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>
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@ -5210,6 +5210,48 @@ static void depopulate_specs_root(struct mlx5_ib_dev *dev)
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uverbs_free_spec_tree(dev->ib_dev.specs_root);
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uverbs_free_spec_tree(dev->ib_dev.specs_root);
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}
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}
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static int mlx5_ib_read_counters(struct ib_counters *counters,
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struct ib_counters_read_attr *read_attr,
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struct uverbs_attr_bundle *attrs)
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{
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struct mlx5_ib_mcounters *mcounters = to_mcounters(counters);
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struct mlx5_read_counters_attr mread_attr = {};
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struct mlx5_ib_flow_counters_desc *desc;
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int ret, i;
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mutex_lock(&mcounters->mcntrs_mutex);
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if (mcounters->cntrs_max_index > read_attr->ncounters) {
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ret = -EINVAL;
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goto err_bound;
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}
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mread_attr.out = kcalloc(mcounters->counters_num, sizeof(u64),
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GFP_KERNEL);
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if (!mread_attr.out) {
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ret = -ENOMEM;
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goto err_bound;
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}
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mread_attr.hw_cntrs_hndl = mcounters->hw_cntrs_hndl;
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mread_attr.flags = read_attr->flags;
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ret = mcounters->read_counters(counters->device, &mread_attr);
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if (ret)
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goto err_read;
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/* do the pass over the counters data array to assign according to the
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* descriptions and indexing pairs
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*/
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desc = mcounters->counters_data;
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for (i = 0; i < mcounters->ncounters; i++)
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read_attr->counters_buff[desc[i].index] += mread_attr.out[desc[i].description];
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err_read:
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kfree(mread_attr.out);
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err_bound:
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mutex_unlock(&mcounters->mcntrs_mutex);
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return ret;
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}
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static int mlx5_ib_destroy_counters(struct ib_counters *counters)
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static int mlx5_ib_destroy_counters(struct ib_counters *counters)
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{
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{
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struct mlx5_ib_mcounters *mcounters = to_mcounters(counters);
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struct mlx5_ib_mcounters *mcounters = to_mcounters(counters);
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@ -5483,6 +5525,7 @@ int mlx5_ib_stage_caps_init(struct mlx5_ib_dev *dev)
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dev->ib_dev.driver_id = RDMA_DRIVER_MLX5;
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dev->ib_dev.driver_id = RDMA_DRIVER_MLX5;
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dev->ib_dev.create_counters = mlx5_ib_create_counters;
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dev->ib_dev.create_counters = mlx5_ib_create_counters;
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dev->ib_dev.destroy_counters = mlx5_ib_destroy_counters;
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dev->ib_dev.destroy_counters = mlx5_ib_destroy_counters;
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dev->ib_dev.read_counters = mlx5_ib_read_counters;
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err = init_node_data(dev);
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err = init_node_data(dev);
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if (err)
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if (err)
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