The C and C++ Include Header Files

/usr/include/linux/netfilter_ipv6/ip6t_opts.h


$ cat -n /usr/include/linux/netfilter_ipv6/ip6t_opts.h

     1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
     2	#ifndef _IP6T_OPTS_H
     3	#define _IP6T_OPTS_H
     4	
     5	#include <linux/types.h>
     6	
     7	#define IP6T_OPTS_OPTSNR 16
     8	
     9	struct ip6t_opts {
    10		__u32 hdrlen;			/* Header Length */
    11		__u8 flags;				/*  */
    12		__u8 invflags;			/* Inverse flags */
    13		__u16 opts[IP6T_OPTS_OPTSNR];	/* opts */
    14		__u8 optsnr;			/* Nr of OPts */
    15	};
    16	
    17	#define IP6T_OPTS_LEN 		0x01
    18	#define IP6T_OPTS_OPTS 		0x02
    19	#define IP6T_OPTS_NSTRICT	0x04
    20	
    21	/* Values for "invflags" field in struct ip6t_rt. */
    22	#define IP6T_OPTS_INV_LEN	0x01	/* Invert the sense of length. */
    23	#define IP6T_OPTS_INV_MASK	0x01	/* All possible flags. */
    24	
    25	#endif /*_IP6T_OPTS_H*/