neighbour.h revision 30692c65c4174412c90e79489e98ab85c1a7412f
1#ifndef __LINUX_NEIGHBOUR_H 2#define __LINUX_NEIGHBOUR_H 3 4#include <linux/types.h> 5#include <linux/netlink.h> 6 7struct 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 17enum { 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_MAX 28}; 29 30#define NDA_MAX (__NDA_MAX - 1) 31 32/* 33 * Neighbor Cache Entry Flags 34 */ 35 36#define NTF_USE 0x01 37#define NTF_PROXY 0x08 /* == ATF_PUBL */ 38#define NTF_ROUTER 0x80 39 40#define NTF_SELF 0x02 41#define NTF_MASTER 0x04 42 43/* 44 * Neighbor Cache Entry States. 45 */ 46 47#define NUD_INCOMPLETE 0x01 48#define NUD_REACHABLE 0x02 49#define NUD_STALE 0x04 50#define NUD_DELAY 0x08 51#define NUD_PROBE 0x10 52#define NUD_FAILED 0x20 53 54/* Dummy states */ 55#define NUD_NOARP 0x40 56#define NUD_PERMANENT 0x80 57#define NUD_NONE 0x00 58 59/* NUD_NOARP & NUD_PERMANENT are pseudostates, they never change 60 and make no address resolution or NUD. 61 NUD_PERMANENT is also cannot be deleted by garbage collectors. 62 */ 63 64struct nda_cacheinfo { 65 __u32 ndm_confirmed; 66 __u32 ndm_used; 67 __u32 ndm_updated; 68 __u32 ndm_refcnt; 69}; 70 71/***************************************************************** 72 * Neighbour tables specific messages. 73 * 74 * To retrieve the neighbour tables send RTM_GETNEIGHTBL with the 75 * NLM_F_DUMP flag set. Every neighbour table configuration is 76 * spread over multiple messages to avoid running into message 77 * size limits on systems with many interfaces. The first message 78 * in the sequence transports all not device specific data such as 79 * statistics, configuration, and the default parameter set. 80 * This message is followed by 0..n messages carrying device 81 * specific parameter sets. 82 * Although the ordering should be sufficient, NDTA_NAME can be 83 * used to identify sequences. The initial message can be identified 84 * by checking for NDTA_CONFIG. The device specific messages do 85 * not contain this TLV but have NDTPA_IFINDEX set to the 86 * corresponding interface index. 87 * 88 * To change neighbour table attributes, send RTM_SETNEIGHTBL 89 * with NDTA_NAME set. Changeable attribute include NDTA_THRESH[1-3], 90 * NDTA_GC_INTERVAL, and all TLVs in NDTA_PARMS unless marked 91 * otherwise. Device specific parameter sets can be changed by 92 * setting NDTPA_IFINDEX to the interface index of the corresponding 93 * device. 94 ****/ 95 96struct ndt_stats { 97 __u64 ndts_allocs; 98 __u64 ndts_destroys; 99 __u64 ndts_hash_grows; 100 __u64 ndts_res_failed; 101 __u64 ndts_lookups; 102 __u64 ndts_hits; 103 __u64 ndts_rcv_probes_mcast; 104 __u64 ndts_rcv_probes_ucast; 105 __u64 ndts_periodic_gc_runs; 106 __u64 ndts_forced_gc_runs; 107}; 108 109enum { 110 NDTPA_UNSPEC, 111 NDTPA_IFINDEX, /* u32, unchangeable */ 112 NDTPA_REFCNT, /* u32, read-only */ 113 NDTPA_REACHABLE_TIME, /* u64, read-only, msecs */ 114 NDTPA_BASE_REACHABLE_TIME, /* u64, msecs */ 115 NDTPA_RETRANS_TIME, /* u64, msecs */ 116 NDTPA_GC_STALETIME, /* u64, msecs */ 117 NDTPA_DELAY_PROBE_TIME, /* u64, msecs */ 118 NDTPA_QUEUE_LEN, /* u32 */ 119 NDTPA_APP_PROBES, /* u32 */ 120 NDTPA_UCAST_PROBES, /* u32 */ 121 NDTPA_MCAST_PROBES, /* u32 */ 122 NDTPA_ANYCAST_DELAY, /* u64, msecs */ 123 NDTPA_PROXY_DELAY, /* u64, msecs */ 124 NDTPA_PROXY_QLEN, /* u32 */ 125 NDTPA_LOCKTIME, /* u64, msecs */ 126 NDTPA_QUEUE_LENBYTES, /* u32 */ 127 __NDTPA_MAX 128}; 129#define NDTPA_MAX (__NDTPA_MAX - 1) 130 131struct ndtmsg { 132 __u8 ndtm_family; 133 __u8 ndtm_pad1; 134 __u16 ndtm_pad2; 135}; 136 137struct ndt_config { 138 __u16 ndtc_key_len; 139 __u16 ndtc_entry_size; 140 __u32 ndtc_entries; 141 __u32 ndtc_last_flush; /* delta to now in msecs */ 142 __u32 ndtc_last_rand; /* delta to now in msecs */ 143 __u32 ndtc_hash_rnd; 144 __u32 ndtc_hash_mask; 145 __u32 ndtc_hash_chain_gc; 146 __u32 ndtc_proxy_qlen; 147}; 148 149enum { 150 NDTA_UNSPEC, 151 NDTA_NAME, /* char *, unchangeable */ 152 NDTA_THRESH1, /* u32 */ 153 NDTA_THRESH2, /* u32 */ 154 NDTA_THRESH3, /* u32 */ 155 NDTA_CONFIG, /* struct ndt_config, read-only */ 156 NDTA_PARMS, /* nested TLV NDTPA_* */ 157 NDTA_STATS, /* struct ndt_stats, read-only */ 158 NDTA_GC_INTERVAL, /* u64, msecs */ 159 __NDTA_MAX 160}; 161#define NDTA_MAX (__NDTA_MAX - 1) 162 163#endif 164