tree c9830be92fde6a648fe956768979b62aa96f1485
parent d4772f58d50b301ede9aab5bbc6d43a5e421c7a2
author Anthony Rocha <anthony.rocha@amd.com> 1775691123 -0700
committer Anthony Rocha <anthony.rocha@amd.com> 1775989719 -0700

mctp-api: add Stack facade and update mctp_echo to use high-level traits

- Add services/mctp/api/src/stack.rs: Stack<C: MctpClient> facade that
  wraps any MctpClient and returns StackListener, StackReqChannel and
  StackRespChannel implementing the MctpListener / MctpReqChannel /
  MctpRespChannel traits. All channel types release server handles on Drop.

- Update services/mctp/api/src/lib.rs: expose stack module and re-export
  Stack, StackListener, StackReqChannel, StackRespChannel.

- Update target/ast1060-evb/mctp/mctp_echo.rs: replace direct MctpClient
  calls with Stack::new(IpcMctpClient) + MctpListener / MctpRespChannel
  traits, matching the Hubris mctp-echo task structure.

- Update services/mctp/server/tests/integration.rs: add Stack facade tests
  exercising echo-via-Stack and req/resp roundtrip using DirectClient as
  the MctpClient strategy.

- Update services/mctp/api/README.md: document the two-layer abstraction,
  Stack API, Strategy pattern, and wire protocol.