LXR linux/include/uapi/linux/netfilter/xt

   1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2/* iptables module for matching the ECN header in IPv4 and TCP header
   3 *
   4 * (C) 2002 Harald Welte <laforge@gnumonks.org>
   5 *
   6 * This software is distributed under GNU GPL v2, 1991
   7 * 
   8 * ipt_ecn.h,v 1.4 2002/08/05 19:39:00 laforge Exp
   9*/
  10#ifndef _XT_ECN_H
  11#define _XT_ECN_H
  12
  13#include <linux/types.h>
  14#include <linux/netfilter/xt_dscp.h>
  15
  16#define XT_ECN_IP_MASK  (~XT_DSCP_MASK)
  17
  18#define XT_ECN_OP_MATCH_IP      0x01
  19#define XT_ECN_OP_MATCH_ECE     0x10
  20#define XT_ECN_OP_MATCH_CWR     0x20
  21
  22#define XT_ECN_OP_MATCH_MASK    0xce
  23
  24/* match info */
  25struct xt_ecn_info {
  26        __u8 operation;
  27        __u8 invert;
  28        __u8 ip_ect;
  29        union {
  30                struct {
  31                        __u8 ect;
  32                } tcp;
  33        } proto;
  34};
  35
  36#endif /* _XT_ECN_H */
  37