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/*-
 *   BSD LICENSE
 *
 *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
 *   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 Intel Corporation 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 _RTE_ETH_RING_H_
#define _RTE_ETH_RING_H_

#ifdef __cplusplus
extern "C" {
#endif

#include <rte_ring.h>

/**
 * Create a new ethdev port from a set of rings
 *
 * @param name
 *    name to be given to the new ethdev port
 * @param rx_queues
 *    pointer to array of rte_rings to be used as RX queues
 * @param nb_rx_queues
 *    number of elements in the rx_queues array
 * @param tx_queues
 *    pointer to array of rte_rings to be used as TX queues
 * @param nb_tx_queues
 *    number of elements in the tx_queues array
 * @param numa_node
 *    the numa node on which the memory for this port is to be allocated
 * @return
 *    the port number of the newly created the ethdev or -1 on error.
 */
int rte_eth_from_rings(const char *name,
		struct rte_ring * const rx_queues[],
		const unsigned nb_rx_queues,
		struct rte_ring *const tx_queues[],
		const unsigned nb_tx_queues,
		const unsigned numa_node);

/**
 * Create a new ethdev port from a ring
 *
 * This function is a shortcut call for rte_eth_from_rings for the
 * case where one wants to take a single rte_ring and use it as though
 * it were an ethdev
 *
 * @param ring
 *    the ring to be used as an ethdev
 * @return
 *    the port number of the newly created ethdev, or -1 on error
 */
int rte_eth_from_ring(struct rte_ring *r);

#ifdef __cplusplus
}
#endif

#endif