netdev - RE: [PATCH mlx5-next 12/15] net/mlx5: E-Switch, Enable vport metadata matching if firmware supports it

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Date:   Tue, 18 Jun 2019 10:24:49 +0000
From:   Parav Pandit <parav@...lanox.com>
To:     Saeed Mahameed <saeedm@...lanox.com>,
        Saeed Mahameed <saeedm@...lanox.com>,
        Leon Romanovsky <leonro@...lanox.com>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
        Jianbo Liu <jianbol@...lanox.com>,
        Roi Dayan <roid@...lanox.com>, Mark Bloch <markb@...lanox.com>
Subject: RE: [PATCH mlx5-next 12/15] net/mlx5: E-Switch, Enable vport metadata
 matching if firmware supports it



> -----Original Message-----
> From: linux-rdma-owner@...r.kernel.org <linux-rdma-
> owner@...r.kernel.org> On Behalf Of Saeed Mahameed
> Sent: Tuesday, June 18, 2019 12:54 AM
> To: Saeed Mahameed <saeedm@...lanox.com>; Leon Romanovsky
> <leonro@...lanox.com>
> Cc: netdev@...r.kernel.org; linux-rdma@...r.kernel.org; Jianbo Liu
> <jianbol@...lanox.com>; Roi Dayan <roid@...lanox.com>; Mark Bloch
> <markb@...lanox.com>
> Subject: [PATCH mlx5-next 12/15] net/mlx5: E-Switch, Enable vport metadata
> matching if firmware supports it
> 
> From: Jianbo Liu <jianbol@...lanox.com>
> 
> As the ingress ACL rules save vhca id and vport number to packet's metadata
> REG_C_0, and the metadata matching for the rules in both fast path and slow
> path are all added, enable this feature if supported.
> 
> Signed-off-by: Jianbo Liu <jianbol@...lanox.com>
> Reviewed-by: Roi Dayan <roid@...lanox.com>
> Reviewed-by: Mark Bloch <markb@...lanox.com>
> Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
> ---
>  .../ethernet/mellanox/mlx5/core/eswitch_offloads.c  | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
> b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
> index 363517e29d4c..5124219a31de 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
> @@ -1906,12 +1906,25 @@ static int
> esw_vport_ingress_common_config(struct mlx5_eswitch *esw,
>  	return err;
>  }
> 
> +static int esw_check_vport_match_metadata_supported(struct mlx5_eswitch
> +*esw) {
> +	return (MLX5_CAP_ESW_FLOWTABLE(esw->dev,
> fdb_to_vport_reg_c_id) &
> +		MLX5_FDB_TO_VPORT_REG_C_0) &&
> +	       MLX5_CAP_ESW_FLOWTABLE(esw->dev, flow_source) &&
> +	       MLX5_CAP_ESW(esw->dev, esw_uplink_ingress_acl) &&
> +	       !mlx5_core_is_ecpf_esw_manager(esw->dev) &&
> +	       !mlx5_ecpf_vport_exists(esw->dev);
> +}
> +
struct mlx5_eswitch* should be const.
return type should be bool.