net: bql: add __netdev_tx_sent_queue()

[sfrench/cifs-2.6.git] / include / linux / netdevice.h

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index dc1d9ed33b3192e9406b17c3107b3235b28ff1b9..857f8abf7b91bc79731873fc8f68e31f6bff4d03 100644 (file)
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3190,6 +3190,26 @@ static inline void netdev_tx_sent_queue(struct netdev_queue *dev_queue,
 #endif
 }
 
+/* Variant of netdev_tx_sent_queue() for drivers that are aware
+ * that they should not test BQL status themselves.
+ * We do want to change __QUEUE_STATE_STACK_XOFF only for the last
+ * skb of a batch.
+ * Returns true if the doorbell must be used to kick the NIC.
+ */
+static inline bool __netdev_tx_sent_queue(struct netdev_queue *dev_queue,
+                                         unsigned int bytes,
+                                         bool xmit_more)
+{
+       if (xmit_more) {
+#ifdef CONFIG_BQL
+               dql_queued(&dev_queue->dql, bytes);
+#endif
+               return netif_tx_queue_stopped(dev_queue);
+       }
+       netdev_tx_sent_queue(dev_queue, bytes);
+       return true;
+}
+
 /**
  *     netdev_sent_queue - report the number of bytes queued to hardware
  *     @dev: network device