• Marc Kleine-Budde's avatar
    can: introduce CAN midlayer private and allocate it automatically · ffd956ee
    Marc Kleine-Budde authored
    
    
    This patch introduces the CAN midlayer private structure ("struct
    can_ml_priv") which should be used to hold protocol specific per device
    data structures. For now it's only member is "struct can_dev_rcv_lists".
    
    The CAN midlayer private is allocated via alloc_netdev()'s private and
    assigned to "struct net_device::ml_priv" during device creation. This is
    done transparently for CAN drivers using alloc_candev(). The slcan, vcan
    and vxcan drivers which are not using alloc_candev() have been adopted
    manually. The memory layout of the netdev_priv allocated via
    alloc_candev() will looke like this:
    
      +-------------------------+
      | driver's priv           |
      +-------------------------+
      | struct can_ml_priv      |
      +-------------------------+
      | array of struct sk_buff |
      +-------------------------+
    
    Signed-off-by: default avatarOleksij Rempel <o.rempel@pengutronix.de>
    Signed-off-by: default avatarOliver Hartkopp <socketcan@hartkopp.net>
    Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
    ffd956ee