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