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Message-ID: <86b7155-839d-381e-4927-dd607366c7e6@linux.intel.com>
Date:   Tue, 5 Jul 2022 11:54:00 -0700 (PDT)
From:   Mat Martineau <mathew.j.martineau@...ux.intel.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
cc:     Matthieu Baerts <matthieu.baerts@...sares.net>,
        Sasha Levin <sashal@...nel.org>, stable@...r.kernel.org,
        Paolo Abeni <pabeni@...hat.com>,
        Geliang Tang <geliangtang@...il.com>,
        Jakub Kicinski <kuba@...nel.org>, linux-kernel@...r.kernel.org,
        MPTCP Upstream <mptcp@...ts.linux.dev>
Subject: Re: [PATCH 5.10 51/84] selftests: mptcp: add ADD_ADDR timeout test
 case

On Tue, 5 Jul 2022, Greg Kroah-Hartman wrote:

> On Tue, Jul 05, 2022 at 05:59:22PM +0200, Matthieu Baerts wrote:
>> Hi Greg, Sasha,
>>
>> (+ MPTCP upstream ML)
>>
>> First, thank you again for maintaining the stable branches!
>>
>> On 05/07/2022 13:58, Greg Kroah-Hartman wrote:
>>> From: Geliang Tang <geliangtang@...il.com>
>>>
>>> [ Upstream commit 8d014eaa9254a9b8e0841df40dd36782b451579a ]
>>>
>>> This patch added the test case for retransmitting ADD_ADDR when timeout
>>> occurs. It set NS1's add_addr_timeout to 1 second, and drop NS2's ADD_ADDR
>>> echo packets.
>> TL;DR: Could it be possible to drop all selftests MPTCP patches from
>> v5.10 queue please?
>>
>>
>> I was initially reacting on this patch because it looks like it depends on:
>>
>>   93f323b9cccc ("mptcp: add a new sysctl add_addr_timeout")
>>
>> and indirectly to:
>>
>>   9ce7deff92e8 ("docs: networking: mptcp: Add MPTCP sysctl entries")
>>
>> to have "net.mptcp.add_addr_timeout" sysctl knob needed for this new
>> selftest.
>>
>> But then I tried to understand why this current patch ("selftests:
>> mptcp: add ADD_ADDR timeout test case") has been selected for 5.10. I
>> guess it was to ease the backport of another one, right?
>> Looking at the 'series' file in 5.10 queue, it seems the new
>> "selftests-mptcp-more-stable-diag-tests" patch requires 5 other patches:
>>
>> -> selftests-mptcp-more-stable-diag-tests.patch
>>  -> selftests-mptcp-fix-diag-instability.patch
>>   -> selftests-mptcp-launch-mptcp_connect-with-timeout.patch
>>    -> selftests-mptcp-add-add_addr-ipv6-test-cases.patch
>>     -> selftests-mptcp-add-link-failure-test-case.patch
>>      -> selftests-mptcp-add-add_addr-timeout-test-case.patch
>>
>>
>> When looking at these patches in more detail, it looks like "selftests:
>> mptcp: add ADD_ADDR IPv6 test cases" depends on a new feature only
>> available from v5.11: ADD_ADDR for IPv6.
>>
>>
>> Could it be possible to drop all these patches from v5.10 then please?
>
> Sure, but leave them in for 5.15.y and 5.18.y?
>

Hi Greg -

I'm the other MPTCP maintainer, jumping in here due to Matt's time zone.

Yes: leave selftests-mptcp-more-stable-diag-tests.patch in 5.15.y and 
5.18.y

--
Mat Martineau
Intel

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