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Wed, 13 Aug 2025 12:20:17 -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 , Dragos Tatulea , Daniel Jurgens , William Tu Subject: [PATCH net-next 1/2] net/mlx5: Query to see if host PF is disabled Date: Wed, 13 Aug 2025 22:19:55 +0300 Message-ID: <1755112796-467444-2-git-send-email-tariqt@nvidia.com> X-Mailer: git-send-email 2.8.0 In-Reply-To: <1755112796-467444-1-git-send-email-tariqt@nvidia.com> References: <1755112796-467444-1-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: CO1PEPF000044F9:EE_|LV8PR12MB9452:EE_ X-MS-Office365-Filtering-Correlation-Id: 0b055214-0ce6-472e-8a8f-08ddda9e7fe7 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|82310400026|36860700013|1800799024; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?mKX2yXWQbC8qtHiucqVwosV7k7LLK2bUJ0eLGOOSo43f3OQC0nXRRepZcUGY?= =?us-ascii?Q?IP4LvFdfIxJF82TA2+hz6II0XZvE0uq2fh601I4Z/CyJZi+o/eisdJpqadbI?= =?us-ascii?Q?CKRzIGaypW6f3znlteUCHDTY3qHAK2i5WD2yeTySYw3AGeSV5Cl/sWVWHcWv?= =?us-ascii?Q?kXTYM27VDd9LdmGWU+RBa7hN7KOt0zqOgD7Sk/lAqkCHZE0hYF64KY6Ztnlz?= =?us-ascii?Q?4ucRVUvxj1hWTxfYjhHHmm4+1bHvY+kwpWcamA4MKotrH8cnrMGnZrfuPCsC?= =?us-ascii?Q?1ANT996RCL8zhvRFrMB2xVMtSVFpV3kFSV4Jxo/hvungUiwZxKrZuKztKgmN?= =?us-ascii?Q?GvB4zkSYhVBZ5ii2ChsKPKvkAqKLVdSA5QDNwOyMZlcqK9Ng4tx+3M6TY/pa?= =?us-ascii?Q?My/jNReb7nmVXAdtzV/l1+ZVbIG5nUuXhMD3KVLpu3mSUuwFe2SFVpHjmY9J?= =?us-ascii?Q?ipA3xpyX3ckzfbGczCvYhL/WzIx9KyHtDGIe2pqTGxSGvnVQXo/lRIPiq6az?= =?us-ascii?Q?NMJ1B5FN0bIBqIMipSgBya0kfiJlEVZFnrwxo9WWjyKtqRO6jOoO4xdIpCdE?= =?us-ascii?Q?praiYy8E4rTzV2aVnvoh6x3Fimv5cA8NRpDk1blsGLYeVQJSVmxeFcxZIUR6?= =?us-ascii?Q?R2pPNqVtnl8TeaUHlavGKJBMyDqkYP2jIUs73skFmyv8ElftgRoeewUvoHEJ?= =?us-ascii?Q?JbMfK2zzmFnGimTdVwjUzG9Y5RTOKweBq5UsQheuNa+9Hpl/n+qbtLJ/xAlf?= =?us-ascii?Q?eWFjm2uCZ1jWJKfk5PX8Wg2Wt/wdqR2YjYS54+DWUVw5+Y3soWQS04N9ulAf?= =?us-ascii?Q?FVVfd0h+cNDTFiF1MbmkP6VRPHnOZWs+k3Lyie6uAP0GMr3Fs9weiBzG+1FE?= =?us-ascii?Q?NV3HdrGYRwCRFmjCIjb0mh5Hf75Tcbw/Q3ENFipQQnKmKoeZdqFex7RTQV4e?= =?us-ascii?Q?88Hzw3EsUYtZOXwk7iAVg/R9gOwx6TDyD+eFhrHD8bchYdakD1RFS6YbDnFC?= =?us-ascii?Q?RTI90o7LxxfNU0aF6fhWcG6qieVeLSTdsQG/dqs+R3L4lGmYGn3ZwTI6eWZm?= =?us-ascii?Q?HSQSfGg927jHjDoVTlM3Jy1FIFQGOQpOnr+x0zOG2KiPS2ElLjOD++uMMpRL?= =?us-ascii?Q?rYPQGGQR/Ymm1GhJW/m3p6iYA6qgy0A3hKkgsoT0rKy/DkBL6q5cRSLAFn+Y?= =?us-ascii?Q?F8MajvtvPyAb21u0VQHxIZchjhYANb88RQevxjdei8h1GLJY8yQid9VN/4+w?= =?us-ascii?Q?T6EJObxd7cb3FRuCLIxE9ewvMvcpm9zwzzTt0TOpKkJ30Wmcdvr6z+Cg/MfA?= =?us-ascii?Q?hlqvSlBr6y0J06StzPeAQPHmCU4OBt2I62yvt8Wk3FYbxuv5c8VKbLS6vPQe?= =?us-ascii?Q?gd5y/LDue69pUP/4ND3BEaQLpVTz4dDizPTlVQZKvgiGH7URodgsF1W0eTn4?= =?us-ascii?Q?FliGmIUeyqs61yfpgFNuiSrlt5Pa7l93rLfQ6qjE0YH++MsKFRDxM4Wu0g+Z?= =?us-ascii?Q?LdsTuXvqwcOqkSdUQmyTX+tuw4vlYNvr/SIf?= 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)(376014)(82310400026)(36860700013)(1800799024);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Aug 2025 19:20:44.0811 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0b055214-0ce6-472e-8a8f-08ddda9e7fe7 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: CO1PEPF000044F9.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV8PR12MB9452 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Daniel Jurgens The host PF can be disabled, query firmware to check if the host PF of this function exists. Signed-off-by: Daniel Jurgens Reviewed-by: William Tu Signed-off-by: Tariq Toukan --- .../net/ethernet/mellanox/mlx5/core/eswitch.c | 23 +++++++++++++++++++ .../net/ethernet/mellanox/mlx5/core/eswitch.h | 1 + 2 files changed, 24 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/ne= t/ethernet/mellanox/mlx5/core/eswitch.c index 4917d185d0c3..31059fff30ec 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c @@ -1038,6 +1038,25 @@ const u32 *mlx5_esw_query_functions(struct mlx5_core= _dev *dev) return ERR_PTR(err); } =20 +static int mlx5_esw_host_functions_enabled_query(struct mlx5_eswitch *esw) +{ + const u32 *query_host_out; + + if (!mlx5_core_is_ecpf_esw_manager(esw->dev)) + return 0; + + query_host_out =3D mlx5_esw_query_functions(esw->dev); + if (IS_ERR(query_host_out)) + return PTR_ERR(query_host_out); + + esw->esw_funcs.host_funcs_disabled =3D + MLX5_GET(query_esw_functions_out, query_host_out, + host_params_context.host_pf_not_exist); + + kvfree(query_host_out); + return 0; +} + static void mlx5_eswitch_event_handler_register(struct mlx5_eswitch *esw) { if (esw->mode =3D=3D MLX5_ESWITCH_OFFLOADS && mlx5_eswitch_is_funcs_handl= er(esw->dev)) { @@ -1874,6 +1893,10 @@ int mlx5_eswitch_init(struct mlx5_core_dev *dev) goto abort; } =20 + err =3D mlx5_esw_host_functions_enabled_query(esw); + if (err) + goto abort; + err =3D mlx5_esw_vports_init(esw); if (err) goto abort; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h b/drivers/ne= t/ethernet/mellanox/mlx5/core/eswitch.h index b0b8ef3ec3c4..6d86db20f468 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h @@ -323,6 +323,7 @@ struct mlx5_host_work { =20 struct mlx5_esw_functions { struct mlx5_nb nb; + bool host_funcs_disabled; u16 num_vfs; u16 num_ec_vfs; }; --=20 2.31.1