From 0744ff8fa8fad7aae669b73fd78f3efe1d8e31ca Mon Sep 17 00:00:00 2001 From: Linus Luessing Date: Sat, 16 Jan 2016 16:40:08 +0800 Subject: [PATCH] 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: Linus Luessing Signed-off-by: Marek Lindner [antonio@open-mesh.com: rename functions and move macros] Signed-off-by: Antonio Quartulli --- net/batman-adv/sysfs.c | 49 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) diff --git a/net/batman-adv/sysfs.c b/net/batman-adv/sysfs.c index 4d70d4413e40..d3f69d5e79d9 100644 --- a/net/batman-adv/sysfs.c +++ b/net/batman-adv/sysfs.c @@ -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,