From e00fcb0f278bba79e6cd53493ac413b5ad93c634 Mon Sep 17 00:00:00 2001 From: Kevin Laatz Date: Wed, 13 Oct 2021 16:17:35 +0100 Subject: [PATCH] test/dma: add fill tests For DMA devices which support the fill operation, run unit tests to verify fill behaviour is correct. Signed-off-by: Kevin Laatz Signed-off-by: Bruce Richardson Reviewed-by: Conor Walsh --- app/test/test_dmadev.c | 49 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) diff --git a/app/test/test_dmadev.c b/app/test/test_dmadev.c index 8e61216f04..27d2e7a5c4 100644 --- a/app/test/test_dmadev.c +++ b/app/test/test_dmadev.c @@ -623,7 +623,51 @@ test_completion_handling(int16_t dev_id, uint16_t vchan) { return test_completion_status(dev_id, vchan, false) /* without fences */ || test_completion_status(dev_id, vchan, true); /* with fences */ +} + +static int +test_enqueue_fill(int16_t dev_id, uint16_t vchan) +{ + const unsigned int lengths[] = {8, 64, 1024, 50, 100, 89}; + struct rte_mbuf *dst; + char *dst_data; + uint64_t pattern = 0xfedcba9876543210; + unsigned int i, j; + + dst = rte_pktmbuf_alloc(pool); + if (dst == NULL) + ERR_RETURN("Failed to allocate mbuf\n"); + dst_data = rte_pktmbuf_mtod(dst, char *); + + for (i = 0; i < RTE_DIM(lengths); i++) { + /* reset dst_data */ + memset(dst_data, 0, rte_pktmbuf_data_len(dst)); + + /* perform the fill operation */ + int id = rte_dma_fill(dev_id, vchan, pattern, + rte_pktmbuf_iova(dst), lengths[i], RTE_DMA_OP_FLAG_SUBMIT); + if (id < 0) + ERR_RETURN("Error with rte_dma_fill\n"); + await_hw(dev_id, vchan); + + if (rte_dma_completed(dev_id, vchan, 1, NULL, NULL) != 1) + ERR_RETURN("Error: fill operation failed (length: %u)\n", lengths[i]); + /* check the data from the fill operation is correct */ + for (j = 0; j < lengths[i]; j++) { + char pat_byte = ((char *)&pattern)[j % 8]; + if (dst_data[j] != pat_byte) + ERR_RETURN("Error with fill operation (lengths = %u): got (%x), not (%x)\n", + lengths[i], dst_data[j], pat_byte); + } + /* check that the data after the fill operation was not written to */ + for (; j < rte_pktmbuf_data_len(dst); j++) + if (dst_data[j] != 0) + ERR_RETURN("Error, fill operation wrote too far (lengths = %u): got (%x), not (%x)\n", + lengths[i], dst_data[j], 0); + } + rte_pktmbuf_free(dst); + return 0; } static int @@ -696,6 +740,11 @@ test_dmadev_instance(int16_t dev_id) dev_id, vchan, !CHECK_ERRS) < 0) goto err; + if ((info.dev_capa & RTE_DMA_CAPA_OPS_FILL) == 0) + printf("DMA Dev %u: No device fill support, skipping fill tests\n", dev_id); + else if (runtest("fill", test_enqueue_fill, 1, dev_id, vchan, CHECK_ERRS) < 0) + goto err; + rte_mempool_free(pool); rte_dma_stop(dev_id); rte_dma_stats_reset(dev_id, vchan); -- 2.20.1