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Thu, 8 Feb 2024 07:56:09 -0800 Received: from dev-r-vrt-155.mtr.labs.mlnx (10.126.230.35) by rnnvmail201.nvidia.com (10.129.68.8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1258.12; Thu, 8 Feb 2024 07:56:06 -0800 From: Ido Schimmel To: , CC: , , , , , , , , Ido Schimmel Subject: [PATCH net 4/4] selftests: forwarding: Fix bridge locked port test flakiness Date: Thu, 8 Feb 2024 17:55:29 +0200 Message-ID: <20240208155529.1199729-5-idosch@nvidia.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240208155529.1199729-1-idosch@nvidia.com> References: <20240208155529.1199729-1-idosch@nvidia.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: rnnvmail203.nvidia.com (10.129.68.9) To rnnvmail201.nvidia.com (10.129.68.8) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MWH0EPF000989EC:EE_|DS0PR12MB9398:EE_ X-MS-Office365-Filtering-Correlation-Id: 59e66a87-bf4d-40ea-9d44-08dc28be81f5 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Feb 2024 15:56:26.7460 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 59e66a87-bf4d-40ea-9d44-08dc28be81f5 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: MWH0EPF000989EC.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB9398 X-Patchwork-Delegate: kuba@kernel.org The redirection test case fails in the netdev CI on debug kernels because an FDB entry is learned despite the presence of a tc filter that redirects incoming traffic [1]. I am unable to reproduce the failure locally, but I can see how it can happen given that learning is first enabled and only then the ingress tc filter is configured. On debug kernels the time window between these two operations is longer compared to regular kernels, allowing random packets to be transmitted and trigger learning. Fix by reversing the order and configure the ingress tc filter before enabling learning. [1] [...] # TEST: Locked port MAB redirect [FAIL] # Locked entry created for redirected traffic Fixes: 38c43a1ce758 ("selftests: forwarding: Add test case for traffic redirection from a locked port") Signed-off-by: Ido Schimmel --- tools/testing/selftests/net/forwarding/bridge_locked_port.sh | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/net/forwarding/bridge_locked_port.sh b/tools/testing/selftests/net/forwarding/bridge_locked_port.sh index 9af9f6964808..c62331b2e006 100755 --- a/tools/testing/selftests/net/forwarding/bridge_locked_port.sh +++ b/tools/testing/selftests/net/forwarding/bridge_locked_port.sh @@ -327,10 +327,10 @@ locked_port_mab_redirect() RET=0 check_port_mab_support || return 0 - bridge link set dev $swp1 learning on locked on mab on tc qdisc add dev $swp1 clsact tc filter add dev $swp1 ingress protocol all pref 1 handle 101 flower \ action mirred egress redirect dev $swp2 + bridge link set dev $swp1 learning on locked on mab on ping_do $h1 192.0.2.2 check_err $? "Ping did not work with redirection" @@ -349,8 +349,8 @@ locked_port_mab_redirect() check_err $? "Locked entry not created after deleting filter" bridge fdb del `mac_get $h1` vlan 1 dev $swp1 master - tc qdisc del dev $swp1 clsact bridge link set dev $swp1 learning off locked off mab off + tc qdisc del dev $swp1 clsact log_test "Locked port MAB redirect" }