[B.A.T.M.A.N.] [PATCH 4/5] batman-adv: Adding hard_iface specific sysfs wrapper macros for UINT

Marek Lindner
2012-03-10T22:17:52Z

From: Linus Luessing <linus.luessing@web.de>

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 <linus.luessing@web.de>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
bat_sysfs.c | 43 +++++++++++++++++++++++++++++++++++++++++++
1 files changed, 43 insertions(+), 0 deletions(-)

diff --git a/bat_sysfs.c b/bat_sysfs.c
index 91107fd..35c15e9 100644
--- a/bat_sysfs.c
+++ b/bat_sysfs.c
@@ -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)
--
1.7.9.1