*/
int ave_beacon_signal;
+ /*
+ * Number of Beacon frames used in ave_beacon_signal. This can be used
+ * to avoid generating less reliable cqm events that would be based
+ * only on couple of received frames.
+ */
+ unsigned int count_beacon_signal;
+
/*
* Last Beacon frame signal strength average (ave_beacon_signal / 16)
* that triggered a cqm event. 0 indicates that no event has been
*/
#define IEEE80211_SIGNAL_AVE_WEIGHT 3
+/*
+ * How many Beacon frames need to have been used in average signal strength
+ * before starting to indicate signal change events.
+ */
+#define IEEE80211_SIGNAL_AVE_MIN_COUNT 4
+
#define TMR_RUNNING_TIMER 0
#define TMR_RUNNING_CHANSW 1
ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE;
ifmgd->ave_beacon_signal = rx_status->signal * 16;
ifmgd->last_cqm_event_signal = 0;
+ ifmgd->count_beacon_signal = 1;
} else {
ifmgd->ave_beacon_signal =
(IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 +
(16 - IEEE80211_SIGNAL_AVE_WEIGHT) *
ifmgd->ave_beacon_signal) / 16;
+ ifmgd->count_beacon_signal++;
}
if (bss_conf->cqm_rssi_thold &&
+ ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
int sig = ifmgd->ave_beacon_signal / 16;
int last_event = ifmgd->last_cqm_event_signal;