core: Support transport control commands
This change introduces a control message request handler for MCTP
bindings. If a handler is provided, transport control messages will be
forwarded to the handler, otherwise they will be forwarded to the
default handler.
Change-Id: I62266d6bf2d512ec97759c0b8a3477c5e433d609
Signed-off-by: Wiktor Gołgowski <wiktor.golgowski@linux.intel.com>
[AJ: Split out general control message handler, formatting]
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
diff --git a/libmctp-cmds.h b/libmctp-cmds.h
new file mode 100644
index 0000000..b35fc08
--- /dev/null
+++ b/libmctp-cmds.h
@@ -0,0 +1,74 @@
+/* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later */
+#ifndef _LIBMCTP_CMDS_H
+#define _LIBMCTP_CMDS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "libmctp.h"
+
+/*
+ * Helper structs and functions for MCTP control messages.
+ * See DSP0236 v1.3.0 sec. 11 for reference.
+ */
+
+struct mctp_ctrl_msg_hdr {
+ uint8_t ic_msg_type;
+ uint8_t rq_dgram_inst;
+ uint8_t command_code;
+ uint8_t completion_code;
+};
+
+#define MCTP_CTRL_HDR_MSG_TYPE 0
+#define MCTP_CTRL_HDR_FLAG_REQUEST (1 << 7)
+#define MCTP_CTRL_HDR_FLAG_DGRAM (1 << 6)
+#define MCTP_CTRL_HDR_INSTANCE_ID_MASK 0x1F
+
+/*
+ * MCTP Control Command IDs
+ * See DSP0236 v1.3.0 Table 12.
+ */
+#define MCTP_CTRL_CMD_RESERVED 0x00
+#define MCTP_CTRL_CMD_SET_ENDPOINT_ID 0x01
+#define MCTP_CTRL_CMD_GET_ENDPOINT_ID 0x02
+#define MCTP_CTRL_CMD_GET_ENDPOINT_UUID 0x03
+#define MCTP_CTRL_CMD_GET_VERSION_SUPPORT 0x04
+#define MCTP_CTRL_CMD_GET_MESSAGE_TYPE_SUPPORT 0x05
+#define MCTP_CTRL_CMD_GET_VENDOR_MESSAGE_SUPPORT 0x06
+#define MCTP_CTRL_CMD_RESOLVE_ENDPOINT_ID 0x07
+#define MCTP_CTRL_CMD_ALLOCATE_ENDPOINT_IDS 0x08
+#define MCTP_CTRL_CMD_ROUTING_INFO_UPDATE 0x09
+#define MCTP_CTRL_CMD_GET_ROUTING_TABLE_ENTRIES 0x0A
+#define MCTP_CTRL_CMD_PREPARE_ENDPOINT_DISCOVERY 0x0B
+#define MCTP_CTRL_CMD_ENDPOINT_DISCOVERY 0x0C
+#define MCTP_CTRL_CMD_DISCOVERY_NOTIFY 0x0D
+#define MCTP_CTRL_CMD_GET_NETWORK_ID 0x0E
+#define MCTP_CTRL_CMD_QUERY_HOP 0x0F
+#define MCTP_CTRL_CMD_RESOLVE_UUID 0x10
+#define MCTP_CTRL_CMD_QUERY_RATE_LIMIT 0x11
+#define MCTP_CTRL_CMD_REQUEST_TX_RATE_LIMIT 0x12
+#define MCTP_CTRL_CMD_UPDATE_RATE_LIMIT 0x13
+#define MCTP_CTRL_CMD_QUERY_SUPPORTED_INTERFACES 0x14
+#define MCTP_CTRL_CMD_MAX 0x15
+/* 0xF0 - 0xFF are transport specific */
+#define MCTP_CTRL_CMD_FIRST_TRANSPORT 0xF0
+#define MCTP_CTRL_CMD_LAST_TRANSPORT 0xFF
+
+/*
+ * MCTP Control Completion Codes
+ * See DSP0236 v1.3.0 Table 13.
+ */
+#define MCTP_CTRL_CC_SUCCESS 0x00
+#define MCTP_CTRL_CC_ERROR 0x01
+#define MCTP_CTRL_CC_ERROR_INVALID_DATA 0x02
+#define MCTP_CTRL_CC_ERROR_INVALID_LENGTH 0x03
+#define MCTP_CTRL_CC_ERROR_NOT_READY 0x04
+#define MCTP_CTRL_CC_ERROR_UNSUPPORTED_CMD 0x05
+/* 0x80 - 0xFF are command specific */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _LIBMCTP_CMDS_H */