drivers/net/wireless/rtlink.org/mlme.h

   1 /*
   2  ***************************************************************************
   3  * Ralink Tech Inc.
   4  * 4F, No. 2 Technology 5th Rd.
   5  * Science-based Industrial Park
   6  * Hsin-chu, Taiwan, R.O.C.
   7  *
   8  * (c) Copyright 2002, Ralink Technology, Inc.
   9  *
  10  * All rights reserved. Ralink's source code is an unpublished work and the
  11  * use of a copyright notice does not imply otherwise. This source code
  12  * contains confidential trade secret material of Ralink Tech. Any attemp
  13  * or participation in deciphering, decoding, reverse engineering or in any
  14  * way altering the source code is stricitly prohibited, unless the prior
  15  * written consent of Ralink Technology, Inc. is obtained.
  16  ***************************************************************************
  17
  18     Module Name:
  19     mlme.h
  20
  21     Abstract:
  22
  23     Revision History:
  24     Who         When            What
  25     --------    ----------      ----------------------------------------------
  26     John        2003-08-28
  27 */
  28 #ifndef __MLME_H__
  29 #define __MLME_H__
  30
  31 #include "oid.h"
  32
  33 // maximum supported capability information -
  34 // ESS, IBSS, Privacy, Short Preamble, Short Slot
  35 #define SUPPORTED_CAPABILITY_INFO 0x0433
  36
  37 #define END_OF_ARGS             -1
  38 #define LFSR_MASK               0x80000057
  39 #define TBTT_PRELOAD_TIME       384        // usec. LomgPreamble + 24-byte at 1Mbps
  40 #define MLME_TASK_EXEC_INTV     1000      // 1 sec
  41
  42 #define BEACON_LOST_TIME        (4*HZ)       // 2048 msec = 2 sec
  43
  44 //#define AUTH_KEY_TIMEOUT        500     // unit: msec
  45 //#define AUTH_OPEN_TIMEOUT       200     // unit: msec
  46 #define AUTH_TIMEOUT            300     // unit: msec
  47 #define ASSOC_TIMEOUT           300     // unit: msec
  48 #define JOIN_TIMEOUT            2000     // unit: msec
  49 #define MIN_CHANNEL_TIME        110        // unit: msec, for dual band scan
  50 #define MAX_CHANNEL_TIME        140       // unit: msec, for single band scan
  51 #define ACTIVE_SCAN_TIME                30                      // Active scan waiting for probe response time
  52 #define CW_MIN_IN_BITS          3         // actual CwMin = 2^CW_MIN_IN_BITS - 1 = 7
  53 #define CW_MAX_IN_BITS          8         // actual CwMax = 2^CW_MAX_IN_BITS - 1 = 255
  54
  55 #define RSSI_TO_DBM_OFFSET          120 // for RT2530 RSSI-115 = dBm
  56 #define RSSI_FOR_MID_TX_POWER       55  // -55 db is considered mid-distance
  57 #define RSSI_FOR_LOW_TX_POWER       45  // -45 db is considered very short distance and
  58                                         // eligible to use a lower TX power
  59 #define RSSI_FOR_LOWEST_TX_POWER    30
  60 #define MID_TX_POWER_DELTA          0   // -3 db from full TX power upon mid-distance to AP
  61 #define LOW_TX_POWER_DELTA          3   // -8 db from full TX power upon very short distance
  62 #define LOWEST_TX_POWER_DELTA       6  // -12 db from full TX power upon shortest distance
  63
  64 #define RSSI_TRIGGERED_UPON_BELOW_THRESHOLD     0
  65 #define RSSI_TRIGGERED_UPON_EXCCEED_THRESHOLD   1
  66 #define RSSI_THRESHOLD_FOR_ROAMING              25
  67 #define RSSI_DELTA                              5
  68
  69 // Channel Quality Indication
  70 //#define CQI_GOOD_THRESHOLD      70  // >= this threshold means channel quality GOOD
  71 //#define CQI_FAIR_THRESHOLD      50  // >= this threshold means channel quality FAIR
  72 //#define CQI_POOR_THRESHOLD      30  // >= this threshold means channel quality POOR
  73                                     // < this threshold means channel quality really BAD, link down
  74 #define CQI_IS_GOOD(cqi)        ((cqi) >= 50)
  75 #define CQI_IS_FAIR(cqi)        (((cqi) >= 20) && ((cqi) < 50)) // (((cqi) >= 50) && ((cqi) < 70))
  76 #define CQI_IS_POOR(cqi)        (((cqi) >= 5) && ((cqi) < 20))  // (((cqi) >= 25) && ((cqi) < 50))
  77 #define CQI_IS_BAD(cqi)         ((cqi) < 5)                     // ((cqi) < 25)
  78
  79 // weighting factor to calculate Channel quality, total should be 100%
  80 #define RSSI_WEIGHTING          40
  81 #define TX_WEIGHTING            40
  82 #define RX_WEIGHTING            20
  83
  84 // prime number closest to 256
  85 //#define HASH_TABLE_SIZE                  191 //191 is another prime
  86 // Only allows 32 entries in the table
  87 #define MAC_TABLE_MAX_CAPACITY           32
  88
  89 #define MAC_ENTRY_NOT_USED               0xff
  90 #define CONTENT_NOT_AVAIL                0xaa
  91
  92 // 10 minute of age out
  93 #define MAC_TABLE_AGE_OUT_TIME           0xffffff
  94
  95 #define MAC_ADDR_HASH_ERROR              0xfffffffe
  96 #define MAC_TABLE_UNKNOWN_INDEX          0xff
  97 #define MAC_TABLE_ADDR_NOT_IN            0xfffffffd
  98
  99 #define PEER_KEY_NOT_USED                0
 100 #define PEER_KEY_64_BIT                  64
 101 #define PEER_KEY_128_BIT                 128
 102
 103 #define PEER_KEY_64BIT_LEN               8
 104 #define PEER_KEY_128BIT_LEN              16
 105
 106 #define MAX_LEN_OF_BSS_TABLE             64
 107 #define BSS_NOT_FOUND                    0xFFFFFFFF
 108
 109 #define MAX_LEN_OF_MLME_QUEUE            10
 110
 111 //! assoc state-machine states
 112 #define ASSOC_IDLE                       0
 113 #define ASSOC_WAIT_RSP                   1
 114 #define REASSOC_WAIT_RSP                 2
 115 #define DISASSOC_WAIT_RSP                3
 116 #define MAX_ASSOC_STATE                  4
 117
 118 #define ASSOC_FUNC_SIZE                  44 // 4-state * 12-event
 119
 120 //authentication state machine
 121 #define AUTH_REQ_IDLE                    0
 122 #define AUTH_WAIT_SEQ2                   1
 123 #define AUTH_WAIT_SEQ4                   2
 124 #define MAX_AUTH_STATE                   3
 125
 126 #define AUTH_FUNC_SIZE                   15 // 3-state * 5-event
 127
 128 #define AUTH_RSP_IDLE                    0
 129 #define AUTH_RSP_WAIT_CHAL               1
 130 #define MAX_AUTH_RSP_STATE               2
 131
 132 #define AUTH_RSP_FUNC_SIZE               6 // 2-state * 3-event
 133
 134 // SYNC state machine
 135 #define SYNC_IDLE                        0 // merge NO_BSS,IBSS_IDLE,IBSS_ACTIVE and BSS in to 1 state
 136 #define JOIN_WAIT_BEACON                 1
 137 #define SCAN_LISTEN                      2
 138 #define MAX_SYNC_STATE                   3
 139
 140 #define SYNC_FUNC_SIZE                   30  // 3-state * 10-event
 141
 142 #define SCAN_PASSIVE                     18
 143 #define SCAN_ACTIVE                      19
 144
 145 //WPA State machine
 146 #define WPA_PSK_IDLE                    0
 147 #define MAX_WPA_PSK_STATE               1
 148 #define WPA_PSK_FUNC_SIZE               5
 149
 150 // Control state machine
 151 #define CNTL_IDLE                        100
 152 #define CNTL_WAIT_DISASSOC               101
 153 #define CNTL_WAIT_JOIN                   102
 154 #define CNTL_WAIT_REASSOC                103
 155 #define CNTL_WAIT_START                  104
 156 #define CNTL_WAIT_AUTH                   105
 157 #define CNTL_WAIT_ASSOC                  106
 158 #define CNTL_WAIT_AUTH2                  107
 159 #define CNTL_WAIT_OID_LIST_SCAN          108
 160 #define CNTL_WAIT_OID_DISASSOC           109
 161
 162 //#define BSS_TABLE_EMPTY(x)               ((x).BssNr == 0)
 163 #define CapabilityInfoGen(Ess,Ibss,Cfp,CfpReq,Priv) ((Ess) ? 0x0001 : 0x0000) | ((Ibss) ? 0x0002 : 0x0000) | ((Cfp) ? 0x0004 : 0x0000) | ((CfpReq) ? 0x0008 : 0x0000) | ((Priv) ? 0x0010: 0x0000)
 164
 165 #define MAC_ADDR_IS_GROUP(Addr)       ((((Addr).Octet[0]) & 0x01) != 0)
 166 #define MAC_ADDR_HASH(Addr)           ((Addr).Octet[0] ^ (Addr).Octet[1] ^ (Addr).Octet[2] ^ (Addr).Octet[3] ^ (Addr).Octet[4] ^ (Addr).Octet[5])
 167 #define MAC_ADDR_HASH_INDEX(Addr)     (MAC_ADDR_HASH(Addr) % HASH_TABLE_SIZE)
 168 #define MAC_ADDR_EQUAL(pAddr1,pAddr2) RTMPEqualMemory((PVOID)(pAddr1), (PVOID)(pAddr2), MAC_ADDR_LEN)
 169 #define COPY_MAC_ADDR(Addr1, Addr2)   memcpy((Addr1), (Addr2), ETH_LENGTH_OF_ADDRESS)
 170 //#define MAKE_BROADCAST_ADDR(Addr)     NdisFillMemory(&Addr, MAC_ADDR_LEN, 0xff)
 171
 172 // LED Control
 173 // assoiation ON. one LED ON. another blinking when TX, OFF when idle
 174 #define ASIC_LED_ACT_ON(pAdapter)         RTMP_IO_WRITE32(pAdapter, LEDCSR, 0x0003461E)
 175 // no association, both LED off
 176 #define ASIC_LED_ACT_OFF(pAdapter)        RTMP_IO_WRITE32(pAdapter, LEDCSR, 0x0000461E)
 177 //#define ASIC_LED_LINK_UP(pAdapter)        RTMP_IO_WRITE32(pAdapter, LEDCSR, 0x00011E46)
 178 //#define ASIC_LED_LINK_DOWN(pAdapter)      RTMP_IO_WRITE32(pAdapter, LEDCSR, 0x00001E46)
 179
 180 #define CAP_IS_ESS_ON(x)                     (((x) & 0x0001) != 0)
 181 #define CAP_IS_IBSS_ON(x)                    (((x) & 0x0002) != 0)
 182 #define CAP_IS_CF_POLLABLE_ON(x)             (((x) & 0x0004) != 0)
 183 #define CAP_IS_CF_POLL_REQ_ON(x)             (((x) & 0x0008) != 0)
 184 #define CAP_IS_PRIVACY_ON(x)                 (((x) & 0x0010) != 0)
 185
 186 // 802.11G capability features
 187 #define CAP_IS_SHORT_PREAMBLE_ON(x)          (((x) & 0x0020) != 0)
 188 #define CAP_IS_PBCC_ON(x)                    (((x) & 0x0040) != 0)
 189 #define CAP_IS_AGILITY_ON(x)                 (((x) & 0x0080) != 0)
 190 #define CAP_IS_EXT_RATE_PBCC_ON(x)           (((x) & 0x0100) != 0)
 191 //#define CAP_IS_CCK_OFDM_ON(x)                (((x) & 0x0200) != 0)
 192 #define CAP_IS_QOS(x)                        (((x) & 0x0200) != 0)  // defined in 802.11e d4.3
 193 #define CAP_IS_SHORT_SLOT_TIME(x)            (((x) & 0x0400) != 0)
 194 #define CAP_IS_APSD(x)                       (((x) & 0x0800) != 0)  // defined in 802.11e d4.3
 195 #define CAP_IS_Q_ACK(x)                      (((x) & 0x1000) != 0)  // defined in 802.11e d4.3
 196 #define CAP_IS_DSSS_OFDM(x)                  (((x) & 0x2000) != 0)
 197 #define CAP_IS_BLOCK_ACK(x)                  (((x) & 0x4000) != 0)  // defined in 802.11e d4.3
 198
 199 #define CAP_GENERATE(ess,ibss,cfp,cfpreq,priv,prea) ((ess) ? 0x0001 : 0x0000) | ((ibss) ? 0x0002 : 0x0000) | ((cfp) ? 0x0004 : 0x0000) | ((cfpreq) ? 0x0008 : 0x0000) | ((priv) ? 0x0010 : 0x0000) | ((prea) ? 0x0020 : 0x0000)
 200
 201 #define ERP_IS_NON_ERP_PRESENT(x)            (((x) & 0x01) != 0)    // define in 802.11g
 202 #define ERP_IS_USE_PROTECTION(x)             (((x) & 0x02) != 0)    // define in 802.11g
 203 #define ERP_IS_USE_BARKER_PREAMBLE(x)        (((x) & 0x04) != 0)    // define in 802.11g
 204
 205 #define TX_FER_TOO_HIGH(TxFER)          ((TxFER) > 15)   // consider rate down if FER>15%
 206 #define TX_FER_VERY_LOW(TxFER)          ((TxFER) < 7)    // consider rate up if FER<7%
 207 #define FAIR_FER                        10               // any value between TOO_HIGH and VERY_LOW
 208 #define DRS_TX_QUALITY_WORST_BOUND      3
 209 #define DRS_PENALTY                     8
 210
 211 // Ralink timer control block
 212 typedef struct  _RALINK_TIMER_STRUCT    {
 213         struct timer_list       TimerObj;               // Ndis Timer object
 214         ULONG                           TimerValue;             // Timer value in milliseconds
 215         BOOLEAN                         State;                  // True if timer cancelled
 216         BOOLEAN                         Repeat;                 // True if periodic timer
 217 }       RALINK_TIMER_STRUCT, *PRALINK_TIMER_STRUCT;
 218
 219 // Mac Address data structure
 220 typedef struct  PACKED _MACADDR {
 221     UCHAR     Octet[MAC_ADDR_LEN];
 222 } MACADDR, *PMACADDR;
 223
 224 // Mac Frame Header
 225 typedef struct PACKED _MACHDR {
 226     // 2-byte Frame Control. NOTE: bit field assigned from LSB first
 227 #ifdef BIG_ENDIAN
 228     USHORT    Order:1;
 229     USHORT    Wep:1;
 230     USHORT    MoreData:1;
 231     USHORT    PwrMgmt:1;
 232     USHORT    Retry:1;
 233     USHORT    MoreFrag:1;
 234     USHORT    Frds:1;
 235     USHORT    Tods:1;
 236     USHORT    SubType:4;
 237     USHORT    Type:2;
 238     USHORT    Ver:2;
 239 #else
 240     USHORT    Ver:2;
 241     USHORT    Type:2;
 242     USHORT    SubType:4;
 243     USHORT    Tods:1;
 244     USHORT    Frds:1;
 245     USHORT    MoreFrag:1;
 246     USHORT    Retry:1;
 247     USHORT    PwrMgmt:1;
 248     USHORT    MoreData:1;
 249     USHORT    Wep:1;
 250     USHORT    Order:1;
 251 #endif
 252
 253     USHORT    Duration;
 254     MACADDR   Addr1;
 255     MACADDR   Addr2;
 256     MACADDR   Addr3;
 257
 258 #ifdef BIG_ENDIAN
 259     USHORT    Seq:12;
 260     USHORT    Frag:4;
 261 #else
 262     USHORT    Frag:4;
 263     USHORT    Seq:12;
 264 #endif
 265 } MACHDR, *PMACHDR;
 266
 267 typedef struct PACKED _MACFRAME {
 268     MACHDR    Hdr;
 269     CHAR      Octet[1];
 270 } MACFRAME, *PMACFRAME;
 271
 272 typedef struct PACKED _PSPOLL_FRAME {
 273     USHORT    Ver:2;
 274     USHORT    Type:2;
 275     USHORT    SubType:4;
 276     USHORT    Tods:1;
 277     USHORT    Frds:1;
 278     USHORT    MoreFrag:1;
 279     USHORT    Retry:1;
 280     USHORT    PwrMgmt:1;
 281     USHORT    MoreData:1;
 282     USHORT    Wep:1;
 283     USHORT    Order:1;
 284
 285     USHORT    Aid;
 286     MACADDR   Bssid;
 287     MACADDR   Ta;
 288 } PSPOLL_FRAME;
 289
 290 //
 291 // Contention-free parameter (without ID and Length)
 292 //
 293 typedef struct PACKED _CF_PARM {
 294     UCHAR        CfpCount;
 295     UCHAR        CfpPeriod;
 296     USHORT       CfpMaxDuration;
 297     USHORT       CfpDurRemaining;
 298 } CF_PARM, *PCF_PARM;
 299
 300
 301 typedef struct PACKED _BSS_ENTRY{
 302     MACADDR Bssid;
 303     UCHAR   Channel;
 304     UCHAR   BssType;
 305     USHORT  AtimWin;
 306     USHORT  BeaconPeriod;
 307
 308     UCHAR   Rates[MAX_LEN_OF_SUPPORTED_RATES];
 309     UCHAR   RatesLen;
 310     BOOLEAN ExtendedRateIeExist; // records if this AP use EXTENDED_SUPPORTED_RATES IE
 311     UCHAR   Rssi;
 312     UCHAR   Privacy;            // Indicate security function ON/OFF. Don't mess up with auth mode.
 313     UCHAR   Hidden;
 314     UCHAR   Reserved1[3];   // Scott added @2005-01-13 for alignment
 315     USHORT  DtimPeriod;
 316     USHORT  CapabilityInfo;
 317
 318     USHORT  CfpCount;
 319     USHORT  CfpPeriod;
 320     USHORT  CfpMaxDuration;
 321     USHORT  CfpDurRemaining;
 322     UCHAR   SsidLen;
 323     CHAR    Ssid[MAX_LEN_OF_SSID];
 324     UCHAR   Reserved2[3];   // Scott added @2005-01-13 for alignment
 325     ULONG   LastBeaconRxTime; // OS's timestamp
 326
 327     // New for microsoft WPA support
 328     NDIS_802_11_FIXED_IEs   FixIEs;
 329     NDIS_802_11_WEP_STATUS  WepStatus;
 330     UCHAR                   VarIELen;               // Length of next VIE include EID & Length
 331     UCHAR           Reserved3[3];       // Scott added @2005-01-13 for alignment
 332     UCHAR                   VarIEs[MAX_VIE_LEN];
 333 } BSS_ENTRY, *PBSS_ENTRY;
 334
 335 typedef struct {
 336     UCHAR           BssNr;
 337     UCHAR       Reserved[3];    // Scott added @2005-01-13 for alignment
 338     BSS_ENTRY       BssEntry[MAX_LEN_OF_BSS_TABLE];
 339 } BSS_TABLE, *PBSS_TABLE;
 340
 341 typedef struct PACKED _MLME_QUEUE_ELEM {
 342     ULONG             Machine;
 343     ULONG             MsgType;
 344     ULONG             MsgLen;
 345     LARGE_INTEGER TimeStamp;
 346     UCHAR             Msg[MAX_LEN_OF_MLME_BUFFER];
 347     UCHAR             Rssi;
 348     UCHAR             Channel;
 349     BOOLEAN           Occupied;
 350     UCHAR         Reserved;     // Scott added @2005-01-13 for alignment
 351 } MLME_QUEUE_ELEM, *PMLME_QUEUE_ELEM;
 352
 353 typedef struct PACKED _MLME_QUEUE {
 354     ULONG             Num;
 355     ULONG             Head;
 356     ULONG             Tail;
 357     spinlock_t   Lock;
 358     MLME_QUEUE_ELEM  Entry[MAX_LEN_OF_MLME_QUEUE];
 359 } MLME_QUEUE, *PMLME_QUEUE;
 360
 361 typedef VOID (*STATE_MACHINE_FUNC)(VOID *Adaptor, MLME_QUEUE_ELEM *Elem);
 362
 363 typedef struct PACKED _STATE_MACHINE {
 364     ULONG                           Base;
 365     ULONG                           NrState;
 366     ULONG                           NrMsg;
 367     ULONG                           CurrState;
 368     STATE_MACHINE_FUNC             *TransFunc;
 369 } STATE_MACHINE, *PSTATE_MACHINE;
 370
 371 // CNTL State Machine Aux data structure
 372 typedef struct _CNTL_AUX {
 373     UCHAR               Ssid[MAX_LEN_OF_SSID];
 374     UCHAR               SsidLen;
 375     MACADDR             Bssid;
 376     BSS_TABLE           SsidBssTab;     // AP list for the same SSID
 377     BSS_TABLE           RoamTab;        // AP list eligible for roaming
 378     ULONG               BssIdx;
 379     ULONG               RoamIdx;
 380     BOOLEAN             CurrReqIsFromNdis; // TRUE - then we should call NdisMSetInformationComplete()
 381                                            // FALSE - req is from driver itself.
 382                                            // no NdisMSetInformationComplete() is required
 383 } CNTL_AUX, *PCNTL_AUX;
 384
 385 // ASSOC State Machine Aux data structure
 386 typedef struct _ASSOC_AUX {
 387     MACADDR             Addr;
 388     USHORT              CapabilityInfo;
 389     USHORT              ListenIntv;
 390     CHAR                Ssid[MAX_LEN_OF_SSID];
 391     UCHAR               SsidLen;
 392     RALINK_TIMER_STRUCT AssocTimer, ReassocTimer, DisassocTimer;
 393 } ASSOC_AUX, *PASSOC_AUX;
 394
 395 // AUTH State Machine Aux data structure
 396 typedef struct _AUTH_AUX {
 397     MACADDR             Addr;
 398     USHORT              Alg;
 399     RALINK_TIMER_STRUCT AuthTimer;
 400 } AUTH_AUX, *PAUTH_AUX;
 401
 402 // AUTH-RSP State Machine Aux data structure
 403 typedef struct PACKED _AUTH_RSP_AUX {
 404     MACADDR             Addr;
 405     USHORT              Alg;
 406     CHAR                Challenge[CIPHER_TEXT_LEN];
 407     RALINK_TIMER_STRUCT AuthRspTimer;
 408 } AUTH_RSP_AUX, *PAUTH_RSP_AUX;
 409
 410 // SYNC State Machine Aux data structure
 411 typedef struct _SYNC_AUX {
 412     MACADDR             Addr;
 413     MACADDR             Bssid;
 414     UCHAR               BssType;
 415     UCHAR               SsidLen;
 416     CHAR                Ssid[MAX_LEN_OF_SSID];
 417     UCHAR               ScanType;
 418     UCHAR               Channel;
 419     RALINK_TIMER_STRUCT BeaconTimer, ScanTimer;
 420 } SYNC_AUX;
 421
 422  // assoc struct is equal to reassoc
 423 typedef struct PACKED _MLME_ASSOC_REQ_STRUCT{
 424     MACADDR   Addr;
 425     USHORT    CapabilityInfo;
 426     USHORT    ListenIntv;
 427     ULONG     Timeout;
 428 } MLME_ASSOC_REQ_STRUCT, *PMLME_ASSOC_REQ_STRUCT, MLME_REASSOC_REQ_STRUCT, *PMLME_REASSOC_REQ_STRUCT;
 429
 430 typedef struct PACKED _MLME_DISASSOC_REQ_STRUCT{
 431     MACADDR   Addr;
 432     USHORT    Reason;
 433 } MLME_DISASSOC_REQ_STRUCT, *PMLME_DISASSOC_REQ_STRUCT;
 434
 435 typedef struct PACKED _MLME_AUTH_REQ_STRUCT {
 436     MACADDR      Addr;
 437     USHORT       Alg;
 438     ULONG        Timeout;
 439 } MLME_AUTH_REQ_STRUCT, *PMLME_AUTH_REQ_STRUCT;
 440
 441 typedef struct PACKED _MLME_DEAUTH_REQ_STRUCT {
 442     MACADDR      Addr;
 443     USHORT       Reason;
 444 } MLME_DEAUTH_REQ_STRUCT, *PMLME_DEAUTH_REQ_STRUCT;
 445
 446 //typedef struct _MLME_AUTH_IND_STRUCT {
 447 //    MACADDR      Addr;
 448 //    USHORT       Alg;
 449 //} MLME_AUTH_IND_STRUCT, *PMLME_AUTH_IND_STRUCT;
 450
 451 //typedef struct _CLS2ERR_STRUCT {
 452 //    MACADDR      Addr;
 453 //} CLS2ERR_STRUCT, *PCLS2ERR_STRUCT;
 454
 455 typedef struct PACKED _MLME_JOIN_REQ_STRUCT{
 456     ULONG      BssIdx;
 457 } MLME_JOIN_REQ_STRUCT;
 458
 459 typedef struct PACKED _MLME_SCAN_REQ_STRUCT {
 460     MACADDR    Bssid;
 461     UCHAR      BssType;
 462     UCHAR      ScanType;
 463     UCHAR      SsidLen;
 464     CHAR       Ssid[MAX_LEN_OF_SSID];
 465 } MLME_SCAN_REQ_STRUCT, *PMLME_SCAN_REQ_STRUCT;
 466
 467 typedef struct PACKED _MLME_START_REQ_STRUCT {
 468     CHAR        Ssid[MAX_LEN_OF_SSID];
 469     UCHAR       SsidLen;
 470 } MLME_START_REQ_STRUCT, *PMLME_START_REQ_STRUCT;
 471
 472 typedef struct PACKED _ARC4_CONTEXT {
 473     UCHAR x, y, State[256], Key[16];     // 128 bits key
 474 } ARC4_CONTEXT, *PARC4_CONTEXT;
 475
 476 typedef struct PACKED _BEACON_EID_STRUCT {
 477     UCHAR   Eid;
 478     UCHAR   Len;
 479     CHAR   Octet[1];
 480 } BEACON_EID_STRUCT,*PBEACON_EID_STRUCT;
 481
 482 // New for WPA cipher suite
 483 typedef struct  PACKED _RSN_EID_STRUCT  {
 484     UCHAR   Eid;
 485     UCHAR   Length;
 486     UCHAR   Oui[4];
 487     USHORT  Version;
 488     UCHAR   Multicast[4];
 489     USHORT  Count;
 490     struct  {
 491         UCHAR   Oui[4];
 492     }   Unicast[1];
 493 }   RSN_EID_STRUCT, *PRSN_EID_STRUCT;
 494
 495 extern UCHAR  RateIdToMbps[];
 496 extern USHORT RateIdTo500Kbps[];
 497
 498 #endif  // MLME_H__