Re: [PATCH v8 net-next 2/2] net: dsa: mv88e6xxx: mac-auth/MAB implementation

netdev
2022-12-04T15:08:40Z

On 2022-11-20 16:00, Vladimir Oltean wrote:
> On Sun, Nov 20, 2022 at 11:21:08AM +0100, netdev@kapio-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?