[dpdk-dev] [PATCH] net/iavf: fix Rx bytes stats

[Stephen Hemminger]

On Wed, 17 Jul 2019 12:31:00 +0800
Qi Zhang <qi.z.zhang at intel.com> wrote:

> Exclude 4 bytes CRC for rx bytes stats.
> This also aligned Rx stats calculation with PF.
> 
> Fixes: f4a41a6953af ("net/avf: support stats")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Qi Zhang <qi.z.zhang at intel.com>
> ---
>  drivers/net/iavf/iavf_ethdev.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/net/iavf/iavf_ethdev.c b/drivers/net/iavf/iavf_ethdev.c
> index 53dc05c78..fe75e86ab 100644
> --- a/drivers/net/iavf/iavf_ethdev.c
> +++ b/drivers/net/iavf/iavf_ethdev.c
> @@ -1047,6 +1047,7 @@ iavf_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
>  		stats->imissed = pstats->rx_discards;
>  		stats->oerrors = pstats->tx_errors + pstats->tx_discards;
>  		stats->ibytes = pstats->rx_bytes;
> +		stats->ibytes -= stats->ipackets * RTE_ETHER_CRC_LEN;
>  		stats->obytes = pstats->tx_bytes;
>  	} else {
>  		PMD_DRV_LOG(ERR, "Get statistics failed");

Correct, DPDK statistics should not include CRC.

Acked-by: Stephen Hemminger <stephen at networkplumber.org>