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;
}
static int rt2400pci_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
struct ieee80211_tx_control *control)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
struct rt2x00_intf *intf = vif_to_intf(control->vif);
struct queue_entry_priv_pci_tx *priv_tx;
struct skb_frame_desc *skbdesc;
u32 reg;
if (unlikely(!intf->beacon))
return -ENOBUFS;
priv_tx = intf->beacon->priv_data;
/*
* Fill in skb descriptor
*/
skbdesc = get_skb_frame_desc(skb);
memset(skbdesc, 0, sizeof(*skbdesc));
skbdesc->flags |= FRAME_DESC_DRIVER_GENERATED;
skbdesc->data = skb->data;
skbdesc->data_len = skb->len;
skbdesc->desc = priv_tx->desc;
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.
*/
rt2x00pci_register_read(rt2x00dev, CSR14, ®);
rt2x00_set_field32(®, CSR14_TSF_COUNT, 0);
rt2x00_set_field32(®, CSR14_TBCN, 0);
rt2x00_set_field32(®, CSR14_BEACON_GEN, 0);
rt2x00pci_register_write(rt2x00dev, CSR14, reg);
/*
* mac80211 doesn't provide the control->queue variable
* for beacons. Set our own queue identification so
* it can be used during descriptor initialization.
*/
control->queue = RT2X00_BCN_QUEUE_BEACON;
rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
/*
* Enable beacon generation.
* Write entire beacon with descriptor to register,
* and kick the beacon generator.
*/
memcpy(priv_tx->data, skb->data, skb->len);
rt2x00dev->ops->lib->kick_tx_queue(rt2x00dev, control->queue);
return 0;
}
