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_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);
+}