netdev - [PATCH net-next 0/5] mptcp: Optimize received options handling

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Message-Id: <20210827004455.286754-1-mathew.j.martineau@linux.intel.com>
Date:   Thu, 26 Aug 2021 17:44:49 -0700
From:   Mat Martineau <mathew.j.martineau@...ux.intel.com>
To:     netdev@...r.kernel.org
Cc:     Mat Martineau <mathew.j.martineau@...ux.intel.com>,
        davem@...emloft.net, kuba@...nel.org, matthieu.baerts@...sares.net,
        mptcp@...ts.linux.dev, pabeni@...hat.com
Subject: [PATCH net-next 0/5] mptcp: Optimize received options handling

These patches optimize received MPTCP option handling in terms of both
storage and fewer conditionals to evaluate in common cases, and also add
a couple of cleanup patches.

Patches 1 and 5 do some cleanup in checksum option parsing and
clarification of lock handling.

Patches 2 and 3 rearrange struct mptcp_options_received to shrink it
slightly and consolidate frequently used fields in the same cache line.

Patch 4 optimizes incoming MPTCP option parsing to skip many extra
comparisons in the common case where only a DSS option is present.

Paolo Abeni (5):
  mptcp: do not set unconditionally csum_reqd on incoming opt
  mptcp: better binary layout for mptcp_options_received
  mptcp: consolidate in_opt sub-options fields in a bitmask
  mptcp: optimize the input options processing
  mptcp: make the locking tx schema more readable

 net/mptcp/options.c  | 141 +++++++++++++++++++------------------------
 net/mptcp/protocol.c |  14 +++--
 net/mptcp/protocol.h |  36 ++++++-----
 net/mptcp/subflow.c  |  40 ++++++------
 4 files changed, 112 insertions(+), 119 deletions(-)

base-commit: deecae7d96843fceebae06445b3f4bf8cceca31a
-- 
2.33.0