rt2x00: Implement get_ringparam callback function

With the get_ringparam callback function we can export ring parameters
to ethtool through the mac80211 interface.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c
index 4770156df1a..6d1d38329e5 100644
--- a/drivers/net/wireless/rt2x00/rt2x00mac.c
+++ b/drivers/net/wireless/rt2x00/rt2x00mac.c
@@ -737,3 +737,19 @@ void rt2x00mac_flush(struct ieee80211_hw *hw, bool drop)
 		rt2x00queue_flush_queue(queue, drop);
 }
 EXPORT_SYMBOL_GPL(rt2x00mac_flush);
+
+void rt2x00mac_get_ringparam(struct ieee80211_hw *hw,
+			     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
+{
+	struct rt2x00_dev *rt2x00dev = hw->priv;
+	struct data_queue *queue;
+
+	tx_queue_for_each(rt2x00dev, queue) {
+		*tx += queue->length;
+		*tx_max += queue->limit;
+	}
+
+	*rx = rt2x00dev->rx->length;
+	*rx_max = rt2x00dev->rx->limit;
+}
+EXPORT_SYMBOL_GPL(rt2x00mac_get_ringparam);