tree d9525359409e3493b48e8676717cc11ed69b640a
parent 15f0127d1d189fda3294b7823e3e654afca54055
author Richard Cochran <richardcochran@gmail.com> 1279356576 +0000
committer David S. Miller <davem@davemloft.net> 1279505726 -0700

net: support time stamping in phy devices.

This patch adds a new networking option to allow hardware time stamps
from PHY devices. When enabled, likely candidates among incoming and
outgoing network packets are offered to the PHY driver for possible
time stamping. When accepted by the PHY driver, incoming packets are
deferred for later delivery by the driver.

The patch also adds phylib driver methods for the SIOCSHWTSTAMP ioctl
and callbacks for transmit and receive time stamping. Drivers may
optionally implement these functions.

Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
Signed-off-by: David S. Miller <davem@davemloft.net>