Re: [PATCH net-next v4 01/12] net: Introduce ndo_get_port_parent_id()

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On Wed, Feb 06, 2019 at 09:45:35AM -0800, Florian Fainelli wrote:
> In preparation for getting rid of switchdev_ops, create a dedicated NDO
> operation for getting the port's parent identifier. There are
> essentially two classes of drivers that need to implement getting the
> port's parent ID which are VF/PF drivers with a built-in switch, and
> pure switchdev drivers such as mlxsw, ocelot, dsa etc.
> 
> We introduce a helper function: dev_get_port_parent_id() which supports
> recursion into the lower devices to obtain the first port's parent ID.
> 
> Convert the bridge, core and ipv4 multicast routing code to check for
> such ndo_get_port_parent_id() and call the helper function when valid
> before falling back to switchdev_port_attr_get(). This will allow us to
> convert all relevant drivers in one go instead of having to implement
> both switchdev_port_attr_get() and ndo_get_port_parent_id() operations,
> then get rid of switchdev_port_attr_get().
> 
> Acked-by: Jiri Pirko <jiri@xxxxxxxxxxxx>
> Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>

Reviewed-by: Ido Schimmel <idosch@xxxxxxxxxxxx>




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