[PATCH rdma-next v2 09/13] RDMA/mlx5: Support optional counters in hw_stats initialization

Leon Romanovsky
2021-09-30T08:05:06Z

Add optional counter support when allocate and initialize hw_stats
structure. Optional counters have IB_STAT_FLAG_OPTIONAL flag set
and are disabled by default.

Signed-off-by: Aharon Landau <aharonl@nvidia.com>
Reviewed-by: Mark Zhang <markzhang@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
drivers/infiniband/hw/mlx5/counters.c | 90 ++++++++++++++++++++++-----
drivers/infiniband/hw/mlx5/mlx5_ib.h | 1 +
2 files changed, 75 insertions(+), 16 deletions(-)

diff --git a/drivers/infiniband/hw/mlx5/counters.c b/drivers/infiniband/hw/mlx5/counters.c
index d2208b3c5925..6aa54ee441db 100644
--- a/drivers/infiniband/hw/mlx5/counters.c
+++ b/drivers/infiniband/hw/mlx5/counters.c
@@ -75,6 +75,21 @@ static const struct mlx5_ib_counter ext_ppcnt_cnts[] = {
INIT_EXT_PPCNT_COUNTER(rx_icrc_encapsulated),
};

+#define INIT_OP_COUNTER(_name) \
+ { .name = #_name }
+
+static const struct mlx5_ib_counter basic_op_cnts[] = {
+ INIT_OP_COUNTER(cc_rx_ce_pkts),
+};
+
+static const struct mlx5_ib_counter rdmarx_cnp_op_cnts[] = {
+ INIT_OP_COUNTER(cc_rx_cnp_pkts),
+};
+
+static const struct mlx5_ib_counter rdmatx_cnp_op_cnts[] = {
+ INIT_OP_COUNTER(cc_tx_cnp_pkts),
+};
+
static int mlx5_ib_read_counters(struct ib_counters *counters,
struct ib_counters_read_attr *read_attr,
struct uverbs_attr_bundle *attrs)
@@ -161,17 +176,34 @@ u16 mlx5_ib_get_counters_id(struct mlx5_ib_dev *dev, u32 port_num)
return cnts->set_id;
}

+static struct rdma_hw_stats *do_alloc_stats(const struct mlx5_ib_counters *cnts)
+{
+ struct rdma_hw_stats *stats;
+ u32 num_hw_counters;
+ int i;
+
+ num_hw_counters = cnts->num_q_counters + cnts->num_cong_counters +
+ cnts->num_ext_ppcnt_counters;
+ stats = rdma_alloc_hw_stats_struct(cnts->descs,
+ num_hw_counters +
+ cnts->num_op_counters,
+ RDMA_HW_STATS_DEFAULT_LIFESPAN);
+ if (!stats)
+ return NULL;
+
+ for (i = 0; i < cnts->num_op_counters; i++)
+ set_bit(num_hw_counters + i, stats->is_disabled);
+
+ return stats;
+}
+
static struct rdma_hw_stats *
mlx5_ib_alloc_hw_device_stats(struct ib_device *ibdev)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
const struct mlx5_ib_counters *cnts = &dev->port[0].cnts;

- return rdma_alloc_hw_stats_struct(cnts->descs,
- cnts->num_q_counters +
- cnts->num_cong_counters +
- cnts->num_ext_ppcnt_counters,
- RDMA_HW_STATS_DEFAULT_LIFESPAN);
+ return do_alloc_stats(cnts);
}

static struct rdma_hw_stats *
@@ -180,11 +212,7 @@ mlx5_ib_alloc_hw_port_stats(struct ib_device *ibdev, u32 port_num)
struct mlx5_ib_dev *dev = to_mdev(ibdev);
const struct mlx5_ib_counters *cnts = &dev->port[port_num - 1].cnts;

- return rdma_alloc_hw_stats_struct(cnts->descs,
- cnts->num_q_counters +
- cnts->num_cong_counters +
- cnts->num_ext_ppcnt_counters,
- RDMA_HW_STATS_DEFAULT_LIFESPAN);
+ return do_alloc_stats(cnts);
}

static int mlx5_ib_query_q_counters(struct mlx5_core_dev *mdev,
@@ -302,11 +330,7 @@ mlx5_ib_counter_alloc_stats(struct rdma_counter *counter)
const struct mlx5_ib_counters *cnts =
get_counters(dev, counter->port - 1);

- return rdma_alloc_hw_stats_struct(cnts->descs,
- cnts->num_q_counters +
- cnts->num_cong_counters +
- cnts->num_ext_ppcnt_counters,
- RDMA_HW_STATS_DEFAULT_LIFESPAN);
+ return do_alloc_stats(cnts);
}

static int mlx5_ib_counter_update_stats(struct rdma_counter *counter)
@@ -425,13 +449,34 @@ static void mlx5_ib_fill_counters(struct mlx5_ib_dev *dev,
offsets[j] = ext_ppcnt_cnts[i].offset;
}
}
+
+ for (i = 0; i < ARRAY_SIZE(basic_op_cnts); i++, j++) {
+ descs[j].name = basic_op_cnts[i].name;
+ descs[j].flags |= IB_STAT_FLAG_OPTIONAL;
+ }
+
+ if (MLX5_CAP_FLOWTABLE(dev->mdev,
+ ft_field_support_2_nic_receive_rdma.bth_opcode)) {
+ for (i = 0; i < ARRAY_SIZE(rdmarx_cnp_op_cnts); i++, j++) {
+ descs[j].name = rdmarx_cnp_op_cnts[i].name;
+ descs[j].flags |= IB_STAT_FLAG_OPTIONAL;
+ }
+ }
+
+ if (MLX5_CAP_FLOWTABLE(dev->mdev,
+ ft_field_support_2_nic_transmit_rdma.bth_opcode)) {
+ for (i = 0; i < ARRAY_SIZE(rdmatx_cnp_op_cnts); i++, j++) {
+ descs[j].name = rdmatx_cnp_op_cnts[i].name;
+ descs[j].flags |= IB_STAT_FLAG_OPTIONAL;
+ }
+ }
}

static int __mlx5_ib_alloc_counters(struct mlx5_ib_dev *dev,
struct mlx5_ib_counters *cnts)
{
- u32 num_counters;
+ u32 num_counters, num_op_counters;

num_counters = ARRAY_SIZE(basic_q_cnts);

@@ -457,6 +502,19 @@ static int __mlx5_ib_alloc_counters(struct mlx5_ib_dev *dev,
cnts->num_ext_ppcnt_counters = ARRAY_SIZE(ext_ppcnt_cnts);
num_counters += ARRAY_SIZE(ext_ppcnt_cnts);
}
+
+ num_op_counters = ARRAY_SIZE(basic_op_cnts);
+
+ if (MLX5_CAP_FLOWTABLE(dev->mdev,
+ ft_field_support_2_nic_receive_rdma.bth_opcode))
+ num_op_counters += ARRAY_SIZE(rdmarx_cnp_op_cnts);
+
+ if (MLX5_CAP_FLOWTABLE(dev->mdev,
+ ft_field_support_2_nic_transmit_rdma.bth_opcode))
+ num_op_counters += ARRAY_SIZE(rdmatx_cnp_op_cnts);
+
+ cnts->num_op_counters = num_op_counters;
+ num_counters += num_op_counters;
cnts->descs = kcalloc(num_counters,
sizeof(struct rdma_stat_desc), GFP_KERNEL);
if (!cnts->descs)
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index 6f5451d96dd7..8215d7ab579d 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -803,6 +803,7 @@ struct mlx5_ib_counters {
u32 num_q_counters;
u32 num_cong_counters;
u32 num_ext_ppcnt_counters;
+ u32 num_op_counters;
u16 set_id;
};

--
2.31.1