> -----Original Message-----
> From: Richard Cochran <richardcoch...@gmail.com>
> Sent: Sunday, June 13, 2021 11:39 PM
> To: Karthick Gunasekaran <karth...@pluribusnetworks.com>
> Cc: linuxptp-users@lists.sourceforge.net
> Subject: Re: [Linuxptp-users] [LinuxPTP] Seeing SYNC without timestamp,
> DELAY_REQ without timestamp
>
> On Mon, Jun 14, 2021 at 11:17:18AM +0530, Karthick Gunasekaran via Linuxptp-
> users wrote:
> > When trying ptp4l with hardware timestamp on a hw timestamp supported
> interface, the sync and delay request packets are being received without
> timestamp.
> >
> > Linux version : 4.4.0-87-generic
>
> That must be a distro kernel -- which distro?
>
> > root@ptp-slave:~# ethtool -i enp1s0f0
> > driver: i40e
> > version: 2.15.9
>
> Hm, did kernel 4.4 already have PTP support in the i40e?
>
> Maybe this is a buggy back port?
>
The first initial release of the kernel that hat i40e PTP support is v3.14,
however... there are a lot of fixes, many of which are significantly newer than
4.4
> Thanks,
> Richard
>
>
>
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