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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
Eric Dumazetd94d9fe2009-11-04 09:50:58 -08007struct ndmsg {
Thomas Graf9067c722006-08-07 17:57:44 -07008 __u8 ndm_family;
9 __u8 ndm_pad1;
10 __u16 ndm_pad2;
11 __s32 ndm_ifindex;
12 __u16 ndm_state;
13 __u8 ndm_flags;
14 __u8 ndm_type;
15};
16
Eric Dumazetd94d9fe2009-11-04 09:50:58 -080017enum {
Thomas Graf9067c722006-08-07 17:57:44 -070018 NDA_UNSPEC,
19 NDA_DST,
20 NDA_LLADDR,
21 NDA_CACHEINFO,
22 NDA_PROBES,
23 __NDA_MAX
24};
25
26#define NDA_MAX (__NDA_MAX - 1)
27
28/*
29 * Neighbor Cache Entry Flags
30 */
31
Eric Biederman0c5c2d32009-03-04 00:03:08 -080032#define NTF_USE 0x01
Thomas Graf9067c722006-08-07 17:57:44 -070033#define NTF_PROXY 0x08 /* == ATF_PUBL */
34#define NTF_ROUTER 0x80
35
36/*
37 * Neighbor Cache Entry States.
38 */
39
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
46
47/* Dummy states */
48#define NUD_NOARP 0x40
49#define NUD_PERMANENT 0x80
50#define NUD_NONE 0x00
51
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.
55 */
56
Eric Dumazetd94d9fe2009-11-04 09:50:58 -080057struct nda_cacheinfo {
Thomas Graf9067c722006-08-07 17:57:44 -070058 __u32 ndm_confirmed;
59 __u32 ndm_used;
60 __u32 ndm_updated;
61 __u32 ndm_refcnt;
62};
63
Thomas Grafb63bbc52006-08-07 18:00:57 -070064/*****************************************************************
65 * Neighbour tables specific messages.
66 *
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.
80 *
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
86 * device.
87 ****/
88
Eric Dumazetd94d9fe2009-11-04 09:50:58 -080089struct ndt_stats {
Thomas Grafb63bbc52006-08-07 18:00:57 -070090 __u64 ndts_allocs;
91 __u64 ndts_destroys;
92 __u64 ndts_hash_grows;
93 __u64 ndts_res_failed;
94 __u64 ndts_lookups;
95 __u64 ndts_hits;
96 __u64 ndts_rcv_probes_mcast;
97 __u64 ndts_rcv_probes_ucast;
98 __u64 ndts_periodic_gc_runs;
99 __u64 ndts_forced_gc_runs;
100};
101
102enum {
103 NDTPA_UNSPEC,
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_MAX
120};
121#define NDTPA_MAX (__NDTPA_MAX - 1)
122
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800123struct ndtmsg {
Thomas Grafb63bbc52006-08-07 18:00:57 -0700124 __u8 ndtm_family;
125 __u8 ndtm_pad1;
126 __u16 ndtm_pad2;
127};
128
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800129struct ndt_config {
Thomas Grafb63bbc52006-08-07 18:00:57 -0700130 __u16 ndtc_key_len;
131 __u16 ndtc_entry_size;
132 __u32 ndtc_entries;
133 __u32 ndtc_last_flush; /* delta to now in msecs */
134 __u32 ndtc_last_rand; /* delta to now in msecs */
135 __u32 ndtc_hash_rnd;
136 __u32 ndtc_hash_mask;
137 __u32 ndtc_hash_chain_gc;
138 __u32 ndtc_proxy_qlen;
139};
140
141enum {
142 NDTA_UNSPEC,
143 NDTA_NAME, /* char *, unchangeable */
144 NDTA_THRESH1, /* u32 */
145 NDTA_THRESH2, /* u32 */
146 NDTA_THRESH3, /* u32 */
147 NDTA_CONFIG, /* struct ndt_config, read-only */
148 NDTA_PARMS, /* nested TLV NDTPA_* */
149 NDTA_STATS, /* struct ndt_stats, read-only */
150 NDTA_GC_INTERVAL, /* u64, msecs */
151 __NDTA_MAX
152};
153#define NDTA_MAX (__NDTA_MAX - 1)
154
Thomas Graf9067c722006-08-07 17:57:44 -0700155#endif