1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux <<
2 #ifndef __LINUX_NEIGHBOUR_H 1 #ifndef __LINUX_NEIGHBOUR_H
3 #define __LINUX_NEIGHBOUR_H 2 #define __LINUX_NEIGHBOUR_H
4 3
5 #include <linux/types.h> 4 #include <linux/types.h>
6 #include <linux/netlink.h> 5 #include <linux/netlink.h>
7 6
8 struct ndmsg { 7 struct ndmsg {
9 __u8 ndm_family; 8 __u8 ndm_family;
10 __u8 ndm_pad1; 9 __u8 ndm_pad1;
11 __u16 ndm_pad2; 10 __u16 ndm_pad2;
12 __s32 ndm_ifindex; 11 __s32 ndm_ifindex;
13 __u16 ndm_state; 12 __u16 ndm_state;
14 __u8 ndm_flags; 13 __u8 ndm_flags;
15 __u8 ndm_type; 14 __u8 ndm_type;
16 }; 15 };
17 16
18 enum { 17 enum {
19 NDA_UNSPEC, 18 NDA_UNSPEC,
20 NDA_DST, 19 NDA_DST,
21 NDA_LLADDR, 20 NDA_LLADDR,
22 NDA_CACHEINFO, 21 NDA_CACHEINFO,
23 NDA_PROBES, 22 NDA_PROBES,
24 NDA_VLAN, 23 NDA_VLAN,
25 NDA_PORT, 24 NDA_PORT,
26 NDA_VNI, 25 NDA_VNI,
27 NDA_IFINDEX, 26 NDA_IFINDEX,
28 NDA_MASTER, 27 NDA_MASTER,
29 NDA_LINK_NETNSID, 28 NDA_LINK_NETNSID,
30 NDA_SRC_VNI, <<
31 NDA_PROTOCOL, /* Originator of entry <<
32 NDA_NH_ID, <<
33 NDA_FDB_EXT_ATTRS, <<
34 NDA_FLAGS_EXT, <<
35 NDA_NDM_STATE_MASK, <<
36 NDA_NDM_FLAGS_MASK, <<
37 __NDA_MAX 29 __NDA_MAX
38 }; 30 };
39 31
40 #define NDA_MAX (__NDA_MAX - 1) 32 #define NDA_MAX (__NDA_MAX - 1)
41 33
42 /* 34 /*
43 * Neighbor Cache Entry Flags 35 * Neighbor Cache Entry Flags
44 */ 36 */
45 37
46 #define NTF_USE (1 << 0) !! 38 #define NTF_USE 0x01
47 #define NTF_SELF (1 << 1) !! 39 #define NTF_SELF 0x02
48 #define NTF_MASTER (1 << 2) !! 40 #define NTF_MASTER 0x04
49 #define NTF_PROXY (1 << 3) /* == !! 41 #define NTF_PROXY 0x08 /* == ATF_PUBL */
50 #define NTF_EXT_LEARNED (1 << 4) !! 42 #define NTF_EXT_LEARNED 0x10
51 #define NTF_OFFLOADED (1 << 5) !! 43 #define NTF_ROUTER 0x80
52 #define NTF_STICKY (1 << 6) <<
53 #define NTF_ROUTER (1 << 7) <<
54 /* Extended flags under NDA_FLAGS_EXT: */ <<
55 #define NTF_EXT_MANAGED (1 << 0) <<
56 #define NTF_EXT_LOCKED (1 << 1) <<
57 44
58 /* 45 /*
59 * Neighbor Cache Entry States. 46 * Neighbor Cache Entry States.
60 */ 47 */
61 48
62 #define NUD_INCOMPLETE 0x01 49 #define NUD_INCOMPLETE 0x01
63 #define NUD_REACHABLE 0x02 50 #define NUD_REACHABLE 0x02
64 #define NUD_STALE 0x04 51 #define NUD_STALE 0x04
65 #define NUD_DELAY 0x08 52 #define NUD_DELAY 0x08
66 #define NUD_PROBE 0x10 53 #define NUD_PROBE 0x10
67 #define NUD_FAILED 0x20 54 #define NUD_FAILED 0x20
68 55
69 /* Dummy states */ 56 /* Dummy states */
70 #define NUD_NOARP 0x40 57 #define NUD_NOARP 0x40
71 #define NUD_PERMANENT 0x80 58 #define NUD_PERMANENT 0x80
72 #define NUD_NONE 0x00 59 #define NUD_NONE 0x00
73 60
74 /* NUD_NOARP & NUD_PERMANENT are pseudostates, !! 61 /* NUD_NOARP & NUD_PERMANENT are pseudostates, they never change
75 * address resolution or NUD. !! 62 and make no address resolution or NUD.
76 * !! 63 NUD_PERMANENT also cannot be deleted by garbage collectors.
77 * NUD_PERMANENT also cannot be deleted by gar <<
78 * for dynamic entries with NTF_EXT_LEARNED fl <<
79 * down event, NUD_PERMANENT entries are not f <<
80 * flagged entries explicitly are (which is al <<
81 * subsystem). <<
82 * <<
83 * When NTF_EXT_LEARNED is set for a bridge fd <<
84 * states don't make sense and thus are ignore <<
85 * can roam. <<
86 * <<
87 * NTF_EXT_MANAGED flagged neigbor entries are <<
88 * of a user space control plane, and automati <<
89 * possible) they remain in NUD_REACHABLE stat <<
90 * <<
91 * NTF_EXT_LOCKED flagged bridge FDB entries a <<
92 * bridge in response to a host trying to comm <<
93 * with MAB enabled. Their purpose is to notif <<
94 * authentication. <<
95 */ 64 */
96 65
97 struct nda_cacheinfo { 66 struct nda_cacheinfo {
98 __u32 ndm_confirmed; 67 __u32 ndm_confirmed;
99 __u32 ndm_used; 68 __u32 ndm_used;
100 __u32 ndm_updated; 69 __u32 ndm_updated;
101 __u32 ndm_refcnt; 70 __u32 ndm_refcnt;
102 }; 71 };
103 72
104 /********************************************* 73 /*****************************************************************
105 * Neighbour tables specific mess 74 * Neighbour tables specific messages.
106 * 75 *
107 * To retrieve the neighbour tables send RTM_G 76 * To retrieve the neighbour tables send RTM_GETNEIGHTBL with the
108 * NLM_F_DUMP flag set. Every neighbour table 77 * NLM_F_DUMP flag set. Every neighbour table configuration is
109 * spread over multiple messages to avoid runn 78 * spread over multiple messages to avoid running into message
110 * size limits on systems with many interfaces 79 * size limits on systems with many interfaces. The first message
111 * in the sequence transports all not device s 80 * in the sequence transports all not device specific data such as
112 * statistics, configuration, and the default 81 * statistics, configuration, and the default parameter set.
113 * This message is followed by 0..n messages c 82 * This message is followed by 0..n messages carrying device
114 * specific parameter sets. 83 * specific parameter sets.
115 * Although the ordering should be sufficient, 84 * Although the ordering should be sufficient, NDTA_NAME can be
116 * used to identify sequences. The initial mes 85 * used to identify sequences. The initial message can be identified
117 * by checking for NDTA_CONFIG. The device spe 86 * by checking for NDTA_CONFIG. The device specific messages do
118 * not contain this TLV but have NDTPA_IFINDEX 87 * not contain this TLV but have NDTPA_IFINDEX set to the
119 * corresponding interface index. 88 * corresponding interface index.
120 * 89 *
121 * To change neighbour table attributes, send 90 * To change neighbour table attributes, send RTM_SETNEIGHTBL
122 * with NDTA_NAME set. Changeable attribute in 91 * with NDTA_NAME set. Changeable attribute include NDTA_THRESH[1-3],
123 * NDTA_GC_INTERVAL, and all TLVs in NDTA_PARM 92 * NDTA_GC_INTERVAL, and all TLVs in NDTA_PARMS unless marked
124 * otherwise. Device specific parameter sets c 93 * otherwise. Device specific parameter sets can be changed by
125 * setting NDTPA_IFINDEX to the interface inde 94 * setting NDTPA_IFINDEX to the interface index of the corresponding
126 * device. 95 * device.
127 ****/ 96 ****/
128 97
129 struct ndt_stats { 98 struct ndt_stats {
130 __u64 ndts_allocs; 99 __u64 ndts_allocs;
131 __u64 ndts_destroys; 100 __u64 ndts_destroys;
132 __u64 ndts_hash_grows; 101 __u64 ndts_hash_grows;
133 __u64 ndts_res_failed; 102 __u64 ndts_res_failed;
134 __u64 ndts_lookups; 103 __u64 ndts_lookups;
135 __u64 ndts_hits; 104 __u64 ndts_hits;
136 __u64 ndts_rcv_probes_mcast; 105 __u64 ndts_rcv_probes_mcast;
137 __u64 ndts_rcv_probes_ucast; 106 __u64 ndts_rcv_probes_ucast;
138 __u64 ndts_periodic_gc_runs; 107 __u64 ndts_periodic_gc_runs;
139 __u64 ndts_forced_gc_runs; 108 __u64 ndts_forced_gc_runs;
140 __u64 ndts_table_fulls; 109 __u64 ndts_table_fulls;
141 }; 110 };
142 111
143 enum { 112 enum {
144 NDTPA_UNSPEC, 113 NDTPA_UNSPEC,
145 NDTPA_IFINDEX, /* u32 114 NDTPA_IFINDEX, /* u32, unchangeable */
146 NDTPA_REFCNT, /* u32 115 NDTPA_REFCNT, /* u32, read-only */
147 NDTPA_REACHABLE_TIME, /* u64 116 NDTPA_REACHABLE_TIME, /* u64, read-only, msecs */
148 NDTPA_BASE_REACHABLE_TIME, /* u64 117 NDTPA_BASE_REACHABLE_TIME, /* u64, msecs */
149 NDTPA_RETRANS_TIME, /* u64 118 NDTPA_RETRANS_TIME, /* u64, msecs */
150 NDTPA_GC_STALETIME, /* u64 119 NDTPA_GC_STALETIME, /* u64, msecs */
151 NDTPA_DELAY_PROBE_TIME, /* u64 120 NDTPA_DELAY_PROBE_TIME, /* u64, msecs */
152 NDTPA_QUEUE_LEN, /* u32 121 NDTPA_QUEUE_LEN, /* u32 */
153 NDTPA_APP_PROBES, /* u32 122 NDTPA_APP_PROBES, /* u32 */
154 NDTPA_UCAST_PROBES, /* u32 123 NDTPA_UCAST_PROBES, /* u32 */
155 NDTPA_MCAST_PROBES, /* u32 124 NDTPA_MCAST_PROBES, /* u32 */
156 NDTPA_ANYCAST_DELAY, /* u64 125 NDTPA_ANYCAST_DELAY, /* u64, msecs */
157 NDTPA_PROXY_DELAY, /* u64 126 NDTPA_PROXY_DELAY, /* u64, msecs */
158 NDTPA_PROXY_QLEN, /* u32 127 NDTPA_PROXY_QLEN, /* u32 */
159 NDTPA_LOCKTIME, /* u64 128 NDTPA_LOCKTIME, /* u64, msecs */
160 NDTPA_QUEUE_LENBYTES, /* u32 129 NDTPA_QUEUE_LENBYTES, /* u32 */
161 NDTPA_MCAST_REPROBES, /* u32 130 NDTPA_MCAST_REPROBES, /* u32 */
162 NDTPA_PAD, <<
163 NDTPA_INTERVAL_PROBE_TIME_MS, /* u64 <<
164 __NDTPA_MAX 131 __NDTPA_MAX
165 }; 132 };
166 #define NDTPA_MAX (__NDTPA_MAX - 1) 133 #define NDTPA_MAX (__NDTPA_MAX - 1)
167 134
168 struct ndtmsg { 135 struct ndtmsg {
169 __u8 ndtm_family; 136 __u8 ndtm_family;
170 __u8 ndtm_pad1; 137 __u8 ndtm_pad1;
171 __u16 ndtm_pad2; 138 __u16 ndtm_pad2;
172 }; 139 };
173 140
174 struct ndt_config { 141 struct ndt_config {
175 __u16 ndtc_key_len; 142 __u16 ndtc_key_len;
176 __u16 ndtc_entry_size; 143 __u16 ndtc_entry_size;
177 __u32 ndtc_entries; 144 __u32 ndtc_entries;
178 __u32 ndtc_last_flush; 145 __u32 ndtc_last_flush; /* delta to now in msecs */
179 __u32 ndtc_last_rand; 146 __u32 ndtc_last_rand; /* delta to now in msecs */
180 __u32 ndtc_hash_rnd; 147 __u32 ndtc_hash_rnd;
181 __u32 ndtc_hash_mask; 148 __u32 ndtc_hash_mask;
182 __u32 ndtc_hash_chain_gc; 149 __u32 ndtc_hash_chain_gc;
183 __u32 ndtc_proxy_qlen; 150 __u32 ndtc_proxy_qlen;
184 }; 151 };
185 152
186 enum { 153 enum {
187 NDTA_UNSPEC, 154 NDTA_UNSPEC,
188 NDTA_NAME, /* cha 155 NDTA_NAME, /* char *, unchangeable */
189 NDTA_THRESH1, /* u32 156 NDTA_THRESH1, /* u32 */
190 NDTA_THRESH2, /* u32 157 NDTA_THRESH2, /* u32 */
191 NDTA_THRESH3, /* u32 158 NDTA_THRESH3, /* u32 */
192 NDTA_CONFIG, /* str 159 NDTA_CONFIG, /* struct ndt_config, read-only */
193 NDTA_PARMS, /* nes 160 NDTA_PARMS, /* nested TLV NDTPA_* */
194 NDTA_STATS, /* str 161 NDTA_STATS, /* struct ndt_stats, read-only */
195 NDTA_GC_INTERVAL, /* u64 162 NDTA_GC_INTERVAL, /* u64, msecs */
196 NDTA_PAD, <<
197 __NDTA_MAX 163 __NDTA_MAX
198 }; 164 };
199 #define NDTA_MAX (__NDTA_MAX - 1) 165 #define NDTA_MAX (__NDTA_MAX - 1)
200 <<
201 /* FDB activity notification bits used in NFE <<
202 * - FDB_NOTIFY_BIT - notify on activity/expi <<
203 * - FDB_NOTIFY_INACTIVE_BIT - mark as inacti <<
204 */ <<
205 enum { <<
206 FDB_NOTIFY_BIT = (1 << 0), <<
207 FDB_NOTIFY_INACTIVE_BIT = (1 << 1) <<
208 }; <<
209 <<
210 /* embedded into NDA_FDB_EXT_ATTRS: <<
211 * [NDA_FDB_EXT_ATTRS] = { <<
212 * [NFEA_ACTIVITY_NOTIFY] <<
213 * ... <<
214 * } <<
215 */ <<
216 enum { <<
217 NFEA_UNSPEC, <<
218 NFEA_ACTIVITY_NOTIFY, <<
219 NFEA_DONT_REFRESH, <<
220 __NFEA_MAX <<
221 }; <<
222 #define NFEA_MAX (__NFEA_MAX - 1) <<
223 166
224 #endif 167 #endif
225 168
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