mac80211: Fix queuing of scan containing a SSID

This patch fixes scanning for specific ssid's which is broken due to the
scan being queued up without respecting the ssid to scan for.

Signed-off-by: Helmut Schaa <hschaa@suse.de>
Signed-off-by: Jiri Benc <jbenc@suse.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 9 insertions, 1 deletions

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 4b4ed2a5803c..d575ccd67e91 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -241,6 +241,8 @@ struct ieee80211_if_sta {
         u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
         u8 ssid[IEEE80211_MAX_SSID_LEN];
         size_t ssid_len;
+        u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
+        size_t scan_ssid_len;
         u16 aid;
         u16 ap_capab, capab;
         u8 *extra_ie; /* to be added to the end of AssocReq */
diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/ieee80211_sta.c
index fda0e06453e8..fc6a3ff3d902 100644
--- a/net/mac80211/ieee80211_sta.c
+++ b/net/mac80211/ieee80211_sta.c
@@ -1998,7 +1998,10 @@ void ieee80211_sta_work(struct work_struct *work)
         if (ifsta->state != IEEE80211_AUTHENTICATE &&
             ifsta->state != IEEE80211_ASSOCIATE &&
             test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) {
-                ieee80211_sta_start_scan(dev, NULL, 0);
+                if (ifsta->scan_ssid_len)
+                        ieee80211_sta_start_scan(dev, ifsta->scan_ssid, ifsta->scan_ssid_len);
+                else
+                        ieee80211_sta_start_scan(dev, NULL, 0);
                 return;
         }
 
@@ -2868,6 +2871,9 @@ int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len)
                 return -EBUSY;
         }
 
+        ifsta->scan_ssid_len = ssid_len;
+        if (ssid_len)
+                memcpy(ifsta->scan_ssid, ssid, ssid_len);
         set_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request);
         queue_work(local->hw.workqueue, &ifsta->work);
         return 0;