xref: /freebsd/sys/netinet/sctp_pcb.c (revision 105b68b42dd11bce5c554b1ef0ddf73aa069d7da)
1f8829a4aSRandall Stewart /*-
251369649SPedro F. Giffuni  * SPDX-License-Identifier: BSD-3-Clause
351369649SPedro F. Giffuni  *
4830d754dSRandall Stewart  * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
5807aad63SMichael Tuexen  * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
6807aad63SMichael Tuexen  * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
7f8829a4aSRandall Stewart  *
8f8829a4aSRandall Stewart  * Redistribution and use in source and binary forms, with or without
9f8829a4aSRandall Stewart  * modification, are permitted provided that the following conditions are met:
10f8829a4aSRandall Stewart  *
11f8829a4aSRandall Stewart  * a) Redistributions of source code must retain the above copyright notice,
12f8829a4aSRandall Stewart  *    this list of conditions and the following disclaimer.
13f8829a4aSRandall Stewart  *
14f8829a4aSRandall Stewart  * b) Redistributions in binary form must reproduce the above copyright
15f8829a4aSRandall Stewart  *    notice, this list of conditions and the following disclaimer in
16f8829a4aSRandall Stewart  *    the documentation and/or other materials provided with the distribution.
17f8829a4aSRandall Stewart  *
18f8829a4aSRandall Stewart  * c) Neither the name of Cisco Systems, Inc. nor the names of its
19f8829a4aSRandall Stewart  *    contributors may be used to endorse or promote products derived
20f8829a4aSRandall Stewart  *    from this software without specific prior written permission.
21f8829a4aSRandall Stewart  *
22f8829a4aSRandall Stewart  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23f8829a4aSRandall Stewart  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
24f8829a4aSRandall Stewart  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25f8829a4aSRandall Stewart  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26f8829a4aSRandall Stewart  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27f8829a4aSRandall Stewart  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28f8829a4aSRandall Stewart  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29f8829a4aSRandall Stewart  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30f8829a4aSRandall Stewart  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31f8829a4aSRandall Stewart  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32f8829a4aSRandall Stewart  * THE POSSIBILITY OF SUCH DAMAGE.
33f8829a4aSRandall Stewart  */
34f8829a4aSRandall Stewart 
35f8829a4aSRandall Stewart #include <sys/cdefs.h>
36f8829a4aSRandall Stewart __FBSDID("$FreeBSD$");
37f8829a4aSRandall Stewart 
38f8829a4aSRandall Stewart #include <netinet/sctp_os.h>
3993164cf9SRandall Stewart #include <sys/proc.h>
40f8829a4aSRandall Stewart #include <netinet/sctp_var.h>
4142551e99SRandall Stewart #include <netinet/sctp_sysctl.h>
42f8829a4aSRandall Stewart #include <netinet/sctp_pcb.h>
43f8829a4aSRandall Stewart #include <netinet/sctputil.h>
44f8829a4aSRandall Stewart #include <netinet/sctp.h>
45f8829a4aSRandall Stewart #include <netinet/sctp_header.h>
46f8829a4aSRandall Stewart #include <netinet/sctp_asconf.h>
47f8829a4aSRandall Stewart #include <netinet/sctp_output.h>
48f8829a4aSRandall Stewart #include <netinet/sctp_timer.h>
4942551e99SRandall Stewart #include <netinet/sctp_bsd_addr.h>
504474d71aSMichael Tuexen #if defined(INET) || defined(INET6)
51c54a18d2SRandall Stewart #include <netinet/udp.h>
524474d71aSMichael Tuexen #endif
5358bdb691SMichael Tuexen #ifdef INET6
5458bdb691SMichael Tuexen #include <netinet6/ip6_var.h>
5558bdb691SMichael Tuexen #endif
56bfc46083SRandall Stewart #include <sys/sched.h>
57bfc46083SRandall Stewart #include <sys/smp.h>
58bfc46083SRandall Stewart #include <sys/unistd.h>
59f8829a4aSRandall Stewart 
60f8829a4aSRandall Stewart /* FIX: we don't handle multiple link local scopes */
61f8829a4aSRandall Stewart /* "scopeless" replacement IN6_ARE_ADDR_EQUAL */
625e2c2d87SRandall Stewart #ifdef INET6
63f8829a4aSRandall Stewart int
64c54a18d2SRandall Stewart SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b)
65f8829a4aSRandall Stewart {
66c54a18d2SRandall Stewart 	struct sockaddr_in6 tmp_a, tmp_b;
67f8829a4aSRandall Stewart 
68c54a18d2SRandall Stewart 	memcpy(&tmp_a, a, sizeof(struct sockaddr_in6));
69482444b4SRandall Stewart 	if (sa6_embedscope(&tmp_a, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
7060990c0cSMichael Tuexen 		return (0);
71c54a18d2SRandall Stewart 	}
72c54a18d2SRandall Stewart 	memcpy(&tmp_b, b, sizeof(struct sockaddr_in6));
73482444b4SRandall Stewart 	if (sa6_embedscope(&tmp_b, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
7460990c0cSMichael Tuexen 		return (0);
75c54a18d2SRandall Stewart 	}
76c54a18d2SRandall Stewart 	return (IN6_ARE_ADDR_EQUAL(&tmp_a.sin6_addr, &tmp_b.sin6_addr));
77f8829a4aSRandall Stewart }
785e2c2d87SRandall Stewart #endif
795e2c2d87SRandall Stewart 
80f8829a4aSRandall Stewart void
81f8829a4aSRandall Stewart sctp_fill_pcbinfo(struct sctp_pcbinfo *spcb)
82f8829a4aSRandall Stewart {
83f8829a4aSRandall Stewart 	/*
84f8829a4aSRandall Stewart 	 * We really don't need to lock this, but I will just because it
85f8829a4aSRandall Stewart 	 * does not hurt.
86f8829a4aSRandall Stewart 	 */
87f8829a4aSRandall Stewart 	SCTP_INP_INFO_RLOCK();
88b3f1ea41SRandall Stewart 	spcb->ep_count = SCTP_BASE_INFO(ipi_count_ep);
89b3f1ea41SRandall Stewart 	spcb->asoc_count = SCTP_BASE_INFO(ipi_count_asoc);
90b3f1ea41SRandall Stewart 	spcb->laddr_count = SCTP_BASE_INFO(ipi_count_laddr);
91b3f1ea41SRandall Stewart 	spcb->raddr_count = SCTP_BASE_INFO(ipi_count_raddr);
92b3f1ea41SRandall Stewart 	spcb->chk_count = SCTP_BASE_INFO(ipi_count_chunk);
93b3f1ea41SRandall Stewart 	spcb->readq_count = SCTP_BASE_INFO(ipi_count_readq);
94b3f1ea41SRandall Stewart 	spcb->stream_oque = SCTP_BASE_INFO(ipi_count_strmoq);
95b3f1ea41SRandall Stewart 	spcb->free_chunks = SCTP_BASE_INFO(ipi_free_chunks);
96f8829a4aSRandall Stewart 	SCTP_INP_INFO_RUNLOCK();
97f8829a4aSRandall Stewart }
98f8829a4aSRandall Stewart 
99a1cb341bSMichael Tuexen /*-
10042551e99SRandall Stewart  * Addresses are added to VRF's (Virtual Router's). For BSD we
10142551e99SRandall Stewart  * have only the default VRF 0. We maintain a hash list of
10242551e99SRandall Stewart  * VRF's. Each VRF has its own list of sctp_ifn's. Each of
10342551e99SRandall Stewart  * these has a list of addresses. When we add a new address
10442551e99SRandall Stewart  * to a VRF we lookup the ifn/ifn_index, if the ifn does
10542551e99SRandall Stewart  * not exist we create it and add it to the list of IFN's
10642551e99SRandall Stewart  * within the VRF. Once we have the sctp_ifn, we add the
10742551e99SRandall Stewart  * address to the list. So we look something like:
10842551e99SRandall Stewart  *
10942551e99SRandall Stewart  * hash-vrf-table
11042551e99SRandall Stewart  *   vrf-> ifn-> ifn -> ifn
11142551e99SRandall Stewart  *   vrf    |
11242551e99SRandall Stewart  *    ...   +--ifa-> ifa -> ifa
11342551e99SRandall Stewart  *   vrf
11442551e99SRandall Stewart  *
115b1ce21c6SRebecca Cran  * We keep these separate lists since the SCTP subsystem will
11642551e99SRandall Stewart  * point to these from its source address selection nets structure.
11742551e99SRandall Stewart  * When an address is deleted it does not happen right away on
11842551e99SRandall Stewart  * the SCTP side, it gets scheduled. What we do when a
11942551e99SRandall Stewart  * delete happens is immediately remove the address from
12042551e99SRandall Stewart  * the master list and decrement the refcount. As our
12142551e99SRandall Stewart  * addip iterator works through and frees the src address
12242551e99SRandall Stewart  * selection pointing to the sctp_ifa, eventually the refcount
12342551e99SRandall Stewart  * will reach 0 and we will delete it. Note that it is assumed
12442551e99SRandall Stewart  * that any locking on system level ifn/ifa is done at the
12542551e99SRandall Stewart  * caller of these functions and these routines will only
12642551e99SRandall Stewart  * lock the SCTP structures as they add or delete things.
12742551e99SRandall Stewart  *
12842551e99SRandall Stewart  * Other notes on VRF concepts.
12942551e99SRandall Stewart  *  - An endpoint can be in multiple VRF's
13042551e99SRandall Stewart  *  - An association lives within a VRF and only one VRF.
13142551e99SRandall Stewart  *  - Any incoming packet we can deduce the VRF for by
13242551e99SRandall Stewart  *    looking at the mbuf/pak inbound (for BSD its VRF=0 :D)
13342551e99SRandall Stewart  *  - Any downward send call or connect call must supply the
13442551e99SRandall Stewart  *    VRF via ancillary data or via some sort of set default
13542551e99SRandall Stewart  *    VRF socket option call (again for BSD no brainer since
13642551e99SRandall Stewart  *    the VRF is always 0).
13742551e99SRandall Stewart  *  - An endpoint may add multiple VRF's to it.
13842551e99SRandall Stewart  *  - Listening sockets can accept associations in any
13942551e99SRandall Stewart  *    of the VRF's they are in but the assoc will end up
14042551e99SRandall Stewart  *    in only one VRF (gotten from the packet or connect/send).
14142551e99SRandall Stewart  *
14242551e99SRandall Stewart  */
14342551e99SRandall Stewart 
14442551e99SRandall Stewart struct sctp_vrf *
14517205eccSRandall Stewart sctp_allocate_vrf(int vrf_id)
14642551e99SRandall Stewart {
14742551e99SRandall Stewart 	struct sctp_vrf *vrf = NULL;
14842551e99SRandall Stewart 	struct sctp_vrflist *bucket;
14942551e99SRandall Stewart 
15042551e99SRandall Stewart 	/* First allocate the VRF structure */
15117205eccSRandall Stewart 	vrf = sctp_find_vrf(vrf_id);
15242551e99SRandall Stewart 	if (vrf) {
15342551e99SRandall Stewart 		/* Already allocated */
15442551e99SRandall Stewart 		return (vrf);
15542551e99SRandall Stewart 	}
15642551e99SRandall Stewart 	SCTP_MALLOC(vrf, struct sctp_vrf *, sizeof(struct sctp_vrf),
157207304d4SRandall Stewart 	    SCTP_M_VRF);
15842551e99SRandall Stewart 	if (vrf == NULL) {
15942551e99SRandall Stewart 		/* No memory */
16042551e99SRandall Stewart #ifdef INVARIANTS
16117205eccSRandall Stewart 		panic("No memory for VRF:%d", vrf_id);
16242551e99SRandall Stewart #endif
16342551e99SRandall Stewart 		return (NULL);
16442551e99SRandall Stewart 	}
16542551e99SRandall Stewart 	/* setup the VRF */
16642551e99SRandall Stewart 	memset(vrf, 0, sizeof(struct sctp_vrf));
16717205eccSRandall Stewart 	vrf->vrf_id = vrf_id;
16842551e99SRandall Stewart 	LIST_INIT(&vrf->ifnlist);
16942551e99SRandall Stewart 	vrf->total_ifa_count = 0;
17080fefe0aSRandall Stewart 	vrf->refcount = 0;
171f4c93d24SRandall Stewart 	/* now also setup table ids */
172f4c93d24SRandall Stewart 	SCTP_INIT_VRF_TABLEID(vrf);
1736a27c376SRandall Stewart 	/* Init the HASH of addresses */
17417205eccSRandall Stewart 	vrf->vrf_addr_hash = SCTP_HASH_INIT(SCTP_VRF_ADDR_HASH_SIZE,
17517205eccSRandall Stewart 	    &vrf->vrf_addr_hashmark);
1766a27c376SRandall Stewart 	if (vrf->vrf_addr_hash == NULL) {
1776a27c376SRandall Stewart 		/* No memory */
1786a27c376SRandall Stewart #ifdef INVARIANTS
17917205eccSRandall Stewart 		panic("No memory for VRF:%d", vrf_id);
18017205eccSRandall Stewart #endif
181207304d4SRandall Stewart 		SCTP_FREE(vrf, SCTP_M_VRF);
18217205eccSRandall Stewart 		return (NULL);
18317205eccSRandall Stewart 	}
1840053ed28SMichael Tuexen 
18542551e99SRandall Stewart 	/* Add it to the hash table */
186b3f1ea41SRandall Stewart 	bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
18742551e99SRandall Stewart 	LIST_INSERT_HEAD(bucket, vrf, next_vrf);
188b3f1ea41SRandall Stewart 	atomic_add_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
18942551e99SRandall Stewart 	return (vrf);
19042551e99SRandall Stewart }
19142551e99SRandall Stewart 
19242551e99SRandall Stewart struct sctp_ifn *
193f4c93d24SRandall Stewart sctp_find_ifn(void *ifn, uint32_t ifn_index)
19442551e99SRandall Stewart {
19542551e99SRandall Stewart 	struct sctp_ifn *sctp_ifnp;
19617205eccSRandall Stewart 	struct sctp_ifnlist *hash_ifn_head;
19742551e99SRandall Stewart 
19842551e99SRandall Stewart 	/*
199b1ce21c6SRebecca Cran 	 * We assume the lock is held for the addresses if that's wrong
20042551e99SRandall Stewart 	 * problems could occur :-)
20142551e99SRandall Stewart 	 */
2027f0ad227SMichael Tuexen 	SCTP_IPI_ADDR_LOCK_ASSERT();
203b3f1ea41SRandall Stewart 	hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
20417205eccSRandall Stewart 	LIST_FOREACH(sctp_ifnp, hash_ifn_head, next_bucket) {
20542551e99SRandall Stewart 		if (sctp_ifnp->ifn_index == ifn_index) {
20642551e99SRandall Stewart 			return (sctp_ifnp);
20742551e99SRandall Stewart 		}
20842551e99SRandall Stewart 		if (sctp_ifnp->ifn_p && ifn && (sctp_ifnp->ifn_p == ifn)) {
20942551e99SRandall Stewart 			return (sctp_ifnp);
21042551e99SRandall Stewart 		}
21142551e99SRandall Stewart 	}
21242551e99SRandall Stewart 	return (NULL);
21342551e99SRandall Stewart }
21442551e99SRandall Stewart 
21542551e99SRandall Stewart struct sctp_vrf *
21617205eccSRandall Stewart sctp_find_vrf(uint32_t vrf_id)
21742551e99SRandall Stewart {
21842551e99SRandall Stewart 	struct sctp_vrflist *bucket;
21942551e99SRandall Stewart 	struct sctp_vrf *liste;
22042551e99SRandall Stewart 
221b3f1ea41SRandall Stewart 	bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
22242551e99SRandall Stewart 	LIST_FOREACH(liste, bucket, next_vrf) {
22317205eccSRandall Stewart 		if (vrf_id == liste->vrf_id) {
22442551e99SRandall Stewart 			return (liste);
22542551e99SRandall Stewart 		}
22642551e99SRandall Stewart 	}
22742551e99SRandall Stewart 	return (NULL);
22842551e99SRandall Stewart }
22942551e99SRandall Stewart 
23080fefe0aSRandall Stewart void
23180fefe0aSRandall Stewart sctp_free_vrf(struct sctp_vrf *vrf)
23280fefe0aSRandall Stewart {
233830d754dSRandall Stewart 	if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&vrf->refcount)) {
2347a846e9aSRandall Stewart 		if (vrf->vrf_addr_hash) {
2357a846e9aSRandall Stewart 			SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
2367a846e9aSRandall Stewart 			vrf->vrf_addr_hash = NULL;
2377a846e9aSRandall Stewart 		}
23880fefe0aSRandall Stewart 		/* We zero'd the count */
23980fefe0aSRandall Stewart 		LIST_REMOVE(vrf, next_vrf);
24080fefe0aSRandall Stewart 		SCTP_FREE(vrf, SCTP_M_VRF);
241b3f1ea41SRandall Stewart 		atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
24280fefe0aSRandall Stewart 	}
24380fefe0aSRandall Stewart }
244bff64a4dSRandall Stewart 
24542551e99SRandall Stewart void
24617205eccSRandall Stewart sctp_free_ifn(struct sctp_ifn *sctp_ifnp)
24717205eccSRandall Stewart {
248830d754dSRandall Stewart 	if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifnp->refcount)) {
24917205eccSRandall Stewart 		/* We zero'd the count */
25080fefe0aSRandall Stewart 		if (sctp_ifnp->vrf) {
25180fefe0aSRandall Stewart 			sctp_free_vrf(sctp_ifnp->vrf);
25280fefe0aSRandall Stewart 		}
253207304d4SRandall Stewart 		SCTP_FREE(sctp_ifnp, SCTP_M_IFN);
254b3f1ea41SRandall Stewart 		atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
25517205eccSRandall Stewart 	}
25617205eccSRandall Stewart }
25717205eccSRandall Stewart 
25817205eccSRandall Stewart void
259f4c93d24SRandall Stewart sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu)
26017205eccSRandall Stewart {
26117205eccSRandall Stewart 	struct sctp_ifn *sctp_ifnp;
26217205eccSRandall Stewart 
263f4c93d24SRandall Stewart 	sctp_ifnp = sctp_find_ifn((void *)NULL, ifn_index);
26417205eccSRandall Stewart 	if (sctp_ifnp != NULL) {
26517205eccSRandall Stewart 		sctp_ifnp->ifn_mtu = mtu;
26617205eccSRandall Stewart 	}
26717205eccSRandall Stewart }
26817205eccSRandall Stewart 
26917205eccSRandall Stewart void
27042551e99SRandall Stewart sctp_free_ifa(struct sctp_ifa *sctp_ifap)
27142551e99SRandall Stewart {
272830d754dSRandall Stewart 	if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifap->refcount)) {
27342551e99SRandall Stewart 		/* We zero'd the count */
27480fefe0aSRandall Stewart 		if (sctp_ifap->ifn_p) {
27580fefe0aSRandall Stewart 			sctp_free_ifn(sctp_ifap->ifn_p);
27680fefe0aSRandall Stewart 		}
277207304d4SRandall Stewart 		SCTP_FREE(sctp_ifap, SCTP_M_IFA);
278b3f1ea41SRandall Stewart 		atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
27942551e99SRandall Stewart 	}
28042551e99SRandall Stewart }
28142551e99SRandall Stewart 
28217205eccSRandall Stewart static void
28317205eccSRandall Stewart sctp_delete_ifn(struct sctp_ifn *sctp_ifnp, int hold_addr_lock)
28417205eccSRandall Stewart {
28517205eccSRandall Stewart 	struct sctp_ifn *found;
28617205eccSRandall Stewart 
287f4c93d24SRandall Stewart 	found = sctp_find_ifn(sctp_ifnp->ifn_p, sctp_ifnp->ifn_index);
28817205eccSRandall Stewart 	if (found == NULL) {
28917205eccSRandall Stewart 		/* Not in the list.. sorry */
29017205eccSRandall Stewart 		return;
29117205eccSRandall Stewart 	}
2927f0ad227SMichael Tuexen 	if (hold_addr_lock == 0) {
293c99efcf6SRandall Stewart 		SCTP_IPI_ADDR_WLOCK();
2947f0ad227SMichael Tuexen 	} else {
2957f0ad227SMichael Tuexen 		SCTP_IPI_ADDR_WLOCK_ASSERT();
2967f0ad227SMichael Tuexen 	}
29717205eccSRandall Stewart 	LIST_REMOVE(sctp_ifnp, next_bucket);
29817205eccSRandall Stewart 	LIST_REMOVE(sctp_ifnp, next_ifn);
2997f0ad227SMichael Tuexen 	if (hold_addr_lock == 0) {
300c99efcf6SRandall Stewart 		SCTP_IPI_ADDR_WUNLOCK();
3017f0ad227SMichael Tuexen 	}
30217205eccSRandall Stewart 	/* Take away the reference, and possibly free it */
30317205eccSRandall Stewart 	sctp_free_ifn(sctp_ifnp);
30417205eccSRandall Stewart }
30517205eccSRandall Stewart 
306851b7298SRandall Stewart void
307baf3da66SRandall Stewart sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr,
308baf3da66SRandall Stewart     const char *if_name, uint32_t ifn_index)
309851b7298SRandall Stewart {
310851b7298SRandall Stewart 	struct sctp_vrf *vrf;
311a1cb341bSMichael Tuexen 	struct sctp_ifa *sctp_ifap;
312851b7298SRandall Stewart 
313c99efcf6SRandall Stewart 	SCTP_IPI_ADDR_RLOCK();
314851b7298SRandall Stewart 	vrf = sctp_find_vrf(vrf_id);
315851b7298SRandall Stewart 	if (vrf == NULL) {
316baf3da66SRandall Stewart 		SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
317851b7298SRandall Stewart 		goto out;
318851b7298SRandall Stewart 	}
319851b7298SRandall Stewart 	sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
320851b7298SRandall Stewart 	if (sctp_ifap == NULL) {
321baf3da66SRandall Stewart 		SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
322851b7298SRandall Stewart 		goto out;
323851b7298SRandall Stewart 	}
324851b7298SRandall Stewart 	if (sctp_ifap->ifn_p == NULL) {
325cd0a4ff6SPedro F. Giffuni 		SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unusable\n");
326851b7298SRandall Stewart 		goto out;
327851b7298SRandall Stewart 	}
328851b7298SRandall Stewart 	if (if_name) {
32936311411SMichael Tuexen 		if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) != 0) {
330baf3da66SRandall Stewart 			SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
33136311411SMichael Tuexen 			    sctp_ifap->ifn_p->ifn_name, if_name);
332851b7298SRandall Stewart 			goto out;
333851b7298SRandall Stewart 		}
334851b7298SRandall Stewart 	} else {
335851b7298SRandall Stewart 		if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
336baf3da66SRandall Stewart 			SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
337851b7298SRandall Stewart 			    sctp_ifap->ifn_p->ifn_index, ifn_index);
338851b7298SRandall Stewart 			goto out;
339851b7298SRandall Stewart 		}
340851b7298SRandall Stewart 	}
341851b7298SRandall Stewart 
342851b7298SRandall Stewart 	sctp_ifap->localifa_flags &= (~SCTP_ADDR_VALID);
343851b7298SRandall Stewart 	sctp_ifap->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE;
344851b7298SRandall Stewart out:
345c99efcf6SRandall Stewart 	SCTP_IPI_ADDR_RUNLOCK();
346851b7298SRandall Stewart }
347851b7298SRandall Stewart 
348851b7298SRandall Stewart void
349baf3da66SRandall Stewart sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr,
350baf3da66SRandall Stewart     const char *if_name, uint32_t ifn_index)
351851b7298SRandall Stewart {
352851b7298SRandall Stewart 	struct sctp_vrf *vrf;
353a1cb341bSMichael Tuexen 	struct sctp_ifa *sctp_ifap;
354851b7298SRandall Stewart 
355c99efcf6SRandall Stewart 	SCTP_IPI_ADDR_RLOCK();
356851b7298SRandall Stewart 	vrf = sctp_find_vrf(vrf_id);
357851b7298SRandall Stewart 	if (vrf == NULL) {
358baf3da66SRandall Stewart 		SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
359851b7298SRandall Stewart 		goto out;
360851b7298SRandall Stewart 	}
361851b7298SRandall Stewart 	sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
362851b7298SRandall Stewart 	if (sctp_ifap == NULL) {
363baf3da66SRandall Stewart 		SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
364851b7298SRandall Stewart 		goto out;
365851b7298SRandall Stewart 	}
366851b7298SRandall Stewart 	if (sctp_ifap->ifn_p == NULL) {
367cd0a4ff6SPedro F. Giffuni 		SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unusable\n");
368851b7298SRandall Stewart 		goto out;
369851b7298SRandall Stewart 	}
370851b7298SRandall Stewart 	if (if_name) {
37136311411SMichael Tuexen 		if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) != 0) {
372baf3da66SRandall Stewart 			SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
37336311411SMichael Tuexen 			    sctp_ifap->ifn_p->ifn_name, if_name);
374851b7298SRandall Stewart 			goto out;
375851b7298SRandall Stewart 		}
376851b7298SRandall Stewart 	} else {
377851b7298SRandall Stewart 		if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
378baf3da66SRandall Stewart 			SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
379851b7298SRandall Stewart 			    sctp_ifap->ifn_p->ifn_index, ifn_index);
380851b7298SRandall Stewart 			goto out;
381851b7298SRandall Stewart 		}
382851b7298SRandall Stewart 	}
383851b7298SRandall Stewart 
384851b7298SRandall Stewart 	sctp_ifap->localifa_flags &= (~SCTP_ADDR_IFA_UNUSEABLE);
385851b7298SRandall Stewart 	sctp_ifap->localifa_flags |= SCTP_ADDR_VALID;
386851b7298SRandall Stewart out:
387c99efcf6SRandall Stewart 	SCTP_IPI_ADDR_RUNLOCK();
388851b7298SRandall Stewart }
389851b7298SRandall Stewart 
390baf3da66SRandall Stewart /*-
391baf3da66SRandall Stewart  * Add an ifa to an ifn.
392baf3da66SRandall Stewart  * Register the interface as necessary.
393baf3da66SRandall Stewart  * NOTE: ADDR write lock MUST be held.
394baf3da66SRandall Stewart  */
395baf3da66SRandall Stewart static void
396baf3da66SRandall Stewart sctp_add_ifa_to_ifn(struct sctp_ifn *sctp_ifnp, struct sctp_ifa *sctp_ifap)
397baf3da66SRandall Stewart {
398baf3da66SRandall Stewart 	int ifa_af;
399baf3da66SRandall Stewart 
400baf3da66SRandall Stewart 	LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
401baf3da66SRandall Stewart 	sctp_ifap->ifn_p = sctp_ifnp;
402baf3da66SRandall Stewart 	atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
403baf3da66SRandall Stewart 	/* update address counts */
404baf3da66SRandall Stewart 	sctp_ifnp->ifa_count++;
405baf3da66SRandall Stewart 	ifa_af = sctp_ifap->address.sa.sa_family;
406e6194c2eSMichael Tuexen 	switch (ifa_af) {
407e6194c2eSMichael Tuexen #ifdef INET
408e6194c2eSMichael Tuexen 	case AF_INET:
409baf3da66SRandall Stewart 		sctp_ifnp->num_v4++;
410e6194c2eSMichael Tuexen 		break;
411e6194c2eSMichael Tuexen #endif
412e6194c2eSMichael Tuexen #ifdef INET6
413e6194c2eSMichael Tuexen 	case AF_INET6:
414baf3da66SRandall Stewart 		sctp_ifnp->num_v6++;
415e6194c2eSMichael Tuexen 		break;
416e6194c2eSMichael Tuexen #endif
417e6194c2eSMichael Tuexen 	default:
418e6194c2eSMichael Tuexen 		break;
419e6194c2eSMichael Tuexen 	}
420baf3da66SRandall Stewart 	if (sctp_ifnp->ifa_count == 1) {
421baf3da66SRandall Stewart 		/* register the new interface */
422baf3da66SRandall Stewart 		sctp_ifnp->registered_af = ifa_af;
423baf3da66SRandall Stewart 	}
424baf3da66SRandall Stewart }
425baf3da66SRandall Stewart 
426baf3da66SRandall Stewart /*-
427baf3da66SRandall Stewart  * Remove an ifa from its ifn.
428baf3da66SRandall Stewart  * If no more addresses exist, remove the ifn too. Otherwise, re-register
429baf3da66SRandall Stewart  * the interface based on the remaining address families left.
430baf3da66SRandall Stewart  * NOTE: ADDR write lock MUST be held.
431baf3da66SRandall Stewart  */
432baf3da66SRandall Stewart static void
433baf3da66SRandall Stewart sctp_remove_ifa_from_ifn(struct sctp_ifa *sctp_ifap)
434baf3da66SRandall Stewart {
435baf3da66SRandall Stewart 	LIST_REMOVE(sctp_ifap, next_ifa);
436baf3da66SRandall Stewart 	if (sctp_ifap->ifn_p) {
437baf3da66SRandall Stewart 		/* update address counts */
438baf3da66SRandall Stewart 		sctp_ifap->ifn_p->ifa_count--;
439e6194c2eSMichael Tuexen 		switch (sctp_ifap->address.sa.sa_family) {
440e6194c2eSMichael Tuexen #ifdef INET
441e6194c2eSMichael Tuexen 		case AF_INET:
442baf3da66SRandall Stewart 			sctp_ifap->ifn_p->num_v4--;
443e6194c2eSMichael Tuexen 			break;
444e6194c2eSMichael Tuexen #endif
445e6194c2eSMichael Tuexen #ifdef INET6
446e6194c2eSMichael Tuexen 		case AF_INET6:
447e6194c2eSMichael Tuexen 			sctp_ifap->ifn_p->num_v6--;
448e6194c2eSMichael Tuexen 			break;
449e6194c2eSMichael Tuexen #endif
450e6194c2eSMichael Tuexen 		default:
451e6194c2eSMichael Tuexen 			break;
452e6194c2eSMichael Tuexen 		}
453baf3da66SRandall Stewart 
45483fc1165SMichael Tuexen 		if (LIST_EMPTY(&sctp_ifap->ifn_p->ifalist)) {
455baf3da66SRandall Stewart 			/* remove the ifn, possibly freeing it */
456baf3da66SRandall Stewart 			sctp_delete_ifn(sctp_ifap->ifn_p, SCTP_ADDR_LOCKED);
457baf3da66SRandall Stewart 		} else {
458baf3da66SRandall Stewart 			/* re-register address family type, if needed */
459baf3da66SRandall Stewart 			if ((sctp_ifap->ifn_p->num_v6 == 0) &&
460baf3da66SRandall Stewart 			    (sctp_ifap->ifn_p->registered_af == AF_INET6)) {
461baf3da66SRandall Stewart 				sctp_ifap->ifn_p->registered_af = AF_INET;
462baf3da66SRandall Stewart 			} else if ((sctp_ifap->ifn_p->num_v4 == 0) &&
463baf3da66SRandall Stewart 			    (sctp_ifap->ifn_p->registered_af == AF_INET)) {
464baf3da66SRandall Stewart 				sctp_ifap->ifn_p->registered_af = AF_INET6;
465baf3da66SRandall Stewart 			}
466baf3da66SRandall Stewart 			/* free the ifn refcount */
467baf3da66SRandall Stewart 			sctp_free_ifn(sctp_ifap->ifn_p);
468baf3da66SRandall Stewart 		}
469baf3da66SRandall Stewart 		sctp_ifap->ifn_p = NULL;
470baf3da66SRandall Stewart 	}
471baf3da66SRandall Stewart }
47217205eccSRandall Stewart 
47342551e99SRandall Stewart struct sctp_ifa *
47417205eccSRandall Stewart sctp_add_addr_to_vrf(uint32_t vrf_id, void *ifn, uint32_t ifn_index,
475baf3da66SRandall Stewart     uint32_t ifn_type, const char *if_name, void *ifa,
476baf3da66SRandall Stewart     struct sockaddr *addr, uint32_t ifa_flags,
47717205eccSRandall Stewart     int dynamic_add)
47842551e99SRandall Stewart {
47942551e99SRandall Stewart 	struct sctp_vrf *vrf;
4807f0ad227SMichael Tuexen 	struct sctp_ifn *sctp_ifnp, *new_sctp_ifnp;
4817f0ad227SMichael Tuexen 	struct sctp_ifa *sctp_ifap, *new_sctp_ifap;
48217205eccSRandall Stewart 	struct sctp_ifalist *hash_addr_head;
48317205eccSRandall Stewart 	struct sctp_ifnlist *hash_ifn_head;
4846a27c376SRandall Stewart 	uint32_t hash_of_addr;
485ad21a364SRandall Stewart 	int new_ifn_af = 0;
48642551e99SRandall Stewart 
487baf3da66SRandall Stewart #ifdef SCTP_DEBUG
488baf3da66SRandall Stewart 	SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: adding address: ", vrf_id);
489baf3da66SRandall Stewart 	SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
490baf3da66SRandall Stewart #endif
4917f0ad227SMichael Tuexen 	SCTP_MALLOC(new_sctp_ifnp, struct sctp_ifn *,
4927f0ad227SMichael Tuexen 	    sizeof(struct sctp_ifn), SCTP_M_IFN);
4937f0ad227SMichael Tuexen 	if (new_sctp_ifnp == NULL) {
4947f0ad227SMichael Tuexen #ifdef INVARIANTS
4957f0ad227SMichael Tuexen 		panic("No memory for IFN");
4967f0ad227SMichael Tuexen #endif
4977f0ad227SMichael Tuexen 		return (NULL);
4987f0ad227SMichael Tuexen 	}
4997f0ad227SMichael Tuexen 	SCTP_MALLOC(new_sctp_ifap, struct sctp_ifa *, sizeof(struct sctp_ifa), SCTP_M_IFA);
5007f0ad227SMichael Tuexen 	if (new_sctp_ifap == NULL) {
5017f0ad227SMichael Tuexen #ifdef INVARIANTS
5027f0ad227SMichael Tuexen 		panic("No memory for IFA");
5037f0ad227SMichael Tuexen #endif
5047f0ad227SMichael Tuexen 		SCTP_FREE(new_sctp_ifnp, SCTP_M_IFN);
5057f0ad227SMichael Tuexen 		return (NULL);
5067f0ad227SMichael Tuexen 	}
5077f0ad227SMichael Tuexen 
508c99efcf6SRandall Stewart 	SCTP_IPI_ADDR_WLOCK();
50980fefe0aSRandall Stewart 	sctp_ifnp = sctp_find_ifn(ifn, ifn_index);
51080fefe0aSRandall Stewart 	if (sctp_ifnp) {
51180fefe0aSRandall Stewart 		vrf = sctp_ifnp->vrf;
51280fefe0aSRandall Stewart 	} else {
51317205eccSRandall Stewart 		vrf = sctp_find_vrf(vrf_id);
51442551e99SRandall Stewart 		if (vrf == NULL) {
51517205eccSRandall Stewart 			vrf = sctp_allocate_vrf(vrf_id);
51642551e99SRandall Stewart 			if (vrf == NULL) {
517c99efcf6SRandall Stewart 				SCTP_IPI_ADDR_WUNLOCK();
5187f0ad227SMichael Tuexen 				SCTP_FREE(new_sctp_ifnp, SCTP_M_IFN);
5197f0ad227SMichael Tuexen 				SCTP_FREE(new_sctp_ifap, SCTP_M_IFA);
52042551e99SRandall Stewart 				return (NULL);
52142551e99SRandall Stewart 			}
52242551e99SRandall Stewart 		}
52380fefe0aSRandall Stewart 	}
52442551e99SRandall Stewart 	if (sctp_ifnp == NULL) {
52542551e99SRandall Stewart 		/*
52642551e99SRandall Stewart 		 * build one and add it, can't hold lock until after malloc
52742551e99SRandall Stewart 		 * done though.
52842551e99SRandall Stewart 		 */
5297f0ad227SMichael Tuexen 		sctp_ifnp = new_sctp_ifnp;
5307f0ad227SMichael Tuexen 		new_sctp_ifnp = NULL;
531eacc51c5SRandall Stewart 		memset(sctp_ifnp, 0, sizeof(struct sctp_ifn));
53242551e99SRandall Stewart 		sctp_ifnp->ifn_index = ifn_index;
53342551e99SRandall Stewart 		sctp_ifnp->ifn_p = ifn;
53442551e99SRandall Stewart 		sctp_ifnp->ifn_type = ifn_type;
535b201f536SRandall Stewart 		sctp_ifnp->refcount = 0;
53642551e99SRandall Stewart 		sctp_ifnp->vrf = vrf;
53780fefe0aSRandall Stewart 		atomic_add_int(&vrf->refcount, 1);
538ad21a364SRandall Stewart 		sctp_ifnp->ifn_mtu = SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, addr->sa_family);
53917205eccSRandall Stewart 		if (if_name != NULL) {
540999f86d6SMichael Tuexen 			SCTP_SNPRINTF(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", if_name);
54117205eccSRandall Stewart 		} else {
542999f86d6SMichael Tuexen 			SCTP_SNPRINTF(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", "unknown");
54317205eccSRandall Stewart 		}
544b3f1ea41SRandall Stewart 		hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
54542551e99SRandall Stewart 		LIST_INIT(&sctp_ifnp->ifalist);
54617205eccSRandall Stewart 		LIST_INSERT_HEAD(hash_ifn_head, sctp_ifnp, next_bucket);
54742551e99SRandall Stewart 		LIST_INSERT_HEAD(&vrf->ifnlist, sctp_ifnp, next_ifn);
548b3f1ea41SRandall Stewart 		atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
549ad21a364SRandall Stewart 		new_ifn_af = 1;
55042551e99SRandall Stewart 	}
551851b7298SRandall Stewart 	sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
55242551e99SRandall Stewart 	if (sctp_ifap) {
55342551e99SRandall Stewart 		/* Hmm, it already exists? */
55442551e99SRandall Stewart 		if ((sctp_ifap->ifn_p) &&
55542551e99SRandall Stewart 		    (sctp_ifap->ifn_p->ifn_index == ifn_index)) {
556baf3da66SRandall Stewart 			SCTPDBG(SCTP_DEBUG_PCB4, "Using existing ifn %s (0x%x) for ifa %p\n",
557baf3da66SRandall Stewart 			    sctp_ifap->ifn_p->ifn_name, ifn_index,
558dd294dceSMichael Tuexen 			    (void *)sctp_ifap);
55980fefe0aSRandall Stewart 			if (new_ifn_af) {
56080fefe0aSRandall Stewart 				/* Remove the created one that we don't want */
561baf3da66SRandall Stewart 				sctp_delete_ifn(sctp_ifnp, SCTP_ADDR_LOCKED);
56280fefe0aSRandall Stewart 			}
56342551e99SRandall Stewart 			if (sctp_ifap->localifa_flags & SCTP_BEING_DELETED) {
56442551e99SRandall Stewart 				/* easy to solve, just switch back to active */
565baf3da66SRandall Stewart 				SCTPDBG(SCTP_DEBUG_PCB4, "Clearing deleted ifa flag\n");
56642551e99SRandall Stewart 				sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
56742551e99SRandall Stewart 				sctp_ifap->ifn_p = sctp_ifnp;
56880fefe0aSRandall Stewart 				atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
569baf3da66SRandall Stewart 			}
57042551e99SRandall Stewart 	exit_stage_left:
571c99efcf6SRandall Stewart 			SCTP_IPI_ADDR_WUNLOCK();
5727f0ad227SMichael Tuexen 			if (new_sctp_ifnp != NULL) {
5737f0ad227SMichael Tuexen 				SCTP_FREE(new_sctp_ifnp, SCTP_M_IFN);
5747f0ad227SMichael Tuexen 			}
5757f0ad227SMichael Tuexen 			SCTP_FREE(new_sctp_ifap, SCTP_M_IFA);
57642551e99SRandall Stewart 			return (sctp_ifap);
57742551e99SRandall Stewart 		} else {
57842551e99SRandall Stewart 			if (sctp_ifap->ifn_p) {
57942551e99SRandall Stewart 				/*
580034b88b0SMichael Tuexen 				 * The last IFN gets the address, remove the
581034b88b0SMichael Tuexen 				 * old one
58242551e99SRandall Stewart 				 */
583baf3da66SRandall Stewart 				SCTPDBG(SCTP_DEBUG_PCB4, "Moving ifa %p from %s (0x%x) to %s (0x%x)\n",
584dd294dceSMichael Tuexen 				    (void *)sctp_ifap, sctp_ifap->ifn_p->ifn_name,
585baf3da66SRandall Stewart 				    sctp_ifap->ifn_p->ifn_index, if_name,
586baf3da66SRandall Stewart 				    ifn_index);
587baf3da66SRandall Stewart 				/* remove the address from the old ifn */
588baf3da66SRandall Stewart 				sctp_remove_ifa_from_ifn(sctp_ifap);
589baf3da66SRandall Stewart 				/* move the address over to the new ifn */
590baf3da66SRandall Stewart 				sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
59142551e99SRandall Stewart 				goto exit_stage_left;
59242551e99SRandall Stewart 			} else {
59342551e99SRandall Stewart 				/* repair ifnp which was NULL ? */
59442551e99SRandall Stewart 				sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
595baf3da66SRandall Stewart 				SCTPDBG(SCTP_DEBUG_PCB4, "Repairing ifn %p for ifa %p\n",
596dd294dceSMichael Tuexen 				    (void *)sctp_ifnp, (void *)sctp_ifap);
597baf3da66SRandall Stewart 				sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
59842551e99SRandall Stewart 			}
59942551e99SRandall Stewart 			goto exit_stage_left;
60042551e99SRandall Stewart 		}
60142551e99SRandall Stewart 	}
6027f0ad227SMichael Tuexen 	sctp_ifap = new_sctp_ifap;
603132dea7dSRandall Stewart 	memset(sctp_ifap, 0, sizeof(struct sctp_ifa));
60442551e99SRandall Stewart 	sctp_ifap->ifn_p = sctp_ifnp;
60542551e99SRandall Stewart 	atomic_add_int(&sctp_ifnp->refcount, 1);
60622a67197SRandall Stewart 	sctp_ifap->vrf_id = vrf_id;
60742551e99SRandall Stewart 	sctp_ifap->ifa = ifa;
60842551e99SRandall Stewart 	memcpy(&sctp_ifap->address, addr, addr->sa_len);
60942551e99SRandall Stewart 	sctp_ifap->localifa_flags = SCTP_ADDR_VALID | SCTP_ADDR_DEFER_USE;
61042551e99SRandall Stewart 	sctp_ifap->flags = ifa_flags;
61142551e99SRandall Stewart 	/* Set scope */
6125e2c2d87SRandall Stewart 	switch (sctp_ifap->address.sa.sa_family) {
613e6194c2eSMichael Tuexen #ifdef INET
6145e2c2d87SRandall Stewart 	case AF_INET:
6155e2c2d87SRandall Stewart 		{
61642551e99SRandall Stewart 			struct sockaddr_in *sin;
61742551e99SRandall Stewart 
61824aaac8dSMichael Tuexen 			sin = &sctp_ifap->address.sin;
61942551e99SRandall Stewart 			if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
62042551e99SRandall Stewart 			    (IN4_ISLOOPBACK_ADDRESS(&sin->sin_addr))) {
62142551e99SRandall Stewart 				sctp_ifap->src_is_loop = 1;
62242551e99SRandall Stewart 			}
62342551e99SRandall Stewart 			if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
62442551e99SRandall Stewart 				sctp_ifap->src_is_priv = 1;
62542551e99SRandall Stewart 			}
626ad21a364SRandall Stewart 			sctp_ifnp->num_v4++;
627ad21a364SRandall Stewart 			if (new_ifn_af)
628ad21a364SRandall Stewart 				new_ifn_af = AF_INET;
6295e2c2d87SRandall Stewart 			break;
6305e2c2d87SRandall Stewart 		}
631e6194c2eSMichael Tuexen #endif
6325e2c2d87SRandall Stewart #ifdef INET6
6335e2c2d87SRandall Stewart 	case AF_INET6:
6345e2c2d87SRandall Stewart 		{
63542551e99SRandall Stewart 			/* ok to use deprecated addresses? */
63642551e99SRandall Stewart 			struct sockaddr_in6 *sin6;
63742551e99SRandall Stewart 
63824aaac8dSMichael Tuexen 			sin6 = &sctp_ifap->address.sin6;
63942551e99SRandall Stewart 			if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
64042551e99SRandall Stewart 			    (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))) {
64142551e99SRandall Stewart 				sctp_ifap->src_is_loop = 1;
64242551e99SRandall Stewart 			}
64342551e99SRandall Stewart 			if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
64442551e99SRandall Stewart 				sctp_ifap->src_is_priv = 1;
64542551e99SRandall Stewart 			}
646ad21a364SRandall Stewart 			sctp_ifnp->num_v6++;
647ad21a364SRandall Stewart 			if (new_ifn_af)
648ad21a364SRandall Stewart 				new_ifn_af = AF_INET6;
6495e2c2d87SRandall Stewart 			break;
6505e2c2d87SRandall Stewart 		}
6515e2c2d87SRandall Stewart #endif
6525e2c2d87SRandall Stewart 	default:
653ad21a364SRandall Stewart 		new_ifn_af = 0;
6545e2c2d87SRandall Stewart 		break;
65542551e99SRandall Stewart 	}
6566a27c376SRandall Stewart 	hash_of_addr = sctp_get_ifa_hash_val(&sctp_ifap->address.sa);
6576a27c376SRandall Stewart 
65842551e99SRandall Stewart 	if ((sctp_ifap->src_is_priv == 0) &&
65942551e99SRandall Stewart 	    (sctp_ifap->src_is_loop == 0)) {
66042551e99SRandall Stewart 		sctp_ifap->src_is_glob = 1;
66142551e99SRandall Stewart 	}
66217205eccSRandall Stewart 	hash_addr_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
66317205eccSRandall Stewart 	LIST_INSERT_HEAD(hash_addr_head, sctp_ifap, next_bucket);
66442551e99SRandall Stewart 	sctp_ifap->refcount = 1;
66542551e99SRandall Stewart 	LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
66642551e99SRandall Stewart 	sctp_ifnp->ifa_count++;
66742551e99SRandall Stewart 	vrf->total_ifa_count++;
668b3f1ea41SRandall Stewart 	atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
669ad21a364SRandall Stewart 	if (new_ifn_af) {
670ad21a364SRandall Stewart 		sctp_ifnp->registered_af = new_ifn_af;
671ad21a364SRandall Stewart 	}
672c99efcf6SRandall Stewart 	SCTP_IPI_ADDR_WUNLOCK();
6737f0ad227SMichael Tuexen 	if (new_sctp_ifnp != NULL) {
6747f0ad227SMichael Tuexen 		SCTP_FREE(new_sctp_ifnp, SCTP_M_IFN);
6757f0ad227SMichael Tuexen 	}
6767f0ad227SMichael Tuexen 
677d06c82f1SRandall Stewart 	if (dynamic_add) {
678d06c82f1SRandall Stewart 		/*
679d06c82f1SRandall Stewart 		 * Bump up the refcount so that when the timer completes it
680d06c82f1SRandall Stewart 		 * will drop back down.
681d06c82f1SRandall Stewart 		 */
682d06c82f1SRandall Stewart 		struct sctp_laddr *wi;
683d06c82f1SRandall Stewart 
684d06c82f1SRandall Stewart 		atomic_add_int(&sctp_ifap->refcount, 1);
685b3f1ea41SRandall Stewart 		wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
686d06c82f1SRandall Stewart 		if (wi == NULL) {
687d06c82f1SRandall Stewart 			/*
688d06c82f1SRandall Stewart 			 * Gak, what can we do? We have lost an address
689d06c82f1SRandall Stewart 			 * change can you say HOSED?
690d06c82f1SRandall Stewart 			 */
691baf3da66SRandall Stewart 			SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
692d06c82f1SRandall Stewart 			/* Opps, must decrement the count */
693baf3da66SRandall Stewart 			sctp_del_addr_from_vrf(vrf_id, addr, ifn_index,
694baf3da66SRandall Stewart 			    if_name);
695d06c82f1SRandall Stewart 			return (NULL);
696d06c82f1SRandall Stewart 		}
697d06c82f1SRandall Stewart 		SCTP_INCR_LADDR_COUNT();
6985ba7f91fSMichael Tuexen 		memset(wi, 0, sizeof(*wi));
699d61a0ae0SRandall Stewart 		(void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
700d06c82f1SRandall Stewart 		wi->ifa = sctp_ifap;
701d06c82f1SRandall Stewart 		wi->action = SCTP_ADD_IP_ADDRESS;
702f7517433SRandall Stewart 
703f7517433SRandall Stewart 		SCTP_WQ_ADDR_LOCK();
704b3f1ea41SRandall Stewart 		LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
705d06c82f1SRandall Stewart 		sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
706d06c82f1SRandall Stewart 		    (struct sctp_inpcb *)NULL,
707d06c82f1SRandall Stewart 		    (struct sctp_tcb *)NULL,
708d06c82f1SRandall Stewart 		    (struct sctp_nets *)NULL);
7092c62ba73SMichael Tuexen 		SCTP_WQ_ADDR_UNLOCK();
71017205eccSRandall Stewart 	} else {
71117205eccSRandall Stewart 		/* it's ready for use */
71217205eccSRandall Stewart 		sctp_ifap->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
713d06c82f1SRandall Stewart 	}
71442551e99SRandall Stewart 	return (sctp_ifap);
71542551e99SRandall Stewart }
71642551e99SRandall Stewart 
717d06c82f1SRandall Stewart void
71817205eccSRandall Stewart sctp_del_addr_from_vrf(uint32_t vrf_id, struct sockaddr *addr,
719851b7298SRandall Stewart     uint32_t ifn_index, const char *if_name)
72042551e99SRandall Stewart {
72142551e99SRandall Stewart 	struct sctp_vrf *vrf;
72242551e99SRandall Stewart 	struct sctp_ifa *sctp_ifap = NULL;
72342551e99SRandall Stewart 
724c99efcf6SRandall Stewart 	SCTP_IPI_ADDR_WLOCK();
72517205eccSRandall Stewart 	vrf = sctp_find_vrf(vrf_id);
72642551e99SRandall Stewart 	if (vrf == NULL) {
727baf3da66SRandall Stewart 		SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
72842551e99SRandall Stewart 		goto out_now;
72942551e99SRandall Stewart 	}
7300053ed28SMichael Tuexen 
731baf3da66SRandall Stewart #ifdef SCTP_DEBUG
732baf3da66SRandall Stewart 	SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: deleting address:", vrf_id);
733baf3da66SRandall Stewart 	SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
734baf3da66SRandall Stewart #endif
735851b7298SRandall Stewart 	sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
73642551e99SRandall Stewart 	if (sctp_ifap) {
737851b7298SRandall Stewart 		/* Validate the delete */
738851b7298SRandall Stewart 		if (sctp_ifap->ifn_p) {
739851b7298SRandall Stewart 			int valid = 0;
740851b7298SRandall Stewart 
741851b7298SRandall Stewart 			/*-
742851b7298SRandall Stewart 			 * The name has priority over the ifn_index
7432cf33471SMichael Tuexen 			 * if its given.
744851b7298SRandall Stewart 			 */
745851b7298SRandall Stewart 			if (if_name) {
746eb20220eSMichael Tuexen 				if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) == 0) {
747eb20220eSMichael Tuexen 					/* They match its a correct delete */
748851b7298SRandall Stewart 					valid = 1;
749851b7298SRandall Stewart 				}
750851b7298SRandall Stewart 			}
751851b7298SRandall Stewart 			if (!valid) {
752851b7298SRandall Stewart 				/* last ditch check ifn_index */
753851b7298SRandall Stewart 				if (ifn_index == sctp_ifap->ifn_p->ifn_index) {
754851b7298SRandall Stewart 					valid = 1;
755851b7298SRandall Stewart 				}
756851b7298SRandall Stewart 			}
757851b7298SRandall Stewart 			if (!valid) {
758baf3da66SRandall Stewart 				SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s does not match addresses\n",
759851b7298SRandall Stewart 				    ifn_index, ((if_name == NULL) ? "NULL" : if_name));
760baf3da66SRandall Stewart 				SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s - ignoring delete\n",
761851b7298SRandall Stewart 				    sctp_ifap->ifn_p->ifn_index, sctp_ifap->ifn_p->ifn_name);
762c99efcf6SRandall Stewart 				SCTP_IPI_ADDR_WUNLOCK();
763851b7298SRandall Stewart 				return;
764851b7298SRandall Stewart 			}
765851b7298SRandall Stewart 		}
766dd294dceSMichael Tuexen 		SCTPDBG(SCTP_DEBUG_PCB4, "Deleting ifa %p\n", (void *)sctp_ifap);
76742551e99SRandall Stewart 		sctp_ifap->localifa_flags &= SCTP_ADDR_VALID;
7689ba5b6b7SMichael Tuexen 		/*
7699ba5b6b7SMichael Tuexen 		 * We don't set the flag. This means that the structure will
7709ba5b6b7SMichael Tuexen 		 * hang around in EP's that have bound specific to it until
7719ba5b6b7SMichael Tuexen 		 * they close. This gives us TCP like behavior if someone
7729ba5b6b7SMichael Tuexen 		 * removes an address (or for that matter adds it right
7739ba5b6b7SMichael Tuexen 		 * back).
7749ba5b6b7SMichael Tuexen 		 */
7759ba5b6b7SMichael Tuexen 		/* sctp_ifap->localifa_flags |= SCTP_BEING_DELETED; */
77642551e99SRandall Stewart 		vrf->total_ifa_count--;
7776a27c376SRandall Stewart 		LIST_REMOVE(sctp_ifap, next_bucket);
778baf3da66SRandall Stewart 		sctp_remove_ifa_from_ifn(sctp_ifap);
77917205eccSRandall Stewart 	}
78017205eccSRandall Stewart #ifdef SCTP_DEBUG
78117205eccSRandall Stewart 	else {
782baf3da66SRandall Stewart 		SCTPDBG(SCTP_DEBUG_PCB4, "Del Addr-ifn:%d Could not find address:",
78342551e99SRandall Stewart 		    ifn_index);
784ad81507eSRandall Stewart 		SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
78542551e99SRandall Stewart 	}
78617205eccSRandall Stewart #endif
787ad81507eSRandall Stewart 
78842551e99SRandall Stewart out_now:
789c99efcf6SRandall Stewart 	SCTP_IPI_ADDR_WUNLOCK();
790d06c82f1SRandall Stewart 	if (sctp_ifap) {
791d06c82f1SRandall Stewart 		struct sctp_laddr *wi;
792d06c82f1SRandall Stewart 
793b3f1ea41SRandall Stewart 		wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
794d06c82f1SRandall Stewart 		if (wi == NULL) {
795d06c82f1SRandall Stewart 			/*
796d06c82f1SRandall Stewart 			 * Gak, what can we do? We have lost an address
797d06c82f1SRandall Stewart 			 * change can you say HOSED?
798d06c82f1SRandall Stewart 			 */
799baf3da66SRandall Stewart 			SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
800d06c82f1SRandall Stewart 
801c99efcf6SRandall Stewart 			/* Oops, must decrement the count */
802d06c82f1SRandall Stewart 			sctp_free_ifa(sctp_ifap);
803d06c82f1SRandall Stewart 			return;
804d06c82f1SRandall Stewart 		}
805d06c82f1SRandall Stewart 		SCTP_INCR_LADDR_COUNT();
8065ba7f91fSMichael Tuexen 		memset(wi, 0, sizeof(*wi));
807d61a0ae0SRandall Stewart 		(void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
808d06c82f1SRandall Stewart 		wi->ifa = sctp_ifap;
809d06c82f1SRandall Stewart 		wi->action = SCTP_DEL_IP_ADDRESS;
810f7517433SRandall Stewart 		SCTP_WQ_ADDR_LOCK();
811d06c82f1SRandall Stewart 		/*
812d06c82f1SRandall Stewart 		 * Should this really be a tailq? As it is we will process
813d06c82f1SRandall Stewart 		 * the newest first :-0
814d06c82f1SRandall Stewart 		 */
815b3f1ea41SRandall Stewart 		LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
816d06c82f1SRandall Stewart 		sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
817d06c82f1SRandall Stewart 		    (struct sctp_inpcb *)NULL,
818d06c82f1SRandall Stewart 		    (struct sctp_tcb *)NULL,
819d06c82f1SRandall Stewart 		    (struct sctp_nets *)NULL);
8202c62ba73SMichael Tuexen 		SCTP_WQ_ADDR_UNLOCK();
821d06c82f1SRandall Stewart 	}
822d06c82f1SRandall Stewart 	return;
82342551e99SRandall Stewart }
824f8829a4aSRandall Stewart 
825749c49acSMichael Tuexen static int
826749c49acSMichael Tuexen sctp_does_stcb_own_this_addr(struct sctp_tcb *stcb, struct sockaddr *to)
827749c49acSMichael Tuexen {
828b54ddf22SMichael Tuexen 	int loopback_scope;
829b54ddf22SMichael Tuexen #if defined(INET)
830b54ddf22SMichael Tuexen 	int ipv4_local_scope, ipv4_addr_legal;
831b54ddf22SMichael Tuexen #endif
832b54ddf22SMichael Tuexen #if defined(INET6)
833b54ddf22SMichael Tuexen 	int local_scope, site_scope, ipv6_addr_legal;
834b54ddf22SMichael Tuexen #endif
835749c49acSMichael Tuexen 	struct sctp_vrf *vrf;
836749c49acSMichael Tuexen 	struct sctp_ifn *sctp_ifn;
837749c49acSMichael Tuexen 	struct sctp_ifa *sctp_ifa;
838749c49acSMichael Tuexen 
839a1cb341bSMichael Tuexen 	loopback_scope = stcb->asoc.scope.loopback_scope;
840b54ddf22SMichael Tuexen #if defined(INET)
841a1cb341bSMichael Tuexen 	ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
842b54ddf22SMichael Tuexen 	ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
843b54ddf22SMichael Tuexen #endif
844b54ddf22SMichael Tuexen #if defined(INET6)
845a1cb341bSMichael Tuexen 	local_scope = stcb->asoc.scope.local_scope;
846a1cb341bSMichael Tuexen 	site_scope = stcb->asoc.scope.site_scope;
847a1cb341bSMichael Tuexen 	ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
848b54ddf22SMichael Tuexen #endif
849749c49acSMichael Tuexen 
850749c49acSMichael Tuexen 	SCTP_IPI_ADDR_RLOCK();
851749c49acSMichael Tuexen 	vrf = sctp_find_vrf(stcb->asoc.vrf_id);
852749c49acSMichael Tuexen 	if (vrf == NULL) {
853749c49acSMichael Tuexen 		/* no vrf, no addresses */
854749c49acSMichael Tuexen 		SCTP_IPI_ADDR_RUNLOCK();
855749c49acSMichael Tuexen 		return (0);
856749c49acSMichael Tuexen 	}
8570053ed28SMichael Tuexen 
858749c49acSMichael Tuexen 	if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
859749c49acSMichael Tuexen 		LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
860749c49acSMichael Tuexen 			if ((loopback_scope == 0) &&
861749c49acSMichael Tuexen 			    SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
862749c49acSMichael Tuexen 				continue;
863749c49acSMichael Tuexen 			}
864749c49acSMichael Tuexen 			LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
865ca85e948SMichael Tuexen 				if (sctp_is_addr_restricted(stcb, sctp_ifa) &&
866ca85e948SMichael Tuexen 				    (!sctp_is_addr_pending(stcb, sctp_ifa))) {
867ca85e948SMichael Tuexen 					/*
868ca85e948SMichael Tuexen 					 * We allow pending addresses, where
869ca85e948SMichael Tuexen 					 * we have sent an asconf-add to be
870ca85e948SMichael Tuexen 					 * considered valid.
871ca85e948SMichael Tuexen 					 */
872749c49acSMichael Tuexen 					continue;
873ca85e948SMichael Tuexen 				}
874dcb3fc4cSMichael Tuexen 				if (sctp_ifa->address.sa.sa_family != to->sa_family) {
875dcb3fc4cSMichael Tuexen 					continue;
876dcb3fc4cSMichael Tuexen 				}
877749c49acSMichael Tuexen 				switch (sctp_ifa->address.sa.sa_family) {
878749c49acSMichael Tuexen #ifdef INET
879749c49acSMichael Tuexen 				case AF_INET:
880749c49acSMichael Tuexen 					if (ipv4_addr_legal) {
881749c49acSMichael Tuexen 						struct sockaddr_in *sin,
882749c49acSMichael Tuexen 						           *rsin;
883749c49acSMichael Tuexen 
884749c49acSMichael Tuexen 						sin = &sctp_ifa->address.sin;
885749c49acSMichael Tuexen 						rsin = (struct sockaddr_in *)to;
886749c49acSMichael Tuexen 						if ((ipv4_local_scope == 0) &&
887749c49acSMichael Tuexen 						    IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
888749c49acSMichael Tuexen 							continue;
889749c49acSMichael Tuexen 						}
8906ba22f19SMichael Tuexen 						if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
8916ba22f19SMichael Tuexen 						    &sin->sin_addr) != 0) {
8926ba22f19SMichael Tuexen 							continue;
8936ba22f19SMichael Tuexen 						}
894749c49acSMichael Tuexen 						if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
895749c49acSMichael Tuexen 							SCTP_IPI_ADDR_RUNLOCK();
896749c49acSMichael Tuexen 							return (1);
897749c49acSMichael Tuexen 						}
898749c49acSMichael Tuexen 					}
899749c49acSMichael Tuexen 					break;
900749c49acSMichael Tuexen #endif
901749c49acSMichael Tuexen #ifdef INET6
902749c49acSMichael Tuexen 				case AF_INET6:
903749c49acSMichael Tuexen 					if (ipv6_addr_legal) {
904749c49acSMichael Tuexen 						struct sockaddr_in6 *sin6,
905749c49acSMichael Tuexen 						            *rsin6;
906749c49acSMichael Tuexen 
907749c49acSMichael Tuexen 						sin6 = &sctp_ifa->address.sin6;
908749c49acSMichael Tuexen 						rsin6 = (struct sockaddr_in6 *)to;
9096ba22f19SMichael Tuexen 						if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
9106ba22f19SMichael Tuexen 						    &sin6->sin6_addr) != 0) {
9116ba22f19SMichael Tuexen 							continue;
9126ba22f19SMichael Tuexen 						}
913749c49acSMichael Tuexen 						if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
914749c49acSMichael Tuexen 							if (local_scope == 0)
915749c49acSMichael Tuexen 								continue;
916749c49acSMichael Tuexen 							if (sin6->sin6_scope_id == 0) {
917749c49acSMichael Tuexen 								if (sa6_recoverscope(sin6) != 0)
918749c49acSMichael Tuexen 									continue;
919749c49acSMichael Tuexen 							}
920749c49acSMichael Tuexen 						}
921749c49acSMichael Tuexen 						if ((site_scope == 0) &&
922749c49acSMichael Tuexen 						    (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
923749c49acSMichael Tuexen 							continue;
924749c49acSMichael Tuexen 						}
925749c49acSMichael Tuexen 						if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
926749c49acSMichael Tuexen 							SCTP_IPI_ADDR_RUNLOCK();
927749c49acSMichael Tuexen 							return (1);
928749c49acSMichael Tuexen 						}
929749c49acSMichael Tuexen 					}
930749c49acSMichael Tuexen 					break;
931749c49acSMichael Tuexen #endif
932749c49acSMichael Tuexen 				default:
933749c49acSMichael Tuexen 					/* TSNH */
934749c49acSMichael Tuexen 					break;
935749c49acSMichael Tuexen 				}
936749c49acSMichael Tuexen 			}
937749c49acSMichael Tuexen 		}
938749c49acSMichael Tuexen 	} else {
939749c49acSMichael Tuexen 		struct sctp_laddr *laddr;
940749c49acSMichael Tuexen 
941749c49acSMichael Tuexen 		LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
942f0d44a49SMichael Tuexen 			if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
943f0d44a49SMichael Tuexen 				SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
944f0d44a49SMichael Tuexen 				continue;
945f0d44a49SMichael Tuexen 			}
946ca85e948SMichael Tuexen 			if (sctp_is_addr_restricted(stcb, laddr->ifa) &&
947ca85e948SMichael Tuexen 			    (!sctp_is_addr_pending(stcb, laddr->ifa))) {
948ca85e948SMichael Tuexen 				/*
949ca85e948SMichael Tuexen 				 * We allow pending addresses, where we have
950ca85e948SMichael Tuexen 				 * sent an asconf-add to be considered
951ca85e948SMichael Tuexen 				 * valid.
952ca85e948SMichael Tuexen 				 */
953749c49acSMichael Tuexen 				continue;
954749c49acSMichael Tuexen 			}
955749c49acSMichael Tuexen 			if (laddr->ifa->address.sa.sa_family != to->sa_family) {
956749c49acSMichael Tuexen 				continue;
957749c49acSMichael Tuexen 			}
958749c49acSMichael Tuexen 			switch (to->sa_family) {
959749c49acSMichael Tuexen #ifdef INET
960749c49acSMichael Tuexen 			case AF_INET:
961749c49acSMichael Tuexen 				{
962749c49acSMichael Tuexen 					struct sockaddr_in *sin, *rsin;
963749c49acSMichael Tuexen 
96424aaac8dSMichael Tuexen 					sin = &laddr->ifa->address.sin;
965749c49acSMichael Tuexen 					rsin = (struct sockaddr_in *)to;
966749c49acSMichael Tuexen 					if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
967749c49acSMichael Tuexen 						SCTP_IPI_ADDR_RUNLOCK();
968749c49acSMichael Tuexen 						return (1);
969749c49acSMichael Tuexen 					}
970749c49acSMichael Tuexen 					break;
971749c49acSMichael Tuexen 				}
972749c49acSMichael Tuexen #endif
973749c49acSMichael Tuexen #ifdef INET6
974749c49acSMichael Tuexen 			case AF_INET6:
975749c49acSMichael Tuexen 				{
976749c49acSMichael Tuexen 					struct sockaddr_in6 *sin6, *rsin6;
977749c49acSMichael Tuexen 
97824aaac8dSMichael Tuexen 					sin6 = &laddr->ifa->address.sin6;
979749c49acSMichael Tuexen 					rsin6 = (struct sockaddr_in6 *)to;
980749c49acSMichael Tuexen 					if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
981749c49acSMichael Tuexen 						SCTP_IPI_ADDR_RUNLOCK();
982749c49acSMichael Tuexen 						return (1);
983749c49acSMichael Tuexen 					}
984749c49acSMichael Tuexen 					break;
985749c49acSMichael Tuexen 				}
986749c49acSMichael Tuexen 
987749c49acSMichael Tuexen #endif
988749c49acSMichael Tuexen 			default:
989749c49acSMichael Tuexen 				/* TSNH */
990749c49acSMichael Tuexen 				break;
991749c49acSMichael Tuexen 			}
992749c49acSMichael Tuexen 		}
993749c49acSMichael Tuexen 	}
994749c49acSMichael Tuexen 	SCTP_IPI_ADDR_RUNLOCK();
995749c49acSMichael Tuexen 	return (0);
996749c49acSMichael Tuexen }
997749c49acSMichael Tuexen 
998f0d44a49SMichael Tuexen static struct sctp_tcb *
999f0d44a49SMichael Tuexen sctp_tcb_special_locate(struct sctp_inpcb **inp_p, struct sockaddr *from,
1000f0d44a49SMichael Tuexen     struct sockaddr *to, struct sctp_nets **netp, uint32_t vrf_id)
1001f0d44a49SMichael Tuexen {
1002f0d44a49SMichael Tuexen 	/**** ASSUMES THE CALLER holds the INP_INFO_RLOCK */
1003f0d44a49SMichael Tuexen 	/*
1004f0d44a49SMichael Tuexen 	 * If we support the TCP model, then we must now dig through to see
1005f0d44a49SMichael Tuexen 	 * if we can find our endpoint in the list of tcp ep's.
1006f0d44a49SMichael Tuexen 	 */
1007f0d44a49SMichael Tuexen 	uint16_t lport, rport;
1008f0d44a49SMichael Tuexen 	struct sctppcbhead *ephead;
1009f0d44a49SMichael Tuexen 	struct sctp_inpcb *inp;
1010f0d44a49SMichael Tuexen 	struct sctp_laddr *laddr;
1011f0d44a49SMichael Tuexen 	struct sctp_tcb *stcb;
1012f0d44a49SMichael Tuexen 	struct sctp_nets *net;
1013f0d44a49SMichael Tuexen 
1014f0d44a49SMichael Tuexen 	if ((to == NULL) || (from == NULL)) {
1015f0d44a49SMichael Tuexen 		return (NULL);
1016f0d44a49SMichael Tuexen 	}
10170053ed28SMichael Tuexen 
1018f0d44a49SMichael Tuexen 	switch (to->sa_family) {
1019f0d44a49SMichael Tuexen #ifdef INET
1020f0d44a49SMichael Tuexen 	case AF_INET:
1021f0d44a49SMichael Tuexen 		if (from->sa_family == AF_INET) {
1022f0d44a49SMichael Tuexen 			lport = ((struct sockaddr_in *)to)->sin_port;
1023f0d44a49SMichael Tuexen 			rport = ((struct sockaddr_in *)from)->sin_port;
1024f0d44a49SMichael Tuexen 		} else {
1025f0d44a49SMichael Tuexen 			return (NULL);
1026f0d44a49SMichael Tuexen 		}
1027f0d44a49SMichael Tuexen 		break;
1028f0d44a49SMichael Tuexen #endif
1029f0d44a49SMichael Tuexen #ifdef INET6
1030f0d44a49SMichael Tuexen 	case AF_INET6:
1031f0d44a49SMichael Tuexen 		if (from->sa_family == AF_INET6) {
1032f0d44a49SMichael Tuexen 			lport = ((struct sockaddr_in6 *)to)->sin6_port;
1033f0d44a49SMichael Tuexen 			rport = ((struct sockaddr_in6 *)from)->sin6_port;
1034f0d44a49SMichael Tuexen 		} else {
1035f0d44a49SMichael Tuexen 			return (NULL);
1036f0d44a49SMichael Tuexen 		}
1037f0d44a49SMichael Tuexen 		break;
1038f0d44a49SMichael Tuexen #endif
1039f0d44a49SMichael Tuexen 	default:
1040f0d44a49SMichael Tuexen 		return (NULL);
1041f0d44a49SMichael Tuexen 	}
1042f0d44a49SMichael Tuexen 	ephead = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
1043f0d44a49SMichael Tuexen 	/*
1044f0d44a49SMichael Tuexen 	 * Ok now for each of the guys in this bucket we must look and see:
1045f0d44a49SMichael Tuexen 	 * - Does the remote port match. - Does there single association's
1046f0d44a49SMichael Tuexen 	 * addresses match this address (to). If so we update p_ep to point
1047f0d44a49SMichael Tuexen 	 * to this ep and return the tcb from it.
1048f0d44a49SMichael Tuexen 	 */
1049f0d44a49SMichael Tuexen 	LIST_FOREACH(inp, ephead, sctp_hash) {
1050f0d44a49SMichael Tuexen 		SCTP_INP_RLOCK(inp);
1051f0d44a49SMichael Tuexen 		if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1052f0d44a49SMichael Tuexen 			SCTP_INP_RUNLOCK(inp);
1053f0d44a49SMichael Tuexen 			continue;
1054f0d44a49SMichael Tuexen 		}
1055f0d44a49SMichael Tuexen 		if (lport != inp->sctp_lport) {
1056f0d44a49SMichael Tuexen 			SCTP_INP_RUNLOCK(inp);
1057f0d44a49SMichael Tuexen 			continue;
1058f0d44a49SMichael Tuexen 		}
10596ba22f19SMichael Tuexen 		switch (to->sa_family) {
10606ba22f19SMichael Tuexen #ifdef INET
10616ba22f19SMichael Tuexen 		case AF_INET:
10626ba22f19SMichael Tuexen 			{
10636ba22f19SMichael Tuexen 				struct sockaddr_in *sin;
10646ba22f19SMichael Tuexen 
10656ba22f19SMichael Tuexen 				sin = (struct sockaddr_in *)to;
10666ba22f19SMichael Tuexen 				if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
10676ba22f19SMichael Tuexen 				    &sin->sin_addr) != 0) {
10686ba22f19SMichael Tuexen 					SCTP_INP_RUNLOCK(inp);
10696ba22f19SMichael Tuexen 					continue;
10706ba22f19SMichael Tuexen 				}
10716ba22f19SMichael Tuexen 				break;
10726ba22f19SMichael Tuexen 			}
10736ba22f19SMichael Tuexen #endif
10746ba22f19SMichael Tuexen #ifdef INET6
10756ba22f19SMichael Tuexen 		case AF_INET6:
10766ba22f19SMichael Tuexen 			{
10776ba22f19SMichael Tuexen 				struct sockaddr_in6 *sin6;
10786ba22f19SMichael Tuexen 
10796ba22f19SMichael Tuexen 				sin6 = (struct sockaddr_in6 *)to;
10806ba22f19SMichael Tuexen 				if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
10816ba22f19SMichael Tuexen 				    &sin6->sin6_addr) != 0) {
10826ba22f19SMichael Tuexen 					SCTP_INP_RUNLOCK(inp);
10836ba22f19SMichael Tuexen 					continue;
10846ba22f19SMichael Tuexen 				}
10856ba22f19SMichael Tuexen 				break;
10866ba22f19SMichael Tuexen 			}
10876ba22f19SMichael Tuexen #endif
10886ba22f19SMichael Tuexen 		default:
10896ba22f19SMichael Tuexen 			SCTP_INP_RUNLOCK(inp);
10906ba22f19SMichael Tuexen 			continue;
10916ba22f19SMichael Tuexen 		}
1092f0d44a49SMichael Tuexen 		if (inp->def_vrf_id != vrf_id) {
1093f0d44a49SMichael Tuexen 			SCTP_INP_RUNLOCK(inp);
1094f0d44a49SMichael Tuexen 			continue;
1095f0d44a49SMichael Tuexen 		}
1096f0d44a49SMichael Tuexen 		/* check to see if the ep has one of the addresses */
1097f0d44a49SMichael Tuexen 		if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
1098f0d44a49SMichael Tuexen 			/* We are NOT bound all, so look further */
1099f0d44a49SMichael Tuexen 			int match = 0;
1100f0d44a49SMichael Tuexen 
1101f0d44a49SMichael Tuexen 			LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1102f0d44a49SMichael Tuexen 				if (laddr->ifa == NULL) {
11036e9c45e0SMichael Tuexen 					SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n", __func__);
1104f0d44a49SMichael Tuexen 					continue;
1105f0d44a49SMichael Tuexen 				}
1106f0d44a49SMichael Tuexen 				if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1107f0d44a49SMichael Tuexen 					SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
1108f0d44a49SMichael Tuexen 					continue;
1109f0d44a49SMichael Tuexen 				}
1110f0d44a49SMichael Tuexen 				if (laddr->ifa->address.sa.sa_family ==
1111f0d44a49SMichael Tuexen 				    to->sa_family) {
1112f0d44a49SMichael Tuexen 					/* see if it matches */
1113f0d44a49SMichael Tuexen #ifdef INET
1114f0d44a49SMichael Tuexen 					if (from->sa_family == AF_INET) {
1115f0d44a49SMichael Tuexen 						struct sockaddr_in *intf_addr,
1116f0d44a49SMichael Tuexen 						           *sin;
1117f0d44a49SMichael Tuexen 
1118f0d44a49SMichael Tuexen 						intf_addr = &laddr->ifa->address.sin;
1119f0d44a49SMichael Tuexen 						sin = (struct sockaddr_in *)to;
1120f0d44a49SMichael Tuexen 						if (sin->sin_addr.s_addr ==
1121f0d44a49SMichael Tuexen 						    intf_addr->sin_addr.s_addr) {
1122f0d44a49SMichael Tuexen 							match = 1;
1123f0d44a49SMichael Tuexen 							break;
1124f0d44a49SMichael Tuexen 						}
1125f0d44a49SMichael Tuexen 					}
1126f0d44a49SMichael Tuexen #endif
1127f0d44a49SMichael Tuexen #ifdef INET6
1128f0d44a49SMichael Tuexen 					if (from->sa_family == AF_INET6) {
1129f0d44a49SMichael Tuexen 						struct sockaddr_in6 *intf_addr6;
1130f0d44a49SMichael Tuexen 						struct sockaddr_in6 *sin6;
1131f0d44a49SMichael Tuexen 
1132f0d44a49SMichael Tuexen 						sin6 = (struct sockaddr_in6 *)
1133f0d44a49SMichael Tuexen 						    to;
1134f0d44a49SMichael Tuexen 						intf_addr6 = &laddr->ifa->address.sin6;
1135f0d44a49SMichael Tuexen 
1136f0d44a49SMichael Tuexen 						if (SCTP6_ARE_ADDR_EQUAL(sin6,
1137f0d44a49SMichael Tuexen 						    intf_addr6)) {
1138f0d44a49SMichael Tuexen 							match = 1;
1139f0d44a49SMichael Tuexen 							break;
1140f0d44a49SMichael Tuexen 						}
1141f0d44a49SMichael Tuexen 					}
1142f0d44a49SMichael Tuexen #endif
1143f0d44a49SMichael Tuexen 				}
1144f0d44a49SMichael Tuexen 			}
1145f0d44a49SMichael Tuexen 			if (match == 0) {
1146f0d44a49SMichael Tuexen 				/* This endpoint does not have this address */
1147f0d44a49SMichael Tuexen 				SCTP_INP_RUNLOCK(inp);
1148f0d44a49SMichael Tuexen 				continue;
1149f0d44a49SMichael Tuexen 			}
1150f0d44a49SMichael Tuexen 		}
1151f0d44a49SMichael Tuexen 		/*
1152f0d44a49SMichael Tuexen 		 * Ok if we hit here the ep has the address, does it hold
1153f0d44a49SMichael Tuexen 		 * the tcb?
1154f0d44a49SMichael Tuexen 		 */
1155f0d44a49SMichael Tuexen 		/* XXX: Why don't we TAILQ_FOREACH through sctp_asoc_list? */
1156f0d44a49SMichael Tuexen 		stcb = LIST_FIRST(&inp->sctp_asoc_list);
1157f0d44a49SMichael Tuexen 		if (stcb == NULL) {
1158f0d44a49SMichael Tuexen 			SCTP_INP_RUNLOCK(inp);
1159f0d44a49SMichael Tuexen 			continue;
1160f0d44a49SMichael Tuexen 		}
1161f0d44a49SMichael Tuexen 		SCTP_TCB_LOCK(stcb);
1162f0d44a49SMichael Tuexen 		if (!sctp_does_stcb_own_this_addr(stcb, to)) {
1163f0d44a49SMichael Tuexen 			SCTP_TCB_UNLOCK(stcb);
1164f0d44a49SMichael Tuexen 			SCTP_INP_RUNLOCK(inp);
1165f0d44a49SMichael Tuexen 			continue;
1166f0d44a49SMichael Tuexen 		}
1167f0d44a49SMichael Tuexen 		if (stcb->rport != rport) {
1168f0d44a49SMichael Tuexen 			/* remote port does not match. */
1169f0d44a49SMichael Tuexen 			SCTP_TCB_UNLOCK(stcb);
1170f0d44a49SMichael Tuexen 			SCTP_INP_RUNLOCK(inp);
1171f0d44a49SMichael Tuexen 			continue;
1172f0d44a49SMichael Tuexen 		}
1173f0d44a49SMichael Tuexen 		if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1174f0d44a49SMichael Tuexen 			SCTP_TCB_UNLOCK(stcb);
1175f0d44a49SMichael Tuexen 			SCTP_INP_RUNLOCK(inp);
1176f0d44a49SMichael Tuexen 			continue;
1177f0d44a49SMichael Tuexen 		}
1178f0d44a49SMichael Tuexen 		if (!sctp_does_stcb_own_this_addr(stcb, to)) {
1179f0d44a49SMichael Tuexen 			SCTP_TCB_UNLOCK(stcb);
1180f0d44a49SMichael Tuexen 			SCTP_INP_RUNLOCK(inp);
1181f0d44a49SMichael Tuexen 			continue;
1182f0d44a49SMichael Tuexen 		}
1183f0d44a49SMichael Tuexen 		/* Does this TCB have a matching address? */
1184f0d44a49SMichael Tuexen 		TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1185f0d44a49SMichael Tuexen 			if (net->ro._l_addr.sa.sa_family != from->sa_family) {
1186f0d44a49SMichael Tuexen 				/* not the same family, can't be a match */
1187f0d44a49SMichael Tuexen 				continue;
1188f0d44a49SMichael Tuexen 			}
1189f0d44a49SMichael Tuexen 			switch (from->sa_family) {
1190f0d44a49SMichael Tuexen #ifdef INET
1191f0d44a49SMichael Tuexen 			case AF_INET:
1192f0d44a49SMichael Tuexen 				{
1193f0d44a49SMichael Tuexen 					struct sockaddr_in *sin, *rsin;
1194f0d44a49SMichael Tuexen 
1195f0d44a49SMichael Tuexen 					sin = (struct sockaddr_in *)&net->ro._l_addr;
1196f0d44a49SMichael Tuexen 					rsin = (struct sockaddr_in *)from;
1197f0d44a49SMichael Tuexen 					if (sin->sin_addr.s_addr ==
1198f0d44a49SMichael Tuexen 					    rsin->sin_addr.s_addr) {
1199f0d44a49SMichael Tuexen 						/* found it */
1200f0d44a49SMichael Tuexen 						if (netp != NULL) {
1201f0d44a49SMichael Tuexen 							*netp = net;
1202f0d44a49SMichael Tuexen 						}
1203b7b84c0eSMichael Tuexen 						/*
1204b7b84c0eSMichael Tuexen 						 * Update the endpoint
1205b7b84c0eSMichael Tuexen 						 * pointer
1206b7b84c0eSMichael Tuexen 						 */
1207f0d44a49SMichael Tuexen 						*inp_p = inp;
1208f0d44a49SMichael Tuexen 						SCTP_INP_RUNLOCK(inp);
1209f0d44a49SMichael Tuexen 						return (stcb);
1210f0d44a49SMichael Tuexen 					}
1211f0d44a49SMichael Tuexen 					break;
1212f0d44a49SMichael Tuexen 				}
1213f0d44a49SMichael Tuexen #endif
1214f0d44a49SMichael Tuexen #ifdef INET6
1215f0d44a49SMichael Tuexen 			case AF_INET6:
1216f0d44a49SMichael Tuexen 				{
1217f0d44a49SMichael Tuexen 					struct sockaddr_in6 *sin6, *rsin6;
1218f0d44a49SMichael Tuexen 
1219f0d44a49SMichael Tuexen 					sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1220f0d44a49SMichael Tuexen 					rsin6 = (struct sockaddr_in6 *)from;
1221f0d44a49SMichael Tuexen 					if (SCTP6_ARE_ADDR_EQUAL(sin6,
1222f0d44a49SMichael Tuexen 					    rsin6)) {
1223f0d44a49SMichael Tuexen 						/* found it */
1224f0d44a49SMichael Tuexen 						if (netp != NULL) {
1225f0d44a49SMichael Tuexen 							*netp = net;
1226f0d44a49SMichael Tuexen 						}
1227b7b84c0eSMichael Tuexen 						/*
1228b7b84c0eSMichael Tuexen 						 * Update the endpoint
1229b7b84c0eSMichael Tuexen 						 * pointer
1230b7b84c0eSMichael Tuexen 						 */
1231f0d44a49SMichael Tuexen 						*inp_p = inp;
1232f0d44a49SMichael Tuexen 						SCTP_INP_RUNLOCK(inp);
1233f0d44a49SMichael Tuexen 						return (stcb);
1234f0d44a49SMichael Tuexen 					}
1235f0d44a49SMichael Tuexen 					break;
1236f0d44a49SMichael Tuexen 				}
1237f0d44a49SMichael Tuexen #endif
1238f0d44a49SMichael Tuexen 			default:
1239f0d44a49SMichael Tuexen 				/* TSNH */
1240f0d44a49SMichael Tuexen 				break;
1241f0d44a49SMichael Tuexen 			}
1242f0d44a49SMichael Tuexen 		}
1243f0d44a49SMichael Tuexen 		SCTP_TCB_UNLOCK(stcb);
1244f0d44a49SMichael Tuexen 		SCTP_INP_RUNLOCK(inp);
1245f0d44a49SMichael Tuexen 	}
1246f0d44a49SMichael Tuexen 	return (NULL);
1247f0d44a49SMichael Tuexen }
1248f0d44a49SMichael Tuexen 
1249f8829a4aSRandall Stewart /*
1250f8829a4aSRandall Stewart  * rules for use
1251f8829a4aSRandall Stewart  *
1252f8829a4aSRandall Stewart  * 1) If I return a NULL you must decrement any INP ref cnt. 2) If I find an
1253f8829a4aSRandall Stewart  * stcb, both will be locked (locked_tcb and stcb) but decrement will be done
1254f8829a4aSRandall Stewart  * (if locked == NULL). 3) Decrement happens on return ONLY if locked ==
1255f8829a4aSRandall Stewart  * NULL.
1256f8829a4aSRandall Stewart  */
1257f8829a4aSRandall Stewart 
1258f8829a4aSRandall Stewart struct sctp_tcb *
1259f8829a4aSRandall Stewart sctp_findassociation_ep_addr(struct sctp_inpcb **inp_p, struct sockaddr *remote,
1260f8829a4aSRandall Stewart     struct sctp_nets **netp, struct sockaddr *local, struct sctp_tcb *locked_tcb)
1261f8829a4aSRandall Stewart {
1262f8829a4aSRandall Stewart 	struct sctpasochead *head;
1263f8829a4aSRandall Stewart 	struct sctp_inpcb *inp;
1264bff64a4dSRandall Stewart 	struct sctp_tcb *stcb = NULL;
1265f8829a4aSRandall Stewart 	struct sctp_nets *net;
1266f8829a4aSRandall Stewart 	uint16_t rport;
1267f8829a4aSRandall Stewart 
1268f8829a4aSRandall Stewart 	inp = *inp_p;
1269b5e0cd79SMichael Tuexen 	switch (remote->sa_family) {
1270b5e0cd79SMichael Tuexen #ifdef INET
1271b5e0cd79SMichael Tuexen 	case AF_INET:
1272f8829a4aSRandall Stewart 		rport = (((struct sockaddr_in *)remote)->sin_port);
1273b5e0cd79SMichael Tuexen 		break;
1274b5e0cd79SMichael Tuexen #endif
1275b5e0cd79SMichael Tuexen #ifdef INET6
1276b5e0cd79SMichael Tuexen 	case AF_INET6:
1277f8829a4aSRandall Stewart 		rport = (((struct sockaddr_in6 *)remote)->sin6_port);
1278b5e0cd79SMichael Tuexen 		break;
1279b5e0cd79SMichael Tuexen #endif
1280b5e0cd79SMichael Tuexen 	default:
1281f8829a4aSRandall Stewart 		return (NULL);
1282f8829a4aSRandall Stewart 	}
1283f8829a4aSRandall Stewart 	if (locked_tcb) {
1284f8829a4aSRandall Stewart 		/*
1285f8829a4aSRandall Stewart 		 * UN-lock so we can do proper locking here this occurs when
1286f8829a4aSRandall Stewart 		 * called from load_addresses_from_init.
1287f8829a4aSRandall Stewart 		 */
1288c4739e2fSRandall Stewart 		atomic_add_int(&locked_tcb->asoc.refcnt, 1);
1289f8829a4aSRandall Stewart 		SCTP_TCB_UNLOCK(locked_tcb);
1290f8829a4aSRandall Stewart 	}
1291f8829a4aSRandall Stewart 	SCTP_INP_INFO_RLOCK();
1292e3976bb8SMichael Tuexen 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
1293e3976bb8SMichael Tuexen 	    (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
1294bff64a4dSRandall Stewart 		/*-
1295f8829a4aSRandall Stewart 		 * Now either this guy is our listener or it's the
1296f8829a4aSRandall Stewart 		 * connector. If it is the one that issued the connect, then
1297f8829a4aSRandall Stewart 		 * it's only chance is to be the first TCB in the list. If
1298f8829a4aSRandall Stewart 		 * it is the acceptor, then do the special_lookup to hash
1299f8829a4aSRandall Stewart 		 * and find the real inp.
1300f8829a4aSRandall Stewart 		 */
13015d08768aSMichael Tuexen 		if ((inp->sctp_socket) && SCTP_IS_LISTENING(inp)) {
1302f8829a4aSRandall Stewart 			/* to is peer addr, from is my addr */
1303f8829a4aSRandall Stewart 			stcb = sctp_tcb_special_locate(inp_p, remote, local,
1304bff64a4dSRandall Stewart 			    netp, inp->def_vrf_id);
1305f8829a4aSRandall Stewart 			if ((stcb != NULL) && (locked_tcb == NULL)) {
1306f8829a4aSRandall Stewart 				/* we have a locked tcb, lower refcount */
1307f8829a4aSRandall Stewart 				SCTP_INP_DECR_REF(inp);
1308f8829a4aSRandall Stewart 			}
1309f8829a4aSRandall Stewart 			if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
1310f8829a4aSRandall Stewart 				SCTP_INP_RLOCK(locked_tcb->sctp_ep);
1311f8829a4aSRandall Stewart 				SCTP_TCB_LOCK(locked_tcb);
1312c4739e2fSRandall Stewart 				atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1313f8829a4aSRandall Stewart 				SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
1314f8829a4aSRandall Stewart 			}
1315f8829a4aSRandall Stewart 			SCTP_INP_INFO_RUNLOCK();
1316f8829a4aSRandall Stewart 			return (stcb);
1317f8829a4aSRandall Stewart 		} else {
1318f8829a4aSRandall Stewart 			SCTP_INP_WLOCK(inp);
1319f8829a4aSRandall Stewart 			if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1320f8829a4aSRandall Stewart 				goto null_return;
1321f8829a4aSRandall Stewart 			}
1322f8829a4aSRandall Stewart 			stcb = LIST_FIRST(&inp->sctp_asoc_list);
1323f8829a4aSRandall Stewart 			if (stcb == NULL) {
1324f8829a4aSRandall Stewart 				goto null_return;
1325f8829a4aSRandall Stewart 			}
1326f8829a4aSRandall Stewart 			SCTP_TCB_LOCK(stcb);
1327fb8fb8f8SRandall Stewart 
1328f8829a4aSRandall Stewart 			if (stcb->rport != rport) {
1329f8829a4aSRandall Stewart 				/* remote port does not match. */
1330f8829a4aSRandall Stewart 				SCTP_TCB_UNLOCK(stcb);
1331f8829a4aSRandall Stewart 				goto null_return;
1332f8829a4aSRandall Stewart 			}
1333fb8fb8f8SRandall Stewart 			if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1334fb8fb8f8SRandall Stewart 				SCTP_TCB_UNLOCK(stcb);
1335fb8fb8f8SRandall Stewart 				goto null_return;
1336fb8fb8f8SRandall Stewart 			}
1337370d524fSMichael Tuexen 			if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1338749c49acSMichael Tuexen 				SCTP_TCB_UNLOCK(stcb);
1339749c49acSMichael Tuexen 				goto null_return;
1340749c49acSMichael Tuexen 			}
1341f8829a4aSRandall Stewart 			/* now look at the list of remote addresses */
1342f8829a4aSRandall Stewart 			TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1343a5d547adSRandall Stewart #ifdef INVARIANTS
1344f8829a4aSRandall Stewart 				if (net == (TAILQ_NEXT(net, sctp_next))) {
1345f8829a4aSRandall Stewart 					panic("Corrupt net list");
1346f8829a4aSRandall Stewart 				}
1347f8829a4aSRandall Stewart #endif
1348f8829a4aSRandall Stewart 				if (net->ro._l_addr.sa.sa_family !=
1349f8829a4aSRandall Stewart 				    remote->sa_family) {
1350f8829a4aSRandall Stewart 					/* not the same family */
1351f8829a4aSRandall Stewart 					continue;
1352f8829a4aSRandall Stewart 				}
13535e2c2d87SRandall Stewart 				switch (remote->sa_family) {
1354e6194c2eSMichael Tuexen #ifdef INET
13555e2c2d87SRandall Stewart 				case AF_INET:
13565e2c2d87SRandall Stewart 					{
13575e2c2d87SRandall Stewart 						struct sockaddr_in *sin,
13585e2c2d87SRandall Stewart 						           *rsin;
1359f8829a4aSRandall Stewart 
1360f8829a4aSRandall Stewart 						sin = (struct sockaddr_in *)
1361f8829a4aSRandall Stewart 						    &net->ro._l_addr;
1362f8829a4aSRandall Stewart 						rsin = (struct sockaddr_in *)remote;
1363f8829a4aSRandall Stewart 						if (sin->sin_addr.s_addr ==
1364f8829a4aSRandall Stewart 						    rsin->sin_addr.s_addr) {
1365f8829a4aSRandall Stewart 							/* found it */
1366f8829a4aSRandall Stewart 							if (netp != NULL) {
1367f8829a4aSRandall Stewart 								*netp = net;
1368f8829a4aSRandall Stewart 							}
1369f8829a4aSRandall Stewart 							if (locked_tcb == NULL) {
1370f8829a4aSRandall Stewart 								SCTP_INP_DECR_REF(inp);
1371f8829a4aSRandall Stewart 							} else if (locked_tcb != stcb) {
1372f8829a4aSRandall Stewart 								SCTP_TCB_LOCK(locked_tcb);
1373f8829a4aSRandall Stewart 							}
1374c4739e2fSRandall Stewart 							if (locked_tcb) {
1375c4739e2fSRandall Stewart 								atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1376c4739e2fSRandall Stewart 							}
13770053ed28SMichael Tuexen 
1378f8829a4aSRandall Stewart 							SCTP_INP_WUNLOCK(inp);
1379f8829a4aSRandall Stewart 							SCTP_INP_INFO_RUNLOCK();
1380f8829a4aSRandall Stewart 							return (stcb);
1381f8829a4aSRandall Stewart 						}
13825e2c2d87SRandall Stewart 						break;
13835e2c2d87SRandall Stewart 					}
1384e6194c2eSMichael Tuexen #endif
13855e2c2d87SRandall Stewart #ifdef INET6
13865e2c2d87SRandall Stewart 				case AF_INET6:
13875e2c2d87SRandall Stewart 					{
13885e2c2d87SRandall Stewart 						struct sockaddr_in6 *sin6,
13895e2c2d87SRandall Stewart 						            *rsin6;
1390f8829a4aSRandall Stewart 
1391f8829a4aSRandall Stewart 						sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1392f8829a4aSRandall Stewart 						rsin6 = (struct sockaddr_in6 *)remote;
1393c54a18d2SRandall Stewart 						if (SCTP6_ARE_ADDR_EQUAL(sin6,
1394c54a18d2SRandall Stewart 						    rsin6)) {
1395f8829a4aSRandall Stewart 							/* found it */
1396f8829a4aSRandall Stewart 							if (netp != NULL) {
1397f8829a4aSRandall Stewart 								*netp = net;
1398f8829a4aSRandall Stewart 							}
1399f8829a4aSRandall Stewart 							if (locked_tcb == NULL) {
1400f8829a4aSRandall Stewart 								SCTP_INP_DECR_REF(inp);
1401f8829a4aSRandall Stewart 							} else if (locked_tcb != stcb) {
1402f8829a4aSRandall Stewart 								SCTP_TCB_LOCK(locked_tcb);
1403f8829a4aSRandall Stewart 							}
1404c4739e2fSRandall Stewart 							if (locked_tcb) {
1405c4739e2fSRandall Stewart 								atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1406c4739e2fSRandall Stewart 							}
1407f8829a4aSRandall Stewart 							SCTP_INP_WUNLOCK(inp);
1408f8829a4aSRandall Stewart 							SCTP_INP_INFO_RUNLOCK();
1409f8829a4aSRandall Stewart 							return (stcb);
1410f8829a4aSRandall Stewart 						}
14115e2c2d87SRandall Stewart 						break;
14125e2c2d87SRandall Stewart 					}
14135e2c2d87SRandall Stewart #endif
14145e2c2d87SRandall Stewart 				default:
14155e2c2d87SRandall Stewart 					/* TSNH */
14165e2c2d87SRandall Stewart 					break;
1417f8829a4aSRandall Stewart 				}
1418f8829a4aSRandall Stewart 			}
1419f8829a4aSRandall Stewart 			SCTP_TCB_UNLOCK(stcb);
1420f8829a4aSRandall Stewart 		}
1421f8829a4aSRandall Stewart 	} else {
1422f8829a4aSRandall Stewart 		SCTP_INP_WLOCK(inp);
1423f8829a4aSRandall Stewart 		if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1424f8829a4aSRandall Stewart 			goto null_return;
1425f8829a4aSRandall Stewart 		}
1426f8829a4aSRandall Stewart 		head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport,
1427f8829a4aSRandall Stewart 		    inp->sctp_hashmark)];
1428f8829a4aSRandall Stewart 		LIST_FOREACH(stcb, head, sctp_tcbhash) {
1429f8829a4aSRandall Stewart 			if (stcb->rport != rport) {
1430f8829a4aSRandall Stewart 				/* remote port does not match */
1431f8829a4aSRandall Stewart 				continue;
1432f8829a4aSRandall Stewart 			}
1433f8829a4aSRandall Stewart 			SCTP_TCB_LOCK(stcb);
1434fb8fb8f8SRandall Stewart 			if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1435fb8fb8f8SRandall Stewart 				SCTP_TCB_UNLOCK(stcb);
1436fb8fb8f8SRandall Stewart 				continue;
1437fb8fb8f8SRandall Stewart 			}
1438370d524fSMichael Tuexen 			if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1439749c49acSMichael Tuexen 				SCTP_TCB_UNLOCK(stcb);
1440749c49acSMichael Tuexen 				continue;
1441749c49acSMichael Tuexen 			}
1442fb8fb8f8SRandall Stewart 			/* now look at the list of remote addresses */
1443f8829a4aSRandall Stewart 			TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1444a5d547adSRandall Stewart #ifdef INVARIANTS
1445f8829a4aSRandall Stewart 				if (net == (TAILQ_NEXT(net, sctp_next))) {
1446f8829a4aSRandall Stewart 					panic("Corrupt net list");
1447f8829a4aSRandall Stewart 				}
1448f8829a4aSRandall Stewart #endif
1449f8829a4aSRandall Stewart 				if (net->ro._l_addr.sa.sa_family !=
1450f8829a4aSRandall Stewart 				    remote->sa_family) {
1451f8829a4aSRandall Stewart 					/* not the same family */
1452f8829a4aSRandall Stewart 					continue;
1453f8829a4aSRandall Stewart 				}
14545e2c2d87SRandall Stewart 				switch (remote->sa_family) {
1455e6194c2eSMichael Tuexen #ifdef INET
14565e2c2d87SRandall Stewart 				case AF_INET:
14575e2c2d87SRandall Stewart 					{
14585e2c2d87SRandall Stewart 						struct sockaddr_in *sin,
14595e2c2d87SRandall Stewart 						           *rsin;
1460f8829a4aSRandall Stewart 
1461f8829a4aSRandall Stewart 						sin = (struct sockaddr_in *)
1462f8829a4aSRandall Stewart 						    &net->ro._l_addr;
1463f8829a4aSRandall Stewart 						rsin = (struct sockaddr_in *)remote;
1464f8829a4aSRandall Stewart 						if (sin->sin_addr.s_addr ==
1465f8829a4aSRandall Stewart 						    rsin->sin_addr.s_addr) {
1466f8829a4aSRandall Stewart 							/* found it */
1467f8829a4aSRandall Stewart 							if (netp != NULL) {
1468f8829a4aSRandall Stewart 								*netp = net;
1469f8829a4aSRandall Stewart 							}
1470f8829a4aSRandall Stewart 							if (locked_tcb == NULL) {
1471f8829a4aSRandall Stewart 								SCTP_INP_DECR_REF(inp);
1472f8829a4aSRandall Stewart 							} else if (locked_tcb != stcb) {
1473f8829a4aSRandall Stewart 								SCTP_TCB_LOCK(locked_tcb);
1474f8829a4aSRandall Stewart 							}
1475c4739e2fSRandall Stewart 							if (locked_tcb) {
1476c4739e2fSRandall Stewart 								atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1477c4739e2fSRandall Stewart 							}
1478f8829a4aSRandall Stewart 							SCTP_INP_WUNLOCK(inp);
1479f8829a4aSRandall Stewart 							SCTP_INP_INFO_RUNLOCK();
1480f8829a4aSRandall Stewart 							return (stcb);
1481f8829a4aSRandall Stewart 						}
14825e2c2d87SRandall Stewart 						break;
14835e2c2d87SRandall Stewart 					}
1484e6194c2eSMichael Tuexen #endif
14855e2c2d87SRandall Stewart #ifdef INET6
14865e2c2d87SRandall Stewart 				case AF_INET6:
14875e2c2d87SRandall Stewart 					{
14885e2c2d87SRandall Stewart 						struct sockaddr_in6 *sin6,
14895e2c2d87SRandall Stewart 						            *rsin6;
1490f8829a4aSRandall Stewart 
1491f8829a4aSRandall Stewart 						sin6 = (struct sockaddr_in6 *)
1492f8829a4aSRandall Stewart 						    &net->ro._l_addr;
1493f8829a4aSRandall Stewart 						rsin6 = (struct sockaddr_in6 *)remote;
1494c54a18d2SRandall Stewart 						if (SCTP6_ARE_ADDR_EQUAL(sin6,
1495c54a18d2SRandall Stewart 						    rsin6)) {
1496f8829a4aSRandall Stewart 							/* found it */
1497f8829a4aSRandall Stewart 							if (netp != NULL) {
1498f8829a4aSRandall Stewart 								*netp = net;
1499f8829a4aSRandall Stewart 							}
1500f8829a4aSRandall Stewart 							if (locked_tcb == NULL) {
1501f8829a4aSRandall Stewart 								SCTP_INP_DECR_REF(inp);
1502f8829a4aSRandall Stewart 							} else if (locked_tcb != stcb) {
1503f8829a4aSRandall Stewart 								SCTP_TCB_LOCK(locked_tcb);
1504f8829a4aSRandall Stewart 							}
1505c4739e2fSRandall Stewart 							if (locked_tcb) {
1506c4739e2fSRandall Stewart 								atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1507c4739e2fSRandall Stewart 							}
1508f8829a4aSRandall Stewart 							SCTP_INP_WUNLOCK(inp);
1509f8829a4aSRandall Stewart 							SCTP_INP_INFO_RUNLOCK();
1510f8829a4aSRandall Stewart 							return (stcb);
1511f8829a4aSRandall Stewart 						}
15125e2c2d87SRandall Stewart 						break;
15135e2c2d87SRandall Stewart 					}
15145e2c2d87SRandall Stewart #endif
15155e2c2d87SRandall Stewart 				default:
15165e2c2d87SRandall Stewart 					/* TSNH */
15175e2c2d87SRandall Stewart 					break;
1518f8829a4aSRandall Stewart 				}
1519f8829a4aSRandall Stewart 			}
1520f8829a4aSRandall Stewart 			SCTP_TCB_UNLOCK(stcb);
1521f8829a4aSRandall Stewart 		}
1522f8829a4aSRandall Stewart 	}
1523f8829a4aSRandall Stewart null_return:
1524f8829a4aSRandall Stewart 	/* clean up for returning null */
1525f8829a4aSRandall Stewart 	if (locked_tcb) {
1526f8829a4aSRandall Stewart 		SCTP_TCB_LOCK(locked_tcb);
1527c4739e2fSRandall Stewart 		atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1528f8829a4aSRandall Stewart 	}
1529f8829a4aSRandall Stewart 	SCTP_INP_WUNLOCK(inp);
1530f8829a4aSRandall Stewart 	SCTP_INP_INFO_RUNLOCK();
1531f8829a4aSRandall Stewart 	/* not found */
1532f8829a4aSRandall Stewart 	return (NULL);
1533f8829a4aSRandall Stewart }
1534f8829a4aSRandall Stewart 
1535f8829a4aSRandall Stewart /*
1536f8829a4aSRandall Stewart  * Find an association for a specific endpoint using the association id given
1537f8829a4aSRandall Stewart  * out in the COMM_UP notification
1538f8829a4aSRandall Stewart  */
1539f8829a4aSRandall Stewart struct sctp_tcb *
1540830d754dSRandall Stewart sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1541f8829a4aSRandall Stewart {
1542f8829a4aSRandall Stewart 	/*
1543f8829a4aSRandall Stewart 	 * Use my the assoc_id to find a endpoint
1544f8829a4aSRandall Stewart 	 */
1545f8829a4aSRandall Stewart 	struct sctpasochead *head;
1546f8829a4aSRandall Stewart 	struct sctp_tcb *stcb;
1547f8829a4aSRandall Stewart 	uint32_t id;
1548f8829a4aSRandall Stewart 
1549830d754dSRandall Stewart 	if (inp == NULL) {
1550830d754dSRandall Stewart 		SCTP_PRINTF("TSNH ep_associd\n");
1551f8829a4aSRandall Stewart 		return (NULL);
1552f8829a4aSRandall Stewart 	}
1553830d754dSRandall Stewart 	if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1554830d754dSRandall Stewart 		SCTP_PRINTF("TSNH ep_associd0\n");
1555830d754dSRandall Stewart 		return (NULL);
1556830d754dSRandall Stewart 	}
1557f8829a4aSRandall Stewart 	id = (uint32_t)asoc_id;
1558830d754dSRandall Stewart 	head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
1559f8829a4aSRandall Stewart 	if (head == NULL) {
1560f8829a4aSRandall Stewart 		/* invalid id TSNH */
1561830d754dSRandall Stewart 		SCTP_PRINTF("TSNH ep_associd1\n");
1562f8829a4aSRandall Stewart 		return (NULL);
1563f8829a4aSRandall Stewart 	}
1564830d754dSRandall Stewart 	LIST_FOREACH(stcb, head, sctp_tcbasocidhash) {
1565f8829a4aSRandall Stewart 		if (stcb->asoc.assoc_id == id) {
1566f8829a4aSRandall Stewart 			if (inp != stcb->sctp_ep) {
1567f8829a4aSRandall Stewart 				/*
1568f8829a4aSRandall Stewart 				 * some other guy has the same id active (id
1569f8829a4aSRandall Stewart 				 * collision ??).
1570f8829a4aSRandall Stewart 				 */
1571830d754dSRandall Stewart 				SCTP_PRINTF("TSNH ep_associd2\n");
1572f8829a4aSRandall Stewart 				continue;
1573f8829a4aSRandall Stewart 			}
1574fb8fb8f8SRandall Stewart 			if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1575fb8fb8f8SRandall Stewart 				continue;
1576fb8fb8f8SRandall Stewart 			}
1577f8829a4aSRandall Stewart 			if (want_lock) {
1578f8829a4aSRandall Stewart 				SCTP_TCB_LOCK(stcb);
1579f8829a4aSRandall Stewart 			}
1580f8829a4aSRandall Stewart 			return (stcb);
1581f8829a4aSRandall Stewart 		}
1582f8829a4aSRandall Stewart 	}
1583f8829a4aSRandall Stewart 	return (NULL);
1584f8829a4aSRandall Stewart }
1585830d754dSRandall Stewart 
1586830d754dSRandall Stewart struct sctp_tcb *
1587830d754dSRandall Stewart sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1588830d754dSRandall Stewart {
1589830d754dSRandall Stewart 	struct sctp_tcb *stcb;
1590830d754dSRandall Stewart 
1591830d754dSRandall Stewart 	SCTP_INP_RLOCK(inp);
1592830d754dSRandall Stewart 	stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
1593830d754dSRandall Stewart 	SCTP_INP_RUNLOCK(inp);
1594f8829a4aSRandall Stewart 	return (stcb);
1595f8829a4aSRandall Stewart }
1596f8829a4aSRandall Stewart 
1597a1cb341bSMichael Tuexen /*
1598a1cb341bSMichael Tuexen  * Endpoint probe expects that the INP_INFO is locked.
1599a1cb341bSMichael Tuexen  */
1600f8829a4aSRandall Stewart static struct sctp_inpcb *
1601f8829a4aSRandall Stewart sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head,
160242551e99SRandall Stewart     uint16_t lport, uint32_t vrf_id)
1603f8829a4aSRandall Stewart {
1604f8829a4aSRandall Stewart 	struct sctp_inpcb *inp;
1605f8829a4aSRandall Stewart 	struct sctp_laddr *laddr;
1606e6194c2eSMichael Tuexen #ifdef INET
1607e6194c2eSMichael Tuexen 	struct sockaddr_in *sin;
1608e6194c2eSMichael Tuexen #endif
16095e2c2d87SRandall Stewart #ifdef INET6
1610e6194c2eSMichael Tuexen 	struct sockaddr_in6 *sin6;
16115e2c2d87SRandall Stewart 	struct sockaddr_in6 *intf_addr6;
16125e2c2d87SRandall Stewart #endif
161342551e99SRandall Stewart 	int fnd;
1614f8829a4aSRandall Stewart 
1615e6194c2eSMichael Tuexen #ifdef INET
1616f8829a4aSRandall Stewart 	sin = NULL;
1617e6194c2eSMichael Tuexen #endif
16185e2c2d87SRandall Stewart #ifdef INET6
16195e2c2d87SRandall Stewart 	sin6 = NULL;
16205e2c2d87SRandall Stewart #endif
16215e2c2d87SRandall Stewart 	switch (nam->sa_family) {
1622e6194c2eSMichael Tuexen #ifdef INET
16235e2c2d87SRandall Stewart 	case AF_INET:
16245e2c2d87SRandall Stewart 		sin = (struct sockaddr_in *)nam;
16255e2c2d87SRandall Stewart 		break;
1626e6194c2eSMichael Tuexen #endif
16275e2c2d87SRandall Stewart #ifdef INET6
16285e2c2d87SRandall Stewart 	case AF_INET6:
16295e2c2d87SRandall Stewart 		sin6 = (struct sockaddr_in6 *)nam;
16305e2c2d87SRandall Stewart 		break;
16315e2c2d87SRandall Stewart #endif
16325e2c2d87SRandall Stewart 	default:
1633f8829a4aSRandall Stewart 		/* unsupported family */
1634f8829a4aSRandall Stewart 		return (NULL);
1635f8829a4aSRandall Stewart 	}
16366d9e8f2bSRandall Stewart 
1637f8829a4aSRandall Stewart 	if (head == NULL)
1638f8829a4aSRandall Stewart 		return (NULL);
1639830d754dSRandall Stewart 
1640f8829a4aSRandall Stewart 	LIST_FOREACH(inp, head, sctp_hash) {
1641f8829a4aSRandall Stewart 		SCTP_INP_RLOCK(inp);
1642f8829a4aSRandall Stewart 		if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1643f8829a4aSRandall Stewart 			SCTP_INP_RUNLOCK(inp);
1644f8829a4aSRandall Stewart 			continue;
1645f8829a4aSRandall Stewart 		}
1646f8829a4aSRandall Stewart 		if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) &&
1647f8829a4aSRandall Stewart 		    (inp->sctp_lport == lport)) {
1648f8829a4aSRandall Stewart 			/* got it */
16496ba22f19SMichael Tuexen 			switch (nam->sa_family) {
1650e6194c2eSMichael Tuexen #ifdef INET
16516ba22f19SMichael Tuexen 			case AF_INET:
16526ba22f19SMichael Tuexen 				if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
165344b7479bSRandall Stewart 				    SCTP_IPV6_V6ONLY(inp)) {
1654b7b84c0eSMichael Tuexen 					/*
1655b7b84c0eSMichael Tuexen 					 * IPv4 on a IPv6 socket with ONLY
1656b7b84c0eSMichael Tuexen 					 * IPv6 set
1657b7b84c0eSMichael Tuexen 					 */
1658f8829a4aSRandall Stewart 					SCTP_INP_RUNLOCK(inp);
1659f8829a4aSRandall Stewart 					continue;
1660f8829a4aSRandall Stewart 				}
16616ba22f19SMichael Tuexen 				if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
16626ba22f19SMichael Tuexen 				    &sin->sin_addr) != 0) {
16636ba22f19SMichael Tuexen 					SCTP_INP_RUNLOCK(inp);
16646ba22f19SMichael Tuexen 					continue;
16656ba22f19SMichael Tuexen 				}
16666ba22f19SMichael Tuexen 				break;
1667e6194c2eSMichael Tuexen #endif
1668e6194c2eSMichael Tuexen #ifdef INET6
16696ba22f19SMichael Tuexen 			case AF_INET6:
1670b7b84c0eSMichael Tuexen 				/*
1671b7b84c0eSMichael Tuexen 				 * A V6 address and the endpoint is NOT
1672b7b84c0eSMichael Tuexen 				 * bound V6
1673b7b84c0eSMichael Tuexen 				 */
16746ba22f19SMichael Tuexen 				if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
1675f8829a4aSRandall Stewart 					SCTP_INP_RUNLOCK(inp);
1676f8829a4aSRandall Stewart 					continue;
1677f8829a4aSRandall Stewart 				}
16786ba22f19SMichael Tuexen 				if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
16796ba22f19SMichael Tuexen 				    &sin6->sin6_addr) != 0) {
16806ba22f19SMichael Tuexen 					SCTP_INP_RUNLOCK(inp);
16816ba22f19SMichael Tuexen 					continue;
16826ba22f19SMichael Tuexen 				}
16836ba22f19SMichael Tuexen 				break;
1684e6194c2eSMichael Tuexen #endif
16856ba22f19SMichael Tuexen 			default:
16866ba22f19SMichael Tuexen 				break;
16876ba22f19SMichael Tuexen 			}
168842551e99SRandall Stewart 			/* does a VRF id match? */
168942551e99SRandall Stewart 			fnd = 0;
169042551e99SRandall Stewart 			if (inp->def_vrf_id == vrf_id)
169142551e99SRandall Stewart 				fnd = 1;
169242551e99SRandall Stewart 
1693f8829a4aSRandall Stewart 			SCTP_INP_RUNLOCK(inp);
169442551e99SRandall Stewart 			if (!fnd)
169542551e99SRandall Stewart 				continue;
1696f8829a4aSRandall Stewart 			return (inp);
1697f8829a4aSRandall Stewart 		}
1698f8829a4aSRandall Stewart 		SCTP_INP_RUNLOCK(inp);
1699f8829a4aSRandall Stewart 	}
1700e6194c2eSMichael Tuexen 	switch (nam->sa_family) {
1701e6194c2eSMichael Tuexen #ifdef INET
1702e6194c2eSMichael Tuexen 	case AF_INET:
1703e6194c2eSMichael Tuexen 		if (sin->sin_addr.s_addr == INADDR_ANY) {
1704f8829a4aSRandall Stewart 			/* Can't hunt for one that has no address specified */
1705f8829a4aSRandall Stewart 			return (NULL);
17065e2c2d87SRandall Stewart 		}
1707e6194c2eSMichael Tuexen 		break;
17085e2c2d87SRandall Stewart #endif
1709e6194c2eSMichael Tuexen #ifdef INET6
1710e6194c2eSMichael Tuexen 	case AF_INET6:
1711e6194c2eSMichael Tuexen 		if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1712e6194c2eSMichael Tuexen 			/* Can't hunt for one that has no address specified */
1713e6194c2eSMichael Tuexen 			return (NULL);
1714e6194c2eSMichael Tuexen 		}
1715e6194c2eSMichael Tuexen 		break;
1716e6194c2eSMichael Tuexen #endif
1717e6194c2eSMichael Tuexen 	default:
1718e6194c2eSMichael Tuexen 		break;
1719e6194c2eSMichael Tuexen 	}
1720f8829a4aSRandall Stewart 	/*
1721f8829a4aSRandall Stewart 	 * ok, not bound to all so see if we can find a EP bound to this
1722f8829a4aSRandall Stewart 	 * address.
1723f8829a4aSRandall Stewart 	 */
1724f8829a4aSRandall Stewart 	LIST_FOREACH(inp, head, sctp_hash) {
1725f8829a4aSRandall Stewart 		SCTP_INP_RLOCK(inp);
1726f8829a4aSRandall Stewart 		if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1727f8829a4aSRandall Stewart 			SCTP_INP_RUNLOCK(inp);
1728f8829a4aSRandall Stewart 			continue;
1729f8829a4aSRandall Stewart 		}
1730f8829a4aSRandall Stewart 		if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
1731f8829a4aSRandall Stewart 			SCTP_INP_RUNLOCK(inp);
1732f8829a4aSRandall Stewart 			continue;
1733f8829a4aSRandall Stewart 		}
1734f8829a4aSRandall Stewart 		/*
1735f8829a4aSRandall Stewart 		 * Ok this could be a likely candidate, look at all of its
1736f8829a4aSRandall Stewart 		 * addresses
1737f8829a4aSRandall Stewart 		 */
1738f8829a4aSRandall Stewart 		if (inp->sctp_lport != lport) {
1739f8829a4aSRandall Stewart 			SCTP_INP_RUNLOCK(inp);
1740f8829a4aSRandall Stewart 			continue;
1741f8829a4aSRandall Stewart 		}
174242551e99SRandall Stewart 		/* does a VRF id match? */
174342551e99SRandall Stewart 		fnd = 0;
174442551e99SRandall Stewart 		if (inp->def_vrf_id == vrf_id)
174542551e99SRandall Stewart 			fnd = 1;
174642551e99SRandall Stewart 
174742551e99SRandall Stewart 		if (!fnd) {
174842551e99SRandall Stewart 			SCTP_INP_RUNLOCK(inp);
174942551e99SRandall Stewart 			continue;
175042551e99SRandall Stewart 		}
1751f8829a4aSRandall Stewart 		LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1752f8829a4aSRandall Stewart 			if (laddr->ifa == NULL) {
1753ad81507eSRandall Stewart 				SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
17546e9c45e0SMichael Tuexen 				    __func__);
1755f8829a4aSRandall Stewart 				continue;
1756f8829a4aSRandall Stewart 			}
1757ad81507eSRandall Stewart 			SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ",
1758dd294dceSMichael Tuexen 			    (void *)laddr->ifa);
175942551e99SRandall Stewart 			if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1760ad81507eSRandall Stewart 				SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n");
1761f8829a4aSRandall Stewart 				continue;
1762f8829a4aSRandall Stewart 			}
176342551e99SRandall Stewart 			if (laddr->ifa->address.sa.sa_family == nam->sa_family) {
1764f8829a4aSRandall Stewart 				/* possible, see if it matches */
17655e2c2d87SRandall Stewart 				switch (nam->sa_family) {
1766e6194c2eSMichael Tuexen #ifdef INET
17675e2c2d87SRandall Stewart 				case AF_INET:
1768f8829a4aSRandall Stewart 					if (sin->sin_addr.s_addr ==
1769e6194c2eSMichael Tuexen 					    laddr->ifa->address.sin.sin_addr.s_addr) {
1770f8829a4aSRandall Stewart 						SCTP_INP_RUNLOCK(inp);
1771f8829a4aSRandall Stewart 						return (inp);
1772f8829a4aSRandall Stewart 					}
17735e2c2d87SRandall Stewart 					break;
1774e6194c2eSMichael Tuexen #endif
17755e2c2d87SRandall Stewart #ifdef INET6
17765e2c2d87SRandall Stewart 				case AF_INET6:
177742551e99SRandall Stewart 					intf_addr6 = &laddr->ifa->address.sin6;
1778c54a18d2SRandall Stewart 					if (SCTP6_ARE_ADDR_EQUAL(sin6,
1779c54a18d2SRandall Stewart 					    intf_addr6)) {
1780f8829a4aSRandall Stewart 						SCTP_INP_RUNLOCK(inp);
1781f8829a4aSRandall Stewart 						return (inp);
1782f8829a4aSRandall Stewart 					}
17835e2c2d87SRandall Stewart 					break;
17845e2c2d87SRandall Stewart #endif
1785f8829a4aSRandall Stewart 				}
1786f8829a4aSRandall Stewart 			}
1787f8829a4aSRandall Stewart 		}
1788f8829a4aSRandall Stewart 		SCTP_INP_RUNLOCK(inp);
1789f8829a4aSRandall Stewart 	}
1790f8829a4aSRandall Stewart 	return (NULL);
1791f8829a4aSRandall Stewart }
1792f8829a4aSRandall Stewart 
17936d9e8f2bSRandall Stewart static struct sctp_inpcb *
17946d9e8f2bSRandall Stewart sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
17956d9e8f2bSRandall Stewart {
17966d9e8f2bSRandall Stewart 	struct sctppcbhead *head;
17976d9e8f2bSRandall Stewart 	struct sctp_inpcb *t_inp;
17986d9e8f2bSRandall Stewart 	int fnd;
17996d9e8f2bSRandall Stewart 
18006d9e8f2bSRandall Stewart 	head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
18016d9e8f2bSRandall Stewart 	    SCTP_BASE_INFO(hashmark))];
18026d9e8f2bSRandall Stewart 	LIST_FOREACH(t_inp, head, sctp_hash) {
18036d9e8f2bSRandall Stewart 		if (t_inp->sctp_lport != lport) {
18046d9e8f2bSRandall Stewart 			continue;
18056d9e8f2bSRandall Stewart 		}
18066d9e8f2bSRandall Stewart 		/* is it in the VRF in question */
18076d9e8f2bSRandall Stewart 		fnd = 0;
18086d9e8f2bSRandall Stewart 		if (t_inp->def_vrf_id == vrf_id)
18096d9e8f2bSRandall Stewart 			fnd = 1;
18106d9e8f2bSRandall Stewart 		if (!fnd)
18116d9e8f2bSRandall Stewart 			continue;
18126d9e8f2bSRandall Stewart 
18136d9e8f2bSRandall Stewart 		/* This one is in use. */
18146d9e8f2bSRandall Stewart 		/* check the v6/v4 binding issue */
18156d9e8f2bSRandall Stewart 		if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
18166d9e8f2bSRandall Stewart 		    SCTP_IPV6_V6ONLY(t_inp)) {
18176d9e8f2bSRandall Stewart 			if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
18186d9e8f2bSRandall Stewart 				/* collision in V6 space */
18196d9e8f2bSRandall Stewart 				return (t_inp);
18206d9e8f2bSRandall Stewart 			} else {
18216d9e8f2bSRandall Stewart 				/* inp is BOUND_V4 no conflict */
18226d9e8f2bSRandall Stewart 				continue;
18236d9e8f2bSRandall Stewart 			}
18246d9e8f2bSRandall Stewart 		} else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
18256d9e8f2bSRandall Stewart 			/* t_inp is bound v4 and v6, conflict always */
18266d9e8f2bSRandall Stewart 			return (t_inp);
18276d9e8f2bSRandall Stewart 		} else {
18286d9e8f2bSRandall Stewart 			/* t_inp is bound only V4 */
18296d9e8f2bSRandall Stewart 			if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
18306d9e8f2bSRandall Stewart 			    SCTP_IPV6_V6ONLY(inp)) {
18316d9e8f2bSRandall Stewart 				/* no conflict */
18326d9e8f2bSRandall Stewart 				continue;
18336d9e8f2bSRandall Stewart 			}
18346d9e8f2bSRandall Stewart 			/* else fall through to conflict */
18356d9e8f2bSRandall Stewart 		}
18366d9e8f2bSRandall Stewart 		return (t_inp);
18376d9e8f2bSRandall Stewart 	}
18386d9e8f2bSRandall Stewart 	return (NULL);
18396d9e8f2bSRandall Stewart }
18406d9e8f2bSRandall Stewart 
18416d9e8f2bSRandall Stewart int
18426d9e8f2bSRandall Stewart sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
18436d9e8f2bSRandall Stewart {
18446d9e8f2bSRandall Stewart 	/* For 1-2-1 with port reuse */
18456d9e8f2bSRandall Stewart 	struct sctppcbhead *head;
18460426123fSMichael Tuexen 	struct sctp_inpcb *tinp, *ninp;
18476d9e8f2bSRandall Stewart 
18486d9e8f2bSRandall Stewart 	if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
18496d9e8f2bSRandall Stewart 		/* only works with port reuse on */
18506d9e8f2bSRandall Stewart 		return (-1);
18516d9e8f2bSRandall Stewart 	}
18526d9e8f2bSRandall Stewart 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) {
18536d9e8f2bSRandall Stewart 		return (0);
18546d9e8f2bSRandall Stewart 	}
18556d9e8f2bSRandall Stewart 	SCTP_INP_RUNLOCK(inp);
18560426123fSMichael Tuexen 	SCTP_INP_INFO_WLOCK();
18576d9e8f2bSRandall Stewart 	head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport,
18586d9e8f2bSRandall Stewart 	    SCTP_BASE_INFO(hashmark))];
18596d9e8f2bSRandall Stewart 	/* Kick out all non-listeners to the TCP hash */
18600426123fSMichael Tuexen 	LIST_FOREACH_SAFE(tinp, head, sctp_hash, ninp) {
18616d9e8f2bSRandall Stewart 		if (tinp->sctp_lport != inp->sctp_lport) {
18626d9e8f2bSRandall Stewart 			continue;
18636d9e8f2bSRandall Stewart 		}
18646d9e8f2bSRandall Stewart 		if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
18656d9e8f2bSRandall Stewart 			continue;
18666d9e8f2bSRandall Stewart 		}
18676d9e8f2bSRandall Stewart 		if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
18686d9e8f2bSRandall Stewart 			continue;
18696d9e8f2bSRandall Stewart 		}
18705d08768aSMichael Tuexen 		if (SCTP_IS_LISTENING(tinp)) {
18716d9e8f2bSRandall Stewart 			continue;
18726d9e8f2bSRandall Stewart 		}
18736d9e8f2bSRandall Stewart 		SCTP_INP_WLOCK(tinp);
18746d9e8f2bSRandall Stewart 		LIST_REMOVE(tinp, sctp_hash);
18756d9e8f2bSRandall Stewart 		head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))];
18766d9e8f2bSRandall Stewart 		tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
18776d9e8f2bSRandall Stewart 		LIST_INSERT_HEAD(head, tinp, sctp_hash);
18786d9e8f2bSRandall Stewart 		SCTP_INP_WUNLOCK(tinp);
18796d9e8f2bSRandall Stewart 	}
18806d9e8f2bSRandall Stewart 	SCTP_INP_WLOCK(inp);
18816d9e8f2bSRandall Stewart 	/* Pull from where he was */
18826d9e8f2bSRandall Stewart 	LIST_REMOVE(inp, sctp_hash);
18836d9e8f2bSRandall Stewart 	inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL;
18846d9e8f2bSRandall Stewart 	head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))];
18856d9e8f2bSRandall Stewart 	LIST_INSERT_HEAD(head, inp, sctp_hash);
18866d9e8f2bSRandall Stewart 	SCTP_INP_WUNLOCK(inp);
18876d9e8f2bSRandall Stewart 	SCTP_INP_RLOCK(inp);
18880426123fSMichael Tuexen 	SCTP_INP_INFO_WUNLOCK();
18896d9e8f2bSRandall Stewart 	return (0);
18906d9e8f2bSRandall Stewart }
18916d9e8f2bSRandall Stewart 
1892f8829a4aSRandall Stewart struct sctp_inpcb *
1893ad81507eSRandall Stewart sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock,
1894ad81507eSRandall Stewart     uint32_t vrf_id)
1895f8829a4aSRandall Stewart {
1896f8829a4aSRandall Stewart 	/*
1897f8829a4aSRandall Stewart 	 * First we check the hash table to see if someone has this port
1898f8829a4aSRandall Stewart 	 * bound with just the port.
1899f8829a4aSRandall Stewart 	 */
1900f8829a4aSRandall Stewart 	struct sctp_inpcb *inp;
1901f8829a4aSRandall Stewart 	struct sctppcbhead *head;
1902f8829a4aSRandall Stewart 	int lport;
1903034b88b0SMichael Tuexen 	unsigned int i;
1904e6194c2eSMichael Tuexen #ifdef INET
1905e6194c2eSMichael Tuexen 	struct sockaddr_in *sin;
1906e6194c2eSMichael Tuexen #endif
1907e6194c2eSMichael Tuexen #ifdef INET6
1908e6194c2eSMichael Tuexen 	struct sockaddr_in6 *sin6;
1909e6194c2eSMichael Tuexen #endif
1910e6194c2eSMichael Tuexen 
1911e6194c2eSMichael Tuexen 	switch (nam->sa_family) {
1912e6194c2eSMichael Tuexen #ifdef INET
1913e6194c2eSMichael Tuexen 	case AF_INET:
1914f8829a4aSRandall Stewart 		sin = (struct sockaddr_in *)nam;
191560990c0cSMichael Tuexen 		lport = sin->sin_port;
1916e6194c2eSMichael Tuexen 		break;
1917e6194c2eSMichael Tuexen #endif
1918e6194c2eSMichael Tuexen #ifdef INET6
1919e6194c2eSMichael Tuexen 	case AF_INET6:
1920f8829a4aSRandall Stewart 		sin6 = (struct sockaddr_in6 *)nam;
192160990c0cSMichael Tuexen 		lport = sin6->sin6_port;
1922e6194c2eSMichael Tuexen 		break;
1923e6194c2eSMichael Tuexen #endif
1924e6194c2eSMichael Tuexen 	default:
1925f8829a4aSRandall Stewart 		return (NULL);
1926f8829a4aSRandall Stewart 	}
1927f8829a4aSRandall Stewart 	/*
1928f8829a4aSRandall Stewart 	 * I could cheat here and just cast to one of the types but we will
1929f8829a4aSRandall Stewart 	 * do it right. It also provides the check against an Unsupported
1930f8829a4aSRandall Stewart 	 * type too.
1931f8829a4aSRandall Stewart 	 */
1932f8829a4aSRandall Stewart 	/* Find the head of the ALLADDR chain */
1933f8829a4aSRandall Stewart 	if (have_lock == 0) {
1934f8829a4aSRandall Stewart 		SCTP_INP_INFO_RLOCK();
1935f8829a4aSRandall Stewart 	}
1936b3f1ea41SRandall Stewart 	head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1937b3f1ea41SRandall Stewart 	    SCTP_BASE_INFO(hashmark))];
193842551e99SRandall Stewart 	inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1939f8829a4aSRandall Stewart 
1940f8829a4aSRandall Stewart 	/*
1941f8829a4aSRandall Stewart 	 * If the TCP model exists it could be that the main listening
1942034b88b0SMichael Tuexen 	 * endpoint is gone but there still exists a connected socket for
1943034b88b0SMichael Tuexen 	 * this guy. If so we can return the first one that we find. This
1944034b88b0SMichael Tuexen 	 * may NOT be the correct one so the caller should be wary on the
1945034b88b0SMichael Tuexen 	 * returned INP. Currently the only caller that sets find_tcp_pool
1946034b88b0SMichael Tuexen 	 * is in bindx where we are verifying that a user CAN bind the
1947034b88b0SMichael Tuexen 	 * address. He either has bound it already, or someone else has, or
1948034b88b0SMichael Tuexen 	 * its open to bind, so this is good enough.
1949f8829a4aSRandall Stewart 	 */
1950f8829a4aSRandall Stewart 	if (inp == NULL && find_tcp_pool) {
1951034b88b0SMichael Tuexen 		for (i = 0; i < SCTP_BASE_INFO(hashtcpmark) + 1; i++) {
1952034b88b0SMichael Tuexen 			head = &SCTP_BASE_INFO(sctp_tcpephash)[i];
195342551e99SRandall Stewart 			inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1954034b88b0SMichael Tuexen 			if (inp) {
1955034b88b0SMichael Tuexen 				break;
1956034b88b0SMichael Tuexen 			}
1957034b88b0SMichael Tuexen 		}
1958f8829a4aSRandall Stewart 	}
1959f8829a4aSRandall Stewart 	if (inp) {
1960f8829a4aSRandall Stewart 		SCTP_INP_INCR_REF(inp);
1961f8829a4aSRandall Stewart 	}
1962f8829a4aSRandall Stewart 	if (have_lock == 0) {
1963f8829a4aSRandall Stewart 		SCTP_INP_INFO_RUNLOCK();
1964f8829a4aSRandall Stewart 	}
1965f8829a4aSRandall Stewart 	return (inp);
1966f8829a4aSRandall Stewart }
1967f8829a4aSRandall Stewart 
1968f8829a4aSRandall Stewart /*
1969f8829a4aSRandall Stewart  * Find an association for an endpoint with the pointer to whom you want to
1970f8829a4aSRandall Stewart  * send to and the endpoint pointer. The address can be IPv4 or IPv6. We may
1971f8829a4aSRandall Stewart  * need to change the *to to some other struct like a mbuf...
1972f8829a4aSRandall Stewart  */
1973f8829a4aSRandall Stewart struct sctp_tcb *
1974b1754ad1SMichael Tuexen sctp_findassociation_addr_sa(struct sockaddr *from, struct sockaddr *to,
19759a972525SRandall Stewart     struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool,
19769a972525SRandall Stewart     uint32_t vrf_id)
1977f8829a4aSRandall Stewart {
1978c105859eSRandall Stewart 	struct sctp_inpcb *inp = NULL;
1979f0d44a49SMichael Tuexen 	struct sctp_tcb *stcb;
1980f8829a4aSRandall Stewart 
1981f8829a4aSRandall Stewart 	SCTP_INP_INFO_RLOCK();
1982f8829a4aSRandall Stewart 	if (find_tcp_pool) {
1983f8829a4aSRandall Stewart 		if (inp_p != NULL) {
1984f0d44a49SMichael Tuexen 			stcb = sctp_tcb_special_locate(inp_p, from, to, netp,
19859a972525SRandall Stewart 			    vrf_id);
1986f8829a4aSRandall Stewart 		} else {
1987f0d44a49SMichael Tuexen 			stcb = sctp_tcb_special_locate(&inp, from, to, netp,
19889a972525SRandall Stewart 			    vrf_id);
1989f8829a4aSRandall Stewart 		}
1990f0d44a49SMichael Tuexen 		if (stcb != NULL) {
1991f8829a4aSRandall Stewart 			SCTP_INP_INFO_RUNLOCK();
1992f0d44a49SMichael Tuexen 			return (stcb);
1993f8829a4aSRandall Stewart 		}
1994f8829a4aSRandall Stewart 	}
199542551e99SRandall Stewart 	inp = sctp_pcb_findep(to, 0, 1, vrf_id);
1996f8829a4aSRandall Stewart 	if (inp_p != NULL) {
1997f8829a4aSRandall Stewart 		*inp_p = inp;
1998f8829a4aSRandall Stewart 	}
1999f8829a4aSRandall Stewart 	SCTP_INP_INFO_RUNLOCK();
2000f8829a4aSRandall Stewart 	if (inp == NULL) {
2001f8829a4aSRandall Stewart 		return (NULL);
2002f8829a4aSRandall Stewart 	}
2003f8829a4aSRandall Stewart 	/*
2004f8829a4aSRandall Stewart 	 * ok, we have an endpoint, now lets find the assoc for it (if any)
2005f8829a4aSRandall Stewart 	 * we now place the source address or from in the to of the find
2006f8829a4aSRandall Stewart 	 * endpoint call. Since in reality this chain is used from the
2007f8829a4aSRandall Stewart 	 * inbound packet side.
2008f8829a4aSRandall Stewart 	 */
2009f8829a4aSRandall Stewart 	if (inp_p != NULL) {
2010f0d44a49SMichael Tuexen 		stcb = sctp_findassociation_ep_addr(inp_p, from, netp, to,
20119a972525SRandall Stewart 		    NULL);
2012f8829a4aSRandall Stewart 	} else {
2013f0d44a49SMichael Tuexen 		stcb = sctp_findassociation_ep_addr(&inp, from, netp, to,
20149a972525SRandall Stewart 		    NULL);
2015f8829a4aSRandall Stewart 	}
2016f0d44a49SMichael Tuexen 	return (stcb);
2017f8829a4aSRandall Stewart }
2018f8829a4aSRandall Stewart 
2019f8829a4aSRandall Stewart /*
2020f8829a4aSRandall Stewart  * This routine will grub through the mbuf that is a INIT or INIT-ACK and
2021f8829a4aSRandall Stewart  * find all addresses that the sender has specified in any address list. Each
2022f8829a4aSRandall Stewart  * address will be used to lookup the TCB and see if one exits.
2023f8829a4aSRandall Stewart  */
2024f8829a4aSRandall Stewart static struct sctp_tcb *
20257215cc1bSMichael Tuexen sctp_findassociation_special_addr(struct mbuf *m, int offset,
2026f8829a4aSRandall Stewart     struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp,
2027b1754ad1SMichael Tuexen     struct sockaddr *dst)
2028f8829a4aSRandall Stewart {
2029f4358911SMichael Tuexen 	struct sctp_paramhdr *phdr, param_buf;
2030b54ddf22SMichael Tuexen #if defined(INET) || defined(INET6)
2031f0d44a49SMichael Tuexen 	struct sctp_tcb *stcb;
2032b54ddf22SMichael Tuexen 	uint16_t ptype;
2033b54ddf22SMichael Tuexen #endif
2034b54ddf22SMichael Tuexen 	uint16_t plen;
2035e6194c2eSMichael Tuexen #ifdef INET
2036e6194c2eSMichael Tuexen 	struct sockaddr_in sin4;
2037e6194c2eSMichael Tuexen #endif
2038e6194c2eSMichael Tuexen #ifdef INET6
2039e6194c2eSMichael Tuexen 	struct sockaddr_in6 sin6;
2040e6194c2eSMichael Tuexen #endif
2041e6194c2eSMichael Tuexen 
2042e6194c2eSMichael Tuexen #ifdef INET
2043f8829a4aSRandall Stewart 	memset(&sin4, 0, sizeof(sin4));
2044f8829a4aSRandall Stewart 	sin4.sin_len = sizeof(sin4);
2045f8829a4aSRandall Stewart 	sin4.sin_family = AF_INET;
2046f8829a4aSRandall Stewart 	sin4.sin_port = sh->src_port;
2047e6194c2eSMichael Tuexen #endif
2048e6194c2eSMichael Tuexen #ifdef INET6
2049e6194c2eSMichael Tuexen 	memset(&sin6, 0, sizeof(sin6));
2050f8829a4aSRandall Stewart 	sin6.sin6_len = sizeof(sin6);
2051f8829a4aSRandall Stewart 	sin6.sin6_family = AF_INET6;
2052f8829a4aSRandall Stewart 	sin6.sin6_port = sh->src_port;
2053e6194c2eSMichael Tuexen #endif
2054f8829a4aSRandall Stewart 
2055f8829a4aSRandall Stewart 	offset += sizeof(struct sctp_init_chunk);
2056f8829a4aSRandall Stewart 
2057f4358911SMichael Tuexen 	phdr = sctp_get_next_param(m, offset, &param_buf, sizeof(param_buf));
2058f8829a4aSRandall Stewart 	while (phdr != NULL) {
2059f8829a4aSRandall Stewart 		/* now we must see if we want the parameter */
2060b54ddf22SMichael Tuexen #if defined(INET) || defined(INET6)
2061f8829a4aSRandall Stewart 		ptype = ntohs(phdr->param_type);
2062b54ddf22SMichael Tuexen #endif
2063f8829a4aSRandall Stewart 		plen = ntohs(phdr->param_length);
2064f8829a4aSRandall Stewart 		if (plen == 0) {
2065f8829a4aSRandall Stewart 			break;
2066f8829a4aSRandall Stewart 		}
2067e6194c2eSMichael Tuexen #ifdef INET
2068f8829a4aSRandall Stewart 		if (ptype == SCTP_IPV4_ADDRESS &&
2069f8829a4aSRandall Stewart 		    plen == sizeof(struct sctp_ipv4addr_param)) {
2070f8829a4aSRandall Stewart 			/* Get the rest of the address */
2071f4358911SMichael Tuexen 			struct sctp_ipv4addr_param ip4_param, *p4;
2072f8829a4aSRandall Stewart 
2073f8829a4aSRandall Stewart 			phdr = sctp_get_next_param(m, offset,
2074f4358911SMichael Tuexen 			    (struct sctp_paramhdr *)&ip4_param, sizeof(ip4_param));
2075f8829a4aSRandall Stewart 			if (phdr == NULL) {
2076f8829a4aSRandall Stewart 				return (NULL);
2077f8829a4aSRandall Stewart 			}
2078f8829a4aSRandall Stewart 			p4 = (struct sctp_ipv4addr_param *)phdr;
2079f8829a4aSRandall Stewart 			memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr));
2080f8829a4aSRandall Stewart 			/* look it up */
2081f0d44a49SMichael Tuexen 			stcb = sctp_findassociation_ep_addr(inp_p,
2082b1754ad1SMichael Tuexen 			    (struct sockaddr *)&sin4, netp, dst, NULL);
2083f0d44a49SMichael Tuexen 			if (stcb != NULL) {
2084f0d44a49SMichael Tuexen 				return (stcb);
2085f8829a4aSRandall Stewart 			}
2086e6194c2eSMichael Tuexen 		}
2087e6194c2eSMichael Tuexen #endif
2088e6194c2eSMichael Tuexen #ifdef INET6
2089e6194c2eSMichael Tuexen 		if (ptype == SCTP_IPV6_ADDRESS &&
2090f8829a4aSRandall Stewart 		    plen == sizeof(struct sctp_ipv6addr_param)) {
2091f8829a4aSRandall Stewart 			/* Get the rest of the address */
2092f4358911SMichael Tuexen 			struct sctp_ipv6addr_param ip6_param, *p6;
2093f8829a4aSRandall Stewart 
2094f8829a4aSRandall Stewart 			phdr = sctp_get_next_param(m, offset,
2095f4358911SMichael Tuexen 			    (struct sctp_paramhdr *)&ip6_param, sizeof(ip6_param));
2096f8829a4aSRandall Stewart 			if (phdr == NULL) {
2097f8829a4aSRandall Stewart 				return (NULL);
2098f8829a4aSRandall Stewart 			}
2099f8829a4aSRandall Stewart 			p6 = (struct sctp_ipv6addr_param *)phdr;
2100f8829a4aSRandall Stewart 			memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr));
2101f8829a4aSRandall Stewart 			/* look it up */
2102f0d44a49SMichael Tuexen 			stcb = sctp_findassociation_ep_addr(inp_p,
2103b1754ad1SMichael Tuexen 			    (struct sockaddr *)&sin6, netp, dst, NULL);
2104f0d44a49SMichael Tuexen 			if (stcb != NULL) {
2105f0d44a49SMichael Tuexen 				return (stcb);
2106f8829a4aSRandall Stewart 			}
2107f8829a4aSRandall Stewart 		}
2108e6194c2eSMichael Tuexen #endif
2109f8829a4aSRandall Stewart 		offset += SCTP_SIZE32(plen);
2110f4358911SMichael Tuexen 		phdr = sctp_get_next_param(m, offset, &param_buf,
2111f4358911SMichael Tuexen 		    sizeof(param_buf));
2112f8829a4aSRandall Stewart 	}
2113f8829a4aSRandall Stewart 	return (NULL);
2114f8829a4aSRandall Stewart }
2115f8829a4aSRandall Stewart 
2116f8829a4aSRandall Stewart static struct sctp_tcb *
2117830d754dSRandall Stewart sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag,
2118f8829a4aSRandall Stewart     struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport,
2119830d754dSRandall Stewart     uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
2120f8829a4aSRandall Stewart {
2121f8829a4aSRandall Stewart 	/*
2122f8829a4aSRandall Stewart 	 * Use my vtag to hash. If we find it we then verify the source addr
2123f8829a4aSRandall Stewart 	 * is in the assoc. If all goes well we save a bit on rec of a
2124f8829a4aSRandall Stewart 	 * packet.
2125f8829a4aSRandall Stewart 	 */
2126f8829a4aSRandall Stewart 	struct sctpasochead *head;
2127f8829a4aSRandall Stewart 	struct sctp_nets *net;
2128f8829a4aSRandall Stewart 	struct sctp_tcb *stcb;
2129f8829a4aSRandall Stewart 
2130f8829a4aSRandall Stewart 	SCTP_INP_INFO_RLOCK();
2131b3f1ea41SRandall Stewart 	head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag,
2132b3f1ea41SRandall Stewart 	    SCTP_BASE_INFO(hashasocmark))];
2133f8829a4aSRandall Stewart 	LIST_FOREACH(stcb, head, sctp_asocs) {
2134f8829a4aSRandall Stewart 		SCTP_INP_RLOCK(stcb->sctp_ep);
2135f8829a4aSRandall Stewart 		if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
2136f8829a4aSRandall Stewart 			SCTP_INP_RUNLOCK(stcb->sctp_ep);
2137d06c82f1SRandall Stewart 			continue;
2138f8829a4aSRandall Stewart 		}
21397215cc1bSMichael Tuexen 		if (stcb->sctp_ep->def_vrf_id != vrf_id) {
21407215cc1bSMichael Tuexen 			SCTP_INP_RUNLOCK(stcb->sctp_ep);
21417215cc1bSMichael Tuexen 			continue;
21427215cc1bSMichael Tuexen 		}
2143f8829a4aSRandall Stewart 		SCTP_TCB_LOCK(stcb);
2144f8829a4aSRandall Stewart 		SCTP_INP_RUNLOCK(stcb->sctp_ep);
2145f8829a4aSRandall Stewart 		if (stcb->asoc.my_vtag == vtag) {
2146f8829a4aSRandall Stewart 			/* candidate */
2147f8829a4aSRandall Stewart 			if (stcb->rport != rport) {
2148f8829a4aSRandall Stewart 				SCTP_TCB_UNLOCK(stcb);
2149f8829a4aSRandall Stewart 				continue;
2150f8829a4aSRandall Stewart 			}
2151f8829a4aSRandall Stewart 			if (stcb->sctp_ep->sctp_lport != lport) {
2152f8829a4aSRandall Stewart 				SCTP_TCB_UNLOCK(stcb);
2153f8829a4aSRandall Stewart 				continue;
2154f8829a4aSRandall Stewart 			}
2155fb8fb8f8SRandall Stewart 			if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
2156fb8fb8f8SRandall Stewart 				SCTP_TCB_UNLOCK(stcb);
2157fb8fb8f8SRandall Stewart 				continue;
2158fb8fb8f8SRandall Stewart 			}
2159830d754dSRandall Stewart 			/* RRS:Need toaddr check here */
2160830d754dSRandall Stewart 			if (sctp_does_stcb_own_this_addr(stcb, to) == 0) {
2161830d754dSRandall Stewart 				/* Endpoint does not own this address */
2162830d754dSRandall Stewart 				SCTP_TCB_UNLOCK(stcb);
2163830d754dSRandall Stewart 				continue;
2164830d754dSRandall Stewart 			}
2165830d754dSRandall Stewart 			if (remote_tag) {
2166b7b84c0eSMichael Tuexen 				/*
2167b7b84c0eSMichael Tuexen 				 * If we have both vtags that's all we match
2168b7b84c0eSMichael Tuexen 				 * on
2169b7b84c0eSMichael Tuexen 				 */
2170830d754dSRandall Stewart 				if (stcb->asoc.peer_vtag == remote_tag) {
2171830d754dSRandall Stewart 					/*
2172830d754dSRandall Stewart 					 * If both tags match we consider it
2173830d754dSRandall Stewart 					 * conclusive and check NO
2174830d754dSRandall Stewart 					 * source/destination addresses
2175830d754dSRandall Stewart 					 */
2176830d754dSRandall Stewart 					goto conclusive;
2177830d754dSRandall Stewart 				}
2178830d754dSRandall Stewart 			}
2179f8829a4aSRandall Stewart 			if (skip_src_check) {
2180830d754dSRandall Stewart 		conclusive:
2181830d754dSRandall Stewart 				if (from) {
218260990c0cSMichael Tuexen 					*netp = sctp_findnet(stcb, from);
2183830d754dSRandall Stewart 				} else {
2184f8829a4aSRandall Stewart 					*netp = NULL;	/* unknown */
2185830d754dSRandall Stewart 				}
2186ad81507eSRandall Stewart 				if (inp_p)
2187f8829a4aSRandall Stewart 					*inp_p = stcb->sctp_ep;
2188f8829a4aSRandall Stewart 				SCTP_INP_INFO_RUNLOCK();
2189f8829a4aSRandall Stewart 				return (stcb);
2190f8829a4aSRandall Stewart 			}
2191f8829a4aSRandall Stewart 			net = sctp_findnet(stcb, from);
2192f8829a4aSRandall Stewart 			if (net) {
2193f8829a4aSRandall Stewart 				/* yep its him. */
2194f8829a4aSRandall Stewart 				*netp = net;
2195f8829a4aSRandall Stewart 				SCTP_STAT_INCR(sctps_vtagexpress);
2196f8829a4aSRandall Stewart 				*inp_p = stcb->sctp_ep;
2197f8829a4aSRandall Stewart 				SCTP_INP_INFO_RUNLOCK();
2198f8829a4aSRandall Stewart 				return (stcb);
2199f8829a4aSRandall Stewart 			} else {
2200f8829a4aSRandall Stewart 				/*
2201f8829a4aSRandall Stewart 				 * not him, this should only happen in rare
2202f8829a4aSRandall Stewart 				 * cases so I peg it.
2203f8829a4aSRandall Stewart 				 */
2204f8829a4aSRandall Stewart 				SCTP_STAT_INCR(sctps_vtagbogus);
2205f8829a4aSRandall Stewart 			}
2206f8829a4aSRandall Stewart 		}
2207f8829a4aSRandall Stewart 		SCTP_TCB_UNLOCK(stcb);
2208f8829a4aSRandall Stewart 	}
2209f8829a4aSRandall Stewart 	SCTP_INP_INFO_RUNLOCK();
2210f8829a4aSRandall Stewart 	return (NULL);
2211f8829a4aSRandall Stewart }
2212f8829a4aSRandall Stewart 
2213f8829a4aSRandall Stewart /*
2214f8829a4aSRandall Stewart  * Find an association with the pointer to the inbound IP packet. This can be
2215f8829a4aSRandall Stewart  * a IPv4 or IPv6 packet.
2216f8829a4aSRandall Stewart  */
2217f8829a4aSRandall Stewart struct sctp_tcb *
22187215cc1bSMichael Tuexen sctp_findassociation_addr(struct mbuf *m, int offset,
2219b1754ad1SMichael Tuexen     struct sockaddr *src, struct sockaddr *dst,
2220f8829a4aSRandall Stewart     struct sctphdr *sh, struct sctp_chunkhdr *ch,
2221bff64a4dSRandall Stewart     struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2222f8829a4aSRandall Stewart {
2223f0d44a49SMichael Tuexen 	struct sctp_tcb *stcb;
2224f8829a4aSRandall Stewart 	struct sctp_inpcb *inp;
2225f8829a4aSRandall Stewart 
2226830d754dSRandall Stewart 	if (sh->v_tag) {
2227830d754dSRandall Stewart 		/* we only go down this path if vtag is non-zero */
2228f0d44a49SMichael Tuexen 		stcb = sctp_findassoc_by_vtag(src, dst, ntohl(sh->v_tag),
2229830d754dSRandall Stewart 		    inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0);
2230f0d44a49SMichael Tuexen 		if (stcb) {
2231f0d44a49SMichael Tuexen 			return (stcb);
2232830d754dSRandall Stewart 		}
2233830d754dSRandall Stewart 	}
22340053ed28SMichael Tuexen 
2235f8829a4aSRandall Stewart 	if (inp_p) {
2236f0d44a49SMichael Tuexen 		stcb = sctp_findassociation_addr_sa(src, dst, inp_p, netp,
223779b67faaSMichael Tuexen 		    1, vrf_id);
2238f8829a4aSRandall Stewart 		inp = *inp_p;
2239f8829a4aSRandall Stewart 	} else {
2240f0d44a49SMichael Tuexen 		stcb = sctp_findassociation_addr_sa(src, dst, &inp, netp,
224179b67faaSMichael Tuexen 		    1, vrf_id);
2242f8829a4aSRandall Stewart 	}
2243f0d44a49SMichael Tuexen 	SCTPDBG(SCTP_DEBUG_PCB1, "stcb:%p inp:%p\n", (void *)stcb, (void *)inp);
2244f0d44a49SMichael Tuexen 	if (stcb == NULL && inp) {
2245f8829a4aSRandall Stewart 		/* Found a EP but not this address */
2246f8829a4aSRandall Stewart 		if ((ch->chunk_type == SCTP_INITIATION) ||
2247f8829a4aSRandall Stewart 		    (ch->chunk_type == SCTP_INITIATION_ACK)) {
2248d06c82f1SRandall Stewart 			/*-
2249f8829a4aSRandall Stewart 			 * special hook, we do NOT return linp or an
2250f8829a4aSRandall Stewart 			 * association that is linked to an existing
2251f8829a4aSRandall Stewart 			 * association that is under the TCP pool (i.e. no
2252f8829a4aSRandall Stewart 			 * listener exists). The endpoint finding routine
2253b1ce21c6SRebecca Cran 			 * will always find a listener before examining the
2254f8829a4aSRandall Stewart 			 * TCP pool.
2255f8829a4aSRandall Stewart 			 */
2256f8829a4aSRandall Stewart 			if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
2257f8829a4aSRandall Stewart 				if (inp_p) {
2258f8829a4aSRandall Stewart 					*inp_p = NULL;
2259f8829a4aSRandall Stewart 				}
2260f8829a4aSRandall Stewart 				return (NULL);
2261f8829a4aSRandall Stewart 			}
2262f0d44a49SMichael Tuexen 			stcb = sctp_findassociation_special_addr(m,
2263b1754ad1SMichael Tuexen 			    offset, sh, &inp, netp, dst);
2264f8829a4aSRandall Stewart 			if (inp_p != NULL) {
2265f8829a4aSRandall Stewart 				*inp_p = inp;
2266f8829a4aSRandall Stewart 			}
2267f8829a4aSRandall Stewart 		}
2268f8829a4aSRandall Stewart 	}
2269f0d44a49SMichael Tuexen 	SCTPDBG(SCTP_DEBUG_PCB1, "stcb is %p\n", (void *)stcb);
2270f0d44a49SMichael Tuexen 	return (stcb);
2271f8829a4aSRandall Stewart }
2272f8829a4aSRandall Stewart 
2273f8829a4aSRandall Stewart /*
2274f8829a4aSRandall Stewart  * lookup an association by an ASCONF lookup address.
2275f8829a4aSRandall Stewart  * if the lookup address is 0.0.0.0 or ::0, use the vtag to do the lookup
2276f8829a4aSRandall Stewart  */
2277f8829a4aSRandall Stewart struct sctp_tcb *
22787215cc1bSMichael Tuexen sctp_findassociation_ep_asconf(struct mbuf *m, int offset,
2279b1754ad1SMichael Tuexen     struct sockaddr *dst, struct sctphdr *sh,
2280b1754ad1SMichael Tuexen     struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2281f8829a4aSRandall Stewart {
2282f8829a4aSRandall Stewart 	struct sctp_tcb *stcb;
228324aaac8dSMichael Tuexen 	union sctp_sockstore remote_store;
2284f4358911SMichael Tuexen 	struct sctp_paramhdr param_buf, *phdr;
2285f8829a4aSRandall Stewart 	int ptype;
2286f8829a4aSRandall Stewart 	int zero_address = 0;
2287e6194c2eSMichael Tuexen #ifdef INET
2288e6194c2eSMichael Tuexen 	struct sockaddr_in *sin;
2289e6194c2eSMichael Tuexen #endif
2290e6194c2eSMichael Tuexen #ifdef INET6
2291e6194c2eSMichael Tuexen 	struct sockaddr_in6 *sin6;
2292e6194c2eSMichael Tuexen #endif
2293f8829a4aSRandall Stewart 
2294f8829a4aSRandall Stewart 	memset(&remote_store, 0, sizeof(remote_store));
2295f8829a4aSRandall Stewart 	phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk),
2296f4358911SMichael Tuexen 	    &param_buf, sizeof(struct sctp_paramhdr));
2297f8829a4aSRandall Stewart 	if (phdr == NULL) {
2298ad81507eSRandall Stewart 		SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n",
22996e9c45e0SMichael Tuexen 		    __func__);
2300f8829a4aSRandall Stewart 		return NULL;
2301f8829a4aSRandall Stewart 	}
2302f8829a4aSRandall Stewart 	ptype = (int)((uint32_t)ntohs(phdr->param_type));
2303f8829a4aSRandall Stewart 	/* get the correlation address */
23045e2c2d87SRandall Stewart 	switch (ptype) {
23055e2c2d87SRandall Stewart #ifdef INET6
23065e2c2d87SRandall Stewart 	case SCTP_IPV6_ADDRESS:
23075e2c2d87SRandall Stewart 		{
2308f8829a4aSRandall Stewart 			/* ipv6 address param */
2309f8829a4aSRandall Stewart 			struct sctp_ipv6addr_param *p6, p6_buf;
2310f8829a4aSRandall Stewart 
2311f8829a4aSRandall Stewart 			if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) {
2312f8829a4aSRandall Stewart 				return NULL;
2313f8829a4aSRandall Stewart 			}
2314f8829a4aSRandall Stewart 			p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m,
2315f8829a4aSRandall Stewart 			    offset + sizeof(struct sctp_asconf_chunk),
2316f4358911SMichael Tuexen 			    &p6_buf.ph, sizeof(p6_buf));
2317f8829a4aSRandall Stewart 			if (p6 == NULL) {
2318ad81507eSRandall Stewart 				SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n",
23196e9c45e0SMichael Tuexen 				    __func__);
2320f8829a4aSRandall Stewart 				return (NULL);
2321f8829a4aSRandall Stewart 			}
232224aaac8dSMichael Tuexen 			sin6 = &remote_store.sin6;
2323f8829a4aSRandall Stewart 			sin6->sin6_family = AF_INET6;
2324f8829a4aSRandall Stewart 			sin6->sin6_len = sizeof(*sin6);
2325f8829a4aSRandall Stewart 			sin6->sin6_port = sh->src_port;
2326f8829a4aSRandall Stewart 			memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr));
2327f8829a4aSRandall Stewart 			if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
2328f8829a4aSRandall Stewart 				zero_address = 1;
23295e2c2d87SRandall Stewart 			break;
23305e2c2d87SRandall Stewart 		}
23315e2c2d87SRandall Stewart #endif
2332e6194c2eSMichael Tuexen #ifdef INET
23335e2c2d87SRandall Stewart 	case SCTP_IPV4_ADDRESS:
23345e2c2d87SRandall Stewart 		{
2335f8829a4aSRandall Stewart 			/* ipv4 address param */
2336f8829a4aSRandall Stewart 			struct sctp_ipv4addr_param *p4, p4_buf;
2337f8829a4aSRandall Stewart 
2338f8829a4aSRandall Stewart 			if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) {
2339f8829a4aSRandall Stewart 				return NULL;
2340f8829a4aSRandall Stewart 			}
2341f8829a4aSRandall Stewart 			p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m,
2342f8829a4aSRandall Stewart 			    offset + sizeof(struct sctp_asconf_chunk),
2343f4358911SMichael Tuexen 			    &p4_buf.ph, sizeof(p4_buf));
2344f8829a4aSRandall Stewart 			if (p4 == NULL) {
2345ad81507eSRandall Stewart 				SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n",
23466e9c45e0SMichael Tuexen 				    __func__);
2347f8829a4aSRandall Stewart 				return (NULL);
2348f8829a4aSRandall Stewart 			}
234924aaac8dSMichael Tuexen 			sin = &remote_store.sin;
2350f8829a4aSRandall Stewart 			sin->sin_family = AF_INET;
2351f8829a4aSRandall Stewart 			sin->sin_len = sizeof(*sin);
2352f8829a4aSRandall Stewart 			sin->sin_port = sh->src_port;
2353f8829a4aSRandall Stewart 			memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr));
2354f8829a4aSRandall Stewart 			if (sin->sin_addr.s_addr == INADDR_ANY)
2355f8829a4aSRandall Stewart 				zero_address = 1;
23565e2c2d87SRandall Stewart 			break;
23575e2c2d87SRandall Stewart 		}
2358e6194c2eSMichael Tuexen #endif
23595e2c2d87SRandall Stewart 	default:
2360f8829a4aSRandall Stewart 		/* invalid address param type */
2361f8829a4aSRandall Stewart 		return NULL;
2362f8829a4aSRandall Stewart 	}
2363f8829a4aSRandall Stewart 
2364f8829a4aSRandall Stewart 	if (zero_address) {
2365b1754ad1SMichael Tuexen 		stcb = sctp_findassoc_by_vtag(NULL, dst, ntohl(sh->v_tag), inp_p,
2366830d754dSRandall Stewart 		    netp, sh->src_port, sh->dest_port, 1, vrf_id, 0);
236763c6726eSMichael Tuexen 		if (stcb != NULL) {
236863c6726eSMichael Tuexen 			SCTP_INP_DECR_REF(*inp_p);
236963c6726eSMichael Tuexen 		}
2370f8829a4aSRandall Stewart 	} else {
2371f8829a4aSRandall Stewart 		stcb = sctp_findassociation_ep_addr(inp_p,
237224aaac8dSMichael Tuexen 		    &remote_store.sa, netp,
2373b1754ad1SMichael Tuexen 		    dst, NULL);
2374f8829a4aSRandall Stewart 	}
2375f8829a4aSRandall Stewart 	return (stcb);
2376f8829a4aSRandall Stewart }
2377f8829a4aSRandall Stewart 
2378f8829a4aSRandall Stewart /*
2379f8829a4aSRandall Stewart  * allocate a sctp_inpcb and setup a temporary binding to a port/all
2380f8829a4aSRandall Stewart  * addresses. This way if we don't get a bind we by default pick a ephemeral
2381f8829a4aSRandall Stewart  * port with all addresses bound.
2382f8829a4aSRandall Stewart  */
2383f8829a4aSRandall Stewart int
2384f4c93d24SRandall Stewart sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
2385f8829a4aSRandall Stewart {
2386f8829a4aSRandall Stewart 	/*
2387f8829a4aSRandall Stewart 	 * we get called when a new endpoint starts up. We need to allocate
2388f8829a4aSRandall Stewart 	 * the sctp_inpcb structure from the zone and init it. Mark it as
2389f8829a4aSRandall Stewart 	 * unbound and find a port that we can use as an ephemeral with
2390f8829a4aSRandall Stewart 	 * INADDR_ANY. If the user binds later no problem we can then add in
2391f8829a4aSRandall Stewart 	 * the specific addresses. And setup the default parameters for the
2392f8829a4aSRandall Stewart 	 * EP.
2393f8829a4aSRandall Stewart 	 */
2394f8829a4aSRandall Stewart 	int i, error;
2395f8829a4aSRandall Stewart 	struct sctp_inpcb *inp;
2396f8829a4aSRandall Stewart 	struct sctp_pcb *m;
2397f8829a4aSRandall Stewart 	struct timeval time;
2398f8829a4aSRandall Stewart 	sctp_sharedkey_t *null_key;
2399f8829a4aSRandall Stewart 
2400f8829a4aSRandall Stewart 	error = 0;
2401f8829a4aSRandall Stewart 
2402f8829a4aSRandall Stewart 	SCTP_INP_INFO_WLOCK();
2403b3f1ea41SRandall Stewart 	inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb);
2404f8829a4aSRandall Stewart 	if (inp == NULL) {
2405ad81507eSRandall Stewart 		SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n");
2406f8829a4aSRandall Stewart 		SCTP_INP_INFO_WUNLOCK();
2407c4739e2fSRandall Stewart 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2408f8829a4aSRandall Stewart 		return (ENOBUFS);
2409f8829a4aSRandall Stewart 	}
2410f8829a4aSRandall Stewart 	/* zap it */
24115ba7f91fSMichael Tuexen 	memset(inp, 0, sizeof(*inp));
2412f8829a4aSRandall Stewart 
2413f8829a4aSRandall Stewart 	/* bump generations */
2414f8829a4aSRandall Stewart 	/* setup socket pointers */
2415f8829a4aSRandall Stewart 	inp->sctp_socket = so;
2416f8829a4aSRandall Stewart 	inp->ip_inp.inp.inp_socket = so;
24176ba22f19SMichael Tuexen 	inp->ip_inp.inp.inp_cred = crhold(so->so_cred);
241858bdb691SMichael Tuexen #ifdef INET6
24193457ccdaSMichael Tuexen 	if (INP_SOCKAF(so) == AF_INET6) {
242058bdb691SMichael Tuexen 		if (MODULE_GLOBAL(ip6_auto_flowlabel)) {
242158bdb691SMichael Tuexen 			inp->ip_inp.inp.inp_flags |= IN6P_AUTOFLOWLABEL;
242258bdb691SMichael Tuexen 		}
24233457ccdaSMichael Tuexen 		if (MODULE_GLOBAL(ip6_v6only)) {
24243457ccdaSMichael Tuexen 			inp->ip_inp.inp.inp_flags |= IN6P_IPV6_V6ONLY;
24253457ccdaSMichael Tuexen 		}
24263457ccdaSMichael Tuexen 	}
242758bdb691SMichael Tuexen #endif
2428830d754dSRandall Stewart 	inp->sctp_associd_counter = 1;
242962c1ff9cSRandall Stewart 	inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT;
2430f8829a4aSRandall Stewart 	inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
243159b6d5beSMichael Tuexen 	inp->max_cwnd = 0;
243220083c2eSMichael Tuexen 	inp->sctp_cmt_on_off = SCTP_BASE_SYSCTL(sctp_cmt_on_off);
2433f342355aSMichael Tuexen 	inp->ecn_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_ecn_enable);
2434dd973b0eSMichael Tuexen 	inp->prsctp_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_pr_enable);
243597a0ca5bSMichael Tuexen 	inp->auth_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_auth_enable);
2436c79bec9cSMichael Tuexen 	inp->asconf_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_asconf_enable);
2437317e00efSMichael Tuexen 	inp->reconfig_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_reconfig_enable);
2438caea9879SMichael Tuexen 	inp->nrsack_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_nrsack_enable);
2439cb9b8e6fSMichael Tuexen 	inp->pktdrop_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_pktdrop_enable);
244044249214SRandall Stewart 	inp->idata_supported = 0;
244144249214SRandall Stewart 
2442d089f9b9SMichael Tuexen 	inp->fibnum = so->so_fibnum;
2443830d754dSRandall Stewart 	/* init the small hash table we use to track asocid <-> tcb */
2444830d754dSRandall Stewart 	inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark);
2445830d754dSRandall Stewart 	if (inp->sctp_asocidhash == NULL) {
24466ba22f19SMichael Tuexen 		crfree(inp->ip_inp.inp.inp_cred);
2447830d754dSRandall Stewart 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2448830d754dSRandall Stewart 		SCTP_INP_INFO_WUNLOCK();
24492c6b25b4SRandall Stewart 		return (ENOBUFS);
2450830d754dSRandall Stewart 	}
2451f8829a4aSRandall Stewart 	SCTP_INCR_EP_COUNT();
2452482444b4SRandall Stewart 	inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
2453f8829a4aSRandall Stewart 	SCTP_INP_INFO_WUNLOCK();
2454f8829a4aSRandall Stewart 
2455f8829a4aSRandall Stewart 	so->so_pcb = (caddr_t)inp;
2456f8829a4aSRandall Stewart 
24571a3b5ce2SMichael Tuexen 	if (SCTP_SO_TYPE(so) == SOCK_SEQPACKET) {
2458f8829a4aSRandall Stewart 		/* UDP style socket */
2459f8829a4aSRandall Stewart 		inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
2460f8829a4aSRandall Stewart 		    SCTP_PCB_FLAGS_UNBOUND);
2461f8829a4aSRandall Stewart 		/* Be sure it is NON-BLOCKING IO for UDP */
246242551e99SRandall Stewart 		/* SCTP_SET_SO_NBIO(so); */
246342551e99SRandall Stewart 	} else if (SCTP_SO_TYPE(so) == SOCK_STREAM) {
2464f8829a4aSRandall Stewart 		/* TCP style socket */
2465f8829a4aSRandall Stewart 		inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
2466f8829a4aSRandall Stewart 		    SCTP_PCB_FLAGS_UNBOUND);
2467f8829a4aSRandall Stewart 		/* Be sure we have blocking IO by default */
2468afb908daSMichael Tuexen 		SOCK_LOCK(so);
246942551e99SRandall Stewart 		SCTP_CLEAR_SO_NBIO(so);
2470afb908daSMichael Tuexen 		SOCK_UNLOCK(so);
2471f8829a4aSRandall Stewart 	} else {
2472f8829a4aSRandall Stewart 		/*
2473f8829a4aSRandall Stewart 		 * unsupported socket type (RAW, etc)- in case we missed it
2474f8829a4aSRandall Stewart 		 * in protosw
2475f8829a4aSRandall Stewart 		 */
2476c4739e2fSRandall Stewart 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
247741291ef0SRandall Stewart 		so->so_pcb = NULL;
24786ba22f19SMichael Tuexen 		crfree(inp->ip_inp.inp.inp_cred);
2479b3f1ea41SRandall Stewart 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2480f8829a4aSRandall Stewart 		return (EOPNOTSUPP);
2481f8829a4aSRandall Stewart 	}
2482b3f1ea41SRandall Stewart 	if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) {
2483d61a0ae0SRandall Stewart 		sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2484c4739e2fSRandall Stewart 		sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2485b3f1ea41SRandall Stewart 	} else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) {
2486c4739e2fSRandall Stewart 		sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2487c4739e2fSRandall Stewart 		sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2488b3f1ea41SRandall Stewart 	} else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) {
2489c4739e2fSRandall Stewart 		sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2490c4739e2fSRandall Stewart 		sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2491c4739e2fSRandall Stewart 	}
2492b3f1ea41SRandall Stewart 	inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize),
2493f8829a4aSRandall Stewart 	    &inp->sctp_hashmark);
2494f8829a4aSRandall Stewart 	if (inp->sctp_tcbhash == NULL) {
2495ad81507eSRandall Stewart 		SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
2496c4739e2fSRandall Stewart 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
249741291ef0SRandall Stewart 		so->so_pcb = NULL;
24986ba22f19SMichael Tuexen 		crfree(inp->ip_inp.inp.inp_cred);
2499b3f1ea41SRandall Stewart 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2500f8829a4aSRandall Stewart 		return (ENOBUFS);
2501f8829a4aSRandall Stewart 	}
2502f4c93d24SRandall Stewart 	inp->def_vrf_id = vrf_id;
250342551e99SRandall Stewart 
2504f8829a4aSRandall Stewart 	SCTP_INP_INFO_WLOCK();
2505f8829a4aSRandall Stewart 	SCTP_INP_LOCK_INIT(inp);
2506e1461651SRandall Stewart 	INP_LOCK_INIT(&inp->ip_inp.inp, "inp", "sctpinp");
2507f8829a4aSRandall Stewart 	SCTP_INP_READ_INIT(inp);
2508f8829a4aSRandall Stewart 	SCTP_ASOC_CREATE_LOCK_INIT(inp);
2509f8829a4aSRandall Stewart 	/* lock the new ep */
2510f8829a4aSRandall Stewart 	SCTP_INP_WLOCK(inp);
2511f8829a4aSRandall Stewart 
2512f8829a4aSRandall Stewart 	/* add it to the info area */
2513b3f1ea41SRandall Stewart 	LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list);
2514f8829a4aSRandall Stewart 	SCTP_INP_INFO_WUNLOCK();
2515f8829a4aSRandall Stewart 
2516f8829a4aSRandall Stewart 	TAILQ_INIT(&inp->read_queue);
2517f8829a4aSRandall Stewart 	LIST_INIT(&inp->sctp_addr_list);
251842551e99SRandall Stewart 
2519f8829a4aSRandall Stewart 	LIST_INIT(&inp->sctp_asoc_list);
2520f8829a4aSRandall Stewart 
2521a5d547adSRandall Stewart #ifdef SCTP_TRACK_FREED_ASOCS
2522a5d547adSRandall Stewart 	/* TEMP CODE */
2523a5d547adSRandall Stewart 	LIST_INIT(&inp->sctp_asoc_free_list);
2524a5d547adSRandall Stewart #endif
2525f8829a4aSRandall Stewart 	/* Init the timer structure for signature change */
2526139bc87fSRandall Stewart 	SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer);
2527f8829a4aSRandall Stewart 	inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE;
2528f8829a4aSRandall Stewart 
2529f8829a4aSRandall Stewart 	/* now init the actual endpoint default data */
2530f8829a4aSRandall Stewart 	m = &inp->sctp_ep;
2531f8829a4aSRandall Stewart 
2532f8829a4aSRandall Stewart 	/* setup the base timeout information */
253325ec3553SMichael Tuexen 	m->sctp_timeoutticks[SCTP_TIMER_SEND] = sctp_secs_to_ticks(SCTP_SEND_SEC);	/* needed ? */
253425ec3553SMichael Tuexen 	m->sctp_timeoutticks[SCTP_TIMER_INIT] = sctp_secs_to_ticks(SCTP_INIT_SEC);	/* needed ? */
253525ec3553SMichael Tuexen 	m->sctp_timeoutticks[SCTP_TIMER_RECV] = sctp_msecs_to_ticks(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default));
253625ec3553SMichael Tuexen 	m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = sctp_msecs_to_ticks(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default));
253725ec3553SMichael Tuexen 	m->sctp_timeoutticks[SCTP_TIMER_PMTU] = sctp_secs_to_ticks(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default));
253825ec3553SMichael Tuexen 	m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = sctp_secs_to_ticks(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default));
253925ec3553SMichael Tuexen 	m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = sctp_secs_to_ticks(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default));
2540f8829a4aSRandall Stewart 	/* all max/min max are in ms */
2541b3f1ea41SRandall Stewart 	m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default);
2542b3f1ea41SRandall Stewart 	m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default);
2543b3f1ea41SRandall Stewart 	m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default);
2544b3f1ea41SRandall Stewart 	m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default);
2545b3f1ea41SRandall Stewart 	m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default);
2546b3f1ea41SRandall Stewart 	m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default);
2547b3f1ea41SRandall Stewart 	m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default);
2548b3f1ea41SRandall Stewart 	m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default);
2549ca85e948SMichael Tuexen 	m->def_net_pf_threshold = SCTP_BASE_SYSCTL(sctp_path_pf_threshold);
2550f8829a4aSRandall Stewart 	m->sctp_sws_sender = SCTP_SWS_SENDER_DEF;
2551f8829a4aSRandall Stewart 	m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF;
2552b3f1ea41SRandall Stewart 	m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default);
2553899288aeSRandall Stewart 	m->fr_max_burst = SCTP_BASE_SYSCTL(sctp_fr_max_burst_default);
2554899288aeSRandall Stewart 
2555b3f1ea41SRandall Stewart 	m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module);
2556f7a77f6fSMichael Tuexen 	m->sctp_default_ss_module = SCTP_BASE_SYSCTL(sctp_default_ss_module);
2557ee1ccd92SMichael Tuexen 	m->max_open_streams_intome = SCTP_BASE_SYSCTL(sctp_nr_incoming_streams_default);
2558f8829a4aSRandall Stewart 	/* number of streams to pre-open on a association */
2559b3f1ea41SRandall Stewart 	m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default);
2560f8829a4aSRandall Stewart 
256128a6addeSMichael Tuexen 	m->default_mtu = 0;
2562f8829a4aSRandall Stewart 	/* Add adaptation cookie */
25632416af26SMichael Tuexen 	m->adaptation_layer_indicator = 0;
25642416af26SMichael Tuexen 	m->adaptation_layer_indicator_provided = 0;
2565f8829a4aSRandall Stewart 
2566f8829a4aSRandall Stewart 	/* seed random number generator */
2567f8829a4aSRandall Stewart 	m->random_counter = 1;
2568f8829a4aSRandall Stewart 	m->store_at = SCTP_SIGNATURE_SIZE;
2569139bc87fSRandall Stewart 	SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers));
2570f8829a4aSRandall Stewart 	sctp_fill_random_store(m);
2571f8829a4aSRandall Stewart 
2572f8829a4aSRandall Stewart 	/* Minimum cookie size */
2573f8829a4aSRandall Stewart 	m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) +
2574f8829a4aSRandall Stewart 	    sizeof(struct sctp_state_cookie);
2575f8829a4aSRandall Stewart 	m->size_of_a_cookie += SCTP_SIGNATURE_SIZE;
2576f8829a4aSRandall Stewart 
2577f8829a4aSRandall Stewart 	/* Setup the initial secret */
25786e55db54SRandall Stewart 	(void)SCTP_GETTIME_TIMEVAL(&time);
2579f8829a4aSRandall Stewart 	m->time_of_secret_change = time.tv_sec;
2580f8829a4aSRandall Stewart 
2581f8829a4aSRandall Stewart 	for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
2582f8829a4aSRandall Stewart 		m->secret_key[0][i] = sctp_select_initial_TSN(m);
2583f8829a4aSRandall Stewart 	}
2584f8829a4aSRandall Stewart 	sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
2585f8829a4aSRandall Stewart 
2586f8829a4aSRandall Stewart 	/* How long is a cookie good for ? */
258725ec3553SMichael Tuexen 	m->def_cookie_life = sctp_msecs_to_ticks(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default));
2588f8829a4aSRandall Stewart 	/*
2589f8829a4aSRandall Stewart 	 * Initialize authentication parameters
2590f8829a4aSRandall Stewart 	 */
2591f8829a4aSRandall Stewart 	m->local_hmacs = sctp_default_supported_hmaclist();
2592f8829a4aSRandall Stewart 	m->local_auth_chunks = sctp_alloc_chunklist();
2593c79bec9cSMichael Tuexen 	if (inp->asconf_supported) {
2594c79bec9cSMichael Tuexen 		sctp_auth_add_chunk(SCTP_ASCONF, m->local_auth_chunks);
2595c79bec9cSMichael Tuexen 		sctp_auth_add_chunk(SCTP_ASCONF_ACK, m->local_auth_chunks);
2596c79bec9cSMichael Tuexen 	}
259758bdb691SMichael Tuexen 	m->default_dscp = 0;
259858bdb691SMichael Tuexen #ifdef INET6
259958bdb691SMichael Tuexen 	m->default_flowlabel = 0;
260058bdb691SMichael Tuexen #endif
2601c9c58059SMichael Tuexen 	m->port = 0;		/* encapsulation disabled by default */
2602f8829a4aSRandall Stewart 	LIST_INIT(&m->shared_keys);
2603f8829a4aSRandall Stewart 	/* add default NULL key as key id 0 */
2604f8829a4aSRandall Stewart 	null_key = sctp_alloc_sharedkey();
2605f8829a4aSRandall Stewart 	sctp_insert_sharedkey(&m->shared_keys, null_key);
2606f8829a4aSRandall Stewart 	SCTP_INP_WUNLOCK(inp);
2607f8829a4aSRandall Stewart #ifdef SCTP_LOG_CLOSING
2608f8829a4aSRandall Stewart 	sctp_log_closing(inp, NULL, 12);
2609f8829a4aSRandall Stewart #endif
2610f8829a4aSRandall Stewart 	return (error);
2611f8829a4aSRandall Stewart }
2612f8829a4aSRandall Stewart 
2613f8829a4aSRandall Stewart void
2614f8829a4aSRandall Stewart sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp,
2615f8829a4aSRandall Stewart     struct sctp_tcb *stcb)
2616f8829a4aSRandall Stewart {
2617f8829a4aSRandall Stewart 	struct sctp_nets *net;
2618f8829a4aSRandall Stewart 	uint16_t lport, rport;
2619f8829a4aSRandall Stewart 	struct sctppcbhead *head;
2620f8829a4aSRandall Stewart 	struct sctp_laddr *laddr, *oladdr;
2621f8829a4aSRandall Stewart 
26222afb3e84SRandall Stewart 	atomic_add_int(&stcb->asoc.refcnt, 1);
2623f8829a4aSRandall Stewart 	SCTP_TCB_UNLOCK(stcb);
2624f8829a4aSRandall Stewart 	SCTP_INP_INFO_WLOCK();
2625f8829a4aSRandall Stewart 	SCTP_INP_WLOCK(old_inp);
2626f8829a4aSRandall Stewart 	SCTP_INP_WLOCK(new_inp);
2627f8829a4aSRandall Stewart 	SCTP_TCB_LOCK(stcb);
26282afb3e84SRandall Stewart 	atomic_subtract_int(&stcb->asoc.refcnt, 1);
2629f8829a4aSRandall Stewart 
2630f8829a4aSRandall Stewart 	new_inp->sctp_ep.time_of_secret_change =
2631f8829a4aSRandall Stewart 	    old_inp->sctp_ep.time_of_secret_change;
2632f8829a4aSRandall Stewart 	memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key,
2633f8829a4aSRandall Stewart 	    sizeof(old_inp->sctp_ep.secret_key));
2634f8829a4aSRandall Stewart 	new_inp->sctp_ep.current_secret_number =
2635f8829a4aSRandall Stewart 	    old_inp->sctp_ep.current_secret_number;
2636f8829a4aSRandall Stewart 	new_inp->sctp_ep.last_secret_number =
2637f8829a4aSRandall Stewart 	    old_inp->sctp_ep.last_secret_number;
2638f8829a4aSRandall Stewart 	new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie;
2639f8829a4aSRandall Stewart 
2640f8829a4aSRandall Stewart 	/* make it so new data pours into the new socket */
2641f8829a4aSRandall Stewart 	stcb->sctp_socket = new_inp->sctp_socket;
2642f8829a4aSRandall Stewart 	stcb->sctp_ep = new_inp;
2643f8829a4aSRandall Stewart 
2644f8829a4aSRandall Stewart 	/* Copy the port across */
2645f8829a4aSRandall Stewart 	lport = new_inp->sctp_lport = old_inp->sctp_lport;
2646f8829a4aSRandall Stewart 	rport = stcb->rport;
2647f8829a4aSRandall Stewart 	/* Pull the tcb from the old association */
2648f8829a4aSRandall Stewart 	LIST_REMOVE(stcb, sctp_tcbhash);
2649f8829a4aSRandall Stewart 	LIST_REMOVE(stcb, sctp_tcblist);
2650a99b6783SRandall Stewart 	if (stcb->asoc.in_asocid_hash) {
2651a99b6783SRandall Stewart 		LIST_REMOVE(stcb, sctp_tcbasocidhash);
2652a99b6783SRandall Stewart 	}
2653f8829a4aSRandall Stewart 	/* Now insert the new_inp into the TCP connected hash */
2654034b88b0SMichael Tuexen 	head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
2655f8829a4aSRandall Stewart 
2656f8829a4aSRandall Stewart 	LIST_INSERT_HEAD(head, new_inp, sctp_hash);
265793164cf9SRandall Stewart 	/* Its safe to access */
265893164cf9SRandall Stewart 	new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
2659f8829a4aSRandall Stewart 
2660f8829a4aSRandall Stewart 	/* Now move the tcb into the endpoint list */
2661f8829a4aSRandall Stewart 	LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist);
2662f8829a4aSRandall Stewart 	/*
2663f8829a4aSRandall Stewart 	 * Question, do we even need to worry about the ep-hash since we
2664f8829a4aSRandall Stewart 	 * only have one connection? Probably not :> so lets get rid of it
2665f8829a4aSRandall Stewart 	 * and not suck up any kernel memory in that.
2666f8829a4aSRandall Stewart 	 */
2667a99b6783SRandall Stewart 	if (stcb->asoc.in_asocid_hash) {
2668a99b6783SRandall Stewart 		struct sctpasochead *lhd;
2669f8829a4aSRandall Stewart 
2670a99b6783SRandall Stewart 		lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id,
2671a99b6783SRandall Stewart 		    new_inp->hashasocidmark)];
2672a99b6783SRandall Stewart 		LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash);
2673a99b6783SRandall Stewart 	}
2674f8829a4aSRandall Stewart 	/* Ok. Let's restart timer. */
2675f8829a4aSRandall Stewart 	TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2676f8829a4aSRandall Stewart 		sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp,
2677f8829a4aSRandall Stewart 		    stcb, net);
2678f8829a4aSRandall Stewart 	}
2679f8829a4aSRandall Stewart 
2680f8829a4aSRandall Stewart 	SCTP_INP_INFO_WUNLOCK();
2681f8829a4aSRandall Stewart 	if (new_inp->sctp_tcbhash != NULL) {
268244b7479bSRandall Stewart 		SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark);
2683f8829a4aSRandall Stewart 		new_inp->sctp_tcbhash = NULL;
2684f8829a4aSRandall Stewart 	}
2685f8829a4aSRandall Stewart 	if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2686f8829a4aSRandall Stewart 		/* Subset bound, so copy in the laddr list from the old_inp */
2687f8829a4aSRandall Stewart 		LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) {
2688b3f1ea41SRandall Stewart 			laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2689f8829a4aSRandall Stewart 			if (laddr == NULL) {
2690f8829a4aSRandall Stewart 				/*
2691f8829a4aSRandall Stewart 				 * Gak, what can we do? This assoc is really
2692f8829a4aSRandall Stewart 				 * HOSED. We probably should send an abort
2693f8829a4aSRandall Stewart 				 * here.
2694f8829a4aSRandall Stewart 				 */
2695ad81507eSRandall Stewart 				SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n");
2696f8829a4aSRandall Stewart 				continue;
2697f8829a4aSRandall Stewart 			}
2698f8829a4aSRandall Stewart 			SCTP_INCR_LADDR_COUNT();
26995ba7f91fSMichael Tuexen 			memset(laddr, 0, sizeof(*laddr));
2700d61a0ae0SRandall Stewart 			(void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2701f8829a4aSRandall Stewart 			laddr->ifa = oladdr->ifa;
2702bff64a4dSRandall Stewart 			atomic_add_int(&laddr->ifa->refcount, 1);
2703f8829a4aSRandall Stewart 			LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr,
2704f8829a4aSRandall Stewart 			    sctp_nxt_addr);
2705f8829a4aSRandall Stewart 			new_inp->laddr_count++;
27063d2443ccSMichael Tuexen 			if (oladdr == stcb->asoc.last_used_address) {
27073d2443ccSMichael Tuexen 				stcb->asoc.last_used_address = laddr;
27083d2443ccSMichael Tuexen 			}
2709f8829a4aSRandall Stewart 		}
2710f8829a4aSRandall Stewart 	}
27118745f898SMichael Tuexen 	/* Now any running timers need to be adjusted. */
27128745f898SMichael Tuexen 	if (stcb->asoc.dack_timer.ep == old_inp) {
27138745f898SMichael Tuexen 		SCTP_INP_DECR_REF(old_inp);
27148745f898SMichael Tuexen 		stcb->asoc.dack_timer.ep = new_inp;
27158745f898SMichael Tuexen 		SCTP_INP_INCR_REF(new_inp);
27168745f898SMichael Tuexen 	}
27178745f898SMichael Tuexen 	if (stcb->asoc.asconf_timer.ep == old_inp) {
27188745f898SMichael Tuexen 		SCTP_INP_DECR_REF(old_inp);
27198745f898SMichael Tuexen 		stcb->asoc.asconf_timer.ep = new_inp;
27208745f898SMichael Tuexen 		SCTP_INP_INCR_REF(new_inp);
27218745f898SMichael Tuexen 	}
27228745f898SMichael Tuexen 	if (stcb->asoc.strreset_timer.ep == old_inp) {
27238745f898SMichael Tuexen 		SCTP_INP_DECR_REF(old_inp);
27248745f898SMichael Tuexen 		stcb->asoc.strreset_timer.ep = new_inp;
27258745f898SMichael Tuexen 		SCTP_INP_INCR_REF(new_inp);
27268745f898SMichael Tuexen 	}
27278745f898SMichael Tuexen 	if (stcb->asoc.shut_guard_timer.ep == old_inp) {
27288745f898SMichael Tuexen 		SCTP_INP_DECR_REF(old_inp);
27298745f898SMichael Tuexen 		stcb->asoc.shut_guard_timer.ep = new_inp;
27308745f898SMichael Tuexen 		SCTP_INP_INCR_REF(new_inp);
27318745f898SMichael Tuexen 	}
27328745f898SMichael Tuexen 	if (stcb->asoc.autoclose_timer.ep == old_inp) {
27338745f898SMichael Tuexen 		SCTP_INP_DECR_REF(old_inp);
27348745f898SMichael Tuexen 		stcb->asoc.autoclose_timer.ep = new_inp;
27358745f898SMichael Tuexen 		SCTP_INP_INCR_REF(new_inp);
27368745f898SMichael Tuexen 	}
27378745f898SMichael Tuexen 	if (stcb->asoc.delete_prim_timer.ep == old_inp) {
27388745f898SMichael Tuexen 		SCTP_INP_DECR_REF(old_inp);
27398745f898SMichael Tuexen 		stcb->asoc.delete_prim_timer.ep = new_inp;
27408745f898SMichael Tuexen 		SCTP_INP_INCR_REF(new_inp);
27418745f898SMichael Tuexen 	}
2742f8829a4aSRandall Stewart 	/* now what about the nets? */
2743f8829a4aSRandall Stewart 	TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
27448745f898SMichael Tuexen 		if (net->pmtu_timer.ep == old_inp) {
27458745f898SMichael Tuexen 			SCTP_INP_DECR_REF(old_inp);
27468745f898SMichael Tuexen 			net->pmtu_timer.ep = new_inp;
27478745f898SMichael Tuexen 			SCTP_INP_INCR_REF(new_inp);
27488745f898SMichael Tuexen 		}
27498745f898SMichael Tuexen 		if (net->hb_timer.ep == old_inp) {
27508745f898SMichael Tuexen 			SCTP_INP_DECR_REF(old_inp);
27518745f898SMichael Tuexen 			net->hb_timer.ep = new_inp;
27528745f898SMichael Tuexen 			SCTP_INP_INCR_REF(new_inp);
27538745f898SMichael Tuexen 		}
27548745f898SMichael Tuexen 		if (net->rxt_timer.ep == old_inp) {
27558745f898SMichael Tuexen 			SCTP_INP_DECR_REF(old_inp);
27568745f898SMichael Tuexen 			net->rxt_timer.ep = new_inp;
27578745f898SMichael Tuexen 			SCTP_INP_INCR_REF(new_inp);
27588745f898SMichael Tuexen 		}
2759f8829a4aSRandall Stewart 	}
2760f8829a4aSRandall Stewart 	SCTP_INP_WUNLOCK(new_inp);
2761f8829a4aSRandall Stewart 	SCTP_INP_WUNLOCK(old_inp);
2762f8829a4aSRandall Stewart }
2763f8829a4aSRandall Stewart 
27642b1c7de4SMichael Tuexen /*
27652b1c7de4SMichael Tuexen  * insert an laddr entry with the given ifa for the desired list
27662b1c7de4SMichael Tuexen  */
27672b1c7de4SMichael Tuexen static int
27682b1c7de4SMichael Tuexen sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
27692b1c7de4SMichael Tuexen {
27702b1c7de4SMichael Tuexen 	struct sctp_laddr *laddr;
2771f8829a4aSRandall Stewart 
27722b1c7de4SMichael Tuexen 	laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
27732b1c7de4SMichael Tuexen 	if (laddr == NULL) {
27742b1c7de4SMichael Tuexen 		/* out of memory? */
27752b1c7de4SMichael Tuexen 		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
27762b1c7de4SMichael Tuexen 		return (EINVAL);
27772b1c7de4SMichael Tuexen 	}
27782b1c7de4SMichael Tuexen 	SCTP_INCR_LADDR_COUNT();
27795ba7f91fSMichael Tuexen 	memset(laddr, 0, sizeof(*laddr));
27802b1c7de4SMichael Tuexen 	(void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
27812b1c7de4SMichael Tuexen 	laddr->ifa = ifa;
27822b1c7de4SMichael Tuexen 	laddr->action = act;
27832b1c7de4SMichael Tuexen 	atomic_add_int(&ifa->refcount, 1);
27842b1c7de4SMichael Tuexen 	/* insert it */
27852b1c7de4SMichael Tuexen 	LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr);
2786f8829a4aSRandall Stewart 
27872b1c7de4SMichael Tuexen 	return (0);
27882b1c7de4SMichael Tuexen }
27892b1c7de4SMichael Tuexen 
27902b1c7de4SMichael Tuexen /*
27912b1c7de4SMichael Tuexen  * Remove an laddr entry from the local address list (on an assoc)
27922b1c7de4SMichael Tuexen  */
27932b1c7de4SMichael Tuexen static void
27942b1c7de4SMichael Tuexen sctp_remove_laddr(struct sctp_laddr *laddr)
27952b1c7de4SMichael Tuexen {
27962b1c7de4SMichael Tuexen 
27972b1c7de4SMichael Tuexen 	/* remove from the list */
27982b1c7de4SMichael Tuexen 	LIST_REMOVE(laddr, sctp_nxt_addr);
27992b1c7de4SMichael Tuexen 	sctp_free_ifa(laddr->ifa);
28002b1c7de4SMichael Tuexen 	SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr);
28012b1c7de4SMichael Tuexen 	SCTP_DECR_LADDR_COUNT();
28022b1c7de4SMichael Tuexen }
2803f8829a4aSRandall Stewart 
28041b649582SRandall Stewart /* sctp_ifap is used to bypass normal local address validation checks */
2805f8829a4aSRandall Stewart int
280680fefe0aSRandall Stewart sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
28071b649582SRandall Stewart     struct sctp_ifa *sctp_ifap, struct thread *p)
2808f8829a4aSRandall Stewart {
2809f8829a4aSRandall Stewart 	/* bind a ep to a socket address */
2810f8829a4aSRandall Stewart 	struct sctppcbhead *head;
2811f8829a4aSRandall Stewart 	struct sctp_inpcb *inp, *inp_tmp;
2812f8829a4aSRandall Stewart 	struct inpcb *ip_inp;
28136d9e8f2bSRandall Stewart 	int port_reuse_active = 0;
2814f8829a4aSRandall Stewart 	int bindall;
2815f8829a4aSRandall Stewart 	uint16_t lport;
2816f8829a4aSRandall Stewart 	int error;
281742551e99SRandall Stewart 	uint32_t vrf_id;
2818f8829a4aSRandall Stewart 
2819f8829a4aSRandall Stewart 	lport = 0;
2820f8829a4aSRandall Stewart 	bindall = 1;
2821f8829a4aSRandall Stewart 	inp = (struct sctp_inpcb *)so->so_pcb;
2822f8829a4aSRandall Stewart 	ip_inp = (struct inpcb *)so->so_pcb;
2823f8829a4aSRandall Stewart #ifdef SCTP_DEBUG
2824f8829a4aSRandall Stewart 	if (addr) {
2825ad81507eSRandall Stewart 		SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port: %d\n",
2826f8829a4aSRandall Stewart 		    ntohs(((struct sockaddr_in *)addr)->sin_port));
2827ad81507eSRandall Stewart 		SCTPDBG(SCTP_DEBUG_PCB1, "Addr: ");
2828ad81507eSRandall Stewart 		SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
2829f8829a4aSRandall Stewart 	}
2830ad81507eSRandall Stewart #endif
2831f8829a4aSRandall Stewart 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2832f8829a4aSRandall Stewart 		/* already did a bind, subsequent binds NOT allowed ! */
2833c4739e2fSRandall Stewart 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2834f8829a4aSRandall Stewart 		return (EINVAL);
2835f8829a4aSRandall Stewart 	}
283652be287eSRandall Stewart #ifdef INVARIANTS
283752be287eSRandall Stewart 	if (p == NULL)
283852be287eSRandall Stewart 		panic("null proc/thread");
283952be287eSRandall Stewart #endif
2840f8829a4aSRandall Stewart 	if (addr != NULL) {
28415e2c2d87SRandall Stewart 		switch (addr->sa_family) {
2842e6194c2eSMichael Tuexen #ifdef INET
28435e2c2d87SRandall Stewart 		case AF_INET:
28445e2c2d87SRandall Stewart 			{
2845f8829a4aSRandall Stewart 				struct sockaddr_in *sin;
2846f8829a4aSRandall Stewart 
2847f8829a4aSRandall Stewart 				/* IPV6_V6ONLY socket? */
284894962f6bSMichael Tuexen 				if (SCTP_IPV6_V6ONLY(inp)) {
2849c4739e2fSRandall Stewart 					SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2850f8829a4aSRandall Stewart 					return (EINVAL);
2851f8829a4aSRandall Stewart 				}
2852c4739e2fSRandall Stewart 				if (addr->sa_len != sizeof(*sin)) {
2853c4739e2fSRandall Stewart 					SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2854f8829a4aSRandall Stewart 					return (EINVAL);
2855c4739e2fSRandall Stewart 				}
28560053ed28SMichael Tuexen 
2857f8829a4aSRandall Stewart 				sin = (struct sockaddr_in *)addr;
2858f8829a4aSRandall Stewart 				lport = sin->sin_port;
285918e198d3SRandall Stewart 				/*
2860830d754dSRandall Stewart 				 * For LOOPBACK the prison_local_ip4() call
2861830d754dSRandall Stewart 				 * will transmute the ip address to the
2862830d754dSRandall Stewart 				 * proper value.
286318e198d3SRandall Stewart 				 */
2864c3b8c73cSRandall Stewart 				if (p && (error = prison_local_ip4(p->td_ucred, &sin->sin_addr)) != 0) {
2865c3b8c73cSRandall Stewart 					SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2866c3b8c73cSRandall Stewart 					return (error);
286718e198d3SRandall Stewart 				}
2868f8829a4aSRandall Stewart 				if (sin->sin_addr.s_addr != INADDR_ANY) {
2869f8829a4aSRandall Stewart 					bindall = 0;
2870f8829a4aSRandall Stewart 				}
28715e2c2d87SRandall Stewart 				break;
28725e2c2d87SRandall Stewart 			}
2873e6194c2eSMichael Tuexen #endif
28745e2c2d87SRandall Stewart #ifdef INET6
28755e2c2d87SRandall Stewart 		case AF_INET6:
28765e2c2d87SRandall Stewart 			{
2877b7b84c0eSMichael Tuexen 				/*
2878b7b84c0eSMichael Tuexen 				 * Only for pure IPv6 Address. (No IPv4
2879b7b84c0eSMichael Tuexen 				 * Mapped!)
2880b7b84c0eSMichael Tuexen 				 */
2881f8829a4aSRandall Stewart 				struct sockaddr_in6 *sin6;
2882f8829a4aSRandall Stewart 
2883f8829a4aSRandall Stewart 				sin6 = (struct sockaddr_in6 *)addr;
2884f8829a4aSRandall Stewart 
2885c4739e2fSRandall Stewart 				if (addr->sa_len != sizeof(*sin6)) {
2886c4739e2fSRandall Stewart 					SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2887f8829a4aSRandall Stewart 					return (EINVAL);
2888c4739e2fSRandall Stewart 				}
2889f8829a4aSRandall Stewart 				lport = sin6->sin6_port;
289018e198d3SRandall Stewart 				/*
2891830d754dSRandall Stewart 				 * For LOOPBACK the prison_local_ip6() call
2892830d754dSRandall Stewart 				 * will transmute the ipv6 address to the
2893830d754dSRandall Stewart 				 * proper value.
289418e198d3SRandall Stewart 				 */
2895c3b8c73cSRandall Stewart 				if (p && (error = prison_local_ip6(p->td_ucred, &sin6->sin6_addr,
2896c3b8c73cSRandall Stewart 				    (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
2897c3b8c73cSRandall Stewart 					SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2898c3b8c73cSRandall Stewart 					return (error);
2899413628a7SBjoern A. Zeeb 				}
2900f8829a4aSRandall Stewart 				if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2901f8829a4aSRandall Stewart 					bindall = 0;
2902f8829a4aSRandall Stewart 					/* KAME hack: embed scopeid */
2903482444b4SRandall Stewart 					if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
2904c4739e2fSRandall Stewart 						SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2905f8829a4aSRandall Stewart 						return (EINVAL);
2906f8829a4aSRandall Stewart 					}
2907c4739e2fSRandall Stewart 				}
2908f8829a4aSRandall Stewart 				/* this must be cleared for ifa_ifwithaddr() */
2909f8829a4aSRandall Stewart 				sin6->sin6_scope_id = 0;
29105e2c2d87SRandall Stewart 				break;
29115e2c2d87SRandall Stewart 			}
29125e2c2d87SRandall Stewart #endif
29135e2c2d87SRandall Stewart 		default:
2914c4739e2fSRandall Stewart 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EAFNOSUPPORT);
2915f8829a4aSRandall Stewart 			return (EAFNOSUPPORT);
2916f8829a4aSRandall Stewart 		}
2917f8829a4aSRandall Stewart 	}
29183ca1bceeSRandall Stewart 	SCTP_INP_INFO_WLOCK();
29193ca1bceeSRandall Stewart 	SCTP_INP_WLOCK(inp);
29203c503c28SRandall Stewart 	/* Setup a vrf_id to be the default for the non-bind-all case. */
292142551e99SRandall Stewart 	vrf_id = inp->def_vrf_id;
292242551e99SRandall Stewart 
2923f8829a4aSRandall Stewart 	/* increase our count due to the unlock we do */
2924f8829a4aSRandall Stewart 	SCTP_INP_INCR_REF(inp);
2925f8829a4aSRandall Stewart 	if (lport) {
2926f8829a4aSRandall Stewart 		/*
29278225a9bcSMichael Tuexen 		 * Did the caller specify a port? if so we must see if an ep
2928f8829a4aSRandall Stewart 		 * already has this one bound.
2929f8829a4aSRandall Stewart 		 */
2930f8829a4aSRandall Stewart 		/* got to be root to get at low ports */
2931f8829a4aSRandall Stewart 		if (ntohs(lport) < IPPORT_RESERVED) {
29320c4622daSMichael Tuexen 			if ((p != NULL) && ((error =
293332f9753cSRobert Watson 			    priv_check(p, PRIV_NETINET_RESERVEDPORT)
29340c4622daSMichael Tuexen 			    ) != 0)) {
2935f8829a4aSRandall Stewart 				SCTP_INP_DECR_REF(inp);
2936f8829a4aSRandall Stewart 				SCTP_INP_WUNLOCK(inp);
2937f8829a4aSRandall Stewart 				SCTP_INP_INFO_WUNLOCK();
2938f8829a4aSRandall Stewart 				return (error);
2939f8829a4aSRandall Stewart 			}
2940f8829a4aSRandall Stewart 		}
2941f8829a4aSRandall Stewart 		SCTP_INP_WUNLOCK(inp);
294242551e99SRandall Stewart 		if (bindall) {
294342551e99SRandall Stewart 			vrf_id = inp->def_vrf_id;
294442551e99SRandall Stewart 			inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2945f8829a4aSRandall Stewart 			if (inp_tmp != NULL) {
2946f8829a4aSRandall Stewart 				/*
294742551e99SRandall Stewart 				 * lock guy returned and lower count note
294842551e99SRandall Stewart 				 * that we are not bound so inp_tmp should
294942551e99SRandall Stewart 				 * NEVER be inp. And it is this inp
295042551e99SRandall Stewart 				 * (inp_tmp) that gets the reference bump,
295142551e99SRandall Stewart 				 * so we must lower it.
2952f8829a4aSRandall Stewart 				 */
2953f8829a4aSRandall Stewart 				SCTP_INP_DECR_REF(inp_tmp);
2954f8829a4aSRandall Stewart 				/* unlock info */
29556d9e8f2bSRandall Stewart 				if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
29566d9e8f2bSRandall Stewart 				    (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2957b7b84c0eSMichael Tuexen 					/*
2958b7b84c0eSMichael Tuexen 					 * Ok, must be one-2-one and
2959b7b84c0eSMichael Tuexen 					 * allowing port re-use
2960b7b84c0eSMichael Tuexen 					 */
29616d9e8f2bSRandall Stewart 					port_reuse_active = 1;
29626d9e8f2bSRandall Stewart 					goto continue_anyway;
29636d9e8f2bSRandall Stewart 				}
29646d9e8f2bSRandall Stewart 				SCTP_INP_DECR_REF(inp);
2965f8829a4aSRandall Stewart 				SCTP_INP_INFO_WUNLOCK();
2966c4739e2fSRandall Stewart 				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2967207304d4SRandall Stewart 				return (EADDRINUSE);
2968f8829a4aSRandall Stewart 			}
296942551e99SRandall Stewart 		} else {
297042551e99SRandall Stewart 			inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
297142551e99SRandall Stewart 			if (inp_tmp != NULL) {
297242551e99SRandall Stewart 				/*
297342551e99SRandall Stewart 				 * lock guy returned and lower count note
297442551e99SRandall Stewart 				 * that we are not bound so inp_tmp should
297542551e99SRandall Stewart 				 * NEVER be inp. And it is this inp
297642551e99SRandall Stewart 				 * (inp_tmp) that gets the reference bump,
297742551e99SRandall Stewart 				 * so we must lower it.
297842551e99SRandall Stewart 				 */
297942551e99SRandall Stewart 				SCTP_INP_DECR_REF(inp_tmp);
298042551e99SRandall Stewart 				/* unlock info */
29816d9e8f2bSRandall Stewart 				if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
29826d9e8f2bSRandall Stewart 				    (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2983b7b84c0eSMichael Tuexen 					/*
2984b7b84c0eSMichael Tuexen 					 * Ok, must be one-2-one and
2985b7b84c0eSMichael Tuexen 					 * allowing port re-use
2986b7b84c0eSMichael Tuexen 					 */
29876d9e8f2bSRandall Stewart 					port_reuse_active = 1;
29886d9e8f2bSRandall Stewart 					goto continue_anyway;
29896d9e8f2bSRandall Stewart 				}
29906d9e8f2bSRandall Stewart 				SCTP_INP_DECR_REF(inp);
299142551e99SRandall Stewart 				SCTP_INP_INFO_WUNLOCK();
2992c4739e2fSRandall Stewart 				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2993207304d4SRandall Stewart 				return (EADDRINUSE);
299442551e99SRandall Stewart 			}
299542551e99SRandall Stewart 		}
29966d9e8f2bSRandall Stewart continue_anyway:
2997f8829a4aSRandall Stewart 		SCTP_INP_WLOCK(inp);
2998f8829a4aSRandall Stewart 		if (bindall) {
2999f8829a4aSRandall Stewart 			/* verify that no lport is not used by a singleton */
30006d9e8f2bSRandall Stewart 			if ((port_reuse_active == 0) &&
30018225a9bcSMichael Tuexen 			    (inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))) {
3002f8829a4aSRandall Stewart 				/* Sorry someone already has this one bound */
30036d9e8f2bSRandall Stewart 				if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
30046d9e8f2bSRandall Stewart 				    (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
30056d9e8f2bSRandall Stewart 					port_reuse_active = 1;
30066d9e8f2bSRandall Stewart 				} else {
3007f8829a4aSRandall Stewart 					SCTP_INP_DECR_REF(inp);
3008f8829a4aSRandall Stewart 					SCTP_INP_WUNLOCK(inp);
3009f8829a4aSRandall Stewart 					SCTP_INP_INFO_WUNLOCK();
3010c4739e2fSRandall Stewart 					SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3011207304d4SRandall Stewart 					return (EADDRINUSE);
3012f8829a4aSRandall Stewart 				}
3013f8829a4aSRandall Stewart 			}
30146d9e8f2bSRandall Stewart 		}
3015f8829a4aSRandall Stewart 	} else {
30169a972525SRandall Stewart 		uint16_t first, last, candidate;
3017d61a0ae0SRandall Stewart 		uint16_t count;
3018d61a0ae0SRandall Stewart 		int done;
3019f8829a4aSRandall Stewart 
3020d61a0ae0SRandall Stewart 		if (ip_inp->inp_flags & INP_HIGHPORT) {
3021482444b4SRandall Stewart 			first = MODULE_GLOBAL(ipport_hifirstauto);
3022482444b4SRandall Stewart 			last = MODULE_GLOBAL(ipport_hilastauto);
3023d61a0ae0SRandall Stewart 		} else if (ip_inp->inp_flags & INP_LOWPORT) {
3024d61a0ae0SRandall Stewart 			if (p && (error =
302532f9753cSRobert Watson 			    priv_check(p, PRIV_NETINET_RESERVEDPORT)
3026d61a0ae0SRandall Stewart 			    )) {
3027d61a0ae0SRandall Stewart 				SCTP_INP_DECR_REF(inp);
3028d61a0ae0SRandall Stewart 				SCTP_INP_WUNLOCK(inp);
3029d61a0ae0SRandall Stewart 				SCTP_INP_INFO_WUNLOCK();
3030c4739e2fSRandall Stewart 				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
3031d61a0ae0SRandall Stewart 				return (error);
3032d61a0ae0SRandall Stewart 			}
3033482444b4SRandall Stewart 			first = MODULE_GLOBAL(ipport_lowfirstauto);
3034482444b4SRandall Stewart 			last = MODULE_GLOBAL(ipport_lowlastauto);
3035d61a0ae0SRandall Stewart 		} else {
3036482444b4SRandall Stewart 			first = MODULE_GLOBAL(ipport_firstauto);
3037482444b4SRandall Stewart 			last = MODULE_GLOBAL(ipport_lastauto);
3038d61a0ae0SRandall Stewart 		}
3039d61a0ae0SRandall Stewart 		if (first > last) {
3040d61a0ae0SRandall Stewart 			uint16_t temp;
3041f8829a4aSRandall Stewart 
3042d61a0ae0SRandall Stewart 			temp = first;
3043d61a0ae0SRandall Stewart 			first = last;
3044d61a0ae0SRandall Stewart 			last = temp;
3045f8829a4aSRandall Stewart 		}
3046d61a0ae0SRandall Stewart 		count = last - first + 1;	/* number of candidates */
30479a972525SRandall Stewart 		candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count);
30483c503c28SRandall Stewart 
3049d61a0ae0SRandall Stewart 		done = 0;
3050d61a0ae0SRandall Stewart 		while (!done) {
30516d9e8f2bSRandall Stewart 			if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) {
3052d61a0ae0SRandall Stewart 				done = 1;
3053f8829a4aSRandall Stewart 			}
3054d61a0ae0SRandall Stewart 			if (!done) {
3055d61a0ae0SRandall Stewart 				if (--count == 0) {
3056d61a0ae0SRandall Stewart 					SCTP_INP_DECR_REF(inp);
3057d61a0ae0SRandall Stewart 					SCTP_INP_WUNLOCK(inp);
3058d61a0ae0SRandall Stewart 					SCTP_INP_INFO_WUNLOCK();
3059c4739e2fSRandall Stewart 					SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
3060207304d4SRandall Stewart 					return (EADDRINUSE);
3061f8829a4aSRandall Stewart 				}
30629a972525SRandall Stewart 				if (candidate == last)
30639a972525SRandall Stewart 					candidate = first;
3064d61a0ae0SRandall Stewart 				else
30659a972525SRandall Stewart 					candidate = candidate + 1;
3066f8829a4aSRandall Stewart 			}
3067f8829a4aSRandall Stewart 		}
30689a972525SRandall Stewart 		lport = htons(candidate);
3069f8829a4aSRandall Stewart 	}
3070f8829a4aSRandall Stewart 	SCTP_INP_DECR_REF(inp);
3071f8829a4aSRandall Stewart 	if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE |
3072f8829a4aSRandall Stewart 	    SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
3073f8829a4aSRandall Stewart 		/*
3074f8829a4aSRandall Stewart 		 * this really should not happen. The guy did a non-blocking
3075f8829a4aSRandall Stewart 		 * bind and then did a close at the same time.
3076f8829a4aSRandall Stewart 		 */
3077f8829a4aSRandall Stewart 		SCTP_INP_WUNLOCK(inp);
3078f8829a4aSRandall Stewart 		SCTP_INP_INFO_WUNLOCK();
3079c4739e2fSRandall Stewart 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3080f8829a4aSRandall Stewart 		return (EINVAL);
3081f8829a4aSRandall Stewart 	}
3082f8829a4aSRandall Stewart 	/* ok we look clear to give out this port, so lets setup the binding */
3083f8829a4aSRandall Stewart 	if (bindall) {
3084f8829a4aSRandall Stewart 		/* binding to all addresses, so just set in the proper flags */
3085f8829a4aSRandall Stewart 		inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL;
3086f8829a4aSRandall Stewart 		/* set the automatic addr changes from kernel flag */
3087b3f1ea41SRandall Stewart 		if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) {
3088c4739e2fSRandall Stewart 			sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3089f8829a4aSRandall Stewart 			sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3090f8829a4aSRandall Stewart 		} else {
3091c4739e2fSRandall Stewart 			sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3092f8829a4aSRandall Stewart 			sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3093f8829a4aSRandall Stewart 		}
3094b3f1ea41SRandall Stewart 		if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) {
3095c54a18d2SRandall Stewart 			sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3096c54a18d2SRandall Stewart 		} else {
3097c54a18d2SRandall Stewart 			sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3098c54a18d2SRandall Stewart 		}
30992afb3e84SRandall Stewart 		/*
31002afb3e84SRandall Stewart 		 * set the automatic mobility_base from kernel flag (by
31012afb3e84SRandall Stewart 		 * micchie)
31022afb3e84SRandall Stewart 		 */
3103b3f1ea41SRandall Stewart 		if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) {
31042afb3e84SRandall Stewart 			sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE);
3105851b7298SRandall Stewart 			sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
31062afb3e84SRandall Stewart 		} else {
31072afb3e84SRandall Stewart 			sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE);
3108851b7298SRandall Stewart 			sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
31092afb3e84SRandall Stewart 		}
31102afb3e84SRandall Stewart 		/*
31112afb3e84SRandall Stewart 		 * set the automatic mobility_fasthandoff from kernel flag
31122afb3e84SRandall Stewart 		 * (by micchie)
31132afb3e84SRandall Stewart 		 */
3114b3f1ea41SRandall Stewart 		if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) {
31152afb3e84SRandall Stewart 			sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF);
3116851b7298SRandall Stewart 			sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
31172afb3e84SRandall Stewart 		} else {
31182afb3e84SRandall Stewart 			sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF);
3119851b7298SRandall Stewart 			sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
31202afb3e84SRandall Stewart 		}
3121f8829a4aSRandall Stewart 	} else {
3122f8829a4aSRandall Stewart 		/*
3123f8829a4aSRandall Stewart 		 * bind specific, make sure flags is off and add a new
3124f8829a4aSRandall Stewart 		 * address structure to the sctp_addr_list inside the ep
3125f8829a4aSRandall Stewart 		 * structure.
3126f8829a4aSRandall Stewart 		 *
31274c7fb0cfSMichael Tuexen 		 * We will need to allocate one and insert it at the head.
31284c7fb0cfSMichael Tuexen 		 * The socketopt call can just insert new addresses in there
31294c7fb0cfSMichael Tuexen 		 * as well. It will also have to do the embed scope kame
31304c7fb0cfSMichael Tuexen 		 * hack too (before adding).
3131f8829a4aSRandall Stewart 		 */
313242551e99SRandall Stewart 		struct sctp_ifa *ifa;
313324aaac8dSMichael Tuexen 		union sctp_sockstore store;
3134f8829a4aSRandall Stewart 
313524aaac8dSMichael Tuexen 		memset(&store, 0, sizeof(store));
3136e6194c2eSMichael Tuexen 		switch (addr->sa_family) {
3137e0e00a4dSMichael Tuexen #ifdef INET
3138e6194c2eSMichael Tuexen 		case AF_INET:
313924aaac8dSMichael Tuexen 			memcpy(&store.sin, addr, sizeof(struct sockaddr_in));
314024aaac8dSMichael Tuexen 			store.sin.sin_port = 0;
3141e6194c2eSMichael Tuexen 			break;
3142e0e00a4dSMichael Tuexen #endif
3143e0e00a4dSMichael Tuexen #ifdef INET6
3144e6194c2eSMichael Tuexen 		case AF_INET6:
314524aaac8dSMichael Tuexen 			memcpy(&store.sin6, addr, sizeof(struct sockaddr_in6));
314624aaac8dSMichael Tuexen 			store.sin6.sin6_port = 0;
3147e6194c2eSMichael Tuexen 			break;
3148e0e00a4dSMichael Tuexen #endif
3149e6194c2eSMichael Tuexen 		default:
3150e6194c2eSMichael Tuexen 			break;
3151f8829a4aSRandall Stewart 		}
3152f8829a4aSRandall Stewart 		/*
3153f8829a4aSRandall Stewart 		 * first find the interface with the bound address need to
3154f8829a4aSRandall Stewart 		 * zero out the port to find the address! yuck! can't do
3155f8829a4aSRandall Stewart 		 * this earlier since need port for sctp_pcb_findep()
3156f8829a4aSRandall Stewart 		 */
31578225a9bcSMichael Tuexen 		if (sctp_ifap != NULL) {
31581b649582SRandall Stewart 			ifa = sctp_ifap;
31598225a9bcSMichael Tuexen 		} else {
31601b649582SRandall Stewart 			/*
31611b649582SRandall Stewart 			 * Note for BSD we hit here always other O/S's will
31622cf33471SMichael Tuexen 			 * pass things in via the sctp_ifap argument.
31631b649582SRandall Stewart 			 */
316424aaac8dSMichael Tuexen 			ifa = sctp_find_ifa_by_addr(&store.sa,
3165851b7298SRandall Stewart 			    vrf_id, SCTP_ADDR_NOT_LOCKED);
31661b649582SRandall Stewart 		}
3167f8829a4aSRandall Stewart 		if (ifa == NULL) {
3168f8829a4aSRandall Stewart 			/* Can't find an interface with that address */
3169f8829a4aSRandall Stewart 			SCTP_INP_WUNLOCK(inp);
3170f8829a4aSRandall Stewart 			SCTP_INP_INFO_WUNLOCK();
3171c4739e2fSRandall Stewart 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRNOTAVAIL);
3172f8829a4aSRandall Stewart 			return (EADDRNOTAVAIL);
3173f8829a4aSRandall Stewart 		}
3174e6194c2eSMichael Tuexen #ifdef INET6
3175f8829a4aSRandall Stewart 		if (addr->sa_family == AF_INET6) {
317642551e99SRandall Stewart 			/* GAK, more FIXME IFA lock? */
317742551e99SRandall Stewart 			if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
3178f8829a4aSRandall Stewart 				/* Can't bind a non-existent addr. */
3179f8829a4aSRandall Stewart 				SCTP_INP_WUNLOCK(inp);
3180f8829a4aSRandall Stewart 				SCTP_INP_INFO_WUNLOCK();
3181c4739e2fSRandall Stewart 				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3182f8829a4aSRandall Stewart 				return (EINVAL);
3183f8829a4aSRandall Stewart 			}
3184f8829a4aSRandall Stewart 		}
3185e6194c2eSMichael Tuexen #endif
3186f8829a4aSRandall Stewart 		/* we're not bound all */
3187f8829a4aSRandall Stewart 		inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL;
31883c503c28SRandall Stewart 		/* allow bindx() to send ASCONF's for binding changes */
318942551e99SRandall Stewart 		sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
319080fefe0aSRandall Stewart 		/* clear automatic addr changes from kernel flag */
3191f8829a4aSRandall Stewart 		sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
319242551e99SRandall Stewart 
3193f8829a4aSRandall Stewart 		/* add this address to the endpoint list */
319442551e99SRandall Stewart 		error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0);
3195f8829a4aSRandall Stewart 		if (error != 0) {
3196f8829a4aSRandall Stewart 			SCTP_INP_WUNLOCK(inp);
3197f8829a4aSRandall Stewart 			SCTP_INP_INFO_WUNLOCK();
3198f8829a4aSRandall Stewart 			return (error);
3199f8829a4aSRandall Stewart 		}
3200f8829a4aSRandall Stewart 		inp->laddr_count++;
3201f8829a4aSRandall Stewart 	}
3202f8829a4aSRandall Stewart 	/* find the bucket */
32036d9e8f2bSRandall Stewart 	if (port_reuse_active) {
32046d9e8f2bSRandall Stewart 		/* Put it into tcp 1-2-1 hash */
3205034b88b0SMichael Tuexen 		head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))];
32066d9e8f2bSRandall Stewart 		inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
32076d9e8f2bSRandall Stewart 	} else {
3208034b88b0SMichael Tuexen 		head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))];
32096d9e8f2bSRandall Stewart 	}
3210f8829a4aSRandall Stewart 	/* put it in the bucket */
3211f8829a4aSRandall Stewart 	LIST_INSERT_HEAD(head, inp, sctp_hash);
32126d9e8f2bSRandall Stewart 	SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n",
3213dd294dceSMichael Tuexen 	    (void *)head, ntohs(lport), port_reuse_active);
3214f8829a4aSRandall Stewart 	/* set in the port */
3215f8829a4aSRandall Stewart 	inp->sctp_lport = lport;
3216f8829a4aSRandall Stewart 
3217f8829a4aSRandall Stewart 	/* turn off just the unbound flag */
3218f8829a4aSRandall Stewart 	inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
3219f8829a4aSRandall Stewart 	SCTP_INP_WUNLOCK(inp);
3220f8829a4aSRandall Stewart 	SCTP_INP_INFO_WUNLOCK();
3221f8829a4aSRandall Stewart 	return (0);
3222f8829a4aSRandall Stewart }
3223f8829a4aSRandall Stewart 
3224f8829a4aSRandall Stewart static void
3225f7517433SRandall Stewart sctp_iterator_inp_being_freed(struct sctp_inpcb *inp)
3226f8829a4aSRandall Stewart {
3227f7517433SRandall Stewart 	struct sctp_iterator *it, *nit;
3228f8829a4aSRandall Stewart 
3229f8829a4aSRandall Stewart 	/*
3230f8829a4aSRandall Stewart 	 * We enter with the only the ITERATOR_LOCK in place and a write
3231f8829a4aSRandall Stewart 	 * lock on the inp_info stuff.
3232f8829a4aSRandall Stewart 	 */
3233f7517433SRandall Stewart 	it = sctp_it_ctl.cur_it;
3234f7517433SRandall Stewart 	if (it && (it->vn != curvnet)) {
3235f7517433SRandall Stewart 		/* Its not looking at our VNET */
3236f7517433SRandall Stewart 		return;
3237f7517433SRandall Stewart 	}
3238f7517433SRandall Stewart 	if (it && (it->inp == inp)) {
3239f8829a4aSRandall Stewart 		/*
3240f7517433SRandall Stewart 		 * This is tricky and we hold the iterator lock, but when it
3241f7517433SRandall Stewart 		 * returns and gets the lock (when we release it) the
3242f7517433SRandall Stewart 		 * iterator will try to operate on inp. We need to stop that
3243f7517433SRandall Stewart 		 * from happening. But of course the iterator has a
3244f7517433SRandall Stewart 		 * reference on the stcb and inp. We can mark it and it will
3245f7517433SRandall Stewart 		 * stop.
3246f7517433SRandall Stewart 		 *
32474c7fb0cfSMichael Tuexen 		 * If its a single iterator situation, we set the end
32484c7fb0cfSMichael Tuexen 		 * iterator flag. Otherwise we set the iterator to go to the
32494c7fb0cfSMichael Tuexen 		 * next inp.
3250f7517433SRandall Stewart 		 *
3251f8829a4aSRandall Stewart 		 */
3252f7517433SRandall Stewart 		if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3253f7517433SRandall Stewart 			sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
3254f7517433SRandall Stewart 		} else {
3255f7517433SRandall Stewart 			sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_INP;
3256f7517433SRandall Stewart 		}
3257f7517433SRandall Stewart 	}
3258f7517433SRandall Stewart 	/*
3259f7517433SRandall Stewart 	 * Now go through and remove any single reference to our inp that
3260f7517433SRandall Stewart 	 * may be still pending on the list
3261f7517433SRandall Stewart 	 */
3262f7517433SRandall Stewart 	SCTP_IPI_ITERATOR_WQ_LOCK();
32634a9ef3f8SMichael Tuexen 	TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
3264f7517433SRandall Stewart 		if (it->vn != curvnet) {
3265f8829a4aSRandall Stewart 			continue;
3266f7517433SRandall Stewart 		}
3267f8829a4aSRandall Stewart 		if (it->inp == inp) {
3268f7517433SRandall Stewart 			/* This one points to me is it inp specific? */
3269f8829a4aSRandall Stewart 			if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3270f7517433SRandall Stewart 				/* Remove and free this one */
3271f7517433SRandall Stewart 				TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
3272f7517433SRandall Stewart 				    it, sctp_nxt_itr);
3273f7517433SRandall Stewart 				if (it->function_atend != NULL) {
3274f7517433SRandall Stewart 					(*it->function_atend) (it->pointer, it->val);
3275f7517433SRandall Stewart 				}
3276f7517433SRandall Stewart 				SCTP_FREE(it, SCTP_M_ITER);
3277f8829a4aSRandall Stewart 			} else {
3278f7517433SRandall Stewart 				it->inp = LIST_NEXT(it->inp, sctp_list);
3279fc066a61SMichael Tuexen 				if (it->inp) {
3280fc066a61SMichael Tuexen 					SCTP_INP_INCR_REF(it->inp);
3281fc066a61SMichael Tuexen 				}
3282f8829a4aSRandall Stewart 			}
3283b7b84c0eSMichael Tuexen 			/*
3284b7b84c0eSMichael Tuexen 			 * When its put in the refcnt is incremented so decr
3285b7b84c0eSMichael Tuexen 			 * it
3286b7b84c0eSMichael Tuexen 			 */
3287ec4c19fcSRandall Stewart 			SCTP_INP_DECR_REF(inp);
3288f8829a4aSRandall Stewart 		}
3289f8829a4aSRandall Stewart 	}
3290f7517433SRandall Stewart 	SCTP_IPI_ITERATOR_WQ_UNLOCK();
3291f8829a4aSRandall Stewart }
3292f8829a4aSRandall Stewart 
3293f8829a4aSRandall Stewart /* release sctp_inpcb unbind the port */
3294f8829a4aSRandall Stewart void
3295f8829a4aSRandall Stewart sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
3296f8829a4aSRandall Stewart {
3297f8829a4aSRandall Stewart 	/*
3298f8829a4aSRandall Stewart 	 * Here we free a endpoint. We must find it (if it is in the Hash
3299f8829a4aSRandall Stewart 	 * table) and remove it from there. Then we must also find it in the
3300f8829a4aSRandall Stewart 	 * overall list and remove it from there. After all removals are
3301f8829a4aSRandall Stewart 	 * complete then any timer has to be stopped. Then start the actual
3302f8829a4aSRandall Stewart 	 * freeing. a) Any local lists. b) Any associations. c) The hash of
3303f8829a4aSRandall Stewart 	 * all associations. d) finally the ep itself.
3304f8829a4aSRandall Stewart 	 */
3305f8829a4aSRandall Stewart 	struct sctp_tcb *asoc, *nasoc;
3306f8829a4aSRandall Stewart 	struct sctp_laddr *laddr, *nladdr;
3307f8829a4aSRandall Stewart 	struct inpcb *ip_pcb;
3308f8829a4aSRandall Stewart 	struct socket *so;
33098ce4a9a2SRandall Stewart 	int being_refed = 0;
33104a9ef3f8SMichael Tuexen 	struct sctp_queued_to_read *sq, *nsq;
331193164cf9SRandall Stewart 	int cnt;
33124a9ef3f8SMichael Tuexen 	sctp_sharedkey_t *shared_key, *nshared_key;
3313f8829a4aSRandall Stewart 
3314f8829a4aSRandall Stewart #ifdef SCTP_LOG_CLOSING
3315f8829a4aSRandall Stewart 	sctp_log_closing(inp, NULL, 0);
3316f8829a4aSRandall Stewart #endif
3317f8829a4aSRandall Stewart 	SCTP_ITERATOR_LOCK();
33182c6b25b4SRandall Stewart 	/* mark any iterators on the list or being processed */
33192c6b25b4SRandall Stewart 	sctp_iterator_inp_being_freed(inp);
33202c6b25b4SRandall Stewart 	SCTP_ITERATOR_UNLOCK();
3321f8829a4aSRandall Stewart 	so = inp->sctp_socket;
3322f8829a4aSRandall Stewart 	if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
3323f8829a4aSRandall Stewart 		/* been here before.. eeks.. get out of here */
3324207304d4SRandall Stewart 		SCTP_PRINTF("This conflict in free SHOULD not be happening! from %d, imm %d\n", from, immediate);
3325f8829a4aSRandall Stewart #ifdef SCTP_LOG_CLOSING
3326f8829a4aSRandall Stewart 		sctp_log_closing(inp, NULL, 1);
3327f8829a4aSRandall Stewart #endif
3328f8829a4aSRandall Stewart 		return;
3329f8829a4aSRandall Stewart 	}
3330f8829a4aSRandall Stewart 	SCTP_ASOC_CREATE_LOCK(inp);
3331f8829a4aSRandall Stewart 	SCTP_INP_INFO_WLOCK();
3332f8829a4aSRandall Stewart 
3333f8829a4aSRandall Stewart 	SCTP_INP_WLOCK(inp);
3334b3a44e46SRandall Stewart 	if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
3335b3a44e46SRandall Stewart 		inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP;
3336b3a44e46SRandall Stewart 		/* socket is gone, so no more wakeups allowed */
3337b3a44e46SRandall Stewart 		inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE;
3338b3a44e46SRandall Stewart 		inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
3339b3a44e46SRandall Stewart 		inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
3340b3a44e46SRandall Stewart 	}
3341ad81507eSRandall Stewart 	/* First time through we have the socket lock, after that no more. */
3342a5d547adSRandall Stewart 	sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL,
3343a5d547adSRandall Stewart 	    SCTP_FROM_SCTP_PCB + SCTP_LOC_1);
3344f8829a4aSRandall Stewart 
3345f8829a4aSRandall Stewart 	if (inp->control) {
3346f8829a4aSRandall Stewart 		sctp_m_freem(inp->control);
3347f8829a4aSRandall Stewart 		inp->control = NULL;
3348f8829a4aSRandall Stewart 	}
3349f8829a4aSRandall Stewart 	if (inp->pkt) {
3350f8829a4aSRandall Stewart 		sctp_m_freem(inp->pkt);
3351f8829a4aSRandall Stewart 		inp->pkt = NULL;
3352f8829a4aSRandall Stewart 	}
3353f8829a4aSRandall Stewart 	ip_pcb = &inp->ip_inp.inp;	/* we could just cast the main pointer
3354f8829a4aSRandall Stewart 					 * here but I will be nice :> (i.e.
3355f8829a4aSRandall Stewart 					 * ip_pcb = ep;) */
3356b0552ae2SRandall Stewart 	if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
3357f8829a4aSRandall Stewart 		int cnt_in_sd;
3358f8829a4aSRandall Stewart 
3359f8829a4aSRandall Stewart 		cnt_in_sd = 0;
33604a9ef3f8SMichael Tuexen 		LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3361c4739e2fSRandall Stewart 			SCTP_TCB_LOCK(asoc);
3362f8829a4aSRandall Stewart 			if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3363f8829a4aSRandall Stewart 				/* Skip guys being freed */
3364f8829a4aSRandall Stewart 				cnt_in_sd++;
336562fb761fSRandall Stewart 				if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
336662fb761fSRandall Stewart 					/*
336762fb761fSRandall Stewart 					 * Special case - we did not start a
336862fb761fSRandall Stewart 					 * kill timer on the asoc due to it
336962fb761fSRandall Stewart 					 * was not closed. So go ahead and
337062fb761fSRandall Stewart 					 * start it now.
337162fb761fSRandall Stewart 					 */
3372839d21d6SMichael Tuexen 					SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_IN_ACCEPT_QUEUE);
337362fb761fSRandall Stewart 					sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
337462fb761fSRandall Stewart 				}
3375c4739e2fSRandall Stewart 				SCTP_TCB_UNLOCK(asoc);
3376f8829a4aSRandall Stewart 				continue;
3377f8829a4aSRandall Stewart 			}
3378839d21d6SMichael Tuexen 			if (((SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_WAIT) ||
3379839d21d6SMichael Tuexen 			    (SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_ECHOED)) &&
33808933fa13SRandall Stewart 			    (asoc->asoc.total_output_queue_size == 0)) {
338175298de2SRandall Stewart 				/*
338275298de2SRandall Stewart 				 * If we have data in queue, we don't want
338375298de2SRandall Stewart 				 * to just free since the app may have done,
338475298de2SRandall Stewart 				 * send()/close or connect/send/close. And
338575298de2SRandall Stewart 				 * it wants the data to get across first.
338675298de2SRandall Stewart 				 */
33872afb3e84SRandall Stewart 				/* Just abandon things in the front states */
3388c4739e2fSRandall Stewart 				if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE,
3389c4739e2fSRandall Stewart 				    SCTP_FROM_SCTP_PCB + SCTP_LOC_2) == 0) {
3390c4739e2fSRandall Stewart 					cnt_in_sd++;
3391c4739e2fSRandall Stewart 				}
3392f8829a4aSRandall Stewart 				continue;
3393f8829a4aSRandall Stewart 			}
3394f8829a4aSRandall Stewart 			/* Disconnect the socket please */
3395f8829a4aSRandall Stewart 			asoc->sctp_socket = NULL;
3396839d21d6SMichael Tuexen 			SCTP_ADD_SUBSTATE(asoc, SCTP_STATE_CLOSED_SOCKET);
3397f8829a4aSRandall Stewart 			if ((asoc->asoc.size_on_reasm_queue > 0) ||
3398f8829a4aSRandall Stewart 			    (asoc->asoc.control_pdapi) ||
3399f8829a4aSRandall Stewart 			    (asoc->asoc.size_on_all_streams > 0) ||
34004e88d37aSMichael Tuexen 			    (so && (so->so_rcv.sb_cc > 0))) {
3401f8829a4aSRandall Stewart 				/* Left with Data unread */
3402f8829a4aSRandall Stewart 				struct mbuf *op_err;
3403f8829a4aSRandall Stewart 
3404ff1ffd74SMichael Tuexen 				op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3405a5d547adSRandall Stewart 				asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_3;
3406ceaad40aSRandall Stewart 				sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3407f8829a4aSRandall Stewart 				SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3408839d21d6SMichael Tuexen 				if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
3409839d21d6SMichael Tuexen 				    (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3410f8829a4aSRandall Stewart 					SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3411f8829a4aSRandall Stewart 				}
3412c4739e2fSRandall Stewart 				if (sctp_free_assoc(inp, asoc,
3413c4739e2fSRandall Stewart 				    SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_4) == 0) {
3414c4739e2fSRandall Stewart 					cnt_in_sd++;
3415c4739e2fSRandall Stewart 				}
3416f8829a4aSRandall Stewart 				continue;
3417f8829a4aSRandall Stewart 			} else if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3418f8829a4aSRandall Stewart 				    TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3419e06f3469SMichael Tuexen 			    (asoc->asoc.stream_queue_cnt == 0)) {
3420d1ea5fa9SMichael Tuexen 				if ((*asoc->asoc.ss_functions.sctp_ss_is_user_msgs_incomplete) (asoc, &asoc->asoc)) {
3421f8829a4aSRandall Stewart 					goto abort_anyway;
3422f8829a4aSRandall Stewart 				}
3423839d21d6SMichael Tuexen 				if ((SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
3424839d21d6SMichael Tuexen 				    (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
3425ca85e948SMichael Tuexen 					struct sctp_nets *netp;
3426ca85e948SMichael Tuexen 
3427f8829a4aSRandall Stewart 					/*
3428f8829a4aSRandall Stewart 					 * there is nothing queued to send,
3429f8829a4aSRandall Stewart 					 * so I send shutdown
3430f8829a4aSRandall Stewart 					 */
3431839d21d6SMichael Tuexen 					if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
3432839d21d6SMichael Tuexen 					    (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3433f8829a4aSRandall Stewart 						SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3434f42a358aSRandall Stewart 					}
3435839d21d6SMichael Tuexen 					SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT);
3436c39cfa1fSMichael Tuexen 					sctp_stop_timers_for_shutdown(asoc);
3437c39cfa1fSMichael Tuexen 					if (asoc->asoc.alternate) {
3438c39cfa1fSMichael Tuexen 						netp = asoc->asoc.alternate;
3439c39cfa1fSMichael Tuexen 					} else {
3440c39cfa1fSMichael Tuexen 						netp = asoc->asoc.primary_destination;
3441c39cfa1fSMichael Tuexen 					}
3442c39cfa1fSMichael Tuexen 					sctp_send_shutdown(asoc, netp);
3443f8829a4aSRandall Stewart 					sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, asoc->sctp_ep, asoc,
3444ca85e948SMichael Tuexen 					    netp);
34456fb7b4fbSMichael Tuexen 					sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc, NULL);
3446ceaad40aSRandall Stewart 					sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED);
3447f8829a4aSRandall Stewart 				}
3448f8829a4aSRandall Stewart 			} else {
3449f8829a4aSRandall Stewart 				/* mark into shutdown pending */
3450839d21d6SMichael Tuexen 				SCTP_ADD_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING);
34516fb7b4fbSMichael Tuexen 				sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc, NULL);
3452d1ea5fa9SMichael Tuexen 				if ((*asoc->asoc.ss_functions.sctp_ss_is_user_msgs_incomplete) (asoc, &asoc->asoc)) {
3453839d21d6SMichael Tuexen 					SCTP_ADD_SUBSTATE(asoc, SCTP_STATE_PARTIAL_MSG_LEFT);
3454f8829a4aSRandall Stewart 				}
3455f8829a4aSRandall Stewart 				if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3456f8829a4aSRandall Stewart 				    TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3457f8829a4aSRandall Stewart 				    (asoc->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
3458f8829a4aSRandall Stewart 					struct mbuf *op_err;
3459f8829a4aSRandall Stewart 
3460f8829a4aSRandall Stewart 			abort_anyway:
3461ff1ffd74SMichael Tuexen 					op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3462a5d547adSRandall Stewart 					asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_5;
3463ceaad40aSRandall Stewart 					sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3464f8829a4aSRandall Stewart 					SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3465839d21d6SMichael Tuexen 					if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
3466839d21d6SMichael Tuexen 					    (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3467f8829a4aSRandall Stewart 						SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3468f8829a4aSRandall Stewart 					}
3469c4739e2fSRandall Stewart 					if (sctp_free_assoc(inp, asoc,
3470c4739e2fSRandall Stewart 					    SCTP_PCBFREE_NOFORCE,
3471c4739e2fSRandall Stewart 					    SCTP_FROM_SCTP_PCB + SCTP_LOC_6) == 0) {
3472c4739e2fSRandall Stewart 						cnt_in_sd++;
3473c4739e2fSRandall Stewart 					}
3474f8829a4aSRandall Stewart 					continue;
34752afb3e84SRandall Stewart 				} else {
3476ceaad40aSRandall Stewart 					sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
3477f8829a4aSRandall Stewart 				}
3478f8829a4aSRandall Stewart 			}
3479f8829a4aSRandall Stewart 			cnt_in_sd++;
3480f8829a4aSRandall Stewart 			SCTP_TCB_UNLOCK(asoc);
3481f8829a4aSRandall Stewart 		}
3482f8829a4aSRandall Stewart 		/* now is there some left in our SHUTDOWN state? */
3483f8829a4aSRandall Stewart 		if (cnt_in_sd) {
3484f8829a4aSRandall Stewart #ifdef SCTP_LOG_CLOSING
3485f8829a4aSRandall Stewart 			sctp_log_closing(inp, NULL, 2);
3486f8829a4aSRandall Stewart #endif
34874a16c2c8SRandall Stewart 			inp->sctp_socket = NULL;
3488b3a44e46SRandall Stewart 			SCTP_INP_WUNLOCK(inp);
3489b3a44e46SRandall Stewart 			SCTP_ASOC_CREATE_UNLOCK(inp);
3490b3a44e46SRandall Stewart 			SCTP_INP_INFO_WUNLOCK();
3491f8829a4aSRandall Stewart 			return;
3492f8829a4aSRandall Stewart 		}
3493f8829a4aSRandall Stewart 	}
3494f8829a4aSRandall Stewart 	inp->sctp_socket = NULL;
3495f8829a4aSRandall Stewart 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) !=
3496f8829a4aSRandall Stewart 	    SCTP_PCB_FLAGS_UNBOUND) {
3497f8829a4aSRandall Stewart 		/*
3498f8829a4aSRandall Stewart 		 * ok, this guy has been bound. It's port is somewhere in
3499b3f1ea41SRandall Stewart 		 * the SCTP_BASE_INFO(hash table). Remove it!
3500f8829a4aSRandall Stewart 		 */
3501f8829a4aSRandall Stewart 		LIST_REMOVE(inp, sctp_hash);
3502f8829a4aSRandall Stewart 		inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND;
3503f8829a4aSRandall Stewart 	}
35040053ed28SMichael Tuexen 
3505f8829a4aSRandall Stewart 	/*
3506f8829a4aSRandall Stewart 	 * If there is a timer running to kill us, forget it, since it may
3507f8829a4aSRandall Stewart 	 * have a contest on the INP lock.. which would cause us to die ...
3508f8829a4aSRandall Stewart 	 */
3509f8829a4aSRandall Stewart 	cnt = 0;
35104a9ef3f8SMichael Tuexen 	LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
351127387dacSMichael Tuexen 		SCTP_TCB_LOCK(asoc);
3512205f3e15SMichael Tuexen 		if (immediate != SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
3513205f3e15SMichael Tuexen 			/* Disconnect the socket please */
3514205f3e15SMichael Tuexen 			asoc->sctp_socket = NULL;
3515205f3e15SMichael Tuexen 			SCTP_ADD_SUBSTATE(asoc, SCTP_STATE_CLOSED_SOCKET);
3516205f3e15SMichael Tuexen 		}
3517f8829a4aSRandall Stewart 		if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
35187c82e9faSRandall Stewart 			if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3519839d21d6SMichael Tuexen 				SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_IN_ACCEPT_QUEUE);
35207c82e9faSRandall Stewart 				sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
35217c82e9faSRandall Stewart 			}
3522f8829a4aSRandall Stewart 			cnt++;
352327387dacSMichael Tuexen 			SCTP_TCB_UNLOCK(asoc);
3524f8829a4aSRandall Stewart 			continue;
3525f8829a4aSRandall Stewart 		}
3526f8829a4aSRandall Stewart 		/* Free associations that are NOT killing us */
3527839d21d6SMichael Tuexen 		if ((SCTP_GET_STATE(asoc) != SCTP_STATE_COOKIE_WAIT) &&
3528f8829a4aSRandall Stewart 		    ((asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) {
3529f8829a4aSRandall Stewart 			struct mbuf *op_err;
3530f8829a4aSRandall Stewart 
3531ff1ffd74SMichael Tuexen 			op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3532a5d547adSRandall Stewart 			asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_7;
3533ceaad40aSRandall Stewart 			sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3534f8829a4aSRandall Stewart 			SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3535f8829a4aSRandall Stewart 		} else if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3536f8829a4aSRandall Stewart 			cnt++;
3537f8829a4aSRandall Stewart 			SCTP_TCB_UNLOCK(asoc);
3538f8829a4aSRandall Stewart 			continue;
3539f8829a4aSRandall Stewart 		}
3540839d21d6SMichael Tuexen 		if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
3541839d21d6SMichael Tuexen 		    (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3542f8829a4aSRandall Stewart 			SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3543f8829a4aSRandall Stewart 		}
3544b7d130beSMichael Tuexen 		if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_FORCE,
3545b7d130beSMichael Tuexen 		    SCTP_FROM_SCTP_PCB + SCTP_LOC_8) == 0) {
3546c4739e2fSRandall Stewart 			cnt++;
3547c4739e2fSRandall Stewart 		}
3548f8829a4aSRandall Stewart 	}
3549f8829a4aSRandall Stewart 	if (cnt) {
3550f8829a4aSRandall Stewart 		/* Ok we have someone out there that will kill us */
3551f8829a4aSRandall Stewart #ifdef SCTP_LOG_CLOSING
3552f8829a4aSRandall Stewart 		sctp_log_closing(inp, NULL, 3);
3553f8829a4aSRandall Stewart #endif
3554b3a44e46SRandall Stewart 		SCTP_INP_WUNLOCK(inp);
3555b3a44e46SRandall Stewart 		SCTP_ASOC_CREATE_UNLOCK(inp);
3556b3a44e46SRandall Stewart 		SCTP_INP_INFO_WUNLOCK();
3557f8829a4aSRandall Stewart 		return;
3558f8829a4aSRandall Stewart 	}
35598ce4a9a2SRandall Stewart 	if (SCTP_INP_LOCK_CONTENDED(inp))
35608ce4a9a2SRandall Stewart 		being_refed++;
35618ce4a9a2SRandall Stewart 	if (SCTP_INP_READ_CONTENDED(inp))
35628ce4a9a2SRandall Stewart 		being_refed++;
35638ce4a9a2SRandall Stewart 	if (SCTP_ASOC_CREATE_LOCK_CONTENDED(inp))
35648ce4a9a2SRandall Stewart 		being_refed++;
35658745f898SMichael Tuexen 	/* NOTE: 0 refcount also means no timers are referencing us. */
35660c7dc840SRandall Stewart 	if ((inp->refcount) ||
35678ce4a9a2SRandall Stewart 	    (being_refed) ||
35688ce4a9a2SRandall Stewart 	    (inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) {
3569b3a44e46SRandall Stewart #ifdef SCTP_LOG_CLOSING
3570b3a44e46SRandall Stewart 		sctp_log_closing(inp, NULL, 4);
3571b3a44e46SRandall Stewart #endif
3572f8829a4aSRandall Stewart 		sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
3573f8829a4aSRandall Stewart 		SCTP_INP_WUNLOCK(inp);
3574f8829a4aSRandall Stewart 		SCTP_ASOC_CREATE_UNLOCK(inp);
3575f8829a4aSRandall Stewart 		SCTP_INP_INFO_WUNLOCK();
3576f8829a4aSRandall Stewart 		return;
3577f8829a4aSRandall Stewart 	}
3578f8829a4aSRandall Stewart 	inp->sctp_ep.signature_change.type = 0;
3579f8829a4aSRandall Stewart 	inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE;
3580b3a44e46SRandall Stewart 	/*
3581b3a44e46SRandall Stewart 	 * Remove it from the list .. last thing we need a lock for.
3582b3a44e46SRandall Stewart 	 */
3583b3a44e46SRandall Stewart 	LIST_REMOVE(inp, sctp_list);
3584b3a44e46SRandall Stewart 	SCTP_INP_WUNLOCK(inp);
3585b3a44e46SRandall Stewart 	SCTP_ASOC_CREATE_UNLOCK(inp);
3586b3a44e46SRandall Stewart 	SCTP_INP_INFO_WUNLOCK();
3587f8829a4aSRandall Stewart 
3588f8829a4aSRandall Stewart #ifdef SCTP_LOG_CLOSING
3589f8829a4aSRandall Stewart 	sctp_log_closing(inp, NULL, 5);
3590f8829a4aSRandall Stewart #endif
3591830d754dSRandall Stewart 	if ((inp->sctp_asocidhash) != NULL) {
3592830d754dSRandall Stewart 		SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark);
3593830d754dSRandall Stewart 		inp->sctp_asocidhash = NULL;
3594830d754dSRandall Stewart 	}
35953c503c28SRandall Stewart 	/* sa_ignore FREED_MEMORY */
35964a9ef3f8SMichael Tuexen 	TAILQ_FOREACH_SAFE(sq, &inp->read_queue, next, nsq) {
3597f1f73e57SRandall Stewart 		/* Its only abandoned if it had data left */
3598f1f73e57SRandall Stewart 		if (sq->length)
3599f1f73e57SRandall Stewart 			SCTP_STAT_INCR(sctps_left_abandon);
3600f1f73e57SRandall Stewart 
3601f8829a4aSRandall Stewart 		TAILQ_REMOVE(&inp->read_queue, sq, next);
3602f8829a4aSRandall Stewart 		sctp_free_remote_addr(sq->whoFrom);
3603f8829a4aSRandall Stewart 		if (so)
36044e88d37aSMichael Tuexen 			so->so_rcv.sb_cc -= sq->length;
3605f8829a4aSRandall Stewart 		if (sq->data) {
3606f8829a4aSRandall Stewart 			sctp_m_freem(sq->data);
3607f8829a4aSRandall Stewart 			sq->data = NULL;
3608f8829a4aSRandall Stewart 		}
3609f8829a4aSRandall Stewart 		/*
3610f8829a4aSRandall Stewart 		 * no need to free the net count, since at this point all
3611f8829a4aSRandall Stewart 		 * assoc's are gone.
3612f8829a4aSRandall Stewart 		 */
361344249214SRandall Stewart 		sctp_free_a_readq(NULL, sq);
3614f8829a4aSRandall Stewart 	}
3615f8829a4aSRandall Stewart 	/* Now the sctp_pcb things */
3616f8829a4aSRandall Stewart 	/*
3617f8829a4aSRandall Stewart 	 * free each asoc if it is not already closed/free. we can't use the
3618f8829a4aSRandall Stewart 	 * macro here since le_next will get freed as part of the
3619f8829a4aSRandall Stewart 	 * sctp_free_assoc() call.
3620f8829a4aSRandall Stewart 	 */
3621f8829a4aSRandall Stewart 	if (ip_pcb->inp_options) {
3622f8829a4aSRandall Stewart 		(void)sctp_m_free(ip_pcb->inp_options);
3623f8829a4aSRandall Stewart 		ip_pcb->inp_options = 0;
3624f8829a4aSRandall Stewart 	}
3625f8829a4aSRandall Stewart #ifdef INET6
362694962f6bSMichael Tuexen 	if (ip_pcb->inp_vflag & INP_IPV6) {
362794962f6bSMichael Tuexen 		ip6_freepcbopts(ip_pcb->in6p_outputopts);
362894962f6bSMichael Tuexen 	}
3629f8829a4aSRandall Stewart #endif				/* INET6 */
3630f8829a4aSRandall Stewart 	ip_pcb->inp_vflag = 0;
3631f8829a4aSRandall Stewart 	/* free up authentication fields */
3632f8829a4aSRandall Stewart 	if (inp->sctp_ep.local_auth_chunks != NULL)
3633f8829a4aSRandall Stewart 		sctp_free_chunklist(inp->sctp_ep.local_auth_chunks);
3634f8829a4aSRandall Stewart 	if (inp->sctp_ep.local_hmacs != NULL)
3635f8829a4aSRandall Stewart 		sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3636f8829a4aSRandall Stewart 
36374a9ef3f8SMichael Tuexen 	LIST_FOREACH_SAFE(shared_key, &inp->sctp_ep.shared_keys, next, nshared_key) {
3638f8829a4aSRandall Stewart 		LIST_REMOVE(shared_key, next);
3639f8829a4aSRandall Stewart 		sctp_free_sharedkey(shared_key);
36403c503c28SRandall Stewart 		/* sa_ignore FREED_MEMORY */
3641f8829a4aSRandall Stewart 	}
3642f8829a4aSRandall Stewart 
3643f8829a4aSRandall Stewart 	/*
3644f8829a4aSRandall Stewart 	 * if we have an address list the following will free the list of
3645f8829a4aSRandall Stewart 	 * ifaddr's that are set into this ep. Again macro limitations here,
3646f8829a4aSRandall Stewart 	 * since the LIST_FOREACH could be a bad idea.
3647f8829a4aSRandall Stewart 	 */
36484a9ef3f8SMichael Tuexen 	LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
364942551e99SRandall Stewart 		sctp_remove_laddr(laddr);
3650f8829a4aSRandall Stewart 	}
3651a5d547adSRandall Stewart 
3652a5d547adSRandall Stewart #ifdef SCTP_TRACK_FREED_ASOCS
3653a5d547adSRandall Stewart 	/* TEMP CODE */
36544a9ef3f8SMichael Tuexen 	LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_free_list, sctp_tcblist, nasoc) {
3655a5d547adSRandall Stewart 		LIST_REMOVE(asoc, sctp_tcblist);
3656b3f1ea41SRandall Stewart 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), asoc);
3657a5d547adSRandall Stewart 		SCTP_DECR_ASOC_COUNT();
3658a5d547adSRandall Stewart 	}
3659a5d547adSRandall Stewart 	/* *** END TEMP CODE *** */
3660a5d547adSRandall Stewart #endif
3661f8829a4aSRandall Stewart 	/* Now lets see about freeing the EP hash table. */
3662f8829a4aSRandall Stewart 	if (inp->sctp_tcbhash != NULL) {
366344b7479bSRandall Stewart 		SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
366444b7479bSRandall Stewart 		inp->sctp_tcbhash = NULL;
3665f8829a4aSRandall Stewart 	}
3666f8829a4aSRandall Stewart 	/* Now we must put the ep memory back into the zone pool */
36676ba22f19SMichael Tuexen 	crfree(inp->ip_inp.inp.inp_cred);
3668e1461651SRandall Stewart 	INP_LOCK_DESTROY(&inp->ip_inp.inp);
3669f8829a4aSRandall Stewart 	SCTP_INP_LOCK_DESTROY(inp);
3670f8829a4aSRandall Stewart 	SCTP_INP_READ_DESTROY(inp);
3671f8829a4aSRandall Stewart 	SCTP_ASOC_CREATE_LOCK_DESTROY(inp);
3672b3f1ea41SRandall Stewart 	SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
3673f8829a4aSRandall Stewart 	SCTP_DECR_EP_COUNT();
3674f8829a4aSRandall Stewart }
3675f8829a4aSRandall Stewart 
3676f8829a4aSRandall Stewart struct sctp_nets *
3677f8829a4aSRandall Stewart sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
3678f8829a4aSRandall Stewart {
3679f8829a4aSRandall Stewart 	struct sctp_nets *net;
3680f8829a4aSRandall Stewart 
3681f8829a4aSRandall Stewart 	/* locate the address */
3682f8829a4aSRandall Stewart 	TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3683f8829a4aSRandall Stewart 		if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr))
3684f8829a4aSRandall Stewart 			return (net);
3685f8829a4aSRandall Stewart 	}
3686f8829a4aSRandall Stewart 	return (NULL);
3687f8829a4aSRandall Stewart }
3688f8829a4aSRandall Stewart 
3689f8829a4aSRandall Stewart int
369042551e99SRandall Stewart sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
3691f8829a4aSRandall Stewart {
369242551e99SRandall Stewart 	struct sctp_ifa *sctp_ifa;
3693f8829a4aSRandall Stewart 
3694851b7298SRandall Stewart 	sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED);
369542551e99SRandall Stewart 	if (sctp_ifa) {
3696f8829a4aSRandall Stewart 		return (1);
369742551e99SRandall Stewart 	} else {
3698f8829a4aSRandall Stewart 		return (0);
3699f8829a4aSRandall Stewart 	}
370042551e99SRandall Stewart }
370142551e99SRandall Stewart 
3702ad81507eSRandall Stewart /*
3703ad81507eSRandall Stewart  * add's a remote endpoint address, done with the INIT/INIT-ACK as well as
3704ad81507eSRandall Stewart  * when a ASCONF arrives that adds it. It will also initialize all the cwnd
3705ad81507eSRandall Stewart  * stats of stuff.
3706ad81507eSRandall Stewart  */
3707f8829a4aSRandall Stewart int
3708f8829a4aSRandall Stewart sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
37097154bf4aSMichael Tuexen     struct sctp_nets **netp, uint16_t port, int set_scope, int from)
3710f8829a4aSRandall Stewart {
3711f8829a4aSRandall Stewart 	/*
3712f8829a4aSRandall Stewart 	 * The following is redundant to the same lines in the
3713034b88b0SMichael Tuexen 	 * sctp_aloc_assoc() but is needed since others call the add address
3714034b88b0SMichael Tuexen 	 * function
3715f8829a4aSRandall Stewart 	 */
3716f8829a4aSRandall Stewart 	struct sctp_nets *net, *netfirst;
3717f8829a4aSRandall Stewart 	int addr_inscope;
3718f8829a4aSRandall Stewart 
3719ad81507eSRandall Stewart 	SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ",
3720ad81507eSRandall Stewart 	    from);
3721ad81507eSRandall Stewart 	SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr);
3722f8829a4aSRandall Stewart 
3723f8829a4aSRandall Stewart 	netfirst = sctp_findnet(stcb, newaddr);
3724f8829a4aSRandall Stewart 	if (netfirst) {
3725f8829a4aSRandall Stewart 		/*
3726f8829a4aSRandall Stewart 		 * Lie and return ok, we don't want to make the association
3727f8829a4aSRandall Stewart 		 * go away for this behavior. It will happen in the TCP
3728f8829a4aSRandall Stewart 		 * model in a connected socket. It does not reach the hash
3729f8829a4aSRandall Stewart 		 * table until after the association is built so it can't be
3730f8829a4aSRandall Stewart 		 * found. Mark as reachable, since the initial creation will
3731f8829a4aSRandall Stewart 		 * have been cleared and the NOT_IN_ASSOC flag will have
3732f8829a4aSRandall Stewart 		 * been added... and we don't want to end up removing it
3733f8829a4aSRandall Stewart 		 * back out.
3734f8829a4aSRandall Stewart 		 */
3735f8829a4aSRandall Stewart 		if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) {
3736f8829a4aSRandall Stewart 			netfirst->dest_state = (SCTP_ADDR_REACHABLE |
3737f8829a4aSRandall Stewart 			    SCTP_ADDR_UNCONFIRMED);
3738f8829a4aSRandall Stewart 		} else {
3739f8829a4aSRandall Stewart 			netfirst->dest_state = SCTP_ADDR_REACHABLE;
3740f8829a4aSRandall Stewart 		}
3741f8829a4aSRandall Stewart 
3742f8829a4aSRandall Stewart 		return (0);
3743f8829a4aSRandall Stewart 	}
3744f8829a4aSRandall Stewart 	addr_inscope = 1;
3745e6194c2eSMichael Tuexen 	switch (newaddr->sa_family) {
3746e6194c2eSMichael Tuexen #ifdef INET
3747e6194c2eSMichael Tuexen 	case AF_INET:
3748e6194c2eSMichael Tuexen 		{
3749f8829a4aSRandall Stewart 			struct sockaddr_in *sin;
3750f8829a4aSRandall Stewart 
3751f8829a4aSRandall Stewart 			sin = (struct sockaddr_in *)newaddr;
3752f8829a4aSRandall Stewart 			if (sin->sin_addr.s_addr == 0) {
3753f8829a4aSRandall Stewart 				/* Invalid address */
3754f8829a4aSRandall Stewart 				return (-1);
3755f8829a4aSRandall Stewart 			}
37565ba7f91fSMichael Tuexen 			/* zero out the zero area */
3757f8829a4aSRandall Stewart 			memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
3758f8829a4aSRandall Stewart 
3759f8829a4aSRandall Stewart 			/* assure len is set */
3760f8829a4aSRandall Stewart 			sin->sin_len = sizeof(struct sockaddr_in);
3761f8829a4aSRandall Stewart 			if (set_scope) {
3762f8829a4aSRandall Stewart 				if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
3763a1cb341bSMichael Tuexen 					stcb->asoc.scope.ipv4_local_scope = 1;
3764f8829a4aSRandall Stewart 				}
3765f8829a4aSRandall Stewart 			} else {
3766f8829a4aSRandall Stewart 				/* Validate the address is in scope */
3767f8829a4aSRandall Stewart 				if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) &&
3768a1cb341bSMichael Tuexen 				    (stcb->asoc.scope.ipv4_local_scope == 0)) {
3769f8829a4aSRandall Stewart 					addr_inscope = 0;
3770f8829a4aSRandall Stewart 				}
3771f8829a4aSRandall Stewart 			}
3772e6194c2eSMichael Tuexen 			break;
3773e6194c2eSMichael Tuexen 		}
3774e6194c2eSMichael Tuexen #endif
3775c54a18d2SRandall Stewart #ifdef INET6
3776e6194c2eSMichael Tuexen 	case AF_INET6:
3777e6194c2eSMichael Tuexen 		{
3778f8829a4aSRandall Stewart 			struct sockaddr_in6 *sin6;
3779f8829a4aSRandall Stewart 
3780f8829a4aSRandall Stewart 			sin6 = (struct sockaddr_in6 *)newaddr;
3781f8829a4aSRandall Stewart 			if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3782f8829a4aSRandall Stewart 				/* Invalid address */
3783f8829a4aSRandall Stewart 				return (-1);
3784f8829a4aSRandall Stewart 			}
3785f8829a4aSRandall Stewart 			/* assure len is set */
3786f8829a4aSRandall Stewart 			sin6->sin6_len = sizeof(struct sockaddr_in6);
3787f8829a4aSRandall Stewart 			if (set_scope) {
378842551e99SRandall Stewart 				if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) {
3789a1cb341bSMichael Tuexen 					stcb->asoc.scope.loopback_scope = 1;
3790a1cb341bSMichael Tuexen 					stcb->asoc.scope.local_scope = 0;
3791a1cb341bSMichael Tuexen 					stcb->asoc.scope.ipv4_local_scope = 1;
3792a1cb341bSMichael Tuexen 					stcb->asoc.scope.site_scope = 1;
3793f8829a4aSRandall Stewart 				} else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
3794f8829a4aSRandall Stewart 					/*
3795e6194c2eSMichael Tuexen 					 * If the new destination is a
3796e6194c2eSMichael Tuexen 					 * LINK_LOCAL we must have common
3797e6194c2eSMichael Tuexen 					 * site scope. Don't set the local
3798e6194c2eSMichael Tuexen 					 * scope since we may not share all
3799e6194c2eSMichael Tuexen 					 * links, only loopback can do this.
3800e6194c2eSMichael Tuexen 					 * Links on the local network would
3801e6194c2eSMichael Tuexen 					 * also be on our private network
3802e6194c2eSMichael Tuexen 					 * for v4 too.
3803f8829a4aSRandall Stewart 					 */
3804a1cb341bSMichael Tuexen 					stcb->asoc.scope.ipv4_local_scope = 1;
3805a1cb341bSMichael Tuexen 					stcb->asoc.scope.site_scope = 1;
3806f8829a4aSRandall Stewart 				} else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
3807f8829a4aSRandall Stewart 					/*
3808e6194c2eSMichael Tuexen 					 * If the new destination is
3809e6194c2eSMichael Tuexen 					 * SITE_LOCAL then we must have site
3810e6194c2eSMichael Tuexen 					 * scope in common.
3811f8829a4aSRandall Stewart 					 */
3812a1cb341bSMichael Tuexen 					stcb->asoc.scope.site_scope = 1;
3813f8829a4aSRandall Stewart 				}
3814f8829a4aSRandall Stewart 			} else {
3815f8829a4aSRandall Stewart 				/* Validate the address is in scope */
3816f8829a4aSRandall Stewart 				if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) &&
3817a1cb341bSMichael Tuexen 				    (stcb->asoc.scope.loopback_scope == 0)) {
3818f8829a4aSRandall Stewart 					addr_inscope = 0;
3819f8829a4aSRandall Stewart 				} else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
3820a1cb341bSMichael Tuexen 				    (stcb->asoc.scope.local_scope == 0)) {
3821f8829a4aSRandall Stewart 					addr_inscope = 0;
3822f8829a4aSRandall Stewart 				} else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
3823a1cb341bSMichael Tuexen 				    (stcb->asoc.scope.site_scope == 0)) {
3824f8829a4aSRandall Stewart 					addr_inscope = 0;
3825f8829a4aSRandall Stewart 				}
3826f8829a4aSRandall Stewart 			}
3827e6194c2eSMichael Tuexen 			break;
3828e6194c2eSMichael Tuexen 		}
3829c54a18d2SRandall Stewart #endif
3830e6194c2eSMichael Tuexen 	default:
3831f8829a4aSRandall Stewart 		/* not supported family type */
3832f8829a4aSRandall Stewart 		return (-1);
3833f8829a4aSRandall Stewart 	}
3834b3f1ea41SRandall Stewart 	net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets);
3835f8829a4aSRandall Stewart 	if (net == NULL) {
3836f8829a4aSRandall Stewart 		return (-1);
3837f8829a4aSRandall Stewart 	}
3838f8829a4aSRandall Stewart 	SCTP_INCR_RADDR_COUNT();
38395ba7f91fSMichael Tuexen 	memset(net, 0, sizeof(struct sctp_nets));
38406e55db54SRandall Stewart 	(void)SCTP_GETTIME_TIMEVAL(&net->start_time);
3841f8829a4aSRandall Stewart 	memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len);
3842e6194c2eSMichael Tuexen 	switch (newaddr->sa_family) {
3843e6194c2eSMichael Tuexen #ifdef INET
3844e6194c2eSMichael Tuexen 	case AF_INET:
3845f8829a4aSRandall Stewart 		((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport;
3846e6194c2eSMichael Tuexen 		break;
3847e6194c2eSMichael Tuexen #endif
3848e6194c2eSMichael Tuexen #ifdef INET6
3849e6194c2eSMichael Tuexen 	case AF_INET6:
3850f8829a4aSRandall Stewart 		((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport;
3851e6194c2eSMichael Tuexen 		break;
3852e6194c2eSMichael Tuexen #endif
3853e6194c2eSMichael Tuexen 	default:
3854e6194c2eSMichael Tuexen 		break;
3855f8829a4aSRandall Stewart 	}
385642551e99SRandall Stewart 	net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id);
385742551e99SRandall Stewart 	if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) {
3858a1cb341bSMichael Tuexen 		stcb->asoc.scope.loopback_scope = 1;
3859a1cb341bSMichael Tuexen 		stcb->asoc.scope.ipv4_local_scope = 1;
3860a1cb341bSMichael Tuexen 		stcb->asoc.scope.local_scope = 0;
3861a1cb341bSMichael Tuexen 		stcb->asoc.scope.site_scope = 1;
386242551e99SRandall Stewart 		addr_inscope = 1;
386342551e99SRandall Stewart 	}
3864f8829a4aSRandall Stewart 	net->failure_threshold = stcb->asoc.def_net_failure;
3865ca85e948SMichael Tuexen 	net->pf_threshold = stcb->asoc.def_net_pf_threshold;
3866f8829a4aSRandall Stewart 	if (addr_inscope == 0) {
3867f8829a4aSRandall Stewart 		net->dest_state = (SCTP_ADDR_REACHABLE |
3868f8829a4aSRandall Stewart 		    SCTP_ADDR_OUT_OF_SCOPE);
3869f8829a4aSRandall Stewart 	} else {
3870a5d547adSRandall Stewart 		if (from == SCTP_ADDR_IS_CONFIRMED)
3871a5d547adSRandall Stewart 			/* SCTP_ADDR_IS_CONFIRMED is passed by connect_x */
3872f8829a4aSRandall Stewart 			net->dest_state = SCTP_ADDR_REACHABLE;
3873f8829a4aSRandall Stewart 		else
3874f8829a4aSRandall Stewart 			net->dest_state = SCTP_ADDR_REACHABLE |
3875f8829a4aSRandall Stewart 			    SCTP_ADDR_UNCONFIRMED;
3876f8829a4aSRandall Stewart 	}
3877108df27cSRandall Stewart 	/*
3878108df27cSRandall Stewart 	 * We set this to 0, the timer code knows that this means its an
3879108df27cSRandall Stewart 	 * initial value
3880108df27cSRandall Stewart 	 */
3881f79aab18SRandall Stewart 	net->rto_needed = 1;
3882108df27cSRandall Stewart 	net->RTO = 0;
38839a972525SRandall Stewart 	net->RTO_measured = 0;
3884f8829a4aSRandall Stewart 	stcb->asoc.numnets++;
3885c9c58059SMichael Tuexen 	net->ref_count = 1;
3886a21779f0SRandall Stewart 	net->cwr_window_tsn = net->last_cwr_tsn = stcb->asoc.sending_seq - 1;
38877154bf4aSMichael Tuexen 	net->port = port;
3888b10f2dc8SMichael Tuexen 	net->dscp = stcb->asoc.default_dscp;
388958bdb691SMichael Tuexen #ifdef INET6
3890b10f2dc8SMichael Tuexen 	net->flowlabel = stcb->asoc.default_flowlabel;
389158bdb691SMichael Tuexen #endif
389280c79bbeSMichael Tuexen 	if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
3893ca85e948SMichael Tuexen 		net->dest_state |= SCTP_ADDR_NOHB;
3894ca85e948SMichael Tuexen 	} else {
3895ca85e948SMichael Tuexen 		net->dest_state &= ~SCTP_ADDR_NOHB;
3896ca85e948SMichael Tuexen 	}
389780c79bbeSMichael Tuexen 	if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DO_NOT_PMTUD)) {
389880c79bbeSMichael Tuexen 		net->dest_state |= SCTP_ADDR_NO_PMTUD;
389980c79bbeSMichael Tuexen 	} else {
390080c79bbeSMichael Tuexen 		net->dest_state &= ~SCTP_ADDR_NO_PMTUD;
390180c79bbeSMichael Tuexen 	}
3902ca85e948SMichael Tuexen 	net->heart_beat_delay = stcb->asoc.heart_beat_delay;
3903f8829a4aSRandall Stewart 	/* Init the timer structure */
3904139bc87fSRandall Stewart 	SCTP_OS_TIMER_INIT(&net->rxt_timer.timer);
3905139bc87fSRandall Stewart 	SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer);
3906ca85e948SMichael Tuexen 	SCTP_OS_TIMER_INIT(&net->hb_timer.timer);
3907f8829a4aSRandall Stewart 
3908f8829a4aSRandall Stewart 	/* Now generate a route for this guy */
39095e2c2d87SRandall Stewart #ifdef INET6
3910f8829a4aSRandall Stewart 	/* KAME hack: embed scopeid */
3911f8829a4aSRandall Stewart 	if (newaddr->sa_family == AF_INET6) {
3912f8829a4aSRandall Stewart 		struct sockaddr_in6 *sin6;
3913f8829a4aSRandall Stewart 
3914f8829a4aSRandall Stewart 		sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3915482444b4SRandall Stewart 		(void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone));
3916f8829a4aSRandall Stewart 		sin6->sin6_scope_id = 0;
3917f8829a4aSRandall Stewart 	}
39185e2c2d87SRandall Stewart #endif
3919d089f9b9SMichael Tuexen 	SCTP_RTALLOC((sctp_route_t *)&net->ro,
3920d089f9b9SMichael Tuexen 	    stcb->asoc.vrf_id,
3921d089f9b9SMichael Tuexen 	    stcb->sctp_ep->fibnum);
3922bff64a4dSRandall Stewart 
392310e0318aSMichael Tuexen 	net->src_addr_selected = 0;
392417205eccSRandall Stewart 	if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) {
392517205eccSRandall Stewart 		/* Get source address */
392617205eccSRandall Stewart 		net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep,
392717205eccSRandall Stewart 		    stcb,
392817205eccSRandall Stewart 		    (sctp_route_t *)&net->ro,
392917205eccSRandall Stewart 		    net,
393017205eccSRandall Stewart 		    0,
393117205eccSRandall Stewart 		    stcb->asoc.vrf_id);
393228a6addeSMichael Tuexen 		if (stcb->asoc.default_mtu > 0) {
393328a6addeSMichael Tuexen 			net->mtu = stcb->asoc.default_mtu;
393428a6addeSMichael Tuexen 			switch (net->ro._l_addr.sa.sa_family) {
393528a6addeSMichael Tuexen #ifdef INET
393628a6addeSMichael Tuexen 			case AF_INET:
393728a6addeSMichael Tuexen 				net->mtu += SCTP_MIN_V4_OVERHEAD;
393828a6addeSMichael Tuexen 				break;
393928a6addeSMichael Tuexen #endif
394028a6addeSMichael Tuexen #ifdef INET6
394128a6addeSMichael Tuexen 			case AF_INET6:
394228a6addeSMichael Tuexen 				net->mtu += SCTP_MIN_OVERHEAD;
394328a6addeSMichael Tuexen 				break;
394428a6addeSMichael Tuexen #endif
394528a6addeSMichael Tuexen 			default:
394628a6addeSMichael Tuexen 				break;
394728a6addeSMichael Tuexen 			}
394828a6addeSMichael Tuexen #if defined(INET) || defined(INET6)
394928a6addeSMichael Tuexen 			if (net->port) {
395028a6addeSMichael Tuexen 				net->mtu += (uint32_t)sizeof(struct udphdr);
395128a6addeSMichael Tuexen 			}
395228a6addeSMichael Tuexen #endif
395328a6addeSMichael Tuexen 		} else if (net->ro._s_addr != NULL) {
395410e0318aSMichael Tuexen 			uint32_t imtu, rmtu, hcmtu;
395510e0318aSMichael Tuexen 
3956f64a0b06SMichael Tuexen 			net->src_addr_selected = 1;
395717205eccSRandall Stewart 			/* Now get the interface MTU */
3958f64a0b06SMichael Tuexen 			if (net->ro._s_addr->ifn_p != NULL) {
395910e0318aSMichael Tuexen 				imtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p);
3960f64a0b06SMichael Tuexen 			} else {
396110e0318aSMichael Tuexen 				imtu = 0;
3962f64a0b06SMichael Tuexen 			}
3963983066f0SAlexander V. Chernikov 			rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_nh);
396410e0318aSMichael Tuexen 			hcmtu = sctp_hc_get_mtu(&net->ro._l_addr, stcb->sctp_ep->fibnum);
396510e0318aSMichael Tuexen 			net->mtu = sctp_min_mtu(hcmtu, rmtu, imtu);
396617205eccSRandall Stewart 		}
3967a62e467aSMichael Tuexen 	}
3968a62e467aSMichael Tuexen 	if (net->mtu == 0) {
396928a6addeSMichael Tuexen 		if (stcb->asoc.default_mtu > 0) {
397028a6addeSMichael Tuexen 			net->mtu = stcb->asoc.default_mtu;
397128a6addeSMichael Tuexen 			switch (net->ro._l_addr.sa.sa_family) {
397228a6addeSMichael Tuexen #ifdef INET
397328a6addeSMichael Tuexen 			case AF_INET:
397428a6addeSMichael Tuexen 				net->mtu += SCTP_MIN_V4_OVERHEAD;
397528a6addeSMichael Tuexen 				break;
397628a6addeSMichael Tuexen #endif
397728a6addeSMichael Tuexen #ifdef INET6
397828a6addeSMichael Tuexen 			case AF_INET6:
397928a6addeSMichael Tuexen 				net->mtu += SCTP_MIN_OVERHEAD;
398028a6addeSMichael Tuexen 				break;
398128a6addeSMichael Tuexen #endif
398228a6addeSMichael Tuexen 			default:
398328a6addeSMichael Tuexen 				break;
398428a6addeSMichael Tuexen 			}
398528a6addeSMichael Tuexen #if defined(INET) || defined(INET6)
398628a6addeSMichael Tuexen 			if (net->port) {
398728a6addeSMichael Tuexen 				net->mtu += (uint32_t)sizeof(struct udphdr);
398828a6addeSMichael Tuexen 			}
398928a6addeSMichael Tuexen #endif
399028a6addeSMichael Tuexen 		} else {
3991a62e467aSMichael Tuexen 			switch (newaddr->sa_family) {
3992a62e467aSMichael Tuexen #ifdef INET
3993a62e467aSMichael Tuexen 			case AF_INET:
3994a62e467aSMichael Tuexen 				net->mtu = SCTP_DEFAULT_MTU;
3995a62e467aSMichael Tuexen 				break;
3996a62e467aSMichael Tuexen #endif
3997a62e467aSMichael Tuexen #ifdef INET6
3998a62e467aSMichael Tuexen 			case AF_INET6:
3999a62e467aSMichael Tuexen 				net->mtu = 1280;
4000a62e467aSMichael Tuexen 				break;
4001a62e467aSMichael Tuexen #endif
4002a62e467aSMichael Tuexen 			default:
4003a62e467aSMichael Tuexen 				break;
4004a62e467aSMichael Tuexen 			}
4005a62e467aSMichael Tuexen 		}
400628a6addeSMichael Tuexen 	}
40074474d71aSMichael Tuexen #if defined(INET) || defined(INET6)
4008a62e467aSMichael Tuexen 	if (net->port) {
4009a62e467aSMichael Tuexen 		net->mtu -= (uint32_t)sizeof(struct udphdr);
4010a62e467aSMichael Tuexen 	}
40114474d71aSMichael Tuexen #endif
4012a5d547adSRandall Stewart 	if (from == SCTP_ALLOC_ASOC) {
4013f8829a4aSRandall Stewart 		stcb->asoc.smallest_mtu = net->mtu;
4014f8829a4aSRandall Stewart 	}
4015a62e467aSMichael Tuexen 	if (stcb->asoc.smallest_mtu > net->mtu) {
4016ec70917fSMichael Tuexen 		sctp_pathmtu_adjustment(stcb, net->mtu);
4017f8829a4aSRandall Stewart 	}
4018c54a18d2SRandall Stewart #ifdef INET6
4019c54a18d2SRandall Stewart 	if (newaddr->sa_family == AF_INET6) {
4020c54a18d2SRandall Stewart 		struct sockaddr_in6 *sin6;
4021c54a18d2SRandall Stewart 
4022c54a18d2SRandall Stewart 		sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
4023c54a18d2SRandall Stewart 		(void)sa6_recoverscope(sin6);
4024c54a18d2SRandall Stewart 	}
4025c54a18d2SRandall Stewart #endif
4026a62e467aSMichael Tuexen 
4027b54d3a6cSRandall Stewart 	/* JRS - Use the congestion control given in the CC module */
4028299108c5SRandall Stewart 	if (stcb->asoc.cc_functions.sctp_set_initial_cc_param != NULL)
4029299108c5SRandall Stewart 		(*stcb->asoc.cc_functions.sctp_set_initial_cc_param) (stcb, net);
4030f8829a4aSRandall Stewart 
4031f8829a4aSRandall Stewart 	/*
4032f8829a4aSRandall Stewart 	 * CMT: CUC algo - set find_pseudo_cumack to TRUE (1) at beginning
4033f8829a4aSRandall Stewart 	 * of assoc (2005/06/27, iyengar@cis.udel.edu)
4034f8829a4aSRandall Stewart 	 */
4035f8829a4aSRandall Stewart 	net->find_pseudo_cumack = 1;
4036f8829a4aSRandall Stewart 	net->find_rtx_pseudo_cumack = 1;
40374c97400fSMichael Tuexen 	/* Choose an initial flowid. */
40384c97400fSMichael Tuexen 	net->flowid = stcb->asoc.my_vtag ^
40394c97400fSMichael Tuexen 	    ntohs(stcb->rport) ^
40404c97400fSMichael Tuexen 	    ntohs(stcb->sctp_ep->sctp_lport);
404136ad8372SSepherosa Ziehau 	net->flowtype = M_HASHTYPE_OPAQUE_HASH;
40427ffa2290SMichael Tuexen 	if (netp) {
40437ffa2290SMichael Tuexen 		*netp = net;
40447ffa2290SMichael Tuexen 	}
4045f8829a4aSRandall Stewart 	netfirst = TAILQ_FIRST(&stcb->asoc.nets);
4046983066f0SAlexander V. Chernikov 	if (net->ro.ro_nh == NULL) {
4047f8829a4aSRandall Stewart 		/* Since we have no route put it at the back */
4048f8829a4aSRandall Stewart 		TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4049f8829a4aSRandall Stewart 	} else if (netfirst == NULL) {
4050f8829a4aSRandall Stewart 		/* We are the first one in the pool. */
4051f8829a4aSRandall Stewart 		TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4052983066f0SAlexander V. Chernikov 	} else if (netfirst->ro.ro_nh == NULL) {
4053f8829a4aSRandall Stewart 		/*
4054f8829a4aSRandall Stewart 		 * First one has NO route. Place this one ahead of the first
4055f8829a4aSRandall Stewart 		 * one.
4056f8829a4aSRandall Stewart 		 */
4057f8829a4aSRandall Stewart 		TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4058983066f0SAlexander V. Chernikov 	} else if (net->ro.ro_nh->nh_ifp != netfirst->ro.ro_nh->nh_ifp) {
4059f8829a4aSRandall Stewart 		/*
4060f8829a4aSRandall Stewart 		 * This one has a different interface than the one at the
4061f8829a4aSRandall Stewart 		 * top of the list. Place it ahead.
4062f8829a4aSRandall Stewart 		 */
4063f8829a4aSRandall Stewart 		TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4064f8829a4aSRandall Stewart 	} else {
4065f8829a4aSRandall Stewart 		/*
4066f8829a4aSRandall Stewart 		 * Ok we have the same interface as the first one. Move
4067f8829a4aSRandall Stewart 		 * forward until we find either a) one with a NULL route...
4068f8829a4aSRandall Stewart 		 * insert ahead of that b) one with a different ifp.. insert
4069f8829a4aSRandall Stewart 		 * after that. c) end of the list.. insert at the tail.
4070f8829a4aSRandall Stewart 		 */
4071f8829a4aSRandall Stewart 		struct sctp_nets *netlook;
4072f8829a4aSRandall Stewart 
4073f8829a4aSRandall Stewart 		do {
4074f8829a4aSRandall Stewart 			netlook = TAILQ_NEXT(netfirst, sctp_next);
4075f8829a4aSRandall Stewart 			if (netlook == NULL) {
4076f8829a4aSRandall Stewart 				/* End of the list */
4077bff64a4dSRandall Stewart 				TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4078f8829a4aSRandall Stewart 				break;
4079983066f0SAlexander V. Chernikov 			} else if (netlook->ro.ro_nh == NULL) {
4080f8829a4aSRandall Stewart 				/* next one has NO route */
4081f8829a4aSRandall Stewart 				TAILQ_INSERT_BEFORE(netfirst, net, sctp_next);
4082f8829a4aSRandall Stewart 				break;
4083983066f0SAlexander V. Chernikov 			} else if (netlook->ro.ro_nh->nh_ifp != net->ro.ro_nh->nh_ifp) {
4084f8829a4aSRandall Stewart 				TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook,
4085f8829a4aSRandall Stewart 				    net, sctp_next);
4086f8829a4aSRandall Stewart 				break;
4087f8829a4aSRandall Stewart 			}
4088f8829a4aSRandall Stewart 			/* Shift forward */
4089f8829a4aSRandall Stewart 			netfirst = netlook;
4090f8829a4aSRandall Stewart 		} while (netlook != NULL);
4091f8829a4aSRandall Stewart 	}
4092f8829a4aSRandall Stewart 
4093f8829a4aSRandall Stewart 	/* got to have a primary set */
4094f8829a4aSRandall Stewart 	if (stcb->asoc.primary_destination == 0) {
4095f8829a4aSRandall Stewart 		stcb->asoc.primary_destination = net;
4096983066f0SAlexander V. Chernikov 	} else if ((stcb->asoc.primary_destination->ro.ro_nh == NULL) &&
4097983066f0SAlexander V. Chernikov 		    (net->ro.ro_nh) &&
4098f8829a4aSRandall Stewart 	    ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
4099f8829a4aSRandall Stewart 		/* No route to current primary adopt new primary */
4100f8829a4aSRandall Stewart 		stcb->asoc.primary_destination = net;
4101f8829a4aSRandall Stewart 	}
4102f8829a4aSRandall Stewart 	/* Validate primary is first */
4103f8829a4aSRandall Stewart 	net = TAILQ_FIRST(&stcb->asoc.nets);
4104f8829a4aSRandall Stewart 	if ((net != stcb->asoc.primary_destination) &&
4105f8829a4aSRandall Stewart 	    (stcb->asoc.primary_destination)) {
4106f8829a4aSRandall Stewart 		/*
4107f8829a4aSRandall Stewart 		 * first one on the list is NOT the primary sctp_cmpaddr()
4108b1ce21c6SRebecca Cran 		 * is much more efficient if the primary is the first on the
4109f8829a4aSRandall Stewart 		 * list, make it so.
4110f8829a4aSRandall Stewart 		 */
4111f8829a4aSRandall Stewart 		TAILQ_REMOVE(&stcb->asoc.nets,
4112f8829a4aSRandall Stewart 		    stcb->asoc.primary_destination, sctp_next);
4113f8829a4aSRandall Stewart 		TAILQ_INSERT_HEAD(&stcb->asoc.nets,
4114f8829a4aSRandall Stewart 		    stcb->asoc.primary_destination, sctp_next);
4115f8829a4aSRandall Stewart 	}
4116f8829a4aSRandall Stewart 	return (0);
4117f8829a4aSRandall Stewart }
4118f8829a4aSRandall Stewart 
4119830d754dSRandall Stewart static uint32_t
4120b0471b4bSMichael Tuexen sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
4121b0471b4bSMichael Tuexen {
4122830d754dSRandall Stewart 	uint32_t id;
4123830d754dSRandall Stewart 	struct sctpasochead *head;
4124830d754dSRandall Stewart 	struct sctp_tcb *lstcb;
4125830d754dSRandall Stewart 
4126830d754dSRandall Stewart try_again:
4127830d754dSRandall Stewart 	if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
4128830d754dSRandall Stewart 		/* TSNH */
4129830d754dSRandall Stewart 		return (0);
4130830d754dSRandall Stewart 	}
4131f3d06a3cSRandall Stewart 	/*
4132e2e7c62eSMichael Tuexen 	 * We don't allow assoc id to be one of SCTP_FUTURE_ASSOC,
4133e2e7c62eSMichael Tuexen 	 * SCTP_CURRENT_ASSOC and SCTP_ALL_ASSOC.
4134f3d06a3cSRandall Stewart 	 */
4135e2e7c62eSMichael Tuexen 	if (inp->sctp_associd_counter <= SCTP_ALL_ASSOC) {
4136e2e7c62eSMichael Tuexen 		inp->sctp_associd_counter = SCTP_ALL_ASSOC + 1;
4137f3d06a3cSRandall Stewart 	}
4138830d754dSRandall Stewart 	id = inp->sctp_associd_counter;
4139830d754dSRandall Stewart 	inp->sctp_associd_counter++;
4140830d754dSRandall Stewart 	lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t)id, 0);
4141830d754dSRandall Stewart 	if (lstcb) {
4142830d754dSRandall Stewart 		goto try_again;
4143830d754dSRandall Stewart 	}
4144830d754dSRandall Stewart 	head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
4145830d754dSRandall Stewart 	LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash);
4146830d754dSRandall Stewart 	stcb->asoc.in_asocid_hash = 1;
4147be62c88bSMichael Tuexen 	return (id);
4148830d754dSRandall Stewart }
4149830d754dSRandall Stewart 
4150f8829a4aSRandall Stewart /*
4151f8829a4aSRandall Stewart  * allocate an association and add it to the endpoint. The caller must be
4152f8829a4aSRandall Stewart  * careful to add all additional addresses once they are know right away or
4153f8829a4aSRandall Stewart  * else the assoc will be may experience a blackout scenario.
4154f8829a4aSRandall Stewart  */
4155f8829a4aSRandall Stewart struct sctp_tcb *
4156f8829a4aSRandall Stewart sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
4157c7f048abSMichael Tuexen     int *error, uint32_t override_tag, uint32_t initial_tsn,
4158c7f048abSMichael Tuexen     uint32_t vrf_id, uint16_t o_streams, uint16_t port,
41598a956abeSMichael Tuexen     struct thread *p,
41608a956abeSMichael Tuexen     int initialize_auth_params)
4161f8829a4aSRandall Stewart {
416252be287eSRandall Stewart 	/* note the p argument is only valid in unbound sockets */
416352be287eSRandall Stewart 
4164f8829a4aSRandall Stewart 	struct sctp_tcb *stcb;
4165f8829a4aSRandall Stewart 	struct sctp_association *asoc;
4166f8829a4aSRandall Stewart 	struct sctpasochead *head;
4167f8829a4aSRandall Stewart 	uint16_t rport;
4168f8829a4aSRandall Stewart 	int err;
4169f8829a4aSRandall Stewart 
4170f8829a4aSRandall Stewart 	/*
4171f8829a4aSRandall Stewart 	 * Assumption made here: Caller has done a
4172f8829a4aSRandall Stewart 	 * sctp_findassociation_ep_addr(ep, addr's); to make sure the
4173f8829a4aSRandall Stewart 	 * address does not exist already.
4174f8829a4aSRandall Stewart 	 */
4175b3f1ea41SRandall Stewart 	if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) {
4176f8829a4aSRandall Stewart 		/* Hit max assoc, sorry no more */
4177c4739e2fSRandall Stewart 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4178f8829a4aSRandall Stewart 		*error = ENOBUFS;
4179f8829a4aSRandall Stewart 		return (NULL);
4180f8829a4aSRandall Stewart 	}
4181ad81507eSRandall Stewart 	if (firstaddr == NULL) {
4182c4739e2fSRandall Stewart 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4183ad81507eSRandall Stewart 		*error = EINVAL;
4184ad81507eSRandall Stewart 		return (NULL);
4185ad81507eSRandall Stewart 	}
4186f8829a4aSRandall Stewart 	SCTP_INP_RLOCK(inp);
41876d9e8f2bSRandall Stewart 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
41886d9e8f2bSRandall Stewart 	    ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) ||
41896d9e8f2bSRandall Stewart 	    (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4190f8829a4aSRandall Stewart 		/*
4191f8829a4aSRandall Stewart 		 * If its in the TCP pool, its NOT allowed to create an
4192f8829a4aSRandall Stewart 		 * association. The parent listener needs to call
4193f8829a4aSRandall Stewart 		 * sctp_aloc_assoc.. or the one-2-many socket. If a peeled
4194f8829a4aSRandall Stewart 		 * off, or connected one does this.. its an error.
4195f8829a4aSRandall Stewart 		 */
4196f8829a4aSRandall Stewart 		SCTP_INP_RUNLOCK(inp);
4197c4739e2fSRandall Stewart 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4198f8829a4aSRandall Stewart 		*error = EINVAL;
4199f8829a4aSRandall Stewart 		return (NULL);
4200f8829a4aSRandall Stewart 	}
4201c55b70ceSMichael Tuexen 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
4202c55b70ceSMichael Tuexen 	    (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)) {
4203c55b70ceSMichael Tuexen 		if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) ||
4204c55b70ceSMichael Tuexen 		    (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED)) {
4205c55b70ceSMichael Tuexen 			SCTP_INP_RUNLOCK(inp);
4206c55b70ceSMichael Tuexen 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4207c55b70ceSMichael Tuexen 			*error = EINVAL;
4208c55b70ceSMichael Tuexen 			return (NULL);
4209c55b70ceSMichael Tuexen 		}
4210c55b70ceSMichael Tuexen 	}
4211ad81507eSRandall Stewart 	SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:");
4212f8829a4aSRandall Stewart #ifdef SCTP_DEBUG
42136e55db54SRandall Stewart 	if (firstaddr) {
4214ad81507eSRandall Stewart 		SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr);
4215e6194c2eSMichael Tuexen 		switch (firstaddr->sa_family) {
4216e6194c2eSMichael Tuexen #ifdef INET
4217e6194c2eSMichael Tuexen 		case AF_INET:
4218ad81507eSRandall Stewart 			SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4219f8829a4aSRandall Stewart 			    ntohs(((struct sockaddr_in *)firstaddr)->sin_port));
4220e6194c2eSMichael Tuexen 			break;
4221e6194c2eSMichael Tuexen #endif
4222e6194c2eSMichael Tuexen #ifdef INET6
4223e6194c2eSMichael Tuexen 		case AF_INET6:
4224e6194c2eSMichael Tuexen 			SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4225e6194c2eSMichael Tuexen 			    ntohs(((struct sockaddr_in6 *)firstaddr)->sin6_port));
4226e6194c2eSMichael Tuexen 			break;
4227e6194c2eSMichael Tuexen #endif
4228e6194c2eSMichael Tuexen 		default:
4229e6194c2eSMichael Tuexen 			break;
4230e6194c2eSMichael Tuexen 		}
4231ad81507eSRandall Stewart 	} else {
4232ad81507eSRandall Stewart 		SCTPDBG(SCTP_DEBUG_PCB3, "None\n");
4233f8829a4aSRandall Stewart 	}
4234f8829a4aSRandall Stewart #endif				/* SCTP_DEBUG */
4235e6194c2eSMichael Tuexen 	switch (firstaddr->sa_family) {
4236e6194c2eSMichael Tuexen #ifdef INET
4237e6194c2eSMichael Tuexen 	case AF_INET:
4238e6194c2eSMichael Tuexen 		{
4239f8829a4aSRandall Stewart 			struct sockaddr_in *sin;
4240f8829a4aSRandall Stewart 
4241f8829a4aSRandall Stewart 			sin = (struct sockaddr_in *)firstaddr;
424292776dfdSMichael Tuexen 			if ((ntohs(sin->sin_port) == 0) ||
424392776dfdSMichael Tuexen 			    (sin->sin_addr.s_addr == INADDR_ANY) ||
424492776dfdSMichael Tuexen 			    (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
4245b15f5411SMichael Tuexen 			    IN_MULTICAST(ntohl(sin->sin_addr.s_addr)) ||
4246b15f5411SMichael Tuexen 			    (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) != 0) &&
4247b15f5411SMichael Tuexen 			    (SCTP_IPV6_V6ONLY(inp) != 0))) {
4248f8829a4aSRandall Stewart 				/* Invalid address */
4249f8829a4aSRandall Stewart 				SCTP_INP_RUNLOCK(inp);
4250c4739e2fSRandall Stewart 				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4251f8829a4aSRandall Stewart 				*error = EINVAL;
4252f8829a4aSRandall Stewart 				return (NULL);
4253f8829a4aSRandall Stewart 			}
4254f8829a4aSRandall Stewart 			rport = sin->sin_port;
4255e6194c2eSMichael Tuexen 			break;
4256e6194c2eSMichael Tuexen 		}
4257e6194c2eSMichael Tuexen #endif
4258e6194c2eSMichael Tuexen #ifdef INET6
4259e6194c2eSMichael Tuexen 	case AF_INET6:
4260e6194c2eSMichael Tuexen 		{
4261f8829a4aSRandall Stewart 			struct sockaddr_in6 *sin6;
4262f8829a4aSRandall Stewart 
4263f8829a4aSRandall Stewart 			sin6 = (struct sockaddr_in6 *)firstaddr;
426492776dfdSMichael Tuexen 			if ((ntohs(sin6->sin6_port) == 0) ||
426592776dfdSMichael Tuexen 			    IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
4266b15f5411SMichael Tuexen 			    IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr) ||
4267b15f5411SMichael Tuexen 			    ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0)) {
4268f8829a4aSRandall Stewart 				/* Invalid address */
4269f8829a4aSRandall Stewart 				SCTP_INP_RUNLOCK(inp);
4270c4739e2fSRandall Stewart 				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4271f8829a4aSRandall Stewart 				*error = EINVAL;
4272f8829a4aSRandall Stewart 				return (NULL);
4273f8829a4aSRandall Stewart 			}
4274f8829a4aSRandall Stewart 			rport = sin6->sin6_port;
4275e6194c2eSMichael Tuexen 			break;
4276e6194c2eSMichael Tuexen 		}
4277e6194c2eSMichael Tuexen #endif
4278e6194c2eSMichael Tuexen 	default:
4279f8829a4aSRandall Stewart 		/* not supported family type */
4280f8829a4aSRandall Stewart 		SCTP_INP_RUNLOCK(inp);
4281c4739e2fSRandall Stewart 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4282f8829a4aSRandall Stewart 		*error = EINVAL;
4283f8829a4aSRandall Stewart 		return (NULL);
4284f8829a4aSRandall Stewart 	}
4285f8829a4aSRandall Stewart 	SCTP_INP_RUNLOCK(inp);
4286f8829a4aSRandall Stewart 	if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4287f8829a4aSRandall Stewart 		/*
4288f8829a4aSRandall Stewart 		 * If you have not performed a bind, then we need to do the
4289b1ce21c6SRebecca Cran 		 * ephemeral bind for you.
4290f8829a4aSRandall Stewart 		 */
42912cf33471SMichael Tuexen 		if ((err = sctp_inpcb_bind(inp->sctp_socket, NULL, NULL, p))) {
4292f8829a4aSRandall Stewart 			/* bind error, probably perm */
4293f8829a4aSRandall Stewart 			*error = err;
4294f8829a4aSRandall Stewart 			return (NULL);
4295f8829a4aSRandall Stewart 		}
4296f8829a4aSRandall Stewart 	}
4297b3f1ea41SRandall Stewart 	stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb);
4298f8829a4aSRandall Stewart 	if (stcb == NULL) {
4299f8829a4aSRandall Stewart 		/* out of memory? */
4300c4739e2fSRandall Stewart 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
4301f8829a4aSRandall Stewart 		*error = ENOMEM;
4302f8829a4aSRandall Stewart 		return (NULL);
4303f8829a4aSRandall Stewart 	}
4304f8829a4aSRandall Stewart 	SCTP_INCR_ASOC_COUNT();
4305f8829a4aSRandall Stewart 
43065ba7f91fSMichael Tuexen 	memset(stcb, 0, sizeof(*stcb));
4307f8829a4aSRandall Stewart 	asoc = &stcb->asoc;
4308830d754dSRandall Stewart 
4309f8829a4aSRandall Stewart 	SCTP_TCB_LOCK_INIT(stcb);
4310f8829a4aSRandall Stewart 	SCTP_TCB_SEND_LOCK_INIT(stcb);
4311830d754dSRandall Stewart 	stcb->rport = rport;
4312f8829a4aSRandall Stewart 	/* setup back pointer's */
4313f8829a4aSRandall Stewart 	stcb->sctp_ep = inp;
4314f8829a4aSRandall Stewart 	stcb->sctp_socket = inp->sctp_socket;
4315c7f048abSMichael Tuexen 	if ((err = sctp_init_asoc(inp, stcb, override_tag, initial_tsn, vrf_id, o_streams))) {
4316f8829a4aSRandall Stewart 		/* failed */
4317f8829a4aSRandall Stewart 		SCTP_TCB_LOCK_DESTROY(stcb);
4318f8829a4aSRandall Stewart 		SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4319b3f1ea41SRandall Stewart 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4320f8829a4aSRandall Stewart 		SCTP_DECR_ASOC_COUNT();
4321f8829a4aSRandall Stewart 		*error = err;
4322f8829a4aSRandall Stewart 		return (NULL);
4323f8829a4aSRandall Stewart 	}
4324f8829a4aSRandall Stewart 	/* and the port */
4325f8829a4aSRandall Stewart 	SCTP_INP_INFO_WLOCK();
4326f8829a4aSRandall Stewart 	SCTP_INP_WLOCK(inp);
4327f8829a4aSRandall Stewart 	if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
4328f8829a4aSRandall Stewart 		/* inpcb freed while alloc going on */
4329f8829a4aSRandall Stewart 		SCTP_TCB_LOCK_DESTROY(stcb);
4330f8829a4aSRandall Stewart 		SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4331b3f1ea41SRandall Stewart 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4332f8829a4aSRandall Stewart 		SCTP_INP_WUNLOCK(inp);
4333f8829a4aSRandall Stewart 		SCTP_INP_INFO_WUNLOCK();
4334f8829a4aSRandall Stewart 		SCTP_DECR_ASOC_COUNT();
4335c4739e2fSRandall Stewart 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4336f8829a4aSRandall Stewart 		*error = EINVAL;
4337f8829a4aSRandall Stewart 		return (NULL);
4338f8829a4aSRandall Stewart 	}
4339f8829a4aSRandall Stewart 	SCTP_TCB_LOCK(stcb);
4340f8829a4aSRandall Stewart 
4341be62c88bSMichael Tuexen 	asoc->assoc_id = sctp_aloc_a_assoc_id(inp, stcb);
4342f8829a4aSRandall Stewart 	/* now that my_vtag is set, add it to the hash */
4343830d754dSRandall Stewart 	head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))];
4344f8829a4aSRandall Stewart 	/* put it in the bucket in the vtag hash of assoc's for the system */
4345f8829a4aSRandall Stewart 	LIST_INSERT_HEAD(head, stcb, sctp_asocs);
4346f8829a4aSRandall Stewart 	SCTP_INP_INFO_WUNLOCK();
4347f8829a4aSRandall Stewart 
43486176f9d6SMichael Tuexen 	if (sctp_add_remote_addr(stcb, firstaddr, NULL, port, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC)) {
4349f8829a4aSRandall Stewart 		/* failure.. memory error? */
4350207304d4SRandall Stewart 		if (asoc->strmout) {
4351207304d4SRandall Stewart 			SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4352207304d4SRandall Stewart 			asoc->strmout = NULL;
4353207304d4SRandall Stewart 		}
4354207304d4SRandall Stewart 		if (asoc->mapping_array) {
4355207304d4SRandall Stewart 			SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4356207304d4SRandall Stewart 			asoc->mapping_array = NULL;
4357207304d4SRandall Stewart 		}
4358bf1be571SRandall Stewart 		if (asoc->nr_mapping_array) {
4359bf1be571SRandall Stewart 			SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4360bf1be571SRandall Stewart 			asoc->nr_mapping_array = NULL;
4361bf1be571SRandall Stewart 		}
4362f8829a4aSRandall Stewart 		SCTP_DECR_ASOC_COUNT();
43633b3d05d7SMichael Tuexen 		SCTP_TCB_UNLOCK(stcb);
4364f8829a4aSRandall Stewart 		SCTP_TCB_LOCK_DESTROY(stcb);
4365f8829a4aSRandall Stewart 		SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4366830d754dSRandall Stewart 		LIST_REMOVE(stcb, sctp_tcbasocidhash);
4367b3f1ea41SRandall Stewart 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4368bff64a4dSRandall Stewart 		SCTP_INP_WUNLOCK(inp);
4369c4739e2fSRandall Stewart 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4370f8829a4aSRandall Stewart 		*error = ENOBUFS;
4371f8829a4aSRandall Stewart 		return (NULL);
4372f8829a4aSRandall Stewart 	}
4373f8829a4aSRandall Stewart 	/* Init all the timers */
4374139bc87fSRandall Stewart 	SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer);
4375139bc87fSRandall Stewart 	SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer);
4376139bc87fSRandall Stewart 	SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer);
4377139bc87fSRandall Stewart 	SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer);
4378139bc87fSRandall Stewart 	SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer);
4379851b7298SRandall Stewart 	SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer);
4380139bc87fSRandall Stewart 
4381f8829a4aSRandall Stewart 	LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist);
4382f8829a4aSRandall Stewart 	/* now file the port under the hash as well */
4383f8829a4aSRandall Stewart 	if (inp->sctp_tcbhash != NULL) {
4384f8829a4aSRandall Stewart 		head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport,
4385f8829a4aSRandall Stewart 		    inp->sctp_hashmark)];
4386f8829a4aSRandall Stewart 		LIST_INSERT_HEAD(head, stcb, sctp_tcbhash);
4387f8829a4aSRandall Stewart 	}
43888a956abeSMichael Tuexen 	if (initialize_auth_params == SCTP_INITIALIZE_AUTH_PARAMS) {
43898a956abeSMichael Tuexen 		sctp_initialize_auth_params(inp, stcb);
43908a956abeSMichael Tuexen 	}
4391f8829a4aSRandall Stewart 	SCTP_INP_WUNLOCK(inp);
4392dd294dceSMichael Tuexen 	SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", (void *)stcb);
4393f8829a4aSRandall Stewart 	return (stcb);
4394f8829a4aSRandall Stewart }
4395f8829a4aSRandall Stewart 
4396f8829a4aSRandall Stewart void
4397f8829a4aSRandall Stewart sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
4398f8829a4aSRandall Stewart {
43996a34ec63SMichael Tuexen 	struct sctp_inpcb *inp;
4400f8829a4aSRandall Stewart 	struct sctp_association *asoc;
4401f8829a4aSRandall Stewart 
44026a34ec63SMichael Tuexen 	inp = stcb->sctp_ep;
4403f8829a4aSRandall Stewart 	asoc = &stcb->asoc;
4404f8829a4aSRandall Stewart 	asoc->numnets--;
4405f8829a4aSRandall Stewart 	TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4406f8829a4aSRandall Stewart 	if (net == asoc->primary_destination) {
4407f8829a4aSRandall Stewart 		/* Reset primary */
4408f8829a4aSRandall Stewart 		struct sctp_nets *lnet;
4409f8829a4aSRandall Stewart 
4410f8829a4aSRandall Stewart 		lnet = TAILQ_FIRST(&asoc->nets);
4411851b7298SRandall Stewart 		/*
4412851b7298SRandall Stewart 		 * Mobility adaptation Ideally, if deleted destination is
4413851b7298SRandall Stewart 		 * the primary, it becomes a fast retransmission trigger by
4414851b7298SRandall Stewart 		 * the subsequent SET PRIMARY. (by micchie)
4415851b7298SRandall Stewart 		 */
4416851b7298SRandall Stewart 		if (sctp_is_mobility_feature_on(stcb->sctp_ep,
4417b201f536SRandall Stewart 		    SCTP_MOBILITY_BASE) ||
4418b201f536SRandall Stewart 		    sctp_is_mobility_feature_on(stcb->sctp_ep,
4419851b7298SRandall Stewart 		    SCTP_MOBILITY_FASTHANDOFF)) {
4420851b7298SRandall Stewart 			SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n");
4421851b7298SRandall Stewart 			if (asoc->deleted_primary != NULL) {
4422851b7298SRandall Stewart 				SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n");
4423c54a18d2SRandall Stewart 				goto out;
4424851b7298SRandall Stewart 			}
4425851b7298SRandall Stewart 			asoc->deleted_primary = net;
4426851b7298SRandall Stewart 			atomic_add_int(&net->ref_count, 1);
4427d55b0b1bSRandall Stewart 			memset(&net->lastsa, 0, sizeof(net->lastsa));
4428d55b0b1bSRandall Stewart 			memset(&net->lastsv, 0, sizeof(net->lastsv));
4429851b7298SRandall Stewart 			sctp_mobility_feature_on(stcb->sctp_ep,
4430851b7298SRandall Stewart 			    SCTP_MOBILITY_PRIM_DELETED);
4431851b7298SRandall Stewart 			sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED,
4432851b7298SRandall Stewart 			    stcb->sctp_ep, stcb, NULL);
4433851b7298SRandall Stewart 		}
4434c54a18d2SRandall Stewart out:
4435f8829a4aSRandall Stewart 		/* Try to find a confirmed primary */
443642551e99SRandall Stewart 		asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0);
4437f8829a4aSRandall Stewart 	}
4438f8829a4aSRandall Stewart 	if (net == asoc->last_data_chunk_from) {
4439f8829a4aSRandall Stewart 		/* Reset primary */
4440f8829a4aSRandall Stewart 		asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets);
4441f8829a4aSRandall Stewart 	}
4442f8829a4aSRandall Stewart 	if (net == asoc->last_control_chunk_from) {
4443f8829a4aSRandall Stewart 		/* Clear net */
4444f8829a4aSRandall Stewart 		asoc->last_control_chunk_from = NULL;
4445f8829a4aSRandall Stewart 	}
44465ac83902SMichael Tuexen 	if (net == asoc->last_net_cmt_send_started) {
44475ac83902SMichael Tuexen 		/* Clear net */
44485ac83902SMichael Tuexen 		asoc->last_net_cmt_send_started = NULL;
44495ac83902SMichael Tuexen 	}
4450ca85e948SMichael Tuexen 	if (net == stcb->asoc.alternate) {
4451ca85e948SMichael Tuexen 		sctp_free_remote_addr(stcb->asoc.alternate);
4452ca85e948SMichael Tuexen 		stcb->asoc.alternate = NULL;
4453ca85e948SMichael Tuexen 	}
44546a34ec63SMichael Tuexen 	sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
44556a34ec63SMichael Tuexen 	    SCTP_FROM_SCTP_PCB + SCTP_LOC_9);
44566a34ec63SMichael Tuexen 	sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net,
44576a34ec63SMichael Tuexen 	    SCTP_FROM_SCTP_PCB + SCTP_LOC_10);
44589803f01cSMichael Tuexen 	net->dest_state |= SCTP_ADDR_BEING_DELETED;
445942551e99SRandall Stewart 	sctp_free_remote_addr(net);
4460f8829a4aSRandall Stewart }
4461f8829a4aSRandall Stewart 
4462f8829a4aSRandall Stewart /*
4463f8829a4aSRandall Stewart  * remove a remote endpoint address from an association, it will fail if the
4464f8829a4aSRandall Stewart  * address does not exist.
4465f8829a4aSRandall Stewart  */
4466f8829a4aSRandall Stewart int
4467f8829a4aSRandall Stewart sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
4468f8829a4aSRandall Stewart {
4469f8829a4aSRandall Stewart 	/*
4470f8829a4aSRandall Stewart 	 * Here we need to remove a remote address. This is quite simple, we
4471f8829a4aSRandall Stewart 	 * first find it in the list of address for the association
4472f8829a4aSRandall Stewart 	 * (tasoc->asoc.nets) and then if it is there, we do a LIST_REMOVE
4473f8829a4aSRandall Stewart 	 * on that item. Note we do not allow it to be removed if there are
4474f8829a4aSRandall Stewart 	 * no other addresses.
4475f8829a4aSRandall Stewart 	 */
4476f8829a4aSRandall Stewart 	struct sctp_association *asoc;
44774a9ef3f8SMichael Tuexen 	struct sctp_nets *net, *nnet;
4478f8829a4aSRandall Stewart 
4479f8829a4aSRandall Stewart 	asoc = &stcb->asoc;
4480f8829a4aSRandall Stewart 
4481f8829a4aSRandall Stewart 	/* locate the address */
44824a9ef3f8SMichael Tuexen 	TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
4483f8829a4aSRandall Stewart 		if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) {
4484f8829a4aSRandall Stewart 			continue;
4485f8829a4aSRandall Stewart 		}
4486f8829a4aSRandall Stewart 		if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr,
4487f8829a4aSRandall Stewart 		    remaddr)) {
4488f8829a4aSRandall Stewart 			/* we found the guy */
4489f8829a4aSRandall Stewart 			if (asoc->numnets < 2) {
4490f8829a4aSRandall Stewart 				/* Must have at LEAST two remote addresses */
4491f8829a4aSRandall Stewart 				return (-1);
4492f8829a4aSRandall Stewart 			} else {
4493f8829a4aSRandall Stewart 				sctp_remove_net(stcb, net);
4494f8829a4aSRandall Stewart 				return (0);
4495f8829a4aSRandall Stewart 			}
4496f8829a4aSRandall Stewart 		}
4497f8829a4aSRandall Stewart 	}
4498f8829a4aSRandall Stewart 	/* not found. */
4499f8829a4aSRandall Stewart 	return (-2);
4500f8829a4aSRandall Stewart }
4501f8829a4aSRandall Stewart 
4502851b7298SRandall Stewart void
4503830d754dSRandall Stewart sctp_delete_from_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4504851b7298SRandall Stewart {
4505851b7298SRandall Stewart 	struct sctpvtaghead *chain;
4506851b7298SRandall Stewart 	struct sctp_tagblock *twait_block;
4507851b7298SRandall Stewart 	int found = 0;
4508851b7298SRandall Stewart 	int i;
4509851b7298SRandall Stewart 
4510b3f1ea41SRandall Stewart 	chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4511851b7298SRandall Stewart 	LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4512851b7298SRandall Stewart 		for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4513830d754dSRandall Stewart 			if ((twait_block->vtag_block[i].v_tag == tag) &&
4514830d754dSRandall Stewart 			    (twait_block->vtag_block[i].lport == lport) &&
4515830d754dSRandall Stewart 			    (twait_block->vtag_block[i].rport == rport)) {
4516851b7298SRandall Stewart 				twait_block->vtag_block[i].tv_sec_at_expire = 0;
4517851b7298SRandall Stewart 				twait_block->vtag_block[i].v_tag = 0;
4518830d754dSRandall Stewart 				twait_block->vtag_block[i].lport = 0;
4519830d754dSRandall Stewart 				twait_block->vtag_block[i].rport = 0;
4520851b7298SRandall Stewart 				found = 1;
4521851b7298SRandall Stewart 				break;
4522851b7298SRandall Stewart 			}
4523851b7298SRandall Stewart 		}
4524851b7298SRandall Stewart 		if (found)
4525851b7298SRandall Stewart 			break;
4526851b7298SRandall Stewart 	}
4527851b7298SRandall Stewart }
4528f8829a4aSRandall Stewart 
4529fb8fb8f8SRandall Stewart int
4530830d754dSRandall Stewart sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4531fb8fb8f8SRandall Stewart {
4532fb8fb8f8SRandall Stewart 	struct sctpvtaghead *chain;
4533fb8fb8f8SRandall Stewart 	struct sctp_tagblock *twait_block;
4534fb8fb8f8SRandall Stewart 	int found = 0;
4535fb8fb8f8SRandall Stewart 	int i;
4536fb8fb8f8SRandall Stewart 
4537a1e13272SRandall Stewart 	SCTP_INP_INFO_WLOCK();
4538b3f1ea41SRandall Stewart 	chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4539fb8fb8f8SRandall Stewart 	LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4540fb8fb8f8SRandall Stewart 		for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4541830d754dSRandall Stewart 			if ((twait_block->vtag_block[i].v_tag == tag) &&
4542830d754dSRandall Stewart 			    (twait_block->vtag_block[i].lport == lport) &&
4543830d754dSRandall Stewart 			    (twait_block->vtag_block[i].rport == rport)) {
4544fb8fb8f8SRandall Stewart 				found = 1;
4545fb8fb8f8SRandall Stewart 				break;
4546fb8fb8f8SRandall Stewart 			}
4547fb8fb8f8SRandall Stewart 		}
4548fb8fb8f8SRandall Stewart 		if (found)
4549fb8fb8f8SRandall Stewart 			break;
4550fb8fb8f8SRandall Stewart 	}
4551a1e13272SRandall Stewart 	SCTP_INP_INFO_WUNLOCK();
4552fb8fb8f8SRandall Stewart 	return (found);
4553fb8fb8f8SRandall Stewart }
4554fb8fb8f8SRandall Stewart 
455544b7479bSRandall Stewart void
4556830d754dSRandall Stewart sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport)
4557f8829a4aSRandall Stewart {
4558f8829a4aSRandall Stewart 	struct sctpvtaghead *chain;
4559f8829a4aSRandall Stewart 	struct sctp_tagblock *twait_block;
4560f8829a4aSRandall Stewart 	struct timeval now;
4561f8829a4aSRandall Stewart 	int set, i;
4562f8829a4aSRandall Stewart 
4563a16ccdceSRandall Stewart 	if (time == 0) {
4564a16ccdceSRandall Stewart 		/* Its disabled */
4565a16ccdceSRandall Stewart 		return;
4566a16ccdceSRandall Stewart 	}
45676e55db54SRandall Stewart 	(void)SCTP_GETTIME_TIMEVAL(&now);
4568b3f1ea41SRandall Stewart 	chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4569f8829a4aSRandall Stewart 	set = 0;
4570f8829a4aSRandall Stewart 	LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
457156f778aaSMichael Tuexen 		/* Block(s) present, lets find space, and expire on the fly */
4572f8829a4aSRandall Stewart 		for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4573f8829a4aSRandall Stewart 			if ((twait_block->vtag_block[i].v_tag == 0) &&
4574f8829a4aSRandall Stewart 			    !set) {
4575f8829a4aSRandall Stewart 				twait_block->vtag_block[i].tv_sec_at_expire =
457644b7479bSRandall Stewart 				    now.tv_sec + time;
4577f8829a4aSRandall Stewart 				twait_block->vtag_block[i].v_tag = tag;
4578830d754dSRandall Stewart 				twait_block->vtag_block[i].lport = lport;
4579830d754dSRandall Stewart 				twait_block->vtag_block[i].rport = rport;
4580f8829a4aSRandall Stewart 				set = 1;
4581f8829a4aSRandall Stewart 			} else if ((twait_block->vtag_block[i].v_tag) &&
4582fb8fb8f8SRandall Stewart 			    ((long)twait_block->vtag_block[i].tv_sec_at_expire < now.tv_sec)) {
4583f8829a4aSRandall Stewart 				/* Audit expires this guy */
4584f8829a4aSRandall Stewart 				twait_block->vtag_block[i].tv_sec_at_expire = 0;
4585f8829a4aSRandall Stewart 				twait_block->vtag_block[i].v_tag = 0;
4586830d754dSRandall Stewart 				twait_block->vtag_block[i].lport = 0;
4587830d754dSRandall Stewart 				twait_block->vtag_block[i].rport = 0;
4588f8829a4aSRandall Stewart 				if (set == 0) {
4589f8829a4aSRandall Stewart 					/* Reuse it for my new tag */
4590a1e13272SRandall Stewart 					twait_block->vtag_block[i].tv_sec_at_expire = now.tv_sec + time;
4591a1e13272SRandall Stewart 					twait_block->vtag_block[i].v_tag = tag;
4592830d754dSRandall Stewart 					twait_block->vtag_block[i].lport = lport;
4593830d754dSRandall Stewart 					twait_block->vtag_block[i].rport = rport;
4594f8829a4aSRandall Stewart 					set = 1;
4595f8829a4aSRandall Stewart 				}
4596f8829a4aSRandall Stewart 			}
4597f8829a4aSRandall Stewart 		}
4598f8829a4aSRandall Stewart 		if (set) {
4599f8829a4aSRandall Stewart 			/*
460056f778aaSMichael Tuexen 			 * We only do up to the block where we can place our
460156f778aaSMichael Tuexen 			 * tag for audits
4602f8829a4aSRandall Stewart 			 */
4603f8829a4aSRandall Stewart 			break;
4604f8829a4aSRandall Stewart 		}
4605f8829a4aSRandall Stewart 	}
4606f8829a4aSRandall Stewart 	/* Need to add a new block to chain */
4607f8829a4aSRandall Stewart 	if (!set) {
4608f8829a4aSRandall Stewart 		SCTP_MALLOC(twait_block, struct sctp_tagblock *,
4609207304d4SRandall Stewart 		    sizeof(struct sctp_tagblock), SCTP_M_TIMW);
4610f8829a4aSRandall Stewart 		if (twait_block == NULL) {
4611f8829a4aSRandall Stewart 			return;
4612f8829a4aSRandall Stewart 		}
461344b7479bSRandall Stewart 		memset(twait_block, 0, sizeof(struct sctp_tagblock));
4614f8829a4aSRandall Stewart 		LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock);
4615fb8fb8f8SRandall Stewart 		twait_block->vtag_block[0].tv_sec_at_expire = now.tv_sec + time;
4616f8829a4aSRandall Stewart 		twait_block->vtag_block[0].v_tag = tag;
4617830d754dSRandall Stewart 		twait_block->vtag_block[0].lport = lport;
4618830d754dSRandall Stewart 		twait_block->vtag_block[0].rport = rport;
4619f8829a4aSRandall Stewart 	}
4620f8829a4aSRandall Stewart }
4621f8829a4aSRandall Stewart 
462244249214SRandall Stewart void
462344249214SRandall Stewart sctp_clean_up_stream(struct sctp_tcb *stcb, struct sctp_readhead *rh)
462444249214SRandall Stewart {
462544249214SRandall Stewart 	struct sctp_tmit_chunk *chk, *nchk;
462628cd0699SMichael Tuexen 	struct sctp_queued_to_read *control, *ncontrol;
462744249214SRandall Stewart 
462828cd0699SMichael Tuexen 	TAILQ_FOREACH_SAFE(control, rh, next_instrm, ncontrol) {
462928cd0699SMichael Tuexen 		TAILQ_REMOVE(rh, control, next_instrm);
463028cd0699SMichael Tuexen 		control->on_strm_q = 0;
463128cd0699SMichael Tuexen 		if (control->on_read_q == 0) {
463228cd0699SMichael Tuexen 			sctp_free_remote_addr(control->whoFrom);
463328cd0699SMichael Tuexen 			if (control->data) {
463428cd0699SMichael Tuexen 				sctp_m_freem(control->data);
463528cd0699SMichael Tuexen 				control->data = NULL;
463644249214SRandall Stewart 			}
463744249214SRandall Stewart 		}
463844249214SRandall Stewart 		/* Reassembly free? */
463928cd0699SMichael Tuexen 		TAILQ_FOREACH_SAFE(chk, &control->reasm, sctp_next, nchk) {
464028cd0699SMichael Tuexen 			TAILQ_REMOVE(&control->reasm, chk, sctp_next);
464144249214SRandall Stewart 			if (chk->data) {
464244249214SRandall Stewart 				sctp_m_freem(chk->data);
464344249214SRandall Stewart 				chk->data = NULL;
464444249214SRandall Stewart 			}
464544249214SRandall Stewart 			if (chk->holds_key_ref)
464644249214SRandall Stewart 				sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
464744249214SRandall Stewart 			sctp_free_remote_addr(chk->whoTo);
464844249214SRandall Stewart 			SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
464944249214SRandall Stewart 			SCTP_DECR_CHK_COUNT();
465044249214SRandall Stewart 			/* sa_ignore FREED_MEMORY */
465144249214SRandall Stewart 		}
465244249214SRandall Stewart 		/*
465344249214SRandall Stewart 		 * We don't free the address here since all the net's were
465444249214SRandall Stewart 		 * freed above.
465544249214SRandall Stewart 		 */
465628cd0699SMichael Tuexen 		if (control->on_read_q == 0) {
465728cd0699SMichael Tuexen 			sctp_free_a_readq(stcb, control);
465844249214SRandall Stewart 		}
465944249214SRandall Stewart 	}
466044249214SRandall Stewart }
4661f8829a4aSRandall Stewart 
4662c4739e2fSRandall Stewart /*-
4663c4739e2fSRandall Stewart  * Free the association after un-hashing the remote port. This
4664c4739e2fSRandall Stewart  * function ALWAYS returns holding NO LOCK on the stcb. It DOES
4665c4739e2fSRandall Stewart  * expect that the input to this function IS a locked TCB.
4666c4739e2fSRandall Stewart  * It will return 0, if it did NOT destroy the association (instead
4667c4739e2fSRandall Stewart  * it unlocks it. It will return NON-zero if it either destroyed the
4668c4739e2fSRandall Stewart  * association OR the association is already destroyed.
4669f8829a4aSRandall Stewart  */
4670f8829a4aSRandall Stewart int
4671a5d547adSRandall Stewart sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
4672f8829a4aSRandall Stewart {
4673f8829a4aSRandall Stewart 	int i;
4674f8829a4aSRandall Stewart 	struct sctp_association *asoc;
46754a9ef3f8SMichael Tuexen 	struct sctp_nets *net, *nnet;
46764a9ef3f8SMichael Tuexen 	struct sctp_laddr *laddr, *naddr;
46774a9ef3f8SMichael Tuexen 	struct sctp_tmit_chunk *chk, *nchk;
46784a9ef3f8SMichael Tuexen 	struct sctp_asconf_addr *aparam, *naparam;
46794a9ef3f8SMichael Tuexen 	struct sctp_asconf_ack *aack, *naack;
46804a9ef3f8SMichael Tuexen 	struct sctp_stream_reset_list *strrst, *nstrrst;
46814a9ef3f8SMichael Tuexen 	struct sctp_queued_to_read *sq, *nsq;
46824a9ef3f8SMichael Tuexen 	struct sctp_stream_queue_pending *sp, *nsp;
46834a9ef3f8SMichael Tuexen 	sctp_sharedkey_t *shared_key, *nshared_key;
4684f8829a4aSRandall Stewart 	struct socket *so;
4685f8829a4aSRandall Stewart 
4686f8829a4aSRandall Stewart 	/* first, lets purge the entry from the hash table. */
4687f8829a4aSRandall Stewart 
4688f8829a4aSRandall Stewart #ifdef SCTP_LOG_CLOSING
4689f8829a4aSRandall Stewart 	sctp_log_closing(inp, stcb, 6);
4690f8829a4aSRandall Stewart #endif
4691f8829a4aSRandall Stewart 	if (stcb->asoc.state == 0) {
4692f8829a4aSRandall Stewart #ifdef SCTP_LOG_CLOSING
4693f8829a4aSRandall Stewart 		sctp_log_closing(inp, NULL, 7);
4694f8829a4aSRandall Stewart #endif
4695f8829a4aSRandall Stewart 		/* there is no asoc, really TSNH :-0 */
4696f8829a4aSRandall Stewart 		return (1);
4697f8829a4aSRandall Stewart 	}
4698f5d30f7fSMichael Tuexen 	SCTP_TCB_SEND_LOCK(stcb);
4699ca85e948SMichael Tuexen 	if (stcb->asoc.alternate) {
4700ca85e948SMichael Tuexen 		sctp_free_remote_addr(stcb->asoc.alternate);
4701ca85e948SMichael Tuexen 		stcb->asoc.alternate = NULL;
4702ca85e948SMichael Tuexen 	}
4703a5d547adSRandall Stewart 	/* TEMP CODE */
4704a5d547adSRandall Stewart 	if (stcb->freed_from_where == 0) {
4705a5d547adSRandall Stewart 		/* Only record the first place free happened from */
4706a5d547adSRandall Stewart 		stcb->freed_from_where = from_location;
4707a5d547adSRandall Stewart 	}
4708a5d547adSRandall Stewart 	/* TEMP CODE */
4709a5d547adSRandall Stewart 
4710f8829a4aSRandall Stewart 	asoc = &stcb->asoc;
4711f8829a4aSRandall Stewart 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4712f8829a4aSRandall Stewart 	    (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4713f8829a4aSRandall Stewart 		/* nothing around */
4714f8829a4aSRandall Stewart 		so = NULL;
4715f8829a4aSRandall Stewart 	else
4716f8829a4aSRandall Stewart 		so = inp->sctp_socket;
4717f8829a4aSRandall Stewart 
4718f8829a4aSRandall Stewart 	/*
4719f8829a4aSRandall Stewart 	 * We used timer based freeing if a reader or writer is in the way.
4720f8829a4aSRandall Stewart 	 * So we first check if we are actually being called from a timer,
4721f8829a4aSRandall Stewart 	 * if so we abort early if a reader or writer is still in the way.
4722f8829a4aSRandall Stewart 	 */
4723f8829a4aSRandall Stewart 	if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
4724a5d547adSRandall Stewart 	    (from_inpcbfree == SCTP_NORMAL_PROC)) {
4725f8829a4aSRandall Stewart 		/*
4726f8829a4aSRandall Stewart 		 * is it the timer driving us? if so are the reader/writers
4727f8829a4aSRandall Stewart 		 * gone?
4728f8829a4aSRandall Stewart 		 */
4729f8829a4aSRandall Stewart 		if (stcb->asoc.refcnt) {
4730f8829a4aSRandall Stewart 			/* nope, reader or writer in the way */
4731f8829a4aSRandall Stewart 			sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4732f8829a4aSRandall Stewart 			/* no asoc destroyed */
4733f5d30f7fSMichael Tuexen 			SCTP_TCB_SEND_UNLOCK(stcb);
4734f8829a4aSRandall Stewart 			SCTP_TCB_UNLOCK(stcb);
4735f8829a4aSRandall Stewart #ifdef SCTP_LOG_CLOSING
4736f8829a4aSRandall Stewart 			sctp_log_closing(inp, stcb, 8);
4737f8829a4aSRandall Stewart #endif
4738f8829a4aSRandall Stewart 			return (0);
4739f8829a4aSRandall Stewart 		}
4740f8829a4aSRandall Stewart 	}
47415555400aSMichael Tuexen 	/* Now clean up any other timers */
47428803350dSMichael Tuexen 	sctp_stop_association_timers(stcb, false);
4743f4ad963cSRandall Stewart 	/* Now the read queue needs to be cleaned up (only once) */
4744f4ad963cSRandall Stewart 	if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) {
4745839d21d6SMichael Tuexen 		SCTP_ADD_SUBSTATE(stcb, SCTP_STATE_ABOUT_TO_BE_FREED);
4746f8829a4aSRandall Stewart 		SCTP_INP_READ_LOCK(inp);
4747f8829a4aSRandall Stewart 		TAILQ_FOREACH(sq, &inp->read_queue, next) {
4748f8829a4aSRandall Stewart 			if (sq->stcb == stcb) {
4749f8829a4aSRandall Stewart 				sq->do_not_ref_stcb = 1;
4750f8829a4aSRandall Stewart 				sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
4751f8829a4aSRandall Stewart 				/*
475203b0b021SRandall Stewart 				 * If there is no end, there never will be
475303b0b021SRandall Stewart 				 * now.
4754f8829a4aSRandall Stewart 				 */
475503b0b021SRandall Stewart 				if (sq->end_added == 0) {
475603b0b021SRandall Stewart 					/* Held for PD-API clear that. */
475703b0b021SRandall Stewart 					sq->pdapi_aborted = 1;
4758f8829a4aSRandall Stewart 					sq->held_length = 0;
4759e2e7c62eSMichael Tuexen 					if (sctp_stcb_is_feature_on(inp, stcb, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) {
4760f8829a4aSRandall Stewart 						/*
476103b0b021SRandall Stewart 						 * Need to add a PD-API
476203b0b021SRandall Stewart 						 * aborted indication.
476303b0b021SRandall Stewart 						 * Setting the control_pdapi
476403b0b021SRandall Stewart 						 * assures that it will be
476503b0b021SRandall Stewart 						 * added right after this
476603b0b021SRandall Stewart 						 * msg.
4767f8829a4aSRandall Stewart 						 */
47689a6142d8SRandall Stewart 						uint32_t strseq;
47699a6142d8SRandall Stewart 
4770f8829a4aSRandall Stewart 						stcb->asoc.control_pdapi = sq;
477149656eefSMichael Tuexen 						strseq = (sq->sinfo_stream << 16) | (sq->mid & 0x0000ffff);
4772810ec536SMichael Tuexen 						sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION,
4773810ec536SMichael Tuexen 						    stcb,
4774810ec536SMichael Tuexen 						    SCTP_PARTIAL_DELIVERY_ABORTED,
4775810ec536SMichael Tuexen 						    (void *)&strseq,
4776810ec536SMichael Tuexen 						    SCTP_SO_LOCKED);
4777f8829a4aSRandall Stewart 						stcb->asoc.control_pdapi = NULL;
4778f8829a4aSRandall Stewart 					}
4779f8829a4aSRandall Stewart 				}
478003b0b021SRandall Stewart 				/* Add an end to wake them */
4781f8829a4aSRandall Stewart 				sq->end_added = 1;
4782f8829a4aSRandall Stewart 			}
4783f8829a4aSRandall Stewart 		}
4784f8829a4aSRandall Stewart 		SCTP_INP_READ_UNLOCK(inp);
4785f8829a4aSRandall Stewart 		if (stcb->block_entry) {
4786c4739e2fSRandall Stewart 			SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET);
4787f8829a4aSRandall Stewart 			stcb->block_entry->error = ECONNRESET;
4788f8829a4aSRandall Stewart 			stcb->block_entry = NULL;
4789f8829a4aSRandall Stewart 		}
4790f4ad963cSRandall Stewart 	}
479188a7eb29SRandall Stewart 	if ((stcb->asoc.refcnt) || (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE)) {
4792f4ad963cSRandall Stewart 		/*
479388a7eb29SRandall Stewart 		 * Someone holds a reference OR the socket is unaccepted
479488a7eb29SRandall Stewart 		 * yet.
4795f4ad963cSRandall Stewart 		 */
479662fb761fSRandall Stewart 		if ((stcb->asoc.refcnt) ||
479762fb761fSRandall Stewart 		    (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
479862fb761fSRandall Stewart 		    (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4799839d21d6SMichael Tuexen 			SCTP_CLEAR_SUBSTATE(stcb, SCTP_STATE_IN_ACCEPT_QUEUE);
4800a5d547adSRandall Stewart 			sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
480162fb761fSRandall Stewart 		}
4802f5d30f7fSMichael Tuexen 		SCTP_TCB_SEND_UNLOCK(stcb);
4803a5d547adSRandall Stewart 		SCTP_TCB_UNLOCK(stcb);
4804a5d547adSRandall Stewart 		if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4805a5d547adSRandall Stewart 		    (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4806a5d547adSRandall Stewart 			/* nothing around */
4807a5d547adSRandall Stewart 			so = NULL;
4808f4ad963cSRandall Stewart 		if (so) {
4809f4ad963cSRandall Stewart 			/* Wake any reader/writers */
4810f4ad963cSRandall Stewart 			sctp_sorwakeup(inp, so);
4811f4ad963cSRandall Stewart 			sctp_sowwakeup(inp, so);
4812f4ad963cSRandall Stewart 		}
48130053ed28SMichael Tuexen 
4814f4ad963cSRandall Stewart #ifdef SCTP_LOG_CLOSING
4815f4ad963cSRandall Stewart 		sctp_log_closing(inp, stcb, 9);
4816f4ad963cSRandall Stewart #endif
4817f4ad963cSRandall Stewart 		/* no asoc destroyed */
4818f4ad963cSRandall Stewart 		return (0);
4819f4ad963cSRandall Stewart 	}
4820f4ad963cSRandall Stewart #ifdef SCTP_LOG_CLOSING
4821f4ad963cSRandall Stewart 	sctp_log_closing(inp, stcb, 10);
4822f4ad963cSRandall Stewart #endif
4823a5d547adSRandall Stewart 	/*
4824a5d547adSRandall Stewart 	 * When I reach here, no others want to kill the assoc yet.. and I
4825a5d547adSRandall Stewart 	 * own the lock. Now its possible an abort comes in when I do the
4826a5d547adSRandall Stewart 	 * lock exchange below to grab all the locks to do the final take
4827a5d547adSRandall Stewart 	 * out. to prevent this we increment the count, which will start a
4828a5d547adSRandall Stewart 	 * timer and blow out above thus assuring us that we hold exclusive
4829a5d547adSRandall Stewart 	 * killing of the asoc. Note that after getting back the TCB lock we
4830a5d547adSRandall Stewart 	 * will go ahead and increment the counter back up and stop any
4831a5d547adSRandall Stewart 	 * timer a passing stranger may have started :-S
4832a5d547adSRandall Stewart 	 */
4833a5d547adSRandall Stewart 	if (from_inpcbfree == SCTP_NORMAL_PROC) {
4834a5d547adSRandall Stewart 		atomic_add_int(&stcb->asoc.refcnt, 1);
4835a5d547adSRandall Stewart 
4836f5d30f7fSMichael Tuexen 		SCTP_TCB_SEND_UNLOCK(stcb);
4837a5d547adSRandall Stewart 		SCTP_TCB_UNLOCK(stcb);
4838a5d547adSRandall Stewart 		SCTP_INP_INFO_WLOCK();
4839a5d547adSRandall Stewart 		SCTP_INP_WLOCK(inp);
4840a5d547adSRandall Stewart 		SCTP_TCB_LOCK(stcb);
4841f5d30f7fSMichael Tuexen 		SCTP_TCB_SEND_LOCK(stcb);
4842f8829a4aSRandall Stewart 	}
4843a5d547adSRandall Stewart 	/* Double check the GONE flag */
4844a5d547adSRandall Stewart 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4845a5d547adSRandall Stewart 	    (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4846a5d547adSRandall Stewart 		/* nothing around */
4847a5d547adSRandall Stewart 		so = NULL;
4848a5d547adSRandall Stewart 
484924187cfeSMichael Tuexen 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
485024187cfeSMichael Tuexen 	    (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
485124187cfeSMichael Tuexen 		/*
485224187cfeSMichael Tuexen 		 * For TCP type we need special handling when we are
485324187cfeSMichael Tuexen 		 * connected. We also include the peel'ed off ones to.
485424187cfeSMichael Tuexen 		 */
485524187cfeSMichael Tuexen 		if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
485624187cfeSMichael Tuexen 			inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED;
485724187cfeSMichael Tuexen 			inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED;
485824187cfeSMichael Tuexen 			if (so) {
485924187cfeSMichael Tuexen 				SOCKBUF_LOCK(&so->so_rcv);
486024187cfeSMichael Tuexen 				so->so_state &= ~(SS_ISCONNECTING |
486124187cfeSMichael Tuexen 				    SS_ISDISCONNECTING |
486224187cfeSMichael Tuexen 				    SS_ISCONFIRMING |
486324187cfeSMichael Tuexen 				    SS_ISCONNECTED);
486424187cfeSMichael Tuexen 				so->so_state |= SS_ISDISCONNECTED;
486524187cfeSMichael Tuexen 				socantrcvmore_locked(so);
486624187cfeSMichael Tuexen 				socantsendmore(so);
486724187cfeSMichael Tuexen 				sctp_sowwakeup(inp, so);
486824187cfeSMichael Tuexen 				sctp_sorwakeup(inp, so);
486924187cfeSMichael Tuexen 				SCTP_SOWAKEUP(so);
487024187cfeSMichael Tuexen 			}
487124187cfeSMichael Tuexen 		}
487224187cfeSMichael Tuexen 	}
487324187cfeSMichael Tuexen 
4874f8829a4aSRandall Stewart 	/*
4875f8829a4aSRandall Stewart 	 * Make it invalid too, that way if its about to run it will abort
4876f8829a4aSRandall Stewart 	 * and return.
4877f8829a4aSRandall Stewart 	 */
4878f8829a4aSRandall Stewart 	/* re-increment the lock */
4879a5d547adSRandall Stewart 	if (from_inpcbfree == SCTP_NORMAL_PROC) {
488050cec919SRandall Stewart 		atomic_add_int(&stcb->asoc.refcnt, -1);
4881f8829a4aSRandall Stewart 	}
4882fc066a61SMichael Tuexen 	if (stcb->asoc.refcnt) {
4883839d21d6SMichael Tuexen 		SCTP_CLEAR_SUBSTATE(stcb, SCTP_STATE_IN_ACCEPT_QUEUE);
4884fc066a61SMichael Tuexen 		sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4885fc066a61SMichael Tuexen 		if (from_inpcbfree == SCTP_NORMAL_PROC) {
4886fc066a61SMichael Tuexen 			SCTP_INP_INFO_WUNLOCK();
4887fc066a61SMichael Tuexen 			SCTP_INP_WUNLOCK(inp);
4888fc066a61SMichael Tuexen 		}
4889f5d30f7fSMichael Tuexen 		SCTP_TCB_SEND_UNLOCK(stcb);
4890fc066a61SMichael Tuexen 		SCTP_TCB_UNLOCK(stcb);
4891fc066a61SMichael Tuexen 		return (0);
4892fc066a61SMichael Tuexen 	}
4893f8829a4aSRandall Stewart 	asoc->state = 0;
4894f8829a4aSRandall Stewart 	if (inp->sctp_tcbhash) {
4895f8829a4aSRandall Stewart 		LIST_REMOVE(stcb, sctp_tcbhash);
4896f8829a4aSRandall Stewart 	}
4897830d754dSRandall Stewart 	if (stcb->asoc.in_asocid_hash) {
4898830d754dSRandall Stewart 		LIST_REMOVE(stcb, sctp_tcbasocidhash);
4899f8829a4aSRandall Stewart 	}
4900f8829a4aSRandall Stewart 	/* Now lets remove it from the list of ALL associations in the EP */
4901f8829a4aSRandall Stewart 	LIST_REMOVE(stcb, sctp_tcblist);
4902a5d547adSRandall Stewart 	if (from_inpcbfree == SCTP_NORMAL_PROC) {
4903f8829a4aSRandall Stewart 		SCTP_INP_INCR_REF(inp);
4904f8829a4aSRandall Stewart 		SCTP_INP_WUNLOCK(inp);
4905f8829a4aSRandall Stewart 	}
4906f8829a4aSRandall Stewart 	/* pull from vtag hash */
4907f8829a4aSRandall Stewart 	LIST_REMOVE(stcb, sctp_asocs);
4908a16ccdceSRandall Stewart 	sctp_add_vtag_to_timewait(asoc->my_vtag, SCTP_BASE_SYSCTL(sctp_vtag_time_wait),
4909a16ccdceSRandall Stewart 	    inp->sctp_lport, stcb->rport);
4910f8829a4aSRandall Stewart 
491144b7479bSRandall Stewart 	/*
4912b5c16493SMichael Tuexen 	 * Now restop the timers to be sure this is paranoia at is finest!
491344b7479bSRandall Stewart 	 */
49148803350dSMichael Tuexen 	sctp_stop_association_timers(stcb, true);
491544b7479bSRandall Stewart 
4916f8829a4aSRandall Stewart 	/*
4917f8829a4aSRandall Stewart 	 * The chunk lists and such SHOULD be empty but we check them just
4918f8829a4aSRandall Stewart 	 * in case.
4919f8829a4aSRandall Stewart 	 */
4920f8829a4aSRandall Stewart 	/* anything on the wheel needs to be removed */
4921f8829a4aSRandall Stewart 	for (i = 0; i < asoc->streamoutcnt; i++) {
4922f8829a4aSRandall Stewart 		struct sctp_stream_out *outs;
4923f8829a4aSRandall Stewart 
4924f8829a4aSRandall Stewart 		outs = &asoc->strmout[i];
4925f8829a4aSRandall Stewart 		/* now clean up any chunks here */
49264a9ef3f8SMichael Tuexen 		TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
49274d58b0c3SMichael Tuexen 			atomic_subtract_int(&asoc->stream_queue_cnt, 1);
4928f8829a4aSRandall Stewart 			TAILQ_REMOVE(&outs->outqueue, sp, next);
4929689ed089SMichael Tuexen 			stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, outs, sp, 1);
4930d07b2ac6SMichael Tuexen 			sctp_free_spbufspace(stcb, asoc, sp);
4931f8829a4aSRandall Stewart 			if (sp->data) {
49328db924deSRandall Stewart 				if (so) {
49338db924deSRandall Stewart 					/* Still an open socket - report */
49348db924deSRandall Stewart 					sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
49351edc9dbaSMichael Tuexen 					    0, (void *)sp, SCTP_SO_LOCKED);
49368db924deSRandall Stewart 				}
49378db924deSRandall Stewart 				if (sp->data) {
4938f8829a4aSRandall Stewart 					sctp_m_freem(sp->data);
4939f8829a4aSRandall Stewart 					sp->data = NULL;
4940f8829a4aSRandall Stewart 					sp->tail_mbuf = NULL;
4941d07b2ac6SMichael Tuexen 					sp->length = 0;
4942f8829a4aSRandall Stewart 				}
49438db924deSRandall Stewart 			}
49449eea4a2dSMichael Tuexen 			if (sp->net) {
4945f8829a4aSRandall Stewart 				sctp_free_remote_addr(sp->net);
49469eea4a2dSMichael Tuexen 				sp->net = NULL;
49479eea4a2dSMichael Tuexen 			}
4948d07b2ac6SMichael Tuexen 			sctp_free_a_strmoq(stcb, sp, SCTP_SO_LOCKED);
4949f8829a4aSRandall Stewart 		}
4950f8829a4aSRandall Stewart 	}
49513c503c28SRandall Stewart 	/* sa_ignore FREED_MEMORY */
49524a9ef3f8SMichael Tuexen 	TAILQ_FOREACH_SAFE(strrst, &asoc->resetHead, next_resp, nstrrst) {
49534a9ef3f8SMichael Tuexen 		TAILQ_REMOVE(&asoc->resetHead, strrst, next_resp);
49544a9ef3f8SMichael Tuexen 		SCTP_FREE(strrst, SCTP_M_STRESET);
4955f8829a4aSRandall Stewart 	}
49564a9ef3f8SMichael Tuexen 	TAILQ_FOREACH_SAFE(sq, &asoc->pending_reply_queue, next, nsq) {
4957f8829a4aSRandall Stewart 		TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
4958f8829a4aSRandall Stewart 		if (sq->data) {
4959f8829a4aSRandall Stewart 			sctp_m_freem(sq->data);
4960f8829a4aSRandall Stewart 			sq->data = NULL;
4961f8829a4aSRandall Stewart 		}
4962f8829a4aSRandall Stewart 		sctp_free_remote_addr(sq->whoFrom);
4963f8829a4aSRandall Stewart 		sq->whoFrom = NULL;
4964f8829a4aSRandall Stewart 		sq->stcb = NULL;
4965f8829a4aSRandall Stewart 		/* Free the ctl entry */
496644249214SRandall Stewart 		sctp_free_a_readq(stcb, sq);
49673c503c28SRandall Stewart 		/* sa_ignore FREED_MEMORY */
4968f8829a4aSRandall Stewart 	}
49694a9ef3f8SMichael Tuexen 	TAILQ_FOREACH_SAFE(chk, &asoc->free_chunks, sctp_next, nchk) {
4970f8829a4aSRandall Stewart 		TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next);
4971f8829a4aSRandall Stewart 		if (chk->data) {
4972f8829a4aSRandall Stewart 			sctp_m_freem(chk->data);
4973f8829a4aSRandall Stewart 			chk->data = NULL;
4974f8829a4aSRandall Stewart 		}
4975830d754dSRandall Stewart 		if (chk->holds_key_ref)
4976689e6a5fSMichael Tuexen 			sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4977b3f1ea41SRandall Stewart 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4978f8829a4aSRandall Stewart 		SCTP_DECR_CHK_COUNT();
4979b3f1ea41SRandall Stewart 		atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1);
4980f8829a4aSRandall Stewart 		asoc->free_chunk_cnt--;
49813c503c28SRandall Stewart 		/* sa_ignore FREED_MEMORY */
4982f8829a4aSRandall Stewart 	}
4983f8829a4aSRandall Stewart 	/* pending send queue SHOULD be empty */
49844a9ef3f8SMichael Tuexen 	TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
498549656eefSMichael Tuexen 		if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
498649656eefSMichael Tuexen 			asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
4987325c8c46SMichael Tuexen #ifdef INVARIANTS
4988325c8c46SMichael Tuexen 		} else {
498949656eefSMichael Tuexen 			panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
4990325c8c46SMichael Tuexen #endif
4991325c8c46SMichael Tuexen 		}
4992f8829a4aSRandall Stewart 		TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
4993f8829a4aSRandall Stewart 		if (chk->data) {
49948db924deSRandall Stewart 			if (so) {
49958db924deSRandall Stewart 				/* Still a socket? */
49961edc9dbaSMichael Tuexen 				sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
49971edc9dbaSMichael Tuexen 				    0, chk, SCTP_SO_LOCKED);
49988db924deSRandall Stewart 			}
49998db924deSRandall Stewart 			if (chk->data) {
5000f8829a4aSRandall Stewart 				sctp_m_freem(chk->data);
5001f8829a4aSRandall Stewart 				chk->data = NULL;
5002f8829a4aSRandall Stewart 			}
50038db924deSRandall Stewart 		}
5004830d754dSRandall Stewart 		if (chk->holds_key_ref)
5005689e6a5fSMichael Tuexen 			sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
50069eea4a2dSMichael Tuexen 		if (chk->whoTo) {
5007f8829a4aSRandall Stewart 			sctp_free_remote_addr(chk->whoTo);
50089eea4a2dSMichael Tuexen 			chk->whoTo = NULL;
50099eea4a2dSMichael Tuexen 		}
5010b3f1ea41SRandall Stewart 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5011f8829a4aSRandall Stewart 		SCTP_DECR_CHK_COUNT();
50123c503c28SRandall Stewart 		/* sa_ignore FREED_MEMORY */
5013f8829a4aSRandall Stewart 	}
5014f8829a4aSRandall Stewart 	/* sent queue SHOULD be empty */
50154a9ef3f8SMichael Tuexen 	TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
5016325c8c46SMichael Tuexen 		if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
501749656eefSMichael Tuexen 			if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
501849656eefSMichael Tuexen 				asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
5019a7ad6026SMichael Tuexen #ifdef INVARIANTS
5020a7ad6026SMichael Tuexen 			} else {
502149656eefSMichael Tuexen 				panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
5022a7ad6026SMichael Tuexen #endif
5023a7ad6026SMichael Tuexen 			}
5024a7ad6026SMichael Tuexen 		}
5025f8829a4aSRandall Stewart 		TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
5026f8829a4aSRandall Stewart 		if (chk->data) {
50278db924deSRandall Stewart 			if (so) {
50288db924deSRandall Stewart 				/* Still a socket? */
50291edc9dbaSMichael Tuexen 				sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
50301edc9dbaSMichael Tuexen 				    0, chk, SCTP_SO_LOCKED);
50318db924deSRandall Stewart 			}
50328db924deSRandall Stewart 			if (chk->data) {
5033f8829a4aSRandall Stewart 				sctp_m_freem(chk->data);
5034f8829a4aSRandall Stewart 				chk->data = NULL;
5035f8829a4aSRandall Stewart 			}
50368db924deSRandall Stewart 		}
5037830d754dSRandall Stewart 		if (chk->holds_key_ref)
5038689e6a5fSMichael Tuexen 			sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5039f8829a4aSRandall Stewart 		sctp_free_remote_addr(chk->whoTo);
5040b3f1ea41SRandall Stewart 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5041f8829a4aSRandall Stewart 		SCTP_DECR_CHK_COUNT();
50423c503c28SRandall Stewart 		/* sa_ignore FREED_MEMORY */
5043f8829a4aSRandall Stewart 	}
5044325c8c46SMichael Tuexen #ifdef INVARIANTS
5045325c8c46SMichael Tuexen 	for (i = 0; i < stcb->asoc.streamoutcnt; i++) {
5046325c8c46SMichael Tuexen 		if (stcb->asoc.strmout[i].chunks_on_queues > 0) {
5047325c8c46SMichael Tuexen 			panic("%u chunks left for stream %u.", stcb->asoc.strmout[i].chunks_on_queues, i);
5048325c8c46SMichael Tuexen 		}
5049325c8c46SMichael Tuexen 	}
5050325c8c46SMichael Tuexen #endif
5051f8829a4aSRandall Stewart 	/* control queue MAY not be empty */
50524a9ef3f8SMichael Tuexen 	TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) {
5053f8829a4aSRandall Stewart 		TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next);
5054f8829a4aSRandall Stewart 		if (chk->data) {
5055f8829a4aSRandall Stewart 			sctp_m_freem(chk->data);
5056f8829a4aSRandall Stewart 			chk->data = NULL;
5057f8829a4aSRandall Stewart 		}
5058830d754dSRandall Stewart 		if (chk->holds_key_ref)
5059689e6a5fSMichael Tuexen 			sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5060f8829a4aSRandall Stewart 		sctp_free_remote_addr(chk->whoTo);
5061b3f1ea41SRandall Stewart 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5062f8829a4aSRandall Stewart 		SCTP_DECR_CHK_COUNT();
50633c503c28SRandall Stewart 		/* sa_ignore FREED_MEMORY */
5064f8829a4aSRandall Stewart 	}
5065c54a18d2SRandall Stewart 	/* ASCONF queue MAY not be empty */
50664a9ef3f8SMichael Tuexen 	TAILQ_FOREACH_SAFE(chk, &asoc->asconf_send_queue, sctp_next, nchk) {
5067c54a18d2SRandall Stewart 		TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next);
5068c54a18d2SRandall Stewart 		if (chk->data) {
5069c54a18d2SRandall Stewart 			sctp_m_freem(chk->data);
5070c54a18d2SRandall Stewart 			chk->data = NULL;
5071c54a18d2SRandall Stewart 		}
5072830d754dSRandall Stewart 		if (chk->holds_key_ref)
5073689e6a5fSMichael Tuexen 			sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5074c54a18d2SRandall Stewart 		sctp_free_remote_addr(chk->whoTo);
5075b3f1ea41SRandall Stewart 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5076c54a18d2SRandall Stewart 		SCTP_DECR_CHK_COUNT();
5077c54a18d2SRandall Stewart 		/* sa_ignore FREED_MEMORY */
5078c54a18d2SRandall Stewart 	}
5079f8829a4aSRandall Stewart 	if (asoc->mapping_array) {
5080207304d4SRandall Stewart 		SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
5081f8829a4aSRandall Stewart 		asoc->mapping_array = NULL;
5082f8829a4aSRandall Stewart 	}
5083bf1be571SRandall Stewart 	if (asoc->nr_mapping_array) {
5084bf1be571SRandall Stewart 		SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
5085bf1be571SRandall Stewart 		asoc->nr_mapping_array = NULL;
5086bf1be571SRandall Stewart 	}
5087f8829a4aSRandall Stewart 	/* the stream outs */
5088f8829a4aSRandall Stewart 	if (asoc->strmout) {
5089207304d4SRandall Stewart 		SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
5090f8829a4aSRandall Stewart 		asoc->strmout = NULL;
5091f8829a4aSRandall Stewart 	}
5092ea44232bSRandall Stewart 	asoc->strm_realoutsize = asoc->streamoutcnt = 0;
5093f8829a4aSRandall Stewart 	if (asoc->strmin) {
5094f8829a4aSRandall Stewart 		for (i = 0; i < asoc->streamincnt; i++) {
509544249214SRandall Stewart 			sctp_clean_up_stream(stcb, &asoc->strmin[i].inqueue);
509644249214SRandall Stewart 			sctp_clean_up_stream(stcb, &asoc->strmin[i].uno_inqueue);
5097f8829a4aSRandall Stewart 		}
5098207304d4SRandall Stewart 		SCTP_FREE(asoc->strmin, SCTP_M_STRMI);
5099f8829a4aSRandall Stewart 		asoc->strmin = NULL;
5100f8829a4aSRandall Stewart 	}
5101f8829a4aSRandall Stewart 	asoc->streamincnt = 0;
51024a9ef3f8SMichael Tuexen 	TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
5103a5d547adSRandall Stewart #ifdef INVARIANTS
51044a9ef3f8SMichael Tuexen 		if (SCTP_BASE_INFO(ipi_count_raddr) == 0) {
5105f8829a4aSRandall Stewart 			panic("no net's left alloc'ed, or list points to itself");
5106f8829a4aSRandall Stewart 		}
51074a9ef3f8SMichael Tuexen #endif
5108f8829a4aSRandall Stewart 		TAILQ_REMOVE(&asoc->nets, net, sctp_next);
5109f8829a4aSRandall Stewart 		sctp_free_remote_addr(net);
5110f8829a4aSRandall Stewart 	}
51114a9ef3f8SMichael Tuexen 	LIST_FOREACH_SAFE(laddr, &asoc->sctp_restricted_addrs, sctp_nxt_addr, naddr) {
51123c503c28SRandall Stewart 		/* sa_ignore FREED_MEMORY */
511342551e99SRandall Stewart 		sctp_remove_laddr(laddr);
5114f8829a4aSRandall Stewart 	}
511542551e99SRandall Stewart 
5116f8829a4aSRandall Stewart 	/* pending asconf (address) parameters */
51174a9ef3f8SMichael Tuexen 	TAILQ_FOREACH_SAFE(aparam, &asoc->asconf_queue, next, naparam) {
51183c503c28SRandall Stewart 		/* sa_ignore FREED_MEMORY */
5119f8829a4aSRandall Stewart 		TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
5120207304d4SRandall Stewart 		SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
5121f8829a4aSRandall Stewart 	}
51224a9ef3f8SMichael Tuexen 	TAILQ_FOREACH_SAFE(aack, &asoc->asconf_ack_sent, next, naack) {
5123851b7298SRandall Stewart 		/* sa_ignore FREED_MEMORY */
51242afb3e84SRandall Stewart 		TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
51252afb3e84SRandall Stewart 		if (aack->data != NULL) {
51262afb3e84SRandall Stewart 			sctp_m_freem(aack->data);
51272afb3e84SRandall Stewart 		}
5128b3f1ea41SRandall Stewart 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
5129f8829a4aSRandall Stewart 	}
5130f8829a4aSRandall Stewart 	/* clean up auth stuff */
5131f8829a4aSRandall Stewart 	if (asoc->local_hmacs)
5132f8829a4aSRandall Stewart 		sctp_free_hmaclist(asoc->local_hmacs);
5133f8829a4aSRandall Stewart 	if (asoc->peer_hmacs)
5134f8829a4aSRandall Stewart 		sctp_free_hmaclist(asoc->peer_hmacs);
5135f8829a4aSRandall Stewart 
5136f8829a4aSRandall Stewart 	if (asoc->local_auth_chunks)
5137f8829a4aSRandall Stewart 		sctp_free_chunklist(asoc->local_auth_chunks);
5138f8829a4aSRandall Stewart 	if (asoc->peer_auth_chunks)
5139f8829a4aSRandall Stewart 		sctp_free_chunklist(asoc->peer_auth_chunks);
5140f8829a4aSRandall Stewart 
5141f8829a4aSRandall Stewart 	sctp_free_authinfo(&asoc->authinfo);
5142f8829a4aSRandall Stewart 
51434a9ef3f8SMichael Tuexen 	LIST_FOREACH_SAFE(shared_key, &asoc->shared_keys, next, nshared_key) {
5144f8829a4aSRandall Stewart 		LIST_REMOVE(shared_key, next);
5145f8829a4aSRandall Stewart 		sctp_free_sharedkey(shared_key);
51463c503c28SRandall Stewart 		/* sa_ignore FREED_MEMORY */
5147f8829a4aSRandall Stewart 	}
5148f8829a4aSRandall Stewart 
5149f8829a4aSRandall Stewart 	/* Insert new items here :> */
5150f8829a4aSRandall Stewart 
5151f8829a4aSRandall Stewart 	/* Get rid of LOCK */
5152f5d30f7fSMichael Tuexen 	SCTP_TCB_SEND_UNLOCK(stcb);
51533b3d05d7SMichael Tuexen 	SCTP_TCB_UNLOCK(stcb);
5154f8829a4aSRandall Stewart 	SCTP_TCB_LOCK_DESTROY(stcb);
5155f8829a4aSRandall Stewart 	SCTP_TCB_SEND_LOCK_DESTROY(stcb);
5156a5d547adSRandall Stewart 	if (from_inpcbfree == SCTP_NORMAL_PROC) {
5157a5d547adSRandall Stewart 		SCTP_INP_INFO_WUNLOCK();
5158a5d547adSRandall Stewart 		SCTP_INP_RLOCK(inp);
5159a5d547adSRandall Stewart 	}
5160a5d547adSRandall Stewart #ifdef SCTP_TRACK_FREED_ASOCS
5161a5d547adSRandall Stewart 	if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5162f8829a4aSRandall Stewart 		/* now clean up the tasoc itself */
5163b3f1ea41SRandall Stewart 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5164f8829a4aSRandall Stewart 		SCTP_DECR_ASOC_COUNT();
5165a5d547adSRandall Stewart 	} else {
5166a5d547adSRandall Stewart 		LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist);
5167a5d547adSRandall Stewart 	}
5168a5d547adSRandall Stewart #else
5169b3f1ea41SRandall Stewart 	SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5170a5d547adSRandall Stewart 	SCTP_DECR_ASOC_COUNT();
5171a5d547adSRandall Stewart #endif
5172a5d547adSRandall Stewart 	if (from_inpcbfree == SCTP_NORMAL_PROC) {
5173f8829a4aSRandall Stewart 		if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5174f8829a4aSRandall Stewart 			/*
5175f8829a4aSRandall Stewart 			 * If its NOT the inp_free calling us AND sctp_close
5176f8829a4aSRandall Stewart 			 * as been called, we call back...
5177f8829a4aSRandall Stewart 			 */
5178f8829a4aSRandall Stewart 			SCTP_INP_RUNLOCK(inp);
5179f8829a4aSRandall Stewart 			/*
5180f8829a4aSRandall Stewart 			 * This will start the kill timer (if we are the
5181034b88b0SMichael Tuexen 			 * last one) since we hold an increment yet. But
5182034b88b0SMichael Tuexen 			 * this is the only safe way to do this since
5183034b88b0SMichael Tuexen 			 * otherwise if the socket closes at the same time
5184034b88b0SMichael Tuexen 			 * we are here we might collide in the cleanup.
5185f8829a4aSRandall Stewart 			 */
5186b0552ae2SRandall Stewart 			sctp_inpcb_free(inp,
5187b0552ae2SRandall Stewart 			    SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
5188b0552ae2SRandall Stewart 			    SCTP_CALLED_DIRECTLY_NOCMPSET);
5189f8829a4aSRandall Stewart 			SCTP_INP_DECR_REF(inp);
5190f8829a4aSRandall Stewart 		} else {
5191f8829a4aSRandall Stewart 			/* The socket is still open. */
5192f8829a4aSRandall Stewart 			SCTP_INP_DECR_REF(inp);
5193f8829a4aSRandall Stewart 			SCTP_INP_RUNLOCK(inp);
5194f8829a4aSRandall Stewart 		}
5195bca18028SMichael Tuexen 	}
5196f8829a4aSRandall Stewart 	/* destroyed the asoc */
5197f8829a4aSRandall Stewart #ifdef SCTP_LOG_CLOSING
5198f8829a4aSRandall Stewart 	sctp_log_closing(inp, NULL, 11);
5199f8829a4aSRandall Stewart #endif
5200f8829a4aSRandall Stewart 	return (1);
5201f8829a4aSRandall Stewart }
5202f8829a4aSRandall Stewart 
5203f8829a4aSRandall Stewart /*
5204f8829a4aSRandall Stewart  * determine if a destination is "reachable" based upon the addresses bound
5205f8829a4aSRandall Stewart  * to the current endpoint (e.g. only v4 or v6 currently bound)
5206f8829a4aSRandall Stewart  */
5207f8829a4aSRandall Stewart /*
5208f8829a4aSRandall Stewart  * FIX: if we allow assoc-level bindx(), then this needs to be fixed to use
5209f8829a4aSRandall Stewart  * assoc level v4/v6 flags, as the assoc *may* not have the same address
5210f8829a4aSRandall Stewart  * types bound as its endpoint
5211f8829a4aSRandall Stewart  */
5212f8829a4aSRandall Stewart int
5213f8829a4aSRandall Stewart sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
5214f8829a4aSRandall Stewart {
5215f8829a4aSRandall Stewart 	struct sctp_inpcb *inp;
5216f8829a4aSRandall Stewart 	int answer;
5217f8829a4aSRandall Stewart 
5218f8829a4aSRandall Stewart 	/*
5219f8829a4aSRandall Stewart 	 * No locks here, the TCB, in all cases is already locked and an
5220f8829a4aSRandall Stewart 	 * assoc is up. There is either a INP lock by the caller applied (in
5221f8829a4aSRandall Stewart 	 * asconf case when deleting an address) or NOT in the HB case,
5222f8829a4aSRandall Stewart 	 * however if HB then the INP increment is up and the INP will not
5223f8829a4aSRandall Stewart 	 * be removed (on top of the fact that we have a TCB lock). So we
5224f8829a4aSRandall Stewart 	 * only want to read the sctp_flags, which is either bound-all or
5225f8829a4aSRandall Stewart 	 * not.. no protection needed since once an assoc is up you can't be
5226f8829a4aSRandall Stewart 	 * changing your binding.
5227f8829a4aSRandall Stewart 	 */
5228f8829a4aSRandall Stewart 	inp = stcb->sctp_ep;
5229f8829a4aSRandall Stewart 	if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5230f8829a4aSRandall Stewart 		/* if bound all, destination is not restricted */
5231f8829a4aSRandall Stewart 		/*
5232f8829a4aSRandall Stewart 		 * RRS: Question during lock work: Is this correct? If you
5233f8829a4aSRandall Stewart 		 * are bound-all you still might need to obey the V4--V6
5234f8829a4aSRandall Stewart 		 * flags??? IMO this bound-all stuff needs to be removed!
5235f8829a4aSRandall Stewart 		 */
5236f8829a4aSRandall Stewart 		return (1);
5237f8829a4aSRandall Stewart 	}
5238f8829a4aSRandall Stewart 	/* NOTE: all "scope" checks are done when local addresses are added */
5239e6194c2eSMichael Tuexen 	switch (destaddr->sa_family) {
5240e0e00a4dSMichael Tuexen #ifdef INET6
5241e6194c2eSMichael Tuexen 	case AF_INET6:
5242f8829a4aSRandall Stewart 		answer = inp->ip_inp.inp.inp_vflag & INP_IPV6;
5243e6194c2eSMichael Tuexen 		break;
5244e0e00a4dSMichael Tuexen #endif
5245e0e00a4dSMichael Tuexen #ifdef INET
5246e6194c2eSMichael Tuexen 	case AF_INET:
5247f8829a4aSRandall Stewart 		answer = inp->ip_inp.inp.inp_vflag & INP_IPV4;
5248e6194c2eSMichael Tuexen 		break;
5249e0e00a4dSMichael Tuexen #endif
5250e6194c2eSMichael Tuexen 	default:
5251f8829a4aSRandall Stewart 		/* invalid family, so it's unreachable */
5252f8829a4aSRandall Stewart 		answer = 0;
5253e6194c2eSMichael Tuexen 		break;
5254f8829a4aSRandall Stewart 	}
5255f8829a4aSRandall Stewart 	return (answer);
5256f8829a4aSRandall Stewart }
5257f8829a4aSRandall Stewart 
5258f8829a4aSRandall Stewart /*
5259f8829a4aSRandall Stewart  * update the inp_vflags on an endpoint
5260f8829a4aSRandall Stewart  */
5261f8829a4aSRandall Stewart static void
5262f8829a4aSRandall Stewart sctp_update_ep_vflag(struct sctp_inpcb *inp)
5263f8829a4aSRandall Stewart {
5264f8829a4aSRandall Stewart 	struct sctp_laddr *laddr;
5265f8829a4aSRandall Stewart 
5266f8829a4aSRandall Stewart 	/* first clear the flag */
5267f8829a4aSRandall Stewart 	inp->ip_inp.inp.inp_vflag = 0;
5268f8829a4aSRandall Stewart 	/* set the flag based on addresses on the ep list */
5269f8829a4aSRandall Stewart 	LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5270f8829a4aSRandall Stewart 		if (laddr->ifa == NULL) {
5271ad81507eSRandall Stewart 			SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
52726e9c45e0SMichael Tuexen 			    __func__);
5273f8829a4aSRandall Stewart 			continue;
5274f8829a4aSRandall Stewart 		}
52750053ed28SMichael Tuexen 
527642551e99SRandall Stewart 		if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
5277f8829a4aSRandall Stewart 			continue;
5278f8829a4aSRandall Stewart 		}
5279e6194c2eSMichael Tuexen 		switch (laddr->ifa->address.sa.sa_family) {
5280e6194c2eSMichael Tuexen #ifdef INET6
5281e6194c2eSMichael Tuexen 		case AF_INET6:
5282f8829a4aSRandall Stewart 			inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5283e6194c2eSMichael Tuexen 			break;
5284e6194c2eSMichael Tuexen #endif
5285e6194c2eSMichael Tuexen #ifdef INET
5286e6194c2eSMichael Tuexen 		case AF_INET:
5287f8829a4aSRandall Stewart 			inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5288e6194c2eSMichael Tuexen 			break;
5289e6194c2eSMichael Tuexen #endif
5290e6194c2eSMichael Tuexen 		default:
5291e6194c2eSMichael Tuexen 			break;
5292f8829a4aSRandall Stewart 		}
5293f8829a4aSRandall Stewart 	}
5294f8829a4aSRandall Stewart }
5295f8829a4aSRandall Stewart 
5296f8829a4aSRandall Stewart /*
5297f8829a4aSRandall Stewart  * Add the address to the endpoint local address list There is nothing to be
5298f8829a4aSRandall Stewart  * done if we are bound to all addresses
5299f8829a4aSRandall Stewart  */
5300ad81507eSRandall Stewart void
530142551e99SRandall Stewart sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
5302f8829a4aSRandall Stewart {
5303f8829a4aSRandall Stewart 	struct sctp_laddr *laddr;
530476f8482aSMichael Tuexen 	struct sctp_tcb *stcb;
5305ad81507eSRandall Stewart 	int fnd, error = 0;
5306f8829a4aSRandall Stewart 
5307f8829a4aSRandall Stewart 	fnd = 0;
5308f8829a4aSRandall Stewart 
5309f8829a4aSRandall Stewart 	if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5310f8829a4aSRandall Stewart 		/* You are already bound to all. You have it already */
5311ad81507eSRandall Stewart 		return;
5312f8829a4aSRandall Stewart 	}
5313e6194c2eSMichael Tuexen #ifdef INET6
531442551e99SRandall Stewart 	if (ifa->address.sa.sa_family == AF_INET6) {
531542551e99SRandall Stewart 		if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
531642551e99SRandall Stewart 			/* Can't bind a non-useable addr. */
5317ad81507eSRandall Stewart 			return;
5318f8829a4aSRandall Stewart 		}
531942551e99SRandall Stewart 	}
5320e6194c2eSMichael Tuexen #endif
5321f8829a4aSRandall Stewart 	/* first, is it already present? */
5322f8829a4aSRandall Stewart 	LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5323f8829a4aSRandall Stewart 		if (laddr->ifa == ifa) {
5324f8829a4aSRandall Stewart 			fnd = 1;
5325f8829a4aSRandall Stewart 			break;
5326f8829a4aSRandall Stewart 		}
5327f8829a4aSRandall Stewart 	}
5328f8829a4aSRandall Stewart 
532942551e99SRandall Stewart 	if (fnd == 0) {
533042551e99SRandall Stewart 		/* Not in the ep list */
533142551e99SRandall Stewart 		error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action);
5332f8829a4aSRandall Stewart 		if (error != 0)
5333ad81507eSRandall Stewart 			return;
5334f8829a4aSRandall Stewart 		inp->laddr_count++;
5335f8829a4aSRandall Stewart 		/* update inp_vflag flags */
5336e6194c2eSMichael Tuexen 		switch (ifa->address.sa.sa_family) {
5337e6194c2eSMichael Tuexen #ifdef INET6
5338e6194c2eSMichael Tuexen 		case AF_INET6:
5339f8829a4aSRandall Stewart 			inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5340e6194c2eSMichael Tuexen 			break;
5341e6194c2eSMichael Tuexen #endif
5342e0e00a4dSMichael Tuexen #ifdef INET
5343e6194c2eSMichael Tuexen 		case AF_INET:
5344f8829a4aSRandall Stewart 			inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5345e6194c2eSMichael Tuexen 			break;
5346e6194c2eSMichael Tuexen #endif
5347e6194c2eSMichael Tuexen 		default:
5348e6194c2eSMichael Tuexen 			break;
5349f8829a4aSRandall Stewart 		}
535076f8482aSMichael Tuexen 		LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
535176f8482aSMichael Tuexen 			sctp_add_local_addr_restricted(stcb, ifa);
535276f8482aSMichael Tuexen 		}
5353f8829a4aSRandall Stewart 	}
5354ad81507eSRandall Stewart 	return;
5355f8829a4aSRandall Stewart }
5356f8829a4aSRandall Stewart 
5357f8829a4aSRandall Stewart /*
5358f8829a4aSRandall Stewart  * select a new (hopefully reachable) destination net (should only be used
5359f8829a4aSRandall Stewart  * when we deleted an ep addr that is the only usable source address to reach
5360f8829a4aSRandall Stewart  * the destination net)
5361f8829a4aSRandall Stewart  */
5362f8829a4aSRandall Stewart static void
5363f8829a4aSRandall Stewart sctp_select_primary_destination(struct sctp_tcb *stcb)
5364f8829a4aSRandall Stewart {
5365f8829a4aSRandall Stewart 	struct sctp_nets *net;
5366f8829a4aSRandall Stewart 
5367f8829a4aSRandall Stewart 	TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5368f8829a4aSRandall Stewart 		/* for now, we'll just pick the first reachable one we find */
5369f8829a4aSRandall Stewart 		if (net->dest_state & SCTP_ADDR_UNCONFIRMED)
5370f8829a4aSRandall Stewart 			continue;
5371f8829a4aSRandall Stewart 		if (sctp_destination_is_reachable(stcb,
5372f8829a4aSRandall Stewart 		    (struct sockaddr *)&net->ro._l_addr)) {
5373f8829a4aSRandall Stewart 			/* found a reachable destination */
5374f8829a4aSRandall Stewart 			stcb->asoc.primary_destination = net;
5375f8829a4aSRandall Stewart 		}
5376f8829a4aSRandall Stewart 	}
5377f8829a4aSRandall Stewart 	/* I can't there from here! ...we're gonna die shortly... */
5378f8829a4aSRandall Stewart }
5379f8829a4aSRandall Stewart 
5380f8829a4aSRandall Stewart /*
538164a3a630SMichael Tuexen  * Delete the address from the endpoint local address list. There is nothing
5382f8829a4aSRandall Stewart  * to be done if we are bound to all addresses
5383f8829a4aSRandall Stewart  */
5384ad81507eSRandall Stewart void
538542551e99SRandall Stewart sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa)
5386f8829a4aSRandall Stewart {
5387f8829a4aSRandall Stewart 	struct sctp_laddr *laddr;
5388f8829a4aSRandall Stewart 	int fnd;
5389f8829a4aSRandall Stewart 
5390f8829a4aSRandall Stewart 	fnd = 0;
5391f8829a4aSRandall Stewart 	if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5392f8829a4aSRandall Stewart 		/* You are already bound to all. You have it already */
5393ad81507eSRandall Stewart 		return;
5394f8829a4aSRandall Stewart 	}
5395f8829a4aSRandall Stewart 	LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5396f8829a4aSRandall Stewart 		if (laddr->ifa == ifa) {
5397f8829a4aSRandall Stewart 			fnd = 1;
5398f8829a4aSRandall Stewart 			break;
5399f8829a4aSRandall Stewart 		}
5400f8829a4aSRandall Stewart 	}
5401f8829a4aSRandall Stewart 	if (fnd && (inp->laddr_count < 2)) {
5402f8829a4aSRandall Stewart 		/* can't delete unless there are at LEAST 2 addresses */
5403ad81507eSRandall Stewart 		return;
5404f8829a4aSRandall Stewart 	}
540542551e99SRandall Stewart 	if (fnd) {
5406f8829a4aSRandall Stewart 		/*
5407f8829a4aSRandall Stewart 		 * clean up any use of this address go through our
5408f8829a4aSRandall Stewart 		 * associations and clear any last_used_address that match
5409f8829a4aSRandall Stewart 		 * this one for each assoc, see if a new primary_destination
5410f8829a4aSRandall Stewart 		 * is needed
5411f8829a4aSRandall Stewart 		 */
5412f8829a4aSRandall Stewart 		struct sctp_tcb *stcb;
5413f8829a4aSRandall Stewart 
5414f8829a4aSRandall Stewart 		/* clean up "next_addr_touse" */
5415f8829a4aSRandall Stewart 		if (inp->next_addr_touse == laddr)
5416f8829a4aSRandall Stewart 			/* delete this address */
5417f8829a4aSRandall Stewart 			inp->next_addr_touse = NULL;
5418f8829a4aSRandall Stewart 
5419f8829a4aSRandall Stewart 		/* clean up "last_used_address" */
5420f8829a4aSRandall Stewart 		LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
542142551e99SRandall Stewart 			struct sctp_nets *net;
542242551e99SRandall Stewart 
542342551e99SRandall Stewart 			SCTP_TCB_LOCK(stcb);
5424f8829a4aSRandall Stewart 			if (stcb->asoc.last_used_address == laddr)
5425f8829a4aSRandall Stewart 				/* delete this address */
5426f8829a4aSRandall Stewart 				stcb->asoc.last_used_address = NULL;
5427b7b84c0eSMichael Tuexen 			/*
5428b7b84c0eSMichael Tuexen 			 * Now spin through all the nets and purge any ref
5429b7b84c0eSMichael Tuexen 			 * to laddr
5430b7b84c0eSMichael Tuexen 			 */
543142551e99SRandall Stewart 			TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
543264a3a630SMichael Tuexen 				if (net->ro._s_addr == laddr->ifa) {
543342551e99SRandall Stewart 					/* Yep, purge src address selected */
5434983066f0SAlexander V. Chernikov 					RO_NHFREE(&net->ro);
543542551e99SRandall Stewart 					sctp_free_ifa(net->ro._s_addr);
543642551e99SRandall Stewart 					net->ro._s_addr = NULL;
543742551e99SRandall Stewart 					net->src_addr_selected = 0;
543842551e99SRandall Stewart 				}
543942551e99SRandall Stewart 			}
544042551e99SRandall Stewart 			SCTP_TCB_UNLOCK(stcb);
544142551e99SRandall Stewart 		}		/* for each tcb */
5442f8829a4aSRandall Stewart 		/* remove it from the ep list */
5443f8829a4aSRandall Stewart 		sctp_remove_laddr(laddr);
5444f8829a4aSRandall Stewart 		inp->laddr_count--;
5445f8829a4aSRandall Stewart 		/* update inp_vflag flags */
5446f8829a4aSRandall Stewart 		sctp_update_ep_vflag(inp);
5447f8829a4aSRandall Stewart 	}
5448ad81507eSRandall Stewart 	return;
5449f8829a4aSRandall Stewart }
5450f8829a4aSRandall Stewart 
5451f8829a4aSRandall Stewart /*
54521b649582SRandall Stewart  * Add the address to the TCB local address restricted list.
54531b649582SRandall Stewart  * This is a "pending" address list (eg. addresses waiting for an
54541b649582SRandall Stewart  * ASCONF-ACK response) and cannot be used as a valid source address.
5455f8829a4aSRandall Stewart  */
5456ad81507eSRandall Stewart void
54571b649582SRandall Stewart sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5458f8829a4aSRandall Stewart {
5459f8829a4aSRandall Stewart 	struct sctp_laddr *laddr;
546042551e99SRandall Stewart 	struct sctpladdr *list;
5461f8829a4aSRandall Stewart 
5462f8829a4aSRandall Stewart 	/*
546342551e99SRandall Stewart 	 * Assumes TCB is locked.. and possibly the INP. May need to
5464f8829a4aSRandall Stewart 	 * confirm/fix that if we need it and is not the case.
5465f8829a4aSRandall Stewart 	 */
546642551e99SRandall Stewart 	list = &stcb->asoc.sctp_restricted_addrs;
5467f8829a4aSRandall Stewart 
5468e6194c2eSMichael Tuexen #ifdef INET6
546942551e99SRandall Stewart 	if (ifa->address.sa.sa_family == AF_INET6) {
547042551e99SRandall Stewart 		if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5471f8829a4aSRandall Stewart 			/* Can't bind a non-existent addr. */
5472ad81507eSRandall Stewart 			return;
5473f8829a4aSRandall Stewart 		}
547442551e99SRandall Stewart 	}
5475e6194c2eSMichael Tuexen #endif
5476f8829a4aSRandall Stewart 	/* does the address already exist? */
547742551e99SRandall Stewart 	LIST_FOREACH(laddr, list, sctp_nxt_addr) {
5478f8829a4aSRandall Stewart 		if (laddr->ifa == ifa) {
5479ad81507eSRandall Stewart 			return;
5480f8829a4aSRandall Stewart 		}
5481f8829a4aSRandall Stewart 	}
5482f8829a4aSRandall Stewart 
5483f8829a4aSRandall Stewart 	/* add to the list */
5484ad81507eSRandall Stewart 	(void)sctp_insert_laddr(list, ifa, 0);
5485ad81507eSRandall Stewart 	return;
5486f8829a4aSRandall Stewart }
5487f8829a4aSRandall Stewart 
5488f8829a4aSRandall Stewart /*
54891b649582SRandall Stewart  * Remove a local address from the TCB local address restricted list
5490f8829a4aSRandall Stewart  */
5491ad81507eSRandall Stewart void
54921b649582SRandall Stewart sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5493f8829a4aSRandall Stewart {
5494f8829a4aSRandall Stewart 	struct sctp_inpcb *inp;
5495f8829a4aSRandall Stewart 	struct sctp_laddr *laddr;
5496f8829a4aSRandall Stewart 
5497f8829a4aSRandall Stewart 	/*
5498f8829a4aSRandall Stewart 	 * This is called by asconf work. It is assumed that a) The TCB is
5499f8829a4aSRandall Stewart 	 * locked and b) The INP is locked. This is true in as much as I can
5500f8829a4aSRandall Stewart 	 * trace through the entry asconf code where I did these locks.
5501f8829a4aSRandall Stewart 	 * Again, the ASCONF code is a bit different in that it does lock
5502f8829a4aSRandall Stewart 	 * the INP during its work often times. This must be since we don't
5503f8829a4aSRandall Stewart 	 * want other proc's looking up things while what they are looking
5504f8829a4aSRandall Stewart 	 * up is changing :-D
5505f8829a4aSRandall Stewart 	 */
5506f8829a4aSRandall Stewart 
5507f8829a4aSRandall Stewart 	inp = stcb->sctp_ep;
5508f8829a4aSRandall Stewart 	/* if subset bound and don't allow ASCONF's, can't delete last */
5509f8829a4aSRandall Stewart 	if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
551018e198d3SRandall Stewart 	    sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
551118e198d3SRandall Stewart 		if (stcb->sctp_ep->laddr_count < 2) {
5512f8829a4aSRandall Stewart 			/* can't delete last address */
5513ad81507eSRandall Stewart 			return;
5514f8829a4aSRandall Stewart 		}
5515f8829a4aSRandall Stewart 	}
551642551e99SRandall Stewart 	LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
5517f8829a4aSRandall Stewart 		/* remove the address if it exists */
5518f8829a4aSRandall Stewart 		if (laddr->ifa == NULL)
5519f8829a4aSRandall Stewart 			continue;
5520f8829a4aSRandall Stewart 		if (laddr->ifa == ifa) {
5521f8829a4aSRandall Stewart 			sctp_remove_laddr(laddr);
5522ad81507eSRandall Stewart 			return;
5523f8829a4aSRandall Stewart 		}
5524f8829a4aSRandall Stewart 	}
5525f8829a4aSRandall Stewart 
5526f8829a4aSRandall Stewart 	/* address not found! */
5527ad81507eSRandall Stewart 	return;
5528f8829a4aSRandall Stewart }
5529f8829a4aSRandall Stewart 
5530f8829a4aSRandall Stewart /* sysctl */
5531f8829a4aSRandall Stewart static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;
5532f8829a4aSRandall Stewart static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR;
5533f8829a4aSRandall Stewart 
55342f9e6db0SMichael Tuexen #if defined(SCTP_MCORE_INPUT) && defined(SMP)
5535bfc46083SRandall Stewart struct sctp_mcore_ctrl *sctp_mcore_workers = NULL;
55360071ee5eSRandall Stewart int *sctp_cpuarry = NULL;
55372f9e6db0SMichael Tuexen 
5538bfc46083SRandall Stewart void
5539bfc46083SRandall Stewart sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use)
5540bfc46083SRandall Stewart {
5541bfc46083SRandall Stewart 	/* Queue a packet to a processor for the specified core */
5542bfc46083SRandall Stewart 	struct sctp_mcore_queue *qent;
5543bfc46083SRandall Stewart 	struct sctp_mcore_ctrl *wkq;
5544bfc46083SRandall Stewart 	int need_wake = 0;
5545bfc46083SRandall Stewart 
5546bfc46083SRandall Stewart 	if (sctp_mcore_workers == NULL) {
5547bfc46083SRandall Stewart 		/* Something went way bad during setup */
5548bfc46083SRandall Stewart 		sctp_input_with_port(m, off, 0);
5549bfc46083SRandall Stewart 		return;
5550bfc46083SRandall Stewart 	}
5551bfc46083SRandall Stewart 	SCTP_MALLOC(qent, struct sctp_mcore_queue *,
5552bfc46083SRandall Stewart 	    (sizeof(struct sctp_mcore_queue)),
5553bfc46083SRandall Stewart 	    SCTP_M_MCORE);
5554bfc46083SRandall Stewart 	if (qent == NULL) {
5555bfc46083SRandall Stewart 		/* This is trouble  */
5556bfc46083SRandall Stewart 		sctp_input_with_port(m, off, 0);
5557bfc46083SRandall Stewart 		return;
5558bfc46083SRandall Stewart 	}
5559bfc46083SRandall Stewart 	qent->vn = curvnet;
5560bfc46083SRandall Stewart 	qent->m = m;
5561bfc46083SRandall Stewart 	qent->off = off;
5562bfc46083SRandall Stewart 	qent->v6 = 0;
5563bfc46083SRandall Stewart 	wkq = &sctp_mcore_workers[cpu_to_use];
5564bfc46083SRandall Stewart 	SCTP_MCORE_QLOCK(wkq);
5565bfc46083SRandall Stewart 
5566bfc46083SRandall Stewart 	TAILQ_INSERT_TAIL(&wkq->que, qent, next);
5567bfc46083SRandall Stewart 	if (wkq->running == 0) {
5568bfc46083SRandall Stewart 		need_wake = 1;
5569bfc46083SRandall Stewart 	}
5570bfc46083SRandall Stewart 	SCTP_MCORE_QUNLOCK(wkq);
5571bfc46083SRandall Stewart 	if (need_wake) {
5572bfc46083SRandall Stewart 		wakeup(&wkq->running);
5573bfc46083SRandall Stewart 	}
5574bfc46083SRandall Stewart }
5575bfc46083SRandall Stewart 
5576bfc46083SRandall Stewart static void
5577bfc46083SRandall Stewart sctp_mcore_thread(void *arg)
5578bfc46083SRandall Stewart {
5579bfc46083SRandall Stewart 
5580bfc46083SRandall Stewart 	struct sctp_mcore_ctrl *wkq;
5581bfc46083SRandall Stewart 	struct sctp_mcore_queue *qent;
5582bfc46083SRandall Stewart 
5583bfc46083SRandall Stewart 	wkq = (struct sctp_mcore_ctrl *)arg;
5584bfc46083SRandall Stewart 	struct mbuf *m;
5585bfc46083SRandall Stewart 	int off, v6;
5586bfc46083SRandall Stewart 
5587bfc46083SRandall Stewart 	/* Wait for first tickle */
5588bfc46083SRandall Stewart 	SCTP_MCORE_LOCK(wkq);
5589bfc46083SRandall Stewart 	wkq->running = 0;
5590bfc46083SRandall Stewart 	msleep(&wkq->running,
5591bfc46083SRandall Stewart 	    &wkq->core_mtx,
5592bfc46083SRandall Stewart 	    0, "wait for pkt", 0);
5593bfc46083SRandall Stewart 	SCTP_MCORE_UNLOCK(wkq);
5594bfc46083SRandall Stewart 
5595bfc46083SRandall Stewart 	/* Bind to our cpu */
5596bfc46083SRandall Stewart 	thread_lock(curthread);
5597bfc46083SRandall Stewart 	sched_bind(curthread, wkq->cpuid);
5598bfc46083SRandall Stewart 	thread_unlock(curthread);
5599bfc46083SRandall Stewart 
5600bfc46083SRandall Stewart 	/* Now lets start working */
5601bfc46083SRandall Stewart 	SCTP_MCORE_LOCK(wkq);
5602bfc46083SRandall Stewart 	/* Now grab lock and go */
56037215cc1bSMichael Tuexen 	for (;;) {
5604bfc46083SRandall Stewart 		SCTP_MCORE_QLOCK(wkq);
5605bfc46083SRandall Stewart skip_sleep:
5606bfc46083SRandall Stewart 		wkq->running = 1;
5607bfc46083SRandall Stewart 		qent = TAILQ_FIRST(&wkq->que);
5608bfc46083SRandall Stewart 		if (qent) {
5609bfc46083SRandall Stewart 			TAILQ_REMOVE(&wkq->que, qent, next);
5610bfc46083SRandall Stewart 			SCTP_MCORE_QUNLOCK(wkq);
5611bfc46083SRandall Stewart 			CURVNET_SET(qent->vn);
5612bfc46083SRandall Stewart 			m = qent->m;
5613bfc46083SRandall Stewart 			off = qent->off;
5614bfc46083SRandall Stewart 			v6 = qent->v6;
5615bfc46083SRandall Stewart 			SCTP_FREE(qent, SCTP_M_MCORE);
5616bfc46083SRandall Stewart 			if (v6 == 0) {
5617bfc46083SRandall Stewart 				sctp_input_with_port(m, off, 0);
5618bfc46083SRandall Stewart 			} else {
5619cd3fd531SMichael Tuexen 				SCTP_PRINTF("V6 not yet supported\n");
5620bfc46083SRandall Stewart 				sctp_m_freem(m);
5621bfc46083SRandall Stewart 			}
5622bfc46083SRandall Stewart 			CURVNET_RESTORE();
5623bfc46083SRandall Stewart 			SCTP_MCORE_QLOCK(wkq);
5624bfc46083SRandall Stewart 		}
5625bfc46083SRandall Stewart 		wkq->running = 0;
5626bfc46083SRandall Stewart 		if (!TAILQ_EMPTY(&wkq->que)) {
5627bfc46083SRandall Stewart 			goto skip_sleep;
5628bfc46083SRandall Stewart 		}
5629bfc46083SRandall Stewart 		SCTP_MCORE_QUNLOCK(wkq);
5630bfc46083SRandall Stewart 		msleep(&wkq->running,
5631bfc46083SRandall Stewart 		    &wkq->core_mtx,
5632bfc46083SRandall Stewart 		    0, "wait for pkt", 0);
563360990c0cSMichael Tuexen 	}
5634bfc46083SRandall Stewart }
5635bfc46083SRandall Stewart 
5636bfc46083SRandall Stewart static void
5637bfc46083SRandall Stewart sctp_startup_mcore_threads(void)
5638bfc46083SRandall Stewart {
56390071ee5eSRandall Stewart 	int i, cpu;
5640bfc46083SRandall Stewart 
56410071ee5eSRandall Stewart 	if (mp_ncpus == 1)
5642bfc46083SRandall Stewart 		return;
5643bfc46083SRandall Stewart 
56440071ee5eSRandall Stewart 	if (sctp_mcore_workers != NULL) {
56450071ee5eSRandall Stewart 		/*
56460071ee5eSRandall Stewart 		 * Already been here in some previous vnet?
56470071ee5eSRandall Stewart 		 */
56480071ee5eSRandall Stewart 		return;
56490071ee5eSRandall Stewart 	}
5650bfc46083SRandall Stewart 	SCTP_MALLOC(sctp_mcore_workers, struct sctp_mcore_ctrl *,
56510071ee5eSRandall Stewart 	    ((mp_maxid + 1) * sizeof(struct sctp_mcore_ctrl)),
5652bfc46083SRandall Stewart 	    SCTP_M_MCORE);
5653bfc46083SRandall Stewart 	if (sctp_mcore_workers == NULL) {
5654bfc46083SRandall Stewart 		/* TSNH I hope */
5655bfc46083SRandall Stewart 		return;
5656bfc46083SRandall Stewart 	}
56570071ee5eSRandall Stewart 	memset(sctp_mcore_workers, 0, ((mp_maxid + 1) *
5658bfc46083SRandall Stewart 	    sizeof(struct sctp_mcore_ctrl)));
5659bfc46083SRandall Stewart 	/* Init the structures */
56600071ee5eSRandall Stewart 	for (i = 0; i <= mp_maxid; i++) {
5661bfc46083SRandall Stewart 		TAILQ_INIT(&sctp_mcore_workers[i].que);
5662bfc46083SRandall Stewart 		SCTP_MCORE_LOCK_INIT(&sctp_mcore_workers[i]);
5663bfc46083SRandall Stewart 		SCTP_MCORE_QLOCK_INIT(&sctp_mcore_workers[i]);
5664bfc46083SRandall Stewart 		sctp_mcore_workers[i].cpuid = i;
5665bfc46083SRandall Stewart 	}
56660071ee5eSRandall Stewart 	if (sctp_cpuarry == NULL) {
56670071ee5eSRandall Stewart 		SCTP_MALLOC(sctp_cpuarry, int *,
56680071ee5eSRandall Stewart 		    (mp_ncpus * sizeof(int)),
56690071ee5eSRandall Stewart 		    SCTP_M_MCORE);
56700071ee5eSRandall Stewart 		i = 0;
56710071ee5eSRandall Stewart 		CPU_FOREACH(cpu) {
56720071ee5eSRandall Stewart 			sctp_cpuarry[i] = cpu;
56730071ee5eSRandall Stewart 			i++;
56740071ee5eSRandall Stewart 		}
56750071ee5eSRandall Stewart 	}
5676bfc46083SRandall Stewart 	/* Now start them all */
56770071ee5eSRandall Stewart 	CPU_FOREACH(cpu) {
5678bfc46083SRandall Stewart 		(void)kproc_create(sctp_mcore_thread,
56790071ee5eSRandall Stewart 		    (void *)&sctp_mcore_workers[cpu],
56800071ee5eSRandall Stewart 		    &sctp_mcore_workers[cpu].thread_proc,
56815a50eb65SJohn Baldwin 		    0,
5682bfc46083SRandall Stewart 		    SCTP_KTHREAD_PAGES,
5683bfc46083SRandall Stewart 		    SCTP_MCORE_NAME);
5684bfc46083SRandall Stewart 	}
5685bfc46083SRandall Stewart }
5686bfc46083SRandall Stewart #endif
5687bfc46083SRandall Stewart 
5688f8829a4aSRandall Stewart void
5689e30a1788SMichael Tuexen sctp_pcb_init(void)
5690f8829a4aSRandall Stewart {
5691f8829a4aSRandall Stewart 	/*
5692f8829a4aSRandall Stewart 	 * SCTP initialization for the PCB structures should be called by
5693cd0a4ff6SPedro F. Giffuni 	 * the sctp_init() function.
5694f8829a4aSRandall Stewart 	 */
5695f8829a4aSRandall Stewart 	int i;
5696851b7298SRandall Stewart 	struct timeval tv;
5697f8829a4aSRandall Stewart 
5698b3f1ea41SRandall Stewart 	if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) {
5699f8829a4aSRandall Stewart 		/* error I was called twice */
5700f8829a4aSRandall Stewart 		return;
5701f8829a4aSRandall Stewart 	}
5702b3f1ea41SRandall Stewart 	SCTP_BASE_VAR(sctp_pcb_initialized) = 1;
5703f8829a4aSRandall Stewart 
5704b27a6b7dSRandall Stewart #if defined(SCTP_LOCAL_TRACE_BUF)
57055ba7f91fSMichael Tuexen 	memset(&SCTP_BASE_SYSCTL(sctp_log), 0, sizeof(struct sctp_log));
5706b27a6b7dSRandall Stewart #endif
57072f9e6db0SMichael Tuexen #if defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5708ae26e0a4SRandall Stewart 	SCTP_MALLOC(SCTP_BASE_STATS, struct sctpstat *,
57090071ee5eSRandall Stewart 	    ((mp_maxid + 1) * sizeof(struct sctpstat)),
5710ae26e0a4SRandall Stewart 	    SCTP_M_MCORE);
5711ae26e0a4SRandall Stewart #endif
5712851b7298SRandall Stewart 	(void)SCTP_GETTIME_TIMEVAL(&tv);
57132f9e6db0SMichael Tuexen #if defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
57145ba7f91fSMichael Tuexen 	memset(SCTP_BASE_STATS, 0, sizeof(struct sctpstat) * (mp_maxid + 1));
5715ff014514SRandall Stewart 	SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t)tv.tv_sec;
5716ff014514SRandall Stewart 	SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t)tv.tv_usec;
5717ff014514SRandall Stewart #else
57185ba7f91fSMichael Tuexen 	memset(&SCTP_BASE_STATS, 0, sizeof(struct sctpstat));
5719b3f1ea41SRandall Stewart 	SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t)tv.tv_sec;
5720b3f1ea41SRandall Stewart 	SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t)tv.tv_usec;
5721ff014514SRandall Stewart #endif
5722f8829a4aSRandall Stewart 	/* init the empty list of (All) Endpoints */
5723b3f1ea41SRandall Stewart 	LIST_INIT(&SCTP_BASE_INFO(listhead));
5724f8829a4aSRandall Stewart 
5725f8829a4aSRandall Stewart 	/* init the hash table of endpoints */
5726b3f1ea41SRandall Stewart 	TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize));
5727b3f1ea41SRandall Stewart 	TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize));
5728b3f1ea41SRandall Stewart 	TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale));
5729b3f1ea41SRandall Stewart 	SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31),
5730b3f1ea41SRandall Stewart 	    &SCTP_BASE_INFO(hashasocmark));
5731b3f1ea41SRandall Stewart 	SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5732b3f1ea41SRandall Stewart 	    &SCTP_BASE_INFO(hashmark));
5733b3f1ea41SRandall Stewart 	SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5734b3f1ea41SRandall Stewart 	    &SCTP_BASE_INFO(hashtcpmark));
5735b3f1ea41SRandall Stewart 	SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize);
5736b3f1ea41SRandall Stewart 	SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH,
5737b3f1ea41SRandall Stewart 	    &SCTP_BASE_INFO(hashvrfmark));
573842551e99SRandall Stewart 
5739b3f1ea41SRandall Stewart 	SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE,
5740b3f1ea41SRandall Stewart 	    &SCTP_BASE_INFO(vrf_ifn_hashmark));
5741f8829a4aSRandall Stewart 	/* init the zones */
5742f8829a4aSRandall Stewart 	/*
5743f8829a4aSRandall Stewart 	 * FIX ME: Should check for NULL returns, but if it does fail we are
5744f8829a4aSRandall Stewart 	 * doomed to panic anyways... add later maybe.
5745f8829a4aSRandall Stewart 	 */
5746b3f1ea41SRandall Stewart 	SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep",
5747f8829a4aSRandall Stewart 	    sizeof(struct sctp_inpcb), maxsockets);
5748f8829a4aSRandall Stewart 
5749b3f1ea41SRandall Stewart 	SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc",
5750f8829a4aSRandall Stewart 	    sizeof(struct sctp_tcb), sctp_max_number_of_assoc);
5751f8829a4aSRandall Stewart 
5752b3f1ea41SRandall Stewart 	SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr",
5753f8829a4aSRandall Stewart 	    sizeof(struct sctp_laddr),
5754f8829a4aSRandall Stewart 	    (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5755f8829a4aSRandall Stewart 
5756b3f1ea41SRandall Stewart 	SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr",
5757f8829a4aSRandall Stewart 	    sizeof(struct sctp_nets),
5758f8829a4aSRandall Stewart 	    (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5759f8829a4aSRandall Stewart 
5760b3f1ea41SRandall Stewart 	SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk",
5761f8829a4aSRandall Stewart 	    sizeof(struct sctp_tmit_chunk),
5762b3f1ea41SRandall Stewart 	    (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5763f8829a4aSRandall Stewart 
5764b3f1ea41SRandall Stewart 	SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq",
5765f8829a4aSRandall Stewart 	    sizeof(struct sctp_queued_to_read),
5766b3f1ea41SRandall Stewart 	    (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5767f8829a4aSRandall Stewart 
5768b3f1ea41SRandall Stewart 	SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out",
5769f8829a4aSRandall Stewart 	    sizeof(struct sctp_stream_queue_pending),
5770b3f1ea41SRandall Stewart 	    (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5771f8829a4aSRandall Stewart 
5772b3f1ea41SRandall Stewart 	SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf",
5773c54a18d2SRandall Stewart 	    sizeof(struct sctp_asconf),
5774b3f1ea41SRandall Stewart 	    (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5775c54a18d2SRandall Stewart 
5776b3f1ea41SRandall Stewart 	SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack",
57772afb3e84SRandall Stewart 	    sizeof(struct sctp_asconf_ack),
5778b3f1ea41SRandall Stewart 	    (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
57792afb3e84SRandall Stewart 
5780f8829a4aSRandall Stewart 	/* Master Lock INIT for info structure */
5781f8829a4aSRandall Stewart 	SCTP_INP_INFO_LOCK_INIT();
5782f8829a4aSRandall Stewart 	SCTP_STATLOG_INIT_LOCK();
5783a5d547adSRandall Stewart 
5784f8829a4aSRandall Stewart 	SCTP_IPI_COUNT_INIT();
5785f8829a4aSRandall Stewart 	SCTP_IPI_ADDR_INIT();
5786207304d4SRandall Stewart #ifdef SCTP_PACKET_LOGGING
5787207304d4SRandall Stewart 	SCTP_IP_PKTLOG_INIT();
5788207304d4SRandall Stewart #endif
5789b3f1ea41SRandall Stewart 	LIST_INIT(&SCTP_BASE_INFO(addr_wq));
5790f8829a4aSRandall Stewart 
5791f7517433SRandall Stewart 	SCTP_WQ_ADDR_INIT();
5792f8829a4aSRandall Stewart 	/* not sure if we need all the counts */
5793b3f1ea41SRandall Stewart 	SCTP_BASE_INFO(ipi_count_ep) = 0;
5794f8829a4aSRandall Stewart 	/* assoc/tcb zone info */
5795b3f1ea41SRandall Stewart 	SCTP_BASE_INFO(ipi_count_asoc) = 0;
5796f8829a4aSRandall Stewart 	/* local addrlist zone info */
5797b3f1ea41SRandall Stewart 	SCTP_BASE_INFO(ipi_count_laddr) = 0;
5798f8829a4aSRandall Stewart 	/* remote addrlist zone info */
5799b3f1ea41SRandall Stewart 	SCTP_BASE_INFO(ipi_count_raddr) = 0;
5800f8829a4aSRandall Stewart 	/* chunk info */
5801b3f1ea41SRandall Stewart 	SCTP_BASE_INFO(ipi_count_chunk) = 0;
5802f8829a4aSRandall Stewart 
5803f8829a4aSRandall Stewart 	/* socket queue zone info */
5804b3f1ea41SRandall Stewart 	SCTP_BASE_INFO(ipi_count_readq) = 0;
5805f8829a4aSRandall Stewart 
5806f8829a4aSRandall Stewart 	/* stream out queue cont */
5807b3f1ea41SRandall Stewart 	SCTP_BASE_INFO(ipi_count_strmoq) = 0;
5808f8829a4aSRandall Stewart 
5809b3f1ea41SRandall Stewart 	SCTP_BASE_INFO(ipi_free_strmoq) = 0;
5810b3f1ea41SRandall Stewart 	SCTP_BASE_INFO(ipi_free_chunks) = 0;
5811f8829a4aSRandall Stewart 
5812b3f1ea41SRandall Stewart 	SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer));
5813f8829a4aSRandall Stewart 
5814f8829a4aSRandall Stewart 	/* Init the TIMEWAIT list */
5815a1e13272SRandall Stewart 	for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5816f5366806SMichael Tuexen 		LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]);
5817f8829a4aSRandall Stewart 	}
581842551e99SRandall Stewart 	sctp_startup_iterator();
581942551e99SRandall Stewart 
58202f9e6db0SMichael Tuexen #if defined(SCTP_MCORE_INPUT) && defined(SMP)
5821bfc46083SRandall Stewart 	sctp_startup_mcore_threads();
5822bfc46083SRandall Stewart #endif
5823bfc46083SRandall Stewart 
582442551e99SRandall Stewart 	/*
582542551e99SRandall Stewart 	 * INIT the default VRF which for BSD is the only one, other O/S's
582642551e99SRandall Stewart 	 * may have more. But initially they must start with one and then
582742551e99SRandall Stewart 	 * add the VRF's as addresses are added.
582842551e99SRandall Stewart 	 */
582942551e99SRandall Stewart 	sctp_init_vrf_list(SCTP_DEFAULT_VRF);
5830f8829a4aSRandall Stewart }
5831f8829a4aSRandall Stewart 
5832c54a18d2SRandall Stewart /*
5833b3f1ea41SRandall Stewart  * Assumes that the SCTP_BASE_INFO() lock is NOT held.
5834c54a18d2SRandall Stewart  */
5835c54a18d2SRandall Stewart void
5836c54a18d2SRandall Stewart sctp_pcb_finish(void)
5837c54a18d2SRandall Stewart {
5838c54a18d2SRandall Stewart 	struct sctp_vrflist *vrf_bucket;
58394a9ef3f8SMichael Tuexen 	struct sctp_vrf *vrf, *nvrf;
58404a9ef3f8SMichael Tuexen 	struct sctp_ifn *ifn, *nifn;
58414a9ef3f8SMichael Tuexen 	struct sctp_ifa *ifa, *nifa;
5842b3f1ea41SRandall Stewart 	struct sctpvtaghead *chain;
5843b3f1ea41SRandall Stewart 	struct sctp_tagblock *twait_block, *prev_twait_block;
58444a9ef3f8SMichael Tuexen 	struct sctp_laddr *wi, *nwi;
5845b3f1ea41SRandall Stewart 	int i;
5846f7517433SRandall Stewart 	struct sctp_iterator *it, *nit;
5847b6c57802SMichael Tuexen 
58482b1c7de4SMichael Tuexen 	if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
58492b1c7de4SMichael Tuexen 		SCTP_PRINTF("%s: race condition on teardown.\n", __func__);
58502b1c7de4SMichael Tuexen 		return;
58512b1c7de4SMichael Tuexen 	}
58522b1c7de4SMichael Tuexen 	SCTP_BASE_VAR(sctp_pcb_initialized) = 0;
5853f4f34bdeSMichael Tuexen 	/*
5854f4f34bdeSMichael Tuexen 	 * In FreeBSD the iterator thread never exits but we do clean up.
5855f4f34bdeSMichael Tuexen 	 * The only way FreeBSD reaches here is if we have VRF's but we
5856f4f34bdeSMichael Tuexen 	 * still add the ifdef to make it compile on old versions.
5857f4f34bdeSMichael Tuexen 	 */
58582b1c7de4SMichael Tuexen retry:
5859b6c57802SMichael Tuexen 	SCTP_IPI_ITERATOR_WQ_LOCK();
58602b1c7de4SMichael Tuexen 	/*
58612b1c7de4SMichael Tuexen 	 * sctp_iterator_worker() might be working on an it entry without
58622b1c7de4SMichael Tuexen 	 * holding the lock.  We won't find it on the list either and
58632b1c7de4SMichael Tuexen 	 * continue and free/destroy it.  While holding the lock, spin, to
58642b1c7de4SMichael Tuexen 	 * avoid the race condition as sctp_iterator_worker() will have to
58653f53d622SMichael Tuexen 	 * wait to re-acquire the lock.
58662b1c7de4SMichael Tuexen 	 */
58672b1c7de4SMichael Tuexen 	if (sctp_it_ctl.iterator_running != 0 || sctp_it_ctl.cur_it != NULL) {
58682b1c7de4SMichael Tuexen 		SCTP_IPI_ITERATOR_WQ_UNLOCK();
58692b1c7de4SMichael Tuexen 		SCTP_PRINTF("%s: Iterator running while we held the lock. Retry. "
58702b1c7de4SMichael Tuexen 		    "cur_it=%p\n", __func__, sctp_it_ctl.cur_it);
58712b1c7de4SMichael Tuexen 		DELAY(10);
58722b1c7de4SMichael Tuexen 		goto retry;
58732b1c7de4SMichael Tuexen 	}
58744a9ef3f8SMichael Tuexen 	TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
5875f7517433SRandall Stewart 		if (it->vn != curvnet) {
5876f7517433SRandall Stewart 			continue;
5877f7517433SRandall Stewart 		}
58784a9ef3f8SMichael Tuexen 		TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
5879f7517433SRandall Stewart 		if (it->function_atend != NULL) {
5880f7517433SRandall Stewart 			(*it->function_atend) (it->pointer, it->val);
5881f7517433SRandall Stewart 		}
5882f7517433SRandall Stewart 		SCTP_FREE(it, SCTP_M_ITER);
5883f7517433SRandall Stewart 	}
5884f7517433SRandall Stewart 	SCTP_IPI_ITERATOR_WQ_UNLOCK();
5885f7517433SRandall Stewart 	SCTP_ITERATOR_LOCK();
5886f7517433SRandall Stewart 	if ((sctp_it_ctl.cur_it) &&
5887f7517433SRandall Stewart 	    (sctp_it_ctl.cur_it->vn == curvnet)) {
5888f7517433SRandall Stewart 		sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
5889f7517433SRandall Stewart 	}
5890f7517433SRandall Stewart 	SCTP_ITERATOR_UNLOCK();
58912b1c7de4SMichael Tuexen 	SCTP_OS_TIMER_STOP_DRAIN(&SCTP_BASE_INFO(addr_wq_timer.timer));
5892f7517433SRandall Stewart 	SCTP_WQ_ADDR_LOCK();
58934a9ef3f8SMichael Tuexen 	LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
5894b6c57802SMichael Tuexen 		LIST_REMOVE(wi, sctp_nxt_addr);
5895b6c57802SMichael Tuexen 		SCTP_DECR_LADDR_COUNT();
589624110da0SMichael Tuexen 		if (wi->action == SCTP_DEL_IP_ADDRESS) {
589724110da0SMichael Tuexen 			SCTP_FREE(wi->ifa, SCTP_M_IFA);
589824110da0SMichael Tuexen 		}
5899b6c57802SMichael Tuexen 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi);
5900b6c57802SMichael Tuexen 	}
5901f7517433SRandall Stewart 	SCTP_WQ_ADDR_UNLOCK();
5902b6c57802SMichael Tuexen 
5903c54a18d2SRandall Stewart 	/*
5904c54a18d2SRandall Stewart 	 * free the vrf/ifn/ifa lists and hashes (be sure address monitor is
5905c54a18d2SRandall Stewart 	 * destroyed first).
5906c54a18d2SRandall Stewart 	 */
59077f0ad227SMichael Tuexen 	SCTP_IPI_ADDR_WLOCK();
5908b3f1ea41SRandall Stewart 	vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))];
59094a9ef3f8SMichael Tuexen 	LIST_FOREACH_SAFE(vrf, vrf_bucket, next_vrf, nvrf) {
59104a9ef3f8SMichael Tuexen 		LIST_FOREACH_SAFE(ifn, &vrf->ifnlist, next_ifn, nifn) {
59114a9ef3f8SMichael Tuexen 			LIST_FOREACH_SAFE(ifa, &ifn->ifalist, next_ifa, nifa) {
5912c54a18d2SRandall Stewart 				/* free the ifa */
5913c54a18d2SRandall Stewart 				LIST_REMOVE(ifa, next_bucket);
5914c54a18d2SRandall Stewart 				LIST_REMOVE(ifa, next_ifa);
5915c54a18d2SRandall Stewart 				SCTP_FREE(ifa, SCTP_M_IFA);
5916c54a18d2SRandall Stewart 			}
5917c54a18d2SRandall Stewart 			/* free the ifn */
5918c54a18d2SRandall Stewart 			LIST_REMOVE(ifn, next_bucket);
5919c54a18d2SRandall Stewart 			LIST_REMOVE(ifn, next_ifn);
5920c54a18d2SRandall Stewart 			SCTP_FREE(ifn, SCTP_M_IFN);
5921c54a18d2SRandall Stewart 		}
5922c54a18d2SRandall Stewart 		SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
5923c54a18d2SRandall Stewart 		/* free the vrf */
5924c54a18d2SRandall Stewart 		LIST_REMOVE(vrf, next_vrf);
5925c54a18d2SRandall Stewart 		SCTP_FREE(vrf, SCTP_M_VRF);
5926c54a18d2SRandall Stewart 	}
59277f0ad227SMichael Tuexen 	SCTP_IPI_ADDR_WUNLOCK();
5928c54a18d2SRandall Stewart 	/* free the vrf hashes */
5929b3f1ea41SRandall Stewart 	SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark));
5930b3f1ea41SRandall Stewart 	SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark));
5931b3f1ea41SRandall Stewart 
5932b3f1ea41SRandall Stewart 	/*
5933b3f1ea41SRandall Stewart 	 * free the TIMEWAIT list elements malloc'd in the function
5934b3f1ea41SRandall Stewart 	 * sctp_add_vtag_to_timewait()...
5935b3f1ea41SRandall Stewart 	 */
5936a1e13272SRandall Stewart 	for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5937b3f1ea41SRandall Stewart 		chain = &SCTP_BASE_INFO(vtag_timewait)[i];
593883fc1165SMichael Tuexen 		if (!LIST_EMPTY(chain)) {
5939b3f1ea41SRandall Stewart 			prev_twait_block = NULL;
5940b3f1ea41SRandall Stewart 			LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
5941b3f1ea41SRandall Stewart 				if (prev_twait_block) {
5942b3f1ea41SRandall Stewart 					SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
5943b3f1ea41SRandall Stewart 				}
5944b3f1ea41SRandall Stewart 				prev_twait_block = twait_block;
5945b3f1ea41SRandall Stewart 			}
5946b3f1ea41SRandall Stewart 			SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
5947b3f1ea41SRandall Stewart 		}
5948b3f1ea41SRandall Stewart 	}
5949c54a18d2SRandall Stewart 
5950c54a18d2SRandall Stewart 	/* free the locks and mutexes */
5951c54a18d2SRandall Stewart #ifdef SCTP_PACKET_LOGGING
5952c54a18d2SRandall Stewart 	SCTP_IP_PKTLOG_DESTROY();
5953c54a18d2SRandall Stewart #endif
5954c54a18d2SRandall Stewart 	SCTP_IPI_ADDR_DESTROY();
5955c54a18d2SRandall Stewart 	SCTP_STATLOG_DESTROY();
5956c54a18d2SRandall Stewart 	SCTP_INP_INFO_LOCK_DESTROY();
5957c54a18d2SRandall Stewart 
5958f7517433SRandall Stewart 	SCTP_WQ_ADDR_DESTROY();
5959f7517433SRandall Stewart 
59602b1c7de4SMichael Tuexen 	/* Get rid of other stuff too. */
59612b1c7de4SMichael Tuexen 	if (SCTP_BASE_INFO(sctp_asochash) != NULL)
59622b1c7de4SMichael Tuexen 		SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark));
59632b1c7de4SMichael Tuexen 	if (SCTP_BASE_INFO(sctp_ephash) != NULL)
59642b1c7de4SMichael Tuexen 		SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark));
59652b1c7de4SMichael Tuexen 	if (SCTP_BASE_INFO(sctp_tcpephash) != NULL)
59662b1c7de4SMichael Tuexen 		SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark));
59672b1c7de4SMichael Tuexen 
5968b3f1ea41SRandall Stewart 	SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep));
5969b3f1ea41SRandall Stewart 	SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc));
5970b3f1ea41SRandall Stewart 	SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr));
5971b3f1ea41SRandall Stewart 	SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net));
5972b3f1ea41SRandall Stewart 	SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk));
5973b3f1ea41SRandall Stewart 	SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq));
5974b3f1ea41SRandall Stewart 	SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq));
5975b3f1ea41SRandall Stewart 	SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf));
5976b3f1ea41SRandall Stewart 	SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack));
59772f9e6db0SMichael Tuexen #if defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5978ae26e0a4SRandall Stewart 	SCTP_FREE(SCTP_BASE_STATS, SCTP_M_MCORE);
5979ae26e0a4SRandall Stewart #endif
5980c54a18d2SRandall Stewart }
5981c54a18d2SRandall Stewart 
5982f8829a4aSRandall Stewart int
5983f8829a4aSRandall Stewart sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m,
5984b1754ad1SMichael Tuexen     int offset, int limit,
5985b1754ad1SMichael Tuexen     struct sockaddr *src, struct sockaddr *dst,
5986ec70917fSMichael Tuexen     struct sockaddr *altsa, uint16_t port)
5987f8829a4aSRandall Stewart {
5988f8829a4aSRandall Stewart 	/*
5989f8829a4aSRandall Stewart 	 * grub through the INIT pulling addresses and loading them to the
5990f8829a4aSRandall Stewart 	 * nets structure in the asoc. The from address in the mbuf should
5991f8829a4aSRandall Stewart 	 * also be loaded (if it is not already). This routine can be called
5992f8829a4aSRandall Stewart 	 * with either INIT or INIT-ACK's as long as the m points to the IP
5993f8829a4aSRandall Stewart 	 * packet and the offset points to the beginning of the parameters.
5994f8829a4aSRandall Stewart 	 */
599560990c0cSMichael Tuexen 	struct sctp_inpcb *inp;
59964a9ef3f8SMichael Tuexen 	struct sctp_nets *net, *nnet, *net_tmp;
5997f4358911SMichael Tuexen 	struct sctp_paramhdr *phdr, param_buf;
5998f8829a4aSRandall Stewart 	struct sctp_tcb *stcb_tmp;
5999f8829a4aSRandall Stewart 	uint16_t ptype, plen;
6000f8829a4aSRandall Stewart 	struct sockaddr *sa;
6001f42a358aSRandall Stewart 	uint8_t random_store[SCTP_PARAM_BUFFER_SIZE];
60025e54f665SRandall Stewart 	struct sctp_auth_random *p_random = NULL;
6003f8829a4aSRandall Stewart 	uint16_t random_len = 0;
6004f42a358aSRandall Stewart 	uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE];
6005f8829a4aSRandall Stewart 	struct sctp_auth_hmac_algo *hmacs = NULL;
6006f8829a4aSRandall Stewart 	uint16_t hmacs_len = 0;
60072afb3e84SRandall Stewart 	uint8_t saw_asconf = 0;
60082afb3e84SRandall Stewart 	uint8_t saw_asconf_ack = 0;
6009f42a358aSRandall Stewart 	uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE];
6010f8829a4aSRandall Stewart 	struct sctp_auth_chunk_list *chunks = NULL;
6011f8829a4aSRandall Stewart 	uint16_t num_chunks = 0;
6012f8829a4aSRandall Stewart 	sctp_key_t *new_key;
6013f8829a4aSRandall Stewart 	uint32_t keylen;
6014f8829a4aSRandall Stewart 	int got_random = 0, got_hmacs = 0, got_chklist = 0;
6015c79bec9cSMichael Tuexen 	uint8_t peer_supports_ecn;
6016c79bec9cSMichael Tuexen 	uint8_t peer_supports_prsctp;
6017c79bec9cSMichael Tuexen 	uint8_t peer_supports_auth;
6018c79bec9cSMichael Tuexen 	uint8_t peer_supports_asconf;
6019c79bec9cSMichael Tuexen 	uint8_t peer_supports_asconf_ack;
6020c79bec9cSMichael Tuexen 	uint8_t peer_supports_reconfig;
6021c79bec9cSMichael Tuexen 	uint8_t peer_supports_nrsack;
6022c79bec9cSMichael Tuexen 	uint8_t peer_supports_pktdrop;
602344249214SRandall Stewart 	uint8_t peer_supports_idata;
6024e6194c2eSMichael Tuexen #ifdef INET
6025e6194c2eSMichael Tuexen 	struct sockaddr_in sin;
6026e6194c2eSMichael Tuexen #endif
6027e6194c2eSMichael Tuexen #ifdef INET6
6028e6194c2eSMichael Tuexen 	struct sockaddr_in6 sin6;
6029e6194c2eSMichael Tuexen #endif
6030e6194c2eSMichael Tuexen 
6031e6194c2eSMichael Tuexen 	/* First get the destination address setup too. */
6032e6194c2eSMichael Tuexen #ifdef INET
6033e6194c2eSMichael Tuexen 	memset(&sin, 0, sizeof(sin));
6034f8829a4aSRandall Stewart 	sin.sin_family = AF_INET;
6035f8829a4aSRandall Stewart 	sin.sin_len = sizeof(sin);
6036f8829a4aSRandall Stewart 	sin.sin_port = stcb->rport;
6037e6194c2eSMichael Tuexen #endif
6038e6194c2eSMichael Tuexen #ifdef INET6
6039e6194c2eSMichael Tuexen 	memset(&sin6, 0, sizeof(sin6));
6040f8829a4aSRandall Stewart 	sin6.sin6_family = AF_INET6;
6041f8829a4aSRandall Stewart 	sin6.sin6_len = sizeof(struct sockaddr_in6);
6042f8829a4aSRandall Stewart 	sin6.sin6_port = stcb->rport;
6043e6194c2eSMichael Tuexen #endif
6044dc81ec89SMichael Tuexen 	if (altsa) {
6045dc81ec89SMichael Tuexen 		sa = altsa;
6046dc81ec89SMichael Tuexen 	} else {
6047b1754ad1SMichael Tuexen 		sa = src;
6048f8829a4aSRandall Stewart 	}
604944249214SRandall Stewart 	peer_supports_idata = 0;
6050c79bec9cSMichael Tuexen 	peer_supports_ecn = 0;
6051c79bec9cSMichael Tuexen 	peer_supports_prsctp = 0;
6052c79bec9cSMichael Tuexen 	peer_supports_auth = 0;
6053c79bec9cSMichael Tuexen 	peer_supports_asconf = 0;
6054b954d816SMichael Tuexen 	peer_supports_asconf_ack = 0;
6055c79bec9cSMichael Tuexen 	peer_supports_reconfig = 0;
6056c79bec9cSMichael Tuexen 	peer_supports_nrsack = 0;
6057c79bec9cSMichael Tuexen 	peer_supports_pktdrop = 0;
6058f8829a4aSRandall Stewart 	TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
6059f8829a4aSRandall Stewart 		/* mark all addresses that we have currently on the list */
6060f8829a4aSRandall Stewart 		net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC;
6061f8829a4aSRandall Stewart 	}
6062f8829a4aSRandall Stewart 	/* does the source address already exist? if so skip it */
606360990c0cSMichael Tuexen 	inp = stcb->sctp_ep;
606450cec919SRandall Stewart 	atomic_add_int(&stcb->asoc.refcnt, 1);
6065b1754ad1SMichael Tuexen 	stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, dst, stcb);
606650cec919SRandall Stewart 	atomic_add_int(&stcb->asoc.refcnt, -1);
6067f8829a4aSRandall Stewart 
6068f8829a4aSRandall Stewart 	if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) {
6069f8829a4aSRandall Stewart 		/* we must add the source address */
6070f8829a4aSRandall Stewart 		/* no scope set here since we have a tcb already. */
6071e6194c2eSMichael Tuexen 		switch (sa->sa_family) {
6072e6194c2eSMichael Tuexen #ifdef INET
6073e6194c2eSMichael Tuexen 		case AF_INET:
6074a1cb341bSMichael Tuexen 			if (stcb->asoc.scope.ipv4_addr_legal) {
6075ec70917fSMichael Tuexen 				if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) {
6076f8829a4aSRandall Stewart 					return (-1);
6077f8829a4aSRandall Stewart 				}
6078e6194c2eSMichael Tuexen 			}
6079e6194c2eSMichael Tuexen 			break;
6080e6194c2eSMichael Tuexen #endif
6081e6194c2eSMichael Tuexen #ifdef INET6
6082e6194c2eSMichael Tuexen 		case AF_INET6:
6083a1cb341bSMichael Tuexen 			if (stcb->asoc.scope.ipv6_addr_legal) {
6084ec70917fSMichael Tuexen 				if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
6085f8829a4aSRandall Stewart 					return (-2);
6086f8829a4aSRandall Stewart 				}
6087f8829a4aSRandall Stewart 			}
6088e6194c2eSMichael Tuexen 			break;
6089e6194c2eSMichael Tuexen #endif
6090e6194c2eSMichael Tuexen 		default:
6091e6194c2eSMichael Tuexen 			break;
6092e6194c2eSMichael Tuexen 		}
6093f8829a4aSRandall Stewart 	} else {
6094f8829a4aSRandall Stewart 		if (net_tmp != NULL && stcb_tmp == stcb) {
6095f8829a4aSRandall Stewart 			net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC;
6096f8829a4aSRandall Stewart 		} else if (stcb_tmp != stcb) {
6097f8829a4aSRandall Stewart 			/* It belongs to another association? */
6098eacc51c5SRandall Stewart 			if (stcb_tmp)
6099f8829a4aSRandall Stewart 				SCTP_TCB_UNLOCK(stcb_tmp);
6100f8829a4aSRandall Stewart 			return (-3);
6101f8829a4aSRandall Stewart 		}
6102f8829a4aSRandall Stewart 	}
6103f8829a4aSRandall Stewart 	if (stcb->asoc.state == 0) {
6104f8829a4aSRandall Stewart 		/* the assoc was freed? */
6105f8829a4aSRandall Stewart 		return (-4);
6106f8829a4aSRandall Stewart 	}
6107f8829a4aSRandall Stewart 	/* now we must go through each of the params. */
6108f4358911SMichael Tuexen 	phdr = sctp_get_next_param(m, offset, &param_buf, sizeof(param_buf));
6109f8829a4aSRandall Stewart 	while (phdr) {
6110f8829a4aSRandall Stewart 		ptype = ntohs(phdr->param_type);
6111f8829a4aSRandall Stewart 		plen = ntohs(phdr->param_length);
6112f8829a4aSRandall Stewart 		/*
6113cd3fd531SMichael Tuexen 		 * SCTP_PRINTF("ptype => %0x, plen => %d\n",
6114cd3fd531SMichael Tuexen 		 * (uint32_t)ptype, (int)plen);
6115f8829a4aSRandall Stewart 		 */
6116f8829a4aSRandall Stewart 		if (offset + plen > limit) {
6117f8829a4aSRandall Stewart 			break;
6118f8829a4aSRandall Stewart 		}
61196088175aSMichael Tuexen 		if (plen < sizeof(struct sctp_paramhdr)) {
6120f8829a4aSRandall Stewart 			break;
6121f8829a4aSRandall Stewart 		}
6122e6194c2eSMichael Tuexen #ifdef INET
6123f8829a4aSRandall Stewart 		if (ptype == SCTP_IPV4_ADDRESS) {
6124a1cb341bSMichael Tuexen 			if (stcb->asoc.scope.ipv4_addr_legal) {
6125f8829a4aSRandall Stewart 				struct sctp_ipv4addr_param *p4, p4_buf;
6126f8829a4aSRandall Stewart 
6127f8829a4aSRandall Stewart 				/* ok get the v4 address and check/add */
6128f8829a4aSRandall Stewart 				phdr = sctp_get_next_param(m, offset,
6129a99b6783SRandall Stewart 				    (struct sctp_paramhdr *)&p4_buf,
6130a99b6783SRandall Stewart 				    sizeof(p4_buf));
6131f8829a4aSRandall Stewart 				if (plen != sizeof(struct sctp_ipv4addr_param) ||
6132f8829a4aSRandall Stewart 				    phdr == NULL) {
6133f8829a4aSRandall Stewart 					return (-5);
6134f8829a4aSRandall Stewart 				}
6135f8829a4aSRandall Stewart 				p4 = (struct sctp_ipv4addr_param *)phdr;
6136f8829a4aSRandall Stewart 				sin.sin_addr.s_addr = p4->addr;
6137fc048708SMichael Tuexen 				if (IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) {
6138d06c82f1SRandall Stewart 					/* Skip multi-cast addresses */
6139d06c82f1SRandall Stewart 					goto next_param;
6140d06c82f1SRandall Stewart 				}
614117205eccSRandall Stewart 				if ((sin.sin_addr.s_addr == INADDR_BROADCAST) ||
614217205eccSRandall Stewart 				    (sin.sin_addr.s_addr == INADDR_ANY)) {
614317205eccSRandall Stewart 					goto next_param;
614417205eccSRandall Stewart 				}
6145f8829a4aSRandall Stewart 				sa = (struct sockaddr *)&sin;
6146f8829a4aSRandall Stewart 				inp = stcb->sctp_ep;
614750cec919SRandall Stewart 				atomic_add_int(&stcb->asoc.refcnt, 1);
6148f8829a4aSRandall Stewart 				stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6149b1754ad1SMichael Tuexen 				    dst, stcb);
615050cec919SRandall Stewart 				atomic_add_int(&stcb->asoc.refcnt, -1);
6151f8829a4aSRandall Stewart 
6152f8829a4aSRandall Stewart 				if ((stcb_tmp == NULL && inp == stcb->sctp_ep) ||
6153f8829a4aSRandall Stewart 				    inp == NULL) {
6154f8829a4aSRandall Stewart 					/* we must add the source address */
6155f8829a4aSRandall Stewart 					/*
6156f8829a4aSRandall Stewart 					 * no scope set since we have a tcb
6157f8829a4aSRandall Stewart 					 * already
6158f8829a4aSRandall Stewart 					 */
6159f8829a4aSRandall Stewart 
6160f8829a4aSRandall Stewart 					/*
6161f8829a4aSRandall Stewart 					 * we must validate the state again
6162f8829a4aSRandall Stewart 					 * here
6163f8829a4aSRandall Stewart 					 */
61646d9e8f2bSRandall Stewart 			add_it_now:
6165f8829a4aSRandall Stewart 					if (stcb->asoc.state == 0) {
6166f8829a4aSRandall Stewart 						/* the assoc was freed? */
6167f8829a4aSRandall Stewart 						return (-7);
6168f8829a4aSRandall Stewart 					}
6169ec70917fSMichael Tuexen 					if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) {
6170f8829a4aSRandall Stewart 						return (-8);
6171f8829a4aSRandall Stewart 					}
6172f8829a4aSRandall Stewart 				} else if (stcb_tmp == stcb) {
6173f8829a4aSRandall Stewart 					if (stcb->asoc.state == 0) {
6174f8829a4aSRandall Stewart 						/* the assoc was freed? */
6175f8829a4aSRandall Stewart 						return (-10);
6176f8829a4aSRandall Stewart 					}
6177f8829a4aSRandall Stewart 					if (net != NULL) {
6178f8829a4aSRandall Stewart 						/* clear flag */
6179f8829a4aSRandall Stewart 						net->dest_state &=
6180f8829a4aSRandall Stewart 						    ~SCTP_ADDR_NOT_IN_ASSOC;
6181f8829a4aSRandall Stewart 					}
6182f8829a4aSRandall Stewart 				} else {
6183f8829a4aSRandall Stewart 					/*
6184f8829a4aSRandall Stewart 					 * strange, address is in another
6185f8829a4aSRandall Stewart 					 * assoc? straighten out locks.
6186f8829a4aSRandall Stewart 					 */
61876d9e8f2bSRandall Stewart 					if (stcb_tmp) {
6188839d21d6SMichael Tuexen 						if (SCTP_GET_STATE(stcb_tmp) == SCTP_STATE_COOKIE_WAIT) {
6189267dbe63SMichael Tuexen 							struct mbuf *op_err;
6190267dbe63SMichael Tuexen 							char msg[SCTP_DIAG_INFO_LEN];
6191267dbe63SMichael Tuexen 
6192b7b84c0eSMichael Tuexen 							/*
6193b7b84c0eSMichael Tuexen 							 * in setup state we
6194b7b84c0eSMichael Tuexen 							 * abort this guy
6195b7b84c0eSMichael Tuexen 							 */
6196999f86d6SMichael Tuexen 							SCTP_SNPRINTF(msg, sizeof(msg),
6197821bae7cSMichael Tuexen 							    "%s:%d at %s", __FILE__, __LINE__, __func__);
6198267dbe63SMichael Tuexen 							op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
6199267dbe63SMichael Tuexen 							    msg);
62006d9e8f2bSRandall Stewart 							sctp_abort_an_association(stcb_tmp->sctp_ep,
6201*105b68b4SMichael Tuexen 							    stcb_tmp, op_err, false,
6202267dbe63SMichael Tuexen 							    SCTP_SO_NOT_LOCKED);
62036d9e8f2bSRandall Stewart 							goto add_it_now;
62046d9e8f2bSRandall Stewart 						}
6205b54d3a6cSRandall Stewart 						SCTP_TCB_UNLOCK(stcb_tmp);
62066d9e8f2bSRandall Stewart 					}
62070053ed28SMichael Tuexen 
6208f8829a4aSRandall Stewart 					if (stcb->asoc.state == 0) {
6209f8829a4aSRandall Stewart 						/* the assoc was freed? */
6210f8829a4aSRandall Stewart 						return (-12);
6211f8829a4aSRandall Stewart 					}
6212f8829a4aSRandall Stewart 					return (-13);
6213f8829a4aSRandall Stewart 				}
6214f8829a4aSRandall Stewart 			}
6215e6194c2eSMichael Tuexen 		} else
6216e6194c2eSMichael Tuexen #endif
6217e6194c2eSMichael Tuexen #ifdef INET6
6218e6194c2eSMichael Tuexen 		if (ptype == SCTP_IPV6_ADDRESS) {
6219a1cb341bSMichael Tuexen 			if (stcb->asoc.scope.ipv6_addr_legal) {
6220f8829a4aSRandall Stewart 				/* ok get the v6 address and check/add */
6221f8829a4aSRandall Stewart 				struct sctp_ipv6addr_param *p6, p6_buf;
6222f8829a4aSRandall Stewart 
6223f8829a4aSRandall Stewart 				phdr = sctp_get_next_param(m, offset,
6224a99b6783SRandall Stewart 				    (struct sctp_paramhdr *)&p6_buf,
6225a99b6783SRandall Stewart 				    sizeof(p6_buf));
6226f8829a4aSRandall Stewart 				if (plen != sizeof(struct sctp_ipv6addr_param) ||
6227f8829a4aSRandall Stewart 				    phdr == NULL) {
6228f8829a4aSRandall Stewart 					return (-14);
6229f8829a4aSRandall Stewart 				}
6230f8829a4aSRandall Stewart 				p6 = (struct sctp_ipv6addr_param *)phdr;
6231f8829a4aSRandall Stewart 				memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
6232f8829a4aSRandall Stewart 				    sizeof(p6->addr));
6233d06c82f1SRandall Stewart 				if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) {
6234d06c82f1SRandall Stewart 					/* Skip multi-cast addresses */
6235d06c82f1SRandall Stewart 					goto next_param;
6236d06c82f1SRandall Stewart 				}
6237d06c82f1SRandall Stewart 				if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) {
6238b7b84c0eSMichael Tuexen 					/*
6239b7b84c0eSMichael Tuexen 					 * Link local make no sense without
6240b7b84c0eSMichael Tuexen 					 * scope
6241b7b84c0eSMichael Tuexen 					 */
6242d06c82f1SRandall Stewart 					goto next_param;
6243d06c82f1SRandall Stewart 				}
6244f8829a4aSRandall Stewart 				sa = (struct sockaddr *)&sin6;
6245f8829a4aSRandall Stewart 				inp = stcb->sctp_ep;
624650cec919SRandall Stewart 				atomic_add_int(&stcb->asoc.refcnt, 1);
6247f8829a4aSRandall Stewart 				stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6248b1754ad1SMichael Tuexen 				    dst, stcb);
624950cec919SRandall Stewart 				atomic_add_int(&stcb->asoc.refcnt, -1);
6250a99b6783SRandall Stewart 				if (stcb_tmp == NULL &&
6251a99b6783SRandall Stewart 				    (inp == stcb->sctp_ep || inp == NULL)) {
6252f8829a4aSRandall Stewart 					/*
6253f8829a4aSRandall Stewart 					 * we must validate the state again
6254f8829a4aSRandall Stewart 					 * here
6255f8829a4aSRandall Stewart 					 */
62566d9e8f2bSRandall Stewart 			add_it_now6:
6257f8829a4aSRandall Stewart 					if (stcb->asoc.state == 0) {
6258f8829a4aSRandall Stewart 						/* the assoc was freed? */
6259f8829a4aSRandall Stewart 						return (-16);
6260f8829a4aSRandall Stewart 					}
6261f8829a4aSRandall Stewart 					/*
6262f8829a4aSRandall Stewart 					 * we must add the address, no scope
6263f8829a4aSRandall Stewart 					 * set
6264f8829a4aSRandall Stewart 					 */
6265ec70917fSMichael Tuexen 					if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) {
6266f8829a4aSRandall Stewart 						return (-17);
6267f8829a4aSRandall Stewart 					}
6268f8829a4aSRandall Stewart 				} else if (stcb_tmp == stcb) {
6269f8829a4aSRandall Stewart 					/*
6270f8829a4aSRandall Stewart 					 * we must validate the state again
6271f8829a4aSRandall Stewart 					 * here
6272f8829a4aSRandall Stewart 					 */
6273f8829a4aSRandall Stewart 					if (stcb->asoc.state == 0) {
6274f8829a4aSRandall Stewart 						/* the assoc was freed? */
6275f8829a4aSRandall Stewart 						return (-19);
6276f8829a4aSRandall Stewart 					}
6277f8829a4aSRandall Stewart 					if (net != NULL) {
6278f8829a4aSRandall Stewart 						/* clear flag */
6279f8829a4aSRandall Stewart 						net->dest_state &=
6280f8829a4aSRandall Stewart 						    ~SCTP_ADDR_NOT_IN_ASSOC;
6281f8829a4aSRandall Stewart 					}
6282f8829a4aSRandall Stewart 				} else {
6283f8829a4aSRandall Stewart 					/*
6284f8829a4aSRandall Stewart 					 * strange, address is in another
6285f8829a4aSRandall Stewart 					 * assoc? straighten out locks.
6286f8829a4aSRandall Stewart 					 */
6287267dbe63SMichael Tuexen 					if (stcb_tmp) {
6288839d21d6SMichael Tuexen 						if (SCTP_GET_STATE(stcb_tmp) == SCTP_STATE_COOKIE_WAIT) {
6289267dbe63SMichael Tuexen 							struct mbuf *op_err;
6290267dbe63SMichael Tuexen 							char msg[SCTP_DIAG_INFO_LEN];
6291267dbe63SMichael Tuexen 
6292b7b84c0eSMichael Tuexen 							/*
6293b7b84c0eSMichael Tuexen 							 * in setup state we
6294b7b84c0eSMichael Tuexen 							 * abort this guy
6295b7b84c0eSMichael Tuexen 							 */
6296999f86d6SMichael Tuexen 							SCTP_SNPRINTF(msg, sizeof(msg),
6297821bae7cSMichael Tuexen 							    "%s:%d at %s", __FILE__, __LINE__, __func__);
6298267dbe63SMichael Tuexen 							op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
6299267dbe63SMichael Tuexen 							    msg);
63006d9e8f2bSRandall Stewart 							sctp_abort_an_association(stcb_tmp->sctp_ep,
6301*105b68b4SMichael Tuexen 							    stcb_tmp, op_err, false,
6302267dbe63SMichael Tuexen 							    SCTP_SO_NOT_LOCKED);
63036d9e8f2bSRandall Stewart 							goto add_it_now6;
63046d9e8f2bSRandall Stewart 						}
6305b54d3a6cSRandall Stewart 						SCTP_TCB_UNLOCK(stcb_tmp);
6306267dbe63SMichael Tuexen 					}
6307f8829a4aSRandall Stewart 					if (stcb->asoc.state == 0) {
6308f8829a4aSRandall Stewart 						/* the assoc was freed? */
6309f8829a4aSRandall Stewart 						return (-21);
6310f8829a4aSRandall Stewart 					}
6311f8829a4aSRandall Stewart 					return (-22);
6312f8829a4aSRandall Stewart 				}
6313f8829a4aSRandall Stewart 			}
6314e6194c2eSMichael Tuexen 		} else
6315e6194c2eSMichael Tuexen #endif
6316e6194c2eSMichael Tuexen 		if (ptype == SCTP_ECN_CAPABLE) {
6317c79bec9cSMichael Tuexen 			peer_supports_ecn = 1;
6318f8829a4aSRandall Stewart 		} else if (ptype == SCTP_ULP_ADAPTATION) {
6319f8829a4aSRandall Stewart 			if (stcb->asoc.state != SCTP_STATE_OPEN) {
6320f8829a4aSRandall Stewart 				struct sctp_adaptation_layer_indication ai,
6321f8829a4aSRandall Stewart 				                                *aip;
6322f8829a4aSRandall Stewart 
6323f8829a4aSRandall Stewart 				phdr = sctp_get_next_param(m, offset,
6324f8829a4aSRandall Stewart 				    (struct sctp_paramhdr *)&ai, sizeof(ai));
6325f8829a4aSRandall Stewart 				aip = (struct sctp_adaptation_layer_indication *)phdr;
63266e55db54SRandall Stewart 				if (aip) {
63272afb3e84SRandall Stewart 					stcb->asoc.peers_adaptation = ntohl(aip->indication);
63282afb3e84SRandall Stewart 					stcb->asoc.adaptation_needed = 1;
6329f8829a4aSRandall Stewart 				}
63306e55db54SRandall Stewart 			}
6331f8829a4aSRandall Stewart 		} else if (ptype == SCTP_SET_PRIM_ADDR) {
6332f8829a4aSRandall Stewart 			struct sctp_asconf_addr_param lstore, *fee;
6333f8829a4aSRandall Stewart 			int lptype;
6334f8829a4aSRandall Stewart 			struct sockaddr *lsa = NULL;
6335e6194c2eSMichael Tuexen #ifdef INET
6336e6194c2eSMichael Tuexen 			struct sctp_asconf_addrv4_param *fii;
6337e6194c2eSMichael Tuexen #endif
6338e6194c2eSMichael Tuexen 
6339c79bec9cSMichael Tuexen 			if (stcb->asoc.asconf_supported == 0) {
6340c79bec9cSMichael Tuexen 				return (-100);
6341c79bec9cSMichael Tuexen 			}
6342f8829a4aSRandall Stewart 			if (plen > sizeof(lstore)) {
6343f8829a4aSRandall Stewart 				return (-23);
6344f8829a4aSRandall Stewart 			}
63456088175aSMichael Tuexen 			if (plen < sizeof(struct sctp_asconf_addrv4_param)) {
63466088175aSMichael Tuexen 				return (-101);
63476088175aSMichael Tuexen 			}
6348f8829a4aSRandall Stewart 			phdr = sctp_get_next_param(m, offset,
6349a99b6783SRandall Stewart 			    (struct sctp_paramhdr *)&lstore,
6350f4358911SMichael Tuexen 			    plen);
6351f8829a4aSRandall Stewart 			if (phdr == NULL) {
6352f8829a4aSRandall Stewart 				return (-24);
6353f8829a4aSRandall Stewart 			}
6354f8829a4aSRandall Stewart 			fee = (struct sctp_asconf_addr_param *)phdr;
6355f8829a4aSRandall Stewart 			lptype = ntohs(fee->addrp.ph.param_type);
6356e6194c2eSMichael Tuexen 			switch (lptype) {
6357e6194c2eSMichael Tuexen #ifdef INET
6358e6194c2eSMichael Tuexen 			case SCTP_IPV4_ADDRESS:
6359f8829a4aSRandall Stewart 				if (plen !=
6360f8829a4aSRandall Stewart 				    sizeof(struct sctp_asconf_addrv4_param)) {
6361ad81507eSRandall Stewart 					SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n",
6362f8829a4aSRandall Stewart 					    (int)sizeof(struct sctp_asconf_addrv4_param),
6363f8829a4aSRandall Stewart 					    plen);
6364f8829a4aSRandall Stewart 				} else {
6365f8829a4aSRandall Stewart 					fii = (struct sctp_asconf_addrv4_param *)fee;
6366f8829a4aSRandall Stewart 					sin.sin_addr.s_addr = fii->addrp.addr;
6367f8829a4aSRandall Stewart 					lsa = (struct sockaddr *)&sin;
6368f8829a4aSRandall Stewart 				}
6369e6194c2eSMichael Tuexen 				break;
6370e6194c2eSMichael Tuexen #endif
6371e6194c2eSMichael Tuexen #ifdef INET6
6372e6194c2eSMichael Tuexen 			case SCTP_IPV6_ADDRESS:
6373f8829a4aSRandall Stewart 				if (plen !=
6374f8829a4aSRandall Stewart 				    sizeof(struct sctp_asconf_addr_param)) {
6375ad81507eSRandall Stewart 					SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n",
6376f8829a4aSRandall Stewart 					    (int)sizeof(struct sctp_asconf_addr_param),
6377f8829a4aSRandall Stewart 					    plen);
6378f8829a4aSRandall Stewart 				} else {
6379f8829a4aSRandall Stewart 					memcpy(sin6.sin6_addr.s6_addr,
6380f8829a4aSRandall Stewart 					    fee->addrp.addr,
6381f8829a4aSRandall Stewart 					    sizeof(fee->addrp.addr));
6382f8829a4aSRandall Stewart 					lsa = (struct sockaddr *)&sin6;
6383f8829a4aSRandall Stewart 				}
6384e6194c2eSMichael Tuexen 				break;
6385e6194c2eSMichael Tuexen #endif
6386e6194c2eSMichael Tuexen 			default:
6387e6194c2eSMichael Tuexen 				break;
6388f8829a4aSRandall Stewart 			}
6389f8829a4aSRandall Stewart 			if (lsa) {
6390ad81507eSRandall Stewart 				(void)sctp_set_primary_addr(stcb, sa, NULL);
6391f8829a4aSRandall Stewart 			}
6392830d754dSRandall Stewart 		} else if (ptype == SCTP_HAS_NAT_SUPPORT) {
6393830d754dSRandall Stewart 			stcb->asoc.peer_supports_nat = 1;
6394f8829a4aSRandall Stewart 		} else if (ptype == SCTP_PRSCTP_SUPPORTED) {
6395f8829a4aSRandall Stewart 			/* Peer supports pr-sctp */
6396c79bec9cSMichael Tuexen 			peer_supports_prsctp = 1;
6397f8829a4aSRandall Stewart 		} else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) {
6398f8829a4aSRandall Stewart 			/* A supported extension chunk */
6399f8829a4aSRandall Stewart 			struct sctp_supported_chunk_types_param *pr_supported;
6400f42a358aSRandall Stewart 			uint8_t local_store[SCTP_PARAM_BUFFER_SIZE];
6401f8829a4aSRandall Stewart 			int num_ent, i;
6402f8829a4aSRandall Stewart 
6403f4358911SMichael Tuexen 			if (plen > sizeof(local_store)) {
6404f4358911SMichael Tuexen 				return (-35);
6405f4358911SMichael Tuexen 			}
6406f8829a4aSRandall Stewart 			phdr = sctp_get_next_param(m, offset,
6407f4358911SMichael Tuexen 			    (struct sctp_paramhdr *)&local_store, plen);
6408f8829a4aSRandall Stewart 			if (phdr == NULL) {
6409f8829a4aSRandall Stewart 				return (-25);
6410f8829a4aSRandall Stewart 			}
6411f8829a4aSRandall Stewart 			pr_supported = (struct sctp_supported_chunk_types_param *)phdr;
6412f8829a4aSRandall Stewart 			num_ent = plen - sizeof(struct sctp_paramhdr);
6413f8829a4aSRandall Stewart 			for (i = 0; i < num_ent; i++) {
6414f8829a4aSRandall Stewart 				switch (pr_supported->chunk_types[i]) {
6415f8829a4aSRandall Stewart 				case SCTP_ASCONF:
6416c79bec9cSMichael Tuexen 					peer_supports_asconf = 1;
6417142a4d9eSMichael Tuexen 					break;
6418f8829a4aSRandall Stewart 				case SCTP_ASCONF_ACK:
6419c79bec9cSMichael Tuexen 					peer_supports_asconf_ack = 1;
6420f8829a4aSRandall Stewart 					break;
6421f8829a4aSRandall Stewart 				case SCTP_FORWARD_CUM_TSN:
6422c79bec9cSMichael Tuexen 					peer_supports_prsctp = 1;
6423f8829a4aSRandall Stewart 					break;
6424f8829a4aSRandall Stewart 				case SCTP_PACKET_DROPPED:
6425c79bec9cSMichael Tuexen 					peer_supports_pktdrop = 1;
6426f8829a4aSRandall Stewart 					break;
64278933fa13SRandall Stewart 				case SCTP_NR_SELECTIVE_ACK:
6428c79bec9cSMichael Tuexen 					peer_supports_nrsack = 1;
64298933fa13SRandall Stewart 					break;
6430f8829a4aSRandall Stewart 				case SCTP_STREAM_RESET:
6431c79bec9cSMichael Tuexen 					peer_supports_reconfig = 1;
6432f8829a4aSRandall Stewart 					break;
6433f8829a4aSRandall Stewart 				case SCTP_AUTHENTICATION:
6434c79bec9cSMichael Tuexen 					peer_supports_auth = 1;
6435f8829a4aSRandall Stewart 					break;
643644249214SRandall Stewart 				case SCTP_IDATA:
643744249214SRandall Stewart 					peer_supports_idata = 1;
643844249214SRandall Stewart 					break;
6439f8829a4aSRandall Stewart 				default:
6440f8829a4aSRandall Stewart 					/* one I have not learned yet */
6441f8829a4aSRandall Stewart 					break;
6442f8829a4aSRandall Stewart 				}
6443f8829a4aSRandall Stewart 			}
6444f8829a4aSRandall Stewart 		} else if (ptype == SCTP_RANDOM) {
6445f42a358aSRandall Stewart 			if (plen > sizeof(random_store))
6446f8829a4aSRandall Stewart 				break;
6447f8829a4aSRandall Stewart 			if (got_random) {
6448f8829a4aSRandall Stewart 				/* already processed a RANDOM */
6449f8829a4aSRandall Stewart 				goto next_param;
6450f8829a4aSRandall Stewart 			}
6451f8829a4aSRandall Stewart 			phdr = sctp_get_next_param(m, offset,
6452f42a358aSRandall Stewart 			    (struct sctp_paramhdr *)random_store,
6453f4358911SMichael Tuexen 			    plen);
6454f8829a4aSRandall Stewart 			if (phdr == NULL)
6455f8829a4aSRandall Stewart 				return (-26);
64565e54f665SRandall Stewart 			p_random = (struct sctp_auth_random *)phdr;
64575e54f665SRandall Stewart 			random_len = plen - sizeof(*p_random);
6458f8829a4aSRandall Stewart 			/* enforce the random length */
6459f8829a4aSRandall Stewart 			if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) {
6460ad81507eSRandall Stewart 				SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n");
6461f8829a4aSRandall Stewart 				return (-27);
6462f8829a4aSRandall Stewart 			}
6463f8829a4aSRandall Stewart 			got_random = 1;
6464f8829a4aSRandall Stewart 		} else if (ptype == SCTP_HMAC_LIST) {
646547b80412SMichael Tuexen 			uint16_t num_hmacs;
646647b80412SMichael Tuexen 			uint16_t i;
6467f8829a4aSRandall Stewart 
6468f42a358aSRandall Stewart 			if (plen > sizeof(hmacs_store))
6469f8829a4aSRandall Stewart 				break;
6470f8829a4aSRandall Stewart 			if (got_hmacs) {
6471f8829a4aSRandall Stewart 				/* already processed a HMAC list */
6472f8829a4aSRandall Stewart 				goto next_param;
6473f8829a4aSRandall Stewart 			}
6474f8829a4aSRandall Stewart 			phdr = sctp_get_next_param(m, offset,
6475f42a358aSRandall Stewart 			    (struct sctp_paramhdr *)hmacs_store,
6476f4358911SMichael Tuexen 			    plen);
6477f8829a4aSRandall Stewart 			if (phdr == NULL)
6478f8829a4aSRandall Stewart 				return (-28);
6479f8829a4aSRandall Stewart 			hmacs = (struct sctp_auth_hmac_algo *)phdr;
6480f8829a4aSRandall Stewart 			hmacs_len = plen - sizeof(*hmacs);
6481f8829a4aSRandall Stewart 			num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]);
6482f8829a4aSRandall Stewart 			/* validate the hmac list */
6483f8829a4aSRandall Stewart 			if (sctp_verify_hmac_param(hmacs, num_hmacs)) {
6484f8829a4aSRandall Stewart 				return (-29);
6485f8829a4aSRandall Stewart 			}
6486f8829a4aSRandall Stewart 			if (stcb->asoc.peer_hmacs != NULL)
6487f8829a4aSRandall Stewart 				sctp_free_hmaclist(stcb->asoc.peer_hmacs);
6488f8829a4aSRandall Stewart 			stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs);
6489f8829a4aSRandall Stewart 			if (stcb->asoc.peer_hmacs != NULL) {
6490f8829a4aSRandall Stewart 				for (i = 0; i < num_hmacs; i++) {
64916e55db54SRandall Stewart 					(void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs,
6492f8829a4aSRandall Stewart 					    ntohs(hmacs->hmac_ids[i]));
6493f8829a4aSRandall Stewart 				}
6494f8829a4aSRandall Stewart 			}
6495f8829a4aSRandall Stewart 			got_hmacs = 1;
6496f8829a4aSRandall Stewart 		} else if (ptype == SCTP_CHUNK_LIST) {
6497f8829a4aSRandall Stewart 			int i;
6498f8829a4aSRandall Stewart 
6499f42a358aSRandall Stewart 			if (plen > sizeof(chunks_store))
6500f8829a4aSRandall Stewart 				break;
6501f8829a4aSRandall Stewart 			if (got_chklist) {
6502f8829a4aSRandall Stewart 				/* already processed a Chunks list */
6503f8829a4aSRandall Stewart 				goto next_param;
6504f8829a4aSRandall Stewart 			}
6505f8829a4aSRandall Stewart 			phdr = sctp_get_next_param(m, offset,
6506f42a358aSRandall Stewart 			    (struct sctp_paramhdr *)chunks_store,
6507f4358911SMichael Tuexen 			    plen);
6508f8829a4aSRandall Stewart 			if (phdr == NULL)
6509f8829a4aSRandall Stewart 				return (-30);
6510f8829a4aSRandall Stewart 			chunks = (struct sctp_auth_chunk_list *)phdr;
6511f8829a4aSRandall Stewart 			num_chunks = plen - sizeof(*chunks);
6512f8829a4aSRandall Stewart 			if (stcb->asoc.peer_auth_chunks != NULL)
6513f8829a4aSRandall Stewart 				sctp_clear_chunklist(stcb->asoc.peer_auth_chunks);
6514f8829a4aSRandall Stewart 			else
6515f8829a4aSRandall Stewart 				stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist();
6516f8829a4aSRandall Stewart 			for (i = 0; i < num_chunks; i++) {
65176e55db54SRandall Stewart 				(void)sctp_auth_add_chunk(chunks->chunk_types[i],
6518f8829a4aSRandall Stewart 				    stcb->asoc.peer_auth_chunks);
65192afb3e84SRandall Stewart 				/* record asconf/asconf-ack if listed */
65202afb3e84SRandall Stewart 				if (chunks->chunk_types[i] == SCTP_ASCONF)
65212afb3e84SRandall Stewart 					saw_asconf = 1;
65222afb3e84SRandall Stewart 				if (chunks->chunk_types[i] == SCTP_ASCONF_ACK)
65232afb3e84SRandall Stewart 					saw_asconf_ack = 1;
6524f8829a4aSRandall Stewart 			}
6525f8829a4aSRandall Stewart 			got_chklist = 1;
6526f8829a4aSRandall Stewart 		} else if ((ptype == SCTP_HEARTBEAT_INFO) ||
6527f8829a4aSRandall Stewart 			    (ptype == SCTP_STATE_COOKIE) ||
6528f8829a4aSRandall Stewart 			    (ptype == SCTP_UNRECOG_PARAM) ||
6529f8829a4aSRandall Stewart 			    (ptype == SCTP_COOKIE_PRESERVE) ||
6530f8829a4aSRandall Stewart 			    (ptype == SCTP_SUPPORTED_ADDRTYPE) ||
6531f8829a4aSRandall Stewart 			    (ptype == SCTP_ADD_IP_ADDRESS) ||
6532f8829a4aSRandall Stewart 			    (ptype == SCTP_DEL_IP_ADDRESS) ||
6533f8829a4aSRandall Stewart 			    (ptype == SCTP_ERROR_CAUSE_IND) ||
6534f8829a4aSRandall Stewart 		    (ptype == SCTP_SUCCESS_REPORT)) {
6535fbc6840bSMichael Tuexen 			/* don't care */
6536f8829a4aSRandall Stewart 		} else {
6537f8829a4aSRandall Stewart 			if ((ptype & 0x8000) == 0x0000) {
6538f8829a4aSRandall Stewart 				/*
6539f8829a4aSRandall Stewart 				 * must stop processing the rest of the
6540f8829a4aSRandall Stewart 				 * param's. Any report bits were handled
6541f8829a4aSRandall Stewart 				 * with the call to
6542f8829a4aSRandall Stewart 				 * sctp_arethere_unrecognized_parameters()
6543f8829a4aSRandall Stewart 				 * when the INIT or INIT-ACK was first seen.
6544f8829a4aSRandall Stewart 				 */
6545f8829a4aSRandall Stewart 				break;
6546f8829a4aSRandall Stewart 			}
6547f8829a4aSRandall Stewart 		}
6548a99b6783SRandall Stewart 
6549f8829a4aSRandall Stewart next_param:
6550f8829a4aSRandall Stewart 		offset += SCTP_SIZE32(plen);
6551f8829a4aSRandall Stewart 		if (offset >= limit) {
6552f8829a4aSRandall Stewart 			break;
6553f8829a4aSRandall Stewart 		}
6554f4358911SMichael Tuexen 		phdr = sctp_get_next_param(m, offset, &param_buf,
6555f4358911SMichael Tuexen 		    sizeof(param_buf));
6556f8829a4aSRandall Stewart 	}
6557f8829a4aSRandall Stewart 	/* Now check to see if we need to purge any addresses */
65584a9ef3f8SMichael Tuexen 	TAILQ_FOREACH_SAFE(net, &stcb->asoc.nets, sctp_next, nnet) {
6559f8829a4aSRandall Stewart 		if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) ==
6560f8829a4aSRandall Stewart 		    SCTP_ADDR_NOT_IN_ASSOC) {
6561f8829a4aSRandall Stewart 			/* This address has been removed from the asoc */
6562f8829a4aSRandall Stewart 			/* remove and free it */
6563f8829a4aSRandall Stewart 			stcb->asoc.numnets--;
6564f8829a4aSRandall Stewart 			TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next);
65658b3d0f64SMichael Tuexen 			if (net == stcb->asoc.alternate) {
65668b3d0f64SMichael Tuexen 				sctp_free_remote_addr(stcb->asoc.alternate);
65678b3d0f64SMichael Tuexen 				stcb->asoc.alternate = NULL;
65688b3d0f64SMichael Tuexen 			}
6569f8829a4aSRandall Stewart 			if (net == stcb->asoc.primary_destination) {
6570f8829a4aSRandall Stewart 				stcb->asoc.primary_destination = NULL;
6571f8829a4aSRandall Stewart 				sctp_select_primary_destination(stcb);
6572f8829a4aSRandall Stewart 			}
65738b3d0f64SMichael Tuexen 			sctp_free_remote_addr(net);
6574f8829a4aSRandall Stewart 		}
6575f8829a4aSRandall Stewart 	}
6576c79bec9cSMichael Tuexen 	if ((stcb->asoc.ecn_supported == 1) &&
6577c79bec9cSMichael Tuexen 	    (peer_supports_ecn == 0)) {
6578c79bec9cSMichael Tuexen 		stcb->asoc.ecn_supported = 0;
6579f8829a4aSRandall Stewart 	}
6580c79bec9cSMichael Tuexen 	if ((stcb->asoc.prsctp_supported == 1) &&
6581c79bec9cSMichael Tuexen 	    (peer_supports_prsctp == 0)) {
6582c79bec9cSMichael Tuexen 		stcb->asoc.prsctp_supported = 0;
6583c79bec9cSMichael Tuexen 	}
6584c79bec9cSMichael Tuexen 	if ((stcb->asoc.auth_supported == 1) &&
6585c79bec9cSMichael Tuexen 	    ((peer_supports_auth == 0) ||
6586c79bec9cSMichael Tuexen 	    (got_random == 0) || (got_hmacs == 0))) {
6587c79bec9cSMichael Tuexen 		stcb->asoc.auth_supported = 0;
6588c79bec9cSMichael Tuexen 	}
6589c79bec9cSMichael Tuexen 	if ((stcb->asoc.asconf_supported == 1) &&
6590c79bec9cSMichael Tuexen 	    ((peer_supports_asconf == 0) || (peer_supports_asconf_ack == 0) ||
6591c79bec9cSMichael Tuexen 	    (stcb->asoc.auth_supported == 0) ||
6592c79bec9cSMichael Tuexen 	    (saw_asconf == 0) || (saw_asconf_ack == 0))) {
6593c79bec9cSMichael Tuexen 		stcb->asoc.asconf_supported = 0;
6594c79bec9cSMichael Tuexen 	}
6595c79bec9cSMichael Tuexen 	if ((stcb->asoc.reconfig_supported == 1) &&
6596c79bec9cSMichael Tuexen 	    (peer_supports_reconfig == 0)) {
6597c79bec9cSMichael Tuexen 		stcb->asoc.reconfig_supported = 0;
6598c79bec9cSMichael Tuexen 	}
659944249214SRandall Stewart 	if ((stcb->asoc.idata_supported == 1) &&
660044249214SRandall Stewart 	    (peer_supports_idata == 0)) {
660144249214SRandall Stewart 		stcb->asoc.idata_supported = 0;
660244249214SRandall Stewart 	}
6603c79bec9cSMichael Tuexen 	if ((stcb->asoc.nrsack_supported == 1) &&
6604c79bec9cSMichael Tuexen 	    (peer_supports_nrsack == 0)) {
6605c79bec9cSMichael Tuexen 		stcb->asoc.nrsack_supported = 0;
6606c79bec9cSMichael Tuexen 	}
6607c79bec9cSMichael Tuexen 	if ((stcb->asoc.pktdrop_supported == 1) &&
6608c79bec9cSMichael Tuexen 	    (peer_supports_pktdrop == 0)) {
6609c79bec9cSMichael Tuexen 		stcb->asoc.pktdrop_supported = 0;
6610c79bec9cSMichael Tuexen 	}
6611c79bec9cSMichael Tuexen 	/* validate authentication required parameters */
6612c79bec9cSMichael Tuexen 	if ((peer_supports_auth == 0) && (got_chklist == 1)) {
66135e54f665SRandall Stewart 		/* peer does not support auth but sent a chunks list? */
66145e54f665SRandall Stewart 		return (-31);
66155e54f665SRandall Stewart 	}
6616c79bec9cSMichael Tuexen 	if ((peer_supports_asconf == 1) && (peer_supports_auth == 0)) {
66175e54f665SRandall Stewart 		/* peer supports asconf but not auth? */
66185e54f665SRandall Stewart 		return (-32);
6619c79bec9cSMichael Tuexen 	} else if ((peer_supports_asconf == 1) &&
6620c79bec9cSMichael Tuexen 		    (peer_supports_auth == 1) &&
66212afb3e84SRandall Stewart 	    ((saw_asconf == 0) || (saw_asconf_ack == 0))) {
66222afb3e84SRandall Stewart 		return (-33);
6623f8829a4aSRandall Stewart 	}
6624f8829a4aSRandall Stewart 	/* concatenate the full random key */
6625a99b6783SRandall Stewart 	keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len;
6626a99b6783SRandall Stewart 	if (chunks != NULL) {
6627a99b6783SRandall Stewart 		keylen += sizeof(*chunks) + num_chunks;
6628a99b6783SRandall Stewart 	}
6629f42a358aSRandall Stewart 	new_key = sctp_alloc_key(keylen);
6630f42a358aSRandall Stewart 	if (new_key != NULL) {
6631f42a358aSRandall Stewart 		/* copy in the RANDOM */
66325e54f665SRandall Stewart 		if (p_random != NULL) {
66335e54f665SRandall Stewart 			keylen = sizeof(*p_random) + random_len;
66345ba7f91fSMichael Tuexen 			memcpy(new_key->key, p_random, keylen);
663513500cbbSMichael Tuexen 		} else {
663613500cbbSMichael Tuexen 			keylen = 0;
6637f42a358aSRandall Stewart 		}
6638f8829a4aSRandall Stewart 		/* append in the AUTH chunks */
6639f42a358aSRandall Stewart 		if (chunks != NULL) {
66405ba7f91fSMichael Tuexen 			memcpy(new_key->key + keylen, chunks,
6641f42a358aSRandall Stewart 			    sizeof(*chunks) + num_chunks);
6642f42a358aSRandall Stewart 			keylen += sizeof(*chunks) + num_chunks;
6643f42a358aSRandall Stewart 		}
6644f8829a4aSRandall Stewart 		/* append in the HMACs */
6645f42a358aSRandall Stewart 		if (hmacs != NULL) {
66465ba7f91fSMichael Tuexen 			memcpy(new_key->key + keylen, hmacs,
6647f42a358aSRandall Stewart 			    sizeof(*hmacs) + hmacs_len);
6648f42a358aSRandall Stewart 		}
66495661a9edSMichael Tuexen 	} else {
66505e54f665SRandall Stewart 		/* failed to get memory for the key */
66512afb3e84SRandall Stewart 		return (-34);
6652f8829a4aSRandall Stewart 	}
6653f8829a4aSRandall Stewart 	if (stcb->asoc.authinfo.peer_random != NULL)
6654f8829a4aSRandall Stewart 		sctp_free_key(stcb->asoc.authinfo.peer_random);
6655f8829a4aSRandall Stewart 	stcb->asoc.authinfo.peer_random = new_key;
6656f8829a4aSRandall Stewart 	sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid);
6657f8829a4aSRandall Stewart 	sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid);
6658f8829a4aSRandall Stewart 
6659f8829a4aSRandall Stewart 	return (0);
6660f8829a4aSRandall Stewart }
6661f8829a4aSRandall Stewart 
6662f8829a4aSRandall Stewart int
6663f8829a4aSRandall Stewart sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa,
6664f8829a4aSRandall Stewart     struct sctp_nets *net)
6665f8829a4aSRandall Stewart {
6666f8829a4aSRandall Stewart 	/* make sure the requested primary address exists in the assoc */
6667f8829a4aSRandall Stewart 	if (net == NULL && sa)
6668f8829a4aSRandall Stewart 		net = sctp_findnet(stcb, sa);
6669f8829a4aSRandall Stewart 
6670f8829a4aSRandall Stewart 	if (net == NULL) {
6671f8829a4aSRandall Stewart 		/* didn't find the requested primary address! */
6672f8829a4aSRandall Stewart 		return (-1);
6673f8829a4aSRandall Stewart 	} else {
6674f8829a4aSRandall Stewart 		/* set the primary address */
6675f8829a4aSRandall Stewart 		if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
667642551e99SRandall Stewart 			/* Must be confirmed, so queue to set */
667742551e99SRandall Stewart 			net->dest_state |= SCTP_ADDR_REQ_PRIMARY;
667842551e99SRandall Stewart 			return (0);
6679f8829a4aSRandall Stewart 		}
6680f8829a4aSRandall Stewart 		stcb->asoc.primary_destination = net;
6681ca85e948SMichael Tuexen 		if (!(net->dest_state & SCTP_ADDR_PF) && (stcb->asoc.alternate)) {
6682ca85e948SMichael Tuexen 			sctp_free_remote_addr(stcb->asoc.alternate);
6683ca85e948SMichael Tuexen 			stcb->asoc.alternate = NULL;
6684ca85e948SMichael Tuexen 		}
6685f8829a4aSRandall Stewart 		net = TAILQ_FIRST(&stcb->asoc.nets);
6686f8829a4aSRandall Stewart 		if (net != stcb->asoc.primary_destination) {
6687f8829a4aSRandall Stewart 			/*
6688f8829a4aSRandall Stewart 			 * first one on the list is NOT the primary
6689b1ce21c6SRebecca Cran 			 * sctp_cmpaddr() is much more efficient if the
6690f8829a4aSRandall Stewart 			 * primary is the first on the list, make it so.
6691f8829a4aSRandall Stewart 			 */
6692f8829a4aSRandall Stewart 			TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6693f8829a4aSRandall Stewart 			TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6694f8829a4aSRandall Stewart 		}
6695f8829a4aSRandall Stewart 		return (0);
6696f8829a4aSRandall Stewart 	}
6697f8829a4aSRandall Stewart }
6698f8829a4aSRandall Stewart 
6699f8829a4aSRandall Stewart int
67007215cc1bSMichael Tuexen sctp_is_vtag_good(uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now)
6701f8829a4aSRandall Stewart {
6702f8829a4aSRandall Stewart 	/*
6703f8829a4aSRandall Stewart 	 * This function serves two purposes. It will see if a TAG can be
6704f8829a4aSRandall Stewart 	 * re-used and return 1 for yes it is ok and 0 for don't use that
6705f8829a4aSRandall Stewart 	 * tag. A secondary function it will do is purge out old tags that
6706f8829a4aSRandall Stewart 	 * can be removed.
6707f8829a4aSRandall Stewart 	 */
6708f8829a4aSRandall Stewart 	struct sctpvtaghead *chain;
6709f8829a4aSRandall Stewart 	struct sctp_tagblock *twait_block;
6710830d754dSRandall Stewart 	struct sctpasochead *head;
6711f8829a4aSRandall Stewart 	struct sctp_tcb *stcb;
6712f8829a4aSRandall Stewart 	int i;
6713f8829a4aSRandall Stewart 
6714830d754dSRandall Stewart 	SCTP_INP_INFO_RLOCK();
6715b3f1ea41SRandall Stewart 	head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag,
6716b3f1ea41SRandall Stewart 	    SCTP_BASE_INFO(hashasocmark))];
6717f8829a4aSRandall Stewart 	LIST_FOREACH(stcb, head, sctp_asocs) {
6718f8829a4aSRandall Stewart 		/*
6719830d754dSRandall Stewart 		 * We choose not to lock anything here. TCB's can't be
6720830d754dSRandall Stewart 		 * removed since we have the read lock, so they can't be
6721830d754dSRandall Stewart 		 * freed on us, same thing for the INP. I may be wrong with
6722830d754dSRandall Stewart 		 * this assumption, but we will go with it for now :-)
6723f8829a4aSRandall Stewart 		 */
6724830d754dSRandall Stewart 		if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
6725830d754dSRandall Stewart 			continue;
6726f8829a4aSRandall Stewart 		}
6727830d754dSRandall Stewart 		if (stcb->asoc.my_vtag == tag) {
6728f8829a4aSRandall Stewart 			/* candidate */
6729830d754dSRandall Stewart 			if (stcb->rport != rport) {
6730830d754dSRandall Stewart 				continue;
6731830d754dSRandall Stewart 			}
6732830d754dSRandall Stewart 			if (stcb->sctp_ep->sctp_lport != lport) {
6733830d754dSRandall Stewart 				continue;
6734830d754dSRandall Stewart 			}
6735830d754dSRandall Stewart 			/* Its a used tag set */
6736606c58dbSRandall Stewart 			SCTP_INP_INFO_RUNLOCK();
6737f8829a4aSRandall Stewart 			return (0);
6738f8829a4aSRandall Stewart 		}
6739f8829a4aSRandall Stewart 	}
6740f5366806SMichael Tuexen 	chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
6741f8829a4aSRandall Stewart 	/* Now what about timed wait ? */
674256f778aaSMichael Tuexen 	LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6743f8829a4aSRandall Stewart 		/*
6744f8829a4aSRandall Stewart 		 * Block(s) are present, lets see if we have this tag in the
6745f8829a4aSRandall Stewart 		 * list
6746f8829a4aSRandall Stewart 		 */
6747f8829a4aSRandall Stewart 		for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
6748f8829a4aSRandall Stewart 			if (twait_block->vtag_block[i].v_tag == 0) {
6749f8829a4aSRandall Stewart 				/* not used */
6750f8829a4aSRandall Stewart 				continue;
6751fb8fb8f8SRandall Stewart 			} else if ((long)twait_block->vtag_block[i].tv_sec_at_expire <
6752f8829a4aSRandall Stewart 			    now->tv_sec) {
6753f8829a4aSRandall Stewart 				/* Audit expires this guy */
6754f8829a4aSRandall Stewart 				twait_block->vtag_block[i].tv_sec_at_expire = 0;
6755f8829a4aSRandall Stewart 				twait_block->vtag_block[i].v_tag = 0;
6756a99b6783SRandall Stewart 				twait_block->vtag_block[i].lport = 0;
6757a99b6783SRandall Stewart 				twait_block->vtag_block[i].rport = 0;
6758830d754dSRandall Stewart 			} else if ((twait_block->vtag_block[i].v_tag == tag) &&
6759830d754dSRandall Stewart 				    (twait_block->vtag_block[i].lport == lport) &&
6760830d754dSRandall Stewart 			    (twait_block->vtag_block[i].rport == rport)) {
6761f8829a4aSRandall Stewart 				/* Bad tag, sorry :< */
6762606c58dbSRandall Stewart 				SCTP_INP_INFO_RUNLOCK();
6763f8829a4aSRandall Stewart 				return (0);
6764f8829a4aSRandall Stewart 			}
6765f8829a4aSRandall Stewart 		}
6766f8829a4aSRandall Stewart 	}
6767830d754dSRandall Stewart 	SCTP_INP_INFO_RUNLOCK();
6768f8829a4aSRandall Stewart 	return (1);
6769f8829a4aSRandall Stewart }
6770f8829a4aSRandall Stewart 
6771f8829a4aSRandall Stewart static void
67727215cc1bSMichael Tuexen sctp_drain_mbufs(struct sctp_tcb *stcb)
6773f8829a4aSRandall Stewart {
6774f8829a4aSRandall Stewart 	/*
6775f8829a4aSRandall Stewart 	 * We must hunt this association for MBUF's past the cumack (i.e.
6776f8829a4aSRandall Stewart 	 * out of order data that we can renege on).
6777f8829a4aSRandall Stewart 	 */
6778f8829a4aSRandall Stewart 	struct sctp_association *asoc;
6779f8829a4aSRandall Stewart 	struct sctp_tmit_chunk *chk, *nchk;
6780b5c16493SMichael Tuexen 	uint32_t cumulative_tsn_p1;
678128cd0699SMichael Tuexen 	struct sctp_queued_to_read *control, *ncontrol;
6782b5c16493SMichael Tuexen 	int cnt, strmat;
6783b5c16493SMichael Tuexen 	uint32_t gap, i;
6784b5c16493SMichael Tuexen 	int fnd = 0;
6785f8829a4aSRandall Stewart 
6786f8829a4aSRandall Stewart 	/* We look for anything larger than the cum-ack + 1 */
6787f8829a4aSRandall Stewart 
6788f8829a4aSRandall Stewart 	asoc = &stcb->asoc;
6789f8829a4aSRandall Stewart 	if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) {
6790f8829a4aSRandall Stewart 		/* none we can reneg on. */
6791f8829a4aSRandall Stewart 		return;
6792f8829a4aSRandall Stewart 	}
6793a5d547adSRandall Stewart 	SCTP_STAT_INCR(sctps_protocol_drains_done);
6794f8829a4aSRandall Stewart 	cumulative_tsn_p1 = asoc->cumulative_tsn + 1;
6795f8829a4aSRandall Stewart 	cnt = 0;
6796f8829a4aSRandall Stewart 	/* Ok that was fun, now we will drain all the inbound streams? */
6797f8829a4aSRandall Stewart 	for (strmat = 0; strmat < asoc->streamincnt; strmat++) {
679828cd0699SMichael Tuexen 		TAILQ_FOREACH_SAFE(control, &asoc->strmin[strmat].inqueue, next_instrm, ncontrol) {
6799d1ea5fa9SMichael Tuexen #ifdef INVARIANTS
680028cd0699SMichael Tuexen 			if (control->on_strm_q != SCTP_ON_ORDERED) {
6801d1ea5fa9SMichael Tuexen 				panic("Huh control: %p on_q: %d -- not ordered?",
680228cd0699SMichael Tuexen 				    control, control->on_strm_q);
6803d1ea5fa9SMichael Tuexen 			}
6804d1ea5fa9SMichael Tuexen #endif
680528cd0699SMichael Tuexen 			if (SCTP_TSN_GT(control->sinfo_tsn, cumulative_tsn_p1)) {
6806f8829a4aSRandall Stewart 				/* Yep it is above cum-ack */
6807f8829a4aSRandall Stewart 				cnt++;
680828cd0699SMichael Tuexen 				SCTP_CALC_TSN_TO_GAP(gap, control->sinfo_tsn, asoc->mapping_array_base_tsn);
680928cd0699SMichael Tuexen 				KASSERT(control->length > 0, ("control has zero length"));
681028cd0699SMichael Tuexen 				if (asoc->size_on_all_streams >= control->length) {
681128cd0699SMichael Tuexen 					asoc->size_on_all_streams -= control->length;
681228cd0699SMichael Tuexen 				} else {
6813d1ea5fa9SMichael Tuexen #ifdef INVARIANTS
681428cd0699SMichael Tuexen 					panic("size_on_all_streams = %u smaller than control length %u", asoc->size_on_all_streams, control->length);
681528cd0699SMichael Tuexen #else
681628cd0699SMichael Tuexen 					asoc->size_on_all_streams = 0;
6817d1ea5fa9SMichael Tuexen #endif
681828cd0699SMichael Tuexen 				}
681944249214SRandall Stewart 				sctp_ucount_decr(asoc->cnt_on_all_streams);
682044249214SRandall Stewart 				SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
682128cd0699SMichael Tuexen 				if (control->on_read_q) {
682228cd0699SMichael Tuexen 					TAILQ_REMOVE(&stcb->sctp_ep->read_queue, control, next);
682328cd0699SMichael Tuexen 					control->on_read_q = 0;
6824d1ea5fa9SMichael Tuexen 				}
682528cd0699SMichael Tuexen 				TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, control, next_instrm);
682628cd0699SMichael Tuexen 				control->on_strm_q = 0;
682728cd0699SMichael Tuexen 				if (control->data) {
682828cd0699SMichael Tuexen 					sctp_m_freem(control->data);
682928cd0699SMichael Tuexen 					control->data = NULL;
683044249214SRandall Stewart 				}
683128cd0699SMichael Tuexen 				sctp_free_remote_addr(control->whoFrom);
683244249214SRandall Stewart 				/* Now its reasm? */
683328cd0699SMichael Tuexen 				TAILQ_FOREACH_SAFE(chk, &control->reasm, sctp_next, nchk) {
683444249214SRandall Stewart 					cnt++;
683549656eefSMichael Tuexen 					SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.tsn, asoc->mapping_array_base_tsn);
683628cd0699SMichael Tuexen 					KASSERT(chk->send_size > 0, ("chunk has zero length"));
683728cd0699SMichael Tuexen 					if (asoc->size_on_reasm_queue >= chk->send_size) {
683828cd0699SMichael Tuexen 						asoc->size_on_reasm_queue -= chk->send_size;
683928cd0699SMichael Tuexen 					} else {
684028cd0699SMichael Tuexen #ifdef INVARIANTS
684128cd0699SMichael Tuexen 						panic("size_on_reasm_queue = %u smaller than chunk length %u", asoc->size_on_reasm_queue, chk->send_size);
684228cd0699SMichael Tuexen #else
684328cd0699SMichael Tuexen 						asoc->size_on_reasm_queue = 0;
684428cd0699SMichael Tuexen #endif
684528cd0699SMichael Tuexen 					}
684644249214SRandall Stewart 					sctp_ucount_decr(asoc->cnt_on_reasm_queue);
684744249214SRandall Stewart 					SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
684828cd0699SMichael Tuexen 					TAILQ_REMOVE(&control->reasm, chk, sctp_next);
684944249214SRandall Stewart 					if (chk->data) {
685044249214SRandall Stewart 						sctp_m_freem(chk->data);
685144249214SRandall Stewart 						chk->data = NULL;
685244249214SRandall Stewart 					}
685344249214SRandall Stewart 					sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
685444249214SRandall Stewart 				}
685528cd0699SMichael Tuexen 				sctp_free_a_readq(stcb, control);
685628cd0699SMichael Tuexen 			}
685728cd0699SMichael Tuexen 		}
685828cd0699SMichael Tuexen 		TAILQ_FOREACH_SAFE(control, &asoc->strmin[strmat].uno_inqueue, next_instrm, ncontrol) {
685928cd0699SMichael Tuexen #ifdef INVARIANTS
686028cd0699SMichael Tuexen 			if (control->on_strm_q != SCTP_ON_UNORDERED) {
686128cd0699SMichael Tuexen 				panic("Huh control: %p on_q: %d -- not unordered?",
686228cd0699SMichael Tuexen 				    control, control->on_strm_q);
686328cd0699SMichael Tuexen 			}
686428cd0699SMichael Tuexen #endif
686528cd0699SMichael Tuexen 			if (SCTP_TSN_GT(control->sinfo_tsn, cumulative_tsn_p1)) {
686628cd0699SMichael Tuexen 				/* Yep it is above cum-ack */
686728cd0699SMichael Tuexen 				cnt++;
686828cd0699SMichael Tuexen 				SCTP_CALC_TSN_TO_GAP(gap, control->sinfo_tsn, asoc->mapping_array_base_tsn);
686928cd0699SMichael Tuexen 				KASSERT(control->length > 0, ("control has zero length"));
687028cd0699SMichael Tuexen 				if (asoc->size_on_all_streams >= control->length) {
687128cd0699SMichael Tuexen 					asoc->size_on_all_streams -= control->length;
687228cd0699SMichael Tuexen 				} else {
687328cd0699SMichael Tuexen #ifdef INVARIANTS
687428cd0699SMichael Tuexen 					panic("size_on_all_streams = %u smaller than control length %u", asoc->size_on_all_streams, control->length);
687528cd0699SMichael Tuexen #else
687628cd0699SMichael Tuexen 					asoc->size_on_all_streams = 0;
687728cd0699SMichael Tuexen #endif
687828cd0699SMichael Tuexen 				}
687928cd0699SMichael Tuexen 				sctp_ucount_decr(asoc->cnt_on_all_streams);
688028cd0699SMichael Tuexen 				SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
688128cd0699SMichael Tuexen 				if (control->on_read_q) {
688228cd0699SMichael Tuexen 					TAILQ_REMOVE(&stcb->sctp_ep->read_queue, control, next);
688328cd0699SMichael Tuexen 					control->on_read_q = 0;
688428cd0699SMichael Tuexen 				}
688528cd0699SMichael Tuexen 				TAILQ_REMOVE(&asoc->strmin[strmat].uno_inqueue, control, next_instrm);
688628cd0699SMichael Tuexen 				control->on_strm_q = 0;
688728cd0699SMichael Tuexen 				if (control->data) {
688828cd0699SMichael Tuexen 					sctp_m_freem(control->data);
688928cd0699SMichael Tuexen 					control->data = NULL;
689028cd0699SMichael Tuexen 				}
689128cd0699SMichael Tuexen 				sctp_free_remote_addr(control->whoFrom);
689228cd0699SMichael Tuexen 				/* Now its reasm? */
689328cd0699SMichael Tuexen 				TAILQ_FOREACH_SAFE(chk, &control->reasm, sctp_next, nchk) {
689428cd0699SMichael Tuexen 					cnt++;
689528cd0699SMichael Tuexen 					SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.tsn, asoc->mapping_array_base_tsn);
689628cd0699SMichael Tuexen 					KASSERT(chk->send_size > 0, ("chunk has zero length"));
689728cd0699SMichael Tuexen 					if (asoc->size_on_reasm_queue >= chk->send_size) {
689828cd0699SMichael Tuexen 						asoc->size_on_reasm_queue -= chk->send_size;
689928cd0699SMichael Tuexen 					} else {
690028cd0699SMichael Tuexen #ifdef INVARIANTS
690128cd0699SMichael Tuexen 						panic("size_on_reasm_queue = %u smaller than chunk length %u", asoc->size_on_reasm_queue, chk->send_size);
690228cd0699SMichael Tuexen #else
690328cd0699SMichael Tuexen 						asoc->size_on_reasm_queue = 0;
690428cd0699SMichael Tuexen #endif
690528cd0699SMichael Tuexen 					}
690628cd0699SMichael Tuexen 					sctp_ucount_decr(asoc->cnt_on_reasm_queue);
690728cd0699SMichael Tuexen 					SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
690828cd0699SMichael Tuexen 					TAILQ_REMOVE(&control->reasm, chk, sctp_next);
690928cd0699SMichael Tuexen 					if (chk->data) {
691028cd0699SMichael Tuexen 						sctp_m_freem(chk->data);
691128cd0699SMichael Tuexen 						chk->data = NULL;
691228cd0699SMichael Tuexen 					}
691328cd0699SMichael Tuexen 					sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
691428cd0699SMichael Tuexen 				}
691528cd0699SMichael Tuexen 				sctp_free_a_readq(stcb, control);
6916f8829a4aSRandall Stewart 			}
6917f8829a4aSRandall Stewart 		}
6918f8829a4aSRandall Stewart 	}
6919b5c16493SMichael Tuexen 	if (cnt) {
6920b5c16493SMichael Tuexen 		/* We must back down to see what the new highest is */
692120b07a4dSMichael Tuexen 		for (i = asoc->highest_tsn_inside_map; SCTP_TSN_GE(i, asoc->mapping_array_base_tsn); i--) {
6922b5c16493SMichael Tuexen 			SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn);
6923b5c16493SMichael Tuexen 			if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) {
6924b5c16493SMichael Tuexen 				asoc->highest_tsn_inside_map = i;
6925b5c16493SMichael Tuexen 				fnd = 1;
6926b5c16493SMichael Tuexen 				break;
6927b5c16493SMichael Tuexen 			}
6928b5c16493SMichael Tuexen 		}
6929b5c16493SMichael Tuexen 		if (!fnd) {
6930b5c16493SMichael Tuexen 			asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1;
6931b5c16493SMichael Tuexen 		}
69320053ed28SMichael Tuexen 
6933f8829a4aSRandall Stewart 		/*
6934b5c16493SMichael Tuexen 		 * Question, should we go through the delivery queue? The
6935b5c16493SMichael Tuexen 		 * only reason things are on here is the app not reading OR
6936b5c16493SMichael Tuexen 		 * a p-d-api up. An attacker COULD send enough in to
6937b5c16493SMichael Tuexen 		 * initiate the PD-API and then send a bunch of stuff to
6938b5c16493SMichael Tuexen 		 * other streams... these would wind up on the delivery
6939b5c16493SMichael Tuexen 		 * queue.. and then we would not get to them. But in order
6940b5c16493SMichael Tuexen 		 * to do this I then have to back-track and un-deliver
6941b5c16493SMichael Tuexen 		 * sequence numbers in streams.. el-yucko. I think for now
6942b5c16493SMichael Tuexen 		 * we will NOT look at the delivery queue and leave it to be
6943b5c16493SMichael Tuexen 		 * something to consider later. An alternative would be to
6944b5c16493SMichael Tuexen 		 * abort the P-D-API with a notification and then deliver
6945b5c16493SMichael Tuexen 		 * the data.... Or another method might be to keep track of
6946b5c16493SMichael Tuexen 		 * how many times the situation occurs and if we see a
6947b5c16493SMichael Tuexen 		 * possible attack underway just abort the association.
6948f8829a4aSRandall Stewart 		 */
6949f8829a4aSRandall Stewart #ifdef SCTP_DEBUG
6950ad81507eSRandall Stewart 		SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt);
6951ad81507eSRandall Stewart #endif
6952f8829a4aSRandall Stewart 		/*
6953f8829a4aSRandall Stewart 		 * Now do we need to find a new
6954f8829a4aSRandall Stewart 		 * asoc->highest_tsn_inside_map?
6955f8829a4aSRandall Stewart 		 */
6956f8829a4aSRandall Stewart 		asoc->last_revoke_count = cnt;
69575555400aSMichael Tuexen 		sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL,
69586a34ec63SMichael Tuexen 		    SCTP_FROM_SCTP_PCB + SCTP_LOC_11);
695904ee05e8SRandall Stewart 		/* sa_ignore NO_NULL_CHK */
6960689e6a5fSMichael Tuexen 		sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
6961ceaad40aSRandall Stewart 		sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED);
6962f8829a4aSRandall Stewart 	}
6963f8829a4aSRandall Stewart 	/*
6964f8829a4aSRandall Stewart 	 * Another issue, in un-setting the TSN's in the mapping array we
6965034b88b0SMichael Tuexen 	 * DID NOT adjust the highest_tsn marker.  This will cause one of
6966034b88b0SMichael Tuexen 	 * two things to occur. It may cause us to do extra work in checking
6967034b88b0SMichael Tuexen 	 * for our mapping array movement. More importantly it may cause us
6968034b88b0SMichael Tuexen 	 * to SACK every datagram. This may not be a bad thing though since
6969034b88b0SMichael Tuexen 	 * we will recover once we get our cum-ack above and all this stuff
6970034b88b0SMichael Tuexen 	 * we dumped recovered.
6971f8829a4aSRandall Stewart 	 */
6972f8829a4aSRandall Stewart }
6973f8829a4aSRandall Stewart 
6974f8829a4aSRandall Stewart void
6975f8829a4aSRandall Stewart sctp_drain()
6976f8829a4aSRandall Stewart {
6977f8829a4aSRandall Stewart 	/*
6978f8829a4aSRandall Stewart 	 * We must walk the PCB lists for ALL associations here. The system
6979f8829a4aSRandall Stewart 	 * is LOW on MBUF's and needs help. This is where reneging will
6980f8829a4aSRandall Stewart 	 * occur. We really hope this does NOT happen!
6981f8829a4aSRandall Stewart 	 */
69828518270eSMichael Tuexen 	VNET_ITERATOR_DECL(vnet_iter);
69838518270eSMichael Tuexen 	VNET_LIST_RLOCK_NOSLEEP();
69848518270eSMichael Tuexen 	VNET_FOREACH(vnet_iter) {
69858518270eSMichael Tuexen 		CURVNET_SET(vnet_iter);
6986f8829a4aSRandall Stewart 		struct sctp_inpcb *inp;
6987f8829a4aSRandall Stewart 		struct sctp_tcb *stcb;
6988f8829a4aSRandall Stewart 
69894b6492f5SMichael Tuexen 		SCTP_STAT_INCR(sctps_protocol_drain_calls);
69904b6492f5SMichael Tuexen 		if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
69914b6492f5SMichael Tuexen #ifdef VIMAGE
69924b6492f5SMichael Tuexen 			continue;
69934b6492f5SMichael Tuexen #else
69944b6492f5SMichael Tuexen 			return;
69954b6492f5SMichael Tuexen #endif
69964b6492f5SMichael Tuexen 		}
6997f8829a4aSRandall Stewart 		SCTP_INP_INFO_RLOCK();
6998b3f1ea41SRandall Stewart 		LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
6999f8829a4aSRandall Stewart 			/* For each endpoint */
7000f8829a4aSRandall Stewart 			SCTP_INP_RLOCK(inp);
7001f8829a4aSRandall Stewart 			LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
7002f8829a4aSRandall Stewart 				/* For each association */
7003f8829a4aSRandall Stewart 				SCTP_TCB_LOCK(stcb);
70047215cc1bSMichael Tuexen 				sctp_drain_mbufs(stcb);
7005f8829a4aSRandall Stewart 				SCTP_TCB_UNLOCK(stcb);
7006f8829a4aSRandall Stewart 			}
7007f8829a4aSRandall Stewart 			SCTP_INP_RUNLOCK(inp);
7008f8829a4aSRandall Stewart 		}
7009f8829a4aSRandall Stewart 		SCTP_INP_INFO_RUNLOCK();
70108518270eSMichael Tuexen 		CURVNET_RESTORE();
70118518270eSMichael Tuexen 	}
70128518270eSMichael Tuexen 	VNET_LIST_RUNLOCK_NOSLEEP();
7013f8829a4aSRandall Stewart }
7014f8829a4aSRandall Stewart 
7015f8829a4aSRandall Stewart /*
7016f8829a4aSRandall Stewart  * start a new iterator
7017f8829a4aSRandall Stewart  * iterates through all endpoints and associations based on the pcb_state
7018f8829a4aSRandall Stewart  * flags and asoc_state.  "af" (mandatory) is executed for all matching
7019f8829a4aSRandall Stewart  * assocs and "ef" (optional) is executed when the iterator completes.
7020f8829a4aSRandall Stewart  * "inpf" (optional) is executed for each new endpoint as it is being
7021bff64a4dSRandall Stewart  * iterated through. inpe (optional) is called when the inp completes
7022bff64a4dSRandall Stewart  * its way through all the stcbs.
7023f8829a4aSRandall Stewart  */
7024f8829a4aSRandall Stewart int
702542551e99SRandall Stewart sctp_initiate_iterator(inp_func inpf,
702642551e99SRandall Stewart     asoc_func af,
702742551e99SRandall Stewart     inp_func inpe,
702842551e99SRandall Stewart     uint32_t pcb_state,
702942551e99SRandall Stewart     uint32_t pcb_features,
703042551e99SRandall Stewart     uint32_t asoc_state,
703142551e99SRandall Stewart     void *argp,
703242551e99SRandall Stewart     uint32_t argi,
703342551e99SRandall Stewart     end_func ef,
703442551e99SRandall Stewart     struct sctp_inpcb *s_inp,
703542551e99SRandall Stewart     uint8_t chunk_output_off)
7036f8829a4aSRandall Stewart {
7037f8829a4aSRandall Stewart 	struct sctp_iterator *it = NULL;
7038f8829a4aSRandall Stewart 
7039f8829a4aSRandall Stewart 	if (af == NULL) {
7040f8829a4aSRandall Stewart 		return (-1);
7041f8829a4aSRandall Stewart 	}
70422b1c7de4SMichael Tuexen 	if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
70432b1c7de4SMichael Tuexen 		SCTP_PRINTF("%s: abort on initialize being %d\n", __func__,
70442b1c7de4SMichael Tuexen 		    SCTP_BASE_VAR(sctp_pcb_initialized));
70452b1c7de4SMichael Tuexen 		return (-1);
70462b1c7de4SMichael Tuexen 	}
7047f8829a4aSRandall Stewart 	SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator),
7048207304d4SRandall Stewart 	    SCTP_M_ITER);
7049f8829a4aSRandall Stewart 	if (it == NULL) {
7050c4739e2fSRandall Stewart 		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
70514b66d476SMichael Tuexen 		return (-1);
7052f8829a4aSRandall Stewart 	}
7053f8829a4aSRandall Stewart 	memset(it, 0, sizeof(*it));
7054f8829a4aSRandall Stewart 	it->function_assoc = af;
7055f8829a4aSRandall Stewart 	it->function_inp = inpf;
705642551e99SRandall Stewart 	if (inpf)
705742551e99SRandall Stewart 		it->done_current_ep = 0;
705842551e99SRandall Stewart 	else
705942551e99SRandall Stewart 		it->done_current_ep = 1;
7060f8829a4aSRandall Stewart 	it->function_atend = ef;
7061f8829a4aSRandall Stewart 	it->pointer = argp;
7062f8829a4aSRandall Stewart 	it->val = argi;
7063f8829a4aSRandall Stewart 	it->pcb_flags = pcb_state;
7064f8829a4aSRandall Stewart 	it->pcb_features = pcb_features;
7065f8829a4aSRandall Stewart 	it->asoc_state = asoc_state;
706642551e99SRandall Stewart 	it->function_inp_end = inpe;
7067f8829a4aSRandall Stewart 	it->no_chunk_output = chunk_output_off;
7068f7517433SRandall Stewart 	it->vn = curvnet;
7069f8829a4aSRandall Stewart 	if (s_inp) {
7070ec4c19fcSRandall Stewart 		/* Assume lock is held here */
7071f8829a4aSRandall Stewart 		it->inp = s_inp;
7072ec4c19fcSRandall Stewart 		SCTP_INP_INCR_REF(it->inp);
7073f8829a4aSRandall Stewart 		it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP;
7074f8829a4aSRandall Stewart 	} else {
7075f8829a4aSRandall Stewart 		SCTP_INP_INFO_RLOCK();
7076b3f1ea41SRandall Stewart 		it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead));
7077ec4c19fcSRandall Stewart 		if (it->inp) {
7078ec4c19fcSRandall Stewart 			SCTP_INP_INCR_REF(it->inp);
7079ec4c19fcSRandall Stewart 		}
7080f8829a4aSRandall Stewart 		SCTP_INP_INFO_RUNLOCK();
7081f8829a4aSRandall Stewart 		it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP;
7082f8829a4aSRandall Stewart 	}
708342551e99SRandall Stewart 	SCTP_IPI_ITERATOR_WQ_LOCK();
70842b1c7de4SMichael Tuexen 	if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
70852b1c7de4SMichael Tuexen 		SCTP_IPI_ITERATOR_WQ_UNLOCK();
70862b1c7de4SMichael Tuexen 		SCTP_PRINTF("%s: rollback on initialize being %d it=%p\n", __func__,
70872b1c7de4SMichael Tuexen 		    SCTP_BASE_VAR(sctp_pcb_initialized), it);
70882b1c7de4SMichael Tuexen 		SCTP_FREE(it, SCTP_M_ITER);
70892b1c7de4SMichael Tuexen 		return (-1);
70902b1c7de4SMichael Tuexen 	}
7091f7517433SRandall Stewart 	TAILQ_INSERT_TAIL(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
7092f7517433SRandall Stewart 	if (sctp_it_ctl.iterator_running == 0) {
709342551e99SRandall Stewart 		sctp_wakeup_iterator();
709442551e99SRandall Stewart 	}
709542551e99SRandall Stewart 	SCTP_IPI_ITERATOR_WQ_UNLOCK();
70963c503c28SRandall Stewart 	/* sa_ignore MEMLEAK {memory is put on the tailq for the iterator} */
7097f8829a4aSRandall Stewart 	return (0);
7098f8829a4aSRandall Stewart }
7099