> Don't know much about other AP software. But hostapd sends them > to check if a station is still in range and active. > > quote from hostapd.conf: > > # Station inactivity limit > # > # If a station does not send anything in ap_max_inactivity seconds, an > # empty data frame is sent to it in order to verify whether it is > # still in range. If this frame is not ACKed, the station will be > # disassociated and then deauthenticated. This feature is used to > # clear station table of old entries when the STAs move out of the > # range. i think also in this path in mac80211 sta_notify (driver call back) for AP mode ieee80211_sta_block_awake sta_unblock -> ieee80211_sta_ps_deliver_poll_response -> ieee80211_sta_ps_deliver_response -> ieee80211_send_null_response also in UAPSD path. i don't know much about the technical details -- thanks, shafi -- 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
