include/uapi/linux/netfilter/xt_ecn.h

   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 */
  25 struct 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 */