Patch "mac80211: fix driver RSSI event calculations" has been added to the 4.3-stable tree

Patch "mac80211: fix driver RSSI event calculations" has been added to the 4.3-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    mac80211: fix driver RSSI event calculations

to the 4.3-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     mac80211-fix-driver-rssi-event-calculations.patch
and it can be found in the queue-4.3 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 8ec6d97871f37e4743678ea4a455bd59580aa0f4 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Fri, 28 Aug 2015 10:52:53 +0200
Subject: mac80211: fix driver RSSI event calculations

From: Johannes Berg <johannes.berg@intel.com>

commit 8ec6d97871f37e4743678ea4a455bd59580aa0f4 upstream.

The ifmgd->ave_beacon_signal value cannot be taken as is for
comparisons, it must be divided by since it's represented
like that for better accuracy of the EWMA calculations. This
would lead to invalid driver RSSI events. Fix the used value.

Fixes: 615f7b9bb1f8 ("mac80211: add driver RSSI threshold events")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/mac80211/mlme.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -3391,7 +3391,7 @@ static void ieee80211_rx_mgmt_beacon(str
 
 	if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
 	    ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
-		int sig = ifmgd->ave_beacon_signal;
+		int sig = ifmgd->ave_beacon_signal / 16;
 		int last_sig = ifmgd->last_ave_beacon_signal;
 		struct ieee80211_event event = {
 			.type = RSSI_EVENT,


Patches currently in stable-queue which might be from johannes.berg@intel.com are

queue-4.3/mac80211-fix-local-deauth-while-associating.patch
queue-4.3/nl80211-fix-potential-memory-leak-from-parse_acl_data.patch
queue-4.3/mac80211-fix-divide-by-zero-when-noa-update.patch
queue-4.3/mac80211-allow-null-chandef-in-tracing.patch
queue-4.3/mac80211-fix-driver-rssi-event-calculations.patch