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Wed, 22 Oct 2025 23:44:45 -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 , "Carolina Jubran" , Dragos Tatulea Subject: [PATCH net-next 0/7] net/mlx5e: Reduce interface downtime on configuration change Date: Thu, 23 Oct 2025 09:43:33 +0300 Message-ID: <1761201820-923638-1-git-send-email-tariqt@nvidia.com> X-Mailer: git-send-email 2.8.0 Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000EE33:EE_|DS2PR12MB9824:EE_ X-MS-Office365-Filtering-Correlation-Id: cc034d61-4bbb-4be3-7cbb-08de11ffb20e X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|36860700013|376014|1800799024; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?FRX1wDaVR4K1YJNz+mdzyHcgEFxvL3tfYqGdwGzDxPnkF/1UOYoebeku7SGQ?= =?us-ascii?Q?niBZXBZcx9/rCfH0fpIk/VW6K3w6ZdRcj3DMP57Pq6NzWavzdNps6VKU3Ey7?= =?us-ascii?Q?W0xMN9HxRluxs+qL2WupSt6ulzSMLPissrQWW/ojx2rDFYVrsUxMDQ6pjqHs?= =?us-ascii?Q?jyNu6Xb1UWgu+tSnU/f2t5c4jvka9+uI55jFhIWWxD2B/JzLa8zHmmlnn1kB?= =?us-ascii?Q?LlJ5QdiynAWau67lvaLn8RpBRkhoPNjPrprcV8+XZqywcohqtlMwAUZkFk7H?= =?us-ascii?Q?ps9mPurev4uUXfG8ikMkBVFMqPxkN9dXfTZWCQOru3fCIGfI2HF0MnP/IziA?= =?us-ascii?Q?m5SvsdDyWXOt1rf8kGY/j6l0V3HnSEbovD/l5eYcjsHV28wQSUHMOFbbA7iQ?= =?us-ascii?Q?0KAx0hlJnouZjHSMxOmtmJi2Zx9pTg24pe+0sx+ySrpoaukyzAcr/KUwCNlp?= =?us-ascii?Q?nRgG/rqJd8+au4pU+O0x6AnHX9j1qwK9Ghw1tbDKzDZ73k07UmeH0un7tL8j?= =?us-ascii?Q?0USiKqO8vnv2B2r1pibLAQheH8uhoKgu3iwF0XtBCg9Ny/fP2RykMtpYPop6?= =?us-ascii?Q?33Y+dFSccpElGWt2Ez07kn/Y4Eke85dPyezzju8sO3NudM8yljavOHIq7PmL?= =?us-ascii?Q?S1BR3pZBbjZ4DMm5C9XkPRrpyDOA7c6JXDG8iEHhAZCiBXyPft17zJymXC7I?= =?us-ascii?Q?Z81O71z+hhoz478+7oeTQmYW7Gh+kc0w+Ue3dPec/nzrfWtHYnx2CVTXxNnw?= =?us-ascii?Q?fxzwulLy0MTBgH6SAQ1qStTfoRarx4fVbNOuQov3CHo/pe8fNevUrUnbcfOH?= =?us-ascii?Q?hCQqlVKJ+shjdX/jeTS7ARx+p0JXIzFvBZzLJvzBThFRCaLtm+Pi3vi3nOic?= =?us-ascii?Q?f48v4+godSx/1q2VjsHh5Qv2yj5xhyTNxdVq/Pm17SzCm0ZGsKuo1q79nPrC?= =?us-ascii?Q?K9DymRroVqWqr32X/DK9klTJqh3oX10FKY2hsQQ/5/+UT0FpBiF7vgkgtsmS?= =?us-ascii?Q?9i+nXQlssfXcoTH7atjvyNroDMe9n6i7R8Z6kLRh44pF2BdOem8s4KltpUtK?= =?us-ascii?Q?c9eDnyT+JfRGTrLz1hjAgDkgA6MLw0CNhjufG/4dMYy4JAnsyy5GNsC8QB2U?= =?us-ascii?Q?FB0pX7alhAa6mLfzyPdpH9RiZIIAPw6bEQzCR0eo1D/OI7ztqDKlDK9DPsDO?= =?us-ascii?Q?TQ1XGt+BBvDg1e0Yf/hGy5LFx1r1/oTNaMiVFqA+ZUBdKpLzYImiWtGyFEJs?= =?us-ascii?Q?3Jux+05Kbh+MvlhPjLByObCGUpTyUUWAW4Z9Czql3hJ7tEKV1BoAsE661Hw9?= =?us-ascii?Q?EytA9jHl5kkNF1yuk7W+NSOf6O6oT9LB3pUUl/V13uMxnHFR3XyBM+hqv5ZE?= =?us-ascii?Q?zCx/pjv5KczTZ4/aLWhsgwkec4C+gmyPvgkAde1eeZEMwDBHSiaUofExihhK?= =?us-ascii?Q?0ytjEjMUUJ3pag7SFyuMj7gjK20bFgcBw+YU4LV+piAVB1x8WGjlzJSLnyFb?= =?us-ascii?Q?qzPO9kvJUpvyap7mi0LcMTJgs96apuMODdqOOIvZEHiDRJGflDCf6TTPyE4c?= =?us-ascii?Q?SMg1elZ85XnYyWF8uVI=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)(82310400026)(36860700013)(376014)(1800799024);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Oct 2025 06:45:03.3654 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: cc034d61-4bbb-4be3-7cbb-08de11ffb20e 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: CY4PEPF0000EE33.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS2PR12MB9824 Hi, This series significantly reduces the interface downtime while swapping channels during a configuration change, on capable devices. Here we remove an old requirement on operations ordering that became obsolete on recent capable devices. This helps cutting the downtime by a factor of magnitude, ~80% in our example. Perf numbers: Measured the number of dropped packets in a simple ping flood test, during a configuration change operation, that switches the number of channels from 247 to 248. Before: 71 packets lost After: 15 packets lost, ~80% saving. Regards, Tariq Tariq Toukan (7): net/mlx5e: Enhance function structures for self loopback prevention application net/mlx5e: Use TIR API in mlx5e_modify_tirs_lb() net/mlx5e: Allow setting self loopback prevention bits on TIR init net/mlx5: IPoIB, set self loopback prevention in TIR init net/mlx5e: Do not re-apply TIR loopback configuration if not necessary net/mlx5e: Pass old channels as argument to mlx5e_switch_priv_channels net/mlx5e: Defer channels closure to reduce interface down time drivers/net/ethernet/mellanox/mlx5/core/en.h | 4 +- .../net/ethernet/mellanox/mlx5/core/en/rss.c | 2 + .../net/ethernet/mellanox/mlx5/core/en/rss.h | 1 + .../ethernet/mellanox/mlx5/core/en/rx_res.c | 7 +++ .../ethernet/mellanox/mlx5/core/en/rx_res.h | 1 + .../net/ethernet/mellanox/mlx5/core/en/tir.c | 29 ++++++++++-- .../net/ethernet/mellanox/mlx5/core/en/tir.h | 3 ++ .../ethernet/mellanox/mlx5/core/en_common.c | 46 +++++++++---------- .../net/ethernet/mellanox/mlx5/core/en_main.c | 31 +++++++++---- .../ethernet/mellanox/mlx5/core/en_selftest.c | 4 +- .../ethernet/mellanox/mlx5/core/ipoib/ipoib.c | 7 ++- 11 files changed, 94 insertions(+), 41 deletions(-) base-commit: d550d63d0082268a31e93a10c64cbc2476b98b24 -- 2.31.1