candump/lib: make sprint_canframe CAN XL aware

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>

lib.h

@@ -46,6 +46,7 @@
 #define CAN_UTILS_LIB_H
 
 #include <stdint.h>
+#include <stddef.h>
 #include <stdio.h>
 
 #ifdef DEBUG
@@ -55,6 +56,13 @@ __attribute__((format (printf, 1, 2)))
 static inline int pr_debug(const char* fmt, ...) {return 0;}
 #endif
 
+/* CAN CC/FD/XL frame union */
+typedef union {
+	struct can_frame cc;
+	struct canfd_frame fd;
+	struct canxl_frame xl;
+} cu_t;
+
 /* buffer sizes for CAN frame string representations */
 
 #define CL_ID (sizeof("12345678##1"))
@@ -160,7 +168,7 @@ int parse_canframe(char *cs, struct canfd_frame *cf);
  * - CAN FD frames do not have a RTR bit
  */
 
-int sprint_canframe(char *buf , struct canfd_frame *cf, int sep);
+int sprint_canframe(char *buf , cu_t *cu, int sep);
 /*
  * Creates a CAN frame hexadecimal output in compact format.
  * The CAN data[] is separated by '.' when sep != 0.