[ath9k-devel] SW queuing stopped during transmissions

[ath9k-devel] SW queuing stopped during transmissions

[shinnazar]

Hi all,

I want to keep the TX software queue always filled with frames. 

But, according to my observations mac80211 stops queuing frames into SW
queue during the transmission. 

However I couldn't find the point where should I dig in order to manipulate
the SW queuing for my purpose. 

Any ideas?   

 

 

Warm regards,

Shinnazar.

 

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[ath9k-devel] SW queuing stopped during transmissions

[shinnazar]

More details on these,

ieee80211_subif_start_xmit() function isn't receiving any frame from kernel
while the transmission is going on. This continues until block ack will be
received i.e., until ATH9K_INT_TX interrupt will be released. Because of
this, SW queue sometimes cannot provide the HW queue with necessary number
of frames.  I didn't understand what was the logic behind such a method for
implementation, but this feature causes significant performance degradation
under usual channel conditions.

 

From: shinnazar [mailto:seytnazarovsho at ynu.ac.kr] 
Sent: Friday, July 19, 2013 3:59 PM
To: ath9k-devel at lists.ath9k.org
Subject: [ath9k-devel] SW queuing stopped during transmissions

 

Hi all,

I want to keep the TX software queue always filled with frames. 

But, according to my observations mac80211 stops queuing frames into SW
queue during the transmission. 

However I couldn't find the point where should I dig in order to manipulate
the SW queuing for my purpose. 

Any ideas?   

 

 

Warm regards,

Shinnazar.

 

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