These helpers can prevent errors and code duplication when setting up a
CAN error frame.
Signed-off-by: Dario Binacchi <dario.binacchi@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/can/dev.h | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h
index 0977656b366d..0202526be6b0 100644
--- a/include/linux/can/dev.h
+++ b/include/linux/can/dev.h
@@ -23,6 +23,33 @@
#include <linux/ethtool.h>
#include <linux/netdevice.h>
+#define CAN_FRAME_ERROR_INIT(cf) \
+ ((cf)->can_id |= CAN_ERR_PROT | CAN_ERR_BUSERROR)
+
+#define CAN_FRAME_SET_ERR_BIT0(cf) \
+ ((cf)->data[2] |= CAN_ERR_PROT_BIT0)
+
+#define CAN_FRAME_SET_ERR_BIT1(cf) \
+ ((cf)->data[2] |= CAN_ERR_PROT_BIT1)
+
+#define CAN_FRAME_SET_ERR_ACK(cf) \
+ do { \
+ ((cf)->can_id |= CAN_ERR_ACK); \
+ ((cf)->data[3] = CAN_ERR_PROT_LOC_ACK); \
+ } while (0)
+
+#define CAN_FRAME_SET_ERR_CRC(cf) \
+ do { \
+ ((cf)->data[2] |= CAN_ERR_PROT_BIT); \
+ ((cf)->data[3] = CAN_ERR_PROT_LOC_CRC_SEQ); \
+ } while (0)
+
+#define CAN_FRAME_SET_ERR_FORM(cf) \
+ ((cf)->data[2] |= CAN_ERR_PROT_FORM)
+
+#define CAN_FRAME_SET_ERR_STUFF(cf) \
+ ((cf)->data[2] |= CAN_ERR_PROT_STUFF)
+
/*
* CAN mode
*/
--
2.43.0
