LXR linux/include/linux/netfilter

   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 */
  15struct ip6_rt_info {
  16        struct in6_addr daddr;
  17        struct in6_addr saddr;
  18        u_int32_t mark;
  19};
  20
  21struct 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 */
  27struct 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
  44int 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
  48int ipv6_netfilter_init(void);
  49void ipv6_netfilter_fini(void);
  50
  51extern const struct nf_ipv6_ops __rcu *nf_ipv6_ops;
  52static 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 */
  58static inline int ipv6_netfilter_init(void) { return 0; }
  59static inline void ipv6_netfilter_fini(void) { return; }
  60static 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