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
   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_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_SELF        0x02
  39 #define NTF_MASTER      0x04
  40 #define NTF_PROXY       0x08    /* == ATF_PUBL */
  41 #define NTF_EXT_LEARNED 0x10
  42 #define NTF_ROUTER      0x80
  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
  65 struct 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
  97 struct 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
 110 enum {
 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
 132 struct ndtmsg {
 133         __u8            ndtm_family;
 134         __u8            ndtm_pad1;
 135         __u16           ndtm_pad2;
 136 };
 137
 138 struct 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
 150 enum {
 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