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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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virtio-devices/src/iommu.rs
+4 -7
View File
@@ -609,12 +609,9 @@ impl IommuEpollHandler {
false
}
fn signal_used_queue(
&self,
queue: &Queue<GuestMemoryAtomic<GuestMemoryMmap>>,
) -> result::Result<(), DeviceError> {
fn signal_used_queue(&self, queue_index: u16) -> result::Result<(), DeviceError> {
self.interrupt_cb
.trigger(&VirtioInterruptType::Queue, Some(queue))
.trigger(VirtioInterruptType::Queue(queue_index))
.map_err(|e| {
error!("Failed to signal used queue: {:?}", e);
DeviceError::FailedSignalingUsedQueue(e)
@@ -644,7 +641,7 @@ impl EpollHelperHandler for IommuEpollHandler {
error!("Failed to get queue event: {:?}", e);
return true;
} else if self.request_queue() {
if let Err(e) = self.signal_used_queue(&self.queues[0]) {
if let Err(e) = self.signal_used_queue(0) {
error!("Failed to signal used queue: {:?}", e);
return true;
}
@@ -655,7 +652,7 @@ impl EpollHelperHandler for IommuEpollHandler {
error!("Failed to get queue event: {:?}", e);
return true;
} else if self.event_queue() {
if let Err(e) = self.signal_used_queue(&self.queues[1]) {
if let Err(e) = self.signal_used_queue(1) {
error!("Failed to signal used queue: {:?}", e);
return true;
}