return vring_avail_idx(vq) == vq->last_avail_idx;
}
-void virtqueue_fill(VirtQueue *vq, const VirtQueueElement *elem,
- unsigned int len, unsigned int idx)
+static void virtqueue_unmap_sg(VirtQueue *vq, const VirtQueueElement *elem,
+ unsigned int len)
{
unsigned int offset;
int i;
- trace_virtqueue_fill(vq, elem, len, idx);
-
offset = 0;
for (i = 0; i < elem->in_num; i++) {
size_t size = MIN(len - offset, elem->in_sg[i].iov_len);
cpu_physical_memory_unmap(elem->out_sg[i].iov_base,
elem->out_sg[i].iov_len,
0, elem->out_sg[i].iov_len);
+}
+
+void virtqueue_fill(VirtQueue *vq, const VirtQueueElement *elem,
+ unsigned int len, unsigned int idx)
+{
+ trace_virtqueue_fill(vq, elem, len, idx);
+
+ virtqueue_unmap_sg(vq, elem, len);
idx = (idx + vring_used_idx(vq)) % vq->vring.num;