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 937f9e8bf05..76bcc354797 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 d27d7b8ba3b..c288d951c03 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 15237c27548..53c5f878f61 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 fd994490f58..5319ed921a8 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 af230583d0a..59e77797c0f 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 c446db69bd3..db435abbd57 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 93bec140e59..8efab398352 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 9d35ec16a3a..53110b83bf6 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 ad20953cbf0..6a93939f44e 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 = {