2013-06-01 11:01:57

by Harvey Yang

Subject: BK, VI, VO tx queue stopped unexpectedly

Hi guys

I am writing a nl80211/cfg80211 driver for my wifi chip. I am testing my chip under the AP mode with hostapd. I use the kernel 3.0. I start the AP and check that all four tx queues are start, then I start a udp stream of BE from Ap to the station. After that I find other three tx queues stopped. I am sure that my driver dose not stop them. Is this a kernel machinesm ?

Thanks

2013-06-01 21:47:56

by Johannes Berg

Subject: Re: BK, VI, VO tx queue stopped unexpectedly

On Sat, 2013-06-01 at 19:01 +0800, Huawei Yang wrote:
> Hi guys
>
> I am writing a nl80211/cfg80211 driver for my wifi chip. I am testing
> my chip under the AP mode with hostapd. I use the kernel 3.0. I start
> the AP and check that all four tx queues are start, then I start a udp
> stream of BE from Ap to the station. After that I find other three tx
> queues stopped. I am sure that my driver dose not stop them. Is this a
> kernel machinesm ?

No mac80211? In that case, it has to be your driver ... if the queues
are really stopped. Or maybe you just leaked the frames and messed up
completely that way...

johannes