+/**
+ * struct canfilt_t - structure for acceptance filter setup
+ * @flags: message flags
+ * %MSG_RTR .. message is Remote Transmission Request,
+ * %MSG_EXT .. message with extended ID,
+ * %MSG_OVR .. indication of queue overflow condition,
+ * %MSG_LOCAL .. message originates from this node.
+ * there are corresponding mask bits
+ * %MSG_RTR_MASK, %MSG_EXT_MASK, %MSG_LOCAL_MASK.
+ * %MSG_PROCESSLOCAL enables local messages processing in the
+ * combination with global setting
+ * @queid: CAN queue identification in the case of the multiple
+ * queues per one user (open instance)
+ * @cob: communication object number (not used)
+ * @id: selected required value of cared ID id bits
+ * @mask: select bits significand for the comparation;
+ * 1 .. take care about corresponding ID bit, 0 .. don't care
+ *
+ * Header: can.h
+ */
+struct canfilt_t {
+ int flags;
+ int queid;
+ int cob;
+ unsigned long id;
+ unsigned long mask;
+};
+
+/* Definitions to use for canmsg_t and canfilt_t flags */
+#define MSG_RTR (1<<0)
+#define MSG_OVR (1<<1)
+#define MSG_EXT (1<<2)
+#define MSG_LOCAL (1<<3)
+/* If you change above lines, check canque_filtid2internal function */
+
+/* Additional definitions used for canfilt_t only */
+#define MSG_FILT_MASK_SHIFT 8
+#define MSG_RTR_MASK (MSG_RTR<<MSG_FILT_MASK_SHIFT)
+#define MSG_EXT_MASK (MSG_EXT<<MSG_FILT_MASK_SHIFT)
+#define MSG_LOCAL_MASK (MSG_LOCAL<<MSG_FILT_MASK_SHIFT)
+#define MSG_PROCESSLOCAL (MSG_OVR<<MSG_FILT_MASK_SHIFT)
+
+
+/* Can message ID mask */
+#define MSG_ID_MASK ((1l<<29)-1)