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Thu, 7 May 2026 02:53:55 -0700 From: Tariq Toukan To: Christoph Paasch , Eric Dumazet , Jakub Kicinski , Paolo Abeni , "Andrew Lunn" , "David S. Miller" CC: Saeed Mahameed , Tariq Toukan , "Mark Bloch" , Leon Romanovsky , , , , Gal Pressman , Dragos Tatulea , Daniel Borkmann , "Jesper Dangaard Brouer" , John Fastabend , Stanislav Fomichev , Amery Hung , Alexei Starovoitov Subject: [PATCH net-next V6 0/3] net/mlx5: Avoid payload in skb's linear part for better GRO-processing Date: Thu, 7 May 2026 12:53:27 +0300 Message-ID: <20260507095330.318892-1-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: BL02EPF0002992D:EE_|CY1PR12MB9676:EE_ X-MS-Office365-Filtering-Correlation-Id: f6ef95d6-f8bd-4e76-49a2-08deac1e972a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700016|1800799024|82310400026|7416014|376014|18002099003|56012099003|3023799003; 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)(1800799024)(82310400026)(7416014)(376014)(18002099003)(56012099003)(3023799003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: wAmQAW7T0jfsylZljQY4Z/lW6F6SBFQFMa/e4XBzcSkeQr9akSFgJ3IEfj7rJ3vQpFR+97AKiL2yjqpREQi/FW6e8qrhurrlZcE3qXHOLLccwRImgjjyj4DpMn4h9mG2A6kMUsbyxqoOvr290XBN199GpwDJE1H3K4abyMhd1Ng2owK/TFZOsM99Zo+SfFV/kT4DwlZ/UZy5py7+M5FTaAPrYgwheG4tnlVMHiTDqHe92LOT1CbdMpyumPSjrxI130AOgnTeBkck5SFdcpsYGFurdaT9iQ7y2ziMSSIGfEisqJDNLYc+pK8pndQfOhSU6eUIwAhvOKMAf0U8xDht6GXIO5uw5yKupxT/BnIhaoOvyp9zrhtzf91x2k/cP3CXSgc6AbUXKGWBbYJrdkw247gfxtpQw7oK2tXQpiQtIrn0+f8Yllh3b3Cp5foW48vq X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 May 2026 09:54:11.6560 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f6ef95d6-f8bd-4e76-49a2-08deac1e972a 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: BL02EPF0002992D.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY1PR12MB9676 Hi, This is V6 of a series originally submitted by Christoph. When LRO is enabled on the MLX, mlx5e_skb_from_cqe_mpwrq_nonlinear copies parts of the payload to the linear part of the skb. This triggers suboptimal processing in GRO, causing slow throughput. This patch series addresses this by using eth_get_headlen to compute the size of the protocol headers and only copy those bits. This results in a significant throughput improvement (detailed results in the specific patch). Regards, Tariq --- V6: - Rebase after Amery's changes. - Address Amery's concern about header length after XDP pull. - Add a small optimization to memcpy the header length aligned to cache line. V5: https://lore.kernel.org/all/20250904-cpaasch-pf-927-netmlx5-avoid-copying-the-payload-to-the-malloced-area-v5-0-ea492f7b11ac@openai.com/ Christoph Paasch (2): net/mlx5e: DMA-sync earlier in mlx5e_skb_from_cqe_mpwrq_nonlinear net/mlx5e: Avoid copying payload to the skb's linear part Dragos Tatulea (1): net/mlx5e: Align header copy to cache line for Striding RQ non-linear .../net/ethernet/mellanox/mlx5/core/en_rx.c | 31 +++++++++++++------ 1 file changed, 22 insertions(+), 9 deletions(-) base-commit: dacf281771a9aed1a723b196120a0de8637910b9 -- 2.44.0