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authorRichard Cochran <richardcochran@gmail.com>2012-04-04 02:59:17 +0400
committerDavid S. Miller <davem@davemloft.net>2012-04-04 13:28:45 +0400
commitc8f3a8c31069137fe0100e6920558f1a7487ef3c (patch)
tree891303875fcca8c8110c949955b87e1447dbcdfc /Kconfig
parent995a9090b2b7dc734351f3ac0ba8d913ffb87001 (diff)
downloadlinux-c8f3a8c31069137fe0100e6920558f1a7487ef3c.tar.xz
ethtool: Introduce a method for getting time stamping capabilities.
This commit adds a new ethtool ioctl that exposes the SO_TIMESTAMPING capabilities of a network interface. In addition, user space programs can use this ioctl to discover the PTP Hardware Clock (PHC) device associated with the interface. Since software receive time stamps are handled by the stack, the generic ethtool code can answer the query correctly in case the MAC or PHY drivers lack special time stamping features. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Reviewed-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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