Function test_single_copy

dpdk/app/test/test_dmadev.c:203–269

}

static int
test_single_copy(int16_t dev_id, uint16_t vchan)
{
	uint16_t i;
	uint16_t id;
	enum rte_dma_status_code status;
	struct rte_mbuf *src, *dst;
	char *src_data, *dst_data;

	src = rte_pktmbuf_alloc(pool);
	dst = rte_pktmbuf_alloc(pool);
	src_data = rte_pktmbuf_mtod(src, char *);
	dst_data = rte_pktmbuf_mtod(dst, char *);

	for (i = 0; i < COPY_LEN; i++)
		src_data[i] = rte_rand() & 0xFF;

	id = rte_dma_copy(dev_id, vchan, rte_pktmbuf_iova(src), rte_pktmbuf_iova(dst),
			COPY_LEN, RTE_DMA_OP_FLAG_SUBMIT);
	if (id != id_count)
		ERR_RETURN("Error with rte_dma_copy, got %u, expected %u\n",
				id, id_count);

	/* give time for copy to finish, then check it was done */
	await_hw(dev_id, vchan);

	for (i = 0; i < COPY_LEN; i++)
		if (dst_data[i] != src_data[i])
			ERR_RETURN("Data mismatch at char %u [Got %02x not %02x]\n", i,
					dst_data[i], src_data[i]);

	/* now check completion works */
	id = ~id;
	if (rte_dma_completed(dev_id, vchan, 1, &id, NULL) != 1)
		ERR_RETURN("Error with rte_dma_completed\n");

	if (id != id_count)
		ERR_RETURN("Error:incorrect job id received, %u [expected %u]\n",
				id, id_count);

	/* check for completed and id when no job done */
	id = ~id;
	if (rte_dma_completed(dev_id, vchan, 1, &id, NULL) != 0)
		ERR_RETURN("Error with rte_dma_completed when no job done\n");
	if (id != id_count)
		ERR_RETURN("Error:incorrect job id received when no job done, %u [expected %u]\n",
				id, id_count);

	/* check for completed_status and id when no job done */
	id = ~id;
	if (rte_dma_completed_status(dev_id, vchan, 1, &id, &status) != 0)
		ERR_RETURN("Error with rte_dma_completed_status when no job done\n");
	if (id != id_count)
		ERR_RETURN("Error:incorrect job id received when no job done, %u [expected %u]\n",
				id, id_count);

	rte_pktmbuf_free(src);
	rte_pktmbuf_free(dst);