/*
 * Merged with mainline ieee80211.h in Aug 2004.  Original ieee802_11
 * remains copyright by the original authors
 *
 * Portions of the merged code are based on Host AP (software wireless
 * LAN access point) driver for Intersil Prism2/2.5/3.
 *
 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
 * <jkmaline@cc.hut.fi>
 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
 *
 * Adaption to a generic IEEE 802.11 stack by James Ketrenos
 * <jketreno@linux.intel.com>
 * Copyright (c) 2004, Intel Corporation
 *
 * Modified for Realtek's wi-fi cards by Andrea Merello
 * <andreamrl@tiscali.it>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation. See README and COPYING for
 * more details.
 */
#ifndef IEEE80211_H
#define IEEE80211_H
#include <linux/if_ether.h> /* ETH_ALEN */
#include <linux/kernel.h>   /* ARRAY_SIZE */
#include <linux/version.h>
#include <linux/module.h>
#include <linux/jiffies.h>
#include <linux/timer.h>
#include <linux/sched.h>
#include <linux/semaphore.h>

#include <linux/delay.h>
#include <linux/wireless.h>
#include <linux/ieee80211.h>

#include "rtl819x_HT.h"
#include "rtl819x_BA.h"
#include "rtl819x_TS.h"

#define KEY_TYPE_NA             0x0
#define KEY_TYPE_WEP40          0x1
#define KEY_TYPE_TKIP           0x2
#define KEY_TYPE_CCMP           0x4
#define KEY_TYPE_WEP104         0x5

#define aSifsTime (((priv->ieee80211->current_network.mode == IEEE_A) || \
                    (priv->ieee80211->current_network.mode == IEEE_N_24G) || \
                    (priv->ieee80211->current_network.mode == IEEE_N_5G)) \
                   ? 16 : 10)

#define MGMT_QUEUE_NUM 5

#define IEEE_CMD_SET_WPA_PARAM                  1
#define IEEE_CMD_SET_WPA_IE                     2
#define IEEE_CMD_SET_ENCRYPTION                 3
#define IEEE_CMD_MLME                           4

#define IEEE_PARAM_WPA_ENABLED                  1
#define IEEE_PARAM_TKIP_COUNTERMEASURES         2
#define IEEE_PARAM_DROP_UNENCRYPTED             3
#define IEEE_PARAM_PRIVACY_INVOKED              4
#define IEEE_PARAM_AUTH_ALGS                    5
#define IEEE_PARAM_IEEE_802_1X                  6
//It should consistent with the driver_XXX.c
//   David, 2006.9.26
#define IEEE_PARAM_WPAX_SELECT                  7
//Added for notify the encryption type selection
//   David, 2006.9.26
#define IEEE_PROTO_WPA                          1
#define IEEE_PROTO_RSN                          2
//Added for notify the encryption type selection
//   David, 2006.9.26
#define IEEE_WPAX_USEGROUP                      0
#define IEEE_WPAX_WEP40                         1
#define IEEE_WPAX_TKIP                          2
#define IEEE_WPAX_WRAP                          3
#define IEEE_WPAX_CCMP                          4
#define IEEE_WPAX_WEP104                        5

#define IEEE_KEY_MGMT_IEEE8021X                 1
#define IEEE_KEY_MGMT_PSK                       2

#define IEEE_MLME_STA_DEAUTH                    1
#define IEEE_MLME_STA_DISASSOC                  2


#define IEEE_CRYPT_ERR_UNKNOWN_ALG              2
#define IEEE_CRYPT_ERR_UNKNOWN_ADDR             3
#define IEEE_CRYPT_ERR_CRYPT_INIT_FAILED        4
#define IEEE_CRYPT_ERR_KEY_SET_FAILED           5
#define IEEE_CRYPT_ERR_TX_KEY_SET_FAILED        6
#define IEEE_CRYPT_ERR_CARD_CONF_FAILED         7


#define IEEE_CRYPT_ALG_NAME_LEN                 16

#define MAX_IE_LEN  0xff

typedef struct ieee_param {
        u32 cmd;
        u8 sta_addr[ETH_ALEN];
        union {
                struct {
                        u8 name;
                        u32 value;
                } wpa_param;
                struct {
                        u32 len;
                        u8 reserved[32];
                        u8 data[0];
                } wpa_ie;
                struct{
                        int command;
                        int reason_code;
                } mlme;
                struct {
                        u8 alg[IEEE_CRYPT_ALG_NAME_LEN];
                        u8 set_tx;
                        u32 err;
                        u8 idx;
                        u8 seq[8]; /* sequence counter (set: RX, get: TX) */
                        u16 key_len;
                        u8 key[0];
                } crypt;
        } u;
}ieee_param;

#define MSECS(t) msecs_to_jiffies(t)
#define msleep_interruptible_rsl  msleep_interruptible

#define IEEE80211_DATA_LEN              2304
/* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
   6.2.1.1.2.

   The figure in section 7.1.2 suggests a body size of up to 2312
   bytes is allowed, which is a bit confusing, I suspect this
   represents the 2304 bytes of real data, plus a possible 8 bytes of
   WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
#define IEEE80211_1ADDR_LEN 10
#define IEEE80211_2ADDR_LEN 16
#define IEEE80211_3ADDR_LEN 24
#define IEEE80211_4ADDR_LEN 30
#define IEEE80211_FCS_LEN    4
#define IEEE80211_HLEN                  IEEE80211_4ADDR_LEN
#define IEEE80211_FRAME_LEN             (IEEE80211_DATA_LEN + IEEE80211_HLEN)
#define IEEE80211_MGMT_HDR_LEN 24
#define IEEE80211_DATA_HDR3_LEN 24
#define IEEE80211_DATA_HDR4_LEN 30

#define MIN_FRAG_THRESHOLD     256U
#define MAX_FRAG_THRESHOLD     2346U


/* Frame control field constants */
#define IEEE80211_FCTL_FRAMETYPE        0x00fc
#define IEEE80211_FCTL_DSTODS           0x0300 //added by david
#define IEEE80211_FCTL_WEP              0x4000

/* management */
#define IEEE80211_STYPE_MANAGE_ACT      0x00D0

/* control */
#define IEEE80211_STYPE_BLOCKACK   0x0094

/* QOS control */
#define IEEE80211_QCTL_TID              0x000F

#define OUI_SUBTYPE_WMM_INFO            0
#define OUI_SUBTYPE_WMM_PARAM   1
#define OUI_SUBTYPE_QOS_CAPABI  5

/* debug macros */
#define CONFIG_IEEE80211_DEBUG
#ifdef CONFIG_IEEE80211_DEBUG
extern u32 ieee80211_debug_level;
#define IEEE80211_DEBUG(level, fmt, args...) \
        do { \
                if (ieee80211_debug_level & (level)) \
                        printk(KERN_DEBUG "ieee80211: " fmt, ## args); \
        } while (0)
#define IEEE80211_DEBUG_DATA(level, data, datalen) \
        do { \
                if ((ieee80211_debug_level & (level)) == (level)) { \
                        u8 *pdata = (u8 *)data; \
                        int i; \
                        printk(KERN_DEBUG "ieee80211: %s()\n", __func__); \
                        for (i = 0; i < (int)(datalen); i++) { \
                                printk("%2x ", pdata[i]); \
                                if ((i + 1) % 16 == 0) \
                                        printk("\n"); \
                        } \
                        printk("\n"); \
                } \
        } while (0)
#else
#define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
#define IEEE80211_DEBUG_DATA(level, data, datalen) do {} while(0)
#endif  /* CONFIG_IEEE80211_DEBUG */

/*
 * To use the debug system;
 *
 * If you are defining a new debug classification, simply add it to the #define
 * list here in the form of:
 *
 * #define IEEE80211_DL_xxxx VALUE
 *
 * shifting value to the left one bit from the previous entry.  xxxx should be
 * the name of the classification (for example, WEP)
 *
 * You then need to either add a IEEE80211_xxxx_DEBUG() macro definition for your
 * classification, or use IEEE80211_DEBUG(IEEE80211_DL_xxxx, ...) whenever you want
 * to send output to that classification.
 *
 * To add your debug level to the list of levels seen when you perform
 *
 * % cat /proc/net/ipw/debug_level
 *
 * you simply need to add your entry to the ipw_debug_levels array.
 *
 * If you do not see debug_level in /proc/net/ipw then you do not have
 * CONFIG_IEEE80211_DEBUG defined in your kernel configuration
 *
 */

#define IEEE80211_DL_INFO          (1<<0)
#define IEEE80211_DL_WX            (1<<1)
#define IEEE80211_DL_SCAN          (1<<2)
#define IEEE80211_DL_STATE         (1<<3)
#define IEEE80211_DL_MGMT          (1<<4)
#define IEEE80211_DL_FRAG          (1<<5)
#define IEEE80211_DL_EAP           (1<<6)
#define IEEE80211_DL_DROP          (1<<7)

#define IEEE80211_DL_TX            (1<<8)
#define IEEE80211_DL_RX            (1<<9)

#define IEEE80211_DL_HT            (1 << 10)
#define IEEE80211_DL_BA            (1 << 11)
#define IEEE80211_DL_TS            (1 << 12)
#define IEEE80211_DL_QOS           (1 << 13)
#define IEEE80211_DL_REORDER       (1 << 14)
#define IEEE80211_DL_IOT           (1 << 15)
#define IEEE80211_DL_IPS           (1 << 16)
#define IEEE80211_DL_TRACE         (1 << 29)
#define IEEE80211_DL_DATA          (1 << 30)
#define IEEE80211_DL_ERR           (1 << 31)

#define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
#define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
#define IEEE80211_DEBUG_INFO(f, a...)   IEEE80211_DEBUG(IEEE80211_DL_INFO, f, ## a)

#define IEEE80211_DEBUG_WX(f, a...)     IEEE80211_DEBUG(IEEE80211_DL_WX, f, ## a)
#define IEEE80211_DEBUG_SCAN(f, a...)   IEEE80211_DEBUG(IEEE80211_DL_SCAN, f, ## a)
#define IEEE80211_DEBUG_STATE(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_STATE, f, ## a)
#define IEEE80211_DEBUG_MGMT(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_MGMT, f, ## a)
#define IEEE80211_DEBUG_FRAG(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_FRAG, f, ## a)
#define IEEE80211_DEBUG_EAP(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_EAP, f, ## a)
#define IEEE80211_DEBUG_DROP(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
#define IEEE80211_DEBUG_TX(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
#define IEEE80211_DEBUG_RX(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
#define IEEE80211_DEBUG_QOS(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_QOS, f, ## a)

#include <linux/netdevice.h>
#include <linux/if_arp.h> /* ARPHRD_ETHER */

#ifndef WIRELESS_SPY
#define WIRELESS_SPY            // enable iwspy support
#endif
#include <net/iw_handler.h>     // new driver API

#ifndef ETH_P_PAE
#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
#endif /* ETH_P_PAE */

#define ETH_P_PREAUTH 0x88C7 /* IEEE 802.11i pre-authentication */

#ifndef ETH_P_80211_RAW
#define ETH_P_80211_RAW (ETH_P_ECONET + 1)
#endif

/* IEEE 802.11 defines */

#define P80211_OUI_LEN 3

struct ieee80211_snap_hdr {

        u8    dsap;   /* always 0xAA */
        u8    ssap;   /* always 0xAA */
        u8    ctrl;   /* always 0x03 */
        u8    oui[P80211_OUI_LEN];    /* organizational universal id */

} __attribute__ ((packed));

#define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)

#define WLAN_FC_GET_VERS(fc) ((fc) & IEEE80211_FCTL_VERS)
#define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
#define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)

#define WLAN_FC_GET_FRAMETYPE(fc) ((fc) & IEEE80211_FCTL_FRAMETYPE)
#define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
#define WLAN_GET_SEQ_SEQ(seq)  (((seq) & IEEE80211_SCTL_SEQ) >> 4)

#define RTL_WLAN_AUTH_LEAP 2

#define WLAN_CAPABILITY_BSS (1<<0)
#define WLAN_CAPABILITY_SHORT_SLOT (1<<10)

#define IEEE80211_STATMASK_SIGNAL (1<<0)
#define IEEE80211_STATMASK_RSSI (1<<1)
#define IEEE80211_STATMASK_NOISE (1<<2)
#define IEEE80211_STATMASK_RATE (1<<3)
#define IEEE80211_STATMASK_WEMASK 0x7

#define IEEE80211_CCK_MODULATION    (1<<0)
#define IEEE80211_OFDM_MODULATION   (1<<1)

#define IEEE80211_24GHZ_BAND     (1<<0)
#define IEEE80211_52GHZ_BAND     (1<<1)

#define IEEE80211_CCK_RATE_LEN                  4
#define IEEE80211_CCK_RATE_1MB                  0x02
#define IEEE80211_CCK_RATE_2MB                  0x04
#define IEEE80211_CCK_RATE_5MB                  0x0B
#define IEEE80211_CCK_RATE_11MB                 0x16
#define IEEE80211_OFDM_RATE_LEN                 8
#define IEEE80211_OFDM_RATE_6MB                 0x0C
#define IEEE80211_OFDM_RATE_9MB                 0x12
#define IEEE80211_OFDM_RATE_12MB                0x18
#define IEEE80211_OFDM_RATE_18MB                0x24
#define IEEE80211_OFDM_RATE_24MB                0x30
#define IEEE80211_OFDM_RATE_36MB                0x48
#define IEEE80211_OFDM_RATE_48MB                0x60
#define IEEE80211_OFDM_RATE_54MB                0x6C
#define IEEE80211_BASIC_RATE_MASK               0x80

#define IEEE80211_CCK_RATE_1MB_MASK             (1<<0)
#define IEEE80211_CCK_RATE_2MB_MASK             (1<<1)
#define IEEE80211_CCK_RATE_5MB_MASK             (1<<2)
#define IEEE80211_CCK_RATE_11MB_MASK            (1<<3)
#define IEEE80211_OFDM_RATE_6MB_MASK            (1<<4)
#define IEEE80211_OFDM_RATE_9MB_MASK            (1<<5)
#define IEEE80211_OFDM_RATE_12MB_MASK           (1<<6)
#define IEEE80211_OFDM_RATE_18MB_MASK           (1<<7)
#define IEEE80211_OFDM_RATE_24MB_MASK           (1<<8)
#define IEEE80211_OFDM_RATE_36MB_MASK           (1<<9)
#define IEEE80211_OFDM_RATE_48MB_MASK           (1<<10)
#define IEEE80211_OFDM_RATE_54MB_MASK           (1<<11)

#define IEEE80211_CCK_RATES_MASK                0x0000000F
#define IEEE80211_CCK_BASIC_RATES_MASK  (IEEE80211_CCK_RATE_1MB_MASK | \
        IEEE80211_CCK_RATE_2MB_MASK)
#define IEEE80211_CCK_DEFAULT_RATES_MASK        (IEEE80211_CCK_BASIC_RATES_MASK | \
        IEEE80211_CCK_RATE_5MB_MASK | \
        IEEE80211_CCK_RATE_11MB_MASK)

#define IEEE80211_OFDM_RATES_MASK               0x00000FF0
#define IEEE80211_OFDM_BASIC_RATES_MASK (IEEE80211_OFDM_RATE_6MB_MASK | \
        IEEE80211_OFDM_RATE_12MB_MASK | \
        IEEE80211_OFDM_RATE_24MB_MASK)
#define IEEE80211_OFDM_DEFAULT_RATES_MASK       (IEEE80211_OFDM_BASIC_RATES_MASK | \
        IEEE80211_OFDM_RATE_9MB_MASK  | \
        IEEE80211_OFDM_RATE_18MB_MASK | \
        IEEE80211_OFDM_RATE_36MB_MASK | \
        IEEE80211_OFDM_RATE_48MB_MASK | \
        IEEE80211_OFDM_RATE_54MB_MASK)
#define IEEE80211_DEFAULT_RATES_MASK (IEEE80211_OFDM_DEFAULT_RATES_MASK | \
                                IEEE80211_CCK_DEFAULT_RATES_MASK)

#define IEEE80211_NUM_OFDM_RATES            8
#define IEEE80211_NUM_CCK_RATES             4
#define IEEE80211_OFDM_SHIFT_MASK_A         4


/* this is stolen and modified from the madwifi driver*/
#define IEEE80211_FC0_TYPE_MASK         0x0c
#define IEEE80211_FC0_TYPE_DATA         0x08
#define IEEE80211_FC0_SUBTYPE_MASK      0xB0
#define IEEE80211_FC0_SUBTYPE_QOS       0x80

#define IEEE80211_QOS_HAS_SEQ(fc) \
        (((fc) & (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == \
         (IEEE80211_FC0_TYPE_DATA | IEEE80211_FC0_SUBTYPE_QOS))

/* this is stolen from ipw2200 driver */
#define IEEE_IBSS_MAC_HASH_SIZE 31
struct ieee_ibss_seq {
        u8 mac[ETH_ALEN];
        u16 seq_num[17];
        u16 frag_num[17];
        unsigned long packet_time[17];
        struct list_head list;
};

/* NOTE: This data is for statistical purposes; not all hardware provides this
 *       information for frames received.  Not setting these will not cause
 *       any adverse affects. */
struct ieee80211_rx_stats {
        u32 mac_time[2];
        s8 rssi;
        u8 signal;
        u8 noise;
        u16 rate; /* in 100 kbps */
        u8 received_channel;
        u8 control;
        u8 mask;
        u8 freq;
        u16 len;
        u64 tsf;
        u32 beacon_time;
        u8 nic_type;

        u16       Length;
        u8        SignalQuality;        /* in 0-100 index */
        /* real power in dBm for this packet, no beautification & aggregation */
        s32       RecvSignalPower;
        s8        RxPower;              /* in dBm Translate from PWdB */
        u8        SignalStrength;       /* in 0-100 index */
        u16       bHwError:1;
        u16       bCRC:1;
        u16       bICV:1;
        u16       bShortPreamble:1;
        u16       Antenna:1;            /* RTL8185 */
        u16       Decrypted:1;          /* RTL8185, RTL8187 */
        u16       Wakeup:1;             /* RTL8185 */
        u16       Reserved0:1;          /* RTL8185 */
        u8        AGC;
        u32       TimeStampLow;
        u32       TimeStampHigh;
        bool      bShift;
        bool      bIsQosData;
        u8        UserPriority;

        /* < 11n or 8190 specific code */
        u8        RxDrvInfoSize;
        u8        RxBufShift;
        bool      bIsAMPDU;
        bool      bFirstMPDU;
        bool      bContainHTC;
        bool      RxIs40MHzPacket;
        u32       RxPWDBAll;
        u8        RxMIMOSignalStrength[4]; /* in 0~100 index */
        s8        RxMIMOSignalQuality[2];
        bool      bPacketMatchBSSID;
        bool      bIsCCK;
        bool      bPacketToSelf;

        u8        *virtual_address;
        /* total packet length: must equal to sum of all FragLength */
        u16       packetlength;
        /* FragLength should equal to PacketLength in non-fragment case */
        u16       fraglength;
        u16       fragoffset;           /* data offset for this fragment */
        u16       ntotalfrag;
        bool      bisrxaggrsubframe;
        bool      bPacketBeacon;        /* for rssi */
        bool      bToSelfBA;            /* for rssi */
        char      cck_adc_pwdb[4];      /* for rx path selection */
        u16       Seq_Num;
        u8        nTotalAggPkt;         /* number of aggregated packets */
};

/* IEEE 802.11 requires that STA supports concurrent reception of at least
 * three fragmented frames. This define can be increased to support more
 * concurrent frames, but it should be noted that each entry can consume about
 * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
#define IEEE80211_FRAG_CACHE_LEN 4

struct ieee80211_frag_entry {
        unsigned long first_frag_time;
        unsigned int seq;
        unsigned int last_frag;
        struct sk_buff *skb;
        u8 src_addr[ETH_ALEN];
        u8 dst_addr[ETH_ALEN];
};

struct ieee80211_stats {
        unsigned int tx_unicast_frames;
        unsigned int tx_multicast_frames;
        unsigned int tx_fragments;
        unsigned int tx_unicast_octets;
        unsigned int tx_multicast_octets;
        unsigned int tx_deferred_transmissions;
        unsigned int tx_single_retry_frames;
        unsigned int tx_multiple_retry_frames;
        unsigned int tx_retry_limit_exceeded;
        unsigned int tx_discards;
        unsigned int rx_unicast_frames;
        unsigned int rx_multicast_frames;
        unsigned int rx_fragments;
        unsigned int rx_unicast_octets;
        unsigned int rx_multicast_octets;
        unsigned int rx_fcs_errors;
        unsigned int rx_discards_no_buffer;
        unsigned int tx_discards_wrong_sa;
        unsigned int rx_discards_undecryptable;
        unsigned int rx_message_in_msg_fragments;
        unsigned int rx_message_in_bad_msg_fragments;
};

struct ieee80211_device;

#include "ieee80211_crypt.h"

#define SEC_KEY_1         (1<<0)
#define SEC_KEY_2         (1<<1)
#define SEC_KEY_3         (1<<2)
#define SEC_KEY_4         (1<<3)
#define SEC_ACTIVE_KEY    (1<<4)
#define SEC_AUTH_MODE     (1<<5)
#define SEC_UNICAST_GROUP (1<<6)
#define SEC_LEVEL         (1<<7)
#define SEC_ENABLED       (1<<8)

#define SEC_LEVEL_0      0 /* None */
#define SEC_LEVEL_1      1 /* WEP 40 and 104 bit */
#define SEC_LEVEL_2      2 /* Level 1 + TKIP */
#define SEC_LEVEL_2_CKIP 3 /* Level 1 + CKIP */
#define SEC_LEVEL_3      4 /* Level 2 + CCMP */

#define WEP_KEYS                4
#define WEP_KEY_LEN             13
#define SCM_KEY_LEN             32

struct ieee80211_security {
        u16 active_key:2,
            enabled:1,
            auth_mode:2,
            auth_algo:4,
            unicast_uses_group:1,
            encrypt:1;
        u8 key_sizes[WEP_KEYS];
        u8 keys[WEP_KEYS][SCM_KEY_LEN];
        u8 level;
        u16 flags;
} __attribute__ ((packed));


/*
 802.11 data frame from AP
      ,-------------------------------------------------------------------.
Bytes |  2   |  2   |    6    |    6    |    6    |  2   | 0..2312 |   4  |
      |------|------|---------|---------|---------|------|---------|------|
Desc. | ctrl | dura |  DA/RA  |   TA    |    SA   | Sequ |  frame  |  fcs |
      |      | tion | (BSSID) |         |         | ence |  data   |      |
      `-------------------------------------------------------------------'
Total: 28-2340 bytes
*/

/* Management Frame Information Element Types */
enum {
        MFIE_TYPE_SSID = 0,
        MFIE_TYPE_RATES = 1,
        MFIE_TYPE_FH_SET = 2,
        MFIE_TYPE_DS_SET = 3,
        MFIE_TYPE_CF_SET = 4,
        MFIE_TYPE_TIM = 5,
        MFIE_TYPE_IBSS_SET = 6,
        MFIE_TYPE_COUNTRY = 7,
        MFIE_TYPE_HOP_PARAMS = 8,
        MFIE_TYPE_HOP_TABLE = 9,
        MFIE_TYPE_REQUEST = 10,
        MFIE_TYPE_CHALLENGE = 16,
        MFIE_TYPE_POWER_CONSTRAINT = 32,
        MFIE_TYPE_POWER_CAPABILITY = 33,
        MFIE_TYPE_TPC_REQUEST = 34,
        MFIE_TYPE_TPC_REPORT = 35,
        MFIE_TYPE_SUPP_CHANNELS = 36,
        MFIE_TYPE_CSA = 37,
        MFIE_TYPE_MEASURE_REQUEST = 38,
        MFIE_TYPE_MEASURE_REPORT = 39,
        MFIE_TYPE_QUIET = 40,
        MFIE_TYPE_IBSS_DFS = 41,
        MFIE_TYPE_ERP = 42,
        MFIE_TYPE_RSN = 48,
        MFIE_TYPE_RATES_EX = 50,
        MFIE_TYPE_HT_CAP= 45,
         MFIE_TYPE_HT_INFO= 61,
         MFIE_TYPE_AIRONET=133,
        MFIE_TYPE_GENERIC = 221,
        MFIE_TYPE_QOS_PARAMETER = 222,
};

/* Minimal header; can be used for passing 802.11 frames with sufficient
 * information to determine what type of underlying data type is actually
 * stored in the data. */
struct rtl_ieee80211_hdr {
        __le16 frame_ctl;
        __le16 duration_id;
        u8 payload[0];
} __attribute__ ((packed));

struct ieee80211_hdr_1addr {
        __le16 frame_ctl;
        __le16 duration_id;
        u8 addr1[ETH_ALEN];
        u8 payload[0];
} __attribute__ ((packed));

struct ieee80211_hdr_2addr {
        __le16 frame_ctl;
        __le16 duration_id;
        u8 addr1[ETH_ALEN];
        u8 addr2[ETH_ALEN];
        u8 payload[0];
} __attribute__ ((packed));

struct ieee80211_hdr_4addr {
        __le16 frame_ctl;
        __le16 duration_id;
        u8 addr1[ETH_ALEN];
        u8 addr2[ETH_ALEN];
        u8 addr3[ETH_ALEN];
        __le16 seq_ctl;
        u8 addr4[ETH_ALEN];
        u8 payload[0];
} __attribute__ ((packed));

struct ieee80211_hdr_3addrqos {
        __le16 frame_ctl;
        __le16 duration_id;
        u8 addr1[ETH_ALEN];
        u8 addr2[ETH_ALEN];
        u8 addr3[ETH_ALEN];
        __le16 seq_ctl;
        u8 payload[0];
        __le16 qos_ctl;
} __attribute__ ((packed));

struct ieee80211_hdr_4addrqos {
        __le16 frame_ctl;
        __le16 duration_id;
        u8 addr1[ETH_ALEN];
        u8 addr2[ETH_ALEN];
        u8 addr3[ETH_ALEN];
        __le16 seq_ctl;
        u8 addr4[ETH_ALEN];
        u8 payload[0];
        __le16 qos_ctl;
} __attribute__ ((packed));

struct ieee80211_info_element {
        u8 id;
        u8 len;
        u8 data[0];
} __attribute__ ((packed));

struct ieee80211_authentication {
        struct ieee80211_hdr_3addr header;
        __le16 algorithm;
        __le16 transaction;
        __le16 status;
        /* challenge */
        struct ieee80211_info_element info_element[0];
} __attribute__ ((packed));

struct ieee80211_disassoc {
        struct ieee80211_hdr_3addr header;
        __le16 reason;
} __attribute__ ((packed));

struct ieee80211_probe_request {
        struct ieee80211_hdr_3addr header;
        /* SSID, supported rates */
        struct ieee80211_info_element info_element[0];
} __attribute__ ((packed));

struct ieee80211_probe_response {
        struct ieee80211_hdr_3addr header;
        u32 time_stamp[2];
        __le16 beacon_interval;
        __le16 capability;
        /* SSID, supported rates, FH params, DS params,
         * CF params, IBSS params, TIM (if beacon), RSN */
        struct ieee80211_info_element info_element[0];
} __attribute__ ((packed));

struct ieee80211_assoc_request_frame {
        struct ieee80211_hdr_3addr header;
        __le16 capability;
        __le16 listen_interval;
        /* SSID, supported rates, RSN */
        struct ieee80211_info_element info_element[0];
} __attribute__ ((packed));

struct ieee80211_reassoc_request_frame {
        struct ieee80211_hdr_3addr header;
        __le16 capability;
        __le16 listen_interval;
        u8 current_ap[ETH_ALEN];
        /* SSID, supported rates, RSN */
        struct ieee80211_info_element info_element[0];
} __attribute__ ((packed));

struct ieee80211_assoc_response_frame {
        struct ieee80211_hdr_3addr header;
        __le16 capability;
        __le16 status;
        __le16 aid;
        struct ieee80211_info_element info_element[0]; /* supported rates */
} __attribute__ ((packed));

struct ieee80211_txb {
        u8 nr_frags;
        u8 encrypted;
        u8 queue_index;
        u8 rts_included;
        u16 reserved;
        __le16 frag_size;
        __le16 payload_size;
        struct sk_buff *fragments[0];
};

#define MAX_SUBFRAME_COUNT                64
struct ieee80211_rxb {
        u8 nr_subframes;
        struct sk_buff *subframes[MAX_SUBFRAME_COUNT];
        u8 dst[ETH_ALEN];
        u8 src[ETH_ALEN];
}__attribute__((packed));

/* SWEEP TABLE ENTRIES NUMBER */
#define MAX_SWEEP_TAB_ENTRIES             42
#define MAX_SWEEP_TAB_ENTRIES_PER_PACKET  7
/* MAX_RATES_LENGTH needs to be 12.  The spec says 8, and many APs
 * only use 8, and then use extended rates for the remaining supported
 * rates.  Other APs, however, stick all of their supported rates on the
 * main rates information element... */
#define MAX_RATES_LENGTH                  ((u8)12)
#define MAX_RATES_EX_LENGTH               ((u8)16)
#define MAX_NETWORK_COUNT                  128

#define MAX_CHANNEL_NUMBER                 161

#define IEEE80211_SOFTMAC_SCAN_TIME        100 /* (HZ / 2) */
#define IEEE80211_SOFTMAC_ASSOC_RETRY_TIME (HZ * 2)

#define CRC_LENGTH                 4U

#define MAX_WPA_IE_LEN 64

#define NETWORK_EMPTY_ESSID     (1 << 0)
#define NETWORK_HAS_OFDM        (1 << 1)
#define NETWORK_HAS_CCK         (1 << 2)

/* QoS structure */
#define NETWORK_HAS_QOS_PARAMETERS      (1 << 3)
#define NETWORK_HAS_QOS_INFORMATION     (1 << 4)
#define NETWORK_HAS_QOS_MASK            (NETWORK_HAS_QOS_PARAMETERS | \
                                         NETWORK_HAS_QOS_INFORMATION)

#define NETWORK_HAS_ERP_VALUE           (1 << 10)

#define QOS_QUEUE_NUM                   4
#define QOS_OUI_LEN                     3
#define QOS_OUI_TYPE                    2
#define QOS_ELEMENT_ID                  221
#define QOS_OUI_INFO_SUB_TYPE           0
#define QOS_OUI_PARAM_SUB_TYPE          1
#define QOS_VERSION_1                   1
#define QOS_AIFSN_MIN_VALUE             2

struct ieee80211_qos_information_element {
        u8 elementID;
        u8 length;
        u8 qui[QOS_OUI_LEN];
        u8 qui_type;
        u8 qui_subtype;
        u8 version;
        u8 ac_info;
} __attribute__ ((packed));

struct ieee80211_qos_ac_parameter {
        u8 aci_aifsn;
        u8 ecw_min_max;
        __le16 tx_op_limit;
} __attribute__ ((packed));

struct ieee80211_qos_parameter_info {
        struct ieee80211_qos_information_element info_element;
        u8 reserved;
        struct ieee80211_qos_ac_parameter ac_params_record[QOS_QUEUE_NUM];
} __attribute__ ((packed));

struct ieee80211_qos_parameters {
        __le16 cw_min[QOS_QUEUE_NUM];
        __le16 cw_max[QOS_QUEUE_NUM];
        u8 aifs[QOS_QUEUE_NUM];
        u8 flag[QOS_QUEUE_NUM];
        __le16 tx_op_limit[QOS_QUEUE_NUM];
} __attribute__ ((packed));

struct ieee80211_qos_data {
        struct ieee80211_qos_parameters parameters;
        int active;
        int supported;
        u8 param_count;
        u8 old_param_count;
};

struct ieee80211_tim_parameters {
        u8 tim_count;
        u8 tim_period;
} __attribute__ ((packed));

struct ieee80211_wmm_ac_param {
        u8 ac_aci_acm_aifsn;
        u8 ac_ecwmin_ecwmax;
        u16 ac_txop_limit;
};

struct ieee80211_wmm_ts_info {
        u8 ac_dir_tid;
        u8 ac_up_psb;
        u8 reserved;
} __attribute__ ((packed));

struct ieee80211_wmm_tspec_elem {
        struct ieee80211_wmm_ts_info ts_info;
        u16 norm_msdu_size;
        u16 max_msdu_size;
        u32 min_serv_inter;
        u32 max_serv_inter;
        u32 inact_inter;
        u32 suspen_inter;
        u32 serv_start_time;
        u32 min_data_rate;
        u32 mean_data_rate;
        u32 peak_data_rate;
        u32 max_burst_size;
        u32 delay_bound;
        u32 min_phy_rate;
        u16 surp_band_allow;
        u16 medium_time;
}__attribute__((packed));

enum eap_type {
        EAP_PACKET = 0,
        EAPOL_START,
        EAPOL_LOGOFF,
        EAPOL_KEY,
        EAPOL_ENCAP_ASF_ALERT
};

static const char *eap_types[] = {
        [EAP_PACKET]            = "EAP-Packet",
        [EAPOL_START]           = "EAPOL-Start",
        [EAPOL_LOGOFF]          = "EAPOL-Logoff",
        [EAPOL_KEY]             = "EAPOL-Key",
        [EAPOL_ENCAP_ASF_ALERT] = "EAPOL-Encap-ASF-Alert"
};

static inline const char *eap_get_type(int type)
{
        return ((u32)type >= ARRAY_SIZE(eap_types)) ? "Unknown" : eap_types[type];
}

struct eapol {
        u8 snap[6];
        u16 ethertype;
        u8 version;
        u8 type;
        u16 length;
} __attribute__ ((packed));

struct ieee80211_softmac_stats {
        unsigned int rx_ass_ok;
        unsigned int rx_ass_err;
        unsigned int rx_probe_rq;
        unsigned int tx_probe_rs;
        unsigned int tx_beacons;
        unsigned int rx_auth_rq;
        unsigned int rx_auth_rs_ok;
        unsigned int rx_auth_rs_err;
        unsigned int tx_auth_rq;
        unsigned int no_auth_rs;
        unsigned int no_ass_rs;
        unsigned int tx_ass_rq;
        unsigned int rx_ass_rq;
        unsigned int tx_probe_rq;
        unsigned int reassoc;
        unsigned int swtxstop;
        unsigned int swtxawake;
        unsigned char CurrentShowTxate;
        unsigned char last_packet_rate;
        unsigned int txretrycount;
};

#define BEACON_PROBE_SSID_ID_POSITION 12

struct ieee80211_info_element_hdr {
        u8 id;
        u8 len;
} __attribute__ ((packed));

/*
 * These are the data types that can make up management packets
 *
        u16 auth_algorithm;
        u16 auth_sequence;
        u16 beacon_interval;
        u16 capability;
        u8 current_ap[ETH_ALEN];
        u16 listen_interval;
        struct {
                u16 association_id:14, reserved:2;
        } __attribute__ ((packed));
        u32 time_stamp[2];
        u16 reason;
        u16 status;
*/

#define IEEE80211_DEFAULT_TX_ESSID "Penguin"
#define IEEE80211_DEFAULT_BASIC_RATE 2 /* 1Mbps */

enum {WMM_all_frame, WMM_two_frame, WMM_four_frame, WMM_six_frame};
#define MAX_SP_Len  (WMM_all_frame << 4)
#define IEEE80211_QOS_TID 0x0f
#define QOS_CTL_NOTCONTAIN_ACK (0x01 << 5)

#define IEEE80211_DTIM_MBCAST 4
#define IEEE80211_DTIM_UCAST 2
#define IEEE80211_DTIM_VALID 1
#define IEEE80211_DTIM_INVALID 0

#define IEEE80211_PS_DISABLED 0
#define IEEE80211_PS_UNICAST IEEE80211_DTIM_UCAST
#define IEEE80211_PS_MBCAST IEEE80211_DTIM_MBCAST

//added by David for QoS 2006/6/30
//#define WMM_Hang_8187
#ifdef WMM_Hang_8187
#undef WMM_Hang_8187
#endif

#define WME_AC_BK   0x00
#define WME_AC_BE   0x01
#define WME_AC_VI   0x02
#define WME_AC_VO   0x03
#define WME_ACI_MASK 0x03
#define WME_AIFSN_MASK 0x03
#define WME_AC_PRAM_LEN 16

//UP Mapping to AC, using in MgntQuery_SequenceNumber() and maybe for DSCP
//#define UP2AC(up)     ((up<3) ? ((up==0)?1:0) : (up>>1))
#define UP2AC(up) (                \
        ((up) < 1) ? WME_AC_BE : \
        ((up) < 3) ? WME_AC_BK : \
        ((up) < 4) ? WME_AC_BE : \
        ((up) < 6) ? WME_AC_VI : \
        WME_AC_VO)

//AC Mapping to UP, using in Tx part for selecting the corresponding TX queue
#define AC2UP(_ac)      (       \
        ((_ac) == WME_AC_VO) ? 6 : \
        ((_ac) == WME_AC_VI) ? 5 : \
        ((_ac) == WME_AC_BK) ? 1 : \
        0)

#define ETHER_ADDR_LEN          6       /* length of an Ethernet address */

/* length of two Ethernet address plus ether type */
#define ETHERNET_HEADER_SIZE    14

struct  ether_header {
        u8 ether_dhost[ETHER_ADDR_LEN];
        u8 ether_shost[ETHER_ADDR_LEN];
        u16 ether_type;
} __attribute__((packed));

#ifndef ETHERTYPE_PAE
#define ETHERTYPE_PAE   0x888e          /* EAPOL PAE/802.1x */
#endif
#ifndef ETHERTYPE_IP
#define ETHERTYPE_IP    0x0800          /* IP protocol */
#endif

struct ieee80211_network {
        /* These entries are used to identify a unique network */
        u8 bssid[ETH_ALEN];
        u8 channel;
        /* Ensure null-terminated for any debug msgs */
        u8 ssid[IW_ESSID_MAX_SIZE + 1];
        u8 ssid_len;

        struct ieee80211_qos_data qos_data;

        /* for LEAP */
        bool    bWithAironetIE;
        bool    bCkipSupported;
        bool    bCcxRmEnable;
        u16     CcxRmState[2];

        /* CCXv4 S59, MBSSID. */
        bool    bMBssidValid;

        u8      MBssidMask;
        u8      MBssid[6];

        /* CCX 2 S38, WLAN Device Version Number element. */
        bool    bWithCcxVerNum;
        u8      BssCcxVerNumber;

        /* These are network statistics */
        struct ieee80211_rx_stats stats;
        u16 capability;
        u8  rates[MAX_RATES_LENGTH];
        u8  rates_len;
        u8  rates_ex[MAX_RATES_EX_LENGTH];
        u8  rates_ex_len;
        unsigned long last_scanned;
        u8  mode;
        u32 flags;
        u32 last_associate;
        u32 time_stamp[2];
        u16 beacon_interval;
        u16 listen_interval;
        u16 atim_window;
        u8  erp_value;
        u8  wpa_ie[MAX_WPA_IE_LEN];
        size_t wpa_ie_len;
        u8  rsn_ie[MAX_WPA_IE_LEN];
        size_t rsn_ie_len;

        struct ieee80211_tim_parameters tim;
        u8  dtim_period;
        u8  dtim_data;
        u32 last_dtim_sta_time[2];

        //appeded for QoS
        u8 wmm_info;
        struct ieee80211_wmm_ac_param wmm_param[4];
        u8 QoS_Enable;
        u8 Turbo_Enable;//enable turbo mode, added by thomas
        u16 CountryIeLen;
        u8 CountryIeBuf[MAX_IE_LEN];

        /* HT Related */
        BSS_HT  bssht;
        /* Added to handle broadcom AP management frame CCK rate. */
        bool broadcom_cap_exist;
        bool realtek_cap_exit;
        bool marvell_cap_exist;
        bool ralink_cap_exist;
        bool atheros_cap_exist;
        bool cisco_cap_exist;
        bool unknown_cap_exist;
        bool berp_info_valid;
        bool buseprotection;

        struct list_head list;  /* put at the end of the structure */
};

enum ieee80211_state {

        /* the card is not linked at all */
        IEEE80211_NOLINK = 0,

        /* IEEE80211_ASSOCIATING* are for BSS client mode
         * the driver shall not perform RX filtering unless
         * the state is LINKED.
         * The driver shall just check for the state LINKED and
         * defaults to NOLINK for ALL the other states (including
         * LINKED_SCANNING)
         */

        /* the association procedure will start (wq scheduling)*/
        IEEE80211_ASSOCIATING,
        IEEE80211_ASSOCIATING_RETRY,

        /* the association procedure is sending AUTH request*/
        IEEE80211_ASSOCIATING_AUTHENTICATING,

        /* the association procedure has successfully authentcated
         * and is sending association request
         */
        IEEE80211_ASSOCIATING_AUTHENTICATED,

        /* the link is ok. the card associated to a BSS or linked
         * to a ibss cell or acting as an AP and creating the bss
         */
        IEEE80211_LINKED,

        /* same as LINKED, but the driver shall apply RX filter
         * rules as we are in NO_LINK mode. As the card is still
         * logically linked, but it is doing a syncro site survey
         * then it will be back to LINKED state.
         */
        IEEE80211_LINKED_SCANNING,

};

#define DEFAULT_MAX_SCAN_AGE (15 * HZ)
#define DEFAULT_FTS 2346

#define CFG_IEEE80211_RESERVE_FCS (1<<0)
#define CFG_IEEE80211_COMPUTE_FCS (1<<1)

#define IEEE80211_24GHZ_MIN_CHANNEL 1
#define IEEE80211_24GHZ_MAX_CHANNEL 14
#define IEEE80211_24GHZ_CHANNELS (IEEE80211_24GHZ_MAX_CHANNEL - \
                                  IEEE80211_24GHZ_MIN_CHANNEL + 1)

#define IEEE80211_52GHZ_MIN_CHANNEL 34
#define IEEE80211_52GHZ_MAX_CHANNEL 165
#define IEEE80211_52GHZ_CHANNELS (IEEE80211_52GHZ_MAX_CHANNEL - \
                                  IEEE80211_52GHZ_MIN_CHANNEL + 1)

typedef struct tx_pending_t{
        int frag;
        struct ieee80211_txb *txb;
}tx_pending_t;

enum {
        COUNTRY_CODE_FCC = 0,
        COUNTRY_CODE_IC = 1,
        COUNTRY_CODE_ETSI = 2,
        COUNTRY_CODE_SPAIN = 3,
        COUNTRY_CODE_FRANCE = 4,
        COUNTRY_CODE_MKK = 5,
        COUNTRY_CODE_MKK1 = 6,
        COUNTRY_CODE_ISRAEL = 7,
        COUNTRY_CODE_TELEC = 8,
        COUNTRY_CODE_MIC = 9,
        COUNTRY_CODE_GLOBAL_DOMAIN = 10,
        COUNTRY_CODE_WORLD_WIDE_13 = 11,
        COUNTRY_CODE_TELEC_NETGEAR = 12,
        COUNTRY_CODE_MAX
};

#define NUM_PMKID_CACHE         16

typedef struct _RT_PMKID_LIST
{
        u8                                              bUsed;
        u8                                              Bssid[6];
        u8                                              PMKID[16];
        u8                                              SsidBuf[33];
        u8*                                             ssid_octet;
        u16                                     ssid_length;
} RT_PMKID_LIST, *PRT_PMKID_LIST;


#include "ieee80211_r8192s.h"

struct ieee80211_device {
        struct net_device *dev;
        struct ieee80211_security sec;

        /* hw security related */
        u8 hwsec_active;
        bool is_silent_reset;
        bool force_mic_error;
        bool is_roaming;
        bool ieee_up;
        bool bSupportRemoteWakeUp;
        RT_PS_MODE dot11PowerSaveMode;
        bool actscanning;
        bool be_scan_inprogress;
        bool beinretry;
        RT_RF_POWER_STATE eRFPowerState;
        u32 RfOffReason;
        bool is_set_key;

        /* 11n HT below */
        PRT_HIGH_THROUGHPUT pHTInfo;
        spinlock_t bw_spinlock;

        spinlock_t reorder_spinlock;
        /*
         * for HT operation rate set, we use this one for HT data rate to
         * separate different descriptors the way fill this is the same as
         * in the IE
         */
        u8      Regdot11HTOperationalRateSet[16];       /* use RATR format */
        u8      dot11HTOperationalRateSet[16];          /* use RATR format */
        u8      RegHTSuppRateSet[16];
        u8      HTCurrentOperaRate;
        u8      HTHighestOperaRate;
        /* for rate operation mode to firmware */
        u8      bTxDisableRateFallBack;
        u8      bTxUseDriverAssingedRate;
        atomic_t        atm_chnlop;
        atomic_t        atm_swbw;

        /* 802.11e and WMM Traffic Stream Info (TX) */
        struct list_head        Tx_TS_Admit_List;
        struct list_head        Tx_TS_Pending_List;
        struct list_head        Tx_TS_Unused_List;
        TX_TS_RECORD            TxTsRecord[TOTAL_TS_NUM];
        /* 802.11e and WMM Traffic Stream Info (RX) */
        struct list_head        Rx_TS_Admit_List;
        struct list_head        Rx_TS_Pending_List;
        struct list_head        Rx_TS_Unused_List;
        RX_TS_RECORD            RxTsRecord[TOTAL_TS_NUM];

        RX_REORDER_ENTRY        RxReorderEntry[128];
        struct list_head        RxReorder_Unused_List;

        /* Qos related */
        /* Force per-packet priority 1~7. (default: 0, not to force it.) */
        u8 ForcedPriority;

        /* Bookkeeping structures */
        struct net_device_stats stats;
        struct ieee80211_stats ieee_stats;
        struct ieee80211_softmac_stats softmac_stats;

        /* Probe / Beacon management */
        struct list_head network_free_list;
        struct list_head network_list;
        struct ieee80211_network *networks;
        int scans;
        int scan_age;

        int iw_mode; /* operating mode (IW_MODE_*) */
        struct iw_spy_data spy_data;

        spinlock_t lock;
        spinlock_t wpax_suitlist_lock;

        int tx_headroom; /* Set to size of any additional room needed at front
                          * of allocated Tx SKBs */
        u32 config;

        /* WEP and other encryption related settings at the device level */
        int open_wep; /* Set to 1 to allow unencrypted frames */
        int auth_mode;
        int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
                                 * WEP key changes */

        /* If the host performs {en,de}cryption, then set to 1 */
        int host_encrypt;
        int host_encrypt_msdu;
        int host_decrypt;
        /* host performs multicast decryption */
        int host_mc_decrypt;

        /* host should strip IV and ICV from protected frames */
        /* meaningful only when hardware decryption is being used */
        int host_strip_iv_icv;

        int host_open_frag;
        int host_build_iv;
        int ieee802_1x; /* is IEEE 802.1X used */

        /* WPA data */
        bool bHalfWirelessN24GMode;
        int wpa_enabled;
        int drop_unencrypted;
        int tkip_countermeasures;
        int privacy_invoked;
        size_t wpa_ie_len;
        u8 *wpa_ie;
        u8 ap_mac_addr[6];
        u16 pairwise_key_type;
        u16 group_key_type;
        struct list_head crypt_deinit_list;
        struct ieee80211_crypt_data *crypt[WEP_KEYS];
        int tx_keyidx; /* default TX key index (crypt[tx_keyidx]) */
        struct timer_list crypt_deinit_timer;
        int crypt_quiesced;

        int bcrx_sta_key; /* use individual keys to override default keys even
                           * with RX of broad/multicast frames */

        RT_PMKID_LIST           PMKIDList[NUM_PMKID_CACHE];
        /* Fragmentation structures */
        // each streaming contain a entry
        struct ieee80211_frag_entry frag_cache[17][IEEE80211_FRAG_CACHE_LEN];
        unsigned int frag_next_idx[17];
        u16 fts; /* Fragmentation Threshold */
#define DEFAULT_RTS_THRESHOLD 2346U
#define MIN_RTS_THRESHOLD 1
#define MAX_RTS_THRESHOLD 2346U
        u16 rts; /* RTS threshold */

        /* Association info */
        u8 bssid[ETH_ALEN];

        /* This stores infos for the current network.
         * Either the network we are associated in INFRASTRUCTURE
         * or the network that we are creating in MASTER mode.
         * ad-hoc is a mixture ;-).
         * Note that in infrastructure mode, even when not associated,
         * fields bssid and essid may be valid (if wpa_set and essid_set
         * are true) as thy carry the value set by the user via iwconfig
         */
        struct ieee80211_network current_network;

        enum ieee80211_state state;

        int short_slot;
        int reg_mode;
        int mode;       /* A, B, G */
        int modulation; /* CCK, OFDM */
        int freq_band;  /* 2.4Ghz, 5.2Ghz, Mixed */
        int abg_true;   /* ABG flag              */

        /* used for forcing the ibss workqueue to terminate
         * without wait for the syncro scan to terminate
         */
        short sync_scan_hurryup;
        u16 scan_watch_dog;
        int perfect_rssi;
        int worst_rssi;

        u16 prev_seq_ctl;       /* used to drop duplicate frames */

        /*
         * map of allowed channels. 0 is dummy, FIXME: remeber to default to
         * a basic channel plan depending of the PHY type
         */
        void *pDot11dInfo;
        bool bGlobalDomain;

        u8   IbssStartChnl;
        u8   ibss_maxjoin_chal;

        int rate;       /* current rate */
        int basic_rate;
        //FIXME: pleace callback, see if redundant with softmac_features
        short active_scan;

        /* this contains flags for selectively enable softmac support */
        u16 softmac_features;

        /* if the sequence control field is not filled by HW */
        u16 seq_ctrl[5];

        /* association procedure transaction sequence number */
        u16 associate_seq;

        /* AID for RTXed association responses */
        u16 assoc_id;

        /* power save mode related*/
        u8 ack_tx_to_ieee;
        short ps;
        short sta_sleep;
        int ps_timeout;
        int ps_period;
        struct tasklet_struct ps_task;
        u32 ps_th;
        u32 ps_tl;

        short raw_tx;
        /* used if IEEE_SOFTMAC_TX_QUEUE is set */
        short queue_stop;
        short scanning;
        short proto_started;

        struct semaphore wx_sem;
        struct semaphore scan_sem;

        spinlock_t mgmt_tx_lock;
        spinlock_t beacon_lock;

        short beacon_txing;

        short wap_set;
        short ssid_set;

        u8  wpax_type_set;    //{added by David, 2006.9.28}
        u32 wpax_type_notify; //{added by David, 2006.9.26}

        /* QoS related flag */
        char init_wmmparam_flag;
        /* set on initialization */
        u8  qos_support;

        /* for discarding duplicated packets in IBSS */
        struct list_head ibss_mac_hash[IEEE_IBSS_MAC_HASH_SIZE];

        /* for discarding duplicated packets in BSS */
        u16 last_rxseq_num[17]; /* rx seq previous per-tid */
        u16 last_rxfrag_num[17];/* tx frag previous per-tid */
        unsigned long last_packet_time[17];

        /* for PS mode */
        unsigned long last_rx_ps_time;

        /* used if IEEE_SOFTMAC_SINGLE_QUEUE is set */
        struct sk_buff *mgmt_queue_ring[MGMT_QUEUE_NUM];
        int mgmt_queue_head;
        int mgmt_queue_tail;

/* rtl819x start */
        u8 AsocRetryCount;
        unsigned int hw_header;
        struct sk_buff_head skb_waitQ[MAX_QUEUE_SIZE];
        struct sk_buff_head skb_aggQ[MAX_QUEUE_SIZE];
        struct sk_buff_head skb_drv_aggQ[MAX_QUEUE_SIZE];
        u32 sta_edca_param[4];
        bool aggregation;
        /* Enable/Disable Rx immediate BA capability. */
        bool enable_rx_imm_BA;
        bool bibsscoordinator;

        /* Dynamic Tx power for near/far range enable/disable. */
        bool bdynamic_txpower_enable;

        bool bCTSToSelfEnable;
        u8 CTSToSelfTH;

        u32     fsync_time_interval;
        u32     fsync_rate_bitmap;
        u8      fsync_rssi_threshold;
        bool    bfsync_enable;

        u8      fsync_multiple_timeinterval;    /* value * FsyncTimeInterval */
        u32     fsync_firstdiff_ratethreshold;  /* low threshold */
        u32     fsync_seconddiff_ratethreshold; /* decrease threshold */
        Fsync_State     fsync_state;
        bool            bis_any_nonbepkts;
        /* 20Mhz 40Mhz AutoSwitch Threshold */
        struct bandwidth_autoswitch bandwidth_auto_switch;
        /* for txpower tracking */
        bool FwRWRF;

        /* for AP roaming */
        struct rt_link_detect LinkDetectInfo;

        struct rt_power_save_control PowerSaveControl;
/* rtl819x end */

        /* used if IEEE_SOFTMAC_TX_QUEUE is set */
        struct  tx_pending_t tx_pending;

        /* used if IEEE_SOFTMAC_ASSOCIATE is set */
        struct timer_list associate_timer;

        /* used if IEEE_SOFTMAC_BEACONS is set */
        struct timer_list beacon_timer;
        struct work_struct associate_complete_wq;
        struct work_struct associate_procedure_wq;
        struct delayed_work softmac_scan_wq;
        struct delayed_work associate_retry_wq;
        struct delayed_work start_ibss_wq;
        struct delayed_work hw_wakeup_wq;
        struct delayed_work hw_sleep_wq;
        struct delayed_work link_change_wq;
        struct work_struct wx_sync_scan_wq;
        struct workqueue_struct *wq;

        /* Callback functions */
        void (*set_security)(struct net_device *dev,
                             struct ieee80211_security *sec);

        /* Used to TX data frame by using txb structs.
         * this is not used if in the softmac_features
         * is set the flag IEEE_SOFTMAC_TX_QUEUE
         */
        int (*hard_start_xmit)(struct ieee80211_txb *txb,
                               struct net_device *dev);

        int (*reset_port)(struct net_device *dev);
        int (*is_queue_full)(struct net_device *dev, int pri);

        int (*handle_management)(struct net_device *dev,
                                 struct ieee80211_network *network, u16 type);
        int (*is_qos_active)(struct net_device *dev, struct sk_buff *skb);

        /* Softmac-generated frames (mamagement) are TXed via this
         * callback if the flag IEEE_SOFTMAC_SINGLE_QUEUE is
         * not set. As some cards may have different HW queues that
         * one might want to use for data and management frames
         * the option to have two callbacks might be useful.
         * This fucntion can't sleep.
         */
        int (*softmac_hard_start_xmit)(struct sk_buff *skb,
                               struct net_device *dev);

        /* used instead of hard_start_xmit (not softmac_hard_start_xmit)
         * if the IEEE_SOFTMAC_TX_QUEUE feature is used to TX data
         * frames. I the option IEEE_SOFTMAC_SINGLE_QUEUE is also set
         * then also management frames are sent via this callback.
         * This function can't sleep.
         */
        void (*softmac_data_hard_start_xmit)(struct sk_buff *skb,
                               struct net_device *dev,int rate);

        /* stops the HW queue for DATA frames. Useful to avoid
         * waste time to TX data frame when we are reassociating
         * This function can sleep.
         */
        void (*data_hard_stop)(struct net_device *dev);

        /* OK this is complementar to data_poll_hard_stop */
        void (*data_hard_resume)(struct net_device *dev);

        /* ask to the driver to retune the radio .
         * This function can sleep. the driver should ensure
         * the radio has been swithced before return.
         */
        void (*set_chan)(struct net_device *dev,short ch);

        /* These are not used if the ieee stack takes care of
         * scanning (IEEE_SOFTMAC_SCAN feature set).
         * In this case only the set_chan is used.
         *
         * The syncro version is similar to the start_scan but
         * does not return until all channels has been scanned.
         * this is called in user context and should sleep,
         * it is called in a work_queue when swithcing to ad-hoc mode
         * or in behalf of iwlist scan when the card is associated
         * and root user ask for a scan.
         * the fucntion stop_scan should stop both the syncro and
         * background scanning and can sleep.
         * The fucntion start_scan should initiate the background
         * scanning and can't sleep.
         */
        void (*scan_syncro)(struct net_device *dev);
        void (*start_scan)(struct net_device *dev);
        void (*stop_scan)(struct net_device *dev);

        /* indicate the driver that the link state is changed
         * for example it may indicate the card is associated now.
         * Driver might be interested in this to apply RX filter
         * rules or simply light the LINK led
         */
        void (*link_change)(struct net_device *dev);

        /* these two function indicates to the HW when to start
         * and stop to send beacons. This is used when the
         * IEEE_SOFTMAC_BEACONS is not set. For now the
         * stop_send_bacons is NOT guaranteed to be called only
         * after start_send_beacons.
         */
        void (*start_send_beacons) (struct net_device *dev);
        void (*stop_send_beacons) (struct net_device *dev);

        /* power save mode related */
        void (*sta_wake_up) (struct net_device *dev);
        void (*enter_sleep_state) (struct net_device *dev, u32 th, u32 tl);
        short (*ps_is_queue_empty) (struct net_device *dev);

        int (*handle_beacon)(struct net_device *dev,
                             struct ieee80211_probe_response *beacon,
                             struct ieee80211_network *network);
        int (*handle_assoc_response)(struct net_device *dev,
                                struct ieee80211_assoc_response_frame *resp,
                                struct ieee80211_network *network);

        /* check whether Tx hw resouce available */
        short (*check_nic_enough_desc)(struct net_device *dev, int queue_index);
        /* HT related */
        void (*SetBWModeHandler)(struct net_device *dev,
                                 HT_CHANNEL_WIDTH Bandwidth,
                                 HT_EXTCHNL_OFFSET Offset);
        bool (*GetNmodeSupportBySecCfg)(struct net_device* dev);
        void (*SetWirelessMode)(struct net_device* dev, u8 wireless_mode);
        bool (*GetHalfNmodeSupportByAPsHandler)(struct net_device* dev);
        bool (*is_ap_in_wep_tkip)(struct net_device* dev);
        void (*InitialGainHandler)(struct net_device *dev, u8 Operation);
        bool (*SetFwCmdHandler)(struct net_device *dev, FW_CMD_IO_TYPE FwCmdIO);
        void (*LedControlHandler)(struct net_device *dev,
                                  LED_CTL_MODE LedAction);
        /* This must be the last item so that it points to the data
         * allocated beyond this structure by alloc_ieee80211 */
        u8 priv[0];
};

#define IEEE_A            (1<<0)
#define IEEE_B            (1<<1)
#define IEEE_G            (1<<2)
#define IEEE_N_24G                (1<<4)
#define IEEE_N_5G                 (1<<5)
#define IEEE_MODE_MASK    (IEEE_A|IEEE_B|IEEE_G)

/* Generate a 802.11 header */

/* Uses the channel change callback directly
 * instead of [start/stop] scan callbacks
 */
#define IEEE_SOFTMAC_SCAN (1<<2)

/* Perform authentication and association handshake */
#define IEEE_SOFTMAC_ASSOCIATE (1<<3)

/* Generate probe requests */
#define IEEE_SOFTMAC_PROBERQ (1<<4)

/* Generate respones to probe requests */
#define IEEE_SOFTMAC_PROBERS (1<<5)

/* The ieee802.11 stack will manages the netif queue
 * wake/stop for the driver, taking care of 802.11
 * fragmentation. See softmac.c for details. */
#define IEEE_SOFTMAC_TX_QUEUE (1<<7)

/* Uses only the softmac_data_hard_start_xmit
 * even for TX management frames.
 */
#define IEEE_SOFTMAC_SINGLE_QUEUE (1<<8)

/* Generate beacons.  The stack will enqueue beacons
 * to the card
 */
#define IEEE_SOFTMAC_BEACONS (1<<6)

static inline void *ieee80211_priv(struct net_device *dev)
{
        return ((struct ieee80211_device *)netdev_priv(dev))->priv;
}

extern inline int ieee80211_is_empty_essid(const char *essid, int essid_len)
{
        /* Single white space is for Linksys APs */
        if (essid_len == 1 && essid[0] == ' ')
                return 1;

        /* Otherwise, if the entire essid is 0, we assume it is hidden */
        while (essid_len) {
                essid_len--;
                if (essid[essid_len] != '\0')
                        return 0;
        }

        return 1;
}

extern inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee, int mode)
{
        /*
         * It is possible for both access points and our device to support
         * combinations of modes, so as long as there is one valid combination
         * of ap/device supported modes, then return success
         *
         */
        if ((mode & IEEE_A) &&
            (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
            (ieee->freq_band & IEEE80211_52GHZ_BAND))
                return 1;

        if ((mode & IEEE_G) &&
            (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
            (ieee->freq_band & IEEE80211_24GHZ_BAND))
                return 1;

        if ((mode & IEEE_B) &&
            (ieee->modulation & IEEE80211_CCK_MODULATION) &&
            (ieee->freq_band & IEEE80211_24GHZ_BAND))
                return 1;

        return 0;
}

extern inline int ieee80211_get_hdrlen(u16 fc)
{
        int hdrlen = IEEE80211_3ADDR_LEN;

        switch (WLAN_FC_GET_TYPE(fc)) {
        case IEEE80211_FTYPE_DATA:
                if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
                        hdrlen = IEEE80211_4ADDR_LEN; /* Addr4 */
                if(IEEE80211_QOS_HAS_SEQ(fc))
                        hdrlen += 2; /* QOS ctrl*/
                break;
        case IEEE80211_FTYPE_CTL:
                switch (WLAN_FC_GET_STYPE(fc)) {
                case IEEE80211_STYPE_CTS:
                case IEEE80211_STYPE_ACK:
                        hdrlen = IEEE80211_1ADDR_LEN;
                        break;
                default:
                        hdrlen = IEEE80211_2ADDR_LEN;
                        break;
                }
                break;
        }

        return hdrlen;
}

static inline u8 *ieee80211_get_payload(struct rtl_ieee80211_hdr *hdr)
{
        switch (ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl))) {
        case IEEE80211_1ADDR_LEN:
                return ((struct ieee80211_hdr_1addr *)hdr)->payload;
        case IEEE80211_2ADDR_LEN:
                return ((struct ieee80211_hdr_2addr *)hdr)->payload;
        case IEEE80211_3ADDR_LEN:
                return (void *)hdr+sizeof(struct ieee80211_hdr_3addr);
        case IEEE80211_4ADDR_LEN:
                return ((struct ieee80211_hdr_4addr *)hdr)->payload;
        }
        return NULL;
}

static inline int ieee80211_is_ofdm_rate(u8 rate)
{
        switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
        case IEEE80211_OFDM_RATE_6MB:
        case IEEE80211_OFDM_RATE_9MB:
        case IEEE80211_OFDM_RATE_12MB:
        case IEEE80211_OFDM_RATE_18MB:
        case IEEE80211_OFDM_RATE_24MB:
        case IEEE80211_OFDM_RATE_36MB:
        case IEEE80211_OFDM_RATE_48MB:
        case IEEE80211_OFDM_RATE_54MB:
                return 1;
        }
        return 0;
}

static inline int ieee80211_is_cck_rate(u8 rate)
{
        switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
        case IEEE80211_CCK_RATE_1MB:
        case IEEE80211_CCK_RATE_2MB:
        case IEEE80211_CCK_RATE_5MB:
        case IEEE80211_CCK_RATE_11MB:
                return 1;
        }
        return 0;
}


/* ieee80211.c */
extern void free_ieee80211(struct net_device *dev);
extern struct net_device *alloc_ieee80211(int sizeof_priv);

extern int ieee80211_set_encryption(struct ieee80211_device *ieee);

/* ieee80211_tx.c */

extern int ieee80211_encrypt_fragment(
        struct ieee80211_device *ieee,
        struct sk_buff *frag,
        int hdr_len);

extern int rtl8192_ieee80211_rtl_xmit(struct sk_buff *skb,
                          struct net_device *dev);
extern void ieee80211_txb_free(struct ieee80211_txb *);


/* ieee80211_rx.c */
extern int ieee80211_rtl_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
                        struct ieee80211_rx_stats *rx_stats);
extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
                             struct ieee80211_hdr_4addr *header,
                             struct ieee80211_rx_stats *stats);

/* ieee80211_wx.c */
extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
                                 struct iw_request_info *info,
                                 union iwreq_data *wrqu, char *key);
extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
                                   struct iw_request_info *info,
                                   union iwreq_data *wrqu, char *key);
extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
                                   struct iw_request_info *info,
                                   union iwreq_data *wrqu, char *key);
extern int ieee80211_wx_set_encode_ext(struct ieee80211_device *ieee,
                            struct iw_request_info *info,
                            union iwreq_data* wrqu, char *extra);
extern int ieee80211_wx_set_auth(struct ieee80211_device *ieee,
                               struct iw_request_info *info,
                               struct iw_param *data, char *extra);
extern int ieee80211_wx_set_mlme(struct ieee80211_device *ieee,
                               struct iw_request_info *info,
                               union iwreq_data *wrqu, char *extra);
extern int ieee80211_wx_set_gen_ie(struct ieee80211_device *ieee, u8 *ie, size_t len);

/* ieee80211_softmac.c */
extern short ieee80211_is_54g(struct ieee80211_network net);
extern short ieee80211_is_shortslot(struct ieee80211_network net);
extern int ieee80211_rx_frame_softmac(struct ieee80211_device *ieee, struct sk_buff *skb,
                        struct ieee80211_rx_stats *rx_stats, u16 type,
                        u16 stype);
extern void ieee80211_softmac_new_net(struct ieee80211_device *ieee, struct ieee80211_network *net);

void SendDisassociation(struct ieee80211_device *ieee, u8* asSta, u8 asRsn);
extern void ieee80211_softmac_xmit(struct ieee80211_txb *txb, struct ieee80211_device *ieee);

extern void ieee80211_stop_send_beacons(struct ieee80211_device *ieee);
extern void notify_wx_assoc_event(struct ieee80211_device *ieee);
extern void ieee80211_softmac_check_all_nets(struct ieee80211_device *ieee);
extern void ieee80211_start_bss(struct ieee80211_device *ieee);
extern void ieee80211_start_master_bss(struct ieee80211_device *ieee);
extern void ieee80211_start_ibss(struct ieee80211_device *ieee);
extern void ieee80211_softmac_init(struct ieee80211_device *ieee);
extern void ieee80211_softmac_free(struct ieee80211_device *ieee);
extern void ieee80211_associate_abort(struct ieee80211_device *ieee);
extern void ieee80211_disassociate(struct ieee80211_device *ieee);
extern void ieee80211_stop_scan(struct ieee80211_device *ieee);
extern void ieee80211_start_scan_syncro(struct ieee80211_device *ieee);
extern void ieee80211_check_all_nets(struct ieee80211_device *ieee);
extern void ieee80211_start_protocol(struct ieee80211_device *ieee);
extern void ieee80211_stop_protocol(struct ieee80211_device *ieee);
extern void ieee80211_softmac_start_protocol(struct ieee80211_device *ieee);
extern void ieee80211_softmac_stop_protocol(struct ieee80211_device *ieee);
extern void ieee80211_reset_queue(struct ieee80211_device *ieee);
extern void ieee80211_rtl_wake_queue(struct ieee80211_device *ieee);
extern void ieee80211_rtl_stop_queue(struct ieee80211_device *ieee);
extern struct sk_buff *ieee80211_get_beacon(struct ieee80211_device *ieee);
extern void ieee80211_start_send_beacons(struct ieee80211_device *ieee);
extern void ieee80211_stop_send_beacons(struct ieee80211_device *ieee);
extern int ieee80211_wpa_supplicant_ioctl(struct ieee80211_device *ieee, struct iw_point *p);
extern void notify_wx_assoc_event(struct ieee80211_device *ieee);
extern void ieee80211_ps_tx_ack(struct ieee80211_device *ieee, short success);

extern void softmac_mgmt_xmit(struct sk_buff *skb, struct ieee80211_device *ieee);

/* ieee80211_crypt_ccmp&tkip&wep.c */
extern void ieee80211_tkip_null(void);
extern void ieee80211_wep_null(void);
extern void ieee80211_ccmp_null(void);

/* ieee80211_softmac_wx.c */

extern int ieee80211_wx_get_wap(struct ieee80211_device *ieee,
                            struct iw_request_info *info,
                            union iwreq_data *wrqu, char *ext);

extern int ieee80211_wx_set_wap(struct ieee80211_device *ieee,
                         struct iw_request_info *info,
                         union iwreq_data *awrq,
                         char *extra);

extern int ieee80211_wx_get_essid(struct ieee80211_device *ieee, struct iw_request_info *a,union iwreq_data *wrqu,char *b);

extern int ieee80211_wx_set_rate(struct ieee80211_device *ieee,
                             struct iw_request_info *info,
                             union iwreq_data *wrqu, char *extra);

extern int ieee80211_wx_get_rate(struct ieee80211_device *ieee,
                             struct iw_request_info *info,
                             union iwreq_data *wrqu, char *extra);

extern int ieee80211_wx_set_mode(struct ieee80211_device *ieee, struct iw_request_info *a,
                             union iwreq_data *wrqu, char *b);

extern int ieee80211_wx_set_scan(struct ieee80211_device *ieee, struct iw_request_info *a,
                             union iwreq_data *wrqu, char *b);

extern int ieee80211_wx_set_essid(struct ieee80211_device *ieee,
                              struct iw_request_info *a,
                              union iwreq_data *wrqu, char *extra);

extern int ieee80211_wx_get_mode(struct ieee80211_device *ieee, struct iw_request_info *a,
                             union iwreq_data *wrqu, char *b);

extern int ieee80211_wx_set_freq(struct ieee80211_device *ieee, struct iw_request_info *a,
                             union iwreq_data *wrqu, char *b);

extern int ieee80211_wx_get_freq(struct ieee80211_device *ieee, struct iw_request_info *a,
                             union iwreq_data *wrqu, char *b);

extern void ieee80211_wx_sync_scan_wq(struct work_struct *work);

extern int ieee80211_wx_set_rawtx(struct ieee80211_device *ieee,
                               struct iw_request_info *info,
                               union iwreq_data *wrqu, char *extra);

extern int ieee80211_wx_get_name(struct ieee80211_device *ieee,
                             struct iw_request_info *info,
                             union iwreq_data *wrqu, char *extra);

extern int ieee80211_wx_set_power(struct ieee80211_device *ieee,
                                 struct iw_request_info *info,
                                 union iwreq_data *wrqu, char *extra);

extern int ieee80211_wx_get_power(struct ieee80211_device *ieee,
                                 struct iw_request_info *info,
                                 union iwreq_data *wrqu, char *extra);

extern int ieee80211_wx_set_rts(struct ieee80211_device *ieee,
                             struct iw_request_info *info,
                             union iwreq_data *wrqu, char *extra);

extern int ieee80211_wx_get_rts(struct ieee80211_device *ieee,
                             struct iw_request_info *info,
                             union iwreq_data *wrqu, char *extra);

extern void ieee80211_softmac_scan_syncro(struct ieee80211_device *ieee);

extern const long ieee80211_wlan_frequencies[];

extern inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
{
        ieee->scans++;
}

extern inline int ieee80211_get_scans(struct ieee80211_device *ieee)
{
        return ieee->scans;
}

static inline const char *escape_essid(const char *essid, u8 essid_len) {
        static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
        const char *s = essid;
        char *d = escaped;

        if (ieee80211_is_empty_essid(essid, essid_len)) {
                memcpy(escaped, "<hidden>", sizeof("<hidden>"));
                return escaped;
        }

        essid_len = min(essid_len, (u8)IW_ESSID_MAX_SIZE);
        while (essid_len--) {
                if (*s == '\0') {
                        *d++ = '\\';
                        *d++ = '0';
                        s++;
                } else {
                        *d++ = *s++;
                }
        }
        *d = '\0';
        return escaped;
}

/* For the function is more related to hardware setting, it's better to use the
 * ieee handler to refer to it.
 */
extern short check_nic_enough_desc(struct net_device *dev, int queue_index);
extern int ieee80211_data_xmit(struct sk_buff *skb, struct net_device *dev);
extern int ieee80211_parse_info_param(struct ieee80211_device *ieee,
                struct ieee80211_info_element *info_element,
                u16 length,
                struct ieee80211_network *network,
                struct ieee80211_rx_stats *stats);

extern void ieee80211_indicate_packets(struct ieee80211_device *ieee,
                                       struct ieee80211_rxb **prxbIndicateArray,
                                       u8 index);
#define RT_ASOC_RETRY_LIMIT     5
#endif /* IEEE80211_H */