[PATCH V2 mlx5-next 13/13] net/mlx5: E-Switch, Enable vport metadata matching if firmware supports it

[Saeed Mahameed]

From: Jianbo Liu <jian...@mellanox.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 <jian...@mellanox.com>
Reviewed-by: Roi Dayan <r...@mellanox.com>
Reviewed-by: Mark Bloch <ma...@mellanox.com>
Signed-off-by: Saeed Mahameed <sae...@mellanox.com>
---
 .../mellanox/mlx5/core/eswitch_offloads.c     | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c 
b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
index 94b55d0bdda9..174b0ec4162f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
@@ -1904,12 +1904,35 @@ static int esw_vport_ingress_common_config(struct 
mlx5_eswitch *esw,
        return err;
 }
 
+static bool
+esw_check_vport_match_metadata_supported(const struct mlx5_eswitch *esw)
+{
+       if (!MLX5_CAP_ESW(esw->dev, esw_uplink_ingress_acl))
+               return false;
+
+       if (!(MLX5_CAP_ESW_FLOWTABLE(esw->dev, fdb_to_vport_reg_c_id) &
+             MLX5_FDB_TO_VPORT_REG_C_0))
+               return false;
+
+       if (!MLX5_CAP_ESW_FLOWTABLE(esw->dev, flow_source))
+               return false;
+
+       if (mlx5_core_is_ecpf_esw_manager(esw->dev) ||
+           mlx5_ecpf_vport_exists(esw->dev))
+               return false;
+
+       return true;
+}
+
 static int esw_create_offloads_acl_tables(struct mlx5_eswitch *esw)
 {
        struct mlx5_vport *vport;
        int i, j;
        int err;
 
+       if (esw_check_vport_match_metadata_supported(esw))
+               esw->flags |= MLX5_ESWITCH_VPORT_MATCH_METADATA;
+
        mlx5_esw_for_all_vports(esw, i, vport) {
                err = esw_vport_ingress_common_config(esw, vport);
                if (err)
-- 
2.21.0