1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
2 | #ifndef __LINUX_NEIGHBOUR_H |
3 | #define __LINUX_NEIGHBOUR_H |
4 | |
5 | #include <linux/types.h> |
6 | #include <linux/netlink.h> |
7 | |
8 | struct ndmsg { |
9 | __u8 ndm_family; |
10 | __u8 ndm_pad1; |
11 | __u16 ndm_pad2; |
12 | __s32 ndm_ifindex; |
13 | __u16 ndm_state; |
14 | __u8 ndm_flags; |
15 | __u8 ndm_type; |
16 | }; |
17 | |
18 | enum { |
19 | NDA_UNSPEC, |
20 | NDA_DST, |
21 | NDA_LLADDR, |
22 | NDA_CACHEINFO, |
23 | NDA_PROBES, |
24 | NDA_VLAN, |
25 | NDA_PORT, |
26 | NDA_VNI, |
27 | NDA_IFINDEX, |
28 | NDA_MASTER, |
29 | NDA_LINK_NETNSID, |
30 | NDA_SRC_VNI, |
31 | __NDA_MAX |
32 | }; |
33 | |
34 | #define NDA_MAX (__NDA_MAX - 1) |
35 | |
36 | /* |
37 | * Neighbor Cache Entry Flags |
38 | */ |
39 | |
40 | #define NTF_USE 0x01 |
41 | #define NTF_SELF 0x02 |
42 | #define NTF_MASTER 0x04 |
43 | #define NTF_PROXY 0x08 /* == ATF_PUBL */ |
44 | #define NTF_EXT_LEARNED 0x10 |
45 | #define NTF_OFFLOADED 0x20 |
46 | #define NTF_ROUTER 0x80 |
47 | |
48 | /* |
49 | * Neighbor Cache Entry States. |
50 | */ |
51 | |
52 | #define NUD_INCOMPLETE 0x01 |
53 | #define NUD_REACHABLE 0x02 |
54 | #define NUD_STALE 0x04 |
55 | #define NUD_DELAY 0x08 |
56 | #define NUD_PROBE 0x10 |
57 | #define NUD_FAILED 0x20 |
58 | |
59 | /* Dummy states */ |
60 | #define NUD_NOARP 0x40 |
61 | #define NUD_PERMANENT 0x80 |
62 | #define NUD_NONE 0x00 |
63 | |
64 | /* NUD_NOARP & NUD_PERMANENT are pseudostates, they never change |
65 | and make no address resolution or NUD. |
66 | NUD_PERMANENT also cannot be deleted by garbage collectors. |
67 | */ |
68 | |
69 | struct nda_cacheinfo { |
70 | __u32 ndm_confirmed; |
71 | __u32 ndm_used; |
72 | __u32 ndm_updated; |
73 | __u32 ndm_refcnt; |
74 | }; |
75 | |
76 | /***************************************************************** |
77 | * Neighbour tables specific messages. |
78 | * |
79 | * To retrieve the neighbour tables send RTM_GETNEIGHTBL with the |
80 | * NLM_F_DUMP flag set. Every neighbour table configuration is |
81 | * spread over multiple messages to avoid running into message |
82 | * size limits on systems with many interfaces. The first message |
83 | * in the sequence transports all not device specific data such as |
84 | * statistics, configuration, and the default parameter set. |
85 | * This message is followed by 0..n messages carrying device |
86 | * specific parameter sets. |
87 | * Although the ordering should be sufficient, NDTA_NAME can be |
88 | * used to identify sequences. The initial message can be identified |
89 | * by checking for NDTA_CONFIG. The device specific messages do |
90 | * not contain this TLV but have NDTPA_IFINDEX set to the |
91 | * corresponding interface index. |
92 | * |
93 | * To change neighbour table attributes, send RTM_SETNEIGHTBL |
94 | * with NDTA_NAME set. Changeable attribute include NDTA_THRESH[1-3], |
95 | * NDTA_GC_INTERVAL, and all TLVs in NDTA_PARMS unless marked |
96 | * otherwise. Device specific parameter sets can be changed by |
97 | * setting NDTPA_IFINDEX to the interface index of the corresponding |
98 | * device. |
99 | ****/ |
100 | |
101 | struct ndt_stats { |
102 | __u64 ndts_allocs; |
103 | __u64 ndts_destroys; |
104 | __u64 ndts_hash_grows; |
105 | __u64 ndts_res_failed; |
106 | __u64 ndts_lookups; |
107 | __u64 ndts_hits; |
108 | __u64 ndts_rcv_probes_mcast; |
109 | __u64 ndts_rcv_probes_ucast; |
110 | __u64 ndts_periodic_gc_runs; |
111 | __u64 ndts_forced_gc_runs; |
112 | __u64 ndts_table_fulls; |
113 | }; |
114 | |
115 | enum { |
116 | NDTPA_UNSPEC, |
117 | NDTPA_IFINDEX, /* u32, unchangeable */ |
118 | NDTPA_REFCNT, /* u32, read-only */ |
119 | NDTPA_REACHABLE_TIME, /* u64, read-only, msecs */ |
120 | NDTPA_BASE_REACHABLE_TIME, /* u64, msecs */ |
121 | NDTPA_RETRANS_TIME, /* u64, msecs */ |
122 | NDTPA_GC_STALETIME, /* u64, msecs */ |
123 | NDTPA_DELAY_PROBE_TIME, /* u64, msecs */ |
124 | NDTPA_QUEUE_LEN, /* u32 */ |
125 | NDTPA_APP_PROBES, /* u32 */ |
126 | NDTPA_UCAST_PROBES, /* u32 */ |
127 | NDTPA_MCAST_PROBES, /* u32 */ |
128 | NDTPA_ANYCAST_DELAY, /* u64, msecs */ |
129 | NDTPA_PROXY_DELAY, /* u64, msecs */ |
130 | NDTPA_PROXY_QLEN, /* u32 */ |
131 | NDTPA_LOCKTIME, /* u64, msecs */ |
132 | NDTPA_QUEUE_LENBYTES, /* u32 */ |
133 | NDTPA_MCAST_REPROBES, /* u32 */ |
134 | NDTPA_PAD, |
135 | __NDTPA_MAX |
136 | }; |
137 | #define NDTPA_MAX (__NDTPA_MAX - 1) |
138 | |
139 | struct ndtmsg { |
140 | __u8 ndtm_family; |
141 | __u8 ndtm_pad1; |
142 | __u16 ndtm_pad2; |
143 | }; |
144 | |
145 | struct ndt_config { |
146 | __u16 ndtc_key_len; |
147 | __u16 ndtc_entry_size; |
148 | __u32 ndtc_entries; |
149 | __u32 ndtc_last_flush; /* delta to now in msecs */ |
150 | __u32 ndtc_last_rand; /* delta to now in msecs */ |
151 | __u32 ndtc_hash_rnd; |
152 | __u32 ndtc_hash_mask; |
153 | __u32 ndtc_hash_chain_gc; |
154 | __u32 ndtc_proxy_qlen; |
155 | }; |
156 | |
157 | enum { |
158 | NDTA_UNSPEC, |
159 | NDTA_NAME, /* char *, unchangeable */ |
160 | NDTA_THRESH1, /* u32 */ |
161 | NDTA_THRESH2, /* u32 */ |
162 | NDTA_THRESH3, /* u32 */ |
163 | NDTA_CONFIG, /* struct ndt_config, read-only */ |
164 | NDTA_PARMS, /* nested TLV NDTPA_* */ |
165 | NDTA_STATS, /* struct ndt_stats, read-only */ |
166 | NDTA_GC_INTERVAL, /* u64, msecs */ |
167 | NDTA_PAD, |
168 | __NDTA_MAX |
169 | }; |
170 | #define NDTA_MAX (__NDTA_MAX - 1) |
171 | |
172 | #endif |
173 | |