2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
4 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
9 * a) Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
12 * b) Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the distribution.
16 * c) Neither the name of Cisco Systems, Inc. nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <netinet/sctp_os.h>
38 #include <netinet/sctp_var.h>
39 #include <netinet/sctp_sysctl.h>
40 #include <netinet/sctp_pcb.h>
41 #include <netinet/sctputil.h>
42 #include <netinet/sctp.h>
43 #include <netinet/sctp_header.h>
44 #include <netinet/sctp_asconf.h>
45 #include <netinet/sctp_output.h>
46 #include <netinet/sctp_timer.h>
47 #include <netinet/sctp_bsd_addr.h>
48 #include <netinet/sctp_dtrace_define.h>
49 #if defined(INET) || defined(INET6)
50 #include <netinet/udp.h>
53 #include <netinet6/ip6_var.h>
55 #include <sys/sched.h>
57 #include <sys/unistd.h>
60 VNET_DEFINE(struct sctp_base_info, system_base_info);
62 /* FIX: we don't handle multiple link local scopes */
63 /* "scopeless" replacement IN6_ARE_ADDR_EQUAL */
66 SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b)
68 struct sockaddr_in6 tmp_a, tmp_b;
70 memcpy(&tmp_a, a, sizeof(struct sockaddr_in6));
71 if (sa6_embedscope(&tmp_a, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
74 memcpy(&tmp_b, b, sizeof(struct sockaddr_in6));
75 if (sa6_embedscope(&tmp_b, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
78 return (IN6_ARE_ADDR_EQUAL(&tmp_a.sin6_addr, &tmp_b.sin6_addr));
84 sctp_fill_pcbinfo(struct sctp_pcbinfo *spcb)
87 * We really don't need to lock this, but I will just because it
90 SCTP_INP_INFO_RLOCK();
91 spcb->ep_count = SCTP_BASE_INFO(ipi_count_ep);
92 spcb->asoc_count = SCTP_BASE_INFO(ipi_count_asoc);
93 spcb->laddr_count = SCTP_BASE_INFO(ipi_count_laddr);
94 spcb->raddr_count = SCTP_BASE_INFO(ipi_count_raddr);
95 spcb->chk_count = SCTP_BASE_INFO(ipi_count_chunk);
96 spcb->readq_count = SCTP_BASE_INFO(ipi_count_readq);
97 spcb->stream_oque = SCTP_BASE_INFO(ipi_count_strmoq);
98 spcb->free_chunks = SCTP_BASE_INFO(ipi_free_chunks);
99 SCTP_INP_INFO_RUNLOCK();
103 * Addresses are added to VRF's (Virtual Router's). For BSD we
104 * have only the default VRF 0. We maintain a hash list of
105 * VRF's. Each VRF has its own list of sctp_ifn's. Each of
106 * these has a list of addresses. When we add a new address
107 * to a VRF we lookup the ifn/ifn_index, if the ifn does
108 * not exist we create it and add it to the list of IFN's
109 * within the VRF. Once we have the sctp_ifn, we add the
110 * address to the list. So we look something like:
113 * vrf-> ifn-> ifn -> ifn
115 * ... +--ifa-> ifa -> ifa
118 * We keep these separate lists since the SCTP subsystem will
119 * point to these from its source address selection nets structure.
120 * When an address is deleted it does not happen right away on
121 * the SCTP side, it gets scheduled. What we do when a
122 * delete happens is immediately remove the address from
123 * the master list and decrement the refcount. As our
124 * addip iterator works through and frees the src address
125 * selection pointing to the sctp_ifa, eventually the refcount
126 * will reach 0 and we will delete it. Note that it is assumed
127 * that any locking on system level ifn/ifa is done at the
128 * caller of these functions and these routines will only
129 * lock the SCTP structures as they add or delete things.
131 * Other notes on VRF concepts.
132 * - An endpoint can be in multiple VRF's
133 * - An association lives within a VRF and only one VRF.
134 * - Any incoming packet we can deduce the VRF for by
135 * looking at the mbuf/pak inbound (for BSD its VRF=0 :D)
136 * - Any downward send call or connect call must supply the
137 * VRF via ancillary data or via some sort of set default
138 * VRF socket option call (again for BSD no brainer since
139 * the VRF is always 0).
140 * - An endpoint may add multiple VRF's to it.
141 * - Listening sockets can accept associations in any
142 * of the VRF's they are in but the assoc will end up
143 * in only one VRF (gotten from the packet or connect/send).
148 sctp_allocate_vrf(int vrf_id)
150 struct sctp_vrf *vrf = NULL;
151 struct sctp_vrflist *bucket;
153 /* First allocate the VRF structure */
154 vrf = sctp_find_vrf(vrf_id);
156 /* Already allocated */
159 SCTP_MALLOC(vrf, struct sctp_vrf *, sizeof(struct sctp_vrf),
164 panic("No memory for VRF:%d", vrf_id);
169 memset(vrf, 0, sizeof(struct sctp_vrf));
170 vrf->vrf_id = vrf_id;
171 LIST_INIT(&vrf->ifnlist);
172 vrf->total_ifa_count = 0;
174 /* now also setup table ids */
175 SCTP_INIT_VRF_TABLEID(vrf);
176 /* Init the HASH of addresses */
177 vrf->vrf_addr_hash = SCTP_HASH_INIT(SCTP_VRF_ADDR_HASH_SIZE,
178 &vrf->vrf_addr_hashmark);
179 if (vrf->vrf_addr_hash == NULL) {
182 panic("No memory for VRF:%d", vrf_id);
184 SCTP_FREE(vrf, SCTP_M_VRF);
187 /* Add it to the hash table */
188 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
189 LIST_INSERT_HEAD(bucket, vrf, next_vrf);
190 atomic_add_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
196 sctp_find_ifn(void *ifn, uint32_t ifn_index)
198 struct sctp_ifn *sctp_ifnp;
199 struct sctp_ifnlist *hash_ifn_head;
202 * We assume the lock is held for the addresses if that's wrong
203 * problems could occur :-)
205 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
206 LIST_FOREACH(sctp_ifnp, hash_ifn_head, next_bucket) {
207 if (sctp_ifnp->ifn_index == ifn_index) {
210 if (sctp_ifnp->ifn_p && ifn && (sctp_ifnp->ifn_p == ifn)) {
219 sctp_find_vrf(uint32_t vrf_id)
221 struct sctp_vrflist *bucket;
222 struct sctp_vrf *liste;
224 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
225 LIST_FOREACH(liste, bucket, next_vrf) {
226 if (vrf_id == liste->vrf_id) {
235 sctp_free_vrf(struct sctp_vrf *vrf)
237 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&vrf->refcount)) {
238 if (vrf->vrf_addr_hash) {
239 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
240 vrf->vrf_addr_hash = NULL;
242 /* We zero'd the count */
243 LIST_REMOVE(vrf, next_vrf);
244 SCTP_FREE(vrf, SCTP_M_VRF);
245 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
251 sctp_free_ifn(struct sctp_ifn *sctp_ifnp)
253 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifnp->refcount)) {
254 /* We zero'd the count */
255 if (sctp_ifnp->vrf) {
256 sctp_free_vrf(sctp_ifnp->vrf);
258 SCTP_FREE(sctp_ifnp, SCTP_M_IFN);
259 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
265 sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu)
267 struct sctp_ifn *sctp_ifnp;
269 sctp_ifnp = sctp_find_ifn((void *)NULL, ifn_index);
270 if (sctp_ifnp != NULL) {
271 sctp_ifnp->ifn_mtu = mtu;
277 sctp_free_ifa(struct sctp_ifa *sctp_ifap)
279 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifap->refcount)) {
280 /* We zero'd the count */
281 if (sctp_ifap->ifn_p) {
282 sctp_free_ifn(sctp_ifap->ifn_p);
284 SCTP_FREE(sctp_ifap, SCTP_M_IFA);
285 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
291 sctp_delete_ifn(struct sctp_ifn *sctp_ifnp, int hold_addr_lock)
293 struct sctp_ifn *found;
295 found = sctp_find_ifn(sctp_ifnp->ifn_p, sctp_ifnp->ifn_index);
297 /* Not in the list.. sorry */
300 if (hold_addr_lock == 0)
301 SCTP_IPI_ADDR_WLOCK();
302 LIST_REMOVE(sctp_ifnp, next_bucket);
303 LIST_REMOVE(sctp_ifnp, next_ifn);
304 SCTP_DEREGISTER_INTERFACE(sctp_ifnp->ifn_index,
305 sctp_ifnp->registered_af);
306 if (hold_addr_lock == 0)
307 SCTP_IPI_ADDR_WUNLOCK();
308 /* Take away the reference, and possibly free it */
309 sctp_free_ifn(sctp_ifnp);
314 sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr,
315 const char *if_name, uint32_t ifn_index)
317 struct sctp_vrf *vrf;
318 struct sctp_ifa *sctp_ifap;
320 SCTP_IPI_ADDR_RLOCK();
321 vrf = sctp_find_vrf(vrf_id);
323 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
327 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
328 if (sctp_ifap == NULL) {
329 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
332 if (sctp_ifap->ifn_p == NULL) {
333 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unusable\n");
337 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) != 0) {
338 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
339 sctp_ifap->ifn_p->ifn_name, if_name);
343 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
344 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
345 sctp_ifap->ifn_p->ifn_index, ifn_index);
350 sctp_ifap->localifa_flags &= (~SCTP_ADDR_VALID);
351 sctp_ifap->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE;
353 SCTP_IPI_ADDR_RUNLOCK();
358 sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr,
359 const char *if_name, uint32_t ifn_index)
361 struct sctp_vrf *vrf;
362 struct sctp_ifa *sctp_ifap;
364 SCTP_IPI_ADDR_RLOCK();
365 vrf = sctp_find_vrf(vrf_id);
367 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
371 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
372 if (sctp_ifap == NULL) {
373 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
376 if (sctp_ifap->ifn_p == NULL) {
377 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unusable\n");
381 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) != 0) {
382 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
383 sctp_ifap->ifn_p->ifn_name, if_name);
387 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
388 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
389 sctp_ifap->ifn_p->ifn_index, ifn_index);
394 sctp_ifap->localifa_flags &= (~SCTP_ADDR_IFA_UNUSEABLE);
395 sctp_ifap->localifa_flags |= SCTP_ADDR_VALID;
397 SCTP_IPI_ADDR_RUNLOCK();
402 * Add an ifa to an ifn.
403 * Register the interface as necessary.
404 * NOTE: ADDR write lock MUST be held.
407 sctp_add_ifa_to_ifn(struct sctp_ifn *sctp_ifnp, struct sctp_ifa *sctp_ifap)
411 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
412 sctp_ifap->ifn_p = sctp_ifnp;
413 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
414 /* update address counts */
415 sctp_ifnp->ifa_count++;
416 ifa_af = sctp_ifap->address.sa.sa_family;
431 if (sctp_ifnp->ifa_count == 1) {
432 /* register the new interface */
433 SCTP_REGISTER_INTERFACE(sctp_ifnp->ifn_index, ifa_af);
434 sctp_ifnp->registered_af = ifa_af;
440 * Remove an ifa from its ifn.
441 * If no more addresses exist, remove the ifn too. Otherwise, re-register
442 * the interface based on the remaining address families left.
443 * NOTE: ADDR write lock MUST be held.
446 sctp_remove_ifa_from_ifn(struct sctp_ifa *sctp_ifap)
448 LIST_REMOVE(sctp_ifap, next_ifa);
449 if (sctp_ifap->ifn_p) {
450 /* update address counts */
451 sctp_ifap->ifn_p->ifa_count--;
452 switch (sctp_ifap->address.sa.sa_family) {
455 sctp_ifap->ifn_p->num_v4--;
460 sctp_ifap->ifn_p->num_v6--;
467 if (LIST_EMPTY(&sctp_ifap->ifn_p->ifalist)) {
468 /* remove the ifn, possibly freeing it */
469 sctp_delete_ifn(sctp_ifap->ifn_p, SCTP_ADDR_LOCKED);
471 /* re-register address family type, if needed */
472 if ((sctp_ifap->ifn_p->num_v6 == 0) &&
473 (sctp_ifap->ifn_p->registered_af == AF_INET6)) {
474 SCTP_DEREGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET6);
475 SCTP_REGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET);
476 sctp_ifap->ifn_p->registered_af = AF_INET;
477 } else if ((sctp_ifap->ifn_p->num_v4 == 0) &&
478 (sctp_ifap->ifn_p->registered_af == AF_INET)) {
479 SCTP_DEREGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET);
480 SCTP_REGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET6);
481 sctp_ifap->ifn_p->registered_af = AF_INET6;
483 /* free the ifn refcount */
484 sctp_free_ifn(sctp_ifap->ifn_p);
486 sctp_ifap->ifn_p = NULL;
492 sctp_add_addr_to_vrf(uint32_t vrf_id, void *ifn, uint32_t ifn_index,
493 uint32_t ifn_type, const char *if_name, void *ifa,
494 struct sockaddr *addr, uint32_t ifa_flags,
497 struct sctp_vrf *vrf;
498 struct sctp_ifn *sctp_ifnp = NULL;
499 struct sctp_ifa *sctp_ifap = NULL;
500 struct sctp_ifalist *hash_addr_head;
501 struct sctp_ifnlist *hash_ifn_head;
502 uint32_t hash_of_addr;
506 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: adding address: ", vrf_id);
507 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
509 SCTP_IPI_ADDR_WLOCK();
510 sctp_ifnp = sctp_find_ifn(ifn, ifn_index);
512 vrf = sctp_ifnp->vrf;
514 vrf = sctp_find_vrf(vrf_id);
516 vrf = sctp_allocate_vrf(vrf_id);
518 SCTP_IPI_ADDR_WUNLOCK();
523 if (sctp_ifnp == NULL) {
525 * build one and add it, can't hold lock until after malloc
528 SCTP_IPI_ADDR_WUNLOCK();
529 SCTP_MALLOC(sctp_ifnp, struct sctp_ifn *,
530 sizeof(struct sctp_ifn), SCTP_M_IFN);
531 if (sctp_ifnp == NULL) {
533 panic("No memory for IFN");
537 memset(sctp_ifnp, 0, sizeof(struct sctp_ifn));
538 sctp_ifnp->ifn_index = ifn_index;
539 sctp_ifnp->ifn_p = ifn;
540 sctp_ifnp->ifn_type = ifn_type;
541 sctp_ifnp->refcount = 0;
542 sctp_ifnp->vrf = vrf;
543 atomic_add_int(&vrf->refcount, 1);
544 sctp_ifnp->ifn_mtu = SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, addr->sa_family);
545 if (if_name != NULL) {
546 snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", if_name);
548 snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", "unknown");
550 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
551 LIST_INIT(&sctp_ifnp->ifalist);
552 SCTP_IPI_ADDR_WLOCK();
553 LIST_INSERT_HEAD(hash_ifn_head, sctp_ifnp, next_bucket);
554 LIST_INSERT_HEAD(&vrf->ifnlist, sctp_ifnp, next_ifn);
555 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
558 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
560 /* Hmm, it already exists? */
561 if ((sctp_ifap->ifn_p) &&
562 (sctp_ifap->ifn_p->ifn_index == ifn_index)) {
563 SCTPDBG(SCTP_DEBUG_PCB4, "Using existing ifn %s (0x%x) for ifa %p\n",
564 sctp_ifap->ifn_p->ifn_name, ifn_index,
567 /* Remove the created one that we don't want */
568 sctp_delete_ifn(sctp_ifnp, SCTP_ADDR_LOCKED);
570 if (sctp_ifap->localifa_flags & SCTP_BEING_DELETED) {
571 /* easy to solve, just switch back to active */
572 SCTPDBG(SCTP_DEBUG_PCB4, "Clearing deleted ifa flag\n");
573 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
574 sctp_ifap->ifn_p = sctp_ifnp;
575 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
578 SCTP_IPI_ADDR_WUNLOCK();
581 if (sctp_ifap->ifn_p) {
583 * The last IFN gets the address, remove the
586 SCTPDBG(SCTP_DEBUG_PCB4, "Moving ifa %p from %s (0x%x) to %s (0x%x)\n",
587 (void *)sctp_ifap, sctp_ifap->ifn_p->ifn_name,
588 sctp_ifap->ifn_p->ifn_index, if_name,
590 /* remove the address from the old ifn */
591 sctp_remove_ifa_from_ifn(sctp_ifap);
592 /* move the address over to the new ifn */
593 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
594 goto exit_stage_left;
596 /* repair ifnp which was NULL ? */
597 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
598 SCTPDBG(SCTP_DEBUG_PCB4, "Repairing ifn %p for ifa %p\n",
599 (void *)sctp_ifnp, (void *)sctp_ifap);
600 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
602 goto exit_stage_left;
605 SCTP_IPI_ADDR_WUNLOCK();
606 SCTP_MALLOC(sctp_ifap, struct sctp_ifa *, sizeof(struct sctp_ifa), SCTP_M_IFA);
607 if (sctp_ifap == NULL) {
609 panic("No memory for IFA");
613 memset(sctp_ifap, 0, sizeof(struct sctp_ifa));
614 sctp_ifap->ifn_p = sctp_ifnp;
615 atomic_add_int(&sctp_ifnp->refcount, 1);
616 sctp_ifap->vrf_id = vrf_id;
617 sctp_ifap->ifa = ifa;
618 memcpy(&sctp_ifap->address, addr, addr->sa_len);
619 sctp_ifap->localifa_flags = SCTP_ADDR_VALID | SCTP_ADDR_DEFER_USE;
620 sctp_ifap->flags = ifa_flags;
622 switch (sctp_ifap->address.sa.sa_family) {
626 struct sockaddr_in *sin;
628 sin = &sctp_ifap->address.sin;
629 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
630 (IN4_ISLOOPBACK_ADDRESS(&sin->sin_addr))) {
631 sctp_ifap->src_is_loop = 1;
633 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
634 sctp_ifap->src_is_priv = 1;
638 new_ifn_af = AF_INET;
645 /* ok to use deprecated addresses? */
646 struct sockaddr_in6 *sin6;
648 sin6 = &sctp_ifap->address.sin6;
649 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
650 (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))) {
651 sctp_ifap->src_is_loop = 1;
653 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
654 sctp_ifap->src_is_priv = 1;
658 new_ifn_af = AF_INET6;
666 hash_of_addr = sctp_get_ifa_hash_val(&sctp_ifap->address.sa);
668 if ((sctp_ifap->src_is_priv == 0) &&
669 (sctp_ifap->src_is_loop == 0)) {
670 sctp_ifap->src_is_glob = 1;
672 SCTP_IPI_ADDR_WLOCK();
673 hash_addr_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
674 LIST_INSERT_HEAD(hash_addr_head, sctp_ifap, next_bucket);
675 sctp_ifap->refcount = 1;
676 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
677 sctp_ifnp->ifa_count++;
678 vrf->total_ifa_count++;
679 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
681 SCTP_REGISTER_INTERFACE(ifn_index, new_ifn_af);
682 sctp_ifnp->registered_af = new_ifn_af;
684 SCTP_IPI_ADDR_WUNLOCK();
687 * Bump up the refcount so that when the timer completes it
688 * will drop back down.
690 struct sctp_laddr *wi;
692 atomic_add_int(&sctp_ifap->refcount, 1);
693 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
696 * Gak, what can we do? We have lost an address
697 * change can you say HOSED?
699 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
700 /* Opps, must decrement the count */
701 sctp_del_addr_from_vrf(vrf_id, addr, ifn_index,
705 SCTP_INCR_LADDR_COUNT();
706 bzero(wi, sizeof(*wi));
707 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
709 wi->action = SCTP_ADD_IP_ADDRESS;
712 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
713 SCTP_WQ_ADDR_UNLOCK();
715 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
716 (struct sctp_inpcb *)NULL,
717 (struct sctp_tcb *)NULL,
718 (struct sctp_nets *)NULL);
720 /* it's ready for use */
721 sctp_ifap->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
727 sctp_del_addr_from_vrf(uint32_t vrf_id, struct sockaddr *addr,
728 uint32_t ifn_index, const char *if_name)
730 struct sctp_vrf *vrf;
731 struct sctp_ifa *sctp_ifap = NULL;
733 SCTP_IPI_ADDR_WLOCK();
734 vrf = sctp_find_vrf(vrf_id);
736 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
740 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: deleting address:", vrf_id);
741 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
743 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
745 /* Validate the delete */
746 if (sctp_ifap->ifn_p) {
750 * The name has priority over the ifn_index
751 * if its given. We do this especially for
752 * panda who might recycle indexes fast.
755 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) == 0) {
756 /* They match its a correct delete */
761 /* last ditch check ifn_index */
762 if (ifn_index == sctp_ifap->ifn_p->ifn_index) {
767 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s does not match addresses\n",
768 ifn_index, ((if_name == NULL) ? "NULL" : if_name));
769 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s - ignoring delete\n",
770 sctp_ifap->ifn_p->ifn_index, sctp_ifap->ifn_p->ifn_name);
771 SCTP_IPI_ADDR_WUNLOCK();
775 SCTPDBG(SCTP_DEBUG_PCB4, "Deleting ifa %p\n", (void *)sctp_ifap);
776 sctp_ifap->localifa_flags &= SCTP_ADDR_VALID;
778 * We don't set the flag. This means that the structure will
779 * hang around in EP's that have bound specific to it until
780 * they close. This gives us TCP like behavior if someone
781 * removes an address (or for that matter adds it right
784 /* sctp_ifap->localifa_flags |= SCTP_BEING_DELETED; */
785 vrf->total_ifa_count--;
786 LIST_REMOVE(sctp_ifap, next_bucket);
787 sctp_remove_ifa_from_ifn(sctp_ifap);
791 SCTPDBG(SCTP_DEBUG_PCB4, "Del Addr-ifn:%d Could not find address:",
793 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
798 SCTP_IPI_ADDR_WUNLOCK();
800 struct sctp_laddr *wi;
802 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
805 * Gak, what can we do? We have lost an address
806 * change can you say HOSED?
808 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
810 /* Oops, must decrement the count */
811 sctp_free_ifa(sctp_ifap);
814 SCTP_INCR_LADDR_COUNT();
815 bzero(wi, sizeof(*wi));
816 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
818 wi->action = SCTP_DEL_IP_ADDRESS;
821 * Should this really be a tailq? As it is we will process
822 * the newest first :-0
824 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
825 SCTP_WQ_ADDR_UNLOCK();
827 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
828 (struct sctp_inpcb *)NULL,
829 (struct sctp_tcb *)NULL,
830 (struct sctp_nets *)NULL);
837 sctp_does_stcb_own_this_addr(struct sctp_tcb *stcb, struct sockaddr *to)
842 int ipv4_local_scope, ipv4_addr_legal;
846 int local_scope, site_scope, ipv6_addr_legal;
849 struct sctp_vrf *vrf;
850 struct sctp_ifn *sctp_ifn;
851 struct sctp_ifa *sctp_ifa;
853 loopback_scope = stcb->asoc.scope.loopback_scope;
855 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
856 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
859 local_scope = stcb->asoc.scope.local_scope;
860 site_scope = stcb->asoc.scope.site_scope;
861 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
864 SCTP_IPI_ADDR_RLOCK();
865 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
867 /* no vrf, no addresses */
868 SCTP_IPI_ADDR_RUNLOCK();
871 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
872 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
873 if ((loopback_scope == 0) &&
874 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
877 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
878 if (sctp_is_addr_restricted(stcb, sctp_ifa) &&
879 (!sctp_is_addr_pending(stcb, sctp_ifa))) {
881 * We allow pending addresses, where
882 * we have sent an asconf-add to be
887 if (sctp_ifa->address.sa.sa_family != to->sa_family) {
890 switch (sctp_ifa->address.sa.sa_family) {
893 if (ipv4_addr_legal) {
894 struct sockaddr_in *sin,
897 sin = &sctp_ifa->address.sin;
898 rsin = (struct sockaddr_in *)to;
899 if ((ipv4_local_scope == 0) &&
900 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
903 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
904 &sin->sin_addr) != 0) {
907 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
908 SCTP_IPI_ADDR_RUNLOCK();
916 if (ipv6_addr_legal) {
917 struct sockaddr_in6 *sin6,
920 sin6 = &sctp_ifa->address.sin6;
921 rsin6 = (struct sockaddr_in6 *)to;
922 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
923 &sin6->sin6_addr) != 0) {
926 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
927 if (local_scope == 0)
929 if (sin6->sin6_scope_id == 0) {
930 if (sa6_recoverscope(sin6) != 0)
934 if ((site_scope == 0) &&
935 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
938 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
939 SCTP_IPI_ADDR_RUNLOCK();
952 struct sctp_laddr *laddr;
954 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
955 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
956 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
959 if (sctp_is_addr_restricted(stcb, laddr->ifa) &&
960 (!sctp_is_addr_pending(stcb, laddr->ifa))) {
962 * We allow pending addresses, where we have
963 * sent an asconf-add to be considered
968 if (laddr->ifa->address.sa.sa_family != to->sa_family) {
971 switch (to->sa_family) {
975 struct sockaddr_in *sin, *rsin;
977 sin = &laddr->ifa->address.sin;
978 rsin = (struct sockaddr_in *)to;
979 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
980 SCTP_IPI_ADDR_RUNLOCK();
989 struct sockaddr_in6 *sin6, *rsin6;
991 sin6 = &laddr->ifa->address.sin6;
992 rsin6 = (struct sockaddr_in6 *)to;
993 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
994 SCTP_IPI_ADDR_RUNLOCK();
1008 SCTP_IPI_ADDR_RUNLOCK();
1013 static struct sctp_tcb *
1014 sctp_tcb_special_locate(struct sctp_inpcb **inp_p, struct sockaddr *from,
1015 struct sockaddr *to, struct sctp_nets **netp, uint32_t vrf_id)
1017 /**** ASSUMES THE CALLER holds the INP_INFO_RLOCK */
1019 * If we support the TCP model, then we must now dig through to see
1020 * if we can find our endpoint in the list of tcp ep's.
1022 uint16_t lport, rport;
1023 struct sctppcbhead *ephead;
1024 struct sctp_inpcb *inp;
1025 struct sctp_laddr *laddr;
1026 struct sctp_tcb *stcb;
1027 struct sctp_nets *net;
1029 if ((to == NULL) || (from == NULL)) {
1032 switch (to->sa_family) {
1035 if (from->sa_family == AF_INET) {
1036 lport = ((struct sockaddr_in *)to)->sin_port;
1037 rport = ((struct sockaddr_in *)from)->sin_port;
1045 if (from->sa_family == AF_INET6) {
1046 lport = ((struct sockaddr_in6 *)to)->sin6_port;
1047 rport = ((struct sockaddr_in6 *)from)->sin6_port;
1056 ephead = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
1058 * Ok now for each of the guys in this bucket we must look and see:
1059 * - Does the remote port match. - Does there single association's
1060 * addresses match this address (to). If so we update p_ep to point
1061 * to this ep and return the tcb from it.
1063 LIST_FOREACH(inp, ephead, sctp_hash) {
1064 SCTP_INP_RLOCK(inp);
1065 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1066 SCTP_INP_RUNLOCK(inp);
1069 if (lport != inp->sctp_lport) {
1070 SCTP_INP_RUNLOCK(inp);
1073 switch (to->sa_family) {
1077 struct sockaddr_in *sin;
1079 sin = (struct sockaddr_in *)to;
1080 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
1081 &sin->sin_addr) != 0) {
1082 SCTP_INP_RUNLOCK(inp);
1091 struct sockaddr_in6 *sin6;
1093 sin6 = (struct sockaddr_in6 *)to;
1094 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
1095 &sin6->sin6_addr) != 0) {
1096 SCTP_INP_RUNLOCK(inp);
1103 SCTP_INP_RUNLOCK(inp);
1106 if (inp->def_vrf_id != vrf_id) {
1107 SCTP_INP_RUNLOCK(inp);
1110 /* check to see if the ep has one of the addresses */
1111 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
1112 /* We are NOT bound all, so look further */
1115 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1117 if (laddr->ifa == NULL) {
1118 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n", __func__);
1121 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1122 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
1125 if (laddr->ifa->address.sa.sa_family ==
1127 /* see if it matches */
1129 if (from->sa_family == AF_INET) {
1130 struct sockaddr_in *intf_addr,
1133 intf_addr = &laddr->ifa->address.sin;
1134 sin = (struct sockaddr_in *)to;
1135 if (sin->sin_addr.s_addr ==
1136 intf_addr->sin_addr.s_addr) {
1143 if (from->sa_family == AF_INET6) {
1144 struct sockaddr_in6 *intf_addr6;
1145 struct sockaddr_in6 *sin6;
1147 sin6 = (struct sockaddr_in6 *)
1149 intf_addr6 = &laddr->ifa->address.sin6;
1151 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1161 /* This endpoint does not have this address */
1162 SCTP_INP_RUNLOCK(inp);
1167 * Ok if we hit here the ep has the address, does it hold
1170 /* XXX: Why don't we TAILQ_FOREACH through sctp_asoc_list? */
1171 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1173 SCTP_INP_RUNLOCK(inp);
1176 SCTP_TCB_LOCK(stcb);
1177 if (!sctp_does_stcb_own_this_addr(stcb, to)) {
1178 SCTP_TCB_UNLOCK(stcb);
1179 SCTP_INP_RUNLOCK(inp);
1182 if (stcb->rport != rport) {
1183 /* remote port does not match. */
1184 SCTP_TCB_UNLOCK(stcb);
1185 SCTP_INP_RUNLOCK(inp);
1188 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1189 SCTP_TCB_UNLOCK(stcb);
1190 SCTP_INP_RUNLOCK(inp);
1193 if (!sctp_does_stcb_own_this_addr(stcb, to)) {
1194 SCTP_TCB_UNLOCK(stcb);
1195 SCTP_INP_RUNLOCK(inp);
1198 /* Does this TCB have a matching address? */
1199 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1201 if (net->ro._l_addr.sa.sa_family != from->sa_family) {
1202 /* not the same family, can't be a match */
1205 switch (from->sa_family) {
1209 struct sockaddr_in *sin, *rsin;
1211 sin = (struct sockaddr_in *)&net->ro._l_addr;
1212 rsin = (struct sockaddr_in *)from;
1213 if (sin->sin_addr.s_addr ==
1214 rsin->sin_addr.s_addr) {
1220 * Update the endpoint
1224 SCTP_INP_RUNLOCK(inp);
1233 struct sockaddr_in6 *sin6, *rsin6;
1235 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1236 rsin6 = (struct sockaddr_in6 *)from;
1237 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1244 * Update the endpoint
1248 SCTP_INP_RUNLOCK(inp);
1259 SCTP_TCB_UNLOCK(stcb);
1260 SCTP_INP_RUNLOCK(inp);
1269 * 1) If I return a NULL you must decrement any INP ref cnt. 2) If I find an
1270 * stcb, both will be locked (locked_tcb and stcb) but decrement will be done
1271 * (if locked == NULL). 3) Decrement happens on return ONLY if locked ==
1276 sctp_findassociation_ep_addr(struct sctp_inpcb **inp_p, struct sockaddr *remote,
1277 struct sctp_nets **netp, struct sockaddr *local, struct sctp_tcb *locked_tcb)
1279 struct sctpasochead *head;
1280 struct sctp_inpcb *inp;
1281 struct sctp_tcb *stcb = NULL;
1282 struct sctp_nets *net;
1286 switch (remote->sa_family) {
1289 rport = (((struct sockaddr_in *)remote)->sin_port);
1294 rport = (((struct sockaddr_in6 *)remote)->sin6_port);
1302 * UN-lock so we can do proper locking here this occurs when
1303 * called from load_addresses_from_init.
1305 atomic_add_int(&locked_tcb->asoc.refcnt, 1);
1306 SCTP_TCB_UNLOCK(locked_tcb);
1308 SCTP_INP_INFO_RLOCK();
1309 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
1310 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
1312 * Now either this guy is our listener or it's the
1313 * connector. If it is the one that issued the connect, then
1314 * it's only chance is to be the first TCB in the list. If
1315 * it is the acceptor, then do the special_lookup to hash
1316 * and find the real inp.
1318 if ((inp->sctp_socket) && (inp->sctp_socket->so_qlimit)) {
1319 /* to is peer addr, from is my addr */
1320 stcb = sctp_tcb_special_locate(inp_p, remote, local,
1321 netp, inp->def_vrf_id);
1322 if ((stcb != NULL) && (locked_tcb == NULL)) {
1323 /* we have a locked tcb, lower refcount */
1324 SCTP_INP_DECR_REF(inp);
1326 if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
1327 SCTP_INP_RLOCK(locked_tcb->sctp_ep);
1328 SCTP_TCB_LOCK(locked_tcb);
1329 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1330 SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
1332 SCTP_INP_INFO_RUNLOCK();
1335 SCTP_INP_WLOCK(inp);
1336 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1339 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1343 SCTP_TCB_LOCK(stcb);
1345 if (stcb->rport != rport) {
1346 /* remote port does not match. */
1347 SCTP_TCB_UNLOCK(stcb);
1350 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1351 SCTP_TCB_UNLOCK(stcb);
1354 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1355 SCTP_TCB_UNLOCK(stcb);
1358 /* now look at the list of remote addresses */
1359 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1361 if (net == (TAILQ_NEXT(net, sctp_next))) {
1362 panic("Corrupt net list");
1365 if (net->ro._l_addr.sa.sa_family !=
1366 remote->sa_family) {
1367 /* not the same family */
1370 switch (remote->sa_family) {
1374 struct sockaddr_in *sin,
1377 sin = (struct sockaddr_in *)
1379 rsin = (struct sockaddr_in *)remote;
1380 if (sin->sin_addr.s_addr ==
1381 rsin->sin_addr.s_addr) {
1386 if (locked_tcb == NULL) {
1387 SCTP_INP_DECR_REF(inp);
1388 } else if (locked_tcb != stcb) {
1389 SCTP_TCB_LOCK(locked_tcb);
1392 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1394 SCTP_INP_WUNLOCK(inp);
1395 SCTP_INP_INFO_RUNLOCK();
1404 struct sockaddr_in6 *sin6,
1407 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1408 rsin6 = (struct sockaddr_in6 *)remote;
1409 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1415 if (locked_tcb == NULL) {
1416 SCTP_INP_DECR_REF(inp);
1417 } else if (locked_tcb != stcb) {
1418 SCTP_TCB_LOCK(locked_tcb);
1421 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1423 SCTP_INP_WUNLOCK(inp);
1424 SCTP_INP_INFO_RUNLOCK();
1435 SCTP_TCB_UNLOCK(stcb);
1438 SCTP_INP_WLOCK(inp);
1439 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1442 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport,
1443 inp->sctp_hashmark)];
1444 LIST_FOREACH(stcb, head, sctp_tcbhash) {
1445 if (stcb->rport != rport) {
1446 /* remote port does not match */
1449 SCTP_TCB_LOCK(stcb);
1450 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1451 SCTP_TCB_UNLOCK(stcb);
1454 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1455 SCTP_TCB_UNLOCK(stcb);
1458 /* now look at the list of remote addresses */
1459 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1461 if (net == (TAILQ_NEXT(net, sctp_next))) {
1462 panic("Corrupt net list");
1465 if (net->ro._l_addr.sa.sa_family !=
1466 remote->sa_family) {
1467 /* not the same family */
1470 switch (remote->sa_family) {
1474 struct sockaddr_in *sin,
1477 sin = (struct sockaddr_in *)
1479 rsin = (struct sockaddr_in *)remote;
1480 if (sin->sin_addr.s_addr ==
1481 rsin->sin_addr.s_addr) {
1486 if (locked_tcb == NULL) {
1487 SCTP_INP_DECR_REF(inp);
1488 } else if (locked_tcb != stcb) {
1489 SCTP_TCB_LOCK(locked_tcb);
1492 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1494 SCTP_INP_WUNLOCK(inp);
1495 SCTP_INP_INFO_RUNLOCK();
1504 struct sockaddr_in6 *sin6,
1507 sin6 = (struct sockaddr_in6 *)
1509 rsin6 = (struct sockaddr_in6 *)remote;
1510 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1516 if (locked_tcb == NULL) {
1517 SCTP_INP_DECR_REF(inp);
1518 } else if (locked_tcb != stcb) {
1519 SCTP_TCB_LOCK(locked_tcb);
1522 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1524 SCTP_INP_WUNLOCK(inp);
1525 SCTP_INP_INFO_RUNLOCK();
1536 SCTP_TCB_UNLOCK(stcb);
1540 /* clean up for returning null */
1542 SCTP_TCB_LOCK(locked_tcb);
1543 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1545 SCTP_INP_WUNLOCK(inp);
1546 SCTP_INP_INFO_RUNLOCK();
1553 * Find an association for a specific endpoint using the association id given
1554 * out in the COMM_UP notification
1557 sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1560 * Use my the assoc_id to find a endpoint
1562 struct sctpasochead *head;
1563 struct sctp_tcb *stcb;
1567 SCTP_PRINTF("TSNH ep_associd\n");
1570 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1571 SCTP_PRINTF("TSNH ep_associd0\n");
1574 id = (uint32_t) asoc_id;
1575 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
1577 /* invalid id TSNH */
1578 SCTP_PRINTF("TSNH ep_associd1\n");
1581 LIST_FOREACH(stcb, head, sctp_tcbasocidhash) {
1582 if (stcb->asoc.assoc_id == id) {
1583 if (inp != stcb->sctp_ep) {
1585 * some other guy has the same id active (id
1588 SCTP_PRINTF("TSNH ep_associd2\n");
1591 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1595 SCTP_TCB_LOCK(stcb);
1605 sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1607 struct sctp_tcb *stcb;
1609 SCTP_INP_RLOCK(inp);
1610 stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
1611 SCTP_INP_RUNLOCK(inp);
1617 * Endpoint probe expects that the INP_INFO is locked.
1619 static struct sctp_inpcb *
1620 sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head,
1621 uint16_t lport, uint32_t vrf_id)
1623 struct sctp_inpcb *inp;
1624 struct sctp_laddr *laddr;
1627 struct sockaddr_in *sin;
1631 struct sockaddr_in6 *sin6;
1632 struct sockaddr_in6 *intf_addr6;
1643 switch (nam->sa_family) {
1646 sin = (struct sockaddr_in *)nam;
1651 sin6 = (struct sockaddr_in6 *)nam;
1655 /* unsupported family */
1662 LIST_FOREACH(inp, head, sctp_hash) {
1663 SCTP_INP_RLOCK(inp);
1664 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1665 SCTP_INP_RUNLOCK(inp);
1668 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) &&
1669 (inp->sctp_lport == lport)) {
1671 switch (nam->sa_family) {
1674 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1675 SCTP_IPV6_V6ONLY(inp)) {
1677 * IPv4 on a IPv6 socket with ONLY
1680 SCTP_INP_RUNLOCK(inp);
1683 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
1684 &sin->sin_addr) != 0) {
1685 SCTP_INP_RUNLOCK(inp);
1693 * A V6 address and the endpoint is NOT
1696 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
1697 SCTP_INP_RUNLOCK(inp);
1700 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
1701 &sin6->sin6_addr) != 0) {
1702 SCTP_INP_RUNLOCK(inp);
1710 /* does a VRF id match? */
1712 if (inp->def_vrf_id == vrf_id)
1715 SCTP_INP_RUNLOCK(inp);
1720 SCTP_INP_RUNLOCK(inp);
1722 switch (nam->sa_family) {
1725 if (sin->sin_addr.s_addr == INADDR_ANY) {
1726 /* Can't hunt for one that has no address specified */
1733 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1734 /* Can't hunt for one that has no address specified */
1743 * ok, not bound to all so see if we can find a EP bound to this
1746 LIST_FOREACH(inp, head, sctp_hash) {
1747 SCTP_INP_RLOCK(inp);
1748 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1749 SCTP_INP_RUNLOCK(inp);
1752 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
1753 SCTP_INP_RUNLOCK(inp);
1757 * Ok this could be a likely candidate, look at all of its
1760 if (inp->sctp_lport != lport) {
1761 SCTP_INP_RUNLOCK(inp);
1764 /* does a VRF id match? */
1766 if (inp->def_vrf_id == vrf_id)
1770 SCTP_INP_RUNLOCK(inp);
1773 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1774 if (laddr->ifa == NULL) {
1775 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
1779 SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ",
1780 (void *)laddr->ifa);
1781 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1782 SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n");
1785 if (laddr->ifa->address.sa.sa_family == nam->sa_family) {
1786 /* possible, see if it matches */
1787 switch (nam->sa_family) {
1790 if (sin->sin_addr.s_addr ==
1791 laddr->ifa->address.sin.sin_addr.s_addr) {
1792 SCTP_INP_RUNLOCK(inp);
1799 intf_addr6 = &laddr->ifa->address.sin6;
1800 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1802 SCTP_INP_RUNLOCK(inp);
1810 SCTP_INP_RUNLOCK(inp);
1816 static struct sctp_inpcb *
1817 sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
1819 struct sctppcbhead *head;
1820 struct sctp_inpcb *t_inp;
1823 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1824 SCTP_BASE_INFO(hashmark))];
1825 LIST_FOREACH(t_inp, head, sctp_hash) {
1826 if (t_inp->sctp_lport != lport) {
1829 /* is it in the VRF in question */
1831 if (t_inp->def_vrf_id == vrf_id)
1836 /* This one is in use. */
1837 /* check the v6/v4 binding issue */
1838 if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1839 SCTP_IPV6_V6ONLY(t_inp)) {
1840 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1841 /* collision in V6 space */
1844 /* inp is BOUND_V4 no conflict */
1847 } else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1848 /* t_inp is bound v4 and v6, conflict always */
1851 /* t_inp is bound only V4 */
1852 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1853 SCTP_IPV6_V6ONLY(inp)) {
1857 /* else fall through to conflict */
1866 sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
1868 /* For 1-2-1 with port reuse */
1869 struct sctppcbhead *head;
1870 struct sctp_inpcb *tinp, *ninp;
1872 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
1873 /* only works with port reuse on */
1876 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) {
1879 SCTP_INP_RUNLOCK(inp);
1880 SCTP_INP_INFO_WLOCK();
1881 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport,
1882 SCTP_BASE_INFO(hashmark))];
1883 /* Kick out all non-listeners to the TCP hash */
1884 LIST_FOREACH_SAFE(tinp, head, sctp_hash, ninp) {
1885 if (tinp->sctp_lport != inp->sctp_lport) {
1888 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1891 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
1894 if (tinp->sctp_socket->so_qlimit) {
1897 SCTP_INP_WLOCK(tinp);
1898 LIST_REMOVE(tinp, sctp_hash);
1899 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))];
1900 tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
1901 LIST_INSERT_HEAD(head, tinp, sctp_hash);
1902 SCTP_INP_WUNLOCK(tinp);
1904 SCTP_INP_WLOCK(inp);
1905 /* Pull from where he was */
1906 LIST_REMOVE(inp, sctp_hash);
1907 inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL;
1908 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))];
1909 LIST_INSERT_HEAD(head, inp, sctp_hash);
1910 SCTP_INP_WUNLOCK(inp);
1911 SCTP_INP_RLOCK(inp);
1912 SCTP_INP_INFO_WUNLOCK();
1918 sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock,
1922 * First we check the hash table to see if someone has this port
1923 * bound with just the port.
1925 struct sctp_inpcb *inp;
1926 struct sctppcbhead *head;
1931 struct sockaddr_in *sin;
1935 struct sockaddr_in6 *sin6;
1939 switch (nam->sa_family) {
1942 sin = (struct sockaddr_in *)nam;
1943 lport = sin->sin_port;
1948 sin6 = (struct sockaddr_in6 *)nam;
1949 lport = sin6->sin6_port;
1956 * I could cheat here and just cast to one of the types but we will
1957 * do it right. It also provides the check against an Unsupported
1960 /* Find the head of the ALLADDR chain */
1961 if (have_lock == 0) {
1962 SCTP_INP_INFO_RLOCK();
1964 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1965 SCTP_BASE_INFO(hashmark))];
1966 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1969 * If the TCP model exists it could be that the main listening
1970 * endpoint is gone but there still exists a connected socket for
1971 * this guy. If so we can return the first one that we find. This
1972 * may NOT be the correct one so the caller should be wary on the
1973 * returned INP. Currently the only caller that sets find_tcp_pool
1974 * is in bindx where we are verifying that a user CAN bind the
1975 * address. He either has bound it already, or someone else has, or
1976 * its open to bind, so this is good enough.
1978 if (inp == NULL && find_tcp_pool) {
1979 for (i = 0; i < SCTP_BASE_INFO(hashtcpmark) + 1; i++) {
1980 head = &SCTP_BASE_INFO(sctp_tcpephash)[i];
1981 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1988 SCTP_INP_INCR_REF(inp);
1990 if (have_lock == 0) {
1991 SCTP_INP_INFO_RUNLOCK();
1998 * Find an association for an endpoint with the pointer to whom you want to
1999 * send to and the endpoint pointer. The address can be IPv4 or IPv6. We may
2000 * need to change the *to to some other struct like a mbuf...
2003 sctp_findassociation_addr_sa(struct sockaddr *from, struct sockaddr *to,
2004 struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool,
2007 struct sctp_inpcb *inp = NULL;
2008 struct sctp_tcb *stcb;
2010 SCTP_INP_INFO_RLOCK();
2011 if (find_tcp_pool) {
2012 if (inp_p != NULL) {
2013 stcb = sctp_tcb_special_locate(inp_p, from, to, netp,
2016 stcb = sctp_tcb_special_locate(&inp, from, to, netp,
2020 SCTP_INP_INFO_RUNLOCK();
2024 inp = sctp_pcb_findep(to, 0, 1, vrf_id);
2025 if (inp_p != NULL) {
2028 SCTP_INP_INFO_RUNLOCK();
2033 * ok, we have an endpoint, now lets find the assoc for it (if any)
2034 * we now place the source address or from in the to of the find
2035 * endpoint call. Since in reality this chain is used from the
2036 * inbound packet side.
2038 if (inp_p != NULL) {
2039 stcb = sctp_findassociation_ep_addr(inp_p, from, netp, to,
2042 stcb = sctp_findassociation_ep_addr(&inp, from, netp, to,
2050 * This routine will grub through the mbuf that is a INIT or INIT-ACK and
2051 * find all addresses that the sender has specified in any address list. Each
2052 * address will be used to lookup the TCB and see if one exits.
2054 static struct sctp_tcb *
2055 sctp_findassociation_special_addr(struct mbuf *m, int offset,
2056 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp,
2057 struct sockaddr *dst)
2059 struct sctp_paramhdr *phdr, parm_buf;
2061 #if defined(INET) || defined(INET6)
2062 struct sctp_tcb *stcb;
2069 struct sockaddr_in sin4;
2073 struct sockaddr_in6 sin6;
2078 memset(&sin4, 0, sizeof(sin4));
2079 sin4.sin_len = sizeof(sin4);
2080 sin4.sin_family = AF_INET;
2081 sin4.sin_port = sh->src_port;
2084 memset(&sin6, 0, sizeof(sin6));
2085 sin6.sin6_len = sizeof(sin6);
2086 sin6.sin6_family = AF_INET6;
2087 sin6.sin6_port = sh->src_port;
2090 offset += sizeof(struct sctp_init_chunk);
2092 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
2093 while (phdr != NULL) {
2094 /* now we must see if we want the parameter */
2095 #if defined(INET) || defined(INET6)
2096 ptype = ntohs(phdr->param_type);
2098 plen = ntohs(phdr->param_length);
2103 if (ptype == SCTP_IPV4_ADDRESS &&
2104 plen == sizeof(struct sctp_ipv4addr_param)) {
2105 /* Get the rest of the address */
2106 struct sctp_ipv4addr_param ip4_parm, *p4;
2108 phdr = sctp_get_next_param(m, offset,
2109 (struct sctp_paramhdr *)&ip4_parm, min(plen, sizeof(ip4_parm)));
2113 p4 = (struct sctp_ipv4addr_param *)phdr;
2114 memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr));
2116 stcb = sctp_findassociation_ep_addr(inp_p,
2117 (struct sockaddr *)&sin4, netp, dst, NULL);
2124 if (ptype == SCTP_IPV6_ADDRESS &&
2125 plen == sizeof(struct sctp_ipv6addr_param)) {
2126 /* Get the rest of the address */
2127 struct sctp_ipv6addr_param ip6_parm, *p6;
2129 phdr = sctp_get_next_param(m, offset,
2130 (struct sctp_paramhdr *)&ip6_parm, min(plen, sizeof(ip6_parm)));
2134 p6 = (struct sctp_ipv6addr_param *)phdr;
2135 memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr));
2137 stcb = sctp_findassociation_ep_addr(inp_p,
2138 (struct sockaddr *)&sin6, netp, dst, NULL);
2144 offset += SCTP_SIZE32(plen);
2145 phdr = sctp_get_next_param(m, offset, &parm_buf,
2151 static struct sctp_tcb *
2152 sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag,
2153 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport,
2154 uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
2157 * Use my vtag to hash. If we find it we then verify the source addr
2158 * is in the assoc. If all goes well we save a bit on rec of a
2161 struct sctpasochead *head;
2162 struct sctp_nets *net;
2163 struct sctp_tcb *stcb;
2165 SCTP_INP_INFO_RLOCK();
2166 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag,
2167 SCTP_BASE_INFO(hashasocmark))];
2168 LIST_FOREACH(stcb, head, sctp_asocs) {
2169 SCTP_INP_RLOCK(stcb->sctp_ep);
2170 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
2171 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2174 if (stcb->sctp_ep->def_vrf_id != vrf_id) {
2175 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2178 SCTP_TCB_LOCK(stcb);
2179 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2180 if (stcb->asoc.my_vtag == vtag) {
2182 if (stcb->rport != rport) {
2183 SCTP_TCB_UNLOCK(stcb);
2186 if (stcb->sctp_ep->sctp_lport != lport) {
2187 SCTP_TCB_UNLOCK(stcb);
2190 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
2191 SCTP_TCB_UNLOCK(stcb);
2194 /* RRS:Need toaddr check here */
2195 if (sctp_does_stcb_own_this_addr(stcb, to) == 0) {
2196 /* Endpoint does not own this address */
2197 SCTP_TCB_UNLOCK(stcb);
2202 * If we have both vtags that's all we match
2205 if (stcb->asoc.peer_vtag == remote_tag) {
2207 * If both tags match we consider it
2208 * conclusive and check NO
2209 * source/destination addresses
2214 if (skip_src_check) {
2217 *netp = sctp_findnet(stcb, from);
2219 *netp = NULL; /* unknown */
2222 *inp_p = stcb->sctp_ep;
2223 SCTP_INP_INFO_RUNLOCK();
2226 net = sctp_findnet(stcb, from);
2230 SCTP_STAT_INCR(sctps_vtagexpress);
2231 *inp_p = stcb->sctp_ep;
2232 SCTP_INP_INFO_RUNLOCK();
2236 * not him, this should only happen in rare
2237 * cases so I peg it.
2239 SCTP_STAT_INCR(sctps_vtagbogus);
2242 SCTP_TCB_UNLOCK(stcb);
2244 SCTP_INP_INFO_RUNLOCK();
2250 * Find an association with the pointer to the inbound IP packet. This can be
2251 * a IPv4 or IPv6 packet.
2254 sctp_findassociation_addr(struct mbuf *m, int offset,
2255 struct sockaddr *src, struct sockaddr *dst,
2256 struct sctphdr *sh, struct sctp_chunkhdr *ch,
2257 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2259 struct sctp_tcb *stcb;
2260 struct sctp_inpcb *inp;
2263 /* we only go down this path if vtag is non-zero */
2264 stcb = sctp_findassoc_by_vtag(src, dst, ntohl(sh->v_tag),
2265 inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0);
2271 stcb = sctp_findassociation_addr_sa(src, dst, inp_p, netp,
2275 stcb = sctp_findassociation_addr_sa(src, dst, &inp, netp,
2278 SCTPDBG(SCTP_DEBUG_PCB1, "stcb:%p inp:%p\n", (void *)stcb, (void *)inp);
2279 if (stcb == NULL && inp) {
2280 /* Found a EP but not this address */
2281 if ((ch->chunk_type == SCTP_INITIATION) ||
2282 (ch->chunk_type == SCTP_INITIATION_ACK)) {
2284 * special hook, we do NOT return linp or an
2285 * association that is linked to an existing
2286 * association that is under the TCP pool (i.e. no
2287 * listener exists). The endpoint finding routine
2288 * will always find a listener before examining the
2291 if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
2297 stcb = sctp_findassociation_special_addr(m,
2298 offset, sh, &inp, netp, dst);
2299 if (inp_p != NULL) {
2304 SCTPDBG(SCTP_DEBUG_PCB1, "stcb is %p\n", (void *)stcb);
2309 * lookup an association by an ASCONF lookup address.
2310 * if the lookup address is 0.0.0.0 or ::0, use the vtag to do the lookup
2313 sctp_findassociation_ep_asconf(struct mbuf *m, int offset,
2314 struct sockaddr *dst, struct sctphdr *sh,
2315 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2317 struct sctp_tcb *stcb;
2318 union sctp_sockstore remote_store;
2319 struct sctp_paramhdr parm_buf, *phdr;
2321 int zero_address = 0;
2324 struct sockaddr_in *sin;
2328 struct sockaddr_in6 *sin6;
2332 memset(&remote_store, 0, sizeof(remote_store));
2333 phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk),
2334 &parm_buf, sizeof(struct sctp_paramhdr));
2336 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n",
2340 ptype = (int)((uint32_t) ntohs(phdr->param_type));
2341 /* get the correlation address */
2344 case SCTP_IPV6_ADDRESS:
2346 /* ipv6 address param */
2347 struct sctp_ipv6addr_param *p6, p6_buf;
2349 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) {
2352 p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m,
2353 offset + sizeof(struct sctp_asconf_chunk),
2354 &p6_buf.ph, sizeof(*p6));
2356 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n",
2360 sin6 = &remote_store.sin6;
2361 sin6->sin6_family = AF_INET6;
2362 sin6->sin6_len = sizeof(*sin6);
2363 sin6->sin6_port = sh->src_port;
2364 memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr));
2365 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
2371 case SCTP_IPV4_ADDRESS:
2373 /* ipv4 address param */
2374 struct sctp_ipv4addr_param *p4, p4_buf;
2376 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) {
2379 p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m,
2380 offset + sizeof(struct sctp_asconf_chunk),
2381 &p4_buf.ph, sizeof(*p4));
2383 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n",
2387 sin = &remote_store.sin;
2388 sin->sin_family = AF_INET;
2389 sin->sin_len = sizeof(*sin);
2390 sin->sin_port = sh->src_port;
2391 memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr));
2392 if (sin->sin_addr.s_addr == INADDR_ANY)
2398 /* invalid address param type */
2403 stcb = sctp_findassoc_by_vtag(NULL, dst, ntohl(sh->v_tag), inp_p,
2404 netp, sh->src_port, sh->dest_port, 1, vrf_id, 0);
2406 SCTP_INP_DECR_REF(*inp_p);
2409 stcb = sctp_findassociation_ep_addr(inp_p,
2410 &remote_store.sa, netp,
2418 * allocate a sctp_inpcb and setup a temporary binding to a port/all
2419 * addresses. This way if we don't get a bind we by default pick a ephemeral
2420 * port with all addresses bound.
2423 sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
2426 * we get called when a new endpoint starts up. We need to allocate
2427 * the sctp_inpcb structure from the zone and init it. Mark it as
2428 * unbound and find a port that we can use as an ephemeral with
2429 * INADDR_ANY. If the user binds later no problem we can then add in
2430 * the specific addresses. And setup the default parameters for the
2434 struct sctp_inpcb *inp;
2436 struct timeval time;
2437 sctp_sharedkey_t *null_key;
2441 SCTP_INP_INFO_WLOCK();
2442 inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb);
2444 SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n");
2445 SCTP_INP_INFO_WUNLOCK();
2446 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2450 bzero(inp, sizeof(*inp));
2452 /* bump generations */
2453 /* setup socket pointers */
2454 inp->sctp_socket = so;
2455 inp->ip_inp.inp.inp_socket = so;
2456 inp->ip_inp.inp.inp_cred = crhold(so->so_cred);
2458 if (INP_SOCKAF(so) == AF_INET6) {
2459 if (MODULE_GLOBAL(ip6_auto_flowlabel)) {
2460 inp->ip_inp.inp.inp_flags |= IN6P_AUTOFLOWLABEL;
2462 if (MODULE_GLOBAL(ip6_v6only)) {
2463 inp->ip_inp.inp.inp_flags |= IN6P_IPV6_V6ONLY;
2467 inp->sctp_associd_counter = 1;
2468 inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT;
2469 inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
2471 inp->sctp_cmt_on_off = SCTP_BASE_SYSCTL(sctp_cmt_on_off);
2472 inp->ecn_supported = (uint8_t) SCTP_BASE_SYSCTL(sctp_ecn_enable);
2473 inp->prsctp_supported = (uint8_t) SCTP_BASE_SYSCTL(sctp_pr_enable);
2474 inp->auth_supported = (uint8_t) SCTP_BASE_SYSCTL(sctp_auth_enable);
2475 inp->asconf_supported = (uint8_t) SCTP_BASE_SYSCTL(sctp_asconf_enable);
2476 inp->reconfig_supported = (uint8_t) SCTP_BASE_SYSCTL(sctp_reconfig_enable);
2477 inp->nrsack_supported = (uint8_t) SCTP_BASE_SYSCTL(sctp_nrsack_enable);
2478 inp->pktdrop_supported = (uint8_t) SCTP_BASE_SYSCTL(sctp_pktdrop_enable);
2479 inp->idata_supported = 0;
2481 inp->fibnum = so->so_fibnum;
2482 /* init the small hash table we use to track asocid <-> tcb */
2483 inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark);
2484 if (inp->sctp_asocidhash == NULL) {
2485 crfree(inp->ip_inp.inp.inp_cred);
2486 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2487 SCTP_INP_INFO_WUNLOCK();
2491 error = ipsec_init_policy(so, &inp->ip_inp.inp.inp_sp);
2493 crfree(inp->ip_inp.inp.inp_cred);
2494 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2495 SCTP_INP_INFO_WUNLOCK();
2499 SCTP_INCR_EP_COUNT();
2500 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
2501 SCTP_INP_INFO_WUNLOCK();
2503 so->so_pcb = (caddr_t)inp;
2505 if (SCTP_SO_TYPE(so) == SOCK_SEQPACKET) {
2506 /* UDP style socket */
2507 inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
2508 SCTP_PCB_FLAGS_UNBOUND);
2509 /* Be sure it is NON-BLOCKING IO for UDP */
2510 /* SCTP_SET_SO_NBIO(so); */
2511 } else if (SCTP_SO_TYPE(so) == SOCK_STREAM) {
2512 /* TCP style socket */
2513 inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
2514 SCTP_PCB_FLAGS_UNBOUND);
2515 /* Be sure we have blocking IO by default */
2516 SCTP_CLEAR_SO_NBIO(so);
2519 * unsupported socket type (RAW, etc)- in case we missed it
2522 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
2524 crfree(inp->ip_inp.inp.inp_cred);
2526 ipsec_delete_pcbpolicy(&inp->ip_inp.inp);
2528 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2529 return (EOPNOTSUPP);
2531 if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) {
2532 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2533 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2534 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) {
2535 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2536 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2537 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) {
2538 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2539 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2541 inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize),
2542 &inp->sctp_hashmark);
2543 if (inp->sctp_tcbhash == NULL) {
2544 SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
2545 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2547 crfree(inp->ip_inp.inp.inp_cred);
2549 ipsec_delete_pcbpolicy(&inp->ip_inp.inp);
2551 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2554 inp->def_vrf_id = vrf_id;
2556 SCTP_INP_INFO_WLOCK();
2557 SCTP_INP_LOCK_INIT(inp);
2558 INP_LOCK_INIT(&inp->ip_inp.inp, "inp", "sctpinp");
2559 SCTP_INP_READ_INIT(inp);
2560 SCTP_ASOC_CREATE_LOCK_INIT(inp);
2561 /* lock the new ep */
2562 SCTP_INP_WLOCK(inp);
2564 /* add it to the info area */
2565 LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list);
2566 SCTP_INP_INFO_WUNLOCK();
2568 TAILQ_INIT(&inp->read_queue);
2569 LIST_INIT(&inp->sctp_addr_list);
2571 LIST_INIT(&inp->sctp_asoc_list);
2573 #ifdef SCTP_TRACK_FREED_ASOCS
2575 LIST_INIT(&inp->sctp_asoc_free_list);
2577 /* Init the timer structure for signature change */
2578 SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer);
2579 inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE;
2581 /* now init the actual endpoint default data */
2584 /* setup the base timeout information */
2585 m->sctp_timeoutticks[SCTP_TIMER_SEND] = SEC_TO_TICKS(SCTP_SEND_SEC); /* needed ? */
2586 m->sctp_timeoutticks[SCTP_TIMER_INIT] = SEC_TO_TICKS(SCTP_INIT_SEC); /* needed ? */
2587 m->sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default));
2588 m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default));
2589 m->sctp_timeoutticks[SCTP_TIMER_PMTU] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default));
2590 m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default));
2591 m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default));
2592 /* all max/min max are in ms */
2593 m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default);
2594 m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default);
2595 m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default);
2596 m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default);
2597 m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default);
2598 m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default);
2599 m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default);
2600 m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default);
2601 m->def_net_pf_threshold = SCTP_BASE_SYSCTL(sctp_path_pf_threshold);
2602 m->sctp_sws_sender = SCTP_SWS_SENDER_DEF;
2603 m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF;
2604 m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default);
2605 m->fr_max_burst = SCTP_BASE_SYSCTL(sctp_fr_max_burst_default);
2607 m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module);
2608 m->sctp_default_ss_module = SCTP_BASE_SYSCTL(sctp_default_ss_module);
2609 m->max_open_streams_intome = SCTP_BASE_SYSCTL(sctp_nr_incoming_streams_default);
2610 /* number of streams to pre-open on a association */
2611 m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default);
2613 /* Add adaptation cookie */
2614 m->adaptation_layer_indicator = 0;
2615 m->adaptation_layer_indicator_provided = 0;
2617 /* seed random number generator */
2618 m->random_counter = 1;
2619 m->store_at = SCTP_SIGNATURE_SIZE;
2620 SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers));
2621 sctp_fill_random_store(m);
2623 /* Minimum cookie size */
2624 m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) +
2625 sizeof(struct sctp_state_cookie);
2626 m->size_of_a_cookie += SCTP_SIGNATURE_SIZE;
2628 /* Setup the initial secret */
2629 (void)SCTP_GETTIME_TIMEVAL(&time);
2630 m->time_of_secret_change = time.tv_sec;
2632 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
2633 m->secret_key[0][i] = sctp_select_initial_TSN(m);
2635 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
2637 /* How long is a cookie good for ? */
2638 m->def_cookie_life = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default));
2640 * Initialize authentication parameters
2642 m->local_hmacs = sctp_default_supported_hmaclist();
2643 m->local_auth_chunks = sctp_alloc_chunklist();
2644 if (inp->asconf_supported) {
2645 sctp_auth_add_chunk(SCTP_ASCONF, m->local_auth_chunks);
2646 sctp_auth_add_chunk(SCTP_ASCONF_ACK, m->local_auth_chunks);
2648 m->default_dscp = 0;
2650 m->default_flowlabel = 0;
2652 m->port = 0; /* encapsulation disabled by default */
2653 LIST_INIT(&m->shared_keys);
2654 /* add default NULL key as key id 0 */
2655 null_key = sctp_alloc_sharedkey();
2656 sctp_insert_sharedkey(&m->shared_keys, null_key);
2657 SCTP_INP_WUNLOCK(inp);
2658 #ifdef SCTP_LOG_CLOSING
2659 sctp_log_closing(inp, NULL, 12);
2666 sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp,
2667 struct sctp_tcb *stcb)
2669 struct sctp_nets *net;
2670 uint16_t lport, rport;
2671 struct sctppcbhead *head;
2672 struct sctp_laddr *laddr, *oladdr;
2674 atomic_add_int(&stcb->asoc.refcnt, 1);
2675 SCTP_TCB_UNLOCK(stcb);
2676 SCTP_INP_INFO_WLOCK();
2677 SCTP_INP_WLOCK(old_inp);
2678 SCTP_INP_WLOCK(new_inp);
2679 SCTP_TCB_LOCK(stcb);
2680 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2682 new_inp->sctp_ep.time_of_secret_change =
2683 old_inp->sctp_ep.time_of_secret_change;
2684 memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key,
2685 sizeof(old_inp->sctp_ep.secret_key));
2686 new_inp->sctp_ep.current_secret_number =
2687 old_inp->sctp_ep.current_secret_number;
2688 new_inp->sctp_ep.last_secret_number =
2689 old_inp->sctp_ep.last_secret_number;
2690 new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie;
2692 /* make it so new data pours into the new socket */
2693 stcb->sctp_socket = new_inp->sctp_socket;
2694 stcb->sctp_ep = new_inp;
2696 /* Copy the port across */
2697 lport = new_inp->sctp_lport = old_inp->sctp_lport;
2698 rport = stcb->rport;
2699 /* Pull the tcb from the old association */
2700 LIST_REMOVE(stcb, sctp_tcbhash);
2701 LIST_REMOVE(stcb, sctp_tcblist);
2702 if (stcb->asoc.in_asocid_hash) {
2703 LIST_REMOVE(stcb, sctp_tcbasocidhash);
2705 /* Now insert the new_inp into the TCP connected hash */
2706 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
2708 LIST_INSERT_HEAD(head, new_inp, sctp_hash);
2709 /* Its safe to access */
2710 new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
2712 /* Now move the tcb into the endpoint list */
2713 LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist);
2715 * Question, do we even need to worry about the ep-hash since we
2716 * only have one connection? Probably not :> so lets get rid of it
2717 * and not suck up any kernel memory in that.
2719 if (stcb->asoc.in_asocid_hash) {
2720 struct sctpasochead *lhd;
2722 lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id,
2723 new_inp->hashasocidmark)];
2724 LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash);
2726 /* Ok. Let's restart timer. */
2727 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2728 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp,
2732 SCTP_INP_INFO_WUNLOCK();
2733 if (new_inp->sctp_tcbhash != NULL) {
2734 SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark);
2735 new_inp->sctp_tcbhash = NULL;
2737 if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2738 /* Subset bound, so copy in the laddr list from the old_inp */
2739 LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) {
2740 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2741 if (laddr == NULL) {
2743 * Gak, what can we do? This assoc is really
2744 * HOSED. We probably should send an abort
2747 SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n");
2750 SCTP_INCR_LADDR_COUNT();
2751 bzero(laddr, sizeof(*laddr));
2752 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2753 laddr->ifa = oladdr->ifa;
2754 atomic_add_int(&laddr->ifa->refcount, 1);
2755 LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr,
2757 new_inp->laddr_count++;
2758 if (oladdr == stcb->asoc.last_used_address) {
2759 stcb->asoc.last_used_address = laddr;
2764 * Now any running timers need to be adjusted since we really don't
2765 * care if they are running or not just blast in the new_inp into
2769 stcb->asoc.dack_timer.ep = (void *)new_inp;
2770 stcb->asoc.asconf_timer.ep = (void *)new_inp;
2771 stcb->asoc.strreset_timer.ep = (void *)new_inp;
2772 stcb->asoc.shut_guard_timer.ep = (void *)new_inp;
2773 stcb->asoc.autoclose_timer.ep = (void *)new_inp;
2774 stcb->asoc.delayed_event_timer.ep = (void *)new_inp;
2775 stcb->asoc.delete_prim_timer.ep = (void *)new_inp;
2776 /* now what about the nets? */
2777 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2778 net->pmtu_timer.ep = (void *)new_inp;
2779 net->hb_timer.ep = (void *)new_inp;
2780 net->rxt_timer.ep = (void *)new_inp;
2782 SCTP_INP_WUNLOCK(new_inp);
2783 SCTP_INP_WUNLOCK(old_inp);
2787 * insert an laddr entry with the given ifa for the desired list
2790 sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
2792 struct sctp_laddr *laddr;
2794 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2795 if (laddr == NULL) {
2796 /* out of memory? */
2797 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2800 SCTP_INCR_LADDR_COUNT();
2801 bzero(laddr, sizeof(*laddr));
2802 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2804 laddr->action = act;
2805 atomic_add_int(&ifa->refcount, 1);
2807 LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr);
2813 * Remove an laddr entry from the local address list (on an assoc)
2816 sctp_remove_laddr(struct sctp_laddr *laddr)
2819 /* remove from the list */
2820 LIST_REMOVE(laddr, sctp_nxt_addr);
2821 sctp_free_ifa(laddr->ifa);
2822 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr);
2823 SCTP_DECR_LADDR_COUNT();
2828 /* sctp_ifap is used to bypass normal local address validation checks */
2830 sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
2831 struct sctp_ifa *sctp_ifap, struct thread *p)
2833 /* bind a ep to a socket address */
2834 struct sctppcbhead *head;
2835 struct sctp_inpcb *inp, *inp_tmp;
2836 struct inpcb *ip_inp;
2837 int port_reuse_active = 0;
2845 inp = (struct sctp_inpcb *)so->so_pcb;
2846 ip_inp = (struct inpcb *)so->so_pcb;
2849 SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port: %d\n",
2850 ntohs(((struct sockaddr_in *)addr)->sin_port));
2851 SCTPDBG(SCTP_DEBUG_PCB1, "Addr: ");
2852 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
2855 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2856 /* already did a bind, subsequent binds NOT allowed ! */
2857 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2862 panic("null proc/thread");
2865 switch (addr->sa_family) {
2869 struct sockaddr_in *sin;
2871 /* IPV6_V6ONLY socket? */
2872 if (SCTP_IPV6_V6ONLY(ip_inp)) {
2873 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2876 if (addr->sa_len != sizeof(*sin)) {
2877 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2880 sin = (struct sockaddr_in *)addr;
2881 lport = sin->sin_port;
2883 * For LOOPBACK the prison_local_ip4() call
2884 * will transmute the ip address to the
2887 if (p && (error = prison_local_ip4(p->td_ucred, &sin->sin_addr)) != 0) {
2888 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2891 if (sin->sin_addr.s_addr != INADDR_ANY) {
2901 * Only for pure IPv6 Address. (No IPv4
2904 struct sockaddr_in6 *sin6;
2906 sin6 = (struct sockaddr_in6 *)addr;
2908 if (addr->sa_len != sizeof(*sin6)) {
2909 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2912 lport = sin6->sin6_port;
2914 * For LOOPBACK the prison_local_ip6() call
2915 * will transmute the ipv6 address to the
2918 if (p && (error = prison_local_ip6(p->td_ucred, &sin6->sin6_addr,
2919 (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
2920 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2923 if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2925 /* KAME hack: embed scopeid */
2926 if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
2927 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2931 /* this must be cleared for ifa_ifwithaddr() */
2932 sin6->sin6_scope_id = 0;
2937 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EAFNOSUPPORT);
2938 return (EAFNOSUPPORT);
2941 SCTP_INP_INFO_WLOCK();
2942 SCTP_INP_WLOCK(inp);
2943 /* Setup a vrf_id to be the default for the non-bind-all case. */
2944 vrf_id = inp->def_vrf_id;
2946 /* increase our count due to the unlock we do */
2947 SCTP_INP_INCR_REF(inp);
2950 * Did the caller specify a port? if so we must see if an ep
2951 * already has this one bound.
2953 /* got to be root to get at low ports */
2954 if (ntohs(lport) < IPPORT_RESERVED) {
2956 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2958 SCTP_INP_DECR_REF(inp);
2959 SCTP_INP_WUNLOCK(inp);
2960 SCTP_INP_INFO_WUNLOCK();
2964 SCTP_INP_WUNLOCK(inp);
2966 vrf_id = inp->def_vrf_id;
2967 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2968 if (inp_tmp != NULL) {
2970 * lock guy returned and lower count note
2971 * that we are not bound so inp_tmp should
2972 * NEVER be inp. And it is this inp
2973 * (inp_tmp) that gets the reference bump,
2974 * so we must lower it.
2976 SCTP_INP_DECR_REF(inp_tmp);
2978 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2979 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2981 * Ok, must be one-2-one and
2982 * allowing port re-use
2984 port_reuse_active = 1;
2985 goto continue_anyway;
2987 SCTP_INP_DECR_REF(inp);
2988 SCTP_INP_INFO_WUNLOCK();
2989 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2990 return (EADDRINUSE);
2993 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2994 if (inp_tmp != NULL) {
2996 * lock guy returned and lower count note
2997 * that we are not bound so inp_tmp should
2998 * NEVER be inp. And it is this inp
2999 * (inp_tmp) that gets the reference bump,
3000 * so we must lower it.
3002 SCTP_INP_DECR_REF(inp_tmp);
3004 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
3005 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
3007 * Ok, must be one-2-one and
3008 * allowing port re-use
3010 port_reuse_active = 1;
3011 goto continue_anyway;
3013 SCTP_INP_DECR_REF(inp);
3014 SCTP_INP_INFO_WUNLOCK();
3015 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3016 return (EADDRINUSE);
3020 SCTP_INP_WLOCK(inp);
3022 /* verify that no lport is not used by a singleton */
3023 if ((port_reuse_active == 0) &&
3024 (inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))) {
3025 /* Sorry someone already has this one bound */
3026 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
3027 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
3028 port_reuse_active = 1;
3030 SCTP_INP_DECR_REF(inp);
3031 SCTP_INP_WUNLOCK(inp);
3032 SCTP_INP_INFO_WUNLOCK();
3033 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3034 return (EADDRINUSE);
3039 uint16_t first, last, candidate;
3043 if (ip_inp->inp_flags & INP_HIGHPORT) {
3044 first = MODULE_GLOBAL(ipport_hifirstauto);
3045 last = MODULE_GLOBAL(ipport_hilastauto);
3046 } else if (ip_inp->inp_flags & INP_LOWPORT) {
3048 priv_check(p, PRIV_NETINET_RESERVEDPORT)
3050 SCTP_INP_DECR_REF(inp);
3051 SCTP_INP_WUNLOCK(inp);
3052 SCTP_INP_INFO_WUNLOCK();
3053 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
3056 first = MODULE_GLOBAL(ipport_lowfirstauto);
3057 last = MODULE_GLOBAL(ipport_lowlastauto);
3059 first = MODULE_GLOBAL(ipport_firstauto);
3060 last = MODULE_GLOBAL(ipport_lastauto);
3069 count = last - first + 1; /* number of candidates */
3070 candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count);
3074 if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) {
3079 SCTP_INP_DECR_REF(inp);
3080 SCTP_INP_WUNLOCK(inp);
3081 SCTP_INP_INFO_WUNLOCK();
3082 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3083 return (EADDRINUSE);
3085 if (candidate == last)
3088 candidate = candidate + 1;
3091 lport = htons(candidate);
3093 SCTP_INP_DECR_REF(inp);
3094 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE |
3095 SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
3097 * this really should not happen. The guy did a non-blocking
3098 * bind and then did a close at the same time.
3100 SCTP_INP_WUNLOCK(inp);
3101 SCTP_INP_INFO_WUNLOCK();
3102 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3105 /* ok we look clear to give out this port, so lets setup the binding */
3107 /* binding to all addresses, so just set in the proper flags */
3108 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL;
3109 /* set the automatic addr changes from kernel flag */
3110 if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) {
3111 sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3112 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3114 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3115 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3117 if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) {
3118 sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3120 sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3123 * set the automatic mobility_base from kernel flag (by
3126 if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) {
3127 sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE);
3128 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3130 sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE);
3131 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3134 * set the automatic mobility_fasthandoff from kernel flag
3137 if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) {
3138 sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF);
3139 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3141 sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF);
3142 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3146 * bind specific, make sure flags is off and add a new
3147 * address structure to the sctp_addr_list inside the ep
3150 * We will need to allocate one and insert it at the head. The
3151 * socketopt call can just insert new addresses in there as
3152 * well. It will also have to do the embed scope kame hack
3153 * too (before adding).
3155 struct sctp_ifa *ifa;
3156 union sctp_sockstore store;
3158 memset(&store, 0, sizeof(store));
3159 switch (addr->sa_family) {
3162 memcpy(&store.sin, addr, sizeof(struct sockaddr_in));
3163 store.sin.sin_port = 0;
3168 memcpy(&store.sin6, addr, sizeof(struct sockaddr_in6));
3169 store.sin6.sin6_port = 0;
3176 * first find the interface with the bound address need to
3177 * zero out the port to find the address! yuck! can't do
3178 * this earlier since need port for sctp_pcb_findep()
3180 if (sctp_ifap != NULL) {
3184 * Note for BSD we hit here always other O/S's will
3185 * pass things in via the sctp_ifap argument
3188 ifa = sctp_find_ifa_by_addr(&store.sa,
3189 vrf_id, SCTP_ADDR_NOT_LOCKED);
3192 /* Can't find an interface with that address */
3193 SCTP_INP_WUNLOCK(inp);
3194 SCTP_INP_INFO_WUNLOCK();
3195 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRNOTAVAIL);
3196 return (EADDRNOTAVAIL);
3199 if (addr->sa_family == AF_INET6) {
3200 /* GAK, more FIXME IFA lock? */
3201 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
3202 /* Can't bind a non-existent addr. */
3203 SCTP_INP_WUNLOCK(inp);
3204 SCTP_INP_INFO_WUNLOCK();
3205 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3210 /* we're not bound all */
3211 inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL;
3212 /* allow bindx() to send ASCONF's for binding changes */
3213 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3214 /* clear automatic addr changes from kernel flag */
3215 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3217 /* add this address to the endpoint list */
3218 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0);
3220 SCTP_INP_WUNLOCK(inp);
3221 SCTP_INP_INFO_WUNLOCK();
3226 /* find the bucket */
3227 if (port_reuse_active) {
3228 /* Put it into tcp 1-2-1 hash */
3229 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))];
3230 inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
3232 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))];
3234 /* put it in the bucket */
3235 LIST_INSERT_HEAD(head, inp, sctp_hash);
3236 SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n",
3237 (void *)head, ntohs(lport), port_reuse_active);
3238 /* set in the port */
3239 inp->sctp_lport = lport;
3241 /* turn off just the unbound flag */
3242 inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
3243 SCTP_INP_WUNLOCK(inp);
3244 SCTP_INP_INFO_WUNLOCK();
3250 sctp_iterator_inp_being_freed(struct sctp_inpcb *inp)
3252 struct sctp_iterator *it, *nit;
3255 * We enter with the only the ITERATOR_LOCK in place and a write
3256 * lock on the inp_info stuff.
3258 it = sctp_it_ctl.cur_it;
3259 if (it && (it->vn != curvnet)) {
3260 /* Its not looking at our VNET */
3263 if (it && (it->inp == inp)) {
3265 * This is tricky and we hold the iterator lock, but when it
3266 * returns and gets the lock (when we release it) the
3267 * iterator will try to operate on inp. We need to stop that
3268 * from happening. But of course the iterator has a
3269 * reference on the stcb and inp. We can mark it and it will
3272 * If its a single iterator situation, we set the end iterator
3273 * flag. Otherwise we set the iterator to go to the next
3277 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3278 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
3280 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_INP;
3284 * Now go through and remove any single reference to our inp that
3285 * may be still pending on the list
3287 SCTP_IPI_ITERATOR_WQ_LOCK();
3288 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
3289 if (it->vn != curvnet) {
3292 if (it->inp == inp) {
3293 /* This one points to me is it inp specific? */
3294 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3295 /* Remove and free this one */
3296 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
3298 if (it->function_atend != NULL) {
3299 (*it->function_atend) (it->pointer, it->val);
3301 SCTP_FREE(it, SCTP_M_ITER);
3303 it->inp = LIST_NEXT(it->inp, sctp_list);
3305 SCTP_INP_INCR_REF(it->inp);
3309 * When its put in the refcnt is incremented so decr
3312 SCTP_INP_DECR_REF(inp);
3315 SCTP_IPI_ITERATOR_WQ_UNLOCK();
3318 /* release sctp_inpcb unbind the port */
3320 sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
3323 * Here we free a endpoint. We must find it (if it is in the Hash
3324 * table) and remove it from there. Then we must also find it in the
3325 * overall list and remove it from there. After all removals are
3326 * complete then any timer has to be stopped. Then start the actual
3327 * freeing. a) Any local lists. b) Any associations. c) The hash of
3328 * all associations. d) finally the ep itself.
3330 struct sctp_tcb *asoc, *nasoc;
3331 struct sctp_laddr *laddr, *nladdr;
3332 struct inpcb *ip_pcb;
3334 int being_refed = 0;
3335 struct sctp_queued_to_read *sq, *nsq;
3337 sctp_sharedkey_t *shared_key, *nshared_key;
3340 #ifdef SCTP_LOG_CLOSING
3341 sctp_log_closing(inp, NULL, 0);
3343 SCTP_ITERATOR_LOCK();
3344 /* mark any iterators on the list or being processed */
3345 sctp_iterator_inp_being_freed(inp);
3346 SCTP_ITERATOR_UNLOCK();
3347 so = inp->sctp_socket;
3348 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
3349 /* been here before.. eeks.. get out of here */
3350 SCTP_PRINTF("This conflict in free SHOULD not be happening! from %d, imm %d\n", from, immediate);
3351 #ifdef SCTP_LOG_CLOSING
3352 sctp_log_closing(inp, NULL, 1);
3356 SCTP_ASOC_CREATE_LOCK(inp);
3357 SCTP_INP_INFO_WLOCK();
3359 SCTP_INP_WLOCK(inp);
3360 if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
3361 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP;
3362 /* socket is gone, so no more wakeups allowed */
3363 inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE;
3364 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
3365 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
3368 /* First time through we have the socket lock, after that no more. */
3369 sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL,
3370 SCTP_FROM_SCTP_PCB + SCTP_LOC_1);
3373 sctp_m_freem(inp->control);
3374 inp->control = NULL;
3377 sctp_m_freem(inp->pkt);
3380 ip_pcb = &inp->ip_inp.inp; /* we could just cast the main pointer
3381 * here but I will be nice :> (i.e.
3383 if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
3387 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3388 SCTP_TCB_LOCK(asoc);
3389 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3390 /* Skip guys being freed */
3392 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3394 * Special case - we did not start a
3395 * kill timer on the asoc due to it
3396 * was not closed. So go ahead and
3399 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3400 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3402 SCTP_TCB_UNLOCK(asoc);
3405 if (((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_WAIT) ||
3406 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_ECHOED)) &&
3407 (asoc->asoc.total_output_queue_size == 0)) {
3409 * If we have data in queue, we don't want
3410 * to just free since the app may have done,
3411 * send()/close or connect/send/close. And
3412 * it wants the data to get across first.
3414 /* Just abandon things in the front states */
3415 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE,
3416 SCTP_FROM_SCTP_PCB + SCTP_LOC_2) == 0) {
3421 /* Disconnect the socket please */
3422 asoc->sctp_socket = NULL;
3423 asoc->asoc.state |= SCTP_STATE_CLOSED_SOCKET;
3424 if ((asoc->asoc.size_on_reasm_queue > 0) ||
3425 (asoc->asoc.control_pdapi) ||
3426 (asoc->asoc.size_on_all_streams > 0) ||
3427 (so && (so->so_rcv.sb_cc > 0))) {
3428 /* Left with Data unread */
3429 struct mbuf *op_err;
3431 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3432 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_3;
3433 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3434 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3435 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3436 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3437 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3439 if (sctp_free_assoc(inp, asoc,
3440 SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_4) == 0) {
3444 } else if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3445 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3446 (asoc->asoc.stream_queue_cnt == 0)) {
3447 if (asoc->asoc.locked_on_sending) {
3450 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
3451 (SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
3452 struct sctp_nets *netp;
3455 * there is nothing queued to send,
3456 * so I send shutdown
3458 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3459 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3460 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3462 SCTP_SET_STATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_SENT);
3463 SCTP_CLEAR_SUBSTATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_PENDING);
3464 sctp_stop_timers_for_shutdown(asoc);
3465 if (asoc->asoc.alternate) {
3466 netp = asoc->asoc.alternate;
3468 netp = asoc->asoc.primary_destination;
3470 sctp_send_shutdown(asoc, netp);
3471 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, asoc->sctp_ep, asoc,
3473 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3474 asoc->asoc.primary_destination);
3475 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED);
3478 /* mark into shutdown pending */
3479 struct sctp_stream_queue_pending *sp;
3481 asoc->asoc.state |= SCTP_STATE_SHUTDOWN_PENDING;
3482 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3483 asoc->asoc.primary_destination);
3484 if (asoc->asoc.locked_on_sending) {
3485 sp = TAILQ_LAST(&((asoc->asoc.locked_on_sending)->outqueue),
3488 SCTP_PRINTF("Error, sp is NULL, locked on sending is %p strm:%d\n",
3489 (void *)asoc->asoc.locked_on_sending,
3490 asoc->asoc.locked_on_sending->stream_no);
3492 if ((sp->length == 0) && (sp->msg_is_complete == 0))
3493 asoc->asoc.state |= SCTP_STATE_PARTIAL_MSG_LEFT;
3496 if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3497 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3498 (asoc->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
3499 struct mbuf *op_err;
3502 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3503 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_5;
3504 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3505 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3506 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3507 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3508 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3510 if (sctp_free_assoc(inp, asoc,
3511 SCTP_PCBFREE_NOFORCE,
3512 SCTP_FROM_SCTP_PCB + SCTP_LOC_6) == 0) {
3517 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
3521 SCTP_TCB_UNLOCK(asoc);
3523 /* now is there some left in our SHUTDOWN state? */
3525 #ifdef SCTP_LOG_CLOSING
3526 sctp_log_closing(inp, NULL, 2);
3528 inp->sctp_socket = NULL;
3529 SCTP_INP_WUNLOCK(inp);
3530 SCTP_ASOC_CREATE_UNLOCK(inp);
3531 SCTP_INP_INFO_WUNLOCK();
3535 inp->sctp_socket = NULL;
3536 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) !=
3537 SCTP_PCB_FLAGS_UNBOUND) {
3539 * ok, this guy has been bound. It's port is somewhere in
3540 * the SCTP_BASE_INFO(hash table). Remove it!
3542 LIST_REMOVE(inp, sctp_hash);
3543 inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND;
3546 * If there is a timer running to kill us, forget it, since it may
3547 * have a contest on the INP lock.. which would cause us to die ...
3550 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3551 SCTP_TCB_LOCK(asoc);
3552 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3553 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3554 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3555 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3558 SCTP_TCB_UNLOCK(asoc);
3561 /* Free associations that are NOT killing us */
3562 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_COOKIE_WAIT) &&
3563 ((asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) {
3564 struct mbuf *op_err;
3566 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3567 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_7;
3568 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3569 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3570 } else if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3572 SCTP_TCB_UNLOCK(asoc);
3575 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3576 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3577 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3579 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_FORCE,
3580 SCTP_FROM_SCTP_PCB + SCTP_LOC_8) == 0) {
3585 /* Ok we have someone out there that will kill us */
3586 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3587 #ifdef SCTP_LOG_CLOSING
3588 sctp_log_closing(inp, NULL, 3);
3590 SCTP_INP_WUNLOCK(inp);
3591 SCTP_ASOC_CREATE_UNLOCK(inp);
3592 SCTP_INP_INFO_WUNLOCK();
3595 if (SCTP_INP_LOCK_CONTENDED(inp))
3597 if (SCTP_INP_READ_CONTENDED(inp))
3599 if (SCTP_ASOC_CREATE_LOCK_CONTENDED(inp))
3602 if ((inp->refcount) ||
3604 (inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) {
3605 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3606 #ifdef SCTP_LOG_CLOSING
3607 sctp_log_closing(inp, NULL, 4);
3609 sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
3610 SCTP_INP_WUNLOCK(inp);
3611 SCTP_ASOC_CREATE_UNLOCK(inp);
3612 SCTP_INP_INFO_WUNLOCK();
3615 inp->sctp_ep.signature_change.type = 0;
3616 inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE;
3618 * Remove it from the list .. last thing we need a lock for.
3620 LIST_REMOVE(inp, sctp_list);
3621 SCTP_INP_WUNLOCK(inp);
3622 SCTP_ASOC_CREATE_UNLOCK(inp);
3623 SCTP_INP_INFO_WUNLOCK();
3625 * Now we release all locks. Since this INP cannot be found anymore
3626 * except possibly by the kill timer that might be running. We call
3627 * the drain function here. It should hit the case were it sees the
3628 * ACTIVE flag cleared and exit out freeing us to proceed and
3629 * destroy everything.
3631 if (from != SCTP_CALLED_FROM_INPKILL_TIMER) {
3632 (void)SCTP_OS_TIMER_STOP_DRAIN(&inp->sctp_ep.signature_change.timer);
3634 /* Probably un-needed */
3635 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3638 #ifdef SCTP_LOG_CLOSING
3639 sctp_log_closing(inp, NULL, 5);
3643 if ((inp->sctp_asocidhash) != NULL) {
3644 SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark);
3645 inp->sctp_asocidhash = NULL;
3647 /* sa_ignore FREED_MEMORY */
3648 TAILQ_FOREACH_SAFE(sq, &inp->read_queue, next, nsq) {
3649 /* Its only abandoned if it had data left */
3651 SCTP_STAT_INCR(sctps_left_abandon);
3653 TAILQ_REMOVE(&inp->read_queue, sq, next);
3654 sctp_free_remote_addr(sq->whoFrom);
3656 so->so_rcv.sb_cc -= sq->length;
3658 sctp_m_freem(sq->data);
3662 * no need to free the net count, since at this point all
3665 sctp_free_a_readq(NULL, sq);
3667 /* Now the sctp_pcb things */
3669 * free each asoc if it is not already closed/free. we can't use the
3670 * macro here since le_next will get freed as part of the
3671 * sctp_free_assoc() call.
3674 ipsec_delete_pcbpolicy(ip_pcb);
3676 if (ip_pcb->inp_options) {
3677 (void)sctp_m_free(ip_pcb->inp_options);
3678 ip_pcb->inp_options = 0;
3681 if (ip_pcb->inp_vflag & INP_IPV6) {
3682 struct in6pcb *in6p;
3684 in6p = (struct in6pcb *)inp;
3685 ip6_freepcbopts(in6p->in6p_outputopts);
3688 ip_pcb->inp_vflag = 0;
3689 /* free up authentication fields */
3690 if (inp->sctp_ep.local_auth_chunks != NULL)
3691 sctp_free_chunklist(inp->sctp_ep.local_auth_chunks);
3692 if (inp->sctp_ep.local_hmacs != NULL)
3693 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3695 LIST_FOREACH_SAFE(shared_key, &inp->sctp_ep.shared_keys, next, nshared_key) {
3696 LIST_REMOVE(shared_key, next);
3697 sctp_free_sharedkey(shared_key);
3698 /* sa_ignore FREED_MEMORY */
3702 * if we have an address list the following will free the list of
3703 * ifaddr's that are set into this ep. Again macro limitations here,
3704 * since the LIST_FOREACH could be a bad idea.
3706 LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
3707 sctp_remove_laddr(laddr);
3710 #ifdef SCTP_TRACK_FREED_ASOCS
3712 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_free_list, sctp_tcblist, nasoc) {
3713 LIST_REMOVE(asoc, sctp_tcblist);
3714 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), asoc);
3715 SCTP_DECR_ASOC_COUNT();
3717 /* *** END TEMP CODE *** */
3719 /* Now lets see about freeing the EP hash table. */
3720 if (inp->sctp_tcbhash != NULL) {
3721 SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
3722 inp->sctp_tcbhash = NULL;
3724 /* Now we must put the ep memory back into the zone pool */
3725 crfree(inp->ip_inp.inp.inp_cred);
3726 INP_LOCK_DESTROY(&inp->ip_inp.inp);
3727 SCTP_INP_LOCK_DESTROY(inp);
3728 SCTP_INP_READ_DESTROY(inp);
3729 SCTP_ASOC_CREATE_LOCK_DESTROY(inp);
3730 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
3731 SCTP_DECR_EP_COUNT();
3736 sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
3738 struct sctp_nets *net;
3740 /* locate the address */
3741 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3742 if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr))
3750 sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
3752 struct sctp_ifa *sctp_ifa;
3754 sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED);
3763 * add's a remote endpoint address, done with the INIT/INIT-ACK as well as
3764 * when a ASCONF arrives that adds it. It will also initialize all the cwnd
3768 sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
3769 struct sctp_nets **netp, uint16_t port, int set_scope, int from)
3772 * The following is redundant to the same lines in the
3773 * sctp_aloc_assoc() but is needed since others call the add address
3776 struct sctp_nets *net, *netfirst;
3779 SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ",
3781 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr);
3783 netfirst = sctp_findnet(stcb, newaddr);
3786 * Lie and return ok, we don't want to make the association
3787 * go away for this behavior. It will happen in the TCP
3788 * model in a connected socket. It does not reach the hash
3789 * table until after the association is built so it can't be
3790 * found. Mark as reachable, since the initial creation will
3791 * have been cleared and the NOT_IN_ASSOC flag will have
3792 * been added... and we don't want to end up removing it
3795 if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) {
3796 netfirst->dest_state = (SCTP_ADDR_REACHABLE |
3797 SCTP_ADDR_UNCONFIRMED);
3799 netfirst->dest_state = SCTP_ADDR_REACHABLE;
3805 switch (newaddr->sa_family) {
3809 struct sockaddr_in *sin;
3811 sin = (struct sockaddr_in *)newaddr;
3812 if (sin->sin_addr.s_addr == 0) {
3813 /* Invalid address */
3816 /* zero out the bzero area */
3817 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
3819 /* assure len is set */
3820 sin->sin_len = sizeof(struct sockaddr_in);
3822 if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
3823 stcb->asoc.scope.ipv4_local_scope = 1;
3826 /* Validate the address is in scope */
3827 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) &&
3828 (stcb->asoc.scope.ipv4_local_scope == 0)) {
3838 struct sockaddr_in6 *sin6;
3840 sin6 = (struct sockaddr_in6 *)newaddr;
3841 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3842 /* Invalid address */
3845 /* assure len is set */
3846 sin6->sin6_len = sizeof(struct sockaddr_in6);
3848 if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) {
3849 stcb->asoc.scope.loopback_scope = 1;
3850 stcb->asoc.scope.local_scope = 0;
3851 stcb->asoc.scope.ipv4_local_scope = 1;
3852 stcb->asoc.scope.site_scope = 1;
3853 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
3855 * If the new destination is a
3856 * LINK_LOCAL we must have common
3857 * site scope. Don't set the local
3858 * scope since we may not share all
3859 * links, only loopback can do this.
3860 * Links on the local network would
3861 * also be on our private network
3864 stcb->asoc.scope.ipv4_local_scope = 1;
3865 stcb->asoc.scope.site_scope = 1;
3866 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
3868 * If the new destination is
3869 * SITE_LOCAL then we must have site
3872 stcb->asoc.scope.site_scope = 1;
3875 /* Validate the address is in scope */
3876 if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) &&
3877 (stcb->asoc.scope.loopback_scope == 0)) {
3879 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
3880 (stcb->asoc.scope.local_scope == 0)) {
3882 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
3883 (stcb->asoc.scope.site_scope == 0)) {
3891 /* not supported family type */
3894 net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets);
3898 SCTP_INCR_RADDR_COUNT();
3899 bzero(net, sizeof(struct sctp_nets));
3900 (void)SCTP_GETTIME_TIMEVAL(&net->start_time);
3901 memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len);
3902 switch (newaddr->sa_family) {
3905 ((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport;
3910 ((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport;
3916 net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id);
3917 if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) {
3918 stcb->asoc.scope.loopback_scope = 1;
3919 stcb->asoc.scope.ipv4_local_scope = 1;
3920 stcb->asoc.scope.local_scope = 0;
3921 stcb->asoc.scope.site_scope = 1;
3924 net->failure_threshold = stcb->asoc.def_net_failure;
3925 net->pf_threshold = stcb->asoc.def_net_pf_threshold;
3926 if (addr_inscope == 0) {
3927 net->dest_state = (SCTP_ADDR_REACHABLE |
3928 SCTP_ADDR_OUT_OF_SCOPE);
3930 if (from == SCTP_ADDR_IS_CONFIRMED)
3931 /* SCTP_ADDR_IS_CONFIRMED is passed by connect_x */
3932 net->dest_state = SCTP_ADDR_REACHABLE;
3934 net->dest_state = SCTP_ADDR_REACHABLE |
3935 SCTP_ADDR_UNCONFIRMED;
3938 * We set this to 0, the timer code knows that this means its an
3941 net->rto_needed = 1;
3943 net->RTO_measured = 0;
3944 stcb->asoc.numnets++;
3946 net->cwr_window_tsn = net->last_cwr_tsn = stcb->asoc.sending_seq - 1;
3948 net->dscp = stcb->asoc.default_dscp;
3950 net->flowlabel = stcb->asoc.default_flowlabel;
3952 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
3953 net->dest_state |= SCTP_ADDR_NOHB;
3955 net->dest_state &= ~SCTP_ADDR_NOHB;
3957 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DO_NOT_PMTUD)) {
3958 net->dest_state |= SCTP_ADDR_NO_PMTUD;
3960 net->dest_state &= ~SCTP_ADDR_NO_PMTUD;
3962 net->heart_beat_delay = stcb->asoc.heart_beat_delay;
3963 /* Init the timer structure */
3964 SCTP_OS_TIMER_INIT(&net->rxt_timer.timer);
3965 SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer);
3966 SCTP_OS_TIMER_INIT(&net->hb_timer.timer);
3968 /* Now generate a route for this guy */
3970 /* KAME hack: embed scopeid */
3971 if (newaddr->sa_family == AF_INET6) {
3972 struct sockaddr_in6 *sin6;
3974 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3975 (void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone));
3976 sin6->sin6_scope_id = 0;
3979 SCTP_RTALLOC((sctp_route_t *) & net->ro,
3981 stcb->sctp_ep->fibnum);
3983 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) {
3984 /* Get source address */
3985 net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep,
3987 (sctp_route_t *) & net->ro,
3991 if (net->ro._s_addr != NULL) {
3992 net->src_addr_selected = 1;
3993 /* Now get the interface MTU */
3994 if (net->ro._s_addr->ifn_p != NULL) {
3995 net->mtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p);
3998 net->src_addr_selected = 0;
4003 rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_rt);
4006 * Start things off to match mtu of
4009 SCTP_SET_MTU_OF_ROUTE(&net->ro._l_addr.sa,
4010 net->ro.ro_rt, net->mtu);
4013 * we take the route mtu over the interface,
4014 * since the route may be leading out the
4015 * loopback, or a different interface.
4021 net->src_addr_selected = 0;
4023 if (net->mtu == 0) {
4024 switch (newaddr->sa_family) {
4027 net->mtu = SCTP_DEFAULT_MTU;
4039 #if defined(INET) || defined(INET6)
4041 net->mtu -= (uint32_t) sizeof(struct udphdr);
4044 if (from == SCTP_ALLOC_ASOC) {
4045 stcb->asoc.smallest_mtu = net->mtu;
4047 if (stcb->asoc.smallest_mtu > net->mtu) {
4048 sctp_pathmtu_adjustment(stcb, net->mtu);
4051 if (newaddr->sa_family == AF_INET6) {
4052 struct sockaddr_in6 *sin6;
4054 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
4055 (void)sa6_recoverscope(sin6);
4059 /* JRS - Use the congestion control given in the CC module */
4060 if (stcb->asoc.cc_functions.sctp_set_initial_cc_param != NULL)
4061 (*stcb->asoc.cc_functions.sctp_set_initial_cc_param) (stcb, net);
4064 * CMT: CUC algo - set find_pseudo_cumack to TRUE (1) at beginning
4065 * of assoc (2005/06/27, iyengar@cis.udel.edu)
4067 net->find_pseudo_cumack = 1;
4068 net->find_rtx_pseudo_cumack = 1;
4069 /* Choose an initial flowid. */
4070 net->flowid = stcb->asoc.my_vtag ^
4071 ntohs(stcb->rport) ^
4072 ntohs(stcb->sctp_ep->sctp_lport);
4073 net->flowtype = M_HASHTYPE_OPAQUE;
4077 netfirst = TAILQ_FIRST(&stcb->asoc.nets);
4078 if (net->ro.ro_rt == NULL) {
4079 /* Since we have no route put it at the back */
4080 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4081 } else if (netfirst == NULL) {
4082 /* We are the first one in the pool. */
4083 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4084 } else if (netfirst->ro.ro_rt == NULL) {
4086 * First one has NO route. Place this one ahead of the first
4089 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4090 } else if (net->ro.ro_rt->rt_ifp != netfirst->ro.ro_rt->rt_ifp) {
4092 * This one has a different interface than the one at the
4093 * top of the list. Place it ahead.
4095 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4098 * Ok we have the same interface as the first one. Move
4099 * forward until we find either a) one with a NULL route...
4100 * insert ahead of that b) one with a different ifp.. insert
4101 * after that. c) end of the list.. insert at the tail.
4103 struct sctp_nets *netlook;
4106 netlook = TAILQ_NEXT(netfirst, sctp_next);
4107 if (netlook == NULL) {
4108 /* End of the list */
4109 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4111 } else if (netlook->ro.ro_rt == NULL) {
4112 /* next one has NO route */
4113 TAILQ_INSERT_BEFORE(netfirst, net, sctp_next);
4115 } else if (netlook->ro.ro_rt->rt_ifp != net->ro.ro_rt->rt_ifp) {
4116 TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook,
4122 } while (netlook != NULL);
4125 /* got to have a primary set */
4126 if (stcb->asoc.primary_destination == 0) {
4127 stcb->asoc.primary_destination = net;
4128 } else if ((stcb->asoc.primary_destination->ro.ro_rt == NULL) &&
4130 ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
4131 /* No route to current primary adopt new primary */
4132 stcb->asoc.primary_destination = net;
4134 /* Validate primary is first */
4135 net = TAILQ_FIRST(&stcb->asoc.nets);
4136 if ((net != stcb->asoc.primary_destination) &&
4137 (stcb->asoc.primary_destination)) {
4139 * first one on the list is NOT the primary sctp_cmpaddr()
4140 * is much more efficient if the primary is the first on the
4143 TAILQ_REMOVE(&stcb->asoc.nets,
4144 stcb->asoc.primary_destination, sctp_next);
4145 TAILQ_INSERT_HEAD(&stcb->asoc.nets,
4146 stcb->asoc.primary_destination, sctp_next);
4153 sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
4156 struct sctpasochead *head;
4157 struct sctp_tcb *lstcb;
4159 SCTP_INP_WLOCK(inp);
4161 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
4163 SCTP_INP_WUNLOCK(inp);
4167 * We don't allow assoc id to be one of SCTP_FUTURE_ASSOC,
4168 * SCTP_CURRENT_ASSOC and SCTP_ALL_ASSOC.
4170 if (inp->sctp_associd_counter <= SCTP_ALL_ASSOC) {
4171 inp->sctp_associd_counter = SCTP_ALL_ASSOC + 1;
4173 id = inp->sctp_associd_counter;
4174 inp->sctp_associd_counter++;
4175 lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t) id, 0);
4179 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
4180 LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash);
4181 stcb->asoc.in_asocid_hash = 1;
4182 SCTP_INP_WUNLOCK(inp);
4187 * allocate an association and add it to the endpoint. The caller must be
4188 * careful to add all additional addresses once they are know right away or
4189 * else the assoc will be may experience a blackout scenario.
4192 sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
4193 int *error, uint32_t override_tag, uint32_t vrf_id,
4194 uint16_t o_streams, uint16_t port,
4198 /* note the p argument is only valid in unbound sockets */
4200 struct sctp_tcb *stcb;
4201 struct sctp_association *asoc;
4202 struct sctpasochead *head;
4207 * Assumption made here: Caller has done a
4208 * sctp_findassociation_ep_addr(ep, addr's); to make sure the
4209 * address does not exist already.
4211 if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) {
4212 /* Hit max assoc, sorry no more */
4213 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4217 if (firstaddr == NULL) {
4218 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4222 SCTP_INP_RLOCK(inp);
4223 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
4224 ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) ||
4225 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4227 * If its in the TCP pool, its NOT allowed to create an
4228 * association. The parent listener needs to call
4229 * sctp_aloc_assoc.. or the one-2-many socket. If a peeled
4230 * off, or connected one does this.. its an error.
4232 SCTP_INP_RUNLOCK(inp);
4233 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4237 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
4238 (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)) {
4239 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) ||
4240 (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED)) {
4241 SCTP_INP_RUNLOCK(inp);
4242 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4247 SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:");
4250 SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr);
4251 switch (firstaddr->sa_family) {
4254 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4255 ntohs(((struct sockaddr_in *)firstaddr)->sin_port));
4260 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4261 ntohs(((struct sockaddr_in6 *)firstaddr)->sin6_port));
4268 SCTPDBG(SCTP_DEBUG_PCB3, "None\n");
4270 #endif /* SCTP_DEBUG */
4271 switch (firstaddr->sa_family) {
4275 struct sockaddr_in *sin;
4277 sin = (struct sockaddr_in *)firstaddr;
4278 if ((ntohs(sin->sin_port) == 0) ||
4279 (sin->sin_addr.s_addr == INADDR_ANY) ||
4280 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
4281 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
4282 /* Invalid address */
4283 SCTP_INP_RUNLOCK(inp);
4284 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4288 rport = sin->sin_port;
4295 struct sockaddr_in6 *sin6;
4297 sin6 = (struct sockaddr_in6 *)firstaddr;
4298 if ((ntohs(sin6->sin6_port) == 0) ||
4299 IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
4300 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
4301 /* Invalid address */
4302 SCTP_INP_RUNLOCK(inp);
4303 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4307 rport = sin6->sin6_port;
4312 /* not supported family type */
4313 SCTP_INP_RUNLOCK(inp);
4314 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4318 SCTP_INP_RUNLOCK(inp);
4319 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4321 * If you have not performed a bind, then we need to do the
4322 * ephemeral bind for you.
4324 if ((err = sctp_inpcb_bind(inp->sctp_socket,
4325 (struct sockaddr *)NULL,
4326 (struct sctp_ifa *)NULL,
4329 /* bind error, probably perm */
4334 stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb);
4336 /* out of memory? */
4337 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
4341 SCTP_INCR_ASOC_COUNT();
4343 bzero(stcb, sizeof(*stcb));
4346 asoc->assoc_id = sctp_aloc_a_assoc_id(inp, stcb);
4347 SCTP_TCB_LOCK_INIT(stcb);
4348 SCTP_TCB_SEND_LOCK_INIT(stcb);
4349 stcb->rport = rport;
4350 /* setup back pointer's */
4351 stcb->sctp_ep = inp;
4352 stcb->sctp_socket = inp->sctp_socket;
4353 if ((err = sctp_init_asoc(inp, stcb, override_tag, vrf_id, o_streams))) {
4355 SCTP_TCB_LOCK_DESTROY(stcb);
4356 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4357 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4358 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4359 SCTP_DECR_ASOC_COUNT();
4364 SCTP_INP_INFO_WLOCK();
4365 SCTP_INP_WLOCK(inp);
4366 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
4367 /* inpcb freed while alloc going on */
4368 SCTP_TCB_LOCK_DESTROY(stcb);
4369 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4370 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4371 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4372 SCTP_INP_WUNLOCK(inp);
4373 SCTP_INP_INFO_WUNLOCK();
4374 SCTP_DECR_ASOC_COUNT();
4375 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4379 SCTP_TCB_LOCK(stcb);
4381 /* now that my_vtag is set, add it to the hash */
4382 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))];
4383 /* put it in the bucket in the vtag hash of assoc's for the system */
4384 LIST_INSERT_HEAD(head, stcb, sctp_asocs);
4385 SCTP_INP_INFO_WUNLOCK();
4387 if ((err = sctp_add_remote_addr(stcb, firstaddr, NULL, port, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC))) {
4388 /* failure.. memory error? */
4389 if (asoc->strmout) {
4390 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4391 asoc->strmout = NULL;
4393 if (asoc->mapping_array) {
4394 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4395 asoc->mapping_array = NULL;
4397 if (asoc->nr_mapping_array) {
4398 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4399 asoc->nr_mapping_array = NULL;
4401 SCTP_DECR_ASOC_COUNT();
4402 SCTP_TCB_UNLOCK(stcb);
4403 SCTP_TCB_LOCK_DESTROY(stcb);
4404 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4405 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4406 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4407 SCTP_INP_WUNLOCK(inp);
4408 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4412 /* Init all the timers */
4413 SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer);
4414 SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer);
4415 SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer);
4416 SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer);
4417 SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer);
4418 SCTP_OS_TIMER_INIT(&asoc->delayed_event_timer.timer);
4419 SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer);
4421 LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist);
4422 /* now file the port under the hash as well */
4423 if (inp->sctp_tcbhash != NULL) {
4424 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport,
4425 inp->sctp_hashmark)];
4426 LIST_INSERT_HEAD(head, stcb, sctp_tcbhash);
4428 SCTP_INP_WUNLOCK(inp);
4429 SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", (void *)stcb);
4435 sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
4437 struct sctp_association *asoc;
4441 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4442 if (net == asoc->primary_destination) {
4444 struct sctp_nets *lnet;
4446 lnet = TAILQ_FIRST(&asoc->nets);
4448 * Mobility adaptation Ideally, if deleted destination is
4449 * the primary, it becomes a fast retransmission trigger by
4450 * the subsequent SET PRIMARY. (by micchie)
4452 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
4453 SCTP_MOBILITY_BASE) ||
4454 sctp_is_mobility_feature_on(stcb->sctp_ep,
4455 SCTP_MOBILITY_FASTHANDOFF)) {
4456 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n");
4457 if (asoc->deleted_primary != NULL) {
4458 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n");
4461 asoc->deleted_primary = net;
4462 atomic_add_int(&net->ref_count, 1);
4463 memset(&net->lastsa, 0, sizeof(net->lastsa));
4464 memset(&net->lastsv, 0, sizeof(net->lastsv));
4465 sctp_mobility_feature_on(stcb->sctp_ep,
4466 SCTP_MOBILITY_PRIM_DELETED);
4467 sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED,
4468 stcb->sctp_ep, stcb, NULL);
4471 /* Try to find a confirmed primary */
4472 asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0);
4474 if (net == asoc->last_data_chunk_from) {
4476 asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets);
4478 if (net == asoc->last_control_chunk_from) {
4480 asoc->last_control_chunk_from = NULL;
4482 if (net == stcb->asoc.alternate) {
4483 sctp_free_remote_addr(stcb->asoc.alternate);
4484 stcb->asoc.alternate = NULL;
4486 sctp_free_remote_addr(net);
4490 * remove a remote endpoint address from an association, it will fail if the
4491 * address does not exist.
4494 sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
4497 * Here we need to remove a remote address. This is quite simple, we
4498 * first find it in the list of address for the association
4499 * (tasoc->asoc.nets) and then if it is there, we do a LIST_REMOVE
4500 * on that item. Note we do not allow it to be removed if there are
4501 * no other addresses.
4503 struct sctp_association *asoc;
4504 struct sctp_nets *net, *nnet;
4508 /* locate the address */
4509 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
4510 if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) {
4513 if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr,
4515 /* we found the guy */
4516 if (asoc->numnets < 2) {
4517 /* Must have at LEAST two remote addresses */
4520 sctp_remove_net(stcb, net);
4530 sctp_delete_from_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4532 struct sctpvtaghead *chain;
4533 struct sctp_tagblock *twait_block;
4537 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4538 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4539 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4540 if ((twait_block->vtag_block[i].v_tag == tag) &&
4541 (twait_block->vtag_block[i].lport == lport) &&
4542 (twait_block->vtag_block[i].rport == rport)) {
4543 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4544 twait_block->vtag_block[i].v_tag = 0;
4545 twait_block->vtag_block[i].lport = 0;
4546 twait_block->vtag_block[i].rport = 0;
4557 sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4559 struct sctpvtaghead *chain;
4560 struct sctp_tagblock *twait_block;
4564 SCTP_INP_INFO_WLOCK();
4565 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4566 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4567 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4568 if ((twait_block->vtag_block[i].v_tag == tag) &&
4569 (twait_block->vtag_block[i].lport == lport) &&
4570 (twait_block->vtag_block[i].rport == rport)) {
4578 SCTP_INP_INFO_WUNLOCK();
4584 sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport)
4586 struct sctpvtaghead *chain;
4587 struct sctp_tagblock *twait_block;
4595 (void)SCTP_GETTIME_TIMEVAL(&now);
4596 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4598 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4599 /* Block(s) present, lets find space, and expire on the fly */
4600 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4601 if ((twait_block->vtag_block[i].v_tag == 0) &&
4603 twait_block->vtag_block[i].tv_sec_at_expire =
4605 twait_block->vtag_block[i].v_tag = tag;
4606 twait_block->vtag_block[i].lport = lport;
4607 twait_block->vtag_block[i].rport = rport;
4609 } else if ((twait_block->vtag_block[i].v_tag) &&
4610 ((long)twait_block->vtag_block[i].tv_sec_at_expire < now.tv_sec)) {
4611 /* Audit expires this guy */
4612 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4613 twait_block->vtag_block[i].v_tag = 0;
4614 twait_block->vtag_block[i].lport = 0;
4615 twait_block->vtag_block[i].rport = 0;
4617 /* Reuse it for my new tag */
4618 twait_block->vtag_block[i].tv_sec_at_expire = now.tv_sec + time;
4619 twait_block->vtag_block[i].v_tag = tag;
4620 twait_block->vtag_block[i].lport = lport;
4621 twait_block->vtag_block[i].rport = rport;
4628 * We only do up to the block where we can place our
4634 /* Need to add a new block to chain */
4636 SCTP_MALLOC(twait_block, struct sctp_tagblock *,
4637 sizeof(struct sctp_tagblock), SCTP_M_TIMW);
4638 if (twait_block == NULL) {
4640 panic("Can not alloc tagblock");
4644 memset(twait_block, 0, sizeof(struct sctp_tagblock));
4645 LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock);
4646 twait_block->vtag_block[0].tv_sec_at_expire = now.tv_sec + time;
4647 twait_block->vtag_block[0].v_tag = tag;
4648 twait_block->vtag_block[0].lport = lport;
4649 twait_block->vtag_block[0].rport = rport;
4654 sctp_clean_up_stream(struct sctp_tcb *stcb, struct sctp_readhead *rh)
4656 struct sctp_tmit_chunk *chk, *nchk;
4657 struct sctp_queued_to_read *ctl, *nctl;
4659 TAILQ_FOREACH_SAFE(ctl, rh, next_instrm, nctl) {
4660 TAILQ_REMOVE(rh, ctl, next_instrm);
4662 if (ctl->on_read_q == 0) {
4663 sctp_free_remote_addr(ctl->whoFrom);
4665 sctp_m_freem(ctl->data);
4669 /* Reassembly free? */
4670 TAILQ_FOREACH_SAFE(chk, &ctl->reasm, sctp_next, nchk) {
4671 TAILQ_REMOVE(&ctl->reasm, chk, sctp_next);
4673 sctp_m_freem(chk->data);
4676 if (chk->holds_key_ref)
4677 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4678 sctp_free_remote_addr(chk->whoTo);
4679 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4680 SCTP_DECR_CHK_COUNT();
4681 /* sa_ignore FREED_MEMORY */
4684 * We don't free the address here since all the net's were
4687 if (ctl->on_read_q == 0) {
4688 sctp_free_a_readq(stcb, ctl);
4695 * Free the association after un-hashing the remote port. This
4696 * function ALWAYS returns holding NO LOCK on the stcb. It DOES
4697 * expect that the input to this function IS a locked TCB.
4698 * It will return 0, if it did NOT destroy the association (instead
4699 * it unlocks it. It will return NON-zero if it either destroyed the
4700 * association OR the association is already destroyed.
4703 sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
4706 struct sctp_association *asoc;
4707 struct sctp_nets *net, *nnet;
4708 struct sctp_laddr *laddr, *naddr;
4709 struct sctp_tmit_chunk *chk, *nchk;
4710 struct sctp_asconf_addr *aparam, *naparam;
4711 struct sctp_asconf_ack *aack, *naack;
4712 struct sctp_stream_reset_list *strrst, *nstrrst;
4713 struct sctp_queued_to_read *sq, *nsq;
4714 struct sctp_stream_queue_pending *sp, *nsp;
4715 sctp_sharedkey_t *shared_key, *nshared_key;
4718 /* first, lets purge the entry from the hash table. */
4720 #ifdef SCTP_LOG_CLOSING
4721 sctp_log_closing(inp, stcb, 6);
4723 if (stcb->asoc.state == 0) {
4724 #ifdef SCTP_LOG_CLOSING
4725 sctp_log_closing(inp, NULL, 7);
4727 /* there is no asoc, really TSNH :-0 */
4730 if (stcb->asoc.alternate) {
4731 sctp_free_remote_addr(stcb->asoc.alternate);
4732 stcb->asoc.alternate = NULL;
4735 if (stcb->freed_from_where == 0) {
4736 /* Only record the first place free happened from */
4737 stcb->freed_from_where = from_location;
4742 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4743 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4744 /* nothing around */
4747 so = inp->sctp_socket;
4750 * We used timer based freeing if a reader or writer is in the way.
4751 * So we first check if we are actually being called from a timer,
4752 * if so we abort early if a reader or writer is still in the way.
4754 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
4755 (from_inpcbfree == SCTP_NORMAL_PROC)) {
4757 * is it the timer driving us? if so are the reader/writers
4760 if (stcb->asoc.refcnt) {
4761 /* nope, reader or writer in the way */
4762 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4763 /* no asoc destroyed */
4764 SCTP_TCB_UNLOCK(stcb);
4765 #ifdef SCTP_LOG_CLOSING
4766 sctp_log_closing(inp, stcb, 8);
4771 /* now clean up any other timers */
4772 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4773 asoc->dack_timer.self = NULL;
4774 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4776 * For stream reset we don't blast this unless
4777 * it is a str-reset timer, it might be the
4778 * free-asoc timer which we DON'T want to
4781 if (asoc->strreset_timer.type == SCTP_TIMER_TYPE_STRRESET)
4782 asoc->strreset_timer.self = NULL;
4783 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4784 asoc->asconf_timer.self = NULL;
4785 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4786 asoc->autoclose_timer.self = NULL;
4787 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4788 asoc->shut_guard_timer.self = NULL;
4789 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4790 asoc->delayed_event_timer.self = NULL;
4791 /* Mobility adaptation */
4792 (void)SCTP_OS_TIMER_STOP(&asoc->delete_prim_timer.timer);
4793 asoc->delete_prim_timer.self = NULL;
4794 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4795 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4796 net->rxt_timer.self = NULL;
4797 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4798 net->pmtu_timer.self = NULL;
4799 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4800 net->hb_timer.self = NULL;
4802 /* Now the read queue needs to be cleaned up (only once) */
4803 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) {
4804 stcb->asoc.state |= SCTP_STATE_ABOUT_TO_BE_FREED;
4805 SCTP_INP_READ_LOCK(inp);
4806 TAILQ_FOREACH(sq, &inp->read_queue, next) {
4807 if (sq->stcb == stcb) {
4808 sq->do_not_ref_stcb = 1;
4809 sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
4811 * If there is no end, there never will be
4814 if (sq->end_added == 0) {
4815 /* Held for PD-API clear that. */
4816 sq->pdapi_aborted = 1;
4817 sq->held_length = 0;
4818 if (sctp_stcb_is_feature_on(inp, stcb, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) {
4820 * Need to add a PD-API
4821 * aborted indication.
4822 * Setting the control_pdapi
4823 * assures that it will be
4824 * added right after this
4829 stcb->asoc.control_pdapi = sq;
4830 strseq = (sq->sinfo_stream << 16) | sq->sinfo_ssn;
4831 sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION,
4833 SCTP_PARTIAL_DELIVERY_ABORTED,
4836 stcb->asoc.control_pdapi = NULL;
4839 /* Add an end to wake them */
4843 SCTP_INP_READ_UNLOCK(inp);
4844 if (stcb->block_entry) {
4845 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET);
4846 stcb->block_entry->error = ECONNRESET;
4847 stcb->block_entry = NULL;
4850 if ((stcb->asoc.refcnt) || (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE)) {
4852 * Someone holds a reference OR the socket is unaccepted
4855 if ((stcb->asoc.refcnt) ||
4856 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4857 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4858 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4859 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4861 SCTP_TCB_UNLOCK(stcb);
4862 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4863 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4864 /* nothing around */
4867 /* Wake any reader/writers */
4868 sctp_sorwakeup(inp, so);
4869 sctp_sowwakeup(inp, so);
4871 #ifdef SCTP_LOG_CLOSING
4872 sctp_log_closing(inp, stcb, 9);
4874 /* no asoc destroyed */
4877 #ifdef SCTP_LOG_CLOSING
4878 sctp_log_closing(inp, stcb, 10);
4881 * When I reach here, no others want to kill the assoc yet.. and I
4882 * own the lock. Now its possible an abort comes in when I do the
4883 * lock exchange below to grab all the locks to do the final take
4884 * out. to prevent this we increment the count, which will start a
4885 * timer and blow out above thus assuring us that we hold exclusive
4886 * killing of the asoc. Note that after getting back the TCB lock we
4887 * will go ahead and increment the counter back up and stop any
4888 * timer a passing stranger may have started :-S
4890 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4891 atomic_add_int(&stcb->asoc.refcnt, 1);
4893 SCTP_TCB_UNLOCK(stcb);
4894 SCTP_INP_INFO_WLOCK();
4895 SCTP_INP_WLOCK(inp);
4896 SCTP_TCB_LOCK(stcb);
4898 /* Double check the GONE flag */
4899 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4900 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4901 /* nothing around */
4904 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
4905 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4907 * For TCP type we need special handling when we are
4908 * connected. We also include the peel'ed off ones to.
4910 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4911 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED;
4912 inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED;
4915 if (so->so_rcv.sb_cc == 0) {
4916 so->so_state &= ~(SS_ISCONNECTING |
4917 SS_ISDISCONNECTING |
4921 socantrcvmore_locked(so);
4922 sctp_sowwakeup(inp, so);
4923 sctp_sorwakeup(inp, so);
4929 * Make it invalid too, that way if its about to run it will abort
4932 /* re-increment the lock */
4933 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4934 atomic_add_int(&stcb->asoc.refcnt, -1);
4936 if (stcb->asoc.refcnt) {
4937 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4938 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4939 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4940 SCTP_INP_INFO_WUNLOCK();
4941 SCTP_INP_WUNLOCK(inp);
4943 SCTP_TCB_UNLOCK(stcb);
4947 if (inp->sctp_tcbhash) {
4948 LIST_REMOVE(stcb, sctp_tcbhash);
4950 if (stcb->asoc.in_asocid_hash) {
4951 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4953 /* Now lets remove it from the list of ALL associations in the EP */
4954 LIST_REMOVE(stcb, sctp_tcblist);
4955 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4956 SCTP_INP_INCR_REF(inp);
4957 SCTP_INP_WUNLOCK(inp);
4959 /* pull from vtag hash */
4960 LIST_REMOVE(stcb, sctp_asocs);
4961 sctp_add_vtag_to_timewait(asoc->my_vtag, SCTP_BASE_SYSCTL(sctp_vtag_time_wait),
4962 inp->sctp_lport, stcb->rport);
4965 * Now restop the timers to be sure this is paranoia at is finest!
4967 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4968 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4969 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4970 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4971 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4972 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4973 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4974 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4975 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4976 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4977 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
4980 asoc->strreset_timer.type = SCTP_TIMER_TYPE_NONE;
4982 * The chunk lists and such SHOULD be empty but we check them just
4985 /* anything on the wheel needs to be removed */
4986 for (i = 0; i < asoc->streamoutcnt; i++) {
4987 struct sctp_stream_out *outs;
4989 outs = &asoc->strmout[i];
4990 /* now clean up any chunks here */
4991 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
4992 TAILQ_REMOVE(&outs->outqueue, sp, next);
4993 sctp_free_spbufspace(stcb, asoc, sp);
4996 /* Still an open socket - report */
4997 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
4998 0, (void *)sp, SCTP_SO_LOCKED);
5001 sctp_m_freem(sp->data);
5003 sp->tail_mbuf = NULL;
5008 sctp_free_remote_addr(sp->net);
5011 sctp_free_a_strmoq(stcb, sp, SCTP_SO_LOCKED);
5014 /* sa_ignore FREED_MEMORY */
5015 TAILQ_FOREACH_SAFE(strrst, &asoc->resetHead, next_resp, nstrrst) {
5016 TAILQ_REMOVE(&asoc->resetHead, strrst, next_resp);
5017 SCTP_FREE(strrst, SCTP_M_STRESET);
5019 TAILQ_FOREACH_SAFE(sq, &asoc->pending_reply_queue, next, nsq) {
5020 TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
5022 sctp_m_freem(sq->data);
5025 sctp_free_remote_addr(sq->whoFrom);
5028 /* Free the ctl entry */
5029 sctp_free_a_readq(stcb, sq);
5030 /* sa_ignore FREED_MEMORY */
5032 TAILQ_FOREACH_SAFE(chk, &asoc->free_chunks, sctp_next, nchk) {
5033 TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next);
5035 sctp_m_freem(chk->data);
5038 if (chk->holds_key_ref)
5039 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5040 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5041 SCTP_DECR_CHK_COUNT();
5042 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1);
5043 asoc->free_chunk_cnt--;
5044 /* sa_ignore FREED_MEMORY */
5046 /* pending send queue SHOULD be empty */
5047 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
5048 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
5049 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
5052 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
5055 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
5058 /* Still a socket? */
5059 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
5060 0, chk, SCTP_SO_LOCKED);
5063 sctp_m_freem(chk->data);
5067 if (chk->holds_key_ref)
5068 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5070 sctp_free_remote_addr(chk->whoTo);
5073 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5074 SCTP_DECR_CHK_COUNT();
5075 /* sa_ignore FREED_MEMORY */
5077 /* sent queue SHOULD be empty */
5078 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
5079 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
5080 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
5081 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
5084 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
5088 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
5091 /* Still a socket? */
5092 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
5093 0, chk, SCTP_SO_LOCKED);
5096 sctp_m_freem(chk->data);
5100 if (chk->holds_key_ref)
5101 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5102 sctp_free_remote_addr(chk->whoTo);
5103 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5104 SCTP_DECR_CHK_COUNT();
5105 /* sa_ignore FREED_MEMORY */
5108 for (i = 0; i < stcb->asoc.streamoutcnt; i++) {
5109 if (stcb->asoc.strmout[i].chunks_on_queues > 0) {
5110 panic("%u chunks left for stream %u.", stcb->asoc.strmout[i].chunks_on_queues, i);
5114 /* control queue MAY not be empty */
5115 TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) {
5116 TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next);
5118 sctp_m_freem(chk->data);
5121 if (chk->holds_key_ref)
5122 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5123 sctp_free_remote_addr(chk->whoTo);
5124 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5125 SCTP_DECR_CHK_COUNT();
5126 /* sa_ignore FREED_MEMORY */
5128 /* ASCONF queue MAY not be empty */
5129 TAILQ_FOREACH_SAFE(chk, &asoc->asconf_send_queue, sctp_next, nchk) {
5130 TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next);
5132 sctp_m_freem(chk->data);
5135 if (chk->holds_key_ref)
5136 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5137 sctp_free_remote_addr(chk->whoTo);
5138 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5139 SCTP_DECR_CHK_COUNT();
5140 /* sa_ignore FREED_MEMORY */
5142 if (asoc->mapping_array) {
5143 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
5144 asoc->mapping_array = NULL;
5146 if (asoc->nr_mapping_array) {
5147 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
5148 asoc->nr_mapping_array = NULL;
5150 /* the stream outs */
5151 if (asoc->strmout) {
5152 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
5153 asoc->strmout = NULL;
5155 asoc->strm_realoutsize = asoc->streamoutcnt = 0;
5157 for (i = 0; i < asoc->streamincnt; i++) {
5158 sctp_clean_up_stream(stcb, &asoc->strmin[i].inqueue);
5159 sctp_clean_up_stream(stcb, &asoc->strmin[i].uno_inqueue);
5161 SCTP_FREE(asoc->strmin, SCTP_M_STRMI);
5162 asoc->strmin = NULL;
5164 asoc->streamincnt = 0;
5165 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
5167 if (SCTP_BASE_INFO(ipi_count_raddr) == 0) {
5168 panic("no net's left alloc'ed, or list points to itself");
5171 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
5172 sctp_free_remote_addr(net);
5174 LIST_FOREACH_SAFE(laddr, &asoc->sctp_restricted_addrs, sctp_nxt_addr, naddr) {
5175 /* sa_ignore FREED_MEMORY */
5176 sctp_remove_laddr(laddr);
5179 /* pending asconf (address) parameters */
5180 TAILQ_FOREACH_SAFE(aparam, &asoc->asconf_queue, next, naparam) {
5181 /* sa_ignore FREED_MEMORY */
5182 TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
5183 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
5185 TAILQ_FOREACH_SAFE(aack, &asoc->asconf_ack_sent, next, naack) {
5186 /* sa_ignore FREED_MEMORY */
5187 TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
5188 if (aack->data != NULL) {
5189 sctp_m_freem(aack->data);
5191 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
5193 /* clean up auth stuff */
5194 if (asoc->local_hmacs)
5195 sctp_free_hmaclist(asoc->local_hmacs);
5196 if (asoc->peer_hmacs)
5197 sctp_free_hmaclist(asoc->peer_hmacs);
5199 if (asoc->local_auth_chunks)
5200 sctp_free_chunklist(asoc->local_auth_chunks);
5201 if (asoc->peer_auth_chunks)
5202 sctp_free_chunklist(asoc->peer_auth_chunks);
5204 sctp_free_authinfo(&asoc->authinfo);
5206 LIST_FOREACH_SAFE(shared_key, &asoc->shared_keys, next, nshared_key) {
5207 LIST_REMOVE(shared_key, next);
5208 sctp_free_sharedkey(shared_key);
5209 /* sa_ignore FREED_MEMORY */
5212 /* Insert new items here :> */
5214 /* Get rid of LOCK */
5215 SCTP_TCB_UNLOCK(stcb);
5216 SCTP_TCB_LOCK_DESTROY(stcb);
5217 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
5218 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5219 SCTP_INP_INFO_WUNLOCK();
5220 SCTP_INP_RLOCK(inp);
5222 #ifdef SCTP_TRACK_FREED_ASOCS
5223 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5224 /* now clean up the tasoc itself */
5225 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5226 SCTP_DECR_ASOC_COUNT();
5228 LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist);
5231 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5232 SCTP_DECR_ASOC_COUNT();
5234 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5235 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5237 * If its NOT the inp_free calling us AND sctp_close
5238 * as been called, we call back...
5240 SCTP_INP_RUNLOCK(inp);
5242 * This will start the kill timer (if we are the
5243 * last one) since we hold an increment yet. But
5244 * this is the only safe way to do this since
5245 * otherwise if the socket closes at the same time
5246 * we are here we might collide in the cleanup.
5248 sctp_inpcb_free(inp,
5249 SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
5250 SCTP_CALLED_DIRECTLY_NOCMPSET);
5251 SCTP_INP_DECR_REF(inp);
5254 /* The socket is still open. */
5255 SCTP_INP_DECR_REF(inp);
5258 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5259 SCTP_INP_RUNLOCK(inp);
5262 /* destroyed the asoc */
5263 #ifdef SCTP_LOG_CLOSING
5264 sctp_log_closing(inp, NULL, 11);
5272 * determine if a destination is "reachable" based upon the addresses bound
5273 * to the current endpoint (e.g. only v4 or v6 currently bound)
5276 * FIX: if we allow assoc-level bindx(), then this needs to be fixed to use
5277 * assoc level v4/v6 flags, as the assoc *may* not have the same address
5278 * types bound as its endpoint
5281 sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
5283 struct sctp_inpcb *inp;
5287 * No locks here, the TCB, in all cases is already locked and an
5288 * assoc is up. There is either a INP lock by the caller applied (in
5289 * asconf case when deleting an address) or NOT in the HB case,
5290 * however if HB then the INP increment is up and the INP will not
5291 * be removed (on top of the fact that we have a TCB lock). So we
5292 * only want to read the sctp_flags, which is either bound-all or
5293 * not.. no protection needed since once an assoc is up you can't be
5294 * changing your binding.
5296 inp = stcb->sctp_ep;
5297 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5298 /* if bound all, destination is not restricted */
5300 * RRS: Question during lock work: Is this correct? If you
5301 * are bound-all you still might need to obey the V4--V6
5302 * flags??? IMO this bound-all stuff needs to be removed!
5306 /* NOTE: all "scope" checks are done when local addresses are added */
5307 switch (destaddr->sa_family) {
5310 answer = inp->ip_inp.inp.inp_vflag & INP_IPV6;
5315 answer = inp->ip_inp.inp.inp_vflag & INP_IPV4;
5319 /* invalid family, so it's unreachable */
5327 * update the inp_vflags on an endpoint
5330 sctp_update_ep_vflag(struct sctp_inpcb *inp)
5332 struct sctp_laddr *laddr;
5334 /* first clear the flag */
5335 inp->ip_inp.inp.inp_vflag = 0;
5336 /* set the flag based on addresses on the ep list */
5337 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5338 if (laddr->ifa == NULL) {
5339 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
5343 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
5346 switch (laddr->ifa->address.sa.sa_family) {
5349 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5354 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5364 * Add the address to the endpoint local address list There is nothing to be
5365 * done if we are bound to all addresses
5368 sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
5370 struct sctp_laddr *laddr;
5371 struct sctp_tcb *stcb;
5376 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5377 /* You are already bound to all. You have it already */
5381 if (ifa->address.sa.sa_family == AF_INET6) {
5382 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5383 /* Can't bind a non-useable addr. */
5388 /* first, is it already present? */
5389 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5390 if (laddr->ifa == ifa) {
5397 /* Not in the ep list */
5398 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action);
5402 /* update inp_vflag flags */
5403 switch (ifa->address.sa.sa_family) {
5406 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5411 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5417 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5418 sctp_add_local_addr_restricted(stcb, ifa);
5426 * select a new (hopefully reachable) destination net (should only be used
5427 * when we deleted an ep addr that is the only usable source address to reach
5428 * the destination net)
5431 sctp_select_primary_destination(struct sctp_tcb *stcb)
5433 struct sctp_nets *net;
5435 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5436 /* for now, we'll just pick the first reachable one we find */
5437 if (net->dest_state & SCTP_ADDR_UNCONFIRMED)
5439 if (sctp_destination_is_reachable(stcb,
5440 (struct sockaddr *)&net->ro._l_addr)) {
5441 /* found a reachable destination */
5442 stcb->asoc.primary_destination = net;
5445 /* I can't there from here! ...we're gonna die shortly... */
5450 * Delete the address from the endpoint local address list. There is nothing
5451 * to be done if we are bound to all addresses
5454 sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa)
5456 struct sctp_laddr *laddr;
5460 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5461 /* You are already bound to all. You have it already */
5464 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5465 if (laddr->ifa == ifa) {
5470 if (fnd && (inp->laddr_count < 2)) {
5471 /* can't delete unless there are at LEAST 2 addresses */
5476 * clean up any use of this address go through our
5477 * associations and clear any last_used_address that match
5478 * this one for each assoc, see if a new primary_destination
5481 struct sctp_tcb *stcb;
5483 /* clean up "next_addr_touse" */
5484 if (inp->next_addr_touse == laddr)
5485 /* delete this address */
5486 inp->next_addr_touse = NULL;
5488 /* clean up "last_used_address" */
5489 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5490 struct sctp_nets *net;
5492 SCTP_TCB_LOCK(stcb);
5493 if (stcb->asoc.last_used_address == laddr)
5494 /* delete this address */
5495 stcb->asoc.last_used_address = NULL;
5497 * Now spin through all the nets and purge any ref
5500 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5501 if (net->ro._s_addr == laddr->ifa) {
5502 /* Yep, purge src address selected */
5505 /* delete this address if cached */
5509 net->ro.ro_rt = NULL;
5511 sctp_free_ifa(net->ro._s_addr);
5512 net->ro._s_addr = NULL;
5513 net->src_addr_selected = 0;
5516 SCTP_TCB_UNLOCK(stcb);
5517 } /* for each tcb */
5518 /* remove it from the ep list */
5519 sctp_remove_laddr(laddr);
5521 /* update inp_vflag flags */
5522 sctp_update_ep_vflag(inp);
5528 * Add the address to the TCB local address restricted list.
5529 * This is a "pending" address list (eg. addresses waiting for an
5530 * ASCONF-ACK response) and cannot be used as a valid source address.
5533 sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5535 struct sctp_laddr *laddr;
5536 struct sctpladdr *list;
5539 * Assumes TCB is locked.. and possibly the INP. May need to
5540 * confirm/fix that if we need it and is not the case.
5542 list = &stcb->asoc.sctp_restricted_addrs;
5545 if (ifa->address.sa.sa_family == AF_INET6) {
5546 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5547 /* Can't bind a non-existent addr. */
5552 /* does the address already exist? */
5553 LIST_FOREACH(laddr, list, sctp_nxt_addr) {
5554 if (laddr->ifa == ifa) {
5559 /* add to the list */
5560 (void)sctp_insert_laddr(list, ifa, 0);
5565 * Remove a local address from the TCB local address restricted list
5568 sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5570 struct sctp_inpcb *inp;
5571 struct sctp_laddr *laddr;
5574 * This is called by asconf work. It is assumed that a) The TCB is
5575 * locked and b) The INP is locked. This is true in as much as I can
5576 * trace through the entry asconf code where I did these locks.
5577 * Again, the ASCONF code is a bit different in that it does lock
5578 * the INP during its work often times. This must be since we don't
5579 * want other proc's looking up things while what they are looking
5580 * up is changing :-D
5583 inp = stcb->sctp_ep;
5584 /* if subset bound and don't allow ASCONF's, can't delete last */
5585 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
5586 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
5587 if (stcb->sctp_ep->laddr_count < 2) {
5588 /* can't delete last address */
5592 LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
5593 /* remove the address if it exists */
5594 if (laddr->ifa == NULL)
5596 if (laddr->ifa == ifa) {
5597 sctp_remove_laddr(laddr);
5602 /* address not found! */
5607 * Temporarily remove for __APPLE__ until we use the Tiger equivalents
5610 static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;
5611 static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR;
5615 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5616 struct sctp_mcore_ctrl *sctp_mcore_workers = NULL;
5617 int *sctp_cpuarry = NULL;
5619 sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use)
5621 /* Queue a packet to a processor for the specified core */
5622 struct sctp_mcore_queue *qent;
5623 struct sctp_mcore_ctrl *wkq;
5626 if (sctp_mcore_workers == NULL) {
5627 /* Something went way bad during setup */
5628 sctp_input_with_port(m, off, 0);
5631 SCTP_MALLOC(qent, struct sctp_mcore_queue *,
5632 (sizeof(struct sctp_mcore_queue)),
5635 /* This is trouble */
5636 sctp_input_with_port(m, off, 0);
5643 wkq = &sctp_mcore_workers[cpu_to_use];
5644 SCTP_MCORE_QLOCK(wkq);
5646 TAILQ_INSERT_TAIL(&wkq->que, qent, next);
5647 if (wkq->running == 0) {
5650 SCTP_MCORE_QUNLOCK(wkq);
5652 wakeup(&wkq->running);
5657 sctp_mcore_thread(void *arg)
5660 struct sctp_mcore_ctrl *wkq;
5661 struct sctp_mcore_queue *qent;
5663 wkq = (struct sctp_mcore_ctrl *)arg;
5667 /* Wait for first tickle */
5668 SCTP_MCORE_LOCK(wkq);
5670 msleep(&wkq->running,
5672 0, "wait for pkt", 0);
5673 SCTP_MCORE_UNLOCK(wkq);
5675 /* Bind to our cpu */
5676 thread_lock(curthread);
5677 sched_bind(curthread, wkq->cpuid);
5678 thread_unlock(curthread);
5680 /* Now lets start working */
5681 SCTP_MCORE_LOCK(wkq);
5682 /* Now grab lock and go */
5684 SCTP_MCORE_QLOCK(wkq);
5687 qent = TAILQ_FIRST(&wkq->que);
5689 TAILQ_REMOVE(&wkq->que, qent, next);
5690 SCTP_MCORE_QUNLOCK(wkq);
5691 CURVNET_SET(qent->vn);
5695 SCTP_FREE(qent, SCTP_M_MCORE);
5697 sctp_input_with_port(m, off, 0);
5699 SCTP_PRINTF("V6 not yet supported\n");
5703 SCTP_MCORE_QLOCK(wkq);
5706 if (!TAILQ_EMPTY(&wkq->que)) {
5709 SCTP_MCORE_QUNLOCK(wkq);
5710 msleep(&wkq->running,
5712 0, "wait for pkt", 0);
5717 sctp_startup_mcore_threads(void)
5724 if (sctp_mcore_workers != NULL) {
5726 * Already been here in some previous vnet?
5730 SCTP_MALLOC(sctp_mcore_workers, struct sctp_mcore_ctrl *,
5731 ((mp_maxid + 1) * sizeof(struct sctp_mcore_ctrl)),
5733 if (sctp_mcore_workers == NULL) {
5737 memset(sctp_mcore_workers, 0, ((mp_maxid + 1) *
5738 sizeof(struct sctp_mcore_ctrl)));
5739 /* Init the structures */
5740 for (i = 0; i <= mp_maxid; i++) {
5741 TAILQ_INIT(&sctp_mcore_workers[i].que);
5742 SCTP_MCORE_LOCK_INIT(&sctp_mcore_workers[i]);
5743 SCTP_MCORE_QLOCK_INIT(&sctp_mcore_workers[i]);
5744 sctp_mcore_workers[i].cpuid = i;
5746 if (sctp_cpuarry == NULL) {
5747 SCTP_MALLOC(sctp_cpuarry, int *,
5748 (mp_ncpus * sizeof(int)),
5752 sctp_cpuarry[i] = cpu;
5756 /* Now start them all */
5758 (void)kproc_create(sctp_mcore_thread,
5759 (void *)&sctp_mcore_workers[cpu],
5760 &sctp_mcore_workers[cpu].thread_proc,
5774 * SCTP initialization for the PCB structures should be called by
5775 * the sctp_init() function.
5780 if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) {
5781 /* error I was called twice */
5784 SCTP_BASE_VAR(sctp_pcb_initialized) = 1;
5786 #if defined(SCTP_LOCAL_TRACE_BUF)
5787 bzero(&SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));
5789 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5790 SCTP_MALLOC(SCTP_BASE_STATS, struct sctpstat *,
5791 ((mp_maxid + 1) * sizeof(struct sctpstat)),
5794 (void)SCTP_GETTIME_TIMEVAL(&tv);
5795 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5796 bzero(SCTP_BASE_STATS, (sizeof(struct sctpstat) * (mp_maxid + 1)));
5797 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t) tv.tv_sec;
5798 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t) tv.tv_usec;
5800 bzero(&SCTP_BASE_STATS, sizeof(struct sctpstat));
5801 SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t) tv.tv_sec;
5802 SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t) tv.tv_usec;
5804 /* init the empty list of (All) Endpoints */
5805 LIST_INIT(&SCTP_BASE_INFO(listhead));
5808 /* init the hash table of endpoints */
5809 TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize));
5810 TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize));
5811 TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale));
5812 SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31),
5813 &SCTP_BASE_INFO(hashasocmark));
5814 SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5815 &SCTP_BASE_INFO(hashmark));
5816 SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5817 &SCTP_BASE_INFO(hashtcpmark));
5818 SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize);
5821 SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH,
5822 &SCTP_BASE_INFO(hashvrfmark));
5824 SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE,
5825 &SCTP_BASE_INFO(vrf_ifn_hashmark));
5826 /* init the zones */
5828 * FIX ME: Should check for NULL returns, but if it does fail we are
5829 * doomed to panic anyways... add later maybe.
5831 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep",
5832 sizeof(struct sctp_inpcb), maxsockets);
5834 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc",
5835 sizeof(struct sctp_tcb), sctp_max_number_of_assoc);
5837 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr",
5838 sizeof(struct sctp_laddr),
5839 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5841 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr",
5842 sizeof(struct sctp_nets),
5843 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5845 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk",
5846 sizeof(struct sctp_tmit_chunk),
5847 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5849 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq",
5850 sizeof(struct sctp_queued_to_read),
5851 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5853 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out",
5854 sizeof(struct sctp_stream_queue_pending),
5855 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5857 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf",
5858 sizeof(struct sctp_asconf),
5859 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5861 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack",
5862 sizeof(struct sctp_asconf_ack),
5863 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5866 /* Master Lock INIT for info structure */
5867 SCTP_INP_INFO_LOCK_INIT();
5868 SCTP_STATLOG_INIT_LOCK();
5870 SCTP_IPI_COUNT_INIT();
5871 SCTP_IPI_ADDR_INIT();
5872 #ifdef SCTP_PACKET_LOGGING
5873 SCTP_IP_PKTLOG_INIT();
5875 LIST_INIT(&SCTP_BASE_INFO(addr_wq));
5877 SCTP_WQ_ADDR_INIT();
5878 /* not sure if we need all the counts */
5879 SCTP_BASE_INFO(ipi_count_ep) = 0;
5880 /* assoc/tcb zone info */
5881 SCTP_BASE_INFO(ipi_count_asoc) = 0;
5882 /* local addrlist zone info */
5883 SCTP_BASE_INFO(ipi_count_laddr) = 0;
5884 /* remote addrlist zone info */
5885 SCTP_BASE_INFO(ipi_count_raddr) = 0;
5887 SCTP_BASE_INFO(ipi_count_chunk) = 0;
5889 /* socket queue zone info */
5890 SCTP_BASE_INFO(ipi_count_readq) = 0;
5892 /* stream out queue cont */
5893 SCTP_BASE_INFO(ipi_count_strmoq) = 0;
5895 SCTP_BASE_INFO(ipi_free_strmoq) = 0;
5896 SCTP_BASE_INFO(ipi_free_chunks) = 0;
5898 SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer));
5900 /* Init the TIMEWAIT list */
5901 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5902 LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]);
5904 sctp_startup_iterator();
5906 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
5907 sctp_startup_mcore_threads();
5911 * INIT the default VRF which for BSD is the only one, other O/S's
5912 * may have more. But initially they must start with one and then
5913 * add the VRF's as addresses are added.
5915 sctp_init_vrf_list(SCTP_DEFAULT_VRF);
5919 * Assumes that the SCTP_BASE_INFO() lock is NOT held.
5922 sctp_pcb_finish(void)
5924 struct sctp_vrflist *vrf_bucket;
5925 struct sctp_vrf *vrf, *nvrf;
5926 struct sctp_ifn *ifn, *nifn;
5927 struct sctp_ifa *ifa, *nifa;
5928 struct sctpvtaghead *chain;
5929 struct sctp_tagblock *twait_block, *prev_twait_block;
5930 struct sctp_laddr *wi, *nwi;
5932 struct sctp_iterator *it, *nit;
5934 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
5935 SCTP_PRINTF("%s: race condition on teardown.\n", __func__);
5938 SCTP_BASE_VAR(sctp_pcb_initialized) = 0;
5940 * In FreeBSD the iterator thread never exits but we do clean up.
5941 * The only way FreeBSD reaches here is if we have VRF's but we
5942 * still add the ifdef to make it compile on old versions.
5945 SCTP_IPI_ITERATOR_WQ_LOCK();
5947 * sctp_iterator_worker() might be working on an it entry without
5948 * holding the lock. We won't find it on the list either and
5949 * continue and free/destroy it. While holding the lock, spin, to
5950 * avoid the race condition as sctp_iterator_worker() will have to
5951 * wait to re-aquire the lock.
5953 if (sctp_it_ctl.iterator_running != 0 || sctp_it_ctl.cur_it != NULL) {
5954 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5955 SCTP_PRINTF("%s: Iterator running while we held the lock. Retry. "
5956 "cur_it=%p\n", __func__, sctp_it_ctl.cur_it);
5960 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
5961 if (it->vn != curvnet) {
5964 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
5965 if (it->function_atend != NULL) {
5966 (*it->function_atend) (it->pointer, it->val);
5968 SCTP_FREE(it, SCTP_M_ITER);
5970 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5971 SCTP_ITERATOR_LOCK();
5972 if ((sctp_it_ctl.cur_it) &&
5973 (sctp_it_ctl.cur_it->vn == curvnet)) {
5974 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
5976 SCTP_ITERATOR_UNLOCK();
5977 SCTP_OS_TIMER_STOP_DRAIN(&SCTP_BASE_INFO(addr_wq_timer.timer));
5978 SCTP_WQ_ADDR_LOCK();
5979 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
5980 LIST_REMOVE(wi, sctp_nxt_addr);
5981 SCTP_DECR_LADDR_COUNT();
5982 if (wi->action == SCTP_DEL_IP_ADDRESS) {
5983 SCTP_FREE(wi->ifa, SCTP_M_IFA);
5985 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi);
5987 SCTP_WQ_ADDR_UNLOCK();
5990 * free the vrf/ifn/ifa lists and hashes (be sure address monitor is
5993 vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))];
5994 LIST_FOREACH_SAFE(vrf, vrf_bucket, next_vrf, nvrf) {
5995 LIST_FOREACH_SAFE(ifn, &vrf->ifnlist, next_ifn, nifn) {
5996 LIST_FOREACH_SAFE(ifa, &ifn->ifalist, next_ifa, nifa) {
5998 LIST_REMOVE(ifa, next_bucket);
5999 LIST_REMOVE(ifa, next_ifa);
6000 SCTP_FREE(ifa, SCTP_M_IFA);
6003 LIST_REMOVE(ifn, next_bucket);
6004 LIST_REMOVE(ifn, next_ifn);
6005 SCTP_FREE(ifn, SCTP_M_IFN);
6007 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
6009 LIST_REMOVE(vrf, next_vrf);
6010 SCTP_FREE(vrf, SCTP_M_VRF);
6012 /* free the vrf hashes */
6013 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark));
6014 SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark));
6017 * free the TIMEWAIT list elements malloc'd in the function
6018 * sctp_add_vtag_to_timewait()...
6020 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
6021 chain = &SCTP_BASE_INFO(vtag_timewait)[i];
6022 if (!LIST_EMPTY(chain)) {
6023 prev_twait_block = NULL;
6024 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6025 if (prev_twait_block) {
6026 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
6028 prev_twait_block = twait_block;
6030 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
6034 /* free the locks and mutexes */
6035 #ifdef SCTP_PACKET_LOGGING
6036 SCTP_IP_PKTLOG_DESTROY();
6038 SCTP_IPI_ADDR_DESTROY();
6039 SCTP_STATLOG_DESTROY();
6040 SCTP_INP_INFO_LOCK_DESTROY();
6042 SCTP_WQ_ADDR_DESTROY();
6044 /* Get rid of other stuff too. */
6045 if (SCTP_BASE_INFO(sctp_asochash) != NULL)
6046 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark));
6047 if (SCTP_BASE_INFO(sctp_ephash) != NULL)
6048 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark));
6049 if (SCTP_BASE_INFO(sctp_tcpephash) != NULL)
6050 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark));
6052 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep));
6053 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc));
6054 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr));
6055 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net));
6056 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk));
6057 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq));
6058 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq));
6059 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf));
6060 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack));
6061 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
6062 SCTP_FREE(SCTP_BASE_STATS, SCTP_M_MCORE);
6068 sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m,
6069 int offset, int limit,
6070 struct sockaddr *src, struct sockaddr *dst,
6071 struct sockaddr *altsa, uint16_t port)
6074 * grub through the INIT pulling addresses and loading them to the
6075 * nets structure in the asoc. The from address in the mbuf should
6076 * also be loaded (if it is not already). This routine can be called
6077 * with either INIT or INIT-ACK's as long as the m points to the IP
6078 * packet and the offset points to the beginning of the parameters.
6080 struct sctp_inpcb *inp;
6081 struct sctp_nets *net, *nnet, *net_tmp;
6082 struct sctp_paramhdr *phdr, parm_buf;
6083 struct sctp_tcb *stcb_tmp;
6084 uint16_t ptype, plen;
6085 struct sockaddr *sa;
6086 uint8_t random_store[SCTP_PARAM_BUFFER_SIZE];
6087 struct sctp_auth_random *p_random = NULL;
6088 uint16_t random_len = 0;
6089 uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE];
6090 struct sctp_auth_hmac_algo *hmacs = NULL;
6091 uint16_t hmacs_len = 0;
6092 uint8_t saw_asconf = 0;
6093 uint8_t saw_asconf_ack = 0;
6094 uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE];
6095 struct sctp_auth_chunk_list *chunks = NULL;
6096 uint16_t num_chunks = 0;
6097 sctp_key_t *new_key;
6099 int got_random = 0, got_hmacs = 0, got_chklist = 0;
6100 uint8_t peer_supports_ecn;
6101 uint8_t peer_supports_prsctp;
6102 uint8_t peer_supports_auth;
6103 uint8_t peer_supports_asconf;
6104 uint8_t peer_supports_asconf_ack;
6105 uint8_t peer_supports_reconfig;
6106 uint8_t peer_supports_nrsack;
6107 uint8_t peer_supports_pktdrop;
6108 uint8_t peer_supports_idata;
6111 struct sockaddr_in sin;
6115 struct sockaddr_in6 sin6;
6119 /* First get the destination address setup too. */
6121 memset(&sin, 0, sizeof(sin));
6122 sin.sin_family = AF_INET;
6123 sin.sin_len = sizeof(sin);
6124 sin.sin_port = stcb->rport;
6127 memset(&sin6, 0, sizeof(sin6));
6128 sin6.sin6_family = AF_INET6;
6129 sin6.sin6_len = sizeof(struct sockaddr_in6);
6130 sin6.sin6_port = stcb->rport;
6137 peer_supports_idata = 0;
6138 peer_supports_ecn = 0;
6139 peer_supports_prsctp = 0;
6140 peer_supports_auth = 0;
6141 peer_supports_asconf = 0;
6142 peer_supports_reconfig = 0;
6143 peer_supports_nrsack = 0;
6144 peer_supports_pktdrop = 0;
6145 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
6146 /* mark all addresses that we have currently on the list */
6147 net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC;
6149 /* does the source address already exist? if so skip it */
6150 inp = stcb->sctp_ep;
6151 atomic_add_int(&stcb->asoc.refcnt, 1);
6152 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, dst, stcb);
6153 atomic_add_int(&stcb->asoc.refcnt, -1);
6155 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) {
6156 /* we must add the source address */
6157 /* no scope set here since we have a tcb already. */
6158 switch (sa->sa_family) {
6161 if (stcb->asoc.scope.ipv4_addr_legal) {
6162 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) {
6170 if (stcb->asoc.scope.ipv6_addr_legal) {
6171 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
6181 if (net_tmp != NULL && stcb_tmp == stcb) {
6182 net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC;
6183 } else if (stcb_tmp != stcb) {
6184 /* It belongs to another association? */
6186 SCTP_TCB_UNLOCK(stcb_tmp);
6190 if (stcb->asoc.state == 0) {
6191 /* the assoc was freed? */
6194 /* now we must go through each of the params. */
6195 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
6197 ptype = ntohs(phdr->param_type);
6198 plen = ntohs(phdr->param_length);
6200 * SCTP_PRINTF("ptype => %0x, plen => %d\n",
6201 * (uint32_t)ptype, (int)plen);
6203 if (offset + plen > limit) {
6210 if (ptype == SCTP_IPV4_ADDRESS) {
6211 if (stcb->asoc.scope.ipv4_addr_legal) {
6212 struct sctp_ipv4addr_param *p4, p4_buf;
6214 /* ok get the v4 address and check/add */
6215 phdr = sctp_get_next_param(m, offset,
6216 (struct sctp_paramhdr *)&p4_buf,
6218 if (plen != sizeof(struct sctp_ipv4addr_param) ||
6222 p4 = (struct sctp_ipv4addr_param *)phdr;
6223 sin.sin_addr.s_addr = p4->addr;
6224 if (IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) {
6225 /* Skip multi-cast addresses */
6228 if ((sin.sin_addr.s_addr == INADDR_BROADCAST) ||
6229 (sin.sin_addr.s_addr == INADDR_ANY)) {
6232 sa = (struct sockaddr *)&sin;
6233 inp = stcb->sctp_ep;
6234 atomic_add_int(&stcb->asoc.refcnt, 1);
6235 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6237 atomic_add_int(&stcb->asoc.refcnt, -1);
6239 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) ||
6241 /* we must add the source address */
6243 * no scope set since we have a tcb
6248 * we must validate the state again
6252 if (stcb->asoc.state == 0) {
6253 /* the assoc was freed? */
6256 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) {
6259 } else if (stcb_tmp == stcb) {
6260 if (stcb->asoc.state == 0) {
6261 /* the assoc was freed? */
6267 ~SCTP_ADDR_NOT_IN_ASSOC;
6271 * strange, address is in another
6272 * assoc? straighten out locks.
6275 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6276 struct mbuf *op_err;
6277 char msg[SCTP_DIAG_INFO_LEN];
6283 snprintf(msg, sizeof(msg),
6284 "%s:%d at %s", __FILE__, __LINE__, __func__);
6285 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
6287 sctp_abort_an_association(stcb_tmp->sctp_ep,
6289 SCTP_SO_NOT_LOCKED);
6292 SCTP_TCB_UNLOCK(stcb_tmp);
6294 if (stcb->asoc.state == 0) {
6295 /* the assoc was freed? */
6304 if (ptype == SCTP_IPV6_ADDRESS) {
6305 if (stcb->asoc.scope.ipv6_addr_legal) {
6306 /* ok get the v6 address and check/add */
6307 struct sctp_ipv6addr_param *p6, p6_buf;
6309 phdr = sctp_get_next_param(m, offset,
6310 (struct sctp_paramhdr *)&p6_buf,
6312 if (plen != sizeof(struct sctp_ipv6addr_param) ||
6316 p6 = (struct sctp_ipv6addr_param *)phdr;
6317 memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
6319 if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) {
6320 /* Skip multi-cast addresses */
6323 if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) {
6325 * Link local make no sense without
6330 sa = (struct sockaddr *)&sin6;
6331 inp = stcb->sctp_ep;
6332 atomic_add_int(&stcb->asoc.refcnt, 1);
6333 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6335 atomic_add_int(&stcb->asoc.refcnt, -1);
6336 if (stcb_tmp == NULL &&
6337 (inp == stcb->sctp_ep || inp == NULL)) {
6339 * we must validate the state again
6343 if (stcb->asoc.state == 0) {
6344 /* the assoc was freed? */
6348 * we must add the address, no scope
6351 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) {
6354 } else if (stcb_tmp == stcb) {
6356 * we must validate the state again
6359 if (stcb->asoc.state == 0) {
6360 /* the assoc was freed? */
6366 ~SCTP_ADDR_NOT_IN_ASSOC;
6370 * strange, address is in another
6371 * assoc? straighten out locks.
6374 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6375 struct mbuf *op_err;
6376 char msg[SCTP_DIAG_INFO_LEN];
6382 snprintf(msg, sizeof(msg),
6383 "%s:%d at %s", __FILE__, __LINE__, __func__);
6384 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
6386 sctp_abort_an_association(stcb_tmp->sctp_ep,
6388 SCTP_SO_NOT_LOCKED);
6391 SCTP_TCB_UNLOCK(stcb_tmp);
6393 if (stcb->asoc.state == 0) {
6394 /* the assoc was freed? */
6402 if (ptype == SCTP_ECN_CAPABLE) {
6403 peer_supports_ecn = 1;
6404 } else if (ptype == SCTP_ULP_ADAPTATION) {
6405 if (stcb->asoc.state != SCTP_STATE_OPEN) {
6406 struct sctp_adaptation_layer_indication ai,
6409 phdr = sctp_get_next_param(m, offset,
6410 (struct sctp_paramhdr *)&ai, sizeof(ai));
6411 aip = (struct sctp_adaptation_layer_indication *)phdr;
6413 stcb->asoc.peers_adaptation = ntohl(aip->indication);
6414 stcb->asoc.adaptation_needed = 1;
6417 } else if (ptype == SCTP_SET_PRIM_ADDR) {
6418 struct sctp_asconf_addr_param lstore, *fee;
6420 struct sockaddr *lsa = NULL;
6423 struct sctp_asconf_addrv4_param *fii;
6427 if (stcb->asoc.asconf_supported == 0) {
6430 if (plen > sizeof(lstore)) {
6433 phdr = sctp_get_next_param(m, offset,
6434 (struct sctp_paramhdr *)&lstore,
6435 min(plen, sizeof(lstore)));
6439 fee = (struct sctp_asconf_addr_param *)phdr;
6440 lptype = ntohs(fee->addrp.ph.param_type);
6443 case SCTP_IPV4_ADDRESS:
6445 sizeof(struct sctp_asconf_addrv4_param)) {
6446 SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n",
6447 (int)sizeof(struct sctp_asconf_addrv4_param),
6450 fii = (struct sctp_asconf_addrv4_param *)fee;
6451 sin.sin_addr.s_addr = fii->addrp.addr;
6452 lsa = (struct sockaddr *)&sin;
6457 case SCTP_IPV6_ADDRESS:
6459 sizeof(struct sctp_asconf_addr_param)) {
6460 SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n",
6461 (int)sizeof(struct sctp_asconf_addr_param),
6464 memcpy(sin6.sin6_addr.s6_addr,
6466 sizeof(fee->addrp.addr));
6467 lsa = (struct sockaddr *)&sin6;
6475 (void)sctp_set_primary_addr(stcb, sa, NULL);
6477 } else if (ptype == SCTP_HAS_NAT_SUPPORT) {
6478 stcb->asoc.peer_supports_nat = 1;
6479 } else if (ptype == SCTP_PRSCTP_SUPPORTED) {
6480 /* Peer supports pr-sctp */
6481 peer_supports_prsctp = 1;
6482 } else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) {
6483 /* A supported extension chunk */
6484 struct sctp_supported_chunk_types_param *pr_supported;
6485 uint8_t local_store[SCTP_PARAM_BUFFER_SIZE];
6488 phdr = sctp_get_next_param(m, offset,
6489 (struct sctp_paramhdr *)&local_store, min(sizeof(local_store), plen));
6493 pr_supported = (struct sctp_supported_chunk_types_param *)phdr;
6494 num_ent = plen - sizeof(struct sctp_paramhdr);
6495 for (i = 0; i < num_ent; i++) {
6496 switch (pr_supported->chunk_types[i]) {
6498 peer_supports_asconf = 1;
6500 case SCTP_ASCONF_ACK:
6501 peer_supports_asconf_ack = 1;
6503 case SCTP_FORWARD_CUM_TSN:
6504 peer_supports_prsctp = 1;
6506 case SCTP_PACKET_DROPPED:
6507 peer_supports_pktdrop = 1;
6509 case SCTP_NR_SELECTIVE_ACK:
6510 peer_supports_nrsack = 1;
6512 case SCTP_STREAM_RESET:
6513 peer_supports_reconfig = 1;
6515 case SCTP_AUTHENTICATION:
6516 peer_supports_auth = 1;
6519 peer_supports_idata = 1;
6522 /* one I have not learned yet */
6527 } else if (ptype == SCTP_RANDOM) {
6528 if (plen > sizeof(random_store))
6531 /* already processed a RANDOM */
6534 phdr = sctp_get_next_param(m, offset,
6535 (struct sctp_paramhdr *)random_store,
6536 min(sizeof(random_store), plen));
6539 p_random = (struct sctp_auth_random *)phdr;
6540 random_len = plen - sizeof(*p_random);
6541 /* enforce the random length */
6542 if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) {
6543 SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n");
6547 } else if (ptype == SCTP_HMAC_LIST) {
6551 if (plen > sizeof(hmacs_store))
6554 /* already processed a HMAC list */
6557 phdr = sctp_get_next_param(m, offset,
6558 (struct sctp_paramhdr *)hmacs_store,
6559 min(plen, sizeof(hmacs_store)));
6562 hmacs = (struct sctp_auth_hmac_algo *)phdr;
6563 hmacs_len = plen - sizeof(*hmacs);
6564 num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]);
6565 /* validate the hmac list */
6566 if (sctp_verify_hmac_param(hmacs, num_hmacs)) {
6569 if (stcb->asoc.peer_hmacs != NULL)
6570 sctp_free_hmaclist(stcb->asoc.peer_hmacs);
6571 stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs);
6572 if (stcb->asoc.peer_hmacs != NULL) {
6573 for (i = 0; i < num_hmacs; i++) {
6574 (void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs,
6575 ntohs(hmacs->hmac_ids[i]));
6579 } else if (ptype == SCTP_CHUNK_LIST) {
6582 if (plen > sizeof(chunks_store))
6585 /* already processed a Chunks list */
6588 phdr = sctp_get_next_param(m, offset,
6589 (struct sctp_paramhdr *)chunks_store,
6590 min(plen, sizeof(chunks_store)));
6593 chunks = (struct sctp_auth_chunk_list *)phdr;
6594 num_chunks = plen - sizeof(*chunks);
6595 if (stcb->asoc.peer_auth_chunks != NULL)
6596 sctp_clear_chunklist(stcb->asoc.peer_auth_chunks);
6598 stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist();
6599 for (i = 0; i < num_chunks; i++) {
6600 (void)sctp_auth_add_chunk(chunks->chunk_types[i],
6601 stcb->asoc.peer_auth_chunks);
6602 /* record asconf/asconf-ack if listed */
6603 if (chunks->chunk_types[i] == SCTP_ASCONF)
6605 if (chunks->chunk_types[i] == SCTP_ASCONF_ACK)
6610 } else if ((ptype == SCTP_HEARTBEAT_INFO) ||
6611 (ptype == SCTP_STATE_COOKIE) ||
6612 (ptype == SCTP_UNRECOG_PARAM) ||
6613 (ptype == SCTP_COOKIE_PRESERVE) ||
6614 (ptype == SCTP_SUPPORTED_ADDRTYPE) ||
6615 (ptype == SCTP_ADD_IP_ADDRESS) ||
6616 (ptype == SCTP_DEL_IP_ADDRESS) ||
6617 (ptype == SCTP_ERROR_CAUSE_IND) ||
6618 (ptype == SCTP_SUCCESS_REPORT)) {
6621 if ((ptype & 0x8000) == 0x0000) {
6623 * must stop processing the rest of the
6624 * param's. Any report bits were handled
6626 * sctp_arethere_unrecognized_parameters()
6627 * when the INIT or INIT-ACK was first seen.
6634 offset += SCTP_SIZE32(plen);
6635 if (offset >= limit) {
6638 phdr = sctp_get_next_param(m, offset, &parm_buf,
6641 /* Now check to see if we need to purge any addresses */
6642 TAILQ_FOREACH_SAFE(net, &stcb->asoc.nets, sctp_next, nnet) {
6643 if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) ==
6644 SCTP_ADDR_NOT_IN_ASSOC) {
6645 /* This address has been removed from the asoc */
6646 /* remove and free it */
6647 stcb->asoc.numnets--;
6648 TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next);
6649 sctp_free_remote_addr(net);
6650 if (net == stcb->asoc.primary_destination) {
6651 stcb->asoc.primary_destination = NULL;
6652 sctp_select_primary_destination(stcb);
6656 if ((stcb->asoc.ecn_supported == 1) &&
6657 (peer_supports_ecn == 0)) {
6658 stcb->asoc.ecn_supported = 0;
6660 if ((stcb->asoc.prsctp_supported == 1) &&
6661 (peer_supports_prsctp == 0)) {
6662 stcb->asoc.prsctp_supported = 0;
6664 if ((stcb->asoc.auth_supported == 1) &&
6665 ((peer_supports_auth == 0) ||
6666 (got_random == 0) || (got_hmacs == 0))) {
6667 stcb->asoc.auth_supported = 0;
6669 if ((stcb->asoc.asconf_supported == 1) &&
6670 ((peer_supports_asconf == 0) || (peer_supports_asconf_ack == 0) ||
6671 (stcb->asoc.auth_supported == 0) ||
6672 (saw_asconf == 0) || (saw_asconf_ack == 0))) {
6673 stcb->asoc.asconf_supported = 0;
6675 if ((stcb->asoc.reconfig_supported == 1) &&
6676 (peer_supports_reconfig == 0)) {
6677 stcb->asoc.reconfig_supported = 0;
6679 if ((stcb->asoc.idata_supported == 1) &&
6680 (peer_supports_idata == 0)) {
6681 stcb->asoc.idata_supported = 0;
6683 if ((stcb->asoc.nrsack_supported == 1) &&
6684 (peer_supports_nrsack == 0)) {
6685 stcb->asoc.nrsack_supported = 0;
6687 if ((stcb->asoc.pktdrop_supported == 1) &&
6688 (peer_supports_pktdrop == 0)) {
6689 stcb->asoc.pktdrop_supported = 0;
6691 /* validate authentication required parameters */
6692 if ((peer_supports_auth == 0) && (got_chklist == 1)) {
6693 /* peer does not support auth but sent a chunks list? */
6696 if ((peer_supports_asconf == 1) && (peer_supports_auth == 0)) {
6697 /* peer supports asconf but not auth? */
6699 } else if ((peer_supports_asconf == 1) &&
6700 (peer_supports_auth == 1) &&
6701 ((saw_asconf == 0) || (saw_asconf_ack == 0))) {
6704 /* concatenate the full random key */
6705 keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len;
6706 if (chunks != NULL) {
6707 keylen += sizeof(*chunks) + num_chunks;
6709 new_key = sctp_alloc_key(keylen);
6710 if (new_key != NULL) {
6711 /* copy in the RANDOM */
6712 if (p_random != NULL) {
6713 keylen = sizeof(*p_random) + random_len;
6714 bcopy(p_random, new_key->key, keylen);
6716 /* append in the AUTH chunks */
6717 if (chunks != NULL) {
6718 bcopy(chunks, new_key->key + keylen,
6719 sizeof(*chunks) + num_chunks);
6720 keylen += sizeof(*chunks) + num_chunks;
6722 /* append in the HMACs */
6723 if (hmacs != NULL) {
6724 bcopy(hmacs, new_key->key + keylen,
6725 sizeof(*hmacs) + hmacs_len);
6728 /* failed to get memory for the key */
6731 if (stcb->asoc.authinfo.peer_random != NULL)
6732 sctp_free_key(stcb->asoc.authinfo.peer_random);
6733 stcb->asoc.authinfo.peer_random = new_key;
6734 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid);
6735 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid);
6741 sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa,
6742 struct sctp_nets *net)
6744 /* make sure the requested primary address exists in the assoc */
6745 if (net == NULL && sa)
6746 net = sctp_findnet(stcb, sa);
6749 /* didn't find the requested primary address! */
6752 /* set the primary address */
6753 if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
6754 /* Must be confirmed, so queue to set */
6755 net->dest_state |= SCTP_ADDR_REQ_PRIMARY;
6758 stcb->asoc.primary_destination = net;
6759 if (!(net->dest_state & SCTP_ADDR_PF) && (stcb->asoc.alternate)) {
6760 sctp_free_remote_addr(stcb->asoc.alternate);
6761 stcb->asoc.alternate = NULL;
6763 net = TAILQ_FIRST(&stcb->asoc.nets);
6764 if (net != stcb->asoc.primary_destination) {
6766 * first one on the list is NOT the primary
6767 * sctp_cmpaddr() is much more efficient if the
6768 * primary is the first on the list, make it so.
6770 TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6771 TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6778 sctp_is_vtag_good(uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now)
6781 * This function serves two purposes. It will see if a TAG can be
6782 * re-used and return 1 for yes it is ok and 0 for don't use that
6783 * tag. A secondary function it will do is purge out old tags that
6786 struct sctpvtaghead *chain;
6787 struct sctp_tagblock *twait_block;
6788 struct sctpasochead *head;
6789 struct sctp_tcb *stcb;
6792 SCTP_INP_INFO_RLOCK();
6793 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag,
6794 SCTP_BASE_INFO(hashasocmark))];
6795 LIST_FOREACH(stcb, head, sctp_asocs) {
6797 * We choose not to lock anything here. TCB's can't be
6798 * removed since we have the read lock, so they can't be
6799 * freed on us, same thing for the INP. I may be wrong with
6800 * this assumption, but we will go with it for now :-)
6802 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
6805 if (stcb->asoc.my_vtag == tag) {
6807 if (stcb->rport != rport) {
6810 if (stcb->sctp_ep->sctp_lport != lport) {
6813 /* Its a used tag set */
6814 SCTP_INP_INFO_RUNLOCK();
6818 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
6819 /* Now what about timed wait ? */
6820 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6822 * Block(s) are present, lets see if we have this tag in the
6825 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
6826 if (twait_block->vtag_block[i].v_tag == 0) {
6829 } else if ((long)twait_block->vtag_block[i].tv_sec_at_expire <
6831 /* Audit expires this guy */
6832 twait_block->vtag_block[i].tv_sec_at_expire = 0;
6833 twait_block->vtag_block[i].v_tag = 0;
6834 twait_block->vtag_block[i].lport = 0;
6835 twait_block->vtag_block[i].rport = 0;
6836 } else if ((twait_block->vtag_block[i].v_tag == tag) &&
6837 (twait_block->vtag_block[i].lport == lport) &&
6838 (twait_block->vtag_block[i].rport == rport)) {
6839 /* Bad tag, sorry :< */
6840 SCTP_INP_INFO_RUNLOCK();
6845 SCTP_INP_INFO_RUNLOCK();
6850 sctp_drain_mbufs(struct sctp_tcb *stcb)
6853 * We must hunt this association for MBUF's past the cumack (i.e.
6854 * out of order data that we can renege on).
6856 struct sctp_association *asoc;
6857 struct sctp_tmit_chunk *chk, *nchk;
6858 uint32_t cumulative_tsn_p1;
6859 struct sctp_queued_to_read *ctl, *nctl;
6864 /* We look for anything larger than the cum-ack + 1 */
6867 if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) {
6868 /* none we can reneg on. */
6871 SCTP_STAT_INCR(sctps_protocol_drains_done);
6872 cumulative_tsn_p1 = asoc->cumulative_tsn + 1;
6874 /* Ok that was fun, now we will drain all the inbound streams? */
6875 for (strmat = 0; strmat < asoc->streamincnt; strmat++) {
6876 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[strmat].inqueue, next_instrm, nctl) {
6877 if (SCTP_TSN_GT(ctl->sinfo_tsn, cumulative_tsn_p1)) {
6878 /* Yep it is above cum-ack */
6880 SCTP_CALC_TSN_TO_GAP(gap, ctl->sinfo_tsn, asoc->mapping_array_base_tsn);
6881 asoc->size_on_all_streams = sctp_sbspace_sub(asoc->size_on_all_streams, ctl->length);
6882 sctp_ucount_decr(asoc->cnt_on_all_streams);
6883 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6884 TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, ctl, next_instrm);
6886 sctp_m_freem(ctl->data);
6889 sctp_free_remote_addr(ctl->whoFrom);
6890 /* Now its reasm? */
6891 TAILQ_FOREACH_SAFE(chk, &ctl->reasm, sctp_next, nchk) {
6893 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.TSN_seq, asoc->mapping_array_base_tsn);
6894 asoc->size_on_reasm_queue = sctp_sbspace_sub(asoc->size_on_reasm_queue, chk->send_size);
6895 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6896 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6897 TAILQ_REMOVE(&ctl->reasm, chk, sctp_next);
6899 sctp_m_freem(chk->data);
6902 sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
6904 sctp_free_a_readq(stcb, ctl);
6907 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[strmat].uno_inqueue, next_instrm, nctl) {
6908 if (SCTP_TSN_GT(ctl->sinfo_tsn, cumulative_tsn_p1)) {
6909 /* Yep it is above cum-ack */
6911 SCTP_CALC_TSN_TO_GAP(gap, ctl->sinfo_tsn, asoc->mapping_array_base_tsn);
6912 asoc->size_on_all_streams = sctp_sbspace_sub(asoc->size_on_all_streams, ctl->length);
6913 sctp_ucount_decr(asoc->cnt_on_all_streams);
6914 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6915 TAILQ_REMOVE(&asoc->strmin[strmat].uno_inqueue, ctl, next_instrm);
6917 sctp_m_freem(ctl->data);
6920 sctp_free_remote_addr(ctl->whoFrom);
6921 /* Now its reasm? */
6922 TAILQ_FOREACH_SAFE(chk, &ctl->reasm, sctp_next, nchk) {
6924 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.TSN_seq, asoc->mapping_array_base_tsn);
6925 asoc->size_on_reasm_queue = sctp_sbspace_sub(asoc->size_on_reasm_queue, chk->send_size);
6926 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6927 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6928 TAILQ_REMOVE(&ctl->reasm, chk, sctp_next);
6930 sctp_m_freem(chk->data);
6933 sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
6935 sctp_free_a_readq(stcb, ctl);
6940 /* We must back down to see what the new highest is */
6941 for (i = asoc->highest_tsn_inside_map; SCTP_TSN_GE(i, asoc->mapping_array_base_tsn); i--) {
6942 SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn);
6943 if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) {
6944 asoc->highest_tsn_inside_map = i;
6950 asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1;
6953 * Question, should we go through the delivery queue? The
6954 * only reason things are on here is the app not reading OR
6955 * a p-d-api up. An attacker COULD send enough in to
6956 * initiate the PD-API and then send a bunch of stuff to
6957 * other streams... these would wind up on the delivery
6958 * queue.. and then we would not get to them. But in order
6959 * to do this I then have to back-track and un-deliver
6960 * sequence numbers in streams.. el-yucko. I think for now
6961 * we will NOT look at the delivery queue and leave it to be
6962 * something to consider later. An alternative would be to
6963 * abort the P-D-API with a notification and then deliver
6964 * the data.... Or another method might be to keep track of
6965 * how many times the situation occurs and if we see a
6966 * possible attack underway just abort the association.
6969 SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt);
6972 * Now do we need to find a new
6973 * asoc->highest_tsn_inside_map?
6975 asoc->last_revoke_count = cnt;
6976 (void)SCTP_OS_TIMER_STOP(&stcb->asoc.dack_timer.timer);
6977 /* sa_ignore NO_NULL_CHK */
6978 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
6979 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED);
6982 * Another issue, in un-setting the TSN's in the mapping array we
6983 * DID NOT adjust the highest_tsn marker. This will cause one of
6984 * two things to occur. It may cause us to do extra work in checking
6985 * for our mapping array movement. More importantly it may cause us
6986 * to SACK every datagram. This may not be a bad thing though since
6987 * we will recover once we get our cum-ack above and all this stuff
6988 * we dumped recovered.
6996 * We must walk the PCB lists for ALL associations here. The system
6997 * is LOW on MBUF's and needs help. This is where reneging will
6998 * occur. We really hope this does NOT happen!
7000 VNET_ITERATOR_DECL(vnet_iter);
7001 VNET_LIST_RLOCK_NOSLEEP();
7002 VNET_FOREACH(vnet_iter) {
7003 CURVNET_SET(vnet_iter);
7004 struct sctp_inpcb *inp;
7005 struct sctp_tcb *stcb;
7007 SCTP_STAT_INCR(sctps_protocol_drain_calls);
7008 if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
7015 SCTP_INP_INFO_RLOCK();
7016 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
7017 /* For each endpoint */
7018 SCTP_INP_RLOCK(inp);
7019 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
7020 /* For each association */
7021 SCTP_TCB_LOCK(stcb);
7022 sctp_drain_mbufs(stcb);
7023 SCTP_TCB_UNLOCK(stcb);
7025 SCTP_INP_RUNLOCK(inp);
7027 SCTP_INP_INFO_RUNLOCK();
7030 VNET_LIST_RUNLOCK_NOSLEEP();
7034 * start a new iterator
7035 * iterates through all endpoints and associations based on the pcb_state
7036 * flags and asoc_state. "af" (mandatory) is executed for all matching
7037 * assocs and "ef" (optional) is executed when the iterator completes.
7038 * "inpf" (optional) is executed for each new endpoint as it is being
7039 * iterated through. inpe (optional) is called when the inp completes
7040 * its way through all the stcbs.
7043 sctp_initiate_iterator(inp_func inpf,
7047 uint32_t pcb_features,
7048 uint32_t asoc_state,
7052 struct sctp_inpcb *s_inp,
7053 uint8_t chunk_output_off)
7055 struct sctp_iterator *it = NULL;
7060 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
7061 SCTP_PRINTF("%s: abort on initialize being %d\n", __func__,
7062 SCTP_BASE_VAR(sctp_pcb_initialized));
7065 SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator),
7068 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
7071 memset(it, 0, sizeof(*it));
7072 it->function_assoc = af;
7073 it->function_inp = inpf;
7075 it->done_current_ep = 0;
7077 it->done_current_ep = 1;
7078 it->function_atend = ef;
7081 it->pcb_flags = pcb_state;
7082 it->pcb_features = pcb_features;
7083 it->asoc_state = asoc_state;
7084 it->function_inp_end = inpe;
7085 it->no_chunk_output = chunk_output_off;
7088 /* Assume lock is held here */
7090 SCTP_INP_INCR_REF(it->inp);
7091 it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP;
7093 SCTP_INP_INFO_RLOCK();
7094 it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead));
7096 SCTP_INP_INCR_REF(it->inp);
7098 SCTP_INP_INFO_RUNLOCK();
7099 it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP;
7102 SCTP_IPI_ITERATOR_WQ_LOCK();
7103 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
7104 SCTP_IPI_ITERATOR_WQ_UNLOCK();
7105 SCTP_PRINTF("%s: rollback on initialize being %d it=%p\n", __func__,
7106 SCTP_BASE_VAR(sctp_pcb_initialized), it);
7107 SCTP_FREE(it, SCTP_M_ITER);
7110 TAILQ_INSERT_TAIL(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
7111 if (sctp_it_ctl.iterator_running == 0) {
7112 sctp_wakeup_iterator();
7114 SCTP_IPI_ITERATOR_WQ_UNLOCK();
7115 /* sa_ignore MEMLEAK {memory is put on the tailq for the iterator} */