[ath9k-devel] sensitivity control for ath9k with mac80211

[Sergey Ryazanov <ryazanov.s.a@gmail.com>]

2013/7/19 Felix Fietkau <nbd@openwrt.org>:
> On 2013-07-19 4:58 PM, Sergey Ryazanov wrote:
>> 2013/7/19 Ben Greear <greearb@candelatech.com>:
>>> On 07/19/2013 06:36 AM, Flavio Leonel wrote:
>>>> Ok i know that but the command iw not permited set sensitivity limit
>>>>
>>>> how i can seting this limit on atth9k , this question..
>>>
>>> I tried messing with this some months ago and got nowhere.  I could
>>> not figure any way to make the NIC ignore fainter signals, and I am
>>> not sure it is possible to make the hardware do this...
>>>
>>
>> At least 5k chips have a special register for CCA threshold
>> configuration. Modern 9k chips have not inherited this register?
> The CCA threshold is not the same as the threshold for signal detection.
> In many ways, 5k and 9k cards have a somewhat similar set of registers
> to configure various aspects of detection sensitivity. Some of those are
> set in the initvals, some are controlled by ANI.
> The main issue is that the driver does not expose any convenient knobs
> to control this.
>
Yeah. It would be useful for developers to get delicate and operative
control over Tx/Rx process (at least via debugfs). But I never faced
with situations where this would be useful for end user. So, IMHO,
even if somebody submit appropriate patches, they will not be
accepted.

-- 
BR,
Sergey