[PATCH rdma-next v3 13/14] IB/mlx5: Add flow counters read support
From: Leon Romanovsky <leon@kernel.org>
Date: 2018-05-31 13:44:24
Also in:
linux-rdma
Subsystem:
infiniband subsystem, mellanox mlx5 ib driver, the rest · Maintainers:
Jason Gunthorpe, Leon Romanovsky, Linus Torvalds
From: Raed Salem <redacted> Implements the flow counters read wrapper. Reviewed-by: Yishai Hadas <redacted> Signed-off-by: Raed Salem <redacted> Signed-off-by: Leon Romanovsky <redacted> --- drivers/infiniband/hw/mlx5/main.c | 15 +++++++++++++++ drivers/infiniband/hw/mlx5/mlx5_ib.h | 13 ++++++++++++- 2 files changed, 27 insertions(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 6a5600db897e..e7c90c151165 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c@@ -3157,6 +3157,19 @@ static void set_underlay_qp(struct mlx5_ib_dev *dev, } } +static int read_flow_counters(struct ib_device *ibdev, + struct mlx5_read_counters_attr *read_attr) +{ + struct mlx5_fc *fc = read_attr->hw_cntrs_hndl; + struct mlx5_ib_dev *dev = to_mdev(ibdev); + + return mlx5_fc_query(dev->mdev, fc, + &read_attr->out[IB_COUNTER_PACKETS], + &read_attr->out[IB_COUNTER_BYTES]); +} + +/* flow counters currently expose two counters packets and bytes */ +#define FLOW_COUNTERS_NUM 2 static int counters_set_description(struct ib_counters *counters, enum mlx5_ib_counters_type counters_type, struct mlx5_ib_flow_counters_desc *desc_data,
@@ -3171,6 +3184,8 @@ static int counters_set_description(struct ib_counters *counters, /* init the fields for the object */ mcounters->type = counters_type; + mcounters->read_counters = read_flow_counters; + mcounters->counters_num = FLOW_COUNTERS_NUM; mcounters->ncounters = ncounters; /* each counter entry have both description and index pair */ for (i = 0; i < ncounters; i++) {
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index 155bca627222..d89c8fe626f6 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h@@ -814,6 +814,12 @@ struct mlx5_memic { DECLARE_BITMAP(memic_alloc_pages, MLX5_MAX_MEMIC_PAGES); }; +struct mlx5_read_counters_attr { + struct mlx5_fc *hw_cntrs_hndl; + u64 *out; + u32 flags; +}; + enum mlx5_ib_counters_type { MLX5_IB_COUNTERS_FLOW, };
@@ -821,7 +827,12 @@ enum mlx5_ib_counters_type { struct mlx5_ib_mcounters { struct ib_counters ibcntrs; enum mlx5_ib_counters_type type; - void *hw_cntrs_hndl; + /* number of counters supported for this counters type */ + u32 counters_num; + struct mlx5_fc *hw_cntrs_hndl; + /* read function for this counters type */ + int (*read_counters)(struct ib_device *ibdev, + struct mlx5_read_counters_attr *read_attr); /* max index set as part of create_flow */ u32 cntrs_max_index; /* number of counters data entries (<description,index> pair) */
--
2.14.3