On Wed, 5 Jun 2019 at 20:45, Richard Cochran <richardcoch...@gmail.com> wrote: > > On Wed, Jun 05, 2019 at 02:33:52PM +0300, Vladimir Oltean wrote: > > In the meantime: Richard, do you have any objections to this patchset? > > I like the fact that you didn't have to change the dsa or ptp > frameworks this time around. I haven't taken a closer look than that > yet. > > > I was wondering whether the path delay difference between E2E and P2P > > rings any bell to you. > > Can it be that the switch applies corrections in HW? >
Yes it can be. It was one of the first things I thought of. Normally it updates the correction field with its own residence time in 1-step L2 event messages (but I use 2 step). It also has a bit called IGNORE2STF (ignore 2-step flag) by which it updates the correction field in all L2 event messages (including sync, thereby violating the spec for a switch, as far as I'm aware). But I'm not setting it. I also looked at egress frames with wireshark and the correction field is zero. > Thanks, > Richard Thanks, -Vladimir
