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Wed, 1 Apr 2026 11:50:30 -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 02/12] devlink: Add port-level resource registration infrastructure Date: Wed, 1 Apr 2026 21:49:37 +0300 Message-ID: <20260401184947.135205-3-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: SJ1PEPF00001CE0:EE_|DM4PR12MB6280:EE_ X-MS-Office365-Filtering-Correlation-Id: 0fdde610-3a9c-4738-2ff1-08de901f9f07 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700016|1800799024|82310400026|376014|7416014|18002099003|22082099003|56012099003; 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)(36860700016)(1800799024)(82310400026)(376014)(7416014)(18002099003)(22082099003)(56012099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: wRmTUPhlyEnFWx8tY6ilvoIrVxqMs7018/1AWeIqjVGpvfVw20LxAA2qQdqEEzfOzs/PcgJmoX/Fy1LgQlFppRg4rNC2fDPmHTDPigac8V+agfjSvydxRIYWHz7FlMmpbSNiKmG5TrZx5C7dBHZ5PcoaMUhBG1sRLXyct0gA5SRuYQYvjn8VlY6JxCL9U9BVAtQYis9HD9AAp/qksfm7vzAa3E2S2C02wohLkR4VENMBdaec5NdFaPqugpPjTQogaSEAQdaBuAPB+oJlaPcLZdhYBT/KctQGjR8L+It8UVngZr3ZU19OrSrMEW0/rruSCQMaCqU5ErxwTJ/S+Egrwpt3y2Nq95FVsORmE0pURASlaJ9QcA8V3929QtIJXTtdSGMw7q3OGAdH4OAPq4Ff5JamMT21MEdv7vkejXZbV1+IVFftBdDPrkakxFTujl4L X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 Apr 2026 18:51:01.8229 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0fdde610-3a9c-4738-2ff1-08de901f9f07 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: SJ1PEPF00001CE0.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB6280 Content-Type: text/plain; charset="utf-8" From: Or Har-Toov The current devlink resource infrastructure supports only device-level resources. Some hardware resources are associated with specific ports rather than the entire device, and today we have no way to show resource per-port. Add support for registering resources at the port level. Signed-off-by: Or Har-Toov Reviewed-by: Shay Drori Reviewed-by: Moshe Shemesh Reviewed-by: Jiri Pirko Signed-off-by: Tariq Toukan --- include/net/devlink.h | 8 ++++++++ net/devlink/port.c | 2 ++ net/devlink/resource.c | 43 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 53 insertions(+) diff --git a/include/net/devlink.h b/include/net/devlink.h index f5439d050eb0..bcd31de1f890 100644 --- a/include/net/devlink.h +++ b/include/net/devlink.h @@ -129,6 +129,7 @@ struct devlink_rate { struct devlink_port { struct list_head list; struct list_head region_list; + struct list_head resource_list; struct devlink *devlink; const struct devlink_port_ops *ops; unsigned int index; @@ -1891,6 +1892,13 @@ void devlink_resources_unregister(struct devlink *de= vlink); int devl_resource_size_get(struct devlink *devlink, u64 resource_id, u64 *p_resource_size); +int +devl_port_resource_register(struct devlink_port *devlink_port, + const char *resource_name, + u64 resource_size, u64 resource_id, + u64 parent_resource_id, + const struct devlink_resource_size_params *params); +void devl_port_resources_unregister(struct devlink_port *devlink_port); int devl_dpipe_table_resource_set(struct devlink *devlink, const char *table_name, u64 resource_id, u64 resource_units); diff --git a/net/devlink/port.c b/net/devlink/port.c index 7fcd1d3ed44c..485029d43428 100644 --- a/net/devlink/port.c +++ b/net/devlink/port.c @@ -1025,6 +1025,7 @@ void devlink_port_init(struct devlink *devlink, return; devlink_port->devlink =3D devlink; INIT_LIST_HEAD(&devlink_port->region_list); + INIT_LIST_HEAD(&devlink_port->resource_list); devlink_port->initialized =3D true; } EXPORT_SYMBOL_GPL(devlink_port_init); @@ -1042,6 +1043,7 @@ EXPORT_SYMBOL_GPL(devlink_port_init); void devlink_port_fini(struct devlink_port *devlink_port) { WARN_ON(!list_empty(&devlink_port->region_list)); + WARN_ON(!list_empty(&devlink_port->resource_list)); } EXPORT_SYMBOL_GPL(devlink_port_fini); =20 diff --git a/net/devlink/resource.c b/net/devlink/resource.c index ee169a467d48..f3014ec425c4 100644 --- a/net/devlink/resource.c +++ b/net/devlink/resource.c @@ -532,3 +532,46 @@ void devl_resource_occ_get_unregister(struct devlink *= devlink, resource->occ_get_priv =3D NULL; } EXPORT_SYMBOL_GPL(devl_resource_occ_get_unregister); + +/** + * devl_port_resource_register - devlink port resource register + * + * @devlink_port: devlink port + * @resource_name: resource's name + * @resource_size: resource's size + * @resource_id: resource's id + * @parent_resource_id: resource's parent id + * @params: size parameters + * + * Generic resources should reuse the same names across drivers. + * Please see the generic resources list at: + * Documentation/networking/devlink/devlink-resource.rst + * + * Return: 0 on success, negative error code otherwise. + */ +int +devl_port_resource_register(struct devlink_port *devlink_port, + const char *resource_name, + u64 resource_size, u64 resource_id, + u64 parent_resource_id, + const struct devlink_resource_size_params *params) +{ + return __devl_resource_register(devlink_port->devlink, + &devlink_port->resource_list, + resource_name, resource_size, + resource_id, parent_resource_id, + params); +} +EXPORT_SYMBOL_GPL(devl_port_resource_register); + +/** + * devl_port_resources_unregister - unregister all devlink port resources + * + * @devlink_port: devlink port + */ +void devl_port_resources_unregister(struct devlink_port *devlink_port) +{ + __devl_resources_unregister(devlink_port->devlink, + &devlink_port->resource_list); +} +EXPORT_SYMBOL_GPL(devl_port_resources_unregister); --=20 2.44.0