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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , John Johansen , Paul Moore , James Morris , "Serge E. Hallyn" , Stephen Smalley , Eric Paris , Mykola Lysenko , Shuah Khan , Simon Horman Cc: Geliang Tang , bpf@vger.kernel.org, netdev@vger.kernel.org, mptcp@lists.linux.dev, apparmor@lists.ubuntu.com, linux-security-module@vger.kernel.org, selinux@vger.kernel.org, linux-kselftest@vger.kernel.org, Yonghong Song Subject: [PATCH bpf-next v10 2/5] selftests/bpf: Use random netns name for mptcp Date: Fri, 4 Aug 2023 09:55:44 +0800 Message-Id: <256d03943f4dbaa5c1d0b3b23f64efac9cda8bd1.1691113640.git.geliang.tang@suse.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: References: X-ClientProxiedBy: SI2PR06CA0011.apcprd06.prod.outlook.com (2603:1096:4:186::16) To HE1PR0402MB3497.eurprd04.prod.outlook.com (2603:10a6:7:83::14) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: HE1PR0402MB3497:EE_|GV1PR04MB9085:EE_ X-MS-Office365-Filtering-Correlation-Id: 996aa739-f520-4134-c846-08db948df0ae X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:HE1PR0402MB3497.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230028)(366004)(376002)(396003)(136003)(346002)(39860400002)(186006)(451199021)(1800799003)(6506007)(38100700002)(921005)(26005)(478600001)(8676002)(8936002)(5660300002)(7416002)(110136005)(44832011)(7406005)(41300700001)(66556008)(54906003)(4326008)(66946007)(66476007)(6512007)(6666004)(86362001)(316002)(6486002)(2616005)(36756003)(2906002)(83380400001)(13296009)(17423001);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: suse.com X-MS-Exchange-CrossTenant-Network-Message-Id: 996aa739-f520-4134-c846-08db948df0ae X-MS-Exchange-CrossTenant-AuthSource: HE1PR0402MB3497.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Aug 2023 01:55:55.3884 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: f7a17af6-1c5c-4a36-aa8b-f5be247aa4ba X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: rYcKUvZ/pG2WWmsKZA8QzR1J3Nt6VILN8R4MyEW4xgQRlp4DrT4GjQSdghM0zhmsTgJqLbjYCJXRGXfOe+06Qg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: GV1PR04MB9085 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Use rand() to generate a random netns name instead of using the fixed name "mptcp_ns" for every test. By doing that, we can re-launch the test even if there was an issue removing the previous netns or if by accident, a netns with this generic name already existed on the system. Note that using a different name each will also help adding more subtests in future commits. Acked-by: Yonghong Song Reviewed-by: Matthieu Baerts Signed-off-by: Geliang Tang --- tools/testing/selftests/bpf/prog_tests/mptcp.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/bpf/prog_tests/mptcp.c b/tools/testing/selftests/bpf/prog_tests/mptcp.c index cd0c42fff7c0..4ccca3d39a8f 100644 --- a/tools/testing/selftests/bpf/prog_tests/mptcp.c +++ b/tools/testing/selftests/bpf/prog_tests/mptcp.c @@ -7,7 +7,7 @@ #include "network_helpers.h" #include "mptcp_sock.skel.h" -#define NS_TEST "mptcp_ns" +char NS_TEST[32]; #ifndef TCP_CA_NAME_MAX #define TCP_CA_NAME_MAX 16 @@ -147,6 +147,8 @@ static void test_base(void) if (!ASSERT_GE(cgroup_fd, 0, "test__join_cgroup")) return; + srand(time(NULL)); + snprintf(NS_TEST, sizeof(NS_TEST), "mptcp_ns_%d", rand()); SYS(fail, "ip netns add %s", NS_TEST); SYS(fail, "ip -net %s link set dev lo up", NS_TEST);