net/mlx5: Use own workqueue for lag netdev events processing

Instead of using the system workqueue, allocate our own workqueue.
This workqueue will be used to handle more work in the next patch.

This patch doesn't change functionality.

Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

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

@@ -346,7 +346,7 @@ static void mlx5_do_bond(struct mlx5_lag *ldev)
 
 static void mlx5_queue_bond_work(struct mlx5_lag *ldev, unsigned long delay)
 {
-	schedule_delayed_work(&ldev->bond_work, delay);
+	queue_delayed_work(ldev->wq, &ldev->bond_work, delay);
 }
 
 static void mlx5_do_bond_work(struct work_struct *work)
@@ -498,13 +498,20 @@ static struct mlx5_lag *mlx5_lag_dev_alloc(void)
 	if (!ldev)
 		return NULL;
 
+	ldev->wq = create_singlethread_workqueue("mlx5_lag");
+	if (!ldev->wq) {
+		kfree(ldev);
+		return NULL;
+	}
+
 	INIT_DELAYED_WORK(&ldev->bond_work, mlx5_do_bond_work);
 
 	return ldev;
 }
 
 static void mlx5_lag_dev_free(struct mlx5_lag *ldev)
 {
+	destroy_workqueue(ldev->wq);
 	kfree(ldev);
 }
 

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

@@ -33,6 +33,7 @@ struct mlx5_lag {
 	u8                        v2p_map[MLX5_MAX_PORTS];
 	struct lag_func           pf[MLX5_MAX_PORTS];
 	struct lag_tracker        tracker;
+	struct workqueue_struct   *wq;
 	struct delayed_work       bond_work;
 	struct notifier_block     nb;
 };