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Add vhost_ops to vhost_dev struct and replace all relevant ioctls

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Decouple vhost from the Linux kernel by introducing vhost_ops. The
intention is to provide different backends - a 'kernel' backend based on
the ioctl interface, and an 'user' backend based on a UNIX domain socket
and shared memory interface.

Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com>
Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Nikolay Nikolaev 2014-05-27 15:05:35 +03:00 • committed by Michael S. Tsirkin
parent 81647a655f
commit 24d1eb33eb
5 changed files with 63 additions and 27 deletions
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27
include/hw/virtio/vhost-backend.h Normal file
View file

@ -0,0 +1,27 @@
/*
* vhost-backend
*
* Copyright (c) 2013 Virtual Open Systems Sarl.
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#ifndef VHOST_BACKEND_H_
#define VHOST_BACKEND_H_
struct vhost_dev;
typedef int (*vhost_call)(struct vhost_dev *dev, unsigned long int request,
void *arg);
typedef int (*vhost_backend_init)(struct vhost_dev *dev, void *opaque);
typedef int (*vhost_backend_cleanup)(struct vhost_dev *dev);
typedef struct VhostOps {
vhost_call vhost_call;
vhost_backend_init vhost_backend_init;
vhost_backend_cleanup vhost_backend_cleanup;
} VhostOps;
#endif /* VHOST_BACKEND_H_ */

2
include/hw/virtio/vhost.h
View file

@ -2,6 +2,7 @@
#define VHOST_H
#include "hw/hw.h"
#include "hw/virtio/vhost-backend.h"
#include "hw/virtio/virtio.h"
#include "exec/memory.h"
@ -49,6 +50,7 @@ struct vhost_dev {
bool memory_changed;
hwaddr mem_changed_start_addr;
hwaddr mem_changed_end_addr;
const VhostOps *vhost_ops;
};
int vhost_dev_init(struct vhost_dev *hdev, void *opaque,