linux-kernel - [PATCH net 0/4] mptcp: various rare sending issues

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Message-Id: <20251028-net-mptcp-send-timeout-v1-0-38ffff5a9ec8@kernel.org>
Date: Tue, 28 Oct 2025 09:16:51 +0100
From: "Matthieu Baerts (NGI0)" <matttbe@...nel.org>
To: Mat Martineau <martineau@...nel.org>, Geliang Tang <geliang@...nel.org>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Simon Horman <horms@...nel.org>, Florian Westphal <fw@...len.de>, 
 Yonglong Li <liyonglong@...natelecom.cn>
Cc: netdev@...r.kernel.org, mptcp@...ts.linux.dev, 
 linux-kernel@...r.kernel.org, "Matthieu Baerts (NGI0)" <matttbe@...nel.org>, 
 stable@...r.kernel.org
Subject: [PATCH net 0/4] mptcp: various rare sending issues

Here are various fixes from Paolo, addressing very occasional issues on
the sending side:

- Patch 1: drop an optimisation that could lead to timeout in case of
  race conditions. A fix for up to v5.11.

- Patch 2: fix stream corruption under very specific conditions. A fix
  for up to v5.13.

- Patch 3: restore MPTCP-level zero window probe after a recent fix. A
  fix for up to v5.16.

- Patch 4: new MIB counter to track MPTCP-level zero windows probe to
  help catching issues similar to the one fixed by the previous patch.

Signed-off-by: Matthieu Baerts (NGI0) <matttbe@...nel.org>
---
Paolo Abeni (4):
      mptcp: drop bogus optimization in __mptcp_check_push()
      mptcp: fix MSG_PEEK stream corruption
      mptcp: restore window probe
      mptcp: zero window probe mib

 net/mptcp/mib.c      |  1 +
 net/mptcp/mib.h      |  1 +
 net/mptcp/protocol.c | 57 +++++++++++++++++++++++++++++++++-------------------
 net/mptcp/protocol.h |  2 +-
 4 files changed, 39 insertions(+), 22 deletions(-)
---
base-commit: 210b35d6a7ea415494ce75490c4b43b4e717d935
change-id: 20251027-net-mptcp-send-timeout-7fc1474fd849

Best regards,
-- 
Matthieu Baerts (NGI0) <matttbe@...nel.org>