LXR linux/net/wireless/sysfs.c

   1/*
   2 * This file provides /sys/class/ieee80211/<wiphy name>/
   3 * and some default attributes.
   4 *
   5 * Copyright 2005-2006  Jiri Benc <jbenc@suse.cz>
   6 * Copyright 2006       Johannes Berg <johannes@sipsolutions.net>
   7 *
   8 * This file is GPLv2 as found in COPYING.
   9 */
  10
  11#include <linux/device.h>
  12#include <linux/module.h>
  13#include <linux/netdevice.h>
  14#include <linux/nl80211.h>
  15#include <linux/rtnetlink.h>
  16#include <net/cfg80211.h>
  17#include "sysfs.h"
  18#include "core.h"
  19
  20static inline struct cfg80211_registered_device *dev_to_rdev(
  21        struct device *dev)
  22{
  23        return container_of(dev, struct cfg80211_registered_device, wiphy.dev);
  24}
  25
  26static ssize_t _show_index(struct device *dev, struct device_attribute *attr,
  27                           char *buf)
  28{
  29        return sprintf(buf, "%d\n", dev_to_rdev(dev)->idx);
  30}
  31
  32static ssize_t _show_permaddr(struct device *dev,
  33                              struct device_attribute *attr,
  34                              char *buf)
  35{
  36        unsigned char *addr = dev_to_rdev(dev)->wiphy.perm_addr;
  37
  38        return sprintf(buf, "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n",
  39                       addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
  40}
  41
  42static struct device_attribute ieee80211_dev_attrs[] = {
  43        __ATTR(index, S_IRUGO, _show_index, NULL),
  44        __ATTR(macaddress, S_IRUGO, _show_permaddr, NULL),
  45        {}
  46};
  47
  48static void wiphy_dev_release(struct device *dev)
  49{
  50        struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
  51
  52        cfg80211_dev_free(rdev);
  53}
  54
  55#ifdef CONFIG_HOTPLUG
  56static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env)
  57{
  58        /* TODO, we probably need stuff here */
  59        return 0;
  60}
  61#endif
  62
  63struct class ieee80211_class = {
  64        .name = "ieee80211",
  65        .owner = THIS_MODULE,
  66        .dev_release = wiphy_dev_release,
  67        .dev_attrs = ieee80211_dev_attrs,
  68#ifdef CONFIG_HOTPLUG
  69        .dev_uevent = wiphy_uevent,
  70#endif
  71};
  72
  73int wiphy_sysfs_init(void)
  74{
  75        return class_register(&ieee80211_class);
  76}
  77
  78void wiphy_sysfs_exit(void)
  79{
  80        class_unregister(&ieee80211_class);
  81}
  82