netdev - Re: [PATCH net-next v3 4/4] net: lan966x: Add ptp trap rules

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Date:   Thu,  8 Dec 2022 10:25:11 +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, michael@...le.cc
Subject: Re: [PATCH net-next v3 4/4] net: lan966x: Add ptp trap rules

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.

-michael