On Fri, 2010-09-17 at 20:01 -0700, Paul Stewart wrote: > I found a small bit of behavior related in some vague way to > connection monitoring: During the scan-completed notification > (ieee80211_mlme_notify_scan_completed) we call > ieee80211_restart_sta_timer() on all our interfaces, which in turn > queues up the &ifmgd->monitor_work, which does a probe request of our > AP. Why should we do a probe request of your associated AP every time > a scan completes? Wouldn't the other active monitoring schemes (like > beacon loss) be sufficient for a "scan finished" condition? One reason I can think of is to quickly determine whether your AP is still around and active given that you may have just been off-channel for a significant period of time. Not all drivers background scan yet. But with any sane driver, you'd have already sent your "no longer in powersave mode" NULL packet to the AP right after finishing the scan, so perhaps the probe is redundant. Dan -- 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
