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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 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 Subject: [PATCH bpf-next v8 2/4] selftests/bpf: Use random netns name for mptcp Date: Thu, 3 Aug 2023 15:30:40 +0800 Message-Id: X-Mailer: git-send-email 2.35.3 In-Reply-To: References: X-ClientProxiedBy: TY2PR02CA0070.apcprd02.prod.outlook.com (2603:1096:404:e2::34) To HE1PR0402MB3497.eurprd04.prod.outlook.com (2603:10a6:7:83::14) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: HE1PR0402MB3497:EE_|AM9PR04MB8571:EE_ X-MS-Office365-Filtering-Correlation-Id: c66755ac-99c2-455b-11a7-08db93f395b6 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)(376002)(346002)(366004)(39860400002)(396003)(136003)(451199021)(6666004)(110136005)(6486002)(41300700001)(478600001)(7416002)(5660300002)(8936002)(8676002)(7406005)(186003)(4326008)(6512007)(316002)(66476007)(26005)(6506007)(66556008)(66946007)(2616005)(2906002)(83380400001)(44832011)(36756003)(38100700002)(921005)(86362001)(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: c66755ac-99c2-455b-11a7-08db93f395b6 X-MS-Exchange-CrossTenant-AuthSource: HE1PR0402MB3497.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 03 Aug 2023 07:31:00.2643 (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: Iq7ZrgMpv4GE/ykGPBn3RJasBrRbC8yB1FL4uSMt9KkwhTCck6AnpHgFHDYY+ypWasrgQDAncVF/3yNsHWWDUg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM9PR04MB8571 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. Signed-off-by: Geliang Tang Reviewed-by: Matthieu Baerts --- 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);