include/linux/netfilter_ipv6.h

   1 /* IPv6-specific defines for netfilter.
   2  * (C)1998 Rusty Russell -- This code is GPL.
   3  * (C)1999 David Jeffery
   4  *   this header was blatantly ripped from netfilter_ipv4.h
   5  *   it's amazing what adding a bunch of 6s can do =8^)
   6  */
   7 #ifndef __LINUX_IP6_NETFILTER_H
   8 #define __LINUX_IP6_NETFILTER_H
   9
  10 #include <uapi/linux/netfilter_ipv6.h>
  11
  12 /*
  13  * Hook functions for ipv6 to allow xt_* modules to be built-in even
  14  * if IPv6 is a module.
  15  */
  16 struct nf_ipv6_ops {
  17         int (*chk_addr)(struct net *net, const struct in6_addr *addr,
  18                         const struct net_device *dev, int strict);
  19         void (*route_input)(struct sk_buff *skb);
  20         int (*fragment)(struct net *net, struct sock *sk, struct sk_buff *skb,
  21                         int (*output)(struct net *, struct sock *, struct sk_buff *));
  22 };
  23
  24 #ifdef CONFIG_NETFILTER
  25 int ip6_route_me_harder(struct net *net, struct sk_buff *skb);
  26 __sum16 nf_ip6_checksum(struct sk_buff *skb, unsigned int hook,
  27                         unsigned int dataoff, u_int8_t protocol);
  28
  29 int ipv6_netfilter_init(void);
  30 void ipv6_netfilter_fini(void);
  31
  32 extern const struct nf_ipv6_ops __rcu *nf_ipv6_ops;
  33 static inline const struct nf_ipv6_ops *nf_get_ipv6_ops(void)
  34 {
  35         return rcu_dereference(nf_ipv6_ops);
  36 }
  37
  38 #else /* CONFIG_NETFILTER */
  39 static inline int ipv6_netfilter_init(void) { return 0; }
  40 static inline void ipv6_netfilter_fini(void) { return; }
  41 static inline const struct nf_ipv6_ops *nf_get_ipv6_ops(void) { return NULL; }
  42 #endif /* CONFIG_NETFILTER */
  43
  44 #endif /*__LINUX_IP6_NETFILTER_H*/