xt_ecn.h

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/* iptables module for matching the ECN header in IPv4 and TCP header
 *
 * (C) 2002 Harald Welte <[email protected]>
 *
 * This software is distributed under GNU GPL v2, 1991
 * 
 * ipt_ecn.h,v 1.4 2002/08/05 19:39:00 laforge Exp
*/
#ifndef _XT_ECN_H
#define _XT_ECN_H

#include <linux/types.h>
#include <linux/netfilter/xt_dscp.h>

#define XT_ECN_IP_MASK  (~XT_DSCP_MASK)

#define XT_ECN_OP_MATCH_IP  0x01
#define XT_ECN_OP_MATCH_ECE 0x10
#define XT_ECN_OP_MATCH_CWR 0x20

#define XT_ECN_OP_MATCH_MASK    0xce

/* match info */
struct xt_ecn_info {
    __u8 operation;
    __u8 invert;
    __u8 ip_ect;
    union {
        struct {
            __u8 ect;
        } tcp;
    } proto;
};

#endif /* _XT_ECN_H */