@@ -146,6 +146,8 @@ void virtio_del_queue(VirtIODevice *vdev, int n);
void virtqueue_push(VirtQueue *vq, const VirtQueueElement *elem,
unsigned int len);
void virtqueue_flush(VirtQueue *vq, unsigned int count);
+void virtqueue_discard(VirtQueue *vq, const VirtQueueElement *elem,
+ unsigned int len);
void virtqueue_fill(VirtQueue *vq, const VirtQueueElement *elem,
unsigned int len, unsigned int idx);
@@ -267,6 +267,13 @@ static void virtqueue_unmap_sg(VirtQueue *vq, const VirtQueueElement *elem,
0, elem->out_sg[i].iov_len);
}
+void virtqueue_discard(VirtQueue *vq, const VirtQueueElement *elem,
+ unsigned int len)
+{
+ vq->last_avail_idx--;
+ virtqueue_unmap_sg(vq, elem, len);
+}
+
void virtqueue_fill(VirtQueue *vq, const VirtQueueElement *elem,
unsigned int len, unsigned int idx)
{