The C and C++ Include Header Files

/usr/include/linux/netfilter/xt_CHECKSUM.h


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

     1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
     2	/* Header file for iptables ipt_CHECKSUM target
     3	 *
     4	 * (C) 2002 by Harald Welte <laforge@gnumonks.org>
     5	 * (C) 2010 Red Hat Inc
     6	 * Author: Michael S. Tsirkin <mst@redhat.com>
     7	 *
     8	 * This software is distributed under GNU GPL v2, 1991
     9	*/
    10	#ifndef _XT_CHECKSUM_TARGET_H
    11	#define _XT_CHECKSUM_TARGET_H
    12	
    13	#include <linux/types.h>
    14	
    15	#define XT_CHECKSUM_OP_FILL	0x01	/* fill in checksum in IP header */
    16	
    17	struct xt_CHECKSUM_info {
    18		__u8 operation;	/* bitset of operations */
    19	};
    20	
    21	#endif /* _XT_CHECKSUM_TARGET_H */