/*
* This function handles the command response error case.
*
* For scan response error, the function cancels all the pending
* scan commands and generates an event to inform the applications
* of the scan completion.
*
* For Power Save command failure, we do not retry enter PS
* command in case of Ad-hoc mode.
*
* For all other response errors, the current command buffer is freed
* and returned to the free command queue.
*/
static void
mwifiex_process_cmdresp_error(struct mwifiex_private *priv,
struct host_cmd_ds_command *resp)
{
struct mwifiex_adapter *adapter = priv->adapter;
struct host_cmd_ds_802_11_ps_mode_enh *pm;
unsigned long flags;
mwifiex_dbg(adapter, ERROR,
"CMD_RESP: cmd %#x error, result=%#x\n",
resp->command, resp->result);
if (adapter->curr_cmd->wait_q_enabled)
adapter->cmd_wait_q.status = -1;
switch (le16_to_cpu(resp->command)) {
case HostCmd_CMD_802_11_PS_MODE_ENH:
pm = &resp->params.psmode_enh;
mwifiex_dbg(adapter, ERROR,
"PS_MODE_ENH cmd failed: result=0x%x action=0x%X\n",
resp->result, le16_to_cpu(pm->action));
/* We do not re-try enter-ps command in ad-hoc mode. */
if (le16_to_cpu(pm->action) == EN_AUTO_PS &&
(le16_to_cpu(pm->params.ps_bitmap) & BITMAP_STA_PS) &&
priv->bss_mode == NL80211_IFTYPE_ADHOC)
adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
break;
case HostCmd_CMD_802_11_SCAN:
case HostCmd_CMD_802_11_SCAN_EXT:
mwifiex_cancel_pending_scan_cmd(adapter);
spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
adapter->scan_processing = false;
spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
break;
case HostCmd_CMD_MAC_CONTROL:
break;
case HostCmd_CMD_SDIO_SP_RX_AGGR_CFG:
mwifiex_dbg(adapter, MSG,
"SDIO RX single-port aggregation Not support\n");
break;
default:
break;
}
/* Handling errors here */
mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd);
spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
adapter->curr_cmd = NULL;
spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
}
/*
* This function is used to shutdown the driver.
*
* The following operations are performed sequentially -
* - Check if already shut down
* - Make sure the main process has stopped
* - Clean up the Tx and Rx queues
* - Delete BSS priority tables
* - Free the adapter
* - Notify completion
*/
int
mwifiex_shutdown_drv(struct mwifiex_adapter *adapter)
{
int ret = -EINPROGRESS;
struct mwifiex_private *priv;
s32 i;
unsigned long flags;
struct sk_buff *skb;
/* mwifiex already shutdown */
if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
return 0;
adapter->hw_status = MWIFIEX_HW_STATUS_CLOSING;
/* wait for mwifiex_process to complete */
if (adapter->mwifiex_processing) {
dev_warn(adapter->dev, "main process is still running\n");
return ret;
}
/* cancel current command */
if (adapter->curr_cmd) {
dev_warn(adapter->dev, "curr_cmd is still in processing\n");
del_timer_sync(&adapter->cmd_timer);
mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd);
adapter->curr_cmd = NULL;
}
/* shut down mwifiex */
dev_dbg(adapter->dev, "info: shutdown mwifiex...\n");
/* Clean up Tx/Rx queues and delete BSS priority table */
for (i = 0; i < adapter->priv_num; i++) {
if (adapter->priv[i]) {
priv = adapter->priv[i];
mwifiex_clean_txrx(priv);
mwifiex_delete_bss_prio_tbl(priv);
}
}
spin_lock_irqsave(&adapter->rx_proc_lock, flags);
while ((skb = skb_dequeue(&adapter->rx_data_q))) {
struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb);
atomic_dec(&adapter->rx_pending);
priv = adapter->priv[rx_info->bss_num];
if (priv)
priv->stats.rx_dropped++;
dev_kfree_skb_any(skb);
}
spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
spin_lock(&adapter->mwifiex_lock);
if (adapter->if_ops.data_complete) {
while ((skb = skb_dequeue(&adapter->usb_rx_data_q))) {
struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb);
priv = adapter->priv[rx_info->bss_num];
if (priv)
priv->stats.rx_dropped++;
dev_kfree_skb_any(skb);
adapter->if_ops.data_complete(adapter);
}
}
mwifiex_adapter_cleanup(adapter);
spin_unlock(&adapter->mwifiex_lock);
/* Notify completion */
ret = mwifiex_shutdown_fw_complete(adapter);
return ret;
}