From: Leon Romanovsky <leonro@mellanox.com>
Date: Sun, 5 Apr 2020 20:57:00 +0300
Subject: net/mlx5: Provide simplified command interfaces
Patch-mainline: v5.8-rc1
Git-commit: bb7fc863729b45f0fbcdea991d0465d855ffd831
References: jsc#SLE-15172
Many mlx5_cmd_exec() callers are not interested in the output from that
command or have standard in/out structures. Those callers simply allocate
those structure on the stack and use sizeof() to provide in/out arguments.
In this naive approach provide simplified versions of mlx5_cmd_exec().
Reviewed-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
include/linux/mlx5/driver.h | 13 +++++++++++++
1 file changed, 13 insertions(+)
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -936,6 +936,19 @@ int mlx5_cmd_exec_cb(struct mlx5_async_c
int mlx5_cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out,
int out_size);
+
+#define mlx5_cmd_exec_inout(dev, ifc_cmd, in, out) \
+ ({ \
+ mlx5_cmd_exec(dev, in, MLX5_ST_SZ_BYTES(ifc_cmd##_in), out, \
+ MLX5_ST_SZ_BYTES(ifc_cmd##_out)); \
+ })
+
+#define mlx5_cmd_exec_in(dev, ifc_cmd, in) \
+ ({ \
+ u32 _out[MLX5_ST_SZ_DW(ifc_cmd##_out)] = {}; \
+ mlx5_cmd_exec_inout(dev, ifc_cmd, in, _out); \
+ })
+
int mlx5_cmd_exec_polling(struct mlx5_core_dev *dev, void *in, int in_size,
void *out, int out_size);
void mlx5_cmd_mbox_status(void *out, u8 *status, u32 *syndrome);