[ath9k-devel] Weird error messages in logs

[Felix Fietkau <nbd@openwrt.org>]

On 2011-02-02 8:01 AM, Nikolay Martynov wrote:
> Hi,
> 
>   I've got a question for you, Ben, if you do not mind.
>   Can it get stuck without this error message?
> 
>   The reason I'm asking is that this pair (ath9k-intel5300) has
> connectivity problems which I was trying to debug with intel team and
> it seems that intel card stops receiving packets at some point and
> they are trying to locate an issue in there firmware.
>   But on the other hand can problem be in AP and - queue get stuck and
> that's the reason of client not receiving any packets.
In this case it definitely looks more like an AP problem. Are you sure
that it is running in legacy 802.11g mode? Because I don't see yet how
the AP could get into such a state without using A-MPDU and thus 802.11n.

The interesting part in the logs shows that more and more frames keep
getting added to the queue (so the mac80211 queue is active), but frames
do not make it to the hardware queue (axq_depth stays at 0)

The 'tx logic restart' part doesn't really do much except call the
function that creates and sends A-MPDU frames, so it's normal that it
cannot recover the connection by itself.

- Felix