[B.A.T.M.A.N.] [PATCH 07/10] batman-adv: Adding batman_if specific sysfs wrapper macros for UINT

Linus Lüssing
2010-12-31T15:46:22Z

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 <linus.luessing@ascom.ch>
---
bat_sysfs.c | 43 +++++++++++++++++++++++++++++++++++++++++++
1 files changed, 43 insertions(+), 0 deletions(-)

diff --git a/bat_sysfs.c b/bat_sysfs.c
index cd7bb51..5954389 100644
--- a/bat_sysfs.c
+++ b/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