netdev - [net-next 08/15] net/mlx5: Lag, store number of ports inside lag object

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Date:   Mon,  9 May 2022 22:57:36 -0700
From:   Saeed Mahameed <saeedm@...dia.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     netdev@...r.kernel.org, Mark Bloch <mbloch@...dia.com>,
        Maor Gottlieb <maorg@...dia.com>,
        Saeed Mahameed <saeedm@...dia.com>
Subject: [net-next 08/15] net/mlx5: Lag, store number of ports inside lag object

From: Mark Bloch <mbloch@...dia.com>

Store the number of lag ports inside the lag object. Lag object is a single
shared object managing the lag state of multiple mlx5 devices on the same
physical HCA.

Downstream patches will allow hardware lag to be created over devices with
more than 2 ports.

Signed-off-by: Mark Bloch <mbloch@...dia.com>
Reviewed-by: Maor Gottlieb <maorg@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c | 1 +
 drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c
index 360cb1c4221e..deac240e6d78 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c
@@ -164,6 +164,7 @@ static struct mlx5_lag *mlx5_lag_dev_alloc(struct mlx5_core_dev *dev)
 	if (err)
 		mlx5_core_err(dev, "Failed to init multipath lag err=%d\n",
 			      err);
+	ldev->ports = MLX5_CAP_GEN(dev, num_lag_ports);
 
 	return ldev;
 }
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h
index 03a7ea07ce96..1c8fb3fada0c 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h
@@ -45,6 +45,7 @@ struct lag_tracker {
  */
 struct mlx5_lag {
 	u8                        flags;
+	u8			  ports;
 	int			  mode_changes_in_progress;
 	bool			  shared_fdb;
 	u8                        v2p_map[MLX5_MAX_PORTS];
-- 
2.35.1