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#ifndef __LINUX_NEIGHBOUR_H

#define __LINUX_NEIGHBOUR_H

#include <linux/types.h>

#include <linux/netlink.h>

struct ndmsg {

        __u8            ndm_family;

        __u8            ndm_pad1;

        __u16           ndm_pad2;

        __s32           ndm_ifindex;

        __u16           ndm_state;

        __u8            ndm_flags;

        __u8            ndm_type;

};

enum {

        NDA_UNSPEC,

        NDA_DST,

        NDA_LLADDR,

        NDA_CACHEINFO,

        NDA_PROBES,

        NDA_VLAN,

        NDA_PORT,

        NDA_VNI,

        NDA_IFINDEX,

        __NDA_MAX

};

#define NDA_MAX (__NDA_MAX - 1)

/*

 *      Neighbor Cache Entry Flags

 */

#define NTF_USE         0x01

#define NTF_PROXY       0x08    /* == ATF_PUBL */

#define NTF_ROUTER      0x80

#define NTF_SELF        0x02

#define NTF_MASTER      0x04

/*

 *      Neighbor Cache Entry States.

 */

#define NUD_INCOMPLETE  0x01

#define NUD_REACHABLE   0x02

#define NUD_STALE       0x04

#define NUD_DELAY       0x08

#define NUD_PROBE       0x10

#define NUD_FAILED      0x20

/* Dummy states */

#define NUD_NOARP       0x40

#define NUD_PERMANENT   0x80

#define NUD_NONE        0x00

/* NUD_NOARP & NUD_PERMANENT are pseudostates, they never change

   and make no address resolution or NUD.

   NUD_PERMANENT also cannot be deleted by garbage collectors.

 */

struct nda_cacheinfo {

        __u32           ndm_confirmed;

        __u32           ndm_used;

        __u32           ndm_updated;

        __u32           ndm_refcnt;

};

/*****************************************************************

 *              Neighbour tables specific messages.

 *

 * To retrieve the neighbour tables send RTM_GETNEIGHTBL with the

 * NLM_F_DUMP flag set. Every neighbour table configuration is

 * spread over multiple messages to avoid running into message

 * size limits on systems with many interfaces. The first message

 * in the sequence transports all not device specific data such as

 * statistics, configuration, and the default parameter set.

 * This message is followed by 0..n messages carrying device

 * specific parameter sets.

 * Although the ordering should be sufficient, NDTA_NAME can be

 * used to identify sequences. The initial message can be identified

 * by checking for NDTA_CONFIG. The device specific messages do

 * not contain this TLV but have NDTPA_IFINDEX set to the

 * corresponding interface index.

 *

 * To change neighbour table attributes, send RTM_SETNEIGHTBL

 * with NDTA_NAME set. Changeable attribute include NDTA_THRESH[1-3],

 * NDTA_GC_INTERVAL, and all TLVs in NDTA_PARMS unless marked

 * otherwise. Device specific parameter sets can be changed by

 * setting NDTPA_IFINDEX to the interface index of the corresponding

 * device.

 ****/

struct ndt_stats {

        __u64           ndts_allocs;

        __u64           ndts_destroys;

        __u64           ndts_hash_grows;

        __u64           ndts_res_failed;

        __u64           ndts_lookups;

        __u64           ndts_hits;

        __u64           ndts_rcv_probes_mcast;

        __u64           ndts_rcv_probes_ucast;

        __u64           ndts_periodic_gc_runs;

        __u64           ndts_forced_gc_runs;

};

enum {

        NDTPA_UNSPEC,

        NDTPA_IFINDEX,                  /* u32, unchangeable */

        NDTPA_REFCNT,                   /* u32, read-only */

        NDTPA_REACHABLE_TIME,           /* u64, read-only, msecs */

        NDTPA_BASE_REACHABLE_TIME,      /* u64, msecs */

        NDTPA_RETRANS_TIME,             /* u64, msecs */

        NDTPA_GC_STALETIME,             /* u64, msecs */

        NDTPA_DELAY_PROBE_TIME,         /* u64, msecs */

        NDTPA_QUEUE_LEN,                /* u32 */

        NDTPA_APP_PROBES,               /* u32 */

        NDTPA_UCAST_PROBES,             /* u32 */

        NDTPA_MCAST_PROBES,             /* u32 */

        NDTPA_ANYCAST_DELAY,            /* u64, msecs */

        NDTPA_PROXY_DELAY,              /* u64, msecs */

        NDTPA_PROXY_QLEN,               /* u32 */

        NDTPA_LOCKTIME,                 /* u64, msecs */

        NDTPA_QUEUE_LENBYTES,           /* u32 */

        __NDTPA_MAX

};

#define NDTPA_MAX (__NDTPA_MAX - 1)

struct ndtmsg {

        __u8            ndtm_family;

        __u8            ndtm_pad1;

        __u16           ndtm_pad2;

};

struct ndt_config {

        __u16           ndtc_key_len;

        __u16           ndtc_entry_size;

        __u32           ndtc_entries;

        __u32           ndtc_last_flush;        /* delta to now in msecs */

        __u32           ndtc_last_rand;         /* delta to now in msecs */

        __u32           ndtc_hash_rnd;

        __u32           ndtc_hash_mask;

        __u32           ndtc_hash_chain_gc;

        __u32           ndtc_proxy_qlen;

};

enum {

        NDTA_UNSPEC,

        NDTA_NAME,                      /* char *, unchangeable */

        NDTA_THRESH1,                   /* u32 */

        NDTA_THRESH2,                   /* u32 */

        NDTA_THRESH3,                   /* u32 */

        NDTA_CONFIG,                    /* struct ndt_config, read-only */

        NDTA_PARMS,                     /* nested TLV NDTPA_* */

        NDTA_STATS,                     /* struct ndt_stats, read-only */

        NDTA_GC_INTERVAL,               /* u64, msecs */

        __NDTA_MAX

};

#define NDTA_MAX (__NDTA_MAX - 1)

#endif