static int r8192_wx_set_scan(struct net_device *dev, struct iw_request_info *a,
union iwreq_data *wrqu, char *b)
{
struct r8192_priv *priv = rtllib_priv(dev);
struct rtllib_device *ieee = priv->rtllib;
enum rt_rf_power_state rtState;
int ret;
if (!(ieee->softmac_features & IEEE_SOFTMAC_SCAN)) {
if ((ieee->state >= RTLLIB_ASSOCIATING) &&
(ieee->state <= RTLLIB_ASSOCIATING_AUTHENTICATED))
return 0;
if ((priv->rtllib->state == RTLLIB_LINKED) &&
(priv->rtllib->CntAfterLink < 2))
return 0;
}
if (priv->bHwRadioOff == true) {
printk(KERN_INFO "================>%s(): hwradio off\n",
__func__);
return 0;
}
rtState = priv->rtllib->eRFPowerState;
if (!priv->up)
return -ENETDOWN;
if (priv->rtllib->LinkDetectInfo.bBusyTraffic == true)
return -EAGAIN;
if (wrqu->data.flags & IW_SCAN_THIS_ESSID) {
struct iw_scan_req *req = (struct iw_scan_req *)b;
if (req->essid_len) {
ieee->current_network.ssid_len = req->essid_len;
memcpy(ieee->current_network.ssid, req->essid,
req->essid_len);
}
}
down(&priv->wx_sem);
priv->rtllib->FirstIe_InScan = true;
if (priv->rtllib->state != RTLLIB_LINKED) {
if (priv->rtllib->PowerSaveControl.bInactivePs) {
if (rtState == eRfOff) {
if (priv->rtllib->RfOffReason >
RF_CHANGE_BY_IPS) {
RT_TRACE(COMP_ERR, "%s(): RF is "
"OFF.\n", __func__);
up(&priv->wx_sem);
return -1;
} else {
RT_TRACE(COMP_PS, "=========>%s(): "
"IPSLeave\n", __func__);
down(&priv->rtllib->ips_sem);
IPSLeave(dev);
up(&priv->rtllib->ips_sem);
}
}
}
rtllib_stop_scan(priv->rtllib);
if (priv->rtllib->LedControlHandler)
priv->rtllib->LedControlHandler(dev,
LED_CTL_SITE_SURVEY);
if (priv->rtllib->eRFPowerState != eRfOff) {
priv->rtllib->actscanning = true;
if (ieee->ScanOperationBackupHandler)
ieee->ScanOperationBackupHandler(ieee->dev,
SCAN_OPT_BACKUP);
rtllib_start_scan_syncro(priv->rtllib, 0);
if (ieee->ScanOperationBackupHandler)
ieee->ScanOperationBackupHandler(ieee->dev,
SCAN_OPT_RESTORE);
}
ret = 0;
} else {
priv->rtllib->actscanning = true;
ret = rtllib_wx_set_scan(priv->rtllib, a, wrqu, b);
}
up(&priv->wx_sem);
return ret;
}
void rtllib_wx_sync_scan_wq(void *data)
{
struct rtllib_device *ieee = container_of_work_rsl(data,
struct rtllib_device, wx_sync_scan_wq);
short chan;
enum ht_extchnl_offset chan_offset = 0;
enum ht_channel_width bandwidth = 0;
int b40M = 0;
if (!(ieee->softmac_features & IEEE_SOFTMAC_SCAN)) {
rtllib_start_scan_syncro(ieee, 0);
goto out;
}
chan = ieee->current_network.channel;
if (ieee->LeisurePSLeave)
ieee->LeisurePSLeave(ieee->dev);
/* notify AP to be in PS mode */
rtllib_sta_ps_send_null_frame(ieee, 1);
rtllib_sta_ps_send_null_frame(ieee, 1);
rtllib_stop_all_queues(ieee);
if (ieee->data_hard_stop)
ieee->data_hard_stop(ieee->dev);
rtllib_stop_send_beacons(ieee);
ieee->state = RTLLIB_LINKED_SCANNING;
ieee->link_change(ieee->dev);
/* wait for ps packet to be kicked out successfully */
msleep(50);
if (ieee->ScanOperationBackupHandler)
ieee->ScanOperationBackupHandler(ieee->dev, SCAN_OPT_BACKUP);
if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT &&
ieee->pHTInfo->bCurBW40MHz) {
b40M = 1;
chan_offset = ieee->pHTInfo->CurSTAExtChnlOffset;
bandwidth = (enum ht_channel_width)ieee->pHTInfo->bCurBW40MHz;
RT_TRACE(COMP_DBG, "Scan in 40M, force to 20M first:%d, %d\n",
chan_offset, bandwidth);
ieee->SetBWModeHandler(ieee->dev, HT_CHANNEL_WIDTH_20,
HT_EXTCHNL_OFFSET_NO_EXT);
}
rtllib_start_scan_syncro(ieee, 0);
if (b40M) {
RT_TRACE(COMP_DBG, "Scan in 20M, back to 40M\n");
if (chan_offset == HT_EXTCHNL_OFFSET_UPPER)
ieee->set_chan(ieee->dev, chan + 2);
else if (chan_offset == HT_EXTCHNL_OFFSET_LOWER)
ieee->set_chan(ieee->dev, chan - 2);
else
ieee->set_chan(ieee->dev, chan);
ieee->SetBWModeHandler(ieee->dev, bandwidth, chan_offset);
} else {
ieee->set_chan(ieee->dev, chan);
}
if (ieee->ScanOperationBackupHandler)
ieee->ScanOperationBackupHandler(ieee->dev, SCAN_OPT_RESTORE);
ieee->state = RTLLIB_LINKED;
ieee->link_change(ieee->dev);
/* Notify AP that I wake up again */
rtllib_sta_ps_send_null_frame(ieee, 0);
if (ieee->LinkDetectInfo.NumRecvBcnInPeriod == 0 ||
ieee->LinkDetectInfo.NumRecvDataInPeriod == 0) {
ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1;
ieee->LinkDetectInfo.NumRecvDataInPeriod = 1;
}
if (ieee->data_hard_resume)
ieee->data_hard_resume(ieee->dev);
if (ieee->iw_mode == IW_MODE_ADHOC || ieee->iw_mode == IW_MODE_MASTER)
rtllib_start_send_beacons(ieee);
rtllib_wake_all_queues(ieee);
out:
mutex_unlock(&ieee->wx_mutex);
}
