Fixed MTP to work with TWRP

net/wireless/Kconfig

@@ -0,0 +1,220 @@
+config WIRELESS_EXT
+	bool
+
+config WEXT_CORE
+	def_bool y
+	depends on CFG80211_WEXT || WIRELESS_EXT
+
+config WEXT_PROC
+	def_bool y
+	depends on PROC_FS
+	depends on WEXT_CORE
+
+config WEXT_SPY
+	bool
+
+config WEXT_PRIV
+	bool
+
+config CFG80211
+	tristate "cfg80211 - wireless configuration API"
+	depends on RFKILL || !RFKILL
+	---help---
+	  cfg80211 is the Linux wireless LAN (802.11) configuration API.
+	  Enable this if you have a wireless device.
+
+	  For more information refer to documentation on the wireless wiki:
+
+	  http://wireless.kernel.org/en/developers/Documentation/cfg80211
+
+	  When built as a module it will be called cfg80211.
+
+config NL80211_TESTMODE
+	bool "nl80211 testmode command"
+	depends on CFG80211
+	help
+	  The nl80211 testmode command helps implementing things like
+	  factory calibration or validation tools for wireless chips.
+
+	  Select this option ONLY for kernels that are specifically
+	  built for such purposes.
+
+	  Debugging tools that are supposed to end up in the hands of
+	  users should better be implemented with debugfs.
+
+	  Say N.
+
+config CFG80211_DEVELOPER_WARNINGS
+	bool "enable developer warnings"
+	depends on CFG80211
+	default n
+	help
+	  This option enables some additional warnings that help
+	  cfg80211 developers and driver developers, but that can
+	  trigger due to races with userspace.
+
+	  For example, when a driver reports that it was disconnected
+	  from the AP, but the user disconnects manually at the same
+	  time, the warning might trigger spuriously due to races.
+
+	  Say Y only if you are developing cfg80211 or a driver based
+	  on it (or mac80211).
+
+
+config CFG80211_REG_DEBUG
+	bool "cfg80211 regulatory debugging"
+	depends on CFG80211
+	default n
+	---help---
+	  You can enable this if you want to debug regulatory changes.
+	  For more information on cfg80211 regulatory refer to the wireless
+	  wiki:
+
+	  http://wireless.kernel.org/en/developers/Regulatory
+
+	  If unsure, say N.
+
+config CFG80211_CERTIFICATION_ONUS
+	bool "cfg80211 certification onus"
+	depends on CFG80211 && EXPERT
+	default n
+	---help---
+	  You should disable this option unless you are both capable
+	  and willing to ensure your system will remain regulatory
+	  compliant with the features available under this option.
+	  Some options may still be under heavy development and
+	  for whatever reason regulatory compliance has not or
+	  cannot yet be verified. Regulatory verification may at
+	  times only be possible until you have the final system
+	  in place.
+
+	  This option should only be enabled by system integrators
+	  or distributions that have done work necessary to ensure
+	  regulatory certification on the system with the enabled
+	  features. Alternatively you can enable this option if
+	  you are a wireless researcher and are working in a controlled
+	  and approved environment by your local regulatory agency.
+
+config CFG80211_REG_CELLULAR_HINTS
+	bool "cfg80211 regulatory support for cellular base station hints"
+	depends on CFG80211_CERTIFICATION_ONUS
+	---help---
+	  This option enables support for parsing regulatory hints
+	  from cellular base stations. If enabled and at least one driver
+	  claims support for parsing cellular base station hints the
+	  regulatory core will allow and parse these regulatory hints.
+	  The regulatory core will only apply these regulatory hints on
+	  drivers that support this feature. You should only enable this
+	  feature if you have tested and validated this feature on your
+	  systems.
+
+config CFG80211_REG_RELAX_NO_IR
+	bool "cfg80211 support for NO_IR relaxation"
+	depends on CFG80211_CERTIFICATION_ONUS
+	---help---
+	 This option enables support for relaxation of the NO_IR flag for
+	 situations that certain regulatory bodies have provided clarifications
+	 on how relaxation can occur. This feature has an inherent dependency on
+	 userspace features which must have been properly tested and as such is
+	 not enabled by default.
+
+	 A relaxation feature example is allowing the operation of a P2P group
+	 owner (GO) on channels marked with NO_IR if there is an additional BSS
+	 interface which associated to an AP which userspace assumes or confirms
+	 to be an authorized master, i.e., with radar detection support and DFS
+	 capabilities. However, note that in order to not create daisy chain
+	 scenarios, this relaxation is not allowed in cases that the BSS client
+	 is associated to P2P GO and in addition the P2P GO instantiated on
+	 a channel due to this relaxation should not allow connection from
+	 non P2P clients.
+
+	 The regulatory core will apply these relaxations only for drivers that
+	 support this feature by declaring the appropriate channel flags and
+	 capabilities in their registration flow.
+
+config CFG80211_DEFAULT_PS
+	bool "enable powersave by default"
+	depends on CFG80211
+	default y
+	help
+	  This option enables powersave mode by default.
+
+	  If this causes your applications to misbehave you should fix your
+	  applications instead -- they need to register their network
+	  latency requirement, see Documentation/power/pm_qos_interface.txt.
+
+config CFG80211_DEBUGFS
+	bool "cfg80211 DebugFS entries"
+	depends on CFG80211
+	depends on DEBUG_FS
+	---help---
+	  You can enable this if you want to debugfs entries for cfg80211.
+
+	  If unsure, say N.
+
+config CFG80211_INTERNAL_REGDB
+	bool "use statically compiled regulatory rules database" if EXPERT
+	default n
+	depends on CFG80211
+	---help---
+	  This option generates an internal data structure representing
+	  the wireless regulatory rules described in net/wireless/db.txt
+	  and includes code to query that database.  This is an alternative
+	  to using CRDA for defining regulatory rules for the kernel.
+
+	  Using this option requires some parsing of the db.txt at build time,
+	  the parser will be upkept with the latest wireless-regdb updates but
+	  older wireless-regdb formats will be ignored. The parser may later
+	  be replaced to avoid issues with conflicts on versions of
+	  wireless-regdb.
+
+	  For details see:
+
+	  http://wireless.kernel.org/en/developers/Regulatory
+
+	  Most distributions have a CRDA package.  So if unsure, say N.
+
+config CFG80211_WEXT
+	bool "cfg80211 wireless extensions compatibility"
+	depends on CFG80211
+	select WEXT_CORE
+	help
+	  Enable this option if you need old userspace for wireless
+	  extensions with cfg80211-based drivers.
+
+config CFG80211_REG_NOT_UPDATED
+	bool "Do not update Regulatory configuration"
+	depends on CFG80211
+	default n
+	help
+	  Regulation should not updated even if device found other country
+	  Access Point Beacon once since device should find around other
+	  Access Points.
+
+config LIB80211
+	tristate
+	default n
+	help
+	  This options enables a library of common routines used
+	  by IEEE802.11 wireless LAN drivers.
+
+	  Drivers should select this themselves if needed.
+
+config LIB80211_CRYPT_WEP
+	tristate
+
+config LIB80211_CRYPT_CCMP
+	tristate
+
+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.

net/wireless/Makefile

@@ -0,0 +1,25 @@
+obj-$(CONFIG_CFG80211) += cfg80211.o
+obj-$(CONFIG_LIB80211) += lib80211.o
+obj-$(CONFIG_LIB80211_CRYPT_WEP) += lib80211_crypt_wep.o
+obj-$(CONFIG_LIB80211_CRYPT_CCMP) += lib80211_crypt_ccmp.o
+obj-$(CONFIG_LIB80211_CRYPT_TKIP) += lib80211_crypt_tkip.o
+
+obj-$(CONFIG_WEXT_CORE) += wext-core.o
+obj-$(CONFIG_WEXT_PROC) += wext-proc.o
+obj-$(CONFIG_WEXT_SPY) += wext-spy.o
+obj-$(CONFIG_WEXT_PRIV) += wext-priv.o
+
+cfg80211-y += core.o sysfs.o radiotap.o util.o reg.o scan.o nl80211.o
+cfg80211-y += mlme.o ibss.o sme.o chan.o ethtool.o mesh.o ap.o trace.o
+cfg80211-$(CONFIG_CFG80211_DEBUGFS) += debugfs.o
+cfg80211-$(CONFIG_CFG80211_WEXT) += wext-compat.o wext-sme.o
+cfg80211-$(CONFIG_CFG80211_INTERNAL_REGDB) += regdb.o
+
+CFLAGS_trace.o := -I$(src)
+
+ccflags-y += -D__CHECK_ENDIAN__
+
+$(obj)/regdb.c: $(src)/db.txt $(src)/genregdb.awk
+	@$(AWK) -f $(srctree)/$(src)/genregdb.awk < $< > $@
+
+clean-files := regdb.c

net/wireless/ap.c

@@ -0,0 +1,51 @@
+#include <linux/ieee80211.h>
+#include <linux/export.h>
+#include <net/cfg80211.h>
+#include "nl80211.h"
+#include "core.h"
+#include "rdev-ops.h"
+
+
+int __cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
+		       struct net_device *dev, bool notify)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	int err;
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (!rdev->ops->stop_ap)
+		return -EOPNOTSUPP;
+
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
+	    dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
+		return -EOPNOTSUPP;
+
+	if (!wdev->beacon_interval)
+		return -ENOENT;
+
+	err = rdev_stop_ap(rdev, dev);
+	if (!err) {
+		wdev->beacon_interval = 0;
+		memset(&wdev->chandef, 0, sizeof(wdev->chandef));
+		wdev->ssid_len = 0;
+		rdev_set_qos_map(rdev, dev, NULL);
+		if (notify)
+			nl80211_send_ap_stopped(wdev);
+	}
+
+	return err;
+}
+
+int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
+		     struct net_device *dev, bool notify)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	int err;
+
+	wdev_lock(wdev);
+	err = __cfg80211_stop_ap(rdev, dev, notify);
+	wdev_unlock(wdev);
+
+	return err;
+}

net/wireless/chan.c

@@ -0,0 +1,908 @@
+/*
+ * This file contains helper code to handle channel
+ * settings and keeping track of what is possible at
+ * any point in time.
+ *
+ * Copyright 2009	Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2013-2014  Intel Mobile Communications GmbH
+ */
+
+#include <linux/export.h>
+#include <net/cfg80211.h>
+#include "core.h"
+#include "rdev-ops.h"
+
+void cfg80211_chandef_create(struct cfg80211_chan_def *chandef,
+			     struct ieee80211_channel *chan,
+			     enum nl80211_channel_type chan_type)
+{
+	if (WARN_ON(!chan))
+		return;
+
+	chandef->chan = chan;
+	chandef->center_freq2 = 0;
+
+	switch (chan_type) {
+	case NL80211_CHAN_NO_HT:
+		chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
+		chandef->center_freq1 = chan->center_freq;
+		break;
+	case NL80211_CHAN_HT20:
+		chandef->width = NL80211_CHAN_WIDTH_20;
+		chandef->center_freq1 = chan->center_freq;
+		break;
+	case NL80211_CHAN_HT40PLUS:
+		chandef->width = NL80211_CHAN_WIDTH_40;
+		chandef->center_freq1 = chan->center_freq + 10;
+		break;
+	case NL80211_CHAN_HT40MINUS:
+		chandef->width = NL80211_CHAN_WIDTH_40;
+		chandef->center_freq1 = chan->center_freq - 10;
+		break;
+	default:
+		WARN_ON(1);
+	}
+}
+EXPORT_SYMBOL(cfg80211_chandef_create);
+
+bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef)
+{
+	u32 control_freq;
+
+	if (!chandef->chan)
+		return false;
+
+	control_freq = chandef->chan->center_freq;
+
+	switch (chandef->width) {
+	case NL80211_CHAN_WIDTH_5:
+	case NL80211_CHAN_WIDTH_10:
+	case NL80211_CHAN_WIDTH_20:
+	case NL80211_CHAN_WIDTH_20_NOHT:
+		if (chandef->center_freq1 != control_freq)
+			return false;
+		if (chandef->center_freq2)
+			return false;
+		break;
+	case NL80211_CHAN_WIDTH_40:
+		if (chandef->center_freq1 != control_freq + 10 &&
+		    chandef->center_freq1 != control_freq - 10)
+			return false;
+		if (chandef->center_freq2)
+			return false;
+		break;
+	case NL80211_CHAN_WIDTH_80P80:
+		if (chandef->center_freq1 != control_freq + 30 &&
+		    chandef->center_freq1 != control_freq + 10 &&
+		    chandef->center_freq1 != control_freq - 10 &&
+		    chandef->center_freq1 != control_freq - 30)
+			return false;
+		if (!chandef->center_freq2)
+			return false;
+		/* adjacent is not allowed -- that's a 160 MHz channel */
+		if (chandef->center_freq1 - chandef->center_freq2 == 80 ||
+		    chandef->center_freq2 - chandef->center_freq1 == 80)
+			return false;
+		break;
+	case NL80211_CHAN_WIDTH_80:
+		if (chandef->center_freq1 != control_freq + 30 &&
+		    chandef->center_freq1 != control_freq + 10 &&
+		    chandef->center_freq1 != control_freq - 10 &&
+		    chandef->center_freq1 != control_freq - 30)
+			return false;
+		if (chandef->center_freq2)
+			return false;
+		break;
+	case NL80211_CHAN_WIDTH_160:
+		if (chandef->center_freq1 != control_freq + 70 &&
+		    chandef->center_freq1 != control_freq + 50 &&
+		    chandef->center_freq1 != control_freq + 30 &&
+		    chandef->center_freq1 != control_freq + 10 &&
+		    chandef->center_freq1 != control_freq - 10 &&
+		    chandef->center_freq1 != control_freq - 30 &&
+		    chandef->center_freq1 != control_freq - 50 &&
+		    chandef->center_freq1 != control_freq - 70)
+			return false;
+		if (chandef->center_freq2)
+			return false;
+		break;
+	default:
+		return false;
+	}
+
+	return true;
+}
+EXPORT_SYMBOL(cfg80211_chandef_valid);
+
+static void chandef_primary_freqs(const struct cfg80211_chan_def *c,
+				  int *pri40, int *pri80)
+{
+	int tmp;
+
+	switch (c->width) {
+	case NL80211_CHAN_WIDTH_40:
+		*pri40 = c->center_freq1;
+		*pri80 = 0;
+		break;
+	case NL80211_CHAN_WIDTH_80:
+	case NL80211_CHAN_WIDTH_80P80:
+		*pri80 = c->center_freq1;
+		/* n_P20 */
+		tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
+		/* n_P40 */
+		tmp /= 2;
+		/* freq_P40 */
+		*pri40 = c->center_freq1 - 20 + 40 * tmp;
+		break;
+	case NL80211_CHAN_WIDTH_160:
+		/* n_P20 */
+		tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
+		/* n_P40 */
+		tmp /= 2;
+		/* freq_P40 */
+		*pri40 = c->center_freq1 - 60 + 40 * tmp;
+		/* n_P80 */
+		tmp /= 2;
+		*pri80 = c->center_freq1 - 40 + 80 * tmp;
+		break;
+	default:
+		WARN_ON_ONCE(1);
+	}
+}
+
+static int cfg80211_chandef_get_width(const struct cfg80211_chan_def *c)
+{
+	int width;
+
+	switch (c->width) {
+	case NL80211_CHAN_WIDTH_5:
+		width = 5;
+		break;
+	case NL80211_CHAN_WIDTH_10:
+		width = 10;
+		break;
+	case NL80211_CHAN_WIDTH_20:
+	case NL80211_CHAN_WIDTH_20_NOHT:
+		width = 20;
+		break;
+	case NL80211_CHAN_WIDTH_40:
+		width = 40;
+		break;
+	case NL80211_CHAN_WIDTH_80P80:
+	case NL80211_CHAN_WIDTH_80:
+		width = 80;
+		break;
+	case NL80211_CHAN_WIDTH_160:
+		width = 160;
+		break;
+	default:
+		WARN_ON_ONCE(1);
+		return -1;
+	}
+	return width;
+}
+
+const struct cfg80211_chan_def *
+cfg80211_chandef_compatible(const struct cfg80211_chan_def *c1,
+			    const struct cfg80211_chan_def *c2)
+{
+	u32 c1_pri40, c1_pri80, c2_pri40, c2_pri80;
+
+	/* If they are identical, return */
+	if (cfg80211_chandef_identical(c1, c2))
+		return c1;
+
+	/* otherwise, must have same control channel */
+	if (c1->chan != c2->chan)
+		return NULL;
+
+	/*
+	 * If they have the same width, but aren't identical,
+	 * then they can't be compatible.
+	 */
+	if (c1->width == c2->width)
+		return NULL;
+
+	/*
+	 * can't be compatible if one of them is 5 or 10 MHz,
+	 * but they don't have the same width.
+	 */
+	if (c1->width == NL80211_CHAN_WIDTH_5 ||
+	    c1->width == NL80211_CHAN_WIDTH_10 ||
+	    c2->width == NL80211_CHAN_WIDTH_5 ||
+	    c2->width == NL80211_CHAN_WIDTH_10)
+		return NULL;
+
+	if (c1->width == NL80211_CHAN_WIDTH_20_NOHT ||
+	    c1->width == NL80211_CHAN_WIDTH_20)
+		return c2;
+
+	if (c2->width == NL80211_CHAN_WIDTH_20_NOHT ||
+	    c2->width == NL80211_CHAN_WIDTH_20)
+		return c1;
+
+	chandef_primary_freqs(c1, &c1_pri40, &c1_pri80);
+	chandef_primary_freqs(c2, &c2_pri40, &c2_pri80);
+
+	if (c1_pri40 != c2_pri40)
+		return NULL;
+
+	WARN_ON(!c1_pri80 && !c2_pri80);
+	if (c1_pri80 && c2_pri80 && c1_pri80 != c2_pri80)
+		return NULL;
+
+	if (c1->width > c2->width)
+		return c1;
+	return c2;
+}
+EXPORT_SYMBOL(cfg80211_chandef_compatible);
+
+static void cfg80211_set_chans_dfs_state(struct wiphy *wiphy, u32 center_freq,
+					 u32 bandwidth,
+					 enum nl80211_dfs_state dfs_state)
+{
+	struct ieee80211_channel *c;
+	u32 freq;
+
+	for (freq = center_freq - bandwidth/2 + 10;
+	     freq <= center_freq + bandwidth/2 - 10;
+	     freq += 20) {
+		c = ieee80211_get_channel(wiphy, freq);
+		if (!c || !(c->flags & IEEE80211_CHAN_RADAR))
+			continue;
+
+		c->dfs_state = dfs_state;
+		c->dfs_state_entered = jiffies;
+	}
+}
+
+void cfg80211_set_dfs_state(struct wiphy *wiphy,
+			    const struct cfg80211_chan_def *chandef,
+			    enum nl80211_dfs_state dfs_state)
+{
+	int width;
+
+	if (WARN_ON(!cfg80211_chandef_valid(chandef)))
+		return;
+
+	width = cfg80211_chandef_get_width(chandef);
+	if (width < 0)
+		return;
+
+	cfg80211_set_chans_dfs_state(wiphy, chandef->center_freq1,
+				     width, dfs_state);
+
+	if (!chandef->center_freq2)
+		return;
+	cfg80211_set_chans_dfs_state(wiphy, chandef->center_freq2,
+				     width, dfs_state);
+}
+
+static u32 cfg80211_get_start_freq(u32 center_freq,
+				   u32 bandwidth)
+{
+	u32 start_freq;
+
+	if (bandwidth <= 20)
+		start_freq = center_freq;
+	else
+		start_freq = center_freq - bandwidth/2 + 10;
+
+	return start_freq;
+}
+
+static u32 cfg80211_get_end_freq(u32 center_freq,
+				 u32 bandwidth)
+{
+	u32 end_freq;
+
+	if (bandwidth <= 20)
+		end_freq = center_freq;
+	else
+		end_freq = center_freq + bandwidth/2 - 10;
+
+	return end_freq;
+}
+
+static int cfg80211_get_chans_dfs_required(struct wiphy *wiphy,
+					    u32 center_freq,
+					    u32 bandwidth)
+{
+	struct ieee80211_channel *c;
+	u32 freq, start_freq, end_freq;
+
+	start_freq = cfg80211_get_start_freq(center_freq, bandwidth);
+	end_freq = cfg80211_get_end_freq(center_freq, bandwidth);
+
+	for (freq = start_freq; freq <= end_freq; freq += 20) {
+		c = ieee80211_get_channel(wiphy, freq);
+		if (!c)
+			return -EINVAL;
+
+		if (c->flags & IEEE80211_CHAN_RADAR)
+			return 1;
+	}
+	return 0;
+}
+
+
+int cfg80211_chandef_dfs_required(struct wiphy *wiphy,
+				  const struct cfg80211_chan_def *chandef,
+				  enum nl80211_iftype iftype)
+{
+	int width;
+	int ret;
+
+	if (WARN_ON(!cfg80211_chandef_valid(chandef)))
+		return -EINVAL;
+
+	switch (iftype) {
+	case NL80211_IFTYPE_ADHOC:
+	case NL80211_IFTYPE_AP:
+	case NL80211_IFTYPE_P2P_GO:
+	case NL80211_IFTYPE_MESH_POINT:
+		width = cfg80211_chandef_get_width(chandef);
+		if (width < 0)
+			return -EINVAL;
+
+		ret = cfg80211_get_chans_dfs_required(wiphy,
+						      chandef->center_freq1,
+						      width);
+		if (ret < 0)
+			return ret;
+		else if (ret > 0)
+			return BIT(chandef->width);
+
+		if (!chandef->center_freq2)
+			return 0;
+
+		ret = cfg80211_get_chans_dfs_required(wiphy,
+						      chandef->center_freq2,
+						      width);
+		if (ret < 0)
+			return ret;
+		else if (ret > 0)
+			return BIT(chandef->width);
+
+		break;
+	case NL80211_IFTYPE_STATION:
+	case NL80211_IFTYPE_P2P_CLIENT:
+	case NL80211_IFTYPE_MONITOR:
+	case NL80211_IFTYPE_AP_VLAN:
+	case NL80211_IFTYPE_WDS:
+	case NL80211_IFTYPE_P2P_DEVICE:
+		break;
+	case NL80211_IFTYPE_UNSPECIFIED:
+	case NUM_NL80211_IFTYPES:
+		WARN_ON(1);
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(cfg80211_chandef_dfs_required);
+
+static int cfg80211_get_chans_dfs_usable(struct wiphy *wiphy,
+					 u32 center_freq,
+					 u32 bandwidth)
+{
+	struct ieee80211_channel *c;
+	u32 freq, start_freq, end_freq;
+	int count = 0;
+
+	start_freq = cfg80211_get_start_freq(center_freq, bandwidth);
+	end_freq = cfg80211_get_end_freq(center_freq, bandwidth);
+
+	/*
+	 * Check entire range of channels for the bandwidth.
+	 * Check all channels are DFS channels (DFS_USABLE or
+	 * DFS_AVAILABLE). Return number of usable channels
+	 * (require CAC). Allow DFS and non-DFS channel mix.
+	 */
+	for (freq = start_freq; freq <= end_freq; freq += 20) {
+		c = ieee80211_get_channel(wiphy, freq);
+		if (!c)
+			return -EINVAL;
+
+		if (c->flags & IEEE80211_CHAN_DISABLED)
+			return -EINVAL;
+
+		if (c->flags & IEEE80211_CHAN_RADAR) {
+			if (c->dfs_state == NL80211_DFS_UNAVAILABLE)
+				return -EINVAL;
+
+			if (c->dfs_state == NL80211_DFS_USABLE)
+				count++;
+		}
+	}
+
+	return count;
+}
+
+bool cfg80211_chandef_dfs_usable(struct wiphy *wiphy,
+				 const struct cfg80211_chan_def *chandef)
+{
+	int width;
+	int r1, r2 = 0;
+
+	if (WARN_ON(!cfg80211_chandef_valid(chandef)))
+		return false;
+
+	width = cfg80211_chandef_get_width(chandef);
+	if (width < 0)
+		return false;
+
+	r1 = cfg80211_get_chans_dfs_usable(wiphy, chandef->center_freq1,
+					  width);
+
+	if (r1 < 0)
+		return false;
+
+	switch (chandef->width) {
+	case NL80211_CHAN_WIDTH_80P80:
+		WARN_ON(!chandef->center_freq2);
+		r2 = cfg80211_get_chans_dfs_usable(wiphy,
+						   chandef->center_freq2,
+						   width);
+		if (r2 < 0)
+			return false;
+		break;
+	default:
+		WARN_ON(chandef->center_freq2);
+		break;
+	}
+
+	return (r1 + r2 > 0);
+}
+
+
+static bool cfg80211_get_chans_dfs_available(struct wiphy *wiphy,
+					     u32 center_freq,
+					     u32 bandwidth)
+{
+	struct ieee80211_channel *c;
+	u32 freq, start_freq, end_freq;
+
+	start_freq = cfg80211_get_start_freq(center_freq, bandwidth);
+	end_freq = cfg80211_get_end_freq(center_freq, bandwidth);
+
+	/*
+	 * Check entire range of channels for the bandwidth.
+	 * If any channel in between is disabled or has not
+	 * had gone through CAC return false
+	 */
+	for (freq = start_freq; freq <= end_freq; freq += 20) {
+		c = ieee80211_get_channel(wiphy, freq);
+		if (!c)
+			return false;
+
+		if (c->flags & IEEE80211_CHAN_DISABLED)
+			return false;
+
+		if ((c->flags & IEEE80211_CHAN_RADAR)  &&
+		    (c->dfs_state != NL80211_DFS_AVAILABLE))
+			return false;
+	}
+
+	return true;
+}
+
+static bool cfg80211_chandef_dfs_available(struct wiphy *wiphy,
+				const struct cfg80211_chan_def *chandef)
+{
+	int width;
+	int r;
+
+	if (WARN_ON(!cfg80211_chandef_valid(chandef)))
+		return false;
+
+	width = cfg80211_chandef_get_width(chandef);
+	if (width < 0)
+		return false;
+
+	r = cfg80211_get_chans_dfs_available(wiphy, chandef->center_freq1,
+					     width);
+
+	/* If any of channels unavailable for cf1 just return */
+	if (!r)
+		return r;
+
+	switch (chandef->width) {
+	case NL80211_CHAN_WIDTH_80P80:
+		WARN_ON(!chandef->center_freq2);
+		r = cfg80211_get_chans_dfs_available(wiphy,
+						     chandef->center_freq2,
+						     width);
+	default:
+		WARN_ON(chandef->center_freq2);
+		break;
+	}
+
+	return r;
+}
+
+static unsigned int cfg80211_get_chans_dfs_cac_time(struct wiphy *wiphy,
+						    u32 center_freq,
+						    u32 bandwidth)
+{
+	struct ieee80211_channel *c;
+	u32 start_freq, end_freq, freq;
+	unsigned int dfs_cac_ms = 0;
+
+	start_freq = cfg80211_get_start_freq(center_freq, bandwidth);
+	end_freq = cfg80211_get_end_freq(center_freq, bandwidth);
+
+	for (freq = start_freq; freq <= end_freq; freq += 20) {
+		c = ieee80211_get_channel(wiphy, freq);
+		if (!c)
+			return 0;
+
+		if (c->flags & IEEE80211_CHAN_DISABLED)
+			return 0;
+
+		if (!(c->flags & IEEE80211_CHAN_RADAR))
+			continue;
+
+		if (c->dfs_cac_ms > dfs_cac_ms)
+			dfs_cac_ms = c->dfs_cac_ms;
+	}
+
+	return dfs_cac_ms;
+}
+
+unsigned int
+cfg80211_chandef_dfs_cac_time(struct wiphy *wiphy,
+			      const struct cfg80211_chan_def *chandef)
+{
+	int width;
+	unsigned int t1 = 0, t2 = 0;
+
+	if (WARN_ON(!cfg80211_chandef_valid(chandef)))
+		return 0;
+
+	width = cfg80211_chandef_get_width(chandef);
+	if (width < 0)
+		return 0;
+
+	t1 = cfg80211_get_chans_dfs_cac_time(wiphy,
+					     chandef->center_freq1,
+					     width);
+
+	if (!chandef->center_freq2)
+		return t1;
+
+	t2 = cfg80211_get_chans_dfs_cac_time(wiphy,
+					     chandef->center_freq2,
+					     width);
+
+	return max(t1, t2);
+}
+
+static bool cfg80211_secondary_chans_ok(struct wiphy *wiphy,
+					u32 center_freq, u32 bandwidth,
+					u32 prohibited_flags)
+{
+	struct ieee80211_channel *c;
+	u32 freq, start_freq, end_freq;
+
+	start_freq = cfg80211_get_start_freq(center_freq, bandwidth);
+	end_freq = cfg80211_get_end_freq(center_freq, bandwidth);
+
+	for (freq = start_freq; freq <= end_freq; freq += 20) {
+		c = ieee80211_get_channel(wiphy, freq);
+		if (!c || c->flags & prohibited_flags)
+			return false;
+	}
+
+	return true;
+}
+
+bool cfg80211_chandef_usable(struct wiphy *wiphy,
+			     const struct cfg80211_chan_def *chandef,
+			     u32 prohibited_flags)
+{
+	struct ieee80211_sta_ht_cap *ht_cap;
+	struct ieee80211_sta_vht_cap *vht_cap;
+	u32 width, control_freq, cap;
+
+	if (WARN_ON(!cfg80211_chandef_valid(chandef)))
+		return false;
+
+	ht_cap = &wiphy->bands[chandef->chan->band]->ht_cap;
+	vht_cap = &wiphy->bands[chandef->chan->band]->vht_cap;
+
+	control_freq = chandef->chan->center_freq;
+
+	switch (chandef->width) {
+	case NL80211_CHAN_WIDTH_5:
+		width = 5;
+		break;
+	case NL80211_CHAN_WIDTH_10:
+		prohibited_flags |= IEEE80211_CHAN_NO_10MHZ;
+		width = 10;
+		break;
+	case NL80211_CHAN_WIDTH_20:
+		if (!ht_cap->ht_supported)
+			return false;
+	case NL80211_CHAN_WIDTH_20_NOHT:
+		prohibited_flags |= IEEE80211_CHAN_NO_20MHZ;
+		width = 20;
+		break;
+	case NL80211_CHAN_WIDTH_40:
+		width = 40;
+		if (!ht_cap->ht_supported)
+			return false;
+		if (!(ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) ||
+		    ht_cap->cap & IEEE80211_HT_CAP_40MHZ_INTOLERANT)
+			return false;
+		if (chandef->center_freq1 < control_freq &&
+		    chandef->chan->flags & IEEE80211_CHAN_NO_HT40MINUS)
+			return false;
+		if (chandef->center_freq1 > control_freq &&
+		    chandef->chan->flags & IEEE80211_CHAN_NO_HT40PLUS)
+			return false;
+		break;
+	case NL80211_CHAN_WIDTH_80P80:
+		cap = vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
+		if (cap != IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
+			return false;
+	case NL80211_CHAN_WIDTH_80:
+		if (!vht_cap->vht_supported)
+			return false;
+		prohibited_flags |= IEEE80211_CHAN_NO_80MHZ;
+		width = 80;
+		break;
+	case NL80211_CHAN_WIDTH_160:
+		if (!vht_cap->vht_supported)
+			return false;
+		cap = vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
+		if (cap != IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ &&
+		    cap != IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
+			return false;
+		prohibited_flags |= IEEE80211_CHAN_NO_160MHZ;
+		width = 160;
+		break;
+	default:
+		WARN_ON_ONCE(1);
+		return false;
+	}
+
+	/*
+	 * TODO: What if there are only certain 80/160/80+80 MHz channels
+	 *	 allowed by the driver, or only certain combinations?
+	 *	 For 40 MHz the driver can set the NO_HT40 flags, but for
+	 *	 80/160 MHz and in particular 80+80 MHz this isn't really
+	 *	 feasible and we only have NO_80MHZ/NO_160MHZ so far but
+	 *	 no way to cover 80+80 MHz or more complex restrictions.
+	 *	 Note that such restrictions also need to be advertised to
+	 *	 userspace, for example for P2P channel selection.
+	 */
+
+	if (width > 20)
+		prohibited_flags |= IEEE80211_CHAN_NO_OFDM;
+
+	/* 5 and 10 MHz are only defined for the OFDM PHY */
+	if (width < 20)
+		prohibited_flags |= IEEE80211_CHAN_NO_OFDM;
+
+
+	if (!cfg80211_secondary_chans_ok(wiphy, chandef->center_freq1,
+					 width, prohibited_flags))
+		return false;
+
+	if (!chandef->center_freq2)
+		return true;
+	return cfg80211_secondary_chans_ok(wiphy, chandef->center_freq2,
+					   width, prohibited_flags);
+}
+EXPORT_SYMBOL(cfg80211_chandef_usable);
+
+/*
+ * For GO only, check if the channel can be used under permissive conditions
+ * mandated by the some regulatory bodies, i.e., the channel is marked with
+ * IEEE80211_CHAN_GO_CONCURRENT and there is an additional station interface
+ * associated to an AP on the same channel or on the same UNII band
+ * (assuming that the AP is an authorized master).
+ * In addition allow the GO to operate on a channel on which indoor operation is
+ * allowed, iff we are currently operating in an indoor environment.
+ */
+static bool cfg80211_go_permissive_chan(struct cfg80211_registered_device *rdev,
+					struct ieee80211_channel *chan)
+{
+	struct wireless_dev *wdev_iter;
+	struct wiphy *wiphy = wiphy_idx_to_wiphy(rdev->wiphy_idx);
+
+	ASSERT_RTNL();
+
+	if (!config_enabled(CONFIG_CFG80211_REG_RELAX_NO_IR) ||
+	    !(wiphy->regulatory_flags & REGULATORY_ENABLE_RELAX_NO_IR))
+		return false;
+
+	if (regulatory_indoor_allowed() &&
+	    (chan->flags & IEEE80211_CHAN_INDOOR_ONLY))
+		return true;
+
+	if (!(chan->flags & IEEE80211_CHAN_GO_CONCURRENT))
+		return false;
+
+	/*
+	 * Generally, it is possible to rely on another device/driver to allow
+	 * the GO concurrent relaxation, however, since the device can further
+	 * enforce the relaxation (by doing a similar verifications as this),
+	 * and thus fail the GO instantiation, consider only the interfaces of
+	 * the current registered device.
+	 */
+	list_for_each_entry(wdev_iter, &rdev->wdev_list, list) {
+		struct ieee80211_channel *other_chan = NULL;
+		int r1, r2;
+
+		if (wdev_iter->iftype != NL80211_IFTYPE_STATION ||
+		    !netif_running(wdev_iter->netdev))
+			continue;
+
+		wdev_lock(wdev_iter);
+		if (wdev_iter->current_bss)
+			other_chan = wdev_iter->current_bss->pub.channel;
+		wdev_unlock(wdev_iter);
+
+		if (!other_chan)
+			continue;
+
+		if (chan == other_chan)
+			return true;
+
+		if (chan->band != IEEE80211_BAND_5GHZ)
+			continue;
+
+		r1 = cfg80211_get_unii(chan->center_freq);
+		r2 = cfg80211_get_unii(other_chan->center_freq);
+
+		if (r1 != -EINVAL && r1 == r2) {
+			/*
+			 * At some locations channels 149-165 are considered a
+			 * bundle, but at other locations, e.g., Indonesia,
+			 * channels 149-161 are considered a bundle while
+			 * channel 165 is left out and considered to be in a
+			 * different bundle. Thus, in case that there is a
+			 * station interface connected to an AP on channel 165,
+			 * it is assumed that channels 149-161 are allowed for
+			 * GO operations. However, having a station interface
+			 * connected to an AP on channels 149-161, does not
+			 * allow GO operation on channel 165.
+			 */
+			if (chan->center_freq == 5825 &&
+			    other_chan->center_freq != 5825)
+				continue;
+			return true;
+		}
+	}
+
+	return false;
+}
+
+bool cfg80211_reg_can_beacon(struct wiphy *wiphy,
+			     struct cfg80211_chan_def *chandef,
+			     enum nl80211_iftype iftype)
+{
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
+	bool res;
+	u32 prohibited_flags = IEEE80211_CHAN_DISABLED |
+			       IEEE80211_CHAN_RADAR;
+
+	trace_cfg80211_reg_can_beacon(wiphy, chandef, iftype);
+
+	/*
+	 * Under certain conditions suggested by the some regulatory bodies
+	 * a GO can operate on channels marked with IEEE80211_NO_IR
+	 * so set this flag only if such relaxations are not enabled and
+	 * the conditions are not met.
+	 */
+	if (iftype != NL80211_IFTYPE_P2P_GO ||
+	    !cfg80211_go_permissive_chan(rdev, chandef->chan))
+		prohibited_flags |= IEEE80211_CHAN_NO_IR;
+
+	if (cfg80211_chandef_dfs_required(wiphy, chandef, iftype) > 0 &&
+	    cfg80211_chandef_dfs_available(wiphy, chandef)) {
+		/* We can skip IEEE80211_CHAN_NO_IR if chandef dfs available */
+		prohibited_flags = IEEE80211_CHAN_DISABLED;
+	}
+
+	res = cfg80211_chandef_usable(wiphy, chandef, prohibited_flags);
+
+	trace_cfg80211_return_bool(res);
+	return res;
+}
+EXPORT_SYMBOL(cfg80211_reg_can_beacon);
+
+int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
+				 struct cfg80211_chan_def *chandef)
+{
+	if (!rdev->ops->set_monitor_channel)
+		return -EOPNOTSUPP;
+	if (!cfg80211_has_monitors_only(rdev))
+		return -EBUSY;
+
+	return rdev_set_monitor_channel(rdev, chandef);
+}
+
+void
+cfg80211_get_chan_state(struct wireless_dev *wdev,
+		        struct ieee80211_channel **chan,
+		        enum cfg80211_chan_mode *chanmode,
+		        u8 *radar_detect)
+{
+	int ret;
+
+	*chan = NULL;
+	*chanmode = CHAN_MODE_UNDEFINED;
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (wdev->netdev && !netif_running(wdev->netdev))
+		return;
+
+	switch (wdev->iftype) {
+	case NL80211_IFTYPE_ADHOC:
+		if (wdev->current_bss) {
+			*chan = wdev->current_bss->pub.channel;
+			*chanmode = (wdev->ibss_fixed &&
+				     !wdev->ibss_dfs_possible)
+				  ? CHAN_MODE_SHARED
+				  : CHAN_MODE_EXCLUSIVE;
+
+			/* consider worst-case - IBSS can try to return to the
+			 * original user-specified channel as creator */
+			if (wdev->ibss_dfs_possible)
+				*radar_detect |= BIT(wdev->chandef.width);
+			return;
+		}
+		break;
+	case NL80211_IFTYPE_STATION:
+	case NL80211_IFTYPE_P2P_CLIENT:
+		if (wdev->current_bss) {
+			*chan = wdev->current_bss->pub.channel;
+			*chanmode = CHAN_MODE_SHARED;
+			return;
+		}
+		break;
+	case NL80211_IFTYPE_AP:
+	case NL80211_IFTYPE_P2P_GO:
+		if (wdev->cac_started) {
+			*chan = wdev->chandef.chan;
+			*chanmode = CHAN_MODE_SHARED;
+			*radar_detect |= BIT(wdev->chandef.width);
+		} else if (wdev->beacon_interval) {
+			*chan = wdev->chandef.chan;
+			*chanmode = CHAN_MODE_SHARED;
+
+			ret = cfg80211_chandef_dfs_required(wdev->wiphy,
+							    &wdev->chandef,
+							    wdev->iftype);
+			WARN_ON(ret < 0);
+			if (ret > 0)
+				*radar_detect |= BIT(wdev->chandef.width);
+		}
+		return;
+	case NL80211_IFTYPE_MESH_POINT:
+		if (wdev->mesh_id_len) {
+			*chan = wdev->chandef.chan;
+			*chanmode = CHAN_MODE_SHARED;
+
+			ret = cfg80211_chandef_dfs_required(wdev->wiphy,
+							    &wdev->chandef,
+							    wdev->iftype);
+			WARN_ON(ret < 0);
+			if (ret > 0)
+				*radar_detect |= BIT(wdev->chandef.width);
+		}
+		return;
+	case NL80211_IFTYPE_MONITOR:
+	case NL80211_IFTYPE_AP_VLAN:
+	case NL80211_IFTYPE_WDS:
+	case NL80211_IFTYPE_P2P_DEVICE:
+		/* these interface types don't really have a channel */
+		return;
+	case NL80211_IFTYPE_UNSPECIFIED:
+	case NUM_NL80211_IFTYPES:
+		WARN_ON(1);
+	}
+}

net/wireless/core.h

@@ -0,0 +1,470 @@
+/*
+ * Wireless configuration interface internals.
+ *
+ * Copyright 2006-2010	Johannes Berg <johannes@sipsolutions.net>
+ */
+#ifndef __NET_WIRELESS_CORE_H
+#define __NET_WIRELESS_CORE_H
+#include <linux/list.h>
+#include <linux/netdevice.h>
+#include <linux/rbtree.h>
+#include <linux/debugfs.h>
+#include <linux/rfkill.h>
+#include <linux/workqueue.h>
+#include <linux/rtnetlink.h>
+#include <net/genetlink.h>
+#include <net/cfg80211.h>
+#include "reg.h"
+
+
+#define WIPHY_IDX_INVALID	-1
+
+struct cfg80211_registered_device {
+	const struct cfg80211_ops *ops;
+	struct list_head list;
+
+	/* rfkill support */
+	struct rfkill_ops rfkill_ops;
+	struct rfkill *rfkill;
+	struct work_struct rfkill_sync;
+
+	/* ISO / IEC 3166 alpha2 for which this device is receiving
+	 * country IEs on, this can help disregard country IEs from APs
+	 * on the same alpha2 quickly. The alpha2 may differ from
+	 * cfg80211_regdomain's alpha2 when an intersection has occurred.
+	 * If the AP is reconfigured this can also be used to tell us if
+	 * the country on the country IE changed. */
+	char country_ie_alpha2[2];
+
+	/* If a Country IE has been received this tells us the environment
+	 * which its telling us its in. This defaults to ENVIRON_ANY */
+	enum environment_cap env;
+
+	/* wiphy index, internal only */
+	int wiphy_idx;
+
+	/* associated wireless interfaces, protected by rtnl or RCU */
+	struct list_head wdev_list;
+	int devlist_generation, wdev_id;
+	int opencount; /* also protected by devlist_mtx */
+	wait_queue_head_t dev_wait;
+
+	struct list_head beacon_registrations;
+	spinlock_t beacon_registrations_lock;
+
+	/* protected by RTNL only */
+	int num_running_ifaces;
+	int num_running_monitor_ifaces;
+
+	/* 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 */
+	struct sk_buff *scan_msg;
+	struct cfg80211_sched_scan_request *sched_scan_req;
+	unsigned long suspend_at;
+	struct work_struct scan_done_wk;
+	struct work_struct sched_scan_results_wk;
+
+	struct genl_info *cur_cmd_info;
+
+	struct work_struct conn_work;
+	struct work_struct event_work;
+
+	struct delayed_work dfs_update_channels_wk;
+
+	/* netlink port which started critical protocol (0 means not started) */
+	u32 crit_proto_nlportid;
+
+	struct cfg80211_coalesce *coalesce;
+
+	spinlock_t destroy_list_lock;
+	struct list_head destroy_list;
+	struct work_struct destroy_work;
+
+	/* must be last because of the way we do wiphy_priv(),
+	 * and it should at least be aligned to NETDEV_ALIGN */
+	struct wiphy wiphy __aligned(NETDEV_ALIGN);
+};
+
+static inline
+struct cfg80211_registered_device *wiphy_to_rdev(struct wiphy *wiphy)
+{
+	BUG_ON(!wiphy);
+	return container_of(wiphy, struct cfg80211_registered_device, wiphy);
+}
+
+static inline void
+cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
+{
+#ifdef CONFIG_PM
+	int i;
+
+	if (!rdev->wiphy.wowlan_config)
+		return;
+	for (i = 0; i < rdev->wiphy.wowlan_config->n_patterns; i++)
+		kfree(rdev->wiphy.wowlan_config->patterns[i].mask);
+	kfree(rdev->wiphy.wowlan_config->patterns);
+	if (rdev->wiphy.wowlan_config->tcp &&
+	    rdev->wiphy.wowlan_config->tcp->sock)
+		sock_release(rdev->wiphy.wowlan_config->tcp->sock);
+	kfree(rdev->wiphy.wowlan_config->tcp);
+	kfree(rdev->wiphy.wowlan_config);
+#endif
+}
+
+extern struct workqueue_struct *cfg80211_wq;
+extern struct list_head cfg80211_rdev_list;
+extern int cfg80211_rdev_list_generation;
+
+struct cfg80211_internal_bss {
+	struct list_head list;
+	struct list_head hidden_list;
+	struct rb_node rbn;
+	unsigned long ts;
+	unsigned long refcount;
+	atomic_t hold;
+
+	/* must be last because of priv member */
+	struct cfg80211_bss pub;
+};
+
+static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub)
+{
+	return container_of(pub, struct cfg80211_internal_bss, pub);
+}
+
+static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
+{
+	atomic_inc(&bss->hold);
+}
+
+static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
+{
+	int r = atomic_dec_return(&bss->hold);
+	WARN_ON(r < 0);
+}
+
+
+struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
+int get_wiphy_idx(struct wiphy *wiphy);
+
+struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
+
+int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
+			  struct net *net);
+
+static inline void wdev_lock(struct wireless_dev *wdev)
+	__acquires(wdev)
+{
+	mutex_lock(&wdev->mtx);
+	__acquire(wdev->mtx);
+}
+
+static inline void wdev_unlock(struct wireless_dev *wdev)
+	__releases(wdev)
+{
+	__release(wdev->mtx);
+	mutex_unlock(&wdev->mtx);
+}
+
+#define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
+
+static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
+{
+	ASSERT_RTNL();
+
+	return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
+	       rdev->num_running_ifaces > 0;
+}
+
+enum cfg80211_event_type {
+	EVENT_CONNECT_RESULT,
+	EVENT_ROAMED,
+	EVENT_DISCONNECTED,
+	EVENT_IBSS_JOINED,
+	EVENT_STOPPED,
+};
+
+struct cfg80211_event {
+	struct list_head list;
+	enum cfg80211_event_type type;
+
+	union {
+		struct {
+			u8 bssid[ETH_ALEN];
+			const u8 *req_ie;
+			const u8 *resp_ie;
+			size_t req_ie_len;
+			size_t resp_ie_len;
+			u16 status;
+		} cr;
+		struct {
+			const u8 *req_ie;
+			const u8 *resp_ie;
+			size_t req_ie_len;
+			size_t resp_ie_len;
+			struct cfg80211_bss *bss;
+		} rm;
+		struct {
+			const u8 *ie;
+			size_t ie_len;
+			u16 reason;
+		} dc;
+		struct {
+			u8 bssid[ETH_ALEN];
+			struct ieee80211_channel *channel;
+		} ij;
+	};
+};
+
+struct cfg80211_cached_keys {
+	struct key_params params[6];
+	u8 data[6][WLAN_MAX_KEY_LEN];
+	int def, defmgmt;
+};
+
+enum cfg80211_chan_mode {
+	CHAN_MODE_UNDEFINED,
+	CHAN_MODE_SHARED,
+	CHAN_MODE_EXCLUSIVE,
+};
+
+struct cfg80211_beacon_registration {
+	struct list_head list;
+	u32 nlportid;
+};
+
+struct cfg80211_iface_destroy {
+	struct list_head list;
+	u32 nlportid;
+};
+
+void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev);
+
+/* free object */
+void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
+
+int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
+			char *newname);
+
+void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
+
+void cfg80211_bss_expire(struct cfg80211_registered_device *rdev);
+void cfg80211_bss_age(struct cfg80211_registered_device *rdev,
+                      unsigned long age_secs);
+
+/* IBSS */
+int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
+		       struct net_device *dev,
+		       struct cfg80211_ibss_params *params,
+		       struct cfg80211_cached_keys *connkeys);
+void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
+int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
+			  struct net_device *dev, bool nowext);
+int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
+			struct net_device *dev, bool nowext);
+void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid,
+			    struct ieee80211_channel *channel);
+int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
+			    struct wireless_dev *wdev);
+
+/* mesh */
+extern const struct mesh_config default_mesh_config;
+extern const struct mesh_setup default_mesh_setup;
+int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
+			 struct net_device *dev,
+			 struct mesh_setup *setup,
+			 const struct mesh_config *conf);
+int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
+		       struct net_device *dev,
+		       struct mesh_setup *setup,
+		       const struct mesh_config *conf);
+int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
+			  struct net_device *dev);
+int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
+			struct net_device *dev);
+int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
+			      struct wireless_dev *wdev,
+			      struct cfg80211_chan_def *chandef);
+
+/* AP */
+int __cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
+		       struct net_device *dev, bool notify);
+int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
+		     struct net_device *dev, bool notify);
+
+/* MLME */
+int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
+		       struct net_device *dev,
+		       struct ieee80211_channel *chan,
+		       enum nl80211_auth_type auth_type,
+		       const u8 *bssid,
+		       const u8 *ssid, int ssid_len,
+		       const u8 *ie, int ie_len,
+		       const u8 *key, int key_len, int key_idx,
+		       const u8 *sae_data, int sae_data_len);
+int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
+			struct net_device *dev,
+			struct ieee80211_channel *chan,
+			const u8 *bssid,
+			const u8 *ssid, int ssid_len,
+			struct cfg80211_assoc_request *req);
+int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
+			 struct net_device *dev, const u8 *bssid,
+			 const u8 *ie, int ie_len, u16 reason,
+			 bool local_state_change);
+int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
+			   struct net_device *dev, const u8 *bssid,
+			   const u8 *ie, int ie_len, u16 reason,
+			   bool local_state_change);
+void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
+			struct net_device *dev);
+int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
+				u16 frame_type, const u8 *match_data,
+				int match_len);
+void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
+void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
+int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
+			  struct wireless_dev *wdev,
+			  struct cfg80211_mgmt_tx_params *params,
+			  u64 *cookie);
+void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
+			       const struct ieee80211_ht_cap *ht_capa_mask);
+void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
+				const struct ieee80211_vht_cap *vht_capa_mask);
+
+/* SME events */
+int cfg80211_connect(struct cfg80211_registered_device *rdev,
+		     struct net_device *dev,
+		     struct cfg80211_connect_params *connect,
+		     struct cfg80211_cached_keys *connkeys,
+		     const u8 *prev_bssid);
+void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
+			       const u8 *req_ie, size_t req_ie_len,
+			       const u8 *resp_ie, size_t resp_ie_len,
+			       u16 status, bool wextev,
+			       struct cfg80211_bss *bss);
+void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
+			     size_t ie_len, u16 reason, bool from_ap);
+int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
+			struct net_device *dev, u16 reason,
+			bool wextev);
+void __cfg80211_roamed(struct wireless_dev *wdev,
+		       struct cfg80211_bss *bss,
+		       const u8 *req_ie, size_t req_ie_len,
+		       const u8 *resp_ie, size_t resp_ie_len);
+int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
+			      struct wireless_dev *wdev);
+
+/* SME implementation */
+void cfg80211_conn_work(struct work_struct *work);
+void cfg80211_sme_scan_done(struct net_device *dev);
+bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status);
+void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len);
+void cfg80211_sme_disassoc(struct wireless_dev *wdev);
+void cfg80211_sme_deauth(struct wireless_dev *wdev);
+void cfg80211_sme_auth_timeout(struct wireless_dev *wdev);
+void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev);
+
+/* internal helpers */
+bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
+int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
+				   struct key_params *params, int key_idx,
+				   bool pairwise, const u8 *mac_addr);
+void __cfg80211_scan_done(struct work_struct *wk);
+void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev,
+			   bool send_message);
+void __cfg80211_sched_scan_results(struct work_struct *wk);
+int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
+			       bool driver_initiated);
+void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
+int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
+			  struct net_device *dev, enum nl80211_iftype ntype,
+			  u32 *flags, struct vif_params *params);
+void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
+void cfg80211_process_wdev_events(struct wireless_dev *wdev);
+
+int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
+				 struct wireless_dev *wdev,
+				 enum nl80211_iftype iftype,
+				 struct ieee80211_channel *chan,
+				 enum cfg80211_chan_mode chanmode,
+				 u8 radar_detect);
+
+/**
+ * cfg80211_chandef_dfs_usable - checks if chandef is DFS usable
+ * @wiphy: the wiphy to validate against
+ * @chandef: the channel definition to check
+ *
+ * Checks if chandef is usable and we can/need start CAC on such channel.
+ *
+ * Return: Return true if all channels available and at least
+ *	   one channel require CAC (NL80211_DFS_USABLE)
+ */
+bool cfg80211_chandef_dfs_usable(struct wiphy *wiphy,
+				 const struct cfg80211_chan_def *chandef);
+
+void cfg80211_set_dfs_state(struct wiphy *wiphy,
+			    const struct cfg80211_chan_def *chandef,
+			    enum nl80211_dfs_state dfs_state);
+
+void cfg80211_dfs_channels_update_work(struct work_struct *work);
+
+unsigned int
+cfg80211_chandef_dfs_cac_time(struct wiphy *wiphy,
+			      const struct cfg80211_chan_def *chandef);
+
+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 + (ULONG_MAX - start) + 1);
+}
+
+void
+cfg80211_get_chan_state(struct wireless_dev *wdev,
+		        struct ieee80211_channel **chan,
+		        enum cfg80211_chan_mode *chanmode,
+		        u8 *radar_detect);
+
+int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
+				 struct cfg80211_chan_def *chandef);
+
+int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
+			   const u8 *rates, unsigned int n_rates,
+			   u32 *mask);
+
+int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
+				 u32 beacon_int);
+
+void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
+			       enum nl80211_iftype iftype, int num);
+
+void __cfg80211_leave(struct cfg80211_registered_device *rdev,
+		      struct wireless_dev *wdev);
+void cfg80211_leave(struct cfg80211_registered_device *rdev,
+		    struct wireless_dev *wdev);
+
+void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
+			      struct wireless_dev *wdev);
+
+#define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
+
+#ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
+#define CFG80211_DEV_WARN_ON(cond)	WARN_ON(cond)
+#else
+/*
+ * Trick to enable using it as a condition,
+ * and also not give a warning when it's
+ * not used that way.
+ */
+#define CFG80211_DEV_WARN_ON(cond)	({bool __r = (cond); __r; })
+#endif
+
+#endif /* __NET_WIRELESS_CORE_H */

net/wireless/db.txt

@@ -0,0 +1,17 @@
+#
+# This file is a placeholder to prevent accidental build breakage if someone
+# enables CONFIG_CFG80211_INTERNAL_REGDB.  Almost no one actually needs to
+# enable that build option.
+#
+# You should be using CRDA instead.  It is even better if you use the CRDA
+# package provided by your distribution, since they will probably keep it
+# up-to-date on your behalf.
+#
+# If you _really_ intend to use CONFIG_CFG80211_INTERNAL_REGDB then you will
+# need to replace this file with one containing appropriately formatted
+# regulatory rules that cover the regulatory domains you will be using.  Your
+# best option is to extract the db.txt file from the wireless-regdb git
+# repository:
+#
+#   git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-regdb.git
+#

net/wireless/debugfs.c

@@ -0,0 +1,117 @@
+/*
+ * cfg80211 debugfs
+ *
+ * Copyright 2009	Luis R. Rodriguez <lrodriguez@atheros.com>
+ * Copyright 2007	Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/slab.h>
+#include "core.h"
+#include "debugfs.h"
+
+#define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...)		\
+static ssize_t name## _read(struct file *file, char __user *userbuf,	\
+			    size_t count, loff_t *ppos)			\
+{									\
+	struct wiphy *wiphy= file->private_data;		\
+	char buf[buflen];						\
+	int res;							\
+									\
+	res = scnprintf(buf, buflen, fmt "\n", ##value);		\
+	return simple_read_from_buffer(userbuf, count, ppos, buf, res);	\
+}									\
+									\
+static const struct file_operations name## _ops = {			\
+	.read = name## _read,						\
+	.open = simple_open,						\
+	.llseek = generic_file_llseek,					\
+};
+
+DEBUGFS_READONLY_FILE(rts_threshold, 20, "%d",
+		      wiphy->rts_threshold)
+DEBUGFS_READONLY_FILE(fragmentation_threshold, 20, "%d",
+		      wiphy->frag_threshold);
+DEBUGFS_READONLY_FILE(short_retry_limit, 20, "%d",
+		      wiphy->retry_short)
+DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d",
+		      wiphy->retry_long);
+
+static int ht_print_chan(struct ieee80211_channel *chan,
+			 char *buf, int buf_size, int offset)
+{
+	if (WARN_ON(offset > buf_size))
+		return 0;
+
+	if (chan->flags & IEEE80211_CHAN_DISABLED)
+		return scnprintf(buf + offset,
+				 buf_size - offset,
+				 "%d Disabled\n",
+				 chan->center_freq);
+
+	return scnprintf(buf + offset,
+			 buf_size - offset,
+			 "%d HT40 %c%c\n",
+			 chan->center_freq,
+			 (chan->flags & IEEE80211_CHAN_NO_HT40MINUS) ?
+				' ' : '-',
+			 (chan->flags & IEEE80211_CHAN_NO_HT40PLUS) ?
+				' ' : '+');
+}
+
+static ssize_t ht40allow_map_read(struct file *file,
+				  char __user *user_buf,
+				  size_t count, loff_t *ppos)
+{
+	struct wiphy *wiphy = file->private_data;
+	char *buf;
+	unsigned int offset = 0, buf_size = PAGE_SIZE, i, r;
+	enum ieee80211_band band;
+	struct ieee80211_supported_band *sband;
+
+	buf = kzalloc(buf_size, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	rtnl_lock();
+
+	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+		sband = wiphy->bands[band];
+		if (!sband)
+			continue;
+		for (i = 0; i < sband->n_channels; i++)
+			offset += ht_print_chan(&sband->channels[i],
+						buf, buf_size, offset);
+	}
+
+	rtnl_unlock();
+
+	r = simple_read_from_buffer(user_buf, count, ppos, buf, offset);
+
+	kfree(buf);
+
+	return r;
+}
+
+static const struct file_operations ht40allow_map_ops = {
+	.read = ht40allow_map_read,
+	.open = simple_open,
+	.llseek = default_llseek,
+};
+
+#define DEBUGFS_ADD(name)						\
+	debugfs_create_file(#name, S_IRUGO, phyd, &rdev->wiphy, &name## _ops);
+
+void cfg80211_debugfs_rdev_add(struct cfg80211_registered_device *rdev)
+{
+	struct dentry *phyd = rdev->wiphy.debugfsdir;
+
+	DEBUGFS_ADD(rts_threshold);
+	DEBUGFS_ADD(fragmentation_threshold);
+	DEBUGFS_ADD(short_retry_limit);
+	DEBUGFS_ADD(long_retry_limit);
+	DEBUGFS_ADD(ht40allow_map);
+}

net/wireless/debugfs.h

@@ -0,0 +1,11 @@
+#ifndef __CFG80211_DEBUGFS_H
+#define __CFG80211_DEBUGFS_H
+
+#ifdef CONFIG_CFG80211_DEBUGFS
+void cfg80211_debugfs_rdev_add(struct cfg80211_registered_device *rdev);
+#else
+static inline
+void cfg80211_debugfs_rdev_add(struct cfg80211_registered_device *rdev) {}
+#endif
+
+#endif /* __CFG80211_DEBUGFS_H */

net/wireless/ethtool.c

@@ -0,0 +1,24 @@
+#include <linux/utsname.h>
+#include <net/cfg80211.h>
+#include "core.h"
+#include "rdev-ops.h"
+
+void cfg80211_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+
+	strlcpy(info->driver, wiphy_dev(wdev->wiphy)->driver->name,
+		sizeof(info->driver));
+
+	strlcpy(info->version, init_utsname()->release, sizeof(info->version));
+
+	if (wdev->wiphy->fw_version[0])
+		strlcpy(info->fw_version, wdev->wiphy->fw_version,
+			sizeof(info->fw_version));
+	else
+		strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
+
+	strlcpy(info->bus_info, dev_name(wiphy_dev(wdev->wiphy)),
+		sizeof(info->bus_info));
+}
+EXPORT_SYMBOL(cfg80211_get_drvinfo);

net/wireless/genregdb.awk

@@ -0,0 +1,158 @@
+#!/usr/bin/awk -f
+#
+# genregdb.awk -- generate regdb.c from db.txt
+#
+# Actually, it reads from stdin (presumed to be db.txt) and writes
+# to stdout (presumed to be regdb.c), but close enough...
+#
+# Copyright 2009 John W. Linville <linville@tuxdriver.com>
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+BEGIN {
+	active = 0
+	rules = 0;
+	print "/*"
+	print " * DO NOT EDIT -- file generated from data in db.txt"
+	print " */"
+	print ""
+	print "#include <linux/nl80211.h>"
+	print "#include <net/cfg80211.h>"
+	print "#include \"regdb.h\""
+	print ""
+	regdb = "const struct ieee80211_regdomain *reg_regdb[] = {\n"
+}
+
+function parse_country_head() {
+	country=$2
+	sub(/:/, "", country)
+	printf "static const struct ieee80211_regdomain regdom_%s = {\n", country
+	printf "\t.alpha2 = \"%s\",\n", country
+	if ($NF ~ /DFS-ETSI/)
+		printf "\t.dfs_region = NL80211_DFS_ETSI,\n"
+	else if ($NF ~ /DFS-FCC/)
+		printf "\t.dfs_region = NL80211_DFS_FCC,\n"
+	else if ($NF ~ /DFS-JP/)
+		printf "\t.dfs_region = NL80211_DFS_JP,\n"
+	printf "\t.reg_rules = {\n"
+	active = 1
+	regdb = regdb "\t&regdom_" country ",\n"
+}
+
+function parse_reg_rule()
+{
+	flag_starts_at = 7
+
+	start = $1
+	sub(/\(/, "", start)
+	end = $3
+	bw = $5
+	sub(/\),/, "", bw)
+	gain = 0
+	power = $6
+	# power might be in mW...
+	units = $7
+	dfs_cac = 0
+
+	sub(/\(/, "", power)
+	sub(/\),/, "", power)
+	sub(/\),/, "", units)
+	sub(/\)/, "", units)
+
+	if (units == "mW") {
+		flag_starts_at = 8
+		power = 10 * log(power)/log(10)
+		if ($8 ~ /[[:digit:]]/) {
+			flag_starts_at = 9
+			dfs_cac = $8
+		}
+	} else {
+		if ($7 ~ /[[:digit:]]/) {
+			flag_starts_at = 8
+			dfs_cac = $7
+		}
+	}
+	sub(/\(/, "", dfs_cac)
+	sub(/\),/, "", dfs_cac)
+	flagstr = ""
+	for (i=flag_starts_at; i<=NF; i++)
+		flagstr = flagstr $i
+	split(flagstr, flagarray, ",")
+	flags = ""
+	for (arg in flagarray) {
+		if (flagarray[arg] == "NO-OFDM") {
+			flags = flags "\n\t\t\tNL80211_RRF_NO_OFDM | "
+		} else if (flagarray[arg] == "NO-CCK") {
+			flags = flags "\n\t\t\tNL80211_RRF_NO_CCK | "
+		} else if (flagarray[arg] == "NO-INDOOR") {
+			flags = flags "\n\t\t\tNL80211_RRF_NO_INDOOR | "
+		} else if (flagarray[arg] == "NO-OUTDOOR") {
+			flags = flags "\n\t\t\tNL80211_RRF_NO_OUTDOOR | "
+		} else if (flagarray[arg] == "DFS") {
+			flags = flags "\n\t\t\tNL80211_RRF_DFS | "
+		} else if (flagarray[arg] == "PTP-ONLY") {
+			flags = flags "\n\t\t\tNL80211_RRF_PTP_ONLY | "
+		} else if (flagarray[arg] == "PTMP-ONLY") {
+			flags = flags "\n\t\t\tNL80211_RRF_PTMP_ONLY | "
+		} else if (flagarray[arg] == "PASSIVE-SCAN") {
+			flags = flags "\n\t\t\tNL80211_RRF_NO_IR | "
+		} else if (flagarray[arg] == "NO-IBSS") {
+			flags = flags "\n\t\t\tNL80211_RRF_NO_IR | "
+		} else if (flagarray[arg] == "NO-IR") {
+			flags = flags "\n\t\t\tNL80211_RRF_NO_IR | "
+		} else if (flagarray[arg] == "AUTO-BW") {
+			flags = flags "\n\t\t\tNL80211_RRF_AUTO_BW | "
+		}
+
+	}
+	flags = flags "0"
+	printf "\t\tREG_RULE_EXT(%d, %d, %d, %d, %.0f, %d, %s),\n", start, end, bw, gain, power, dfs_cac, flags
+	rules++
+}
+
+function print_tail_country()
+{
+	active = 0
+	printf "\t},\n"
+	printf "\t.n_reg_rules = %d\n", rules
+	printf "};\n\n"
+	rules = 0;
+}
+
+/^[ \t]*#/ {
+	# Ignore
+}
+
+!active && /^[ \t]*$/ {
+	# Ignore
+}
+
+!active && /country/ {
+	parse_country_head()
+}
+
+active && /^[ \t]*\(/ {
+	parse_reg_rule()
+}
+
+active && /^[ \t]*$/ {
+	print_tail_country()
+}
+
+END {
+	if (active)
+		print_tail_country()
+	print regdb "};"
+	print ""
+	print "int reg_regdb_size = ARRAY_SIZE(reg_regdb);"
+}

net/wireless/ibss.c

@@ -0,0 +1,542 @@
+/*
+ * Some IBSS support code for cfg80211.
+ *
+ * Copyright 2009	Johannes Berg <johannes@sipsolutions.net>
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/if_arp.h>
+#include <linux/slab.h>
+#include <linux/export.h>
+#include <net/cfg80211.h>
+#include "wext-compat.h"
+#include "nl80211.h"
+#include "rdev-ops.h"
+
+
+void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid,
+			    struct ieee80211_channel *channel)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_bss *bss;
+#ifdef CONFIG_CFG80211_WEXT
+	union iwreq_data wrqu;
+#endif
+
+	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC))
+		return;
+
+	if (!wdev->ssid_len)
+		return;
+
+	bss = cfg80211_get_bss(wdev->wiphy, channel, bssid, NULL, 0,
+			       WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
+
+	if (WARN_ON(!bss))
+		return;
+
+	if (wdev->current_bss) {
+		cfg80211_unhold_bss(wdev->current_bss);
+		cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
+	}
+
+	cfg80211_hold_bss(bss_from_pub(bss));
+	wdev->current_bss = bss_from_pub(bss);
+
+	cfg80211_upload_connect_keys(wdev);
+
+	nl80211_send_ibss_bssid(wiphy_to_rdev(wdev->wiphy), dev, bssid,
+				GFP_KERNEL);
+#ifdef CONFIG_CFG80211_WEXT
+	memset(&wrqu, 0, sizeof(wrqu));
+	memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
+	wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
+#endif
+}
+
+void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid,
+			  struct ieee80211_channel *channel, gfp_t gfp)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+	struct cfg80211_event *ev;
+	unsigned long flags;
+
+	trace_cfg80211_ibss_joined(dev, bssid, channel);
+
+	if (WARN_ON(!channel))
+		return;
+
+	ev = kzalloc(sizeof(*ev), gfp);
+	if (!ev)
+		return;
+
+	ev->type = EVENT_IBSS_JOINED;
+	memcpy(ev->ij.bssid, bssid, ETH_ALEN);
+	ev->ij.channel = channel;
+
+	spin_lock_irqsave(&wdev->event_lock, flags);
+	list_add_tail(&ev->list, &wdev->event_list);
+	spin_unlock_irqrestore(&wdev->event_lock, flags);
+	queue_work(cfg80211_wq, &rdev->event_work);
+}
+EXPORT_SYMBOL(cfg80211_ibss_joined);
+
+static int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
+				struct net_device *dev,
+				struct cfg80211_ibss_params *params,
+				struct cfg80211_cached_keys *connkeys)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	int err;
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (wdev->ssid_len)
+		return -EALREADY;
+
+	if (!params->basic_rates) {
+		/*
+		* If no rates were explicitly configured,
+		* use the mandatory rate set for 11b or
+		* 11a for maximum compatibility.
+		*/
+		struct ieee80211_supported_band *sband =
+			rdev->wiphy.bands[params->chandef.chan->band];
+		int j;
+		u32 flag = params->chandef.chan->band == IEEE80211_BAND_5GHZ ?
+			IEEE80211_RATE_MANDATORY_A :
+			IEEE80211_RATE_MANDATORY_B;
+
+		for (j = 0; j < sband->n_bitrates; j++) {
+			if (sband->bitrates[j].flags & flag)
+				params->basic_rates |= BIT(j);
+		}
+	}
+
+	if (WARN_ON(wdev->connect_keys))
+		kzfree(wdev->connect_keys);
+	wdev->connect_keys = connkeys;
+
+	wdev->ibss_fixed = params->channel_fixed;
+	wdev->ibss_dfs_possible = params->userspace_handles_dfs;
+	wdev->chandef = params->chandef;
+#ifdef CONFIG_CFG80211_WEXT
+	wdev->wext.ibss.chandef = params->chandef;
+#endif
+	err = rdev_join_ibss(rdev, dev, params);
+	if (err) {
+		wdev->connect_keys = NULL;
+		return err;
+	}
+
+	memcpy(wdev->ssid, params->ssid, params->ssid_len);
+	wdev->ssid_len = params->ssid_len;
+
+	return 0;
+}
+
+int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
+		       struct net_device *dev,
+		       struct cfg80211_ibss_params *params,
+		       struct cfg80211_cached_keys *connkeys)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	int err;
+
+	ASSERT_RTNL();
+
+	wdev_lock(wdev);
+	err = __cfg80211_join_ibss(rdev, dev, params, connkeys);
+	wdev_unlock(wdev);
+
+	return err;
+}
+
+static void __cfg80211_clear_ibss(struct net_device *dev, bool nowext)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+	int i;
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	kzfree(wdev->connect_keys);
+	wdev->connect_keys = NULL;
+
+	rdev_set_qos_map(rdev, dev, NULL);
+
+	/*
+	 * Delete all the keys ... pairwise keys can't really
+	 * exist any more anyway, but default keys might.
+	 */
+	if (rdev->ops->del_key)
+		for (i = 0; i < 6; i++)
+			rdev_del_key(rdev, dev, i, false, NULL);
+
+	if (wdev->current_bss) {
+		cfg80211_unhold_bss(wdev->current_bss);
+		cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
+	}
+
+	wdev->current_bss = NULL;
+	wdev->ssid_len = 0;
+	memset(&wdev->chandef, 0, sizeof(wdev->chandef));
+#ifdef CONFIG_CFG80211_WEXT
+	if (!nowext)
+		wdev->wext.ibss.ssid_len = 0;
+#endif
+}
+
+void cfg80211_clear_ibss(struct net_device *dev, bool nowext)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+
+	wdev_lock(wdev);
+	__cfg80211_clear_ibss(dev, nowext);
+	wdev_unlock(wdev);
+}
+
+int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
+			  struct net_device *dev, bool nowext)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	int err;
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (!wdev->ssid_len)
+		return -ENOLINK;
+
+	err = rdev_leave_ibss(rdev, dev);
+
+	if (err)
+		return err;
+
+	__cfg80211_clear_ibss(dev, nowext);
+
+	return 0;
+}
+
+int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
+			struct net_device *dev, bool nowext)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	int err;
+
+	wdev_lock(wdev);
+	err = __cfg80211_leave_ibss(rdev, dev, nowext);
+	wdev_unlock(wdev);
+
+	return err;
+}
+
+#ifdef CONFIG_CFG80211_WEXT
+int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
+			    struct wireless_dev *wdev)
+{
+	struct cfg80211_cached_keys *ck = NULL;
+	enum ieee80211_band band;
+	int i, err;
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (!wdev->wext.ibss.beacon_interval)
+		wdev->wext.ibss.beacon_interval = 100;
+
+	/* try to find an IBSS channel if none requested ... */
+	if (!wdev->wext.ibss.chandef.chan) {
+		struct ieee80211_channel *new_chan = NULL;
+
+		for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+			struct ieee80211_supported_band *sband;
+			struct ieee80211_channel *chan;
+
+			sband = rdev->wiphy.bands[band];
+			if (!sband)
+				continue;
+
+			for (i = 0; i < sband->n_channels; i++) {
+				chan = &sband->channels[i];
+				if (chan->flags & IEEE80211_CHAN_NO_IR)
+					continue;
+				if (chan->flags & IEEE80211_CHAN_DISABLED)
+					continue;
+				new_chan = chan;
+				break;
+			}
+
+			if (new_chan)
+				break;
+		}
+
+		if (!new_chan)
+			return -EINVAL;
+
+		cfg80211_chandef_create(&wdev->wext.ibss.chandef, new_chan,
+					NL80211_CHAN_NO_HT);
+	}
+
+	/* don't join -- SSID is not there */
+	if (!wdev->wext.ibss.ssid_len)
+		return 0;
+
+	if (!netif_running(wdev->netdev))
+		return 0;
+
+	if (wdev->wext.keys) {
+		wdev->wext.keys->def = wdev->wext.default_key;
+		wdev->wext.keys->defmgmt = wdev->wext.default_mgmt_key;
+	}
+
+	wdev->wext.ibss.privacy = wdev->wext.default_key != -1;
+
+	if (wdev->wext.keys) {
+		ck = kmemdup(wdev->wext.keys, sizeof(*ck), GFP_KERNEL);
+		if (!ck)
+			return -ENOMEM;
+		for (i = 0; i < 6; i++)
+			ck->params[i].key = ck->data[i];
+	}
+	err = __cfg80211_join_ibss(rdev, wdev->netdev,
+				   &wdev->wext.ibss, ck);
+	if (err)
+		kfree(ck);
+
+	return err;
+}
+
+int cfg80211_ibss_wext_siwfreq(struct net_device *dev,
+			       struct iw_request_info *info,
+			       struct iw_freq *wextfreq, char *extra)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+	struct ieee80211_channel *chan = NULL;
+	int err, freq;
+
+	/* call only for ibss! */
+	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC))
+		return -EINVAL;
+
+	if (!rdev->ops->join_ibss)
+		return -EOPNOTSUPP;
+
+	freq = cfg80211_wext_freq(wextfreq);
+	if (freq < 0)
+		return freq;
+
+	if (freq) {
+		chan = ieee80211_get_channel(wdev->wiphy, freq);
+		if (!chan)
+			return -EINVAL;
+		if (chan->flags & IEEE80211_CHAN_NO_IR ||
+		    chan->flags & IEEE80211_CHAN_DISABLED)
+			return -EINVAL;
+	}
+
+	if (wdev->wext.ibss.chandef.chan == chan)
+		return 0;
+
+	wdev_lock(wdev);
+	err = 0;
+	if (wdev->ssid_len)
+		err = __cfg80211_leave_ibss(rdev, dev, true);
+	wdev_unlock(wdev);
+
+	if (err)
+		return err;
+
+	if (chan) {
+		cfg80211_chandef_create(&wdev->wext.ibss.chandef, chan,
+					NL80211_CHAN_NO_HT);
+		wdev->wext.ibss.channel_fixed = true;
+	} else {
+		/* cfg80211_ibss_wext_join will pick one if needed */
+		wdev->wext.ibss.channel_fixed = false;
+	}
+
+	wdev_lock(wdev);
+	err = cfg80211_ibss_wext_join(rdev, wdev);
+	wdev_unlock(wdev);
+
+	return err;
+}
+
+int cfg80211_ibss_wext_giwfreq(struct net_device *dev,
+			       struct iw_request_info *info,
+			       struct iw_freq *freq, char *extra)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct ieee80211_channel *chan = NULL;
+
+	/* call only for ibss! */
+	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC))
+		return -EINVAL;
+
+	wdev_lock(wdev);
+	if (wdev->current_bss)
+		chan = wdev->current_bss->pub.channel;
+	else if (wdev->wext.ibss.chandef.chan)
+		chan = wdev->wext.ibss.chandef.chan;
+	wdev_unlock(wdev);
+
+	if (chan) {
+		freq->m = chan->center_freq;
+		freq->e = 6;
+		return 0;
+	}
+
+	/* no channel if not joining */
+	return -EINVAL;
+}
+
+int cfg80211_ibss_wext_siwessid(struct net_device *dev,
+				struct iw_request_info *info,
+				struct iw_point *data, char *ssid)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+	size_t len = data->length;
+	int err;
+
+	/* call only for ibss! */
+	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC))
+		return -EINVAL;
+
+	if (!rdev->ops->join_ibss)
+		return -EOPNOTSUPP;
+
+	wdev_lock(wdev);
+	err = 0;
+	if (wdev->ssid_len)
+		err = __cfg80211_leave_ibss(rdev, dev, true);
+	wdev_unlock(wdev);
+
+	if (err)
+		return err;
+
+	/* iwconfig uses nul termination in SSID.. */
+	if (len > 0 && ssid[len - 1] == '\0')
+		len--;
+
+	memcpy(wdev->ssid, ssid, len);
+	wdev->wext.ibss.ssid = wdev->ssid;
+	wdev->wext.ibss.ssid_len = len;
+
+	wdev_lock(wdev);
+	err = cfg80211_ibss_wext_join(rdev, wdev);
+	wdev_unlock(wdev);
+
+	return err;
+}
+
+int cfg80211_ibss_wext_giwessid(struct net_device *dev,
+				struct iw_request_info *info,
+				struct iw_point *data, char *ssid)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+
+	/* call only for ibss! */
+	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC))
+		return -EINVAL;
+
+	data->flags = 0;
+
+	wdev_lock(wdev);
+	if (wdev->ssid_len) {
+		data->flags = 1;
+		data->length = wdev->ssid_len;
+		memcpy(ssid, wdev->ssid, data->length);
+	} else if (wdev->wext.ibss.ssid && wdev->wext.ibss.ssid_len) {
+		data->flags = 1;
+		data->length = wdev->wext.ibss.ssid_len;
+		memcpy(ssid, wdev->wext.ibss.ssid, data->length);
+	}
+	wdev_unlock(wdev);
+
+	return 0;
+}
+
+int cfg80211_ibss_wext_siwap(struct net_device *dev,
+			     struct iw_request_info *info,
+			     struct sockaddr *ap_addr, char *extra)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+	u8 *bssid = ap_addr->sa_data;
+	int err;
+
+	/* call only for ibss! */
+	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC))
+		return -EINVAL;
+
+	if (!rdev->ops->join_ibss)
+		return -EOPNOTSUPP;
+
+	if (ap_addr->sa_family != ARPHRD_ETHER)
+		return -EINVAL;
+
+	/* automatic mode */
+	if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid))
+		bssid = NULL;
+
+	if (bssid && !is_valid_ether_addr(bssid))
+		return -EINVAL;
+
+	/* both automatic */
+	if (!bssid && !wdev->wext.ibss.bssid)
+		return 0;
+
+	/* fixed already - and no change */
+	if (wdev->wext.ibss.bssid && bssid &&
+	    ether_addr_equal(bssid, wdev->wext.ibss.bssid))
+		return 0;
+
+	wdev_lock(wdev);
+	err = 0;
+	if (wdev->ssid_len)
+		err = __cfg80211_leave_ibss(rdev, dev, true);
+	wdev_unlock(wdev);
+
+	if (err)
+		return err;
+
+	if (bssid) {
+		memcpy(wdev->wext.bssid, bssid, ETH_ALEN);
+		wdev->wext.ibss.bssid = wdev->wext.bssid;
+	} else
+		wdev->wext.ibss.bssid = NULL;
+
+	wdev_lock(wdev);
+	err = cfg80211_ibss_wext_join(rdev, wdev);
+	wdev_unlock(wdev);
+
+	return err;
+}
+
+int cfg80211_ibss_wext_giwap(struct net_device *dev,
+			     struct iw_request_info *info,
+			     struct sockaddr *ap_addr, char *extra)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+
+	/* call only for ibss! */
+	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC))
+		return -EINVAL;
+
+	ap_addr->sa_family = ARPHRD_ETHER;
+
+	wdev_lock(wdev);
+	if (wdev->current_bss)
+		memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN);
+	else if (wdev->wext.ibss.bssid)
+		memcpy(ap_addr->sa_data, wdev->wext.ibss.bssid, ETH_ALEN);
+	else
+		memset(ap_addr->sa_data, 0, ETH_ALEN);
+
+	wdev_unlock(wdev);
+
+	return 0;
+}
+#endif

net/wireless/lib80211.c

@@ -0,0 +1,257 @@
+/*
+ * lib80211 -- common bits for IEEE802.11 drivers
+ *
+ * Copyright(c) 2008 John W. Linville <linville@tuxdriver.com>
+ *
+ * Portions copied from old ieee80211 component, w/ original copyright
+ * notices below:
+ *
+ * Host AP crypto routines
+ *
+ * Copyright (c) 2002-2003, Jouni Malinen <j@w1.fi>
+ * Portions Copyright (C) 2004, Intel Corporation <jketreno@linux.intel.com>
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/ctype.h>
+#include <linux/ieee80211.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+
+#include <net/lib80211.h>
+
+#define DRV_NAME        "lib80211"
+
+#define DRV_DESCRIPTION	"common routines for IEEE802.11 drivers"
+
+MODULE_DESCRIPTION(DRV_DESCRIPTION);
+MODULE_AUTHOR("John W. Linville <linville@tuxdriver.com>");
+MODULE_LICENSE("GPL");
+
+struct lib80211_crypto_alg {
+	struct list_head list;
+	struct lib80211_crypto_ops *ops;
+};
+
+static LIST_HEAD(lib80211_crypto_algs);
+static DEFINE_SPINLOCK(lib80211_crypto_lock);
+
+static void lib80211_crypt_deinit_entries(struct lib80211_crypt_info *info,
+					  int force);
+static void lib80211_crypt_quiescing(struct lib80211_crypt_info *info);
+static void lib80211_crypt_deinit_handler(unsigned long data);
+
+int lib80211_crypt_info_init(struct lib80211_crypt_info *info, char *name,
+				spinlock_t *lock)
+{
+	memset(info, 0, sizeof(*info));
+
+	info->name = name;
+	info->lock = lock;
+
+	INIT_LIST_HEAD(&info->crypt_deinit_list);
+	setup_timer(&info->crypt_deinit_timer, lib80211_crypt_deinit_handler,
+			(unsigned long)info);
+
+	return 0;
+}
+EXPORT_SYMBOL(lib80211_crypt_info_init);
+
+void lib80211_crypt_info_free(struct lib80211_crypt_info *info)
+{
+	int i;
+
+        lib80211_crypt_quiescing(info);
+        del_timer_sync(&info->crypt_deinit_timer);
+        lib80211_crypt_deinit_entries(info, 1);
+
+        for (i = 0; i < NUM_WEP_KEYS; i++) {
+                struct lib80211_crypt_data *crypt = info->crypt[i];
+                if (crypt) {
+                        if (crypt->ops) {
+                                crypt->ops->deinit(crypt->priv);
+                                module_put(crypt->ops->owner);
+                        }
+                        kfree(crypt);
+                        info->crypt[i] = NULL;
+                }
+        }
+}
+EXPORT_SYMBOL(lib80211_crypt_info_free);
+
+static void lib80211_crypt_deinit_entries(struct lib80211_crypt_info *info,
+					  int force)
+{
+	struct lib80211_crypt_data *entry, *next;
+	unsigned long flags;
+
+	spin_lock_irqsave(info->lock, flags);
+	list_for_each_entry_safe(entry, next, &info->crypt_deinit_list, list) {
+		if (atomic_read(&entry->refcnt) != 0 && !force)
+			continue;
+
+		list_del(&entry->list);
+
+		if (entry->ops) {
+			entry->ops->deinit(entry->priv);
+			module_put(entry->ops->owner);
+		}
+		kfree(entry);
+	}
+	spin_unlock_irqrestore(info->lock, flags);
+}
+
+/* After this, crypt_deinit_list won't accept new members */
+static void lib80211_crypt_quiescing(struct lib80211_crypt_info *info)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(info->lock, flags);
+	info->crypt_quiesced = 1;
+	spin_unlock_irqrestore(info->lock, flags);
+}
+
+static void lib80211_crypt_deinit_handler(unsigned long data)
+{
+	struct lib80211_crypt_info *info = (struct lib80211_crypt_info *)data;
+	unsigned long flags;
+
+	lib80211_crypt_deinit_entries(info, 0);
+
+	spin_lock_irqsave(info->lock, flags);
+	if (!list_empty(&info->crypt_deinit_list) && !info->crypt_quiesced) {
+		printk(KERN_DEBUG "%s: entries remaining in delayed crypt "
+		       "deletion list\n", info->name);
+		info->crypt_deinit_timer.expires = jiffies + HZ;
+		add_timer(&info->crypt_deinit_timer);
+	}
+	spin_unlock_irqrestore(info->lock, flags);
+}
+
+void lib80211_crypt_delayed_deinit(struct lib80211_crypt_info *info,
+				    struct lib80211_crypt_data **crypt)
+{
+	struct lib80211_crypt_data *tmp;
+	unsigned long flags;
+
+	if (*crypt == NULL)
+		return;
+
+	tmp = *crypt;
+	*crypt = NULL;
+
+	/* must not run ops->deinit() while there may be pending encrypt or
+	 * decrypt operations. Use a list of delayed deinits to avoid needing
+	 * locking. */
+
+	spin_lock_irqsave(info->lock, flags);
+	if (!info->crypt_quiesced) {
+		list_add(&tmp->list, &info->crypt_deinit_list);
+		if (!timer_pending(&info->crypt_deinit_timer)) {
+			info->crypt_deinit_timer.expires = jiffies + HZ;
+			add_timer(&info->crypt_deinit_timer);
+		}
+	}
+	spin_unlock_irqrestore(info->lock, flags);
+}
+EXPORT_SYMBOL(lib80211_crypt_delayed_deinit);
+
+int lib80211_register_crypto_ops(struct lib80211_crypto_ops *ops)
+{
+	unsigned long flags;
+	struct lib80211_crypto_alg *alg;
+
+	alg = kzalloc(sizeof(*alg), GFP_KERNEL);
+	if (alg == NULL)
+		return -ENOMEM;
+
+	alg->ops = ops;
+
+	spin_lock_irqsave(&lib80211_crypto_lock, flags);
+	list_add(&alg->list, &lib80211_crypto_algs);
+	spin_unlock_irqrestore(&lib80211_crypto_lock, flags);
+
+	printk(KERN_DEBUG "lib80211_crypt: registered algorithm '%s'\n",
+	       ops->name);
+
+	return 0;
+}
+EXPORT_SYMBOL(lib80211_register_crypto_ops);
+
+int lib80211_unregister_crypto_ops(struct lib80211_crypto_ops *ops)
+{
+	struct lib80211_crypto_alg *alg;
+	unsigned long flags;
+
+	spin_lock_irqsave(&lib80211_crypto_lock, flags);
+	list_for_each_entry(alg, &lib80211_crypto_algs, list) {
+		if (alg->ops == ops)
+			goto found;
+	}
+	spin_unlock_irqrestore(&lib80211_crypto_lock, flags);
+	return -EINVAL;
+
+      found:
+	printk(KERN_DEBUG "lib80211_crypt: unregistered algorithm '%s'\n",
+	       ops->name);
+	list_del(&alg->list);
+	spin_unlock_irqrestore(&lib80211_crypto_lock, flags);
+	kfree(alg);
+	return 0;
+}
+EXPORT_SYMBOL(lib80211_unregister_crypto_ops);
+
+struct lib80211_crypto_ops *lib80211_get_crypto_ops(const char *name)
+{
+	struct lib80211_crypto_alg *alg;
+	unsigned long flags;
+
+	spin_lock_irqsave(&lib80211_crypto_lock, flags);
+	list_for_each_entry(alg, &lib80211_crypto_algs, list) {
+		if (strcmp(alg->ops->name, name) == 0)
+			goto found;
+	}
+	spin_unlock_irqrestore(&lib80211_crypto_lock, flags);
+	return NULL;
+
+      found:
+	spin_unlock_irqrestore(&lib80211_crypto_lock, flags);
+	return alg->ops;
+}
+EXPORT_SYMBOL(lib80211_get_crypto_ops);
+
+static void *lib80211_crypt_null_init(int keyidx)
+{
+	return (void *)1;
+}
+
+static void lib80211_crypt_null_deinit(void *priv)
+{
+}
+
+static struct lib80211_crypto_ops lib80211_crypt_null = {
+	.name = "NULL",
+	.init = lib80211_crypt_null_init,
+	.deinit = lib80211_crypt_null_deinit,
+	.owner = THIS_MODULE,
+};
+
+static int __init lib80211_init(void)
+{
+	pr_info(DRV_DESCRIPTION "\n");
+	return lib80211_register_crypto_ops(&lib80211_crypt_null);
+}
+
+static void __exit lib80211_exit(void)
+{
+	lib80211_unregister_crypto_ops(&lib80211_crypt_null);
+	BUG_ON(!list_empty(&lib80211_crypto_algs));
+}
+
+module_init(lib80211_init);
+module_exit(lib80211_exit);

net/wireless/lib80211_crypt_ccmp.c

@@ -0,0 +1,479 @@
+/*
+ * lib80211 crypt: host-based CCMP encryption implementation for lib80211
+ *
+ * Copyright (c) 2003-2004, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2008, John W. Linville <linville@tuxdriver.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation. See README and COPYING for
+ * more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/random.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/if_ether.h>
+#include <linux/if_arp.h>
+#include <asm/string.h>
+#include <linux/wireless.h>
+
+#include <linux/ieee80211.h>
+
+#include <linux/crypto.h>
+
+#include <net/lib80211.h>
+
+MODULE_AUTHOR("Jouni Malinen");
+MODULE_DESCRIPTION("Host AP crypt: CCMP");
+MODULE_LICENSE("GPL");
+
+#define AES_BLOCK_LEN 16
+#define CCMP_HDR_LEN 8
+#define CCMP_MIC_LEN 8
+#define CCMP_TK_LEN 16
+#define CCMP_PN_LEN 6
+
+struct lib80211_ccmp_data {
+	u8 key[CCMP_TK_LEN];
+	int key_set;
+
+	u8 tx_pn[CCMP_PN_LEN];
+	u8 rx_pn[CCMP_PN_LEN];
+
+	u32 dot11RSNAStatsCCMPFormatErrors;
+	u32 dot11RSNAStatsCCMPReplays;
+	u32 dot11RSNAStatsCCMPDecryptErrors;
+
+	int key_idx;
+
+	struct crypto_cipher *tfm;
+
+	/* scratch buffers for virt_to_page() (crypto API) */
+	u8 tx_b0[AES_BLOCK_LEN], tx_b[AES_BLOCK_LEN],
+	    tx_e[AES_BLOCK_LEN], tx_s0[AES_BLOCK_LEN];
+	u8 rx_b0[AES_BLOCK_LEN], rx_b[AES_BLOCK_LEN], rx_a[AES_BLOCK_LEN];
+};
+
+static inline void lib80211_ccmp_aes_encrypt(struct crypto_cipher *tfm,
+					      const u8 pt[16], u8 ct[16])
+{
+	crypto_cipher_encrypt_one(tfm, ct, pt);
+}
+
+static void *lib80211_ccmp_init(int key_idx)
+{
+	struct lib80211_ccmp_data *priv;
+
+	priv = kzalloc(sizeof(*priv), GFP_ATOMIC);
+	if (priv == NULL)
+		goto fail;
+	priv->key_idx = key_idx;
+
+	priv->tfm = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC);
+	if (IS_ERR(priv->tfm)) {
+		priv->tfm = NULL;
+		goto fail;
+	}
+
+	return priv;
+
+      fail:
+	if (priv) {
+		if (priv->tfm)
+			crypto_free_cipher(priv->tfm);
+		kfree(priv);
+	}
+
+	return NULL;
+}
+
+static void lib80211_ccmp_deinit(void *priv)
+{
+	struct lib80211_ccmp_data *_priv = priv;
+	if (_priv && _priv->tfm)
+		crypto_free_cipher(_priv->tfm);
+	kfree(priv);
+}
+
+static inline void xor_block(u8 * b, u8 * a, size_t len)
+{
+	int i;
+	for (i = 0; i < len; i++)
+		b[i] ^= a[i];
+}
+
+static void ccmp_init_blocks(struct crypto_cipher *tfm,
+			     struct ieee80211_hdr *hdr,
+			     u8 * pn, size_t dlen, u8 * b0, u8 * auth, u8 * s0)
+{
+	u8 *pos, qc = 0;
+	size_t aad_len;
+	int a4_included, qc_included;
+	u8 aad[2 * AES_BLOCK_LEN];
+
+	a4_included = ieee80211_has_a4(hdr->frame_control);
+	qc_included = ieee80211_is_data_qos(hdr->frame_control);
+
+	aad_len = 22;
+	if (a4_included)
+		aad_len += 6;
+	if (qc_included) {
+		pos = (u8 *) & hdr->addr4;
+		if (a4_included)
+			pos += 6;
+		qc = *pos & 0x0f;
+		aad_len += 2;
+	}
+
+	/* CCM Initial Block:
+	 * Flag (Include authentication header, M=3 (8-octet MIC),
+	 *       L=1 (2-octet Dlen))
+	 * Nonce: 0x00 | A2 | PN
+	 * Dlen */
+	b0[0] = 0x59;
+	b0[1] = qc;
+	memcpy(b0 + 2, hdr->addr2, ETH_ALEN);
+	memcpy(b0 + 8, pn, CCMP_PN_LEN);
+	b0[14] = (dlen >> 8) & 0xff;
+	b0[15] = dlen & 0xff;
+
+	/* AAD:
+	 * FC with bits 4..6 and 11..13 masked to zero; 14 is always one
+	 * A1 | A2 | A3
+	 * SC with bits 4..15 (seq#) masked to zero
+	 * A4 (if present)
+	 * QC (if present)
+	 */
+	pos = (u8 *) hdr;
+	aad[0] = 0;		/* aad_len >> 8 */
+	aad[1] = aad_len & 0xff;
+	aad[2] = pos[0] & 0x8f;
+	aad[3] = pos[1] & 0xc7;
+	memcpy(aad + 4, hdr->addr1, 3 * ETH_ALEN);
+	pos = (u8 *) & hdr->seq_ctrl;
+	aad[22] = pos[0] & 0x0f;
+	aad[23] = 0;		/* all bits masked */
+	memset(aad + 24, 0, 8);
+	if (a4_included)
+		memcpy(aad + 24, hdr->addr4, ETH_ALEN);
+	if (qc_included) {
+		aad[a4_included ? 30 : 24] = qc;
+		/* rest of QC masked */
+	}
+
+	/* Start with the first block and AAD */
+	lib80211_ccmp_aes_encrypt(tfm, b0, auth);
+	xor_block(auth, aad, AES_BLOCK_LEN);
+	lib80211_ccmp_aes_encrypt(tfm, auth, auth);
+	xor_block(auth, &aad[AES_BLOCK_LEN], AES_BLOCK_LEN);
+	lib80211_ccmp_aes_encrypt(tfm, auth, auth);
+	b0[0] &= 0x07;
+	b0[14] = b0[15] = 0;
+	lib80211_ccmp_aes_encrypt(tfm, b0, s0);
+}
+
+static int lib80211_ccmp_hdr(struct sk_buff *skb, int hdr_len,
+			      u8 *aeskey, int keylen, void *priv)
+{
+	struct lib80211_ccmp_data *key = priv;
+	int i;
+	u8 *pos;
+
+	if (skb_headroom(skb) < CCMP_HDR_LEN || skb->len < hdr_len)
+		return -1;
+
+	if (aeskey != NULL && keylen >= CCMP_TK_LEN)
+		memcpy(aeskey, key->key, CCMP_TK_LEN);
+
+	pos = skb_push(skb, CCMP_HDR_LEN);
+	memmove(pos, pos + CCMP_HDR_LEN, hdr_len);
+	pos += hdr_len;
+
+	i = CCMP_PN_LEN - 1;
+	while (i >= 0) {
+		key->tx_pn[i]++;
+		if (key->tx_pn[i] != 0)
+			break;
+		i--;
+	}
+
+	*pos++ = key->tx_pn[5];
+	*pos++ = key->tx_pn[4];
+	*pos++ = 0;
+	*pos++ = (key->key_idx << 6) | (1 << 5) /* Ext IV included */ ;
+	*pos++ = key->tx_pn[3];
+	*pos++ = key->tx_pn[2];
+	*pos++ = key->tx_pn[1];
+	*pos++ = key->tx_pn[0];
+
+	return CCMP_HDR_LEN;
+}
+
+static int lib80211_ccmp_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
+{
+	struct lib80211_ccmp_data *key = priv;
+	int data_len, i, blocks, last, len;
+	u8 *pos, *mic;
+	struct ieee80211_hdr *hdr;
+	u8 *b0 = key->tx_b0;
+	u8 *b = key->tx_b;
+	u8 *e = key->tx_e;
+	u8 *s0 = key->tx_s0;
+
+	if (skb_tailroom(skb) < CCMP_MIC_LEN || skb->len < hdr_len)
+		return -1;
+
+	data_len = skb->len - hdr_len;
+	len = lib80211_ccmp_hdr(skb, hdr_len, NULL, 0, priv);
+	if (len < 0)
+		return -1;
+
+	pos = skb->data + hdr_len + CCMP_HDR_LEN;
+	hdr = (struct ieee80211_hdr *)skb->data;
+	ccmp_init_blocks(key->tfm, hdr, key->tx_pn, data_len, b0, b, s0);
+
+	blocks = DIV_ROUND_UP(data_len, AES_BLOCK_LEN);
+	last = data_len % AES_BLOCK_LEN;
+
+	for (i = 1; i <= blocks; i++) {
+		len = (i == blocks && last) ? last : AES_BLOCK_LEN;
+		/* Authentication */
+		xor_block(b, pos, len);
+		lib80211_ccmp_aes_encrypt(key->tfm, b, b);
+		/* Encryption, with counter */
+		b0[14] = (i >> 8) & 0xff;
+		b0[15] = i & 0xff;
+		lib80211_ccmp_aes_encrypt(key->tfm, b0, e);
+		xor_block(pos, e, len);
+		pos += len;
+	}
+
+	mic = skb_put(skb, CCMP_MIC_LEN);
+	for (i = 0; i < CCMP_MIC_LEN; i++)
+		mic[i] = b[i] ^ s0[i];
+
+	return 0;
+}
+
+/*
+ * deal with seq counter wrapping correctly.
+ * refer to timer_after() for jiffies wrapping handling
+ */
+static inline int ccmp_replay_check(u8 *pn_n, u8 *pn_o)
+{
+	u32 iv32_n, iv16_n;
+	u32 iv32_o, iv16_o;
+
+	iv32_n = (pn_n[0] << 24) | (pn_n[1] << 16) | (pn_n[2] << 8) | pn_n[3];
+	iv16_n = (pn_n[4] << 8) | pn_n[5];
+
+	iv32_o = (pn_o[0] << 24) | (pn_o[1] << 16) | (pn_o[2] << 8) | pn_o[3];
+	iv16_o = (pn_o[4] << 8) | pn_o[5];
+
+	if ((s32)iv32_n - (s32)iv32_o < 0 ||
+	    (iv32_n == iv32_o && iv16_n <= iv16_o))
+		return 1;
+	return 0;
+}
+
+static int lib80211_ccmp_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
+{
+	struct lib80211_ccmp_data *key = priv;
+	u8 keyidx, *pos;
+	struct ieee80211_hdr *hdr;
+	u8 *b0 = key->rx_b0;
+	u8 *b = key->rx_b;
+	u8 *a = key->rx_a;
+	u8 pn[6];
+	int i, blocks, last, len;
+	size_t data_len = skb->len - hdr_len - CCMP_HDR_LEN - CCMP_MIC_LEN;
+	u8 *mic = skb->data + skb->len - CCMP_MIC_LEN;
+
+	if (skb->len < hdr_len + CCMP_HDR_LEN + CCMP_MIC_LEN) {
+		key->dot11RSNAStatsCCMPFormatErrors++;
+		return -1;
+	}
+
+	hdr = (struct ieee80211_hdr *)skb->data;
+	pos = skb->data + hdr_len;
+	keyidx = pos[3];
+	if (!(keyidx & (1 << 5))) {
+		net_dbg_ratelimited("CCMP: received packet without ExtIV flag from %pM\n",
+				    hdr->addr2);
+		key->dot11RSNAStatsCCMPFormatErrors++;
+		return -2;
+	}
+	keyidx >>= 6;
+	if (key->key_idx != keyidx) {
+		printk(KERN_DEBUG "CCMP: RX tkey->key_idx=%d frame "
+		       "keyidx=%d priv=%p\n", key->key_idx, keyidx, priv);
+		return -6;
+	}
+	if (!key->key_set) {
+		net_dbg_ratelimited("CCMP: received packet from %pM with keyid=%d that does not have a configured key\n",
+				    hdr->addr2, keyidx);
+		return -3;
+	}
+
+	pn[0] = pos[7];
+	pn[1] = pos[6];
+	pn[2] = pos[5];
+	pn[3] = pos[4];
+	pn[4] = pos[1];
+	pn[5] = pos[0];
+	pos += 8;
+
+	if (ccmp_replay_check(pn, key->rx_pn)) {
+#ifdef CONFIG_LIB80211_DEBUG
+		net_dbg_ratelimited("CCMP: replay detected: STA=%pM previous PN %02x%02x%02x%02x%02x%02x received PN %02x%02x%02x%02x%02x%02x\n",
+				    hdr->addr2,
+				    key->rx_pn[0], key->rx_pn[1], key->rx_pn[2],
+				    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;
+	}
+
+	ccmp_init_blocks(key->tfm, hdr, pn, data_len, b0, a, b);
+	xor_block(mic, b, CCMP_MIC_LEN);
+
+	blocks = DIV_ROUND_UP(data_len, AES_BLOCK_LEN);
+	last = data_len % AES_BLOCK_LEN;
+
+	for (i = 1; i <= blocks; i++) {
+		len = (i == blocks && last) ? last : AES_BLOCK_LEN;
+		/* Decrypt, with counter */
+		b0[14] = (i >> 8) & 0xff;
+		b0[15] = i & 0xff;
+		lib80211_ccmp_aes_encrypt(key->tfm, b0, b);
+		xor_block(pos, b, len);
+		/* Authentication */
+		xor_block(a, pos, len);
+		lib80211_ccmp_aes_encrypt(key->tfm, a, a);
+		pos += len;
+	}
+
+	if (memcmp(mic, a, CCMP_MIC_LEN) != 0) {
+		net_dbg_ratelimited("CCMP: decrypt failed: STA=%pM\n",
+				    hdr->addr2);
+		key->dot11RSNAStatsCCMPDecryptErrors++;
+		return -5;
+	}
+
+	memcpy(key->rx_pn, pn, CCMP_PN_LEN);
+
+	/* Remove hdr and MIC */
+	memmove(skb->data + CCMP_HDR_LEN, skb->data, hdr_len);
+	skb_pull(skb, CCMP_HDR_LEN);
+	skb_trim(skb, skb->len - CCMP_MIC_LEN);
+
+	return keyidx;
+}
+
+static int lib80211_ccmp_set_key(void *key, int len, u8 * seq, void *priv)
+{
+	struct lib80211_ccmp_data *data = priv;
+	int keyidx;
+	struct crypto_cipher *tfm = data->tfm;
+
+	keyidx = data->key_idx;
+	memset(data, 0, sizeof(*data));
+	data->key_idx = keyidx;
+	data->tfm = tfm;
+	if (len == CCMP_TK_LEN) {
+		memcpy(data->key, key, CCMP_TK_LEN);
+		data->key_set = 1;
+		if (seq) {
+			data->rx_pn[0] = seq[5];
+			data->rx_pn[1] = seq[4];
+			data->rx_pn[2] = seq[3];
+			data->rx_pn[3] = seq[2];
+			data->rx_pn[4] = seq[1];
+			data->rx_pn[5] = seq[0];
+		}
+		crypto_cipher_setkey(data->tfm, data->key, CCMP_TK_LEN);
+	} else if (len == 0)
+		data->key_set = 0;
+	else
+		return -1;
+
+	return 0;
+}
+
+static int lib80211_ccmp_get_key(void *key, int len, u8 * seq, void *priv)
+{
+	struct lib80211_ccmp_data *data = priv;
+
+	if (len < CCMP_TK_LEN)
+		return -1;
+
+	if (!data->key_set)
+		return 0;
+	memcpy(key, data->key, CCMP_TK_LEN);
+
+	if (seq) {
+		seq[0] = data->tx_pn[5];
+		seq[1] = data->tx_pn[4];
+		seq[2] = data->tx_pn[3];
+		seq[3] = data->tx_pn[2];
+		seq[4] = data->tx_pn[1];
+		seq[5] = data->tx_pn[0];
+	}
+
+	return CCMP_TK_LEN;
+}
+
+static void lib80211_ccmp_print_stats(struct seq_file *m, void *priv)
+{
+	struct lib80211_ccmp_data *ccmp = priv;
+
+	seq_printf(m,
+		   "key[%d] alg=CCMP key_set=%d "
+		   "tx_pn=%02x%02x%02x%02x%02x%02x "
+		   "rx_pn=%02x%02x%02x%02x%02x%02x "
+		   "format_errors=%d replays=%d decrypt_errors=%d\n",
+		   ccmp->key_idx, ccmp->key_set,
+		   ccmp->tx_pn[0], ccmp->tx_pn[1], ccmp->tx_pn[2],
+		   ccmp->tx_pn[3], ccmp->tx_pn[4], ccmp->tx_pn[5],
+		   ccmp->rx_pn[0], ccmp->rx_pn[1], ccmp->rx_pn[2],
+		   ccmp->rx_pn[3], ccmp->rx_pn[4], ccmp->rx_pn[5],
+		   ccmp->dot11RSNAStatsCCMPFormatErrors,
+		   ccmp->dot11RSNAStatsCCMPReplays,
+		   ccmp->dot11RSNAStatsCCMPDecryptErrors);
+}
+
+static struct lib80211_crypto_ops lib80211_crypt_ccmp = {
+	.name = "CCMP",
+	.init = lib80211_ccmp_init,
+	.deinit = lib80211_ccmp_deinit,
+	.encrypt_mpdu = lib80211_ccmp_encrypt,
+	.decrypt_mpdu = lib80211_ccmp_decrypt,
+	.encrypt_msdu = NULL,
+	.decrypt_msdu = NULL,
+	.set_key = lib80211_ccmp_set_key,
+	.get_key = lib80211_ccmp_get_key,
+	.print_stats = lib80211_ccmp_print_stats,
+	.extra_mpdu_prefix_len = CCMP_HDR_LEN,
+	.extra_mpdu_postfix_len = CCMP_MIC_LEN,
+	.owner = THIS_MODULE,
+};
+
+static int __init lib80211_crypto_ccmp_init(void)
+{
+	return lib80211_register_crypto_ops(&lib80211_crypt_ccmp);
+}
+
+static void __exit lib80211_crypto_ccmp_exit(void)
+{
+	lib80211_unregister_crypto_ops(&lib80211_crypt_ccmp);
+}
+
+module_init(lib80211_crypto_ccmp_init);
+module_exit(lib80211_crypto_ccmp_exit);

net/wireless/lib80211_crypt_tkip.c

@@ -0,0 +1,762 @@
+/*
+ * lib80211 crypt: host-based TKIP encryption implementation for lib80211
+ *
+ * Copyright (c) 2003-2004, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2008, John W. Linville <linville@tuxdriver.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation. See README and COPYING for
+ * more details.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/random.h>
+#include <linux/scatterlist.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/mm.h>
+#include <linux/if_ether.h>
+#include <linux/if_arp.h>
+#include <asm/string.h>
+
+#include <linux/wireless.h>
+#include <linux/ieee80211.h>
+#include <net/iw_handler.h>
+
+#include <linux/crypto.h>
+#include <linux/crc32.h>
+
+#include <net/lib80211.h>
+
+MODULE_AUTHOR("Jouni Malinen");
+MODULE_DESCRIPTION("lib80211 crypt: TKIP");
+MODULE_LICENSE("GPL");
+
+#define TKIP_HDR_LEN 8
+
+struct lib80211_tkip_data {
+#define TKIP_KEY_LEN 32
+	u8 key[TKIP_KEY_LEN];
+	int key_set;
+
+	u32 tx_iv32;
+	u16 tx_iv16;
+	u16 tx_ttak[5];
+	int tx_phase1_done;
+
+	u32 rx_iv32;
+	u16 rx_iv16;
+	u16 rx_ttak[5];
+	int rx_phase1_done;
+	u32 rx_iv32_new;
+	u16 rx_iv16_new;
+
+	u32 dot11RSNAStatsTKIPReplays;
+	u32 dot11RSNAStatsTKIPICVErrors;
+	u32 dot11RSNAStatsTKIPLocalMICFailures;
+
+	int key_idx;
+
+	struct crypto_blkcipher *rx_tfm_arc4;
+	struct crypto_hash *rx_tfm_michael;
+	struct crypto_blkcipher *tx_tfm_arc4;
+	struct crypto_hash *tx_tfm_michael;
+
+	/* scratch buffers for virt_to_page() (crypto API) */
+	u8 rx_hdr[16], tx_hdr[16];
+
+	unsigned long flags;
+};
+
+static unsigned long lib80211_tkip_set_flags(unsigned long flags, void *priv)
+{
+	struct lib80211_tkip_data *_priv = priv;
+	unsigned long old_flags = _priv->flags;
+	_priv->flags = flags;
+	return old_flags;
+}
+
+static unsigned long lib80211_tkip_get_flags(void *priv)
+{
+	struct lib80211_tkip_data *_priv = priv;
+	return _priv->flags;
+}
+
+static void *lib80211_tkip_init(int key_idx)
+{
+	struct lib80211_tkip_data *priv;
+
+	priv = kzalloc(sizeof(*priv), GFP_ATOMIC);
+	if (priv == NULL)
+		goto fail;
+
+	priv->key_idx = key_idx;
+
+	priv->tx_tfm_arc4 = crypto_alloc_blkcipher("ecb(arc4)", 0,
+						CRYPTO_ALG_ASYNC);
+	if (IS_ERR(priv->tx_tfm_arc4)) {
+		priv->tx_tfm_arc4 = NULL;
+		goto fail;
+	}
+
+	priv->tx_tfm_michael = crypto_alloc_hash("michael_mic", 0,
+						 CRYPTO_ALG_ASYNC);
+	if (IS_ERR(priv->tx_tfm_michael)) {
+		priv->tx_tfm_michael = NULL;
+		goto fail;
+	}
+
+	priv->rx_tfm_arc4 = crypto_alloc_blkcipher("ecb(arc4)", 0,
+						CRYPTO_ALG_ASYNC);
+	if (IS_ERR(priv->rx_tfm_arc4)) {
+		priv->rx_tfm_arc4 = NULL;
+		goto fail;
+	}
+
+	priv->rx_tfm_michael = crypto_alloc_hash("michael_mic", 0,
+						 CRYPTO_ALG_ASYNC);
+	if (IS_ERR(priv->rx_tfm_michael)) {
+		priv->rx_tfm_michael = NULL;
+		goto fail;
+	}
+
+	return priv;
+
+      fail:
+	if (priv) {
+		if (priv->tx_tfm_michael)
+			crypto_free_hash(priv->tx_tfm_michael);
+		if (priv->tx_tfm_arc4)
+			crypto_free_blkcipher(priv->tx_tfm_arc4);
+		if (priv->rx_tfm_michael)
+			crypto_free_hash(priv->rx_tfm_michael);
+		if (priv->rx_tfm_arc4)
+			crypto_free_blkcipher(priv->rx_tfm_arc4);
+		kfree(priv);
+	}
+
+	return NULL;
+}
+
+static void lib80211_tkip_deinit(void *priv)
+{
+	struct lib80211_tkip_data *_priv = priv;
+	if (_priv) {
+		if (_priv->tx_tfm_michael)
+			crypto_free_hash(_priv->tx_tfm_michael);
+		if (_priv->tx_tfm_arc4)
+			crypto_free_blkcipher(_priv->tx_tfm_arc4);
+		if (_priv->rx_tfm_michael)
+			crypto_free_hash(_priv->rx_tfm_michael);
+		if (_priv->rx_tfm_arc4)
+			crypto_free_blkcipher(_priv->rx_tfm_arc4);
+	}
+	kfree(priv);
+}
+
+static inline u16 RotR1(u16 val)
+{
+	return (val >> 1) | (val << 15);
+}
+
+static inline u8 Lo8(u16 val)
+{
+	return val & 0xff;
+}
+
+static inline u8 Hi8(u16 val)
+{
+	return val >> 8;
+}
+
+static inline u16 Lo16(u32 val)
+{
+	return val & 0xffff;
+}
+
+static inline u16 Hi16(u32 val)
+{
+	return val >> 16;
+}
+
+static inline u16 Mk16(u8 hi, u8 lo)
+{
+	return lo | (((u16) hi) << 8);
+}
+
+static inline u16 Mk16_le(__le16 * v)
+{
+	return le16_to_cpu(*v);
+}
+
+static const u16 Sbox[256] = {
+	0xC6A5, 0xF884, 0xEE99, 0xF68D, 0xFF0D, 0xD6BD, 0xDEB1, 0x9154,
+	0x6050, 0x0203, 0xCEA9, 0x567D, 0xE719, 0xB562, 0x4DE6, 0xEC9A,
+	0x8F45, 0x1F9D, 0x8940, 0xFA87, 0xEF15, 0xB2EB, 0x8EC9, 0xFB0B,
+	0x41EC, 0xB367, 0x5FFD, 0x45EA, 0x23BF, 0x53F7, 0xE496, 0x9B5B,
+	0x75C2, 0xE11C, 0x3DAE, 0x4C6A, 0x6C5A, 0x7E41, 0xF502, 0x834F,
+	0x685C, 0x51F4, 0xD134, 0xF908, 0xE293, 0xAB73, 0x6253, 0x2A3F,
+	0x080C, 0x9552, 0x4665, 0x9D5E, 0x3028, 0x37A1, 0x0A0F, 0x2FB5,
+	0x0E09, 0x2436, 0x1B9B, 0xDF3D, 0xCD26, 0x4E69, 0x7FCD, 0xEA9F,
+	0x121B, 0x1D9E, 0x5874, 0x342E, 0x362D, 0xDCB2, 0xB4EE, 0x5BFB,
+	0xA4F6, 0x764D, 0xB761, 0x7DCE, 0x527B, 0xDD3E, 0x5E71, 0x1397,
+	0xA6F5, 0xB968, 0x0000, 0xC12C, 0x4060, 0xE31F, 0x79C8, 0xB6ED,
+	0xD4BE, 0x8D46, 0x67D9, 0x724B, 0x94DE, 0x98D4, 0xB0E8, 0x854A,
+	0xBB6B, 0xC52A, 0x4FE5, 0xED16, 0x86C5, 0x9AD7, 0x6655, 0x1194,
+	0x8ACF, 0xE910, 0x0406, 0xFE81, 0xA0F0, 0x7844, 0x25BA, 0x4BE3,
+	0xA2F3, 0x5DFE, 0x80C0, 0x058A, 0x3FAD, 0x21BC, 0x7048, 0xF104,
+	0x63DF, 0x77C1, 0xAF75, 0x4263, 0x2030, 0xE51A, 0xFD0E, 0xBF6D,
+	0x814C, 0x1814, 0x2635, 0xC32F, 0xBEE1, 0x35A2, 0x88CC, 0x2E39,
+	0x9357, 0x55F2, 0xFC82, 0x7A47, 0xC8AC, 0xBAE7, 0x322B, 0xE695,
+	0xC0A0, 0x1998, 0x9ED1, 0xA37F, 0x4466, 0x547E, 0x3BAB, 0x0B83,
+	0x8CCA, 0xC729, 0x6BD3, 0x283C, 0xA779, 0xBCE2, 0x161D, 0xAD76,
+	0xDB3B, 0x6456, 0x744E, 0x141E, 0x92DB, 0x0C0A, 0x486C, 0xB8E4,
+	0x9F5D, 0xBD6E, 0x43EF, 0xC4A6, 0x39A8, 0x31A4, 0xD337, 0xF28B,
+	0xD532, 0x8B43, 0x6E59, 0xDAB7, 0x018C, 0xB164, 0x9CD2, 0x49E0,
+	0xD8B4, 0xACFA, 0xF307, 0xCF25, 0xCAAF, 0xF48E, 0x47E9, 0x1018,
+	0x6FD5, 0xF088, 0x4A6F, 0x5C72, 0x3824, 0x57F1, 0x73C7, 0x9751,
+	0xCB23, 0xA17C, 0xE89C, 0x3E21, 0x96DD, 0x61DC, 0x0D86, 0x0F85,
+	0xE090, 0x7C42, 0x71C4, 0xCCAA, 0x90D8, 0x0605, 0xF701, 0x1C12,
+	0xC2A3, 0x6A5F, 0xAEF9, 0x69D0, 0x1791, 0x9958, 0x3A27, 0x27B9,
+	0xD938, 0xEB13, 0x2BB3, 0x2233, 0xD2BB, 0xA970, 0x0789, 0x33A7,
+	0x2DB6, 0x3C22, 0x1592, 0xC920, 0x8749, 0xAAFF, 0x5078, 0xA57A,
+	0x038F, 0x59F8, 0x0980, 0x1A17, 0x65DA, 0xD731, 0x84C6, 0xD0B8,
+	0x82C3, 0x29B0, 0x5A77, 0x1E11, 0x7BCB, 0xA8FC, 0x6DD6, 0x2C3A,
+};
+
+static inline u16 _S_(u16 v)
+{
+	u16 t = Sbox[Hi8(v)];
+	return Sbox[Lo8(v)] ^ ((t << 8) | (t >> 8));
+}
+
+#define PHASE1_LOOP_COUNT 8
+
+static void tkip_mixing_phase1(u16 * TTAK, const u8 * TK, const u8 * TA,
+			       u32 IV32)
+{
+	int i, j;
+
+	/* Initialize the 80-bit TTAK from TSC (IV32) and TA[0..5] */
+	TTAK[0] = Lo16(IV32);
+	TTAK[1] = Hi16(IV32);
+	TTAK[2] = Mk16(TA[1], TA[0]);
+	TTAK[3] = Mk16(TA[3], TA[2]);
+	TTAK[4] = Mk16(TA[5], TA[4]);
+
+	for (i = 0; i < PHASE1_LOOP_COUNT; i++) {
+		j = 2 * (i & 1);
+		TTAK[0] += _S_(TTAK[4] ^ Mk16(TK[1 + j], TK[0 + j]));
+		TTAK[1] += _S_(TTAK[0] ^ Mk16(TK[5 + j], TK[4 + j]));
+		TTAK[2] += _S_(TTAK[1] ^ Mk16(TK[9 + j], TK[8 + j]));
+		TTAK[3] += _S_(TTAK[2] ^ Mk16(TK[13 + j], TK[12 + j]));
+		TTAK[4] += _S_(TTAK[3] ^ Mk16(TK[1 + j], TK[0 + j])) + i;
+	}
+}
+
+static void tkip_mixing_phase2(u8 * WEPSeed, const u8 * TK, const u16 * TTAK,
+			       u16 IV16)
+{
+	/* Make temporary area overlap WEP seed so that the final copy can be
+	 * avoided on little endian hosts. */
+	u16 *PPK = (u16 *) & WEPSeed[4];
+
+	/* Step 1 - make copy of TTAK and bring in TSC */
+	PPK[0] = TTAK[0];
+	PPK[1] = TTAK[1];
+	PPK[2] = TTAK[2];
+	PPK[3] = TTAK[3];
+	PPK[4] = TTAK[4];
+	PPK[5] = TTAK[4] + IV16;
+
+	/* Step 2 - 96-bit bijective mixing using S-box */
+	PPK[0] += _S_(PPK[5] ^ Mk16_le((__le16 *) & TK[0]));
+	PPK[1] += _S_(PPK[0] ^ Mk16_le((__le16 *) & TK[2]));
+	PPK[2] += _S_(PPK[1] ^ Mk16_le((__le16 *) & TK[4]));
+	PPK[3] += _S_(PPK[2] ^ Mk16_le((__le16 *) & TK[6]));
+	PPK[4] += _S_(PPK[3] ^ Mk16_le((__le16 *) & TK[8]));
+	PPK[5] += _S_(PPK[4] ^ Mk16_le((__le16 *) & TK[10]));
+
+	PPK[0] += RotR1(PPK[5] ^ Mk16_le((__le16 *) & TK[12]));
+	PPK[1] += RotR1(PPK[0] ^ Mk16_le((__le16 *) & TK[14]));
+	PPK[2] += RotR1(PPK[1]);
+	PPK[3] += RotR1(PPK[2]);
+	PPK[4] += RotR1(PPK[3]);
+	PPK[5] += RotR1(PPK[4]);
+
+	/* Step 3 - bring in last of TK bits, assign 24-bit WEP IV value
+	 * WEPSeed[0..2] is transmitted as WEP IV */
+	WEPSeed[0] = Hi8(IV16);
+	WEPSeed[1] = (Hi8(IV16) | 0x20) & 0x7F;
+	WEPSeed[2] = Lo8(IV16);
+	WEPSeed[3] = Lo8((PPK[5] ^ Mk16_le((__le16 *) & TK[0])) >> 1);
+
+#ifdef __BIG_ENDIAN
+	{
+		int i;
+		for (i = 0; i < 6; i++)
+			PPK[i] = (PPK[i] << 8) | (PPK[i] >> 8);
+	}
+#endif
+}
+
+static int lib80211_tkip_hdr(struct sk_buff *skb, int hdr_len,
+			      u8 * rc4key, int keylen, void *priv)
+{
+	struct lib80211_tkip_data *tkey = priv;
+	u8 *pos;
+	struct ieee80211_hdr *hdr;
+
+	hdr = (struct ieee80211_hdr *)skb->data;
+
+	if (skb_headroom(skb) < TKIP_HDR_LEN || skb->len < hdr_len)
+		return -1;
+
+	if (rc4key == NULL || keylen < 16)
+		return -1;
+
+	if (!tkey->tx_phase1_done) {
+		tkip_mixing_phase1(tkey->tx_ttak, tkey->key, hdr->addr2,
+				   tkey->tx_iv32);
+		tkey->tx_phase1_done = 1;
+	}
+	tkip_mixing_phase2(rc4key, tkey->key, tkey->tx_ttak, tkey->tx_iv16);
+
+	pos = skb_push(skb, TKIP_HDR_LEN);
+	memmove(pos, pos + TKIP_HDR_LEN, hdr_len);
+	pos += hdr_len;
+
+	*pos++ = *rc4key;
+	*pos++ = *(rc4key + 1);
+	*pos++ = *(rc4key + 2);
+	*pos++ = (tkey->key_idx << 6) | (1 << 5) /* Ext IV included */ ;
+	*pos++ = tkey->tx_iv32 & 0xff;
+	*pos++ = (tkey->tx_iv32 >> 8) & 0xff;
+	*pos++ = (tkey->tx_iv32 >> 16) & 0xff;
+	*pos++ = (tkey->tx_iv32 >> 24) & 0xff;
+
+	tkey->tx_iv16++;
+	if (tkey->tx_iv16 == 0) {
+		tkey->tx_phase1_done = 0;
+		tkey->tx_iv32++;
+	}
+
+	return TKIP_HDR_LEN;
+}
+
+static int lib80211_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
+{
+	struct lib80211_tkip_data *tkey = priv;
+	struct blkcipher_desc desc = { .tfm = tkey->tx_tfm_arc4 };
+	int len;
+	u8 rc4key[16], *pos, *icv;
+	u32 crc;
+	struct scatterlist sg;
+
+	if (tkey->flags & IEEE80211_CRYPTO_TKIP_COUNTERMEASURES) {
+		struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+		net_dbg_ratelimited("TKIP countermeasures: dropped TX packet to %pM\n",
+				    hdr->addr1);
+		return -1;
+	}
+
+	if (skb_tailroom(skb) < 4 || skb->len < hdr_len)
+		return -1;
+
+	len = skb->len - hdr_len;
+	pos = skb->data + hdr_len;
+
+	if ((lib80211_tkip_hdr(skb, hdr_len, rc4key, 16, priv)) < 0)
+		return -1;
+
+	crc = ~crc32_le(~0, pos, len);
+	icv = skb_put(skb, 4);
+	icv[0] = crc;
+	icv[1] = crc >> 8;
+	icv[2] = crc >> 16;
+	icv[3] = crc >> 24;
+
+	crypto_blkcipher_setkey(tkey->tx_tfm_arc4, rc4key, 16);
+	sg_init_one(&sg, pos, len + 4);
+	return crypto_blkcipher_encrypt(&desc, &sg, &sg, len + 4);
+}
+
+/*
+ * deal with seq counter wrapping correctly.
+ * refer to timer_after() for jiffies wrapping handling
+ */
+static inline int tkip_replay_check(u32 iv32_n, u16 iv16_n,
+				    u32 iv32_o, u16 iv16_o)
+{
+	if ((s32)iv32_n - (s32)iv32_o < 0 ||
+	    (iv32_n == iv32_o && iv16_n <= iv16_o))
+		return 1;
+	return 0;
+}
+
+static int lib80211_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
+{
+	struct lib80211_tkip_data *tkey = priv;
+	struct blkcipher_desc desc = { .tfm = tkey->rx_tfm_arc4 };
+	u8 rc4key[16];
+	u8 keyidx, *pos;
+	u32 iv32;
+	u16 iv16;
+	struct ieee80211_hdr *hdr;
+	u8 icv[4];
+	u32 crc;
+	struct scatterlist sg;
+	int plen;
+
+	hdr = (struct ieee80211_hdr *)skb->data;
+
+	if (tkey->flags & IEEE80211_CRYPTO_TKIP_COUNTERMEASURES) {
+		net_dbg_ratelimited("TKIP countermeasures: dropped received packet from %pM\n",
+				    hdr->addr2);
+		return -1;
+	}
+
+	if (skb->len < hdr_len + TKIP_HDR_LEN + 4)
+		return -1;
+
+	pos = skb->data + hdr_len;
+	keyidx = pos[3];
+	if (!(keyidx & (1 << 5))) {
+		net_dbg_ratelimited("TKIP: received packet without ExtIV flag from %pM\n",
+				    hdr->addr2);
+		return -2;
+	}
+	keyidx >>= 6;
+	if (tkey->key_idx != keyidx) {
+		printk(KERN_DEBUG "TKIP: RX tkey->key_idx=%d frame "
+		       "keyidx=%d priv=%p\n", tkey->key_idx, keyidx, priv);
+		return -6;
+	}
+	if (!tkey->key_set) {
+		net_dbg_ratelimited("TKIP: received packet from %pM with keyid=%d that does not have a configured key\n",
+				    hdr->addr2, keyidx);
+		return -3;
+	}
+	iv16 = (pos[0] << 8) | pos[2];
+	iv32 = pos[4] | (pos[5] << 8) | (pos[6] << 16) | (pos[7] << 24);
+	pos += TKIP_HDR_LEN;
+
+	if (tkip_replay_check(iv32, iv16, tkey->rx_iv32, tkey->rx_iv16)) {
+#ifdef CONFIG_LIB80211_DEBUG
+		net_dbg_ratelimited("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;
+	}
+
+	if (iv32 != tkey->rx_iv32 || !tkey->rx_phase1_done) {
+		tkip_mixing_phase1(tkey->rx_ttak, tkey->key, hdr->addr2, iv32);
+		tkey->rx_phase1_done = 1;
+	}
+	tkip_mixing_phase2(rc4key, tkey->key, tkey->rx_ttak, iv16);
+
+	plen = skb->len - hdr_len - 12;
+
+	crypto_blkcipher_setkey(tkey->rx_tfm_arc4, rc4key, 16);
+	sg_init_one(&sg, pos, plen + 4);
+	if (crypto_blkcipher_decrypt(&desc, &sg, &sg, plen + 4)) {
+		net_dbg_ratelimited("TKIP: failed to decrypt received packet from %pM\n",
+				    hdr->addr2);
+		return -7;
+	}
+
+	crc = ~crc32_le(~0, pos, plen);
+	icv[0] = crc;
+	icv[1] = crc >> 8;
+	icv[2] = crc >> 16;
+	icv[3] = crc >> 24;
+	if (memcmp(icv, pos + plen, 4) != 0) {
+		if (iv32 != tkey->rx_iv32) {
+			/* Previously cached Phase1 result was already lost, so
+			 * it needs to be recalculated for the next packet. */
+			tkey->rx_phase1_done = 0;
+		}
+#ifdef CONFIG_LIB80211_DEBUG
+		net_dbg_ratelimited("TKIP: ICV error detected: STA=%pM\n",
+				    hdr->addr2);
+#endif
+		tkey->dot11RSNAStatsTKIPICVErrors++;
+		return -5;
+	}
+
+	/* Update real counters only after Michael MIC verification has
+	 * completed */
+	tkey->rx_iv32_new = iv32;
+	tkey->rx_iv16_new = iv16;
+
+	/* Remove IV and ICV */
+	memmove(skb->data + TKIP_HDR_LEN, skb->data, hdr_len);
+	skb_pull(skb, TKIP_HDR_LEN);
+	skb_trim(skb, skb->len - 4);
+
+	return keyidx;
+}
+
+static int michael_mic(struct crypto_hash *tfm_michael, u8 * key, u8 * hdr,
+		       u8 * data, size_t data_len, u8 * mic)
+{
+	struct hash_desc desc;
+	struct scatterlist sg[2];
+
+	if (tfm_michael == NULL) {
+		pr_warn("%s(): tfm_michael == NULL\n", __func__);
+		return -1;
+	}
+	sg_init_table(sg, 2);
+	sg_set_buf(&sg[0], hdr, 16);
+	sg_set_buf(&sg[1], data, data_len);
+
+	if (crypto_hash_setkey(tfm_michael, key, 8))
+		return -1;
+
+	desc.tfm = tfm_michael;
+	desc.flags = 0;
+	return crypto_hash_digest(&desc, sg, data_len + 16, mic);
+}
+
+static void michael_mic_hdr(struct sk_buff *skb, u8 * hdr)
+{
+	struct ieee80211_hdr *hdr11;
+
+	hdr11 = (struct ieee80211_hdr *)skb->data;
+
+	switch (le16_to_cpu(hdr11->frame_control) &
+		(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
+	case IEEE80211_FCTL_TODS:
+		memcpy(hdr, hdr11->addr3, ETH_ALEN);	/* DA */
+		memcpy(hdr + ETH_ALEN, hdr11->addr2, ETH_ALEN);	/* SA */
+		break;
+	case IEEE80211_FCTL_FROMDS:
+		memcpy(hdr, hdr11->addr1, ETH_ALEN);	/* DA */
+		memcpy(hdr + ETH_ALEN, hdr11->addr3, ETH_ALEN);	/* SA */
+		break;
+	case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS:
+		memcpy(hdr, hdr11->addr3, ETH_ALEN);	/* DA */
+		memcpy(hdr + ETH_ALEN, hdr11->addr4, ETH_ALEN);	/* SA */
+		break;
+	case 0:
+		memcpy(hdr, hdr11->addr1, ETH_ALEN);	/* DA */
+		memcpy(hdr + ETH_ALEN, hdr11->addr2, ETH_ALEN);	/* SA */
+		break;
+	}
+
+	if (ieee80211_is_data_qos(hdr11->frame_control)) {
+		hdr[12] = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(hdr11)))
+			& IEEE80211_QOS_CTL_TID_MASK;
+	} else
+		hdr[12] = 0;		/* priority */
+
+	hdr[13] = hdr[14] = hdr[15] = 0;	/* reserved */
+}
+
+static int lib80211_michael_mic_add(struct sk_buff *skb, int hdr_len,
+				     void *priv)
+{
+	struct lib80211_tkip_data *tkey = priv;
+	u8 *pos;
+
+	if (skb_tailroom(skb) < 8 || skb->len < hdr_len) {
+		printk(KERN_DEBUG "Invalid packet for Michael MIC add "
+		       "(tailroom=%d hdr_len=%d skb->len=%d)\n",
+		       skb_tailroom(skb), hdr_len, skb->len);
+		return -1;
+	}
+
+	michael_mic_hdr(skb, tkey->tx_hdr);
+	pos = skb_put(skb, 8);
+	if (michael_mic(tkey->tx_tfm_michael, &tkey->key[16], tkey->tx_hdr,
+			skb->data + hdr_len, skb->len - 8 - hdr_len, pos))
+		return -1;
+
+	return 0;
+}
+
+static void lib80211_michael_mic_failure(struct net_device *dev,
+					  struct ieee80211_hdr *hdr,
+					  int keyidx)
+{
+	union iwreq_data wrqu;
+	struct iw_michaelmicfailure ev;
+
+	/* TODO: needed parameters: count, keyid, key type, TSC */
+	memset(&ev, 0, sizeof(ev));
+	ev.flags = keyidx & IW_MICFAILURE_KEY_ID;
+	if (hdr->addr1[0] & 0x01)
+		ev.flags |= IW_MICFAILURE_GROUP;
+	else
+		ev.flags |= IW_MICFAILURE_PAIRWISE;
+	ev.src_addr.sa_family = ARPHRD_ETHER;
+	memcpy(ev.src_addr.sa_data, hdr->addr2, ETH_ALEN);
+	memset(&wrqu, 0, sizeof(wrqu));
+	wrqu.data.length = sizeof(ev);
+	wireless_send_event(dev, IWEVMICHAELMICFAILURE, &wrqu, (char *)&ev);
+}
+
+static int lib80211_michael_mic_verify(struct sk_buff *skb, int keyidx,
+					int hdr_len, void *priv)
+{
+	struct lib80211_tkip_data *tkey = priv;
+	u8 mic[8];
+
+	if (!tkey->key_set)
+		return -1;
+
+	michael_mic_hdr(skb, tkey->rx_hdr);
+	if (michael_mic(tkey->rx_tfm_michael, &tkey->key[24], tkey->rx_hdr,
+			skb->data + hdr_len, skb->len - 8 - hdr_len, mic))
+		return -1;
+	if (memcmp(mic, skb->data + skb->len - 8, 8) != 0) {
+		struct ieee80211_hdr *hdr;
+		hdr = (struct ieee80211_hdr *)skb->data;
+		printk(KERN_DEBUG "%s: Michael MIC verification failed for "
+		       "MSDU from %pM keyidx=%d\n",
+		       skb->dev ? skb->dev->name : "N/A", hdr->addr2,
+		       keyidx);
+		if (skb->dev)
+			lib80211_michael_mic_failure(skb->dev, hdr, keyidx);
+		tkey->dot11RSNAStatsTKIPLocalMICFailures++;
+		return -1;
+	}
+
+	/* Update TSC counters for RX now that the packet verification has
+	 * completed. */
+	tkey->rx_iv32 = tkey->rx_iv32_new;
+	tkey->rx_iv16 = tkey->rx_iv16_new;
+
+	skb_trim(skb, skb->len - 8);
+
+	return 0;
+}
+
+static int lib80211_tkip_set_key(void *key, int len, u8 * seq, void *priv)
+{
+	struct lib80211_tkip_data *tkey = priv;
+	int keyidx;
+	struct crypto_hash *tfm = tkey->tx_tfm_michael;
+	struct crypto_blkcipher *tfm2 = tkey->tx_tfm_arc4;
+	struct crypto_hash *tfm3 = tkey->rx_tfm_michael;
+	struct crypto_blkcipher *tfm4 = tkey->rx_tfm_arc4;
+
+	keyidx = tkey->key_idx;
+	memset(tkey, 0, sizeof(*tkey));
+	tkey->key_idx = keyidx;
+	tkey->tx_tfm_michael = tfm;
+	tkey->tx_tfm_arc4 = tfm2;
+	tkey->rx_tfm_michael = tfm3;
+	tkey->rx_tfm_arc4 = tfm4;
+	if (len == TKIP_KEY_LEN) {
+		memcpy(tkey->key, key, TKIP_KEY_LEN);
+		tkey->key_set = 1;
+		tkey->tx_iv16 = 1;	/* TSC is initialized to 1 */
+		if (seq) {
+			tkey->rx_iv32 = (seq[5] << 24) | (seq[4] << 16) |
+			    (seq[3] << 8) | seq[2];
+			tkey->rx_iv16 = (seq[1] << 8) | seq[0];
+		}
+	} else if (len == 0)
+		tkey->key_set = 0;
+	else
+		return -1;
+
+	return 0;
+}
+
+static int lib80211_tkip_get_key(void *key, int len, u8 * seq, void *priv)
+{
+	struct lib80211_tkip_data *tkey = priv;
+
+	if (len < TKIP_KEY_LEN)
+		return -1;
+
+	if (!tkey->key_set)
+		return 0;
+	memcpy(key, tkey->key, TKIP_KEY_LEN);
+
+	if (seq) {
+		/* Return the sequence number of the last transmitted frame. */
+		u16 iv16 = tkey->tx_iv16;
+		u32 iv32 = tkey->tx_iv32;
+		if (iv16 == 0)
+			iv32--;
+		iv16--;
+		seq[0] = tkey->tx_iv16;
+		seq[1] = tkey->tx_iv16 >> 8;
+		seq[2] = tkey->tx_iv32;
+		seq[3] = tkey->tx_iv32 >> 8;
+		seq[4] = tkey->tx_iv32 >> 16;
+		seq[5] = tkey->tx_iv32 >> 24;
+	}
+
+	return TKIP_KEY_LEN;
+}
+
+static void lib80211_tkip_print_stats(struct seq_file *m, void *priv)
+{
+	struct lib80211_tkip_data *tkip = priv;
+	seq_printf(m,
+		   "key[%d] alg=TKIP key_set=%d "
+		   "tx_pn=%02x%02x%02x%02x%02x%02x "
+		   "rx_pn=%02x%02x%02x%02x%02x%02x "
+		   "replays=%d icv_errors=%d local_mic_failures=%d\n",
+		   tkip->key_idx, tkip->key_set,
+		   (tkip->tx_iv32 >> 24) & 0xff,
+		   (tkip->tx_iv32 >> 16) & 0xff,
+		   (tkip->tx_iv32 >> 8) & 0xff,
+		   tkip->tx_iv32 & 0xff,
+		   (tkip->tx_iv16 >> 8) & 0xff,
+		   tkip->tx_iv16 & 0xff,
+		   (tkip->rx_iv32 >> 24) & 0xff,
+		   (tkip->rx_iv32 >> 16) & 0xff,
+		   (tkip->rx_iv32 >> 8) & 0xff,
+		   tkip->rx_iv32 & 0xff,
+		   (tkip->rx_iv16 >> 8) & 0xff,
+		   tkip->rx_iv16 & 0xff,
+		   tkip->dot11RSNAStatsTKIPReplays,
+		   tkip->dot11RSNAStatsTKIPICVErrors,
+		   tkip->dot11RSNAStatsTKIPLocalMICFailures);
+}
+
+static struct lib80211_crypto_ops lib80211_crypt_tkip = {
+	.name = "TKIP",
+	.init = lib80211_tkip_init,
+	.deinit = lib80211_tkip_deinit,
+	.encrypt_mpdu = lib80211_tkip_encrypt,
+	.decrypt_mpdu = lib80211_tkip_decrypt,
+	.encrypt_msdu = lib80211_michael_mic_add,
+	.decrypt_msdu = lib80211_michael_mic_verify,
+	.set_key = lib80211_tkip_set_key,
+	.get_key = lib80211_tkip_get_key,
+	.print_stats = lib80211_tkip_print_stats,
+	.extra_mpdu_prefix_len = 4 + 4,	/* IV + ExtIV */
+	.extra_mpdu_postfix_len = 4,	/* ICV */
+	.extra_msdu_postfix_len = 8,	/* MIC */
+	.get_flags = lib80211_tkip_get_flags,
+	.set_flags = lib80211_tkip_set_flags,
+	.owner = THIS_MODULE,
+};
+
+static int __init lib80211_crypto_tkip_init(void)
+{
+	return lib80211_register_crypto_ops(&lib80211_crypt_tkip);
+}
+
+static void __exit lib80211_crypto_tkip_exit(void)
+{
+	lib80211_unregister_crypto_ops(&lib80211_crypt_tkip);
+}
+
+module_init(lib80211_crypto_tkip_init);
+module_exit(lib80211_crypto_tkip_exit);

net/wireless/lib80211_crypt_wep.c

@@ -0,0 +1,289 @@
+/*
+ * lib80211 crypt: host-based WEP encryption implementation for lib80211
+ *
+ * Copyright (c) 2002-2004, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2008, John W. Linville <linville@tuxdriver.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation. See README and COPYING for
+ * more details.
+ */
+
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/random.h>
+#include <linux/scatterlist.h>
+#include <linux/skbuff.h>
+#include <linux/mm.h>
+#include <asm/string.h>
+
+#include <net/lib80211.h>
+
+#include <linux/crypto.h>
+#include <linux/crc32.h>
+
+MODULE_AUTHOR("Jouni Malinen");
+MODULE_DESCRIPTION("lib80211 crypt: WEP");
+MODULE_LICENSE("GPL");
+
+struct lib80211_wep_data {
+	u32 iv;
+#define WEP_KEY_LEN 13
+	u8 key[WEP_KEY_LEN + 1];
+	u8 key_len;
+	u8 key_idx;
+	struct crypto_blkcipher *tx_tfm;
+	struct crypto_blkcipher *rx_tfm;
+};
+
+static void *lib80211_wep_init(int keyidx)
+{
+	struct lib80211_wep_data *priv;
+
+	priv = kzalloc(sizeof(*priv), GFP_ATOMIC);
+	if (priv == NULL)
+		goto fail;
+	priv->key_idx = keyidx;
+
+	priv->tx_tfm = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
+	if (IS_ERR(priv->tx_tfm)) {
+		priv->tx_tfm = NULL;
+		goto fail;
+	}
+
+	priv->rx_tfm = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
+	if (IS_ERR(priv->rx_tfm)) {
+		priv->rx_tfm = NULL;
+		goto fail;
+	}
+	/* start WEP IV from a random value */
+	get_random_bytes(&priv->iv, 4);
+
+	return priv;
+
+      fail:
+	if (priv) {
+		if (priv->tx_tfm)
+			crypto_free_blkcipher(priv->tx_tfm);
+		if (priv->rx_tfm)
+			crypto_free_blkcipher(priv->rx_tfm);
+		kfree(priv);
+	}
+	return NULL;
+}
+
+static void lib80211_wep_deinit(void *priv)
+{
+	struct lib80211_wep_data *_priv = priv;
+	if (_priv) {
+		if (_priv->tx_tfm)
+			crypto_free_blkcipher(_priv->tx_tfm);
+		if (_priv->rx_tfm)
+			crypto_free_blkcipher(_priv->rx_tfm);
+	}
+	kfree(priv);
+}
+
+/* Add WEP IV/key info to a frame that has at least 4 bytes of headroom */
+static int lib80211_wep_build_iv(struct sk_buff *skb, int hdr_len,
+			       u8 *key, int keylen, void *priv)
+{
+	struct lib80211_wep_data *wep = priv;
+	u32 klen;
+	u8 *pos;
+
+	if (skb_headroom(skb) < 4 || skb->len < hdr_len)
+		return -1;
+
+	pos = skb_push(skb, 4);
+	memmove(pos, pos + 4, hdr_len);
+	pos += hdr_len;
+
+	klen = 3 + wep->key_len;
+
+	wep->iv++;
+
+	/* Fluhrer, Mantin, and Shamir have reported weaknesses in the key
+	 * scheduling algorithm of RC4. At least IVs (KeyByte + 3, 0xff, N)
+	 * can be used to speedup attacks, so avoid using them. */
+	if ((wep->iv & 0xff00) == 0xff00) {
+		u8 B = (wep->iv >> 16) & 0xff;
+		if (B >= 3 && B < klen)
+			wep->iv += 0x0100;
+	}
+
+	/* Prepend 24-bit IV to RC4 key and TX frame */
+	*pos++ = (wep->iv >> 16) & 0xff;
+	*pos++ = (wep->iv >> 8) & 0xff;
+	*pos++ = wep->iv & 0xff;
+	*pos++ = wep->key_idx << 6;
+
+	return 0;
+}
+
+/* Perform WEP encryption on given skb that has at least 4 bytes of headroom
+ * for IV and 4 bytes of tailroom for ICV. Both IV and ICV will be transmitted,
+ * so the payload length increases with 8 bytes.
+ *
+ * WEP frame payload: IV + TX key idx, RC4(data), ICV = RC4(CRC32(data))
+ */
+static int lib80211_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
+{
+	struct lib80211_wep_data *wep = priv;
+	struct blkcipher_desc desc = { .tfm = wep->tx_tfm };
+	u32 crc, klen, len;
+	u8 *pos, *icv;
+	struct scatterlist sg;
+	u8 key[WEP_KEY_LEN + 3];
+
+	/* other checks are in lib80211_wep_build_iv */
+	if (skb_tailroom(skb) < 4)
+		return -1;
+
+	/* add the IV to the frame */
+	if (lib80211_wep_build_iv(skb, hdr_len, NULL, 0, priv))
+		return -1;
+
+	/* Copy the IV into the first 3 bytes of the key */
+	skb_copy_from_linear_data_offset(skb, hdr_len, key, 3);
+
+	/* Copy rest of the WEP key (the secret part) */
+	memcpy(key + 3, wep->key, wep->key_len);
+
+	len = skb->len - hdr_len - 4;
+	pos = skb->data + hdr_len + 4;
+	klen = 3 + wep->key_len;
+
+	/* Append little-endian CRC32 over only the data and encrypt it to produce ICV */
+	crc = ~crc32_le(~0, pos, len);
+	icv = skb_put(skb, 4);
+	icv[0] = crc;
+	icv[1] = crc >> 8;
+	icv[2] = crc >> 16;
+	icv[3] = crc >> 24;
+
+	crypto_blkcipher_setkey(wep->tx_tfm, key, klen);
+	sg_init_one(&sg, pos, len + 4);
+	return crypto_blkcipher_encrypt(&desc, &sg, &sg, len + 4);
+}
+
+/* Perform WEP decryption on given buffer. Buffer includes whole WEP part of
+ * the frame: IV (4 bytes), encrypted payload (including SNAP header),
+ * ICV (4 bytes). len includes both IV and ICV.
+ *
+ * Returns 0 if frame was decrypted successfully and ICV was correct and -1 on
+ * failure. If frame is OK, IV and ICV will be removed.
+ */
+static int lib80211_wep_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
+{
+	struct lib80211_wep_data *wep = priv;
+	struct blkcipher_desc desc = { .tfm = wep->rx_tfm };
+	u32 crc, klen, plen;
+	u8 key[WEP_KEY_LEN + 3];
+	u8 keyidx, *pos, icv[4];
+	struct scatterlist sg;
+
+	if (skb->len < hdr_len + 8)
+		return -1;
+
+	pos = skb->data + hdr_len;
+	key[0] = *pos++;
+	key[1] = *pos++;
+	key[2] = *pos++;
+	keyidx = *pos++ >> 6;
+	if (keyidx != wep->key_idx)
+		return -1;
+
+	klen = 3 + wep->key_len;
+
+	/* Copy rest of the WEP key (the secret part) */
+	memcpy(key + 3, wep->key, wep->key_len);
+
+	/* Apply RC4 to data and compute CRC32 over decrypted data */
+	plen = skb->len - hdr_len - 8;
+
+	crypto_blkcipher_setkey(wep->rx_tfm, key, klen);
+	sg_init_one(&sg, pos, plen + 4);
+	if (crypto_blkcipher_decrypt(&desc, &sg, &sg, plen + 4))
+		return -7;
+
+	crc = ~crc32_le(~0, pos, plen);
+	icv[0] = crc;
+	icv[1] = crc >> 8;
+	icv[2] = crc >> 16;
+	icv[3] = crc >> 24;
+	if (memcmp(icv, pos + plen, 4) != 0) {
+		/* ICV mismatch - drop frame */
+		return -2;
+	}
+
+	/* Remove IV and ICV */
+	memmove(skb->data + 4, skb->data, hdr_len);
+	skb_pull(skb, 4);
+	skb_trim(skb, skb->len - 4);
+
+	return 0;
+}
+
+static int lib80211_wep_set_key(void *key, int len, u8 * seq, void *priv)
+{
+	struct lib80211_wep_data *wep = priv;
+
+	if (len < 0 || len > WEP_KEY_LEN)
+		return -1;
+
+	memcpy(wep->key, key, len);
+	wep->key_len = len;
+
+	return 0;
+}
+
+static int lib80211_wep_get_key(void *key, int len, u8 * seq, void *priv)
+{
+	struct lib80211_wep_data *wep = priv;
+
+	if (len < wep->key_len)
+		return -1;
+
+	memcpy(key, wep->key, wep->key_len);
+
+	return wep->key_len;
+}
+
+static void lib80211_wep_print_stats(struct seq_file *m, void *priv)
+{
+	struct lib80211_wep_data *wep = priv;
+	seq_printf(m, "key[%d] alg=WEP len=%d\n", wep->key_idx, wep->key_len);
+}
+
+static struct lib80211_crypto_ops lib80211_crypt_wep = {
+	.name = "WEP",
+	.init = lib80211_wep_init,
+	.deinit = lib80211_wep_deinit,
+	.encrypt_mpdu = lib80211_wep_encrypt,
+	.decrypt_mpdu = lib80211_wep_decrypt,
+	.encrypt_msdu = NULL,
+	.decrypt_msdu = NULL,
+	.set_key = lib80211_wep_set_key,
+	.get_key = lib80211_wep_get_key,
+	.print_stats = lib80211_wep_print_stats,
+	.extra_mpdu_prefix_len = 4,	/* IV */
+	.extra_mpdu_postfix_len = 4,	/* ICV */
+	.owner = THIS_MODULE,
+};
+
+static int __init lib80211_crypto_wep_init(void)
+{
+	return lib80211_register_crypto_ops(&lib80211_crypt_wep);
+}
+
+static void __exit lib80211_crypto_wep_exit(void)
+{
+	lib80211_unregister_crypto_ops(&lib80211_crypt_wep);
+}
+
+module_init(lib80211_crypto_wep_init);
+module_exit(lib80211_crypto_wep_exit);

net/wireless/mesh.c

@@ -0,0 +1,279 @@
+#include <linux/ieee80211.h>
+#include <linux/export.h>
+#include <net/cfg80211.h>
+#include "nl80211.h"
+#include "core.h"
+#include "rdev-ops.h"
+
+/* Default values, timeouts in ms */
+#define MESH_TTL 		31
+#define MESH_DEFAULT_ELEMENT_TTL 31
+#define MESH_MAX_RETR	 	3
+#define MESH_RET_T 		100
+#define MESH_CONF_T 		100
+#define MESH_HOLD_T 		100
+
+#define MESH_PATH_TIMEOUT	5000
+#define MESH_RANN_INTERVAL      5000
+#define MESH_PATH_TO_ROOT_TIMEOUT      6000
+#define MESH_ROOT_INTERVAL     5000
+#define MESH_ROOT_CONFIRMATION_INTERVAL 2000
+#define MESH_DEFAULT_PLINK_TIMEOUT	1800 /* timeout in seconds */
+
+/*
+ * Minimum interval between two consecutive PREQs originated by the same
+ * interface
+ */
+#define MESH_PREQ_MIN_INT	10
+#define MESH_PERR_MIN_INT	100
+#define MESH_DIAM_TRAVERSAL_TIME 50
+
+#define MESH_RSSI_THRESHOLD	0
+
+/*
+ * A path will be refreshed if it is used PATH_REFRESH_TIME milliseconds
+ * before timing out.  This way it will remain ACTIVE and no data frames
+ * will be unnecessarily held in the pending queue.
+ */
+#define MESH_PATH_REFRESH_TIME			1000
+#define MESH_MIN_DISCOVERY_TIMEOUT (2 * MESH_DIAM_TRAVERSAL_TIME)
+
+/* Default maximum number of established plinks per interface */
+#define MESH_MAX_ESTAB_PLINKS	32
+
+#define MESH_MAX_PREQ_RETRIES	4
+
+#define MESH_SYNC_NEIGHBOR_OFFSET_MAX 50
+
+#define MESH_DEFAULT_BEACON_INTERVAL	1000	/* in 1024 us units (=TUs) */
+#define MESH_DEFAULT_DTIM_PERIOD	2
+#define MESH_DEFAULT_AWAKE_WINDOW	10	/* in 1024 us units (=TUs) */
+
+const struct mesh_config default_mesh_config = {
+	.dot11MeshRetryTimeout = MESH_RET_T,
+	.dot11MeshConfirmTimeout = MESH_CONF_T,
+	.dot11MeshHoldingTimeout = MESH_HOLD_T,
+	.dot11MeshMaxRetries = MESH_MAX_RETR,
+	.dot11MeshTTL = MESH_TTL,
+	.element_ttl = MESH_DEFAULT_ELEMENT_TTL,
+	.auto_open_plinks = true,
+	.dot11MeshMaxPeerLinks = MESH_MAX_ESTAB_PLINKS,
+	.dot11MeshNbrOffsetMaxNeighbor = MESH_SYNC_NEIGHBOR_OFFSET_MAX,
+	.dot11MeshHWMPactivePathTimeout = MESH_PATH_TIMEOUT,
+	.dot11MeshHWMPpreqMinInterval = MESH_PREQ_MIN_INT,
+	.dot11MeshHWMPperrMinInterval = MESH_PERR_MIN_INT,
+	.dot11MeshHWMPnetDiameterTraversalTime = MESH_DIAM_TRAVERSAL_TIME,
+	.dot11MeshHWMPmaxPREQretries = MESH_MAX_PREQ_RETRIES,
+	.path_refresh_time = MESH_PATH_REFRESH_TIME,
+	.min_discovery_timeout = MESH_MIN_DISCOVERY_TIMEOUT,
+	.dot11MeshHWMPRannInterval = MESH_RANN_INTERVAL,
+	.dot11MeshGateAnnouncementProtocol = false,
+	.dot11MeshForwarding = true,
+	.rssi_threshold = MESH_RSSI_THRESHOLD,
+	.ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED,
+	.dot11MeshHWMPactivePathToRootTimeout = MESH_PATH_TO_ROOT_TIMEOUT,
+	.dot11MeshHWMProotInterval = MESH_ROOT_INTERVAL,
+	.dot11MeshHWMPconfirmationInterval = MESH_ROOT_CONFIRMATION_INTERVAL,
+	.power_mode = NL80211_MESH_POWER_ACTIVE,
+	.dot11MeshAwakeWindowDuration = MESH_DEFAULT_AWAKE_WINDOW,
+	.plink_timeout = MESH_DEFAULT_PLINK_TIMEOUT,
+};
+
+const struct mesh_setup default_mesh_setup = {
+	/* cfg80211_join_mesh() will pick a channel if needed */
+	.sync_method = IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET,
+	.path_sel_proto = IEEE80211_PATH_PROTOCOL_HWMP,
+	.path_metric = IEEE80211_PATH_METRIC_AIRTIME,
+	.auth_id = 0, /* open */
+	.ie = NULL,
+	.ie_len = 0,
+	.is_secure = false,
+	.user_mpm = false,
+	.beacon_interval = MESH_DEFAULT_BEACON_INTERVAL,
+	.dtim_period = MESH_DEFAULT_DTIM_PERIOD,
+};
+
+int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
+			 struct net_device *dev,
+			 struct mesh_setup *setup,
+			 const struct mesh_config *conf)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	int err;
+
+	BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != IEEE80211_MAX_MESH_ID_LEN);
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
+		return -EOPNOTSUPP;
+
+	if (!(rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
+	      setup->is_secure)
+		return -EOPNOTSUPP;
+
+	if (wdev->mesh_id_len)
+		return -EALREADY;
+
+	if (!setup->mesh_id_len)
+		return -EINVAL;
+
+	if (!rdev->ops->join_mesh)
+		return -EOPNOTSUPP;
+
+	if (!setup->chandef.chan) {
+		/* if no channel explicitly given, use preset channel */
+		setup->chandef = wdev->preset_chandef;
+	}
+
+	if (!setup->chandef.chan) {
+		/* if we don't have that either, use the first usable channel */
+		enum ieee80211_band band;
+
+		for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+			struct ieee80211_supported_band *sband;
+			struct ieee80211_channel *chan;
+			int i;
+
+			sband = rdev->wiphy.bands[band];
+			if (!sband)
+				continue;
+
+			for (i = 0; i < sband->n_channels; i++) {
+				chan = &sband->channels[i];
+				if (chan->flags & (IEEE80211_CHAN_NO_IR |
+						   IEEE80211_CHAN_DISABLED |
+						   IEEE80211_CHAN_RADAR))
+					continue;
+				setup->chandef.chan = chan;
+				break;
+			}
+
+			if (setup->chandef.chan)
+				break;
+		}
+
+		/* no usable channel ... */
+		if (!setup->chandef.chan)
+			return -EINVAL;
+
+		setup->chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
+		setup->chandef.center_freq1 = setup->chandef.chan->center_freq;
+	}
+
+	/*
+	 * check if basic rates are available otherwise use mandatory rates as
+	 * basic rates
+	 */
+	if (!setup->basic_rates) {
+		enum nl80211_bss_scan_width scan_width;
+		struct ieee80211_supported_band *sband =
+				rdev->wiphy.bands[setup->chandef.chan->band];
+		scan_width = cfg80211_chandef_to_scan_width(&setup->chandef);
+		setup->basic_rates = ieee80211_mandatory_rates(sband,
+							       scan_width);
+	}
+
+	if (!cfg80211_reg_can_beacon(&rdev->wiphy, &setup->chandef,
+				     NL80211_IFTYPE_MESH_POINT))
+		return -EINVAL;
+
+	err = rdev_join_mesh(rdev, dev, conf, setup);
+	if (!err) {
+		memcpy(wdev->ssid, setup->mesh_id, setup->mesh_id_len);
+		wdev->mesh_id_len = setup->mesh_id_len;
+		wdev->chandef = setup->chandef;
+	}
+
+	return err;
+}
+
+int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
+		       struct net_device *dev,
+		       struct mesh_setup *setup,
+		       const struct mesh_config *conf)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	int err;
+
+	wdev_lock(wdev);
+	err = __cfg80211_join_mesh(rdev, dev, setup, conf);
+	wdev_unlock(wdev);
+
+	return err;
+}
+
+int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
+			      struct wireless_dev *wdev,
+			      struct cfg80211_chan_def *chandef)
+{
+	int err;
+
+	/*
+	 * Workaround for libertas (only!), it puts the interface
+	 * into mesh mode but doesn't implement join_mesh. Instead,
+	 * it is configured via sysfs and then joins the mesh when
+	 * you set the channel. Note that the libertas mesh isn't
+	 * compatible with 802.11 mesh.
+	 */
+	if (rdev->ops->libertas_set_mesh_channel) {
+		if (chandef->width != NL80211_CHAN_WIDTH_20_NOHT)
+			return -EINVAL;
+
+		if (!netif_running(wdev->netdev))
+			return -ENETDOWN;
+
+		err = rdev_libertas_set_mesh_channel(rdev, wdev->netdev,
+						     chandef->chan);
+		if (!err)
+			wdev->chandef = *chandef;
+
+		return err;
+	}
+
+	if (wdev->mesh_id_len)
+		return -EBUSY;
+
+	wdev->preset_chandef = *chandef;
+	return 0;
+}
+
+int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
+			  struct net_device *dev)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	int err;
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
+		return -EOPNOTSUPP;
+
+	if (!rdev->ops->leave_mesh)
+		return -EOPNOTSUPP;
+
+	if (!wdev->mesh_id_len)
+		return -ENOTCONN;
+
+	err = rdev_leave_mesh(rdev, dev);
+	if (!err) {
+		wdev->mesh_id_len = 0;
+		memset(&wdev->chandef, 0, sizeof(wdev->chandef));
+		rdev_set_qos_map(rdev, dev, NULL);
+	}
+
+	return err;
+}
+
+int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
+			struct net_device *dev)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	int err;
+
+	wdev_lock(wdev);
+	err = __cfg80211_leave_mesh(rdev, dev);
+	wdev_unlock(wdev);
+
+	return err;
+}

net/wireless/mlme.c

@@ -0,0 +1,783 @@
+/*
+ * cfg80211 MLME SAP interface
+ *
+ * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/etherdevice.h>
+#include <linux/netdevice.h>
+#include <linux/nl80211.h>
+#include <linux/slab.h>
+#include <linux/wireless.h>
+#include <net/cfg80211.h>
+#include <net/iw_handler.h>
+#include "core.h"
+#include "nl80211.h"
+#include "rdev-ops.h"
+
+
+void cfg80211_rx_assoc_resp(struct net_device *dev, struct cfg80211_bss *bss,
+			    const u8 *buf, size_t len, int uapsd_queues)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct wiphy *wiphy = wdev->wiphy;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
+	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
+	u8 *ie = mgmt->u.assoc_resp.variable;
+	int ieoffs = offsetof(struct ieee80211_mgmt, u.assoc_resp.variable);
+	u16 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
+
+	trace_cfg80211_send_rx_assoc(dev, bss);
+
+	/*
+	 * This is a bit of a hack, we don't notify userspace of
+	 * a (re-)association reply if we tried to send a reassoc
+	 * and got a reject -- we only try again with an assoc
+	 * frame instead of reassoc.
+	 */
+	if (cfg80211_sme_rx_assoc_resp(wdev, status_code)) {
+		cfg80211_unhold_bss(bss_from_pub(bss));
+		cfg80211_put_bss(wiphy, bss);
+		return;
+	}
+
+	nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL, uapsd_queues);
+	/* update current_bss etc., consumes the bss reference */
+	__cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, ie, len - ieoffs,
+				  status_code,
+				  status_code == WLAN_STATUS_SUCCESS, bss);
+}
+EXPORT_SYMBOL(cfg80211_rx_assoc_resp);
+
+static void cfg80211_process_auth(struct wireless_dev *wdev,
+				  const u8 *buf, size_t len)
+{
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+
+	nl80211_send_rx_auth(rdev, wdev->netdev, buf, len, GFP_KERNEL);
+	cfg80211_sme_rx_auth(wdev, buf, len);
+}
+
+static void cfg80211_process_deauth(struct wireless_dev *wdev,
+				    const u8 *buf, size_t len)
+{
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
+	const u8 *bssid = mgmt->bssid;
+	u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
+	bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr);
+
+	nl80211_send_deauth(rdev, wdev->netdev, buf, len, GFP_KERNEL);
+
+	if (!wdev->current_bss ||
+	    !ether_addr_equal(wdev->current_bss->pub.bssid, bssid))
+		return;
+
+	__cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap);
+	cfg80211_sme_deauth(wdev);
+}
+
+static void cfg80211_process_disassoc(struct wireless_dev *wdev,
+				      const u8 *buf, size_t len)
+{
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
+	const u8 *bssid = mgmt->bssid;
+	u16 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
+	bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr);
+
+	nl80211_send_disassoc(rdev, wdev->netdev, buf, len, GFP_KERNEL);
+
+	if (WARN_ON(!wdev->current_bss ||
+		    !ether_addr_equal(wdev->current_bss->pub.bssid, bssid)))
+		return;
+
+	__cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap);
+	cfg80211_sme_disassoc(wdev);
+}
+
+void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct ieee80211_mgmt *mgmt = (void *)buf;
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	trace_cfg80211_rx_mlme_mgmt(dev, buf, len);
+
+	if (WARN_ON(len < 2))
+		return;
+
+	if (ieee80211_is_auth(mgmt->frame_control))
+		cfg80211_process_auth(wdev, buf, len);
+	else if (ieee80211_is_deauth(mgmt->frame_control))
+		cfg80211_process_deauth(wdev, buf, len);
+	else if (ieee80211_is_disassoc(mgmt->frame_control))
+		cfg80211_process_disassoc(wdev, buf, len);
+}
+EXPORT_SYMBOL(cfg80211_rx_mlme_mgmt);
+
+void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct wiphy *wiphy = wdev->wiphy;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
+
+	trace_cfg80211_send_auth_timeout(dev, addr);
+
+	nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL);
+	cfg80211_sme_auth_timeout(wdev);
+}
+EXPORT_SYMBOL(cfg80211_auth_timeout);
+
+void cfg80211_assoc_timeout(struct net_device *dev, struct cfg80211_bss *bss)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct wiphy *wiphy = wdev->wiphy;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
+
+	trace_cfg80211_send_assoc_timeout(dev, bss->bssid);
+
+	nl80211_send_assoc_timeout(rdev, dev, bss->bssid, GFP_KERNEL);
+	cfg80211_sme_assoc_timeout(wdev);
+
+	cfg80211_unhold_bss(bss_from_pub(bss));
+	cfg80211_put_bss(wiphy, bss);
+}
+EXPORT_SYMBOL(cfg80211_assoc_timeout);
+
+void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct ieee80211_mgmt *mgmt = (void *)buf;
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	trace_cfg80211_tx_mlme_mgmt(dev, buf, len);
+
+	if (WARN_ON(len < 2))
+		return;
+
+	if (ieee80211_is_deauth(mgmt->frame_control))
+		cfg80211_process_deauth(wdev, buf, len);
+	else
+		cfg80211_process_disassoc(wdev, buf, len);
+}
+EXPORT_SYMBOL(cfg80211_tx_mlme_mgmt);
+
+void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr,
+				  enum nl80211_key_type key_type, int key_id,
+				  const u8 *tsc, gfp_t gfp)
+{
+	struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
+#ifdef CONFIG_CFG80211_WEXT
+	union iwreq_data wrqu;
+	char *buf = kmalloc(128, gfp);
+
+	if (buf) {
+		sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
+			"keyid=%d %scast addr=%pM)", key_id,
+			key_type == NL80211_KEYTYPE_GROUP ? "broad" : "uni",
+			addr);
+		memset(&wrqu, 0, sizeof(wrqu));
+		wrqu.data.length = strlen(buf);
+		wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
+		kfree(buf);
+	}
+#endif
+
+	trace_cfg80211_michael_mic_failure(dev, addr, key_type, key_id, tsc);
+	nl80211_michael_mic_failure(rdev, dev, addr, key_type, key_id, tsc, gfp);
+}
+EXPORT_SYMBOL(cfg80211_michael_mic_failure);
+
+/* some MLME handling for userspace SME */
+int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
+		       struct net_device *dev,
+		       struct ieee80211_channel *chan,
+		       enum nl80211_auth_type auth_type,
+		       const u8 *bssid,
+		       const u8 *ssid, int ssid_len,
+		       const u8 *ie, int ie_len,
+		       const u8 *key, int key_len, int key_idx,
+		       const u8 *sae_data, int sae_data_len)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_auth_request req = {
+		.ie = ie,
+		.ie_len = ie_len,
+		.sae_data = sae_data,
+		.sae_data_len = sae_data_len,
+		.auth_type = auth_type,
+		.key = key,
+		.key_len = key_len,
+		.key_idx = key_idx,
+	};
+	int err;
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
+		if (!key || !key_len || key_idx < 0 || key_idx > 4)
+			return -EINVAL;
+
+	if (wdev->current_bss &&
+	    ether_addr_equal(bssid, wdev->current_bss->pub.bssid))
+		return -EALREADY;
+
+	req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
+				   WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
+	if (!req.bss)
+		return -ENOENT;
+
+	err = rdev_auth(rdev, dev, &req);
+
+	cfg80211_put_bss(&rdev->wiphy, req.bss);
+	return err;
+}
+
+/*  Do a logical ht_capa &= ht_capa_mask.  */
+void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
+			       const struct ieee80211_ht_cap *ht_capa_mask)
+{
+	int i;
+	u8 *p1, *p2;
+	if (!ht_capa_mask) {
+		memset(ht_capa, 0, sizeof(*ht_capa));
+		return;
+	}
+
+	p1 = (u8*)(ht_capa);
+	p2 = (u8*)(ht_capa_mask);
+	for (i = 0; i<sizeof(*ht_capa); i++)
+		p1[i] &= p2[i];
+}
+
+/*  Do a logical ht_capa &= ht_capa_mask.  */
+void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
+				const struct ieee80211_vht_cap *vht_capa_mask)
+{
+	int i;
+	u8 *p1, *p2;
+	if (!vht_capa_mask) {
+		memset(vht_capa, 0, sizeof(*vht_capa));
+		return;
+	}
+
+	p1 = (u8*)(vht_capa);
+	p2 = (u8*)(vht_capa_mask);
+	for (i = 0; i < sizeof(*vht_capa); i++)
+		p1[i] &= p2[i];
+}
+
+int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
+			struct net_device *dev,
+			struct ieee80211_channel *chan,
+			const u8 *bssid,
+			const u8 *ssid, int ssid_len,
+			struct cfg80211_assoc_request *req)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	int err;
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (wdev->current_bss &&
+	    (!req->prev_bssid || !ether_addr_equal(wdev->current_bss->pub.bssid,
+						   req->prev_bssid)))
+		return -EALREADY;
+
+	cfg80211_oper_and_ht_capa(&req->ht_capa_mask,
+				  rdev->wiphy.ht_capa_mod_mask);
+	cfg80211_oper_and_vht_capa(&req->vht_capa_mask,
+				   rdev->wiphy.vht_capa_mod_mask);
+
+	req->bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
+				    WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
+	if (!req->bss)
+		return -ENOENT;
+
+	err = rdev_assoc(rdev, dev, req);
+	if (!err)
+		cfg80211_hold_bss(bss_from_pub(req->bss));
+	else
+		cfg80211_put_bss(&rdev->wiphy, req->bss);
+
+	return err;
+}
+
+int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
+			 struct net_device *dev, const u8 *bssid,
+			 const u8 *ie, int ie_len, u16 reason,
+			 bool local_state_change)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_deauth_request req = {
+		.bssid = bssid,
+		.reason_code = reason,
+		.ie = ie,
+		.ie_len = ie_len,
+		.local_state_change = local_state_change,
+	};
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (local_state_change &&
+	    (!wdev->current_bss ||
+	     !ether_addr_equal(wdev->current_bss->pub.bssid, bssid)))
+		return 0;
+
+	return rdev_deauth(rdev, dev, &req);
+}
+
+int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
+			   struct net_device *dev, const u8 *bssid,
+			   const u8 *ie, int ie_len, u16 reason,
+			   bool local_state_change)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_disassoc_request req = {
+		.reason_code = reason,
+		.local_state_change = local_state_change,
+		.ie = ie,
+		.ie_len = ie_len,
+	};
+	int err;
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (!wdev->current_bss)
+		return -ENOTCONN;
+
+	if (ether_addr_equal(wdev->current_bss->pub.bssid, bssid))
+		req.bss = &wdev->current_bss->pub;
+	else
+		return -ENOTCONN;
+
+	err = rdev_disassoc(rdev, dev, &req);
+	if (err)
+		return err;
+
+	/* driver should have reported the disassoc */
+	WARN_ON(wdev->current_bss);
+	return 0;
+}
+
+void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
+			struct net_device *dev)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	u8 bssid[ETH_ALEN];
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (!rdev->ops->deauth)
+		return;
+
+	if (!wdev->current_bss)
+		return;
+
+	memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN);
+	cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0,
+			     WLAN_REASON_DEAUTH_LEAVING, false);
+}
+
+struct cfg80211_mgmt_registration {
+	struct list_head list;
+
+	u32 nlportid;
+
+	int match_len;
+
+	__le16 frame_type;
+
+	u8 match[];
+};
+
+int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_portid,
+				u16 frame_type, const u8 *match_data,
+				int match_len)
+{
+	struct wiphy *wiphy = wdev->wiphy;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
+	struct cfg80211_mgmt_registration *reg, *nreg;
+	int err = 0;
+	u16 mgmt_type;
+
+	if (!wdev->wiphy->mgmt_stypes)
+		return -EOPNOTSUPP;
+
+	if ((frame_type & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT)
+		return -EINVAL;
+
+	if (frame_type & ~(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE))
+		return -EINVAL;
+
+	mgmt_type = (frame_type & IEEE80211_FCTL_STYPE) >> 4;
+	if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].rx & BIT(mgmt_type)))
+		return -EINVAL;
+
+	nreg = kzalloc(sizeof(*reg) + match_len, GFP_KERNEL);
+	if (!nreg)
+		return -ENOMEM;
+
+	spin_lock_bh(&wdev->mgmt_registrations_lock);
+
+	list_for_each_entry(reg, &wdev->mgmt_registrations, list) {
+		int mlen = min(match_len, reg->match_len);
+
+		if (frame_type != le16_to_cpu(reg->frame_type))
+			continue;
+
+		if (memcmp(reg->match, match_data, mlen) == 0) {
+			err = -EALREADY;
+			break;
+		}
+	}
+
+	if (err) {
+		kfree(nreg);
+		goto out;
+	}
+
+	memcpy(nreg->match, match_data, match_len);
+	nreg->match_len = match_len;
+	nreg->nlportid = snd_portid;
+	nreg->frame_type = cpu_to_le16(frame_type);
+	list_add(&nreg->list, &wdev->mgmt_registrations);
+
+	if (rdev->ops->mgmt_frame_register)
+		rdev_mgmt_frame_register(rdev, wdev, frame_type, true);
+
+ out:
+	spin_unlock_bh(&wdev->mgmt_registrations_lock);
+
+	return err;
+}
+
+void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlportid)
+{
+	struct wiphy *wiphy = wdev->wiphy;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
+	struct cfg80211_mgmt_registration *reg, *tmp;
+
+	spin_lock_bh(&wdev->mgmt_registrations_lock);
+
+	list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) {
+		if (reg->nlportid != nlportid)
+			continue;
+
+		if (rdev->ops->mgmt_frame_register) {
+			u16 frame_type = le16_to_cpu(reg->frame_type);
+
+			rdev_mgmt_frame_register(rdev, wdev,
+						 frame_type, false);
+		}
+
+		list_del(&reg->list);
+		kfree(reg);
+	}
+
+	spin_unlock_bh(&wdev->mgmt_registrations_lock);
+
+	if (nlportid && rdev->crit_proto_nlportid == nlportid) {
+		rdev->crit_proto_nlportid = 0;
+		rdev_crit_proto_stop(rdev, wdev);
+	}
+
+	if (nlportid == wdev->ap_unexpected_nlportid)
+		wdev->ap_unexpected_nlportid = 0;
+}
+
+void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev)
+{
+	struct cfg80211_mgmt_registration *reg, *tmp;
+
+	spin_lock_bh(&wdev->mgmt_registrations_lock);
+
+	list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) {
+		list_del(&reg->list);
+		kfree(reg);
+	}
+
+	spin_unlock_bh(&wdev->mgmt_registrations_lock);
+}
+
+int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
+			  struct wireless_dev *wdev,
+			  struct cfg80211_mgmt_tx_params *params, u64 *cookie)
+{
+	const struct ieee80211_mgmt *mgmt;
+	u16 stype;
+
+	if (!wdev->wiphy->mgmt_stypes)
+		return -EOPNOTSUPP;
+
+	if (!rdev->ops->mgmt_tx)
+		return -EOPNOTSUPP;
+
+	if (params->len < 24 + 1)
+		return -EINVAL;
+
+	mgmt = (const struct ieee80211_mgmt *)params->buf;
+
+	if (!ieee80211_is_mgmt(mgmt->frame_control))
+		return -EINVAL;
+
+	stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE;
+	if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].tx & BIT(stype >> 4)))
+		return -EINVAL;
+
+	if (ieee80211_is_action(mgmt->frame_control) &&
+	    mgmt->u.action.category != WLAN_CATEGORY_PUBLIC) {
+		int err = 0;
+
+		wdev_lock(wdev);
+
+		switch (wdev->iftype) {
+		case NL80211_IFTYPE_ADHOC:
+		case NL80211_IFTYPE_STATION:
+		case NL80211_IFTYPE_P2P_CLIENT:
+			if (!wdev->current_bss) {
+				err = -ENOTCONN;
+				break;
+			}
+
+			if (!ether_addr_equal(wdev->current_bss->pub.bssid,
+					      mgmt->bssid)) {
+				err = -ENOTCONN;
+				break;
+			}
+
+			/*
+			 * check for IBSS DA must be done by driver as
+			 * cfg80211 doesn't track the stations
+			 */
+			if (wdev->iftype == NL80211_IFTYPE_ADHOC)
+				break;
+
+			/* for station, check that DA is the AP */
+			if (!ether_addr_equal(wdev->current_bss->pub.bssid,
+					      mgmt->da)) {
+				err = -ENOTCONN;
+				break;
+			}
+			break;
+		case NL80211_IFTYPE_AP:
+		case NL80211_IFTYPE_P2P_GO:
+		case NL80211_IFTYPE_AP_VLAN:
+			if (!ether_addr_equal(mgmt->bssid, wdev_address(wdev)))
+				err = -EINVAL;
+			break;
+		case NL80211_IFTYPE_MESH_POINT:
+			if (!ether_addr_equal(mgmt->sa, mgmt->bssid)) {
+				err = -EINVAL;
+				break;
+			}
+			/*
+			 * check for mesh DA must be done by driver as
+			 * cfg80211 doesn't track the stations
+			 */
+			break;
+		case NL80211_IFTYPE_P2P_DEVICE:
+			/*
+			 * fall through, P2P device only supports
+			 * public action frames
+			 */
+		default:
+			err = -EOPNOTSUPP;
+			break;
+		}
+		wdev_unlock(wdev);
+
+		if (err)
+			return err;
+	}
+
+	if (!ether_addr_equal(mgmt->sa, wdev_address(wdev)))
+		return -EINVAL;
+
+	/* Transmit the Action frame as requested by user space */
+	return rdev_mgmt_tx(rdev, wdev, params, cookie);
+}
+
+bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_mbm,
+		      const u8 *buf, size_t len, u32 flags)
+{
+	struct wiphy *wiphy = wdev->wiphy;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
+	struct cfg80211_mgmt_registration *reg;
+	const struct ieee80211_txrx_stypes *stypes =
+		&wiphy->mgmt_stypes[wdev->iftype];
+	struct ieee80211_mgmt *mgmt = (void *)buf;
+	const u8 *data;
+	int data_len;
+	bool result = false;
+	__le16 ftype = mgmt->frame_control &
+		cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE);
+	u16 stype;
+
+	trace_cfg80211_rx_mgmt(wdev, freq, sig_mbm);
+	stype = (le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE) >> 4;
+
+	if (!(stypes->rx & BIT(stype))) {
+		trace_cfg80211_return_bool(false);
+		return false;
+	}
+
+	data = buf + ieee80211_hdrlen(mgmt->frame_control);
+	data_len = len - ieee80211_hdrlen(mgmt->frame_control);
+
+	spin_lock_bh(&wdev->mgmt_registrations_lock);
+
+	list_for_each_entry(reg, &wdev->mgmt_registrations, list) {
+		if (reg->frame_type != ftype)
+			continue;
+
+		if (reg->match_len > data_len)
+			continue;
+
+		if (memcmp(reg->match, data, reg->match_len))
+			continue;
+
+		/* found match! */
+
+		/* Indicate the received Action frame to user space */
+		if (nl80211_send_mgmt(rdev, wdev, reg->nlportid,
+				      freq, sig_mbm,
+				      buf, len, flags, GFP_ATOMIC))
+			continue;
+
+		result = true;
+		break;
+	}
+
+	spin_unlock_bh(&wdev->mgmt_registrations_lock);
+
+	trace_cfg80211_return_bool(result);
+	return result;
+}
+EXPORT_SYMBOL(cfg80211_rx_mgmt);
+
+void cfg80211_dfs_channels_update_work(struct work_struct *work)
+{
+	struct delayed_work *delayed_work;
+	struct cfg80211_registered_device *rdev;
+	struct cfg80211_chan_def chandef;
+	struct ieee80211_supported_band *sband;
+	struct ieee80211_channel *c;
+	struct wiphy *wiphy;
+	bool check_again = false;
+	unsigned long timeout, next_time = 0;
+	int bandid, i;
+
+	delayed_work = container_of(work, struct delayed_work, work);
+	rdev = container_of(delayed_work, struct cfg80211_registered_device,
+			    dfs_update_channels_wk);
+	wiphy = &rdev->wiphy;
+
+	rtnl_lock();
+	for (bandid = 0; bandid < IEEE80211_NUM_BANDS; bandid++) {
+		sband = wiphy->bands[bandid];
+		if (!sband)
+			continue;
+
+		for (i = 0; i < sband->n_channels; i++) {
+			c = &sband->channels[i];
+
+			if (c->dfs_state != NL80211_DFS_UNAVAILABLE)
+				continue;
+
+			timeout = c->dfs_state_entered + msecs_to_jiffies(
+					IEEE80211_DFS_MIN_NOP_TIME_MS);
+
+			if (time_after_eq(jiffies, timeout)) {
+				c->dfs_state = NL80211_DFS_USABLE;
+				c->dfs_state_entered = jiffies;
+
+				cfg80211_chandef_create(&chandef, c,
+							NL80211_CHAN_NO_HT);
+
+				nl80211_radar_notify(rdev, &chandef,
+						     NL80211_RADAR_NOP_FINISHED,
+						     NULL, GFP_ATOMIC);
+				continue;
+			}
+
+			if (!check_again)
+				next_time = timeout - jiffies;
+			else
+				next_time = min(next_time, timeout - jiffies);
+			check_again = true;
+		}
+	}
+	rtnl_unlock();
+
+	/* reschedule if there are other channels waiting to be cleared again */
+	if (check_again)
+		queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk,
+				   next_time);
+}
+
+
+void cfg80211_radar_event(struct wiphy *wiphy,
+			  struct cfg80211_chan_def *chandef,
+			  gfp_t gfp)
+{
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
+	unsigned long timeout;
+
+	trace_cfg80211_radar_event(wiphy, chandef);
+
+	/* only set the chandef supplied channel to unavailable, in
+	 * case the radar is detected on only one of multiple channels
+	 * spanned by the chandef.
+	 */
+	cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_UNAVAILABLE);
+
+	timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_NOP_TIME_MS);
+	queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk,
+			   timeout);
+
+	nl80211_radar_notify(rdev, chandef, NL80211_RADAR_DETECTED, NULL, gfp);
+}
+EXPORT_SYMBOL(cfg80211_radar_event);
+
+void cfg80211_cac_event(struct net_device *netdev,
+			const struct cfg80211_chan_def *chandef,
+			enum nl80211_radar_event event, gfp_t gfp)
+{
+	struct wireless_dev *wdev = netdev->ieee80211_ptr;
+	struct wiphy *wiphy = wdev->wiphy;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
+	unsigned long timeout;
+
+	trace_cfg80211_cac_event(netdev, event);
+
+	if (WARN_ON(!wdev->cac_started))
+		return;
+
+	if (WARN_ON(!wdev->chandef.chan))
+		return;
+
+	switch (event) {
+	case NL80211_RADAR_CAC_FINISHED:
+		timeout = wdev->cac_start_time +
+			  msecs_to_jiffies(wdev->cac_time_ms);
+		WARN_ON(!time_after_eq(jiffies, timeout));
+		cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_AVAILABLE);
+		break;
+	case NL80211_RADAR_CAC_ABORTED:
+		break;
+	default:
+		WARN_ON(1);
+		return;
+	}
+	wdev->cac_started = false;
+
+	nl80211_radar_notify(rdev, chandef, event, netdev, gfp);
+}
+EXPORT_SYMBOL(cfg80211_cac_event);

net/wireless/nl80211.h

@@ -0,0 +1,83 @@
+#ifndef __NET_WIRELESS_NL80211_H
+#define __NET_WIRELESS_NL80211_H
+
+#include "core.h"
+
+int nl80211_init(void);
+void nl80211_exit(void);
+void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
+			  enum nl80211_commands cmd);
+void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
+			     struct wireless_dev *wdev);
+struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
+				       struct wireless_dev *wdev, bool aborted);
+void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
+			      struct sk_buff *msg);
+void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
+			     struct net_device *netdev, u32 cmd);
+void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
+				     struct net_device *netdev);
+void nl80211_send_reg_change_event(struct regulatory_request *request);
+void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
+			  struct net_device *netdev,
+			  const u8 *buf, size_t len, gfp_t gfp);
+void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
+			   struct net_device *netdev,
+			   const u8 *buf, size_t len, gfp_t gfp,
+			   int uapsd_queues);
+void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
+			 struct net_device *netdev,
+			 const u8 *buf, size_t len, gfp_t gfp);
+void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
+			   struct net_device *netdev,
+			   const u8 *buf, size_t len, gfp_t gfp);
+void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
+			       struct net_device *netdev,
+			       const u8 *addr, gfp_t gfp);
+void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
+				struct net_device *netdev,
+				const u8 *addr, gfp_t gfp);
+void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
+				 struct net_device *netdev, const u8 *bssid,
+				 const u8 *req_ie, size_t req_ie_len,
+				 const u8 *resp_ie, size_t resp_ie_len,
+				 u16 status, gfp_t gfp);
+void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
+			 struct net_device *netdev, const u8 *bssid,
+			 const u8 *req_ie, size_t req_ie_len,
+			 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp);
+void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
+			       struct net_device *netdev, u16 reason,
+			       const u8 *ie, size_t ie_len, bool from_ap);
+
+void
+nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
+			    struct net_device *netdev, const u8 *addr,
+			    enum nl80211_key_type key_type,
+			    int key_id, const u8 *tsc, gfp_t gfp);
+
+void
+nl80211_send_beacon_hint_event(struct wiphy *wiphy,
+			       struct ieee80211_channel *channel_before,
+			       struct ieee80211_channel *channel_after);
+
+void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
+			     struct net_device *netdev, const u8 *bssid,
+			     gfp_t gfp);
+
+int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
+		      struct wireless_dev *wdev, u32 nlpid,
+		      int freq, int sig_dbm,
+		      const u8 *buf, size_t len, u32 flags, gfp_t gfp);
+
+void
+nl80211_radar_notify(struct cfg80211_registered_device *rdev,
+		     const struct cfg80211_chan_def *chandef,
+		     enum nl80211_radar_event event,
+		     struct net_device *netdev, gfp_t gfp);
+
+void nl80211_send_ap_stopped(struct wireless_dev *wdev);
+
+void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev);
+
+#endif /* __NET_WIRELESS_NL80211_H */

net/wireless/radiotap.c

@@ -0,0 +1,369 @@
+/*
+ * Radiotap parser
+ *
+ * Copyright 2007		Andy Green <andy@warmcat.com>
+ * Copyright 2009		Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Alternatively, this software may be distributed under the terms of BSD
+ * license.
+ *
+ * See COPYING for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/export.h>
+#include <net/cfg80211.h>
+#include <net/ieee80211_radiotap.h>
+#include <asm/unaligned.h>
+
+/* function prototypes and related defs are in include/net/cfg80211.h */
+
+static const struct radiotap_align_size rtap_namespace_sizes[] = {
+	[IEEE80211_RADIOTAP_TSFT] = { .align = 8, .size = 8, },
+	[IEEE80211_RADIOTAP_FLAGS] = { .align = 1, .size = 1, },
+	[IEEE80211_RADIOTAP_RATE] = { .align = 1, .size = 1, },
+	[IEEE80211_RADIOTAP_CHANNEL] = { .align = 2, .size = 4, },
+	[IEEE80211_RADIOTAP_FHSS] = { .align = 2, .size = 2, },
+	[IEEE80211_RADIOTAP_DBM_ANTSIGNAL] = { .align = 1, .size = 1, },
+	[IEEE80211_RADIOTAP_DBM_ANTNOISE] = { .align = 1, .size = 1, },
+	[IEEE80211_RADIOTAP_LOCK_QUALITY] = { .align = 2, .size = 2, },
+	[IEEE80211_RADIOTAP_TX_ATTENUATION] = { .align = 2, .size = 2, },
+	[IEEE80211_RADIOTAP_DB_TX_ATTENUATION] = { .align = 2, .size = 2, },
+	[IEEE80211_RADIOTAP_DBM_TX_POWER] = { .align = 1, .size = 1, },
+	[IEEE80211_RADIOTAP_ANTENNA] = { .align = 1, .size = 1, },
+	[IEEE80211_RADIOTAP_DB_ANTSIGNAL] = { .align = 1, .size = 1, },
+	[IEEE80211_RADIOTAP_DB_ANTNOISE] = { .align = 1, .size = 1, },
+	[IEEE80211_RADIOTAP_RX_FLAGS] = { .align = 2, .size = 2, },
+	[IEEE80211_RADIOTAP_TX_FLAGS] = { .align = 2, .size = 2, },
+	[IEEE80211_RADIOTAP_RTS_RETRIES] = { .align = 1, .size = 1, },
+	[IEEE80211_RADIOTAP_DATA_RETRIES] = { .align = 1, .size = 1, },
+	[IEEE80211_RADIOTAP_MCS] = { .align = 1, .size = 3, },
+	[IEEE80211_RADIOTAP_AMPDU_STATUS] = { .align = 4, .size = 8, },
+	/*
+	 * add more here as they are defined in radiotap.h
+	 */
+};
+
+static const struct ieee80211_radiotap_namespace radiotap_ns = {
+	.n_bits = ARRAY_SIZE(rtap_namespace_sizes),
+	.align_size = rtap_namespace_sizes,
+};
+
+/**
+ * ieee80211_radiotap_iterator_init - radiotap parser iterator initialization
+ * @iterator: radiotap_iterator to initialize
+ * @radiotap_header: radiotap header to parse
+ * @max_length: total length we can parse into (eg, whole packet length)
+ *
+ * Returns: 0 or a negative error code if there is a problem.
+ *
+ * This function initializes an opaque iterator struct which can then
+ * be passed to ieee80211_radiotap_iterator_next() to visit every radiotap
+ * argument which is present in the header.  It knows about extended
+ * present headers and handles them.
+ *
+ * How to use:
+ * call __ieee80211_radiotap_iterator_init() to init a semi-opaque iterator
+ * struct ieee80211_radiotap_iterator (no need to init the struct beforehand)
+ * checking for a good 0 return code.  Then loop calling
+ * __ieee80211_radiotap_iterator_next()... it returns either 0,
+ * -ENOENT if there are no more args to parse, or -EINVAL if there is a problem.
+ * The iterator's @this_arg member points to the start of the argument
+ * associated with the current argument index that is present, which can be
+ * found in the iterator's @this_arg_index member.  This arg index corresponds
+ * to the IEEE80211_RADIOTAP_... defines.
+ *
+ * Radiotap header length:
+ * You can find the CPU-endian total radiotap header length in
+ * iterator->max_length after executing ieee80211_radiotap_iterator_init()
+ * successfully.
+ *
+ * Alignment Gotcha:
+ * You must take care when dereferencing iterator.this_arg
+ * for multibyte types... the pointer is not aligned.  Use
+ * get_unaligned((type *)iterator.this_arg) to dereference
+ * iterator.this_arg for type "type" safely on all arches.
+ *
+ * Example code:
+ * See Documentation/networking/radiotap-headers.txt
+ */
+
+int ieee80211_radiotap_iterator_init(
+	struct ieee80211_radiotap_iterator *iterator,
+	struct ieee80211_radiotap_header *radiotap_header,
+	int max_length, const struct ieee80211_radiotap_vendor_namespaces *vns)
+{
+	/* check the radiotap header can actually be present */
+	if (max_length < sizeof(struct ieee80211_radiotap_header))
+		return -EINVAL;
+
+	/* Linux only supports version 0 radiotap format */
+	if (radiotap_header->it_version)
+		return -EINVAL;
+
+	/* sanity check for allowed length and radiotap length field */
+	if (max_length < get_unaligned_le16(&radiotap_header->it_len))
+		return -EINVAL;
+
+	iterator->_rtheader = radiotap_header;
+	iterator->_max_length = get_unaligned_le16(&radiotap_header->it_len);
+	iterator->_arg_index = 0;
+	iterator->_bitmap_shifter = get_unaligned_le32(&radiotap_header->it_present);
+	iterator->_arg = (uint8_t *)radiotap_header + sizeof(*radiotap_header);
+	iterator->_reset_on_ext = 0;
+	iterator->_next_bitmap = &radiotap_header->it_present;
+	iterator->_next_bitmap++;
+	iterator->_vns = vns;
+	iterator->current_namespace = &radiotap_ns;
+	iterator->is_radiotap_ns = 1;
+
+	/* find payload start allowing for extended bitmap(s) */
+
+	if (iterator->_bitmap_shifter & (1<<IEEE80211_RADIOTAP_EXT)) {
+		if ((unsigned long)iterator->_arg -
+		    (unsigned long)iterator->_rtheader + sizeof(uint32_t) >
+		    (unsigned long)iterator->_max_length)
+			return -EINVAL;
+		while (get_unaligned_le32(iterator->_arg) &
+					(1 << IEEE80211_RADIOTAP_EXT)) {
+			iterator->_arg += sizeof(uint32_t);
+
+			/*
+			 * check for insanity where the present bitmaps
+			 * keep claiming to extend up to or even beyond the
+			 * stated radiotap header length
+			 */
+
+			if ((unsigned long)iterator->_arg -
+			    (unsigned long)iterator->_rtheader +
+			    sizeof(uint32_t) >
+			    (unsigned long)iterator->_max_length)
+				return -EINVAL;
+		}
+
+		iterator->_arg += sizeof(uint32_t);
+
+		/*
+		 * no need to check again for blowing past stated radiotap
+		 * header length, because ieee80211_radiotap_iterator_next
+		 * checks it before it is dereferenced
+		 */
+	}
+
+	iterator->this_arg = iterator->_arg;
+
+	/* we are all initialized happily */
+
+	return 0;
+}
+EXPORT_SYMBOL(ieee80211_radiotap_iterator_init);
+
+static void find_ns(struct ieee80211_radiotap_iterator *iterator,
+		    uint32_t oui, uint8_t subns)
+{
+	int i;
+
+	iterator->current_namespace = NULL;
+
+	if (!iterator->_vns)
+		return;
+
+	for (i = 0; i < iterator->_vns->n_ns; i++) {
+		if (iterator->_vns->ns[i].oui != oui)
+			continue;
+		if (iterator->_vns->ns[i].subns != subns)
+			continue;
+
+		iterator->current_namespace = &iterator->_vns->ns[i];
+		break;
+	}
+}
+
+
+
+/**
+ * ieee80211_radiotap_iterator_next - return next radiotap parser iterator arg
+ * @iterator: radiotap_iterator to move to next arg (if any)
+ *
+ * Returns: 0 if there is an argument to handle,
+ * -ENOENT if there are no more args or -EINVAL
+ * if there is something else wrong.
+ *
+ * This function provides the next radiotap arg index (IEEE80211_RADIOTAP_*)
+ * in @this_arg_index and sets @this_arg to point to the
+ * payload for the field.  It takes care of alignment handling and extended
+ * present fields.  @this_arg can be changed by the caller (eg,
+ * incremented to move inside a compound argument like
+ * IEEE80211_RADIOTAP_CHANNEL).  The args pointed to are in
+ * little-endian format whatever the endianess of your CPU.
+ *
+ * Alignment Gotcha:
+ * You must take care when dereferencing iterator.this_arg
+ * for multibyte types... the pointer is not aligned.  Use
+ * get_unaligned((type *)iterator.this_arg) to dereference
+ * iterator.this_arg for type "type" safely on all arches.
+ */
+
+int ieee80211_radiotap_iterator_next(
+	struct ieee80211_radiotap_iterator *iterator)
+{
+	while (1) {
+		int hit = 0;
+		int pad, align, size, subns;
+		uint32_t oui;
+
+		/* if no more EXT bits, that's it */
+		if ((iterator->_arg_index % 32) == IEEE80211_RADIOTAP_EXT &&
+		    !(iterator->_bitmap_shifter & 1))
+			return -ENOENT;
+
+		if (!(iterator->_bitmap_shifter & 1))
+			goto next_entry; /* arg not present */
+
+		/* get alignment/size of data */
+		switch (iterator->_arg_index % 32) {
+		case IEEE80211_RADIOTAP_RADIOTAP_NAMESPACE:
+		case IEEE80211_RADIOTAP_EXT:
+			align = 1;
+			size = 0;
+			break;
+		case IEEE80211_RADIOTAP_VENDOR_NAMESPACE:
+			align = 2;
+			size = 6;
+			break;
+		default:
+			if (!iterator->current_namespace ||
+			    iterator->_arg_index >= iterator->current_namespace->n_bits) {
+				if (iterator->current_namespace == &radiotap_ns)
+					return -ENOENT;
+				align = 0;
+			} else {
+				align = iterator->current_namespace->align_size[iterator->_arg_index].align;
+				size = iterator->current_namespace->align_size[iterator->_arg_index].size;
+			}
+			if (!align) {
+				/* skip all subsequent data */
+				iterator->_arg = iterator->_next_ns_data;
+				/* give up on this namespace */
+				iterator->current_namespace = NULL;
+				goto next_entry;
+			}
+			break;
+		}
+
+		/*
+		 * arg is present, account for alignment padding
+		 *
+		 * Note that these alignments are relative to the start
+		 * of the radiotap header.  There is no guarantee
+		 * that the radiotap header itself is aligned on any
+		 * kind of boundary.
+		 *
+		 * The above is why get_unaligned() is used to dereference
+		 * multibyte elements from the radiotap area.
+		 */
+
+		pad = ((unsigned long)iterator->_arg -
+		       (unsigned long)iterator->_rtheader) & (align - 1);
+
+		if (pad)
+			iterator->_arg += align - pad;
+
+		if (iterator->_arg_index % 32 == IEEE80211_RADIOTAP_VENDOR_NAMESPACE) {
+			int vnslen;
+
+			if ((unsigned long)iterator->_arg + size -
+			    (unsigned long)iterator->_rtheader >
+			    (unsigned long)iterator->_max_length)
+				return -EINVAL;
+
+			oui = (*iterator->_arg << 16) |
+				(*(iterator->_arg + 1) << 8) |
+				*(iterator->_arg + 2);
+			subns = *(iterator->_arg + 3);
+
+			find_ns(iterator, oui, subns);
+
+			vnslen = get_unaligned_le16(iterator->_arg + 4);
+			iterator->_next_ns_data = iterator->_arg + size + vnslen;
+			if (!iterator->current_namespace)
+				size += vnslen;
+		}
+
+		/*
+		 * this is what we will return to user, but we need to
+		 * move on first so next call has something fresh to test
+		 */
+		iterator->this_arg_index = iterator->_arg_index;
+		iterator->this_arg = iterator->_arg;
+		iterator->this_arg_size = size;
+
+		/* internally move on the size of this arg */
+		iterator->_arg += size;
+
+		/*
+		 * check for insanity where we are given a bitmap that
+		 * claims to have more arg content than the length of the
+		 * radiotap section.  We will normally end up equalling this
+		 * max_length on the last arg, never exceeding it.
+		 */
+
+		if ((unsigned long)iterator->_arg -
+		    (unsigned long)iterator->_rtheader >
+		    (unsigned long)iterator->_max_length)
+			return -EINVAL;
+
+		/* these special ones are valid in each bitmap word */
+		switch (iterator->_arg_index % 32) {
+		case IEEE80211_RADIOTAP_VENDOR_NAMESPACE:
+			iterator->_reset_on_ext = 1;
+
+			iterator->is_radiotap_ns = 0;
+			/*
+			 * If parser didn't register this vendor
+			 * namespace with us, allow it to show it
+			 * as 'raw. Do do that, set argument index
+			 * to vendor namespace.
+			 */
+			iterator->this_arg_index =
+				IEEE80211_RADIOTAP_VENDOR_NAMESPACE;
+			if (!iterator->current_namespace)
+				hit = 1;
+			goto next_entry;
+		case IEEE80211_RADIOTAP_RADIOTAP_NAMESPACE:
+			iterator->_reset_on_ext = 1;
+			iterator->current_namespace = &radiotap_ns;
+			iterator->is_radiotap_ns = 1;
+			goto next_entry;
+		case IEEE80211_RADIOTAP_EXT:
+			/*
+			 * bit 31 was set, there is more
+			 * -- move to next u32 bitmap
+			 */
+			iterator->_bitmap_shifter =
+				get_unaligned_le32(iterator->_next_bitmap);
+			iterator->_next_bitmap++;
+			if (iterator->_reset_on_ext)
+				iterator->_arg_index = 0;
+			else
+				iterator->_arg_index++;
+			iterator->_reset_on_ext = 0;
+			break;
+		default:
+			/* we've got a hit! */
+			hit = 1;
+ next_entry:
+			iterator->_bitmap_shifter >>= 1;
+			iterator->_arg_index++;
+		}
+
+		/* if we found a valid arg earlier, return it now */
+		if (hit)
+			return 0;
+	}
+}
+EXPORT_SYMBOL(ieee80211_radiotap_iterator_next);

net/wireless/rdev-ops.h

@@ -0,0 +1,949 @@
+#ifndef __CFG80211_RDEV_OPS
+#define __CFG80211_RDEV_OPS
+
+#include <linux/rtnetlink.h>
+#include <net/cfg80211.h>
+#include "core.h"
+#include "trace.h"
+
+static inline int rdev_suspend(struct cfg80211_registered_device *rdev,
+			       struct cfg80211_wowlan *wowlan)
+{
+	int ret;
+	trace_rdev_suspend(&rdev->wiphy, wowlan);
+	ret = rdev->ops->suspend(&rdev->wiphy, wowlan);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_resume(struct cfg80211_registered_device *rdev)
+{
+	int ret;
+	trace_rdev_resume(&rdev->wiphy);
+	ret = rdev->ops->resume(&rdev->wiphy);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline void rdev_set_wakeup(struct cfg80211_registered_device *rdev,
+				   bool enabled)
+{
+	trace_rdev_set_wakeup(&rdev->wiphy, enabled);
+	rdev->ops->set_wakeup(&rdev->wiphy, enabled);
+	trace_rdev_return_void(&rdev->wiphy);
+}
+
+static inline struct wireless_dev
+*rdev_add_virtual_intf(struct cfg80211_registered_device *rdev, char *name,
+		       enum nl80211_iftype type, u32 *flags,
+		       struct vif_params *params)
+{
+	struct wireless_dev *ret;
+	trace_rdev_add_virtual_intf(&rdev->wiphy, name, type);
+	ret = rdev->ops->add_virtual_intf(&rdev->wiphy, name, type, flags,
+					  params);
+	trace_rdev_return_wdev(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int
+rdev_del_virtual_intf(struct cfg80211_registered_device *rdev,
+		      struct wireless_dev *wdev)
+{
+	int ret;
+	trace_rdev_del_virtual_intf(&rdev->wiphy, wdev);
+	ret = rdev->ops->del_virtual_intf(&rdev->wiphy, wdev);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int
+rdev_change_virtual_intf(struct cfg80211_registered_device *rdev,
+			 struct net_device *dev, enum nl80211_iftype type,
+			 u32 *flags, struct vif_params *params)
+{
+	int ret;
+	trace_rdev_change_virtual_intf(&rdev->wiphy, dev, type);
+	ret = rdev->ops->change_virtual_intf(&rdev->wiphy, dev, type, flags,
+					     params);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_add_key(struct cfg80211_registered_device *rdev,
+			       struct net_device *netdev, u8 key_index,
+			       bool pairwise, const u8 *mac_addr,
+			       struct key_params *params)
+{
+	int ret;
+	trace_rdev_add_key(&rdev->wiphy, netdev, key_index, pairwise, mac_addr);
+	ret = rdev->ops->add_key(&rdev->wiphy, netdev, key_index, pairwise,
+				  mac_addr, params);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int
+rdev_get_key(struct cfg80211_registered_device *rdev, struct net_device *netdev,
+	     u8 key_index, bool pairwise, const u8 *mac_addr, void *cookie,
+	     void (*callback)(void *cookie, struct key_params*))
+{
+	int ret;
+	trace_rdev_get_key(&rdev->wiphy, netdev, key_index, pairwise, mac_addr);
+	ret = rdev->ops->get_key(&rdev->wiphy, netdev, key_index, pairwise,
+				  mac_addr, cookie, callback);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_del_key(struct cfg80211_registered_device *rdev,
+			       struct net_device *netdev, u8 key_index,
+			       bool pairwise, const u8 *mac_addr)
+{
+	int ret;
+	trace_rdev_del_key(&rdev->wiphy, netdev, key_index, pairwise, mac_addr);
+	ret = rdev->ops->del_key(&rdev->wiphy, netdev, key_index, pairwise,
+				  mac_addr);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int
+rdev_set_default_key(struct cfg80211_registered_device *rdev,
+		     struct net_device *netdev, u8 key_index, bool unicast,
+		     bool multicast)
+{
+	int ret;
+	trace_rdev_set_default_key(&rdev->wiphy, netdev, key_index,
+				   unicast, multicast);
+	ret = rdev->ops->set_default_key(&rdev->wiphy, netdev, key_index,
+					  unicast, multicast);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int
+rdev_set_default_mgmt_key(struct cfg80211_registered_device *rdev,
+			  struct net_device *netdev, u8 key_index)
+{
+	int ret;
+	trace_rdev_set_default_mgmt_key(&rdev->wiphy, netdev, key_index);
+	ret = rdev->ops->set_default_mgmt_key(&rdev->wiphy, netdev,
+					       key_index);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_start_ap(struct cfg80211_registered_device *rdev,
+				struct net_device *dev,
+				struct cfg80211_ap_settings *settings)
+{
+	int ret;
+	trace_rdev_start_ap(&rdev->wiphy, dev, settings);
+	ret = rdev->ops->start_ap(&rdev->wiphy, dev, settings);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_change_beacon(struct cfg80211_registered_device *rdev,
+				     struct net_device *dev,
+				     struct cfg80211_beacon_data *info)
+{
+	int ret;
+	trace_rdev_change_beacon(&rdev->wiphy, dev, info);
+	ret = rdev->ops->change_beacon(&rdev->wiphy, dev, info);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_stop_ap(struct cfg80211_registered_device *rdev,
+			       struct net_device *dev)
+{
+	int ret;
+	trace_rdev_stop_ap(&rdev->wiphy, dev);
+	ret = rdev->ops->stop_ap(&rdev->wiphy, dev);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_add_station(struct cfg80211_registered_device *rdev,
+				   struct net_device *dev, u8 *mac,
+				   struct station_parameters *params)
+{
+	int ret;
+	trace_rdev_add_station(&rdev->wiphy, dev, mac, params);
+	ret = rdev->ops->add_station(&rdev->wiphy, dev, mac, params);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_del_station(struct cfg80211_registered_device *rdev,
+				   struct net_device *dev, u8 *mac)
+{
+	int ret;
+	trace_rdev_del_station(&rdev->wiphy, dev, mac);
+	ret = rdev->ops->del_station(&rdev->wiphy, dev, mac);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_change_station(struct cfg80211_registered_device *rdev,
+				      struct net_device *dev, u8 *mac,
+				      struct station_parameters *params)
+{
+	int ret;
+	trace_rdev_change_station(&rdev->wiphy, dev, mac, params);
+	ret = rdev->ops->change_station(&rdev->wiphy, dev, mac, params);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_get_station(struct cfg80211_registered_device *rdev,
+				   struct net_device *dev, const u8 *mac,
+				   struct station_info *sinfo)
+{
+	int ret;
+	trace_rdev_get_station(&rdev->wiphy, dev, mac);
+	ret = rdev->ops->get_station(&rdev->wiphy, dev, mac, sinfo);
+	trace_rdev_return_int_station_info(&rdev->wiphy, ret, sinfo);
+	return ret;
+}
+
+static inline int rdev_dump_station(struct cfg80211_registered_device *rdev,
+				    struct net_device *dev, int idx, u8 *mac,
+				    struct station_info *sinfo)
+{
+	int ret;
+	trace_rdev_dump_station(&rdev->wiphy, dev, idx, mac);
+	ret = rdev->ops->dump_station(&rdev->wiphy, dev, idx, mac, sinfo);
+	trace_rdev_return_int_station_info(&rdev->wiphy, ret, sinfo);
+	return ret;
+}
+
+static inline int rdev_add_mpath(struct cfg80211_registered_device *rdev,
+				 struct net_device *dev, u8 *dst, u8 *next_hop)
+{
+	int ret;
+	trace_rdev_add_mpath(&rdev->wiphy, dev, dst, next_hop);
+	ret = rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_del_mpath(struct cfg80211_registered_device *rdev,
+				 struct net_device *dev, u8 *dst)
+{
+	int ret;
+	trace_rdev_del_mpath(&rdev->wiphy, dev, dst);
+	ret = rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_change_mpath(struct cfg80211_registered_device *rdev,
+				    struct net_device *dev, u8 *dst,
+				    u8 *next_hop)
+{
+	int ret;
+	trace_rdev_change_mpath(&rdev->wiphy, dev, dst, next_hop);
+	ret = rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_get_mpath(struct cfg80211_registered_device *rdev,
+				 struct net_device *dev, u8 *dst, u8 *next_hop,
+				 struct mpath_info *pinfo)
+{
+	int ret;
+	trace_rdev_get_mpath(&rdev->wiphy, dev, dst, next_hop);
+	ret = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, pinfo);
+	trace_rdev_return_int_mpath_info(&rdev->wiphy, ret, pinfo);
+	return ret;
+
+}
+
+static inline int rdev_dump_mpath(struct cfg80211_registered_device *rdev,
+				  struct net_device *dev, int idx, u8 *dst,
+				  u8 *next_hop, struct mpath_info *pinfo)
+
+{
+	int ret;
+	trace_rdev_dump_mpath(&rdev->wiphy, dev, idx, dst, next_hop);
+	ret = rdev->ops->dump_mpath(&rdev->wiphy, dev, idx, dst, next_hop,
+				     pinfo);
+	trace_rdev_return_int_mpath_info(&rdev->wiphy, ret, pinfo);
+	return ret;
+}
+
+static inline int
+rdev_get_mesh_config(struct cfg80211_registered_device *rdev,
+		     struct net_device *dev, struct mesh_config *conf)
+{
+	int ret;
+	trace_rdev_get_mesh_config(&rdev->wiphy, dev);
+	ret = rdev->ops->get_mesh_config(&rdev->wiphy, dev, conf);
+	trace_rdev_return_int_mesh_config(&rdev->wiphy, ret, conf);
+	return ret;
+}
+
+static inline int
+rdev_update_mesh_config(struct cfg80211_registered_device *rdev,
+			struct net_device *dev, u32 mask,
+			const struct mesh_config *nconf)
+{
+	int ret;
+	trace_rdev_update_mesh_config(&rdev->wiphy, dev, mask, nconf);
+	ret = rdev->ops->update_mesh_config(&rdev->wiphy, dev, mask, nconf);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_join_mesh(struct cfg80211_registered_device *rdev,
+				 struct net_device *dev,
+				 const struct mesh_config *conf,
+				 const struct mesh_setup *setup)
+{
+	int ret;
+	trace_rdev_join_mesh(&rdev->wiphy, dev, conf, setup);
+	ret = rdev->ops->join_mesh(&rdev->wiphy, dev, conf, setup);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+
+static inline int rdev_leave_mesh(struct cfg80211_registered_device *rdev,
+				  struct net_device *dev)
+{
+	int ret;
+	trace_rdev_leave_mesh(&rdev->wiphy, dev);
+	ret = rdev->ops->leave_mesh(&rdev->wiphy, dev);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_change_bss(struct cfg80211_registered_device *rdev,
+				  struct net_device *dev,
+				  struct bss_parameters *params)
+
+{
+	int ret;
+	trace_rdev_change_bss(&rdev->wiphy, dev, params);
+	ret = rdev->ops->change_bss(&rdev->wiphy, dev, params);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_set_txq_params(struct cfg80211_registered_device *rdev,
+				      struct net_device *dev,
+				      struct ieee80211_txq_params *params)
+
+{
+	int ret;
+	trace_rdev_set_txq_params(&rdev->wiphy, dev, params);
+	ret = rdev->ops->set_txq_params(&rdev->wiphy, dev, params);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int
+rdev_libertas_set_mesh_channel(struct cfg80211_registered_device *rdev,
+			       struct net_device *dev,
+			       struct ieee80211_channel *chan)
+{
+	int ret;
+	trace_rdev_libertas_set_mesh_channel(&rdev->wiphy, dev, chan);
+	ret = rdev->ops->libertas_set_mesh_channel(&rdev->wiphy, dev, chan);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int
+rdev_set_monitor_channel(struct cfg80211_registered_device *rdev,
+			 struct cfg80211_chan_def *chandef)
+{
+	int ret;
+	trace_rdev_set_monitor_channel(&rdev->wiphy, chandef);
+	ret = rdev->ops->set_monitor_channel(&rdev->wiphy, chandef);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_scan(struct cfg80211_registered_device *rdev,
+			    struct cfg80211_scan_request *request)
+{
+	int ret;
+	trace_rdev_scan(&rdev->wiphy, request);
+	ret = rdev->ops->scan(&rdev->wiphy, request);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_auth(struct cfg80211_registered_device *rdev,
+			    struct net_device *dev,
+			    struct cfg80211_auth_request *req)
+{
+	int ret;
+	trace_rdev_auth(&rdev->wiphy, dev, req);
+	ret = rdev->ops->auth(&rdev->wiphy, dev, req);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_assoc(struct cfg80211_registered_device *rdev,
+			     struct net_device *dev,
+			     struct cfg80211_assoc_request *req)
+{
+	int ret;
+	trace_rdev_assoc(&rdev->wiphy, dev, req);
+	ret = rdev->ops->assoc(&rdev->wiphy, dev, req);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_deauth(struct cfg80211_registered_device *rdev,
+			      struct net_device *dev,
+			      struct cfg80211_deauth_request *req)
+{
+	int ret;
+	trace_rdev_deauth(&rdev->wiphy, dev, req);
+	ret = rdev->ops->deauth(&rdev->wiphy, dev, req);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_disassoc(struct cfg80211_registered_device *rdev,
+				struct net_device *dev,
+				struct cfg80211_disassoc_request *req)
+{
+	int ret;
+	trace_rdev_disassoc(&rdev->wiphy, dev, req);
+	ret = rdev->ops->disassoc(&rdev->wiphy, dev, req);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_connect(struct cfg80211_registered_device *rdev,
+			       struct net_device *dev,
+			       struct cfg80211_connect_params *sme)
+{
+	int ret;
+	trace_rdev_connect(&rdev->wiphy, dev, sme);
+	ret = rdev->ops->connect(&rdev->wiphy, dev, sme);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_disconnect(struct cfg80211_registered_device *rdev,
+				  struct net_device *dev, u16 reason_code)
+{
+	int ret;
+	trace_rdev_disconnect(&rdev->wiphy, dev, reason_code);
+	ret = rdev->ops->disconnect(&rdev->wiphy, dev, reason_code);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_join_ibss(struct cfg80211_registered_device *rdev,
+				 struct net_device *dev,
+				 struct cfg80211_ibss_params *params)
+{
+	int ret;
+	trace_rdev_join_ibss(&rdev->wiphy, dev, params);
+	ret = rdev->ops->join_ibss(&rdev->wiphy, dev, params);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_leave_ibss(struct cfg80211_registered_device *rdev,
+				  struct net_device *dev)
+{
+	int ret;
+	trace_rdev_leave_ibss(&rdev->wiphy, dev);
+	ret = rdev->ops->leave_ibss(&rdev->wiphy, dev);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int
+rdev_set_wiphy_params(struct cfg80211_registered_device *rdev, u32 changed)
+{
+	int ret;
+	trace_rdev_set_wiphy_params(&rdev->wiphy, changed);
+	ret = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_set_tx_power(struct cfg80211_registered_device *rdev,
+				    struct wireless_dev *wdev,
+				    enum nl80211_tx_power_setting type, int mbm)
+{
+	int ret;
+	trace_rdev_set_tx_power(&rdev->wiphy, wdev, type, mbm);
+	ret = rdev->ops->set_tx_power(&rdev->wiphy, wdev, type, mbm);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_get_tx_power(struct cfg80211_registered_device *rdev,
+				    struct wireless_dev *wdev, int *dbm)
+{
+	int ret;
+	trace_rdev_get_tx_power(&rdev->wiphy, wdev);
+	ret = rdev->ops->get_tx_power(&rdev->wiphy, wdev, dbm);
+	trace_rdev_return_int_int(&rdev->wiphy, ret, *dbm);
+	return ret;
+}
+
+static inline int rdev_set_wds_peer(struct cfg80211_registered_device *rdev,
+				    struct net_device *dev, const u8 *addr)
+{
+	int ret;
+	trace_rdev_set_wds_peer(&rdev->wiphy, dev, addr);
+	ret = rdev->ops->set_wds_peer(&rdev->wiphy, dev, addr);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline void rdev_rfkill_poll(struct cfg80211_registered_device *rdev)
+{
+	trace_rdev_rfkill_poll(&rdev->wiphy);
+	rdev->ops->rfkill_poll(&rdev->wiphy);
+	trace_rdev_return_void(&rdev->wiphy);
+}
+
+
+#ifdef CONFIG_NL80211_TESTMODE
+static inline int rdev_testmode_cmd(struct cfg80211_registered_device *rdev,
+				    struct wireless_dev *wdev,
+				    void *data, int len)
+{
+	int ret;
+	trace_rdev_testmode_cmd(&rdev->wiphy, wdev);
+	ret = rdev->ops->testmode_cmd(&rdev->wiphy, wdev, data, len);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_testmode_dump(struct cfg80211_registered_device *rdev,
+				     struct sk_buff *skb,
+				     struct netlink_callback *cb, void *data,
+				     int len)
+{
+	int ret;
+	trace_rdev_testmode_dump(&rdev->wiphy);
+	ret = rdev->ops->testmode_dump(&rdev->wiphy, skb, cb, data, len);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+#endif
+
+static inline int
+rdev_set_bitrate_mask(struct cfg80211_registered_device *rdev,
+		      struct net_device *dev, const u8 *peer,
+		      const struct cfg80211_bitrate_mask *mask)
+{
+	int ret;
+	trace_rdev_set_bitrate_mask(&rdev->wiphy, dev, peer, mask);
+	ret = rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, peer, mask);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_dump_survey(struct cfg80211_registered_device *rdev,
+				   struct net_device *netdev, int idx,
+				   struct survey_info *info)
+{
+	int ret;
+	trace_rdev_dump_survey(&rdev->wiphy, netdev, idx);
+	ret = rdev->ops->dump_survey(&rdev->wiphy, netdev, idx, info);
+	if (ret < 0)
+		trace_rdev_return_int(&rdev->wiphy, ret);
+	else
+		trace_rdev_return_int_survey_info(&rdev->wiphy, ret, info);
+	return ret;
+}
+
+static inline int rdev_set_pmksa(struct cfg80211_registered_device *rdev,
+				 struct net_device *netdev,
+				 struct cfg80211_pmksa *pmksa)
+{
+	int ret;
+	trace_rdev_set_pmksa(&rdev->wiphy, netdev, pmksa);
+	ret = rdev->ops->set_pmksa(&rdev->wiphy, netdev, pmksa);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_del_pmksa(struct cfg80211_registered_device *rdev,
+				 struct net_device *netdev,
+				 struct cfg80211_pmksa *pmksa)
+{
+	int ret;
+	trace_rdev_del_pmksa(&rdev->wiphy, netdev, pmksa);
+	ret = rdev->ops->del_pmksa(&rdev->wiphy, netdev, pmksa);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_flush_pmksa(struct cfg80211_registered_device *rdev,
+				   struct net_device *netdev)
+{
+	int ret;
+	trace_rdev_flush_pmksa(&rdev->wiphy, netdev);
+	ret = rdev->ops->flush_pmksa(&rdev->wiphy, netdev);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int
+rdev_remain_on_channel(struct cfg80211_registered_device *rdev,
+		       struct wireless_dev *wdev,
+		       struct ieee80211_channel *chan,
+		       unsigned int duration, u64 *cookie)
+{
+	int ret;
+	trace_rdev_remain_on_channel(&rdev->wiphy, wdev, chan, duration);
+	ret = rdev->ops->remain_on_channel(&rdev->wiphy, wdev, chan,
+					   duration, cookie);
+	trace_rdev_return_int_cookie(&rdev->wiphy, ret, *cookie);
+	return ret;
+}
+
+static inline int
+rdev_cancel_remain_on_channel(struct cfg80211_registered_device *rdev,
+			      struct wireless_dev *wdev, u64 cookie)
+{
+	int ret;
+	trace_rdev_cancel_remain_on_channel(&rdev->wiphy, wdev, cookie);
+	ret = rdev->ops->cancel_remain_on_channel(&rdev->wiphy, wdev, cookie);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_mgmt_tx(struct cfg80211_registered_device *rdev,
+			       struct wireless_dev *wdev,
+			       struct cfg80211_mgmt_tx_params *params,
+			       u64 *cookie)
+{
+	int ret;
+	trace_rdev_mgmt_tx(&rdev->wiphy, wdev, params);
+	ret = rdev->ops->mgmt_tx(&rdev->wiphy, wdev, params, cookie);
+	trace_rdev_return_int_cookie(&rdev->wiphy, ret, *cookie);
+	return ret;
+}
+
+static inline int
+rdev_mgmt_tx_cancel_wait(struct cfg80211_registered_device *rdev,
+			 struct wireless_dev *wdev, u64 cookie)
+{
+	int ret;
+	trace_rdev_mgmt_tx_cancel_wait(&rdev->wiphy, wdev, cookie);
+	ret = rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, wdev, cookie);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_set_power_mgmt(struct cfg80211_registered_device *rdev,
+				      struct net_device *dev, bool enabled,
+				      int timeout)
+{
+	int ret;
+	trace_rdev_set_power_mgmt(&rdev->wiphy, dev, enabled, timeout);
+	ret = rdev->ops->set_power_mgmt(&rdev->wiphy, dev, enabled, timeout);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int
+rdev_set_cqm_rssi_config(struct cfg80211_registered_device *rdev,
+			 struct net_device *dev, s32 rssi_thold, u32 rssi_hyst)
+{
+	int ret;
+	trace_rdev_set_cqm_rssi_config(&rdev->wiphy, dev, rssi_thold,
+				       rssi_hyst);
+	ret = rdev->ops->set_cqm_rssi_config(&rdev->wiphy, dev, rssi_thold,
+				       rssi_hyst);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int
+rdev_set_cqm_txe_config(struct cfg80211_registered_device *rdev,
+			struct net_device *dev, u32 rate, u32 pkts, u32 intvl)
+{
+	int ret;
+	trace_rdev_set_cqm_txe_config(&rdev->wiphy, dev, rate, pkts, intvl);
+	ret = rdev->ops->set_cqm_txe_config(&rdev->wiphy, dev, rate, pkts,
+					     intvl);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline void
+rdev_mgmt_frame_register(struct cfg80211_registered_device *rdev,
+			 struct wireless_dev *wdev, u16 frame_type, bool reg)
+{
+	trace_rdev_mgmt_frame_register(&rdev->wiphy, wdev , frame_type, reg);
+	rdev->ops->mgmt_frame_register(&rdev->wiphy, wdev , frame_type, reg);
+	trace_rdev_return_void(&rdev->wiphy);
+}
+
+static inline int rdev_set_antenna(struct cfg80211_registered_device *rdev,
+				   u32 tx_ant, u32 rx_ant)
+{
+	int ret;
+	trace_rdev_set_antenna(&rdev->wiphy, tx_ant, rx_ant);
+	ret = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_get_antenna(struct cfg80211_registered_device *rdev,
+				   u32 *tx_ant, u32 *rx_ant)
+{
+	int ret;
+	trace_rdev_get_antenna(&rdev->wiphy);
+	ret = rdev->ops->get_antenna(&rdev->wiphy, tx_ant, rx_ant);
+	if (ret)
+		trace_rdev_return_int(&rdev->wiphy, ret);
+	else
+		trace_rdev_return_int_tx_rx(&rdev->wiphy, ret, *tx_ant,
+					    *rx_ant);
+	return ret;
+}
+
+static inline int
+rdev_sched_scan_start(struct cfg80211_registered_device *rdev,
+		      struct net_device *dev,
+		      struct cfg80211_sched_scan_request *request)
+{
+	int ret;
+	trace_rdev_sched_scan_start(&rdev->wiphy, dev, request);
+	ret = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_sched_scan_stop(struct cfg80211_registered_device *rdev,
+				       struct net_device *dev)
+{
+	int ret;
+	trace_rdev_sched_scan_stop(&rdev->wiphy, dev);
+	ret = rdev->ops->sched_scan_stop(&rdev->wiphy, dev);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_set_rekey_data(struct cfg80211_registered_device *rdev,
+				      struct net_device *dev,
+				      struct cfg80211_gtk_rekey_data *data)
+{
+	int ret;
+	trace_rdev_set_rekey_data(&rdev->wiphy, dev);
+	ret = rdev->ops->set_rekey_data(&rdev->wiphy, dev, data);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_tdls_mgmt(struct cfg80211_registered_device *rdev,
+				 struct net_device *dev, u8 *peer,
+				 u8 action_code, u8 dialog_token,
+				 u16 status_code, u32 peer_capability,
+				 bool initiator, const u8 *buf, size_t len)
+{
+	int ret;
+	trace_rdev_tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
+			     dialog_token, status_code, peer_capability,
+			     initiator, buf, len);
+	ret = rdev->ops->tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
+				   dialog_token, status_code, peer_capability,
+				   initiator, buf, len);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_tdls_oper(struct cfg80211_registered_device *rdev,
+				 struct net_device *dev, u8 *peer,
+				 enum nl80211_tdls_operation oper)
+{
+	int ret;
+	trace_rdev_tdls_oper(&rdev->wiphy, dev, peer, oper);
+	ret = rdev->ops->tdls_oper(&rdev->wiphy, dev, peer, oper);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_probe_client(struct cfg80211_registered_device *rdev,
+				    struct net_device *dev, const u8 *peer,
+				    u64 *cookie)
+{
+	int ret;
+	trace_rdev_probe_client(&rdev->wiphy, dev, peer);
+	ret = rdev->ops->probe_client(&rdev->wiphy, dev, peer, cookie);
+	trace_rdev_return_int_cookie(&rdev->wiphy, ret, *cookie);
+	return ret;
+}
+
+static inline int rdev_set_noack_map(struct cfg80211_registered_device *rdev,
+				     struct net_device *dev, u16 noack_map)
+{
+	int ret;
+	trace_rdev_set_noack_map(&rdev->wiphy, dev, noack_map);
+	ret = rdev->ops->set_noack_map(&rdev->wiphy, dev, noack_map);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int
+rdev_get_channel(struct cfg80211_registered_device *rdev,
+		 struct wireless_dev *wdev,
+		 struct cfg80211_chan_def *chandef)
+{
+	int ret;
+
+	trace_rdev_get_channel(&rdev->wiphy, wdev);
+	ret = rdev->ops->get_channel(&rdev->wiphy, wdev, chandef);
+	trace_rdev_return_chandef(&rdev->wiphy, ret, chandef);
+
+	return ret;
+}
+
+static inline int rdev_start_p2p_device(struct cfg80211_registered_device *rdev,
+					struct wireless_dev *wdev)
+{
+	int ret;
+
+	trace_rdev_start_p2p_device(&rdev->wiphy, wdev);
+	ret = rdev->ops->start_p2p_device(&rdev->wiphy, wdev);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline void rdev_stop_p2p_device(struct cfg80211_registered_device *rdev,
+					struct wireless_dev *wdev)
+{
+	trace_rdev_stop_p2p_device(&rdev->wiphy, wdev);
+	rdev->ops->stop_p2p_device(&rdev->wiphy, wdev);
+	trace_rdev_return_void(&rdev->wiphy);
+}
+
+static inline int rdev_set_mac_acl(struct cfg80211_registered_device *rdev,
+				   struct net_device *dev,
+				   struct cfg80211_acl_data *params)
+{
+	int ret;
+
+	trace_rdev_set_mac_acl(&rdev->wiphy, dev, params);
+	ret = rdev->ops->set_mac_acl(&rdev->wiphy, dev, params);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_update_ft_ies(struct cfg80211_registered_device *rdev,
+				     struct net_device *dev,
+				     struct cfg80211_update_ft_ies_params *ftie)
+{
+	int ret;
+
+	trace_rdev_update_ft_ies(&rdev->wiphy, dev, ftie);
+	ret = rdev->ops->update_ft_ies(&rdev->wiphy, dev, ftie);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_crit_proto_start(struct cfg80211_registered_device *rdev,
+					struct wireless_dev *wdev,
+					enum nl80211_crit_proto_id protocol,
+					u16 duration)
+{
+	int ret;
+
+	trace_rdev_crit_proto_start(&rdev->wiphy, wdev, protocol, duration);
+	ret = rdev->ops->crit_proto_start(&rdev->wiphy, wdev,
+					  protocol, duration);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline void rdev_crit_proto_stop(struct cfg80211_registered_device *rdev,
+				       struct wireless_dev *wdev)
+{
+	trace_rdev_crit_proto_stop(&rdev->wiphy, wdev);
+	rdev->ops->crit_proto_stop(&rdev->wiphy, wdev);
+	trace_rdev_return_void(&rdev->wiphy);
+}
+
+static inline int rdev_channel_switch(struct cfg80211_registered_device *rdev,
+				      struct net_device *dev,
+				      struct cfg80211_csa_settings *params)
+{
+	int ret;
+
+	trace_rdev_channel_switch(&rdev->wiphy, dev, params);
+	ret = rdev->ops->channel_switch(&rdev->wiphy, dev, params);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_set_qos_map(struct cfg80211_registered_device *rdev,
+				   struct net_device *dev,
+				   struct cfg80211_qos_map *qos_map)
+{
+	int ret = -EOPNOTSUPP;
+
+	if (rdev->ops->set_qos_map) {
+		trace_rdev_set_qos_map(&rdev->wiphy, dev, qos_map);
+		ret = rdev->ops->set_qos_map(&rdev->wiphy, dev, qos_map);
+		trace_rdev_return_int(&rdev->wiphy, ret);
+	}
+
+	return ret;
+}
+
+static inline int
+rdev_set_ap_chanwidth(struct cfg80211_registered_device *rdev,
+		      struct net_device *dev, struct cfg80211_chan_def *chandef)
+{
+	int ret;
+
+	trace_rdev_set_ap_chanwidth(&rdev->wiphy, dev, chandef);
+	ret = rdev->ops->set_ap_chanwidth(&rdev->wiphy, dev, chandef);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+
+	return ret;
+}
+
+static inline int
+rdev_add_tx_ts(struct cfg80211_registered_device *rdev,
+	       struct net_device *dev, u8 tsid, const u8 *peer,
+	       u8 user_prio, u16 admitted_time)
+{
+	int ret = -EOPNOTSUPP;
+
+	trace_rdev_add_tx_ts(&rdev->wiphy, dev, tsid, peer,
+			     user_prio, admitted_time);
+	if (rdev->ops->add_tx_ts)
+		ret = rdev->ops->add_tx_ts(&rdev->wiphy, dev, tsid, peer,
+					   user_prio, admitted_time);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+
+	return ret;
+}
+
+static inline int
+rdev_del_tx_ts(struct cfg80211_registered_device *rdev,
+	       struct net_device *dev, u8 tsid, const u8 *peer)
+{
+	int ret = -EOPNOTSUPP;
+
+	trace_rdev_del_tx_ts(&rdev->wiphy, dev, tsid, peer);
+	if (rdev->ops->del_tx_ts)
+		ret = rdev->ops->del_tx_ts(&rdev->wiphy, dev, tsid, peer);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+
+	return ret;
+}
+
+#endif /* __CFG80211_RDEV_OPS */

net/wireless/reg.h

@@ -0,0 +1,125 @@
+#ifndef __NET_WIRELESS_REG_H
+#define __NET_WIRELESS_REG_H
+/*
+ * Copyright 2008-2011	Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+extern const struct ieee80211_regdomain __rcu *cfg80211_regdomain;
+
+bool reg_is_valid_request(const char *alpha2);
+bool is_world_regdom(const char *alpha2);
+bool reg_supported_dfs_region(enum nl80211_dfs_regions dfs_region);
+enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy);
+
+int regulatory_hint_user(const char *alpha2,
+			 enum nl80211_user_reg_hint_type user_reg_hint_type);
+int regulatory_hint_indoor_user(void);
+
+void wiphy_regulatory_register(struct wiphy *wiphy);
+void wiphy_regulatory_deregister(struct wiphy *wiphy);
+
+int __init regulatory_init(void);
+void regulatory_exit(void);
+
+int set_regdom(const struct ieee80211_regdomain *rd);
+unsigned int reg_get_max_bandwidth(const struct ieee80211_regdomain *rd,
+				   const struct ieee80211_reg_rule *rule);
+
+bool reg_last_request_cell_base(void);
+
+/**
+ * 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
+ *
+ * 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. If you cannot make use of this feature you can
+ * set the wiphy->disable_beacon_hints to true.
+ */
+int regulatory_hint_found_beacon(struct wiphy *wiphy,
+				 struct ieee80211_channel *beacon_chan,
+				 gfp_t gfp);
+
+/**
+ * regulatory_hint_country_ie - hints a country IE as a regulatory domain
+ * @wiphy: the wireless device giving the hint (used only for reporting
+ *	conflicts)
+ * @band: the band on which the country IE was received on. This determines
+ *	the band we'll process the country IE channel triplets for.
+ * @country_ie: pointer to the country IE
+ * @country_ie_len: length of the country IE
+ *
+ * We will intersect the rd with the what CRDA tells us should apply
+ * for the alpha2 this country IE belongs to, this prevents APs from
+ * sending us incorrect or outdated information against a country.
+ *
+ * The AP is expected to provide Country IE channel triplets for the
+ * band it is on. It is technically possible for APs to send channel
+ * country IE triplets even for channels outside of the band they are
+ * in but for that they would have to use the regulatory extension
+ * in combination with a triplet but this behaviour is currently
+ * not observed. For this reason if a triplet is seen with channel
+ * information for a band the BSS is not present in it will be ignored.
+ */
+void regulatory_hint_country_ie(struct wiphy *wiphy,
+			 enum ieee80211_band band,
+			 const u8 *country_ie,
+			 u8 country_ie_len);
+
+/**
+ * regulatory_hint_disconnect - informs all devices have been disconneted
+ *
+ * Regulotory rules can be enhanced further upon scanning and upon
+ * connection to an AP. These rules become stale if we disconnect
+ * and go to another country, whether or not we suspend and resume.
+ * If we suspend, go to another country and resume we'll automatically
+ * get disconnected shortly after resuming and things will be reset as well.
+ * This routine is a helper to restore regulatory settings to how they were
+ * prior to our first connect attempt. This includes ignoring country IE and
+ * beacon regulatory hints. The ieee80211_regdom module parameter will always
+ * be respected but if a user had set the regulatory domain that will take
+ * precedence.
+ *
+ * Must be called from process context.
+ */
+void regulatory_hint_disconnect(void);
+
+/**
+ * cfg80211_get_unii - get the U-NII band for the frequency
+ * @freq: the frequency for which we want to get the UNII band.
+
+ * Get a value specifying the U-NII band frequency belongs to.
+ * U-NII bands are defined by the FCC in C.F.R 47 part 15.
+ *
+ * Returns -EINVAL if freq is invalid, 0 for UNII-1, 1 for UNII-2A,
+ * 2 for UNII-2B, 3 for UNII-2C and 4 for UNII-3.
+ */
+int cfg80211_get_unii(int freq);
+
+/**
+ * regulatory_indoor_allowed - is indoor operation allowed
+ */
+bool regulatory_indoor_allowed(void);
+
+#endif  /* __NET_WIRELESS_REG_H */

net/wireless/regdb.h

@@ -0,0 +1,23 @@
+#ifndef __REGDB_H__
+#define __REGDB_H__
+
+/*
+ * Copyright 2009 John W. Linville <linville@tuxdriver.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+extern const struct ieee80211_regdomain *reg_regdb[];
+extern int reg_regdb_size;
+
+#endif /* __REGDB_H__ */

net/wireless/sme.c

@@ -0,0 +1,992 @@
+/*
+ * SME code for cfg80211
+ * both driver SME event handling and the SME implementation
+ * (for nl80211's connect() and wext)
+ *
+ * Copyright 2009	Johannes Berg <johannes@sipsolutions.net>
+ * Copyright (C) 2009   Intel Corporation. All rights reserved.
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/if_arp.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <linux/wireless.h>
+#include <linux/export.h>
+#include <net/iw_handler.h>
+#include <net/cfg80211.h>
+#include <net/rtnetlink.h>
+#include "nl80211.h"
+#include "reg.h"
+#include "rdev-ops.h"
+
+/*
+ * Software SME in cfg80211, using auth/assoc/deauth calls to the
+ * driver. This is is for implementing nl80211's connect/disconnect
+ * and wireless extensions (if configured.)
+ */
+
+struct cfg80211_conn {
+	struct cfg80211_connect_params params;
+	/* these are sub-states of the _CONNECTING sme_state */
+	enum {
+		CFG80211_CONN_SCANNING,
+		CFG80211_CONN_SCAN_AGAIN,
+		CFG80211_CONN_AUTHENTICATE_NEXT,
+		CFG80211_CONN_AUTHENTICATING,
+		CFG80211_CONN_AUTH_FAILED,
+		CFG80211_CONN_ASSOCIATE_NEXT,
+		CFG80211_CONN_ASSOCIATING,
+		CFG80211_CONN_ASSOC_FAILED,
+		CFG80211_CONN_DEAUTH,
+		CFG80211_CONN_CONNECTED,
+	} state;
+	u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
+	u8 *ie;
+	size_t ie_len;
+	bool auto_auth, prev_bssid_valid;
+};
+
+static void cfg80211_sme_free(struct wireless_dev *wdev)
+{
+	if (!wdev->conn)
+		return;
+
+	kfree(wdev->conn->ie);
+	kfree(wdev->conn);
+	wdev->conn = NULL;
+}
+
+static int cfg80211_conn_scan(struct wireless_dev *wdev)
+{
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+	struct cfg80211_scan_request *request;
+	int n_channels, err;
+
+	ASSERT_RTNL();
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (rdev->scan_req || rdev->scan_msg)
+		return -EBUSY;
+
+	if (wdev->conn->params.channel)
+		n_channels = 1;
+	else
+		n_channels = ieee80211_get_num_supported_channels(wdev->wiphy);
+
+	request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) +
+			  sizeof(request->channels[0]) * n_channels,
+			  GFP_KERNEL);
+	if (!request)
+		return -ENOMEM;
+
+	if (wdev->conn->params.channel)
+		request->channels[0] = wdev->conn->params.channel;
+	else {
+		int i = 0, j;
+		enum ieee80211_band band;
+		struct ieee80211_supported_band *bands;
+		struct ieee80211_channel *channel;
+
+		for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+			bands = wdev->wiphy->bands[band];
+			if (!bands)
+				continue;
+			for (j = 0; j < bands->n_channels; j++) {
+				channel = &bands->channels[j];
+				if (channel->flags & IEEE80211_CHAN_DISABLED)
+					continue;
+				request->channels[i++] = channel;
+			}
+			request->rates[band] = (1 << bands->n_bitrates) - 1;
+		}
+		n_channels = i;
+	}
+	request->n_channels = n_channels;
+	request->ssids = (void *)&request->channels[n_channels];
+	request->n_ssids = 1;
+
+	memcpy(request->ssids[0].ssid, wdev->conn->params.ssid,
+		wdev->conn->params.ssid_len);
+	request->ssids[0].ssid_len = wdev->conn->params.ssid_len;
+
+	request->wdev = wdev;
+	request->wiphy = &rdev->wiphy;
+	request->scan_start = jiffies;
+
+	rdev->scan_req = request;
+
+	err = rdev_scan(rdev, request);
+	if (!err) {
+		wdev->conn->state = CFG80211_CONN_SCANNING;
+		nl80211_send_scan_start(rdev, wdev);
+		dev_hold(wdev->netdev);
+	} else {
+		rdev->scan_req = NULL;
+		kfree(request);
+	}
+	return err;
+}
+
+static int cfg80211_conn_do_work(struct wireless_dev *wdev)
+{
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+	struct cfg80211_connect_params *params;
+	struct cfg80211_assoc_request req = {};
+	int err;
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (!wdev->conn)
+		return 0;
+
+	params = &wdev->conn->params;
+
+	switch (wdev->conn->state) {
+	case CFG80211_CONN_SCANNING:
+		/* didn't find it during scan ... */
+		return -ENOENT;
+	case CFG80211_CONN_SCAN_AGAIN:
+		return cfg80211_conn_scan(wdev);
+	case CFG80211_CONN_AUTHENTICATE_NEXT:
+		if (WARN_ON(!rdev->ops->auth))
+			return -EOPNOTSUPP;
+		wdev->conn->state = CFG80211_CONN_AUTHENTICATING;
+		return cfg80211_mlme_auth(rdev, wdev->netdev,
+					  params->channel, params->auth_type,
+					  params->bssid,
+					  params->ssid, params->ssid_len,
+					  NULL, 0,
+					  params->key, params->key_len,
+					  params->key_idx, NULL, 0);
+	case CFG80211_CONN_AUTH_FAILED:
+		return -ENOTCONN;
+	case CFG80211_CONN_ASSOCIATE_NEXT:
+		if (WARN_ON(!rdev->ops->assoc))
+			return -EOPNOTSUPP;
+		wdev->conn->state = CFG80211_CONN_ASSOCIATING;
+		if (wdev->conn->prev_bssid_valid)
+			req.prev_bssid = wdev->conn->prev_bssid;
+		req.ie = params->ie;
+		req.ie_len = params->ie_len;
+		req.use_mfp = params->mfp != NL80211_MFP_NO;
+		req.crypto = params->crypto;
+		req.flags = params->flags;
+		req.ht_capa = params->ht_capa;
+		req.ht_capa_mask = params->ht_capa_mask;
+		req.vht_capa = params->vht_capa;
+		req.vht_capa_mask = params->vht_capa_mask;
+
+		err = cfg80211_mlme_assoc(rdev, wdev->netdev, params->channel,
+					  params->bssid, params->ssid,
+					  params->ssid_len, &req);
+		if (err)
+			cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
+					     NULL, 0,
+					     WLAN_REASON_DEAUTH_LEAVING,
+					     false);
+		return err;
+	case CFG80211_CONN_ASSOC_FAILED:
+		cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
+				     NULL, 0,
+				     WLAN_REASON_DEAUTH_LEAVING, false);
+		return -ENOTCONN;
+	case CFG80211_CONN_DEAUTH:
+		cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
+				     NULL, 0,
+				     WLAN_REASON_DEAUTH_LEAVING, false);
+		/* free directly, disconnected event already sent */
+		cfg80211_sme_free(wdev);
+		return 0;
+	default:
+		return 0;
+	}
+}
+
+void cfg80211_conn_work(struct work_struct *work)
+{
+	struct cfg80211_registered_device *rdev =
+		container_of(work, struct cfg80211_registered_device, conn_work);
+	struct wireless_dev *wdev;
+	u8 bssid_buf[ETH_ALEN], *bssid = NULL;
+
+	rtnl_lock();
+
+	list_for_each_entry(wdev, &rdev->wdev_list, list) {
+		if (!wdev->netdev)
+			continue;
+
+		wdev_lock(wdev);
+		if (!netif_running(wdev->netdev)) {
+			wdev_unlock(wdev);
+			continue;
+		}
+		if (!wdev->conn ||
+		    wdev->conn->state == CFG80211_CONN_CONNECTED) {
+			wdev_unlock(wdev);
+			continue;
+		}
+		if (wdev->conn->params.bssid) {
+			memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
+			bssid = bssid_buf;
+		}
+		if (cfg80211_conn_do_work(wdev)) {
+			__cfg80211_connect_result(
+					wdev->netdev, bssid,
+					NULL, 0, NULL, 0,
+					WLAN_STATUS_UNSPECIFIED_FAILURE,
+					false, NULL);
+		}
+		wdev_unlock(wdev);
+	}
+
+	rtnl_unlock();
+}
+
+/* Returned bss is reference counted and must be cleaned up appropriately. */
+static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
+{
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+	struct cfg80211_bss *bss;
+	u16 capa = WLAN_CAPABILITY_ESS;
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (wdev->conn->params.privacy)
+		capa |= WLAN_CAPABILITY_PRIVACY;
+
+	bss = cfg80211_get_bss(wdev->wiphy, wdev->conn->params.channel,
+			       wdev->conn->params.bssid,
+			       wdev->conn->params.ssid,
+			       wdev->conn->params.ssid_len,
+			       WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_PRIVACY,
+			       capa);
+	if (!bss)
+		return NULL;
+
+	memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN);
+	wdev->conn->params.bssid = wdev->conn->bssid;
+	wdev->conn->params.channel = bss->channel;
+	wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
+	schedule_work(&rdev->conn_work);
+
+	return bss;
+}
+
+static void __cfg80211_sme_scan_done(struct net_device *dev)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+	struct cfg80211_bss *bss;
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (!wdev->conn)
+		return;
+
+	if (wdev->conn->state != CFG80211_CONN_SCANNING &&
+	    wdev->conn->state != CFG80211_CONN_SCAN_AGAIN)
+		return;
+
+	bss = cfg80211_get_conn_bss(wdev);
+	if (bss)
+		cfg80211_put_bss(&rdev->wiphy, bss);
+	else
+		schedule_work(&rdev->conn_work);
+}
+
+void cfg80211_sme_scan_done(struct net_device *dev)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+
+	wdev_lock(wdev);
+	__cfg80211_sme_scan_done(dev);
+	wdev_unlock(wdev);
+}
+
+void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len)
+{
+	struct wiphy *wiphy = wdev->wiphy;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
+	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
+	u16 status_code = le16_to_cpu(mgmt->u.auth.status_code);
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (!wdev->conn || wdev->conn->state == CFG80211_CONN_CONNECTED)
+		return;
+
+	if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
+	    wdev->conn->auto_auth &&
+	    wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) {
+		/* select automatically between only open, shared, leap */
+		switch (wdev->conn->params.auth_type) {
+		case NL80211_AUTHTYPE_OPEN_SYSTEM:
+			if (wdev->connect_keys)
+				wdev->conn->params.auth_type =
+					NL80211_AUTHTYPE_SHARED_KEY;
+			else
+				wdev->conn->params.auth_type =
+					NL80211_AUTHTYPE_NETWORK_EAP;
+			break;
+		case NL80211_AUTHTYPE_SHARED_KEY:
+			wdev->conn->params.auth_type =
+				NL80211_AUTHTYPE_NETWORK_EAP;
+			break;
+		default:
+			/* huh? */
+			wdev->conn->params.auth_type =
+				NL80211_AUTHTYPE_OPEN_SYSTEM;
+			break;
+		}
+		wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
+		schedule_work(&rdev->conn_work);
+	} else if (status_code != WLAN_STATUS_SUCCESS) {
+		__cfg80211_connect_result(wdev->netdev, mgmt->bssid,
+					  NULL, 0, NULL, 0,
+					  status_code, false, NULL);
+	} else if (wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
+		wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
+		schedule_work(&rdev->conn_work);
+	}
+}
+
+bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status)
+{
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+
+	if (!wdev->conn)
+		return false;
+
+	if (status == WLAN_STATUS_SUCCESS) {
+		wdev->conn->state = CFG80211_CONN_CONNECTED;
+		return false;
+	}
+
+	if (wdev->conn->prev_bssid_valid) {
+		/*
+		 * Some stupid APs don't accept reassoc, so we
+		 * need to fall back to trying regular assoc;
+		 * return true so no event is sent to userspace.
+		 */
+		wdev->conn->prev_bssid_valid = false;
+		wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
+		schedule_work(&rdev->conn_work);
+		return true;
+	}
+
+	wdev->conn->state = CFG80211_CONN_ASSOC_FAILED;
+	schedule_work(&rdev->conn_work);
+	return false;
+}
+
+void cfg80211_sme_deauth(struct wireless_dev *wdev)
+{
+	cfg80211_sme_free(wdev);
+}
+
+void cfg80211_sme_auth_timeout(struct wireless_dev *wdev)
+{
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+
+	if (!wdev->conn)
+		return;
+
+	wdev->conn->state = CFG80211_CONN_AUTH_FAILED;
+	schedule_work(&rdev->conn_work);
+}
+
+void cfg80211_sme_disassoc(struct wireless_dev *wdev)
+{
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+
+	if (!wdev->conn)
+		return;
+
+	wdev->conn->state = CFG80211_CONN_DEAUTH;
+	schedule_work(&rdev->conn_work);
+}
+
+void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev)
+{
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+
+	if (!wdev->conn)
+		return;
+
+	wdev->conn->state = CFG80211_CONN_ASSOC_FAILED;
+	schedule_work(&rdev->conn_work);
+}
+
+static int cfg80211_sme_connect(struct wireless_dev *wdev,
+				struct cfg80211_connect_params *connect,
+				const u8 *prev_bssid)
+{
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+	struct cfg80211_bss *bss;
+	int err;
+
+	if (!rdev->ops->auth || !rdev->ops->assoc)
+		return -EOPNOTSUPP;
+
+	if (wdev->current_bss)
+		return -EALREADY;
+
+	if (WARN_ON(wdev->conn))
+		return -EINPROGRESS;
+
+	wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
+	if (!wdev->conn)
+		return -ENOMEM;
+
+	/*
+	 * Copy all parameters, and treat explicitly IEs, BSSID, SSID.
+	 */
+	memcpy(&wdev->conn->params, connect, sizeof(*connect));
+	if (connect->bssid) {
+		wdev->conn->params.bssid = wdev->conn->bssid;
+		memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
+	}
+
+	if (connect->ie) {
+		wdev->conn->ie = kmemdup(connect->ie, connect->ie_len,
+					GFP_KERNEL);
+		wdev->conn->params.ie = wdev->conn->ie;
+		if (!wdev->conn->ie) {
+			kfree(wdev->conn);
+			wdev->conn = NULL;
+			return -ENOMEM;
+		}
+	}
+
+	if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
+		wdev->conn->auto_auth = true;
+		/* start with open system ... should mostly work */
+		wdev->conn->params.auth_type =
+			NL80211_AUTHTYPE_OPEN_SYSTEM;
+	} else {
+		wdev->conn->auto_auth = false;
+	}
+
+	wdev->conn->params.ssid = wdev->ssid;
+	wdev->conn->params.ssid_len = wdev->ssid_len;
+
+	/* see if we have the bss already */
+	bss = cfg80211_get_conn_bss(wdev);
+
+	if (prev_bssid) {
+		memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
+		wdev->conn->prev_bssid_valid = true;
+	}
+
+	/* we're good if we have a matching bss struct */
+	if (bss) {
+		err = cfg80211_conn_do_work(wdev);
+		cfg80211_put_bss(wdev->wiphy, bss);
+	} else {
+		/* otherwise we'll need to scan for the AP first */
+		err = cfg80211_conn_scan(wdev);
+
+		/*
+		 * If we can't scan right now, then we need to scan again
+		 * after the current scan finished, since the parameters
+		 * changed (unless we find a good AP anyway).
+		 */
+		if (err == -EBUSY) {
+			err = 0;
+			wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
+		}
+	}
+
+	if (err)
+		cfg80211_sme_free(wdev);
+
+	return err;
+}
+
+static int cfg80211_sme_disconnect(struct wireless_dev *wdev, u16 reason)
+{
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+	int err;
+
+	if (!wdev->conn)
+		return 0;
+
+	if (!rdev->ops->deauth)
+		return -EOPNOTSUPP;
+
+	if (wdev->conn->state == CFG80211_CONN_SCANNING ||
+	    wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) {
+		err = 0;
+		goto out;
+	}
+
+	/* wdev->conn->params.bssid must be set if > SCANNING */
+	err = cfg80211_mlme_deauth(rdev, wdev->netdev,
+				   wdev->conn->params.bssid,
+				   NULL, 0, reason, false);
+ out:
+	cfg80211_sme_free(wdev);
+	return err;
+}
+
+/*
+ * code shared for in-device and software SME
+ */
+
+static bool cfg80211_is_all_idle(void)
+{
+	struct cfg80211_registered_device *rdev;
+	struct wireless_dev *wdev;
+	bool is_all_idle = true;
+
+	/*
+	 * All devices must be idle as otherwise if you are actively
+	 * scanning some new beacon hints could be learned and would
+	 * count as new regulatory hints.
+	 */
+	list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
+		list_for_each_entry(wdev, &rdev->wdev_list, list) {
+			wdev_lock(wdev);
+			if (wdev->conn || wdev->current_bss)
+				is_all_idle = false;
+			wdev_unlock(wdev);
+		}
+	}
+
+	return is_all_idle;
+}
+
+static void disconnect_work(struct work_struct *work)
+{
+	rtnl_lock();
+	if (cfg80211_is_all_idle())
+		regulatory_hint_disconnect();
+	rtnl_unlock();
+}
+
+static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
+
+
+/*
+ * API calls for drivers implementing connect/disconnect and
+ * SME event handling
+ */
+
+/* This method must consume bss one way or another */
+void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
+			       const u8 *req_ie, size_t req_ie_len,
+			       const u8 *resp_ie, size_t resp_ie_len,
+			       u16 status, bool wextev,
+			       struct cfg80211_bss *bss)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	const u8 *country_ie;
+#ifdef CONFIG_CFG80211_WEXT
+	union iwreq_data wrqu;
+#endif
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
+		    wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) {
+		cfg80211_put_bss(wdev->wiphy, bss);
+		return;
+	}
+
+	nl80211_send_connect_result(wiphy_to_rdev(wdev->wiphy), dev,
+				    bssid, req_ie, req_ie_len,
+				    resp_ie, resp_ie_len,
+				    status, GFP_KERNEL);
+
+#ifdef CONFIG_CFG80211_WEXT
+	if (wextev) {
+		if (req_ie && status == WLAN_STATUS_SUCCESS) {
+			memset(&wrqu, 0, sizeof(wrqu));
+			wrqu.data.length = req_ie_len;
+			wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, req_ie);
+		}
+
+		if (resp_ie && status == WLAN_STATUS_SUCCESS) {
+			memset(&wrqu, 0, sizeof(wrqu));
+			wrqu.data.length = resp_ie_len;
+			wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie);
+		}
+
+		memset(&wrqu, 0, sizeof(wrqu));
+		wrqu.ap_addr.sa_family = ARPHRD_ETHER;
+		if (bssid && status == WLAN_STATUS_SUCCESS) {
+			memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
+			memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
+			wdev->wext.prev_bssid_valid = true;
+		}
+		wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
+	}
+#endif
+
+	if (!bss && (status == WLAN_STATUS_SUCCESS)) {
+		WARN_ON_ONCE(!wiphy_to_rdev(wdev->wiphy)->ops->connect);
+		bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid,
+				       wdev->ssid, wdev->ssid_len,
+				       WLAN_CAPABILITY_ESS,
+				       WLAN_CAPABILITY_ESS);
+		if (bss)
+			cfg80211_hold_bss(bss_from_pub(bss));
+	}
+
+	if (wdev->current_bss) {
+		cfg80211_unhold_bss(wdev->current_bss);
+		cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
+		wdev->current_bss = NULL;
+	}
+
+	if (status != WLAN_STATUS_SUCCESS) {
+		kzfree(wdev->connect_keys);
+		wdev->connect_keys = NULL;
+		wdev->ssid_len = 0;
+		if (bss) {
+			cfg80211_unhold_bss(bss_from_pub(bss));
+			cfg80211_put_bss(wdev->wiphy, bss);
+		}
+		cfg80211_sme_free(wdev);
+		return;
+	}
+
+	if (WARN_ON(!bss))
+		return;
+
+	wdev->current_bss = bss_from_pub(bss);
+
+	cfg80211_upload_connect_keys(wdev);
+
+	rcu_read_lock();
+	country_ie = ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY);
+	if (!country_ie) {
+		rcu_read_unlock();
+		return;
+	}
+
+	country_ie = kmemdup(country_ie, 2 + country_ie[1], GFP_ATOMIC);
+	rcu_read_unlock();
+
+	if (!country_ie)
+		return;
+
+	/*
+	 * ieee80211_bss_get_ie() ensures we can access:
+	 * - country_ie + 2, the start of the country ie data, and
+	 * - and country_ie[1] which is the IE length
+	 */
+	regulatory_hint_country_ie(wdev->wiphy, bss->channel->band,
+				   country_ie + 2, country_ie[1]);
+	kfree(country_ie);
+}
+
+void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
+			     const u8 *req_ie, size_t req_ie_len,
+			     const u8 *resp_ie, size_t resp_ie_len,
+			     u16 status, gfp_t gfp)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+	struct cfg80211_event *ev;
+	unsigned long flags;
+
+	ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
+	if (!ev)
+		return;
+
+	ev->type = EVENT_CONNECT_RESULT;
+	if (bssid)
+		memcpy(ev->cr.bssid, bssid, ETH_ALEN);
+	if (req_ie_len) {
+		ev->cr.req_ie = ((u8 *)ev) + sizeof(*ev);
+		ev->cr.req_ie_len = req_ie_len;
+		memcpy((void *)ev->cr.req_ie, req_ie, req_ie_len);
+	}
+	if (resp_ie_len) {
+		ev->cr.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
+		ev->cr.resp_ie_len = resp_ie_len;
+		memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len);
+	}
+	ev->cr.status = status;
+
+	spin_lock_irqsave(&wdev->event_lock, flags);
+	list_add_tail(&ev->list, &wdev->event_list);
+	spin_unlock_irqrestore(&wdev->event_lock, flags);
+	queue_work(cfg80211_wq, &rdev->event_work);
+}
+EXPORT_SYMBOL(cfg80211_connect_result);
+
+/* Consumes bss object one way or another */
+void __cfg80211_roamed(struct wireless_dev *wdev,
+		       struct cfg80211_bss *bss,
+		       const u8 *req_ie, size_t req_ie_len,
+		       const u8 *resp_ie, size_t resp_ie_len)
+{
+#ifdef CONFIG_CFG80211_WEXT
+	union iwreq_data wrqu;
+#endif
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
+		    wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
+		goto out;
+
+	if (WARN_ON(!wdev->current_bss))
+		goto out;
+
+	cfg80211_unhold_bss(wdev->current_bss);
+	cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
+	wdev->current_bss = NULL;
+
+	cfg80211_hold_bss(bss_from_pub(bss));
+	wdev->current_bss = bss_from_pub(bss);
+
+	nl80211_send_roamed(wiphy_to_rdev(wdev->wiphy),
+			    wdev->netdev, bss->bssid,
+			    req_ie, req_ie_len, resp_ie, resp_ie_len,
+			    GFP_KERNEL);
+
+#ifdef CONFIG_CFG80211_WEXT
+	if (req_ie) {
+		memset(&wrqu, 0, sizeof(wrqu));
+		wrqu.data.length = req_ie_len;
+		wireless_send_event(wdev->netdev, IWEVASSOCREQIE,
+				    &wrqu, req_ie);
+	}
+
+	if (resp_ie) {
+		memset(&wrqu, 0, sizeof(wrqu));
+		wrqu.data.length = resp_ie_len;
+		wireless_send_event(wdev->netdev, IWEVASSOCRESPIE,
+				    &wrqu, resp_ie);
+	}
+
+	memset(&wrqu, 0, sizeof(wrqu));
+	wrqu.ap_addr.sa_family = ARPHRD_ETHER;
+	memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN);
+	memcpy(wdev->wext.prev_bssid, bss->bssid, ETH_ALEN);
+	wdev->wext.prev_bssid_valid = true;
+	wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL);
+#endif
+
+	return;
+out:
+	cfg80211_put_bss(wdev->wiphy, bss);
+}
+
+void cfg80211_roamed(struct net_device *dev,
+		     struct ieee80211_channel *channel,
+		     const u8 *bssid,
+		     const u8 *req_ie, size_t req_ie_len,
+		     const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_bss *bss;
+
+	bss = cfg80211_get_bss(wdev->wiphy, channel, bssid, wdev->ssid,
+			       wdev->ssid_len, WLAN_CAPABILITY_ESS,
+			       WLAN_CAPABILITY_ESS);
+	if (WARN_ON(!bss))
+		return;
+
+	cfg80211_roamed_bss(dev, bss, req_ie, req_ie_len, resp_ie,
+			    resp_ie_len, gfp);
+}
+EXPORT_SYMBOL(cfg80211_roamed);
+
+/* Consumes bss object one way or another */
+void cfg80211_roamed_bss(struct net_device *dev,
+			 struct cfg80211_bss *bss, const u8 *req_ie,
+			 size_t req_ie_len, const u8 *resp_ie,
+			 size_t resp_ie_len, gfp_t gfp)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+	struct cfg80211_event *ev;
+	unsigned long flags;
+
+	if (WARN_ON(!bss))
+		return;
+
+	ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
+	if (!ev) {
+		cfg80211_put_bss(wdev->wiphy, bss);
+		return;
+	}
+
+	ev->type = EVENT_ROAMED;
+	ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev);
+	ev->rm.req_ie_len = req_ie_len;
+	memcpy((void *)ev->rm.req_ie, req_ie, req_ie_len);
+	ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
+	ev->rm.resp_ie_len = resp_ie_len;
+	memcpy((void *)ev->rm.resp_ie, resp_ie, resp_ie_len);
+	ev->rm.bss = bss;
+
+	spin_lock_irqsave(&wdev->event_lock, flags);
+	list_add_tail(&ev->list, &wdev->event_list);
+	spin_unlock_irqrestore(&wdev->event_lock, flags);
+	queue_work(cfg80211_wq, &rdev->event_work);
+}
+EXPORT_SYMBOL(cfg80211_roamed_bss);
+
+void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
+			     size_t ie_len, u16 reason, bool from_ap)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+	int i;
+#ifdef CONFIG_CFG80211_WEXT
+	union iwreq_data wrqu;
+#endif
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
+		    wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
+		return;
+
+	if (wdev->current_bss) {
+		cfg80211_unhold_bss(wdev->current_bss);
+		cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
+	}
+
+	wdev->current_bss = NULL;
+	wdev->ssid_len = 0;
+
+	nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
+
+	/*
+	 * Delete all the keys ... pairwise keys can't really
+	 * exist any more anyway, but default keys might.
+	 */
+	if (rdev->ops->del_key)
+		for (i = 0; i < 6; i++)
+			rdev_del_key(rdev, dev, i, false, NULL);
+
+	rdev_set_qos_map(rdev, dev, NULL);
+
+#ifdef CONFIG_CFG80211_WEXT
+	memset(&wrqu, 0, sizeof(wrqu));
+	wrqu.ap_addr.sa_family = ARPHRD_ETHER;
+	wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
+	wdev->wext.connect.ssid_len = 0;
+#endif
+
+	schedule_work(&cfg80211_disconnect_work);
+}
+
+void cfg80211_disconnected(struct net_device *dev, u16 reason,
+			   const u8 *ie, size_t ie_len, gfp_t gfp)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+	struct cfg80211_event *ev;
+	unsigned long flags;
+
+	ev = kzalloc(sizeof(*ev) + ie_len, gfp);
+	if (!ev)
+		return;
+
+	ev->type = EVENT_DISCONNECTED;
+	ev->dc.ie = ((u8 *)ev) + sizeof(*ev);
+	ev->dc.ie_len = ie_len;
+	memcpy((void *)ev->dc.ie, ie, ie_len);
+	ev->dc.reason = reason;
+
+	spin_lock_irqsave(&wdev->event_lock, flags);
+	list_add_tail(&ev->list, &wdev->event_list);
+	spin_unlock_irqrestore(&wdev->event_lock, flags);
+	queue_work(cfg80211_wq, &rdev->event_work);
+}
+EXPORT_SYMBOL(cfg80211_disconnected);
+
+/*
+ * API calls for nl80211/wext compatibility code
+ */
+int cfg80211_connect(struct cfg80211_registered_device *rdev,
+		     struct net_device *dev,
+		     struct cfg80211_connect_params *connect,
+		     struct cfg80211_cached_keys *connkeys,
+		     const u8 *prev_bssid)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	int err;
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (WARN_ON(wdev->connect_keys)) {
+		kzfree(wdev->connect_keys);
+		wdev->connect_keys = NULL;
+	}
+
+	cfg80211_oper_and_ht_capa(&connect->ht_capa_mask,
+				  rdev->wiphy.ht_capa_mod_mask);
+
+	if (connkeys && connkeys->def >= 0) {
+		int idx;
+		u32 cipher;
+
+		idx = connkeys->def;
+		cipher = connkeys->params[idx].cipher;
+		/* If given a WEP key we may need it for shared key auth */
+		if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
+		    cipher == WLAN_CIPHER_SUITE_WEP104) {
+			connect->key_idx = idx;
+			connect->key = connkeys->params[idx].key;
+			connect->key_len = connkeys->params[idx].key_len;
+
+			/*
+			 * If ciphers are not set (e.g. when going through
+			 * iwconfig), we have to set them appropriately here.
+			 */
+			if (connect->crypto.cipher_group == 0)
+				connect->crypto.cipher_group = cipher;
+
+			if (connect->crypto.n_ciphers_pairwise == 0) {
+				connect->crypto.n_ciphers_pairwise = 1;
+				connect->crypto.ciphers_pairwise[0] = cipher;
+			}
+		}
+	}
+
+	wdev->connect_keys = connkeys;
+	memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
+	wdev->ssid_len = connect->ssid_len;
+
+	if (!rdev->ops->connect)
+		err = cfg80211_sme_connect(wdev, connect, prev_bssid);
+	else
+		err = rdev_connect(rdev, dev, connect);
+
+	if (err) {
+		wdev->connect_keys = NULL;
+		wdev->ssid_len = 0;
+		return err;
+	}
+
+	return 0;
+}
+
+int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
+			struct net_device *dev, u16 reason, bool wextev)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	int err = 0;
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	kzfree(wdev->connect_keys);
+	wdev->connect_keys = NULL;
+
+	if (wdev->conn)
+		err = cfg80211_sme_disconnect(wdev, reason);
+	else if (!rdev->ops->disconnect)
+		cfg80211_mlme_down(rdev, dev);
+	else if (wdev->current_bss)
+		err = rdev_disconnect(rdev, dev, reason);
+
+	return err;
+}

net/wireless/sysfs.c

@@ -0,0 +1,170 @@
+/*
+ * This file provides /sys/class/ieee80211/<wiphy name>/
+ * and some default attributes.
+ *
+ * Copyright 2005-2006	Jiri Benc <jbenc@suse.cz>
+ * Copyright 2006	Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This file is GPLv2 as found in COPYING.
+ */
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/nl80211.h>
+#include <linux/rtnetlink.h>
+#include <net/cfg80211.h>
+#include "sysfs.h"
+#include "core.h"
+#include "rdev-ops.h"
+
+static inline struct cfg80211_registered_device *dev_to_rdev(
+	struct device *dev)
+{
+	return container_of(dev, struct cfg80211_registered_device, wiphy.dev);
+}
+
+#define SHOW_FMT(name, fmt, member)					\
+static ssize_t name ## _show(struct device *dev,			\
+			      struct device_attribute *attr,		\
+			      char *buf)				\
+{									\
+	return sprintf(buf, fmt "\n", dev_to_rdev(dev)->member);	\
+}									\
+static DEVICE_ATTR_RO(name)
+
+SHOW_FMT(index, "%d", wiphy_idx);
+SHOW_FMT(macaddress, "%pM", wiphy.perm_addr);
+SHOW_FMT(address_mask, "%pM", wiphy.addr_mask);
+
+static ssize_t name_show(struct device *dev,
+			 struct device_attribute *attr,
+			 char *buf) {
+	struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
+	return sprintf(buf, "%s\n", dev_name(&wiphy->dev));
+}
+static DEVICE_ATTR_RO(name);
+
+static ssize_t addresses_show(struct device *dev,
+			      struct device_attribute *attr,
+			      char *buf)
+{
+	struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
+	char *start = buf;
+	int i;
+
+	if (!wiphy->addresses)
+		return sprintf(buf, "%pM\n", wiphy->perm_addr);
+
+	for (i = 0; i < wiphy->n_addresses; i++)
+		buf += sprintf(buf, "%pM\n", &wiphy->addresses[i].addr);
+
+	return buf - start;
+}
+static DEVICE_ATTR_RO(addresses);
+
+static struct attribute *ieee80211_attrs[] = {
+	&dev_attr_index.attr,
+	&dev_attr_macaddress.attr,
+	&dev_attr_address_mask.attr,
+	&dev_attr_addresses.attr,
+	&dev_attr_name.attr,
+	NULL,
+};
+ATTRIBUTE_GROUPS(ieee80211);
+
+static void wiphy_dev_release(struct device *dev)
+{
+	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
+
+	cfg80211_dev_free(rdev);
+}
+
+static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+	/* TODO, we probably need stuff here */
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static void cfg80211_leave_all(struct cfg80211_registered_device *rdev)
+{
+	struct wireless_dev *wdev;
+
+	list_for_each_entry(wdev, &rdev->wdev_list, list)
+		cfg80211_leave(rdev, wdev);
+}
+
+static int wiphy_suspend(struct device *dev, pm_message_t state)
+{
+	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
+	int ret = 0;
+
+	rdev->suspend_at = get_seconds();
+
+	rtnl_lock();
+	if (rdev->wiphy.registered) {
+		if (!rdev->wiphy.wowlan_config)
+			cfg80211_leave_all(rdev);
+		if (rdev->ops->suspend)
+			ret = rdev_suspend(rdev, rdev->wiphy.wowlan_config);
+		if (ret == 1) {
+			/* Driver refuse to configure wowlan */
+			cfg80211_leave_all(rdev);
+			ret = rdev_suspend(rdev, NULL);
+		}
+	}
+	rtnl_unlock();
+
+	return ret;
+}
+
+static int wiphy_resume(struct device *dev)
+{
+	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
+	int ret = 0;
+
+	/* Age scan results with time spent in suspend */
+	cfg80211_bss_age(rdev, get_seconds() - rdev->suspend_at);
+
+	if (rdev->ops->resume) {
+		rtnl_lock();
+		if (rdev->wiphy.registered)
+			ret = rdev_resume(rdev);
+		rtnl_unlock();
+	}
+
+	return ret;
+}
+#endif
+
+static const void *wiphy_namespace(struct device *d)
+{
+	struct wiphy *wiphy = container_of(d, struct wiphy, dev);
+
+	return wiphy_net(wiphy);
+}
+
+struct class ieee80211_class = {
+	.name = "ieee80211",
+	.owner = THIS_MODULE,
+	.dev_release = wiphy_dev_release,
+	.dev_groups = ieee80211_groups,
+	.dev_uevent = wiphy_uevent,
+#ifdef CONFIG_PM
+	.suspend = wiphy_suspend,
+	.resume = wiphy_resume,
+#endif
+	.ns_type = &net_ns_type_operations,
+	.namespace = wiphy_namespace,
+};
+
+int wiphy_sysfs_init(void)
+{
+	return class_register(&ieee80211_class);
+}
+
+void wiphy_sysfs_exit(void)
+{
+	class_unregister(&ieee80211_class);
+}

net/wireless/sysfs.h

@@ -0,0 +1,9 @@
+#ifndef __WIRELESS_SYSFS_H
+#define __WIRELESS_SYSFS_H
+
+int wiphy_sysfs_init(void);
+void wiphy_sysfs_exit(void);
+
+extern struct class ieee80211_class;
+
+#endif /* __WIRELESS_SYSFS_H */

net/wireless/trace.c

@@ -0,0 +1,7 @@
+#include <linux/module.h>
+
+#ifndef __CHECKER__
+#define CREATE_TRACE_POINTS
+#include "trace.h"
+
+#endif

net/wireless/wext-compat.h

@@ -0,0 +1,57 @@
+#ifndef __WEXT_COMPAT
+#define __WEXT_COMPAT
+
+#include <net/iw_handler.h>
+#include <linux/wireless.h>
+
+int cfg80211_ibss_wext_siwfreq(struct net_device *dev,
+			       struct iw_request_info *info,
+			       struct iw_freq *freq, char *extra);
+int cfg80211_ibss_wext_giwfreq(struct net_device *dev,
+			       struct iw_request_info *info,
+			       struct iw_freq *freq, char *extra);
+int cfg80211_ibss_wext_siwap(struct net_device *dev,
+			     struct iw_request_info *info,
+			     struct sockaddr *ap_addr, char *extra);
+int cfg80211_ibss_wext_giwap(struct net_device *dev,
+			     struct iw_request_info *info,
+			     struct sockaddr *ap_addr, char *extra);
+int cfg80211_ibss_wext_siwessid(struct net_device *dev,
+				struct iw_request_info *info,
+				struct iw_point *data, char *ssid);
+int cfg80211_ibss_wext_giwessid(struct net_device *dev,
+				struct iw_request_info *info,
+				struct iw_point *data, char *ssid);
+
+int cfg80211_mgd_wext_siwfreq(struct net_device *dev,
+			      struct iw_request_info *info,
+			      struct iw_freq *freq, char *extra);
+int cfg80211_mgd_wext_giwfreq(struct net_device *dev,
+			      struct iw_request_info *info,
+			      struct iw_freq *freq, char *extra);
+int cfg80211_mgd_wext_siwap(struct net_device *dev,
+			    struct iw_request_info *info,
+			    struct sockaddr *ap_addr, char *extra);
+int cfg80211_mgd_wext_giwap(struct net_device *dev,
+			    struct iw_request_info *info,
+			    struct sockaddr *ap_addr, char *extra);
+int cfg80211_mgd_wext_siwessid(struct net_device *dev,
+			       struct iw_request_info *info,
+			       struct iw_point *data, char *ssid);
+int cfg80211_mgd_wext_giwessid(struct net_device *dev,
+			       struct iw_request_info *info,
+			       struct iw_point *data, char *ssid);
+
+int cfg80211_wext_siwmlme(struct net_device *dev,
+			  struct iw_request_info *info,
+			  struct iw_point *data, char *extra);
+int cfg80211_wext_siwgenie(struct net_device *dev,
+			   struct iw_request_info *info,
+			   struct iw_point *data, char *extra);
+
+
+int cfg80211_wext_freq(struct iw_freq *freq);
+
+
+extern const struct iw_handler_def cfg80211_wext_handler;
+#endif /* __WEXT_COMPAT */

net/wireless/wext-priv.c

@@ -0,0 +1,249 @@
+/*
+ * This file implement the Wireless Extensions priv API.
+ *
+ * Authors :	Jean Tourrilhes - HPL - <jt@hpl.hp.com>
+ * Copyright (c) 1997-2007 Jean Tourrilhes, All Rights Reserved.
+ * Copyright	2009 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * (As all part of the Linux kernel, this file is GPL)
+ */
+#include <linux/slab.h>
+#include <linux/wireless.h>
+#include <linux/netdevice.h>
+#include <net/iw_handler.h>
+#include <net/wext.h>
+
+int iw_handler_get_private(struct net_device *		dev,
+			   struct iw_request_info *	info,
+			   union iwreq_data *		wrqu,
+			   char *			extra)
+{
+	/* Check if the driver has something to export */
+	if ((dev->wireless_handlers->num_private_args == 0) ||
+	   (dev->wireless_handlers->private_args == NULL))
+		return -EOPNOTSUPP;
+
+	/* Check if there is enough buffer up there */
+	if (wrqu->data.length < dev->wireless_handlers->num_private_args) {
+		/* User space can't know in advance how large the buffer
+		 * needs to be. Give it a hint, so that we can support
+		 * any size buffer we want somewhat efficiently... */
+		wrqu->data.length = dev->wireless_handlers->num_private_args;
+		return -E2BIG;
+	}
+
+	/* Set the number of available ioctls. */
+	wrqu->data.length = dev->wireless_handlers->num_private_args;
+
+	/* Copy structure to the user buffer. */
+	memcpy(extra, dev->wireless_handlers->private_args,
+	       sizeof(struct iw_priv_args) * wrqu->data.length);
+
+	return 0;
+}
+
+/* Size (in bytes) of the various private data types */
+static const char iw_priv_type_size[] = {
+	0,				/* IW_PRIV_TYPE_NONE */
+	1,				/* IW_PRIV_TYPE_BYTE */
+	1,				/* IW_PRIV_TYPE_CHAR */
+	0,				/* Not defined */
+	sizeof(__u32),			/* IW_PRIV_TYPE_INT */
+	sizeof(struct iw_freq),		/* IW_PRIV_TYPE_FLOAT */
+	sizeof(struct sockaddr),	/* IW_PRIV_TYPE_ADDR */
+	0,				/* Not defined */
+};
+
+static int get_priv_size(__u16 args)
+{
+	int	num = args & IW_PRIV_SIZE_MASK;
+	int	type = (args & IW_PRIV_TYPE_MASK) >> 12;
+
+	return num * iw_priv_type_size[type];
+}
+
+static int adjust_priv_size(__u16 args, struct iw_point *iwp)
+{
+	int	num = iwp->length;
+	int	max = args & IW_PRIV_SIZE_MASK;
+	int	type = (args & IW_PRIV_TYPE_MASK) >> 12;
+
+	/* Make sure the driver doesn't goof up */
+	if (max < num)
+		num = max;
+
+	return num * iw_priv_type_size[type];
+}
+
+/*
+ * Wrapper to call a private Wireless Extension handler.
+ * We do various checks and also take care of moving data between
+ * user space and kernel space.
+ * It's not as nice and slimline as the standard wrapper. The cause
+ * is struct iw_priv_args, which was not really designed for the
+ * job we are going here.
+ *
+ * IMPORTANT : This function prevent to set and get data on the same
+ * IOCTL and enforce the SET/GET convention. Not doing it would be
+ * far too hairy...
+ * If you need to set and get data at the same time, please don't use
+ * a iw_handler but process it in your ioctl handler (i.e. use the
+ * old driver API).
+ */
+static int get_priv_descr_and_size(struct net_device *dev, unsigned int cmd,
+				   const struct iw_priv_args **descrp)
+{
+	const struct iw_priv_args *descr;
+	int i, extra_size;
+
+	descr = NULL;
+	for (i = 0; i < dev->wireless_handlers->num_private_args; i++) {
+		if (cmd == dev->wireless_handlers->private_args[i].cmd) {
+			descr = &dev->wireless_handlers->private_args[i];
+			break;
+		}
+	}
+
+	extra_size = 0;
+	if (descr) {
+		if (IW_IS_SET(cmd)) {
+			int	offset = 0;	/* For sub-ioctls */
+			/* Check for sub-ioctl handler */
+			if (descr->name[0] == '\0')
+				/* Reserve one int for sub-ioctl index */
+				offset = sizeof(__u32);
+
+			/* Size of set arguments */
+			extra_size = get_priv_size(descr->set_args);
+
+			/* Does it fits in iwr ? */
+			if ((descr->set_args & IW_PRIV_SIZE_FIXED) &&
+			   ((extra_size + offset) <= IFNAMSIZ))
+				extra_size = 0;
+		} else {
+			/* Size of get arguments */
+			extra_size = get_priv_size(descr->get_args);
+
+			/* Does it fits in iwr ? */
+			if ((descr->get_args & IW_PRIV_SIZE_FIXED) &&
+			   (extra_size <= IFNAMSIZ))
+				extra_size = 0;
+		}
+	}
+	*descrp = descr;
+	return extra_size;
+}
+
+static int ioctl_private_iw_point(struct iw_point *iwp, unsigned int cmd,
+				  const struct iw_priv_args *descr,
+				  iw_handler handler, struct net_device *dev,
+				  struct iw_request_info *info, int extra_size)
+{
+	char *extra;
+	int err;
+
+	/* Check what user space is giving us */
+	if (IW_IS_SET(cmd)) {
+		if (!iwp->pointer && iwp->length != 0)
+			return -EFAULT;
+
+		if (iwp->length > (descr->set_args & IW_PRIV_SIZE_MASK))
+			return -E2BIG;
+	} else if (!iwp->pointer)
+		return -EFAULT;
+
+	extra = kzalloc(extra_size, GFP_KERNEL);
+	if (!extra)
+		return -ENOMEM;
+
+	/* If it is a SET, get all the extra data in here */
+	if (IW_IS_SET(cmd) && (iwp->length != 0)) {
+		if (copy_from_user(extra, iwp->pointer, extra_size)) {
+			err = -EFAULT;
+			goto out;
+		}
+	}
+
+	/* Call the handler */
+	err = handler(dev, info, (union iwreq_data *) iwp, extra);
+
+	/* If we have something to return to the user */
+	if (!err && IW_IS_GET(cmd)) {
+		/* Adjust for the actual length if it's variable,
+		 * avoid leaking kernel bits outside.
+		 */
+		if (!(descr->get_args & IW_PRIV_SIZE_FIXED))
+			extra_size = adjust_priv_size(descr->get_args, iwp);
+
+		if (copy_to_user(iwp->pointer, extra, extra_size))
+			err =  -EFAULT;
+	}
+
+out:
+	kfree(extra);
+	return err;
+}
+
+int ioctl_private_call(struct net_device *dev, struct iwreq *iwr,
+		       unsigned int cmd, struct iw_request_info *info,
+		       iw_handler handler)
+{
+	int extra_size = 0, ret = -EINVAL;
+	const struct iw_priv_args *descr;
+
+	extra_size = get_priv_descr_and_size(dev, cmd, &descr);
+
+	/* Check if we have a pointer to user space data or not. */
+	if (extra_size == 0) {
+		/* No extra arguments. Trivial to handle */
+		ret = handler(dev, info, &(iwr->u), (char *) &(iwr->u));
+	} else {
+		ret = ioctl_private_iw_point(&iwr->u.data, cmd, descr,
+					     handler, dev, info, extra_size);
+	}
+
+	/* Call commit handler if needed and defined */
+	if (ret == -EIWCOMMIT)
+		ret = call_commit_handler(dev);
+
+	return ret;
+}
+
+#ifdef CONFIG_COMPAT
+int compat_private_call(struct net_device *dev, struct iwreq *iwr,
+			unsigned int cmd, struct iw_request_info *info,
+			iw_handler handler)
+{
+	const struct iw_priv_args *descr;
+	int ret, extra_size;
+
+	extra_size = get_priv_descr_and_size(dev, cmd, &descr);
+
+	/* Check if we have a pointer to user space data or not. */
+	if (extra_size == 0) {
+		/* No extra arguments. Trivial to handle */
+		ret = handler(dev, info, &(iwr->u), (char *) &(iwr->u));
+	} else {
+		struct compat_iw_point *iwp_compat;
+		struct iw_point iwp;
+
+		iwp_compat = (struct compat_iw_point *) &iwr->u.data;
+		iwp.pointer = compat_ptr(iwp_compat->pointer);
+		iwp.length = iwp_compat->length;
+		iwp.flags = iwp_compat->flags;
+
+		ret = ioctl_private_iw_point(&iwp, cmd, descr,
+					     handler, dev, info, extra_size);
+
+		iwp_compat->pointer = ptr_to_compat(iwp.pointer);
+		iwp_compat->length = iwp.length;
+		iwp_compat->flags = iwp.flags;
+	}
+
+	/* Call commit handler if needed and defined */
+	if (ret == -EIWCOMMIT)
+		ret = call_commit_handler(dev);
+
+	return ret;
+}
+#endif

net/wireless/wext-proc.c

@@ -0,0 +1,156 @@
+/*
+ * This file implement the Wireless Extensions proc API.
+ *
+ * Authors :	Jean Tourrilhes - HPL - <jt@hpl.hp.com>
+ * Copyright (c) 1997-2007 Jean Tourrilhes, All Rights Reserved.
+ *
+ * (As all part of the Linux kernel, this file is GPL)
+ */
+
+/*
+ * The /proc/net/wireless file is a human readable user-space interface
+ * exporting various wireless specific statistics from the wireless devices.
+ * This is the most popular part of the Wireless Extensions ;-)
+ *
+ * This interface is a pure clone of /proc/net/dev (in net/core/dev.c).
+ * The content of the file is basically the content of "struct iw_statistics".
+ */
+
+#include <linux/module.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/wireless.h>
+#include <linux/netdevice.h>
+#include <linux/rtnetlink.h>
+#include <net/iw_handler.h>
+#include <net/wext.h>
+
+
+static void wireless_seq_printf_stats(struct seq_file *seq,
+				      struct net_device *dev)
+{
+	/* Get stats from the driver */
+	struct iw_statistics *stats = get_wireless_stats(dev);
+	static struct iw_statistics nullstats = {};
+
+	/* show device if it's wireless regardless of current stats */
+	if (!stats) {
+#ifdef CONFIG_WIRELESS_EXT
+		if (dev->wireless_handlers)
+			stats = &nullstats;
+#endif
+#ifdef CONFIG_CFG80211
+		if (dev->ieee80211_ptr)
+			stats = &nullstats;
+#endif
+	}
+
+	if (stats) {
+		seq_printf(seq, "%6s: %04x  %3d%c  %3d%c  %3d%c  %6d %6d %6d "
+				"%6d %6d   %6d\n",
+			   dev->name, stats->status, stats->qual.qual,
+			   stats->qual.updated & IW_QUAL_QUAL_UPDATED
+			   ? '.' : ' ',
+			   ((__s32) stats->qual.level) -
+			   ((stats->qual.updated & IW_QUAL_DBM) ? 0x100 : 0),
+			   stats->qual.updated & IW_QUAL_LEVEL_UPDATED
+			   ? '.' : ' ',
+			   ((__s32) stats->qual.noise) -
+			   ((stats->qual.updated & IW_QUAL_DBM) ? 0x100 : 0),
+			   stats->qual.updated & IW_QUAL_NOISE_UPDATED
+			   ? '.' : ' ',
+			   stats->discard.nwid, stats->discard.code,
+			   stats->discard.fragment, stats->discard.retries,
+			   stats->discard.misc, stats->miss.beacon);
+
+		if (stats != &nullstats)
+			stats->qual.updated &= ~IW_QUAL_ALL_UPDATED;
+	}
+}
+
+/* ---------------------------------------------------------------- */
+/*
+ * Print info for /proc/net/wireless (print all entries)
+ */
+static int wireless_dev_seq_show(struct seq_file *seq, void *v)
+{
+	might_sleep();
+
+	if (v == SEQ_START_TOKEN)
+		seq_printf(seq, "Inter-| sta-|   Quality        |   Discarded "
+				"packets               | Missed | WE\n"
+				" face | tus | link level noise |  nwid  "
+				"crypt   frag  retry   misc | beacon | %d\n",
+			   WIRELESS_EXT);
+	else
+		wireless_seq_printf_stats(seq, v);
+	return 0;
+}
+
+static void *wireless_dev_seq_start(struct seq_file *seq, loff_t *pos)
+{
+	struct net *net = seq_file_net(seq);
+	loff_t off;
+	struct net_device *dev;
+
+	rtnl_lock();
+	if (!*pos)
+		return SEQ_START_TOKEN;
+
+	off = 1;
+	for_each_netdev(net, dev)
+		if (off++ == *pos)
+			return dev;
+	return NULL;
+}
+
+static void *wireless_dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct net *net = seq_file_net(seq);
+
+	++*pos;
+
+	return v == SEQ_START_TOKEN ?
+		first_net_device(net) : next_net_device(v);
+}
+
+static void wireless_dev_seq_stop(struct seq_file *seq, void *v)
+{
+	rtnl_unlock();
+}
+
+static const struct seq_operations wireless_seq_ops = {
+	.start = wireless_dev_seq_start,
+	.next  = wireless_dev_seq_next,
+	.stop  = wireless_dev_seq_stop,
+	.show  = wireless_dev_seq_show,
+};
+
+static int seq_open_wireless(struct inode *inode, struct file *file)
+{
+	return seq_open_net(inode, file, &wireless_seq_ops,
+			    sizeof(struct seq_net_private));
+}
+
+static const struct file_operations wireless_seq_fops = {
+	.owner	 = THIS_MODULE,
+	.open    = seq_open_wireless,
+	.read    = seq_read,
+	.llseek  = seq_lseek,
+	.release = seq_release_net,
+};
+
+int __net_init wext_proc_init(struct net *net)
+{
+	/* Create /proc/net/wireless entry */
+	if (!proc_create("wireless", S_IRUGO, net->proc_net,
+			 &wireless_seq_fops))
+		return -ENOMEM;
+
+	return 0;
+}
+
+void __net_exit wext_proc_exit(struct net *net)
+{
+	remove_proc_entry("wireless", net->proc_net);
+}

net/wireless/wext-sme.c

@@ -0,0 +1,414 @@
+/*
+ * cfg80211 wext compat for managed mode.
+ *
+ * Copyright 2009	Johannes Berg <johannes@sipsolutions.net>
+ * Copyright (C) 2009   Intel Corporation. All rights reserved.
+ */
+
+#include <linux/export.h>
+#include <linux/etherdevice.h>
+#include <linux/if_arp.h>
+#include <linux/slab.h>
+#include <net/cfg80211.h>
+#include <net/cfg80211-wext.h>
+#include "wext-compat.h"
+#include "nl80211.h"
+
+int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
+			      struct wireless_dev *wdev)
+{
+	struct cfg80211_cached_keys *ck = NULL;
+	const u8 *prev_bssid = NULL;
+	int err, i;
+
+	ASSERT_RTNL();
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (!netif_running(wdev->netdev))
+		return 0;
+
+	wdev->wext.connect.ie = wdev->wext.ie;
+	wdev->wext.connect.ie_len = wdev->wext.ie_len;
+
+	/* Use default background scan period */
+	wdev->wext.connect.bg_scan_period = -1;
+
+	if (wdev->wext.keys) {
+		wdev->wext.keys->def = wdev->wext.default_key;
+		wdev->wext.keys->defmgmt = wdev->wext.default_mgmt_key;
+		if (wdev->wext.default_key != -1)
+			wdev->wext.connect.privacy = true;
+	}
+
+	if (!wdev->wext.connect.ssid_len)
+		return 0;
+
+	if (wdev->wext.keys) {
+		ck = kmemdup(wdev->wext.keys, sizeof(*ck), GFP_KERNEL);
+		if (!ck)
+			return -ENOMEM;
+		for (i = 0; i < 6; i++)
+			ck->params[i].key = ck->data[i];
+	}
+
+	if (wdev->wext.prev_bssid_valid)
+		prev_bssid = wdev->wext.prev_bssid;
+
+	err = cfg80211_connect(rdev, wdev->netdev,
+			       &wdev->wext.connect, ck, prev_bssid);
+	if (err)
+		kzfree(ck);
+
+	return err;
+}
+
+int cfg80211_mgd_wext_siwfreq(struct net_device *dev,
+			      struct iw_request_info *info,
+			      struct iw_freq *wextfreq, char *extra)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+	struct ieee80211_channel *chan = NULL;
+	int err, freq;
+
+	/* call only for station! */
+	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
+		return -EINVAL;
+
+	freq = cfg80211_wext_freq(wextfreq);
+	if (freq < 0)
+		return freq;
+
+	if (freq) {
+		chan = ieee80211_get_channel(wdev->wiphy, freq);
+		if (!chan)
+			return -EINVAL;
+		if (chan->flags & IEEE80211_CHAN_DISABLED)
+			return -EINVAL;
+	}
+
+	wdev_lock(wdev);
+
+	if (wdev->conn) {
+		bool event = true;
+
+		if (wdev->wext.connect.channel == chan) {
+			err = 0;
+			goto out;
+		}
+
+		/* if SSID set, we'll try right again, avoid event */
+		if (wdev->wext.connect.ssid_len)
+			event = false;
+		err = cfg80211_disconnect(rdev, dev,
+					  WLAN_REASON_DEAUTH_LEAVING, event);
+		if (err)
+			goto out;
+	}
+
+
+	wdev->wext.connect.channel = chan;
+
+	/*
+	 * SSID is not set, we just want to switch monitor channel,
+	 * this is really just backward compatibility, if the SSID
+	 * is set then we use the channel to select the BSS to use
+	 * to connect to instead. If we were connected on another
+	 * channel we disconnected above and reconnect below.
+	 */
+	if (chan && !wdev->wext.connect.ssid_len) {
+		struct cfg80211_chan_def chandef = {
+			.width = NL80211_CHAN_WIDTH_20_NOHT,
+			.center_freq1 = freq,
+		};
+
+		chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
+		if (chandef.chan)
+			err = cfg80211_set_monitor_channel(rdev, &chandef);
+		else
+			err = -EINVAL;
+		goto out;
+	}
+
+	err = cfg80211_mgd_wext_connect(rdev, wdev);
+ out:
+	wdev_unlock(wdev);
+	return err;
+}
+
+int cfg80211_mgd_wext_giwfreq(struct net_device *dev,
+			      struct iw_request_info *info,
+			      struct iw_freq *freq, char *extra)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct ieee80211_channel *chan = NULL;
+
+	/* call only for station! */
+	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
+		return -EINVAL;
+
+	wdev_lock(wdev);
+	if (wdev->current_bss)
+		chan = wdev->current_bss->pub.channel;
+	else if (wdev->wext.connect.channel)
+		chan = wdev->wext.connect.channel;
+	wdev_unlock(wdev);
+
+	if (chan) {
+		freq->m = chan->center_freq;
+		freq->e = 6;
+		return 0;
+	}
+
+	/* no channel if not joining */
+	return -EINVAL;
+}
+
+int cfg80211_mgd_wext_siwessid(struct net_device *dev,
+			       struct iw_request_info *info,
+			       struct iw_point *data, char *ssid)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+	size_t len = data->length;
+	int err;
+
+	/* call only for station! */
+	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
+		return -EINVAL;
+
+	if (!data->flags)
+		len = 0;
+
+	/* iwconfig uses nul termination in SSID.. */
+	if (len > 0 && ssid[len - 1] == '\0')
+		len--;
+
+	wdev_lock(wdev);
+
+	err = 0;
+
+	if (wdev->conn) {
+		bool event = true;
+
+		if (wdev->wext.connect.ssid && len &&
+		    len == wdev->wext.connect.ssid_len &&
+		    memcmp(wdev->wext.connect.ssid, ssid, len) == 0)
+			goto out;
+
+		/* if SSID set now, we'll try to connect, avoid event */
+		if (len)
+			event = false;
+		err = cfg80211_disconnect(rdev, dev,
+					  WLAN_REASON_DEAUTH_LEAVING, event);
+		if (err)
+			goto out;
+	}
+
+	wdev->wext.prev_bssid_valid = false;
+	wdev->wext.connect.ssid = wdev->wext.ssid;
+	memcpy(wdev->wext.ssid, ssid, len);
+	wdev->wext.connect.ssid_len = len;
+
+	wdev->wext.connect.crypto.control_port = false;
+	wdev->wext.connect.crypto.control_port_ethertype =
+					cpu_to_be16(ETH_P_PAE);
+
+	err = cfg80211_mgd_wext_connect(rdev, wdev);
+ out:
+	wdev_unlock(wdev);
+	return err;
+}
+
+int cfg80211_mgd_wext_giwessid(struct net_device *dev,
+			       struct iw_request_info *info,
+			       struct iw_point *data, char *ssid)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+
+	/* call only for station! */
+	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
+		return -EINVAL;
+
+	data->flags = 0;
+
+	wdev_lock(wdev);
+	if (wdev->current_bss) {
+		const u8 *ie;
+
+		rcu_read_lock();
+		ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
+					  WLAN_EID_SSID);
+		if (ie) {
+			data->flags = 1;
+			data->length = ie[1];
+			memcpy(ssid, ie + 2, data->length);
+		}
+		rcu_read_unlock();
+	} else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) {
+		data->flags = 1;
+		data->length = wdev->wext.connect.ssid_len;
+		memcpy(ssid, wdev->wext.connect.ssid, data->length);
+	}
+	wdev_unlock(wdev);
+
+	return 0;
+}
+
+int cfg80211_mgd_wext_siwap(struct net_device *dev,
+			    struct iw_request_info *info,
+			    struct sockaddr *ap_addr, char *extra)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+	u8 *bssid = ap_addr->sa_data;
+	int err;
+
+	/* call only for station! */
+	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
+		return -EINVAL;
+
+	if (ap_addr->sa_family != ARPHRD_ETHER)
+		return -EINVAL;
+
+	/* automatic mode */
+	if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid))
+		bssid = NULL;
+
+	wdev_lock(wdev);
+
+	if (wdev->conn) {
+		err = 0;
+		/* both automatic */
+		if (!bssid && !wdev->wext.connect.bssid)
+			goto out;
+
+		/* fixed already - and no change */
+		if (wdev->wext.connect.bssid && bssid &&
+		    ether_addr_equal(bssid, wdev->wext.connect.bssid))
+			goto out;
+
+		err = cfg80211_disconnect(rdev, dev,
+					  WLAN_REASON_DEAUTH_LEAVING, false);
+		if (err)
+			goto out;
+	}
+
+	if (bssid) {
+		memcpy(wdev->wext.bssid, bssid, ETH_ALEN);
+		wdev->wext.connect.bssid = wdev->wext.bssid;
+	} else
+		wdev->wext.connect.bssid = NULL;
+
+	err = cfg80211_mgd_wext_connect(rdev, wdev);
+ out:
+	wdev_unlock(wdev);
+	return err;
+}
+
+int cfg80211_mgd_wext_giwap(struct net_device *dev,
+			    struct iw_request_info *info,
+			    struct sockaddr *ap_addr, char *extra)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+
+	/* call only for station! */
+	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
+		return -EINVAL;
+
+	ap_addr->sa_family = ARPHRD_ETHER;
+
+	wdev_lock(wdev);
+	if (wdev->current_bss)
+		memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN);
+	else
+		memset(ap_addr->sa_data, 0, ETH_ALEN);
+	wdev_unlock(wdev);
+
+	return 0;
+}
+
+int cfg80211_wext_siwgenie(struct net_device *dev,
+			   struct iw_request_info *info,
+			   struct iw_point *data, char *extra)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+	u8 *ie = extra;
+	int ie_len = data->length, err;
+
+	if (wdev->iftype != NL80211_IFTYPE_STATION)
+		return -EOPNOTSUPP;
+
+	if (!ie_len)
+		ie = NULL;
+
+	wdev_lock(wdev);
+
+	/* no change */
+	err = 0;
+	if (wdev->wext.ie_len == ie_len &&
+	    memcmp(wdev->wext.ie, ie, ie_len) == 0)
+		goto out;
+
+	if (ie_len) {
+		ie = kmemdup(extra, ie_len, GFP_KERNEL);
+		if (!ie) {
+			err = -ENOMEM;
+			goto out;
+		}
+	} else
+		ie = NULL;
+
+	kfree(wdev->wext.ie);
+	wdev->wext.ie = ie;
+	wdev->wext.ie_len = ie_len;
+
+	if (wdev->conn) {
+		err = cfg80211_disconnect(rdev, dev,
+					  WLAN_REASON_DEAUTH_LEAVING, false);
+		if (err)
+			goto out;
+	}
+
+	/* userspace better not think we'll reconnect */
+	err = 0;
+ out:
+	wdev_unlock(wdev);
+	return err;
+}
+
+int cfg80211_wext_siwmlme(struct net_device *dev,
+			  struct iw_request_info *info,
+			  struct iw_point *data, char *extra)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct iw_mlme *mlme = (struct iw_mlme *)extra;
+	struct cfg80211_registered_device *rdev;
+	int err;
+
+	if (!wdev)
+		return -EOPNOTSUPP;
+
+	rdev = wiphy_to_rdev(wdev->wiphy);
+
+	if (wdev->iftype != NL80211_IFTYPE_STATION)
+		return -EINVAL;
+
+	if (mlme->addr.sa_family != ARPHRD_ETHER)
+		return -EINVAL;
+
+	wdev_lock(wdev);
+	switch (mlme->cmd) {
+	case IW_MLME_DEAUTH:
+	case IW_MLME_DISASSOC:
+		err = cfg80211_disconnect(rdev, dev, mlme->reason_code, true);
+		break;
+	default:
+		err = -EOPNOTSUPP;
+		break;
+	}
+	wdev_unlock(wdev);
+
+	return err;
+}

net/wireless/wext-spy.c

@@ -0,0 +1,232 @@
+/*
+ * This file implement the Wireless Extensions spy API.
+ *
+ * Authors :	Jean Tourrilhes - HPL - <jt@hpl.hp.com>
+ * Copyright (c) 1997-2007 Jean Tourrilhes, All Rights Reserved.
+ *
+ * (As all part of the Linux kernel, this file is GPL)
+ */
+
+#include <linux/wireless.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/export.h>
+#include <net/iw_handler.h>
+#include <net/arp.h>
+#include <net/wext.h>
+
+static inline struct iw_spy_data *get_spydata(struct net_device *dev)
+{
+	/* This is the new way */
+	if (dev->wireless_data)
+		return dev->wireless_data->spy_data;
+	return NULL;
+}
+
+int iw_handler_set_spy(struct net_device *	dev,
+		       struct iw_request_info *	info,
+		       union iwreq_data *	wrqu,
+		       char *			extra)
+{
+	struct iw_spy_data *	spydata = get_spydata(dev);
+	struct sockaddr *	address = (struct sockaddr *) extra;
+
+	/* Make sure driver is not buggy or using the old API */
+	if (!spydata)
+		return -EOPNOTSUPP;
+
+	/* Disable spy collection while we copy the addresses.
+	 * While we copy addresses, any call to wireless_spy_update()
+	 * will NOP. This is OK, as anyway the addresses are changing. */
+	spydata->spy_number = 0;
+
+	/* We want to operate without locking, because wireless_spy_update()
+	 * most likely will happen in the interrupt handler, and therefore
+	 * have its own locking constraints and needs performance.
+	 * The rtnl_lock() make sure we don't race with the other iw_handlers.
+	 * This make sure wireless_spy_update() "see" that the spy list
+	 * is temporarily disabled. */
+	smp_wmb();
+
+	/* Are there are addresses to copy? */
+	if (wrqu->data.length > 0) {
+		int i;
+
+		/* Copy addresses */
+		for (i = 0; i < wrqu->data.length; i++)
+			memcpy(spydata->spy_address[i], address[i].sa_data,
+			       ETH_ALEN);
+		/* Reset stats */
+		memset(spydata->spy_stat, 0,
+		       sizeof(struct iw_quality) * IW_MAX_SPY);
+	}
+
+	/* Make sure above is updated before re-enabling */
+	smp_wmb();
+
+	/* Enable addresses */
+	spydata->spy_number = wrqu->data.length;
+
+	return 0;
+}
+EXPORT_SYMBOL(iw_handler_set_spy);
+
+int iw_handler_get_spy(struct net_device *	dev,
+		       struct iw_request_info *	info,
+		       union iwreq_data *	wrqu,
+		       char *			extra)
+{
+	struct iw_spy_data *	spydata = get_spydata(dev);
+	struct sockaddr *	address = (struct sockaddr *) extra;
+	int			i;
+
+	/* Make sure driver is not buggy or using the old API */
+	if (!spydata)
+		return -EOPNOTSUPP;
+
+	wrqu->data.length = spydata->spy_number;
+
+	/* Copy addresses. */
+	for (i = 0; i < spydata->spy_number; i++) 	{
+		memcpy(address[i].sa_data, spydata->spy_address[i], ETH_ALEN);
+		address[i].sa_family = AF_UNIX;
+	}
+	/* Copy stats to the user buffer (just after). */
+	if (spydata->spy_number > 0)
+		memcpy(extra  + (sizeof(struct sockaddr) *spydata->spy_number),
+		       spydata->spy_stat,
+		       sizeof(struct iw_quality) * spydata->spy_number);
+	/* Reset updated flags. */
+	for (i = 0; i < spydata->spy_number; i++)
+		spydata->spy_stat[i].updated &= ~IW_QUAL_ALL_UPDATED;
+	return 0;
+}
+EXPORT_SYMBOL(iw_handler_get_spy);
+
+/*------------------------------------------------------------------*/
+/*
+ * Standard Wireless Handler : set spy threshold
+ */
+int iw_handler_set_thrspy(struct net_device *	dev,
+			  struct iw_request_info *info,
+			  union iwreq_data *	wrqu,
+			  char *		extra)
+{
+	struct iw_spy_data *	spydata = get_spydata(dev);
+	struct iw_thrspy *	threshold = (struct iw_thrspy *) extra;
+
+	/* Make sure driver is not buggy or using the old API */
+	if (!spydata)
+		return -EOPNOTSUPP;
+
+	/* Just do it */
+	memcpy(&(spydata->spy_thr_low), &(threshold->low),
+	       2 * sizeof(struct iw_quality));
+
+	/* Clear flag */
+	memset(spydata->spy_thr_under, '\0', sizeof(spydata->spy_thr_under));
+
+	return 0;
+}
+EXPORT_SYMBOL(iw_handler_set_thrspy);
+
+/*------------------------------------------------------------------*/
+/*
+ * Standard Wireless Handler : get spy threshold
+ */
+int iw_handler_get_thrspy(struct net_device *	dev,
+			  struct iw_request_info *info,
+			  union iwreq_data *	wrqu,
+			  char *		extra)
+{
+	struct iw_spy_data *	spydata = get_spydata(dev);
+	struct iw_thrspy *	threshold = (struct iw_thrspy *) extra;
+
+	/* Make sure driver is not buggy or using the old API */
+	if (!spydata)
+		return -EOPNOTSUPP;
+
+	/* Just do it */
+	memcpy(&(threshold->low), &(spydata->spy_thr_low),
+	       2 * sizeof(struct iw_quality));
+
+	return 0;
+}
+EXPORT_SYMBOL(iw_handler_get_thrspy);
+
+/*------------------------------------------------------------------*/
+/*
+ * Prepare and send a Spy Threshold event
+ */
+static void iw_send_thrspy_event(struct net_device *	dev,
+				 struct iw_spy_data *	spydata,
+				 unsigned char *	address,
+				 struct iw_quality *	wstats)
+{
+	union iwreq_data	wrqu;
+	struct iw_thrspy	threshold;
+
+	/* Init */
+	wrqu.data.length = 1;
+	wrqu.data.flags = 0;
+	/* Copy address */
+	memcpy(threshold.addr.sa_data, address, ETH_ALEN);
+	threshold.addr.sa_family = ARPHRD_ETHER;
+	/* Copy stats */
+	memcpy(&(threshold.qual), wstats, sizeof(struct iw_quality));
+	/* Copy also thresholds */
+	memcpy(&(threshold.low), &(spydata->spy_thr_low),
+	       2 * sizeof(struct iw_quality));
+
+	/* Send event to user space */
+	wireless_send_event(dev, SIOCGIWTHRSPY, &wrqu, (char *) &threshold);
+}
+
+/* ---------------------------------------------------------------- */
+/*
+ * Call for the driver to update the spy data.
+ * For now, the spy data is a simple array. As the size of the array is
+ * small, this is good enough. If we wanted to support larger number of
+ * spy addresses, we should use something more efficient...
+ */
+void wireless_spy_update(struct net_device *	dev,
+			 unsigned char *	address,
+			 struct iw_quality *	wstats)
+{
+	struct iw_spy_data *	spydata = get_spydata(dev);
+	int			i;
+	int			match = -1;
+
+	/* Make sure driver is not buggy or using the old API */
+	if (!spydata)
+		return;
+
+	/* Update all records that match */
+	for (i = 0; i < spydata->spy_number; i++)
+		if (ether_addr_equal(address, spydata->spy_address[i])) {
+			memcpy(&(spydata->spy_stat[i]), wstats,
+			       sizeof(struct iw_quality));
+			match = i;
+		}
+
+	/* Generate an event if we cross the spy threshold.
+	 * To avoid event storms, we have a simple hysteresis : we generate
+	 * event only when we go under the low threshold or above the
+	 * high threshold. */
+	if (match >= 0) {
+		if (spydata->spy_thr_under[match]) {
+			if (wstats->level > spydata->spy_thr_high.level) {
+				spydata->spy_thr_under[match] = 0;
+				iw_send_thrspy_event(dev, spydata,
+						     address, wstats);
+			}
+		} else {
+			if (wstats->level < spydata->spy_thr_low.level) {
+				spydata->spy_thr_under[match] = 1;
+				iw_send_thrspy_event(dev, spydata,
+						     address, wstats);
+			}
+		}
+	}
+}
+EXPORT_SYMBOL(wireless_spy_update);