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1d5cd90976
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
/* Kernel module to match TOS values. */
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/* (C) 1999-2001 Paul `Rusty' Russell
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* (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/skbuff.h>
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#include <linux/netfilter_ipv4/ipt_tos.h>
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#include <linux/netfilter_ipv4/ip_tables.h>
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("iptables TOS match module");
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static int
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match(const struct sk_buff *skb,
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const struct net_device *in,
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const struct net_device *out,
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const void *matchinfo,
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int offset,
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unsigned int protoff,
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int *hotdrop)
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{
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const struct ipt_tos_info *info = matchinfo;
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return (skb->nh.iph->tos == info->tos) ^ info->invert;
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}
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static struct ipt_match tos_match = {
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.name = "tos",
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.match = match,
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.matchsize = sizeof(struct ipt_tos_info),
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.me = THIS_MODULE,
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};
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static int __init init(void)
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{
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return ipt_register_match(&tos_match);
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}
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static void __exit fini(void)
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{
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ipt_unregister_match(&tos_match);
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}
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module_init(init);
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module_exit(fini);
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