Re: [PATCH net-next 0/5] PTP support for the SJA1105 DSA driver

[Richard Cochran]

On Thu, May 30, 2019 at 06:23:09PM +0300, Vladimir Oltean wrote:
> On Thu, 30 May 2019 at 18:06, Richard Cochran <richardcochran@xxxxxxxxx> wrote:
> >
> > But are the frames received in the same order?  What happens your MAC
> > drops a frame?
> >
> 
> If it drops a normal frame, it carries on.
> If it drops a meta frame, it prints "Expected meta frame", resets the
> state machine and carries on.
> If it drops a timestampable frame, it prints "Unexpected meta frame",
> resets the state machine and carries on.

What I meant was, consider how dropped frames in the MAC will spoil
any chance that the driver has to correctly match time stamps with
frames.

Thanks,
Richard