linux-kernel - Re: [PATCH net 08/11] selftests: mptcp: join: endpoints: longer timeout

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Message-ID: <236d10dc597fbf5bf58c64190f7c34347f07dccc.camel@kernel.org>
Date: Tue, 18 Nov 2025 16:39:40 +0800
From: Geliang Tang <geliang@...nel.org>
To: "Matthieu Baerts (NGI0)" <matttbe@...nel.org>, Mat Martineau	
 <martineau@...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>, Shuah Khan	
 <shuah@...nel.org>, Florian Westphal <fw@...len.de>
Cc: netdev@...r.kernel.org, mptcp@...ts.linux.dev,
 linux-kernel@...r.kernel.org, 	linux-kselftest@...r.kernel.org,
 stable@...r.kernel.org
Subject: Re: [PATCH net 08/11] selftests: mptcp: join: endpoints: longer
 timeout

Hi Matt,

On Tue, 2025-11-18 at 08:20 +0100, Matthieu Baerts (NGI0) wrote:
> In rare cases, when the test environment is very slow, some endpoints
> tests can fail because some expected events have not been seen.
> 
> Because the tests are expecting a long on-going connection, and they
> are
> not waiting for the end of the transfer, it is fine to have a longer
> timeout, and even go over the default one. This connection will be
> killed at the end, after the verifications: increasing the timeout
> doesn't change anything, apart from avoiding it to end before the end
> of
> the verifications.
> 
> To play it safe, all endpoints tests not waiting for the end of the
> transfer are now having a longer timeout: 2 minutes.
> 
> The Fixes commit was making the connection longer, but still, the
> default timeout would have stopped it after 1 minute, which might not
> be
> enough in very slow environments.
> 
> Fixes: 6457595db987 ("selftests: mptcp: join: endpoints: longer
> transfer")
> Cc: stable@...r.kernel.org
> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@...nel.org>

This patch looks good to me.

Reviewed-by: Geliang Tang <geliang@...nel.org>

Thanks,
-Geliang

> ---
>  tools/testing/selftests/net/mptcp/mptcp_join.sh | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh
> b/tools/testing/selftests/net/mptcp/mptcp_join.sh
> index 303abbca59fc..93d38ded5e4e 100755
> --- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
> +++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
> @@ -3941,7 +3941,7 @@ endpoint_tests()
>  		pm_nl_set_limits $ns1 2 2
>  		pm_nl_set_limits $ns2 2 2
>  		pm_nl_add_endpoint $ns1 10.0.2.1 flags signal
> -		{ test_linkfail=128 speed=slow \
> +		{ timeout_test=120 test_linkfail=128 speed=slow \
>  			run_tests $ns1 $ns2 10.0.1.1 & } 2>/dev/null
>  		local tests_pid=$!
>  
> @@ -3968,7 +3968,7 @@ endpoint_tests()
>  		pm_nl_set_limits $ns2 0 3
>  		pm_nl_add_endpoint $ns2 10.0.1.2 id 1 dev ns2eth1
> flags subflow
>  		pm_nl_add_endpoint $ns2 10.0.2.2 id 2 dev ns2eth2
> flags subflow
> -		{ test_linkfail=128 speed=5 \
> +		{ timeout_test=120 test_linkfail=128 speed=5 \
>  			run_tests $ns1 $ns2 10.0.1.1 & } 2>/dev/null
>  		local tests_pid=$!
>  
> @@ -4046,7 +4046,7 @@ endpoint_tests()
>  		# broadcast IP: no packet for this address will be
> received on ns1
>  		pm_nl_add_endpoint $ns1 224.0.0.1 id 2 flags signal
>  		pm_nl_add_endpoint $ns1 10.0.1.1 id 42 flags signal
> -		{ test_linkfail=128 speed=5 \
> +		{ timeout_test=120 test_linkfail=128 speed=5 \
>  			run_tests $ns1 $ns2 10.0.1.1 & } 2>/dev/null
>  		local tests_pid=$!
>  
> @@ -4119,7 +4119,7 @@ endpoint_tests()
>  		# broadcast IP: no packet for this address will be
> received on ns1
>  		pm_nl_add_endpoint $ns1 224.0.0.1 id 2 flags signal
>  		pm_nl_add_endpoint $ns2 10.0.3.2 id 3 flags subflow
> -		{ test_linkfail=128 speed=20 \
> +		{ timeout_test=120 test_linkfail=128 speed=20 \
>  			run_tests $ns1 $ns2 10.0.1.1 & } 2>/dev/null
>  		local tests_pid=$!
>