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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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16
virtio-devices/src/mem.rs
View File

@@ -644,13 +644,11 @@ impl MemEpollHandler {
(resp_type, resp_state)
}
fn signal(&self, int_type: &VirtioInterruptType) -> result::Result<(), DeviceError> {
self.interrupt_cb
.trigger(int_type, Some(&self.queue))
.map_err(|e| {
error!("Failed to signal used queue: {:?}", e);
DeviceError::FailedSignalingUsedQueue(e)
})
fn signal(&self, int_type: VirtioInterruptType) -> result::Result<(), DeviceError> {
self.interrupt_cb.trigger(int_type).map_err(|e| {
error!("Failed to signal used queue: {:?}", e);
DeviceError::FailedSignalingUsedQueue(e)
})
}
fn process_queue(&mut self) -> bool {
@@ -734,7 +732,7 @@ impl EpollHelperHandler for MemEpollHandler {
let mut r = config.resize(size);
r = match r {
Err(e) => Err(e),
_ => match self.signal(&VirtioInterruptType::Config) {
_ => match self.signal(VirtioInterruptType::Config) {
Err(e) => {
signal_error = true;
Err(Error::ResizeTriggerFail(e))
@@ -756,7 +754,7 @@ impl EpollHelperHandler for MemEpollHandler {
error!("Failed to get queue event: {:?}", e);
return true;
} else if self.process_queue() {
if let Err(e) = self.signal(&VirtioInterruptType::Queue) {
if let Err(e) = self.signal(VirtioInterruptType::Queue(0)) {
error!("Failed to signal used queue: {:?}", e);
return true;
}