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Re: [RFC] mac80211: fix release_reorder_timeout in scan

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I would not send voice data under a BA agreement.  If you have to give up on transmitting a frame, it will leave a hole at the receiver which will then require a BAR to move past.  Since you will typically only send one frame at a time, it (use of A-MPDU aggregation) doesn't buy you anything.  IIRC, there are industry certification tests that send more than one frame a second at AC_VO, however, which one needs to to pass.

Matt

On Sep 27, 2010, at 12:12 PM, Luis R. Rodriguez wrote:

> On Mon, Sep 27, 2010 at 12:10 PM, Johannes Berg
> <johannes@xxxxxxxxxxxxxxxx> wrote:
>> On Mon, 2010-09-27 at 12:09 -0700, Luis R. Rodriguez wrote:
>>> On Mon, Sep 27, 2010 at 12:06 PM, Johannes Berg
>>> <johannes@xxxxxxxxxxxxxxxx> wrote:
>>>> On Mon, 2010-09-27 at 12:03 -0700, Luis R. Rodriguez wrote:
>>>> 
>>>>>> We put them into the reorder buffer, but if we get a reorder timeout
>>>>>> while scanning we'll drop the frames which isn't necessary.
>>>>> 
>>>>> Ah, got it, thanks, good catch. Guess its not a terrible stable fix,
>>>>> but at least important for those who care about VoIP and such.
>>>> 
>>>> You wouldn't typically use aggregation on VO traffic, I think?
>>> 
>>> ath9k uses aggregation for all data traffic.
>> 
>> But it can only control TX :)
> 
> True
> 
>> Which is, of course, relevant if it's used
>> as an AP,
> 
> True
> 
>> but for typical VO traffic I would argue that using
>> aggregation is a bug since it'll just increase delays & jitter.
> 
> This deviates from subject a little but while at it, I am curious,
> Matt, Srini, what do you think?
> 
>  Luis

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