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authorPatrick McHardy <kaber@trash.net>2014-03-28 10:19:48 +0000
committerPablo Neira Ayuso <pablo@gnumonks.org>2014-04-02 21:33:55 +0200
commit2c96c25d114083c7661936ad4d27e6a2c46c527d (patch)
tree868f3b36b15fa3647b6743446f1c5256d732c8ba /net/netfilter/nft_hash.c
parentc50b960ccc5981627628302701e93e6aceccdb1c (diff)
downloadlinux-2c96c25d114083c7661936ad4d27e6a2c46c527d.tar.gz
netfilter: nft_hash: use set global element counter instead of private one
Now that nf_tables performs global accounting of set elements, it is not needed in the hash type anymore. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter/nft_hash.c')
-rw-r--r--net/netfilter/nft_hash.c9
1 files changed, 2 insertions, 7 deletions
diff --git a/net/netfilter/nft_hash.c b/net/netfilter/nft_hash.c
index 01884b315c4ab2..1dfeb6786832e8 100644
--- a/net/netfilter/nft_hash.c
+++ b/net/netfilter/nft_hash.c
@@ -28,7 +28,6 @@ struct nft_hash {
struct nft_hash_table {
unsigned int size;
- unsigned int elements;
struct nft_hash_elem __rcu *buckets[];
};
@@ -167,7 +166,6 @@ static int nft_hash_tbl_expand(const struct nft_set *set, struct nft_hash *priv)
break;
}
}
- ntbl->elements = tbl->elements;
/* Publish new table */
rcu_assign_pointer(priv->tbl, ntbl);
@@ -207,7 +205,6 @@ static int nft_hash_tbl_shrink(const struct nft_set *set, struct nft_hash *priv)
;
RCU_INIT_POINTER(*pprev, tbl->buckets[i + ntbl->size]);
}
- ntbl->elements = tbl->elements;
/* Publish new table */
rcu_assign_pointer(priv->tbl, ntbl);
@@ -243,10 +240,9 @@ static int nft_hash_insert(const struct nft_set *set,
h = nft_hash_data(&he->key, tbl->size, set->klen);
RCU_INIT_POINTER(he->next, tbl->buckets[h]);
rcu_assign_pointer(tbl->buckets[h], he);
- tbl->elements++;
/* Expand table when exceeding 75% load */
- if (tbl->elements > tbl->size / 4 * 3)
+ if (set->nelems + 1 > tbl->size / 4 * 3)
nft_hash_tbl_expand(set, priv);
return 0;
@@ -274,10 +270,9 @@ static void nft_hash_remove(const struct nft_set *set,
RCU_INIT_POINTER(*pprev, he->next);
synchronize_rcu();
kfree(he);
- tbl->elements--;
/* Shrink table beneath 30% load */
- if (tbl->elements < tbl->size * 3 / 10 &&
+ if (set->nelems - 1 < tbl->size * 3 / 10 &&
tbl->size > NFT_HASH_MIN_SIZE)
nft_hash_tbl_shrink(set, priv);
}