net/netfilter/xt_NFQUEUE.c

   1 /* iptables module for using new netfilter netlink queue
   2  *
   3  * (C) 2005 by Harald Welte <laforge@netfilter.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  */
  10
  11 #include <linux/module.h>
  12 #include <linux/skbuff.h>
  13
  14 #include <linux/netfilter.h>
  15 #include <linux/netfilter_arp.h>
  16 #include <linux/netfilter/x_tables.h>
  17 #include <linux/netfilter/xt_NFQUEUE.h>
  18
  19 MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>");
  20 MODULE_DESCRIPTION("Xtables: packet forwarding to netlink");
  21 MODULE_LICENSE("GPL");
  22 MODULE_ALIAS("ipt_NFQUEUE");
  23 MODULE_ALIAS("ip6t_NFQUEUE");
  24 MODULE_ALIAS("arpt_NFQUEUE");
  25
  26 static unsigned int
  27 nfqueue_tg(struct sk_buff *skb, const struct xt_target_param *par)
  28 {
  29         const struct xt_NFQ_info *tinfo = par->targinfo;
  30
  31         return NF_QUEUE_NR(tinfo->queuenum);
  32 }
  33
  34 static struct xt_target nfqueue_tg_reg[] __read_mostly = {
  35         {
  36                 .name           = "NFQUEUE",
  37                 .family         = NFPROTO_IPV4,
  38                 .target         = nfqueue_tg,
  39                 .targetsize     = sizeof(struct xt_NFQ_info),
  40                 .me             = THIS_MODULE,
  41         },
  42         {
  43                 .name           = "NFQUEUE",
  44                 .family         = NFPROTO_IPV6,
  45                 .target         = nfqueue_tg,
  46                 .targetsize     = sizeof(struct xt_NFQ_info),
  47                 .me             = THIS_MODULE,
  48         },
  49         {
  50                 .name           = "NFQUEUE",
  51                 .family         = NF_ARP,
  52                 .target         = nfqueue_tg,
  53                 .targetsize     = sizeof(struct xt_NFQ_info),
  54                 .me             = THIS_MODULE,
  55         },
  56 };
  57
  58 static int __init nfqueue_tg_init(void)
  59 {
  60         return xt_register_targets(nfqueue_tg_reg, ARRAY_SIZE(nfqueue_tg_reg));
  61 }
  62
  63 static void __exit nfqueue_tg_exit(void)
  64 {
  65         xt_unregister_targets(nfqueue_tg_reg, ARRAY_SIZE(nfqueue_tg_reg));
  66 }
  67
  68 module_init(nfqueue_tg_init);
  69 module_exit(nfqueue_tg_exit);