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vmm: api: Introduce new "remove-device" HTTP endpoint

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This commit introduces the new command "remove-device" that will let a
user hot-unplug a VFIO PCI device from an already running VM.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf
2020-03-09 11:49:15 +01:00
committed by Rob Bradford
parent 991f3bb5da
commit 6cbdb9aa47
8 changed files with 175 additions and 17 deletions
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53
vmm/src/api/http_endpoint.rs
View File

@@ -5,9 +5,9 @@
use crate::api::http::EndpointHandler;
use crate::api::{
vm_add_device, vm_boot, vm_create, vm_delete, vm_info, vm_pause, vm_reboot, vm_resize,
vm_resume, vm_shutdown, vmm_ping, vmm_shutdown, ApiError, ApiRequest, ApiResult, VmAction,
VmAddDeviceData, VmConfig, VmResizeData,
vm_add_device, vm_boot, vm_create, vm_delete, vm_info, vm_pause, vm_reboot, vm_remove_device,
vm_resize, vm_resume, vm_shutdown, vmm_ping, vmm_shutdown, ApiError, ApiRequest, ApiResult,
VmAction, VmAddDeviceData, VmConfig, VmRemoveDeviceData, VmResizeData,
};
use micro_http::{Body, Method, Request, Response, StatusCode, Version};
use serde_json::Error as SerdeError;
@@ -51,6 +51,9 @@ pub enum HttpError {
/// Could not add a device to a VM
VmAddDevice(ApiError),
/// Could not remove a device from a VM
VmRemoveDevice(ApiError),
/// Could not shut the VMM down
VmmShutdown(ApiError),
@@ -305,3 +308,47 @@ impl EndpointHandler for VmAddDevice {
}
}
}
// /api/v1/vm.remove-device handler
pub struct VmRemoveDevice {}
impl EndpointHandler for VmRemoveDevice {
fn handle_request(
&self,
req: &Request,
api_notifier: EventFd,
api_sender: Sender<ApiRequest>,
) -> Response {
match req.method() {
Method::Put => {
match &req.body {
Some(body) => {
// Deserialize into a VmRemoveDeviceData
let vm_remove_device_data: VmRemoveDeviceData =
match serde_json::from_slice(body.raw())
.map_err(HttpError::SerdeJsonDeserialize)
{
Ok(config) => config,
Err(e) => return error_response(e, StatusCode::BadRequest),
};
// Call vm_remove_device()
match vm_remove_device(
api_notifier,
api_sender,
Arc::new(vm_remove_device_data),
)
.map_err(HttpError::VmRemoveDevice)
{
Ok(_) => Response::new(Version::Http11, StatusCode::NoContent),
Err(e) => error_response(e, StatusCode::InternalServerError),
}
}
None => Response::new(Version::Http11, StatusCode::BadRequest),
}
}
_ => Response::new(Version::Http11, StatusCode::BadRequest),
}
}
}