On Sun, 2 Dec 2018 13:54:11 +0300 Igor Ryzhov <iryzhov at nfware.com> wrote: > Stephen, > > ethtool_get_link returns EOPNOTSUPP if device doesn't supply get_link: > You are right, kni needs to supply ethool ops and can use the standard ethtool_op_get_link as the callback.