[PATCH 2/8] rust: pci: add is_physfn(), to check for PFs

Peter Colberg
2025-11-19T22:19:21Z

Add a method to check if a PCI device is a Physical Function (PF).

Signed-off-by: Peter Colberg <pcolberg@redhat.com>
---
rust/kernel/pci.rs | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/rust/kernel/pci.rs b/rust/kernel/pci.rs
index c20b8daeb7aadbef9f6ecfc48c972436efac9a08..814990d386708fe2ac652ccaa674c10a6cf390cb 100644
--- a/rust/kernel/pci.rs
+++ b/rust/kernel/pci.rs
@@ -409,6 +409,12 @@ pub fn resource_start(&self, bar: u32) -> Result<bindings::resource_size_t> {
Ok(unsafe { bindings::pci_resource_start(self.as_raw(), bar.try_into()?) })
}

+ /// Returns `true` if this device is a Physical Function (VF).
+ pub fn is_physfn(&self) -> bool {
+ // SAFETY: `self.as_raw` is a valid pointer to a `struct pci_dev`.
+ unsafe { (*self.as_raw()).is_physfn() != 0 }
+ }
+
/// Returns `true` if this device is a Virtual Function (VF).
pub fn is_virtfn(&self) -> bool {
// SAFETY: `self.as_raw` is a valid pointer to a `struct pci_dev`.

--
2.51.1