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/*
* vhost-user-blk host device
* Copyright(C) 2017 Intel Corporation.
*
* Authors:
* Changpeng Liu <changpeng.liu@intel.com>
*
* Based on vhost-scsi.h, Copyright IBM, Corp. 2011
*
* This work is licensed under the terms of the GNU LGPL, version 2 or later.
* See the COPYING.LIB file in the top-level directory.
*
*/
#ifndef VHOST_USER_BLK_H
#define VHOST_USER_BLK_H
#include "standard-headers/linux/virtio_blk.h"
#include "hw/block/block.h"
#include "chardev/char-fe.h"
#include "hw/virtio/vhost.h"
#include "hw/virtio/vhost-user.h"
#include "qom/object.h"
#define TYPE_VHOST_USER_BLK "vhost-user-blk"
OBJECT_DECLARE_SIMPLE_TYPE(VHostUserBlk, VHOST_USER_BLK)
#define VHOST_USER_BLK_AUTO_NUM_QUEUES UINT16_MAX
struct VHostUserBlk {
VirtIODevice parent_obj;
CharBackend chardev;
int32_t bootindex;
struct virtio_blk_config blkcfg;
uint16_t num_queues;
uint32_t queue_size;
uint32_t config_wce;
struct vhost_dev dev;
struct vhost_inflight *inflight;
VhostUserState vhost_user;
struct vhost_virtqueue *vhost_vqs;
VirtQueue **virtqs;
/*
* There are at least two steps of initialization of the
* vhost-user device. The first is a "connect" step and
* second is a "start" step. Make a separation between
* those initialization phases by using two fields.
*/
/* vhost_user_blk_connect/vhost_user_blk_disconnect */
bool connected;
/* vhost_user_blk_start/vhost_user_blk_stop */
bool started_vu;
};
#endif
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