After the max station inactivity has expired, a probe request
(a data null frame) is sent to the station. It the station does
not ACK this frame, it is removed from the WTP.
Note: inactivity timeout is not the same as the CAPWAP Idle Timeout.
The CAPWAP Idle Timeout would remove a station due to inactivity
even when it is still reachable from the WTP. In contrast, the
inactivity timeout probes whether the station is still present
and only removes it when not.
Replace capwap_printf_macaddress with MACSTR and MAC2STR
macro for all EUI48 MAC addresses. Save a text buffer in
the station structure and some buffers in functions.
The AC is supposed to react to WiFi Authorization requests
with Add Station messages. Such an Add Station will fail
with the station is already present in the data path.
A Authorization request for a station that the WTP already
in authorized state means that the station lost its assoziation
without the WTP detecting that. So, clearing it from the data
path seems to be appropriate.
Add suport to enable 80211n support on the BSS and set
station parameters through the "Add Station" procedure.
Setting 802.11n radio parameters is rudementary and does
not work yet.
Hard coding basic rates is wrong. Each Wifi types does expect
some default basic rates. However those rates are not set in
stone and the AC is permited to set then to whatever it deems
ok. This might prevent client from connecting, but it still is
the AC decission to do so.
This is first step towards a more flexible basic rate handling.
The director has the opportunity to change the configuration of AC in join
connection. The virtual interfaces which encapsulate the wifi stations is
managed dynamically by the Director.
The AC must request authorization from Director for associate a station.
