Add a test case to validate the functionality of drivers' dma
source buffer offload free. As part of dmadev_autotest, test case
will be executed only if the driver supports source buffer offload
free and if the test is exported by env variable DPDK_ADD_DMA_TEST.
Signed-off-by: Amit Prakash Shukla <amitpraka...@marvell.com>
---
app/test/test_dmadev.c | 166 ++++++++++++++++++++++++++++++++++++++++-
1 file changed, 165 insertions(+), 1 deletion(-)
diff --git a/app/test/test_dmadev.c b/app/test/test_dmadev.c
index 6ef875e545..0fdfe983af 100644
--- a/app/test/test_dmadev.c
+++ b/app/test/test_dmadev.c
@@ -18,11 +18,37 @@
#define ERR_RETURN(...) do { print_err(__func__, __LINE__, __VA_ARGS__);
return -1; } while (0)
+#define TEST_RINGSIZE 512
#define COPY_LEN 1024
static struct rte_mempool *pool;
static uint16_t id_count;
+enum {
+ TEST_PARAM_REMOTE_ADDR = 0,
+ TEST_PARAM_MAX,
+};
+
+static const char * const dma_test_param[] = {
+ [TEST_PARAM_REMOTE_ADDR] = "remote_addr",
+};
+
+static uint64_t env_test_param[TEST_PARAM_MAX];
+
+enum {
+ TEST_SRC_BUF_FREE = 0,
+ TEST_MAX,
+};
+
+struct dma_add_test {
+ const char *name;
+ bool enabled;
+};
+
+struct dma_add_test dma_add_test[] = {
+ [TEST_SRC_BUF_FREE] = {.name = "sbuf_free", .enabled = false},
+};
+
static void
__rte_format_printf(3, 4)
print_err(const char *func, int lineno, const char *format, ...)
@@ -797,10 +823,103 @@ test_burst_capacity(int16_t dev_id, uint16_t vchan)
return 0;
}
+static int
+test_sbuf_free(int16_t dev_id, uint16_t vchan)
+{
+#define NR_MBUF 256
+ struct rte_mbuf *src[NR_MBUF], *dst[NR_MBUF];
+ const struct rte_dma_vchan_conf qconf = {
+ .direction = RTE_DMA_DIR_MEM_TO_DEV,
+ .nb_desc = TEST_RINGSIZE,
+ .mem_to_dev_src_buf_pool = pool,
+ .dst_port.port_type = RTE_DMA_PORT_PCIE,
+ .dst_port.pcie.coreid = 0,
+ };
+ uint32_t buf_cnt1, buf_cnt2;
+ struct rte_mempool_ops *ops;
+ static bool dev_init;
+ uint16_t nb_done = 0;
+ bool dma_err = false;
+ int retry = 100;
+ int i, ret = 0;
+
+ if (!dev_init) {
+ /* Stop the device to reconfigure vchan. */
+ if (rte_dma_stop(dev_id) < 0)
+ ERR_RETURN("Error stopping device %u\n", dev_id);
+
+ if (rte_dma_vchan_setup(dev_id, vchan, &qconf) < 0)
+ ERR_RETURN("Error with queue configuration\n");
+
+ if (rte_dma_start(dev_id) != 0)
+ ERR_RETURN("Error with rte_dma_start()\n");
+
+ dev_init = true;
+ }
+
+ if (rte_pktmbuf_alloc_bulk(pool, dst, NR_MBUF) != 0)
+ ERR_RETURN("alloc dst mbufs failed.\n");
+
+ for (i = 0; i < NR_MBUF; i++) {
+ /* Using mbuf structure to hold remote iova address. */
+ rte_mbuf_iova_set(dst[i],
(rte_iova_t)env_test_param[TEST_PARAM_REMOTE_ADDR]);
+ dst[i]->data_off = 0;
+ }
+
+ /* Capture buffer count before allocating source buffer. */
+ ops = rte_mempool_get_ops(pool->ops_index);
+ buf_cnt1 = ops->get_count(pool);
+
+ if (rte_pktmbuf_alloc_bulk(pool, src, NR_MBUF) != 0) {
+ printf("alloc src mbufs failed.\n");
+ ret = -1;
+ goto done;
+ }
+
+ if ((buf_cnt1 - NR_MBUF) != ops->get_count(pool)) {
+ printf("Buffer count check failed.\n");
+ ret = -1;
+ goto done;
+ }
+
+ for (i = 0; i < NR_MBUF; i++) {
+ ret = rte_dma_copy(dev_id, vchan, rte_mbuf_data_iova(src[i]),
+ rte_mbuf_data_iova(dst[i]), COPY_LEN,
+ RTE_DMA_OP_FLAG_FREE_SBUF);
+
+ if (ret < 0) {
+ printf("rte_dma_copy returned error.\n");
+ goto done;
+ }
+ }
+
+ rte_dma_submit(dev_id, vchan);
+ do {
+ nb_done += rte_dma_completed(dev_id, vchan, (NR_MBUF -
nb_done), NULL, &dma_err);
+ if (dma_err)
+ break;
+ /* Sleep for 1 millisecond */
+ rte_delay_us_sleep(1000);
+ } while (retry-- && (nb_done < NR_MBUF));
+
+ buf_cnt2 = ops->get_count(pool);
+ if ((buf_cnt1 != buf_cnt2) || dma_err) {
+ printf("Free source buffer test failed.\n");
+ ret = -1;
+ }
+
+done:
+ rte_pktmbuf_free_bulk(dst, NR_MBUF);
+ /* If the test passes source buffer will be freed in hardware. */
+ if (ret < 0)
+ rte_pktmbuf_free_bulk(&src[nb_done], (NR_MBUF - nb_done));
+
+ return ret;
+}
+
static int
test_dmadev_instance(int16_t dev_id)
{
-#define TEST_RINGSIZE 512
#define CHECK_ERRS true
struct rte_dma_stats stats;
struct rte_dma_info info;
@@ -890,6 +1009,12 @@ test_dmadev_instance(int16_t dev_id)
else if (runtest("fill", test_enqueue_fill, 1, dev_id, vchan,
CHECK_ERRS) < 0)
goto err;
+ if ((info.dev_capa & RTE_DMA_CAPA_MEM_TO_DEV_SOURCE_BUFFER_FREE) &&
+ dma_add_test[TEST_SRC_BUF_FREE].enabled == true) {
+ if (runtest("sbuf_free", test_sbuf_free, 128, dev_id, vchan,
CHECK_ERRS) < 0)
+ goto err;
+ }
+
rte_mempool_free(pool);
if (rte_dma_stop(dev_id) < 0)
@@ -922,11 +1047,50 @@ test_apis(void)
return ret;
}
+static void
+parse_dma_env_var(void)
+{
+ char *dma_env_param_str = getenv("DPDK_ADD_DMA_TEST_PARAM");
+ char *dma_env_test_str = getenv("DPDK_ADD_DMA_TEST");
+ char *params[32] = {0};
+ char *tests[32] = {0};
+ char *var[2] = {0};
+ int n_var = 0;
+ int i, j;
+
+ /* Additional test from commandline. */
+ if (dma_env_test_str && strlen(dma_env_test_str) > 0) {
+ n_var = rte_strsplit(dma_env_test_str,
strlen(dma_env_test_str), tests,
+ RTE_DIM(tests), ',');
+ for (i = 0; i < n_var; i++) {
+ for (j = 0; j < TEST_MAX; j++) {
+ if (!strcmp(tests[i], dma_add_test[j].name))
+ dma_add_test[j].enabled = true;
+ }
+ }
+ }
+
+ /* Commandline variables for test */
+ if (dma_env_param_str && strlen(dma_env_param_str) > 0) {
+ n_var = rte_strsplit(dma_env_param_str,
strlen(dma_env_param_str), params,
+ RTE_DIM(params), ',');
+ for (i = 0; i < n_var; i++) {
+ rte_strsplit(params[i], strlen(params[i]), var,
RTE_DIM(var), '=');
+ for (j = 0; j < TEST_PARAM_MAX; j++) {
+ if (!strcmp(var[0], dma_test_param[j]))
+ env_test_param[j] = strtoul(var[1],
NULL, 16);
+ }
+ }
+ }
+}
+
static int
test_dma(void)
{
int i;
+ parse_dma_env_var();
+
/* basic sanity on dmadev infrastructure */
if (test_apis() < 0)
ERR_RETURN("Error performing API tests\n");
--
2.25.1
