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>

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index ff137fd7714f2909aca78a352990366cb02005b9..25cc192cbe4c359c0a7b26db3dc85db5b7835d38 100644 (file)
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1607,6 +1607,16 @@ 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 0d463c80c4045359a8c8f0dc6df29903eae4f8a0..24400618190c65d9c179ecb20ca6ceadaffdaeb0 100644 (file)
--- 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;