On Fri, Sep 29, 2017 at 03:28:02PM +0000, Brandon Streiff wrote:

NETWORK_PHY_TIMESTAMPING implies NET_PTP_CLASSIFY (which I do use)
and net/core/timestamping.c (which I didn't). It probably makes more
sense to just depend on NET_PTP_CLASSIFY directly.

Yes, that makes sense to do, if you can make it work.

With my driver I tried depending on NET_PTP_CLASSIFY, but there was
some Kconfig issue, and rather than figuring it out I did the lazy
thing and used NETWORK_PHY_TIMESTAMPING.

Thanks,
Richard