Re: Re: Warnings/errors in use with a QCA989x card

From: Matti Laakso <malaakso@elisanet.fi>
To: ath10k@lists.infradead.org
Cc: wingfeathera@gmail.com
Subject: Re: Re: Warnings/errors in use with a QCA989x card
Date: Mon, 22 Jun 2015 21:02:22 +0300	[thread overview]
Message-ID: <55884DAE.7070701@elisanet.fi> (raw)
In-Reply-To: <CA+BoTQnVin4Aj0MXhVwuX=nmHDsZo_xr-jF4zwLp+1-hExL2zQ@mail.gmail.com>

> On 5 June 2015 at 17:52, Ben Greear <greearb at candelatech.com <http://lists.infradead.org/mailman/listinfo/ath10k>> wrote:
> >/ On 06/04/2015 10:17 PM, Michal Kazior wrote:
> />>/ On 5 June 2015 at 03:52, Matthew Robbetts <wingfeathera at gmail.com <http://lists.infradead.org/mailman/listinfo/ath10k>> 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?
>
>
> Michał

I can confirm that with two week's use of 10.2.4.70-2 I've not seen
these problems any more. This is on OpenWrt with cherry picked patches
to enable FW API 5 (which I will post to OpenWrt mailing list shortly).

Matti

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