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Tue, 16 Sep 2025 07:13:01 -0700 From: Tariq Toukan To: Eric Dumazet , Jakub Kicinski , Paolo Abeni , Andrew Lunn , "David S. Miller" CC: Jiri Pirko , Jonathan Corbet , "Leon Romanovsky" , Jason Gunthorpe , Saeed Mahameed , Tariq Toukan , Mark Bloch , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , "John Fastabend" , , , , , , Gal Pressman , Cosmin Ratiu , Dragos Tatulea , Jiri Pirko , Jason Gunthorpe Subject: [PATCH net-next V2 09/10] devlink: Add a 'num_doorbells' driverinit param Date: Tue, 16 Sep 2025 17:11:43 +0300 Message-ID: <1758031904-634231-10-git-send-email-tariqt@nvidia.com> X-Mailer: git-send-email 2.8.0 In-Reply-To: <1758031904-634231-1-git-send-email-tariqt@nvidia.com> References: <1758031904-634231-1-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: SN1PEPF0002BA4D:EE_|DM4PR12MB6325:EE_ X-MS-Office365-Filtering-Correlation-Id: a3450aaf-1f69-4063-3f52-08ddf52b305e X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|376014|7416014|36860700013|1800799024; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?ACTnZJQyVpoSRNH2cnJXwcGaR5o8pBgVCqSTke7Lr+/W+eEJ+RJHtDpV/PFJ?= =?us-ascii?Q?K6T4ieu13R0n59Q1y/paC4Gw5QwCFJEcshZ7GZkq2cGuB2ezkTuPNBAb9V/7?= =?us-ascii?Q?DeXoCwSgL5+WeI8wVTKX2NsiOQ821JBQ9tGTFyPFVrVjHU3N5ztK7WpE9A1E?= =?us-ascii?Q?bqrNzrWIDtxNPjG8Ep6UcIqYtRROmlzGbRrALEV6TATzFlg4tRl0WuLf3zlb?= =?us-ascii?Q?Fm8C0XPtdgK0m56noGTmB/hNWC6izkybU0BoqhJIlJsARwc5jhx2KjFwz/BM?= =?us-ascii?Q?AcsPlgrwB4Bx/Rna4FVKEF6r6hatSKHdcGrwSsOxCcNJzbNEvU1gAWwp48eK?= =?us-ascii?Q?6ZQr7YNrG2VVBBU0a+JVNj5NXUL4BN9dTi3Sv+Tgu8tlwqShz9u5kytljfIi?= =?us-ascii?Q?5TM8BMwvXG3Uh8CNJqAeCy3xz7Ev4gWW2mNtgrmubV/ulLs2kJAV28AfQ2Ym?= =?us-ascii?Q?qvUveOCsfGmL7afAJB9DRQzi8ozNBKKM62mlydnXAg3GMChune007oPE2bhq?= =?us-ascii?Q?7IIrVj51v/9SmXH5DTrD/RX0lm2NN3YV9x9xLWfLfxIEj8KDiCnH/yQ51Afa?= =?us-ascii?Q?mOKQMqgPXJSshGEhNLuxhta9tuzEyPkmRs5ZGsCmCdPk4eTAkiHCK4y+XKNl?= =?us-ascii?Q?tjhx73beXDM0eVmI+va9GGJ0Lt8ejDYx7weSoIV9d9YXVsmXyK+Qv7BRWk6M?= =?us-ascii?Q?o3+XlC6CoD6fciB2aOI5p+t/AglSjyntYFHqlcmtCP4fVjXoCsf8ClGidIsk?= =?us-ascii?Q?zg4mTT8Msp4hpH6ay9ggfv30brSHTWeGGhECptzK3tgNomvjTU974jG/kHJf?= =?us-ascii?Q?Ab3a6maB4qoPrRicmDNM1tg0/VxQa4kHkkDg9+Ulq3yTu9XG16BtSyHtXC9f?= =?us-ascii?Q?FJQXrNFCb7fq1NJS4oop2Frg3DJXZLTExmXKu+bwtdC7/FBAEEBI9Vj6N+xD?= =?us-ascii?Q?VVXSaSy8gSvGPZS7p8wkcXFknjvMMxGoLlosAnT2FnYtTFiAhtyk3K+WLSrC?= =?us-ascii?Q?dJTXbkRjuYC3vQPo/TuXz2iKo1hYJbMtjULfi902lQMUyP3Bl753HbW9dWIZ?= =?us-ascii?Q?5Z98hxvYC1wSpY5UTpIj1WPQxEVDPqa8HOHJNoixJQ2xtm1Kuom/i7i1Tv5t?= =?us-ascii?Q?Y1vURcN/R6fPUo+s44R4TLX8ff4FZa+9x9z+56YxbW9Nt1XjvosIi/QEHGLi?= =?us-ascii?Q?lE+AwV5HYZ5X8lj3Sh9P5xhdt4MOsiErQXvVkU4bpL19tYad2GD8vj+gwC4r?= =?us-ascii?Q?MKPAEQ1kK2JALq4G0Ud7LHFrbr3qwG6u4aYk4yXgwlV4ICWX16Jejx1mwjPb?= =?us-ascii?Q?WdsjPZ/XLWDYt21bdrcNYWxm01e8zuzuNsFGza+Fc/g13YKTpACRYRKcJyTM?= =?us-ascii?Q?M8Hdm4NZ8eIAN1GOEEXnBiJru98F/GDrgeqtM+LtSnrfXEZUkC2Rp4gmBG3Y?= =?us-ascii?Q?ux6js/a5577C4cRxJ/MDd9CnpnINFsBRj+ONYFeERX2Ch81ONE4xUYW+wjWr?= =?us-ascii?Q?hu8lZNAfZ7xMxt0C8ms8r90xP6JdRsKjcnOh?= 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)(376014)(7416014)(36860700013)(1800799024);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Sep 2025 14:13:19.9249 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a3450aaf-1f69-4063-3f52-08ddf52b305e 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: SN1PEPF0002BA4D.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB6325 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Cosmin Ratiu This parameter can be used by drivers to configure a different number of doorbells. Signed-off-by: Cosmin Ratiu Reviewed-by: Dragos Tatulea Reviewed-by: Jiri Pirko Signed-off-by: Tariq Toukan Reviewed-by: Simon Horman --- Documentation/networking/devlink/devlink-params.rst | 3 +++ include/net/devlink.h | 4 ++++ net/devlink/param.c | 5 +++++ 3 files changed, 12 insertions(+) diff --git a/Documentation/networking/devlink/devlink-params.rst b/Document= ation/networking/devlink/devlink-params.rst index c51da4fba7e7..0a9c20d70122 100644 --- a/Documentation/networking/devlink/devlink-params.rst +++ b/Documentation/networking/devlink/devlink-params.rst @@ -148,3 +148,6 @@ own name. - The max number of Virtual Functions (VFs) exposed by the PF. after reboot/pci reset, 'sriov_totalvfs' entry under the device's s= ysfs directory will report this value. + * - ``num_doorbells`` + - u32 + - Controls the number of doorbells used by the device. diff --git a/include/net/devlink.h b/include/net/devlink.h index 8d4362f010e4..9e824f61e40f 100644 --- a/include/net/devlink.h +++ b/include/net/devlink.h @@ -531,6 +531,7 @@ enum devlink_param_generic_id { DEVLINK_PARAM_GENERIC_ID_ENABLE_PHC, DEVLINK_PARAM_GENERIC_ID_CLOCK_ID, DEVLINK_PARAM_GENERIC_ID_TOTAL_VFS, + DEVLINK_PARAM_GENERIC_ID_NUM_DOORBELLS, =20 /* add new param generic ids above here*/ __DEVLINK_PARAM_GENERIC_ID_MAX, @@ -598,6 +599,9 @@ enum devlink_param_generic_id { #define DEVLINK_PARAM_GENERIC_TOTAL_VFS_NAME "total_vfs" #define DEVLINK_PARAM_GENERIC_TOTAL_VFS_TYPE DEVLINK_PARAM_TYPE_U32 =20 +#define DEVLINK_PARAM_GENERIC_NUM_DOORBELLS_NAME "num_doorbells" +#define DEVLINK_PARAM_GENERIC_NUM_DOORBELLS_TYPE DEVLINK_PARAM_TYPE_U32 + #define DEVLINK_PARAM_GENERIC(_id, _cmodes, _get, _set, _validate) \ { \ .id =3D DEVLINK_PARAM_GENERIC_ID_##_id, \ diff --git a/net/devlink/param.c b/net/devlink/param.c index 33134940c266..70e69523412c 100644 --- a/net/devlink/param.c +++ b/net/devlink/param.c @@ -107,6 +107,11 @@ static const struct devlink_param devlink_param_generi= c[] =3D { .name =3D DEVLINK_PARAM_GENERIC_TOTAL_VFS_NAME, .type =3D DEVLINK_PARAM_GENERIC_TOTAL_VFS_TYPE, }, + { + .id =3D DEVLINK_PARAM_GENERIC_ID_NUM_DOORBELLS, + .name =3D DEVLINK_PARAM_GENERIC_NUM_DOORBELLS_NAME, + .type =3D DEVLINK_PARAM_GENERIC_NUM_DOORBELLS_TYPE, + }, }; =20 static int devlink_param_generic_verify(const struct devlink_param *param) --=20 2.31.1