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emacs 30.2 From: Petr Machata To: Jakub Kicinski CC: , , , , , , , , , , , , Subject: Re: [PATCH net-next v2 10/12] selftests: drv-net: hw: convert the Toeplitz test to Python Date: Wed, 19 Nov 2025 17:39:46 +0100 In-Reply-To: <20251118215126.2225826-11-kuba@kernel.org> Message-ID: <87fraaarfv.fsf@nvidia.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain 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: SJ5PEPF0000020A:EE_|CH3PR12MB7763:EE_ X-MS-Office365-Filtering-Correlation-Id: dbc9638e-7a4c-4319-6cf5-08de278d2c0c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|7416014|376014|36860700013|1800799024; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?UtuS+nb6SVPT8at8vCoDIgZcfUp/T6jSjEImAuFyGaRwmWl1zHkgMWFoeOgq?= =?us-ascii?Q?IfCee5Mit4QKXnqXG5ejBOsvERMJWAx2qKmtwd7WJkZOikKBU2sH2ghWXJ5V?= =?us-ascii?Q?9l72xorkE+Uua6G/vAY3PPO0XwgqDQyPSaSkn4bUXcO+vsvol8MrXONWEnZw?= =?us-ascii?Q?CBR2G2sAs/p1byz/NRreDG69cVd8tawe2wOWjtCWyNg1EzYcUO3PXbIkc9DT?= =?us-ascii?Q?0g0xw82o93V4szy6FvfAvm/+0vjP1LnYIxHK/lWA2ODc5Yncx5Js4YEylO+o?= =?us-ascii?Q?dIZvVJwTEezJ+9FKiecrDskzcXan0aE/F5zlQpqCTB623TLhQXaddD82IdL9?= =?us-ascii?Q?7zLPxs72wYTXsH9N2uOdLeAakJ7kflkenJIHW5Bk1ndV66APb0y7p4eqR13k?= =?us-ascii?Q?FRg+eBqF5c0KDImhp+oeMBMLq7OeqFk4ySjmZve1PTpJOWpYPdn63Scl4kLh?= =?us-ascii?Q?InEcsBddqf3TJfU32ahAyCULxHhEMwr8foF5O4BYPJ/yJMsKXd6GEnc3pn7D?= =?us-ascii?Q?xtXZGYILzEN2DcCe8gqN1RyZakSJ5umpMrAgQcv9Tgva1A61jcX4UjGbBU3U?= =?us-ascii?Q?zfBw8YegEyCKI+FJB2KkgpsKUCBAfAp3KsW2BZyDPvHZ0N7EQEglkhtt8b76?= =?us-ascii?Q?22xR2tNhAJ1Ny/0e4wv7Hz7GLG4AF91wJa/dgsM1KaZp7vamiy88M/zacaMo?= =?us-ascii?Q?9dZy1Ra9KPK1OJryHPnJdb8lZ/hO/DGDNqe0sTmt0wBEfbxGl8BNaXVzRTpi?= =?us-ascii?Q?xv7znORkGnLVylE0c1og4j7j3IqvHCkJuaYAmoCQIrDyaZ8W397LWnLAu5TT?= =?us-ascii?Q?SLMGINxrbeXfrcaw0PfYeH3r2XJHqHyhbfEmudaJIQBsvfSQVb6COwCypD2s?= =?us-ascii?Q?35FTKagq6nfJys/Qsy02LxZDMTuU51U4uLXFoJtuOV6Vqbjbm7F+pJd5PZ8n?= =?us-ascii?Q?E2gTRTyaJaIC66VI8L1Anww4wryY1jbbfC9A1u80AMNcZqf/rJ3mJIT56kyz?= =?us-ascii?Q?lv1mFPGTWe2vVtuApRF2TmQT58mPj+XTJeckxFZsBWtyaBC0Kz97RIOt8lQk?= =?us-ascii?Q?DyIDaptT2nsdP/0zJBpQRwpP8z7vTGc8TOvvuER47/um/xOmq9UgPbnLLY/I?= =?us-ascii?Q?rFfgO4Pz3sVbvb/jvXDvbnvjP5xgwn4ageCENZsQTzTNPjUFQucSXV44h/0m?= =?us-ascii?Q?NiIRtyNHqP/QPooCDkbwVXaigEbpXof4a6+WAEzNIYuqW+R1u2rNBhF3zNXc?= =?us-ascii?Q?qfdN+jjO7qBBzaZi8vDXUAPCoNvT0MTSMADBUWhjldeCiMm5uHdo+FM9JqPV?= =?us-ascii?Q?jnJ24iowfcozbFBbzboa+/5rCqFl+19jzhGCt2OLVMKy0miS5HtzimCswfoj?= =?us-ascii?Q?XPTXT89SsAsmeBcXEA0NgOjHhfWKv+hJqY7K955HRRCzU2QAGyns3v5dg6Ym?= =?us-ascii?Q?xBjaXHZ+SxqNaqH6erF4gSRe/QLhvCC8OQfmvTQYQZ1rE11oQECN1UOgNQbW?= =?us-ascii?Q?bCN1OekwFRzTf9MDUaBvkMA7VzapaSbiVnRa0mRbG3UtcOupSixGT6zMUGci?= =?us-ascii?Q?bdPz66M/i+AlVDq3ZCk=3D?= X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230040)(82310400026)(7416014)(376014)(36860700013)(1800799024);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Nov 2025 17:00:41.4828 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: dbc9638e-7a4c-4319-6cf5-08de278d2c0c 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: SJ5PEPF0000020A.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB7763 Jakub Kicinski writes: > Rewrite the existing toeplitz.sh test in Python. The conversion > is a lot less exact than the GRO one. We use Netlink APIs to > get the device RSS and IRQ information. We expect that the device > has neither RPS nor RFS configured, and set RPS up as part of > the test. > > Signed-off-by: Jakub Kicinski Reviewed-by: Petr Machata > + # Set RPS bitmap for all rx queues > + for rps_file in glob.glob(f"/sys/class/net/{cfg.ifname}/queues/rx-*/rps_cpus"): > + cmd(f"echo {mask} > {rps_file}", shell=True) A bit odd to use echo like this, the other test does this through open / write. Unless I'm missing something and this actually runs remotely...? Anyway, not important. Just that maybe eventually some helpers that support this sysfs-based configuration might be handy. > + return mask > + > + > +def _send_traffic(cfg, proto_flag, ipver, port): > + """Send 20 packets of requested type.""" > + > + # Determine protocol and IP version for socat > + if proto_flag == "-u": > + proto = "UDP" > + else: > + proto = "TCP" > + > + baddr = f"[{cfg.addr_v['6']}]" if ipver == "6" else cfg.addr_v["4"] > + > + # Run socat in a loop to send traffic periodically > + # Use sh -c with a loop similar to toeplitz_client.sh > + socat_cmd = f""" > + for i in `seq 20`; do > + echo "msg $i" | socat -{ipver} -t 0.1 - {proto}:{baddr}:{port}; > + sleep 0.001; > + done > + """ Yeah, what with the remote execution, this probably makes sense. > + cmd(socat_cmd, shell=True, host=cfg.remote)