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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,
Vlad Yasevich1690be62013-02-13 12:00:18 +000023 NDA_VLAN,
David Stevens66817122013-03-15 04:35:51 +000024 NDA_PORT,
25 NDA_VNI,
26 NDA_IFINDEX,
Roopa Prabhu41c389d2014-05-27 22:39:37 -070027 NDA_MASTER,
Thomas Graf9067c722006-08-07 17:57:44 -070028 __NDA_MAX
29};
30
31#define NDA_MAX (__NDA_MAX - 1)
32
33/*
34 * Neighbor Cache Entry Flags
35 */
36
Eric Biederman0c5c2d32009-03-04 00:03:08 -080037#define NTF_USE 0x01
John Fastabend77162022012-04-15 06:43:56 +000038#define NTF_SELF 0x02
39#define NTF_MASTER 0x04
Jiri Pirkob7485f62014-11-28 14:34:13 +010040#define NTF_PROXY 0x08 /* == ATF_PUBL */
41#define NTF_ROUTER 0x80
John Fastabend77162022012-04-15 06:43:56 +000042
Thomas Graf9067c722006-08-07 17:57:44 -070043/*
44 * Neighbor Cache Entry States.
45 */
46
47#define NUD_INCOMPLETE 0x01
48#define NUD_REACHABLE 0x02
49#define NUD_STALE 0x04
50#define NUD_DELAY 0x08
51#define NUD_PROBE 0x10
52#define NUD_FAILED 0x20
53
54/* Dummy states */
55#define NUD_NOARP 0x40
56#define NUD_PERMANENT 0x80
57#define NUD_NONE 0x00
58
59/* NUD_NOARP & NUD_PERMANENT are pseudostates, they never change
60 and make no address resolution or NUD.
Li Zhongc04e7da2014-01-22 15:29:55 +080061 NUD_PERMANENT also cannot be deleted by garbage collectors.
Thomas Graf9067c722006-08-07 17:57:44 -070062 */
63
Eric Dumazetd94d9fe2009-11-04 09:50:58 -080064struct nda_cacheinfo {
Thomas Graf9067c722006-08-07 17:57:44 -070065 __u32 ndm_confirmed;
66 __u32 ndm_used;
67 __u32 ndm_updated;
68 __u32 ndm_refcnt;
69};
70
Thomas Grafb63bbc52006-08-07 18:00:57 -070071/*****************************************************************
72 * Neighbour tables specific messages.
73 *
74 * To retrieve the neighbour tables send RTM_GETNEIGHTBL with the
75 * NLM_F_DUMP flag set. Every neighbour table configuration is
76 * spread over multiple messages to avoid running into message
77 * size limits on systems with many interfaces. The first message
78 * in the sequence transports all not device specific data such as
79 * statistics, configuration, and the default parameter set.
80 * This message is followed by 0..n messages carrying device
81 * specific parameter sets.
82 * Although the ordering should be sufficient, NDTA_NAME can be
83 * used to identify sequences. The initial message can be identified
84 * by checking for NDTA_CONFIG. The device specific messages do
85 * not contain this TLV but have NDTPA_IFINDEX set to the
86 * corresponding interface index.
87 *
88 * To change neighbour table attributes, send RTM_SETNEIGHTBL
89 * with NDTA_NAME set. Changeable attribute include NDTA_THRESH[1-3],
90 * NDTA_GC_INTERVAL, and all TLVs in NDTA_PARMS unless marked
91 * otherwise. Device specific parameter sets can be changed by
92 * setting NDTPA_IFINDEX to the interface index of the corresponding
93 * device.
94 ****/
95
Eric Dumazetd94d9fe2009-11-04 09:50:58 -080096struct ndt_stats {
Thomas Grafb63bbc52006-08-07 18:00:57 -070097 __u64 ndts_allocs;
98 __u64 ndts_destroys;
99 __u64 ndts_hash_grows;
100 __u64 ndts_res_failed;
101 __u64 ndts_lookups;
102 __u64 ndts_hits;
103 __u64 ndts_rcv_probes_mcast;
104 __u64 ndts_rcv_probes_ucast;
105 __u64 ndts_periodic_gc_runs;
106 __u64 ndts_forced_gc_runs;
107};
108
109enum {
110 NDTPA_UNSPEC,
111 NDTPA_IFINDEX, /* u32, unchangeable */
112 NDTPA_REFCNT, /* u32, read-only */
113 NDTPA_REACHABLE_TIME, /* u64, read-only, msecs */
114 NDTPA_BASE_REACHABLE_TIME, /* u64, msecs */
115 NDTPA_RETRANS_TIME, /* u64, msecs */
116 NDTPA_GC_STALETIME, /* u64, msecs */
117 NDTPA_DELAY_PROBE_TIME, /* u64, msecs */
118 NDTPA_QUEUE_LEN, /* u32 */
119 NDTPA_APP_PROBES, /* u32 */
120 NDTPA_UCAST_PROBES, /* u32 */
121 NDTPA_MCAST_PROBES, /* u32 */
122 NDTPA_ANYCAST_DELAY, /* u64, msecs */
123 NDTPA_PROXY_DELAY, /* u64, msecs */
124 NDTPA_PROXY_QLEN, /* u32 */
125 NDTPA_LOCKTIME, /* u64, msecs */
Eric Dumazet8b5c1712011-11-09 12:07:14 +0000126 NDTPA_QUEUE_LENBYTES, /* u32 */
Thomas Grafb63bbc52006-08-07 18:00:57 -0700127 __NDTPA_MAX
128};
129#define NDTPA_MAX (__NDTPA_MAX - 1)
130
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800131struct ndtmsg {
Thomas Grafb63bbc52006-08-07 18:00:57 -0700132 __u8 ndtm_family;
133 __u8 ndtm_pad1;
134 __u16 ndtm_pad2;
135};
136
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800137struct ndt_config {
Thomas Grafb63bbc52006-08-07 18:00:57 -0700138 __u16 ndtc_key_len;
139 __u16 ndtc_entry_size;
140 __u32 ndtc_entries;
141 __u32 ndtc_last_flush; /* delta to now in msecs */
142 __u32 ndtc_last_rand; /* delta to now in msecs */
143 __u32 ndtc_hash_rnd;
144 __u32 ndtc_hash_mask;
145 __u32 ndtc_hash_chain_gc;
146 __u32 ndtc_proxy_qlen;
147};
148
149enum {
150 NDTA_UNSPEC,
151 NDTA_NAME, /* char *, unchangeable */
152 NDTA_THRESH1, /* u32 */
153 NDTA_THRESH2, /* u32 */
154 NDTA_THRESH3, /* u32 */
155 NDTA_CONFIG, /* struct ndt_config, read-only */
156 NDTA_PARMS, /* nested TLV NDTPA_* */
157 NDTA_STATS, /* struct ndt_stats, read-only */
158 NDTA_GC_INTERVAL, /* u64, msecs */
159 __NDTA_MAX
160};
161#define NDTA_MAX (__NDTA_MAX - 1)
162
Thomas Graf9067c722006-08-07 17:57:44 -0700163#endif