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path: root/drivers/infiniband/hw/mlx5/mad.c
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Diffstat (limited to 'drivers/infiniband/hw/mlx5/mad.c')
-rw-r--r--drivers/infiniband/hw/mlx5/mad.c25
1 files changed, 23 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/mlx5/mad.c b/drivers/infiniband/hw/mlx5/mad.c
index b4dc52392275..9c8a7b206dcf 100644
--- a/drivers/infiniband/hw/mlx5/mad.c
+++ b/drivers/infiniband/hw/mlx5/mad.c
@@ -147,6 +147,28 @@ static void pma_cnt_assign(struct ib_pma_portcounters *pma_cnt,
vl_15_dropped);
}
+static int query_ib_ppcnt(struct mlx5_core_dev *dev, u8 port_num, void *out,
+ size_t sz)
+{
+ u32 *in;
+ int err;
+
+ in = kvzalloc(sz, GFP_KERNEL);
+ if (!in) {
+ err = -ENOMEM;
+ return err;
+ }
+
+ MLX5_SET(ppcnt_reg, in, local_port, port_num);
+
+ MLX5_SET(ppcnt_reg, in, grp, MLX5_INFINIBAND_PORT_COUNTERS_GROUP);
+ err = mlx5_core_access_reg(dev, in, sz, out,
+ sz, MLX5_REG_PPCNT, 0, 0);
+
+ kvfree(in);
+ return err;
+}
+
static int process_pma_cmd(struct mlx5_ib_dev *dev, u32 port_num,
const struct ib_mad *in_mad, struct ib_mad *out_mad)
{
@@ -208,8 +230,7 @@ static int process_pma_cmd(struct mlx5_ib_dev *dev, u32 port_num,
goto done;
}
- err = mlx5_core_query_ib_ppcnt(mdev, mdev_port_num,
- out_cnt, sz);
+ err = query_ib_ppcnt(mdev, mdev_port_num, out_cnt, sz);
if (!err)
pma_cnt_assign(pma_cnt, out_cnt);
}