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Thu, 19 Mar 2026 00:43:59 -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 , , , , Gal Pressman , Moshe Shemesh , Dragos Tatulea Subject: [PATCH net-next 0/3] net/mlx5e: Improve channel creation time via fast-path MKEY initialization Date: Thu, 19 Mar 2026 09:43:35 +0200 Message-ID: <20260319074338.24265-1-tariqt@nvidia.com> X-Mailer: git-send-email 2.44.0 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: CY4PEPF0000EE3C:EE_|PH0PR12MB8823:EE_ X-MS-Office365-Filtering-Correlation-Id: 64d5c688-175e-4885-42cd-08de858b5549 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|82310400026|376014|36860700016|56012099003|18002099003; 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)(1800799024)(82310400026)(376014)(36860700016)(56012099003)(18002099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: fkZMTF9MTrFU2DlQEXLxzAgTmt7wDBcnt4lNh4FO+XYygxAzFF10Qqhje6CRWb9tDqHP/4bOGeIgNrCdvxuwKX+S5jHZyZtM6o1OFPbdO8YVKapX2hdvzTJAHpbboiOUReG18p5N8I1d36hETMgMZHJG25Eq+ABqZrqHCNFJtPhXBonAJG2cLi/rsezNGYLlKyccJrB5n4falvJ40BKZOlc2/3IJwhawj/lZi/TXiUv/BmGdOCCDXZggk19C43UgzxZsnrIbhsbTD9K8lVC8Bn0cHUC7NHiCPeO8ESdeU5USQjvv6tlj20m5rtj9y5sngfqcRohJWHaKhTjwt86z7SCEJyGtizUoAJSSGtGd3fuSuPKbVd+lZD9jyWsQ9TXQw9b+DEwImev4gImIuylARz3wJpDhHVHVHaXsplUR7qkBDtSmoCg4E+nm22CYGUaA X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Mar 2026 07:44:20.9689 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 64d5c688-175e-4885-42cd-08de858b5549 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: CY4PEPF0000EE3C.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR12MB8823 Hi, This series improves channel creation time by moving per-channel MKEY initialization from a slow-path FW command to a fast-path UMR WQE. The benefit becomes more significant with larger MKEYs and a higher number of channels. On my setup with the maximum configuration (248 channels, MTU 9000, RX/TX ring size 8K), the "interface up" operation is 2.081 seconds faster: Before: 5.618 seconds After: 3.537 seconds This corresponds to ~8.4 msec saved per channel. Regards, Tariq Tariq Toukan (3): net/mlx5e: Move RX MPWQE slowpath fields into a separate struct net/mlx5e: RX, Pre-calculate pad value in MPWQE net/mlx5e: Speed up channel creation by initializing MKEY entries via UMR WQE drivers/net/ethernet/mellanox/mlx5/core/en.h | 11 +- .../net/ethernet/mellanox/mlx5/core/en/txrx.h | 1 + .../net/ethernet/mellanox/mlx5/core/en_main.c | 263 +++++++++++++----- .../net/ethernet/mellanox/mlx5/core/en_rx.c | 9 +- 4 files changed, 212 insertions(+), 72 deletions(-) base-commit: a7fb05cbb8f989fa5a81818be9680464cff9d717 -- 2.44.0