Re: [PATCH net-next 2/2] net: dsa: mv88e6xxx: use direct ATU hash on 88E6141/6341

[Andrew Lunn]

On Fri, Jul 03, 2026 at 04:42:56PM +1000, Luke Howard wrote:
> The default 88E6341/88E6141 ATU hash algorithm appears to result
> in frequent collisions, evicting permanent registrations (including
> the broadcast address) out of the ATU.

Is there any documentation about how the 88E6341/88E6141 hashing
algorithm is different to all the other chips? How is it special?

> This workaround disables hasing in the ATU control register. It may

hashing.

> have a performance impact (the data sheet notes this is for testing
> only), but it also enables correctness, at least in local testing.

How do you define correctness? Are you using a well defined test?

Why is the devlink parameter not sufficient.

    Andrew