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vm-virtio: net: Add further missing error reporting

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Ensure that errors generated from rx_single_frame are propagated
correctly.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford 2020-05-29 14:31:35 +01:00 committed by Sebastien Boeuf
parent 36d072e69c
commit 237cb184b4
1 changed files with 6 additions and 6 deletions
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12
vm-virtio/src/net.rs
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@ -71,7 +71,7 @@ impl NetEpollHandler {
// Copies a single frame from `self.rx.frame_buf` into the guest. Returns true
// if a buffer was used, and false if the frame must be deferred until a buffer
// is made available by the driver.
fn rx_single_frame(&mut self, mut queue: &mut Queue) -> bool {
fn rx_single_frame(&mut self, mut queue: &mut Queue) -> result::Result<bool, DeviceError> {
let mem = self.mem.memory();
let next_desc = queue.iter(&mem).next();
@ -87,10 +87,10 @@ impl NetEpollHandler {
.map_err(DeviceError::UnregisterListener)?;
self.rx_tap_listening = false;
}
return false;
return Ok(false);
}
self.rx.process_desc_chain(&mem, next_desc, &mut queue)
Ok(self.rx.process_desc_chain(&mem, next_desc, &mut queue))
}
fn process_rx(&mut self, queue: &mut Queue) -> result::Result<bool, DeviceError> {
@ -99,7 +99,7 @@ impl NetEpollHandler {
match self.read_tap() {
Ok(count) => {
self.rx.bytes_read = count;
if !self.rx_single_frame(queue) {
if !self.rx_single_frame(queue)? {
self.rx.deferred_frame = true;
break;
}
@ -138,7 +138,7 @@ impl NetEpollHandler {
self.rx_tap_listening = true;
}
if self.rx.deferred_frame {
if self.rx_single_frame(queue) {
if self.rx_single_frame(queue)? {
self.rx.deferred_frame = false;
// process_rx() was interrupted possibly before consuming all
// packets in the tap; try continuing now.
@ -165,7 +165,7 @@ impl NetEpollHandler {
// Process a deferred frame first if available. Don't read from tap again
// until we manage to receive this deferred frame.
{
if self.rx_single_frame(&mut queue) {
if self.rx_single_frame(&mut queue)? {
self.rx.deferred_frame = false;
self.process_rx(&mut queue)
} else if self.rx.deferred_irqs {