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, 58 insertions, 6 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c
index ecf57f8f34b..7f442030f5a 100644
--- a/drivers/net/wireless/rt2x00/rt2x00queue.c
+++ b/drivers/net/wireless/rt2x00/rt2x00queue.c
@@ -115,8 +115,8 @@ void rt2x00queue_free_skb(struct rt2x00_dev *rt2x00dev, struct sk_buff *skb)
 	dev_kfree_skb_any(skb);
 }
 
-void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
-				      struct txentry_desc *txdesc)
+static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
+					     struct txentry_desc *txdesc)
 {
 	struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
 	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb);
@@ -240,10 +240,9 @@ void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
 			txdesc->signal |= 0x08;
 	}
 }
-EXPORT_SYMBOL_GPL(rt2x00queue_create_tx_descriptor);
 
-void rt2x00queue_write_tx_descriptor(struct queue_entry *entry,
-				     struct txentry_desc *txdesc)
+static void rt2x00queue_write_tx_descriptor(struct queue_entry *entry,
+					    struct txentry_desc *txdesc)
 {
 	struct data_queue *queue = entry->queue;
 	struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
@@ -273,7 +272,6 @@ void rt2x00queue_write_tx_descriptor(struct queue_entry *entry,
 	    !test_bit(ENTRY_TXD_BURST, &txdesc->flags))
 		rt2x00dev->ops->lib->kick_tx_queue(rt2x00dev, queue->qid);
 }
-EXPORT_SYMBOL_GPL(rt2x00queue_write_tx_descriptor);
 
 int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb)
 {
@@ -323,6 +321,60 @@ int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb)
 	return 0;
 }
 
+int rt2x00queue_update_beacon(struct rt2x00_dev *rt2x00dev,
+			      struct ieee80211_vif *vif)
+{
+	struct rt2x00_intf *intf = vif_to_intf(vif);
+	struct skb_frame_desc *skbdesc;
+	struct txentry_desc txdesc;
+	__le32 desc[16];
+
+	if (unlikely(!intf->beacon))
+		return -ENOBUFS;
+
+	intf->beacon->skb = ieee80211_beacon_get(rt2x00dev->hw, vif);
+	if (!intf->beacon->skb)
+		return -ENOMEM;
+
+	/*
+	 * Copy all TX descriptor information into txdesc,
+	 * after that we are free to use the skb->cb array
+	 * for our information.
+	 */
+	rt2x00queue_create_tx_descriptor(intf->beacon, &txdesc);
+
+	/*
+	 * For the descriptor we use a local array from where the
+	 * driver can move it to the correct location required for
+	 * the hardware.
+	 */
+	memset(desc, 0, sizeof(desc));
+
+	/*
+	 * Fill in skb descriptor
+	 */
+	skbdesc = get_skb_frame_desc(intf->beacon->skb);
+	memset(skbdesc, 0, sizeof(*skbdesc));
+	skbdesc->desc = desc;
+	skbdesc->desc_len = intf->beacon->queue->desc_size;
+	skbdesc->entry = intf->beacon;
+
+	/*
+	 * Write TX descriptor into reserved room in front of the beacon.
+	 */
+	rt2x00queue_write_tx_descriptor(intf->beacon, &txdesc);
+
+	/*
+	 * Send beacon to hardware.
+	 * Also enable beacon generation, which might have been disabled
+	 * by the driver during the config_beacon() callback function.
+	 */
+	rt2x00dev->ops->lib->write_beacon(intf->beacon);
+	rt2x00dev->ops->lib->kick_tx_queue(rt2x00dev, QID_BEACON);
+
+	return 0;
+}
+
 struct data_queue *rt2x00queue_get_queue(struct rt2x00_dev *rt2x00dev,
 					 const enum data_queue_qid queue)
 {