1 files changed, 31 insertions, 0 deletions
diff --git a/include/uapi/linux/nsm.h b/include/uapi/linux/nsm.h
new file mode 100644
index 000000000000..e529f232f6c0
--- /dev/null
+++ b/include/uapi/linux/nsm.h
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ */
+
+#ifndef __UAPI_LINUX_NSM_H
+#define __UAPI_LINUX_NSM_H
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+
+#define NSM_MAGIC		0x0A
+
+#define NSM_REQUEST_MAX_SIZE	0x1000
+#define NSM_RESPONSE_MAX_SIZE	0x3000
+
+struct nsm_iovec {
+	__u64 addr; /* Virtual address of target buffer */
+	__u64 len;  /* Length of target buffer */
+};
+
+/* Raw NSM message. Only available with CAP_SYS_ADMIN. */
+struct nsm_raw {
+	/* Request from user */
+	struct nsm_iovec request;
+	/* Response to user */
+	struct nsm_iovec response;
+};
+#define NSM_IOCTL_RAW		_IOWR(NSM_MAGIC, 0x0, struct nsm_raw)
+
+#endif /* __UAPI_LINUX_NSM_H */