batman-adv: add debugfs structure for information per interface
To show information per interface, add a debugfs hardif structure
similar to the system in sysfs. Hard interface folders will be created
in "$debugfs/batman-adv/". Files are not yet added.
Signed-off-by: Simon Wunderlich <simon@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
diff --git a/net/batman-adv/debugfs.c b/net/batman-adv/debugfs.c
index 0adbcee..2ea3695 100644
--- a/net/batman-adv/debugfs.c
+++ b/net/batman-adv/debugfs.c
@@ -369,6 +369,25 @@
NULL,
};
+#define BATADV_HARDIF_DEBUGINFO(_name, _mode, _open) \
+struct batadv_debuginfo batadv_hardif_debuginfo_##_name = { \
+ .attr = { \
+ .name = __stringify(_name), \
+ .mode = _mode, \
+ }, \
+ .fops = { \
+ .owner = THIS_MODULE, \
+ .open = _open, \
+ .read = seq_read, \
+ .llseek = seq_lseek, \
+ .release = single_release, \
+ }, \
+};
+
+static struct batadv_debuginfo *batadv_hardif_debuginfos[] = {
+ NULL,
+};
+
void batadv_debugfs_init(void)
{
struct batadv_debuginfo **bat_debug;
@@ -396,6 +415,7 @@
return;
err:
debugfs_remove_recursive(batadv_debugfs);
+ batadv_debugfs = NULL;
}
void batadv_debugfs_destroy(void)
@@ -404,6 +424,59 @@
batadv_debugfs = NULL;
}
+/**
+ * batadv_debugfs_add_hardif - creates the base directory for a hard interface
+ * in debugfs.
+ * @hard_iface: hard interface which should be added.
+ */
+int batadv_debugfs_add_hardif(struct batadv_hard_iface *hard_iface)
+{
+ struct batadv_debuginfo **bat_debug;
+ struct dentry *file;
+
+ if (!batadv_debugfs)
+ goto out;
+
+ hard_iface->debug_dir = debugfs_create_dir(hard_iface->net_dev->name,
+ batadv_debugfs);
+ if (!hard_iface->debug_dir)
+ goto out;
+
+ for (bat_debug = batadv_hardif_debuginfos; *bat_debug; ++bat_debug) {
+ file = debugfs_create_file(((*bat_debug)->attr).name,
+ S_IFREG | ((*bat_debug)->attr).mode,
+ hard_iface->debug_dir,
+ hard_iface->net_dev,
+ &(*bat_debug)->fops);
+ if (!file)
+ goto rem_attr;
+ }
+
+ return 0;
+rem_attr:
+ debugfs_remove_recursive(hard_iface->debug_dir);
+ hard_iface->debug_dir = NULL;
+out:
+#ifdef CONFIG_DEBUG_FS
+ return -ENOMEM;
+#else
+ return 0;
+#endif /* CONFIG_DEBUG_FS */
+}
+
+/**
+ * batadv_debugfs_del_hardif - delete the base directory for a hard interface
+ * in debugfs.
+ * @hard_iface: hard interface which is deleted.
+ */
+void batadv_debugfs_del_hardif(struct batadv_hard_iface *hard_iface)
+{
+ if (batadv_debugfs) {
+ debugfs_remove_recursive(hard_iface->debug_dir);
+ hard_iface->debug_dir = NULL;
+ }
+}
+
int batadv_debugfs_add_meshif(struct net_device *dev)
{
struct batadv_priv *bat_priv = netdev_priv(dev);