1#ifndef __LINUX_NEIGHBOUR_H
2#define __LINUX_NEIGHBOUR_H
3
4#include <linux/types.h>
5#include <linux/netlink.h>
6
7struct ndmsg {
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	NDA_UNSPEC,
19	NDA_DST,
20	NDA_LLADDR,
21	NDA_CACHEINFO,
22	NDA_PROBES,
23	NDA_VLAN,
24	NDA_PORT,
25	NDA_VNI,
26	NDA_IFINDEX,
27	__NDA_MAX
28};
29
30#define NDA_MAX (__NDA_MAX - 1)
31
32/*
33 *	Neighbor Cache Entry Flags
34 */
35
36#define NTF_USE		0x01
37#define NTF_PROXY	0x08	/* == ATF_PUBL */
38#define NTF_ROUTER	0x80
39
40#define NTF_SELF	0x02
41#define NTF_MASTER	0x04
42
43/*
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.
61   NUD_PERMANENT also cannot be deleted by garbage collectors.
62 */
63
64struct nda_cacheinfo {
65	__u32		ndm_confirmed;
66	__u32		ndm_used;
67	__u32		ndm_updated;
68	__u32		ndm_refcnt;
69};
70
71/*****************************************************************
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
96struct ndt_stats {
97	__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 */
126	NDTPA_QUEUE_LENBYTES,		/* u32 */
127	__NDTPA_MAX
128};
129#define NDTPA_MAX (__NDTPA_MAX - 1)
130
131struct ndtmsg {
132	__u8		ndtm_family;
133	__u8		ndtm_pad1;
134	__u16		ndtm_pad2;
135};
136
137struct ndt_config {
138	__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
163#endif
164