[ath9k-devel] How to lock AMPDU length at a specific value?

[Ali Abedi <a2abedi@uwaterloo.ca>]

These mostly determine the MAX AMPDU length. I also want to determine 
the minimum length, so
that I can set min=max and lock the AMPDU length.

Thank you,
Ali
On 21/01/2014 15:07, Kamran Nishat wrote:
> As far as i know AMPDU length is determined by 3 constraints. Firs 
> maximum AMPDU length. second blockAck window (if there were losses 
> then this will play a role).  Third is Max air time of the AMPDU which 
> is 4ms for some domain constraints. this comes into play MCS is low 
> and packet duration gets more than 4ms. See following function in 
> xmit.c for details
> ath_tx_form_aggr  <http://lxr.free-electrons.com/ident?i=ath_tx_form_aggr>  
>
>
> On Tue, Jan 21, 2014 at 11:49 PM, Ali Abedi <a2abedi@uwaterloo.ca 
> <mailto:a2abedi@uwaterloo.ca>> wrote:
>
>     Hello,
>
>     I have seen questions regarding the length of an AMPDU and how to
>     change
>     the maximum AMPDU length.
>     However, I require to lock the AMPDU length at a specific value.
>     Changing the max length does not guarantee
>     that all AMPDUs have a fixed length, it can be anything between 1
>     to max
>     based on the rate of arrival of new frames.
>     Is there a mechanism to force the card to wait to have enough
>     frames so
>     that all AMPDUs have a fixed length that we specify? In other words, I
>     need all AMPDUs to aggregate X full length frames.
>
>     Thank you,
>     Ali
>
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