1 /* iptables module for matching the ECN header in IPv4 and TCP header
2  *
3  * (C) 2002 Harald Welte <laforge@gnumonks.org>
4  *
5  * This software is distributed under GNU GPL v2, 1991
6  *
7  * ipt_ecn.h,v 1.4 2002/08/05 19:39:00 laforge Exp
8 */
9 #ifndef _XT_ECN_H
10 #define _XT_ECN_H
11 
12 #include <linux/types.h>
13 #include <linux/netfilter/xt_dscp.h>
14 
15 #define XT_ECN_IP_MASK	(~XT_DSCP_MASK)
16 
17 #define XT_ECN_OP_MATCH_IP	0x01
18 #define XT_ECN_OP_MATCH_ECE	0x10
19 #define XT_ECN_OP_MATCH_CWR	0x20
20 
21 #define XT_ECN_OP_MATCH_MASK	0xce
22 
23 /* match info */
24 struct xt_ecn_info {
25 	__u8 operation;
26 	__u8 invert;
27 	__u8 ip_ect;
28 	union {
29 		struct {
30 			__u8 ect;
31 		} tcp;
32 	} proto;
33 };
34 
35 #endif /* _XT_ECN_H */
36