Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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_MAX
24};
25
26#define NDA_MAX (__NDA_MAX - 1)
27
28/*
29 * Neighbor Cache Entry Flags
30 */
31
32#define NTF_USE 0x01
33#define NTF_PROXY 0x08 /* == ATF_PUBL */
34#define NTF_ROUTER 0x80
35
36#define NTF_SELF 0x02
37#define NTF_MASTER 0x04
38
39/*
40 * Neighbor Cache Entry States.
41 */
42
43#define NUD_INCOMPLETE 0x01
44#define NUD_REACHABLE 0x02
45#define NUD_STALE 0x04
46#define NUD_DELAY 0x08
47#define NUD_PROBE 0x10
48#define NUD_FAILED 0x20
49
50/* Dummy states */
51#define NUD_NOARP 0x40
52#define NUD_PERMANENT 0x80
53#define NUD_NONE 0x00
54
55/* NUD_NOARP & NUD_PERMANENT are pseudostates, they never change
56 and make no address resolution or NUD.
57 NUD_PERMANENT is also cannot be deleted by garbage collectors.
58 */
59
60struct nda_cacheinfo {
61 __u32 ndm_confirmed;
62 __u32 ndm_used;
63 __u32 ndm_updated;
64 __u32 ndm_refcnt;
65};
66
67/*****************************************************************
68 * Neighbour tables specific messages.
69 *
70 * To retrieve the neighbour tables send RTM_GETNEIGHTBL with the
71 * NLM_F_DUMP flag set. Every neighbour table configuration is
72 * spread over multiple messages to avoid running into message
73 * size limits on systems with many interfaces. The first message
74 * in the sequence transports all not device specific data such as
75 * statistics, configuration, and the default parameter set.
76 * This message is followed by 0..n messages carrying device
77 * specific parameter sets.
78 * Although the ordering should be sufficient, NDTA_NAME can be
79 * used to identify sequences. The initial message can be identified
80 * by checking for NDTA_CONFIG. The device specific messages do
81 * not contain this TLV but have NDTPA_IFINDEX set to the
82 * corresponding interface index.
83 *
84 * To change neighbour table attributes, send RTM_SETNEIGHTBL
85 * with NDTA_NAME set. Changeable attribute include NDTA_THRESH[1-3],
86 * NDTA_GC_INTERVAL, and all TLVs in NDTA_PARMS unless marked
87 * otherwise. Device specific parameter sets can be changed by
88 * setting NDTPA_IFINDEX to the interface index of the corresponding
89 * device.
90 ****/
91
92struct ndt_stats {
93 __u64 ndts_allocs;
94 __u64 ndts_destroys;
95 __u64 ndts_hash_grows;
96 __u64 ndts_res_failed;
97 __u64 ndts_lookups;
98 __u64 ndts_hits;
99 __u64 ndts_rcv_probes_mcast;
100 __u64 ndts_rcv_probes_ucast;
101 __u64 ndts_periodic_gc_runs;
102 __u64 ndts_forced_gc_runs;
103};
104
105enum {
106 NDTPA_UNSPEC,
107 NDTPA_IFINDEX, /* u32, unchangeable */
108 NDTPA_REFCNT, /* u32, read-only */
109 NDTPA_REACHABLE_TIME, /* u64, read-only, msecs */
110 NDTPA_BASE_REACHABLE_TIME, /* u64, msecs */
111 NDTPA_RETRANS_TIME, /* u64, msecs */
112 NDTPA_GC_STALETIME, /* u64, msecs */
113 NDTPA_DELAY_PROBE_TIME, /* u64, msecs */
114 NDTPA_QUEUE_LEN, /* u32 */
115 NDTPA_APP_PROBES, /* u32 */
116 NDTPA_UCAST_PROBES, /* u32 */
117 NDTPA_MCAST_PROBES, /* u32 */
118 NDTPA_ANYCAST_DELAY, /* u64, msecs */
119 NDTPA_PROXY_DELAY, /* u64, msecs */
120 NDTPA_PROXY_QLEN, /* u32 */
121 NDTPA_LOCKTIME, /* u64, msecs */
122 NDTPA_QUEUE_LENBYTES, /* u32 */
123 __NDTPA_MAX
124};
125#define NDTPA_MAX (__NDTPA_MAX - 1)
126
127struct ndtmsg {
128 __u8 ndtm_family;
129 __u8 ndtm_pad1;
130 __u16 ndtm_pad2;
131};
132
133struct ndt_config {
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