[dpdk-dev] [PATCH v2] net/ice: fix wrong RSS hash update

[Yang, Qiming]

Acked-by: Qiming Yang <qiming.yang at intel.com>

> -----Original Message-----
> From: Wu, Wenjun1 <wenjun1.wu at intel.com>
> Sent: 2021年3月3日 15:57
> To: dev at dpdk.org; Yang, Qiming <qiming.yang at intel.com>; Zhang, Qi Z
> <qi.z.zhang at intel.com>
> Cc: Wu, Wenjun1 <wenjun1.wu at intel.com>; stable at dpdk.org
> Subject: [PATCH v2] net/ice: fix wrong RSS hash update
> 
> This patch change redundant judgment statements to disable RSS when users
> need to disable RSS or RSS hash function configured is not supported.
> 
> Fixes: 4717a12cfaf1 ("net/ice: initialize and update RSS based on user config")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Wenjun Wu <wenjun1.wu at intel.com>
> 
> ---
> v2: do pf->rss_hf = 0 when rss_conf->rss_hf == 0 instead of direct removal to
> avoid unnecessary judgment.
> ---
>  drivers/net/ice/ice_ethdev.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ice/ice_ethdev.c b/drivers/net/ice/ice_ethdev.c index
> f43b2e0b2..299162286 100644
> --- a/drivers/net/ice/ice_ethdev.c
> +++ b/drivers/net/ice/ice_ethdev.c
> @@ -4461,8 +4461,10 @@ ice_rss_hash_update(struct rte_eth_dev *dev,
>  	if (status)
>  		return status;
> 
> -	if (rss_conf->rss_hf == 0)
> +	if (rss_conf->rss_hf == 0) {
> +		pf->rss_hf = 0;
>  		return 0;
> +	}
> 
>  	/* RSS hash configuration */
>  	ice_rss_hash_set(pf, rss_conf->rss_hf);
> --
> 2.25.1