[PATCH] examples/l2fwd: add check of Rx packets count

[Jerin Jacob]

On Wed, May 25, 2022 at 2:44 PM Rahul Bhansali <rbhansali at marvell.com> wrote:
>
> An additional check is added to avoid extra processing if
> receive packets are 0.
>
> Performance impact: with Marvell OCTEON TX2 platform, observed an
> improvement by ~14%.
>
> Signed-off-by: Rahul Bhansali <rbhansali at marvell.com>

Acked-by: Jerin Jacob <jerinj at marvell.com>


> ---
>  examples/l2fwd/main.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/examples/l2fwd/main.c b/examples/l2fwd/main.c
> index 281c6b7a3f..28c498712e 100644
> --- a/examples/l2fwd/main.c
> +++ b/examples/l2fwd/main.c
> @@ -286,6 +286,9 @@ l2fwd_main_loop(void)
>                         nb_rx = rte_eth_rx_burst(portid, 0,
>                                                  pkts_burst, MAX_PKT_BURST);
>
> +                       if (unlikely(nb_rx == 0))
> +                               continue;
> +
>                         port_statistics[portid].rx += nb_rx;
>
>                         for (j = 0; j < nb_rx; j++) {
> --
> 2.25.1
>