canfd: add support for CAN FD in CAN_RAW sockets

- introduce a new sockopt CAN_RAW_FD_FRAMES to allow CAN FD frames
- handle CAN frames and CAN FD frames simultaneously when enabled

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/linux/can/raw.h b/include/linux/can/raw.h
index 781f3a3701be..a814062b0719 100644
--- a/include/linux/can/raw.h
+++ b/include/linux/can/raw.h
@@ -23,7 +23,8 @@ enum {
         CAN_RAW_FILTER = 1,     /* set 0 .. n can_filter(s)          */
         CAN_RAW_ERR_FILTER,     /* set filter for error frames       */
         CAN_RAW_LOOPBACK,       /* local loopback (default:on)       */
-        CAN_RAW_RECV_OWN_MSGS   /* receive my own msgs (default:off) */
+        CAN_RAW_RECV_OWN_MSGS,  /* receive my own msgs (default:off) */
+        CAN_RAW_FD_FRAMES,      /* allow CAN FD frames (default:off) */
 };
 
 #endif