v4.19.13 snapshot.
diff --git a/include/linux/seg6_hmac.h b/include/linux/seg6_hmac.h
new file mode 100644
index 0000000..16e5959
--- /dev/null
+++ b/include/linux/seg6_hmac.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_SEG6_HMAC_H
+#define _LINUX_SEG6_HMAC_H
+
+#include <uapi/linux/seg6_hmac.h>
+
+#endif