From patchwork Tue Mar 26 16:54:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Petr Machata X-Patchwork-Id: 13604723 X-Patchwork-Delegate: kuba@kernel.org Received: from NAM10-MW2-obe.outbound.protection.outlook.com (mail-mw2nam10on2058.outbound.protection.outlook.com [40.107.94.58]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 19A6B13D63F; Tue, 26 Mar 2024 17:01:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.94.58 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711472464; cv=fail; b=eKfrGEq5ckZrxvulJpwsGcj3jhUmADfHJJgPec7IhRjex/qBmykTxLPOfXDutNgQhV53VAz0cMUi3IueIcnT27qxWGVwIzSRbkvmDEkdjE8jE+TyBekPgFBuhtw7ofXNg4HCGZfZmcbPNWUYOhphdToAqQ3olN0A3nT6FXXg8Qo= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711472464; c=relaxed/simple; bh=uywpYYN0x0iP/lSNbJlCJe574vl43rsJel1ltb+my3k=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=tZZk/3uDOxsP47wplWRE3NpWZ4rSJ2Nv1sM7arYHWLHjaSOc5yffOHviAH72/pbth/bwPYTZDY39ekk6DphiTduLJpb1if3QnJPoac7l7ZnWHyVB8tm5eJhI438VtO19DLgQbJS6DGsqcvvPRpOvBiM5kFN3d2rGwwqGfM/u1Kc= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com; spf=fail smtp.mailfrom=nvidia.com; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b=OjLaLQ98; arc=fail smtp.client-ip=40.107.94.58 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=nvidia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b="OjLaLQ98" ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Jc8/fGMBy7BYl5ZbUykq2ycEhPZ8rkc16fE4vuIG+Cp5zQdVb+YMa1Va9wIk4+qClFrj5g8P+UdFA72VBLa+n1skSkQEhE4XxpNIwoUjx8AWFiZVTIB1FL9whBx7ukljDktvydSeDkFu/YSvSpuA+n9TH8D7gH/4WslCwsH0uHLFJ/fmlRT/+ZIDKS7wNi5uCcwshmj/7XwHIh0V3lp+BO2kLetys4pxgtTOXA9GHAi/ZkyaCz7dYX9UGhMmUXNBhhAzUQP0cVVEJcF13wuWtPS8whkdpdXasfzk44jpXLhFp8Bdlp5mNR3rcInhqSaJ9nyE64kGCj8QLyUNpnJYOA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=R/26YhJhoq8oquNMJnrPirMlKkhfMwfNCKw0NnHLDcY=; b=NED2glLbhFI4unU53ZIg0GsPMV68W9iGVo/8kjc9fjMC0Ce5l9shV+zxlYvm7awHShc22GN1Jr71tD3B3m5AczuWSMcnQ8G8CN0tkG1L07N8KBYw+6TLL5B5u70zCja6UC+8L71l+IPO/PZK0iqVs98yzlAH9oZqMSV1W7J7GrROOTvt1x4D5Y/p/uMv3csA0sCd0jBI6vPiVl3c/myH+ql8KCYgwtraGpg/V2fPKAlw9LwTZtl3jmT3Rv9xlgR0GIkqXQHBX0W0oPgCLOljYT4xIZ1X48eWZFcySeUZcsCpnfQlaQTTp6axIdpjB+Skv1zrKEwViaEvpK0cU+eHIg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 216.228.117.160) smtp.rcpttodomain=davemloft.net smtp.mailfrom=nvidia.com; dmarc=pass (p=reject sp=reject pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=R/26YhJhoq8oquNMJnrPirMlKkhfMwfNCKw0NnHLDcY=; b=OjLaLQ98AhqvKxhSNxXFGCHPx3g/taR3ojHwHOa348E3qt9b10/jcRW0Gtlh+VUO04FOSB/LpdwCkOfsaHySENEbyJC/Pg4KDcUxDY5jQMC2czeldtM4lTm3dtCN6Q/nOAKGrsb5VLDfDlWajM49IISSij9HI5TbamnidcYNnDf19gk6LSJ8Ny8+K/qLw7RPeOuopVCQr2AuBxzShyHwpsuHOO91LhGljWiJhP/Y3o1jJMfSoqx1CAXEWD1Ie9D2A18SxijVT0KQ+/ZZnklgMyYp26mVer5PYSRGFRfgfUp+0sz7MmFEWhd78k7CzFIaau7TyvqFajEijCT/Iz0BkQ== Received: from BN9PR03CA0281.namprd03.prod.outlook.com (2603:10b6:408:f5::16) by PH8PR12MB7376.namprd12.prod.outlook.com (2603:10b6:510:214::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7409.32; Tue, 26 Mar 2024 17:00:55 +0000 Received: from BN1PEPF00004681.namprd03.prod.outlook.com (2603:10b6:408:f5:cafe::a7) by BN9PR03CA0281.outlook.office365.com (2603:10b6:408:f5::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7409.13 via Frontend Transport; Tue, 26 Mar 2024 17:00:54 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 216.228.117.160) smtp.mailfrom=nvidia.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.117.160 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.117.160; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (216.228.117.160) by BN1PEPF00004681.mail.protection.outlook.com (10.167.243.87) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7409.10 via Frontend Transport; Tue, 26 Mar 2024 17:00:54 +0000 Received: from rnnvmail201.nvidia.com (10.129.68.8) by mail.nvidia.com (10.129.200.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.41; Tue, 26 Mar 2024 10:00:22 -0700 Received: from localhost.localdomain (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; Tue, 26 Mar 2024 10:00:16 -0700 From: Petr Machata To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , CC: Shuah Khan , Nikolay Aleksandrov , Hangbin Liu , Vladimir Oltean , Benjamin Poirier , "Ido Schimmel" , Jiri Pirko , , Petr Machata , Subject: [PATCH net-next 03/14] selftests: forwarding: README: Document customization Date: Tue, 26 Mar 2024 17:54:30 +0100 Message-ID: X-Mailer: git-send-email 2.44.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: rnnvmail202.nvidia.com (10.129.68.7) To rnnvmail201.nvidia.com (10.129.68.8) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN1PEPF00004681:EE_|PH8PR12MB7376:EE_ X-MS-Office365-Filtering-Correlation-Id: fe26dd51-97d5-4211-ffb9-08dc4db64cb3 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:216.228.117.160;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge1.nvidia.com;CAT:NONE;SFS:(13230031)(36860700004)(82310400014)(376005)(7416005)(1800799015);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Mar 2024 17:00:54.3987 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: fe26dd51-97d5-4211-ffb9-08dc4db64cb3 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN1PEPF00004681.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR12MB7376 X-Patchwork-Delegate: kuba@kernel.org That any sort of customization is possible at all, let alone how it should be done, is currently not at all clear. Document the whats and hows in README. Signed-off-by: Petr Machata Reviewed-by: Benjamin Poirier --- tools/testing/selftests/net/forwarding/README | 33 +++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/tools/testing/selftests/net/forwarding/README b/tools/testing/selftests/net/forwarding/README index b8a2af8fcfb7..7fdb6a9ca543 100644 --- a/tools/testing/selftests/net/forwarding/README +++ b/tools/testing/selftests/net/forwarding/README @@ -56,3 +56,36 @@ o Checks shall be added to lib.sh for any external dependencies. o Code shall be checked using ShellCheck [1] prior to submission. 1. https://www.shellcheck.net/ + +Customization +============= + +The forwarding selftests framework uses a number of variables that +influence its behavior and tools it invokes, and how it invokes them, in +various ways. A number of these variables can be overridden. The way these +overridable variables are specified is typically one of the following two +syntaxes: + + : "${VARIABLE:=default_value}" + VARIABLE=${VARIABLE:=default_value} + +Any of these variables can be overridden. Notably net/forwarding/lib.sh and +net/lib.sh contain a number of overridable variables. + +One way of overriding these variables is through the environment: + + PAUSE_ON_FAIL=yes ./some_test.sh + +The variable NETIFS is special. Since it is an array variable, there is no +way to pass it through the environment. Its value can instead be given as +consecutive arguments to the selftest: + + ./some_test.sh swp{1..8} + +A way to customize variables in a persistent fashion is to create a file +named forwarding.config in this directory. lib.sh sources the file if +present, so it can contain any shell code. Typically it will contain +assignments of variables whose value should be overridden. + +forwarding.config.sample is available in the directory as an example of +how forwarding.config might look.