net: fec: fix hardware time stamping by external devices

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Fix support for external PTP-aware devices such as DSA or PTP PHY:

Make sure we never time stamp tx packets when hardware time stamping
is disabled.

Check for PTP PHY being in use and then pass ioctls related to time
stamping of Ethernet packets to the PTP PHY rather than handle them
ourselves. In addition, disable our own hardware time stamping in this
case.

Fixes: 6605b730c0 ("FEC: Add time stamping code and a PTP hardware clock")
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

This commit is contained in:

Sergey Organov 2020-07-14 19:28:02 +03:00 • committed by Jakub Kicinski

parent c28d9a2856

commit 340746398b

3 changed files with 30 additions and 6 deletions

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1

drivers/net/ethernet/freescale/fec.h

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23

drivers/net/ethernet/freescale/fec_main.c

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12

drivers/net/ethernet/freescale/fec_ptp.c

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