Re: QCA9984 all devices being de-authenticated and unable to re-connect

[Ben Greear <greearb@candelatech.com>]

Hello,

You could try using the ath10k-ct firmware that does NOT work for you (18.06.2) in
the latest snapshot.  If problem still happens, then it is firmware related,
and I can then build you a series of images so you can do a bisect to find what
commit fixes the issue if you really want to know what is the fix.

Otherwise, maybe something else fixed the problem.  For what it is worth, we
have regularly done 64+ stations connected to our ath10k firmware/driver
for years.

Thanks,
Ben

On 03/29/2019 07:02 PM, Carlito Nueno wrote:
> Hi all,
>
> I am using:
>
> ath10k-firmware-qca9984 - 2018-12-16-211de167-1
> kmod-ath10k - 4.14.109+4.19.23-1-5
>
> ## Problem
> I am able to associate and authenticate many clients. Max I tested was
> 15 clients.
> But when more than 4 clients start to play video stream (youtube,
> twitch, netflix):
>
> 1. all the clients loose internet connectivity
> 2. all of them are _de-authenticated_
>
> 3. when trying to reconnect, they connect but are _disassociated_ immediately.
>
> c2:44:2f:f3:3c:22  -64 dBm / -109 dBm (SNR 45)  40 ms ago
>     RX: 200.0 MBit/s, VHT-MCS 9, 40MHz, VHT-NSS 1        48 Pkts.
>     TX: 12.0 MBit/s                                    9 Pkts.
>     expected throughput: unknown
>
> c2:44:2f:f3:3c:22  -57 dBm / -109 dBm (SNR 52)  10 ms ago
>     RX: 12.0 MBit/s                                   17 Pkts.
>     TX: 12.0 MBit/s                                    5 Pkts.
>     expected throughput: unknown
>
> 4. internet on the AP works. (I am able to ping google.com)
>
> ## Firmware and OS this problem occurs
> - ath10k + 18.06.2 = yes, there is this problem
> - ath10k + snapshot = yes, there is this problem
> - ath10k-ct + 18.06.2 = yes, similar problem occurs
> (https://github.com/greearb/ath10k-ct/issues/82)
> - ath10k-ct + snapshot = no, works fine
>
> ## OpenWRT info
>
> ### Release
> DISTRIB_ID='OpenWrt'
> DISTRIB_RELEASE='SNAPSHOT'
> DISTRIB_REVISION='r9753-6df5ab89cf'
> DISTRIB_TARGET='ar71xx/generic'
> DISTRIB_ARCH='mips_24kc'
> DISTRIB_DESCRIPTION='OpenWrt SNAPSHOT r9753-6df5ab89cf'
> DISTRIB_TAINTS='no-all'
>
> ### Logs
> Include:
> - Full list of OPKGs installed: 2_opkg_installed-txt
> - Logs up to the point of crash: 3_ath10k_crash-txt
> - Logs after the crash and trying to reconnect: 4_after_crash_reconnect-txt
>
> https://gist.github.com/ironpillow/96ce9173721163a8c8c93113b2a677d7
>
> ### More logs
> I noticed that the some devices stay connected :man_shrugging: and
> when these connected devices make a dns request, the request is
> reaching the DNS server but the AP is not receiving response.
>
> I ran ping on *one device* and captured packets on AP (two interfaces):
> - tcpdump -i wlan0-ap
> - tcpdump -i br-lan
>
> ping google.com:
> https://gist.github.com/ironpillow/50cb0e2010ac5bc9acc7abc7e20ab910
> ping 8.8.8.8: https://gist.github.com/ironpillow/97cb3dd6eb8e9d028a8231f142fae01f
>
> Packets are not reaching wifi wlan0-ap interface.
>
> I am happy to run more tests.
>
> Any advice?
>
> _______________________________________________
> ath10k mailing list
> ath10k@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/ath10k
>

-- 
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc  http://www.candelatech.com

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