diff options
| author | Shani Michaeli <shanim@mellanox.com> | 2013-02-06 16:19:09 +0000 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2013-02-21 11:38:43 -0800 |
| commit | 61083720702a329ed5952e32bda384e3bbc9093c (patch) | |
| tree | e31fb437442c23fdab04f94b69d0c612b870478d /drivers/net/ethernet | |
| parent | b20e519a81d648aebfbb90811743cc86cd469a48 (diff) | |
| download | linux-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.c | 4 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/mr.c | 29 |
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; |