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Linux/include/net/netfilter/br_netfilter.h

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  1 #ifndef _BR_NETFILTER_H_
  2 #define _BR_NETFILTER_H_
  3 
  4 #include "../../../net/bridge/br_private.h"
  5 
  6 static inline struct nf_bridge_info *nf_bridge_alloc(struct sk_buff *skb)
  7 {
  8         skb->nf_bridge = kzalloc(sizeof(struct nf_bridge_info), GFP_ATOMIC);
  9 
 10         if (likely(skb->nf_bridge))
 11                 atomic_set(&(skb->nf_bridge->use), 1);
 12 
 13         return skb->nf_bridge;
 14 }
 15 
 16 void nf_bridge_update_protocol(struct sk_buff *skb);
 17 
 18 static inline struct nf_bridge_info *
 19 nf_bridge_info_get(const struct sk_buff *skb)
 20 {
 21         return skb->nf_bridge;
 22 }
 23 
 24 unsigned int nf_bridge_encap_header_len(const struct sk_buff *skb);
 25 
 26 static inline void nf_bridge_push_encap_header(struct sk_buff *skb)
 27 {
 28         unsigned int len = nf_bridge_encap_header_len(skb);
 29 
 30         skb_push(skb, len);
 31         skb->network_header -= len;
 32 }
 33 
 34 int br_nf_pre_routing_finish_bridge(struct net *net, struct sock *sk, struct sk_buff *skb);
 35 
 36 static inline struct rtable *bridge_parent_rtable(const struct net_device *dev)
 37 {
 38         struct net_bridge_port *port;
 39 
 40         port = br_port_get_rcu(dev);
 41         return port ? &port->br->fake_rtable : NULL;
 42 }
 43 
 44 struct net_device *setup_pre_routing(struct sk_buff *skb);
 45 void br_netfilter_enable(void);
 46 
 47 #if IS_ENABLED(CONFIG_IPV6)
 48 int br_validate_ipv6(struct net *net, struct sk_buff *skb);
 49 unsigned int br_nf_pre_routing_ipv6(void *priv,
 50                                     struct sk_buff *skb,
 51                                     const struct nf_hook_state *state);
 52 #else
 53 static inline int br_validate_ipv6(struct net *net, struct sk_buff *skb)
 54 {
 55         return -1;
 56 }
 57 
 58 static inline unsigned int
 59 br_nf_pre_routing_ipv6(const struct nf_hook_ops *ops, struct sk_buff *skb,
 60                        const struct nf_hook_state *state)
 61 {
 62         return NF_ACCEPT;
 63 }
 64 #endif
 65 
 66 #endif /* _BR_NETFILTER_H_ */
 67 

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