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| author | Yuri Benditovich <yuri.benditovich@daynix.com> | 2016-12-13 10:12:05 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2017-01-10 07:02:53 +0200 |
| commit | 312d3b35349a153e5a069e53170fd929e6b73a2b (patch) | |
| tree | b31e4bcfe0ed47ff6dab6a98c03d74bbb5cfac8a | |
| parent | f2fd57db363e465653efa55102104039b5516759 (diff) | |
| download | qemu-312d3b35349a153e5a069e53170fd929e6b73a2b.zip qemu-312d3b35349a153e5a069e53170fd929e6b73a2b.tar.gz qemu-312d3b35349a153e5a069e53170fd929e6b73a2b.tar.bz2 | |
net: Add virtio queue interface to update used index from vring state
Bring virtio queue to correct internal state for host-to-guest
operations when vhost is temporary stopped.
Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | hw/virtio/virtio.c | 5 | ||||
| -rw-r--r-- | include/hw/virtio/virtio.h | 1 |
2 files changed, 6 insertions, 0 deletions
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 8357218..baffff7 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -2020,6 +2020,11 @@ 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 5e4176f..e15c064 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -269,6 +269,7 @@ 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); |