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virtio-devices: Handle virtio queues interrupts from transport layer

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Instead of relying on the virtio-queue crate to store the information
about the MSI-X vectors for each queue, we handle this directly from the
PCI transport layer.

This is the first step in getting closer to the upstream version of
virtio-queue so that we can eventually move fully to the upstream
version.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf
2022-01-24 15:30:42 +01:00
parent d3081ff50c
commit de3e003e3e
17 changed files with 73 additions and 107 deletions
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12
virtio-devices/src/balloon.rs
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@@ -165,12 +165,8 @@ struct BalloonEpollHandler {
}
impl BalloonEpollHandler {
fn signal(
&self,
int_type: &VirtioInterruptType,
queue: Option<&Queue<GuestMemoryAtomic<GuestMemoryMmap>>>,
) -> result::Result<(), Error> {
self.interrupt_cb.trigger(int_type, queue).map_err(|e| {
fn signal(&self, int_type: VirtioInterruptType) -> result::Result<(), Error> {
self.interrupt_cb.trigger(int_type).map_err(|e| {
error!("Failed to signal used queue: {:?}", e);
Error::FailedSignal(e)
})
@@ -268,7 +264,7 @@ impl BalloonEpollHandler {
.map_err(Error::QueueAddUsed)?;
}
if used_count > 0 {
self.signal(&VirtioInterruptType::Queue, Some(&self.queues[queue_index]))?;
self.signal(VirtioInterruptType::Queue(queue_index as u16))?;
}
Ok(())
@@ -303,7 +299,7 @@ impl EpollHelperHandler for BalloonEpollHandler {
let mut config = self.config.lock().unwrap();
config.num_pages =
(self.resize_receiver.get_size() >> VIRTIO_BALLOON_PFN_SHIFT) as u32;
if let Err(e) = self.signal(&VirtioInterruptType::Config, None) {
if let Err(e) = self.signal(VirtioInterruptType::Config) {
signal_error = true;
Err(e)
} else {