net/mlx5: Add NIC TX domain namespace

Add new namespace that represents the NIC TX domain.
Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Signed-off-by: Raed Salem <raeds@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

drivers/net/ethernet/mellanox/mlx5/core/en/fs.h

@@ -236,6 +236,7 @@ struct mlx5e_accel_fs_tcp;
 
 struct mlx5e_flow_steering {
 	struct mlx5_flow_namespace      *ns;
+	struct mlx5_flow_namespace      *egress_ns;
 #ifdef CONFIG_MLX5_EN_RXNFC
 	struct mlx5e_ethtool_steering   ethtool;
 #endif

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

@@ -776,6 +776,9 @@ 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:
+#ifdef CONFIG_MLX5_IPSEC
+	case MLX5_FLOW_NAMESPACE_EGRESS_KERNEL:
+#endif
 		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

@@ -126,6 +126,10 @@
 #define LAG_NUM_PRIOS 1
 #define LAG_MIN_LEVEL (OFFLOADS_MIN_LEVEL + 1)
 
+#define KERNEL_TX_IPSEC_NUM_PRIOS  1
+#define KERNEL_TX_IPSEC_NUM_LEVELS 1
+#define KERNEL_TX_MIN_LEVEL        (KERNEL_TX_IPSEC_NUM_LEVELS)
+
 struct node_caps {
 	size_t	arr_sz;
 	long	*caps;
@@ -180,13 +184,24 @@ static struct init_tree_node {
 
 static struct init_tree_node egress_root_fs = {
 	.type = FS_TYPE_NAMESPACE,
+#ifdef CONFIG_MLX5_IPSEC
+	.ar_size = 2,
+#else
 	.ar_size = 1,
+#endif
 	.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))),
+#ifdef CONFIG_MLX5_IPSEC
+		ADD_PRIO(0, KERNEL_TX_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))),
+#endif
 	}
 };
 
@@ -2165,8 +2180,10 @@ struct mlx5_flow_namespace *mlx5_get_flow_namespace(struct mlx5_core_dev *dev,
 		break;
 	}
 
-	if (type == MLX5_FLOW_NAMESPACE_EGRESS) {
+	if (type == MLX5_FLOW_NAMESPACE_EGRESS ||
+	    type == MLX5_FLOW_NAMESPACE_EGRESS_KERNEL) {
 		root_ns = steering->egress_root_ns;
+		prio = type - MLX5_FLOW_NAMESPACE_EGRESS;
 	} else if (type == MLX5_FLOW_NAMESPACE_RDMA_RX) {
 		root_ns = steering->rdma_rx_root_ns;
 		prio = RDMA_RX_BYPASS_PRIO;

include/linux/mlx5/fs.h

@@ -76,6 +76,7 @@ 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_RDMA_RX,
 	MLX5_FLOW_NAMESPACE_RDMA_RX_KERNEL,
 	MLX5_FLOW_NAMESPACE_RDMA_TX,