/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/* Header file for iptables ipt_ECN target
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*
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* (C) 2002 by Harald Welte <laforge@gnumonks.org>
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*
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* This software is distributed under GNU GPL v2, 1991
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*
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* ipt_ECN.h,v 1.3 2002/05/29 12:17:40 laforge Exp
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*/
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#ifndef _IPT_ECN_TARGET_H
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#define _IPT_ECN_TARGET_H
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#include <linux/types.h>
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#include <linux/netfilter/xt_DSCP.h>
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#define IPT_ECN_IP_MASK (~XT_DSCP_MASK)
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#define IPT_ECN_OP_SET_IP 0x01 /* set ECN bits of IPv4 header */
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#define IPT_ECN_OP_SET_ECE 0x10 /* set ECE bit of TCP header */
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#define IPT_ECN_OP_SET_CWR 0x20 /* set CWR bit of TCP header */
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#define IPT_ECN_OP_MASK 0xce
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struct ipt_ECN_info {
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__u8 operation; /* bitset of operations */
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__u8 ip_ect; /* ECT codepoint of IPv4 header, pre-shifted */
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union {
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struct {
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__u8 ece:1, cwr:1; /* TCP ECT bits */
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} tcp;
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} proto;
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};
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#endif /* _IPT_ECN_TARGET_H */
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