netdev - Re: [PATCH net-next 0/8] mptcp: receive path improvement

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Message-ID: <20250929182705.1583702f@kernel.org>
Date: Mon, 29 Sep 2025 18:27:05 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: "Matthieu Baerts (NGI0)" <matttbe@...nel.org>
Cc: Mat Martineau <martineau@...nel.org>, Geliang Tang <geliang@...nel.org>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet
 <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Simon Horman
 <horms@...nel.org>, Neal Cardwell <ncardwell@...gle.com>, Kuniyuki Iwashima
 <kuniyu@...gle.com>, David Ahern <dsahern@...nel.org>, Shuah Khan
 <shuah@...nel.org>, netdev@...r.kernel.org, mptcp@...ts.linux.dev,
 linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH net-next 0/8] mptcp: receive path improvement

On Sat, 27 Sep 2025 11:40:36 +0200 Matthieu Baerts (NGI0) wrote:
> This series includes several changes to the MPTCP RX path. The main
> goals are improving the RX performances, and increase the long term
> maintainability.
> 
> Some changes reflects recent(ish) improvements introduced in the TCP
> stack: patch 1, 2 and 3 are the MPTCP counter part of SKB deferral free
> and auto-tuning improvements. Note that patch 3 could possibly fix
> additional issues, and overall such patch should protect from similar
> issues to arise in the future.
> 
> Patches 4-7 are aimed at introducing the socket backlog usage which will
> be done in a later series to process the packets received by the
> different subflows while the msk socket is owned.
> 
> Patch 8 is not related to the RX path, but it contains additional tests
> for new features recently introduced in net-next.

Could be a coincidence but we got 3 simult_flows.sh flakes since this
was posted. Previous one was 20+ days ago:
https://netdev.bots.linux.dev/contest.html?ld_cnt=250&pw-pass=n&pass=0&test=simult-flows-sh