Re: [Linuxptp-users] Lookup ethXXX device from ptpXYZ ?

[Keller, J. E <jac...@in...>]

On 11/3/2021 6:49 AM, Mainz, Roland wrote:
> Hi!
> 
> ----
> 
> Is there a way (sysfs, procfs, etc.) to get the list of ethX (eth0, eth1, ...) devices from a fd for a /dev/ptpXYZ device (e.g. in: fd to /dev/ptp8, out: string "eth6") ?
> 
> ----
> 
> Mfg,
> Roland Mainz
> 

As far as I know, the only link between netdev and PTP device is the
ethtool ioctl for timestamping. You could check every single ethernet
device and see what its clock index reports in "ethtool -T"...

I don't think there's anything specific in the sysfs files of the PTP
devices to go backwards otherwise.

Thanks,
Jake