--- /dev/null
+/*
+ * Copyright (c) 2011 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+
+#ifndef _NET_IF_LLREACH_H_
+#define _NET_IF_LLREACH_H_
+
+#ifdef PRIVATE
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <sys/types.h>
+
+/*
+ * Per-interface link-layer reachability information (private).
+ */
+#define IF_LLREACHINFO_ADDRLEN 64 /* max ll addr len */
+
+struct if_llreach_info {
+ u_int32_t lri_refcnt; /* reference count */
+ u_int32_t lri_ifindex; /* interface index */
+ u_int64_t lri_expire; /* expiration (calendar) time */
+ u_int32_t lri_probes; /* total # of probes */
+ u_int16_t lri_reserved; /* for future use */
+ u_int16_t lri_proto; /* ll proto */
+ u_int8_t lri_addr[IF_LLREACHINFO_ADDRLEN]; /* ll addr */
+};
+
+#ifdef XNU_KERNEL_PRIVATE
+#include <sys/tree.h>
+#include <kern/lock.h>
+#include <net/ethernet.h>
+#include <netinet/in.h>
+#if INET6
+#include <netinet6/in6_var.h>
+#include <netinet6/nd6.h>
+#endif /* INET6 */
+
+/*
+ * Link-layer reachability is based off node constants in RFC4861.
+ */
+#if INET6
+#define LL_BASE_REACHABLE REACHABLE_TIME
+#else
+#define LL_BASE_REACHABLE 30000 /* msec */
+#endif /* !INET6 */
+
+/*
+ * Per-interface link-layer reachability. (Currently only for ARP/Ethernet.)
+ */
+#define IF_LLREACH_MAXLEN ETHER_ADDR_LEN
+
+struct if_llreach {
+ decl_lck_mtx_data(, lr_lock);
+ RB_ENTRY(if_llreach) lr_link; /* RB tree links */
+ struct ifnet *lr_ifp; /* back pointer to ifnet */
+ u_int32_t lr_refcnt; /* reference count */
+ u_int32_t lr_reqcnt; /* RB tree request count */
+ u_int32_t lr_debug; /* see ifa_debug flags */
+ u_int32_t lr_probes; /* number of probes so far */
+ u_int64_t lr_basecal; /* base calendar time */
+ u_int64_t lr_baseup; /* base uptime */
+ u_int64_t lr_lastrcvd; /* last-heard-of timestamp */
+ u_int32_t lr_basereachable; /* baseline time */
+ u_int32_t lr_reachable; /* reachable time */
+ struct lr_key_s {
+ u_int16_t proto; /* ll proto */
+ u_int8_t addr[IF_LLREACH_MAXLEN]; /* ll addr */
+ } lr_key;
+};
+
+RB_PROTOTYPE_SC_PREV(__private_extern__, ll_reach_tree, if_llreach,
+ ls_link, ifllr_cmp);
+
+#define IFLR_LOCK_ASSERT_HELD(_iflr) \
+ lck_mtx_assert(&(_iflr)->lr_lock, LCK_MTX_ASSERT_OWNED)
+
+#define IFLR_LOCK_ASSERT_NOTHELD(_iflr) \
+ lck_mtx_assert(&(_iflr)->lr_lock, LCK_MTX_ASSERT_NOTOWNED)
+
+#define IFLR_LOCK(_iflr) \
+ lck_mtx_lock(&(_iflr)->lr_lock)
+
+#define IFLR_LOCK_SPIN(_iflr) \
+ lck_mtx_lock_spin(&(_iflr)->lr_lock)
+
+#define IFLR_CONVERT_LOCK(_iflr) do { \
+ IFLR_LOCK_ASSERT_HELD(_iflr); \
+ lck_mtx_convert_spin(&(_iflr)->lr_lock); \
+} while (0)
+
+#define IFLR_UNLOCK(_iflr) \
+ lck_mtx_unlock(&(_iflr)->lr_lock)
+
+#define IFLR_ADDREF(_iflr) \
+ iflr_addref(_iflr, 0)
+
+#define IFLR_ADDREF_LOCKED(_iflr) \
+ iflr_addref(_iflr, 1)
+
+#define IFLR_REMREF(_iflr) \
+ iflr_remref(_iflr)
+
+extern void ifnet_llreach_init(void);
+extern void ifnet_llreach_ifattach(struct ifnet *, boolean_t);
+extern void ifnet_llreach_ifdetach(struct ifnet *);
+extern struct if_llreach *ifnet_llreach_alloc(struct ifnet *, u_int16_t, void *,
+ unsigned int, u_int64_t);
+extern void ifnet_llreach_free(struct if_llreach *);
+extern int ifnet_llreach_reachable(struct if_llreach *);
+extern int ifnet_llreach_reachable_delta(struct if_llreach *, u_int64_t);
+extern void ifnet_llreach_set_reachable(struct ifnet *, u_int16_t, void *,
+ unsigned int);
+extern u_int64_t ifnet_llreach_up2cal(struct if_llreach *, u_int64_t);
+extern void ifnet_lr2ri(struct if_llreach *, struct rt_reach_info *);
+extern void ifnet_lr2lri(struct if_llreach *, struct if_llreach_info *);
+extern void iflr_addref(struct if_llreach *, int);
+extern void iflr_remref(struct if_llreach *);
+#endif /* XNU_KERNEL_PRIVATE */
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* PRIVATE */
+#endif /* !_NET_IF_LLREACH_H_ */
projects / apple / xnu.git / blobdiff