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Linux/include/linux/netfilter_ipv6.h

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  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 /* Extra routing may needed on local out, as the QUEUE target never returns
 13  * control to the table.
 14  */
 15 struct ip6_rt_info {
 16         struct in6_addr daddr;
 17         struct in6_addr saddr;
 18         u_int32_t mark;
 19 };
 20 
 21 struct nf_queue_entry;
 22 
 23 /*
 24  * Hook functions for ipv6 to allow xt_* modules to be built-in even
 25  * if IPv6 is a module.
 26  */
 27 struct nf_ipv6_ops {
 28         int (*chk_addr)(struct net *net, const struct in6_addr *addr,
 29                         const struct net_device *dev, int strict);
 30         void (*route_input)(struct sk_buff *skb);
 31         int (*fragment)(struct net *net, struct sock *sk, struct sk_buff *skb,
 32                         int (*output)(struct net *, struct sock *, struct sk_buff *));
 33         int (*route)(struct net *net, struct dst_entry **dst, struct flowi *fl,
 34                      bool strict);
 35         int (*reroute)(struct sk_buff *skb, const struct nf_queue_entry *entry);
 36 };
 37 
 38 #ifdef CONFIG_NETFILTER
 39 int ip6_route_me_harder(struct net *net, struct sk_buff *skb);
 40 __sum16 nf_ip6_checksum(struct sk_buff *skb, unsigned int hook,
 41                         unsigned int dataoff, u_int8_t protocol);
 42 
 43 int ipv6_netfilter_init(void);
 44 void ipv6_netfilter_fini(void);
 45 
 46 extern const struct nf_ipv6_ops __rcu *nf_ipv6_ops;
 47 static inline const struct nf_ipv6_ops *nf_get_ipv6_ops(void)
 48 {
 49         return rcu_dereference(nf_ipv6_ops);
 50 }
 51 
 52 #else /* CONFIG_NETFILTER */
 53 static inline int ipv6_netfilter_init(void) { return 0; }
 54 static inline void ipv6_netfilter_fini(void) { return; }
 55 static inline const struct nf_ipv6_ops *nf_get_ipv6_ops(void) { return NULL; }
 56 #endif /* CONFIG_NETFILTER */
 57 
 58 #endif /*__LINUX_IP6_NETFILTER_H*/
 59 

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