Michael Buesch <mb@xxxxxxxxx> writes: >> NetworkManager typically scans every 120 seconds and I can also trigger >> the messages by a manual scan with iwlist. I did not dig any further but >> the messages seem to appear right at the end of the scan. Tried with iwlagn >> and both sw_scan and hw_scan. > > Yeah OK. While scanning it's expected to lose some frames. > > However, the driver should probably protect against this by using the > scan notification callbacks. It could disable beacon-loss reporting > while scanning. That case is already covered. In sw_scan mac80211 will disable power save and hence beacon filter is also disabled. With hw_scan the firmware should be clever enough to not emit beacon loss events when scanning. But ath9k nor iwlwifi don't support beacon filtering and this is a problem in mac80211. We need to disable the beacon loss check in mac80211, most probably by stopping the associated timer whenever scanning. -- Kalle Valo -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
