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net/mlx5: Expose max possible SFs via devlink resource

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Introduce devlink resource for exposing max possible SFs on mlx5
devices.

For example:
$ devlink resource show pci/0000:00:0b.0
pci/0000:00:0b.0:
  name max_local_SFs size 5 unit entry dpipe_tables none
  name max_external_SFs size 0 unit entry dpipe_tables none

Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Shay Drory
2023-07-13 14:54:57 +03:00
committed by Saeed Mahameed
parent 53b836a44d
commit 6486c0f44e
2 changed files with 48 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/net/ethernet/mellanox/mlx5/core/devlink.h
View File

@@ -6,6 +6,14 @@
#include <net/devlink.h>
enum mlx5_devlink_resource_id {
MLX5_DL_RES_MAX_LOCAL_SFS = 1,
MLX5_DL_RES_MAX_EXTERNAL_SFS,
__MLX5_ID_RES_MAX,
MLX5_ID_RES_MAX = __MLX5_ID_RES_MAX - 1,
};
enum mlx5_devlink_param_id {
MLX5_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
MLX5_DEVLINK_PARAM_ID_FLOW_STEERING_MODE,

44
drivers/net/ethernet/mellanox/mlx5/core/sf/hw_table.c
View File

@@ -9,6 +9,7 @@
#include "mlx5_core.h"
#include "eswitch.h"
#include "diag/sf_tracepoint.h"
#include "devlink.h"
struct mlx5_sf_hw {
u32 usr_sfnum;
@@ -243,6 +244,32 @@ static void mlx5_sf_hw_table_hwc_cleanup(struct mlx5_sf_hwc_table *hwc)
kfree(hwc->sfs);
}
static void mlx5_sf_hw_table_res_unregister(struct mlx5_core_dev *dev)
{
devl_resources_unregister(priv_to_devlink(dev));
}
static int mlx5_sf_hw_table_res_register(struct mlx5_core_dev *dev, u16 max_fn,
u16 max_ext_fn)
{
struct devlink_resource_size_params size_params;
struct devlink *devlink = priv_to_devlink(dev);
int err;
devlink_resource_size_params_init(&size_params, max_fn, max_fn, 1,
DEVLINK_RESOURCE_UNIT_ENTRY);
err = devl_resource_register(devlink, "max_local_SFs", max_fn, MLX5_DL_RES_MAX_LOCAL_SFS,
DEVLINK_RESOURCE_ID_PARENT_TOP, &size_params);
if (err)
return err;
devlink_resource_size_params_init(&size_params, max_ext_fn, max_ext_fn, 1,
DEVLINK_RESOURCE_UNIT_ENTRY);
return devl_resource_register(devlink, "max_external_SFs", max_ext_fn,
MLX5_DL_RES_MAX_EXTERNAL_SFS, DEVLINK_RESOURCE_ID_PARENT_TOP,
&size_params);
}
int mlx5_sf_hw_table_init(struct mlx5_core_dev *dev)
{
struct mlx5_sf_hw_table *table;
@@ -262,12 +289,17 @@ int mlx5_sf_hw_table_init(struct mlx5_core_dev *dev)
if (err)
return err;
if (mlx5_sf_hw_table_res_register(dev, max_fn, max_ext_fn))
mlx5_core_dbg(dev, "failed to register max SFs resources");
if (!max_fn && !max_ext_fn)
return 0;
table = kzalloc(sizeof(*table), GFP_KERNEL);
if (!table)
return -ENOMEM;
if (!table) {
err = -ENOMEM;
goto alloc_err;
}
mutex_init(&table->table_lock);
table->dev = dev;
@@ -291,6 +323,8 @@ int mlx5_sf_hw_table_init(struct mlx5_core_dev *dev)
table_err:
mutex_destroy(&table->table_lock);
kfree(table);
alloc_err:
mlx5_sf_hw_table_res_unregister(dev);
return err;
}
@@ -299,12 +333,14 @@ void mlx5_sf_hw_table_cleanup(struct mlx5_core_dev *dev)
struct mlx5_sf_hw_table *table = dev->priv.sf_hw_table;
if (!table)
return;
goto res_unregister;
mutex_destroy(&table->table_lock);
mlx5_sf_hw_table_hwc_cleanup(&table->hwc[MLX5_SF_HWC_EXTERNAL]);
mlx5_sf_hw_table_hwc_cleanup(&table->hwc[MLX5_SF_HWC_LOCAL]);
mutex_destroy(&table->table_lock);
kfree(table);
res_unregister:
mlx5_sf_hw_table_res_unregister(dev);
}
static int mlx5_sf_hw_vhca_event(struct notifier_block *nb, unsigned long opcode, void *data)