Implement the required support for extrace the cipher
suite settings from the the RS Information Element and
set the station key based on the 802.11 Station Key
CAPWAP message element.
Group Key update handling is currently not implemented nor is
Station Key update handling.
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.
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.