diff options
Diffstat (limited to 'include/linux/netfilter_netdev.h')
-rw-r--r-- | include/linux/netfilter_netdev.h | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/include/linux/netfilter_netdev.h b/include/linux/netfilter_netdev.h deleted file mode 100644 index 92d3611a782e..000000000000 --- a/include/linux/netfilter_netdev.h +++ /dev/null @@ -1,102 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _NETFILTER_NETDEV_H_ -#define _NETFILTER_NETDEV_H_ - -#include <linux/netfilter.h> -#include <linux/netdevice.h> - -#ifdef CONFIG_NETFILTER -static __always_inline bool nf_hook_netdev_active(enum nf_dev_hooks hooknum, - struct nf_hook_entries __rcu *hooks) -{ -#ifdef CONFIG_JUMP_LABEL - if (!static_key_false(&nf_hooks_needed[NFPROTO_NETDEV][hooknum])) - return false; -#endif - return rcu_access_pointer(hooks); -} - -/* caller must hold rcu_read_lock */ -static __always_inline int nf_hook_netdev(struct sk_buff *skb, - enum nf_dev_hooks hooknum, - struct nf_hook_entries __rcu *hooks) -{ - struct nf_hook_entries *e = rcu_dereference(hooks); - struct nf_hook_state state; - int ret; - - /* Must recheck the hook head, in the event it became NULL - * after the check in nf_hook_netdev_active evaluated to true. - */ - if (unlikely(!e)) - return 0; - - nf_hook_state_init(&state, hooknum, - NFPROTO_NETDEV, skb->dev, NULL, NULL, - dev_net(skb->dev), NULL); - ret = nf_hook_slow(skb, &state, e, 0); - if (ret == 0) - return -1; - - return ret; -} -#endif /* CONFIG_NETFILTER */ - -static inline void nf_hook_netdev_init(struct net_device *dev) -{ -#ifdef CONFIG_NETFILTER_INGRESS - RCU_INIT_POINTER(dev->nf_hooks_ingress, NULL); -#endif -#ifdef CONFIG_NETFILTER_EGRESS - RCU_INIT_POINTER(dev->nf_hooks_egress, NULL); -#endif -} - -#ifdef CONFIG_NETFILTER_INGRESS -static inline bool nf_hook_ingress_active(const struct sk_buff *skb) -{ - return nf_hook_netdev_active(NF_NETDEV_INGRESS, - skb->dev->nf_hooks_ingress); -} - -static inline int nf_hook_ingress(struct sk_buff *skb) -{ - return nf_hook_netdev(skb, NF_NETDEV_INGRESS, - skb->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; -} -#endif /* CONFIG_NETFILTER_INGRESS */ - -#ifdef CONFIG_NETFILTER_EGRESS -static inline bool nf_hook_egress_active(const struct sk_buff *skb) -{ - return nf_hook_netdev_active(NF_NETDEV_EGRESS, - skb->dev->nf_hooks_egress); -} - -static inline int nf_hook_egress(struct sk_buff *skb) -{ - return nf_hook_netdev(skb, NF_NETDEV_EGRESS, - skb->dev->nf_hooks_egress); -} -#else /* CONFIG_NETFILTER_EGRESS */ -static inline int nf_hook_egress_active(struct sk_buff *skb) -{ - return 0; -} - -static inline int nf_hook_egress(struct sk_buff *skb) -{ - return 0; -} -#endif /* CONFIG_NETFILTER_EGRESS */ -#endif /* _NETFILTER_INGRESS_H_ */ |