[PATCH v2 4/6] ethdev: reorder inline functions

[Ferruh Yigit <ferruh.yigit@intel.com>]

Move all inline function to the end of the ethdev.h header file and move
the ethdev_core.h just before inline functions.

Since inline functions need data structures in ethdev_core.h, this
reorder is to group them and make it clear where put further inline
functions.

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
---
 lib/librte_ether/rte_ethdev.h | 2688 +++++++++++++++++++++--------------------
 1 file changed, 1345 insertions(+), 1343 deletions(-)

diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index 7cf177fb2..fc7ce29bf 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -1189,6 +1189,8 @@ typedef uint16_t (*rte_rx_callback_fn)(uint16_t port, uint16_t queue,
 typedef uint16_t (*rte_tx_callback_fn)(uint16_t port, uint16_t queue,
 	struct rte_mbuf *pkts[], uint16_t nb_pkts, void *user_param);
 
+struct rte_eth_rxtx_callback;
+
 /**
  * A set of values to describe the possible states of an eth device.
  */
@@ -1211,8 +1213,6 @@ struct rte_eth_dev_sriov {
 
 #define RTE_ETH_NAME_MAX_LEN RTE_DEV_NAME_MAX_LEN
 
-#include <rte_ethdev_core.h>
-
 /** Device supports link state interrupt */
 #define RTE_ETH_DEV_INTR_LSC     0x0002
 /** Device is a bonded slave */
@@ -2131,1768 +2131,1770 @@ int rte_eth_dev_get_vlan_offload(uint16_t port_id);
  */
 int rte_eth_dev_set_vlan_pvid(uint16_t port_id, uint16_t pvid, int on);
 
+typedef void (*buffer_tx_error_fn)(struct rte_mbuf **unsent, uint16_t count,
+		void *userdata);
+
 /**
+ * Structure used to buffer packets for future TX
+ * Used by APIs rte_eth_tx_buffer and rte_eth_tx_buffer_flush
+ */
+struct rte_eth_dev_tx_buffer {
+	buffer_tx_error_fn error_callback;
+	void *error_userdata;
+	uint16_t size;           /**< Size of buffer for buffered tx */
+	uint16_t length;         /**< Number of packets in the array */
+	struct rte_mbuf *pkts[];
+	/**< Pending packets to be sent on explicit flush or when full */
+};
+
+/**
+ * Calculate the size of the tx buffer.
  *
- * Retrieve a burst of input packets from a receive queue of an Ethernet
- * device. The retrieved packets are stored in *rte_mbuf* structures whose
- * pointers are supplied in the *rx_pkts* array.
- *
- * The rte_eth_rx_burst() function loops, parsing the RX ring of the
- * receive queue, up to *nb_pkts* packets, and for each completed RX
- * descriptor in the ring, it performs the following operations:
+ * @param sz
+ *   Number of stored packets.
+ */
+#define RTE_ETH_TX_BUFFER_SIZE(sz) \
+	(sizeof(struct rte_eth_dev_tx_buffer) + (sz) * sizeof(struct rte_mbuf *))
+
+/**
+ * Initialize default values for buffered transmitting
  *
- * - Initialize the *rte_mbuf* data structure associated with the
- *   RX descriptor according to the information provided by the NIC into
- *   that RX descriptor.
+ * @param buffer
+ *   Tx buffer to be initialized.
+ * @param size
+ *   Buffer size
+ * @return
+ *   0 if no error
+ */
+int
+rte_eth_tx_buffer_init(struct rte_eth_dev_tx_buffer *buffer, uint16_t size);
+
+/**
+ * Configure a callback for buffered packets which cannot be sent
  *
- * - Store the *rte_mbuf* data structure into the next entry of the
- *   *rx_pkts* array.
+ * Register a specific callback to be called when an attempt is made to send
+ * all packets buffered on an ethernet port, but not all packets can
+ * successfully be sent. The callback registered here will be called only
+ * from calls to rte_eth_tx_buffer() and rte_eth_tx_buffer_flush() APIs.
+ * The default callback configured for each queue by default just frees the
+ * packets back to the calling mempool. If additional behaviour is required,
+ * for example, to count dropped packets, or to retry transmission of packets
+ * which cannot be sent, this function should be used to register a suitable
+ * callback function to implement the desired behaviour.
+ * The example callback "rte_eth_count_unsent_packet_callback()" is also
+ * provided as reference.
  *
- * - Replenish the RX descriptor with a new *rte_mbuf* buffer
- *   allocated from the memory pool associated with the receive queue at
- *   initialization time.
+ * @param buffer
+ *   The port identifier of the Ethernet device.
+ * @param callback
+ *   The function to be used as the callback.
+ * @param userdata
+ *   Arbitrary parameter to be passed to the callback function
+ * @return
+ *   0 on success, or -1 on error with rte_errno set appropriately
+ */
+int
+rte_eth_tx_buffer_set_err_callback(struct rte_eth_dev_tx_buffer *buffer,
+		buffer_tx_error_fn callback, void *userdata);
+
+/**
+ * Callback function for silently dropping unsent buffered packets.
  *
- * When retrieving an input packet that was scattered by the controller
- * into multiple receive descriptors, the rte_eth_rx_burst() function
- * appends the associated *rte_mbuf* buffers to the first buffer of the
- * packet.
+ * This function can be passed to rte_eth_tx_buffer_set_err_callback() to
+ * adjust the default behavior when buffered packets cannot be sent. This
+ * function drops any unsent packets silently and is used by tx buffered
+ * operations as default behavior.
  *
- * The rte_eth_rx_burst() function returns the number of packets
- * actually retrieved, which is the number of *rte_mbuf* data structures
- * effectively supplied into the *rx_pkts* array.
- * A return value equal to *nb_pkts* indicates that the RX queue contained
- * at least *rx_pkts* packets, and this is likely to signify that other
- * received packets remain in the input queue. Applications implementing
- * a "retrieve as much received packets as possible" policy can check this
- * specific case and keep invoking the rte_eth_rx_burst() function until
- * a value less than *nb_pkts* is returned.
+ * NOTE: this function should not be called directly, instead it should be used
+ *       as a callback for packet buffering.
  *
- * This receive method has the following advantages:
+ * NOTE: when configuring this function as a callback with
+ *       rte_eth_tx_buffer_set_err_callback(), the final, userdata parameter
+ *       should point to an uint64_t value.
  *
- * - It allows a run-to-completion network stack engine to retrieve and
- *   to immediately process received packets in a fast burst-oriented
- *   approach, avoiding the overhead of unnecessary intermediate packet
- *   queue/dequeue operations.
+ * @param pkts
+ *   The previously buffered packets which could not be sent
+ * @param unsent
+ *   The number of unsent packets in the pkts array
+ * @param userdata
+ *   Not used
+ */
+void
+rte_eth_tx_buffer_drop_callback(struct rte_mbuf **pkts, uint16_t unsent,
+		void *userdata);
+
+/**
+ * Callback function for tracking unsent buffered packets.
  *
- * - Conversely, it also allows an asynchronous-oriented processing
- *   method to retrieve bursts of received packets and to immediately
- *   queue them for further parallel processing by another logical core,
- *   for instance. However, instead of having received packets being
- *   individually queued by the driver, this approach allows the caller
- *   of the rte_eth_rx_burst() function to queue a burst of retrieved
- *   packets at a time and therefore dramatically reduce the cost of
- *   enqueue/dequeue operations per packet.
+ * This function can be passed to rte_eth_tx_buffer_set_err_callback() to
+ * adjust the default behavior when buffered packets cannot be sent. This
+ * function drops any unsent packets, but also updates a user-supplied counter
+ * to track the overall number of packets dropped. The counter should be an
+ * uint64_t variable.
  *
- * - It allows the rte_eth_rx_burst() function of the driver to take
- *   advantage of burst-oriented hardware features (CPU cache,
- *   prefetch instructions, and so on) to minimize the number of CPU
- *   cycles per packet.
+ * NOTE: this function should not be called directly, instead it should be used
+ *       as a callback for packet buffering.
  *
- * To summarize, the proposed receive API enables many
- * burst-oriented optimizations in both synchronous and asynchronous
- * packet processing environments with no overhead in both cases.
+ * NOTE: when configuring this function as a callback with
+ *       rte_eth_tx_buffer_set_err_callback(), the final, userdata parameter
+ *       should point to an uint64_t value.
  *
- * The rte_eth_rx_burst() function does not provide any error
- * notification to avoid the corresponding overhead. As a hint, the
- * upper-level application might check the status of the device link once
- * being systematically returned a 0 value for a given number of tries.
+ * @param pkts
+ *   The previously buffered packets which could not be sent
+ * @param unsent
+ *   The number of unsent packets in the pkts array
+ * @param userdata
+ *   Pointer to an uint64_t value, which will be incremented by unsent
+ */
+void
+rte_eth_tx_buffer_count_callback(struct rte_mbuf **pkts, uint16_t unsent,
+		void *userdata);
+
+/**
+ * Request the driver to free mbufs currently cached by the driver. The
+ * driver will only free the mbuf if it is no longer in use. It is the
+ * application's responsibity to ensure rte_eth_tx_buffer_flush(..) is
+ * called if needed.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
  * @param queue_id
- *   The index of the receive queue from which to retrieve input packets.
- *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
+ *   The index of the transmit queue through which output packets must be
+ *   sent.
+ *   The value must be in the range [0, nb_tx_queue - 1] previously supplied
  *   to rte_eth_dev_configure().
- * @param rx_pkts
- *   The address of an array of pointers to *rte_mbuf* structures that
- *   must be large enough to store *nb_pkts* pointers in it.
- * @param nb_pkts
- *   The maximum number of packets to retrieve.
+ * @param free_cnt
+ *   Maximum number of packets to free. Use 0 to indicate all possible packets
+ *   should be freed. Note that a packet may be using multiple mbufs.
  * @return
- *   The number of packets actually retrieved, which is the number
- *   of pointers to *rte_mbuf* structures effectively supplied to the
- *   *rx_pkts* array.
+ *   Failure: < 0
+ *     -ENODEV: Invalid interface
+ *     -ENOTSUP: Driver does not support function
+ *   Success: >= 0
+ *     0-n: Number of packets freed. More packets may still remain in ring that
+ *     are in use.
  */
-static inline uint16_t
-rte_eth_rx_burst(uint16_t port_id, uint16_t queue_id,
-		 struct rte_mbuf **rx_pkts, const uint16_t nb_pkts)
-{
-	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
-
-#ifdef RTE_LIBRTE_ETHDEV_DEBUG
-	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, 0);
-	RTE_FUNC_PTR_OR_ERR_RET(*dev->rx_pkt_burst, 0);
+int
+rte_eth_tx_done_cleanup(uint16_t port_id, uint16_t queue_id, uint32_t free_cnt);
 
-	if (queue_id >= dev->data->nb_rx_queues) {
-		RTE_PMD_DEBUG_TRACE("Invalid RX queue_id=%d\n", queue_id);
-		return 0;
-	}
-#endif
-	int16_t nb_rx = (*dev->rx_pkt_burst)(dev->data->rx_queues[queue_id],
-			rx_pkts, nb_pkts);
+/**
+ * The eth device event type for interrupt, and maybe others in the future.
+ */
+enum rte_eth_event_type {
+	RTE_ETH_EVENT_UNKNOWN,  /**< unknown event type */
+	RTE_ETH_EVENT_INTR_LSC, /**< lsc interrupt event */
+	RTE_ETH_EVENT_QUEUE_STATE,
+				/**< queue state event (enabled/disabled) */
+	RTE_ETH_EVENT_INTR_RESET,
+			/**< reset interrupt event, sent to VF on PF reset */
+	RTE_ETH_EVENT_VF_MBOX,  /**< message from the VF received by PF */
+	RTE_ETH_EVENT_MACSEC,   /**< MACsec offload related event */
+	RTE_ETH_EVENT_INTR_RMV, /**< device removal event */
+	RTE_ETH_EVENT_MAX       /**< max value of this enum */
+};
 
-#ifdef RTE_ETHDEV_RXTX_CALLBACKS
-	struct rte_eth_rxtx_callback *cb = dev->post_rx_burst_cbs[queue_id];
+typedef int (*rte_eth_dev_cb_fn)(uint16_t port_id,
+		enum rte_eth_event_type event, void *cb_arg, void *ret_param);
+/**< user application callback to be registered for interrupts */
 
-	if (unlikely(cb != NULL)) {
-		do {
-			nb_rx = cb->fn.rx(port_id, queue_id, rx_pkts, nb_rx,
-						nb_pkts, cb->param);
-			cb = cb->next;
-		} while (cb != NULL);
-	}
-#endif
 
-	return nb_rx;
-}
 
 /**
- * Get the number of used descriptors of a rx queue
+ * Register a callback function for specific port id.
  *
  * @param port_id
- *  The port identifier of the Ethernet device.
- * @param queue_id
- *  The queue id on the specific port.
+ *  Port id.
+ * @param event
+ *  Event interested.
+ * @param cb_fn
+ *  User supplied callback function to be called.
+ * @param cb_arg
+ *  Pointer to the parameters for the registered callback.
+ *
  * @return
- *  The number of used descriptors in the specific queue, or:
- *     (-EINVAL) if *port_id* or *queue_id* is invalid
- *     (-ENOTSUP) if the device does not support this function
+ *  - On success, zero.
+ *  - On failure, a negative value.
  */
-static inline int
-rte_eth_rx_queue_count(uint16_t port_id, uint16_t queue_id)
-{
-	struct rte_eth_dev *dev;
-
-	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -EINVAL);
-	dev = &rte_eth_devices[port_id];
-	RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_count, -ENOTSUP);
-	if (queue_id >= dev->data->nb_rx_queues)
-		return -EINVAL;
-
-	return (*dev->dev_ops->rx_queue_count)(dev, queue_id);
-}
+int rte_eth_dev_callback_register(uint16_t port_id,
+			enum rte_eth_event_type event,
+		rte_eth_dev_cb_fn cb_fn, void *cb_arg);
 
 /**
- * Check if the DD bit of the specific RX descriptor in the queue has been set
+ * Unregister a callback function for specific port id.
  *
  * @param port_id
- *  The port identifier of the Ethernet device.
- * @param queue_id
- *  The queue id on the specific port.
- * @param offset
- *  The offset of the descriptor ID from tail.
+ *  Port id.
+ * @param event
+ *  Event interested.
+ * @param cb_fn
+ *  User supplied callback function to be called.
+ * @param cb_arg
+ *  Pointer to the parameters for the registered callback. -1 means to
+ *  remove all for the same callback address and same event.
+ *
  * @return
- *  - (1) if the specific DD bit is set.
- *  - (0) if the specific DD bit is not set.
- *  - (-ENODEV) if *port_id* invalid.
- *  - (-ENOTSUP) if the device does not support this function
+ *  - On success, zero.
+ *  - On failure, a negative value.
  */
-static inline int
-rte_eth_rx_descriptor_done(uint16_t port_id, uint16_t queue_id, uint16_t offset)
-{
-	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
-	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
-	RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_descriptor_done, -ENOTSUP);
-	return (*dev->dev_ops->rx_descriptor_done)( \
-		dev->data->rx_queues[queue_id], offset);
-}
-
-#define RTE_ETH_RX_DESC_AVAIL    0 /**< Desc available for hw. */
-#define RTE_ETH_RX_DESC_DONE     1 /**< Desc done, filled by hw. */
-#define RTE_ETH_RX_DESC_UNAVAIL  2 /**< Desc used by driver or hw. */
+int rte_eth_dev_callback_unregister(uint16_t port_id,
+			enum rte_eth_event_type event,
+		rte_eth_dev_cb_fn cb_fn, void *cb_arg);
 
 /**
- * Check the status of a Rx descriptor in the queue
- *
- * It should be called in a similar context than the Rx function:
- * - on a dataplane core
- * - not concurrently on the same queue
- *
- * Since it's a dataplane function, no check is performed on port_id and
- * queue_id. The caller must therefore ensure that the port is enabled
- * and the queue is configured and running.
+ * When there is no rx packet coming in Rx Queue for a long time, we can
+ * sleep lcore related to RX Queue for power saving, and enable rx interrupt
+ * to be triggered when Rx packet arrives.
  *
- * Note: accessing to a random descriptor in the ring may trigger cache
- * misses and have a performance impact.
+ * The rte_eth_dev_rx_intr_enable() function enables rx queue
+ * interrupt on specific rx queue of a port.
  *
  * @param port_id
- *  A valid port identifier of the Ethernet device which.
+ *   The port identifier of the Ethernet device.
  * @param queue_id
- *  A valid Rx queue identifier on this port.
- * @param offset
- *  The offset of the descriptor starting from tail (0 is the next
- *  packet to be received by the driver).
- *
+ *   The index of the receive queue from which to retrieve input packets.
+ *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
+ *   to rte_eth_dev_configure().
  * @return
- *  - (RTE_ETH_RX_DESC_AVAIL): Descriptor is available for the hardware to
- *    receive a packet.
- *  - (RTE_ETH_RX_DESC_DONE): Descriptor is done, it is filled by hw, but
- *    not yet processed by the driver (i.e. in the receive queue).
- *  - (RTE_ETH_RX_DESC_UNAVAIL): Descriptor is unavailable, either hold by
- *    the driver and not yet returned to hw, or reserved by the hw.
- *  - (-EINVAL) bad descriptor offset.
- *  - (-ENOTSUP) if the device does not support this function.
- *  - (-ENODEV) bad port or queue (only if compiled with debug).
+ *   - (0) if successful.
+ *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
+ *     that operation.
+ *   - (-ENODEV) if *port_id* invalid.
  */
-static inline int
-rte_eth_rx_descriptor_status(uint16_t port_id, uint16_t queue_id,
-	uint16_t offset)
-{
-	struct rte_eth_dev *dev;
-	void *rxq;
-
-#ifdef RTE_LIBRTE_ETHDEV_DEBUG
-	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
-#endif
-	dev = &rte_eth_devices[port_id];
-#ifdef RTE_LIBRTE_ETHDEV_DEBUG
-	if (queue_id >= dev->data->nb_rx_queues)
-		return -ENODEV;
-#endif
-	RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_descriptor_status, -ENOTSUP);
-	rxq = dev->data->rx_queues[queue_id];
-
-	return (*dev->dev_ops->rx_descriptor_status)(rxq, offset);
-}
-
-#define RTE_ETH_TX_DESC_FULL    0 /**< Desc filled for hw, waiting xmit. */
-#define RTE_ETH_TX_DESC_DONE    1 /**< Desc done, packet is transmitted. */
-#define RTE_ETH_TX_DESC_UNAVAIL 2 /**< Desc used by driver or hw. */
+int rte_eth_dev_rx_intr_enable(uint16_t port_id, uint16_t queue_id);
 
 /**
- * Check the status of a Tx descriptor in the queue.
- *
- * It should be called in a similar context than the Tx function:
- * - on a dataplane core
- * - not concurrently on the same queue
- *
- * Since it's a dataplane function, no check is performed on port_id and
- * queue_id. The caller must therefore ensure that the port is enabled
- * and the queue is configured and running.
+ * When lcore wakes up from rx interrupt indicating packet coming, disable rx
+ * interrupt and returns to polling mode.
  *
- * Note: accessing to a random descriptor in the ring may trigger cache
- * misses and have a performance impact.
+ * The rte_eth_dev_rx_intr_disable() function disables rx queue
+ * interrupt on specific rx queue of a port.
  *
  * @param port_id
- *  A valid port identifier of the Ethernet device which.
+ *   The port identifier of the Ethernet device.
  * @param queue_id
- *  A valid Tx queue identifier on this port.
- * @param offset
- *  The offset of the descriptor starting from tail (0 is the place where
- *  the next packet will be send).
- *
+ *   The index of the receive queue from which to retrieve input packets.
+ *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
+ *   to rte_eth_dev_configure().
  * @return
- *  - (RTE_ETH_TX_DESC_FULL) Descriptor is being processed by the hw, i.e.
- *    in the transmit queue.
- *  - (RTE_ETH_TX_DESC_DONE) Hardware is done with this descriptor, it can
- *    be reused by the driver.
- *  - (RTE_ETH_TX_DESC_UNAVAIL): Descriptor is unavailable, reserved by the
- *    driver or the hardware.
- *  - (-EINVAL) bad descriptor offset.
- *  - (-ENOTSUP) if the device does not support this function.
- *  - (-ENODEV) bad port or queue (only if compiled with debug).
+ *   - (0) if successful.
+ *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
+ *     that operation.
+ *   - (-ENODEV) if *port_id* invalid.
  */
-static inline int rte_eth_tx_descriptor_status(uint16_t port_id,
-	uint16_t queue_id, uint16_t offset)
-{
-	struct rte_eth_dev *dev;
-	void *txq;
-
-#ifdef RTE_LIBRTE_ETHDEV_DEBUG
-	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
-#endif
-	dev = &rte_eth_devices[port_id];
-#ifdef RTE_LIBRTE_ETHDEV_DEBUG
-	if (queue_id >= dev->data->nb_tx_queues)
-		return -ENODEV;
-#endif
-	RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->tx_descriptor_status, -ENOTSUP);
-	txq = dev->data->tx_queues[queue_id];
-
-	return (*dev->dev_ops->tx_descriptor_status)(txq, offset);
-}
+int rte_eth_dev_rx_intr_disable(uint16_t port_id, uint16_t queue_id);
 
 /**
- * Send a burst of output packets on a transmit queue of an Ethernet device.
- *
- * The rte_eth_tx_burst() function is invoked to transmit output packets
- * on the output queue *queue_id* of the Ethernet device designated by its
- * *port_id*.
- * The *nb_pkts* parameter is the number of packets to send which are
- * supplied in the *tx_pkts* array of *rte_mbuf* structures, each of them
- * allocated from a pool created with rte_pktmbuf_pool_create().
- * The rte_eth_tx_burst() function loops, sending *nb_pkts* packets,
- * up to the number of transmit descriptors available in the TX ring of the
- * transmit queue.
- * For each packet to send, the rte_eth_tx_burst() function performs
- * the following operations:
- *
- * - Pick up the next available descriptor in the transmit ring.
- *
- * - Free the network buffer previously sent with that descriptor, if any.
- *
- * - Initialize the transmit descriptor with the information provided
- *   in the *rte_mbuf data structure.
- *
- * In the case of a segmented packet composed of a list of *rte_mbuf* buffers,
- * the rte_eth_tx_burst() function uses several transmit descriptors
- * of the ring.
- *
- * The rte_eth_tx_burst() function returns the number of packets it
- * actually sent. A return value equal to *nb_pkts* means that all packets
- * have been sent, and this is likely to signify that other output packets
- * could be immediately transmitted again. Applications that implement a
- * "send as many packets to transmit as possible" policy can check this
- * specific case and keep invoking the rte_eth_tx_burst() function until
- * a value less than *nb_pkts* is returned.
- *
- * It is the responsibility of the rte_eth_tx_burst() function to
- * transparently free the memory buffers of packets previously sent.
- * This feature is driven by the *tx_free_thresh* value supplied to the
- * rte_eth_dev_configure() function at device configuration time.
- * When the number of free TX descriptors drops below this threshold, the
- * rte_eth_tx_burst() function must [attempt to] free the *rte_mbuf*  buffers
- * of those packets whose transmission was effectively completed.
+ * RX Interrupt control per port.
  *
- * If the PMD is DEV_TX_OFFLOAD_MT_LOCKFREE capable, multiple threads can
- * invoke this function concurrently on the same tx queue without SW lock.
- * @see rte_eth_dev_info_get, struct rte_eth_txconf::txq_flags
+ * @param port_id
+ *   The port identifier of the Ethernet device.
+ * @param epfd
+ *   Epoll instance fd which the intr vector associated to.
+ *   Using RTE_EPOLL_PER_THREAD allows to use per thread epoll instance.
+ * @param op
+ *   The operation be performed for the vector.
+ *   Operation type of {RTE_INTR_EVENT_ADD, RTE_INTR_EVENT_DEL}.
+ * @param data
+ *   User raw data.
+ * @return
+ *   - On success, zero.
+ *   - On failure, a negative value.
+ */
+int rte_eth_dev_rx_intr_ctl(uint16_t port_id, int epfd, int op, void *data);
+
+/**
+ * RX Interrupt control per queue.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
  * @param queue_id
- *   The index of the transmit queue through which output packets must be
- *   sent.
- *   The value must be in the range [0, nb_tx_queue - 1] previously supplied
+ *   The index of the receive queue from which to retrieve input packets.
+ *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
  *   to rte_eth_dev_configure().
- * @param tx_pkts
- *   The address of an array of *nb_pkts* pointers to *rte_mbuf* structures
- *   which contain the output packets.
- * @param nb_pkts
- *   The maximum number of packets to transmit.
+ * @param epfd
+ *   Epoll instance fd which the intr vector associated to.
+ *   Using RTE_EPOLL_PER_THREAD allows to use per thread epoll instance.
+ * @param op
+ *   The operation be performed for the vector.
+ *   Operation type of {RTE_INTR_EVENT_ADD, RTE_INTR_EVENT_DEL}.
+ * @param data
+ *   User raw data.
  * @return
- *   The number of output packets actually stored in transmit descriptors of
- *   the transmit ring. The return value can be less than the value of the
- *   *tx_pkts* parameter when the transmit ring is full or has been filled up.
+ *   - On success, zero.
+ *   - On failure, a negative value.
  */
-static inline uint16_t
-rte_eth_tx_burst(uint16_t port_id, uint16_t queue_id,
-		 struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
-{
-	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
-
-#ifdef RTE_LIBRTE_ETHDEV_DEBUG
-	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, 0);
-	RTE_FUNC_PTR_OR_ERR_RET(*dev->tx_pkt_burst, 0);
-
-	if (queue_id >= dev->data->nb_tx_queues) {
-		RTE_PMD_DEBUG_TRACE("Invalid TX queue_id=%d\n", queue_id);
-		return 0;
-	}
-#endif
-
-#ifdef RTE_ETHDEV_RXTX_CALLBACKS
-	struct rte_eth_rxtx_callback *cb = dev->pre_tx_burst_cbs[queue_id];
-
-	if (unlikely(cb != NULL)) {
-		do {
-			nb_pkts = cb->fn.tx(port_id, queue_id, tx_pkts, nb_pkts,
-					cb->param);
-			cb = cb->next;
-		} while (cb != NULL);
-	}
-#endif
-
-	return (*dev->tx_pkt_burst)(dev->data->tx_queues[queue_id], tx_pkts, nb_pkts);
-}
+int rte_eth_dev_rx_intr_ctl_q(uint16_t port_id, uint16_t queue_id,
+			      int epfd, int op, void *data);
 
 /**
- * @warning
- * @b EXPERIMENTAL: this API may change without prior notice
- *
- * Process a burst of output packets on a transmit queue of an Ethernet device.
- *
- * The rte_eth_tx_prepare() function is invoked to prepare output packets to be
- * transmitted on the output queue *queue_id* of the Ethernet device designated
- * by its *port_id*.
- * The *nb_pkts* parameter is the number of packets to be prepared which are
- * supplied in the *tx_pkts* array of *rte_mbuf* structures, each of them
- * allocated from a pool created with rte_pktmbuf_pool_create().
- * For each packet to send, the rte_eth_tx_prepare() function performs
- * the following operations:
- *
- * - Check if packet meets devices requirements for tx offloads.
- *
- * - Check limitations about number of segments.
- *
- * - Check additional requirements when debug is enabled.
- *
- * - Update and/or reset required checksums when tx offload is set for packet.
- *
- * Since this function can modify packet data, provided mbufs must be safely
- * writable (e.g. modified data cannot be in shared segment).
- *
- * The rte_eth_tx_prepare() function returns the number of packets ready to be
- * sent. A return value equal to *nb_pkts* means that all packets are valid and
- * ready to be sent, otherwise stops processing on the first invalid packet and
- * leaves the rest packets untouched.
- *
- * When this functionality is not implemented in the driver, all packets are
- * are returned untouched.
+ * Turn on the LED on the Ethernet device.
+ * This function turns on the LED on the Ethernet device.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- *   The value must be a valid port id.
- * @param queue_id
- *   The index of the transmit queue through which output packets must be
- *   sent.
- *   The value must be in the range [0, nb_tx_queue - 1] previously supplied
- *   to rte_eth_dev_configure().
- * @param tx_pkts
- *   The address of an array of *nb_pkts* pointers to *rte_mbuf* structures
- *   which contain the output packets.
- * @param nb_pkts
- *   The maximum number of packets to process.
  * @return
- *   The number of packets correct and ready to be sent. The return value can be
- *   less than the value of the *tx_pkts* parameter when some packet doesn't
- *   meet devices requirements with rte_errno set appropriately:
- *   - -EINVAL: offload flags are not correctly set
- *   - -ENOTSUP: the offload feature is not supported by the hardware
- *
+ *   - (0) if successful.
+ *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
+ *     that operation.
+ *   - (-ENODEV) if *port_id* invalid.
  */
+int  rte_eth_led_on(uint16_t port_id);
 
-#ifndef RTE_ETHDEV_TX_PREPARE_NOOP
-
-static inline uint16_t
-rte_eth_tx_prepare(uint16_t port_id, uint16_t queue_id,
-		struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
-{
-	struct rte_eth_dev *dev;
-
-#ifdef RTE_LIBRTE_ETHDEV_DEBUG
-	if (!rte_eth_dev_is_valid_port(port_id)) {
-		RTE_PMD_DEBUG_TRACE("Invalid TX port_id=%d\n", port_id);
-		rte_errno = -EINVAL;
-		return 0;
-	}
-#endif
-
-	dev = &rte_eth_devices[port_id];
-
-#ifdef RTE_LIBRTE_ETHDEV_DEBUG
-	if (queue_id >= dev->data->nb_tx_queues) {
-		RTE_PMD_DEBUG_TRACE("Invalid TX queue_id=%d\n", queue_id);
-		rte_errno = -EINVAL;
-		return 0;
-	}
-#endif
-
-	if (!dev->tx_pkt_prepare)
-		return nb_pkts;
-
-	return (*dev->tx_pkt_prepare)(dev->data->tx_queues[queue_id],
-			tx_pkts, nb_pkts);
-}
-
-#else
-
-/*
- * Native NOOP operation for compilation targets which doesn't require any
- * preparations steps, and functional NOOP may introduce unnecessary performance
- * drop.
+/**
+ * Turn off the LED on the Ethernet device.
+ * This function turns off the LED on the Ethernet device.
  *
- * Generally this is not a good idea to turn it on globally and didn't should
- * be used if behavior of tx_preparation can change.
+ * @param port_id
+ *   The port identifier of the Ethernet device.
+ * @return
+ *   - (0) if successful.
+ *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
+ *     that operation.
+ *   - (-ENODEV) if *port_id* invalid.
  */
-
-static inline uint16_t
-rte_eth_tx_prepare(__rte_unused uint16_t port_id,
-		__rte_unused uint16_t queue_id,
-		__rte_unused struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
-{
-	return nb_pkts;
-}
-
-#endif
-
-typedef void (*buffer_tx_error_fn)(struct rte_mbuf **unsent, uint16_t count,
-		void *userdata);
+int  rte_eth_led_off(uint16_t port_id);
 
 /**
- * Structure used to buffer packets for future TX
- * Used by APIs rte_eth_tx_buffer and rte_eth_tx_buffer_flush
+ * Get current status of the Ethernet link flow control for Ethernet device
+ *
+ * @param port_id
+ *   The port identifier of the Ethernet device.
+ * @param fc_conf
+ *   The pointer to the structure where to store the flow control parameters.
+ * @return
+ *   - (0) if successful.
+ *   - (-ENOTSUP) if hardware doesn't support flow control.
+ *   - (-ENODEV)  if *port_id* invalid.
  */
-struct rte_eth_dev_tx_buffer {
-	buffer_tx_error_fn error_callback;
-	void *error_userdata;
-	uint16_t size;           /**< Size of buffer for buffered tx */
-	uint16_t length;         /**< Number of packets in the array */
-	struct rte_mbuf *pkts[];
-	/**< Pending packets to be sent on explicit flush or when full */
-};
+int rte_eth_dev_flow_ctrl_get(uint16_t port_id,
+			      struct rte_eth_fc_conf *fc_conf);
 
 /**
- * Calculate the size of the tx buffer.
+ * Configure the Ethernet link flow control for Ethernet device
  *
- * @param sz
- *   Number of stored packets.
+ * @param port_id
+ *   The port identifier of the Ethernet device.
+ * @param fc_conf
+ *   The pointer to the structure of the flow control parameters.
+ * @return
+ *   - (0) if successful.
+ *   - (-ENOTSUP) if hardware doesn't support flow control mode.
+ *   - (-ENODEV)  if *port_id* invalid.
+ *   - (-EINVAL)  if bad parameter
+ *   - (-EIO)     if flow control setup failure
  */
-#define RTE_ETH_TX_BUFFER_SIZE(sz) \
-	(sizeof(struct rte_eth_dev_tx_buffer) + (sz) * sizeof(struct rte_mbuf *))
+int rte_eth_dev_flow_ctrl_set(uint16_t port_id,
+			      struct rte_eth_fc_conf *fc_conf);
 
 /**
- * Initialize default values for buffered transmitting
+ * Configure the Ethernet priority flow control under DCB environment
+ * for Ethernet device.
  *
- * @param buffer
- *   Tx buffer to be initialized.
- * @param size
- *   Buffer size
+ * @param port_id
+ * The port identifier of the Ethernet device.
+ * @param pfc_conf
+ * The pointer to the structure of the priority flow control parameters.
  * @return
- *   0 if no error
+ *   - (0) if successful.
+ *   - (-ENOTSUP) if hardware doesn't support priority flow control mode.
+ *   - (-ENODEV)  if *port_id* invalid.
+ *   - (-EINVAL)  if bad parameter
+ *   - (-EIO)     if flow control setup failure
  */
-int
-rte_eth_tx_buffer_init(struct rte_eth_dev_tx_buffer *buffer, uint16_t size);
+int rte_eth_dev_priority_flow_ctrl_set(uint16_t port_id,
+				struct rte_eth_pfc_conf *pfc_conf);
 
 /**
- * Send any packets queued up for transmission on a port and HW queue
- *
- * This causes an explicit flush of packets previously buffered via the
- * rte_eth_tx_buffer() function. It returns the number of packets successfully
- * sent to the NIC, and calls the error callback for any unsent packets. Unless
- * explicitly set up otherwise, the default callback simply frees the unsent
- * packets back to the owning mempool.
+ * Add a MAC address to an internal array of addresses used to enable whitelist
+ * filtering to accept packets only if the destination MAC address matches.
  *
- * @param port_id
+ * @param port
  *   The port identifier of the Ethernet device.
- * @param queue_id
- *   The index of the transmit queue through which output packets must be
- *   sent.
- *   The value must be in the range [0, nb_tx_queue - 1] previously supplied
- *   to rte_eth_dev_configure().
- * @param buffer
- *   Buffer of packets to be transmit.
+ * @param mac_addr
+ *   The MAC address to add.
+ * @param pool
+ *   VMDq pool index to associate address with (if VMDq is enabled). If VMDq is
+ *   not enabled, this should be set to 0.
  * @return
- *   The number of packets successfully sent to the Ethernet device. The error
- *   callback is called for any packets which could not be sent.
+ *   - (0) if successfully added or *mac_addr" was already added.
+ *   - (-ENOTSUP) if hardware doesn't support this feature.
+ *   - (-ENODEV) if *port* is invalid.
+ *   - (-ENOSPC) if no more MAC addresses can be added.
+ *   - (-EINVAL) if MAC address is invalid.
  */
-static inline uint16_t
-rte_eth_tx_buffer_flush(uint16_t port_id, uint16_t queue_id,
-		struct rte_eth_dev_tx_buffer *buffer)
-{
-	uint16_t sent;
-	uint16_t to_send = buffer->length;
-
-	if (to_send == 0)
-		return 0;
-
-	sent = rte_eth_tx_burst(port_id, queue_id, buffer->pkts, to_send);
-
-	buffer->length = 0;
-
-	/* All packets sent, or to be dealt with by callback below */
-	if (unlikely(sent != to_send))
-		buffer->error_callback(&buffer->pkts[sent], to_send - sent,
-				buffer->error_userdata);
-
-	return sent;
-}
+int rte_eth_dev_mac_addr_add(uint16_t port, struct ether_addr *mac_addr,
+				uint32_t pool);
 
 /**
- * Buffer a single packet for future transmission on a port and queue
- *
- * This function takes a single mbuf/packet and buffers it for later
- * transmission on the particular port and queue specified. Once the buffer is
- * full of packets, an attempt will be made to transmit all the buffered
- * packets. In case of error, where not all packets can be transmitted, a
- * callback is called with the unsent packets as a parameter. If no callback
- * is explicitly set up, the unsent packets are just freed back to the owning
- * mempool. The function returns the number of packets actually sent i.e.
- * 0 if no buffer flush occurred, otherwise the number of packets successfully
- * flushed
+ * Remove a MAC address from the internal array of addresses.
  *
- * @param port_id
+ * @param port
  *   The port identifier of the Ethernet device.
- * @param queue_id
- *   The index of the transmit queue through which output packets must be
- *   sent.
- *   The value must be in the range [0, nb_tx_queue - 1] previously supplied
- *   to rte_eth_dev_configure().
- * @param buffer
- *   Buffer used to collect packets to be sent.
- * @param tx_pkt
- *   Pointer to the packet mbuf to be sent.
+ * @param mac_addr
+ *   MAC address to remove.
  * @return
- *   0 = packet has been buffered for later transmission
- *   N > 0 = packet has been buffered, and the buffer was subsequently flushed,
- *     causing N packets to be sent, and the error callback to be called for
- *     the rest.
+ *   - (0) if successful, or *mac_addr* didn't exist.
+ *   - (-ENOTSUP) if hardware doesn't support.
+ *   - (-ENODEV) if *port* invalid.
+ *   - (-EADDRINUSE) if attempting to remove the default MAC address
  */
-static __rte_always_inline uint16_t
-rte_eth_tx_buffer(uint16_t port_id, uint16_t queue_id,
-		struct rte_eth_dev_tx_buffer *buffer, struct rte_mbuf *tx_pkt)
-{
-	buffer->pkts[buffer->length++] = tx_pkt;
-	if (buffer->length < buffer->size)
-		return 0;
-
-	return rte_eth_tx_buffer_flush(port_id, queue_id, buffer);
-}
+int rte_eth_dev_mac_addr_remove(uint16_t port, struct ether_addr *mac_addr);
 
 /**
- * Configure a callback for buffered packets which cannot be sent
- *
- * Register a specific callback to be called when an attempt is made to send
- * all packets buffered on an ethernet port, but not all packets can
- * successfully be sent. The callback registered here will be called only
- * from calls to rte_eth_tx_buffer() and rte_eth_tx_buffer_flush() APIs.
- * The default callback configured for each queue by default just frees the
- * packets back to the calling mempool. If additional behaviour is required,
- * for example, to count dropped packets, or to retry transmission of packets
- * which cannot be sent, this function should be used to register a suitable
- * callback function to implement the desired behaviour.
- * The example callback "rte_eth_count_unsent_packet_callback()" is also
- * provided as reference.
+ * Set the default MAC address.
  *
- * @param buffer
+ * @param port
  *   The port identifier of the Ethernet device.
- * @param callback
- *   The function to be used as the callback.
- * @param userdata
- *   Arbitrary parameter to be passed to the callback function
+ * @param mac_addr
+ *   New default MAC address.
  * @return
- *   0 on success, or -1 on error with rte_errno set appropriately
+ *   - (0) if successful, or *mac_addr* didn't exist.
+ *   - (-ENOTSUP) if hardware doesn't support.
+ *   - (-ENODEV) if *port* invalid.
+ *   - (-EINVAL) if MAC address is invalid.
  */
-int
-rte_eth_tx_buffer_set_err_callback(struct rte_eth_dev_tx_buffer *buffer,
-		buffer_tx_error_fn callback, void *userdata);
+int rte_eth_dev_default_mac_addr_set(uint16_t port,
+		struct ether_addr *mac_addr);
 
 /**
- * Callback function for silently dropping unsent buffered packets.
+ * Update Redirection Table(RETA) of Receive Side Scaling of Ethernet device.
  *
- * This function can be passed to rte_eth_tx_buffer_set_err_callback() to
- * adjust the default behavior when buffered packets cannot be sent. This
- * function drops any unsent packets silently and is used by tx buffered
- * operations as default behavior.
+ * @param port
+ *   The port identifier of the Ethernet device.
+ * @param reta_conf
+ *   RETA to update.
+ * @param reta_size
+ *   Redirection table size. The table size can be queried by
+ *   rte_eth_dev_info_get().
+ * @return
+ *   - (0) if successful.
+ *   - (-ENOTSUP) if hardware doesn't support.
+ *   - (-EINVAL) if bad parameter.
+ */
+int rte_eth_dev_rss_reta_update(uint16_t port,
+				struct rte_eth_rss_reta_entry64 *reta_conf,
+				uint16_t reta_size);
+
+ /**
+ * Query Redirection Table(RETA) of Receive Side Scaling of Ethernet device.
  *
- * NOTE: this function should not be called directly, instead it should be used
- *       as a callback for packet buffering.
+ * @param port
+ *   The port identifier of the Ethernet device.
+ * @param reta_conf
+ *   RETA to query.
+ * @param reta_size
+ *   Redirection table size. The table size can be queried by
+ *   rte_eth_dev_info_get().
+ * @return
+ *   - (0) if successful.
+ *   - (-ENOTSUP) if hardware doesn't support.
+ *   - (-EINVAL) if bad parameter.
+ */
+int rte_eth_dev_rss_reta_query(uint16_t port,
+			       struct rte_eth_rss_reta_entry64 *reta_conf,
+			       uint16_t reta_size);
+
+ /**
+ * Updates unicast hash table for receiving packet with the given destination
+ * MAC address, and the packet is routed to all VFs for which the RX mode is
+ * accept packets that match the unicast hash table.
  *
- * NOTE: when configuring this function as a callback with
- *       rte_eth_tx_buffer_set_err_callback(), the final, userdata parameter
- *       should point to an uint64_t value.
+ * @param port
+ *   The port identifier of the Ethernet device.
+ * @param addr
+ *   Unicast MAC address.
+ * @param on
+ *    1 - Set an unicast hash bit for receiving packets with the MAC address.
+ *    0 - Clear an unicast hash bit.
+ * @return
+ *   - (0) if successful.
+ *   - (-ENOTSUP) if hardware doesn't support.
+  *  - (-ENODEV) if *port_id* invalid.
+ *   - (-EINVAL) if bad parameter.
+ */
+int rte_eth_dev_uc_hash_table_set(uint16_t port, struct ether_addr *addr,
+				  uint8_t on);
+
+ /**
+ * Updates all unicast hash bitmaps for receiving packet with any Unicast
+ * Ethernet MAC addresses,the packet is routed to all VFs for which the RX
+ * mode is accept packets that match the unicast hash table.
  *
- * @param pkts
- *   The previously buffered packets which could not be sent
- * @param unsent
- *   The number of unsent packets in the pkts array
- * @param userdata
- *   Not used
+ * @param port
+ *   The port identifier of the Ethernet device.
+ * @param on
+ *    1 - Set all unicast hash bitmaps for receiving all the Ethernet
+ *         MAC addresses
+ *    0 - Clear all unicast hash bitmaps
+ * @return
+ *   - (0) if successful.
+ *   - (-ENOTSUP) if hardware doesn't support.
+  *  - (-ENODEV) if *port_id* invalid.
+ *   - (-EINVAL) if bad parameter.
  */
-void
-rte_eth_tx_buffer_drop_callback(struct rte_mbuf **pkts, uint16_t unsent,
-		void *userdata);
+int rte_eth_dev_uc_all_hash_table_set(uint16_t port, uint8_t on);
 
 /**
- * Callback function for tracking unsent buffered packets.
- *
- * This function can be passed to rte_eth_tx_buffer_set_err_callback() to
- * adjust the default behavior when buffered packets cannot be sent. This
- * function drops any unsent packets, but also updates a user-supplied counter
- * to track the overall number of packets dropped. The counter should be an
- * uint64_t variable.
- *
- * NOTE: this function should not be called directly, instead it should be used
- *       as a callback for packet buffering.
+ * Set a traffic mirroring rule on an Ethernet device
  *
- * NOTE: when configuring this function as a callback with
- *       rte_eth_tx_buffer_set_err_callback(), the final, userdata parameter
- *       should point to an uint64_t value.
+ * @param port_id
+ *   The port identifier of the Ethernet device.
+ * @param mirror_conf
+ *   The pointer to the traffic mirroring structure describing the mirroring rule.
+ *   The *rte_eth_vm_mirror_conf* structure includes the type of mirroring rule,
+ *   destination pool and the value of rule if enable vlan or pool mirroring.
  *
- * @param pkts
- *   The previously buffered packets which could not be sent
- * @param unsent
- *   The number of unsent packets in the pkts array
- * @param userdata
- *   Pointer to an uint64_t value, which will be incremented by unsent
+ * @param rule_id
+ *   The index of traffic mirroring rule, we support four separated rules.
+ * @param on
+ *   1 - Enable a mirroring rule.
+ *   0 - Disable a mirroring rule.
+ * @return
+ *   - (0) if successful.
+ *   - (-ENOTSUP) if hardware doesn't support this feature.
+ *   - (-ENODEV) if *port_id* invalid.
+ *   - (-EINVAL) if the mr_conf information is not correct.
  */
-void
-rte_eth_tx_buffer_count_callback(struct rte_mbuf **pkts, uint16_t unsent,
-		void *userdata);
+int rte_eth_mirror_rule_set(uint16_t port_id,
+			struct rte_eth_mirror_conf *mirror_conf,
+			uint8_t rule_id,
+			uint8_t on);
 
 /**
- * Request the driver to free mbufs currently cached by the driver. The
- * driver will only free the mbuf if it is no longer in use. It is the
- * application's responsibity to ensure rte_eth_tx_buffer_flush(..) is
- * called if needed.
+ * Reset a traffic mirroring rule on an Ethernet device.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param queue_id
- *   The index of the transmit queue through which output packets must be
- *   sent.
- *   The value must be in the range [0, nb_tx_queue - 1] previously supplied
- *   to rte_eth_dev_configure().
- * @param free_cnt
- *   Maximum number of packets to free. Use 0 to indicate all possible packets
- *   should be freed. Note that a packet may be using multiple mbufs.
+ * @param rule_id
+ *   The index of traffic mirroring rule, we support four separated rules.
  * @return
- *   Failure: < 0
- *     -ENODEV: Invalid interface
- *     -ENOTSUP: Driver does not support function
- *   Success: >= 0
- *     0-n: Number of packets freed. More packets may still remain in ring that
- *     are in use.
+ *   - (0) if successful.
+ *   - (-ENOTSUP) if hardware doesn't support this feature.
+ *   - (-ENODEV) if *port_id* invalid.
+ *   - (-EINVAL) if bad parameter.
  */
-int
-rte_eth_tx_done_cleanup(uint16_t port_id, uint16_t queue_id, uint32_t free_cnt);
+int rte_eth_mirror_rule_reset(uint16_t port_id,
+					 uint8_t rule_id);
 
 /**
- * The eth device event type for interrupt, and maybe others in the future.
- */
-enum rte_eth_event_type {
-	RTE_ETH_EVENT_UNKNOWN,  /**< unknown event type */
-	RTE_ETH_EVENT_INTR_LSC, /**< lsc interrupt event */
-	RTE_ETH_EVENT_QUEUE_STATE,
-				/**< queue state event (enabled/disabled) */
-	RTE_ETH_EVENT_INTR_RESET,
-			/**< reset interrupt event, sent to VF on PF reset */
-	RTE_ETH_EVENT_VF_MBOX,  /**< message from the VF received by PF */
-	RTE_ETH_EVENT_MACSEC,   /**< MACsec offload related event */
-	RTE_ETH_EVENT_INTR_RMV, /**< device removal event */
-	RTE_ETH_EVENT_MAX       /**< max value of this enum */
-};
-
-typedef int (*rte_eth_dev_cb_fn)(uint16_t port_id,
-		enum rte_eth_event_type event, void *cb_arg, void *ret_param);
-/**< user application callback to be registered for interrupts */
-
-
-
-/**
- * Register a callback function for specific port id.
- *
- * @param port_id
- *  Port id.
- * @param event
- *  Event interested.
- * @param cb_fn
- *  User supplied callback function to be called.
- * @param cb_arg
- *  Pointer to the parameters for the registered callback.
- *
- * @return
- *  - On success, zero.
- *  - On failure, a negative value.
- */
-int rte_eth_dev_callback_register(uint16_t port_id,
-			enum rte_eth_event_type event,
-		rte_eth_dev_cb_fn cb_fn, void *cb_arg);
-
-/**
- * Unregister a callback function for specific port id.
+ * Set the rate limitation for a queue on an Ethernet device.
  *
  * @param port_id
- *  Port id.
- * @param event
- *  Event interested.
- * @param cb_fn
- *  User supplied callback function to be called.
- * @param cb_arg
- *  Pointer to the parameters for the registered callback. -1 means to
- *  remove all for the same callback address and same event.
- *
+ *   The port identifier of the Ethernet device.
+ * @param queue_idx
+ *   The queue id.
+ * @param tx_rate
+ *   The tx rate in Mbps. Allocated from the total port link speed.
  * @return
- *  - On success, zero.
- *  - On failure, a negative value.
+ *   - (0) if successful.
+ *   - (-ENOTSUP) if hardware doesn't support this feature.
+ *   - (-ENODEV) if *port_id* invalid.
+ *   - (-EINVAL) if bad parameter.
  */
-int rte_eth_dev_callback_unregister(uint16_t port_id,
-			enum rte_eth_event_type event,
-		rte_eth_dev_cb_fn cb_fn, void *cb_arg);
+int rte_eth_set_queue_rate_limit(uint16_t port_id, uint16_t queue_idx,
+			uint16_t tx_rate);
 
-/**
- * When there is no rx packet coming in Rx Queue for a long time, we can
- * sleep lcore related to RX Queue for power saving, and enable rx interrupt
- * to be triggered when Rx packet arrives.
- *
- * The rte_eth_dev_rx_intr_enable() function enables rx queue
- * interrupt on specific rx queue of a port.
+ /**
+ * Configuration of Receive Side Scaling hash computation of Ethernet device.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param queue_id
- *   The index of the receive queue from which to retrieve input packets.
- *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
- *   to rte_eth_dev_configure().
+ * @param rss_conf
+ *   The new configuration to use for RSS hash computation on the port.
  * @return
  *   - (0) if successful.
- *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
- *     that operation.
- *   - (-ENODEV) if *port_id* invalid.
+ *   - (-ENODEV) if port identifier is invalid.
+ *   - (-ENOTSUP) if hardware doesn't support.
+ *   - (-EINVAL) if bad parameter.
  */
-int rte_eth_dev_rx_intr_enable(uint16_t port_id, uint16_t queue_id);
+int rte_eth_dev_rss_hash_update(uint16_t port_id,
+				struct rte_eth_rss_conf *rss_conf);
 
-/**
- * When lcore wakes up from rx interrupt indicating packet coming, disable rx
- * interrupt and returns to polling mode.
- *
- * The rte_eth_dev_rx_intr_disable() function disables rx queue
- * interrupt on specific rx queue of a port.
+ /**
+ * Retrieve current configuration of Receive Side Scaling hash computation
+ * of Ethernet device.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param queue_id
- *   The index of the receive queue from which to retrieve input packets.
- *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
- *   to rte_eth_dev_configure().
+ * @param rss_conf
+ *   Where to store the current RSS hash configuration of the Ethernet device.
  * @return
  *   - (0) if successful.
- *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
- *     that operation.
- *   - (-ENODEV) if *port_id* invalid.
+ *   - (-ENODEV) if port identifier is invalid.
+ *   - (-ENOTSUP) if hardware doesn't support RSS.
  */
-int rte_eth_dev_rx_intr_disable(uint16_t port_id, uint16_t queue_id);
+int
+rte_eth_dev_rss_hash_conf_get(uint16_t port_id,
+			      struct rte_eth_rss_conf *rss_conf);
 
-/**
- * RX Interrupt control per port.
+ /**
+ * Add UDP tunneling port for a specific type of tunnel.
+ * The packets with this UDP port will be identified as this type of tunnel.
+ * Before enabling any offloading function for a tunnel, users can call this API
+ * to change or add more UDP port for the tunnel. So the offloading function
+ * can take effect on the packets with the specific UDP port.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param epfd
- *   Epoll instance fd which the intr vector associated to.
- *   Using RTE_EPOLL_PER_THREAD allows to use per thread epoll instance.
- * @param op
- *   The operation be performed for the vector.
- *   Operation type of {RTE_INTR_EVENT_ADD, RTE_INTR_EVENT_DEL}.
- * @param data
- *   User raw data.
+ * @param tunnel_udp
+ *   UDP tunneling configuration.
+ *
  * @return
- *   - On success, zero.
- *   - On failure, a negative value.
+ *   - (0) if successful.
+ *   - (-ENODEV) if port identifier is invalid.
+ *   - (-ENOTSUP) if hardware doesn't support tunnel type.
  */
-int rte_eth_dev_rx_intr_ctl(uint16_t port_id, int epfd, int op, void *data);
+int
+rte_eth_dev_udp_tunnel_port_add(uint16_t port_id,
+				struct rte_eth_udp_tunnel *tunnel_udp);
 
-/**
- * RX Interrupt control per queue.
+ /**
+ * Delete UDP tunneling port a specific type of tunnel.
+ * The packets with this UDP port will not be identified as this type of tunnel
+ * any more.
+ * Before enabling any offloading function for a tunnel, users can call this API
+ * to delete a UDP port for the tunnel. So the offloading function will not take
+ * effect on the packets with the specific UDP port.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param queue_id
- *   The index of the receive queue from which to retrieve input packets.
- *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
- *   to rte_eth_dev_configure().
- * @param epfd
- *   Epoll instance fd which the intr vector associated to.
- *   Using RTE_EPOLL_PER_THREAD allows to use per thread epoll instance.
- * @param op
- *   The operation be performed for the vector.
- *   Operation type of {RTE_INTR_EVENT_ADD, RTE_INTR_EVENT_DEL}.
- * @param data
- *   User raw data.
+ * @param tunnel_udp
+ *   UDP tunneling configuration.
+ *
  * @return
- *   - On success, zero.
- *   - On failure, a negative value.
+ *   - (0) if successful.
+ *   - (-ENODEV) if port identifier is invalid.
+ *   - (-ENOTSUP) if hardware doesn't support tunnel type.
  */
-int rte_eth_dev_rx_intr_ctl_q(uint16_t port_id, uint16_t queue_id,
-			      int epfd, int op, void *data);
+int
+rte_eth_dev_udp_tunnel_port_delete(uint16_t port_id,
+				   struct rte_eth_udp_tunnel *tunnel_udp);
 
 /**
- * Turn on the LED on the Ethernet device.
- * This function turns on the LED on the Ethernet device.
+ * Check whether the filter type is supported on an Ethernet device.
+ * All the supported filter types are defined in 'rte_eth_ctrl.h'.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
+ * @param filter_type
+ *   Filter type.
  * @return
  *   - (0) if successful.
- *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
- *     that operation.
+ *   - (-ENOTSUP) if hardware doesn't support this filter type.
  *   - (-ENODEV) if *port_id* invalid.
  */
-int  rte_eth_led_on(uint16_t port_id);
+int rte_eth_dev_filter_supported(uint16_t port_id,
+		enum rte_filter_type filter_type);
 
 /**
- * Turn off the LED on the Ethernet device.
- * This function turns off the LED on the Ethernet device.
+ * Take operations to assigned filter type on an Ethernet device.
+ * All the supported operations and filter types are defined in 'rte_eth_ctrl.h'.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
+ * @param filter_type
+ *   Filter type.
+ * @param filter_op
+ *   Type of operation.
+ * @param arg
+ *   A pointer to arguments defined specifically for the operation.
  * @return
  *   - (0) if successful.
- *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
- *     that operation.
+ *   - (-ENOTSUP) if hardware doesn't support.
  *   - (-ENODEV) if *port_id* invalid.
+ *   - others depends on the specific operations implementation.
  */
-int  rte_eth_led_off(uint16_t port_id);
+int rte_eth_dev_filter_ctrl(uint16_t port_id, enum rte_filter_type filter_type,
+			enum rte_filter_op filter_op, void *arg);
 
 /**
- * Get current status of the Ethernet link flow control for Ethernet device
+ * Get DCB information on an Ethernet device.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param fc_conf
- *   The pointer to the structure where to store the flow control parameters.
+ * @param dcb_info
+ *   dcb information.
  * @return
  *   - (0) if successful.
- *   - (-ENOTSUP) if hardware doesn't support flow control.
- *   - (-ENODEV)  if *port_id* invalid.
+ *   - (-ENODEV) if port identifier is invalid.
+ *   - (-ENOTSUP) if hardware doesn't support.
  */
-int rte_eth_dev_flow_ctrl_get(uint16_t port_id,
-			      struct rte_eth_fc_conf *fc_conf);
+int rte_eth_dev_get_dcb_info(uint16_t port_id,
+			     struct rte_eth_dcb_info *dcb_info);
 
 /**
- * Configure the Ethernet link flow control for Ethernet device
+ * Add a callback to be called on packet RX on a given port and queue.
+ *
+ * This API configures a function to be called for each burst of
+ * packets received on a given NIC port queue. The return value is a pointer
+ * that can be used to later remove the callback using
+ * rte_eth_remove_rx_callback().
+ *
+ * Multiple functions are called in the order that they are added.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param fc_conf
- *   The pointer to the structure of the flow control parameters.
+ * @param queue_id
+ *   The queue on the Ethernet device on which the callback is to be added.
+ * @param fn
+ *   The callback function
+ * @param user_param
+ *   A generic pointer parameter which will be passed to each invocation of the
+ *   callback function on this port and queue.
+ *
  * @return
- *   - (0) if successful.
- *   - (-ENOTSUP) if hardware doesn't support flow control mode.
- *   - (-ENODEV)  if *port_id* invalid.
- *   - (-EINVAL)  if bad parameter
- *   - (-EIO)     if flow control setup failure
+ *   NULL on error.
+ *   On success, a pointer value which can later be used to remove the callback.
  */
-int rte_eth_dev_flow_ctrl_set(uint16_t port_id,
-			      struct rte_eth_fc_conf *fc_conf);
+void *rte_eth_add_rx_callback(uint16_t port_id, uint16_t queue_id,
+		rte_rx_callback_fn fn, void *user_param);
 
 /**
- * Configure the Ethernet priority flow control under DCB environment
- * for Ethernet device.
+ * Add a callback that must be called first on packet RX on a given port
+ * and queue.
+ *
+ * This API configures a first function to be called for each burst of
+ * packets received on a given NIC port queue. The return value is a pointer
+ * that can be used to later remove the callback using
+ * rte_eth_remove_rx_callback().
+ *
+ * Multiple functions are called in the order that they are added.
+ *
+ * @param port_id
+ *   The port identifier of the Ethernet device.
+ * @param queue_id
+ *   The queue on the Ethernet device on which the callback is to be added.
+ * @param fn
+ *   The callback function
+ * @param user_param
+ *   A generic pointer parameter which will be passed to each invocation of the
+ *   callback function on this port and queue.
  *
- * @param port_id
- * The port identifier of the Ethernet device.
- * @param pfc_conf
- * The pointer to the structure of the priority flow control parameters.
  * @return
- *   - (0) if successful.
- *   - (-ENOTSUP) if hardware doesn't support priority flow control mode.
- *   - (-ENODEV)  if *port_id* invalid.
- *   - (-EINVAL)  if bad parameter
- *   - (-EIO)     if flow control setup failure
+ *   NULL on error.
+ *   On success, a pointer value which can later be used to remove the callback.
  */
-int rte_eth_dev_priority_flow_ctrl_set(uint16_t port_id,
-				struct rte_eth_pfc_conf *pfc_conf);
+void *rte_eth_add_first_rx_callback(uint16_t port_id, uint16_t queue_id,
+		rte_rx_callback_fn fn, void *user_param);
 
 /**
- * Add a MAC address to an internal array of addresses used to enable whitelist
- * filtering to accept packets only if the destination MAC address matches.
+ * Add a callback to be called on packet TX on a given port and queue.
  *
- * @param port
+ * This API configures a function to be called for each burst of
+ * packets sent on a given NIC port queue. The return value is a pointer
+ * that can be used to later remove the callback using
+ * rte_eth_remove_tx_callback().
+ *
+ * Multiple functions are called in the order that they are added.
+ *
+ * @param port_id
  *   The port identifier of the Ethernet device.
- * @param mac_addr
- *   The MAC address to add.
- * @param pool
- *   VMDq pool index to associate address with (if VMDq is enabled). If VMDq is
- *   not enabled, this should be set to 0.
+ * @param queue_id
+ *   The queue on the Ethernet device on which the callback is to be added.
+ * @param fn
+ *   The callback function
+ * @param user_param
+ *   A generic pointer parameter which will be passed to each invocation of the
+ *   callback function on this port and queue.
+ *
  * @return
- *   - (0) if successfully added or *mac_addr" was already added.
- *   - (-ENOTSUP) if hardware doesn't support this feature.
- *   - (-ENODEV) if *port* is invalid.
- *   - (-ENOSPC) if no more MAC addresses can be added.
- *   - (-EINVAL) if MAC address is invalid.
+ *   NULL on error.
+ *   On success, a pointer value which can later be used to remove the callback.
  */
-int rte_eth_dev_mac_addr_add(uint16_t port, struct ether_addr *mac_addr,
-				uint32_t pool);
+void *rte_eth_add_tx_callback(uint16_t port_id, uint16_t queue_id,
+		rte_tx_callback_fn fn, void *user_param);
 
 /**
- * Remove a MAC address from the internal array of addresses.
+ * Remove an RX packet callback from a given port and queue.
  *
- * @param port
+ * This function is used to removed callbacks that were added to a NIC port
+ * queue using rte_eth_add_rx_callback().
+ *
+ * Note: the callback is removed from the callback list but it isn't freed
+ * since the it may still be in use. The memory for the callback can be
+ * subsequently freed back by the application by calling rte_free():
+ *
+ * - Immediately - if the port is stopped, or the user knows that no
+ *   callbacks are in flight e.g. if called from the thread doing RX/TX
+ *   on that queue.
+ *
+ * - After a short delay - where the delay is sufficient to allow any
+ *   in-flight callbacks to complete.
+ *
+ * @param port_id
  *   The port identifier of the Ethernet device.
- * @param mac_addr
- *   MAC address to remove.
+ * @param queue_id
+ *   The queue on the Ethernet device from which the callback is to be removed.
+ * @param user_cb
+ *   User supplied callback created via rte_eth_add_rx_callback().
+ *
  * @return
- *   - (0) if successful, or *mac_addr* didn't exist.
- *   - (-ENOTSUP) if hardware doesn't support.
- *   - (-ENODEV) if *port* invalid.
- *   - (-EADDRINUSE) if attempting to remove the default MAC address
+ *   - 0: Success. Callback was removed.
+ *   - -ENOTSUP: Callback support is not available.
+ *   - -EINVAL:  The port_id or the queue_id is out of range, or the callback
+ *               is NULL or not found for the port/queue.
  */
-int rte_eth_dev_mac_addr_remove(uint16_t port, struct ether_addr *mac_addr);
+int rte_eth_remove_rx_callback(uint16_t port_id, uint16_t queue_id,
+		struct rte_eth_rxtx_callback *user_cb);
 
 /**
- * Set the default MAC address.
+ * Remove a TX packet callback from a given port and queue.
  *
- * @param port
+ * This function is used to removed callbacks that were added to a NIC port
+ * queue using rte_eth_add_tx_callback().
+ *
+ * Note: the callback is removed from the callback list but it isn't freed
+ * since the it may still be in use. The memory for the callback can be
+ * subsequently freed back by the application by calling rte_free():
+ *
+ * - Immediately - if the port is stopped, or the user knows that no
+ *   callbacks are in flight e.g. if called from the thread doing RX/TX
+ *   on that queue.
+ *
+ * - After a short delay - where the delay is sufficient to allow any
+ *   in-flight callbacks to complete.
+ *
+ * @param port_id
  *   The port identifier of the Ethernet device.
- * @param mac_addr
- *   New default MAC address.
+ * @param queue_id
+ *   The queue on the Ethernet device from which the callback is to be removed.
+ * @param user_cb
+ *   User supplied callback created via rte_eth_add_tx_callback().
+ *
  * @return
- *   - (0) if successful, or *mac_addr* didn't exist.
- *   - (-ENOTSUP) if hardware doesn't support.
- *   - (-ENODEV) if *port* invalid.
- *   - (-EINVAL) if MAC address is invalid.
+ *   - 0: Success. Callback was removed.
+ *   - -ENOTSUP: Callback support is not available.
+ *   - -EINVAL:  The port_id or the queue_id is out of range, or the callback
+ *               is NULL or not found for the port/queue.
  */
-int rte_eth_dev_default_mac_addr_set(uint16_t port,
-		struct ether_addr *mac_addr);
+int rte_eth_remove_tx_callback(uint16_t port_id, uint16_t queue_id,
+		struct rte_eth_rxtx_callback *user_cb);
 
 /**
- * Update Redirection Table(RETA) of Receive Side Scaling of Ethernet device.
+ * Retrieve information about given port's RX queue.
  *
- * @param port
+ * @param port_id
  *   The port identifier of the Ethernet device.
- * @param reta_conf
- *   RETA to update.
- * @param reta_size
- *   Redirection table size. The table size can be queried by
- *   rte_eth_dev_info_get().
+ * @param queue_id
+ *   The RX queue on the Ethernet device for which information
+ *   will be retrieved.
+ * @param qinfo
+ *   A pointer to a structure of type *rte_eth_rxq_info_info* to be filled with
+ *   the information of the Ethernet device.
+ *
  * @return
- *   - (0) if successful.
- *   - (-ENOTSUP) if hardware doesn't support.
- *   - (-EINVAL) if bad parameter.
+ *   - 0: Success
+ *   - -ENOTSUP: routine is not supported by the device PMD.
+ *   - -EINVAL:  The port_id or the queue_id is out of range.
  */
-int rte_eth_dev_rss_reta_update(uint16_t port,
-				struct rte_eth_rss_reta_entry64 *reta_conf,
-				uint16_t reta_size);
+int rte_eth_rx_queue_info_get(uint16_t port_id, uint16_t queue_id,
+	struct rte_eth_rxq_info *qinfo);
 
- /**
- * Query Redirection Table(RETA) of Receive Side Scaling of Ethernet device.
+/**
+ * Retrieve information about given port's TX queue.
  *
- * @param port
+ * @param port_id
  *   The port identifier of the Ethernet device.
- * @param reta_conf
- *   RETA to query.
- * @param reta_size
- *   Redirection table size. The table size can be queried by
- *   rte_eth_dev_info_get().
+ * @param queue_id
+ *   The TX queue on the Ethernet device for which information
+ *   will be retrieved.
+ * @param qinfo
+ *   A pointer to a structure of type *rte_eth_txq_info_info* to be filled with
+ *   the information of the Ethernet device.
+ *
  * @return
- *   - (0) if successful.
- *   - (-ENOTSUP) if hardware doesn't support.
- *   - (-EINVAL) if bad parameter.
+ *   - 0: Success
+ *   - -ENOTSUP: routine is not supported by the device PMD.
+ *   - -EINVAL:  The port_id or the queue_id is out of range.
  */
-int rte_eth_dev_rss_reta_query(uint16_t port,
-			       struct rte_eth_rss_reta_entry64 *reta_conf,
-			       uint16_t reta_size);
+int rte_eth_tx_queue_info_get(uint16_t port_id, uint16_t queue_id,
+	struct rte_eth_txq_info *qinfo);
 
- /**
- * Updates unicast hash table for receiving packet with the given destination
- * MAC address, and the packet is routed to all VFs for which the RX mode is
- * accept packets that match the unicast hash table.
+/**
+ * Retrieve device registers and register attributes (number of registers and
+ * register size)
  *
- * @param port
+ * @param port_id
  *   The port identifier of the Ethernet device.
- * @param addr
- *   Unicast MAC address.
- * @param on
- *    1 - Set an unicast hash bit for receiving packets with the MAC address.
- *    0 - Clear an unicast hash bit.
+ * @param info
+ *   Pointer to rte_dev_reg_info structure to fill in. If info->data is
+ *   NULL the function fills in the width and length fields. If non-NULL
+ *   the registers are put into the buffer pointed at by the data field.
  * @return
  *   - (0) if successful.
  *   - (-ENOTSUP) if hardware doesn't support.
-  *  - (-ENODEV) if *port_id* invalid.
- *   - (-EINVAL) if bad parameter.
+ *   - (-ENODEV) if *port_id* invalid.
+ *   - others depends on the specific operations implementation.
  */
-int rte_eth_dev_uc_hash_table_set(uint16_t port, struct ether_addr *addr,
-				  uint8_t on);
+int rte_eth_dev_get_reg_info(uint16_t port_id, struct rte_dev_reg_info *info);
 
- /**
- * Updates all unicast hash bitmaps for receiving packet with any Unicast
- * Ethernet MAC addresses,the packet is routed to all VFs for which the RX
- * mode is accept packets that match the unicast hash table.
+/**
+ * Retrieve size of device EEPROM
  *
- * @param port
+ * @param port_id
  *   The port identifier of the Ethernet device.
- * @param on
- *    1 - Set all unicast hash bitmaps for receiving all the Ethernet
- *         MAC addresses
- *    0 - Clear all unicast hash bitmaps
  * @return
- *   - (0) if successful.
+ *   - (>=0) EEPROM size if successful.
  *   - (-ENOTSUP) if hardware doesn't support.
-  *  - (-ENODEV) if *port_id* invalid.
- *   - (-EINVAL) if bad parameter.
+ *   - (-ENODEV) if *port_id* invalid.
+ *   - others depends on the specific operations implementation.
  */
-int rte_eth_dev_uc_all_hash_table_set(uint16_t port, uint8_t on);
+int rte_eth_dev_get_eeprom_length(uint16_t port_id);
 
 /**
- * Set a traffic mirroring rule on an Ethernet device
+ * Retrieve EEPROM and EEPROM attribute
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param mirror_conf
- *   The pointer to the traffic mirroring structure describing the mirroring rule.
- *   The *rte_eth_vm_mirror_conf* structure includes the type of mirroring rule,
- *   destination pool and the value of rule if enable vlan or pool mirroring.
- *
- * @param rule_id
- *   The index of traffic mirroring rule, we support four separated rules.
- * @param on
- *   1 - Enable a mirroring rule.
- *   0 - Disable a mirroring rule.
+ * @param info
+ *   The template includes buffer for return EEPROM data and
+ *   EEPROM attributes to be filled.
  * @return
  *   - (0) if successful.
- *   - (-ENOTSUP) if hardware doesn't support this feature.
+ *   - (-ENOTSUP) if hardware doesn't support.
  *   - (-ENODEV) if *port_id* invalid.
- *   - (-EINVAL) if the mr_conf information is not correct.
+ *   - others depends on the specific operations implementation.
  */
-int rte_eth_mirror_rule_set(uint16_t port_id,
-			struct rte_eth_mirror_conf *mirror_conf,
-			uint8_t rule_id,
-			uint8_t on);
+int rte_eth_dev_get_eeprom(uint16_t port_id, struct rte_dev_eeprom_info *info);
 
 /**
- * Reset a traffic mirroring rule on an Ethernet device.
+ * Program EEPROM with provided data
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param rule_id
- *   The index of traffic mirroring rule, we support four separated rules.
+ * @param info
+ *   The template includes EEPROM data for programming and
+ *   EEPROM attributes to be filled
  * @return
  *   - (0) if successful.
- *   - (-ENOTSUP) if hardware doesn't support this feature.
+ *   - (-ENOTSUP) if hardware doesn't support.
  *   - (-ENODEV) if *port_id* invalid.
- *   - (-EINVAL) if bad parameter.
+ *   - others depends on the specific operations implementation.
  */
-int rte_eth_mirror_rule_reset(uint16_t port_id,
-					 uint8_t rule_id);
+int rte_eth_dev_set_eeprom(uint16_t port_id, struct rte_dev_eeprom_info *info);
 
 /**
- * Set the rate limitation for a queue on an Ethernet device.
+ * Set the list of multicast addresses to filter on an Ethernet device.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param queue_idx
- *   The queue id.
- * @param tx_rate
- *   The tx rate in Mbps. Allocated from the total port link speed.
+ * @param mc_addr_set
+ *   The array of multicast addresses to set. Equal to NULL when the function
+ *   is invoked to flush the set of filtered addresses.
+ * @param nb_mc_addr
+ *   The number of multicast addresses in the *mc_addr_set* array. Equal to 0
+ *   when the function is invoked to flush the set of filtered addresses.
  * @return
  *   - (0) if successful.
- *   - (-ENOTSUP) if hardware doesn't support this feature.
  *   - (-ENODEV) if *port_id* invalid.
- *   - (-EINVAL) if bad parameter.
+ *   - (-ENOTSUP) if PMD of *port_id* doesn't support multicast filtering.
+ *   - (-ENOSPC) if *port_id* has not enough multicast filtering resources.
  */
-int rte_eth_set_queue_rate_limit(uint16_t port_id, uint16_t queue_idx,
-			uint16_t tx_rate);
+int rte_eth_dev_set_mc_addr_list(uint16_t port_id,
+				 struct ether_addr *mc_addr_set,
+				 uint32_t nb_mc_addr);
 
- /**
- * Configuration of Receive Side Scaling hash computation of Ethernet device.
+/**
+ * Enable IEEE1588/802.1AS timestamping for an Ethernet device.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param rss_conf
- *   The new configuration to use for RSS hash computation on the port.
- * @return
- *   - (0) if successful.
- *   - (-ENODEV) if port identifier is invalid.
- *   - (-ENOTSUP) if hardware doesn't support.
- *   - (-EINVAL) if bad parameter.
- */
-int rte_eth_dev_rss_hash_update(uint16_t port_id,
-				struct rte_eth_rss_conf *rss_conf);
-
- /**
- * Retrieve current configuration of Receive Side Scaling hash computation
- * of Ethernet device.
  *
- * @param port_id
- *   The port identifier of the Ethernet device.
- * @param rss_conf
- *   Where to store the current RSS hash configuration of the Ethernet device.
  * @return
- *   - (0) if successful.
- *   - (-ENODEV) if port identifier is invalid.
- *   - (-ENOTSUP) if hardware doesn't support RSS.
+ *   - 0: Success.
+ *   - -ENODEV: The port ID is invalid.
+ *   - -ENOTSUP: The function is not supported by the Ethernet driver.
  */
-int
-rte_eth_dev_rss_hash_conf_get(uint16_t port_id,
-			      struct rte_eth_rss_conf *rss_conf);
+int rte_eth_timesync_enable(uint16_t port_id);
 
- /**
- * Add UDP tunneling port for a specific type of tunnel.
- * The packets with this UDP port will be identified as this type of tunnel.
- * Before enabling any offloading function for a tunnel, users can call this API
- * to change or add more UDP port for the tunnel. So the offloading function
- * can take effect on the packets with the specific UDP port.
+/**
+ * Disable IEEE1588/802.1AS timestamping for an Ethernet device.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param tunnel_udp
- *   UDP tunneling configuration.
  *
  * @return
- *   - (0) if successful.
- *   - (-ENODEV) if port identifier is invalid.
- *   - (-ENOTSUP) if hardware doesn't support tunnel type.
+ *   - 0: Success.
+ *   - -ENODEV: The port ID is invalid.
+ *   - -ENOTSUP: The function is not supported by the Ethernet driver.
  */
-int
-rte_eth_dev_udp_tunnel_port_add(uint16_t port_id,
-				struct rte_eth_udp_tunnel *tunnel_udp);
+int rte_eth_timesync_disable(uint16_t port_id);
 
- /**
- * Delete UDP tunneling port a specific type of tunnel.
- * The packets with this UDP port will not be identified as this type of tunnel
- * any more.
- * Before enabling any offloading function for a tunnel, users can call this API
- * to delete a UDP port for the tunnel. So the offloading function will not take
- * effect on the packets with the specific UDP port.
+/**
+ * Read an IEEE1588/802.1AS RX timestamp from an Ethernet device.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param tunnel_udp
- *   UDP tunneling configuration.
+ * @param timestamp
+ *   Pointer to the timestamp struct.
+ * @param flags
+ *   Device specific flags. Used to pass the RX timesync register index to
+ *   i40e. Unused in igb/ixgbe, pass 0 instead.
  *
  * @return
- *   - (0) if successful.
- *   - (-ENODEV) if port identifier is invalid.
- *   - (-ENOTSUP) if hardware doesn't support tunnel type.
+ *   - 0: Success.
+ *   - -EINVAL: No timestamp is available.
+ *   - -ENODEV: The port ID is invalid.
+ *   - -ENOTSUP: The function is not supported by the Ethernet driver.
  */
-int
-rte_eth_dev_udp_tunnel_port_delete(uint16_t port_id,
-				   struct rte_eth_udp_tunnel *tunnel_udp);
+int rte_eth_timesync_read_rx_timestamp(uint16_t port_id,
+		struct timespec *timestamp, uint32_t flags);
 
 /**
- * Check whether the filter type is supported on an Ethernet device.
- * All the supported filter types are defined in 'rte_eth_ctrl.h'.
+ * Read an IEEE1588/802.1AS TX timestamp from an Ethernet device.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param filter_type
- *   Filter type.
+ * @param timestamp
+ *   Pointer to the timestamp struct.
+ *
  * @return
- *   - (0) if successful.
- *   - (-ENOTSUP) if hardware doesn't support this filter type.
- *   - (-ENODEV) if *port_id* invalid.
+ *   - 0: Success.
+ *   - -EINVAL: No timestamp is available.
+ *   - -ENODEV: The port ID is invalid.
+ *   - -ENOTSUP: The function is not supported by the Ethernet driver.
  */
-int rte_eth_dev_filter_supported(uint16_t port_id,
-		enum rte_filter_type filter_type);
+int rte_eth_timesync_read_tx_timestamp(uint16_t port_id,
+		struct timespec *timestamp);
 
 /**
- * Take operations to assigned filter type on an Ethernet device.
- * All the supported operations and filter types are defined in 'rte_eth_ctrl.h'.
+ * Adjust the timesync clock on an Ethernet device.
+ *
+ * This is usually used in conjunction with other Ethdev timesync functions to
+ * synchronize the device time using the IEEE1588/802.1AS protocol.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param filter_type
- *   Filter type.
- * @param filter_op
- *   Type of operation.
- * @param arg
- *   A pointer to arguments defined specifically for the operation.
+ * @param delta
+ *   The adjustment in nanoseconds.
+ *
  * @return
- *   - (0) if successful.
- *   - (-ENOTSUP) if hardware doesn't support.
- *   - (-ENODEV) if *port_id* invalid.
- *   - others depends on the specific operations implementation.
+ *   - 0: Success.
+ *   - -ENODEV: The port ID is invalid.
+ *   - -ENOTSUP: The function is not supported by the Ethernet driver.
  */
-int rte_eth_dev_filter_ctrl(uint16_t port_id, enum rte_filter_type filter_type,
-			enum rte_filter_op filter_op, void *arg);
+int rte_eth_timesync_adjust_time(uint16_t port_id, int64_t delta);
 
 /**
- * Get DCB information on an Ethernet device.
+ * Read the time from the timesync clock on an Ethernet device.
+ *
+ * This is usually used in conjunction with other Ethdev timesync functions to
+ * synchronize the device time using the IEEE1588/802.1AS protocol.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param dcb_info
- *   dcb information.
+ * @param time
+ *   Pointer to the timespec struct that holds the time.
+ *
  * @return
- *   - (0) if successful.
- *   - (-ENODEV) if port identifier is invalid.
- *   - (-ENOTSUP) if hardware doesn't support.
+ *   - 0: Success.
  */
-int rte_eth_dev_get_dcb_info(uint16_t port_id,
-			     struct rte_eth_dcb_info *dcb_info);
+int rte_eth_timesync_read_time(uint16_t port_id, struct timespec *time);
 
 /**
- * Add a callback to be called on packet RX on a given port and queue.
- *
- * This API configures a function to be called for each burst of
- * packets received on a given NIC port queue. The return value is a pointer
- * that can be used to later remove the callback using
- * rte_eth_remove_rx_callback().
+ * Set the time of the timesync clock on an Ethernet device.
  *
- * Multiple functions are called in the order that they are added.
+ * This is usually used in conjunction with other Ethdev timesync functions to
+ * synchronize the device time using the IEEE1588/802.1AS protocol.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param queue_id
- *   The queue on the Ethernet device on which the callback is to be added.
- * @param fn
- *   The callback function
- * @param user_param
- *   A generic pointer parameter which will be passed to each invocation of the
- *   callback function on this port and queue.
+ * @param time
+ *   Pointer to the timespec struct that holds the time.
  *
  * @return
- *   NULL on error.
- *   On success, a pointer value which can later be used to remove the callback.
+ *   - 0: Success.
+ *   - -EINVAL: No timestamp is available.
+ *   - -ENODEV: The port ID is invalid.
+ *   - -ENOTSUP: The function is not supported by the Ethernet driver.
  */
-void *rte_eth_add_rx_callback(uint16_t port_id, uint16_t queue_id,
-		rte_rx_callback_fn fn, void *user_param);
+int rte_eth_timesync_write_time(uint16_t port_id, const struct timespec *time);
 
 /**
- * Add a callback that must be called first on packet RX on a given port
- * and queue.
- *
- * This API configures a first function to be called for each burst of
- * packets received on a given NIC port queue. The return value is a pointer
- * that can be used to later remove the callback using
- * rte_eth_remove_rx_callback().
- *
- * Multiple functions are called in the order that they are added.
+ * Config l2 tunnel ether type of an Ethernet device for filtering specific
+ * tunnel packets by ether type.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param queue_id
- *   The queue on the Ethernet device on which the callback is to be added.
- * @param fn
- *   The callback function
- * @param user_param
- *   A generic pointer parameter which will be passed to each invocation of the
- *   callback function on this port and queue.
+ * @param l2_tunnel
+ *   l2 tunnel configuration.
  *
  * @return
- *   NULL on error.
- *   On success, a pointer value which can later be used to remove the callback.
+ *   - (0) if successful.
+ *   - (-ENODEV) if port identifier is invalid.
+ *   - (-ENOTSUP) if hardware doesn't support tunnel type.
  */
-void *rte_eth_add_first_rx_callback(uint16_t port_id, uint16_t queue_id,
-		rte_rx_callback_fn fn, void *user_param);
+int
+rte_eth_dev_l2_tunnel_eth_type_conf(uint16_t port_id,
+				    struct rte_eth_l2_tunnel_conf *l2_tunnel);
 
 /**
- * Add a callback to be called on packet TX on a given port and queue.
- *
- * This API configures a function to be called for each burst of
- * packets sent on a given NIC port queue. The return value is a pointer
- * that can be used to later remove the callback using
- * rte_eth_remove_tx_callback().
- *
- * Multiple functions are called in the order that they are added.
+ * Enable/disable l2 tunnel offload functions. Include,
+ * 1, The ability of parsing a type of l2 tunnel of an Ethernet device.
+ *    Filtering, forwarding and offloading this type of tunnel packets depend on
+ *    this ability.
+ * 2, Stripping the l2 tunnel tag.
+ * 3, Insertion of the l2 tunnel tag.
+ * 4, Forwarding the packets based on the l2 tunnel tag.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param queue_id
- *   The queue on the Ethernet device on which the callback is to be added.
- * @param fn
- *   The callback function
- * @param user_param
- *   A generic pointer parameter which will be passed to each invocation of the
- *   callback function on this port and queue.
+ * @param l2_tunnel
+ *   l2 tunnel parameters.
+ * @param mask
+ *   Indicate the offload function.
+ * @param en
+ *   Enable or disable this function.
  *
  * @return
- *   NULL on error.
- *   On success, a pointer value which can later be used to remove the callback.
+ *   - (0) if successful.
+ *   - (-ENODEV) if port identifier is invalid.
+ *   - (-ENOTSUP) if hardware doesn't support tunnel type.
  */
-void *rte_eth_add_tx_callback(uint16_t port_id, uint16_t queue_id,
-		rte_tx_callback_fn fn, void *user_param);
+int
+rte_eth_dev_l2_tunnel_offload_set(uint16_t port_id,
+				  struct rte_eth_l2_tunnel_conf *l2_tunnel,
+				  uint32_t mask,
+				  uint8_t en);
 
 /**
- * Remove an RX packet callback from a given port and queue.
- *
- * This function is used to removed callbacks that were added to a NIC port
- * queue using rte_eth_add_rx_callback().
- *
- * Note: the callback is removed from the callback list but it isn't freed
- * since the it may still be in use. The memory for the callback can be
- * subsequently freed back by the application by calling rte_free():
- *
- * - Immediately - if the port is stopped, or the user knows that no
- *   callbacks are in flight e.g. if called from the thread doing RX/TX
- *   on that queue.
- *
- * - After a short delay - where the delay is sufficient to allow any
- *   in-flight callbacks to complete.
+* Get the port id from pci address or device name
+* Ex: 0000:2:00.0 or vdev name net_pcap0
+*
+* @param name
+*  pci address or name of the device
+* @param port_id
+*   pointer to port identifier of the device
+* @return
+*   - (0) if successful and port_id is filled.
+*   - (-ENODEV or -EINVAL) on failure.
+*/
+int
+rte_eth_dev_get_port_by_name(const char *name, uint16_t *port_id);
+
+/**
+* Get the device name from port id
+*
+* @param port_id
+*   pointer to port identifier of the device
+* @param name
+*  pci address or name of the device
+* @return
+*   - (0) if successful.
+*   - (-EINVAL) on failure.
+*/
+int
+rte_eth_dev_get_name_by_port(uint16_t port_id, char *name);
+
+/**
+ * Check that numbers of Rx and Tx descriptors satisfy descriptors limits from
+ * the ethernet device information, otherwise adjust them to boundaries.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param queue_id
- *   The queue on the Ethernet device from which the callback is to be removed.
- * @param user_cb
- *   User supplied callback created via rte_eth_add_rx_callback().
+ * @param nb_rx_desc
+ *   A pointer to a uint16_t where the number of receive
+ *   descriptors stored.
+ * @param nb_tx_desc
+ *   A pointer to a uint16_t where the number of transmit
+ *   descriptors stored.
+ * @return
+ *   - (0) if successful.
+ *   - (-ENOTSUP, -ENODEV or -EINVAL) on failure.
+ */
+int rte_eth_dev_adjust_nb_rx_tx_desc(uint16_t port_id,
+				     uint16_t *nb_rx_desc,
+				     uint16_t *nb_tx_desc);
+
+
+/**
+ * Test if a port supports specific mempool ops.
  *
+ * @param port_id
+ *   Port identifier of the Ethernet device.
+ * @param [in] pool
+ *   The name of the pool operations to test.
  * @return
- *   - 0: Success. Callback was removed.
- *   - -ENOTSUP: Callback support is not available.
- *   - -EINVAL:  The port_id or the queue_id is out of range, or the callback
- *               is NULL or not found for the port/queue.
+ *   - 0: best mempool ops choice for this port.
+ *   - 1: mempool ops are supported for this port.
+ *   - -ENOTSUP: mempool ops not supported for this port.
+ *   - -ENODEV: Invalid port Identifier.
+ *   - -EINVAL: Pool param is null.
  */
-int rte_eth_remove_rx_callback(uint16_t port_id, uint16_t queue_id,
-		struct rte_eth_rxtx_callback *user_cb);
+int
+rte_eth_dev_pool_ops_supported(uint16_t port_id, const char *pool);
+
+#include <rte_ethdev_core.h>
 
 /**
- * Remove a TX packet callback from a given port and queue.
  *
- * This function is used to removed callbacks that were added to a NIC port
- * queue using rte_eth_add_tx_callback().
+ * Retrieve a burst of input packets from a receive queue of an Ethernet
+ * device. The retrieved packets are stored in *rte_mbuf* structures whose
+ * pointers are supplied in the *rx_pkts* array.
  *
- * Note: the callback is removed from the callback list but it isn't freed
- * since the it may still be in use. The memory for the callback can be
- * subsequently freed back by the application by calling rte_free():
+ * The rte_eth_rx_burst() function loops, parsing the RX ring of the
+ * receive queue, up to *nb_pkts* packets, and for each completed RX
+ * descriptor in the ring, it performs the following operations:
  *
- * - Immediately - if the port is stopped, or the user knows that no
- *   callbacks are in flight e.g. if called from the thread doing RX/TX
- *   on that queue.
+ * - Initialize the *rte_mbuf* data structure associated with the
+ *   RX descriptor according to the information provided by the NIC into
+ *   that RX descriptor.
  *
- * - After a short delay - where the delay is sufficient to allow any
- *   in-flight callbacks to complete.
+ * - Store the *rte_mbuf* data structure into the next entry of the
+ *   *rx_pkts* array.
  *
- * @param port_id
- *   The port identifier of the Ethernet device.
- * @param queue_id
- *   The queue on the Ethernet device from which the callback is to be removed.
- * @param user_cb
- *   User supplied callback created via rte_eth_add_tx_callback().
+ * - Replenish the RX descriptor with a new *rte_mbuf* buffer
+ *   allocated from the memory pool associated with the receive queue at
+ *   initialization time.
  *
- * @return
- *   - 0: Success. Callback was removed.
- *   - -ENOTSUP: Callback support is not available.
- *   - -EINVAL:  The port_id or the queue_id is out of range, or the callback
- *               is NULL or not found for the port/queue.
- */
-int rte_eth_remove_tx_callback(uint16_t port_id, uint16_t queue_id,
-		struct rte_eth_rxtx_callback *user_cb);
-
-/**
- * Retrieve information about given port's RX queue.
+ * When retrieving an input packet that was scattered by the controller
+ * into multiple receive descriptors, the rte_eth_rx_burst() function
+ * appends the associated *rte_mbuf* buffers to the first buffer of the
+ * packet.
+ *
+ * The rte_eth_rx_burst() function returns the number of packets
+ * actually retrieved, which is the number of *rte_mbuf* data structures
+ * effectively supplied into the *rx_pkts* array.
+ * A return value equal to *nb_pkts* indicates that the RX queue contained
+ * at least *rx_pkts* packets, and this is likely to signify that other
+ * received packets remain in the input queue. Applications implementing
+ * a "retrieve as much received packets as possible" policy can check this
+ * specific case and keep invoking the rte_eth_rx_burst() function until
+ * a value less than *nb_pkts* is returned.
+ *
+ * This receive method has the following advantages:
+ *
+ * - It allows a run-to-completion network stack engine to retrieve and
+ *   to immediately process received packets in a fast burst-oriented
+ *   approach, avoiding the overhead of unnecessary intermediate packet
+ *   queue/dequeue operations.
+ *
+ * - Conversely, it also allows an asynchronous-oriented processing
+ *   method to retrieve bursts of received packets and to immediately
+ *   queue them for further parallel processing by another logical core,
+ *   for instance. However, instead of having received packets being
+ *   individually queued by the driver, this approach allows the caller
+ *   of the rte_eth_rx_burst() function to queue a burst of retrieved
+ *   packets at a time and therefore dramatically reduce the cost of
+ *   enqueue/dequeue operations per packet.
+ *
+ * - It allows the rte_eth_rx_burst() function of the driver to take
+ *   advantage of burst-oriented hardware features (CPU cache,
+ *   prefetch instructions, and so on) to minimize the number of CPU
+ *   cycles per packet.
+ *
+ * To summarize, the proposed receive API enables many
+ * burst-oriented optimizations in both synchronous and asynchronous
+ * packet processing environments with no overhead in both cases.
+ *
+ * The rte_eth_rx_burst() function does not provide any error
+ * notification to avoid the corresponding overhead. As a hint, the
+ * upper-level application might check the status of the device link once
+ * being systematically returned a 0 value for a given number of tries.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
  * @param queue_id
- *   The RX queue on the Ethernet device for which information
- *   will be retrieved.
- * @param qinfo
- *   A pointer to a structure of type *rte_eth_rxq_info_info* to be filled with
- *   the information of the Ethernet device.
- *
+ *   The index of the receive queue from which to retrieve input packets.
+ *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
+ *   to rte_eth_dev_configure().
+ * @param rx_pkts
+ *   The address of an array of pointers to *rte_mbuf* structures that
+ *   must be large enough to store *nb_pkts* pointers in it.
+ * @param nb_pkts
+ *   The maximum number of packets to retrieve.
  * @return
- *   - 0: Success
- *   - -ENOTSUP: routine is not supported by the device PMD.
- *   - -EINVAL:  The port_id or the queue_id is out of range.
+ *   The number of packets actually retrieved, which is the number
+ *   of pointers to *rte_mbuf* structures effectively supplied to the
+ *   *rx_pkts* array.
  */
-int rte_eth_rx_queue_info_get(uint16_t port_id, uint16_t queue_id,
-	struct rte_eth_rxq_info *qinfo);
+static inline uint16_t
+rte_eth_rx_burst(uint16_t port_id, uint16_t queue_id,
+		 struct rte_mbuf **rx_pkts, const uint16_t nb_pkts)
+{
+	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
+
+#ifdef RTE_LIBRTE_ETHDEV_DEBUG
+	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, 0);
+	RTE_FUNC_PTR_OR_ERR_RET(*dev->rx_pkt_burst, 0);
+
+	if (queue_id >= dev->data->nb_rx_queues) {
+		RTE_PMD_DEBUG_TRACE("Invalid RX queue_id=%d\n", queue_id);
+		return 0;
+	}
+#endif
+	int16_t nb_rx = (*dev->rx_pkt_burst)(dev->data->rx_queues[queue_id],
+			rx_pkts, nb_pkts);
+
+#ifdef RTE_ETHDEV_RXTX_CALLBACKS
+	struct rte_eth_rxtx_callback *cb = dev->post_rx_burst_cbs[queue_id];
+
+	if (unlikely(cb != NULL)) {
+		do {
+			nb_rx = cb->fn.rx(port_id, queue_id, rx_pkts, nb_rx,
+						nb_pkts, cb->param);
+			cb = cb->next;
+		} while (cb != NULL);
+	}
+#endif
+
+	return nb_rx;
+}
 
 /**
- * Retrieve information about given port's TX queue.
+ * Get the number of used descriptors of a rx queue
  *
  * @param port_id
- *   The port identifier of the Ethernet device.
+ *  The port identifier of the Ethernet device.
  * @param queue_id
- *   The TX queue on the Ethernet device for which information
- *   will be retrieved.
- * @param qinfo
- *   A pointer to a structure of type *rte_eth_txq_info_info* to be filled with
- *   the information of the Ethernet device.
- *
+ *  The queue id on the specific port.
  * @return
- *   - 0: Success
- *   - -ENOTSUP: routine is not supported by the device PMD.
- *   - -EINVAL:  The port_id or the queue_id is out of range.
+ *  The number of used descriptors in the specific queue, or:
+ *     (-EINVAL) if *port_id* or *queue_id* is invalid
+ *     (-ENOTSUP) if the device does not support this function
  */
-int rte_eth_tx_queue_info_get(uint16_t port_id, uint16_t queue_id,
-	struct rte_eth_txq_info *qinfo);
+static inline int
+rte_eth_rx_queue_count(uint16_t port_id, uint16_t queue_id)
+{
+	struct rte_eth_dev *dev;
 
-/**
- * Retrieve device registers and register attributes (number of registers and
- * register size)
- *
- * @param port_id
- *   The port identifier of the Ethernet device.
- * @param info
- *   Pointer to rte_dev_reg_info structure to fill in. If info->data is
- *   NULL the function fills in the width and length fields. If non-NULL
- *   the registers are put into the buffer pointed at by the data field.
- * @return
- *   - (0) if successful.
- *   - (-ENOTSUP) if hardware doesn't support.
- *   - (-ENODEV) if *port_id* invalid.
- *   - others depends on the specific operations implementation.
- */
-int rte_eth_dev_get_reg_info(uint16_t port_id, struct rte_dev_reg_info *info);
+	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -EINVAL);
+	dev = &rte_eth_devices[port_id];
+	RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_count, -ENOTSUP);
+	if (queue_id >= dev->data->nb_rx_queues)
+		return -EINVAL;
 
-/**
- * Retrieve size of device EEPROM
- *
- * @param port_id
- *   The port identifier of the Ethernet device.
- * @return
- *   - (>=0) EEPROM size if successful.
- *   - (-ENOTSUP) if hardware doesn't support.
- *   - (-ENODEV) if *port_id* invalid.
- *   - others depends on the specific operations implementation.
- */
-int rte_eth_dev_get_eeprom_length(uint16_t port_id);
+	return (*dev->dev_ops->rx_queue_count)(dev, queue_id);
+}
 
 /**
- * Retrieve EEPROM and EEPROM attribute
+ * Check if the DD bit of the specific RX descriptor in the queue has been set
  *
  * @param port_id
- *   The port identifier of the Ethernet device.
- * @param info
- *   The template includes buffer for return EEPROM data and
- *   EEPROM attributes to be filled.
+ *  The port identifier of the Ethernet device.
+ * @param queue_id
+ *  The queue id on the specific port.
+ * @param offset
+ *  The offset of the descriptor ID from tail.
  * @return
- *   - (0) if successful.
- *   - (-ENOTSUP) if hardware doesn't support.
- *   - (-ENODEV) if *port_id* invalid.
- *   - others depends on the specific operations implementation.
+ *  - (1) if the specific DD bit is set.
+ *  - (0) if the specific DD bit is not set.
+ *  - (-ENODEV) if *port_id* invalid.
+ *  - (-ENOTSUP) if the device does not support this function
  */
-int rte_eth_dev_get_eeprom(uint16_t port_id, struct rte_dev_eeprom_info *info);
+static inline int
+rte_eth_rx_descriptor_done(uint16_t port_id, uint16_t queue_id, uint16_t offset)
+{
+	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
+	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
+	RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_descriptor_done, -ENOTSUP);
+	return (*dev->dev_ops->rx_descriptor_done)( \
+		dev->data->rx_queues[queue_id], offset);
+}
 
-/**
- * Program EEPROM with provided data
- *
- * @param port_id
- *   The port identifier of the Ethernet device.
- * @param info
- *   The template includes EEPROM data for programming and
- *   EEPROM attributes to be filled
- * @return
- *   - (0) if successful.
- *   - (-ENOTSUP) if hardware doesn't support.
- *   - (-ENODEV) if *port_id* invalid.
- *   - others depends on the specific operations implementation.
- */
-int rte_eth_dev_set_eeprom(uint16_t port_id, struct rte_dev_eeprom_info *info);
+#define RTE_ETH_RX_DESC_AVAIL    0 /**< Desc available for hw. */
+#define RTE_ETH_RX_DESC_DONE     1 /**< Desc done, filled by hw. */
+#define RTE_ETH_RX_DESC_UNAVAIL  2 /**< Desc used by driver or hw. */
 
 /**
- * Set the list of multicast addresses to filter on an Ethernet device.
+ * Check the status of a Rx descriptor in the queue
  *
- * @param port_id
- *   The port identifier of the Ethernet device.
- * @param mc_addr_set
- *   The array of multicast addresses to set. Equal to NULL when the function
- *   is invoked to flush the set of filtered addresses.
- * @param nb_mc_addr
- *   The number of multicast addresses in the *mc_addr_set* array. Equal to 0
- *   when the function is invoked to flush the set of filtered addresses.
- * @return
- *   - (0) if successful.
- *   - (-ENODEV) if *port_id* invalid.
- *   - (-ENOTSUP) if PMD of *port_id* doesn't support multicast filtering.
- *   - (-ENOSPC) if *port_id* has not enough multicast filtering resources.
- */
-int rte_eth_dev_set_mc_addr_list(uint16_t port_id,
-				 struct ether_addr *mc_addr_set,
-				 uint32_t nb_mc_addr);
-
-/**
- * Enable IEEE1588/802.1AS timestamping for an Ethernet device.
+ * It should be called in a similar context than the Rx function:
+ * - on a dataplane core
+ * - not concurrently on the same queue
  *
- * @param port_id
- *   The port identifier of the Ethernet device.
+ * Since it's a dataplane function, no check is performed on port_id and
+ * queue_id. The caller must therefore ensure that the port is enabled
+ * and the queue is configured and running.
  *
- * @return
- *   - 0: Success.
- *   - -ENODEV: The port ID is invalid.
- *   - -ENOTSUP: The function is not supported by the Ethernet driver.
- */
-int rte_eth_timesync_enable(uint16_t port_id);
-
-/**
- * Disable IEEE1588/802.1AS timestamping for an Ethernet device.
+ * Note: accessing to a random descriptor in the ring may trigger cache
+ * misses and have a performance impact.
  *
  * @param port_id
- *   The port identifier of the Ethernet device.
+ *  A valid port identifier of the Ethernet device which.
+ * @param queue_id
+ *  A valid Rx queue identifier on this port.
+ * @param offset
+ *  The offset of the descriptor starting from tail (0 is the next
+ *  packet to be received by the driver).
  *
  * @return
- *   - 0: Success.
- *   - -ENODEV: The port ID is invalid.
- *   - -ENOTSUP: The function is not supported by the Ethernet driver.
+ *  - (RTE_ETH_RX_DESC_AVAIL): Descriptor is available for the hardware to
+ *    receive a packet.
+ *  - (RTE_ETH_RX_DESC_DONE): Descriptor is done, it is filled by hw, but
+ *    not yet processed by the driver (i.e. in the receive queue).
+ *  - (RTE_ETH_RX_DESC_UNAVAIL): Descriptor is unavailable, either hold by
+ *    the driver and not yet returned to hw, or reserved by the hw.
+ *  - (-EINVAL) bad descriptor offset.
+ *  - (-ENOTSUP) if the device does not support this function.
+ *  - (-ENODEV) bad port or queue (only if compiled with debug).
  */
-int rte_eth_timesync_disable(uint16_t port_id);
+static inline int
+rte_eth_rx_descriptor_status(uint16_t port_id, uint16_t queue_id,
+	uint16_t offset)
+{
+	struct rte_eth_dev *dev;
+	void *rxq;
 
-/**
- * Read an IEEE1588/802.1AS RX timestamp from an Ethernet device.
- *
- * @param port_id
- *   The port identifier of the Ethernet device.
- * @param timestamp
- *   Pointer to the timestamp struct.
- * @param flags
- *   Device specific flags. Used to pass the RX timesync register index to
- *   i40e. Unused in igb/ixgbe, pass 0 instead.
- *
- * @return
- *   - 0: Success.
- *   - -EINVAL: No timestamp is available.
- *   - -ENODEV: The port ID is invalid.
- *   - -ENOTSUP: The function is not supported by the Ethernet driver.
- */
-int rte_eth_timesync_read_rx_timestamp(uint16_t port_id,
-		struct timespec *timestamp, uint32_t flags);
+#ifdef RTE_LIBRTE_ETHDEV_DEBUG
+	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
+#endif
+	dev = &rte_eth_devices[port_id];
+#ifdef RTE_LIBRTE_ETHDEV_DEBUG
+	if (queue_id >= dev->data->nb_rx_queues)
+		return -ENODEV;
+#endif
+	RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_descriptor_status, -ENOTSUP);
+	rxq = dev->data->rx_queues[queue_id];
 
-/**
- * Read an IEEE1588/802.1AS TX timestamp from an Ethernet device.
- *
- * @param port_id
- *   The port identifier of the Ethernet device.
- * @param timestamp
- *   Pointer to the timestamp struct.
- *
- * @return
- *   - 0: Success.
- *   - -EINVAL: No timestamp is available.
- *   - -ENODEV: The port ID is invalid.
- *   - -ENOTSUP: The function is not supported by the Ethernet driver.
- */
-int rte_eth_timesync_read_tx_timestamp(uint16_t port_id,
-		struct timespec *timestamp);
+	return (*dev->dev_ops->rx_descriptor_status)(rxq, offset);
+}
+
+#define RTE_ETH_TX_DESC_FULL    0 /**< Desc filled for hw, waiting xmit. */
+#define RTE_ETH_TX_DESC_DONE    1 /**< Desc done, packet is transmitted. */
+#define RTE_ETH_TX_DESC_UNAVAIL 2 /**< Desc used by driver or hw. */
 
 /**
- * Adjust the timesync clock on an Ethernet device.
- *
- * This is usually used in conjunction with other Ethdev timesync functions to
- * synchronize the device time using the IEEE1588/802.1AS protocol.
+ * Check the status of a Tx descriptor in the queue.
  *
- * @param port_id
- *   The port identifier of the Ethernet device.
- * @param delta
- *   The adjustment in nanoseconds.
+ * It should be called in a similar context than the Tx function:
+ * - on a dataplane core
+ * - not concurrently on the same queue
  *
- * @return
- *   - 0: Success.
- *   - -ENODEV: The port ID is invalid.
- *   - -ENOTSUP: The function is not supported by the Ethernet driver.
- */
-int rte_eth_timesync_adjust_time(uint16_t port_id, int64_t delta);
-
-/**
- * Read the time from the timesync clock on an Ethernet device.
+ * Since it's a dataplane function, no check is performed on port_id and
+ * queue_id. The caller must therefore ensure that the port is enabled
+ * and the queue is configured and running.
  *
- * This is usually used in conjunction with other Ethdev timesync functions to
- * synchronize the device time using the IEEE1588/802.1AS protocol.
+ * Note: accessing to a random descriptor in the ring may trigger cache
+ * misses and have a performance impact.
  *
  * @param port_id
- *   The port identifier of the Ethernet device.
- * @param time
- *   Pointer to the timespec struct that holds the time.
+ *  A valid port identifier of the Ethernet device which.
+ * @param queue_id
+ *  A valid Tx queue identifier on this port.
+ * @param offset
+ *  The offset of the descriptor starting from tail (0 is the place where
+ *  the next packet will be send).
  *
  * @return
- *   - 0: Success.
+ *  - (RTE_ETH_TX_DESC_FULL) Descriptor is being processed by the hw, i.e.
+ *    in the transmit queue.
+ *  - (RTE_ETH_TX_DESC_DONE) Hardware is done with this descriptor, it can
+ *    be reused by the driver.
+ *  - (RTE_ETH_TX_DESC_UNAVAIL): Descriptor is unavailable, reserved by the
+ *    driver or the hardware.
+ *  - (-EINVAL) bad descriptor offset.
+ *  - (-ENOTSUP) if the device does not support this function.
+ *  - (-ENODEV) bad port or queue (only if compiled with debug).
  */
-int rte_eth_timesync_read_time(uint16_t port_id, struct timespec *time);
+static inline int rte_eth_tx_descriptor_status(uint16_t port_id,
+	uint16_t queue_id, uint16_t offset)
+{
+	struct rte_eth_dev *dev;
+	void *txq;
+
+#ifdef RTE_LIBRTE_ETHDEV_DEBUG
+	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
+#endif
+	dev = &rte_eth_devices[port_id];
+#ifdef RTE_LIBRTE_ETHDEV_DEBUG
+	if (queue_id >= dev->data->nb_tx_queues)
+		return -ENODEV;
+#endif
+	RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->tx_descriptor_status, -ENOTSUP);
+	txq = dev->data->tx_queues[queue_id];
+
+	return (*dev->dev_ops->tx_descriptor_status)(txq, offset);
+}
 
 /**
- * Set the time of the timesync clock on an Ethernet device.
+ * Send a burst of output packets on a transmit queue of an Ethernet device.
  *
- * This is usually used in conjunction with other Ethdev timesync functions to
- * synchronize the device time using the IEEE1588/802.1AS protocol.
+ * The rte_eth_tx_burst() function is invoked to transmit output packets
+ * on the output queue *queue_id* of the Ethernet device designated by its
+ * *port_id*.
+ * The *nb_pkts* parameter is the number of packets to send which are
+ * supplied in the *tx_pkts* array of *rte_mbuf* structures, each of them
+ * allocated from a pool created with rte_pktmbuf_pool_create().
+ * The rte_eth_tx_burst() function loops, sending *nb_pkts* packets,
+ * up to the number of transmit descriptors available in the TX ring of the
+ * transmit queue.
+ * For each packet to send, the rte_eth_tx_burst() function performs
+ * the following operations:
+ *
+ * - Pick up the next available descriptor in the transmit ring.
+ *
+ * - Free the network buffer previously sent with that descriptor, if any.
+ *
+ * - Initialize the transmit descriptor with the information provided
+ *   in the *rte_mbuf data structure.
+ *
+ * In the case of a segmented packet composed of a list of *rte_mbuf* buffers,
+ * the rte_eth_tx_burst() function uses several transmit descriptors
+ * of the ring.
+ *
+ * The rte_eth_tx_burst() function returns the number of packets it
+ * actually sent. A return value equal to *nb_pkts* means that all packets
+ * have been sent, and this is likely to signify that other output packets
+ * could be immediately transmitted again. Applications that implement a
+ * "send as many packets to transmit as possible" policy can check this
+ * specific case and keep invoking the rte_eth_tx_burst() function until
+ * a value less than *nb_pkts* is returned.
+ *
+ * It is the responsibility of the rte_eth_tx_burst() function to
+ * transparently free the memory buffers of packets previously sent.
+ * This feature is driven by the *tx_free_thresh* value supplied to the
+ * rte_eth_dev_configure() function at device configuration time.
+ * When the number of free TX descriptors drops below this threshold, the
+ * rte_eth_tx_burst() function must [attempt to] free the *rte_mbuf*  buffers
+ * of those packets whose transmission was effectively completed.
+ *
+ * If the PMD is DEV_TX_OFFLOAD_MT_LOCKFREE capable, multiple threads can
+ * invoke this function concurrently on the same tx queue without SW lock.
+ * @see rte_eth_dev_info_get, struct rte_eth_txconf::txq_flags
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param time
- *   Pointer to the timespec struct that holds the time.
- *
+ * @param queue_id
+ *   The index of the transmit queue through which output packets must be
+ *   sent.
+ *   The value must be in the range [0, nb_tx_queue - 1] previously supplied
+ *   to rte_eth_dev_configure().
+ * @param tx_pkts
+ *   The address of an array of *nb_pkts* pointers to *rte_mbuf* structures
+ *   which contain the output packets.
+ * @param nb_pkts
+ *   The maximum number of packets to transmit.
  * @return
- *   - 0: Success.
- *   - -EINVAL: No timestamp is available.
- *   - -ENODEV: The port ID is invalid.
- *   - -ENOTSUP: The function is not supported by the Ethernet driver.
+ *   The number of output packets actually stored in transmit descriptors of
+ *   the transmit ring. The return value can be less than the value of the
+ *   *tx_pkts* parameter when the transmit ring is full or has been filled up.
  */
-int rte_eth_timesync_write_time(uint16_t port_id, const struct timespec *time);
+static inline uint16_t
+rte_eth_tx_burst(uint16_t port_id, uint16_t queue_id,
+		 struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
+{
+	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
+
+#ifdef RTE_LIBRTE_ETHDEV_DEBUG
+	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, 0);
+	RTE_FUNC_PTR_OR_ERR_RET(*dev->tx_pkt_burst, 0);
+
+	if (queue_id >= dev->data->nb_tx_queues) {
+		RTE_PMD_DEBUG_TRACE("Invalid TX queue_id=%d\n", queue_id);
+		return 0;
+	}
+#endif
+
+#ifdef RTE_ETHDEV_RXTX_CALLBACKS
+	struct rte_eth_rxtx_callback *cb = dev->pre_tx_burst_cbs[queue_id];
+
+	if (unlikely(cb != NULL)) {
+		do {
+			nb_pkts = cb->fn.tx(port_id, queue_id, tx_pkts, nb_pkts,
+					cb->param);
+			cb = cb->next;
+		} while (cb != NULL);
+	}
+#endif
+
+	return (*dev->tx_pkt_burst)(dev->data->tx_queues[queue_id], tx_pkts, nb_pkts);
+}
 
 /**
- * Config l2 tunnel ether type of an Ethernet device for filtering specific
- * tunnel packets by ether type.
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Process a burst of output packets on a transmit queue of an Ethernet device.
+ *
+ * The rte_eth_tx_prepare() function is invoked to prepare output packets to be
+ * transmitted on the output queue *queue_id* of the Ethernet device designated
+ * by its *port_id*.
+ * The *nb_pkts* parameter is the number of packets to be prepared which are
+ * supplied in the *tx_pkts* array of *rte_mbuf* structures, each of them
+ * allocated from a pool created with rte_pktmbuf_pool_create().
+ * For each packet to send, the rte_eth_tx_prepare() function performs
+ * the following operations:
+ *
+ * - Check if packet meets devices requirements for tx offloads.
+ *
+ * - Check limitations about number of segments.
+ *
+ * - Check additional requirements when debug is enabled.
+ *
+ * - Update and/or reset required checksums when tx offload is set for packet.
+ *
+ * Since this function can modify packet data, provided mbufs must be safely
+ * writable (e.g. modified data cannot be in shared segment).
+ *
+ * The rte_eth_tx_prepare() function returns the number of packets ready to be
+ * sent. A return value equal to *nb_pkts* means that all packets are valid and
+ * ready to be sent, otherwise stops processing on the first invalid packet and
+ * leaves the rest packets untouched.
+ *
+ * When this functionality is not implemented in the driver, all packets are
+ * are returned untouched.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param l2_tunnel
- *   l2 tunnel configuration.
- *
+ *   The value must be a valid port id.
+ * @param queue_id
+ *   The index of the transmit queue through which output packets must be
+ *   sent.
+ *   The value must be in the range [0, nb_tx_queue - 1] previously supplied
+ *   to rte_eth_dev_configure().
+ * @param tx_pkts
+ *   The address of an array of *nb_pkts* pointers to *rte_mbuf* structures
+ *   which contain the output packets.
+ * @param nb_pkts
+ *   The maximum number of packets to process.
  * @return
- *   - (0) if successful.
- *   - (-ENODEV) if port identifier is invalid.
- *   - (-ENOTSUP) if hardware doesn't support tunnel type.
+ *   The number of packets correct and ready to be sent. The return value can be
+ *   less than the value of the *tx_pkts* parameter when some packet doesn't
+ *   meet devices requirements with rte_errno set appropriately:
+ *   - -EINVAL: offload flags are not correctly set
+ *   - -ENOTSUP: the offload feature is not supported by the hardware
+ *
  */
-int
-rte_eth_dev_l2_tunnel_eth_type_conf(uint16_t port_id,
-				    struct rte_eth_l2_tunnel_conf *l2_tunnel);
 
-/**
- * Enable/disable l2 tunnel offload functions. Include,
- * 1, The ability of parsing a type of l2 tunnel of an Ethernet device.
- *    Filtering, forwarding and offloading this type of tunnel packets depend on
- *    this ability.
- * 2, Stripping the l2 tunnel tag.
- * 3, Insertion of the l2 tunnel tag.
- * 4, Forwarding the packets based on the l2 tunnel tag.
- *
- * @param port_id
- *   The port identifier of the Ethernet device.
- * @param l2_tunnel
- *   l2 tunnel parameters.
- * @param mask
- *   Indicate the offload function.
- * @param en
- *   Enable or disable this function.
+#ifndef RTE_ETHDEV_TX_PREPARE_NOOP
+
+static inline uint16_t
+rte_eth_tx_prepare(uint16_t port_id, uint16_t queue_id,
+		struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
+{
+	struct rte_eth_dev *dev;
+
+#ifdef RTE_LIBRTE_ETHDEV_DEBUG
+	if (!rte_eth_dev_is_valid_port(port_id)) {
+		RTE_PMD_DEBUG_TRACE("Invalid TX port_id=%d\n", port_id);
+		rte_errno = -EINVAL;
+		return 0;
+	}
+#endif
+
+	dev = &rte_eth_devices[port_id];
+
+#ifdef RTE_LIBRTE_ETHDEV_DEBUG
+	if (queue_id >= dev->data->nb_tx_queues) {
+		RTE_PMD_DEBUG_TRACE("Invalid TX queue_id=%d\n", queue_id);
+		rte_errno = -EINVAL;
+		return 0;
+	}
+#endif
+
+	if (!dev->tx_pkt_prepare)
+		return nb_pkts;
+
+	return (*dev->tx_pkt_prepare)(dev->data->tx_queues[queue_id],
+			tx_pkts, nb_pkts);
+}
+
+#else
+
+/*
+ * Native NOOP operation for compilation targets which doesn't require any
+ * preparations steps, and functional NOOP may introduce unnecessary performance
+ * drop.
  *
- * @return
- *   - (0) if successful.
- *   - (-ENODEV) if port identifier is invalid.
- *   - (-ENOTSUP) if hardware doesn't support tunnel type.
+ * Generally this is not a good idea to turn it on globally and didn't should
+ * be used if behavior of tx_preparation can change.
  */
-int
-rte_eth_dev_l2_tunnel_offload_set(uint16_t port_id,
-				  struct rte_eth_l2_tunnel_conf *l2_tunnel,
-				  uint32_t mask,
-				  uint8_t en);
 
-/**
-* Get the port id from pci address or device name
-* Ex: 0000:2:00.0 or vdev name net_pcap0
-*
-* @param name
-*  pci address or name of the device
-* @param port_id
-*   pointer to port identifier of the device
-* @return
-*   - (0) if successful and port_id is filled.
-*   - (-ENODEV or -EINVAL) on failure.
-*/
-int
-rte_eth_dev_get_port_by_name(const char *name, uint16_t *port_id);
+static inline uint16_t
+rte_eth_tx_prepare(__rte_unused uint16_t port_id,
+		__rte_unused uint16_t queue_id,
+		__rte_unused struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
+{
+	return nb_pkts;
+}
 
-/**
-* Get the device name from port id
-*
-* @param port_id
-*   pointer to port identifier of the device
-* @param name
-*  pci address or name of the device
-* @return
-*   - (0) if successful.
-*   - (-EINVAL) on failure.
-*/
-int
-rte_eth_dev_get_name_by_port(uint16_t port_id, char *name);
+#endif
 
 /**
- * Check that numbers of Rx and Tx descriptors satisfy descriptors limits from
- * the ethernet device information, otherwise adjust them to boundaries.
+ * Send any packets queued up for transmission on a port and HW queue
+ *
+ * This causes an explicit flush of packets previously buffered via the
+ * rte_eth_tx_buffer() function. It returns the number of packets successfully
+ * sent to the NIC, and calls the error callback for any unsent packets. Unless
+ * explicitly set up otherwise, the default callback simply frees the unsent
+ * packets back to the owning mempool.
  *
  * @param port_id
  *   The port identifier of the Ethernet device.
- * @param nb_rx_desc
- *   A pointer to a uint16_t where the number of receive
- *   descriptors stored.
- * @param nb_tx_desc
- *   A pointer to a uint16_t where the number of transmit
- *   descriptors stored.
+ * @param queue_id
+ *   The index of the transmit queue through which output packets must be
+ *   sent.
+ *   The value must be in the range [0, nb_tx_queue - 1] previously supplied
+ *   to rte_eth_dev_configure().
+ * @param buffer
+ *   Buffer of packets to be transmit.
  * @return
- *   - (0) if successful.
- *   - (-ENOTSUP, -ENODEV or -EINVAL) on failure.
+ *   The number of packets successfully sent to the Ethernet device. The error
+ *   callback is called for any packets which could not be sent.
  */
-int rte_eth_dev_adjust_nb_rx_tx_desc(uint16_t port_id,
-				     uint16_t *nb_rx_desc,
-				     uint16_t *nb_tx_desc);
+static inline uint16_t
+rte_eth_tx_buffer_flush(uint16_t port_id, uint16_t queue_id,
+		struct rte_eth_dev_tx_buffer *buffer)
+{
+	uint16_t sent;
+	uint16_t to_send = buffer->length;
+
+	if (to_send == 0)
+		return 0;
+
+	sent = rte_eth_tx_burst(port_id, queue_id, buffer->pkts, to_send);
+
+	buffer->length = 0;
 
+	/* All packets sent, or to be dealt with by callback below */
+	if (unlikely(sent != to_send))
+		buffer->error_callback(&buffer->pkts[sent], to_send - sent,
+				buffer->error_userdata);
+
+	return sent;
+}
 
 /**
- * Test if a port supports specific mempool ops.
+ * Buffer a single packet for future transmission on a port and queue
+ *
+ * This function takes a single mbuf/packet and buffers it for later
+ * transmission on the particular port and queue specified. Once the buffer is
+ * full of packets, an attempt will be made to transmit all the buffered
+ * packets. In case of error, where not all packets can be transmitted, a
+ * callback is called with the unsent packets as a parameter. If no callback
+ * is explicitly set up, the unsent packets are just freed back to the owning
+ * mempool. The function returns the number of packets actually sent i.e.
+ * 0 if no buffer flush occurred, otherwise the number of packets successfully
+ * flushed
  *
  * @param port_id
- *   Port identifier of the Ethernet device.
- * @param [in] pool
- *   The name of the pool operations to test.
+ *   The port identifier of the Ethernet device.
+ * @param queue_id
+ *   The index of the transmit queue through which output packets must be
+ *   sent.
+ *   The value must be in the range [0, nb_tx_queue - 1] previously supplied
+ *   to rte_eth_dev_configure().
+ * @param buffer
+ *   Buffer used to collect packets to be sent.
+ * @param tx_pkt
+ *   Pointer to the packet mbuf to be sent.
  * @return
- *   - 0: best mempool ops choice for this port.
- *   - 1: mempool ops are supported for this port.
- *   - -ENOTSUP: mempool ops not supported for this port.
- *   - -ENODEV: Invalid port Identifier.
- *   - -EINVAL: Pool param is null.
+ *   0 = packet has been buffered for later transmission
+ *   N > 0 = packet has been buffered, and the buffer was subsequently flushed,
+ *     causing N packets to be sent, and the error callback to be called for
+ *     the rest.
  */
-int
-rte_eth_dev_pool_ops_supported(uint16_t port_id, const char *pool);
+static __rte_always_inline uint16_t
+rte_eth_tx_buffer(uint16_t port_id, uint16_t queue_id,
+		struct rte_eth_dev_tx_buffer *buffer, struct rte_mbuf *tx_pkt)
+{
+	buffer->pkts[buffer->length++] = tx_pkt;
+	if (buffer->length < buffer->size)
+		return 0;
+
+	return rte_eth_tx_buffer_flush(port_id, queue_id, buffer);
+}
 
 #ifdef __cplusplus
 }
-- 
2.14.3