net/mlx5: Add MACsec Tx tables support to fs_core

Changed EGRESS_KERNEL namespace to EGRESS_IPSEC and add new
namespace for MACsec TX.
This namespace should be the last namespace for transmitted packets.

Signed-off-by: Lior Nahmanson <liorna@nvidia.com>
Reviewed-by: Raed Salem <raeds@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Author: Lior Nahmanson

drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c

@@ -577,7 +577,7 @@ int mlx5e_accel_ipsec_fs_init(struct mlx5e_ipsec *ipsec)
 	int err = -ENOMEM;
 
 	ns = mlx5_get_flow_namespace(ipsec->mdev,
-				     MLX5_FLOW_NAMESPACE_EGRESS_KERNEL);
+				     MLX5_FLOW_NAMESPACE_EGRESS_IPSEC);
 	if (!ns)
 		return -EOPNOTSUPP;
 

drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c

@@ -928,7 +928,8 @@ static int mlx5_cmd_modify_header_alloc(struct mlx5_flow_root_namespace *ns,
 		table_type = FS_FT_NIC_RX;
 		break;
 	case MLX5_FLOW_NAMESPACE_EGRESS:
-	case MLX5_FLOW_NAMESPACE_EGRESS_KERNEL:
+	case MLX5_FLOW_NAMESPACE_EGRESS_IPSEC:
+	case MLX5_FLOW_NAMESPACE_EGRESS_MACSEC:
 		max_actions = MLX5_CAP_FLOWTABLE_NIC_TX(dev, max_modify_header_actions);
 		table_type = FS_FT_NIC_TX;
 		break;

drivers/net/ethernet/mellanox/mlx5/core/fs_core.c

@@ -130,7 +130,11 @@
 
 #define KERNEL_TX_IPSEC_NUM_PRIOS  1
 #define KERNEL_TX_IPSEC_NUM_LEVELS 1
-#define KERNEL_TX_MIN_LEVEL        (KERNEL_TX_IPSEC_NUM_LEVELS)
+#define KERNEL_TX_IPSEC_MIN_LEVEL        (KERNEL_TX_IPSEC_NUM_LEVELS)
+
+#define KERNEL_TX_MACSEC_NUM_PRIOS  1
+#define KERNEL_TX_MACSEC_NUM_LEVELS 2
+#define KERNEL_TX_MACSEC_MIN_LEVEL       (KERNEL_TX_IPSEC_MIN_LEVEL + KERNEL_TX_MACSEC_NUM_PRIOS)
 
 struct node_caps {
 	size_t	arr_sz;
@@ -186,18 +190,23 @@ static struct init_tree_node {
 
 static struct init_tree_node egress_root_fs = {
 	.type = FS_TYPE_NAMESPACE,
-	.ar_size = 2,
+	.ar_size = 3,
 	.children = (struct init_tree_node[]) {
 		ADD_PRIO(0, MLX5_BY_PASS_NUM_PRIOS, 0,
 			 FS_CHAINING_CAPS_EGRESS,
 			 ADD_NS(MLX5_FLOW_TABLE_MISS_ACTION_DEF,
 				ADD_MULTIPLE_PRIO(MLX5_BY_PASS_NUM_PRIOS,
 						  BY_PASS_PRIO_NUM_LEVELS))),
-		ADD_PRIO(0, KERNEL_TX_MIN_LEVEL, 0,
+		ADD_PRIO(0, KERNEL_TX_IPSEC_MIN_LEVEL, 0,
 			 FS_CHAINING_CAPS_EGRESS,
 			 ADD_NS(MLX5_FLOW_TABLE_MISS_ACTION_DEF,
 				ADD_MULTIPLE_PRIO(KERNEL_TX_IPSEC_NUM_PRIOS,
 						  KERNEL_TX_IPSEC_NUM_LEVELS))),
+		ADD_PRIO(0, KERNEL_TX_MACSEC_MIN_LEVEL, 0,
+			 FS_CHAINING_CAPS_EGRESS,
+			 ADD_NS(MLX5_FLOW_TABLE_MISS_ACTION_DEF,
+				ADD_MULTIPLE_PRIO(KERNEL_TX_MACSEC_NUM_PRIOS,
+						  KERNEL_TX_MACSEC_NUM_LEVELS))),
 	}
 };
 
@@ -2315,7 +2324,8 @@ struct mlx5_flow_namespace *mlx5_get_flow_namespace(struct mlx5_core_dev *dev,
 		prio =  FDB_BYPASS_PATH;
 		break;
 	case MLX5_FLOW_NAMESPACE_EGRESS:
-	case MLX5_FLOW_NAMESPACE_EGRESS_KERNEL:
+	case MLX5_FLOW_NAMESPACE_EGRESS_IPSEC:
+	case MLX5_FLOW_NAMESPACE_EGRESS_MACSEC:
 		root_ns = steering->egress_root_ns;
 		prio = type - MLX5_FLOW_NAMESPACE_EGRESS;
 		break;

include/linux/mlx5/fs.h

@@ -92,7 +92,8 @@ enum mlx5_flow_namespace_type {
 	MLX5_FLOW_NAMESPACE_SNIFFER_RX,
 	MLX5_FLOW_NAMESPACE_SNIFFER_TX,
 	MLX5_FLOW_NAMESPACE_EGRESS,
-	MLX5_FLOW_NAMESPACE_EGRESS_KERNEL,
+	MLX5_FLOW_NAMESPACE_EGRESS_IPSEC,
+	MLX5_FLOW_NAMESPACE_EGRESS_MACSEC,
 	MLX5_FLOW_NAMESPACE_RDMA_RX,
 	MLX5_FLOW_NAMESPACE_RDMA_RX_KERNEL,
 	MLX5_FLOW_NAMESPACE_RDMA_TX,