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Commit 0744ff8f authored by Linus Lüssing's avatar Linus Lüssing Committed by Antonio Quartulli
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batman-adv: Add hard_iface specific sysfs wrapper macros for UINT 



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: default avatarLinus Luessing <linus.luessing@web.de>
Signed-off-by: default avatarMarek Lindner <mareklindner@neomailbox.ch>
[antonio@open-mesh.com: rename functions and move macros]
Signed-off-by: default avatarAntonio Quartulli <antonio@open-mesh.com>
parent f12d33f4

net/batman-adv/sysfs.c

+49 −0
Original line number Diff line number Diff line
@@ -242,6 +242,55 @@ ssize_t batadv_show_vlan_##_name(struct kobject *kobj, \ 
	static BATADV_ATTR_VLAN(_name, _mode, batadv_show_vlan_##_name,	\

				batadv_store_vlan_##_name)



#define BATADV_ATTR_HIF_STORE_UINT(_name, _var, _min, _max, _post_func)	\

ssize_t batadv_store_##_name(struct kobject *kobj,			\

			     struct attribute *attr, char *buff,	\

			     size_t count)				\

{									\

	struct net_device *net_dev = batadv_kobj_to_netdev(kobj);	\

	struct batadv_hard_iface *hard_iface;				\

	ssize_t length;							\

									\

	hard_iface = batadv_hardif_get_by_netdev(net_dev);		\

	if (!hard_iface)						\

		return 0;						\

									\

	length = __batadv_store_uint_attr(buff, count, _min, _max,	\

					  _post_func, attr,		\

					  &hard_iface->_var, net_dev);	\

									\

	batadv_hardif_put(hard_iface);				\

	return length;							\

}



#define BATADV_ATTR_HIF_SHOW_UINT(_name, _var)				\

ssize_t batadv_show_##_name(struct kobject *kobj,			\

			    struct attribute *attr, char *buff)		\

{									\

	struct net_device *net_dev = batadv_kobj_to_netdev(kobj);	\

	struct batadv_hard_iface *hard_iface;				\

	ssize_t length;							\

									\

	hard_iface = batadv_hardif_get_by_netdev(net_dev);		\

	if (!hard_iface)						\

		return 0;						\

									\

	length = sprintf(buff, "%i\n", atomic_read(&hard_iface->_var));	\

									\

	batadv_hardif_put(hard_iface);				\

	return length;							\

}



/* Use this, if you are going to set [name] in hard_iface to an

 * unsigned integer value

 */

#define BATADV_ATTR_HIF_UINT(_name, _var, _mode, _min, _max, _post_func)\

	static BATADV_ATTR_HIF_STORE_UINT(_name, _var, _min,		\

					  _max, _post_func)		\

	static BATADV_ATTR_HIF_SHOW_UINT(_name, _var)			\

	static BATADV_ATTR(_name, _mode, batadv_show_##_name,		\

			   batadv_store_##_name)



static int batadv_store_bool_attr(char *buff, size_t count,

				  struct net_device *net_dev,

				  const char *attr_name, atomic_t *attr,