Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 982 insertions, 0 deletions

diff --git a/netwerk/sctp/src/netinet/sctp_bsd_addr.c b/netwerk/sctp/src/netinet/sctp_bsd_addr.c
new file mode 100644
index 0000000000..7b40fc4084
--- /dev/null
+++ b/netwerk/sctp/src/netinet/sctp_bsd_addr.c
@@ -0,0 +1,982 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 2001-2007, 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.
+ */
+
+#if defined(__FreeBSD__) && !defined(__Userspace__)
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+#endif
+
+#include <netinet/sctp_os.h>
+#include <netinet/sctp_var.h>
+#include <netinet/sctp_pcb.h>
+#include <netinet/sctp_header.h>
+#include <netinet/sctputil.h>
+#include <netinet/sctp_output.h>
+#include <netinet/sctp_bsd_addr.h>
+#include <netinet/sctp_uio.h>
+#include <netinet/sctputil.h>
+#include <netinet/sctp_timer.h>
+#include <netinet/sctp_asconf.h>
+#include <netinet/sctp_sysctl.h>
+#include <netinet/sctp_indata.h>
+#if defined(__FreeBSD__) && !defined(__Userspace__)
+#include <sys/unistd.h>
+#endif
+
+/* Declare all of our malloc named types */
+MALLOC_DEFINE(SCTP_M_MAP, "sctp_map", "sctp asoc map descriptor");
+MALLOC_DEFINE(SCTP_M_STRMI, "sctp_stri", "sctp stream in array");
+MALLOC_DEFINE(SCTP_M_STRMO, "sctp_stro", "sctp stream out array");
+MALLOC_DEFINE(SCTP_M_ASC_ADDR, "sctp_aadr", "sctp asconf address");
+MALLOC_DEFINE(SCTP_M_ASC_IT, "sctp_a_it", "sctp asconf iterator");
+MALLOC_DEFINE(SCTP_M_AUTH_CL, "sctp_atcl", "sctp auth chunklist");
+MALLOC_DEFINE(SCTP_M_AUTH_KY, "sctp_atky", "sctp auth key");
+MALLOC_DEFINE(SCTP_M_AUTH_HL, "sctp_athm", "sctp auth hmac list");
+MALLOC_DEFINE(SCTP_M_AUTH_IF, "sctp_athi", "sctp auth info");
+MALLOC_DEFINE(SCTP_M_STRESET, "sctp_stre", "sctp stream reset");
+MALLOC_DEFINE(SCTP_M_CMSG, "sctp_cmsg", "sctp CMSG buffer");
+MALLOC_DEFINE(SCTP_M_COPYAL, "sctp_cpal", "sctp copy all");
+MALLOC_DEFINE(SCTP_M_VRF, "sctp_vrf", "sctp vrf struct");
+MALLOC_DEFINE(SCTP_M_IFA, "sctp_ifa", "sctp ifa struct");
+MALLOC_DEFINE(SCTP_M_IFN, "sctp_ifn", "sctp ifn struct");
+MALLOC_DEFINE(SCTP_M_TIMW, "sctp_timw", "sctp time block");
+MALLOC_DEFINE(SCTP_M_MVRF, "sctp_mvrf", "sctp mvrf pcb list");
+MALLOC_DEFINE(SCTP_M_ITER, "sctp_iter", "sctp iterator control");
+MALLOC_DEFINE(SCTP_M_SOCKOPT, "sctp_socko", "sctp socket option");
+MALLOC_DEFINE(SCTP_M_MCORE, "sctp_mcore", "sctp mcore queue");
+
+/* Global NON-VNET structure that controls the iterator */
+struct iterator_control sctp_it_ctl;
+#if !(defined(__FreeBSD__) && !defined(__Userspace__))
+
+static void
+sctp_cleanup_itqueue(void)
+{
+	struct sctp_iterator *it, *nit;
+
+	TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
+		if (it->function_atend != NULL) {
+			(*it->function_atend) (it->pointer, it->val);
+		}
+		TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
+		SCTP_FREE(it, SCTP_M_ITER);
+	}
+}
+#endif
+#if defined(__Userspace__)
+/*__Userspace__ TODO if we use thread based iterator
+ * then the implementation of wakeup will need to change.
+ * Currently we are using timeo_cond for ident so_timeo
+ * but that is not sufficient if we need to use another ident
+ * like wakeup(&sctppcbinfo.iterator_running);
+ */
+#endif
+
+void
+sctp_wakeup_iterator(void)
+{
+#if defined(SCTP_PROCESS_LEVEL_LOCKS)
+#if defined(_WIN32)
+	WakeAllConditionVariable(&sctp_it_ctl.iterator_wakeup);
+#else
+	pthread_cond_broadcast(&sctp_it_ctl.iterator_wakeup);
+#endif
+#else
+	wakeup(&sctp_it_ctl.iterator_running);
+#endif
+}
+
+#if defined(__Userspace__)
+static void *
+#else
+static void
+#endif
+sctp_iterator_thread(void *v SCTP_UNUSED)
+{
+#if defined(__Userspace__)
+	sctp_userspace_set_threadname("SCTP iterator");
+#endif
+	SCTP_IPI_ITERATOR_WQ_LOCK();
+	/* In FreeBSD this thread never terminates. */
+#if defined(__FreeBSD__) && !defined(__Userspace__)
+	for (;;) {
+#else
+	while ((sctp_it_ctl.iterator_flags & SCTP_ITERATOR_MUST_EXIT) == 0) {
+#endif
+#if !defined(__Userspace__)
+		msleep(&sctp_it_ctl.iterator_running,
+#if defined(__FreeBSD__)
+		       &sctp_it_ctl.ipi_iterator_wq_mtx,
+#elif defined(__APPLE__)
+		       sctp_it_ctl.ipi_iterator_wq_mtx,
+#endif
+		       0, "waiting_for_work", 0);
+#else
+#if defined(_WIN32)
+		SleepConditionVariableCS(&sctp_it_ctl.iterator_wakeup, &sctp_it_ctl.ipi_iterator_wq_mtx, INFINITE);
+#else
+		pthread_cond_wait(&sctp_it_ctl.iterator_wakeup, &sctp_it_ctl.ipi_iterator_wq_mtx);
+#endif
+#endif
+#if !(defined(__FreeBSD__) && !defined(__Userspace__))
+		if (sctp_it_ctl.iterator_flags & SCTP_ITERATOR_MUST_EXIT) {
+			break;
+		}
+#endif
+		sctp_iterator_worker();
+	}
+#if !(defined(__FreeBSD__) && !defined(__Userspace__))
+	/* Now this thread needs to be terminated */
+	sctp_cleanup_itqueue();
+	sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_EXITED;
+	SCTP_IPI_ITERATOR_WQ_UNLOCK();
+#if defined(__Userspace__)
+	sctp_wakeup_iterator();
+	return (NULL);
+#else
+	wakeup(&sctp_it_ctl.iterator_flags);
+	thread_terminate(current_thread());
+#ifdef INVARIANTS
+	panic("Hmm. thread_terminate() continues...");
+#endif
+#endif
+#endif
+}
+
+void
+sctp_startup_iterator(void)
+{
+	if (sctp_it_ctl.thread_proc) {
+		/* You only get one */
+		return;
+	}
+	/* Initialize global locks here, thus only once. */
+	SCTP_ITERATOR_LOCK_INIT();
+	SCTP_IPI_ITERATOR_WQ_INIT();
+	TAILQ_INIT(&sctp_it_ctl.iteratorhead);
+#if defined(__Userspace__)
+	if (sctp_userspace_thread_create(&sctp_it_ctl.thread_proc, &sctp_iterator_thread)) {
+		SCTP_PRINTF("ERROR: Creating sctp_iterator_thread failed.\n");
+	} else {
+		SCTP_BASE_VAR(iterator_thread_started) = 1;
+	}
+#elif defined(__FreeBSD__)
+	kproc_create(sctp_iterator_thread,
+	             (void *)NULL,
+	             &sctp_it_ctl.thread_proc,
+	             0,
+	             SCTP_KTHREAD_PAGES,
+	             SCTP_KTRHEAD_NAME);
+#elif defined(__APPLE__)
+	kernel_thread_start((thread_continue_t)sctp_iterator_thread, NULL, &sctp_it_ctl.thread_proc);
+#endif
+}
+
+#ifdef INET6
+
+#if defined(__Userspace__)
+/* __Userspace__ TODO. struct in6_ifaddr is defined in sys/netinet6/in6_var.h
+   ip6_use_deprecated is defined as  int ip6_use_deprecated = 1; in /src/sys/netinet6/in6_proto.c
+ */
+void
+sctp_gather_internal_ifa_flags(struct sctp_ifa *ifa)
+{
+    return; /* stub */
+}
+#else
+void
+sctp_gather_internal_ifa_flags(struct sctp_ifa *ifa)
+{
+	struct in6_ifaddr *ifa6;
+
+	ifa6 = (struct in6_ifaddr *)ifa->ifa;
+	ifa->flags = ifa6->ia6_flags;
+	if (!MODULE_GLOBAL(ip6_use_deprecated)) {
+		if (ifa->flags &
+		    IN6_IFF_DEPRECATED) {
+			ifa->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE;
+		} else {
+			ifa->localifa_flags &= ~SCTP_ADDR_IFA_UNUSEABLE;
+		}
+	} else {
+		ifa->localifa_flags &= ~SCTP_ADDR_IFA_UNUSEABLE;
+	}
+	if (ifa->flags &
+	    (IN6_IFF_DETACHED |
+	     IN6_IFF_ANYCAST |
+	     IN6_IFF_NOTREADY)) {
+		ifa->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE;
+	} else {
+		ifa->localifa_flags &= ~SCTP_ADDR_IFA_UNUSEABLE;
+	}
+}
+#endif /* __Userspace__ */
+#endif /* INET6 */
+
+#if !defined(__Userspace__)
+static uint32_t
+sctp_is_desired_interface_type(struct ifnet *ifn)
+{
+	int result;
+
+	/* check the interface type to see if it's one we care about */
+#if defined(__APPLE__) && !defined(__Userspace__)
+	switch(ifnet_type(ifn)) {
+#else
+	switch (ifn->if_type) {
+#endif
+	case IFT_ETHER:
+	case IFT_ISO88023:
+	case IFT_ISO88024:
+	case IFT_ISO88025:
+	case IFT_ISO88026:
+	case IFT_STARLAN:
+	case IFT_P10:
+	case IFT_P80:
+	case IFT_HY:
+	case IFT_FDDI:
+	case IFT_XETHER:
+	case IFT_ISDNBASIC:
+	case IFT_ISDNPRIMARY:
+	case IFT_PTPSERIAL:
+	case IFT_OTHER:
+	case IFT_PPP:
+	case IFT_LOOP:
+	case IFT_SLIP:
+	case IFT_GIF:
+	case IFT_L2VLAN:
+	case IFT_STF:
+#if !(defined(__APPLE__) && !defined(__Userspace__))
+	case IFT_IP:
+	case IFT_IPOVERCDLC:
+	case IFT_IPOVERCLAW:
+	case IFT_PROPVIRTUAL: /* NetGraph Virtual too */
+	case IFT_VIRTUALIPADDRESS:
+#endif
+		result = 1;
+		break;
+	default:
+		result = 0;
+	}
+
+	return (result);
+}
+#endif
+#if defined(__APPLE__) && !defined(__Userspace__)
+
+int
+sctp_is_vmware_interface(struct ifnet *ifn)
+{
+	return (strncmp(ifnet_name(ifn), "vmnet", 5) == 0);
+}
+
+#endif
+
+#if defined(_WIN32) && defined(__Userspace__)
+#define SCTP_BSD_FREE(x) HeapFree(GetProcessHeap(), 0, (x))
+static void
+sctp_init_ifns_for_vrf(int vrfid)
+{
+#if defined(INET) || defined(INET6)
+	struct sctp_ifa *sctp_ifa;
+	DWORD Err, AdapterAddrsSize;
+	PIP_ADAPTER_ADDRESSES pAdapterAddrs, pAdapt;
+	PIP_ADAPTER_UNICAST_ADDRESS pUnicast;
+#endif
+
+#ifdef INET
+	AdapterAddrsSize = 0;
+
+	if ((Err = GetAdaptersAddresses(AF_INET, 0, NULL, NULL, &AdapterAddrsSize)) != 0) {
+		if ((Err != ERROR_BUFFER_OVERFLOW) && (Err != ERROR_INSUFFICIENT_BUFFER)) {
+			SCTP_PRINTF("GetAdaptersV4Addresses() sizing failed with error code %d\n", Err);
+			SCTP_PRINTF("err = %d; AdapterAddrsSize = %d\n", Err, AdapterAddrsSize);
+			return;
+		}
+	}
+
+	/* Allocate memory from sizing information */
+	if ((pAdapterAddrs = (PIP_ADAPTER_ADDRESSES) GlobalAlloc(GPTR, AdapterAddrsSize)) == NULL) {
+		SCTP_PRINTF("Memory allocation error!\n");
+		return;
+	}
+	/* Get actual adapter information */
+	if ((Err = GetAdaptersAddresses(AF_INET, 0, NULL, pAdapterAddrs, &AdapterAddrsSize)) != ERROR_SUCCESS) {
+		SCTP_PRINTF("GetAdaptersV4Addresses() failed with error code %d\n", Err);
+		SCTP_BSD_FREE(pAdapterAddrs);
+		return;
+	}
+	/* Enumerate through each returned adapter and save its information */
+	for (pAdapt = pAdapterAddrs; pAdapt; pAdapt = pAdapt->Next) {
+		if (pAdapt->IfType == IF_TYPE_IEEE80211 || pAdapt->IfType == IF_TYPE_ETHERNET_CSMACD) {
+			for (pUnicast = pAdapt->FirstUnicastAddress; pUnicast; pUnicast = pUnicast->Next) {
+				if (IN4_ISLINKLOCAL_ADDRESS(&(((struct sockaddr_in *)(pUnicast->Address.lpSockaddr))->sin_addr))) {
+					continue;
+				}
+				sctp_ifa = sctp_add_addr_to_vrf(0,
+				                                NULL,
+				                                pAdapt->IfIndex,
+				                                (pAdapt->IfType == IF_TYPE_IEEE80211)?MIB_IF_TYPE_ETHERNET:pAdapt->IfType,
+				                                pAdapt->AdapterName,
+				                                NULL,
+				                                pUnicast->Address.lpSockaddr,
+				                                pAdapt->Flags,
+				                                0);
+				if (sctp_ifa) {
+					sctp_ifa->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
+				}
+			}
+		}
+	}
+	SCTP_BSD_FREE(pAdapterAddrs);
+#endif
+#ifdef INET6
+	AdapterAddrsSize = 0;
+
+	if ((Err = GetAdaptersAddresses(AF_INET6, 0, NULL, NULL, &AdapterAddrsSize)) != 0) {
+		if ((Err != ERROR_BUFFER_OVERFLOW) && (Err != ERROR_INSUFFICIENT_BUFFER)) {
+			SCTP_PRINTF("GetAdaptersV6Addresses() sizing failed with error code %d\n", Err);
+			SCTP_PRINTF("err = %d; AdapterAddrsSize = %d\n", Err, AdapterAddrsSize);
+			return;
+		}
+	}
+	/* Allocate memory from sizing information */
+	if ((pAdapterAddrs = (PIP_ADAPTER_ADDRESSES) GlobalAlloc(GPTR, AdapterAddrsSize)) == NULL) {
+		SCTP_PRINTF("Memory allocation error!\n");
+		return;
+	}
+	/* Get actual adapter information */
+	if ((Err = GetAdaptersAddresses(AF_INET6, 0, NULL, pAdapterAddrs, &AdapterAddrsSize)) != ERROR_SUCCESS) {
+		SCTP_PRINTF("GetAdaptersV6Addresses() failed with error code %d\n", Err);
+		SCTP_BSD_FREE(pAdapterAddrs);
+		return;
+	}
+	/* Enumerate through each returned adapter and save its information */
+	for (pAdapt = pAdapterAddrs; pAdapt; pAdapt = pAdapt->Next) {
+		if (pAdapt->IfType == IF_TYPE_IEEE80211 || pAdapt->IfType == IF_TYPE_ETHERNET_CSMACD) {
+			for (pUnicast = pAdapt->FirstUnicastAddress; pUnicast; pUnicast = pUnicast->Next) {
+				sctp_ifa = sctp_add_addr_to_vrf(0,
+				                                NULL,
+				                                pAdapt->Ipv6IfIndex,
+				                                (pAdapt->IfType == IF_TYPE_IEEE80211)?MIB_IF_TYPE_ETHERNET:pAdapt->IfType,
+				                                pAdapt->AdapterName,
+				                                NULL,
+				                                pUnicast->Address.lpSockaddr,
+				                                pAdapt->Flags,
+				                                0);
+				if (sctp_ifa) {
+					sctp_ifa->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
+				}
+			}
+		}
+	}
+	SCTP_BSD_FREE(pAdapterAddrs);
+#endif
+}
+#elif defined(__Userspace__)
+static void
+sctp_init_ifns_for_vrf(int vrfid)
+{
+#if defined(INET) || defined(INET6)
+	int rc;
+	struct ifaddrs *ifa, *ifas;
+	struct sctp_ifa *sctp_ifa;
+	uint32_t ifa_flags;
+
+	rc = getifaddrs(&ifas);
+	if (rc != 0) {
+		return;
+	}
+	for (ifa = ifas; ifa; ifa = ifa->ifa_next) {
+		if (ifa->ifa_addr == NULL) {
+			continue;
+		}
+#if !defined(INET)
+		if (ifa->ifa_addr->sa_family != AF_INET6) {
+			/* non inet6 skip */
+			continue;
+		}
+#elif !defined(INET6)
+		if (ifa->ifa_addr->sa_family != AF_INET) {
+			/* non inet skip */
+			continue;
+		}
+#else
+		if ((ifa->ifa_addr->sa_family != AF_INET) && (ifa->ifa_addr->sa_family != AF_INET6)) {
+			/* non inet/inet6 skip */
+			continue;
+		}
+#endif
+#if defined(INET6)
+		if ((ifa->ifa_addr->sa_family == AF_INET6) &&
+		    IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr)) {
+			/* skip unspecified addresses */
+			continue;
+		}
+#endif
+#if defined(INET)
+		if (ifa->ifa_addr->sa_family == AF_INET &&
+		    ((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr == 0) {
+			continue;
+		}
+#endif
+		ifa_flags = 0;
+		sctp_ifa = sctp_add_addr_to_vrf(vrfid,
+		                                NULL,
+		                                if_nametoindex(ifa->ifa_name),
+		                                0,
+		                                ifa->ifa_name,
+		                                NULL,
+		                                ifa->ifa_addr,
+		                                ifa_flags,
+		                                0);
+		if (sctp_ifa) {
+			sctp_ifa->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
+		}
+	}
+	freeifaddrs(ifas);
+#endif
+}
+#endif
+#if defined(__APPLE__) && !defined(__Userspace__)
+static void
+sctp_init_ifns_for_vrf(int vrfid)
+{
+	/* Here we must apply ANY locks needed by the
+	 * IFN we access and also make sure we lock
+	 * any IFA that exists as we float through the
+	 * list of IFA's
+	 */
+	struct ifnet **ifnetlist;
+	uint32_t i, j, count;
+	char name[SCTP_IFNAMSIZ];
+	struct ifnet *ifn;
+	struct ifaddr **ifaddrlist;
+	struct ifaddr *ifa;
+	struct in6_ifaddr *ifa6;
+	struct sctp_ifa *sctp_ifa;
+	uint32_t ifa_flags;
+
+	if (ifnet_list_get(IFNET_FAMILY_ANY, &ifnetlist, &count) != 0) {
+		return;
+	}
+	for (i = 0; i < count; i++) {
+		ifn = ifnetlist[i];
+		if (SCTP_BASE_SYSCTL(sctp_ignore_vmware_interfaces) && sctp_is_vmware_interface(ifn)) {
+			continue;
+		}
+		if (sctp_is_desired_interface_type(ifn) == 0) {
+			/* non desired type */
+			continue;
+		}
+		if (ifnet_get_address_list(ifn, &ifaddrlist) != 0) {
+			continue;
+		}
+		for (j = 0; ifaddrlist[j] != NULL; j++) {
+			ifa = ifaddrlist[j];
+			if (ifa->ifa_addr == NULL) {
+				continue;
+			}
+			if ((ifa->ifa_addr->sa_family != AF_INET) && (ifa->ifa_addr->sa_family != AF_INET6)) {
+				/* non inet/inet6 skip */
+				continue;
+			}
+			if (ifa->ifa_addr->sa_family == AF_INET6) {
+				if (IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr)) {
+					/* skip unspecified addresses */
+					continue;
+				}
+			} else {
+				if (((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr == INADDR_ANY) {
+					continue;
+				}
+			}
+			if (ifa->ifa_addr->sa_family == AF_INET6) {
+				ifa6 = (struct in6_ifaddr *)ifa;
+				ifa_flags = ifa6->ia6_flags;
+			} else {
+				ifa_flags = 0;
+			}
+			SCTP_SNPRINTF(name, SCTP_IFNAMSIZ, "%s%d", ifnet_name(ifn), ifnet_unit(ifn));
+			sctp_ifa = sctp_add_addr_to_vrf(vrfid,
+			                                (void *)ifn, /* XXX */
+			                                ifnet_index(ifn),
+			                                ifnet_type(ifn),
+			                                name,
+			                                (void *)ifa, /* XXX */
+			                                ifa->ifa_addr,
+			                                ifa_flags,
+			                                0);
+			if (sctp_ifa) {
+				sctp_ifa->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
+			}
+		}
+		ifnet_free_address_list(ifaddrlist);
+	}
+	ifnet_list_free(ifnetlist);
+}
+#endif
+#if defined(__FreeBSD__) && !defined(__Userspace__)
+static void
+sctp_init_ifns_for_vrf(int vrfid)
+{
+	/* Here we must apply ANY locks needed by the
+	 * IFN we access and also make sure we lock
+	 * any IFA that exists as we float through the
+	 * list of IFA's
+	 */
+	struct epoch_tracker et;
+	struct ifnet *ifn;
+	struct ifaddr *ifa;
+	struct sctp_ifa *sctp_ifa;
+	uint32_t ifa_flags;
+#ifdef INET6
+	struct in6_ifaddr *ifa6;
+#endif
+
+	IFNET_RLOCK();
+	NET_EPOCH_ENTER(et);
+	CK_STAILQ_FOREACH(ifn, &MODULE_GLOBAL(ifnet), if_link) {
+		if (sctp_is_desired_interface_type(ifn) == 0) {
+			/* non desired type */
+			continue;
+		}
+		CK_STAILQ_FOREACH(ifa, &ifn->if_addrhead, ifa_link) {
+			if (ifa->ifa_addr == NULL) {
+				continue;
+			}
+			switch (ifa->ifa_addr->sa_family) {
+#ifdef INET
+			case AF_INET:
+				if (((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr == 0) {
+					continue;
+				}
+				break;
+#endif
+#ifdef INET6
+			case AF_INET6:
+				if (IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr)) {
+					/* skip unspecified addresses */
+					continue;
+				}
+				break;
+#endif
+			default:
+				continue;
+			}
+			switch (ifa->ifa_addr->sa_family) {
+#ifdef INET
+			case AF_INET:
+				ifa_flags = 0;
+				break;
+#endif
+#ifdef INET6
+			case AF_INET6:
+				ifa6 = (struct in6_ifaddr *)ifa;
+				ifa_flags = ifa6->ia6_flags;
+				break;
+#endif
+			default:
+				ifa_flags = 0;
+				break;
+			}
+			sctp_ifa = sctp_add_addr_to_vrf(vrfid,
+			                                (void *)ifn,
+			                                ifn->if_index,
+			                                ifn->if_type,
+			                                ifn->if_xname,
+			                                (void *)ifa,
+			                                ifa->ifa_addr,
+			                                ifa_flags,
+			                                0);
+			if (sctp_ifa) {
+				sctp_ifa->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
+			}
+		}
+	}
+	NET_EPOCH_EXIT(et);
+	IFNET_RUNLOCK();
+}
+#endif
+
+void
+sctp_init_vrf_list(int vrfid)
+{
+	if (vrfid > SCTP_MAX_VRF_ID)
+		/* can't do that */
+		return;
+
+	/* Don't care about return here */
+	(void)sctp_allocate_vrf(vrfid);
+
+	/* Now we need to build all the ifn's
+	 * for this vrf and there addresses
+	 */
+	sctp_init_ifns_for_vrf(vrfid);
+}
+
+void
+sctp_addr_change(struct ifaddr *ifa, int cmd)
+{
+#if defined(__Userspace__)
+        return;
+#else
+	uint32_t ifa_flags = 0;
+
+	if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
+		return;
+	}
+	/* BSD only has one VRF, if this changes
+	 * we will need to hook in the right
+	 * things here to get the id to pass to
+	 * the address management routine.
+	 */
+	if (SCTP_BASE_VAR(first_time) == 0) {
+		/* Special test to see if my ::1 will showup with this */
+		SCTP_BASE_VAR(first_time) = 1;
+		sctp_init_ifns_for_vrf(SCTP_DEFAULT_VRFID);
+	}
+
+	if ((cmd != RTM_ADD) && (cmd != RTM_DELETE)) {
+		/* don't know what to do with this */
+		return;
+	}
+
+	if (ifa->ifa_addr == NULL) {
+		return;
+	}
+	if (sctp_is_desired_interface_type(ifa->ifa_ifp) == 0) {
+		/* non desired type */
+		return;
+	}
+	switch (ifa->ifa_addr->sa_family) {
+#ifdef INET
+	case AF_INET:
+		if (((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr == 0) {
+			return;
+		}
+		break;
+#endif
+#ifdef INET6
+	case AF_INET6:
+		ifa_flags = ((struct in6_ifaddr *)ifa)->ia6_flags;
+		if (IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr)) {
+			/* skip unspecified addresses */
+			return;
+		}
+		break;
+#endif
+	default:
+		/* non inet/inet6 skip */
+		return;
+	}
+	if (cmd == RTM_ADD) {
+		(void)sctp_add_addr_to_vrf(SCTP_DEFAULT_VRFID, (void *)ifa->ifa_ifp,
+#if defined(__APPLE__) && !defined(__Userspace__)
+		                           ifnet_index(ifa->ifa_ifp), ifnet_type(ifa->ifa_ifp), ifnet_name(ifa->ifa_ifp),
+#else
+		                           ifa->ifa_ifp->if_index, ifa->ifa_ifp->if_type, ifa->ifa_ifp->if_xname,
+#endif
+		                           (void *)ifa, ifa->ifa_addr, ifa_flags, 1);
+	} else {
+		sctp_del_addr_from_vrf(SCTP_DEFAULT_VRFID, ifa->ifa_addr,
+#if defined(__APPLE__) && !defined(__Userspace__)
+		                       ifnet_index(ifa->ifa_ifp),
+		                       ifnet_name(ifa->ifa_ifp));
+#else
+		                       ifa->ifa_ifp->if_index,
+		                       ifa->ifa_ifp->if_xname);
+#endif
+
+		/* We don't bump refcount here so when it completes
+		 * the final delete will happen.
+		 */
+	}
+#endif
+}
+
+#if defined(__FreeBSD__) && !defined(__Userspace__)
+void
+sctp_addr_change_event_handler(void *arg __unused, struct ifaddr *ifa, int cmd) {
+	sctp_addr_change(ifa, cmd);
+}
+#endif
+#if defined(__APPLE__) && !defined(__Userspace__)
+void
+sctp_add_or_del_interfaces(int (*pred)(struct ifnet *), int add)
+{
+	struct ifnet **ifnetlist;
+	struct ifaddr **ifaddrlist;
+	uint32_t i, j, count;
+
+	if (ifnet_list_get(IFNET_FAMILY_ANY, &ifnetlist, &count) != 0) {
+		return;
+	}
+	for (i = 0; i < count; i++) {
+		if (!(*pred)(ifnetlist[i])) {
+			continue;
+		}
+		if (ifnet_get_address_list(ifnetlist[i], &ifaddrlist) != 0) {
+			continue;
+		}
+		for (j = 0; ifaddrlist[j] != NULL; j++) {
+			sctp_addr_change(ifaddrlist[j], add ? RTM_ADD : RTM_DELETE);
+		}
+		ifnet_free_address_list(ifaddrlist);
+	}
+	ifnet_list_free(ifnetlist);
+	return;
+}
+#endif
+
+struct mbuf *
+sctp_get_mbuf_for_msg(unsigned int space_needed, int want_header,
+		      int how, int allonebuf, int type)
+{
+	struct mbuf *m = NULL;
+#if defined(__FreeBSD__) || defined(__Userspace__)
+#if defined(__Userspace__)
+	m = m_getm2(NULL, space_needed, how, type, want_header ? M_PKTHDR : 0, allonebuf);
+#else
+	m = m_getm2(NULL, space_needed, how, type, want_header ? M_PKTHDR : 0);
+#endif
+	if (m == NULL) {
+		/* bad, no memory */
+		return (m);
+	}
+#if !defined(__Userspace__)
+	if (allonebuf) {
+		if (SCTP_BUF_SIZE(m) < space_needed) {
+			m_freem(m);
+			return (NULL);
+		}
+		KASSERT(SCTP_BUF_NEXT(m) == NULL, ("%s: no chain allowed", __func__));
+	}
+#endif
+#ifdef SCTP_MBUF_LOGGING
+	if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
+		sctp_log_mb(m, SCTP_MBUF_IALLOC);
+	}
+#endif
+#else
+	int mbuf_threshold;
+	unsigned int size;
+
+	if (want_header) {
+		MGETHDR(m, how, type);
+		size = MHLEN;
+	} else {
+		MGET(m, how, type);
+		size = MLEN;
+	}
+	if (m == NULL) {
+		return (NULL);
+	}
+	if (allonebuf == 0) {
+		mbuf_threshold = SCTP_BASE_SYSCTL(sctp_mbuf_threshold_count);
+	} else {
+		mbuf_threshold = 1;
+	}
+
+	if (space_needed > (unsigned int)(((mbuf_threshold - 1) * MLEN) + MHLEN)) {
+		MCLGET(m, how);
+		if (m == NULL) {
+			return (NULL);
+		}
+		if (SCTP_BUF_IS_EXTENDED(m) == 0) {
+			sctp_m_freem(m);
+			return (NULL);
+		}
+		size = SCTP_BUF_EXTEND_SIZE(m);
+	}
+	if (allonebuf != 0 && size < space_needed) {
+		m_freem(m);
+		return (NULL);
+	}
+	SCTP_BUF_LEN(m) = 0;
+	SCTP_BUF_NEXT(m) = SCTP_BUF_NEXT_PKT(m) = NULL;
+#ifdef SCTP_MBUF_LOGGING
+	if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
+		sctp_log_mb(m, SCTP_MBUF_IALLOC);
+	}
+#endif
+#endif
+	return (m);
+}
+
+#ifdef SCTP_PACKET_LOGGING
+void
+sctp_packet_log(struct mbuf *m)
+{
+	int *lenat, thisone;
+	void *copyto;
+	uint32_t *tick_tock;
+	int length;
+	int total_len;
+	int grabbed_lock = 0;
+	int value, newval, thisend, thisbegin;
+	/*
+	 * Buffer layout.
+	 * -sizeof this entry (total_len)
+	 * -previous end      (value)
+	 * -ticks of log      (ticks)
+	 * o -ip packet
+	 * o -as logged
+	 * - where this started (thisbegin)
+	 * x <--end points here
+	 */
+	length = SCTP_HEADER_LEN(m);
+	total_len = SCTP_SIZE32((length + (4 * sizeof(int))));
+	/* Log a packet to the buffer. */
+	if (total_len> SCTP_PACKET_LOG_SIZE) {
+		/* Can't log this packet I have not a buffer big enough */
+		return;
+	}
+	if (length < (int)(SCTP_MIN_V4_OVERHEAD + sizeof(struct sctp_cookie_ack_chunk))) {
+		return;
+	}
+	atomic_add_int(&SCTP_BASE_VAR(packet_log_writers), 1);
+ try_again:
+	if (SCTP_BASE_VAR(packet_log_writers) > SCTP_PKTLOG_WRITERS_NEED_LOCK) {
+		SCTP_IP_PKTLOG_LOCK();
+		grabbed_lock = 1;
+	again_locked:
+		value = SCTP_BASE_VAR(packet_log_end);
+		newval = SCTP_BASE_VAR(packet_log_end) + total_len;
+		if (newval >= SCTP_PACKET_LOG_SIZE) {
+			/* we wrapped */
+			thisbegin = 0;
+			thisend = total_len;
+		} else {
+			thisbegin = SCTP_BASE_VAR(packet_log_end);
+			thisend = newval;
+		}
+		if (!(atomic_cmpset_int(&SCTP_BASE_VAR(packet_log_end), value, thisend))) {
+			goto again_locked;
+		}
+	} else {
+		value = SCTP_BASE_VAR(packet_log_end);
+		newval = SCTP_BASE_VAR(packet_log_end) + total_len;
+		if (newval >= SCTP_PACKET_LOG_SIZE) {
+			/* we wrapped */
+			thisbegin = 0;
+			thisend = total_len;
+		} else {
+			thisbegin = SCTP_BASE_VAR(packet_log_end);
+			thisend = newval;
+		}
+		if (!(atomic_cmpset_int(&SCTP_BASE_VAR(packet_log_end), value, thisend))) {
+			goto try_again;
+		}
+	}
+	/* Sanity check */
+	if (thisend >= SCTP_PACKET_LOG_SIZE) {
+		SCTP_PRINTF("Insanity stops a log thisbegin:%d thisend:%d writers:%d lock:%d end:%d\n",
+		            thisbegin,
+		            thisend,
+		            SCTP_BASE_VAR(packet_log_writers),
+		            grabbed_lock,
+		            SCTP_BASE_VAR(packet_log_end));
+		SCTP_BASE_VAR(packet_log_end) = 0;
+		goto no_log;
+	}
+	lenat = (int *)&SCTP_BASE_VAR(packet_log_buffer)[thisbegin];
+	*lenat = total_len;
+	lenat++;
+	*lenat = value;
+	lenat++;
+	tick_tock = (uint32_t *)lenat;
+	lenat++;
+	*tick_tock = sctp_get_tick_count();
+	copyto = (void *)lenat;
+	thisone = thisend - sizeof(int);
+	lenat = (int *)&SCTP_BASE_VAR(packet_log_buffer)[thisone];
+	*lenat = thisbegin;
+	if (grabbed_lock) {
+		SCTP_IP_PKTLOG_UNLOCK();
+		grabbed_lock = 0;
+	}
+	m_copydata(m, 0, length, (caddr_t)copyto);
+ no_log:
+	if (grabbed_lock) {
+		SCTP_IP_PKTLOG_UNLOCK();
+	}
+	atomic_subtract_int(&SCTP_BASE_VAR(packet_log_writers), 1);
+}
+
+int
+sctp_copy_out_packet_log(uint8_t *target, int length)
+{
+	/* We wind through the packet log starting at
+	 * start copying up to length bytes out.
+	 * We return the number of bytes copied.
+	 */
+	int this_copy;
+	int *lenat;
+	int did_delay = 0;
+
+	if (length < (int)(2 * sizeof(int))) {
+		/* not enough room */
+		return (0);
+	}
+	if (SCTP_PKTLOG_WRITERS_NEED_LOCK) {
+		atomic_add_int(&SCTP_BASE_VAR(packet_log_writers), SCTP_PKTLOG_WRITERS_NEED_LOCK);
+	again:
+		if ((did_delay == 0) && (SCTP_BASE_VAR(packet_log_writers) != SCTP_PKTLOG_WRITERS_NEED_LOCK)) {
+			/* we delay here for just a moment hoping the writer(s) that were
+			 * present when we entered will have left and we only have
+			 * locking ones that will contend with us for the lock. This
+			 * does not assure 100% access, but its good enough for
+			 * a logging facility like this.
+			 */
+			did_delay = 1;
+			DELAY(10);
+			goto again;
+		}
+	}
+	SCTP_IP_PKTLOG_LOCK();
+	lenat = (int *)target;
+	*lenat = SCTP_BASE_VAR(packet_log_end);
+	lenat++;
+	this_copy = min((length - sizeof(int)), SCTP_PACKET_LOG_SIZE);
+	memcpy((void *)lenat, (void *)SCTP_BASE_VAR(packet_log_buffer), this_copy);
+	if (SCTP_PKTLOG_WRITERS_NEED_LOCK) {
+		atomic_subtract_int(&SCTP_BASE_VAR(packet_log_writers),
+		                    SCTP_PKTLOG_WRITERS_NEED_LOCK);
+	}
+	SCTP_IP_PKTLOG_UNLOCK();
+	return (this_copy + sizeof(int));
+}
+
+#endif