ioreg AVBControllerState - AVB/EAV Mode

Hello.

To determine wether "AVB/EAV Mode" of a AV-capable network interfaces is turned on or off I query the IO registry and evaluate the property "AVBControllerState".

I was wondering if this is the "correct" approach and if there is anything known about the values for this property?

Network interfaces without AV capability may also carry this property (e.g.: for my WiFi adapter the value of 1) whereas the value for interfaces with AV capability can be 0 and 3. At least as far as I could observe with my limited amount of test devices at hand.

Is it safe to assume that a value of 3 means this feature is turned on, 0 that it is turned off and ignore values of 1?

Is there another approach to get to know the status of the "AVB/EAV Mode"?

Thanks for any insight.

Best regards,

Ingo

ioreg AVBControllerState - AVB/EAV Mode
 
 
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