/*
   * 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"

  #include "rdev-ops.h"

  
  static inline struct cfg80211_registered_device *dev_to_rdev(
  	struct device *dev)
  {
  	return container_of(dev, struct cfg80211_registered_device, wiphy.dev);
  }

  #define SHOW_FMT(name, fmt, member)					\
  static ssize_t name ## _show(struct device *dev,			\
  			      struct device_attribute *attr,		\
  			      char *buf)				\
  {									\
  	return sprintf(buf, fmt "
  ", dev_to_rdev(dev)->member);	\

  }

  SHOW_FMT(index, "%d", wiphy_idx);

  SHOW_FMT(macaddress, "%pM", wiphy.perm_addr);

  SHOW_FMT(address_mask, "%pM", wiphy.addr_mask);

  static ssize_t name_show(struct device *dev,
  			 struct device_attribute *attr,
  			 char *buf) {
  	struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
  	return sprintf(buf, "%s
  ", dev_name(&wiphy->dev));
  }

  static ssize_t addresses_show(struct device *dev,
  			      struct device_attribute *attr,
  			      char *buf)
  {
  	struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
  	char *start = buf;
  	int i;
  
  	if (!wiphy->addresses)
  		return sprintf(buf, "%pM
  ", wiphy->perm_addr);
  
  	for (i = 0; i < wiphy->n_addresses; i++)
  		buf += sprintf(buf, "%pM
  ", &wiphy->addresses[i].addr);
  
  	return buf - start;
  }

  
  static struct device_attribute ieee80211_dev_attrs[] = {

  	__ATTR_RO(index),
  	__ATTR_RO(macaddress),

  	__ATTR_RO(address_mask),
  	__ATTR_RO(addresses),

  	__ATTR_RO(name),

  	{}
  };
  
  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, struct kobj_uevent_env *env)

  {
  	/* TODO, we probably need stuff here */
  	return 0;
  }

  static void cfg80211_leave_all(struct cfg80211_registered_device *rdev)
  {
  	struct wireless_dev *wdev;
  
  	list_for_each_entry(wdev, &rdev->wdev_list, list)
  		cfg80211_leave(rdev, wdev);
  }

  static int wiphy_suspend(struct device *dev, pm_message_t state)
  {
  	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
  	int ret = 0;

  	rdev->suspend_at = get_seconds();

  	rtnl_lock();
  	if (rdev->wiphy.registered) {
  		if (!rdev->wowlan)
  			cfg80211_leave_all(rdev);
  		if (rdev->ops->suspend)
  			ret = rdev_suspend(rdev, rdev->wowlan);
  		if (ret == 1) {
  			/* Driver refuse to configure wowlan */
  			cfg80211_leave_all(rdev);
  			ret = rdev_suspend(rdev, NULL);
  		}

  	}

  	rtnl_unlock();

  
  	return ret;
  }
  
  static int wiphy_resume(struct device *dev)
  {
  	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
  	int ret = 0;

  	/* Age scan results with time spent in suspend */

  	cfg80211_bss_age(rdev, get_seconds() - rdev->suspend_at);

  	if (rdev->ops->resume) {
  		rtnl_lock();

  		if (rdev->wiphy.registered)

  			ret = rdev_resume(rdev);

  		rtnl_unlock();
  	}
  
  	return ret;
  }

  static const void *wiphy_namespace(struct device *d)
  {
  	struct wiphy *wiphy = container_of(d, struct wiphy, dev);
  
  	return wiphy_net(wiphy);
  }

  struct class ieee80211_class = {
  	.name = "ieee80211",
  	.owner = THIS_MODULE,
  	.dev_release = wiphy_dev_release,
  	.dev_attrs = ieee80211_dev_attrs,

  	.dev_uevent = wiphy_uevent,

  	.suspend = wiphy_suspend,
  	.resume = wiphy_resume,

  	.ns_type = &net_ns_type_operations,
  	.namespace = wiphy_namespace,

  };
  
  int wiphy_sysfs_init(void)
  {
  	return class_register(&ieee80211_class);
  }
  
  void wiphy_sysfs_exit(void)
  {
  	class_unregister(&ieee80211_class);
  }