How is wireless signal strength for NetworkManager calculated

[Rejy M Cyriac]

On 01/23/2014 06:40 PM, Rejy M Cyriac wrote:
> On 01/23/2014 06:21 PM, poma wrote:
>> On 23.01.2014 07:40, Rejy M Cyriac wrote:
>>> On 01/20/2014 10:28 AM, Ranjan Maitra wrote:
>> …
>>>> While I am  here, I also wanted to know the answer to the question as
>>>> to how the interfaces are decided in latter-day Fedoras: to elucidate,
>>>> it used to be that eth0 and wlan0 and ppp0 were the interfaces. Now it
>>>> seems to depend (and vary from one machine to the other). How do these
>>>> get decided nowadays? Is there a generic way to get to the correct
>>>> interface to use in programming? I am thinking of conky which requires
>>>> the interface (from ifconfig, say) to set up signal strength, etc.
>>>>
>>> That would be biosdevname. It has been around for some time now.
>>
>> $ rpm -q biosdevname
>> package biosdevname is not installed ;)
>>
>> Predictable Network Interface Names [1]
>> $ man 7 udev
>>
>> $ nmcli device status
>> DEVICE      TYPE      STATE
>> enp1s9      ethernet  connected
>>
>>
>> poma
>>
>>
>> [1]
>> http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/
>> http://cgit.freedesktop.org/systemd/systemd/tree/src/udev/udev-builtin-net_id.c#n20
>>
> 
> Interesting. I stand corrected. Thanks poma. :-)
> 
> Does that mean we cannot disable the feature by a kernel parameter any
> more ?
> 
Hold on. But I do see it on my Fedora 20 system.

$ rpm -q biosdevname
biosdevname-0.5.0-2.fc20.x86_64

- rejy (rmc)