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Re: [PATCH v2 3/3] mac80211: don't defer scans in case of radar detection

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On Sun, Feb 8, 2015 at 3:17 PM, Janusz Dziedzic
<janusz.dziedzic@xxxxxxxxx> wrote:
> On 8 February 2015 at 11:57, Eliad Peller <eliad@xxxxxxxxxx> wrote:
>> On Sat, Feb 7, 2015 at 9:17 PM, Janusz Dziedzic
>> <janusz.dziedzic@xxxxxxxxx> wrote:
>>> BTW, what in case we will start AP on first interface (DFS channel),
>>> on second one we will try to connect to other AP. As I understand this
>>> correctly, second iface (STA iface) will not allow to scan (connect)
>>> ...?
>>>
>> right.
>> The rationale behind it that you must listen constantly to detect
>> radar events, which prevents scanning off-channel.
>> (i guess an exception for on-channel scanning can be added if needed, though)
>>
> Still I can image hw with hw_scan() support that could have dedicated
> "hw part" for scanning.
> So, driver should made this decision (allow or not) base on hw features.
>
this will probably require additional radio...

anyway, i don't have any objection here :)
just explained the original logic (and my patch only changed the
behavior from blocking indefinitely to returning error immediately)

Eliad.
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