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_ROUTER      0x80
  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
  64 struct 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
  96 struct 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
 109 enum {
 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
 131 struct ndtmsg {
 132         __u8            ndtm_family;
 133         __u8            ndtm_pad1;
 134         __u16           ndtm_pad2;
 135 };
 136
 137 struct 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
 149 enum {
 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