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Message-ID: <4e098ca82ce29fa0c534a1aa18f72eea@kapio-technology.com>
Date: Sun, 04 Dec 2022 16:08:27 +0100
From: netdev@...io-technology.com
To: Vladimir Oltean <olteanv@...il.com>
Cc: davem@...emloft.net, kuba@...nel.org, netdev@...r.kernel.org,
Andrew Lunn <andrew@...n.ch>,
Florian Fainelli <f.fainelli@...il.com>,
Eric Dumazet <edumazet@...gle.com>,
Paolo Abeni <pabeni@...hat.com>,
open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v8 net-next 2/2] net: dsa: mv88e6xxx: mac-auth/MAB
implementation
On 2022-11-20 16:00, Vladimir Oltean wrote:
> On Sun, Nov 20, 2022 at 11:21:08AM +0100, netdev@...io-technology.com
> wrote:
>> I have something like this, using 'mvls vtu' from
>> https://github.com/wkz/mdio-tools:
>> VID FID SID P Q F 0 1 2 3 4 5 6 7 8 9 a
>> 0 0 0 y - - = = = = = = = = = = =
>> 1 2 0 - - - u u u u u u u u u u =
>> 4095 1 0 - - - = = = = = = = = = = =
>>
>> as a vtu table. I don't remember exactly the consequences, but I am
>> quite
>> sure that fid=0 gave
>> incorrect handling, but there might be something that I have missed as
>> to
>> other setups.
>
> Can you please find out? There needs to be an answer as to why
> something
> which shouldn't happen happens.
Just an update on this, as when running the selftests now, I have
experienced
the case where fid=0 in the interrupt handler. The reported mac is the
same
as the one where the handling was successful in the selftest.
So I don't know what causes this fid=0 event, maybe some timing with the
chip
op when stressed resulting in erroneous reading of fid?
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