summaryrefslogtreecommitdiff
path: root/drivers/net/ethernet
diff options
context:
space:
mode:
authorShani Michaeli <shanim@mellanox.com>2013-02-06 16:19:09 +0000
committerRoland Dreier <roland@purestorage.com>2013-02-21 11:38:43 -0800
commit61083720702a329ed5952e32bda384e3bbc9093c (patch)
treee31fb437442c23fdab04f94b69d0c612b870478d /drivers/net/ethernet
parentb20e519a81d648aebfbb90811743cc86cd469a48 (diff)
downloadlinux-3.10-61083720702a329ed5952e32bda384e3bbc9093c.tar.gz
linux-3.10-61083720702a329ed5952e32bda384e3bbc9093c.tar.bz2
linux-3.10-61083720702a329ed5952e32bda384e3bbc9093c.zip
mlx4_core: Propagate MR deregistration failures to caller
MR deregistration fails when memory windows are bound to the MR. Handle such failures by propagating them to the caller ULP. Signed-off-by: Haggai Eran <haggaie@mellanox.com> Signed-off-by: Shani Michaeli <shanim@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/net/ethernet')
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/en_main.c4
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/mr.c29
2 files changed, 24 insertions, 9 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_main.c b/drivers/net/ethernet/mellanox/mlx4/en_main.c
index 3a2b8c65642..a2987142734 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_main.c
@@ -176,7 +176,7 @@ static void mlx4_en_remove(struct mlx4_dev *dev, void *endev_ptr)
flush_workqueue(mdev->workqueue);
destroy_workqueue(mdev->workqueue);
- mlx4_mr_free(dev, &mdev->mr);
+ (void) mlx4_mr_free(dev, &mdev->mr);
iounmap(mdev->uar_map);
mlx4_uar_free(dev, &mdev->priv_uar);
mlx4_pd_free(dev, mdev->priv_pdn);
@@ -283,7 +283,7 @@ static void *mlx4_en_add(struct mlx4_dev *dev)
return mdev;
err_mr:
- mlx4_mr_free(dev, &mdev->mr);
+ (void) mlx4_mr_free(dev, &mdev->mr);
err_map:
if (!mdev->uar_map)
iounmap(mdev->uar_map);
diff --git a/drivers/net/ethernet/mellanox/mlx4/mr.c b/drivers/net/ethernet/mellanox/mlx4/mr.c
index 49705cf860c..06b16e4ace8 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mr.c
+++ b/drivers/net/ethernet/mellanox/mlx4/mr.c
@@ -442,7 +442,7 @@ int mlx4_mr_alloc(struct mlx4_dev *dev, u32 pd, u64 iova, u64 size, u32 access,
}
EXPORT_SYMBOL_GPL(mlx4_mr_alloc);
-static void mlx4_mr_free_reserved(struct mlx4_dev *dev, struct mlx4_mr *mr)
+static int mlx4_mr_free_reserved(struct mlx4_dev *dev, struct mlx4_mr *mr)
{
int err;
@@ -450,20 +450,31 @@ static void mlx4_mr_free_reserved(struct mlx4_dev *dev, struct mlx4_mr *mr)
err = mlx4_HW2SW_MPT(dev, NULL,
key_to_hw_index(mr->key) &
(dev->caps.num_mpts - 1));
- if (err)
- mlx4_warn(dev, "xxx HW2SW_MPT failed (%d)\n", err);
+ if (err) {
+ mlx4_warn(dev, "HW2SW_MPT failed (%d),", err);
+ mlx4_warn(dev, "MR has MWs bound to it.\n");
+ return err;
+ }
mr->enabled = MLX4_MPT_EN_SW;
}
mlx4_mtt_cleanup(dev, &mr->mtt);
+
+ return 0;
}
-void mlx4_mr_free(struct mlx4_dev *dev, struct mlx4_mr *mr)
+int mlx4_mr_free(struct mlx4_dev *dev, struct mlx4_mr *mr)
{
- mlx4_mr_free_reserved(dev, mr);
+ int ret;
+
+ ret = mlx4_mr_free_reserved(dev, mr);
+ if (ret)
+ return ret;
if (mr->enabled)
mlx4_mpt_free_icm(dev, key_to_hw_index(mr->key));
mlx4_mpt_release(dev, key_to_hw_index(mr->key));
+
+ return 0;
}
EXPORT_SYMBOL_GPL(mlx4_mr_free);
@@ -831,7 +842,7 @@ int mlx4_fmr_alloc(struct mlx4_dev *dev, u32 pd, u32 access, int max_pages,
return 0;
err_free:
- mlx4_mr_free(dev, &fmr->mr);
+ (void) mlx4_mr_free(dev, &fmr->mr);
return err;
}
EXPORT_SYMBOL_GPL(mlx4_fmr_alloc);
@@ -888,10 +899,14 @@ EXPORT_SYMBOL_GPL(mlx4_fmr_unmap);
int mlx4_fmr_free(struct mlx4_dev *dev, struct mlx4_fmr *fmr)
{
+ int ret;
+
if (fmr->maps)
return -EBUSY;
- mlx4_mr_free(dev, &fmr->mr);
+ ret = mlx4_mr_free(dev, &fmr->mr);
+ if (ret)
+ return ret;
fmr->mr.enabled = MLX4_MPT_DISABLED;
return 0;