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Wed, 1 Jul 2026 00:35:36 -0700 From: Tariq Toukan To: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , , Paolo Abeni CC: Adithya Jayachandran , Bobby Eshleman , Carolina Jubran , Cosmin Ratiu , Daniel Borkmann , Daniel Jurgens , Daniel Zahka , David Wei , Donald Hunter , Dragos Tatulea , Jiri Pirko , Jiri Pirko , Joe Damato , Jonathan Corbet , Kees Cook , Leon Romanovsky , , , , , Mark Bloch , Moshe Shemesh , Or Har-Toov , Parav Pandit , Petr Machata , Ratheesh Kannoth , Saeed Mahameed , Shahar Shitrit , Shay Drori , Shuah Khan , Shuah Khan , Simon Horman , Stanislav Fomichev , Tariq Toukan , Willem de Bruijn , Gal Pressman Subject: [PATCH net-next V10 14/14] net/mlx5: Document devlink rates Date: Wed, 1 Jul 2026 10:32:54 +0300 Message-ID: <20260701073254.754518-15-tariqt@nvidia.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20260701073254.754518-1-tariqt@nvidia.com> References: <20260701073254.754518-1-tariqt@nvidia.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS1PEPF00017090:EE_|DM4PR12MB8522:EE_ X-MS-Office365-Filtering-Correlation-Id: e6ed5ba5-d19e-478b-a16b-08ded74369e7 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|23010399003|376014|7416014|36860700016|1800799024|32116099003|11063799006|56012099006|22082099003|18002099003|3023799007; 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:(13230040)(82310400026)(23010399003)(376014)(7416014)(36860700016)(1800799024)(32116099003)(11063799006)(56012099006)(22082099003)(18002099003)(3023799007);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: gFOQvPbkXQ0ZXxASoN+YPxhG0bGEILy51tEPZTg+mQltaVi//BXr5QA1kJ0i35Bf424rjH4C6K1JA+z6u50AIIysXugNHB9FL9409rHf3KoPs8tZTF9oHnNf4BSzI8y0E0qouIre/3KyjIvZyitvsuLdMfq7Z21eR4uua4NibemLnEH/z+BzutsInXQOZNoV8Mrl1e34QCwX/Q6pRImVMS929b8NJSiKvcn2gl1H/WPzDmJvWzu1Wwd9Efzs0BVxQz8CeocAQsvN49T5K5ZmeKazNdxHnzCi0sTq4ODqFUpHhuiWI24mYa4YdY/roO5aC0gZBZheN9nIEVgCGMCpb439iJ3gLT2zvngXg4vuIwcySa1yEbXKc0hfLIKIYDX+HGCjU2x9Gow27u4510A13GWfw4CXuQY4c2sdr/7nKAvR0PA7F7PWuGiUNGcDSKit X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 Jul 2026 07:36:07.0548 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: e6ed5ba5-d19e-478b-a16b-08ded74369e7 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: DS1PEPF00017090.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB8522 From: Cosmin Ratiu It seems rates were not documented in the mlx5-specific file, so add examples on how to limit VFs and groups and also provide an example of the intended way to achieve cross-esw scheduling. Signed-off-by: Cosmin Ratiu Reviewed-by: Carolina Jubran Signed-off-by: Tariq Toukan --- Documentation/networking/devlink/mlx5.rst | 33 +++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/Documentation/networking/devlink/mlx5.rst b/Documentation/networking/devlink/mlx5.rst index 4bba4d780a4a..cf1dffa67669 100644 --- a/Documentation/networking/devlink/mlx5.rst +++ b/Documentation/networking/devlink/mlx5.rst @@ -419,3 +419,36 @@ User commands examples: .. note:: This command can run over all interfaces such as PF/VF and representor ports. + +Rates +===== + +mlx5 devices can limit transmission of individual VFs or a group of them via +the devlink-rate API in switchdev mode. + +User commands examples: + +- Print the existing rates:: + + $ devlink port function rate show + +- Set a max tx limit on traffic from VF0:: + + $ devlink port function rate set pci/0000:82:00.0/1 tx_max 10Gbit + +- Create a rate group with a max tx limit and add two VFs to it:: + + $ devlink port function rate add pci/0000:82:00.0/group1 tx_max 10Gbit + $ devlink port function rate set pci/0000:82:00.0/1 parent group1 + $ devlink port function rate set pci/0000:82:00.0/2 parent group1 + +- Same scenario, with a min guarantee of 20% of the bandwidth for the first VF:: + + $ devlink port function rate add pci/0000:82:00.0/group1 tx_max 10Gbit + $ devlink port function rate set pci/0000:82:00.0/1 parent group1 tx_share 2Gbit + $ devlink port function rate set pci/0000:82:00.0/2 parent group1 + +- Cross-device scheduling:: + + $ devlink port function rate add pci/0000:82:00.0/group1 tx_max 10Gbit + $ devlink port function rate set pci/0000:82:00.1/32769 parent pci/0000:82:00.0/group1 -- 2.44.0