[PATCH v4 4/5] ethdev: support xstats reset telemetry command

[Chengwen Feng]

The xstats reset is useful for debugging, so add it to the ethdev
telemetry command lists.

Signed-off-by: Chengwen Feng <fengcheng...@huawei.com>
---
 lib/ethdev/rte_ethdev.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
index 9eeae61024..ebcb05b523 100644
--- a/lib/ethdev/rte_ethdev.c
+++ b/lib/ethdev/rte_ethdev.c
@@ -5915,6 +5915,31 @@ eth_dev_handle_port_xstats(const char *cmd __rte_unused,
        return 0;
 }
 
+static int
+eth_dev_handle_port_xstats_reset(const char *cmd __rte_unused,
+               const char *params,
+               struct rte_tel_data *d)
+{
+       int port_id, ret;
+       char *end_param;
+
+       if (params == NULL || strlen(params) == 0 || !isdigit(*params))
+               return -1;
+
+       port_id = strtoul(params, &end_param, 0);
+       if (*end_param != '\0')
+               RTE_ETHDEV_LOG(NOTICE,
+                       "Extra parameters passed to ethdev telemetry command, 
ignoring\n");
+       if (!rte_eth_dev_is_valid_port(port_id))
+               return -1;
+
+       ret = rte_eth_xstats_reset(port_id);
+       if (ret == 0)
+               rte_tel_data_string(d, "success");
+
+       return ret;
+}
+
 #ifndef RTE_EXEC_ENV_WINDOWS
 static int
 eth_dev_handle_port_dump_priv(const char *cmd __rte_unused,
@@ -6328,6 +6353,8 @@ RTE_INIT(ethdev_init_telemetry)
                        "Returns the common stats for a port. Parameters: int 
port_id");
        rte_telemetry_register_cmd("/ethdev/xstats", eth_dev_handle_port_xstats,
                        "Returns the extended stats for a port. Parameters: int 
port_id");
+       rte_telemetry_register_cmd("/ethdev/xstats_reset", 
eth_dev_handle_port_xstats_reset,
+                       "Reset the extended stats for a port. Parameters: int 
port_id");
 #ifndef RTE_EXEC_ENV_WINDOWS
        rte_telemetry_register_cmd("/ethdev/dump_priv", 
eth_dev_handle_port_dump_priv,
                        "Returns dump private information for a port. 
Parameters: int port_id");
-- 
2.17.1