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