Add ALLOCATE_ENDPOINT_ID control message structures

Add MCTP control message structures for the ALLOCATE_ENDPOINT_ID command to support bridge endpoint EID pool allocation.

- Add mctp_ctrl_cmd_alloc_eid request/response structure

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

Author: faizana-nvidia

src/mctp-control-spec.h

@@ -181,6 +181,28 @@ struct mctp_ctrl_resp_resolve_endpoint_id {
 	// ... uint8_t physical_address[N]
 } __attribute__((__packed__));
 
+typedef enum {
+	mctp_ctrl_cmd_alloc_eid_alloc_eid = 0,
+	mctp_ctrl_cmd_alloc_eid_force_alloc = 1,
+	mctp_ctrl_cmd_alloc_eid_get_alloc_info = 2,
+	mctp_ctrl_cmd_alloc_eid_reserved = 3
+} mctp_ctrl_cmd_alloc_eid_op;
+
+struct mctp_ctrl_cmd_alloc_eid {
+	struct mctp_ctrl_msg_hdr ctrl_hdr;
+	uint8_t alloc_eid_op;
+	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;
+	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)
 #define MCTP_CTRL_HDR_FLAG_DGRAM (1 << 6)