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01: /* Header file for iptables ipt_ECN target
02:  *
03:  * (C) 2002 by Harald Welte <laforge@gnumonks.org>
04:  *
05:  * This software is distributed under GNU GPL v2, 1991
06:  * 
07:  * ipt_ECN.h,v 1.3 2002/05/29 12:17:40 laforge Exp
08: */
09: #ifndef _IPT_ECN_TARGET_H
10: #define _IPT_ECN_TARGET_H
11: 
12: #include <linux/types.h>
13: #include <linux/netfilter/xt_DSCP.h>
14: 
15: #define IPT_ECN_IP_MASK (~XT_DSCP_MASK)
16: 
17: #define IPT_ECN_OP_SET_IP       0x01    /* set ECN bits of IPv4 header */
18: #define IPT_ECN_OP_SET_ECE      0x10    /* set ECE bit of TCP header */
19: #define IPT_ECN_OP_SET_CWR      0x20    /* set CWR bit of TCP header */
20: 
21: #define IPT_ECN_OP_MASK         0xce
22: 
23: struct ipt_ECN_info {
24:         __u8 operation; /* bitset of operations */
25:         __u8 ip_ect;    /* ECT codepoint of IPv4 header, pre-shifted */
26:         union {
27:                 struct {
28:                         __u8 ece:1, cwr:1; /* TCP ECT bits */
29:                 } tcp;
30:         } proto;
31: };
32: 
33: #endif /* _IPT_ECN_TARGET_H */
34: 

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