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Date: Sun, 28 Nov 2021 14:42:44 +0200
From: Leon Romanovsky <leon@...nel.org>
To: "David S . Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>
Cc: Leon Romanovsky <leonro@...dia.com>, Andrew Lunn <andrew@...n.ch>,
Florian Fainelli <f.fainelli@...il.com>,
Ido Schimmel <idosch@...dia.com>, Jiri Pirko <jiri@...dia.com>,
linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
Vivien Didelot <vivien.didelot@...il.com>,
Vladimir Oltean <olteanv@...il.com>
Subject: [PATCH net-next v1] devlink: Simplify devlink resources unregister call
From: Leon Romanovsky <leonro@...dia.com>
The devlink_resources_unregister() used second parameter as an
entry point for the recursive removal of devlink resources. None
of external to devlink users needed to use this field, so lat's
remove it.
Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
v1:
* Sent as standalone change
* Moved struct recource from .h to .c file
* Added missing descriptions fields in struct resource
v0: https://lore.kernel.org/all/cover.1637173517.git.leonro@nvidia.com
---
drivers/net/ethernet/mellanox/mlxsw/core.c | 8 +--
.../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(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c
index 3fd3812b8f31..0d1f08bbf631 100644
--- 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 mlxsw_core *mlxsw_core, bool reload)
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 @@ __mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info,
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(struct mlxsw_core *mlxsw_core,
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(struct mlxsw_core *mlxsw_core,
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);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 24157bb59881..f1ed7660b0b5 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -3336,7 +3336,7 @@ static int mlxsw_sp1_resources_register(struct mlxsw_core *mlxsw_core)
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;
}
@@ -3370,7 +3370,7 @@ static int mlxsw_sp2_resources_register(struct mlxsw_core *mlxsw_core)
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;
}
diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c
index 54345c096a16..08d7b465a0de 100644
--- a/drivers/net/netdevsim/dev.c
+++ b/drivers/net/netdevsim/dev.c
@@ -1622,7 +1622,7 @@ int nsim_drv_probe(struct nsim_bus_dev *nsim_bus_dev)
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_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);
diff --git a/include/net/devlink.h b/include/net/devlink.h
index e3c88fabd700..043fcec8b0aa 100644
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -361,33 +361,6 @@ devlink_resource_size_params_init(struct devlink_resource_size_params *size_para
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 devlink *devlink,
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);
diff --git a/net/core/devlink.c b/net/core/devlink.c
index fd21022145a3..db3b52110cf2 100644
--- 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 @@ int devlink_resource_register(struct devlink *devlink,
}
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);
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index ea5169e671ae..d9d0d227092c 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -406,7 +406,7 @@ EXPORT_SYMBOL_GPL(dsa_devlink_resource_register);
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);
--
2.33.1
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