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authorDavid Miller <davem@davemloft.net>2011-07-25 02:01:17 +0200
committerDavid S. Miller <davem@davemloft.net>2011-12-01 00:46:43 +0100
commit1026fec8739663621d64216ba939c23bc1d089b7 (patch)
treed8ba40edf7952d1c2fa2b832fdfceeb537fcb145 /include/net/neighbour.h
parentsfc: fix race in efx_enqueue_skb_tso() (diff)
downloadlinux-1026fec8739663621d64216ba939c23bc1d089b7.tar.xz
linux-1026fec8739663621d64216ba939c23bc1d089b7.zip
neigh: Create mechanism for generic neigh private areas.
The implementation private sits right after the primary_key memory. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
-rw-r--r--include/net/neighbour.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index 7ae5acff96e9..87c0e5ce6492 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -179,6 +179,13 @@ struct neigh_table {
struct pneigh_entry **phash_buckets;
};
+#define NEIGH_PRIV_ALIGN sizeof(long long)
+
+static inline void *neighbour_priv(const struct neighbour *n)
+{
+ return (char *)n + ALIGN(sizeof(*n) + n->tbl->key_len, NEIGH_PRIV_ALIGN);
+}
+
/* flags for neigh_update() */
#define NEIGH_UPDATE_F_OVERRIDE 0x00000001
#define NEIGH_UPDATE_F_WEAK_OVERRIDE 0x00000002