mctp

Management Component Transport Protocol (MCTP) support

This crate provides a set of generic types and traits for MCTP support in Rust. It provides:

• a few base types (Eid, Tag, MsgType) to match MCTP protocol definitions,

• a MctpEndpoint trait, to abstract communication implementation details; and

• some support types (MctpError, Result) for the MctpEndpoint trait.

There are two typical interfaces to the crate:

• Transport implementations: code that provides implementations of the MctpEndpoint trait. These interface to hardware (either directly, in embedded environments, or through an operating system interface), and provide the base message send/receive functions

• Application implementations: code that uses makes use of the MctpEndpoint trait, in order to provide some MCTP-based functionality.

API status

While this is fairly early prototype code, there are a couple of uses "in the field" to help validate the API conventions. While we don't expect much API breakage in future, there may be reworks coming.

Any API changes will be appropriately versioned.

Future items

• Some uses may need the type and IC bit to be returned from Endpoint::recv(), in order to correctly process messages in situations where the protocol allows different IC states, or multiple protocols are received on one Endpoint object. In this case, we may want a richer version of recv, returning the IC and type values.