From: Linhaifeng <haifeng....@huawei.com> so we should try to refill when nb_used is 0.After otherone free mbuf we can restart to receive packets.
Signed-off-by: Linhaifeng <haifeng.lin at huawei.com> --- lib/librte_pmd_virtio/virtio_rxtx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/lib/librte_pmd_virtio/virtio_rxtx.c b/lib/librte_pmd_virtio/virtio_rxtx.c index 1d74b34..5c7e0cd 100644 --- a/lib/librte_pmd_virtio/virtio_rxtx.c +++ b/lib/librte_pmd_virtio/virtio_rxtx.c @@ -495,7 +495,7 @@ virtio_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts) num = num - ((rxvq->vq_used_cons_idx + num) % DESC_PER_CACHELINE); if (num == 0) - return 0; + goto refill; num = virtqueue_dequeue_burst_rx(rxvq, rcv_pkts, len, num); PMD_RX_LOG(DEBUG, "used:%d dequeue:%d", nb_used, num); @@ -536,6 +536,7 @@ virtio_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts) rxvq->packets += nb_rx; +refill: /* Allocate new mbuf for the used descriptor */ error = ENOSPC; while (likely(!virtqueue_full(rxvq))) { -- 1.8.5.2.msysgit.0