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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738/* SPDX-License-Identifier: GPL-2.0 *//* * dma-bufs for virtio exported objects * * Copyright (C) 2020 Google, Inc. */
#ifndef _LINUX_VIRTIO_DMA_BUF_H#define _LINUX_VIRTIO_DMA_BUF_H
#include <linux/dma-buf.h>#include <linux/uuid.h>#include <linux/virtio.h>
/** * struct virtio_dma_buf_ops - operations possible on exported object dma-buf * @ops: the base dma_buf_ops. ops.attach MUST be virtio_dma_buf_attach. * @device_attach: [optional] callback invoked by virtio_dma_buf_attach during * all attach operations. * @get_uid: [required] callback to get the uuid of the exported object. */struct virtio_dma_buf_ops { struct dma_buf_ops ops; int (*device_attach)(struct dma_buf *dma_buf, struct dma_buf_attachment *attach); int (*get_uuid)(struct dma_buf *dma_buf, uuid_t *uuid);};
int virtio_dma_buf_attach(struct dma_buf *dma_buf, struct dma_buf_attachment *attach);
struct dma_buf *virtio_dma_buf_export (const struct dma_buf_export_info *exp_info);bool is_virtio_dma_buf(struct dma_buf *dma_buf);int virtio_dma_buf_get_uuid(struct dma_buf *dma_buf, uuid_t *uuid);
#endif /* _LINUX_VIRTIO_DMA_BUF_H */