Re: TP-LINK USB no carrier after speed test

From: Hans Petter Selasky <hps_at_selasky.org>
Date: Fri, 16 Sep 2022 06:34:03 UTC
On 9/16/22 08:20, Hans Petter Selasky wrote:
> On 9/15/22 17:36, Ivan Quitschal wrote:
>>
>>
>> On Thu, 15 Sep 2022, Ivan Quitschal wrote:
>>
>>>
>>>
>>> On Thu, 15 Sep 2022, Hans Petter Selasky wrote:
>>>
>>>> On 9/15/22 17:18, Hans Petter Selasky wrote:
>>>>> On 9/15/22 17:16, Ivan Quitschal wrote:
>>>>>>
>>>>>> Hi All
>>>>>>
>>>>>> Does anybody have any idea what could be happening here?.
>>>>>> I have a laptop DELL INSPIRON 3511 and everything works just fine, 
>>>>>> literally everything. even the iwlwifi0.
>>>>>>
>>>>>> But in order to use my full 600mbps, i dont use the wireless but a 
>>>>>> TP-LINK USB ethernet connected on "ue0"
>>>>>>
>>>>>> ugen0.6: <TP-Link USB 10/100/1000 LAN> at usbus0, cfg=0 md=HOST 
>>>>>> spd=HIGH (480Mbps) pwr=ON (200mA)
>>>>>>
>>>>>>
>>>>>> but something really strange is happening .. everytime i open the 
>>>>>> chromium e do a speedtest (could be speedtest.net or any other) , 
>>>>>> at the end of the test the eth interface dies .. it changes from 
>>>>>> full-duplex to half-duplex/no carrier and the only way to get the 
>>>>>> internet back thru ue0 is by rebooting the whole thing.
>>>>>> not even a "service netif restart" does anything
>>>>>>
>>>>>> if anyone has any ideas why is that , would be appreciated
>>>>>>
>>>>>
>>>>> Hi,
>>>>>
>>>>> I think it some new features they use in the USB data protocol 
>>>>> which we don't support. Check the Linux code.
>>>>>
>>>>> Between does:
>>>>>
>>>>> usbconfig -d 0.6 reset
>>>>>
>>>>> recover the device?
>>>>>
>>>>> --HPS
>>>>>
>>>>
>>>> Hi,
>>>>
>>>> Search for axge on bugzilla:
>>>>
>>>> I suspect you are using this chipset:
>>>>
>>>> Try:
>>>>
>>>> usbconfig show_ifdrv
>>>>
>>>> To know for sure.
>>>>
>>>> Also see:
>>>>
>>>> https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbugs.freebsd.org%2Fbugzilla%2Fshow_bug.cgi%3Fid%3D210488&amp;data=05%7C01%7C%7Ce7f888b3635f4e898ca308da972fa69b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637988528164303655%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&amp;sdata=zvw7m8lJ%2FHocK%2FXJIDfdPv%2FArCpE5pk9lYz%2BY8WzMCc%3D&amp;reserved=0 
>>>>
>>>>
>>>> --HPS
>>>>
>>>
>>>
>>> Hi Hans,
>>>
>>> actually the driver i use is not agxe (i thought it would be by the 
>>> time i
>>> bought the usbcard)
>>>
>>> this is the module im using
>>>
>>> if_ure.ko
>>>
>>> and thank you , yes, reseting the usb entry with your command worked 
>>> just fine.
>>> i got the internet back after doing this
>>>
>>> usbconfig -d 0.6 reset
>>>
>>> do we have a bug here then?
>>>
>>> thank you
>>>
>>> --tzk
>>>
>>
>> oh, i forgot to mention that the ure driver freezes not during the 
>> download test but in the middle of the upload, always
>>
>> dont know if that helps
>>
>> thanks
>>
>> --tzk
> 
> Hi Ivan,
> 
> Yes, there seems to be problem there. I need to look at the driver. 
> Maybe it is simply sending too much data, than the device can handle!
> 
> --HPS
> 

Hi,

Try lowering this constant to 8192:

sys/dev/usb/net/if_urereg.h:#define	URE_TX_BUFSZ		16384

Then recompile and install if_ure:

make -C sys/modules/usb/ure KMODDIR=/boot/kernel all install

--HPS