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virtio-devices: Report errors from EpollHelperHandler::handle_event

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Signed-off-by: Bo Chen <chen.bo@intel.com>
This commit is contained in:
Bo Chen
2022-08-11 18:30:13 -07:00
committed by Rob Bradford
parent a7f3620564
commit b1752994d5
13 changed files with 502 additions and 330 deletions
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virtio-devices/src/iommu.rs
+33 -20
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@@ -11,6 +11,7 @@ use crate::seccomp_filters::Thread;
use crate::thread_helper::spawn_virtio_thread;
use crate::GuestMemoryMmap;
use crate::{DmaRemapping, VirtioInterrupt, VirtioInterruptType};
use anyhow::anyhow;
use seccompiler::SeccompAction;
use std::collections::BTreeMap;
use std::fmt::{self, Display};
@@ -725,37 +726,49 @@ impl IommuEpollHandler {
}
impl EpollHelperHandler for IommuEpollHandler {
fn handle_event(&mut self, _helper: &mut EpollHelper, event: &epoll::Event) -> bool {
fn handle_event(
&mut self,
_helper: &mut EpollHelper,
event: &epoll::Event,
) -> result::Result<(), EpollHelperError> {
let ev_type = event.data as u16;
match ev_type {
REQUEST_Q_EVENT => {
if let Err(e) = self.queue_evts[0].read() {
error!("Failed to get queue event: {:?}", e);
return true;
} else if self.request_queue() {
if let Err(e) = self.signal_used_queue(0) {
error!("Failed to signal used queue: {:?}", e);
return true;
}
self.queue_evts[0].read().map_err(|e| {
EpollHelperError::HandleEvent(anyhow!("Failed to get queue event: {:?}", e))
})?;
if self.request_queue() {
self.signal_used_queue(0).map_err(|e| {
EpollHelperError::HandleEvent(anyhow!(
"Failed to signal used queue: {:?}",
e
))
})?;
}
}
EVENT_Q_EVENT => {
if let Err(e) = self.queue_evts[1].read() {
error!("Failed to get queue event: {:?}", e);
return true;
} else if self.event_queue() {
if let Err(e) = self.signal_used_queue(1) {
error!("Failed to signal used queue: {:?}", e);
return true;
}
self.queue_evts[1].read().map_err(|e| {
EpollHelperError::HandleEvent(anyhow!("Failed to get queue event: {:?}", e))
})?;
if self.event_queue() {
self.signal_used_queue(1).map_err(|e| {
EpollHelperError::HandleEvent(anyhow!(
"Failed to signal used queue: {:?}",
e
))
})?;
}
}
_ => {
error!("Unexpected event: {}", ev_type);
return true;
return Err(EpollHelperError::HandleEvent(anyhow!(
"Unexpected event: {}",
ev_type
)));
}
}
false
Ok(())
}
}