/*
* Add buffer into wmm tx queue and queue work to transmit it.
*/
int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb)
{
struct netdev_queue *txq;
int index = mwifiex_1d_to_wmm_queue[skb->priority];
if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) {
txq = netdev_get_tx_queue(priv->netdev, index);
if (!netif_tx_queue_stopped(txq)) {
netif_tx_stop_queue(txq);
mwifiex_dbg(priv->adapter, DATA,
"stop queue: %d\n", index);
}
}
if (mwifiex_bypass_tx_queue(priv, skb)) {
atomic_inc(&priv->adapter->tx_pending);
atomic_inc(&priv->adapter->bypass_tx_pending);
mwifiex_wmm_add_buf_bypass_txqueue(priv, skb);
} else {
atomic_inc(&priv->adapter->tx_pending);
mwifiex_wmm_add_buf_txqueue(priv, skb);
}
mwifiex_queue_main_work(priv->adapter);
return 0;
}
static int mwifiex_process_rx(struct mwifiex_adapter *adapter)
{
unsigned long flags;
struct sk_buff *skb;
struct mwifiex_rxinfo *rx_info;
spin_lock_irqsave(&adapter->rx_proc_lock, flags);
if (adapter->rx_processing || adapter->rx_locked) {
spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
goto exit_rx_proc;
} else {
adapter->rx_processing = true;
spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
}
/* Check for Rx data */
while ((skb = skb_dequeue(&adapter->rx_data_q))) {
atomic_dec(&adapter->rx_pending);
if ((adapter->delay_main_work ||
adapter->iface_type == MWIFIEX_USB) &&
(atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) {
if (adapter->if_ops.submit_rem_rx_urbs)
adapter->if_ops.submit_rem_rx_urbs(adapter);
adapter->delay_main_work = false;
mwifiex_queue_main_work(adapter);
}
rx_info = MWIFIEX_SKB_RXCB(skb);
if (rx_info->buf_type == MWIFIEX_TYPE_AGGR_DATA) {
if (adapter->if_ops.deaggr_pkt)
adapter->if_ops.deaggr_pkt(adapter, skb);
dev_kfree_skb_any(skb);
} else {
mwifiex_handle_rx_packet(adapter, skb);
}
}
spin_lock_irqsave(&adapter->rx_proc_lock, flags);
adapter->rx_processing = false;
spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
exit_rx_proc:
return 0;
}
static void mwifiex_usb_tx_complete(struct urb *urb)
{
struct urb_context *context = (struct urb_context *)(urb->context);
struct mwifiex_adapter *adapter = context->adapter;
struct usb_card_rec *card = adapter->card;
struct usb_tx_data_port *port;
int i;
mwifiex_dbg(adapter, INFO,
"%s: status: %d\n", __func__, urb->status);
if (context->ep == card->tx_cmd_ep) {
mwifiex_dbg(adapter, CMD,
"%s: CMD\n", __func__);
atomic_dec(&card->tx_cmd_urb_pending);
adapter->cmd_sent = false;
} else {
mwifiex_dbg(adapter, DATA,
"%s: DATA\n", __func__);
mwifiex_write_data_complete(adapter, context->skb, 0,
urb->status ? -1 : 0);
for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
port = &card->port[i];
if (context->ep == port->tx_data_ep) {
atomic_dec(&port->tx_data_urb_pending);
port->block_status = false;
break;
}
}
adapter->data_sent = false;
}
if (card->mc_resync_flag)
mwifiex_multi_chan_resync(adapter);
mwifiex_queue_main_work(adapter);
return;
}
static void mwifiex_usb_tx_complete(struct urb *urb)
{
struct urb_context *context = (struct urb_context *)(urb->context);
struct mwifiex_adapter *adapter = context->adapter;
struct usb_card_rec *card = adapter->card;
dev_dbg(adapter->dev, "%s: status: %d\n", __func__, urb->status);
if (context->ep == card->tx_cmd_ep) {
dev_dbg(adapter->dev, "%s: CMD\n", __func__);
atomic_dec(&card->tx_cmd_urb_pending);
adapter->cmd_sent = false;
} else {
dev_dbg(adapter->dev, "%s: DATA\n", __func__);
atomic_dec(&card->tx_data_urb_pending);
mwifiex_write_data_complete(adapter, context->skb, 0,
urb->status ? -1 : 0);
}
mwifiex_queue_main_work(adapter);
return;
}
static void mwifiex_usb_rx_complete(struct urb *urb)
{
struct urb_context *context = (struct urb_context *)urb->context;
struct mwifiex_adapter *adapter = context->adapter;
struct sk_buff *skb = context->skb;
struct usb_card_rec *card;
int recv_length = urb->actual_length;
int size, status;
if (!adapter || !adapter->card) {
pr_err("mwifiex adapter or card structure is not valid\n");
return;
}
card = (struct usb_card_rec *)adapter->card;
if (card->rx_cmd_ep == context->ep)
atomic_dec(&card->rx_cmd_urb_pending);
else
atomic_dec(&card->rx_data_urb_pending);
if (recv_length) {
if (urb->status || (adapter->surprise_removed)) {
dev_err(adapter->dev,
"URB status is failed: %d\n", urb->status);
/* Do not free skb in case of command ep */
if (card->rx_cmd_ep != context->ep)
dev_kfree_skb_any(skb);
goto setup_for_next;
}
if (skb->len > recv_length)
skb_trim(skb, recv_length);
else
skb_put(skb, recv_length - skb->len);
status = mwifiex_usb_recv(adapter, skb, context->ep);
dev_dbg(adapter->dev, "info: recv_length=%d, status=%d\n",
recv_length, status);
if (status == -EINPROGRESS) {
mwifiex_queue_main_work(adapter);
/* urb for data_ep is re-submitted now;
* urb for cmd_ep will be re-submitted in callback
* mwifiex_usb_recv_complete
*/
if (card->rx_cmd_ep == context->ep)
return;
} else {
if (status == -1)
dev_err(adapter->dev,
"received data processing failed!\n");
/* Do not free skb in case of command ep */
if (card->rx_cmd_ep != context->ep)
dev_kfree_skb_any(skb);
}
} else if (urb->status) {
if (!adapter->is_suspended) {
dev_warn(adapter->dev,
"Card is removed: %d\n", urb->status);
adapter->surprise_removed = true;
}
dev_kfree_skb_any(skb);
return;
} else {
/* Do not free skb in case of command ep */
if (card->rx_cmd_ep != context->ep)
dev_kfree_skb_any(skb);
/* fall through setup_for_next */
}
setup_for_next:
if (card->rx_cmd_ep == context->ep)
size = MWIFIEX_RX_CMD_BUF_SIZE;
else
size = MWIFIEX_RX_DATA_BUF_SIZE;
if (card->rx_cmd_ep == context->ep) {
mwifiex_usb_submit_rx_urb(context, size);
} else {
context->skb = NULL;
if (atomic_read(&adapter->rx_pending) <= HIGH_RX_PENDING)
mwifiex_usb_submit_rx_urb(context, size);
}
return;
}
