X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=drivers%2Fnet%2Fvirtio%2Fvirtqueue.c;h=a7d0a9cbee14ef5c7434445e18ce14585ef6de52;hb=7497d3e2f777;hp=1ada4fe08a5426218877e08bb62657037ef1e66b;hpb=bcf55c93026ff1db8ff2838766bbaaa38741579e;p=dpdk.git

diff --git a/drivers/net/virtio/virtqueue.c b/drivers/net/virtio/virtqueue.c
index 1ada4fe08a..a7d0a9cbee 100644
--- a/drivers/net/virtio/virtqueue.c
+++ b/drivers/net/virtio/virtqueue.c
@@ -16,19 +16,41 @@
  * 2) mbuf that hasn't been consued by backend.
  */
 struct rte_mbuf *
-virtqueue_detatch_unused(struct virtqueue *vq)
+virtqueue_detach_unused(struct virtqueue *vq)
 {
 	struct rte_mbuf *cookie;
-	int idx;
+	struct virtio_hw *hw;
+	uint16_t start, end;
+	int type, idx;
 
-	if (vq != NULL)
-		for (idx = 0; idx < vq->vq_nentries; idx++) {
+	if (vq == NULL)
+		return NULL;
+
+	hw = vq->hw;
+	type = virtio_get_queue_type(hw, vq->vq_queue_index);
+	start = vq->vq_avail_idx & (vq->vq_nentries - 1);
+	end = (vq->vq_avail_idx + vq->vq_free_cnt) & (vq->vq_nentries - 1);
+
+	for (idx = 0; idx < vq->vq_nentries; idx++) {
+		if (hw->use_simple_rx && type == VTNET_RQ) {
+			if (start <= end && idx >= start && idx < end)
+				continue;
+			if (start > end && (idx >= start || idx < end))
+				continue;
+			cookie = vq->sw_ring[idx];
+			if (cookie != NULL) {
+				vq->sw_ring[idx] = NULL;
+				return cookie;
+			}
+		} else {
 			cookie = vq->vq_descx[idx].cookie;
 			if (cookie != NULL) {
 				vq->vq_descx[idx].cookie = NULL;
 				return cookie;
 			}
 		}
+	}
+
 	return NULL;
 }