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

[Matthieu Baerts <matttbe@kernel.org>]

Hi Jakub,

On 30/09/2025 03:27, Jakub Kicinski wrote:
> 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

Thank you for this message! Our CI didn't spot this issue in the last 2
weeks. I see it happened again on NIPA (sorry for that, and thank you
for having ignored this selftest) so I guess it is not a coincidence,
I'm going to investigate this issue ASAP.

Cheers,
Matt
-- 
Sponsored by the NGI0 Core fund.