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_VLAN,
24 NDA_PORT,
25 NDA_VNI,
26 NDA_IFINDEX,
27 NDA_MASTER,
28 NDA_LINK_NETNSID,
29 NDA_SRC_VNI,
30 __NDA_MAX
31};
32
33#define NDA_MAX (__NDA_MAX - 1)
34
35/*
36 * Neighbor Cache Entry Flags
37 */
38
39#define NTF_USE 0x01
40#define NTF_SELF 0x02
41#define NTF_MASTER 0x04
42#define NTF_PROXY 0x08 /* == ATF_PUBL */
43#define NTF_EXT_LEARNED 0x10
44#define NTF_OFFLOADED 0x20
45#define NTF_ROUTER 0x80
46
47/*
48 * Neighbor Cache Entry States.
49 */
50
51#define NUD_INCOMPLETE 0x01
52#define NUD_REACHABLE 0x02
53#define NUD_STALE 0x04
54#define NUD_DELAY 0x08
55#define NUD_PROBE 0x10
56#define NUD_FAILED 0x20
57
58/* Dummy states */
59#define NUD_NOARP 0x40
60#define NUD_PERMANENT 0x80
61#define NUD_NONE 0x00
62
63/* NUD_NOARP & NUD_PERMANENT are pseudostates, they never change
64 and make no address resolution or NUD.
65 NUD_PERMANENT also cannot be deleted by garbage collectors.
66 */
67
68struct nda_cacheinfo {
69 __u32 ndm_confirmed;
70 __u32 ndm_used;
71 __u32 ndm_updated;
72 __u32 ndm_refcnt;
73};
74
75/*****************************************************************
76 * Neighbour tables specific messages.
77 *
78 * To retrieve the neighbour tables send RTM_GETNEIGHTBL with the
79 * NLM_F_DUMP flag set. Every neighbour table configuration is
80 * spread over multiple messages to avoid running into message
81 * size limits on systems with many interfaces. The first message
82 * in the sequence transports all not device specific data such as
83 * statistics, configuration, and the default parameter set.
84 * This message is followed by 0..n messages carrying device
85 * specific parameter sets.
86 * Although the ordering should be sufficient, NDTA_NAME can be
87 * used to identify sequences. The initial message can be identified
88 * by checking for NDTA_CONFIG. The device specific messages do
89 * not contain this TLV but have NDTPA_IFINDEX set to the
90 * corresponding interface index.
91 *
92 * To change neighbour table attributes, send RTM_SETNEIGHTBL
93 * with NDTA_NAME set. Changeable attribute include NDTA_THRESH[1-3],
94 * NDTA_GC_INTERVAL, and all TLVs in NDTA_PARMS unless marked
95 * otherwise. Device specific parameter sets can be changed by
96 * setting NDTPA_IFINDEX to the interface index of the corresponding
97 * device.
98 ****/
99
100struct ndt_stats {
101 __u64 ndts_allocs;
102 __u64 ndts_destroys;
103 __u64 ndts_hash_grows;
104 __u64 ndts_res_failed;
105 __u64 ndts_lookups;
106 __u64 ndts_hits;
107 __u64 ndts_rcv_probes_mcast;
108 __u64 ndts_rcv_probes_ucast;
109 __u64 ndts_periodic_gc_runs;
110 __u64 ndts_forced_gc_runs;
111 __u64 ndts_table_fulls;
112};
113
114enum {
115 NDTPA_UNSPEC,
116 NDTPA_IFINDEX, /* u32, unchangeable */
117 NDTPA_REFCNT, /* u32, read-only */
118 NDTPA_REACHABLE_TIME, /* u64, read-only, msecs */
119 NDTPA_BASE_REACHABLE_TIME, /* u64, msecs */
120 NDTPA_RETRANS_TIME, /* u64, msecs */
121 NDTPA_GC_STALETIME, /* u64, msecs */
122 NDTPA_DELAY_PROBE_TIME, /* u64, msecs */
123 NDTPA_QUEUE_LEN, /* u32 */
124 NDTPA_APP_PROBES, /* u32 */
125 NDTPA_UCAST_PROBES, /* u32 */
126 NDTPA_MCAST_PROBES, /* u32 */
127 NDTPA_ANYCAST_DELAY, /* u64, msecs */
128 NDTPA_PROXY_DELAY, /* u64, msecs */
129 NDTPA_PROXY_QLEN, /* u32 */
130 NDTPA_LOCKTIME, /* u64, msecs */
131 NDTPA_QUEUE_LENBYTES, /* u32 */
132 NDTPA_MCAST_REPROBES, /* u32 */
133 NDTPA_PAD,
134 __NDTPA_MAX
135};
136#define NDTPA_MAX (__NDTPA_MAX - 1)
137
138struct ndtmsg {
139 __u8 ndtm_family;
140 __u8 ndtm_pad1;
141 __u16 ndtm_pad2;
142};
143
144struct ndt_config {
145 __u16 ndtc_key_len;
146 __u16 ndtc_entry_size;
147 __u32 ndtc_entries;
148 __u32 ndtc_last_flush; /* delta to now in msecs */
149 __u32 ndtc_last_rand; /* delta to now in msecs */
150 __u32 ndtc_hash_rnd;
151 __u32 ndtc_hash_mask;
152 __u32 ndtc_hash_chain_gc;
153 __u32 ndtc_proxy_qlen;
154};
155
156enum {
157 NDTA_UNSPEC,
158 NDTA_NAME, /* char *, unchangeable */
159 NDTA_THRESH1, /* u32 */
160 NDTA_THRESH2, /* u32 */
161 NDTA_THRESH3, /* u32 */
162 NDTA_CONFIG, /* struct ndt_config, read-only */
163 NDTA_PARMS, /* nested TLV NDTPA_* */
164 NDTA_STATS, /* struct ndt_stats, read-only */
165 NDTA_GC_INTERVAL, /* u64, msecs */
166 NDTA_PAD,
167 __NDTA_MAX
168};
169#define NDTA_MAX (__NDTA_MAX - 1)
170
171#endif