Commit ddcfa710 authored by Pablo Neira Ayuso's avatar Pablo Neira Ayuso
Browse files

netfilter: add nf_ingress_hook() helper function 



Add helper function to check if this is an ingress hook.

Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
parent afd9024c

net/netfilter/core.c

+7 −2
Original line number Diff line number Diff line
@@ -311,6 +311,11 @@ nf_hook_entry_head(struct net *net, int pf, unsigned int hooknum, 
	return NULL;

}



static inline bool nf_ingress_hook(const struct nf_hook_ops *reg, int pf)

{

	return pf == NFPROTO_NETDEV && reg->hooknum == NF_NETDEV_INGRESS;

}



static void nf_static_key_inc(const struct nf_hook_ops *reg, int pf)

{

#ifdef CONFIG_JUMP_LABEL
@@ -359,7 +364,7 @@ static int __nf_register_net_hook(struct net *net, int pf, 


	hooks_validate(new_hooks);

#ifdef CONFIG_NETFILTER_INGRESS

	if (pf == NFPROTO_NETDEV && reg->hooknum == NF_NETDEV_INGRESS)

	if (nf_ingress_hook(reg, pf))

		net_inc_ingress_queue();

#endif

	nf_static_key_inc(reg, pf);
@@ -416,7 +421,7 @@ static void __nf_unregister_net_hook(struct net *net, int pf, 


	if (nf_remove_net_hook(p, reg)) {

#ifdef CONFIG_NETFILTER_INGRESS

		if (pf == NFPROTO_NETDEV && reg->hooknum == NF_NETDEV_INGRESS)

		if (nf_ingress_hook(reg, pf))

			net_dec_ingress_queue();

#endif

		nf_static_key_dec(reg, pf);