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-rw-r--r--net/wireless/debugfs.c70
1 files changed, 70 insertions, 0 deletions
diff --git a/net/wireless/debugfs.c b/net/wireless/debugfs.c
new file mode 100644
index 00000000000..3211e0e9fe4
--- /dev/null
+++ b/net/wireless/debugfs.c
@@ -0,0 +1,70 @@
+/*
+ * cfg80211 debugfs
+ *
+ * Copyright 2009 Luis R. Rodriguez <lrodriguez@atheros.com>
+ * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include "core.h"
+#include "debugfs.h"
+
+static int cfg80211_open_file_generic(struct inode *inode, struct file *file)
+{
+ file->private_data = inode->i_private;
+ return 0;
+}
+
+#define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...) \
+static ssize_t name## _read(struct file *file, char __user *userbuf, \
+ size_t count, loff_t *ppos) \
+{ \
+ struct wiphy *wiphy= file->private_data; \
+ char buf[buflen]; \
+ int res; \
+ \
+ res = scnprintf(buf, buflen, fmt "\n", ##value); \
+ return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
+} \
+ \
+static const struct file_operations name## _ops = { \
+ .read = name## _read, \
+ .open = cfg80211_open_file_generic, \
+};
+
+DEBUGFS_READONLY_FILE(rts_threshold, 20, "%d",
+ wiphy->rts_threshold)
+DEBUGFS_READONLY_FILE(fragmentation_threshold, 20, "%d",
+ wiphy->frag_threshold);
+DEBUGFS_READONLY_FILE(short_retry_limit, 20, "%d",
+ wiphy->retry_short)
+DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d",
+ wiphy->retry_long);
+
+#define DEBUGFS_ADD(name) \
+ drv->debugfs.name = debugfs_create_file(#name, S_IRUGO, phyd, \
+ &drv->wiphy, &name## _ops);
+#define DEBUGFS_DEL(name) \
+ debugfs_remove(drv->debugfs.name); \
+ drv->debugfs.name = NULL;
+
+void cfg80211_debugfs_drv_add(struct cfg80211_registered_device *drv)
+{
+ struct dentry *phyd = drv->wiphy.debugfsdir;
+
+ DEBUGFS_ADD(rts_threshold);
+ DEBUGFS_ADD(fragmentation_threshold);
+ DEBUGFS_ADD(short_retry_limit);
+ DEBUGFS_ADD(long_retry_limit);
+}
+
+void cfg80211_debugfs_drv_del(struct cfg80211_registered_device *drv)
+{
+ DEBUGFS_DEL(rts_threshold);
+ DEBUGFS_DEL(fragmentation_threshold);
+ DEBUGFS_DEL(short_retry_limit);
+ DEBUGFS_DEL(long_retry_limit);
+}