diff --git a/usrsctplib/netinet/sctp_pcb.c b/usrsctplib/netinet/sctp_pcb.c
new file mode 100755
index 0000000..ec3ff6d
--- /dev/null
+++ b/usrsctplib/netinet/sctp_pcb.c
@@ -0,0 +1,8182 @@
+/*-
+ * 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 310590 2016-12-26 11:06:41Z 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 >= 1000000
+#include <netinet/sctp_dtrace_define.h>
+#endif
+#if defined(INET) || defined(INET6)
+#if !defined(__Userspace_os_Windows)
+#include <netinet/udp.h>
+#endif
+#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>
+#if !defined(__Userspace_os_Windows)
+#include <netdb.h>
+#endif
+#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
+
+/* 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 unusable\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 unusable\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 = &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 = &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;
+                /*
+		 * We don't set the flag. This means that the structure will
+		 * hang around in EP's that have bound specific to it until
+		 * they close. This gives us TCP like behavior if someone
+		 * removes an address (or for that matter adds it right back).
+		 */
+		/* 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 defined(__FreeBSD__)
+						if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
+						                     &sin->sin_addr) != 0) {
+							continue;
+						}
+#endif
+						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 defined(__FreeBSD__)
+						if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
+						                     &sin6->sin6_addr) != 0) {
+							continue;
+						}
+#endif
+						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 = &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 = &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 = &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;
+		}
+#if defined(__FreeBSD__)
+		switch (to->sa_family) {
+#ifdef INET
+		case AF_INET:
+		{
+			struct sockaddr_in *sin;
+
+			sin = (struct sockaddr_in *)to;
+			if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
+			                     &sin->sin_addr) != 0) {
+				SCTP_INP_RUNLOCK(inp);
+				continue;
+			}
+			break;
+		}
+#endif
+#ifdef INET6
+		case AF_INET6:
+		{
+			struct sockaddr_in6 *sin6;
+
+			sin6 = (struct sockaddr_in6 *)to;
+			if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
+			                     &sin6->sin6_addr) != 0) {
+				SCTP_INP_RUNLOCK(inp);
+				continue;
+			}
+			break;
+		}
+#endif
+		default:
+			SCTP_INP_RUNLOCK(inp);
+			continue;
+		}
+#endif
+#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", __func__);
+					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)];
+		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 */
+			switch (nam->sa_family) {
+#ifdef INET
+			case AF_INET:
+				if ((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;
+				}
+#if defined(__FreeBSD__)
+				if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
+				                     &sin->sin_addr) != 0) {
+					SCTP_INP_RUNLOCK(inp);
+					continue;
+				}
+#endif
+				break;
+#endif
+#ifdef INET6
+			case AF_INET6:
+				/* A V6 address and the endpoint is NOT bound V6 */
+				if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
+					SCTP_INP_RUNLOCK(inp);
+					continue;
+				}
+#if defined(__FreeBSD__)
+				if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
+				                     &sin6->sin6_addr) != 0) {
+					SCTP_INP_RUNLOCK(inp);
+					continue;
+				}
+#endif
+				break;
+#endif
+			default:
+				break;
+			}
+			/* 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",
+					__func__);
+				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, *ninp;
+
+	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);
+	SCTP_INP_INFO_WLOCK();
+	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_SAFE(tinp, head, sctp_hash, ninp) {
+		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);
+	SCTP_INP_INFO_WUNLOCK();
+	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))];
+	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)
+{
+	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);
+		}
+	}
+
+	if (inp_p) {
+		stcb = sctp_findassociation_addr_sa(src, dst, inp_p, netp,
+		                                    1, vrf_id);
+		inp = *inp_p;
+	} else {
+		stcb = sctp_findassociation_addr_sa(src, dst, &inp, netp,
+		                                    1, 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;
+	union sctp_sockstore 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",
+			__func__);
+		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",
+				__func__);
+			return (NULL);
+		}
+		sin6 = &remote_store.sin6;
+		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",
+				__func__);
+			return (NULL);
+		}
+		sin = &remote_store.sin;
+		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,
+		    &remote_store.sa, 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;
+#if defined(__FreeBSD__)
+	inp->ip_inp.inp.inp_cred = crhold(so->so_cred);
+#endif
+#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->max_cwnd = 0;
+	inp->sctp_cmt_on_off = SCTP_BASE_SYSCTL(sctp_cmt_on_off);
+	inp->ecn_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_ecn_enable);
+	inp->prsctp_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_pr_enable);
+	inp->auth_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_auth_enable);
+	inp->asconf_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_asconf_enable);
+	inp->reconfig_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_reconfig_enable);
+	inp->nrsack_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_nrsack_enable);
+	inp->pktdrop_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_pktdrop_enable);
+	inp->idata_supported = 0;
+
+#if defined(__FreeBSD__)
+	inp->fibnum = so->so_fibnum;
+#else
+	inp->fibnum = 0;
+#endif
+#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) {
+#if defined(__FreeBSD__)
+		crfree(inp->ip_inp.inp.inp_cred);
+#endif
+		SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
+		SCTP_INP_INFO_WUNLOCK();
+		return (ENOBUFS);
+	}
+#ifdef IPSEC
+#if !(defined(__APPLE__))
+	error = ipsec_init_policy(so, &inp->ip_inp.inp.inp_sp);
+#else
+	error = 0;
+#endif
+	if (error != 0) {
+#if defined(__FreeBSD__)
+		crfree(inp->ip_inp.inp.inp_cred);
+#endif
+		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;
+#if defined(__FreeBSD__)
+		crfree(inp->ip_inp.inp.inp_cred);
+#ifdef IPSEC
+		ipsec_delete_pcbpolicy(&inp->ip_inp.inp);
+#endif
+#endif
+		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;
+#if defined(__FreeBSD__)
+		crfree(inp->ip_inp.inp.inp_cred);
+#ifdef IPSEC
+		ipsec_delete_pcbpolicy(&inp->ip_inp.inp);
+#endif
+#endif
+		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);
+#if defined(__FreeBSD__)
+		crfree(inp->ip_inp.inp.inp_cred);
+#ifdef IPSEC
+		ipsec_delete_pcbpolicy(&inp->ip_inp.inp);
+#endif
+#endif
+		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;
+#if defined(__FreeBSD__)
+		crfree(inp->ip_inp.inp.inp_cred);
+#ifdef IPSEC
+		ipsec_delete_pcbpolicy(&inp->ip_inp.inp);
+#endif
+#endif
+		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();
+	if (inp->asconf_supported) {
+		sctp_auth_add_chunk(SCTP_ASCONF, m->local_auth_chunks);
+		sctp_auth_add_chunk(SCTP_ASCONF_ACK, m->local_auth_chunks);
+	}
+	m->default_dscp = 0;
+#ifdef INET6
+	m->default_flowlabel = 0;
+#endif
+	m->port = 0; /* encapsulation disabled by default */
+	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);
+}
+
+/*
+ * insert an laddr entry with the given ifa for the desired list
+ */
+static 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)
+ */
+static 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();
+}
+
+#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;
+	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 */
+				  1
+#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
+		}
+#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;
+		union sctp_sockstore store;
+
+		memset(&store, 0, sizeof(store));
+		switch (addr->sa_family) {
+#ifdef INET
+		case AF_INET:
+			memcpy(&store.sin, addr, sizeof(struct sockaddr_in));
+			store.sin.sin_port = 0;
+			break;
+#endif
+#ifdef INET6
+		case AF_INET6:
+			memcpy(&store.sin6, addr, sizeof(struct sockaddr_in6));
+			store.sin6.sin6_port = 0;
+			break;
+#endif
+#if defined(__Userspace__)
+		case AF_CONN:
+			memcpy(&store.sconn, addr, sizeof(struct sockaddr_conn));
+			store.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(&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_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
+				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.ss_functions.sctp_ss_is_user_msgs_incomplete)(asoc, &asoc->asoc)) {
+					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 */
+				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.ss_functions.sctp_ss_is_user_msgs_incomplete)(asoc, &asoc->asoc)) {
+					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_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
+					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_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
+			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_free_a_readq(NULL, sq);
+	}
+	/* 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.
+	 */
+#ifdef IPSEC
+	ipsec_delete_pcbpolicy(ip_pcb);
+#endif
+#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__)
+	crfree(inp->ip_inp.inp.inp_cred);
+	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, uint16_t port, 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) {
+			if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
+				stcb->asoc.scope.ipv4_local_scope = 1;
+			}
+		} 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 = 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,
+	             stcb->sctp_ep->fibnum);
+
+#if defined(__Userspace__)
+	net->src_addr_selected = 0;
+#else
+	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,
+								0,
+								stcb->asoc.vrf_id);
+		if (net->ro._s_addr != NULL) {
+			net->src_addr_selected = 1;
+			/* Now get the interface MTU */
+			if (net->ro._s_addr->ifn_p != NULL) {
+				net->mtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p);
+			}
+		} else {
+			net->src_addr_selected = 0;
+		}
+		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;
+			}
+		}
+	} else {
+		net->src_addr_selected = 0;
+	}
+#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 defined(INET) || defined(INET6)
+	if (net->port) {
+		net->mtu -= (uint32_t)sizeof(struct udphdr);
+	}
+#endif
+	if (from == SCTP_ALLOC_ASOC) {
+		stcb->asoc.smallest_mtu = net->mtu;
+	}
+	if (stcb->asoc.smallest_mtu > net->mtu) {
+		sctp_pathmtu_adjustment(stcb, 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;
+#if defined(__FreeBSD__)
+	/* Choose an initial flowid. */
+	net->flowid = stcb->asoc.my_vtag ^
+	              ntohs(stcb->rport) ^
+	              ntohs(stcb->sctp_ep->sctp_lport);
+	net->flowtype = M_HASHTYPE_OPAQUE_HASH;
+#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,
+                uint16_t o_streams, uint16_t port,
+#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, o_streams))) {
+		/* 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, port, 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;
+	}
+}
+
+void
+sctp_clean_up_stream(struct sctp_tcb *stcb, struct sctp_readhead *rh)
+{
+	struct sctp_tmit_chunk *chk, *nchk;
+	struct sctp_queued_to_read *ctl, *nctl;
+	TAILQ_FOREACH_SAFE(ctl, rh, next_instrm, nctl) {
+		TAILQ_REMOVE(rh, ctl, next_instrm);
+		ctl->on_strm_q = 0;
+		if (ctl->on_read_q == 0) {
+			sctp_free_remote_addr(ctl->whoFrom);
+			if (ctl->data) {
+				sctp_m_freem(ctl->data);
+				ctl->data = NULL;
+			}
+		}
+		/* Reassembly free? */
+		TAILQ_FOREACH_SAFE(chk, &ctl->reasm, sctp_next, nchk) {
+			TAILQ_REMOVE(&ctl->reasm, 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*/
+		}
+		/*
+		 * We don't free the address here
+		 * since all the net's were freed
+		 * above.
+		 */
+		if (ctl->on_read_q == 0) {
+			sctp_free_a_readq(stcb, ctl);
+		}
+	}
+}
+
+#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->mid & 0x0000ffff);
+						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
+				socantsendmore(so);
+				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) {
+			atomic_subtract_int(&asoc->stream_queue_cnt, 1);
+			TAILQ_REMOVE(&outs->outqueue, sp, next);
+			stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, outs, sp, 0);
+			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,
+					                0, (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_free_a_readq(stcb, sq);
+		/*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.sid].chunks_on_queues > 0) {
+			asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
+#ifdef INVARIANTS
+		} else {
+			panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
+#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,
+				                0, 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.sid].chunks_on_queues > 0) {
+				asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
+#ifdef INVARIANTS
+			} else {
+				panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
+#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,
+				                0, 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*/
+	}
+	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) {
+		for (i = 0; i < asoc->streamincnt; i++) {
+			sctp_clean_up_stream(stcb, &asoc->strmin[i].inqueue);
+			sctp_clean_up_stream(stcb, &asoc->strmin[i].uno_inqueue);
+		}
+		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",
+				__func__);
+			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;
+	struct sctp_tcb *stcb;
+	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;
+		}
+		LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
+			sctp_add_local_addr_restricted(stcb, ifa);
+		}
+	}
+	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 == 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;
+}
+
+/*
+ * 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,
+	       0, "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,
+		       0, "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 >= 1300000
+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;
+/* FIX ME */
+	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() function.
+	 */
+	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_PROCESS_LEVEL_LOCKS)
+#if !defined(__Userspace_os_Windows)
+	pthread_mutexattr_init(&SCTP_BASE_VAR(mtx_attr));
+#ifdef INVARIANTS
+	pthread_mutexattr_settype(&SCTP_BASE_VAR(mtx_attr), PTHREAD_MUTEX_ERRORCHECK);
+#endif
+#endif
+#endif
+#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 >= 1300000
+	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(THREAD_SUPPORT) && (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 (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
+		SCTP_PRINTF("%s: race condition on teardown.\n", __func__);
+		return;
+	}
+	SCTP_BASE_VAR(sctp_pcb_initialized) = 0;
+#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,
+		       0, "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);
+	pthread_mutexattr_destroy(&SCTP_BASE_VAR(mtx_attr));
+#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.
+	 */
+#if defined(__FreeBSD__)
+retry:
+#endif
+	SCTP_IPI_ITERATOR_WQ_LOCK();
+#if defined(__FreeBSD__)
+	/*
+	 * sctp_iterator_worker() might be working on an it entry without
+	 * holding the lock.  We won't find it on the list either and
+	 * continue and free/destroy it.  While holding the lock, spin, to
+	 * avoid the race condition as sctp_iterator_worker() will have to
+	 * wait to re-aquire the lock.
+	 */
+	if (sctp_it_ctl.iterator_running != 0 || sctp_it_ctl.cur_it != NULL) {
+		SCTP_IPI_ITERATOR_WQ_UNLOCK();
+		SCTP_PRINTF("%s: Iterator running while we held the lock. Retry. "
+		            "cur_it=%p\n", __func__, sctp_it_ctl.cur_it);
+		DELAY(10);
+		goto retry;
+	}
+#endif
+	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_DRAIN(&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();
+		if (wi->action == SCTP_DEL_IP_ADDRESS) {
+			SCTP_FREE(wi->ifa, SCTP_M_IFA);
+		}
+		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));
+
+	/* 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
+	/* Get rid of other stuff too. */
+	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(__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
+#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, uint16_t port)
+{
+	/*
+	 * 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 peer_supports_ecn;
+	uint8_t peer_supports_prsctp;
+	uint8_t peer_supports_auth;
+	uint8_t peer_supports_asconf;
+	uint8_t peer_supports_asconf_ack;
+	uint8_t peer_supports_reconfig;
+	uint8_t peer_supports_nrsack;
+	uint8_t peer_supports_pktdrop;
+	uint8_t peer_supports_idata;
+#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;
+	}
+	peer_supports_idata = 0;
+	peer_supports_ecn = 0;
+	peer_supports_prsctp = 0;
+	peer_supports_auth = 0;
+	peer_supports_asconf = 0;
+	peer_supports_reconfig = 0;
+	peer_supports_nrsack = 0;
+	peer_supports_pktdrop = 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, port, 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, port, 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, port, 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);
+	}
+	/* 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, port, 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) {
+							struct mbuf *op_err;
+							char msg[SCTP_DIAG_INFO_LEN];
+
+							/* in setup state we abort this guy */
+							snprintf(msg, sizeof(msg),
+							         "%s:%d at %s", __FILE__, __LINE__, __func__);
+							op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
+							         msg);
+							sctp_abort_an_association(stcb_tmp->sctp_ep,
+										  stcb_tmp, op_err,
+							                          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, port, 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) {
+							struct mbuf *op_err;
+							char msg[SCTP_DIAG_INFO_LEN];
+
+							/* in setup state we abort this guy */
+							snprintf(msg, sizeof(msg),
+							         "%s:%d at %s", __FILE__, __LINE__, __func__);
+							op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
+							         msg);
+							sctp_abort_an_association(stcb_tmp->sctp_ep,
+										  stcb_tmp, op_err,
+							                          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) {
+			peer_supports_ecn = 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
+
+			if (stcb->asoc.asconf_supported == 0) {
+				return (-100);
+			}
+			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 */
+			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);
+			}
+			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:
+					peer_supports_asconf = 1;
+					break;
+				case SCTP_ASCONF_ACK:
+					peer_supports_asconf_ack = 1;
+					break;
+				case SCTP_FORWARD_CUM_TSN:
+					peer_supports_prsctp = 1;
+					break;
+				case SCTP_PACKET_DROPPED:
+					peer_supports_pktdrop = 1;
+					break;
+				case SCTP_NR_SELECTIVE_ACK:
+					peer_supports_nrsack = 1;
+					break;
+				case SCTP_STREAM_RESET:
+					peer_supports_reconfig = 1;
+					break;
+				case SCTP_AUTHENTICATION:
+					peer_supports_auth = 1;
+					break;
+				case SCTP_IDATA:
+					peer_supports_idata = 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) {
+			uint16_t num_hmacs;
+			uint16_t 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 ((stcb->asoc.ecn_supported == 1) &&
+	    (peer_supports_ecn == 0)) {
+		stcb->asoc.ecn_supported = 0;
+	}
+	if ((stcb->asoc.prsctp_supported == 1) &&
+	    (peer_supports_prsctp == 0)) {
+		stcb->asoc.prsctp_supported = 0;
+	}
+	if ((stcb->asoc.auth_supported == 1) &&
+	    ((peer_supports_auth == 0) ||
+	     (got_random == 0) || (got_hmacs == 0))) {
+		stcb->asoc.auth_supported = 0;
+	}
+	if ((stcb->asoc.asconf_supported == 1) &&
+	    ((peer_supports_asconf == 0) || (peer_supports_asconf_ack == 0) ||
+	     (stcb->asoc.auth_supported == 0) ||
+	     (saw_asconf == 0) || (saw_asconf_ack == 0))) {
+		stcb->asoc.asconf_supported = 0;
+	}
+	if ((stcb->asoc.reconfig_supported == 1) &&
+	    (peer_supports_reconfig == 0)) {
+		stcb->asoc.reconfig_supported = 0;
+	}
+	if ((stcb->asoc.idata_supported == 1) &&
+	    (peer_supports_idata == 0)) {
+		stcb->asoc.idata_supported = 0;
+	}
+	if ((stcb->asoc.nrsack_supported == 1) &&
+	    (peer_supports_nrsack == 0)) {
+		stcb->asoc.nrsack_supported = 0;
+	}
+	if ((stcb->asoc.pktdrop_supported == 1) &&
+	    (peer_supports_pktdrop == 0)){
+		stcb->asoc.pktdrop_supported = 0;
+	}
+	/* validate authentication required parameters */
+	if ((peer_supports_auth == 0) && (got_chklist == 1)) {
+		/* peer does not support auth but sent a chunks list? */
+		return (-31);
+	}
+	if ((peer_supports_asconf == 1) && (peer_supports_auth == 0)) {
+		/* peer supports asconf but not auth? */
+		return (-32);
+	} else if ((peer_supports_asconf == 1) &&
+	           (peer_supports_auth == 1) &&
+		   ((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))];
+	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);
+		}
+	}
+	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;
+	/* 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_instrm, nctl) {
+#ifdef INVARIANTS
+			if (ctl->on_strm_q != SCTP_ON_ORDERED ) {
+				panic("Huh control: %p on_q: %d -- not ordered?",
+				      ctl, ctl->on_strm_q);
+			}
+#endif
+			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);
+				if (ctl->on_read_q) {
+					TAILQ_REMOVE(&stcb->sctp_ep->read_queue, ctl, next);
+					ctl->on_read_q = 0;
+				}
+				TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, ctl, next_instrm);
+				ctl->on_strm_q = 0;
+				if (ctl->data) {
+					sctp_m_freem(ctl->data);
+					ctl->data = NULL;
+				}
+				sctp_free_remote_addr(ctl->whoFrom);
+				/* Now its reasm? */
+				TAILQ_FOREACH_SAFE(chk, &ctl->reasm, sctp_next, nchk) {
+					cnt++;
+					SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.tsn, 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(&ctl->reasm, chk, sctp_next);
+					if (chk->data) {
+						sctp_m_freem(chk->data);
+						chk->data = NULL;
+					}
+					sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
+				}
+				sctp_free_a_readq(stcb, ctl);
+			}
+		}
+		TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[strmat].uno_inqueue, next_instrm, nctl) {
+#ifdef INVARIANTS
+			if (ctl->on_strm_q != SCTP_ON_UNORDERED ) {
+				panic("Huh control: %p on_q: %d -- not unordered?",
+				      ctl, ctl->on_strm_q);
+			}
+#endif
+			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);
+				if (ctl->on_read_q) {
+					TAILQ_REMOVE(&stcb->sctp_ep->read_queue, ctl, next);
+					ctl->on_read_q = 0;
+				}
+				TAILQ_REMOVE(&asoc->strmin[strmat].uno_inqueue, ctl, next_instrm);
+				ctl->on_strm_q = 0;
+				if (ctl->data) {
+					sctp_m_freem(ctl->data);
+					ctl->data = NULL;
+				}
+				sctp_free_remote_addr(ctl->whoFrom);
+				/* Now its reasm? */
+				TAILQ_FOREACH_SAFE(chk, &ctl->reasm, sctp_next, nchk) {
+					cnt++;
+					SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.tsn, 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(&ctl->reasm, chk, sctp_next);
+					if (chk->data) {
+						sctp_m_freem(chk->data);
+						chk->data = NULL;
+					}
+					sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
+				}
+				sctp_free_a_readq(stcb, ctl);
+			}
+		}
+	}
+	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);
+	}
+	if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
+		SCTP_PRINTF("%s: abort on initialize being %d\n", __func__,
+		            SCTP_BASE_VAR(sctp_pcb_initialized));
+		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();
+	if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
+		SCTP_IPI_ITERATOR_WQ_UNLOCK();
+		SCTP_PRINTF("%s: rollback on initialize being %d it=%p\n", __func__,
+		            SCTP_BASE_VAR(sctp_pcb_initialized), it);
+		SCTP_FREE(it, SCTP_M_ITER);
+		return (-1);
+	}
+	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);
+}