The C and C++ Include Header Files

/usr/include/linux/netfilter/xt_dscp.h


$ cat -n /usr/include/linux/netfilter/xt_dscp.h

     1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
     2	/* x_tables module for matching the IPv4/IPv6 DSCP field
     3	 *
     4	 * (C) 2002 Harald Welte <laforge@gnumonks.org>
     5	 * This software is distributed under GNU GPL v2, 1991
     6	 *
     7	 * See RFC2474 for a description of the DSCP field within the IP Header.
     8	 *
     9	 * xt_dscp.h,v 1.3 2002/08/05 19:00:21 laforge Exp
    10	*/
    11	#ifndef _XT_DSCP_H
    12	#define _XT_DSCP_H
    13	
    14	#include <linux/types.h>
    15	
    16	#define XT_DSCP_MASK	0xfc	/* 11111100 */
    17	#define XT_DSCP_SHIFT	2
    18	#define XT_DSCP_MAX	0x3f	/* 00111111 */
    19	
    20	/* match info */
    21	struct xt_dscp_info {
    22		__u8 dscp;
    23		__u8 invert;
    24	};
    25	
    26	struct xt_tos_match_info {
    27		__u8 tos_mask;
    28		__u8 tos_value;
    29		__u8 invert;
    30	};
    31	
    32	#endif /* _XT_DSCP_H */