diff --git a/drivers/net/netdev_upperhalf.c b/drivers/net/netdev_upperhalf.c
index b2fb591778..db144235d2 100644
--- a/drivers/net/netdev_upperhalf.c
+++ b/drivers/net/netdev_upperhalf.c
@@ -106,23 +106,6 @@ static int quota_fetch_dec(FAR struct netdev_lowerhalf_s *lower,
   return ret;
 }
 
-/****************************************************************************
- * Name: quota_load
- *
- * Description:
- *   Fetch the quota, works like atomic_load.
- *
- ****************************************************************************/
-
-static int quota_load(FAR struct netdev_lowerhalf_s *lower,
-                      enum netpkt_type_e type)
-{
-  irqstate_t flags = spin_lock_irqsave(NULL);
-  int ret = lower->quota[type];
-  spin_unlock_irqrestore(NULL, flags);
-  return ret;
-}
-
 /****************************************************************************
  * Name: netpkt_get
  *
@@ -232,7 +215,7 @@ netdev_upper_alloc(FAR struct netdev_lowerhalf_s *dev)
 
 static inline bool netdev_upper_can_tx(FAR struct netdev_upperhalf_s *upper)
 {
-  return quota_load(upper->lower, NETPKT_TX) > 0;
+  return netdev_lower_quota_load(upper->lower, NETPKT_TX) > 0;
 }
 
 /****************************************************************************
@@ -840,6 +823,27 @@ void netdev_lower_txdone(FAR struct netdev_lowerhalf_s *dev)
   netdev_upper_queue_work(&dev->netdev);
 }
 
+/****************************************************************************
+ * Name: netdev_lower_quota_load
+ *
+ * Description:
+ *   Fetch the quota, works like atomic_load.
+ *
+ * Input Parameters:
+ *   dev  - The lower half device driver structure
+ *   type - Whether get quota for TX or RX
+ *
+ ****************************************************************************/
+
+int netdev_lower_quota_load(FAR struct netdev_lowerhalf_s *dev,
+                            enum netpkt_type_e type)
+{
+  irqstate_t flags = spin_lock_irqsave(NULL);
+  int ret = dev->quota[type];
+  spin_unlock_irqrestore(NULL, flags);
+  return ret;
+}
+
 /****************************************************************************
  * Name: netpkt_alloc
  *
diff --git a/include/nuttx/net/netdev_lowerhalf.h b/include/nuttx/net/netdev_lowerhalf.h
index 6fdf35872d..958505801a 100644
--- a/include/nuttx/net/netdev_lowerhalf.h
+++ b/include/nuttx/net/netdev_lowerhalf.h
@@ -234,6 +234,21 @@ void netdev_lower_rxready(FAR struct netdev_lowerhalf_s *dev);
 
 void netdev_lower_txdone(FAR struct netdev_lowerhalf_s *dev);
 
+/****************************************************************************
+ * Name: netdev_lower_quota_load
+ *
+ * Description:
+ *   Fetch the quota, use this interface when device is running.
+ *
+ * Input Parameters:
+ *   dev  - The lower half device driver structure
+ *   type - Whether get quota for TX or RX
+ *
+ ****************************************************************************/
+
+int netdev_lower_quota_load(FAR struct netdev_lowerhalf_s *dev,
+                            enum netpkt_type_e type);
+
 /****************************************************************************
  * Name: netpkt_alloc
  *