[PATCH 1/1] mac80211: [old MQ] add ieee80211_queue_stopped)

[Tomas Winkler <tomas.winkler@xxxxxxxxx>]

This patch adds ieee80211_queue_stopped that let drivers to query
queue status

This version should support back porting by compat-wireless

Signed-off-by: Tomas Winkler <tomas.winkler@xxxxxxxxx>
---
 include/net/mac80211.h |   10 ++++++++++
 net/mac80211/util.c    |   12 ++++++++++++
 2 files changed, 22 insertions(+), 0 deletions(-)

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 24a69f6..f78209b 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1619,6 +1619,16 @@ 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 02af3e8..ab9538e 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -396,6 +396,18 @@ 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);
+	if (ieee80211_is_multiqueue(local)) {
+		return __netif_subqueue_stopped(local->mdev, queue);
+	} else {
+		WARN_ON(queue != 0);
+		return netif_queue_stopped(local->mdev);
+	}
+}
+EXPORT_SYMBOL(ieee80211_queue_stopped);
+
 void ieee80211_wake_queues(struct ieee80211_hw *hw)
 {
 	int i;
-- 
1.5.4.1

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