eventdev: add device started attribute

This commit adds an attribute to the eventdev, allowing applications
to retrieve if the eventdev is running or stopped. Note that no API
or ABI changes were required in adding the statistic, and code changes
are minimal.

Signed-off-by: Harry van Haaren <harry.van.haaren@intel.com>
Acked-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>

diff --git a/lib/librte_eventdev/rte_eventdev.c b/lib/librte_eventdev/rte_eventdev.c
index 2bf8b6b..c5db32f 100644 (file)
--- a/lib/librte_eventdev/rte_eventdev.c
+++ b/lib/librte_eventdev/rte_eventdev.c
@@ -744,6 +744,9 @@ rte_event_dev_attr_get(uint8_t dev_id, uint32_t attr_id,
        case RTE_EVENT_DEV_ATTR_QUEUE_COUNT:
                *attr_value = dev->data->nb_queues;
                break;
+       case RTE_EVENT_DEV_ATTR_STARTED:
+               *attr_value = dev->data->dev_started;
+               break;
        default:
                return -EINVAL;
        }

diff --git a/lib/librte_eventdev/rte_eventdev.h b/lib/librte_eventdev/rte_eventdev.h
index 97a46af..ec7aabd 100644 (file)
--- a/lib/librte_eventdev/rte_eventdev.h
+++ b/lib/librte_eventdev/rte_eventdev.h
@@ -407,6 +407,10 @@ rte_event_dev_info_get(uint8_t dev_id, struct rte_event_dev_info *dev_info);
  * The count of queues.
  */
 #define RTE_EVENT_DEV_ATTR_QUEUE_COUNT 1
+/**
+ * The status of the device, zero for stopped, non-zero for started.
+ */
+#define RTE_EVENT_DEV_ATTR_STARTED 2
 
 /**
  * Get an attribute from a device.