From c5136b15ea364124299c8a9ba96b300e96061e3a Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Wed, 21 Sep 2016 11:35:01 -0400 Subject: netfilter: bridge: add and use br_nf_hook_thresh This replaces the last uses of NF_HOOK_THRESH(). Followup patch will remove it and rename nf_hook_thresh. The reason is that inet (non-bridge) netfilter no longer invokes the hooks from hooks, so we do no longer need the thresh value to skip hooks with a lower priority. The bridge netfilter however may need to do this. br_nf_hook_thresh is a wrapper that is supposed to do this, i.e. only call hooks with a priority that exceeds NF_BR_PRI_BRNF. It's used only in the recursion cases of br_netfilter. It invokes nf_hook_slow while holding an rcu read-side critical section to make a future cleanup simpler. Signed-off-by: Florian Westphal Signed-off-by: Aaron Conole Signed-off-by: Pablo Neira Ayuso --- include/net/netfilter/br_netfilter.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include') diff --git a/include/net/netfilter/br_netfilter.h b/include/net/netfilter/br_netfilter.h index e8d1448425a7..0b0c35c37125 100644 --- a/include/net/netfilter/br_netfilter.h +++ b/include/net/netfilter/br_netfilter.h @@ -15,6 +15,12 @@ static inline struct nf_bridge_info *nf_bridge_alloc(struct sk_buff *skb) void nf_bridge_update_protocol(struct sk_buff *skb); +int br_nf_hook_thresh(unsigned int hook, struct net *net, struct sock *sk, + struct sk_buff *skb, struct net_device *indev, + struct net_device *outdev, + int (*okfn)(struct net *, struct sock *, + struct sk_buff *)); + static inline struct nf_bridge_info * nf_bridge_info_get(const struct sk_buff *skb) { -- cgit v1.2.3