The C and C++ Include Header Files

/usr/include/linux/netfilter_ipv4/ipt_ttl.h


$ cat -n /usr/include/linux/netfilter_ipv4/ipt_ttl.h

     1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
     2	/* IP tables module for matching the value of the TTL
     3	 * (C) 2000 by Harald Welte <laforge@gnumonks.org> */
     4	
     5	#ifndef _IPT_TTL_H
     6	#define _IPT_TTL_H
     7	
     8	#include <linux/types.h>
     9	
    10	enum {
    11		IPT_TTL_EQ = 0,		/* equals */
    12		IPT_TTL_NE,		/* not equals */
    13		IPT_TTL_LT,		/* less than */
    14		IPT_TTL_GT,		/* greater than */
    15	};
    16	
    17	
    18	struct ipt_ttl_info {
    19		__u8	mode;
    20		__u8	ttl;
    21	};
    22	
    23	
    24	#endif