• Florian Fainelli's avatar
    net: Introduce ndo_get_port_parent_id() · d6abc596
    Florian Fainelli authored
    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: default avatarJiri Pirko <jiri@mellanox.com>
    Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
    Reviewed-by: default avatarIdo Schimmel <idosch@mellanox.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    d6abc596
ipmr.c 75.7 KB