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