> The topic was running PTP over a VLAN
> interface.  This is now fully supported by the Linux kernel.

Even in kernel version 4.15.2 in file net/8021q/vlan_dev.c function
vlan_ethtool_get_ts_info contains the following code:

info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |

And it seems that absence of SOF_TIMESTAMPING_TX_SOFTWARE flag
in this place is leading to fail in ethtool check. Is adding the flag in
this function
is all I need to do to implement this functionality? It seems like it
isn't, but I'm not
sure. Don't you know any manual I could refer?

Also, as a network driver I am using a custom EoP driver. Do you have any
about on which stage something can go wrong? I guess that the problem may be
caused by this driver.

On Wed, Feb 7, 2018 at 5:52 PM, Richard Cochran <richardcoch...@gmail.com>

> On Wed, Feb 07, 2018 at 12:39:12PM +0200, Yan Yankovskyi wrote:
> > On Tue, Feb 6, 2018 at 7:49 PM, Richard Cochran <
> richardcoch...@gmail.com>
> > wrote:
> > > By "board running Linux" you mean a custom embedded design, don't you?
> >
> > Exactly. Connection is established using the BroadR-Reach <-> Ethernet
> > converter, if it matters.
> IOW, you are using your own unpublished custom driver.  Sorry, can't
> help you with that.
> If there is an issue with TLV handling, please reproduce it using
> standard drivers and unaltered linuxptp sources.  Then, post the
> details of the configuration.
> > >> ethtool reports that the board doesn't support
> >
> > > Then you are out of luck.
> >
> > Is it crucial? Am I able to add support of this timestamp mode by myself?
> I hope so.
> Thanks,
> Richard

Best regards,

Yan Yankovskyi | Junior Software Engineer, Ukraine
M  +380. <+380950496473>   Skype huandesale


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