2 * 25-Jul-1998 Major changes to allow for ip chain table
4 * 3-Jan-2000 Named tables to allow packet selection for different uses.
8 * Format of an IP6 firewall descriptor
10 * src, dst, src_mask, dst_mask are always stored in network byte order.
11 * flags are stored in host byte order (of course).
12 * Port numbers are stored in HOST byte order.
18 #include <linux/in6.h>
19 #include <linux/ipv6.h>
20 #include <linux/skbuff.h>
22 #include <linux/init.h>
23 #include <uapi/linux/netfilter_ipv6/ip6_tables.h>
25 extern void ip6t_init(void) __init;
27 extern void *ip6t_alloc_initial_table(const struct xt_table *);
28 extern struct xt_table *ip6t_register_table(struct net *net,
29 const struct xt_table *table,
30 const struct ip6t_replace *repl);
31 extern void ip6t_unregister_table(struct net *net, struct xt_table *table);
32 extern unsigned int ip6t_do_table(struct sk_buff *skb,
34 const struct net_device *in,
35 const struct net_device *out,
36 struct xt_table *table);
38 /* Check for an extension */
40 ip6t_ext_hdr(u8 nexthdr)
41 { return (nexthdr == IPPROTO_HOPOPTS) ||
42 (nexthdr == IPPROTO_ROUTING) ||
43 (nexthdr == IPPROTO_FRAGMENT) ||
44 (nexthdr == IPPROTO_ESP) ||
45 (nexthdr == IPPROTO_AH) ||
46 (nexthdr == IPPROTO_NONE) ||
47 (nexthdr == IPPROTO_DSTOPTS);
51 IP6T_FH_F_FRAG = (1 << 0),
52 IP6T_FH_F_AUTH = (1 << 1),
55 /* find specified header and get offset to it */
56 extern int ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset,
57 int target, unsigned short *fragoff, int *fragflg);
60 #include <net/compat.h>
62 struct compat_ip6t_entry {
64 compat_uint_t nfcache;
67 compat_uint_t comefrom;
68 struct compat_xt_counters counters;
69 unsigned char elems[0];
72 static inline struct xt_entry_target *
73 compat_ip6t_get_target(struct compat_ip6t_entry *e)
75 return (void *)e + e->target_offset;
78 #endif /* CONFIG_COMPAT */
79 #endif /* _IP6_TABLES_H */