1 #ifndef __LINUX_NEIGHBOUR_H
2 #define __LINUX_NEIGHBOUR_H
4 #include <linux/types.h>
5 #include <linux/netlink.h>
26 #define NDA_MAX (__NDA_MAX - 1)
29 * Neighbor Cache Entry Flags
33 #define NTF_PROXY 0x08 /* == ATF_PUBL */
34 #define NTF_ROUTER 0x80
37 * Neighbor Cache Entry States.
40 #define NUD_INCOMPLETE 0x01
41 #define NUD_REACHABLE 0x02
42 #define NUD_STALE 0x04
43 #define NUD_DELAY 0x08
44 #define NUD_PROBE 0x10
45 #define NUD_FAILED 0x20
48 #define NUD_NOARP 0x40
49 #define NUD_PERMANENT 0x80
52 /* NUD_NOARP & NUD_PERMANENT are pseudostates, they never change
53 and make no address resolution or NUD.
54 NUD_PERMANENT is also cannot be deleted by garbage collectors.
57 struct nda_cacheinfo {
64 /*****************************************************************
65 * Neighbour tables specific messages.
67 * To retrieve the neighbour tables send RTM_GETNEIGHTBL with the
68 * NLM_F_DUMP flag set. Every neighbour table configuration is
69 * spread over multiple messages to avoid running into message
70 * size limits on systems with many interfaces. The first message
71 * in the sequence transports all not device specific data such as
72 * statistics, configuration, and the default parameter set.
73 * This message is followed by 0..n messages carrying device
74 * specific parameter sets.
75 * Although the ordering should be sufficient, NDTA_NAME can be
76 * used to identify sequences. The initial message can be identified
77 * by checking for NDTA_CONFIG. The device specific messages do
78 * not contain this TLV but have NDTPA_IFINDEX set to the
79 * corresponding interface index.
81 * To change neighbour table attributes, send RTM_SETNEIGHTBL
82 * with NDTA_NAME set. Changeable attribute include NDTA_THRESH[1-3],
83 * NDTA_GC_INTERVAL, and all TLVs in NDTA_PARMS unless marked
84 * otherwise. Device specific parameter sets can be changed by
85 * setting NDTPA_IFINDEX to the interface index of the corresponding
92 __u64 ndts_hash_grows;
93 __u64 ndts_res_failed;
96 __u64 ndts_rcv_probes_mcast;
97 __u64 ndts_rcv_probes_ucast;
98 __u64 ndts_periodic_gc_runs;
99 __u64 ndts_forced_gc_runs;
104 NDTPA_IFINDEX, /* u32, unchangeable */
105 NDTPA_REFCNT, /* u32, read-only */
106 NDTPA_REACHABLE_TIME, /* u64, read-only, msecs */
107 NDTPA_BASE_REACHABLE_TIME, /* u64, msecs */
108 NDTPA_RETRANS_TIME, /* u64, msecs */
109 NDTPA_GC_STALETIME, /* u64, msecs */
110 NDTPA_DELAY_PROBE_TIME, /* u64, msecs */
111 NDTPA_QUEUE_LEN, /* u32 */
112 NDTPA_APP_PROBES, /* u32 */
113 NDTPA_UCAST_PROBES, /* u32 */
114 NDTPA_MCAST_PROBES, /* u32 */
115 NDTPA_ANYCAST_DELAY, /* u64, msecs */
116 NDTPA_PROXY_DELAY, /* u64, msecs */
117 NDTPA_PROXY_QLEN, /* u32 */
118 NDTPA_LOCKTIME, /* u64, msecs */
119 NDTPA_QUEUE_LENBYTES, /* u32 */
122 #define NDTPA_MAX (__NDTPA_MAX - 1)
132 __u16 ndtc_entry_size;
134 __u32 ndtc_last_flush; /* delta to now in msecs */
135 __u32 ndtc_last_rand; /* delta to now in msecs */
137 __u32 ndtc_hash_mask;
138 __u32 ndtc_hash_chain_gc;
139 __u32 ndtc_proxy_qlen;
144 NDTA_NAME, /* char *, unchangeable */
145 NDTA_THRESH1, /* u32 */
146 NDTA_THRESH2, /* u32 */
147 NDTA_THRESH3, /* u32 */
148 NDTA_CONFIG, /* struct ndt_config, read-only */
149 NDTA_PARMS, /* nested TLV NDTPA_* */
150 NDTA_STATS, /* struct ndt_stats, read-only */
151 NDTA_GC_INTERVAL, /* u64, msecs */
154 #define NDTA_MAX (__NDTA_MAX - 1)