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_MASTER,
28	NDA_LINK_NETNSID,
29	__NDA_MAX
30};
31
32#define NDA_MAX (__NDA_MAX - 1)
33
34/*
35 *	Neighbor Cache Entry Flags
36 */
37
38#define NTF_USE		0x01
39#define NTF_SELF	0x02
40#define NTF_MASTER	0x04
41#define NTF_PROXY	0x08	/* == ATF_PUBL */
42#define NTF_EXT_LEARNED	0x10
43#define NTF_ROUTER	0x80
44
45/*
46 *	Neighbor Cache Entry States.
47 */
48
49#define NUD_INCOMPLETE	0x01
50#define NUD_REACHABLE	0x02
51#define NUD_STALE	0x04
52#define NUD_DELAY	0x08
53#define NUD_PROBE	0x10
54#define NUD_FAILED	0x20
55
56/* Dummy states */
57#define NUD_NOARP	0x40
58#define NUD_PERMANENT	0x80
59#define NUD_NONE	0x00
60
61/* NUD_NOARP & NUD_PERMANENT are pseudostates, they never change
62   and make no address resolution or NUD.
63   NUD_PERMANENT also cannot be deleted by garbage collectors.
64 */
65
66struct nda_cacheinfo {
67	__u32		ndm_confirmed;
68	__u32		ndm_used;
69	__u32		ndm_updated;
70	__u32		ndm_refcnt;
71};
72
73/*****************************************************************
74 *		Neighbour tables specific messages.
75 *
76 * To retrieve the neighbour tables send RTM_GETNEIGHTBL with the
77 * NLM_F_DUMP flag set. Every neighbour table configuration is
78 * spread over multiple messages to avoid running into message
79 * size limits on systems with many interfaces. The first message
80 * in the sequence transports all not device specific data such as
81 * statistics, configuration, and the default parameter set.
82 * This message is followed by 0..n messages carrying device
83 * specific parameter sets.
84 * Although the ordering should be sufficient, NDTA_NAME can be
85 * used to identify sequences. The initial message can be identified
86 * by checking for NDTA_CONFIG. The device specific messages do
87 * not contain this TLV but have NDTPA_IFINDEX set to the
88 * corresponding interface index.
89 *
90 * To change neighbour table attributes, send RTM_SETNEIGHTBL
91 * with NDTA_NAME set. Changeable attribute include NDTA_THRESH[1-3],
92 * NDTA_GC_INTERVAL, and all TLVs in NDTA_PARMS unless marked
93 * otherwise. Device specific parameter sets can be changed by
94 * setting NDTPA_IFINDEX to the interface index of the corresponding
95 * device.
96 ****/
97
98struct ndt_stats {
99	__u64		ndts_allocs;
100	__u64		ndts_destroys;
101	__u64		ndts_hash_grows;
102	__u64		ndts_res_failed;
103	__u64		ndts_lookups;
104	__u64		ndts_hits;
105	__u64		ndts_rcv_probes_mcast;
106	__u64		ndts_rcv_probes_ucast;
107	__u64		ndts_periodic_gc_runs;
108	__u64		ndts_forced_gc_runs;
109};
110
111enum {
112	NDTPA_UNSPEC,
113	NDTPA_IFINDEX,			/* u32, unchangeable */
114	NDTPA_REFCNT,			/* u32, read-only */
115	NDTPA_REACHABLE_TIME,		/* u64, read-only, msecs */
116	NDTPA_BASE_REACHABLE_TIME,	/* u64, msecs */
117	NDTPA_RETRANS_TIME,		/* u64, msecs */
118	NDTPA_GC_STALETIME,		/* u64, msecs */
119	NDTPA_DELAY_PROBE_TIME,		/* u64, msecs */
120	NDTPA_QUEUE_LEN,		/* u32 */
121	NDTPA_APP_PROBES,		/* u32 */
122	NDTPA_UCAST_PROBES,		/* u32 */
123	NDTPA_MCAST_PROBES,		/* u32 */
124	NDTPA_ANYCAST_DELAY,		/* u64, msecs */
125	NDTPA_PROXY_DELAY,		/* u64, msecs */
126	NDTPA_PROXY_QLEN,		/* u32 */
127	NDTPA_LOCKTIME,			/* u64, msecs */
128	NDTPA_QUEUE_LENBYTES,		/* u32 */
129	NDTPA_MCAST_REPROBES,		/* u32 */
130	__NDTPA_MAX
131};
132#define NDTPA_MAX (__NDTPA_MAX - 1)
133
134struct ndtmsg {
135	__u8		ndtm_family;
136	__u8		ndtm_pad1;
137	__u16		ndtm_pad2;
138};
139
140struct ndt_config {
141	__u16		ndtc_key_len;
142	__u16		ndtc_entry_size;
143	__u32		ndtc_entries;
144	__u32		ndtc_last_flush;	/* delta to now in msecs */
145	__u32		ndtc_last_rand;		/* delta to now in msecs */
146	__u32		ndtc_hash_rnd;
147	__u32		ndtc_hash_mask;
148	__u32		ndtc_hash_chain_gc;
149	__u32		ndtc_proxy_qlen;
150};
151
152enum {
153	NDTA_UNSPEC,
154	NDTA_NAME,			/* char *, unchangeable */
155	NDTA_THRESH1,			/* u32 */
156	NDTA_THRESH2,			/* u32 */
157	NDTA_THRESH3,			/* u32 */
158	NDTA_CONFIG,			/* struct ndt_config, read-only */
159	NDTA_PARMS,			/* nested TLV NDTPA_* */
160	NDTA_STATS,			/* struct ndt_stats, read-only */
161	NDTA_GC_INTERVAL,		/* u64, msecs */
162	__NDTA_MAX
163};
164#define NDTA_MAX (__NDTA_MAX - 1)
165
166#endif
167