release/src/router/ebtables/extensions/ebtable_nat.c

   1 /* ebtable_nat
   2  *
   3  * Authors:
   4  * Bart De Schuymer <bdschuym@pandora.be>
   5  *
   6  * April, 2002
   7  */
   8
   9 #include <stdio.h>
  10 #include "../include/ebtables_u.h"
  11
  12 #define NAT_VALID_HOOKS ((1 << NF_BR_PRE_ROUTING) | (1 << NF_BR_LOCAL_OUT) | \
  13    (1 << NF_BR_POST_ROUTING))
  14
  15 static void print_help(const char **hn)
  16 {
  17         int i;
  18
  19         printf("Supported chains for the nat table:\n");
  20         for (i = 0; i < NF_BR_NUMHOOKS; i++)
  21                 if (NAT_VALID_HOOKS & (1 << i))
  22                         printf("%s ", hn[i]);
  23         printf("\n");
  24 }
  25
  26 static struct
  27 ebt_u_table table =
  28 {
  29         .name           = "nat",
  30         .help           = print_help,
  31 };
  32
  33 void _init(void)
  34 {
  35         ebt_register_table(&table);
  36 }