Merge branch 'linus' into locking-for-linus

Conflicts:
	lib/Kconfig.debug

15 files changed, 3501 insertions, 546 deletions

diff --git a/net/wireless/Kconfig b/net/wireless/Kconfig
index e28e2b8fa436..3c3bc9e579ed 100644
--- a/net/wireless/Kconfig
+++ b/net/wireless/Kconfig
@@ -10,51 +10,19 @@ config CFG80211_REG_DEBUG
 
 	  If unsure, say N.
 
-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
+	default n
 	---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.
-
-	  Note: You will need CRDA if you want 802.11d support
-
-	  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.
+	  and uses it within the new framework. This option is available
+	  for historical reasons and it is advised to leave it off.
+
+	  For details see:
+
+	  http://wireless.kernel.org/en/developers/Regulatory
+
+	  Say N and if you say Y, please tell us why. The default is N.
 
 config WIRELESS_EXT
 	bool "Wireless extensions"
@@ -102,3 +70,13 @@ config LIB80211_CRYPT_CCMP
 
 config LIB80211_CRYPT_TKIP
 	tristate
+
+config LIB80211_DEBUG
+	bool "lib80211 debugging messages"
+	depends on LIB80211
+	default n
+	---help---
+	  You can enable this if you want verbose debugging messages
+	  from lib80211.
+
+	  If unsure, say N.
diff --git a/net/wireless/Makefile b/net/wireless/Makefile
index 938a334c8dbc..6d1e7b27b752 100644
--- a/net/wireless/Makefile
+++ b/net/wireless/Makefile
@@ -5,8 +5,7 @@ obj-$(CONFIG_LIB80211_CRYPT_WEP) += lib80211_crypt_wep.o
 obj-$(CONFIG_LIB80211_CRYPT_CCMP) += lib80211_crypt_ccmp.o
 obj-$(CONFIG_LIB80211_CRYPT_TKIP) += lib80211_crypt_tkip.o
 
-cfg80211-y += core.o sysfs.o radiotap.o util.o reg.o
+cfg80211-y += core.o sysfs.o radiotap.o util.o reg.o scan.o nl80211.o mlme.o
 cfg80211-$(CONFIG_WIRELESS_EXT) += wext-compat.o
-cfg80211-$(CONFIG_NL80211) += nl80211.o
 
 ccflags-y += -D__CHECK_ENDIAN__
diff --git a/net/wireless/core.c b/net/wireless/core.c
index b96fc0c3f1c4..d1f556535f6d 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -7,7 +7,6 @@
 #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>
@@ -31,18 +30,29 @@ MODULE_DESCRIPTION("wireless configuration support");
  * 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);
+
+/*
+ * This is used to protect the cfg80211_drv_list, cfg80211_regdomain,
+ * country_ie_regdomain, the reg_beacon_list and the the last regulatory
+ * request receipt (last_request).
+ */
+DEFINE_MUTEX(cfg80211_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)
+/* requires cfg80211_mutex to be held! */
+struct cfg80211_registered_device *cfg80211_drv_by_wiphy_idx(int wiphy_idx)
 {
 	struct cfg80211_registered_device *result = NULL, *drv;
 
+	if (!wiphy_idx_valid(wiphy_idx))
+		return NULL;
+
+	assert_cfg80211_lock();
+
 	list_for_each_entry(drv, &cfg80211_drv_list, list) {
-		if (drv->idx == wiphy) {
+		if (drv->wiphy_idx == wiphy_idx) {
 			result = drv;
 			break;
 		}
@@ -51,17 +61,44 @@ static struct cfg80211_registered_device *cfg80211_drv_by_wiphy(int wiphy)
 	return result;
 }
 
+int get_wiphy_idx(struct wiphy *wiphy)
+{
+	struct cfg80211_registered_device *drv;
+	if (!wiphy)
+		return WIPHY_IDX_STALE;
+	drv = wiphy_to_dev(wiphy);
+	return drv->wiphy_idx;
+}
+
 /* requires cfg80211_drv_mutex to be held! */
-static struct cfg80211_registered_device *
+struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx)
+{
+	struct cfg80211_registered_device *drv;
+
+	if (!wiphy_idx_valid(wiphy_idx))
+		return NULL;
+
+	assert_cfg80211_lock();
+
+	drv = cfg80211_drv_by_wiphy_idx(wiphy_idx);
+	if (!drv)
+		return NULL;
+	return &drv->wiphy;
+}
+
+/* requires cfg80211_mutex to be held! */
+struct cfg80211_registered_device *
 __cfg80211_drv_from_info(struct genl_info *info)
 {
 	int ifindex;
-	struct cfg80211_registered_device *bywiphy = NULL, *byifidx = NULL;
+	struct cfg80211_registered_device *bywiphyidx = NULL, *byifidx = NULL;
 	struct net_device *dev;
 	int err = -EINVAL;
 
+	assert_cfg80211_lock();
+
 	if (info->attrs[NL80211_ATTR_WIPHY]) {
-		bywiphy = cfg80211_drv_by_wiphy(
+		bywiphyidx = cfg80211_drv_by_wiphy_idx(
 				nla_get_u32(info->attrs[NL80211_ATTR_WIPHY]));
 		err = -ENODEV;
 	}
@@ -78,14 +115,14 @@ __cfg80211_drv_from_info(struct genl_info *info)
 		err = -ENODEV;
 	}
 
-	if (bywiphy && byifidx) {
-		if (bywiphy != byifidx)
+	if (bywiphyidx && byifidx) {
+		if (bywiphyidx != byifidx)
 			return ERR_PTR(-EINVAL);
 		else
-			return bywiphy; /* == byifidx */
+			return bywiphyidx; /* == byifidx */
 	}
-	if (bywiphy)
-		return bywiphy;
+	if (bywiphyidx)
+		return bywiphyidx;
 
 	if (byifidx)
 		return byifidx;
@@ -98,7 +135,7 @@ cfg80211_get_dev_from_info(struct genl_info *info)
 {
 	struct cfg80211_registered_device *drv;
 
-	mutex_lock(&cfg80211_drv_mutex);
+	mutex_lock(&cfg80211_mutex);
 	drv = __cfg80211_drv_from_info(info);
 
 	/* if it is not an error we grab the lock on
@@ -107,7 +144,7 @@ cfg80211_get_dev_from_info(struct genl_info *info)
 	if (!IS_ERR(drv))
 		mutex_lock(&drv->mtx);
 
-	mutex_unlock(&cfg80211_drv_mutex);
+	mutex_unlock(&cfg80211_mutex);
 
 	return drv;
 }
@@ -118,7 +155,7 @@ cfg80211_get_dev_from_ifindex(int ifindex)
 	struct cfg80211_registered_device *drv = ERR_PTR(-ENODEV);
 	struct net_device *dev;
 
-	mutex_lock(&cfg80211_drv_mutex);
+	mutex_lock(&cfg80211_mutex);
 	dev = dev_get_by_index(&init_net, ifindex);
 	if (!dev)
 		goto out;
@@ -129,7 +166,7 @@ cfg80211_get_dev_from_ifindex(int ifindex)
 		drv = ERR_PTR(-ENODEV);
 	dev_put(dev);
  out:
-	mutex_unlock(&cfg80211_drv_mutex);
+	mutex_unlock(&cfg80211_mutex);
 	return drv;
 }
 
@@ -139,49 +176,43 @@ void cfg80211_put_dev(struct cfg80211_registered_device *drv)
 	mutex_unlock(&drv->mtx);
 }
 
+/* requires cfg80211_mutex to be held */
 int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
 			char *newname)
 {
 	struct cfg80211_registered_device *drv;
-	int idx, taken = -1, result, digits;
+	int wiphy_idx, taken = -1, result, digits;
 
-	mutex_lock(&cfg80211_drv_mutex);
+	assert_cfg80211_lock();
 
 	/* 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 */
+	sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken);
+	if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) {
+		/* count number of places needed to print wiphy_idx */
 		digits = 1;
-		while (idx /= 10)
+		while (wiphy_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;
+			return -EINVAL;
 	}
 
 
 	/* Ignore nop renames */
-	result = 0;
 	if (strcmp(newname, dev_name(&rdev->wiphy.dev)) == 0)
-		goto out_unlock;
+		return 0;
 
 	/* Ensure another device does not already have this name. */
-	list_for_each_entry(drv, &cfg80211_drv_list, list) {
-		result = -EINVAL;
+	list_for_each_entry(drv, &cfg80211_drv_list, list)
 		if (strcmp(newname, dev_name(&drv->wiphy.dev)) == 0)
-			goto out_unlock;
-	}
+			return -EINVAL;
 
-	/* 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;
+		return result;
 
 	if (rdev->wiphy.debugfsdir &&
 	    !debugfs_rename(rdev->wiphy.debugfsdir->d_parent,
@@ -191,13 +222,9 @@ int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
 		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);
+	nl80211_notify_dev_rename(rdev);
 
-	return result;
+	return 0;
 }
 
 /* exported functions */
@@ -220,26 +247,28 @@ struct wiphy *wiphy_new(struct cfg80211_ops *ops, int sizeof_priv)
 
 	drv->ops = ops;
 
-	mutex_lock(&cfg80211_drv_mutex);
+	mutex_lock(&cfg80211_mutex);
 
-	drv->idx = wiphy_counter++;
+	drv->wiphy_idx = wiphy_counter++;
 
-	if (unlikely(drv->idx < 0)) {
+	if (unlikely(!wiphy_idx_valid(drv->wiphy_idx))) {
 		wiphy_counter--;
-		mutex_unlock(&cfg80211_drv_mutex);
+		mutex_unlock(&cfg80211_mutex);
 		/* ugh, wrapped! */
 		kfree(drv);
 		return NULL;
 	}
 
-	mutex_unlock(&cfg80211_drv_mutex);
+	mutex_unlock(&cfg80211_mutex);
 
 	/* give it a proper name */
-	dev_set_name(&drv->wiphy.dev, PHY_NAME "%d", drv->idx);
+	dev_set_name(&drv->wiphy.dev, PHY_NAME "%d", drv->wiphy_idx);
 
 	mutex_init(&drv->mtx);
 	mutex_init(&drv->devlist_mtx);
 	INIT_LIST_HEAD(&drv->netdev_list);
+	spin_lock_init(&drv->bss_lock);
+	INIT_LIST_HEAD(&drv->bss_list);
 
 	device_initialize(&drv->wiphy.dev);
 	drv->wiphy.dev.class = &ieee80211_class;
@@ -259,6 +288,9 @@ int wiphy_register(struct wiphy *wiphy)
 	int i;
 	u16 ifmodes = wiphy->interface_modes;
 
+	if (WARN_ON(wiphy->max_scan_ssids < 1))
+		return -EINVAL;
+
 	/* sanity check ifmodes */
 	WARN_ON(!ifmodes);
 	ifmodes &= ((1 << __NL80211_IFTYPE_AFTER_LAST) - 1) & ~1;
@@ -273,10 +305,16 @@ int wiphy_register(struct wiphy *wiphy)
 
 		sband->band = band;
 
-		if (!sband->n_channels || !sband->n_bitrates) {
-			WARN_ON(1);
+		if (WARN_ON(!sband->n_channels || !sband->n_bitrates))
+			return -EINVAL;
+
+		/*
+		 * Since we use a u32 for rate bitmaps in
+		 * ieee80211_get_response_rate, we cannot
+		 * have more than 32 legacy rates.
+		 */
+		if (WARN_ON(sband->n_bitrates > 32))
 			return -EINVAL;
-		}
 
 		for (i = 0; i < sband->n_channels; i++) {
 			sband->channels[i].orig_flags =
@@ -299,10 +337,10 @@ int wiphy_register(struct wiphy *wiphy)
 	/* check and set up bitrates */
 	ieee80211_set_bitrate_flags(wiphy);
 
-	mutex_lock(&cfg80211_drv_mutex);
+	mutex_lock(&cfg80211_mutex);
 
 	/* set up regulatory info */
-	wiphy_update_regulatory(wiphy, REGDOM_SET_BY_CORE);
+	wiphy_update_regulatory(wiphy, NL80211_REGDOM_SET_BY_CORE);
 
 	res = device_add(&drv->wiphy.dev);
 	if (res)
@@ -317,9 +355,20 @@ int wiphy_register(struct wiphy *wiphy)
 	if (IS_ERR(drv->wiphy.debugfsdir))
 		drv->wiphy.debugfsdir = NULL;
 
+	if (wiphy->custom_regulatory) {
+		struct regulatory_request request;
+
+		request.wiphy_idx = get_wiphy_idx(wiphy);
+		request.initiator = NL80211_REGDOM_SET_BY_DRIVER;
+		request.alpha2[0] = '9';
+		request.alpha2[1] = '9';
+
+		nl80211_send_reg_change_event(&request);
+	}
+
 	res = 0;
 out_unlock:
-	mutex_unlock(&cfg80211_drv_mutex);
+	mutex_unlock(&cfg80211_mutex);
 	return res;
 }
 EXPORT_SYMBOL(wiphy_register);
@@ -329,7 +378,7 @@ void wiphy_unregister(struct wiphy *wiphy)
 	struct cfg80211_registered_device *drv = wiphy_to_dev(wiphy);
 
 	/* protect the device list */
-	mutex_lock(&cfg80211_drv_mutex);
+	mutex_lock(&cfg80211_mutex);
 
 	BUG_ON(!list_empty(&drv->netdev_list));
 
@@ -355,14 +404,17 @@ void wiphy_unregister(struct wiphy *wiphy)
 	device_del(&drv->wiphy.dev);
 	debugfs_remove(drv->wiphy.debugfsdir);
 
-	mutex_unlock(&cfg80211_drv_mutex);
+	mutex_unlock(&cfg80211_mutex);
 }
 EXPORT_SYMBOL(wiphy_unregister);
 
 void cfg80211_dev_free(struct cfg80211_registered_device *drv)
 {
+	struct cfg80211_internal_bss *scan, *tmp;
 	mutex_destroy(&drv->mtx);
 	mutex_destroy(&drv->devlist_mtx);
+	list_for_each_entry_safe(scan, tmp, &drv->bss_list, list)
+		cfg80211_put_bss(&scan->pub);
 	kfree(drv);
 }
 
diff --git a/net/wireless/core.h b/net/wireless/core.h
index f7fb9f413028..d43daa236ef9 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -8,6 +8,9 @@
 #include <linux/mutex.h>
 #include <linux/list.h>
 #include <linux/netdevice.h>
+#include <linux/kref.h>
+#include <linux/rbtree.h>
+#include <linux/mutex.h>
 #include <net/genetlink.h>
 #include <net/wireless.h>
 #include <net/cfg80211.h>
@@ -35,12 +38,20 @@ struct cfg80211_registered_device {
 	enum environment_cap env;
 
 	/* wiphy index, internal only */
-	int idx;
+	int wiphy_idx;
 
 	/* associate netdev list */
 	struct mutex devlist_mtx;
 	struct list_head netdev_list;
 
+	/* BSSes/scanning */
+	spinlock_t bss_lock;
+	struct list_head bss_list;
+	struct rb_root bss_tree;
+	u32 bss_generation;
+	struct cfg80211_scan_request *scan_req; /* protected by RTNL */
+	unsigned long suspend_at;
+
 	/* 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)));
@@ -53,9 +64,44 @@ struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy)
 	return container_of(wiphy, struct cfg80211_registered_device, wiphy);
 }
 
-extern struct mutex cfg80211_drv_mutex;
+/* Note 0 is valid, hence phy0 */
+static inline
+bool wiphy_idx_valid(int wiphy_idx)
+{
+	return (wiphy_idx >= 0);
+}
+
+extern struct mutex cfg80211_mutex;
 extern struct list_head cfg80211_drv_list;
 
+static inline void assert_cfg80211_lock(void)
+{
+	WARN_ON(!mutex_is_locked(&cfg80211_mutex));
+}
+
+/*
+ * You can use this to mark a wiphy_idx as not having an associated wiphy.
+ * It guarantees cfg80211_drv_by_wiphy_idx(wiphy_idx) will return NULL
+ */
+#define WIPHY_IDX_STALE -1
+
+struct cfg80211_internal_bss {
+	struct list_head list;
+	struct rb_node rbn;
+	unsigned long ts;
+	struct kref ref;
+	bool hold;
+
+	/* must be last because of priv member */
+	struct cfg80211_bss pub;
+};
+
+struct cfg80211_registered_device *cfg80211_drv_by_wiphy_idx(int wiphy_idx);
+int get_wiphy_idx(struct wiphy *wiphy);
+
+struct cfg80211_registered_device *
+__cfg80211_drv_from_info(struct genl_info *info);
+
 /*
  * This function returns a pointer to the driver
  * that the genl_info item that is passed refers to.
@@ -63,13 +109,13 @@ extern struct list_head cfg80211_drv_list;
  * the driver's mutex!
  *
  * This means that you need to call cfg80211_put_dev()
- * before being allowed to acquire &cfg80211_drv_mutex!
+ * before being allowed to acquire &cfg80211_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
+ * We don't want to keep cfg80211_mutex locked
  * for all the time in order to allow requests on
  * other interfaces to go through at the same time.
  *
@@ -79,6 +125,9 @@ extern struct list_head cfg80211_drv_list;
 extern struct cfg80211_registered_device *
 cfg80211_get_dev_from_info(struct genl_info *info);
 
+/* requires cfg80211_drv_mutex to be held! */
+struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
+
 /* identical to cfg80211_get_dev_from_info but only operate on ifindex */
 extern struct cfg80211_registered_device *
 cfg80211_get_dev_from_ifindex(int ifindex);
@@ -92,6 +141,11 @@ 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);
+void wiphy_update_regulatory(struct wiphy *wiphy,
+			     enum nl80211_reg_initiator setby);
+
+void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
+void cfg80211_bss_age(struct cfg80211_registered_device *dev,
+                      unsigned long age_secs);
 
 #endif /* __NET_WIRELESS_CORE_H */
diff --git a/net/wireless/lib80211_crypt_ccmp.c b/net/wireless/lib80211_crypt_ccmp.c
index db428194c16a..2301dc1edc4c 100644
--- a/net/wireless/lib80211_crypt_ccmp.c
+++ b/net/wireless/lib80211_crypt_ccmp.c
@@ -337,6 +337,7 @@ static int lib80211_ccmp_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
 	pos += 8;
 
 	if (ccmp_replay_check(pn, key->rx_pn)) {
+#ifdef CONFIG_LIB80211_DEBUG
 		if (net_ratelimit()) {
 			printk(KERN_DEBUG "CCMP: replay detected: STA=%pM "
 				 "previous PN %02x%02x%02x%02x%02x%02x "
@@ -346,6 +347,7 @@ static int lib80211_ccmp_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
 				 key->rx_pn[3], key->rx_pn[4], key->rx_pn[5],
 				 pn[0], pn[1], pn[2], pn[3], pn[4], pn[5]);
 		}
+#endif
 		key->dot11RSNAStatsCCMPReplays++;
 		return -4;
 	}
diff --git a/net/wireless/lib80211_crypt_tkip.c b/net/wireless/lib80211_crypt_tkip.c
index 7e8e22bfed90..c36287399d7e 100644
--- a/net/wireless/lib80211_crypt_tkip.c
+++ b/net/wireless/lib80211_crypt_tkip.c
@@ -465,12 +465,14 @@ static int lib80211_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
 	pos += 8;
 
 	if (tkip_replay_check(iv32, iv16, tkey->rx_iv32, tkey->rx_iv16)) {
+#ifdef CONFIG_LIB80211_DEBUG
 		if (net_ratelimit()) {
 			printk(KERN_DEBUG "TKIP: replay detected: STA=%pM"
 			       " previous TSC %08x%04x received TSC "
 			       "%08x%04x\n", hdr->addr2,
 			       tkey->rx_iv32, tkey->rx_iv16, iv32, iv16);
 		}
+#endif
 		tkey->dot11RSNAStatsTKIPReplays++;
 		return -4;
 	}
@@ -505,10 +507,12 @@ static int lib80211_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
 			 * it needs to be recalculated for the next packet. */
 			tkey->rx_phase1_done = 0;
 		}
+#ifdef CONFIG_LIB80211_DEBUG
 		if (net_ratelimit()) {
 			printk(KERN_DEBUG "TKIP: ICV error detected: STA="
 			       "%pM\n", hdr->addr2);
 		}
+#endif
 		tkey->dot11RSNAStatsTKIPICVErrors++;
 		return -5;
 	}
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
new file mode 100644
index 000000000000..bec5721b6f99
--- /dev/null
+++ b/net/wireless/mlme.c
@@ -0,0 +1,46 @@
+/*
+ * cfg80211 MLME SAP interface
+ *
+ * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/nl80211.h>
+#include <net/cfg80211.h>
+#include "core.h"
+#include "nl80211.h"
+
+void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len)
+{
+	struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
+	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+	nl80211_send_rx_auth(rdev, dev, buf, len);
+}
+EXPORT_SYMBOL(cfg80211_send_rx_auth);
+
+void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len)
+{
+	struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
+	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+	nl80211_send_rx_assoc(rdev, dev, buf, len);
+}
+EXPORT_SYMBOL(cfg80211_send_rx_assoc);
+
+void cfg80211_send_rx_deauth(struct net_device *dev, const u8 *buf, size_t len)
+{
+	struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
+	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+	nl80211_send_rx_deauth(rdev, dev, buf, len);
+}
+EXPORT_SYMBOL(cfg80211_send_rx_deauth);
+
+void cfg80211_send_rx_disassoc(struct net_device *dev, const u8 *buf,
+			       size_t len)
+{
+	struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
+	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+	nl80211_send_rx_disassoc(rdev, dev, buf, len);
+}
+EXPORT_SYMBOL(cfg80211_send_rx_disassoc);
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 1e728fff474e..353e1a4ece83 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -7,13 +7,13 @@
 #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 <linux/etherdevice.h>
 #include <net/genetlink.h>
 #include <net/cfg80211.h>
 #include "core.h"
@@ -105,6 +105,17 @@ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
 
 	[NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
 					 .len = NL80211_HT_CAPABILITY_LEN },
+
+	[NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
+	[NL80211_ATTR_IE] = { .type = NLA_BINARY,
+			      .len = IEEE80211_MAX_DATA_LEN },
+	[NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
+	[NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
+
+	[NL80211_ATTR_SSID] = { .type = NLA_BINARY,
+				.len = IEEE80211_MAX_SSID_LEN },
+	[NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
+	[NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 };
 
 /* message building helper */
@@ -125,6 +136,7 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
 	struct nlattr *nl_freqs, *nl_freq;
 	struct nlattr *nl_rates, *nl_rate;
 	struct nlattr *nl_modes;
+	struct nlattr *nl_cmds;
 	enum ieee80211_band band;
 	struct ieee80211_channel *chan;
 	struct ieee80211_rate *rate;
@@ -135,8 +147,10 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
 	if (!hdr)
 		return -1;
 
-	NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->idx);
+	NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
 	NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
+	NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
+		   dev->wiphy.max_scan_ssids);
 
 	nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES);
 	if (!nl_modes)
@@ -234,6 +248,35 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
 	}
 	nla_nest_end(msg, nl_bands);
 
+	nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
+	if (!nl_cmds)
+		goto nla_put_failure;
+
+	i = 0;
+#define CMD(op, n)						\
+	 do {							\
+		if (dev->ops->op) {				\
+			i++;					\
+			NLA_PUT_U32(msg, i, NL80211_CMD_ ## n);	\
+		}						\
+	} while (0)
+
+	CMD(add_virtual_intf, NEW_INTERFACE);
+	CMD(change_virtual_intf, SET_INTERFACE);
+	CMD(add_key, NEW_KEY);
+	CMD(add_beacon, NEW_BEACON);
+	CMD(add_station, NEW_STATION);
+	CMD(add_mpath, NEW_MPATH);
+	CMD(set_mesh_params, SET_MESH_PARAMS);
+	CMD(change_bss, SET_BSS);
+	CMD(auth, AUTHENTICATE);
+	CMD(assoc, ASSOCIATE);
+	CMD(deauth, DEAUTHENTICATE);
+	CMD(disassoc, DISASSOCIATE);
+
+#undef CMD
+	nla_nest_end(msg, nl_cmds);
+
 	return genlmsg_end(msg, hdr);
 
  nla_put_failure:
@@ -247,7 +290,7 @@ static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
 	int start = cb->args[0];
 	struct cfg80211_registered_device *dev;
 
-	mutex_lock(&cfg80211_drv_mutex);
+	mutex_lock(&cfg80211_mutex);
 	list_for_each_entry(dev, &cfg80211_drv_list, list) {
 		if (++idx <= start)
 			continue;
@@ -258,7 +301,7 @@ static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
 			break;
 		}
 	}
-	mutex_unlock(&cfg80211_drv_mutex);
+	mutex_unlock(&cfg80211_mutex);
 
 	cb->args[0] = idx;
 
@@ -323,16 +366,26 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
 	int result = 0, rem_txq_params = 0;
 	struct nlattr *nl_txq_params;
 
-	rdev = cfg80211_get_dev_from_info(info);
-	if (IS_ERR(rdev))
-		return PTR_ERR(rdev);
+	rtnl_lock();
+
+	mutex_lock(&cfg80211_mutex);
+
+	rdev = __cfg80211_drv_from_info(info);
+	if (IS_ERR(rdev)) {
+		result = PTR_ERR(rdev);
+		goto unlock;
+	}
+
+	mutex_lock(&rdev->mtx);
 
-	if (info->attrs[NL80211_ATTR_WIPHY_NAME]) {
+	if (info->attrs[NL80211_ATTR_WIPHY_NAME])
 		result = cfg80211_dev_rename(
 			rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
-		if (result)
-			goto bad_res;
-	}
+
+	mutex_unlock(&cfg80211_mutex);
+
+	if (result)
+		goto bad_res;
 
 	if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
 		struct ieee80211_txq_params txq_params;
@@ -428,7 +481,9 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
 
 
  bad_res:
-	cfg80211_put_dev(rdev);
+	mutex_unlock(&rdev->mtx);
+ unlock:
+	rtnl_unlock();
 	return result;
 }
 
@@ -461,7 +516,7 @@ static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *
 	struct cfg80211_registered_device *dev;
 	struct wireless_dev *wdev;
 
-	mutex_lock(&cfg80211_drv_mutex);
+	mutex_lock(&cfg80211_mutex);
 	list_for_each_entry(dev, &cfg80211_drv_list, list) {
 		if (wp_idx < wp_start) {
 			wp_idx++;
@@ -488,7 +543,7 @@ static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *
 		wp_idx++;
 	}
  out:
-	mutex_unlock(&cfg80211_drv_mutex);
+	mutex_unlock(&cfg80211_mutex);
 
 	cb->args[0] = wp_idx;
 	cb->args[1] = if_idx;
@@ -564,21 +619,31 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
 	enum nl80211_iftype type;
 	struct net_device *dev;
 	u32 _flags, *flags = NULL;
+	bool change = false;
 
 	memset(&params, 0, sizeof(params));
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto unlock_rtnl;
+
 	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)
+		enum nl80211_iftype ntype;
+
+		ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
+		if (type != ntype)
+			change = true;
+		type = ntype;
+		if (type > NL80211_IFTYPE_MAX) {
+			err = -EINVAL;
 			goto unlock;
+		}
 	}
 
 	if (!drv->ops->change_virtual_intf ||
@@ -594,6 +659,7 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
 		}
 		params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
 		params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
+		change = true;
 	}
 
 	if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
@@ -603,20 +669,26 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
 		}
 		err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
 					  &_flags);
-		if (!err)
-			flags = &_flags;
+		if (err)
+			goto unlock;
+
+		flags = &_flags;
+		change = true;
 	}
-	rtnl_lock();
-	err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex,
-					    type, flags, &params);
+
+	if (change)
+		err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex,
+						    type, flags, &params);
+	else
+		err = 0;
 
 	dev = __dev_get_by_index(&init_net, ifindex);
 	WARN_ON(!dev || (!err && dev->ieee80211_ptr->iftype != type));
 
-	rtnl_unlock();
-
  unlock:
 	cfg80211_put_dev(drv);
+ unlock_rtnl:
+	rtnl_unlock();
 	return err;
 }
 
@@ -639,9 +711,13 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
 			return -EINVAL;
 	}
 
+	rtnl_lock();
+
 	drv = cfg80211_get_dev_from_info(info);
-	if (IS_ERR(drv))
-		return PTR_ERR(drv);
+	if (IS_ERR(drv)) {
+		err = PTR_ERR(drv);
+		goto unlock_rtnl;
+	}
 
 	if (!drv->ops->add_virtual_intf ||
 	    !(drv->wiphy.interface_modes & (1 << type))) {
@@ -655,18 +731,17 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
 		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);
+ unlock_rtnl:
+	rtnl_unlock();
 	return err;
 }
 
@@ -676,9 +751,11 @@ static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
 	int ifindex, err;
 	struct net_device *dev;
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto unlock_rtnl;
 	ifindex = dev->ifindex;
 	dev_put(dev);
 
@@ -687,12 +764,12 @@ static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
 		goto out;
 	}
 
-	rtnl_lock();
 	err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex);
-	rtnl_unlock();
 
  out:
 	cfg80211_put_dev(drv);
+ unlock_rtnl:
+	rtnl_unlock();
 	return err;
 }
 
@@ -738,15 +815,17 @@ static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
 	if (info->attrs[NL80211_ATTR_KEY_IDX])
 		key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 
-	if (key_idx > 3)
+	if (key_idx > 5)
 		return -EINVAL;
 
 	if (info->attrs[NL80211_ATTR_MAC])
 		mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto unlock_rtnl;
 
 	if (!drv->ops->get_key) {
 		err = -EOPNOTSUPP;
@@ -774,10 +853,8 @@ static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
 	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;
@@ -795,6 +872,9 @@ static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ unlock_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -804,35 +884,50 @@ static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
 	int err;
 	struct net_device *dev;
 	u8 key_idx;
+	int (*func)(struct wiphy *wiphy, struct net_device *netdev,
+		    u8 key_index);
 
 	if (!info->attrs[NL80211_ATTR_KEY_IDX])
 		return -EINVAL;
 
 	key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 
-	if (key_idx > 3)
+	if (info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]) {
+		if (key_idx < 4 || key_idx > 5)
+			return -EINVAL;
+	} else if (key_idx > 3)
 		return -EINVAL;
 
 	/* currently only support setting default key */
-	if (!info->attrs[NL80211_ATTR_KEY_DEFAULT])
+	if (!info->attrs[NL80211_ATTR_KEY_DEFAULT] &&
+	    !info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT])
 		return -EINVAL;
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto unlock_rtnl;
+
+	if (info->attrs[NL80211_ATTR_KEY_DEFAULT])
+		func = drv->ops->set_default_key;
+	else
+		func = drv->ops->set_default_mgmt_key;
 
-	if (!drv->ops->set_default_key) {
+	if (!func) {
 		err = -EOPNOTSUPP;
 		goto out;
 	}
 
-	rtnl_lock();
-	err = drv->ops->set_default_key(&drv->wiphy, dev, key_idx);
-	rtnl_unlock();
+	err = func(&drv->wiphy, dev, key_idx);
 
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+
+ unlock_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -863,7 +958,7 @@ static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
 	if (info->attrs[NL80211_ATTR_MAC])
 		mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
 
-	if (key_idx > 3)
+	if (key_idx > 5)
 		return -EINVAL;
 
 	/*
@@ -894,26 +989,33 @@ static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
 		if (params.key_len != 13)
 			return -EINVAL;
 		break;
+	case WLAN_CIPHER_SUITE_AES_CMAC:
+		if (params.key_len != 16)
+			return -EINVAL;
+		break;
 	default:
 		return -EINVAL;
 	}
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto unlock_rtnl;
 
 	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);
+ unlock_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -928,28 +1030,32 @@ static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
 	if (info->attrs[NL80211_ATTR_KEY_IDX])
 		key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 
-	if (key_idx > 3)
+	if (key_idx > 5)
 		return -EINVAL;
 
 	if (info->attrs[NL80211_ATTR_MAC])
 		mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto unlock_rtnl;
 
 	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);
+
+ unlock_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -963,9 +1069,16 @@ static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
 	struct beacon_parameters params;
 	int haveinfo = 0;
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto unlock_rtnl;
+
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
 
 	switch (info->genlhdr->cmd) {
 	case NL80211_CMD_NEW_BEACON:
@@ -1026,13 +1139,14 @@ static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
 		goto out;
 	}
 
-	rtnl_lock();
 	err = call(&drv->wiphy, dev, &params);
-	rtnl_unlock();
 
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ unlock_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -1042,22 +1156,29 @@ static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
 	int err;
 	struct net_device *dev;
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto unlock_rtnl;
 
 	if (!drv->ops->del_beacon) {
 		err = -EOPNOTSUPP;
 		goto out;
 	}
 
-	rtnl_lock();
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
 	err = drv->ops->del_beacon(&drv->wiphy, dev);
-	rtnl_unlock();
 
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ unlock_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -1182,6 +1303,12 @@ static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
 
 		nla_nest_end(msg, txrate);
 	}
+	if (sinfo->filled & STATION_INFO_RX_PACKETS)
+		NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
+			    sinfo->rx_packets);
+	if (sinfo->filled & STATION_INFO_TX_PACKETS)
+		NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
+			    sinfo->tx_packets);
 	nla_nest_end(msg, sinfoattr);
 
 	return genlmsg_end(msg, hdr);
@@ -1217,30 +1344,32 @@ static int nl80211_dump_station(struct sk_buff *skb,
 			return -EINVAL;
 	}
 
-	netdev = dev_get_by_index(&init_net, ifidx);
-	if (!netdev)
-		return -ENODEV;
+	rtnl_lock();
+
+	netdev = __dev_get_by_index(&init_net, ifidx);
+	if (!netdev) {
+		err = -ENODEV;
+		goto out_rtnl;
+	}
 
 	dev = cfg80211_get_dev_from_ifindex(ifidx);
 	if (IS_ERR(dev)) {
 		err = PTR_ERR(dev);
-		goto out_put_netdev;
+		goto out_rtnl;
 	}
 
 	if (!dev->ops->dump_station) {
-		err = -ENOSYS;
+		err = -EOPNOTSUPP;
 		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;
+			goto out_err;
 
 		if (nl80211_send_station(skb,
 				NETLINK_CB(cb->skb).pid,
@@ -1256,12 +1385,10 @@ static int nl80211_dump_station(struct sk_buff *skb,
  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);
+ out_rtnl:
+	rtnl_unlock();
 
 	return err;
 }
@@ -1282,19 +1409,18 @@ static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
 
 	mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
 
 	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;
 
@@ -1311,10 +1437,12 @@ static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
 
  out_free:
 	nlmsg_free(msg);
-
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -1382,9 +1510,11 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
 		params.plink_action =
 		    nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
 
 	err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, &params.vlan);
 	if (err)
@@ -1395,15 +1525,16 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
 		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);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -1445,9 +1576,11 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
 				&params.station_flags))
 		return -EINVAL;
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
 
 	err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, &params.vlan);
 	if (err)
@@ -1458,15 +1591,21 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
 		goto out;
 	}
 
-	rtnl_lock();
+	if (!netif_running(dev)) {
+		err = -ENETDOWN;
+		goto out;
+	}
+
 	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);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -1480,22 +1619,25 @@ static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
 	if (info->attrs[NL80211_ATTR_MAC])
 		mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
 
 	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);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -1576,22 +1718,29 @@ static int nl80211_dump_mpath(struct sk_buff *skb,
 			return -EINVAL;
 	}
 
-	netdev = dev_get_by_index(&init_net, ifidx);
-	if (!netdev)
-		return -ENODEV;
+	rtnl_lock();
+
+	netdev = __dev_get_by_index(&init_net, ifidx);
+	if (!netdev) {
+		err = -ENODEV;
+		goto out_rtnl;
+	}
 
 	dev = cfg80211_get_dev_from_ifindex(ifidx);
 	if (IS_ERR(dev)) {
 		err = PTR_ERR(dev);
-		goto out_put_netdev;
+		goto out_rtnl;
 	}
 
 	if (!dev->ops->dump_mpath) {
-		err = -ENOSYS;
+		err = -EOPNOTSUPP;
 		goto out_err;
 	}
 
-	rtnl_lock();
+	if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
 
 	while (1) {
 		err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
@@ -1599,7 +1748,7 @@ static int nl80211_dump_mpath(struct sk_buff *skb,
 		if (err == -ENOENT)
 			break;
 		if (err)
-			goto out_err_rtnl;
+			goto out_err;
 
 		if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
 				       cb->nlh->nlmsg_seq, NLM_F_MULTI,
@@ -1614,12 +1763,10 @@ static int nl80211_dump_mpath(struct sk_buff *skb,
  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);
+ out_rtnl:
+	rtnl_unlock();
 
 	return err;
 }
@@ -1641,19 +1788,23 @@ static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
 
 	dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
 
 	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 (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
 
+	err = drv->ops->get_mpath(&drv->wiphy, dev, dst, next_hop, &pinfo);
 	if (err)
 		goto out;
 
@@ -1670,10 +1821,12 @@ static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
 
  out_free:
 	nlmsg_free(msg);
-
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -1694,22 +1847,35 @@ static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
 	dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
 	next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
 
 	if (!drv->ops->change_mpath) {
 		err = -EOPNOTSUPP;
 		goto out;
 	}
 
-	rtnl_lock();
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	if (!netif_running(dev)) {
+		err = -ENETDOWN;
+		goto out;
+	}
+
 	err = drv->ops->change_mpath(&drv->wiphy, dev, dst, next_hop);
-	rtnl_unlock();
 
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
@@ -1729,22 +1895,35 @@ static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
 	dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
 	next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
 
 	if (!drv->ops->add_mpath) {
 		err = -EOPNOTSUPP;
 		goto out;
 	}
 
-	rtnl_lock();
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	if (!netif_running(dev)) {
+		err = -ENETDOWN;
+		goto out;
+	}
+
 	err = drv->ops->add_mpath(&drv->wiphy, dev, dst, next_hop);
-	rtnl_unlock();
 
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -1758,22 +1937,25 @@ static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
 	if (info->attrs[NL80211_ATTR_MAC])
 		dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
 
 	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);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -1806,22 +1988,30 @@ static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
 			nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
 	}
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
 
 	if (!drv->ops->change_bss) {
 		err = -EOPNOTSUPP;
 		goto out;
 	}
 
-	rtnl_lock();
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
 	err = drv->ops->change_bss(&drv->wiphy, dev, &params);
-	rtnl_unlock();
 
  out:
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -1876,6 +2066,19 @@ static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
 	int r;
 	char *data = NULL;
 
+	/*
+	 * You should only get this when cfg80211 hasn't yet initialized
+	 * completely when built-in to the kernel right between the time
+	 * window between nl80211_init() and regulatory_init(), if that is
+	 * even possible.
+	 */
+	mutex_lock(&cfg80211_mutex);
+	if (unlikely(!cfg80211_regdomain)) {
+		mutex_unlock(&cfg80211_mutex);
+		return -EINPROGRESS;
+	}
+	mutex_unlock(&cfg80211_mutex);
+
 	if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
 		return -EINVAL;
 
@@ -1886,9 +2089,9 @@ static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
 	if (is_world_regdom(data))
 		return -EINVAL;
 #endif
-	mutex_lock(&cfg80211_drv_mutex);
-	r = __regulatory_hint(NULL, REGDOM_SET_BY_USER, data, 0, ENVIRON_ANY);
-	mutex_unlock(&cfg80211_drv_mutex);
+
+	r = regulatory_hint_user(data);
+
 	return r;
 }
 
@@ -1903,15 +2106,20 @@ static int nl80211_get_mesh_params(struct sk_buff *skb,
 	struct nlattr *pinfoattr;
 	struct sk_buff *msg;
 
+	rtnl_lock();
+
 	/* Look up our device */
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
+
+	if (!drv->ops->get_mesh_params) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
 
 	/* Get the mesh params */
-	rtnl_lock();
 	err = drv->ops->get_mesh_params(&drv->wiphy, dev, &cur_params);
-	rtnl_unlock();
 	if (err)
 		goto out;
 
@@ -1960,13 +2168,16 @@ static int nl80211_get_mesh_params(struct sk_buff *skb,
 	err = genlmsg_unicast(msg, info->snd_pid);
 	goto out;
 
-nla_put_failure:
+ nla_put_failure:
 	genlmsg_cancel(msg, hdr);
 	err = -EMSGSIZE;
-out:
+ out:
 	/* Cleanup */
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
@@ -2013,9 +2224,16 @@ static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
 			parent_attr, nl80211_meshconf_params_policy))
 		return -EINVAL;
 
+	rtnl_lock();
+
 	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
 	if (err)
-		return err;
+		goto out_rtnl;
+
+	if (!drv->ops->set_mesh_params) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
 
 	/* This makes sure that there aren't more than 32 mesh config
 	 * parameters (otherwise our bitfield scheme would not work.) */
@@ -2057,18 +2275,95 @@ static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
 			nla_get_u16);
 
 	/* Apply changes */
-	rtnl_lock();
 	err = drv->ops->set_mesh_params(&drv->wiphy, dev, &cfg, mask);
-	rtnl_unlock();
 
+ out:
 	/* cleanup */
 	cfg80211_put_dev(drv);
 	dev_put(dev);
+ out_rtnl:
+	rtnl_unlock();
+
 	return err;
 }
 
 #undef FILL_IN_MESH_PARAM_IF_SET
 
+static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
+{
+	struct sk_buff *msg;
+	void *hdr = NULL;
+	struct nlattr *nl_reg_rules;
+	unsigned int i;
+	int err = -EINVAL;
+
+	mutex_lock(&cfg80211_mutex);
+
+	if (!cfg80211_regdomain)
+		goto out;
+
+	msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+	if (!msg) {
+		err = -ENOBUFS;
+		goto out;
+	}
+
+	hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
+			     NL80211_CMD_GET_REG);
+	if (!hdr)
+		goto nla_put_failure;
+
+	NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
+		cfg80211_regdomain->alpha2);
+
+	nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
+	if (!nl_reg_rules)
+		goto nla_put_failure;
+
+	for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
+		struct nlattr *nl_reg_rule;
+		const struct ieee80211_reg_rule *reg_rule;
+		const struct ieee80211_freq_range *freq_range;
+		const struct ieee80211_power_rule *power_rule;
+
+		reg_rule = &cfg80211_regdomain->reg_rules[i];
+		freq_range = &reg_rule->freq_range;
+		power_rule = &reg_rule->power_rule;
+
+		nl_reg_rule = nla_nest_start(msg, i);
+		if (!nl_reg_rule)
+			goto nla_put_failure;
+
+		NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
+			reg_rule->flags);
+		NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
+			freq_range->start_freq_khz);
+		NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
+			freq_range->end_freq_khz);
+		NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
+			freq_range->max_bandwidth_khz);
+		NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
+			power_rule->max_antenna_gain);
+		NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
+			power_rule->max_eirp);
+
+		nla_nest_end(msg, nl_reg_rule);
+	}
+
+	nla_nest_end(msg, nl_reg_rules);
+
+	genlmsg_end(msg, hdr);
+	err = genlmsg_unicast(msg, info->snd_pid);
+	goto out;
+
+nla_put_failure:
+	genlmsg_cancel(msg, hdr);
+	err = -EMSGSIZE;
+out:
+	mutex_unlock(&cfg80211_mutex);
+	return err;
+}
+
 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
 {
 	struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
@@ -2124,9 +2419,9 @@ static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
 
 	BUG_ON(rule_idx != num_rules);
 
-	mutex_lock(&cfg80211_drv_mutex);
+	mutex_lock(&cfg80211_mutex);
 	r = set_regdom(rd);
-	mutex_unlock(&cfg80211_drv_mutex);
+	mutex_unlock(&cfg80211_mutex);
 	return r;
 
  bad_reg:
@@ -2134,6 +2429,553 @@ static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
 	return -EINVAL;
 }
 
+static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	struct net_device *dev;
+	struct cfg80211_scan_request *request;
+	struct cfg80211_ssid *ssid;
+	struct ieee80211_channel *channel;
+	struct nlattr *attr;
+	struct wiphy *wiphy;
+	int err, tmp, n_ssids = 0, n_channels = 0, i;
+	enum ieee80211_band band;
+	size_t ie_len;
+
+	rtnl_lock();
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		goto out_rtnl;
+
+	wiphy = &drv->wiphy;
+
+	if (!drv->ops->scan) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	if (!netif_running(dev)) {
+		err = -ENETDOWN;
+		goto out;
+	}
+
+	if (drv->scan_req) {
+		err = -EBUSY;
+		goto out;
+	}
+
+	if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
+		nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp)
+			n_channels++;
+		if (!n_channels) {
+			err = -EINVAL;
+			goto out;
+		}
+	} else {
+		for (band = 0; band < IEEE80211_NUM_BANDS; band++)
+			if (wiphy->bands[band])
+				n_channels += wiphy->bands[band]->n_channels;
+	}
+
+	if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
+		nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
+			n_ssids++;
+
+	if (n_ssids > wiphy->max_scan_ssids) {
+		err = -EINVAL;
+		goto out;
+	}
+
+	if (info->attrs[NL80211_ATTR_IE])
+		ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
+	else
+		ie_len = 0;
+
+	request = kzalloc(sizeof(*request)
+			+ sizeof(*ssid) * n_ssids
+			+ sizeof(channel) * n_channels
+			+ ie_len, GFP_KERNEL);
+	if (!request) {
+		err = -ENOMEM;
+		goto out;
+	}
+
+	request->channels = (void *)((char *)request + sizeof(*request));
+	request->n_channels = n_channels;
+	if (n_ssids)
+		request->ssids = (void *)(request->channels + n_channels);
+	request->n_ssids = n_ssids;
+	if (ie_len) {
+		if (request->ssids)
+			request->ie = (void *)(request->ssids + n_ssids);
+		else
+			request->ie = (void *)(request->channels + n_channels);
+	}
+
+	if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
+		/* user specified, bail out if channel not found */
+		request->n_channels = n_channels;
+		i = 0;
+		nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
+			request->channels[i] = ieee80211_get_channel(wiphy, nla_get_u32(attr));
+			if (!request->channels[i]) {
+				err = -EINVAL;
+				goto out_free;
+			}
+			i++;
+		}
+	} else {
+		/* all channels */
+		i = 0;
+		for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+			int j;
+			if (!wiphy->bands[band])
+				continue;
+			for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
+				request->channels[i] = &wiphy->bands[band]->channels[j];
+				i++;
+			}
+		}
+	}
+
+	i = 0;
+	if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
+		nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
+			if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) {
+				err = -EINVAL;
+				goto out_free;
+			}
+			memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
+			request->ssids[i].ssid_len = nla_len(attr);
+			i++;
+		}
+	}
+
+	if (info->attrs[NL80211_ATTR_IE]) {
+		request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
+		memcpy(request->ie, nla_data(info->attrs[NL80211_ATTR_IE]),
+		       request->ie_len);
+	}
+
+	request->ifidx = dev->ifindex;
+	request->wiphy = &drv->wiphy;
+
+	drv->scan_req = request;
+	err = drv->ops->scan(&drv->wiphy, dev, request);
+
+ out_free:
+	if (err) {
+		drv->scan_req = NULL;
+		kfree(request);
+	}
+ out:
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+ out_rtnl:
+	rtnl_unlock();
+
+	return err;
+}
+
+static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
+			    struct cfg80211_registered_device *rdev,
+			    struct net_device *dev,
+			    struct cfg80211_bss *res)
+{
+	void *hdr;
+	struct nlattr *bss;
+
+	hdr = nl80211hdr_put(msg, pid, seq, flags,
+			     NL80211_CMD_NEW_SCAN_RESULTS);
+	if (!hdr)
+		return -1;
+
+	NLA_PUT_U32(msg, NL80211_ATTR_SCAN_GENERATION,
+		    rdev->bss_generation);
+	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
+
+	bss = nla_nest_start(msg, NL80211_ATTR_BSS);
+	if (!bss)
+		goto nla_put_failure;
+	if (!is_zero_ether_addr(res->bssid))
+		NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
+	if (res->information_elements && res->len_information_elements)
+		NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
+			res->len_information_elements,
+			res->information_elements);
+	if (res->tsf)
+		NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
+	if (res->beacon_interval)
+		NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
+	NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
+	NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
+
+	switch (rdev->wiphy.signal_type) {
+	case CFG80211_SIGNAL_TYPE_MBM:
+		NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
+		break;
+	case CFG80211_SIGNAL_TYPE_UNSPEC:
+		NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
+		break;
+	default:
+		break;
+	}
+
+	nla_nest_end(msg, bss);
+
+	return genlmsg_end(msg, hdr);
+
+ nla_put_failure:
+	genlmsg_cancel(msg, hdr);
+	return -EMSGSIZE;
+}
+
+static int nl80211_dump_scan(struct sk_buff *skb,
+			     struct netlink_callback *cb)
+{
+	struct cfg80211_registered_device *dev;
+	struct net_device *netdev;
+	struct cfg80211_internal_bss *scan;
+	int ifidx = cb->args[0];
+	int start = cb->args[1], idx = 0;
+	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;
+		cb->args[0] = ifidx;
+	}
+
+	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;
+	}
+
+	spin_lock_bh(&dev->bss_lock);
+	cfg80211_bss_expire(dev);
+
+	list_for_each_entry(scan, &dev->bss_list, list) {
+		if (++idx <= start)
+			continue;
+		if (nl80211_send_bss(skb,
+				NETLINK_CB(cb->skb).pid,
+				cb->nlh->nlmsg_seq, NLM_F_MULTI,
+				dev, netdev, &scan->pub) < 0) {
+			idx--;
+			goto out;
+		}
+	}
+
+ out:
+	spin_unlock_bh(&dev->bss_lock);
+
+	cb->args[1] = idx;
+	err = skb->len;
+	cfg80211_put_dev(dev);
+ out_put_netdev:
+	dev_put(netdev);
+
+	return err;
+}
+
+static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
+{
+	return auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM ||
+		auth_type == NL80211_AUTHTYPE_SHARED_KEY ||
+		auth_type == NL80211_AUTHTYPE_FT ||
+		auth_type == NL80211_AUTHTYPE_NETWORK_EAP;
+}
+
+static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	struct net_device *dev;
+	struct cfg80211_auth_request req;
+	struct wiphy *wiphy;
+	int err;
+
+	rtnl_lock();
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		goto unlock_rtnl;
+
+	if (!drv->ops->auth) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	if (!netif_running(dev)) {
+		err = -ENETDOWN;
+		goto out;
+	}
+
+	if (!info->attrs[NL80211_ATTR_MAC]) {
+		err = -EINVAL;
+		goto out;
+	}
+
+	wiphy = &drv->wiphy;
+	memset(&req, 0, sizeof(req));
+
+	req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+	if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
+		req.chan = ieee80211_get_channel(
+			wiphy,
+			nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
+		if (!req.chan) {
+			err = -EINVAL;
+			goto out;
+		}
+	}
+
+	if (info->attrs[NL80211_ATTR_SSID]) {
+		req.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
+		req.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
+	}
+
+	if (info->attrs[NL80211_ATTR_IE]) {
+		req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
+		req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
+	}
+
+	if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
+		req.auth_type =
+			nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
+		if (!nl80211_valid_auth_type(req.auth_type)) {
+			err = -EINVAL;
+			goto out;
+		}
+	}
+
+	err = drv->ops->auth(&drv->wiphy, dev, &req);
+
+out:
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+unlock_rtnl:
+	rtnl_unlock();
+	return err;
+}
+
+static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	struct net_device *dev;
+	struct cfg80211_assoc_request req;
+	struct wiphy *wiphy;
+	int err;
+
+	rtnl_lock();
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		goto unlock_rtnl;
+
+	if (!drv->ops->assoc) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	if (!netif_running(dev)) {
+		err = -ENETDOWN;
+		goto out;
+	}
+
+	if (!info->attrs[NL80211_ATTR_MAC] ||
+	    !info->attrs[NL80211_ATTR_SSID]) {
+		err = -EINVAL;
+		goto out;
+	}
+
+	wiphy = &drv->wiphy;
+	memset(&req, 0, sizeof(req));
+
+	req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+	if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
+		req.chan = ieee80211_get_channel(
+			wiphy,
+			nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
+		if (!req.chan) {
+			err = -EINVAL;
+			goto out;
+		}
+	}
+
+	req.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
+	req.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
+
+	if (info->attrs[NL80211_ATTR_IE]) {
+		req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
+		req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
+	}
+
+	err = drv->ops->assoc(&drv->wiphy, dev, &req);
+
+out:
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+unlock_rtnl:
+	rtnl_unlock();
+	return err;
+}
+
+static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	struct net_device *dev;
+	struct cfg80211_deauth_request req;
+	struct wiphy *wiphy;
+	int err;
+
+	rtnl_lock();
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		goto unlock_rtnl;
+
+	if (!drv->ops->deauth) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	if (!netif_running(dev)) {
+		err = -ENETDOWN;
+		goto out;
+	}
+
+	if (!info->attrs[NL80211_ATTR_MAC]) {
+		err = -EINVAL;
+		goto out;
+	}
+
+	wiphy = &drv->wiphy;
+	memset(&req, 0, sizeof(req));
+
+	req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+	if (info->attrs[NL80211_ATTR_REASON_CODE]) {
+		req.reason_code =
+			nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
+		if (req.reason_code == 0) {
+			/* Reason Code 0 is reserved */
+			err = -EINVAL;
+			goto out;
+		}
+	}
+
+	if (info->attrs[NL80211_ATTR_IE]) {
+		req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
+		req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
+	}
+
+	err = drv->ops->deauth(&drv->wiphy, dev, &req);
+
+out:
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+unlock_rtnl:
+	rtnl_unlock();
+	return err;
+}
+
+static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *drv;
+	struct net_device *dev;
+	struct cfg80211_disassoc_request req;
+	struct wiphy *wiphy;
+	int err;
+
+	rtnl_lock();
+
+	err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+	if (err)
+		goto unlock_rtnl;
+
+	if (!drv->ops->disassoc) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
+		err = -EOPNOTSUPP;
+		goto out;
+	}
+
+	if (!netif_running(dev)) {
+		err = -ENETDOWN;
+		goto out;
+	}
+
+	if (!info->attrs[NL80211_ATTR_MAC]) {
+		err = -EINVAL;
+		goto out;
+	}
+
+	wiphy = &drv->wiphy;
+	memset(&req, 0, sizeof(req));
+
+	req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+	if (info->attrs[NL80211_ATTR_REASON_CODE]) {
+		req.reason_code =
+			nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
+		if (req.reason_code == 0) {
+			/* Reason Code 0 is reserved */
+			err = -EINVAL;
+			goto out;
+		}
+	}
+
+	if (info->attrs[NL80211_ATTR_IE]) {
+		req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
+		req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
+	}
+
+	err = drv->ops->disassoc(&drv->wiphy, dev, &req);
+
+out:
+	cfg80211_put_dev(drv);
+	dev_put(dev);
+unlock_rtnl:
+	rtnl_unlock();
+	return err;
+}
+
 static struct genl_ops nl80211_ops[] = {
 	{
 		.cmd = NL80211_CMD_GET_WIPHY,
@@ -2220,7 +3062,6 @@ static struct genl_ops nl80211_ops[] = {
 		.doit = nl80211_get_station,
 		.dumpit = nl80211_dump_station,
 		.policy = nl80211_policy,
-		.flags = GENL_ADMIN_PERM,
 	},
 	{
 		.cmd = NL80211_CMD_SET_STATION,
@@ -2272,6 +3113,12 @@ static struct genl_ops nl80211_ops[] = {
 		.flags = GENL_ADMIN_PERM,
 	},
 	{
+		.cmd = NL80211_CMD_GET_REG,
+		.doit = nl80211_get_reg,
+		.policy = nl80211_policy,
+		/* can be retrieved by unprivileged users */
+	},
+	{
 		.cmd = NL80211_CMD_SET_REG,
 		.doit = nl80211_set_reg,
 		.policy = nl80211_policy,
@@ -2295,12 +3142,56 @@ static struct genl_ops nl80211_ops[] = {
 		.policy = nl80211_policy,
 		.flags = GENL_ADMIN_PERM,
 	},
+	{
+		.cmd = NL80211_CMD_TRIGGER_SCAN,
+		.doit = nl80211_trigger_scan,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_GET_SCAN,
+		.policy = nl80211_policy,
+		.dumpit = nl80211_dump_scan,
+	},
+	{
+		.cmd = NL80211_CMD_AUTHENTICATE,
+		.doit = nl80211_authenticate,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_ASSOCIATE,
+		.doit = nl80211_associate,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_DEAUTHENTICATE,
+		.doit = nl80211_deauthenticate,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+	{
+		.cmd = NL80211_CMD_DISASSOCIATE,
+		.doit = nl80211_disassociate,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+	},
+};
+static struct genl_multicast_group nl80211_mlme_mcgrp = {
+	.name = "mlme",
 };
 
 /* multicast groups */
 static struct genl_multicast_group nl80211_config_mcgrp = {
 	.name = "config",
 };
+static struct genl_multicast_group nl80211_scan_mcgrp = {
+	.name = "scan",
+};
+static struct genl_multicast_group nl80211_regulatory_mcgrp = {
+	.name = "regulatory",
+};
 
 /* notification functions */
 
@@ -2320,6 +3211,186 @@ void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
 	genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL);
 }
 
+static int nl80211_send_scan_donemsg(struct sk_buff *msg,
+				    struct cfg80211_registered_device *rdev,
+				    struct net_device *netdev,
+				    u32 pid, u32 seq, int flags,
+				    u32 cmd)
+{
+	void *hdr;
+
+	hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
+	if (!hdr)
+		return -1;
+
+	NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
+	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
+
+	/* XXX: we should probably bounce back the request? */
+
+	return genlmsg_end(msg, hdr);
+
+ nla_put_failure:
+	genlmsg_cancel(msg, hdr);
+	return -EMSGSIZE;
+}
+
+void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
+			    struct net_device *netdev)
+{
+	struct sk_buff *msg;
+
+	msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+	if (!msg)
+		return;
+
+	if (nl80211_send_scan_donemsg(msg, rdev, netdev, 0, 0, 0,
+				      NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
+		nlmsg_free(msg);
+		return;
+	}
+
+	genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL);
+}
+
+void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
+			       struct net_device *netdev)
+{
+	struct sk_buff *msg;
+
+	msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+	if (!msg)
+		return;
+
+	if (nl80211_send_scan_donemsg(msg, rdev, netdev, 0, 0, 0,
+				      NL80211_CMD_SCAN_ABORTED) < 0) {
+		nlmsg_free(msg);
+		return;
+	}
+
+	genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL);
+}
+
+/*
+ * This can happen on global regulatory changes or device specific settings
+ * based on custom world regulatory domains.
+ */
+void nl80211_send_reg_change_event(struct regulatory_request *request)
+{
+	struct sk_buff *msg;
+	void *hdr;
+
+	msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+	if (!msg)
+		return;
+
+	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
+	if (!hdr) {
+		nlmsg_free(msg);
+		return;
+	}
+
+	/* Userspace can always count this one always being set */
+	NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
+
+	if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
+		NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
+			   NL80211_REGDOM_TYPE_WORLD);
+	else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
+		NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
+			   NL80211_REGDOM_TYPE_CUSTOM_WORLD);
+	else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
+		 request->intersect)
+		NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
+			   NL80211_REGDOM_TYPE_INTERSECTION);
+	else {
+		NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
+			   NL80211_REGDOM_TYPE_COUNTRY);
+		NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
+	}
+
+	if (wiphy_idx_valid(request->wiphy_idx))
+		NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
+
+	if (genlmsg_end(msg, hdr) < 0) {
+		nlmsg_free(msg);
+		return;
+	}
+
+	genlmsg_multicast(msg, 0, nl80211_regulatory_mcgrp.id, GFP_KERNEL);
+
+	return;
+
+nla_put_failure:
+	genlmsg_cancel(msg, hdr);
+	nlmsg_free(msg);
+}
+
+static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
+				    struct net_device *netdev,
+				    const u8 *buf, size_t len,
+				    enum nl80211_commands cmd)
+{
+	struct sk_buff *msg;
+	void *hdr;
+
+	msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+	if (!msg)
+		return;
+
+	hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
+	if (!hdr) {
+		nlmsg_free(msg);
+		return;
+	}
+
+	NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
+	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
+	NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
+
+	if (genlmsg_end(msg, hdr) < 0) {
+		nlmsg_free(msg);
+		return;
+	}
+
+	genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_KERNEL);
+	return;
+
+ nla_put_failure:
+	genlmsg_cancel(msg, hdr);
+	nlmsg_free(msg);
+}
+
+void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
+			  struct net_device *netdev, const u8 *buf, size_t len)
+{
+	nl80211_send_mlme_event(rdev, netdev, buf, len,
+				NL80211_CMD_AUTHENTICATE);
+}
+
+void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
+			   struct net_device *netdev, const u8 *buf,
+			   size_t len)
+{
+	nl80211_send_mlme_event(rdev, netdev, buf, len, NL80211_CMD_ASSOCIATE);
+}
+
+void nl80211_send_rx_deauth(struct cfg80211_registered_device *rdev,
+			    struct net_device *netdev, const u8 *buf,
+			    size_t len)
+{
+	nl80211_send_mlme_event(rdev, netdev, buf, len,
+				NL80211_CMD_DEAUTHENTICATE);
+}
+
+void nl80211_send_rx_disassoc(struct cfg80211_registered_device *rdev,
+			      struct net_device *netdev, const u8 *buf,
+			      size_t len)
+{
+	nl80211_send_mlme_event(rdev, netdev, buf, len,
+				NL80211_CMD_DISASSOCIATE);
+}
+
 /* initialisation/exit functions */
 
 int nl80211_init(void)
@@ -2340,6 +3411,18 @@ int nl80211_init(void)
 	if (err)
 		goto err_out;
 
+	err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
+	if (err)
+		goto err_out;
+
+	err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
+	if (err)
+		goto err_out;
+
+	err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
+	if (err)
+		goto err_out;
+
 	return 0;
  err_out:
 	genl_unregister_family(&nl80211_fam);
diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h
index f3ea5c029aee..b77af4ab80be 100644
--- a/net/wireless/nl80211.h
+++ b/net/wireless/nl80211.h
@@ -3,22 +3,25 @@
 
 #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 */
+extern void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
+				   struct net_device *netdev);
+extern void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
+				      struct net_device *netdev);
+extern void nl80211_send_reg_change_event(struct regulatory_request *request);
+extern void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
+				 struct net_device *netdev,
+				 const u8 *buf, size_t len);
+extern void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
+				  struct net_device *netdev,
+				  const u8 *buf, size_t len);
+extern void nl80211_send_rx_deauth(struct cfg80211_registered_device *rdev,
+				   struct net_device *netdev,
+				   const u8 *buf, size_t len);
+extern void nl80211_send_rx_disassoc(struct cfg80211_registered_device *rdev,
+				     struct net_device *netdev,
+				     const u8 *buf, size_t len);
 
 #endif /* __NET_WIRELESS_NL80211_H */
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index bd0a16c3de5e..6327e1617acb 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -41,38 +41,7 @@
 #include <net/cfg80211.h>
 #include "core.h"
 #include "reg.h"
-
-/**
- * struct regulatory_request - receipt of last regulatory request
- *
- * @wiphy: this is set if this request's initiator is
- * 	%REGDOM_SET_BY_COUNTRY_IE or %REGDOM_SET_BY_DRIVER. This
- * 	can be used by the wireless core to deal with conflicts
- * 	and potentially inform users of which devices specifically
- * 	cased the conflicts.
- * @initiator: indicates who sent this request, could be any of
- * 	of those set in reg_set_by, %REGDOM_SET_BY_*
- * @alpha2: the ISO / IEC 3166 alpha2 country code of the requested
- * 	regulatory domain. We have a few special codes:
- * 	00 - World regulatory domain
- * 	99 - built by driver but a specific alpha2 cannot be determined
- * 	98 - result of an intersection between two regulatory domains
- * @intersect: indicates whether the wireless core should intersect
- * 	the requested regulatory domain with the presently set regulatory
- * 	domain.
- * @country_ie_checksum: checksum of the last processed and accepted
- * 	country IE
- * @country_ie_env: lets us know if the AP is telling us we are outdoor,
- * 	indoor, or if it doesn't matter
- */
-struct regulatory_request {
-	struct wiphy *wiphy;
-	enum reg_set_by initiator;
-	char alpha2[2];
-	bool intersect;
-	u32 country_ie_checksum;
-	enum environment_cap country_ie_env;
-};
+#include "nl80211.h"
 
 /* Receipt of information from last regulatory request */
 static struct regulatory_request *last_request;
@@ -86,22 +55,63 @@ static u32 supported_bandwidths[] = {
 	MHZ_TO_KHZ(20),
 };
 
-/* Central wireless core regulatory domains, we only need two,
+/*
+ * 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;
+ * information to give us an alpha2
+ */
+const struct ieee80211_regdomain *cfg80211_regdomain;
 
-/* We use this as a place for the rd structure built from the
+/*
+ * We use this as a place for the rd structure built from the
  * last parsed country IE to rest until CRDA gets back to us with
- * what it thinks should apply for the same country */
+ * what it thinks should apply for the same country
+ */
 static const struct ieee80211_regdomain *country_ie_regdomain;
 
+/* Used to queue up regulatory hints */
+static LIST_HEAD(reg_requests_list);
+static spinlock_t reg_requests_lock;
+
+/* Used to queue up beacon hints for review */
+static LIST_HEAD(reg_pending_beacons);
+static spinlock_t reg_pending_beacons_lock;
+
+/* Used to keep track of processed beacon hints */
+static LIST_HEAD(reg_beacon_list);
+
+struct reg_beacon {
+	struct list_head list;
+	struct ieee80211_channel chan;
+};
+
 /* 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,
+	.n_reg_rules = 5,
 	.alpha2 =  "00",
 	.reg_rules = {
-		REG_RULE(2412-10, 2462+10, 40, 6, 20,
+		/* IEEE 802.11b/g, channels 1..11 */
+		REG_RULE(2412-10, 2462+10, 40, 6, 20, 0),
+		/* IEEE 802.11b/g, channels 12..13. No HT40
+		 * channel fits here. */
+		REG_RULE(2467-10, 2472+10, 20, 6, 20,
+			NL80211_RRF_PASSIVE_SCAN |
+			NL80211_RRF_NO_IBSS),
+		/* IEEE 802.11 channel 14 - Only JP enables
+		 * this and for 802.11b only */
+		REG_RULE(2484-10, 2484+10, 20, 6, 20,
+			NL80211_RRF_PASSIVE_SCAN |
+			NL80211_RRF_NO_IBSS |
+			NL80211_RRF_NO_OFDM),
+		/* IEEE 802.11a, channel 36..48 */
+		REG_RULE(5180-10, 5240+10, 40, 6, 20,
+                        NL80211_RRF_PASSIVE_SCAN |
+                        NL80211_RRF_NO_IBSS),
+
+		/* NB: 5260 MHz - 5700 MHz requies DFS */
+
+		/* IEEE 802.11a, channel 149..165 */
+		REG_RULE(5745-10, 5825+10, 40, 6, 20,
 			NL80211_RRF_PASSIVE_SCAN |
 			NL80211_RRF_NO_IBSS),
 	}
@@ -112,12 +122,19 @@ static const struct ieee80211_regdomain *cfg80211_world_regdom =
 
 #ifdef CONFIG_WIRELESS_OLD_REGULATORY
 static char *ieee80211_regdom = "US";
+#else
+static char *ieee80211_regdom = "00";
+#endif
+
 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.
+#ifdef CONFIG_WIRELESS_OLD_REGULATORY
+/*
+ * We assume 40 MHz bandwidth for the old regulatory work.
  * We make emphasis we are using the exact same frequencies
- * as before */
+ * as before
+ */
 
 static const struct ieee80211_regdomain us_regdom = {
 	.n_reg_rules = 6,
@@ -156,8 +173,10 @@ static const struct ieee80211_regdomain jp_regdom = {
 
 static const struct ieee80211_regdomain eu_regdom = {
 	.n_reg_rules = 6,
-	/* This alpha2 is bogus, we leave it here just for stupid
-	 * backward compatibility */
+	/*
+	 * This alpha2 is bogus, we leave it here just for stupid
+	 * backward compatibility
+	 */
 	.alpha2 =  "EU",
 	.reg_rules = {
 		/* IEEE 802.11b/g, channels 1..13 */
@@ -226,8 +245,10 @@ static void reset_regdomains(void)
 	cfg80211_regdomain = NULL;
 }
 
-/* Dynamic world regulatory domain requested by the wireless
- * core upon initialization */
+/*
+ * Dynamic world regulatory domain requested by the wireless
+ * core upon initialization
+ */
 static void update_world_regdomain(const struct ieee80211_regdomain *rd)
 {
 	BUG_ON(!last_request);
@@ -268,8 +289,10 @@ 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 */
+	/*
+	 * 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;
@@ -279,9 +302,11 @@ static bool is_intersected_alpha2(const char *alpha2)
 {
 	if (!alpha2)
 		return false;
-	/* Special case where regulatory domain is the
+	/*
+	 * Special case where regulatory domain is the
 	 * result of an intersection between two regulatory domain
-	 * structures */
+	 * structures
+	 */
 	if (alpha2[0] == '9' && alpha2[1] == '8')
 		return true;
 	return false;
@@ -306,8 +331,10 @@ static bool alpha2_equal(const char *alpha2_x, const char *alpha2_y)
 	return false;
 }
 
-static bool regdom_changed(const char *alpha2)
+static bool regdom_changes(const char *alpha2)
 {
+	assert_cfg80211_lock();
+
 	if (!cfg80211_regdomain)
 		return true;
 	if (alpha2_equal(cfg80211_regdomain->alpha2, alpha2))
@@ -334,8 +361,10 @@ static bool country_ie_integrity_changes(u32 checksum)
 	return false;
 }
 
-/* This lets us keep regulatory code which is updated on a regulatory
- * basis in userspace. */
+/*
+ * 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=";
@@ -447,10 +476,12 @@ static bool freq_in_rule_band(const struct ieee80211_freq_range *freq_range,
 #undef ONE_GHZ_IN_KHZ
 }
 
-/* Converts a country IE to a regulatory domain. A regulatory domain
+/*
+ * Converts a country IE to a regulatory domain. A regulatory domain
  * structure has a lot of information which the IE doesn't yet have,
  * so for the other values we use upper max values as we will intersect
- * with our userspace regulatory agent to get lower bounds. */
+ * with our userspace regulatory agent to get lower bounds.
+ */
 static struct ieee80211_regdomain *country_ie_2_rd(
 				u8 *country_ie,
 				u8 country_ie_len,
@@ -495,9 +526,11 @@ static struct ieee80211_regdomain *country_ie_2_rd(
 
 	*checksum ^= ((flags ^ alpha2[0] ^ alpha2[1]) << 8);
 
-	/* We need to build a reg rule for each triplet, but first we must
+	/*
+	 * We need to build a reg rule for each triplet, but first we must
 	 * calculate the number of reg rules we will need. We will need one
-	 * for each channel subband */
+	 * for each channel subband
+	 */
 	while (country_ie_len >= 3) {
 		int end_channel = 0;
 		struct ieee80211_country_ie_triplet *triplet =
@@ -535,9 +568,11 @@ static struct ieee80211_regdomain *country_ie_2_rd(
 		if (cur_sub_max_channel < cur_channel)
 			return NULL;
 
-		/* Do not allow overlapping channels. Also channels
+		/*
+		 * Do not allow overlapping channels. Also channels
 		 * passed in each subband must be monotonically
-		 * increasing */
+		 * increasing
+		 */
 		if (last_sub_max_channel) {
 			if (cur_channel <= last_sub_max_channel)
 				return NULL;
@@ -545,10 +580,12 @@ static struct ieee80211_regdomain *country_ie_2_rd(
 				return NULL;
 		}
 
-		/* When dot11RegulatoryClassesRequired is supported
+		/*
+		 * When dot11RegulatoryClassesRequired is supported
 		 * we can throw ext triplets as part of this soup,
 		 * for now we don't care when those change as we
-		 * don't support them */
+		 * don't support them
+		 */
 		*checksum ^= ((cur_channel ^ cur_sub_max_channel) << 8) |
 		  ((cur_sub_max_channel ^ cur_sub_max_channel) << 16) |
 		  ((triplet->chans.max_power ^ cur_sub_max_channel) << 24);
@@ -559,8 +596,10 @@ static struct ieee80211_regdomain *country_ie_2_rd(
 		country_ie_len -= 3;
 		num_rules++;
 
-		/* Note: this is not a IEEE requirement but
-		 * simply a memory requirement */
+		/*
+		 * Note: this is not a IEEE requirement but
+		 * simply a memory requirement
+		 */
 		if (num_rules > NL80211_MAX_SUPP_REG_RULES)
 			return NULL;
 	}
@@ -588,8 +627,10 @@ static struct ieee80211_regdomain *country_ie_2_rd(
 		struct ieee80211_freq_range *freq_range = NULL;
 		struct ieee80211_power_rule *power_rule = NULL;
 
-		/* Must parse if dot11RegulatoryClassesRequired is true,
-		 * we don't support this yet */
+		/*
+		 * Must parse if dot11RegulatoryClassesRequired is true,
+		 * we don't support this yet
+		 */
 		if (triplet->ext.reg_extension_id >=
 				IEEE80211_COUNTRY_EXTENSION_ID) {
 			country_ie += 3;
@@ -611,10 +652,12 @@ static struct ieee80211_regdomain *country_ie_2_rd(
 			end_channel =  triplet->chans.first_channel +
 				(4 * (triplet->chans.num_channels - 1));
 
-		/* The +10 is since the regulatory domain expects
+		/*
+		 * The +10 is since the regulatory domain expects
 		 * the actual band edge, not the center of freq for
 		 * its start and end freqs, assuming 20 MHz bandwidth on
-		 * the channels passed */
+		 * the channels passed
+		 */
 		freq_range->start_freq_khz =
 			MHZ_TO_KHZ(ieee80211_channel_to_frequency(
 				triplet->chans.first_channel) - 10);
@@ -622,9 +665,11 @@ static struct ieee80211_regdomain *country_ie_2_rd(
 			MHZ_TO_KHZ(ieee80211_channel_to_frequency(
 				end_channel) + 10);
 
-		/* Large arbitrary values, we intersect later */
-		/* Increment this if we ever support >= 40 MHz channels
-		 * in IEEE 802.11 */
+		/*
+		 * These are large arbitrary values we use to intersect later.
+		 * Increment this if we ever support >= 40 MHz channels
+		 * in IEEE 802.11
+		 */
 		freq_range->max_bandwidth_khz = MHZ_TO_KHZ(40);
 		power_rule->max_antenna_gain = DBI_TO_MBI(100);
 		power_rule->max_eirp = DBM_TO_MBM(100);
@@ -640,8 +685,10 @@ static struct ieee80211_regdomain *country_ie_2_rd(
 }
 
 
-/* Helper for regdom_intersect(), this does the real
- * mathematical intersection fun */
+/*
+ * Helper for regdom_intersect(), this does the real
+ * mathematical intersection fun
+ */
 static int reg_rules_intersect(
 	const struct ieee80211_reg_rule *rule1,
 	const struct ieee80211_reg_rule *rule2,
@@ -719,11 +766,13 @@ static struct ieee80211_regdomain *regdom_intersect(
 	if (!rd1 || !rd2)
 		return NULL;
 
-	/* First we get a count of the rules we'll need, then we actually
+	/*
+	 * First we get a count of the rules we'll need, then we actually
 	 * build them. This is to so we can malloc() and free() a
 	 * regdomain once. The reason we use reg_rules_intersect() here
 	 * is it will return -EINVAL if the rule computed makes no sense.
-	 * All rules that do check out OK are valid. */
+	 * All rules that do check out OK are valid.
+	 */
 
 	for (x = 0; x < rd1->n_reg_rules; x++) {
 		rule1 = &rd1->reg_rules[x];
@@ -751,14 +800,18 @@ static struct ieee80211_regdomain *regdom_intersect(
 		rule1 = &rd1->reg_rules[x];
 		for (y = 0; y < rd2->n_reg_rules; y++) {
 			rule2 = &rd2->reg_rules[y];
-			/* This time around instead of using the stack lets
+			/*
+			 * This time around instead of using the stack lets
 			 * write to the target rule directly saving ourselves
-			 * a memcpy() */
+			 * a memcpy()
+			 */
 			intersected_rule = &rd->reg_rules[rule_idx];
 			r = reg_rules_intersect(rule1, rule2,
 				intersected_rule);
-			/* No need to memset here the intersected rule here as
-			 * we're not using the stack anymore */
+			/*
+			 * No need to memset here the intersected rule here as
+			 * we're not using the stack anymore
+			 */
 			if (r)
 				continue;
 			rule_idx++;
@@ -777,8 +830,10 @@ static struct ieee80211_regdomain *regdom_intersect(
 	return rd;
 }
 
-/* XXX: add support for the rest of enum nl80211_reg_rule_flags, we may
- * want to just have the channel structure use these */
+/*
+ * 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;
@@ -791,48 +846,45 @@ static u32 map_regdom_flags(u32 rd_flags)
 	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 on
- * a given wireless device. If the device has a specific regulatory domain
- * it wants to follow we respect that unless a country IE has been received
- * and processed already.
- *
- * Returns 0 if it was able to find a valid regulatory rule which does
- * apply to the given center_freq otherwise it returns non-zero. It will
- * also return -ERANGE if we determine the given center_freq does not even have
- * a regulatory rule for a frequency range in the center_freq's band. See
- * freq_in_rule_band() for our current definition of a band -- this is purely
- * subjective and right now its 802.11 specific.
- */
-static int freq_reg_info(u32 center_freq, u32 *bandwidth,
-			 const struct ieee80211_reg_rule **reg_rule)
+static int freq_reg_info_regd(struct wiphy *wiphy,
+			      u32 center_freq,
+			      u32 *bandwidth,
+			      const struct ieee80211_reg_rule **reg_rule,
+			      const struct ieee80211_regdomain *custom_regd)
 {
 	int i;
 	bool band_rule_found = false;
+	const struct ieee80211_regdomain *regd;
 	u32 max_bandwidth = 0;
 
-	if (!cfg80211_regdomain)
+	regd = custom_regd ? custom_regd : cfg80211_regdomain;
+
+	/*
+	 * Follow the driver's regulatory domain, if present, unless a country
+	 * IE has been processed or a user wants to help complaince further
+	 */
+	if (last_request->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE &&
+	    last_request->initiator != NL80211_REGDOM_SET_BY_USER &&
+	    wiphy->regd)
+		regd = wiphy->regd;
+
+	if (!regd)
 		return -EINVAL;
 
-	for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
+	for (i = 0; i < regd->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];
+		rr = &regd->reg_rules[i];
 		fr = &rr->freq_range;
 		pr = &rr->power_rule;
 
-		/* We only need to know if one frequency rule was
+		/*
+		 * We only need to know if one frequency rule was
 		 * was in center_freq's band, that's enough, so lets
-		 * not overwrite it once found */
+		 * not overwrite it once found
+		 */
 		if (!band_rule_found)
 			band_rule_found = freq_in_rule_band(fr, center_freq);
 
@@ -850,6 +902,14 @@ static int freq_reg_info(u32 center_freq, u32 *bandwidth,
 
 	return !max_bandwidth;
 }
+EXPORT_SYMBOL(freq_reg_info);
+
+int freq_reg_info(struct wiphy *wiphy, u32 center_freq, u32 *bandwidth,
+			 const struct ieee80211_reg_rule **reg_rule)
+{
+	return freq_reg_info_regd(wiphy, center_freq,
+		bandwidth, reg_rule, NULL);
+}
 
 static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band,
 			   unsigned int chan_idx)
@@ -861,6 +921,11 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band,
 	const struct ieee80211_power_rule *power_rule = NULL;
 	struct ieee80211_supported_band *sband;
 	struct ieee80211_channel *chan;
+	struct wiphy *request_wiphy = NULL;
+
+	assert_cfg80211_lock();
+
+	request_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx);
 
 	sband = wiphy->bands[band];
 	BUG_ON(chan_idx >= sband->n_channels);
@@ -868,11 +933,12 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band,
 
 	flags = chan->orig_flags;
 
-	r = freq_reg_info(MHZ_TO_KHZ(chan->center_freq),
+	r = freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq),
 		&max_bandwidth, &reg_rule);
 
 	if (r) {
-		/* This means no regulatory rule was found in the country IE
+		/*
+		 * This means no regulatory rule was found in the country IE
 		 * with a frequency range on the center_freq's band, since
 		 * IEEE-802.11 allows for a country IE to have a subset of the
 		 * regulatory information provided in a country we ignore
@@ -883,7 +949,8 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band,
 		 * http://tinyurl.com/11d-clarification
 		 */
 		if (r == -ERANGE &&
-		    last_request->initiator == REGDOM_SET_BY_COUNTRY_IE) {
+		    last_request->initiator ==
+		    NL80211_REGDOM_SET_BY_COUNTRY_IE) {
 #ifdef CONFIG_CFG80211_REG_DEBUG
 			printk(KERN_DEBUG "cfg80211: Leaving channel %d MHz "
 				"intact on %s - no rule found in band on "
@@ -891,10 +958,13 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band,
 				chan->center_freq, wiphy_name(wiphy));
 #endif
 		} else {
-		/* In this case we know the country IE has at least one reg rule
-		 * for the band so we respect its band definitions */
+		/*
+		 * In this case we know the country IE has at least one reg rule
+		 * for the band so we respect its band definitions
+		 */
 #ifdef CONFIG_CFG80211_REG_DEBUG
-			if (last_request->initiator == REGDOM_SET_BY_COUNTRY_IE)
+			if (last_request->initiator ==
+			    NL80211_REGDOM_SET_BY_COUNTRY_IE)
 				printk(KERN_DEBUG "cfg80211: Disabling "
 					"channel %d MHz on %s due to "
 					"Country IE\n",
@@ -908,6 +978,24 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band,
 
 	power_rule = &reg_rule->power_rule;
 
+	if (last_request->initiator == NL80211_REGDOM_SET_BY_DRIVER &&
+	    request_wiphy && request_wiphy == wiphy &&
+	    request_wiphy->strict_regulatory) {
+		/*
+		 * This gaurantees the driver's requested regulatory domain
+		 * will always be used as a base for further regulatory
+		 * settings
+		 */
+		chan->flags = chan->orig_flags =
+			map_regdom_flags(reg_rule->flags);
+		chan->max_antenna_gain = chan->orig_mag =
+			(int) MBI_TO_DBI(power_rule->max_antenna_gain);
+		chan->max_bandwidth = KHZ_TO_MHZ(max_bandwidth);
+		chan->max_power = chan->orig_mpwr =
+			(int) MBM_TO_DBM(power_rule->max_eirp);
+		return;
+	}
+
 	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));
@@ -931,116 +1019,513 @@ static void handle_band(struct wiphy *wiphy, enum ieee80211_band band)
 		handle_channel(wiphy, band, i);
 }
 
-static bool ignore_reg_update(struct wiphy *wiphy, enum reg_set_by setby)
+static bool ignore_reg_update(struct wiphy *wiphy,
+			      enum nl80211_reg_initiator initiator)
 {
 	if (!last_request)
 		return true;
-	if (setby == REGDOM_SET_BY_CORE &&
-		  wiphy->fw_handles_regulatory)
+	if (initiator == NL80211_REGDOM_SET_BY_CORE &&
+		  wiphy->custom_regulatory)
+		return true;
+	/*
+	 * wiphy->regd will be set once the device has its own
+	 * desired regulatory domain set
+	 */
+	if (wiphy->strict_regulatory && !wiphy->regd &&
+	    !is_world_regdom(last_request->alpha2))
 		return true;
 	return false;
 }
 
-static void update_all_wiphy_regulatory(enum reg_set_by setby)
+static void update_all_wiphy_regulatory(enum nl80211_reg_initiator initiator)
 {
 	struct cfg80211_registered_device *drv;
 
 	list_for_each_entry(drv, &cfg80211_drv_list, list)
-		if (!ignore_reg_update(&drv->wiphy, setby))
-			wiphy_update_regulatory(&drv->wiphy, setby);
+		wiphy_update_regulatory(&drv->wiphy, initiator);
+}
+
+static void handle_reg_beacon(struct wiphy *wiphy,
+			      unsigned int chan_idx,
+			      struct reg_beacon *reg_beacon)
+{
+#ifdef CONFIG_CFG80211_REG_DEBUG
+#define REG_DEBUG_BEACON_FLAG(desc) \
+	printk(KERN_DEBUG "cfg80211: Enabling " desc " on " \
+		"frequency: %d MHz (Ch %d) on %s\n", \
+		reg_beacon->chan.center_freq, \
+		ieee80211_frequency_to_channel(reg_beacon->chan.center_freq), \
+		wiphy_name(wiphy));
+#else
+#define REG_DEBUG_BEACON_FLAG(desc) do {} while (0)
+#endif
+	struct ieee80211_supported_band *sband;
+	struct ieee80211_channel *chan;
+
+	assert_cfg80211_lock();
+
+	sband = wiphy->bands[reg_beacon->chan.band];
+	chan = &sband->channels[chan_idx];
+
+	if (likely(chan->center_freq != reg_beacon->chan.center_freq))
+		return;
+
+	if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) {
+		chan->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
+		REG_DEBUG_BEACON_FLAG("active scanning");
+	}
+
+	if (chan->flags & IEEE80211_CHAN_NO_IBSS) {
+		chan->flags &= ~IEEE80211_CHAN_NO_IBSS;
+		REG_DEBUG_BEACON_FLAG("beaconing");
+	}
+
+	chan->beacon_found = true;
+#undef REG_DEBUG_BEACON_FLAG
 }
 
-void wiphy_update_regulatory(struct wiphy *wiphy, enum reg_set_by setby)
+/*
+ * Called when a scan on a wiphy finds a beacon on
+ * new channel
+ */
+static void wiphy_update_new_beacon(struct wiphy *wiphy,
+				    struct reg_beacon *reg_beacon)
+{
+	unsigned int i;
+	struct ieee80211_supported_band *sband;
+
+	assert_cfg80211_lock();
+
+	if (!wiphy->bands[reg_beacon->chan.band])
+		return;
+
+	sband = wiphy->bands[reg_beacon->chan.band];
+
+	for (i = 0; i < sband->n_channels; i++)
+		handle_reg_beacon(wiphy, i, reg_beacon);
+}
+
+/*
+ * Called upon reg changes or a new wiphy is added
+ */
+static void wiphy_update_beacon_reg(struct wiphy *wiphy)
+{
+	unsigned int i;
+	struct ieee80211_supported_band *sband;
+	struct reg_beacon *reg_beacon;
+
+	assert_cfg80211_lock();
+
+	if (list_empty(&reg_beacon_list))
+		return;
+
+	list_for_each_entry(reg_beacon, &reg_beacon_list, list) {
+		if (!wiphy->bands[reg_beacon->chan.band])
+			continue;
+		sband = wiphy->bands[reg_beacon->chan.band];
+		for (i = 0; i < sband->n_channels; i++)
+			handle_reg_beacon(wiphy, i, reg_beacon);
+	}
+}
+
+static bool reg_is_world_roaming(struct wiphy *wiphy)
+{
+	if (is_world_regdom(cfg80211_regdomain->alpha2) ||
+	    (wiphy->regd && is_world_regdom(wiphy->regd->alpha2)))
+		return true;
+	if (last_request->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE &&
+	    wiphy->custom_regulatory)
+		return true;
+	return false;
+}
+
+/* Reap the advantages of previously found beacons */
+static void reg_process_beacons(struct wiphy *wiphy)
+{
+	if (!reg_is_world_roaming(wiphy))
+		return;
+	wiphy_update_beacon_reg(wiphy);
+}
+
+void wiphy_update_regulatory(struct wiphy *wiphy,
+			     enum nl80211_reg_initiator initiator)
 {
 	enum ieee80211_band band;
+
+	if (ignore_reg_update(wiphy, initiator))
+		goto out;
 	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
 		if (wiphy->bands[band])
 			handle_band(wiphy, band);
-		if (wiphy->reg_notifier)
-			wiphy->reg_notifier(wiphy, setby);
 	}
+out:
+	reg_process_beacons(wiphy);
+	if (wiphy->reg_notifier)
+		wiphy->reg_notifier(wiphy, last_request);
 }
 
-/* Return value which can be used by ignore_request() to indicate
- * it has been determined we should intersect two regulatory domains */
+static void handle_channel_custom(struct wiphy *wiphy,
+				  enum ieee80211_band band,
+				  unsigned int chan_idx,
+				  const struct ieee80211_regdomain *regd)
+{
+	int r;
+	u32 max_bandwidth = 0;
+	const struct ieee80211_reg_rule *reg_rule = NULL;
+	const struct ieee80211_power_rule *power_rule = NULL;
+	struct ieee80211_supported_band *sband;
+	struct ieee80211_channel *chan;
+
+	sband = wiphy->bands[band];
+	BUG_ON(chan_idx >= sband->n_channels);
+	chan = &sband->channels[chan_idx];
+
+	r = freq_reg_info_regd(wiphy, MHZ_TO_KHZ(chan->center_freq),
+		&max_bandwidth, &reg_rule, regd);
+
+	if (r) {
+		chan->flags = IEEE80211_CHAN_DISABLED;
+		return;
+	}
+
+	power_rule = &reg_rule->power_rule;
+
+	chan->flags |= map_regdom_flags(reg_rule->flags);
+	chan->max_antenna_gain = (int) MBI_TO_DBI(power_rule->max_antenna_gain);
+	chan->max_bandwidth = KHZ_TO_MHZ(max_bandwidth);
+	chan->max_power = (int) MBM_TO_DBM(power_rule->max_eirp);
+}
+
+static void handle_band_custom(struct wiphy *wiphy, enum ieee80211_band band,
+			       const struct ieee80211_regdomain *regd)
+{
+	unsigned int i;
+	struct ieee80211_supported_band *sband;
+
+	BUG_ON(!wiphy->bands[band]);
+	sband = wiphy->bands[band];
+
+	for (i = 0; i < sband->n_channels; i++)
+		handle_channel_custom(wiphy, band, i, regd);
+}
+
+/* Used by drivers prior to wiphy registration */
+void wiphy_apply_custom_regulatory(struct wiphy *wiphy,
+				   const struct ieee80211_regdomain *regd)
+{
+	enum ieee80211_band band;
+	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+		if (wiphy->bands[band])
+			handle_band_custom(wiphy, band, regd);
+	}
+}
+EXPORT_SYMBOL(wiphy_apply_custom_regulatory);
+
+static int reg_copy_regd(const struct ieee80211_regdomain **dst_regd,
+			 const struct ieee80211_regdomain *src_regd)
+{
+	struct ieee80211_regdomain *regd;
+	int size_of_regd = 0;
+	unsigned int i;
+
+	size_of_regd = sizeof(struct ieee80211_regdomain) +
+	  ((src_regd->n_reg_rules + 1) * sizeof(struct ieee80211_reg_rule));
+
+	regd = kzalloc(size_of_regd, GFP_KERNEL);
+	if (!regd)
+		return -ENOMEM;
+
+	memcpy(regd, src_regd, sizeof(struct ieee80211_regdomain));
+
+	for (i = 0; i < src_regd->n_reg_rules; i++)
+		memcpy(&regd->reg_rules[i], &src_regd->reg_rules[i],
+			sizeof(struct ieee80211_reg_rule));
+
+	*dst_regd = regd;
+	return 0;
+}
+
+/*
+ * Return value which can be used by ignore_request() to indicate
+ * it has been determined we should intersect two regulatory domains
+ */
 #define REG_INTERSECT	1
 
 /* 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,
-			  const char *alpha2)
+static int ignore_request(struct wiphy *wiphy,
+			  struct regulatory_request *pending_request)
 {
+	struct wiphy *last_wiphy = NULL;
+
+	assert_cfg80211_lock();
+
 	/* All initial requests are respected */
 	if (!last_request)
 		return 0;
 
-	switch (set_by) {
-	case REGDOM_SET_BY_INIT:
+	switch (pending_request->initiator) {
+	case NL80211_REGDOM_SET_BY_CORE:
 		return -EINVAL;
-	case REGDOM_SET_BY_CORE:
-		/*
-		 * Always respect new wireless core hints, should only happen
-		 * when updating the world regulatory domain at init.
-		 */
-		return 0;
-	case REGDOM_SET_BY_COUNTRY_IE:
-		if (unlikely(!is_an_alpha2(alpha2)))
+	case NL80211_REGDOM_SET_BY_COUNTRY_IE:
+
+		last_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx);
+
+		if (unlikely(!is_an_alpha2(pending_request->alpha2)))
 			return -EINVAL;
-		if (last_request->initiator == REGDOM_SET_BY_COUNTRY_IE) {
-			if (last_request->wiphy != wiphy) {
+		if (last_request->initiator ==
+		    NL80211_REGDOM_SET_BY_COUNTRY_IE) {
+			if (last_wiphy != wiphy) {
 				/*
 				 * Two cards with two APs claiming different
 				 * different Country IE alpha2s. We could
 				 * intersect them, but that seems unlikely
 				 * to be correct. Reject second one for now.
 				 */
-				if (!alpha2_equal(alpha2,
-						  cfg80211_regdomain->alpha2))
+				if (regdom_changes(pending_request->alpha2))
 					return -EOPNOTSUPP;
 				return -EALREADY;
 			}
-			/* Two consecutive Country IE hints on the same wiphy.
-			 * This should be picked up early by the driver/stack */
-			if (WARN_ON(!alpha2_equal(cfg80211_regdomain->alpha2,
-				  alpha2)))
+			/*
+			 * Two consecutive Country IE hints on the same wiphy.
+			 * This should be picked up early by the driver/stack
+			 */
+			if (WARN_ON(regdom_changes(pending_request->alpha2)))
 				return 0;
 			return -EALREADY;
 		}
 		return REG_INTERSECT;
-	case REGDOM_SET_BY_DRIVER:
-		if (last_request->initiator == REGDOM_SET_BY_DRIVER)
+	case NL80211_REGDOM_SET_BY_DRIVER:
+		if (last_request->initiator == NL80211_REGDOM_SET_BY_CORE) {
+			if (is_old_static_regdom(cfg80211_regdomain))
+				return 0;
+			if (regdom_changes(pending_request->alpha2))
+				return 0;
 			return -EALREADY;
-		return 0;
-	case REGDOM_SET_BY_USER:
-		if (last_request->initiator == REGDOM_SET_BY_COUNTRY_IE)
+		}
+
+		/*
+		 * This would happen if you unplug and plug your card
+		 * back in or if you add a new device for which the previously
+		 * loaded card also agrees on the regulatory domain.
+		 */
+		if (last_request->initiator == NL80211_REGDOM_SET_BY_DRIVER &&
+		    !regdom_changes(pending_request->alpha2))
+			return -EALREADY;
+
+		return REG_INTERSECT;
+	case NL80211_REGDOM_SET_BY_USER:
+		if (last_request->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE)
 			return REG_INTERSECT;
-		/* If the user knows better the user should set the regdom
-		 * to their country before the IE is picked up */
-		if (last_request->initiator == REGDOM_SET_BY_USER &&
+		/*
+		 * If the user knows better the user should set the regdom
+		 * to their country before the IE is picked up
+		 */
+		if (last_request->initiator == NL80211_REGDOM_SET_BY_USER &&
 			  last_request->intersect)
 			return -EOPNOTSUPP;
+		/*
+		 * Process user requests only after previous user/driver/core
+		 * requests have been processed
+		 */
+		if (last_request->initiator == NL80211_REGDOM_SET_BY_CORE ||
+		    last_request->initiator == NL80211_REGDOM_SET_BY_DRIVER ||
+		    last_request->initiator == NL80211_REGDOM_SET_BY_USER) {
+			if (regdom_changes(last_request->alpha2))
+				return -EAGAIN;
+		}
+
+		if (!is_old_static_regdom(cfg80211_regdomain) &&
+		    !regdom_changes(pending_request->alpha2))
+			return -EALREADY;
+
 		return 0;
 	}
 
 	return -EINVAL;
 }
 
-/* Caller must hold &cfg80211_drv_mutex */
-int __regulatory_hint(struct wiphy *wiphy, enum reg_set_by set_by,
-			const char *alpha2,
-			u32 country_ie_checksum,
-			enum environment_cap env)
+/**
+ * __regulatory_hint - hint to the wireless core a regulatory domain
+ * @wiphy: if the hint comes from country information from an AP, this
+ *	is required to be set to the wiphy that received the information
+ * @pending_request: the regulatory request currently being processed
+ *
+ * The Wireless subsystem can use this function to hint to the wireless core
+ * what it believes should be the current regulatory domain.
+ *
+ * Returns zero if all went fine, %-EALREADY if a regulatory domain had
+ * already been set or other standard error codes.
+ *
+ * Caller must hold &cfg80211_mutex
+ */
+static int __regulatory_hint(struct wiphy *wiphy,
+			     struct regulatory_request *pending_request)
 {
-	struct regulatory_request *request;
 	bool intersect = false;
 	int r = 0;
 
-	r = ignore_request(wiphy, set_by, alpha2);
+	assert_cfg80211_lock();
+
+	r = ignore_request(wiphy, pending_request);
 
-	if (r == REG_INTERSECT)
+	if (r == REG_INTERSECT) {
+		if (pending_request->initiator ==
+		    NL80211_REGDOM_SET_BY_DRIVER) {
+			r = reg_copy_regd(&wiphy->regd, cfg80211_regdomain);
+			if (r) {
+				kfree(pending_request);
+				return r;
+			}
+		}
 		intersect = true;
-	else if (r)
+	} else if (r) {
+		/*
+		 * If the regulatory domain being requested by the
+		 * driver has already been set just copy it to the
+		 * wiphy
+		 */
+		if (r == -EALREADY &&
+		    pending_request->initiator ==
+		    NL80211_REGDOM_SET_BY_DRIVER) {
+			r = reg_copy_regd(&wiphy->regd, cfg80211_regdomain);
+			if (r) {
+				kfree(pending_request);
+				return r;
+			}
+			r = -EALREADY;
+			goto new_request;
+		}
+		kfree(pending_request);
+		return r;
+	}
+
+new_request:
+	kfree(last_request);
+
+	last_request = pending_request;
+	last_request->intersect = intersect;
+
+	pending_request = NULL;
+
+	/* When r == REG_INTERSECT we do need to call CRDA */
+	if (r < 0) {
+		/*
+		 * Since CRDA will not be called in this case as we already
+		 * have applied the requested regulatory domain before we just
+		 * inform userspace we have processed the request
+		 */
+		if (r == -EALREADY)
+			nl80211_send_reg_change_event(last_request);
 		return r;
+	}
+
+	return call_crda(last_request->alpha2);
+}
+
+/* This currently only processes user and driver regulatory hints */
+static void reg_process_hint(struct regulatory_request *reg_request)
+{
+	int r = 0;
+	struct wiphy *wiphy = NULL;
+
+	BUG_ON(!reg_request->alpha2);
+
+	mutex_lock(&cfg80211_mutex);
+
+	if (wiphy_idx_valid(reg_request->wiphy_idx))
+		wiphy = wiphy_idx_to_wiphy(reg_request->wiphy_idx);
+
+	if (reg_request->initiator == NL80211_REGDOM_SET_BY_DRIVER &&
+	    !wiphy) {
+		kfree(reg_request);
+		goto out;
+	}
+
+	r = __regulatory_hint(wiphy, reg_request);
+	/* This is required so that the orig_* parameters are saved */
+	if (r == -EALREADY && wiphy && wiphy->strict_regulatory)
+		wiphy_update_regulatory(wiphy, reg_request->initiator);
+out:
+	mutex_unlock(&cfg80211_mutex);
+}
+
+/* Processes regulatory hints, this is all the NL80211_REGDOM_SET_BY_* */
+static void reg_process_pending_hints(void)
+	{
+	struct regulatory_request *reg_request;
+
+	spin_lock(&reg_requests_lock);
+	while (!list_empty(&reg_requests_list)) {
+		reg_request = list_first_entry(&reg_requests_list,
+					       struct regulatory_request,
+					       list);
+		list_del_init(&reg_request->list);
+
+		spin_unlock(&reg_requests_lock);
+		reg_process_hint(reg_request);
+		spin_lock(&reg_requests_lock);
+	}
+	spin_unlock(&reg_requests_lock);
+}
+
+/* Processes beacon hints -- this has nothing to do with country IEs */
+static void reg_process_pending_beacon_hints(void)
+{
+	struct cfg80211_registered_device *drv;
+	struct reg_beacon *pending_beacon, *tmp;
+
+	mutex_lock(&cfg80211_mutex);
+
+	/* This goes through the _pending_ beacon list */
+	spin_lock_bh(&reg_pending_beacons_lock);
+
+	if (list_empty(&reg_pending_beacons)) {
+		spin_unlock_bh(&reg_pending_beacons_lock);
+		goto out;
+	}
+
+	list_for_each_entry_safe(pending_beacon, tmp,
+				 &reg_pending_beacons, list) {
+
+		list_del_init(&pending_beacon->list);
+
+		/* Applies the beacon hint to current wiphys */
+		list_for_each_entry(drv, &cfg80211_drv_list, list)
+			wiphy_update_new_beacon(&drv->wiphy, pending_beacon);
+
+		/* Remembers the beacon hint for new wiphys or reg changes */
+		list_add_tail(&pending_beacon->list, &reg_beacon_list);
+	}
+
+	spin_unlock_bh(&reg_pending_beacons_lock);
+out:
+	mutex_unlock(&cfg80211_mutex);
+}
+
+static void reg_todo(struct work_struct *work)
+{
+	reg_process_pending_hints();
+	reg_process_pending_beacon_hints();
+}
+
+static DECLARE_WORK(reg_work, reg_todo);
+
+static void queue_regulatory_request(struct regulatory_request *request)
+{
+	spin_lock(&reg_requests_lock);
+	list_add_tail(&request->list, &reg_requests_list);
+	spin_unlock(&reg_requests_lock);
+
+	schedule_work(&reg_work);
+}
+
+/* Core regulatory hint -- happens once during cfg80211_init() */
+static int regulatory_hint_core(const char *alpha2)
+{
+	struct regulatory_request *request;
+
+	BUG_ON(last_request);
 
 	request = kzalloc(sizeof(struct regulatory_request),
 			  GFP_KERNEL);
@@ -1049,47 +1534,84 @@ int __regulatory_hint(struct wiphy *wiphy, enum reg_set_by set_by,
 
 	request->alpha2[0] = alpha2[0];
 	request->alpha2[1] = alpha2[1];
-	request->initiator = set_by;
-	request->wiphy = wiphy;
-	request->intersect = intersect;
-	request->country_ie_checksum = country_ie_checksum;
-	request->country_ie_env = env;
+	request->initiator = NL80211_REGDOM_SET_BY_CORE;
 
-	kfree(last_request);
-	last_request = request;
-	/*
-	 * Note: When CONFIG_WIRELESS_OLD_REGULATORY is enabled
-	 * AND if CRDA is NOT present nothing will happen, if someone
-	 * wants to bother with 11d with OLD_REG you can add a timer.
-	 * If after x amount of time nothing happens you can call:
-	 *
-	 * return set_regdom(country_ie_regdomain);
-	 *
-	 * to intersect with the static rd
-	 */
-	return call_crda(alpha2);
+	queue_regulatory_request(request);
+
+	return 0;
+}
+
+/* User hints */
+int regulatory_hint_user(const char *alpha2)
+{
+	struct regulatory_request *request;
+
+	BUG_ON(!alpha2);
+
+	request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL);
+	if (!request)
+		return -ENOMEM;
+
+	request->wiphy_idx = WIPHY_IDX_STALE;
+	request->alpha2[0] = alpha2[0];
+	request->alpha2[1] = alpha2[1];
+	request->initiator = NL80211_REGDOM_SET_BY_USER,
+
+	queue_regulatory_request(request);
+
+	return 0;
 }
 
-void regulatory_hint(struct wiphy *wiphy, const char *alpha2)
+/* Driver hints */
+int regulatory_hint(struct wiphy *wiphy, const char *alpha2)
 {
+	struct regulatory_request *request;
+
 	BUG_ON(!alpha2);
+	BUG_ON(!wiphy);
 
-	mutex_lock(&cfg80211_drv_mutex);
-	__regulatory_hint(wiphy, REGDOM_SET_BY_DRIVER, alpha2, 0, ENVIRON_ANY);
-	mutex_unlock(&cfg80211_drv_mutex);
+	request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL);
+	if (!request)
+		return -ENOMEM;
+
+	request->wiphy_idx = get_wiphy_idx(wiphy);
+
+	/* Must have registered wiphy first */
+	BUG_ON(!wiphy_idx_valid(request->wiphy_idx));
+
+	request->alpha2[0] = alpha2[0];
+	request->alpha2[1] = alpha2[1];
+	request->initiator = NL80211_REGDOM_SET_BY_DRIVER;
+
+	queue_regulatory_request(request);
+
+	return 0;
 }
 EXPORT_SYMBOL(regulatory_hint);
 
 static bool reg_same_country_ie_hint(struct wiphy *wiphy,
 			u32 country_ie_checksum)
 {
-	if (!last_request->wiphy)
+	struct wiphy *request_wiphy;
+
+	assert_cfg80211_lock();
+
+	if (unlikely(last_request->initiator !=
+	    NL80211_REGDOM_SET_BY_COUNTRY_IE))
+		return false;
+
+	request_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx);
+
+	if (!request_wiphy)
 		return false;
-	if (likely(last_request->wiphy != wiphy))
+
+	if (likely(request_wiphy != wiphy))
 		return !country_ie_integrity_changes(country_ie_checksum);
-	/* We should not have let these through at this point, they
+	/*
+	 * We should not have let these through at this point, they
 	 * should have been picked up earlier by the first alpha2 check
-	 * on the device */
+	 * on the device
+	 */
 	if (WARN_ON(!country_ie_integrity_changes(country_ie_checksum)))
 		return true;
 	return false;
@@ -1103,11 +1625,14 @@ void regulatory_hint_11d(struct wiphy *wiphy,
 	char alpha2[2];
 	u32 checksum = 0;
 	enum environment_cap env = ENVIRON_ANY;
+	struct regulatory_request *request;
 
-	if (!last_request)
-		return;
+	mutex_lock(&cfg80211_mutex);
 
-	mutex_lock(&cfg80211_drv_mutex);
+	if (unlikely(!last_request)) {
+		mutex_unlock(&cfg80211_mutex);
+		return;
+	}
 
 	/* IE len must be evenly divisible by 2 */
 	if (country_ie_len & 0x01)
@@ -1116,9 +1641,11 @@ void regulatory_hint_11d(struct wiphy *wiphy,
 	if (country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
 		goto out;
 
-	/* Pending country IE processing, this can happen after we
+	/*
+	 * Pending country IE processing, this can happen after we
 	 * call CRDA and wait for a response if a beacon was received before
-	 * we were able to process the last regulatory_hint_11d() call */
+	 * we were able to process the last regulatory_hint_11d() call
+	 */
 	if (country_ie_regdomain)
 		goto out;
 
@@ -1130,33 +1657,46 @@ void regulatory_hint_11d(struct wiphy *wiphy,
 	else if (country_ie[2] == 'O')
 		env = ENVIRON_OUTDOOR;
 
-	/* We will run this for *every* beacon processed for the BSSID, so
+	/*
+	 * We will run this for *every* beacon processed for the BSSID, so
 	 * we optimize an early check to exit out early if we don't have to
-	 * do anything */
-	if (likely(last_request->wiphy)) {
+	 * do anything
+	 */
+	if (likely(last_request->initiator ==
+	    NL80211_REGDOM_SET_BY_COUNTRY_IE &&
+	    wiphy_idx_valid(last_request->wiphy_idx))) {
 		struct cfg80211_registered_device *drv_last_ie;
 
-		drv_last_ie = wiphy_to_dev(last_request->wiphy);
+		drv_last_ie =
+			cfg80211_drv_by_wiphy_idx(last_request->wiphy_idx);
 
-		/* Lets keep this simple -- we trust the first AP
-		 * after we intersect with CRDA */
-		if (likely(last_request->wiphy == wiphy)) {
-			/* Ignore IEs coming in on this wiphy with
-			 * the same alpha2 and environment cap */
+		/*
+		 * Lets keep this simple -- we trust the first AP
+		 * after we intersect with CRDA
+		 */
+		if (likely(&drv_last_ie->wiphy == wiphy)) {
+			/*
+			 * Ignore IEs coming in on this wiphy with
+			 * the same alpha2 and environment cap
+			 */
 			if (likely(alpha2_equal(drv_last_ie->country_ie_alpha2,
 				  alpha2) &&
 				  env == drv_last_ie->env)) {
 				goto out;
 			}
-			/* the wiphy moved on to another BSSID or the AP
+			/*
+			 * the wiphy moved on to another BSSID or the AP
 			 * was reconfigured. XXX: We need to deal with the
 			 * case where the user suspends and goes to goes
 			 * to another country, and then gets IEs from an
-			 * AP with different settings */
+			 * AP with different settings
+			 */
 			goto out;
 		} else {
-			/* Ignore IEs coming in on two separate wiphys with
-			 * the same alpha2 and environment cap */
+			/*
+			 * Ignore IEs coming in on two separate wiphys with
+			 * the same alpha2 and environment cap
+			 */
 			if (likely(alpha2_equal(drv_last_ie->country_ie_alpha2,
 				  alpha2) &&
 				  env == drv_last_ie->env)) {
@@ -1171,28 +1711,97 @@ void regulatory_hint_11d(struct wiphy *wiphy,
 	if (!rd)
 		goto out;
 
-	/* This will not happen right now but we leave it here for the
+	/*
+	 * This will not happen right now but we leave it here for the
 	 * the future when we want to add suspend/resume support and having
 	 * the user move to another country after doing so, or having the user
-	 * move to another AP. Right now we just trust the first AP. This is why
-	 * this is marked as likley(). If we hit this before we add this support
-	 * we want to be informed of it as it would indicate a mistake in the
-	 * current design  */
-	if (likely(WARN_ON(reg_same_country_ie_hint(wiphy, checksum))))
-		goto out;
+	 * move to another AP. Right now we just trust the first AP.
+	 *
+	 * If we hit this before we add this support we want to be informed of
+	 * it as it would indicate a mistake in the current design
+	 */
+	if (WARN_ON(reg_same_country_ie_hint(wiphy, checksum)))
+		goto free_rd_out;
 
-	/* We keep this around for when CRDA comes back with a response so
-	 * we can intersect with that */
+	request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL);
+	if (!request)
+		goto free_rd_out;
+
+	/*
+	 * We keep this around for when CRDA comes back with a response so
+	 * we can intersect with that
+	 */
 	country_ie_regdomain = rd;
 
-	__regulatory_hint(wiphy, REGDOM_SET_BY_COUNTRY_IE,
-		country_ie_regdomain->alpha2, checksum, env);
+	request->wiphy_idx = get_wiphy_idx(wiphy);
+	request->alpha2[0] = rd->alpha2[0];
+	request->alpha2[1] = rd->alpha2[1];
+	request->initiator = NL80211_REGDOM_SET_BY_COUNTRY_IE;
+	request->country_ie_checksum = checksum;
+	request->country_ie_env = env;
+
+	mutex_unlock(&cfg80211_mutex);
+
+	queue_regulatory_request(request);
+
+	return;
 
+free_rd_out:
+	kfree(rd);
 out:
-	mutex_unlock(&cfg80211_drv_mutex);
+	mutex_unlock(&cfg80211_mutex);
 }
 EXPORT_SYMBOL(regulatory_hint_11d);
 
+static bool freq_is_chan_12_13_14(u16 freq)
+{
+	if (freq == ieee80211_channel_to_frequency(12) ||
+	    freq == ieee80211_channel_to_frequency(13) ||
+	    freq == ieee80211_channel_to_frequency(14))
+		return true;
+	return false;
+}
+
+int regulatory_hint_found_beacon(struct wiphy *wiphy,
+				 struct ieee80211_channel *beacon_chan,
+				 gfp_t gfp)
+{
+	struct reg_beacon *reg_beacon;
+
+	if (likely((beacon_chan->beacon_found ||
+	    (beacon_chan->flags & IEEE80211_CHAN_RADAR) ||
+	    (beacon_chan->band == IEEE80211_BAND_2GHZ &&
+	     !freq_is_chan_12_13_14(beacon_chan->center_freq)))))
+		return 0;
+
+	reg_beacon = kzalloc(sizeof(struct reg_beacon), gfp);
+	if (!reg_beacon)
+		return -ENOMEM;
+
+#ifdef CONFIG_CFG80211_REG_DEBUG
+	printk(KERN_DEBUG "cfg80211: Found new beacon on "
+		"frequency: %d MHz (Ch %d) on %s\n",
+		beacon_chan->center_freq,
+		ieee80211_frequency_to_channel(beacon_chan->center_freq),
+		wiphy_name(wiphy));
+#endif
+	memcpy(&reg_beacon->chan, beacon_chan,
+		sizeof(struct ieee80211_channel));
+
+
+	/*
+	 * Since we can be called from BH or and non-BH context
+	 * we must use spin_lock_bh()
+	 */
+	spin_lock_bh(&reg_pending_beacons_lock);
+	list_add_tail(&reg_beacon->list, &reg_pending_beacons);
+	spin_unlock_bh(&reg_pending_beacons_lock);
+
+	schedule_work(&reg_work);
+
+	return 0;
+}
+
 static void print_rd_rules(const struct ieee80211_regdomain *rd)
 {
 	unsigned int i;
@@ -1208,8 +1817,10 @@ static void print_rd_rules(const struct ieee80211_regdomain *rd)
 		freq_range = &reg_rule->freq_range;
 		power_rule = &reg_rule->power_rule;
 
-		/* There may not be documentation for max antenna gain
-		 * in certain regions */
+		/*
+		 * 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",
@@ -1232,13 +1843,13 @@ static void print_regdomain(const struct ieee80211_regdomain *rd)
 {
 
 	if (is_intersected_alpha2(rd->alpha2)) {
-		struct wiphy *wiphy = NULL;
-		struct cfg80211_registered_device *drv;
 
-		if (last_request->initiator == REGDOM_SET_BY_COUNTRY_IE) {
-			if (last_request->wiphy) {
-				wiphy = last_request->wiphy;
-				drv = wiphy_to_dev(wiphy);
+		if (last_request->initiator ==
+		    NL80211_REGDOM_SET_BY_COUNTRY_IE) {
+			struct cfg80211_registered_device *drv;
+			drv = cfg80211_drv_by_wiphy_idx(
+				last_request->wiphy_idx);
+			if (drv) {
 				printk(KERN_INFO "cfg80211: Current regulatory "
 					"domain updated by AP to: %c%c\n",
 					drv->country_ie_alpha2[0],
@@ -1248,7 +1859,7 @@ static void print_regdomain(const struct ieee80211_regdomain *rd)
 					"domain intersected: \n");
 		} else
 				printk(KERN_INFO "cfg80211: Current regulatory "
-					"intersected: \n");
+					"domain intersected: \n");
 	} else if (is_world_regdom(rd->alpha2))
 		printk(KERN_INFO "cfg80211: World regulatory "
 			"domain updated:\n");
@@ -1304,7 +1915,7 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
 {
 	const struct ieee80211_regdomain *intersected_rd = NULL;
 	struct cfg80211_registered_device *drv = NULL;
-	struct wiphy *wiphy = NULL;
+	struct wiphy *request_wiphy;
 	/* Some basic sanity checks first */
 
 	if (is_world_regdom(rd->alpha2)) {
@@ -1321,23 +1932,27 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
 	if (!last_request)
 		return -EINVAL;
 
-	/* Lets only bother proceeding on the same alpha2 if the current
+	/*
+	 * Lets only bother proceeding on the same alpha2 if the current
 	 * rd is non static (it means CRDA was present and was used last)
-	 * and the pending request came in from a country IE */
-	if (last_request->initiator != REGDOM_SET_BY_COUNTRY_IE) {
-		/* If someone else asked us to change the rd lets only bother
-		 * checking if the alpha2 changes if CRDA was already called */
+	 * and the pending request came in from a country IE
+	 */
+	if (last_request->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) {
+		/*
+		 * If someone else asked us to change the rd lets only bother
+		 * checking if the alpha2 changes if CRDA was already called
+		 */
 		if (!is_old_static_regdom(cfg80211_regdomain) &&
-		    !regdom_changed(rd->alpha2))
+		    !regdom_changes(rd->alpha2))
 			return -EINVAL;
 	}
 
-	wiphy = last_request->wiphy;
-
-	/* Now lets set the regulatory domain, update all driver channels
+	/*
+	 * 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 */
+	 * internal EEPROM data
+	 */
 
 	if (WARN_ON(!reg_is_valid_request(rd->alpha2)))
 		return -EINVAL;
@@ -1349,7 +1964,28 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
 		return -EINVAL;
 	}
 
+	request_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx);
+
 	if (!last_request->intersect) {
+		int r;
+
+		if (last_request->initiator != NL80211_REGDOM_SET_BY_DRIVER) {
+			reset_regdomains();
+			cfg80211_regdomain = rd;
+			return 0;
+		}
+
+		/*
+		 * For a driver hint, lets copy the regulatory domain the
+		 * driver wanted to the wiphy to deal with conflicts
+		 */
+
+		BUG_ON(request_wiphy->regd);
+
+		r = reg_copy_regd(&request_wiphy->regd, rd);
+		if (r)
+			return r;
+
 		reset_regdomains();
 		cfg80211_regdomain = rd;
 		return 0;
@@ -1357,14 +1993,22 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
 
 	/* Intersection requires a bit more work */
 
-	if (last_request->initiator != REGDOM_SET_BY_COUNTRY_IE) {
+	if (last_request->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) {
 
 		intersected_rd = regdom_intersect(rd, cfg80211_regdomain);
 		if (!intersected_rd)
 			return -EINVAL;
 
-		/* We can trash what CRDA provided now */
-		kfree(rd);
+		/*
+		 * We can trash what CRDA provided now.
+		 * However if a driver requested this specific regulatory
+		 * domain we keep it for its private use
+		 */
+		if (last_request->initiator == NL80211_REGDOM_SET_BY_DRIVER)
+			request_wiphy->regd = rd;
+		else
+			kfree(rd);
+
 		rd = NULL;
 
 		reset_regdomains();
@@ -1379,29 +2023,26 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
 	 */
 
 	BUG_ON(!country_ie_regdomain);
+	BUG_ON(rd == country_ie_regdomain);
 
-	if (rd != country_ie_regdomain) {
-		/* Intersect what CRDA returned and our what we
-		 * had built from the Country IE received */
+	/*
+	 * Intersect what CRDA returned and our what we
+	 * had built from the Country IE received
+	 */
 
-		intersected_rd = regdom_intersect(rd, country_ie_regdomain);
+	intersected_rd = regdom_intersect(rd, country_ie_regdomain);
 
-		reg_country_ie_process_debug(rd, country_ie_regdomain,
-			intersected_rd);
+	reg_country_ie_process_debug(rd,
+				     country_ie_regdomain,
+				     intersected_rd);
 
-		kfree(country_ie_regdomain);
-		country_ie_regdomain = NULL;
-	} else {
-		/* This would happen when CRDA was not present and
-		 * OLD_REGULATORY was enabled. We intersect our Country
-		 * IE rd and what was set on cfg80211 originally */
-		intersected_rd = regdom_intersect(rd, cfg80211_regdomain);
-	}
+	kfree(country_ie_regdomain);
+	country_ie_regdomain = NULL;
 
 	if (!intersected_rd)
 		return -EINVAL;
 
-	drv = wiphy_to_dev(wiphy);
+	drv = wiphy_to_dev(request_wiphy);
 
 	drv->country_ie_alpha2[0] = rd->alpha2[0];
 	drv->country_ie_alpha2[1] = rd->alpha2[1];
@@ -1419,13 +2060,17 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
 }
 
 
-/* Use this call to set the current regulatory domain. Conflicts with
+/*
+ * 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. Caller must hold cfg80211_drv_mutex */
+ * kmalloc'd the rd structure. Caller must hold cfg80211_mutex
+ */
 int set_regdom(const struct ieee80211_regdomain *rd)
 {
 	int r;
 
+	assert_cfg80211_lock();
+
 	/* Note that this doesn't update the wiphys, this is done below */
 	r = __set_regdom(rd);
 	if (r) {
@@ -1442,56 +2087,90 @@ int set_regdom(const struct ieee80211_regdomain *rd)
 
 	print_regdomain(cfg80211_regdomain);
 
+	nl80211_send_reg_change_event(last_request);
+
 	return r;
 }
 
-/* Caller must hold cfg80211_drv_mutex */
+/* Caller must hold cfg80211_mutex */
 void reg_device_remove(struct wiphy *wiphy)
 {
-	if (!last_request || !last_request->wiphy)
+	struct wiphy *request_wiphy;
+
+	assert_cfg80211_lock();
+
+	request_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx);
+
+	kfree(wiphy->regd);
+	if (!last_request || !request_wiphy)
 		return;
-	if (last_request->wiphy != wiphy)
+	if (request_wiphy != wiphy)
 		return;
-	last_request->wiphy = NULL;
+	last_request->wiphy_idx = WIPHY_IDX_STALE;
 	last_request->country_ie_env = ENVIRON_ANY;
 }
 
 int regulatory_init(void)
 {
-	int err;
+	int err = 0;
 
 	reg_pdev = platform_device_register_simple("regulatory", 0, NULL, 0);
 	if (IS_ERR(reg_pdev))
 		return PTR_ERR(reg_pdev);
 
+	spin_lock_init(&reg_requests_lock);
+	spin_lock_init(&reg_pending_beacons_lock);
+
 #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
+	/*
+	 * 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, 0, ENVIRON_ANY);
+	 * stuck with the static values. Since "EU" is not a valid
+	 * ISO / IEC 3166 alpha2 code we can't expect userpace to
+	 * give us a regulatory domain for it. We need last_request
+	 * iniitalized though so lets just send a request which we
+	 * know will be ignored... this crap will be removed once
+	 * OLD_REG dies.
+	 */
+	err = regulatory_hint_core(ieee80211_regdom);
 #else
 	cfg80211_regdomain = cfg80211_world_regdom;
 
-	err = __regulatory_hint(NULL, REGDOM_SET_BY_CORE, "00", 0, ENVIRON_ANY);
-	if (err)
-		printk(KERN_ERR "cfg80211: calling CRDA failed - "
-		       "unable to update world regulatory domain, "
-		       "using static definition\n");
+	err = regulatory_hint_core(ieee80211_regdom);
+#endif
+	if (err) {
+		if (err == -ENOMEM)
+			return err;
+		/*
+		 * N.B. kobject_uevent_env() can fail mainly for when we're out
+		 * memory which is handled and propagated appropriately above
+		 * but it can also fail during a netlink_broadcast() or during
+		 * early boot for call_usermodehelper(). For now treat these
+		 * errors as non-fatal.
+		 */
+		printk(KERN_ERR "cfg80211: kobject_uevent_env() was unable "
+			"to call CRDA during init");
+#ifdef CONFIG_CFG80211_REG_DEBUG
+		/* We want to find out exactly why when debugging */
+		WARN_ON(err);
 #endif
+	}
 
 	return 0;
 }
 
 void regulatory_exit(void)
 {
-	mutex_lock(&cfg80211_drv_mutex);
+	struct regulatory_request *reg_request, *tmp;
+	struct reg_beacon *reg_beacon, *btmp;
+
+	cancel_work_sync(&reg_work);
+
+	mutex_lock(&cfg80211_mutex);
 
 	reset_regdomains();
 
@@ -1502,5 +2181,33 @@ void regulatory_exit(void)
 
 	platform_device_unregister(reg_pdev);
 
-	mutex_unlock(&cfg80211_drv_mutex);
+	spin_lock_bh(&reg_pending_beacons_lock);
+	if (!list_empty(&reg_pending_beacons)) {
+		list_for_each_entry_safe(reg_beacon, btmp,
+					 &reg_pending_beacons, list) {
+			list_del(&reg_beacon->list);
+			kfree(reg_beacon);
+		}
+	}
+	spin_unlock_bh(&reg_pending_beacons_lock);
+
+	if (!list_empty(&reg_beacon_list)) {
+		list_for_each_entry_safe(reg_beacon, btmp,
+					 &reg_beacon_list, list) {
+			list_del(&reg_beacon->list);
+			kfree(reg_beacon);
+		}
+	}
+
+	spin_lock(&reg_requests_lock);
+	if (!list_empty(&reg_requests_list)) {
+		list_for_each_entry_safe(reg_request, tmp,
+					 &reg_requests_list, list) {
+			list_del(&reg_request->list);
+			kfree(reg_request);
+		}
+	}
+	spin_unlock(&reg_requests_lock);
+
+	mutex_unlock(&cfg80211_mutex);
 }
diff --git a/net/wireless/reg.h b/net/wireless/reg.h
index a76ea3ff7cd6..e37829a49dc4 100644
--- a/net/wireless/reg.h
+++ b/net/wireless/reg.h
@@ -1,9 +1,13 @@
 #ifndef __NET_WIRELESS_REG_H
 #define __NET_WIRELESS_REG_H
 
+extern const struct ieee80211_regdomain *cfg80211_regdomain;
+
 bool is_world_regdom(const char *alpha2);
 bool reg_is_valid_request(const char *alpha2);
 
+int regulatory_hint_user(const char *alpha2);
+
 void reg_device_remove(struct wiphy *wiphy);
 
 int regulatory_init(void);
@@ -11,34 +15,25 @@ void regulatory_exit(void);
 
 int set_regdom(const struct ieee80211_regdomain *rd);
 
-enum environment_cap {
-	ENVIRON_ANY,
-	ENVIRON_INDOOR,
-	ENVIRON_OUTDOOR,
-};
-
-
 /**
- * __regulatory_hint - hint to the wireless core a regulatory domain
- * @wiphy: if the hint comes from country information from an AP, this
- *	is required to be set to the wiphy that received the information
- * @alpha2: the ISO/IEC 3166 alpha2 being claimed the regulatory domain
- *	should be in.
- * @country_ie_checksum: checksum of processed country IE, set this to 0
- * 	if the hint did not come from a country IE
- * @country_ie_env: the environment the IE told us we are in, %ENVIRON_*
- *
- * The Wireless subsystem can use this function to hint to the wireless core
- * what it believes should be the current regulatory domain by giving it an
- * ISO/IEC 3166 alpha2 country code it knows its regulatory domain should be
- * in.
+ * regulatory_hint_found_beacon - hints a beacon was found on a channel
+ * @wiphy: the wireless device where the beacon was found on
+ * @beacon_chan: the channel on which the beacon was found on
+ * @gfp: context flags
  *
- * Returns zero if all went fine, %-EALREADY if a regulatory domain had
- * already been set or other standard error codes.
+ * This informs the wireless core that a beacon from an AP was found on
+ * the channel provided. This allows the wireless core to make educated
+ * guesses on regulatory to help with world roaming. This is only used for
+ * world roaming -- when we do not know our current location. This is
+ * only useful on channels 12, 13 and 14 on the 2 GHz band as channels
+ * 1-11 are already enabled by the world regulatory domain; and on
+ * non-radar 5 GHz channels.
  *
+ * Drivers do not need to call this, cfg80211 will do it for after a scan
+ * on a newly found BSS.
  */
-extern int __regulatory_hint(struct wiphy *wiphy, enum reg_set_by set_by,
-			     const char *alpha2, u32 country_ie_checksum,
-			     enum environment_cap country_ie_env);
+int regulatory_hint_found_beacon(struct wiphy *wiphy,
+					struct ieee80211_channel *beacon_chan,
+					gfp_t gfp);
 
 #endif  /* __NET_WIRELESS_REG_H */
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
new file mode 100644
index 000000000000..2a00e362f5fe
--- /dev/null
+++ b/net/wireless/scan.c
@@ -0,0 +1,891 @@
+/*
+ * cfg80211 scan result handling
+ *
+ * Copyright 2008 Johannes Berg <johannes@sipsolutions.net>
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/wireless.h>
+#include <linux/nl80211.h>
+#include <linux/etherdevice.h>
+#include <net/arp.h>
+#include <net/cfg80211.h>
+#include <net/iw_handler.h>
+#include "core.h"
+#include "nl80211.h"
+
+#define IEEE80211_SCAN_RESULT_EXPIRE	(10 * HZ)
+
+void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted)
+{
+	struct net_device *dev;
+#ifdef CONFIG_WIRELESS_EXT
+	union iwreq_data wrqu;
+#endif
+
+	dev = dev_get_by_index(&init_net, request->ifidx);
+	if (!dev)
+		goto out;
+
+	WARN_ON(request != wiphy_to_dev(request->wiphy)->scan_req);
+	wiphy_to_dev(request->wiphy)->scan_req = NULL;
+
+	if (aborted)
+		nl80211_send_scan_aborted(wiphy_to_dev(request->wiphy), dev);
+	else
+		nl80211_send_scan_done(wiphy_to_dev(request->wiphy), dev);
+
+#ifdef CONFIG_WIRELESS_EXT
+	if (!aborted) {
+		memset(&wrqu, 0, sizeof(wrqu));
+
+		wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL);
+	}
+#endif
+
+	dev_put(dev);
+
+ out:
+	kfree(request);
+}
+EXPORT_SYMBOL(cfg80211_scan_done);
+
+static void bss_release(struct kref *ref)
+{
+	struct cfg80211_internal_bss *bss;
+
+	bss = container_of(ref, struct cfg80211_internal_bss, ref);
+	if (bss->pub.free_priv)
+		bss->pub.free_priv(&bss->pub);
+	kfree(bss);
+}
+
+/* must hold dev->bss_lock! */
+void cfg80211_bss_age(struct cfg80211_registered_device *dev,
+                      unsigned long age_secs)
+{
+	struct cfg80211_internal_bss *bss;
+	unsigned long age_jiffies = msecs_to_jiffies(age_secs * MSEC_PER_SEC);
+
+	list_for_each_entry(bss, &dev->bss_list, list) {
+		bss->ts -= age_jiffies;
+	}
+}
+
+/* must hold dev->bss_lock! */
+void cfg80211_bss_expire(struct cfg80211_registered_device *dev)
+{
+	struct cfg80211_internal_bss *bss, *tmp;
+	bool expired = false;
+
+	list_for_each_entry_safe(bss, tmp, &dev->bss_list, list) {
+		if (bss->hold ||
+		    !time_after(jiffies, bss->ts + IEEE80211_SCAN_RESULT_EXPIRE))
+			continue;
+		list_del(&bss->list);
+		rb_erase(&bss->rbn, &dev->bss_tree);
+		kref_put(&bss->ref, bss_release);
+		expired = true;
+	}
+
+	if (expired)
+		dev->bss_generation++;
+}
+
+static u8 *find_ie(u8 num, u8 *ies, size_t len)
+{
+	while (len > 2 && ies[0] != num) {
+		len -= ies[1] + 2;
+		ies += ies[1] + 2;
+	}
+	if (len < 2)
+		return NULL;
+	if (len < 2 + ies[1])
+		return NULL;
+	return ies;
+}
+
+static int cmp_ies(u8 num, u8 *ies1, size_t len1, u8 *ies2, size_t len2)
+{
+	const u8 *ie1 = find_ie(num, ies1, len1);
+	const u8 *ie2 = find_ie(num, ies2, len2);
+	int r;
+
+	if (!ie1 && !ie2)
+		return 0;
+	if (!ie1)
+		return -1;
+
+	r = memcmp(ie1 + 2, ie2 + 2, min(ie1[1], ie2[1]));
+	if (r == 0 && ie1[1] != ie2[1])
+		return ie2[1] - ie1[1];
+	return r;
+}
+
+static bool is_bss(struct cfg80211_bss *a,
+		   const u8 *bssid,
+		   const u8 *ssid, size_t ssid_len)
+{
+	const u8 *ssidie;
+
+	if (bssid && compare_ether_addr(a->bssid, bssid))
+		return false;
+
+	if (!ssid)
+		return true;
+
+	ssidie = find_ie(WLAN_EID_SSID,
+			 a->information_elements,
+			 a->len_information_elements);
+	if (!ssidie)
+		return false;
+	if (ssidie[1] != ssid_len)
+		return false;
+	return memcmp(ssidie + 2, ssid, ssid_len) == 0;
+}
+
+static bool is_mesh(struct cfg80211_bss *a,
+		    const u8 *meshid, size_t meshidlen,
+		    const u8 *meshcfg)
+{
+	const u8 *ie;
+
+	if (!is_zero_ether_addr(a->bssid))
+		return false;
+
+	ie = find_ie(WLAN_EID_MESH_ID,
+		     a->information_elements,
+		     a->len_information_elements);
+	if (!ie)
+		return false;
+	if (ie[1] != meshidlen)
+		return false;
+	if (memcmp(ie + 2, meshid, meshidlen))
+		return false;
+
+	ie = find_ie(WLAN_EID_MESH_CONFIG,
+		     a->information_elements,
+		     a->len_information_elements);
+	if (ie[1] != IEEE80211_MESH_CONFIG_LEN)
+		return false;
+
+	/*
+	 * Ignore mesh capability (last two bytes of the IE) when
+	 * comparing since that may differ between stations taking
+	 * part in the same mesh.
+	 */
+	return memcmp(ie + 2, meshcfg, IEEE80211_MESH_CONFIG_LEN - 2) == 0;
+}
+
+static int cmp_bss(struct cfg80211_bss *a,
+		   struct cfg80211_bss *b)
+{
+	int r;
+
+	if (a->channel != b->channel)
+		return b->channel->center_freq - a->channel->center_freq;
+
+	r = memcmp(a->bssid, b->bssid, ETH_ALEN);
+	if (r)
+		return r;
+
+	if (is_zero_ether_addr(a->bssid)) {
+		r = cmp_ies(WLAN_EID_MESH_ID,
+			    a->information_elements,
+			    a->len_information_elements,
+			    b->information_elements,
+			    b->len_information_elements);
+		if (r)
+			return r;
+		return cmp_ies(WLAN_EID_MESH_CONFIG,
+			       a->information_elements,
+			       a->len_information_elements,
+			       b->information_elements,
+			       b->len_information_elements);
+	}
+
+	return cmp_ies(WLAN_EID_SSID,
+		       a->information_elements,
+		       a->len_information_elements,
+		       b->information_elements,
+		       b->len_information_elements);
+}
+
+struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy,
+				      struct ieee80211_channel *channel,
+				      const u8 *bssid,
+				      const u8 *ssid, size_t ssid_len,
+				      u16 capa_mask, u16 capa_val)
+{
+	struct cfg80211_registered_device *dev = wiphy_to_dev(wiphy);
+	struct cfg80211_internal_bss *bss, *res = NULL;
+
+	spin_lock_bh(&dev->bss_lock);
+
+	list_for_each_entry(bss, &dev->bss_list, list) {
+		if ((bss->pub.capability & capa_mask) != capa_val)
+			continue;
+		if (channel && bss->pub.channel != channel)
+			continue;
+		if (is_bss(&bss->pub, bssid, ssid, ssid_len)) {
+			res = bss;
+			kref_get(&res->ref);
+			break;
+		}
+	}
+
+	spin_unlock_bh(&dev->bss_lock);
+	if (!res)
+		return NULL;
+	return &res->pub;
+}
+EXPORT_SYMBOL(cfg80211_get_bss);
+
+struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy,
+				       struct ieee80211_channel *channel,
+				       const u8 *meshid, size_t meshidlen,
+				       const u8 *meshcfg)
+{
+	struct cfg80211_registered_device *dev = wiphy_to_dev(wiphy);
+	struct cfg80211_internal_bss *bss, *res = NULL;
+
+	spin_lock_bh(&dev->bss_lock);
+
+	list_for_each_entry(bss, &dev->bss_list, list) {
+		if (channel && bss->pub.channel != channel)
+			continue;
+		if (is_mesh(&bss->pub, meshid, meshidlen, meshcfg)) {
+			res = bss;
+			kref_get(&res->ref);
+			break;
+		}
+	}
+
+	spin_unlock_bh(&dev->bss_lock);
+	if (!res)
+		return NULL;
+	return &res->pub;
+}
+EXPORT_SYMBOL(cfg80211_get_mesh);
+
+
+static void rb_insert_bss(struct cfg80211_registered_device *dev,
+			  struct cfg80211_internal_bss *bss)
+{
+	struct rb_node **p = &dev->bss_tree.rb_node;
+	struct rb_node *parent = NULL;
+	struct cfg80211_internal_bss *tbss;
+	int cmp;
+
+	while (*p) {
+		parent = *p;
+		tbss = rb_entry(parent, struct cfg80211_internal_bss, rbn);
+
+		cmp = cmp_bss(&bss->pub, &tbss->pub);
+
+		if (WARN_ON(!cmp)) {
+			/* will sort of leak this BSS */
+			return;
+		}
+
+		if (cmp < 0)
+			p = &(*p)->rb_left;
+		else
+			p = &(*p)->rb_right;
+	}
+
+	rb_link_node(&bss->rbn, parent, p);
+	rb_insert_color(&bss->rbn, &dev->bss_tree);
+}
+
+static struct cfg80211_internal_bss *
+rb_find_bss(struct cfg80211_registered_device *dev,
+	    struct cfg80211_internal_bss *res)
+{
+	struct rb_node *n = dev->bss_tree.rb_node;
+	struct cfg80211_internal_bss *bss;
+	int r;
+
+	while (n) {
+		bss = rb_entry(n, struct cfg80211_internal_bss, rbn);
+		r = cmp_bss(&res->pub, &bss->pub);
+
+		if (r == 0)
+			return bss;
+		else if (r < 0)
+			n = n->rb_left;
+		else
+			n = n->rb_right;
+	}
+
+	return NULL;
+}
+
+static struct cfg80211_internal_bss *
+cfg80211_bss_update(struct cfg80211_registered_device *dev,
+		    struct cfg80211_internal_bss *res,
+		    bool overwrite)
+{
+	struct cfg80211_internal_bss *found = NULL;
+	const u8 *meshid, *meshcfg;
+
+	/*
+	 * The reference to "res" is donated to this function.
+	 */
+
+	if (WARN_ON(!res->pub.channel)) {
+		kref_put(&res->ref, bss_release);
+		return NULL;
+	}
+
+	res->ts = jiffies;
+
+	if (is_zero_ether_addr(res->pub.bssid)) {
+		/* must be mesh, verify */
+		meshid = find_ie(WLAN_EID_MESH_ID, res->pub.information_elements,
+				 res->pub.len_information_elements);
+		meshcfg = find_ie(WLAN_EID_MESH_CONFIG,
+				  res->pub.information_elements,
+				  res->pub.len_information_elements);
+		if (!meshid || !meshcfg ||
+		    meshcfg[1] != IEEE80211_MESH_CONFIG_LEN) {
+			/* bogus mesh */
+			kref_put(&res->ref, bss_release);
+			return NULL;
+		}
+	}
+
+	spin_lock_bh(&dev->bss_lock);
+
+	found = rb_find_bss(dev, res);
+
+	if (found && overwrite) {
+		list_replace(&found->list, &res->list);
+		rb_replace_node(&found->rbn, &res->rbn,
+				&dev->bss_tree);
+		kref_put(&found->ref, bss_release);
+		found = res;
+	} else if (found) {
+		kref_get(&found->ref);
+		found->pub.beacon_interval = res->pub.beacon_interval;
+		found->pub.tsf = res->pub.tsf;
+		found->pub.signal = res->pub.signal;
+		found->pub.capability = res->pub.capability;
+		found->ts = res->ts;
+		kref_put(&res->ref, bss_release);
+	} else {
+		/* this "consumes" the reference */
+		list_add_tail(&res->list, &dev->bss_list);
+		rb_insert_bss(dev, res);
+		found = res;
+	}
+
+	dev->bss_generation++;
+	spin_unlock_bh(&dev->bss_lock);
+
+	kref_get(&found->ref);
+	return found;
+}
+
+struct cfg80211_bss *
+cfg80211_inform_bss_frame(struct wiphy *wiphy,
+			  struct ieee80211_channel *channel,
+			  struct ieee80211_mgmt *mgmt, size_t len,
+			  s32 signal, gfp_t gfp)
+{
+	struct cfg80211_internal_bss *res;
+	size_t ielen = len - offsetof(struct ieee80211_mgmt,
+				      u.probe_resp.variable);
+	bool overwrite;
+	size_t privsz = wiphy->bss_priv_size;
+
+	if (WARN_ON(wiphy->signal_type == NL80211_BSS_SIGNAL_UNSPEC &&
+	            (signal < 0 || signal > 100)))
+		return NULL;
+
+	if (WARN_ON(!mgmt || !wiphy ||
+		    len < offsetof(struct ieee80211_mgmt, u.probe_resp.variable)))
+		return NULL;
+
+	res = kzalloc(sizeof(*res) + privsz + ielen, gfp);
+	if (!res)
+		return NULL;
+
+	memcpy(res->pub.bssid, mgmt->bssid, ETH_ALEN);
+	res->pub.channel = channel;
+	res->pub.signal = signal;
+	res->pub.tsf = le64_to_cpu(mgmt->u.probe_resp.timestamp);
+	res->pub.beacon_interval = le16_to_cpu(mgmt->u.probe_resp.beacon_int);
+	res->pub.capability = le16_to_cpu(mgmt->u.probe_resp.capab_info);
+	/* point to after the private area */
+	res->pub.information_elements = (u8 *)res + sizeof(*res) + privsz;
+	memcpy(res->pub.information_elements, mgmt->u.probe_resp.variable, ielen);
+	res->pub.len_information_elements = ielen;
+
+	kref_init(&res->ref);
+
+	overwrite = ieee80211_is_probe_resp(mgmt->frame_control);
+
+	res = cfg80211_bss_update(wiphy_to_dev(wiphy), res, overwrite);
+	if (!res)
+		return NULL;
+
+	if (res->pub.capability & WLAN_CAPABILITY_ESS)
+		regulatory_hint_found_beacon(wiphy, channel, gfp);
+
+	/* cfg80211_bss_update gives us a referenced result */
+	return &res->pub;
+}
+EXPORT_SYMBOL(cfg80211_inform_bss_frame);
+
+void cfg80211_put_bss(struct cfg80211_bss *pub)
+{
+	struct cfg80211_internal_bss *bss;
+
+	if (!pub)
+		return;
+
+	bss = container_of(pub, struct cfg80211_internal_bss, pub);
+	kref_put(&bss->ref, bss_release);
+}
+EXPORT_SYMBOL(cfg80211_put_bss);
+
+void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *pub)
+{
+	struct cfg80211_registered_device *dev = wiphy_to_dev(wiphy);
+	struct cfg80211_internal_bss *bss;
+
+	if (WARN_ON(!pub))
+		return;
+
+	bss = container_of(pub, struct cfg80211_internal_bss, pub);
+
+	spin_lock_bh(&dev->bss_lock);
+
+	list_del(&bss->list);
+	rb_erase(&bss->rbn, &dev->bss_tree);
+
+	spin_unlock_bh(&dev->bss_lock);
+
+	kref_put(&bss->ref, bss_release);
+}
+EXPORT_SYMBOL(cfg80211_unlink_bss);
+
+void cfg80211_hold_bss(struct cfg80211_bss *pub)
+{
+	struct cfg80211_internal_bss *bss;
+
+	if (!pub)
+		return;
+
+	bss = container_of(pub, struct cfg80211_internal_bss, pub);
+	bss->hold = true;
+}
+EXPORT_SYMBOL(cfg80211_hold_bss);
+
+void cfg80211_unhold_bss(struct cfg80211_bss *pub)
+{
+	struct cfg80211_internal_bss *bss;
+
+	if (!pub)
+		return;
+
+	bss = container_of(pub, struct cfg80211_internal_bss, pub);
+	bss->hold = false;
+}
+EXPORT_SYMBOL(cfg80211_unhold_bss);
+
+#ifdef CONFIG_WIRELESS_EXT
+int cfg80211_wext_siwscan(struct net_device *dev,
+			  struct iw_request_info *info,
+			  union iwreq_data *wrqu, char *extra)
+{
+	struct cfg80211_registered_device *rdev;
+	struct wiphy *wiphy;
+	struct iw_scan_req *wreq = NULL;
+	struct cfg80211_scan_request *creq;
+	int i, err, n_channels = 0;
+	enum ieee80211_band band;
+
+	if (!netif_running(dev))
+		return -ENETDOWN;
+
+	rdev = cfg80211_get_dev_from_ifindex(dev->ifindex);
+
+	if (IS_ERR(rdev))
+		return PTR_ERR(rdev);
+
+	if (rdev->scan_req) {
+		err = -EBUSY;
+		goto out;
+	}
+
+	wiphy = &rdev->wiphy;
+
+	for (band = 0; band < IEEE80211_NUM_BANDS; band++)
+		if (wiphy->bands[band])
+			n_channels += wiphy->bands[band]->n_channels;
+
+	creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
+		       n_channels * sizeof(void *),
+		       GFP_ATOMIC);
+	if (!creq) {
+		err = -ENOMEM;
+		goto out;
+	}
+
+	creq->wiphy = wiphy;
+	creq->ifidx = dev->ifindex;
+	creq->ssids = (void *)(creq + 1);
+	creq->channels = (void *)(creq->ssids + 1);
+	creq->n_channels = n_channels;
+	creq->n_ssids = 1;
+
+	/* all channels */
+	i = 0;
+	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+		int j;
+		if (!wiphy->bands[band])
+			continue;
+		for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
+			creq->channels[i] = &wiphy->bands[band]->channels[j];
+			i++;
+		}
+	}
+
+	/* translate scan request */
+	if (wrqu->data.length == sizeof(struct iw_scan_req)) {
+		wreq = (struct iw_scan_req *)extra;
+
+		if (wrqu->data.flags & IW_SCAN_THIS_ESSID) {
+			if (wreq->essid_len > IEEE80211_MAX_SSID_LEN)
+				return -EINVAL;
+			memcpy(creq->ssids[0].ssid, wreq->essid, wreq->essid_len);
+			creq->ssids[0].ssid_len = wreq->essid_len;
+		}
+		if (wreq->scan_type == IW_SCAN_TYPE_PASSIVE)
+			creq->n_ssids = 0;
+	}
+
+	rdev->scan_req = creq;
+	err = rdev->ops->scan(wiphy, dev, creq);
+	if (err) {
+		rdev->scan_req = NULL;
+		kfree(creq);
+	}
+ out:
+	cfg80211_put_dev(rdev);
+	return err;
+}
+EXPORT_SYMBOL(cfg80211_wext_siwscan);
+
+static void ieee80211_scan_add_ies(struct iw_request_info *info,
+				   struct cfg80211_bss *bss,
+				   char **current_ev, char *end_buf)
+{
+	u8 *pos, *end, *next;
+	struct iw_event iwe;
+
+	if (!bss->information_elements ||
+	    !bss->len_information_elements)
+		return;
+
+	/*
+	 * If needed, fragment the IEs buffer (at IE boundaries) into short
+	 * enough fragments to fit into IW_GENERIC_IE_MAX octet messages.
+	 */
+	pos = bss->information_elements;
+	end = pos + bss->len_information_elements;
+
+	while (end - pos > IW_GENERIC_IE_MAX) {
+		next = pos + 2 + pos[1];
+		while (next + 2 + next[1] - pos < IW_GENERIC_IE_MAX)
+			next = next + 2 + next[1];
+
+		memset(&iwe, 0, sizeof(iwe));
+		iwe.cmd = IWEVGENIE;
+		iwe.u.data.length = next - pos;
+		*current_ev = iwe_stream_add_point(info, *current_ev,
+						   end_buf, &iwe, pos);
+
+		pos = next;
+	}
+
+	if (end > pos) {
+		memset(&iwe, 0, sizeof(iwe));
+		iwe.cmd = IWEVGENIE;
+		iwe.u.data.length = end - pos;
+		*current_ev = iwe_stream_add_point(info, *current_ev,
+						   end_buf, &iwe, pos);
+	}
+}
+
+static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
+{
+	unsigned long end = jiffies;
+
+	if (end >= start)
+		return jiffies_to_msecs(end - start);
+
+	return jiffies_to_msecs(end + (MAX_JIFFY_OFFSET - start) + 1);
+}
+
+static char *
+ieee80211_bss(struct wiphy *wiphy, struct iw_request_info *info,
+	      struct cfg80211_internal_bss *bss, char *current_ev,
+	      char *end_buf)
+{
+	struct iw_event iwe;
+	u8 *buf, *cfg, *p;
+	u8 *ie = bss->pub.information_elements;
+	int rem = bss->pub.len_information_elements, i, sig;
+	bool ismesh = false;
+
+	memset(&iwe, 0, sizeof(iwe));
+	iwe.cmd = SIOCGIWAP;
+	iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
+	memcpy(iwe.u.ap_addr.sa_data, bss->pub.bssid, ETH_ALEN);
+	current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
+					  IW_EV_ADDR_LEN);
+
+	memset(&iwe, 0, sizeof(iwe));
+	iwe.cmd = SIOCGIWFREQ;
+	iwe.u.freq.m = ieee80211_frequency_to_channel(bss->pub.channel->center_freq);
+	iwe.u.freq.e = 0;
+	current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
+					  IW_EV_FREQ_LEN);
+
+	memset(&iwe, 0, sizeof(iwe));
+	iwe.cmd = SIOCGIWFREQ;
+	iwe.u.freq.m = bss->pub.channel->center_freq;
+	iwe.u.freq.e = 6;
+	current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
+					  IW_EV_FREQ_LEN);
+
+	if (wiphy->signal_type != CFG80211_SIGNAL_TYPE_NONE) {
+		memset(&iwe, 0, sizeof(iwe));
+		iwe.cmd = IWEVQUAL;
+		iwe.u.qual.updated = IW_QUAL_LEVEL_UPDATED |
+				     IW_QUAL_NOISE_INVALID |
+				     IW_QUAL_QUAL_UPDATED;
+		switch (wiphy->signal_type) {
+		case CFG80211_SIGNAL_TYPE_MBM:
+			sig = bss->pub.signal / 100;
+			iwe.u.qual.level = sig;
+			iwe.u.qual.updated |= IW_QUAL_DBM;
+			if (sig < -110)		/* rather bad */
+				sig = -110;
+			else if (sig > -40)	/* perfect */
+				sig = -40;
+			/* will give a range of 0 .. 70 */
+			iwe.u.qual.qual = sig + 110;
+			break;
+		case CFG80211_SIGNAL_TYPE_UNSPEC:
+			iwe.u.qual.level = bss->pub.signal;
+			/* will give range 0 .. 100 */
+			iwe.u.qual.qual = bss->pub.signal;
+			break;
+		default:
+			/* not reached */
+			break;
+		}
+		current_ev = iwe_stream_add_event(info, current_ev, end_buf,
+						  &iwe, IW_EV_QUAL_LEN);
+	}
+
+	memset(&iwe, 0, sizeof(iwe));
+	iwe.cmd = SIOCGIWENCODE;
+	if (bss->pub.capability & WLAN_CAPABILITY_PRIVACY)
+		iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
+	else
+		iwe.u.data.flags = IW_ENCODE_DISABLED;
+	iwe.u.data.length = 0;
+	current_ev = iwe_stream_add_point(info, current_ev, end_buf,
+					  &iwe, "");
+
+	while (rem >= 2) {
+		/* invalid data */
+		if (ie[1] > rem - 2)
+			break;
+
+		switch (ie[0]) {
+		case WLAN_EID_SSID:
+			memset(&iwe, 0, sizeof(iwe));
+			iwe.cmd = SIOCGIWESSID;
+			iwe.u.data.length = ie[1];
+			iwe.u.data.flags = 1;
+			current_ev = iwe_stream_add_point(info, current_ev, end_buf,
+							  &iwe, ie + 2);
+			break;
+		case WLAN_EID_MESH_ID:
+			memset(&iwe, 0, sizeof(iwe));
+			iwe.cmd = SIOCGIWESSID;
+			iwe.u.data.length = ie[1];
+			iwe.u.data.flags = 1;
+			current_ev = iwe_stream_add_point(info, current_ev, end_buf,
+							  &iwe, ie + 2);
+			break;
+		case WLAN_EID_MESH_CONFIG:
+			ismesh = true;
+			if (ie[1] != IEEE80211_MESH_CONFIG_LEN)
+				break;
+			buf = kmalloc(50, GFP_ATOMIC);
+			if (!buf)
+				break;
+			cfg = ie + 2;
+			memset(&iwe, 0, sizeof(iwe));
+			iwe.cmd = IWEVCUSTOM;
+			sprintf(buf, "Mesh network (version %d)", cfg[0]);
+			iwe.u.data.length = strlen(buf);
+			current_ev = iwe_stream_add_point(info, current_ev,
+							  end_buf,
+							  &iwe, buf);
+			sprintf(buf, "Path Selection Protocol ID: "
+				"0x%02X%02X%02X%02X", cfg[1], cfg[2], cfg[3],
+							cfg[4]);
+			iwe.u.data.length = strlen(buf);
+			current_ev = iwe_stream_add_point(info, current_ev,
+							  end_buf,
+							  &iwe, buf);
+			sprintf(buf, "Path Selection Metric ID: "
+				"0x%02X%02X%02X%02X", cfg[5], cfg[6], cfg[7],
+							cfg[8]);
+			iwe.u.data.length = strlen(buf);
+			current_ev = iwe_stream_add_point(info, current_ev,
+							  end_buf,
+							  &iwe, buf);
+			sprintf(buf, "Congestion Control Mode ID: "
+				"0x%02X%02X%02X%02X", cfg[9], cfg[10],
+							cfg[11], cfg[12]);
+			iwe.u.data.length = strlen(buf);
+			current_ev = iwe_stream_add_point(info, current_ev,
+							  end_buf,
+							  &iwe, buf);
+			sprintf(buf, "Channel Precedence: "
+				"0x%02X%02X%02X%02X", cfg[13], cfg[14],
+							cfg[15], cfg[16]);
+			iwe.u.data.length = strlen(buf);
+			current_ev = iwe_stream_add_point(info, current_ev,
+							  end_buf,
+							  &iwe, buf);
+			kfree(buf);
+			break;
+		case WLAN_EID_SUPP_RATES:
+		case WLAN_EID_EXT_SUPP_RATES:
+			/* display all supported rates in readable format */
+			p = current_ev + iwe_stream_lcp_len(info);
+
+			memset(&iwe, 0, sizeof(iwe));
+			iwe.cmd = SIOCGIWRATE;
+			/* Those two flags are ignored... */
+			iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
+
+			for (i = 0; i < ie[1]; i++) {
+				iwe.u.bitrate.value =
+					((ie[i + 2] & 0x7f) * 500000);
+				p = iwe_stream_add_value(info, current_ev, p,
+						end_buf, &iwe, IW_EV_PARAM_LEN);
+			}
+			current_ev = p;
+			break;
+		}
+		rem -= ie[1] + 2;
+		ie += ie[1] + 2;
+	}
+
+	if (bss->pub.capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)
+	    || ismesh) {
+		memset(&iwe, 0, sizeof(iwe));
+		iwe.cmd = SIOCGIWMODE;
+		if (ismesh)
+			iwe.u.mode = IW_MODE_MESH;
+		else if (bss->pub.capability & WLAN_CAPABILITY_ESS)
+			iwe.u.mode = IW_MODE_MASTER;
+		else
+			iwe.u.mode = IW_MODE_ADHOC;
+		current_ev = iwe_stream_add_event(info, current_ev, end_buf,
+						  &iwe, IW_EV_UINT_LEN);
+	}
+
+	buf = kmalloc(30, GFP_ATOMIC);
+	if (buf) {
+		memset(&iwe, 0, sizeof(iwe));
+		iwe.cmd = IWEVCUSTOM;
+		sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->pub.tsf));
+		iwe.u.data.length = strlen(buf);
+		current_ev = iwe_stream_add_point(info, current_ev, end_buf,
+						  &iwe, buf);
+		memset(&iwe, 0, sizeof(iwe));
+		iwe.cmd = IWEVCUSTOM;
+		sprintf(buf, " Last beacon: %ums ago",
+			elapsed_jiffies_msecs(bss->ts));
+		iwe.u.data.length = strlen(buf);
+		current_ev = iwe_stream_add_point(info, current_ev,
+						  end_buf, &iwe, buf);
+		kfree(buf);
+	}
+
+	ieee80211_scan_add_ies(info, &bss->pub, &current_ev, end_buf);
+
+	return current_ev;
+}
+
+
+static int ieee80211_scan_results(struct cfg80211_registered_device *dev,
+				  struct iw_request_info *info,
+				  char *buf, size_t len)
+{
+	char *current_ev = buf;
+	char *end_buf = buf + len;
+	struct cfg80211_internal_bss *bss;
+
+	spin_lock_bh(&dev->bss_lock);
+	cfg80211_bss_expire(dev);
+
+	list_for_each_entry(bss, &dev->bss_list, list) {
+		if (buf + len - current_ev <= IW_EV_ADDR_LEN) {
+			spin_unlock_bh(&dev->bss_lock);
+			return -E2BIG;
+		}
+		current_ev = ieee80211_bss(&dev->wiphy, info, bss,
+					   current_ev, end_buf);
+	}
+	spin_unlock_bh(&dev->bss_lock);
+	return current_ev - buf;
+}
+
+
+int cfg80211_wext_giwscan(struct net_device *dev,
+			  struct iw_request_info *info,
+			  struct iw_point *data, char *extra)
+{
+	struct cfg80211_registered_device *rdev;
+	int res;
+
+	if (!netif_running(dev))
+		return -ENETDOWN;
+
+	rdev = cfg80211_get_dev_from_ifindex(dev->ifindex);
+
+	if (IS_ERR(rdev))
+		return PTR_ERR(rdev);
+
+	if (rdev->scan_req) {
+		res = -EAGAIN;
+		goto out;
+	}
+
+	res = ieee80211_scan_results(rdev, info, extra, data->length);
+	data->length = 0;
+	if (res >= 0) {
+		data->length = res;
+		res = 0;
+	}
+
+ out:
+	cfg80211_put_dev(rdev);
+	return res;
+}
+EXPORT_SYMBOL(cfg80211_wext_giwscan);
+#endif
diff --git a/net/wireless/sysfs.c b/net/wireless/sysfs.c
index 79a382877641..efe3c5c92b2d 100644
--- a/net/wireless/sysfs.c
+++ b/net/wireless/sysfs.c
@@ -31,7 +31,7 @@ static ssize_t name ## _show(struct device *dev,			\
 	return sprintf(buf, fmt "\n", dev_to_rdev(dev)->member);	\
 }
 
-SHOW_FMT(index, "%d", idx);
+SHOW_FMT(index, "%d", wiphy_idx);
 SHOW_FMT(macaddress, "%pM", wiphy.perm_addr);
 
 static struct device_attribute ieee80211_dev_attrs[] = {
@@ -55,6 +55,41 @@ static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env)
 }
 #endif
 
+static int wiphy_suspend(struct device *dev, pm_message_t state)
+{
+	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
+	int ret = 0;
+
+	rdev->suspend_at = get_seconds();
+
+	if (rdev->ops->suspend) {
+		rtnl_lock();
+		ret = rdev->ops->suspend(&rdev->wiphy);
+		rtnl_unlock();
+	}
+
+	return ret;
+}
+
+static int wiphy_resume(struct device *dev)
+{
+	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
+	int ret = 0;
+
+	/* Age scan results with time spent in suspend */
+	spin_lock_bh(&rdev->bss_lock);
+	cfg80211_bss_age(rdev, get_seconds() - rdev->suspend_at);
+	spin_unlock_bh(&rdev->bss_lock);
+
+	if (rdev->ops->resume) {
+		rtnl_lock();
+		ret = rdev->ops->resume(&rdev->wiphy);
+		rtnl_unlock();
+	}
+
+	return ret;
+}
+
 struct class ieee80211_class = {
 	.name = "ieee80211",
 	.owner = THIS_MODULE,
@@ -63,6 +98,8 @@ struct class ieee80211_class = {
 #ifdef CONFIG_HOTPLUG
 	.dev_uevent = wiphy_uevent,
 #endif
+	.suspend = wiphy_suspend,
+	.resume = wiphy_resume,
 };
 
 int wiphy_sysfs_init(void)
diff --git a/net/wireless/util.c b/net/wireless/util.c
index e76cc28b0345..487cdd9bcffc 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -9,7 +9,7 @@
 
 struct ieee80211_rate *
 ieee80211_get_response_rate(struct ieee80211_supported_band *sband,
-			    u64 basic_rates, int bitrate)
+			    u32 basic_rates, int bitrate)
 {
 	struct ieee80211_rate *result = &sband->bitrates[0];
 	int i;
diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index 58e489fd4aed..0fd1db6e95bb 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -66,6 +66,7 @@ int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
 	struct cfg80211_registered_device *rdev;
 	struct vif_params vifparams;
 	enum nl80211_iftype type;
+	int ret;
 
 	if (!wdev)
 		return -EOPNOTSUPP;
@@ -96,10 +97,16 @@ int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
 		return -EINVAL;
 	}
 
+	if (type == wdev->iftype)
+		return 0;
+
 	memset(&vifparams, 0, sizeof(vifparams));
 
-	return rdev->ops->change_virtual_intf(wdev->wiphy, dev->ifindex, type,
-					      NULL, &vifparams);
+	ret = rdev->ops->change_virtual_intf(wdev->wiphy, dev->ifindex, type,
+					     NULL, &vifparams);
+	WARN_ON(!ret && wdev->iftype != type);
+
+	return ret;
 }
 EXPORT_SYMBOL(cfg80211_wext_siwmode);
 
@@ -137,3 +144,100 @@ int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
 	return 0;
 }
 EXPORT_SYMBOL(cfg80211_wext_giwmode);
+
+
+int cfg80211_wext_giwrange(struct net_device *dev,
+			   struct iw_request_info *info,
+			   struct iw_point *data, char *extra)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct iw_range *range = (struct iw_range *) extra;
+	enum ieee80211_band band;
+	int c = 0;
+
+	if (!wdev)
+		return -EOPNOTSUPP;
+
+	data->length = sizeof(struct iw_range);
+	memset(range, 0, sizeof(struct iw_range));
+
+	range->we_version_compiled = WIRELESS_EXT;
+	range->we_version_source = 21;
+	range->retry_capa = IW_RETRY_LIMIT;
+	range->retry_flags = IW_RETRY_LIMIT;
+	range->min_retry = 0;
+	range->max_retry = 255;
+	range->min_rts = 0;
+	range->max_rts = 2347;
+	range->min_frag = 256;
+	range->max_frag = 2346;
+
+	range->encoding_size[0] = 5;
+	range->encoding_size[1] = 13;
+	range->num_encoding_sizes = 2;
+	range->max_encoding_tokens = 4;
+
+	range->max_qual.updated = IW_QUAL_NOISE_INVALID;
+
+	switch (wdev->wiphy->signal_type) {
+	case CFG80211_SIGNAL_TYPE_NONE:
+		break;
+	case CFG80211_SIGNAL_TYPE_MBM:
+		range->max_qual.level = -110;
+		range->max_qual.qual = 70;
+		range->avg_qual.qual = 35;
+		range->max_qual.updated |= IW_QUAL_DBM;
+		range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
+		range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
+		break;
+	case CFG80211_SIGNAL_TYPE_UNSPEC:
+		range->max_qual.level = 100;
+		range->max_qual.qual = 100;
+		range->avg_qual.qual = 50;
+		range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
+		range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
+		break;
+	}
+
+	range->avg_qual.level = range->max_qual.level / 2;
+	range->avg_qual.noise = range->max_qual.noise / 2;
+	range->avg_qual.updated = range->max_qual.updated;
+
+	range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
+			  IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
+
+
+	for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
+		int i;
+		struct ieee80211_supported_band *sband;
+
+		sband = wdev->wiphy->bands[band];
+
+		if (!sband)
+			continue;
+
+		for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
+			struct ieee80211_channel *chan = &sband->channels[i];
+
+			if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
+				range->freq[c].i =
+					ieee80211_frequency_to_channel(
+						chan->center_freq);
+				range->freq[c].m = chan->center_freq;
+				range->freq[c].e = 6;
+				c++;
+			}
+		}
+	}
+	range->num_channels = c;
+	range->num_frequency = c;
+
+	IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
+	IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
+	IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
+
+	range->scan_capa |= IW_SCAN_CAPA_ESSID;
+
+	return 0;
+}
+EXPORT_SYMBOL(cfg80211_wext_giwrange);