959 sctp_free_remote_addr(sp->net);
4962 sctp_free_a_strmoq(stcb, sp, SCTP_SO_LOCKED);
4965 /* sa_ignore FREED_MEMORY */
4966 TAILQ_FOREACH_SAFE(strrst, &asoc->resetHead, next_resp, nstrrst) {
4967 TAILQ_REMOVE(&asoc->resetHead, strrst, next_resp);
4968 SCTP_FREE(strrst, SCTP_M_STRESET);
4970 TAILQ_FOREACH_SAFE(sq, &asoc->pending_reply_queue, next, nsq) {
4971 TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
4973 sctp_m_freem(sq->data);
4976 sctp_free_remote_addr(sq->whoFrom);
4979 /* Free the ctl entry */
4980 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
4981 SCTP_DECR_READQ_COUNT();
4982 /* sa_ignore FREED_MEMORY */
4984 TAILQ_FOREACH_SAFE(chk, &asoc->free_chunks, sctp_next, nchk) {
4985 TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next);
4987 sctp_m_freem(chk->data);
4990 if (chk->holds_key_ref)
4991 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4992 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4993 SCTP_DECR_CHK_COUNT();
4994 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1);
4995 asoc->free_chunk_cnt--;
4996 /* sa_ignore FREED_MEMORY */
4998 /* pending send queue SHOULD be empty */
4999 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
5000 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
5001 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
5004 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
5007 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
5010 /* Still a socket? */
5011 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
5012 0, chk, SCTP_SO_LOCKED);
5015 sctp_m_freem(chk->data);
5019 if (chk->holds_key_ref)
5020 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5022 sctp_free_remote_addr(chk->whoTo);
5025 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5026 SCTP_DECR_CHK_COUNT();
5027 /* sa_ignore FREED_MEMORY */
5029 /* sent queue SHOULD be empty */
5030 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
5031 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
5032 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
5033 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
5036 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
5040 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
5043 /* Still a socket? */
5044 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
5045 0, chk, SCTP_SO_LOCKED);
5048 sctp_m_freem(chk->data);
5052 if (chk->holds_key_ref)
5053 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5054 sctp_free_remote_addr(chk->whoTo);
5055 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5056 SCTP_DECR_CHK_COUNT();
5057 /* sa_ignore FREED_MEMORY */
5060 for (i = 0; i < stcb->asoc.streamoutcnt; i++) {
5061 if (stcb->asoc.strmout[i].chunks_on_queues > 0) {
5062 panic("%u chunks left for stream %u.", stcb->asoc.strmout[i].chunks_on_queues, i);
5066 /* control queue MAY not be empty */
5067 TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) {
5068 TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next);
5070 sctp_m_freem(chk->data);
5073 if (chk->holds_key_ref)
5074 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5075 sctp_free_remote_addr(chk->whoTo);
5076 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5077 SCTP_DECR_CHK_COUNT();
5078 /* sa_ignore FREED_MEMORY */
5080 /* ASCONF queue MAY not be empty */
5081 TAILQ_FOREACH_SAFE(chk, &asoc->asconf_send_queue, sctp_next, nchk) {
5082 TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next);
5084 sctp_m_freem(chk->data);
5087 if (chk->holds_key_ref)
5088 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5089 sctp_free_remote_addr(chk->whoTo);
5090 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5091 SCTP_DECR_CHK_COUNT();
5092 /* sa_ignore FREED_MEMORY */
5094 TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) {
5095 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
5097 sctp_m_freem(chk->data);
5100 if (chk->holds_key_ref)
5101 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5102 sctp_free_remote_addr(chk->whoTo);
5103 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5104 SCTP_DECR_CHK_COUNT();
5105 /* sa_ignore FREED_MEMORY */
5108 if (asoc->mapping_array) {
5109 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
5110 asoc->mapping_array = NULL;
5112 if (asoc->nr_mapping_array) {
5113 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
5114 asoc->nr_mapping_array = NULL;
5116 /* the stream outs */
5117 if (asoc->strmout) {
5118 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
5119 asoc->strmout = NULL;
5121 asoc->strm_realoutsize = asoc->streamoutcnt = 0;
5123 struct sctp_queued_to_read *ctl, *nctl;
5125 for (i = 0; i < asoc->streamincnt; i++) {
5126 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[i].inqueue, next, nctl) {
5127 TAILQ_REMOVE(&asoc->strmin[i].inqueue, ctl, next);
5128 sctp_free_remote_addr(ctl->whoFrom);
5130 sctp_m_freem(ctl->data);
5134 * We don't free the address here since all
5135 * the net's were freed above.
5137 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
5138 SCTP_DECR_READQ_COUNT();
5141 SCTP_FREE(asoc->strmin, SCTP_M_STRMI);
5142 asoc->strmin = NULL;
5144 asoc->streamincnt = 0;
5145 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
5147 if (SCTP_BASE_INFO(ipi_count_raddr) == 0) {
5148 panic("no net's left alloc'ed, or list points to itself");
5151 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
5152 sctp_free_remote_addr(net);
5154 LIST_FOREACH_SAFE(laddr, &asoc->sctp_restricted_addrs, sctp_nxt_addr, naddr) {
5155 /* sa_ignore FREED_MEMORY */
5156 sctp_remove_laddr(laddr);
5159 /* pending asconf (address) parameters */
5160 TAILQ_FOREACH_SAFE(aparam, &asoc->asconf_queue, next, naparam) {
5161 /* sa_ignore FREED_MEMORY */
5162 TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
5163 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
5165 TAILQ_FOREACH_SAFE(aack, &asoc->asconf_ack_sent, next, naack) {
5166 /* sa_ignore FREED_MEMORY */
5167 TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
5168 if (aack->data != NULL) {
5169 sctp_m_freem(aack->data);
5171 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
5173 /* clean up auth stuff */
5174 if (asoc->local_hmacs)
5175 sctp_free_hmaclist(asoc->local_hmacs);
5176 if (asoc->peer_hmacs)
5177 sctp_free_hmaclist(asoc->peer_hmacs);
5179 if (asoc->local_auth_chunks)
5180 sctp_free_chunklist(asoc->local_auth_chunks);
5181 if (asoc->peer_auth_chunks)
5182 sctp_free_chunklist(asoc->peer_auth_chunks);
5184 sctp_free_authinfo(&asoc->authinfo);
5186 LIST_FOREACH_SAFE(shared_key, &asoc->shared_keys, next, nshared_key) {
5187 LIST_REMOVE(shared_key, next);
5188 sctp_free_sharedkey(shared_key);
5189 /* sa_ignore FREED_MEMORY */
5192 /* Insert new items here :> */
5194 /* Get rid of LOCK */
5195 SCTP_TCB_UNLOCK(stcb);
5196 SCTP_TCB_LOCK_DESTROY(stcb);
5197 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
5198 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5199 SCTP_INP_INFO_WUNLOCK();
5200 SCTP_INP_RLOCK(inp);
5202 #ifdef SCTP_TRACK_FREED_ASOCS
5203 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5204 /* now clean up the tasoc itself */
5205 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5206 SCTP_DECR_ASOC_COUNT();
5208 LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist);
5211 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5212 SCTP_DECR_ASOC_COUNT();
5214 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5215 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5217 * If its NOT the inp_free calling us AND sctp_close
5218 * as been called, we call back...
5220 SCTP_INP_RUNLOCK(inp);
5222 * This will start the kill timer (if we are the
5223 * last one) since we hold an increment yet. But
5224 * this is the only safe way to do this since
5225 * otherwise if the socket closes at the same time
5226 * we are here we might collide in the cleanup.
5228 sctp_inpcb_free(inp,
5229 SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
5230 SCTP_CALLED_DIRECTLY_NOCMPSET);
5231 SCTP_INP_DECR_REF(inp);
5234 /* The socket is still open. */
5235 SCTP_INP_DECR_REF(inp);
5238 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5239 SCTP_INP_RUNLOCK(inp);
5242 /* destroyed the asoc */
5243 #ifdef SCTP_LOG_CLOSING
5244 sctp_log_closing(inp, NULL, 11);
5252 * determine if a destination is "reachable" based upon the addresses bound
5253 * to the current endpoint (e.g. only v4 or v6 currently bound)
5256 * FIX: if we allow assoc-level bindx(), then this needs to be fixed to use
5257 * assoc level v4/v6 flags, as the assoc *may* not have the same address
5258 * types bound as its endpoint
5261 sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
5263 struct sctp_inpcb *inp;
5267 * No locks here, the TCB, in all cases is already locked and an
5268 * assoc is up. There is either a INP lock by the caller applied (in
5269 * asconf case when deleting an address) or NOT in the HB case,
5270 * however if HB then the INP increment is up and the INP will not
5271 * be removed (on top of the fact that we have a TCB lock). So we
5272 * only want to read the sctp_flags, which is either bound-all or
5273 * not.. no protection needed since once an assoc is up you can't be
5274 * changing your binding.
5276 inp = stcb->sctp_ep;
5277 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5278 /* if bound all, destination is not restricted */
5280 * RRS: Question during lock work: Is this correct? If you
5281 * are bound-all you still might need to obey the V4--V6
5282 * flags??? IMO this bound-all stuff needs to be removed!
5286 /* NOTE: all "scope" checks are done when local addresses are added */
5287 switch (destaddr->sa_family) {
5290 answer = inp->ip_inp.inp.inp_vflag & INP_IPV6;
5295 answer = inp->ip_inp.inp.inp_vflag & INP_IPV4;
5299 /* invalid family, so it's unreachable */
5307 * update the inp_vflags on an endpoint
5310 sctp_update_ep_vflag(struct sctp_inpcb *inp)
5312 struct sctp_laddr *laddr;
5314 /* first clear the flag */
5315 inp->ip_inp.inp.inp_vflag = 0;
5316 /* set the flag based on addresses on the ep list */
5317 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5318 if (laddr->ifa == NULL) {
5319 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
5323 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
5326 switch (laddr->ifa->address.sa.sa_family) {
5329 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5334 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5344 * Add the address to the endpoint local address list There is nothing to be
5345 * done if we are bound to all addresses
5348 sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
5350 struct sctp_laddr *laddr;
5355 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5356 /* You are already bound to all. You have it already */
5360 if (ifa->address.sa.sa_family == AF_INET6) {
5361 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5362 /* Can't bind a non-useable addr. */
5367 /* first, is it already present? */
5368 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5369 if (laddr->ifa == ifa) {
5376 /* Not in the ep list */
5377 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action);
5381 /* update inp_vflag flags */
5382 switch (ifa->address.sa.sa_family) {
5385 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5390 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5402 * select a new (hopefully reachable) destination net (should only be used
5403 * when we deleted an ep addr that is the only usable source address to reach
5404 * the destination net)
5407 sctp_select_primary_destination(struct sctp_tcb *stcb)
5409 struct sctp_nets *net;
5411 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5412 /* for now, we'll just pick the first reachable one we find */
5413 if (net->dest_state & SCTP_ADDR_UNCONFIRMED)
5415 if (sctp_destination_is_reachable(stcb,
5416 (struct sockaddr *)&net->ro._l_addr)) {
5417 /* found a reachable destination */
5418 stcb->asoc.primary_destination = net;
5421 /* I can't there from here! ...we're gonna die shortly... */
5426 * Delete the address from the endpoint local address list There is nothing
5427 * to be done if we are bound to all addresses
5430 sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa)
5432 struct sctp_laddr *laddr;
5436 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5437 /* You are already bound to all. You have it already */
5440 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5441 if (laddr->ifa == ifa) {
5446 if (fnd && (inp->laddr_count < 2)) {
5447 /* can't delete unless there are at LEAST 2 addresses */
5452 * clean up any use of this address go through our
5453 * associations and clear any last_used_address that match
5454 * this one for each assoc, see if a new primary_destination
5457 struct sctp_tcb *stcb;
5459 /* clean up "next_addr_touse" */
5460 if (inp->next_addr_touse == laddr)
5461 /* delete this address */
5462 inp->next_addr_touse = NULL;
5464 /* clean up "last_used_address" */
5465 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5466 struct sctp_nets *net;
5468 SCTP_TCB_LOCK(stcb);
5469 if (stcb->asoc.last_used_address == laddr)
5470 /* delete this address */
5471 stcb->asoc.last_used_address = NULL;
5473 * Now spin through all the nets and purge any ref
5476 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5477 if (net->ro._s_addr &&
5478 (net->ro._s_addr->ifa == laddr->ifa)) {
5479 /* Yep, purge src address selected */
5482 /* delete this address if cached */
5486 net->ro.ro_rt = NULL;
5488 sctp_free_ifa(net->ro._s_addr);
5489 net->ro._s_addr = NULL;
5490 net->src_addr_selected = 0;
5493 SCTP_TCB_UNLOCK(stcb);
5494 } /* for each tcb */
5495 /* remove it from the ep list */
5496 sctp_remove_laddr(laddr);
5498 /* update inp_vflag flags */
5499 sctp_update_ep_vflag(inp);
5505 * Add the address to the TCB local address restricted list.
5506 * This is a "pending" address list (eg. addresses waiting for an
5507 * ASCONF-ACK response) and cannot be used as a valid source address.
5510 sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5512 struct sctp_laddr *laddr;
5513 struct sctpladdr *list;
5516 * Assumes TCB is locked.. and possibly the INP. May need to
5517 * confirm/fix that if we need it and is not the case.
5519 list = &stcb->asoc.sctp_restricted_addrs;
5522 if (ifa->address.sa.sa_family == AF_INET6) {
5523 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5524 /* Can't bind a non-existent addr. */
5529 /* does the address already exist? */
5530 LIST_FOREACH(laddr, list, sctp_nxt_addr) {
5531 if (laddr->ifa == ifa) {
5536 /* add to the list */
5537 (void)sctp_insert_laddr(list, ifa, 0);
5542 * insert an laddr entry with the given ifa for the desired list
5545 sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
5547 struct sctp_laddr *laddr;
5549 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
5550 if (laddr == NULL) {
5551 /* out of memory? */
5552 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
5555 SCTP_INCR_LADDR_COUNT();
5556 bzero(laddr, sizeof(*laddr));
5557 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
5559 laddr->action = act;
5560 atomic_add_int(&ifa->refcount, 1);
5562 LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr);
5568 * Remove an laddr entry from the local address list (on an assoc)
5571 sctp_remove_laddr(struct sctp_laddr *laddr)
5574 /* remove from the list */
5575 LIST_REMOVE(laddr, sctp_nxt_addr);
5576 sctp_free_ifa(laddr->ifa);
5577 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr);
5578 SCTP_DECR_LADDR_COUNT();
5582 * Remove a local address from the TCB local address restricted list
5585 sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5587 struct sctp_inpcb *inp;
5588 struct sctp_laddr *laddr;
5591 * This is called by asconf work. It is assumed that a) The TCB is
5592 * locked and b) The INP is locked. This is true in as much as I can
5593 * trace through the entry asconf code where I did these locks.
5594 * Again, the ASCONF code is a bit different in that it does lock
5595 * the INP during its work often times. This must be since we don't
5596 * want other proc's looking up things while what they are looking
5597 * up is changing :-D
5600 inp = stcb->sctp_ep;
5601 /* if subset bound and don't allow ASCONF's, can't delete last */
5602 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
5603 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
5604 if (stcb->sctp_ep->laddr_count < 2) {
5605 /* can't delete last address */
5609 LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
5610 /* remove the address if it exists */
5611 if (laddr->ifa == NULL)
5613 if (laddr->ifa == ifa) {
5614 sctp_remove_laddr(laddr);
5619 /* address not found! */
5624 * Temporarily remove for __APPLE__ until we use the Tiger equivalents
5627 static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;
5628 static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR;
5632 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5633 struct sctp_mcore_ctrl *sctp_mcore_workers = NULL;
5634 int *sctp_cpuarry = NULL;
5636 sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use)
5638 /* Queue a packet to a processor for the specified core */
5639 struct sctp_mcore_queue *qent;
5640 struct sctp_mcore_ctrl *wkq;
5643 if (sctp_mcore_workers == NULL) {
5644 /* Something went way bad during setup */
5645 sctp_input_with_port(m, off, 0);
5648 SCTP_MALLOC(qent, struct sctp_mcore_queue *,
5649 (sizeof(struct sctp_mcore_queue)),
5652 /* This is trouble */
5653 sctp_input_with_port(m, off, 0);
5660 wkq = &sctp_mcore_workers[cpu_to_use];
5661 SCTP_MCORE_QLOCK(wkq);
5663 TAILQ_INSERT_TAIL(&wkq->que, qent, next);
5664 if (wkq->running == 0) {
5667 SCTP_MCORE_QUNLOCK(wkq);
5669 wakeup(&wkq->running);
5674 sctp_mcore_thread(void *arg)
5677 struct sctp_mcore_ctrl *wkq;
5678 struct sctp_mcore_queue *qent;
5680 wkq = (struct sctp_mcore_ctrl *)arg;
5684 /* Wait for first tickle */
5685 SCTP_MCORE_LOCK(wkq);
5687 msleep(&wkq->running,
5689 0, "wait for pkt", 0);
5690 SCTP_MCORE_UNLOCK(wkq);
5692 /* Bind to our cpu */
5693 thread_lock(curthread);
5694 sched_bind(curthread, wkq->cpuid);
5695 thread_unlock(curthread);
5697 /* Now lets start working */
5698 SCTP_MCORE_LOCK(wkq);
5699 /* Now grab lock and go */
5701 SCTP_MCORE_QLOCK(wkq);
5704 qent = TAILQ_FIRST(&wkq->que);
5706 TAILQ_REMOVE(&wkq->que, qent, next);
5707 SCTP_MCORE_QUNLOCK(wkq);
5708 CURVNET_SET(qent->vn);
5712 SCTP_FREE(qent, SCTP_M_MCORE);
5714 sctp_input_with_port(m, off, 0);
5716 SCTP_PRINTF("V6 not yet supported\n");
5720 SCTP_MCORE_QLOCK(wkq);
5723 if (!TAILQ_EMPTY(&wkq->que)) {
5726 SCTP_MCORE_QUNLOCK(wkq);
5727 msleep(&wkq->running,
5729 0, "wait for pkt", 0);
5734 sctp_startup_mcore_threads(void)
5741 if (sctp_mcore_workers != NULL) {
5743 * Already been here in some previous vnet?
5747 SCTP_MALLOC(sctp_mcore_workers, struct sctp_mcore_ctrl *,
5748 ((mp_maxid + 1) * sizeof(struct sctp_mcore_ctrl)),
5750 if (sctp_mcore_workers == NULL) {
5754 memset(sctp_mcore_workers, 0, ((mp_maxid + 1) *
5755 sizeof(struct sctp_mcore_ctrl)));
5756 /* Init the structures */
5757 for (i = 0; i <= mp_maxid; i++) {
5758 TAILQ_INIT(&sctp_mcore_workers[i].que);
5759 SCTP_MCORE_LOCK_INIT(&sctp_mcore_workers[i]);
5760 SCTP_MCORE_QLOCK_INIT(&sctp_mcore_workers[i]);
5761 sctp_mcore_workers[i].cpuid = i;
5763 if (sctp_cpuarry == NULL) {
5764 SCTP_MALLOC(sctp_cpuarry, int *,
5765 (mp_ncpus * sizeof(int)),
5769 sctp_cpuarry[i] = cpu;
5773 /* Now start them all */
5775 (void)kproc_create(sctp_mcore_thread,
5776 (void *)&sctp_mcore_workers[cpu],
5777 &sctp_mcore_workers[cpu].thread_proc,
5791 * SCTP initialization for the PCB structures should be called by
5792 * the sctp_init() funciton.
5797 if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) {
5798 /* error I was called twice */
5801 SCTP_BASE_VAR(sctp_pcb_initialized) = 1;
5803 #if defined(SCTP_LOCAL_TRACE_BUF)
5804 bzero(&SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));
5806 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5807 SCTP_MALLOC(SCTP_BASE_STATS, struct sctpstat *,
5808 ((mp_maxid + 1) * sizeof(struct sctpstat)),
5811 (void)SCTP_GETTIME_TIMEVAL(&tv);
5812 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5813 bzero(SCTP_BASE_STATS, (sizeof(struct sctpstat) * (mp_maxid + 1)));
5814 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t) tv.tv_sec;
5815 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t) tv.tv_usec;
5817 bzero(&SCTP_BASE_STATS, sizeof(struct sctpstat));
5818 SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t) tv.tv_sec;
5819 SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t) tv.tv_usec;
5821 /* init the empty list of (All) Endpoints */
5822 LIST_INIT(&SCTP_BASE_INFO(listhead));
5825 /* init the hash table of endpoints */
5826 TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize));
5827 TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize));
5828 TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale));
5829 SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31),
5830 &SCTP_BASE_INFO(hashasocmark));
5831 SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5832 &SCTP_BASE_INFO(hashmark));
5833 SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5834 &SCTP_BASE_INFO(hashtcpmark));
5835 SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize);
5838 SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH,
5839 &SCTP_BASE_INFO(hashvrfmark));
5841 SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE,
5842 &SCTP_BASE_INFO(vrf_ifn_hashmark));
5843 /* init the zones */
5845 * FIX ME: Should check for NULL returns, but if it does fail we are
5846 * doomed to panic anyways... add later maybe.
5848 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep",
5849 sizeof(struct sctp_inpcb), maxsockets);
5851 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc",
5852 sizeof(struct sctp_tcb), sctp_max_number_of_assoc);
5854 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr",
5855 sizeof(struct sctp_laddr),
5856 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5858 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr",
5859 sizeof(struct sctp_nets),
5860 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5862 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk",
5863 sizeof(struct sctp_tmit_chunk),
5864 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5866 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq",
5867 sizeof(struct sctp_queued_to_read),
5868 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5870 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out",
5871 sizeof(struct sctp_stream_queue_pending),
5872 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5874 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf",
5875 sizeof(struct sctp_asconf),
5876 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5878 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack",
5879 sizeof(struct sctp_asconf_ack),
5880 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5883 /* Master Lock INIT for info structure */
5884 SCTP_INP_INFO_LOCK_INIT();
5885 SCTP_STATLOG_INIT_LOCK();
5887 SCTP_IPI_COUNT_INIT();
5888 SCTP_IPI_ADDR_INIT();
5889 #ifdef SCTP_PACKET_LOGGING
5890 SCTP_IP_PKTLOG_INIT();
5892 LIST_INIT(&SCTP_BASE_INFO(addr_wq));
5894 SCTP_WQ_ADDR_INIT();
5895 /* not sure if we need all the counts */
5896 SCTP_BASE_INFO(ipi_count_ep) = 0;
5897 /* assoc/tcb zone info */
5898 SCTP_BASE_INFO(ipi_count_asoc) = 0;
5899 /* local addrlist zone info */
5900 SCTP_BASE_INFO(ipi_count_laddr) = 0;
5901 /* remote addrlist zone info */
5902 SCTP_BASE_INFO(ipi_count_raddr) = 0;
5904 SCTP_BASE_INFO(ipi_count_chunk) = 0;
5906 /* socket queue zone info */
5907 SCTP_BASE_INFO(ipi_count_readq) = 0;
5909 /* stream out queue cont */
5910 SCTP_BASE_INFO(ipi_count_strmoq) = 0;
5912 SCTP_BASE_INFO(ipi_free_strmoq) = 0;
5913 SCTP_BASE_INFO(ipi_free_chunks) = 0;
5915 SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer));
5917 /* Init the TIMEWAIT list */
5918 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5919 LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]);
5921 sctp_startup_iterator();
5923 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5924 sctp_startup_mcore_threads();
5928 * INIT the default VRF which for BSD is the only one, other O/S's
5929 * may have more. But initially they must start with one and then
5930 * add the VRF's as addresses are added.
5932 sctp_init_vrf_list(SCTP_DEFAULT_VRF);
5936 * Assumes that the SCTP_BASE_INFO() lock is NOT held.
5939 sctp_pcb_finish(void)
5941 struct sctp_vrflist *vrf_bucket;
5942 struct sctp_vrf *vrf, *nvrf;
5943 struct sctp_ifn *ifn, *nifn;
5944 struct sctp_ifa *ifa, *nifa;
5945 struct sctpvtaghead *chain;
5946 struct sctp_tagblock *twait_block, *prev_twait_block;
5947 struct sctp_laddr *wi, *nwi;
5949 struct sctp_iterator *it, *nit;
5952 * In FreeBSD the iterator thread never exits but we do clean up.
5953 * The only way FreeBSD reaches here is if we have VRF's but we
5954 * still add the ifdef to make it compile on old versions.
5956 SCTP_IPI_ITERATOR_WQ_LOCK();
5957 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
5958 if (it->vn != curvnet) {
5961 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
5962 if (it->function_atend != NULL) {
5963 (*it->function_atend) (it->pointer, it->val);
5965 SCTP_FREE(it, SCTP_M_ITER);
5967 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5968 SCTP_ITERATOR_LOCK();
5969 if ((sctp_it_ctl.cur_it) &&
5970 (sctp_it_ctl.cur_it->vn == curvnet)) {
5971 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
5973 SCTP_ITERATOR_UNLOCK();
5974 SCTP_OS_TIMER_STOP(&SCTP_BASE_INFO(addr_wq_timer.timer));
5975 SCTP_WQ_ADDR_LOCK();
5976 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
5977 LIST_REMOVE(wi, sctp_nxt_addr);
5978 SCTP_DECR_LADDR_COUNT();
5979 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi);
5981 SCTP_WQ_ADDR_UNLOCK();
5984 * free the vrf/ifn/ifa lists and hashes (be sure address monitor is
5987 vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))];
5988 LIST_FOREACH_SAFE(vrf, vrf_bucket, next_vrf, nvrf) {
5989 LIST_FOREACH_SAFE(ifn, &vrf->ifnlist, next_ifn, nifn) {
5990 LIST_FOREACH_SAFE(ifa, &ifn->ifalist, next_ifa, nifa) {
5992 LIST_REMOVE(ifa, next_bucket);
5993 LIST_REMOVE(ifa, next_ifa);
5994 SCTP_FREE(ifa, SCTP_M_IFA);
5997 LIST_REMOVE(ifn, next_bucket);
5998 LIST_REMOVE(ifn, next_ifn);
5999 SCTP_FREE(ifn, SCTP_M_IFN);
6001 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
6003 LIST_REMOVE(vrf, next_vrf);
6004 SCTP_FREE(vrf, SCTP_M_VRF);
6006 /* free the vrf hashes */
6007 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark));
6008 SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark));
6011 * free the TIMEWAIT list elements malloc'd in the function
6012 * sctp_add_vtag_to_timewait()...
6014 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
6015 chain = &SCTP_BASE_INFO(vtag_timewait)[i];
6016 if (!LIST_EMPTY(chain)) {
6017 prev_twait_block = NULL;
6018 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6019 if (prev_twait_block) {
6020 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
6022 prev_twait_block = twait_block;
6024 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
6028 /* free the locks and mutexes */
6029 #ifdef SCTP_PACKET_LOGGING
6030 SCTP_IP_PKTLOG_DESTROY();
6032 SCTP_IPI_ADDR_DESTROY();
6033 SCTP_STATLOG_DESTROY();
6034 SCTP_INP_INFO_LOCK_DESTROY();
6036 SCTP_WQ_ADDR_DESTROY();
6038 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep));
6039 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc));
6040 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr));
6041 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net));
6042 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk));
6043 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq));
6044 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq));
6045 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf));
6046 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack));
6047 /* Get rid of other stuff to */
6048 if (SCTP_BASE_INFO(sctp_asochash) != NULL)
6049 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark));
6050 if (SCTP_BASE_INFO(sctp_ephash) != NULL)
6051 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark));
6052 if (SCTP_BASE_INFO(sctp_tcpephash) != NULL)
6053 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark));
6054 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
6055 SCTP_FREE(SCTP_BASE_STATS, SCTP_M_MCORE);
6061 sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m,
6062 int offset, int limit,
6063 struct sockaddr *src, struct sockaddr *dst,
6064 struct sockaddr *altsa)
6067 * grub through the INIT pulling addresses and loading them to the
6068 * nets structure in the asoc. The from address in the mbuf should
6069 * also be loaded (if it is not already). This routine can be called
6070 * with either INIT or INIT-ACK's as long as the m points to the IP
6071 * packet and the offset points to the beginning of the parameters.
6073 struct sctp_inpcb *inp;
6074 struct sctp_nets *net, *nnet, *net_tmp;
6075 struct sctp_paramhdr *phdr, parm_buf;
6076 struct sctp_tcb *stcb_tmp;
6077 uint16_t ptype, plen;
6078 struct sockaddr *sa;
6079 uint8_t random_store[SCTP_PARAM_BUFFER_SIZE];
6080 struct sctp_auth_random *p_random = NULL;
6081 uint16_t random_len = 0;
6082 uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE];
6083 struct sctp_auth_hmac_algo *hmacs = NULL;
6084 uint16_t hmacs_len = 0;
6085 uint8_t saw_asconf = 0;
6086 uint8_t saw_asconf_ack = 0;
6087 uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE];
6088 struct sctp_auth_chunk_list *chunks = NULL;
6089 uint16_t num_chunks = 0;
6090 sctp_key_t *new_key;
6092 int got_random = 0, got_hmacs = 0, got_chklist = 0;
6093 uint8_t peer_supports_ecn;
6094 uint8_t peer_supports_prsctp;
6095 uint8_t peer_supports_auth;
6096 uint8_t peer_supports_asconf;
6097 uint8_t peer_supports_asconf_ack;
6098 uint8_t peer_supports_reconfig;
6099 uint8_t peer_supports_nrsack;
6100 uint8_t peer_supports_pktdrop;
6103 struct sockaddr_in sin;
6107 struct sockaddr_in6 sin6;
6111 /* First get the destination address setup too. */
6113 memset(&sin, 0, sizeof(sin));
6114 sin.sin_family = AF_INET;
6115 sin.sin_len = sizeof(sin);
6116 sin.sin_port = stcb->rport;
6119 memset(&sin6, 0, sizeof(sin6));
6120 sin6.sin6_family = AF_INET6;
6121 sin6.sin6_len = sizeof(struct sockaddr_in6);
6122 sin6.sin6_port = stcb->rport;
6129 peer_supports_ecn = 0;
6130 peer_supports_prsctp = 0;
6131 peer_supports_auth = 0;
6132 peer_supports_asconf = 0;
6133 peer_supports_asconf = 0;
6134 peer_supports_reconfig = 0;
6135 peer_supports_nrsack = 0;
6136 peer_supports_pktdrop = 0;
6137 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
6138 /* mark all addresses that we have currently on the list */
6139 net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC;
6141 /* does the source address already exist? if so skip it */
6142 inp = stcb->sctp_ep;
6143 atomic_add_int(&stcb->asoc.refcnt, 1);
6144 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, dst, stcb);
6145 atomic_add_int(&stcb->asoc.refcnt, -1);
6147 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) {
6148 /* we must add the source address */
6149 /* no scope set here since we have a tcb already. */
6150 switch (sa->sa_family) {
6153 if (stcb->asoc.scope.ipv4_addr_legal) {
6154 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) {
6162 if (stcb->asoc.scope.ipv6_addr_legal) {
6163 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
6173 if (net_tmp != NULL && stcb_tmp == stcb) {
6174 net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC;
6175 } else if (stcb_tmp != stcb) {
6176 /* It belongs to another association? */
6178 SCTP_TCB_UNLOCK(stcb_tmp);
6182 if (stcb->asoc.state == 0) {
6183 /* the assoc was freed? */
6186 /* now we must go through each of the params. */
6187 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
6189 ptype = ntohs(phdr->param_type);
6190 plen = ntohs(phdr->param_length);
6192 * SCTP_PRINTF("ptype => %0x, plen => %d\n",
6193 * (uint32_t)ptype, (int)plen);
6195 if (offset + plen > limit) {
6202 if (ptype == SCTP_IPV4_ADDRESS) {
6203 if (stcb->asoc.scope.ipv4_addr_legal) {
6204 struct sctp_ipv4addr_param *p4, p4_buf;
6206 /* ok get the v4 address and check/add */
6207 phdr = sctp_get_next_param(m, offset,
6208 (struct sctp_paramhdr *)&p4_buf,
6210 if (plen != sizeof(struct sctp_ipv4addr_param) ||
6214 p4 = (struct sctp_ipv4addr_param *)phdr;
6215 sin.sin_addr.s_addr = p4->addr;
6216 if (IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) {
6217 /* Skip multi-cast addresses */
6220 if ((sin.sin_addr.s_addr == INADDR_BROADCAST) ||
6221 (sin.sin_addr.s_addr == INADDR_ANY)) {
6224 sa = (struct sockaddr *)&sin;
6225 inp = stcb->sctp_ep;
6226 atomic_add_int(&stcb->asoc.refcnt, 1);
6227 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6229 atomic_add_int(&stcb->asoc.refcnt, -1);
6231 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) ||
6233 /* we must add the source address */
6235 * no scope set since we have a tcb
6240 * we must validate the state again
6244 if (stcb->asoc.state == 0) {
6245 /* the assoc was freed? */
6248 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) {
6251 } else if (stcb_tmp == stcb) {
6252 if (stcb->asoc.state == 0) {
6253 /* the assoc was freed? */
6259 ~SCTP_ADDR_NOT_IN_ASSOC;
6263 * strange, address is in another
6264 * assoc? straighten out locks.
6267 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6272 sctp_abort_an_association(stcb_tmp->sctp_ep,
6273 stcb_tmp, NULL, SCTP_SO_NOT_LOCKED);
6276 SCTP_TCB_UNLOCK(stcb_tmp);
6278 if (stcb->asoc.state == 0) {
6279 /* the assoc was freed? */
6288 if (ptype == SCTP_IPV6_ADDRESS) {
6289 if (stcb->asoc.scope.ipv6_addr_legal) {
6290 /* ok get the v6 address and check/add */
6291 struct sctp_ipv6addr_param *p6, p6_buf;
6293 phdr = sctp_get_next_param(m, offset,
6294 (struct sctp_paramhdr *)&p6_buf,
6296 if (plen != sizeof(struct sctp_ipv6addr_param) ||
6300 p6 = (struct sctp_ipv6addr_param *)phdr;
6301 memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
6303 if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) {
6304 /* Skip multi-cast addresses */
6307 if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) {
6309 * Link local make no sense without
6314 sa = (struct sockaddr *)&sin6;
6315 inp = stcb->sctp_ep;
6316 atomic_add_int(&stcb->asoc.refcnt, 1);
6317 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6319 atomic_add_int(&stcb->asoc.refcnt, -1);
6320 if (stcb_tmp == NULL &&
6321 (inp == stcb->sctp_ep || inp == NULL)) {
6323 * we must validate the state again
6327 if (stcb->asoc.state == 0) {
6328 /* the assoc was freed? */
6332 * we must add the address, no scope
6335 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) {
6338 } else if (stcb_tmp == stcb) {
6340 * we must validate the state again
6343 if (stcb->asoc.state == 0) {
6344 /* the assoc was freed? */
6350 ~SCTP_ADDR_NOT_IN_ASSOC;
6354 * strange, address is in another
6355 * assoc? straighten out locks.
6358 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6363 sctp_abort_an_association(stcb_tmp->sctp_ep,
6364 stcb_tmp, NULL, SCTP_SO_NOT_LOCKED);
6367 SCTP_TCB_UNLOCK(stcb_tmp);
6369 if (stcb->asoc.state == 0) {
6370 /* the assoc was freed? */
6378 if (ptype == SCTP_ECN_CAPABLE) {
6379 peer_supports_ecn = 1;
6380 } else if (ptype == SCTP_ULP_ADAPTATION) {
6381 if (stcb->asoc.state != SCTP_STATE_OPEN) {
6382 struct sctp_adaptation_layer_indication ai,
6385 phdr = sctp_get_next_param(m, offset,
6386 (struct sctp_paramhdr *)&ai, sizeof(ai));
6387 aip = (struct sctp_adaptation_layer_indication *)phdr;
6389 stcb->asoc.peers_adaptation = ntohl(aip->indication);
6390 stcb->asoc.adaptation_needed = 1;
6393 } else if (ptype == SCTP_SET_PRIM_ADDR) {
6394 struct sctp_asconf_addr_param lstore, *fee;
6396 struct sockaddr *lsa = NULL;
6399 struct sctp_asconf_addrv4_param *fii;
6403 if (stcb->asoc.asconf_supported == 0) {
6406 if (plen > sizeof(lstore)) {
6409 phdr = sctp_get_next_param(m, offset,
6410 (struct sctp_paramhdr *)&lstore,
6411 min(plen, sizeof(lstore)));
6415 fee = (struct sctp_asconf_addr_param *)phdr;
6416 lptype = ntohs(fee->addrp.ph.param_type);
6419 case SCTP_IPV4_ADDRESS:
6421 sizeof(struct sctp_asconf_addrv4_param)) {
6422 SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n",
6423 (int)sizeof(struct sctp_asconf_addrv4_param),
6426 fii = (struct sctp_asconf_addrv4_param *)fee;
6427 sin.sin_addr.s_addr = fii->addrp.addr;
6428 lsa = (struct sockaddr *)&sin;
6433 case SCTP_IPV6_ADDRESS:
6435 sizeof(struct sctp_asconf_addr_param)) {
6436 SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n",
6437 (int)sizeof(struct sctp_asconf_addr_param),
6440 memcpy(sin6.sin6_addr.s6_addr,
6442 sizeof(fee->addrp.addr));
6443 lsa = (struct sockaddr *)&sin6;
6451 (void)sctp_set_primary_addr(stcb, sa, NULL);
6453 } else if (ptype == SCTP_HAS_NAT_SUPPORT) {
6454 stcb->asoc.peer_supports_nat = 1;
6455 } else if (ptype == SCTP_PRSCTP_SUPPORTED) {
6456 /* Peer supports pr-sctp */
6457 peer_supports_prsctp = 1;
6458 } else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) {
6459 /* A supported extension chunk */
6460 struct sctp_supported_chunk_types_param *pr_supported;
6461 uint8_t local_store[SCTP_PARAM_BUFFER_SIZE];
6464 phdr = sctp_get_next_param(m, offset,
6465 (struct sctp_paramhdr *)&local_store, min(sizeof(local_store), plen));
6469 pr_supported = (struct sctp_supported_chunk_types_param *)phdr;
6470 num_ent = plen - sizeof(struct sctp_paramhdr);
6471 for (i = 0; i < num_ent; i++) {
6472 switch (pr_supported->chunk_types[i]) {
6474 peer_supports_asconf = 1;
6475 case SCTP_ASCONF_ACK:
6476 peer_supports_asconf_ack = 1;
6478 case SCTP_FORWARD_CUM_TSN:
6479 peer_supports_prsctp = 1;
6481 case SCTP_PACKET_DROPPED:
6482 peer_supports_pktdrop = 1;
6484 case SCTP_NR_SELECTIVE_ACK:
6485 peer_supports_nrsack = 1;
6487 case SCTP_STREAM_RESET:
6488 peer_supports_reconfig = 1;
6490 case SCTP_AUTHENTICATION:
6491 peer_supports_auth = 1;
6494 /* one I have not learned yet */
6499 } else if (ptype == SCTP_RANDOM) {
6500 if (plen > sizeof(random_store))
6503 /* already processed a RANDOM */
6506 phdr = sctp_get_next_param(m, offset,
6507 (struct sctp_paramhdr *)random_store,
6508 min(sizeof(random_store), plen));
6511 p_random = (struct sctp_auth_random *)phdr;
6512 random_len = plen - sizeof(*p_random);
6513 /* enforce the random length */
6514 if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) {
6515 SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n");
6519 } else if (ptype == SCTP_HMAC_LIST) {
6523 if (plen > sizeof(hmacs_store))
6526 /* already processed a HMAC list */
6529 phdr = sctp_get_next_param(m, offset,
6530 (struct sctp_paramhdr *)hmacs_store,
6531 min(plen, sizeof(hmacs_store)));
6534 hmacs = (struct sctp_auth_hmac_algo *)phdr;
6535 hmacs_len = plen - sizeof(*hmacs);
6536 num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]);
6537 /* validate the hmac list */
6538 if (sctp_verify_hmac_param(hmacs, num_hmacs)) {
6541 if (stcb->asoc.peer_hmacs != NULL)
6542 sctp_free_hmaclist(stcb->asoc.peer_hmacs);
6543 stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs);
6544 if (stcb->asoc.peer_hmacs != NULL) {
6545 for (i = 0; i < num_hmacs; i++) {
6546 (void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs,
6547 ntohs(hmacs->hmac_ids[i]));
6551 } else if (ptype == SCTP_CHUNK_LIST) {
6554 if (plen > sizeof(chunks_store))
6557 /* already processed a Chunks list */
6560 phdr = sctp_get_next_param(m, offset,
6561 (struct sctp_paramhdr *)chunks_store,
6562 min(plen, sizeof(chunks_store)));
6565 chunks = (struct sctp_auth_chunk_list *)phdr;
6566 num_chunks = plen - sizeof(*chunks);
6567 if (stcb->asoc.peer_auth_chunks != NULL)
6568 sctp_clear_chunklist(stcb->asoc.peer_auth_chunks);
6570 stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist();
6571 for (i = 0; i < num_chunks; i++) {
6572 (void)sctp_auth_add_chunk(chunks->chunk_types[i],
6573 stcb->asoc.peer_auth_chunks);
6574 /* record asconf/asconf-ack if listed */
6575 if (chunks->chunk_types[i] == SCTP_ASCONF)
6577 if (chunks->chunk_types[i] == SCTP_ASCONF_ACK)
6582 } else if ((ptype == SCTP_HEARTBEAT_INFO) ||
6583 (ptype == SCTP_STATE_COOKIE) ||
6584 (ptype == SCTP_UNRECOG_PARAM) ||
6585 (ptype == SCTP_COOKIE_PRESERVE) ||
6586 (ptype == SCTP_SUPPORTED_ADDRTYPE) ||
6587 (ptype == SCTP_ADD_IP_ADDRESS) ||
6588 (ptype == SCTP_DEL_IP_ADDRESS) ||
6589 (ptype == SCTP_ERROR_CAUSE_IND) ||
6590 (ptype == SCTP_SUCCESS_REPORT)) {
6593 if ((ptype & 0x8000) == 0x0000) {
6595 * must stop processing the rest of the
6596 * param's. Any report bits were handled
6598 * sctp_arethere_unrecognized_parameters()
6599 * when the INIT or INIT-ACK was first seen.
6606 offset += SCTP_SIZE32(plen);
6607 if (offset >= limit) {
6610 phdr = sctp_get_next_param(m, offset, &parm_buf,
6613 /* Now check to see if we need to purge any addresses */
6614 TAILQ_FOREACH_SAFE(net, &stcb->asoc.nets, sctp_next, nnet) {
6615 if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) ==
6616 SCTP_ADDR_NOT_IN_ASSOC) {
6617 /* This address has been removed from the asoc */
6618 /* remove and free it */
6619 stcb->asoc.numnets--;
6620 TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next);
6621 sctp_free_remote_addr(net);
6622 if (net == stcb->asoc.primary_destination) {
6623 stcb->asoc.primary_destination = NULL;
6624 sctp_select_primary_destination(stcb);
6628 if ((stcb->asoc.ecn_supported == 1) &&
6629 (peer_supports_ecn == 0)) {
6630 stcb->asoc.ecn_supported = 0;
6632 if ((stcb->asoc.prsctp_supported == 1) &&
6633 (peer_supports_prsctp == 0)) {
6634 stcb->asoc.prsctp_supported = 0;
6636 if ((stcb->asoc.auth_supported == 1) &&
6637 ((peer_supports_auth == 0) ||
6638 (got_random == 0) || (got_hmacs == 0))) {
6639 stcb->asoc.auth_supported = 0;
6641 if ((stcb->asoc.asconf_supported == 1) &&
6642 ((peer_supports_asconf == 0) || (peer_supports_asconf_ack == 0) ||
6643 (stcb->asoc.auth_supported == 0) ||
6644 (saw_asconf == 0) || (saw_asconf_ack == 0))) {
6645 stcb->asoc.asconf_supported = 0;
6647 if ((stcb->asoc.reconfig_supported == 1) &&
6648 (peer_supports_reconfig == 0)) {
6649 stcb->asoc.reconfig_supported = 0;
6651 if ((stcb->asoc.nrsack_supported == 1) &&
6652 (peer_supports_nrsack == 0)) {
6653 stcb->asoc.nrsack_supported = 0;
6655 if ((stcb->asoc.pktdrop_supported == 1) &&
6656 (peer_supports_pktdrop == 0)) {
6657 stcb->asoc.pktdrop_supported = 0;
6659 /* validate authentication required parameters */
6660 if ((peer_supports_auth == 0) && (got_chklist == 1)) {
6661 /* peer does not support auth but sent a chunks list? */
6664 if ((peer_supports_asconf == 1) && (peer_supports_auth == 0)) {
6665 /* peer supports asconf but not auth? */
6667 } else if ((peer_supports_asconf == 1) &&
6668 (peer_supports_auth == 1) &&
6669 ((saw_asconf == 0) || (saw_asconf_ack == 0))) {
6672 /* concatenate the full random key */
6673 keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len;
6674 if (chunks != NULL) {
6675 keylen += sizeof(*chunks) + num_chunks;
6677 new_key = sctp_alloc_key(keylen);
6678 if (new_key != NULL) {
6679 /* copy in the RANDOM */
6680 if (p_random != NULL) {
6681 keylen = sizeof(*p_random) + random_len;
6682 bcopy(p_random, new_key->key, keylen);
6684 /* append in the AUTH chunks */
6685 if (chunks != NULL) {
6686 bcopy(chunks, new_key->key + keylen,
6687 sizeof(*chunks) + num_chunks);
6688 keylen += sizeof(*chunks) + num_chunks;
6690 /* append in the HMACs */
6691 if (hmacs != NULL) {
6692 bcopy(hmacs, new_key->key + keylen,
6693 sizeof(*hmacs) + hmacs_len);
6696 /* failed to get memory for the key */
6699 if (stcb->asoc.authinfo.peer_random != NULL)
6700 sctp_free_key(stcb->asoc.authinfo.peer_random);
6701 stcb->asoc.authinfo.peer_random = new_key;
6702 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid);
6703 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid);
6709 sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa,
6710 struct sctp_nets *net)
6712 /* make sure the requested primary address exists in the assoc */
6713 if (net == NULL && sa)
6714 net = sctp_findnet(stcb, sa);
6717 /* didn't find the requested primary address! */
6720 /* set the primary address */
6721 if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
6722 /* Must be confirmed, so queue to set */
6723 net->dest_state |= SCTP_ADDR_REQ_PRIMARY;
6726 stcb->asoc.primary_destination = net;
6727 if (!(net->dest_state & SCTP_ADDR_PF) && (stcb->asoc.alternate)) {
6728 sctp_free_remote_addr(stcb->asoc.alternate);
6729 stcb->asoc.alternate = NULL;
6731 net = TAILQ_FIRST(&stcb->asoc.nets);
6732 if (net != stcb->asoc.primary_destination) {
6734 * first one on the list is NOT the primary
6735 * sctp_cmpaddr() is much more efficient if the
6736 * primary is the first on the list, make it so.
6738 TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6739 TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6746 sctp_is_vtag_good(uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now)
6749 * This function serves two purposes. It will see if a TAG can be
6750 * re-used and return 1 for yes it is ok and 0 for don't use that
6751 * tag. A secondary function it will do is purge out old tags that
6754 struct sctpvtaghead *chain;
6755 struct sctp_tagblock *twait_block;
6756 struct sctpasochead *head;
6757 struct sctp_tcb *stcb;
6760 SCTP_INP_INFO_RLOCK();
6761 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag,
6762 SCTP_BASE_INFO(hashasocmark))];
6765 goto skip_vtag_check;
6767 LIST_FOREACH(stcb, head, sctp_asocs) {
6769 * We choose not to lock anything here. TCB's can't be
6770 * removed since we have the read lock, so they can't be
6771 * freed on us, same thing for the INP. I may be wrong with
6772 * this assumption, but we will go with it for now :-)
6774 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
6777 if (stcb->asoc.my_vtag == tag) {
6779 if (stcb->rport != rport) {
6782 if (stcb->sctp_ep->sctp_lport != lport) {
6785 /* Its a used tag set */
6786 SCTP_INP_INFO_RUNLOCK();
6792 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
6793 /* Now what about timed wait ? */
6794 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6796 * Block(s) are present, lets see if we have this tag in the
6799 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
6800 if (twait_block->vtag_block[i].v_tag == 0) {
6803 } else if ((long)twait_block->vtag_block[i].tv_sec_at_expire <
6805 /* Audit expires this guy */
6806 twait_block->vtag_block[i].tv_sec_at_expire = 0;
6807 twait_block->vtag_block[i].v_tag = 0;
6808 twait_block->vtag_block[i].lport = 0;
6809 twait_block->vtag_block[i].rport = 0;
6810 } else if ((twait_block->vtag_block[i].v_tag == tag) &&
6811 (twait_block->vtag_block[i].lport == lport) &&
6812 (twait_block->vtag_block[i].rport == rport)) {
6813 /* Bad tag, sorry :< */
6814 SCTP_INP_INFO_RUNLOCK();
6819 SCTP_INP_INFO_RUNLOCK();
6824 sctp_drain_mbufs(struct sctp_tcb *stcb)
6827 * We must hunt this association for MBUF's past the cumack (i.e.
6828 * out of order data that we can renege on).
6830 struct sctp_association *asoc;
6831 struct sctp_tmit_chunk *chk, *nchk;
6832 uint32_t cumulative_tsn_p1;
6833 struct sctp_queued_to_read *ctl, *nctl;
6838 /* We look for anything larger than the cum-ack + 1 */
6841 if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) {
6842 /* none we can reneg on. */
6845 SCTP_STAT_INCR(sctps_protocol_drains_done);
6846 cumulative_tsn_p1 = asoc->cumulative_tsn + 1;
6848 /* First look in the re-assembly queue */
6849 TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) {
6850 if (SCTP_TSN_GT(chk->rec.data.TSN_seq, cumulative_tsn_p1)) {
6851 /* Yep it is above cum-ack */
6853 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.TSN_seq, asoc->mapping_array_base_tsn);
6854 asoc->size_on_reasm_queue = sctp_sbspace_sub(asoc->size_on_reasm_queue, chk->send_size);
6855 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6856 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6857 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
6859 sctp_m_freem(chk->data);
6862 sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
6865 /* Ok that was fun, now we will drain all the inbound streams? */
6866 for (strmat = 0; strmat < asoc->streamincnt; strmat++) {
6867 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[strmat].inqueue, next, nctl) {
6868 if (SCTP_TSN_GT(ctl->sinfo_tsn, cumulative_tsn_p1)) {
6869 /* Yep it is above cum-ack */
6871 SCTP_CALC_TSN_TO_GAP(gap, ctl->sinfo_tsn, asoc->mapping_array_base_tsn);
6872 asoc->size_on_all_streams = sctp_sbspace_sub(asoc->size_on_all_streams, ctl->length);
6873 sctp_ucount_decr(asoc->cnt_on_all_streams);
6874 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6875 TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, ctl, next);
6877 sctp_m_freem(ctl->data);
6880 sctp_free_remote_addr(ctl->whoFrom);
6881 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
6882 SCTP_DECR_READQ_COUNT();
6887 /* We must back down to see what the new highest is */
6888 for (i = asoc->highest_tsn_inside_map; SCTP_TSN_GE(i, asoc->mapping_array_base_tsn); i--) {
6889 SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn);
6890 if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) {
6891 asoc->highest_tsn_inside_map = i;
6897 asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1;
6900 * Question, should we go through the delivery queue? The
6901 * only reason things are on here is the app not reading OR
6902 * a p-d-api up. An attacker COULD send enough in to
6903 * initiate the PD-API and then send a bunch of stuff to
6904 * other streams... these would wind up on the delivery
6905 * queue.. and then we would not get to them. But in order
6906 * to do this I then have to back-track and un-deliver
6907 * sequence numbers in streams.. el-yucko. I think for now
6908 * we will NOT look at the delivery queue and leave it to be
6909 * something to consider later. An alternative would be to
6910 * abort the P-D-API with a notification and then deliver
6911 * the data.... Or another method might be to keep track of
6912 * how many times the situation occurs and if we see a
6913 * possible attack underway just abort the association.
6916 SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt);
6919 * Now do we need to find a new
6920 * asoc->highest_tsn_inside_map?
6922 asoc->last_revoke_count = cnt;
6923 (void)SCTP_OS_TIMER_STOP(&stcb->asoc.dack_timer.timer);
6924 /* sa_ignore NO_NULL_CHK */
6925 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
6926 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED);
6929 * Another issue, in un-setting the TSN's in the mapping array we
6930 * DID NOT adjust the highest_tsn marker. This will cause one of
6931 * two things to occur. It may cause us to do extra work in checking
6932 * for our mapping array movement. More importantly it may cause us
6933 * to SACK every datagram. This may not be a bad thing though since
6934 * we will recover once we get our cum-ack above and all this stuff
6935 * we dumped recovered.
6943 * We must walk the PCB lists for ALL associations here. The system
6944 * is LOW on MBUF's and needs help. This is where reneging will
6945 * occur. We really hope this does NOT happen!
6947 VNET_ITERATOR_DECL(vnet_iter);
6948 VNET_LIST_RLOCK_NOSLEEP();
6949 VNET_FOREACH(vnet_iter) {
6950 CURVNET_SET(vnet_iter);
6951 struct sctp_inpcb *inp;
6952 struct sctp_tcb *stcb;
6954 SCTP_STAT_INCR(sctps_protocol_drain_calls);
6955 if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
6962 SCTP_INP_INFO_RLOCK();
6963 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
6964 /* For each endpoint */
6965 SCTP_INP_RLOCK(inp);
6966 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
6967 /* For each association */
6968 SCTP_TCB_LOCK(stcb);
6969 sctp_drain_mbufs(stcb);
6970 SCTP_TCB_UNLOCK(stcb);
6972 SCTP_INP_RUNLOCK(inp);
6974 SCTP_INP_INFO_RUNLOCK();
6977 VNET_LIST_RUNLOCK_NOSLEEP();
6981 * start a new iterator
6982 * iterates through all endpoints and associations based on the pcb_state
6983 * flags and asoc_state. "af" (mandatory) is executed for all matching
6984 * assocs and "ef" (optional) is executed when the iterator completes.
6985 * "inpf" (optional) is executed for each new endpoint as it is being
6986 * iterated through. inpe (optional) is called when the inp completes
6987 * its way through all the stcbs.
6990 sctp_initiate_iterator(inp_func inpf,
6994 uint32_t pcb_features,
6995 uint32_t asoc_state,
6999 struct sctp_inpcb *s_inp,
7000 uint8_t chunk_output_off)
7002 struct sctp_iterator *it = NULL;
7007 SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator),
7010 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
7013 memset(it, 0, sizeof(*it));
7014 it->function_assoc = af;
7015 it->function_inp = inpf;
7017 it->done_current_ep = 0;
7019 it->done_current_ep = 1;
7020 it->function_atend = ef;
7023 it->pcb_flags = pcb_state;
7024 it->pcb_features = pcb_features;
7025 it->asoc_state = asoc_state;
7026 it->function_inp_end = inpe;
7027 it->no_chunk_output = chunk_output_off;
7030 /* Assume lock is held here */
7032 SCTP_INP_INCR_REF(it->inp);
7033 it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP;
7035 SCTP_INP_INFO_RLOCK();
7036 it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead));
7038 SCTP_INP_INCR_REF(it->inp);
7040 SCTP_INP_INFO_RUNLOCK();
7041 it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP;
7044 SCTP_IPI_ITERATOR_WQ_LOCK();
7046 TAILQ_INSERT_TAIL(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
7047 if (sctp_it_ctl.iterator_running == 0) {
7048 sctp_wakeup_iterator();
7050 SCTP_IPI_ITERATOR_WQ_UNLOCK();
7051 /* sa_ignore MEMLEAK {memory is put on the tailq for the iterator} */