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