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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Shuah Khan , Matthieu Baerts , Mat Martineau , Geliang Tang , Pablo Neira Ayuso , Jozsef Kadlecsik , Andrea Mayer , Paolo Lungaroni , linux-kselftest@vger.kernel.org, mptcp@lists.linux.dev, netfilter-devel@vger.kernel.org, coreteam@netfilter.org, Hangbin Liu Subject: [PATCH net-next 1/6] selftests: net: disable rp_filter after namespace initialization Date: Wed, 7 May 2025 13:18:51 +0000 Message-ID: <20250507131856.78393-2-liuhangbin@gmail.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20250507131856.78393-1-liuhangbin@gmail.com> References: <20250507131856.78393-1-liuhangbin@gmail.com> Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Some distributions enable rp_filter globally by default. To ensure consiste= nt behavior across environments, we explicitly disable it in several test case= s. This patch moves the rp_filter disabling logic to immediately after the network namespace is initialized. With this change, individual test cases with creating namespace via setup_ns no longer need to disable rp_filter again. This helps avoid redundancy and ensures test consistency. Signed-off-by: Hangbin Liu --- tools/testing/selftests/net/lib.sh | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tools/testing/selftests/net/lib.sh b/tools/testing/selftests/n= et/lib.sh index 7e1e56318625..7962da06f816 100644 --- a/tools/testing/selftests/net/lib.sh +++ b/tools/testing/selftests/net/lib.sh @@ -217,6 +217,8 @@ setup_ns() return $ksft_skip fi ip -n "${!ns_name}" link set lo up + ip netns exec "${!ns_name}" sysctl -wq net.ipv4.conf.all.rp_filter=3D0 + ip netns exec "${!ns_name}" sysctl -wq net.ipv4.conf.default.rp_filter= =3D0 ns_list+=3D("${!ns_name}") done NS_LIST+=3D("${ns_list[@]}") --=20 2.46.0