| 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 |
| |
| 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: Zefan Li <lizefan@huawei.com> |
| --- |
| net/mac80211/mlme.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/net/mac80211/mlme.c |
| +++ b/net/mac80211/mlme.c |
| @@ -2384,7 +2384,7 @@ 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; |
| |
| /* |
