Re: [Linuxptp-users] "poll tx timestamp timeout", problem since v1.2, igb, stmmac

[Richard C. <ric...@gm...>]

On Fri, Oct 25, 2013 at 04:10:36PM +0200, Jean-Baptiste Maillet wrote:
> 
> On the kernel side, for driver/ptp/ I'm on 0d8c3e7 "ptp_pch: fix error handling in pch_probe()" for stmmac,
> Debian 3.10.7-1 for i210.

So 0d8c3e7 means a pure mainstream kernel (v3.10-rc5~25^2~36)?

And Debian kernel is from testing or unstable?

I don't really trust the Debian kernels. I would try the igb driver
from a recent mainline kernel. The igb driver really should be working
in mainline Linux.

Regarding the stmmac, although I reviewed the patches, I never tested
them (no hardware to try), and so I would not be surprised if it had
bugs.
 
> To this point, I think this is a hardware driver issue (not really ptp4l nor ptp driver, and hoping this is not
> a combination of the 3) but any suggestion would be welcome.

If not a hardware issue, then probably a driver/kernel issue. The
ptp4l program hasn't really ever substantially changed the way the
transmit time stamps are read.

Thanks,
Richard