--- /dev/null
+#ifndef _USR_LOTEST_H
+#define _USR_LOTEST_H
+
+/** @file
+ *
+ * Loopback testing
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+extern int loopback_test ( struct net_device *sender,
+ struct net_device *receiver, size_t mtu );
+
+#endif /* _USR_LOTEST_H */