| Re: [chrony-users] Hardware timestamping in CentOS 7.4 (was: Possible to get sub-millisecond accuracy?) |
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- To: chrony-users@xxxxxxxxxxxxxxxxxxxx
- Subject: Re: [chrony-users] Hardware timestamping in CentOS 7.4 (was: Possible to get sub-millisecond accuracy?)
- From: Chris Perl <cperl@xxxxxxxxxxxxxx>
- Date: Fri, 23 Jun 2017 14:38:26 -0400
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On Fri, Jun 23, 2017 at 1:10 PM, Miroslav Lichvar <mlichvar@xxxxxxxxxx> wrote:
> I think we can support it, at least with a new option that would
> disable the filter. I actually have a patch in my queue to allow
> disabling the new NTP-specific filter, which should be added in 4.13
> (although there is currently no HW that supports both). I can rework
> the option to select a specific filter and allow "none", which would
> disable RX timestamping.
I'm not sure I follow. What is the new NTP-specific filter?
> I don't think there will be any changes in the kernel specific to
> that. It should work even with the 7.3 kernel. The chrony code just
> needs to be patched to enable the support for SW timestamping without
> full HW timestamping support.
Is that work that is already underway or in the queue? Or is it
something that you'd take patches for?
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