net/virtio: fix split queue vectorized Rx

[dpdk.git] / drivers / net / virtio / virtio_rxtx.c

diff --git a/drivers/net/virtio/virtio_rxtx.c b/drivers/net/virtio/virtio_rxtx.c
index 18f03c9..97ed695 100644 (file)
--- a/drivers/net/virtio/virtio_rxtx.c
+++ b/drivers/net/virtio/virtio_rxtx.c
@@ -706,8 +706,14 @@ virtio_dev_rx_queue_setup(struct rte_eth_dev *dev,
        }
        vq->vq_free_thresh = rx_free_thresh;
 
-       if (nb_desc > vq->vq_nentries)
+       /*
+        * For split ring vectorized path descriptors number must be
+        * equal to the ring size.
+        */
+       if (nb_desc > vq->vq_nentries ||
+           (!virtio_with_packed_queue(hw) && hw->use_vec_rx)) {
                nb_desc = vq->vq_nentries;
+       }
        vq->vq_free_cnt = RTE_MIN(vq->vq_free_cnt, nb_desc);
 
        rxvq = &vq->rxq;