1 files changed, 24 insertions, 0 deletions
diff --git a/src/plugins/canbus/socketcan/socketcanbackend.h b/src/plugins/canbus/socketcan/socketcanbackend.h
index 0497244..b6cb5ef 100644
--- a/src/plugins/canbus/socketcan/socketcanbackend.h
+++ b/src/plugins/canbus/socketcan/socketcanbackend.h
@@ -54,6 +54,30 @@
 
 #include <memory>
 
+#ifndef CANFD_MTU
+// CAN FD support was added by Linux kernel 3.6
+// For prior kernels we redefine the missing defines here
+// they are taken from linux/can/raw.h & linux/can.h
+
+enum {
+    CAN_RAW_FD_FRAMES = 5
+};
+
+#define CAN_MAX_DLEN 8
+#define CANFD_MAX_DLEN 64
+struct canfd_frame {
+    canid_t can_id;  /* 32 bit CAN_ID + EFF/RTR/ERR flags */
+    __u8    len;     /* frame payload length in byte */
+    __u8    flags;   /* additional flags for CAN FD */
+    __u8    __res0;  /* reserved / padding */
+    __u8    __res1;  /* reserved / padding */
+    __u8    data[CANFD_MAX_DLEN] __attribute__((aligned(8)));
+};
+#define CAN_MTU     (sizeof(struct can_frame))
+#define CANFD_MTU   (sizeof(struct canfd_frame))
+
+#endif
+
 QT_BEGIN_NAMESPACE
 
 class LibSocketCan;