include/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_LINK_NETNSID,
  29         NDA_SRC_VNI,
  30         __NDA_MAX
  31 };
  32
  33 #define NDA_MAX (__NDA_MAX - 1)
  34
  35 /*
  36  *      Neighbor Cache Entry Flags
  37  */
  38
  39 #define NTF_USE         0x01
  40 #define NTF_SELF        0x02
  41 #define NTF_MASTER      0x04
  42 #define NTF_PROXY       0x08    /* == ATF_PUBL */
  43 #define NTF_EXT_LEARNED 0x10
  44 #define NTF_OFFLOADED   0x20
  45 #define NTF_ROUTER      0x80
  46
  47 /*
  48  *      Neighbor Cache Entry States.
  49  */
  50
  51 #define NUD_INCOMPLETE  0x01
  52 #define NUD_REACHABLE   0x02
  53 #define NUD_STALE       0x04
  54 #define NUD_DELAY       0x08
  55 #define NUD_PROBE       0x10
  56 #define NUD_FAILED      0x20
  57
  58 /* Dummy states */
  59 #define NUD_NOARP       0x40
  60 #define NUD_PERMANENT   0x80
  61 #define NUD_NONE        0x00
  62
  63 /* NUD_NOARP & NUD_PERMANENT are pseudostates, they never change
  64    and make no address resolution or NUD.
  65    NUD_PERMANENT also cannot be deleted by garbage collectors.
  66  */
  67
  68 struct nda_cacheinfo {
  69         __u32           ndm_confirmed;
  70         __u32           ndm_used;
  71         __u32           ndm_updated;
  72         __u32           ndm_refcnt;
  73 };
  74
  75 /*****************************************************************
  76  *              Neighbour tables specific messages.
  77  *
  78  * To retrieve the neighbour tables send RTM_GETNEIGHTBL with the
  79  * NLM_F_DUMP flag set. Every neighbour table configuration is
  80  * spread over multiple messages to avoid running into message
  81  * size limits on systems with many interfaces. The first message
  82  * in the sequence transports all not device specific data such as
  83  * statistics, configuration, and the default parameter set.
  84  * This message is followed by 0..n messages carrying device
  85  * specific parameter sets.
  86  * Although the ordering should be sufficient, NDTA_NAME can be
  87  * used to identify sequences. The initial message can be identified
  88  * by checking for NDTA_CONFIG. The device specific messages do
  89  * not contain this TLV but have NDTPA_IFINDEX set to the
  90  * corresponding interface index.
  91  *
  92  * To change neighbour table attributes, send RTM_SETNEIGHTBL
  93  * with NDTA_NAME set. Changeable attribute include NDTA_THRESH[1-3],
  94  * NDTA_GC_INTERVAL, and all TLVs in NDTA_PARMS unless marked
  95  * otherwise. Device specific parameter sets can be changed by
  96  * setting NDTPA_IFINDEX to the interface index of the corresponding
  97  * device.
  98  ****/
  99
 100 struct ndt_stats {
 101         __u64           ndts_allocs;
 102         __u64           ndts_destroys;
 103         __u64           ndts_hash_grows;
 104         __u64           ndts_res_failed;
 105         __u64           ndts_lookups;
 106         __u64           ndts_hits;
 107         __u64           ndts_rcv_probes_mcast;
 108         __u64           ndts_rcv_probes_ucast;
 109         __u64           ndts_periodic_gc_runs;
 110         __u64           ndts_forced_gc_runs;
 111         __u64           ndts_table_fulls;
 112 };
 113
 114 enum {
 115         NDTPA_UNSPEC,
 116         NDTPA_IFINDEX,                  /* u32, unchangeable */
 117         NDTPA_REFCNT,                   /* u32, read-only */
 118         NDTPA_REACHABLE_TIME,           /* u64, read-only, msecs */
 119         NDTPA_BASE_REACHABLE_TIME,      /* u64, msecs */
 120         NDTPA_RETRANS_TIME,             /* u64, msecs */
 121         NDTPA_GC_STALETIME,             /* u64, msecs */
 122         NDTPA_DELAY_PROBE_TIME,         /* u64, msecs */
 123         NDTPA_QUEUE_LEN,                /* u32 */
 124         NDTPA_APP_PROBES,               /* u32 */
 125         NDTPA_UCAST_PROBES,             /* u32 */
 126         NDTPA_MCAST_PROBES,             /* u32 */
 127         NDTPA_ANYCAST_DELAY,            /* u64, msecs */
 128         NDTPA_PROXY_DELAY,              /* u64, msecs */
 129         NDTPA_PROXY_QLEN,               /* u32 */
 130         NDTPA_LOCKTIME,                 /* u64, msecs */
 131         NDTPA_QUEUE_LENBYTES,           /* u32 */
 132         NDTPA_MCAST_REPROBES,           /* u32 */
 133         NDTPA_PAD,
 134         __NDTPA_MAX
 135 };
 136 #define NDTPA_MAX (__NDTPA_MAX - 1)
 137
 138 struct ndtmsg {
 139         __u8            ndtm_family;
 140         __u8            ndtm_pad1;
 141         __u16           ndtm_pad2;
 142 };
 143
 144 struct ndt_config {
 145         __u16           ndtc_key_len;
 146         __u16           ndtc_entry_size;
 147         __u32           ndtc_entries;
 148         __u32           ndtc_last_flush;        /* delta to now in msecs */
 149         __u32           ndtc_last_rand;         /* delta to now in msecs */
 150         __u32           ndtc_hash_rnd;
 151         __u32           ndtc_hash_mask;
 152         __u32           ndtc_hash_chain_gc;
 153         __u32           ndtc_proxy_qlen;
 154 };
 155
 156 enum {
 157         NDTA_UNSPEC,
 158         NDTA_NAME,                      /* char *, unchangeable */
 159         NDTA_THRESH1,                   /* u32 */
 160         NDTA_THRESH2,                   /* u32 */
 161         NDTA_THRESH3,                   /* u32 */
 162         NDTA_CONFIG,                    /* struct ndt_config, read-only */
 163         NDTA_PARMS,                     /* nested TLV NDTPA_* */
 164         NDTA_STATS,                     /* struct ndt_stats, read-only */
 165         NDTA_GC_INTERVAL,               /* u64, msecs */
 166         NDTA_PAD,
 167         __NDTA_MAX
 168 };
 169 #define NDTA_MAX (__NDTA_MAX - 1)
 170
 171 #endif