rt2x00: Implement tx_frames_pending mac80211 callback function.

Implementing this callback function will cause mac80211 refrain from
going to powersave state when there are still untransmitted TX frames
in the queues.
This would exactly mimic the behaviour of the legacy vendor driver which
also doesn't go in powersave mode if there are still TX frames that are not
transmitted.
This should make powersaving and rt2x00 a better couple.

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

9 files changed, 22 insertions, 0 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2400pci.c b/drivers/net/wireless/rt2x00/rt2400pci.c
index 937f9e8bf05f..76bcc3547976 100644
--- a/drivers/net/wireless/rt2x00/rt2400pci.c
+++ b/drivers/net/wireless/rt2x00/rt2400pci.c
@@ -1723,6 +1723,7 @@ static const struct ieee80211_ops rt2400pci_mac80211_ops = {
 	.set_antenna		= rt2x00mac_set_antenna,
 	.get_antenna		= rt2x00mac_get_antenna,
 	.get_ringparam		= rt2x00mac_get_ringparam,
+	.tx_frames_pending	= rt2x00mac_tx_frames_pending,
 };
 
 static const struct rt2x00lib_ops rt2400pci_rt2x00_ops = {
diff --git a/drivers/net/wireless/rt2x00/rt2500pci.c b/drivers/net/wireless/rt2x00/rt2500pci.c
index d27d7b8ba3b6..c288d951c034 100644
--- a/drivers/net/wireless/rt2x00/rt2500pci.c
+++ b/drivers/net/wireless/rt2x00/rt2500pci.c
@@ -2016,6 +2016,7 @@ static const struct ieee80211_ops rt2500pci_mac80211_ops = {
 	.set_antenna		= rt2x00mac_set_antenna,
 	.get_antenna		= rt2x00mac_get_antenna,
 	.get_ringparam		= rt2x00mac_get_ringparam,
+	.tx_frames_pending	= rt2x00mac_tx_frames_pending,
 };
 
 static const struct rt2x00lib_ops rt2500pci_rt2x00_ops = {
diff --git a/drivers/net/wireless/rt2x00/rt2500usb.c b/drivers/net/wireless/rt2x00/rt2500usb.c
index 15237c275486..53c5f878f61d 100644
--- a/drivers/net/wireless/rt2x00/rt2500usb.c
+++ b/drivers/net/wireless/rt2x00/rt2500usb.c
@@ -1827,6 +1827,7 @@ static const struct ieee80211_ops rt2500usb_mac80211_ops = {
 	.set_antenna		= rt2x00mac_set_antenna,
 	.get_antenna		= rt2x00mac_get_antenna,
 	.get_ringparam		= rt2x00mac_get_ringparam,
+	.tx_frames_pending	= rt2x00mac_tx_frames_pending,
 };
 
 static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = {
diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c
index fd994490f58e..5319ed921a88 100644
--- a/drivers/net/wireless/rt2x00/rt2800pci.c
+++ b/drivers/net/wireless/rt2x00/rt2800pci.c
@@ -1031,6 +1031,7 @@ static const struct ieee80211_ops rt2800pci_mac80211_ops = {
 	.flush			= rt2x00mac_flush,
 	.get_survey		= rt2800_get_survey,
 	.get_ringparam		= rt2x00mac_get_ringparam,
+	.tx_frames_pending	= rt2x00mac_tx_frames_pending,
 };
 
 static const struct rt2800_ops rt2800pci_rt2800_ops = {
diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c
index af230583d0a6..59e77797c0fa 100644
--- a/drivers/net/wireless/rt2x00/rt2800usb.c
+++ b/drivers/net/wireless/rt2x00/rt2800usb.c
@@ -757,6 +757,7 @@ static const struct ieee80211_ops rt2800usb_mac80211_ops = {
 	.flush			= rt2x00mac_flush,
 	.get_survey		= rt2800_get_survey,
 	.get_ringparam		= rt2x00mac_get_ringparam,
+	.tx_frames_pending	= rt2x00mac_tx_frames_pending,
 };
 
 static const struct rt2800_ops rt2800usb_rt2800_ops = {
diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
index c446db69bd3c..db435abbd57a 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -1276,6 +1276,7 @@ int rt2x00mac_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant);
 int rt2x00mac_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant);
 void rt2x00mac_get_ringparam(struct ieee80211_hw *hw,
 			     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max);
+bool rt2x00mac_tx_frames_pending(struct ieee80211_hw *hw);
 
 /*
  * Driver allocation handlers.
diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c
index 93bec140e598..8efab3983528 100644
--- a/drivers/net/wireless/rt2x00/rt2x00mac.c
+++ b/drivers/net/wireless/rt2x00/rt2x00mac.c
@@ -818,3 +818,17 @@ void rt2x00mac_get_ringparam(struct ieee80211_hw *hw,
 	*rx_max = rt2x00dev->rx->limit;
 }
 EXPORT_SYMBOL_GPL(rt2x00mac_get_ringparam);
+
+bool rt2x00mac_tx_frames_pending(struct ieee80211_hw *hw)
+{
+	struct rt2x00_dev *rt2x00dev = hw->priv;
+	struct data_queue *queue;
+
+	tx_queue_for_each(rt2x00dev, queue) {
+		if (!rt2x00queue_empty(queue))
+			return true;
+	}
+
+	return false;
+}
+EXPORT_SYMBOL_GPL(rt2x00mac_tx_frames_pending);
diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c
index 9d35ec16a3a5..53110b83bf6e 100644
--- a/drivers/net/wireless/rt2x00/rt61pci.c
+++ b/drivers/net/wireless/rt2x00/rt61pci.c
@@ -2982,6 +2982,7 @@ static const struct ieee80211_ops rt61pci_mac80211_ops = {
 	.set_antenna		= rt2x00mac_set_antenna,
 	.get_antenna		= rt2x00mac_get_antenna,
 	.get_ringparam		= rt2x00mac_get_ringparam,
+	.tx_frames_pending	= rt2x00mac_tx_frames_pending,
 };
 
 static const struct rt2x00lib_ops rt61pci_rt2x00_ops = {
diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c
index ad20953cbf05..6a93939f44e8 100644
--- a/drivers/net/wireless/rt2x00/rt73usb.c
+++ b/drivers/net/wireless/rt2x00/rt73usb.c
@@ -2314,6 +2314,7 @@ static const struct ieee80211_ops rt73usb_mac80211_ops = {
 	.set_antenna		= rt2x00mac_set_antenna,
 	.get_antenna		= rt2x00mac_get_antenna,
 	.get_ringparam		= rt2x00mac_get_ringparam,
+	.tx_frames_pending	= rt2x00mac_tx_frames_pending,
 };
 
 static const struct rt2x00lib_ops rt73usb_rt2x00_ops = {