[dpdk-dev] [PATCH] net/bonding: fix deadloop when update RSS RETA

[Wei Hu (Xavier)]

Hi,  Zhiguang He


On 2020/8/2 20:27, 1913909813 at qq.com wrote:
> From: Zhiguang He <191390813 at qq.com>
>
> when parament reta_size < RTE_RETA_GROUP_SIZE,
> reta_count will be 0. Then this function will
> be deadloop
>
> Fixes: 734ce47f71e0 ("bonding: support RSS dynamic configuration")
> Cc: stable at dpdk.org
>
> Signed-off-by: Zhiguang He <1913909813 at qq.com>

Acked-by: Wei Hu (Xavier) <xavier.huwei at huawei.com>

Thank you for fixing this issue.

Xavier
> ---
>   drivers/net/bonding/rte_eth_bond_pmd.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/bonding/rte_eth_bond_pmd.c b/drivers/net/bonding/rte_eth_bond_pmd.c
> index 116e2f2..cdbd815 100644
> --- a/drivers/net/bonding/rte_eth_bond_pmd.c
> +++ b/drivers/net/bonding/rte_eth_bond_pmd.c
> @@ -2935,7 +2935,8 @@ struct bwg_slave {
>   		return -EINVAL;
>   
>   	 /* Copy RETA table */
> -	reta_count = reta_size / RTE_RETA_GROUP_SIZE;
> +	reta_count = (reta_size + RTE_RETA_GROUP_SIZE - 1) /
> +			RTE_RETA_GROUP_SIZE;
>   
>   	for (i = 0; i < reta_count; i++) {
>   		internals->reta_conf[i].mask = reta_conf[i].mask;