diff options
| author | Zhi Wang <zhiw@nvidia.com> | 2026-07-22 10:39:09 +0300 |
|---|---|---|
| committer | Danilo Krummrich <dakr@kernel.org> | 2026-07-23 14:20:24 +0200 |
| commit | 6afbbc27f582b873eb42744b09d57aeefc9e5628 (patch) | |
| tree | 77e9ca331d4d98c3fb37f12a8fc249e45f68a95d /rust/helpers | |
| parent | 7cffd051ae546e8644bf9bf7410b63541f666845 (diff) | |
rust: pci: add sriov_get_totalvfs() helper
Expose pci_sriov_get_totalvfs() to Rust PCI drivers so they can query
how many SR-IOV VFs a device supports.
Use a conditional C helper because the !CONFIG_PCI_IOV version of
pci_sriov_get_totalvfs() is a static inline function and is therefore
not emitted into the Rust bindings. Return Option<NonZero<u16>> so Rust
callers must handle the zero value that represents unavailable SR-IOV.
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Cc: Alexandre Courbot <acourbot@nvidia.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: David Laight <david.laight.linux@gmail.com>
Cc: Gary Guo <gary@garyguo.net>
Cc: linux-pci@vger.kernel.org
Link: https://lore.kernel.org/all/DJHPRE4TGGT8.BUTMYOF5YE05@nvidia.com/
Signed-off-by: Zhi Wang <zhiw@nvidia.com>
Link: https://patch.msgid.link/20260722073913.1807677-3-zhiw@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Diffstat (limited to 'rust/helpers')
| -rw-r--r-- | rust/helpers/pci.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/rust/helpers/pci.c b/rust/helpers/pci.c index e44905317d75..4ebf256dff23 100644 --- a/rust/helpers/pci.c +++ b/rust/helpers/pci.c @@ -24,6 +24,14 @@ __rust_helper bool rust_helper_dev_is_pci(const struct device *dev) return dev_is_pci(dev); } +#ifndef CONFIG_PCI_IOV +__rust_helper unsigned int +rust_helper_pci_sriov_get_totalvfs(struct pci_dev *pdev) +{ + return pci_sriov_get_totalvfs(pdev); +} +#endif + #ifndef CONFIG_PCI_MSI __rust_helper int rust_helper_pci_alloc_irq_vectors(struct pci_dev *dev, unsigned int min_vecs, |