Squashed 'third_party/rawrtc/usrsctp/' content from commit bd1a92db3
Change-Id: If227cd6edd3243ac26044056b7427ae5bca71ef8
git-subtree-dir: third_party/rawrtc/usrsctp
git-subtree-split: bd1a92db338ba1e57453637959a127032bb566ff
diff --git a/usrsctplib/netinet/sctp_bsd_addr.c b/usrsctplib/netinet/sctp_bsd_addr.c
new file mode 100755
index 0000000..805fdb8
--- /dev/null
+++ b/usrsctplib/netinet/sctp_bsd_addr.c
@@ -0,0 +1,1111 @@
+/*-
+ * 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.
+ */
+
+#ifdef __FreeBSD__
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: head/sys/netinet/sctp_bsd_addr.c 310590 2016-12-26 11:06:41Z tuexen $");
+#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__)
+#include <sys/unistd.h>
+#endif
+
+/* Declare all of our malloc named types */
+#ifndef __Panda__
+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");
+#endif
+
+/* Global NON-VNET structure that controls the iterator */
+struct iterator_control sctp_it_ctl;
+
+#if !defined(__FreeBSD__)
+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(__Userspace_os_Windows)
+ 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__)
+ 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__) || defined(__Userspace_os_Darwin)
+ sctp_it_ctl.ipi_iterator_wq_mtx,
+#endif
+ 0, "waiting_for_work", 0);
+#else
+#if defined(__Userspace_os_Windows)
+ 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__)
+ if (sctp_it_ctl.iterator_flags & SCTP_ITERATOR_MUST_EXIT) {
+ break;
+ }
+#endif
+ sctp_iterator_worker();
+ }
+#if !defined(__FreeBSD__)
+ /* 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(__FreeBSD__)
+#if __FreeBSD_version <= 701000
+ kthread_create(sctp_iterator_thread,
+#else
+ kproc_create(sctp_iterator_thread,
+#endif
+ (void *)NULL,
+ &sctp_it_ctl.thread_proc,
+ RFPROC,
+ SCTP_KTHREAD_PAGES,
+ SCTP_KTRHEAD_NAME);
+#elif defined(__APPLE__)
+ kernel_thread_start((thread_continue_t)sctp_iterator_thread, NULL, &sctp_it_ctl.thread_proc);
+#elif defined(__Userspace__)
+ if (sctp_userspace_thread_create(&sctp_it_ctl.thread_proc, &sctp_iterator_thread)) {
+ SCTP_PRINTF("ERROR: Creating sctp_iterator_thread failed.\n");
+ }
+#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__)
+ 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__)
+ 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__)
+int
+sctp_is_vmware_interface(struct ifnet *ifn)
+{
+ return (strncmp(ifnet_name(ifn), "vmnet", 5) == 0);
+}
+#endif
+
+#if defined(__Userspace_os_Windows)
+#ifdef MALLOC
+#undef MALLOC
+#define MALLOC(x) HeapAlloc(GetProcessHeap(), 0, (x))
+#endif
+#ifdef FREE
+#undef FREE
+#define FREE(x) HeapFree(GetProcessHeap(), 0, (x))
+#endif
+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);
+ 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;
+ }
+ }
+ }
+ }
+ 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);
+ 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;
+ }
+ }
+ }
+ }
+ 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 unspecifed 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__)
+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 unspecifed 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;
+ }
+ 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__)
+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 *ifn;
+ struct ifaddr *ifa;
+ struct sctp_ifa *sctp_ifa;
+ uint32_t ifa_flags;
+#ifdef INET6
+ struct in6_ifaddr *ifa6;
+#endif
+
+ IFNET_RLOCK();
+ TAILQ_FOREACH(ifn, &MODULE_GLOBAL(ifnet), if_link) {
+ if (sctp_is_desired_interface_type(ifn) == 0) {
+ /* non desired type */
+ continue;
+ }
+#if (__FreeBSD_version >= 803000 && __FreeBSD_version < 900000) || __FreeBSD_version > 900000
+ IF_ADDR_RLOCK(ifn);
+#else
+ IF_ADDR_LOCK(ifn);
+#endif
+ TAILQ_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 unspecifed 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;
+ }
+ }
+#if (__FreeBSD_version >= 803000 && __FreeBSD_version < 900000) || __FreeBSD_version > 900000
+ IF_ADDR_RUNLOCK(ifn);
+#else
+ IF_ADDR_UNLOCK(ifn);
+#endif
+ }
+ 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 unspecifed 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__)
+ 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__)
+ 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__)
+void
+sctp_add_or_del_interfaces(int (*pred)(struct ifnet *), int add)
+{
+ struct ifnet *ifn;
+ struct ifaddr *ifa;
+
+ IFNET_RLOCK();
+ TAILQ_FOREACH(ifn, &MODULE_GLOBAL(ifnet), if_link) {
+ if (!(*pred)(ifn)) {
+ continue;
+ }
+ TAILQ_FOREACH(ifa, &ifn->if_addrhead, ifa_link) {
+ sctp_addr_change(ifa, add ? RTM_ADD : RTM_DELETE);
+ }
+ }
+ IFNET_RUNLOCK();
+}
+#endif
+#if defined(__APPLE__)
+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(__Userspace__)
+
+ /*
+ * __Userspace__
+ * Using m_clget, which creates and mbuf and a cluster and
+ * hooks those together.
+ * TODO: This does not yet have functionality for jumbo packets.
+ *
+ */
+
+ int mbuf_threshold;
+ if (want_header) {
+ MGETHDR(m, how, type);
+ } else {
+ MGET(m, how, type);
+ }
+ if (m == NULL) {
+ return (NULL);
+ }
+ if (allonebuf == 0)
+ mbuf_threshold = SCTP_BASE_SYSCTL(sctp_mbuf_threshold_count);
+ else
+ mbuf_threshold = 1;
+
+
+ if ((int)space_needed > (((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);
+ }
+ }
+ SCTP_BUF_LEN(m) = 0;
+ SCTP_BUF_NEXT(m) = SCTP_BUF_NEXT_PKT(m) = NULL;
+
+ /* __Userspace__
+ * Check if anything need to be done to ensure logging works
+ */
+#ifdef SCTP_MBUF_LOGGING
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
+ sctp_log_mb(m, SCTP_MBUF_IALLOC);
+ }
+#endif
+#elif defined(__FreeBSD__) && __FreeBSD_version > 1100052
+ m = m_getm2(NULL, space_needed, how, type, want_header ? M_PKTHDR : 0);
+ if (m == NULL) {
+ /* bad, no memory */
+ return (m);
+ }
+ if (allonebuf) {
+ if (SCTP_BUF_SIZE(m) < space_needed) {
+ m_freem(m);
+ return (NULL);
+ }
+ }
+ if (SCTP_BUF_NEXT(m)) {
+ sctp_m_freem(SCTP_BUF_NEXT(m));
+ SCTP_BUF_NEXT(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
+#elif defined(__FreeBSD__) && __FreeBSD_version > 602000
+ m = m_getm2(NULL, space_needed, how, type, want_header ? M_PKTHDR : 0);
+ if (m == NULL) {
+ /* bad, no memory */
+ return (m);
+ }
+ if (allonebuf) {
+ int siz;
+ if (SCTP_BUF_IS_EXTENDED(m)) {
+ siz = SCTP_BUF_EXTEND_SIZE(m);
+ } else {
+ if (want_header)
+ siz = MHLEN;
+ else
+ siz = MLEN;
+ }
+ if (siz < space_needed) {
+ m_freem(m);
+ return (NULL);
+ }
+ }
+ if (SCTP_BUF_NEXT(m)) {
+ sctp_m_freem(SCTP_BUF_NEXT(m));
+ SCTP_BUF_NEXT(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
+#else
+#if defined(__FreeBSD__) && __FreeBSD_version >= 601000
+ int aloc_size;
+ int index = 0;
+#endif
+ int mbuf_threshold;
+ if (want_header) {
+ MGETHDR(m, how, type);
+ } else {
+ MGET(m, how, type);
+ }
+ if (m == NULL) {
+ return (NULL);
+ }
+ if (allonebuf == 0)
+ mbuf_threshold = SCTP_BASE_SYSCTL(sctp_mbuf_threshold_count);
+ else
+ mbuf_threshold = 1;
+
+
+ if (space_needed > (((mbuf_threshold - 1) * MLEN) + MHLEN)) {
+#if defined(__FreeBSD__) && __FreeBSD_version >= 601000
+ try_again:
+ index = 4;
+ if (space_needed <= MCLBYTES) {
+ aloc_size = MCLBYTES;
+ } else {
+ aloc_size = MJUMPAGESIZE;
+ index = 5;
+ }
+ m_cljget(m, how, aloc_size);
+ if (m == NULL) {
+ return (NULL);
+ }
+ if (SCTP_BUF_IS_EXTENDED(m) == 0) {
+ if ((aloc_size != MCLBYTES) &&
+ (allonebuf == 0)) {
+ aloc_size -= 10;
+ goto try_again;
+ }
+ sctp_m_freem(m);
+ return (NULL);
+ }
+#else
+ MCLGET(m, how);
+ if (m == NULL) {
+ return (NULL);
+ }
+ if (SCTP_BUF_IS_EXTENDED(m) == 0) {
+ sctp_m_freem(m);
+ return (NULL);
+ }
+#endif
+ }
+ 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 tocopy, this_copy;
+ int *lenat;
+ int did_delay = 0;
+
+ tocopy = length;
+ 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