1 /* Kernel module to match TOS values. */
3 /* (C) 1999-2001 Paul `Rusty' Russell
4 * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
12 #include <linux/module.h>
13 #include <linux/skbuff.h>
15 #include <linux/netfilter_ipv4/ipt_tos.h>
16 #include <linux/netfilter/x_tables.h>
18 MODULE_LICENSE("GPL");
19 MODULE_DESCRIPTION("iptables TOS match module");
22 match(const struct sk_buff *skb,
23 const struct net_device *in,
24 const struct net_device *out,
25 const struct xt_match *match,
26 const void *matchinfo,
31 const struct ipt_tos_info *info = matchinfo;
33 return (ip_hdr(skb)->tos == info->tos) ^ info->invert;
36 static struct xt_match tos_match __read_mostly = {
40 .matchsize = sizeof(struct ipt_tos_info),
44 static int __init ipt_multiport_init(void)
46 return xt_register_match(&tos_match);
49 static void __exit ipt_multiport_fini(void)
51 xt_unregister_match(&tos_match);
54 module_init(ipt_multiport_init);
55 module_exit(ipt_multiport_fini);