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Thomas Graf9067c722006-08-07 17:57:44 -07001#ifndef __LINUX_NEIGHBOUR_H
2#define __LINUX_NEIGHBOUR_H
3
Jaswinder Singh Rajputee79a642009-01-30 21:58:19 +05304#include <linux/types.h>
Thomas Graf9067c722006-08-07 17:57:44 -07005#include <linux/netlink.h>
6
7struct ndmsg
8{
9 __u8 ndm_family;
10 __u8 ndm_pad1;
11 __u16 ndm_pad2;
12 __s32 ndm_ifindex;
13 __u16 ndm_state;
14 __u8 ndm_flags;
15 __u8 ndm_type;
16};
17
18enum
19{
20 NDA_UNSPEC,
21 NDA_DST,
22 NDA_LLADDR,
23 NDA_CACHEINFO,
24 NDA_PROBES,
25 __NDA_MAX
26};
27
28#define NDA_MAX (__NDA_MAX - 1)
29
30/*
31 * Neighbor Cache Entry Flags
32 */
33
34#define NTF_PROXY 0x08 /* == ATF_PUBL */
35#define NTF_ROUTER 0x80
36
37/*
38 * Neighbor Cache Entry States.
39 */
40
41#define NUD_INCOMPLETE 0x01
42#define NUD_REACHABLE 0x02
43#define NUD_STALE 0x04
44#define NUD_DELAY 0x08
45#define NUD_PROBE 0x10
46#define NUD_FAILED 0x20
47
48/* Dummy states */
49#define NUD_NOARP 0x40
50#define NUD_PERMANENT 0x80
51#define NUD_NONE 0x00
52
53/* NUD_NOARP & NUD_PERMANENT are pseudostates, they never change
54 and make no address resolution or NUD.
55 NUD_PERMANENT is also cannot be deleted by garbage collectors.
56 */
57
58struct nda_cacheinfo
59{
60 __u32 ndm_confirmed;
61 __u32 ndm_used;
62 __u32 ndm_updated;
63 __u32 ndm_refcnt;
64};
65
Thomas Grafb63bbc52006-08-07 18:00:57 -070066/*****************************************************************
67 * Neighbour tables specific messages.
68 *
69 * To retrieve the neighbour tables send RTM_GETNEIGHTBL with the
70 * NLM_F_DUMP flag set. Every neighbour table configuration is
71 * spread over multiple messages to avoid running into message
72 * size limits on systems with many interfaces. The first message
73 * in the sequence transports all not device specific data such as
74 * statistics, configuration, and the default parameter set.
75 * This message is followed by 0..n messages carrying device
76 * specific parameter sets.
77 * Although the ordering should be sufficient, NDTA_NAME can be
78 * used to identify sequences. The initial message can be identified
79 * by checking for NDTA_CONFIG. The device specific messages do
80 * not contain this TLV but have NDTPA_IFINDEX set to the
81 * corresponding interface index.
82 *
83 * To change neighbour table attributes, send RTM_SETNEIGHTBL
84 * with NDTA_NAME set. Changeable attribute include NDTA_THRESH[1-3],
85 * NDTA_GC_INTERVAL, and all TLVs in NDTA_PARMS unless marked
86 * otherwise. Device specific parameter sets can be changed by
87 * setting NDTPA_IFINDEX to the interface index of the corresponding
88 * device.
89 ****/
90
91struct ndt_stats
92{
93 __u64 ndts_allocs;
94 __u64 ndts_destroys;
95 __u64 ndts_hash_grows;
96 __u64 ndts_res_failed;
97 __u64 ndts_lookups;
98 __u64 ndts_hits;
99 __u64 ndts_rcv_probes_mcast;
100 __u64 ndts_rcv_probes_ucast;
101 __u64 ndts_periodic_gc_runs;
102 __u64 ndts_forced_gc_runs;
103};
104
105enum {
106 NDTPA_UNSPEC,
107 NDTPA_IFINDEX, /* u32, unchangeable */
108 NDTPA_REFCNT, /* u32, read-only */
109 NDTPA_REACHABLE_TIME, /* u64, read-only, msecs */
110 NDTPA_BASE_REACHABLE_TIME, /* u64, msecs */
111 NDTPA_RETRANS_TIME, /* u64, msecs */
112 NDTPA_GC_STALETIME, /* u64, msecs */
113 NDTPA_DELAY_PROBE_TIME, /* u64, msecs */
114 NDTPA_QUEUE_LEN, /* u32 */
115 NDTPA_APP_PROBES, /* u32 */
116 NDTPA_UCAST_PROBES, /* u32 */
117 NDTPA_MCAST_PROBES, /* u32 */
118 NDTPA_ANYCAST_DELAY, /* u64, msecs */
119 NDTPA_PROXY_DELAY, /* u64, msecs */
120 NDTPA_PROXY_QLEN, /* u32 */
121 NDTPA_LOCKTIME, /* u64, msecs */
122 __NDTPA_MAX
123};
124#define NDTPA_MAX (__NDTPA_MAX - 1)
125
126struct ndtmsg
127{
128 __u8 ndtm_family;
129 __u8 ndtm_pad1;
130 __u16 ndtm_pad2;
131};
132
133struct ndt_config
134{
135 __u16 ndtc_key_len;
136 __u16 ndtc_entry_size;
137 __u32 ndtc_entries;
138 __u32 ndtc_last_flush; /* delta to now in msecs */
139 __u32 ndtc_last_rand; /* delta to now in msecs */
140 __u32 ndtc_hash_rnd;
141 __u32 ndtc_hash_mask;
142 __u32 ndtc_hash_chain_gc;
143 __u32 ndtc_proxy_qlen;
144};
145
146enum {
147 NDTA_UNSPEC,
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 */
156 __NDTA_MAX
157};
158#define NDTA_MAX (__NDTA_MAX - 1)
159
Thomas Graf9067c722006-08-07 17:57:44 -0700160#endif