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

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Date:   Mon, 17 Jun 2019 19:23:32 +0000
From:   Saeed Mahameed <saeedm@...lanox.com>
To:     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: [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);
+}
+
 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