[PATCH v3 1/1] net/bonding: fix rss key configuration when the key length is 52

[Min Hu (Connor)]

Acked-by: Min Hu (Connor) <humin29 at huawei.com>

在 2022/4/11 13:40, Ke Zhang 写道:
> when creating a bonding device, if the slave device's rss key length
> = standard_rss_key length + extended_hash_key length, then bonding
> device will be same as slave, in function bond_ethdev_configure(),
> the default_rss_key length is 40, it is not matched, so it should
> calculate a new key for bonding device if the default key could not
> be used.
> 
> Signed-off-by: Ke Zhang <ke1x.zhang at intel.com>
> ---
>   drivers/net/bonding/rte_eth_bond_pmd.c | 17 +++++++++++------
>   1 file changed, 11 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/net/bonding/rte_eth_bond_pmd.c b/drivers/net/bonding/rte_eth_bond_pmd.c
> index b305b6a35b..5cbe89031b 100644
> --- a/drivers/net/bonding/rte_eth_bond_pmd.c
> +++ b/drivers/net/bonding/rte_eth_bond_pmd.c
> @@ -3617,13 +3617,18 @@ bond_ethdev_configure(struct rte_eth_dev *dev)
>   			       internals->rss_key_len);
>   		} else {
>   			if (internals->rss_key_len > sizeof(default_rss_key)) {
> -				RTE_BOND_LOG(ERR,
> -				       "There is no suitable default hash key");
> -				return -EINVAL;
> +				/*
> +				 * If the rss_key includes standard_rss_key and
> +				 * extended_hash_key, the rss key length will be
> +				 * larger than default rss key length, so it should
> +				 * re-calculate the hash key.
> +				 */
> +				for (i = 0; i < internals->rss_key_len; i++)
> +					internals->rss_key[i] = (uint8_t)rte_rand();
> +			} else {
> +				memcpy(internals->rss_key, default_rss_key,
> +					internals->rss_key_len);
>   			}
> -
> -			memcpy(internals->rss_key, default_rss_key,
> -			       internals->rss_key_len);
>   		}
>   
>   		for (i = 0; i < RTE_DIM(internals->reta_conf); i++) {
>