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Wed, 1 Apr 2026 11:51:33 -0700 From: Tariq Toukan To: Eric Dumazet , Jakub Kicinski , Paolo Abeni , Andrew Lunn , "David S. Miller" CC: Simon Horman , Donald Hunter , Jiri Pirko , Jonathan Corbet , Shuah Khan , Saeed Mahameed , "Leon Romanovsky" , Tariq Toukan , Mark Bloch , Shuah Khan , Chuck Lever , "Matthieu Baerts (NGI0)" , Carolina Jubran , Or Har-Toov , Moshe Shemesh , Dragos Tatulea , Shahar Shitrit , Daniel Zahka , Jacob Keller , Cosmin Ratiu , Parav Pandit , Shay Drori , "Adithya Jayachandran" , Kees Cook , "Daniel Jurgens" , , , , , , Gal Pressman , Jiri Pirko Subject: [PATCH net-next V4 09/12] devlink: Document port-level resources and full dump Date: Wed, 1 Apr 2026 21:49:44 +0300 Message-ID: <20260401184947.135205-10-tariqt@nvidia.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20260401184947.135205-1-tariqt@nvidia.com> References: <20260401184947.135205-1-tariqt@nvidia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN2PEPF000044A4:EE_|IA1PR12MB6114:EE_ X-MS-Office365-Filtering-Correlation-Id: d4b5e27e-d5e9-4329-2b3d-08de901fc305 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|36860700016|376014|7416014|1800799024|18002099003|56012099003|22082099003; X-Microsoft-Antispam-Message-Info: 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 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)(36860700016)(376014)(7416014)(1800799024)(18002099003)(56012099003)(22082099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: PFSVoBOXndClTc/M0N1DL/MpL+/6oWdKo0zF4mSZSBLl/sm36oacFJuaduPiX886fLum84EuySGxZ6aoQvMpPT0fzwIlR58l20s4LT16/HNx2oHiCrpQsVkpQzFqwokf8wtsfI7TbTScIahb9MG/3qsKyzUZMfs0pu2K9WrXbjfCKVw22DQnBOAnZTH50WDT/rPyLcJRWvMxCMzLQngwZolyHVS8FktsOh4S+K8w71zsZiBg1DyYKyYC83jjM/7ObSEl0D+VnznbZRsuOYf7iDcH90cLITP6PV3J+tuJ5s8kqbyYaLokwYbNnjfUQxYIKyBbzBS57zn05qoHrPTqn+RC5BMAwlBRfVJOgYh3bD7iiToBpKzMhpBMugQOaPUbVzJMGRQQNEHvyEU/1be/3XxUn3tPpE+TpIypQEOigmageoOxEfLv+9ruHvbKbebm X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 Apr 2026 18:52:02.1666 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d4b5e27e-d5e9-4329-2b3d-08de901fc305 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: BN2PEPF000044A4.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB6114 Content-Type: text/plain; charset="utf-8" From: Or Har-Toov Document the port-level resource support and the option to dump all resources, including both device-level and port-level entries. Signed-off-by: Or Har-Toov Reviewed-by: Shay Drori Reviewed-by: Moshe Shemesh Reviewed-by: Jiri Pirko Signed-off-by: Tariq Toukan --- .../networking/devlink/devlink-resource.rst | 35 +++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/Documentation/networking/devlink/devlink-resource.rst b/Docume= ntation/networking/devlink/devlink-resource.rst index 3d5ae51e65a2..9839c1661315 100644 --- a/Documentation/networking/devlink/devlink-resource.rst +++ b/Documentation/networking/devlink/devlink-resource.rst @@ -74,3 +74,38 @@ attribute, which represents the pending change in size. = For example: =20 Note that changes in resource size may require a device reload to properly take effect. + +Port-level Resources and Full Dump +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D + +In addition to device-level resources, ``devlink`` also supports port-level +resources. These resources are associated with a specific devlink port rat= her +than the device as a whole. + +To list resources for all devlink devices and ports: + +.. code:: shell + + $ devlink resource show + pci/0000:03:00.0: + name max_local_SFs size 128 unit entry dpipe_tables none + name max_external_SFs size 128 unit entry dpipe_tables none + pci/0000:03:00.0/196608: + name max_SFs size 128 unit entry dpipe_tables none + pci/0000:03:00.0/196609: + name max_SFs size 128 unit entry dpipe_tables none + pci/0000:03:00.1: + name max_local_SFs size 128 unit entry dpipe_tables none + name max_external_SFs size 128 unit entry dpipe_tables none + pci/0000:03:00.1/196708: + name max_SFs size 128 unit entry dpipe_tables none + pci/0000:03:00.1/196709: + name max_SFs size 128 unit entry dpipe_tables none + +To show resources for a specific port: + +.. code:: shell + + $ devlink resource show pci/0000:03:00.0/196608 + pci/0000:03:00.0/196608: + name max_SFs size 128 unit entry dpipe_tables none --=20 2.44.0