RE: [PATCH] net/ice: fix DCF port statistics not cleared

["Zhang, Qi Z" <qi.z.zhang@intel.com>]

> -----Original Message-----
> From: Zeng, ZhichaoX <zhichaox.zeng@intel.com>
> Sent: Tuesday, October 31, 2023 3:04 PM
> To: dev@dpdk.org
> Cc: stable@dpdk.org; Liao, TingtingX <tingtingx.liao@intel.com>; Zeng,
> ZhichaoX <zhichaox.zeng@intel.com>; Yang, Qiming
> <qiming.yang@intel.com>; Zhang, Qi Z <qi.z.zhang@intel.com>; Wang,
> Haiyue <haiyue.wang@intel.com>
> Subject: [PATCH] net/ice: fix DCF port statistics not cleared
> 
> As the kernel driver does not reset the statistics after exiting testpmd, the
> previous statistics being retained the next time testpmd is started.

Please describe the issue in general but not testpmd specific.

> 
> Call 'ice_dcf_stats_reset' during the initialization of the DCF in order to clear
> any statistics that may exist from the last use of the DCF and to avoid statistics
> errors.
> 
> Fixes: 7564d5509611 ("net/ice: add DCF hardware initialization")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Zhichao Zeng <zhichaox.zeng@intel.com>
> ---
>  drivers/net/ice/ice_dcf_ethdev.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/net/ice/ice_dcf_ethdev.c b/drivers/net/ice/ice_dcf_ethdev.c
> index 065ec728c2..29699c2c32 100644
> --- a/drivers/net/ice/ice_dcf_ethdev.c
> +++ b/drivers/net/ice/ice_dcf_ethdev.c
> @@ -1937,6 +1937,8 @@ ice_dcf_dev_init(struct rte_eth_dev *eth_dev)
>  		return -1;
>  	}
> 
> +	ice_dcf_stats_reset(eth_dev);
> +
>  	dcf_config_promisc(adapter, false, false);
>  	return 0;
>  }
> --
> 2.34.1