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 __u64 ndts_table_fulls;
110};
111
112enum {
113 NDTPA_UNSPEC,
114 NDTPA_IFINDEX, /* u32, unchangeable */
115 NDTPA_REFCNT, /* u32, read-only */
116 NDTPA_REACHABLE_TIME, /* u64, read-only, msecs */
117 NDTPA_BASE_REACHABLE_TIME, /* u64, msecs */
118 NDTPA_RETRANS_TIME, /* u64, msecs */
119 NDTPA_GC_STALETIME, /* u64, msecs */
120 NDTPA_DELAY_PROBE_TIME, /* u64, msecs */
121 NDTPA_QUEUE_LEN, /* u32 */
122 NDTPA_APP_PROBES, /* u32 */
123 NDTPA_UCAST_PROBES, /* u32 */
124 NDTPA_MCAST_PROBES, /* u32 */
125 NDTPA_ANYCAST_DELAY, /* u64, msecs */
126 NDTPA_PROXY_DELAY, /* u64, msecs */
127 NDTPA_PROXY_QLEN, /* u32 */
128 NDTPA_LOCKTIME, /* u64, msecs */
129 NDTPA_QUEUE_LENBYTES, /* u32 */
130 NDTPA_MCAST_REPROBES, /* u32 */
131 NDTPA_PAD,
132 __NDTPA_MAX
133};
134#define NDTPA_MAX (__NDTPA_MAX - 1)
135
136struct ndtmsg {
137 __u8 ndtm_family;
138 __u8 ndtm_pad1;
139 __u16 ndtm_pad2;
140};
141
142struct ndt_config {
143 __u16 ndtc_key_len;
144 __u16 ndtc_entry_size;
145 __u32 ndtc_entries;
146 __u32 ndtc_last_flush; /* delta to now in msecs */
147 __u32 ndtc_last_rand; /* delta to now in msecs */
148 __u32 ndtc_hash_rnd;
149 __u32 ndtc_hash_mask;
150 __u32 ndtc_hash_chain_gc;
151 __u32 ndtc_proxy_qlen;
152};
153
154enum {
155 NDTA_UNSPEC,
156 NDTA_NAME, /* char *, unchangeable */
157 NDTA_THRESH1, /* u32 */
158 NDTA_THRESH2, /* u32 */
159 NDTA_THRESH3, /* u32 */
160 NDTA_CONFIG, /* struct ndt_config, read-only */
161 NDTA_PARMS, /* nested TLV NDTPA_* */
162 NDTA_STATS, /* struct ndt_stats, read-only */
163 NDTA_GC_INTERVAL, /* u64, msecs */
164 NDTA_PAD,
165 __NDTA_MAX
166};
167#define NDTA_MAX (__NDTA_MAX - 1)
168
169#endif
170