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Mon, 22 Sep 2025 02:19:09 -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 , "Jesper Dangaard Brouer" , Ilias Apalodimas , , , , Gal Pressman , Dragos Tatulea Subject: [PATCH net-next 2/2] net/mlx5e: Clamp page_pool size to max Date: Mon, 22 Sep 2025 12:18:35 +0300 Message-ID: <1758532715-820422-3-git-send-email-tariqt@nvidia.com> X-Mailer: git-send-email 2.8.0 In-Reply-To: <1758532715-820422-1-git-send-email-tariqt@nvidia.com> References: <1758532715-820422-1-git-send-email-tariqt@nvidia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH1PEPF0000A345:EE_|PH8PR12MB7374:EE_ X-MS-Office365-Filtering-Correlation-Id: 84ca2801-f769-4e27-522c-08ddf9b91fd6 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|82310400026|7416014|376014|1800799024; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?KXMW+9TO2pD+Hlh3+CfDGBawWWBGINfCt0Gm+MxGRJaqS4v39yMJ/LD5aMFk?= =?us-ascii?Q?6OWCNptMtXimZ9ekKcce7MPjuhQbJxSuVqhZUhnkRO3bY6qGw6Vwy1732NQs?= =?us-ascii?Q?QCYwa9vNFAGUUu5u10W/g8soyew/QfMOtAoryT08vMYTxzo4MeXrQ1YxDfVe?= =?us-ascii?Q?GhsrLkX07kez7UymdAAwqjxSZh33IYfa9rMQ5R9LCZ6bsfQv95572HZlzO+4?= =?us-ascii?Q?F3Gh6O7zSvLjl162sTbfIqeTZ1wFyIn4JX/Epr6NqXkQNlOhIbejtqebtClk?= =?us-ascii?Q?YOZjKW3D0EAS7Rj57KaYAZQv03jG01xTkH9QG7S7YoIludpOpQVR4B0dobnF?= =?us-ascii?Q?bbXpWXd6DTAIyuxa96FNZ4UW25xDOxmKkU6ruZ0yVlvrpcGo4DG8++kgdO8h?= =?us-ascii?Q?VaDwXXapKSbltn1JG0lJfFhBgr7l1j7Q3oIxY1E66gZRCKBK1t9UqHQnACY6?= =?us-ascii?Q?0oNQEFdt2Vr5hScV2oodRm4BKXT5VynkQuqAvLGe0sXHfxDHfoKXdHZx6CjG?= =?us-ascii?Q?KwfTespCeE97MbQhtu89MHE2Kx9hB9TEy08cefi/RJPCs4iaJ2q387/4QASZ?= =?us-ascii?Q?OcTc6Lqns4DHB7GsTKWlJFeF/C9OSppWBqYNZWvJR5ljdjnAXd7xf5Q9KtG9?= =?us-ascii?Q?iwr01WDYRH/Y14wwaNPZ8XBVNvB0D8oTu9YL+pycdIc6I3hkaRe/MSk5kA+f?= =?us-ascii?Q?43RvNAsfvdyJPc6BDOqFvrZEni1QyOYxlSSCxF0bFx/iuQ7okigZvdSYGv0a?= =?us-ascii?Q?B2PShjuYmifAGXpRsbA5qRoxKoaf4+ej9sjgf3XtDowxLE5xVQnNMkw9UG6l?= =?us-ascii?Q?A8e37poVYpG19CrkIHWITJoobFFLewaD+jeHu7j9hQZ0O+7ve1FuZKV6kzp8?= =?us-ascii?Q?BW+bclZ33YaqUc5n5Yg0qDmJkCJY9ccIJQBX9sxA9BYfshbu4ni6Fj7vNkC/?= =?us-ascii?Q?6D5pRoBihEthwGTLLkvnvM26kI7VsCeN1fHughi/QiFI8LPaGERHBZLE+cuW?= =?us-ascii?Q?NSCIyWYGV471ONW1gmnqPQxxQbhB0pWpQHP5Ho6ZyDbtb3WrBo6zyKX6OJjD?= =?us-ascii?Q?gGUGa9bNcG6MC9A/GznjJPSiC9zrcx5s5qypJMopY4OLL1kZD8ATvT0Db7Od?= =?us-ascii?Q?wWvgcPsBA+2SEXwUkjob7sobPRHKaQy27XCn3OvdPN/q4EErP+Ap6Ausd5Mw?= =?us-ascii?Q?hh8wcXNRpkGJPIF4VgTW5T5Fn0i7f/lYGVGcBnr4k/IzsYnpzTZDP8kDCr7M?= =?us-ascii?Q?lpJLKCwo4/IZ+O9aV7SmgpcUYSzIwKLPLzDgtICJZi/LtfkOKI+5iy9e7/E1?= =?us-ascii?Q?0M+en/WfgheZy9Shlt+kWLJZoiQf2bfbMibztZuSaMB3RnrW3tkIauI5hUlR?= =?us-ascii?Q?DBWhw0sbCH2+C9WKn98gLRHMYkdSXY7X53oSZ3inyt3OWICWIo6ON24nVeLg?= =?us-ascii?Q?KldHuB6ck2hyPS8FJw+xuiSTP6VJGFjStF6W4btKaRkAzExzeZl3TP1CGJgN?= =?us-ascii?Q?n1GHstRhEc0i5oy/sSw/WWhcbmp9nk43O4wx?= 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)(36860700013)(82310400026)(7416014)(376014)(1800799024);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Sep 2025 09:19:25.3695 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 84ca2801-f769-4e27-522c-08ddf9b91fd6 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: CH1PEPF0000A345.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR12MB7374 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Dragos Tatulea When the user configures a large ring size (8K) and a large MTU (9000) in HW-GRO mode, the queue will fail to allocate due to the size of the page_pool going above the limit. This change clamps the pool_size to the limit. Signed-off-by: Dragos Tatulea Signed-off-by: Tariq Toukan --- drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/ne= t/ethernet/mellanox/mlx5/core/en_main.c index 5e007bb3bad1..e56052895776 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -989,6 +989,8 @@ static int mlx5e_alloc_rq(struct mlx5e_params *params, /* Create a page_pool and register it with rxq */ struct page_pool_params pp_params =3D { 0 }; =20 + pool_size =3D min_t(u32, pool_size, PAGE_POOL_SIZE_LIMIT); + pp_params.order =3D 0; pp_params.flags =3D PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV; pp_params.pool_size =3D pool_size; --=20 2.31.1