1 #ifndef __LINUX_NEIGHBOUR_H
2 #define __LINUX_NEIGHBOUR_H
3
4 #include <linux/netlink.h>
5
6 struct ndmsg
7 {
8 __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
17 enum
18 {
19 NDA_UNSPEC,
20 NDA_DST,
21 NDA_LLADDR,
22 NDA_CACHEINFO,
23 NDA_PROBES,
24 __NDA_MAX
25 };
26
27 #define NDA_MAX (__NDA_MAX - 1)
28
29 /*
30 * Neighbor Cache Entry Flags
31 */
32
33 #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
57 struct nda_cacheinfo
58 {
59 __u32 ndm_confirmed;
60 __u32 ndm_used;
61 __u32 ndm_updated;
62 __u32 ndm_refcnt;
63 };
64
65 /*****************************************************************
66 * Neighbour tables specific messages.
67 *
68 * To retrieve the neighbour tables send RTM_GETNEIGHTBL with the
69 * NLM_F_DUMP flag set. Every neighbour table configuration is
70 * spread over multiple messages to avoid running into message
71 * size limits on systems with many interfaces. The first message
72 * in the sequence transports all not device specific data such as
73 * statistics, configuration, and the default parameter set.
74 * This message is followed by 0..n messages carrying device
75 * specific parameter sets.
76 * Although the ordering should be sufficient, NDTA_NAME can be
77 * used to identify sequences. The initial message can be identified
78 * by checking for NDTA_CONFIG. The device specific messages do
79 * not contain this TLV but have NDTPA_IFINDEX set to the
80 * corresponding interface index.
81 *
82 * To change neighbour table attributes, send RTM_SETNEIGHTBL
83 * with NDTA_NAME set. Changeable attribute include NDTA_THRESH[1-3],
84 * NDTA_GC_INTERVAL, and all TLVs in NDTA_PARMS unless marked
85 * otherwise. Device specific parameter sets can be changed by
86 * setting NDTPA_IFINDEX to the interface index of the corresponding
87 * device.
88 ****/
89
90 struct ndt_stats
91 {
92 __u64 ndts_allocs;
93 __u64 ndts_destroys;
94 __u64 ndts_hash_grows;
95 __u64 ndts_res_failed;
96 __u64 ndts_lookups;
97 __u64 ndts_hits;
98 __u64 ndts_rcv_probes_mcast;
99 __u64 ndts_rcv_probes_ucast;
100 __u64 ndts_periodic_gc_runs;
101 __u64 ndts_forced_gc_runs;
102 };
103
104 enum {
105 NDTPA_UNSPEC,
106 NDTPA_IFINDEX, /* u32, unchangeable */
107 NDTPA_REFCNT, /* u32, read-only */
108 NDTPA_REACHABLE_TIME, /* u64, read-only, msecs */
109 NDTPA_BASE_REACHABLE_TIME, /* u64, msecs */
110 NDTPA_RETRANS_TIME, /* u64, msecs */
111 NDTPA_GC_STALETIME, /* u64, msecs */
112 NDTPA_DELAY_PROBE_TIME, /* u64, msecs */
113 NDTPA_QUEUE_LEN, /* u32 */
114 NDTPA_APP_PROBES, /* u32 */
115 NDTPA_UCAST_PROBES, /* u32 */
116 NDTPA_MCAST_PROBES, /* u32 */
117 NDTPA_ANYCAST_DELAY, /* u64, msecs */
118 NDTPA_PROXY_DELAY, /* u64, msecs */
119 NDTPA_PROXY_QLEN, /* u32 */
120 NDTPA_LOCKTIME, /* u64, msecs */
121 __NDTPA_MAX
122 };
123 #define NDTPA_MAX (__NDTPA_MAX - 1)
124
125 struct ndtmsg
126 {
127 __u8 ndtm_family;
128 __u8 ndtm_pad1;
129 __u16 ndtm_pad2;
130 };
131
132 struct ndt_config
133 {
134 __u16 ndtc_key_len;
135 __u16 ndtc_entry_size;
136 __u32 ndtc_entries;
137 __u32 ndtc_last_flush; /* delta to now in msecs */
138 __u32 ndtc_last_rand; /* delta to now in msecs */
139 __u32 ndtc_hash_rnd;
140 __u32 ndtc_hash_mask;
141 __u32 ndtc_hash_chain_gc;
142 __u32 ndtc_proxy_qlen;
143 };
144
145 enum {
146 NDTA_UNSPEC,
147 NDTA_NAME, /* char *, unchangeable */
148 NDTA_THRESH1, /* u32 */
149 NDTA_THRESH2, /* u32 */
150 NDTA_THRESH3, /* u32 */
151 NDTA_CONFIG, /* struct ndt_config, read-only */
152 NDTA_PARMS, /* nested TLV NDTPA_* */
153 NDTA_STATS, /* struct ndt_stats, read-only */
154 NDTA_GC_INTERVAL, /* u64, msecs */
155 __NDTA_MAX
156 };
157 #define NDTA_MAX (__NDTA_MAX - 1)
158
159 #endif
160
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