[PATCH v1 5/7] linux-headers: Update vfio.h to include VFIO_DEVICE_FEATURE_DMA_BUF

[Vivek Kasireddy <vivek.kasireddy@intel.com>]

Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
---
 linux-headers/linux/vfio.h | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/linux-headers/linux/vfio.h b/linux-headers/linux/vfio.h
index 79bf8c0cc5..d2177c9cba 100644
--- a/linux-headers/linux/vfio.h
+++ b/linux-headers/linux/vfio.h
@@ -1468,6 +1468,31 @@ struct vfio_device_feature_bus_master {
 };
 #define VFIO_DEVICE_FEATURE_BUS_MASTER 10
 
+/**
+ * Upon VFIO_DEVICE_FEATURE_GET create a dma_buf fd for the
+ * regions selected.
+ *
+ * open_flags are the typical flags passed to open(2), eg O_RDWR, O_CLOEXEC,
+ * etc. offset/length specify a slice of the region to create the dmabuf from.
+ * nr_ranges is the total number of (P2P DMA) ranges that comprise the dmabuf.
+ *
+ * Return: The fd number on success, -1 and errno is set on failure.
+ */
+#define VFIO_DEVICE_FEATURE_DMA_BUF 11
+
+struct vfio_region_dma_range {
+	__u64 offset;
+	__u64 length;
+};
+
+struct vfio_device_feature_dma_buf {
+	__u32	region_index;
+	__u32	open_flags;
+	__u32   flags;
+	__u32   nr_ranges;
+	struct vfio_region_dma_range dma_ranges[];
+};
+
 /* -------- API for Type1 VFIO IOMMU -------- */
 
 /**
-- 
2.50.1