mac80211: add ieee80211_queue_stopped)

This patch adds ieee80211_queue_stopped that let drivers to query
queue status

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 17 insertions, 0 deletions

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index ff137fd7714f..25cc192cbe4c 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1608,6 +1608,16 @@ void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue);
 void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue);
 
 /**
+ * ieee80211_queue_stopped - test status of the queue
+ * @hw: pointer as obtained from ieee80211_alloc_hw().
+ * @queue: queue number (counted from zero).
+ *
+ * Drivers should use this function instead of netif_stop_queue.
+ */
+
+int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue);
+
+/**
  * ieee80211_stop_queues - stop all queues
  * @hw: pointer as obtained from ieee80211_alloc_hw().
  *
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 0d463c80c404..24400618190c 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -386,6 +386,13 @@ void ieee80211_stop_queues(struct ieee80211_hw *hw)
 }
 EXPORT_SYMBOL(ieee80211_stop_queues);
 
+int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
+{
+        struct ieee80211_local *local = hw_to_local(hw);
+        return __netif_subqueue_stopped(local->mdev, queue);
+}
+EXPORT_SYMBOL(ieee80211_queue_stopped);
+
 void ieee80211_wake_queues(struct ieee80211_hw *hw)
 {
         int i;