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Message-ID: <c8b2ef73330c7bc5d823997dd1c8bf09@walle.cc>
Date: Thu, 08 Dec 2022 10:27:48 +0100
From: Michael Walle <michael@...le.cc>
To: horatiu.vultur@...rochip.com
Cc: Steen.Hegelund@...rochip.com, UNGLinuxDriver@...rochip.com,
daniel.machon@...rochip.com, davem@...emloft.net,
edumazet@...gle.com, kuba@...nel.org, lars.povlsen@...rochip.com,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
netdev@...r.kernel.org, olteanv@...il.com, pabeni@...hat.com,
richardcochran@...il.com
Subject: Re: [PATCH net-next v3 4/4] net: lan966x: Add ptp trap rules
Am 2022-12-08 10:25, schrieb Michael Walle:
> Hi Horatiu,
>
>> Currently lan966x, doesn't allow to run PTP over interfaces that are
>> part of the bridge. The reason is when the lan966x was receiving a
>> PTP frame (regardless if L2/IPv4/IPv6) the HW it would flood this
>> frame.
>> Now that it is possible to add VCAP rules to the HW, such to trap
>> these
>> frames to the CPU, it is possible to run PTP also over interfaces that
>> are part of the bridge.
>
> This gives me:
>
> # /etc/init.d/S65ptp4l start
> Starting linuxptp daemon: OK
> [ 44.136870] vcap_val_rule:1678: keyset was not updated: -22
> [ 44.140196] vcap_val_rule:1678: keyset was not updated: -22
> #
>
> # ptp4l -v
> 3.1.1
> # uname -a
> Linux buildroot 6.1.0-rc8-next-20221208+ #924 SMP Thu Dec 8 10:08:58
> CET 2022 armv7l GNU/Linux
>
> I don't know whats going on, but I'm happy to help with debugging with
> some
> guidance.
Oh, and linuxptp is running on eth0, no bridges are set up. linuxptp
is started with "/usr/sbin/ptp4l -f /etc/linuxptp.cfg"
# cat /etc/linuxptp.cfg
# LinuxPTP configuration file for synchronizing the system clock to
# a remote PTP master in slave-only mode.
#
# By default synchronize time in slave-only mode using UDP and hardware
time
# stamps on eth0. If the difference to master is >1.0 second correct by
# stepping the clock instead of adjusting the frequency.
#
# If you change the configuration don't forget to update the phc2sys
# parameters accordingly in linuxptp-system-clock.service (systemd)
# or the linuxptp SysV init script.
[global]
slaveOnly 1
delay_mechanism Auto
network_transport UDPv4
time_stamping hardware
step_threshold 1.0
[eth0]
-michael
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