root/include/linux/netfilter_ipv6/ip6_tables.h

INCLUDED FROM

DEFINITIONS

1. compat_ip6t_get_target

   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, struct xt_table **res);
  30 void ip6t_unregister_table(struct net *net, struct xt_table *table,
  31                            const struct nf_hook_ops *ops);
  32 extern unsigned int ip6t_do_table(struct sk_buff *skb,
  33                                   const struct nf_hook_state *state,
  34                                   struct xt_table *table);
  35 
  36 #ifdef CONFIG_COMPAT
  37 #include <net/compat.h>
  38 
  39 struct compat_ip6t_entry {
  40         struct ip6t_ip6 ipv6;
  41         compat_uint_t nfcache;
  42         __u16 target_offset;
  43         __u16 next_offset;
  44         compat_uint_t comefrom;
  45         struct compat_xt_counters counters;
  46         unsigned char elems[0];
  47 };
  48 
  49 static inline struct xt_entry_target *
  50 compat_ip6t_get_target(struct compat_ip6t_entry *e)
  51 {
  52         return (void *)e + e->target_offset;
  53 }
  54 
  55 #endif /* CONFIG_COMPAT */
  56 #endif /* _IP6_TABLES_H */