From d7a8d5ed876970ac7f9bafbb6708500a7838c1d7 Mon Sep 17 00:00:00 2001 From: Alex Williamson Date: Mon, 22 Feb 2016 16:02:33 -0700 Subject: vfio: Add capability chain helpers Allow sub-modules to easily reallocate a buffer for managing capability chains for info ioctls. Signed-off-by: Alex Williamson --- include/linux/vfio.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux/vfio.h') diff --git a/include/linux/vfio.h b/include/linux/vfio.h index 610a86a892b8..0ecae0b1cd34 100644 --- a/include/linux/vfio.h +++ b/include/linux/vfio.h @@ -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); -- cgit v1.2.3