Converted more code to be easier to generalize to larger CAN payloads

for CAN-FD. Improved some code to be faster. Fixed up some compile
time warnings.

bus_protocols/isotp_message.h

@@ -3,21 +3,16 @@
 
 #include <Qt>
 #include <QVector>
+#include <can_structs.h>
 
-//the same as the CANFrame struct but with arbitrary data size.
-class ISOTP_MESSAGE
+//Now a child class of CANFrame. We just add the ability to track how long it was supposed to be and other
+//ISOTP related details. But, mostly just CANFrame.
+class ISOTP_MESSAGE : public CANFrame
 {
 public:
-    uint32_t ID;
-    int bus;
-    bool extended;
-    bool isReceived;
-    int len; //# of bytes this message should have (as reported)
-    int actualSize; //# we actually got
+    int reportedLength;
     int lastSequence;
     bool isMultiframe;
-    QVector<unsigned char> data;
-    uint64_t timestamp;
 };
 
 #endif // ISOTP_MESSAGE_H