[PATCH net-next 0/3] net: mctp: improvements for NULL-EID addressing

[Jeremy Kerr <jk@codeconstruct.com.au>]

Currently, our focus for the MCTP routing implementation has been for
MCTP bus-owner devices. In this case, we will generally have an EID
assigned during local transmit, and have routes established before
expecting to receive.

We also want to handle non-bus-owner cases, where:

 - we may need to send control protocol messages (like Discovery Notify)
   before any local addresses have been assigned, particularly as part
   of acquiring a local address assignment; and

 - we will likely want to receive incoming messages before we have
   routing established.

This series improves handling for these cases, by handling NULL EIDs
as source / destination addresses where possible.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
---
Jeremy Kerr (3):
      net: mctp: perform source address lookups when we populate our dst
      net: mctp: allow local TX with no address assigned
      net: mctp: don't require a route for null-EID ingress

 include/net/mctp.h         |   1 +
 net/mctp/route.c           |  92 +++++++++++------------
 net/mctp/test/route-test.c | 180 ++++++++++++++++++++++++++++++++++++++++++---
 net/mctp/test/utils.c      |  27 +++++++
 net/mctp/test/utils.h      |   1 +
 5 files changed, 242 insertions(+), 59 deletions(-)
---
base-commit: 7fae6616704a17c64438ad4b73a6effa6c03ffda
change-id: 20260324-dev-mctp-null-eids-0515711235ee

Best regards,
-- 
Jeremy Kerr <jk@codeconstruct.com.au>