> In AP mode DFS channel state is changed to DFS_AVAILABLE
> after successful CAC and remains as such until a radar
> signal is detected during the In-Service Monitoring.
> When AP is stopped it is no longer monitoring current channel
> for radar signals. DFS channel state should be changed
> to DFS_USABLE when last AP interface is stopped. Starting AP
> again on that channel will start CAC instead of starting radiation.
>
Sorry for answering after so many revisions, but ... why do you think this is
required? Many APs first do a CAC on all available channels, but then pick one
channel and use that, while being able to switch to another channel
immediately.
WIth this patch (if I understand that correctly), this is not possible
anymore. Why do you think it is required? I can not find this requirement in
ETSI, at least.
To quote from ETSI 301.893:
Once the RLAN has started operations on an Available Channel, then that
channel becomes an Operating Channel. During normal operation, the master
device shall monitor all Operating Channels (In-Service Monitoring) to ensure
that there is no radar operating within these channel(s). If no radar was
detected on an Operating Channel but the RLAN stops operating on that channel,
then the channel becomes an Available Channel.
I think this patch is wrong and should not be applied.
Thanks,
Simon
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