Function rte_dma_submit

dpdk/lib/dmadev/rte_dmadev.h:956–969

* Trigger hardware to begin performing enqueued operations. * * Writes the "doorbell" to the hardware to trigger it * to begin the operations previously enqueued by rte_dma_copy/fill(). * * @param dev_id * The identifier of the device. * @param vchan * The identifier of virtual DMA channel. * * @return * 0 on success. Otherwise negative value is returned. */

 *   0 on success. Otherwise negative value is returned.
 */
static inline int
rte_dma_submit(int16_t dev_id, uint16_t vchan)
{
	struct rte_dma_fp_object *obj = &rte_dma_fp_objs[dev_id];

#ifdef RTE_DMADEV_DEBUG
	if (!rte_dma_is_valid(dev_id))
		return -EINVAL;
	if (*obj->submit == NULL)
		return -ENOTSUP;
#endif

	return (*obj->submit)(obj->dev_private, vchan);
}

/**
 * Return the number of operations that have been successfully completed.