[dpdk-stable] [PATCH 17.11 5/5] net/qede: fix L2-handles used for RSS hash update

[Yuanhan Liu]

On Thu, Jun 07, 2018 at 05:51:14PM -0700, Rasesh Mody wrote:
> [ upstream commit 3a1a1f3f1344c8a3bc0b06cd23e97b3922a91a61 ]

Note that this commit is not from upstream, instead, it's from
dpdk-next-net.

Another thing worth noting is the commit hash will likely change
after it get applied to upstream, for, AFIAK, they do rebase for
merging dpdk-next tress. That's the reason we don't directly pick
commits from dpdk-next trees.

For this one, I will apply it without above commit info. I have
also applied the others.

Thanks.

	--yliu


> 
> Fix fast path array index which is used for passing L2 handles to RSS
> indirection table, properly distribute rxq handles for 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")
> 
> Signed-off-by: Rasesh Mody <rasesh.mody at cavium.com>
> Reviewed-by: Kevin Traynor <ktraynor at redhat.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 d266fff..7462f1a 100644
> --- a/drivers/net/qede/qede_ethdev.c
> +++ b/drivers/net/qede/qede_ethdev.c
> @@ -2084,7 +2084,7 @@ 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 = i % QEDE_RSS_COUNT(qdev);
>  		rss_params.rss_ind_table[i] = qdev->fp_array[idx].rxq->handle;
>  	}
>  	vport_update_params.rss_params = &rss_params;
> -- 
> 1.7.10.3