77542d4314
Since we now support the message VHOST_USER_GET_INFLIGHT_FD and VHOST_USER_SET_INFLIGHT_FD. The backend is able to restart safely because it can track inflight I/O in shared memory. This patch allows qemu to reconnect the backend after connection closed. Signed-off-by: Xie Yongji <xieyongji@baidu.com> Signed-off-by: Ni Xun <nixun@baidu.com> Signed-off-by: Zhang Yu <zhangyu31@baidu.com> Message-Id: <20190320112646.3712-7-xieyongji@baidu.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
/*
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* vhost-user-blk host device
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* Copyright(C) 2017 Intel Corporation.
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*
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* Authors:
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* Changpeng Liu <changpeng.liu@intel.com>
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*
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* Based on vhost-scsi.h, Copyright IBM, Corp. 2011
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*
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* This work is licensed under the terms of the GNU LGPL, version 2 or later.
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* See the COPYING.LIB file in the top-level directory.
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*
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*/
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#ifndef VHOST_USER_BLK_H
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#define VHOST_USER_BLK_H
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#include "standard-headers/linux/virtio_blk.h"
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#include "qemu-common.h"
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#include "hw/qdev.h"
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#include "hw/block/block.h"
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#include "chardev/char-fe.h"
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#include "hw/virtio/vhost.h"
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#include "hw/virtio/vhost-user.h"
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#define TYPE_VHOST_USER_BLK "vhost-user-blk"
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#define VHOST_USER_BLK(obj) \
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OBJECT_CHECK(VHostUserBlk, (obj), TYPE_VHOST_USER_BLK)
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typedef struct VHostUserBlk {
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VirtIODevice parent_obj;
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CharBackend chardev;
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int32_t bootindex;
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struct virtio_blk_config blkcfg;
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uint16_t num_queues;
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uint32_t queue_size;
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uint32_t config_wce;
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struct vhost_dev dev;
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struct vhost_inflight *inflight;
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VhostUserState vhost_user;
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struct vhost_virtqueue *vqs;
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guint watch;
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bool connected;
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} VHostUserBlk;
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#endif
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