LXR linux/net/netfilter/xt

   1/*
   2 * This is a module which is used for setting the skb->priority field
   3 * of an skb for qdisc classification.
   4 */
   5
   6/* (C) 2001-2002 Patrick McHardy <kaber@trash.net>
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License version 2 as
  10 * published by the Free Software Foundation.
  11 */
  12
  13#include <linux/module.h>
  14#include <linux/skbuff.h>
  15#include <linux/ip.h>
  16#include <net/checksum.h>
  17
  18#include <linux/netfilter_ipv4.h>
  19#include <linux/netfilter_ipv6.h>
  20#include <linux/netfilter/x_tables.h>
  21#include <linux/netfilter/xt_CLASSIFY.h>
  22
  23MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
  24MODULE_LICENSE("GPL");
  25MODULE_DESCRIPTION("Xtables: Qdisc classification");
  26MODULE_ALIAS("ipt_CLASSIFY");
  27MODULE_ALIAS("ip6t_CLASSIFY");
  28
  29static unsigned int
  30classify_tg(struct sk_buff *skb, const struct xt_target_param *par)
  31{
  32        const struct xt_classify_target_info *clinfo = par->targinfo;
  33
  34        skb->priority = clinfo->priority;
  35        return XT_CONTINUE;
  36}
  37
  38static struct xt_target classify_tg_reg __read_mostly = {
  39        .name       = "CLASSIFY",
  40        .revision   = 0,
  41        .family     = NFPROTO_UNSPEC,
  42        .table      = "mangle",
  43        .hooks      = (1 << NF_INET_LOCAL_OUT) | (1 << NF_INET_FORWARD) |
  44                      (1 << NF_INET_POST_ROUTING),
  45        .target     = classify_tg,
  46        .targetsize = sizeof(struct xt_classify_target_info),
  47        .me         = THIS_MODULE,
  48};
  49
  50static int __init classify_tg_init(void)
  51{
  52        return xt_register_target(&classify_tg_reg);
  53}
  54
  55static void __exit classify_tg_exit(void)
  56{
  57        xt_unregister_target(&classify_tg_reg);
  58}
  59
  60module_init(classify_tg_init);
  61module_exit(classify_tg_exit);
  62