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MCTP tag control interface

From:  Jeremy Kerr <jk-AT-codeconstruct.com.au>
To:  netdev-AT-vger.kernel.org
Subject:  [PATCH net-next 0/5] MCTP tag control interface
Date:  Tue, 08 Feb 2022 17:46:12 +0800
Message-ID:  <20220208094617.3675511-1-jk@codeconstruct.com.au>
Cc:  Matt Johnston <matt-AT-codeconstruct.com.au>, "David S. Miller" <davem-AT-davemloft.net>, Jakub Kicinski <kuba-AT-kernel.org>, Jonathan Corbet <corbet-AT-lwn.net>, Steven Rostedt <rostedt-AT-goodmis.org>, Ingo Molnar <mingo-AT-redhat.com>, linux-doc-AT-vger.kernel.org
Archive-link:  Article

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(-)

-- 
2.34.1



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