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_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
  65struct 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
  97struct 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
 110enum {
 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
 132struct ndtmsg {
 133        __u8            ndtm_family;
 134        __u8            ndtm_pad1;
 135        __u16           ndtm_pad2;
 136};
 137
 138struct 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
 150enum {
 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