From: Jason Gunthorpe <jgg@xxxxxxxxxx>
set_reg_wr() always fails if !umr_modify_entity_size_disabled because
mlx5_ib_can_use_umr() always fails. Withotu set_reg_wr() IB_WR_REG_MR
doesn't work and that means the device should not advertise
IB_DEVICE_MEM_MGT_EXTENSIONS.
Fixes: 841b07f99a47 ("IB/mlx5: Block MR WR if UMR is not possible")
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxx>
---
drivers/infiniband/hw/mlx5/main.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 5cf5266936de..3ae681a6ae3b 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -840,7 +840,9 @@ static int mlx5_ib_query_device(struct ib_device *ibdev,
/* We support 'Gappy' memory registration too */
props->device_cap_flags |= IB_DEVICE_SG_GAPS_REG;
}
- props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
+ /* IB_WR_REG_MR always requires changing the entity size with UMR */
+ if (!MLX5_CAP_GEN(dev->mdev, umr_modify_entity_size_disabled))
+ props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
if (MLX5_CAP_GEN(mdev, sho)) {
props->device_cap_flags |= IB_DEVICE_INTEGRITY_HANDOVER;
/* At this stage no support for signature handover */
--
2.26.2
