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		 Last update: 2005-01-17, version 1.4

This file is maintained by H. Peter Anvin <unicode@lanana.org> as part
of the Linux Assigned Names And Numbers Authority (LANANA) project.
The current version can be found at:

	    http://www.lanana.org/docs/unicode/unicode.txt

		       ------------------------

The Linux kernel code has been rewritten to use Unicode to map
characters to fonts.  By downloading a single Unicode-to-font table,
both the eight-bit character sets and UTF-8 mode are changed to use
the font as indicated.

This changes the semantics of the eight-bit character tables subtly.
The four character tables are now:

Map symbol	Map name			Escape code (G0)

LAT1_MAP	Latin-1 (ISO 8859-1)		ESC ( B
GRAF_MAP	DEC VT100 pseudographics	ESC ( 0
IBMPC_MAP	IBM code page 437		ESC ( U
USER_MAP	User defined			ESC ( K

In particular, ESC ( U is no longer "straight to font", since the font
might be completely different than the IBM character set.  This
permits for example the use of block graphics even with a Latin-1 font
loaded.

Note that although these codes are similar to ISO 2022, neither the
codes nor their uses match ISO 2022; Linux has two 8-bit codes (G0 and
G1), whereas ISO 2022 has four 7-bit codes (G0-G3).

In accordance with the Unicode standard/ISO 10646 the range U+F000 to
U+F8FF has been reserved for OS-wide allocation (the Unicode Standard
refers to this as a "Corporate Zone", since this is inaccurate for
Linux we call it the "Linux Zone").  U+F000 was picked as the starting
point since it lets the direct-mapping area start on a large power of
two (in case 1024- or 2048-character fonts ever become necessary).
This leaves U+E000 to U+EFFF as End User Zone.

[v1.2]: The Unicodes range from U+F000 and up to U+F7FF have been
hard-coded to map directly to the loaded font, bypassing the
translation table.  The user-defined map now defaults to U+F000 to
U+F0FF, emulating the previous behaviour.  In practice, this range
might be shorter; for example, vgacon can only handle 256-character
(U+F000..U+F0FF) or 512-character (U+F000..U+F1FF) fonts.


Actual characters assigned in the Linux Zone
--------------------------------------------

In addition, the following characters not present in Unicode 1.1.4
have been defined; these are used by the DEC VT graphics map.  [v1.2]
THIS USE IS OBSOLETE AND SHOULD NO LONGER BE USED; PLEASE SEE BELOW.

U+F800 DEC VT GRAPHICS HORIZONTAL LINE SCAN 1
U+F801 DEC VT GRAPHICS HORIZONTAL LINE SCAN 3
U+F803 DEC VT GRAPHICS HORIZONTAL LINE SCAN 7
U+F804 DEC VT GRAPHICS HORIZONTAL LINE SCAN 9

The DEC VT220 uses a 6x10 character matrix, and these characters form
a smooth progression in the DEC VT graphics character set.  I have
omitted the scan 5 line, since it is also used as a block-graphics
character, and hence has been coded as U+2500 FORMS LIGHT HORIZONTAL.

[v1.3]: These characters have been officially added to Unicode 3.2.0;
they are added at U+23BA, U+23BB, U+23BC, U+23BD.  Linux now uses the
new values.

[v1.2]: The following characters have been added to represent common
keyboard symbols that are unlikely to ever be added to Unicode proper
since they are horribly vendor-specific.  This, of course, is an
excellent example of horrible design.

U+F810 KEYBOARD SYMBOL FLYING FLAG
U+F811 KEYBOARD SYMBOL PULLDOWN MENU
U+F812 KEYBOARD SYMBOL OPEN APPLE
U+F813 KEYBOARD SYMBOL SOLID APPLE

Klingon language support
------------------------

In 1996, Linux was the first operating system in the world to add
support for the artificial language Klingon, created by Marc Okrand
for the "Star Trek" television series.	This encoding was later
adopted by the ConScript Unicode Registry and proposed (but ultimately
rejected) for inclusion in Unicode Plane 1.  Thus, it remains as a
Linux/CSUR private assignment in the Linux Zone.

This encoding has been endorsed by the Klingon Language Institute.
For more information, contact them at:

	http://www.kli.org/

Since the characters in the beginning of the Linux CZ have been more
of the dingbats/symbols/forms type and this is a language, I have
located it at the end, on a 16-cell boundary in keeping with standard
Unicode practice.

NOTE: This range is now officially managed by the ConScript Unicode
Registry.  The normative reference is at:

	http://www.evertype.com/standards/csur/klingon.html

Klingon has an alphabet of 26 characters, a positional numeric writing
system with 10 digits, and is written left-to-right, top-to-bottom.

Several glyph forms for the Klingon alphabet have been proposed.
However, since the set of symbols appear to be consistent throughout,
with only the actual shapes being different, in keeping with standard
Unicode practice these differences are considered font variants.

U+F8D0	KLINGON LETTER A
U+F8D1	KLINGON LETTER B
U+F8D2	KLINGON LETTER CH
U+F8D3	KLINGON LETTER D
U+F8D4	KLINGON LETTER E
U+F8D5	KLINGON LETTER GH
U+F8D6	KLINGON LETTER H
U+F8D7	KLINGON LETTER I
U+F8D8	KLINGON LETTER J
U+F8D9	KLINGON LETTER L
U+F8DA	KLINGON LETTER M
U+F8DB	KLINGON LETTER N
U+F8DC	KLINGON LETTER NG
U+F8DD	KLINGON LETTER O
U+F8DE	KLINGON LETTER P
U+F8DF	KLINGON LETTER Q
	- Written <q> in standard Okrand Latin transliteration
U+F8E0	KLINGON LETTER QH
	- Written <Q> in standard Okrand Latin transliteration
U+F8E1	KLINGON LETTER R
U+F8E2	KLINGON LETTER S
U+F8E3	KLINGON LETTER T
U+F8E4	KLINGON LETTER TLH
U+F8E5	KLINGON LETTER U
U+F8E6	KLINGON LETTER V
U+F8E7	KLINGON LETTER W
U+F8E8	KLINGON LETTER Y
U+F8E9	KLINGON LETTER GLOTTAL STOP

U+F8F0	KLINGON DIGIT ZERO
U+F8F1	KLINGON DIGIT ONE
U+F8F2	KLINGON DIGIT TWO
U+F8F3	KLINGON DIGIT THREE
U+F8F4	KLINGON DIGIT FOUR
U+F8F5	KLINGON DIGIT FIVE
U+F8F6	KLINGON DIGIT SIX
U+F8F7	KLINGON DIGIT SEVEN
U+F8F8	KLINGON DIGIT EIGHT
U+F8F9	KLINGON DIGIT NINE

U+F8FD	KLINGON COMMA
U+F8FE	KLINGON FULL STOP
U+F8FF	KLINGON SYMBOL FOR EMPIRE

Other Fictional and Artificial Scripts
--------------------------------------

Since the assignment of the Klingon Linux Unicode block, a registry of
fictional and artificial scripts has been established by John Cowan
<jcowan@reutershealth.com> and Michael Everson <everson@evertype.com>.
The ConScript Unicode Registry is accessible at:

	  http://www.evertype.com/standards/csur/

The ranges used fall at the low end of the End User Zone and can hence
not be normatively assigned, but it is recommended that people who
wish to encode fictional scripts use these codes, in the interest of
interoperability.  For Klingon, CSUR has adopted the Linux encoding.
The CSUR people are driving adding Tengwar and Cirth into Unicode
Plane 1; the addition of Klingon to Unicode Plane 1 has been rejected
and so the above encoding remains official.
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/**
  * This file contains the major functions in WLAN
  * driver. It includes init, exit, open, close and main
  * thread etc..
  */

#include <linux/moduleparam.h>
#include <linux/delay.h>
#include <linux/etherdevice.h>
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/kthread.h>

#include <net/iw_handler.h>
#include <net/ieee80211.h>

#include "host.h"
#include "decl.h"
#include "dev.h"
#include "wext.h"
#include "debugfs.h"
#include "assoc.h"
#include "join.h"
#include "cmd.h"

#define DRIVER_RELEASE_VERSION "323.p0"
const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
#ifdef  DEBUG
    "-dbg"
#endif
    "";


/* Module parameters */
unsigned int lbs_debug;
EXPORT_SYMBOL_GPL(lbs_debug);
module_param_named(libertas_debug, lbs_debug, int, 0644);


#define LBS_TX_PWR_DEFAULT		20	/*100mW */
#define LBS_TX_PWR_US_DEFAULT		20	/*100mW */
#define LBS_TX_PWR_JP_DEFAULT		16	/*50mW */
#define LBS_TX_PWR_FR_DEFAULT		20	/*100mW */
#define LBS_TX_PWR_EMEA_DEFAULT	20	/*100mW */

/* Format { channel, frequency (MHz), maxtxpower } */
/* band: 'B/G', region: USA FCC/Canada IC */
static struct chan_freq_power channel_freq_power_US_BG[] = {
	{1, 2412, LBS_TX_PWR_US_DEFAULT},
	{2, 2417, LBS_TX_PWR_US_DEFAULT},
	{3, 2422, LBS_TX_PWR_US_DEFAULT},
	{4, 2427, LBS_TX_PWR_US_DEFAULT},
	{5, 2432, LBS_TX_PWR_US_DEFAULT},
	{6, 2437, LBS_TX_PWR_US_DEFAULT},
	{7, 2442, LBS_TX_PWR_US_DEFAULT},
	{8, 2447, LBS_TX_PWR_US_DEFAULT},
	{9, 2452, LBS_TX_PWR_US_DEFAULT},
	{10, 2457, LBS_TX_PWR_US_DEFAULT},
	{11, 2462, LBS_TX_PWR_US_DEFAULT}
};

/* band: 'B/G', region: Europe ETSI */
static struct chan_freq_power channel_freq_power_EU_BG[] = {
	{1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
	{2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
	{3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
	{4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
	{5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
	{6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
	{7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
	{8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
	{9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
	{10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
	{11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
	{12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
	{13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
};

/* band: 'B/G', region: Spain */
static struct chan_freq_power channel_freq_power_SPN_BG[] = {
	{10, 2457, LBS_TX_PWR_DEFAULT},
	{11, 2462, LBS_TX_PWR_DEFAULT}
};

/* band: 'B/G', region: France */
static struct chan_freq_power channel_freq_power_FR_BG[] = {
	{10, 2457, LBS_TX_PWR_FR_DEFAULT},
	{11, 2462, LBS_TX_PWR_FR_DEFAULT},
	{12, 2467, LBS_TX_PWR_FR_DEFAULT},
	{13, 2472, LBS_TX_PWR_FR_DEFAULT}
};

/* band: 'B/G', region: Japan */
static struct chan_freq_power channel_freq_power_JPN_BG[] = {
	{1, 2412, LBS_TX_PWR_JP_DEFAULT},
	{2, 2417, LBS_TX_PWR_JP_DEFAULT},
	{3, 2422, LBS_TX_PWR_JP_DEFAULT},
	{4, 2427, LBS_TX_PWR_JP_DEFAULT},
	{5, 2432, LBS_TX_PWR_JP_DEFAULT},
	{6, 2437, LBS_TX_PWR_JP_DEFAULT},
	{7, 2442, LBS_TX_PWR_JP_DEFAULT},
	{8, 2447, LBS_TX_PWR_JP_DEFAULT},
	{9, 2452, LBS_TX_PWR_JP_DEFAULT},
	{10, 2457, LBS_TX_PWR_JP_DEFAULT},
	{11, 2462, LBS_TX_PWR_JP_DEFAULT},
	{12, 2467, LBS_TX_PWR_JP_DEFAULT},
	{13, 2472, LBS_TX_PWR_JP_DEFAULT},
	{14, 2484, LBS_TX_PWR_JP_DEFAULT}
};

/**
 * the structure for channel, frequency and power
 */
struct region_cfp_table {
	u8 region;
	struct chan_freq_power *cfp_BG;
	int cfp_no_BG;
};

/**
 * the structure for the mapping between region and CFP
 */
static struct region_cfp_table region_cfp_table[] = {
	{0x10,			/*US FCC */
	 channel_freq_power_US_BG,
	 ARRAY_SIZE(channel_freq_power_US_BG),
	 }
	,
	{0x20,			/*CANADA IC */
	 channel_freq_power_US_BG,
	 ARRAY_SIZE(channel_freq_power_US_BG),
	 }
	,
	{0x30, /*EU*/ channel_freq_power_EU_BG,
	 ARRAY_SIZE(channel_freq_power_EU_BG),
	 }
	,
	{0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
	 ARRAY_SIZE(channel_freq_power_SPN_BG),
	 }
	,
	{0x32, /*FRANCE*/ channel_freq_power_FR_BG,
	 ARRAY_SIZE(channel_freq_power_FR_BG),
	 }
	,
	{0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
	 ARRAY_SIZE(channel_freq_power_JPN_BG),
	 }
	,
/*Add new region here */
};

/**
 * the table to keep region code
 */
u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
    { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };

/**
 * 802.11b/g supported bitrates (in 500Kb/s units)
 */
u8 lbs_bg_rates[MAX_RATES] =
    { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
0x00, 0x00 };

/**
 * FW rate table.  FW refers to rates by their index in this table, not by the
 * rate value itself.  Values of 0x00 are
 * reserved positions.
 */
static u8 fw_data_rates[MAX_RATES] =
    { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
      0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
};

/**
 *  @brief use index to get the data rate
 *
 *  @param idx                The index of data rate
 *  @return 	   		data rate or 0
 */
u32 lbs_fw_index_to_data_rate(u8 idx)
{
	if (idx >= sizeof(fw_data_rates))
		idx = 0;
	return fw_data_rates[idx];
}

/**
 *  @brief use rate to get the index
 *
 *  @param rate                 data rate
 *  @return 	   		index or 0
 */
u8 lbs_data_rate_to_fw_index(u32 rate)
{
	u8 i;

	if (!rate)
		return 0;

	for (i = 0; i < sizeof(fw_data_rates); i++) {
		if (rate == fw_data_rates[i])
			return i;
	}
	return 0;
}

/**
 * Attributes exported through sysfs
 */

/**
 * @brief Get function for sysfs attribute anycast_mask
 */
static ssize_t lbs_anycast_get(struct device *dev,
		struct device_attribute *attr, char * buf)
{
	struct lbs_private *priv = to_net_dev(dev)->priv;
	struct cmd_ds_mesh_access mesh_access;
	int ret;

	memset(&mesh_access, 0, sizeof(mesh_access));

	ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
	if (ret)
		return ret;

	return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
}

/**
 * @brief Set function for sysfs attribute anycast_mask
 */
static ssize_t lbs_anycast_set(struct device *dev,
		struct device_attribute *attr, const char * buf, size_t count)
{
	struct lbs_private *priv = to_net_dev(dev)->priv;
	struct cmd_ds_mesh_access mesh_access;
	uint32_t datum;
	int ret;

	memset(&mesh_access, 0, sizeof(mesh_access));
	sscanf(buf, "%x", &datum);
	mesh_access.data[0] = cpu_to_le32(datum);

	ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
	if (ret)
		return ret;

	return strlen(buf);
}

static int lbs_add_rtap(struct lbs_private *priv);
static void lbs_remove_rtap(struct lbs_private *priv);
static int lbs_add_mesh(struct lbs_private *priv);
static void lbs_remove_mesh(struct lbs_private *priv);


/**
 * Get function for sysfs attribute rtap
 */
static ssize_t lbs_rtap_get(struct device *dev,
		struct device_attribute *attr, char * buf)
{
	struct lbs_private *priv = to_net_dev(dev)->priv;
	return snprintf(buf, 5, "0x%X\n", priv->monitormode);
}

/**
 *  Set function for sysfs attribute rtap
 */
static ssize_t lbs_rtap_set(struct device *dev,
		struct device_attribute *attr, const char * buf, size_t count)
{
	int monitor_mode;
	struct lbs_private *priv = to_net_dev(dev)->priv;

	sscanf(buf, "%x", &monitor_mode);
	if (monitor_mode != LBS_MONITOR_OFF) {
		if(priv->monitormode == monitor_mode)
			return strlen(buf);
		if (priv->monitormode == LBS_MONITOR_OFF) {
			if (priv->infra_open || priv->mesh_open)
				return -EBUSY;
			if (priv->mode == IW_MODE_INFRA)
				lbs_send_deauthentication(priv);
			else if (priv->mode == IW_MODE_ADHOC)
				lbs_stop_adhoc_network(priv);
			lbs_add_rtap(priv);
		}
		priv->monitormode = monitor_mode;
	}

	else {
		if (priv->monitormode == LBS_MONITOR_OFF)
			return strlen(buf);
		priv->monitormode = LBS_MONITOR_OFF;
		lbs_remove_rtap(priv);

		if (priv->currenttxskb) {
			dev_kfree_skb_any(priv->currenttxskb);
			priv->currenttxskb = NULL;
		}

		/* Wake queues, command thread, etc. */
		lbs_host_to_card_done(priv);
	}

	lbs_prepare_and_send_command(priv,
			CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
			CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
	return strlen(buf);
}

/**
 * lbs_rtap attribute to be exported per ethX interface
 * through sysfs (/sys/class/net/ethX/lbs_rtap)
 */
static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set );

/**
 * Get function for sysfs attribute mesh
 */
static ssize_t lbs_mesh_get(struct device *dev,
		struct device_attribute *attr, char * buf)
{
	struct lbs_private *priv = to_net_dev(dev)->priv;
	return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
}

/**
 *  Set function for sysfs attribute mesh
 */
static ssize_t lbs_mesh_set(struct device *dev,
		struct device_attribute *attr, const char * buf, size_t count)
{
	struct lbs_private *priv = to_net_dev(dev)->priv;
	int enable;
	int ret;

	sscanf(buf, "%x", &enable);
	enable = !!enable;
	if (enable == !!priv->mesh_dev)
		return count;

	ret = lbs_mesh_config(priv, enable, priv->curbssparams.channel);
	if (ret)
		return ret;

	if (enable)
		lbs_add_mesh(priv);
	else
		lbs_remove_mesh(priv);

	return count;
}

/**
 * lbs_mesh attribute to be exported per ethX interface
 * through sysfs (/sys/class/net/ethX/lbs_mesh)
 */
static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);

/**
 * anycast_mask attribute to be exported per mshX interface
 * through sysfs (/sys/class/net/mshX/anycast_mask)
 */
static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);

static struct attribute *lbs_mesh_sysfs_entries[] = {
	&dev_attr_anycast_mask.attr,
	NULL,
};

static struct attribute_group lbs_mesh_attr_group = {
	.attrs = lbs_mesh_sysfs_entries,
};

/**
 *  @brief This function opens the ethX or mshX interface
 *
 *  @param dev     A pointer to net_device structure
 *  @return 	   0 or -EBUSY if monitor mode active
 */
static int lbs_dev_open(struct net_device *dev)
{
	struct lbs_private *priv = (struct lbs_private *) dev->priv ;
	int ret = 0;

	lbs_deb_enter(LBS_DEB_NET);

	spin_lock_irq(&priv->driver_lock);

	if (priv->monitormode != LBS_MONITOR_OFF) {
		ret = -EBUSY;
		goto out;
	}

	if (dev == priv->mesh_dev) {
		priv->mesh_open = 1;
		priv->mesh_connect_status = LBS_CONNECTED;
		netif_carrier_on(dev);
	} else {
		priv->infra_open = 1;

		if (priv->connect_status == LBS_CONNECTED)
			netif_carrier_on(dev);
		else
			netif_carrier_off(dev);
	}

	if (!priv->tx_pending_len)
		netif_wake_queue(dev);
 out:

	spin_unlock_irq(&priv->driver_lock);
	lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
	return ret;
}

/**
 *  @brief This function closes the mshX interface
 *
 *  @param dev     A pointer to net_device structure
 *  @return 	   0
 */
static int lbs_mesh_stop(struct net_device *dev)
{
	struct lbs_private *priv = (struct lbs_private *) (dev->priv);

	lbs_deb_enter(LBS_DEB_MESH);
	spin_lock_irq(&priv->driver_lock);

	priv->mesh_open = 0;
	priv->mesh_connect_status = LBS_DISCONNECTED;

	netif_stop_queue(dev);
	netif_carrier_off(dev);

	spin_unlock_irq(&priv->driver_lock);

	lbs_deb_leave(LBS_DEB_MESH);
	return 0;
}

/**
 *  @brief This function closes the ethX interface
 *
 *  @param dev     A pointer to net_device structure
 *  @return 	   0
 */
static int lbs_eth_stop(struct net_device *dev)
{
	struct lbs_private *priv = (struct lbs_private *) dev->priv;

	lbs_deb_enter(LBS_DEB_NET);

	spin_lock_irq(&priv->driver_lock);
	priv->infra_open = 0;
	netif_stop_queue(dev);
	spin_unlock_irq(&priv->driver_lock);

	lbs_deb_leave(LBS_DEB_NET);
	return 0;
}

static void lbs_tx_timeout(struct net_device *dev)
{
	struct lbs_private *priv = (struct lbs_private *) dev->priv;

	lbs_deb_enter(LBS_DEB_TX);

	lbs_pr_err("tx watch dog timeout\n");

	dev->trans_start = jiffies;

	if (priv->currenttxskb) {
		priv->eventcause = 0x01000000;
		lbs_send_tx_feedback(priv);
	}
	/* XX: Shouldn't we also call into the hw-specific driver
	   to kick it somehow? */
	lbs_host_to_card_done(priv);

	/* More often than not, this actually happens because the
	   firmware has crapped itself -- rather than just a very
	   busy medium. So send a harmless command, and if/when
	   _that_ times out, we'll kick it in the head. */
	lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
				     0, 0, NULL);

	lbs_deb_leave(LBS_DEB_TX);
}

void lbs_host_to_card_done(struct lbs_private *priv)
{
	unsigned long flags;

	lbs_deb_enter(LBS_DEB_THREAD);

	spin_lock_irqsave(&priv->driver_lock, flags);

	priv->dnld_sent = DNLD_RES_RECEIVED;

	/* Wake main thread if commands are pending */
	if (!priv->cur_cmd || priv->tx_pending_len > 0)
		wake_up_interruptible(&priv->waitq);

	spin_unlock_irqrestore(&priv->driver_lock, flags);
	lbs_deb_leave(LBS_DEB_THREAD);
}
EXPORT_SYMBOL_GPL(lbs_host_to_card_done);

/**
 *  @brief This function returns the network statistics
 *
 *  @param dev     A pointer to struct lbs_private structure
 *  @return 	   A pointer to net_device_stats structure
 */
static struct net_device_stats *lbs_get_stats(struct net_device *dev)
{
	struct lbs_private *priv = (struct lbs_private *) dev->priv;

	lbs_deb_enter(LBS_DEB_NET);
	return &priv->stats;
}

static int lbs_set_mac_address(struct net_device *dev, void *addr)
{
	int ret = 0;
	struct lbs_private *priv = (struct lbs_private *) dev->priv;
	struct sockaddr *phwaddr = addr;

	lbs_deb_enter(LBS_DEB_NET);

	/* In case it was called from the mesh device */
	dev = priv->dev ;

	memset(priv->current_addr, 0, ETH_ALEN);

	/* dev->dev_addr is 8 bytes */
	lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);

	lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
	memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);

	ret = lbs_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
				    CMD_ACT_SET,
				    CMD_OPTION_WAITFORRSP, 0, NULL);

	if (ret) {
		lbs_deb_net("set MAC address failed\n");
		ret = -1;
		goto done;
	}

	lbs_deb_hex(LBS_DEB_NET, "priv->macaddr", priv->current_addr, ETH_ALEN);
	memcpy(dev->dev_addr, priv->current_addr, ETH_ALEN);
	if (priv->mesh_dev)
		memcpy(priv->mesh_dev->dev_addr, priv->current_addr, ETH_ALEN);

done:
	lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
	return ret;
}

static int lbs_copy_multicast_address(struct lbs_private *priv,
				     struct net_device *dev)
{
	int i = 0;
	struct dev_mc_list *mcptr = dev->mc_list;

	for (i = 0; i < dev->mc_count; i++) {
		memcpy(&priv->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
		mcptr = mcptr->next;
	}
	return i;
}

static void lbs_set_multicast_list(struct net_device *dev)
{
	struct lbs_private *priv = dev->priv;
	int oldpacketfilter;
	DECLARE_MAC_BUF(mac);

	lbs_deb_enter(LBS_DEB_NET);

	oldpacketfilter = priv->currentpacketfilter;

	if (dev->flags & IFF_PROMISC) {
		lbs_deb_net("enable promiscuous mode\n");
		priv->currentpacketfilter |=
		    CMD_ACT_MAC_PROMISCUOUS_ENABLE;
		priv->currentpacketfilter &=
		    ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
		      CMD_ACT_MAC_MULTICAST_ENABLE);
	} else {
		/* Multicast */
		priv->currentpacketfilter &=
		    ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;

		if (dev->flags & IFF_ALLMULTI || dev->mc_count >
		    MRVDRV_MAX_MULTICAST_LIST_SIZE) {
			lbs_deb_net( "enabling all multicast\n");
			priv->currentpacketfilter |=
			    CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
			priv->currentpacketfilter &=
			    ~CMD_ACT_MAC_MULTICAST_ENABLE;
		} else {
			priv->currentpacketfilter &=
			    ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;

			if (!dev->mc_count) {
				lbs_deb_net("no multicast addresses, "
				       "disabling multicast\n");
				priv->currentpacketfilter &=
				    ~CMD_ACT_MAC_MULTICAST_ENABLE;
			} else {
				int i;

				priv->currentpacketfilter |=
				    CMD_ACT_MAC_MULTICAST_ENABLE;

				priv->nr_of_multicastmacaddr =
				    lbs_copy_multicast_address(priv, dev);

				lbs_deb_net("multicast addresses: %d\n",
				       dev->mc_count);

				for (i = 0; i < dev->mc_count; i++) {
					lbs_deb_net("Multicast address %d: %s\n",
					       i, print_mac(mac,
					       priv->multicastlist[i]));
				}
				/* send multicast addresses to firmware */
				lbs_prepare_and_send_command(priv,
						      CMD_MAC_MULTICAST_ADR,
						      CMD_ACT_SET, 0, 0,
						      NULL);
			}
		}
	}

	if (priv->currentpacketfilter != oldpacketfilter) {
		lbs_set_mac_packet_filter(priv);
	}

	lbs_deb_leave(LBS_DEB_NET);
}

/**
 *  @brief This function handles the major jobs in the LBS driver.
 *  It handles all events generated by firmware, RX data received
 *  from firmware and TX data sent from kernel.
 *
 *  @param data    A pointer to lbs_thread structure
 *  @return 	   0
 */
static int lbs_thread(void *data)
{
	struct net_device *dev = data;
	struct lbs_private *priv = dev->priv;
	wait_queue_t wait;
	u8 ireg = 0;

	lbs_deb_enter(LBS_DEB_THREAD);

	init_waitqueue_entry(&wait, current);

	for (;;) {
		int shouldsleep;

		lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
				priv->intcounter, priv->currenttxskb, priv->dnld_sent);

		add_wait_queue(&priv->waitq, &wait);
		set_current_state(TASK_INTERRUPTIBLE);
		spin_lock_irq(&priv->driver_lock);

		if (kthread_should_stop())
			shouldsleep = 0;	/* Bye */
		else if (priv->surpriseremoved)
			shouldsleep = 1;	/* We need to wait until we're _told_ to die */
		else if (priv->psstate == PS_STATE_SLEEP)
			shouldsleep = 1;	/* Sleep mode. Nothing we can do till it wakes */
		else if (priv->intcounter)
			shouldsleep = 0;	/* Interrupt pending. Deal with it now */
		else if (priv->cmd_timed_out)
			shouldsleep = 0;	/* Command timed out. Recover */
		else if (!priv->fw_ready)
			shouldsleep = 1;	/* Firmware not ready. We're waiting for it */
		else if (priv->dnld_sent)
			shouldsleep = 1;	/* Something is en route to the device already */
		else if (priv->tx_pending_len > 0)
			shouldsleep = 0;	/* We've a packet to send */
		else if (priv->cur_cmd)
			shouldsleep = 1;	/* Can't send a command; one already running */
		else if (!list_empty(&priv->cmdpendingq))
			shouldsleep = 0;	/* We have a command to send */
		else
			shouldsleep = 1;	/* No command */

		if (shouldsleep) {
			lbs_deb_thread("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
				       priv->connect_status, priv->intcounter,
				       priv->psmode, priv->psstate);
			spin_unlock_irq(&priv->driver_lock);
			schedule();
		} else
			spin_unlock_irq(&priv->driver_lock);

		lbs_deb_thread("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n",
			       priv->intcounter, priv->currenttxskb, priv->dnld_sent);

		set_current_state(TASK_RUNNING);
		remove_wait_queue(&priv->waitq, &wait);

		lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
			       priv->intcounter, priv->currenttxskb, priv->dnld_sent);

		if (kthread_should_stop()) {
			lbs_deb_thread("main-thread: break from main thread\n");
			break;
		}

		if (priv->surpriseremoved) {
			lbs_deb_thread("adapter removed; waiting to die...\n");
			continue;
		}

		spin_lock_irq(&priv->driver_lock);

		if (priv->intcounter) {
			u8 int_status;

			priv->intcounter = 0;
			int_status = priv->hw_get_int_status(priv, &ireg);

			if (int_status) {
				lbs_deb_thread("main-thread: reading HOST_INT_STATUS_REG failed\n");
				spin_unlock_irq(&priv->driver_lock);
				continue;
			}
			priv->hisregcpy |= ireg;
		}

		lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
			       priv->intcounter, priv->currenttxskb, priv->dnld_sent);

		/* command response? */
		if (priv->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
			lbs_deb_thread("main-thread: cmd response ready\n");

			priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
			spin_unlock_irq(&priv->driver_lock);
			lbs_process_rx_command(priv);
			spin_lock_irq(&priv->driver_lock);
		}

		if (priv->cmd_timed_out && priv->cur_cmd) {
			struct cmd_ctrl_node *cmdnode = priv->cur_cmd;

			if (++priv->nr_retries > 10) {
				lbs_pr_info("Excessive timeouts submitting command %x\n",
					    le16_to_cpu(cmdnode->cmdbuf->command));
				lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
				priv->nr_retries = 0;
			} else {
				priv->cur_cmd = NULL;
				lbs_pr_info("requeueing command %x due to timeout (#%d)\n",
					    le16_to_cpu(cmdnode->cmdbuf->command), priv->nr_retries);

				/* Stick it back at the _top_ of the pending queue
				   for immediate resubmission */
				list_add(&cmdnode->list, &priv->cmdpendingq);
			}
		}
		priv->cmd_timed_out = 0;

		/* Any Card Event */
		if (priv->hisregcpy & MRVDRV_CARDEVENT) {
			lbs_deb_thread("main-thread: Card Event Activity\n");

			priv->hisregcpy &= ~MRVDRV_CARDEVENT;

			if (priv->hw_read_event_cause(priv)) {
				lbs_pr_alert("main-thread: hw_read_event_cause failed\n");
				spin_unlock_irq(&priv->driver_lock);
				continue;
			}
			spin_unlock_irq(&priv->driver_lock);
			lbs_process_event(priv);
		} else
			spin_unlock_irq(&priv->driver_lock);

		if (!priv->fw_ready)
			continue;

		/* Check if we need to confirm Sleep Request received previously */
		if (priv->psstate == PS_STATE_PRE_SLEEP &&
		    !priv->dnld_sent && !priv->cur_cmd) {
			if (priv->connect_status == LBS_CONNECTED) {
				lbs_deb_thread("main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n",
					       priv->intcounter, priv->currenttxskb, priv->dnld_sent, priv->cur_cmd);

				lbs_ps_confirm_sleep(priv, (u16) priv->psmode);
			} else {
				/* workaround for firmware sending
				 * deauth/linkloss event immediately
				 * after sleep request; remove this
				 * after firmware fixes it
				 */
				priv->psstate = PS_STATE_AWAKE;
				lbs_pr_alert("main-thread: ignore PS_SleepConfirm in non-connected state\n");
			}
		}

		/* The PS state is changed during processing of Sleep Request
		 * event above
		 */
		if ((priv->psstate == PS_STATE_SLEEP) ||
		    (priv->psstate == PS_STATE_PRE_SLEEP))
			continue;

		/* Execute the next command */
		if (!priv->dnld_sent && !priv->cur_cmd)
			lbs_execute_next_command(priv);

		/* Wake-up command waiters which can't sleep in
		 * lbs_prepare_and_send_command
		 */
		if (!list_empty(&priv->cmdpendingq))
			wake_up_all(&priv->cmd_pending);

		spin_lock_irq(&priv->driver_lock);
		if (!priv->dnld_sent && priv->tx_pending_len > 0) {
			int ret = priv->hw_host_to_card(priv, MVMS_DAT,
							priv->tx_pending_buf,
							priv->tx_pending_len);
			if (ret) {
				lbs_deb_tx("host_to_card failed %d\n", ret);
				priv->dnld_sent = DNLD_RES_RECEIVED;
			}
			priv->tx_pending_len = 0;
			if (!priv->currenttxskb) {
				/* We can wake the queues immediately if we aren't
				   waiting for TX feedback */
				if (priv->connect_status == LBS_CONNECTED)
					netif_wake_queue(priv->dev);
				if (priv->mesh_dev &&
				    priv->mesh_connect_status == LBS_CONNECTED)
					netif_wake_queue(priv->mesh_dev);
			}
		}
		spin_unlock_irq(&priv->driver_lock);
	}

	del_timer(&priv->command_timer);
	wake_up_all(&priv->cmd_pending);

	lbs_deb_leave(LBS_DEB_THREAD);
	return 0;
}

static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
				struct cmd_header *cmd)
{
	lbs_deb_enter(LBS_DEB_FW);

	netif_device_detach(priv->dev);
	if (priv->mesh_dev)
		netif_device_detach(priv->mesh_dev);

	priv->fw_ready = 0;
	lbs_deb_leave(LBS_DEB_FW);
	return 0;
}

int lbs_suspend(struct lbs_private *priv)
{
	struct cmd_header cmd;
	int ret;

	lbs_deb_enter(LBS_DEB_FW);

	if (priv->wol_criteria == 0xffffffff) {
		lbs_pr_info("Suspend attempt without configuring wake params!\n");
		return -EINVAL;
	}

	memset(&cmd, 0, sizeof(cmd));

	ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
			sizeof(cmd), lbs_suspend_callback, 0);
	if (ret)
		lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);

	lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
	return ret;
}
EXPORT_SYMBOL_GPL(lbs_suspend);

int lbs_resume(struct lbs_private *priv)
{
	lbs_deb_enter(LBS_DEB_FW);

	priv->fw_ready = 1;

	/* Firmware doesn't seem to give us RX packets any more
	   until we send it some command. Might as well update */
	lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
				     0, 0, NULL);

	netif_device_attach(priv->dev);
	if (priv->mesh_dev)
		netif_device_attach(priv->mesh_dev);

	lbs_deb_leave(LBS_DEB_FW);
	return 0;
}
EXPORT_SYMBOL_GPL(lbs_resume);

/**
 *  @brief This function downloads firmware image, gets
 *  HW spec from firmware and set basic parameters to
 *  firmware.
 *
 *  @param priv    A pointer to struct lbs_private structure
 *  @return 	   0 or -1
 */
static int lbs_setup_firmware(struct lbs_private *priv)
{
	int ret = -1;

	lbs_deb_enter(LBS_DEB_FW);

	/*
	 * Read MAC address from HW
	 */
	memset(priv->current_addr, 0xff, ETH_ALEN);
	ret = lbs_update_hw_spec(priv);
	if (ret) {
		ret = -1;
		goto done;
	}

	lbs_set_mac_packet_filter(priv);

	ret = lbs_get_data_rate(priv);
	if (ret < 0) {
		ret = -1;
		goto done;
	}

	ret = 0;
done:
	lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
	return ret;
}

/**
 *  This function handles the timeout of command sending.
 *  It will re-send the same command again.
 */
static void command_timer_fn(unsigned long data)
{
	struct lbs_private *priv = (struct lbs_private *)data;
	unsigned long flags;

	lbs_deb_enter(LBS_DEB_CMD);
	spin_lock_irqsave(&priv->driver_lock, flags);

	if (!priv->cur_cmd) {
		lbs_pr_info("Command timer expired; no pending command\n");
		goto out;
	}

	lbs_pr_info("Command %x timed out\n", le16_to_cpu(priv->cur_cmd->cmdbuf->command));

	priv->cmd_timed_out = 1;
	wake_up_interruptible(&priv->waitq);
out:
	spin_unlock_irqrestore(&priv->driver_lock, flags);
	lbs_deb_leave(LBS_DEB_CMD);
}

static int lbs_init_adapter(struct lbs_private *priv)
{
	size_t bufsize;
	int i, ret = 0;

	lbs_deb_enter(LBS_DEB_MAIN);

	/* Allocate buffer to store the BSSID list */
	bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
	priv->networks = kzalloc(bufsize, GFP_KERNEL);
	if (!priv->networks) {
		lbs_pr_err("Out of memory allocating beacons\n");
		ret = -1;
		goto out;
	}

	/* Initialize scan result lists */
	INIT_LIST_HEAD(&priv->network_free_list);
	INIT_LIST_HEAD(&priv->network_list);
	for (i = 0; i < MAX_NETWORK_COUNT; i++) {
		list_add_tail(&priv->networks[i].list,
			      &priv->network_free_list);
	}

	priv->lbs_ps_confirm_sleep.seqnum = cpu_to_le16(++priv->seqnum);
	priv->lbs_ps_confirm_sleep.command =
	    cpu_to_le16(CMD_802_11_PS_MODE);
	priv->lbs_ps_confirm_sleep.size =
	    cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
	priv->lbs_ps_confirm_sleep.action =
	    cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);

	memset(priv->current_addr, 0xff, ETH_ALEN);

	priv->connect_status = LBS_DISCONNECTED;
	priv->mesh_connect_status = LBS_DISCONNECTED;
	priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
	priv->mode = IW_MODE_INFRA;
	priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
	priv->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
	priv->radioon = RADIO_ON;
	priv->auto_rate = 1;
	priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
	priv->psmode = LBS802_11POWERMODECAM;
	priv->psstate = PS_STATE_FULL_POWER;

	mutex_init(&priv->lock);

	setup_timer(&priv->command_timer, command_timer_fn,
		(unsigned long)priv);

	INIT_LIST_HEAD(&priv->cmdfreeq);
	INIT_LIST_HEAD(&priv->cmdpendingq);

	spin_lock_init(&priv->driver_lock);
	init_waitqueue_head(&priv->cmd_pending);

	/* Allocate the command buffers */
	if (lbs_allocate_cmd_buffer(priv)) {
		lbs_pr_err("Out of memory allocating command buffers\n");
		ret = -1;
	}

out:
	lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);

	return ret;
}

static void lbs_free_adapter(struct lbs_private *priv)
{
	lbs_deb_enter(LBS_DEB_MAIN);

	lbs_free_cmd_buffer(priv);
	del_timer(&priv->command_timer);
	kfree(priv->networks);
	priv->networks = NULL;

	lbs_deb_leave(LBS_DEB_MAIN);
}

/**
 * @brief This function adds the card. it will probe the
 * card, allocate the lbs_priv and initialize the device.
 *
 *  @param card    A pointer to card
 *  @return 	   A pointer to struct lbs_private structure
 */
struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
{
	struct net_device *dev = NULL;
	struct lbs_private *priv = NULL;

	lbs_deb_enter(LBS_DEB_MAIN);

	/* Allocate an Ethernet device and register it */
	dev = alloc_etherdev(sizeof(struct lbs_private));
	if (!dev) {
		lbs_pr_err("init ethX device failed\n");
		goto done;
	}
	priv = dev->priv;

	if (lbs_init_adapter(priv)) {
		lbs_pr_err("failed to initialize adapter structure.\n");
		goto err_init_adapter;
	}

	priv->dev = dev;
	priv->card = card;
	priv->mesh_open = 0;
	priv->infra_open = 0;

	/* Setup the OS Interface to our functions */
	dev->open = lbs_dev_open;
	dev->hard_start_xmit = lbs_hard_start_xmit;
	dev->stop = lbs_eth_stop;
	dev->set_mac_address = lbs_set_mac_address;
	dev->tx_timeout = lbs_tx_timeout;
	dev->get_stats = lbs_get_stats;
	dev->watchdog_timeo = 5 * HZ;
	dev->ethtool_ops = &lbs_ethtool_ops;
#ifdef	WIRELESS_EXT
	dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
#endif
	dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
	dev->set_multicast_list = lbs_set_multicast_list;

	SET_NETDEV_DEV(dev, dmdev);

	priv->rtap_net_dev = NULL;

	lbs_deb_thread("Starting main thread...\n");
	init_waitqueue_head(&priv->waitq);
	priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
	if (IS_ERR(priv->main_thread)) {
		lbs_deb_thread("Error creating main thread.\n");
		goto err_init_adapter;
	}

	priv->work_thread = create_singlethread_workqueue("lbs_worker");
	INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
	INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
	INIT_WORK(&priv->sync_channel, lbs_sync_channel);

	sprintf(priv->mesh_ssid, "mesh");
	priv->mesh_ssid_len = 4;

	priv->wol_criteria = 0xffffffff;
	priv->wol_gpio = 0xff;

	goto done;

err_init_adapter:
	lbs_free_adapter(priv);
	free_netdev(dev);
	priv = NULL;

done:
	lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
	return priv;
}
EXPORT_SYMBOL_GPL(lbs_add_card);


int lbs_remove_card(struct lbs_private *priv)
{
	struct net_device *dev = priv->dev;
	union iwreq_data wrqu;

	lbs_deb_enter(LBS_DEB_MAIN);

	lbs_remove_mesh(priv);
	lbs_remove_rtap(priv);

	dev = priv->dev;

	cancel_delayed_work(&priv->scan_work);
	cancel_delayed_work(&priv->assoc_work);
	destroy_workqueue(priv->work_thread);

	if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
		priv->psmode = LBS802_11POWERMODECAM;
		lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
	}

	memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
	wrqu.ap_addr.sa_family = ARPHRD_ETHER;
	wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);

	/* Stop the thread servicing the interrupts */
	priv->surpriseremoved = 1;
	kthread_stop(priv->main_thread);

	lbs_free_adapter(priv);

	priv->dev = NULL;
	free_netdev(dev);

	lbs_deb_leave(LBS_DEB_MAIN);
	return 0;
}
EXPORT_SYMBOL_GPL(lbs_remove_card);


int lbs_start_card(struct lbs_private *priv)
{
	struct net_device *dev = priv->dev;
	int ret = -1;

	lbs_deb_enter(LBS_DEB_MAIN);

	/* poke the firmware */
	ret = lbs_setup_firmware(priv);
	if (ret)
		goto done;

	/* init 802.11d */
	lbs_init_11d(priv);

	if (register_netdev(dev)) {
		lbs_pr_err("cannot register ethX device\n");
		goto done;
	}
	if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
		lbs_pr_err("cannot register lbs_rtap attribute\n");

	lbs_update_channel(priv);

	/* 5.0.16p0 is known to NOT support any mesh */
	if (priv->fwrelease > 0x05001000) {
		/* Enable mesh, if supported, and work out which TLV it uses.
		   0x100 + 291 is an unofficial value used in 5.110.20.pXX
		   0x100 + 37 is the official value used in 5.110.21.pXX
		   but we check them in that order because 20.pXX doesn't
		   give an error -- it just silently fails. */

		/* 5.110.20.pXX firmware will fail the command if the channel
		   doesn't match the existing channel. But only if the TLV
		   is correct. If the channel is wrong, _BOTH_ versions will
		   give an error to 0x100+291, and allow 0x100+37 to succeed.
		   It's just that 5.110.20.pXX will not have done anything
		   useful */

		priv->mesh_tlv = 0x100 + 291;
		if (lbs_mesh_config(priv, 1, priv->curbssparams.channel)) {
			priv->mesh_tlv = 0x100 + 37;
			if (lbs_mesh_config(priv, 1, priv->curbssparams.channel))
				priv->mesh_tlv = 0;
		}
		if (priv->mesh_tlv) {
			lbs_add_mesh(priv);

			if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
				lbs_pr_err("cannot register lbs_mesh attribute\n");
		}
	}

	lbs_debugfs_init_one(priv, dev);

	lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);

	ret = 0;

done:
	lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
	return ret;
}
EXPORT_SYMBOL_GPL(lbs_start_card);


int lbs_stop_card(struct lbs_private *priv)
{
	struct net_device *dev = priv->dev;
	int ret = -1;
	struct cmd_ctrl_node *cmdnode;
	unsigned long flags;

	lbs_deb_enter(LBS_DEB_MAIN);

	netif_stop_queue(priv->dev);
	netif_carrier_off(priv->dev);

	lbs_debugfs_remove_one(priv);
	device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
	if (priv->mesh_tlv)
		device_remove_file(&dev->dev, &dev_attr_lbs_mesh);

	/* Flush pending command nodes */
	spin_lock_irqsave(&priv->driver_lock, flags);
	list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
		cmdnode->result = -ENOENT;
		cmdnode->cmdwaitqwoken = 1;
		wake_up_interruptible(&cmdnode->cmdwait_q);
	}
	spin_unlock_irqrestore(&priv->driver_lock, flags);

	unregister_netdev(dev);

	lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
	return ret;
}
EXPORT_SYMBOL_GPL(lbs_stop_card);


/**
 * @brief This function adds mshX interface
 *
 *  @param priv    A pointer to the struct lbs_private structure
 *  @return 	   0 if successful, -X otherwise
 */
static int lbs_add_mesh(struct lbs_private *priv)
{
	struct net_device *mesh_dev = NULL;
	int ret = 0;

	lbs_deb_enter(LBS_DEB_MESH);

	/* Allocate a virtual mesh device */
	if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
		lbs_deb_mesh("init mshX device failed\n");
		ret = -ENOMEM;
		goto done;
	}
	mesh_dev->priv = priv;
	priv->mesh_dev = mesh_dev;

	mesh_dev->open = lbs_dev_open;
	mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
	mesh_dev->stop = lbs_mesh_stop;
	mesh_dev->get_stats = lbs_get_stats;
	mesh_dev->set_mac_address = lbs_set_mac_address;
	mesh_dev->ethtool_ops = &lbs_ethtool_ops;
	memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
			sizeof(priv->dev->dev_addr));

	SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);

#ifdef	WIRELESS_EXT
	mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
#endif
	/* Register virtual mesh interface */
	ret = register_netdev(mesh_dev);
	if (ret) {
		lbs_pr_err("cannot register mshX virtual interface\n");
		goto err_free;
	}

	ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
	if (ret)
		goto err_unregister;

	/* Everything successful */
	ret = 0;
	goto done;

err_unregister:
	unregister_netdev(mesh_dev);

err_free:
	free_netdev(mesh_dev);

done:
	lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
	return ret;
}

static void lbs_remove_mesh(struct lbs_private *priv)
{
	struct net_device *mesh_dev;


	mesh_dev = priv->mesh_dev;
	if (!mesh_dev)
		return;

	lbs_deb_enter(LBS_DEB_MESH);
	netif_stop_queue(mesh_dev);
	netif_carrier_off(priv->mesh_dev);
	sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
	unregister_netdev(mesh_dev);
	priv->mesh_dev = NULL;
	free_netdev(mesh_dev);
	lbs_deb_leave(LBS_DEB_MESH);
}

/**
 *  @brief This function finds the CFP in
 *  region_cfp_table based on region and band parameter.
 *
 *  @param region  The region code
 *  @param band	   The band
 *  @param cfp_no  A pointer to CFP number
 *  @return 	   A pointer to CFP
 */
struct chan_freq_power *lbs_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
{
	int i, end;

	lbs_deb_enter(LBS_DEB_MAIN);

	end = ARRAY_SIZE(region_cfp_table);

	for (i = 0; i < end ; i++) {
		lbs_deb_main("region_cfp_table[i].region=%d\n",
			region_cfp_table[i].region);
		if (region_cfp_table[i].region == region) {
			*cfp_no = region_cfp_table[i].cfp_no_BG;
			lbs_deb_leave(LBS_DEB_MAIN);
			return region_cfp_table[i].cfp_BG;
		}
	}

	lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
	return NULL;
}

int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
{
	int ret = 0;
	int i = 0;

	struct chan_freq_power *cfp;
	int cfp_no;

	lbs_deb_enter(LBS_DEB_MAIN);

	memset(priv->region_channel, 0, sizeof(priv->region_channel));

	cfp = lbs_get_region_cfp_table(region, band, &cfp_no);
	if (cfp != NULL) {
		priv->region_channel[i].nrcfp = cfp_no;
		priv->region_channel[i].CFP = cfp;
	} else {
		lbs_deb_main("wrong region code %#x in band B/G\n",
		       region);
		ret = -1;
		goto out;
	}
	priv->region_channel[i].valid = 1;
	priv->region_channel[i].region = region;
	priv->region_channel[i].band = band;
	i++;
out:
	lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
	return ret;
}

/**
 *  @brief This function handles the interrupt. it will change PS
 *  state if applicable. it will wake up main_thread to handle
 *  the interrupt event as well.
 *
 *  @param dev     A pointer to net_device structure
 *  @return 	   n/a
 */
void lbs_interrupt(struct lbs_private *priv)
{
	lbs_deb_enter(LBS_DEB_THREAD);

	lbs_deb_thread("lbs_interrupt: intcounter=%d\n", priv->intcounter);
	priv->intcounter++;
	if (priv->psstate == PS_STATE_SLEEP)
		priv->psstate = PS_STATE_AWAKE;
	wake_up_interruptible(&priv->waitq);

	lbs_deb_leave(LBS_DEB_THREAD);
}
EXPORT_SYMBOL_GPL(lbs_interrupt);

static int __init lbs_init_module(void)
{
	lbs_deb_enter(LBS_DEB_MAIN);
	lbs_debugfs_init();
	lbs_deb_leave(LBS_DEB_MAIN);
	return 0;
}

static void __exit lbs_exit_module(void)
{
	lbs_deb_enter(LBS_DEB_MAIN);
	lbs_debugfs_remove();
	lbs_deb_leave(LBS_DEB_MAIN);
}

/*
 * rtap interface support fuctions
 */

static int lbs_rtap_open(struct net_device *dev)
{
	/* Yes, _stop_ the queue. Because we don't support injection */
	lbs_deb_enter(LBS_DEB_MAIN);
	netif_carrier_off(dev);
	netif_stop_queue(dev);
	lbs_deb_leave(LBS_DEB_LEAVE);
	return 0;
}

static int lbs_rtap_stop(struct net_device *dev)
{
	lbs_deb_enter(LBS_DEB_MAIN);
	lbs_deb_leave(LBS_DEB_MAIN);
	return 0;
}

static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
	netif_stop_queue(dev);
	return NETDEV_TX_BUSY;
}

static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
{
	struct lbs_private *priv = dev->priv;
	lbs_deb_enter(LBS_DEB_NET);
	return &priv->stats;
}


static void lbs_remove_rtap(struct lbs_private *priv)
{
	lbs_deb_enter(LBS_DEB_MAIN);
	if (priv->rtap_net_dev == NULL)
		return;
	unregister_netdev(priv->rtap_net_dev);
	free_netdev(priv->rtap_net_dev);
	priv->rtap_net_dev = NULL;
	lbs_deb_leave(LBS_DEB_MAIN);
}

static int lbs_add_rtap(struct lbs_private *priv)
{
	int ret = 0;
	struct net_device *rtap_dev;