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authorRaed Salem <raeds@mellanox.com>2018-05-31 16:43:41 +0300
committerLeon Romanovsky <leonro@mellanox.com>2018-06-02 07:35:37 +0300
commit1a1e03dc15cfa94b7e878a32a979705df614d9c4 (patch)
treeb62331cbb5f9c4627efa06bff7501ecf4b3fc60e /drivers/infiniband
parent5e95af5f7b60796ccd890a39c0ed9c5df3537952 (diff)
downloadlinux-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.c43
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)