/* IEEE 802.11 SoftMAC layer
 * Copyright (c) 2005 Andrea Merello <andrea.merello@gmail.com>
 *
 * Mostly extracted from the rtl8180-sa2400 driver for the
 * in-kernel generic ieee802.11 stack.
 *
 * Few lines might be stolen from other part of the ieee80211
 * stack. Copyright who own it's copyright
 *
 * WPA code stolen from the ipw2200 driver.
 * Copyright who own it's copyright.
 *
 * released under the GPL
 */


#include "ieee80211.h"

#include <linux/random.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <asm/uaccess.h>
#include <linux/etherdevice.h>

#include "dot11d.h"
u8 rsn_authen_cipher_suite[16][4] = {
        {0x00,0x0F,0xAC,0x00}, //Use group key, //Reserved
        {0x00,0x0F,0xAC,0x01}, //WEP-40         //RSNA default
        {0x00,0x0F,0xAC,0x02}, //TKIP           //NONE          //{used just as default}
        {0x00,0x0F,0xAC,0x03}, //WRAP-historical
        {0x00,0x0F,0xAC,0x04}, //CCMP
        {0x00,0x0F,0xAC,0x05}, //WEP-104
};

short ieee80211_is_54g(const struct ieee80211_network *net)
{
        return (net->rates_ex_len > 0) || (net->rates_len > 4);
}

short ieee80211_is_shortslot(const struct ieee80211_network *net)
{
        return net->capability & WLAN_CAPABILITY_SHORT_SLOT;
}

/* returns the total length needed for placing the RATE MFIE
 * tag and the EXTENDED RATE MFIE tag if needed.
 * It encludes two bytes per tag for the tag itself and its len
 */
unsigned int ieee80211_MFIE_rate_len(struct ieee80211_device *ieee)
{
        unsigned int rate_len = 0;

        if (ieee->modulation & IEEE80211_CCK_MODULATION)
                rate_len = IEEE80211_CCK_RATE_LEN + 2;

        if (ieee->modulation & IEEE80211_OFDM_MODULATION)

                rate_len += IEEE80211_OFDM_RATE_LEN + 2;

        return rate_len;
}

/* place the MFIE rate, tag to the memory (double) poised.
 * Then it updates the pointer so that
 * it points after the new MFIE tag added.
 */
void ieee80211_MFIE_Brate(struct ieee80211_device *ieee, u8 **tag_p)
{
        u8 *tag = *tag_p;

        if (ieee->modulation & IEEE80211_CCK_MODULATION){
                *tag++ = MFIE_TYPE_RATES;
                *tag++ = 4;
                *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
                *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
                *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
                *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
        }

        /* We may add an option for custom rates that specific HW might support */
        *tag_p = tag;
}

void ieee80211_MFIE_Grate(struct ieee80211_device *ieee, u8 **tag_p)
{
        u8 *tag = *tag_p;

                if (ieee->modulation & IEEE80211_OFDM_MODULATION){

                *tag++ = MFIE_TYPE_RATES_EX;
                *tag++ = 8;
                *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_6MB;
                *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_9MB;
                *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_12MB;
                *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_18MB;
                *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_24MB;
                *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_36MB;
                *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_48MB;
                *tag++ = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_54MB;

        }

        /* We may add an option for custom rates that specific HW might support */
        *tag_p = tag;
}


void ieee80211_WMM_Info(struct ieee80211_device *ieee, u8 **tag_p) {
        u8 *tag = *tag_p;

        *tag++ = MFIE_TYPE_GENERIC; //0
        *tag++ = 7;
        *tag++ = 0x00;
        *tag++ = 0x50;
        *tag++ = 0xf2;
        *tag++ = 0x02;//5
        *tag++ = 0x00;
        *tag++ = 0x01;
#ifdef SUPPORT_USPD
        if(ieee->current_network.wmm_info & 0x80) {
                *tag++ = 0x0f|MAX_SP_Len;
        } else {
                *tag++ = MAX_SP_Len;
        }
#else
        *tag++ = MAX_SP_Len;
#endif
        *tag_p = tag;
}

void ieee80211_TURBO_Info(struct ieee80211_device *ieee, u8 **tag_p) {
        u8 *tag = *tag_p;

        *tag++ = MFIE_TYPE_GENERIC; //0
        *tag++ = 7;
        *tag++ = 0x00;
        *tag++ = 0xe0;
        *tag++ = 0x4c;
        *tag++ = 0x01;//5
        *tag++ = 0x02;
        *tag++ = 0x11;
        *tag++ = 0x00;

        *tag_p = tag;
        printk(KERN_ALERT "This is enable turbo mode IE process\n");
}

void enqueue_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb)
{
        int nh;
        nh = (ieee->mgmt_queue_head +1) % MGMT_QUEUE_NUM;

/*
 * if the queue is full but we have newer frames then
 * just overwrites the oldest.
 *
 * if (nh == ieee->mgmt_queue_tail)
 *              return -1;
 */
        ieee->mgmt_queue_head = nh;
        ieee->mgmt_queue_ring[nh] = skb;

        //return 0;
}

struct sk_buff *dequeue_mgmt(struct ieee80211_device *ieee)
{
        struct sk_buff *ret;

        if(ieee->mgmt_queue_tail == ieee->mgmt_queue_head)
                return NULL;

        ret = ieee->mgmt_queue_ring[ieee->mgmt_queue_tail];

        ieee->mgmt_queue_tail =
                (ieee->mgmt_queue_tail+1) % MGMT_QUEUE_NUM;

        return ret;
}

void init_mgmt_queue(struct ieee80211_device *ieee)
{
        ieee->mgmt_queue_tail = ieee->mgmt_queue_head = 0;
}


void ieee80211_sta_wakeup(struct ieee80211_device *ieee, short nl);

inline void softmac_mgmt_xmit(struct sk_buff *skb, struct ieee80211_device *ieee)
{
        unsigned long flags;
        short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
        struct ieee80211_hdr_3addr  *header=
                (struct ieee80211_hdr_3addr  *) skb->data;


        spin_lock_irqsave(&ieee->lock, flags);

        /* called with 2nd param 0, no mgmt lock required */
        ieee80211_sta_wakeup(ieee,0);

        if(single){
                if(ieee->queue_stop){

                        enqueue_mgmt(ieee,skb);
                }else{
                        header->seq_ctrl = cpu_to_le16(ieee->seq_ctrl[0]<<4);

                        if (ieee->seq_ctrl[0] == 0xFFF)
                                ieee->seq_ctrl[0] = 0;
                        else
                                ieee->seq_ctrl[0]++;

                        /* avoid watchdog triggers */
                        ieee->dev->trans_start = jiffies;
                        ieee->softmac_data_hard_start_xmit(skb,ieee->dev,ieee->basic_rate);
                }

                spin_unlock_irqrestore(&ieee->lock, flags);
        }else{
                spin_unlock_irqrestore(&ieee->lock, flags);
                spin_lock_irqsave(&ieee->mgmt_tx_lock, flags);

                header->seq_ctrl = cpu_to_le16(ieee->seq_ctrl[0] << 4);

                if (ieee->seq_ctrl[0] == 0xFFF)
                        ieee->seq_ctrl[0] = 0;
                else
                        ieee->seq_ctrl[0]++;

                /* avoid watchdog triggers */
                ieee->dev->trans_start = jiffies;
                ieee->softmac_hard_start_xmit(skb,ieee->dev);

                spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags);
        }
}


inline void softmac_ps_mgmt_xmit(struct sk_buff *skb, struct ieee80211_device *ieee)
{

        short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
        struct ieee80211_hdr_3addr  *header =
                (struct ieee80211_hdr_3addr  *) skb->data;


        if(single){

                header->seq_ctrl = cpu_to_le16(ieee->seq_ctrl[0] << 4);

                if (ieee->seq_ctrl[0] == 0xFFF)
                        ieee->seq_ctrl[0] = 0;
                else
                        ieee->seq_ctrl[0]++;

                /* avoid watchdog triggers */
                ieee->dev->trans_start = jiffies;
                ieee->softmac_data_hard_start_xmit(skb,ieee->dev,ieee->basic_rate);

        }else{

                header->seq_ctrl = cpu_to_le16(ieee->seq_ctrl[0] << 4);

                if (ieee->seq_ctrl[0] == 0xFFF)
                        ieee->seq_ctrl[0] = 0;
                else
                        ieee->seq_ctrl[0]++;

                /* avoid watchdog triggers */
                ieee->dev->trans_start = jiffies;
                ieee->softmac_hard_start_xmit(skb,ieee->dev);

        }
//      dev_kfree_skb_any(skb);//edit by thomas
}
//by amy for power save
inline struct sk_buff *ieee80211_disassociate_skb(
                                                        struct ieee80211_network *beacon,
                                                        struct ieee80211_device *ieee,
                                                        u8      asRsn)
{
        struct sk_buff *skb;
        struct ieee80211_disassoc_frame *disass;

        skb = dev_alloc_skb(sizeof(struct ieee80211_disassoc_frame));
        if (!skb)
                return NULL;

        disass = (struct ieee80211_disassoc_frame *) skb_put(skb,sizeof(struct ieee80211_disassoc_frame));
        disass->header.frame_control = cpu_to_le16(IEEE80211_STYPE_DISASSOC);
        disass->header.duration_id = 0;

        memcpy(disass->header.addr1, beacon->bssid, ETH_ALEN);
        memcpy(disass->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
        memcpy(disass->header.addr3, beacon->bssid, ETH_ALEN);

        disass->reasoncode = asRsn;
        return skb;
}
void
SendDisassociation(
        struct ieee80211_device *ieee,
        u8*                     asSta,
        u8                      asRsn
)
{
        struct ieee80211_network *beacon = &ieee->current_network;
        struct sk_buff *skb;
        skb = ieee80211_disassociate_skb(beacon,ieee,asRsn);
        if (skb){
                softmac_mgmt_xmit(skb, ieee);
                //dev_kfree_skb_any(skb);//edit by thomas
        }
}

//by amy for power save
inline struct sk_buff *ieee80211_probe_req(struct ieee80211_device *ieee)
{
        unsigned int len,rate_len;
        u8 *tag;
        struct sk_buff *skb;
        struct ieee80211_probe_request *req;

        len = ieee->current_network.ssid_len;

        rate_len = ieee80211_MFIE_rate_len(ieee);

        skb = dev_alloc_skb(sizeof(struct ieee80211_probe_request) +
                            2 + len + rate_len);
        if (!skb)
                return NULL;

        req = (struct ieee80211_probe_request *) skb_put(skb,sizeof(struct ieee80211_probe_request));
        req->header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
        req->header.duration_id = 0; //FIXME: is this OK ?

        memset(req->header.addr1, 0xff, ETH_ALEN);
        memcpy(req->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
        memset(req->header.addr3, 0xff, ETH_ALEN);

        tag = (u8 *) skb_put(skb,len+2+rate_len);

        *tag++ = MFIE_TYPE_SSID;
        *tag++ = len;
        memcpy(tag, ieee->current_network.ssid, len);
        tag += len;
        ieee80211_MFIE_Brate(ieee,&tag);
        ieee80211_MFIE_Grate(ieee,&tag);

        return skb;
}

struct sk_buff *ieee80211_get_beacon_(struct ieee80211_device *ieee);

void ext_ieee80211_send_beacon_wq(struct ieee80211_device *ieee)
{
        struct sk_buff *skb;

        //unsigned long flags;

        skb = ieee80211_get_beacon_(ieee);

        if (skb){
                softmac_mgmt_xmit(skb, ieee);
                ieee->softmac_stats.tx_beacons++;
                dev_kfree_skb_any(skb);//edit by thomas
        }


        //printk(KERN_WARNING "[1] beacon sending!\n");
        ieee->beacon_timer.expires = jiffies +
                (MSECS( ieee->current_network.beacon_interval -5));

        //spin_lock_irqsave(&ieee->beacon_lock,flags);
        if(ieee->beacon_txing)
                add_timer(&ieee->beacon_timer);
        //spin_unlock_irqrestore(&ieee->beacon_lock,flags);
}

void ieee80211_send_beacon(struct ieee80211_device *ieee)
{
        struct sk_buff *skb;

        //unsigned long flags;

        skb = ieee80211_get_beacon_(ieee);

        if (skb){
                softmac_mgmt_xmit(skb, ieee);
                ieee->softmac_stats.tx_beacons++;
                dev_kfree_skb_any(skb);//edit by thomas
        }

        //printk(KERN_WARNING "[1] beacon sending!\n");
        ieee->beacon_timer.expires = jiffies +
                (MSECS( ieee->current_network.beacon_interval -5));

        //spin_lock_irqsave(&ieee->beacon_lock,flags);
        if(ieee->beacon_txing)
                add_timer(&ieee->beacon_timer);
        //spin_unlock_irqrestore(&ieee->beacon_lock,flags);
}


void ieee80211_send_beacon_cb(unsigned long _ieee)
{
        struct ieee80211_device *ieee =
                (struct ieee80211_device *) _ieee;
        unsigned long flags;

        spin_lock_irqsave(&ieee->beacon_lock, flags);
        ieee80211_send_beacon(ieee);
        spin_unlock_irqrestore(&ieee->beacon_lock, flags);
}

void ieee80211_send_probe(struct ieee80211_device *ieee)
{
        struct sk_buff *skb;

        skb = ieee80211_probe_req(ieee);
        if (skb){
                softmac_mgmt_xmit(skb, ieee);
                ieee->softmac_stats.tx_probe_rq++;
                //dev_kfree_skb_any(skb);//edit by thomas
        }
}

void ieee80211_send_probe_requests(struct ieee80211_device *ieee)
{
        if (ieee->active_scan && (ieee->softmac_features & IEEE_SOFTMAC_PROBERQ)){
                ieee80211_send_probe(ieee);
                ieee80211_send_probe(ieee);
        }
}

/* this performs syncro scan blocking the caller until all channels
 * in the allowed channel map has been checked.
 */
void ieee80211_softmac_scan_syncro(struct ieee80211_device *ieee)
{
        short ch = 0;
        u8 channel_map[MAX_CHANNEL_NUMBER+1];
        memcpy(channel_map, GET_DOT11D_INFO(ieee)->channel_map, MAX_CHANNEL_NUMBER+1);
        down(&ieee->scan_sem);
//      printk("==================> Sync scan\n");

        while(1)
        {

                do{
                        ch++;
                        if (ch > MAX_CHANNEL_NUMBER)
                                goto out; /* scan completed */

                }while(!channel_map[ch]);
                /* this function can be called in two situations
                 * 1- We have switched to ad-hoc mode and we are
                 *    performing a complete syncro scan before conclude
                 *    there are no interesting cell and to create a
                 *    new one. In this case the link state is
                 *    IEEE80211_NOLINK until we found an interesting cell.
                 *    If so the ieee8021_new_net, called by the RX path
                 *    will set the state to IEEE80211_LINKED, so we stop
                 *    scanning
                 * 2- We are linked and the root uses run iwlist scan.
                 *    So we switch to IEEE80211_LINKED_SCANNING to remember
                 *    that we are still logically linked (not interested in
                 *    new network events, despite for updating the net list,
                 *    but we are temporarily 'unlinked' as the driver shall
                 *    not filter RX frames and the channel is changing.
                 * So the only situation in witch are interested is to check
                 * if the state become LINKED because of the #1 situation
                 */

                if (ieee->state == IEEE80211_LINKED)
                        goto out;

                ieee->set_chan(ieee->dev, ch);
//              printk("=====>channel=%d   ",ch);
                if(channel_map[ch] == 1)
                {
//                      printk("====send probe request\n");
                        ieee80211_send_probe_requests(ieee);
                }
                /* this prevent excessive time wait when we
                 * need to wait for a syncro scan to end..
                 */
                if (ieee->sync_scan_hurryup)
                        goto out;


                msleep_interruptible_rtl(IEEE80211_SOFTMAC_SCAN_TIME);

        }
out:
        ieee->sync_scan_hurryup = 0;
        up(&ieee->scan_sem);
        if(IS_DOT11D_ENABLE(ieee))
                DOT11D_ScanComplete(ieee);
}

void ieee80211_softmac_ips_scan_syncro(struct ieee80211_device *ieee)
{
        int ch;
        unsigned int watch_dog = 0;
        u8 channel_map[MAX_CHANNEL_NUMBER+1];
        memcpy(channel_map, GET_DOT11D_INFO(ieee)->channel_map, MAX_CHANNEL_NUMBER+1);
        down(&ieee->scan_sem);
        ch = ieee->current_network.channel;
//              if(ieee->sync_scan_hurryup)
//      {

//              printk("stop scan sync\n");
//              goto out;
//      }
//      printk("=======hh===============>ips scan\n");
        while(1)
        {
                /* this function can be called in two situations
                 * 1- We have switched to ad-hoc mode and we are
                 *    performing a complete syncro scan before conclude
                 *    there are no interesting cell and to create a
                 *    new one. In this case the link state is
                 *    IEEE80211_NOLINK until we found an interesting cell.
                 *    If so the ieee8021_new_net, called by the RX path
                 *    will set the state to IEEE80211_LINKED, so we stop
                 *    scanning
                 * 2- We are linked and the root uses run iwlist scan.
                 *    So we switch to IEEE80211_LINKED_SCANNING to remember
                 *    that we are still logically linked (not interested in
                 *    new network events, despite for updating the net list,
                 *    but we are temporarily 'unlinked' as the driver shall
                 *    not filter RX frames and the channel is changing.
                 * So the only situation in witch are interested is to check
                 * if the state become LINKED because of the #1 situation
                 */
                if (ieee->state == IEEE80211_LINKED)
                {
                        goto out;
                }
                if(channel_map[ieee->current_network.channel] > 0)
                {
                        ieee->set_chan(ieee->dev, ieee->current_network.channel);
//                      printk("======>channel=%d  ",ieee->current_network.channel);
                }
                if(channel_map[ieee->current_network.channel] == 1)
                {
//                      printk("====send probe request\n");
                        ieee80211_send_probe_requests(ieee);
                }
                /* this prevent excessive time wait when we
                 * need to wait for a syncro scan to end..
                 */
//                if (ieee->sync_scan_hurryup)
//                        goto out;

                msleep_interruptible_rtl(IEEE80211_SOFTMAC_SCAN_TIME);

                do{
                        if (watch_dog++ >= MAX_CHANNEL_NUMBER)
                //      if (++watch_dog >= 15);//MAX_CHANNEL_NUMBER)  //YJ,modified,080630
                                goto out; /* scan completed */

                        ieee->current_network.channel = (ieee->current_network.channel + 1)%MAX_CHANNEL_NUMBER;
                }while(!channel_map[ieee->current_network.channel]);
        }
out:
        //ieee->sync_scan_hurryup = 0;
        //ieee->set_chan(ieee->dev, ch);
        //ieee->current_network.channel = ch;
        ieee->actscanning = false;
        up(&ieee->scan_sem);
        if(IS_DOT11D_ENABLE(ieee))
                DOT11D_ScanComplete(ieee);
}

void ieee80211_softmac_scan_wq(struct work_struct *work)
{
        struct delayed_work *dwork = to_delayed_work(work);
        struct ieee80211_device *ieee = container_of(dwork, struct ieee80211_device, softmac_scan_wq);
        static short watchdog = 0;
        u8 channel_map[MAX_CHANNEL_NUMBER+1];
        memcpy(channel_map, GET_DOT11D_INFO(ieee)->channel_map, MAX_CHANNEL_NUMBER+1);
//      printk("ieee80211_softmac_scan_wq ENABLE_IPS\n");
//      printk("in %s\n",__func__);
        down(&ieee->scan_sem);

        do{
                ieee->current_network.channel =
                        (ieee->current_network.channel + 1) % MAX_CHANNEL_NUMBER;
                if (watchdog++ > MAX_CHANNEL_NUMBER)
                                goto out; /* no good chans */

        }while(!channel_map[ieee->current_network.channel]);

        //printk("current_network.channel:%d\n", ieee->current_network.channel);
        if (ieee->scanning == 0 )
        {
                printk("error out, scanning = 0\n");
                goto out;
        }
        ieee->set_chan(ieee->dev, ieee->current_network.channel);
        if(channel_map[ieee->current_network.channel] == 1)
                ieee80211_send_probe_requests(ieee);

        queue_delayed_work(ieee->wq, &ieee->softmac_scan_wq, IEEE80211_SOFTMAC_SCAN_TIME);
        up(&ieee->scan_sem);
        return;
out:
        ieee->actscanning = false;
        watchdog = 0;
        ieee->scanning = 0;
        up(&ieee->scan_sem);

        if(IS_DOT11D_ENABLE(ieee))
                DOT11D_ScanComplete(ieee);
        return;
}

void ieee80211_beacons_start(struct ieee80211_device *ieee)
{
        unsigned long flags;

        spin_lock_irqsave(&ieee->beacon_lock,flags);

        ieee->beacon_txing = 1;
        ieee80211_send_beacon(ieee);

        spin_unlock_irqrestore(&ieee->beacon_lock,flags);
}

void ieee80211_beacons_stop(struct ieee80211_device *ieee)
{
        unsigned long flags;

        spin_lock_irqsave(&ieee->beacon_lock,flags);

        ieee->beacon_txing = 0;
        del_timer_sync(&ieee->beacon_timer);

        spin_unlock_irqrestore(&ieee->beacon_lock,flags);

}


void ieee80211_stop_send_beacons(struct ieee80211_device *ieee)
{
        if(ieee->stop_send_beacons)
                ieee->stop_send_beacons(ieee->dev);
        if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
                ieee80211_beacons_stop(ieee);
}


void ieee80211_start_send_beacons(struct ieee80211_device *ieee)
{
        if(ieee->start_send_beacons)
                ieee->start_send_beacons(ieee->dev);
        if(ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
                ieee80211_beacons_start(ieee);
}


void ieee80211_softmac_stop_scan(struct ieee80211_device *ieee)
{
//      unsigned long flags;

        //ieee->sync_scan_hurryup = 1;

        down(&ieee->scan_sem);
//      spin_lock_irqsave(&ieee->lock, flags);

        if (ieee->scanning == 1){
                ieee->scanning = 0;
                //del_timer_sync(&ieee->scan_timer);
                cancel_delayed_work(&ieee->softmac_scan_wq);
        }

//      spin_unlock_irqrestore(&ieee->lock, flags);
        up(&ieee->scan_sem);
}

void ieee80211_stop_scan(struct ieee80211_device *ieee)
{
        if (ieee->softmac_features & IEEE_SOFTMAC_SCAN)
                ieee80211_softmac_stop_scan(ieee);
        else
                ieee->stop_scan(ieee->dev);
}

/* called with ieee->lock held */
void ieee80211_rtl_start_scan(struct ieee80211_device *ieee)
{
        if(IS_DOT11D_ENABLE(ieee) )
        {
                if(IS_COUNTRY_IE_VALID(ieee))
                {
                        RESET_CIE_WATCHDOG(ieee);
                }
        }
        if (ieee->softmac_features & IEEE_SOFTMAC_SCAN){
                if (ieee->scanning == 0)
                {
                        ieee->scanning = 1;
                        //ieee80211_softmac_scan(ieee);
                //      queue_work(ieee->wq, &ieee->softmac_scan_wq);
                //care this,1203,2007,by lawrence
#if 1
                        queue_delayed_work(ieee->wq, &ieee->softmac_scan_wq,0);
#endif
                }
        }else
                ieee->start_scan(ieee->dev);

}

/* called with wx_sem held */
void ieee80211_start_scan_syncro(struct ieee80211_device *ieee)
{
        if(IS_DOT11D_ENABLE(ieee) )
        {
                if(IS_COUNTRY_IE_VALID(ieee))
                {
                        RESET_CIE_WATCHDOG(ieee);
                }
        }
        ieee->sync_scan_hurryup = 0;

        if (ieee->softmac_features & IEEE_SOFTMAC_SCAN)
                ieee80211_softmac_scan_syncro(ieee);
        else
                ieee->scan_syncro(ieee->dev);

}

inline struct sk_buff *ieee80211_authentication_req(struct ieee80211_network *beacon,
        struct ieee80211_device *ieee, int challengelen)
{
        struct sk_buff *skb;
        struct ieee80211_authentication *auth;

        skb = dev_alloc_skb(sizeof(struct ieee80211_authentication) + challengelen);

        if (!skb) return NULL;

        auth = (struct ieee80211_authentication *)
                skb_put(skb, sizeof(struct ieee80211_authentication));

        auth->header.frame_ctl = IEEE80211_STYPE_AUTH;
        if (challengelen) auth->header.frame_ctl |= IEEE80211_FCTL_WEP;

        auth->header.duration_id = 0x013a; //FIXME

        memcpy(auth->header.addr1, beacon->bssid, ETH_ALEN);
        memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
        memcpy(auth->header.addr3, beacon->bssid, ETH_ALEN);

        auth->algorithm = ieee->open_wep ? WLAN_AUTH_OPEN : WLAN_AUTH_SHARED_KEY;

        auth->transaction = cpu_to_le16(ieee->associate_seq);
        ieee->associate_seq++;

        auth->status = cpu_to_le16(WLAN_STATUS_SUCCESS);

        return skb;

}

static struct sk_buff* ieee80211_probe_resp(struct ieee80211_device *ieee, u8 *dest)
{
        u8 *tag;
        int beacon_size;
        struct ieee80211_probe_response *beacon_buf;
        struct sk_buff *skb;
        int encrypt;
        int atim_len,erp_len;
        struct ieee80211_crypt_data* crypt;

        char *ssid = ieee->current_network.ssid;
        int ssid_len = ieee->current_network.ssid_len;
        int rate_len = ieee->current_network.rates_len+2;
        int rate_ex_len = ieee->current_network.rates_ex_len;
        int wpa_ie_len = ieee->wpa_ie_len;
        if(rate_ex_len > 0) rate_ex_len+=2;

        if(ieee->current_network.capability & WLAN_CAPABILITY_IBSS)
                atim_len = 4;
        else
                atim_len = 0;

        if(ieee80211_is_54g(&ieee->current_network))
                erp_len = 3;
        else
                erp_len = 0;

        beacon_size = sizeof(struct ieee80211_probe_response)+
                ssid_len
                +3 //channel
                +rate_len
                +rate_ex_len
                +atim_len
                +wpa_ie_len
                +erp_len;

        skb = dev_alloc_skb(beacon_size);

        if (!skb)
                return NULL;

        beacon_buf = (struct ieee80211_probe_response*) skb_put(skb, beacon_size);

        memcpy (beacon_buf->header.addr1, dest,ETH_ALEN);
        memcpy (beacon_buf->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
        memcpy (beacon_buf->header.addr3, ieee->current_network.bssid, ETH_ALEN);

        beacon_buf->header.duration_id = 0; //FIXME
        beacon_buf->beacon_interval =
                cpu_to_le16(ieee->current_network.beacon_interval);
        beacon_buf->capability =
                cpu_to_le16(ieee->current_network.capability & WLAN_CAPABILITY_IBSS);

        if(ieee->short_slot && (ieee->current_network.capability & WLAN_CAPABILITY_SHORT_SLOT))
                beacon_buf->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT);

        crypt = ieee->crypt[ieee->tx_keyidx];

        encrypt = ieee->host_encrypt && crypt && crypt->ops &&
                ((0 == strcmp(crypt->ops->name, "WEP")) || wpa_ie_len);

        if (encrypt)
                beacon_buf->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);


        beacon_buf->header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_RESP);

        beacon_buf->info_element.id = MFIE_TYPE_SSID;
        beacon_buf->info_element.len = ssid_len;

        tag = (u8*) beacon_buf->info_element.data;

        memcpy(tag, ssid, ssid_len);

        tag += ssid_len;

        *(tag++) = MFIE_TYPE_RATES;
        *(tag++) = rate_len-2;
        memcpy(tag,ieee->current_network.rates,rate_len-2);
        tag+=rate_len-2;

        *(tag++) = MFIE_TYPE_DS_SET;
        *(tag++) = 1;
        *(tag++) = ieee->current_network.channel;

        if(atim_len){
                *(tag++) = MFIE_TYPE_IBSS_SET;
                *(tag++) = 2;
                *((u16*)(tag)) = cpu_to_le16(ieee->current_network.atim_window);
                tag+=2;
        }

        if(erp_len){
                *(tag++) = MFIE_TYPE_ERP;
                *(tag++) = 1;
                *(tag++) = 0;
        }

        if(rate_ex_len){
                *(tag++) = MFIE_TYPE_RATES_EX;
                *(tag++) = rate_ex_len-2;
                memcpy(tag,ieee->current_network.rates_ex,rate_ex_len-2);
                tag+=rate_ex_len-2;
        }

        if (wpa_ie_len)
        {
                if (ieee->iw_mode == IW_MODE_ADHOC)
                {//as Windows will set pairwise key same as the group key which is not allowed in Linux, so set this for IOT issue. WB 2008.07.07
                        memcpy(&ieee->wpa_ie[14], &ieee->wpa_ie[8], 4);
                }

                memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len);
        }

        skb->dev = ieee->dev;
        return skb;
}

static struct sk_buff *ieee80211_assoc_resp(struct ieee80211_device *ieee,
                                            u8 *dest)
{
        struct sk_buff *skb;
        u8* tag;

        struct ieee80211_crypt_data* crypt;
        struct ieee80211_assoc_response_frame *assoc;
        short encrypt;

        unsigned int rate_len = ieee80211_MFIE_rate_len(ieee);
        int len = sizeof(struct ieee80211_assoc_response_frame) + rate_len;

        skb = dev_alloc_skb(len);

        if (!skb)
                return NULL;

        assoc = (struct ieee80211_assoc_response_frame *)
                skb_put(skb,sizeof(struct ieee80211_assoc_response_frame));

        assoc->header.frame_control = cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP);
        memcpy(assoc->header.addr1, dest,ETH_ALEN);
        memcpy(assoc->header.addr3, ieee->dev->dev_addr, ETH_ALEN);
        memcpy(assoc->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
        assoc->capability = cpu_to_le16(ieee->iw_mode == IW_MODE_MASTER ?
                WLAN_CAPABILITY_BSS : WLAN_CAPABILITY_IBSS);


        if(ieee->short_slot)
                assoc->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT);

        if (ieee->host_encrypt)
                crypt = ieee->crypt[ieee->tx_keyidx];
        else crypt = NULL;

        encrypt = ( crypt && crypt->ops);

        if (encrypt)
                assoc->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);

        assoc->status = 0;
        assoc->aid = cpu_to_le16(ieee->assoc_id);
        if (ieee->assoc_id == 0x2007) ieee->assoc_id=0;
        else ieee->assoc_id++;

        tag = (u8*) skb_put(skb, rate_len);

        ieee80211_MFIE_Brate(ieee, &tag);
        ieee80211_MFIE_Grate(ieee, &tag);

        return skb;
}

static struct sk_buff *ieee80211_auth_resp(struct ieee80211_device *ieee,
                                           int status, u8 *dest)
{
        struct sk_buff *skb;
        struct ieee80211_authentication *auth;

        skb = dev_alloc_skb(sizeof(struct ieee80211_authentication)+1);

        if (!skb)
                return NULL;

        skb->len = sizeof(struct ieee80211_authentication);

        auth = (struct ieee80211_authentication *)skb->data;

        auth->status = cpu_to_le16(status);
        auth->transaction = cpu_to_le16(2);
        auth->algorithm = cpu_to_le16(WLAN_AUTH_OPEN);

        memcpy(auth->header.addr3, ieee->dev->dev_addr, ETH_ALEN);
        memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
        memcpy(auth->header.addr1, dest, ETH_ALEN);
        auth->header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_AUTH);
        return skb;


}

struct sk_buff* ieee80211_null_func(struct ieee80211_device *ieee,short pwr)
{
        struct sk_buff *skb;
        struct ieee80211_hdr_3addr* hdr;

        skb = dev_alloc_skb(sizeof(struct ieee80211_hdr_3addr));

        if (!skb)
                return NULL;

        hdr = (struct ieee80211_hdr_3addr*)skb_put(skb,sizeof(struct ieee80211_hdr_3addr));

        memcpy(hdr->addr1, ieee->current_network.bssid, ETH_ALEN);
        memcpy(hdr->addr2, ieee->dev->dev_addr, ETH_ALEN);
        memcpy(hdr->addr3, ieee->current_network.bssid, ETH_ALEN);

        hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
                IEEE80211_STYPE_NULLFUNC | IEEE80211_FCTL_TODS |
                (pwr ? IEEE80211_FCTL_PM:0));

        return skb;


}


void ieee80211_resp_to_assoc_rq(struct ieee80211_device *ieee, u8* dest)
{
        struct sk_buff *buf = ieee80211_assoc_resp(ieee, dest);

        if (buf){
                softmac_mgmt_xmit(buf, ieee);
                dev_kfree_skb_any(buf);//edit by thomas
        }
}


void ieee80211_resp_to_auth(struct ieee80211_device *ieee, int s, u8* dest)
{
        struct sk_buff *buf = ieee80211_auth_resp(ieee, s, dest);

        if (buf){
                softmac_mgmt_xmit(buf, ieee);
                dev_kfree_skb_any(buf);//edit by thomas
        }
}


void ieee80211_resp_to_probe(struct ieee80211_device *ieee, u8 *dest)
{

        struct sk_buff *buf = ieee80211_probe_resp(ieee, dest);

        if (buf) {
                softmac_mgmt_xmit(buf, ieee);
                dev_kfree_skb_any(buf);//edit by thomas
        }
}


inline struct sk_buff *ieee80211_association_req(struct ieee80211_network *beacon,struct ieee80211_device *ieee)
{
        struct sk_buff *skb;
        //unsigned long flags;

        struct ieee80211_assoc_request_frame *hdr;
        u8 *tag;
        //short info_addr = 0;
        //int i;
        //u16 suite_count = 0;
        //u8 suit_select = 0;
        unsigned int wpa_len = beacon->wpa_ie_len;
        //struct net_device *dev = ieee->dev;
        //union iwreq_data wrqu;
        //u8 *buff;
        //u8 *p;
#if 1
        // for testing purpose
        unsigned int rsn_len = beacon->rsn_ie_len;
#else
        unsigned int rsn_len = beacon->rsn_ie_len - 4;
#endif
        unsigned int rate_len = ieee80211_MFIE_rate_len(ieee);
        unsigned int wmm_info_len = beacon->QoS_Enable?9:0;
        unsigned int turbo_info_len = beacon->Turbo_Enable?9:0;

        u8  encry_proto = ieee->wpax_type_notify & 0xff;
        //u8  pairwise_type = (ieee->wpax_type_notify >> 8) & 0xff;
        //u8  authen_type = (ieee->wpax_type_notify >> 16) & 0xff;

        int len = 0;

        //[0] Notify type of encryption: WPA/WPA2
        //[1] pair wise type
        //[2] authen type
        if(ieee->wpax_type_set) {
                if (IEEE_PROTO_WPA == encry_proto) {
                        rsn_len = 0;
                } else if (IEEE_PROTO_RSN == encry_proto) {
                        wpa_len = 0;
                }
        }
        len = sizeof(struct ieee80211_assoc_request_frame)+
                + beacon->ssid_len//essid tagged val
                + rate_len//rates tagged val
                + wpa_len
                + rsn_len
                + wmm_info_len
                + turbo_info_len;

        skb = dev_alloc_skb(len);

        if (!skb)
                return NULL;

        hdr = (struct ieee80211_assoc_request_frame *)
                skb_put(skb, sizeof(struct ieee80211_assoc_request_frame));


        hdr->header.frame_control = IEEE80211_STYPE_ASSOC_REQ;
        hdr->header.duration_id= 37; //FIXME
        memcpy(hdr->header.addr1, beacon->bssid, ETH_ALEN);
        memcpy(hdr->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
        memcpy(hdr->header.addr3, beacon->bssid, ETH_ALEN);
        memcpy(ieee->ap_mac_addr, beacon->bssid, ETH_ALEN);//for HW security, John

        hdr->capability = cpu_to_le16(WLAN_CAPABILITY_BSS);
        if (beacon->capability & WLAN_CAPABILITY_PRIVACY )
                hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
        if (beacon->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
                hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);

        if(ieee->short_slot)
                hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT);

        hdr->listen_interval = 0xa; //FIXME

        hdr->info_element.id = MFIE_TYPE_SSID;

        hdr->info_element.len = beacon->ssid_len;
        tag = skb_put(skb, beacon->ssid_len);
        memcpy(tag, beacon->ssid, beacon->ssid_len);

        tag = skb_put(skb, rate_len);

        ieee80211_MFIE_Brate(ieee, &tag);
        ieee80211_MFIE_Grate(ieee, &tag);

        //add rsn==0 condition for ap's mix security mode(wpa+wpa2), john2007.8.9
        //choose AES encryption as default algorithm while using mixed mode

        tag = skb_put(skb,ieee->wpa_ie_len);
        memcpy(tag,ieee->wpa_ie,ieee->wpa_ie_len);

        tag = skb_put(skb,wmm_info_len);
        if(wmm_info_len) {
          ieee80211_WMM_Info(ieee, &tag);
        }
        tag = skb_put(skb,turbo_info_len);
        if(turbo_info_len) {
                ieee80211_TURBO_Info(ieee, &tag);
        }

        return skb;
}

void ieee80211_associate_abort(struct ieee80211_device *ieee)
{

        unsigned long flags;
        spin_lock_irqsave(&ieee->lock, flags);

        ieee->associate_seq++;

        /* don't scan, and avoid to have the RX path possibly
         * try again to associate. Even do not react to AUTH or
         * ASSOC response. Just wait for the retry wq to be scheduled.
         * Here we will check if there are good nets to associate
         * with, so we retry or just get back to NO_LINK and scanning
         */
        if (ieee->state == IEEE80211_ASSOCIATING_AUTHENTICATING){
                IEEE80211_DEBUG_MGMT("Authentication failed\n");
                ieee->softmac_stats.no_auth_rs++;
        }else{
                IEEE80211_DEBUG_MGMT("Association failed\n");
                ieee->softmac_stats.no_ass_rs++;
        }

        ieee->state = IEEE80211_ASSOCIATING_RETRY;

        queue_delayed_work(ieee->wq, &ieee->associate_retry_wq,IEEE80211_SOFTMAC_ASSOC_RETRY_TIME);

        spin_unlock_irqrestore(&ieee->lock, flags);
}

void ieee80211_associate_abort_cb(unsigned long dev)
{
        ieee80211_associate_abort((struct ieee80211_device *) dev);
}


void ieee80211_associate_step1(struct ieee80211_device *ieee)
{
        struct ieee80211_network *beacon = &ieee->current_network;
        struct sk_buff *skb;

        IEEE80211_DEBUG_MGMT("Stopping scan\n");
        ieee->softmac_stats.tx_auth_rq++;
        skb=ieee80211_authentication_req(beacon, ieee, 0);
        if (!skb){

                ieee80211_associate_abort(ieee);
        }
        else{
                ieee->state = IEEE80211_ASSOCIATING_AUTHENTICATING ;
                IEEE80211_DEBUG_MGMT("Sending authentication request\n");
                //printk("---Sending authentication request\n");
                softmac_mgmt_xmit(skb, ieee);
                //BUGON when you try to add_timer twice, using mod_timer may be better, john0709
                if(!timer_pending(&ieee->associate_timer)){
                        ieee->associate_timer.expires = jiffies + (HZ / 2);
                        add_timer(&ieee->associate_timer);
                }
                //If call dev_kfree_skb_any,a warning will ocur....
                //KERNEL: assertion (!atomic_read(&skb->users)) failed at net/core/dev.c (1708)
                //So ... 1204 by lawrence.
                //printk("\nIn %s,line %d call kfree skb.",__func__,__LINE__);
                //dev_kfree_skb_any(skb);//edit by thomas
        }
}

void ieee80211_rtl_auth_challenge(struct ieee80211_device *ieee, u8 *challenge, int chlen)
{
        u8 *c;
        struct sk_buff *skb;
        struct ieee80211_network *beacon = &ieee->current_network;
//      int hlen = sizeof(struct ieee80211_authentication);
        del_timer_sync(&ieee->associate_timer);
        ieee->associate_seq++;
        ieee->softmac_stats.tx_auth_rq++;

        skb = ieee80211_authentication_req(beacon, ieee, chlen+2);
        if (!skb)
                ieee80211_associate_abort(ieee);
        else{
                c = skb_put(skb, chlen+2);
                *(c++) = MFIE_TYPE_CHALLENGE;
                *(c++) = chlen;
                memcpy(c, challenge, chlen);

                IEEE80211_DEBUG_MGMT("Sending authentication challenge response\n");

                ieee80211_encrypt_fragment(ieee, skb, sizeof(struct ieee80211_hdr_3addr  ));

                softmac_mgmt_xmit(skb, ieee);
                if (!timer_pending(&ieee->associate_timer)){
                //printk("=========>add timer again, to crash\n");
                ieee->associate_timer.expires = jiffies + (HZ / 2);
                add_timer(&ieee->associate_timer);
                }
                dev_kfree_skb_any(skb);//edit by thomas
        }
        kfree(challenge);
}

void ieee80211_associate_step2(struct ieee80211_device *ieee)
{
        struct sk_buff* skb;
        struct ieee80211_network *beacon = &ieee->current_network;

        del_timer_sync(&ieee->associate_timer);

        IEEE80211_DEBUG_MGMT("Sending association request\n");
        ieee->softmac_stats.tx_ass_rq++;
        skb=ieee80211_association_req(beacon, ieee);
        if (!skb)
                ieee80211_associate_abort(ieee);
        else{
                softmac_mgmt_xmit(skb, ieee);
                if (!timer_pending(&ieee->associate_timer)){
                ieee->associate_timer.expires = jiffies + (HZ / 2);
                add_timer(&ieee->associate_timer);
                }
                //dev_kfree_skb_any(skb);//edit by thomas
        }
}

void ieee80211_associate_complete_wq(struct work_struct *work)
{
        struct ieee80211_device *ieee = container_of(work, struct ieee80211_device, associate_complete_wq);

        printk(KERN_INFO "Associated successfully\n");
        if(ieee80211_is_54g(&ieee->current_network) &&
                (ieee->modulation & IEEE80211_OFDM_MODULATION)){

                ieee->rate = 540;
                printk(KERN_INFO"Using G rates\n");
        }else{
                ieee->rate = 110;
                printk(KERN_INFO"Using B rates\n");
        }
        ieee->link_change(ieee->dev);
        notify_wx_assoc_event(ieee);
        if (ieee->data_hard_resume)
                ieee->data_hard_resume(ieee->dev);
        netif_carrier_on(ieee->dev);
}

void ieee80211_associate_complete(struct ieee80211_device *ieee)
{
        int i;
        del_timer_sync(&ieee->associate_timer);

        for(i = 0; i < 6; i++) {
          //ieee->seq_ctrl[i] = 0;
        }
        ieee->state = IEEE80211_LINKED;
        IEEE80211_DEBUG_MGMT("Successfully associated\n");

        queue_work(ieee->wq, &ieee->associate_complete_wq);
}

void ieee80211_associate_procedure_wq(struct work_struct *work)
{
        struct ieee80211_device *ieee = container_of(work, struct ieee80211_device, associate_procedure_wq);

        ieee->sync_scan_hurryup = 1;
        down(&ieee->wx_sem);

        if (ieee->data_hard_stop)
                ieee->data_hard_stop(ieee->dev);

        ieee80211_stop_scan(ieee);
        ieee->set_chan(ieee->dev, ieee->current_network.channel);

        ieee->associate_seq = 1;
        ieee80211_associate_step1(ieee);

        up(&ieee->wx_sem);
}

inline void ieee80211_softmac_new_net(struct ieee80211_device *ieee, struct ieee80211_network *net)
{
        u8 tmp_ssid[IW_ESSID_MAX_SIZE+1];
        int tmp_ssid_len = 0;

        short apset,ssidset,ssidbroad,apmatch,ssidmatch;

        /* we are interested in new new only if we are not associated
         * and we are not associating / authenticating
         */
        if (ieee->state != IEEE80211_NOLINK)
                return;

        if ((ieee->iw_mode == IW_MODE_INFRA) && !(net->capability & WLAN_CAPABILITY_BSS))
                return;

        if ((ieee->iw_mode == IW_MODE_ADHOC) && !(net->capability & WLAN_CAPABILITY_IBSS))
                return;


        if (ieee->iw_mode == IW_MODE_INFRA || ieee->iw_mode == IW_MODE_ADHOC){
                /* if the user specified the AP MAC, we need also the essid
                 * This could be obtained by beacons or, if the network does not
                 * broadcast it, it can be put manually.
                 */
                apset = ieee->wap_set;//(memcmp(ieee->current_network.bssid, zero,ETH_ALEN)!=0 );
                ssidset = ieee->ssid_set;//ieee->current_network.ssid[0] != '\0';
                ssidbroad =  !(net->ssid_len == 0 || net->ssid[0]== '\0');
                apmatch = (memcmp(ieee->current_network.bssid, net->bssid, ETH_ALEN)==0);

                if(ieee->current_network.ssid_len != net->ssid_len)
                        ssidmatch = 0;
                else
                        ssidmatch = (0==strncmp(ieee->current_network.ssid, net->ssid, net->ssid_len));

                //printk("cur: %s, %d, net:%s, %d\n", ieee->current_network.ssid, ieee->current_network.ssid_len, net->ssid, net->ssid_len);
                //printk("apset=%d apmatch=%d ssidset=%d ssidbroad=%d ssidmatch=%d\n",apset,apmatch,ssidset,ssidbroad,ssidmatch);

                if (    /* if the user set the AP check if match.
                         * if the network does not broadcast essid we check the user supplied ANY essid
                         * if the network does broadcast and the user does not set essid it is OK
                         * if the network does broadcast and the user did set essid chech if essid match
                         */
                                ( apset && apmatch &&
                                  ((ssidset && ssidbroad && ssidmatch) || (ssidbroad && !ssidset) || (!ssidbroad && ssidset)) ) ||
                                /* if the ap is not set, check that the user set the bssid
                                 * and the network does broadcast and that those two bssid matches
                                 */
                                (!apset && ssidset && ssidbroad && ssidmatch)
                   ){


                        /* if the essid is hidden replace it with the
                         * essid provided by the user.
                         */
                        if (!ssidbroad){
                                strncpy(tmp_ssid, ieee->current_network.ssid, IW_ESSID_MAX_SIZE);
                                tmp_ssid_len = ieee->current_network.ssid_len;
                        }
                        memcpy(&ieee->current_network, net, sizeof(struct ieee80211_network));

                        if (!ssidbroad){
                                strncpy(ieee->current_network.ssid, tmp_ssid, IW_ESSID_MAX_SIZE);
                                ieee->current_network.ssid_len = tmp_ssid_len;
                        }
                        printk(KERN_INFO"Linking with %s: channel is %d\n",ieee->current_network.ssid,ieee->current_network.channel);

                        if (ieee->iw_mode == IW_MODE_INFRA){
                                ieee->state = IEEE80211_ASSOCIATING;
                                ieee->beinretry = false;
                                queue_work(ieee->wq, &ieee->associate_procedure_wq);
                        }else{
                                if(ieee80211_is_54g(&ieee->current_network) &&
                                                (ieee->modulation & IEEE80211_OFDM_MODULATION)){
                                        ieee->rate = 540;
                                        printk(KERN_INFO"Using G rates\n");
                                }else{
                                        ieee->rate = 110;
                                        printk(KERN_INFO"Using B rates\n");
                                }
                                ieee->state = IEEE80211_LINKED;
                                ieee->beinretry = false;
                        }

                }
        }

}

void ieee80211_softmac_check_all_nets(struct ieee80211_device *ieee)
{
        unsigned long flags;
        struct ieee80211_network *target;

        spin_lock_irqsave(&ieee->lock, flags);
        list_for_each_entry(target, &ieee->network_list, list) {

                /* if the state become different that NOLINK means
                 * we had found what we are searching for
                 */

                if (ieee->state != IEEE80211_NOLINK)
                        break;

                if (ieee->scan_age == 0 || time_after(target->last_scanned + ieee->scan_age, jiffies))
                        ieee80211_softmac_new_net(ieee, target);
        }

        spin_unlock_irqrestore(&ieee->lock, flags);

}


static inline u16 auth_parse(struct sk_buff *skb, u8** challenge, int *chlen)
{
        struct ieee80211_authentication *a;
        u8 *t;
        if (skb->len <  (sizeof(struct ieee80211_authentication)-sizeof(struct ieee80211_info_element))){
                IEEE80211_DEBUG_MGMT("invalid len in auth resp: %d\n",skb->len);
                return 0xcafe;
        }
        *challenge = NULL;
        a = (struct ieee80211_authentication*) skb->data;
        if(skb->len > (sizeof(struct ieee80211_authentication) +3)){
                t = skb->data + sizeof(struct ieee80211_authentication);

                if(*(t++) == MFIE_TYPE_CHALLENGE){
                        *chlen = *(t++);
                        *challenge = kmemdup(t, *chlen, GFP_ATOMIC);
                        if (!*challenge)
                                return -ENOMEM;
                }
        }

        return cpu_to_le16(a->status);

}


int auth_rq_parse(struct sk_buff *skb,u8* dest)
{
        struct ieee80211_authentication *a;

        if (skb->len <  (sizeof(struct ieee80211_authentication)-sizeof(struct ieee80211_info_element))){
                IEEE80211_DEBUG_MGMT("invalid len in auth request: %d\n",skb->len);
                return -1;
        }
        a = (struct ieee80211_authentication*) skb->data;

        memcpy(dest,a->header.addr2, ETH_ALEN);

        if (le16_to_cpu(a->algorithm) != WLAN_AUTH_OPEN)
                return  WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;

        return WLAN_STATUS_SUCCESS;
}

static short probe_rq_parse(struct ieee80211_device *ieee, struct sk_buff *skb, u8 *src)
{
        u8 *tag;
        u8 *skbend;
        u8 *ssid=NULL;
        u8 ssidlen = 0;

        struct ieee80211_hdr_3addr   *header =
                (struct ieee80211_hdr_3addr   *) skb->data;

        if (skb->len < sizeof (struct ieee80211_hdr_3addr  ))
                return -1; /* corrupted */

        memcpy(src,header->addr2, ETH_ALEN);

        skbend = (u8*)skb->data + skb->len;

        tag = skb->data + sizeof (struct ieee80211_hdr_3addr  );

        while (tag+1 < skbend){
                if (*tag == 0){
                        ssid = tag+2;
                        ssidlen = *(tag+1);
                        break;
                }
                tag++; /* point to the len field */
                tag = tag + *(tag); /* point to the last data byte of the tag */
                tag++; /* point to the next tag */
        }

        //IEEE80211DMESG("Card MAC address is "MACSTR, MAC2STR(src));
        if (ssidlen == 0) return 1;

        if (!ssid) return 1; /* ssid not found in tagged param */
        return (!strncmp(ssid, ieee->current_network.ssid, ssidlen));

}

int assoc_rq_parse(struct sk_buff *skb,u8* dest)
{
        struct ieee80211_assoc_request_frame *a;

        if (skb->len < (sizeof(struct ieee80211_assoc_request_frame) -
                sizeof(struct ieee80211_info_element))) {

                IEEE80211_DEBUG_MGMT("invalid len in auth request:%d \n", skb->len);
                return -1;
        }

        a = (struct ieee80211_assoc_request_frame*) skb->data;

        memcpy(dest,a->header.addr2,ETH_ALEN);

        return 0;
}

static inline u16 assoc_parse(struct sk_buff *skb, int *aid)
{
        struct ieee80211_assoc_response_frame *a;
        if (skb->len <  sizeof(struct ieee80211_assoc_response_frame)){
                IEEE80211_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len);
                return 0xcafe;
        }

        a = (struct ieee80211_assoc_response_frame*) skb->data;
        *aid = le16_to_cpu(a->aid) & 0x3fff;
        return le16_to_cpu(a->status);
}

static inline void
ieee80211_rx_probe_rq(struct ieee80211_device *ieee, struct sk_buff *skb)
{
        u8 dest[ETH_ALEN];

        //IEEE80211DMESG("Rx probe");
        ieee->softmac_stats.rx_probe_rq++;
        //DMESG("Dest is "MACSTR, MAC2STR(dest));
        if (probe_rq_parse(ieee, skb, dest)){
                //IEEE80211DMESG("Was for me!");
                ieee->softmac_stats.tx_probe_rs++;
                ieee80211_resp_to_probe(ieee, dest);
        }
}

inline void
ieee80211_rx_auth_rq(struct ieee80211_device *ieee, struct sk_buff *skb)
{
        u8 dest[ETH_ALEN];
        int status;
        //IEEE80211DMESG("Rx probe");
        ieee->softmac_stats.rx_auth_rq++;

        status = auth_rq_parse(skb, dest);
        if (status != -1) {
                ieee80211_resp_to_auth(ieee, status, dest);
        }
        //DMESG("Dest is "MACSTR, MAC2STR(dest));

}

 inline void
ieee80211_rx_assoc_rq(struct ieee80211_device *ieee, struct sk_buff *skb)
{

        u8 dest[ETH_ALEN];
        //unsigned long flags;

        ieee->softmac_stats.rx_ass_rq++;
        if (assoc_rq_parse(skb,dest) != -1){
                ieee80211_resp_to_assoc_rq(ieee, dest);
        }

        printk(KERN_INFO"New client associated: %pM\n", dest);
}



void ieee80211_sta_ps_send_null_frame(struct ieee80211_device *ieee, short pwr)
{

        struct sk_buff *buf = ieee80211_null_func(ieee, pwr);

        if (buf)
                softmac_ps_mgmt_xmit(buf, ieee);

}


short ieee80211_sta_ps_sleep(struct ieee80211_device *ieee, u32 *time_h, u32 *time_l)
{
        int timeout = 0;

        u8 dtim;
        /*if(ieee->ps == IEEE80211_PS_DISABLED ||
                ieee->iw_mode != IW_MODE_INFRA ||
                ieee->state != IEEE80211_LINKED)

                return 0;
        */
        dtim = ieee->current_network.dtim_data;
        //printk("DTIM\n");

        if(!(dtim & IEEE80211_DTIM_VALID))
                return 0;
        else
                timeout = ieee->current_network.beacon_interval;

        //printk("VALID\n");
        ieee->current_network.dtim_data = IEEE80211_DTIM_INVALID;

        if(dtim & ((IEEE80211_DTIM_UCAST | IEEE80211_DTIM_MBCAST)& ieee->ps))
                return 2;

        if(!time_after(jiffies, ieee->dev->trans_start + MSECS(timeout)))
                return 0;

        if(!time_after(jiffies, ieee->last_rx_ps_time + MSECS(timeout)))
                return 0;

        if((ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE ) &&
                (ieee->mgmt_queue_tail != ieee->mgmt_queue_head))
                return 0;

        if(time_l){
                *time_l = ieee->current_network.last_dtim_sta_time[0]
                        + MSECS((ieee->current_network.beacon_interval));
                        //* ieee->current_network.dtim_period));
                        //printk("beacon_interval:%x, dtim_period:%x, totol to Msecs:%x, HZ:%x\n", ieee->current_network.beacon_interval, ieee->current_network.dtim_period, MSECS(((ieee->current_network.beacon_interval * ieee->current_network.dtim_period))), HZ);
        }

        if(time_h){
                *time_h = ieee->current_network.last_dtim_sta_time[1];
                if(time_l && *time_l < ieee->current_network.last_dtim_sta_time[0])
                        *time_h += 1;
        }

        return 1;


}

inline void ieee80211_sta_ps(struct ieee80211_device *ieee)
{

        u32 th,tl;
        short sleep;

        unsigned long flags,flags2;

        spin_lock_irqsave(&ieee->lock, flags);

        if((ieee->ps == IEEE80211_PS_DISABLED ||

                ieee->iw_mode != IW_MODE_INFRA ||
                ieee->state != IEEE80211_LINKED)){

                //#warning CHECK_LOCK_HERE
                spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);

                ieee80211_sta_wakeup(ieee, 1);

                spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
        }

        sleep = ieee80211_sta_ps_sleep(ieee,&th, &tl);
//      printk("===>%s,%d[2 wake, 1 sleep, 0 do nothing], ieee->sta_sleep = %d\n",__func__, sleep,ieee->sta_sleep);
        /* 2 wake, 1 sleep, 0 do nothing */
        if(sleep == 0)
                goto out;

        if(sleep == 1){

                if(ieee->sta_sleep == 1)
                        ieee->enter_sleep_state(ieee->dev,th,tl);

                else if(ieee->sta_sleep == 0){
        //              printk("send null 1\n");
                        spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);

                        if(ieee->ps_is_queue_empty(ieee->dev)){


                                ieee->sta_sleep = 2;

                                ieee->ps_request_tx_ack(ieee->dev);

                                ieee80211_sta_ps_send_null_frame(ieee,1);

                                ieee->ps_th = th;
                                ieee->ps_tl = tl;
                        }
                        spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);

                }


        }else if(sleep == 2){
//#warning CHECK_LOCK_HERE
                spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);

        //      printk("send wakeup packet\n");
                ieee80211_sta_wakeup(ieee,1);

                spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
        }

out:
        spin_unlock_irqrestore(&ieee->lock, flags);

}

void ieee80211_sta_wakeup(struct ieee80211_device *ieee, short nl)
{
        if(ieee->sta_sleep == 0){
                if(nl){
                //      printk("Warning: driver is probably failing to report TX ps error\n");
                        ieee->ps_request_tx_ack(ieee->dev);
                        ieee80211_sta_ps_send_null_frame(ieee, 0);
                }
                return;

        }

        if(ieee->sta_sleep == 1)
                ieee->sta_wake_up(ieee->dev);

        ieee->sta_sleep = 0;

        if(nl){
                ieee->ps_request_tx_ack(ieee->dev);
                ieee80211_sta_ps_send_null_frame(ieee, 0);
        }
}

void ieee80211_ps_tx_ack(struct ieee80211_device *ieee, short success)
{
        unsigned long flags,flags2;

        spin_lock_irqsave(&ieee->lock, flags);
        if(ieee->sta_sleep == 2){
                /* Null frame with PS bit set */
                if(success){

                //      printk("==================> %s::enter sleep state\n",__func__);
                        ieee->sta_sleep = 1;
                        ieee->enter_sleep_state(ieee->dev,ieee->ps_th,ieee->ps_tl);
                }
                /* if the card report not success we can't be sure the AP
                 * has not RXed so we can't assume the AP believe us awake
                 */
        }
        /* 21112005 - tx again null without PS bit if lost */
        else {

                if((ieee->sta_sleep == 0) && !success){
                        spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
                        ieee80211_sta_ps_send_null_frame(ieee, 0);
                        spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
                }
        }
        spin_unlock_irqrestore(&ieee->lock, flags);
}

inline int
ieee80211_rx_frame_softmac(struct ieee80211_device *ieee, struct sk_buff *skb,
                        struct ieee80211_rx_stats *rx_stats, u16 type,
                        u16 stype)
{
        struct ieee80211_hdr_3addr *header = (struct ieee80211_hdr_3addr *) skb->data;
        u16 errcode;
        u8* challenge=NULL;
        int chlen=0;
        int aid=0;
        struct ieee80211_assoc_response_frame *assoc_resp;
        struct ieee80211_info_element *info_element;

        if(!ieee->proto_started)
                return 0;

        if(ieee->sta_sleep || (ieee->ps != IEEE80211_PS_DISABLED &&
                ieee->iw_mode == IW_MODE_INFRA &&
                ieee->state == IEEE80211_LINKED))

                tasklet_schedule(&ieee->ps_task);

        if (WLAN_FC_GET_STYPE(header->frame_control) != IEEE80211_STYPE_PROBE_RESP &&
                WLAN_FC_GET_STYPE(header->frame_control) != IEEE80211_STYPE_BEACON)
                ieee->last_rx_ps_time = jiffies;

        switch (WLAN_FC_GET_STYPE(header->frame_control)) {

                case IEEE80211_STYPE_ASSOC_RESP:
                case IEEE80211_STYPE_REASSOC_RESP:

                        IEEE80211_DEBUG_MGMT("received [RE]ASSOCIATION RESPONSE (%d)\n",
                                        WLAN_FC_GET_STYPE(header->frame_ctl));
                        if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
                                ieee->state == IEEE80211_ASSOCIATING_AUTHENTICATED &&
                                ieee->iw_mode == IW_MODE_INFRA){
                                if (0 == (errcode=assoc_parse(skb, &aid))){
                                        u16 left;

                                        ieee->state=IEEE80211_LINKED;
                                        ieee->assoc_id = aid;
                                        ieee->softmac_stats.rx_ass_ok++;

                                        //printk(KERN_WARNING "nic_type = %s", (rx_stats->nic_type == 1)?"rtl8187":"rtl8187B");
                                        if(1 == rx_stats->nic_type) //card type is 8187
                                        {
                                                goto associate_complete;
                                        }
                                        assoc_resp = (struct ieee80211_assoc_response_frame*)skb->data;
                                        info_element =  &assoc_resp->info_element;
                                        left = skb->len - ((void*)info_element - (void*)assoc_resp);

                                        while (left >= sizeof(struct ieee80211_info_element_hdr)) {
                                                if (sizeof(struct ieee80211_info_element_hdr) + info_element->len > left) {
                                                        printk(KERN_WARNING "[re]associate response error!");
                                                        return 1;
                                                }
                                                switch (info_element->id) {
                                                  case MFIE_TYPE_GENERIC:
                                                         IEEE80211_DEBUG_SCAN("MFIE_TYPE_GENERIC: %d bytes\n", info_element->len);
                                                        if (info_element->len >= 8  &&
                                                            info_element->data[0] == 0x00 &&
                                                            info_element->data[1] == 0x50 &&
                                                            info_element->data[2] == 0xf2 &&
                                                            info_element->data[3] == 0x02 &&
                                                            info_element->data[4] == 0x01) {
                                                            // Not care about version at present.
                                                            //WMM Parameter Element
                                                            memcpy(ieee->current_network.wmm_param,(u8*)(info_element->data\
                                                                                    + 8),(info_element->len - 8));

                                                            if (((ieee->current_network.wmm_info^info_element->data[6])& \
                                                                                    0x0f)||(!ieee->init_wmmparam_flag)) {
                                                              // refresh parameter element for current network
                                                              // update the register parameter for hardware
                                                              ieee->init_wmmparam_flag = 1;
                                                              queue_work(ieee->wq, &ieee->wmm_param_update_wq);

                                                            }
                                                            //update info_element for current network
                                                            ieee->current_network.wmm_info  = info_element->data[6];
                                                        }
                                                        break;
                                                  default:
                                                        //nothing to do at present!!!
                                                        break;
                                                }

                                                left -= sizeof(struct ieee80211_info_element_hdr) +
                                                        info_element->len;
                                                info_element = (struct ieee80211_info_element *)
                                                        &info_element->data[info_element->len];
                                        }
                                        if(!ieee->init_wmmparam_flag) //legacy AP, reset the AC_xx_param register
                                        {
                                                queue_work(ieee->wq,&ieee->wmm_param_update_wq);
                                                ieee->init_wmmparam_flag = 1;//indicate AC_xx_param upated since last associate
                                        }
associate_complete:
                                        ieee80211_associate_complete(ieee);
                                }else{
                                        ieee->softmac_stats.rx_ass_err++;
                                        IEEE80211_DEBUG_MGMT(
                                                "Association response status code 0x%x\n",
                                                errcode);
                                        ieee80211_associate_abort(ieee);
                                }
                        }
                        break;

                case IEEE80211_STYPE_ASSOC_REQ:
                case IEEE80211_STYPE_REASSOC_REQ:

                        if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
                                ieee->iw_mode == IW_MODE_MASTER)

                                ieee80211_rx_assoc_rq(ieee, skb);
                        break;

                case IEEE80211_STYPE_AUTH:

                        if (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE){
                                if (ieee->state == IEEE80211_ASSOCIATING_AUTHENTICATING &&
                                ieee->iw_mode == IW_MODE_INFRA){

                                                IEEE80211_DEBUG_MGMT("Received authentication response");

                                                if (0 == (errcode=auth_parse(skb, &challenge, &chlen))){
                                                        if(ieee->open_wep || !challenge){
                                                                ieee->state = IEEE80211_ASSOCIATING_AUTHENTICATED;
                                                                ieee->softmac_stats.rx_auth_rs_ok++;

                                                                ieee80211_associate_step2(ieee);
                                                        }else{
                                                                ieee80211_rtl_auth_challenge(ieee, challenge, chlen);
                                                        }
                                                }else{
                                                        ieee->softmac_stats.rx_auth_rs_err++;
                                                        IEEE80211_DEBUG_MGMT("Authentication response status code 0x%x",errcode);
                                                        ieee80211_associate_abort(ieee);
                                                }

                                        }else if (ieee->iw_mode == IW_MODE_MASTER){
                                                ieee80211_rx_auth_rq(ieee, skb);
                                        }
                                }
                        break;

                case IEEE80211_STYPE_PROBE_REQ:

                        if ((ieee->softmac_features & IEEE_SOFTMAC_PROBERS) &&
                                ((ieee->iw_mode == IW_MODE_ADHOC ||
                                ieee->iw_mode == IW_MODE_MASTER) &&
                                ieee->state == IEEE80211_LINKED))

                                ieee80211_rx_probe_rq(ieee, skb);
                        break;

                case IEEE80211_STYPE_DISASSOC:
                case IEEE80211_STYPE_DEAUTH:
                        /* FIXME for now repeat all the association procedure
                        * both for disassociation and deauthentication
                        */
                        if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
                                (ieee->state == IEEE80211_LINKED) &&
                                (ieee->iw_mode == IW_MODE_INFRA) &&
                                (!memcmp(header->addr2,ieee->current_network.bssid,ETH_ALEN))){
                                ieee->state = IEEE80211_ASSOCIATING;
                                ieee->softmac_stats.reassoc++;

                                //notify_wx_assoc_event(ieee);  //YJ,del,080828, do not notify os here
                                queue_work(ieee->wq, &ieee->associate_procedure_wq);
                        }

                        break;

                default:
                        return -1;
                        break;
        }

        //dev_kfree_skb_any(skb);
        return 0;
}



/* following are for a simpler TX queue management.
 * Instead of using netif_[stop/wake]_queue the driver
 * will uses these two function (plus a reset one), that
 * will internally uses the kernel netif_* and takes
 * care of the ieee802.11 fragmentation.
 * So the driver receives a fragment per time and might
 * call the stop function when it want without take care
 * to have enough room to TX an entire packet.
 * This might be useful if each fragment need it's own
 * descriptor, thus just keep a total free memory > than
 * the max fragmentation threshold is not enough.. If the
 * ieee802.11 stack passed a TXB struct then you needed
 * to keep N free descriptors where
 * N = MAX_PACKET_SIZE / MIN_FRAG_TRESHOLD
 * In this way you need just one and the 802.11 stack
 * will take care of buffering fragments and pass them to
 * to the driver later, when it wakes the queue.
 */

void ieee80211_softmac_xmit(struct ieee80211_txb *txb, struct ieee80211_device *ieee)
{


        unsigned long flags;
        int  i;

        spin_lock_irqsave(&ieee->lock,flags);

        /* called with 2nd parm 0, no tx mgmt lock required */
        ieee80211_sta_wakeup(ieee,0);

        for(i = 0; i < txb->nr_frags; i++) {

                if (ieee->queue_stop){
                        ieee->tx_pending.txb = txb;
                        ieee->tx_pending.frag = i;
                        goto exit;
                }else{
                        ieee->softmac_data_hard_start_xmit(
                                txb->fragments[i],
                                ieee->dev,ieee->rate);

                                //(i+1)<txb->nr_frags);
                        ieee->stats.tx_packets++;
                        ieee->stats.tx_bytes += txb->fragments[i]->len;
                        ieee->dev->trans_start = jiffies;
                }
        }

        ieee80211_txb_free(txb);

        exit:
        spin_unlock_irqrestore(&ieee->lock,flags);

}

/* called with ieee->lock acquired */
void ieee80211_resume_tx(struct ieee80211_device *ieee)
{
        int i;
        for(i = ieee->tx_pending.frag; i < ieee->tx_pending.txb->nr_frags; i++) {

                if (ieee->queue_stop){
                        ieee->tx_pending.frag = i;
                        return;
                }else{

                        ieee->softmac_data_hard_start_xmit(
                                ieee->tx_pending.txb->fragments[i],
                                ieee->dev,ieee->rate);
                                //(i+1)<ieee->tx_pending.txb->nr_frags);
                        ieee->stats.tx_packets++;
                        ieee->dev->trans_start = jiffies;
                }
        }


        ieee80211_txb_free(ieee->tx_pending.txb);
        ieee->tx_pending.txb = NULL;
}


void ieee80211_reset_queue(struct ieee80211_device *ieee)
{
        unsigned long flags;

        spin_lock_irqsave(&ieee->lock,flags);
        init_mgmt_queue(ieee);
        if (ieee->tx_pending.txb){
                ieee80211_txb_free(ieee->tx_pending.txb);
                ieee->tx_pending.txb = NULL;
        }
        ieee->queue_stop = 0;
        spin_unlock_irqrestore(&ieee->lock,flags);

}

void ieee80211_rtl_wake_queue(struct ieee80211_device *ieee)
{

        unsigned long flags;
        struct sk_buff *skb;
        struct ieee80211_hdr_3addr  *header;

        spin_lock_irqsave(&ieee->lock,flags);
        if (! ieee->queue_stop) goto exit;

        ieee->queue_stop = 0;

        if(ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE){
                while (!ieee->queue_stop && (skb = dequeue_mgmt(ieee))){

                        header = (struct ieee80211_hdr_3addr  *) skb->data;

                        header->seq_ctrl = cpu_to_le16(ieee->seq_ctrl[0] << 4);

                        if (ieee->seq_ctrl[0] == 0xFFF)
                                ieee->seq_ctrl[0] = 0;
                        else
                                ieee->seq_ctrl[0]++;

                        //printk(KERN_ALERT "ieee80211_wake_queue \n");
                        ieee->softmac_data_hard_start_xmit(skb,ieee->dev,ieee->basic_rate);
                        dev_kfree_skb_any(skb);//edit by thomas
                }
        }
        if (!ieee->queue_stop && ieee->tx_pending.txb)
                ieee80211_resume_tx(ieee);

        if (!ieee->queue_stop && netif_queue_stopped(ieee->dev)){
                ieee->softmac_stats.swtxawake++;
                netif_wake_queue(ieee->dev);
        }

exit :
        spin_unlock_irqrestore(&ieee->lock,flags);
}


void ieee80211_rtl_stop_queue(struct ieee80211_device *ieee)
{
        //unsigned long flags;
        //spin_lock_irqsave(&ieee->lock,flags);

        if (! netif_queue_stopped(ieee->dev)){
                netif_stop_queue(ieee->dev);
                ieee->softmac_stats.swtxstop++;
        }
        ieee->queue_stop = 1;
        //spin_unlock_irqrestore(&ieee->lock,flags);

}


inline void ieee80211_randomize_cell(struct ieee80211_device *ieee)
{

        random_ether_addr(ieee->current_network.bssid);
}

/* called in user context only */
void ieee80211_start_master_bss(struct ieee80211_device *ieee)
{
        ieee->assoc_id = 1;

        if (ieee->current_network.ssid_len == 0){
                strncpy(ieee->current_network.ssid,
                        IEEE80211_DEFAULT_TX_ESSID,
                        IW_ESSID_MAX_SIZE);

                ieee->current_network.ssid_len = strlen(IEEE80211_DEFAULT_TX_ESSID);
                ieee->ssid_set = 1;
        }

        memcpy(ieee->current_network.bssid, ieee->dev->dev_addr, ETH_ALEN);

        ieee->set_chan(ieee->dev, ieee->current_network.channel);
        ieee->state = IEEE80211_LINKED;
        ieee->link_change(ieee->dev);
        notify_wx_assoc_event(ieee);

        if (ieee->data_hard_resume)
                ieee->data_hard_resume(ieee->dev);

        netif_carrier_on(ieee->dev);
}

void ieee80211_start_monitor_mode(struct ieee80211_device *ieee)
{
        if(ieee->raw_tx){

                if (ieee->data_hard_resume)
                        ieee->data_hard_resume(ieee->dev);

                netif_carrier_on(ieee->dev);
        }
}

void ieee80211_start_ibss_wq(struct work_struct *work)
{
        struct delayed_work *dwork = to_delayed_work(work);
        struct ieee80211_device *ieee = container_of(dwork, struct ieee80211_device, start_ibss_wq);

        /* iwconfig mode ad-hoc will schedule this and return
         * on the other hand this will block further iwconfig SET
         * operations because of the wx_sem hold.
         * Anyway some most set operations set a flag to speed-up
         * (abort) this wq (when syncro scanning) before sleeping
         * on the semaphore
         */

        down(&ieee->wx_sem);


        if (ieee->current_network.ssid_len == 0){
                strcpy(ieee->current_network.ssid,IEEE80211_DEFAULT_TX_ESSID);
                ieee->current_network.ssid_len = strlen(IEEE80211_DEFAULT_TX_ESSID);
                ieee->ssid_set = 1;
        }

        /* check if we have this cell in our network list */
        ieee80211_softmac_check_all_nets(ieee);

        if(ieee->state == IEEE80211_NOLINK)
                ieee->current_network.channel = 10;
        /* if not then the state is not linked. Maybe the user switched to
         * ad-hoc mode just after being in monitor mode, or just after
         * being very few time in managed mode (so the card have had no
         * time to scan all the chans..) or we have just run up the iface
         * after setting ad-hoc mode. So we have to give another try..
         * Here, in ibss mode, should be safe to do this without extra care
         * (in bss mode we had to make sure no-one tried to associate when
         * we had just checked the ieee->state and we was going to start the
         * scan) because in ibss mode the ieee80211_new_net function, when
         * finds a good net, just set the ieee->state to IEEE80211_LINKED,
         * so, at worst, we waste a bit of time to initiate an unneeded syncro
         * scan, that will stop at the first round because it sees the state
         * associated.
         */
        if (ieee->state == IEEE80211_NOLINK)
                ieee80211_start_scan_syncro(ieee);

        /* the network definitively is not here.. create a new cell */
        if (ieee->state == IEEE80211_NOLINK){
                printk("creating new IBSS cell\n");
                if(!ieee->wap_set)
                        ieee80211_randomize_cell(ieee);

                if(ieee->modulation & IEEE80211_CCK_MODULATION){

                        ieee->current_network.rates_len = 4;

                        ieee->current_network.rates[0] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
                        ieee->current_network.rates[1] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
                        ieee->current_network.rates[2] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
                        ieee->current_network.rates[3] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;

                }else
                        ieee->current_network.rates_len = 0;

                if(ieee->modulation & IEEE80211_OFDM_MODULATION){
                        ieee->current_network.rates_ex_len = 8;

                        ieee->current_network.rates_ex[0] = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_6MB;
                        ieee->current_network.rates_ex[1] = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_9MB;
                        ieee->current_network.rates_ex[2] = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_12MB;
                        ieee->current_network.rates_ex[3] = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_18MB;
                        ieee->current_network.rates_ex[4] = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_24MB;
                        ieee->current_network.rates_ex[5] = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_36MB;
                        ieee->current_network.rates_ex[6] = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_48MB;
                        ieee->current_network.rates_ex[7] = IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_54MB;

                        ieee->rate = 540;
                }else{
                        ieee->current_network.rates_ex_len = 0;
                        ieee->rate = 110;
                }

                // By default, WMM function will be disabled in IBSS mode
                ieee->current_network.QoS_Enable = 0;

                ieee->current_network.atim_window = 0;
                ieee->current_network.capability = WLAN_CAPABILITY_IBSS;
                if(ieee->short_slot)
                        ieee->current_network.capability |= WLAN_CAPABILITY_SHORT_SLOT;

        }

        ieee->state = IEEE80211_LINKED;
        ieee->set_chan(ieee->dev, ieee->current_network.channel);
        ieee->link_change(ieee->dev);

        notify_wx_assoc_event(ieee);

        ieee80211_start_send_beacons(ieee);
        printk(KERN_WARNING "after sending beacon packet!\n");

        if (ieee->data_hard_resume)
                ieee->data_hard_resume(ieee->dev);

        netif_carrier_on(ieee->dev);

        up(&ieee->wx_sem);
}
inline void ieee80211_start_ibss(struct ieee80211_device *ieee)
{
        queue_delayed_work(ieee->wq, &ieee->start_ibss_wq, 100);
}

/* this is called only in user context, with wx_sem held */
void ieee80211_start_bss(struct ieee80211_device *ieee)
{
        unsigned long flags;
        //
        // Ref: 802.11d 11.1.3.3
        // STA shall not start a BSS unless properly formed Beacon frame including a Country IE.
        //
        if(IS_DOT11D_ENABLE(ieee) && !IS_COUNTRY_IE_VALID(ieee))
        {
                if(! ieee->bGlobalDomain)
                {
                        return;
                }
        }
        /* check if we have already found the net we
         * are interested in (if any).
         * if not (we are disassociated and we are not
         * in associating / authenticating phase) start the background scanning.
         */
        ieee80211_softmac_check_all_nets(ieee);

        /* ensure no-one start an associating process (thus setting
         * the ieee->state to ieee80211_ASSOCIATING) while we
         * have just cheked it and we are going to enable scan.
         * The ieee80211_new_net function is always called with
         * lock held (from both ieee80211_softmac_check_all_nets and
         * the rx path), so we cannot be in the middle of such function
         */
        spin_lock_irqsave(&ieee->lock, flags);

//#ifdef ENABLE_IPS
//      printk("start bss ENABLE_IPS\n");
//#else
        if (ieee->state == IEEE80211_NOLINK){
                ieee->actscanning = true;
                ieee80211_rtl_start_scan(ieee);
        }
//#endif
        spin_unlock_irqrestore(&ieee->lock, flags);
}

/* called only in userspace context */
void ieee80211_disassociate(struct ieee80211_device *ieee)
{
        netif_carrier_off(ieee->dev);

        if (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE)
                        ieee80211_reset_queue(ieee);

        if (ieee->data_hard_stop)
                        ieee->data_hard_stop(ieee->dev);

        if(IS_DOT11D_ENABLE(ieee))
                Dot11d_Reset(ieee);

        ieee->link_change(ieee->dev);
        if (ieee->state == IEEE80211_LINKED)
                notify_wx_assoc_event(ieee);
        ieee->state = IEEE80211_NOLINK;

}
void ieee80211_associate_retry_wq(struct work_struct *work)
{
        struct delayed_work *dwork = to_delayed_work(work);
        struct ieee80211_device *ieee = container_of(dwork, struct ieee80211_device, associate_retry_wq);
        unsigned long flags;
        down(&ieee->wx_sem);
        if(!ieee->proto_started)
                goto exit;
        if(ieee->state != IEEE80211_ASSOCIATING_RETRY)
                goto exit;
        /* until we do not set the state to IEEE80211_NOLINK
        * there are no possibility to have someone else trying
        * to start an association procedure (we get here with
        * ieee->state = IEEE80211_ASSOCIATING).
        * When we set the state to IEEE80211_NOLINK it is possible
        * that the RX path run an attempt to associate, but
        * both ieee80211_softmac_check_all_nets and the
        * RX path works with ieee->lock held so there are no
        * problems. If we are still disassociated then start a scan.
        * the lock here is necessary to ensure no one try to start
        * an association procedure when we have just checked the
        * state and we are going to start the scan.
        */
        ieee->state = IEEE80211_NOLINK;
        ieee->beinretry = true;
        ieee80211_softmac_check_all_nets(ieee);

        spin_lock_irqsave(&ieee->lock, flags);

        if(ieee->state == IEEE80211_NOLINK){
                ieee->beinretry = false;
                ieee->actscanning = true;
                ieee80211_rtl_start_scan(ieee);
        }
        //YJ,add,080828, notify os here
        if(ieee->state == IEEE80211_NOLINK)
        {
                notify_wx_assoc_event(ieee);
        }
        //YJ,add,080828,end
        spin_unlock_irqrestore(&ieee->lock, flags);

exit:
        up(&ieee->wx_sem);
}

struct sk_buff *ieee80211_get_beacon_(struct ieee80211_device *ieee)
{
        u8 broadcast_addr[] = {0xff,0xff,0xff,0xff,0xff,0xff};

        struct sk_buff *skb = NULL;
        struct ieee80211_probe_response *b;

        skb = ieee80211_probe_resp(ieee, broadcast_addr);
        if (!skb)
                return NULL;

        b = (struct ieee80211_probe_response *) skb->data;
        b->header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_BEACON);

        return skb;

}

struct sk_buff *ieee80211_get_beacon(struct ieee80211_device *ieee)
{
        struct sk_buff *skb;
        struct ieee80211_probe_response *b;

        skb = ieee80211_get_beacon_(ieee);
        if(!skb)
                return NULL;

        b = (struct ieee80211_probe_response *) skb->data;
        b->header.seq_ctrl = cpu_to_le16(ieee->seq_ctrl[0] << 4);

        if (ieee->seq_ctrl[0] == 0xFFF)
                ieee->seq_ctrl[0] = 0;
        else
                ieee->seq_ctrl[0]++;

        return skb;
}

void ieee80211_softmac_stop_protocol(struct ieee80211_device *ieee)
{
        ieee->sync_scan_hurryup = 1;
        down(&ieee->wx_sem);
        ieee80211_stop_protocol(ieee);
        up(&ieee->wx_sem);
}


void ieee80211_stop_protocol(struct ieee80211_device *ieee)
{
        if (!ieee->proto_started)
                return;

        ieee->proto_started = 0;

        ieee80211_stop_send_beacons(ieee);
        if((ieee->iw_mode == IW_MODE_INFRA)&&(ieee->state == IEEE80211_LINKED)) {
                SendDisassociation(ieee,NULL,WLAN_REASON_DISASSOC_STA_HAS_LEFT);
        }
        del_timer_sync(&ieee->associate_timer);
        cancel_delayed_work(&ieee->associate_retry_wq);
        cancel_delayed_work(&ieee->start_ibss_wq);
        ieee80211_stop_scan(ieee);

        ieee80211_disassociate(ieee);
}

void ieee80211_softmac_start_protocol(struct ieee80211_device *ieee)
{
        ieee->sync_scan_hurryup = 0;
        down(&ieee->wx_sem);
        ieee80211_start_protocol(ieee);
        up(&ieee->wx_sem);
}

void ieee80211_start_protocol(struct ieee80211_device *ieee)
{
        short ch = 0;
        int i = 0;

        if (ieee->proto_started)
                return;

        ieee->proto_started = 1;

        if (ieee->current_network.channel == 0){
                do{
                        ch++;
                        if (ch > MAX_CHANNEL_NUMBER)
                                return; /* no channel found */

                }while(!GET_DOT11D_INFO(ieee)->channel_map[ch]);

                ieee->current_network.channel = ch;
        }

        if (ieee->current_network.beacon_interval == 0)
                ieee->current_network.beacon_interval = 100;
        ieee->set_chan(ieee->dev,ieee->current_network.channel);

        for(i = 0; i < 17; i++) {
          ieee->last_rxseq_num[i] = -1;
          ieee->last_rxfrag_num[i] = -1;
          ieee->last_packet_time[i] = 0;
        }

        ieee->init_wmmparam_flag = 0;//reinitialize AC_xx_PARAM registers.


        /* if the user set the MAC of the ad-hoc cell and then
         * switch to managed mode, shall we  make sure that association
         * attempts does not fail just because the user provide the essid
         * and the nic is still checking for the AP MAC ??
         */
        switch (ieee->iw_mode) {
                case IW_MODE_AUTO:
                        ieee->iw_mode = IW_MODE_INFRA;
                        //not set break here intentionly
                case IW_MODE_INFRA:
                        ieee80211_start_bss(ieee);
                        break;

                case IW_MODE_ADHOC:
                        ieee80211_start_ibss(ieee);
                        break;

                case IW_MODE_MASTER:
                        ieee80211_start_master_bss(ieee);
                break;

                case IW_MODE_MONITOR:
                        ieee80211_start_monitor_mode(ieee);
                        break;

                default:
                        ieee->iw_mode = IW_MODE_INFRA;
                        ieee80211_start_bss(ieee);
                        break;
        }
}


#define DRV_NAME  "Ieee80211"
void ieee80211_softmac_init(struct ieee80211_device *ieee)
{
        int i;
        memset(&ieee->current_network, 0, sizeof(struct ieee80211_network));

        ieee->state = IEEE80211_NOLINK;
        ieee->sync_scan_hurryup = 0;
        for(i = 0; i < 5; i++) {
          ieee->seq_ctrl[i] = 0;
        }

        ieee->assoc_id = 0;
        ieee->queue_stop = 0;
        ieee->scanning = 0;
        ieee->softmac_features = 0; //so IEEE2100-like driver are happy
        ieee->wap_set = 0;
        ieee->ssid_set = 0;
        ieee->proto_started = 0;
        ieee->basic_rate = IEEE80211_DEFAULT_BASIC_RATE;
        ieee->rate = 3;
//#ifdef ENABLE_LPS
        ieee->ps = IEEE80211_PS_MBCAST|IEEE80211_PS_UNICAST;
//#else
//      ieee->ps = IEEE80211_PS_DISABLED;
//#endif
        ieee->sta_sleep = 0;
//by amy
        ieee->bInactivePs = false;
        ieee->actscanning = false;
        ieee->ListenInterval = 2;
        ieee->NumRxDataInPeriod = 0; //YJ,add,080828
        ieee->NumRxBcnInPeriod = 0; //YJ,add,080828
        ieee->NumRxOkTotal = 0;//+by amy 080312
        ieee->NumRxUnicast = 0;//YJ,add,080828,for keep alive
        ieee->beinretry = false;
        ieee->bHwRadioOff = false;
//by amy

        init_mgmt_queue(ieee);

        ieee->tx_pending.txb = NULL;

        init_timer(&ieee->associate_timer);
        ieee->associate_timer.data = (unsigned long)ieee;
        ieee->associate_timer.function = ieee80211_associate_abort_cb;

        init_timer(&ieee->beacon_timer);
        ieee->beacon_timer.data = (unsigned long) ieee;
        ieee->beacon_timer.function = ieee80211_send_beacon_cb;

        ieee->wq = create_workqueue(DRV_NAME);

        INIT_DELAYED_WORK(&ieee->start_ibss_wq,(void*) ieee80211_start_ibss_wq);
        INIT_WORK(&ieee->associate_complete_wq,(void*) ieee80211_associate_complete_wq);
        INIT_WORK(&ieee->associate_procedure_wq,(void*) ieee80211_associate_procedure_wq);
        INIT_DELAYED_WORK(&ieee->softmac_scan_wq,(void*) ieee80211_softmac_scan_wq);
        INIT_DELAYED_WORK(&ieee->associate_retry_wq,(void*) ieee80211_associate_retry_wq);
        INIT_WORK(&ieee->wx_sync_scan_wq,(void*) ieee80211_wx_sync_scan_wq);
//      INIT_WORK(&ieee->watch_dog_wq,(void*) ieee80211_watch_dog_wq);

        sema_init(&ieee->wx_sem, 1);
        sema_init(&ieee->scan_sem, 1);

        spin_lock_init(&ieee->mgmt_tx_lock);
        spin_lock_init(&ieee->beacon_lock);

        tasklet_init(&ieee->ps_task,
             (void(*)(unsigned long)) ieee80211_sta_ps,
             (unsigned long)ieee);
        ieee->pDot11dInfo = kmalloc(sizeof(RT_DOT11D_INFO), GFP_ATOMIC);
}

void ieee80211_softmac_free(struct ieee80211_device *ieee)
{
        down(&ieee->wx_sem);

        del_timer_sync(&ieee->associate_timer);
        cancel_delayed_work(&ieee->associate_retry_wq);


        //add for RF power on power of by lizhaoming 080512
        cancel_delayed_work(&ieee->GPIOChangeRFWorkItem);

        destroy_workqueue(ieee->wq);
        kfree(ieee->pDot11dInfo);
        up(&ieee->wx_sem);
}

/********************************************************
 * Start of WPA code.                                   *
 * this is stolen from the ipw2200 driver               *
 ********************************************************/


static int ieee80211_wpa_enable(struct ieee80211_device *ieee, int value)
{
        /* This is called when wpa_supplicant loads and closes the driver
         * interface. */
        printk("%s WPA\n",value ? "enabling" : "disabling");
        ieee->wpa_enabled = value;
        return 0;
}


void ieee80211_wpa_assoc_frame(struct ieee80211_device *ieee, char *wpa_ie, int wpa_ie_len)
{
        /* make sure WPA is enabled */
        ieee80211_wpa_enable(ieee, 1);

        ieee80211_disassociate(ieee);
}


static int ieee80211_wpa_mlme(struct ieee80211_device *ieee, int command, int reason)
{

        int ret = 0;

        switch (command) {
        case IEEE_MLME_STA_DEAUTH:
                // silently ignore
                break;

        case IEEE_MLME_STA_DISASSOC:
                ieee80211_disassociate(ieee);
                break;

        default:
                printk("Unknown MLME request: %d\n", command);
                ret = -EOPNOTSUPP;
        }

        return ret;
}


static int ieee80211_wpa_set_wpa_ie(struct ieee80211_device *ieee,
                              struct ieee_param *param, int plen)
{
        u8 *buf;

        if (param->u.wpa_ie.len > MAX_WPA_IE_LEN ||
            (param->u.wpa_ie.len && param->u.wpa_ie.data == NULL))
                return -EINVAL;

        if (param->u.wpa_ie.len) {
                buf = kmemdup(param->u.wpa_ie.data, param->u.wpa_ie.len,
                              GFP_KERNEL);
                if (buf == NULL)
                        return -ENOMEM;

                kfree(ieee->wpa_ie);
                ieee->wpa_ie = buf;
                ieee->wpa_ie_len = param->u.wpa_ie.len;
        } else {
                kfree(ieee->wpa_ie);
                ieee->wpa_ie = NULL;
                ieee->wpa_ie_len = 0;
        }

        ieee80211_wpa_assoc_frame(ieee, ieee->wpa_ie, ieee->wpa_ie_len);
        return 0;
}

#define AUTH_ALG_OPEN_SYSTEM                    0x1
#define AUTH_ALG_SHARED_KEY                     0x2

static int ieee80211_wpa_set_auth_algs(struct ieee80211_device *ieee, int value)
{

        struct ieee80211_security sec = {
                .flags = SEC_AUTH_MODE,
        };
        int ret = 0;

        if (value & AUTH_ALG_SHARED_KEY) {
                sec.auth_mode = WLAN_AUTH_SHARED_KEY;
                ieee->open_wep = 0;
        } else {
                sec.auth_mode = WLAN_AUTH_OPEN;
                ieee->open_wep = 1;
        }

        if (ieee->set_security)
                ieee->set_security(ieee->dev, &sec);
        else
                ret = -EOPNOTSUPP;

        return ret;
}

static int ieee80211_wpa_set_param(struct ieee80211_device *ieee, u8 name, u32 value)
{
        int ret=0;
        unsigned long flags;

        switch (name) {
        case IEEE_PARAM_WPA_ENABLED:
                ret = ieee80211_wpa_enable(ieee, value);
                break;

        case IEEE_PARAM_TKIP_COUNTERMEASURES:
                ieee->tkip_countermeasures=value;
                break;

        case IEEE_PARAM_DROP_UNENCRYPTED: {
                /* HACK:
                 *
                 * wpa_supplicant calls set_wpa_enabled when the driver
                 * is loaded and unloaded, regardless of if WPA is being
                 * used.  No other calls are made which can be used to
                 * determine if encryption will be used or not prior to
                 * association being expected.  If encryption is not being
                 * used, drop_unencrypted is set to false, else true -- we
                 * can use this to determine if the CAP_PRIVACY_ON bit should
                 * be set.
                 */
                struct ieee80211_security sec = {
                        .flags = SEC_ENABLED,
                        .enabled = value,
                };
                ieee->drop_unencrypted = value;
                /* We only change SEC_LEVEL for open mode. Others
                 * are set by ipw_wpa_set_encryption.
                 */
                if (!value) {
                        sec.flags |= SEC_LEVEL;
                        sec.level = SEC_LEVEL_0;
                }
                else {
                        sec.flags |= SEC_LEVEL;
                        sec.level = SEC_LEVEL_1;
                }
                if (ieee->set_security)
                        ieee->set_security(ieee->dev, &sec);
                break;
        }

        case IEEE_PARAM_PRIVACY_INVOKED:
                ieee->privacy_invoked=value;
                break;

        case IEEE_PARAM_AUTH_ALGS:
                ret = ieee80211_wpa_set_auth_algs(ieee, value);
                break;

        case IEEE_PARAM_IEEE_802_1X:
                ieee->ieee802_1x=value;
                break;
        case IEEE_PARAM_WPAX_SELECT:
                // added for WPA2 mixed mode
                //printk(KERN_WARNING "------------------------>wpax value = %x\n", value);
                spin_lock_irqsave(&ieee->wpax_suitlist_lock,flags);
                ieee->wpax_type_set = 1;
                ieee->wpax_type_notify = value;
                spin_unlock_irqrestore(&ieee->wpax_suitlist_lock,flags);
                break;

        default:
                printk("Unknown WPA param: %d\n",name);
                ret = -EOPNOTSUPP;
        }

        return ret;
}

/* implementation borrowed from hostap driver */

static int ieee80211_wpa_set_encryption(struct ieee80211_device *ieee,
                                  struct ieee_param *param, int param_len)
{
        int ret = 0;

        struct ieee80211_crypto_ops *ops;
        struct ieee80211_crypt_data **crypt;

        struct ieee80211_security sec = {
                .flags = 0,
        };

        param->u.crypt.err = 0;
        param->u.crypt.alg[IEEE_CRYPT_ALG_NAME_LEN - 1] = '\0';

        if (param_len !=
            (int) ((char *) param->u.crypt.key - (char *) param) +
            param->u.crypt.key_len) {
                printk("Len mismatch %d, %d\n", param_len,
                               param->u.crypt.key_len);
                return -EINVAL;
        }
        if (is_broadcast_ether_addr(param->sta_addr)) {
                if (param->u.crypt.idx >= WEP_KEYS)
                        return -EINVAL;
                crypt = &ieee->crypt[param->u.crypt.idx];
        } else {
                return -EINVAL;
        }

        if (strcmp(param->u.crypt.alg, "none") == 0) {
                if (crypt) {
                        sec.enabled = 0;
                        // FIXME FIXME
                        //sec.encrypt = 0;
                        sec.level = SEC_LEVEL_0;
                        sec.flags |= SEC_ENABLED | SEC_LEVEL;
                        ieee80211_crypt_delayed_deinit(ieee, crypt);
                }
                goto done;
        }
        sec.enabled = 1;
// FIXME FIXME
//      sec.encrypt = 1;
        sec.flags |= SEC_ENABLED;

        /* IPW HW cannot build TKIP MIC, host decryption still needed. */
        if (!(ieee->host_encrypt || ieee->host_decrypt) &&
            strcmp(param->u.crypt.alg, "TKIP"))
                goto skip_host_crypt;

        ops = ieee80211_get_crypto_ops(param->u.crypt.alg);
        if (ops == NULL && strcmp(param->u.crypt.alg, "WEP") == 0)
                ops = ieee80211_get_crypto_ops(param->u.crypt.alg);
        else if (ops == NULL && strcmp(param->u.crypt.alg, "TKIP") == 0)
                ops = ieee80211_get_crypto_ops(param->u.crypt.alg);
        else if (ops == NULL && strcmp(param->u.crypt.alg, "CCMP") == 0)
                ops = ieee80211_get_crypto_ops(param->u.crypt.alg);
        if (ops == NULL) {
                printk("unknown crypto alg '%s'\n", param->u.crypt.alg);
                param->u.crypt.err = IEEE_CRYPT_ERR_UNKNOWN_ALG;
                ret = -EINVAL;
                goto done;
        }

        if (*crypt == NULL || (*crypt)->ops != ops) {
                struct ieee80211_crypt_data *new_crypt;

                ieee80211_crypt_delayed_deinit(ieee, crypt);

                new_crypt = kmalloc(sizeof(*new_crypt), GFP_KERNEL);
                if (new_crypt == NULL) {
                        ret = -ENOMEM;
                        goto done;
                }
                memset(new_crypt, 0, sizeof(struct ieee80211_crypt_data));
                new_crypt->ops = ops;
                if (new_crypt->ops)
                        new_crypt->priv =
                                new_crypt->ops->init(param->u.crypt.idx);

                if (new_crypt->priv == NULL) {
                        kfree(new_crypt);
                        param->u.crypt.err = IEEE_CRYPT_ERR_CRYPT_INIT_FAILED;
                        ret = -EINVAL;
                        goto done;
                }

                *crypt = new_crypt;
        }

        if (param->u.crypt.key_len > 0 && (*crypt)->ops->set_key &&
            (*crypt)->ops->set_key(param->u.crypt.key,
                                   param->u.crypt.key_len, param->u.crypt.seq,
                                   (*crypt)->priv) < 0) {
                printk("key setting failed\n");
                param->u.crypt.err = IEEE_CRYPT_ERR_KEY_SET_FAILED;
                ret = -EINVAL;
                goto done;
        }

 skip_host_crypt:
        if (param->u.crypt.set_tx) {
                ieee->tx_keyidx = param->u.crypt.idx;
                sec.active_key = param->u.crypt.idx;
                sec.flags |= SEC_ACTIVE_KEY;
        } else
                sec.flags &= ~SEC_ACTIVE_KEY;

        if (param->u.crypt.alg != NULL) {
                memcpy(sec.keys[param->u.crypt.idx],
                       param->u.crypt.key,
                       param->u.crypt.key_len);
                sec.key_sizes[param->u.crypt.idx] = param->u.crypt.key_len;
                sec.flags |= (1 << param->u.crypt.idx);

                if (strcmp(param->u.crypt.alg, "WEP") == 0) {
                        sec.flags |= SEC_LEVEL;
                        sec.level = SEC_LEVEL_1;
                } else if (strcmp(param->u.crypt.alg, "TKIP") == 0) {
                        sec.flags |= SEC_LEVEL;
                        sec.level = SEC_LEVEL_2;
                } else if (strcmp(param->u.crypt.alg, "CCMP") == 0) {
                        sec.flags |= SEC_LEVEL;
                        sec.level = SEC_LEVEL_3;
                }
        }
 done:
        if (ieee->set_security)
                ieee->set_security(ieee->dev, &sec);

        /* Do not reset port if card is in Managed mode since resetting will
         * generate new IEEE 802.11 authentication which may end up in looping
         * with IEEE 802.1X.  If your hardware requires a reset after WEP
         * configuration (for example... Prism2), implement the reset_port in
         * the callbacks structures used to initialize the 802.11 stack. */
        if (ieee->reset_on_keychange &&
            ieee->iw_mode != IW_MODE_INFRA &&
            ieee->reset_port &&
            ieee->reset_port(ieee->dev)) {
                printk("reset_port failed\n");
                param->u.crypt.err = IEEE_CRYPT_ERR_CARD_CONF_FAILED;
                return -EINVAL;
        }

        return ret;
}

int ieee80211_wpa_supplicant_ioctl(struct ieee80211_device *ieee, struct iw_point *p)
{
        struct ieee_param *param;
        int ret=0;

        down(&ieee->wx_sem);
        //IEEE_DEBUG_INFO("wpa_supplicant: len=%d\n", p->length);

        if (p->length < sizeof(struct ieee_param) || !p->pointer){
                ret = -EINVAL;
                goto out;
        }

        param = memdup_user(p->pointer, p->length);
        if (IS_ERR(param)) {
                ret = PTR_ERR(param);
                goto out;
        }

        switch (param->cmd) {

        case IEEE_CMD_SET_WPA_PARAM:
                ret = ieee80211_wpa_set_param(ieee, param->u.wpa_param.name,
                                        param->u.wpa_param.value);
                break;

        case IEEE_CMD_SET_WPA_IE:
                ret = ieee80211_wpa_set_wpa_ie(ieee, param, p->length);
                break;

        case IEEE_CMD_SET_ENCRYPTION:
                ret = ieee80211_wpa_set_encryption(ieee, param, p->length);
                break;

        case IEEE_CMD_MLME:
                ret = ieee80211_wpa_mlme(ieee, param->u.mlme.command,
                                   param->u.mlme.reason_code);
                break;

        default:
                printk("Unknown WPA supplicant request: %d\n",param->cmd);
                ret = -EOPNOTSUPP;
                break;
        }

        if (ret == 0 && copy_to_user(p->pointer, param, p->length))
                ret = -EFAULT;

        kfree(param);
out:
        up(&ieee->wx_sem);

        return ret;
}

void notify_wx_assoc_event(struct ieee80211_device *ieee)
{
        union iwreq_data wrqu;
        wrqu.ap_addr.sa_family = ARPHRD_ETHER;
        if (ieee->state == IEEE80211_LINKED)
                memcpy(wrqu.ap_addr.sa_data, ieee->current_network.bssid, ETH_ALEN);
        else
                memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
        wireless_send_event(ieee->dev, SIOCGIWAP, &wrqu, NULL);
}