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vmm: Factorize disk creation

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Since both Block and vhost_user::Blk implement the Migratable trait, we
can factorize the common part to simplify the code related to the disk
creation.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2022-05-05 10:38:17 +02:00
parent 54f39aa8cb
commit 425902b296
1 changed files with 26 additions and 36 deletions
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62
vmm/src/device_manager.rs
View File

@ -2045,14 +2045,14 @@ impl DeviceManager {
info!("Creating virtio-block device: {:?}", disk_cfg);
if disk_cfg.vhost_user {
let (virtio_device, migratable_device) = if disk_cfg.vhost_user {
let socket = disk_cfg.vhost_socket.as_ref().unwrap().clone();
let vu_cfg = VhostUserConfig {
socket,
num_queues: disk_cfg.num_queues,
queue_size: disk_cfg.queue_size,
};
let vhost_user_block_device = Arc::new(Mutex::new(
let vhost_user_block = Arc::new(Mutex::new(
match virtio_devices::vhost_user::Blk::new(
id.clone(),
vu_cfg,
@ -2070,22 +2070,10 @@ impl DeviceManager {
},
));
// Fill the device tree with a new node. In case of restore, we
// know there is nothing to do, so we can simply override the
// existing entry.
self.device_tree
.lock()
.unwrap()
.insert(id.clone(), device_node!(id, vhost_user_block_device));
Ok(MetaVirtioDevice {
virtio_device: Arc::clone(&vhost_user_block_device)
as Arc<Mutex<dyn virtio_devices::VirtioDevice>>,
iommu: false,
id,
pci_segment: disk_cfg.pci_segment,
dma_handler: None,
})
(
Arc::clone(&vhost_user_block) as Arc<Mutex<dyn virtio_devices::VirtioDevice>>,
vhost_user_block as Arc<Mutex<dyn Migratable>>,
)
} else {
let mut options = OpenOptions::new();
options.read(true);
@ -2151,7 +2139,7 @@ impl DeviceManager {
}
};
let dev = Arc::new(Mutex::new(
let virtio_block = Arc::new(Mutex::new(
virtio_devices::Block::new(
id.clone(),
image,
@ -2173,25 +2161,27 @@ impl DeviceManager {
.map_err(DeviceManagerError::CreateVirtioBlock)?,
));
let virtio_device = Arc::clone(&dev) as Arc<Mutex<dyn virtio_devices::VirtioDevice>>;
let migratable_device = dev as Arc<Mutex<dyn Migratable>>;
(
Arc::clone(&virtio_block) as Arc<Mutex<dyn virtio_devices::VirtioDevice>>,
virtio_block as Arc<Mutex<dyn Migratable>>,
)
};
// Fill the device tree with a new node. In case of restore, we
// know there is nothing to do, so we can simply override the
// existing entry.
self.device_tree
.lock()
.unwrap()
.insert(id.clone(), device_node!(id, migratable_device));
// Fill the device tree with a new node. In case of restore, we
// know there is nothing to do, so we can simply override the
// existing entry.
self.device_tree
.lock()
.unwrap()
.insert(id.clone(), device_node!(id, migratable_device));
Ok(MetaVirtioDevice {
virtio_device,
iommu: disk_cfg.iommu,
id,
pci_segment: disk_cfg.pci_segment,
dma_handler: None,
})
}
Ok(MetaVirtioDevice {
virtio_device,
iommu: disk_cfg.iommu,
id,
pci_segment: disk_cfg.pci_segment,
dma_handler: None,
})
}
fn make_virtio_block_devices(&mut self) -> DeviceManagerResult<Vec<MetaVirtioDevice>> {