On 02/24/2017 08:48 AM, Zhiyong Yang wrote:
> vhost removes limit of RX burst size(32 pkts) and supports to make
> an best effort to receive pkts.
>
> Cc: yuanhan....@linux.intel.com
> Cc: maxime.coque...@redhat.com
>
> Signed-off-by: Zhiyong Yang <zhiyong.y...@intel.com>
> ---
> drivers/net/vhost/rte_eth_vhost.c | 23 +++++++++++++++++++++--
> 1 file changed, 21 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/vhost/rte_eth_vhost.c
> b/drivers/net/vhost/rte_eth_vhost.c
> index 1e1fa34..8a97c2a 100644
> --- a/drivers/net/vhost/rte_eth_vhost.c
> +++ b/drivers/net/vhost/rte_eth_vhost.c
> @@ -402,9 +402,28 @@ eth_vhost_rx(void *q, struct rte_mbuf **bufs, uint16_t
> nb_bufs)
> goto out;
>
> /* Dequeue packets from guest TX queue */
> - nb_rx = rte_vhost_dequeue_burst(r->vid,
> - r->virtqueue_id, r->mb_pool, bufs, nb_bufs);
> + if (likely(nb_bufs <= VHOST_MAX_PKT_BURST))
> + nb_rx = rte_vhost_dequeue_burst(r->vid, r->virtqueue_id,
> + r->mb_pool, bufs, nb_bufs);
> + else {
> + uint16_t nb_receive = nb_bufs;
> +
> + while (nb_receive) {
> + uint16_t nb_pkts;
> + uint16_t num = (uint16_t)RTE_MIN(nb_receive,
> + VHOST_MAX_PKT_BURST);
>
> + nb_pkts = rte_vhost_dequeue_burst(r->vid,
> + r->virtqueue_id,
> + r->mb_pool,
> + &bufs[nb_rx], num);
> +
> + nb_rx += nb_pkts;
> + nb_receive -= nb_pkts;
> + if (nb_pkts < num)
> + break;
> + }
Similar comment for this as for vhost tx
> + }
> r->stats.pkts += nb_rx;
>
> for (i = 0; likely(i < nb_rx); i++) {
>
