leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

devlink: Add helper function for safely copy string param

Browse Source 
Devlink string param buffer is allocated at the size of
DEVLINK_PARAM_MAX_STRING_VALUE. Add helper function which makes sure
this size is not exceeded.
Renamed DEVLINK_PARAM_MAX_STRING_VALUE to
__DEVLINK_PARAM_MAX_STRING_VALUE to emphasize that it should be used by
devlink only. The driver should use the helper function instead to
verify it doesn't exceed the allowed length.

Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Moshe Shemesh
2018-10-10 16:09:27 +03:00
committed by David S. Miller
parent 1276534c98
commit bde74ad10e
2 changed files with 28 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
include/net/devlink.h
View File

@@ -298,7 +298,7 @@ struct devlink_resource {
#define DEVLINK_RESOURCE_ID_PARENT_TOP 0
#define DEVLINK_PARAM_MAX_STRING_VALUE 32
#define __DEVLINK_PARAM_MAX_STRING_VALUE 32
enum devlink_param_type {
DEVLINK_PARAM_TYPE_U8,
DEVLINK_PARAM_TYPE_U16,
@@ -311,7 +311,7 @@ union devlink_param_value {
u8 vu8;
u16 vu16;
u32 vu32;
char vstr[DEVLINK_PARAM_MAX_STRING_VALUE];
char vstr[__DEVLINK_PARAM_MAX_STRING_VALUE];
bool vbool;
};
@@ -553,6 +553,8 @@ int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
union devlink_param_value init_val);
void devlink_param_value_changed(struct devlink *devlink, u32 param_id);
void devlink_param_value_str_fill(union devlink_param_value *dst_val,
const char *src);
struct devlink_region *devlink_region_create(struct devlink *devlink,
const char *region_name,
u32 region_max_snapshots,
@@ -789,6 +791,12 @@ devlink_param_value_changed(struct devlink *devlink, u32 param_id)
{
}
static inline void
devlink_param_value_str_fill(union devlink_param_value *dst_val,
const char *src)
{
}
static inline struct devlink_region *
devlink_region_create(struct devlink *devlink,
const char *region_name,