IB/mlx4: Add CQ moderation capability to query_device

query_device can now obtain the maximum values for
cq_max_count and cq_period, needed for cq moderation.
Signed-off-by: NYonatan Cohen <yonatanc@mellanox.com>
Reviewed-by: NMajd Dibbiny <majd@mellanox.com>
Signed-off-by: NLeon Romanovsky <leon@kernel.org>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

drivers/infiniband/hw/mlx4/main.c

@@ -563,6 +563,9 @@ static int mlx4_ib_query_device(struct ib_device *ibdev,
 		props->max_wq_type_rq = props->max_qp;
 	}
 
+	props->cq_caps.max_cq_moderation_count = MLX4_MAX_CQ_COUNT;
+	props->cq_caps.max_cq_moderation_period = MLX4_MAX_CQ_PERIOD;
+
 	if (!mlx4_is_slave(dev->dev))
 		err = mlx4_get_internal_clock_params(dev->dev, &clock_params);