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authorPatrick McHardy <kaber@trash.net>2015-04-11 10:46:40 +0100
committerPablo Neira Ayuso <pablo@netfilter.org>2015-04-13 20:12:31 +0200
commit151d799a61da1b6f6b7e5116fb776177917bbe9a (patch)
treec9080e0cc8e06e85c42cd5948b7bce4de9cf35b8 /net
parentf25ad2e907f110378159fe5e088aa13176faaa5b (diff)
downloadlinux-151d799a61da1b6f6b7e5116fb776177917bbe9a.tar.bz2
netfilter: nf_tables: mark stateful expressions
Add a flag to mark stateful expressions. This is used for dynamic expression instanstiation to limit the usable expressions. Strictly speaking only the dynset expression can not be used in order to avoid recursion, but since dynamically instantiating non-stateful expressions will simply create an identical copy, which behaves no differently than the original, this limits to expressions where it actually makes sense to dynamically instantiate them. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net')
-rw-r--r--net/netfilter/nft_counter.c1
-rw-r--r--net/netfilter/nft_limit.c1
2 files changed, 2 insertions, 0 deletions
diff --git a/net/netfilter/nft_counter.c b/net/netfilter/nft_counter.c
index 0f6367e3e540..17591239229f 100644
--- a/net/netfilter/nft_counter.c
+++ b/net/netfilter/nft_counter.c
@@ -92,6 +92,7 @@ static struct nft_expr_type nft_counter_type __read_mostly = {
.ops = &nft_counter_ops,
.policy = nft_counter_policy,
.maxattr = NFTA_COUNTER_MAX,
+ .flags = NFT_EXPR_STATEFUL,
.owner = THIS_MODULE,
};
diff --git a/net/netfilter/nft_limit.c b/net/netfilter/nft_limit.c
index c8620456afd8..435c1ccd6c0e 100644
--- a/net/netfilter/nft_limit.c
+++ b/net/netfilter/nft_limit.c
@@ -98,6 +98,7 @@ static struct nft_expr_type nft_limit_type __read_mostly = {
.ops = &nft_limit_ops,
.policy = nft_limit_policy,
.maxattr = NFTA_LIMIT_MAX,
+ .flags = NFT_EXPR_STATEFUL,
.owner = THIS_MODULE,
};