ethdev: add hairpin queue

[dpdk.git] / lib / librte_ethdev / rte_ethdev_driver.h

diff --git a/lib/librte_ethdev/rte_ethdev_driver.h b/lib/librte_ethdev/rte_ethdev_driver.h
index 3640dff..99d4cd6 100644 (file)
--- a/lib/librte_ethdev/rte_ethdev_driver.h
+++ b/lib/librte_ethdev/rte_ethdev_driver.h
@@ -21,6 +21,41 @@
 extern "C" {
 #endif
 
+/**
+ * RX/TX queue states
+ */
+#define RTE_ETH_QUEUE_STATE_STOPPED 0
+#define RTE_ETH_QUEUE_STATE_STARTED 1
+#define RTE_ETH_QUEUE_STATE_HAIRPIN 2
+
+/**
+ * @internal
+ * Check if the selected Rx queue is hairpin queue.
+ *
+ * @param dev
+ *  Pointer to the selected device.
+ * @param queue_id
+ *  The selected queue.
+ *
+ * @return
+ *   - (1) if the queue is hairpin queue, 0 otherwise.
+ */
+int rte_eth_dev_is_rx_hairpin_queue(struct rte_eth_dev *dev, uint16_t queue_id);
+
+/**
+ * @internal
+ * Check if the selected Tx queue is hairpin queue.
+ *
+ * @param dev
+ *  Pointer to the selected device.
+ * @param queue_id
+ *  The selected queue.
+ *
+ * @return
+ *   - (1) if the queue is hairpin queue, 0 otherwise.
+ */
+int rte_eth_dev_is_tx_hairpin_queue(struct rte_eth_dev *dev, uint16_t queue_id);
+
 /**
  * @internal
  * Returns a ethdev slot specified by the unique identifier name.
@@ -38,7 +73,6 @@ struct rte_eth_dev *rte_eth_dev_allocated(const char *name);
  * to that slot for the driver to use.
  *
  * @param      name    Unique identifier name for each Ethernet device
- * @param      type    Device type of this Ethernet device
  * @return
  *   - Slot in the rte_dev_devices array for a new device;
  */
@@ -59,10 +93,17 @@ struct rte_eth_dev *rte_eth_dev_attach_secondary(const char *name);
 
 /**
  * @internal
- * Release the specified ethdev port.
+ * Notify RTE_ETH_EVENT_DESTROY and release the specified ethdev port.
+ *
+ * The following PMD-managed data fields will be freed:
+ *   - dev_private
+ *   - mac_addrs
+ *   - hash_mac_addrs
+ * If one of these fields should not be freed,
+ * it must be reset to NULL by the PMD, typically in dev_close method.
  *
  * @param eth_dev
- * The *eth_dev* pointer is the address of the *rte_eth_dev* structure.
+ * Device to be detached.
  * @return
  *   - 0 on success, negative on error
  */
@@ -106,6 +147,8 @@ int _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
  * This is the last step of device probing.
  * It must be called after a port is allocated and initialized successfully.
  *
+ * The notification RTE_ETH_EVENT_NEW is sent to other entities
+ * (libraries and applications).
  * The state is set as RTE_ETH_DEV_ATTACHED.
  *
  * @param dev
@@ -217,7 +260,8 @@ rte_eth_linkstatus_get(const struct rte_eth_dev *dev,
  * @return
  *   Negative errno value on error, 0 on success.
  */
-int __rte_experimental
+__rte_experimental
+int
 rte_eth_switch_domain_alloc(uint16_t *domain_id);
 
 /**
@@ -235,7 +279,8 @@ rte_eth_switch_domain_alloc(uint16_t *domain_id);
  * @return
  *   Negative errno value on error, 0 on success.
  */
-int __rte_experimental
+__rte_experimental
+int
 rte_eth_switch_domain_free(uint16_t domain_id);
 
 /** Generic Ethernet device arguments  */
@@ -264,7 +309,8 @@ struct rte_eth_devargs {
  * @return
  *   Negative errno value on error, 0 on success.
  */
-int __rte_experimental
+__rte_experimental
+int
 rte_eth_devargs_parse(const char *devargs, struct rte_eth_devargs *eth_devargs);
 
 
@@ -296,7 +342,8 @@ typedef int (*ethdev_bus_specific_init)(struct rte_eth_dev *ethdev,
  * @return
  *   Negative errno value on error, 0 on success.
  */
-int __rte_experimental
+__rte_experimental
+int
 rte_eth_dev_create(struct rte_device *device, const char *name,
        size_t priv_data_size,
        ethdev_bus_specific_init bus_specific_init, void *bus_init_params,
@@ -309,7 +356,7 @@ typedef int (*ethdev_uninit_t)(struct rte_eth_dev *ethdev);
  * @warning
  * @b EXPERIMENTAL: this API may change without prior notice.
  *
- * PMD helper function for cleaing up the resources of a ethdev port on it's
+ * PMD helper function for cleaning up the resources of a ethdev port on it's
  * destruction.
  *
  * @param ethdev
@@ -320,7 +367,8 @@ typedef int (*ethdev_uninit_t)(struct rte_eth_dev *ethdev);
  * @return
  *   Negative errno value on error, 0 on success.
  */
-int __rte_experimental
+__rte_experimental
+int
 rte_eth_dev_destroy(struct rte_eth_dev *ethdev, ethdev_uninit_t ethdev_uninit);
 
 #ifdef __cplusplus