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/* 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 */