From: Jouni Malinen Date: Fri, 27 Aug 2010 19:21:13 +0000 (+0300) Subject: mac80211: Fix signal strength average initialization for CQM events X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=3ba06c6fbd651ed3377e584026d1c112b492cc8b;p=openwrt%2Fstaging%2Fblogic.git mac80211: Fix signal strength average initialization for CQM events The ave_beacon_signal value uses 1/16 dB unit and as such, must be initialized with the signal level of the first Beacon frame multiplied by 16. This fixes an issue where the initial CQM events are reported incorrectly with a burst of events while the running average approaches the correct value after the incorrect initialization. This could cause user space -based roaming decision process to get quite confused at the moment when we would like to go through authentication and DHCP. Cc: stable@kernel.org Signed-off-by: Jouni Malinen Signed-off-by: John W. Linville --- diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index c8694478cde2..7915726d791e 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -1553,7 +1553,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, ifmgd->last_beacon_signal = rx_status->signal; if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) { ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE; - ifmgd->ave_beacon_signal = rx_status->signal; + ifmgd->ave_beacon_signal = rx_status->signal * 16; ifmgd->last_cqm_event_signal = 0; } else { ifmgd->ave_beacon_signal =