Re: [net 14/15] net/mlx5e: MACsec, fix Tx SA active field update

[Jacob Keller <jacob.e.keller@intel.com>]

On 11/24/2022 12:10 AM, Saeed Mahameed wrote:
> From: Raed Salem <raeds@nvidia.com>
> 
> Currently during update Tx security association (SA) flow, the Tx SA
> active state is updated only if the Tx SA in question is the same SA
> that the MACsec interface is using for Tx,in consequence when the
> MACsec interface chose to work with this Tx SA later, where this SA
> for example should have been updated to active state and it was not,
> the relevant Tx SA HW context won't be installed, hence the MACSec
> flow won't be offloaded.
> 
> Fix by update Tx SA active state as part of update flow regardless
> whether the SA in question is the same Tx SA used by the MACsec
> interface.

Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>

> 
> Fixes: 8ff0ac5be144 ("net/mlx5: Add MACsec offload Tx command support")
> Signed-off-by: Raed Salem <raeds@nvidia.com>
> Reviewed-by: Emeel Hakim <ehakim@nvidia.com>
> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
> ---
>   drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec.c | 3 +--
>   1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec.c
> index 72f8be65fa90..137b34347de1 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec.c
> @@ -602,6 +602,7 @@ static int mlx5e_macsec_upd_txsa(struct macsec_context *ctx)
>   	if (tx_sa->active == ctx_tx_sa->active)
>   		goto out;
>   
> +	tx_sa->active = ctx_tx_sa->active;
>   	if (tx_sa->assoc_num != tx_sc->encoding_sa)
>   		goto out;
>   
> @@ -617,8 +618,6 @@ static int mlx5e_macsec_upd_txsa(struct macsec_context *ctx)
>   
>   		mlx5e_macsec_cleanup_sa(macsec, tx_sa, true);
>   	}
> -
> -	tx_sa->active = ctx_tx_sa->active;
>   out:
>   	mutex_unlock(&macsec->lock);
>