include/linux/netfilter_ingress.h

   1 #ifndef _NETFILTER_INGRESS_H_
   2 #define _NETFILTER_INGRESS_H_
   3
   4 #include <linux/netfilter.h>
   5 #include <linux/netdevice.h>
   6
   7 #ifdef CONFIG_NETFILTER_INGRESS
   8 static inline int nf_hook_ingress_active(struct sk_buff *skb)
   9 {
  10         return nf_hook_list_active(&skb->dev->nf_hooks_ingress,
  11                                    NFPROTO_NETDEV, NF_NETDEV_INGRESS);
  12 }
  13
  14 static inline int nf_hook_ingress(struct sk_buff *skb)
  15 {
  16         struct nf_hook_state state;
  17
  18         nf_hook_state_init(&state, &skb->dev->nf_hooks_ingress,
  19                            NF_NETDEV_INGRESS, INT_MIN, NFPROTO_NETDEV, NULL,
  20                            skb->dev, NULL, dev_net(skb->dev), NULL);
  21         return nf_hook_slow(skb, &state);
  22 }
  23
  24 static inline void nf_hook_ingress_init(struct net_device *dev)
  25 {
  26         INIT_LIST_HEAD(&dev->nf_hooks_ingress);
  27 }
  28 #else /* CONFIG_NETFILTER_INGRESS */
  29 static inline int nf_hook_ingress_active(struct sk_buff *skb)
  30 {
  31         return 0;
  32 }
  33
  34 static inline int nf_hook_ingress(struct sk_buff *skb)
  35 {
  36         return 0;
  37 }
  38
  39 static inline void nf_hook_ingress_init(struct net_device *dev) {}
  40 #endif /* CONFIG_NETFILTER_INGRESS */
  41 #endif /* _NETFILTER_INGRESS_H_ */