Sorry for my wrong title. Please ignore it.
On 2015/3/20 17:10, linhaifeng wrote:
> From: Linhaifeng <haifeng.lin at 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))) {
>
--
Regards,
Haifeng
