On Mon, 13 Mar 2023 at 12:12, Kamil Zaripov <zaripov-ka...@avride.ai> wrote:
> > > On 12 Mar 2023, at 14:18, Erez <erezge...@gmail.com> wrote: > > Sounds cool, but requires multiple clocks on the network interface. > Hardware or logic using a single hardware clock. > I do know that some do work on this. > Both in kernel and on application level. > > If we talk about ptp4l I think that two processes that synchronise their > access to the timestamping capabilities can run simultaneously on the same > “physical” network interface. And this patch designed change only ptp4l > process behaviour. It it affects other tools I need to fix it. > > Usually VLAN in Linux are deployed by adding a network interface for the > VLAN. > How is this patch feat to the Linux deployment of VLANs. > Nor do I see how this patch integrates with using multiple clocks. > > Please enlighten us. > > Erez > > > Actually I do not understand this question. Can you rephrase it? > As Richard explains. We use Linux VLAN. For example see "Create the VLAN device" https://wiki.archlinux.org/title/VLAN The vlan interface should point to the PHC associated with the network interface. The only problem is what happens if on top of a single network interface, you have several PTP networks, using VLANs. I do not refer to a bridge, but to an end device of several VLANs in which each VLANs use a separate PTP network. For this case you need multiple PHC. I assume you do not plan that yet. But once we do, we will need support to select a network interface and a PHP. But till then the Linux VLAN interface should be sufficient. Do you have other plans? As for Bridge. I am content with Richard replys. ptp4l is used as a PTP end device only. That could also explain why Richard did not like the virtual ports idea, as it might require the ptp4l to work as a virtual bridge :-) Erez > > Regards, > Zaripov Kamil. >
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