ieee80211_softmac.c

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/* IEEE 802.11 SoftMAC layer
 * Copyright (c) 2005 Andrea Merello <[email protected]>
 *
 * 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;
}

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;
}

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 = kmalloc(p->length, GFP_KERNEL);
    if (param == NULL){
        ret = -ENOMEM;
        goto out;
    }
    if (copy_from_user(param, p->pointer, p->length)) {
        kfree(param);
        ret = -EFAULT;
        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);
}