mac80211/cfg80211: move wiphy specific debugfs entries to cfg80211

This moves the cfg80211 specific stuff to new cfg80211 debugfs
entries. Non-mac80211 will also get these entries now. There were
only 4 which we take:

rts_threshold
fragmentation_threshold
short_retry_limit
long_retry_limit

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 70 insertions, 0 deletions

diff --git a/net/wireless/debugfs.c b/net/wireless/debugfs.c
new file mode 100644
index 0000000..3211e0e
--- /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);
+}