[PATCH net-next 8/8] net: dsa: mt7530: implement port_change_conduit op

[Chester A. Unal]

On 10/06/2026 20:56, Daniel Golle wrote:
> Allow changing the CPU port affinity of user ports at runtime via
> the IFLA_DSA_CONDUIT netlink attribute. This updates the port matrix
> to forward to the new CPU port instead of the old one.
> 
> Signed-off-by: Daniel Golle <daniel at makrotopia.org>

Fabulous!

Acked-by: Chester A. Unal <chester.a.unal at arinc9.com>

> ---
>   drivers/net/dsa/mt7530.c | 29 +++++++++++++++++++++++++++++
>   1 file changed, 29 insertions(+)
> 
> diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
> index c96420c291d5..2f3e734b9f53 100644
> --- a/drivers/net/dsa/mt7530.c
> +++ b/drivers/net/dsa/mt7530.c
> @@ -3206,6 +3206,34 @@ static int mt753x_set_mac_eee(struct dsa_switch *ds, int port,
>   	return 0;
>   }
>   
> +static int
> +mt753x_port_change_conduit(struct dsa_switch *ds, int port,
> +			   struct net_device *conduit,
> +			   struct netlink_ext_ack *extack)
> +{
> +	struct dsa_port *new_cpu_dp = conduit->dsa_ptr;
> +	struct dsa_port *dp = dsa_to_port(ds, port);
> +	struct mt7530_priv *priv = ds->priv;
> +
> +	if (priv->id != ID_MT7531)
> +		return -EOPNOTSUPP;

Why do we limit this to MT7531 only?

Chester A.