void rt2x00usb_kick_queue(struct data_queue *queue)
{
switch (queue->qid) {
case QID_AC_VO:
case QID_AC_VI:
case QID_AC_BE:
case QID_AC_BK:
if (!rt2x00queue_empty(queue))
rt2x00queue_for_each_entry(queue,
Q_INDEX_DONE,
Q_INDEX,
NULL,
rt2x00usb_kick_tx_entry);
break;
case QID_RX:
if (!rt2x00queue_full(queue))
rt2x00queue_for_each_entry(queue,
Q_INDEX,
Q_INDEX_DONE,
NULL,
rt2x00usb_kick_rx_entry);
break;
default:
break;
}
}
int rt2x00usb_write_tx_data(struct rt2x00_dev *rt2x00dev,
struct data_queue *queue, struct sk_buff *skb,
struct ieee80211_tx_control *control)
{
struct usb_device *usb_dev = rt2x00dev_usb_dev(rt2x00dev);
struct queue_entry *entry = rt2x00queue_get_entry(queue, Q_INDEX);
struct queue_entry_priv_usb_tx *priv_tx = entry->priv_data;
struct skb_frame_desc *skbdesc;
u32 length;
if (rt2x00queue_full(queue))
return -EINVAL;
if (test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) {
ERROR(rt2x00dev,
"Arrived at non-free entry in the non-full queue %d.\n"
"Please file bug report to %s.\n",
control->queue, DRV_PROJECT);
return -EINVAL;
}
/*
* Add the descriptor in front of the skb.
*/
skb_push(skb, queue->desc_size);
memset(skb->data, 0, queue->desc_size);
/*
* Fill in skb descriptor
*/
skbdesc = get_skb_frame_desc(skb);
skbdesc->data = skb->data + queue->desc_size;
skbdesc->data_len = skb->len - queue->desc_size;
skbdesc->desc = skb->data;
skbdesc->desc_len = queue->desc_size;
skbdesc->entry = entry;
memcpy(&priv_tx->control, control, sizeof(priv_tx->control));
rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
/*
* 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, skb);
/*
* Initialize URB and send the frame to the device.
*/
__set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
usb_fill_bulk_urb(priv_tx->urb, usb_dev, usb_sndbulkpipe(usb_dev, 1),
skb->data, length, rt2x00usb_interrupt_txdone, entry);
usb_submit_urb(priv_tx->urb, GFP_ATOMIC);
rt2x00queue_index_inc(queue, Q_INDEX);
return 0;
}
/*
* TX data handlers.
*/
static void rt2x00usb_interrupt_txdone(struct urb *urb)
{
struct queue_entry *entry = (struct queue_entry *)urb->context;
struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
struct queue_entry_priv_usb_tx *priv_tx = entry->priv_data;
struct txdone_entry_desc txdesc;
__le32 *txd = (__le32 *)entry->skb->data;
u32 word;
if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) ||
!__test_and_clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags))
return;
rt2x00_desc_read(txd, 0, &word);
/*
* Remove the descriptor data from the buffer.
*/
skb_pull(entry->skb, entry->queue->desc_size);
/*
* Obtain the status about this packet.
*/
txdesc.status = !urb->status ? TX_SUCCESS : TX_FAIL_RETRY;
txdesc.retry = 0;
txdesc.control = &priv_tx->control;
rt2x00lib_txdone(entry, &txdesc);
/*
* Make this entry available for reuse.
*/
entry->flags = 0;
rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE);
/*
* If the data queue was full before the txdone handler
* we must make sure the packet queue in the mac80211 stack
* is reenabled when the txdone handler has finished.
*/
if (!rt2x00queue_full(entry->queue))
ieee80211_wake_queue(rt2x00dev->hw, priv_tx->control.queue);
}
