drivers/vhost/net.c

524 				struct vhost_virtqueue *rvq,
532 	struct vhost_virtqueue *vq = poll_rx ? tvq : rvq;
542 	sock = vhost_vq_get_backend(rvq);
544 	busyloop_timeout = poll_rx ? rvq->busyloop_timeout:
557 		     !vhost_vq_avail_empty(&net->dev, rvq)) ||
569 		vhost_enable_notify(&net->dev, rvq);
580 	struct vhost_virtqueue *rvq = &rnvq->vq;
593 		vhost_net_busy_poll(net, rvq, tvq, busyloop_intr, false);
966 static int peek_head_len(struct vhost_net_virtqueue *rvq, struct sock *sk)
972 	if (rvq->rx_ring)
973 		return vhost_net_buf_peek(rvq);
992 	struct vhost_virtqueue *rvq = &rnvq->vq;
996 	if (!len && rvq->busyloop_timeout) {
1000 		vhost_net_busy_poll(net, rvq, tvq, busyloop_intr, true);