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diff --git a/include/linux/mlx4/driver.h b/include/linux/mlx4/driver.h
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+++ b/include/linux/mlx4/driver.h
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+/*
+ * Copyright (c) 2006 Cisco Systems, Inc.  All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef MLX4_DRIVER_H
+#define MLX4_DRIVER_H
+
+#include <linux/mlx4/device.h>
+
+struct mlx4_dev;
+
+#define MLX4_MAC_MASK	   0xffffffffffffULL
+
+enum mlx4_dev_event {
+	MLX4_DEV_EVENT_CATASTROPHIC_ERROR,
+	MLX4_DEV_EVENT_PORT_UP,
+	MLX4_DEV_EVENT_PORT_DOWN,
+	MLX4_DEV_EVENT_PORT_REINIT,
+	MLX4_DEV_EVENT_PORT_MGMT_CHANGE,
+	MLX4_DEV_EVENT_SLAVE_INIT,
+	MLX4_DEV_EVENT_SLAVE_SHUTDOWN,
+};
+
+struct mlx4_interface {
+	void *			(*add)	 (struct mlx4_dev *dev);
+	void			(*remove)(struct mlx4_dev *dev, void *context);
+	void			(*event) (struct mlx4_dev *dev, void *context,
+					  enum mlx4_dev_event event, unsigned long param);
+	void *			(*get_dev)(struct mlx4_dev *dev, void *context, u8 port);
+	struct list_head	list;
+	enum mlx4_protocol	protocol;
+};
+
+int mlx4_register_interface(struct mlx4_interface *intf);
+void mlx4_unregister_interface(struct mlx4_interface *intf);
+
+void *mlx4_get_protocol_dev(struct mlx4_dev *dev, enum mlx4_protocol proto, int port);
+
+#endif /* MLX4_DRIVER_H */