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path: root/drivers/net/wireless/libertas
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Diffstat (limited to 'drivers/net/wireless/libertas')
-rw-r--r--drivers/net/wireless/libertas/dev.h2
-rw-r--r--drivers/net/wireless/libertas/scan.c34
2 files changed, 27 insertions, 9 deletions
diff --git a/drivers/net/wireless/libertas/dev.h b/drivers/net/wireless/libertas/dev.h
index e8b9020f9bd..0dc4fc3b0b2 100644
--- a/drivers/net/wireless/libertas/dev.h
+++ b/drivers/net/wireless/libertas/dev.h
@@ -396,6 +396,8 @@ struct _wlan_adapter {
u32 radiomode;
u32 debugmode;
u8 fw_ready;
+
+ u8 last_scanned_channel;
};
#endif /* _WLAN_DEV_H_ */
diff --git a/drivers/net/wireless/libertas/scan.c b/drivers/net/wireless/libertas/scan.c
index 3c0b1a2a172..c9f573716f7 100644
--- a/drivers/net/wireless/libertas/scan.c
+++ b/drivers/net/wireless/libertas/scan.c
@@ -613,7 +613,8 @@ static int wlan_scan_channel_list(wlan_private * priv,
u8 filteredscan,
struct wlan_scan_cmd_config * pscancfgout,
struct mrvlietypes_chanlistparamset * pchantlvout,
- struct chanscanparamset * pscanchanlist)
+ struct chanscanparamset * pscanchanlist,
+ const struct wlan_ioctl_user_scan_cfg * puserscanin)
{
struct chanscanparamset *ptmpchan;
struct chanscanparamset *pstartchan;
@@ -621,6 +622,8 @@ static int wlan_scan_channel_list(wlan_private * priv,
int doneearly;
int tlvidx;
int ret = 0;
+ int scanned = 0;
+ union iwreq_data wrqu;
ENTER();
@@ -635,6 +638,9 @@ static int wlan_scan_channel_list(wlan_private * priv,
/* Set the temp channel struct pointer to the start of the desired list */
ptmpchan = pscanchanlist;
+ if (priv->adapter->last_scanned_channel && !puserscanin)
+ ptmpchan += priv->adapter->last_scanned_channel;
+
/* Loop through the desired channel list, sending a new firmware scan
* commands for each maxchanperscan channels (or for 1,6,11 individually
* if configured accordingly)
@@ -654,7 +660,7 @@ static int wlan_scan_channel_list(wlan_private * priv,
* - doneearly is set (controlling individual scanning of 1,6,11)
*/
while (tlvidx < maxchanperscan && ptmpchan->channumber
- && !doneearly) {
+ && !doneearly && scanned < 2) {
lbs_pr_debug(1,
"Scan: Chan(%3d), Radio(%d), mode(%d,%d), Dur(%d)\n",
@@ -701,6 +707,7 @@ static int wlan_scan_channel_list(wlan_private * priv,
/* Increment the tmp pointer to the next channel to be scanned */
ptmpchan++;
+ scanned++;
/* Stop the loop if the *next* channel is in the 1,6,11 set.
* This will cause it to be the only channel scanned on the next
@@ -716,8 +723,18 @@ static int wlan_scan_channel_list(wlan_private * priv,
/* Send the scan command to the firmware with the specified cfg */
ret = libertas_prepare_and_send_command(priv, cmd_802_11_scan, 0,
0, 0, pscancfgout);
+ if (scanned >= 2) {
+ priv->adapter->last_scanned_channel = ptmpchan->channumber;
+ return 0;
+ }
+
}
+ priv->adapter->last_scanned_channel = ptmpchan->channumber;
+
+ memset(&wrqu, 0, sizeof(union iwreq_data));
+ wireless_send_event(priv->wlan_dev.netdev, SIOCGIWSCAN, &wrqu, NULL);
+
LEAVE();
return ret;
}
@@ -775,6 +792,9 @@ int wlan_scan_networks(wlan_private * priv,
keeppreviousscan = puserscanin->keeppreviousscan;
}
+ if (adapter->last_scanned_channel)
+ keeppreviousscan = 1;
+
if (!keeppreviousscan) {
memset(adapter->scantable, 0x00,
sizeof(struct bss_descriptor) * MRVDRV_MAX_BSSID_LIST);
@@ -792,7 +812,8 @@ int wlan_scan_networks(wlan_private * priv,
filteredscan,
scan_cfg,
pchantlvout,
- scan_chan_list);
+ scan_chan_list,
+ puserscanin);
/* Process the resulting scan table:
* - Remove any bad ssids
@@ -1407,15 +1428,10 @@ int libertas_set_scan(struct net_device *dev, struct iw_request_info *info,
{
wlan_private *priv = dev->priv;
wlan_adapter *adapter = priv->adapter;
- union iwreq_data wrqu;
ENTER();
- if (!wlan_scan_networks(priv, NULL)) {
- memset(&wrqu, 0, sizeof(union iwreq_data));
- wireless_send_event(priv->wlan_dev.netdev, SIOCGIWSCAN, &wrqu,
- NULL);
- }
+ wlan_scan_networks(priv, NULL);
if (adapter->surpriseremoved)
return -1;