1 #ifndef __LINUX_NEIGHBOUR_H
2 #define __LINUX_NEIGHBOUR_H
4 #include <linux/types.h>
5 #include <linux/netlink.h>
27 #define NDA_MAX (__NDA_MAX - 1)
30 * Neighbor Cache Entry Flags
34 #define NTF_PROXY 0x08 /* == ATF_PUBL */
35 #define NTF_ROUTER 0x80
38 #define NTF_MASTER 0x04
41 * Neighbor Cache Entry States.
44 #define NUD_INCOMPLETE 0x01
45 #define NUD_REACHABLE 0x02
46 #define NUD_STALE 0x04
47 #define NUD_DELAY 0x08
48 #define NUD_PROBE 0x10
49 #define NUD_FAILED 0x20
52 #define NUD_NOARP 0x40
53 #define NUD_PERMANENT 0x80
56 /* NUD_NOARP & NUD_PERMANENT are pseudostates, they never change
57 and make no address resolution or NUD.
58 NUD_PERMANENT is also cannot be deleted by garbage collectors.
61 struct nda_cacheinfo {
68 /*****************************************************************
69 * Neighbour tables specific messages.
71 * To retrieve the neighbour tables send RTM_GETNEIGHTBL with the
72 * NLM_F_DUMP flag set. Every neighbour table configuration is
73 * spread over multiple messages to avoid running into message
74 * size limits on systems with many interfaces. The first message
75 * in the sequence transports all not device specific data such as
76 * statistics, configuration, and the default parameter set.
77 * This message is followed by 0..n messages carrying device
78 * specific parameter sets.
79 * Although the ordering should be sufficient, NDTA_NAME can be
80 * used to identify sequences. The initial message can be identified
81 * by checking for NDTA_CONFIG. The device specific messages do
82 * not contain this TLV but have NDTPA_IFINDEX set to the
83 * corresponding interface index.
85 * To change neighbour table attributes, send RTM_SETNEIGHTBL
86 * with NDTA_NAME set. Changeable attribute include NDTA_THRESH[1-3],
87 * NDTA_GC_INTERVAL, and all TLVs in NDTA_PARMS unless marked
88 * otherwise. Device specific parameter sets can be changed by
89 * setting NDTPA_IFINDEX to the interface index of the corresponding
96 __u64 ndts_hash_grows;
97 __u64 ndts_res_failed;
100 __u64 ndts_rcv_probes_mcast;
101 __u64 ndts_rcv_probes_ucast;
102 __u64 ndts_periodic_gc_runs;
103 __u64 ndts_forced_gc_runs;
108 NDTPA_IFINDEX, /* u32, unchangeable */
109 NDTPA_REFCNT, /* u32, read-only */
110 NDTPA_REACHABLE_TIME, /* u64, read-only, msecs */
111 NDTPA_BASE_REACHABLE_TIME, /* u64, msecs */
112 NDTPA_RETRANS_TIME, /* u64, msecs */
113 NDTPA_GC_STALETIME, /* u64, msecs */
114 NDTPA_DELAY_PROBE_TIME, /* u64, msecs */
115 NDTPA_QUEUE_LEN, /* u32 */
116 NDTPA_APP_PROBES, /* u32 */
117 NDTPA_UCAST_PROBES, /* u32 */
118 NDTPA_MCAST_PROBES, /* u32 */
119 NDTPA_ANYCAST_DELAY, /* u64, msecs */
120 NDTPA_PROXY_DELAY, /* u64, msecs */
121 NDTPA_PROXY_QLEN, /* u32 */
122 NDTPA_LOCKTIME, /* u64, msecs */
123 NDTPA_QUEUE_LENBYTES, /* u32 */
126 #define NDTPA_MAX (__NDTPA_MAX - 1)
136 __u16 ndtc_entry_size;
138 __u32 ndtc_last_flush; /* delta to now in msecs */
139 __u32 ndtc_last_rand; /* delta to now in msecs */
141 __u32 ndtc_hash_mask;
142 __u32 ndtc_hash_chain_gc;
143 __u32 ndtc_proxy_qlen;
148 NDTA_NAME, /* char *, unchangeable */
149 NDTA_THRESH1, /* u32 */
150 NDTA_THRESH2, /* u32 */
151 NDTA_THRESH3, /* u32 */
152 NDTA_CONFIG, /* struct ndt_config, read-only */
153 NDTA_PARMS, /* nested TLV NDTPA_* */
154 NDTA_STATS, /* struct ndt_stats, read-only */
155 NDTA_GC_INTERVAL, /* u64, msecs */
158 #define NDTA_MAX (__NDTA_MAX - 1)