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Wed, 30 Sep 2026 04:43:24 -0700 Received: from vdi.nvidia.com (10.127.8.10) by mail.nvidia.com (10.129.68.6) with Microsoft SMTP Server id 15.2.2562.49 via Frontend Transport; Wed, 30 Sep 2026 04:43:20 -0700 From: Tariq Toukan To: Leon Romanovsky , , "Mark Bloch" , , Saeed Mahameed , Tariq Toukan CC: Andrew Lunn , Cosmin Ratiu , "David S. Miller" , Dragos Tatulea , Eric Dumazet , Gal Pressman , Jakub Kicinski , Jason Gunthorpe , Leon Romanovsky , open list , Paolo Abeni Subject: [PATCH mlx5-next V2 00/10] mlx5: Move data direct infrastructure to mlx5_core Date: Wed, 30 Sep 2026 14:42:17 +0300 Message-ID: <20260930114227.139274-1-tariqt@nvidia.com> X-Mailer: git-send-email 2.44.0 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: BL6PEPF00020E64:EE_|SJ5PPF6375781D1:EE_ X-MS-Office365-Filtering-Correlation-Id: a49479f3-98d6-43a0-1e59-08df1ee8132c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|1800799024|23010399003|36860700016|82310400026|11063799006|10067099003|56012099006|6133799003|18002099003|13003099007; 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)(7416014)(376014)(1800799024)(23010399003)(36860700016)(82310400026)(11063799006)(10067099003)(56012099006)(6133799003)(18002099003)(13003099007);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: ixqzQ8PQvqQiceK7t0hEDeI7Y++xL/Wsf//eZ1YDl+9Ys7r4BEP8gvBCj/fePu/wLk48YLnnd/CuZPogG3rYeC/VEttwWH5Q/+W1gyWcuA0mKZUW+0j3+HsTRVrue1qfj2iyhFMB3JyqwqWosDEDqlzOl1Q8ZQCS/WflHL7y7kw4A4Db8v7BmcHK4Hlnq86RIgTw2QNVzHtMXwKR63GBXu9dq9Furg6ryn/tQWa5zuf/XMd47gJWWVPQbQkkFTvwcxIfNGzBsrWwmxd1I1Q57kYlUNsxbg/0QXp4q01b4oEopDDGOn4whN+h8AlOzOJL2bUyEgTE4pwLizJYKJCvbc4vED37+HBiWjiOjOuvlN2iiCMJJvChxyThzxvmu004e6bLK2at5HT0qnVuMn8n7eWmrR/EyiyD3gt2ls7WyVRL8Lcmk9gbPplpOHzh2wD+ X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Sep 2026 11:43:41.1034 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a49479f3-98d6-43a0-1e59-08df1ee8132c 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: BL6PEPF00020E64.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ5PPF6375781D1 Hi, Data direct support currently lives in mlx5_ib, which owns the data direct PCI driver, device matching and resource management. To prepare for data direct support in netdev, move this infrastructure to mlx5_core and provide a common interface for its consumers. The series first replaces the direct IB unbind callback with a blocking notifier chain, allowing multiple consumers to receive unbind events. It then separates consumer registration from initialization, consolidates the per-device state and resources, and keeps IB-specific locking and MR teardown in mlx5_ib. With these preparations in place, the final patch moves the shared implementation and PCI driver to mlx5_core. Data direct initialization and resource creation run during core load, before consumers attach; cleanup runs during core unload, after consumers detach. The data direct PCI driver is also explicitly named "mlx5_dd", replacing the previous "mlx5_ib" name derived from KBUILD_MODNAME. This series by Dragos prepares the shared infrastructure for netdev support. The netdev consumer will follow in a separate series. Regards, Tariq V2: - Changed error message on VUID query failure (Leon) V1: https://lore.kernel.org/all/20260917111422.4054862-1-tariqt@nvidia.com/ Dragos Tatulea (10): RDMA/mlx5: Notify data direct users via a notifier chain on unbind RDMA/mlx5: Add mlx5_data_direct_supported() helper RDMA/mlx5: Make the data direct VUID query self-contained RDMA/mlx5: Give the data direct PCI driver a proper name RDMA/mlx5: Move and rename data direct resource functions RDMA/mlx5: Add new registration stage for data direct users RDMA/mlx5: Extract IB specific lock out of data direct RDMA/mlx5: Consolidate data direct state into one object RDMA/mlx5: Pull data_direct resource creation in init phase mlx5: Move data direct implementation to mlx5_core drivers/infiniband/hw/mlx5/Makefile | 1 - drivers/infiniband/hw/mlx5/cmd.c | 21 - drivers/infiniband/hw/mlx5/cmd.h | 2 - drivers/infiniband/hw/mlx5/data_direct.c | 227 ---------- drivers/infiniband/hw/mlx5/data_direct.h | 23 - drivers/infiniband/hw/mlx5/main.c | 144 +------ drivers/infiniband/hw/mlx5/mlx5_ib.h | 18 +- drivers/infiniband/hw/mlx5/mr.c | 7 +- drivers/infiniband/hw/mlx5/odp.c | 2 +- drivers/infiniband/hw/mlx5/std_types.c | 3 +- drivers/infiniband/hw/mlx5/umr.c | 11 +- .../net/ethernet/mellanox/mlx5/core/Makefile | 2 +- .../ethernet/mellanox/mlx5/core/data_direct.c | 400 ++++++++++++++++++ .../net/ethernet/mellanox/mlx5/core/main.c | 15 + .../ethernet/mellanox/mlx5/core/mlx5_core.h | 5 + include/linux/mlx5/data_direct.h | 47 ++ include/linux/mlx5/driver.h | 8 + 17 files changed, 515 insertions(+), 421 deletions(-) delete mode 100644 drivers/infiniband/hw/mlx5/data_direct.c delete mode 100644 drivers/infiniband/hw/mlx5/data_direct.h create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/data_direct.c create mode 100644 include/linux/mlx5/data_direct.h base-commit: 36b1d3299d0b6aa51485cc9a79b8d94948d5f3d4 -- 2.44.0