kni: query the name of an instance

When a KNI object is created, a name is assigned to it which is stored
internally. There is also an API function to look up a KNI object by
name, but there is no API to query the current name of an existing
KNI object. This patch adds just such an API.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Helin Zhang <helin.zhang@intel.com>

lib/librte_kni/rte_kni.c

@@ -674,6 +674,12 @@ rte_kni_get(const char *name)
 	return NULL;
 }
 
+const char *
+rte_kni_get_name(const struct rte_kni *kni)
+{
+	return kni->name;
+}
+
 /*
  * It is deprecated and just for backward compatibility.
  */

lib/librte_kni/rte_kni.h

@@ -247,6 +247,16 @@ extern uint8_t rte_kni_get_port_id(struct rte_kni *kni) \
  */
 extern struct rte_kni *rte_kni_get(const char *name);
 
+/**
+ * Get the name given to a KNI device
+ *
+ * @param kni
+ *   The KNI instance to query
+ * @return
+ *   The pointer to the KNI name
+ */
+extern const char *rte_kni_get_name(const struct rte_kni *kni);
+
 /**
  * Get the KNI context of the specific port.
  *

lib/librte_kni/rte_kni_version.map

@@ -5,6 +5,7 @@ DPDK_2.0 {
 	rte_kni_close;
 	rte_kni_create;
 	rte_kni_get;
+	rte_kni_get_name;
 	rte_kni_get_port_id;
 	rte_kni_handle_request;
 	rte_kni_info_get;