Subject: Re: [PATCH net-next v3 07/12] nfp: Implement ndo_get_port_parent_id()

From: Jiri Pirko <[email-masked]>
Date: Wed, 6 Feb 2019 14:23:02 +0100

Wed, Feb 06, 2019 at 12:53:21AM CET, [email-masked] wrote:
>NFP only supports SWITCHDEV_ATTR_ID_PORT_PARENT_ID, which makes it a
>great candidate to be converted to use the ndo_get_port_parent_id() NDO
>instead of implementing switchdev_port_attr_get().
>
>Since NFP uses switchdev_port_same_parent_id() convert it to use
>netdev_port_same_parent_id().
>
>Signed-off-by: Florian Fainelli <[email-masked]>

[...]

>@@ -31,34 +31,23 @@ struct nfp_port *nfp_port_from_netdev(struct net_device *netdev)
> 	return NULL;
> }
> 
>-static int
>-nfp_port_attr_get(struct net_device *netdev, struct switchdev_attr *attr)
>+int nfp_port_get_port_parent_id(struct net_device *netdev,
>+				struct netdev_phys_item_id *ppid)
> {
> 	struct nfp_port *port;
>+	const u8 *serial;
> 
> 	port = nfp_port_from_netdev(netdev);
> 	if (!port)
> 		return -EOPNOTSUPP;
> 
>-	switch (attr->id) {
>-	case SWITCHDEV_ATTR_ID_PORT_PARENT_ID: {
>-		const u8 *serial;
>-		/* N.B: attr->u.ppid.id is binary data */
>-		attr->u.ppid.id_len = nfp_cpp_serial(port->app->cpp, &serial);
>-		memcpy(&attr->u.ppid.id, serial, attr->u.ppid.id_len);
>-		break;
>-	}
>-	default:
>-		return -EOPNOTSUPP;
>-	}
>+	/* N.B: attr->u.ppid.id is binary data */

Comment is not updated. But I wonder if we really need it...

Otherwise this looks fine.
Acked-by: Jiri Pirko <[email-masked]>

>+	ppid->id_len = nfp_cpp_serial(port->app->cpp, &serial);
>+	memcpy(&ppid->id, serial, ppid->id_len);
> 
> 	return 0;
> }
> 
>-const struct switchdev_ops nfp_port_switchdev_ops = {
>-	.switchdev_port_attr_get	= nfp_port_attr_get,
>-};
>-
> int nfp_port_setup_tc(struct net_device *netdev, enum tc_setup_type type,
> 		      void *type_data)
> {

[...]