[PATCH mptcp-net 0/4] mptcp: locking cleanup

[Paolo Abeni <pabeni@redhat.com>]

This is a preparatory work for the TCP_NOTSENT_LOWAT support. The latter
will need tracking more state under the msk data lock.

Since the locking msk locking schema is already quite complex, do a long
awaited clean-up step, moving several confusing lockless initialization
under the relevant locks.

Note that patches 2-4 carry fixes tag, and could target the net tree,
but AFACIS no real race could really happen even prior to such patches
as the MPTCP-level state machine implicitly ensure proper serialization
of the write accesses, even lacking explicit lock.

Patch 1 has no fixes, but still is logically tied to the other patches.
Possibly we could target net-next for the whole series.

Paolo Abeni (4):
  mptcp: drop the push_pending field
  mptcp: fix rcv space initialization
  mptcp: fix more tx path fields initialization
  mptcp: corner case locking for rx path fields initialization

 net/mptcp/fastopen.c |  6 ++--
 net/mptcp/options.c  |  9 +++---
 net/mptcp/protocol.c | 31 ++++++++++---------
 net/mptcp/protocol.h | 13 ++++----
 net/mptcp/subflow.c  | 71 +++++++++++++++++++++++++++-----------------
 5 files changed, 75 insertions(+), 55 deletions(-)

-- 
2.43.0