/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* 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 */