1 /*
2  * QEMU vhost-user backend
3  *
4  * Copyright (C) 2018 Red Hat Inc
5  *
6  * Authors:
7  *  Marc-André Lureau <marcandre.lureau@redhat.com>
8  *
9  * This work is licensed under the terms of the GNU GPL, version 2 or later.
10  * See the COPYING file in the top-level directory.
11  */
12 #ifndef QEMU_VHOST_USER_BACKEND_H
13 #define QEMU_VHOST_USER_BACKEND_H
14 
15 #include "qom/object.h"
16 #include "exec/memory.h"
17 #include "qemu/option.h"
18 #include "qemu/bitmap.h"
19 #include "hw/virtio/vhost.h"
20 #include "hw/virtio/vhost-user.h"
21 #include "chardev/char-fe.h"
22 #include "io/channel.h"
23 
24 #define TYPE_VHOST_USER_BACKEND "vhost-user-backend"
25 #define VHOST_USER_BACKEND(obj) \
26     OBJECT_CHECK(VhostUserBackend, (obj), TYPE_VHOST_USER_BACKEND)
27 #define VHOST_USER_BACKEND_GET_CLASS(obj) \
28     OBJECT_GET_CLASS(VhostUserBackendClass, (obj), TYPE_VHOST_USER_BACKEND)
29 #define VHOST_USER_BACKEND_CLASS(klass) \
30     OBJECT_CLASS_CHECK(VhostUserBackendClass, (klass), TYPE_VHOST_USER_BACKEND)
31 
32 typedef struct VhostUserBackend VhostUserBackend;
33 typedef struct VhostUserBackendClass VhostUserBackendClass;
34 
35 struct VhostUserBackendClass {
36     ObjectClass parent_class;
37 };
38 
39 struct VhostUserBackend {
40     /* private */
41     Object parent;
42 
43     char *chr_name;
44     CharBackend chr;
45     VhostUserState vhost_user;
46     struct vhost_dev dev;
47     VirtIODevice *vdev;
48     bool started;
49     bool completed;
50 };
51 
52 int vhost_user_backend_dev_init(VhostUserBackend *b, VirtIODevice *vdev,
53                                 unsigned nvqs, Error **errp);
54 void vhost_user_backend_start(VhostUserBackend *b);
55 void vhost_user_backend_stop(VhostUserBackend *b);
56 
57 #endif
58