modify before we forward

Author: geohot

board/drivers/can.h

@@ -415,6 +415,9 @@ void can_rx(uint8_t can_number) {
     to_push.RDLR = CAN->sFIFOMailBox[0].RDLR;
     to_push.RDHR = CAN->sFIFOMailBox[0].RDHR;
 
+    // modify RDTR for our API
+    to_push.RDTR = (to_push.RDTR & 0xFFFF000F) | (bus_number << 4);
+
     // forwarding (panda only)
     #ifdef PANDA
       int bus_fwd_num = can_forwarding[bus_number] != -1 ? can_forwarding[bus_number] : safety_fwd_hook(bus_number, &to_push);
@@ -428,8 +431,6 @@ void can_rx(uint8_t can_number) {
       }
     #endif
 
-    // modify RDTR for our API
-    to_push.RDTR = (to_push.RDTR & 0xFFFF000F) | (bus_number << 4);
     safety_rx_hook(&to_push);
 
     #ifdef PANDA