net/mlx5: Add support for querying bond speed

Add mlx5_lag_query_bond_speed() to query the aggregated speed of
lag configurations with a bond device.

Signed-off-by: Or Har-Toov <ohartoov@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Edward Srouji <edwards@nvidia.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c
index 2d6024ebe346a164e3945c1aa185dc8f7817064b..9fe47c836ebd3e373aaddb55699a435e83e58dba 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c
@@ -1464,6 +1464,33 @@ static void mlx5_lag_update_tracker_speed(struct lag_tracker *tracker,
                tracker->bond_speed_mbps = lksettings.base.speed;
 }
 
+/* Returns speed in Mbps. */
+int mlx5_lag_query_bond_speed(struct mlx5_core_dev *mdev, u32 *speed)
+{
+       struct mlx5_lag *ldev;
+       unsigned long flags;
+       int ret = 0;
+
+       spin_lock_irqsave(&lag_lock, flags);
+       ldev = mlx5_lag_dev(mdev);
+       if (!ldev) {
+               ret = -ENODEV;
+               goto unlock;
+       }
+
+       *speed = ldev->tracker.bond_speed_mbps;
+
+       if (*speed == SPEED_UNKNOWN) {
+               mlx5_core_dbg(mdev, "Bond speed is unknown\n");
+               ret = -EINVAL;
+       }
+
+unlock:
+       spin_unlock_irqrestore(&lag_lock, flags);
+       return ret;
+}
+EXPORT_SYMBOL_GPL(mlx5_lag_query_bond_speed);
+
 /* this handler is always registered to netdev events */
 static int mlx5_lag_netdev_event(struct notifier_block *this,
                                 unsigned long event, void *ptr)

diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index 9e0ab3cfab7384153a61aa303a482a7ff6b1732e..e2d067b1e67b2e2e9af95f19638b633fbb844522 100644 (file)
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -1149,7 +1149,7 @@ int mlx5_cmd_destroy_vport_lag(struct mlx5_core_dev *dev);
 bool mlx5_lag_is_roce(struct mlx5_core_dev *dev);
 bool mlx5_lag_is_sriov(struct mlx5_core_dev *dev);
 bool mlx5_lag_is_active(struct mlx5_core_dev *dev);
-int mlx5_lag_query_bond_speed(struct net_device *bond_dev, u32 *speed);
+int mlx5_lag_query_bond_speed(struct mlx5_core_dev *dev, u32 *speed);
 bool mlx5_lag_mode_is_hash(struct mlx5_core_dev *dev);
 bool mlx5_lag_is_master(struct mlx5_core_dev *dev);
 bool mlx5_lag_is_shared_fdb(struct mlx5_core_dev *dev);