How to obtain Link Quality information

Yeoh Chun-Yeow yeohchunyeow at gmail.com
Thu Jul 14 08:41:42 PDT 2016


tx rate reporting for Candela firmware is working? Any changes go into
the QCA released firmware?

---
Chun-Yeow

On Wed, Jul 13, 2016 at 11:44 PM, Ben Greear <greearb at candelatech.com> wrote:
> On 07/13/2016 08:37 AM, Iñaki Pascual wrote:
>>
>> Hi Ben,
>>
>> yes, I tried, it shows signal value but not link quality :(
>
>
> Link 'quality' is mostly just a made-up number anyway. Signal quality
> is probably the most similar value, but tx and rx bitrates give you the
> best idea of how RF is performing in my opinion.  Those rates are only
> accurate when sending at least modest amounts of packets though.
>
> Thanks,
> Ben
>
>
>
>>
>> onet at sc229:~$ iw dev wlan2 station dump
>> Station 04:f0:21:18:26:af (on wlan2)
>>      inactive time:    65 ms
>>      rx bytes:    3102896
>>      rx packets:    87403
>>      tx bytes:    0
>>      tx packets:    0
>>      tx retries:    0
>>      tx failed:    0
>>      signal:      -63 dBm
>>      signal avg:    -62 dBm
>>      tx bitrate:    6.0 MBit/s
>>      rx bitrate:    6.0 MBit/s
>>      authorized:    yes
>>      authenticated:    yes
>>      preamble:    long
>>      WMM/WME:    yes
>>      MFP:        no
>>      TDLS peer:    no
>>      connected time:    4476 seconds
>> monet at sc229:~$
>>
>> Thanks,
>>
>> Iñaki
>>
>> On 13/07/16 16:40, Ben Greear wrote:
>>>
>>> On 07/13/2016 07:10 AM, Iñaki Pascual wrote:
>>>>
>>>> Hi everyone,
>>>>
>>>> I am trying to get link quality information from an 802.11ac interface
>>>> and it looks like the only way is to use "iw wlan2 scan". I don't like this
>>>> solution as
>>>> it scans all channels and takes a while.
>>>>
>>>> If I try "cat /proc/net/wireless" (this would be my preferred option)
>>>> the output is empty and I am not able to get this information with any other
>>>> tool. Below
>>>> is the output for some commands I tried.
>>>>
>>>> I am using kernel 4.2 with ath10k and Candela firmware 10.1 on a
>>>> Qualcomm Atheros QCA988x
>>>>
>>>> Any ideas on how can I get the link quality information?
>>>
>>>
>>> Did you try:
>>>
>>> iw dev wlan0 station dump
>>>
>>> If you want tx rate reporting, you need to run my driver patches as well
>>> as my firmware, but rx-rate should be reported with stock driver
>>> (and stock firmware, for that matter)...
>>>
>>> Thanks,
>>> Ben
>>>
>>
>>
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>
>
> --
> Ben Greear <greearb at candelatech.com>
> Candela Technologies Inc  http://www.candelatech.com
>
>
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