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