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vmm: api: Support multiple fds with add-net

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Based on the latest code from the micro-http crate, this patch adds the
support for multiple file descriptors to be sent along with the add-net
request. This means we can now hotplug multiqueue network interface to
the VM.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf
2022-01-21 08:54:22 +01:00
committed by Rob Bradford
parent 400c28fa58
commit 4e46a1bc3c
3 changed files with 13 additions and 8 deletions
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10
vmm/src/api/http.rs
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@@ -146,9 +146,13 @@ pub trait EndpointHandler: Sync + Send {
api_notifier: EventFd,
api_sender: Sender<ApiRequest>,
) -> Response {
let file = req.file.as_ref().map(|f| f.try_clone().unwrap());
// Cloning the files here is very important as it dup() the file
// descriptors, leaving open the one that was received. This way,
// rebooting the VM will work since the VM will be created from the
// original file descriptors.
let files = req.files.iter().map(|f| f.try_clone().unwrap()).collect();
let res = match req.method() {
Method::Put => self.put_handler(api_notifier, api_sender, &req.body, file),
Method::Put => self.put_handler(api_notifier, api_sender, &req.body, files),
Method::Get => self.get_handler(api_notifier, api_sender, &req.body),
_ => return Response::new(Version::Http11, StatusCode::BadRequest),
};
@@ -176,7 +180,7 @@ pub trait EndpointHandler: Sync + Send {
_api_notifier: EventFd,
_api_sender: Sender<ApiRequest>,
_body: &Option<Body>,
_file: Option<File>,
_files: Vec<File>,
) -> std::result::Result<Option<Body>, HttpError> {
Err(HttpError::BadRequest)
}