1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * 25-Jul-1998 Major changes to allow for ip chain table 4 * 5 * 3-Jan-2000 Named tables to allow packet selection for different uses. 6 */ 7 8 /* 9 * Format of an IP6 firewall descriptor 10 * 11 * src, dst, src_mask, dst_mask are always stored in network byte order. 12 * flags are stored in host byte order (of course). 13 * Port numbers are stored in HOST byte order. 14 */ 15 #ifndef _IP6_TABLES_H 16 #define _IP6_TABLES_H 17 18 #include <linux/if.h> 19 #include <linux/in6.h> 20 #include <linux/init.h> 21 #include <linux/ipv6.h> 22 #include <linux/skbuff.h> 23 #include <uapi/linux/netfilter_ipv6/ip6_tables.h> 24 25 extern void *ip6t_alloc_initial_table(const struct xt_table *); 26 27 int ip6t_register_table(struct net *net, const struct xt_table *table, 28 const struct ip6t_replace *repl, 29 const struct nf_hook_ops *ops); 30 void ip6t_unregister_table_pre_exit(struct net *net, const char *name); 31 void ip6t_unregister_table_exit(struct net *net, const char *name); 32 extern unsigned int ip6t_do_table(void *priv, struct sk_buff *skb, 33 const struct nf_hook_state *state); 34 35 #ifdef CONFIG_NETFILTER_XTABLES_COMPAT 36 #include <net/compat.h> 37 38 struct compat_ip6t_entry { 39 struct ip6t_ip6 ipv6; 40 compat_uint_t nfcache; 41 __u16 target_offset; 42 __u16 next_offset; 43 compat_uint_t comefrom; 44 struct compat_xt_counters counters; 45 unsigned char elems[]; 46 }; 47 48 static inline struct xt_entry_target * 49 compat_ip6t_get_target(struct compat_ip6t_entry *e) 50 { 51 return (void *)e + e->target_offset; 52 } 53 54 #endif /* CONFIG_COMPAT */ 55 #endif /* _IP6_TABLES_H */ 56