wcn6855 2.1 - slow download speed on any pairwise cipher except CCMP

[Yaroslav Isakov]

Hello!

вт, 4 июн. 2024 г. в 03:55, Baochen Qiang <quic_bqiang at quicinc.com>:
>
>
>
> On 6/4/2024 5:29 AM, Yaroslav Isakov wrote:
> > Hello! Thank you for patch! I tried to apply this patch on top of 6.9.3,
> > but it failed to apply - what kernel version should I use, to test it?
> >
> That patch is based on ath-202405301555 tag of Kalle's ath.git:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git/
>
> but I suppose it could also be applied cleanly on ToT of ath.git.
Actually, it seems that when I was copying patch from patchwork,
something went wrong. I properly downloaded it, and it applied (with
few hunks) on top of 6.9.3. After rebuilding currently running kernel,
and reloading driver - GCMP-256 finally started showing same speeds on
download as on upload! Looks like the issue is fixed, thank you a lot!
>
>
> > On Fri, 31 May 2024, 04:18 Baochen Qiang, <quic_bqiang at quicinc.com> wrote:
> >
> >>
> >>
> >> On 4/15/2024 7:26 PM, Yaroslav Isakov wrote:
> >>> Hello!
> >>>
> >>> вс, 14 апр. 2024 г. в 10:12, Yaroslav Isakov <yaroslav.isakov at gmail.com
> >>> :
> >>>>
> >>>> Hello!
> >>>>
> >>>> вт, 2 апр. 2024 г. в 02:35, Baochen Qiang <quic_bqiang at quicinc.com>:
> >>>>>
> >>>>>
> >>>>>
> >>>>> On 4/1/2024 10:53 PM, Jeff Johnson wrote:
> >>>>>> On 3/31/2024 8:49 AM, Yaroslav Isakov wrote:
> >>>>>>> Hello! When I tried to switch my OpenWRT router from default CCMP
> >>>>>>> pairwise cipher to any other, supported by both my router (Asus
> >>>>>>> TUF-AX6000) and my laptop (Thinkpat T14 Gen 4 AMD with WCN6855 2.1),
> >> I
> >>>>>>> saw that download dropped from 1Gbit/s to 100 MBit/s. When I changed
> >>>>>>> back to CCMP, download speed recovered back to 1Gbit/s. Upload speed
> >>>>>>> is good, though, for all ciphers - 1Gbit/s.
> >>>>>>>
> >>>>>>> Initially, I thought, that issue with either router hardware, or
> >>>>>>> openwrt driver - but, I tested the same settings on another laptop -
> >>>>>>> T14 Gen3 Intel - and with Intel WIFI, both download and upload speed
> >>>>>>> was 1Gbit/s on any pairwise cipher.
> >>>>>>>
> >>>>>>> This issue is 100% reproducible for me, it happens all the times I'm
> >>>>>>> switching to any pairwise cipher other than CCMP.
> >>>>>>>
> >>>>>>> I'm on Linux 6.7.6, compiled from sources on Gentoo.
> >>>>> I'm not familiar with Gentoo, is there any private changes in it
> >>>>> compared to upstream ath11k? If there indeed is, could you try Kalle's
> >>>>> ath11k tree?
> >>>>>
> >>>>> https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git/
> >>>>>
> >>>> Sorry, missed the message. Gentoo kernel I'm using is very close to
> >>>> upstream. I will try ath11.git, and will report there, thank you.
> >>>>
> >>>
> >>> I checked ath.git, master branch - it has the exact same behavior as
> >>> kernel I used - 1Gbit download with CCMP, 100Mbit download with GCMP.
> >>> For me, this issue is easily reproducible, it happens 100% if I'm
> >>> switching to pairwise_cipher (and therefore, groupwise, too) other
> >>> than CCMP.
> >> I just submitted a patch which may fix this issue, could you merge it and
> >> try again?
> >>
> >>
> >> https://patchwork.kernel.org/project/linux-wireless/patch/20240531021228.2846-1-quic_bqiang@quicinc.com/
> >>
> >>>>>>>
> >>>>>>> Here is my dmesg for ath11k:
> >>>>>>> [   13.092519] ath11k_pci 0000:02:00.0: BAR 0: assigned [mem
> >>>>>>> 0x78600000-0x787fffff 64bit]
> >>>>>>> [   13.093400] ath11k_pci 0000:02:00.0: enabling device (0000 ->
> >> 0002)
> >>>>>>> [   13.095723] ath11k_pci 0000:02:00.0: MSI vectors: 32
> >>>>>>> [   13.096260] ath11k_pci 0000:02:00.0: wcn6855 hw2.1
> >>>>>>> [   13.974707] ath11k_pci 0000:02:00.0: chip_id 0x12 chip_family 0xb
> >>>>>>> board_id 0xff soc_id 0x400c1211
> >>>>>>> [   13.974732] ath11k_pci 0000:02:00.0: fw_version 0x1106196e
> >>>>>>> fw_build_timestamp 2024-01-12 11:30 fw_build_id
> >>>>>>> WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.37
> >>>>>>> [   14.315774] ath11k_pci 0000:02:00.0: Failed to set the requested
> >>>>>>> Country regulatory setting
> >>>>>>> [   14.316046] ath11k_pci 0000:02:00.0: Failed to set the requested
> >>>>>>> Country regulatory setting
> >>>>>>> [  337.889222] ath11k_pci 0000:02:00.0: failed to enqueue rx buf: -28
> >>>>>>>
> >>>>>>
> >>>>>> There was another reporting of that error in this thread:
> >>>>>>
> >> https://lore.kernel.org/all/5c63a3a2-29fe-444c-96f1-f87c89d7af39@gmail.com/
> >>>>>>
> >>>>> I don't think this is the same issue as reported by James there
> >> although
> >>>>> same error message. For now I don't know the root cause to that message
> >>>>> but it's unlikely it causes some tput issue.
> >>>>>
> >>>>> Let's wait for Yasoslav verifying it on latest ath.git.
> >>>>>
> >>>>>> +Baochen Qiang for awareness
> >>>>>>
> >>>>>> /jeff
> >>
> >