v4.19.13 snapshot.
diff --git a/drivers/net/dsa/dsa_loop.h b/drivers/net/dsa/dsa_loop.h
new file mode 100644
index 0000000..93e5c15
--- /dev/null
+++ b/drivers/net/dsa/dsa_loop.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __DSA_LOOP_H
+#define __DSA_LOOP_H
+
+struct dsa_chip_data;
+
+struct dsa_loop_pdata {
+ /* Must be first, such that dsa_register_switch() can access this
+ * without gory pointer manipulations
+ */
+ struct dsa_chip_data cd;
+ const char *name;
+ unsigned int enabled_ports;
+ const char *netdev;
+};
+
+#define DSA_LOOP_NUM_PORTS 6
+#define DSA_LOOP_CPU_PORT (DSA_LOOP_NUM_PORTS - 1)
+
+#endif /* __DSA_LOOP_H */