include/sysemu/vhost-user-backend.h

   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