cfg80211: send scan results from work queue

[platform/adaptation/renesas_rcar/renesas_kernel.git] / net / wireless / scan.c

diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index b528e31..d1ed4ae 100644 (file)
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -161,18 +161,25 @@ static void __cfg80211_bss_expire(struct cfg80211_registered_device *dev,
                dev->bss_generation++;
 }
 
-void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev)
+void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev,
+                          bool send_message)
 {
        struct cfg80211_scan_request *request;
        struct wireless_dev *wdev;
+       struct sk_buff *msg;
 #ifdef CONFIG_CFG80211_WEXT
        union iwreq_data wrqu;
 #endif
 
        ASSERT_RTNL();
 
-       request = rdev->scan_req;
+       if (rdev->scan_msg) {
+               nl80211_send_scan_result(rdev, rdev->scan_msg);
+               rdev->scan_msg = NULL;
+               return;
+       }
 
+       request = rdev->scan_req;
        if (!request)
                return;
 
@@ -186,18 +193,16 @@ void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev)
        if (wdev->netdev)
                cfg80211_sme_scan_done(wdev->netdev);
 
-       if (request->aborted) {
-               nl80211_send_scan_aborted(rdev, wdev);
-       } else {
-               if (request->flags & NL80211_SCAN_FLAG_FLUSH) {
-                       /* flush entries from previous scans */
-                       spin_lock_bh(&rdev->bss_lock);
-                       __cfg80211_bss_expire(rdev, request->scan_start);
-                       spin_unlock_bh(&rdev->bss_lock);
-               }
-               nl80211_send_scan_done(rdev, wdev);
+       if (!request->aborted &&
+           request->flags & NL80211_SCAN_FLAG_FLUSH) {
+               /* flush entries from previous scans */
+               spin_lock_bh(&rdev->bss_lock);
+               __cfg80211_bss_expire(rdev, request->scan_start);
+               spin_unlock_bh(&rdev->bss_lock);
        }
 
+       msg = nl80211_build_scan_msg(rdev, wdev, request->aborted);
+
 #ifdef CONFIG_CFG80211_WEXT
        if (wdev->netdev && !request->aborted) {
                memset(&wrqu, 0, sizeof(wrqu));
@@ -211,6 +216,11 @@ void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev)
 
        rdev->scan_req = NULL;
        kfree(request);
+
+       if (!send_message)
+               rdev->scan_msg = msg;
+       else
+               nl80211_send_scan_result(rdev, msg);
 }
 
 void __cfg80211_scan_done(struct work_struct *wk)
@@ -221,7 +231,7 @@ void __cfg80211_scan_done(struct work_struct *wk)
                            scan_done_wk);
 
        rtnl_lock();
-       ___cfg80211_scan_done(rdev);
+       ___cfg80211_scan_done(rdev, true);
        rtnl_unlock();
 }
 
@@ -1079,7 +1089,7 @@ int cfg80211_wext_siwscan(struct net_device *dev,
        if (IS_ERR(rdev))
                return PTR_ERR(rdev);
 
-       if (rdev->scan_req) {
+       if (rdev->scan_req || rdev->scan_msg) {
                err = -EBUSY;
                goto out;
        }
@@ -1481,7 +1491,7 @@ int cfg80211_wext_giwscan(struct net_device *dev,
        if (IS_ERR(rdev))
                return PTR_ERR(rdev);
 
-       if (rdev->scan_req)
+       if (rdev->scan_req || rdev->scan_msg)
                return -EAGAIN;
 
        res = ieee80211_scan_results(rdev, info, extra, data->length);