From: Jiri Pirko <jiri@mellanox.com>
Date: Wed, 28 Feb 2018 13:12:09 +0100
Subject: mlxsw: spectrum: Fix handling of resource_size_param
Patch-mainline: v4.16-rc5
Git-commit: 77d270967c5f723e5910dd073962b6372d7ef466
References: bsc#1112374
Current code uses global variables, adjusts them and passes pointer down
to devlink. With every other mlxsw_core instance, the previously passed
pointer values are rewritten. Fix this by de-globalize the variables and
also memcpy size_params during devlink resource registration.
Also, introduce a convenient size_param_init helper.
Fixes: ef3116e5403e ("mlxsw: spectrum: Register KVD resources with devlink")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 75 ++++++++++++-------------
include/net/devlink.h | 18 +++++-
net/core/devlink.c | 7 +-
3 files changed, 57 insertions(+), 43 deletions(-)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -4207,13 +4207,12 @@ static struct devlink_resource_ops mlxsw
.size_validate = mlxsw_sp_resource_kvd_hash_double_size_validate,
};
-static struct devlink_resource_size_params mlxsw_sp_kvd_size_params;
-static struct devlink_resource_size_params mlxsw_sp_linear_size_params;
-static struct devlink_resource_size_params mlxsw_sp_hash_single_size_params;
-static struct devlink_resource_size_params mlxsw_sp_hash_double_size_params;
-
static void
-mlxsw_sp_resource_size_params_prepare(struct mlxsw_core *mlxsw_core)
+mlxsw_sp_resource_size_params_prepare(struct mlxsw_core *mlxsw_core,
+ struct devlink_resource_size_params *kvd_size_params,
+ struct devlink_resource_size_params *linear_size_params,
+ struct devlink_resource_size_params *hash_double_size_params,
+ struct devlink_resource_size_params *hash_single_size_params)
{
u32 single_size_min = MLXSW_CORE_RES_GET(mlxsw_core,
KVD_SINGLE_MIN_SIZE);
@@ -4222,37 +4221,35 @@ mlxsw_sp_resource_size_params_prepare(st
u32 kvd_size = MLXSW_CORE_RES_GET(mlxsw_core, KVD_SIZE);
u32 linear_size_min = 0;
- /* KVD top resource */
- mlxsw_sp_kvd_size_params.size_min = kvd_size;
- mlxsw_sp_kvd_size_params.size_max = kvd_size;
- mlxsw_sp_kvd_size_params.size_granularity = MLXSW_SP_KVD_GRANULARITY;
- mlxsw_sp_kvd_size_params.unit = DEVLINK_RESOURCE_UNIT_ENTRY;
-
- /* Linear part init */
- mlxsw_sp_linear_size_params.size_min = linear_size_min;
- mlxsw_sp_linear_size_params.size_max = kvd_size - single_size_min -
- double_size_min;
- mlxsw_sp_linear_size_params.size_granularity = MLXSW_SP_KVD_GRANULARITY;
- mlxsw_sp_linear_size_params.unit = DEVLINK_RESOURCE_UNIT_ENTRY;
-
- /* Hash double part init */
- mlxsw_sp_hash_double_size_params.size_min = double_size_min;
- mlxsw_sp_hash_double_size_params.size_max = kvd_size - single_size_min -
- linear_size_min;
- mlxsw_sp_hash_double_size_params.size_granularity = MLXSW_SP_KVD_GRANULARITY;
- mlxsw_sp_hash_double_size_params.unit = DEVLINK_RESOURCE_UNIT_ENTRY;
-
- /* Hash single part init */
- mlxsw_sp_hash_single_size_params.size_min = single_size_min;
- mlxsw_sp_hash_single_size_params.size_max = kvd_size - double_size_min -
- linear_size_min;
- mlxsw_sp_hash_single_size_params.size_granularity = MLXSW_SP_KVD_GRANULARITY;
- mlxsw_sp_hash_single_size_params.unit = DEVLINK_RESOURCE_UNIT_ENTRY;
+ devlink_resource_size_params_init(kvd_size_params, kvd_size, kvd_size,
+ MLXSW_SP_KVD_GRANULARITY,
+ DEVLINK_RESOURCE_UNIT_ENTRY);
+ devlink_resource_size_params_init(linear_size_params, linear_size_min,
+ kvd_size - single_size_min -
+ double_size_min,
+ MLXSW_SP_KVD_GRANULARITY,
+ DEVLINK_RESOURCE_UNIT_ENTRY);
+ devlink_resource_size_params_init(hash_double_size_params,
+ double_size_min,
+ kvd_size - single_size_min -
+ linear_size_min,
+ MLXSW_SP_KVD_GRANULARITY,
+ DEVLINK_RESOURCE_UNIT_ENTRY);
+ devlink_resource_size_params_init(hash_single_size_params,
+ single_size_min,
+ kvd_size - double_size_min -
+ linear_size_min,
+ MLXSW_SP_KVD_GRANULARITY,
+ DEVLINK_RESOURCE_UNIT_ENTRY);
}
static int mlxsw_sp_resources_register(struct mlxsw_core *mlxsw_core)
{
struct devlink *devlink = priv_to_devlink(mlxsw_core);
+ struct devlink_resource_size_params hash_single_size_params;
+ struct devlink_resource_size_params hash_double_size_params;
+ struct devlink_resource_size_params linear_size_params;
+ struct devlink_resource_size_params kvd_size_params;
u32 kvd_size, single_size, double_size, linear_size;
const struct mlxsw_config_profile *profile;
int err;
@@ -4261,13 +4258,17 @@ static int mlxsw_sp_resources_register(s
if (!MLXSW_CORE_RES_VALID(mlxsw_core, KVD_SIZE))
return -EIO;
- mlxsw_sp_resource_size_params_prepare(mlxsw_core);
+ mlxsw_sp_resource_size_params_prepare(mlxsw_core, &kvd_size_params,
+ &linear_size_params,
+ &hash_double_size_params,
+ &hash_single_size_params);
+
kvd_size = MLXSW_CORE_RES_GET(mlxsw_core, KVD_SIZE);
err = devlink_resource_register(devlink, MLXSW_SP_RESOURCE_NAME_KVD,
true, kvd_size,
MLXSW_SP_RESOURCE_KVD,
DEVLINK_RESOURCE_ID_PARENT_TOP,
- &mlxsw_sp_kvd_size_params,
+ &kvd_size_params,
&mlxsw_sp_resource_kvd_ops);
if (err)
return err;
@@ -4277,7 +4278,7 @@ static int mlxsw_sp_resources_register(s
false, linear_size,
MLXSW_SP_RESOURCE_KVD_LINEAR,
MLXSW_SP_RESOURCE_KVD,
- &mlxsw_sp_linear_size_params,
+ &linear_size_params,
&mlxsw_sp_resource_kvd_linear_ops);
if (err)
return err;
@@ -4291,7 +4292,7 @@ static int mlxsw_sp_resources_register(s
false, double_size,
MLXSW_SP_RESOURCE_KVD_HASH_DOUBLE,
MLXSW_SP_RESOURCE_KVD,
- &mlxsw_sp_hash_double_size_params,
+ &hash_double_size_params,
&mlxsw_sp_resource_kvd_hash_double_ops);
if (err)
return err;
@@ -4301,7 +4302,7 @@ static int mlxsw_sp_resources_register(s
false, single_size,
MLXSW_SP_RESOURCE_KVD_HASH_SINGLE,
MLXSW_SP_RESOURCE_KVD,
- &mlxsw_sp_hash_single_size_params,
+ &hash_single_size_params,
&mlxsw_sp_resource_kvd_hash_single_ops);
if (err)
return err;
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -257,6 +257,18 @@ struct devlink_resource_size_params {
enum devlink_resource_unit unit;
};
+static inline void
+devlink_resource_size_params_init(struct devlink_resource_size_params *size_params,
+ u64 size_min, u64 size_max,
+ u64 size_granularity,
+ enum devlink_resource_unit unit)
+{
+ size_params->size_min = size_min;
+ size_params->size_max = size_max;
+ size_params->size_granularity = size_granularity;
+ size_params->unit = unit;
+}
+
/**
* struct devlink_resource - devlink resource
* @name: name of the resource
@@ -278,7 +290,7 @@ struct devlink_resource {
u64 size_new;
bool size_valid;
struct devlink_resource *parent;
- struct devlink_resource_size_params *size_params;
+ struct devlink_resource_size_params size_params;
struct list_head list;
struct list_head resource_list;
const struct devlink_resource_ops *resource_ops;
@@ -402,7 +414,7 @@ int devlink_resource_register(struct dev
u64 resource_size,
u64 resource_id,
u64 parent_resource_id,
- struct devlink_resource_size_params *size_params,
+ const struct devlink_resource_size_params *size_params,
const struct devlink_resource_ops *resource_ops);
void devlink_resources_unregister(struct devlink *devlink,
struct devlink_resource *resource);
@@ -557,7 +569,7 @@ devlink_resource_register(struct devlink
u64 resource_size,
u64 resource_id,
u64 parent_resource_id,
- struct devlink_resource_size_params *size_params,
+ const struct devlink_resource_size_params *size_params,
const struct devlink_resource_ops *resource_ops)
{
return 0;
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -2379,7 +2379,7 @@ devlink_resource_size_params_put(struct
{
struct devlink_resource_size_params *size_params;
- size_params = resource->size_params;
+ size_params = &resource->size_params;
if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
size_params->size_granularity, DEVLINK_ATTR_PAD) ||
nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
@@ -3156,7 +3156,7 @@ int devlink_resource_register(struct dev
u64 resource_size,
u64 resource_id,
u64 parent_resource_id,
- struct devlink_resource_size_params *size_params,
+ const struct devlink_resource_size_params *size_params,
const struct devlink_resource_ops *resource_ops)
{
struct devlink_resource *resource;
@@ -3199,7 +3199,8 @@ int devlink_resource_register(struct dev
resource->id = resource_id;
resource->resource_ops = resource_ops;
resource->size_valid = true;
- resource->size_params = size_params;
+ memcpy(&resource->size_params, size_params,
+ sizeof(resource->size_params));
INIT_LIST_HEAD(&resource->resource_list);
list_add_tail(&resource->list, resource_list);
out: