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Wed, 2 Jul 2025 10:26:58 -0700 From: Dragos Tatulea To: , , Saeed Mahameed , Tariq Toukan , Leon Romanovsky , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni CC: Dragos Tatulea , , , , Subject: [RFC net-next 4/4] net/mlx5e: Enable HDS zerocopy flows for SFs Date: Wed, 2 Jul 2025 20:24:26 +0300 Message-ID: <20250702172433.1738947-5-dtatulea@nvidia.com> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250702172433.1738947-1-dtatulea@nvidia.com> References: <20250702172433.1738947-1-dtatulea@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: AnonymousSubmission X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MWH0EPF000971E5:EE_|MN2PR12MB4128:EE_ X-MS-Office365-Filtering-Correlation-Id: 27781aa9-70f9-4935-540c-08ddb98db197 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|1800799024|82310400026|7416014|376014|921020; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?iC4q1Wx0UCeMQrFaXzwvFpoVBl4YIORitnCyCzSDrZJ8yl6P0AjXodCc7I5W?= =?us-ascii?Q?JibGX9ndedUQW78k1plPxUR0b/CbImOELpnpLFqxRl8V/6nm+CJlbIBJWxWU?= =?us-ascii?Q?GeDsYSOTecp45UJ/ZfLc0/eW6SEqw5YZkCVgRJBjxbFHn3fpFazOa761qf6j?= =?us-ascii?Q?GISFbSlbsBQ9XlFnkJd9KjzylRJhxQBEoIV6PDkzUOPdHpEcJ7535hwNHsSF?= =?us-ascii?Q?atI41q41VJWSLLUP9eyLhflo4dLFDuLpkkWtDKOeS98NGQp9LEehXNEqNnO3?= =?us-ascii?Q?fN15uhWTX0XgKDHVdF8FynRTLQ1/vcCCE7e0gurmkYhCssjYIOUjbzQAc5TT?= =?us-ascii?Q?xMyu1RXfQ0pTWxbwTQIuXgKZg+HbcH5a8PkOIjE9ipzf0pMlgXNWIyqh9SUK?= =?us-ascii?Q?OITl3vMPrPgqESmpehoMgBjBUxO7LZu5ulUlYz2aj8xMlH+MmacYUGNOrOF5?= =?us-ascii?Q?ahvrBaeDKJS5IHZKSkEkWFbXw/fzWVOgES7RcQttawQpk+UFPJt1h/LKOVdW?= =?us-ascii?Q?OHPm4+KTHn1K6WMKflrN91vueJplLJZWnNBvpj/foQ3vLsh8eosbon2BcK+t?= =?us-ascii?Q?+TGHYY2Y9CsZhJgYL6XBkl/n/HyLM4AQW7eyzGVdclZw3qfMzyuaVallYLCP?= =?us-ascii?Q?xB+2iAdIdtczrlOKL9L0TmdXmY64F31y2sEcm8beBBLzxecbCWDZVzhx9iI4?= =?us-ascii?Q?yrhxLvd92f4sw1TNc5uI0yW8nRBtMnyKMzx5dJPMS2og/Bru5qduZbXMUpCG?= =?us-ascii?Q?hBUhDyQHa+qItUUBD++9P0CV7ytfWgkLG6+7FPPn4xnG+OQBNaKQeVFYVE4W?= =?us-ascii?Q?iG3y411XGbUIsAIt2lzlNyYVdNnbU1XH+4oRs9fLdAy6HytFt4shgwfnrTUG?= =?us-ascii?Q?g6EbuaMNANUjux3P0danN20ARo6QyjVhDbgkT+XmYHyQ86md1q4LnzkMp3eF?= =?us-ascii?Q?QbbvCaZ0edALeBEJeDC7N3ryP53jurUYKiUXC00d2a1F24yRWI2TMmtp23hg?= =?us-ascii?Q?CsKQ7UIKzoMdCnM7aLA4b5Btjr6d/0Jv3BbpZyRwdba0vWrDREV5gf6iBj4S?= =?us-ascii?Q?B2qnPtt2HkmLLQO7dSKbGXc7zxR6PbwmbBKho7v5S93EfIlT5reVcQWUeP6w?= =?us-ascii?Q?5704QtryTPNawv9mKnFSExnv+KNhIOduValpv7E8imOgcodl4u+ByYLrigXM?= =?us-ascii?Q?+WX1FlWzw7F605jlr+labJbbnCNLp1bOfWrvhoPmT6CN/fes+KJOD+TlOJ7U?= =?us-ascii?Q?RRZURpQv7Ct2LZzfJDaPkCQd57UHUG//c/tAbBltKSQ5vV8yS4yA5tXteFCj?= =?us-ascii?Q?EnVkHrrFPM0R68qzpK+4Q3Zr4mCjfBkiQnlitnCi/biMzTGOkeTBkuDaeouV?= =?us-ascii?Q?qHh8z1RxY61ngHbTUHMMtw0ve0wV4EnVZbUPo+9iBVG5XT17OFhaxWFxc/Wj?= =?us-ascii?Q?5bhyZZuDTVeUNLoT8aD9WpJymHKEzWkiFX+b+agX7Jv5zom3d9U5qsTs5bM2?= =?us-ascii?Q?DW4pBsVPVjdhAJKpBshJ/+Wch4rVGGRu6p0kLBgzm0ZekVSopdh7na3BwQ?= =?us-ascii?Q?=3D=3D?= 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)(36860700013)(1800799024)(82310400026)(7416014)(376014)(921020);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Jul 2025 17:27:17.6041 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 27781aa9-70f9-4935-540c-08ddb98db197 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: MWH0EPF000971E5.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4128 An SF has an auxiliary device as a parent. This type of device can't be used for zerocopy DMA mapping operations. A PCI device is required. Use the new netdev dma_dev functionality to expose the actual PCI device to be used for DMA. Always set it to keep things generic. Signed-off-by: Dragos Tatulea --- drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index e8e5b347f9b2..c4e45205fba4 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -5841,6 +5841,9 @@ static int mlx5e_nic_init(struct mlx5_core_dev *mdev, /* update XDP supported features */ mlx5e_set_xdp_feature(netdev); + /* Set pci device for dma. Useful for SFs. */ + netdev->dma_dev = &mdev->pdev->dev; + if (take_rtnl) rtnl_unlock(); -- 2.50.0