Thread: [Linuxptp-users] Intel X722 maybe incompatible with IEEE1588 2.1

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[Linuxptp-users] Intel X722 maybe incompatible with IEEE1588 2.1

From: Cliff S. <csp...@go...> - 2022-10-20 07:52:14

I'm looking into it further, but it looks like the X722 (which uses
the i40e driver) does not record RX timestamps on layer 2 1588 event
packets where the version is set to 2.1 rather than 2.

I found this issue previously reported last year
(https://www.mail-archive.com/lin...@li.../msg02414.html).
I believe this is the root cause. An easy workaround is to manually
patch linuxptp to set version 2.0.

-cliff

Re: [Linuxptp-users] Intel X722 maybe incompatible with IEEE1588 2.1

From: Richard C. <ric...@gm...> - 2022-10-20 12:53:16

On Thu, Oct 20, 2022 at 12:27:06AM -0700, Cliff Spradlin via Linuxptp-users wrote:
> I'm looking into it further, but it looks like the X722 (which uses
> the i40e driver) does not record RX timestamps on layer 2 1588 event
> packets

But it does timestamp UDPv4 frames?

> where the version is set to 2.1 rather than 2.

Thanks,
Richard

Re: [Linuxptp-users] Intel X722 maybe incompatible with IEEE1588 2.1

From: Miroslav L. <mli...@re...> - 2022-10-20 15:00:04

On Thu, Oct 20, 2022 at 12:27:06AM -0700, Cliff Spradlin via Linuxptp-users wrote:
> I'm looking into it further, but it looks like the X722 (which uses
> the i40e driver) does not record RX timestamps on layer 2 1588 event
> packets where the version is set to 2.1 rather than 2.
> 
I'm wondering if this could be fixed with a firmware update or if it's
in the silicon. I vaguely remember some Intel NIC had a firmware
update which added a timestamping filter.

-- 
Miroslav Lichvar

Re: [Linuxptp-users] Intel X722 maybe incompatible with IEEE1588 2.1

From: Keller, J. E <jac...@in...> - 2022-10-20 16:52:49


> -----Original Message-----
> From: Miroslav Lichvar <mli...@re...>
> Sent: Thursday, October 20, 2022 7:59 AM
> To: Cliff Spradlin <csp...@go...>
> Cc: lin...@li...
> Subject: Re: [Linuxptp-users] Intel X722 maybe incompatible with IEEE1588 2.1
> 
> On Thu, Oct 20, 2022 at 12:27:06AM -0700, Cliff Spradlin via Linuxptp-users
> wrote:
> > I'm looking into it further, but it looks like the X722 (which uses
> > the i40e driver) does not record RX timestamps on layer 2 1588 event
> > packets where the version is set to 2.1 rather than 2.
> >
> I'm wondering if this could be fixed with a firmware update or if it's
> in the silicon. I vaguely remember some Intel NIC had a firmware
> update which added a timestamping filter.
> 
> --
> Miroslav Lichvar
> 

I am going to try and file a bug about this, thanks.

- Jake

Re: [Linuxptp-users] Intel X722 maybe incompatible with IEEE1588 2.1

From: Keller, J. E <jac...@in...> - 2022-10-20 16:54:12


> -----Original Message-----
> From: Cliff Spradlin via Linuxptp-users <lin...@li...>
> Sent: Thursday, October 20, 2022 12:27 AM
> To: lin...@li...
> Subject: [Linuxptp-users] Intel X722 maybe incompatible with IEEE1588 2.1
> 
> I'm looking into it further, but it looks like the X722 (which uses
> the i40e driver) does not record RX timestamps on layer 2 1588 event
> packets where the version is set to 2.1 rather than 2.
> 

I am going to try and file a ticket for this. Any other reproduction information you have would be appreciated.

Layer 2, with version 2.1. Do you happen to know what existing firmware version your X722 has?

Thanks,
Jake

> I found this issue previously reported last year
> (https://www.mail-archive.com/linuxptp-
> us...@li.../msg02414.html).
> I believe this is the root cause. An easy workaround is to manually
> patch linuxptp to set version 2.0.
> 
> -cliff
> 
> 
> _______________________________________________
> Linuxptp-users mailing list
> Lin...@li...
> https://lists.sourceforge.net/lists/listinfo/linuxptp-users

Re: [Linuxptp-users] Intel X722 maybe incompatible with IEEE1588 2.1

From: Cliff S. <csp...@wa...> - 2022-10-20 17:18:59

Thanks for all the responses!

Richard Cochran wrote:
> But it does timestamp UDPv4 frames?

No - I hadn't been able to test that due to a firewall issue. But I
just tested and UDPv4 also fails in the same way.

Miroslav Vichnar wrote:
>I'm wondering if this could be fixed with a firmware update or if it's
> in the silicon. I vaguely remember some Intel NIC had a firmware
> update which added a timestamping filter.

That would be cool. I will follow up with Intel to check (and Jake has
now replied too).

On Thu, Oct 20, 2022 at 9:54 AM Keller, Jacob E
<jac...@in...> wrote:
> I am going to try and file a ticket for this. Any other reproduction information you have would be appreciated.

Thanks! I was also planning to file an IPS ticket, should I still do that?

Just built linuxptp from HEAD. I assume any ptp4l that sets version
2.1 (constant is in msg.h) would have the same failure.

On one side I ran:

sudo /tmp/ptp4l -m -4 -i eth0 -q

On the other I ran:

sudo /tmp/ptp4l -m -4 -i eth0 -q -s

Both sides will report errors -- one will report RX timestamp failures
on Sync, and the other on DelayReq. Like this:

ptp4l[25253.624]: port 1 (eth0): received SYNC without timestamp

> Layer 2, with version 2.1. Do you happen to know what existing firmware version your X722 has?

firmware-version: 5.10 0x800025e4 0.0.0

Re: [Linuxptp-users] Intel X722 maybe incompatible with IEEE1588 2.1

From: Keller, J. E <jac...@in...> - 2022-10-20 17:23:34


> -----Original Message-----
> From: Cliff Spradlin <csp...@wa...>
> Sent: Thursday, October 20, 2022 10:18 AM
> To: Keller, Jacob E <jac...@in...>; Miroslav Lichvar
> <mli...@re...>; Richard Cochran <ric...@gm...>
> Cc: lin...@li...
> Subject: Re: [Linuxptp-users] Intel X722 maybe incompatible with IEEE1588 2.1


> On Thu, Oct 20, 2022 at 9:54 AM Keller, Jacob E
> <jac...@in...> wrote:
> > I am going to try and file a ticket for this. Any other reproduction information
> you have would be appreciated.
> 
> Thanks! I was also planning to file an IPS ticket, should I still do that?
> 

Yes please.