On Fri, Aug 26, 2022 at 08:58:31AM +0200, Íñigo Huguet wrote:

On Thu, Aug 25, 2022 at 6:17 PM Andrew Lunn [off-list ref] wrote:

quoted

On Thu, Aug 25, 2022 at 11:02:39AM +0200, Íñigo Huguet wrote:

quoted

Most recent cards (8000 series and newer) had enough hardware support
for this, but it was not enabled in the driver. The transmission of PTP
packets over these protocols was already added in commit bd4a2697e5e2
("sfc: use hardware tx timestamps for more than PTP"), but receiving
them was already unsupported so synchronization didn't happen.

You don't appear to Cc: the PTP maintainer.

    Andrew

I didn't think about that, but looking at MAINTAINERS, there doesn't
seem to be any. There are 2 maintainers for the drivers of the clock
devices, but none for anything related to the network protocol...

PTP HARDWARE CLOCK SUPPORT
M:      Richard Cochran [off-list ref]
L:      netdev@vger.kernel.org
S:      Maintained
W:      http://linuxptp.sourceforge.net/
F:      Documentation/ABI/testing/sysfs-ptp
F:      Documentation/driver-api/ptp.rst
F:      drivers/net/phy/dp83640*
F:      drivers/ptp/*
F:      include/linux/ptp_cl*

I assume you are using linuxptp with this?

  Andrew