152 lines
6.2 KiB
C
152 lines
6.2 KiB
C
/*
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* Copyright (c) 2011-2020 Apple Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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#ifndef _NET_IF_LLREACH_H_
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#define _NET_IF_LLREACH_H_
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#ifdef PRIVATE
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <sys/types.h>
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/*
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* Per-interface link-layer reachability information (private).
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*/
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#define IF_LLREACHINFO_ADDRLEN 64 /* max ll addr len */
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#define IF_LLREACHINFO_RESERVED2 16 /* more reserved bits */
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struct if_llreach_info {
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u_int32_t lri_refcnt; /* reference count */
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u_int32_t lri_ifindex; /* interface index */
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u_int64_t lri_expire; /* expiration (calendar) time */
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u_int32_t lri_probes; /* total # of probes */
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u_int16_t lri_reserved; /* for future use */
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u_int16_t lri_proto; /* ll proto */
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u_int8_t lri_addr[IF_LLREACHINFO_ADDRLEN]; /* ll addr */
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int32_t lri_rssi; /* received signal strength */
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int32_t lri_lqm; /* link quality metric */
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int32_t lri_npm; /* node proximity metric */
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u_int8_t lri_reserved2[IF_LLREACHINFO_RESERVED2];
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};
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#ifdef XNU_KERNEL_PRIVATE
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#include <sys/tree.h>
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#include <kern/locks.h>
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#include <net/ethernet.h>
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#include <netinet/in.h>
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#include <netinet6/in6_var.h>
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#include <netinet6/nd6.h>
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/*
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* Per-interface link-layer reachability. (Currently only for ARP/NDP/Ethernet.)
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*/
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#define IF_LLREACH_MAXLEN ETHER_ADDR_LEN
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struct if_llreach {
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decl_lck_mtx_data(, lr_lock);
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RB_ENTRY(if_llreach) lr_link; /* RB tree links */
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struct ifnet *lr_ifp; /* back pointer to ifnet */
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u_int32_t lr_refcnt; /* reference count */
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u_int32_t lr_reqcnt; /* RB tree request count */
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u_int32_t lr_debug; /* see ifa_debug flags */
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u_int32_t lr_probes; /* number of probes so far */
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u_int64_t lr_basecal; /* base calendar time */
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u_int64_t lr_baseup; /* base uptime */
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u_int64_t lr_lastrcvd; /* last-heard-of timestamp */
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u_int32_t lr_basereachable; /* baseline time */
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u_int32_t lr_reachable; /* reachable time */
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struct lr_key_s {
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u_int16_t proto; /* ll proto */
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u_int8_t addr[IF_LLREACH_MAXLEN]; /* ll addr */
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} lr_key;
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int32_t lr_rssi; /* received signal strength */
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int32_t lr_lqm; /* link quality metric */
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int32_t lr_npm; /* node proximity metric */
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};
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RB_PROTOTYPE_SC_PREV(__private_extern__, ll_reach_tree, if_llreach,
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ls_link, ifllr_cmp);
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#define IFLR_LOCK_ASSERT_HELD(_iflr) \
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LCK_MTX_ASSERT(&(_iflr)->lr_lock, LCK_MTX_ASSERT_OWNED)
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#define IFLR_LOCK_ASSERT_NOTHELD(_iflr) \
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LCK_MTX_ASSERT(&(_iflr)->lr_lock, LCK_MTX_ASSERT_NOTOWNED)
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#define IFLR_LOCK(_iflr) \
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lck_mtx_lock(&(_iflr)->lr_lock)
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#define IFLR_LOCK_SPIN(_iflr) \
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lck_mtx_lock_spin(&(_iflr)->lr_lock)
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#define IFLR_CONVERT_LOCK(_iflr) do { \
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IFLR_LOCK_ASSERT_HELD(_iflr); \
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lck_mtx_convert_spin(&(_iflr)->lr_lock); \
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} while (0)
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#define IFLR_UNLOCK(_iflr) \
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lck_mtx_unlock(&(_iflr)->lr_lock)
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#define IFLR_ADDREF(_iflr) \
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iflr_addref(_iflr, 0)
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#define IFLR_ADDREF_LOCKED(_iflr) \
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iflr_addref(_iflr, 1)
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#define IFLR_REMREF(_iflr) \
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iflr_remref(_iflr)
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struct ifnet_llreach_info; /* forward declaration */
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extern void ifnet_llreach_ifattach(struct ifnet *, boolean_t);
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extern void ifnet_llreach_ifdetach(struct ifnet *);
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extern struct if_llreach *ifnet_llreach_alloc(struct ifnet *, u_int16_t, void *,
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unsigned int, u_int32_t);
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extern void ifnet_llreach_free(struct if_llreach *);
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extern int ifnet_llreach_reachable(struct if_llreach *);
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extern int ifnet_llreach_reachable_delta(struct if_llreach *, u_int64_t);
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extern void ifnet_llreach_set_reachable(struct ifnet *, u_int16_t, void *,
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unsigned int);
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extern u_int64_t ifnet_llreach_up2calexp(struct if_llreach *, u_int64_t);
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extern u_int64_t ifnet_llreach_up2upexp(struct if_llreach *, u_int64_t);
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extern int ifnet_llreach_get_defrouter(struct ifnet *, sa_family_t,
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struct ifnet_llreach_info *);
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extern void ifnet_lr2ri(struct if_llreach *, struct rt_reach_info *);
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extern void ifnet_lr2iflri(struct if_llreach *, struct ifnet_llreach_info *);
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extern void ifnet_lr2lri(struct if_llreach *, struct if_llreach_info *);
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extern void iflr_addref(struct if_llreach *, int);
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extern void iflr_remref(struct if_llreach *);
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#endif /* XNU_KERNEL_PRIVATE */
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#ifdef __cplusplus
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}
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#endif
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#endif /* PRIVATE */
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#endif /* !_NET_IF_LLREACH_H_ */
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