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vfio: selftests: Add helpers to alloc/free vfio_pci_device

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Add a helper, vfio_pci_device_alloc(), to allocate 'struct
vfio_pci_device'. The subsequent test patch will utilize this
to get the struct with very minimal initialization done.
Internally, let vfio_pci_device_init() also make use of this
function and later do the full initialization.

Symmetrically, add a free variant, vfio_pci_device_free(),
to be used in a similar fashion.

No functional change intended.

Signed-off-by: Raghavendra Rao Ananta <rananta@google.com>
Reviewed-by: David Matlack <dmatlack@google.com>
Reviewed-by: Vipin Sharma <vipinsh@google.com>
Tested-by: David Matlack <dmatlack@google.com>
Link: https://lore.kernel.org/r/20260505212838.1698034-8-rananta@google.com
Signed-off-by: Alex Williamson <alex@shazbot.org>
This commit is contained in:
Raghavendra Rao Ananta 2026-05-05 21:28:37 +00:00 committed by Alex Williamson
parent 20face8c75
commit 3152e7f457
2 changed files with 18 additions and 2 deletions
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2
tools/testing/selftests/vfio/lib/include/libvfio/vfio_pci_device.h
View File

@ -38,6 +38,8 @@ struct vfio_pci_device {
#define dev_info(_dev, _fmt, ...) printf("%s: " _fmt, (_dev)->bdf, ##__VA_ARGS__)
#define dev_err(_dev, _fmt, ...) fprintf(stderr, "%s: " _fmt, (_dev)->bdf, ##__VA_ARGS__)
struct vfio_pci_device *vfio_pci_device_alloc(const char *bdf, struct iommu *iommu);
void vfio_pci_device_free(struct vfio_pci_device *device);
struct vfio_pci_device *vfio_pci_device_init(const char *bdf, struct iommu *iommu);
void vfio_pci_device_cleanup(struct vfio_pci_device *device);

18
tools/testing/selftests/vfio/lib/vfio_pci_device.c
View File

@ -421,7 +421,7 @@ static void vfio_pci_iommufd_setup(struct vfio_pci_device *device,
vfio_device_attach_iommufd_pt(device->fd, device->iommu->ioas_id);
}
struct vfio_pci_device *vfio_pci_device_init(const char *bdf, struct iommu *iommu)
struct vfio_pci_device *vfio_pci_device_alloc(const char *bdf, struct iommu *iommu)
{
struct vfio_pci_device *device;
@ -432,6 +432,20 @@ struct vfio_pci_device *vfio_pci_device_init(const char *bdf, struct iommu *iomm
device->iommu = iommu;
device->bdf = bdf;
return device;
}
void vfio_pci_device_free(struct vfio_pci_device *device)
{
free(device);
}
struct vfio_pci_device *vfio_pci_device_init(const char *bdf, struct iommu *iommu)
{
struct vfio_pci_device *device;
device = vfio_pci_device_alloc(bdf, iommu);
if (iommu->mode->container_path)
vfio_pci_container_setup(device, bdf, NULL);
else
@ -464,5 +478,5 @@ void vfio_pci_device_cleanup(struct vfio_pci_device *device)
if (device->group_fd)
VFIO_ASSERT_EQ(close(device->group_fd), 0);
free(device);
vfio_pci_device_free(device);
}