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6f52b16c | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
9067c722 TG |
2 | #ifndef __LINUX_NEIGHBOUR_H |
3 | #define __LINUX_NEIGHBOUR_H | |
4 | ||
ee79a641 | 5 | #include <linux/types.h> |
9067c722 TG |
6 | #include <linux/netlink.h> |
7 | ||
d94d9fee | 8 | struct ndmsg { |
9067c722 TG |
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 | ||
d94d9fee | 18 | enum { |
9067c722 TG |
19 | NDA_UNSPEC, |
20 | NDA_DST, | |
21 | NDA_LLADDR, | |
22 | NDA_CACHEINFO, | |
23 | NDA_PROBES, | |
1690be63 | 24 | NDA_VLAN, |
6681712d DS |
25 | NDA_PORT, |
26 | NDA_VNI, | |
27 | NDA_IFINDEX, | |
41c389d7 | 28 | NDA_MASTER, |
4967082b | 29 | NDA_LINK_NETNSID, |
3ad7a4b1 | 30 | NDA_SRC_VNI, |
df9b0e30 | 31 | NDA_PROTOCOL, /* Originator of entry */ |
1274e1cc | 32 | NDA_NH_ID, |
899426b3 | 33 | NDA_FDB_EXT_ATTRS, |
2c611ad9 | 34 | NDA_FLAGS_EXT, |
ea2c0f9e NA |
35 | NDA_NDM_STATE_MASK, |
36 | NDA_NDM_FLAGS_MASK, | |
9067c722 TG |
37 | __NDA_MAX |
38 | }; | |
39 | ||
40 | #define NDA_MAX (__NDA_MAX - 1) | |
41 | ||
42 | /* | |
43 | * Neighbor Cache Entry Flags | |
44 | */ | |
45 | ||
7482e384 DB |
46 | #define NTF_USE (1 << 0) |
47 | #define NTF_SELF (1 << 1) | |
48 | #define NTF_MASTER (1 << 2) | |
49 | #define NTF_PROXY (1 << 3) /* == ATF_PUBL */ | |
50 | #define NTF_EXT_LEARNED (1 << 4) | |
51 | #define NTF_OFFLOADED (1 << 5) | |
52 | #define NTF_STICKY (1 << 6) | |
53 | #define NTF_ROUTER (1 << 7) | |
54 | /* Extended flags under NDA_FLAGS_EXT: */ | |
a35ec8e3 HS |
55 | #define NTF_EXT_MANAGED (1 << 0) |
56 | #define NTF_EXT_LOCKED (1 << 1) | |
77162022 | 57 | |
9067c722 TG |
58 | /* |
59 | * Neighbor Cache Entry States. | |
60 | */ | |
61 | ||
62 | #define NUD_INCOMPLETE 0x01 | |
63 | #define NUD_REACHABLE 0x02 | |
64 | #define NUD_STALE 0x04 | |
65 | #define NUD_DELAY 0x08 | |
66 | #define NUD_PROBE 0x10 | |
67 | #define NUD_FAILED 0x20 | |
68 | ||
69 | /* Dummy states */ | |
70 | #define NUD_NOARP 0x40 | |
71 | #define NUD_PERMANENT 0x80 | |
72 | #define NUD_NONE 0x00 | |
73 | ||
7482e384 DB |
74 | /* NUD_NOARP & NUD_PERMANENT are pseudostates, they never change and make no |
75 | * address resolution or NUD. | |
76 | * | |
77 | * NUD_PERMANENT also cannot be deleted by garbage collectors. This holds true | |
78 | * for dynamic entries with NTF_EXT_LEARNED flag as well. However, upon carrier | |
79 | * down event, NUD_PERMANENT entries are not flushed whereas NTF_EXT_LEARNED | |
80 | * flagged entries explicitly are (which is also consistent with the routing | |
81 | * subsystem). | |
82 | * | |
45a68787 NA |
83 | * When NTF_EXT_LEARNED is set for a bridge fdb entry the different cache entry |
84 | * states don't make sense and thus are ignored. Such entries don't age and | |
85 | * can roam. | |
7482e384 DB |
86 | * |
87 | * NTF_EXT_MANAGED flagged neigbor entries are managed by the kernel on behalf | |
88 | * of a user space control plane, and automatically refreshed so that (if | |
89 | * possible) they remain in NUD_REACHABLE state. | |
a35ec8e3 HS |
90 | * |
91 | * NTF_EXT_LOCKED flagged bridge FDB entries are entries generated by the | |
92 | * bridge in response to a host trying to communicate via a locked bridge port | |
93 | * with MAB enabled. Their purpose is to notify user space that a host requires | |
94 | * authentication. | |
9067c722 TG |
95 | */ |
96 | ||
d94d9fee | 97 | struct nda_cacheinfo { |
9067c722 TG |
98 | __u32 ndm_confirmed; |
99 | __u32 ndm_used; | |
100 | __u32 ndm_updated; | |
101 | __u32 ndm_refcnt; | |
102 | }; | |
103 | ||
b63bbc50 TG |
104 | /***************************************************************** |
105 | * Neighbour tables specific messages. | |
106 | * | |
107 | * To retrieve the neighbour tables send RTM_GETNEIGHTBL with the | |
108 | * NLM_F_DUMP flag set. Every neighbour table configuration is | |
109 | * spread over multiple messages to avoid running into message | |
110 | * size limits on systems with many interfaces. The first message | |
111 | * in the sequence transports all not device specific data such as | |
112 | * statistics, configuration, and the default parameter set. | |
113 | * This message is followed by 0..n messages carrying device | |
114 | * specific parameter sets. | |
115 | * Although the ordering should be sufficient, NDTA_NAME can be | |
116 | * used to identify sequences. The initial message can be identified | |
117 | * by checking for NDTA_CONFIG. The device specific messages do | |
118 | * not contain this TLV but have NDTPA_IFINDEX set to the | |
119 | * corresponding interface index. | |
120 | * | |
121 | * To change neighbour table attributes, send RTM_SETNEIGHTBL | |
122 | * with NDTA_NAME set. Changeable attribute include NDTA_THRESH[1-3], | |
123 | * NDTA_GC_INTERVAL, and all TLVs in NDTA_PARMS unless marked | |
124 | * otherwise. Device specific parameter sets can be changed by | |
125 | * setting NDTPA_IFINDEX to the interface index of the corresponding | |
126 | * device. | |
127 | ****/ | |
128 | ||
d94d9fee | 129 | struct ndt_stats { |
b63bbc50 TG |
130 | __u64 ndts_allocs; |
131 | __u64 ndts_destroys; | |
132 | __u64 ndts_hash_grows; | |
133 | __u64 ndts_res_failed; | |
134 | __u64 ndts_lookups; | |
135 | __u64 ndts_hits; | |
136 | __u64 ndts_rcv_probes_mcast; | |
137 | __u64 ndts_rcv_probes_ucast; | |
138 | __u64 ndts_periodic_gc_runs; | |
139 | __u64 ndts_forced_gc_runs; | |
fb811395 | 140 | __u64 ndts_table_fulls; |
b63bbc50 TG |
141 | }; |
142 | ||
143 | enum { | |
144 | NDTPA_UNSPEC, | |
145 | NDTPA_IFINDEX, /* u32, unchangeable */ | |
146 | NDTPA_REFCNT, /* u32, read-only */ | |
147 | NDTPA_REACHABLE_TIME, /* u64, read-only, msecs */ | |
148 | NDTPA_BASE_REACHABLE_TIME, /* u64, msecs */ | |
149 | NDTPA_RETRANS_TIME, /* u64, msecs */ | |
150 | NDTPA_GC_STALETIME, /* u64, msecs */ | |
151 | NDTPA_DELAY_PROBE_TIME, /* u64, msecs */ | |
152 | NDTPA_QUEUE_LEN, /* u32 */ | |
153 | NDTPA_APP_PROBES, /* u32 */ | |
154 | NDTPA_UCAST_PROBES, /* u32 */ | |
155 | NDTPA_MCAST_PROBES, /* u32 */ | |
156 | NDTPA_ANYCAST_DELAY, /* u64, msecs */ | |
157 | NDTPA_PROXY_DELAY, /* u64, msecs */ | |
158 | NDTPA_PROXY_QLEN, /* u32 */ | |
159 | NDTPA_LOCKTIME, /* u64, msecs */ | |
8b5c171b | 160 | NDTPA_QUEUE_LENBYTES, /* u32 */ |
8da86466 | 161 | NDTPA_MCAST_REPROBES, /* u32 */ |
2175d87c | 162 | NDTPA_PAD, |
211da42e | 163 | NDTPA_INTERVAL_PROBE_TIME_MS, /* u64, msecs */ |
b63bbc50 TG |
164 | __NDTPA_MAX |
165 | }; | |
166 | #define NDTPA_MAX (__NDTPA_MAX - 1) | |
167 | ||
d94d9fee | 168 | struct ndtmsg { |
b63bbc50 TG |
169 | __u8 ndtm_family; |
170 | __u8 ndtm_pad1; | |
171 | __u16 ndtm_pad2; | |
172 | }; | |
173 | ||
d94d9fee | 174 | struct ndt_config { |
b63bbc50 TG |
175 | __u16 ndtc_key_len; |
176 | __u16 ndtc_entry_size; | |
177 | __u32 ndtc_entries; | |
178 | __u32 ndtc_last_flush; /* delta to now in msecs */ | |
179 | __u32 ndtc_last_rand; /* delta to now in msecs */ | |
180 | __u32 ndtc_hash_rnd; | |
181 | __u32 ndtc_hash_mask; | |
182 | __u32 ndtc_hash_chain_gc; | |
183 | __u32 ndtc_proxy_qlen; | |
184 | }; | |
185 | ||
186 | enum { | |
187 | NDTA_UNSPEC, | |
188 | NDTA_NAME, /* char *, unchangeable */ | |
189 | NDTA_THRESH1, /* u32 */ | |
190 | NDTA_THRESH2, /* u32 */ | |
191 | NDTA_THRESH3, /* u32 */ | |
192 | NDTA_CONFIG, /* struct ndt_config, read-only */ | |
193 | NDTA_PARMS, /* nested TLV NDTPA_* */ | |
194 | NDTA_STATS, /* struct ndt_stats, read-only */ | |
195 | NDTA_GC_INTERVAL, /* u64, msecs */ | |
2175d87c | 196 | NDTA_PAD, |
b63bbc50 TG |
197 | __NDTA_MAX |
198 | }; | |
199 | #define NDTA_MAX (__NDTA_MAX - 1) | |
200 | ||
31cbc39b NA |
201 | /* FDB activity notification bits used in NFEA_ACTIVITY_NOTIFY: |
202 | * - FDB_NOTIFY_BIT - notify on activity/expire for any entry | |
203 | * - FDB_NOTIFY_INACTIVE_BIT - mark as inactive to avoid multiple notifications | |
204 | */ | |
205 | enum { | |
206 | FDB_NOTIFY_BIT = (1 << 0), | |
207 | FDB_NOTIFY_INACTIVE_BIT = (1 << 1) | |
208 | }; | |
209 | ||
899426b3 NA |
210 | /* embedded into NDA_FDB_EXT_ATTRS: |
211 | * [NDA_FDB_EXT_ATTRS] = { | |
31cbc39b | 212 | * [NFEA_ACTIVITY_NOTIFY] |
899426b3 NA |
213 | * ... |
214 | * } | |
215 | */ | |
216 | enum { | |
217 | NFEA_UNSPEC, | |
31cbc39b | 218 | NFEA_ACTIVITY_NOTIFY, |
b5f1d9ec | 219 | NFEA_DONT_REFRESH, |
899426b3 NA |
220 | __NFEA_MAX |
221 | }; | |
222 | #define NFEA_MAX (__NFEA_MAX - 1) | |
223 | ||
9067c722 | 224 | #endif |