net/virtio: add missing backend features negotiation

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

diff --git a/drivers/net/virtio/virtio_rxtx_simple_sse.c b/drivers/net/virtio/virtio_rxtx_simple_sse.c
index cb1610e..1056e9c 100644 (file)
--- a/drivers/net/virtio/virtio_rxtx_simple_sse.c
+++ b/drivers/net/virtio/virtio_rxtx_simple_sse.c
@@ -43,7 +43,7 @@ virtio_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
        struct virtnet_rx *rxvq = rx_queue;
        struct virtqueue *vq = rxvq->vq;
        struct virtio_hw *hw = vq->hw;
-       uint16_t nb_used;
+       uint16_t nb_used, nb_total;
        uint16_t desc_idx;
        struct vring_used_elem *rused;
        struct rte_mbuf **sw_ring;
@@ -85,9 +85,7 @@ virtio_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
        if (unlikely(nb_pkts < RTE_VIRTIO_DESC_PER_LOOP))
                return 0;
 
-       nb_used = VIRTQUEUE_NUSED(vq);
-
-       rte_compiler_barrier();
+       nb_used = virtqueue_nused(vq);
 
        if (unlikely(nb_used == 0))
                return 0;
@@ -108,9 +106,10 @@ virtio_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
                        virtqueue_notify(vq);
        }
 
+       nb_total = nb_used;
        ref_rx_pkts = rx_pkts;
        for (nb_pkts_received = 0;
-               nb_pkts_received < nb_used;) {
+               nb_pkts_received < nb_total;) {
                __m128i desc[RTE_VIRTIO_DESC_PER_LOOP / 2];
                __m128i mbp[RTE_VIRTIO_DESC_PER_LOOP / 2];
                __m128i pkt_mb[RTE_VIRTIO_DESC_PER_LOOP];