[OpenWrt-Devel] RT5350F WiFi interface performance issue

[Zoltan Gyarmati]

On 27.05.2018 01:26, Koen Vandeputte wrote:
>
>
> On 27-05-18 01:08, Zoltan Gyarmati wrote:
>> On 27.05.2018 00:29, Koen Vandeputte wrote::07, Zoltan Gyarmati wrote:
>>>> Dear Koen&All
>>>>
>>>> On 25.05.2018 14:33, Zoltan Gyarmati wrote:
>>>>> On 25.05.2018 14:03, Koen Vandeputte wrote:
>>>>>>
>>>>>>
>>>>>> On 2018-05-25 13:30, Zoltan Gyarmati wrote:
>>>>>>> Dear All,
>>>>>>>
>>>>>>>  I'm testing the current OpenWrt  (master/HEAD) on RT5350F 
>>>>>>> Olinuxino. Unfortunately the WiFi interface doesn't seem to work 
>>>>>>> properly in client mode. `iwinfo wlan0 scan` runs successfully 
>>>>>>> and shows my AP, but when i configure the interface as client 
>>>>>>> and try to connect, the authentication seems to be successful 
>>>>>>> (according to dmesg), but the wlan0 interface never gets IP 
>>>>>>> address, even if i explicitly call udhcpc. If i set a static IP 
>>>>>>> address for wlan0, and ping my AP, i have around 88% packet 
>>>>>>> loss. There is no any relevant message in dmesg which could give 
>>>>>>> a hint about the reason.
>>>>>>>
>>>>>>> As a counter-check, i flashed the an old OpenWrt image from the 
>>>>>>> HW vendor with kernel 3.18, and with that one the WiFi interface 
>>>>>>> works properly.
>>>>>>> Does anyone else experience similar issues (either on this or 
>>>>>>> any other RT5350F board)? Do you have any advice what to look 
>>>>>>> into to sort this out?
>>>>>>>
>>>>>>>
>>>>>>> Thanks,
>>>>>>>
>>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> When you build master, did it already contain commit "hostapd: 
>>>>>> update to git HEAD of 2018-05-21, allow build against wolfssl" ?
>>>>>> Could you also try to build the 18.06 which does not contain this 
>>>>>> one and compare?
>>>>>>
>>>>>> You never know..
>>>>>
>>>>> No, it didn't have that commit yet. Now i build an image with this 
>>>>> new hostapd version and  I'll report. Thanks for the hint!
>>>>
>>>> It's the same behavior with the newer hostapd version as well. It 
>>>> seems I'll have to look into how to debug WiFi performance issues...
>>>>
>>> Hi Zoltan,
>>>
>>> When the issue appears, could you run following commands please and 
>>> share the output?
>>>
>>
>> My untrained eyes didn't spot anything unusual, but here are the 
>> outputs:
>>> - iw phy0 info
>> https://pastebin.com/2hQ5wbng
>>
>>
>>> - iw wlan0 info
>> https://pastebin.com/NPZZ1dBL
>>
>>
>>> - iwinfo
>> https://pastebin.com/RHuJuYYu
>>
>>
>>> - dmesg (just to be sure)
>> https://pastebin.com/1kTUY9t4
>>
>>
> Thanks for the dumps.
Well, thanks for looking into this!

> I see you are connected using channel 13 and HT40, but channel 12 and 
> channel 14 next to it are marked as "No IR"
>
> Could you try 1 more thing please?
> Please put the AP manually on channel 1 and retry.
Just tried it, no change...

In the meantime i also tried with an other AP, without security enabled, 
but got the same behavior.


>
> Thanks,
>
> Koen
>
>>>
>>>
>>>
>>> Thanks,
>>>
>>> Koen
>>>>
>>>>>
>>>>>>
>>>>>>
>>>>>> Koen
>>>>>>
>>>>>> [1] 
>>>>>> https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=69f544937f8498e856690f9809a016f0d7f5f68b
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>> Regards,
>>>>
>>>> Zoltan Gyarmati
>>>> https://zgyarmati.de
>>>>
>>>
>>
>>
>> Zoltan Gyarmati
>> https://zgyarmati.de
>>
>


Zoltan Gyarmati
https://zgyarmati.de


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