Initial import of modified Linux 2.6.28 tree

Original upstream URL:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git | branch linux-2.6.28.y

13 files changed, 5613 insertions, 0 deletions

diff --git a/net/wireless/Kconfig b/net/wireless/Kconfig
new file mode 100644
index 0000000..646c712
--- /dev/null
+++ b/net/wireless/Kconfig
@@ -0,0 +1,74 @@
+config CFG80211
+        tristate "Improved wireless configuration API"
+
+config NL80211
+	bool "nl80211 new netlink interface support"
+	depends on CFG80211
+	default y
+	---help---
+	  This option turns on the new netlink interface
+	  (nl80211) support in cfg80211.
+
+	  If =n, drivers using mac80211 will be configured via
+	  wireless extension support provided by that subsystem.
+
+	  If unsure, say Y.
+
+config WIRELESS_OLD_REGULATORY
+	bool "Old wireless static regulatory definitions"
+	default y
+	---help---
+	  This option enables the old static regulatory information
+	  and uses it within the new framework. This is available
+	  temporarily as an option to help prevent immediate issues
+	  due to the switch to the new regulatory framework which
+	  does require a new userspace application which has the
+	  database of regulatory information (CRDA) and another for
+	  setting regulatory domains (iw).
+
+	  For more information see:
+
+	  http://wireless.kernel.org/en/developers/Regulatory/CRDA
+	  http://wireless.kernel.org/en/users/Documentation/iw
+
+	  It is important to note though that if you *do* have CRDA present
+	  and if this option is enabled CRDA *will* be called to update the
+	  regulatory domain (for US and JP only). Support for letting the user
+	  set the regulatory domain through iw is also supported. This option
+	  mainly exists to leave around for a kernel release some old static
+	  regulatory domains that were defined and to keep around the old
+	  ieee80211_regdom module parameter. This is being phased out and you
+	  should stop using them ASAP.
+
+	  Say Y unless you have installed a new userspace application.
+	  Also say Y if have one currently depending on the ieee80211_regdom
+	  module parameter and cannot port it to use the new userspace
+	  interfaces.
+
+config WIRELESS_EXT
+	bool "Wireless extensions"
+	default n
+	---help---
+	  This option enables the legacy wireless extensions
+	  (wireless network interface configuration via ioctls.)
+
+	  Wireless extensions will be replaced by cfg80211 and
+	  will be required only by legacy drivers that implement
+	  wireless extension handlers. This option does not
+	  affect the wireless-extension backward compatibility
+	  code in cfg80211.
+
+	  Say N (if you can) unless you know you need wireless
+	  extensions for external modules.
+
+config WIRELESS_EXT_SYSFS
+	bool "Wireless extensions sysfs files"
+	default y
+	depends on WIRELESS_EXT && SYSFS
+	help
+	  This option enables the deprecated wireless statistics
+	  files in /sys/class/net/*/wireless/. The same information
+	  is available via the ioctls as well.
+
+	  Say Y if you have programs using it, like old versions of
+	  hal.
diff --git a/net/wireless/Makefile b/net/wireless/Makefile
new file mode 100644
index 0000000..b9f943c
--- /dev/null
+++ b/net/wireless/Makefile
@@ -0,0 +1,5 @@
+obj-$(CONFIG_WIRELESS_EXT) += wext.o
+obj-$(CONFIG_CFG80211) += cfg80211.o
+
+cfg80211-y += core.o sysfs.o radiotap.o util.o reg.o
+cfg80211-$(CONFIG_NL80211) += nl80211.o
diff --git a/net/wireless/core.c b/net/wireless/core.c
new file mode 100644
index 0000000..5031db7
--- /dev/null
+++ b/net/wireless/core.c
@@ -0,0 +1,462 @@
+/*
+ * This is the linux wireless configuration interface.
+ *
+ * Copyright 2006-2008		Johannes Berg <johannes@sipsolutions.net>
+ */
+
+#include <linux/if.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/mutex.h>
+#include <linux/list.h>
+#include <linux/nl80211.h>
+#include <linux/debugfs.h>
+#include <linux/notifier.h>
+#include <linux/device.h>
+#include <net/genetlink.h>
+#include <net/cfg80211.h>
+#include <net/wireless.h>
+#include "nl80211.h"
+#include "core.h"
+#include "sysfs.h"
+#include "reg.h"
+
+/* name for sysfs, %d is appended */
+#define PHY_NAME "phy"
+
+MODULE_AUTHOR("Johannes Berg");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("wireless configuration support");
+
+/* RCU might be appropriate here since we usually
+ * only read the list, and that can happen quite
+ * often because we need to do it for each command */
+LIST_HEAD(cfg80211_drv_list);
+DEFINE_MUTEX(cfg80211_drv_mutex);
+
+/* for debugfs */
+static struct dentry *ieee80211_debugfs_dir;
+
+/* requires cfg80211_drv_mutex to be held! */
+static struct cfg80211_registered_device *cfg80211_drv_by_wiphy(int wiphy)
+{
+	struct cfg80211_registered_device *result = NULL, *drv;
+
+	list_for_each_entry(drv, &cfg80211_drv_list, list) {
+		if (drv->idx == wiphy) {
+			result = drv;
+			break;
+		}
+	}
+
+	return result;
+}
+
+/* requires cfg80211_drv_mutex to be held! */
+static struct cfg80211_registered_device *
+__cfg80211_drv_from_info(struct genl_info *info)
+{
+	int ifindex;
+	struct cfg80211_registered_device *bywiphy = NULL, *byifidx = NULL;
+	struct net_device *dev;
+	int err = -EINVAL;
+
+	if (info->attrs[NL80211_ATTR_WIPHY]) {
+		bywiphy = cfg80211_drv_by_wiphy(
+				nla_get_u32(info->attrs[NL80211_ATTR_WIPHY]));
+		err = -ENODEV;
+	}
+
+	if (info->attrs[NL80211_ATTR_IFINDEX]) {
+		ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
+		dev = dev_get_by_index(&init_net, ifindex);
+		if (dev) {
+			if (dev->ieee80211_ptr)
+				byifidx =
+					wiphy_to_dev(dev->ieee80211_ptr->wiphy);
+			dev_put(dev);
+		}
+		err = -ENODEV;
+	}
+
+	if (bywiphy && byifidx) {
+		if (bywiphy != byifidx)
+			return ERR_PTR(-EINVAL);
+		else
+			return bywiphy; /* == byifidx */
+	}
+	if (bywiphy)
+		return bywiphy;
+
+	if (byifidx)
+		return byifidx;
+
+	return ERR_PTR(err);
+}
+
+struct cfg80211_registered_device *
+cfg80211_get_dev_from_info(struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+
+	mutex_lock(&cfg80211_drv_mutex);
+	drv = __cfg80211_drv_from_info(info);
+
+	/* if it is not an error we grab the lock on
+	 * it to assure it won't be going away while
+	 * we operate on it */
+	if (!IS_ERR(drv))
+		mutex_lock(&drv->mtx);
+
+	mutex_unlock(&cfg80211_drv_mutex);
+
+	return drv;
+}
+
+struct cfg80211_registered_device *
+cfg80211_get_dev_from_ifindex(int ifindex)
+{
+	struct cfg80211_registered_device *drv = ERR_PTR(-ENODEV);
+	struct net_device *dev;
+
+	mutex_lock(&cfg80211_drv_mutex);
+	dev = dev_get_by_index(&init_net, ifindex);
+	if (!dev)
+		goto out;
+	if (dev->ieee80211_ptr) {
+		drv = wiphy_to_dev(dev->ieee80211_ptr->wiphy);
+		mutex_lock(&drv->mtx);
+	} else
+		drv = ERR_PTR(-ENODEV);
+	dev_put(dev);
+ out:
+	mutex_unlock(&cfg80211_drv_mutex);
+	return drv;
+}
+
+void cfg80211_put_dev(struct cfg80211_registered_device *drv)
+{
+	BUG_ON(IS_ERR(drv));
+	mutex_unlock(&drv->mtx);
+}
+
+int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
+			char *newname)
+{
+	struct cfg80211_registered_device *drv;
+	int idx, taken = -1, result, digits;
+
+	mutex_lock(&cfg80211_drv_mutex);
+
+	/* prohibit calling the thing phy%d when %d is not its number */
+	sscanf(newname, PHY_NAME "%d%n", &idx, &taken);
+	if (taken == strlen(newname) && idx != rdev->idx) {
+		/* count number of places needed to print idx */
+		digits = 1;
+		while (idx /= 10)
+			digits++;
+		/*
+		 * deny the name if it is phy<idx> where <idx> is printed
+		 * without leading zeroes. taken == strlen(newname) here
+		 */
+		result = -EINVAL;
+		if (taken == strlen(PHY_NAME) + digits)
+			goto out_unlock;
+	}
+
+
+	/* Ignore nop renames */
+	result = 0;
+	if (strcmp(newname, dev_name(&rdev->wiphy.dev)) == 0)
+		goto out_unlock;
+
+	/* Ensure another device does not already have this name. */
+	list_for_each_entry(drv, &cfg80211_drv_list, list) {
+		result = -EINVAL;
+		if (strcmp(newname, dev_name(&drv->wiphy.dev)) == 0)
+			goto out_unlock;
+	}
+
+	/* this will only check for collisions in sysfs
+	 * which is not even always compiled in.
+	 */
+	result = device_rename(&rdev->wiphy.dev, newname);
+	if (result)
+		goto out_unlock;
+
+	if (rdev->wiphy.debugfsdir &&
+	    !debugfs_rename(rdev->wiphy.debugfsdir->d_parent,
+			    rdev->wiphy.debugfsdir,
+			    rdev->wiphy.debugfsdir->d_parent,
+			    newname))
+		printk(KERN_ERR "cfg80211: failed to rename debugfs dir to %s!\n",
+		       newname);
+
+	result = 0;
+out_unlock:
+	mutex_unlock(&cfg80211_drv_mutex);
+	if (result == 0)
+		nl80211_notify_dev_rename(rdev);
+
+	return result;
+}
+
+/* exported functions */
+
+struct wiphy *wiphy_new(struct cfg80211_ops *ops, int sizeof_priv)
+{
+	static int wiphy_counter;
+
+	struct cfg80211_registered_device *drv;
+	int alloc_size;
+
+	WARN_ON(!ops->add_key && ops->del_key);
+	WARN_ON(ops->add_key && !ops->del_key);
+
+	alloc_size = sizeof(*drv) + sizeof_priv;
+
+	drv = kzalloc(alloc_size, GFP_KERNEL);
+	if (!drv)
+		return NULL;
+
+	drv->ops = ops;
+
+	mutex_lock(&cfg80211_drv_mutex);
+
+	drv->idx = wiphy_counter++;
+
+	if (unlikely(drv->idx < 0)) {
+		wiphy_counter--;
+		mutex_unlock(&cfg80211_drv_mutex);
+		/* ugh, wrapped! */
+		kfree(drv);
+		return NULL;
+	}
+
+	mutex_unlock(&cfg80211_drv_mutex);
+
+	/* give it a proper name */
+	snprintf(drv->wiphy.dev.bus_id, BUS_ID_SIZE,
+		 PHY_NAME "%d", drv->idx);
+
+	mutex_init(&drv->mtx);
+	mutex_init(&drv->devlist_mtx);
+	INIT_LIST_HEAD(&drv->netdev_list);
+
+	device_initialize(&drv->wiphy.dev);
+	drv->wiphy.dev.class = &ieee80211_class;
+	drv->wiphy.dev.platform_data = drv;
+
+	return &drv->wiphy;
+}
+EXPORT_SYMBOL(wiphy_new);
+
+int wiphy_register(struct wiphy *wiphy)
+{
+	struct cfg80211_registered_device *drv = wiphy_to_dev(wiphy);
+	int res;
+	enum ieee80211_band band;
+	struct ieee80211_supported_band *sband;
+	bool have_band = false;
+	int i;
+	u16 ifmodes = wiphy->interface_modes;
+
+	/* sanity check ifmodes */
+	WARN_ON(!ifmodes);
+	ifmodes &= ((1 << __NL80211_IFTYPE_AFTER_LAST) - 1) & ~1;
+	if (WARN_ON(ifmodes != wiphy->interface_modes))
+		wiphy->interface_modes = ifmodes;
+
+	/* sanity check supported bands/channels */
+	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+		sband = wiphy->bands[band];
+		if (!sband)
+			continue;
+
+		sband->band = band;
+
+		if (!sband->n_channels || !sband->n_bitrates) {
+			WARN_ON(1);
+			return -EINVAL;
+		}
+
+		for (i = 0; i < sband->n_channels; i++) {
+			sband->channels[i].orig_flags =
+				sband->channels[i].flags;
+			sband->channels[i].orig_mag =
+				sband->channels[i].max_antenna_gain;
+			sband->channels[i].orig_mpwr =
+				sband->channels[i].max_power;
+			sband->channels[i].band = band;
+		}
+
+		have_band = true;
+	}
+
+	if (!have_band) {
+		WARN_ON(1);
+		return -EINVAL;
+	}
+
+	/* check and set up bitrates */
+	ieee80211_set_bitrate_flags(wiphy);
+
+	/* set up regulatory info */
+	mutex_lock(&cfg80211_reg_mutex);
+	wiphy_update_regulatory(wiphy, REGDOM_SET_BY_CORE);
+	mutex_unlock(&cfg80211_reg_mutex);
+
+	mutex_lock(&cfg80211_drv_mutex);
+
+	res = device_add(&drv->wiphy.dev);
+	if (res)
+		goto out_unlock;
+
+	list_add(&drv->list, &cfg80211_drv_list);
+
+	/* add to debugfs */
+	drv->wiphy.debugfsdir =
+		debugfs_create_dir(wiphy_name(&drv->wiphy),
+				   ieee80211_debugfs_dir);
+	if (IS_ERR(drv->wiphy.debugfsdir))
+		drv->wiphy.debugfsdir = NULL;
+
+	res = 0;
+out_unlock:
+	mutex_unlock(&cfg80211_drv_mutex);
+	return res;
+}
+EXPORT_SYMBOL(wiphy_register);
+
+void wiphy_unregister(struct wiphy *wiphy)
+{
+	struct cfg80211_registered_device *drv = wiphy_to_dev(wiphy);
+
+	/* protect the device list */
+	mutex_lock(&cfg80211_drv_mutex);
+
+	BUG_ON(!list_empty(&drv->netdev_list));
+
+	/*
+	 * Try to grab drv->mtx. If a command is still in progress,
+	 * hopefully the driver will refuse it since it's tearing
+	 * down the device already. We wait for this command to complete
+	 * before unlinking the item from the list.
+	 * Note: as codified by the BUG_ON above we cannot get here if
+	 * a virtual interface is still associated. Hence, we can only
+	 * get to lock contention here if userspace issues a command
+	 * that identified the hardware by wiphy index.
+	 */
+	mutex_lock(&drv->mtx);
+	/* unlock again before freeing */
+	mutex_unlock(&drv->mtx);
+
+	list_del(&drv->list);
+	device_del(&drv->wiphy.dev);
+	debugfs_remove(drv->wiphy.debugfsdir);
+
+	mutex_unlock(&cfg80211_drv_mutex);
+}
+EXPORT_SYMBOL(wiphy_unregister);
+
+void cfg80211_dev_free(struct cfg80211_registered_device *drv)
+{
+	mutex_destroy(&drv->mtx);
+	mutex_destroy(&drv->devlist_mtx);
+	kfree(drv);
+}
+
+void wiphy_free(struct wiphy *wiphy)
+{
+	put_device(&wiphy->dev);
+}
+EXPORT_SYMBOL(wiphy_free);
+
+static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
+					 unsigned long state,
+					 void *ndev)
+{
+	struct net_device *dev = ndev;
+	struct cfg80211_registered_device *rdev;
+
+	if (!dev->ieee80211_ptr)
+		return 0;
+
+	rdev = wiphy_to_dev(dev->ieee80211_ptr->wiphy);
+
+	WARN_ON(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_UNSPECIFIED);
+
+	switch (state) {
+	case NETDEV_REGISTER:
+		mutex_lock(&rdev->devlist_mtx);
+		list_add(&dev->ieee80211_ptr->list, &rdev->netdev_list);
+		if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj,
+				      "phy80211")) {
+			printk(KERN_ERR "wireless: failed to add phy80211 "
+				"symlink to netdev!\n");
+		}
+		dev->ieee80211_ptr->netdev = dev;
+		mutex_unlock(&rdev->devlist_mtx);
+		break;
+	case NETDEV_UNREGISTER:
+		mutex_lock(&rdev->devlist_mtx);
+		if (!list_empty(&dev->ieee80211_ptr->list)) {
+			sysfs_remove_link(&dev->dev.kobj, "phy80211");
+			list_del_init(&dev->ieee80211_ptr->list);
+		}
+		mutex_unlock(&rdev->devlist_mtx);
+		break;
+	}
+
+	return 0;
+}
+
+static struct notifier_block cfg80211_netdev_notifier = {
+	.notifier_call = cfg80211_netdev_notifier_call,
+};
+
+static int cfg80211_init(void)
+{
+	int err;
+
+	err = wiphy_sysfs_init();
+	if (err)
+		goto out_fail_sysfs;
+
+	err = register_netdevice_notifier(&cfg80211_netdev_notifier);
+	if (err)
+		goto out_fail_notifier;
+
+	err = nl80211_init();
+	if (err)
+		goto out_fail_nl80211;
+
+	ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL);
+
+	err = regulatory_init();
+	if (err)
+		goto out_fail_reg;
+
+	return 0;
+
+out_fail_reg:
+	debugfs_remove(ieee80211_debugfs_dir);
+out_fail_nl80211:
+	unregister_netdevice_notifier(&cfg80211_netdev_notifier);
+out_fail_notifier:
+	wiphy_sysfs_exit();
+out_fail_sysfs:
+	return err;
+}
+
+subsys_initcall(cfg80211_init);
+
+static void cfg80211_exit(void)
+{
+	debugfs_remove(ieee80211_debugfs_dir);
+	nl80211_exit();
+	unregister_netdevice_notifier(&cfg80211_netdev_notifier);
+	wiphy_sysfs_exit();
+	regulatory_exit();
+}
+module_exit(cfg80211_exit);
diff --git a/net/wireless/core.h b/net/wireless/core.h
new file mode 100644
index 0000000..771cc5c
--- /dev/null
+++ b/net/wireless/core.h
@@ -0,0 +1,84 @@
+/*
+ * Wireless configuration interface internals.
+ *
+ * Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net>
+ */
+#ifndef __NET_WIRELESS_CORE_H
+#define __NET_WIRELESS_CORE_H
+#include <linux/mutex.h>
+#include <linux/list.h>
+#include <linux/netdevice.h>
+#include <net/genetlink.h>
+#include <net/wireless.h>
+#include <net/cfg80211.h>
+
+struct cfg80211_registered_device {
+	struct cfg80211_ops *ops;
+	struct list_head list;
+	/* we hold this mutex during any call so that
+	 * we cannot do multiple calls at once, and also
+	 * to avoid the deregister call to proceed while
+	 * any call is in progress */
+	struct mutex mtx;
+
+	/* wiphy index, internal only */
+	int idx;
+
+	/* associate netdev list */
+	struct mutex devlist_mtx;
+	struct list_head netdev_list;
+
+	/* must be last because of the way we do wiphy_priv(),
+	 * and it should at least be aligned to NETDEV_ALIGN */
+	struct wiphy wiphy __attribute__((__aligned__(NETDEV_ALIGN)));
+};
+
+static inline
+struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy)
+{
+	BUG_ON(!wiphy);
+	return container_of(wiphy, struct cfg80211_registered_device, wiphy);
+}
+
+extern struct mutex cfg80211_drv_mutex;
+extern struct list_head cfg80211_drv_list;
+
+/*
+ * This function returns a pointer to the driver
+ * that the genl_info item that is passed refers to.
+ * If successful, it returns non-NULL and also locks
+ * the driver's mutex!
+ *
+ * This means that you need to call cfg80211_put_dev()
+ * before being allowed to acquire &cfg80211_drv_mutex!
+ *
+ * This is necessary because we need to lock the global
+ * mutex to get an item off the list safely, and then
+ * we lock the drv mutex so it doesn't go away under us.
+ *
+ * We don't want to keep cfg80211_drv_mutex locked
+ * for all the time in order to allow requests on
+ * other interfaces to go through at the same time.
+ *
+ * The result of this can be a PTR_ERR and hence must
+ * be checked with IS_ERR() for errors.
+ */
+extern struct cfg80211_registered_device *
+cfg80211_get_dev_from_info(struct genl_info *info);
+
+/* identical to cfg80211_get_dev_from_info but only operate on ifindex */
+extern struct cfg80211_registered_device *
+cfg80211_get_dev_from_ifindex(int ifindex);
+
+extern void cfg80211_put_dev(struct cfg80211_registered_device *drv);
+
+/* free object */
+extern void cfg80211_dev_free(struct cfg80211_registered_device *drv);
+
+extern int cfg80211_dev_rename(struct cfg80211_registered_device *drv,
+			       char *newname);
+
+void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
+void wiphy_update_regulatory(struct wiphy *wiphy, enum reg_set_by setby);
+
+#endif /* __NET_WIRELESS_CORE_H */
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
new file mode 100644
index 0000000..572793c
--- /dev/null
+++ b/net/wireless/nl80211.c
@@ -0,0 +1,1959 @@
+/*
+ * This is the new netlink-based wireless configuration interface.
+ *
+ * Copyright 2006, 2007	Johannes Berg <johannes@sipsolutions.net>
+ */
+
+#include <linux/if.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/mutex.h>
+#include <linux/list.h>
+#include <linux/if_ether.h>
+#include <linux/ieee80211.h>
+#include <linux/nl80211.h>
+#include <linux/rtnetlink.h>
+#include <linux/netlink.h>
+#include <net/genetlink.h>
+#include <net/cfg80211.h>
+#include "core.h"
+#include "nl80211.h"
+#include "reg.h"
+
+/* the netlink family */
+static struct genl_family nl80211_fam = {
+	.id = GENL_ID_GENERATE,	/* don't bother with a hardcoded ID */
+	.name = "nl80211",	/* have users key off the name instead */
+	.hdrsize = 0,		/* no private header */
+	.version = 1,		/* no particular meaning now */
+	.maxattr = NL80211_ATTR_MAX,
+};
+
+/* internal helper: get drv and dev */
+static int get_drv_dev_by_info_ifindex(struct nlattr **attrs,
+				       struct cfg80211_registered_device **drv,
+				       struct net_device **dev)
+{
+	int ifindex;
+
+	if (!attrs[NL80211_ATTR_IFINDEX])
+		return -EINVAL;
+
+	ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
+	*dev = dev_get_by_index(&init_net, ifindex);
+	if (!*dev)
+		return -ENODEV;
+
+	*drv = cfg80211_get_dev_from_ifindex(ifindex);
+	if (IS_ERR(*drv)) {
+		dev_put(*dev);
+		return PTR_ERR(*drv);
+	}
+
+	return 0;
+}
+
+/* policy for the attributes */
+static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
+	[NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
+	[NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
+				      .len = BUS_ID_SIZE-1 },
+
+	[NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
+	[NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
+	[NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
+
+	[NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
+
+	[NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
+				    .len = WLAN_MAX_KEY_LEN },
+	[NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
+	[NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
+	[NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
+
+	[NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
+	[NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
+	[NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
+				       .len = IEEE80211_MAX_DATA_LEN },
+	[NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
+				       .len = IEEE80211_MAX_DATA_LEN },
+	[NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
+	[NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
+	[NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
+	[NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
+					       .len = NL80211_MAX_SUPP_RATES },
+	[NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
+	[NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
+	[NL80211_ATTR_MNTR_FLAGS] = { .type = NLA_NESTED },
+	[NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
+				.len = IEEE80211_MAX_MESH_ID_LEN },
+	[NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
+
+	[NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
+	[NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
+
+	[NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
+	[NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
+	[NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
+
+	[NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
+					 .len = NL80211_HT_CAPABILITY_LEN },
+};
+
+/* message building helper */
+static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
+				   int flags, u8 cmd)
+{
+	/* since there is no private header just add the generic one */
+	return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
+}
+
+/* netlink command implementations */
+
+static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
+			      struct cfg80211_registered_device *dev)
+{
+	void *hdr;
+	struct nlattr *nl_bands, *nl_band;
+	struct nlattr *nl_freqs, *nl_freq;
+	struct nlattr *nl_rates, *nl_rate;
+	struct nlattr *nl_modes;
+	enum ieee80211_band band;
+	struct ieee80211_channel *chan;
+	struct ieee80211_rate *rate;
+	int i;
+	u16 ifmodes = dev->wiphy.interface_modes;
+
+	hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
+	if (!hdr)
+		return -1;
+
+	NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->idx);
+	NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
+
+	nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES);
+	if (!nl_modes)
+		goto nla_put_failure;
+
+	i = 0;
+	while (ifmodes) {
+		if (ifmodes & 1)
+			NLA_PUT_FLAG(msg, i);
+		ifmodes >>= 1;
+		i++;
+	}
+
+	nla_nest_end(msg, nl_modes);
+
+	nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
+	if (!nl_bands)
+		goto nla_put_failure;
+
+	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+		if (!dev->wiphy.bands[band])
+			continue;
+
+		nl_band = nla_nest_start(msg, band);
+		if (!nl_band)
+			goto nla_put_failure;
+
+		/* add frequencies */
+		nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
+		if (!nl_freqs)
+			goto nla_put_failure;
+
+		for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
+			nl_freq = nla_nest_start(msg, i);
+			if (!nl_freq)
+				goto nla_put_failure;
+
+			chan = &dev->wiphy.bands[band]->channels[i];
+			NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
+				    chan->center_freq);
+
+			if (chan->flags & IEEE80211_CHAN_DISABLED)
+				NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
+			if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
+				NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
+			if (chan->flags & IEEE80211_CHAN_NO_IBSS)
+				NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
+			if (chan->flags & IEEE80211_CHAN_RADAR)
+				NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
+
+			nla_nest_end(msg, nl_freq);
+		}
+
+		nla_nest_end(msg, nl_freqs);
+
+		/* add bitrates */
+		nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
+		if (!nl_rates)
+			goto nla_put_failure;
+
+		for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
+			nl_rate = nla_nest_start(msg, i);
+			if (!nl_rate)
+				goto nla_put_failure;
+
+			rate = &dev->wiphy.bands[band]->bitrates[i];
+			NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
+				    rate->bitrate);
+			if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
+				NLA_PUT_FLAG(msg,
+					NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
+
+			nla_nest_end(msg, nl_rate);
+		}
+
+		nla_nest_end(msg, nl_rates);
+
+		nla_nest_end(msg, nl_band);
+	}
+	nla_nest_end(msg, nl_bands);
+
+	return genlmsg_end(msg, hdr);
+
+ nla_put_failure:
+	genlmsg_cancel(msg, hdr);
+	return -EMSGSIZE;
+}
+
+static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
+{
+	int idx = 0;
+	int start = cb->args[0];
+	struct cfg80211_registered_device *dev;
+
+	mutex_lock(&cfg80211_drv_mutex);
+	list_for_each_entry(dev, &cfg80211_drv_list, list) {
+		if (++idx <= start)
+			continue;
+		if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
+				       cb->nlh->nlmsg_seq, NLM_F_MULTI,
+				       dev) < 0) {
+			idx--;
+			break;
+		}
+	}
+	mutex_unlock(&cfg80211_drv_mutex);
+
+	cb->args[0] = idx;
+
+	return skb->len;
+}
+
+static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
+{
+	struct sk_buff *msg;
+	struct cfg80211_registered_device *dev;
+
+	dev = cfg80211_get_dev_from_info(info);
+	if (IS_ERR(dev))
+		return PTR_ERR(dev);
+
+	msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+	if (!msg)
+		goto out_err;
+
+	if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0)
+		goto out_free;
+
+	cfg80211_put_dev(dev);
+
+	return genlmsg_unicast(msg, info->snd_pid);
+
+ out_free:
+	nlmsg_free(msg);
+ out_err:
+	cfg80211_put_dev(dev);
+	return -ENOBUFS;
+}
+
+static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *rdev;
+	int result;
+
+	if (!info->attrs[NL80211_ATTR_WIPHY_NAME])
+		return -EINVAL;
+
+	rdev = cfg80211_get_dev_from_info(info);
+	if (IS_ERR(rdev))
+		return PTR_ERR(rdev);
+
+	result = cfg80211_dev_rename(rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
+
+	cfg80211_put_dev(rdev);
+	return result;
+}
+
+
+static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
+			      struct net_device *dev)
+{
+	void *hdr;
+
+	hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
+	if (!hdr)
+		return -1;
+
+	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
+	NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
+	NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
+	return genlmsg_end(msg, hdr);
+
+ nla_put_failure:
+	genlmsg_cancel(msg, hdr);
+	return -EMSGSIZE;
+}
+
+static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
+{
+	int wp_idx = 0;
+	int if_idx = 0;
+	int wp_start = cb->args[0];
+	int if_start = cb->args[1];
+	struct cfg80211_registered_device *dev;
+	struct wireless_dev *wdev;
+
+	mutex_lock(&cfg80211_drv_mutex);
+	list_for_each_entry(dev, &cfg80211_drv_list, list) {
+		if (wp_idx < wp_start) {
+			wp_idx++;
+			continue;
+		}
+		if_idx = 0;
+
+		mutex_lock(&dev->devlist_mtx);
+		list_for_each_entry(wdev, &dev->netdev_list, list) {
+			if (if_idx < if_start) {
+				if_idx++;
+				continue;
+			}
+			if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
+					       cb->nlh->nlmsg_seq, NLM_F_MULTI,
+					       wdev->netdev) < 0) {
+				mutex_unlock(&dev->devlist_mtx);
+				goto out;
+			}
+			if_idx++;
+		}
+		mutex_unlock(&dev->devlist_mtx);
+
+		wp_idx++;
+	}
+ out:
+	mutex_unlock(&cfg80211_drv_mutex);
+
+	cb->args[0] = wp_idx;
+	cb->args[1] = if_idx;
+
+	return skb->len;
+}
+
+static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
+{
+	struct sk_buff *msg;
+	struct cfg80211_registered_device *dev;
+	struct net_device *netdev;
+	int err;
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &dev, &netdev);
+	if (err)
+		return err;
+
+	msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+	if (!msg)
+		goto out_err;
+
+	if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0, netdev) < 0)
+		goto out_free;
+
+	dev_put(netdev);
+	cfg80211_put_dev(dev);
+
+	return genlmsg_unicast(msg, info->snd_pid);
+
+ out_free:
+	nlmsg_free(msg);
+ out_err:
+	dev_put(netdev);
+	cfg80211_put_dev(dev);
+	return -ENOBUFS;
+}
+
+static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
+	[NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
+	[NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
+	[NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
+	[NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
+	[NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
+};
+
+static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
+{
+	struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
+	int flag;
+
+	*mntrflags = 0;
+
+	if (!nla)
+		return -EINVAL;
+
+	if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
+			     nla, mntr_flags_policy))
+		return -EINVAL;
+
+	for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
+		if (flags[flag])
+			*mntrflags |= (1<<flag);
+
+	return 0;
+}
+
+static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	struct vif_params params;
+	int err, ifindex;
+	enum nl80211_iftype type;
+	struct net_device *dev;
+	u32 _flags, *flags = NULL;
+
+	memset(&params, 0, sizeof(params));
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		return err;
+	ifindex = dev->ifindex;
+	type = dev->ieee80211_ptr->iftype;
+	dev_put(dev);
+
+	err = -EINVAL;
+	if (info->attrs[NL80211_ATTR_IFTYPE]) {
+		type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
+		if (type > NL80211_IFTYPE_MAX)
+			goto unlock;
+	}
+
+	if (!drv->ops->change_virtual_intf ||
+	    !(drv->wiphy.interface_modes & (1 << type))) {
+		err = -EOPNOTSUPP;
+		goto unlock;
+	}
+
+	if (info->attrs[NL80211_ATTR_MESH_ID]) {
+		if (type != NL80211_IFTYPE_MESH_POINT) {
+			err = -EINVAL;
+			goto unlock;
+		}
+		params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
+		params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
+	}
+
+	if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
+		if (type != NL80211_IFTYPE_MONITOR) {
+			err = -EINVAL;
+			goto unlock;
+		}
+		err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
+					  &_flags);
+		if (!err)
+			flags = &_flags;
+	}
+	rtnl_lock();
+	err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex,
+					    type, flags, &params);
+
+	dev = __dev_get_by_index(&init_net, ifindex);
+	WARN_ON(!dev || (!err && dev->ieee80211_ptr->iftype != type));
+
+	rtnl_unlock();
+
+ unlock:
+	cfg80211_put_dev(drv);
+	return err;
+}
+
+static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	struct vif_params params;
+	int err;
+	enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
+	u32 flags;
+
+	memset(&params, 0, sizeof(params));
+
+	if (!info->attrs[NL80211_ATTR_IFNAME])
+		return -EINVAL;
+
+	if (info->attrs[NL80211_ATTR_IFTYPE]) {
+		type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
+		if (type > NL80211_IFTYPE_MAX)
+			return -EINVAL;
+	}
+
+	drv = cfg80211_get_dev_from_info(info);
+	if (IS_ERR(drv))
+		return PTR_ERR(drv);
+
+	if (!drv->ops->add_virtual_intf ||
+	    !(drv->wiphy.interface_modes & (1 << type))) {
+		err = -EOPNOTSUPP;
+		goto unlock;
+	}
+
+	if (type == NL80211_IFTYPE_MESH_POINT &&
+	    info->attrs[NL80211_ATTR_MESH_ID]) {
+		params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
+		params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
+	}
+
+	rtnl_lock();
+	err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
+				  info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
+				  &flags);
+	err = drv->ops->add_virtual_intf(&drv->wiphy,
+		nla_data(info->attrs[NL80211_ATTR_IFNAME]),
+		type, err ? NULL : &flags, &params);
+	rtnl_unlock();
+
+
+ unlock:
+	cfg80211_put_dev(drv);
+	return err;
+}
+
+static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	int ifindex, err;
+	struct net_device *dev;
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		return err;
+	ifindex = dev->ifindex;
+	dev_put(dev);
+
+	if (!drv->ops->del_virtual_intf) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	rtnl_lock();
+	err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex);
+	rtnl_unlock();
+
+ out:
+	cfg80211_put_dev(drv);
+	return err;
+}
+
+struct get_key_cookie {
+	struct sk_buff *msg;
+	int error;
+};
+
+static void get_key_callback(void *c, struct key_params *params)
+{
+	struct get_key_cookie *cookie = c;
+
+	if (params->key)
+		NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
+			params->key_len, params->key);
+
+	if (params->seq)
+		NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
+			params->seq_len, params->seq);
+
+	if (params->cipher)
+		NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
+			    params->cipher);
+
+	return;
+ nla_put_failure:
+	cookie->error = 1;
+}
+
+static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	int err;
+	struct net_device *dev;
+	u8 key_idx = 0;
+	u8 *mac_addr = NULL;
+	struct get_key_cookie cookie = {
+		.error = 0,
+	};
+	void *hdr;
+	struct sk_buff *msg;
+
+	if (info->attrs[NL80211_ATTR_KEY_IDX])
+		key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
+
+	if (key_idx > 3)
+		return -EINVAL;
+
+	if (info->attrs[NL80211_ATTR_MAC])
+		mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		return err;
+
+	if (!drv->ops->get_key) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+	if (!msg) {
+		err = -ENOMEM;
+		goto out;
+	}
+
+	hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
+			     NL80211_CMD_NEW_KEY);
+
+	if (IS_ERR(hdr)) {
+		err = PTR_ERR(hdr);
+		goto out;
+	}
+
+	cookie.msg = msg;
+
+	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
+	NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
+	if (mac_addr)
+		NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
+
+	rtnl_lock();
+	err = drv->ops->get_key(&drv->wiphy, dev, key_idx, mac_addr,
+				&cookie, get_key_callback);
+	rtnl_unlock();
+
+	if (err)
+		goto out;
+
+	if (cookie.error)
+		goto nla_put_failure;
+
+	genlmsg_end(msg, hdr);
+	err = genlmsg_unicast(msg, info->snd_pid);
+	goto out;
+
+ nla_put_failure:
+	err = -ENOBUFS;
+	nlmsg_free(msg);
+ out:
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+	return err;
+}
+
+static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	int err;
+	struct net_device *dev;
+	u8 key_idx;
+
+	if (!info->attrs[NL80211_ATTR_KEY_IDX])
+		return -EINVAL;
+
+	key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
+
+	if (key_idx > 3)
+		return -EINVAL;
+
+	/* currently only support setting default key */
+	if (!info->attrs[NL80211_ATTR_KEY_DEFAULT])
+		return -EINVAL;
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		return err;
+
+	if (!drv->ops->set_default_key) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	rtnl_lock();
+	err = drv->ops->set_default_key(&drv->wiphy, dev, key_idx);
+	rtnl_unlock();
+
+ out:
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+	return err;
+}
+
+static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	int err;
+	struct net_device *dev;
+	struct key_params params;
+	u8 key_idx = 0;
+	u8 *mac_addr = NULL;
+
+	memset(&params, 0, sizeof(params));
+
+	if (!info->attrs[NL80211_ATTR_KEY_CIPHER])
+		return -EINVAL;
+
+	if (info->attrs[NL80211_ATTR_KEY_DATA]) {
+		params.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
+		params.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
+	}
+
+	if (info->attrs[NL80211_ATTR_KEY_IDX])
+		key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
+
+	params.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
+
+	if (info->attrs[NL80211_ATTR_MAC])
+		mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+	if (key_idx > 3)
+		return -EINVAL;
+
+	/*
+	 * Disallow pairwise keys with non-zero index unless it's WEP
+	 * (because current deployments use pairwise WEP keys with
+	 * non-zero indizes but 802.11i clearly specifies to use zero)
+	 */
+	if (mac_addr && key_idx &&
+	    params.cipher != WLAN_CIPHER_SUITE_WEP40 &&
+	    params.cipher != WLAN_CIPHER_SUITE_WEP104)
+		return -EINVAL;
+
+	/* TODO: add definitions for the lengths to linux/ieee80211.h */
+	switch (params.cipher) {
+	case WLAN_CIPHER_SUITE_WEP40:
+		if (params.key_len != 5)
+			return -EINVAL;
+		break;
+	case WLAN_CIPHER_SUITE_TKIP:
+		if (params.key_len != 32)
+			return -EINVAL;
+		break;
+	case WLAN_CIPHER_SUITE_CCMP:
+		if (params.key_len != 16)
+			return -EINVAL;
+		break;
+	case WLAN_CIPHER_SUITE_WEP104:
+		if (params.key_len != 13)
+			return -EINVAL;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		return err;
+
+	if (!drv->ops->add_key) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	rtnl_lock();
+	err = drv->ops->add_key(&drv->wiphy, dev, key_idx, mac_addr, &params);
+	rtnl_unlock();
+
+ out:
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+	return err;
+}
+
+static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	int err;
+	struct net_device *dev;
+	u8 key_idx = 0;
+	u8 *mac_addr = NULL;
+
+	if (info->attrs[NL80211_ATTR_KEY_IDX])
+		key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
+
+	if (key_idx > 3)
+		return -EINVAL;
+
+	if (info->attrs[NL80211_ATTR_MAC])
+		mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		return err;
+
+	if (!drv->ops->del_key) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	rtnl_lock();
+	err = drv->ops->del_key(&drv->wiphy, dev, key_idx, mac_addr);
+	rtnl_unlock();
+
+ out:
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+	return err;
+}
+
+static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
+{
+        int (*call)(struct wiphy *wiphy, struct net_device *dev,
+		    struct beacon_parameters *info);
+	struct cfg80211_registered_device *drv;
+	int err;
+	struct net_device *dev;
+	struct beacon_parameters params;
+	int haveinfo = 0;
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		return err;
+
+	switch (info->genlhdr->cmd) {
+	case NL80211_CMD_NEW_BEACON:
+		/* these are required for NEW_BEACON */
+		if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
+		    !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
+		    !info->attrs[NL80211_ATTR_BEACON_HEAD]) {
+			err = -EINVAL;
+			goto out;
+		}
+
+		call = drv->ops->add_beacon;
+		break;
+	case NL80211_CMD_SET_BEACON:
+		call = drv->ops->set_beacon;
+		break;
+	default:
+		WARN_ON(1);
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	if (!call) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	memset(&params, 0, sizeof(params));
+
+	if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
+		params.interval =
+		    nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
+		haveinfo = 1;
+	}
+
+	if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
+		params.dtim_period =
+		    nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
+		haveinfo = 1;
+	}
+
+	if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
+		params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
+		params.head_len =
+		    nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
+		haveinfo = 1;
+	}
+
+	if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
+		params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
+		params.tail_len =
+		    nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
+		haveinfo = 1;
+	}
+
+	if (!haveinfo) {
+		err = -EINVAL;
+		goto out;
+	}
+
+	rtnl_lock();
+	err = call(&drv->wiphy, dev, &params);
+	rtnl_unlock();
+
+ out:
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+	return err;
+}
+
+static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	int err;
+	struct net_device *dev;
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		return err;
+
+	if (!drv->ops->del_beacon) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	rtnl_lock();
+	err = drv->ops->del_beacon(&drv->wiphy, dev);
+	rtnl_unlock();
+
+ out:
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+	return err;
+}
+
+static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
+	[NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
+	[NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
+	[NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
+};
+
+static int parse_station_flags(struct nlattr *nla, u32 *staflags)
+{
+	struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
+	int flag;
+
+	*staflags = 0;
+
+	if (!nla)
+		return 0;
+
+	if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
+			     nla, sta_flags_policy))
+		return -EINVAL;
+
+	*staflags = STATION_FLAG_CHANGED;
+
+	for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
+		if (flags[flag])
+			*staflags |= (1<<flag);
+
+	return 0;
+}
+
+static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
+				int flags, struct net_device *dev,
+				u8 *mac_addr, struct station_info *sinfo)
+{
+	void *hdr;
+	struct nlattr *sinfoattr;
+
+	hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
+	if (!hdr)
+		return -1;
+
+	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
+	NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
+
+	sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
+	if (!sinfoattr)
+		goto nla_put_failure;
+	if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
+		NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
+			    sinfo->inactive_time);
+	if (sinfo->filled & STATION_INFO_RX_BYTES)
+		NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
+			    sinfo->rx_bytes);
+	if (sinfo->filled & STATION_INFO_TX_BYTES)
+		NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
+			    sinfo->tx_bytes);
+	if (sinfo->filled & STATION_INFO_LLID)
+		NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
+			    sinfo->llid);
+	if (sinfo->filled & STATION_INFO_PLID)
+		NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
+			    sinfo->plid);
+	if (sinfo->filled & STATION_INFO_PLINK_STATE)
+		NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
+			    sinfo->plink_state);
+
+	nla_nest_end(msg, sinfoattr);
+
+	return genlmsg_end(msg, hdr);
+
+ nla_put_failure:
+	genlmsg_cancel(msg, hdr);
+	return -EMSGSIZE;
+}
+
+static int nl80211_dump_station(struct sk_buff *skb,
+				struct netlink_callback *cb)
+{
+	struct station_info sinfo;
+	struct cfg80211_registered_device *dev;
+	struct net_device *netdev;
+	u8 mac_addr[ETH_ALEN];
+	int ifidx = cb->args[0];
+	int sta_idx = cb->args[1];
+	int err;
+
+	if (!ifidx) {
+		err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
+				  nl80211_fam.attrbuf, nl80211_fam.maxattr,
+				  nl80211_policy);
+		if (err)
+			return err;
+
+		if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
+			return -EINVAL;
+
+		ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
+		if (!ifidx)
+			return -EINVAL;
+	}
+
+	netdev = dev_get_by_index(&init_net, ifidx);
+	if (!netdev)
+		return -ENODEV;
+
+	dev = cfg80211_get_dev_from_ifindex(ifidx);
+	if (IS_ERR(dev)) {
+		err = PTR_ERR(dev);
+		goto out_put_netdev;
+	}
+
+	if (!dev->ops->dump_station) {
+		err = -ENOSYS;
+		goto out_err;
+	}
+
+	rtnl_lock();
+
+	while (1) {
+		err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
+					     mac_addr, &sinfo);
+		if (err == -ENOENT)
+			break;
+		if (err)
+			goto out_err_rtnl;
+
+		if (nl80211_send_station(skb,
+				NETLINK_CB(cb->skb).pid,
+				cb->nlh->nlmsg_seq, NLM_F_MULTI,
+				netdev, mac_addr,
+				&sinfo) < 0)
+			goto out;
+
+		sta_idx++;
+	}
+
+
+ out:
+	cb->args[1] = sta_idx;
+	err = skb->len;
+ out_err_rtnl:
+	rtnl_unlock();
+ out_err:
+	cfg80211_put_dev(dev);
+ out_put_netdev:
+	dev_put(netdev);
+
+	return err;
+}
+
+static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	int err;
+	struct net_device *dev;
+	struct station_info sinfo;
+	struct sk_buff *msg;
+	u8 *mac_addr = NULL;
+
+	memset(&sinfo, 0, sizeof(sinfo));
+
+	if (!info->attrs[NL80211_ATTR_MAC])
+		return -EINVAL;
+
+	mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		return err;
+
+	if (!drv->ops->get_station) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	rtnl_lock();
+	err = drv->ops->get_station(&drv->wiphy, dev, mac_addr, &sinfo);
+	rtnl_unlock();
+
+	if (err)
+		goto out;
+
+	msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+	if (!msg)
+		goto out;
+
+	if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
+				 dev, mac_addr, &sinfo) < 0)
+		goto out_free;
+
+	err = genlmsg_unicast(msg, info->snd_pid);
+	goto out;
+
+ out_free:
+	nlmsg_free(msg);
+
+ out:
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+	return err;
+}
+
+/*
+ * Get vlan interface making sure it is on the right wiphy.
+ */
+static int get_vlan(struct nlattr *vlanattr,
+		    struct cfg80211_registered_device *rdev,
+		    struct net_device **vlan)
+{
+	*vlan = NULL;
+
+	if (vlanattr) {
+		*vlan = dev_get_by_index(&init_net, nla_get_u32(vlanattr));
+		if (!*vlan)
+			return -ENODEV;
+		if (!(*vlan)->ieee80211_ptr)
+			return -EINVAL;
+		if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
+			return -EINVAL;
+	}
+	return 0;
+}
+
+static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	int err;
+	struct net_device *dev;
+	struct station_parameters params;
+	u8 *mac_addr = NULL;
+
+	memset(&params, 0, sizeof(params));
+
+	params.listen_interval = -1;
+
+	if (info->attrs[NL80211_ATTR_STA_AID])
+		return -EINVAL;
+
+	if (!info->attrs[NL80211_ATTR_MAC])
+		return -EINVAL;
+
+	mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+	if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
+		params.supported_rates =
+			nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
+		params.supported_rates_len =
+			nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
+	}
+
+	if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
+		params.listen_interval =
+		    nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
+
+	if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
+		params.ht_capa =
+			nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
+
+	if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS],
+				&params.station_flags))
+		return -EINVAL;
+
+	if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
+		params.plink_action =
+		    nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		return err;
+
+	err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, &params.vlan);
+	if (err)
+		goto out;
+
+	if (!drv->ops->change_station) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	rtnl_lock();
+	err = drv->ops->change_station(&drv->wiphy, dev, mac_addr, &params);
+	rtnl_unlock();
+
+ out:
+	if (params.vlan)
+		dev_put(params.vlan);
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+	return err;
+}
+
+static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	int err;
+	struct net_device *dev;
+	struct station_parameters params;
+	u8 *mac_addr = NULL;
+
+	memset(&params, 0, sizeof(params));
+
+	if (!info->attrs[NL80211_ATTR_MAC])
+		return -EINVAL;
+
+	if (!info->attrs[NL80211_ATTR_STA_AID])
+		return -EINVAL;
+
+	if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
+		return -EINVAL;
+
+	if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
+		return -EINVAL;
+
+	mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+	params.supported_rates =
+		nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
+	params.supported_rates_len =
+		nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
+	params.listen_interval =
+		nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
+	params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
+	if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
+		params.ht_capa =
+			nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
+
+	if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS],
+				&params.station_flags))
+		return -EINVAL;
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		return err;
+
+	err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, &params.vlan);
+	if (err)
+		goto out;
+
+	if (!drv->ops->add_station) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	rtnl_lock();
+	err = drv->ops->add_station(&drv->wiphy, dev, mac_addr, &params);
+	rtnl_unlock();
+
+ out:
+	if (params.vlan)
+		dev_put(params.vlan);
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+	return err;
+}
+
+static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	int err;
+	struct net_device *dev;
+	u8 *mac_addr = NULL;
+
+	if (info->attrs[NL80211_ATTR_MAC])
+		mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		return err;
+
+	if (!drv->ops->del_station) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	rtnl_lock();
+	err = drv->ops->del_station(&drv->wiphy, dev, mac_addr);
+	rtnl_unlock();
+
+ out:
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+	return err;
+}
+
+static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
+				int flags, struct net_device *dev,
+				u8 *dst, u8 *next_hop,
+				struct mpath_info *pinfo)
+{
+	void *hdr;
+	struct nlattr *pinfoattr;
+
+	hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
+	if (!hdr)
+		return -1;
+
+	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
+	NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
+	NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
+
+	pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
+	if (!pinfoattr)
+		goto nla_put_failure;
+	if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
+		NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
+			    pinfo->frame_qlen);
+	if (pinfo->filled & MPATH_INFO_DSN)
+		NLA_PUT_U32(msg, NL80211_MPATH_INFO_DSN,
+			    pinfo->dsn);
+	if (pinfo->filled & MPATH_INFO_METRIC)
+		NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
+			    pinfo->metric);
+	if (pinfo->filled & MPATH_INFO_EXPTIME)
+		NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
+			    pinfo->exptime);
+	if (pinfo->filled & MPATH_INFO_FLAGS)
+		NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
+			    pinfo->flags);
+	if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
+		NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
+			    pinfo->discovery_timeout);
+	if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
+		NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
+			    pinfo->discovery_retries);
+
+	nla_nest_end(msg, pinfoattr);
+
+	return genlmsg_end(msg, hdr);
+
+ nla_put_failure:
+	genlmsg_cancel(msg, hdr);
+	return -EMSGSIZE;
+}
+
+static int nl80211_dump_mpath(struct sk_buff *skb,
+			      struct netlink_callback *cb)
+{
+	struct mpath_info pinfo;
+	struct cfg80211_registered_device *dev;
+	struct net_device *netdev;
+	u8 dst[ETH_ALEN];
+	u8 next_hop[ETH_ALEN];
+	int ifidx = cb->args[0];
+	int path_idx = cb->args[1];
+	int err;
+
+	if (!ifidx) {
+		err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
+				  nl80211_fam.attrbuf, nl80211_fam.maxattr,
+				  nl80211_policy);
+		if (err)
+			return err;
+
+		if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
+			return -EINVAL;
+
+		ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
+		if (!ifidx)
+			return -EINVAL;
+	}
+
+	netdev = dev_get_by_index(&init_net, ifidx);
+	if (!netdev)
+		return -ENODEV;
+
+	dev = cfg80211_get_dev_from_ifindex(ifidx);
+	if (IS_ERR(dev)) {
+		err = PTR_ERR(dev);
+		goto out_put_netdev;
+	}
+
+	if (!dev->ops->dump_mpath) {
+		err = -ENOSYS;
+		goto out_err;
+	}
+
+	rtnl_lock();
+
+	while (1) {
+		err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
+					   dst, next_hop, &pinfo);
+		if (err == -ENOENT)
+			break;
+		if (err)
+			goto out_err_rtnl;
+
+		if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
+				       cb->nlh->nlmsg_seq, NLM_F_MULTI,
+				       netdev, dst, next_hop,
+				       &pinfo) < 0)
+			goto out;
+
+		path_idx++;
+	}
+
+
+ out:
+	cb->args[1] = path_idx;
+	err = skb->len;
+ out_err_rtnl:
+	rtnl_unlock();
+ out_err:
+	cfg80211_put_dev(dev);
+ out_put_netdev:
+	dev_put(netdev);
+
+	return err;
+}
+
+static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	int err;
+	struct net_device *dev;
+	struct mpath_info pinfo;
+	struct sk_buff *msg;
+	u8 *dst = NULL;
+	u8 next_hop[ETH_ALEN];
+
+	memset(&pinfo, 0, sizeof(pinfo));
+
+	if (!info->attrs[NL80211_ATTR_MAC])
+		return -EINVAL;
+
+	dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		return err;
+
+	if (!drv->ops->get_mpath) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	rtnl_lock();
+	err = drv->ops->get_mpath(&drv->wiphy, dev, dst, next_hop, &pinfo);
+	rtnl_unlock();
+
+	if (err)
+		goto out;
+
+	msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+	if (!msg)
+		goto out;
+
+	if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
+				 dev, dst, next_hop, &pinfo) < 0)
+		goto out_free;
+
+	err = genlmsg_unicast(msg, info->snd_pid);
+	goto out;
+
+ out_free:
+	nlmsg_free(msg);
+
+ out:
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+	return err;
+}
+
+static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	int err;
+	struct net_device *dev;
+	u8 *dst = NULL;
+	u8 *next_hop = NULL;
+
+	if (!info->attrs[NL80211_ATTR_MAC])
+		return -EINVAL;
+
+	if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
+		return -EINVAL;
+
+	dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
+	next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		return err;
+
+	if (!drv->ops->change_mpath) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	rtnl_lock();
+	err = drv->ops->change_mpath(&drv->wiphy, dev, dst, next_hop);
+	rtnl_unlock();
+
+ out:
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+	return err;
+}
+static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	int err;
+	struct net_device *dev;
+	u8 *dst = NULL;
+	u8 *next_hop = NULL;
+
+	if (!info->attrs[NL80211_ATTR_MAC])
+		return -EINVAL;
+
+	if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
+		return -EINVAL;
+
+	dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
+	next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		return err;
+
+	if (!drv->ops->add_mpath) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	rtnl_lock();
+	err = drv->ops->add_mpath(&drv->wiphy, dev, dst, next_hop);
+	rtnl_unlock();
+
+ out:
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+	return err;
+}
+
+static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	int err;
+	struct net_device *dev;
+	u8 *dst = NULL;
+
+	if (info->attrs[NL80211_ATTR_MAC])
+		dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		return err;
+
+	if (!drv->ops->del_mpath) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	rtnl_lock();
+	err = drv->ops->del_mpath(&drv->wiphy, dev, dst);
+	rtnl_unlock();
+
+ out:
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+	return err;
+}
+
+static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	int err;
+	struct net_device *dev;
+	struct bss_parameters params;
+
+	memset(&params, 0, sizeof(params));
+	/* default to not changing parameters */
+	params.use_cts_prot = -1;
+	params.use_short_preamble = -1;
+	params.use_short_slot_time = -1;
+
+	if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
+		params.use_cts_prot =
+		    nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
+	if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
+		params.use_short_preamble =
+		    nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
+	if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
+		params.use_short_slot_time =
+		    nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		return err;
+
+	if (!drv->ops->change_bss) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	rtnl_lock();
+	err = drv->ops->change_bss(&drv->wiphy, dev, &params);
+	rtnl_unlock();
+
+ out:
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+	return err;
+}
+
+static const struct nla_policy
+	reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
+	[NL80211_ATTR_REG_RULE_FLAGS]		= { .type = NLA_U32 },
+	[NL80211_ATTR_FREQ_RANGE_START]		= { .type = NLA_U32 },
+	[NL80211_ATTR_FREQ_RANGE_END]		= { .type = NLA_U32 },
+	[NL80211_ATTR_FREQ_RANGE_MAX_BW]	= { .type = NLA_U32 },
+	[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]	= { .type = NLA_U32 },
+	[NL80211_ATTR_POWER_RULE_MAX_EIRP]	= { .type = NLA_U32 },
+};
+
+static int parse_reg_rule(struct nlattr *tb[],
+	struct ieee80211_reg_rule *reg_rule)
+{
+	struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
+	struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
+
+	if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
+		return -EINVAL;
+	if (!tb[NL80211_ATTR_FREQ_RANGE_START])
+		return -EINVAL;
+	if (!tb[NL80211_ATTR_FREQ_RANGE_END])
+		return -EINVAL;
+	if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
+		return -EINVAL;
+	if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
+		return -EINVAL;
+
+	reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
+
+	freq_range->start_freq_khz =
+		nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
+	freq_range->end_freq_khz =
+		nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
+	freq_range->max_bandwidth_khz =
+		nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
+
+	power_rule->max_eirp =
+		nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
+
+	if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
+		power_rule->max_antenna_gain =
+			nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
+
+	return 0;
+}
+
+static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
+{
+	int r;
+	char *data = NULL;
+
+	if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
+		return -EINVAL;
+
+	data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
+
+#ifdef CONFIG_WIRELESS_OLD_REGULATORY
+	/* We ignore world regdom requests with the old regdom setup */
+	if (is_world_regdom(data))
+		return -EINVAL;
+#endif
+	mutex_lock(&cfg80211_drv_mutex);
+	r = __regulatory_hint(NULL, REGDOM_SET_BY_USER, data, NULL);
+	mutex_unlock(&cfg80211_drv_mutex);
+	return r;
+}
+
+static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
+{
+	struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
+	struct nlattr *nl_reg_rule;
+	char *alpha2 = NULL;
+	int rem_reg_rules = 0, r = 0;
+	u32 num_rules = 0, rule_idx = 0, size_of_regd;
+	struct ieee80211_regdomain *rd = NULL;
+
+	if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
+		return -EINVAL;
+
+	if (!info->attrs[NL80211_ATTR_REG_RULES])
+		return -EINVAL;
+
+	alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
+
+	nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
+			rem_reg_rules) {
+		num_rules++;
+		if (num_rules > NL80211_MAX_SUPP_REG_RULES)
+			goto bad_reg;
+	}
+
+	if (!reg_is_valid_request(alpha2))
+		return -EINVAL;
+
+	size_of_regd = sizeof(struct ieee80211_regdomain) +
+		(num_rules * sizeof(struct ieee80211_reg_rule));
+
+	rd = kzalloc(size_of_regd, GFP_KERNEL);
+	if (!rd)
+		return -ENOMEM;
+
+	rd->n_reg_rules = num_rules;
+	rd->alpha2[0] = alpha2[0];
+	rd->alpha2[1] = alpha2[1];
+
+	nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
+			rem_reg_rules) {
+		nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
+			nla_data(nl_reg_rule), nla_len(nl_reg_rule),
+			reg_rule_policy);
+		r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
+		if (r)
+			goto bad_reg;
+
+		rule_idx++;
+
+		if (rule_idx > NL80211_MAX_SUPP_REG_RULES)
+			goto bad_reg;
+	}
+
+	BUG_ON(rule_idx != num_rules);
+
+	mutex_lock(&cfg80211_drv_mutex);
+	r = set_regdom(rd);
+	mutex_unlock(&cfg80211_drv_mutex);
+	if (r)
+		goto bad_reg;
+
+	return r;
+
+bad_reg:
+	kfree(rd);
+	return -EINVAL;
+}
+
+static struct genl_ops nl80211_ops[] = {
+	{
+		.cmd = NL80211_CMD_GET_WIPHY,
+		.doit = nl80211_get_wiphy,
+		.dumpit = nl80211_dump_wiphy,
+		.policy = nl80211_policy,
+		/* can be retrieved by unprivileged users */
+	},
+	{
+		.cmd = NL80211_CMD_SET_WIPHY,
+		.doit = nl80211_set_wiphy,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_GET_INTERFACE,
+		.doit = nl80211_get_interface,
+		.dumpit = nl80211_dump_interface,
+		.policy = nl80211_policy,
+		/* can be retrieved by unprivileged users */
+	},
+	{
+		.cmd = NL80211_CMD_SET_INTERFACE,
+		.doit = nl80211_set_interface,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_NEW_INTERFACE,
+		.doit = nl80211_new_interface,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_DEL_INTERFACE,
+		.doit = nl80211_del_interface,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_GET_KEY,
+		.doit = nl80211_get_key,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_SET_KEY,
+		.doit = nl80211_set_key,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_NEW_KEY,
+		.doit = nl80211_new_key,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_DEL_KEY,
+		.doit = nl80211_del_key,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_SET_BEACON,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+		.doit = nl80211_addset_beacon,
+	},
+	{
+		.cmd = NL80211_CMD_NEW_BEACON,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+		.doit = nl80211_addset_beacon,
+	},
+	{
+		.cmd = NL80211_CMD_DEL_BEACON,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+		.doit = nl80211_del_beacon,
+	},
+	{
+		.cmd = NL80211_CMD_GET_STATION,
+		.doit = nl80211_get_station,
+		.dumpit = nl80211_dump_station,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_SET_STATION,
+		.doit = nl80211_set_station,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_NEW_STATION,
+		.doit = nl80211_new_station,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_DEL_STATION,
+		.doit = nl80211_del_station,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_GET_MPATH,
+		.doit = nl80211_get_mpath,
+		.dumpit = nl80211_dump_mpath,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_SET_MPATH,
+		.doit = nl80211_set_mpath,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_NEW_MPATH,
+		.doit = nl80211_new_mpath,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_DEL_MPATH,
+		.doit = nl80211_del_mpath,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_SET_BSS,
+		.doit = nl80211_set_bss,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_SET_REG,
+		.doit = nl80211_set_reg,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_REQ_SET_REG,
+		.doit = nl80211_req_set_reg,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+};
+
+/* multicast groups */
+static struct genl_multicast_group nl80211_config_mcgrp = {
+	.name = "config",
+};
+
+/* notification functions */
+
+void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
+{
+	struct sk_buff *msg;
+
+	msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+	if (!msg)
+		return;
+
+	if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
+		nlmsg_free(msg);
+		return;
+	}
+
+	genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL);
+}
+
+/* initialisation/exit functions */
+
+int nl80211_init(void)
+{
+	int err, i;
+
+	err = genl_register_family(&nl80211_fam);
+	if (err)
+		return err;
+
+	for (i = 0; i < ARRAY_SIZE(nl80211_ops); i++) {
+		err = genl_register_ops(&nl80211_fam, &nl80211_ops[i]);
+		if (err)
+			goto err_out;
+	}
+
+	err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
+	if (err)
+		goto err_out;
+
+	return 0;
+ err_out:
+	genl_unregister_family(&nl80211_fam);
+	return err;
+}
+
+void nl80211_exit(void)
+{
+	genl_unregister_family(&nl80211_fam);
+}
diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h
new file mode 100644
index 0000000..f3ea5c0
--- /dev/null
+++ b/net/wireless/nl80211.h
@@ -0,0 +1,24 @@
+#ifndef __NET_WIRELESS_NL80211_H
+#define __NET_WIRELESS_NL80211_H
+
+#include "core.h"
+
+#ifdef CONFIG_NL80211
+extern int nl80211_init(void);
+extern void nl80211_exit(void);
+extern void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev);
+#else
+static inline int nl80211_init(void)
+{
+	return 0;
+}
+static inline void nl80211_exit(void)
+{
+}
+static inline void nl80211_notify_dev_rename(
+	struct cfg80211_registered_device *rdev)
+{
+}
+#endif /* CONFIG_NL80211 */
+
+#endif /* __NET_WIRELESS_NL80211_H */
diff --git a/net/wireless/radiotap.c b/net/wireless/radiotap.c
new file mode 100644
index 0000000..f591871
--- /dev/null
+++ b/net/wireless/radiotap.c
@@ -0,0 +1,259 @@
+/*
+ * Radiotap parser
+ *
+ * Copyright 2007		Andy Green <andy@warmcat.com>
+ */
+
+#include <net/cfg80211.h>
+#include <net/ieee80211_radiotap.h>
+#include <asm/unaligned.h>
+
+/* function prototypes and related defs are in include/net/cfg80211.h */
+
+/**
+ * ieee80211_radiotap_iterator_init - radiotap parser iterator initialization
+ * @iterator: radiotap_iterator to initialize
+ * @radiotap_header: radiotap header to parse
+ * @max_length: total length we can parse into (eg, whole packet length)
+ *
+ * Returns: 0 or a negative error code if there is a problem.
+ *
+ * This function initializes an opaque iterator struct which can then
+ * be passed to ieee80211_radiotap_iterator_next() to visit every radiotap
+ * argument which is present in the header.  It knows about extended
+ * present headers and handles them.
+ *
+ * How to use:
+ * call __ieee80211_radiotap_iterator_init() to init a semi-opaque iterator
+ * struct ieee80211_radiotap_iterator (no need to init the struct beforehand)
+ * checking for a good 0 return code.  Then loop calling
+ * __ieee80211_radiotap_iterator_next()... it returns either 0,
+ * -ENOENT if there are no more args to parse, or -EINVAL if there is a problem.
+ * The iterator's @this_arg member points to the start of the argument
+ * associated with the current argument index that is present, which can be
+ * found in the iterator's @this_arg_index member.  This arg index corresponds
+ * to the IEEE80211_RADIOTAP_... defines.
+ *
+ * Radiotap header length:
+ * You can find the CPU-endian total radiotap header length in
+ * iterator->max_length after executing ieee80211_radiotap_iterator_init()
+ * successfully.
+ *
+ * Alignment Gotcha:
+ * You must take care when dereferencing iterator.this_arg
+ * for multibyte types... the pointer is not aligned.  Use
+ * get_unaligned((type *)iterator.this_arg) to dereference
+ * iterator.this_arg for type "type" safely on all arches.
+ *
+ * Example code:
+ * See Documentation/networking/radiotap-headers.txt
+ */
+
+int ieee80211_radiotap_iterator_init(
+    struct ieee80211_radiotap_iterator *iterator,
+    struct ieee80211_radiotap_header *radiotap_header,
+    int max_length)
+{
+	/* Linux only supports version 0 radiotap format */
+	if (radiotap_header->it_version)
+		return -EINVAL;
+
+	/* sanity check for allowed length and radiotap length field */
+	if (max_length < get_unaligned_le16(&radiotap_header->it_len))
+		return -EINVAL;
+
+	iterator->rtheader = radiotap_header;
+	iterator->max_length = get_unaligned_le16(&radiotap_header->it_len);
+	iterator->arg_index = 0;
+	iterator->bitmap_shifter = get_unaligned_le32(&radiotap_header->it_present);
+	iterator->arg = (u8 *)radiotap_header + sizeof(*radiotap_header);
+	iterator->this_arg = NULL;
+
+	/* find payload start allowing for extended bitmap(s) */
+
+	if (unlikely(iterator->bitmap_shifter & (1<<IEEE80211_RADIOTAP_EXT))) {
+		while (get_unaligned_le32(iterator->arg) &
+		       (1 << IEEE80211_RADIOTAP_EXT)) {
+			iterator->arg += sizeof(u32);
+
+			/*
+			 * check for insanity where the present bitmaps
+			 * keep claiming to extend up to or even beyond the
+			 * stated radiotap header length
+			 */
+
+			if (((ulong)iterator->arg -
+			     (ulong)iterator->rtheader) > iterator->max_length)
+				return -EINVAL;
+		}
+
+		iterator->arg += sizeof(u32);
+
+		/*
+		 * no need to check again for blowing past stated radiotap
+		 * header length, because ieee80211_radiotap_iterator_next
+		 * checks it before it is dereferenced
+		 */
+	}
+
+	/* we are all initialized happily */
+
+	return 0;
+}
+EXPORT_SYMBOL(ieee80211_radiotap_iterator_init);
+
+
+/**
+ * ieee80211_radiotap_iterator_next - return next radiotap parser iterator arg
+ * @iterator: radiotap_iterator to move to next arg (if any)
+ *
+ * Returns: 0 if there is an argument to handle,
+ * -ENOENT if there are no more args or -EINVAL
+ * if there is something else wrong.
+ *
+ * This function provides the next radiotap arg index (IEEE80211_RADIOTAP_*)
+ * in @this_arg_index and sets @this_arg to point to the
+ * payload for the field.  It takes care of alignment handling and extended
+ * present fields.  @this_arg can be changed by the caller (eg,
+ * incremented to move inside a compound argument like
+ * IEEE80211_RADIOTAP_CHANNEL).  The args pointed to are in
+ * little-endian format whatever the endianess of your CPU.
+ *
+ * Alignment Gotcha:
+ * You must take care when dereferencing iterator.this_arg
+ * for multibyte types... the pointer is not aligned.  Use
+ * get_unaligned((type *)iterator.this_arg) to dereference
+ * iterator.this_arg for type "type" safely on all arches.
+ */
+
+int ieee80211_radiotap_iterator_next(
+    struct ieee80211_radiotap_iterator *iterator)
+{
+
+	/*
+	 * small length lookup table for all radiotap types we heard of
+	 * starting from b0 in the bitmap, so we can walk the payload
+	 * area of the radiotap header
+	 *
+	 * There is a requirement to pad args, so that args
+	 * of a given length must begin at a boundary of that length
+	 * -- but note that compound args are allowed (eg, 2 x u16
+	 * for IEEE80211_RADIOTAP_CHANNEL) so total arg length is not
+	 * a reliable indicator of alignment requirement.
+	 *
+	 * upper nybble: content alignment for arg
+	 * lower nybble: content length for arg
+	 */
+
+	static const u8 rt_sizes[] = {
+		[IEEE80211_RADIOTAP_TSFT] = 0x88,
+		[IEEE80211_RADIOTAP_FLAGS] = 0x11,
+		[IEEE80211_RADIOTAP_RATE] = 0x11,
+		[IEEE80211_RADIOTAP_CHANNEL] = 0x24,
+		[IEEE80211_RADIOTAP_FHSS] = 0x22,
+		[IEEE80211_RADIOTAP_DBM_ANTSIGNAL] = 0x11,
+		[IEEE80211_RADIOTAP_DBM_ANTNOISE] = 0x11,
+		[IEEE80211_RADIOTAP_LOCK_QUALITY] = 0x22,
+		[IEEE80211_RADIOTAP_TX_ATTENUATION] = 0x22,
+		[IEEE80211_RADIOTAP_DB_TX_ATTENUATION] = 0x22,
+		[IEEE80211_RADIOTAP_DBM_TX_POWER] = 0x11,
+		[IEEE80211_RADIOTAP_ANTENNA] = 0x11,
+		[IEEE80211_RADIOTAP_DB_ANTSIGNAL] = 0x11,
+		[IEEE80211_RADIOTAP_DB_ANTNOISE] = 0x11,
+		[IEEE80211_RADIOTAP_RX_FLAGS] = 0x22,
+		[IEEE80211_RADIOTAP_TX_FLAGS] = 0x22,
+		[IEEE80211_RADIOTAP_RTS_RETRIES] = 0x11,
+		[IEEE80211_RADIOTAP_DATA_RETRIES] = 0x11,
+		/*
+		 * add more here as they are defined in
+		 * include/net/ieee80211_radiotap.h
+		 */
+	};
+
+	/*
+	 * for every radiotap entry we can at
+	 * least skip (by knowing the length)...
+	 */
+
+	while (iterator->arg_index < sizeof(rt_sizes)) {
+		int hit = 0;
+		int pad;
+
+		if (!(iterator->bitmap_shifter & 1))
+			goto next_entry; /* arg not present */
+
+		/*
+		 * arg is present, account for alignment padding
+		 *  8-bit args can be at any alignment
+		 * 16-bit args must start on 16-bit boundary
+		 * 32-bit args must start on 32-bit boundary
+		 * 64-bit args must start on 64-bit boundary
+		 *
+		 * note that total arg size can differ from alignment of
+		 * elements inside arg, so we use upper nybble of length
+		 * table to base alignment on
+		 *
+		 * also note: these alignments are ** relative to the
+		 * start of the radiotap header **.  There is no guarantee
+		 * that the radiotap header itself is aligned on any
+		 * kind of boundary.
+		 *
+		 * the above is why get_unaligned() is used to dereference
+		 * multibyte elements from the radiotap area
+		 */
+
+		pad = (((ulong)iterator->arg) -
+			((ulong)iterator->rtheader)) &
+			((rt_sizes[iterator->arg_index] >> 4) - 1);
+
+		if (pad)
+			iterator->arg +=
+				(rt_sizes[iterator->arg_index] >> 4) - pad;
+
+		/*
+		 * this is what we will return to user, but we need to
+		 * move on first so next call has something fresh to test
+		 */
+		iterator->this_arg_index = iterator->arg_index;
+		iterator->this_arg = iterator->arg;
+		hit = 1;
+
+		/* internally move on the size of this arg */
+		iterator->arg += rt_sizes[iterator->arg_index] & 0x0f;
+
+		/*
+		 * check for insanity where we are given a bitmap that
+		 * claims to have more arg content than the length of the
+		 * radiotap section.  We will normally end up equalling this
+		 * max_length on the last arg, never exceeding it.
+		 */
+
+		if (((ulong)iterator->arg - (ulong)iterator->rtheader) >
+		    iterator->max_length)
+			return -EINVAL;
+
+	next_entry:
+		iterator->arg_index++;
+		if (unlikely((iterator->arg_index & 31) == 0)) {
+			/* completed current u32 bitmap */
+			if (iterator->bitmap_shifter & 1) {
+				/* b31 was set, there is more */
+				/* move to next u32 bitmap */
+				iterator->bitmap_shifter =
+				    get_unaligned_le32(iterator->next_bitmap);
+				iterator->next_bitmap++;
+			} else
+				/* no more bitmaps: end */
+				iterator->arg_index = sizeof(rt_sizes);
+		} else /* just try the next bit */
+			iterator->bitmap_shifter >>= 1;
+
+		/* if we found a valid arg earlier, return it now */
+		if (hit)
+			return 0;
+	}
+
+	/* we don't know how to handle any more args, we're done */
+	return -ENOENT;
+}
+EXPORT_SYMBOL(ieee80211_radiotap_iterator_next);
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
new file mode 100644
index 0000000..eb3b1a9
--- /dev/null
+++ b/net/wireless/reg.c
@@ -0,0 +1,872 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ * Copyright 2007	Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2008	Luis R. Rodriguez <lrodriguz@atheros.com>
+ *
+ * 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.
+ */
+
+/**
+ * DOC: Wireless regulatory infrastructure
+ *
+ * The usual implementation is for a driver to read a device EEPROM to
+ * determine which regulatory domain it should be operating under, then
+ * looking up the allowable channels in a driver-local table and finally
+ * registering those channels in the wiphy structure.
+ *
+ * Another set of compliance enforcement is for drivers to use their
+ * own compliance limits which can be stored on the EEPROM. The host
+ * driver or firmware may ensure these are used.
+ *
+ * In addition to all this we provide an extra layer of regulatory
+ * conformance. For drivers which do not have any regulatory
+ * information CRDA provides the complete regulatory solution.
+ * For others it provides a community effort on further restrictions
+ * to enhance compliance.
+ *
+ * Note: When number of rules --> infinity we will not be able to
+ * index on alpha2 any more, instead we'll probably have to
+ * rely on some SHA1 checksum of the regdomain for example.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/random.h>
+#include <linux/nl80211.h>
+#include <linux/platform_device.h>
+#include <net/wireless.h>
+#include <net/cfg80211.h>
+#include "core.h"
+#include "reg.h"
+
+/* wiphy is set if this request's initiator is REGDOM_SET_BY_DRIVER */
+struct regulatory_request {
+	struct list_head list;
+	struct wiphy *wiphy;
+	int granted;
+	enum reg_set_by initiator;
+	char alpha2[2];
+};
+
+static LIST_HEAD(regulatory_requests);
+DEFINE_MUTEX(cfg80211_reg_mutex);
+
+/* To trigger userspace events */
+static struct platform_device *reg_pdev;
+
+/* Keep the ordering from large to small */
+static u32 supported_bandwidths[] = {
+	MHZ_TO_KHZ(40),
+	MHZ_TO_KHZ(20),
+};
+
+static struct list_head regulatory_requests;
+
+/* Central wireless core regulatory domains, we only need two,
+ * the current one and a world regulatory domain in case we have no
+ * information to give us an alpha2 */
+static const struct ieee80211_regdomain *cfg80211_regdomain;
+
+/* We keep a static world regulatory domain in case of the absence of CRDA */
+static const struct ieee80211_regdomain world_regdom = {
+	.n_reg_rules = 1,
+	.alpha2 =  "00",
+	.reg_rules = {
+		REG_RULE(2412-10, 2462+10, 40, 6, 20,
+			NL80211_RRF_PASSIVE_SCAN |
+			NL80211_RRF_NO_IBSS),
+	}
+};
+
+static const struct ieee80211_regdomain *cfg80211_world_regdom =
+	&world_regdom;
+
+#ifdef CONFIG_WIRELESS_OLD_REGULATORY
+static char *ieee80211_regdom = "US";
+module_param(ieee80211_regdom, charp, 0444);
+MODULE_PARM_DESC(ieee80211_regdom, "IEEE 802.11 regulatory domain code");
+
+/* We assume 40 MHz bandwidth for the old regulatory work.
+ * We make emphasis we are using the exact same frequencies
+ * as before */
+
+static const struct ieee80211_regdomain us_regdom = {
+	.n_reg_rules = 6,
+	.alpha2 =  "US",
+	.reg_rules = {
+		/* IEEE 802.11b/g, channels 1..11 */
+		REG_RULE(2412-10, 2462+10, 40, 6, 27, 0),
+		/* IEEE 802.11a, channel 36 */
+		REG_RULE(5180-10, 5180+10, 40, 6, 23, 0),
+		/* IEEE 802.11a, channel 40 */
+		REG_RULE(5200-10, 5200+10, 40, 6, 23, 0),
+		/* IEEE 802.11a, channel 44 */
+		REG_RULE(5220-10, 5220+10, 40, 6, 23, 0),
+		/* IEEE 802.11a, channels 48..64 */
+		REG_RULE(5240-10, 5320+10, 40, 6, 23, 0),
+		/* IEEE 802.11a, channels 149..165, outdoor */
+		REG_RULE(5745-10, 5825+10, 40, 6, 30, 0),
+	}
+};
+
+static const struct ieee80211_regdomain jp_regdom = {
+	.n_reg_rules = 3,
+	.alpha2 =  "JP",
+	.reg_rules = {
+		/* IEEE 802.11b/g, channels 1..14 */
+		REG_RULE(2412-10, 2484+10, 40, 6, 20, 0),
+		/* IEEE 802.11a, channels 34..48 */
+		REG_RULE(5170-10, 5240+10, 40, 6, 20,
+			NL80211_RRF_PASSIVE_SCAN),
+		/* IEEE 802.11a, channels 52..64 */
+		REG_RULE(5260-10, 5320+10, 40, 6, 20,
+			NL80211_RRF_NO_IBSS |
+			NL80211_RRF_DFS),
+	}
+};
+
+static const struct ieee80211_regdomain eu_regdom = {
+	.n_reg_rules = 6,
+	/* This alpha2 is bogus, we leave it here just for stupid
+	 * backward compatibility */
+	.alpha2 =  "EU",
+	.reg_rules = {
+		/* IEEE 802.11b/g, channels 1..13 */
+		REG_RULE(2412-10, 2472+10, 40, 6, 20, 0),
+		/* IEEE 802.11a, channel 36 */
+		REG_RULE(5180-10, 5180+10, 40, 6, 23,
+			NL80211_RRF_PASSIVE_SCAN),
+		/* IEEE 802.11a, channel 40 */
+		REG_RULE(5200-10, 5200+10, 40, 6, 23,
+			NL80211_RRF_PASSIVE_SCAN),
+		/* IEEE 802.11a, channel 44 */
+		REG_RULE(5220-10, 5220+10, 40, 6, 23,
+			NL80211_RRF_PASSIVE_SCAN),
+		/* IEEE 802.11a, channels 48..64 */
+		REG_RULE(5240-10, 5320+10, 40, 6, 20,
+			NL80211_RRF_NO_IBSS |
+			NL80211_RRF_DFS),
+		/* IEEE 802.11a, channels 100..140 */
+		REG_RULE(5500-10, 5700+10, 40, 6, 30,
+			NL80211_RRF_NO_IBSS |
+			NL80211_RRF_DFS),
+	}
+};
+
+static const struct ieee80211_regdomain *static_regdom(char *alpha2)
+{
+	if (alpha2[0] == 'U' && alpha2[1] == 'S')
+		return &us_regdom;
+	if (alpha2[0] == 'J' && alpha2[1] == 'P')
+		return &jp_regdom;
+	if (alpha2[0] == 'E' && alpha2[1] == 'U')
+		return &eu_regdom;
+	/* Default, as per the old rules */
+	return &us_regdom;
+}
+
+static bool is_old_static_regdom(const struct ieee80211_regdomain *rd)
+{
+	if (rd == &us_regdom || rd == &jp_regdom || rd == &eu_regdom)
+		return true;
+	return false;
+}
+#else
+static inline bool is_old_static_regdom(const struct ieee80211_regdomain *rd)
+{
+	return false;
+}
+#endif
+
+static void reset_regdomains(void)
+{
+	/* avoid freeing static information or freeing something twice */
+	if (cfg80211_regdomain == cfg80211_world_regdom)
+		cfg80211_regdomain = NULL;
+	if (cfg80211_world_regdom == &world_regdom)
+		cfg80211_world_regdom = NULL;
+	if (cfg80211_regdomain == &world_regdom)
+		cfg80211_regdomain = NULL;
+	if (is_old_static_regdom(cfg80211_regdomain))
+		cfg80211_regdomain = NULL;
+
+	kfree(cfg80211_regdomain);
+	kfree(cfg80211_world_regdom);
+
+	cfg80211_world_regdom = &world_regdom;
+	cfg80211_regdomain = NULL;
+}
+
+/* Dynamic world regulatory domain requested by the wireless
+ * core upon initialization */
+static void update_world_regdomain(const struct ieee80211_regdomain *rd)
+{
+	BUG_ON(list_empty(&regulatory_requests));
+
+	reset_regdomains();
+
+	cfg80211_world_regdom = rd;
+	cfg80211_regdomain = rd;
+}
+
+bool is_world_regdom(const char *alpha2)
+{
+	if (!alpha2)
+		return false;
+	if (alpha2[0] == '0' && alpha2[1] == '0')
+		return true;
+	return false;
+}
+
+static bool is_alpha2_set(const char *alpha2)
+{
+	if (!alpha2)
+		return false;
+	if (alpha2[0] != 0 && alpha2[1] != 0)
+		return true;
+	return false;
+}
+
+static bool is_alpha_upper(char letter)
+{
+	/* ASCII A - Z */
+	if (letter >= 65 && letter <= 90)
+		return true;
+	return false;
+}
+
+static bool is_unknown_alpha2(const char *alpha2)
+{
+	if (!alpha2)
+		return false;
+	/* Special case where regulatory domain was built by driver
+	 * but a specific alpha2 cannot be determined */
+	if (alpha2[0] == '9' && alpha2[1] == '9')
+		return true;
+	return false;
+}
+
+static bool is_an_alpha2(const char *alpha2)
+{
+	if (!alpha2)
+		return false;
+	if (is_alpha_upper(alpha2[0]) && is_alpha_upper(alpha2[1]))
+		return true;
+	return false;
+}
+
+static bool alpha2_equal(const char *alpha2_x, const char *alpha2_y)
+{
+	if (!alpha2_x || !alpha2_y)
+		return false;
+	if (alpha2_x[0] == alpha2_y[0] &&
+		alpha2_x[1] == alpha2_y[1])
+		return true;
+	return false;
+}
+
+static bool regdom_changed(const char *alpha2)
+{
+	if (!cfg80211_regdomain)
+		return true;
+	if (alpha2_equal(cfg80211_regdomain->alpha2, alpha2))
+		return false;
+	return true;
+}
+
+/* This lets us keep regulatory code which is updated on a regulatory
+ * basis in userspace. */
+static int call_crda(const char *alpha2)
+{
+	char country_env[9 + 2] = "COUNTRY=";
+	char *envp[] = {
+		country_env,
+		NULL
+	};
+
+	if (!is_world_regdom((char *) alpha2))
+		printk(KERN_INFO "cfg80211: Calling CRDA for country: %c%c\n",
+			alpha2[0], alpha2[1]);
+	else
+		printk(KERN_INFO "cfg80211: Calling CRDA to update world "
+			"regulatory domain\n");
+
+	country_env[8] = alpha2[0];
+	country_env[9] = alpha2[1];
+
+	return kobject_uevent_env(&reg_pdev->dev.kobj, KOBJ_CHANGE, envp);
+}
+
+/* This has the logic which determines when a new request
+ * should be ignored. */
+static int ignore_request(struct wiphy *wiphy, enum reg_set_by set_by,
+	char *alpha2, struct ieee80211_regdomain *rd)
+{
+	struct regulatory_request *last_request = NULL;
+
+	/* All initial requests are respected */
+	if (list_empty(&regulatory_requests))
+		return 0;
+
+	last_request = list_first_entry(&regulatory_requests,
+		struct regulatory_request, list);
+
+	switch (set_by) {
+	case REGDOM_SET_BY_INIT:
+		return -EINVAL;
+	case REGDOM_SET_BY_CORE:
+		/* Always respect new wireless core hints, should only
+		 * come in for updating the world regulatory domain at init
+		 * anyway */
+		return 0;
+	case REGDOM_SET_BY_COUNTRY_IE:
+		if (last_request->initiator == set_by) {
+			if (last_request->wiphy != wiphy) {
+				/* Two cards with two APs claiming different
+				 * different Country IE alpha2s!
+				 * You're special!! */
+				if (!alpha2_equal(last_request->alpha2,
+						cfg80211_regdomain->alpha2)) {
+					/* XXX: Deal with conflict, consider
+					 * building a new one out of the
+					 * intersection */
+					WARN_ON(1);
+					return -EOPNOTSUPP;
+				}
+				return -EALREADY;
+			}
+			/* Two consecutive Country IE hints on the same wiphy */
+			if (!alpha2_equal(cfg80211_regdomain->alpha2, alpha2))
+				return 0;
+			return -EALREADY;
+		}
+		if (WARN(!is_alpha2_set(alpha2) || !is_an_alpha2(alpha2),
+				"Invalid Country IE regulatory hint passed "
+				"to the wireless core\n"))
+			return -EINVAL;
+		/* We ignore Country IE hints for now, as we haven't yet
+		 * added the dot11MultiDomainCapabilityEnabled flag
+		 * for wiphys */
+		return 1;
+	case REGDOM_SET_BY_DRIVER:
+		BUG_ON(!wiphy);
+		if (last_request->initiator == set_by) {
+			/* Two separate drivers hinting different things,
+			 * this is possible if you have two devices present
+			 * on a system with different EEPROM regulatory
+			 * readings. XXX: Do intersection, we support only
+			 * the first regulatory hint for now */
+			if (last_request->wiphy != wiphy)
+				return -EALREADY;
+			if (rd)
+				return -EALREADY;
+			/* Driver should not be trying to hint different
+			 * regulatory domains! */
+			BUG_ON(!alpha2_equal(alpha2,
+					cfg80211_regdomain->alpha2));
+			return -EALREADY;
+		}
+		if (last_request->initiator == REGDOM_SET_BY_CORE)
+			return 0;
+		/* XXX: Handle intersection, and add the
+		 * dot11MultiDomainCapabilityEnabled flag to wiphy. For now
+		 * we assume the driver has this set to false, following the
+		 * 802.11d dot11MultiDomainCapabilityEnabled documentation */
+		if (last_request->initiator == REGDOM_SET_BY_COUNTRY_IE)
+			return 0;
+		return 0;
+	case REGDOM_SET_BY_USER:
+		if (last_request->initiator == set_by ||
+				last_request->initiator == REGDOM_SET_BY_CORE)
+			return 0;
+		/* Drivers can use their wiphy's reg_notifier()
+		 * to override any information */
+		if (last_request->initiator == REGDOM_SET_BY_DRIVER)
+			return 0;
+		/* XXX: Handle intersection */
+		if (last_request->initiator == REGDOM_SET_BY_COUNTRY_IE)
+			return -EOPNOTSUPP;
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static bool __reg_is_valid_request(const char *alpha2,
+	struct regulatory_request **request)
+{
+	struct regulatory_request *req;
+	if (list_empty(&regulatory_requests))
+		return false;
+	list_for_each_entry(req, &regulatory_requests, list) {
+		if (alpha2_equal(req->alpha2, alpha2)) {
+			*request = req;
+			return true;
+		}
+	}
+	return false;
+}
+
+/* Used by nl80211 before kmalloc'ing our regulatory domain */
+bool reg_is_valid_request(const char *alpha2)
+{
+	struct regulatory_request *request = NULL;
+	return  __reg_is_valid_request(alpha2, &request);
+}
+
+/* Sanity check on a regulatory rule */
+static bool is_valid_reg_rule(const struct ieee80211_reg_rule *rule)
+{
+	const struct ieee80211_freq_range *freq_range = &rule->freq_range;
+	u32 freq_diff;
+
+	if (freq_range->start_freq_khz == 0 || freq_range->end_freq_khz == 0)
+		return false;
+
+	if (freq_range->start_freq_khz > freq_range->end_freq_khz)
+		return false;
+
+	freq_diff = freq_range->end_freq_khz - freq_range->start_freq_khz;
+
+	if (freq_range->max_bandwidth_khz > freq_diff)
+		return false;
+
+	return true;
+}
+
+static bool is_valid_rd(const struct ieee80211_regdomain *rd)
+{
+	const struct ieee80211_reg_rule *reg_rule = NULL;
+	unsigned int i;
+
+	if (!rd->n_reg_rules)
+		return false;
+
+	for (i = 0; i < rd->n_reg_rules; i++) {
+		reg_rule = &rd->reg_rules[i];
+		if (!is_valid_reg_rule(reg_rule))
+			return false;
+	}
+
+	return true;
+}
+
+/* Returns value in KHz */
+static u32 freq_max_bandwidth(const struct ieee80211_freq_range *freq_range,
+	u32 freq)
+{
+	unsigned int i;
+	for (i = 0; i < ARRAY_SIZE(supported_bandwidths); i++) {
+		u32 start_freq_khz = freq - supported_bandwidths[i]/2;
+		u32 end_freq_khz = freq + supported_bandwidths[i]/2;
+		if (start_freq_khz >= freq_range->start_freq_khz &&
+			end_freq_khz <= freq_range->end_freq_khz)
+			return supported_bandwidths[i];
+	}
+	return 0;
+}
+
+/* XXX: add support for the rest of enum nl80211_reg_rule_flags, we may
+ * want to just have the channel structure use these */
+static u32 map_regdom_flags(u32 rd_flags)
+{
+	u32 channel_flags = 0;
+	if (rd_flags & NL80211_RRF_PASSIVE_SCAN)
+		channel_flags |= IEEE80211_CHAN_PASSIVE_SCAN;
+	if (rd_flags & NL80211_RRF_NO_IBSS)
+		channel_flags |= IEEE80211_CHAN_NO_IBSS;
+	if (rd_flags & NL80211_RRF_DFS)
+		channel_flags |= IEEE80211_CHAN_RADAR;
+	return channel_flags;
+}
+
+/**
+ * freq_reg_info - get regulatory information for the given frequency
+ * @center_freq: Frequency in KHz for which we want regulatory information for
+ * @bandwidth: the bandwidth requirement you have in KHz, if you do not have one
+ * 	you can set this to 0. If this frequency is allowed we then set
+ * 	this value to the maximum allowed bandwidth.
+ * @reg_rule: the regulatory rule which we have for this frequency
+ *
+ * Use this function to get the regulatory rule for a specific frequency.
+ */
+static int freq_reg_info(u32 center_freq, u32 *bandwidth,
+			 const struct ieee80211_reg_rule **reg_rule)
+{
+	int i;
+	u32 max_bandwidth = 0;
+
+	if (!cfg80211_regdomain)
+		return -EINVAL;
+
+	for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
+		const struct ieee80211_reg_rule *rr;
+		const struct ieee80211_freq_range *fr = NULL;
+		const struct ieee80211_power_rule *pr = NULL;
+
+		rr = &cfg80211_regdomain->reg_rules[i];
+		fr = &rr->freq_range;
+		pr = &rr->power_rule;
+		max_bandwidth = freq_max_bandwidth(fr, center_freq);
+		if (max_bandwidth && *bandwidth <= max_bandwidth) {
+			*reg_rule = rr;
+			*bandwidth = max_bandwidth;
+			break;
+		}
+	}
+
+	return !max_bandwidth;
+}
+
+static void handle_channel(struct ieee80211_channel *chan)
+{
+	int r;
+	u32 flags = chan->orig_flags;
+	u32 max_bandwidth = 0;
+	const struct ieee80211_reg_rule *reg_rule = NULL;
+	const struct ieee80211_power_rule *power_rule = NULL;
+
+	r = freq_reg_info(MHZ_TO_KHZ(chan->center_freq),
+		&max_bandwidth, &reg_rule);
+
+	if (r) {
+		flags |= IEEE80211_CHAN_DISABLED;
+		chan->flags = flags;
+		return;
+	}
+
+	power_rule = &reg_rule->power_rule;
+
+	chan->flags = flags | map_regdom_flags(reg_rule->flags);
+	chan->max_antenna_gain = min(chan->orig_mag,
+		(int) MBI_TO_DBI(power_rule->max_antenna_gain));
+	chan->max_bandwidth = KHZ_TO_MHZ(max_bandwidth);
+	if (chan->orig_mpwr)
+		chan->max_power = min(chan->orig_mpwr,
+			(int) MBM_TO_DBM(power_rule->max_eirp));
+	else
+		chan->max_power = (int) MBM_TO_DBM(power_rule->max_eirp);
+}
+
+static void handle_band(struct ieee80211_supported_band *sband)
+{
+	int i;
+
+	for (i = 0; i < sband->n_channels; i++)
+		handle_channel(&sband->channels[i]);
+}
+
+static void update_all_wiphy_regulatory(enum reg_set_by setby)
+{
+	struct cfg80211_registered_device *drv;
+
+	list_for_each_entry(drv, &cfg80211_drv_list, list)
+		wiphy_update_regulatory(&drv->wiphy, setby);
+}
+
+void wiphy_update_regulatory(struct wiphy *wiphy, enum reg_set_by setby)
+{
+	enum ieee80211_band band;
+	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+		if (wiphy->bands[band])
+			handle_band(wiphy->bands[band]);
+		if (wiphy->reg_notifier)
+			wiphy->reg_notifier(wiphy, setby);
+	}
+}
+
+/* Caller must hold &cfg80211_drv_mutex */
+int __regulatory_hint(struct wiphy *wiphy, enum reg_set_by set_by,
+		      const char *alpha2, struct ieee80211_regdomain *rd)
+{
+	struct regulatory_request *request;
+	char *rd_alpha2;
+	int r = 0;
+
+	r = ignore_request(wiphy, set_by, (char *) alpha2, rd);
+	if (r)
+		return r;
+
+	if (rd)
+		rd_alpha2 = rd->alpha2;
+	else
+		rd_alpha2 = (char *) alpha2;
+
+	switch (set_by) {
+	case REGDOM_SET_BY_CORE:
+	case REGDOM_SET_BY_COUNTRY_IE:
+	case REGDOM_SET_BY_DRIVER:
+	case REGDOM_SET_BY_USER:
+		request = kzalloc(sizeof(struct regulatory_request),
+			GFP_KERNEL);
+		if (!request)
+			return -ENOMEM;
+
+		request->alpha2[0] = rd_alpha2[0];
+		request->alpha2[1] = rd_alpha2[1];
+		request->initiator = set_by;
+		request->wiphy = wiphy;
+
+		list_add_tail(&request->list, &regulatory_requests);
+		if (rd)
+			break;
+		r = call_crda(alpha2);
+#ifndef CONFIG_WIRELESS_OLD_REGULATORY
+		if (r)
+			printk(KERN_ERR "cfg80211: Failed calling CRDA\n");
+#endif
+		break;
+	default:
+		r = -ENOTSUPP;
+		break;
+	}
+
+	return r;
+}
+
+/* If rd is not NULL and if this call fails the caller must free it */
+int regulatory_hint(struct wiphy *wiphy, const char *alpha2,
+	struct ieee80211_regdomain *rd)
+{
+	int r;
+	BUG_ON(!rd && !alpha2);
+
+	mutex_lock(&cfg80211_drv_mutex);
+
+	r = __regulatory_hint(wiphy, REGDOM_SET_BY_DRIVER, alpha2, rd);
+	if (r || !rd)
+		goto unlock_and_exit;
+
+	/* If the driver passed a regulatory domain we skipped asking
+	 * userspace for one so we can now go ahead and set it */
+	r = set_regdom(rd);
+
+unlock_and_exit:
+	mutex_unlock(&cfg80211_drv_mutex);
+	return r;
+}
+EXPORT_SYMBOL(regulatory_hint);
+
+
+static void print_rd_rules(const struct ieee80211_regdomain *rd)
+{
+	unsigned int i;
+	const struct ieee80211_reg_rule *reg_rule = NULL;
+	const struct ieee80211_freq_range *freq_range = NULL;
+	const struct ieee80211_power_rule *power_rule = NULL;
+
+	printk(KERN_INFO "\t(start_freq - end_freq @ bandwidth), "
+		"(max_antenna_gain, max_eirp)\n");
+
+	for (i = 0; i < rd->n_reg_rules; i++) {
+		reg_rule = &rd->reg_rules[i];
+		freq_range = &reg_rule->freq_range;
+		power_rule = &reg_rule->power_rule;
+
+		/* There may not be documentation for max antenna gain
+		 * in certain regions */
+		if (power_rule->max_antenna_gain)
+			printk(KERN_INFO "\t(%d KHz - %d KHz @ %d KHz), "
+				"(%d mBi, %d mBm)\n",
+				freq_range->start_freq_khz,
+				freq_range->end_freq_khz,
+				freq_range->max_bandwidth_khz,
+				power_rule->max_antenna_gain,
+				power_rule->max_eirp);
+		else
+			printk(KERN_INFO "\t(%d KHz - %d KHz @ %d KHz), "
+				"(N/A, %d mBm)\n",
+				freq_range->start_freq_khz,
+				freq_range->end_freq_khz,
+				freq_range->max_bandwidth_khz,
+				power_rule->max_eirp);
+	}
+}
+
+static void print_regdomain(const struct ieee80211_regdomain *rd)
+{
+
+	if (is_world_regdom(rd->alpha2))
+		printk(KERN_INFO "cfg80211: World regulatory "
+			"domain updated:\n");
+	else {
+		if (is_unknown_alpha2(rd->alpha2))
+			printk(KERN_INFO "cfg80211: Regulatory domain "
+				"changed to driver built-in settings "
+				"(unknown country)\n");
+		else
+			printk(KERN_INFO "cfg80211: Regulatory domain "
+				"changed to country: %c%c\n",
+				rd->alpha2[0], rd->alpha2[1]);
+	}
+	print_rd_rules(rd);
+}
+
+void print_regdomain_info(const struct ieee80211_regdomain *rd)
+{
+	printk(KERN_INFO "cfg80211: Regulatory domain: %c%c\n",
+		rd->alpha2[0], rd->alpha2[1]);
+	print_rd_rules(rd);
+}
+
+static int __set_regdom(const struct ieee80211_regdomain *rd)
+{
+	struct regulatory_request *request = NULL;
+
+	/* Some basic sanity checks first */
+
+	if (is_world_regdom(rd->alpha2)) {
+		if (WARN_ON(!__reg_is_valid_request(rd->alpha2, &request)))
+			return -EINVAL;
+		update_world_regdomain(rd);
+		return 0;
+	}
+
+	if (!is_alpha2_set(rd->alpha2) && !is_an_alpha2(rd->alpha2) &&
+			!is_unknown_alpha2(rd->alpha2))
+		return -EINVAL;
+
+	if (list_empty(&regulatory_requests))
+		return -EINVAL;
+
+	/* allow overriding the static definitions if CRDA is present */
+	if (!is_old_static_regdom(cfg80211_regdomain) &&
+	    !regdom_changed(rd->alpha2))
+		return -EINVAL;
+
+	/* Now lets set the regulatory domain, update all driver channels
+	 * and finally inform them of what we have done, in case they want
+	 * to review or adjust their own settings based on their own
+	 * internal EEPROM data */
+
+	if (WARN_ON(!__reg_is_valid_request(rd->alpha2, &request)))
+		return -EINVAL;
+
+	reset_regdomains();
+
+	/* Country IE parsing coming soon */
+	switch (request->initiator) {
+	case REGDOM_SET_BY_CORE:
+	case REGDOM_SET_BY_DRIVER:
+	case REGDOM_SET_BY_USER:
+		if (!is_valid_rd(rd)) {
+			printk(KERN_ERR "cfg80211: Invalid "
+				"regulatory domain detected:\n");
+			print_regdomain_info(rd);
+			return -EINVAL;
+		}
+		break;
+	case REGDOM_SET_BY_COUNTRY_IE: /* Not yet */
+		WARN_ON(1);
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	/* Tada! */
+	cfg80211_regdomain = rd;
+	request->granted = 1;
+
+	return 0;
+}
+
+
+/* Use this call to set the current regulatory domain. Conflicts with
+ * multiple drivers can be ironed out later. Caller must've already
+ * kmalloc'd the rd structure. If this calls fails you should kfree()
+ * the passed rd. Caller must hold cfg80211_drv_mutex */
+int set_regdom(const struct ieee80211_regdomain *rd)
+{
+	struct regulatory_request *this_request = NULL, *prev_request = NULL;
+	int r;
+
+	if (!list_empty(&regulatory_requests))
+		prev_request = list_first_entry(&regulatory_requests,
+			struct regulatory_request, list);
+
+	/* Note that this doesn't update the wiphys, this is done below */
+	r = __set_regdom(rd);
+	if (r)
+		return r;
+
+	BUG_ON((!__reg_is_valid_request(rd->alpha2, &this_request)));
+
+	/* The initial standard core update of the world regulatory domain, no
+	 * need to keep that request info around if it didn't fail. */
+	if (is_world_regdom(rd->alpha2) &&
+			this_request->initiator == REGDOM_SET_BY_CORE &&
+			this_request->granted) {
+		list_del(&this_request->list);
+		kfree(this_request);
+		this_request = NULL;
+	}
+
+	/* Remove old requests, we only leave behind the last one */
+	if (prev_request) {
+		list_del(&prev_request->list);
+		kfree(prev_request);
+		prev_request = NULL;
+	}
+
+	/* This would make this whole thing pointless */
+	BUG_ON(rd != cfg80211_regdomain);
+
+	/* update all wiphys now with the new established regulatory domain */
+	update_all_wiphy_regulatory(this_request->initiator);
+
+	print_regdomain(rd);
+
+	return r;
+}
+
+int regulatory_init(void)
+{
+	int err;
+
+	reg_pdev = platform_device_register_simple("regulatory", 0, NULL, 0);
+	if (IS_ERR(reg_pdev))
+		return PTR_ERR(reg_pdev);
+
+#ifdef CONFIG_WIRELESS_OLD_REGULATORY
+	cfg80211_regdomain = static_regdom(ieee80211_regdom);
+
+	printk(KERN_INFO "cfg80211: Using static regulatory domain info\n");
+	print_regdomain_info(cfg80211_regdomain);
+	/* The old code still requests for a new regdomain and if
+	 * you have CRDA you get it updated, otherwise you get
+	 * stuck with the static values. We ignore "EU" code as
+	 * that is not a valid ISO / IEC 3166 alpha2 */
+	if (ieee80211_regdom[0] != 'E' && ieee80211_regdom[1] != 'U')
+		err = __regulatory_hint(NULL, REGDOM_SET_BY_CORE,
+					ieee80211_regdom, NULL);
+#else
+	cfg80211_regdomain = cfg80211_world_regdom;
+
+	err = __regulatory_hint(NULL, REGDOM_SET_BY_CORE, "00", NULL);
+	if (err)
+		printk(KERN_ERR "cfg80211: calling CRDA failed - "
+		       "unable to update world regulatory domain, "
+		       "using static definition\n");
+#endif
+
+	return 0;
+}
+
+void regulatory_exit(void)
+{
+	struct regulatory_request *req, *req_tmp;
+
+	mutex_lock(&cfg80211_drv_mutex);
+
+	reset_regdomains();
+
+	list_for_each_entry_safe(req, req_tmp, &regulatory_requests, list) {
+		list_del(&req->list);
+		kfree(req);
+	}
+	platform_device_unregister(reg_pdev);
+
+	mutex_unlock(&cfg80211_drv_mutex);
+}
diff --git a/net/wireless/reg.h b/net/wireless/reg.h
new file mode 100644
index 0000000..a333628
--- /dev/null
+++ b/net/wireless/reg.h
@@ -0,0 +1,13 @@
+#ifndef __NET_WIRELESS_REG_H
+#define __NET_WIRELESS_REG_H
+
+extern struct mutex cfg80211_reg_mutex;
+bool is_world_regdom(const char *alpha2);
+bool reg_is_valid_request(const char *alpha2);
+
+int regulatory_init(void);
+void regulatory_exit(void);
+
+int set_regdom(const struct ieee80211_regdomain *rd);
+
+#endif  /* __NET_WIRELESS_REG_H */
diff --git a/net/wireless/sysfs.c b/net/wireless/sysfs.c
new file mode 100644
index 0000000..29f820e
--- /dev/null
+++ b/net/wireless/sysfs.c
@@ -0,0 +1,81 @@
+/*
+ * 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)
+{
+	unsigned 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);
+}
+
+#ifdef CONFIG_HOTPLUG
+static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+	/* TODO, we probably need stuff here */
+	return 0;
+}
+#endif
+
+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);
+}
diff --git a/net/wireless/sysfs.h b/net/wireless/sysfs.h
new file mode 100644
index 0000000..65acbeb
--- /dev/null
+++ b/net/wireless/sysfs.h
@@ -0,0 +1,9 @@
+#ifndef __WIRELESS_SYSFS_H
+#define __WIRELESS_SYSFS_H
+
+extern int wiphy_sysfs_init(void);
+extern void wiphy_sysfs_exit(void);
+
+extern struct class ieee80211_class;
+
+#endif /* __WIRELESS_SYSFS_H */
diff --git a/net/wireless/util.c b/net/wireless/util.c
new file mode 100644
index 0000000..f544246
--- /dev/null
+++ b/net/wireless/util.c
@@ -0,0 +1,121 @@
+/*
+ * Wireless utility functions
+ *
+ * Copyright 2007	Johannes Berg <johannes@sipsolutions.net>
+ */
+#include <net/wireless.h>
+#include <asm/bitops.h>
+#include "core.h"
+
+int ieee80211_channel_to_frequency(int chan)
+{
+	if (chan < 14)
+		return 2407 + chan * 5;
+
+	if (chan == 14)
+		return 2484;
+
+	/* FIXME: 802.11j 17.3.8.3.2 */
+	return (chan + 1000) * 5;
+}
+EXPORT_SYMBOL(ieee80211_channel_to_frequency);
+
+int ieee80211_frequency_to_channel(int freq)
+{
+	if (freq == 2484)
+		return 14;
+
+	if (freq < 2484)
+		return (freq - 2407) / 5;
+
+	/* FIXME: 802.11j 17.3.8.3.2 */
+	return freq/5 - 1000;
+}
+EXPORT_SYMBOL(ieee80211_frequency_to_channel);
+
+struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy,
+						  int freq)
+{
+	enum ieee80211_band band;
+	struct ieee80211_supported_band *sband;
+	int i;
+
+	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+		sband = wiphy->bands[band];
+
+		if (!sband)
+			continue;
+
+		for (i = 0; i < sband->n_channels; i++) {
+			if (sband->channels[i].center_freq == freq)
+				return &sband->channels[i];
+		}
+	}
+
+	return NULL;
+}
+EXPORT_SYMBOL(__ieee80211_get_channel);
+
+static void set_mandatory_flags_band(struct ieee80211_supported_band *sband,
+				     enum ieee80211_band band)
+{
+	int i, want;
+
+	switch (band) {
+	case IEEE80211_BAND_5GHZ:
+		want = 3;
+		for (i = 0; i < sband->n_bitrates; i++) {
+			if (sband->bitrates[i].bitrate == 60 ||
+			    sband->bitrates[i].bitrate == 120 ||
+			    sband->bitrates[i].bitrate == 240) {
+				sband->bitrates[i].flags |=
+					IEEE80211_RATE_MANDATORY_A;
+				want--;
+			}
+		}
+		WARN_ON(want);
+		break;
+	case IEEE80211_BAND_2GHZ:
+		want = 7;
+		for (i = 0; i < sband->n_bitrates; i++) {
+			if (sband->bitrates[i].bitrate == 10) {
+				sband->bitrates[i].flags |=
+					IEEE80211_RATE_MANDATORY_B |
+					IEEE80211_RATE_MANDATORY_G;
+				want--;
+			}
+
+			if (sband->bitrates[i].bitrate == 20 ||
+			    sband->bitrates[i].bitrate == 55 ||
+			    sband->bitrates[i].bitrate == 110 ||
+			    sband->bitrates[i].bitrate == 60 ||
+			    sband->bitrates[i].bitrate == 120 ||
+			    sband->bitrates[i].bitrate == 240) {
+				sband->bitrates[i].flags |=
+					IEEE80211_RATE_MANDATORY_G;
+				want--;
+			}
+
+			if (sband->bitrates[i].bitrate != 10 &&
+			    sband->bitrates[i].bitrate != 20 &&
+			    sband->bitrates[i].bitrate != 55 &&
+			    sband->bitrates[i].bitrate != 110)
+				sband->bitrates[i].flags |=
+					IEEE80211_RATE_ERP_G;
+		}
+		WARN_ON(want != 0 && want != 3 && want != 6);
+		break;
+	case IEEE80211_NUM_BANDS:
+		WARN_ON(1);
+		break;
+	}
+}
+
+void ieee80211_set_bitrate_flags(struct wiphy *wiphy)
+{
+	enum ieee80211_band band;
+
+	for (band = 0; band < IEEE80211_NUM_BANDS; band++)
+		if (wiphy->bands[band])
+			set_mandatory_flags_band(wiphy->bands[band], band);
+}
diff --git a/net/wireless/wext.c b/net/wireless/wext.c
new file mode 100644
index 0000000..d98ffb7
--- /dev/null
+++ b/net/wireless/wext.c
@@ -0,0 +1,1650 @@
+/*
+ * This file implement the Wireless Extensions APIs.
+ *
+ * Authors :	Jean Tourrilhes - HPL - <jt@hpl.hp.com>
+ * Copyright (c) 1997-2007 Jean Tourrilhes, All Rights Reserved.
+ *
+ * (As all part of the Linux kernel, this file is GPL)
+ */
+
+/************************** DOCUMENTATION **************************/
+/*
+ * API definition :
+ * --------------
+ * See <linux/wireless.h> for details of the APIs and the rest.
+ *
+ * History :
+ * -------
+ *
+ * v1 - 5.12.01 - Jean II
+ *	o Created this file.
+ *
+ * v2 - 13.12.01 - Jean II
+ *	o Move /proc/net/wireless stuff from net/core/dev.c to here
+ *	o Make Wireless Extension IOCTLs go through here
+ *	o Added iw_handler handling ;-)
+ *	o Added standard ioctl description
+ *	o Initial dumb commit strategy based on orinoco.c
+ *
+ * v3 - 19.12.01 - Jean II
+ *	o Make sure we don't go out of standard_ioctl[] in ioctl_standard_call
+ *	o Add event dispatcher function
+ *	o Add event description
+ *	o Propagate events as rtnetlink IFLA_WIRELESS option
+ *	o Generate event on selected SET requests
+ *
+ * v4 - 18.04.02 - Jean II
+ *	o Fix stupid off by one in iw_ioctl_description : IW_ESSID_MAX_SIZE + 1
+ *
+ * v5 - 21.06.02 - Jean II
+ *	o Add IW_PRIV_TYPE_ADDR in priv_type_size (+cleanup)
+ *	o Reshuffle IW_HEADER_TYPE_XXX to map IW_PRIV_TYPE_XXX changes
+ *	o Add IWEVCUSTOM for driver specific event/scanning token
+ *	o Turn on WE_STRICT_WRITE by default + kernel warning
+ *	o Fix WE_STRICT_WRITE in ioctl_export_private() (32 => iw_num)
+ *	o Fix off-by-one in test (extra_size <= IFNAMSIZ)
+ *
+ * v6 - 9.01.03 - Jean II
+ *	o Add common spy support : iw_handler_set_spy(), wireless_spy_update()
+ *	o Add enhanced spy support : iw_handler_set_thrspy() and event.
+ *	o Add WIRELESS_EXT version display in /proc/net/wireless
+ *
+ * v6 - 18.06.04 - Jean II
+ *	o Change get_spydata() method for added safety
+ *	o Remove spy #ifdef, they are always on -> cleaner code
+ *	o Allow any size GET request if user specifies length > max
+ *		and if request has IW_DESCR_FLAG_NOMAX flag or is SIOCGIWPRIV
+ *	o Start migrating get_wireless_stats to struct iw_handler_def
+ *	o Add wmb() in iw_handler_set_spy() for non-coherent archs/cpus
+ * Based on patch from Pavel Roskin <proski@gnu.org> :
+ *	o Fix kernel data leak to user space in private handler handling
+ *
+ * v7 - 18.3.05 - Jean II
+ *	o Remove (struct iw_point *)->pointer from events and streams
+ *	o Remove spy_offset from struct iw_handler_def
+ *	o Start deprecating dev->get_wireless_stats, output a warning
+ *	o If IW_QUAL_DBM is set, show dBm values in /proc/net/wireless
+ *	o Don't loose INVALID/DBM flags when clearing UPDATED flags (iwstats)
+ *
+ * v8 - 17.02.06 - Jean II
+ *	o RtNetlink requests support (SET/GET)
+ *
+ * v8b - 03.08.06 - Herbert Xu
+ *	o Fix Wireless Event locking issues.
+ *
+ * v9 - 14.3.06 - Jean II
+ *	o Change length in ESSID and NICK to strlen() instead of strlen()+1
+ *	o Make standard_ioctl_num and standard_event_num unsigned
+ *	o Remove (struct net_device *)->get_wireless_stats()
+ *
+ * v10 - 16.3.07 - Jean II
+ *	o Prevent leaking of kernel space in stream on 64 bits.
+ */
+
+/***************************** INCLUDES *****************************/
+
+#include <linux/module.h>
+#include <linux/types.h>		/* off_t */
+#include <linux/netdevice.h>		/* struct ifreq, dev_get_by_name() */
+#include <linux/proc_fs.h>
+#include <linux/rtnetlink.h>		/* rtnetlink stuff */
+#include <linux/seq_file.h>
+#include <linux/init.h>			/* for __init */
+#include <linux/if_arp.h>		/* ARPHRD_ETHER */
+#include <linux/etherdevice.h>		/* compare_ether_addr */
+#include <linux/interrupt.h>
+#include <net/net_namespace.h>
+
+#include <linux/wireless.h>		/* Pretty obvious */
+#include <net/iw_handler.h>		/* New driver API */
+#include <net/netlink.h>
+#include <net/wext.h>
+
+#include <asm/uaccess.h>		/* copy_to_user() */
+
+/************************* GLOBAL VARIABLES *************************/
+/*
+ * You should not use global variables, because of re-entrancy.
+ * On our case, it's only const, so it's OK...
+ */
+/*
+ * Meta-data about all the standard Wireless Extension request we
+ * know about.
+ */
+static const struct iw_ioctl_description standard_ioctl[] = {
+	[SIOCSIWCOMMIT	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_NULL,
+	},
+	[SIOCGIWNAME	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_CHAR,
+		.flags		= IW_DESCR_FLAG_DUMP,
+	},
+	[SIOCSIWNWID	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_PARAM,
+		.flags		= IW_DESCR_FLAG_EVENT,
+	},
+	[SIOCGIWNWID	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_PARAM,
+		.flags		= IW_DESCR_FLAG_DUMP,
+	},
+	[SIOCSIWFREQ	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_FREQ,
+		.flags		= IW_DESCR_FLAG_EVENT,
+	},
+	[SIOCGIWFREQ	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_FREQ,
+		.flags		= IW_DESCR_FLAG_DUMP,
+	},
+	[SIOCSIWMODE	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_UINT,
+		.flags		= IW_DESCR_FLAG_EVENT,
+	},
+	[SIOCGIWMODE	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_UINT,
+		.flags		= IW_DESCR_FLAG_DUMP,
+	},
+	[SIOCSIWSENS	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_PARAM,
+	},
+	[SIOCGIWSENS	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_PARAM,
+	},
+	[SIOCSIWRANGE	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_NULL,
+	},
+	[SIOCGIWRANGE	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= 1,
+		.max_tokens	= sizeof(struct iw_range),
+		.flags		= IW_DESCR_FLAG_DUMP,
+	},
+	[SIOCSIWPRIV	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_NULL,
+	},
+	[SIOCGIWPRIV	- SIOCIWFIRST] = { /* (handled directly by us) */
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= sizeof(struct iw_priv_args),
+		.max_tokens	= 16,
+		.flags		= IW_DESCR_FLAG_NOMAX,
+	},
+	[SIOCSIWSTATS	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_NULL,
+	},
+	[SIOCGIWSTATS	- SIOCIWFIRST] = { /* (handled directly by us) */
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= 1,
+		.max_tokens	= sizeof(struct iw_statistics),
+		.flags		= IW_DESCR_FLAG_DUMP,
+	},
+	[SIOCSIWSPY	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= sizeof(struct sockaddr),
+		.max_tokens	= IW_MAX_SPY,
+	},
+	[SIOCGIWSPY	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= sizeof(struct sockaddr) +
+				  sizeof(struct iw_quality),
+		.max_tokens	= IW_MAX_SPY,
+	},
+	[SIOCSIWTHRSPY	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= sizeof(struct iw_thrspy),
+		.min_tokens	= 1,
+		.max_tokens	= 1,
+	},
+	[SIOCGIWTHRSPY	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= sizeof(struct iw_thrspy),
+		.min_tokens	= 1,
+		.max_tokens	= 1,
+	},
+	[SIOCSIWAP	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_ADDR,
+	},
+	[SIOCGIWAP	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_ADDR,
+		.flags		= IW_DESCR_FLAG_DUMP,
+	},
+	[SIOCSIWMLME	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= 1,
+		.min_tokens	= sizeof(struct iw_mlme),
+		.max_tokens	= sizeof(struct iw_mlme),
+	},
+	[SIOCGIWAPLIST	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= sizeof(struct sockaddr) +
+				  sizeof(struct iw_quality),
+		.max_tokens	= IW_MAX_AP,
+		.flags		= IW_DESCR_FLAG_NOMAX,
+	},
+	[SIOCSIWSCAN	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= 1,
+		.min_tokens	= 0,
+		.max_tokens	= sizeof(struct iw_scan_req),
+	},
+	[SIOCGIWSCAN	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= 1,
+		.max_tokens	= IW_SCAN_MAX_DATA,
+		.flags		= IW_DESCR_FLAG_NOMAX,
+	},
+	[SIOCSIWESSID	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= 1,
+		.max_tokens	= IW_ESSID_MAX_SIZE,
+		.flags		= IW_DESCR_FLAG_EVENT,
+	},
+	[SIOCGIWESSID	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= 1,
+		.max_tokens	= IW_ESSID_MAX_SIZE,
+		.flags		= IW_DESCR_FLAG_DUMP,
+	},
+	[SIOCSIWNICKN	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= 1,
+		.max_tokens	= IW_ESSID_MAX_SIZE,
+	},
+	[SIOCGIWNICKN	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= 1,
+		.max_tokens	= IW_ESSID_MAX_SIZE,
+	},
+	[SIOCSIWRATE	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_PARAM,
+	},
+	[SIOCGIWRATE	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_PARAM,
+	},
+	[SIOCSIWRTS	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_PARAM,
+	},
+	[SIOCGIWRTS	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_PARAM,
+	},
+	[SIOCSIWFRAG	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_PARAM,
+	},
+	[SIOCGIWFRAG	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_PARAM,
+	},
+	[SIOCSIWTXPOW	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_PARAM,
+	},
+	[SIOCGIWTXPOW	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_PARAM,
+	},
+	[SIOCSIWRETRY	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_PARAM,
+	},
+	[SIOCGIWRETRY	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_PARAM,
+	},
+	[SIOCSIWENCODE	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= 1,
+		.max_tokens	= IW_ENCODING_TOKEN_MAX,
+		.flags		= IW_DESCR_FLAG_EVENT | IW_DESCR_FLAG_RESTRICT,
+	},
+	[SIOCGIWENCODE	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= 1,
+		.max_tokens	= IW_ENCODING_TOKEN_MAX,
+		.flags		= IW_DESCR_FLAG_DUMP | IW_DESCR_FLAG_RESTRICT,
+	},
+	[SIOCSIWPOWER	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_PARAM,
+	},
+	[SIOCGIWPOWER	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_PARAM,
+	},
+	[SIOCSIWGENIE	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= 1,
+		.max_tokens	= IW_GENERIC_IE_MAX,
+	},
+	[SIOCGIWGENIE	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= 1,
+		.max_tokens	= IW_GENERIC_IE_MAX,
+	},
+	[SIOCSIWAUTH	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_PARAM,
+	},
+	[SIOCGIWAUTH	- SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_PARAM,
+	},
+	[SIOCSIWENCODEEXT - SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= 1,
+		.min_tokens	= sizeof(struct iw_encode_ext),
+		.max_tokens	= sizeof(struct iw_encode_ext) +
+				  IW_ENCODING_TOKEN_MAX,
+	},
+	[SIOCGIWENCODEEXT - SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= 1,
+		.min_tokens	= sizeof(struct iw_encode_ext),
+		.max_tokens	= sizeof(struct iw_encode_ext) +
+				  IW_ENCODING_TOKEN_MAX,
+	},
+	[SIOCSIWPMKSA - SIOCIWFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= 1,
+		.min_tokens	= sizeof(struct iw_pmksa),
+		.max_tokens	= sizeof(struct iw_pmksa),
+	},
+};
+static const unsigned standard_ioctl_num = ARRAY_SIZE(standard_ioctl);
+
+/*
+ * Meta-data about all the additional standard Wireless Extension events
+ * we know about.
+ */
+static const struct iw_ioctl_description standard_event[] = {
+	[IWEVTXDROP	- IWEVFIRST] = {
+		.header_type	= IW_HEADER_TYPE_ADDR,
+	},
+	[IWEVQUAL	- IWEVFIRST] = {
+		.header_type	= IW_HEADER_TYPE_QUAL,
+	},
+	[IWEVCUSTOM	- IWEVFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= 1,
+		.max_tokens	= IW_CUSTOM_MAX,
+	},
+	[IWEVREGISTERED	- IWEVFIRST] = {
+		.header_type	= IW_HEADER_TYPE_ADDR,
+	},
+	[IWEVEXPIRED	- IWEVFIRST] = {
+		.header_type	= IW_HEADER_TYPE_ADDR,
+	},
+	[IWEVGENIE	- IWEVFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= 1,
+		.max_tokens	= IW_GENERIC_IE_MAX,
+	},
+	[IWEVMICHAELMICFAILURE	- IWEVFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= 1,
+		.max_tokens	= sizeof(struct iw_michaelmicfailure),
+	},
+	[IWEVASSOCREQIE	- IWEVFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= 1,
+		.max_tokens	= IW_GENERIC_IE_MAX,
+	},
+	[IWEVASSOCRESPIE	- IWEVFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= 1,
+		.max_tokens	= IW_GENERIC_IE_MAX,
+	},
+	[IWEVPMKIDCAND	- IWEVFIRST] = {
+		.header_type	= IW_HEADER_TYPE_POINT,
+		.token_size	= 1,
+		.max_tokens	= sizeof(struct iw_pmkid_cand),
+	},
+};
+static const unsigned standard_event_num = ARRAY_SIZE(standard_event);
+
+/* Size (in bytes) of the various private data types */
+static const char iw_priv_type_size[] = {
+	0,				/* IW_PRIV_TYPE_NONE */
+	1,				/* IW_PRIV_TYPE_BYTE */
+	1,				/* IW_PRIV_TYPE_CHAR */
+	0,				/* Not defined */
+	sizeof(__u32),			/* IW_PRIV_TYPE_INT */
+	sizeof(struct iw_freq),		/* IW_PRIV_TYPE_FLOAT */
+	sizeof(struct sockaddr),	/* IW_PRIV_TYPE_ADDR */
+	0,				/* Not defined */
+};
+
+/* Size (in bytes) of various events */
+static const int event_type_size[] = {
+	IW_EV_LCP_LEN,			/* IW_HEADER_TYPE_NULL */
+	0,
+	IW_EV_CHAR_LEN,			/* IW_HEADER_TYPE_CHAR */
+	0,
+	IW_EV_UINT_LEN,			/* IW_HEADER_TYPE_UINT */
+	IW_EV_FREQ_LEN,			/* IW_HEADER_TYPE_FREQ */
+	IW_EV_ADDR_LEN,			/* IW_HEADER_TYPE_ADDR */
+	0,
+	IW_EV_POINT_LEN,		/* Without variable payload */
+	IW_EV_PARAM_LEN,		/* IW_HEADER_TYPE_PARAM */
+	IW_EV_QUAL_LEN,			/* IW_HEADER_TYPE_QUAL */
+};
+
+
+/************************ COMMON SUBROUTINES ************************/
+/*
+ * Stuff that may be used in various place or doesn't fit in one
+ * of the section below.
+ */
+
+/* ---------------------------------------------------------------- */
+/*
+ * Return the driver handler associated with a specific Wireless Extension.
+ */
+static iw_handler get_handler(struct net_device *dev, unsigned int cmd)
+{
+	/* Don't "optimise" the following variable, it will crash */
+	unsigned int	index;		/* *MUST* be unsigned */
+
+	/* Check if we have some wireless handlers defined */
+	if (dev->wireless_handlers == NULL)
+		return NULL;
+
+	/* Try as a standard command */
+	index = cmd - SIOCIWFIRST;
+	if (index < dev->wireless_handlers->num_standard)
+		return dev->wireless_handlers->standard[index];
+
+	/* Try as a private command */
+	index = cmd - SIOCIWFIRSTPRIV;
+	if (index < dev->wireless_handlers->num_private)
+		return dev->wireless_handlers->private[index];
+
+	/* Not found */
+	return NULL;
+}
+
+/* ---------------------------------------------------------------- */
+/*
+ * Get statistics out of the driver
+ */
+static struct iw_statistics *get_wireless_stats(struct net_device *dev)
+{
+	/* New location */
+	if ((dev->wireless_handlers != NULL) &&
+	   (dev->wireless_handlers->get_wireless_stats != NULL))
+		return dev->wireless_handlers->get_wireless_stats(dev);
+
+	/* Not found */
+	return NULL;
+}
+
+/* ---------------------------------------------------------------- */
+/*
+ * Call the commit handler in the driver
+ * (if exist and if conditions are right)
+ *
+ * Note : our current commit strategy is currently pretty dumb,
+ * but we will be able to improve on that...
+ * The goal is to try to agreagate as many changes as possible
+ * before doing the commit. Drivers that will define a commit handler
+ * are usually those that need a reset after changing parameters, so
+ * we want to minimise the number of reset.
+ * A cool idea is to use a timer : at each "set" command, we re-set the
+ * timer, when the timer eventually fires, we call the driver.
+ * Hopefully, more on that later.
+ *
+ * Also, I'm waiting to see how many people will complain about the
+ * netif_running(dev) test. I'm open on that one...
+ * Hopefully, the driver will remember to do a commit in "open()" ;-)
+ */
+static int call_commit_handler(struct net_device *dev)
+{
+	if ((netif_running(dev)) &&
+	   (dev->wireless_handlers->standard[0] != NULL))
+		/* Call the commit handler on the driver */
+		return dev->wireless_handlers->standard[0](dev, NULL,
+							   NULL, NULL);
+	else
+		return 0;		/* Command completed successfully */
+}
+
+/* ---------------------------------------------------------------- */
+/*
+ * Calculate size of private arguments
+ */
+static int get_priv_size(__u16 args)
+{
+	int	num = args & IW_PRIV_SIZE_MASK;
+	int	type = (args & IW_PRIV_TYPE_MASK) >> 12;
+
+	return num * iw_priv_type_size[type];
+}
+
+/* ---------------------------------------------------------------- */
+/*
+ * Re-calculate the size of private arguments
+ */
+static int adjust_priv_size(__u16 args, struct iw_point *iwp)
+{
+	int	num = iwp->length;
+	int	max = args & IW_PRIV_SIZE_MASK;
+	int	type = (args & IW_PRIV_TYPE_MASK) >> 12;
+
+	/* Make sure the driver doesn't goof up */
+	if (max < num)
+		num = max;
+
+	return num * iw_priv_type_size[type];
+}
+
+/* ---------------------------------------------------------------- */
+/*
+ * Standard Wireless Handler : get wireless stats
+ *	Allow programatic access to /proc/net/wireless even if /proc
+ *	doesn't exist... Also more efficient...
+ */
+static int iw_handler_get_iwstats(struct net_device *		dev,
+				  struct iw_request_info *	info,
+				  union iwreq_data *		wrqu,
+				  char *			extra)
+{
+	/* Get stats from the driver */
+	struct iw_statistics *stats;
+
+	stats = get_wireless_stats(dev);
+	if (stats) {
+		/* Copy statistics to extra */
+		memcpy(extra, stats, sizeof(struct iw_statistics));
+		wrqu->data.length = sizeof(struct iw_statistics);
+
+		/* Check if we need to clear the updated flag */
+		if (wrqu->data.flags != 0)
+			stats->qual.updated &= ~IW_QUAL_ALL_UPDATED;
+		return 0;
+	} else
+		return -EOPNOTSUPP;
+}
+
+/* ---------------------------------------------------------------- */
+/*
+ * Standard Wireless Handler : get iwpriv definitions
+ * Export the driver private handler definition
+ * They will be picked up by tools like iwpriv...
+ */
+static int iw_handler_get_private(struct net_device *		dev,
+				  struct iw_request_info *	info,
+				  union iwreq_data *		wrqu,
+				  char *			extra)
+{
+	/* Check if the driver has something to export */
+	if ((dev->wireless_handlers->num_private_args == 0) ||
+	   (dev->wireless_handlers->private_args == NULL))
+		return -EOPNOTSUPP;
+
+	/* Check if there is enough buffer up there */
+	if (wrqu->data.length < dev->wireless_handlers->num_private_args) {
+		/* User space can't know in advance how large the buffer
+		 * needs to be. Give it a hint, so that we can support
+		 * any size buffer we want somewhat efficiently... */
+		wrqu->data.length = dev->wireless_handlers->num_private_args;
+		return -E2BIG;
+	}
+
+	/* Set the number of available ioctls. */
+	wrqu->data.length = dev->wireless_handlers->num_private_args;
+
+	/* Copy structure to the user buffer. */
+	memcpy(extra, dev->wireless_handlers->private_args,
+	       sizeof(struct iw_priv_args) * wrqu->data.length);
+
+	return 0;
+}
+
+
+/******************** /proc/net/wireless SUPPORT ********************/
+/*
+ * The /proc/net/wireless file is a human readable user-space interface
+ * exporting various wireless specific statistics from the wireless devices.
+ * This is the most popular part of the Wireless Extensions ;-)
+ *
+ * This interface is a pure clone of /proc/net/dev (in net/core/dev.c).
+ * The content of the file is basically the content of "struct iw_statistics".
+ */
+
+#ifdef CONFIG_PROC_FS
+
+/* ---------------------------------------------------------------- */
+/*
+ * Print one entry (line) of /proc/net/wireless
+ */
+static void wireless_seq_printf_stats(struct seq_file *seq,
+				      struct net_device *dev)
+{
+	/* Get stats from the driver */
+	struct iw_statistics *stats = get_wireless_stats(dev);
+
+	if (stats) {
+		seq_printf(seq, "%6s: %04x  %3d%c  %3d%c  %3d%c  %6d %6d %6d "
+				"%6d %6d   %6d\n",
+			   dev->name, stats->status, stats->qual.qual,
+			   stats->qual.updated & IW_QUAL_QUAL_UPDATED
+			   ? '.' : ' ',
+			   ((__s32) stats->qual.level) -
+			   ((stats->qual.updated & IW_QUAL_DBM) ? 0x100 : 0),
+			   stats->qual.updated & IW_QUAL_LEVEL_UPDATED
+			   ? '.' : ' ',
+			   ((__s32) stats->qual.noise) -
+			   ((stats->qual.updated & IW_QUAL_DBM) ? 0x100 : 0),
+			   stats->qual.updated & IW_QUAL_NOISE_UPDATED
+			   ? '.' : ' ',
+			   stats->discard.nwid, stats->discard.code,
+			   stats->discard.fragment, stats->discard.retries,
+			   stats->discard.misc, stats->miss.beacon);
+		stats->qual.updated &= ~IW_QUAL_ALL_UPDATED;
+	}
+}
+
+/* ---------------------------------------------------------------- */
+/*
+ * Print info for /proc/net/wireless (print all entries)
+ */
+static int wireless_seq_show(struct seq_file *seq, void *v)
+{
+	if (v == SEQ_START_TOKEN)
+		seq_printf(seq, "Inter-| sta-|   Quality        |   Discarded "
+				"packets               | Missed | WE\n"
+				" face | tus | link level noise |  nwid  "
+				"crypt   frag  retry   misc | beacon | %d\n",
+			   WIRELESS_EXT);
+	else
+		wireless_seq_printf_stats(seq, v);
+	return 0;
+}
+
+static const struct seq_operations wireless_seq_ops = {
+	.start = dev_seq_start,
+	.next  = dev_seq_next,
+	.stop  = dev_seq_stop,
+	.show  = wireless_seq_show,
+};
+
+static int wireless_seq_open(struct inode *inode, struct file *file)
+{
+	return seq_open_net(inode, file, &wireless_seq_ops,
+			    sizeof(struct seq_net_private));
+}
+
+static const struct file_operations wireless_seq_fops = {
+	.owner	 = THIS_MODULE,
+	.open    = wireless_seq_open,
+	.read    = seq_read,
+	.llseek  = seq_lseek,
+	.release = seq_release_net,
+};
+
+int wext_proc_init(struct net *net)
+{
+	/* Create /proc/net/wireless entry */
+	if (!proc_net_fops_create(net, "wireless", S_IRUGO, &wireless_seq_fops))
+		return -ENOMEM;
+
+	return 0;
+}
+
+void wext_proc_exit(struct net *net)
+{
+	proc_net_remove(net, "wireless");
+}
+#endif	/* CONFIG_PROC_FS */
+
+/************************** IOCTL SUPPORT **************************/
+/*
+ * The original user space API to configure all those Wireless Extensions
+ * is through IOCTLs.
+ * In there, we check if we need to call the new driver API (iw_handler)
+ * or just call the driver ioctl handler.
+ */
+
+/* ---------------------------------------------------------------- */
+static int ioctl_standard_iw_point(struct iw_point *iwp, unsigned int cmd,
+				   const struct iw_ioctl_description *descr,
+				   iw_handler handler, struct net_device *dev,
+				   struct iw_request_info *info)
+{
+	int err, extra_size, user_length = 0, essid_compat = 0;
+	char *extra;
+
+	/* Calculate space needed by arguments. Always allocate
+	 * for max space.
+	 */
+	extra_size = descr->max_tokens * descr->token_size;
+
+	/* Check need for ESSID compatibility for WE < 21 */
+	switch (cmd) {
+	case SIOCSIWESSID:
+	case SIOCGIWESSID:
+	case SIOCSIWNICKN:
+	case SIOCGIWNICKN:
+		if (iwp->length == descr->max_tokens + 1)
+			essid_compat = 1;
+		else if (IW_IS_SET(cmd) && (iwp->length != 0)) {
+			char essid[IW_ESSID_MAX_SIZE + 1];
+
+			err = copy_from_user(essid, iwp->pointer,
+					     iwp->length *
+					     descr->token_size);
+			if (err)
+				return -EFAULT;
+
+			if (essid[iwp->length - 1] == '\0')
+				essid_compat = 1;
+		}
+		break;
+	default:
+		break;
+	}
+
+	iwp->length -= essid_compat;
+
+	/* Check what user space is giving us */
+	if (IW_IS_SET(cmd)) {
+		/* Check NULL pointer */
+		if (!iwp->pointer && iwp->length != 0)
+			return -EFAULT;
+		/* Check if number of token fits within bounds */
+		if (iwp->length > descr->max_tokens)
+			return -E2BIG;
+		if (iwp->length < descr->min_tokens)
+			return -EINVAL;
+	} else {
+		/* Check NULL pointer */
+		if (!iwp->pointer)
+			return -EFAULT;
+		/* Save user space buffer size for checking */
+		user_length = iwp->length;
+
+		/* Don't check if user_length > max to allow forward
+		 * compatibility. The test user_length < min is
+		 * implied by the test at the end.
+		 */
+
+		/* Support for very large requests */
+		if ((descr->flags & IW_DESCR_FLAG_NOMAX) &&
+		    (user_length > descr->max_tokens)) {
+			/* Allow userspace to GET more than max so
+			 * we can support any size GET requests.
+			 * There is still a limit : -ENOMEM.
+			 */
+			extra_size = user_length * descr->token_size;
+
+			/* Note : user_length is originally a __u16,
+			 * and token_size is controlled by us,
+			 * so extra_size won't get negative and
+			 * won't overflow...
+			 */
+		}
+	}
+
+	/* kzalloc() ensures NULL-termination for essid_compat. */
+	extra = kzalloc(extra_size, GFP_KERNEL);
+	if (!extra)
+		return -ENOMEM;
+
+	/* If it is a SET, get all the extra data in here */
+	if (IW_IS_SET(cmd) && (iwp->length != 0)) {
+		if (copy_from_user(extra, iwp->pointer,
+				   iwp->length *
+				   descr->token_size)) {
+			err = -EFAULT;
+			goto out;
+		}
+	}
+
+	err = handler(dev, info, (union iwreq_data *) iwp, extra);
+
+	iwp->length += essid_compat;
+
+	/* If we have something to return to the user */
+	if (!err && IW_IS_GET(cmd)) {
+		/* Check if there is enough buffer up there */
+		if (user_length < iwp->length) {
+			err = -E2BIG;
+			goto out;
+		}
+
+		if (copy_to_user(iwp->pointer, extra,
+				 iwp->length *
+				 descr->token_size)) {
+			err = -EFAULT;
+			goto out;
+		}
+	}
+
+	/* Generate an event to notify listeners of the change */
+	if ((descr->flags & IW_DESCR_FLAG_EVENT) && err == -EIWCOMMIT) {
+		union iwreq_data *data = (union iwreq_data *) iwp;
+
+		if (descr->flags & IW_DESCR_FLAG_RESTRICT)
+			/* If the event is restricted, don't
+			 * export the payload.
+			 */
+			wireless_send_event(dev, cmd, data, NULL);
+		else
+			wireless_send_event(dev, cmd, data, extra);
+	}
+
+out:
+	kfree(extra);
+	return err;
+}
+
+/*
+ * Wrapper to call a standard Wireless Extension handler.
+ * We do various checks and also take care of moving data between
+ * user space and kernel space.
+ */
+static int ioctl_standard_call(struct net_device *	dev,
+			       struct iwreq		*iwr,
+			       unsigned int		cmd,
+			       struct iw_request_info	*info,
+			       iw_handler		handler)
+{
+	const struct iw_ioctl_description *	descr;
+	int					ret = -EINVAL;
+
+	/* Get the description of the IOCTL */
+	if ((cmd - SIOCIWFIRST) >= standard_ioctl_num)
+		return -EOPNOTSUPP;
+	descr = &(standard_ioctl[cmd - SIOCIWFIRST]);
+
+	/* Check if we have a pointer to user space data or not */
+	if (descr->header_type != IW_HEADER_TYPE_POINT) {
+
+		/* No extra arguments. Trivial to handle */
+		ret = handler(dev, info, &(iwr->u), NULL);
+
+		/* Generate an event to notify listeners of the change */
+		if ((descr->flags & IW_DESCR_FLAG_EVENT) &&
+		   ((ret == 0) || (ret == -EIWCOMMIT)))
+			wireless_send_event(dev, cmd, &(iwr->u), NULL);
+	} else {
+		ret = ioctl_standard_iw_point(&iwr->u.data, cmd, descr,
+					      handler, dev, info);
+	}
+
+	/* Call commit handler if needed and defined */
+	if (ret == -EIWCOMMIT)
+		ret = call_commit_handler(dev);
+
+	/* Here, we will generate the appropriate event if needed */
+
+	return ret;
+}
+
+/* ---------------------------------------------------------------- */
+/*
+ * Wrapper to call a private Wireless Extension handler.
+ * We do various checks and also take care of moving data between
+ * user space and kernel space.
+ * It's not as nice and slimline as the standard wrapper. The cause
+ * is struct iw_priv_args, which was not really designed for the
+ * job we are going here.
+ *
+ * IMPORTANT : This function prevent to set and get data on the same
+ * IOCTL and enforce the SET/GET convention. Not doing it would be
+ * far too hairy...
+ * If you need to set and get data at the same time, please don't use
+ * a iw_handler but process it in your ioctl handler (i.e. use the
+ * old driver API).
+ */
+static int get_priv_descr_and_size(struct net_device *dev, unsigned int cmd,
+				   const struct iw_priv_args **descrp)
+{
+	const struct iw_priv_args *descr;
+	int i, extra_size;
+
+	descr = NULL;
+	for (i = 0; i < dev->wireless_handlers->num_private_args; i++) {
+		if (cmd == dev->wireless_handlers->private_args[i].cmd) {
+			descr = &dev->wireless_handlers->private_args[i];
+			break;
+		}
+	}
+
+	extra_size = 0;
+	if (descr) {
+		if (IW_IS_SET(cmd)) {
+			int	offset = 0;	/* For sub-ioctls */
+			/* Check for sub-ioctl handler */
+			if (descr->name[0] == '\0')
+				/* Reserve one int for sub-ioctl index */
+				offset = sizeof(__u32);
+
+			/* Size of set arguments */
+			extra_size = get_priv_size(descr->set_args);
+
+			/* Does it fits in iwr ? */
+			if ((descr->set_args & IW_PRIV_SIZE_FIXED) &&
+			   ((extra_size + offset) <= IFNAMSIZ))
+				extra_size = 0;
+		} else {
+			/* Size of get arguments */
+			extra_size = get_priv_size(descr->get_args);
+
+			/* Does it fits in iwr ? */
+			if ((descr->get_args & IW_PRIV_SIZE_FIXED) &&
+			   (extra_size <= IFNAMSIZ))
+				extra_size = 0;
+		}
+	}
+	*descrp = descr;
+	return extra_size;
+}
+
+static int ioctl_private_iw_point(struct iw_point *iwp, unsigned int cmd,
+				  const struct iw_priv_args *descr,
+				  iw_handler handler, struct net_device *dev,
+				  struct iw_request_info *info, int extra_size)
+{
+	char *extra;
+	int err;
+
+	/* Check what user space is giving us */
+	if (IW_IS_SET(cmd)) {
+		if (!iwp->pointer && iwp->length != 0)
+			return -EFAULT;
+
+		if (iwp->length > (descr->set_args & IW_PRIV_SIZE_MASK))
+			return -E2BIG;
+	} else if (!iwp->pointer)
+		return -EFAULT;
+
+	extra = kmalloc(extra_size, GFP_KERNEL);
+	if (!extra)
+		return -ENOMEM;
+
+	/* If it is a SET, get all the extra data in here */
+	if (IW_IS_SET(cmd) && (iwp->length != 0)) {
+		if (copy_from_user(extra, iwp->pointer, extra_size)) {
+			err = -EFAULT;
+			goto out;
+		}
+	}
+
+	/* Call the handler */
+	err = handler(dev, info, (union iwreq_data *) iwp, extra);
+
+	/* If we have something to return to the user */
+	if (!err && IW_IS_GET(cmd)) {
+		/* Adjust for the actual length if it's variable,
+		 * avoid leaking kernel bits outside.
+		 */
+		if (!(descr->get_args & IW_PRIV_SIZE_FIXED))
+			extra_size = adjust_priv_size(descr->get_args, iwp);
+
+		if (copy_to_user(iwp->pointer, extra, extra_size))
+			err =  -EFAULT;
+	}
+
+out:
+	kfree(extra);
+	return err;
+}
+
+static int ioctl_private_call(struct net_device *dev, struct iwreq *iwr,
+			      unsigned int cmd, struct iw_request_info *info,
+			      iw_handler handler)
+{
+	int extra_size = 0, ret = -EINVAL;
+	const struct iw_priv_args *descr;
+
+	extra_size = get_priv_descr_and_size(dev, cmd, &descr);
+
+	/* Check if we have a pointer to user space data or not. */
+	if (extra_size == 0) {
+		/* No extra arguments. Trivial to handle */
+		ret = handler(dev, info, &(iwr->u), (char *) &(iwr->u));
+	} else {
+		ret = ioctl_private_iw_point(&iwr->u.data, cmd, descr,
+					     handler, dev, info, extra_size);
+	}
+
+	/* Call commit handler if needed and defined */
+	if (ret == -EIWCOMMIT)
+		ret = call_commit_handler(dev);
+
+	return ret;
+}
+
+/* ---------------------------------------------------------------- */
+typedef int (*wext_ioctl_func)(struct net_device *, struct iwreq *,
+			       unsigned int, struct iw_request_info *,
+			       iw_handler);
+
+/*
+ * Main IOCTl dispatcher.
+ * Check the type of IOCTL and call the appropriate wrapper...
+ */
+static int wireless_process_ioctl(struct net *net, struct ifreq *ifr,
+				  unsigned int cmd,
+				  struct iw_request_info *info,
+				  wext_ioctl_func standard,
+				  wext_ioctl_func private)
+{
+	struct iwreq *iwr = (struct iwreq *) ifr;
+	struct net_device *dev;
+	iw_handler	handler;
+
+	/* Permissions are already checked in dev_ioctl() before calling us.
+	 * The copy_to/from_user() of ifr is also dealt with in there */
+
+	/* Make sure the device exist */
+	if ((dev = __dev_get_by_name(net, ifr->ifr_name)) == NULL)
+		return -ENODEV;
+
+	/* A bunch of special cases, then the generic case...
+	 * Note that 'cmd' is already filtered in dev_ioctl() with
+	 * (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) */
+	if (cmd == SIOCGIWSTATS)
+		return standard(dev, iwr, cmd, info,
+				&iw_handler_get_iwstats);
+
+	if (cmd == SIOCGIWPRIV && dev->wireless_handlers)
+		return standard(dev, iwr, cmd, info,
+				&iw_handler_get_private);
+
+	/* Basic check */
+	if (!netif_device_present(dev))
+		return -ENODEV;
+
+	/* New driver API : try to find the handler */
+	handler = get_handler(dev, cmd);
+	if (handler) {
+		/* Standard and private are not the same */
+		if (cmd < SIOCIWFIRSTPRIV)
+			return standard(dev, iwr, cmd, info, handler);
+		else
+			return private(dev, iwr, cmd, info, handler);
+	}
+	/* Old driver API : call driver ioctl handler */
+	if (dev->do_ioctl)
+		return dev->do_ioctl(dev, ifr, cmd);
+	return -EOPNOTSUPP;
+}
+
+/* If command is `set a parameter', or `get the encoding parameters',
+ * check if the user has the right to do it.
+ */
+static int wext_permission_check(unsigned int cmd)
+{
+	if ((IW_IS_SET(cmd) || cmd == SIOCGIWENCODE || cmd == SIOCGIWENCODEEXT)
+	    && !capable(CAP_NET_ADMIN))
+		return -EPERM;
+
+	return 0;
+}
+
+/* entry point from dev ioctl */
+static int wext_ioctl_dispatch(struct net *net, struct ifreq *ifr,
+			       unsigned int cmd, struct iw_request_info *info,
+			       wext_ioctl_func standard,
+			       wext_ioctl_func private)
+{
+	int ret = wext_permission_check(cmd);
+
+	if (ret)
+		return ret;
+
+	dev_load(net, ifr->ifr_name);
+	rtnl_lock();
+	ret = wireless_process_ioctl(net, ifr, cmd, info, standard, private);
+	rtnl_unlock();
+
+	return ret;
+}
+
+int wext_handle_ioctl(struct net *net, struct ifreq *ifr, unsigned int cmd,
+		      void __user *arg)
+{
+	struct iw_request_info info = { .cmd = cmd, .flags = 0 };
+	int ret;
+
+	ret = wext_ioctl_dispatch(net, ifr, cmd, &info,
+				  ioctl_standard_call,
+				  ioctl_private_call);
+	if (ret >= 0 &&
+	    IW_IS_GET(cmd) &&
+	    copy_to_user(arg, ifr, sizeof(struct iwreq)))
+		return -EFAULT;
+
+	return ret;
+}
+
+#ifdef CONFIG_COMPAT
+static int compat_standard_call(struct net_device	*dev,
+				struct iwreq		*iwr,
+				unsigned int		cmd,
+				struct iw_request_info	*info,
+				iw_handler		handler)
+{
+	const struct iw_ioctl_description *descr;
+	struct compat_iw_point *iwp_compat;
+	struct iw_point iwp;
+	int err;
+
+	descr = standard_ioctl + (cmd - SIOCIWFIRST);
+
+	if (descr->header_type != IW_HEADER_TYPE_POINT)
+		return ioctl_standard_call(dev, iwr, cmd, info, handler);
+
+	iwp_compat = (struct compat_iw_point *) &iwr->u.data;
+	iwp.pointer = compat_ptr(iwp_compat->pointer);
+	iwp.length = iwp_compat->length;
+	iwp.flags = iwp_compat->flags;
+
+	err = ioctl_standard_iw_point(&iwp, cmd, descr, handler, dev, info);
+
+	iwp_compat->pointer = ptr_to_compat(iwp.pointer);
+	iwp_compat->length = iwp.length;
+	iwp_compat->flags = iwp.flags;
+
+	return err;
+}
+
+static int compat_private_call(struct net_device *dev, struct iwreq *iwr,
+			       unsigned int cmd, struct iw_request_info *info,
+			       iw_handler handler)
+{
+	const struct iw_priv_args *descr;
+	int ret, extra_size;
+
+	extra_size = get_priv_descr_and_size(dev, cmd, &descr);
+
+	/* Check if we have a pointer to user space data or not. */
+	if (extra_size == 0) {
+		/* No extra arguments. Trivial to handle */
+		ret = handler(dev, info, &(iwr->u), (char *) &(iwr->u));
+	} else {
+		struct compat_iw_point *iwp_compat;
+		struct iw_point iwp;
+
+		iwp_compat = (struct compat_iw_point *) &iwr->u.data;
+		iwp.pointer = compat_ptr(iwp_compat->pointer);
+		iwp.length = iwp_compat->length;
+		iwp.flags = iwp_compat->flags;
+
+		ret = ioctl_private_iw_point(&iwp, cmd, descr,
+					     handler, dev, info, extra_size);
+
+		iwp_compat->pointer = ptr_to_compat(iwp.pointer);
+		iwp_compat->length = iwp.length;
+		iwp_compat->flags = iwp.flags;
+	}
+
+	/* Call commit handler if needed and defined */
+	if (ret == -EIWCOMMIT)
+		ret = call_commit_handler(dev);
+
+	return ret;
+}
+
+int compat_wext_handle_ioctl(struct net *net, unsigned int cmd,
+			     unsigned long arg)
+{
+	void __user *argp = (void __user *)arg;
+	struct iw_request_info info;
+	struct iwreq iwr;
+	char *colon;
+	int ret;
+
+	if (copy_from_user(&iwr, argp, sizeof(struct iwreq)))
+		return -EFAULT;
+
+	iwr.ifr_name[IFNAMSIZ-1] = 0;
+	colon = strchr(iwr.ifr_name, ':');
+	if (colon)
+		*colon = 0;
+
+	info.cmd = cmd;
+	info.flags = IW_REQUEST_FLAG_COMPAT;
+
+	ret = wext_ioctl_dispatch(net, (struct ifreq *) &iwr, cmd, &info,
+				  compat_standard_call,
+				  compat_private_call);
+
+	if (ret >= 0 &&
+	    IW_IS_GET(cmd) &&
+	    copy_to_user(argp, &iwr, sizeof(struct iwreq)))
+		return -EFAULT;
+
+	return ret;
+}
+#endif
+
+/************************* EVENT PROCESSING *************************/
+/*
+ * Process events generated by the wireless layer or the driver.
+ * Most often, the event will be propagated through rtnetlink
+ */
+
+/* ---------------------------------------------------------------- */
+/*
+ * Locking...
+ * ----------
+ *
+ * Thanks to Herbert Xu <herbert@gondor.apana.org.au> for fixing
+ * the locking issue in here and implementing this code !
+ *
+ * The issue : wireless_send_event() is often called in interrupt context,
+ * while the Netlink layer can never be called in interrupt context.
+ * The fully formed RtNetlink events are queued, and then a tasklet is run
+ * to feed those to Netlink.
+ * The skb_queue is interrupt safe, and its lock is not held while calling
+ * Netlink, so there is no possibility of dealock.
+ * Jean II
+ */
+
+static struct sk_buff_head wireless_nlevent_queue;
+
+static int __init wireless_nlevent_init(void)
+{
+	skb_queue_head_init(&wireless_nlevent_queue);
+	return 0;
+}
+
+subsys_initcall(wireless_nlevent_init);
+
+static void wireless_nlevent_process(unsigned long data)
+{
+	struct sk_buff *skb;
+
+	while ((skb = skb_dequeue(&wireless_nlevent_queue)))
+		rtnl_notify(skb, &init_net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
+}
+
+static DECLARE_TASKLET(wireless_nlevent_tasklet, wireless_nlevent_process, 0);
+
+/* ---------------------------------------------------------------- */
+/*
+ * Fill a rtnetlink message with our event data.
+ * Note that we propage only the specified event and don't dump the
+ * current wireless config. Dumping the wireless config is far too
+ * expensive (for each parameter, the driver need to query the hardware).
+ */
+static int rtnetlink_fill_iwinfo(struct sk_buff *skb, struct net_device *dev,
+				 int type, char *event, int event_len)
+{
+	struct ifinfomsg *r;
+	struct nlmsghdr  *nlh;
+
+	nlh = nlmsg_put(skb, 0, 0, type, sizeof(*r), 0);
+	if (nlh == NULL)
+		return -EMSGSIZE;
+
+	r = nlmsg_data(nlh);
+	r->ifi_family = AF_UNSPEC;
+	r->__ifi_pad = 0;
+	r->ifi_type = dev->type;
+	r->ifi_index = dev->ifindex;
+	r->ifi_flags = dev_get_flags(dev);
+	r->ifi_change = 0;	/* Wireless changes don't affect those flags */
+
+	NLA_PUT_STRING(skb, IFLA_IFNAME, dev->name);
+	/* Add the wireless events in the netlink packet */
+	NLA_PUT(skb, IFLA_WIRELESS, event_len, event);
+
+	return nlmsg_end(skb, nlh);
+
+nla_put_failure:
+	nlmsg_cancel(skb, nlh);
+	return -EMSGSIZE;
+}
+
+/* ---------------------------------------------------------------- */
+/*
+ * Create and broadcast and send it on the standard rtnetlink socket
+ * This is a pure clone rtmsg_ifinfo() in net/core/rtnetlink.c
+ * Andrzej Krzysztofowicz mandated that I used a IFLA_XXX field
+ * within a RTM_NEWLINK event.
+ */
+static void rtmsg_iwinfo(struct net_device *dev, char *event, int event_len)
+{
+	struct sk_buff *skb;
+	int err;
+
+	if (!net_eq(dev_net(dev), &init_net))
+		return;
+
+	skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
+	if (!skb)
+		return;
+
+	err = rtnetlink_fill_iwinfo(skb, dev, RTM_NEWLINK, event, event_len);
+	if (err < 0) {
+		WARN_ON(err == -EMSGSIZE);
+		kfree_skb(skb);
+		return;
+	}
+
+	NETLINK_CB(skb).dst_group = RTNLGRP_LINK;
+	skb_queue_tail(&wireless_nlevent_queue, skb);
+	tasklet_schedule(&wireless_nlevent_tasklet);
+}
+
+/* ---------------------------------------------------------------- */
+/*
+ * Main event dispatcher. Called from other parts and drivers.
+ * Send the event on the appropriate channels.
+ * May be called from interrupt context.
+ */
+void wireless_send_event(struct net_device *	dev,
+			 unsigned int		cmd,
+			 union iwreq_data *	wrqu,
+			 char *			extra)
+{
+	const struct iw_ioctl_description *	descr = NULL;
+	int extra_len = 0;
+	struct iw_event  *event;		/* Mallocated whole event */
+	int event_len;				/* Its size */
+	int hdr_len;				/* Size of the event header */
+	int wrqu_off = 0;			/* Offset in wrqu */
+	/* Don't "optimise" the following variable, it will crash */
+	unsigned	cmd_index;		/* *MUST* be unsigned */
+
+	/* Get the description of the Event */
+	if (cmd <= SIOCIWLAST) {
+		cmd_index = cmd - SIOCIWFIRST;
+		if (cmd_index < standard_ioctl_num)
+			descr = &(standard_ioctl[cmd_index]);
+	} else {
+		cmd_index = cmd - IWEVFIRST;
+		if (cmd_index < standard_event_num)
+			descr = &(standard_event[cmd_index]);
+	}
+	/* Don't accept unknown events */
+	if (descr == NULL) {
+		/* Note : we don't return an error to the driver, because
+		 * the driver would not know what to do about it. It can't
+		 * return an error to the user, because the event is not
+		 * initiated by a user request.
+		 * The best the driver could do is to log an error message.
+		 * We will do it ourselves instead...
+		 */
+		printk(KERN_ERR "%s (WE) : Invalid/Unknown Wireless Event (0x%04X)\n",
+		       dev->name, cmd);
+		return;
+	}
+
+	/* Check extra parameters and set extra_len */
+	if (descr->header_type == IW_HEADER_TYPE_POINT) {
+		/* Check if number of token fits within bounds */
+		if (wrqu->data.length > descr->max_tokens) {
+			printk(KERN_ERR "%s (WE) : Wireless Event too big (%d)\n", dev->name, wrqu->data.length);
+			return;
+		}
+		if (wrqu->data.length < descr->min_tokens) {
+			printk(KERN_ERR "%s (WE) : Wireless Event too small (%d)\n", dev->name, wrqu->data.length);
+			return;
+		}
+		/* Calculate extra_len - extra is NULL for restricted events */
+		if (extra != NULL)
+			extra_len = wrqu->data.length * descr->token_size;
+		/* Always at an offset in wrqu */
+		wrqu_off = IW_EV_POINT_OFF;
+	}
+
+	/* Total length of the event */
+	hdr_len = event_type_size[descr->header_type];
+	event_len = hdr_len + extra_len;
+
+	/* Create temporary buffer to hold the event */
+	event = kmalloc(event_len, GFP_ATOMIC);
+	if (event == NULL)
+		return;
+
+	/* Fill event */
+	event->len = event_len;
+	event->cmd = cmd;
+	memcpy(&event->u, ((char *) wrqu) + wrqu_off, hdr_len - IW_EV_LCP_LEN);
+	if (extra)
+		memcpy(((char *) event) + hdr_len, extra, extra_len);
+
+	/* Send via the RtNetlink event channel */
+	rtmsg_iwinfo(dev, (char *) event, event_len);
+
+	/* Cleanup */
+	kfree(event);
+
+	return;		/* Always success, I guess ;-) */
+}
+EXPORT_SYMBOL(wireless_send_event);
+
+/********************** ENHANCED IWSPY SUPPORT **********************/
+/*
+ * In the old days, the driver was handling spy support all by itself.
+ * Now, the driver can delegate this task to Wireless Extensions.
+ * It needs to use those standard spy iw_handler in struct iw_handler_def,
+ * push data to us via wireless_spy_update() and include struct iw_spy_data
+ * in its private part (and export it in net_device->wireless_data->spy_data).
+ * One of the main advantage of centralising spy support here is that
+ * it becomes much easier to improve and extend it without having to touch
+ * the drivers. One example is the addition of the Spy-Threshold events.
+ */
+
+/* ---------------------------------------------------------------- */
+/*
+ * Return the pointer to the spy data in the driver.
+ * Because this is called on the Rx path via wireless_spy_update(),
+ * we want it to be efficient...
+ */
+static inline struct iw_spy_data *get_spydata(struct net_device *dev)
+{
+	/* This is the new way */
+	if (dev->wireless_data)
+		return dev->wireless_data->spy_data;
+	return NULL;
+}
+
+/*------------------------------------------------------------------*/
+/*
+ * Standard Wireless Handler : set Spy List
+ */
+int iw_handler_set_spy(struct net_device *	dev,
+		       struct iw_request_info *	info,
+		       union iwreq_data *	wrqu,
+		       char *			extra)
+{
+	struct iw_spy_data *	spydata = get_spydata(dev);
+	struct sockaddr *	address = (struct sockaddr *) extra;
+
+	/* Make sure driver is not buggy or using the old API */
+	if (!spydata)
+		return -EOPNOTSUPP;
+
+	/* Disable spy collection while we copy the addresses.
+	 * While we copy addresses, any call to wireless_spy_update()
+	 * will NOP. This is OK, as anyway the addresses are changing. */
+	spydata->spy_number = 0;
+
+	/* We want to operate without locking, because wireless_spy_update()
+	 * most likely will happen in the interrupt handler, and therefore
+	 * have its own locking constraints and needs performance.
+	 * The rtnl_lock() make sure we don't race with the other iw_handlers.
+	 * This make sure wireless_spy_update() "see" that the spy list
+	 * is temporarily disabled. */
+	smp_wmb();
+
+	/* Are there are addresses to copy? */
+	if (wrqu->data.length > 0) {
+		int i;
+
+		/* Copy addresses */
+		for (i = 0; i < wrqu->data.length; i++)
+			memcpy(spydata->spy_address[i], address[i].sa_data,
+			       ETH_ALEN);
+		/* Reset stats */
+		memset(spydata->spy_stat, 0,
+		       sizeof(struct iw_quality) * IW_MAX_SPY);
+	}
+
+	/* Make sure above is updated before re-enabling */
+	smp_wmb();
+
+	/* Enable addresses */
+	spydata->spy_number = wrqu->data.length;
+
+	return 0;
+}
+EXPORT_SYMBOL(iw_handler_set_spy);
+
+/*------------------------------------------------------------------*/
+/*
+ * Standard Wireless Handler : get Spy List
+ */
+int iw_handler_get_spy(struct net_device *	dev,
+		       struct iw_request_info *	info,
+		       union iwreq_data *	wrqu,
+		       char *			extra)
+{
+	struct iw_spy_data *	spydata = get_spydata(dev);
+	struct sockaddr *	address = (struct sockaddr *) extra;
+	int			i;
+
+	/* Make sure driver is not buggy or using the old API */
+	if (!spydata)
+		return -EOPNOTSUPP;
+
+	wrqu->data.length = spydata->spy_number;
+
+	/* Copy addresses. */
+	for (i = 0; i < spydata->spy_number; i++) 	{
+		memcpy(address[i].sa_data, spydata->spy_address[i], ETH_ALEN);
+		address[i].sa_family = AF_UNIX;
+	}
+	/* Copy stats to the user buffer (just after). */
+	if (spydata->spy_number > 0)
+		memcpy(extra  + (sizeof(struct sockaddr) *spydata->spy_number),
+		       spydata->spy_stat,
+		       sizeof(struct iw_quality) * spydata->spy_number);
+	/* Reset updated flags. */
+	for (i = 0; i < spydata->spy_number; i++)
+		spydata->spy_stat[i].updated &= ~IW_QUAL_ALL_UPDATED;
+	return 0;
+}
+EXPORT_SYMBOL(iw_handler_get_spy);
+
+/*------------------------------------------------------------------*/
+/*
+ * Standard Wireless Handler : set spy threshold
+ */
+int iw_handler_set_thrspy(struct net_device *	dev,
+			  struct iw_request_info *info,
+			  union iwreq_data *	wrqu,
+			  char *		extra)
+{
+	struct iw_spy_data *	spydata = get_spydata(dev);
+	struct iw_thrspy *	threshold = (struct iw_thrspy *) extra;
+
+	/* Make sure driver is not buggy or using the old API */
+	if (!spydata)
+		return -EOPNOTSUPP;
+
+	/* Just do it */
+	memcpy(&(spydata->spy_thr_low), &(threshold->low),
+	       2 * sizeof(struct iw_quality));
+
+	/* Clear flag */
+	memset(spydata->spy_thr_under, '\0', sizeof(spydata->spy_thr_under));
+
+	return 0;
+}
+EXPORT_SYMBOL(iw_handler_set_thrspy);
+
+/*------------------------------------------------------------------*/
+/*
+ * Standard Wireless Handler : get spy threshold
+ */
+int iw_handler_get_thrspy(struct net_device *	dev,
+			  struct iw_request_info *info,
+			  union iwreq_data *	wrqu,
+			  char *		extra)
+{
+	struct iw_spy_data *	spydata = get_spydata(dev);
+	struct iw_thrspy *	threshold = (struct iw_thrspy *) extra;
+
+	/* Make sure driver is not buggy or using the old API */
+	if (!spydata)
+		return -EOPNOTSUPP;
+
+	/* Just do it */
+	memcpy(&(threshold->low), &(spydata->spy_thr_low),
+	       2 * sizeof(struct iw_quality));
+
+	return 0;
+}
+EXPORT_SYMBOL(iw_handler_get_thrspy);
+
+/*------------------------------------------------------------------*/
+/*
+ * Prepare and send a Spy Threshold event
+ */
+static void iw_send_thrspy_event(struct net_device *	dev,
+				 struct iw_spy_data *	spydata,
+				 unsigned char *	address,
+				 struct iw_quality *	wstats)
+{
+	union iwreq_data	wrqu;
+	struct iw_thrspy	threshold;
+
+	/* Init */
+	wrqu.data.length = 1;
+	wrqu.data.flags = 0;
+	/* Copy address */
+	memcpy(threshold.addr.sa_data, address, ETH_ALEN);
+	threshold.addr.sa_family = ARPHRD_ETHER;
+	/* Copy stats */
+	memcpy(&(threshold.qual), wstats, sizeof(struct iw_quality));
+	/* Copy also thresholds */
+	memcpy(&(threshold.low), &(spydata->spy_thr_low),
+	       2 * sizeof(struct iw_quality));
+
+	/* Send event to user space */
+	wireless_send_event(dev, SIOCGIWTHRSPY, &wrqu, (char *) &threshold);
+}
+
+/* ---------------------------------------------------------------- */
+/*
+ * Call for the driver to update the spy data.
+ * For now, the spy data is a simple array. As the size of the array is
+ * small, this is good enough. If we wanted to support larger number of
+ * spy addresses, we should use something more efficient...
+ */
+void wireless_spy_update(struct net_device *	dev,
+			 unsigned char *	address,
+			 struct iw_quality *	wstats)
+{
+	struct iw_spy_data *	spydata = get_spydata(dev);
+	int			i;
+	int			match = -1;
+
+	/* Make sure driver is not buggy or using the old API */
+	if (!spydata)
+		return;
+
+	/* Update all records that match */
+	for (i = 0; i < spydata->spy_number; i++)
+		if (!compare_ether_addr(address, spydata->spy_address[i])) {
+			memcpy(&(spydata->spy_stat[i]), wstats,
+			       sizeof(struct iw_quality));
+			match = i;
+		}
+
+	/* Generate an event if we cross the spy threshold.
+	 * To avoid event storms, we have a simple hysteresis : we generate
+	 * event only when we go under the low threshold or above the
+	 * high threshold. */
+	if (match >= 0) {
+		if (spydata->spy_thr_under[match]) {
+			if (wstats->level > spydata->spy_thr_high.level) {
+				spydata->spy_thr_under[match] = 0;
+				iw_send_thrspy_event(dev, spydata,
+						     address, wstats);
+			}
+		} else {
+			if (wstats->level < spydata->spy_thr_low.level) {
+				spydata->spy_thr_under[match] = 1;
+				iw_send_thrspy_event(dev, spydata,
+						     address, wstats);
+			}
+		}
+	}
+}
+EXPORT_SYMBOL(wireless_spy_update);