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