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Sun, 31 May 2026 23:15:35 -0700 From: Tariq Toukan To: Eric Dumazet , Jakub Kicinski , Paolo Abeni , Andrew Lunn , "David S. Miller" CC: Saeed Mahameed , Tariq Toukan , "Mark Bloch" , Leon Romanovsky , , , , Gal Pressman , Amery Hung , David Laight , "Christoph Paasch" Subject: [PATCH net-next V7 0/2] net/mlx5: Avoid payload in skb's linear part for better GRO-processing Date: Mon, 1 Jun 2026 09:15:20 +0300 Message-ID: <20260601061522.398044-1-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: CH1PEPF0000AD7F:EE_|LV3PR12MB9402:EE_ X-MS-Office365-Filtering-Correlation-Id: 16b326e5-c954-457a-e296-08debfa5396f X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|1800799024|36860700016|82310400026|3023799007|56012099006|18002099003|6133799003|11063799006; X-Microsoft-Antispam-Message-Info: fPcI/+ZOj5YFwe7+K0WJuv1L4H+2TEHIUz98odR/LFwvgJweDumtlc8LyeIVzye/qZoCGsWIB1uB3kmP9ni/8DW3WGIY/SFiFqJGtFOSLufFb1OTN7akyCkzSS3L8BKKNOpl8b/KaDnAmZuxN76J+BHQBQEc5F/uKoUx0Rvq5y9elIFzzBqbrHjZy1jG+eJyIszAhlFdP8xlhJqQNOrq3ONHU5c39bA+lDNehotG5M7ezeKwxW6MP1zPowXu6lbldjAX19vn8k2Jl2A3mKWB909YhWQHJS4OxfvDjZH2f5DZ1oXr8bcytqO+bZWZ2WLkqNMZAc9Wb4kiyk/Zgh/8uBbLrArUsNCPt7d6PiGu+SDJhGJZdzNQBPXBOBSz0fqwbO9Y0C3RRYQxB+r7+xCxFdi18DX3ZKaQLCbDP1sGlqjePr+eRc2aohyA/R3/E+36TCAcuk7UY11gegv3vqAkUK4wvChMMjIJEGdYexPsmzNjZYpKNjrvCQhiW2fjgbmYyavxoxJNNv8b90S+IXkE8scbVMdYSwtQZt8Zkp+fjCnrrS6hbhhMF8Xajzh6TkqIKguOnvJQipkrYtPFB+Nd64u9NZN7WOSLy8NU/2eBWwBRw//gtM4gmJHYXNUBjQdehDm6poiCuMtgLbDaR1gdSEhL4E2c1hCVl7JIMysNphPIPeNAcqm9a/NDK8FYIiG4VZyLaBnXF2SjlZf6uFXSjskeJBEpPQWOodqo/zLYtGA= X-Forefront-Antispam-Report: CIP:216.228.118.233;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge2.nvidia.com;CAT:NONE;SFS:(13230040)(7416014)(376014)(1800799024)(36860700016)(82310400026)(3023799007)(56012099006)(18002099003)(6133799003)(11063799006);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: I1dmJbAuWdot1uPEJB9lomhR2uHPSPCQWRmhwSVLrTk6TnNkqQ31RPd6GNfRyi6HZK3eezLe+seNwlQhttoUqp6L4KTgc1Ki8thXqWz3Q5AQ8/OmqAhhuqbl+KFCYuUAAfAKtPL0cVs79peNjQUg5p8Ab5p6mHAH5yABCK6A/l9muYtTCAbsz3rcgAVK5pAeCsRCF3Mwv8/sqjUpywxD0BgdECkoGr8JjUIM6rJEfqYxttyltdVTerL2KytL1vXEQFjKQIHslfQw7KLuYMHjN1ZGUFd4eIhsfcC0VOlEVKEhHAMbahxZ0IHyi163IT8+wbMvnS9FENa3vi5QizfxP+OjSnjpBmHjiWwfGTKDEt6EFixb7p6hwym2Q3ijDTwfwUD++v1AuGtPHl6psJVsfMa66LdhBzkwVvXDutELJvfTWsS4VRE8oQ7GQZJhtt9s X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 Jun 2026 06:15:48.5756 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 16b326e5-c954-457a-e296-08debfa5396f X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.233];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CH1PEPF0000AD7F.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV3PR12MB9402 Hi, This is V7 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 --- V7: - Drop cache aligned memcpy patch as it no longer shows benefits on further testing on other hosts. - For XDP, pull at most ETH_HLEN bytes into linear part. - Fix skb pull length calculation for XDP (Amery Hung). - Switched from min_t() to min() to avoid skb->data_len 16 bit truncation (David Laigh). - Improved commit message for last patch to make it clear that the benchmark is not on native XDP (Sashiko). V6: https://lore.kernel.org/all/20260507095330.318892-1-tariqt@nvidia.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 .../net/ethernet/mellanox/mlx5/core/en_rx.c | 33 ++++++++++++------- 1 file changed, 22 insertions(+), 11 deletions(-) base-commit: 8415598365503ced2e3d019491b0a2756c85c494 -- 2.44.0