[NEIGH]: Move netlink neighbour table bits to linux/neighbour.h

rtnetlink_rcv_msg() is not longer required to parse attributes
for the neighbour tables layer, remove dependency on obsolete and
buggy rta_buf.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 94 insertions, 0 deletions

diff --git a/include/linux/neighbour.h b/include/linux/neighbour.h
index 8e8293d86fbb..bd3bbf668cdb 100644
--- a/include/linux/neighbour.h
+++ b/include/linux/neighbour.h
@@ -62,4 +62,98 @@ struct nda_cacheinfo
         __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_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