* malloc: The function ``rte_malloc_set_limit`` was never implemented
is deprecated and will be removed in a future release.
+* eventdev: No longer marked as experimental.
+
+ The eventdev functions are no longer marked as experimental, and have
+ become part of the normal DPDK API and ABI. Any future ABI changes will be
+ announced at least one release before the ABI change is made. There are no
+ ABI breaking changes planned.
+
ABI Changes
-----------
Also, make sure to start the actual text at the margin.
=========================================================
+* eventdev: Event based Rx adapter callback
+
+ The mbuf pointer array in the event eth Rx adapter callback
+ has been replaced with an event array. Using
+ an event array allows the application to change attributes
+ of the events enqueued by the SW adapter.
+
+ The callback can drop packets and populate
+ a callback argument with the number of dropped packets.
+ Add a Rx adapter stats field to keep track of the total
+ number of dropped packets.
+
Shared Library Versions
-----------------------
librte_eal.so.10
librte_efd.so.1
librte_ethdev.so.12
- librte_eventdev.so.6
+ + librte_eventdev.so.7
librte_flow_classify.so.1
librte_gro.so.1
librte_gso.so.1
* For SW based packet transfers, i.e., when the
* RTE_EVENT_ETH_RX_ADAPTER_CAP_INTERNAL_PORT is not set in the adapter's
* capabilities flags for a particular ethernet device, the service function
- * temporarily enqueues mbufs to an event buffer before batch enqueuing these
+ * temporarily enqueues events to an event buffer before batch enqueuing these
* to the event device. If the buffer fills up, the service function stops
* dequeuing packets from the ethernet device. The application may want to
* monitor the buffer fill level and instruct the service function to
- * selectively buffer packets. The application may also use some other
+ * selectively buffer events. The application may also use some other
* criteria to decide which packets should enter the event device even when
- * the event buffer fill level is low. The
- * rte_event_eth_rx_adapter_cb_register() function allows the
- * application to register a callback that selects which packets to enqueue
- * to the event device.
+ * the event buffer fill level is low or may want to enqueue packets to an
+ * internal event port. The rte_event_eth_rx_adapter_cb_register() function
+ * allows the application to register a callback that selects which packets are
+ * enqueued to the event device by the SW adapter. The callback interface is
+ * event based so the callback can also modify the event data if it needs to.
*/
#ifdef __cplusplus
};
/**
- * @warning
- * @b EXPERIMENTAL: this API may change without prior notice
- *
* A structure used to retrieve statistics for an eth rx adapter instance.
*/
struct rte_event_eth_rx_adapter_stats {
/**< Eventdev enqueue count */
uint64_t rx_enq_retry;
/**< Eventdev enqueue retry count */
+ uint64_t rx_dropped;
+ /**< Received packet dropped count */
uint64_t rx_enq_start_ts;
/**< Rx enqueue start timestamp */
uint64_t rx_enq_block_cycles;
};
/**
- * @warning
- * @b EXPERIMENTAL: this API may change without prior notice
*
* Callback function invoked by the SW adapter before it continues
- * to process packets. The callback is passed the size of the enqueue
+ * to process events. The callback is passed the size of the enqueue
* buffer in the SW adapter and the occupancy of the buffer. The
- * callback can use these values to decide which mbufs should be
- * enqueued to the event device. If the return value of the callback
- * is less than nb_mbuf then the SW adapter uses the return value to
- * enqueue enq_mbuf[] to the event device.
+ * callback can use these values to decide which events are
+ * enqueued to the event device by the SW adapter. The callback may
+ * also enqueue events internally using its own event port. The SW
+ * adapter populates the event information based on the Rx queue
+ * configuration in the adapter. The callback can modify the this event
+ * information for the events to be enqueued by the SW adapter.
+ *
+ * The callback return value is the number of events from the
+ * beginning of the event array that are to be enqueued by
+ * the SW adapter. It is the callback's responsibility to arrange
+ * these events at the beginning of the array, if these events are
+ * not contiguous in the original array. The *nb_dropped* parameter is
+ * a pointer to the number of events dropped by the callback, this
+ * number is used by the adapter to indicate the number of dropped packets
+ * as part of its statistics.
*
* @param eth_dev_id
* Port identifier of the Ethernet device.
* @param enqueue_buf_size
* Total enqueue buffer size.
* @param enqueue_buf_count
- * mbuf count in enqueue buffer.
- * @param mbuf
- * mbuf array.
- * @param nb_mbuf
- * mbuf count.
+ * Event count in enqueue buffer.
+ * @param[in, out] ev
+ * Event array.
+ * @param nb_event
+ * Event array length.
* @param cb_arg
* Callback argument.
- * @param[out] enq_mbuf
- * The adapter enqueues enq_mbuf[] if the return value of the
- * callback is less than nb_mbuf
+ * @param[out] nb_dropped
+ * Packets dropped by callback.
* @return
- * Returns the number of mbufs should be enqueued to eventdev
+ * - The number of events to be enqueued by the SW adapter.
*/
typedef uint16_t (*rte_event_eth_rx_adapter_cb_fn)(uint16_t eth_dev_id,
uint16_t queue_id,
uint32_t enqueue_buf_size,
uint32_t enqueue_buf_count,
- struct rte_mbuf **mbuf,
- uint16_t nb_mbuf,
+ struct rte_event *ev,
+ uint16_t nb_event,
void *cb_arg,
- struct rte_mbuf **enq_buf);
+ uint16_t *nb_dropped);
/**
* Create a new ethernet Rx event adapter with the specified identifier.
int rte_event_eth_rx_adapter_stop(uint8_t id);
/**
- * @warning
- * @b EXPERIMENTAL: this API may change without prior notice
- *
* Retrieve statistics for an adapter
*
* @param id
* - 0: Success, retrieved successfully.
* - <0: Error code on failure.
*/
-__rte_experimental
-int
-rte_event_eth_rx_adapter_stats_get(uint8_t id,
- struct rte_event_eth_rx_adapter_stats *stats);
+int rte_event_eth_rx_adapter_stats_get(uint8_t id,
+ struct rte_event_eth_rx_adapter_stats *stats);
/**
* Reset statistics for an adapter.
int rte_event_eth_rx_adapter_service_id_get(uint8_t id, uint32_t *service_id);
/**
- * @warning
- * @b EXPERIMENTAL: this API may change without prior notice
- *
* Register callback to process Rx packets, this is supported for
* SW based packet transfers.
* @see rte_event_eth_rx_cb_fn
* - 0: Success
* - <0: Error code on failure.
*/
-__rte_experimental
-int
-rte_event_eth_rx_adapter_cb_register(uint8_t id,
- uint16_t eth_dev_id,
- rte_event_eth_rx_adapter_cb_fn cb_fn,
- void *cb_arg);
+int rte_event_eth_rx_adapter_cb_register(uint8_t id, uint16_t eth_dev_id,
+ rte_event_eth_rx_adapter_cb_fn cb_fn,
+ void *cb_arg);
#ifdef __cplusplus
}
git.droids-corp.org / dpdk.git / commitdiff