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From: Vidya Sagar Velumuri <vvelumuri@marvell.com>
To: Chengwen Feng <fengchengwen@huawei.com>, Kevin Laatz
<kevin.laatz@intel.com>, Bruce Richardson <bruce.richardson@intel.com>
CC: <gakhil@marvell.com>, <jerinj@marvell.com>, <anoobj@marvell.com>,
<vvelumuri@marvell.com>, <asasidharan@marvell.com>, <dev@dpdk.org>, "Amit
Prakash Shukla" <amitprakashs@marvell.com>
Subject: [PATCH v3 1/2] test/dma: update the sg test to verify wrap around case
Date: Fri, 6 Jun 2025 02:40:30 -0700
Message-ID: <20250606094031.2961842-1-vvelumuri@marvell.com>
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Run the sg test in a loop to verify wrap around case.
Total number commands submitted to be more than the number descriptors
allocated to verify the scenario.
Signed-off-by: Vidya Sagar Velumuri <vvelumuri@marvell.com>
Acked-by: Amit Prakash Shukla <amitprakashs@marvell.com>
diff --git a/app/test/test_dmadev.c b/app/test/test_dmadev.c
index 9cbb9a6552..88c3d02fd6 100644
--- a/app/test/test_dmadev.c
+++ b/app/test/test_dmadev.c
@@ -393,36 +393,28 @@ test_stop_start(int16_t dev_id, uint16_t vchan)
}
static int
-test_enqueue_sg_copies(int16_t dev_id, uint16_t vchan)
+test_enqueue_sg(int16_t dev_id, uint16_t vchan, unsigned int n_sge, unsigned int test_len)
{
- unsigned int src_len, dst_len, n_sge, len, i, j, k;
char orig_src[COPY_LEN], orig_dst[COPY_LEN];
- struct rte_dma_info info = { 0 };
+ unsigned int src_len, dst_len, i, j, k;
enum rte_dma_status_code status;
uint16_t id, n_src, n_dst;
- if (rte_dma_info_get(dev_id, &info) < 0)
- ERR_RETURN("Failed to get dev info");
-
- if (info.max_sges < 2)
- ERR_RETURN("Test needs minimum 2 SG pointers");
-
- n_sge = info.max_sges;
-
for (n_src = 1; n_src <= n_sge; n_src++) {
for (n_dst = 1; n_dst <= n_sge; n_dst++) {
/* Normalize SG buffer lengths */
- len = COPY_LEN;
- len -= (len % (n_src * n_dst));
- dst_len = len / n_dst;
- src_len = len / n_src;
-
struct rte_dma_sge *sg_src = alloca(sizeof(struct rte_dma_sge) * n_sge);
struct rte_dma_sge *sg_dst = alloca(sizeof(struct rte_dma_sge) * n_sge);
struct rte_mbuf **src = alloca(sizeof(struct rte_mbuf *) * n_sge);
struct rte_mbuf **dst = alloca(sizeof(struct rte_mbuf *) * n_sge);
char **src_data = alloca(sizeof(char *) * n_sge);
char **dst_data = alloca(sizeof(char *) * n_sge);
+ unsigned int len = test_len - (test_len % (n_src * n_dst));
+
+ dst_len = len / n_dst;
+ src_len = len / n_src;
+ if (dst_len == 0 || src_len == 0)
+ continue;
for (i = 0 ; i < len; i++)
orig_src[i] = rte_rand() & 0xFF;
@@ -514,6 +506,27 @@ test_enqueue_sg_copies(int16_t dev_id, uint16_t vchan)
return 0;
}
+static int
+test_enqueue_sg_copies(int16_t dev_id, uint16_t vchan)
+{
+ struct rte_dma_info info = { 0 };
+ unsigned int n_sge, len;
+ int loop_count = 0;
+
+ if (rte_dma_info_get(dev_id, &info) < 0)
+ ERR_RETURN("Failed to get dev info");
+
+ n_sge = RTE_MIN(info.max_sges, TEST_SG_MAX);
+ len = COPY_LEN;
+
+ do {
+ test_enqueue_sg(dev_id, vchan, n_sge, len);
+ loop_count++;
+ } while (loop_count * n_sge * n_sge < TEST_RINGSIZE * 3);
+
+ return 0;
+}
+
/* Failure handling test cases - global macros and variables for those tests*/
#define COMP_BURST_SZ 16
#define OPT_FENCE(idx) ((fence && idx == 8) ? RTE_DMA_OP_FLAG_FENCE : 0)
diff --git a/app/test/test_dmadev_api.c b/app/test/test_dmadev_api.c
index fb49fcb56b..c38c4c1f49 100644
--- a/app/test/test_dmadev_api.c
+++ b/app/test/test_dmadev_api.c
@@ -16,7 +16,6 @@ extern int test_dma_api(uint16_t dev_id);
#define TEST_MEMCPY_SIZE 1024
#define TEST_WAIT_US_VAL 50000
-#define TEST_SG_MAX 64
static int16_t test_dev_id;
static int16_t invalid_dev_id;
diff --git a/app/test/test_dmadev_api.h b/app/test/test_dmadev_api.h
index 33fbc5bd41..a03f7acd4f 100644
--- a/app/test/test_dmadev_api.h
+++ b/app/test/test_dmadev_api.h
@@ -2,4 +2,6 @@
* Copyright(c) 2021 HiSilicon Limited
*/
+#define TEST_SG_MAX 64
+
int test_dma_api(uint16_t dev_id);
--
2.25.1