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Commit 9d853f62 authored by Linus Lüssing's avatar Linus Lüssing Committed by Antonio Quartulli
Browse files

batman-adv: Adding 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 <lindner_marek@yahoo.de>
parent f245c38b

net/batman-adv/bat_sysfs.c

+43 −0
Original line number Diff line number Diff line
@@ -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)