[OpenWrt-Devel] ath10k-ct issues - IBSS mode

[Ben Greear]

On 4/15/19 7:07 AM, Koen Vandeputte wrote:
> 
> On 29.03.19 13:55, Hauke Mehrtens wrote:
>> On 3/29/19 1:43 PM, Ben Greear wrote:
>>>
>>> On 03/29/2019 02:58 AM, Koen Vandeputte wrote:
>>>> On 26.03.19 19:39, Ben Greear wrote:
>>>>> On 3/26/19 6:59 AM, Koen Vandeputte wrote:
>>>>>> On 26.03.19 14:50, Ben Greear wrote:
>>>>>>>
>>>>>>> On 03/26/2019 03:09 AM, Koen Vandeputte wrote:
>>>>>>>> Hi Ben,
>>>>>>>> Following our conversation from yesterday, here is a summary of
>>>>>>>> all issues seen so far:
>>>>>>>>
>>>>>>>> Test setup:
>>>>>>>>
>>>>>>>> - Board: Mikrotik RB922
>>>>>>>> - Hardware used: on-board QCA9882 (QCA988x),  Wave1  2x2 .ac
>>>>>>>> - firmware's tested: both non-HTT and HTT flavours for qca988x
>>>>>>>>
>>>>>>>> Synopsis:
>>>>>>>> - Setting the interface in IBSS mode results in following errors
>>>>>>>> and spamming
>>>>>>>> - Speed is very low (100 kbit/s) upon linking 2 devices in HT20,
>>>>>>>> long GI
>>>>>>> Hello,
>>>>>>>
>>>>>>> Do you see those SWBA overrun messages on both systems, or just one
>>>>>>> of them?
>>>>>>>
>>>>>>> I'll work on fixing the out-of-my-tree compile for 4.20 today, as
>>>>>>> well as do
>>>>>>> a quick test on 4.19 to see if I see that error below.
>>>>>>>
>>>>>>> Thanks,
>>>>>>> Ben
>>>>>>>
>>>>>> Hi Ben,
>>>>>>
>>>>>> A huge amount of then continuously:
>>>>> I updated ath10k-ct (commit-id:
>>>>> be5c21a82b15d28991500a28f7b2b6840356281f)
>>>>>
>>>>> I fixed part of the issue with 4.20 not compiling in openwrt, but the
>>>>> other part appears to be
>>>>> a backports issue, and I did not attempt to get that working.
>>>>>
>>>> Hi Ben,
>>>>
>>>> This is still remaining using 4.20:
>>>>
>>>> make[4]: Entering directory
>>>> '/mnt/ramdisk/koen/firmware/builds/generic_rb922/build_dir/target-mips_24kc_musl/linux-ar71xx_mikrotik/linux-4.14.109'
>>>>
>>>>    CC [M]
>>>> /mnt/ramdisk/koen/firmware/builds/generic_rb922/build_dir/target-mips_24kc_musl/linux-ar71xx_mikrotik/ath10k-ct-2019-03-26-be5c21a8/ath10k-4.20/mac.o
>>>>
>>>> /mnt/ramdisk/koen/firmware/builds/generic_rb922/build_dir/target-mips_24kc_musl/linux-ar71xx_mikrotik/ath10k-ct-2019-03-26-be5c21a8/ath10k-4.20/mac.c:
>>>> In function 'ath10k_mac_register':
>>>> /mnt/ramdisk/koen/firmware/builds/generic_rb922/build_dir/target-mips_24kc_musl/linux-ar71xx_mikrotik/ath10k-ct-2019-03-26-be5c21a8/ath10k-4.20/mac.c:9772:11:
>>>> error: 'NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT' undeclared (first use
>>>> in this function); did you mean
>>>> 'NL80211_EXT_FEATURE_DATA_ACK_SIGNAL_SUPPORT'?
>>>>             NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT);
>>>>             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>>>             NL80211_EXT_FEATURE_DATA_ACK_SIGNAL_SUPPORT
>>>> /mnt/ramdisk/koen/firmware/builds/generic_rb922/build_dir/target-mips_24kc_musl/linux-ar71xx_mikrotik/ath10k-ct-2019-03-26-be5c21a8/ath10k-4.20/mac.c:9772:11:
>>>> note: each undeclared identifier is reported only once for each
>>>> function it appears in
>>> I think you will need to go back to 4.19 based driver, or add a hack to
>>> #ifdef that code out while compiling
>>> in openwrt.
>>>
>>> I did a brief test with the 4.19 ct driver and it seems to work OK in my
>>> test setup.  Since it appears openwrt
>>> will be stuck on 4.19 for a while, I'll put some more effort into
>>> keeping my 4.19 tree up to date.
>>>
>>> Also, I found a nasty bug with mgt frames in htt-mgt mode yesterday, and
>>> uploaded new beta firmware to my
>>> web page...will post csums and such to this list later today.
>>>
>>> Thanks,
>>> Ben
>>>
>>>
>> Hi,
>>
>> I have a more recent mac80211 framework from kernel 5.1-rc2 in my
>> feature branch:
>> https://git.openwrt.org/?p=openwrt/staging/hauke.git;a=shortlog;h=refs/heads/mac80211-5.0
>> I plan to merge this after the next release is branched off.
>>
>> You could try that with ath10k-ct from kernel 4.20.
>>
>> Hauke
> Hi All,
> 
> I tested Hauke's idea but it didn't work:
> Latest mac80211 5.1-rc2 + ath10k-ct (4.19) --> Still the same errors as described initially (tried both CT firmware flavours - see bootlog below for details)
> Latest mac80211 5.1-rc2 + ath10k-ct (4.20) --> Compile error regarding blockack ..
> 
> So basically .. IBSS functionality died along the way.
> I recall I tested it roughly 1.5 years ago and it worked beautifully then.

You could try reverting to an older build that worked and then bisect?

IBSS at least sort of works in my lab (non-openwrt) setup, for what that is worth.  I do see some
cases where sometimes I have to restart supplicant to get things working, but
once the IBSS link is up, performance is fine.

Thanks,
Ben

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


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