1#ifndef __LINUX_NEIGHBOUR_H
2#define __LINUX_NEIGHBOUR_H
3
4#include <linux/netlink.h>
5
6struct 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
17enum
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
57struct 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
90struct 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
104enum {
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
125struct ndtmsg
126{
127	__u8		ndtm_family;
128	__u8		ndtm_pad1;
129	__u16		ndtm_pad2;
130};
131
132struct 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
145enum {
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