From: Leon Romanovsky <leonro@nvidia.com>
Date: Tue, 30 Nov 2021 12:16:20 +0200
Subject: devlink: Simplify devlink resources unregister call
Patch-mainline: v5.17-rc1
Git-commit: 4c897cfc46a554a523343fc3296333c473a2fc52
References: jsc#PED-1549
The devlink_resources_unregister() used second parameter as an
entry point for the recursive removal of devlink resources. None
of the callers outside of devlink core needed to use this field,
so let's remove it.
As part of this removal, the "struct devlink_resource" was moved
from .h to .c file as it is not possible to use in any place in
the code except devlink.c.
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/mellanox/mlxsw/core.c | 8 +--
drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 4 -
drivers/net/netdevsim/dev.c | 4 -
include/net/devlink.h | 30 -----------
net/core/devlink.c | 63 +++++++++++++++++++------
net/dsa/dsa.c | 2
6 files changed, 58 insertions(+), 53 deletions(-)
--- a/drivers/net/ethernet/mellanox/mlxsw/core.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.c
@@ -160,7 +160,7 @@ static void mlxsw_ports_fini(struct mlxs
devlink_resource_occ_get_unregister(devlink, MLXSW_CORE_RESOURCE_PORTS);
if (!reload)
- devlink_resources_unregister(priv_to_devlink(mlxsw_core), NULL);
+ devlink_resources_unregister(priv_to_devlink(mlxsw_core));
kfree(mlxsw_core->ports);
}
@@ -2033,7 +2033,7 @@ err_alloc_lag_mapping:
mlxsw_ports_fini(mlxsw_core, reload);
err_ports_init:
if (!reload)
- devlink_resources_unregister(devlink, NULL);
+ devlink_resources_unregister(devlink);
err_register_resources:
mlxsw_bus->fini(bus_priv);
err_bus_init:
@@ -2099,7 +2099,7 @@ void mlxsw_core_bus_device_unregister(st
kfree(mlxsw_core->lag.mapping);
mlxsw_ports_fini(mlxsw_core, reload);
if (!reload)
- devlink_resources_unregister(devlink, NULL);
+ devlink_resources_unregister(devlink);
mlxsw_core->bus->fini(mlxsw_core->bus_priv);
if (!reload)
devlink_free(devlink);
@@ -2108,7 +2108,7 @@ void mlxsw_core_bus_device_unregister(st
reload_fail_deinit:
mlxsw_core_params_unregister(mlxsw_core);
- devlink_resources_unregister(devlink, NULL);
+ devlink_resources_unregister(devlink);
devlink_free(devlink);
}
EXPORT_SYMBOL(mlxsw_core_bus_device_unregister);
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -3257,7 +3257,7 @@ err_resources_rif_mac_profile_register:
err_policer_resources_register:
err_resources_counter_register:
err_resources_span_register:
- devlink_resources_unregister(priv_to_devlink(mlxsw_core), NULL);
+ devlink_resources_unregister(priv_to_devlink(mlxsw_core));
return err;
}
@@ -3291,7 +3291,7 @@ err_resources_rif_mac_profile_register:
err_policer_resources_register:
err_resources_counter_register:
err_resources_span_register:
- devlink_resources_unregister(priv_to_devlink(mlxsw_core), NULL);
+ devlink_resources_unregister(priv_to_devlink(mlxsw_core));
return err;
}
--- a/drivers/net/netdevsim/dev.c
+++ b/drivers/net/netdevsim/dev.c
@@ -1622,7 +1622,7 @@ err_params_unregister:
devlink_params_unregister(devlink, nsim_devlink_params,
ARRAY_SIZE(nsim_devlink_params));
err_dl_unregister:
- devlink_resources_unregister(devlink, NULL);
+ devlink_resources_unregister(devlink);
err_vfc_free:
kfree(nsim_dev->vfconfigs);
err_devlink_free:
@@ -1668,7 +1668,7 @@ void nsim_drv_remove(struct nsim_bus_dev
nsim_dev_debugfs_exit(nsim_dev);
devlink_params_unregister(devlink, nsim_devlink_params,
ARRAY_SIZE(nsim_devlink_params));
- devlink_resources_unregister(devlink, NULL);
+ devlink_resources_unregister(devlink);
kfree(nsim_dev->vfconfigs);
devlink_free(devlink);
dev_set_drvdata(&nsim_bus_dev->dev, NULL);
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -361,33 +361,6 @@ devlink_resource_size_params_init(struct
typedef u64 devlink_resource_occ_get_t(void *priv);
-/**
- * struct devlink_resource - devlink resource
- * @name: name of the resource
- * @id: id, per devlink instance
- * @size: size of the resource
- * @size_new: updated size of the resource, reload is needed
- * @size_valid: valid in case the total size of the resource is valid
- * including its children
- * @parent: parent resource
- * @size_params: size parameters
- * @list: parent list
- * @resource_list: list of child resources
- */
-struct devlink_resource {
- const char *name;
- u64 id;
- u64 size;
- u64 size_new;
- bool size_valid;
- struct devlink_resource *parent;
- struct devlink_resource_size_params size_params;
- struct list_head list;
- struct list_head resource_list;
- devlink_resource_occ_get_t *occ_get;
- void *occ_get_priv;
-};
-
#define DEVLINK_RESOURCE_ID_PARENT_TOP 0
#define DEVLINK_RESOURCE_GENERIC_NAME_PORTS "physical_ports"
@@ -1571,8 +1544,7 @@ int devlink_resource_register(struct dev
u64 resource_id,
u64 parent_resource_id,
const struct devlink_resource_size_params *size_params);
-void devlink_resources_unregister(struct devlink *devlink,
- struct devlink_resource *resource);
+void devlink_resources_unregister(struct devlink *devlink);
int devlink_resource_size_get(struct devlink *devlink,
u64 resource_id,
u64 *p_resource_size);
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -69,6 +69,35 @@ struct devlink {
char priv[] __aligned(NETDEV_ALIGN);
};
+/**
+ * struct devlink_resource - devlink resource
+ * @name: name of the resource
+ * @id: id, per devlink instance
+ * @size: size of the resource
+ * @size_new: updated size of the resource, reload is needed
+ * @size_valid: valid in case the total size of the resource is valid
+ * including its children
+ * @parent: parent resource
+ * @size_params: size parameters
+ * @list: parent list
+ * @resource_list: list of child resources
+ * @occ_get: occupancy getter callback
+ * @occ_get_priv: occupancy getter callback priv
+ */
+struct devlink_resource {
+ const char *name;
+ u64 id;
+ u64 size;
+ u64 size_new;
+ bool size_valid;
+ struct devlink_resource *parent;
+ struct devlink_resource_size_params size_params;
+ struct list_head list;
+ struct list_head resource_list;
+ devlink_resource_occ_get_t *occ_get;
+ void *occ_get_priv;
+};
+
void *devlink_priv(struct devlink *devlink)
{
return &devlink->priv;
@@ -9908,34 +9937,38 @@ out:
}
EXPORT_SYMBOL_GPL(devlink_resource_register);
+static void devlink_resource_unregister(struct devlink *devlink,
+ struct devlink_resource *resource)
+{
+ struct devlink_resource *tmp, *child_resource;
+
+ list_for_each_entry_safe(child_resource, tmp, &resource->resource_list,
+ list) {
+ devlink_resource_unregister(devlink, child_resource);
+ list_del(&child_resource->list);
+ kfree(child_resource);
+ }
+}
+
/**
* devlink_resources_unregister - free all resources
*
* @devlink: devlink
- * @resource: resource
*/
-void devlink_resources_unregister(struct devlink *devlink,
- struct devlink_resource *resource)
+void devlink_resources_unregister(struct devlink *devlink)
{
struct devlink_resource *tmp, *child_resource;
- struct list_head *resource_list;
-
- if (resource)
- resource_list = &resource->resource_list;
- else
- resource_list = &devlink->resource_list;
- if (!resource)
- mutex_lock(&devlink->lock);
+ mutex_lock(&devlink->lock);
- list_for_each_entry_safe(child_resource, tmp, resource_list, list) {
- devlink_resources_unregister(devlink, child_resource);
+ list_for_each_entry_safe(child_resource, tmp, &devlink->resource_list,
+ list) {
+ devlink_resource_unregister(devlink, child_resource);
list_del(&child_resource->list);
kfree(child_resource);
}
- if (!resource)
- mutex_unlock(&devlink->lock);
+ mutex_unlock(&devlink->lock);
}
EXPORT_SYMBOL_GPL(devlink_resources_unregister);
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -406,7 +406,7 @@ EXPORT_SYMBOL_GPL(dsa_devlink_resource_r
void dsa_devlink_resources_unregister(struct dsa_switch *ds)
{
- devlink_resources_unregister(ds->devlink, NULL);
+ devlink_resources_unregister(ds->devlink);
}
EXPORT_SYMBOL_GPL(dsa_devlink_resources_unregister);