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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: YKD/iSwxKKW4WJNQ0qGz0PJl9dYPDv+rA7V28Be8OtVnd64oJqb7j6vqRE5rl8W+iziUll2l4JYBlihsy+peX4zexVxmlrdOpWDagoIxotjGtaXieICeDy7iW9zBXS/TE3GDNv9O9QluZXC8gQwvEOH6/aNU8Lao1QuLX6nVaOW77xtthpRSWVGylVVkYgyod2uvy001jOtUlpdnBI0+sGbJ1JKLH1tTbFAPVe3XsH9nuZM5qDPmDpJurIgmPLcgF48gIUGjI5xCvjgO9UXKSQhpfz1AqeSZS7hfRSHdlLjxvy+1qwQPthVl2AVcqzqlOh0LV4E/2j68fw4OAfnUE1+SW1mOcYKXwb7w3/F5lEGz++l44gObOvxjEW42K3rhBDrx8TsTO0eC+5BCtrGmWH+PLjaaIqdhTLXPzWBvMO8EXyUMpdO3elJYxwrLbWjz X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Oct 2026 12:08:25.0201 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 45f23678-c2c6-481f-5e22-08df22103152 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: BN2PEPF000044AA.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ2PR12MB8110 From: Peter Colberg Add a method to return the number of Virtual Functions (VF) enabled for a Physical Function (PF). Expose the query in the PCI core callback context and return u16, matching the type of the VF count stored by the PCI core. Signed-off-by: Peter Colberg Signed-off-by: Zhi Wang --- rust/kernel/pci/iov.rs | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/rust/kernel/pci/iov.rs b/rust/kernel/pci/iov.rs index 616ac40b8bcd..4ed6ba658e81 100644 --- a/rust/kernel/pci/iov.rs +++ b/rust/kernel/pci/iov.rs @@ -20,6 +20,16 @@ pub fn is_virtfn(&self) -> bool { } } +impl Device> { + /// Returns the number of Virtual Functions (VF) enabled for a Physical Function (PF). + pub fn num_vf(&self) -> u16 { + // SAFETY: `self.as_raw()` is valid and this call runs in the PCI core callback context. + unsafe { bindings::pci_num_vf(self.as_raw()) } + .try_into() + .expect("pdev->sriov->num_VFs is u16") + } +} + impl Device> { /// Enable the Single Root I/O Virtualization (SR-IOV) capability for this device, /// where `nr_virtfn` is number of Virtual Functions (VF) to enable. -- 2.53.0