/**
* zd_mac_tx_to_dev - callback for USB layer
* @skb: a &sk_buff pointer
* @error: error value, 0 if transmission successful
*
* Informs the MAC layer that the frame has successfully transferred to the
* device. If an ACK is required and the transfer to the device has been
* successful, the packets are put on the @ack_wait_queue with
* the control set removed.
*/
void zd_mac_tx_to_dev(struct sk_buff *skb, int error)
{
struct zd_tx_skb_control_block *cb =
(struct zd_tx_skb_control_block *)skb->cb;
struct ieee80211_hw *hw = cb->hw;
if (likely(cb->control)) {
skb_pull(skb, sizeof(struct zd_ctrlset));
if (unlikely(error ||
(cb->control->flags & IEEE80211_TXCTL_NO_ACK)))
{
struct ieee80211_tx_status status;
memset(&status, 0, sizeof(status));
tx_status(hw, skb, &status, !error);
} else {
struct sk_buff_head *q =
&zd_hw_mac(hw)->ack_wait_queue;
skb_queue_tail(q, skb);
while (skb_queue_len(q) > ZD_MAC_MAX_ACK_WAITERS)
zd_mac_tx_failed(hw);
}
} else {
kfree_tx_skb(skb);
}
}
static void int_urb_complete(struct urb *urb)
{
int r;
struct usb_int_header *hdr;
switch (urb->status) {
case 0:
break;
case -ESHUTDOWN:
case -EINVAL:
case -ENODEV:
case -ENOENT:
case -ECONNRESET:
case -EPIPE:
dev_dbg_f(urb_dev(urb), "urb %p error %d\n", urb, urb->status);
return;
default:
dev_dbg_f(urb_dev(urb), "urb %p error %d\n", urb, urb->status);
goto resubmit;
}
if (urb->actual_length < sizeof(hdr)) {
dev_dbg_f(urb_dev(urb), "error: urb %p to small\n", urb);
goto resubmit;
}
hdr = urb->transfer_buffer;
if (hdr->type != USB_INT_TYPE) {
dev_dbg_f(urb_dev(urb), "error: urb %p wrong type\n", urb);
goto resubmit;
}
switch (hdr->id) {
case USB_INT_ID_REGS:
handle_regs_int(urb);
break;
case USB_INT_ID_RETRY_FAILED:
zd_mac_tx_failed(urb);
break;
default:
dev_dbg_f(urb_dev(urb), "error: urb %p unknown id %x\n", urb,
(unsigned int)hdr->id);
goto resubmit;
}
resubmit:
r = usb_submit_urb(urb, GFP_ATOMIC);
if (r) {
dev_dbg_f(urb_dev(urb), "error: resubmit urb %p err code %d\n",
urb, r);
/* TODO: add worker to reset intr->urb */
}
return;
}
