Add mctp ALLOCATE_ENDPOINT_ID message structure

Signed-off-by: Faizan Ali <faizana@nvidia.com>

Author: faizana-nvidia

src/mctp-control-spec.h

@@ -175,6 +175,29 @@ struct mctp_ctrl_resp_resolve_endpoint_id {
 	// ... uint8_t physical_address[N]
 } __attribute__((__packed__));
 
+typedef enum {
+	alloc_eid = 0,
+	force_alloc = 1,
+	get_alloc_info = 2,
+	reserved = 3
+} mctp_ctrl_cmd_alloc_eid_op;
+
+struct mctp_ctrl_cmd_alloc_eid {
+	struct mctp_ctrl_msg_hdr ctrl_hdr;
+	mctp_ctrl_cmd_alloc_eid_op alloc_eid_op : 2;
+	uint8_t : 6;
+	uint8_t pool_size;
+	uint8_t start_eid;
+} __attribute__((__packed__));
+
+struct mctp_ctrl_resp_alloc_eid {
+	struct mctp_ctrl_msg_hdr ctrl_hdr;
+	uint8_t completion_code;
+	uint8_t status : 2;
+	uint8_t : 6;
+	uint8_t eid_pool_size;
+	uint8_t eid_set;
+} __attribute__((__packed__));
 
 #define MCTP_CTRL_HDR_MSG_TYPE 0
 #define MCTP_CTRL_HDR_FLAG_REQUEST (1 << 7)