• Oliver Hartkopp's avatar
    can: bcm: add support for CAN FD frames · 6f3b911d
    Oliver Hartkopp authored
    The programming API of the CAN_BCM depends on struct can_frame which is
    given as array directly behind the bcm_msg_head structure. To follow this
    schema for the CAN FD frames a new flag 'CAN_FD_FRAME' in the bcm_msg_head
    flags indicates that the concatenated CAN frame structures behind the
    bcm_msg_head are defined as struct canfd_frame.
    
    This patch adds the support to handle CAN and CAN FD frames on a per BCM-op
    base. Main changes:
    
    - generally use struct canfd_frames instead if struct can_frames
    - use canfd_frame.flags instead of can_frame.can_dlc for private BCM flags
    - make all CAN frame sizes depending on the new CAN_FD_FRAME flags
    - separate between CAN and CAN FD when sending/receiving frames
    
    Due to the dependence of the CAN_FD_FRAME flag the former binary interface
    for classic CAN frames remains stable.
    Signed-off-by: default avatarOliver Hartkopp <socketcan@hartkopp.net>
    Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
    6f3b911d
bcm.h 3.94 KB