mac80211: fix scan completed tracing

[cascardo/linux.git] / net / mac80211 / scan.c

diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index f9648ef..23d8ac8 100644 (file)
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -7,6 +7,7 @@
  * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
  * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
  * Copyright 2013-2015  Intel Mobile Communications GmbH
+ * Copyright 2016  Intel Deutschland GmbH
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -70,6 +71,7 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
                .boottime_ns = rx_status->boottime_ns,
        };
        bool signal_valid;
+       struct ieee80211_sub_if_data *scan_sdata;
 
        if (ieee80211_hw_check(&local->hw, SIGNAL_DBM))
                bss_meta.signal = rx_status->signal * 100;
@@ -83,6 +85,20 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
                bss_meta.scan_width = NL80211_BSS_CHAN_WIDTH_10;
 
        bss_meta.chan = channel;
+
+       rcu_read_lock();
+       scan_sdata = rcu_dereference(local->scan_sdata);
+       if (scan_sdata && scan_sdata->vif.type == NL80211_IFTYPE_STATION &&
+           scan_sdata->vif.bss_conf.assoc &&
+           ieee80211_have_rx_timestamp(rx_status)) {
+               bss_meta.parent_tsf =
+                       ieee80211_calculate_rx_timestamp(local, rx_status,
+                                                        len + FCS_LEN, 24);
+               ether_addr_copy(bss_meta.parent_bssid,
+                               scan_sdata->vif.bss_conf.bssid);
+       }
+       rcu_read_unlock();
+
        cbss = cfg80211_inform_bss_frame_data(local->hw.wiphy, &bss_meta,
                                              mgmt, len, GFP_ATOMIC);
        if (!cbss)
@@ -345,6 +361,12 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
 
                if (rc == 0)
                        return;
+
+               /* HW scan failed and is going to be reported as aborted,
+                * so clear old scan info.
+                */
+               memset(&local->scan_info, 0, sizeof(local->scan_info));
+               aborted = true;
        }
 
        kfree(local->hw_scan_req);
@@ -353,8 +375,10 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
        scan_req = rcu_dereference_protected(local->scan_req,
                                             lockdep_is_held(&local->mtx));
 
-       if (scan_req != local->int_scan_req)
-               cfg80211_scan_done(scan_req, aborted);
+       if (scan_req != local->int_scan_req) {
+               local->scan_info.aborted = aborted;
+               cfg80211_scan_done(scan_req, &local->scan_info);
+       }
        RCU_INIT_POINTER(local->scan_req, NULL);
 
        scan_sdata = rcu_dereference_protected(local->scan_sdata,
@@ -391,15 +415,19 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
                ieee80211_start_next_roc(local);
 }
 
-void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
+void ieee80211_scan_completed(struct ieee80211_hw *hw,
+                             struct cfg80211_scan_info *info)
 {
        struct ieee80211_local *local = hw_to_local(hw);
 
-       trace_api_scan_completed(local, aborted);
+       trace_api_scan_completed(local, info->aborted);
 
        set_bit(SCAN_COMPLETED, &local->scanning);
-       if (aborted)
+       if (info->aborted)
                set_bit(SCAN_ABORTED, &local->scanning);
+
+       memcpy(&local->scan_info, info, sizeof(*info));
+
        ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
 }
 EXPORT_SYMBOL(ieee80211_scan_completed);
@@ -566,6 +594,9 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
                local->hw_scan_req->req.ie = ies;
                local->hw_scan_req->req.flags = req->flags;
                eth_broadcast_addr(local->hw_scan_req->req.bssid);
+               local->hw_scan_req->req.duration = req->duration;
+               local->hw_scan_req->req.duration_mandatory =
+                       req->duration_mandatory;
 
                local->hw_scan_band = 0;
 
@@ -1073,6 +1104,7 @@ void ieee80211_scan_cancel(struct ieee80211_local *local)
         */
        cancel_delayed_work(&local->scan_work);
        /* and clean up */
+       memset(&local->scan_info, 0, sizeof(local->scan_info));
        __ieee80211_scan_completed(&local->hw, true);
 out:
        mutex_unlock(&local->mtx);