The C and C++ Include Header Files

/usr/include/linux/netfilter/xt_esp.h


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

     1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
     2	#ifndef _XT_ESP_H
     3	#define _XT_ESP_H
     4	
     5	#include <linux/types.h>
     6	
     7	struct xt_esp {
     8		__u32 spis[2];	/* Security Parameter Index */
     9		__u8  invflags;	/* Inverse flags */
    10	};
    11	
    12	/* Values for "invflags" field in struct xt_esp. */
    13	#define XT_ESP_INV_SPI	0x01	/* Invert the sense of spi. */
    14	#define XT_ESP_INV_MASK	0x01	/* All possible flags. */
    15	
    16	#endif /*_XT_ESP_H*/