qemu-devel
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Qemu-devel] [PATCH v3 1/4] net: Add virtio queue interface to update us


From: Yuri Benditovich
Subject: [Qemu-devel] [PATCH v3 1/4] net: Add virtio queue interface to update used index from vring state
Date: Tue, 13 Dec 2016 10:12:05 +0200

Bring virtio queue to correct internal  state for host-to-guest
operations when vhost is temporary stopped.

Signed-off-by: Yuri Benditovich <address@hidden>
---
 hw/virtio/virtio.c         | 5 +++++
 include/hw/virtio/virtio.h | 1 +
 2 files changed, 6 insertions(+)

diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index 1af2de2..45536e4 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -1995,6 +1995,11 @@ void virtio_queue_set_last_avail_idx(VirtIODevice *vdev, 
int n, uint16_t idx)
     vdev->vq[n].shadow_avail_idx = idx;
 }
 
+void virtio_queue_update_used_idx(VirtIODevice *vdev, int n)
+{
+    vdev->vq[n].used_idx = vring_used_idx(&vdev->vq[n]);
+}
+
 void virtio_queue_invalidate_signalled_used(VirtIODevice *vdev, int n)
 {
     vdev->vq[n].signalled_used_valid = false;
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index ab0e030..a1a75ed 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -266,6 +266,7 @@ hwaddr virtio_queue_get_used_size(VirtIODevice *vdev, int 
n);
 uint16_t virtio_queue_get_last_avail_idx(VirtIODevice *vdev, int n);
 void virtio_queue_set_last_avail_idx(VirtIODevice *vdev, int n, uint16_t idx);
 void virtio_queue_invalidate_signalled_used(VirtIODevice *vdev, int n);
+void virtio_queue_update_used_idx(VirtIODevice *vdev, int n);
 VirtQueue *virtio_get_queue(VirtIODevice *vdev, int n);
 uint16_t virtio_get_queue_index(VirtQueue *vq);
 EventNotifier *virtio_queue_get_guest_notifier(VirtQueue *vq);
-- 
1.9.1




reply via email to

[Prev in Thread] Current Thread [Next in Thread]