2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
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5 * modification, are permitted provided that the following conditions are met:
7 * a) Redistributions of source code must retain the above copyright notice,
8 * this list of conditions and the following disclaimer.
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12 * the documentation and/or other materials provided with the distribution.
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20 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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31 /* $KAME: sctp_pcb.c,v 1.38 2005/03/06 16:04:18 itojun Exp $ */
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/udp.h>
51 VNET_DEFINE(struct sctp_base_info, system_base_info);
53 /* FIX: we don't handle multiple link local scopes */
54 /* "scopeless" replacement IN6_ARE_ADDR_EQUAL */
57 SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b)
59 struct sockaddr_in6 tmp_a, tmp_b;
61 memcpy(&tmp_a, a, sizeof(struct sockaddr_in6));
62 if (sa6_embedscope(&tmp_a, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
65 memcpy(&tmp_b, b, sizeof(struct sockaddr_in6));
66 if (sa6_embedscope(&tmp_b, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
69 return (IN6_ARE_ADDR_EQUAL(&tmp_a.sin6_addr, &tmp_b.sin6_addr));
75 sctp_fill_pcbinfo(struct sctp_pcbinfo *spcb)
78 * We really don't need to lock this, but I will just because it
81 SCTP_INP_INFO_RLOCK();
82 spcb->ep_count = SCTP_BASE_INFO(ipi_count_ep);
83 spcb->asoc_count = SCTP_BASE_INFO(ipi_count_asoc);
84 spcb->laddr_count = SCTP_BASE_INFO(ipi_count_laddr);
85 spcb->raddr_count = SCTP_BASE_INFO(ipi_count_raddr);
86 spcb->chk_count = SCTP_BASE_INFO(ipi_count_chunk);
87 spcb->readq_count = SCTP_BASE_INFO(ipi_count_readq);
88 spcb->stream_oque = SCTP_BASE_INFO(ipi_count_strmoq);
89 spcb->free_chunks = SCTP_BASE_INFO(ipi_free_chunks);
91 SCTP_INP_INFO_RUNLOCK();
95 * Addresses are added to VRF's (Virtual Router's). For BSD we
96 * have only the default VRF 0. We maintain a hash list of
97 * VRF's. Each VRF has its own list of sctp_ifn's. Each of
98 * these has a list of addresses. When we add a new address
99 * to a VRF we lookup the ifn/ifn_index, if the ifn does
100 * not exist we create it and add it to the list of IFN's
101 * within the VRF. Once we have the sctp_ifn, we add the
102 * address to the list. So we look something like:
105 * vrf-> ifn-> ifn -> ifn
107 * ... +--ifa-> ifa -> ifa
110 * We keep these seperate lists since the SCTP subsystem will
111 * point to these from its source address selection nets structure.
112 * When an address is deleted it does not happen right away on
113 * the SCTP side, it gets scheduled. What we do when a
114 * delete happens is immediately remove the address from
115 * the master list and decrement the refcount. As our
116 * addip iterator works through and frees the src address
117 * selection pointing to the sctp_ifa, eventually the refcount
118 * will reach 0 and we will delete it. Note that it is assumed
119 * that any locking on system level ifn/ifa is done at the
120 * caller of these functions and these routines will only
121 * lock the SCTP structures as they add or delete things.
123 * Other notes on VRF concepts.
124 * - An endpoint can be in multiple VRF's
125 * - An association lives within a VRF and only one VRF.
126 * - Any incoming packet we can deduce the VRF for by
127 * looking at the mbuf/pak inbound (for BSD its VRF=0 :D)
128 * - Any downward send call or connect call must supply the
129 * VRF via ancillary data or via some sort of set default
130 * VRF socket option call (again for BSD no brainer since
131 * the VRF is always 0).
132 * - An endpoint may add multiple VRF's to it.
133 * - Listening sockets can accept associations in any
134 * of the VRF's they are in but the assoc will end up
135 * in only one VRF (gotten from the packet or connect/send).
140 sctp_allocate_vrf(int vrf_id)
142 struct sctp_vrf *vrf = NULL;
143 struct sctp_vrflist *bucket;
145 /* First allocate the VRF structure */
146 vrf = sctp_find_vrf(vrf_id);
148 /* Already allocated */
151 SCTP_MALLOC(vrf, struct sctp_vrf *, sizeof(struct sctp_vrf),
156 panic("No memory for VRF:%d", vrf_id);
161 memset(vrf, 0, sizeof(struct sctp_vrf));
162 vrf->vrf_id = vrf_id;
163 LIST_INIT(&vrf->ifnlist);
164 vrf->total_ifa_count = 0;
166 /* now also setup table ids */
167 SCTP_INIT_VRF_TABLEID(vrf);
168 /* Init the HASH of addresses */
169 vrf->vrf_addr_hash = SCTP_HASH_INIT(SCTP_VRF_ADDR_HASH_SIZE,
170 &vrf->vrf_addr_hashmark);
171 if (vrf->vrf_addr_hash == NULL) {
174 panic("No memory for VRF:%d", vrf_id);
176 SCTP_FREE(vrf, SCTP_M_VRF);
179 /* Add it to the hash table */
180 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
181 LIST_INSERT_HEAD(bucket, vrf, next_vrf);
182 atomic_add_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
188 sctp_find_ifn(void *ifn, uint32_t ifn_index)
190 struct sctp_ifn *sctp_ifnp;
191 struct sctp_ifnlist *hash_ifn_head;
194 * We assume the lock is held for the addresses if thats wrong
195 * problems could occur :-)
197 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
198 LIST_FOREACH(sctp_ifnp, hash_ifn_head, next_bucket) {
199 if (sctp_ifnp->ifn_index == ifn_index) {
202 if (sctp_ifnp->ifn_p && ifn && (sctp_ifnp->ifn_p == ifn)) {
212 sctp_find_vrf(uint32_t vrf_id)
214 struct sctp_vrflist *bucket;
215 struct sctp_vrf *liste;
217 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
218 LIST_FOREACH(liste, bucket, next_vrf) {
219 if (vrf_id == liste->vrf_id) {
227 sctp_free_vrf(struct sctp_vrf *vrf)
229 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&vrf->refcount)) {
230 if (vrf->vrf_addr_hash) {
231 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
232 vrf->vrf_addr_hash = NULL;
234 /* We zero'd the count */
235 LIST_REMOVE(vrf, next_vrf);
236 SCTP_FREE(vrf, SCTP_M_VRF);
237 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
242 sctp_free_ifn(struct sctp_ifn *sctp_ifnp)
244 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifnp->refcount)) {
245 /* We zero'd the count */
246 if (sctp_ifnp->vrf) {
247 sctp_free_vrf(sctp_ifnp->vrf);
249 SCTP_FREE(sctp_ifnp, SCTP_M_IFN);
250 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
255 sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu)
257 struct sctp_ifn *sctp_ifnp;
259 sctp_ifnp = sctp_find_ifn((void *)NULL, ifn_index);
260 if (sctp_ifnp != NULL) {
261 sctp_ifnp->ifn_mtu = mtu;
267 sctp_free_ifa(struct sctp_ifa *sctp_ifap)
269 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifap->refcount)) {
270 /* We zero'd the count */
271 if (sctp_ifap->ifn_p) {
272 sctp_free_ifn(sctp_ifap->ifn_p);
274 SCTP_FREE(sctp_ifap, SCTP_M_IFA);
275 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
280 sctp_delete_ifn(struct sctp_ifn *sctp_ifnp, int hold_addr_lock)
282 struct sctp_ifn *found;
284 found = sctp_find_ifn(sctp_ifnp->ifn_p, sctp_ifnp->ifn_index);
286 /* Not in the list.. sorry */
289 if (hold_addr_lock == 0)
290 SCTP_IPI_ADDR_WLOCK();
291 LIST_REMOVE(sctp_ifnp, next_bucket);
292 LIST_REMOVE(sctp_ifnp, next_ifn);
293 SCTP_DEREGISTER_INTERFACE(sctp_ifnp->ifn_index,
294 sctp_ifnp->registered_af);
295 if (hold_addr_lock == 0)
296 SCTP_IPI_ADDR_WUNLOCK();
297 /* Take away the reference, and possibly free it */
298 sctp_free_ifn(sctp_ifnp);
302 sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr,
303 const char *if_name, uint32_t ifn_index)
305 struct sctp_vrf *vrf;
306 struct sctp_ifa *sctp_ifap = NULL;
308 SCTP_IPI_ADDR_RLOCK();
309 vrf = sctp_find_vrf(vrf_id);
311 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
315 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
316 if (sctp_ifap == NULL) {
317 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
320 if (sctp_ifap->ifn_p == NULL) {
321 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unuseable\n");
327 len1 = strlen(if_name);
328 len2 = strlen(sctp_ifap->ifn_p->ifn_name);
330 SCTPDBG(SCTP_DEBUG_PCB4, "IFN of ifa names different lenght %d vs %d - ignored\n",
334 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, len1) != 0) {
335 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
336 sctp_ifap->ifn_p->ifn_name,
341 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
342 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
343 sctp_ifap->ifn_p->ifn_index, ifn_index);
348 sctp_ifap->localifa_flags &= (~SCTP_ADDR_VALID);
349 sctp_ifap->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE;
351 SCTP_IPI_ADDR_RUNLOCK();
355 sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr,
356 const char *if_name, uint32_t ifn_index)
358 struct sctp_vrf *vrf;
359 struct sctp_ifa *sctp_ifap = NULL;
361 SCTP_IPI_ADDR_RLOCK();
362 vrf = sctp_find_vrf(vrf_id);
364 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
368 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
369 if (sctp_ifap == NULL) {
370 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
373 if (sctp_ifap->ifn_p == NULL) {
374 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unuseable\n");
380 len1 = strlen(if_name);
381 len2 = strlen(sctp_ifap->ifn_p->ifn_name);
383 SCTPDBG(SCTP_DEBUG_PCB4, "IFN of ifa names different lenght %d vs %d - ignored\n",
387 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, len1) != 0) {
388 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
389 sctp_ifap->ifn_p->ifn_name,
394 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
395 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
396 sctp_ifap->ifn_p->ifn_index, ifn_index);
401 sctp_ifap->localifa_flags &= (~SCTP_ADDR_IFA_UNUSEABLE);
402 sctp_ifap->localifa_flags |= SCTP_ADDR_VALID;
404 SCTP_IPI_ADDR_RUNLOCK();
408 * Add an ifa to an ifn.
409 * Register the interface as necessary.
410 * NOTE: ADDR write lock MUST be held.
413 sctp_add_ifa_to_ifn(struct sctp_ifn *sctp_ifnp, struct sctp_ifa *sctp_ifap)
417 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
418 sctp_ifap->ifn_p = sctp_ifnp;
419 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
420 /* update address counts */
421 sctp_ifnp->ifa_count++;
422 ifa_af = sctp_ifap->address.sa.sa_family;
423 if (ifa_af == AF_INET)
427 if (sctp_ifnp->ifa_count == 1) {
428 /* register the new interface */
429 SCTP_REGISTER_INTERFACE(sctp_ifnp->ifn_index, ifa_af);
430 sctp_ifnp->registered_af = ifa_af;
435 * Remove an ifa from its ifn.
436 * If no more addresses exist, remove the ifn too. Otherwise, re-register
437 * the interface based on the remaining address families left.
438 * NOTE: ADDR write lock MUST be held.
441 sctp_remove_ifa_from_ifn(struct sctp_ifa *sctp_ifap)
445 LIST_REMOVE(sctp_ifap, next_ifa);
446 if (sctp_ifap->ifn_p) {
447 /* update address counts */
448 sctp_ifap->ifn_p->ifa_count--;
449 if (sctp_ifap->address.sa.sa_family == AF_INET6)
450 sctp_ifap->ifn_p->num_v6--;
451 else if (sctp_ifap->address.sa.sa_family == AF_INET)
452 sctp_ifap->ifn_p->num_v4--;
454 ifn_index = sctp_ifap->ifn_p->ifn_index;
455 if (LIST_EMPTY(&sctp_ifap->ifn_p->ifalist)) {
456 /* remove the ifn, possibly freeing it */
457 sctp_delete_ifn(sctp_ifap->ifn_p, SCTP_ADDR_LOCKED);
459 /* re-register address family type, if needed */
460 if ((sctp_ifap->ifn_p->num_v6 == 0) &&
461 (sctp_ifap->ifn_p->registered_af == AF_INET6)) {
462 SCTP_DEREGISTER_INTERFACE(ifn_index, AF_INET6);
463 SCTP_REGISTER_INTERFACE(ifn_index, AF_INET);
464 sctp_ifap->ifn_p->registered_af = AF_INET;
465 } else if ((sctp_ifap->ifn_p->num_v4 == 0) &&
466 (sctp_ifap->ifn_p->registered_af == AF_INET)) {
467 SCTP_DEREGISTER_INTERFACE(ifn_index, AF_INET);
468 SCTP_REGISTER_INTERFACE(ifn_index, AF_INET6);
469 sctp_ifap->ifn_p->registered_af = AF_INET6;
471 /* free the ifn refcount */
472 sctp_free_ifn(sctp_ifap->ifn_p);
474 sctp_ifap->ifn_p = NULL;
479 sctp_add_addr_to_vrf(uint32_t vrf_id, void *ifn, uint32_t ifn_index,
480 uint32_t ifn_type, const char *if_name, void *ifa,
481 struct sockaddr *addr, uint32_t ifa_flags,
484 struct sctp_vrf *vrf;
485 struct sctp_ifn *sctp_ifnp = NULL;
486 struct sctp_ifa *sctp_ifap = NULL;
487 struct sctp_ifalist *hash_addr_head;
488 struct sctp_ifnlist *hash_ifn_head;
489 uint32_t hash_of_addr;
493 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: adding address: ", vrf_id);
494 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
496 SCTP_IPI_ADDR_WLOCK();
497 sctp_ifnp = sctp_find_ifn(ifn, ifn_index);
499 vrf = sctp_ifnp->vrf;
501 vrf = sctp_find_vrf(vrf_id);
503 vrf = sctp_allocate_vrf(vrf_id);
505 SCTP_IPI_ADDR_WUNLOCK();
510 if (sctp_ifnp == NULL) {
512 * build one and add it, can't hold lock until after malloc
515 SCTP_IPI_ADDR_WUNLOCK();
516 SCTP_MALLOC(sctp_ifnp, struct sctp_ifn *,
517 sizeof(struct sctp_ifn), SCTP_M_IFN);
518 if (sctp_ifnp == NULL) {
520 panic("No memory for IFN:%u", sctp_ifnp->ifn_index);
524 memset(sctp_ifnp, 0, sizeof(struct sctp_ifn));
525 sctp_ifnp->ifn_index = ifn_index;
526 sctp_ifnp->ifn_p = ifn;
527 sctp_ifnp->ifn_type = ifn_type;
528 sctp_ifnp->refcount = 0;
529 sctp_ifnp->vrf = vrf;
530 atomic_add_int(&vrf->refcount, 1);
531 sctp_ifnp->ifn_mtu = SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, addr->sa_family);
532 if (if_name != NULL) {
533 memcpy(sctp_ifnp->ifn_name, if_name, SCTP_IFNAMSIZ);
535 memcpy(sctp_ifnp->ifn_name, "unknown", min(7, SCTP_IFNAMSIZ));
537 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
538 LIST_INIT(&sctp_ifnp->ifalist);
539 SCTP_IPI_ADDR_WLOCK();
540 LIST_INSERT_HEAD(hash_ifn_head, sctp_ifnp, next_bucket);
541 LIST_INSERT_HEAD(&vrf->ifnlist, sctp_ifnp, next_ifn);
542 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
545 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
547 /* Hmm, it already exists? */
548 if ((sctp_ifap->ifn_p) &&
549 (sctp_ifap->ifn_p->ifn_index == ifn_index)) {
550 SCTPDBG(SCTP_DEBUG_PCB4, "Using existing ifn %s (0x%x) for ifa %p\n",
551 sctp_ifap->ifn_p->ifn_name, ifn_index,
554 /* Remove the created one that we don't want */
555 sctp_delete_ifn(sctp_ifnp, SCTP_ADDR_LOCKED);
557 if (sctp_ifap->localifa_flags & SCTP_BEING_DELETED) {
558 /* easy to solve, just switch back to active */
559 SCTPDBG(SCTP_DEBUG_PCB4, "Clearing deleted ifa flag\n");
560 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
561 sctp_ifap->ifn_p = sctp_ifnp;
562 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
565 SCTP_IPI_ADDR_WUNLOCK();
568 if (sctp_ifap->ifn_p) {
570 * The last IFN gets the address, removee
573 SCTPDBG(SCTP_DEBUG_PCB4, "Moving ifa %p from %s (0x%x) to %s (0x%x)\n",
574 sctp_ifap, sctp_ifap->ifn_p->ifn_name,
575 sctp_ifap->ifn_p->ifn_index, if_name,
577 /* remove the address from the old ifn */
578 sctp_remove_ifa_from_ifn(sctp_ifap);
579 /* move the address over to the new ifn */
580 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
581 goto exit_stage_left;
583 /* repair ifnp which was NULL ? */
584 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
585 SCTPDBG(SCTP_DEBUG_PCB4, "Repairing ifn %p for ifa %p\n",
586 sctp_ifnp, sctp_ifap);
587 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
589 goto exit_stage_left;
592 SCTP_IPI_ADDR_WUNLOCK();
593 SCTP_MALLOC(sctp_ifap, struct sctp_ifa *, sizeof(struct sctp_ifa), SCTP_M_IFA);
594 if (sctp_ifap == NULL) {
596 panic("No memory for IFA");
600 memset(sctp_ifap, 0, sizeof(struct sctp_ifa));
601 sctp_ifap->ifn_p = sctp_ifnp;
602 atomic_add_int(&sctp_ifnp->refcount, 1);
603 sctp_ifap->vrf_id = vrf_id;
604 sctp_ifap->ifa = ifa;
605 memcpy(&sctp_ifap->address, addr, addr->sa_len);
606 sctp_ifap->localifa_flags = SCTP_ADDR_VALID | SCTP_ADDR_DEFER_USE;
607 sctp_ifap->flags = ifa_flags;
609 switch (sctp_ifap->address.sa.sa_family) {
612 struct sockaddr_in *sin;
614 sin = (struct sockaddr_in *)&sctp_ifap->address.sin;
615 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
616 (IN4_ISLOOPBACK_ADDRESS(&sin->sin_addr))) {
617 sctp_ifap->src_is_loop = 1;
619 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
620 sctp_ifap->src_is_priv = 1;
624 new_ifn_af = AF_INET;
630 /* ok to use deprecated addresses? */
631 struct sockaddr_in6 *sin6;
633 sin6 = (struct sockaddr_in6 *)&sctp_ifap->address.sin6;
634 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
635 (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))) {
636 sctp_ifap->src_is_loop = 1;
638 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
639 sctp_ifap->src_is_priv = 1;
643 new_ifn_af = AF_INET6;
651 hash_of_addr = sctp_get_ifa_hash_val(&sctp_ifap->address.sa);
653 if ((sctp_ifap->src_is_priv == 0) &&
654 (sctp_ifap->src_is_loop == 0)) {
655 sctp_ifap->src_is_glob = 1;
657 SCTP_IPI_ADDR_WLOCK();
658 hash_addr_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
659 LIST_INSERT_HEAD(hash_addr_head, sctp_ifap, next_bucket);
660 sctp_ifap->refcount = 1;
661 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
662 sctp_ifnp->ifa_count++;
663 vrf->total_ifa_count++;
664 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
666 SCTP_REGISTER_INTERFACE(ifn_index, new_ifn_af);
667 sctp_ifnp->registered_af = new_ifn_af;
669 SCTP_IPI_ADDR_WUNLOCK();
672 * Bump up the refcount so that when the timer completes it
673 * will drop back down.
675 struct sctp_laddr *wi;
677 atomic_add_int(&sctp_ifap->refcount, 1);
678 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
681 * Gak, what can we do? We have lost an address
682 * change can you say HOSED?
684 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
685 /* Opps, must decrement the count */
686 sctp_del_addr_from_vrf(vrf_id, addr, ifn_index,
690 SCTP_INCR_LADDR_COUNT();
691 bzero(wi, sizeof(*wi));
692 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
694 wi->action = SCTP_ADD_IP_ADDRESS;
695 SCTP_IPI_ITERATOR_WQ_LOCK();
697 * Should this really be a tailq? As it is we will process
698 * the newest first :-0
700 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
701 SCTP_IPI_ITERATOR_WQ_UNLOCK();
702 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
703 (struct sctp_inpcb *)NULL,
704 (struct sctp_tcb *)NULL,
705 (struct sctp_nets *)NULL);
707 /* it's ready for use */
708 sctp_ifap->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
714 sctp_del_addr_from_vrf(uint32_t vrf_id, struct sockaddr *addr,
715 uint32_t ifn_index, const char *if_name)
717 struct sctp_vrf *vrf;
718 struct sctp_ifa *sctp_ifap = NULL;
720 SCTP_IPI_ADDR_WLOCK();
721 vrf = sctp_find_vrf(vrf_id);
723 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
727 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: deleting address:", vrf_id);
728 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
730 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
732 /* Validate the delete */
733 if (sctp_ifap->ifn_p) {
737 * The name has priority over the ifn_index
738 * if its given. We do this especially for
739 * panda who might recycle indexes fast.
744 len1 = min(SCTP_IFNAMSIZ, strlen(if_name));
745 len2 = min(SCTP_IFNAMSIZ, strlen(sctp_ifap->ifn_p->ifn_name));
746 if (len1 && len2 && (len1 == len2)) {
747 /* we can compare them */
748 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, len1) == 0) {
750 * They match its a correct
758 /* last ditch check ifn_index */
759 if (ifn_index == sctp_ifap->ifn_p->ifn_index) {
764 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s does not match addresses\n",
765 ifn_index, ((if_name == NULL) ? "NULL" : if_name));
766 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s - ignoring delete\n",
767 sctp_ifap->ifn_p->ifn_index, sctp_ifap->ifn_p->ifn_name);
768 SCTP_IPI_ADDR_WUNLOCK();
772 SCTPDBG(SCTP_DEBUG_PCB4, "Deleting ifa %p\n", sctp_ifap);
773 sctp_ifap->localifa_flags &= SCTP_ADDR_VALID;
774 sctp_ifap->localifa_flags |= SCTP_BEING_DELETED;
775 vrf->total_ifa_count--;
776 LIST_REMOVE(sctp_ifap, next_bucket);
777 sctp_remove_ifa_from_ifn(sctp_ifap);
781 SCTPDBG(SCTP_DEBUG_PCB4, "Del Addr-ifn:%d Could not find address:",
783 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
788 SCTP_IPI_ADDR_WUNLOCK();
790 struct sctp_laddr *wi;
792 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
795 * Gak, what can we do? We have lost an address
796 * change can you say HOSED?
798 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
800 /* Oops, must decrement the count */
801 sctp_free_ifa(sctp_ifap);
804 SCTP_INCR_LADDR_COUNT();
805 bzero(wi, sizeof(*wi));
806 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
808 wi->action = SCTP_DEL_IP_ADDRESS;
809 SCTP_IPI_ITERATOR_WQ_LOCK();
811 * Should this really be a tailq? As it is we will process
812 * the newest first :-0
814 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
815 SCTP_IPI_ITERATOR_WQ_UNLOCK();
817 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
818 (struct sctp_inpcb *)NULL,
819 (struct sctp_tcb *)NULL,
820 (struct sctp_nets *)NULL);
826 static struct sctp_tcb *
827 sctp_tcb_special_locate(struct sctp_inpcb **inp_p, struct sockaddr *from,
828 struct sockaddr *to, struct sctp_nets **netp, uint32_t vrf_id)
830 /**** ASSUMES THE CALLER holds the INP_INFO_RLOCK */
832 * If we support the TCP model, then we must now dig through to see
833 * if we can find our endpoint in the list of tcp ep's.
835 uint16_t lport, rport;
836 struct sctppcbhead *ephead;
837 struct sctp_inpcb *inp;
838 struct sctp_laddr *laddr;
839 struct sctp_tcb *stcb;
840 struct sctp_nets *net;
842 if ((to == NULL) || (from == NULL)) {
845 if (to->sa_family == AF_INET && from->sa_family == AF_INET) {
846 lport = ((struct sockaddr_in *)to)->sin_port;
847 rport = ((struct sockaddr_in *)from)->sin_port;
848 } else if (to->sa_family == AF_INET6 && from->sa_family == AF_INET6) {
849 lport = ((struct sockaddr_in6 *)to)->sin6_port;
850 rport = ((struct sockaddr_in6 *)from)->sin6_port;
854 ephead = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport), SCTP_BASE_INFO(hashtcpmark))];
856 * Ok now for each of the guys in this bucket we must look and see:
857 * - Does the remote port match. - Does there single association's
858 * addresses match this address (to). If so we update p_ep to point
859 * to this ep and return the tcb from it.
861 LIST_FOREACH(inp, ephead, sctp_hash) {
863 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
864 SCTP_INP_RUNLOCK(inp);
867 if (lport != inp->sctp_lport) {
868 SCTP_INP_RUNLOCK(inp);
871 if (inp->def_vrf_id != vrf_id) {
872 SCTP_INP_RUNLOCK(inp);
875 /* check to see if the ep has one of the addresses */
876 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
877 /* We are NOT bound all, so look further */
880 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
882 if (laddr->ifa == NULL) {
883 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n", __FUNCTION__);
886 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
887 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
890 if (laddr->ifa->address.sa.sa_family ==
892 /* see if it matches */
893 struct sockaddr_in *intf_addr, *sin;
895 intf_addr = &laddr->ifa->address.sin;
896 sin = (struct sockaddr_in *)to;
897 if (from->sa_family == AF_INET) {
898 if (sin->sin_addr.s_addr ==
899 intf_addr->sin_addr.s_addr) {
905 if (from->sa_family == AF_INET6) {
906 struct sockaddr_in6 *intf_addr6;
907 struct sockaddr_in6 *sin6;
909 sin6 = (struct sockaddr_in6 *)
911 intf_addr6 = &laddr->ifa->address.sin6;
913 if (SCTP6_ARE_ADDR_EQUAL(sin6,
923 /* This endpoint does not have this address */
924 SCTP_INP_RUNLOCK(inp);
929 * Ok if we hit here the ep has the address, does it hold
933 stcb = LIST_FIRST(&inp->sctp_asoc_list);
935 SCTP_INP_RUNLOCK(inp);
939 if (stcb->rport != rport) {
940 /* remote port does not match. */
941 SCTP_TCB_UNLOCK(stcb);
942 SCTP_INP_RUNLOCK(inp);
945 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
946 SCTP_TCB_UNLOCK(stcb);
947 SCTP_INP_RUNLOCK(inp);
950 /* Does this TCB have a matching address? */
951 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
953 if (net->ro._l_addr.sa.sa_family != from->sa_family) {
954 /* not the same family, can't be a match */
957 switch (from->sa_family) {
960 struct sockaddr_in *sin, *rsin;
962 sin = (struct sockaddr_in *)&net->ro._l_addr;
963 rsin = (struct sockaddr_in *)from;
964 if (sin->sin_addr.s_addr ==
965 rsin->sin_addr.s_addr) {
971 * Update the endpoint
975 SCTP_INP_RUNLOCK(inp);
983 struct sockaddr_in6 *sin6, *rsin6;
985 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
986 rsin6 = (struct sockaddr_in6 *)from;
987 if (SCTP6_ARE_ADDR_EQUAL(sin6,
994 * Update the endpoint
998 SCTP_INP_RUNLOCK(inp);
1009 SCTP_TCB_UNLOCK(stcb);
1010 SCTP_INP_RUNLOCK(inp);
1018 * 1) If I return a NULL you must decrement any INP ref cnt. 2) If I find an
1019 * stcb, both will be locked (locked_tcb and stcb) but decrement will be done
1020 * (if locked == NULL). 3) Decrement happens on return ONLY if locked ==
1025 sctp_findassociation_ep_addr(struct sctp_inpcb **inp_p, struct sockaddr *remote,
1026 struct sctp_nets **netp, struct sockaddr *local, struct sctp_tcb *locked_tcb)
1028 struct sctpasochead *head;
1029 struct sctp_inpcb *inp;
1030 struct sctp_tcb *stcb = NULL;
1031 struct sctp_nets *net;
1035 if (remote->sa_family == AF_INET) {
1036 rport = (((struct sockaddr_in *)remote)->sin_port);
1037 } else if (remote->sa_family == AF_INET6) {
1038 rport = (((struct sockaddr_in6 *)remote)->sin6_port);
1044 * UN-lock so we can do proper locking here this occurs when
1045 * called from load_addresses_from_init.
1047 atomic_add_int(&locked_tcb->asoc.refcnt, 1);
1048 SCTP_TCB_UNLOCK(locked_tcb);
1050 SCTP_INP_INFO_RLOCK();
1051 if (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
1053 * Now either this guy is our listener or it's the
1054 * connector. If it is the one that issued the connect, then
1055 * it's only chance is to be the first TCB in the list. If
1056 * it is the acceptor, then do the special_lookup to hash
1057 * and find the real inp.
1059 if ((inp->sctp_socket) && (inp->sctp_socket->so_qlimit)) {
1060 /* to is peer addr, from is my addr */
1061 stcb = sctp_tcb_special_locate(inp_p, remote, local,
1062 netp, inp->def_vrf_id);
1063 if ((stcb != NULL) && (locked_tcb == NULL)) {
1064 /* we have a locked tcb, lower refcount */
1065 SCTP_INP_DECR_REF(inp);
1067 if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
1068 SCTP_INP_RLOCK(locked_tcb->sctp_ep);
1069 SCTP_TCB_LOCK(locked_tcb);
1070 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1071 SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
1073 SCTP_INP_INFO_RUNLOCK();
1076 SCTP_INP_WLOCK(inp);
1077 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1080 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1084 SCTP_TCB_LOCK(stcb);
1086 if (stcb->rport != rport) {
1087 /* remote port does not match. */
1088 SCTP_TCB_UNLOCK(stcb);
1091 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1092 SCTP_TCB_UNLOCK(stcb);
1095 /* now look at the list of remote addresses */
1096 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1098 if (net == (TAILQ_NEXT(net, sctp_next))) {
1099 panic("Corrupt net list");
1102 if (net->ro._l_addr.sa.sa_family !=
1103 remote->sa_family) {
1104 /* not the same family */
1107 switch (remote->sa_family) {
1110 struct sockaddr_in *sin,
1113 sin = (struct sockaddr_in *)
1115 rsin = (struct sockaddr_in *)remote;
1116 if (sin->sin_addr.s_addr ==
1117 rsin->sin_addr.s_addr) {
1122 if (locked_tcb == NULL) {
1123 SCTP_INP_DECR_REF(inp);
1124 } else if (locked_tcb != stcb) {
1125 SCTP_TCB_LOCK(locked_tcb);
1128 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1130 SCTP_INP_WUNLOCK(inp);
1131 SCTP_INP_INFO_RUNLOCK();
1139 struct sockaddr_in6 *sin6,
1142 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1143 rsin6 = (struct sockaddr_in6 *)remote;
1144 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1150 if (locked_tcb == NULL) {
1151 SCTP_INP_DECR_REF(inp);
1152 } else if (locked_tcb != stcb) {
1153 SCTP_TCB_LOCK(locked_tcb);
1156 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1158 SCTP_INP_WUNLOCK(inp);
1159 SCTP_INP_INFO_RUNLOCK();
1170 SCTP_TCB_UNLOCK(stcb);
1173 SCTP_INP_WLOCK(inp);
1174 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1177 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport,
1178 inp->sctp_hashmark)];
1182 LIST_FOREACH(stcb, head, sctp_tcbhash) {
1183 if (stcb->rport != rport) {
1184 /* remote port does not match */
1187 SCTP_TCB_LOCK(stcb);
1188 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1189 SCTP_TCB_UNLOCK(stcb);
1192 /* now look at the list of remote addresses */
1193 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1195 if (net == (TAILQ_NEXT(net, sctp_next))) {
1196 panic("Corrupt net list");
1199 if (net->ro._l_addr.sa.sa_family !=
1200 remote->sa_family) {
1201 /* not the same family */
1204 switch (remote->sa_family) {
1207 struct sockaddr_in *sin,
1210 sin = (struct sockaddr_in *)
1212 rsin = (struct sockaddr_in *)remote;
1213 if (sin->sin_addr.s_addr ==
1214 rsin->sin_addr.s_addr) {
1219 if (locked_tcb == NULL) {
1220 SCTP_INP_DECR_REF(inp);
1221 } else if (locked_tcb != stcb) {
1222 SCTP_TCB_LOCK(locked_tcb);
1225 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1227 SCTP_INP_WUNLOCK(inp);
1228 SCTP_INP_INFO_RUNLOCK();
1236 struct sockaddr_in6 *sin6,
1239 sin6 = (struct sockaddr_in6 *)
1241 rsin6 = (struct sockaddr_in6 *)remote;
1242 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1248 if (locked_tcb == NULL) {
1249 SCTP_INP_DECR_REF(inp);
1250 } else if (locked_tcb != stcb) {
1251 SCTP_TCB_LOCK(locked_tcb);
1254 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1256 SCTP_INP_WUNLOCK(inp);
1257 SCTP_INP_INFO_RUNLOCK();
1268 SCTP_TCB_UNLOCK(stcb);
1272 /* clean up for returning null */
1274 SCTP_TCB_LOCK(locked_tcb);
1275 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1277 SCTP_INP_WUNLOCK(inp);
1278 SCTP_INP_INFO_RUNLOCK();
1284 * Find an association for a specific endpoint using the association id given
1285 * out in the COMM_UP notification
1289 sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1292 * Use my the assoc_id to find a endpoint
1294 struct sctpasochead *head;
1295 struct sctp_tcb *stcb;
1299 SCTP_PRINTF("TSNH ep_associd\n");
1302 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1303 SCTP_PRINTF("TSNH ep_associd0\n");
1306 id = (uint32_t) asoc_id;
1307 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
1309 /* invalid id TSNH */
1310 SCTP_PRINTF("TSNH ep_associd1\n");
1313 LIST_FOREACH(stcb, head, sctp_tcbasocidhash) {
1314 if (stcb->asoc.assoc_id == id) {
1315 if (inp != stcb->sctp_ep) {
1317 * some other guy has the same id active (id
1320 SCTP_PRINTF("TSNH ep_associd2\n");
1323 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1327 SCTP_TCB_LOCK(stcb);
1337 sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1339 struct sctp_tcb *stcb;
1341 SCTP_INP_RLOCK(inp);
1342 stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
1343 SCTP_INP_RUNLOCK(inp);
1348 static struct sctp_inpcb *
1349 sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head,
1350 uint16_t lport, uint32_t vrf_id)
1352 struct sctp_inpcb *inp;
1353 struct sockaddr_in *sin;
1356 struct sockaddr_in6 *sin6;
1359 struct sctp_laddr *laddr;
1362 struct sockaddr_in6 *intf_addr6;
1369 * Endpoing probe expects that the INP_INFO is locked.
1375 switch (nam->sa_family) {
1377 sin = (struct sockaddr_in *)nam;
1381 sin6 = (struct sockaddr_in6 *)nam;
1385 /* unsupported family */
1392 LIST_FOREACH(inp, head, sctp_hash) {
1393 SCTP_INP_RLOCK(inp);
1394 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1395 SCTP_INP_RUNLOCK(inp);
1398 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) &&
1399 (inp->sctp_lport == lport)) {
1401 if ((nam->sa_family == AF_INET) &&
1402 (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1403 SCTP_IPV6_V6ONLY(inp)) {
1404 /* IPv4 on a IPv6 socket with ONLY IPv6 set */
1405 SCTP_INP_RUNLOCK(inp);
1408 /* A V6 address and the endpoint is NOT bound V6 */
1409 if (nam->sa_family == AF_INET6 &&
1410 (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
1411 SCTP_INP_RUNLOCK(inp);
1414 /* does a VRF id match? */
1416 if (inp->def_vrf_id == vrf_id)
1419 SCTP_INP_RUNLOCK(inp);
1424 SCTP_INP_RUNLOCK(inp);
1426 if ((nam->sa_family == AF_INET) &&
1427 (sin->sin_addr.s_addr == INADDR_ANY)) {
1428 /* Can't hunt for one that has no address specified */
1432 if ((nam->sa_family == AF_INET6) &&
1433 (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))) {
1434 /* Can't hunt for one that has no address specified */
1439 * ok, not bound to all so see if we can find a EP bound to this
1442 LIST_FOREACH(inp, head, sctp_hash) {
1443 SCTP_INP_RLOCK(inp);
1444 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1445 SCTP_INP_RUNLOCK(inp);
1448 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
1449 SCTP_INP_RUNLOCK(inp);
1453 * Ok this could be a likely candidate, look at all of its
1456 if (inp->sctp_lport != lport) {
1457 SCTP_INP_RUNLOCK(inp);
1460 /* does a VRF id match? */
1462 if (inp->def_vrf_id == vrf_id)
1466 SCTP_INP_RUNLOCK(inp);
1469 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1470 if (laddr->ifa == NULL) {
1471 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
1475 SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ",
1477 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1478 SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n");
1481 if (laddr->ifa->address.sa.sa_family == nam->sa_family) {
1482 /* possible, see if it matches */
1483 struct sockaddr_in *intf_addr;
1485 intf_addr = &laddr->ifa->address.sin;
1486 switch (nam->sa_family) {
1488 if (sin->sin_addr.s_addr ==
1489 intf_addr->sin_addr.s_addr) {
1490 SCTP_INP_RUNLOCK(inp);
1496 intf_addr6 = &laddr->ifa->address.sin6;
1497 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1499 SCTP_INP_RUNLOCK(inp);
1507 SCTP_INP_RUNLOCK(inp);
1513 static struct sctp_inpcb *
1514 sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
1516 struct sctppcbhead *head;
1517 struct sctp_inpcb *t_inp;
1520 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1521 SCTP_BASE_INFO(hashmark))];
1522 LIST_FOREACH(t_inp, head, sctp_hash) {
1523 if (t_inp->sctp_lport != lport) {
1526 /* is it in the VRF in question */
1528 if (t_inp->def_vrf_id == vrf_id)
1533 /* This one is in use. */
1534 /* check the v6/v4 binding issue */
1535 if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1536 SCTP_IPV6_V6ONLY(t_inp)) {
1537 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1538 /* collision in V6 space */
1541 /* inp is BOUND_V4 no conflict */
1544 } else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1545 /* t_inp is bound v4 and v6, conflict always */
1548 /* t_inp is bound only V4 */
1549 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1550 SCTP_IPV6_V6ONLY(inp)) {
1554 /* else fall through to conflict */
1563 sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
1565 /* For 1-2-1 with port reuse */
1566 struct sctppcbhead *head;
1567 struct sctp_inpcb *tinp;
1569 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
1570 /* only works with port reuse on */
1573 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) {
1576 SCTP_INP_RUNLOCK(inp);
1577 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport,
1578 SCTP_BASE_INFO(hashmark))];
1579 /* Kick out all non-listeners to the TCP hash */
1580 LIST_FOREACH(tinp, head, sctp_hash) {
1581 if (tinp->sctp_lport != inp->sctp_lport) {
1584 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1587 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
1590 if (tinp->sctp_socket->so_qlimit) {
1593 SCTP_INP_WLOCK(tinp);
1594 LIST_REMOVE(tinp, sctp_hash);
1595 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))];
1596 tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
1597 LIST_INSERT_HEAD(head, tinp, sctp_hash);
1598 SCTP_INP_WUNLOCK(tinp);
1600 SCTP_INP_WLOCK(inp);
1601 /* Pull from where he was */
1602 LIST_REMOVE(inp, sctp_hash);
1603 inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL;
1604 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))];
1605 LIST_INSERT_HEAD(head, inp, sctp_hash);
1606 SCTP_INP_WUNLOCK(inp);
1607 SCTP_INP_RLOCK(inp);
1613 sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock,
1617 * First we check the hash table to see if someone has this port
1618 * bound with just the port.
1620 struct sctp_inpcb *inp;
1621 struct sctppcbhead *head;
1622 struct sockaddr_in *sin;
1623 struct sockaddr_in6 *sin6;
1626 if (nam->sa_family == AF_INET) {
1627 sin = (struct sockaddr_in *)nam;
1628 lport = ((struct sockaddr_in *)nam)->sin_port;
1629 } else if (nam->sa_family == AF_INET6) {
1630 sin6 = (struct sockaddr_in6 *)nam;
1631 lport = ((struct sockaddr_in6 *)nam)->sin6_port;
1633 /* unsupported family */
1637 * I could cheat here and just cast to one of the types but we will
1638 * do it right. It also provides the check against an Unsupported
1641 /* Find the head of the ALLADDR chain */
1642 if (have_lock == 0) {
1643 SCTP_INP_INFO_RLOCK();
1645 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1646 SCTP_BASE_INFO(hashmark))];
1647 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1650 * If the TCP model exists it could be that the main listening
1651 * endpoint is gone but there exists a connected socket for this guy
1652 * yet. If so we can return the first one that we find. This may NOT
1653 * be the correct one so the caller should be wary on the return
1654 * INP. Currently the onlyc caller that sets this flag is in bindx
1655 * where we are verifying that a user CAN bind the address. He
1656 * either has bound it already, or someone else has, or its open to
1657 * bind, so this is good enough.
1659 if (inp == NULL && find_tcp_pool) {
1660 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))];
1661 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1664 SCTP_INP_INCR_REF(inp);
1666 if (have_lock == 0) {
1667 SCTP_INP_INFO_RUNLOCK();
1673 * Find an association for an endpoint with the pointer to whom you want to
1674 * send to and the endpoint pointer. The address can be IPv4 or IPv6. We may
1675 * need to change the *to to some other struct like a mbuf...
1678 sctp_findassociation_addr_sa(struct sockaddr *to, struct sockaddr *from,
1679 struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool,
1682 struct sctp_inpcb *inp = NULL;
1683 struct sctp_tcb *retval;
1685 SCTP_INP_INFO_RLOCK();
1686 if (find_tcp_pool) {
1687 if (inp_p != NULL) {
1688 retval = sctp_tcb_special_locate(inp_p, from, to, netp,
1691 retval = sctp_tcb_special_locate(&inp, from, to, netp,
1694 if (retval != NULL) {
1695 SCTP_INP_INFO_RUNLOCK();
1699 inp = sctp_pcb_findep(to, 0, 1, vrf_id);
1700 if (inp_p != NULL) {
1703 SCTP_INP_INFO_RUNLOCK();
1709 * ok, we have an endpoint, now lets find the assoc for it (if any)
1710 * we now place the source address or from in the to of the find
1711 * endpoint call. Since in reality this chain is used from the
1712 * inbound packet side.
1714 if (inp_p != NULL) {
1715 retval = sctp_findassociation_ep_addr(inp_p, from, netp, to,
1718 retval = sctp_findassociation_ep_addr(&inp, from, netp, to,
1726 * This routine will grub through the mbuf that is a INIT or INIT-ACK and
1727 * find all addresses that the sender has specified in any address list. Each
1728 * address will be used to lookup the TCB and see if one exits.
1730 static struct sctp_tcb *
1731 sctp_findassociation_special_addr(struct mbuf *m, int iphlen, int offset,
1732 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp,
1733 struct sockaddr *dest)
1735 struct sockaddr_in sin4;
1736 struct sockaddr_in6 sin6;
1737 struct sctp_paramhdr *phdr, parm_buf;
1738 struct sctp_tcb *retval;
1739 uint32_t ptype, plen;
1741 memset(&sin4, 0, sizeof(sin4));
1742 memset(&sin6, 0, sizeof(sin6));
1743 sin4.sin_len = sizeof(sin4);
1744 sin4.sin_family = AF_INET;
1745 sin4.sin_port = sh->src_port;
1746 sin6.sin6_len = sizeof(sin6);
1747 sin6.sin6_family = AF_INET6;
1748 sin6.sin6_port = sh->src_port;
1751 offset += sizeof(struct sctp_init_chunk);
1753 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
1754 while (phdr != NULL) {
1755 /* now we must see if we want the parameter */
1756 ptype = ntohs(phdr->param_type);
1757 plen = ntohs(phdr->param_length);
1761 if (ptype == SCTP_IPV4_ADDRESS &&
1762 plen == sizeof(struct sctp_ipv4addr_param)) {
1763 /* Get the rest of the address */
1764 struct sctp_ipv4addr_param ip4_parm, *p4;
1766 phdr = sctp_get_next_param(m, offset,
1767 (struct sctp_paramhdr *)&ip4_parm, min(plen, sizeof(ip4_parm)));
1771 p4 = (struct sctp_ipv4addr_param *)phdr;
1772 memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr));
1774 retval = sctp_findassociation_ep_addr(inp_p,
1775 (struct sockaddr *)&sin4, netp, dest, NULL);
1776 if (retval != NULL) {
1779 } else if (ptype == SCTP_IPV6_ADDRESS &&
1780 plen == sizeof(struct sctp_ipv6addr_param)) {
1781 /* Get the rest of the address */
1782 struct sctp_ipv6addr_param ip6_parm, *p6;
1784 phdr = sctp_get_next_param(m, offset,
1785 (struct sctp_paramhdr *)&ip6_parm, min(plen, sizeof(ip6_parm)));
1789 p6 = (struct sctp_ipv6addr_param *)phdr;
1790 memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr));
1792 retval = sctp_findassociation_ep_addr(inp_p,
1793 (struct sockaddr *)&sin6, netp, dest, NULL);
1794 if (retval != NULL) {
1798 offset += SCTP_SIZE32(plen);
1799 phdr = sctp_get_next_param(m, offset, &parm_buf,
1806 sctp_does_stcb_own_this_addr(struct sctp_tcb *stcb, struct sockaddr *to)
1808 struct sctp_nets *net;
1811 * Simple question, the ports match, does the tcb own the to
1814 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
1818 /* have to look at all bound addresses */
1819 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1820 if (net->ro._l_addr.sa.sa_family != to->sa_family) {
1821 /* not the same family, can't be a match */
1824 switch (to->sa_family) {
1827 struct sockaddr_in *sin, *rsin;
1829 sin = (struct sockaddr_in *)&net->ro._l_addr;
1830 rsin = (struct sockaddr_in *)to;
1831 if (sin->sin_addr.s_addr ==
1832 rsin->sin_addr.s_addr) {
1841 struct sockaddr_in6 *sin6, *rsin6;
1843 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1844 rsin6 = (struct sockaddr_in6 *)to;
1845 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1847 /* Update the endpoint pointer */
1858 /* Nope, do not have the address ;-( */
1862 static struct sctp_tcb *
1863 sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag,
1864 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport,
1865 uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
1868 * Use my vtag to hash. If we find it we then verify the source addr
1869 * is in the assoc. If all goes well we save a bit on rec of a
1872 struct sctpasochead *head;
1873 struct sctp_nets *net;
1874 struct sctp_tcb *stcb;
1878 SCTP_INP_INFO_RLOCK();
1879 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag,
1880 SCTP_BASE_INFO(hashasocmark))];
1883 SCTP_INP_INFO_RUNLOCK();
1886 LIST_FOREACH(stcb, head, sctp_asocs) {
1887 SCTP_INP_RLOCK(stcb->sctp_ep);
1888 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1889 SCTP_INP_RUNLOCK(stcb->sctp_ep);
1892 SCTP_TCB_LOCK(stcb);
1893 SCTP_INP_RUNLOCK(stcb->sctp_ep);
1894 if (stcb->asoc.my_vtag == vtag) {
1896 if (stcb->rport != rport) {
1897 SCTP_TCB_UNLOCK(stcb);
1900 if (stcb->sctp_ep->sctp_lport != lport) {
1901 SCTP_TCB_UNLOCK(stcb);
1904 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1905 SCTP_TCB_UNLOCK(stcb);
1908 /* RRS:Need toaddr check here */
1909 if (sctp_does_stcb_own_this_addr(stcb, to) == 0) {
1910 /* Endpoint does not own this address */
1911 SCTP_TCB_UNLOCK(stcb);
1916 * If we have both vtags thats all we match
1919 if (stcb->asoc.peer_vtag == remote_tag) {
1921 * If both tags match we consider it
1922 * conclusive and check NO
1923 * source/destination addresses
1928 if (skip_src_check) {
1931 net = sctp_findnet(stcb, from);
1933 *netp = NULL; /* unknown */
1936 *inp_p = stcb->sctp_ep;
1937 SCTP_INP_INFO_RUNLOCK();
1940 net = sctp_findnet(stcb, from);
1944 SCTP_STAT_INCR(sctps_vtagexpress);
1945 *inp_p = stcb->sctp_ep;
1946 SCTP_INP_INFO_RUNLOCK();
1950 * not him, this should only happen in rare
1951 * cases so I peg it.
1953 SCTP_STAT_INCR(sctps_vtagbogus);
1956 SCTP_TCB_UNLOCK(stcb);
1958 SCTP_INP_INFO_RUNLOCK();
1963 * Find an association with the pointer to the inbound IP packet. This can be
1964 * a IPv4 or IPv6 packet.
1967 sctp_findassociation_addr(struct mbuf *m, int iphlen, int offset,
1968 struct sctphdr *sh, struct sctp_chunkhdr *ch,
1969 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
1973 struct sctp_tcb *retval;
1974 struct sockaddr_storage to_store, from_store;
1975 struct sockaddr *to = (struct sockaddr *)&to_store;
1976 struct sockaddr *from = (struct sockaddr *)&from_store;
1977 struct sctp_inpcb *inp;
1979 iph = mtod(m, struct ip *);
1980 switch (iph->ip_v) {
1984 struct sockaddr_in *from4;
1986 from4 = (struct sockaddr_in *)&from_store;
1987 bzero(from4, sizeof(*from4));
1988 from4->sin_family = AF_INET;
1989 from4->sin_len = sizeof(struct sockaddr_in);
1990 from4->sin_addr.s_addr = iph->ip_src.s_addr;
1991 from4->sin_port = sh->src_port;
1995 case IPV6_VERSION >> 4:
1998 struct ip6_hdr *ip6;
1999 struct sockaddr_in6 *from6;
2001 ip6 = mtod(m, struct ip6_hdr *);
2002 from6 = (struct sockaddr_in6 *)&from_store;
2003 bzero(from6, sizeof(*from6));
2004 from6->sin6_family = AF_INET6;
2005 from6->sin6_len = sizeof(struct sockaddr_in6);
2006 from6->sin6_addr = ip6->ip6_src;
2007 from6->sin6_port = sh->src_port;
2008 /* Get the scopes in properly to the sin6 addr's */
2009 /* we probably don't need these operations */
2010 (void)sa6_recoverscope(from6);
2011 sa6_embedscope(from6, MODULE_GLOBAL(ip6_use_defzone));
2016 /* Currently not supported. */
2021 switch (iph->ip_v) {
2025 struct sockaddr_in *to4;
2027 to4 = (struct sockaddr_in *)&to_store;
2028 bzero(to4, sizeof(*to4));
2029 to4->sin_family = AF_INET;
2030 to4->sin_len = sizeof(struct sockaddr_in);
2031 to4->sin_addr.s_addr = iph->ip_dst.s_addr;
2032 to4->sin_port = sh->dest_port;
2036 case IPV6_VERSION >> 4:
2039 struct ip6_hdr *ip6;
2040 struct sockaddr_in6 *to6;
2042 ip6 = mtod(m, struct ip6_hdr *);
2043 to6 = (struct sockaddr_in6 *)&to_store;
2044 bzero(to6, sizeof(*to6));
2045 to6->sin6_family = AF_INET6;
2046 to6->sin6_len = sizeof(struct sockaddr_in6);
2047 to6->sin6_addr = ip6->ip6_dst;
2048 to6->sin6_port = sh->dest_port;
2049 /* Get the scopes in properly to the sin6 addr's */
2050 /* we probably don't need these operations */
2051 (void)sa6_recoverscope(to6);
2052 sa6_embedscope(to6, MODULE_GLOBAL(ip6_use_defzone));
2061 /* we only go down this path if vtag is non-zero */
2062 retval = sctp_findassoc_by_vtag(from, to, ntohl(sh->v_tag),
2063 inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0);
2069 if ((ch->chunk_type != SCTP_INITIATION) &&
2070 (ch->chunk_type != SCTP_INITIATION_ACK) &&
2071 (ch->chunk_type != SCTP_COOKIE_ACK) &&
2072 (ch->chunk_type != SCTP_COOKIE_ECHO)) {
2073 /* Other chunk types go to the tcp pool. */
2077 retval = sctp_findassociation_addr_sa(to, from, inp_p, netp,
2078 find_tcp_pool, vrf_id);
2081 retval = sctp_findassociation_addr_sa(to, from, &inp, netp,
2082 find_tcp_pool, vrf_id);
2084 SCTPDBG(SCTP_DEBUG_PCB1, "retval:%p inp:%p\n", retval, inp);
2085 if (retval == NULL && inp) {
2086 /* Found a EP but not this address */
2087 if ((ch->chunk_type == SCTP_INITIATION) ||
2088 (ch->chunk_type == SCTP_INITIATION_ACK)) {
2090 * special hook, we do NOT return linp or an
2091 * association that is linked to an existing
2092 * association that is under the TCP pool (i.e. no
2093 * listener exists). The endpoint finding routine
2094 * will always find a listner before examining the
2097 if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
2103 retval = sctp_findassociation_special_addr(m, iphlen,
2104 offset, sh, &inp, netp, to);
2105 if (inp_p != NULL) {
2110 SCTPDBG(SCTP_DEBUG_PCB1, "retval is %p\n", retval);
2115 * lookup an association by an ASCONF lookup address.
2116 * if the lookup address is 0.0.0.0 or ::0, use the vtag to do the lookup
2119 sctp_findassociation_ep_asconf(struct mbuf *m, int iphlen, int offset,
2120 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2122 struct sctp_tcb *stcb;
2123 struct sockaddr_in *sin;
2126 struct sockaddr_in6 *sin6;
2129 struct sockaddr_storage local_store, remote_store;
2130 struct sockaddr *to;
2134 struct ip6_hdr *ip6;
2137 struct sctp_paramhdr parm_buf, *phdr;
2139 int zero_address = 0;
2142 memset(&local_store, 0, sizeof(local_store));
2143 memset(&remote_store, 0, sizeof(remote_store));
2144 to = (struct sockaddr *)&local_store;
2145 /* First get the destination address setup too. */
2146 iph = mtod(m, struct ip *);
2147 switch (iph->ip_v) {
2150 sin = (struct sockaddr_in *)&local_store;
2151 sin->sin_family = AF_INET;
2152 sin->sin_len = sizeof(*sin);
2153 sin->sin_port = sh->dest_port;
2154 sin->sin_addr.s_addr = iph->ip_dst.s_addr;
2157 case IPV6_VERSION >> 4:
2159 ip6 = mtod(m, struct ip6_hdr *);
2160 sin6 = (struct sockaddr_in6 *)&local_store;
2161 sin6->sin6_family = AF_INET6;
2162 sin6->sin6_len = sizeof(*sin6);
2163 sin6->sin6_port = sh->dest_port;
2164 sin6->sin6_addr = ip6->ip6_dst;
2171 phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk),
2172 &parm_buf, sizeof(struct sctp_paramhdr));
2174 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n",
2178 ptype = (int)((uint32_t) ntohs(phdr->param_type));
2179 /* get the correlation address */
2182 case SCTP_IPV6_ADDRESS:
2184 /* ipv6 address param */
2185 struct sctp_ipv6addr_param *p6, p6_buf;
2187 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) {
2190 p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m,
2191 offset + sizeof(struct sctp_asconf_chunk),
2192 &p6_buf.ph, sizeof(*p6));
2194 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n",
2198 sin6 = (struct sockaddr_in6 *)&remote_store;
2199 sin6->sin6_family = AF_INET6;
2200 sin6->sin6_len = sizeof(*sin6);
2201 sin6->sin6_port = sh->src_port;
2202 memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr));
2203 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
2208 case SCTP_IPV4_ADDRESS:
2210 /* ipv4 address param */
2211 struct sctp_ipv4addr_param *p4, p4_buf;
2213 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) {
2216 p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m,
2217 offset + sizeof(struct sctp_asconf_chunk),
2218 &p4_buf.ph, sizeof(*p4));
2220 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n",
2224 sin = (struct sockaddr_in *)&remote_store;
2225 sin->sin_family = AF_INET;
2226 sin->sin_len = sizeof(*sin);
2227 sin->sin_port = sh->src_port;
2228 memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr));
2229 if (sin->sin_addr.s_addr == INADDR_ANY)
2234 /* invalid address param type */
2239 stcb = sctp_findassoc_by_vtag(NULL, to, ntohl(sh->v_tag), inp_p,
2240 netp, sh->src_port, sh->dest_port, 1, vrf_id, 0);
2242 * printf("findassociation_ep_asconf: zero lookup address
2243 * finds stcb 0x%x\n", (uint32_t)stcb);
2246 stcb = sctp_findassociation_ep_addr(inp_p,
2247 (struct sockaddr *)&remote_store, netp,
2255 * allocate a sctp_inpcb and setup a temporary binding to a port/all
2256 * addresses. This way if we don't get a bind we by default pick a ephemeral
2257 * port with all addresses bound.
2260 sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
2263 * we get called when a new endpoint starts up. We need to allocate
2264 * the sctp_inpcb structure from the zone and init it. Mark it as
2265 * unbound and find a port that we can use as an ephemeral with
2266 * INADDR_ANY. If the user binds later no problem we can then add in
2267 * the specific addresses. And setup the default parameters for the
2271 struct sctp_inpcb *inp;
2273 struct timeval time;
2274 sctp_sharedkey_t *null_key;
2278 SCTP_INP_INFO_WLOCK();
2279 inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb);
2281 SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n");
2282 SCTP_INP_INFO_WUNLOCK();
2283 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2287 bzero(inp, sizeof(*inp));
2289 /* bump generations */
2290 /* setup socket pointers */
2291 inp->sctp_socket = so;
2292 inp->ip_inp.inp.inp_socket = so;
2293 inp->sctp_associd_counter = 1;
2294 inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT;
2295 inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
2296 /* init the small hash table we use to track asocid <-> tcb */
2297 inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark);
2298 if (inp->sctp_asocidhash == NULL) {
2299 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2300 SCTP_INP_INFO_WUNLOCK();
2305 struct inpcbpolicy *pcb_sp = NULL;
2307 error = ipsec_init_policy(so, &pcb_sp);
2308 /* Arrange to share the policy */
2309 inp->ip_inp.inp.inp_sp = pcb_sp;
2310 ((struct in6pcb *)(&inp->ip_inp.inp))->in6p_sp = pcb_sp;
2313 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2314 SCTP_INP_INFO_WUNLOCK();
2318 SCTP_INCR_EP_COUNT();
2319 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
2320 SCTP_INP_INFO_WUNLOCK();
2322 so->so_pcb = (caddr_t)inp;
2324 if ((SCTP_SO_TYPE(so) == SOCK_DGRAM) ||
2325 (SCTP_SO_TYPE(so) == SOCK_SEQPACKET)) {
2326 /* UDP style socket */
2327 inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
2328 SCTP_PCB_FLAGS_UNBOUND);
2329 /* Be sure it is NON-BLOCKING IO for UDP */
2330 /* SCTP_SET_SO_NBIO(so); */
2331 } else if (SCTP_SO_TYPE(so) == SOCK_STREAM) {
2332 /* TCP style socket */
2333 inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
2334 SCTP_PCB_FLAGS_UNBOUND);
2335 /* Be sure we have blocking IO by default */
2336 SCTP_CLEAR_SO_NBIO(so);
2339 * unsupported socket type (RAW, etc)- in case we missed it
2342 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
2343 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2344 return (EOPNOTSUPP);
2346 if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) {
2347 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2348 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2349 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) {
2350 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2351 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2352 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) {
2353 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2354 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2356 inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize),
2357 &inp->sctp_hashmark);
2358 if (inp->sctp_tcbhash == NULL) {
2359 SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
2360 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2361 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2364 inp->def_vrf_id = vrf_id;
2366 SCTP_INP_INFO_WLOCK();
2367 SCTP_INP_LOCK_INIT(inp);
2368 INP_LOCK_INIT(&inp->ip_inp.inp, "inp", "sctpinp");
2369 SCTP_INP_READ_INIT(inp);
2370 SCTP_ASOC_CREATE_LOCK_INIT(inp);
2371 /* lock the new ep */
2372 SCTP_INP_WLOCK(inp);
2374 /* add it to the info area */
2375 LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list);
2376 SCTP_INP_INFO_WUNLOCK();
2378 TAILQ_INIT(&inp->read_queue);
2379 LIST_INIT(&inp->sctp_addr_list);
2381 LIST_INIT(&inp->sctp_asoc_list);
2383 #ifdef SCTP_TRACK_FREED_ASOCS
2385 LIST_INIT(&inp->sctp_asoc_free_list);
2387 /* Init the timer structure for signature change */
2388 SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer);
2389 inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE;
2391 /* now init the actual endpoint default data */
2394 /* setup the base timeout information */
2395 m->sctp_timeoutticks[SCTP_TIMER_SEND] = SEC_TO_TICKS(SCTP_SEND_SEC); /* needed ? */
2396 m->sctp_timeoutticks[SCTP_TIMER_INIT] = SEC_TO_TICKS(SCTP_INIT_SEC); /* needed ? */
2397 m->sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default));
2398 m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default));
2399 m->sctp_timeoutticks[SCTP_TIMER_PMTU] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default));
2400 m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default));
2401 m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default));
2402 /* all max/min max are in ms */
2403 m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default);
2404 m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default);
2405 m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default);
2406 m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default);
2407 m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default);
2409 m->max_open_streams_intome = MAX_SCTP_STREAMS;
2411 m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default);
2412 m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default);
2413 m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default);
2414 m->sctp_sws_sender = SCTP_SWS_SENDER_DEF;
2415 m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF;
2416 m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default);
2417 if ((SCTP_BASE_SYSCTL(sctp_default_cc_module) >= SCTP_CC_RFC2581) &&
2418 (SCTP_BASE_SYSCTL(sctp_default_cc_module) <= SCTP_CC_HTCP)) {
2419 m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module);
2421 /* sysctl done with invalid value, set to 2581 */
2422 m->sctp_default_cc_module = SCTP_CC_RFC2581;
2424 /* number of streams to pre-open on a association */
2425 m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default);
2427 /* Add adaptation cookie */
2428 m->adaptation_layer_indicator = 0x504C5253;
2430 /* seed random number generator */
2431 m->random_counter = 1;
2432 m->store_at = SCTP_SIGNATURE_SIZE;
2433 SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers));
2434 sctp_fill_random_store(m);
2436 /* Minimum cookie size */
2437 m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) +
2438 sizeof(struct sctp_state_cookie);
2439 m->size_of_a_cookie += SCTP_SIGNATURE_SIZE;
2441 /* Setup the initial secret */
2442 (void)SCTP_GETTIME_TIMEVAL(&time);
2443 m->time_of_secret_change = time.tv_sec;
2445 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
2446 m->secret_key[0][i] = sctp_select_initial_TSN(m);
2448 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
2450 /* How long is a cookie good for ? */
2451 m->def_cookie_life = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default));
2453 * Initialize authentication parameters
2455 m->local_hmacs = sctp_default_supported_hmaclist();
2456 m->local_auth_chunks = sctp_alloc_chunklist();
2457 sctp_auth_set_default_chunks(m->local_auth_chunks);
2458 LIST_INIT(&m->shared_keys);
2459 /* add default NULL key as key id 0 */
2460 null_key = sctp_alloc_sharedkey();
2461 sctp_insert_sharedkey(&m->shared_keys, null_key);
2462 SCTP_INP_WUNLOCK(inp);
2463 #ifdef SCTP_LOG_CLOSING
2464 sctp_log_closing(inp, NULL, 12);
2471 sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp,
2472 struct sctp_tcb *stcb)
2474 struct sctp_nets *net;
2475 uint16_t lport, rport;
2476 struct sctppcbhead *head;
2477 struct sctp_laddr *laddr, *oladdr;
2479 atomic_add_int(&stcb->asoc.refcnt, 1);
2480 SCTP_TCB_UNLOCK(stcb);
2481 SCTP_INP_INFO_WLOCK();
2482 SCTP_INP_WLOCK(old_inp);
2483 SCTP_INP_WLOCK(new_inp);
2484 SCTP_TCB_LOCK(stcb);
2485 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2487 new_inp->sctp_ep.time_of_secret_change =
2488 old_inp->sctp_ep.time_of_secret_change;
2489 memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key,
2490 sizeof(old_inp->sctp_ep.secret_key));
2491 new_inp->sctp_ep.current_secret_number =
2492 old_inp->sctp_ep.current_secret_number;
2493 new_inp->sctp_ep.last_secret_number =
2494 old_inp->sctp_ep.last_secret_number;
2495 new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie;
2497 /* make it so new data pours into the new socket */
2498 stcb->sctp_socket = new_inp->sctp_socket;
2499 stcb->sctp_ep = new_inp;
2501 /* Copy the port across */
2502 lport = new_inp->sctp_lport = old_inp->sctp_lport;
2503 rport = stcb->rport;
2504 /* Pull the tcb from the old association */
2505 LIST_REMOVE(stcb, sctp_tcbhash);
2506 LIST_REMOVE(stcb, sctp_tcblist);
2507 if (stcb->asoc.in_asocid_hash) {
2508 LIST_REMOVE(stcb, sctp_tcbasocidhash);
2510 /* Now insert the new_inp into the TCP connected hash */
2511 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport),
2512 SCTP_BASE_INFO(hashtcpmark))];
2514 LIST_INSERT_HEAD(head, new_inp, sctp_hash);
2515 /* Its safe to access */
2516 new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
2518 /* Now move the tcb into the endpoint list */
2519 LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist);
2521 * Question, do we even need to worry about the ep-hash since we
2522 * only have one connection? Probably not :> so lets get rid of it
2523 * and not suck up any kernel memory in that.
2525 if (stcb->asoc.in_asocid_hash) {
2526 struct sctpasochead *lhd;
2528 lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id,
2529 new_inp->hashasocidmark)];
2530 LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash);
2532 /* Ok. Let's restart timer. */
2533 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2534 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp,
2538 SCTP_INP_INFO_WUNLOCK();
2539 if (new_inp->sctp_tcbhash != NULL) {
2540 SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark);
2541 new_inp->sctp_tcbhash = NULL;
2543 if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2544 /* Subset bound, so copy in the laddr list from the old_inp */
2545 LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) {
2546 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2547 if (laddr == NULL) {
2549 * Gak, what can we do? This assoc is really
2550 * HOSED. We probably should send an abort
2553 SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n");
2556 SCTP_INCR_LADDR_COUNT();
2557 bzero(laddr, sizeof(*laddr));
2558 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2559 laddr->ifa = oladdr->ifa;
2560 atomic_add_int(&laddr->ifa->refcount, 1);
2561 LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr,
2563 new_inp->laddr_count++;
2567 * Now any running timers need to be adjusted since we really don't
2568 * care if they are running or not just blast in the new_inp into
2572 stcb->asoc.hb_timer.ep = (void *)new_inp;
2573 stcb->asoc.dack_timer.ep = (void *)new_inp;
2574 stcb->asoc.asconf_timer.ep = (void *)new_inp;
2575 stcb->asoc.strreset_timer.ep = (void *)new_inp;
2576 stcb->asoc.shut_guard_timer.ep = (void *)new_inp;
2577 stcb->asoc.autoclose_timer.ep = (void *)new_inp;
2578 stcb->asoc.delayed_event_timer.ep = (void *)new_inp;
2579 stcb->asoc.delete_prim_timer.ep = (void *)new_inp;
2580 /* now what about the nets? */
2581 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2582 net->pmtu_timer.ep = (void *)new_inp;
2583 net->rxt_timer.ep = (void *)new_inp;
2584 net->fr_timer.ep = (void *)new_inp;
2586 SCTP_INP_WUNLOCK(new_inp);
2587 SCTP_INP_WUNLOCK(old_inp);
2593 /* sctp_ifap is used to bypass normal local address validation checks */
2595 sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
2596 struct sctp_ifa *sctp_ifap, struct thread *p)
2598 /* bind a ep to a socket address */
2599 struct sctppcbhead *head;
2600 struct sctp_inpcb *inp, *inp_tmp;
2601 struct inpcb *ip_inp;
2602 int port_reuse_active = 0;
2611 inp = (struct sctp_inpcb *)so->so_pcb;
2612 ip_inp = (struct inpcb *)so->so_pcb;
2615 SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port:%d\n",
2616 ntohs(((struct sockaddr_in *)addr)->sin_port));
2617 SCTPDBG(SCTP_DEBUG_PCB1, "Addr :");
2618 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
2621 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2622 /* already did a bind, subsequent binds NOT allowed ! */
2623 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2628 panic("null proc/thread");
2631 switch (addr->sa_family) {
2634 struct sockaddr_in *sin;
2636 /* IPV6_V6ONLY socket? */
2637 if (SCTP_IPV6_V6ONLY(ip_inp)) {
2638 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2641 if (addr->sa_len != sizeof(*sin)) {
2642 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2645 sin = (struct sockaddr_in *)addr;
2646 lport = sin->sin_port;
2648 * For LOOPBACK the prison_local_ip4() call
2649 * will transmute the ip address to the
2652 if (p && (error = prison_local_ip4(p->td_ucred, &sin->sin_addr)) != 0) {
2653 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2656 if (sin->sin_addr.s_addr != INADDR_ANY) {
2665 * Only for pure IPv6 Address. (No IPv4
2668 struct sockaddr_in6 *sin6;
2670 sin6 = (struct sockaddr_in6 *)addr;
2672 if (addr->sa_len != sizeof(*sin6)) {
2673 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2676 lport = sin6->sin6_port;
2679 * For LOOPBACK the prison_local_ip6() call
2680 * will transmute the ipv6 address to the
2683 if (p && (error = prison_local_ip6(p->td_ucred, &sin6->sin6_addr,
2684 (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
2685 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2688 if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2690 /* KAME hack: embed scopeid */
2691 if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
2692 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2696 /* this must be cleared for ifa_ifwithaddr() */
2697 sin6->sin6_scope_id = 0;
2702 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EAFNOSUPPORT);
2703 return (EAFNOSUPPORT);
2706 SCTP_INP_INFO_WLOCK();
2707 SCTP_INP_WLOCK(inp);
2708 /* Setup a vrf_id to be the default for the non-bind-all case. */
2709 vrf_id = inp->def_vrf_id;
2711 /* increase our count due to the unlock we do */
2712 SCTP_INP_INCR_REF(inp);
2715 * Did the caller specify a port? if so we must see if a ep
2716 * already has this one bound.
2718 /* got to be root to get at low ports */
2719 if (ntohs(lport) < IPPORT_RESERVED) {
2721 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2723 SCTP_INP_DECR_REF(inp);
2724 SCTP_INP_WUNLOCK(inp);
2725 SCTP_INP_INFO_WUNLOCK();
2730 SCTP_INP_DECR_REF(inp);
2731 SCTP_INP_WUNLOCK(inp);
2732 SCTP_INP_INFO_WUNLOCK();
2733 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2736 SCTP_INP_WUNLOCK(inp);
2738 vrf_id = inp->def_vrf_id;
2739 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2740 if (inp_tmp != NULL) {
2742 * lock guy returned and lower count note
2743 * that we are not bound so inp_tmp should
2744 * NEVER be inp. And it is this inp
2745 * (inp_tmp) that gets the reference bump,
2746 * so we must lower it.
2748 SCTP_INP_DECR_REF(inp_tmp);
2750 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2751 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2753 * Ok, must be one-2-one and
2754 * allowing port re-use
2756 port_reuse_active = 1;
2757 goto continue_anyway;
2759 SCTP_INP_DECR_REF(inp);
2760 SCTP_INP_INFO_WUNLOCK();
2761 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2762 return (EADDRINUSE);
2765 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2766 if (inp_tmp != NULL) {
2768 * lock guy returned and lower count note
2769 * that we are not bound so inp_tmp should
2770 * NEVER be inp. And it is this inp
2771 * (inp_tmp) that gets the reference bump,
2772 * so we must lower it.
2774 SCTP_INP_DECR_REF(inp_tmp);
2776 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2777 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2779 * Ok, must be one-2-one and
2780 * allowing port re-use
2782 port_reuse_active = 1;
2783 goto continue_anyway;
2785 SCTP_INP_DECR_REF(inp);
2786 SCTP_INP_INFO_WUNLOCK();
2787 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2788 return (EADDRINUSE);
2792 SCTP_INP_WLOCK(inp);
2794 /* verify that no lport is not used by a singleton */
2795 if ((port_reuse_active == 0) &&
2796 (inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))
2798 /* Sorry someone already has this one bound */
2799 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2800 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2801 port_reuse_active = 1;
2803 SCTP_INP_DECR_REF(inp);
2804 SCTP_INP_WUNLOCK(inp);
2805 SCTP_INP_INFO_WUNLOCK();
2806 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2807 return (EADDRINUSE);
2812 uint16_t first, last, candidate;
2816 if (ip_inp->inp_flags & INP_HIGHPORT) {
2817 first = MODULE_GLOBAL(ipport_hifirstauto);
2818 last = MODULE_GLOBAL(ipport_hilastauto);
2819 } else if (ip_inp->inp_flags & INP_LOWPORT) {
2821 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2823 SCTP_INP_DECR_REF(inp);
2824 SCTP_INP_WUNLOCK(inp);
2825 SCTP_INP_INFO_WUNLOCK();
2826 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2829 first = MODULE_GLOBAL(ipport_lowfirstauto);
2830 last = MODULE_GLOBAL(ipport_lowlastauto);
2832 first = MODULE_GLOBAL(ipport_firstauto);
2833 last = MODULE_GLOBAL(ipport_lastauto);
2842 count = last - first + 1; /* number of candidates */
2843 candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count);
2847 if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) {
2852 SCTP_INP_DECR_REF(inp);
2853 SCTP_INP_WUNLOCK(inp);
2854 SCTP_INP_INFO_WUNLOCK();
2855 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2856 return (EADDRINUSE);
2858 if (candidate == last)
2861 candidate = candidate + 1;
2864 lport = htons(candidate);
2866 SCTP_INP_DECR_REF(inp);
2867 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE |
2868 SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
2870 * this really should not happen. The guy did a non-blocking
2871 * bind and then did a close at the same time.
2873 SCTP_INP_WUNLOCK(inp);
2874 SCTP_INP_INFO_WUNLOCK();
2875 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2878 /* ok we look clear to give out this port, so lets setup the binding */
2880 /* binding to all addresses, so just set in the proper flags */
2881 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL;
2882 /* set the automatic addr changes from kernel flag */
2883 if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) {
2884 sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
2885 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
2887 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
2888 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
2890 if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) {
2891 sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
2893 sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
2896 * set the automatic mobility_base from kernel flag (by
2899 if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) {
2900 sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE);
2901 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
2903 sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE);
2904 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
2907 * set the automatic mobility_fasthandoff from kernel flag
2910 if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) {
2911 sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF);
2912 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
2914 sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF);
2915 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
2919 * bind specific, make sure flags is off and add a new
2920 * address structure to the sctp_addr_list inside the ep
2923 * We will need to allocate one and insert it at the head. The
2924 * socketopt call can just insert new addresses in there as
2925 * well. It will also have to do the embed scope kame hack
2926 * too (before adding).
2928 struct sctp_ifa *ifa;
2929 struct sockaddr_storage store_sa;
2931 memset(&store_sa, 0, sizeof(store_sa));
2932 if (addr->sa_family == AF_INET) {
2933 struct sockaddr_in *sin;
2935 sin = (struct sockaddr_in *)&store_sa;
2936 memcpy(sin, addr, sizeof(struct sockaddr_in));
2938 } else if (addr->sa_family == AF_INET6) {
2939 struct sockaddr_in6 *sin6;
2941 sin6 = (struct sockaddr_in6 *)&store_sa;
2942 memcpy(sin6, addr, sizeof(struct sockaddr_in6));
2943 sin6->sin6_port = 0;
2946 * first find the interface with the bound address need to
2947 * zero out the port to find the address! yuck! can't do
2948 * this earlier since need port for sctp_pcb_findep()
2950 if (sctp_ifap != NULL)
2954 * Note for BSD we hit here always other O/S's will
2955 * pass things in via the sctp_ifap argument
2958 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&store_sa,
2959 vrf_id, SCTP_ADDR_NOT_LOCKED);
2962 /* Can't find an interface with that address */
2963 SCTP_INP_WUNLOCK(inp);
2964 SCTP_INP_INFO_WUNLOCK();
2965 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRNOTAVAIL);
2966 return (EADDRNOTAVAIL);
2968 if (addr->sa_family == AF_INET6) {
2969 /* GAK, more FIXME IFA lock? */
2970 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
2971 /* Can't bind a non-existent addr. */
2972 SCTP_INP_WUNLOCK(inp);
2973 SCTP_INP_INFO_WUNLOCK();
2974 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2978 /* we're not bound all */
2979 inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL;
2980 /* allow bindx() to send ASCONF's for binding changes */
2981 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
2982 /* clear automatic addr changes from kernel flag */
2983 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
2985 /* add this address to the endpoint list */
2986 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0);
2988 SCTP_INP_WUNLOCK(inp);
2989 SCTP_INP_INFO_WUNLOCK();
2994 /* find the bucket */
2995 if (port_reuse_active) {
2996 /* Put it into tcp 1-2-1 hash */
2997 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport),
2998 SCTP_BASE_INFO(hashtcpmark))];
2999 inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
3001 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
3002 SCTP_BASE_INFO(hashmark))];
3004 /* put it in the bucket */
3005 LIST_INSERT_HEAD(head, inp, sctp_hash);
3006 SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n",
3007 head, ntohs(lport), port_reuse_active);
3008 /* set in the port */
3009 inp->sctp_lport = lport;
3011 /* turn off just the unbound flag */
3012 inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
3013 SCTP_INP_WUNLOCK(inp);
3014 SCTP_INP_INFO_WUNLOCK();
3020 sctp_iterator_inp_being_freed(struct sctp_inpcb *inp, struct sctp_inpcb *inp_next)
3022 struct sctp_iterator *it;
3025 * We enter with the only the ITERATOR_LOCK in place and a write
3026 * lock on the inp_info stuff.
3030 * Go through all iterators, we must do this since it is possible
3031 * that some iterator does NOT have the lock, but is waiting for it.
3032 * And the one that had the lock has either moved in the last
3033 * iteration or we just cleared it above. We need to find all of
3034 * those guys. The list of iterators should never be very big
3037 TAILQ_FOREACH(it, &SCTP_BASE_INFO(iteratorhead), sctp_nxt_itr) {
3038 if (it == inp->inp_starting_point_for_iterator)
3039 /* skip this guy, he's special */
3041 if (it->inp == inp) {
3043 * This is tricky and we DON'T lock the iterator.
3044 * Reason is he's running but waiting for me since
3045 * inp->inp_starting_point_for_iterator has the lock
3046 * on me (the guy above we skipped). This tells us
3047 * its is not running but waiting for
3048 * inp->inp_starting_point_for_iterator to be
3049 * released by the guy that does have our INP in a
3052 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3056 /* set him up to do the next guy not me */
3062 it = inp->inp_starting_point_for_iterator;
3064 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3073 /* release sctp_inpcb unbind the port */
3075 sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
3078 * Here we free a endpoint. We must find it (if it is in the Hash
3079 * table) and remove it from there. Then we must also find it in the
3080 * overall list and remove it from there. After all removals are
3081 * complete then any timer has to be stopped. Then start the actual
3082 * freeing. a) Any local lists. b) Any associations. c) The hash of
3083 * all associations. d) finally the ep itself.
3086 struct sctp_inpcb *inp_save;
3087 struct sctp_tcb *asoc, *nasoc;
3088 struct sctp_laddr *laddr, *nladdr;
3089 struct inpcb *ip_pcb;
3092 struct sctp_queued_to_read *sq;
3096 sctp_sharedkey_t *shared_key;
3099 #ifdef SCTP_LOG_CLOSING
3100 sctp_log_closing(inp, NULL, 0);
3102 SCTP_ITERATOR_LOCK();
3103 so = inp->sctp_socket;
3104 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
3105 /* been here before.. eeks.. get out of here */
3106 SCTP_PRINTF("This conflict in free SHOULD not be happening! from %d, imm %d\n", from, immediate);
3107 SCTP_ITERATOR_UNLOCK();
3108 #ifdef SCTP_LOG_CLOSING
3109 sctp_log_closing(inp, NULL, 1);
3113 SCTP_ASOC_CREATE_LOCK(inp);
3114 SCTP_INP_INFO_WLOCK();
3116 SCTP_INP_WLOCK(inp);
3117 /* First time through we have the socket lock, after that no more. */
3118 if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
3120 * Once we are in we can remove the flag from = 1 is only
3121 * passed from the actual closing routines that are called
3122 * via the sockets layer.
3124 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP;
3125 /* socket is gone, so no more wakeups allowed */
3126 inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE;
3127 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
3128 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
3130 sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL,
3131 SCTP_FROM_SCTP_PCB + SCTP_LOC_1);
3134 sctp_m_freem(inp->control);
3135 inp->control = NULL;
3138 sctp_m_freem(inp->pkt);
3142 ip_pcb = &inp->ip_inp.inp; /* we could just cast the main pointer
3143 * here but I will be nice :> (i.e.
3145 if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
3149 for ((asoc = LIST_FIRST(&inp->sctp_asoc_list)); asoc != NULL;
3151 SCTP_TCB_LOCK(asoc);
3152 nasoc = LIST_NEXT(asoc, sctp_tcblist);
3153 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3154 /* Skip guys being freed */
3155 /* asoc->sctp_socket = NULL; FIXME MT */
3157 SCTP_TCB_UNLOCK(asoc);
3160 if (((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_WAIT) ||
3161 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_ECHOED)) &&
3162 (asoc->asoc.total_output_queue_size == 0)) {
3164 * If we have data in queue, we don't want
3165 * to just free since the app may have done,
3166 * send()/close or connect/send/close. And
3167 * it wants the data to get across first.
3169 /* Just abandon things in the front states */
3170 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE,
3171 SCTP_FROM_SCTP_PCB + SCTP_LOC_2) == 0) {
3176 /* Disconnect the socket please */
3177 asoc->sctp_socket = NULL;
3178 asoc->asoc.state |= SCTP_STATE_CLOSED_SOCKET;
3179 if ((asoc->asoc.size_on_reasm_queue > 0) ||
3180 (asoc->asoc.control_pdapi) ||
3181 (asoc->asoc.size_on_all_streams > 0) ||
3182 (so && (so->so_rcv.sb_cc > 0))
3184 /* Left with Data unread */
3185 struct mbuf *op_err;
3187 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3188 0, M_DONTWAIT, 1, MT_DATA);
3190 /* Fill in the user initiated abort */
3191 struct sctp_paramhdr *ph;
3194 SCTP_BUF_LEN(op_err) =
3195 sizeof(struct sctp_paramhdr) + sizeof(uint32_t);
3197 struct sctp_paramhdr *);
3198 ph->param_type = htons(
3199 SCTP_CAUSE_USER_INITIATED_ABT);
3200 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3201 ippp = (uint32_t *) (ph + 1);
3202 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_3);
3204 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_3;
3205 #if defined(SCTP_PANIC_ON_ABORT)
3206 panic("inpcb_free does an abort");
3208 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3209 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3210 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3211 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3212 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3214 if (sctp_free_assoc(inp, asoc,
3215 SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_4) == 0) {
3219 } else if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3220 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3221 (asoc->asoc.stream_queue_cnt == 0)
3223 if (asoc->asoc.locked_on_sending) {
3226 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
3227 (SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
3229 * there is nothing queued to send,
3230 * so I send shutdown
3232 sctp_send_shutdown(asoc, asoc->asoc.primary_destination);
3233 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3234 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3235 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3237 SCTP_SET_STATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_SENT);
3238 SCTP_CLEAR_SUBSTATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_PENDING);
3239 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, asoc->sctp_ep, asoc,
3240 asoc->asoc.primary_destination);
3241 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3242 asoc->asoc.primary_destination);
3243 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED);
3246 /* mark into shutdown pending */
3247 struct sctp_stream_queue_pending *sp;
3249 asoc->asoc.state |= SCTP_STATE_SHUTDOWN_PENDING;
3250 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3251 asoc->asoc.primary_destination);
3252 if (asoc->asoc.locked_on_sending) {
3253 sp = TAILQ_LAST(&((asoc->asoc.locked_on_sending)->outqueue),
3256 SCTP_PRINTF("Error, sp is NULL, locked on sending is %p strm:%d\n",
3257 asoc->asoc.locked_on_sending,
3258 asoc->asoc.locked_on_sending->stream_no);
3260 if ((sp->length == 0) && (sp->msg_is_complete == 0))
3261 asoc->asoc.state |= SCTP_STATE_PARTIAL_MSG_LEFT;
3264 if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3265 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3266 (asoc->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
3267 struct mbuf *op_err;
3270 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3271 0, M_DONTWAIT, 1, MT_DATA);
3277 struct sctp_paramhdr *ph;
3280 SCTP_BUF_LEN(op_err) =
3281 (sizeof(struct sctp_paramhdr) +
3284 struct sctp_paramhdr *);
3285 ph->param_type = htons(
3286 SCTP_CAUSE_USER_INITIATED_ABT);
3287 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3288 ippp = (uint32_t *) (ph + 1);
3289 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_5);
3291 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_5;
3292 #if defined(SCTP_PANIC_ON_ABORT)
3293 panic("inpcb_free does an abort");
3296 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3297 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3298 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3299 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3300 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3302 if (sctp_free_assoc(inp, asoc,
3303 SCTP_PCBFREE_NOFORCE,
3304 SCTP_FROM_SCTP_PCB + SCTP_LOC_6) == 0) {
3309 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
3313 SCTP_TCB_UNLOCK(asoc);
3315 /* now is there some left in our SHUTDOWN state? */
3317 SCTP_INP_WUNLOCK(inp);
3318 SCTP_ASOC_CREATE_UNLOCK(inp);
3319 SCTP_INP_INFO_WUNLOCK();
3320 SCTP_ITERATOR_UNLOCK();
3321 #ifdef SCTP_LOG_CLOSING
3322 sctp_log_closing(inp, NULL, 2);
3324 inp->sctp_socket = NULL;
3328 inp->sctp_socket = NULL;
3329 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) !=
3330 SCTP_PCB_FLAGS_UNBOUND) {
3332 * ok, this guy has been bound. It's port is somewhere in
3333 * the SCTP_BASE_INFO(hash table). Remove it!
3335 LIST_REMOVE(inp, sctp_hash);
3336 inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND;
3339 * If there is a timer running to kill us, forget it, since it may
3340 * have a contest on the INP lock.. which would cause us to die ...
3343 for ((asoc = LIST_FIRST(&inp->sctp_asoc_list)); asoc != NULL;
3345 nasoc = LIST_NEXT(asoc, sctp_tcblist);
3346 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3350 /* Free associations that are NOT killing us */
3351 SCTP_TCB_LOCK(asoc);
3352 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_COOKIE_WAIT) &&
3353 ((asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) {
3354 struct mbuf *op_err;
3357 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3358 0, M_DONTWAIT, 1, MT_DATA);
3360 /* Fill in the user initiated abort */
3361 struct sctp_paramhdr *ph;
3363 SCTP_BUF_LEN(op_err) = (sizeof(struct sctp_paramhdr) +
3365 ph = mtod(op_err, struct sctp_paramhdr *);
3366 ph->param_type = htons(
3367 SCTP_CAUSE_USER_INITIATED_ABT);
3368 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3369 ippp = (uint32_t *) (ph + 1);
3370 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_7);
3373 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_7;
3374 #if defined(SCTP_PANIC_ON_ABORT)
3375 panic("inpcb_free does an abort");
3377 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3378 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3379 } else if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3381 SCTP_TCB_UNLOCK(asoc);
3384 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3385 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3386 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3388 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_8) == 0) {
3393 /* Ok we have someone out there that will kill us */
3394 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3395 SCTP_INP_WUNLOCK(inp);
3396 SCTP_ASOC_CREATE_UNLOCK(inp);
3397 SCTP_INP_INFO_WUNLOCK();
3398 SCTP_ITERATOR_UNLOCK();
3399 #ifdef SCTP_LOG_CLOSING
3400 sctp_log_closing(inp, NULL, 3);
3404 if ((inp->refcount) || (inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) {
3405 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3406 sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
3407 SCTP_INP_WUNLOCK(inp);
3408 SCTP_ASOC_CREATE_UNLOCK(inp);
3409 SCTP_INP_INFO_WUNLOCK();
3410 SCTP_ITERATOR_UNLOCK();
3411 #ifdef SCTP_LOG_CLOSING
3412 sctp_log_closing(inp, NULL, 4);
3416 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3417 inp->sctp_ep.signature_change.type = 0;
3418 inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE;
3420 #ifdef SCTP_LOG_CLOSING
3421 sctp_log_closing(inp, NULL, 5);
3424 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3425 inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NONE;
3426 /* Clear the read queue */
3427 if ((inp->sctp_asocidhash) != NULL) {
3428 SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark);
3429 inp->sctp_asocidhash = NULL;
3431 /* sa_ignore FREED_MEMORY */
3432 while ((sq = TAILQ_FIRST(&inp->read_queue)) != NULL) {
3433 /* Its only abandoned if it had data left */
3435 SCTP_STAT_INCR(sctps_left_abandon);
3437 TAILQ_REMOVE(&inp->read_queue, sq, next);
3438 sctp_free_remote_addr(sq->whoFrom);
3440 so->so_rcv.sb_cc -= sq->length;
3442 sctp_m_freem(sq->data);
3446 * no need to free the net count, since at this point all
3449 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
3450 SCTP_DECR_READQ_COUNT();
3452 /* Now the sctp_pcb things */
3454 * free each asoc if it is not already closed/free. we can't use the
3455 * macro here since le_next will get freed as part of the
3456 * sctp_free_assoc() call.
3461 ipsec_delete_pcbpolicy(ip_pcb);
3464 /* Unlocks not needed since the socket is gone now */
3466 if (ip_pcb->inp_options) {
3467 (void)sctp_m_free(ip_pcb->inp_options);
3468 ip_pcb->inp_options = 0;
3470 if (ip_pcb->inp_moptions) {
3471 inp_freemoptions(ip_pcb->inp_moptions);
3472 ip_pcb->inp_moptions = 0;
3475 if (ip_pcb->inp_vflag & INP_IPV6) {
3476 struct in6pcb *in6p;
3478 in6p = (struct in6pcb *)inp;
3479 ip6_freepcbopts(in6p->in6p_outputopts);
3482 ip_pcb->inp_vflag = 0;
3483 /* free up authentication fields */
3484 if (inp->sctp_ep.local_auth_chunks != NULL)
3485 sctp_free_chunklist(inp->sctp_ep.local_auth_chunks);
3486 if (inp->sctp_ep.local_hmacs != NULL)
3487 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3489 shared_key = LIST_FIRST(&inp->sctp_ep.shared_keys);
3490 while (shared_key) {
3491 LIST_REMOVE(shared_key, next);
3492 sctp_free_sharedkey(shared_key);
3493 /* sa_ignore FREED_MEMORY */
3494 shared_key = LIST_FIRST(&inp->sctp_ep.shared_keys);
3497 inp_save = LIST_NEXT(inp, sctp_list);
3498 LIST_REMOVE(inp, sctp_list);
3500 /* fix any iterators only after out of the list */
3501 sctp_iterator_inp_being_freed(inp, inp_save);
3503 * if we have an address list the following will free the list of
3504 * ifaddr's that are set into this ep. Again macro limitations here,
3505 * since the LIST_FOREACH could be a bad idea.
3507 for ((laddr = LIST_FIRST(&inp->sctp_addr_list)); laddr != NULL;
3509 nladdr = LIST_NEXT(laddr, sctp_nxt_addr);
3510 sctp_remove_laddr(laddr);
3513 #ifdef SCTP_TRACK_FREED_ASOCS
3515 for ((asoc = LIST_FIRST(&inp->sctp_asoc_free_list)); asoc != NULL;
3517 nasoc = LIST_NEXT(asoc, sctp_tcblist);
3518 LIST_REMOVE(asoc, sctp_tcblist);
3519 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), asoc);
3520 SCTP_DECR_ASOC_COUNT();
3522 /* *** END TEMP CODE *** */
3524 /* Now lets see about freeing the EP hash table. */
3525 if (inp->sctp_tcbhash != NULL) {
3526 SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
3527 inp->sctp_tcbhash = NULL;
3529 /* Now we must put the ep memory back into the zone pool */
3530 INP_LOCK_DESTROY(&inp->ip_inp.inp);
3531 SCTP_INP_LOCK_DESTROY(inp);
3532 SCTP_INP_READ_DESTROY(inp);
3533 SCTP_ASOC_CREATE_LOCK_DESTROY(inp);
3534 SCTP_INP_INFO_WUNLOCK();
3535 SCTP_ITERATOR_UNLOCK();
3536 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
3537 SCTP_DECR_EP_COUNT();
3542 sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
3544 struct sctp_nets *net;
3546 /* locate the address */
3547 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3548 if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr))
3556 sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
3558 struct sctp_ifa *sctp_ifa;
3560 sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED);
3569 * add's a remote endpoint address, done with the INIT/INIT-ACK as well as
3570 * when a ASCONF arrives that adds it. It will also initialize all the cwnd
3574 sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
3575 int set_scope, int from)
3578 * The following is redundant to the same lines in the
3579 * sctp_aloc_assoc() but is needed since other's call the add
3582 struct sctp_nets *net, *netfirst;
3585 SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ",
3587 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr);
3589 netfirst = sctp_findnet(stcb, newaddr);
3592 * Lie and return ok, we don't want to make the association
3593 * go away for this behavior. It will happen in the TCP
3594 * model in a connected socket. It does not reach the hash
3595 * table until after the association is built so it can't be
3596 * found. Mark as reachable, since the initial creation will
3597 * have been cleared and the NOT_IN_ASSOC flag will have
3598 * been added... and we don't want to end up removing it
3601 if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) {
3602 netfirst->dest_state = (SCTP_ADDR_REACHABLE |
3603 SCTP_ADDR_UNCONFIRMED);
3605 netfirst->dest_state = SCTP_ADDR_REACHABLE;
3611 if (newaddr->sa_family == AF_INET) {
3612 struct sockaddr_in *sin;
3614 sin = (struct sockaddr_in *)newaddr;
3615 if (sin->sin_addr.s_addr == 0) {
3616 /* Invalid address */
3619 /* zero out the bzero area */
3620 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
3622 /* assure len is set */
3623 sin->sin_len = sizeof(struct sockaddr_in);
3625 #ifdef SCTP_DONT_DO_PRIVADDR_SCOPE
3626 stcb->ipv4_local_scope = 1;
3628 if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
3629 stcb->asoc.ipv4_local_scope = 1;
3631 #endif /* SCTP_DONT_DO_PRIVADDR_SCOPE */
3633 /* Validate the address is in scope */
3634 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) &&
3635 (stcb->asoc.ipv4_local_scope == 0)) {
3640 } else if (newaddr->sa_family == AF_INET6) {
3641 struct sockaddr_in6 *sin6;
3643 sin6 = (struct sockaddr_in6 *)newaddr;
3644 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3645 /* Invalid address */
3648 /* assure len is set */
3649 sin6->sin6_len = sizeof(struct sockaddr_in6);
3651 if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) {
3652 stcb->asoc.loopback_scope = 1;
3653 stcb->asoc.local_scope = 0;
3654 stcb->asoc.ipv4_local_scope = 1;
3655 stcb->asoc.site_scope = 1;
3656 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
3658 * If the new destination is a LINK_LOCAL we
3659 * must have common site scope. Don't set
3660 * the local scope since we may not share
3661 * all links, only loopback can do this.
3662 * Links on the local network would also be
3663 * on our private network for v4 too.
3665 stcb->asoc.ipv4_local_scope = 1;
3666 stcb->asoc.site_scope = 1;
3667 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
3669 * If the new destination is SITE_LOCAL then
3670 * we must have site scope in common.
3672 stcb->asoc.site_scope = 1;
3675 /* Validate the address is in scope */
3676 if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) &&
3677 (stcb->asoc.loopback_scope == 0)) {
3679 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
3680 (stcb->asoc.local_scope == 0)) {
3682 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
3683 (stcb->asoc.site_scope == 0)) {
3689 /* not supported family type */
3692 net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets);
3696 SCTP_INCR_RADDR_COUNT();
3697 bzero(net, sizeof(*net));
3698 (void)SCTP_GETTIME_TIMEVAL(&net->start_time);
3699 memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len);
3700 if (newaddr->sa_family == AF_INET) {
3701 ((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport;
3702 } else if (newaddr->sa_family == AF_INET6) {
3703 ((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport;
3705 net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id);
3706 if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) {
3707 stcb->asoc.loopback_scope = 1;
3708 stcb->asoc.ipv4_local_scope = 1;
3709 stcb->asoc.local_scope = 0;
3710 stcb->asoc.site_scope = 1;
3713 net->failure_threshold = stcb->asoc.def_net_failure;
3714 if (addr_inscope == 0) {
3715 net->dest_state = (SCTP_ADDR_REACHABLE |
3716 SCTP_ADDR_OUT_OF_SCOPE);
3718 if (from == SCTP_ADDR_IS_CONFIRMED)
3719 /* SCTP_ADDR_IS_CONFIRMED is passed by connect_x */
3720 net->dest_state = SCTP_ADDR_REACHABLE;
3722 net->dest_state = SCTP_ADDR_REACHABLE |
3723 SCTP_ADDR_UNCONFIRMED;
3726 * We set this to 0, the timer code knows that this means its an
3730 net->RTO_measured = 0;
3731 stcb->asoc.numnets++;
3732 *(&net->ref_count) = 1;
3733 net->tos_flowlabel = 0;
3734 if (SCTP_BASE_SYSCTL(sctp_udp_tunneling_for_client_enable)) {
3735 net->port = htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port));
3740 if (newaddr->sa_family == AF_INET)
3741 net->tos_flowlabel = stcb->asoc.default_tos;
3744 if (newaddr->sa_family == AF_INET6)
3745 net->tos_flowlabel = stcb->asoc.default_flowlabel;
3747 /* Init the timer structure */
3748 SCTP_OS_TIMER_INIT(&net->rxt_timer.timer);
3749 SCTP_OS_TIMER_INIT(&net->fr_timer.timer);
3750 SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer);
3752 /* Now generate a route for this guy */
3754 /* KAME hack: embed scopeid */
3755 if (newaddr->sa_family == AF_INET6) {
3756 struct sockaddr_in6 *sin6;
3758 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3759 (void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone));
3760 sin6->sin6_scope_id = 0;
3763 SCTP_RTALLOC((sctp_route_t *) & net->ro, stcb->asoc.vrf_id);
3765 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) {
3766 /* Get source address */
3767 net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep,
3769 (sctp_route_t *) & net->ro,
3773 /* Now get the interface MTU */
3774 if (net->ro._s_addr && net->ro._s_addr->ifn_p) {
3775 net->mtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p);
3779 #ifdef SCTP_PRINT_FOR_B_AND_M
3780 SCTP_PRINTF("We have found an interface mtu of %d\n", net->mtu);
3782 if (net->mtu == 0) {
3784 net->mtu = SCTP_DEFAULT_MTU;
3788 rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_rt);
3789 #ifdef SCTP_PRINT_FOR_B_AND_M
3790 SCTP_PRINTF("The route mtu is %d\n", rmtu);
3794 * Start things off to match mtu of
3797 SCTP_SET_MTU_OF_ROUTE(&net->ro._l_addr.sa,
3798 net->ro.ro_rt, net->mtu);
3801 * we take the route mtu over the interface,
3802 * since the route may be leading out the
3803 * loopback, or a different interface.
3808 if (from == SCTP_ALLOC_ASOC) {
3809 #ifdef SCTP_PRINT_FOR_B_AND_M
3810 SCTP_PRINTF("New assoc sets mtu to :%d\n", net->mtu);
3812 stcb->asoc.smallest_mtu = net->mtu;
3815 net->mtu = stcb->asoc.smallest_mtu;
3818 if (newaddr->sa_family == AF_INET6) {
3819 struct sockaddr_in6 *sin6;
3821 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3822 (void)sa6_recoverscope(sin6);
3826 net->mtu -= sizeof(struct udphdr);
3828 if (stcb->asoc.smallest_mtu > net->mtu) {
3829 #ifdef SCTP_PRINT_FOR_B_AND_M
3830 SCTP_PRINTF("new address mtu:%d smaller than smallest:%d\n",
3831 net->mtu, stcb->asoc.smallest_mtu);
3833 stcb->asoc.smallest_mtu = net->mtu;
3835 /* JRS - Use the congestion control given in the CC module */
3836 stcb->asoc.cc_functions.sctp_set_initial_cc_param(stcb, net);
3839 * CMT: CUC algo - set find_pseudo_cumack to TRUE (1) at beginning
3840 * of assoc (2005/06/27, iyengar@cis.udel.edu)
3842 net->find_pseudo_cumack = 1;
3843 net->find_rtx_pseudo_cumack = 1;
3844 net->src_addr_selected = 0;
3845 netfirst = TAILQ_FIRST(&stcb->asoc.nets);
3846 if (net->ro.ro_rt == NULL) {
3847 /* Since we have no route put it at the back */
3848 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
3849 } else if (netfirst == NULL) {
3850 /* We are the first one in the pool. */
3851 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
3852 } else if (netfirst->ro.ro_rt == NULL) {
3854 * First one has NO route. Place this one ahead of the first
3857 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
3858 } else if (net->ro.ro_rt->rt_ifp != netfirst->ro.ro_rt->rt_ifp) {
3860 * This one has a different interface than the one at the
3861 * top of the list. Place it ahead.
3863 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
3866 * Ok we have the same interface as the first one. Move
3867 * forward until we find either a) one with a NULL route...
3868 * insert ahead of that b) one with a different ifp.. insert
3869 * after that. c) end of the list.. insert at the tail.
3871 struct sctp_nets *netlook;
3874 netlook = TAILQ_NEXT(netfirst, sctp_next);
3875 if (netlook == NULL) {
3876 /* End of the list */
3877 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
3879 } else if (netlook->ro.ro_rt == NULL) {
3880 /* next one has NO route */
3881 TAILQ_INSERT_BEFORE(netfirst, net, sctp_next);
3883 } else if (netlook->ro.ro_rt->rt_ifp != net->ro.ro_rt->rt_ifp) {
3884 TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook,
3890 } while (netlook != NULL);
3893 /* got to have a primary set */
3894 if (stcb->asoc.primary_destination == 0) {
3895 stcb->asoc.primary_destination = net;
3896 } else if ((stcb->asoc.primary_destination->ro.ro_rt == NULL) &&
3898 ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
3899 /* No route to current primary adopt new primary */
3900 stcb->asoc.primary_destination = net;
3902 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, stcb->sctp_ep, stcb,
3904 /* Validate primary is first */
3905 net = TAILQ_FIRST(&stcb->asoc.nets);
3906 if ((net != stcb->asoc.primary_destination) &&
3907 (stcb->asoc.primary_destination)) {
3909 * first one on the list is NOT the primary sctp_cmpaddr()
3910 * is much more efficent if the primary is the first on the
3913 TAILQ_REMOVE(&stcb->asoc.nets,
3914 stcb->asoc.primary_destination, sctp_next);
3915 TAILQ_INSERT_HEAD(&stcb->asoc.nets,
3916 stcb->asoc.primary_destination, sctp_next);
3923 sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
3926 struct sctpasochead *head;
3927 struct sctp_tcb *lstcb;
3929 SCTP_INP_WLOCK(inp);
3931 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
3933 SCTP_INP_WUNLOCK(inp);
3937 * We don't allow assoc id to be 0, this is needed otherwise if the
3938 * id were to wrap we would have issues with some socket options.
3940 if (inp->sctp_associd_counter == 0) {
3941 inp->sctp_associd_counter++;
3943 id = inp->sctp_associd_counter;
3944 inp->sctp_associd_counter++;
3945 lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t) id, 0);
3949 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
3950 LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash);
3951 stcb->asoc.in_asocid_hash = 1;
3952 SCTP_INP_WUNLOCK(inp);
3957 * allocate an association and add it to the endpoint. The caller must be
3958 * careful to add all additional addresses once they are know right away or
3959 * else the assoc will be may experience a blackout scenario.
3962 sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
3963 int *error, uint32_t override_tag, uint32_t vrf_id,
3967 /* note the p argument is only valid in unbound sockets */
3969 struct sctp_tcb *stcb;
3970 struct sctp_association *asoc;
3971 struct sctpasochead *head;
3976 * Assumption made here: Caller has done a
3977 * sctp_findassociation_ep_addr(ep, addr's); to make sure the
3978 * address does not exist already.
3980 if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) {
3981 /* Hit max assoc, sorry no more */
3982 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
3986 if (firstaddr == NULL) {
3987 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3991 SCTP_INP_RLOCK(inp);
3992 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
3993 ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) ||
3994 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
3996 * If its in the TCP pool, its NOT allowed to create an
3997 * association. The parent listener needs to call
3998 * sctp_aloc_assoc.. or the one-2-many socket. If a peeled
3999 * off, or connected one does this.. its an error.
4001 SCTP_INP_RUNLOCK(inp);
4002 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4006 SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:");
4009 SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr);
4010 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4011 ntohs(((struct sockaddr_in *)firstaddr)->sin_port));
4013 SCTPDBG(SCTP_DEBUG_PCB3, "None\n");
4015 #endif /* SCTP_DEBUG */
4016 if (firstaddr->sa_family == AF_INET) {
4017 struct sockaddr_in *sin;
4019 sin = (struct sockaddr_in *)firstaddr;
4020 if ((sin->sin_port == 0) || (sin->sin_addr.s_addr == 0)) {
4021 /* Invalid address */
4022 SCTP_INP_RUNLOCK(inp);
4023 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4027 rport = sin->sin_port;
4028 } else if (firstaddr->sa_family == AF_INET6) {
4029 struct sockaddr_in6 *sin6;
4031 sin6 = (struct sockaddr_in6 *)firstaddr;
4032 if ((sin6->sin6_port == 0) ||
4033 (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))) {
4034 /* Invalid address */
4035 SCTP_INP_RUNLOCK(inp);
4036 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4040 rport = sin6->sin6_port;
4042 /* not supported family type */
4043 SCTP_INP_RUNLOCK(inp);
4044 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4048 SCTP_INP_RUNLOCK(inp);
4049 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4051 * If you have not performed a bind, then we need to do the
4052 * ephemerial bind for you.
4054 if ((err = sctp_inpcb_bind(inp->sctp_socket,
4055 (struct sockaddr *)NULL,
4056 (struct sctp_ifa *)NULL,
4059 /* bind error, probably perm */
4064 stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb);
4066 /* out of memory? */
4067 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
4071 SCTP_INCR_ASOC_COUNT();
4073 bzero(stcb, sizeof(*stcb));
4076 asoc->assoc_id = sctp_aloc_a_assoc_id(inp, stcb);
4077 SCTP_TCB_LOCK_INIT(stcb);
4078 SCTP_TCB_SEND_LOCK_INIT(stcb);
4079 stcb->rport = rport;
4080 /* setup back pointer's */
4081 stcb->sctp_ep = inp;
4082 stcb->sctp_socket = inp->sctp_socket;
4083 if ((err = sctp_init_asoc(inp, stcb, override_tag, vrf_id))) {
4085 SCTP_TCB_LOCK_DESTROY(stcb);
4086 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4087 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4088 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4089 SCTP_DECR_ASOC_COUNT();
4094 SCTP_INP_INFO_WLOCK();
4095 SCTP_INP_WLOCK(inp);
4096 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
4097 /* inpcb freed while alloc going on */
4098 SCTP_TCB_LOCK_DESTROY(stcb);
4099 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4100 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4101 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4102 SCTP_INP_WUNLOCK(inp);
4103 SCTP_INP_INFO_WUNLOCK();
4104 SCTP_DECR_ASOC_COUNT();
4105 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4109 SCTP_TCB_LOCK(stcb);
4111 /* now that my_vtag is set, add it to the hash */
4112 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))];
4113 /* put it in the bucket in the vtag hash of assoc's for the system */
4114 LIST_INSERT_HEAD(head, stcb, sctp_asocs);
4115 SCTP_INP_INFO_WUNLOCK();
4117 if ((err = sctp_add_remote_addr(stcb, firstaddr, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC))) {
4118 /* failure.. memory error? */
4119 if (asoc->strmout) {
4120 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4121 asoc->strmout = NULL;
4123 if (asoc->mapping_array) {
4124 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4125 asoc->mapping_array = NULL;
4127 if (asoc->nr_mapping_array) {
4128 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4129 asoc->nr_mapping_array = NULL;
4131 SCTP_DECR_ASOC_COUNT();
4132 SCTP_TCB_LOCK_DESTROY(stcb);
4133 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4134 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4135 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4136 SCTP_INP_WUNLOCK(inp);
4137 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4141 /* Init all the timers */
4142 SCTP_OS_TIMER_INIT(&asoc->hb_timer.timer);
4143 SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer);
4144 SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer);
4145 SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer);
4146 SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer);
4147 SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer);
4148 SCTP_OS_TIMER_INIT(&asoc->delayed_event_timer.timer);
4149 SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer);
4151 LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist);
4152 /* now file the port under the hash as well */
4153 if (inp->sctp_tcbhash != NULL) {
4154 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport,
4155 inp->sctp_hashmark)];
4156 LIST_INSERT_HEAD(head, stcb, sctp_tcbhash);
4158 SCTP_INP_WUNLOCK(inp);
4159 SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", stcb);
4165 sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
4167 struct sctp_association *asoc;
4171 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4172 if (net == asoc->primary_destination) {
4174 struct sctp_nets *lnet;
4176 lnet = TAILQ_FIRST(&asoc->nets);
4178 * Mobility adaptation Ideally, if deleted destination is
4179 * the primary, it becomes a fast retransmission trigger by
4180 * the subsequent SET PRIMARY. (by micchie)
4182 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
4183 SCTP_MOBILITY_BASE) ||
4184 sctp_is_mobility_feature_on(stcb->sctp_ep,
4185 SCTP_MOBILITY_FASTHANDOFF)) {
4186 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n");
4187 if (asoc->deleted_primary != NULL) {
4188 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n");
4191 asoc->deleted_primary = net;
4192 atomic_add_int(&net->ref_count, 1);
4193 memset(&net->lastsa, 0, sizeof(net->lastsa));
4194 memset(&net->lastsv, 0, sizeof(net->lastsv));
4195 sctp_mobility_feature_on(stcb->sctp_ep,
4196 SCTP_MOBILITY_PRIM_DELETED);
4197 sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED,
4198 stcb->sctp_ep, stcb, NULL);
4201 /* Try to find a confirmed primary */
4202 asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0);
4204 if (net == asoc->last_data_chunk_from) {
4206 asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets);
4208 if (net == asoc->last_control_chunk_from) {
4210 asoc->last_control_chunk_from = NULL;
4212 sctp_free_remote_addr(net);
4216 * remove a remote endpoint address from an association, it will fail if the
4217 * address does not exist.
4220 sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
4223 * Here we need to remove a remote address. This is quite simple, we
4224 * first find it in the list of address for the association
4225 * (tasoc->asoc.nets) and then if it is there, we do a LIST_REMOVE
4226 * on that item. Note we do not allow it to be removed if there are
4227 * no other addresses.
4229 struct sctp_association *asoc;
4230 struct sctp_nets *net, *net_tmp;
4234 /* locate the address */
4235 for (net = TAILQ_FIRST(&asoc->nets); net != NULL; net = net_tmp) {
4236 net_tmp = TAILQ_NEXT(net, sctp_next);
4237 if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) {
4240 if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr,
4242 /* we found the guy */
4243 if (asoc->numnets < 2) {
4244 /* Must have at LEAST two remote addresses */
4247 sctp_remove_net(stcb, net);
4257 sctp_delete_from_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4259 struct sctpvtaghead *chain;
4260 struct sctp_tagblock *twait_block;
4264 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4265 if (!LIST_EMPTY(chain)) {
4266 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4267 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4268 if ((twait_block->vtag_block[i].v_tag == tag) &&
4269 (twait_block->vtag_block[i].lport == lport) &&
4270 (twait_block->vtag_block[i].rport == rport)) {
4271 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4272 twait_block->vtag_block[i].v_tag = 0;
4273 twait_block->vtag_block[i].lport = 0;
4274 twait_block->vtag_block[i].rport = 0;
4286 sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4288 struct sctpvtaghead *chain;
4289 struct sctp_tagblock *twait_block;
4293 SCTP_INP_INFO_WLOCK();
4294 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4295 if (!LIST_EMPTY(chain)) {
4296 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4297 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4298 if ((twait_block->vtag_block[i].v_tag == tag) &&
4299 (twait_block->vtag_block[i].lport == lport) &&
4300 (twait_block->vtag_block[i].rport == rport)) {
4309 SCTP_INP_INFO_WUNLOCK();
4315 sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport)
4317 struct sctpvtaghead *chain;
4318 struct sctp_tagblock *twait_block;
4326 (void)SCTP_GETTIME_TIMEVAL(&now);
4327 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4329 if (!LIST_EMPTY(chain)) {
4330 /* Block(s) present, lets find space, and expire on the fly */
4331 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4332 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4333 if ((twait_block->vtag_block[i].v_tag == 0) &&
4335 twait_block->vtag_block[i].tv_sec_at_expire =
4337 twait_block->vtag_block[i].v_tag = tag;
4338 twait_block->vtag_block[i].lport = lport;
4339 twait_block->vtag_block[i].rport = rport;
4341 } else if ((twait_block->vtag_block[i].v_tag) &&
4342 ((long)twait_block->vtag_block[i].tv_sec_at_expire < now.tv_sec)) {
4343 /* Audit expires this guy */
4344 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4345 twait_block->vtag_block[i].v_tag = 0;
4346 twait_block->vtag_block[i].lport = 0;
4347 twait_block->vtag_block[i].rport = 0;
4349 /* Reuse it for my new tag */
4350 twait_block->vtag_block[i].tv_sec_at_expire = now.tv_sec + time;
4351 twait_block->vtag_block[i].v_tag = tag;
4352 twait_block->vtag_block[i].lport = lport;
4353 twait_block->vtag_block[i].rport = rport;
4360 * We only do up to the block where we can
4361 * place our tag for audits
4367 /* Need to add a new block to chain */
4369 SCTP_MALLOC(twait_block, struct sctp_tagblock *,
4370 sizeof(struct sctp_tagblock), SCTP_M_TIMW);
4371 if (twait_block == NULL) {
4373 panic("Can not alloc tagblock");
4377 memset(twait_block, 0, sizeof(struct sctp_tagblock));
4378 LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock);
4379 twait_block->vtag_block[0].tv_sec_at_expire = now.tv_sec + time;
4380 twait_block->vtag_block[0].v_tag = tag;
4381 twait_block->vtag_block[0].lport = lport;
4382 twait_block->vtag_block[0].rport = rport;
4388 sctp_iterator_asoc_being_freed(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
4390 struct sctp_iterator *it;
4393 * Unlock the tcb lock we do this so we avoid a dead lock scenario
4394 * where the iterator is waiting on the TCB lock and the TCB lock is
4395 * waiting on the iterator lock.
4397 it = stcb->asoc.stcb_starting_point_for_iterator;
4401 if (it->inp != stcb->sctp_ep) {
4402 /* hmm, focused on the wrong one? */
4405 if (it->stcb != stcb) {
4408 it->stcb = LIST_NEXT(stcb, sctp_tcblist);
4409 if (it->stcb == NULL) {
4410 /* done with all asoc's in this assoc */
4411 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
4414 it->inp = LIST_NEXT(inp, sctp_list);
4421 * Free the association after un-hashing the remote port. This
4422 * function ALWAYS returns holding NO LOCK on the stcb. It DOES
4423 * expect that the input to this function IS a locked TCB.
4424 * It will return 0, if it did NOT destroy the association (instead
4425 * it unlocks it. It will return NON-zero if it either destroyed the
4426 * association OR the association is already destroyed.
4429 sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
4432 struct sctp_association *asoc;
4433 struct sctp_nets *net, *prev;
4434 struct sctp_laddr *laddr;
4435 struct sctp_tmit_chunk *chk;
4436 struct sctp_asconf_addr *aparam;
4437 struct sctp_asconf_ack *aack;
4438 struct sctp_stream_reset_list *liste;
4439 struct sctp_queued_to_read *sq;
4440 struct sctp_stream_queue_pending *sp;
4441 sctp_sharedkey_t *shared_key;
4446 /* first, lets purge the entry from the hash table. */
4448 #ifdef SCTP_LOG_CLOSING
4449 sctp_log_closing(inp, stcb, 6);
4451 if (stcb->asoc.state == 0) {
4452 #ifdef SCTP_LOG_CLOSING
4453 sctp_log_closing(inp, NULL, 7);
4455 /* there is no asoc, really TSNH :-0 */
4459 if (stcb->freed_from_where == 0) {
4460 /* Only record the first place free happened from */
4461 stcb->freed_from_where = from_location;
4466 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4467 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4468 /* nothing around */
4471 so = inp->sctp_socket;
4474 * We used timer based freeing if a reader or writer is in the way.
4475 * So we first check if we are actually being called from a timer,
4476 * if so we abort early if a reader or writer is still in the way.
4478 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
4479 (from_inpcbfree == SCTP_NORMAL_PROC)) {
4481 * is it the timer driving us? if so are the reader/writers
4484 if (stcb->asoc.refcnt) {
4485 /* nope, reader or writer in the way */
4486 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4487 /* no asoc destroyed */
4488 SCTP_TCB_UNLOCK(stcb);
4489 #ifdef SCTP_LOG_CLOSING
4490 sctp_log_closing(inp, stcb, 8);
4495 /* now clean up any other timers */
4496 (void)SCTP_OS_TIMER_STOP(&asoc->hb_timer.timer);
4497 asoc->hb_timer.self = NULL;
4498 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4499 asoc->dack_timer.self = NULL;
4500 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4502 * For stream reset we don't blast this unless
4503 * it is a str-reset timer, it might be the
4504 * free-asoc timer which we DON'T want to
4507 if (asoc->strreset_timer.type == SCTP_TIMER_TYPE_STRRESET)
4508 asoc->strreset_timer.self = NULL;
4509 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4510 asoc->asconf_timer.self = NULL;
4511 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4512 asoc->autoclose_timer.self = NULL;
4513 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4514 asoc->shut_guard_timer.self = NULL;
4515 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4516 asoc->delayed_event_timer.self = NULL;
4517 /* Mobility adaptation */
4518 (void)SCTP_OS_TIMER_STOP(&asoc->delete_prim_timer.timer);
4519 asoc->delete_prim_timer.self = NULL;
4520 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4521 (void)SCTP_OS_TIMER_STOP(&net->fr_timer.timer);
4522 net->fr_timer.self = NULL;
4523 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4524 net->rxt_timer.self = NULL;
4525 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4526 net->pmtu_timer.self = NULL;
4528 /* Now the read queue needs to be cleaned up (only once) */
4530 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) {
4531 stcb->asoc.state |= SCTP_STATE_ABOUT_TO_BE_FREED;
4532 SCTP_INP_READ_LOCK(inp);
4533 TAILQ_FOREACH(sq, &inp->read_queue, next) {
4534 if (sq->stcb == stcb) {
4535 sq->do_not_ref_stcb = 1;
4536 sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
4538 * If there is no end, there never will be
4541 if (sq->end_added == 0) {
4542 /* Held for PD-API clear that. */
4543 sq->pdapi_aborted = 1;
4544 sq->held_length = 0;
4545 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) {
4547 * Need to add a PD-API
4548 * aborted indication.
4549 * Setting the control_pdapi
4550 * assures that it will be
4551 * added right after this
4556 stcb->asoc.control_pdapi = sq;
4557 strseq = (sq->sinfo_stream << 16) | sq->sinfo_ssn;
4558 sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION,
4560 SCTP_PARTIAL_DELIVERY_ABORTED,
4563 stcb->asoc.control_pdapi = NULL;
4566 /* Add an end to wake them */
4571 SCTP_INP_READ_UNLOCK(inp);
4572 if (stcb->block_entry) {
4574 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET);
4575 stcb->block_entry->error = ECONNRESET;
4576 stcb->block_entry = NULL;
4579 if (stcb->asoc.refcnt) {
4581 * reader or writer in the way, we have hopefully given him
4582 * something to chew on above.
4584 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4585 SCTP_TCB_UNLOCK(stcb);
4586 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4587 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4588 /* nothing around */
4591 /* Wake any reader/writers */
4592 sctp_sorwakeup(inp, so);
4593 sctp_sowwakeup(inp, so);
4595 #ifdef SCTP_LOG_CLOSING
4596 sctp_log_closing(inp, stcb, 9);
4598 /* no asoc destroyed */
4601 #ifdef SCTP_LOG_CLOSING
4602 sctp_log_closing(inp, stcb, 10);
4605 * When I reach here, no others want to kill the assoc yet.. and I
4606 * own the lock. Now its possible an abort comes in when I do the
4607 * lock exchange below to grab all the locks to do the final take
4608 * out. to prevent this we increment the count, which will start a
4609 * timer and blow out above thus assuring us that we hold exclusive
4610 * killing of the asoc. Note that after getting back the TCB lock we
4611 * will go ahead and increment the counter back up and stop any
4612 * timer a passing stranger may have started :-S
4614 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4615 atomic_add_int(&stcb->asoc.refcnt, 1);
4617 SCTP_TCB_UNLOCK(stcb);
4619 SCTP_ITERATOR_LOCK();
4620 SCTP_INP_INFO_WLOCK();
4621 SCTP_INP_WLOCK(inp);
4622 SCTP_TCB_LOCK(stcb);
4624 /* Double check the GONE flag */
4625 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4626 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4627 /* nothing around */
4630 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
4631 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4633 * For TCP type we need special handling when we are
4634 * connected. We also include the peel'ed off ones to.
4636 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4637 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED;
4638 inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED;
4641 if (so->so_rcv.sb_cc == 0) {
4642 so->so_state &= ~(SS_ISCONNECTING |
4643 SS_ISDISCONNECTING |
4649 sctp_sowwakeup(inp, so);
4650 sctp_sorwakeup(inp, so);
4656 * Make it invalid too, that way if its about to run it will abort
4659 sctp_iterator_asoc_being_freed(inp, stcb);
4660 /* re-increment the lock */
4661 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4662 atomic_add_int(&stcb->asoc.refcnt, -1);
4665 if (inp->sctp_tcbhash) {
4666 LIST_REMOVE(stcb, sctp_tcbhash);
4668 if (stcb->asoc.in_asocid_hash) {
4669 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4671 /* Now lets remove it from the list of ALL associations in the EP */
4672 LIST_REMOVE(stcb, sctp_tcblist);
4673 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4674 SCTP_INP_INCR_REF(inp);
4675 SCTP_INP_WUNLOCK(inp);
4676 SCTP_ITERATOR_UNLOCK();
4678 /* pull from vtag hash */
4679 LIST_REMOVE(stcb, sctp_asocs);
4680 sctp_add_vtag_to_timewait(asoc->my_vtag, SCTP_BASE_SYSCTL(sctp_vtag_time_wait),
4681 inp->sctp_lport, stcb->rport);
4684 * Now restop the timers to be sure this is paranoia at is finest!
4686 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4687 (void)SCTP_OS_TIMER_STOP(&asoc->hb_timer.timer);
4688 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4689 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4690 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4691 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4692 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4693 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4694 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4695 (void)SCTP_OS_TIMER_STOP(&net->fr_timer.timer);
4696 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4697 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4700 asoc->strreset_timer.type = SCTP_TIMER_TYPE_NONE;
4703 * The chunk lists and such SHOULD be empty but we check them just
4706 /* anything on the wheel needs to be removed */
4707 for (i = 0; i < asoc->streamoutcnt; i++) {
4708 struct sctp_stream_out *outs;
4710 outs = &asoc->strmout[i];
4711 /* now clean up any chunks here */
4712 sp = TAILQ_FIRST(&outs->outqueue);
4714 TAILQ_REMOVE(&outs->outqueue, sp, next);
4716 sctp_m_freem(sp->data);
4718 sp->tail_mbuf = NULL;
4720 sctp_free_remote_addr(sp->net);
4721 sctp_free_spbufspace(stcb, asoc, sp);
4722 if (sp->holds_key_ref)
4723 sctp_auth_key_release(stcb, sp->auth_keyid);
4724 /* Free the zone stuff */
4725 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_strmoq), sp);
4726 SCTP_DECR_STRMOQ_COUNT();
4727 /* sa_ignore FREED_MEMORY */
4728 sp = TAILQ_FIRST(&outs->outqueue);
4732 /* sa_ignore FREED_MEMORY */
4733 while ((liste = TAILQ_FIRST(&asoc->resetHead)) != NULL) {
4734 TAILQ_REMOVE(&asoc->resetHead, liste, next_resp);
4735 SCTP_FREE(liste, SCTP_M_STRESET);
4738 sq = TAILQ_FIRST(&asoc->pending_reply_queue);
4740 TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
4742 sctp_m_freem(sq->data);
4745 sctp_free_remote_addr(sq->whoFrom);
4748 /* Free the ctl entry */
4749 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
4750 SCTP_DECR_READQ_COUNT();
4751 /* sa_ignore FREED_MEMORY */
4752 sq = TAILQ_FIRST(&asoc->pending_reply_queue);
4755 chk = TAILQ_FIRST(&asoc->free_chunks);
4757 TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next);
4759 sctp_m_freem(chk->data);
4762 if (chk->holds_key_ref)
4763 sctp_auth_key_release(stcb, chk->auth_keyid);
4765 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4766 SCTP_DECR_CHK_COUNT();
4767 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1);
4768 asoc->free_chunk_cnt--;
4769 /* sa_ignore FREED_MEMORY */
4770 chk = TAILQ_FIRST(&asoc->free_chunks);
4772 /* pending send queue SHOULD be empty */
4773 if (!TAILQ_EMPTY(&asoc->send_queue)) {
4774 chk = TAILQ_FIRST(&asoc->send_queue);
4776 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
4778 sctp_m_freem(chk->data);
4781 if (chk->holds_key_ref)
4782 sctp_auth_key_release(stcb, chk->auth_keyid);
4784 sctp_free_remote_addr(chk->whoTo);
4785 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4786 SCTP_DECR_CHK_COUNT();
4787 /* sa_ignore FREED_MEMORY */
4788 chk = TAILQ_FIRST(&asoc->send_queue);
4793 printf("Freed %d from send_queue\n", ccnt);
4797 /* sent queue SHOULD be empty */
4798 if (!TAILQ_EMPTY(&asoc->sent_queue)) {
4799 chk = TAILQ_FIRST(&asoc->sent_queue);
4801 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
4803 sctp_m_freem(chk->data);
4806 if (chk->holds_key_ref)
4807 sctp_auth_key_release(stcb, chk->auth_keyid);
4809 sctp_free_remote_addr(chk->whoTo);
4810 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4811 SCTP_DECR_CHK_COUNT();
4812 /* sa_ignore FREED_MEMORY */
4813 chk = TAILQ_FIRST(&asoc->sent_queue);
4818 printf("Freed %d from sent_queue\n", ccnt);
4822 /* control queue MAY not be empty */
4823 if (!TAILQ_EMPTY(&asoc->control_send_queue)) {
4824 chk = TAILQ_FIRST(&asoc->control_send_queue);
4826 TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next);
4828 sctp_m_freem(chk->data);
4831 if (chk->holds_key_ref)
4832 sctp_auth_key_release(stcb, chk->auth_keyid);
4834 sctp_free_remote_addr(chk->whoTo);
4835 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4836 SCTP_DECR_CHK_COUNT();
4837 /* sa_ignore FREED_MEMORY */
4838 chk = TAILQ_FIRST(&asoc->control_send_queue);
4843 printf("Freed %d from ctrl_queue\n", ccnt);
4848 /* ASCONF queue MAY not be empty */
4849 if (!TAILQ_EMPTY(&asoc->asconf_send_queue)) {
4850 chk = TAILQ_FIRST(&asoc->asconf_send_queue);
4852 TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next);
4854 sctp_m_freem(chk->data);
4857 if (chk->holds_key_ref)
4858 sctp_auth_key_release(stcb, chk->auth_keyid);
4860 sctp_free_remote_addr(chk->whoTo);
4861 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4862 SCTP_DECR_CHK_COUNT();
4863 /* sa_ignore FREED_MEMORY */
4864 chk = TAILQ_FIRST(&asoc->asconf_send_queue);
4869 printf("Freed %d from asconf_queue\n", ccnt);
4873 if (!TAILQ_EMPTY(&asoc->reasmqueue)) {
4874 chk = TAILQ_FIRST(&asoc->reasmqueue);
4876 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
4878 sctp_m_freem(chk->data);
4881 if (chk->holds_key_ref)
4882 sctp_auth_key_release(stcb, chk->auth_keyid);
4883 sctp_free_remote_addr(chk->whoTo);
4885 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4886 SCTP_DECR_CHK_COUNT();
4887 /* sa_ignore FREED_MEMORY */
4888 chk = TAILQ_FIRST(&asoc->reasmqueue);
4893 printf("Freed %d from reasm_queue\n", ccnt);
4897 if (asoc->mapping_array) {
4898 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4899 asoc->mapping_array = NULL;
4901 if (asoc->nr_mapping_array) {
4902 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4903 asoc->nr_mapping_array = NULL;
4905 /* the stream outs */
4906 if (asoc->strmout) {
4907 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4908 asoc->strmout = NULL;
4910 asoc->strm_realoutsize = asoc->streamoutcnt = 0;
4912 struct sctp_queued_to_read *ctl;
4914 for (i = 0; i < asoc->streamincnt; i++) {
4915 if (!TAILQ_EMPTY(&asoc->strmin[i].inqueue)) {
4916 /* We have somethings on the streamin queue */
4917 ctl = TAILQ_FIRST(&asoc->strmin[i].inqueue);
4919 TAILQ_REMOVE(&asoc->strmin[i].inqueue,
4921 sctp_free_remote_addr(ctl->whoFrom);
4923 sctp_m_freem(ctl->data);
4927 * We don't free the address here
4928 * since all the net's were freed
4931 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
4932 SCTP_DECR_READQ_COUNT();
4933 ctl = TAILQ_FIRST(&asoc->strmin[i].inqueue);
4937 SCTP_FREE(asoc->strmin, SCTP_M_STRMI);
4938 asoc->strmin = NULL;
4940 asoc->streamincnt = 0;
4941 while (!TAILQ_EMPTY(&asoc->nets)) {
4942 /* sa_ignore FREED_MEMORY */
4943 net = TAILQ_FIRST(&asoc->nets);
4944 /* pull from list */
4945 if ((SCTP_BASE_INFO(ipi_count_raddr) == 0) || (prev == net)) {
4947 panic("no net's left alloc'ed, or list points to itself");
4952 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4953 sctp_free_remote_addr(net);
4956 while (!LIST_EMPTY(&asoc->sctp_restricted_addrs)) {
4957 /* sa_ignore FREED_MEMORY */
4958 laddr = LIST_FIRST(&asoc->sctp_restricted_addrs);
4959 sctp_remove_laddr(laddr);
4962 /* pending asconf (address) parameters */
4963 while (!TAILQ_EMPTY(&asoc->asconf_queue)) {
4964 /* sa_ignore FREED_MEMORY */
4965 aparam = TAILQ_FIRST(&asoc->asconf_queue);
4966 TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
4967 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
4969 while (!TAILQ_EMPTY(&asoc->asconf_ack_sent)) {
4970 /* sa_ignore FREED_MEMORY */
4971 aack = TAILQ_FIRST(&asoc->asconf_ack_sent);
4972 TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
4973 if (aack->data != NULL) {
4974 sctp_m_freem(aack->data);
4976 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
4978 /* clean up auth stuff */
4979 if (asoc->local_hmacs)
4980 sctp_free_hmaclist(asoc->local_hmacs);
4981 if (asoc->peer_hmacs)
4982 sctp_free_hmaclist(asoc->peer_hmacs);
4984 if (asoc->local_auth_chunks)
4985 sctp_free_chunklist(asoc->local_auth_chunks);
4986 if (asoc->peer_auth_chunks)
4987 sctp_free_chunklist(asoc->peer_auth_chunks);
4989 sctp_free_authinfo(&asoc->authinfo);
4991 shared_key = LIST_FIRST(&asoc->shared_keys);
4992 while (shared_key) {
4993 LIST_REMOVE(shared_key, next);
4994 sctp_free_sharedkey(shared_key);
4995 /* sa_ignore FREED_MEMORY */
4996 shared_key = LIST_FIRST(&asoc->shared_keys);
4999 /* Insert new items here :> */
5001 /* Get rid of LOCK */
5002 SCTP_TCB_LOCK_DESTROY(stcb);
5003 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
5004 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5005 SCTP_INP_INFO_WUNLOCK();
5006 SCTP_INP_RLOCK(inp);
5008 #ifdef SCTP_TRACK_FREED_ASOCS
5009 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5010 /* now clean up the tasoc itself */
5011 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5012 SCTP_DECR_ASOC_COUNT();
5014 LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist);
5017 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5018 SCTP_DECR_ASOC_COUNT();
5020 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5021 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5023 * If its NOT the inp_free calling us AND sctp_close
5024 * as been called, we call back...
5026 SCTP_INP_RUNLOCK(inp);
5028 * This will start the kill timer (if we are the
5029 * lastone) since we hold an increment yet. But this
5030 * is the only safe way to do this since otherwise
5031 * if the socket closes at the same time we are here
5032 * we might collide in the cleanup.
5034 sctp_inpcb_free(inp,
5035 SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
5036 SCTP_CALLED_DIRECTLY_NOCMPSET);
5037 SCTP_INP_DECR_REF(inp);
5040 /* The socket is still open. */
5041 SCTP_INP_DECR_REF(inp);
5044 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5045 SCTP_INP_RUNLOCK(inp);
5048 /* destroyed the asoc */
5049 #ifdef SCTP_LOG_CLOSING
5050 sctp_log_closing(inp, NULL, 11);
5058 * determine if a destination is "reachable" based upon the addresses bound
5059 * to the current endpoint (e.g. only v4 or v6 currently bound)
5062 * FIX: if we allow assoc-level bindx(), then this needs to be fixed to use
5063 * assoc level v4/v6 flags, as the assoc *may* not have the same address
5064 * types bound as its endpoint
5067 sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
5069 struct sctp_inpcb *inp;
5073 * No locks here, the TCB, in all cases is already locked and an
5074 * assoc is up. There is either a INP lock by the caller applied (in
5075 * asconf case when deleting an address) or NOT in the HB case,
5076 * however if HB then the INP increment is up and the INP will not
5077 * be removed (on top of the fact that we have a TCB lock). So we
5078 * only want to read the sctp_flags, which is either bound-all or
5079 * not.. no protection needed since once an assoc is up you can't be
5080 * changing your binding.
5082 inp = stcb->sctp_ep;
5083 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5084 /* if bound all, destination is not restricted */
5086 * RRS: Question during lock work: Is this correct? If you
5087 * are bound-all you still might need to obey the V4--V6
5088 * flags??? IMO this bound-all stuff needs to be removed!
5092 /* NOTE: all "scope" checks are done when local addresses are added */
5093 if (destaddr->sa_family == AF_INET6) {
5094 answer = inp->ip_inp.inp.inp_vflag & INP_IPV6;
5095 } else if (destaddr->sa_family == AF_INET) {
5096 answer = inp->ip_inp.inp.inp_vflag & INP_IPV4;
5098 /* invalid family, so it's unreachable */
5105 * update the inp_vflags on an endpoint
5108 sctp_update_ep_vflag(struct sctp_inpcb *inp)
5110 struct sctp_laddr *laddr;
5112 /* first clear the flag */
5113 inp->ip_inp.inp.inp_vflag = 0;
5114 /* set the flag based on addresses on the ep list */
5115 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5116 if (laddr->ifa == NULL) {
5117 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
5121 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
5124 if (laddr->ifa->address.sa.sa_family == AF_INET6) {
5125 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5126 } else if (laddr->ifa->address.sa.sa_family == AF_INET) {
5127 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5133 * Add the address to the endpoint local address list There is nothing to be
5134 * done if we are bound to all addresses
5137 sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
5139 struct sctp_laddr *laddr;
5144 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5145 /* You are already bound to all. You have it already */
5148 if (ifa->address.sa.sa_family == AF_INET6) {
5149 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5150 /* Can't bind a non-useable addr. */
5154 /* first, is it already present? */
5155 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5156 if (laddr->ifa == ifa) {
5163 /* Not in the ep list */
5164 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action);
5168 /* update inp_vflag flags */
5169 if (ifa->address.sa.sa_family == AF_INET6) {
5170 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5171 } else if (ifa->address.sa.sa_family == AF_INET) {
5172 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5180 * select a new (hopefully reachable) destination net (should only be used
5181 * when we deleted an ep addr that is the only usable source address to reach
5182 * the destination net)
5185 sctp_select_primary_destination(struct sctp_tcb *stcb)
5187 struct sctp_nets *net;
5189 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5190 /* for now, we'll just pick the first reachable one we find */
5191 if (net->dest_state & SCTP_ADDR_UNCONFIRMED)
5193 if (sctp_destination_is_reachable(stcb,
5194 (struct sockaddr *)&net->ro._l_addr)) {
5195 /* found a reachable destination */
5196 stcb->asoc.primary_destination = net;
5199 /* I can't there from here! ...we're gonna die shortly... */
5204 * Delete the address from the endpoint local address list There is nothing
5205 * to be done if we are bound to all addresses
5208 sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa)
5210 struct sctp_laddr *laddr;
5214 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5215 /* You are already bound to all. You have it already */
5218 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5219 if (laddr->ifa == ifa) {
5224 if (fnd && (inp->laddr_count < 2)) {
5225 /* can't delete unless there are at LEAST 2 addresses */
5230 * clean up any use of this address go through our
5231 * associations and clear any last_used_address that match
5232 * this one for each assoc, see if a new primary_destination
5235 struct sctp_tcb *stcb;
5237 /* clean up "next_addr_touse" */
5238 if (inp->next_addr_touse == laddr)
5239 /* delete this address */
5240 inp->next_addr_touse = NULL;
5242 /* clean up "last_used_address" */
5243 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5244 struct sctp_nets *net;
5246 SCTP_TCB_LOCK(stcb);
5247 if (stcb->asoc.last_used_address == laddr)
5248 /* delete this address */
5249 stcb->asoc.last_used_address = NULL;
5251 * Now spin through all the nets and purge any ref
5254 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5255 if (net->ro._s_addr &&
5256 (net->ro._s_addr->ifa == laddr->ifa)) {
5257 /* Yep, purge src address selected */
5260 /* delete this address if cached */
5264 net->ro.ro_rt = NULL;
5266 sctp_free_ifa(net->ro._s_addr);
5267 net->ro._s_addr = NULL;
5268 net->src_addr_selected = 0;
5271 SCTP_TCB_UNLOCK(stcb);
5272 } /* for each tcb */
5273 /* remove it from the ep list */
5274 sctp_remove_laddr(laddr);
5276 /* update inp_vflag flags */
5277 sctp_update_ep_vflag(inp);
5283 * Add the address to the TCB local address restricted list.
5284 * This is a "pending" address list (eg. addresses waiting for an
5285 * ASCONF-ACK response) and cannot be used as a valid source address.
5288 sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5290 struct sctp_inpcb *inp;
5291 struct sctp_laddr *laddr;
5292 struct sctpladdr *list;
5295 * Assumes TCB is locked.. and possibly the INP. May need to
5296 * confirm/fix that if we need it and is not the case.
5298 list = &stcb->asoc.sctp_restricted_addrs;
5300 inp = stcb->sctp_ep;
5301 if (ifa->address.sa.sa_family == AF_INET6) {
5302 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5303 /* Can't bind a non-existent addr. */
5307 /* does the address already exist? */
5308 LIST_FOREACH(laddr, list, sctp_nxt_addr) {
5309 if (laddr->ifa == ifa) {
5314 /* add to the list */
5315 (void)sctp_insert_laddr(list, ifa, 0);
5320 * insert an laddr entry with the given ifa for the desired list
5323 sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
5325 struct sctp_laddr *laddr;
5327 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
5328 if (laddr == NULL) {
5329 /* out of memory? */
5330 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
5333 SCTP_INCR_LADDR_COUNT();
5334 bzero(laddr, sizeof(*laddr));
5335 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
5337 laddr->action = act;
5338 atomic_add_int(&ifa->refcount, 1);
5340 LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr);
5346 * Remove an laddr entry from the local address list (on an assoc)
5349 sctp_remove_laddr(struct sctp_laddr *laddr)
5352 /* remove from the list */
5353 LIST_REMOVE(laddr, sctp_nxt_addr);
5354 sctp_free_ifa(laddr->ifa);
5355 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr);
5356 SCTP_DECR_LADDR_COUNT();
5360 * Remove a local address from the TCB local address restricted list
5363 sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5365 struct sctp_inpcb *inp;
5366 struct sctp_laddr *laddr;
5369 * This is called by asconf work. It is assumed that a) The TCB is
5370 * locked and b) The INP is locked. This is true in as much as I can
5371 * trace through the entry asconf code where I did these locks.
5372 * Again, the ASCONF code is a bit different in that it does lock
5373 * the INP during its work often times. This must be since we don't
5374 * want other proc's looking up things while what they are looking
5375 * up is changing :-D
5378 inp = stcb->sctp_ep;
5379 /* if subset bound and don't allow ASCONF's, can't delete last */
5380 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
5381 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
5382 if (stcb->sctp_ep->laddr_count < 2) {
5383 /* can't delete last address */
5387 LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
5388 /* remove the address if it exists */
5389 if (laddr->ifa == NULL)
5391 if (laddr->ifa == ifa) {
5392 sctp_remove_laddr(laddr);
5397 /* address not found! */
5402 * Temporarily remove for __APPLE__ until we use the Tiger equivalents
5405 static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;
5406 static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR;
5412 * SCTP initialization for the PCB structures should be called by
5413 * the sctp_init() funciton.
5418 if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) {
5419 /* error I was called twice */
5422 SCTP_BASE_VAR(sctp_pcb_initialized) = 1;
5424 #if defined(SCTP_LOCAL_TRACE_BUF)
5425 bzero(&SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));
5427 (void)SCTP_GETTIME_TIMEVAL(&tv);
5428 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5429 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t) tv.tv_sec;
5430 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t) tv.tv_usec;
5432 SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t) tv.tv_sec;
5433 SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t) tv.tv_usec;
5435 /* init the empty list of (All) Endpoints */
5436 LIST_INIT(&SCTP_BASE_INFO(listhead));
5438 /* init the iterator head */
5439 TAILQ_INIT(&SCTP_BASE_INFO(iteratorhead));
5441 /* init the hash table of endpoints */
5442 TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize));
5443 TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize));
5444 TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale));
5445 SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31),
5446 &SCTP_BASE_INFO(hashasocmark));
5447 SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5448 &SCTP_BASE_INFO(hashmark));
5449 SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5450 &SCTP_BASE_INFO(hashtcpmark));
5451 SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize);
5454 SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH,
5455 &SCTP_BASE_INFO(hashvrfmark));
5457 SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE,
5458 &SCTP_BASE_INFO(vrf_ifn_hashmark));
5459 /* init the zones */
5461 * FIX ME: Should check for NULL returns, but if it does fail we are
5462 * doomed to panic anyways... add later maybe.
5464 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep",
5465 sizeof(struct sctp_inpcb), maxsockets);
5467 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc",
5468 sizeof(struct sctp_tcb), sctp_max_number_of_assoc);
5470 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr",
5471 sizeof(struct sctp_laddr),
5472 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5474 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr",
5475 sizeof(struct sctp_nets),
5476 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5478 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk",
5479 sizeof(struct sctp_tmit_chunk),
5480 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5482 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq",
5483 sizeof(struct sctp_queued_to_read),
5484 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5486 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out",
5487 sizeof(struct sctp_stream_queue_pending),
5488 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5490 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf",
5491 sizeof(struct sctp_asconf),
5492 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5494 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack",
5495 sizeof(struct sctp_asconf_ack),
5496 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5499 /* Master Lock INIT for info structure */
5500 SCTP_INP_INFO_LOCK_INIT();
5501 SCTP_STATLOG_INIT_LOCK();
5502 SCTP_ITERATOR_LOCK_INIT();
5504 SCTP_IPI_COUNT_INIT();
5505 SCTP_IPI_ADDR_INIT();
5506 SCTP_IPI_ITERATOR_WQ_INIT();
5507 #ifdef SCTP_PACKET_LOGGING
5508 SCTP_IP_PKTLOG_INIT();
5510 LIST_INIT(&SCTP_BASE_INFO(addr_wq));
5512 /* not sure if we need all the counts */
5513 SCTP_BASE_INFO(ipi_count_ep) = 0;
5514 /* assoc/tcb zone info */
5515 SCTP_BASE_INFO(ipi_count_asoc) = 0;
5516 /* local addrlist zone info */
5517 SCTP_BASE_INFO(ipi_count_laddr) = 0;
5518 /* remote addrlist zone info */
5519 SCTP_BASE_INFO(ipi_count_raddr) = 0;
5521 SCTP_BASE_INFO(ipi_count_chunk) = 0;
5523 /* socket queue zone info */
5524 SCTP_BASE_INFO(ipi_count_readq) = 0;
5526 /* stream out queue cont */
5527 SCTP_BASE_INFO(ipi_count_strmoq) = 0;
5529 SCTP_BASE_INFO(ipi_free_strmoq) = 0;
5530 SCTP_BASE_INFO(ipi_free_chunks) = 0;
5532 SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer));
5534 /* Init the TIMEWAIT list */
5535 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5536 LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]);
5539 #if defined(SCTP_USE_THREAD_BASED_ITERATOR)
5540 SCTP_BASE_INFO(iterator_running) = 0;
5541 SCTP_BASE_INFO(threads_must_exit) = 0;
5542 sctp_startup_iterator();
5546 * INIT the default VRF which for BSD is the only one, other O/S's
5547 * may have more. But initially they must start with one and then
5548 * add the VRF's as addresses are added.
5550 sctp_init_vrf_list(SCTP_DEFAULT_VRF);
5555 * Assumes that the SCTP_BASE_INFO() lock is NOT held.
5558 sctp_pcb_finish(void)
5560 struct sctp_vrflist *vrf_bucket;
5561 struct sctp_vrf *vrf;
5562 struct sctp_ifn *ifn;
5563 struct sctp_ifa *ifa;
5564 struct sctpvtaghead *chain;
5565 struct sctp_tagblock *twait_block, *prev_twait_block;
5566 struct sctp_laddr *wi;
5567 struct sctp_iterator *it;
5570 #if defined(SCTP_USE_THREAD_BASED_ITERATOR)
5571 SCTP_BASE_INFO(threads_must_exit) = 1;
5572 /* Wake the thread up so it will exit now */
5573 sctp_wakeup_iterator();
5576 SCTP_OS_TIMER_STOP(&SCTP_BASE_INFO(addr_wq_timer.timer));
5577 SCTP_IPI_ITERATOR_WQ_LOCK();
5578 while ((wi = LIST_FIRST(&SCTP_BASE_INFO(addr_wq))) != NULL) {
5579 LIST_REMOVE(wi, sctp_nxt_addr);
5580 SCTP_DECR_LADDR_COUNT();
5581 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi);
5583 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5584 while ((it = TAILQ_FIRST(&SCTP_BASE_INFO(iteratorhead))) != NULL) {
5585 if (it->function_atend != NULL) {
5586 (*it->function_atend) (it->pointer, it->val);
5588 TAILQ_REMOVE(&SCTP_BASE_INFO(iteratorhead), it, sctp_nxt_itr);
5589 SCTP_FREE(it, SCTP_M_ITER);
5593 * free the vrf/ifn/ifa lists and hashes (be sure address monitor is
5596 vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))];
5597 while ((vrf = LIST_FIRST(vrf_bucket)) != NULL) {
5598 while ((ifn = LIST_FIRST(&vrf->ifnlist)) != NULL) {
5599 while ((ifa = LIST_FIRST(&ifn->ifalist)) != NULL) {
5601 LIST_REMOVE(ifa, next_bucket);
5602 LIST_REMOVE(ifa, next_ifa);
5603 SCTP_FREE(ifa, SCTP_M_IFA);
5606 LIST_REMOVE(ifn, next_bucket);
5607 LIST_REMOVE(ifn, next_ifn);
5608 SCTP_FREE(ifn, SCTP_M_IFN);
5610 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
5612 LIST_REMOVE(vrf, next_vrf);
5613 SCTP_FREE(vrf, SCTP_M_VRF);
5615 /* free the vrf hashes */
5616 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark));
5617 SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark));
5620 * free the TIMEWAIT list elements malloc'd in the function
5621 * sctp_add_vtag_to_timewait()...
5623 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5624 chain = &SCTP_BASE_INFO(vtag_timewait)[i];
5625 if (!LIST_EMPTY(chain)) {
5626 prev_twait_block = NULL;
5627 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
5628 if (prev_twait_block) {
5629 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
5631 prev_twait_block = twait_block;
5633 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
5637 /* free the locks and mutexes */
5638 #ifdef SCTP_PACKET_LOGGING
5639 SCTP_IP_PKTLOG_DESTROY();
5641 SCTP_IPI_ADDR_DESTROY();
5642 SCTP_ITERATOR_LOCK_DESTROY();
5643 SCTP_STATLOG_DESTROY();
5644 SCTP_INP_INFO_LOCK_DESTROY();
5646 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep));
5647 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc));
5648 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr));
5649 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net));
5650 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk));
5651 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq));
5652 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq));
5653 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf));
5654 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack));
5655 /* Get rid of other stuff to */
5656 if (SCTP_BASE_INFO(sctp_asochash) != NULL)
5657 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark));
5658 if (SCTP_BASE_INFO(sctp_ephash) != NULL)
5659 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark));
5660 if (SCTP_BASE_INFO(sctp_tcpephash) != NULL)
5661 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark));
5667 sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m,
5668 int iphlen, int offset, int limit, struct sctphdr *sh,
5669 struct sockaddr *altsa)
5672 * grub through the INIT pulling addresses and loading them to the
5673 * nets structure in the asoc. The from address in the mbuf should
5674 * also be loaded (if it is not already). This routine can be called
5675 * with either INIT or INIT-ACK's as long as the m points to the IP
5676 * packet and the offset points to the beginning of the parameters.
5678 struct sctp_inpcb *inp, *l_inp;
5679 struct sctp_nets *net, *net_tmp;
5681 struct sctp_paramhdr *phdr, parm_buf;
5682 struct sctp_tcb *stcb_tmp;
5683 uint16_t ptype, plen;
5684 struct sockaddr *sa;
5685 struct sockaddr_storage dest_store;
5686 struct sockaddr *local_sa = (struct sockaddr *)&dest_store;
5687 struct sockaddr_in sin;
5688 struct sockaddr_in6 sin6;
5689 uint8_t random_store[SCTP_PARAM_BUFFER_SIZE];
5690 struct sctp_auth_random *p_random = NULL;
5691 uint16_t random_len = 0;
5692 uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE];
5693 struct sctp_auth_hmac_algo *hmacs = NULL;
5694 uint16_t hmacs_len = 0;
5695 uint8_t saw_asconf = 0;
5696 uint8_t saw_asconf_ack = 0;
5697 uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE];
5698 struct sctp_auth_chunk_list *chunks = NULL;
5699 uint16_t num_chunks = 0;
5700 sctp_key_t *new_key;
5702 int got_random = 0, got_hmacs = 0, got_chklist = 0;
5704 /* First get the destination address setup too. */
5705 memset(&sin, 0, sizeof(sin));
5706 memset(&sin6, 0, sizeof(sin6));
5708 sin.sin_family = AF_INET;
5709 sin.sin_len = sizeof(sin);
5710 sin.sin_port = stcb->rport;
5712 sin6.sin6_family = AF_INET6;
5713 sin6.sin6_len = sizeof(struct sockaddr_in6);
5714 sin6.sin6_port = stcb->rport;
5715 if (altsa == NULL) {
5716 iph = mtod(m, struct ip *);
5717 switch (iph->ip_v) {
5721 struct sockaddr_in *sin_2;
5723 sin_2 = (struct sockaddr_in *)(local_sa);
5724 memset(sin_2, 0, sizeof(sin));
5725 sin_2->sin_family = AF_INET;
5726 sin_2->sin_len = sizeof(sin);
5727 sin_2->sin_port = sh->dest_port;
5728 sin_2->sin_addr.s_addr = iph->ip_dst.s_addr;
5729 sin.sin_addr = iph->ip_src;
5730 sa = (struct sockaddr *)&sin;
5734 case IPV6_VERSION >> 4:
5737 struct ip6_hdr *ip6;
5738 struct sockaddr_in6 *sin6_2;
5740 ip6 = mtod(m, struct ip6_hdr *);
5741 sin6_2 = (struct sockaddr_in6 *)(local_sa);
5742 memset(sin6_2, 0, sizeof(sin6));
5743 sin6_2->sin6_family = AF_INET6;
5744 sin6_2->sin6_len = sizeof(struct sockaddr_in6);
5745 sin6_2->sin6_port = sh->dest_port;
5746 sin6.sin6_addr = ip6->ip6_src;
5747 sa = (struct sockaddr *)&sin6;
5757 * For cookies we use the src address NOT from the packet
5758 * but from the original INIT
5762 /* Turn off ECN until we get through all params */
5763 stcb->asoc.ecn_allowed = 0;
5764 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5765 /* mark all addresses that we have currently on the list */
5766 net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC;
5768 /* does the source address already exist? if so skip it */
5769 l_inp = inp = stcb->sctp_ep;
5771 atomic_add_int(&stcb->asoc.refcnt, 1);
5772 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, local_sa, stcb);
5773 atomic_add_int(&stcb->asoc.refcnt, -1);
5775 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) {
5776 /* we must add the source address */
5777 /* no scope set here since we have a tcb already. */
5778 if ((sa->sa_family == AF_INET) &&
5779 (stcb->asoc.ipv4_addr_legal)) {
5780 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) {
5783 } else if ((sa->sa_family == AF_INET6) &&
5784 (stcb->asoc.ipv6_addr_legal)) {
5785 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
5790 if (net_tmp != NULL && stcb_tmp == stcb) {
5791 net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC;
5792 } else if (stcb_tmp != stcb) {
5793 /* It belongs to another association? */
5795 SCTP_TCB_UNLOCK(stcb_tmp);
5799 if (stcb->asoc.state == 0) {
5800 /* the assoc was freed? */
5804 * peer must explicitly turn this on. This may have been initialized
5805 * to be "on" in order to allow local addr changes while INIT's are
5808 stcb->asoc.peer_supports_asconf = 0;
5809 /* now we must go through each of the params. */
5810 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
5812 ptype = ntohs(phdr->param_type);
5813 plen = ntohs(phdr->param_length);
5815 * printf("ptype => %0x, plen => %d\n", (uint32_t)ptype,
5818 if (offset + plen > limit) {
5824 if (ptype == SCTP_IPV4_ADDRESS) {
5825 if (stcb->asoc.ipv4_addr_legal) {
5826 struct sctp_ipv4addr_param *p4, p4_buf;
5828 /* ok get the v4 address and check/add */
5829 phdr = sctp_get_next_param(m, offset,
5830 (struct sctp_paramhdr *)&p4_buf,
5832 if (plen != sizeof(struct sctp_ipv4addr_param) ||
5836 p4 = (struct sctp_ipv4addr_param *)phdr;
5837 sin.sin_addr.s_addr = p4->addr;
5838 if (IN_MULTICAST(sin.sin_addr.s_addr)) {
5839 /* Skip multi-cast addresses */
5842 if ((sin.sin_addr.s_addr == INADDR_BROADCAST) ||
5843 (sin.sin_addr.s_addr == INADDR_ANY)) {
5846 sa = (struct sockaddr *)&sin;
5847 inp = stcb->sctp_ep;
5848 atomic_add_int(&stcb->asoc.refcnt, 1);
5849 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
5851 atomic_add_int(&stcb->asoc.refcnt, -1);
5853 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) ||
5855 /* we must add the source address */
5857 * no scope set since we have a tcb
5862 * we must validate the state again
5866 if (stcb->asoc.state == 0) {
5867 /* the assoc was freed? */
5870 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) {
5873 } else if (stcb_tmp == stcb) {
5874 if (stcb->asoc.state == 0) {
5875 /* the assoc was freed? */
5881 ~SCTP_ADDR_NOT_IN_ASSOC;
5885 * strange, address is in another
5886 * assoc? straighten out locks.
5889 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
5894 sctp_abort_an_association(stcb_tmp->sctp_ep,
5895 stcb_tmp, 1, NULL, 0);
5898 SCTP_TCB_UNLOCK(stcb_tmp);
5900 if (stcb->asoc.state == 0) {
5901 /* the assoc was freed? */
5907 } else if (ptype == SCTP_IPV6_ADDRESS) {
5908 if (stcb->asoc.ipv6_addr_legal) {
5909 /* ok get the v6 address and check/add */
5910 struct sctp_ipv6addr_param *p6, p6_buf;
5912 phdr = sctp_get_next_param(m, offset,
5913 (struct sctp_paramhdr *)&p6_buf,
5915 if (plen != sizeof(struct sctp_ipv6addr_param) ||
5919 p6 = (struct sctp_ipv6addr_param *)phdr;
5920 memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
5922 if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) {
5923 /* Skip multi-cast addresses */
5926 if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) {
5928 * Link local make no sense without
5933 sa = (struct sockaddr *)&sin6;
5934 inp = stcb->sctp_ep;
5935 atomic_add_int(&stcb->asoc.refcnt, 1);
5936 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
5938 atomic_add_int(&stcb->asoc.refcnt, -1);
5939 if (stcb_tmp == NULL &&
5940 (inp == stcb->sctp_ep || inp == NULL)) {
5942 * we must validate the state again
5946 if (stcb->asoc.state == 0) {
5947 /* the assoc was freed? */
5951 * we must add the address, no scope
5954 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) {
5957 } else if (stcb_tmp == stcb) {
5959 * we must validate the state again
5962 if (stcb->asoc.state == 0) {
5963 /* the assoc was freed? */
5969 ~SCTP_ADDR_NOT_IN_ASSOC;
5973 * strange, address is in another
5974 * assoc? straighten out locks.
5977 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
5982 sctp_abort_an_association(stcb_tmp->sctp_ep,
5983 stcb_tmp, 1, NULL, 0);
5986 SCTP_TCB_UNLOCK(stcb_tmp);
5988 if (stcb->asoc.state == 0) {
5989 /* the assoc was freed? */
5995 } else if (ptype == SCTP_ECN_CAPABLE) {
5996 stcb->asoc.ecn_allowed = 1;
5997 } else if (ptype == SCTP_ULP_ADAPTATION) {
5998 if (stcb->asoc.state != SCTP_STATE_OPEN) {
5999 struct sctp_adaptation_layer_indication ai,
6002 phdr = sctp_get_next_param(m, offset,
6003 (struct sctp_paramhdr *)&ai, sizeof(ai));
6004 aip = (struct sctp_adaptation_layer_indication *)phdr;
6006 stcb->asoc.peers_adaptation = ntohl(aip->indication);
6007 stcb->asoc.adaptation_needed = 1;
6010 } else if (ptype == SCTP_SET_PRIM_ADDR) {
6011 struct sctp_asconf_addr_param lstore, *fee;
6012 struct sctp_asconf_addrv4_param *fii;
6014 struct sockaddr *lsa = NULL;
6016 stcb->asoc.peer_supports_asconf = 1;
6017 if (plen > sizeof(lstore)) {
6020 phdr = sctp_get_next_param(m, offset,
6021 (struct sctp_paramhdr *)&lstore,
6022 min(plen, sizeof(lstore)));
6026 fee = (struct sctp_asconf_addr_param *)phdr;
6027 lptype = ntohs(fee->addrp.ph.param_type);
6028 if (lptype == SCTP_IPV4_ADDRESS) {
6030 sizeof(struct sctp_asconf_addrv4_param)) {
6031 SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n",
6032 (int)sizeof(struct sctp_asconf_addrv4_param),
6035 fii = (struct sctp_asconf_addrv4_param *)fee;
6036 sin.sin_addr.s_addr = fii->addrp.addr;
6037 lsa = (struct sockaddr *)&sin;
6039 } else if (lptype == SCTP_IPV6_ADDRESS) {
6041 sizeof(struct sctp_asconf_addr_param)) {
6042 SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n",
6043 (int)sizeof(struct sctp_asconf_addr_param),
6046 memcpy(sin6.sin6_addr.s6_addr,
6048 sizeof(fee->addrp.addr));
6049 lsa = (struct sockaddr *)&sin6;
6053 (void)sctp_set_primary_addr(stcb, sa, NULL);
6055 } else if (ptype == SCTP_HAS_NAT_SUPPORT) {
6056 stcb->asoc.peer_supports_nat = 1;
6057 } else if (ptype == SCTP_PRSCTP_SUPPORTED) {
6058 /* Peer supports pr-sctp */
6059 stcb->asoc.peer_supports_prsctp = 1;
6060 } else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) {
6061 /* A supported extension chunk */
6062 struct sctp_supported_chunk_types_param *pr_supported;
6063 uint8_t local_store[SCTP_PARAM_BUFFER_SIZE];
6066 phdr = sctp_get_next_param(m, offset,
6067 (struct sctp_paramhdr *)&local_store, min(sizeof(local_store), plen));
6071 stcb->asoc.peer_supports_asconf = 0;
6072 stcb->asoc.peer_supports_prsctp = 0;
6073 stcb->asoc.peer_supports_pktdrop = 0;
6074 stcb->asoc.peer_supports_strreset = 0;
6075 stcb->asoc.peer_supports_nr_sack = 0;
6076 stcb->asoc.peer_supports_auth = 0;
6077 pr_supported = (struct sctp_supported_chunk_types_param *)phdr;
6078 num_ent = plen - sizeof(struct sctp_paramhdr);
6079 for (i = 0; i < num_ent; i++) {
6080 switch (pr_supported->chunk_types[i]) {
6082 case SCTP_ASCONF_ACK:
6083 stcb->asoc.peer_supports_asconf = 1;
6085 case SCTP_FORWARD_CUM_TSN:
6086 stcb->asoc.peer_supports_prsctp = 1;
6088 case SCTP_PACKET_DROPPED:
6089 stcb->asoc.peer_supports_pktdrop = 1;
6091 case SCTP_NR_SELECTIVE_ACK:
6092 if (SCTP_BASE_SYSCTL(sctp_nr_sack_on_off))
6093 stcb->asoc.peer_supports_nr_sack = 1;
6095 stcb->asoc.peer_supports_nr_sack = 0;
6097 case SCTP_STREAM_RESET:
6098 stcb->asoc.peer_supports_strreset = 1;
6100 case SCTP_AUTHENTICATION:
6101 stcb->asoc.peer_supports_auth = 1;
6104 /* one I have not learned yet */
6109 } else if (ptype == SCTP_ECN_NONCE_SUPPORTED) {
6110 /* Peer supports ECN-nonce */
6111 stcb->asoc.peer_supports_ecn_nonce = 1;
6112 stcb->asoc.ecn_nonce_allowed = 1;
6113 } else if (ptype == SCTP_RANDOM) {
6114 if (plen > sizeof(random_store))
6117 /* already processed a RANDOM */
6120 phdr = sctp_get_next_param(m, offset,
6121 (struct sctp_paramhdr *)random_store,
6122 min(sizeof(random_store), plen));
6125 p_random = (struct sctp_auth_random *)phdr;
6126 random_len = plen - sizeof(*p_random);
6127 /* enforce the random length */
6128 if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) {
6129 SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n");
6133 } else if (ptype == SCTP_HMAC_LIST) {
6137 if (plen > sizeof(hmacs_store))
6140 /* already processed a HMAC list */
6143 phdr = sctp_get_next_param(m, offset,
6144 (struct sctp_paramhdr *)hmacs_store,
6145 min(plen, sizeof(hmacs_store)));
6148 hmacs = (struct sctp_auth_hmac_algo *)phdr;
6149 hmacs_len = plen - sizeof(*hmacs);
6150 num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]);
6151 /* validate the hmac list */
6152 if (sctp_verify_hmac_param(hmacs, num_hmacs)) {
6155 if (stcb->asoc.peer_hmacs != NULL)
6156 sctp_free_hmaclist(stcb->asoc.peer_hmacs);
6157 stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs);
6158 if (stcb->asoc.peer_hmacs != NULL) {
6159 for (i = 0; i < num_hmacs; i++) {
6160 (void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs,
6161 ntohs(hmacs->hmac_ids[i]));
6165 } else if (ptype == SCTP_CHUNK_LIST) {
6168 if (plen > sizeof(chunks_store))
6171 /* already processed a Chunks list */
6174 phdr = sctp_get_next_param(m, offset,
6175 (struct sctp_paramhdr *)chunks_store,
6176 min(plen, sizeof(chunks_store)));
6179 chunks = (struct sctp_auth_chunk_list *)phdr;
6180 num_chunks = plen - sizeof(*chunks);
6181 if (stcb->asoc.peer_auth_chunks != NULL)
6182 sctp_clear_chunklist(stcb->asoc.peer_auth_chunks);
6184 stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist();
6185 for (i = 0; i < num_chunks; i++) {
6186 (void)sctp_auth_add_chunk(chunks->chunk_types[i],
6187 stcb->asoc.peer_auth_chunks);
6188 /* record asconf/asconf-ack if listed */
6189 if (chunks->chunk_types[i] == SCTP_ASCONF)
6191 if (chunks->chunk_types[i] == SCTP_ASCONF_ACK)
6196 } else if ((ptype == SCTP_HEARTBEAT_INFO) ||
6197 (ptype == SCTP_STATE_COOKIE) ||
6198 (ptype == SCTP_UNRECOG_PARAM) ||
6199 (ptype == SCTP_COOKIE_PRESERVE) ||
6200 (ptype == SCTP_SUPPORTED_ADDRTYPE) ||
6201 (ptype == SCTP_ADD_IP_ADDRESS) ||
6202 (ptype == SCTP_DEL_IP_ADDRESS) ||
6203 (ptype == SCTP_ERROR_CAUSE_IND) ||
6204 (ptype == SCTP_SUCCESS_REPORT)) {
6207 if ((ptype & 0x8000) == 0x0000) {
6209 * must stop processing the rest of the
6210 * param's. Any report bits were handled
6212 * sctp_arethere_unrecognized_parameters()
6213 * when the INIT or INIT-ACK was first seen.
6220 offset += SCTP_SIZE32(plen);
6221 if (offset >= limit) {
6224 phdr = sctp_get_next_param(m, offset, &parm_buf,
6227 /* Now check to see if we need to purge any addresses */
6228 for (net = TAILQ_FIRST(&stcb->asoc.nets); net != NULL; net = net_tmp) {
6229 net_tmp = TAILQ_NEXT(net, sctp_next);
6230 if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) ==
6231 SCTP_ADDR_NOT_IN_ASSOC) {
6232 /* This address has been removed from the asoc */
6233 /* remove and free it */
6234 stcb->asoc.numnets--;
6235 TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next);
6236 sctp_free_remote_addr(net);
6237 if (net == stcb->asoc.primary_destination) {
6238 stcb->asoc.primary_destination = NULL;
6239 sctp_select_primary_destination(stcb);
6243 /* validate authentication required parameters */
6244 if (got_random && got_hmacs) {
6245 stcb->asoc.peer_supports_auth = 1;
6247 stcb->asoc.peer_supports_auth = 0;
6249 if (!stcb->asoc.peer_supports_auth && got_chklist) {
6250 /* peer does not support auth but sent a chunks list? */
6253 if (!SCTP_BASE_SYSCTL(sctp_asconf_auth_nochk) && stcb->asoc.peer_supports_asconf &&
6254 !stcb->asoc.peer_supports_auth) {
6255 /* peer supports asconf but not auth? */
6257 } else if ((stcb->asoc.peer_supports_asconf) && (stcb->asoc.peer_supports_auth) &&
6258 ((saw_asconf == 0) || (saw_asconf_ack == 0))) {
6261 /* concatenate the full random key */
6262 keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len;
6263 if (chunks != NULL) {
6264 keylen += sizeof(*chunks) + num_chunks;
6266 new_key = sctp_alloc_key(keylen);
6267 if (new_key != NULL) {
6268 /* copy in the RANDOM */
6269 if (p_random != NULL) {
6270 keylen = sizeof(*p_random) + random_len;
6271 bcopy(p_random, new_key->key, keylen);
6273 /* append in the AUTH chunks */
6274 if (chunks != NULL) {
6275 bcopy(chunks, new_key->key + keylen,
6276 sizeof(*chunks) + num_chunks);
6277 keylen += sizeof(*chunks) + num_chunks;
6279 /* append in the HMACs */
6280 if (hmacs != NULL) {
6281 bcopy(hmacs, new_key->key + keylen,
6282 sizeof(*hmacs) + hmacs_len);
6285 /* failed to get memory for the key */
6288 if (stcb->asoc.authinfo.peer_random != NULL)
6289 sctp_free_key(stcb->asoc.authinfo.peer_random);
6290 stcb->asoc.authinfo.peer_random = new_key;
6291 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid);
6292 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid);
6298 sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa,
6299 struct sctp_nets *net)
6301 /* make sure the requested primary address exists in the assoc */
6302 if (net == NULL && sa)
6303 net = sctp_findnet(stcb, sa);
6306 /* didn't find the requested primary address! */
6309 /* set the primary address */
6310 if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
6311 /* Must be confirmed, so queue to set */
6312 net->dest_state |= SCTP_ADDR_REQ_PRIMARY;
6315 stcb->asoc.primary_destination = net;
6316 net->dest_state &= ~SCTP_ADDR_WAS_PRIMARY;
6317 net = TAILQ_FIRST(&stcb->asoc.nets);
6318 if (net != stcb->asoc.primary_destination) {
6320 * first one on the list is NOT the primary
6321 * sctp_cmpaddr() is much more efficent if the
6322 * primary is the first on the list, make it so.
6324 TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6325 TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6332 sctp_is_vtag_good(struct sctp_inpcb *inp, uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now, int save_in_twait)
6335 * This function serves two purposes. It will see if a TAG can be
6336 * re-used and return 1 for yes it is ok and 0 for don't use that
6337 * tag. A secondary function it will do is purge out old tags that
6340 struct sctpvtaghead *chain;
6341 struct sctp_tagblock *twait_block;
6342 struct sctpasochead *head;
6343 struct sctp_tcb *stcb;
6346 SCTP_INP_INFO_RLOCK();
6347 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag,
6348 SCTP_BASE_INFO(hashasocmark))];
6351 goto skip_vtag_check;
6353 LIST_FOREACH(stcb, head, sctp_asocs) {
6355 * We choose not to lock anything here. TCB's can't be
6356 * removed since we have the read lock, so they can't be
6357 * freed on us, same thing for the INP. I may be wrong with
6358 * this assumption, but we will go with it for now :-)
6360 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
6363 if (stcb->asoc.my_vtag == tag) {
6365 if (stcb->rport != rport) {
6368 if (stcb->sctp_ep->sctp_lport != lport) {
6371 /* Its a used tag set */
6372 SCTP_INP_INFO_WUNLOCK();
6378 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
6379 /* Now what about timed wait ? */
6380 if (!LIST_EMPTY(chain)) {
6382 * Block(s) are present, lets see if we have this tag in the
6385 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6386 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
6387 if (twait_block->vtag_block[i].v_tag == 0) {
6390 } else if ((long)twait_block->vtag_block[i].tv_sec_at_expire <
6392 /* Audit expires this guy */
6393 twait_block->vtag_block[i].tv_sec_at_expire = 0;
6394 twait_block->vtag_block[i].v_tag = 0;
6395 twait_block->vtag_block[i].lport = 0;
6396 twait_block->vtag_block[i].rport = 0;
6397 } else if ((twait_block->vtag_block[i].v_tag == tag) &&
6398 (twait_block->vtag_block[i].lport == lport) &&
6399 (twait_block->vtag_block[i].rport == rport)) {
6400 /* Bad tag, sorry :< */
6401 SCTP_INP_INFO_WUNLOCK();
6407 SCTP_INP_INFO_RUNLOCK();
6412 static sctp_assoc_t reneged_asoc_ids[256];
6413 static uint8_t reneged_at = 0;
6417 sctp_drain_mbufs(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
6420 * We must hunt this association for MBUF's past the cumack (i.e.
6421 * out of order data that we can renege on).
6423 struct sctp_association *asoc;
6424 struct sctp_tmit_chunk *chk, *nchk;
6425 uint32_t cumulative_tsn_p1;
6426 struct sctp_queued_to_read *ctl, *nctl;
6431 /* We look for anything larger than the cum-ack + 1 */
6434 if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) {
6435 /* none we can reneg on. */
6438 SCTP_STAT_INCR(sctps_protocol_drains_done);
6439 cumulative_tsn_p1 = asoc->cumulative_tsn + 1;
6441 /* First look in the re-assembly queue */
6442 chk = TAILQ_FIRST(&asoc->reasmqueue);
6444 /* Get the next one */
6445 nchk = TAILQ_NEXT(chk, sctp_next);
6446 if (compare_with_wrap(chk->rec.data.TSN_seq,
6447 cumulative_tsn_p1, MAX_TSN)) {
6448 /* Yep it is above cum-ack */
6450 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.TSN_seq, asoc->mapping_array_base_tsn);
6451 asoc->size_on_reasm_queue = sctp_sbspace_sub(asoc->size_on_reasm_queue, chk->send_size);
6452 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6453 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6454 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
6456 sctp_m_freem(chk->data);
6459 sctp_free_a_chunk(stcb, chk);
6463 /* Ok that was fun, now we will drain all the inbound streams? */
6464 for (strmat = 0; strmat < asoc->streamincnt; strmat++) {
6465 ctl = TAILQ_FIRST(&asoc->strmin[strmat].inqueue);
6467 nctl = TAILQ_NEXT(ctl, next);
6468 if (compare_with_wrap(ctl->sinfo_tsn,
6469 cumulative_tsn_p1, MAX_TSN)) {
6470 /* Yep it is above cum-ack */
6472 SCTP_CALC_TSN_TO_GAP(gap, ctl->sinfo_tsn, asoc->mapping_array_base_tsn);
6473 asoc->size_on_all_streams = sctp_sbspace_sub(asoc->size_on_all_streams, ctl->length);
6474 sctp_ucount_decr(asoc->cnt_on_all_streams);
6475 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6476 TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, ctl, next);
6478 sctp_m_freem(ctl->data);
6481 sctp_free_remote_addr(ctl->whoFrom);
6482 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
6483 SCTP_DECR_READQ_COUNT();
6489 /* We must back down to see what the new highest is */
6490 for (i = asoc->highest_tsn_inside_map;
6491 (compare_with_wrap(i, asoc->mapping_array_base_tsn, MAX_TSN) || (i == asoc->mapping_array_base_tsn));
6493 SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn);
6494 if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) {
6495 asoc->highest_tsn_inside_map = i;
6501 asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1;
6504 * Question, should we go through the delivery queue? The
6505 * only reason things are on here is the app not reading OR
6506 * a p-d-api up. An attacker COULD send enough in to
6507 * initiate the PD-API and then send a bunch of stuff to
6508 * other streams... these would wind up on the delivery
6509 * queue.. and then we would not get to them. But in order
6510 * to do this I then have to back-track and un-deliver
6511 * sequence numbers in streams.. el-yucko. I think for now
6512 * we will NOT look at the delivery queue and leave it to be
6513 * something to consider later. An alternative would be to
6514 * abort the P-D-API with a notification and then deliver
6515 * the data.... Or another method might be to keep track of
6516 * how many times the situation occurs and if we see a
6517 * possible attack underway just abort the association.
6520 SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt);
6523 * Now do we need to find a new
6524 * asoc->highest_tsn_inside_map?
6526 asoc->last_revoke_count = cnt;
6527 (void)SCTP_OS_TIMER_STOP(&stcb->asoc.dack_timer.timer);
6528 /* sa_ignore NO_NULL_CHK */
6529 sctp_send_sack(stcb);
6530 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED);
6531 reneged_asoc_ids[reneged_at] = sctp_get_associd(stcb);
6535 * Another issue, in un-setting the TSN's in the mapping array we
6536 * DID NOT adjust the higest_tsn marker. This will cause one of two
6537 * things to occur. It may cause us to do extra work in checking for
6538 * our mapping array movement. More importantly it may cause us to
6539 * SACK every datagram. This may not be a bad thing though since we
6540 * will recover once we get our cum-ack above and all this stuff we
6549 * We must walk the PCB lists for ALL associations here. The system
6550 * is LOW on MBUF's and needs help. This is where reneging will
6551 * occur. We really hope this does NOT happen!
6553 VNET_ITERATOR_DECL(vnet_iter);
6554 VNET_LIST_RLOCK_NOSLEEP();
6555 VNET_FOREACH(vnet_iter) {
6556 CURVNET_SET(vnet_iter);
6557 struct sctp_inpcb *inp;
6558 struct sctp_tcb *stcb;
6560 SCTP_STAT_INCR(sctps_protocol_drain_calls);
6561 if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
6568 SCTP_INP_INFO_RLOCK();
6569 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
6570 /* For each endpoint */
6571 SCTP_INP_RLOCK(inp);
6572 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
6573 /* For each association */
6574 SCTP_TCB_LOCK(stcb);
6575 sctp_drain_mbufs(inp, stcb);
6576 SCTP_TCB_UNLOCK(stcb);
6578 SCTP_INP_RUNLOCK(inp);
6580 SCTP_INP_INFO_RUNLOCK();
6583 VNET_LIST_RUNLOCK_NOSLEEP();
6587 * start a new iterator
6588 * iterates through all endpoints and associations based on the pcb_state
6589 * flags and asoc_state. "af" (mandatory) is executed for all matching
6590 * assocs and "ef" (optional) is executed when the iterator completes.
6591 * "inpf" (optional) is executed for each new endpoint as it is being
6592 * iterated through. inpe (optional) is called when the inp completes
6593 * its way through all the stcbs.
6596 sctp_initiate_iterator(inp_func inpf,
6600 uint32_t pcb_features,
6601 uint32_t asoc_state,
6605 struct sctp_inpcb *s_inp,
6606 uint8_t chunk_output_off)
6608 struct sctp_iterator *it = NULL;
6613 SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator),
6616 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
6619 memset(it, 0, sizeof(*it));
6620 it->function_assoc = af;
6621 it->function_inp = inpf;
6623 it->done_current_ep = 0;
6625 it->done_current_ep = 1;
6626 it->function_atend = ef;
6629 it->pcb_flags = pcb_state;
6630 it->pcb_features = pcb_features;
6631 it->asoc_state = asoc_state;
6632 it->function_inp_end = inpe;
6633 it->no_chunk_output = chunk_output_off;
6636 it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP;
6638 SCTP_INP_INFO_RLOCK();
6639 it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead));
6641 SCTP_INP_INFO_RUNLOCK();
6642 it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP;
6645 SCTP_IPI_ITERATOR_WQ_LOCK();
6647 SCTP_INP_INCR_REF(it->inp);
6649 TAILQ_INSERT_TAIL(&SCTP_BASE_INFO(iteratorhead), it, sctp_nxt_itr);
6650 #if defined(SCTP_USE_THREAD_BASED_ITERATOR)
6651 if (SCTP_BASE_INFO(iterator_running) == 0) {
6652 sctp_wakeup_iterator();
6654 SCTP_IPI_ITERATOR_WQ_UNLOCK();
6657 SCTP_INP_DECR_REF(it->inp);
6658 SCTP_IPI_ITERATOR_WQ_UNLOCK();
6659 /* Init the timer */
6660 SCTP_OS_TIMER_INIT(&it->tmr.timer);
6661 /* add to the list of all iterators */
6662 sctp_timer_start(SCTP_TIMER_TYPE_ITERATOR, (struct sctp_inpcb *)it,
6665 /* sa_ignore MEMLEAK {memory is put on the tailq for the iterator} */