net/mlx5: Lag, set LAG traffic type mapping

Generate a traffic type bitmap that will define which
steering objects we need to create for the steering
based LAG.

Bits in this bitmap are set according to the LAG hash type.
In addition, have a field that indicate if the lag is in encap
mode or not.

Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

Author: maorgottlieb

drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h

@@ -6,6 +6,7 @@
 
 #include "mlx5_core.h"
 #include "mp.h"
+#include "port_sel.h"
 
 enum {
 	MLX5_LAG_P1,
@@ -49,6 +50,7 @@ struct mlx5_lag {
 	struct delayed_work       bond_work;
 	struct notifier_block     nb;
 	struct lag_mp             lag_mp;
+	struct mlx5_lag_port_sel  port_sel;
 };
 
 static inline struct mlx5_lag *

drivers/net/ethernet/mellanox/mlx5/core/lag/port_sel.c

@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
+/* Copyright (c) 2021, NVIDIA CORPORATION & AFFILIATES. */
+
+#include <linux/netdevice.h>
+#include "lag.h"
+
+static void set_tt_map(struct mlx5_lag_port_sel *port_sel,
+		       enum netdev_lag_hash hash)
+{
+	port_sel->tunnel = false;
+
+	switch (hash) {
+	case NETDEV_LAG_HASH_E34:
+		port_sel->tunnel = true;
+		fallthrough;
+	case NETDEV_LAG_HASH_L34:
+		set_bit(MLX5_TT_IPV4_TCP, port_sel->tt_map);
+		set_bit(MLX5_TT_IPV4_UDP, port_sel->tt_map);
+		set_bit(MLX5_TT_IPV6_TCP, port_sel->tt_map);
+		set_bit(MLX5_TT_IPV6_UDP, port_sel->tt_map);
+		set_bit(MLX5_TT_IPV4, port_sel->tt_map);
+		set_bit(MLX5_TT_IPV6, port_sel->tt_map);
+		set_bit(MLX5_TT_ANY, port_sel->tt_map);
+		break;
+	case NETDEV_LAG_HASH_E23:
+		port_sel->tunnel = true;
+		fallthrough;
+	case NETDEV_LAG_HASH_L23:
+		set_bit(MLX5_TT_IPV4, port_sel->tt_map);
+		set_bit(MLX5_TT_IPV6, port_sel->tt_map);
+		set_bit(MLX5_TT_ANY, port_sel->tt_map);
+		break;
+	default:
+		set_bit(MLX5_TT_ANY, port_sel->tt_map);
+		break;
+	}
+}

drivers/net/ethernet/mellanox/mlx5/core/lag/port_sel.h

@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
+/* Copyright (c) 2021, NVIDIA CORPORATION & AFFILIATES. */
+
+#ifndef __MLX5_LAG_FS_H__
+#define __MLX5_LAG_FS_H__
+
+#include "lib/fs_ttc.h"
+
+struct mlx5_lag_port_sel {
+	DECLARE_BITMAP(tt_map, MLX5_NUM_TT);
+	bool   tunnel;
+};
+
+#endif /* __MLX5_LAG_FS_H__ */