diff mbox series

[v5,6/9] app/test: add more comprehensive dmadev copy tests

Message ID 20210917135429.90562-7-bruce.richardson@intel.com (mailing list archive)
State Superseded
Delegated to: Thomas Monjalon
Headers show
Series add test suite for DMA drivers | expand

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Bruce Richardson Sept. 17, 2021, 1:54 p.m. UTC
Add unit tests for various combinations of use for dmadev, copying
bursts of packets in various formats, e.g.

1. enqueuing two smaller bursts and completing them as one burst
2. enqueuing one burst and gathering completions in smaller bursts
3. using completed_status() function to gather completions rather than
   just completed()

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Reviewed-by: Kevin Laatz <kevin.laatz@intel.com>
Reviewed-by: Conor Walsh <conor.walsh@intel.com>
---
 app/test/test_dmadev.c | 101 ++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 100 insertions(+), 1 deletion(-)

--
2.30.2
diff mbox series

Patch

diff --git a/app/test/test_dmadev.c b/app/test/test_dmadev.c
index 2f22b6e382..3a1373b1ef 100644
--- a/app/test/test_dmadev.c
+++ b/app/test/test_dmadev.c
@@ -83,6 +83,98 @@  await_hw(int dev_id, uint16_t vchan)
 	}
 }

+/* run a series of copy tests just using some different options for enqueues and completions */
+static int
+do_multi_copies(int dev_id, uint16_t vchan,
+		int split_batches,     /* submit 2 x 16 or 1 x 32 burst */
+		int split_completions, /* gather 2 x 16 or 1 x 32 completions */
+		int use_completed_status) /* use completed or completed_status function */
+{
+	struct rte_mbuf *srcs[32], *dsts[32];
+	enum rte_dma_status_code sc[32];
+	unsigned int i, j;
+	bool dma_err = false;
+
+	/* Enqueue burst of copies and hit doorbell */
+	for (i = 0; i < RTE_DIM(srcs); i++) {
+		uint64_t *src_data;
+
+		if (split_batches && i == RTE_DIM(srcs) / 2)
+			rte_dma_submit(dev_id, vchan);
+
+		srcs[i] = rte_pktmbuf_alloc(pool);
+		dsts[i] = rte_pktmbuf_alloc(pool);
+		if (srcs[i] == NULL || dsts[i] == NULL)
+			ERR_RETURN("Error allocating buffers\n");
+
+		src_data = rte_pktmbuf_mtod(srcs[i], uint64_t *);
+		for (j = 0; j < COPY_LEN/sizeof(uint64_t); j++)
+			src_data[j] = rte_rand();
+
+		if (rte_dma_copy(dev_id, vchan, srcs[i]->buf_iova + srcs[i]->data_off,
+				dsts[i]->buf_iova + dsts[i]->data_off, COPY_LEN, 0) != id_count++)
+			ERR_RETURN("Error with rte_dma_copy for buffer %u\n", i);
+	}
+	rte_dma_submit(dev_id, vchan);
+
+	await_hw(dev_id, vchan);
+
+	if (split_completions) {
+		/* gather completions in two halves */
+		uint16_t half_len = RTE_DIM(srcs) / 2;
+		int ret = rte_dma_completed(dev_id, vchan, half_len, NULL, &dma_err);
+		if (ret != half_len || dma_err)
+			ERR_RETURN("Error with rte_dma_completed - first half. ret = %d, expected ret = %u, dma_err = %d\n",
+					ret, half_len, dma_err);
+
+		ret = rte_dma_completed(dev_id, vchan, half_len, NULL, &dma_err);
+		if (ret != half_len || dma_err)
+			ERR_RETURN("Error with rte_dma_completed - second half. ret = %d, expected ret = %u, dma_err = %d\n",
+					ret, half_len, dma_err);
+	} else {
+		/* gather all completions in one go, using either
+		 * completed or completed_status fns
+		 */
+		if (!use_completed_status) {
+			int n = rte_dma_completed(dev_id, vchan, RTE_DIM(srcs), NULL, &dma_err);
+			if (n != RTE_DIM(srcs) || dma_err)
+				ERR_RETURN("Error with rte_dma_completed, %u [expected: %zu], dma_err = %d\n",
+						n, RTE_DIM(srcs), dma_err);
+		} else {
+			int n = rte_dma_completed_status(dev_id, vchan, RTE_DIM(srcs), NULL, sc);
+			if (n != RTE_DIM(srcs))
+				ERR_RETURN("Error with rte_dma_completed_status, %u [expected: %zu]\n",
+						n, RTE_DIM(srcs));
+
+			for (j = 0; j < (uint16_t)n; j++)
+				if (sc[j] != RTE_DMA_STATUS_SUCCESSFUL)
+					ERR_RETURN("Error with rte_dma_completed_status, job %u reports failure [code %u]\n",
+							j, sc[j]);
+		}
+	}
+
+	/* check for empty */
+	int ret = use_completed_status ?
+			rte_dma_completed_status(dev_id, vchan, RTE_DIM(srcs), NULL, sc) :
+			rte_dma_completed(dev_id, vchan, RTE_DIM(srcs), NULL, &dma_err);
+	if (ret != 0)
+		ERR_RETURN("Error with completion check - ops unexpectedly returned\n");
+
+	for (i = 0; i < RTE_DIM(srcs); i++) {
+		char *src_data, *dst_data;
+
+		src_data = rte_pktmbuf_mtod(srcs[i], char *);
+		dst_data = rte_pktmbuf_mtod(dsts[i], char *);
+		for (j = 0; j < COPY_LEN; j++)
+			if (src_data[j] != dst_data[j])
+				ERR_RETURN("Error with copy of packet %u, byte %u\n", i, j);
+
+		rte_pktmbuf_free(srcs[i]);
+		rte_pktmbuf_free(dsts[i]);
+	}
+	return 0;
+}
+
 static int
 test_enqueue_copies(int dev_id, uint16_t vchan)
 {
@@ -177,7 +269,14 @@  test_enqueue_copies(int dev_id, uint16_t vchan)
 		rte_pktmbuf_free(dst);
 	} while (0);

-	return 0;
+	/* test doing multiple copies */
+	return do_multi_copies(dev_id, vchan, 0, 0, 0) /* enqueue and complete 1 batch at a time */
+			/* enqueue 2 batches and then complete both */
+			|| do_multi_copies(dev_id, vchan, 1, 0, 0)
+			/* enqueue 1 batch, then complete in two halves */
+			|| do_multi_copies(dev_id, vchan, 0, 1, 0)
+			/* test using completed_status in place of regular completed API */
+			|| do_multi_copies(dev_id, vchan, 0, 0, 1);
 }

 static int