enetc: add software timestamping

Provide a software TX timestamp and add it to the ethtool query
interface.

skb_tx_timestamp() is also needed if one would like to use PHY
timestamping.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Walle 2019-12-10 01:15:37 +01:00 • committed by David S. Miller
commit 4caefbce06
2 changed files with 3 additions and 0 deletions