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Wed, 27 May 2026 05:55:58 -0700 From: Tariq Toukan To: Eric Dumazet , Jakub Kicinski , Paolo Abeni , Andrew Lunn , "David S. Miller" CC: Saeed Mahameed , Leon Romanovsky , Tariq Toukan , Mark Bloch , Nimrod Oren , Yael Chemla , Shay Drory , Or Har-Toov , Edward Srouji , Maher Sanalla , Simon Horman , Parav Pandit , Patrisious Haddad , Kees Cook , Moshe Shemesh , , , , Gal Pressman Subject: [PATCH net-next 10/13] net/mlx5: SD, keep netdev resources on same PF in switchdev mode Date: Wed, 27 May 2026 15:54:24 +0300 Message-ID: <20260527125427.385976-11-tariqt@nvidia.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20260527125427.385976-1-tariqt@nvidia.com> References: <20260527125427.385976-1-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: 8bit Content-Type: text/plain X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL6PEPF0001AB71:EE_|SN7PR12MB8148:EE_ X-MS-Office365-Filtering-Correlation-Id: d648af9b-302b-432c-d90c-08debbef591a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700016|376014|7416014|82310400026|1800799024|11063799006|18002099003|22082099003|56012099006; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.118.232;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge1.nvidia.com;CAT:NONE;SFS:(13230040)(36860700016)(376014)(7416014)(82310400026)(1800799024)(11063799006)(18002099003)(22082099003)(56012099006);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: BImaJqjo8kMR0EnBGUQhrLhac3zYM3eYjkXpbqTaOu3kY/tW8pCYZ+f+zPTt5jhsxXO9AmZ8s7lQ9eA6PQ40gaqk9dIkXguPn6taYIZYnyWlELhAVEkPcCLfgVon4RhmMREOaFAWHYg1Rhh1Aeyo55VJt5Ida+WNKr5BtzOH+bzOKWNOC9nNpekduSQEOxsyTc9u27BXNQtpRJ0VfDI51FUFNUB8/71e344SzX+47ZIq7W2BLYPoXwaJBsEnCv2AFn4omFf/sf3ZlirL+0+gQNUUE8uKD/nCT9d4JgPtXxveo2g68f8RublebCfMGpQPfgdJnA5n+Q81F1jku3iJ4X8IrftRdFUAYeUcMhS9T5PmAjrlUiTPGIM1qeDrNMHqpqb/Nh/s7M8QTHx196BKTjrxEAa1dWdghQbWN75BQI9JugXOy6BU/25lVVhZ0xdb X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 May 2026 12:56:19.7791 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d648af9b-302b-432c-d90c-08debbef591a X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.232];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BL6PEPF0001AB71.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB8148 From: Shay Drory In SD switchdev mode, network device resources such as channels and completion vectors must remain on the same PF rather than being distributed across SD group members. Modify mlx5_sd_ch_ix_get_dev_ix() to return 0 and mlx5_sd_ch_ix_get_vec_ix() to return the channel index directly when in switchdev mode, keeping resources local to the requesting PF. Signed-off-by: Shay Drory Reviewed-by: Mark Bloch Signed-off-by: Tariq Toukan --- drivers/net/ethernet/mellanox/mlx5/core/lib/sd.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/sd.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/sd.c index 8991db3a19cf..ec606851feb8 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lib/sd.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/sd.c @@ -6,6 +6,7 @@ #include "mlx5_core.h" #include "lib/mlx5.h" #include "fs_cmd.h" +#include #include #include @@ -85,11 +86,17 @@ mlx5_sd_primary_get_peer(struct mlx5_core_dev *primary, int idx) int mlx5_sd_ch_ix_get_dev_ix(struct mlx5_core_dev *dev, int ch_ix) { + if (is_mdev_switchdev_mode(dev)) + return 0; + return ch_ix % mlx5_sd_get_host_buses(dev); } int mlx5_sd_ch_ix_get_vec_ix(struct mlx5_core_dev *dev, int ch_ix) { + if (is_mdev_switchdev_mode(dev)) + return ch_ix; + return ch_ix / mlx5_sd_get_host_buses(dev); } -- 2.44.0