LXR linux/include/uapi/linux/neighbour.h

   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 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