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 batman_if (instead of bat_priv compared to the mesh variant).
Signed-off-by: Linus Lüssing <[email protected]> --- bat_sysfs.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 43 insertions(+), 0 deletions(-) diff --git a/batman-adv/bat_sysfs.c b/batman-adv/bat_sysfs.c index cd7bb51..5954389 100644 --- a/batman-adv/bat_sysfs.c +++ b/batman-adv/bat_sysfs.c @@ -94,6 +94,49 @@ ssize_t show_##_name(struct kobject *kobj, struct attribute *attr, \ static BAT_ATTR(_name, _mode, show_##_name, store_##_name) +#define BAT_ATTR_IF_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 batman_if *batman_if = get_batman_if_by_netdev(net_dev); \ + ssize_t length; \ + \ + if (!batman_if) \ + return 0; \ + \ + length = __store_uint_attr(buff, count, _min, _max, _post_func, \ + attr, &batman_if->_name, net_dev); \ + \ + kref_put(&batman_if->refcount, hardif_free_ref); \ + return length; \ +} + +#define BAT_ATTR_IF_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 batman_if *batman_if = get_batman_if_by_netdev(net_dev); \ + ssize_t length; \ + \ + if (!batman_if) \ + return 0; \ + \ + length = sprintf(buff, "%i\n", atomic_read(&batman_if->_name)); \ + \ + kref_put(&batman_if->refcount, hardif_free_ref); \ + return length; \ +} + +/* Use this, if you are going to set [name] in batman_if to unsigned integer + * values only */ +#define BAT_ATTR_IF_UINT(_name, _mode, _min, _max, _post_func) \ + static BAT_ATTR_IF_STORE_UINT(_name, _min, _max, _post_func) \ + static BAT_ATTR_IF_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, char *attr_name, atomic_t *attr) -- 1.7.1
