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description: >
Describe an MCTP endpoint. It is an MCTP communication terminus. An MCTP
endpoint is a terminus or origin of MCTP packets or messages. The combined
functionality within a physical device that communicates using the MCTP
transport protocol and handles MCTP control commands. This includes
MCTP-capable management controllers and managed devices.
properties:
- name: NetworkId
type: size
description: >
A locally defined identifier to distinguish each independent MCTP
network within a platform. The network IDs are used by the MCTP stack
to index separate MCTP Networks. This along with EID is used by upper
layer protocols to address the destination endpoint.
- name: EID
type: size
description: >
The logical address used to route MCTP messages to a specific MCTP
endpoint. A numeric handle (logical address) that uniquely identifies
a particular MCTP endpoint within a system for MCTP communication and
message routing purposes. Endpoint IDs are unique among MCTP
endpoints that comprise an MCTP communication network within a
system. MCTP EIDs are only unique within a particular MCTP network.
That is, they can be duplicated or overlap from one MCTP network to
the next. This is also referred to as "endpoint ID" and abbreviated
as "EID".
- name: SupportedMessageTypes
type: array[byte]
description: >
List of MCTP message types supported by the MCTP endpoint. MCTP
message type is an enumeration that identifies the type of the
communication payload in an MCTP message. The well defined message
types are MCTP Control(0x00), PLDM(0x01), NC-SI over MCTP(0x02),
Ethernet over MCTP(0x03), NVM Express Management Messages over
MCTP(0x04) and SPDM over MCTP(0x05). There are ranges for vendor
defined message types. All the message types are specified in the
DSP0239 specification. A device that supports a given message type
may not support that message type equally across all buses that
connect to the device.