Warnings/errors in use with a QCA989x card

[Matthew Robbetts]

Hi Michał,

> On Jun 8, 2015, at 00:18, Michal Kazior <michal.kazior at tieto.com> wrote:
> 
> On 5 June 2015 at 17:52, Ben Greear <greearb at candelatech.com> wrote:
>> On 06/04/2015 10:17 PM, Michal Kazior wrote:
>>> On 5 June 2015 at 03:52, Matthew Robbetts <wingfeathera at gmail.com> wrote:
>> 
>>>> [Thu Jun  4 11:07:08 2015] ath10k_pci 0000:02:00.0: SWBA overrun on vdev 0, skipped old beacon
>>>> [Thu Jun  4 11:07:08 2015] ath10k_pci 0000:02:00.0: SWBA overrun on vdev 0, skipped old beacon
>>>> [Thu Jun  4 11:07:08 2015] ath10k_pci 0000:02:00.0: SWBA overrun on vdev 0, skipped old beacon
>>>> [Thu Jun  4 11:07:08 2015] ath10k_pci 0000:02:00.0: SWBA overrun on vdev 0, skipped old beacon
>>>> [Thu Jun  4 11:07:08 2015] ath10k_pci 0000:02:00.0: SWBA overrun on vdev 0, skipped old beacon
>>>> [Thu Jun  4 11:07:08 2015] ath10k_pci 0000:02:00.0: SWBA overrun on vdev 0, skipped old beacon
>>>> [Thu Jun  4 11:07:09 2015] ath10k_pci 0000:02:00.0: SWBA overrun on vdev 0, skipped old beacon
>>>> [Thu Jun  4 11:07:09 2015] ath10k_pci 0000:02:00.0: SWBA overrun on vdev 0, skipped old beacon
>>>> [Thu Jun  4 11:07:09 2015] ath10k_pci 0000:02:00.0: SWBA overrun on vdev 0, skipped old beacon
>>>> [Thu Jun  4 11:07:09 2015] ath10k_pci 0000:02:00.0: failed to transmit management frame via WMI: -11
>>>> [Thu Jun  4 12:05:32 2015] ath10k_warn: 19 callbacks suppressed
>>>> [Thu Jun  4 12:05:32 2015] ath10k_pci 0000:02:00.0: Spurious quick kickout for STA 04:db:56:e1:65:2f
>>>> [Thu Jun  4 12:55:54 2015] device wlp2s0 left promiscuous mode
>>> 
>>> This is the dreaded tx credit starvation.
>> 
>> I have some fixes and work-arounds related to this issue in my kernels and CT firmware.
>> 
>> Possibly it would work better for you:
>> 
>> http://www.candelatech.com/ath10k.php
>> 
>> The beta-14 firmware is probably best at this point..I'll promote it to official
>> release soon.
>> 
>>> In some cases if disassoc+deauth is sent and target station is asleep
>>> and unresponsive it'll cause firmware to stall causing ath10k timeouts
>>> during sta_state station removal. Due to insufficient credits beacons
>>> can't be sent for ~10 seconds, sta_state station removal fails causing
>>> mac80211 call trace splat and later spurious kickout events because
>>> peer was never removed from firmware.
>>> 
>>> There's no easy/sane fix for that, yet.
>> 
>> I thought the newer upstream firmware had
>> support for mgt frames over normal packet transport instead of over
>> the WMI management interface?  Wouldn't that fix things?
> 
> I believe this was/is supposed to be available in some recent 10.2.4
> builds. I think 10.2.4.48 was first supposed to support it but I see
> the available "stable" fw api blob still advertises has-wmi-mgmt-tx.
> The 10.2.4.48-2 from untested/ on the other hand doesn't advertise the
> bit so I guess it uses the HTT path for management frames which should
> prevent the tx credit starvation problem.
> 
> @Matthew: Can you try running 10.2.4.48-2 from 10.2.4/untested/ @
> github.com/kvalo/ath10k-firmware and see if it helps you, please?

Argh! I managed to entirely miss this last statement in your email! I will absolutely try this, immediately.

Out of interest, should I skip straight to 10.2.4.70-2 or might this be specific to .48-2?

Thanks so much!
Matt