rt2x00: Reorganize beacon handling

With the new beacon handling from mac80211 we can
reorganize the beacon handling in rt2x00 as well.
This patch will move the function to the TX handlers,
and move all duplicate code into rt2x00queue.c.

After this change the descriptor helper functions
from rt2x00queue.c no longer need to be exported
outside of rt2x00lib and can be declared static.

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

1 files changed, 60 insertions, 94 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2500usb.c b/drivers/net/wireless/rt2x00/rt2500usb.c
index 8ce1726d750..1423fd0bdbb 100644
--- a/drivers/net/wireless/rt2x00/rt2500usb.c
+++ b/drivers/net/wireless/rt2x00/rt2500usb.c
@@ -1100,6 +1100,65 @@ static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 	rt2x00_desc_write(txd, 0, word);
 }
 
+/*
+ * TX data initialization
+ */
+static void rt2500usb_beacondone(struct urb *urb);
+
+static void rt2500usb_write_beacon(struct queue_entry *entry)
+{
+	struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
+	struct usb_device *usb_dev = to_usb_device_intf(rt2x00dev->dev);
+	struct queue_entry_priv_usb_bcn *bcn_priv = entry->priv_data;
+	struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
+	int pipe = usb_sndbulkpipe(usb_dev, 1);
+	int length;
+	u16 reg;
+
+	/*
+	 * Add the descriptor in front of the skb.
+	 */
+	skb_push(entry->skb, entry->queue->desc_size);
+	memcpy(entry->skb->data, skbdesc->desc, skbdesc->desc_len);
+	skbdesc->desc = entry->skb->data;
+
+	/*
+	 * Disable beaconing while we are reloading the beacon data,
+	 * otherwise we might be sending out invalid data.
+	 */
+	rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
+	rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 0);
+	rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 0);
+	rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
+	rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
+
+	/*
+	 * USB devices cannot blindly pass the skb->len as the
+	 * length of the data to usb_fill_bulk_urb. Pass the skb
+	 * to the driver to determine what the length should be.
+	 */
+	length = rt2x00dev->ops->lib->get_tx_data_len(rt2x00dev, entry->skb);
+
+	usb_fill_bulk_urb(bcn_priv->urb, usb_dev, pipe,
+			  entry->skb->data, length, rt2500usb_beacondone,
+			  entry);
+
+	/*
+	 * Second we need to create the guardian byte.
+	 * We only need a single byte, so lets recycle
+	 * the 'flags' field we are not using for beacons.
+	 */
+	bcn_priv->guardian_data = 0;
+	usb_fill_bulk_urb(bcn_priv->guardian_urb, usb_dev, pipe,
+			  &bcn_priv->guardian_data, 1, rt2500usb_beacondone,
+			  entry);
+
+	/*
+	 * Send out the guardian byte.
+	 */
+	usb_submit_urb(bcn_priv->guardian_urb, GFP_ATOMIC);
+}
+
 static int rt2500usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
 				     struct sk_buff *skb)
 {
@@ -1115,9 +1174,6 @@ static int rt2500usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
 	return length;
 }
 
-/*
- * TX data initialization
- */
 static void rt2500usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
 				    const enum data_queue_qid queue)
 {
@@ -1672,96 +1728,6 @@ static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
 	return 0;
 }
 
-/*
- * IEEE80211 stack callback functions.
- */
-static int rt2500usb_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
-{
-	struct rt2x00_dev *rt2x00dev = hw->priv;
-	struct usb_device *usb_dev = to_usb_device_intf(rt2x00dev->dev);
-	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
-	struct rt2x00_intf *intf = vif_to_intf(tx_info->control.vif);
-	struct queue_entry_priv_usb_bcn *bcn_priv;
-	struct skb_frame_desc *skbdesc;
-	struct txentry_desc txdesc;
-	int pipe = usb_sndbulkpipe(usb_dev, 1);
-	int length;
-	u16 reg;
-
-	if (unlikely(!intf->beacon))
-		return -ENOBUFS;
-
-	bcn_priv = intf->beacon->priv_data;
-
-	/*
-	 * Copy all TX descriptor information into txdesc,
-	 * after that we are free to use the skb->cb array
-	 * for our information.
-	 */
-	intf->beacon->skb = skb;
-	rt2x00queue_create_tx_descriptor(intf->beacon, &txdesc);
-
-	/*
-	 * Add the descriptor in front of the skb.
-	 */
-	skb_push(skb, intf->beacon->queue->desc_size);
-	memset(skb->data, 0, intf->beacon->queue->desc_size);
-
-	/*
-	 * Fill in skb descriptor
-	 */
-	skbdesc = get_skb_frame_desc(skb);
-	memset(skbdesc, 0, sizeof(*skbdesc));
-	skbdesc->desc = skb->data;
-	skbdesc->desc_len = intf->beacon->queue->desc_size;
-	skbdesc->entry = intf->beacon;
-
-	/*
-	 * Disable beaconing while we are reloading the beacon data,
-	 * otherwise we might be sending out invalid data.
-	 */
-	rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
-	rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 0);
-	rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 0);
-	rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
-	rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
-
-	rt2x00queue_write_tx_descriptor(intf->beacon, &txdesc);
-
-	/*
-	 * USB devices cannot blindly pass the skb->len as the
-	 * length of the data to usb_fill_bulk_urb. Pass the skb
-	 * to the driver to determine what the length should be.
-	 */
-	length = rt2500usb_get_tx_data_len(rt2x00dev, skb);
-
-	usb_fill_bulk_urb(bcn_priv->urb, usb_dev, pipe,
-			  skb->data, length, rt2500usb_beacondone,
-			  intf->beacon);
-
-	/*
-	 * Second we need to create the guardian byte.
-	 * We only need a single byte, so lets recycle
-	 * the 'flags' field we are not using for beacons.
-	 */
-	bcn_priv->guardian_data = 0;
-	usb_fill_bulk_urb(bcn_priv->guardian_urb, usb_dev, pipe,
-			  &bcn_priv->guardian_data, 1, rt2500usb_beacondone,
-			  intf->beacon);
-
-	/*
-	 * Send out the guardian byte.
-	 */
-	usb_submit_urb(bcn_priv->guardian_urb, GFP_ATOMIC);
-
-	/*
-	 * Enable beacon generation.
-	 */
-	rt2500usb_kick_tx_queue(rt2x00dev, QID_BEACON);
-
-	return 0;
-}
-
 static const struct ieee80211_ops rt2500usb_mac80211_ops = {
 	.tx			= rt2x00mac_tx,
 	.start			= rt2x00mac_start,
@@ -1789,10 +1755,10 @@ static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = {
 	.link_tuner		= rt2500usb_link_tuner,
 	.write_tx_desc		= rt2500usb_write_tx_desc,
 	.write_tx_data		= rt2x00usb_write_tx_data,
+	.write_beacon		= rt2500usb_write_beacon,
 	.get_tx_data_len	= rt2500usb_get_tx_data_len,
 	.kick_tx_queue		= rt2500usb_kick_tx_queue,
 	.fill_rxdone		= rt2500usb_fill_rxdone,
-	.beacon_update		= rt2500usb_beacon_update,
 	.config_filter		= rt2500usb_config_filter,
 	.config_intf		= rt2500usb_config_intf,
 	.config_erp		= rt2500usb_config_erp,