[Intel-wired-lan] [RFC v2 net-next 1/2] rtnetlink: Add new RTM_GETSYNCESTATE message to get SyncE status

[Andrew Lunn]

> > I have nothing against exposing the DPLL if you need to, however I'd like to have
> > an interface that support plain Gigabit as well.  This could be done in a generic
> > way by offering Control Register 9 as described in 802.3.

Are we talking about Clause 22, register 9, also known as MII_CTRL1000?

> This part of Gigabit interface is a different part of SyncE device. It controls Master/Slave
> operation of auto-negotiation.

This is controlled using ethtool -s

      ethtool -s devname [speed N] [duplex half|full] [port tp|aui|bnc|mii]
              ....
              [sopass xx:yy:zz:aa:bb:cc] [master-slave preferred-
              master|preferred-slave|forced-master|forced-slave]

      Andrew