On Wed, Jan 18, 2017 at 09:49:13AM -0800, Denny Page wrote:
> And To be clear, this would not address phy/mac delay/asymmetry issues. It 
> would just replace the call to PTP_SYS_OFFSET. Instead of an array that you 
> have to interpolate, you just get a single (accurate) value. This would be 
> very helpful however, because PTP_SYS_OFFSET is the source of most of the 
> variance in ethtscal.

Avoiding the asymmetry on the PCIe bus is what I'm most interested in.
I'll add support for the new ioctl, but I wanted to test it first. I
think I found a system that has art and e1000e in our lab, so I'll see
if I can test it there.

-- 
Miroslav Lichvar

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