On Mon, Mar 15, 2021 at 10:40:08PM +0100, Frantisek Rysanek wrote: > Dear gentlemen, > thanks for opening this interesting topic... > > Is there any stock NIC (silicon, board), with an open-source Linux > driver, that would support SyncE off the shelf in the NIC hardware?
I didn't find anything in the current mainline kernel. There may be 3rd party open source drivers. In the Intel's igc driver I saw few SYNCE registers defined, but no code using them. > But at the level of a single port... what do you need? > SyncE enable / disable, and select master vs. slave role? At minimum, get the current state of the link with information like whether the port is TX/RX coherent to be able to provide the L1_SYNC TLV. > And yes there is some additional messaging, I understand in-band in > Ethernet, which would probably have to be handled by ptp4l software, > unless offloaded to the kernel-space driver or hardware... I'd expect the OSSP/ESMC part to be handled in the firmware. I think ptp4l should just be able to see the current status and maybe flip some bits to configure it. -- Miroslav Lichvar _______________________________________________ Linuxptp-devel mailing list Linuxptp-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-devel
