diff options
| author | Raed Salem <raeds@mellanox.com> | 2018-05-31 16:43:41 +0300 |
|---|---|---|
| committer | Leon Romanovsky <leonro@mellanox.com> | 2018-06-02 07:35:37 +0300 |
| commit | 1a1e03dc15cfa94b7e878a32a979705df614d9c4 (patch) | |
| tree | b62331cbb5f9c4627efa06bff7501ecf4b3fc60e /drivers/infiniband | |
| parent | 5e95af5f7b60796ccd890a39c0ed9c5df3537952 (diff) | |
| download | linux-1a1e03dc15cfa94b7e878a32a979705df614d9c4.tar.xz | |
IB/mlx5: Add counters read support
This patch implements the uverbs counters read API, it will use the
specific read counters function to the given type to accomplish its
task.
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Raed Salem <raeds@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/main.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index 59e9d10e54b7..7a563478d0b2 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -5210,6 +5210,48 @@ static void depopulate_specs_root(struct mlx5_ib_dev *dev) uverbs_free_spec_tree(dev->ib_dev.specs_root); } +static int mlx5_ib_read_counters(struct ib_counters *counters, + struct ib_counters_read_attr *read_attr, + struct uverbs_attr_bundle *attrs) +{ + struct mlx5_ib_mcounters *mcounters = to_mcounters(counters); + struct mlx5_read_counters_attr mread_attr = {}; + struct mlx5_ib_flow_counters_desc *desc; + int ret, i; + + mutex_lock(&mcounters->mcntrs_mutex); + if (mcounters->cntrs_max_index > read_attr->ncounters) { + ret = -EINVAL; + goto err_bound; + } + + mread_attr.out = kcalloc(mcounters->counters_num, sizeof(u64), + GFP_KERNEL); + if (!mread_attr.out) { + ret = -ENOMEM; + goto err_bound; + } + + mread_attr.hw_cntrs_hndl = mcounters->hw_cntrs_hndl; + mread_attr.flags = read_attr->flags; + ret = mcounters->read_counters(counters->device, &mread_attr); + if (ret) + goto err_read; + + /* do the pass over the counters data array to assign according to the + * descriptions and indexing pairs + */ + desc = mcounters->counters_data; + for (i = 0; i < mcounters->ncounters; i++) + read_attr->counters_buff[desc[i].index] += mread_attr.out[desc[i].description]; + +err_read: + kfree(mread_attr.out); +err_bound: + mutex_unlock(&mcounters->mcntrs_mutex); + return ret; +} + static int mlx5_ib_destroy_counters(struct ib_counters *counters) { struct mlx5_ib_mcounters *mcounters = to_mcounters(counters); @@ -5483,6 +5525,7 @@ int mlx5_ib_stage_caps_init(struct mlx5_ib_dev *dev) dev->ib_dev.driver_id = RDMA_DRIVER_MLX5; dev->ib_dev.create_counters = mlx5_ib_create_counters; dev->ib_dev.destroy_counters = mlx5_ib_destroy_counters; + dev->ib_dev.read_counters = mlx5_ib_read_counters; err = init_node_data(dev); if (err) |