b4865988ea
The input and output interfaces in nf_hook_state_init() are flipped. This fixes iif matching on nftables. Reported-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
#ifndef _NETFILTER_INGRESS_H_
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#define _NETFILTER_INGRESS_H_
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#include <linux/netfilter.h>
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#include <linux/netdevice.h>
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#ifdef CONFIG_NETFILTER_INGRESS
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static inline bool nf_hook_ingress_active(const struct sk_buff *skb)
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{
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#ifdef HAVE_JUMP_LABEL
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if (!static_key_false(&nf_hooks_needed[NFPROTO_NETDEV][NF_NETDEV_INGRESS]))
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return false;
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#endif
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return !list_empty(&skb->dev->nf_hooks_ingress);
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}
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static inline int nf_hook_ingress(struct sk_buff *skb)
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{
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struct nf_hook_state state;
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nf_hook_state_init(&state, &skb->dev->nf_hooks_ingress,
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NF_NETDEV_INGRESS, INT_MIN, NFPROTO_NETDEV,
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skb->dev, NULL, NULL, dev_net(skb->dev), NULL);
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return nf_hook_slow(skb, &state);
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}
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static inline void nf_hook_ingress_init(struct net_device *dev)
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{
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INIT_LIST_HEAD(&dev->nf_hooks_ingress);
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}
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#else /* CONFIG_NETFILTER_INGRESS */
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static inline int nf_hook_ingress_active(struct sk_buff *skb)
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{
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return 0;
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}
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static inline int nf_hook_ingress(struct sk_buff *skb)
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{
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return 0;
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}
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static inline void nf_hook_ingress_init(struct net_device *dev) {}
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#endif /* CONFIG_NETFILTER_INGRESS */
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#endif /* _NETFILTER_INGRESS_H_ */
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