virtio: fix Rx ring descriptor starvation

[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 b4017be..2b88efd 100644 (file)
--- a/drivers/net/virtio/virtio_rxtx.c
+++ b/drivers/net/virtio/virtio_rxtx.c
@@ -613,9 +613,6 @@ virtio_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
        if (likely(num > DESC_PER_CACHELINE))
                num = num - ((rxvq->vq_used_cons_idx + num) % DESC_PER_CACHELINE);
 
-       if (num == 0)
-               return 0;
-
        num = virtqueue_dequeue_burst_rx(rxvq, rcv_pkts, len, num);
        PMD_RX_LOG(DEBUG, "used:%d dequeue:%d", nb_used, num);
 
@@ -713,9 +710,6 @@ virtio_recv_mergeable_pkts(void *rx_queue,
 
        virtio_rmb();
 
-       if (nb_used == 0)
-               return 0;
-
        PMD_RX_LOG(DEBUG, "used:%d\n", nb_used);
 
        hw = rxvq->hw;