* @param count
* number of elements in the "descs" array
* @return
- * -1 on failure, number of descs processed on success
+ * number of descs processed
*/
- int (*transfer_data)(int vid, uint16_t queue_id,
+ uint32_t (*transfer_data)(int vid, uint16_t queue_id,
struct rte_vhost_async_desc *descs,
struct rte_vhost_async_status *opaque_data,
uint16_t count);
* @param vid
* id of vhost device to check copy completion
* @param queue_id
- * queue id to check copyp completion
+ * queue id to check copy completion
* @param opaque_data
* buffer to receive the opaque data pair from DMA engine
* @param max_packets
* max number of packets could be completed
* @return
- * -1 on failure, number of iov segments completed on success
+ * number of async descs completed
*/
- int (*check_completed_copies)(int vid, uint16_t queue_id,
+ uint32_t (*check_completed_copies)(int vid, uint16_t queue_id,
struct rte_vhost_async_status *opaque_data,
uint16_t max_packets);
};
+/**
+ * inflight async packet information
+ */
+struct async_inflight_info {
+ struct rte_mbuf *mbuf;
+ uint16_t descs; /* num of descs inflight */
+};
+
/**
* dma channel feature bit definition
*/
};
/**
- * register a async channel for vhost
+ * register an async channel for vhost
*
* @param vid
* vhost device id async channel to be attached to
__rte_experimental
int rte_vhost_async_channel_unregister(int vid, uint16_t queue_id);
+/**
+ * This function submits enqueue data to async engine. Successfully
+ * enqueued packets can be transfer completed or being occupied by DMA
+ * engines, when this API returns. Transfer completed packets are returned
+ * in comp_pkts, so users need to guarantee its size is greater than or
+ * equal to the size of pkts; for packets that are successfully enqueued
+ * but not transfer completed, users should poll transfer status by
+ * rte_vhost_poll_enqueue_completed().
+ *
+ * @param vid
+ * id of vhost device to enqueue data
+ * @param queue_id
+ * queue id to enqueue data
+ * @param pkts
+ * array of packets to be enqueued
+ * @param count
+ * packets num to be enqueued
+ * @param comp_pkts
+ * empty array to get transfer completed packets. Users need to
+ * guarantee its size is greater than or equal to that of pkts
+ * @param comp_count
+ * num of packets that are transfer completed, when this API returns.
+ * If no packets are transfer completed, its value is set to 0.
+ * @return
+ * num of packets enqueued, including in-flight and transfer completed
+ */
+__rte_experimental
+uint16_t rte_vhost_submit_enqueue_burst(int vid, uint16_t queue_id,
+ struct rte_mbuf **pkts, uint16_t count,
+ struct rte_mbuf **comp_pkts, uint32_t *comp_count);
+
+/**
+ * This function checks async completion status for a specific vhost
+ * device queue. Packets which finish copying (enqueue) operation
+ * will be returned in an array.
+ *
+ * @param vid
+ * id of vhost device to enqueue data
+ * @param queue_id
+ * queue id to enqueue data
+ * @param pkts
+ * blank array to get return packet pointer
+ * @param count
+ * size of the packet array
+ * @return
+ * num of packets returned
+ */
+__rte_experimental
+uint16_t rte_vhost_poll_enqueue_completed(int vid, uint16_t queue_id,
+ struct rte_mbuf **pkts, uint16_t count);
+
#endif /* _RTE_VHOST_ASYNC_H_ */