Support indirect descriptors in all drivers.

They were originally only added for block devices, but there's no reason to limit them to that.
rcore-os · Jun 6, 2024 · 4349025 · 4349025
1 parent 7c18b36
commit 4349025
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Showing 6 changed files with 17 additions and 16 deletions.
diff --git a/src/device/console.rs b/src/device/console.rs
@@ -12,7 +12,7 @@ use core::ptr::NonNull;
 const QUEUE_RECEIVEQ_PORT_0: u16 = 0;
 const QUEUE_TRANSMITQ_PORT_0: u16 = 1;
 const QUEUE_SIZE: usize = 2;
-const SUPPORTED_FEATURES: Features = Features::RING_EVENT_IDX;
+const SUPPORTED_FEATURES: Features = Features::RING_EVENT_IDX.union(Features::RING_INDIRECT_DESC);
 
 /// Driver for a VirtIO console device.
 ///
@@ -82,13 +82,13 @@ impl<H: Hal, T: Transport> VirtIOConsole<H, T> {
         let receiveq = VirtQueue::new(
             &mut transport,
             QUEUE_RECEIVEQ_PORT_0,
-            false,
+            negotiated_features.contains(Features::RING_INDIRECT_DESC),
             negotiated_features.contains(Features::RING_EVENT_IDX),
         )?;
         let transmitq = VirtQueue::new(
             &mut transport,
             QUEUE_TRANSMITQ_PORT_0,
-            false,
+            negotiated_features.contains(Features::RING_INDIRECT_DESC),
             negotiated_features.contains(Features::RING_EVENT_IDX),
         )?;
 

diff --git a/src/device/gpu.rs b/src/device/gpu.rs
@@ -11,7 +11,7 @@ use log::info;
 use zerocopy::{AsBytes, FromBytes, FromZeroes};
 
 const QUEUE_SIZE: u16 = 2;
-const SUPPORTED_FEATURES: Features = Features::RING_EVENT_IDX;
+const SUPPORTED_FEATURES: Features = Features::RING_EVENT_IDX.union(Features::RING_INDIRECT_DESC);
 
 /// A virtio based graphics adapter.
 ///
@@ -56,13 +56,13 @@ impl<H: Hal, T: Transport> VirtIOGpu<H, T> {
         let control_queue = VirtQueue::new(
             &mut transport,
             QUEUE_TRANSMIT,
-            false,
+            negotiated_features.contains(Features::RING_INDIRECT_DESC),
             negotiated_features.contains(Features::RING_EVENT_IDX),
         )?;
         let cursor_queue = VirtQueue::new(
             &mut transport,
             QUEUE_CURSOR,
-            false,
+            negotiated_features.contains(Features::RING_INDIRECT_DESC),
             negotiated_features.contains(Features::RING_EVENT_IDX),
         )?;
 

diff --git a/src/device/input.rs b/src/device/input.rs
@@ -35,13 +35,13 @@ impl<H: Hal, T: Transport> VirtIOInput<H, T> {
         let mut event_queue = VirtQueue::new(
             &mut transport,
             QUEUE_EVENT,
-            false,
+            negotiated_features.contains(Feature::RING_INDIRECT_DESC),
             negotiated_features.contains(Feature::RING_EVENT_IDX),
         )?;
         let status_queue = VirtQueue::new(
             &mut transport,
             QUEUE_STATUS,
-            false,
+            negotiated_features.contains(Feature::RING_INDIRECT_DESC),
             negotiated_features.contains(Feature::RING_EVENT_IDX),
         )?;
         for (i, event) in event_buf.as_mut().iter_mut().enumerate() {
@@ -209,7 +209,7 @@ pub struct InputEvent {
 
 const QUEUE_EVENT: u16 = 0;
 const QUEUE_STATUS: u16 = 1;
-const SUPPORTED_FEATURES: Feature = Feature::RING_EVENT_IDX;
+const SUPPORTED_FEATURES: Feature = Feature::RING_EVENT_IDX.union(Feature::RING_INDIRECT_DESC);
 
 // a parameter that can change
 const QUEUE_SIZE: usize = 32;
diff --git a/src/device/net/dev_raw.rs b/src/device/net/dev_raw.rs
@@ -43,13 +43,13 @@ impl<H: Hal, T: Transport, const QUEUE_SIZE: usize> VirtIONetRaw<H, T, QUEUE_SIZ
         let send_queue = VirtQueue::new(
             &mut transport,
             QUEUE_TRANSMIT,
-            false,
+            negotiated_features.contains(Features::RING_INDIRECT_DESC),
             negotiated_features.contains(Features::RING_EVENT_IDX),
         )?;
         let recv_queue = VirtQueue::new(
             &mut transport,
             QUEUE_RECEIVE,
-            false,
+            negotiated_features.contains(Features::RING_INDIRECT_DESC),
             negotiated_features.contains(Features::RING_EVENT_IDX),
         )?;
 

diff --git a/src/device/net/mod.rs b/src/device/net/mod.rs
@@ -152,4 +152,5 @@ const QUEUE_RECEIVE: u16 = 0;
 const QUEUE_TRANSMIT: u16 = 1;
 const SUPPORTED_FEATURES: Features = Features::MAC
     .union(Features::STATUS)
-    .union(Features::RING_EVENT_IDX);
+    .union(Features::RING_EVENT_IDX)
+    .union(Features::RING_INDIRECT_DESC);
diff --git a/src/device/socket/vsock.rs b/src/device/socket/vsock.rs
@@ -22,7 +22,7 @@ pub(crate) const TX_QUEUE_IDX: u16 = 1;
 const EVENT_QUEUE_IDX: u16 = 2;
 
 pub(crate) const QUEUE_SIZE: usize = 8;
-const SUPPORTED_FEATURES: Feature = Feature::RING_EVENT_IDX;
+const SUPPORTED_FEATURES: Feature = Feature::RING_EVENT_IDX.union(Feature::RING_INDIRECT_DESC);
 
 #[derive(Clone, Debug, Default, PartialEq, Eq)]
 pub struct ConnectionInfo {
@@ -275,19 +275,19 @@ impl<H: Hal, T: Transport, const RX_BUFFER_SIZE: usize> VirtIOSocket<H, T, RX_BU
         let mut rx = VirtQueue::new(
             &mut transport,
             RX_QUEUE_IDX,
-            false,
+            negotiated_features.contains(Feature::RING_INDIRECT_DESC),
             negotiated_features.contains(Feature::RING_EVENT_IDX),
         )?;
         let tx = VirtQueue::new(
             &mut transport,
             TX_QUEUE_IDX,
-            false,
+            negotiated_features.contains(Feature::RING_INDIRECT_DESC),
             negotiated_features.contains(Feature::RING_EVENT_IDX),
         )?;
         let event = VirtQueue::new(
             &mut transport,
             EVENT_QUEUE_IDX,
-            false,
+            negotiated_features.contains(Feature::RING_INDIRECT_DESC),
             negotiated_features.contains(Feature::RING_EVENT_IDX),
         )?;