kernel/include/net/netfilter/br_netfilter.h

   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_ */