[ATH9K_HTC] Debug files

Oleksij Rempel linux at rempel-privat.de
Sun Jul 28 10:25:03 EDT 2013


Am 28.07.2013 16:07, schrieb Matteo:
> Thanks a lot for the quick answer.
>
> Now I have another doubt, What does it mean "not filtered"?
>
> However, If I wish to know the global number retransmission in a finite interval, could I extract long retries plus no filtered ?

In most cases you should compare ath9k with ath9k-htc. It is same 
hardware, with only one difference some parts are done insight of firmware.

>
>
> Thanks a lot.
> Matteo
> On Jul 28, 2013, at 3:19 AM, Sujith Manoharan <sujith at msujith.org> wrote:
>
>> Matteo wrote:
>>> I understood that the value Xretries stays for the number of packets have
>>> exceed the threshold of the number of attempts , short retry is the number of
>>> RTS resent and long retry is the number of generic frame resent.
>>>
>>> In pathDebug/statistics/ there is retry_count , even in
>>> netdev:wlanx/stations/MACADDRESS/tx_retry_count and the value is always zero.
>>>
>>> So, as you might think, the tx_retry_count and/or retry_count are equal to
>>> long retries value , aren't?
>>
>> The values in tgt_tx_stats are at the hardware level. It is not maintained
>> as per-station information, but globally, for all frames.
>>
>> xretries     - This is a flag that is set for each frame if transmission failed.
>> shortretries - This is a counter that holds the number of times RTS/CTS
>>                exchange failed for a frame.
>> longretries  - This is a counter that holds the number of times a frame
>>                was transmitted without being acknowledged.
>>
>> When TX completion is processed for every frame, these data are gathered
>> and stored in a global statistics structure, which is given to the host.
>>
>> mac80211's tx_retry_count is per-station and it represents "not acked and
>> not filtered".
>>
>> Sujith
>
>
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-- 
Regards,
Oleksij



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