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diff --git a/drivers/net/ark/ark_ext.h b/drivers/net/ark/ark_ext.h
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+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) 2015-2017 Atomic Rules LLC
+ * All rights reserved.
+ *
+ * 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.
+ * * Neither the name of copyright holder nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _ARK_EXT_H_
+#define _ARK_EXT_H_
+
+#include <rte_ethdev.h>
+
+/*
+ * This is the template file for users who which to define a dynamic
+ * extension to the Arkville PMD.   User's who create an extension
+ * should include this file and define the necessary and desired
+ * functions.
+ * Only 1 function is required for an extension, dev_init(); all other
+ * functions prototyped in this file are optional.
+ */
+
+/*
+ * Called post PMD init.
+ * The implementation returns its private data that gets passed into
+ * all other functions as user_data
+ * The ARK extension implementation MUST implement this function
+ */
+void *dev_init(struct rte_eth_dev *dev, void *a_bar, int port_id);
+
+/* Called during device shutdown */
+void dev_uninit(struct rte_eth_dev *dev, void *user_data);
+
+/* This call is optional and allows the
+ * extension to specify the number of supported ports.
+ */
+uint8_t dev_get_port_count(struct rte_eth_dev *dev,
+			   void *user_data);
+
+/*
+ * The following functions are optional and are directly mapped
+ * from the DPDK PMD ops structure.
+ * Each function if implemented is called after the ARK PMD
+ * implementation executes.
+ */
+
+int dev_configure(struct rte_eth_dev *dev,
+		  void *user_data);
+
+int dev_start(struct rte_eth_dev *dev,
+	      void *user_data);
+
+void dev_stop(struct rte_eth_dev *dev,
+	      void *user_data);
+
+void dev_close(struct rte_eth_dev *dev,
+	       void *user_data);
+
+int link_update(struct rte_eth_dev *dev,
+		int wait_to_complete,
+		void *user_data);
+
+int dev_set_link_up(struct rte_eth_dev *dev,
+		    void *user_data);
+
+int dev_set_link_down(struct rte_eth_dev *dev,
+		      void *user_data);
+
+void stats_get(struct rte_eth_dev *dev,
+	       struct rte_eth_stats *stats,
+	       void *user_data);
+
+void stats_reset(struct rte_eth_dev *dev,
+		 void *user_data);
+
+void mac_addr_add(struct rte_eth_dev *dev,
+		  struct ether_addr *macadr,
+		  uint32_t index,
+		  uint32_t pool,
+		  void *user_data);
+
+void mac_addr_remove(struct rte_eth_dev *dev,
+		     uint32_t index,
+		     void *user_data);
+
+void mac_addr_set(struct rte_eth_dev *dev,
+		  struct ether_addr *mac_addr,
+		  void *user_data);
+
+#endif