/* Header file for iptables ipt_ECN target

 *

 * (C) 2002 by Harald Welte <laforge@gnumonks.org>

 *

 * This software is distributed under GNU GPL v2, 1991

 * 

 * ipt_ECN.h,v 1.3 2002/05/29 12:17:40 laforge Exp

*/

#ifndef _IPT_ECN_TARGET_H

#define _IPT_ECN_TARGET_H

#include <linux/types.h>

#include <linux/netfilter/xt_DSCP.h>

#define IPT_ECN_IP_MASK	(~XT_DSCP_MASK)

#define IPT_ECN_OP_SET_IP	0x01	/* set ECN bits of IPv4 header */

#define IPT_ECN_OP_SET_ECE	0x10	/* set ECE bit of TCP header */

#define IPT_ECN_OP_SET_CWR	0x20	/* set CWR bit of TCP header */

#define IPT_ECN_OP_MASK		0xce

struct ipt_ECN_info {

	__u8 operation;	/* bitset of operations */

	__u8 ip_ect;	/* ECT codepoint of IPv4 header, pre-shifted */

	union {

		struct {

			__u8 ece:1, cwr:1; /* TCP ECT bits */

		} tcp;

	} proto;

};

#endif /* _IPT_ECN_TARGET_H */