IB/mlx5: Refactor CQE compression response

Refactor CQE compression response to be fully set only
when it`s really supported. There is no change from user
perspective because anyway resp.cqe_comp_caps.max_num was
set to zero.

Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Yonatan Cohen <yonatanc@mellanox.com>W
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index daa919e5a4423adf5b658dc8668526f93e54d861..029c310a0dd1d711bb6168f0109b3bf73ac86656 100644 (file)
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -983,13 +983,17 @@ static int mlx5_ib_query_device(struct ib_device *ibdev,
        }
 
        if (field_avail(typeof(resp), cqe_comp_caps, uhw->outlen)) {
-               resp.cqe_comp_caps.max_num =
-                       MLX5_CAP_GEN(dev->mdev, cqe_compression) ?
-                       MLX5_CAP_GEN(dev->mdev, cqe_compression_max_num) : 0;
-               resp.cqe_comp_caps.supported_format =
-                       MLX5_IB_CQE_RES_FORMAT_HASH |
-                       MLX5_IB_CQE_RES_FORMAT_CSUM;
                resp.response_length += sizeof(resp.cqe_comp_caps);
+
+               if (MLX5_CAP_GEN(dev->mdev, cqe_compression)) {
+                       resp.cqe_comp_caps.max_num =
+                               MLX5_CAP_GEN(dev->mdev,
+                                            cqe_compression_max_num);
+
+                       resp.cqe_comp_caps.supported_format =
+                               MLX5_IB_CQE_RES_FORMAT_HASH |
+                               MLX5_IB_CQE_RES_FORMAT_CSUM;
+               }
        }
 
        if (field_avail(typeof(resp), packet_pacing_caps, uhw->outlen) &&