From: Andrew Lunn <and...@lunn.ch> Date: Wed, 17 Feb 2016 21:32:05 +0100
> Some Ethernet PHYs contain a simple packet generator. This can be > useful for bringing up new devices, trying to determine if a problem > lies in the MAC-PHY connection or PHY-Socket. Also, the PHY generators > can generate invalid packets, which is hard to do in software. > > Add support ethtool(1) and wire up the Marvell PHY packet generator. You really cannot make this blocking, every time we've added a blocking ethtool op that could take a non-trivial amount of time we've been burnt. So as Ben mentioned blocking for 0.3 seconds or whatever is a non-starter.
