From: Moni Shoua <monis@xxxxxxxxxxxx>
Sometimes upper layers may want to prevent the destruction of a core
resource for a period of time while work on that resource is in
progress. Add API to support this.
Signed-off-by: Moni Shoua <monis@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
---
drivers/net/ethernet/mellanox/mlx5/core/qp.c | 16 ++++++++++++++++
include/linux/mlx5/qp.h | 5 +++++
2 files changed, 21 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/qp.c b/drivers/net/ethernet/mellanox/mlx5/core/qp.c
index 690dc1dd9391..cba4a435043a 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/qp.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/qp.c
@@ -670,3 +670,19 @@ int mlx5_core_query_q_counter(struct mlx5_core_dev *dev, u16 counter_id,
return mlx5_cmd_exec(dev, in, sizeof(in), out, out_size);
}
EXPORT_SYMBOL_GPL(mlx5_core_query_q_counter);
+
+struct mlx5_core_rsc_common *mlx5_core_res_hold(struct mlx5_core_dev *dev,
+ int res_num,
+ enum mlx5_res_type res_type)
+{
+ u32 rsn = res_num | (res_type << MLX5_USER_INDEX_LEN);
+
+ return mlx5_get_rsc(dev, rsn);
+}
+EXPORT_SYMBOL_GPL(mlx5_core_res_hold);
+
+void mlx5_core_res_put(struct mlx5_core_rsc_common *res)
+{
+ mlx5_core_put_rsc(res);
+}
+EXPORT_SYMBOL_GPL(mlx5_core_res_put);
diff --git a/include/linux/mlx5/qp.h b/include/linux/mlx5/qp.h
index fbe322c966bc..b26ea9077384 100644
--- a/include/linux/mlx5/qp.h
+++ b/include/linux/mlx5/qp.h
@@ -596,6 +596,11 @@ int mlx5_core_dealloc_q_counter(struct mlx5_core_dev *dev, u16 counter_id);
int mlx5_core_query_q_counter(struct mlx5_core_dev *dev, u16 counter_id,
int reset, void *out, int out_size);
+struct mlx5_core_rsc_common *mlx5_core_res_hold(struct mlx5_core_dev *dev,
+ int res_num,
+ enum mlx5_res_type res_type);
+void mlx5_core_res_put(struct mlx5_core_rsc_common *res);
+
static inline const char *mlx5_qp_type_str(int type)
{
switch (type) {
--
2.19.1
