[CAN]: Add broadcast manager (bcm) protocol

This patch adds the CAN broadcast manager (bcm) protocol.

Signed-off-by: Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
Signed-off-by: Urs Thuermann <urs.thuermann@volkswagen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 65 insertions, 0 deletions

diff --git a/include/linux/can/bcm.h b/include/linux/can/bcm.h
new file mode 100644
index 000000000000..7ade33a0ff03
--- /dev/null
+++ b/include/linux/can/bcm.h
@@ -0,0 +1,65 @@
+/*
+ * linux/can/bcm.h
+ *
+ * Definitions for CAN Broadcast Manager (BCM)
+ *
+ * Author: Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
+ * Copyright (c) 2002-2007 Volkswagen Group Electronic Research
+ * All rights reserved.
+ *
+ * Send feedback to <socketcan-users@lists.berlios.de>
+ *
+ */
+
+#ifndef CAN_BCM_H
+#define CAN_BCM_H
+
+/**
+ * struct bcm_msg_head - head of messages to/from the broadcast manager
+ * @opcode:    opcode, see enum below.
+ * @flags:     special flags, see below.
+ * @count:     number of frames to send before changing interval.
+ * @ival1:     interval for the first @count frames.
+ * @ival2:     interval for the following frames.
+ * @can_id:    CAN ID of frames to be sent or received.
+ * @nframes:   number of frames appended to the message head.
+ * @frames:    array of CAN frames.
+ */
+struct bcm_msg_head {
+        int opcode;
+        int flags;
+        int count;
+        struct timeval ival1, ival2;
+        canid_t can_id;
+        int nframes;
+        struct can_frame frames[0];
+};
+
+enum {
+        TX_SETUP = 1,   /* create (cyclic) transmission task */
+        TX_DELETE,      /* remove (cyclic) transmission task */
+        TX_READ,        /* read properties of (cyclic) transmission task */
+        TX_SEND,        /* send one CAN frame */
+        RX_SETUP,       /* create RX content filter subscription */
+        RX_DELETE,      /* remove RX content filter subscription */
+        RX_READ,        /* read properties of RX content filter subscription */
+        TX_STATUS,      /* reply to TX_READ request */
+        TX_EXPIRED,     /* notification on performed transmissions (count=0) */
+        RX_STATUS,      /* reply to RX_READ request */
+        RX_TIMEOUT,     /* cyclic message is absent */
+        RX_CHANGED      /* updated CAN frame (detected content change) */
+};
+
+#define SETTIMER            0x0001
+#define STARTTIMER          0x0002
+#define TX_COUNTEVT         0x0004
+#define TX_ANNOUNCE         0x0008
+#define TX_CP_CAN_ID        0x0010
+#define RX_FILTER_ID        0x0020
+#define RX_CHECK_DLC        0x0040
+#define RX_NO_AUTOTIMER     0x0080
+#define RX_ANNOUNCE_RESUME  0x0100
+#define TX_RESET_MULTI_IDX  0x0200
+#define RX_RTR_FRAME        0x0400
+
+#endif /* CAN_BCM_H */