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vfio: Add capability chain helpers

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Allow sub-modules to easily reallocate a buffer for managing
capability chains for info ioctls.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Alex Williamson
2016-02-22 16:02:33 -07:00
parent c84982adb2
commit d7a8d5ed87
2 changed files with 65 additions and 0 deletions
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11
include/linux/vfio.h
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@@ -92,6 +92,17 @@ extern int vfio_external_user_iommu_id(struct vfio_group *group);
extern long vfio_external_check_extension(struct vfio_group *group,
unsigned long arg);
/*
* Sub-module helpers
*/
struct vfio_info_cap {
struct vfio_info_cap_header *buf;
size_t size;
};
extern struct vfio_info_cap_header *vfio_info_cap_add(
struct vfio_info_cap *caps, size_t size, u16 id, u16 version);
extern void vfio_info_cap_shift(struct vfio_info_cap *caps, size_t offset);
struct pci_dev;
#ifdef CONFIG_EEH
extern void vfio_spapr_pci_eeh_open(struct pci_dev *pdev);