[WIRELESS] cfg80211: New wireless config infrastructure.

This patch creates the core cfg80211 code along with some sysfs bits.
This is a stripped down version to allow mac80211 to function, but
doesn't include any configuration yet except for creating and removing
virtual interfaces.

This patch includes the nl80211 header file but it only contains the
interface types which the cfg80211 interface for creating virtual
interfaces relies on.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 80 insertions, 0 deletions

diff --git a/net/wireless/sysfs.c b/net/wireless/sysfs.c
new file mode 100644
index 000000000000..3ebae1442963
--- /dev/null
+++ b/net/wireless/sysfs.c
@@ -0,0 +1,80 @@
+/*
+ * This file provides /sys/class/ieee80211/<wiphy name>/
+ * and some default attributes.
+ *
+ * Copyright 2005-2006  Jiri Benc <jbenc@suse.cz>
+ * Copyright 2006       Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This file is GPLv2 as found in COPYING.
+ */
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/nl80211.h>
+#include <linux/rtnetlink.h>
+#include <net/cfg80211.h>
+#include "sysfs.h"
+#include "core.h"
+
+static inline struct cfg80211_registered_device *dev_to_rdev(
+        struct device *dev)
+{
+        return container_of(dev, struct cfg80211_registered_device, wiphy.dev);
+}
+
+static ssize_t _show_index(struct device *dev, struct device_attribute *attr,
+                           char *buf)
+{
+        return sprintf(buf, "%d\n", dev_to_rdev(dev)->idx);
+}
+
+static ssize_t _show_permaddr(struct device *dev,
+                              struct device_attribute *attr,
+                              char *buf)
+{
+        char *addr = dev_to_rdev(dev)->wiphy.perm_addr;
+
+        return sprintf(buf, "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n",
+                       addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
+}
+
+static struct device_attribute ieee80211_dev_attrs[] = {
+        __ATTR(index, S_IRUGO, _show_index, NULL),
+        __ATTR(macaddress, S_IRUGO, _show_permaddr, NULL),
+        {}
+};
+
+static void wiphy_dev_release(struct device *dev)
+{
+        struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
+
+        cfg80211_dev_free(rdev);
+}
+
+static int wiphy_uevent(struct device *dev, char **envp,
+                        int num_envp, char *buf, int size)
+{
+        /* TODO, we probably need stuff here */
+        return 0;
+}
+
+struct class ieee80211_class = {
+        .name = "ieee80211",
+        .owner = THIS_MODULE,
+        .dev_release = wiphy_dev_release,
+        .dev_attrs = ieee80211_dev_attrs,
+#ifdef CONFIG_HOTPLUG
+        .dev_uevent = wiphy_uevent,
+#endif
+};
+
+int wiphy_sysfs_init(void)
+{
+        return class_register(&ieee80211_class);
+}
+
+void wiphy_sysfs_exit(void)
+{
+        class_unregister(&ieee80211_class);
+}