typedef uint32_t (*eth_rx_queue_count_t)(struct rte_eth_dev *dev,
uint16_t rx_queue_id);
-/**< @internal Get number of available descriptors on a receive queue of an Ethernet device. */
+/**< @internal Get number of used descriptors on a receive queue. */
typedef int (*eth_rx_descriptor_done_t)(void *rxq, uint16_t offset);
/**< @internal Check DD bit of specific RX descriptor */
+typedef int (*eth_rx_descriptor_status_t)(void *rxq, uint16_t offset);
+/**< @internal Check the status of a Rx descriptor */
+
+typedef int (*eth_tx_descriptor_status_t)(void *txq, uint16_t offset);
+/**< @internal Check the status of a Tx descriptor */
+
typedef int (*eth_fw_version_get_t)(struct rte_eth_dev *dev,
char *fw_version, size_t fw_size);
/**< @internal Get firmware information of an Ethernet device. */
+typedef int (*eth_tx_done_cleanup_t)(void *txq, uint32_t free_cnt);
+/**< @internal Force mbufs to be from TX ring. */
+
typedef void (*eth_rxq_info_get_t)(struct rte_eth_dev *dev,
uint16_t rx_queue_id, struct rte_eth_rxq_info *qinfo);
eth_queue_stop_t tx_queue_stop; /**< Stop TX for a queue. */
eth_rx_queue_setup_t rx_queue_setup;/**< Set up device RX queue. */
eth_queue_release_t rx_queue_release; /**< Release RX queue. */
- eth_rx_queue_count_t rx_queue_count;/**< Get Rx queue count. */
+ eth_rx_queue_count_t rx_queue_count;
+ /**< Get the number of used RX descriptors. */
eth_rx_descriptor_done_t rx_descriptor_done; /**< Check rxd DD bit. */
+ eth_rx_descriptor_status_t rx_descriptor_status;
+ /**< Check the status of a Rx descriptor. */
+ eth_tx_descriptor_status_t tx_descriptor_status;
+ /**< Check the status of a Tx descriptor. */
eth_rx_enable_intr_t rx_queue_intr_enable; /**< Enable Rx queue interrupt. */
eth_rx_disable_intr_t rx_queue_intr_disable; /**< Disable Rx queue interrupt. */
eth_tx_queue_setup_t tx_queue_setup;/**< Set up device TX queue. */
eth_queue_release_t tx_queue_release; /**< Release TX queue. */
+ eth_tx_done_cleanup_t tx_done_cleanup;/**< Free tx ring mbufs */
eth_dev_led_on_t dev_led_on; /**< Turn on LED. */
eth_dev_led_off_t dev_led_off; /**< Turn off LED. */
}
/**
- * Get the number of used descriptors in a specific queue
+ * Get the number of used descriptors of a rx queue
*
* @param port_id
* The port identifier of the Ethernet device.
* The queue id on the specific port.
* @return
* The number of used descriptors in the specific queue, or:
- * (-EINVAL) if *port_id* is invalid
+ * (-EINVAL) if *port_id* or *queue_id* is invalid
* (-ENOTSUP) if the device does not support this function
*/
static inline int
rte_eth_rx_queue_count(uint8_t port_id, uint16_t queue_id)
{
- struct rte_eth_dev *dev = &rte_eth_devices[port_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);
- return (*dev->dev_ops->rx_queue_count)(dev, queue_id);
+ if (queue_id >= dev->data->nb_rx_queues)
+ return -EINVAL;
+
+ return (*dev->dev_ops->rx_queue_count)(dev, queue_id);
}
/**
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. */
+
+/**
+ * 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.
+ *
+ * Note: accessing to a random descriptor in the ring may trigger cache
+ * misses and have a performance impact.
+ *
+ * @param port_id
+ * 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
+ * - (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).
+ */
+static inline int
+rte_eth_rx_descriptor_status(uint8_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. */
+
+/**
+ * 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.
+ *
+ * Note: accessing to a random descriptor in the ring may trigger cache
+ * misses and have a performance impact.
+ *
+ * @param port_id
+ * 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
+ * - (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).
+ */
+static inline int rte_eth_tx_descriptor_status(uint8_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);
+}
+
/**
* Send a burst of output packets on a transmit queue of an Ethernet device.
*
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 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.
+ * @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.
+ */
+int
+rte_eth_tx_done_cleanup(uint8_t port_id, uint16_t queue_id, uint32_t free_cnt);
+
/**
* The eth device event type for interrupt, and maybe others in the future.
*/
* 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 sepcific UDP port.
+ * can take effect on the packets with the specific UDP port.
*
* @param port_id
* The port identifier of the Ethernet device.
* 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 sepcific UDP port.
+ * effect on the packets with the specific UDP port.
*
* @param port_id
* The port identifier of the Ethernet device.
git.droids-corp.org / dpdk.git / blobdiff