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From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
Date: Fri, 29 Mar 2024 13:08:53 +0100
Subject: [PATCH net 2/2] selftests: mptcp: join: fix dev in check_endpoint
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Message-Id: <20240329-upstream-net-20240329-fallback-mib-v1-2-324a8981da48@kernel.org>
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To: mptcp@lists.linux.dev, Mat Martineau <martineau@kernel.org>, 
 Geliang Tang <geliang@kernel.org>, "David S. Miller" <davem@davemloft.net>, 
 Eric Dumazet <edumazet@google.com>, Jakub Kicinski <kuba@kernel.org>, 
 Paolo Abeni <pabeni@redhat.com>, Shuah Khan <shuah@kernel.org>, 
 Florian Westphal <fw@strlen.de>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, 
 linux-kselftest@vger.kernel.org, 
 "Matthieu Baerts (NGI0)" <matttbe@kernel.org>, 
 Geliang Tang <tanggeliang@kylinos.cn>, stable@vger.kernel.org

From: Geliang Tang <tanggeliang@kylinos.cn>

There's a bug in pm_nl_check_endpoint(), 'dev' didn't be parsed correctly.
If calling it in the 2nd test of endpoint_tests() too, it fails with an
error like this:

 creation  [FAIL] expected '10.0.2.2 id 2 subflow dev dev' \
                     found '10.0.2.2 id 2 subflow dev ns2eth2'

The reason is '$2' should be set to 'dev', not '$1'. This patch fixes it.

Fixes: 69c6ce7b6eca ("selftests: mptcp: add implicit endpoint test case")
Cc: stable@vger.kernel.org
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
---
 tools/testing/selftests/net/mptcp/mptcp_join.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index 5e9211e89825..e4403236f655 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -729,7 +729,7 @@ pm_nl_check_endpoint()
 			[ -n "$_flags" ]; flags="flags $_flags"
 			shift
 		elif [ $1 = "dev" ]; then
-			[ -n "$2" ]; dev="dev $1"
+			[ -n "$2" ]; dev="dev $2"
 			shift
 		elif [ $1 = "id" ]; then
 			_id=$2
@@ -3610,6 +3610,8 @@ endpoint_tests()
 		local tests_pid=$!
 
 		wait_mpj $ns2
+		pm_nl_check_endpoint "creation" \
+			$ns2 10.0.2.2 id 2 flags subflow dev ns2eth2
 		chk_subflow_nr "before delete" 2
 		chk_mptcp_info subflows 1 subflows 1
 

-- 
2.43.0