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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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9
vmm/src/api/http_endpoint.rs
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@@ -76,7 +76,7 @@ impl EndpointHandler for VmActionHandler {
api_notifier: EventFd,
api_sender: Sender<ApiRequest>,
body: &Option<Body>,
file: Option<File>,
mut files: Vec<File>,
) -> std::result::Result<Option<Body>, HttpError> {
use VmAction::*;
if let Some(body) = body {
@@ -111,10 +111,11 @@ impl EndpointHandler for VmActionHandler {
AddNet(_) => {
let mut net_cfg: NetConfig = serde_json::from_slice(body.raw())?;
// Update network config with optional file that might have
// Update network config with optional files that might have
// been sent through control message.
if let Some(file) = file {
net_cfg.fds = Some(vec![file.into_raw_fd()]);
if !files.is_empty() {
let fds = files.drain(..).map(|f| f.into_raw_fd()).collect();
net_cfg.fds = Some(fds);
}
vm_add_net(api_notifier, api_sender, Arc::new(net_cfg))
.map_err(HttpError::VmAddNet)