Re: [PATCH net v2 2/2] net: dsa: mv88e6xxx: flush the ATU when the hash algorithm changes

[Andrew Lunn]

On Fri, Jul 10, 2026 at 09:29:33AM +1000, Luke Howard wrote:
> Changing the ATU hash algorithm invalidates existing entries: those
> loaded under the previous algorithm end up in different bins and read
> back corrupted.
> 
> Flush the ATU whenever the hash algorithm is changed through devlink
> and reload the default broadcast entries. Per-VLAN ATU entries and
> any static addresses are not replayed, so the hash must be selected
> before the FDB or MDB are configured.
> 
> Fixes: 23e8b470c778 ("net: dsa: mv88e6xxx: Add devlink param for ATU hash algorithm.")
> Assisted-by: Claude:claude-opus-4-8
> Signed-off-by: Luke Howard <lukeh@xxxxxxxx>

Reviewed-by: Andrew Lunn <andrew@xxxxxxx>

    Andrew