drivers: can: loopback: check frame ID type and RTR bit in filters

Check the frame ID type and RTR bit when comparing loopback CAN frames
against installed RX filters.

Fixes: #47904

Signed-off-by: Henrik Brix Andersen <[email protected]>

Author: henrikbrixandersen

drivers/can/can_loopback.c

@@ -11,6 +11,9 @@
 #include "can_loopback.h"
 
 #include <logging/log.h>
+
+#include "can_utils.h"
+
 LOG_MODULE_DECLARE(can_driver, CONFIG_CAN_LOG_LEVEL);
 
 K_KERNEL_STACK_DEFINE(tx_thread_stack,
@@ -41,13 +44,6 @@ static void dispatch_frame(const struct zcan_frame *frame,
 	filter->rx_cb(&frame_tmp, filter->cb_arg);
 }
 
-static inline int check_filter_match(const struct zcan_frame *frame,
-				     const struct zcan_filter *filter)
-{
-	return ((filter->id & filter->id_mask) ==
-		(frame->id & filter->id_mask));
-}
-
 void tx_thread(void *data_arg, void *arg2, void *arg3)
 {
 	ARG_UNUSED(arg2);
@@ -63,7 +59,7 @@ void tx_thread(void *data_arg, void *arg2, void *arg3)
 		for (int i = 0; i < CONFIG_CAN_MAX_FILTER; i++) {
 			filter = &data->filters[i];
 			if (filter->rx_cb &&
-			    check_filter_match(&frame.frame, &filter->filter)) {
+			    can_utils_filter_match(&frame.frame, &filter->filter) != 0) {
 				dispatch_frame(&frame.frame, filter);
 			}
 		}