/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ #ifndef _XT_ESP_H #define _XT_ESP_H #include <linux/types.h> struct xt_esp { … }; /* Values for "invflags" field in struct xt_esp. */ #define XT_ESP_INV_SPI … #define XT_ESP_INV_MASK … #endif /*_XT_ESP_H*/