diff options
Diffstat (limited to 'kernel/include/linux/netfilter_ingress.h')
| -rw-r--r-- | kernel/include/linux/netfilter_ingress.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/kernel/include/linux/netfilter_ingress.h b/kernel/include/linux/netfilter_ingress.h new file mode 100644 index 000000000..5fcd375ef --- /dev/null +++ b/kernel/include/linux/netfilter_ingress.h @@ -0,0 +1,44 @@ +#ifndef _NETFILTER_INGRESS_H_ +#define _NETFILTER_INGRESS_H_ + +#include <linux/netfilter.h> +#include <linux/netdevice.h> + +#ifdef CONFIG_NETFILTER_INGRESS +static inline bool nf_hook_ingress_active(const struct sk_buff *skb) +{ +#ifdef HAVE_JUMP_LABEL + if (!static_key_false(&nf_hooks_needed[NFPROTO_NETDEV][NF_NETDEV_INGRESS])) + return false; +#endif + return !list_empty(&skb->dev->nf_hooks_ingress); +} + +static inline int nf_hook_ingress(struct sk_buff *skb) +{ + struct nf_hook_state state; + + nf_hook_state_init(&state, &skb->dev->nf_hooks_ingress, + NF_NETDEV_INGRESS, INT_MIN, NFPROTO_NETDEV, + skb->dev, NULL, NULL, dev_net(skb->dev), NULL); + return nf_hook_slow(skb, &state); +} + +static inline void nf_hook_ingress_init(struct net_device *dev) +{ + INIT_LIST_HEAD(&dev->nf_hooks_ingress); +} +#else /* CONFIG_NETFILTER_INGRESS */ +static inline int nf_hook_ingress_active(struct sk_buff *skb) +{ + return 0; +} + +static inline int nf_hook_ingress(struct sk_buff *skb) +{ + return 0; +} + +static inline void nf_hook_ingress_init(struct net_device *dev) {} +#endif /* CONFIG_NETFILTER_INGRESS */ +#endif /* _NETFILTER_INGRESS_H_ */ |