Re: [Linuxptp-users] received SYNC without timestamp

[Richard C. <ric...@gm...>]

On Tue, Jan 11, 2022 at 04:57:25PM +0100, Martin Pecka wrote:

> So it seems the card timestamps FOLLOW_UP and DELAY_RESP packets, but does
> not timestamp SYNC packets. Why could this be? Can it somehow mismatch SYNC
> and FOLLOW_UP messages in the chip and stamp the wrong one? (I think
> FOLLOW_UP stamps are not good for anything, are they?). Or is it still some
> problem with ptp4l not reading the socket?

No, no, NO!

The msg_sots_missing() function checks the message type.  It always
returns FALSE (zero) for non-event messages like FOLLOW_UP.

Thanks,
Richard