ath10k tx to a Macbook Pro stalls

[Michal Kazior]

On 22 July 2014 06:12, Andy Lutomirski <luto at amacapital.net> wrote:
> On Mon, Jul 21, 2014 at 11:31 AM, Kalle Valo <kvalo at qca.qualcomm.com> wrote:
>> Andy Lutomirski <luto at amacapital.net> writes:
>>
>>> On my Archer C7 v2, as soon as the MBP tries to do something like
>>> playing a video, it seems like frames *to* the MBP no longer get
>>> there.  At the very least, arp replies don't get there.
>>
>> A multicast problem? Can you run for example 'arping -b <macbook's ip>'
>> to check if multicast stops working at some point? What if you hardcode
>> the ARP address, do unicast packets go to the macbook still?
>
> It's a unicast problem, actually.  arping -b works.  arping w/o -b
> gets one reply.
>
> arp -s <IP> ff:ff:ff:ff:ff:ff allows me to ping the MBP (with
> moderately high loss).  (I'm actually a bit surprised that Linux is
> okay with that.)
>
> Does this mean that the MBP is failing to notice TIM entries, or that
> ath10k somehow stops buffering packets to power-saving stations?

Do you have u-APSD enabled in your OpenWRT configuration by any chance?


Michał