From: Yonatan Cohen <yonatanc@mellanox.com>
Date: Mon, 13 Nov 2017 10:51:18 +0200
Subject: IB/mlx5: Add CQ moderation capability to query_device
Patch-mainline: v4.15-rc1
Git-commit: 87ab3f524efd171699d21bbc98b1268acb476da5
References: bsc#1103991 FATE#326007

query_device can now obtain the maximum values for
cq_max_count and cq_period, needed for cq moderation.

Signed-off-by: Yonatan Cohen <yonatanc@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/hw/mlx5/main.c |    7 +++++++
 1 file changed, 7 insertions(+)

--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -790,6 +790,13 @@ static int mlx5_ib_query_device(struct i
 		props->tm_caps.max_sge = MLX5_TM_MAX_SGE;
 	}
 
+	if (MLX5_CAP_GEN(dev->mdev, cq_moderation)) {
+		props->cq_caps.max_cq_moderation_count =
+						MLX5_MAX_CQ_COUNT;
+		props->cq_caps.max_cq_moderation_period =
+						MLX5_MAX_CQ_PERIOD;
+	}
+
 	if (field_avail(typeof(resp), cqe_comp_caps, uhw->outlen)) {
 		resp.cqe_comp_caps.max_num =
 			MLX5_CAP_GEN(dev->mdev, cqe_compression) ?