From 596b9b68ef118f7409afbc78487263e08ef96261 Mon Sep 17 00:00:00 2001 From: David Miller Date: Mon, 25 Jul 2011 00:01:25 +0000 Subject: neigh: Add infrastructure for allocating device neigh privates. netdev->neigh_priv_len records the private area length. This will trigger for neigh_table objects which set tbl->entry_size to zero, and the first instances of this will be forthcoming. Signed-off-by: David S. Miller --- net/core/neighbour.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) (limited to 'net/core/neighbour.c') diff --git a/net/core/neighbour.c b/net/core/neighbour.c index 661ad12e0cc9..ef750ff7497e 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -273,7 +273,7 @@ int neigh_ifdown(struct neigh_table *tbl, struct net_device *dev) } EXPORT_SYMBOL(neigh_ifdown); -static struct neighbour *neigh_alloc(struct neigh_table *tbl) +static struct neighbour *neigh_alloc(struct neigh_table *tbl, struct net_device *dev) { struct neighbour *n = NULL; unsigned long now = jiffies; @@ -288,7 +288,15 @@ static struct neighbour *neigh_alloc(struct neigh_table *tbl) goto out_entries; } - n = kzalloc(tbl->entry_size, GFP_ATOMIC); + if (tbl->entry_size) + n = kzalloc(tbl->entry_size, GFP_ATOMIC); + else { + int sz = sizeof(*n) + tbl->key_len; + + sz = ALIGN(sz, NEIGH_PRIV_ALIGN); + sz += dev->neigh_priv_len; + n = kzalloc(sz, GFP_ATOMIC); + } if (!n) goto out_entries; @@ -463,7 +471,7 @@ struct neighbour *neigh_create(struct neigh_table *tbl, const void *pkey, u32 hash_val; int key_len = tbl->key_len; int error; - struct neighbour *n1, *rc, *n = neigh_alloc(tbl); + struct neighbour *n1, *rc, *n = neigh_alloc(tbl, dev); struct neigh_hash_table *nht; if (!n) { -- cgit v1.2.3-55-g7522