Because the names of dmadevs are different, this commit support list
DMA devices, so that user could quickly know how to set the lcore_dma
parameters.
The command: dpdk-test-dma-perf --config ./config.ini --list-dma
The output like:
DMA device: 0000:7b:00.0-ch0
transfer-capa: mem2mem
max-segs: 0 numa-node: 0 min-desc: 32 max-desc: 8192
DMA device: 0000:7b:00.0-ch1
transfer-capa: mem2mem
max-segs: 0 numa-node: 0 min-desc: 32 max-desc: 8192
Signed-off-by: Chengwen Feng <[email protected]>
Acked-by: Vamsi Attunuru <[email protected]>
---
app/test-dma-perf/main.c | 56 ++++++++++++++++++++++++++++++++++++
doc/guides/tools/dmaperf.rst | 7 +++++
2 files changed, 63 insertions(+)
diff --git a/app/test-dma-perf/main.c b/app/test-dma-perf/main.c
index 4501e096be..bce85a79d8 100644
--- a/app/test-dma-perf/main.c
+++ b/app/test-dma-perf/main.c
@@ -43,6 +43,7 @@ static struct global_configure global_cfg;
static char *config_path;
static char *result_path;
+static bool list_dma;
__rte_format_printf(1, 2)
void
@@ -538,6 +539,10 @@ parse_args(int argc, char **argv)
(void *)&result_path, NULL,
RTE_ARGPARSE_VALUE_REQUIRED,
RTE_ARGPARSE_VALUE_TYPE_STR,
},
+ { "--list-dma", NULL, "Optional, list dma devices and
exit",
+ (void *)&list_dma, (void *)true,
+ RTE_ARGPARSE_VALUE_NONE, RTE_ARGPARSE_VALUE_TYPE_BOOL,
+ },
ARGPARSE_ARG_END(),
},
};
@@ -578,6 +583,52 @@ parse_args(int argc, char **argv)
return 0;
}
+static void
+list_dma_dev(void)
+{
+ static const struct {
+ uint64_t capability;
+ const char *name;
+ } capa_names[] = {
+ { RTE_DMA_CAPA_MEM_TO_MEM, "mem2mem" },
+ { RTE_DMA_CAPA_MEM_TO_DEV, "mem2dev" },
+ { RTE_DMA_CAPA_DEV_TO_MEM, "dev2mem" },
+ { RTE_DMA_CAPA_DEV_TO_DEV, "dev2dev" },
+ };
+ struct rte_dma_info info;
+ uint32_t count = 0;
+ int idx = 0;
+ uint32_t i;
+ int ret;
+
+ ret = rte_eal_init(global_cfg.eal_argc, global_cfg.eal_argv);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
+
+ RTE_DMA_FOREACH_DEV(idx) {
+ ret = rte_dma_info_get(idx, &info);
+ if (ret != 0)
+ continue;
+
+ printf("\nDMA device name: %s\n", info.dev_name);
+ printf(" transfer-capa:");
+ for (i = 0; i < RTE_DIM(capa_names); i++) {
+ if (capa_names[i].capability & info.dev_capa)
+ printf(" %s", capa_names[i].name);
+ }
+ printf("\n");
+ printf(" max-segs: %u numa-node: %d min-desc: %u max-desc:
%u\n",
+ info.max_sges, info.numa_node, info.min_desc,
info.max_desc);
+ count++;
+ }
+
+ printf("\n");
+ if (count == 0)
+ printf("There are no dmadev devices!\n\n");
+
+ rte_eal_cleanup();
+}
+
int
main(int argc, char *argv[])
{
@@ -591,6 +642,11 @@ main(int argc, char *argv[])
case_nb = load_configs(config_path);
+ if (list_dma) {
+ list_dma_dev();
+ return 0;
+ }
+
printf("Running cases...\n");
for (i = 0; i < case_nb; i++) {
if (test_cases[i].is_skip) {
diff --git a/doc/guides/tools/dmaperf.rst b/doc/guides/tools/dmaperf.rst
index 47013e6d64..c0e25362d5 100644
--- a/doc/guides/tools/dmaperf.rst
+++ b/doc/guides/tools/dmaperf.rst
@@ -199,6 +199,13 @@ and ``res_dma.csv`` will be the generated result file.
If no result file is specified, the test results are found in a file
with the same name as the configuration file with the addition of
``_result.csv`` at the end.
+Because the names of dmadevs are different, the following command support
+list DMA devices, it could quickly know how to set the lcore_dma parameters.
+
+.. code-block:: console
+
+ dpdk-test-dma-perf --config ./config.ini --list-dma
+
Limitations
-----------
--
2.17.1
