2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2008-2011, by Randall Stewart. All rights reserved.
4 * Copyright (c) 2008-2011, by Michael Tuexen. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
9 * a) Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
12 * b) Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the distribution.
16 * c) Neither the name of Cisco Systems, Inc. nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
33 /* $KAME: sctp_pcb.c,v 1.38 2005/03/06 16:04:18 itojun Exp $ */
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #include <netinet/sctp_os.h>
40 #include <netinet/sctp_var.h>
41 #include <netinet/sctp_sysctl.h>
42 #include <netinet/sctp_pcb.h>
43 #include <netinet/sctputil.h>
44 #include <netinet/sctp.h>
45 #include <netinet/sctp_header.h>
46 #include <netinet/sctp_asconf.h>
47 #include <netinet/sctp_output.h>
48 #include <netinet/sctp_timer.h>
49 #include <netinet/sctp_bsd_addr.h>
50 #include <netinet/sctp_dtrace_define.h>
51 #include <netinet/udp.h>
52 #include <sys/sched.h>
54 #include <sys/unistd.h>
57 VNET_DEFINE(struct sctp_base_info, system_base_info);
59 /* FIX: we don't handle multiple link local scopes */
60 /* "scopeless" replacement IN6_ARE_ADDR_EQUAL */
63 SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b)
65 struct sockaddr_in6 tmp_a, tmp_b;
67 memcpy(&tmp_a, a, sizeof(struct sockaddr_in6));
68 if (sa6_embedscope(&tmp_a, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
71 memcpy(&tmp_b, b, sizeof(struct sockaddr_in6));
72 if (sa6_embedscope(&tmp_b, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
75 return (IN6_ARE_ADDR_EQUAL(&tmp_a.sin6_addr, &tmp_b.sin6_addr));
81 sctp_fill_pcbinfo(struct sctp_pcbinfo *spcb)
84 * We really don't need to lock this, but I will just because it
87 SCTP_INP_INFO_RLOCK();
88 spcb->ep_count = SCTP_BASE_INFO(ipi_count_ep);
89 spcb->asoc_count = SCTP_BASE_INFO(ipi_count_asoc);
90 spcb->laddr_count = SCTP_BASE_INFO(ipi_count_laddr);
91 spcb->raddr_count = SCTP_BASE_INFO(ipi_count_raddr);
92 spcb->chk_count = SCTP_BASE_INFO(ipi_count_chunk);
93 spcb->readq_count = SCTP_BASE_INFO(ipi_count_readq);
94 spcb->stream_oque = SCTP_BASE_INFO(ipi_count_strmoq);
95 spcb->free_chunks = SCTP_BASE_INFO(ipi_free_chunks);
97 SCTP_INP_INFO_RUNLOCK();
101 * Addresses are added to VRF's (Virtual Router's). For BSD we
102 * have only the default VRF 0. We maintain a hash list of
103 * VRF's. Each VRF has its own list of sctp_ifn's. Each of
104 * these has a list of addresses. When we add a new address
105 * to a VRF we lookup the ifn/ifn_index, if the ifn does
106 * not exist we create it and add it to the list of IFN's
107 * within the VRF. Once we have the sctp_ifn, we add the
108 * address to the list. So we look something like:
111 * vrf-> ifn-> ifn -> ifn
113 * ... +--ifa-> ifa -> ifa
116 * We keep these separate lists since the SCTP subsystem will
117 * point to these from its source address selection nets structure.
118 * When an address is deleted it does not happen right away on
119 * the SCTP side, it gets scheduled. What we do when a
120 * delete happens is immediately remove the address from
121 * the master list and decrement the refcount. As our
122 * addip iterator works through and frees the src address
123 * selection pointing to the sctp_ifa, eventually the refcount
124 * will reach 0 and we will delete it. Note that it is assumed
125 * that any locking on system level ifn/ifa is done at the
126 * caller of these functions and these routines will only
127 * lock the SCTP structures as they add or delete things.
129 * Other notes on VRF concepts.
130 * - An endpoint can be in multiple VRF's
131 * - An association lives within a VRF and only one VRF.
132 * - Any incoming packet we can deduce the VRF for by
133 * looking at the mbuf/pak inbound (for BSD its VRF=0 :D)
134 * - Any downward send call or connect call must supply the
135 * VRF via ancillary data or via some sort of set default
136 * VRF socket option call (again for BSD no brainer since
137 * the VRF is always 0).
138 * - An endpoint may add multiple VRF's to it.
139 * - Listening sockets can accept associations in any
140 * of the VRF's they are in but the assoc will end up
141 * in only one VRF (gotten from the packet or connect/send).
146 sctp_allocate_vrf(int vrf_id)
148 struct sctp_vrf *vrf = NULL;
149 struct sctp_vrflist *bucket;
151 /* First allocate the VRF structure */
152 vrf = sctp_find_vrf(vrf_id);
154 /* Already allocated */
157 SCTP_MALLOC(vrf, struct sctp_vrf *, sizeof(struct sctp_vrf),
162 panic("No memory for VRF:%d", vrf_id);
167 memset(vrf, 0, sizeof(struct sctp_vrf));
168 vrf->vrf_id = vrf_id;
169 LIST_INIT(&vrf->ifnlist);
170 vrf->total_ifa_count = 0;
172 /* now also setup table ids */
173 SCTP_INIT_VRF_TABLEID(vrf);
174 /* Init the HASH of addresses */
175 vrf->vrf_addr_hash = SCTP_HASH_INIT(SCTP_VRF_ADDR_HASH_SIZE,
176 &vrf->vrf_addr_hashmark);
177 if (vrf->vrf_addr_hash == NULL) {
180 panic("No memory for VRF:%d", vrf_id);
182 SCTP_FREE(vrf, SCTP_M_VRF);
185 /* Add it to the hash table */
186 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
187 LIST_INSERT_HEAD(bucket, vrf, next_vrf);
188 atomic_add_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
194 sctp_find_ifn(void *ifn, uint32_t ifn_index)
196 struct sctp_ifn *sctp_ifnp;
197 struct sctp_ifnlist *hash_ifn_head;
200 * We assume the lock is held for the addresses if that's wrong
201 * problems could occur :-)
203 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
204 LIST_FOREACH(sctp_ifnp, hash_ifn_head, next_bucket) {
205 if (sctp_ifnp->ifn_index == ifn_index) {
208 if (sctp_ifnp->ifn_p && ifn && (sctp_ifnp->ifn_p == ifn)) {
218 sctp_find_vrf(uint32_t vrf_id)
220 struct sctp_vrflist *bucket;
221 struct sctp_vrf *liste;
223 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
224 LIST_FOREACH(liste, bucket, next_vrf) {
225 if (vrf_id == liste->vrf_id) {
233 sctp_free_vrf(struct sctp_vrf *vrf)
235 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&vrf->refcount)) {
236 if (vrf->vrf_addr_hash) {
237 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
238 vrf->vrf_addr_hash = NULL;
240 /* We zero'd the count */
241 LIST_REMOVE(vrf, next_vrf);
242 SCTP_FREE(vrf, SCTP_M_VRF);
243 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
248 sctp_free_ifn(struct sctp_ifn *sctp_ifnp)
250 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifnp->refcount)) {
251 /* We zero'd the count */
252 if (sctp_ifnp->vrf) {
253 sctp_free_vrf(sctp_ifnp->vrf);
255 SCTP_FREE(sctp_ifnp, SCTP_M_IFN);
256 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
261 sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu)
263 struct sctp_ifn *sctp_ifnp;
265 sctp_ifnp = sctp_find_ifn((void *)NULL, ifn_index);
266 if (sctp_ifnp != NULL) {
267 sctp_ifnp->ifn_mtu = mtu;
273 sctp_free_ifa(struct sctp_ifa *sctp_ifap)
275 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifap->refcount)) {
276 /* We zero'd the count */
277 if (sctp_ifap->ifn_p) {
278 sctp_free_ifn(sctp_ifap->ifn_p);
280 SCTP_FREE(sctp_ifap, SCTP_M_IFA);
281 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
286 sctp_delete_ifn(struct sctp_ifn *sctp_ifnp, int hold_addr_lock)
288 struct sctp_ifn *found;
290 found = sctp_find_ifn(sctp_ifnp->ifn_p, sctp_ifnp->ifn_index);
292 /* Not in the list.. sorry */
295 if (hold_addr_lock == 0)
296 SCTP_IPI_ADDR_WLOCK();
297 LIST_REMOVE(sctp_ifnp, next_bucket);
298 LIST_REMOVE(sctp_ifnp, next_ifn);
299 SCTP_DEREGISTER_INTERFACE(sctp_ifnp->ifn_index,
300 sctp_ifnp->registered_af);
301 if (hold_addr_lock == 0)
302 SCTP_IPI_ADDR_WUNLOCK();
303 /* Take away the reference, and possibly free it */
304 sctp_free_ifn(sctp_ifnp);
308 sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr,
309 const char *if_name, uint32_t ifn_index)
311 struct sctp_vrf *vrf;
312 struct sctp_ifa *sctp_ifap = NULL;
314 SCTP_IPI_ADDR_RLOCK();
315 vrf = sctp_find_vrf(vrf_id);
317 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
321 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
322 if (sctp_ifap == NULL) {
323 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
326 if (sctp_ifap->ifn_p == NULL) {
327 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unuseable\n");
333 len1 = strlen(if_name);
334 len2 = strlen(sctp_ifap->ifn_p->ifn_name);
336 SCTPDBG(SCTP_DEBUG_PCB4, "IFN of ifa names different length %d vs %d - ignored\n",
340 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, len1) != 0) {
341 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
342 sctp_ifap->ifn_p->ifn_name,
347 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
348 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
349 sctp_ifap->ifn_p->ifn_index, ifn_index);
354 sctp_ifap->localifa_flags &= (~SCTP_ADDR_VALID);
355 sctp_ifap->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE;
357 SCTP_IPI_ADDR_RUNLOCK();
361 sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr,
362 const char *if_name, uint32_t ifn_index)
364 struct sctp_vrf *vrf;
365 struct sctp_ifa *sctp_ifap = NULL;
367 SCTP_IPI_ADDR_RLOCK();
368 vrf = sctp_find_vrf(vrf_id);
370 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
374 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
375 if (sctp_ifap == NULL) {
376 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
379 if (sctp_ifap->ifn_p == NULL) {
380 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unuseable\n");
386 len1 = strlen(if_name);
387 len2 = strlen(sctp_ifap->ifn_p->ifn_name);
389 SCTPDBG(SCTP_DEBUG_PCB4, "IFN of ifa names different length %d vs %d - ignored\n",
393 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, len1) != 0) {
394 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
395 sctp_ifap->ifn_p->ifn_name,
400 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
401 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
402 sctp_ifap->ifn_p->ifn_index, ifn_index);
407 sctp_ifap->localifa_flags &= (~SCTP_ADDR_IFA_UNUSEABLE);
408 sctp_ifap->localifa_flags |= SCTP_ADDR_VALID;
410 SCTP_IPI_ADDR_RUNLOCK();
414 * Add an ifa to an ifn.
415 * Register the interface as necessary.
416 * NOTE: ADDR write lock MUST be held.
419 sctp_add_ifa_to_ifn(struct sctp_ifn *sctp_ifnp, struct sctp_ifa *sctp_ifap)
423 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
424 sctp_ifap->ifn_p = sctp_ifnp;
425 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
426 /* update address counts */
427 sctp_ifnp->ifa_count++;
428 ifa_af = sctp_ifap->address.sa.sa_family;
429 if (ifa_af == AF_INET)
433 if (sctp_ifnp->ifa_count == 1) {
434 /* register the new interface */
435 SCTP_REGISTER_INTERFACE(sctp_ifnp->ifn_index, ifa_af);
436 sctp_ifnp->registered_af = ifa_af;
441 * Remove an ifa from its ifn.
442 * If no more addresses exist, remove the ifn too. Otherwise, re-register
443 * the interface based on the remaining address families left.
444 * NOTE: ADDR write lock MUST be held.
447 sctp_remove_ifa_from_ifn(struct sctp_ifa *sctp_ifap)
451 LIST_REMOVE(sctp_ifap, next_ifa);
452 if (sctp_ifap->ifn_p) {
453 /* update address counts */
454 sctp_ifap->ifn_p->ifa_count--;
455 if (sctp_ifap->address.sa.sa_family == AF_INET6)
456 sctp_ifap->ifn_p->num_v6--;
457 else if (sctp_ifap->address.sa.sa_family == AF_INET)
458 sctp_ifap->ifn_p->num_v4--;
460 ifn_index = sctp_ifap->ifn_p->ifn_index;
461 if (LIST_EMPTY(&sctp_ifap->ifn_p->ifalist)) {
462 /* remove the ifn, possibly freeing it */
463 sctp_delete_ifn(sctp_ifap->ifn_p, SCTP_ADDR_LOCKED);
465 /* re-register address family type, if needed */
466 if ((sctp_ifap->ifn_p->num_v6 == 0) &&
467 (sctp_ifap->ifn_p->registered_af == AF_INET6)) {
468 SCTP_DEREGISTER_INTERFACE(ifn_index, AF_INET6);
469 SCTP_REGISTER_INTERFACE(ifn_index, AF_INET);
470 sctp_ifap->ifn_p->registered_af = AF_INET;
471 } else if ((sctp_ifap->ifn_p->num_v4 == 0) &&
472 (sctp_ifap->ifn_p->registered_af == AF_INET)) {
473 SCTP_DEREGISTER_INTERFACE(ifn_index, AF_INET);
474 SCTP_REGISTER_INTERFACE(ifn_index, AF_INET6);
475 sctp_ifap->ifn_p->registered_af = AF_INET6;
477 /* free the ifn refcount */
478 sctp_free_ifn(sctp_ifap->ifn_p);
480 sctp_ifap->ifn_p = NULL;
485 sctp_add_addr_to_vrf(uint32_t vrf_id, void *ifn, uint32_t ifn_index,
486 uint32_t ifn_type, const char *if_name, void *ifa,
487 struct sockaddr *addr, uint32_t ifa_flags,
490 struct sctp_vrf *vrf;
491 struct sctp_ifn *sctp_ifnp = NULL;
492 struct sctp_ifa *sctp_ifap = NULL;
493 struct sctp_ifalist *hash_addr_head;
494 struct sctp_ifnlist *hash_ifn_head;
495 uint32_t hash_of_addr;
499 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: adding address: ", vrf_id);
500 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
502 SCTP_IPI_ADDR_WLOCK();
503 sctp_ifnp = sctp_find_ifn(ifn, ifn_index);
505 vrf = sctp_ifnp->vrf;
507 vrf = sctp_find_vrf(vrf_id);
509 vrf = sctp_allocate_vrf(vrf_id);
511 SCTP_IPI_ADDR_WUNLOCK();
516 if (sctp_ifnp == NULL) {
518 * build one and add it, can't hold lock until after malloc
521 SCTP_IPI_ADDR_WUNLOCK();
522 SCTP_MALLOC(sctp_ifnp, struct sctp_ifn *,
523 sizeof(struct sctp_ifn), SCTP_M_IFN);
524 if (sctp_ifnp == NULL) {
526 panic("No memory for IFN");
530 memset(sctp_ifnp, 0, sizeof(struct sctp_ifn));
531 sctp_ifnp->ifn_index = ifn_index;
532 sctp_ifnp->ifn_p = ifn;
533 sctp_ifnp->ifn_type = ifn_type;
534 sctp_ifnp->refcount = 0;
535 sctp_ifnp->vrf = vrf;
536 atomic_add_int(&vrf->refcount, 1);
537 sctp_ifnp->ifn_mtu = SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, addr->sa_family);
538 if (if_name != NULL) {
539 memcpy(sctp_ifnp->ifn_name, if_name, SCTP_IFNAMSIZ);
541 memcpy(sctp_ifnp->ifn_name, "unknown", min(7, SCTP_IFNAMSIZ));
543 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
544 LIST_INIT(&sctp_ifnp->ifalist);
545 SCTP_IPI_ADDR_WLOCK();
546 LIST_INSERT_HEAD(hash_ifn_head, sctp_ifnp, next_bucket);
547 LIST_INSERT_HEAD(&vrf->ifnlist, sctp_ifnp, next_ifn);
548 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
551 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
553 /* Hmm, it already exists? */
554 if ((sctp_ifap->ifn_p) &&
555 (sctp_ifap->ifn_p->ifn_index == ifn_index)) {
556 SCTPDBG(SCTP_DEBUG_PCB4, "Using existing ifn %s (0x%x) for ifa %p\n",
557 sctp_ifap->ifn_p->ifn_name, ifn_index,
560 /* Remove the created one that we don't want */
561 sctp_delete_ifn(sctp_ifnp, SCTP_ADDR_LOCKED);
563 if (sctp_ifap->localifa_flags & SCTP_BEING_DELETED) {
564 /* easy to solve, just switch back to active */
565 SCTPDBG(SCTP_DEBUG_PCB4, "Clearing deleted ifa flag\n");
566 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
567 sctp_ifap->ifn_p = sctp_ifnp;
568 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
571 SCTP_IPI_ADDR_WUNLOCK();
574 if (sctp_ifap->ifn_p) {
576 * The last IFN gets the address, remove the
579 SCTPDBG(SCTP_DEBUG_PCB4, "Moving ifa %p from %s (0x%x) to %s (0x%x)\n",
580 sctp_ifap, sctp_ifap->ifn_p->ifn_name,
581 sctp_ifap->ifn_p->ifn_index, if_name,
583 /* remove the address from the old ifn */
584 sctp_remove_ifa_from_ifn(sctp_ifap);
585 /* move the address over to the new ifn */
586 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
587 goto exit_stage_left;
589 /* repair ifnp which was NULL ? */
590 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
591 SCTPDBG(SCTP_DEBUG_PCB4, "Repairing ifn %p for ifa %p\n",
592 sctp_ifnp, sctp_ifap);
593 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
595 goto exit_stage_left;
598 SCTP_IPI_ADDR_WUNLOCK();
599 SCTP_MALLOC(sctp_ifap, struct sctp_ifa *, sizeof(struct sctp_ifa), SCTP_M_IFA);
600 if (sctp_ifap == NULL) {
602 panic("No memory for IFA");
606 memset(sctp_ifap, 0, sizeof(struct sctp_ifa));
607 sctp_ifap->ifn_p = sctp_ifnp;
608 atomic_add_int(&sctp_ifnp->refcount, 1);
609 sctp_ifap->vrf_id = vrf_id;
610 sctp_ifap->ifa = ifa;
611 memcpy(&sctp_ifap->address, addr, addr->sa_len);
612 sctp_ifap->localifa_flags = SCTP_ADDR_VALID | SCTP_ADDR_DEFER_USE;
613 sctp_ifap->flags = ifa_flags;
615 switch (sctp_ifap->address.sa.sa_family) {
618 struct sockaddr_in *sin;
620 sin = (struct sockaddr_in *)&sctp_ifap->address.sin;
621 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
622 (IN4_ISLOOPBACK_ADDRESS(&sin->sin_addr))) {
623 sctp_ifap->src_is_loop = 1;
625 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
626 sctp_ifap->src_is_priv = 1;
630 new_ifn_af = AF_INET;
636 /* ok to use deprecated addresses? */
637 struct sockaddr_in6 *sin6;
639 sin6 = (struct sockaddr_in6 *)&sctp_ifap->address.sin6;
640 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
641 (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))) {
642 sctp_ifap->src_is_loop = 1;
644 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
645 sctp_ifap->src_is_priv = 1;
649 new_ifn_af = AF_INET6;
657 hash_of_addr = sctp_get_ifa_hash_val(&sctp_ifap->address.sa);
659 if ((sctp_ifap->src_is_priv == 0) &&
660 (sctp_ifap->src_is_loop == 0)) {
661 sctp_ifap->src_is_glob = 1;
663 SCTP_IPI_ADDR_WLOCK();
664 hash_addr_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
665 LIST_INSERT_HEAD(hash_addr_head, sctp_ifap, next_bucket);
666 sctp_ifap->refcount = 1;
667 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
668 sctp_ifnp->ifa_count++;
669 vrf->total_ifa_count++;
670 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
672 SCTP_REGISTER_INTERFACE(ifn_index, new_ifn_af);
673 sctp_ifnp->registered_af = new_ifn_af;
675 SCTP_IPI_ADDR_WUNLOCK();
678 * Bump up the refcount so that when the timer completes it
679 * will drop back down.
681 struct sctp_laddr *wi;
683 atomic_add_int(&sctp_ifap->refcount, 1);
684 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
687 * Gak, what can we do? We have lost an address
688 * change can you say HOSED?
690 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
691 /* Opps, must decrement the count */
692 sctp_del_addr_from_vrf(vrf_id, addr, ifn_index,
696 SCTP_INCR_LADDR_COUNT();
697 bzero(wi, sizeof(*wi));
698 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
700 wi->action = SCTP_ADD_IP_ADDRESS;
703 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
704 SCTP_WQ_ADDR_UNLOCK();
706 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
707 (struct sctp_inpcb *)NULL,
708 (struct sctp_tcb *)NULL,
709 (struct sctp_nets *)NULL);
711 /* it's ready for use */
712 sctp_ifap->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
718 sctp_del_addr_from_vrf(uint32_t vrf_id, struct sockaddr *addr,
719 uint32_t ifn_index, const char *if_name)
721 struct sctp_vrf *vrf;
722 struct sctp_ifa *sctp_ifap = NULL;
724 SCTP_IPI_ADDR_WLOCK();
725 vrf = sctp_find_vrf(vrf_id);
727 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
731 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: deleting address:", vrf_id);
732 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
734 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
736 /* Validate the delete */
737 if (sctp_ifap->ifn_p) {
741 * The name has priority over the ifn_index
742 * if its given. We do this especially for
743 * panda who might recycle indexes fast.
748 len1 = min(SCTP_IFNAMSIZ, strlen(if_name));
749 len2 = min(SCTP_IFNAMSIZ, strlen(sctp_ifap->ifn_p->ifn_name));
750 if (len1 && len2 && (len1 == len2)) {
751 /* we can compare them */
752 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, len1) == 0) {
754 * They match its a correct
762 /* last ditch check ifn_index */
763 if (ifn_index == sctp_ifap->ifn_p->ifn_index) {
768 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s does not match addresses\n",
769 ifn_index, ((if_name == NULL) ? "NULL" : if_name));
770 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s - ignoring delete\n",
771 sctp_ifap->ifn_p->ifn_index, sctp_ifap->ifn_p->ifn_name);
772 SCTP_IPI_ADDR_WUNLOCK();
776 SCTPDBG(SCTP_DEBUG_PCB4, "Deleting ifa %p\n", sctp_ifap);
777 sctp_ifap->localifa_flags &= SCTP_ADDR_VALID;
778 sctp_ifap->localifa_flags |= SCTP_BEING_DELETED;
779 vrf->total_ifa_count--;
780 LIST_REMOVE(sctp_ifap, next_bucket);
781 sctp_remove_ifa_from_ifn(sctp_ifap);
785 SCTPDBG(SCTP_DEBUG_PCB4, "Del Addr-ifn:%d Could not find address:",
787 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
792 SCTP_IPI_ADDR_WUNLOCK();
794 struct sctp_laddr *wi;
796 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
799 * Gak, what can we do? We have lost an address
800 * change can you say HOSED?
802 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
804 /* Oops, must decrement the count */
805 sctp_free_ifa(sctp_ifap);
808 SCTP_INCR_LADDR_COUNT();
809 bzero(wi, sizeof(*wi));
810 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
812 wi->action = SCTP_DEL_IP_ADDRESS;
815 * Should this really be a tailq? As it is we will process
816 * the newest first :-0
818 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
819 SCTP_WQ_ADDR_UNLOCK();
821 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
822 (struct sctp_inpcb *)NULL,
823 (struct sctp_tcb *)NULL,
824 (struct sctp_nets *)NULL);
830 static struct sctp_tcb *
831 sctp_tcb_special_locate(struct sctp_inpcb **inp_p, struct sockaddr *from,
832 struct sockaddr *to, struct sctp_nets **netp, uint32_t vrf_id)
834 /**** ASSUMES THE CALLER holds the INP_INFO_RLOCK */
836 * If we support the TCP model, then we must now dig through to see
837 * if we can find our endpoint in the list of tcp ep's.
839 uint16_t lport, rport;
840 struct sctppcbhead *ephead;
841 struct sctp_inpcb *inp;
842 struct sctp_laddr *laddr;
843 struct sctp_tcb *stcb;
844 struct sctp_nets *net;
846 if ((to == NULL) || (from == NULL)) {
849 if (to->sa_family == AF_INET && from->sa_family == AF_INET) {
850 lport = ((struct sockaddr_in *)to)->sin_port;
851 rport = ((struct sockaddr_in *)from)->sin_port;
852 } else if (to->sa_family == AF_INET6 && from->sa_family == AF_INET6) {
853 lport = ((struct sockaddr_in6 *)to)->sin6_port;
854 rport = ((struct sockaddr_in6 *)from)->sin6_port;
858 ephead = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
860 * Ok now for each of the guys in this bucket we must look and see:
861 * - Does the remote port match. - Does there single association's
862 * addresses match this address (to). If so we update p_ep to point
863 * to this ep and return the tcb from it.
865 LIST_FOREACH(inp, ephead, sctp_hash) {
867 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
868 SCTP_INP_RUNLOCK(inp);
871 if (lport != inp->sctp_lport) {
872 SCTP_INP_RUNLOCK(inp);
875 if (inp->def_vrf_id != vrf_id) {
876 SCTP_INP_RUNLOCK(inp);
879 /* check to see if the ep has one of the addresses */
880 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
881 /* We are NOT bound all, so look further */
884 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
886 if (laddr->ifa == NULL) {
887 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n", __FUNCTION__);
890 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
891 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
894 if (laddr->ifa->address.sa.sa_family ==
896 /* see if it matches */
897 struct sockaddr_in *intf_addr, *sin;
899 intf_addr = &laddr->ifa->address.sin;
900 sin = (struct sockaddr_in *)to;
901 if (from->sa_family == AF_INET) {
902 if (sin->sin_addr.s_addr ==
903 intf_addr->sin_addr.s_addr) {
909 if (from->sa_family == AF_INET6) {
910 struct sockaddr_in6 *intf_addr6;
911 struct sockaddr_in6 *sin6;
913 sin6 = (struct sockaddr_in6 *)
915 intf_addr6 = &laddr->ifa->address.sin6;
917 if (SCTP6_ARE_ADDR_EQUAL(sin6,
927 /* This endpoint does not have this address */
928 SCTP_INP_RUNLOCK(inp);
933 * Ok if we hit here the ep has the address, does it hold
937 stcb = LIST_FIRST(&inp->sctp_asoc_list);
939 SCTP_INP_RUNLOCK(inp);
943 if (stcb->rport != rport) {
944 /* remote port does not match. */
945 SCTP_TCB_UNLOCK(stcb);
946 SCTP_INP_RUNLOCK(inp);
949 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
950 SCTP_TCB_UNLOCK(stcb);
951 SCTP_INP_RUNLOCK(inp);
954 /* Does this TCB have a matching address? */
955 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
957 if (net->ro._l_addr.sa.sa_family != from->sa_family) {
958 /* not the same family, can't be a match */
961 switch (from->sa_family) {
964 struct sockaddr_in *sin, *rsin;
966 sin = (struct sockaddr_in *)&net->ro._l_addr;
967 rsin = (struct sockaddr_in *)from;
968 if (sin->sin_addr.s_addr ==
969 rsin->sin_addr.s_addr) {
975 * Update the endpoint
979 SCTP_INP_RUNLOCK(inp);
987 struct sockaddr_in6 *sin6, *rsin6;
989 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
990 rsin6 = (struct sockaddr_in6 *)from;
991 if (SCTP6_ARE_ADDR_EQUAL(sin6,
998 * Update the endpoint
1002 SCTP_INP_RUNLOCK(inp);
1013 SCTP_TCB_UNLOCK(stcb);
1014 SCTP_INP_RUNLOCK(inp);
1020 sctp_does_stcb_own_this_addr(struct sctp_tcb *stcb, struct sockaddr *to)
1022 int loopback_scope, ipv4_local_scope, local_scope, site_scope;
1023 int ipv4_addr_legal, ipv6_addr_legal;
1024 struct sctp_vrf *vrf;
1025 struct sctp_ifn *sctp_ifn;
1026 struct sctp_ifa *sctp_ifa;
1028 loopback_scope = stcb->asoc.loopback_scope;
1029 ipv4_local_scope = stcb->asoc.ipv4_local_scope;
1030 local_scope = stcb->asoc.local_scope;
1031 site_scope = stcb->asoc.site_scope;
1032 ipv4_addr_legal = ipv6_addr_legal = 0;
1033 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1034 ipv6_addr_legal = 1;
1035 if (SCTP_IPV6_V6ONLY(stcb->sctp_ep) == 0) {
1036 ipv4_addr_legal = 1;
1039 ipv4_addr_legal = 1;
1042 SCTP_IPI_ADDR_RLOCK();
1043 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
1045 /* no vrf, no addresses */
1046 SCTP_IPI_ADDR_RUNLOCK();
1049 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1050 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
1051 if ((loopback_scope == 0) &&
1052 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
1055 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
1056 if (sctp_is_addr_restricted(stcb, sctp_ifa))
1058 switch (sctp_ifa->address.sa.sa_family) {
1061 if (ipv4_addr_legal) {
1062 struct sockaddr_in *sin,
1065 sin = &sctp_ifa->address.sin;
1066 rsin = (struct sockaddr_in *)to;
1067 if ((ipv4_local_scope == 0) &&
1068 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
1071 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
1072 SCTP_IPI_ADDR_RUNLOCK();
1080 if (ipv6_addr_legal) {
1081 struct sockaddr_in6 *sin6,
1084 sin6 = &sctp_ifa->address.sin6;
1085 rsin6 = (struct sockaddr_in6 *)to;
1086 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
1087 if (local_scope == 0)
1089 if (sin6->sin6_scope_id == 0) {
1090 if (sa6_recoverscope(sin6) != 0)
1094 if ((site_scope == 0) &&
1095 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
1098 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
1099 SCTP_IPI_ADDR_RUNLOCK();
1112 struct sctp_laddr *laddr;
1114 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
1115 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
1118 if (laddr->ifa->address.sa.sa_family != to->sa_family) {
1121 switch (to->sa_family) {
1125 struct sockaddr_in *sin, *rsin;
1127 sin = (struct sockaddr_in *)&laddr->ifa->address.sin;
1128 rsin = (struct sockaddr_in *)to;
1129 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
1130 SCTP_IPI_ADDR_RUNLOCK();
1139 struct sockaddr_in6 *sin6, *rsin6;
1141 sin6 = (struct sockaddr_in6 *)&laddr->ifa->address.sin6;
1142 rsin6 = (struct sockaddr_in6 *)to;
1143 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
1144 SCTP_IPI_ADDR_RUNLOCK();
1158 SCTP_IPI_ADDR_RUNLOCK();
1165 * 1) If I return a NULL you must decrement any INP ref cnt. 2) If I find an
1166 * stcb, both will be locked (locked_tcb and stcb) but decrement will be done
1167 * (if locked == NULL). 3) Decrement happens on return ONLY if locked ==
1172 sctp_findassociation_ep_addr(struct sctp_inpcb **inp_p, struct sockaddr *remote,
1173 struct sctp_nets **netp, struct sockaddr *local, struct sctp_tcb *locked_tcb)
1175 struct sctpasochead *head;
1176 struct sctp_inpcb *inp;
1177 struct sctp_tcb *stcb = NULL;
1178 struct sctp_nets *net;
1182 if (remote->sa_family == AF_INET) {
1183 rport = (((struct sockaddr_in *)remote)->sin_port);
1184 } else if (remote->sa_family == AF_INET6) {
1185 rport = (((struct sockaddr_in6 *)remote)->sin6_port);
1191 * UN-lock so we can do proper locking here this occurs when
1192 * called from load_addresses_from_init.
1194 atomic_add_int(&locked_tcb->asoc.refcnt, 1);
1195 SCTP_TCB_UNLOCK(locked_tcb);
1197 SCTP_INP_INFO_RLOCK();
1198 if (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
1200 * Now either this guy is our listener or it's the
1201 * connector. If it is the one that issued the connect, then
1202 * it's only chance is to be the first TCB in the list. If
1203 * it is the acceptor, then do the special_lookup to hash
1204 * and find the real inp.
1206 if ((inp->sctp_socket) && (inp->sctp_socket->so_qlimit)) {
1207 /* to is peer addr, from is my addr */
1208 stcb = sctp_tcb_special_locate(inp_p, remote, local,
1209 netp, inp->def_vrf_id);
1210 if ((stcb != NULL) && (locked_tcb == NULL)) {
1211 /* we have a locked tcb, lower refcount */
1212 SCTP_INP_DECR_REF(inp);
1214 if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
1215 SCTP_INP_RLOCK(locked_tcb->sctp_ep);
1216 SCTP_TCB_LOCK(locked_tcb);
1217 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1218 SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
1220 SCTP_INP_INFO_RUNLOCK();
1223 SCTP_INP_WLOCK(inp);
1224 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1227 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1231 SCTP_TCB_LOCK(stcb);
1233 if (stcb->rport != rport) {
1234 /* remote port does not match. */
1235 SCTP_TCB_UNLOCK(stcb);
1238 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1239 SCTP_TCB_UNLOCK(stcb);
1242 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1243 SCTP_TCB_UNLOCK(stcb);
1246 /* now look at the list of remote addresses */
1247 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1249 if (net == (TAILQ_NEXT(net, sctp_next))) {
1250 panic("Corrupt net list");
1253 if (net->ro._l_addr.sa.sa_family !=
1254 remote->sa_family) {
1255 /* not the same family */
1258 switch (remote->sa_family) {
1261 struct sockaddr_in *sin,
1264 sin = (struct sockaddr_in *)
1266 rsin = (struct sockaddr_in *)remote;
1267 if (sin->sin_addr.s_addr ==
1268 rsin->sin_addr.s_addr) {
1273 if (locked_tcb == NULL) {
1274 SCTP_INP_DECR_REF(inp);
1275 } else if (locked_tcb != stcb) {
1276 SCTP_TCB_LOCK(locked_tcb);
1279 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1281 SCTP_INP_WUNLOCK(inp);
1282 SCTP_INP_INFO_RUNLOCK();
1290 struct sockaddr_in6 *sin6,
1293 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1294 rsin6 = (struct sockaddr_in6 *)remote;
1295 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1301 if (locked_tcb == NULL) {
1302 SCTP_INP_DECR_REF(inp);
1303 } else if (locked_tcb != stcb) {
1304 SCTP_TCB_LOCK(locked_tcb);
1307 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1309 SCTP_INP_WUNLOCK(inp);
1310 SCTP_INP_INFO_RUNLOCK();
1321 SCTP_TCB_UNLOCK(stcb);
1324 SCTP_INP_WLOCK(inp);
1325 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1328 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport,
1329 inp->sctp_hashmark)];
1333 LIST_FOREACH(stcb, head, sctp_tcbhash) {
1334 if (stcb->rport != rport) {
1335 /* remote port does not match */
1338 SCTP_TCB_LOCK(stcb);
1339 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1340 SCTP_TCB_UNLOCK(stcb);
1343 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1344 SCTP_TCB_UNLOCK(stcb);
1347 /* now look at the list of remote addresses */
1348 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1350 if (net == (TAILQ_NEXT(net, sctp_next))) {
1351 panic("Corrupt net list");
1354 if (net->ro._l_addr.sa.sa_family !=
1355 remote->sa_family) {
1356 /* not the same family */
1359 switch (remote->sa_family) {
1362 struct sockaddr_in *sin,
1365 sin = (struct sockaddr_in *)
1367 rsin = (struct sockaddr_in *)remote;
1368 if (sin->sin_addr.s_addr ==
1369 rsin->sin_addr.s_addr) {
1374 if (locked_tcb == NULL) {
1375 SCTP_INP_DECR_REF(inp);
1376 } else if (locked_tcb != stcb) {
1377 SCTP_TCB_LOCK(locked_tcb);
1380 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1382 SCTP_INP_WUNLOCK(inp);
1383 SCTP_INP_INFO_RUNLOCK();
1391 struct sockaddr_in6 *sin6,
1394 sin6 = (struct sockaddr_in6 *)
1396 rsin6 = (struct sockaddr_in6 *)remote;
1397 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1403 if (locked_tcb == NULL) {
1404 SCTP_INP_DECR_REF(inp);
1405 } else if (locked_tcb != stcb) {
1406 SCTP_TCB_LOCK(locked_tcb);
1409 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1411 SCTP_INP_WUNLOCK(inp);
1412 SCTP_INP_INFO_RUNLOCK();
1423 SCTP_TCB_UNLOCK(stcb);
1427 /* clean up for returning null */
1429 SCTP_TCB_LOCK(locked_tcb);
1430 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1432 SCTP_INP_WUNLOCK(inp);
1433 SCTP_INP_INFO_RUNLOCK();
1439 * Find an association for a specific endpoint using the association id given
1440 * out in the COMM_UP notification
1444 sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1447 * Use my the assoc_id to find a endpoint
1449 struct sctpasochead *head;
1450 struct sctp_tcb *stcb;
1454 SCTP_PRINTF("TSNH ep_associd\n");
1457 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1458 SCTP_PRINTF("TSNH ep_associd0\n");
1461 id = (uint32_t) asoc_id;
1462 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
1464 /* invalid id TSNH */
1465 SCTP_PRINTF("TSNH ep_associd1\n");
1468 LIST_FOREACH(stcb, head, sctp_tcbasocidhash) {
1469 if (stcb->asoc.assoc_id == id) {
1470 if (inp != stcb->sctp_ep) {
1472 * some other guy has the same id active (id
1475 SCTP_PRINTF("TSNH ep_associd2\n");
1478 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1482 SCTP_TCB_LOCK(stcb);
1492 sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1494 struct sctp_tcb *stcb;
1496 SCTP_INP_RLOCK(inp);
1497 stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
1498 SCTP_INP_RUNLOCK(inp);
1503 static struct sctp_inpcb *
1504 sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head,
1505 uint16_t lport, uint32_t vrf_id)
1507 struct sctp_inpcb *inp;
1508 struct sockaddr_in *sin;
1511 struct sockaddr_in6 *sin6;
1514 struct sctp_laddr *laddr;
1517 struct sockaddr_in6 *intf_addr6;
1524 * Endpoint probe expects that the INP_INFO is locked.
1530 switch (nam->sa_family) {
1532 sin = (struct sockaddr_in *)nam;
1536 sin6 = (struct sockaddr_in6 *)nam;
1540 /* unsupported family */
1547 LIST_FOREACH(inp, head, sctp_hash) {
1548 SCTP_INP_RLOCK(inp);
1549 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1550 SCTP_INP_RUNLOCK(inp);
1553 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) &&
1554 (inp->sctp_lport == lport)) {
1556 if ((nam->sa_family == AF_INET) &&
1557 (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1558 SCTP_IPV6_V6ONLY(inp)) {
1559 /* IPv4 on a IPv6 socket with ONLY IPv6 set */
1560 SCTP_INP_RUNLOCK(inp);
1563 /* A V6 address and the endpoint is NOT bound V6 */
1564 if (nam->sa_family == AF_INET6 &&
1565 (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
1566 SCTP_INP_RUNLOCK(inp);
1569 /* does a VRF id match? */
1571 if (inp->def_vrf_id == vrf_id)
1574 SCTP_INP_RUNLOCK(inp);
1579 SCTP_INP_RUNLOCK(inp);
1581 if ((nam->sa_family == AF_INET) &&
1582 (sin->sin_addr.s_addr == INADDR_ANY)) {
1583 /* Can't hunt for one that has no address specified */
1587 if ((nam->sa_family == AF_INET6) &&
1588 (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))) {
1589 /* Can't hunt for one that has no address specified */
1594 * ok, not bound to all so see if we can find a EP bound to this
1597 LIST_FOREACH(inp, head, sctp_hash) {
1598 SCTP_INP_RLOCK(inp);
1599 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1600 SCTP_INP_RUNLOCK(inp);
1603 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
1604 SCTP_INP_RUNLOCK(inp);
1608 * Ok this could be a likely candidate, look at all of its
1611 if (inp->sctp_lport != lport) {
1612 SCTP_INP_RUNLOCK(inp);
1615 /* does a VRF id match? */
1617 if (inp->def_vrf_id == vrf_id)
1621 SCTP_INP_RUNLOCK(inp);
1624 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1625 if (laddr->ifa == NULL) {
1626 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
1630 SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ",
1632 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1633 SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n");
1636 if (laddr->ifa->address.sa.sa_family == nam->sa_family) {
1637 /* possible, see if it matches */
1638 struct sockaddr_in *intf_addr;
1640 intf_addr = &laddr->ifa->address.sin;
1641 switch (nam->sa_family) {
1643 if (sin->sin_addr.s_addr ==
1644 intf_addr->sin_addr.s_addr) {
1645 SCTP_INP_RUNLOCK(inp);
1651 intf_addr6 = &laddr->ifa->address.sin6;
1652 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1654 SCTP_INP_RUNLOCK(inp);
1662 SCTP_INP_RUNLOCK(inp);
1668 static struct sctp_inpcb *
1669 sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
1671 struct sctppcbhead *head;
1672 struct sctp_inpcb *t_inp;
1675 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1676 SCTP_BASE_INFO(hashmark))];
1677 LIST_FOREACH(t_inp, head, sctp_hash) {
1678 if (t_inp->sctp_lport != lport) {
1681 /* is it in the VRF in question */
1683 if (t_inp->def_vrf_id == vrf_id)
1688 /* This one is in use. */
1689 /* check the v6/v4 binding issue */
1690 if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1691 SCTP_IPV6_V6ONLY(t_inp)) {
1692 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1693 /* collision in V6 space */
1696 /* inp is BOUND_V4 no conflict */
1699 } else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1700 /* t_inp is bound v4 and v6, conflict always */
1703 /* t_inp is bound only V4 */
1704 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1705 SCTP_IPV6_V6ONLY(inp)) {
1709 /* else fall through to conflict */
1718 sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
1720 /* For 1-2-1 with port reuse */
1721 struct sctppcbhead *head;
1722 struct sctp_inpcb *tinp;
1724 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
1725 /* only works with port reuse on */
1728 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) {
1731 SCTP_INP_RUNLOCK(inp);
1732 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport,
1733 SCTP_BASE_INFO(hashmark))];
1734 /* Kick out all non-listeners to the TCP hash */
1735 LIST_FOREACH(tinp, head, sctp_hash) {
1736 if (tinp->sctp_lport != inp->sctp_lport) {
1739 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1742 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
1745 if (tinp->sctp_socket->so_qlimit) {
1748 SCTP_INP_WLOCK(tinp);
1749 LIST_REMOVE(tinp, sctp_hash);
1750 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))];
1751 tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
1752 LIST_INSERT_HEAD(head, tinp, sctp_hash);
1753 SCTP_INP_WUNLOCK(tinp);
1755 SCTP_INP_WLOCK(inp);
1756 /* Pull from where he was */
1757 LIST_REMOVE(inp, sctp_hash);
1758 inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL;
1759 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))];
1760 LIST_INSERT_HEAD(head, inp, sctp_hash);
1761 SCTP_INP_WUNLOCK(inp);
1762 SCTP_INP_RLOCK(inp);
1768 sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock,
1772 * First we check the hash table to see if someone has this port
1773 * bound with just the port.
1775 struct sctp_inpcb *inp;
1776 struct sctppcbhead *head;
1777 struct sockaddr_in *sin;
1778 struct sockaddr_in6 *sin6;
1782 if (nam->sa_family == AF_INET) {
1783 sin = (struct sockaddr_in *)nam;
1784 lport = ((struct sockaddr_in *)nam)->sin_port;
1785 } else if (nam->sa_family == AF_INET6) {
1786 sin6 = (struct sockaddr_in6 *)nam;
1787 lport = ((struct sockaddr_in6 *)nam)->sin6_port;
1789 /* unsupported family */
1793 * I could cheat here and just cast to one of the types but we will
1794 * do it right. It also provides the check against an Unsupported
1797 /* Find the head of the ALLADDR chain */
1798 if (have_lock == 0) {
1799 SCTP_INP_INFO_RLOCK();
1801 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1802 SCTP_BASE_INFO(hashmark))];
1803 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1806 * If the TCP model exists it could be that the main listening
1807 * endpoint is gone but there still exists a connected socket for
1808 * this guy. If so we can return the first one that we find. This
1809 * may NOT be the correct one so the caller should be wary on the
1810 * returned INP. Currently the only caller that sets find_tcp_pool
1811 * is in bindx where we are verifying that a user CAN bind the
1812 * address. He either has bound it already, or someone else has, or
1813 * its open to bind, so this is good enough.
1815 if (inp == NULL && find_tcp_pool) {
1816 for (i = 0; i < SCTP_BASE_INFO(hashtcpmark) + 1; i++) {
1817 head = &SCTP_BASE_INFO(sctp_tcpephash)[i];
1818 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1825 SCTP_INP_INCR_REF(inp);
1827 if (have_lock == 0) {
1828 SCTP_INP_INFO_RUNLOCK();
1834 * Find an association for an endpoint with the pointer to whom you want to
1835 * send to and the endpoint pointer. The address can be IPv4 or IPv6. We may
1836 * need to change the *to to some other struct like a mbuf...
1839 sctp_findassociation_addr_sa(struct sockaddr *to, struct sockaddr *from,
1840 struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool,
1843 struct sctp_inpcb *inp = NULL;
1844 struct sctp_tcb *retval;
1846 SCTP_INP_INFO_RLOCK();
1847 if (find_tcp_pool) {
1848 if (inp_p != NULL) {
1849 retval = sctp_tcb_special_locate(inp_p, from, to, netp,
1852 retval = sctp_tcb_special_locate(&inp, from, to, netp,
1855 if (retval != NULL) {
1856 SCTP_INP_INFO_RUNLOCK();
1860 inp = sctp_pcb_findep(to, 0, 1, vrf_id);
1861 if (inp_p != NULL) {
1864 SCTP_INP_INFO_RUNLOCK();
1870 * ok, we have an endpoint, now lets find the assoc for it (if any)
1871 * we now place the source address or from in the to of the find
1872 * endpoint call. Since in reality this chain is used from the
1873 * inbound packet side.
1875 if (inp_p != NULL) {
1876 retval = sctp_findassociation_ep_addr(inp_p, from, netp, to,
1879 retval = sctp_findassociation_ep_addr(&inp, from, netp, to,
1887 * This routine will grub through the mbuf that is a INIT or INIT-ACK and
1888 * find all addresses that the sender has specified in any address list. Each
1889 * address will be used to lookup the TCB and see if one exits.
1891 static struct sctp_tcb *
1892 sctp_findassociation_special_addr(struct mbuf *m, int iphlen, int offset,
1893 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp,
1894 struct sockaddr *dest)
1896 struct sockaddr_in sin4;
1897 struct sockaddr_in6 sin6;
1898 struct sctp_paramhdr *phdr, parm_buf;
1899 struct sctp_tcb *retval;
1900 uint32_t ptype, plen;
1902 memset(&sin4, 0, sizeof(sin4));
1903 memset(&sin6, 0, sizeof(sin6));
1904 sin4.sin_len = sizeof(sin4);
1905 sin4.sin_family = AF_INET;
1906 sin4.sin_port = sh->src_port;
1907 sin6.sin6_len = sizeof(sin6);
1908 sin6.sin6_family = AF_INET6;
1909 sin6.sin6_port = sh->src_port;
1912 offset += sizeof(struct sctp_init_chunk);
1914 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
1915 while (phdr != NULL) {
1916 /* now we must see if we want the parameter */
1917 ptype = ntohs(phdr->param_type);
1918 plen = ntohs(phdr->param_length);
1922 if (ptype == SCTP_IPV4_ADDRESS &&
1923 plen == sizeof(struct sctp_ipv4addr_param)) {
1924 /* Get the rest of the address */
1925 struct sctp_ipv4addr_param ip4_parm, *p4;
1927 phdr = sctp_get_next_param(m, offset,
1928 (struct sctp_paramhdr *)&ip4_parm, min(plen, sizeof(ip4_parm)));
1932 p4 = (struct sctp_ipv4addr_param *)phdr;
1933 memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr));
1935 retval = sctp_findassociation_ep_addr(inp_p,
1936 (struct sockaddr *)&sin4, netp, dest, NULL);
1937 if (retval != NULL) {
1940 } else if (ptype == SCTP_IPV6_ADDRESS &&
1941 plen == sizeof(struct sctp_ipv6addr_param)) {
1942 /* Get the rest of the address */
1943 struct sctp_ipv6addr_param ip6_parm, *p6;
1945 phdr = sctp_get_next_param(m, offset,
1946 (struct sctp_paramhdr *)&ip6_parm, min(plen, sizeof(ip6_parm)));
1950 p6 = (struct sctp_ipv6addr_param *)phdr;
1951 memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr));
1953 retval = sctp_findassociation_ep_addr(inp_p,
1954 (struct sockaddr *)&sin6, netp, dest, NULL);
1955 if (retval != NULL) {
1959 offset += SCTP_SIZE32(plen);
1960 phdr = sctp_get_next_param(m, offset, &parm_buf,
1966 static struct sctp_tcb *
1967 sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag,
1968 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport,
1969 uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
1972 * Use my vtag to hash. If we find it we then verify the source addr
1973 * is in the assoc. If all goes well we save a bit on rec of a
1976 struct sctpasochead *head;
1977 struct sctp_nets *net;
1978 struct sctp_tcb *stcb;
1982 SCTP_INP_INFO_RLOCK();
1983 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag,
1984 SCTP_BASE_INFO(hashasocmark))];
1987 SCTP_INP_INFO_RUNLOCK();
1990 LIST_FOREACH(stcb, head, sctp_asocs) {
1991 SCTP_INP_RLOCK(stcb->sctp_ep);
1992 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1993 SCTP_INP_RUNLOCK(stcb->sctp_ep);
1996 SCTP_TCB_LOCK(stcb);
1997 SCTP_INP_RUNLOCK(stcb->sctp_ep);
1998 if (stcb->asoc.my_vtag == vtag) {
2000 if (stcb->rport != rport) {
2001 SCTP_TCB_UNLOCK(stcb);
2004 if (stcb->sctp_ep->sctp_lport != lport) {
2005 SCTP_TCB_UNLOCK(stcb);
2008 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
2009 SCTP_TCB_UNLOCK(stcb);
2012 /* RRS:Need toaddr check here */
2013 if (sctp_does_stcb_own_this_addr(stcb, to) == 0) {
2014 /* Endpoint does not own this address */
2015 SCTP_TCB_UNLOCK(stcb);
2020 * If we have both vtags that's all we match
2023 if (stcb->asoc.peer_vtag == remote_tag) {
2025 * If both tags match we consider it
2026 * conclusive and check NO
2027 * source/destination addresses
2032 if (skip_src_check) {
2035 net = sctp_findnet(stcb, from);
2037 *netp = NULL; /* unknown */
2040 *inp_p = stcb->sctp_ep;
2041 SCTP_INP_INFO_RUNLOCK();
2044 net = sctp_findnet(stcb, from);
2048 SCTP_STAT_INCR(sctps_vtagexpress);
2049 *inp_p = stcb->sctp_ep;
2050 SCTP_INP_INFO_RUNLOCK();
2054 * not him, this should only happen in rare
2055 * cases so I peg it.
2057 SCTP_STAT_INCR(sctps_vtagbogus);
2060 SCTP_TCB_UNLOCK(stcb);
2062 SCTP_INP_INFO_RUNLOCK();
2067 * Find an association with the pointer to the inbound IP packet. This can be
2068 * a IPv4 or IPv6 packet.
2071 sctp_findassociation_addr(struct mbuf *m, int iphlen, int offset,
2072 struct sctphdr *sh, struct sctp_chunkhdr *ch,
2073 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2077 struct sctp_tcb *retval;
2078 struct sockaddr_storage to_store, from_store;
2079 struct sockaddr *to = (struct sockaddr *)&to_store;
2080 struct sockaddr *from = (struct sockaddr *)&from_store;
2081 struct sctp_inpcb *inp;
2083 iph = mtod(m, struct ip *);
2084 switch (iph->ip_v) {
2088 struct sockaddr_in *from4;
2090 from4 = (struct sockaddr_in *)&from_store;
2091 bzero(from4, sizeof(*from4));
2092 from4->sin_family = AF_INET;
2093 from4->sin_len = sizeof(struct sockaddr_in);
2094 from4->sin_addr.s_addr = iph->ip_src.s_addr;
2095 from4->sin_port = sh->src_port;
2099 case IPV6_VERSION >> 4:
2102 struct ip6_hdr *ip6;
2103 struct sockaddr_in6 *from6;
2105 ip6 = mtod(m, struct ip6_hdr *);
2106 from6 = (struct sockaddr_in6 *)&from_store;
2107 bzero(from6, sizeof(*from6));
2108 from6->sin6_family = AF_INET6;
2109 from6->sin6_len = sizeof(struct sockaddr_in6);
2110 from6->sin6_addr = ip6->ip6_src;
2111 from6->sin6_port = sh->src_port;
2112 /* Get the scopes in properly to the sin6 addr's */
2113 /* we probably don't need these operations */
2114 (void)sa6_recoverscope(from6);
2115 sa6_embedscope(from6, MODULE_GLOBAL(ip6_use_defzone));
2120 /* Currently not supported. */
2125 switch (iph->ip_v) {
2129 struct sockaddr_in *to4;
2131 to4 = (struct sockaddr_in *)&to_store;
2132 bzero(to4, sizeof(*to4));
2133 to4->sin_family = AF_INET;
2134 to4->sin_len = sizeof(struct sockaddr_in);
2135 to4->sin_addr.s_addr = iph->ip_dst.s_addr;
2136 to4->sin_port = sh->dest_port;
2140 case IPV6_VERSION >> 4:
2143 struct ip6_hdr *ip6;
2144 struct sockaddr_in6 *to6;
2146 ip6 = mtod(m, struct ip6_hdr *);
2147 to6 = (struct sockaddr_in6 *)&to_store;
2148 bzero(to6, sizeof(*to6));
2149 to6->sin6_family = AF_INET6;
2150 to6->sin6_len = sizeof(struct sockaddr_in6);
2151 to6->sin6_addr = ip6->ip6_dst;
2152 to6->sin6_port = sh->dest_port;
2153 /* Get the scopes in properly to the sin6 addr's */
2154 /* we probably don't need these operations */
2155 (void)sa6_recoverscope(to6);
2156 sa6_embedscope(to6, MODULE_GLOBAL(ip6_use_defzone));
2165 /* we only go down this path if vtag is non-zero */
2166 retval = sctp_findassoc_by_vtag(from, to, ntohl(sh->v_tag),
2167 inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0);
2173 if ((ch->chunk_type != SCTP_INITIATION) &&
2174 (ch->chunk_type != SCTP_INITIATION_ACK) &&
2175 (ch->chunk_type != SCTP_COOKIE_ACK) &&
2176 (ch->chunk_type != SCTP_COOKIE_ECHO)) {
2177 /* Other chunk types go to the tcp pool. */
2181 retval = sctp_findassociation_addr_sa(to, from, inp_p, netp,
2182 find_tcp_pool, vrf_id);
2185 retval = sctp_findassociation_addr_sa(to, from, &inp, netp,
2186 find_tcp_pool, vrf_id);
2188 SCTPDBG(SCTP_DEBUG_PCB1, "retval:%p inp:%p\n", retval, inp);
2189 if (retval == NULL && inp) {
2190 /* Found a EP but not this address */
2191 if ((ch->chunk_type == SCTP_INITIATION) ||
2192 (ch->chunk_type == SCTP_INITIATION_ACK)) {
2194 * special hook, we do NOT return linp or an
2195 * association that is linked to an existing
2196 * association that is under the TCP pool (i.e. no
2197 * listener exists). The endpoint finding routine
2198 * will always find a listener before examining the
2201 if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
2207 retval = sctp_findassociation_special_addr(m, iphlen,
2208 offset, sh, &inp, netp, to);
2209 if (inp_p != NULL) {
2214 SCTPDBG(SCTP_DEBUG_PCB1, "retval is %p\n", retval);
2219 * lookup an association by an ASCONF lookup address.
2220 * if the lookup address is 0.0.0.0 or ::0, use the vtag to do the lookup
2223 sctp_findassociation_ep_asconf(struct mbuf *m, int iphlen, int offset,
2224 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2226 struct sctp_tcb *stcb;
2227 struct sockaddr_in *sin;
2230 struct sockaddr_in6 *sin6;
2233 struct sockaddr_storage local_store, remote_store;
2234 struct sockaddr *to;
2238 struct ip6_hdr *ip6;
2241 struct sctp_paramhdr parm_buf, *phdr;
2243 int zero_address = 0;
2246 memset(&local_store, 0, sizeof(local_store));
2247 memset(&remote_store, 0, sizeof(remote_store));
2248 to = (struct sockaddr *)&local_store;
2249 /* First get the destination address setup too. */
2250 iph = mtod(m, struct ip *);
2251 switch (iph->ip_v) {
2254 sin = (struct sockaddr_in *)&local_store;
2255 sin->sin_family = AF_INET;
2256 sin->sin_len = sizeof(*sin);
2257 sin->sin_port = sh->dest_port;
2258 sin->sin_addr.s_addr = iph->ip_dst.s_addr;
2261 case IPV6_VERSION >> 4:
2263 ip6 = mtod(m, struct ip6_hdr *);
2264 sin6 = (struct sockaddr_in6 *)&local_store;
2265 sin6->sin6_family = AF_INET6;
2266 sin6->sin6_len = sizeof(*sin6);
2267 sin6->sin6_port = sh->dest_port;
2268 sin6->sin6_addr = ip6->ip6_dst;
2275 phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk),
2276 &parm_buf, sizeof(struct sctp_paramhdr));
2278 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n",
2282 ptype = (int)((uint32_t) ntohs(phdr->param_type));
2283 /* get the correlation address */
2286 case SCTP_IPV6_ADDRESS:
2288 /* ipv6 address param */
2289 struct sctp_ipv6addr_param *p6, p6_buf;
2291 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) {
2294 p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m,
2295 offset + sizeof(struct sctp_asconf_chunk),
2296 &p6_buf.ph, sizeof(*p6));
2298 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n",
2302 sin6 = (struct sockaddr_in6 *)&remote_store;
2303 sin6->sin6_family = AF_INET6;
2304 sin6->sin6_len = sizeof(*sin6);
2305 sin6->sin6_port = sh->src_port;
2306 memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr));
2307 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
2312 case SCTP_IPV4_ADDRESS:
2314 /* ipv4 address param */
2315 struct sctp_ipv4addr_param *p4, p4_buf;
2317 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) {
2320 p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m,
2321 offset + sizeof(struct sctp_asconf_chunk),
2322 &p4_buf.ph, sizeof(*p4));
2324 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n",
2328 sin = (struct sockaddr_in *)&remote_store;
2329 sin->sin_family = AF_INET;
2330 sin->sin_len = sizeof(*sin);
2331 sin->sin_port = sh->src_port;
2332 memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr));
2333 if (sin->sin_addr.s_addr == INADDR_ANY)
2338 /* invalid address param type */
2343 stcb = sctp_findassoc_by_vtag(NULL, to, ntohl(sh->v_tag), inp_p,
2344 netp, sh->src_port, sh->dest_port, 1, vrf_id, 0);
2346 * printf("findassociation_ep_asconf: zero lookup address
2347 * finds stcb 0x%x\n", (uint32_t)stcb);
2350 stcb = sctp_findassociation_ep_addr(inp_p,
2351 (struct sockaddr *)&remote_store, netp,
2359 * allocate a sctp_inpcb and setup a temporary binding to a port/all
2360 * addresses. This way if we don't get a bind we by default pick a ephemeral
2361 * port with all addresses bound.
2364 sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
2367 * we get called when a new endpoint starts up. We need to allocate
2368 * the sctp_inpcb structure from the zone and init it. Mark it as
2369 * unbound and find a port that we can use as an ephemeral with
2370 * INADDR_ANY. If the user binds later no problem we can then add in
2371 * the specific addresses. And setup the default parameters for the
2375 struct sctp_inpcb *inp;
2377 struct timeval time;
2378 sctp_sharedkey_t *null_key;
2382 SCTP_INP_INFO_WLOCK();
2383 inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb);
2385 SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n");
2386 SCTP_INP_INFO_WUNLOCK();
2387 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2391 bzero(inp, sizeof(*inp));
2393 /* bump generations */
2394 /* setup socket pointers */
2395 inp->sctp_socket = so;
2396 inp->ip_inp.inp.inp_socket = so;
2397 inp->sctp_associd_counter = 1;
2398 inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT;
2399 inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
2400 inp->sctp_cmt_on_off = SCTP_BASE_SYSCTL(sctp_cmt_on_off);
2401 inp->sctp_ecn_enable = SCTP_BASE_SYSCTL(sctp_ecn_enable);
2402 /* init the small hash table we use to track asocid <-> tcb */
2403 inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark);
2404 if (inp->sctp_asocidhash == NULL) {
2405 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2406 SCTP_INP_INFO_WUNLOCK();
2411 struct inpcbpolicy *pcb_sp = NULL;
2413 error = ipsec_init_policy(so, &pcb_sp);
2414 /* Arrange to share the policy */
2415 inp->ip_inp.inp.inp_sp = pcb_sp;
2416 ((struct in6pcb *)(&inp->ip_inp.inp))->in6p_sp = pcb_sp;
2419 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2420 SCTP_INP_INFO_WUNLOCK();
2424 SCTP_INCR_EP_COUNT();
2425 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
2426 SCTP_INP_INFO_WUNLOCK();
2428 so->so_pcb = (caddr_t)inp;
2430 if ((SCTP_SO_TYPE(so) == SOCK_DGRAM) ||
2431 (SCTP_SO_TYPE(so) == SOCK_SEQPACKET)) {
2432 /* UDP style socket */
2433 inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
2434 SCTP_PCB_FLAGS_UNBOUND);
2435 /* Be sure it is NON-BLOCKING IO for UDP */
2436 /* SCTP_SET_SO_NBIO(so); */
2437 } else if (SCTP_SO_TYPE(so) == SOCK_STREAM) {
2438 /* TCP style socket */
2439 inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
2440 SCTP_PCB_FLAGS_UNBOUND);
2441 /* Be sure we have blocking IO by default */
2442 SCTP_CLEAR_SO_NBIO(so);
2445 * unsupported socket type (RAW, etc)- in case we missed it
2448 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
2450 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2451 return (EOPNOTSUPP);
2453 if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) {
2454 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2455 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2456 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) {
2457 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2458 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2459 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) {
2460 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2461 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2463 inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize),
2464 &inp->sctp_hashmark);
2465 if (inp->sctp_tcbhash == NULL) {
2466 SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
2467 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2469 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2472 inp->def_vrf_id = vrf_id;
2474 SCTP_INP_INFO_WLOCK();
2475 SCTP_INP_LOCK_INIT(inp);
2476 INP_LOCK_INIT(&inp->ip_inp.inp, "inp", "sctpinp");
2477 SCTP_INP_READ_INIT(inp);
2478 SCTP_ASOC_CREATE_LOCK_INIT(inp);
2479 /* lock the new ep */
2480 SCTP_INP_WLOCK(inp);
2482 /* add it to the info area */
2483 LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list);
2484 SCTP_INP_INFO_WUNLOCK();
2486 TAILQ_INIT(&inp->read_queue);
2487 LIST_INIT(&inp->sctp_addr_list);
2489 LIST_INIT(&inp->sctp_asoc_list);
2491 #ifdef SCTP_TRACK_FREED_ASOCS
2493 LIST_INIT(&inp->sctp_asoc_free_list);
2495 /* Init the timer structure for signature change */
2496 SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer);
2497 inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE;
2499 /* now init the actual endpoint default data */
2502 /* setup the base timeout information */
2503 m->sctp_timeoutticks[SCTP_TIMER_SEND] = SEC_TO_TICKS(SCTP_SEND_SEC); /* needed ? */
2504 m->sctp_timeoutticks[SCTP_TIMER_INIT] = SEC_TO_TICKS(SCTP_INIT_SEC); /* needed ? */
2505 m->sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default));
2506 m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default));
2507 m->sctp_timeoutticks[SCTP_TIMER_PMTU] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default));
2508 m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default));
2509 m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default));
2510 /* all max/min max are in ms */
2511 m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default);
2512 m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default);
2513 m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default);
2514 m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default);
2515 m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default);
2517 m->max_open_streams_intome = MAX_SCTP_STREAMS;
2519 m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default);
2520 m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default);
2521 m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default);
2522 m->sctp_sws_sender = SCTP_SWS_SENDER_DEF;
2523 m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF;
2524 m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default);
2525 m->fr_max_burst = SCTP_BASE_SYSCTL(sctp_fr_max_burst_default);
2527 m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module);
2528 m->sctp_default_ss_module = SCTP_BASE_SYSCTL(sctp_default_ss_module);
2529 /* number of streams to pre-open on a association */
2530 m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default);
2532 /* Add adaptation cookie */
2533 m->adaptation_layer_indicator = 0x504C5253;
2535 /* seed random number generator */
2536 m->random_counter = 1;
2537 m->store_at = SCTP_SIGNATURE_SIZE;
2538 SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers));
2539 sctp_fill_random_store(m);
2541 /* Minimum cookie size */
2542 m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) +
2543 sizeof(struct sctp_state_cookie);
2544 m->size_of_a_cookie += SCTP_SIGNATURE_SIZE;
2546 /* Setup the initial secret */
2547 (void)SCTP_GETTIME_TIMEVAL(&time);
2548 m->time_of_secret_change = time.tv_sec;
2550 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
2551 m->secret_key[0][i] = sctp_select_initial_TSN(m);
2553 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
2555 /* How long is a cookie good for ? */
2556 m->def_cookie_life = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default));
2558 * Initialize authentication parameters
2560 m->local_hmacs = sctp_default_supported_hmaclist();
2561 m->local_auth_chunks = sctp_alloc_chunklist();
2562 sctp_auth_set_default_chunks(m->local_auth_chunks);
2563 LIST_INIT(&m->shared_keys);
2564 /* add default NULL key as key id 0 */
2565 null_key = sctp_alloc_sharedkey();
2566 sctp_insert_sharedkey(&m->shared_keys, null_key);
2567 SCTP_INP_WUNLOCK(inp);
2568 #ifdef SCTP_LOG_CLOSING
2569 sctp_log_closing(inp, NULL, 12);
2576 sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp,
2577 struct sctp_tcb *stcb)
2579 struct sctp_nets *net;
2580 uint16_t lport, rport;
2581 struct sctppcbhead *head;
2582 struct sctp_laddr *laddr, *oladdr;
2584 atomic_add_int(&stcb->asoc.refcnt, 1);
2585 SCTP_TCB_UNLOCK(stcb);
2586 SCTP_INP_INFO_WLOCK();
2587 SCTP_INP_WLOCK(old_inp);
2588 SCTP_INP_WLOCK(new_inp);
2589 SCTP_TCB_LOCK(stcb);
2590 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2592 new_inp->sctp_ep.time_of_secret_change =
2593 old_inp->sctp_ep.time_of_secret_change;
2594 memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key,
2595 sizeof(old_inp->sctp_ep.secret_key));
2596 new_inp->sctp_ep.current_secret_number =
2597 old_inp->sctp_ep.current_secret_number;
2598 new_inp->sctp_ep.last_secret_number =
2599 old_inp->sctp_ep.last_secret_number;
2600 new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie;
2602 /* make it so new data pours into the new socket */
2603 stcb->sctp_socket = new_inp->sctp_socket;
2604 stcb->sctp_ep = new_inp;
2606 /* Copy the port across */
2607 lport = new_inp->sctp_lport = old_inp->sctp_lport;
2608 rport = stcb->rport;
2609 /* Pull the tcb from the old association */
2610 LIST_REMOVE(stcb, sctp_tcbhash);
2611 LIST_REMOVE(stcb, sctp_tcblist);
2612 if (stcb->asoc.in_asocid_hash) {
2613 LIST_REMOVE(stcb, sctp_tcbasocidhash);
2615 /* Now insert the new_inp into the TCP connected hash */
2616 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
2618 LIST_INSERT_HEAD(head, new_inp, sctp_hash);
2619 /* Its safe to access */
2620 new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
2622 /* Now move the tcb into the endpoint list */
2623 LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist);
2625 * Question, do we even need to worry about the ep-hash since we
2626 * only have one connection? Probably not :> so lets get rid of it
2627 * and not suck up any kernel memory in that.
2629 if (stcb->asoc.in_asocid_hash) {
2630 struct sctpasochead *lhd;
2632 lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id,
2633 new_inp->hashasocidmark)];
2634 LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash);
2636 /* Ok. Let's restart timer. */
2637 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2638 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp,
2642 SCTP_INP_INFO_WUNLOCK();
2643 if (new_inp->sctp_tcbhash != NULL) {
2644 SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark);
2645 new_inp->sctp_tcbhash = NULL;
2647 if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2648 /* Subset bound, so copy in the laddr list from the old_inp */
2649 LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) {
2650 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2651 if (laddr == NULL) {
2653 * Gak, what can we do? This assoc is really
2654 * HOSED. We probably should send an abort
2657 SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n");
2660 SCTP_INCR_LADDR_COUNT();
2661 bzero(laddr, sizeof(*laddr));
2662 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2663 laddr->ifa = oladdr->ifa;
2664 atomic_add_int(&laddr->ifa->refcount, 1);
2665 LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr,
2667 new_inp->laddr_count++;
2671 * Now any running timers need to be adjusted since we really don't
2672 * care if they are running or not just blast in the new_inp into
2676 stcb->asoc.hb_timer.ep = (void *)new_inp;
2677 stcb->asoc.dack_timer.ep = (void *)new_inp;
2678 stcb->asoc.asconf_timer.ep = (void *)new_inp;
2679 stcb->asoc.strreset_timer.ep = (void *)new_inp;
2680 stcb->asoc.shut_guard_timer.ep = (void *)new_inp;
2681 stcb->asoc.autoclose_timer.ep = (void *)new_inp;
2682 stcb->asoc.delayed_event_timer.ep = (void *)new_inp;
2683 stcb->asoc.delete_prim_timer.ep = (void *)new_inp;
2684 /* now what about the nets? */
2685 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2686 net->pmtu_timer.ep = (void *)new_inp;
2687 net->rxt_timer.ep = (void *)new_inp;
2688 net->fr_timer.ep = (void *)new_inp;
2690 SCTP_INP_WUNLOCK(new_inp);
2691 SCTP_INP_WUNLOCK(old_inp);
2697 /* sctp_ifap is used to bypass normal local address validation checks */
2699 sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
2700 struct sctp_ifa *sctp_ifap, struct thread *p)
2702 /* bind a ep to a socket address */
2703 struct sctppcbhead *head;
2704 struct sctp_inpcb *inp, *inp_tmp;
2705 struct inpcb *ip_inp;
2706 int port_reuse_active = 0;
2715 inp = (struct sctp_inpcb *)so->so_pcb;
2716 ip_inp = (struct inpcb *)so->so_pcb;
2719 SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port:%d\n",
2720 ntohs(((struct sockaddr_in *)addr)->sin_port));
2721 SCTPDBG(SCTP_DEBUG_PCB1, "Addr :");
2722 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
2725 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2726 /* already did a bind, subsequent binds NOT allowed ! */
2727 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2732 panic("null proc/thread");
2735 switch (addr->sa_family) {
2738 struct sockaddr_in *sin;
2740 /* IPV6_V6ONLY socket? */
2741 if (SCTP_IPV6_V6ONLY(ip_inp)) {
2742 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2745 if (addr->sa_len != sizeof(*sin)) {
2746 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2749 sin = (struct sockaddr_in *)addr;
2750 lport = sin->sin_port;
2752 * For LOOPBACK the prison_local_ip4() call
2753 * will transmute the ip address to the
2756 if (p && (error = prison_local_ip4(p->td_ucred, &sin->sin_addr)) != 0) {
2757 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2760 if (sin->sin_addr.s_addr != INADDR_ANY) {
2769 * Only for pure IPv6 Address. (No IPv4
2772 struct sockaddr_in6 *sin6;
2774 sin6 = (struct sockaddr_in6 *)addr;
2776 if (addr->sa_len != sizeof(*sin6)) {
2777 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2780 lport = sin6->sin6_port;
2783 * For LOOPBACK the prison_local_ip6() call
2784 * will transmute the ipv6 address to the
2787 if (p && (error = prison_local_ip6(p->td_ucred, &sin6->sin6_addr,
2788 (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
2789 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2792 if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2794 /* KAME hack: embed scopeid */
2795 if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
2796 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2800 /* this must be cleared for ifa_ifwithaddr() */
2801 sin6->sin6_scope_id = 0;
2806 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EAFNOSUPPORT);
2807 return (EAFNOSUPPORT);
2810 SCTP_INP_INFO_WLOCK();
2811 SCTP_INP_WLOCK(inp);
2812 /* Setup a vrf_id to be the default for the non-bind-all case. */
2813 vrf_id = inp->def_vrf_id;
2815 /* increase our count due to the unlock we do */
2816 SCTP_INP_INCR_REF(inp);
2819 * Did the caller specify a port? if so we must see if a ep
2820 * already has this one bound.
2822 /* got to be root to get at low ports */
2823 if (ntohs(lport) < IPPORT_RESERVED) {
2825 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2827 SCTP_INP_DECR_REF(inp);
2828 SCTP_INP_WUNLOCK(inp);
2829 SCTP_INP_INFO_WUNLOCK();
2834 SCTP_INP_DECR_REF(inp);
2835 SCTP_INP_WUNLOCK(inp);
2836 SCTP_INP_INFO_WUNLOCK();
2837 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2840 SCTP_INP_WUNLOCK(inp);
2842 vrf_id = inp->def_vrf_id;
2843 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2844 if (inp_tmp != NULL) {
2846 * lock guy returned and lower count note
2847 * that we are not bound so inp_tmp should
2848 * NEVER be inp. And it is this inp
2849 * (inp_tmp) that gets the reference bump,
2850 * so we must lower it.
2852 SCTP_INP_DECR_REF(inp_tmp);
2854 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2855 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2857 * Ok, must be one-2-one and
2858 * allowing port re-use
2860 port_reuse_active = 1;
2861 goto continue_anyway;
2863 SCTP_INP_DECR_REF(inp);
2864 SCTP_INP_INFO_WUNLOCK();
2865 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2866 return (EADDRINUSE);
2869 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2870 if (inp_tmp != NULL) {
2872 * lock guy returned and lower count note
2873 * that we are not bound so inp_tmp should
2874 * NEVER be inp. And it is this inp
2875 * (inp_tmp) that gets the reference bump,
2876 * so we must lower it.
2878 SCTP_INP_DECR_REF(inp_tmp);
2880 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2881 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2883 * Ok, must be one-2-one and
2884 * allowing port re-use
2886 port_reuse_active = 1;
2887 goto continue_anyway;
2889 SCTP_INP_DECR_REF(inp);
2890 SCTP_INP_INFO_WUNLOCK();
2891 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2892 return (EADDRINUSE);
2896 SCTP_INP_WLOCK(inp);
2898 /* verify that no lport is not used by a singleton */
2899 if ((port_reuse_active == 0) &&
2900 (inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))
2902 /* Sorry someone already has this one bound */
2903 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2904 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2905 port_reuse_active = 1;
2907 SCTP_INP_DECR_REF(inp);
2908 SCTP_INP_WUNLOCK(inp);
2909 SCTP_INP_INFO_WUNLOCK();
2910 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2911 return (EADDRINUSE);
2916 uint16_t first, last, candidate;
2920 if (ip_inp->inp_flags & INP_HIGHPORT) {
2921 first = MODULE_GLOBAL(ipport_hifirstauto);
2922 last = MODULE_GLOBAL(ipport_hilastauto);
2923 } else if (ip_inp->inp_flags & INP_LOWPORT) {
2925 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2927 SCTP_INP_DECR_REF(inp);
2928 SCTP_INP_WUNLOCK(inp);
2929 SCTP_INP_INFO_WUNLOCK();
2930 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2933 first = MODULE_GLOBAL(ipport_lowfirstauto);
2934 last = MODULE_GLOBAL(ipport_lowlastauto);
2936 first = MODULE_GLOBAL(ipport_firstauto);
2937 last = MODULE_GLOBAL(ipport_lastauto);
2946 count = last - first + 1; /* number of candidates */
2947 candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count);
2951 if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) {
2956 SCTP_INP_DECR_REF(inp);
2957 SCTP_INP_WUNLOCK(inp);
2958 SCTP_INP_INFO_WUNLOCK();
2959 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2960 return (EADDRINUSE);
2962 if (candidate == last)
2965 candidate = candidate + 1;
2968 lport = htons(candidate);
2970 SCTP_INP_DECR_REF(inp);
2971 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE |
2972 SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
2974 * this really should not happen. The guy did a non-blocking
2975 * bind and then did a close at the same time.
2977 SCTP_INP_WUNLOCK(inp);
2978 SCTP_INP_INFO_WUNLOCK();
2979 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2982 /* ok we look clear to give out this port, so lets setup the binding */
2984 /* binding to all addresses, so just set in the proper flags */
2985 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL;
2986 /* set the automatic addr changes from kernel flag */
2987 if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) {
2988 sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
2989 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
2991 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
2992 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
2994 if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) {
2995 sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
2997 sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3000 * set the automatic mobility_base from kernel flag (by
3003 if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) {
3004 sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE);
3005 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3007 sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE);
3008 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3011 * set the automatic mobility_fasthandoff from kernel flag
3014 if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) {
3015 sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF);
3016 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3018 sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF);
3019 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3023 * bind specific, make sure flags is off and add a new
3024 * address structure to the sctp_addr_list inside the ep
3027 * We will need to allocate one and insert it at the head. The
3028 * socketopt call can just insert new addresses in there as
3029 * well. It will also have to do the embed scope kame hack
3030 * too (before adding).
3032 struct sctp_ifa *ifa;
3033 struct sockaddr_storage store_sa;
3035 memset(&store_sa, 0, sizeof(store_sa));
3036 if (addr->sa_family == AF_INET) {
3037 struct sockaddr_in *sin;
3039 sin = (struct sockaddr_in *)&store_sa;
3040 memcpy(sin, addr, sizeof(struct sockaddr_in));
3042 } else if (addr->sa_family == AF_INET6) {
3043 struct sockaddr_in6 *sin6;
3045 sin6 = (struct sockaddr_in6 *)&store_sa;
3046 memcpy(sin6, addr, sizeof(struct sockaddr_in6));
3047 sin6->sin6_port = 0;
3050 * first find the interface with the bound address need to
3051 * zero out the port to find the address! yuck! can't do
3052 * this earlier since need port for sctp_pcb_findep()
3054 if (sctp_ifap != NULL)
3058 * Note for BSD we hit here always other O/S's will
3059 * pass things in via the sctp_ifap argument
3062 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&store_sa,
3063 vrf_id, SCTP_ADDR_NOT_LOCKED);
3066 /* Can't find an interface with that address */
3067 SCTP_INP_WUNLOCK(inp);
3068 SCTP_INP_INFO_WUNLOCK();
3069 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRNOTAVAIL);
3070 return (EADDRNOTAVAIL);
3072 if (addr->sa_family == AF_INET6) {
3073 /* GAK, more FIXME IFA lock? */
3074 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
3075 /* Can't bind a non-existent addr. */
3076 SCTP_INP_WUNLOCK(inp);
3077 SCTP_INP_INFO_WUNLOCK();
3078 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3082 /* we're not bound all */
3083 inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL;
3084 /* allow bindx() to send ASCONF's for binding changes */
3085 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3086 /* clear automatic addr changes from kernel flag */
3087 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3089 /* add this address to the endpoint list */
3090 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0);
3092 SCTP_INP_WUNLOCK(inp);
3093 SCTP_INP_INFO_WUNLOCK();
3098 /* find the bucket */
3099 if (port_reuse_active) {
3100 /* Put it into tcp 1-2-1 hash */
3101 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))];
3102 inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
3104 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))];
3106 /* put it in the bucket */
3107 LIST_INSERT_HEAD(head, inp, sctp_hash);
3108 SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n",
3109 head, ntohs(lport), port_reuse_active);
3110 /* set in the port */
3111 inp->sctp_lport = lport;
3113 /* turn off just the unbound flag */
3114 inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
3115 SCTP_INP_WUNLOCK(inp);
3116 SCTP_INP_INFO_WUNLOCK();
3122 sctp_iterator_inp_being_freed(struct sctp_inpcb *inp)
3124 struct sctp_iterator *it, *nit;
3127 * We enter with the only the ITERATOR_LOCK in place and a write
3128 * lock on the inp_info stuff.
3130 it = sctp_it_ctl.cur_it;
3131 if (it && (it->vn != curvnet)) {
3132 /* Its not looking at our VNET */
3135 if (it && (it->inp == inp)) {
3137 * This is tricky and we hold the iterator lock, but when it
3138 * returns and gets the lock (when we release it) the
3139 * iterator will try to operate on inp. We need to stop that
3140 * from happening. But of course the iterator has a
3141 * reference on the stcb and inp. We can mark it and it will
3144 * If its a single iterator situation, we set the end iterator
3145 * flag. Otherwise we set the iterator to go to the next
3149 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3150 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
3152 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_INP;
3156 * Now go through and remove any single reference to our inp that
3157 * may be still pending on the list
3159 SCTP_IPI_ITERATOR_WQ_LOCK();
3160 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
3161 if (it->vn != curvnet) {
3164 if (it->inp == inp) {
3165 /* This one points to me is it inp specific? */
3166 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3167 /* Remove and free this one */
3168 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
3170 if (it->function_atend != NULL) {
3171 (*it->function_atend) (it->pointer, it->val);
3173 SCTP_FREE(it, SCTP_M_ITER);
3175 it->inp = LIST_NEXT(it->inp, sctp_list);
3177 SCTP_INP_INCR_REF(it->inp);
3181 * When its put in the refcnt is incremented so decr
3184 SCTP_INP_DECR_REF(inp);
3187 SCTP_IPI_ITERATOR_WQ_UNLOCK();
3190 /* release sctp_inpcb unbind the port */
3192 sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
3195 * Here we free a endpoint. We must find it (if it is in the Hash
3196 * table) and remove it from there. Then we must also find it in the
3197 * overall list and remove it from there. After all removals are
3198 * complete then any timer has to be stopped. Then start the actual
3199 * freeing. a) Any local lists. b) Any associations. c) The hash of
3200 * all associations. d) finally the ep itself.
3203 struct sctp_tcb *asoc, *nasoc;
3204 struct sctp_laddr *laddr, *nladdr;
3205 struct inpcb *ip_pcb;
3207 int being_refed = 0;
3208 struct sctp_queued_to_read *sq, *nsq;
3210 sctp_sharedkey_t *shared_key, *nshared_key;
3213 #ifdef SCTP_LOG_CLOSING
3214 sctp_log_closing(inp, NULL, 0);
3216 SCTP_ITERATOR_LOCK();
3217 /* mark any iterators on the list or being processed */
3218 sctp_iterator_inp_being_freed(inp);
3219 SCTP_ITERATOR_UNLOCK();
3220 so = inp->sctp_socket;
3221 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
3222 /* been here before.. eeks.. get out of here */
3223 SCTP_PRINTF("This conflict in free SHOULD not be happening! from %d, imm %d\n", from, immediate);
3224 #ifdef SCTP_LOG_CLOSING
3225 sctp_log_closing(inp, NULL, 1);
3229 SCTP_ASOC_CREATE_LOCK(inp);
3230 SCTP_INP_INFO_WLOCK();
3232 SCTP_INP_WLOCK(inp);
3233 if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
3234 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP;
3235 /* socket is gone, so no more wakeups allowed */
3236 inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE;
3237 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
3238 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
3241 /* First time through we have the socket lock, after that no more. */
3242 sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL,
3243 SCTP_FROM_SCTP_PCB + SCTP_LOC_1);
3246 sctp_m_freem(inp->control);
3247 inp->control = NULL;
3250 sctp_m_freem(inp->pkt);
3254 ip_pcb = &inp->ip_inp.inp; /* we could just cast the main pointer
3255 * here but I will be nice :> (i.e.
3257 if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
3261 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3262 SCTP_TCB_LOCK(asoc);
3263 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3264 /* Skip guys being freed */
3266 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3268 * Special case - we did not start a
3269 * kill timer on the asoc due to it
3270 * was not closed. So go ahead and
3273 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3274 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3276 SCTP_TCB_UNLOCK(asoc);
3279 if (((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_WAIT) ||
3280 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_ECHOED)) &&
3281 (asoc->asoc.total_output_queue_size == 0)) {
3283 * If we have data in queue, we don't want
3284 * to just free since the app may have done,
3285 * send()/close or connect/send/close. And
3286 * it wants the data to get across first.
3288 /* Just abandon things in the front states */
3289 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE,
3290 SCTP_FROM_SCTP_PCB + SCTP_LOC_2) == 0) {
3295 /* Disconnect the socket please */
3296 asoc->sctp_socket = NULL;
3297 asoc->asoc.state |= SCTP_STATE_CLOSED_SOCKET;
3298 if ((asoc->asoc.size_on_reasm_queue > 0) ||
3299 (asoc->asoc.control_pdapi) ||
3300 (asoc->asoc.size_on_all_streams > 0) ||
3301 (so && (so->so_rcv.sb_cc > 0))
3303 /* Left with Data unread */
3304 struct mbuf *op_err;
3306 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3307 0, M_DONTWAIT, 1, MT_DATA);
3309 /* Fill in the user initiated abort */
3310 struct sctp_paramhdr *ph;
3313 SCTP_BUF_LEN(op_err) =
3314 sizeof(struct sctp_paramhdr) + sizeof(uint32_t);
3316 struct sctp_paramhdr *);
3317 ph->param_type = htons(
3318 SCTP_CAUSE_USER_INITIATED_ABT);
3319 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3320 ippp = (uint32_t *) (ph + 1);
3321 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_3);
3323 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_3;
3324 #if defined(SCTP_PANIC_ON_ABORT)
3325 panic("inpcb_free does an abort");
3327 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3328 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3329 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3330 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3331 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3333 if (sctp_free_assoc(inp, asoc,
3334 SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_4) == 0) {
3338 } else if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3339 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3340 (asoc->asoc.stream_queue_cnt == 0)
3342 if (asoc->asoc.locked_on_sending) {
3345 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
3346 (SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
3348 * there is nothing queued to send,
3349 * so I send shutdown
3351 sctp_send_shutdown(asoc, asoc->asoc.primary_destination);
3352 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3353 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3354 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3356 SCTP_SET_STATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_SENT);
3357 SCTP_CLEAR_SUBSTATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_PENDING);
3358 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, asoc->sctp_ep, asoc,
3359 asoc->asoc.primary_destination);
3360 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3361 asoc->asoc.primary_destination);
3362 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED);
3365 /* mark into shutdown pending */
3366 struct sctp_stream_queue_pending *sp;
3368 asoc->asoc.state |= SCTP_STATE_SHUTDOWN_PENDING;
3369 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3370 asoc->asoc.primary_destination);
3371 if (asoc->asoc.locked_on_sending) {
3372 sp = TAILQ_LAST(&((asoc->asoc.locked_on_sending)->outqueue),
3375 SCTP_PRINTF("Error, sp is NULL, locked on sending is %p strm:%d\n",
3376 asoc->asoc.locked_on_sending,
3377 asoc->asoc.locked_on_sending->stream_no);
3379 if ((sp->length == 0) && (sp->msg_is_complete == 0))
3380 asoc->asoc.state |= SCTP_STATE_PARTIAL_MSG_LEFT;
3383 if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3384 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3385 (asoc->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
3386 struct mbuf *op_err;
3389 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3390 0, M_DONTWAIT, 1, MT_DATA);
3396 struct sctp_paramhdr *ph;
3399 SCTP_BUF_LEN(op_err) =
3400 (sizeof(struct sctp_paramhdr) +
3403 struct sctp_paramhdr *);
3404 ph->param_type = htons(
3405 SCTP_CAUSE_USER_INITIATED_ABT);
3406 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3407 ippp = (uint32_t *) (ph + 1);
3408 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_5);
3410 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_5;
3411 #if defined(SCTP_PANIC_ON_ABORT)
3412 panic("inpcb_free does an abort");
3415 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3416 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3417 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3418 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3419 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3421 if (sctp_free_assoc(inp, asoc,
3422 SCTP_PCBFREE_NOFORCE,
3423 SCTP_FROM_SCTP_PCB + SCTP_LOC_6) == 0) {
3428 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
3432 SCTP_TCB_UNLOCK(asoc);
3434 /* now is there some left in our SHUTDOWN state? */
3436 #ifdef SCTP_LOG_CLOSING
3437 sctp_log_closing(inp, NULL, 2);
3439 inp->sctp_socket = NULL;
3440 SCTP_INP_WUNLOCK(inp);
3441 SCTP_ASOC_CREATE_UNLOCK(inp);
3442 SCTP_INP_INFO_WUNLOCK();
3446 inp->sctp_socket = NULL;
3447 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) !=
3448 SCTP_PCB_FLAGS_UNBOUND) {
3450 * ok, this guy has been bound. It's port is somewhere in
3451 * the SCTP_BASE_INFO(hash table). Remove it!
3453 LIST_REMOVE(inp, sctp_hash);
3454 inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND;
3457 * If there is a timer running to kill us, forget it, since it may
3458 * have a contest on the INP lock.. which would cause us to die ...
3461 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3462 SCTP_TCB_LOCK(asoc);
3463 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3464 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3465 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3466 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3469 SCTP_TCB_UNLOCK(asoc);
3472 /* Free associations that are NOT killing us */
3473 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_COOKIE_WAIT) &&
3474 ((asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) {
3475 struct mbuf *op_err;
3478 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3479 0, M_DONTWAIT, 1, MT_DATA);
3481 /* Fill in the user initiated abort */
3482 struct sctp_paramhdr *ph;
3484 SCTP_BUF_LEN(op_err) = (sizeof(struct sctp_paramhdr) +
3486 ph = mtod(op_err, struct sctp_paramhdr *);
3487 ph->param_type = htons(
3488 SCTP_CAUSE_USER_INITIATED_ABT);
3489 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3490 ippp = (uint32_t *) (ph + 1);
3491 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_7);
3494 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_7;
3495 #if defined(SCTP_PANIC_ON_ABORT)
3496 panic("inpcb_free does an abort");
3498 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3499 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3500 } else if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3502 SCTP_TCB_UNLOCK(asoc);
3505 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3506 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3507 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3509 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_8) == 0) {
3514 /* Ok we have someone out there that will kill us */
3515 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3516 #ifdef SCTP_LOG_CLOSING
3517 sctp_log_closing(inp, NULL, 3);
3519 SCTP_INP_WUNLOCK(inp);
3520 SCTP_ASOC_CREATE_UNLOCK(inp);
3521 SCTP_INP_INFO_WUNLOCK();
3524 if (SCTP_INP_LOCK_CONTENDED(inp))
3526 if (SCTP_INP_READ_CONTENDED(inp))
3528 if (SCTP_ASOC_CREATE_LOCK_CONTENDED(inp))
3531 if ((inp->refcount) ||
3533 (inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) {
3534 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3535 #ifdef SCTP_LOG_CLOSING
3536 sctp_log_closing(inp, NULL, 4);
3538 sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
3539 SCTP_INP_WUNLOCK(inp);
3540 SCTP_ASOC_CREATE_UNLOCK(inp);
3541 SCTP_INP_INFO_WUNLOCK();
3544 inp->sctp_ep.signature_change.type = 0;
3545 inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE;
3547 * Remove it from the list .. last thing we need a lock for.
3549 LIST_REMOVE(inp, sctp_list);
3550 SCTP_INP_WUNLOCK(inp);
3551 SCTP_ASOC_CREATE_UNLOCK(inp);
3552 SCTP_INP_INFO_WUNLOCK();
3554 * Now we release all locks. Since this INP cannot be found anymore
3555 * except possibly by the kill timer that might be running. We call
3556 * the drain function here. It should hit the case were it sees the
3557 * ACTIVE flag cleared and exit out freeing us to proceed and
3558 * destroy everything.
3560 if (from != SCTP_CALLED_FROM_INPKILL_TIMER) {
3561 (void)SCTP_OS_TIMER_STOP_DRAIN(&inp->sctp_ep.signature_change.timer);
3563 /* Probably un-needed */
3564 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3567 #ifdef SCTP_LOG_CLOSING
3568 sctp_log_closing(inp, NULL, 5);
3572 if ((inp->sctp_asocidhash) != NULL) {
3573 SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark);
3574 inp->sctp_asocidhash = NULL;
3576 /* sa_ignore FREED_MEMORY */
3577 TAILQ_FOREACH_SAFE(sq, &inp->read_queue, next, nsq) {
3578 /* Its only abandoned if it had data left */
3580 SCTP_STAT_INCR(sctps_left_abandon);
3582 TAILQ_REMOVE(&inp->read_queue, sq, next);
3583 sctp_free_remote_addr(sq->whoFrom);
3585 so->so_rcv.sb_cc -= sq->length;
3587 sctp_m_freem(sq->data);
3591 * no need to free the net count, since at this point all
3594 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
3595 SCTP_DECR_READQ_COUNT();
3597 /* Now the sctp_pcb things */
3599 * free each asoc if it is not already closed/free. we can't use the
3600 * macro here since le_next will get freed as part of the
3601 * sctp_free_assoc() call.
3606 ipsec_delete_pcbpolicy(ip_pcb);
3609 /* Unlocks not needed since the socket is gone now */
3611 if (ip_pcb->inp_options) {
3612 (void)sctp_m_free(ip_pcb->inp_options);
3613 ip_pcb->inp_options = 0;
3615 if (ip_pcb->inp_moptions) {
3616 inp_freemoptions(ip_pcb->inp_moptions);
3617 ip_pcb->inp_moptions = 0;
3620 if (ip_pcb->inp_vflag & INP_IPV6) {
3621 struct in6pcb *in6p;
3623 in6p = (struct in6pcb *)inp;
3624 ip6_freepcbopts(in6p->in6p_outputopts);
3627 ip_pcb->inp_vflag = 0;
3628 /* free up authentication fields */
3629 if (inp->sctp_ep.local_auth_chunks != NULL)
3630 sctp_free_chunklist(inp->sctp_ep.local_auth_chunks);
3631 if (inp->sctp_ep.local_hmacs != NULL)
3632 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3634 LIST_FOREACH_SAFE(shared_key, &inp->sctp_ep.shared_keys, next, nshared_key) {
3635 LIST_REMOVE(shared_key, next);
3636 sctp_free_sharedkey(shared_key);
3637 /* sa_ignore FREED_MEMORY */
3641 * if we have an address list the following will free the list of
3642 * ifaddr's that are set into this ep. Again macro limitations here,
3643 * since the LIST_FOREACH could be a bad idea.
3645 LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
3646 sctp_remove_laddr(laddr);
3649 #ifdef SCTP_TRACK_FREED_ASOCS
3651 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_free_list, sctp_tcblist, nasoc) {
3652 LIST_REMOVE(asoc, sctp_tcblist);
3653 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), asoc);
3654 SCTP_DECR_ASOC_COUNT();
3656 /* *** END TEMP CODE *** */
3658 /* Now lets see about freeing the EP hash table. */
3659 if (inp->sctp_tcbhash != NULL) {
3660 SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
3661 inp->sctp_tcbhash = NULL;
3663 /* Now we must put the ep memory back into the zone pool */
3664 INP_LOCK_DESTROY(&inp->ip_inp.inp);
3665 SCTP_INP_LOCK_DESTROY(inp);
3666 SCTP_INP_READ_DESTROY(inp);
3667 SCTP_ASOC_CREATE_LOCK_DESTROY(inp);
3668 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
3669 SCTP_DECR_EP_COUNT();
3674 sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
3676 struct sctp_nets *net;
3678 /* locate the address */
3679 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3680 if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr))
3688 sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
3690 struct sctp_ifa *sctp_ifa;
3692 sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED);
3701 * add's a remote endpoint address, done with the INIT/INIT-ACK as well as
3702 * when a ASCONF arrives that adds it. It will also initialize all the cwnd
3706 sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
3707 int set_scope, int from)
3710 * The following is redundant to the same lines in the
3711 * sctp_aloc_assoc() but is needed since others call the add address
3714 struct sctp_nets *net, *netfirst;
3717 SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ",
3719 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr);
3721 netfirst = sctp_findnet(stcb, newaddr);
3724 * Lie and return ok, we don't want to make the association
3725 * go away for this behavior. It will happen in the TCP
3726 * model in a connected socket. It does not reach the hash
3727 * table until after the association is built so it can't be
3728 * found. Mark as reachable, since the initial creation will
3729 * have been cleared and the NOT_IN_ASSOC flag will have
3730 * been added... and we don't want to end up removing it
3733 if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) {
3734 netfirst->dest_state = (SCTP_ADDR_REACHABLE |
3735 SCTP_ADDR_UNCONFIRMED);
3737 netfirst->dest_state = SCTP_ADDR_REACHABLE;
3743 if (newaddr->sa_family == AF_INET) {
3744 struct sockaddr_in *sin;
3746 sin = (struct sockaddr_in *)newaddr;
3747 if (sin->sin_addr.s_addr == 0) {
3748 /* Invalid address */
3751 /* zero out the bzero area */
3752 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
3754 /* assure len is set */
3755 sin->sin_len = sizeof(struct sockaddr_in);
3757 #ifdef SCTP_DONT_DO_PRIVADDR_SCOPE
3758 stcb->ipv4_local_scope = 1;
3760 if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
3761 stcb->asoc.ipv4_local_scope = 1;
3763 #endif /* SCTP_DONT_DO_PRIVADDR_SCOPE */
3765 /* Validate the address is in scope */
3766 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) &&
3767 (stcb->asoc.ipv4_local_scope == 0)) {
3772 } else if (newaddr->sa_family == AF_INET6) {
3773 struct sockaddr_in6 *sin6;
3775 sin6 = (struct sockaddr_in6 *)newaddr;
3776 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3777 /* Invalid address */
3780 /* assure len is set */
3781 sin6->sin6_len = sizeof(struct sockaddr_in6);
3783 if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) {
3784 stcb->asoc.loopback_scope = 1;
3785 stcb->asoc.local_scope = 0;
3786 stcb->asoc.ipv4_local_scope = 1;
3787 stcb->asoc.site_scope = 1;
3788 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
3790 * If the new destination is a LINK_LOCAL we
3791 * must have common site scope. Don't set
3792 * the local scope since we may not share
3793 * all links, only loopback can do this.
3794 * Links on the local network would also be
3795 * on our private network for v4 too.
3797 stcb->asoc.ipv4_local_scope = 1;
3798 stcb->asoc.site_scope = 1;
3799 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
3801 * If the new destination is SITE_LOCAL then
3802 * we must have site scope in common.
3804 stcb->asoc.site_scope = 1;
3807 /* Validate the address is in scope */
3808 if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) &&
3809 (stcb->asoc.loopback_scope == 0)) {
3811 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
3812 (stcb->asoc.local_scope == 0)) {
3814 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
3815 (stcb->asoc.site_scope == 0)) {
3821 /* not supported family type */
3824 net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets);
3828 SCTP_INCR_RADDR_COUNT();
3829 bzero(net, sizeof(*net));
3830 (void)SCTP_GETTIME_TIMEVAL(&net->start_time);
3831 memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len);
3832 if (newaddr->sa_family == AF_INET) {
3833 ((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport;
3834 } else if (newaddr->sa_family == AF_INET6) {
3835 ((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport;
3837 net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id);
3838 if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) {
3839 stcb->asoc.loopback_scope = 1;
3840 stcb->asoc.ipv4_local_scope = 1;
3841 stcb->asoc.local_scope = 0;
3842 stcb->asoc.site_scope = 1;
3845 net->failure_threshold = stcb->asoc.def_net_failure;
3846 if (addr_inscope == 0) {
3847 net->dest_state = (SCTP_ADDR_REACHABLE |
3848 SCTP_ADDR_OUT_OF_SCOPE);
3850 if (from == SCTP_ADDR_IS_CONFIRMED)
3851 /* SCTP_ADDR_IS_CONFIRMED is passed by connect_x */
3852 net->dest_state = SCTP_ADDR_REACHABLE;
3854 net->dest_state = SCTP_ADDR_REACHABLE |
3855 SCTP_ADDR_UNCONFIRMED;
3858 * We set this to 0, the timer code knows that this means its an
3862 net->RTO_measured = 0;
3863 stcb->asoc.numnets++;
3864 *(&net->ref_count) = 1;
3865 net->cwr_window_tsn = net->last_cwr_tsn = stcb->asoc.sending_seq - 1;
3866 net->tos_flowlabel = 0;
3867 if (SCTP_BASE_SYSCTL(sctp_udp_tunneling_for_client_enable)) {
3868 net->port = htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port));
3873 if (newaddr->sa_family == AF_INET)
3874 net->tos_flowlabel = stcb->asoc.default_tos;
3877 if (newaddr->sa_family == AF_INET6)
3878 net->tos_flowlabel = stcb->asoc.default_flowlabel;
3880 /* Init the timer structure */
3881 SCTP_OS_TIMER_INIT(&net->rxt_timer.timer);
3882 SCTP_OS_TIMER_INIT(&net->fr_timer.timer);
3883 SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer);
3885 /* Now generate a route for this guy */
3887 /* KAME hack: embed scopeid */
3888 if (newaddr->sa_family == AF_INET6) {
3889 struct sockaddr_in6 *sin6;
3891 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3892 (void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone));
3893 sin6->sin6_scope_id = 0;
3896 SCTP_RTALLOC((sctp_route_t *) & net->ro, stcb->asoc.vrf_id);
3898 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) {
3899 /* Get source address */
3900 net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep,
3902 (sctp_route_t *) & net->ro,
3906 /* Now get the interface MTU */
3907 if (net->ro._s_addr && net->ro._s_addr->ifn_p) {
3908 net->mtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p);
3912 if (net->mtu == 0) {
3914 net->mtu = SCTP_DEFAULT_MTU;
3918 rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_rt);
3921 * Start things off to match mtu of
3924 SCTP_SET_MTU_OF_ROUTE(&net->ro._l_addr.sa,
3925 net->ro.ro_rt, net->mtu);
3928 * we take the route mtu over the interface,
3929 * since the route may be leading out the
3930 * loopback, or a different interface.
3935 if (from == SCTP_ALLOC_ASOC) {
3936 stcb->asoc.smallest_mtu = net->mtu;
3939 net->mtu = stcb->asoc.smallest_mtu;
3942 if (newaddr->sa_family == AF_INET6) {
3943 struct sockaddr_in6 *sin6;
3945 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3946 (void)sa6_recoverscope(sin6);
3950 net->mtu -= sizeof(struct udphdr);
3952 if (stcb->asoc.smallest_mtu > net->mtu) {
3953 stcb->asoc.smallest_mtu = net->mtu;
3955 /* JRS - Use the congestion control given in the CC module */
3956 stcb->asoc.cc_functions.sctp_set_initial_cc_param(stcb, net);
3959 * CMT: CUC algo - set find_pseudo_cumack to TRUE (1) at beginning
3960 * of assoc (2005/06/27, iyengar@cis.udel.edu)
3962 net->find_pseudo_cumack = 1;
3963 net->find_rtx_pseudo_cumack = 1;
3964 net->src_addr_selected = 0;
3965 netfirst = TAILQ_FIRST(&stcb->asoc.nets);
3966 if (net->ro.ro_rt == NULL) {
3967 /* Since we have no route put it at the back */
3968 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
3969 } else if (netfirst == NULL) {
3970 /* We are the first one in the pool. */
3971 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
3972 } else if (netfirst->ro.ro_rt == NULL) {
3974 * First one has NO route. Place this one ahead of the first
3977 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
3978 } else if (net->ro.ro_rt->rt_ifp != netfirst->ro.ro_rt->rt_ifp) {
3980 * This one has a different interface than the one at the
3981 * top of the list. Place it ahead.
3983 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
3986 * Ok we have the same interface as the first one. Move
3987 * forward until we find either a) one with a NULL route...
3988 * insert ahead of that b) one with a different ifp.. insert
3989 * after that. c) end of the list.. insert at the tail.
3991 struct sctp_nets *netlook;
3994 netlook = TAILQ_NEXT(netfirst, sctp_next);
3995 if (netlook == NULL) {
3996 /* End of the list */
3997 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
3999 } else if (netlook->ro.ro_rt == NULL) {
4000 /* next one has NO route */
4001 TAILQ_INSERT_BEFORE(netfirst, net, sctp_next);
4003 } else if (netlook->ro.ro_rt->rt_ifp != net->ro.ro_rt->rt_ifp) {
4004 TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook,
4010 } while (netlook != NULL);
4013 /* got to have a primary set */
4014 if (stcb->asoc.primary_destination == 0) {
4015 stcb->asoc.primary_destination = net;
4016 } else if ((stcb->asoc.primary_destination->ro.ro_rt == NULL) &&
4018 ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
4019 /* No route to current primary adopt new primary */
4020 stcb->asoc.primary_destination = net;
4022 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, stcb->sctp_ep, stcb,
4024 /* Validate primary is first */
4025 net = TAILQ_FIRST(&stcb->asoc.nets);
4026 if ((net != stcb->asoc.primary_destination) &&
4027 (stcb->asoc.primary_destination)) {
4029 * first one on the list is NOT the primary sctp_cmpaddr()
4030 * is much more efficient if the primary is the first on the
4033 TAILQ_REMOVE(&stcb->asoc.nets,
4034 stcb->asoc.primary_destination, sctp_next);
4035 TAILQ_INSERT_HEAD(&stcb->asoc.nets,
4036 stcb->asoc.primary_destination, sctp_next);
4043 sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
4046 struct sctpasochead *head;
4047 struct sctp_tcb *lstcb;
4049 SCTP_INP_WLOCK(inp);
4051 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
4053 SCTP_INP_WUNLOCK(inp);
4057 * We don't allow assoc id to be 0, this is needed otherwise if the
4058 * id were to wrap we would have issues with some socket options.
4060 if (inp->sctp_associd_counter == 0) {
4061 inp->sctp_associd_counter++;
4063 id = inp->sctp_associd_counter;
4064 inp->sctp_associd_counter++;
4065 lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t) id, 0);
4069 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
4070 LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash);
4071 stcb->asoc.in_asocid_hash = 1;
4072 SCTP_INP_WUNLOCK(inp);
4077 * allocate an association and add it to the endpoint. The caller must be
4078 * careful to add all additional addresses once they are know right away or
4079 * else the assoc will be may experience a blackout scenario.
4082 sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
4083 int *error, uint32_t override_tag, uint32_t vrf_id,
4087 /* note the p argument is only valid in unbound sockets */
4089 struct sctp_tcb *stcb;
4090 struct sctp_association *asoc;
4091 struct sctpasochead *head;
4096 * Assumption made here: Caller has done a
4097 * sctp_findassociation_ep_addr(ep, addr's); to make sure the
4098 * address does not exist already.
4100 if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) {
4101 /* Hit max assoc, sorry no more */
4102 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4106 if (firstaddr == NULL) {
4107 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4111 SCTP_INP_RLOCK(inp);
4112 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
4113 ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) ||
4114 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4116 * If its in the TCP pool, its NOT allowed to create an
4117 * association. The parent listener needs to call
4118 * sctp_aloc_assoc.. or the one-2-many socket. If a peeled
4119 * off, or connected one does this.. its an error.
4121 SCTP_INP_RUNLOCK(inp);
4122 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4126 SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:");
4129 SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr);
4130 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4131 ntohs(((struct sockaddr_in *)firstaddr)->sin_port));
4133 SCTPDBG(SCTP_DEBUG_PCB3, "None\n");
4135 #endif /* SCTP_DEBUG */
4136 if (firstaddr->sa_family == AF_INET) {
4137 struct sockaddr_in *sin;
4139 sin = (struct sockaddr_in *)firstaddr;
4140 if ((sin->sin_port == 0) || (sin->sin_addr.s_addr == 0)) {
4141 /* Invalid address */
4142 SCTP_INP_RUNLOCK(inp);
4143 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4147 rport = sin->sin_port;
4148 } else if (firstaddr->sa_family == AF_INET6) {
4149 struct sockaddr_in6 *sin6;
4151 sin6 = (struct sockaddr_in6 *)firstaddr;
4152 if ((sin6->sin6_port == 0) ||
4153 (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))) {
4154 /* Invalid address */
4155 SCTP_INP_RUNLOCK(inp);
4156 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4160 rport = sin6->sin6_port;
4162 /* not supported family type */
4163 SCTP_INP_RUNLOCK(inp);
4164 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4168 SCTP_INP_RUNLOCK(inp);
4169 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4171 * If you have not performed a bind, then we need to do the
4172 * ephemeral bind for you.
4174 if ((err = sctp_inpcb_bind(inp->sctp_socket,
4175 (struct sockaddr *)NULL,
4176 (struct sctp_ifa *)NULL,
4179 /* bind error, probably perm */
4184 stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb);
4186 /* out of memory? */
4187 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
4191 SCTP_INCR_ASOC_COUNT();
4193 bzero(stcb, sizeof(*stcb));
4196 asoc->assoc_id = sctp_aloc_a_assoc_id(inp, stcb);
4197 SCTP_TCB_LOCK_INIT(stcb);
4198 SCTP_TCB_SEND_LOCK_INIT(stcb);
4199 stcb->rport = rport;
4200 /* setup back pointer's */
4201 stcb->sctp_ep = inp;
4202 stcb->sctp_socket = inp->sctp_socket;
4203 if ((err = sctp_init_asoc(inp, stcb, override_tag, vrf_id))) {
4205 SCTP_TCB_LOCK_DESTROY(stcb);
4206 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4207 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4208 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4209 SCTP_DECR_ASOC_COUNT();
4214 SCTP_INP_INFO_WLOCK();
4215 SCTP_INP_WLOCK(inp);
4216 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
4217 /* inpcb freed while alloc going on */
4218 SCTP_TCB_LOCK_DESTROY(stcb);
4219 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4220 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4221 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4222 SCTP_INP_WUNLOCK(inp);
4223 SCTP_INP_INFO_WUNLOCK();
4224 SCTP_DECR_ASOC_COUNT();
4225 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4229 SCTP_TCB_LOCK(stcb);
4231 /* now that my_vtag is set, add it to the hash */
4232 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))];
4233 /* put it in the bucket in the vtag hash of assoc's for the system */
4234 LIST_INSERT_HEAD(head, stcb, sctp_asocs);
4235 SCTP_INP_INFO_WUNLOCK();
4237 if ((err = sctp_add_remote_addr(stcb, firstaddr, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC))) {
4238 /* failure.. memory error? */
4239 if (asoc->strmout) {
4240 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4241 asoc->strmout = NULL;
4243 if (asoc->mapping_array) {
4244 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4245 asoc->mapping_array = NULL;
4247 if (asoc->nr_mapping_array) {
4248 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4249 asoc->nr_mapping_array = NULL;
4251 SCTP_DECR_ASOC_COUNT();
4252 SCTP_TCB_LOCK_DESTROY(stcb);
4253 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4254 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4255 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4256 SCTP_INP_WUNLOCK(inp);
4257 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4261 /* Init all the timers */
4262 SCTP_OS_TIMER_INIT(&asoc->hb_timer.timer);
4263 SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer);
4264 SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer);
4265 SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer);
4266 SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer);
4267 SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer);
4268 SCTP_OS_TIMER_INIT(&asoc->delayed_event_timer.timer);
4269 SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer);
4271 LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist);
4272 /* now file the port under the hash as well */
4273 if (inp->sctp_tcbhash != NULL) {
4274 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport,
4275 inp->sctp_hashmark)];
4276 LIST_INSERT_HEAD(head, stcb, sctp_tcbhash);
4278 SCTP_INP_WUNLOCK(inp);
4279 SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", stcb);
4285 sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
4287 struct sctp_association *asoc;
4291 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4292 if (net == asoc->primary_destination) {
4294 struct sctp_nets *lnet;
4296 lnet = TAILQ_FIRST(&asoc->nets);
4298 * Mobility adaptation Ideally, if deleted destination is
4299 * the primary, it becomes a fast retransmission trigger by
4300 * the subsequent SET PRIMARY. (by micchie)
4302 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
4303 SCTP_MOBILITY_BASE) ||
4304 sctp_is_mobility_feature_on(stcb->sctp_ep,
4305 SCTP_MOBILITY_FASTHANDOFF)) {
4306 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n");
4307 if (asoc->deleted_primary != NULL) {
4308 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n");
4311 asoc->deleted_primary = net;
4312 atomic_add_int(&net->ref_count, 1);
4313 memset(&net->lastsa, 0, sizeof(net->lastsa));
4314 memset(&net->lastsv, 0, sizeof(net->lastsv));
4315 sctp_mobility_feature_on(stcb->sctp_ep,
4316 SCTP_MOBILITY_PRIM_DELETED);
4317 sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED,
4318 stcb->sctp_ep, stcb, NULL);
4321 /* Try to find a confirmed primary */
4322 asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0);
4324 if (net == asoc->last_data_chunk_from) {
4326 asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets);
4328 if (net == asoc->last_control_chunk_from) {
4330 asoc->last_control_chunk_from = NULL;
4332 sctp_free_remote_addr(net);
4336 * remove a remote endpoint address from an association, it will fail if the
4337 * address does not exist.
4340 sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
4343 * Here we need to remove a remote address. This is quite simple, we
4344 * first find it in the list of address for the association
4345 * (tasoc->asoc.nets) and then if it is there, we do a LIST_REMOVE
4346 * on that item. Note we do not allow it to be removed if there are
4347 * no other addresses.
4349 struct sctp_association *asoc;
4350 struct sctp_nets *net, *nnet;
4354 /* locate the address */
4355 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
4356 if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) {
4359 if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr,
4361 /* we found the guy */
4362 if (asoc->numnets < 2) {
4363 /* Must have at LEAST two remote addresses */
4366 sctp_remove_net(stcb, net);
4376 sctp_delete_from_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4378 struct sctpvtaghead *chain;
4379 struct sctp_tagblock *twait_block;
4383 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4384 if (!LIST_EMPTY(chain)) {
4385 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4386 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4387 if ((twait_block->vtag_block[i].v_tag == tag) &&
4388 (twait_block->vtag_block[i].lport == lport) &&
4389 (twait_block->vtag_block[i].rport == rport)) {
4390 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4391 twait_block->vtag_block[i].v_tag = 0;
4392 twait_block->vtag_block[i].lport = 0;
4393 twait_block->vtag_block[i].rport = 0;
4405 sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4407 struct sctpvtaghead *chain;
4408 struct sctp_tagblock *twait_block;
4412 SCTP_INP_INFO_WLOCK();
4413 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4414 if (!LIST_EMPTY(chain)) {
4415 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4416 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4417 if ((twait_block->vtag_block[i].v_tag == tag) &&
4418 (twait_block->vtag_block[i].lport == lport) &&
4419 (twait_block->vtag_block[i].rport == rport)) {
4428 SCTP_INP_INFO_WUNLOCK();
4434 sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport)
4436 struct sctpvtaghead *chain;
4437 struct sctp_tagblock *twait_block;
4445 (void)SCTP_GETTIME_TIMEVAL(&now);
4446 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4448 if (!LIST_EMPTY(chain)) {
4449 /* Block(s) present, lets find space, and expire on the fly */
4450 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4451 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4452 if ((twait_block->vtag_block[i].v_tag == 0) &&
4454 twait_block->vtag_block[i].tv_sec_at_expire =
4456 twait_block->vtag_block[i].v_tag = tag;
4457 twait_block->vtag_block[i].lport = lport;
4458 twait_block->vtag_block[i].rport = rport;
4460 } else if ((twait_block->vtag_block[i].v_tag) &&
4461 ((long)twait_block->vtag_block[i].tv_sec_at_expire < now.tv_sec)) {
4462 /* Audit expires this guy */
4463 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4464 twait_block->vtag_block[i].v_tag = 0;
4465 twait_block->vtag_block[i].lport = 0;
4466 twait_block->vtag_block[i].rport = 0;
4468 /* Reuse it for my new tag */
4469 twait_block->vtag_block[i].tv_sec_at_expire = now.tv_sec + time;
4470 twait_block->vtag_block[i].v_tag = tag;
4471 twait_block->vtag_block[i].lport = lport;
4472 twait_block->vtag_block[i].rport = rport;
4479 * We only do up to the block where we can
4480 * place our tag for audits
4486 /* Need to add a new block to chain */
4488 SCTP_MALLOC(twait_block, struct sctp_tagblock *,
4489 sizeof(struct sctp_tagblock), SCTP_M_TIMW);
4490 if (twait_block == NULL) {
4492 panic("Can not alloc tagblock");
4496 memset(twait_block, 0, sizeof(struct sctp_tagblock));
4497 LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock);
4498 twait_block->vtag_block[0].tv_sec_at_expire = now.tv_sec + time;
4499 twait_block->vtag_block[0].v_tag = tag;
4500 twait_block->vtag_block[0].lport = lport;
4501 twait_block->vtag_block[0].rport = rport;
4508 * Free the association after un-hashing the remote port. This
4509 * function ALWAYS returns holding NO LOCK on the stcb. It DOES
4510 * expect that the input to this function IS a locked TCB.
4511 * It will return 0, if it did NOT destroy the association (instead
4512 * it unlocks it. It will return NON-zero if it either destroyed the
4513 * association OR the association is already destroyed.
4516 sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
4519 struct sctp_association *asoc;
4520 struct sctp_nets *net, *nnet;
4521 struct sctp_laddr *laddr, *naddr;
4522 struct sctp_tmit_chunk *chk, *nchk;
4523 struct sctp_asconf_addr *aparam, *naparam;
4524 struct sctp_asconf_ack *aack, *naack;
4525 struct sctp_stream_reset_list *strrst, *nstrrst;
4526 struct sctp_queued_to_read *sq, *nsq;
4527 struct sctp_stream_queue_pending *sp, *nsp;
4528 sctp_sharedkey_t *shared_key, *nshared_key;
4531 /* first, lets purge the entry from the hash table. */
4533 #ifdef SCTP_LOG_CLOSING
4534 sctp_log_closing(inp, stcb, 6);
4536 if (stcb->asoc.state == 0) {
4537 #ifdef SCTP_LOG_CLOSING
4538 sctp_log_closing(inp, NULL, 7);
4540 /* there is no asoc, really TSNH :-0 */
4544 if (stcb->freed_from_where == 0) {
4545 /* Only record the first place free happened from */
4546 stcb->freed_from_where = from_location;
4551 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4552 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4553 /* nothing around */
4556 so = inp->sctp_socket;
4559 * We used timer based freeing if a reader or writer is in the way.
4560 * So we first check if we are actually being called from a timer,
4561 * if so we abort early if a reader or writer is still in the way.
4563 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
4564 (from_inpcbfree == SCTP_NORMAL_PROC)) {
4566 * is it the timer driving us? if so are the reader/writers
4569 if (stcb->asoc.refcnt) {
4570 /* nope, reader or writer in the way */
4571 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4572 /* no asoc destroyed */
4573 SCTP_TCB_UNLOCK(stcb);
4574 #ifdef SCTP_LOG_CLOSING
4575 sctp_log_closing(inp, stcb, 8);
4580 /* now clean up any other timers */
4581 (void)SCTP_OS_TIMER_STOP(&asoc->hb_timer.timer);
4582 asoc->hb_timer.self = NULL;
4583 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4584 asoc->dack_timer.self = NULL;
4585 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4587 * For stream reset we don't blast this unless
4588 * it is a str-reset timer, it might be the
4589 * free-asoc timer which we DON'T want to
4592 if (asoc->strreset_timer.type == SCTP_TIMER_TYPE_STRRESET)
4593 asoc->strreset_timer.self = NULL;
4594 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4595 asoc->asconf_timer.self = NULL;
4596 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4597 asoc->autoclose_timer.self = NULL;
4598 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4599 asoc->shut_guard_timer.self = NULL;
4600 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4601 asoc->delayed_event_timer.self = NULL;
4602 /* Mobility adaptation */
4603 (void)SCTP_OS_TIMER_STOP(&asoc->delete_prim_timer.timer);
4604 asoc->delete_prim_timer.self = NULL;
4605 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4606 (void)SCTP_OS_TIMER_STOP(&net->fr_timer.timer);
4607 net->fr_timer.self = NULL;
4608 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4609 net->rxt_timer.self = NULL;
4610 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4611 net->pmtu_timer.self = NULL;
4613 /* Now the read queue needs to be cleaned up (only once) */
4614 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) {
4615 stcb->asoc.state |= SCTP_STATE_ABOUT_TO_BE_FREED;
4616 SCTP_INP_READ_LOCK(inp);
4617 TAILQ_FOREACH(sq, &inp->read_queue, next) {
4618 if (sq->stcb == stcb) {
4619 sq->do_not_ref_stcb = 1;
4620 sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
4622 * If there is no end, there never will be
4625 if (sq->end_added == 0) {
4626 /* Held for PD-API clear that. */
4627 sq->pdapi_aborted = 1;
4628 sq->held_length = 0;
4629 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) {
4631 * Need to add a PD-API
4632 * aborted indication.
4633 * Setting the control_pdapi
4634 * assures that it will be
4635 * added right after this
4640 stcb->asoc.control_pdapi = sq;
4641 strseq = (sq->sinfo_stream << 16) | sq->sinfo_ssn;
4642 sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION,
4644 SCTP_PARTIAL_DELIVERY_ABORTED,
4647 stcb->asoc.control_pdapi = NULL;
4650 /* Add an end to wake them */
4654 SCTP_INP_READ_UNLOCK(inp);
4655 if (stcb->block_entry) {
4656 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET);
4657 stcb->block_entry->error = ECONNRESET;
4658 stcb->block_entry = NULL;
4661 if ((stcb->asoc.refcnt) || (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE)) {
4663 * Someone holds a reference OR the socket is unaccepted
4666 if ((stcb->asoc.refcnt) ||
4667 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4668 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4669 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4670 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4672 SCTP_TCB_UNLOCK(stcb);
4673 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4674 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4675 /* nothing around */
4678 /* Wake any reader/writers */
4679 sctp_sorwakeup(inp, so);
4680 sctp_sowwakeup(inp, so);
4682 #ifdef SCTP_LOG_CLOSING
4683 sctp_log_closing(inp, stcb, 9);
4685 /* no asoc destroyed */
4688 #ifdef SCTP_LOG_CLOSING
4689 sctp_log_closing(inp, stcb, 10);
4692 * When I reach here, no others want to kill the assoc yet.. and I
4693 * own the lock. Now its possible an abort comes in when I do the
4694 * lock exchange below to grab all the locks to do the final take
4695 * out. to prevent this we increment the count, which will start a
4696 * timer and blow out above thus assuring us that we hold exclusive
4697 * killing of the asoc. Note that after getting back the TCB lock we
4698 * will go ahead and increment the counter back up and stop any
4699 * timer a passing stranger may have started :-S
4701 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4702 atomic_add_int(&stcb->asoc.refcnt, 1);
4704 SCTP_TCB_UNLOCK(stcb);
4705 SCTP_INP_INFO_WLOCK();
4706 SCTP_INP_WLOCK(inp);
4707 SCTP_TCB_LOCK(stcb);
4709 /* Double check the GONE flag */
4710 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4711 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4712 /* nothing around */
4715 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
4716 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4718 * For TCP type we need special handling when we are
4719 * connected. We also include the peel'ed off ones to.
4721 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4722 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED;
4723 inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED;
4726 if (so->so_rcv.sb_cc == 0) {
4727 so->so_state &= ~(SS_ISCONNECTING |
4728 SS_ISDISCONNECTING |
4732 socantrcvmore_locked(so);
4733 sctp_sowwakeup(inp, so);
4734 sctp_sorwakeup(inp, so);
4740 * Make it invalid too, that way if its about to run it will abort
4743 /* re-increment the lock */
4744 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4745 atomic_add_int(&stcb->asoc.refcnt, -1);
4747 if (stcb->asoc.refcnt) {
4748 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4749 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4750 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4751 SCTP_INP_INFO_WUNLOCK();
4752 SCTP_INP_WUNLOCK(inp);
4754 SCTP_TCB_UNLOCK(stcb);
4758 if (inp->sctp_tcbhash) {
4759 LIST_REMOVE(stcb, sctp_tcbhash);
4761 if (stcb->asoc.in_asocid_hash) {
4762 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4764 /* Now lets remove it from the list of ALL associations in the EP */
4765 LIST_REMOVE(stcb, sctp_tcblist);
4766 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4767 SCTP_INP_INCR_REF(inp);
4768 SCTP_INP_WUNLOCK(inp);
4770 /* pull from vtag hash */
4771 LIST_REMOVE(stcb, sctp_asocs);
4772 sctp_add_vtag_to_timewait(asoc->my_vtag, SCTP_BASE_SYSCTL(sctp_vtag_time_wait),
4773 inp->sctp_lport, stcb->rport);
4776 * Now restop the timers to be sure this is paranoia at is finest!
4778 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4779 (void)SCTP_OS_TIMER_STOP(&asoc->hb_timer.timer);
4780 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4781 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4782 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4783 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4784 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4785 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4786 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4787 (void)SCTP_OS_TIMER_STOP(&net->fr_timer.timer);
4788 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4789 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4792 asoc->strreset_timer.type = SCTP_TIMER_TYPE_NONE;
4794 * The chunk lists and such SHOULD be empty but we check them just
4797 /* anything on the wheel needs to be removed */
4798 for (i = 0; i < asoc->streamoutcnt; i++) {
4799 struct sctp_stream_out *outs;
4801 outs = &asoc->strmout[i];
4802 /* now clean up any chunks here */
4803 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
4804 TAILQ_REMOVE(&outs->outqueue, sp, next);
4807 /* Still an open socket - report */
4808 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
4809 SCTP_NOTIFY_DATAGRAM_UNSENT,
4810 (void *)sp, SCTP_SO_LOCKED);
4813 sctp_m_freem(sp->data);
4815 sp->tail_mbuf = NULL;
4819 sctp_free_remote_addr(sp->net);
4822 sctp_free_spbufspace(stcb, asoc, sp);
4823 if (sp->holds_key_ref)
4824 sctp_auth_key_release(stcb, sp->auth_keyid);
4825 /* Free the zone stuff */
4826 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_strmoq), sp);
4827 SCTP_DECR_STRMOQ_COUNT();
4828 /* sa_ignore FREED_MEMORY */
4831 /* sa_ignore FREED_MEMORY */
4832 TAILQ_FOREACH_SAFE(strrst, &asoc->resetHead, next_resp, nstrrst) {
4833 TAILQ_REMOVE(&asoc->resetHead, strrst, next_resp);
4834 SCTP_FREE(strrst, SCTP_M_STRESET);
4836 TAILQ_FOREACH_SAFE(sq, &asoc->pending_reply_queue, next, nsq) {
4837 TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
4839 sctp_m_freem(sq->data);
4842 sctp_free_remote_addr(sq->whoFrom);
4845 /* Free the ctl entry */
4846 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
4847 SCTP_DECR_READQ_COUNT();
4848 /* sa_ignore FREED_MEMORY */
4850 TAILQ_FOREACH_SAFE(chk, &asoc->free_chunks, sctp_next, nchk) {
4851 TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next);
4853 sctp_m_freem(chk->data);
4856 if (chk->holds_key_ref)
4857 sctp_auth_key_release(stcb, chk->auth_keyid);
4858 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4859 SCTP_DECR_CHK_COUNT();
4860 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1);
4861 asoc->free_chunk_cnt--;
4862 /* sa_ignore FREED_MEMORY */
4864 /* pending send queue SHOULD be empty */
4865 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
4866 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
4869 /* Still a socket? */
4870 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb,
4871 SCTP_NOTIFY_DATAGRAM_UNSENT, chk, SCTP_SO_LOCKED);
4874 sctp_m_freem(chk->data);
4878 if (chk->holds_key_ref)
4879 sctp_auth_key_release(stcb, chk->auth_keyid);
4881 sctp_free_remote_addr(chk->whoTo);
4884 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4885 SCTP_DECR_CHK_COUNT();
4886 /* sa_ignore FREED_MEMORY */
4888 /* sent queue SHOULD be empty */
4889 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
4890 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
4893 /* Still a socket? */
4894 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb,
4895 SCTP_NOTIFY_DATAGRAM_SENT, chk, SCTP_SO_LOCKED);
4898 sctp_m_freem(chk->data);
4902 if (chk->holds_key_ref)
4903 sctp_auth_key_release(stcb, chk->auth_keyid);
4904 sctp_free_remote_addr(chk->whoTo);
4905 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4906 SCTP_DECR_CHK_COUNT();
4907 /* sa_ignore FREED_MEMORY */
4909 /* control queue MAY not be empty */
4910 TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) {
4911 TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next);
4913 sctp_m_freem(chk->data);
4916 if (chk->holds_key_ref)
4917 sctp_auth_key_release(stcb, chk->auth_keyid);
4918 sctp_free_remote_addr(chk->whoTo);
4919 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4920 SCTP_DECR_CHK_COUNT();
4921 /* sa_ignore FREED_MEMORY */
4923 /* ASCONF queue MAY not be empty */
4924 TAILQ_FOREACH_SAFE(chk, &asoc->asconf_send_queue, sctp_next, nchk) {
4925 TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next);
4927 sctp_m_freem(chk->data);
4930 if (chk->holds_key_ref)
4931 sctp_auth_key_release(stcb, chk->auth_keyid);
4932 sctp_free_remote_addr(chk->whoTo);
4933 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4934 SCTP_DECR_CHK_COUNT();
4935 /* sa_ignore FREED_MEMORY */
4937 TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) {
4938 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
4940 sctp_m_freem(chk->data);
4943 if (chk->holds_key_ref)
4944 sctp_auth_key_release(stcb, chk->auth_keyid);
4945 sctp_free_remote_addr(chk->whoTo);
4946 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4947 SCTP_DECR_CHK_COUNT();
4948 /* sa_ignore FREED_MEMORY */
4951 if (asoc->mapping_array) {
4952 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4953 asoc->mapping_array = NULL;
4955 if (asoc->nr_mapping_array) {
4956 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4957 asoc->nr_mapping_array = NULL;
4959 /* the stream outs */
4960 if (asoc->strmout) {
4961 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4962 asoc->strmout = NULL;
4964 asoc->strm_realoutsize = asoc->streamoutcnt = 0;
4966 struct sctp_queued_to_read *ctl, *nctl;
4968 for (i = 0; i < asoc->streamincnt; i++) {
4969 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[i].inqueue, next, nctl) {
4970 TAILQ_REMOVE(&asoc->strmin[i].inqueue, ctl, next);
4971 sctp_free_remote_addr(ctl->whoFrom);
4973 sctp_m_freem(ctl->data);
4977 * We don't free the address here since all
4978 * the net's were freed above.
4980 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
4981 SCTP_DECR_READQ_COUNT();
4984 SCTP_FREE(asoc->strmin, SCTP_M_STRMI);
4985 asoc->strmin = NULL;
4987 asoc->streamincnt = 0;
4988 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
4990 if (SCTP_BASE_INFO(ipi_count_raddr) == 0) {
4991 panic("no net's left alloc'ed, or list points to itself");
4994 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4995 sctp_free_remote_addr(net);
4997 LIST_FOREACH_SAFE(laddr, &asoc->sctp_restricted_addrs, sctp_nxt_addr, naddr) {
4998 /* sa_ignore FREED_MEMORY */
4999 sctp_remove_laddr(laddr);
5002 /* pending asconf (address) parameters */
5003 TAILQ_FOREACH_SAFE(aparam, &asoc->asconf_queue, next, naparam) {
5004 /* sa_ignore FREED_MEMORY */
5005 TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
5006 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
5008 TAILQ_FOREACH_SAFE(aack, &asoc->asconf_ack_sent, next, naack) {
5009 /* sa_ignore FREED_MEMORY */
5010 TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
5011 if (aack->data != NULL) {
5012 sctp_m_freem(aack->data);
5014 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
5016 /* clean up auth stuff */
5017 if (asoc->local_hmacs)
5018 sctp_free_hmaclist(asoc->local_hmacs);
5019 if (asoc->peer_hmacs)
5020 sctp_free_hmaclist(asoc->peer_hmacs);
5022 if (asoc->local_auth_chunks)
5023 sctp_free_chunklist(asoc->local_auth_chunks);
5024 if (asoc->peer_auth_chunks)
5025 sctp_free_chunklist(asoc->peer_auth_chunks);
5027 sctp_free_authinfo(&asoc->authinfo);
5029 LIST_FOREACH_SAFE(shared_key, &asoc->shared_keys, next, nshared_key) {
5030 LIST_REMOVE(shared_key, next);
5031 sctp_free_sharedkey(shared_key);
5032 /* sa_ignore FREED_MEMORY */
5035 /* Insert new items here :> */
5037 /* Get rid of LOCK */
5038 SCTP_TCB_LOCK_DESTROY(stcb);
5039 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
5040 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5041 SCTP_INP_INFO_WUNLOCK();
5042 SCTP_INP_RLOCK(inp);
5044 #ifdef SCTP_TRACK_FREED_ASOCS
5045 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5046 /* now clean up the tasoc itself */
5047 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5048 SCTP_DECR_ASOC_COUNT();
5050 LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist);
5053 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5054 SCTP_DECR_ASOC_COUNT();
5056 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5057 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5059 * If its NOT the inp_free calling us AND sctp_close
5060 * as been called, we call back...
5062 SCTP_INP_RUNLOCK(inp);
5064 * This will start the kill timer (if we are the
5065 * last one) since we hold an increment yet. But
5066 * this is the only safe way to do this since
5067 * otherwise if the socket closes at the same time
5068 * we are here we might collide in the cleanup.
5070 sctp_inpcb_free(inp,
5071 SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
5072 SCTP_CALLED_DIRECTLY_NOCMPSET);
5073 SCTP_INP_DECR_REF(inp);
5076 /* The socket is still open. */
5077 SCTP_INP_DECR_REF(inp);
5080 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5081 SCTP_INP_RUNLOCK(inp);
5084 /* destroyed the asoc */
5085 #ifdef SCTP_LOG_CLOSING
5086 sctp_log_closing(inp, NULL, 11);
5094 * determine if a destination is "reachable" based upon the addresses bound
5095 * to the current endpoint (e.g. only v4 or v6 currently bound)
5098 * FIX: if we allow assoc-level bindx(), then this needs to be fixed to use
5099 * assoc level v4/v6 flags, as the assoc *may* not have the same address
5100 * types bound as its endpoint
5103 sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
5105 struct sctp_inpcb *inp;
5109 * No locks here, the TCB, in all cases is already locked and an
5110 * assoc is up. There is either a INP lock by the caller applied (in
5111 * asconf case when deleting an address) or NOT in the HB case,
5112 * however if HB then the INP increment is up and the INP will not
5113 * be removed (on top of the fact that we have a TCB lock). So we
5114 * only want to read the sctp_flags, which is either bound-all or
5115 * not.. no protection needed since once an assoc is up you can't be
5116 * changing your binding.
5118 inp = stcb->sctp_ep;
5119 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5120 /* if bound all, destination is not restricted */
5122 * RRS: Question during lock work: Is this correct? If you
5123 * are bound-all you still might need to obey the V4--V6
5124 * flags??? IMO this bound-all stuff needs to be removed!
5128 /* NOTE: all "scope" checks are done when local addresses are added */
5129 if (destaddr->sa_family == AF_INET6) {
5130 answer = inp->ip_inp.inp.inp_vflag & INP_IPV6;
5131 } else if (destaddr->sa_family == AF_INET) {
5132 answer = inp->ip_inp.inp.inp_vflag & INP_IPV4;
5134 /* invalid family, so it's unreachable */
5141 * update the inp_vflags on an endpoint
5144 sctp_update_ep_vflag(struct sctp_inpcb *inp)
5146 struct sctp_laddr *laddr;
5148 /* first clear the flag */
5149 inp->ip_inp.inp.inp_vflag = 0;
5150 /* set the flag based on addresses on the ep list */
5151 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5152 if (laddr->ifa == NULL) {
5153 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
5157 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
5160 if (laddr->ifa->address.sa.sa_family == AF_INET6) {
5161 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5162 } else if (laddr->ifa->address.sa.sa_family == AF_INET) {
5163 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5169 * Add the address to the endpoint local address list There is nothing to be
5170 * done if we are bound to all addresses
5173 sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
5175 struct sctp_laddr *laddr;
5180 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5181 /* You are already bound to all. You have it already */
5184 if (ifa->address.sa.sa_family == AF_INET6) {
5185 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5186 /* Can't bind a non-useable addr. */
5190 /* first, is it already present? */
5191 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5192 if (laddr->ifa == ifa) {
5199 /* Not in the ep list */
5200 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action);
5204 /* update inp_vflag flags */
5205 if (ifa->address.sa.sa_family == AF_INET6) {
5206 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5207 } else if (ifa->address.sa.sa_family == AF_INET) {
5208 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5216 * select a new (hopefully reachable) destination net (should only be used
5217 * when we deleted an ep addr that is the only usable source address to reach
5218 * the destination net)
5221 sctp_select_primary_destination(struct sctp_tcb *stcb)
5223 struct sctp_nets *net;
5225 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5226 /* for now, we'll just pick the first reachable one we find */
5227 if (net->dest_state & SCTP_ADDR_UNCONFIRMED)
5229 if (sctp_destination_is_reachable(stcb,
5230 (struct sockaddr *)&net->ro._l_addr)) {
5231 /* found a reachable destination */
5232 stcb->asoc.primary_destination = net;
5235 /* I can't there from here! ...we're gonna die shortly... */
5240 * Delete the address from the endpoint local address list There is nothing
5241 * to be done if we are bound to all addresses
5244 sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa)
5246 struct sctp_laddr *laddr;
5250 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5251 /* You are already bound to all. You have it already */
5254 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5255 if (laddr->ifa == ifa) {
5260 if (fnd && (inp->laddr_count < 2)) {
5261 /* can't delete unless there are at LEAST 2 addresses */
5266 * clean up any use of this address go through our
5267 * associations and clear any last_used_address that match
5268 * this one for each assoc, see if a new primary_destination
5271 struct sctp_tcb *stcb;
5273 /* clean up "next_addr_touse" */
5274 if (inp->next_addr_touse == laddr)
5275 /* delete this address */
5276 inp->next_addr_touse = NULL;
5278 /* clean up "last_used_address" */
5279 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5280 struct sctp_nets *net;
5282 SCTP_TCB_LOCK(stcb);
5283 if (stcb->asoc.last_used_address == laddr)
5284 /* delete this address */
5285 stcb->asoc.last_used_address = NULL;
5287 * Now spin through all the nets and purge any ref
5290 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5291 if (net->ro._s_addr &&
5292 (net->ro._s_addr->ifa == laddr->ifa)) {
5293 /* Yep, purge src address selected */
5296 /* delete this address if cached */
5300 net->ro.ro_rt = NULL;
5302 sctp_free_ifa(net->ro._s_addr);
5303 net->ro._s_addr = NULL;
5304 net->src_addr_selected = 0;
5307 SCTP_TCB_UNLOCK(stcb);
5308 } /* for each tcb */
5309 /* remove it from the ep list */
5310 sctp_remove_laddr(laddr);
5312 /* update inp_vflag flags */
5313 sctp_update_ep_vflag(inp);
5319 * Add the address to the TCB local address restricted list.
5320 * This is a "pending" address list (eg. addresses waiting for an
5321 * ASCONF-ACK response) and cannot be used as a valid source address.
5324 sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5326 struct sctp_inpcb *inp;
5327 struct sctp_laddr *laddr;
5328 struct sctpladdr *list;
5331 * Assumes TCB is locked.. and possibly the INP. May need to
5332 * confirm/fix that if we need it and is not the case.
5334 list = &stcb->asoc.sctp_restricted_addrs;
5336 inp = stcb->sctp_ep;
5337 if (ifa->address.sa.sa_family == AF_INET6) {
5338 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5339 /* Can't bind a non-existent addr. */
5343 /* does the address already exist? */
5344 LIST_FOREACH(laddr, list, sctp_nxt_addr) {
5345 if (laddr->ifa == ifa) {
5350 /* add to the list */
5351 (void)sctp_insert_laddr(list, ifa, 0);
5356 * insert an laddr entry with the given ifa for the desired list
5359 sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
5361 struct sctp_laddr *laddr;
5363 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
5364 if (laddr == NULL) {
5365 /* out of memory? */
5366 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
5369 SCTP_INCR_LADDR_COUNT();
5370 bzero(laddr, sizeof(*laddr));
5371 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
5373 laddr->action = act;
5374 atomic_add_int(&ifa->refcount, 1);
5376 LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr);
5382 * Remove an laddr entry from the local address list (on an assoc)
5385 sctp_remove_laddr(struct sctp_laddr *laddr)
5388 /* remove from the list */
5389 LIST_REMOVE(laddr, sctp_nxt_addr);
5390 sctp_free_ifa(laddr->ifa);
5391 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr);
5392 SCTP_DECR_LADDR_COUNT();
5396 * Remove a local address from the TCB local address restricted list
5399 sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5401 struct sctp_inpcb *inp;
5402 struct sctp_laddr *laddr;
5405 * This is called by asconf work. It is assumed that a) The TCB is
5406 * locked and b) The INP is locked. This is true in as much as I can
5407 * trace through the entry asconf code where I did these locks.
5408 * Again, the ASCONF code is a bit different in that it does lock
5409 * the INP during its work often times. This must be since we don't
5410 * want other proc's looking up things while what they are looking
5411 * up is changing :-D
5414 inp = stcb->sctp_ep;
5415 /* if subset bound and don't allow ASCONF's, can't delete last */
5416 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
5417 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
5418 if (stcb->sctp_ep->laddr_count < 2) {
5419 /* can't delete last address */
5423 LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
5424 /* remove the address if it exists */
5425 if (laddr->ifa == NULL)
5427 if (laddr->ifa == ifa) {
5428 sctp_remove_laddr(laddr);
5433 /* address not found! */
5438 * Temporarily remove for __APPLE__ until we use the Tiger equivalents
5441 static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;
5442 static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR;
5446 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5447 struct sctp_mcore_ctrl *sctp_mcore_workers = NULL;
5448 int *sctp_cpuarry = NULL;
5450 sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use)
5452 /* Queue a packet to a processor for the specified core */
5453 struct sctp_mcore_queue *qent;
5454 struct sctp_mcore_ctrl *wkq;
5457 if (sctp_mcore_workers == NULL) {
5458 /* Something went way bad during setup */
5459 sctp_input_with_port(m, off, 0);
5462 SCTP_MALLOC(qent, struct sctp_mcore_queue *,
5463 (sizeof(struct sctp_mcore_queue)),
5466 /* This is trouble */
5467 sctp_input_with_port(m, off, 0);
5474 wkq = &sctp_mcore_workers[cpu_to_use];
5475 SCTP_MCORE_QLOCK(wkq);
5477 TAILQ_INSERT_TAIL(&wkq->que, qent, next);
5478 if (wkq->running == 0) {
5481 SCTP_MCORE_QUNLOCK(wkq);
5483 wakeup(&wkq->running);
5488 sctp_mcore_thread(void *arg)
5491 struct sctp_mcore_ctrl *wkq;
5492 struct sctp_mcore_queue *qent;
5494 wkq = (struct sctp_mcore_ctrl *)arg;
5498 /* Wait for first tickle */
5499 SCTP_MCORE_LOCK(wkq);
5501 msleep(&wkq->running,
5503 0, "wait for pkt", 0);
5504 SCTP_MCORE_UNLOCK(wkq);
5506 /* Bind to our cpu */
5507 thread_lock(curthread);
5508 sched_bind(curthread, wkq->cpuid);
5509 thread_unlock(curthread);
5511 /* Now lets start working */
5512 SCTP_MCORE_LOCK(wkq);
5513 /* Now grab lock and go */
5515 SCTP_MCORE_QLOCK(wkq);
5518 qent = TAILQ_FIRST(&wkq->que);
5520 TAILQ_REMOVE(&wkq->que, qent, next);
5521 SCTP_MCORE_QUNLOCK(wkq);
5522 CURVNET_SET(qent->vn);
5526 SCTP_FREE(qent, SCTP_M_MCORE);
5528 sctp_input_with_port(m, off, 0);
5530 printf("V6 not yet supported\n");
5534 SCTP_MCORE_QLOCK(wkq);
5537 if (!TAILQ_EMPTY(&wkq->que)) {
5540 SCTP_MCORE_QUNLOCK(wkq);
5541 msleep(&wkq->running,
5543 0, "wait for pkt", 0);
5548 sctp_startup_mcore_threads(void)
5555 if (sctp_mcore_workers != NULL) {
5557 * Already been here in some previous vnet?
5561 SCTP_MALLOC(sctp_mcore_workers, struct sctp_mcore_ctrl *,
5562 ((mp_maxid + 1) * sizeof(struct sctp_mcore_ctrl)),
5564 if (sctp_mcore_workers == NULL) {
5568 memset(sctp_mcore_workers, 0, ((mp_maxid + 1) *
5569 sizeof(struct sctp_mcore_ctrl)));
5570 /* Init the structures */
5571 for (i = 0; i <= mp_maxid; i++) {
5572 TAILQ_INIT(&sctp_mcore_workers[i].que);
5573 SCTP_MCORE_LOCK_INIT(&sctp_mcore_workers[i]);
5574 SCTP_MCORE_QLOCK_INIT(&sctp_mcore_workers[i]);
5575 sctp_mcore_workers[i].cpuid = i;
5577 if (sctp_cpuarry == NULL) {
5578 SCTP_MALLOC(sctp_cpuarry, int *,
5579 (mp_ncpus * sizeof(int)),
5583 sctp_cpuarry[i] = cpu;
5587 /* Now start them all */
5589 (void)kproc_create(sctp_mcore_thread,
5590 (void *)&sctp_mcore_workers[cpu],
5591 &sctp_mcore_workers[cpu].thread_proc,
5606 * SCTP initialization for the PCB structures should be called by
5607 * the sctp_init() funciton.
5612 if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) {
5613 /* error I was called twice */
5616 SCTP_BASE_VAR(sctp_pcb_initialized) = 1;
5618 #if defined(SCTP_LOCAL_TRACE_BUF)
5619 bzero(&SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));
5621 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5622 SCTP_MALLOC(SCTP_BASE_STATS, struct sctpstat *,
5623 ((mp_maxid + 1) * sizeof(struct sctpstat)),
5626 (void)SCTP_GETTIME_TIMEVAL(&tv);
5627 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5628 bzero(SCTP_BASE_STATS, (sizeof(struct sctpstat) * (mp_maxid + 1)));
5629 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t) tv.tv_sec;
5630 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t) tv.tv_usec;
5632 bzero(&SCTP_BASE_STATS, sizeof(struct sctpstat));
5633 SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t) tv.tv_sec;
5634 SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t) tv.tv_usec;
5636 /* init the empty list of (All) Endpoints */
5637 LIST_INIT(&SCTP_BASE_INFO(listhead));
5640 /* init the hash table of endpoints */
5641 TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize));
5642 TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize));
5643 TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale));
5644 SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31),
5645 &SCTP_BASE_INFO(hashasocmark));
5646 SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5647 &SCTP_BASE_INFO(hashmark));
5648 SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5649 &SCTP_BASE_INFO(hashtcpmark));
5650 SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize);
5653 SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH,
5654 &SCTP_BASE_INFO(hashvrfmark));
5656 SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE,
5657 &SCTP_BASE_INFO(vrf_ifn_hashmark));
5658 /* init the zones */
5660 * FIX ME: Should check for NULL returns, but if it does fail we are
5661 * doomed to panic anyways... add later maybe.
5663 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep",
5664 sizeof(struct sctp_inpcb), maxsockets);
5666 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc",
5667 sizeof(struct sctp_tcb), sctp_max_number_of_assoc);
5669 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr",
5670 sizeof(struct sctp_laddr),
5671 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5673 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr",
5674 sizeof(struct sctp_nets),
5675 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5677 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk",
5678 sizeof(struct sctp_tmit_chunk),
5679 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5681 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq",
5682 sizeof(struct sctp_queued_to_read),
5683 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5685 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out",
5686 sizeof(struct sctp_stream_queue_pending),
5687 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5689 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf",
5690 sizeof(struct sctp_asconf),
5691 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5693 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack",
5694 sizeof(struct sctp_asconf_ack),
5695 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5698 /* Master Lock INIT for info structure */
5699 SCTP_INP_INFO_LOCK_INIT();
5700 SCTP_STATLOG_INIT_LOCK();
5702 SCTP_IPI_COUNT_INIT();
5703 SCTP_IPI_ADDR_INIT();
5704 #ifdef SCTP_PACKET_LOGGING
5705 SCTP_IP_PKTLOG_INIT();
5707 LIST_INIT(&SCTP_BASE_INFO(addr_wq));
5709 SCTP_WQ_ADDR_INIT();
5710 /* not sure if we need all the counts */
5711 SCTP_BASE_INFO(ipi_count_ep) = 0;
5712 /* assoc/tcb zone info */
5713 SCTP_BASE_INFO(ipi_count_asoc) = 0;
5714 /* local addrlist zone info */
5715 SCTP_BASE_INFO(ipi_count_laddr) = 0;
5716 /* remote addrlist zone info */
5717 SCTP_BASE_INFO(ipi_count_raddr) = 0;
5719 SCTP_BASE_INFO(ipi_count_chunk) = 0;
5721 /* socket queue zone info */
5722 SCTP_BASE_INFO(ipi_count_readq) = 0;
5724 /* stream out queue cont */
5725 SCTP_BASE_INFO(ipi_count_strmoq) = 0;
5727 SCTP_BASE_INFO(ipi_free_strmoq) = 0;
5728 SCTP_BASE_INFO(ipi_free_chunks) = 0;
5730 SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer));
5732 /* Init the TIMEWAIT list */
5733 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5734 LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]);
5737 sctp_startup_iterator();
5739 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5740 sctp_startup_mcore_threads();
5744 * INIT the default VRF which for BSD is the only one, other O/S's
5745 * may have more. But initially they must start with one and then
5746 * add the VRF's as addresses are added.
5748 sctp_init_vrf_list(SCTP_DEFAULT_VRF);
5753 * Assumes that the SCTP_BASE_INFO() lock is NOT held.
5756 sctp_pcb_finish(void)
5758 struct sctp_vrflist *vrf_bucket;
5759 struct sctp_vrf *vrf, *nvrf;
5760 struct sctp_ifn *ifn, *nifn;
5761 struct sctp_ifa *ifa, *nifa;
5762 struct sctpvtaghead *chain;
5763 struct sctp_tagblock *twait_block, *prev_twait_block;
5764 struct sctp_laddr *wi, *nwi;
5768 * Free BSD the it thread never exits but we do clean up. The only
5769 * way freebsd reaches here if we have VRF's but we still add the
5770 * ifdef to make it compile on old versions.
5773 struct sctp_iterator *it, *nit;
5775 SCTP_IPI_ITERATOR_WQ_LOCK();
5776 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
5777 if (it->vn != curvnet) {
5780 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
5781 if (it->function_atend != NULL) {
5782 (*it->function_atend) (it->pointer, it->val);
5784 SCTP_FREE(it, SCTP_M_ITER);
5786 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5787 SCTP_ITERATOR_LOCK();
5788 if ((sctp_it_ctl.cur_it) &&
5789 (sctp_it_ctl.cur_it->vn == curvnet)) {
5790 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
5792 SCTP_ITERATOR_UNLOCK();
5795 SCTP_OS_TIMER_STOP(&SCTP_BASE_INFO(addr_wq_timer.timer));
5796 SCTP_WQ_ADDR_LOCK();
5797 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
5798 LIST_REMOVE(wi, sctp_nxt_addr);
5799 SCTP_DECR_LADDR_COUNT();
5800 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi);
5802 SCTP_WQ_ADDR_UNLOCK();
5805 * free the vrf/ifn/ifa lists and hashes (be sure address monitor is
5808 vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))];
5809 LIST_FOREACH_SAFE(vrf, vrf_bucket, next_vrf, nvrf) {
5810 LIST_FOREACH_SAFE(ifn, &vrf->ifnlist, next_ifn, nifn) {
5811 LIST_FOREACH_SAFE(ifa, &ifn->ifalist, next_ifa, nifa) {
5813 LIST_REMOVE(ifa, next_bucket);
5814 LIST_REMOVE(ifa, next_ifa);
5815 SCTP_FREE(ifa, SCTP_M_IFA);
5818 LIST_REMOVE(ifn, next_bucket);
5819 LIST_REMOVE(ifn, next_ifn);
5820 SCTP_FREE(ifn, SCTP_M_IFN);
5822 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
5824 LIST_REMOVE(vrf, next_vrf);
5825 SCTP_FREE(vrf, SCTP_M_VRF);
5827 /* free the vrf hashes */
5828 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark));
5829 SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark));
5832 * free the TIMEWAIT list elements malloc'd in the function
5833 * sctp_add_vtag_to_timewait()...
5835 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5836 chain = &SCTP_BASE_INFO(vtag_timewait)[i];
5837 if (!LIST_EMPTY(chain)) {
5838 prev_twait_block = NULL;
5839 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
5840 if (prev_twait_block) {
5841 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
5843 prev_twait_block = twait_block;
5845 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
5849 /* free the locks and mutexes */
5850 #ifdef SCTP_PACKET_LOGGING
5851 SCTP_IP_PKTLOG_DESTROY();
5853 SCTP_IPI_ADDR_DESTROY();
5854 SCTP_STATLOG_DESTROY();
5855 SCTP_INP_INFO_LOCK_DESTROY();
5857 SCTP_WQ_ADDR_DESTROY();
5859 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep));
5860 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc));
5861 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr));
5862 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net));
5863 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk));
5864 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq));
5865 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq));
5866 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf));
5867 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack));
5868 /* Get rid of other stuff to */
5869 if (SCTP_BASE_INFO(sctp_asochash) != NULL)
5870 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark));
5871 if (SCTP_BASE_INFO(sctp_ephash) != NULL)
5872 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark));
5873 if (SCTP_BASE_INFO(sctp_tcpephash) != NULL)
5874 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark));
5875 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5876 SCTP_FREE(SCTP_BASE_STATS, SCTP_M_MCORE);
5882 sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m,
5883 int iphlen, int offset, int limit, struct sctphdr *sh,
5884 struct sockaddr *altsa)
5887 * grub through the INIT pulling addresses and loading them to the
5888 * nets structure in the asoc. The from address in the mbuf should
5889 * also be loaded (if it is not already). This routine can be called
5890 * with either INIT or INIT-ACK's as long as the m points to the IP
5891 * packet and the offset points to the beginning of the parameters.
5893 struct sctp_inpcb *inp, *l_inp;
5894 struct sctp_nets *net, *nnet, *net_tmp;
5896 struct sctp_paramhdr *phdr, parm_buf;
5897 struct sctp_tcb *stcb_tmp;
5898 uint16_t ptype, plen;
5899 struct sockaddr *sa;
5900 struct sockaddr_storage dest_store;
5901 struct sockaddr *local_sa = (struct sockaddr *)&dest_store;
5902 struct sockaddr_in sin;
5903 struct sockaddr_in6 sin6;
5904 uint8_t random_store[SCTP_PARAM_BUFFER_SIZE];
5905 struct sctp_auth_random *p_random = NULL;
5906 uint16_t random_len = 0;
5907 uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE];
5908 struct sctp_auth_hmac_algo *hmacs = NULL;
5909 uint16_t hmacs_len = 0;
5910 uint8_t saw_asconf = 0;
5911 uint8_t saw_asconf_ack = 0;
5912 uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE];
5913 struct sctp_auth_chunk_list *chunks = NULL;
5914 uint16_t num_chunks = 0;
5915 sctp_key_t *new_key;
5917 int got_random = 0, got_hmacs = 0, got_chklist = 0;
5918 uint8_t ecn_allowed;
5920 /* First get the destination address setup too. */
5921 memset(&sin, 0, sizeof(sin));
5922 memset(&sin6, 0, sizeof(sin6));
5924 sin.sin_family = AF_INET;
5925 sin.sin_len = sizeof(sin);
5926 sin.sin_port = stcb->rport;
5928 sin6.sin6_family = AF_INET6;
5929 sin6.sin6_len = sizeof(struct sockaddr_in6);
5930 sin6.sin6_port = stcb->rport;
5931 if (altsa == NULL) {
5932 iph = mtod(m, struct ip *);
5933 switch (iph->ip_v) {
5937 struct sockaddr_in *sin_2;
5939 sin_2 = (struct sockaddr_in *)(local_sa);
5940 memset(sin_2, 0, sizeof(sin));
5941 sin_2->sin_family = AF_INET;
5942 sin_2->sin_len = sizeof(sin);
5943 sin_2->sin_port = sh->dest_port;
5944 sin_2->sin_addr.s_addr = iph->ip_dst.s_addr;
5945 sin.sin_addr = iph->ip_src;
5946 sa = (struct sockaddr *)&sin;
5950 case IPV6_VERSION >> 4:
5953 struct ip6_hdr *ip6;
5954 struct sockaddr_in6 *sin6_2;
5956 ip6 = mtod(m, struct ip6_hdr *);
5957 sin6_2 = (struct sockaddr_in6 *)(local_sa);
5958 memset(sin6_2, 0, sizeof(sin6));
5959 sin6_2->sin6_family = AF_INET6;
5960 sin6_2->sin6_len = sizeof(struct sockaddr_in6);
5961 sin6_2->sin6_port = sh->dest_port;
5962 sin6.sin6_addr = ip6->ip6_src;
5963 sa = (struct sockaddr *)&sin6;
5973 * For cookies we use the src address NOT from the packet
5974 * but from the original INIT
5978 /* Turn off ECN until we get through all params */
5980 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5981 /* mark all addresses that we have currently on the list */
5982 net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC;
5984 /* does the source address already exist? if so skip it */
5985 l_inp = inp = stcb->sctp_ep;
5987 atomic_add_int(&stcb->asoc.refcnt, 1);
5988 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, local_sa, stcb);
5989 atomic_add_int(&stcb->asoc.refcnt, -1);
5991 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) {
5992 /* we must add the source address */
5993 /* no scope set here since we have a tcb already. */
5994 if ((sa->sa_family == AF_INET) &&
5995 (stcb->asoc.ipv4_addr_legal)) {
5996 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) {
5999 } else if ((sa->sa_family == AF_INET6) &&
6000 (stcb->asoc.ipv6_addr_legal)) {
6001 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
6006 if (net_tmp != NULL && stcb_tmp == stcb) {
6007 net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC;
6008 } else if (stcb_tmp != stcb) {
6009 /* It belongs to another association? */
6011 SCTP_TCB_UNLOCK(stcb_tmp);
6015 if (stcb->asoc.state == 0) {
6016 /* the assoc was freed? */
6020 * peer must explicitly turn this on. This may have been initialized
6021 * to be "on" in order to allow local addr changes while INIT's are
6024 stcb->asoc.peer_supports_asconf = 0;
6025 /* now we must go through each of the params. */
6026 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
6028 ptype = ntohs(phdr->param_type);
6029 plen = ntohs(phdr->param_length);
6031 * printf("ptype => %0x, plen => %d\n", (uint32_t)ptype,
6034 if (offset + plen > limit) {
6040 if (ptype == SCTP_IPV4_ADDRESS) {
6041 if (stcb->asoc.ipv4_addr_legal) {
6042 struct sctp_ipv4addr_param *p4, p4_buf;
6044 /* ok get the v4 address and check/add */
6045 phdr = sctp_get_next_param(m, offset,
6046 (struct sctp_paramhdr *)&p4_buf,
6048 if (plen != sizeof(struct sctp_ipv4addr_param) ||
6052 p4 = (struct sctp_ipv4addr_param *)phdr;
6053 sin.sin_addr.s_addr = p4->addr;
6054 if (IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) {
6055 /* Skip multi-cast addresses */
6058 if ((sin.sin_addr.s_addr == INADDR_BROADCAST) ||
6059 (sin.sin_addr.s_addr == INADDR_ANY)) {
6062 sa = (struct sockaddr *)&sin;
6063 inp = stcb->sctp_ep;
6064 atomic_add_int(&stcb->asoc.refcnt, 1);
6065 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6067 atomic_add_int(&stcb->asoc.refcnt, -1);
6069 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) ||
6071 /* we must add the source address */
6073 * no scope set since we have a tcb
6078 * we must validate the state again
6082 if (stcb->asoc.state == 0) {
6083 /* the assoc was freed? */
6086 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) {
6089 } else if (stcb_tmp == stcb) {
6090 if (stcb->asoc.state == 0) {
6091 /* the assoc was freed? */
6097 ~SCTP_ADDR_NOT_IN_ASSOC;
6101 * strange, address is in another
6102 * assoc? straighten out locks.
6105 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6110 sctp_abort_an_association(stcb_tmp->sctp_ep,
6111 stcb_tmp, 1, NULL, 0);
6114 SCTP_TCB_UNLOCK(stcb_tmp);
6116 if (stcb->asoc.state == 0) {
6117 /* the assoc was freed? */
6123 } else if (ptype == SCTP_IPV6_ADDRESS) {
6124 if (stcb->asoc.ipv6_addr_legal) {
6125 /* ok get the v6 address and check/add */
6126 struct sctp_ipv6addr_param *p6, p6_buf;
6128 phdr = sctp_get_next_param(m, offset,
6129 (struct sctp_paramhdr *)&p6_buf,
6131 if (plen != sizeof(struct sctp_ipv6addr_param) ||
6135 p6 = (struct sctp_ipv6addr_param *)phdr;
6136 memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
6138 if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) {
6139 /* Skip multi-cast addresses */
6142 if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) {
6144 * Link local make no sense without
6149 sa = (struct sockaddr *)&sin6;
6150 inp = stcb->sctp_ep;
6151 atomic_add_int(&stcb->asoc.refcnt, 1);
6152 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6154 atomic_add_int(&stcb->asoc.refcnt, -1);
6155 if (stcb_tmp == NULL &&
6156 (inp == stcb->sctp_ep || inp == NULL)) {
6158 * we must validate the state again
6162 if (stcb->asoc.state == 0) {
6163 /* the assoc was freed? */
6167 * we must add the address, no scope
6170 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) {
6173 } else if (stcb_tmp == stcb) {
6175 * we must validate the state again
6178 if (stcb->asoc.state == 0) {
6179 /* the assoc was freed? */
6185 ~SCTP_ADDR_NOT_IN_ASSOC;
6189 * strange, address is in another
6190 * assoc? straighten out locks.
6193 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6198 sctp_abort_an_association(stcb_tmp->sctp_ep,
6199 stcb_tmp, 1, NULL, 0);
6202 SCTP_TCB_UNLOCK(stcb_tmp);
6204 if (stcb->asoc.state == 0) {
6205 /* the assoc was freed? */
6211 } else if (ptype == SCTP_ECN_CAPABLE) {
6213 } else if (ptype == SCTP_ULP_ADAPTATION) {
6214 if (stcb->asoc.state != SCTP_STATE_OPEN) {
6215 struct sctp_adaptation_layer_indication ai,
6218 phdr = sctp_get_next_param(m, offset,
6219 (struct sctp_paramhdr *)&ai, sizeof(ai));
6220 aip = (struct sctp_adaptation_layer_indication *)phdr;
6222 stcb->asoc.peers_adaptation = ntohl(aip->indication);
6223 stcb->asoc.adaptation_needed = 1;
6226 } else if (ptype == SCTP_SET_PRIM_ADDR) {
6227 struct sctp_asconf_addr_param lstore, *fee;
6228 struct sctp_asconf_addrv4_param *fii;
6230 struct sockaddr *lsa = NULL;
6232 stcb->asoc.peer_supports_asconf = 1;
6233 if (plen > sizeof(lstore)) {
6236 phdr = sctp_get_next_param(m, offset,
6237 (struct sctp_paramhdr *)&lstore,
6238 min(plen, sizeof(lstore)));
6242 fee = (struct sctp_asconf_addr_param *)phdr;
6243 lptype = ntohs(fee->addrp.ph.param_type);
6244 if (lptype == SCTP_IPV4_ADDRESS) {
6246 sizeof(struct sctp_asconf_addrv4_param)) {
6247 SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n",
6248 (int)sizeof(struct sctp_asconf_addrv4_param),
6251 fii = (struct sctp_asconf_addrv4_param *)fee;
6252 sin.sin_addr.s_addr = fii->addrp.addr;
6253 lsa = (struct sockaddr *)&sin;
6255 } else if (lptype == SCTP_IPV6_ADDRESS) {
6257 sizeof(struct sctp_asconf_addr_param)) {
6258 SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n",
6259 (int)sizeof(struct sctp_asconf_addr_param),
6262 memcpy(sin6.sin6_addr.s6_addr,
6264 sizeof(fee->addrp.addr));
6265 lsa = (struct sockaddr *)&sin6;
6269 (void)sctp_set_primary_addr(stcb, sa, NULL);
6271 } else if (ptype == SCTP_HAS_NAT_SUPPORT) {
6272 stcb->asoc.peer_supports_nat = 1;
6273 } else if (ptype == SCTP_PRSCTP_SUPPORTED) {
6274 /* Peer supports pr-sctp */
6275 stcb->asoc.peer_supports_prsctp = 1;
6276 } else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) {
6277 /* A supported extension chunk */
6278 struct sctp_supported_chunk_types_param *pr_supported;
6279 uint8_t local_store[SCTP_PARAM_BUFFER_SIZE];
6282 phdr = sctp_get_next_param(m, offset,
6283 (struct sctp_paramhdr *)&local_store, min(sizeof(local_store), plen));
6287 stcb->asoc.peer_supports_asconf = 0;
6288 stcb->asoc.peer_supports_prsctp = 0;
6289 stcb->asoc.peer_supports_pktdrop = 0;
6290 stcb->asoc.peer_supports_strreset = 0;
6291 stcb->asoc.peer_supports_nr_sack = 0;
6292 stcb->asoc.peer_supports_auth = 0;
6293 pr_supported = (struct sctp_supported_chunk_types_param *)phdr;
6294 num_ent = plen - sizeof(struct sctp_paramhdr);
6295 for (i = 0; i < num_ent; i++) {
6296 switch (pr_supported->chunk_types[i]) {
6298 case SCTP_ASCONF_ACK:
6299 stcb->asoc.peer_supports_asconf = 1;
6301 case SCTP_FORWARD_CUM_TSN:
6302 stcb->asoc.peer_supports_prsctp = 1;
6304 case SCTP_PACKET_DROPPED:
6305 stcb->asoc.peer_supports_pktdrop = 1;
6307 case SCTP_NR_SELECTIVE_ACK:
6308 stcb->asoc.peer_supports_nr_sack = 1;
6310 case SCTP_STREAM_RESET:
6311 stcb->asoc.peer_supports_strreset = 1;
6313 case SCTP_AUTHENTICATION:
6314 stcb->asoc.peer_supports_auth = 1;
6317 /* one I have not learned yet */
6322 } else if (ptype == SCTP_RANDOM) {
6323 if (plen > sizeof(random_store))
6326 /* already processed a RANDOM */
6329 phdr = sctp_get_next_param(m, offset,
6330 (struct sctp_paramhdr *)random_store,
6331 min(sizeof(random_store), plen));
6334 p_random = (struct sctp_auth_random *)phdr;
6335 random_len = plen - sizeof(*p_random);
6336 /* enforce the random length */
6337 if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) {
6338 SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n");
6342 } else if (ptype == SCTP_HMAC_LIST) {
6346 if (plen > sizeof(hmacs_store))
6349 /* already processed a HMAC list */
6352 phdr = sctp_get_next_param(m, offset,
6353 (struct sctp_paramhdr *)hmacs_store,
6354 min(plen, sizeof(hmacs_store)));
6357 hmacs = (struct sctp_auth_hmac_algo *)phdr;
6358 hmacs_len = plen - sizeof(*hmacs);
6359 num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]);
6360 /* validate the hmac list */
6361 if (sctp_verify_hmac_param(hmacs, num_hmacs)) {
6364 if (stcb->asoc.peer_hmacs != NULL)
6365 sctp_free_hmaclist(stcb->asoc.peer_hmacs);
6366 stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs);
6367 if (stcb->asoc.peer_hmacs != NULL) {
6368 for (i = 0; i < num_hmacs; i++) {
6369 (void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs,
6370 ntohs(hmacs->hmac_ids[i]));
6374 } else if (ptype == SCTP_CHUNK_LIST) {
6377 if (plen > sizeof(chunks_store))
6380 /* already processed a Chunks list */
6383 phdr = sctp_get_next_param(m, offset,
6384 (struct sctp_paramhdr *)chunks_store,
6385 min(plen, sizeof(chunks_store)));
6388 chunks = (struct sctp_auth_chunk_list *)phdr;
6389 num_chunks = plen - sizeof(*chunks);
6390 if (stcb->asoc.peer_auth_chunks != NULL)
6391 sctp_clear_chunklist(stcb->asoc.peer_auth_chunks);
6393 stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist();
6394 for (i = 0; i < num_chunks; i++) {
6395 (void)sctp_auth_add_chunk(chunks->chunk_types[i],
6396 stcb->asoc.peer_auth_chunks);
6397 /* record asconf/asconf-ack if listed */
6398 if (chunks->chunk_types[i] == SCTP_ASCONF)
6400 if (chunks->chunk_types[i] == SCTP_ASCONF_ACK)
6405 } else if ((ptype == SCTP_HEARTBEAT_INFO) ||
6406 (ptype == SCTP_STATE_COOKIE) ||
6407 (ptype == SCTP_UNRECOG_PARAM) ||
6408 (ptype == SCTP_COOKIE_PRESERVE) ||
6409 (ptype == SCTP_SUPPORTED_ADDRTYPE) ||
6410 (ptype == SCTP_ADD_IP_ADDRESS) ||
6411 (ptype == SCTP_DEL_IP_ADDRESS) ||
6412 (ptype == SCTP_ERROR_CAUSE_IND) ||
6413 (ptype == SCTP_SUCCESS_REPORT)) {
6416 if ((ptype & 0x8000) == 0x0000) {
6418 * must stop processing the rest of the
6419 * param's. Any report bits were handled
6421 * sctp_arethere_unrecognized_parameters()
6422 * when the INIT or INIT-ACK was first seen.
6429 offset += SCTP_SIZE32(plen);
6430 if (offset >= limit) {
6433 phdr = sctp_get_next_param(m, offset, &parm_buf,
6436 /* Now check to see if we need to purge any addresses */
6437 TAILQ_FOREACH_SAFE(net, &stcb->asoc.nets, sctp_next, nnet) {
6438 if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) ==
6439 SCTP_ADDR_NOT_IN_ASSOC) {
6440 /* This address has been removed from the asoc */
6441 /* remove and free it */
6442 stcb->asoc.numnets--;
6443 TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next);
6444 sctp_free_remote_addr(net);
6445 if (net == stcb->asoc.primary_destination) {
6446 stcb->asoc.primary_destination = NULL;
6447 sctp_select_primary_destination(stcb);
6451 if (ecn_allowed == 0) {
6452 stcb->asoc.ecn_allowed = 0;
6454 /* validate authentication required parameters */
6455 if (got_random && got_hmacs) {
6456 stcb->asoc.peer_supports_auth = 1;
6458 stcb->asoc.peer_supports_auth = 0;
6460 if (!stcb->asoc.peer_supports_auth && got_chklist) {
6461 /* peer does not support auth but sent a chunks list? */
6464 if (!SCTP_BASE_SYSCTL(sctp_asconf_auth_nochk) && stcb->asoc.peer_supports_asconf &&
6465 !stcb->asoc.peer_supports_auth) {
6466 /* peer supports asconf but not auth? */
6468 } else if ((stcb->asoc.peer_supports_asconf) && (stcb->asoc.peer_supports_auth) &&
6469 ((saw_asconf == 0) || (saw_asconf_ack == 0))) {
6472 /* concatenate the full random key */
6473 keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len;
6474 if (chunks != NULL) {
6475 keylen += sizeof(*chunks) + num_chunks;
6477 new_key = sctp_alloc_key(keylen);
6478 if (new_key != NULL) {
6479 /* copy in the RANDOM */
6480 if (p_random != NULL) {
6481 keylen = sizeof(*p_random) + random_len;
6482 bcopy(p_random, new_key->key, keylen);
6484 /* append in the AUTH chunks */
6485 if (chunks != NULL) {
6486 bcopy(chunks, new_key->key + keylen,
6487 sizeof(*chunks) + num_chunks);
6488 keylen += sizeof(*chunks) + num_chunks;
6490 /* append in the HMACs */
6491 if (hmacs != NULL) {
6492 bcopy(hmacs, new_key->key + keylen,
6493 sizeof(*hmacs) + hmacs_len);
6496 /* failed to get memory for the key */
6499 if (stcb->asoc.authinfo.peer_random != NULL)
6500 sctp_free_key(stcb->asoc.authinfo.peer_random);
6501 stcb->asoc.authinfo.peer_random = new_key;
6502 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid);
6503 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid);
6509 sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa,
6510 struct sctp_nets *net)
6512 /* make sure the requested primary address exists in the assoc */
6513 if (net == NULL && sa)
6514 net = sctp_findnet(stcb, sa);
6517 /* didn't find the requested primary address! */
6520 /* set the primary address */
6521 if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
6522 /* Must be confirmed, so queue to set */
6523 net->dest_state |= SCTP_ADDR_REQ_PRIMARY;
6526 stcb->asoc.primary_destination = net;
6527 net->dest_state &= ~SCTP_ADDR_WAS_PRIMARY;
6528 net = TAILQ_FIRST(&stcb->asoc.nets);
6529 if (net != stcb->asoc.primary_destination) {
6531 * first one on the list is NOT the primary
6532 * sctp_cmpaddr() is much more efficient if the
6533 * primary is the first on the list, make it so.
6535 TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6536 TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6543 sctp_is_vtag_good(struct sctp_inpcb *inp, uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now, int save_in_twait)
6546 * This function serves two purposes. It will see if a TAG can be
6547 * re-used and return 1 for yes it is ok and 0 for don't use that
6548 * tag. A secondary function it will do is purge out old tags that
6551 struct sctpvtaghead *chain;
6552 struct sctp_tagblock *twait_block;
6553 struct sctpasochead *head;
6554 struct sctp_tcb *stcb;
6557 SCTP_INP_INFO_RLOCK();
6558 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag,
6559 SCTP_BASE_INFO(hashasocmark))];
6562 goto skip_vtag_check;
6564 LIST_FOREACH(stcb, head, sctp_asocs) {
6566 * We choose not to lock anything here. TCB's can't be
6567 * removed since we have the read lock, so they can't be
6568 * freed on us, same thing for the INP. I may be wrong with
6569 * this assumption, but we will go with it for now :-)
6571 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
6574 if (stcb->asoc.my_vtag == tag) {
6576 if (stcb->rport != rport) {
6579 if (stcb->sctp_ep->sctp_lport != lport) {
6582 /* Its a used tag set */
6583 SCTP_INP_INFO_RUNLOCK();
6589 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
6590 /* Now what about timed wait ? */
6591 if (!LIST_EMPTY(chain)) {
6593 * Block(s) are present, lets see if we have this tag in the
6596 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6597 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
6598 if (twait_block->vtag_block[i].v_tag == 0) {
6601 } else if ((long)twait_block->vtag_block[i].tv_sec_at_expire <
6603 /* Audit expires this guy */
6604 twait_block->vtag_block[i].tv_sec_at_expire = 0;
6605 twait_block->vtag_block[i].v_tag = 0;
6606 twait_block->vtag_block[i].lport = 0;
6607 twait_block->vtag_block[i].rport = 0;
6608 } else if ((twait_block->vtag_block[i].v_tag == tag) &&
6609 (twait_block->vtag_block[i].lport == lport) &&
6610 (twait_block->vtag_block[i].rport == rport)) {
6611 /* Bad tag, sorry :< */
6612 SCTP_INP_INFO_RUNLOCK();
6618 SCTP_INP_INFO_RUNLOCK();
6623 static sctp_assoc_t reneged_asoc_ids[256];
6624 static uint8_t reneged_at = 0;
6628 sctp_drain_mbufs(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
6631 * We must hunt this association for MBUF's past the cumack (i.e.
6632 * out of order data that we can renege on).
6634 struct sctp_association *asoc;
6635 struct sctp_tmit_chunk *chk, *nchk;
6636 uint32_t cumulative_tsn_p1;
6637 struct sctp_queued_to_read *ctl, *nctl;
6642 /* We look for anything larger than the cum-ack + 1 */
6645 if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) {
6646 /* none we can reneg on. */
6649 SCTP_STAT_INCR(sctps_protocol_drains_done);
6650 cumulative_tsn_p1 = asoc->cumulative_tsn + 1;
6652 /* First look in the re-assembly queue */
6653 TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) {
6654 if (SCTP_TSN_GT(chk->rec.data.TSN_seq, cumulative_tsn_p1)) {
6655 /* Yep it is above cum-ack */
6657 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.TSN_seq, asoc->mapping_array_base_tsn);
6658 asoc->size_on_reasm_queue = sctp_sbspace_sub(asoc->size_on_reasm_queue, chk->send_size);
6659 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6660 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6661 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
6663 sctp_m_freem(chk->data);
6666 sctp_free_a_chunk(stcb, chk);
6669 /* Ok that was fun, now we will drain all the inbound streams? */
6670 for (strmat = 0; strmat < asoc->streamincnt; strmat++) {
6671 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[strmat].inqueue, next, nctl) {
6672 if (SCTP_TSN_GT(ctl->sinfo_tsn, cumulative_tsn_p1)) {
6673 /* Yep it is above cum-ack */
6675 SCTP_CALC_TSN_TO_GAP(gap, ctl->sinfo_tsn, asoc->mapping_array_base_tsn);
6676 asoc->size_on_all_streams = sctp_sbspace_sub(asoc->size_on_all_streams, ctl->length);
6677 sctp_ucount_decr(asoc->cnt_on_all_streams);
6678 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6679 TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, ctl, next);
6681 sctp_m_freem(ctl->data);
6684 sctp_free_remote_addr(ctl->whoFrom);
6685 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
6686 SCTP_DECR_READQ_COUNT();
6691 /* We must back down to see what the new highest is */
6692 for (i = asoc->highest_tsn_inside_map; SCTP_TSN_GE(i, asoc->mapping_array_base_tsn); i--) {
6693 SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn);
6694 if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) {
6695 asoc->highest_tsn_inside_map = i;
6701 asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1;
6704 * Question, should we go through the delivery queue? The
6705 * only reason things are on here is the app not reading OR
6706 * a p-d-api up. An attacker COULD send enough in to
6707 * initiate the PD-API and then send a bunch of stuff to
6708 * other streams... these would wind up on the delivery
6709 * queue.. and then we would not get to them. But in order
6710 * to do this I then have to back-track and un-deliver
6711 * sequence numbers in streams.. el-yucko. I think for now
6712 * we will NOT look at the delivery queue and leave it to be
6713 * something to consider later. An alternative would be to
6714 * abort the P-D-API with a notification and then deliver
6715 * the data.... Or another method might be to keep track of
6716 * how many times the situation occurs and if we see a
6717 * possible attack underway just abort the association.
6720 SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt);
6723 * Now do we need to find a new
6724 * asoc->highest_tsn_inside_map?
6726 asoc->last_revoke_count = cnt;
6727 (void)SCTP_OS_TIMER_STOP(&stcb->asoc.dack_timer.timer);
6728 /* sa_ignore NO_NULL_CHK */
6729 sctp_send_sack(stcb);
6730 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED);
6731 reneged_asoc_ids[reneged_at] = sctp_get_associd(stcb);
6735 * Another issue, in un-setting the TSN's in the mapping array we
6736 * DID NOT adjust the highest_tsn marker. This will cause one of
6737 * two things to occur. It may cause us to do extra work in checking
6738 * for our mapping array movement. More importantly it may cause us
6739 * to SACK every datagram. This may not be a bad thing though since
6740 * we will recover once we get our cum-ack above and all this stuff
6741 * we dumped recovered.
6749 * We must walk the PCB lists for ALL associations here. The system
6750 * is LOW on MBUF's and needs help. This is where reneging will
6751 * occur. We really hope this does NOT happen!
6753 VNET_ITERATOR_DECL(vnet_iter);
6754 VNET_LIST_RLOCK_NOSLEEP();
6755 VNET_FOREACH(vnet_iter) {
6756 CURVNET_SET(vnet_iter);
6757 struct sctp_inpcb *inp;
6758 struct sctp_tcb *stcb;
6760 SCTP_STAT_INCR(sctps_protocol_drain_calls);
6761 if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
6768 SCTP_INP_INFO_RLOCK();
6769 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
6770 /* For each endpoint */
6771 SCTP_INP_RLOCK(inp);
6772 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
6773 /* For each association */
6774 SCTP_TCB_LOCK(stcb);
6775 sctp_drain_mbufs(inp, stcb);
6776 SCTP_TCB_UNLOCK(stcb);
6778 SCTP_INP_RUNLOCK(inp);
6780 SCTP_INP_INFO_RUNLOCK();
6783 VNET_LIST_RUNLOCK_NOSLEEP();
6787 * start a new iterator
6788 * iterates through all endpoints and associations based on the pcb_state
6789 * flags and asoc_state. "af" (mandatory) is executed for all matching
6790 * assocs and "ef" (optional) is executed when the iterator completes.
6791 * "inpf" (optional) is executed for each new endpoint as it is being
6792 * iterated through. inpe (optional) is called when the inp completes
6793 * its way through all the stcbs.
6796 sctp_initiate_iterator(inp_func inpf,
6800 uint32_t pcb_features,
6801 uint32_t asoc_state,
6805 struct sctp_inpcb *s_inp,
6806 uint8_t chunk_output_off)
6808 struct sctp_iterator *it = NULL;
6813 SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator),
6816 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
6819 memset(it, 0, sizeof(*it));
6820 it->function_assoc = af;
6821 it->function_inp = inpf;
6823 it->done_current_ep = 0;
6825 it->done_current_ep = 1;
6826 it->function_atend = ef;
6829 it->pcb_flags = pcb_state;
6830 it->pcb_features = pcb_features;
6831 it->asoc_state = asoc_state;
6832 it->function_inp_end = inpe;
6833 it->no_chunk_output = chunk_output_off;
6836 /* Assume lock is held here */
6838 SCTP_INP_INCR_REF(it->inp);
6839 it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP;
6841 SCTP_INP_INFO_RLOCK();
6842 it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead));
6844 SCTP_INP_INCR_REF(it->inp);
6846 SCTP_INP_INFO_RUNLOCK();
6847 it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP;
6850 SCTP_IPI_ITERATOR_WQ_LOCK();
6852 TAILQ_INSERT_TAIL(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
6853 if (sctp_it_ctl.iterator_running == 0) {
6854 sctp_wakeup_iterator();
6856 SCTP_IPI_ITERATOR_WQ_UNLOCK();
6857 /* sa_ignore MEMLEAK {memory is put on the tailq for the iterator} */