[PATCH v2 1/2] eventdev: add device info telemetry command

[Bruce Richardson]

The eventdev telemetry support did not have a command for showing basic
info about each eventdev device, such as the name and driver in use. Add
this callback to allow telemetry user to determine which eventdev device
is which.

Signed-off-by: Bruce Richardson <bruce.richardson at intel.com>
---
 lib/eventdev/rte_eventdev.c | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/lib/eventdev/rte_eventdev.c b/lib/eventdev/rte_eventdev.c
index ca295c87c4..23631ff3f6 100644
--- a/lib/eventdev/rte_eventdev.c
+++ b/lib/eventdev/rte_eventdev.c
@@ -1725,6 +1725,41 @@ handle_dev_list(const char *cmd __rte_unused,
 	return 0;
 }
 
+static int
+handle_dev_info(const char *cmd __rte_unused,
+		const char *params,
+		struct rte_tel_data *d)
+{
+	uint8_t dev_id;
+	struct rte_eventdev *dev;
+	char *end_param;
+
+	if (params == NULL || strlen(params) == 0 || !isdigit(*params))
+		return -1;
+
+	dev_id = strtoul(params, &end_param, 10);
+	if (*end_param != '\0')
+		RTE_EDEV_LOG_DEBUG(
+			"Extra parameters passed to eventdev telemetry command, ignoring");
+
+	RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
+	dev = &rte_eventdevs[dev_id];
+
+	rte_tel_data_start_dict(d);
+	rte_tel_data_add_dict_int(d, "dev_id", dev_id);
+	rte_tel_data_add_dict_string(d, "dev_name", dev->dev->name);
+	rte_tel_data_add_dict_string(d, "dev_driver", dev->dev->driver->name);
+	rte_tel_data_add_dict_string(d, "state",
+		dev->data->dev_started ? "started" : "stopped");
+	rte_tel_data_add_dict_int(d, "socket_id", dev->data->socket_id);
+	rte_tel_data_add_dict_int(d, "nb_queues", dev->data->nb_queues);
+	rte_tel_data_add_dict_int(d, "nb_ports", dev->data->nb_ports);
+	rte_tel_data_add_dict_uint_hex(d, "capabilities", dev->data->event_dev_cap,
+		sizeof(dev->data->event_dev_cap) * CHAR_BIT);
+
+	return 0;
+}
+
 static int
 handle_port_list(const char *cmd __rte_unused,
 		 const char *params,
@@ -2030,6 +2065,8 @@ RTE_INIT(eventdev_init_telemetry)
 {
 	rte_telemetry_register_cmd("/eventdev/dev_list", handle_dev_list,
 			"Returns list of available eventdevs. Takes no parameters");
+	rte_telemetry_register_cmd("/eventdev/dev_info", handle_dev_info,
+			"Returns basic info about an eventdev. Parameter: DevID");
 	rte_telemetry_register_cmd("/eventdev/port_list", handle_port_list,
 			"Returns list of available ports. Parameter: DevID");
 	rte_telemetry_register_cmd("/eventdev/queue_list", handle_queue_list,
-- 
2.43.0