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authorPablo Neira Ayuso <pablo@netfilter.org>2016-12-05 23:35:49 +0100
committerPablo Neira Ayuso <pablo@netfilter.org>2016-12-07 13:31:02 +0100
commit37df5301a3ae903c5b1aa90cae37c6c669dfc386 (patch)
treedfaf6fdbc51c03f4f788a825d643fa85d7b9a3d2 /net
parent1a37ef769d68d2719a9a418bd80fc42d19259b24 (diff)
downloadlinux-37df5301a3ae903c5b1aa90cae37c6c669dfc386.tar.bz2
netfilter: nft_set: introduce nft_{hash, rbtree}_deactivate_one()
This new function allows us to deactivate one single element, this is required by the set flush command that comes in a follow up patch. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net')
-rw-r--r--net/netfilter/nft_set_hash.c24
-rw-r--r--net/netfilter/nft_set_rbtree.c11
2 files changed, 27 insertions, 8 deletions
diff --git a/net/netfilter/nft_set_hash.c b/net/netfilter/nft_set_hash.c
index a3dface3e6e6..73f7687c5656 100644
--- a/net/netfilter/nft_set_hash.c
+++ b/net/netfilter/nft_set_hash.c
@@ -167,6 +167,19 @@ static void nft_hash_activate(const struct net *net, const struct nft_set *set,
nft_set_elem_clear_busy(&he->ext);
}
+static bool nft_hash_deactivate_one(const struct net *net,
+ const struct nft_set *set, void *priv)
+{
+ struct nft_hash_elem *he = priv;
+
+ if (!nft_set_elem_mark_busy(&he->ext) ||
+ !nft_is_active(net, &he->ext)) {
+ nft_set_elem_change_active(net, set, &he->ext);
+ return true;
+ }
+ return false;
+}
+
static void *nft_hash_deactivate(const struct net *net,
const struct nft_set *set,
const struct nft_set_elem *elem)
@@ -181,13 +194,10 @@ static void *nft_hash_deactivate(const struct net *net,
rcu_read_lock();
he = rhashtable_lookup_fast(&priv->ht, &arg, nft_hash_params);
- if (he != NULL) {
- if (!nft_set_elem_mark_busy(&he->ext) ||
- !nft_is_active(net, &he->ext))
- nft_set_elem_change_active(net, set, &he->ext);
- else
- he = NULL;
- }
+ if (he != NULL &&
+ !nft_hash_deactivate_one(net, set, he))
+ he = NULL;
+
rcu_read_unlock();
return he;
diff --git a/net/netfilter/nft_set_rbtree.c b/net/netfilter/nft_set_rbtree.c
index 36493a7cae88..5580bb64dc0f 100644
--- a/net/netfilter/nft_set_rbtree.c
+++ b/net/netfilter/nft_set_rbtree.c
@@ -171,6 +171,15 @@ static void nft_rbtree_activate(const struct net *net,
nft_set_elem_change_active(net, set, &rbe->ext);
}
+static bool nft_rbtree_deactivate_one(const struct net *net,
+ const struct nft_set *set, void *priv)
+{
+ struct nft_rbtree_elem *rbe = priv;
+
+ nft_set_elem_change_active(net, set, &rbe->ext);
+ return true;
+}
+
static void *nft_rbtree_deactivate(const struct net *net,
const struct nft_set *set,
const struct nft_set_elem *elem)
@@ -204,7 +213,7 @@ static void *nft_rbtree_deactivate(const struct net *net,
parent = parent->rb_right;
continue;
}
- nft_set_elem_change_active(net, set, &rbe->ext);
+ nft_rbtree_deactivate_one(net, set, rbe);
return rbe;
}
}