Re: [dpdk-dev] [PATCH] net/qede: fix L2-handles used for RSS hash update

[Kevin Traynor <ktraynor@redhat.com>]

On 06/01/2018 06:16 PM, Rasesh Mody wrote:
> Fix fast path array index which is used for passing L2 handles to RSS
> indirection table. Currently, it is using the local copy of indirection
> table. When the RX queue configuration changes the local copy becomes
> invalid.
> 
> Fixes: 69d7ba88f1a1 ("net/qede/base: use L2-handles for RSS configuration")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Rasesh Mody <rasesh.mody@cavium.com>
> ---
>  drivers/net/qede/qede_ethdev.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/qede/qede_ethdev.c b/drivers/net/qede/qede_ethdev.c
> index 3206cc6..6e9e76d 100644
> --- a/drivers/net/qede/qede_ethdev.c
> +++ b/drivers/net/qede/qede_ethdev.c
> @@ -2210,7 +2210,7 @@ int qede_rss_hash_update(struct rte_eth_dev *eth_dev,
>  	vport_update_params.vport_id = 0;
>  	/* pass the L2 handles instead of qids */
>  	for (i = 0 ; i < ECORE_RSS_IND_TABLE_SIZE ; i++) {
> -		idx = qdev->rss_ind_table[i];
> +		idx = ECORE_RSS_IND_TABLE_SIZE % QEDE_RSS_COUNT(qdev);
>  		rss_params.rss_ind_table[i] = qdev->fp_array[idx].rxq->handle;

hi, idx never changes in the loop, so the same rxq handle is in every
rss_ind_table entry - is it right?

>  	}
>  	vport_update_params.rss_params = &rss_params;
>