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batman-adv: Adding hard_iface specific sysfs wrapper macros for UINT

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This allows us to easily add a sysfs parameter for an unsigned int
later, which is not for a batman mesh interface (e.g. bat0), but for a
common interface instead. It allows reading and writing an atomic_t in
hard_iface (instead of bat_priv compared to the mesh variant).

Developed by Linus during a 6 months trainee study period in Ascom
(Switzerland) AG.

Signed-off-by: Linus Luessing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
This commit is contained in:
Linus Luessing 2012-03-11 06:17:52 +08:00 committed by Antonio Quartulli
parent f245c38ba7
commit 9d853f6246
1 changed files with 43 additions and 0 deletions
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43
net/batman-adv/bat_sysfs.c
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@ -117,6 +117,49 @@ ssize_t show_##_name(struct kobject *kobj, \
static BAT_ATTR(_name, _mode, show_##_name, store_##_name)
#define BAT_ATTR_HIF_STORE_UINT(_name, _min, _max, _post_func) \
ssize_t store_##_name(struct kobject *kobj, struct attribute *attr, \
char *buff, size_t count) \
{ \
struct net_device *net_dev = kobj_to_netdev(kobj); \
struct hard_iface *hard_iface = hardif_get_by_netdev(net_dev); \
ssize_t length; \
\
if (!hard_iface) \
return 0; \
\
length = __store_uint_attr(buff, count, _min, _max, _post_func, \
attr, &hard_iface->_name, net_dev); \
\
hardif_free_ref(hard_iface); \
return length; \
}
#define BAT_ATTR_HIF_SHOW_UINT(_name) \
ssize_t show_##_name(struct kobject *kobj, \
struct attribute *attr, char *buff) \
{ \
struct net_device *net_dev = kobj_to_netdev(kobj); \
struct hard_iface *hard_iface = hardif_get_by_netdev(net_dev); \
ssize_t length; \
\
if (!hard_iface) \
return 0; \
\
length = sprintf(buff, "%i\n", atomic_read(&hard_iface->_name));\
\
hardif_free_ref(hard_iface); \
return length; \
}
/* Use this, if you are going to set [name] in hard_iface to an
* unsigned integer value*/
#define BAT_ATTR_HIF_UINT(_name, _mode, _min, _max, _post_func) \
static BAT_ATTR_HIF_STORE_UINT(_name, _min, _max, _post_func) \
static BAT_ATTR_HIF_SHOW_UINT(_name) \
static BAT_ATTR(_name, _mode, show_##_name, store_##_name)
static int store_bool_attr(char *buff, size_t count,
struct net_device *net_dev,
const char *attr_name, atomic_t *attr)