Re: [Linuxptp-users] using ptp4l on vlan interfaces

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

On Tue, 2013-12-17 at 13:44 -0600, Shawn Bohrer wrote:
> > >  I'm not sure how it is done, but should ptp4l recognize
> > > that it is a vlan interface and perform ioctl and ethtool queries
> > > against the actual device interface?  I know the 'ip' tool associates
> > > vlan807 with eth4 so that mapping can be detected somehow:
> > 
> > I think it would be nicer if the kernel did this for us automatically,
> > but I'll have to take this up on the netdev list.
> 
> Cool, I agree that it seems like the kernel should at least pass only
> the ethtool information from the actual device for a vlan interface.
> What is your suggestion for the ioctl?  Should the kernel
> automatically perform that on the correct driver as well?  Are you
> going to raise this on netdev or should I?
> 
> Thanks,
> Shawn

I agree that the kernel could be extended to enable vlans. The trick
being what should be done if the vlan requests it, and the base driver
gets a direct request, which one should be honored? This could get a
little complicated...

When this goes to netdev, I would ilke to be Cc'ed on the discussion.

Regards,
Jake