[net-next,0/5] MCTP tag control interface

Message

Jeremy Kerr Feb. 8, 2022, 9:46 a.m. UTC

This series implements a small interface for userspace-controlled
message tag allocation for the MCTP protocol. Rather than leaving the
kernel to allocate per-message tag values, userspace can explicitly
allocate (and release) message tags through two new ioctls:
SIOCMCTPALLOCTAG and SIOCMCTPDROPTAG.

In order to do this, we first introduce some minor changes to the tag
handling, including a couple of new tests for the route input paths.

As always, any comments/queries/etc are most welcome.

Cheers,


Jeremy

---

Jeremy Kerr (4):
  mctp: tests: Rename FL_T macro to FL_TO
  mctp: tests: Add key state tests
  mctp: Add helper for address match checking
  mctp: Allow keys matching any local address

Matt Johnston (1):
  mctp: Add SIOCMCTP{ALLOC,DROP}TAG ioctls for tag control

 Documentation/networking/mctp.rst |  48 ++++++++
 include/net/mctp.h                |  16 ++-
 include/trace/events/mctp.h       |   5 +-
 include/uapi/linux/mctp.h         |  18 +++
 net/mctp/af_mctp.c                | 185 +++++++++++++++++++++++++-----
 net/mctp/route.c                  | 124 ++++++++++++++------
 net/mctp/test/route-test.c        | 158 ++++++++++++++++++++++++-
 7 files changed, 486 insertions(+), 68 deletions(-)