The Tor Browser: netwerk/sctp/src/netinet/sctp_pcb.c@ac0c01689b40 (annotated)

netwerk/sctp/src/netinet/sctp_pcb.c@ac0c01689b40 (annotated)

netwerk/sctp/src/netinet/sctp_pcb.c

Thu, 15 Jan 2015 15:59:08 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 15 Jan 2015 15:59:08 +0100
branch: TOR_BUG_9701
changeset 10: ac0c01689b40
permissions: -rwxr-xr-x

Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

 /*-
  * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
  * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
  * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  * a) Redistributions of source code must retain the above copyright notice,
  *    this list of conditions and the following disclaimer.
  *
  * b) Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in
  *    the documentation and/or other materials provided with the distribution.
  *
  * c) Neither the name of Cisco Systems, Inc. nor the names of its
  *    contributors may be used to endorse or promote products derived
  *    from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  * THE POSSIBILITY OF SUCH DAMAGE.
  */
 #ifdef __FreeBSD__
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD: head/sys/netinet/sctp_pcb.c 258765 2013-11-30 12:51:19Z tuexen $");
 #endif
 #include <netinet/sctp_os.h>
 #ifdef __FreeBSD__
 #include <sys/proc.h>
 #endif
 #include <netinet/sctp_var.h>
 #include <netinet/sctp_sysctl.h>
 #include <netinet/sctp_pcb.h>
 #include <netinet/sctputil.h>
 #include <netinet/sctp.h>
 #include <netinet/sctp_header.h>
 #include <netinet/sctp_asconf.h>
 #include <netinet/sctp_output.h>
 #include <netinet/sctp_timer.h>
 #include <netinet/sctp_bsd_addr.h>
 #if defined(__FreeBSD__) && __FreeBSD_version >= 803000
 #include <netinet/sctp_dtrace_define.h>
 #endif
 #if !defined(__Userspace_os_Windows)
 #include <netinet/udp.h>
 #endif
 #ifdef INET6
 #if defined(__Userspace__)
 #include "user_ip6_var.h"
 #else
 #include <netinet6/ip6_var.h>
 #endif
 #endif
 #if defined(__FreeBSD__)
 #include <sys/sched.h>
 #include <sys/smp.h>
 #include <sys/unistd.h>
 #endif
 #if defined(__Userspace__)
 #include <user_socketvar.h>
 #endif
 #if defined(__APPLE__)
 #define APPLE_FILE_NO 4
 #endif
 #if defined(__FreeBSD__) && __FreeBSD_version >= 801000
 VNET_DEFINE(struct sctp_base_info, system_base_info);
 #else
 struct sctp_base_info system_base_info;
 #endif
 #if defined(__Userspace__)
 #if defined(INET) || defined(INET6)
 struct ifaddrs *g_interfaces;
 #endif
 #endif
 /* FIX: we don't handle multiple link local scopes */
 /* "scopeless" replacement IN6_ARE_ADDR_EQUAL */
 #ifdef INET6
 int
 SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b)
 {
 #ifdef SCTP_EMBEDDED_V6_SCOPE
 #if defined(__APPLE__)
 	struct in6_addr tmp_a, tmp_b;
 	tmp_a = a->sin6_addr;
 #if defined(APPLE_LEOPARD) || defined(APPLE_SNOWLEOPARD)
 	if (in6_embedscope(&tmp_a, a, NULL, NULL) != 0) {
 #else
 	if (in6_embedscope(&tmp_a, a, NULL, NULL, NULL) != 0) {
 #endif
 		return (0);
 	}
 	tmp_b = b->sin6_addr;
 #if defined(APPLE_LEOPARD) || defined(APPLE_SNOWLEOPARD)
 	if (in6_embedscope(&tmp_b, b, NULL, NULL) != 0) {
 #else
 	if (in6_embedscope(&tmp_b, b, NULL, NULL, NULL) != 0) {
 #endif
 		return (0);
 	}
 	return (IN6_ARE_ADDR_EQUAL(&tmp_a, &tmp_b));
 #elif defined(SCTP_KAME)
 	struct sockaddr_in6 tmp_a, tmp_b;
 	memcpy(&tmp_a, a, sizeof(struct sockaddr_in6));
 	if (sa6_embedscope(&tmp_a, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
 		return (0);
 	}
 	memcpy(&tmp_b, b, sizeof(struct sockaddr_in6));
 	if (sa6_embedscope(&tmp_b, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
 		return (0);
 	}
 	return (IN6_ARE_ADDR_EQUAL(&tmp_a.sin6_addr, &tmp_b.sin6_addr));
 #else
 	struct in6_addr tmp_a, tmp_b;
 	tmp_a = a->sin6_addr;
 	if (in6_embedscope(&tmp_a, a) != 0) {
 		return (0);
 	}
 	tmp_b = b->sin6_addr;
 	if (in6_embedscope(&tmp_b, b) != 0) {
 		return (0);
 	}
 	return (IN6_ARE_ADDR_EQUAL(&tmp_a, &tmp_b));
 #endif
 #else
 	return (IN6_ARE_ADDR_EQUAL(&(a->sin6_addr), &(b->sin6_addr)));
 #endif /* SCTP_EMBEDDED_V6_SCOPE */
 }
 #endif
 void
 sctp_fill_pcbinfo(struct sctp_pcbinfo *spcb)
 {
 	/*
 	 * We really don't need to lock this, but I will just because it
 	 * does not hurt.
 	 */
 	SCTP_INP_INFO_RLOCK();
 	spcb->ep_count = SCTP_BASE_INFO(ipi_count_ep);
 	spcb->asoc_count = SCTP_BASE_INFO(ipi_count_asoc);
 	spcb->laddr_count = SCTP_BASE_INFO(ipi_count_laddr);
 	spcb->raddr_count = SCTP_BASE_INFO(ipi_count_raddr);
 	spcb->chk_count = SCTP_BASE_INFO(ipi_count_chunk);
 	spcb->readq_count = SCTP_BASE_INFO(ipi_count_readq);
 	spcb->stream_oque = SCTP_BASE_INFO(ipi_count_strmoq);
 	spcb->free_chunks = SCTP_BASE_INFO(ipi_free_chunks);
 	SCTP_INP_INFO_RUNLOCK();
 }
 /*-
  * Addresses are added to VRF's (Virtual Router's). For BSD we
  * have only the default VRF 0. We maintain a hash list of
  * VRF's. Each VRF has its own list of sctp_ifn's. Each of
  * these has a list of addresses. When we add a new address
  * to a VRF we lookup the ifn/ifn_index, if the ifn does
  * not exist we create it and add it to the list of IFN's
  * within the VRF. Once we have the sctp_ifn, we add the
  * address to the list. So we look something like:
  *
  * hash-vrf-table
  *   vrf-> ifn-> ifn -> ifn
  *   vrf    |
  *    ...   +--ifa-> ifa -> ifa
  *   vrf
  *
  * We keep these separate lists since the SCTP subsystem will
  * point to these from its source address selection nets structure.
  * When an address is deleted it does not happen right away on
  * the SCTP side, it gets scheduled. What we do when a
  * delete happens is immediately remove the address from
  * the master list and decrement the refcount. As our
  * addip iterator works through and frees the src address
  * selection pointing to the sctp_ifa, eventually the refcount
  * will reach 0 and we will delete it. Note that it is assumed
  * that any locking on system level ifn/ifa is done at the
  * caller of these functions and these routines will only
  * lock the SCTP structures as they add or delete things.
  *
  * Other notes on VRF concepts.
  *  - An endpoint can be in multiple VRF's
  *  - An association lives within a VRF and only one VRF.
  *  - Any incoming packet we can deduce the VRF for by
  *    looking at the mbuf/pak inbound (for BSD its VRF=0 :D)
  *  - Any downward send call or connect call must supply the
  *    VRF via ancillary data or via some sort of set default
  *    VRF socket option call (again for BSD no brainer since
  *    the VRF is always 0).
  *  - An endpoint may add multiple VRF's to it.
  *  - Listening sockets can accept associations in any
  *    of the VRF's they are in but the assoc will end up
  *    in only one VRF (gotten from the packet or connect/send).
  *
  */
 struct sctp_vrf *
 sctp_allocate_vrf(int vrf_id)
 {
 	struct sctp_vrf *vrf = NULL;
 	struct sctp_vrflist *bucket;
 	/* First allocate the VRF structure */
 	vrf = sctp_find_vrf(vrf_id);
 	if (vrf) {
 		/* Already allocated */
 		return (vrf);
 	}
 	SCTP_MALLOC(vrf, struct sctp_vrf *, sizeof(struct sctp_vrf),
 		    SCTP_M_VRF);
  	if (vrf == NULL) {
  		/* No memory */
 #ifdef INVARIANTS
 		panic("No memory for VRF:%d", vrf_id);
 #endif
 		return (NULL);
 	}
 	/* setup the VRF */
 	memset(vrf, 0, sizeof(struct sctp_vrf));
 	vrf->vrf_id = vrf_id;
 	LIST_INIT(&vrf->ifnlist);
 	vrf->total_ifa_count = 0;
 	vrf->refcount = 0;
 	/* now also setup table ids */
 	SCTP_INIT_VRF_TABLEID(vrf);
 	/* Init the HASH of addresses */
 	vrf->vrf_addr_hash = SCTP_HASH_INIT(SCTP_VRF_ADDR_HASH_SIZE,
 					    &vrf->vrf_addr_hashmark);
 	if (vrf->vrf_addr_hash == NULL) {
  		/* No memory */
 #ifdef INVARIANTS
 		panic("No memory for VRF:%d", vrf_id);
 #endif
 		SCTP_FREE(vrf, SCTP_M_VRF);
 		return (NULL);
 	}
 	/* Add it to the hash table */
 	bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
 	LIST_INSERT_HEAD(bucket, vrf, next_vrf);
 	atomic_add_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
 	return (vrf);
 }
 struct sctp_ifn *
 sctp_find_ifn(void *ifn, uint32_t ifn_index)
 {
 	struct sctp_ifn *sctp_ifnp;
 	struct sctp_ifnlist *hash_ifn_head;
 	/* We assume the lock is held for the addresses
 	 * if that's wrong problems could occur :-)
 	 */
 	hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
 	LIST_FOREACH(sctp_ifnp, hash_ifn_head, next_bucket) {
 		if (sctp_ifnp->ifn_index == ifn_index) {
 			return (sctp_ifnp);
 		}
 		if (sctp_ifnp->ifn_p && ifn && (sctp_ifnp->ifn_p == ifn)) {
 			return (sctp_ifnp);
 		}
 	}
 	return (NULL);
 }
 struct sctp_vrf *
 sctp_find_vrf(uint32_t vrf_id)
 {
 	struct sctp_vrflist *bucket;
 	struct sctp_vrf *liste;
 	bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
 	LIST_FOREACH(liste, bucket, next_vrf) {
 		if (vrf_id == liste->vrf_id) {
 			return (liste);
 		}
 	}
 	return (NULL);
 }
 void
 sctp_free_vrf(struct sctp_vrf *vrf)
 {
 	if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&vrf->refcount)) {
                 if (vrf->vrf_addr_hash) {
                     SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
                     vrf->vrf_addr_hash = NULL;
                 }
 		/* We zero'd the count */
 		LIST_REMOVE(vrf, next_vrf);
 		SCTP_FREE(vrf, SCTP_M_VRF);
 		atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
 	}
 }
 void
 sctp_free_ifn(struct sctp_ifn *sctp_ifnp)
 {
 	if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifnp->refcount)) {
 		/* We zero'd the count */
 		if (sctp_ifnp->vrf) {
 			sctp_free_vrf(sctp_ifnp->vrf);
 		}
 		SCTP_FREE(sctp_ifnp, SCTP_M_IFN);
 		atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
 	}
 }
 void
 sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu)
 {
 	struct sctp_ifn *sctp_ifnp;
 	sctp_ifnp = sctp_find_ifn((void *)NULL, ifn_index);
 	if (sctp_ifnp != NULL) {
 		sctp_ifnp->ifn_mtu = mtu;
 	}
 }
 void
 sctp_free_ifa(struct sctp_ifa *sctp_ifap)
 {
 	if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifap->refcount)) {
 		/* We zero'd the count */
 		if (sctp_ifap->ifn_p) {
 			sctp_free_ifn(sctp_ifap->ifn_p);
 		}
 		SCTP_FREE(sctp_ifap, SCTP_M_IFA);
 		atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
 	}
 }
 static void
 sctp_delete_ifn(struct sctp_ifn *sctp_ifnp, int hold_addr_lock)
 {
 	struct sctp_ifn *found;
 	found = sctp_find_ifn(sctp_ifnp->ifn_p, sctp_ifnp->ifn_index);
 	if (found == NULL) {
 		/* Not in the list.. sorry */
 		return;
 	}
 	if (hold_addr_lock == 0)
 		SCTP_IPI_ADDR_WLOCK();
 	LIST_REMOVE(sctp_ifnp, next_bucket);
 	LIST_REMOVE(sctp_ifnp, next_ifn);
 	SCTP_DEREGISTER_INTERFACE(sctp_ifnp->ifn_index,
 				  sctp_ifnp->registered_af);
 	if (hold_addr_lock == 0)
 		SCTP_IPI_ADDR_WUNLOCK();
 	/* Take away the reference, and possibly free it */
 	sctp_free_ifn(sctp_ifnp);
 }
 void
 sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr,
 			const char *if_name, uint32_t ifn_index)
 {
 	struct sctp_vrf *vrf;
 	struct sctp_ifa *sctp_ifap;
 	SCTP_IPI_ADDR_RLOCK();
 	vrf = sctp_find_vrf(vrf_id);
 	if (vrf == NULL) {
 		SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
 		goto out;
 	}
 	sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
 	if (sctp_ifap == NULL) {
 		SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
 		goto out;
 	}
 	if (sctp_ifap->ifn_p == NULL) {
 		SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unuseable\n");
 		goto out;
 	}
 	if (if_name) {
 		if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) != 0) {
 			SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
 				sctp_ifap->ifn_p->ifn_name, if_name);
 			goto out;
 		}
 	} else {
 		if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
 			SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
 				sctp_ifap->ifn_p->ifn_index, ifn_index);
 			goto out;
 		}
 	}
 	sctp_ifap->localifa_flags &= (~SCTP_ADDR_VALID);
 	sctp_ifap->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE;
  out:
 	SCTP_IPI_ADDR_RUNLOCK();
 }
 void
 sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr,
 		      const char *if_name, uint32_t ifn_index)
 {
 	struct sctp_vrf *vrf;
 	struct sctp_ifa *sctp_ifap;
 	SCTP_IPI_ADDR_RLOCK();
 	vrf = sctp_find_vrf(vrf_id);
 	if (vrf == NULL) {
 		SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
 		goto out;
 	}
 	sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
 	if (sctp_ifap == NULL) {
 		SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
 		goto out;
 	}
 	if (sctp_ifap->ifn_p == NULL) {
 		SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unuseable\n");
 		goto out;
 	}
 	if (if_name) {
 		if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) != 0) {
 			SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
 				sctp_ifap->ifn_p->ifn_name, if_name);
 			goto out;
 		}
 	} else {
 		if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
 			SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
 				sctp_ifap->ifn_p->ifn_index, ifn_index);
 			goto out;
 		}
 	}
 	sctp_ifap->localifa_flags &= (~SCTP_ADDR_IFA_UNUSEABLE);
 	sctp_ifap->localifa_flags |= SCTP_ADDR_VALID;
  out:
 	SCTP_IPI_ADDR_RUNLOCK();
 }
 /*-
  * Add an ifa to an ifn.
  * Register the interface as necessary.
  * NOTE: ADDR write lock MUST be held.
  */
 static void
 sctp_add_ifa_to_ifn(struct sctp_ifn *sctp_ifnp, struct sctp_ifa *sctp_ifap)
 {
 	int ifa_af;
 	LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
 	sctp_ifap->ifn_p = sctp_ifnp;
 	atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
 	/* update address counts */
 	sctp_ifnp->ifa_count++;
 	ifa_af = sctp_ifap->address.sa.sa_family;
 	switch (ifa_af) {
 #ifdef INET
 	case AF_INET:
 		sctp_ifnp->num_v4++;
 		break;
 #endif
 #ifdef INET6
 	case AF_INET6:
 		sctp_ifnp->num_v6++;
 		break;
 #endif
 	default:
 		break;
 	}
 	if (sctp_ifnp->ifa_count == 1) {
 		/* register the new interface */
 		SCTP_REGISTER_INTERFACE(sctp_ifnp->ifn_index, ifa_af);
 		sctp_ifnp->registered_af = ifa_af;
 	}
 }
 /*-
  * Remove an ifa from its ifn.
  * If no more addresses exist, remove the ifn too. Otherwise, re-register
  * the interface based on the remaining address families left.
  * NOTE: ADDR write lock MUST be held.
  */
 static void
 sctp_remove_ifa_from_ifn(struct sctp_ifa *sctp_ifap)
 {
 	LIST_REMOVE(sctp_ifap, next_ifa);
 	if (sctp_ifap->ifn_p) {
 		/* update address counts */
 		sctp_ifap->ifn_p->ifa_count--;
 		switch (sctp_ifap->address.sa.sa_family) {
 #ifdef INET
 		case AF_INET:
 			sctp_ifap->ifn_p->num_v4--;
 			break;
 #endif
 #ifdef INET6
 		case AF_INET6:
 			sctp_ifap->ifn_p->num_v6--;
 			break;
 #endif
 		default:
 			break;
 		}
 		if (LIST_EMPTY(&sctp_ifap->ifn_p->ifalist)) {
 			/* remove the ifn, possibly freeing it */
 			sctp_delete_ifn(sctp_ifap->ifn_p, SCTP_ADDR_LOCKED);
 		} else {
 			/* re-register address family type, if needed */
 			if ((sctp_ifap->ifn_p->num_v6 == 0) &&
 			    (sctp_ifap->ifn_p->registered_af == AF_INET6)) {
 				SCTP_DEREGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET6);
 				SCTP_REGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET);
 				sctp_ifap->ifn_p->registered_af = AF_INET;
 			} else if ((sctp_ifap->ifn_p->num_v4 == 0) &&
 				   (sctp_ifap->ifn_p->registered_af == AF_INET)) {
 				SCTP_DEREGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET);
 				SCTP_REGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET6);
 				sctp_ifap->ifn_p->registered_af = AF_INET6;
 			}
 			/* free the ifn refcount */
 			sctp_free_ifn(sctp_ifap->ifn_p);
 		}
 		sctp_ifap->ifn_p = NULL;
 	}
 }
 struct sctp_ifa *
 sctp_add_addr_to_vrf(uint32_t vrf_id, void *ifn, uint32_t ifn_index,
 		     uint32_t ifn_type, const char *if_name, void *ifa,
 		     struct sockaddr *addr, uint32_t ifa_flags,
 		     int dynamic_add)
 {
 	struct sctp_vrf *vrf;
 	struct sctp_ifn *sctp_ifnp = NULL;
 	struct sctp_ifa *sctp_ifap = NULL;
 	struct sctp_ifalist *hash_addr_head;
 	struct sctp_ifnlist *hash_ifn_head;
 	uint32_t hash_of_addr;
 	int new_ifn_af = 0;
 #ifdef SCTP_DEBUG
 	SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: adding address: ", vrf_id);
 	SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
 #endif
 	SCTP_IPI_ADDR_WLOCK();
 	sctp_ifnp = sctp_find_ifn(ifn, ifn_index);
 	if (sctp_ifnp) {
 		vrf = sctp_ifnp->vrf;
 	} else {
 		vrf = sctp_find_vrf(vrf_id);
 		if (vrf == NULL) {
 			vrf = sctp_allocate_vrf(vrf_id);
 			if (vrf == NULL) {
 				SCTP_IPI_ADDR_WUNLOCK();
 				return (NULL);
 			}
 		}
 	}
 	if (sctp_ifnp == NULL) {
 		/* build one and add it, can't hold lock
 		 * until after malloc done though.
 		 */
 		SCTP_IPI_ADDR_WUNLOCK();
 		SCTP_MALLOC(sctp_ifnp, struct sctp_ifn *,
 			    sizeof(struct sctp_ifn), SCTP_M_IFN);
 		if (sctp_ifnp == NULL) {
 #ifdef INVARIANTS
 			panic("No memory for IFN");
 #endif
 			return (NULL);
 		}
 		memset(sctp_ifnp, 0, sizeof(struct sctp_ifn));
 		sctp_ifnp->ifn_index = ifn_index;
 		sctp_ifnp->ifn_p = ifn;
 		sctp_ifnp->ifn_type = ifn_type;
 		sctp_ifnp->refcount = 0;
 		sctp_ifnp->vrf = vrf;
 		atomic_add_int(&vrf->refcount, 1);
 		sctp_ifnp->ifn_mtu = SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, addr->sa_family);
 		if (if_name != NULL) {
 			snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", if_name);
 		} else {
 			snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", "unknown");
 		}
 		hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
 		LIST_INIT(&sctp_ifnp->ifalist);
 		SCTP_IPI_ADDR_WLOCK();
 		LIST_INSERT_HEAD(hash_ifn_head, sctp_ifnp, next_bucket);
 		LIST_INSERT_HEAD(&vrf->ifnlist, sctp_ifnp, next_ifn);
 		atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
 		new_ifn_af = 1;
 	}
 	sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
 	if (sctp_ifap) {
 		/* Hmm, it already exists? */
 		if ((sctp_ifap->ifn_p) &&
 		    (sctp_ifap->ifn_p->ifn_index == ifn_index)) {
 			SCTPDBG(SCTP_DEBUG_PCB4, "Using existing ifn %s (0x%x) for ifa %p\n",
 				sctp_ifap->ifn_p->ifn_name, ifn_index,
 				(void *)sctp_ifap);
 			if (new_ifn_af) {
 				/* Remove the created one that we don't want */
 				sctp_delete_ifn(sctp_ifnp, SCTP_ADDR_LOCKED);
 			}
 			if (sctp_ifap->localifa_flags & SCTP_BEING_DELETED) {
 				/* easy to solve, just switch back to active */
 				SCTPDBG(SCTP_DEBUG_PCB4, "Clearing deleted ifa flag\n");
 				sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
 				sctp_ifap->ifn_p = sctp_ifnp;
 				atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
 			}
 		exit_stage_left:
 			SCTP_IPI_ADDR_WUNLOCK();
 			return (sctp_ifap);
 		} else {
 			if (sctp_ifap->ifn_p) {
 				/*
 				 * The last IFN gets the address, remove the
 				 * old one
 				 */
 				SCTPDBG(SCTP_DEBUG_PCB4, "Moving ifa %p from %s (0x%x) to %s (0x%x)\n",
 					(void *)sctp_ifap, sctp_ifap->ifn_p->ifn_name,
 					sctp_ifap->ifn_p->ifn_index, if_name,
 					ifn_index);
 				/* remove the address from the old ifn */
 				sctp_remove_ifa_from_ifn(sctp_ifap);
 				/* move the address over to the new ifn */
 				sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
  				goto exit_stage_left;
 			} else {
 				/* repair ifnp which was NULL ? */
 				sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
 				SCTPDBG(SCTP_DEBUG_PCB4, "Repairing ifn %p for ifa %p\n",
 					(void *)sctp_ifnp, (void *)sctp_ifap);
 				sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
 			}
 			goto exit_stage_left;
 		}
 	}
 	SCTP_IPI_ADDR_WUNLOCK();
 	SCTP_MALLOC(sctp_ifap, struct sctp_ifa *, sizeof(struct sctp_ifa), SCTP_M_IFA);
 	if (sctp_ifap == NULL) {
 #ifdef INVARIANTS
 		panic("No memory for IFA");
 #endif
 		return (NULL);
 	}
 	memset(sctp_ifap, 0, sizeof(struct sctp_ifa));
 	sctp_ifap->ifn_p = sctp_ifnp;
 	atomic_add_int(&sctp_ifnp->refcount, 1);
 	sctp_ifap->vrf_id = vrf_id;
 	sctp_ifap->ifa = ifa;
 #ifdef HAVE_SA_LEN
 	memcpy(&sctp_ifap->address, addr, addr->sa_len);
 #else
 	switch (addr->sa_family) {
 #ifdef INET
 	case AF_INET:
 		memcpy(&sctp_ifap->address, addr, sizeof(struct sockaddr_in));
 		break;
 #endif
 #ifdef INET6
 	case AF_INET6:
 		memcpy(&sctp_ifap->address, addr, sizeof(struct sockaddr_in6));
 		break;
 #endif
 #if defined(__Userspace__)
 	case AF_CONN:
 		memcpy(&sctp_ifap->address, addr, sizeof(struct sockaddr_conn));
 		break;
 #endif
 	default:
 		/* TSNH */
 		break;
 	}
 #endif
 	sctp_ifap->localifa_flags = SCTP_ADDR_VALID | SCTP_ADDR_DEFER_USE;
 	sctp_ifap->flags = ifa_flags;
 	/* Set scope */
 	switch (sctp_ifap->address.sa.sa_family) {
 #ifdef INET
 	case AF_INET:
 	{
 		struct sockaddr_in *sin;
 		sin = (struct sockaddr_in *)&sctp_ifap->address.sin;
 		if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
 		    (IN4_ISLOOPBACK_ADDRESS(&sin->sin_addr))) {
 			sctp_ifap->src_is_loop = 1;
 		}
 		if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
 			sctp_ifap->src_is_priv = 1;
 		}
 		sctp_ifnp->num_v4++;
 		if (new_ifn_af)
 		    new_ifn_af = AF_INET;
 		break;
 	}
 #endif
 #ifdef INET6
 	case AF_INET6:
 	{
 		/* ok to use deprecated addresses? */
 		struct sockaddr_in6 *sin6;
 		sin6 = (struct sockaddr_in6 *)&sctp_ifap->address.sin6;
 		if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
 		    (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))) {
 			sctp_ifap->src_is_loop = 1;
 		}
 		if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
 			sctp_ifap->src_is_priv = 1;
 		}
 		sctp_ifnp->num_v6++;
 		if (new_ifn_af)
 			new_ifn_af = AF_INET6;
 		break;
 	}
 #endif
 #if defined(__Userspace__)
 	case AF_CONN:
 		if (new_ifn_af)
 			new_ifn_af = AF_CONN;
 		break;
 #endif
 	default:
 		new_ifn_af = 0;
 		break;
 	}
 	hash_of_addr = sctp_get_ifa_hash_val(&sctp_ifap->address.sa);
 	if ((sctp_ifap->src_is_priv == 0) &&
 	    (sctp_ifap->src_is_loop == 0)) {
 		sctp_ifap->src_is_glob = 1;
 	}
 	SCTP_IPI_ADDR_WLOCK();
 	hash_addr_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
 	LIST_INSERT_HEAD(hash_addr_head, sctp_ifap, next_bucket);
 	sctp_ifap->refcount = 1;
 	LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
 	sctp_ifnp->ifa_count++;
 	vrf->total_ifa_count++;
 	atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
 	if (new_ifn_af) {
 		SCTP_REGISTER_INTERFACE(ifn_index, new_ifn_af);
 		sctp_ifnp->registered_af = new_ifn_af;
 	}
 	SCTP_IPI_ADDR_WUNLOCK();
 	if (dynamic_add) {
 		/* Bump up the refcount so that when the timer
 		 * completes it will drop back down.
 		 */
 		struct sctp_laddr *wi;
 		atomic_add_int(&sctp_ifap->refcount, 1);
 		wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
 		if (wi == NULL) {
 			/*
 			 * Gak, what can we do? We have lost an address
 			 * change can you say HOSED?
 			 */
 			SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
 			/* Opps, must decrement the count */
 			sctp_del_addr_from_vrf(vrf_id, addr, ifn_index,
 					       if_name);
 			return (NULL);
 		}
 		SCTP_INCR_LADDR_COUNT();
 		bzero(wi, sizeof(*wi));
 		(void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
 		wi->ifa = sctp_ifap;
 		wi->action = SCTP_ADD_IP_ADDRESS;
 		SCTP_WQ_ADDR_LOCK();
 		LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
 		SCTP_WQ_ADDR_UNLOCK();
 		sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
 				 (struct sctp_inpcb *)NULL,
 				 (struct sctp_tcb *)NULL,
 				 (struct sctp_nets *)NULL);
 	} else {
 		/* it's ready for use */
 		sctp_ifap->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
 	}
 	return (sctp_ifap);
 }
 void
 sctp_del_addr_from_vrf(uint32_t vrf_id, struct sockaddr *addr,
 		       uint32_t ifn_index, const char *if_name)
 {
 	struct sctp_vrf *vrf;
 	struct sctp_ifa *sctp_ifap = NULL;
 	SCTP_IPI_ADDR_WLOCK();
 	vrf = sctp_find_vrf(vrf_id);
 	if (vrf == NULL) {
 		SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
 		goto out_now;
 	}
 #ifdef SCTP_DEBUG
 	SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: deleting address:", vrf_id);
 	SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
 #endif
 	sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
 	if (sctp_ifap) {
 		/* Validate the delete */
 		if (sctp_ifap->ifn_p) {
 			int valid = 0;
 			/*-
 			 * The name has priority over the ifn_index
 			 * if its given. We do this especially for
 			 * panda who might recycle indexes fast.
 			 */
 			if (if_name) {
 				if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) == 0) {
 					/* They match its a correct delete */
 					valid = 1;
 				}
 			}
 			if (!valid) {
 				/* last ditch check ifn_index */
 				if (ifn_index == sctp_ifap->ifn_p->ifn_index) {
 					valid = 1;
 				}
 			}
 			if (!valid) {
 				SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s does not match addresses\n",
 					ifn_index, ((if_name == NULL) ? "NULL" : if_name));
 				SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s - ignoring delete\n",
 					sctp_ifap->ifn_p->ifn_index, sctp_ifap->ifn_p->ifn_name);
 				SCTP_IPI_ADDR_WUNLOCK();
 				return;
 			}
 		}
 		SCTPDBG(SCTP_DEBUG_PCB4, "Deleting ifa %p\n", (void *)sctp_ifap);
 		sctp_ifap->localifa_flags &= SCTP_ADDR_VALID;
 		sctp_ifap->localifa_flags |= SCTP_BEING_DELETED;
 		vrf->total_ifa_count--;
 		LIST_REMOVE(sctp_ifap, next_bucket);
 		sctp_remove_ifa_from_ifn(sctp_ifap);
 	}
 #ifdef SCTP_DEBUG
 	else {
 		SCTPDBG(SCTP_DEBUG_PCB4, "Del Addr-ifn:%d Could not find address:",
 			ifn_index);
 		SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
 	}
 #endif
  out_now:
 	SCTP_IPI_ADDR_WUNLOCK();
 	if (sctp_ifap) {
 		struct sctp_laddr *wi;
 		wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
 		if (wi == NULL) {
 			/*
 			 * Gak, what can we do? We have lost an address
 			 * change can you say HOSED?
 			 */
 			SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
 			/* Oops, must decrement the count */
 			sctp_free_ifa(sctp_ifap);
 			return;
 		}
 		SCTP_INCR_LADDR_COUNT();
 		bzero(wi, sizeof(*wi));
 		(void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
 		wi->ifa = sctp_ifap;
 		wi->action = SCTP_DEL_IP_ADDRESS;
 		SCTP_WQ_ADDR_LOCK();
 		/*
 		 * Should this really be a tailq? As it is we will process the
 		 * newest first :-0
 		 */
 		LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
 		SCTP_WQ_ADDR_UNLOCK();
 		sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
 				 (struct sctp_inpcb *)NULL,
 				 (struct sctp_tcb *)NULL,
 				 (struct sctp_nets *)NULL);
 	}
 	return;
 }
 static int
 sctp_does_stcb_own_this_addr(struct sctp_tcb *stcb, struct sockaddr *to)
 {
 	int loopback_scope;
 #if defined(INET)
 	int ipv4_local_scope, ipv4_addr_legal;
 #endif
 #if defined(INET6)
 	int local_scope, site_scope, ipv6_addr_legal;
 #endif
 #if defined(__Userspace__)
 	int conn_addr_legal;
 #endif
 	struct sctp_vrf *vrf;
 	struct sctp_ifn *sctp_ifn;
 	struct sctp_ifa *sctp_ifa;
 	loopback_scope = stcb->asoc.scope.loopback_scope;
 #if defined(INET)
 	ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
 	ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
 #endif
 #if defined(INET6)
 	local_scope = stcb->asoc.scope.local_scope;
 	site_scope = stcb->asoc.scope.site_scope;
 	ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
 #endif
 #if defined(__Userspace__)
 	conn_addr_legal = stcb->asoc.scope.conn_addr_legal;
 #endif
 	SCTP_IPI_ADDR_RLOCK();
 	vrf = sctp_find_vrf(stcb->asoc.vrf_id);
 	if (vrf == NULL) {
 		/* no vrf, no addresses */
 		SCTP_IPI_ADDR_RUNLOCK();
 		return (0);
 	}
 	if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 		LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
 			if ((loopback_scope == 0) &&
 			    SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
 				continue;
 			}
 			LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
 				if (sctp_is_addr_restricted(stcb, sctp_ifa) &&
 				    (!sctp_is_addr_pending(stcb, sctp_ifa))) {
 					/* We allow pending addresses, where we
 					 * have sent an asconf-add to be considered
 					 * valid.
 					 */
 					continue;
 				}
 				if (sctp_ifa->address.sa.sa_family != to->sa_family) {
 					continue;
 				}
 				switch (sctp_ifa->address.sa.sa_family) {
 #ifdef INET
 				case AF_INET:
 					if (ipv4_addr_legal) {
 						struct sockaddr_in *sin, *rsin;
 						sin = &sctp_ifa->address.sin;
 						rsin = (struct sockaddr_in *)to;
 						if ((ipv4_local_scope == 0) &&
 						    IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
 							continue;
 						}
 						if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
 							SCTP_IPI_ADDR_RUNLOCK();
 							return (1);
 						}
 					}
 					break;
 #endif
 #ifdef INET6
 				case AF_INET6:
 					if (ipv6_addr_legal) {
 						struct sockaddr_in6 *sin6, *rsin6;
 #if defined(SCTP_EMBEDDED_V6_SCOPE) && !defined(SCTP_KAME)
 						struct sockaddr_in6 lsa6;
 #endif
 						sin6 = &sctp_ifa->address.sin6;
 						rsin6 = (struct sockaddr_in6 *)to;
 						if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
 							if (local_scope == 0)
 								continue;
 #if defined(SCTP_EMBEDDED_V6_SCOPE)
 							if (sin6->sin6_scope_id == 0) {
 #ifdef SCTP_KAME
 								if (sa6_recoverscope(sin6) != 0)
 									continue;
 #else
 								lsa6 = *sin6;
 								if (in6_recoverscope(&lsa6,
 								                     &lsa6.sin6_addr,
 								                     NULL))
 									continue;
 								sin6 = &lsa6;
 #endif /* SCTP_KAME */
 							}
 #endif /* SCTP_EMBEDDED_V6_SCOPE */
 						}
 						if ((site_scope == 0) &&
 						    (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
 							continue;
 						}
 						if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
 							SCTP_IPI_ADDR_RUNLOCK();
 							return (1);
 						}
 					}
 					break;
 #endif
 #if defined(__Userspace__)
 				case AF_CONN:
 					if (conn_addr_legal) {
 						struct sockaddr_conn *sconn, *rsconn;
 						sconn = &sctp_ifa->address.sconn;
 						rsconn = (struct sockaddr_conn *)to;
 						if (sconn->sconn_addr == rsconn->sconn_addr) {
 							SCTP_IPI_ADDR_RUNLOCK();
 							return (1);
 						}
 					}
 					break;
 #endif
 				default:
 					/* TSNH */
 					break;
 				}
 			}
 		}
 	} else {
 		struct sctp_laddr *laddr;
 		LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
 			if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
 				SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
 				continue;
 			}
 			if (sctp_is_addr_restricted(stcb, laddr->ifa) &&
 			    (!sctp_is_addr_pending(stcb, laddr->ifa))) {
 				/* We allow pending addresses, where we
 				 * have sent an asconf-add to be considered
 				 * valid.
 				 */
 				continue;
 			}
 			if (laddr->ifa->address.sa.sa_family != to->sa_family) {
 				continue;
 			}
 			switch (to->sa_family) {
 #ifdef INET
 			case AF_INET:
 			{
 				struct sockaddr_in *sin, *rsin;
 				sin = (struct sockaddr_in *)&laddr->ifa->address.sin;
 				rsin = (struct sockaddr_in *)to;
 				if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
 					SCTP_IPI_ADDR_RUNLOCK();
 					return (1);
 				}
 				break;
 			}
 #endif
 #ifdef INET6
 			case AF_INET6:
 			{
 				struct sockaddr_in6 *sin6, *rsin6;
 				sin6 = (struct sockaddr_in6 *)&laddr->ifa->address.sin6;
 				rsin6 = (struct sockaddr_in6 *)to;
 				if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
 					SCTP_IPI_ADDR_RUNLOCK();
 					return (1);
 				}
 				break;
 			}
 #endif
 #if defined(__Userspace__)
 			case AF_CONN:
 			{
 				struct sockaddr_conn *sconn, *rsconn;
 				sconn = (struct sockaddr_conn *)&laddr->ifa->address.sconn;
 				rsconn = (struct sockaddr_conn *)to;
 				if (sconn->sconn_addr == rsconn->sconn_addr) {
 					SCTP_IPI_ADDR_RUNLOCK();
 					return (1);
 				}
 				break;
 			}
 #endif
 			default:
 				/* TSNH */
 				break;
 			}
 		}
 	}
 	SCTP_IPI_ADDR_RUNLOCK();
 	return (0);
 }
 static struct sctp_tcb *
 sctp_tcb_special_locate(struct sctp_inpcb **inp_p, struct sockaddr *from,
     struct sockaddr *to, struct sctp_nets **netp, uint32_t vrf_id)
 {
 	/**** ASSUMES THE CALLER holds the INP_INFO_RLOCK */
 	/*
 	 * If we support the TCP model, then we must now dig through to see
 	 * if we can find our endpoint in the list of tcp ep's.
 	 */
 	uint16_t lport, rport;
 	struct sctppcbhead *ephead;
 	struct sctp_inpcb *inp;
 	struct sctp_laddr *laddr;
 	struct sctp_tcb *stcb;
 	struct sctp_nets *net;
 #ifdef SCTP_MVRF
 	int fnd, i;
 #endif
 	if ((to == NULL) || (from == NULL)) {
 		return (NULL);
 	}
 	switch (to->sa_family) {
 #ifdef INET
 	case AF_INET:
 		if (from->sa_family == AF_INET) {
 			lport = ((struct sockaddr_in *)to)->sin_port;
 			rport = ((struct sockaddr_in *)from)->sin_port;
 		} else {
 			return (NULL);
 		}
 		break;
 #endif
 #ifdef INET6
 	case AF_INET6:
 		if (from->sa_family == AF_INET6) {
 			lport = ((struct sockaddr_in6 *)to)->sin6_port;
 			rport = ((struct sockaddr_in6 *)from)->sin6_port;
 		} else {
 			return (NULL);
 		}
 		break;
 #endif
 #if defined(__Userspace__)
 	case AF_CONN:
 		if (from->sa_family == AF_CONN) {
 			lport = ((struct sockaddr_conn *)to)->sconn_port;
 			rport = ((struct sockaddr_conn *)from)->sconn_port;
 		} else {
 			return (NULL);
 		}
 		break;
 #endif
 	default:
 		return (NULL);
 	}
 	ephead = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
 	/*
 	 * Ok now for each of the guys in this bucket we must look and see:
 	 * - Does the remote port match. - Does there single association's
 	 * addresses match this address (to). If so we update p_ep to point
 	 * to this ep and return the tcb from it.
 	 */
 	LIST_FOREACH(inp, ephead, sctp_hash) {
 		SCTP_INP_RLOCK(inp);
 		if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
 			SCTP_INP_RUNLOCK(inp);
 			continue;
 		}
 		if (lport != inp->sctp_lport) {
 			SCTP_INP_RUNLOCK(inp);
 			continue;
 		}
 #ifdef SCTP_MVRF
 		fnd = 0;
 		for (i = 0; i < inp->num_vrfs; i++) {
 			if (inp->m_vrf_ids[i] == vrf_id) {
 				fnd = 1;
 				break;
 			}
 		}
 		if (fnd == 0) {
 			SCTP_INP_RUNLOCK(inp);
 			continue;
 		}
 #else
 		if (inp->def_vrf_id != vrf_id) {
 			SCTP_INP_RUNLOCK(inp);
 			continue;
 		}
 #endif
 		/* check to see if the ep has one of the addresses */
 		if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
 			/* We are NOT bound all, so look further */
 			int match = 0;
 			LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
 				if (laddr->ifa == NULL) {
 					SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n", __FUNCTION__);
 					continue;
 				}
 				if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
 					SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
 					continue;
 				}
 				if (laddr->ifa->address.sa.sa_family ==
 				    to->sa_family) {
 					/* see if it matches */
 #ifdef INET
 					if (from->sa_family == AF_INET) {
 						struct sockaddr_in *intf_addr, *sin;
 						intf_addr = &laddr->ifa->address.sin;
 						sin = (struct sockaddr_in *)to;
 						if (sin->sin_addr.s_addr ==
 						    intf_addr->sin_addr.s_addr) {
 							match = 1;
 							break;
 						}
 					}
 #endif
 #ifdef INET6
 					if (from->sa_family == AF_INET6) {
 						struct sockaddr_in6 *intf_addr6;
 						struct sockaddr_in6 *sin6;
 						sin6 = (struct sockaddr_in6 *)
 						    to;
 						intf_addr6 = &laddr->ifa->address.sin6;
 						if (SCTP6_ARE_ADDR_EQUAL(sin6,
 						    intf_addr6)) {
 							match = 1;
 							break;
 						}
 					}
 #endif
 #if defined(__Userspace__)
 					if (from->sa_family == AF_CONN) {
 						struct sockaddr_conn *intf_addr, *sconn;
 						intf_addr = &laddr->ifa->address.sconn;
 						sconn = (struct sockaddr_conn *)to;
 						if (sconn->sconn_addr ==
 						    intf_addr->sconn_addr) {
 							match = 1;
 							break;
 						}
 					}
 #endif
 				}
 			}
 			if (match == 0) {
 				/* This endpoint does not have this address */
 				SCTP_INP_RUNLOCK(inp);
 				continue;
 			}
 		}
 		/*
 		 * Ok if we hit here the ep has the address, does it hold
 		 * the tcb?
 		 */
 		/* XXX: Why don't we TAILQ_FOREACH through sctp_asoc_list? */
 		stcb = LIST_FIRST(&inp->sctp_asoc_list);
 		if (stcb == NULL) {
 			SCTP_INP_RUNLOCK(inp);
 			continue;
 		}
 		SCTP_TCB_LOCK(stcb);
 		if (!sctp_does_stcb_own_this_addr(stcb, to)) {
 			SCTP_TCB_UNLOCK(stcb);
 			SCTP_INP_RUNLOCK(inp);
 			continue;
 		}
 		if (stcb->rport != rport) {
 			/* remote port does not match. */
 			SCTP_TCB_UNLOCK(stcb);
 			SCTP_INP_RUNLOCK(inp);
 			continue;
 		}
 		if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
 			SCTP_TCB_UNLOCK(stcb);
 			SCTP_INP_RUNLOCK(inp);
 			continue;
 		}
 		if (!sctp_does_stcb_own_this_addr(stcb, to)) {
 			SCTP_TCB_UNLOCK(stcb);
 			SCTP_INP_RUNLOCK(inp);
 			continue;
 		}
 		/* Does this TCB have a matching address? */
 		TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 			if (net->ro._l_addr.sa.sa_family != from->sa_family) {
 				/* not the same family, can't be a match */
 				continue;
 			}
 			switch (from->sa_family) {
 #ifdef INET
 			case AF_INET:
 			{
 				struct sockaddr_in *sin, *rsin;
 				sin = (struct sockaddr_in *)&net->ro._l_addr;
 				rsin = (struct sockaddr_in *)from;
 				if (sin->sin_addr.s_addr ==
 				    rsin->sin_addr.s_addr) {
 					/* found it */
 					if (netp != NULL) {
 						*netp = net;
 					}
 					/* Update the endpoint pointer */
 					*inp_p = inp;
 					SCTP_INP_RUNLOCK(inp);
 					return (stcb);
 				}
 				break;
 			}
 #endif
 #ifdef INET6
 			case AF_INET6:
 			{
 				struct sockaddr_in6 *sin6, *rsin6;
 				sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
 				rsin6 = (struct sockaddr_in6 *)from;
 				if (SCTP6_ARE_ADDR_EQUAL(sin6,
 				    rsin6)) {
 					/* found it */
 					if (netp != NULL) {
 						*netp = net;
 					}
 					/* Update the endpoint pointer */
 					*inp_p = inp;
 					SCTP_INP_RUNLOCK(inp);
 					return (stcb);
 				}
 				break;
 			}
 #endif
 #if defined(__Userspace__)
 			case AF_CONN:
 			{
 				struct sockaddr_conn *sconn, *rsconn;
 				sconn = (struct sockaddr_conn *)&net->ro._l_addr;
 				rsconn = (struct sockaddr_conn *)from;
 				if (sconn->sconn_addr == rsconn->sconn_addr) {
 					/* found it */
 					if (netp != NULL) {
 						*netp = net;
 					}
 					/* Update the endpoint pointer */
 					*inp_p = inp;
 					SCTP_INP_RUNLOCK(inp);
 					return (stcb);
 				}
 				break;
 			}
 #endif
 			default:
 				/* TSNH */
 				break;
 			}
 		}
 		SCTP_TCB_UNLOCK(stcb);
 		SCTP_INP_RUNLOCK(inp);
 	}
 	return (NULL);
 }
 /*
  * rules for use
  *
  * 1) If I return a NULL you must decrement any INP ref cnt. 2) If I find an
  * stcb, both will be locked (locked_tcb and stcb) but decrement will be done
  * (if locked == NULL). 3) Decrement happens on return ONLY if locked ==
  * NULL.
  */
 struct sctp_tcb *
 sctp_findassociation_ep_addr(struct sctp_inpcb **inp_p, struct sockaddr *remote,
     struct sctp_nets **netp, struct sockaddr *local, struct sctp_tcb *locked_tcb)
 {
 	struct sctpasochead *head;
 	struct sctp_inpcb *inp;
 	struct sctp_tcb *stcb = NULL;
 	struct sctp_nets *net;
 	uint16_t rport;
 	inp = *inp_p;
 	switch (remote->sa_family) {
 #ifdef INET
 	case AF_INET:
 		rport = (((struct sockaddr_in *)remote)->sin_port);
 		break;
 #endif
 #ifdef INET6
 	case AF_INET6:
 		rport = (((struct sockaddr_in6 *)remote)->sin6_port);
 		break;
 #endif
 #if defined(__Userspace__)
 	case AF_CONN:
 		rport = (((struct sockaddr_in6 *)remote)->sin6_port);
 		break;
 #endif
 	default:
 		return (NULL);
 	}
 	if (locked_tcb) {
 		/*
 		 * UN-lock so we can do proper locking here this occurs when
 		 * called from load_addresses_from_init.
 		 */
 		atomic_add_int(&locked_tcb->asoc.refcnt, 1);
 		SCTP_TCB_UNLOCK(locked_tcb);
 	}
 	SCTP_INP_INFO_RLOCK();
 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
 	    (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
 		/*-
 		 * Now either this guy is our listener or it's the
 		 * connector. If it is the one that issued the connect, then
 		 * it's only chance is to be the first TCB in the list. If
 		 * it is the acceptor, then do the special_lookup to hash
 		 * and find the real inp.
 		 */
 		if ((inp->sctp_socket) && (inp->sctp_socket->so_qlimit)) {
 			/* to is peer addr, from is my addr */
 #ifndef SCTP_MVRF
 			stcb = sctp_tcb_special_locate(inp_p, remote, local,
 			    netp, inp->def_vrf_id);
 			if ((stcb != NULL) && (locked_tcb == NULL)) {
 				/* we have a locked tcb, lower refcount */
 				SCTP_INP_DECR_REF(inp);
 			}
 			if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
 				SCTP_INP_RLOCK(locked_tcb->sctp_ep);
 				SCTP_TCB_LOCK(locked_tcb);
 				atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
 				SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
 			}
 #else
 			/*-
 			 * MVRF is tricky, we must look in every VRF
 			 * the endpoint has.
 			 */
 			int i;
 			for (i = 0; i < inp->num_vrfs; i++) {
 				stcb = sctp_tcb_special_locate(inp_p, remote, local,
 				                               netp, inp->m_vrf_ids[i]);
 				if ((stcb != NULL) && (locked_tcb == NULL)) {
 					/* we have a locked tcb, lower refcount */
 					SCTP_INP_DECR_REF(inp);
 					break;
 				}
 				if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
 					SCTP_INP_RLOCK(locked_tcb->sctp_ep);
 					SCTP_TCB_LOCK(locked_tcb);
 					atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
 					SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
 					break;
 				}
 			}
 #endif
 			SCTP_INP_INFO_RUNLOCK();
 			return (stcb);
 		} else {
 			SCTP_INP_WLOCK(inp);
 			if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
 				goto null_return;
 			}
 			stcb = LIST_FIRST(&inp->sctp_asoc_list);
 			if (stcb == NULL) {
 				goto null_return;
 			}
 			SCTP_TCB_LOCK(stcb);
 			if (stcb->rport != rport) {
 				/* remote port does not match. */
 				SCTP_TCB_UNLOCK(stcb);
 				goto null_return;
 			}
 			if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
 				SCTP_TCB_UNLOCK(stcb);
 				goto null_return;
 			}
 			if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
 				SCTP_TCB_UNLOCK(stcb);
 				goto null_return;
 			}
 			/* now look at the list of remote addresses */
 			TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 #ifdef INVARIANTS
 				if (net == (TAILQ_NEXT(net, sctp_next))) {
 					panic("Corrupt net list");
 				}
 #endif
 				if (net->ro._l_addr.sa.sa_family !=
 				    remote->sa_family) {
 					/* not the same family */
 					continue;
 				}
 				switch (remote->sa_family) {
 #ifdef INET
 				case AF_INET:
 				{
 					struct sockaddr_in *sin, *rsin;
 					sin = (struct sockaddr_in *)
 					    &net->ro._l_addr;
 					rsin = (struct sockaddr_in *)remote;
 					if (sin->sin_addr.s_addr ==
 					    rsin->sin_addr.s_addr) {
 						/* found it */
 						if (netp != NULL) {
 							*netp = net;
 						}
 						if (locked_tcb == NULL) {
 							SCTP_INP_DECR_REF(inp);
 						} else if (locked_tcb != stcb) {
 							SCTP_TCB_LOCK(locked_tcb);
 						}
 						if (locked_tcb) {
 							atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
 						}
 						SCTP_INP_WUNLOCK(inp);
 						SCTP_INP_INFO_RUNLOCK();
 						return (stcb);
 					}
 					break;
 				}
 #endif
 #ifdef INET6
 				case AF_INET6:
 				{
 					struct sockaddr_in6 *sin6, *rsin6;
 					sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
 					rsin6 = (struct sockaddr_in6 *)remote;
 					if (SCTP6_ARE_ADDR_EQUAL(sin6,
 					    rsin6)) {
 						/* found it */
 						if (netp != NULL) {
 							*netp = net;
 						}
 						if (locked_tcb == NULL) {
 							SCTP_INP_DECR_REF(inp);
 						} else if (locked_tcb != stcb) {
 							SCTP_TCB_LOCK(locked_tcb);
 						}
 						if (locked_tcb) {
 							atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
 						}
 						SCTP_INP_WUNLOCK(inp);
 						SCTP_INP_INFO_RUNLOCK();
 						return (stcb);
 					}
 					break;
 				}
 #endif
 #if defined(__Userspace__)
 				case AF_CONN:
 				{
 					struct sockaddr_conn *sconn, *rsconn;
 					sconn = (struct sockaddr_conn *)&net->ro._l_addr;
 					rsconn = (struct sockaddr_conn *)remote;
 					if (sconn->sconn_addr == rsconn->sconn_addr) {
 						/* found it */
 						if (netp != NULL) {
 							*netp = net;
 						}
 						if (locked_tcb == NULL) {
 							SCTP_INP_DECR_REF(inp);
 						} else if (locked_tcb != stcb) {
 							SCTP_TCB_LOCK(locked_tcb);
 						}
 						if (locked_tcb) {
 							atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
 						}
 						SCTP_INP_WUNLOCK(inp);
 						SCTP_INP_INFO_RUNLOCK();
 						return (stcb);
 					}
 					break;
 				}
 #endif
 				default:
 					/* TSNH */
 					break;
 				}
 			}
 			SCTP_TCB_UNLOCK(stcb);
 		}
 	} else {
 		SCTP_INP_WLOCK(inp);
 		if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
 			goto null_return;
 		}
 		head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport,
 		    inp->sctp_hashmark)];
 		if (head == NULL) {
 			goto null_return;
 		}
 		LIST_FOREACH(stcb, head, sctp_tcbhash) {
 			if (stcb->rport != rport) {
 				/* remote port does not match */
 				continue;
 			}
 			SCTP_TCB_LOCK(stcb);
 			if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
 				SCTP_TCB_UNLOCK(stcb);
 				continue;
 			}
 			if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
 				SCTP_TCB_UNLOCK(stcb);
 				continue;
 			}
 			/* now look at the list of remote addresses */
 			TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 #ifdef INVARIANTS
 				if (net == (TAILQ_NEXT(net, sctp_next))) {
 					panic("Corrupt net list");
 				}
 #endif
 				if (net->ro._l_addr.sa.sa_family !=
 				    remote->sa_family) {
 					/* not the same family */
 					continue;
 				}
 				switch (remote->sa_family) {
 #ifdef INET
 				case AF_INET:
 				{
 					struct sockaddr_in *sin, *rsin;
 					sin = (struct sockaddr_in *)
 					    &net->ro._l_addr;
 					rsin = (struct sockaddr_in *)remote;
 					if (sin->sin_addr.s_addr ==
 					    rsin->sin_addr.s_addr) {
 						/* found it */
 						if (netp != NULL) {
 							*netp = net;
 						}
 						if (locked_tcb == NULL) {
 							SCTP_INP_DECR_REF(inp);
 						} else if (locked_tcb != stcb) {
 							SCTP_TCB_LOCK(locked_tcb);
 						}
 						if (locked_tcb) {
 							atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
 						}
 						SCTP_INP_WUNLOCK(inp);
 						SCTP_INP_INFO_RUNLOCK();
 						return (stcb);
 					}
 					break;
 				}
 #endif
 #ifdef INET6
 				case AF_INET6:
 				{
 					struct sockaddr_in6 *sin6, *rsin6;
 					sin6 = (struct sockaddr_in6 *)
 					    &net->ro._l_addr;
 					rsin6 = (struct sockaddr_in6 *)remote;
 					if (SCTP6_ARE_ADDR_EQUAL(sin6,
 					    rsin6)) {
 						/* found it */
 						if (netp != NULL) {
 							*netp = net;
 						}
 						if (locked_tcb == NULL) {
 							SCTP_INP_DECR_REF(inp);
 						} else if (locked_tcb != stcb) {
 							SCTP_TCB_LOCK(locked_tcb);
 						}
 						if (locked_tcb) {
 							atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
 						}
 						SCTP_INP_WUNLOCK(inp);
 						SCTP_INP_INFO_RUNLOCK();
 						return (stcb);
 					}
 					break;
 				}
 #endif
 #if defined(__Userspace__)
 				case AF_CONN:
 				{
 					struct sockaddr_conn *sconn, *rsconn;
 					sconn = (struct sockaddr_conn *)&net->ro._l_addr;
 					rsconn = (struct sockaddr_conn *)remote;
 					if (sconn->sconn_addr == rsconn->sconn_addr) {
 						/* found it */
 						if (netp != NULL) {
 							*netp = net;
 						}
 						if (locked_tcb == NULL) {
 							SCTP_INP_DECR_REF(inp);
 						} else if (locked_tcb != stcb) {
 							SCTP_TCB_LOCK(locked_tcb);
 						}
 						if (locked_tcb) {
 							atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
 						}
 						SCTP_INP_WUNLOCK(inp);
 						SCTP_INP_INFO_RUNLOCK();
 						return (stcb);
 					}
 					break;
 				}
 #endif
 				default:
 					/* TSNH */
 					break;
 				}
 			}
 			SCTP_TCB_UNLOCK(stcb);
 		}
 	}
 null_return:
 	/* clean up for returning null */
 	if (locked_tcb) {
 		SCTP_TCB_LOCK(locked_tcb);
 		atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
 	}
 	SCTP_INP_WUNLOCK(inp);
 	SCTP_INP_INFO_RUNLOCK();
 	/* not found */
 	return (NULL);
 }
 /*
  * Find an association for a specific endpoint using the association id given
  * out in the COMM_UP notification
  */
 struct sctp_tcb *
 sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
 {
 	/*
 	 * Use my the assoc_id to find a endpoint
 	 */
 	struct sctpasochead *head;
 	struct sctp_tcb *stcb;
 	uint32_t id;
 	if (inp == NULL) {
 		SCTP_PRINTF("TSNH ep_associd\n");
 		return (NULL);
 	}
 	if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
 		SCTP_PRINTF("TSNH ep_associd0\n");
 		return (NULL);
 	}
 	id = (uint32_t)asoc_id;
 	head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
 	if (head == NULL) {
 		/* invalid id TSNH */
 		SCTP_PRINTF("TSNH ep_associd1\n");
 		return (NULL);
 	}
 	LIST_FOREACH(stcb, head, sctp_tcbasocidhash) {
 		if (stcb->asoc.assoc_id == id) {
 			if (inp != stcb->sctp_ep) {
 				/*
 				 * some other guy has the same id active (id
 				 * collision ??).
 				 */
 				SCTP_PRINTF("TSNH ep_associd2\n");
 				continue;
 			}
 			if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
 				continue;
 			}
 			if (want_lock) {
 				SCTP_TCB_LOCK(stcb);
 			}
 			return (stcb);
 		}
 	}
 	return (NULL);
 }
 struct sctp_tcb *
 sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
 {
 	struct sctp_tcb *stcb;
 	SCTP_INP_RLOCK(inp);
 	stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
 	SCTP_INP_RUNLOCK(inp);
 	return (stcb);
 }
 /*
  * Endpoint probe expects that the INP_INFO is locked.
  */
 static struct sctp_inpcb *
 sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head,
 		    uint16_t lport, uint32_t vrf_id)
 {
 	struct sctp_inpcb *inp;
 	struct sctp_laddr *laddr;
 #ifdef INET
 	struct sockaddr_in *sin;
 #endif
 #ifdef INET6
 	struct sockaddr_in6 *sin6;
 	struct sockaddr_in6 *intf_addr6;
 #endif
 #if defined(__Userspace__)
 	struct sockaddr_conn *sconn;
 #endif
 #ifdef SCTP_MVRF
 	int i;
 #endif
 	int  fnd;
 #ifdef INET
 	sin = NULL;
 #endif
 #ifdef INET6
 	sin6 = NULL;
 #endif
 #if defined(__Userspace__)
 	sconn = NULL;
 #endif
 	switch (nam->sa_family) {
 #ifdef INET
 	case AF_INET:
 		sin = (struct sockaddr_in *)nam;
 		break;
 #endif
 #ifdef INET6
 	case AF_INET6:
 		sin6 = (struct sockaddr_in6 *)nam;
 		break;
 #endif
 #if defined(__Userspace__)
 	case AF_CONN:
 		sconn = (struct sockaddr_conn *)nam;
 		break;
 #endif
 	default:
 		/* unsupported family */
 		return (NULL);
 	}
 	if (head == NULL)
 		return (NULL);
 	LIST_FOREACH(inp, head, sctp_hash) {
 		SCTP_INP_RLOCK(inp);
 		if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
 			SCTP_INP_RUNLOCK(inp);
 			continue;
 		}
 		if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) &&
 		    (inp->sctp_lport == lport)) {
 			/* got it */
 #ifdef INET
 			if ((nam->sa_family == AF_INET) &&
 			    (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
 			    SCTP_IPV6_V6ONLY(inp)) {
 				/* IPv4 on a IPv6 socket with ONLY IPv6 set */
 				SCTP_INP_RUNLOCK(inp);
 				continue;
 			}
 #endif
 #ifdef INET6
 			/* A V6 address and the endpoint is NOT bound V6 */
 			if (nam->sa_family == AF_INET6 &&
 			    (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
 				SCTP_INP_RUNLOCK(inp);
 				continue;
 			}
 #endif
 			/* does a VRF id match? */
 			fnd = 0;
 #ifdef SCTP_MVRF
 			for (i = 0; i < inp->num_vrfs; i++) {
 				if (inp->m_vrf_ids[i] == vrf_id) {
 					fnd = 1;
 					break;
 				}
 			}
 #else
 			if (inp->def_vrf_id == vrf_id)
 				fnd = 1;
 #endif
 			SCTP_INP_RUNLOCK(inp);
 			if (!fnd)
 				continue;
 			return (inp);
 		}
 		SCTP_INP_RUNLOCK(inp);
 	}
 	switch (nam->sa_family) {
 #ifdef INET
 	case AF_INET:
 		if (sin->sin_addr.s_addr == INADDR_ANY) {
 			/* Can't hunt for one that has no address specified */
 			return (NULL);
 		}
 		break;
 #endif
 #ifdef INET6
 	case AF_INET6:
 		if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
 			/* Can't hunt for one that has no address specified */
 			return (NULL);
 		}
 		break;
 #endif
 #if defined(__Userspace__)
 	case AF_CONN:
 		if (sconn->sconn_addr == NULL) {
 			return (NULL);
 		}
 		break;
 #endif
 	default:
 		break;
 	}
 	/*
 	 * ok, not bound to all so see if we can find a EP bound to this
 	 * address.
 	 */
 	LIST_FOREACH(inp, head, sctp_hash) {
 		SCTP_INP_RLOCK(inp);
 		if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
 			SCTP_INP_RUNLOCK(inp);
 			continue;
 		}
 		if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
 			SCTP_INP_RUNLOCK(inp);
 			continue;
 		}
 		/*
 		 * Ok this could be a likely candidate, look at all of its
 		 * addresses
 		 */
 		if (inp->sctp_lport != lport) {
 			SCTP_INP_RUNLOCK(inp);
 			continue;
 		}
 		/* does a VRF id match? */
 		fnd = 0;
 #ifdef SCTP_MVRF
 		for (i = 0; i < inp->num_vrfs; i++) {
 			if (inp->m_vrf_ids[i] == vrf_id) {
 				fnd = 1;
 				break;
 			}
 		}
 #else
 		if (inp->def_vrf_id == vrf_id)
 			fnd = 1;
 #endif
 		if (!fnd) {
 			SCTP_INP_RUNLOCK(inp);
 			continue;
 		}
 		LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
 			if (laddr->ifa == NULL) {
 				SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
 					__FUNCTION__);
 				continue;
 			}
 			SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ",
 				(void *)laddr->ifa);
 			if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
 				SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n");
 				continue;
 			}
 			if (laddr->ifa->address.sa.sa_family == nam->sa_family) {
 				/* possible, see if it matches */
 				switch (nam->sa_family) {
 #ifdef INET
 				case AF_INET:
 #if defined(__APPLE__)
 					if (sin == NULL) {
 						/* TSNH */
 						break;
 					}
 #endif
 					if (sin->sin_addr.s_addr ==
 					    laddr->ifa->address.sin.sin_addr.s_addr) {
 						SCTP_INP_RUNLOCK(inp);
 						return (inp);
 					}
 					break;
 #endif
 #ifdef INET6
 				case AF_INET6:
 					intf_addr6 = &laddr->ifa->address.sin6;
 					if (SCTP6_ARE_ADDR_EQUAL(sin6,
 					    intf_addr6)) {
 						SCTP_INP_RUNLOCK(inp);
 						return (inp);
 					}
 					break;
 #endif
 #if defined(__Userspace__)
 				case AF_CONN:
 					if (sconn->sconn_addr == laddr->ifa->address.sconn.sconn_addr) {
 						SCTP_INP_RUNLOCK(inp);
 						return (inp);
 					}
 					break;
 #endif
 				}
 			}
 		}
 		SCTP_INP_RUNLOCK(inp);
 	}
 	return (NULL);
 }
 static struct sctp_inpcb *
 sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
 {
 	struct sctppcbhead *head;
 	struct sctp_inpcb *t_inp;
 #ifdef SCTP_MVRF
 	int i;
 #endif
 	int fnd;
 	head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
 	    SCTP_BASE_INFO(hashmark))];
 	LIST_FOREACH(t_inp, head, sctp_hash) {
 		if (t_inp->sctp_lport != lport) {
 			continue;
 		}
 		/* is it in the VRF in question */
 		fnd = 0;
 #ifdef SCTP_MVRF
 		for (i = 0; i < inp->num_vrfs; i++) {
 			if (t_inp->m_vrf_ids[i] == vrf_id) {
 				fnd = 1;
 				break;
 			}
 		}
 #else
 		if (t_inp->def_vrf_id == vrf_id)
 			fnd = 1;
 #endif
 		if (!fnd)
 			continue;
 		/* This one is in use. */
 		/* check the v6/v4 binding issue */
 		if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
 		    SCTP_IPV6_V6ONLY(t_inp)) {
 			if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
 				/* collision in V6 space */
 				return (t_inp);
 			} else {
 				/* inp is BOUND_V4 no conflict */
 				continue;
 			}
 		} else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
 			/* t_inp is bound v4 and v6, conflict always */
 			return (t_inp);
 		} else {
 			/* t_inp is bound only V4 */
 			if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
 			    SCTP_IPV6_V6ONLY(inp)) {
 				/* no conflict */
 				continue;
 			}
 			/* else fall through to conflict */
 		}
 		return (t_inp);
 	}
 	return (NULL);
 }
 int
 sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
 {
 	/* For 1-2-1 with port reuse */
 	struct sctppcbhead *head;
 	struct sctp_inpcb *tinp;
 	if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
 		/* only works with port reuse on */
 		return (-1);
 	}
 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) {
 		return (0);
 	}
 	SCTP_INP_RUNLOCK(inp);
 	head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport,
 	                                    SCTP_BASE_INFO(hashmark))];
 	/* Kick out all non-listeners to the TCP hash */
 	LIST_FOREACH(tinp, head, sctp_hash) {
 		if (tinp->sctp_lport != inp->sctp_lport) {
 			continue;
 		}
 		if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
 			continue;
 		}
 		if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
 			continue;
 		}
 		if (tinp->sctp_socket->so_qlimit) {
 			continue;
 		}
 		SCTP_INP_WLOCK(tinp);
 		LIST_REMOVE(tinp, sctp_hash);
 		head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))];
 		tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
 		LIST_INSERT_HEAD(head, tinp, sctp_hash);
 		SCTP_INP_WUNLOCK(tinp);
 	}
 	SCTP_INP_WLOCK(inp);
 	/* Pull from where he was */
 	LIST_REMOVE(inp, sctp_hash);
 	inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL;
 	head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))];
 	LIST_INSERT_HEAD(head, inp, sctp_hash);
 	SCTP_INP_WUNLOCK(inp);
 	SCTP_INP_RLOCK(inp);
 	return (0);
 }
 struct sctp_inpcb *
 sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock,
 		uint32_t vrf_id)
 {
 	/*
 	 * First we check the hash table to see if someone has this port
 	 * bound with just the port.
 	 */
 	struct sctp_inpcb *inp;
 	struct sctppcbhead *head;
 	int lport;
 	unsigned int i;
 #ifdef INET
 	struct sockaddr_in *sin;
 #endif
 #ifdef INET6
 	struct sockaddr_in6 *sin6;
 #endif
 #if defined(__Userspace__)
 	struct sockaddr_conn *sconn;
 #endif
 	switch (nam->sa_family) {
 #ifdef INET
 	case AF_INET:
 		sin = (struct sockaddr_in *)nam;
 		lport = sin->sin_port;
 		break;
 #endif
 #ifdef INET6
 	case AF_INET6:
 		sin6 = (struct sockaddr_in6 *)nam;
 		lport = sin6->sin6_port;
 		break;
 #endif
 #if defined(__Userspace__)
 	case AF_CONN:
 		sconn = (struct sockaddr_conn *)nam;
 		lport = sconn->sconn_port;
 		break;
 #endif
 	default:
 		return (NULL);
 	}
 	/*
 	 * I could cheat here and just cast to one of the types but we will
 	 * do it right. It also provides the check against an Unsupported
 	 * type too.
 	 */
 	/* Find the head of the ALLADDR chain */
 	if (have_lock == 0) {
 		SCTP_INP_INFO_RLOCK();
 	}
 	head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
 	    SCTP_BASE_INFO(hashmark))];
 	inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
 	/*
 	 * If the TCP model exists it could be that the main listening
 	 * endpoint is gone but there still exists a connected socket for this
 	 * guy. If so we can return the first one that we find. This may NOT
 	 * be the correct one so the caller should be wary on the returned INP.
 	 * Currently the only caller that sets find_tcp_pool is in bindx where
 	 * we are verifying that a user CAN bind the address. He either
 	 * has bound it already, or someone else has, or its open to bind,
 	 * so this is good enough.
 	 */
 	if (inp == NULL && find_tcp_pool) {
 		for (i = 0; i < SCTP_BASE_INFO(hashtcpmark) + 1; i++) {
 			head = &SCTP_BASE_INFO(sctp_tcpephash)[i];
 			inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
 			if (inp) {
 				break;
 			}
 		}
 	}
 	if (inp) {
 		SCTP_INP_INCR_REF(inp);
 	}
 	if (have_lock == 0) {
 		SCTP_INP_INFO_RUNLOCK();
 	}
 	return (inp);
 }
 /*
  * Find an association for an endpoint with the pointer to whom you want to
  * send to and the endpoint pointer. The address can be IPv4 or IPv6. We may
  * need to change the *to to some other struct like a mbuf...
  */
 struct sctp_tcb *
 sctp_findassociation_addr_sa(struct sockaddr *from, struct sockaddr *to,
     struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool,
     uint32_t vrf_id)
 {
 	struct sctp_inpcb *inp = NULL;
 	struct sctp_tcb *stcb;
 	SCTP_INP_INFO_RLOCK();
 	if (find_tcp_pool) {
 		if (inp_p != NULL) {
 			stcb = sctp_tcb_special_locate(inp_p, from, to, netp,
 			                               vrf_id);
 		} else {
 			stcb = sctp_tcb_special_locate(&inp, from, to, netp,
 			                               vrf_id);
 		}
 		if (stcb != NULL) {
 			SCTP_INP_INFO_RUNLOCK();
 			return (stcb);
 		}
 	}
 	inp = sctp_pcb_findep(to, 0, 1, vrf_id);
 	if (inp_p != NULL) {
 		*inp_p = inp;
 	}
 	SCTP_INP_INFO_RUNLOCK();
 	if (inp == NULL) {
 		return (NULL);
 	}
 	/*
 	 * ok, we have an endpoint, now lets find the assoc for it (if any)
 	 * we now place the source address or from in the to of the find
 	 * endpoint call. Since in reality this chain is used from the
 	 * inbound packet side.
 	 */
 	if (inp_p != NULL) {
 		stcb = sctp_findassociation_ep_addr(inp_p, from, netp, to,
 		                                    NULL);
 	} else {
 		stcb = sctp_findassociation_ep_addr(&inp, from, netp, to,
 		                                    NULL);
 	}
 	return (stcb);
 }
 /*
  * This routine will grub through the mbuf that is a INIT or INIT-ACK and
  * find all addresses that the sender has specified in any address list. Each
  * address will be used to lookup the TCB and see if one exits.
  */
 static struct sctp_tcb *
 sctp_findassociation_special_addr(struct mbuf *m, int offset,
     struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp,
     struct sockaddr *dst)
 {
 	struct sctp_paramhdr *phdr, parm_buf;
 #if defined(INET) || defined(INET6)
 	struct sctp_tcb *stcb;
 	uint16_t ptype;
 #endif
 	uint16_t plen;
 #ifdef INET
 	struct sockaddr_in sin4;
 #endif
 #ifdef INET6
 	struct sockaddr_in6 sin6;
 #endif
 #ifdef INET
 	memset(&sin4, 0, sizeof(sin4));
 #ifdef HAVE_SIN_LEN
 	sin4.sin_len = sizeof(sin4);
 #endif
 	sin4.sin_family = AF_INET;
 	sin4.sin_port = sh->src_port;
 #endif
 #ifdef INET6
 	memset(&sin6, 0, sizeof(sin6));
 #ifdef HAVE_SIN6_LEN
 	sin6.sin6_len = sizeof(sin6);
 #endif
 	sin6.sin6_family = AF_INET6;
 	sin6.sin6_port = sh->src_port;
 #endif
 	offset += sizeof(struct sctp_init_chunk);
 	phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
 	while (phdr != NULL) {
 		/* now we must see if we want the parameter */
 #if defined(INET) || defined(INET6)
 		ptype = ntohs(phdr->param_type);
 #endif
 		plen = ntohs(phdr->param_length);
 		if (plen == 0) {
 			break;
 		}
 #ifdef INET
 		if (ptype == SCTP_IPV4_ADDRESS &&
 		    plen == sizeof(struct sctp_ipv4addr_param)) {
 			/* Get the rest of the address */
 			struct sctp_ipv4addr_param ip4_parm, *p4;
 			phdr = sctp_get_next_param(m, offset,
 			    (struct sctp_paramhdr *)&ip4_parm, min(plen, sizeof(ip4_parm)));
 			if (phdr == NULL) {
 				return (NULL);
 			}
 			p4 = (struct sctp_ipv4addr_param *)phdr;
 			memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr));
 			/* look it up */
 			stcb = sctp_findassociation_ep_addr(inp_p,
 			    (struct sockaddr *)&sin4, netp, dst, NULL);
 			if (stcb != NULL) {
 				return (stcb);
 			}
 		}
 #endif
 #ifdef INET6
 		if (ptype == SCTP_IPV6_ADDRESS &&
 		    plen == sizeof(struct sctp_ipv6addr_param)) {
 			/* Get the rest of the address */
 			struct sctp_ipv6addr_param ip6_parm, *p6;
 			phdr = sctp_get_next_param(m, offset,
 			    (struct sctp_paramhdr *)&ip6_parm, min(plen,sizeof(ip6_parm)));
 			if (phdr == NULL) {
 				return (NULL);
 			}
 			p6 = (struct sctp_ipv6addr_param *)phdr;
 			memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr));
 			/* look it up */
 			stcb = sctp_findassociation_ep_addr(inp_p,
 			    (struct sockaddr *)&sin6, netp, dst, NULL);
 			if (stcb != NULL) {
 				return (stcb);
 			}
 		}
 #endif
 		offset += SCTP_SIZE32(plen);
 		phdr = sctp_get_next_param(m, offset, &parm_buf,
 					   sizeof(parm_buf));
 	}
 	return (NULL);
 }
 static struct sctp_tcb *
 sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag,
 		       struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport,
 		       uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
 {
 	/*
 	 * Use my vtag to hash. If we find it we then verify the source addr
 	 * is in the assoc. If all goes well we save a bit on rec of a
 	 * packet.
 	 */
 	struct sctpasochead *head;
 	struct sctp_nets *net;
 	struct sctp_tcb *stcb;
 #ifdef SCTP_MVRF
 	unsigned int i;
 #endif
 	SCTP_INP_INFO_RLOCK();
 	head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag,
 	    SCTP_BASE_INFO(hashasocmark))];
 	if (head == NULL) {
 		/* invalid vtag */
 		SCTP_INP_INFO_RUNLOCK();
 		return (NULL);
 	}
 	LIST_FOREACH(stcb, head, sctp_asocs) {
 		SCTP_INP_RLOCK(stcb->sctp_ep);
 		if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
 			SCTP_INP_RUNLOCK(stcb->sctp_ep);
 			continue;
 		}
 #ifdef SCTP_MVRF
 		for (i = 0; i < stcb->sctp_ep->num_vrfs; i++) {
 			if (stcb->sctp_ep->m_vrf_ids[i] == vrf_id) {
 				break;
 			}
 		}
 		if (i == stcb->sctp_ep->num_vrfs) {
 			SCTP_INP_RUNLOCK(inp);
 			continue;
 		}
 #else
 		if (stcb->sctp_ep->def_vrf_id != vrf_id) {
 			SCTP_INP_RUNLOCK(stcb->sctp_ep);
 			continue;
 		}
 #endif
 		SCTP_TCB_LOCK(stcb);
 		SCTP_INP_RUNLOCK(stcb->sctp_ep);
 		if (stcb->asoc.my_vtag == vtag) {
 			/* candidate */
 			if (stcb->rport != rport) {
 				SCTP_TCB_UNLOCK(stcb);
 				continue;
 			}
 			if (stcb->sctp_ep->sctp_lport != lport) {
 				SCTP_TCB_UNLOCK(stcb);
 				continue;
 			}
 			if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
 				SCTP_TCB_UNLOCK(stcb);
 				continue;
 			}
 			/* RRS:Need toaddr check here */
 			if (sctp_does_stcb_own_this_addr(stcb, to) == 0) {
 			        /* Endpoint does not own this address */
 				SCTP_TCB_UNLOCK(stcb);
 				continue;
 			}
 			if (remote_tag) {
 				/* If we have both vtags that's all we match on */
 				if (stcb->asoc.peer_vtag == remote_tag) {
 					/* If both tags match we consider it conclusive
 					 * and check NO source/destination addresses
 					 */
 					goto conclusive;
 				}
 			}
 			if (skip_src_check) {
 			conclusive:
 			        if (from) {
 					*netp = sctp_findnet(stcb, from);
 				} else {
 					*netp = NULL;	/* unknown */
 				}
 				if (inp_p)
 					*inp_p = stcb->sctp_ep;
 				SCTP_INP_INFO_RUNLOCK();
 				return (stcb);
 			}
 			net = sctp_findnet(stcb, from);
 			if (net) {
 				/* yep its him. */
 				*netp = net;
 				SCTP_STAT_INCR(sctps_vtagexpress);
 				*inp_p = stcb->sctp_ep;
 				SCTP_INP_INFO_RUNLOCK();
 				return (stcb);
 			} else {
 				/*
 				 * not him, this should only happen in rare
 				 * cases so I peg it.
 				 */
 				SCTP_STAT_INCR(sctps_vtagbogus);
 			}
 		}
 		SCTP_TCB_UNLOCK(stcb);
 	}
 	SCTP_INP_INFO_RUNLOCK();
 	return (NULL);
 }
 /*
  * Find an association with the pointer to the inbound IP packet. This can be
  * a IPv4 or IPv6 packet.
  */
 struct sctp_tcb *
 sctp_findassociation_addr(struct mbuf *m, int offset,
     struct sockaddr *src, struct sockaddr *dst,
     struct sctphdr *sh, struct sctp_chunkhdr *ch,
     struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
 {
 	int find_tcp_pool;
 	struct sctp_tcb *stcb;
 	struct sctp_inpcb *inp;
 	if (sh->v_tag) {
 		/* we only go down this path if vtag is non-zero */
 		stcb = sctp_findassoc_by_vtag(src, dst, ntohl(sh->v_tag),
 		                              inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0);
 		if (stcb) {
 			return (stcb);
 		}
 	}
 	find_tcp_pool = 0;
 	if ((ch->chunk_type != SCTP_INITIATION) &&
 	    (ch->chunk_type != SCTP_INITIATION_ACK) &&
 	    (ch->chunk_type != SCTP_COOKIE_ACK) &&
 	    (ch->chunk_type != SCTP_COOKIE_ECHO)) {
 		/* Other chunk types go to the tcp pool. */
 		find_tcp_pool = 1;
 	}
 	if (inp_p) {
 		stcb = sctp_findassociation_addr_sa(src, dst, inp_p, netp,
 		                                    find_tcp_pool, vrf_id);
 		inp = *inp_p;
 	} else {
 		stcb = sctp_findassociation_addr_sa(src, dst, &inp, netp,
 		                                    find_tcp_pool, vrf_id);
 	}
 	SCTPDBG(SCTP_DEBUG_PCB1, "stcb:%p inp:%p\n", (void *)stcb, (void *)inp);
 	if (stcb == NULL && inp) {
 		/* Found a EP but not this address */
 		if ((ch->chunk_type == SCTP_INITIATION) ||
 		    (ch->chunk_type == SCTP_INITIATION_ACK)) {
 			/*-
 			 * special hook, we do NOT return linp or an
 			 * association that is linked to an existing
 			 * association that is under the TCP pool (i.e. no
 			 * listener exists). The endpoint finding routine
 			 * will always find a listener before examining the
 			 * TCP pool.
 			 */
 			if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
 				if (inp_p) {
 					*inp_p = NULL;
 				}
 				return (NULL);
 			}
 			stcb = sctp_findassociation_special_addr(m,
 			    offset, sh, &inp, netp, dst);
 			if (inp_p != NULL) {
 				*inp_p = inp;
 			}
 		}
 	}
 	SCTPDBG(SCTP_DEBUG_PCB1, "stcb is %p\n", (void *)stcb);
 	return (stcb);
 }
 /*
  * lookup an association by an ASCONF lookup address.
  * if the lookup address is 0.0.0.0 or ::0, use the vtag to do the lookup
  */
 struct sctp_tcb *
 sctp_findassociation_ep_asconf(struct mbuf *m, int offset,
 			       struct sockaddr *dst, struct sctphdr *sh,
                                struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
 {
 	struct sctp_tcb *stcb;
 	struct sockaddr_storage remote_store;
 	struct sctp_paramhdr parm_buf, *phdr;
 	int ptype;
 	int zero_address = 0;
 #ifdef INET
 	struct sockaddr_in *sin;
 #endif
 #ifdef INET6
 	struct sockaddr_in6 *sin6;
 #endif
 	memset(&remote_store, 0, sizeof(remote_store));
 	phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk),
 				   &parm_buf, sizeof(struct sctp_paramhdr));
 	if (phdr == NULL) {
 		SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n",
 			__FUNCTION__);
 		return NULL;
 	}
 	ptype = (int)((uint32_t) ntohs(phdr->param_type));
 	/* get the correlation address */
 	switch (ptype) {
 #ifdef INET6
 	case SCTP_IPV6_ADDRESS:
 	{
 		/* ipv6 address param */
 		struct sctp_ipv6addr_param *p6, p6_buf;
 		if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) {
 			return NULL;
 		}
 		p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m,
 								       offset + sizeof(struct sctp_asconf_chunk),
 								       &p6_buf.ph, sizeof(*p6));
 		if (p6 == NULL) {
 			SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n",
 				__FUNCTION__);
 			return (NULL);
 		}
 		sin6 = (struct sockaddr_in6 *)&remote_store;
 		sin6->sin6_family = AF_INET6;
 #ifdef HAVE_SIN6_LEN
 		sin6->sin6_len = sizeof(*sin6);
 #endif
 		sin6->sin6_port = sh->src_port;
 		memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr));
 		if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
 			zero_address = 1;
 		break;
 	}
 #endif
 #ifdef INET
 	case SCTP_IPV4_ADDRESS:
 	{
 		/* ipv4 address param */
 		struct sctp_ipv4addr_param *p4, p4_buf;
 		if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) {
 			return NULL;
 		}
 		p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m,
 								       offset + sizeof(struct sctp_asconf_chunk),
 								       &p4_buf.ph, sizeof(*p4));
 		if (p4 == NULL) {
 			SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n",
 				__FUNCTION__);
 			return (NULL);
 		}
 		sin = (struct sockaddr_in *)&remote_store;
 		sin->sin_family = AF_INET;
 #ifdef HAVE_SIN_LEN
 		sin->sin_len = sizeof(*sin);
 #endif
 		sin->sin_port = sh->src_port;
 		memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr));
 		if (sin->sin_addr.s_addr == INADDR_ANY)
 			zero_address = 1;
 		break;
 	}
 #endif
 	default:
 		/* invalid address param type */
 		return NULL;
 	}
 	if (zero_address) {
 	        stcb = sctp_findassoc_by_vtag(NULL, dst, ntohl(sh->v_tag), inp_p,
 					      netp, sh->src_port, sh->dest_port, 1, vrf_id, 0);
 		if (stcb != NULL) {
 			SCTP_INP_DECR_REF(*inp_p);
 		}
 	} else {
 		stcb = sctp_findassociation_ep_addr(inp_p,
 		    (struct sockaddr *)&remote_store, netp,
 		    dst, NULL);
 	}
 	return (stcb);
 }
 /*
  * allocate a sctp_inpcb and setup a temporary binding to a port/all
  * addresses. This way if we don't get a bind we by default pick a ephemeral
  * port with all addresses bound.
  */
 int
 sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
 {
 	/*
 	 * we get called when a new endpoint starts up. We need to allocate
 	 * the sctp_inpcb structure from the zone and init it. Mark it as
 	 * unbound and find a port that we can use as an ephemeral with
 	 * INADDR_ANY. If the user binds later no problem we can then add in
 	 * the specific addresses. And setup the default parameters for the
 	 * EP.
 	 */
 	int i, error;
 	struct sctp_inpcb *inp;
 	struct sctp_pcb *m;
 	struct timeval time;
 	sctp_sharedkey_t *null_key;
 	error = 0;
 	SCTP_INP_INFO_WLOCK();
 	inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb);
 	if (inp == NULL) {
 		SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n");
 		SCTP_INP_INFO_WUNLOCK();
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
 		return (ENOBUFS);
 	}
 	/* zap it */
 	bzero(inp, sizeof(*inp));
 	/* bump generations */
 #if defined(__APPLE__)
 	inp->ip_inp.inp.inp_state = INPCB_STATE_INUSE;
 #endif
 	/* setup socket pointers */
 	inp->sctp_socket = so;
 	inp->ip_inp.inp.inp_socket = so;
 #ifdef INET6
 #if !defined(__Userspace__) && !defined(__Windows__)
 	if (INP_SOCKAF(so) == AF_INET6) {
 		if (MODULE_GLOBAL(ip6_auto_flowlabel)) {
 			inp->ip_inp.inp.inp_flags |= IN6P_AUTOFLOWLABEL;
 		}
 		if (MODULE_GLOBAL(ip6_v6only)) {
 			inp->ip_inp.inp.inp_flags |= IN6P_IPV6_V6ONLY;
 		}
 	}
 #endif
 #endif
 	inp->sctp_associd_counter = 1;
 	inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT;
 	inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
 	inp->sctp_cmt_on_off = SCTP_BASE_SYSCTL(sctp_cmt_on_off);
 	inp->sctp_ecn_enable = SCTP_BASE_SYSCTL(sctp_ecn_enable);
 #if defined(__Userspace__)
 	inp->ulp_info = NULL;
 	inp->recv_callback = NULL;
 	inp->send_callback = NULL;
 	inp->send_sb_threshold = 0;
 #endif
 	/* init the small hash table we use to track asocid <-> tcb */
 	inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark);
 	if (inp->sctp_asocidhash == NULL) {
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
 		SCTP_INP_INFO_WUNLOCK();
 		return (ENOBUFS);
 	}
 #ifdef IPSEC
 #if !(defined(__APPLE__))
 	{
 		struct inpcbpolicy *pcb_sp = NULL;
 		error = ipsec_init_policy(so, &pcb_sp);
 		/* Arrange to share the policy */
 		inp->ip_inp.inp.inp_sp = pcb_sp;
 		((struct in6pcb *)(&inp->ip_inp.inp))->in6p_sp = pcb_sp;
 	}
 #else
 	/* not sure what to do for openbsd here */
 	error = 0;
 #endif
 	if (error != 0) {
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
 		SCTP_INP_INFO_WUNLOCK();
 		return error;
 	}
 #endif				/* IPSEC */
 	SCTP_INCR_EP_COUNT();
 	inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
 	SCTP_INP_INFO_WUNLOCK();
 	so->so_pcb = (caddr_t)inp;
 #if defined(__FreeBSD__) && __FreeBSD_version < 803000
 	if ((SCTP_SO_TYPE(so) == SOCK_DGRAM) ||
 	    (SCTP_SO_TYPE(so) == SOCK_SEQPACKET)) {
 #else
 	if (SCTP_SO_TYPE(so) == SOCK_SEQPACKET) {
 #endif
 		/* UDP style socket */
 		inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
 		    SCTP_PCB_FLAGS_UNBOUND);
 		/* Be sure it is NON-BLOCKING IO for UDP */
 		/* SCTP_SET_SO_NBIO(so); */
 	} else if (SCTP_SO_TYPE(so) == SOCK_STREAM) {
 		/* TCP style socket */
 		inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
 		    SCTP_PCB_FLAGS_UNBOUND);
 		/* Be sure we have blocking IO by default */
 		SCTP_CLEAR_SO_NBIO(so);
 #if defined(__Panda__)
 	} else if (SCTP_SO_TYPE(so) == SOCK_FASTSEQPACKET) {
 		inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
 		    SCTP_PCB_FLAGS_UNBOUND);
 		sctp_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE);
 	} else if (SCTP_SO_TYPE(so) == SOCK_FASTSTREAM) {
 		inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
 		    SCTP_PCB_FLAGS_UNBOUND);
 		sctp_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE);
 #endif
 	} else {
 		/*
 		 * unsupported socket type (RAW, etc)- in case we missed it
 		 * in protosw
 		 */
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
 		so->so_pcb = NULL;
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
 		return (EOPNOTSUPP);
 	}
 	if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) {
 		sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
 		sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
 	} else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) {
 		sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
 		sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
 	} else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) {
 		sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
 		sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
 	}
 	inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize),
 					   &inp->sctp_hashmark);
 	if (inp->sctp_tcbhash == NULL) {
 		SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
 		so->so_pcb = NULL;
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
 		return (ENOBUFS);
 	}
 #ifdef SCTP_MVRF
 	inp->vrf_size = SCTP_DEFAULT_VRF_SIZE;
 	SCTP_MALLOC(inp->m_vrf_ids, uint32_t *,
 		    (sizeof(uint32_t) * inp->vrf_size), SCTP_M_MVRF);
 	if (inp->m_vrf_ids == NULL) {
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
 		so->so_pcb = NULL;
 		SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
 		return (ENOBUFS);
 	}
 	inp->m_vrf_ids[0] = vrf_id;
 	inp->num_vrfs = 1;
 #endif
 	inp->def_vrf_id = vrf_id;
 #if defined(__APPLE__)
 #if defined(APPLE_LEOPARD) || defined(APPLE_SNOWLEOPARD)
 	inp->ip_inp.inp.inpcb_mtx = lck_mtx_alloc_init(SCTP_BASE_INFO(sctbinfo).mtx_grp, SCTP_BASE_INFO(sctbinfo).mtx_attr);
 	if (inp->ip_inp.inp.inpcb_mtx == NULL) {
 		SCTP_PRINTF("in_pcballoc: can't alloc mutex! so=%p\n", (void *)so);
 #ifdef SCTP_MVRF
 		SCTP_FREE(inp->m_vrf_ids, SCTP_M_MVRF);
 #endif
 		SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
 		so->so_pcb = NULL;
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
 		SCTP_UNLOCK_EXC(SCTP_BASE_INFO(sctbinfo).ipi_lock);
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
 		return (ENOMEM);
 	}
 #elif defined(APPLE_LION) || defined(APPLE_MOUNTAINLION)
 	lck_mtx_init(&inp->ip_inp.inp.inpcb_mtx, SCTP_BASE_INFO(sctbinfo).mtx_grp, SCTP_BASE_INFO(sctbinfo).mtx_attr);
 #else
 	lck_mtx_init(&inp->ip_inp.inp.inpcb_mtx, SCTP_BASE_INFO(sctbinfo).ipi_lock_grp, SCTP_BASE_INFO(sctbinfo).ipi_lock_attr);
 #endif
 #endif
 	SCTP_INP_INFO_WLOCK();
 	SCTP_INP_LOCK_INIT(inp);
 #if defined(__FreeBSD__)
 	INP_LOCK_INIT(&inp->ip_inp.inp, "inp", "sctpinp");
 #endif
 	SCTP_INP_READ_INIT(inp);
 	SCTP_ASOC_CREATE_LOCK_INIT(inp);
 	/* lock the new ep */
 	SCTP_INP_WLOCK(inp);
 	/* add it to the info area */
 	LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list);
 #if defined(__APPLE__)
 	inp->ip_inp.inp.inp_pcbinfo = &SCTP_BASE_INFO(sctbinfo);
 #if defined(APPLE_LEOPARD) || defined(APPLE_SNOWLEOPARD) || defined(APPLE_LION) || defined(APPLE_MOUNTAINLION)
 	LIST_INSERT_HEAD(SCTP_BASE_INFO(sctbinfo).listhead, &inp->ip_inp.inp, inp_list);
 #else
 	LIST_INSERT_HEAD(SCTP_BASE_INFO(sctbinfo).ipi_listhead, &inp->ip_inp.inp, inp_list);
 #endif
 #endif
 	SCTP_INP_INFO_WUNLOCK();
 	TAILQ_INIT(&inp->read_queue);
 	LIST_INIT(&inp->sctp_addr_list);
 	LIST_INIT(&inp->sctp_asoc_list);
 #ifdef SCTP_TRACK_FREED_ASOCS
 	/* TEMP CODE */
 	LIST_INIT(&inp->sctp_asoc_free_list);
 #endif
 	/* Init the timer structure for signature change */
 	SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer);
 	inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE;
 	/* now init the actual endpoint default data */
 	m = &inp->sctp_ep;
 	/* setup the base timeout information */
 	m->sctp_timeoutticks[SCTP_TIMER_SEND] = SEC_TO_TICKS(SCTP_SEND_SEC);	/* needed ? */
 	m->sctp_timeoutticks[SCTP_TIMER_INIT] = SEC_TO_TICKS(SCTP_INIT_SEC);	/* needed ? */
 	m->sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default));
 	m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default));
 	m->sctp_timeoutticks[SCTP_TIMER_PMTU] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default));
 	m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default));
 	m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default));
 	/* all max/min max are in ms */
 	m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default);
 	m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default);
 	m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default);
 	m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default);
 	m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default);
 	m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default);
 	m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default);
 	m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default);
 	m->def_net_pf_threshold = SCTP_BASE_SYSCTL(sctp_path_pf_threshold);
 	m->sctp_sws_sender = SCTP_SWS_SENDER_DEF;
 	m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF;
 	m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default);
 	m->fr_max_burst = SCTP_BASE_SYSCTL(sctp_fr_max_burst_default);
 	m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module);
 	m->sctp_default_ss_module = SCTP_BASE_SYSCTL(sctp_default_ss_module);
 	m->max_open_streams_intome = SCTP_BASE_SYSCTL(sctp_nr_incoming_streams_default);
 	/* number of streams to pre-open on a association */
 	m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default);
 	/* Add adaptation cookie */
 	m->adaptation_layer_indicator = 0;
 	m->adaptation_layer_indicator_provided = 0;
 	/* seed random number generator */
 	m->random_counter = 1;
 	m->store_at = SCTP_SIGNATURE_SIZE;
 	SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers));
 	sctp_fill_random_store(m);
 	/* Minimum cookie size */
 	m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) +
 	    sizeof(struct sctp_state_cookie);
 	m->size_of_a_cookie += SCTP_SIGNATURE_SIZE;
 	/* Setup the initial secret */
 	(void)SCTP_GETTIME_TIMEVAL(&time);
 	m->time_of_secret_change = time.tv_sec;
 	for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
 		m->secret_key[0][i] = sctp_select_initial_TSN(m);
 	}
 	sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
 	/* How long is a cookie good for ? */
 	m->def_cookie_life = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default));
 	/*
 	 * Initialize authentication parameters
 	 */
 	m->local_hmacs = sctp_default_supported_hmaclist();
 	m->local_auth_chunks = sctp_alloc_chunklist();
 	m->default_dscp = 0;
 #ifdef INET6
 	m->default_flowlabel = 0;
 #endif
 	m->port = 0; /* encapsulation disabled by default */
 	sctp_auth_set_default_chunks(m->local_auth_chunks);
 	LIST_INIT(&m->shared_keys);
 	/* add default NULL key as key id 0 */
 	null_key = sctp_alloc_sharedkey();
 	sctp_insert_sharedkey(&m->shared_keys, null_key);
 	SCTP_INP_WUNLOCK(inp);
 #ifdef SCTP_LOG_CLOSING
 	sctp_log_closing(inp, NULL, 12);
 #endif
 	return (error);
 }
 void
 sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp,
     struct sctp_tcb *stcb)
 {
 	struct sctp_nets *net;
 	uint16_t lport, rport;
 	struct sctppcbhead *head;
 	struct sctp_laddr *laddr, *oladdr;
 	atomic_add_int(&stcb->asoc.refcnt, 1);
 	SCTP_TCB_UNLOCK(stcb);
 	SCTP_INP_INFO_WLOCK();
 	SCTP_INP_WLOCK(old_inp);
 	SCTP_INP_WLOCK(new_inp);
 	SCTP_TCB_LOCK(stcb);
 	atomic_subtract_int(&stcb->asoc.refcnt, 1);
 	new_inp->sctp_ep.time_of_secret_change =
 	    old_inp->sctp_ep.time_of_secret_change;
 	memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key,
 	    sizeof(old_inp->sctp_ep.secret_key));
 	new_inp->sctp_ep.current_secret_number =
 	    old_inp->sctp_ep.current_secret_number;
 	new_inp->sctp_ep.last_secret_number =
 	    old_inp->sctp_ep.last_secret_number;
 	new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie;
 	/* make it so new data pours into the new socket */
 	stcb->sctp_socket = new_inp->sctp_socket;
 	stcb->sctp_ep = new_inp;
 	/* Copy the port across */
 	lport = new_inp->sctp_lport = old_inp->sctp_lport;
 	rport = stcb->rport;
 	/* Pull the tcb from the old association */
 	LIST_REMOVE(stcb, sctp_tcbhash);
 	LIST_REMOVE(stcb, sctp_tcblist);
 	if (stcb->asoc.in_asocid_hash) {
 		LIST_REMOVE(stcb, sctp_tcbasocidhash);
 	}
 	/* Now insert the new_inp into the TCP connected hash */
 	head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
 	LIST_INSERT_HEAD(head, new_inp, sctp_hash);
 	/* Its safe to access */
 	new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
 	/* Now move the tcb into the endpoint list */
 	LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist);
 	/*
 	 * Question, do we even need to worry about the ep-hash since we
 	 * only have one connection? Probably not :> so lets get rid of it
 	 * and not suck up any kernel memory in that.
 	 */
 	if (stcb->asoc.in_asocid_hash) {
 		struct sctpasochead *lhd;
 		lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id,
 			new_inp->hashasocidmark)];
 		LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash);
 	}
 	/* Ok. Let's restart timer. */
 	TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 		sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp,
 		    stcb, net);
 	}
 	SCTP_INP_INFO_WUNLOCK();
 	if (new_inp->sctp_tcbhash != NULL) {
 		SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark);
 		new_inp->sctp_tcbhash = NULL;
 	}
 	if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
 		/* Subset bound, so copy in the laddr list from the old_inp */
 		LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) {
 			laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
 			if (laddr == NULL) {
 				/*
 				 * Gak, what can we do? This assoc is really
 				 * HOSED. We probably should send an abort
 				 * here.
 				 */
 				SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n");
 				continue;
 			}
 			SCTP_INCR_LADDR_COUNT();
 			bzero(laddr, sizeof(*laddr));
 			(void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
 			laddr->ifa = oladdr->ifa;
 			atomic_add_int(&laddr->ifa->refcount, 1);
 			LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr,
 			    sctp_nxt_addr);
 			new_inp->laddr_count++;
 			if (oladdr == stcb->asoc.last_used_address) {
 				stcb->asoc.last_used_address = laddr;
 			}
 		}
 	}
 	/* Now any running timers need to be adjusted
 	 * since we really don't care if they are running
 	 * or not just blast in the new_inp into all of
 	 * them.
 	 */
 	stcb->asoc.dack_timer.ep = (void *)new_inp;
 	stcb->asoc.asconf_timer.ep = (void *)new_inp;
 	stcb->asoc.strreset_timer.ep = (void *)new_inp;
 	stcb->asoc.shut_guard_timer.ep = (void *)new_inp;
 	stcb->asoc.autoclose_timer.ep = (void *)new_inp;
 	stcb->asoc.delayed_event_timer.ep = (void *)new_inp;
 	stcb->asoc.delete_prim_timer.ep = (void *)new_inp;
 	/* now what about the nets? */
 	TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 		net->pmtu_timer.ep = (void *)new_inp;
 		net->hb_timer.ep = (void *)new_inp;
 		net->rxt_timer.ep = (void *)new_inp;
 	}
 	SCTP_INP_WUNLOCK(new_inp);
 	SCTP_INP_WUNLOCK(old_inp);
 }
 #if !(defined(__FreeBSD__) || defined(__APPLE__) || defined(__Userspace__))
 /*
  * Don't know why, but without this there is an unknown reference when
  * compiling NetBSD... hmm
  */
 extern void in6_sin6_2_sin(struct sockaddr_in *, struct sockaddr_in6 *sin6);
 #endif
 /* sctp_ifap is used to bypass normal local address validation checks */
 int
 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
 sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
 		struct sctp_ifa *sctp_ifap, struct thread *p)
 #elif defined(__Windows__)
 sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
 		struct sctp_ifa *sctp_ifap, PKTHREAD p)
 #else
 sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
 		struct sctp_ifa *sctp_ifap, struct proc *p)
 #endif
 {
 	/* bind a ep to a socket address */
 	struct sctppcbhead *head;
 	struct sctp_inpcb *inp, *inp_tmp;
 #if defined(INET) || (defined(INET6) && defined(__APPLE__)) || defined(__FreeBSD__) || defined(__APPLE__)
 	struct inpcb *ip_inp;
 #endif
 	int port_reuse_active = 0;
 	int bindall;
 #ifdef SCTP_MVRF
 	int i;
 #endif
 	uint16_t lport;
 	int error;
 	uint32_t vrf_id;
 	lport = 0;
 	error = 0;
 	bindall = 1;
 	inp = (struct sctp_inpcb *)so->so_pcb;
 #if defined(INET) || (defined(INET6) && defined(__APPLE__)) || defined(__FreeBSD__) || defined(__APPLE__)
 	ip_inp = (struct inpcb *)so->so_pcb;
 #endif
 #ifdef SCTP_DEBUG
 	if (addr) {
 		SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port: %d\n",
 			ntohs(((struct sockaddr_in *)addr)->sin_port));
 		SCTPDBG(SCTP_DEBUG_PCB1, "Addr: ");
 		SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
 	}
 #endif
 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
 		/* already did a bind, subsequent binds NOT allowed ! */
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
 		return (EINVAL);
 	}
 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
 #ifdef INVARIANTS
 	if (p == NULL)
 		panic("null proc/thread");
 #endif
 #endif
 	if (addr != NULL) {
 		switch (addr->sa_family) {
 #ifdef INET
 		case AF_INET:
 		{
 			struct sockaddr_in *sin;
 			/* IPV6_V6ONLY socket? */
 			if (SCTP_IPV6_V6ONLY(ip_inp)) {
 				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
 				return (EINVAL);
 			}
 #ifdef HAVE_SA_LEN
 			if (addr->sa_len != sizeof(*sin)) {
 				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
 				return (EINVAL);
 			}
 #endif
 			sin = (struct sockaddr_in *)addr;
 			lport = sin->sin_port;
 #if defined(__FreeBSD__) && __FreeBSD_version >= 800000
  			/*
  			 * For LOOPBACK the prison_local_ip4() call will transmute the ip address
  			 * to the proper value.
  			 */
  			if (p && (error = prison_local_ip4(p->td_ucred, &sin->sin_addr)) != 0) {
  				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
  				return (error);
   			}
 #endif
 			if (sin->sin_addr.s_addr != INADDR_ANY) {
 				bindall = 0;
 			}
 			break;
 		}
 #endif
 #ifdef INET6
 		case AF_INET6:
 		{
 			/* Only for pure IPv6 Address. (No IPv4 Mapped!) */
 			struct sockaddr_in6 *sin6;
 			sin6 = (struct sockaddr_in6 *)addr;
 #ifdef HAVE_SA_LEN
 			if (addr->sa_len != sizeof(*sin6)) {
 				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
 				return (EINVAL);
 			}
 #endif
 			lport = sin6->sin6_port;
 #if defined(__FreeBSD__) && __FreeBSD_version >= 800000
   			/*
  			 * For LOOPBACK the prison_local_ip6() call will transmute the ipv6 address
  			 * to the proper value.
   			 */
  			if (p && (error = prison_local_ip6(p->td_ucred, &sin6->sin6_addr,
  			    (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
  				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
  				return (error);
  			}
 #endif
 			if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
 				bindall = 0;
 #ifdef SCTP_EMBEDDED_V6_SCOPE
 				/* KAME hack: embed scopeid */
 #if defined(SCTP_KAME)
 				if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
 					SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
 					return (EINVAL);
 				}
 #elif defined(__APPLE__)
 #if defined(APPLE_LEOPARD) || defined(APPLE_SNOWLEOPARD)
 				if (in6_embedscope(&sin6->sin6_addr, sin6, ip_inp, NULL) != 0) {
 #else
 				if (in6_embedscope(&sin6->sin6_addr, sin6, ip_inp, NULL, NULL) != 0) {
 #endif
 					SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
 					return (EINVAL);
 				}
 #elif defined(__FreeBSD__)
 				error = scope6_check_id(sin6, MODULE_GLOBAL(ip6_use_defzone));
 				if (error != 0) {
 					SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
 					return (error);
 				}
 #else
 				if (in6_embedscope(&sin6->sin6_addr, sin6) != 0) {
 					SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
 					return (EINVAL);
 				}
 #endif
 #endif /* SCTP_EMBEDDED_V6_SCOPE */
 			}
 #ifndef SCOPEDROUTING
 			/* this must be cleared for ifa_ifwithaddr() */
 			sin6->sin6_scope_id = 0;
 #endif /* SCOPEDROUTING */
 			break;
 		}
 #endif
 #if defined(__Userspace__)
 		case AF_CONN:
 		{
 			struct sockaddr_conn *sconn;
 #ifdef HAVE_SA_LEN
 			if (addr->sa_len != sizeof(struct sockaddr_conn)) {
 				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
 				return (EINVAL);
 			}
 #endif
 			sconn = (struct sockaddr_conn *)addr;
 			lport = sconn->sconn_port;
 			if (sconn->sconn_addr != NULL) {
 				bindall = 0;
 			}
 			break;
 		}
 #endif
 		default:
 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EAFNOSUPPORT);
 			return (EAFNOSUPPORT);
 		}
 	}
 	SCTP_INP_INFO_WLOCK();
 	SCTP_INP_WLOCK(inp);
 	/* Setup a vrf_id to be the default for the non-bind-all case. */
  	vrf_id = inp->def_vrf_id;
 	/* increase our count due to the unlock we do */
 	SCTP_INP_INCR_REF(inp);
 	if (lport) {
 		/*
 		 * Did the caller specify a port? if so we must see if an ep
 		 * already has this one bound.
 		 */
 		/* got to be root to get at low ports */
 #if !defined(__Windows__)
 		if (ntohs(lport) < IPPORT_RESERVED) {
 			if (p && (error =
 #ifdef __FreeBSD__
 #if __FreeBSD_version > 602000
 				  priv_check(p, PRIV_NETINET_RESERVEDPORT)
 #elif __FreeBSD_version >= 500000
 				  suser_cred(p->td_ucred, 0)
 #else
 				  suser(p)
 #endif
 #elif defined(__APPLE__)
 				  suser(p->p_ucred, &p->p_acflag)
 #elif defined(__Userspace__) /* must be true to use raw socket */
 
 #else
 				  suser(p, 0)
 #endif
 				    )) {
 				SCTP_INP_DECR_REF(inp);
 				SCTP_INP_WUNLOCK(inp);
 				SCTP_INP_INFO_WUNLOCK();
 				return (error);
 			}
 #if defined(__Panda__)
 			if (!SCTP_IS_PRIVILEDGED(so)) {
 				SCTP_INP_DECR_REF(inp);
 				SCTP_INP_WUNLOCK(inp);
 				SCTP_INP_INFO_WUNLOCK();
 				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EACCES);
 				return (EACCES);
 			}
 #endif
 		}
 #if !defined(__Panda__) && !defined(__Userspace__)
 		if (p == NULL) {
 			SCTP_INP_DECR_REF(inp);
 			SCTP_INP_WUNLOCK(inp);
 			SCTP_INP_INFO_WUNLOCK();
 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
 			return (error);
 		}
 #endif
 #endif /* __Windows__ */
 		SCTP_INP_WUNLOCK(inp);
 		if (bindall) {
 #ifdef SCTP_MVRF
 			for (i = 0; i < inp->num_vrfs; i++) {
 				vrf_id = inp->m_vrf_ids[i];
 #else
 				vrf_id = inp->def_vrf_id;
 #endif
 				inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
 				if (inp_tmp != NULL) {
 					/*
 					 * lock guy returned and lower count
 					 * note that we are not bound so
 					 * inp_tmp should NEVER be inp. And
 					 * it is this inp (inp_tmp) that gets
 					 * the reference bump, so we must
 					 * lower it.
 					 */
 					SCTP_INP_DECR_REF(inp_tmp);
 					/* unlock info */
 					if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
 					    (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
 						/* Ok, must be one-2-one and allowing port re-use */
 						port_reuse_active = 1;
 						goto continue_anyway;
 					}
 					SCTP_INP_DECR_REF(inp);
 					SCTP_INP_INFO_WUNLOCK();
 					SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
 					return (EADDRINUSE);
 				}
 #ifdef SCTP_MVRF
 			}
 #endif
 		} else {
 			inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
 			if (inp_tmp != NULL) {
 				/*
 				 * lock guy returned and lower count note
 				 * that we are not bound so inp_tmp should
 				 * NEVER be inp. And it is this inp (inp_tmp)
 				 * that gets the reference bump, so we must
 				 * lower it.
 				 */
 				SCTP_INP_DECR_REF(inp_tmp);
 				/* unlock info */
 				if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
 				    (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
 					/* Ok, must be one-2-one and allowing port re-use */
 					port_reuse_active = 1;
 					goto continue_anyway;
 				}
 				SCTP_INP_DECR_REF(inp);
 				SCTP_INP_INFO_WUNLOCK();
 				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
 				return (EADDRINUSE);
 			}
 		}
 	continue_anyway:
 		SCTP_INP_WLOCK(inp);
 		if (bindall) {
 			/* verify that no lport is not used by a singleton */
 			if ((port_reuse_active == 0) &&
 			    (inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))) {
 				/* Sorry someone already has this one bound */
 				if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
 				    (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
 					port_reuse_active = 1;
 				} else {
 					SCTP_INP_DECR_REF(inp);
 					SCTP_INP_WUNLOCK(inp);
 					SCTP_INP_INFO_WUNLOCK();
 					SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
 					return (EADDRINUSE);
 				}
 			}
 		}
 	} else {
 		uint16_t first, last, candidate;
                 uint16_t count;
 		int done;
 #if defined(__Windows__)
 		first = 1;
 		last = 0xffff;
 #else
 #if defined(__Userspace__)
                 /* TODO ensure uid is 0, etc... */
 #elif defined(__FreeBSD__) || defined(__APPLE__)
                 if (ip_inp->inp_flags & INP_HIGHPORT) {
                         first = MODULE_GLOBAL(ipport_hifirstauto);
                         last  = MODULE_GLOBAL(ipport_hilastauto);
                 } else if (ip_inp->inp_flags & INP_LOWPORT) {
 			if (p && (error =
 #ifdef __FreeBSD__
 #if __FreeBSD_version > 602000
 				  priv_check(p, PRIV_NETINET_RESERVEDPORT)
 #elif __FreeBSD_version >= 500000
 				  suser_cred(p->td_ucred, 0)
 #else
 				  suser(p)
 #endif
 #elif defined(__APPLE__)
 				  suser(p->p_ucred, &p->p_acflag)
 #else
 				  suser(p, 0)
 #endif
 				    )) {
 				SCTP_INP_DECR_REF(inp);
 				SCTP_INP_WUNLOCK(inp);
 				SCTP_INP_INFO_WUNLOCK();
 				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
 				return (error);
 			}
                         first = MODULE_GLOBAL(ipport_lowfirstauto);
                         last  = MODULE_GLOBAL(ipport_lowlastauto);
                 } else {
 #endif
  			first = MODULE_GLOBAL(ipport_firstauto);
  			last = MODULE_GLOBAL(ipport_lastauto);
 #if defined(__FreeBSD__) || defined(__APPLE__)
                 }
 #endif
 #endif /* __Windows__ */
 		if (first > last) {
 			uint16_t temp;
 			temp = first;
 			first = last;
 			last = temp;
 		}
 		count = last - first + 1; /* number of candidates */
 		candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count);
 		done = 0;
 		while (!done) {
 #ifdef SCTP_MVRF
 			for (i = 0; i < inp->num_vrfs; i++) {
 				if (sctp_isport_inuse(inp, htons(candidate), inp->m_vrf_ids[i]) != NULL) {
 					break;
 				}
 			}
 			if (i == inp->num_vrfs) {
 				done = 1;
 			}
 #else
 			if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) {
 				done = 1;
 			}
 #endif
 			if (!done) {
 				if (--count == 0) {
 					SCTP_INP_DECR_REF(inp);
 					SCTP_INP_WUNLOCK(inp);
 					SCTP_INP_INFO_WUNLOCK();
 					SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
 					return (EADDRINUSE);
 				}
 				if (candidate == last)
 					candidate = first;
 				else
 					candidate = candidate + 1;
 			}
 		}
 		lport = htons(candidate);
 	}
 	SCTP_INP_DECR_REF(inp);
 	if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE |
 			       SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
 		/*
 		 * this really should not happen. The guy did a non-blocking
 		 * bind and then did a close at the same time.
 		 */
 		SCTP_INP_WUNLOCK(inp);
 		SCTP_INP_INFO_WUNLOCK();
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
 		return (EINVAL);
 	}
 	/* ok we look clear to give out this port, so lets setup the binding */
 	if (bindall) {
 		/* binding to all addresses, so just set in the proper flags */
 		inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL;
 		/* set the automatic addr changes from kernel flag */
 		if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) {
 			sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
 			sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
 		} else {
 			sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
 			sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
 		}
 		if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) {
 			sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
 		} else {
 			sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
 		}
 		/* set the automatic mobility_base from kernel
 		   flag (by micchie)
 		*/
 		if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) {
 			sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE);
 			sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
 		} else {
 			sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE);
 			sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
 		}
 		/* set the automatic mobility_fasthandoff from kernel
 		   flag (by micchie)
 		*/
 		if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) {
 			sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF);
 			sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
 		} else {
 			sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF);
 			sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
 		}
 	} else {
 		/*
 		 * bind specific, make sure flags is off and add a new
 		 * address structure to the sctp_addr_list inside the ep
 		 * structure.
 		 *
 		 * We will need to allocate one and insert it at the head. The
 		 * socketopt call can just insert new addresses in there as
 		 * well. It will also have to do the embed scope kame hack
 		 * too (before adding).
 		 */
 		struct sctp_ifa *ifa;
 		struct sockaddr_storage store_sa;
 		memset(&store_sa, 0, sizeof(store_sa));
 		switch (addr->sa_family) {
 #ifdef INET
 		case AF_INET:
 		{
 			struct sockaddr_in *sin;
 			sin = (struct sockaddr_in *)&store_sa;
 			memcpy(sin, addr, sizeof(struct sockaddr_in));
 			sin->sin_port = 0;
 			break;
 		}
 #endif
 #ifdef INET6
 		case AF_INET6:
 		{
 			struct sockaddr_in6 *sin6;
 			sin6 = (struct sockaddr_in6 *)&store_sa;
 			memcpy(sin6, addr, sizeof(struct sockaddr_in6));
 			sin6->sin6_port = 0;
 			break;
 		}
 #endif
 #if defined(__Userspace__)
 		case AF_CONN:
 		{
 			struct sockaddr_conn *sconn;
 			sconn = (struct sockaddr_conn *)&store_sa;
 			memcpy(sconn, addr, sizeof(struct sockaddr_conn));
 			sconn->sconn_port = 0;
 			break;
 		}
 #endif
 		default:
 			break;
 		}
 		/*
 		 * first find the interface with the bound address need to
 		 * zero out the port to find the address! yuck! can't do
 		 * this earlier since need port for sctp_pcb_findep()
 		 */
 		if (sctp_ifap != NULL) {
 			ifa = sctp_ifap;
 		} else {
 			/* Note for BSD we hit here always other
 			 * O/S's will pass things in via the
 			 * sctp_ifap argument (Panda).
 			 */
 			ifa = sctp_find_ifa_by_addr((struct sockaddr *)&store_sa,
 						    vrf_id, SCTP_ADDR_NOT_LOCKED);
 		}
 		if (ifa == NULL) {
 			/* Can't find an interface with that address */
 			SCTP_INP_WUNLOCK(inp);
 			SCTP_INP_INFO_WUNLOCK();
 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRNOTAVAIL);
 			return (EADDRNOTAVAIL);
 		}
 #ifdef INET6
 		if (addr->sa_family == AF_INET6) {
 			/* GAK, more FIXME IFA lock? */
 			if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
 				/* Can't bind a non-existent addr. */
 				SCTP_INP_WUNLOCK(inp);
 				SCTP_INP_INFO_WUNLOCK();
 				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
 				return (EINVAL);
 			}
 		}
 #endif
 		/* we're not bound all */
 		inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL;
 		/* allow bindx() to send ASCONF's for binding changes */
 		sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
 		/* clear automatic addr changes from kernel flag */
 		sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
 		/* add this address to the endpoint list */
 		error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0);
 		if (error != 0) {
 			SCTP_INP_WUNLOCK(inp);
 			SCTP_INP_INFO_WUNLOCK();
 			return (error);
 		}
 		inp->laddr_count++;
 	}
 	/* find the bucket */
 	if (port_reuse_active) {
 		/* Put it into tcp 1-2-1 hash */
 		head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))];
 		inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
 	}  else {
 		head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))];
 	}
 	/* put it in the bucket */
 	LIST_INSERT_HEAD(head, inp, sctp_hash);
 	SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n",
 		(void *)head, ntohs(lport), port_reuse_active);
 	/* set in the port */
 	inp->sctp_lport = lport;
 	/* turn off just the unbound flag */
 	inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
 	SCTP_INP_WUNLOCK(inp);
 	SCTP_INP_INFO_WUNLOCK();
 	return (0);
 }
 static void
 sctp_iterator_inp_being_freed(struct sctp_inpcb *inp)
 {
 	struct sctp_iterator *it, *nit;
 	/*
 	 * We enter with the only the ITERATOR_LOCK in place and a write
 	 * lock on the inp_info stuff.
 	 */
 	it = sctp_it_ctl.cur_it;
 #if defined(__FreeBSD__) && __FreeBSD_version >= 801000
 	if (it && (it->vn != curvnet)) {
 		/* Its not looking at our VNET */
 		return;
 	}
 #endif
 	if (it && (it->inp == inp)) {
 		/*
 		 * This is tricky and we hold the iterator lock,
 		 * but when it returns and gets the lock (when we
 		 * release it) the iterator will try to operate on
 		 * inp. We need to stop that from happening. But
 		 * of course the iterator has a reference on the
 		 * stcb and inp. We can mark it and it will stop.
 		 *
 		 * If its a single iterator situation, we
 		 * set the end iterator flag. Otherwise
 		 * we set the iterator to go to the next inp.
 		 *
 		 */
 		if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
 			sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
 		} else {
 			sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_INP;
 		}
 	}
 	/* Now go through and remove any single reference to
 	 * our inp that may be still pending on the list
 	 */
 	SCTP_IPI_ITERATOR_WQ_LOCK();
 	TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
 #if defined(__FreeBSD__) && __FreeBSD_version >= 801000
 		if (it->vn != curvnet) {
 			continue;
 		}
 #endif
 		if (it->inp == inp) {
 			/* This one points to me is it inp specific? */
 			if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
 				/* Remove and free this one */
 				TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
 				    it, sctp_nxt_itr);
 				if (it->function_atend != NULL) {
 					(*it->function_atend) (it->pointer, it->val);
 				}
 				SCTP_FREE(it, SCTP_M_ITER);
 			} else {
 				it->inp = LIST_NEXT(it->inp, sctp_list);
 				if (it->inp) {
 					SCTP_INP_INCR_REF(it->inp);
 				}
 			}
 			/* When its put in the refcnt is incremented so decr it */
 			SCTP_INP_DECR_REF(inp);
 		}
 	}
 	SCTP_IPI_ITERATOR_WQ_UNLOCK();
 }
 /* release sctp_inpcb unbind the port */
 void
 sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
 {
 	/*
 	 * Here we free a endpoint. We must find it (if it is in the Hash
 	 * table) and remove it from there. Then we must also find it in the
 	 * overall list and remove it from there. After all removals are
 	 * complete then any timer has to be stopped. Then start the actual
 	 * freeing. a) Any local lists. b) Any associations. c) The hash of
 	 * all associations. d) finally the ep itself.
 	 */
 	struct sctp_tcb *asoc, *nasoc;
 	struct sctp_laddr *laddr, *nladdr;
 	struct inpcb *ip_pcb;
 	struct socket *so;
 	int being_refed = 0;
 	struct sctp_queued_to_read *sq, *nsq;
 #if !defined(__Panda__) && !defined(__Userspace__)
 #if !defined(__FreeBSD__) || __FreeBSD_version < 500000
 	sctp_rtentry_t *rt;
 #endif
 #endif
 	int cnt;
 	sctp_sharedkey_t *shared_key, *nshared_key;
 #if defined(__APPLE__)
 	sctp_lock_assert(SCTP_INP_SO(inp));
 #endif
 #ifdef SCTP_LOG_CLOSING
 	sctp_log_closing(inp, NULL, 0);
 #endif
 	SCTP_ITERATOR_LOCK();
 	/* mark any iterators on the list or being processed */
 	sctp_iterator_inp_being_freed(inp);
 	SCTP_ITERATOR_UNLOCK();
 	so = inp->sctp_socket;
 	if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
 		/* been here before.. eeks.. get out of here */
 		SCTP_PRINTF("This conflict in free SHOULD not be happening! from %d, imm %d\n", from, immediate);
 #ifdef SCTP_LOG_CLOSING
 		sctp_log_closing(inp, NULL, 1);
 #endif
 		return;
 	}
 	SCTP_ASOC_CREATE_LOCK(inp);
 	SCTP_INP_INFO_WLOCK();
 	SCTP_INP_WLOCK(inp);
 	if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
 		inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP;
 		/* socket is gone, so no more wakeups allowed */
 		inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE;
 		inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
 		inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
 	}
 	/* First time through we have the socket lock, after that no more. */
 	sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL,
 			SCTP_FROM_SCTP_PCB+SCTP_LOC_1);
 	if (inp->control) {
 		sctp_m_freem(inp->control);
 		inp->control = NULL;
 	}
 	if (inp->pkt) {
 		sctp_m_freem(inp->pkt);
 		inp->pkt = NULL;
 	}
 	ip_pcb = &inp->ip_inp.inp;	/* we could just cast the main pointer
 					 * here but I will be nice :> (i.e.
 					 * ip_pcb = ep;) */
 	if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
 		int cnt_in_sd;
 		cnt_in_sd = 0;
 		LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
 			SCTP_TCB_LOCK(asoc);
 			if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
 				/* Skip guys being freed */
 				cnt_in_sd++;
 				if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
 					/*
 					 * Special case - we did not start a kill
 					 * timer on the asoc due to it was not
 					 * closed. So go ahead and start it now.
 					 */
 					asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
 					sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
 				}
 				SCTP_TCB_UNLOCK(asoc);
 				continue;
 			}
 			if (((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_WAIT) ||
 			    (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_ECHOED)) &&
 			    (asoc->asoc.total_output_queue_size == 0)) {
 				/* If we have data in queue, we don't want to just
 				 * free since the app may have done, send()/close
 				 * or connect/send/close. And it wants the data
 				 * to get across first.
 				 */
 				/* Just abandon things in the front states */
 				if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE,
 						   SCTP_FROM_SCTP_PCB+SCTP_LOC_2) == 0) {
 					cnt_in_sd++;
 				}
 				continue;
 			}
 			/* Disconnect the socket please */
 			asoc->sctp_socket = NULL;
 			asoc->asoc.state |= SCTP_STATE_CLOSED_SOCKET;
 			if ((asoc->asoc.size_on_reasm_queue > 0) ||
 			    (asoc->asoc.control_pdapi) ||
 			    (asoc->asoc.size_on_all_streams > 0) ||
 			    (so && (so->so_rcv.sb_cc > 0))) {
 				/* Left with Data unread */
 				struct mbuf *op_err;
 				op_err = sctp_get_mbuf_for_msg(sizeof(struct sctp_paramhdr),
 , M_NOWAIT, 1, MT_DATA);
 				if (op_err) {
 					/* Fill in the user initiated abort */
 					struct sctp_paramhdr *ph;
 					SCTP_BUF_LEN(op_err) = sizeof(struct sctp_paramhdr);
 					ph = mtod(op_err, struct sctp_paramhdr *);
 					ph->param_type = htons(SCTP_CAUSE_USER_INITIATED_ABT);
 					ph->param_length = htons(SCTP_BUF_LEN(op_err));
 				}
 				asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB+SCTP_LOC_3;
 				sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
 				SCTP_STAT_INCR_COUNTER32(sctps_aborted);
 				if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
 				    (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 					SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 				}
 				if (sctp_free_assoc(inp, asoc,
 						    SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB+SCTP_LOC_4) == 0) {
 					cnt_in_sd++;
 				}
 				continue;
 			} else if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
 			           TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
 			           (asoc->asoc.stream_queue_cnt == 0)) {
 				if (asoc->asoc.locked_on_sending) {
 					goto abort_anyway;
 				}
 				if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
 				    (SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
 					struct sctp_nets *netp;
 					/*
 					 * there is nothing queued to send,
 					 * so I send shutdown
 					 */
 					if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
 					    (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 						SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 					}
 					SCTP_SET_STATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_SENT);
 					SCTP_CLEAR_SUBSTATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_PENDING);
 					sctp_stop_timers_for_shutdown(asoc);
 					if (asoc->asoc.alternate) {
 						netp = asoc->asoc.alternate;
 					} else {
 						netp = asoc->asoc.primary_destination;
 					}
 					sctp_send_shutdown(asoc, netp);
 					sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, asoc->sctp_ep, asoc,
 					    netp);
 					sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
 					    asoc->asoc.primary_destination);
 					sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED);
 				}
 			} else {
 				/* mark into shutdown pending */
 				struct sctp_stream_queue_pending *sp;
 				asoc->asoc.state |= SCTP_STATE_SHUTDOWN_PENDING;
 				sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
 						 asoc->asoc.primary_destination);
 				if (asoc->asoc.locked_on_sending) {
 					sp = TAILQ_LAST(&((asoc->asoc.locked_on_sending)->outqueue),
 						sctp_streamhead);
 					if (sp == NULL) {
 						SCTP_PRINTF("Error, sp is NULL, locked on sending is %p strm:%d\n",
 						       (void *)asoc->asoc.locked_on_sending,
 						       asoc->asoc.locked_on_sending->stream_no);
 					} else {
 						if ((sp->length == 0) && (sp->msg_is_complete == 0))
 							asoc->asoc.state |= SCTP_STATE_PARTIAL_MSG_LEFT;
 					}
 				}
 				if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
 				    TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
 				    (asoc->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
 					struct mbuf *op_err;
 				abort_anyway:
 					op_err = sctp_get_mbuf_for_msg(sizeof(struct sctp_paramhdr),
 , M_NOWAIT, 1, MT_DATA);
 					if (op_err) {
 						/* Fill in the user initiated abort */
 						struct sctp_paramhdr *ph;
 						SCTP_BUF_LEN(op_err) = sizeof(struct sctp_paramhdr);
 						ph = mtod(op_err, struct sctp_paramhdr *);
 						ph->param_type = htons(SCTP_CAUSE_USER_INITIATED_ABT);
 						ph->param_length = htons(SCTP_BUF_LEN(op_err));
 					}
 					asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB+SCTP_LOC_5;
 					sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
 					SCTP_STAT_INCR_COUNTER32(sctps_aborted);
 					if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
 					    (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 						SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 					}
 					if (sctp_free_assoc(inp, asoc,
 							    SCTP_PCBFREE_NOFORCE,
 							    SCTP_FROM_SCTP_PCB+SCTP_LOC_6) == 0) {
 						cnt_in_sd++;
 					}
 					continue;
 				} else {
 					sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
 				}
 			}
 			cnt_in_sd++;
 			SCTP_TCB_UNLOCK(asoc);
 		}
 		/* now is there some left in our SHUTDOWN state? */
 		if (cnt_in_sd) {
 #ifdef SCTP_LOG_CLOSING
 			sctp_log_closing(inp, NULL, 2);
 #endif
 			inp->sctp_socket = NULL;
 			SCTP_INP_WUNLOCK(inp);
 			SCTP_ASOC_CREATE_UNLOCK(inp);
 			SCTP_INP_INFO_WUNLOCK();
 			return;
 		}
 	}
 	inp->sctp_socket = NULL;
 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) !=
 	    SCTP_PCB_FLAGS_UNBOUND) {
 		/*
 		 * ok, this guy has been bound. It's port is
 		 * somewhere in the SCTP_BASE_INFO(hash table). Remove
 		 * it!
 		 */
 		LIST_REMOVE(inp, sctp_hash);
 		inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND;
 	}
 	/* If there is a timer running to kill us,
 	 * forget it, since it may have a contest
 	 * on the INP lock.. which would cause us
 	 * to die ...
 	 */
 	cnt = 0;
 	LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
 		SCTP_TCB_LOCK(asoc);
 		if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
 			if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
 				asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
 				sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
 			}
 		        cnt++;
 			SCTP_TCB_UNLOCK(asoc);
 			continue;
 		}
 		/* Free associations that are NOT killing us */
 		if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_COOKIE_WAIT) &&
 		    ((asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) {
 			struct mbuf *op_err;
 			op_err = sctp_get_mbuf_for_msg(sizeof(struct sctp_paramhdr),
 , M_NOWAIT, 1, MT_DATA);
 			if (op_err) {
 				/* Fill in the user initiated abort */
 				struct sctp_paramhdr *ph;
 				SCTP_BUF_LEN(op_err) = sizeof(struct sctp_paramhdr);
 				ph = mtod(op_err, struct sctp_paramhdr *);
 				ph->param_type = htons(SCTP_CAUSE_USER_INITIATED_ABT);
 				ph->param_length = htons(SCTP_BUF_LEN(op_err));
 			}
 			asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB+SCTP_LOC_7;
 			sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
 			SCTP_STAT_INCR_COUNTER32(sctps_aborted);
 		} else if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
 			cnt++;
 			SCTP_TCB_UNLOCK(asoc);
 			continue;
 		}
 		if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
 		    (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 			SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 		}
 		if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_PCB+SCTP_LOC_8) == 0) {
 			cnt++;
 		}
 	}
 	if (cnt) {
 		/* Ok we have someone out there that will kill us */
 		(void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
 #ifdef SCTP_LOG_CLOSING
 		sctp_log_closing(inp, NULL, 3);
 #endif
 		SCTP_INP_WUNLOCK(inp);
 		SCTP_ASOC_CREATE_UNLOCK(inp);
 		SCTP_INP_INFO_WUNLOCK();
 		return;
 	}
 	if (SCTP_INP_LOCK_CONTENDED(inp))
 		being_refed++;
 	if (SCTP_INP_READ_CONTENDED(inp))
 		being_refed++;
 	if (SCTP_ASOC_CREATE_LOCK_CONTENDED(inp))
 		being_refed++;
 	if ((inp->refcount) ||
 	    (being_refed) ||
 	    (inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) {
 		(void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
 #ifdef SCTP_LOG_CLOSING
 		sctp_log_closing(inp, NULL, 4);
 #endif
 		sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
 		SCTP_INP_WUNLOCK(inp);
 		SCTP_ASOC_CREATE_UNLOCK(inp);
 		SCTP_INP_INFO_WUNLOCK();
 		return;
 	}
 	inp->sctp_ep.signature_change.type = 0;
 	inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE;
 	/* Remove it from the list .. last thing we need a
 	 * lock for.
 	 */
 	LIST_REMOVE(inp, sctp_list);
 	SCTP_INP_WUNLOCK(inp);
 	SCTP_ASOC_CREATE_UNLOCK(inp);
 	SCTP_INP_INFO_WUNLOCK();
 	/* Now we release all locks. Since this INP
 	 * cannot be found anymore except possibly by the
 	 * kill timer that might be running. We call
 	 * the drain function here. It should hit the case
 	 * were it sees the ACTIVE flag cleared and exit
 	 * out freeing us to proceed and destroy everything.
 	 */
 	if (from != SCTP_CALLED_FROM_INPKILL_TIMER) {
 		(void)SCTP_OS_TIMER_STOP_DRAIN(&inp->sctp_ep.signature_change.timer);
 	} else {
 		/* Probably un-needed */
 		(void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
 	}
 #ifdef SCTP_LOG_CLOSING
 	sctp_log_closing(inp, NULL, 5);
 #endif
 #if !(defined(__Panda__) || defined(__Windows__) || defined(__Userspace__))
 #if !defined(__FreeBSD__) || __FreeBSD_version < 500000
 	rt = ip_pcb->inp_route.ro_rt;
 #endif
 #endif
 #if defined(__Panda__)
 	if (inp->pak_to_read) {
 		(void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.zero_copy_timer.timer);
 		SCTP_RELEASE_PKT(inp->pak_to_read);
 		inp->pak_to_read = NULL;
 	}
 	if (inp->pak_to_read_sendq) {
 		(void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.zero_copy_sendq_timer.timer);
 		SCTP_RELEASE_PKT(inp->pak_to_read_sendq);
 		inp->pak_to_read_sendq = NULL;
 	}
 #endif
 	if ((inp->sctp_asocidhash) != NULL) {
 		SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark);
 		inp->sctp_asocidhash = NULL;
 	}
 	/*sa_ignore FREED_MEMORY*/
 	TAILQ_FOREACH_SAFE(sq, &inp->read_queue, next, nsq) {
 		/* Its only abandoned if it had data left */
 		if (sq->length)
 			SCTP_STAT_INCR(sctps_left_abandon);
 		TAILQ_REMOVE(&inp->read_queue, sq, next);
 		sctp_free_remote_addr(sq->whoFrom);
 		if (so)
 			so->so_rcv.sb_cc -= sq->length;
 		if (sq->data) {
 			sctp_m_freem(sq->data);
 			sq->data = NULL;
 		}
 		/*
 		 * no need to free the net count, since at this point all
 		 * assoc's are gone.
 		 */
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
 		SCTP_DECR_READQ_COUNT();
 	}
 	/* Now the sctp_pcb things */
 	/*
 	 * free each asoc if it is not already closed/free. we can't use the
 	 * macro here since le_next will get freed as part of the
 	 * sctp_free_assoc() call.
 	 */
 	if (so) {
 #ifdef IPSEC
 		ipsec_delete_pcbpolicy(ip_pcb);
 #endif				/* IPSEC */
 		/* Unlocks not needed since the socket is gone now */
 	}
 #ifndef __Panda__
 	if (ip_pcb->inp_options) {
 		(void)sctp_m_free(ip_pcb->inp_options);
 		ip_pcb->inp_options = 0;
 	}
 #endif
 #if !(defined(__Panda__) || defined(__Windows__) || defined(__Userspace__))
 #if !defined(__FreeBSD__) || __FreeBSD_version < 500000
 	if (rt) {
 		RTFREE(rt);
 		ip_pcb->inp_route.ro_rt = 0;
 	}
 #endif
 #if defined(__FreeBSD__) && __FreeBSD_version < 803000
 #ifdef INET
 	if (ip_pcb->inp_moptions) {
 		inp_freemoptions(ip_pcb->inp_moptions);
 		ip_pcb->inp_moptions = 0;
 	}
 #endif
 #endif
 #endif
 #ifdef INET6
 #if !(defined(__Panda__) || defined(__Windows__) || defined(__Userspace__))
 #if defined(__FreeBSD__) || defined(__APPLE__)
 	if (ip_pcb->inp_vflag & INP_IPV6) {
 #else
 	if (inp->inp_vflag & INP_IPV6) {
 #endif
 		struct in6pcb *in6p;
 		in6p = (struct in6pcb *)inp;
 		ip6_freepcbopts(in6p->in6p_outputopts);
 	}
 #endif
 #endif				/* INET6 */
 #if !(defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__))
 	inp->inp_vflag = 0;
 #else
 	ip_pcb->inp_vflag = 0;
 #endif
 	/* free up authentication fields */
 	if (inp->sctp_ep.local_auth_chunks != NULL)
 		sctp_free_chunklist(inp->sctp_ep.local_auth_chunks);
 	if (inp->sctp_ep.local_hmacs != NULL)
 		sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
 	LIST_FOREACH_SAFE(shared_key, &inp->sctp_ep.shared_keys, next, nshared_key) {
 		LIST_REMOVE(shared_key, next);
 		sctp_free_sharedkey(shared_key);
 		/*sa_ignore FREED_MEMORY*/
 	}
 #if defined(__APPLE__)
 	inp->ip_inp.inp.inp_state = INPCB_STATE_DEAD;
 	if (in_pcb_checkstate(&inp->ip_inp.inp, WNT_STOPUSING, 1) != WNT_STOPUSING) {
 #ifdef INVARIANTS
 		panic("sctp_inpcb_free inp = %p couldn't set to STOPUSING\n", (void *)inp);
 #else
 		SCTP_PRINTF("sctp_inpcb_free inp = %p couldn't set to STOPUSING\n", (void *)inp);
 #endif
 	}
 	inp->ip_inp.inp.inp_socket->so_flags |= SOF_PCBCLEARING;
 #endif
 	/*
 	 * if we have an address list the following will free the list of
 	 * ifaddr's that are set into this ep. Again macro limitations here,
 	 * since the LIST_FOREACH could be a bad idea.
 	 */
 	LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
 		sctp_remove_laddr(laddr);
 	}
 #ifdef SCTP_TRACK_FREED_ASOCS
 	/* TEMP CODE */
 	LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_free_list, sctp_tcblist, nasoc) {
 		LIST_REMOVE(asoc, sctp_tcblist);
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), asoc);
 		SCTP_DECR_ASOC_COUNT();
 	}
 	/* *** END TEMP CODE ****/
 #endif
 #ifdef SCTP_MVRF
 	SCTP_FREE(inp->m_vrf_ids, SCTP_M_MVRF);
 #endif
 	/* Now lets see about freeing the EP hash table. */
 	if (inp->sctp_tcbhash != NULL) {
 		SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
 		inp->sctp_tcbhash = NULL;
 	}
 	/* Now we must put the ep memory back into the zone pool */
 #if defined(__FreeBSD__)
 	INP_LOCK_DESTROY(&inp->ip_inp.inp);
 #endif
 	SCTP_INP_LOCK_DESTROY(inp);
 	SCTP_INP_READ_DESTROY(inp);
 	SCTP_ASOC_CREATE_LOCK_DESTROY(inp);
 #if !defined(__APPLE__)
 	SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
 	SCTP_DECR_EP_COUNT();
 #else
 	/* For Tiger, we will do this later... */
 #endif
 }
 struct sctp_nets *
 sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
 {
 	struct sctp_nets *net;
 	/* locate the address */
 	TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 		if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr))
 			return (net);
 	}
 	return (NULL);
 }
 int
 sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
 {
 #ifdef __Panda__
 	return (0);
 #else
 	struct sctp_ifa *sctp_ifa;
 	sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED);
 	if (sctp_ifa) {
 		return (1);
 	} else {
 		return (0);
 	}
 #endif
 }
 /*
  * add's a remote endpoint address, done with the INIT/INIT-ACK as well as
  * when a ASCONF arrives that adds it. It will also initialize all the cwnd
  * stats of stuff.
  */
 int
 sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
     struct sctp_nets **netp, int set_scope, int from)
 {
 	/*
 	 * The following is redundant to the same lines in the
 	 * sctp_aloc_assoc() but is needed since others call the add
 	 * address function
 	 */
 	struct sctp_nets *net, *netfirst;
 	int addr_inscope;
 	SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ",
 		from);
 	SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr);
 	netfirst = sctp_findnet(stcb, newaddr);
 	if (netfirst) {
 		/*
 		 * Lie and return ok, we don't want to make the association
 		 * go away for this behavior. It will happen in the TCP
 		 * model in a connected socket. It does not reach the hash
 		 * table until after the association is built so it can't be
 		 * found. Mark as reachable, since the initial creation will
 		 * have been cleared and the NOT_IN_ASSOC flag will have
 		 * been added... and we don't want to end up removing it
 		 * back out.
 		 */
 		if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) {
 			netfirst->dest_state = (SCTP_ADDR_REACHABLE |
 			    SCTP_ADDR_UNCONFIRMED);
 		} else {
 			netfirst->dest_state = SCTP_ADDR_REACHABLE;
 		}
 		return (0);
 	}
 	addr_inscope = 1;
 	switch (newaddr->sa_family) {
 #ifdef INET
 	case AF_INET:
 	{
 		struct sockaddr_in *sin;
 		sin = (struct sockaddr_in *)newaddr;
 		if (sin->sin_addr.s_addr == 0) {
 			/* Invalid address */
 			return (-1);
 		}
 		/* zero out the bzero area */
 		memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
 		/* assure len is set */
 #ifdef HAVE_SIN_LEN
 		sin->sin_len = sizeof(struct sockaddr_in);
 #endif
 		if (set_scope) {
 #ifdef SCTP_DONT_DO_PRIVADDR_SCOPE
 			stcb->asoc.scope.ipv4_local_scope = 1;
 #else
 			if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
 				stcb->asoc.scope.ipv4_local_scope = 1;
 			}
 #endif				/* SCTP_DONT_DO_PRIVADDR_SCOPE */
 		} else {
 			/* Validate the address is in scope */
 			if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) &&
 			    (stcb->asoc.scope.ipv4_local_scope == 0)) {
 				addr_inscope = 0;
 			}
 		}
 		break;
 	}
 #endif
 #ifdef INET6
 	case AF_INET6:
 	{
 		struct sockaddr_in6 *sin6;
 		sin6 = (struct sockaddr_in6 *)newaddr;
 		if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
 			/* Invalid address */
 			return (-1);
 		}
 		/* assure len is set */
 #ifdef HAVE_SIN6_LEN
 		sin6->sin6_len = sizeof(struct sockaddr_in6);
 #endif
 		if (set_scope) {
 			if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) {
 				stcb->asoc.scope.loopback_scope = 1;
 				stcb->asoc.scope.local_scope = 0;
 				stcb->asoc.scope.ipv4_local_scope = 1;
 				stcb->asoc.scope.site_scope = 1;
 			} else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
 				/*
 				 * If the new destination is a LINK_LOCAL we
 				 * must have common site scope. Don't set
 				 * the local scope since we may not share
 				 * all links, only loopback can do this.
 				 * Links on the local network would also be
 				 * on our private network for v4 too.
 				 */
 				stcb->asoc.scope.ipv4_local_scope = 1;
 				stcb->asoc.scope.site_scope = 1;
 			} else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
 				/*
 				 * If the new destination is SITE_LOCAL then
 				 * we must have site scope in common.
 				 */
 				stcb->asoc.scope.site_scope = 1;
 			}
 		} else {
 			/* Validate the address is in scope */
 			if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) &&
 			    (stcb->asoc.scope.loopback_scope == 0)) {
 				addr_inscope = 0;
 			} else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
 			    (stcb->asoc.scope.local_scope == 0)) {
 				addr_inscope = 0;
 			} else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
 			    (stcb->asoc.scope.site_scope == 0)) {
 				addr_inscope = 0;
 			}
 		}
 		break;
 	}
 #endif
 #if defined(__Userspace__)
 	case AF_CONN:
 	{
 		struct sockaddr_conn *sconn;
 		sconn = (struct sockaddr_conn *)newaddr;
 		if (sconn->sconn_addr == NULL) {
 			/* Invalid address */
 			return (-1);
 		}
 #ifdef HAVE_SCONN_LEN
 		sconn->sconn_len = sizeof(struct sockaddr_conn);
 #endif
 		break;
 	}
 #endif
 	default:
 		/* not supported family type */
 		return (-1);
 	}
 	net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets);
 	if (net == NULL) {
 		return (-1);
 	}
 	SCTP_INCR_RADDR_COUNT();
 	bzero(net, sizeof(struct sctp_nets));
 	(void)SCTP_GETTIME_TIMEVAL(&net->start_time);
 #ifdef HAVE_SA_LEN
 	memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len);
 #endif
 	switch (newaddr->sa_family) {
 #ifdef INET
 	case AF_INET:
 #ifndef HAVE_SA_LEN
 		memcpy(&net->ro._l_addr, newaddr, sizeof(struct sockaddr_in));
 #endif
 		((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport;
 		break;
 #endif
 #ifdef INET6
 	case AF_INET6:
 #ifndef HAVE_SA_LEN
 		memcpy(&net->ro._l_addr, newaddr, sizeof(struct sockaddr_in6));
 #endif
 		((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport;
 		break;
 #endif
 #if defined(__Userspace__)
 	case AF_CONN:
 #ifndef HAVE_SA_LEN
 		memcpy(&net->ro._l_addr, newaddr, sizeof(struct sockaddr_conn));
 #endif
 		((struct sockaddr_conn *)&net->ro._l_addr)->sconn_port = stcb->rport;
 		break;
 #endif
 	default:
 		break;
 	}
 	net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id);
 	if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) {
 		stcb->asoc.scope.loopback_scope = 1;
 		stcb->asoc.scope.ipv4_local_scope = 1;
 		stcb->asoc.scope.local_scope = 0;
 		stcb->asoc.scope.site_scope = 1;
 		addr_inscope = 1;
 	}
 	net->failure_threshold = stcb->asoc.def_net_failure;
 	net->pf_threshold = stcb->asoc.def_net_pf_threshold;
 	if (addr_inscope == 0) {
 		net->dest_state = (SCTP_ADDR_REACHABLE |
 		    SCTP_ADDR_OUT_OF_SCOPE);
 	} else {
 		if (from == SCTP_ADDR_IS_CONFIRMED)
 			/* SCTP_ADDR_IS_CONFIRMED is passed by connect_x */
 			net->dest_state = SCTP_ADDR_REACHABLE;
 		else
 			net->dest_state = SCTP_ADDR_REACHABLE |
 			    SCTP_ADDR_UNCONFIRMED;
 	}
 	/* We set this to 0, the timer code knows that
 	 * this means its an initial value
 	 */
 	net->rto_needed = 1;
  	net->RTO = 0;
 	net->RTO_measured = 0;
 	stcb->asoc.numnets++;
 	net->ref_count = 1;
 	net->cwr_window_tsn = net->last_cwr_tsn = stcb->asoc.sending_seq - 1;
 	net->port = stcb->asoc.port;
 	net->dscp = stcb->asoc.default_dscp;
 #ifdef INET6
 	net->flowlabel = stcb->asoc.default_flowlabel;
 #endif
 	if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
 		net->dest_state |= SCTP_ADDR_NOHB;
 	} else {
 		net->dest_state &= ~SCTP_ADDR_NOHB;
 	}
 	if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DO_NOT_PMTUD)) {
 		net->dest_state |= SCTP_ADDR_NO_PMTUD;
 	} else {
 		net->dest_state &= ~SCTP_ADDR_NO_PMTUD;
 	}
 	net->heart_beat_delay = stcb->asoc.heart_beat_delay;
 	/* Init the timer structure */
 	SCTP_OS_TIMER_INIT(&net->rxt_timer.timer);
 	SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer);
 	SCTP_OS_TIMER_INIT(&net->hb_timer.timer);
 	/* Now generate a route for this guy */
 #ifdef INET6
 #ifdef SCTP_EMBEDDED_V6_SCOPE
 	/* KAME hack: embed scopeid */
 	if (newaddr->sa_family == AF_INET6) {
 		struct sockaddr_in6 *sin6;
 		sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
 #if defined(__APPLE__)
 #if defined(APPLE_LEOPARD) || defined(APPLE_SNOWLEOPARD)
 		(void)in6_embedscope(&sin6->sin6_addr, sin6, &stcb->sctp_ep->ip_inp.inp, NULL);
 #else
 		(void)in6_embedscope(&sin6->sin6_addr, sin6, &stcb->sctp_ep->ip_inp.inp, NULL, NULL);
 #endif
 #elif defined(SCTP_KAME)
 		(void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone));
 #else
 		(void)in6_embedscope(&sin6->sin6_addr, sin6);
 #endif
 #ifndef SCOPEDROUTING
 		sin6->sin6_scope_id = 0;
 #endif
 	}
 #endif /* SCTP_EMBEDDED_V6_SCOPE */
 #endif
 	SCTP_RTALLOC((sctp_route_t *)&net->ro, stcb->asoc.vrf_id);
 #if !defined(__Userspace__)
 	if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) {
 		/* Get source address */
 		net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep,
 								stcb,
 								(sctp_route_t *)&net->ro,
 								net,
 ,
 								stcb->asoc.vrf_id);
 		/* Now get the interface MTU */
 		if (net->ro._s_addr && net->ro._s_addr->ifn_p) {
 			net->mtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p);
 		}
 		if (net->mtu > 0) {
 			uint32_t rmtu;
 			rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_rt);
 			if (rmtu == 0) {
 				/* Start things off to match mtu of interface please. */
 				SCTP_SET_MTU_OF_ROUTE(&net->ro._l_addr.sa,
 						      net->ro.ro_rt, net->mtu);
 			} else {
 				/* we take the route mtu over the interface, since
 				 * the route may be leading out the loopback, or
 				 * a different interface.
 				 */
  				net->mtu = rmtu;
 			}
 	        }
 	}
 #endif
 	if (net->mtu == 0) {
 		switch (newaddr->sa_family) {
 #ifdef INET
 		case AF_INET:
 			net->mtu = SCTP_DEFAULT_MTU;
 			break;
 #endif
 #ifdef INET6
 		case AF_INET6:
 			net->mtu = 1280;
 			break;
 #endif
 #if defined(__Userspace__)
 		case AF_CONN:
 			net->mtu = 1280;
 			break;
 #endif
 		default:
 			break;
 		}
 	}
 	if (net->port) {
 		net->mtu -= (uint32_t)sizeof(struct udphdr);
 	}
 	if (from == SCTP_ALLOC_ASOC) {
 		stcb->asoc.smallest_mtu = net->mtu;
 	}
 	if (stcb->asoc.smallest_mtu > net->mtu) {
 		stcb->asoc.smallest_mtu = net->mtu;
 	}
 #ifdef INET6
 #ifdef SCTP_EMBEDDED_V6_SCOPE
 	if (newaddr->sa_family == AF_INET6) {
 		struct sockaddr_in6 *sin6;
 		sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
 #ifdef SCTP_KAME
 		(void)sa6_recoverscope(sin6);
 #else
 		(void)in6_recoverscope(sin6, &sin6->sin6_addr, NULL);
 #endif /* SCTP_KAME */
 	}
 #endif /* SCTP_EMBEDDED_V6_SCOPE */
 #endif
 	/* JRS - Use the congestion control given in the CC module */
 	if (stcb->asoc.cc_functions.sctp_set_initial_cc_param != NULL)
 		(*stcb->asoc.cc_functions.sctp_set_initial_cc_param)(stcb, net);
 	/*
 	 * CMT: CUC algo - set find_pseudo_cumack to TRUE (1) at beginning
 	 * of assoc (2005/06/27, iyengar@cis.udel.edu)
 	 */
 	net->find_pseudo_cumack = 1;
 	net->find_rtx_pseudo_cumack = 1;
 	net->src_addr_selected = 0;
 #if defined(__FreeBSD__)
 	/* Choose an initial flowid. */
 	net->flowid = stcb->asoc.my_vtag ^
 	              ntohs(stcb->rport) ^
 	              ntohs(stcb->sctp_ep->sctp_lport);
 #ifdef INVARIANTS
 	net->flowidset = 1;
 #endif
 #endif
 	if (netp) {
 		*netp = net;
 	}
 	netfirst = TAILQ_FIRST(&stcb->asoc.nets);
 	if (net->ro.ro_rt == NULL) {
 		/* Since we have no route put it at the back */
 		TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
 	} else if (netfirst == NULL) {
 		/* We are the first one in the pool. */
 		TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
 	} else if (netfirst->ro.ro_rt == NULL) {
 		/*
 		 * First one has NO route. Place this one ahead of the first
 		 * one.
 		 */
 		TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
 #ifndef __Panda__
 	} else if (net->ro.ro_rt->rt_ifp != netfirst->ro.ro_rt->rt_ifp) {
 		/*
 		 * This one has a different interface than the one at the
 		 * top of the list. Place it ahead.
 		 */
 		TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
 #endif
 	} else {
 		/*
 		 * Ok we have the same interface as the first one. Move
 		 * forward until we find either a) one with a NULL route...
 		 * insert ahead of that b) one with a different ifp.. insert
 		 * after that. c) end of the list.. insert at the tail.
 		 */
 		struct sctp_nets *netlook;
 		do {
 			netlook = TAILQ_NEXT(netfirst, sctp_next);
 			if (netlook == NULL) {
 				/* End of the list */
 				TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
 				break;
 			} else if (netlook->ro.ro_rt == NULL) {
 				/* next one has NO route */
 				TAILQ_INSERT_BEFORE(netfirst, net, sctp_next);
 				break;
 			}
 #ifndef __Panda__
 			else if (netlook->ro.ro_rt->rt_ifp != net->ro.ro_rt->rt_ifp)
 #else
 			else
 #endif
 			{
 				TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook,
 						   net, sctp_next);
 				break;
 			}
 #ifndef __Panda__
 			/* Shift forward */
 			netfirst = netlook;
 #endif
 		} while (netlook != NULL);
 	}
 	/* got to have a primary set */
 	if (stcb->asoc.primary_destination == 0) {
 		stcb->asoc.primary_destination = net;
 	} else if ((stcb->asoc.primary_destination->ro.ro_rt == NULL) &&
 		    (net->ro.ro_rt) &&
 	    ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
 		/* No route to current primary adopt new primary */
 		stcb->asoc.primary_destination = net;
 	}
 	/* Validate primary is first */
 	net = TAILQ_FIRST(&stcb->asoc.nets);
 	if ((net != stcb->asoc.primary_destination) &&
 	    (stcb->asoc.primary_destination)) {
 		/* first one on the list is NOT the primary
 		 * sctp_cmpaddr() is much more efficient if
 		 * the primary is the first on the list, make it
 		 * so.
 		 */
 		TAILQ_REMOVE(&stcb->asoc.nets,
 			     stcb->asoc.primary_destination, sctp_next);
 		TAILQ_INSERT_HEAD(&stcb->asoc.nets,
 				  stcb->asoc.primary_destination, sctp_next);
 	}
 	return (0);
 }
 static uint32_t
 sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
 {
 	uint32_t id;
 	struct sctpasochead *head;
 	struct sctp_tcb *lstcb;
 	SCTP_INP_WLOCK(inp);
  try_again:
 	if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
 		/* TSNH */
 		SCTP_INP_WUNLOCK(inp);
 		return (0);
 	}
 	/*
 	 * We don't allow assoc id to be one of SCTP_FUTURE_ASSOC,
 	 * SCTP_CURRENT_ASSOC and SCTP_ALL_ASSOC.
 	 */
 	if (inp->sctp_associd_counter <= SCTP_ALL_ASSOC) {
 		inp->sctp_associd_counter = SCTP_ALL_ASSOC + 1;
 	}
 	id = inp->sctp_associd_counter;
 	inp->sctp_associd_counter++;
 	lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t)id, 0);
 	if (lstcb) {
 		goto try_again;
 	}
 	head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
 	LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash);
 	stcb->asoc.in_asocid_hash = 1;
 	SCTP_INP_WUNLOCK(inp);
 	return id;
 }
 /*
  * allocate an association and add it to the endpoint. The caller must be
  * careful to add all additional addresses once they are know right away or
  * else the assoc will be may experience a blackout scenario.
  */
 struct sctp_tcb *
 sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
 		int *error, uint32_t override_tag, uint32_t vrf_id,
 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
 		struct thread *p
 #elif defined(__Windows__)
 		PKTHREAD p
 #else
 #if defined(__Userspace__)
                 /*  __Userspace__ NULL proc is going to be passed here. See sctp_lower_sosend */
 #endif
 		struct proc *p
 #endif
 )
 {
 	/* note the p argument is only valid in unbound sockets */
 	struct sctp_tcb *stcb;
 	struct sctp_association *asoc;
 	struct sctpasochead *head;
 	uint16_t rport;
 	int err;
 	/*
 	 * Assumption made here: Caller has done a
 	 * sctp_findassociation_ep_addr(ep, addr's); to make sure the
 	 * address does not exist already.
 	 */
 	if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) {
 		/* Hit max assoc, sorry no more */
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
 		*error = ENOBUFS;
 		return (NULL);
 	}
 	if (firstaddr == NULL) {
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
 		*error = EINVAL;
 		return (NULL);
 	}
 	SCTP_INP_RLOCK(inp);
 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
 	    ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) ||
 	     (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
 		/*
 		 * If its in the TCP pool, its NOT allowed to create an
 		 * association. The parent listener needs to call
 		 * sctp_aloc_assoc.. or the one-2-many socket. If a peeled
 		 * off, or connected one does this.. its an error.
 		 */
 		SCTP_INP_RUNLOCK(inp);
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
 		*error = EINVAL;
 		return (NULL);
 	}
 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
 	    (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)) {
 		if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) ||
 		    (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED)) {
 			SCTP_INP_RUNLOCK(inp);
 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
 			*error = EINVAL;
 			return (NULL);
 		}
 	}
 	SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:");
 #ifdef SCTP_DEBUG
 	if (firstaddr) {
 		SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr);
 		switch (firstaddr->sa_family) {
 #ifdef INET
 		case AF_INET:
 			SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
 			        ntohs(((struct sockaddr_in *)firstaddr)->sin_port));
 			break;
 #endif
 #ifdef INET6
 		case AF_INET6:
 			SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
 			        ntohs(((struct sockaddr_in6 *)firstaddr)->sin6_port));
 			break;
 #endif
 #if defined(__Userspace__)
 		case AF_CONN:
 			SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
 			        ntohs(((struct sockaddr_conn *)firstaddr)->sconn_port));
 			break;
 #endif
 		default:
 			break;
 		}
 	} else {
 		SCTPDBG(SCTP_DEBUG_PCB3,"None\n");
 	}
 #endif				/* SCTP_DEBUG */
 	switch (firstaddr->sa_family) {
 #ifdef INET
 	case AF_INET:
 	{
 		struct sockaddr_in *sin;
 		sin = (struct sockaddr_in *)firstaddr;
 		if ((ntohs(sin->sin_port) == 0) ||
 		    (sin->sin_addr.s_addr == INADDR_ANY) ||
 		    (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
 		    IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
 			/* Invalid address */
 			SCTP_INP_RUNLOCK(inp);
 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
 			*error = EINVAL;
 			return (NULL);
 		}
 		rport = sin->sin_port;
 		break;
 	}
 #endif
 #ifdef INET6
 	case AF_INET6:
 	{
 		struct sockaddr_in6 *sin6;
 		sin6 = (struct sockaddr_in6 *)firstaddr;
 		if ((ntohs(sin6->sin6_port) == 0) ||
 		    IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
 		    IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
 			/* Invalid address */
 			SCTP_INP_RUNLOCK(inp);
 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
 			*error = EINVAL;
 			return (NULL);
 		}
 		rport = sin6->sin6_port;
 		break;
 	}
 #endif
 #if defined(__Userspace__)
 	case AF_CONN:
 	{
 		struct sockaddr_conn *sconn;
 		sconn = (struct sockaddr_conn *)firstaddr;
 		if ((ntohs(sconn->sconn_port) == 0) ||
 		    (sconn->sconn_addr == NULL)) {
 			/* Invalid address */
 			SCTP_INP_RUNLOCK(inp);
 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
 			*error = EINVAL;
 			return (NULL);
 		}
 		rport = sconn->sconn_port;
 		break;
 	}
 #endif
 	default:
 		/* not supported family type */
 		SCTP_INP_RUNLOCK(inp);
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
 		*error = EINVAL;
 		return (NULL);
 	}
 	SCTP_INP_RUNLOCK(inp);
 	if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
 		/*
 		 * If you have not performed a bind, then we need to do the
 		 * ephemeral bind for you.
 		 */
 		if ((err = sctp_inpcb_bind(inp->sctp_socket,
 		    (struct sockaddr *)NULL,
 		    (struct sctp_ifa *)NULL,
 #ifndef __Panda__
 					   p
 #else
 					   (struct proc *)NULL
 #endif
 		    ))) {
 			/* bind error, probably perm */
 			*error = err;
 			return (NULL);
 		}
 	}
 	stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb);
 	if (stcb == NULL) {
 		/* out of memory? */
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
 		*error = ENOMEM;
 		return (NULL);
 	}
 	SCTP_INCR_ASOC_COUNT();
 	bzero(stcb, sizeof(*stcb));
 	asoc = &stcb->asoc;
 	asoc->assoc_id = sctp_aloc_a_assoc_id(inp, stcb);
 	SCTP_TCB_LOCK_INIT(stcb);
 	SCTP_TCB_SEND_LOCK_INIT(stcb);
 	stcb->rport = rport;
 	/* setup back pointer's */
 	stcb->sctp_ep = inp;
 	stcb->sctp_socket = inp->sctp_socket;
 	if ((err = sctp_init_asoc(inp, stcb, override_tag, vrf_id))) {
 		/* failed */
 		SCTP_TCB_LOCK_DESTROY(stcb);
 		SCTP_TCB_SEND_LOCK_DESTROY(stcb);
 		LIST_REMOVE(stcb, sctp_tcbasocidhash);
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
 		SCTP_DECR_ASOC_COUNT();
 		*error = err;
 		return (NULL);
 	}
 	/* and the port */
 	SCTP_INP_INFO_WLOCK();
 	SCTP_INP_WLOCK(inp);
 	if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
 		/* inpcb freed while alloc going on */
 		SCTP_TCB_LOCK_DESTROY(stcb);
 		SCTP_TCB_SEND_LOCK_DESTROY(stcb);
 		LIST_REMOVE(stcb, sctp_tcbasocidhash);
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
 		SCTP_INP_WUNLOCK(inp);
 		SCTP_INP_INFO_WUNLOCK();
 		SCTP_DECR_ASOC_COUNT();
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
 		*error = EINVAL;
 		return (NULL);
 	}
 	SCTP_TCB_LOCK(stcb);
 	/* now that my_vtag is set, add it to the hash */
 	head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))];
 	/* put it in the bucket in the vtag hash of assoc's for the system */
 	LIST_INSERT_HEAD(head, stcb, sctp_asocs);
 	SCTP_INP_INFO_WUNLOCK();
 	if ((err = sctp_add_remote_addr(stcb, firstaddr, NULL, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC))) {
 		/* failure.. memory error? */
 		if (asoc->strmout) {
 			SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
 			asoc->strmout = NULL;
 		}
 		if (asoc->mapping_array) {
 			SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
 			asoc->mapping_array = NULL;
 		}
 		if (asoc->nr_mapping_array) {
 			SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
 			asoc->nr_mapping_array = NULL;
 		}
 		SCTP_DECR_ASOC_COUNT();
 		SCTP_TCB_UNLOCK(stcb);
 		SCTP_TCB_LOCK_DESTROY(stcb);
 		SCTP_TCB_SEND_LOCK_DESTROY(stcb);
 		LIST_REMOVE(stcb, sctp_tcbasocidhash);
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
 		SCTP_INP_WUNLOCK(inp);
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
 		*error = ENOBUFS;
 		return (NULL);
 	}
 	/* Init all the timers */
 	SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer);
 	SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer);
 	SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer);
 	SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer);
 	SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer);
 	SCTP_OS_TIMER_INIT(&asoc->delayed_event_timer.timer);
 	SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer);
 	LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist);
 	/* now file the port under the hash as well */
 	if (inp->sctp_tcbhash != NULL) {
 		head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport,
 		    inp->sctp_hashmark)];
 		LIST_INSERT_HEAD(head, stcb, sctp_tcbhash);
 	}
 	SCTP_INP_WUNLOCK(inp);
 	SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", (void *)stcb);
 	return (stcb);
 }
 void
 sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
 {
 	struct sctp_association *asoc;
 	asoc = &stcb->asoc;
 	asoc->numnets--;
 	TAILQ_REMOVE(&asoc->nets, net, sctp_next);
 	if (net == asoc->primary_destination) {
 		/* Reset primary */
 		struct sctp_nets *lnet;
 		lnet = TAILQ_FIRST(&asoc->nets);
 		/* Mobility adaptation
 		   Ideally, if deleted destination is the primary, it becomes
 		   a fast retransmission trigger by the subsequent SET PRIMARY.
 		   (by micchie)
 		 */
 		if (sctp_is_mobility_feature_on(stcb->sctp_ep,
 						SCTP_MOBILITY_BASE) ||
 		    sctp_is_mobility_feature_on(stcb->sctp_ep,
 			    			SCTP_MOBILITY_FASTHANDOFF)) {
 			SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n");
 			if (asoc->deleted_primary != NULL) {
 				SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n");
 				goto out;
 			}
 			asoc->deleted_primary = net;
 			atomic_add_int(&net->ref_count, 1);
 			memset(&net->lastsa, 0, sizeof(net->lastsa));
 			memset(&net->lastsv, 0, sizeof(net->lastsv));
 			sctp_mobility_feature_on(stcb->sctp_ep,
 						 SCTP_MOBILITY_PRIM_DELETED);
 			sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED,
 					 stcb->sctp_ep, stcb, NULL);
 		}
 out:
 		/* Try to find a confirmed primary */
 		asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0);
 	}
 	if (net == asoc->last_data_chunk_from) {
 		/* Reset primary */
 		asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets);
 	}
 	if (net == asoc->last_control_chunk_from) {
 		/* Clear net */
 		asoc->last_control_chunk_from = NULL;
 	}
 	if (net == stcb->asoc.alternate) {
 		sctp_free_remote_addr(stcb->asoc.alternate);
 		stcb->asoc.alternate = NULL;
 	}
 	sctp_free_remote_addr(net);
 }
 /*
  * remove a remote endpoint address from an association, it will fail if the
  * address does not exist.
  */
 int
 sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
 {
 	/*
 	 * Here we need to remove a remote address. This is quite simple, we
 	 * first find it in the list of address for the association
 	 * (tasoc->asoc.nets) and then if it is there, we do a LIST_REMOVE
 	 * on that item. Note we do not allow it to be removed if there are
 	 * no other addresses.
 	 */
 	struct sctp_association *asoc;
 	struct sctp_nets *net, *nnet;
 	asoc = &stcb->asoc;
 	/* locate the address */
 	TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
 		if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) {
 			continue;
 		}
 		if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr,
 		    remaddr)) {
 			/* we found the guy */
 			if (asoc->numnets < 2) {
 				/* Must have at LEAST two remote addresses */
 				return (-1);
 			} else {
 				sctp_remove_net(stcb, net);
 				return (0);
 			}
 		}
 	}
 	/* not found. */
 	return (-2);
 }
 void
 sctp_delete_from_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
 {
 	struct sctpvtaghead *chain;
 	struct sctp_tagblock *twait_block;
 	int found = 0;
 	int i;
 	chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
 	LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
 		for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
 		  if ((twait_block->vtag_block[i].v_tag == tag) &&
 		      (twait_block->vtag_block[i].lport == lport) &&
 		      (twait_block->vtag_block[i].rport == rport)) {
 				twait_block->vtag_block[i].tv_sec_at_expire = 0;
 				twait_block->vtag_block[i].v_tag = 0;
 				twait_block->vtag_block[i].lport = 0;
 				twait_block->vtag_block[i].rport = 0;
 				found = 1;
 				break;
 			}
 		}
 		if (found)
 			break;
 	}
 }
 int
 sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
 {
 	struct sctpvtaghead *chain;
 	struct sctp_tagblock *twait_block;
 	int found = 0;
 	int i;
 	SCTP_INP_INFO_WLOCK();
 	chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
 	LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
 		for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
 			if ((twait_block->vtag_block[i].v_tag == tag)  &&
 			    (twait_block->vtag_block[i].lport == lport)  &&
 			    (twait_block->vtag_block[i].rport == rport)) {
 				found = 1;
 				break;
 			}
 		}
 		if (found)
 			break;
 	}
 	SCTP_INP_INFO_WUNLOCK();
 	return (found);
 }
 void
 sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport)
 {
 	struct sctpvtaghead *chain;
 	struct sctp_tagblock *twait_block;
 	struct timeval now;
 	int set, i;
 	if (time == 0) {
 		/* Its disabled */
 		return;
 	}
 	(void)SCTP_GETTIME_TIMEVAL(&now);
 	chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
 	set = 0;
 	LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
 		/* Block(s) present, lets find space, and expire on the fly */
 		for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
 			if ((twait_block->vtag_block[i].v_tag == 0) &&
 			    !set) {
 				twait_block->vtag_block[i].tv_sec_at_expire =
 					now.tv_sec + time;
 				twait_block->vtag_block[i].v_tag = tag;
 				twait_block->vtag_block[i].lport = lport;
 				twait_block->vtag_block[i].rport = rport;
 				set = 1;
 			} else if ((twait_block->vtag_block[i].v_tag) &&
 				    ((long)twait_block->vtag_block[i].tv_sec_at_expire < now.tv_sec)) {
 				/* Audit expires this guy */
 				twait_block->vtag_block[i].tv_sec_at_expire = 0;
 				twait_block->vtag_block[i].v_tag = 0;
 				twait_block->vtag_block[i].lport = 0;
 				twait_block->vtag_block[i].rport = 0;
 				if (set == 0) {
 					/* Reuse it for my new tag */
 					twait_block->vtag_block[i].tv_sec_at_expire = now.tv_sec + time;
 					twait_block->vtag_block[i].v_tag = tag;
 					twait_block->vtag_block[i].lport = lport;
 					twait_block->vtag_block[i].rport = rport;
 					set = 1;
 				}
 			}
 		}
 		if (set) {
 			/*
 			 * We only do up to the block where we can
 			 * place our tag for audits
 			 */
 			break;
 		}
 	}
 	/* Need to add a new block to chain */
 	if (!set) {
 		SCTP_MALLOC(twait_block, struct sctp_tagblock *,
 		    sizeof(struct sctp_tagblock), SCTP_M_TIMW);
 		if (twait_block == NULL) {
 #ifdef INVARIANTS
 			panic("Can not alloc tagblock");
 #endif
 			return;
 		}
 		memset(twait_block, 0, sizeof(struct sctp_tagblock));
 		LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock);
 		twait_block->vtag_block[0].tv_sec_at_expire = now.tv_sec + time;
 		twait_block->vtag_block[0].v_tag = tag;
 		twait_block->vtag_block[0].lport = lport;
 		twait_block->vtag_block[0].rport = rport;
 	}
 }
 #ifdef __Panda__
 void panda_wakeup_socket(struct socket *so);
 #endif
 /*-
  * Free the association after un-hashing the remote port. This
  * function ALWAYS returns holding NO LOCK on the stcb. It DOES
  * expect that the input to this function IS a locked TCB.
  * It will return 0, if it did NOT destroy the association (instead
  * it unlocks it. It will return NON-zero if it either destroyed the
  * association OR the association is already destroyed.
  */
 int
 sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
 {
 	int i;
 	struct sctp_association *asoc;
 	struct sctp_nets *net, *nnet;
 	struct sctp_laddr *laddr, *naddr;
 	struct sctp_tmit_chunk *chk, *nchk;
 	struct sctp_asconf_addr *aparam, *naparam;
 	struct sctp_asconf_ack *aack, *naack;
 	struct sctp_stream_reset_list *strrst, *nstrrst;
 	struct sctp_queued_to_read *sq, *nsq;
 	struct sctp_stream_queue_pending *sp, *nsp;
 	sctp_sharedkey_t *shared_key, *nshared_key;
 	struct socket *so;
 	/* first, lets purge the entry from the hash table. */
 #if defined(__APPLE__)
 	sctp_lock_assert(SCTP_INP_SO(inp));
 #endif
 #ifdef SCTP_LOG_CLOSING
 	sctp_log_closing(inp, stcb, 6);
 #endif
 	if (stcb->asoc.state == 0) {
 #ifdef SCTP_LOG_CLOSING
 		sctp_log_closing(inp, NULL, 7);
 #endif
 		/* there is no asoc, really TSNH :-0 */
 		return (1);
 	}
 	if (stcb->asoc.alternate) {
 		sctp_free_remote_addr(stcb->asoc.alternate);
 		stcb->asoc.alternate = NULL;
 	}
 #if !defined(__APPLE__) /* TEMP: moved to below */
         /* TEMP CODE */
 	if (stcb->freed_from_where == 0) {
 		/* Only record the first place free happened from */
 		stcb->freed_from_where = from_location;
 	}
         /* TEMP CODE */
 #endif
 	asoc = &stcb->asoc;
 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
 	    (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
 		/* nothing around */
 		so = NULL;
 	else
 		so = inp->sctp_socket;
 	/*
 	 * We used timer based freeing if a reader or writer is in the way.
 	 * So we first check if we are actually being called from a timer,
 	 * if so we abort early if a reader or writer is still in the way.
 	 */
 	if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
 	    (from_inpcbfree == SCTP_NORMAL_PROC)) {
 		/*
 		 * is it the timer driving us? if so are the reader/writers
 		 * gone?
 		 */
 		if (stcb->asoc.refcnt) {
 			/* nope, reader or writer in the way */
 			sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
 			/* no asoc destroyed */
 			SCTP_TCB_UNLOCK(stcb);
 #ifdef SCTP_LOG_CLOSING
 			sctp_log_closing(inp, stcb, 8);
 #endif
 			return (0);
 		}
 	}
 	/* now clean up any other timers */
 	(void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
 	asoc->dack_timer.self = NULL;
 	(void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
 	/*-
 	 * For stream reset we don't blast this unless
 	 * it is a str-reset timer, it might be the
 	 * free-asoc timer which we DON'T want to
 	 * disturb.
 	 */
 	if (asoc->strreset_timer.type == SCTP_TIMER_TYPE_STRRESET)
 		asoc->strreset_timer.self = NULL;
 	(void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
 	asoc->asconf_timer.self = NULL;
 	(void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
 	asoc->autoclose_timer.self = NULL;
 	(void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
 	asoc->shut_guard_timer.self = NULL;
 	(void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
 	asoc->delayed_event_timer.self = NULL;
 	/* Mobility adaptation */
 	(void)SCTP_OS_TIMER_STOP(&asoc->delete_prim_timer.timer);
 	asoc->delete_prim_timer.self = NULL;
 	TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
 		(void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
 		net->rxt_timer.self = NULL;
 		(void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
 		net->pmtu_timer.self = NULL;
 		(void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
 		net->hb_timer.self = NULL;
 	}
 	/* Now the read queue needs to be cleaned up (only once) */
 	if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) {
 		stcb->asoc.state |= SCTP_STATE_ABOUT_TO_BE_FREED;
 		SCTP_INP_READ_LOCK(inp);
 		TAILQ_FOREACH(sq, &inp->read_queue, next) {
 			if (sq->stcb == stcb) {
 				sq->do_not_ref_stcb = 1;
 				sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
 				/* If there is no end, there never
 				 * will be now.
 				 */
 				if (sq->end_added == 0) {
 					/* Held for PD-API clear that. */
 					sq->pdapi_aborted = 1;
 					sq->held_length = 0;
 					if (sctp_stcb_is_feature_on(inp, stcb, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) {
 						/*
 						 * Need to add a PD-API aborted indication.
 						 * Setting the control_pdapi assures that it will
 						 * be added right after this msg.
 						 */
 						uint32_t strseq;
 						stcb->asoc.control_pdapi = sq;
 						strseq = (sq->sinfo_stream << 16) | sq->sinfo_ssn;
 						sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION,
 						                stcb,
 						                SCTP_PARTIAL_DELIVERY_ABORTED,
 						                (void *)&strseq,
 						                SCTP_SO_LOCKED);
 						stcb->asoc.control_pdapi = NULL;
 					}
 				}
 				/* Add an end to wake them */
 				sq->end_added = 1;
 			}
 		}
 		SCTP_INP_READ_UNLOCK(inp);
 		if (stcb->block_entry) {
 			SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET);
 			stcb->block_entry->error = ECONNRESET;
 			stcb->block_entry = NULL;
 		}
 	}
 	if ((stcb->asoc.refcnt) || (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE)) {
 		/* Someone holds a reference OR the socket is unaccepted yet.
 		*/
 		if ((stcb->asoc.refcnt)  ||
 		    (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
 		    (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
 			stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
 			sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
 		}
 		SCTP_TCB_UNLOCK(stcb);
 		if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
 		    (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
 			/* nothing around */
 			so = NULL;
 		if (so) {
 			/* Wake any reader/writers */
 			sctp_sorwakeup(inp, so);
 			sctp_sowwakeup(inp, so);
 		}
 #ifdef SCTP_LOG_CLOSING
 		sctp_log_closing(inp, stcb, 9);
 #endif
 		/* no asoc destroyed */
 		return (0);
 	}
 #ifdef SCTP_LOG_CLOSING
 	sctp_log_closing(inp, stcb, 10);
 #endif
 	/* When I reach here, no others want
 	 * to kill the assoc yet.. and I own
 	 * the lock. Now its possible an abort
 	 * comes in when I do the lock exchange
 	 * below to grab all the locks to do
 	 * the final take out. to prevent this
 	 * we increment the count, which will
 	 * start a timer and blow out above thus
 	 * assuring us that we hold exclusive
 	 * killing of the asoc. Note that
 	 * after getting back the TCB lock
 	 * we will go ahead and increment the
 	 * counter back up and stop any timer
 	 * a passing stranger may have started :-S
 	 */
 	if (from_inpcbfree == SCTP_NORMAL_PROC) {
 		atomic_add_int(&stcb->asoc.refcnt, 1);
 		SCTP_TCB_UNLOCK(stcb);
 		SCTP_INP_INFO_WLOCK();
 		SCTP_INP_WLOCK(inp);
 		SCTP_TCB_LOCK(stcb);
 	}
 	/* Double check the GONE flag */
 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
 	    (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
 		/* nothing around */
 		so = NULL;
 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
 	    (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
 		/*
 		 * For TCP type we need special handling when we are
 		 * connected. We also include the peel'ed off ones to.
 		 */
 		if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
 			inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED;
 			inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED;
 			if (so) {
 				SOCK_LOCK(so);
 				if (so->so_rcv.sb_cc == 0) {
 					so->so_state &= ~(SS_ISCONNECTING |
 							  SS_ISDISCONNECTING |
 							  SS_ISCONFIRMING |
 							  SS_ISCONNECTED);
 				}
 #if defined(__APPLE__)
 				socantrcvmore(so);
 #else
 				socantrcvmore_locked(so);
 #endif
 				sctp_sowwakeup(inp, so);
 				sctp_sorwakeup(inp, so);
 				SCTP_SOWAKEUP(so);
 			}
 		}
 	}
 	/* Make it invalid too, that way if its
 	 * about to run it will abort and return.
 	 */
 	/* re-increment the lock */
 	if (from_inpcbfree == SCTP_NORMAL_PROC) {
 		atomic_add_int(&stcb->asoc.refcnt, -1);
 	}
 	if (stcb->asoc.refcnt) {
 		stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
 		sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
 		if (from_inpcbfree == SCTP_NORMAL_PROC) {
 			SCTP_INP_INFO_WUNLOCK();
 			SCTP_INP_WUNLOCK(inp);
 		}
 		SCTP_TCB_UNLOCK(stcb);
 		return (0);
 	}
 	asoc->state = 0;
 	if (inp->sctp_tcbhash) {
 		LIST_REMOVE(stcb, sctp_tcbhash);
 	}
 	if (stcb->asoc.in_asocid_hash) {
 		LIST_REMOVE(stcb, sctp_tcbasocidhash);
 	}
 	/* Now lets remove it from the list of ALL associations in the EP */
 	LIST_REMOVE(stcb, sctp_tcblist);
 	if (from_inpcbfree == SCTP_NORMAL_PROC) {
 		SCTP_INP_INCR_REF(inp);
 		SCTP_INP_WUNLOCK(inp);
 	}
 	/* pull from vtag hash */
 	LIST_REMOVE(stcb, sctp_asocs);
 	sctp_add_vtag_to_timewait(asoc->my_vtag, SCTP_BASE_SYSCTL(sctp_vtag_time_wait),
 				  inp->sctp_lport, stcb->rport);
 	/* Now restop the timers to be sure
 	 * this is paranoia at is finest!
 	 */
 	(void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
 	(void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
 	(void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
 	(void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
 	(void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
 	(void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
 	(void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
 	TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
 		(void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
 		(void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
 		(void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
 	}
 	asoc->strreset_timer.type = SCTP_TIMER_TYPE_NONE;
 	/*
 	 * The chunk lists and such SHOULD be empty but we check them just
 	 * in case.
 	 */
 	/* anything on the wheel needs to be removed */
 	for (i = 0; i < asoc->streamoutcnt; i++) {
 		struct sctp_stream_out *outs;
 		outs = &asoc->strmout[i];
 		/* now clean up any chunks here */
 		TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
 			TAILQ_REMOVE(&outs->outqueue, sp, next);
 			sctp_free_spbufspace(stcb, asoc, sp);
 			if (sp->data) {
 				if (so) {
 					/* Still an open socket - report */
 					sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
 , (void *)sp, SCTP_SO_LOCKED);
 				}
 				if (sp->data) {
 					sctp_m_freem(sp->data);
 					sp->data = NULL;
 					sp->tail_mbuf = NULL;
 					sp->length = 0;
 				}
 			}
 			if (sp->net) {
 				sctp_free_remote_addr(sp->net);
 				sp->net = NULL;
 			}
 			sctp_free_a_strmoq(stcb, sp, SCTP_SO_LOCKED);
 		}
 	}
 	/*sa_ignore FREED_MEMORY*/
 	TAILQ_FOREACH_SAFE(strrst, &asoc->resetHead, next_resp, nstrrst) {
 		TAILQ_REMOVE(&asoc->resetHead, strrst, next_resp);
 		SCTP_FREE(strrst, SCTP_M_STRESET);
 	}
 	TAILQ_FOREACH_SAFE(sq, &asoc->pending_reply_queue, next, nsq) {
 		TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
 		if (sq->data) {
 			sctp_m_freem(sq->data);
 			sq->data = NULL;
 		}
 		sctp_free_remote_addr(sq->whoFrom);
 		sq->whoFrom = NULL;
 		sq->stcb = NULL;
 		/* Free the ctl entry */
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
 		SCTP_DECR_READQ_COUNT();
 		/*sa_ignore FREED_MEMORY*/
 	}
 	TAILQ_FOREACH_SAFE(chk, &asoc->free_chunks, sctp_next, nchk) {
 		TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next);
 		if (chk->data) {
 			sctp_m_freem(chk->data);
 			chk->data = NULL;
 		}
 		if (chk->holds_key_ref)
 			sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
 		SCTP_DECR_CHK_COUNT();
 		atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1);
 		asoc->free_chunk_cnt--;
 		/*sa_ignore FREED_MEMORY*/
 	}
 	/* pending send queue SHOULD be empty */
 	TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
 		if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
 			asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
 #ifdef INVARIANTS
 		} else {
 			panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
 #endif
 		}
 		TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
 		if (chk->data) {
 			if (so) {
 				/* Still a socket? */
 				sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
 , chk, SCTP_SO_LOCKED);
 			}
 			if (chk->data) {
 				sctp_m_freem(chk->data);
 				chk->data = NULL;
 			}
 		}
 		if (chk->holds_key_ref)
 			sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
 		if (chk->whoTo) {
 			sctp_free_remote_addr(chk->whoTo);
 			chk->whoTo = NULL;
 		}
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
 		SCTP_DECR_CHK_COUNT();
 		/*sa_ignore FREED_MEMORY*/
 	}
 	/* sent queue SHOULD be empty */
 	TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
 		if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
 			if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
 				asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
 #ifdef INVARIANTS
 			} else {
 				panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
 #endif
 			}
 		}
 		TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
 		if (chk->data) {
 			if (so) {
 				/* Still a socket? */
 				sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
 , chk, SCTP_SO_LOCKED);
 			}
 			if (chk->data) {
 				sctp_m_freem(chk->data);
 				chk->data = NULL;
 			}
 		}
 		if (chk->holds_key_ref)
 			sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
 		sctp_free_remote_addr(chk->whoTo);
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
 		SCTP_DECR_CHK_COUNT();
 		/*sa_ignore FREED_MEMORY*/
 	}
 #ifdef INVARIANTS
 	for (i = 0; i < stcb->asoc.streamoutcnt; i++) {
 		if (stcb->asoc.strmout[i].chunks_on_queues > 0) {
 			panic("%u chunks left for stream %u.", stcb->asoc.strmout[i].chunks_on_queues, i);
 		}
 	}
 #endif
 	/* control queue MAY not be empty */
 	TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) {
 		TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next);
 		if (chk->data) {
 			sctp_m_freem(chk->data);
 			chk->data = NULL;
 		}
 		if (chk->holds_key_ref)
 			sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
 		sctp_free_remote_addr(chk->whoTo);
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
 		SCTP_DECR_CHK_COUNT();
 		/*sa_ignore FREED_MEMORY*/
 	}
 	/* ASCONF queue MAY not be empty */
 	TAILQ_FOREACH_SAFE(chk, &asoc->asconf_send_queue, sctp_next, nchk) {
 		TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next);
 		if (chk->data) {
 			sctp_m_freem(chk->data);
 			chk->data = NULL;
 		}
 		if (chk->holds_key_ref)
 			sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
 		sctp_free_remote_addr(chk->whoTo);
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
 		SCTP_DECR_CHK_COUNT();
 		/*sa_ignore FREED_MEMORY*/
 	}
 	TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) {
 		TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
 		if (chk->data) {
 			sctp_m_freem(chk->data);
 			chk->data = NULL;
 		}
 		if (chk->holds_key_ref)
 			sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
 		sctp_free_remote_addr(chk->whoTo);
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
 		SCTP_DECR_CHK_COUNT();
 		/*sa_ignore FREED_MEMORY*/
 	}
 	if (asoc->mapping_array) {
 		SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
 		asoc->mapping_array = NULL;
 	}
 	if (asoc->nr_mapping_array) {
 		SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
 		asoc->nr_mapping_array = NULL;
 	}
 	/* the stream outs */
 	if (asoc->strmout) {
 		SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
 		asoc->strmout = NULL;
 	}
 	asoc->strm_realoutsize = asoc->streamoutcnt = 0;
 	if (asoc->strmin) {
 		struct sctp_queued_to_read *ctl, *nctl;
 		for (i = 0; i < asoc->streamincnt; i++) {
 			TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[i].inqueue, next, nctl) {
 				TAILQ_REMOVE(&asoc->strmin[i].inqueue, ctl, next);
 				sctp_free_remote_addr(ctl->whoFrom);
 				if (ctl->data) {
 					sctp_m_freem(ctl->data);
 					ctl->data = NULL;
 				}
 				/*
 				 * We don't free the address here
 				 * since all the net's were freed
 				 * above.
 				 */
 				SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
 				SCTP_DECR_READQ_COUNT();
 			}
 		}
 		SCTP_FREE(asoc->strmin, SCTP_M_STRMI);
 		asoc->strmin = NULL;
 	}
 	asoc->streamincnt = 0;
 	TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
 #ifdef INVARIANTS
 		if (SCTP_BASE_INFO(ipi_count_raddr) == 0) {
 			panic("no net's left alloc'ed, or list points to itself");
 		}
 #endif
 		TAILQ_REMOVE(&asoc->nets, net, sctp_next);
 		sctp_free_remote_addr(net);
 	}
 	LIST_FOREACH_SAFE(laddr, &asoc->sctp_restricted_addrs, sctp_nxt_addr, naddr) {
 		/*sa_ignore FREED_MEMORY*/
 		sctp_remove_laddr(laddr);
 	}
 	/* pending asconf (address) parameters */
 	TAILQ_FOREACH_SAFE(aparam, &asoc->asconf_queue, next, naparam) {
 		/*sa_ignore FREED_MEMORY*/
 		TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
 		SCTP_FREE(aparam,SCTP_M_ASC_ADDR);
 	}
 	TAILQ_FOREACH_SAFE(aack, &asoc->asconf_ack_sent, next, naack) {
 		/*sa_ignore FREED_MEMORY*/
 		TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
 		if (aack->data != NULL) {
 			sctp_m_freem(aack->data);
 		}
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
 	}
 	/* clean up auth stuff */
 	if (asoc->local_hmacs)
 		sctp_free_hmaclist(asoc->local_hmacs);
 	if (asoc->peer_hmacs)
 		sctp_free_hmaclist(asoc->peer_hmacs);
 	if (asoc->local_auth_chunks)
 		sctp_free_chunklist(asoc->local_auth_chunks);
 	if (asoc->peer_auth_chunks)
 		sctp_free_chunklist(asoc->peer_auth_chunks);
 	sctp_free_authinfo(&asoc->authinfo);
 	LIST_FOREACH_SAFE(shared_key, &asoc->shared_keys, next, nshared_key) {
 		LIST_REMOVE(shared_key, next);
 		sctp_free_sharedkey(shared_key);
 		/*sa_ignore FREED_MEMORY*/
 	}
 	/* Insert new items here :> */
 	/* Get rid of LOCK */
 	SCTP_TCB_UNLOCK(stcb);
 	SCTP_TCB_LOCK_DESTROY(stcb);
 	SCTP_TCB_SEND_LOCK_DESTROY(stcb);
 	if (from_inpcbfree == SCTP_NORMAL_PROC) {
 		SCTP_INP_INFO_WUNLOCK();
 		SCTP_INP_RLOCK(inp);
 	}
 #if defined(__APPLE__) /* TEMP CODE */
 	stcb->freed_from_where = from_location;
 #endif
 #ifdef SCTP_TRACK_FREED_ASOCS
 	if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
 		/* now clean up the tasoc itself */
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
 		SCTP_DECR_ASOC_COUNT();
 	} else {
 		LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist);
 	}
 #else
 	SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
 	SCTP_DECR_ASOC_COUNT();
 #endif
 	if (from_inpcbfree == SCTP_NORMAL_PROC) {
 		if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
 			/* If its NOT the inp_free calling us AND
 			 * sctp_close as been called, we
 			 * call back...
 			 */
 			SCTP_INP_RUNLOCK(inp);
 			/* This will start the kill timer (if we are
 			 * the last one) since we hold an increment yet. But
 			 * this is the only safe way to do this
 			 * since otherwise if the socket closes
 			 * at the same time we are here we might
 			 * collide in the cleanup.
 			 */
 			sctp_inpcb_free(inp,
 					SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
 					SCTP_CALLED_DIRECTLY_NOCMPSET);
 			SCTP_INP_DECR_REF(inp);
 			goto out_of;
 		} else {
 			/* The socket is still open. */
 			SCTP_INP_DECR_REF(inp);
 		}
 	}
 	if (from_inpcbfree == SCTP_NORMAL_PROC) {
 		SCTP_INP_RUNLOCK(inp);
 	}
  out_of:
 	/* destroyed the asoc */
 #ifdef SCTP_LOG_CLOSING
 	sctp_log_closing(inp, NULL, 11);
 #endif
 	return (1);
 }
 /*
  * determine if a destination is "reachable" based upon the addresses bound
  * to the current endpoint (e.g. only v4 or v6 currently bound)
  */
 /*
  * FIX: if we allow assoc-level bindx(), then this needs to be fixed to use
  * assoc level v4/v6 flags, as the assoc *may* not have the same address
  * types bound as its endpoint
  */
 int
 sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
 {
 	struct sctp_inpcb *inp;
 	int answer;
 	/*
 	 * No locks here, the TCB, in all cases is already locked and an
 	 * assoc is up. There is either a INP lock by the caller applied (in
 	 * asconf case when deleting an address) or NOT in the HB case,
 	 * however if HB then the INP increment is up and the INP will not
 	 * be removed (on top of the fact that we have a TCB lock). So we
 	 * only want to read the sctp_flags, which is either bound-all or
 	 * not.. no protection needed since once an assoc is up you can't be
 	 * changing your binding.
 	 */
 	inp = stcb->sctp_ep;
 	if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 		/* if bound all, destination is not restricted */
 		/*
 		 * RRS: Question during lock work: Is this correct? If you
 		 * are bound-all you still might need to obey the V4--V6
 		 * flags??? IMO this bound-all stuff needs to be removed!
 		 */
 		return (1);
 	}
 	/* NOTE: all "scope" checks are done when local addresses are added */
 	switch (destaddr->sa_family) {
 #ifdef INET6
 	case AF_INET6:
 #if !(defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__))
 		answer = inp->inp_vflag & INP_IPV6;
 #else
 		answer = inp->ip_inp.inp.inp_vflag & INP_IPV6;
 #endif
 		break;
 #endif
 #ifdef INET
 	case AF_INET:
 #if !(defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__))
 		answer = inp->inp_vflag & INP_IPV4;
 #else
 		answer = inp->ip_inp.inp.inp_vflag & INP_IPV4;
 #endif
 		break;
 #endif
 #if defined(__Userspace__)
 	case AF_CONN:
 		answer = inp->ip_inp.inp.inp_vflag & INP_CONN;
 		break;
 #endif
 	default:
 		/* invalid family, so it's unreachable */
 		answer = 0;
 		break;
 	}
 	return (answer);
 }
 /*
  * update the inp_vflags on an endpoint
  */
 static void
 sctp_update_ep_vflag(struct sctp_inpcb *inp)
 {
 	struct sctp_laddr *laddr;
 	/* first clear the flag */
 #if !(defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__))
 	inp->inp_vflag = 0;
 #else
 	inp->ip_inp.inp.inp_vflag = 0;
 #endif
 	/* set the flag based on addresses on the ep list */
 	LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
 		if (laddr->ifa == NULL) {
 			SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
 				__FUNCTION__);
 			continue;
 		}
 		if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
 			continue;
 		}
 		switch (laddr->ifa->address.sa.sa_family) {
 #ifdef INET6
 		case AF_INET6:
 #if !(defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__))
 			inp->inp_vflag |= INP_IPV6;
 #else
 			inp->ip_inp.inp.inp_vflag |= INP_IPV6;
 #endif
 			break;
 #endif
 #ifdef INET
 		case AF_INET:
 #if !(defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__))
 			inp->inp_vflag |= INP_IPV4;
 #else
 			inp->ip_inp.inp.inp_vflag |= INP_IPV4;
 #endif
 			break;
 #endif
 #if defined(__Userspace__)
 		case AF_CONN:
 			inp->ip_inp.inp.inp_vflag |= INP_CONN;
 			break;
 #endif
 		default:
 			break;
 		}
 	}
 }
 /*
  * Add the address to the endpoint local address list There is nothing to be
  * done if we are bound to all addresses
  */
 void
 sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
 {
 	struct sctp_laddr *laddr;
 	int fnd, error = 0;
 	fnd = 0;
 	if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 		/* You are already bound to all. You have it already */
 		return;
 	}
 #ifdef INET6
 	if (ifa->address.sa.sa_family == AF_INET6) {
 		if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
 			/* Can't bind a non-useable addr. */
 			return;
 		}
 	}
 #endif
 	/* first, is it already present? */
 	LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
 		if (laddr->ifa == ifa) {
 			fnd = 1;
 			break;
 		}
 	}
 	if (fnd == 0) {
 		/* Not in the ep list */
 		error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action);
 		if (error != 0)
 			return;
 		inp->laddr_count++;
 		/* update inp_vflag flags */
 		switch (ifa->address.sa.sa_family) {
 #ifdef INET6
 		case AF_INET6:
 #if !(defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__))
 			inp->inp_vflag |= INP_IPV6;
 #else
 			inp->ip_inp.inp.inp_vflag |= INP_IPV6;
 #endif
 			break;
 #endif
 #ifdef INET
 		case AF_INET:
 #if !(defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__))
 			inp->inp_vflag |= INP_IPV4;
 #else
 			inp->ip_inp.inp.inp_vflag |= INP_IPV4;
 #endif
 			break;
 #endif
 #if defined(__Userspace__)
 		case AF_CONN:
 			inp->ip_inp.inp.inp_vflag |= INP_CONN;
 			break;
 #endif
 		default:
 			break;
 		}
 	}
 	return;
 }
 /*
  * select a new (hopefully reachable) destination net (should only be used
  * when we deleted an ep addr that is the only usable source address to reach
  * the destination net)
  */
 static void
 sctp_select_primary_destination(struct sctp_tcb *stcb)
 {
 	struct sctp_nets *net;
 	TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 		/* for now, we'll just pick the first reachable one we find */
 		if (net->dest_state & SCTP_ADDR_UNCONFIRMED)
 			continue;
 		if (sctp_destination_is_reachable(stcb,
 		    (struct sockaddr *)&net->ro._l_addr)) {
 			/* found a reachable destination */
 			stcb->asoc.primary_destination = net;
 		}
 	}
 	/* I can't there from here! ...we're gonna die shortly... */
 }
 /*
  * Delete the address from the endpoint local address list There is nothing
  * to be done if we are bound to all addresses
  */
 void
 sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa)
 {
 	struct sctp_laddr *laddr;
 	int fnd;
 	fnd = 0;
 	if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 		/* You are already bound to all. You have it already */
 		return;
 	}
 	LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
 		if (laddr->ifa == ifa) {
 			fnd = 1;
 			break;
 		}
 	}
 	if (fnd && (inp->laddr_count < 2)) {
 		/* can't delete unless there are at LEAST 2 addresses */
 		return;
 	}
 	if (fnd) {
 		/*
 		 * clean up any use of this address go through our
 		 * associations and clear any last_used_address that match
 		 * this one for each assoc, see if a new primary_destination
 		 * is needed
 		 */
 		struct sctp_tcb *stcb;
 		/* clean up "next_addr_touse" */
 		if (inp->next_addr_touse == laddr)
 			/* delete this address */
 			inp->next_addr_touse = NULL;
 		/* clean up "last_used_address" */
 		LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
 			struct sctp_nets *net;
 			SCTP_TCB_LOCK(stcb);
 			if (stcb->asoc.last_used_address == laddr)
 				/* delete this address */
 				stcb->asoc.last_used_address = NULL;
 			/* Now spin through all the nets and purge any ref to laddr */
 			TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 				if (net->ro._s_addr &&
 				    (net->ro._s_addr->ifa == laddr->ifa)) {
 					/* Yep, purge src address selected */
 					sctp_rtentry_t *rt;
 					/* delete this address if cached */
 					rt = net->ro.ro_rt;
 					if (rt != NULL) {
 						RTFREE(rt);
 						net->ro.ro_rt = NULL;
 					}
 					sctp_free_ifa(net->ro._s_addr);
 					net->ro._s_addr = NULL;
 					net->src_addr_selected = 0;
 				}
 			}
 			SCTP_TCB_UNLOCK(stcb);
 		}		/* for each tcb */
 		/* remove it from the ep list */
 		sctp_remove_laddr(laddr);
 		inp->laddr_count--;
 		/* update inp_vflag flags */
 		sctp_update_ep_vflag(inp);
 	}
 	return;
 }
 /*
  * Add the address to the TCB local address restricted list.
  * This is a "pending" address list (eg. addresses waiting for an
  * ASCONF-ACK response) and cannot be used as a valid source address.
  */
 void
 sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
 {
 	struct sctp_laddr *laddr;
 	struct sctpladdr *list;
 	/*
 	 * Assumes TCB is locked.. and possibly the INP. May need to
 	 * confirm/fix that if we need it and is not the case.
 	 */
 	list = &stcb->asoc.sctp_restricted_addrs;
 #ifdef INET6
 	if (ifa->address.sa.sa_family == AF_INET6) {
 		if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
 			/* Can't bind a non-existent addr. */
 			return;
 		}
 	}
 #endif
 	/* does the address already exist? */
 	LIST_FOREACH(laddr, list, sctp_nxt_addr) {
 		if (laddr->ifa == ifa) {
 			return;
 		}
 	}
 	/* add to the list */
 	(void)sctp_insert_laddr(list, ifa, 0);
 	return;
 }
 /*
  * insert an laddr entry with the given ifa for the desired list
  */
 int
 sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
 {
 	struct sctp_laddr *laddr;
 	laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
 	if (laddr == NULL) {
 		/* out of memory? */
 		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
 		return (EINVAL);
 	}
 	SCTP_INCR_LADDR_COUNT();
 	bzero(laddr, sizeof(*laddr));
 	(void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
 	laddr->ifa = ifa;
 	laddr->action = act;
 	atomic_add_int(&ifa->refcount, 1);
 	/* insert it */
 	LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr);
 	return (0);
 }
 /*
  * Remove an laddr entry from the local address list (on an assoc)
  */
 void
 sctp_remove_laddr(struct sctp_laddr *laddr)
 {
 	/* remove from the list */
 	LIST_REMOVE(laddr, sctp_nxt_addr);
 	sctp_free_ifa(laddr->ifa);
 	SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr);
 	SCTP_DECR_LADDR_COUNT();
 }
 /*
  * Remove a local address from the TCB local address restricted list
  */
 void
 sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
 {
 	struct sctp_inpcb *inp;
 	struct sctp_laddr *laddr;
 	/*
 	 * This is called by asconf work. It is assumed that a) The TCB is
 	 * locked and b) The INP is locked. This is true in as much as I can
 	 * trace through the entry asconf code where I did these locks.
 	 * Again, the ASCONF code is a bit different in that it does lock
 	 * the INP during its work often times. This must be since we don't
 	 * want other proc's looking up things while what they are looking
 	 * up is changing :-D
 	 */
 	inp = stcb->sctp_ep;
 	/* if subset bound and don't allow ASCONF's, can't delete last */
 	if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
 	    sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
 		if (stcb->sctp_ep->laddr_count < 2) {
 			/* can't delete last address */
 			return;
 		}
 	}
 	LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
 		/* remove the address if it exists */
 		if (laddr->ifa == NULL)
 			continue;
 		if (laddr->ifa == ifa) {
 			sctp_remove_laddr(laddr);
 			return;
 		}
 	}
 	/* address not found! */
 	return;
 }
 #if defined(__FreeBSD__)
 /*
  * Temporarily remove for __APPLE__ until we use the Tiger equivalents
  */
 /* sysctl */
 static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;
 static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR;
 #endif				/* FreeBSD || APPLE */
 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
 struct sctp_mcore_ctrl *sctp_mcore_workers = NULL;
 int *sctp_cpuarry = NULL;
 void
 sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use)
 {
 	/* Queue a packet to a processor for the specified core */
 	struct sctp_mcore_queue *qent;
 	struct sctp_mcore_ctrl *wkq;
 	int need_wake = 0;
 	if (sctp_mcore_workers == NULL) {
 		/* Something went way bad during setup */
 		sctp_input_with_port(m, off, 0);
 		return;
 	}
 	SCTP_MALLOC(qent, struct sctp_mcore_queue *,
 		    (sizeof(struct sctp_mcore_queue)),
 		    SCTP_M_MCORE);
 	if (qent == NULL) {
 		/* This is trouble  */
 		sctp_input_with_port(m, off, 0);
 		return;
 	}
 #if defined(__FreeBSD__) && __FreeBSD_version >= 801000
 	qent->vn = curvnet;
 #endif
 	qent->m = m;
 	qent->off = off;
 	qent->v6 = 0;
 	wkq = &sctp_mcore_workers[cpu_to_use];
 	SCTP_MCORE_QLOCK(wkq);
 	TAILQ_INSERT_TAIL(&wkq->que, qent, next);
 	if (wkq->running == 0) {
 		need_wake = 1;
 	}
 	SCTP_MCORE_QUNLOCK(wkq);
 	if (need_wake) {
 		wakeup(&wkq->running);
 	}
 }
 static void
 sctp_mcore_thread(void *arg)
 {
 	struct sctp_mcore_ctrl *wkq;
 	struct sctp_mcore_queue *qent;
 	wkq = (struct sctp_mcore_ctrl *)arg;
 	struct mbuf *m;
 	int off, v6;
 	/* Wait for first tickle */
 	SCTP_MCORE_LOCK(wkq);
 	wkq->running = 0;
 	msleep(&wkq->running,
 	       &wkq->core_mtx,
 , "wait for pkt", 0);
 	SCTP_MCORE_UNLOCK(wkq);
 	/* Bind to our cpu */
 	thread_lock(curthread);
 	sched_bind(curthread, wkq->cpuid);
 	thread_unlock(curthread);
 	/* Now lets start working */
 	SCTP_MCORE_LOCK(wkq);
 	/* Now grab lock and go */
 	for (;;) {
 		SCTP_MCORE_QLOCK(wkq);
 	skip_sleep:
 		wkq->running = 1;
 		qent = TAILQ_FIRST(&wkq->que);
 		if (qent) {
 			TAILQ_REMOVE(&wkq->que, qent, next);
 			SCTP_MCORE_QUNLOCK(wkq);
 #if defined(__FreeBSD__) && __FreeBSD_version >= 801000
 			CURVNET_SET(qent->vn);
 #endif
 			m = qent->m;
 			off = qent->off;
 			v6 = qent->v6;
 			SCTP_FREE(qent, SCTP_M_MCORE);
 			if (v6 == 0) {
 				sctp_input_with_port(m, off, 0);
 			} else {
 				SCTP_PRINTF("V6 not yet supported\n");
 				sctp_m_freem(m);
 			}
 #if defined(__FreeBSD__) && __FreeBSD_version >= 801000
 			CURVNET_RESTORE();
 #endif
 			SCTP_MCORE_QLOCK(wkq);
 		}
 		wkq->running = 0;
 		if (!TAILQ_EMPTY(&wkq->que)) {
 			goto skip_sleep;
 		}
 		SCTP_MCORE_QUNLOCK(wkq);
 		msleep(&wkq->running,
 		       &wkq->core_mtx,
 , "wait for pkt", 0);
 	}
 }
 static void
 sctp_startup_mcore_threads(void)
 {
 	int i, cpu;
 	if (mp_ncpus == 1)
 		return;
 	if (sctp_mcore_workers != NULL) {
 		/* Already been here in some previous
 		 * vnet?
 		 */
 		return;
 	}
 	SCTP_MALLOC(sctp_mcore_workers, struct sctp_mcore_ctrl *,
 		    ((mp_maxid+1) * sizeof(struct sctp_mcore_ctrl)),
 		    SCTP_M_MCORE);
 	if (sctp_mcore_workers == NULL) {
 		/* TSNH I hope */
 		return;
 	}
 	memset(sctp_mcore_workers, 0 , ((mp_maxid+1) *
 					sizeof(struct sctp_mcore_ctrl)));
 	/* Init the structures */
 	for (i = 0; i<=mp_maxid; i++) {
 		TAILQ_INIT(&sctp_mcore_workers[i].que);
 		SCTP_MCORE_LOCK_INIT(&sctp_mcore_workers[i]);
 		SCTP_MCORE_QLOCK_INIT(&sctp_mcore_workers[i]);
 		sctp_mcore_workers[i].cpuid = i;
 	}
 	if (sctp_cpuarry == NULL) {
 		SCTP_MALLOC(sctp_cpuarry, int *,
 			    (mp_ncpus * sizeof(int)),
 			    SCTP_M_MCORE);
 		i = 0;
 		CPU_FOREACH(cpu) {
 			sctp_cpuarry[i] = cpu;
 			i++;
 		}
 	}
 	/* Now start them all */
 	CPU_FOREACH(cpu) {
 #if __FreeBSD_version <= 701000
 		(void)kthread_create(sctp_mcore_thread,
 				     (void *)&sctp_mcore_workers[cpu],
 				     &sctp_mcore_workers[cpu].thread_proc,
 				     RFPROC,
 				     SCTP_KTHREAD_PAGES,
 				     SCTP_MCORE_NAME);
 #else
 		(void)kproc_create(sctp_mcore_thread,
 				   (void *)&sctp_mcore_workers[cpu],
 				   &sctp_mcore_workers[cpu].thread_proc,
 				   RFPROC,
 				   SCTP_KTHREAD_PAGES,
 				   SCTP_MCORE_NAME);
 #endif
 	}
 }
 #endif
 #if defined(__FreeBSD__) && __FreeBSD_cc_version >= 1100000
 static struct mbuf *
 sctp_netisr_hdlr(struct mbuf *m, uintptr_t source)
 {
 	struct ip *ip;
 	struct sctphdr *sh;
 	int offset;
 	uint32_t flowid, tag;
 	/*
 	 * No flow id built by lower layers fix it so we
 	 * create one.
 	 */
 	ip = mtod(m, struct ip *);
 	offset = (ip->ip_hl << 2) + sizeof(struct sctphdr);
 	if (SCTP_BUF_LEN(m) < offset) {
 		if ((m = m_pullup(m, offset)) == NULL) {
 			SCTP_STAT_INCR(sctps_hdrops);
 			return (NULL);
 		}
 		ip = mtod(m, struct ip *);
 	}
 	sh = (struct sctphdr *)((caddr_t)ip + (ip->ip_hl << 2));
 	tag = htonl(sh->v_tag);
 	flowid = tag ^ ntohs(sh->dest_port) ^ ntohs(sh->src_port);
 	m->m_pkthdr.flowid = flowid;
 	m->m_flags |= M_FLOWID;
 	return (m);
 }
 #endif
 void
 sctp_pcb_init()
 {
 	/*
 	 * SCTP initialization for the PCB structures should be called by
 	 * the sctp_init() funciton.
 	 */
 	int i;
 	struct timeval tv;
 	if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) {
 		/* error I was called twice */
 		return;
 	}
 	SCTP_BASE_VAR(sctp_pcb_initialized) = 1;
 #if defined(SCTP_LOCAL_TRACE_BUF)
 #if defined(__Windows__)
 	if (SCTP_BASE_SYSCTL(sctp_log) != NULL) {
 		bzero(SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));
 	}
 #else
 	bzero(&SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));
 #endif
 #endif
 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
 	SCTP_MALLOC(SCTP_BASE_STATS, struct sctpstat *,
 		    ((mp_maxid+1) * sizeof(struct sctpstat)),
 		    SCTP_M_MCORE);
 #endif
 	(void)SCTP_GETTIME_TIMEVAL(&tv);
 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
 	bzero(SCTP_BASE_STATS, (sizeof(struct sctpstat) * (mp_maxid+1)));
 	SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t)tv.tv_sec;
 	SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t)tv.tv_usec;
 #else
 	bzero(&SCTP_BASE_STATS, sizeof(struct sctpstat));
 	SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t)tv.tv_sec;
 	SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t)tv.tv_usec;
 #endif
 	/* init the empty list of (All) Endpoints */
 	LIST_INIT(&SCTP_BASE_INFO(listhead));
 #if defined(__APPLE__)
 	LIST_INIT(&SCTP_BASE_INFO(inplisthead));
 #if defined(APPLE_LEOPARD) || defined(APPLE_SNOWLEOPARD) || defined(APPLE_LION) || defined(APPLE_MOUNTAINLION)
 	SCTP_BASE_INFO(sctbinfo).listhead = &SCTP_BASE_INFO(inplisthead);
 	SCTP_BASE_INFO(sctbinfo).mtx_grp_attr = lck_grp_attr_alloc_init();
 	lck_grp_attr_setdefault(SCTP_BASE_INFO(sctbinfo).mtx_grp_attr);
 	SCTP_BASE_INFO(sctbinfo).mtx_grp = lck_grp_alloc_init("sctppcb", SCTP_BASE_INFO(sctbinfo).mtx_grp_attr);
 	SCTP_BASE_INFO(sctbinfo).mtx_attr = lck_attr_alloc_init();
 	lck_attr_setdefault(SCTP_BASE_INFO(sctbinfo).mtx_attr);
 #else
 	SCTP_BASE_INFO(sctbinfo).ipi_listhead = &SCTP_BASE_INFO(inplisthead);
 	SCTP_BASE_INFO(sctbinfo).ipi_lock_grp_attr = lck_grp_attr_alloc_init();
 	lck_grp_attr_setdefault(SCTP_BASE_INFO(sctbinfo).ipi_lock_grp_attr);
 	SCTP_BASE_INFO(sctbinfo).ipi_lock_grp = lck_grp_alloc_init("sctppcb", SCTP_BASE_INFO(sctbinfo).ipi_lock_grp_attr);
 	SCTP_BASE_INFO(sctbinfo).ipi_lock_attr = lck_attr_alloc_init();
 	lck_attr_setdefault(SCTP_BASE_INFO(sctbinfo).ipi_lock_attr);
 #endif
 #if !defined(APPLE_LEOPARD) && !defined(APPLE_SNOWLEOPARD) && !defined(APPLE_LION) && !defined(APPLE_MOUNTAINLION)
 	SCTP_BASE_INFO(sctbinfo).ipi_gc = sctp_gc;
 	in_pcbinfo_attach(&SCTP_BASE_INFO(sctbinfo));
 #endif
 #endif
 	/* init the hash table of endpoints */
 #if defined(__FreeBSD__)
 #if defined(__FreeBSD_cc_version) && __FreeBSD_cc_version >= 440000
 	TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize));
 	TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize));
 	TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale));
 #else
 	TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", SCTP_TCBHASHSIZE,
 			  SCTP_BASE_SYSCTL(sctp_hashtblsize));
 	TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", SCTP_PCBHASHSIZE,
 			  SCTP_BASE_SYSCTL(sctp_pcbtblsize));
 	TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", SCTP_CHUNKQUEUE_SCALE,
 			  SCTP_BASE_SYSCTL(sctp_chunkscale));
 #endif
 #endif
 	SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31),
 						       &SCTP_BASE_INFO(hashasocmark));
 	SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
 						     &SCTP_BASE_INFO(hashmark));
 	SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
 							&SCTP_BASE_INFO(hashtcpmark));
 	SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize);
 	SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH,
 						      &SCTP_BASE_INFO(hashvrfmark));
 	SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE,
 						      &SCTP_BASE_INFO(vrf_ifn_hashmark));
 	/* init the zones */
 	/*
 	 * FIX ME: Should check for NULL returns, but if it does fail we are
 	 * doomed to panic anyways... add later maybe.
 	 */
 	SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep",
 		       sizeof(struct sctp_inpcb), maxsockets);
 	SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc",
 		       sizeof(struct sctp_tcb), sctp_max_number_of_assoc);
 	SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr",
 		       sizeof(struct sctp_laddr),
 		       (sctp_max_number_of_assoc * sctp_scale_up_for_address));
 	SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr",
 		       sizeof(struct sctp_nets),
 		       (sctp_max_number_of_assoc * sctp_scale_up_for_address));
 	SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk",
 		       sizeof(struct sctp_tmit_chunk),
 		       (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
 	SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq",
 		       sizeof(struct sctp_queued_to_read),
 		       (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
 	SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out",
 		       sizeof(struct sctp_stream_queue_pending),
 		       (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
 	SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf",
 		       sizeof(struct sctp_asconf),
 		       (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
 	SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack",
 		       sizeof(struct sctp_asconf_ack),
 		       (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
 	/* Master Lock INIT for info structure */
 	SCTP_INP_INFO_LOCK_INIT();
 	SCTP_STATLOG_INIT_LOCK();
 	SCTP_IPI_COUNT_INIT();
 	SCTP_IPI_ADDR_INIT();
 #ifdef SCTP_PACKET_LOGGING
 	SCTP_IP_PKTLOG_INIT();
 #endif
 	LIST_INIT(&SCTP_BASE_INFO(addr_wq));
 	SCTP_WQ_ADDR_INIT();
 	/* not sure if we need all the counts */
 	SCTP_BASE_INFO(ipi_count_ep) = 0;
 	/* assoc/tcb zone info */
 	SCTP_BASE_INFO(ipi_count_asoc) = 0;
 	/* local addrlist zone info */
 	SCTP_BASE_INFO(ipi_count_laddr) = 0;
 	/* remote addrlist zone info */
 	SCTP_BASE_INFO(ipi_count_raddr) = 0;
 	/* chunk info */
 	SCTP_BASE_INFO(ipi_count_chunk) = 0;
 	/* socket queue zone info */
 	SCTP_BASE_INFO(ipi_count_readq) = 0;
 	/* stream out queue cont */
 	SCTP_BASE_INFO(ipi_count_strmoq) = 0;
 	SCTP_BASE_INFO(ipi_free_strmoq) = 0;
 	SCTP_BASE_INFO(ipi_free_chunks) = 0;
 	SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer));
 	/* Init the TIMEWAIT list */
 	for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
 		LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]);
 	}
 #if defined(SCTP_PROCESS_LEVEL_LOCKS)
 #if defined(__Userspace_os_Windows)
 	InitializeConditionVariable(&sctp_it_ctl.iterator_wakeup);
 #else
 	(void)pthread_cond_init(&sctp_it_ctl.iterator_wakeup, NULL);
 #endif
 #endif
 	sctp_startup_iterator();
 #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
 	sctp_startup_mcore_threads();
 #endif
 #ifndef __Panda__
 	/*
 	 * INIT the default VRF which for BSD is the only one, other O/S's
 	 * may have more. But initially they must start with one and then
 	 * add the VRF's as addresses are added.
 	 */
 	sctp_init_vrf_list(SCTP_DEFAULT_VRF);
 #endif
 #if defined(__FreeBSD__) && __FreeBSD_cc_version >= 1100000
 	if (ip_register_flow_handler(sctp_netisr_hdlr, IPPROTO_SCTP)) {
 		SCTP_PRINTF("***SCTP- Error can't register netisr handler***\n");
 	}
 #endif
 #if defined(_SCTP_NEEDS_CALLOUT_) || defined(_USER_SCTP_NEEDS_CALLOUT_)
 	/* allocate the lock for the callout/timer queue */
 	SCTP_TIMERQ_LOCK_INIT();
 	TAILQ_INIT(&SCTP_BASE_INFO(callqueue));
 #endif
 #if defined(__Userspace__)
 	mbuf_init(NULL);
 	atomic_init();
 #if defined(INET) || defined(INET6)
 	recv_thread_init();
 #endif
 #endif
 }
 /*
  * Assumes that the SCTP_BASE_INFO() lock is NOT held.
  */
 void
 sctp_pcb_finish(void)
 {
 	struct sctp_vrflist *vrf_bucket;
 	struct sctp_vrf *vrf, *nvrf;
 	struct sctp_ifn *ifn, *nifn;
 	struct sctp_ifa *ifa, *nifa;
 	struct sctpvtaghead *chain;
 	struct sctp_tagblock *twait_block, *prev_twait_block;
 	struct sctp_laddr *wi, *nwi;
 	int i;
 	struct sctp_iterator *it, *nit;
 #if !defined(__FreeBSD__)
 	/* Notify the iterator to exit. */
 	SCTP_IPI_ITERATOR_WQ_LOCK();
 	sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_MUST_EXIT;
 	sctp_wakeup_iterator();
 	SCTP_IPI_ITERATOR_WQ_UNLOCK();
 #endif
 #if defined(__APPLE__)
 #if !defined(APPLE_LEOPARD) && !defined(APPLE_SNOWLEOPARD) && !defined(APPLE_LION) && !defined(APPLE_MOUNTAINLION)
 	in_pcbinfo_detach(&SCTP_BASE_INFO(sctbinfo));
 #endif
 	SCTP_IPI_ITERATOR_WQ_LOCK();
 	do {
 		msleep(&sctp_it_ctl.iterator_flags,
 		       sctp_it_ctl.ipi_iterator_wq_mtx,
 , "waiting_for_work", 0);
 	} while ((sctp_it_ctl.iterator_flags & SCTP_ITERATOR_EXITED) == 0);
 	thread_deallocate(sctp_it_ctl.thread_proc);
 	SCTP_IPI_ITERATOR_WQ_UNLOCK();
 #endif
 #if defined(__Windows__)
 	if (sctp_it_ctl.iterator_thread_obj != NULL) {
 		NTSTATUS status = STATUS_SUCCESS;
 		KeSetEvent(&sctp_it_ctl.iterator_wakeup[1], IO_NO_INCREMENT, FALSE);
 		status = KeWaitForSingleObject(sctp_it_ctl.iterator_thread_obj,
 					       Executive,
 					       KernelMode,
 					       FALSE,
 					       NULL);
 		ObDereferenceObject(sctp_it_ctl.iterator_thread_obj);
 	}
 #endif
 #if defined(__Userspace__)
 	if (sctp_it_ctl.thread_proc) {
 #if defined(__Userspace_os_Windows)
 		WaitForSingleObject(sctp_it_ctl.thread_proc, INFINITE);
 		CloseHandle(sctp_it_ctl.thread_proc);
 		sctp_it_ctl.thread_proc = NULL;
 #else
 		pthread_join(sctp_it_ctl.thread_proc, NULL);
 		sctp_it_ctl.thread_proc = 0;
 #endif
 	}
 #endif
 #if defined(SCTP_PROCESS_LEVEL_LOCKS)
 #if defined(__Userspace_os_Windows)
 	DeleteConditionVariable(&sctp_it_ctl.iterator_wakeup);
 #else
 	pthread_cond_destroy(&sctp_it_ctl.iterator_wakeup);
 #endif
 #endif
 	/* In FreeBSD the iterator thread never exits
 	 * but we do clean up.
 	 * The only way FreeBSD reaches here is if we have VRF's
 	 * but we still add the ifdef to make it compile on old versions.
 	 */
 	SCTP_IPI_ITERATOR_WQ_LOCK();
 	TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
 #if defined(__FreeBSD__) && __FreeBSD_version >= 801000
 		if (it->vn != curvnet) {
 			continue;
 		}
 #endif
 		TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
 		if (it->function_atend != NULL) {
 			(*it->function_atend) (it->pointer, it->val);
 		}
 		SCTP_FREE(it,SCTP_M_ITER);
 	}
 	SCTP_IPI_ITERATOR_WQ_UNLOCK();
 #if defined(__FreeBSD__) && __FreeBSD_version >= 801000
 	SCTP_ITERATOR_LOCK();
 	if ((sctp_it_ctl.cur_it) &&
 	    (sctp_it_ctl.cur_it->vn == curvnet)) {
 		sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
 	}
 	SCTP_ITERATOR_UNLOCK();
 #endif
 #if !defined(__FreeBSD__)
 	SCTP_IPI_ITERATOR_WQ_DESTROY();
  	SCTP_ITERATOR_LOCK_DESTROY();
 #endif
 	SCTP_OS_TIMER_STOP(&SCTP_BASE_INFO(addr_wq_timer.timer));
 	SCTP_WQ_ADDR_LOCK();
 	LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
 		LIST_REMOVE(wi, sctp_nxt_addr);
 		SCTP_DECR_LADDR_COUNT();
 		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi);
 	}
 	SCTP_WQ_ADDR_UNLOCK();
 	/*
 	 * free the vrf/ifn/ifa lists and hashes (be sure address monitor
 	 * is destroyed first).
 	 */
 	vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))];
 	LIST_FOREACH_SAFE(vrf, vrf_bucket, next_vrf, nvrf) {
 		LIST_FOREACH_SAFE(ifn, &vrf->ifnlist, next_ifn, nifn) {
 			LIST_FOREACH_SAFE(ifa, &ifn->ifalist, next_ifa, nifa) {
 				/* free the ifa */
 				LIST_REMOVE(ifa, next_bucket);
 				LIST_REMOVE(ifa, next_ifa);
 				SCTP_FREE(ifa, SCTP_M_IFA);
 			}
 			/* free the ifn */
 			LIST_REMOVE(ifn, next_bucket);
 			LIST_REMOVE(ifn, next_ifn);
 			SCTP_FREE(ifn, SCTP_M_IFN);
 		}
 		SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
 		/* free the vrf */
 		LIST_REMOVE(vrf, next_vrf);
 		SCTP_FREE(vrf, SCTP_M_VRF);
 	}
 	/* free the vrf hashes */
 	SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark));
 	SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark));
 #if defined(__Userspace__) && !defined(__Userspace_os_Windows)
 	/* free memory allocated by getifaddrs call */
 #if defined(INET) || defined(INET6)
 	freeifaddrs(g_interfaces);
 #endif
 #endif
 	/* free the TIMEWAIT list elements malloc'd in the function
 	 * sctp_add_vtag_to_timewait()...
 	 */
 	for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
 		chain = &SCTP_BASE_INFO(vtag_timewait)[i];
 		if (!LIST_EMPTY(chain)) {
 			prev_twait_block = NULL;
 			LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
 				if (prev_twait_block) {
 					SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
 				}
 				prev_twait_block = twait_block;
 			}
 			SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
 		}
 	}
 	/* free the locks and mutexes */
 #if defined(__APPLE__)
 	SCTP_TIMERQ_LOCK_DESTROY();
 #endif
 #ifdef SCTP_PACKET_LOGGING
 	SCTP_IP_PKTLOG_DESTROY();
 #endif
 	SCTP_IPI_ADDR_DESTROY();
 #if defined(__APPLE__)
 	SCTP_IPI_COUNT_DESTROY();
 #endif
 	SCTP_STATLOG_DESTROY();
 	SCTP_INP_INFO_LOCK_DESTROY();
 	SCTP_WQ_ADDR_DESTROY();
 #if defined(__APPLE__)
 #if defined(APPLE_LEOPARD) || defined(APPLE_SNOWLEOPARD) || defined(APPLE_LION) || defined(APPLE_MOUNTAINLION)
 	lck_grp_attr_free(SCTP_BASE_INFO(sctbinfo).mtx_grp_attr);
 	lck_grp_free(SCTP_BASE_INFO(sctbinfo).mtx_grp);
 	lck_attr_free(SCTP_BASE_INFO(sctbinfo).mtx_attr);
 #else
 	lck_grp_attr_free(SCTP_BASE_INFO(sctbinfo).ipi_lock_grp_attr);
 	lck_grp_free(SCTP_BASE_INFO(sctbinfo).ipi_lock_grp);
 	lck_attr_free(SCTP_BASE_INFO(sctbinfo).ipi_lock_attr);
 #endif
 #endif
 #if defined(__Userspace__)
 	SCTP_TIMERQ_LOCK_DESTROY();
 	SCTP_ZONE_DESTROY(zone_mbuf);
 	SCTP_ZONE_DESTROY(zone_clust);
 	SCTP_ZONE_DESTROY(zone_ext_refcnt);
 #endif
 #if defined(__Windows__) || defined(__FreeBSD__) || defined(__Userspace__)
 	SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep));
 	SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc));
 	SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr));
 	SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net));
 	SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk));
 	SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq));
 	SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq));
 	SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf));
 	SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack));
 #endif
 	/* Get rid of other stuff to */
 	if (SCTP_BASE_INFO(sctp_asochash) != NULL)
 		SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark));
 	if (SCTP_BASE_INFO(sctp_ephash) != NULL)
 		SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark));
 	if (SCTP_BASE_INFO(sctp_tcpephash) != NULL)
 		SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark));
 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
 	SCTP_FREE(SCTP_BASE_STATS, SCTP_M_MCORE);
 #endif
 }
 int
 sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m,
                               int offset, int limit,
                               struct sockaddr *src, struct sockaddr *dst,
                               struct sockaddr *altsa)
 {
 	/*
 	 * grub through the INIT pulling addresses and loading them to the
 	 * nets structure in the asoc. The from address in the mbuf should
 	 * also be loaded (if it is not already). This routine can be called
 	 * with either INIT or INIT-ACK's as long as the m points to the IP
 	 * packet and the offset points to the beginning of the parameters.
 	 */
 	struct sctp_inpcb *inp;
 	struct sctp_nets *net, *nnet, *net_tmp;
 	struct sctp_paramhdr *phdr, parm_buf;
 	struct sctp_tcb *stcb_tmp;
 	uint16_t ptype, plen;
 	struct sockaddr *sa;
 	uint8_t random_store[SCTP_PARAM_BUFFER_SIZE];
 	struct sctp_auth_random *p_random = NULL;
 	uint16_t random_len = 0;
 	uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE];
 	struct sctp_auth_hmac_algo *hmacs = NULL;
 	uint16_t hmacs_len = 0;
 	uint8_t saw_asconf = 0;
 	uint8_t saw_asconf_ack = 0;
 	uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE];
 	struct sctp_auth_chunk_list *chunks = NULL;
 	uint16_t num_chunks = 0;
 	sctp_key_t *new_key;
 	uint32_t keylen;
 	int got_random = 0, got_hmacs = 0, got_chklist = 0;
 	uint8_t ecn_allowed;
 #ifdef INET
 	struct sockaddr_in sin;
 #endif
 #ifdef INET6
 	struct sockaddr_in6 sin6;
 #endif
 	/* First get the destination address setup too. */
 #ifdef INET
 	memset(&sin, 0, sizeof(sin));
 	sin.sin_family = AF_INET;
 #ifdef HAVE_SIN_LEN
 	sin.sin_len = sizeof(sin);
 #endif
 	sin.sin_port = stcb->rport;
 #endif
 #ifdef INET6
 	memset(&sin6, 0, sizeof(sin6));
 	sin6.sin6_family = AF_INET6;
 #ifdef HAVE_SIN6_LEN
 	sin6.sin6_len = sizeof(struct sockaddr_in6);
 #endif
 	sin6.sin6_port = stcb->rport;
 #endif
 	if (altsa) {
 		sa = altsa;
 	} else {
 		sa = src;
 	}
 	/* Turn off ECN until we get through all params */
 	ecn_allowed = 0;
 	TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 		/* mark all addresses that we have currently on the list */
 		net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC;
 	}
 	/* does the source address already exist? if so skip it */
 	inp = stcb->sctp_ep;
 	atomic_add_int(&stcb->asoc.refcnt, 1);
 	stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, dst, stcb);
 	atomic_add_int(&stcb->asoc.refcnt, -1);
 	if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) {
 		/* we must add the source address */
 		/* no scope set here since we have a tcb already. */
 		switch (sa->sa_family) {
 #ifdef INET
 		case AF_INET:
 			if (stcb->asoc.scope.ipv4_addr_legal) {
 				if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) {
 					return (-1);
 				}
 			}
 			break;
 #endif
 #ifdef INET6
 		case AF_INET6:
 			if (stcb->asoc.scope.ipv6_addr_legal) {
 				if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
 					return (-2);
 				}
 			}
 			break;
 #endif
 #if defined(__Userspace__)
 		case AF_CONN:
 			if (stcb->asoc.scope.conn_addr_legal) {
 				if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
 					return (-2);
 				}
 			}
 			break;
 #endif
 		default:
 			break;
 		}
 	} else {
 		if (net_tmp != NULL && stcb_tmp == stcb) {
 			net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC;
 		} else if (stcb_tmp != stcb) {
 			/* It belongs to another association? */
 			if (stcb_tmp)
 				SCTP_TCB_UNLOCK(stcb_tmp);
 			return (-3);
 		}
 	}
 	if (stcb->asoc.state == 0) {
 		/* the assoc was freed? */
 		return (-4);
 	}
 	/*
 	 * peer must explicitly turn this on. This may have been initialized
 	 * to be "on" in order to allow local addr changes while INIT's are
 	 * in flight.
 	 */
 	stcb->asoc.peer_supports_asconf = 0;
 	/* now we must go through each of the params. */
 	phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
 	while (phdr) {
 		ptype = ntohs(phdr->param_type);
 		plen = ntohs(phdr->param_length);
 		/*
 		 * SCTP_PRINTF("ptype => %0x, plen => %d\n", (uint32_t)ptype,
 		 * (int)plen);
 		 */
 		if (offset + plen > limit) {
 			break;
 		}
 		if (plen == 0) {
 			break;
 		}
 #ifdef INET
 		if (ptype == SCTP_IPV4_ADDRESS) {
 			if (stcb->asoc.scope.ipv4_addr_legal) {
 				struct sctp_ipv4addr_param *p4, p4_buf;
 				/* ok get the v4 address and check/add */
 				phdr = sctp_get_next_param(m, offset,
 							   (struct sctp_paramhdr *)&p4_buf,
 							   sizeof(p4_buf));
 				if (plen != sizeof(struct sctp_ipv4addr_param) ||
 				    phdr == NULL) {
 					return (-5);
 				}
 				p4 = (struct sctp_ipv4addr_param *)phdr;
 				sin.sin_addr.s_addr = p4->addr;
 				if (IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) {
 					/* Skip multi-cast addresses */
 					goto next_param;
 				}
 				if ((sin.sin_addr.s_addr == INADDR_BROADCAST) ||
 				    (sin.sin_addr.s_addr == INADDR_ANY)) {
 					goto next_param;
 				}
 				sa = (struct sockaddr *)&sin;
 				inp = stcb->sctp_ep;
 				atomic_add_int(&stcb->asoc.refcnt, 1);
 				stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
 									dst, stcb);
 				atomic_add_int(&stcb->asoc.refcnt, -1);
 				if ((stcb_tmp == NULL && inp == stcb->sctp_ep) ||
 				    inp == NULL) {
 					/* we must add the source address */
 					/*
 					 * no scope set since we have a tcb
 					 * already
 					 */
 					/*
 					 * we must validate the state again
 					 * here
 					 */
 				add_it_now:
 					if (stcb->asoc.state == 0) {
 						/* the assoc was freed? */
 						return (-7);
 					}
 					if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) {
 						return (-8);
 					}
 				} else if (stcb_tmp == stcb) {
 					if (stcb->asoc.state == 0) {
 						/* the assoc was freed? */
 						return (-10);
 					}
 					if (net != NULL) {
 						/* clear flag */
 						net->dest_state &=
 							~SCTP_ADDR_NOT_IN_ASSOC;
 					}
 				} else {
 					/*
 					 * strange, address is in another
 					 * assoc? straighten out locks.
 					 */
 					if (stcb_tmp) {
 						if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
 							/* in setup state we abort this guy */
 							sctp_abort_an_association(stcb_tmp->sctp_ep,
 										  stcb_tmp, NULL, SCTP_SO_NOT_LOCKED);
 							goto add_it_now;
 						}
 						SCTP_TCB_UNLOCK(stcb_tmp);
 					}
 					if (stcb->asoc.state == 0) {
 						/* the assoc was freed? */
 						return (-12);
 					}
 					return (-13);
 				}
 			}
 		} else
 #endif
 #ifdef INET6
 		if (ptype == SCTP_IPV6_ADDRESS) {
 			if (stcb->asoc.scope.ipv6_addr_legal) {
 				/* ok get the v6 address and check/add */
 				struct sctp_ipv6addr_param *p6, p6_buf;
 				phdr = sctp_get_next_param(m, offset,
 							   (struct sctp_paramhdr *)&p6_buf,
 							   sizeof(p6_buf));
 				if (plen != sizeof(struct sctp_ipv6addr_param) ||
 				    phdr == NULL) {
 					return (-14);
 				}
 				p6 = (struct sctp_ipv6addr_param *)phdr;
 				memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
 				       sizeof(p6->addr));
 				if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) {
 					/* Skip multi-cast addresses */
 					goto next_param;
 				}
 				if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) {
 					/* Link local make no sense without scope */
 					goto next_param;
 				}
 				sa = (struct sockaddr *)&sin6;
 				inp = stcb->sctp_ep;
 				atomic_add_int(&stcb->asoc.refcnt, 1);
 				stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
 									dst, stcb);
 				atomic_add_int(&stcb->asoc.refcnt, -1);
 				if (stcb_tmp == NULL &&
 				    (inp == stcb->sctp_ep || inp == NULL)) {
 					/*
 					 * we must validate the state again
 					 * here
 					 */
 				add_it_now6:
 					if (stcb->asoc.state == 0) {
 						/* the assoc was freed? */
 						return (-16);
 					}
 					/*
 					 * we must add the address, no scope
 					 * set
 					 */
 					if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) {
 						return (-17);
 					}
 				} else if (stcb_tmp == stcb) {
 					/*
 					 * we must validate the state again
 					 * here
 					 */
 					if (stcb->asoc.state == 0) {
 						/* the assoc was freed? */
 						return (-19);
 					}
 					if (net != NULL) {
 						/* clear flag */
 						net->dest_state &=
 							~SCTP_ADDR_NOT_IN_ASSOC;
 					}
 				} else {
 					/*
 					 * strange, address is in another
 					 * assoc? straighten out locks.
 					 */
 					if (stcb_tmp)
 						if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
 							/* in setup state we abort this guy */
 							sctp_abort_an_association(stcb_tmp->sctp_ep,
 										  stcb_tmp, NULL, SCTP_SO_NOT_LOCKED);
 							goto add_it_now6;
 						}
 					SCTP_TCB_UNLOCK(stcb_tmp);
 					if (stcb->asoc.state == 0) {
 						/* the assoc was freed? */
 						return (-21);
 					}
 					return (-22);
 				}
 			}
 		} else
 #endif
 		if (ptype == SCTP_ECN_CAPABLE) {
 			ecn_allowed = 1;
 		} else if (ptype == SCTP_ULP_ADAPTATION) {
 			if (stcb->asoc.state != SCTP_STATE_OPEN) {
 				struct sctp_adaptation_layer_indication ai, *aip;
 				phdr = sctp_get_next_param(m, offset,
 							   (struct sctp_paramhdr *)&ai, sizeof(ai));
 				aip = (struct sctp_adaptation_layer_indication *)phdr;
 				if (aip) {
 					stcb->asoc.peers_adaptation = ntohl(aip->indication);
 					stcb->asoc.adaptation_needed = 1;
 				}
 			}
 		} else if (ptype == SCTP_SET_PRIM_ADDR) {
 			struct sctp_asconf_addr_param lstore, *fee;
 			int lptype;
 			struct sockaddr *lsa = NULL;
 #ifdef INET
 			struct sctp_asconf_addrv4_param *fii;
 #endif
 			stcb->asoc.peer_supports_asconf = 1;
 			if (plen > sizeof(lstore)) {
 				return (-23);
 			}
 			phdr = sctp_get_next_param(m, offset,
 						   (struct sctp_paramhdr *)&lstore,
 						   min(plen,sizeof(lstore)));
 			if (phdr == NULL) {
 				return (-24);
 			}
 			fee = (struct sctp_asconf_addr_param *)phdr;
 			lptype = ntohs(fee->addrp.ph.param_type);
 			switch (lptype) {
 #ifdef INET
 			case SCTP_IPV4_ADDRESS:
 				if (plen !=
 				    sizeof(struct sctp_asconf_addrv4_param)) {
 					SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n",
 						    (int)sizeof(struct sctp_asconf_addrv4_param),
 						    plen);
 				} else {
 					fii = (struct sctp_asconf_addrv4_param *)fee;
 					sin.sin_addr.s_addr = fii->addrp.addr;
 					lsa = (struct sockaddr *)&sin;
 				}
 				break;
 #endif
 #ifdef INET6
 			case SCTP_IPV6_ADDRESS:
 				if (plen !=
 				    sizeof(struct sctp_asconf_addr_param)) {
 					SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n",
 						    (int)sizeof(struct sctp_asconf_addr_param),
 						    plen);
 				} else {
 					memcpy(sin6.sin6_addr.s6_addr,
 					       fee->addrp.addr,
 					       sizeof(fee->addrp.addr));
 					lsa = (struct sockaddr *)&sin6;
 				}
 				break;
 #endif
 			default:
 				break;
 			}
 			if (lsa) {
 				(void)sctp_set_primary_addr(stcb, sa, NULL);
 			}
 		} else if (ptype == SCTP_HAS_NAT_SUPPORT) {
 			stcb->asoc.peer_supports_nat = 1;
 		} else if (ptype == SCTP_PRSCTP_SUPPORTED) {
 			/* Peer supports pr-sctp */
 			stcb->asoc.peer_supports_prsctp = 1;
 		} else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) {
 			/* A supported extension chunk */
 			struct sctp_supported_chunk_types_param *pr_supported;
 			uint8_t local_store[SCTP_PARAM_BUFFER_SIZE];
 			int num_ent, i;
 			phdr = sctp_get_next_param(m, offset,
 						   (struct sctp_paramhdr *)&local_store, min(sizeof(local_store),plen));
 			if (phdr == NULL) {
 				return (-25);
 			}
 			stcb->asoc.peer_supports_asconf = 0;
 			stcb->asoc.peer_supports_prsctp = 0;
 			stcb->asoc.peer_supports_pktdrop = 0;
 			stcb->asoc.peer_supports_strreset = 0;
 			stcb->asoc.peer_supports_nr_sack = 0;
 			stcb->asoc.peer_supports_auth = 0;
 			pr_supported = (struct sctp_supported_chunk_types_param *)phdr;
 			num_ent = plen - sizeof(struct sctp_paramhdr);
 			for (i = 0; i < num_ent; i++) {
 				switch (pr_supported->chunk_types[i]) {
 				case SCTP_ASCONF:
 				case SCTP_ASCONF_ACK:
 					stcb->asoc.peer_supports_asconf = 1;
 					break;
 				case SCTP_FORWARD_CUM_TSN:
 					stcb->asoc.peer_supports_prsctp = 1;
 					break;
 				case SCTP_PACKET_DROPPED:
 					stcb->asoc.peer_supports_pktdrop = 1;
 					break;
 				case SCTP_NR_SELECTIVE_ACK:
 					stcb->asoc.peer_supports_nr_sack = 1;
 					break;
 				case SCTP_STREAM_RESET:
 					stcb->asoc.peer_supports_strreset = 1;
 					break;
 				case SCTP_AUTHENTICATION:
 					stcb->asoc.peer_supports_auth = 1;
 					break;
 				default:
 					/* one I have not learned yet */
 					break;
 				}
 			}
 		} else if (ptype == SCTP_RANDOM) {
 			if (plen > sizeof(random_store))
 				break;
 			if (got_random) {
 				/* already processed a RANDOM */
 				goto next_param;
 			}
 			phdr = sctp_get_next_param(m, offset,
 						   (struct sctp_paramhdr *)random_store,
 						   min(sizeof(random_store),plen));
 			if (phdr == NULL)
 				return (-26);
 			p_random = (struct sctp_auth_random *)phdr;
 			random_len = plen - sizeof(*p_random);
 			/* enforce the random length */
 			if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) {
 				SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n");
 				return (-27);
 			}
 			got_random = 1;
 		} else if (ptype == SCTP_HMAC_LIST) {
 			int num_hmacs;
 			int i;
 			if (plen > sizeof(hmacs_store))
 				break;
 			if (got_hmacs) {
 				/* already processed a HMAC list */
 				goto next_param;
 			}
 			phdr = sctp_get_next_param(m, offset,
 						   (struct sctp_paramhdr *)hmacs_store,
 						   min(plen,sizeof(hmacs_store)));
 			if (phdr == NULL)
 				return (-28);
 			hmacs = (struct sctp_auth_hmac_algo *)phdr;
 			hmacs_len = plen - sizeof(*hmacs);
 			num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]);
 			/* validate the hmac list */
 			if (sctp_verify_hmac_param(hmacs, num_hmacs)) {
 				return (-29);
 			}
 			if (stcb->asoc.peer_hmacs != NULL)
 				sctp_free_hmaclist(stcb->asoc.peer_hmacs);
 			stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs);
 			if (stcb->asoc.peer_hmacs != NULL) {
 				for (i = 0; i < num_hmacs; i++) {
 					(void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs,
 								   ntohs(hmacs->hmac_ids[i]));
 				}
 			}
 			got_hmacs = 1;
 		} else if (ptype == SCTP_CHUNK_LIST) {
 			int i;
 			if (plen > sizeof(chunks_store))
 				break;
 			if (got_chklist) {
 				/* already processed a Chunks list */
 				goto next_param;
 			}
 			phdr = sctp_get_next_param(m, offset,
 						   (struct sctp_paramhdr *)chunks_store,
 						   min(plen,sizeof(chunks_store)));
 			if (phdr == NULL)
 				return (-30);
 			chunks = (struct sctp_auth_chunk_list *)phdr;
 			num_chunks = plen - sizeof(*chunks);
 			if (stcb->asoc.peer_auth_chunks != NULL)
 				sctp_clear_chunklist(stcb->asoc.peer_auth_chunks);
 			else
 				stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist();
 			for (i = 0; i < num_chunks; i++) {
 				(void)sctp_auth_add_chunk(chunks->chunk_types[i],
 							  stcb->asoc.peer_auth_chunks);
 				/* record asconf/asconf-ack if listed */
 				if (chunks->chunk_types[i] == SCTP_ASCONF)
 					saw_asconf = 1;
 				if (chunks->chunk_types[i] == SCTP_ASCONF_ACK)
 					saw_asconf_ack = 1;
 			}
 			got_chklist = 1;
 		} else if ((ptype == SCTP_HEARTBEAT_INFO) ||
 			   (ptype == SCTP_STATE_COOKIE) ||
 			   (ptype == SCTP_UNRECOG_PARAM) ||
 			   (ptype == SCTP_COOKIE_PRESERVE) ||
 			   (ptype == SCTP_SUPPORTED_ADDRTYPE) ||
 			   (ptype == SCTP_ADD_IP_ADDRESS) ||
 			   (ptype == SCTP_DEL_IP_ADDRESS) ||
 			   (ptype == SCTP_ERROR_CAUSE_IND) ||
 			   (ptype == SCTP_SUCCESS_REPORT)) {
 			/* don't care */ ;
 		} else {
 			if ((ptype & 0x8000) == 0x0000) {
 				/*
 				 * must stop processing the rest of the
 				 * param's. Any report bits were handled
 				 * with the call to
 				 * sctp_arethere_unrecognized_parameters()
 				 * when the INIT or INIT-ACK was first seen.
 				 */
 				break;
 			}
 		}
 	next_param:
 		offset += SCTP_SIZE32(plen);
 		if (offset >= limit) {
 			break;
 		}
 		phdr = sctp_get_next_param(m, offset, &parm_buf,
 					   sizeof(parm_buf));
 	}
 	/* Now check to see if we need to purge any addresses */
 	TAILQ_FOREACH_SAFE(net, &stcb->asoc.nets, sctp_next, nnet) {
 		if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) ==
 		    SCTP_ADDR_NOT_IN_ASSOC) {
 			/* This address has been removed from the asoc */
 			/* remove and free it */
 			stcb->asoc.numnets--;
 			TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next);
 			sctp_free_remote_addr(net);
 			if (net == stcb->asoc.primary_destination) {
 				stcb->asoc.primary_destination = NULL;
 				sctp_select_primary_destination(stcb);
 			}
 		}
 	}
 	if (ecn_allowed == 0) {
 		stcb->asoc.ecn_allowed = 0;
 	}
 	/* validate authentication required parameters */
 	if (got_random && got_hmacs) {
 		stcb->asoc.peer_supports_auth = 1;
 	} else {
 		stcb->asoc.peer_supports_auth = 0;
 	}
 	if (!stcb->asoc.peer_supports_auth && got_chklist) {
 		/* peer does not support auth but sent a chunks list? */
 		return (-31);
 	}
 	if (!SCTP_BASE_SYSCTL(sctp_asconf_auth_nochk) && stcb->asoc.peer_supports_asconf &&
 	    !stcb->asoc.peer_supports_auth) {
 		/* peer supports asconf but not auth? */
 		return (-32);
 	} else if ((stcb->asoc.peer_supports_asconf) && (stcb->asoc.peer_supports_auth) &&
 		   ((saw_asconf == 0) || (saw_asconf_ack == 0))) {
 		return (-33);
 	}
 	/* concatenate the full random key */
 	keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len;
 	if (chunks != NULL) {
 		keylen += sizeof(*chunks) + num_chunks;
 	}
 	new_key = sctp_alloc_key(keylen);
 	if (new_key != NULL) {
 		/* copy in the RANDOM */
 		if (p_random != NULL) {
 			keylen = sizeof(*p_random) + random_len;
 			bcopy(p_random, new_key->key, keylen);
 		}
 		/* append in the AUTH chunks */
 		if (chunks != NULL) {
 			bcopy(chunks, new_key->key + keylen,
 			      sizeof(*chunks) + num_chunks);
 			keylen += sizeof(*chunks) + num_chunks;
 		}
 		/* append in the HMACs */
 		if (hmacs != NULL) {
 			bcopy(hmacs, new_key->key + keylen,
 			      sizeof(*hmacs) + hmacs_len);
 		}
 	} else {
 		/* failed to get memory for the key */
 		return (-34);
 	}
 	if (stcb->asoc.authinfo.peer_random != NULL)
 		sctp_free_key(stcb->asoc.authinfo.peer_random);
 	stcb->asoc.authinfo.peer_random = new_key;
 	sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid);
 	sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid);
 	return (0);
 }
 int
 sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa,
 		      struct sctp_nets *net)
 {
 	/* make sure the requested primary address exists in the assoc */
 	if (net == NULL && sa)
 		net = sctp_findnet(stcb, sa);
 	if (net == NULL) {
 		/* didn't find the requested primary address! */
 		return (-1);
 	} else {
 		/* set the primary address */
 		if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
 			/* Must be confirmed, so queue to set */
 			net->dest_state |= SCTP_ADDR_REQ_PRIMARY;
 			return (0);
 		}
 		stcb->asoc.primary_destination = net;
 		if (!(net->dest_state & SCTP_ADDR_PF) && (stcb->asoc.alternate)) {
 			sctp_free_remote_addr(stcb->asoc.alternate);
 			stcb->asoc.alternate = NULL;
 		}
 		net = TAILQ_FIRST(&stcb->asoc.nets);
 		if (net != stcb->asoc.primary_destination) {
 			/* first one on the list is NOT the primary
 			 * sctp_cmpaddr() is much more efficient if
 			 * the primary is the first on the list, make it
 			 * so.
 			 */
 			TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
 			TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
 		}
 		return (0);
 	}
 }
 int
 sctp_is_vtag_good(uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now)
 {
 	/*
 	 * This function serves two purposes. It will see if a TAG can be
 	 * re-used and return 1 for yes it is ok and 0 for don't use that
 	 * tag. A secondary function it will do is purge out old tags that
 	 * can be removed.
 	 */
 	struct sctpvtaghead *chain;
 	struct sctp_tagblock *twait_block;
 	struct sctpasochead *head;
 	struct sctp_tcb *stcb;
 	int i;
 	SCTP_INP_INFO_RLOCK();
 	head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag,
 								SCTP_BASE_INFO(hashasocmark))];
 	if (head == NULL) {
 		/* invalid vtag */
 		goto skip_vtag_check;
 	}
 	LIST_FOREACH(stcb, head, sctp_asocs) {
 		/* We choose not to lock anything here. TCB's can't be
 		 * removed since we have the read lock, so they can't
 		 * be freed on us, same thing for the INP. I may
 		 * be wrong with this assumption, but we will go
 		 * with it for now :-)
 		 */
 		if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
 			continue;
 		}
 		if (stcb->asoc.my_vtag == tag) {
 			/* candidate */
 			if (stcb->rport != rport) {
 				continue;
 			}
 			if (stcb->sctp_ep->sctp_lport != lport) {
 				continue;
 			}
 			/* Its a used tag set */
 			SCTP_INP_INFO_RUNLOCK();
 			return (0);
 		}
 	}
 skip_vtag_check:
 	chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
 	/* Now what about timed wait ? */
 	LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
 		/*
 		 * Block(s) are present, lets see if we have this tag in the
 		 * list
 		 */
 		for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
 			if (twait_block->vtag_block[i].v_tag == 0) {
 				/* not used */
 				continue;
 			} else if ((long)twait_block->vtag_block[i].tv_sec_at_expire  <
 				   now->tv_sec) {
 				/* Audit expires this guy */
 				twait_block->vtag_block[i].tv_sec_at_expire = 0;
 				twait_block->vtag_block[i].v_tag = 0;
 				twait_block->vtag_block[i].lport = 0;
 				twait_block->vtag_block[i].rport = 0;
 			} else if ((twait_block->vtag_block[i].v_tag == tag) &&
 				   (twait_block->vtag_block[i].lport == lport) &&
 				   (twait_block->vtag_block[i].rport == rport)) {
 				/* Bad tag, sorry :< */
 				SCTP_INP_INFO_RUNLOCK();
 				return (0);
 			}
 		}
 	}
 	SCTP_INP_INFO_RUNLOCK();
 	return (1);
 }
 static void
 sctp_drain_mbufs(struct sctp_tcb *stcb)
 {
 	/*
 	 * We must hunt this association for MBUF's past the cumack (i.e.
 	 * out of order data that we can renege on).
 	 */
 	struct sctp_association *asoc;
 	struct sctp_tmit_chunk *chk, *nchk;
 	uint32_t cumulative_tsn_p1;
 	struct sctp_queued_to_read *ctl, *nctl;
 	int cnt, strmat;
 	uint32_t gap, i;
 	int fnd = 0;
 	/* We look for anything larger than the cum-ack + 1 */
 	asoc = &stcb->asoc;
 	if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) {
 		/* none we can reneg on. */
 		return;
 	}
 	SCTP_STAT_INCR(sctps_protocol_drains_done);
 	cumulative_tsn_p1 = asoc->cumulative_tsn + 1;
 	cnt = 0;
 	/* First look in the re-assembly queue */
 	TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) {
 		if (SCTP_TSN_GT(chk->rec.data.TSN_seq, cumulative_tsn_p1)) {
 			/* Yep it is above cum-ack */
 			cnt++;
 			SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.TSN_seq, asoc->mapping_array_base_tsn);
 			asoc->size_on_reasm_queue = sctp_sbspace_sub(asoc->size_on_reasm_queue, chk->send_size);
 			sctp_ucount_decr(asoc->cnt_on_reasm_queue);
 			SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
 			TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
 			if (chk->data) {
 				sctp_m_freem(chk->data);
 				chk->data = NULL;
 			}
 			sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
 		}
 	}
 	/* Ok that was fun, now we will drain all the inbound streams? */
 	for (strmat = 0; strmat < asoc->streamincnt; strmat++) {
 		TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[strmat].inqueue, next, nctl) {
 			if (SCTP_TSN_GT(ctl->sinfo_tsn, cumulative_tsn_p1)) {
 				/* Yep it is above cum-ack */
 				cnt++;
 				SCTP_CALC_TSN_TO_GAP(gap, ctl->sinfo_tsn, asoc->mapping_array_base_tsn);
 				asoc->size_on_all_streams = sctp_sbspace_sub(asoc->size_on_all_streams, ctl->length);
 				sctp_ucount_decr(asoc->cnt_on_all_streams);
 				SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
 				TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, ctl, next);
 				if (ctl->data) {
 					sctp_m_freem(ctl->data);
 					ctl->data = NULL;
 				}
 				sctp_free_remote_addr(ctl->whoFrom);
 				SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
 				SCTP_DECR_READQ_COUNT();
 			}
 		}
 	}
 	if (cnt) {
 		/* We must back down to see what the new highest is */
 		for (i = asoc->highest_tsn_inside_map; SCTP_TSN_GE(i, asoc->mapping_array_base_tsn); i--) {
 			SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn);
 			if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) {
 				asoc->highest_tsn_inside_map = i;
 				fnd = 1;
 				break;
 			}
 		}
 		if (!fnd) {
 			asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1;
 		}
 		/*
 		 * Question, should we go through the delivery queue? The only
 		 * reason things are on here is the app not reading OR a p-d-api up.
 		 * An attacker COULD send enough in to initiate the PD-API and then
 		 * send a bunch of stuff to other streams... these would wind up on
 		 * the delivery queue.. and then we would not get to them. But in
 		 * order to do this I then have to back-track and un-deliver
 		 * sequence numbers in streams.. el-yucko. I think for now we will
 		 * NOT look at the delivery queue and leave it to be something to
 		 * consider later. An alternative would be to abort the P-D-API with
 		 * a notification and then deliver the data.... Or another method
 		 * might be to keep track of how many times the situation occurs and
 		 * if we see a possible attack underway just abort the association.
 		 */
 #ifdef SCTP_DEBUG
 		SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt);
 #endif
 		/*
 		 * Now do we need to find a new
 		 * asoc->highest_tsn_inside_map?
 		 */
 		asoc->last_revoke_count = cnt;
 		(void)SCTP_OS_TIMER_STOP(&stcb->asoc.dack_timer.timer);
 		/*sa_ignore NO_NULL_CHK*/
 		sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
 		sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED);
 	}
 	/*
 	 * Another issue, in un-setting the TSN's in the mapping array we
 	 * DID NOT adjust the highest_tsn marker.  This will cause one of two
 	 * things to occur. It may cause us to do extra work in checking for
 	 * our mapping array movement. More importantly it may cause us to
 	 * SACK every datagram. This may not be a bad thing though since we
 	 * will recover once we get our cum-ack above and all this stuff we
 	 * dumped recovered.
 	 */
 }
 void
 sctp_drain()
 {
 	/*
 	 * We must walk the PCB lists for ALL associations here. The system
 	 * is LOW on MBUF's and needs help. This is where reneging will
 	 * occur. We really hope this does NOT happen!
 	 */
 #if defined(__FreeBSD__) && __FreeBSD_version >= 801000
 	VNET_ITERATOR_DECL(vnet_iter);
 #else
 	struct sctp_inpcb *inp;
 	struct sctp_tcb *stcb;
 	SCTP_STAT_INCR(sctps_protocol_drain_calls);
 	if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
 		return;
 	}
 #endif
 #if defined(__FreeBSD__) && __FreeBSD_version >= 801000
 	VNET_LIST_RLOCK_NOSLEEP();
 	VNET_FOREACH(vnet_iter) {
 		CURVNET_SET(vnet_iter);
 		struct sctp_inpcb *inp;
 		struct sctp_tcb *stcb;
 #endif
 #if defined(__FreeBSD__) && __FreeBSD_version >= 801000
 		SCTP_STAT_INCR(sctps_protocol_drain_calls);
 		if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
 #ifdef VIMAGE
 			continue;
 #else
 			return;
 #endif
 		}
 #endif
 		SCTP_INP_INFO_RLOCK();
 		LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
 			/* For each endpoint */
 			SCTP_INP_RLOCK(inp);
 			LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
 				/* For each association */
 				SCTP_TCB_LOCK(stcb);
 				sctp_drain_mbufs(stcb);
 				SCTP_TCB_UNLOCK(stcb);
 			}
 			SCTP_INP_RUNLOCK(inp);
 		}
 		SCTP_INP_INFO_RUNLOCK();
 #if defined(__FreeBSD__) && __FreeBSD_version >= 801000
 		CURVNET_RESTORE();
 	}
 	VNET_LIST_RUNLOCK_NOSLEEP();
 #endif
 }
 /*
  * start a new iterator
  * iterates through all endpoints and associations based on the pcb_state
  * flags and asoc_state.  "af" (mandatory) is executed for all matching
  * assocs and "ef" (optional) is executed when the iterator completes.
  * "inpf" (optional) is executed for each new endpoint as it is being
  * iterated through. inpe (optional) is called when the inp completes
  * its way through all the stcbs.
  */
 int
 sctp_initiate_iterator(inp_func inpf,
 		       asoc_func af,
 		       inp_func inpe,
 		       uint32_t pcb_state,
 		       uint32_t pcb_features,
 		       uint32_t asoc_state,
 		       void *argp,
 		       uint32_t argi,
 		       end_func ef,
 		       struct sctp_inpcb *s_inp,
 		       uint8_t chunk_output_off)
 {
 	struct sctp_iterator *it = NULL;
 	if (af == NULL) {
 		return (-1);
 	}
 	SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator),
 		    SCTP_M_ITER);
 	if (it == NULL) {
 		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
 		return (ENOMEM);
 	}
 	memset(it, 0, sizeof(*it));
 	it->function_assoc = af;
 	it->function_inp = inpf;
 	if (inpf)
 		it->done_current_ep = 0;
 	else
 		it->done_current_ep = 1;
 	it->function_atend = ef;
 	it->pointer = argp;
 	it->val = argi;
 	it->pcb_flags = pcb_state;
 	it->pcb_features = pcb_features;
 	it->asoc_state = asoc_state;
 	it->function_inp_end = inpe;
 	it->no_chunk_output = chunk_output_off;
 #if defined(__FreeBSD__) && __FreeBSD_version >= 801000
 	it->vn = curvnet;
 #endif
 	if (s_inp) {
 		/* Assume lock is held here */
 		it->inp = s_inp;
 		SCTP_INP_INCR_REF(it->inp);
 		it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP;
 	} else {
 		SCTP_INP_INFO_RLOCK();
 		it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead));
 		if (it->inp) {
 			SCTP_INP_INCR_REF(it->inp);
 		}
 		SCTP_INP_INFO_RUNLOCK();
 		it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP;
 	}
 	SCTP_IPI_ITERATOR_WQ_LOCK();
 	TAILQ_INSERT_TAIL(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
 	if (sctp_it_ctl.iterator_running == 0) {
 		sctp_wakeup_iterator();
 	}
 	SCTP_IPI_ITERATOR_WQ_UNLOCK();
 	/* sa_ignore MEMLEAK {memory is put on the tailq for the iterator} */
 	return (0);
 }

The Tor Browser / annotate

netwerk/sctp/src/netinet/sctp_pcb.c@ac0c01689b40 (annotated)

netwerk/sctp/src/netinet/sctp_pcb.c