--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _IPT_AH_H
+#define _IPT_AH_H
+
+#include <linux/types.h>
+
+struct ipt_ah {
+ __u32 spis[2]; /* Security Parameter Index */
+ __u8 invflags; /* Inverse flags */
+};
+
+
+
+/* Values for "invflags" field in struct ipt_ah. */
+#define IPT_AH_INV_SPI 0x01 /* Invert the sense of spi. */
+#define IPT_AH_INV_MASK 0x01 /* All possible flags. */
+
+#endif /*_IPT_AH_H*/