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^)
7 #ifndef __LINUX_IP6_NETFILTER_H
8 #define __LINUX_IP6_NETFILTER_H
10 #include <uapi/linux/netfilter_ipv6.h>
12 /* Extra routing may needed on local out, as the QUEUE target never returns
13 * control to the table.
16 struct in6_addr daddr;
17 struct in6_addr saddr;
21 struct nf_queue_entry;
24 * Hook functions for ipv6 to allow xt_* modules to be built-in even
25 * if IPv6 is a module.
28 #if IS_MODULE(CONFIG_IPV6)
29 int (*chk_addr)(struct net *net, const struct in6_addr *addr,
30 const struct net_device *dev, int strict);
31 int (*route_me_harder)(struct net *net, struct sk_buff *skb);
32 int (*dev_get_saddr)(struct net *net, const struct net_device *dev,
33 const struct in6_addr *daddr, unsigned int srcprefs,
34 struct in6_addr *saddr);
35 int (*route)(struct net *net, struct dst_entry **dst, struct flowi *fl,
38 void (*route_input)(struct sk_buff *skb);
39 int (*fragment)(struct net *net, struct sock *sk, struct sk_buff *skb,
40 int (*output)(struct net *, struct sock *, struct sk_buff *));
41 int (*reroute)(struct sk_buff *skb, const struct nf_queue_entry *entry);
44 #ifdef CONFIG_NETFILTER
45 #include <net/addrconf.h>
47 extern const struct nf_ipv6_ops __rcu *nf_ipv6_ops;
48 static inline const struct nf_ipv6_ops *nf_get_ipv6_ops(void)
50 return rcu_dereference(nf_ipv6_ops);
53 static inline int nf_ipv6_chk_addr(struct net *net, const struct in6_addr *addr,
54 const struct net_device *dev, int strict)
56 #if IS_MODULE(CONFIG_IPV6)
57 const struct nf_ipv6_ops *v6_ops = nf_get_ipv6_ops();
62 return v6_ops->chk_addr(net, addr, dev, strict);
64 return ipv6_chk_addr(net, addr, dev, strict);
68 int __nf_ip6_route(struct net *net, struct dst_entry **dst,
69 struct flowi *fl, bool strict);
71 static inline int nf_ip6_route(struct net *net, struct dst_entry **dst,
72 struct flowi *fl, bool strict)
74 #if IS_MODULE(CONFIG_IPV6)
75 const struct nf_ipv6_ops *v6ops = nf_get_ipv6_ops();
78 return v6ops->route(net, dst, fl, strict);
82 #if IS_BUILTIN(CONFIG_IPV6)
83 return __nf_ip6_route(net, dst, fl, strict);
89 int ip6_route_me_harder(struct net *net, struct sk_buff *skb);
90 __sum16 nf_ip6_checksum(struct sk_buff *skb, unsigned int hook,
91 unsigned int dataoff, u_int8_t protocol);
93 int ipv6_netfilter_init(void);
94 void ipv6_netfilter_fini(void);
96 #else /* CONFIG_NETFILTER */
97 static inline int ipv6_netfilter_init(void) { return 0; }
98 static inline void ipv6_netfilter_fini(void) { return; }
99 static inline const struct nf_ipv6_ops *nf_get_ipv6_ops(void) { return NULL; }
100 #endif /* CONFIG_NETFILTER */
102 #endif /*__LINUX_IP6_NETFILTER_H*/