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 __sum16 (*checksum)(struct sk_buff *skb, unsigned int hook, 34 unsigned int dataoff, u_int8_t protocol); 35 __sum16 (*checksum_partial)(struct sk_buff *skb, unsigned int hook, 36 unsigned int dataoff, unsigned int len, 37 u_int8_t protocol); 38 int (*route)(struct net *net, struct dst_entry **dst, struct flowi *fl, 39 bool strict); 40 int (*reroute)(struct sk_buff *skb, const struct nf_queue_entry *entry); 41 }; 42 43 #ifdef CONFIG_NETFILTER 44 int ip6_route_me_harder(struct net *net, struct sk_buff *skb); 45 __sum16 nf_ip6_checksum(struct sk_buff *skb, unsigned int hook, 46 unsigned int dataoff, u_int8_t protocol); 47 48 int ipv6_netfilter_init(void); 49 void ipv6_netfilter_fini(void); 50 51 extern const struct nf_ipv6_ops __rcu *nf_ipv6_ops; 52 static inline const struct nf_ipv6_ops *nf_get_ipv6_ops(void) 53 { 54 return rcu_dereference(nf_ipv6_ops); 55 } 56 57 #else /* CONFIG_NETFILTER */ 58 static inline int ipv6_netfilter_init(void) { return 0; } 59 static inline void ipv6_netfilter_fini(void) { return; } 60 static inline const struct nf_ipv6_ops *nf_get_ipv6_ops(void) { return NULL; } 61 #endif /* CONFIG_NETFILTER */ 62 63 #endif /*__LINUX_IP6_NETFILTER_H*/ 64