1 /* Header file for iptables ipt_ECN target 2 * 3 * (C) 2002 by Harald Welte <laforge (at) gnumonks.org> 4 * 5 * This software is distributed under GNU GPL v2, 1991 6 * 7 * Id: ipt_ECN.h,v 1.3 2002/05/29 12:17:40 laforge Exp 8 */ 9 #ifndef _IPT_ECN_TARGET_H 10 #define _IPT_ECN_TARGET_H 11 #include <linux/netfilter_ipv4/ipt_DSCP.h> 12 13 #define IPT_ECN_IP_MASK (~IPT_DSCP_MASK) 14 15 #define IPT_ECN_OP_SET_IP 0x01 /* set ECN bits of IPv4 header */ 16 #define IPT_ECN_OP_SET_ECE 0x10 /* set ECE bit of TCP header */ 17 #define IPT_ECN_OP_SET_CWR 0x20 /* set CWR bit of TCP header */ 18 19 #define IPT_ECN_OP_MASK 0xce 20 21 struct ipt_ECN_info { 22 u_int8_t operation; /* bitset of operations */ 23 u_int8_t ip_ect; /* ECT codepoint of IPv4 header, pre-shifted */ 24 union { 25 struct { 26 u_int8_t ece:1, cwr:1; /* TCP ECT bits */ 27 } tcp; 28 } proto; 29 }; 30 31 #endif /* _IPT_ECN_TARGET_H */ 32
