linux/drivers/staging/rtl8192u/ieee80211/rtl819x_HTProc.c
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   1// SPDX-License-Identifier: GPL-2.0
   2
   3//As this function is mainly ported from Windows driver, so leave the name little changed. If any confusion caused, tell me. Created by WB. 2008.05.08
   4#include "ieee80211.h"
   5#include "rtl819x_HT.h"
   6u8 MCS_FILTER_ALL[16] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
   7
   8u8 MCS_FILTER_1SS[16] = {0xff, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
   9
  10u16 MCS_DATA_RATE[2][2][77] =
  11        {       {       {13, 26, 39, 52, 78, 104, 117, 130, 26, 52, 78 ,104, 156, 208, 234, 260,
  12                        39, 78, 117, 234, 312, 351, 390, 52, 104, 156, 208, 312, 416, 468, 520,
  13                        0, 78, 104, 130, 117, 156, 195, 104, 130, 130, 156, 182, 182, 208, 156, 195,
  14                        195, 234, 273, 273, 312, 130, 156, 181, 156, 181, 208, 234, 208, 234, 260, 260,
  15                        286, 195, 234, 273, 234, 273, 312, 351, 312, 351, 390, 390, 429},                       // Long GI, 20MHz
  16                        {14, 29, 43, 58, 87, 116, 130, 144, 29, 58, 87, 116, 173, 231, 260, 289,
  17                        43, 87, 130, 173, 260, 347, 390, 433, 58, 116, 173, 231, 347, 462, 520, 578,
  18                        0, 87, 116, 144, 130, 173, 217, 116, 144, 144, 173, 202, 202, 231, 173, 217,
  19                        217, 260, 303, 303, 347, 144, 173, 202, 173, 202, 231, 260, 231, 260, 289, 289,
  20                        318, 217, 260, 303, 260, 303, 347, 390, 347, 390, 433, 433, 477}        },              // Short GI, 20MHz
  21                {       {27, 54, 81, 108, 162, 216, 243, 270, 54, 108, 162, 216, 324, 432, 486, 540,
  22                        81, 162, 243, 324, 486, 648, 729, 810, 108, 216, 324, 432, 648, 864, 972, 1080,
  23                        12, 162, 216, 270, 243, 324, 405, 216, 270, 270, 324, 378, 378, 432, 324, 405,
  24                        405, 486, 567, 567, 648, 270, 324, 378, 324, 378, 432, 486, 432, 486, 540, 540,
  25                        594, 405, 486, 567, 486, 567, 648, 729, 648, 729, 810, 810, 891},       // Long GI, 40MHz
  26                        {30, 60, 90, 120, 180, 240, 270, 300, 60, 120, 180, 240, 360, 480, 540, 600,
  27                        90, 180, 270, 360, 540, 720, 810, 900, 120, 240, 360, 480, 720, 960, 1080, 1200,
  28                        13, 180, 240, 300, 270, 360, 450, 240, 300, 300, 360, 420, 420, 480, 360, 450,
  29                        450, 540, 630, 630, 720, 300, 360, 420, 360, 420, 480, 540, 480, 540, 600, 600,
  30                        660, 450, 540, 630, 540, 630, 720, 810, 720, 810, 900, 900, 990}        }       // Short GI, 40MHz
  31        };
  32
  33static u8 UNKNOWN_BORADCOM[3] = {0x00, 0x14, 0xbf};
  34static u8 LINKSYSWRT330_LINKSYSWRT300_BROADCOM[3] = {0x00, 0x1a, 0x70};
  35static u8 LINKSYSWRT350_LINKSYSWRT150_BROADCOM[3] = {0x00, 0x1d, 0x7e};
  36static u8 NETGEAR834Bv2_BROADCOM[3] = {0x00, 0x1b, 0x2f};
  37static u8 BELKINF5D8233V1_RALINK[3] = {0x00, 0x17, 0x3f};       //cosa 03202008
  38static u8 BELKINF5D82334V3_RALINK[3] = {0x00, 0x1c, 0xdf};
  39static u8 PCI_RALINK[3] = {0x00, 0x90, 0xcc};
  40static u8 EDIMAX_RALINK[3] = {0x00, 0x0e, 0x2e};
  41static u8 AIRLINK_RALINK[3] = {0x00, 0x18, 0x02};
  42//static u8 DLINK_ATHEROS[3] = {0x00, 0x1c, 0xf0};
  43static u8 CISCO_BROADCOM[3] = {0x00, 0x17, 0x94};
  44
  45// 2008/04/01 MH For Cisco G mode RX TP We need to change FW duration. Should we put the
  46// code in other place??
  47//static u8 WIFI_CISCO_G_AP[3] = {0x00, 0x40, 0x96};
  48/********************************************************************************************************************
  49 *function:  This function update default settings in pHTInfo structure
  50 *   input:  PRT_HIGH_THROUGHPUT        pHTInfo
  51 *  output:  none
  52 *  return:  none
  53 *  notice:  These value need be modified if any changes.
  54 * *****************************************************************************************************************/
  55void HTUpdateDefaultSetting(struct ieee80211_device *ieee)
  56{
  57        PRT_HIGH_THROUGHPUT     pHTInfo = ieee->pHTInfo;
  58        //const typeof( ((struct ieee80211_device *)0)->pHTInfo ) *__mptr = &pHTInfo;
  59
  60        //printk("pHTinfo:%p, &pHTinfo:%p, mptr:%p,  offsetof:%x\n", pHTInfo, &pHTInfo, __mptr, offsetof(struct ieee80211_device, pHTInfo));
  61        //printk("===>ieee:%p,\n", ieee);
  62        // ShortGI support
  63        pHTInfo->bRegShortGI20MHz= 1;
  64        pHTInfo->bRegShortGI40MHz= 1;
  65
  66        // 40MHz channel support
  67        pHTInfo->bRegBW40MHz = 1;
  68
  69        // CCK rate support in 40MHz channel
  70        if(pHTInfo->bRegBW40MHz)
  71                pHTInfo->bRegSuppCCK = 1;
  72        else
  73                pHTInfo->bRegSuppCCK = true;
  74
  75        // AMSDU related
  76        pHTInfo->nAMSDU_MaxSize = 7935UL;
  77        pHTInfo->bAMSDU_Support = 0;
  78
  79        // AMPDU related
  80        pHTInfo->bAMPDUEnable = 1;
  81        pHTInfo->AMPDU_Factor = 2; //// 0: 2n13(8K), 1:2n14(16K), 2:2n15(32K), 3:2n16(64k)
  82        pHTInfo->MPDU_Density = 0;// 0: No restriction, 1: 1/8usec, 2: 1/4usec, 3: 1/2usec, 4: 1usec, 5: 2usec, 6: 4usec, 7:8usec
  83
  84        // MIMO Power Save
  85        pHTInfo->SelfMimoPs = 3;// 0: Static Mimo Ps, 1: Dynamic Mimo Ps, 3: No Limitation, 2: Reserved(Set to 3 automatically.)
  86        if(pHTInfo->SelfMimoPs == 2)
  87                pHTInfo->SelfMimoPs = 3;
  88        // 8190 only. Assign rate operation mode to firmware
  89        ieee->bTxDisableRateFallBack = 0;
  90        ieee->bTxUseDriverAssingedRate = 0;
  91
  92#ifdef  TO_DO_LIST
  93        // 8190 only. Assign duration operation mode to firmware
  94        pMgntInfo->bTxEnableFwCalcDur = (BOOLEAN)pNdisCommon->bRegTxEnableFwCalcDur;
  95#endif
  96        // 8190 only, Realtek proprietary aggregation mode
  97        // Set MPDUDensity=2,   1: Set MPDUDensity=2(32k)  for Realtek AP and set MPDUDensity=0(8k) for others
  98        pHTInfo->bRegRT2RTAggregation = 1;//0: Set MPDUDensity=2,   1: Set MPDUDensity=2(32k)  for Realtek AP and set MPDUDensity=0(8k) for others
  99
 100        // For Rx Reorder Control
 101        pHTInfo->bRegRxReorderEnable = 1;
 102        pHTInfo->RxReorderWinSize = 64;
 103        pHTInfo->RxReorderPendingTime = 30;
 104
 105#ifdef USB_TX_DRIVER_AGGREGATION_ENABLE
 106        pHTInfo->UsbTxAggrNum = 4;
 107#endif
 108#ifdef USB_RX_AGGREGATION_SUPPORT
 109        pHTInfo->UsbRxFwAggrEn = 1;
 110        pHTInfo->UsbRxFwAggrPageNum = 24;
 111        pHTInfo->UsbRxFwAggrPacketNum = 8;
 112        pHTInfo->UsbRxFwAggrTimeout = 16; ////usb rx FW aggregation timeout threshold.It's in units of 64us
 113#endif
 114
 115
 116}
 117/********************************************************************************************************************
 118 *function:  This function print out each field on HT capability IE mainly from (Beacon/ProbeRsp/AssocReq)
 119 *   input:  u8*        CapIE       //Capability IE to be printed out
 120 *           u8*        TitleString //mainly print out caller function
 121 *  output:  none
 122 *  return:  none
 123 *  notice:  Driver should not print out this message by default.
 124 * *****************************************************************************************************************/
 125void HTDebugHTCapability(u8 *CapIE, u8 *TitleString )
 126{
 127
 128        static u8       EWC11NHTCap[] = {0x00, 0x90, 0x4c, 0x33};       // For 11n EWC definition, 2007.07.17, by Emily
 129        PHT_CAPABILITY_ELE              pCapELE;
 130
 131        if(!memcmp(CapIE, EWC11NHTCap, sizeof(EWC11NHTCap)))
 132        {
 133                //EWC IE
 134                IEEE80211_DEBUG(IEEE80211_DL_HT, "EWC IE in %s()\n", __func__);
 135                pCapELE = (PHT_CAPABILITY_ELE)(&CapIE[4]);
 136        }else
 137                pCapELE = (PHT_CAPABILITY_ELE)(&CapIE[0]);
 138
 139        IEEE80211_DEBUG(IEEE80211_DL_HT, "<Log HT Capability>. Called by %s\n", TitleString );
 140
 141        IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tSupported Channel Width = %s\n", (pCapELE->ChlWidth)?"20MHz": "20/40MHz");
 142        IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tSupport Short GI for 20M = %s\n", (pCapELE->ShortGI20Mhz)?"YES": "NO");
 143        IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tSupport Short GI for 40M = %s\n", (pCapELE->ShortGI40Mhz)?"YES": "NO");
 144        IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tSupport TX STBC = %s\n", (pCapELE->TxSTBC)?"YES": "NO");
 145        IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tMax AMSDU Size = %s\n", (pCapELE->MaxAMSDUSize)?"3839": "7935");
 146        IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tSupport CCK in 20/40 mode = %s\n", (pCapELE->DssCCk)?"YES": "NO");
 147        IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tMax AMPDU Factor = %d\n", pCapELE->MaxRxAMPDUFactor);
 148        IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tMPDU Density = %d\n", pCapELE->MPDUDensity);
 149        IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tMCS Rate Set = [%x][%x][%x][%x][%x]\n", pCapELE->MCS[0],\
 150                                pCapELE->MCS[1], pCapELE->MCS[2], pCapELE->MCS[3], pCapELE->MCS[4]);
 151        return;
 152
 153}
 154/********************************************************************************************************************
 155 *function:  This function print out each field on HT Information IE mainly from (Beacon/ProbeRsp)
 156 *   input:  u8*        InfoIE       //Capability IE to be printed out
 157 *           u8*        TitleString //mainly print out caller function
 158 *  output:  none
 159 *  return:  none
 160 *  notice:  Driver should not print out this message by default.
 161 * *****************************************************************************************************************/
 162void HTDebugHTInfo(u8 *InfoIE, u8 *TitleString)
 163{
 164
 165        static u8       EWC11NHTInfo[] = {0x00, 0x90, 0x4c, 0x34};      // For 11n EWC definition, 2007.07.17, by Emily
 166        PHT_INFORMATION_ELE             pHTInfoEle;
 167
 168        if(!memcmp(InfoIE, EWC11NHTInfo, sizeof(EWC11NHTInfo)))
 169        {
 170                // Not EWC IE
 171                IEEE80211_DEBUG(IEEE80211_DL_HT, "EWC IE in %s()\n", __func__);
 172                pHTInfoEle = (PHT_INFORMATION_ELE)(&InfoIE[4]);
 173        }else
 174                pHTInfoEle = (PHT_INFORMATION_ELE)(&InfoIE[0]);
 175
 176
 177        IEEE80211_DEBUG(IEEE80211_DL_HT, "<Log HT Information Element>. Called by %s\n", TitleString);
 178
 179        IEEE80211_DEBUG(IEEE80211_DL_HT, "\tPrimary channel = %d\n", pHTInfoEle->ControlChl);
 180        IEEE80211_DEBUG(IEEE80211_DL_HT, "\tSecondary channel =");
 181        switch (pHTInfoEle->ExtChlOffset)
 182        {
 183                case 0:
 184                        IEEE80211_DEBUG(IEEE80211_DL_HT, "Not Present\n");
 185                        break;
 186                case 1:
 187                        IEEE80211_DEBUG(IEEE80211_DL_HT, "Upper channel\n");
 188                        break;
 189                case 2:
 190                        IEEE80211_DEBUG(IEEE80211_DL_HT, "Reserved. Eooro!!!\n");
 191                        break;
 192                case 3:
 193                        IEEE80211_DEBUG(IEEE80211_DL_HT, "Lower Channel\n");
 194                        break;
 195        }
 196        IEEE80211_DEBUG(IEEE80211_DL_HT, "\tRecommended channel width = %s\n", (pHTInfoEle->RecommemdedTxWidth)?"20Mhz": "40Mhz");
 197
 198        IEEE80211_DEBUG(IEEE80211_DL_HT, "\tOperation mode for protection = ");
 199        switch (pHTInfoEle->OptMode)
 200        {
 201                case 0:
 202                        IEEE80211_DEBUG(IEEE80211_DL_HT, "No Protection\n");
 203                        break;
 204                case 1:
 205                        IEEE80211_DEBUG(IEEE80211_DL_HT, "HT non-member protection mode\n");
 206                        break;
 207                case 2:
 208                        IEEE80211_DEBUG(IEEE80211_DL_HT, "Suggest to open protection\n");
 209                        break;
 210                case 3:
 211                        IEEE80211_DEBUG(IEEE80211_DL_HT, "HT mixed mode\n");
 212                        break;
 213        }
 214
 215        IEEE80211_DEBUG(IEEE80211_DL_HT, "\tBasic MCS Rate Set = [%x][%x][%x][%x][%x]\n", pHTInfoEle->BasicMSC[0],\
 216                                pHTInfoEle->BasicMSC[1], pHTInfoEle->BasicMSC[2], pHTInfoEle->BasicMSC[3], pHTInfoEle->BasicMSC[4]);
 217        return;
 218}
 219
 220/*
 221*       Return:         true if station in half n mode and AP supports 40 bw
 222*/
 223static bool IsHTHalfNmode40Bandwidth(struct ieee80211_device *ieee)
 224{
 225        bool                    retValue = false;
 226        PRT_HIGH_THROUGHPUT      pHTInfo = ieee->pHTInfo;
 227
 228        if(!pHTInfo->bCurrentHTSupport)         // wireless is n mode
 229                retValue = false;
 230        else if(!pHTInfo->bRegBW40MHz)          // station supports 40 bw
 231                retValue = false;
 232        else if(!ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev))      // station in half n mode
 233                retValue = false;
 234        else if(((PHT_CAPABILITY_ELE)(pHTInfo->PeerHTCapBuf))->ChlWidth) // ap support 40 bw
 235                retValue = true;
 236        else
 237                retValue = false;
 238
 239        return retValue;
 240}
 241
 242static bool IsHTHalfNmodeSGI(struct ieee80211_device *ieee, bool is40MHz)
 243{
 244        bool                    retValue = false;
 245        PRT_HIGH_THROUGHPUT      pHTInfo = ieee->pHTInfo;
 246
 247        if(!pHTInfo->bCurrentHTSupport)         // wireless is n mode
 248                retValue = false;
 249        else if(!ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev))      // station in half n mode
 250                retValue = false;
 251        else if(is40MHz) // ap support 40 bw
 252        {
 253                if(((PHT_CAPABILITY_ELE)(pHTInfo->PeerHTCapBuf))->ShortGI40Mhz) // ap support 40 bw short GI
 254                        retValue = true;
 255                else
 256                        retValue = false;
 257        }
 258        else
 259        {
 260                if(((PHT_CAPABILITY_ELE)(pHTInfo->PeerHTCapBuf))->ShortGI20Mhz) // ap support 40 bw short GI
 261                        retValue = true;
 262                else
 263                        retValue = false;
 264        }
 265
 266        return retValue;
 267}
 268
 269u16 HTHalfMcsToDataRate(struct ieee80211_device *ieee,  u8      nMcsRate)
 270{
 271
 272        u8      is40MHz;
 273        u8      isShortGI;
 274
 275        is40MHz  =  (IsHTHalfNmode40Bandwidth(ieee))?1:0;
 276        isShortGI = (IsHTHalfNmodeSGI(ieee, is40MHz))? 1:0;
 277
 278        return MCS_DATA_RATE[is40MHz][isShortGI][(nMcsRate&0x7f)];
 279}
 280
 281
 282u16 HTMcsToDataRate(struct ieee80211_device *ieee, u8 nMcsRate)
 283{
 284        PRT_HIGH_THROUGHPUT     pHTInfo = ieee->pHTInfo;
 285
 286        u8      is40MHz = (pHTInfo->bCurBW40MHz)?1:0;
 287        u8      isShortGI = (pHTInfo->bCurBW40MHz)?
 288                                                ((pHTInfo->bCurShortGI40MHz)?1:0):
 289                                                ((pHTInfo->bCurShortGI20MHz)?1:0);
 290        return MCS_DATA_RATE[is40MHz][isShortGI][(nMcsRate&0x7f)];
 291}
 292
 293/********************************************************************************************************************
 294 *function:  This function returns current datarate.
 295 *   input:  struct ieee80211_device*   ieee
 296 *           u8                         nDataRate
 297 *  output:  none
 298 *  return:  tx rate
 299 *  notice:  quite unsure about how to use this function //wb
 300 * *****************************************************************************************************************/
 301u16  TxCountToDataRate(struct ieee80211_device *ieee, u8 nDataRate)
 302{
 303        //PRT_HIGH_THROUGHPUT   pHTInfo = ieee->pHTInfo;
 304        u16             CCKOFDMRate[12] = {0x02 , 0x04 , 0x0b , 0x16 , 0x0c , 0x12 , 0x18 , 0x24 , 0x30 , 0x48 , 0x60 , 0x6c};
 305        u8      is40MHz = 0;
 306        u8      isShortGI = 0;
 307
 308        if(nDataRate < 12)
 309        {
 310                return CCKOFDMRate[nDataRate];
 311        }
 312        else
 313        {
 314                if (nDataRate >= 0x10 && nDataRate <= 0x1f)//if(nDataRate > 11 && nDataRate < 28 )
 315                {
 316                        is40MHz = 0;
 317                        isShortGI = 0;
 318
 319                      // nDataRate = nDataRate - 12;
 320                }
 321                else if(nDataRate >=0x20  && nDataRate <= 0x2f ) //(27, 44)
 322                {
 323                        is40MHz = 1;
 324                        isShortGI = 0;
 325
 326                        //nDataRate = nDataRate - 28;
 327                }
 328                else if(nDataRate >= 0x30  && nDataRate <= 0x3f )  //(43, 60)
 329                {
 330                        is40MHz = 0;
 331                        isShortGI = 1;
 332
 333                        //nDataRate = nDataRate - 44;
 334                }
 335                else if(nDataRate >= 0x40  && nDataRate <= 0x4f ) //(59, 76)
 336                {
 337                        is40MHz = 1;
 338                        isShortGI = 1;
 339
 340                        //nDataRate = nDataRate - 60;
 341                }
 342                return MCS_DATA_RATE[is40MHz][isShortGI][nDataRate&0xf];
 343        }
 344}
 345
 346
 347
 348bool IsHTHalfNmodeAPs(struct ieee80211_device *ieee)
 349{
 350        bool                    retValue = false;
 351        struct ieee80211_network *net = &ieee->current_network;
 352        if((memcmp(net->bssid, BELKINF5D8233V1_RALINK, 3)==0) ||
 353                     (memcmp(net->bssid, BELKINF5D82334V3_RALINK, 3)==0) ||
 354                     (memcmp(net->bssid, PCI_RALINK, 3)==0) ||
 355                     (memcmp(net->bssid, EDIMAX_RALINK, 3)==0) ||
 356                     (memcmp(net->bssid, AIRLINK_RALINK, 3)==0) ||
 357                     (net->ralink_cap_exist))
 358                retValue = true;
 359        else if((memcmp(net->bssid, UNKNOWN_BORADCOM, 3)==0) ||
 360                    (memcmp(net->bssid, LINKSYSWRT330_LINKSYSWRT300_BROADCOM, 3)==0)||
 361                    (memcmp(net->bssid, LINKSYSWRT350_LINKSYSWRT150_BROADCOM, 3)==0)||
 362                    (memcmp(net->bssid, NETGEAR834Bv2_BROADCOM, 3)==0) ||
 363                    (net->broadcom_cap_exist))
 364                  retValue = true;
 365        else if(net->bssht.bdRT2RTAggregation)
 366                retValue = true;
 367        else
 368                retValue = false;
 369
 370        return retValue;
 371}
 372
 373/********************************************************************************************************************
 374 *function:  This function returns peer IOT.
 375 *   input:  struct ieee80211_device*   ieee
 376 *  output:  none
 377 *  return:
 378 *  notice:
 379 * *****************************************************************************************************************/
 380static void HTIOTPeerDetermine(struct ieee80211_device *ieee)
 381{
 382        PRT_HIGH_THROUGHPUT     pHTInfo = ieee->pHTInfo;
 383        struct ieee80211_network *net = &ieee->current_network;
 384        if(net->bssht.bdRT2RTAggregation)
 385                pHTInfo->IOTPeer = HT_IOT_PEER_REALTEK;
 386        else if(net->broadcom_cap_exist)
 387                pHTInfo->IOTPeer = HT_IOT_PEER_BROADCOM;
 388        else if((memcmp(net->bssid, UNKNOWN_BORADCOM, 3)==0) ||
 389                        (memcmp(net->bssid, LINKSYSWRT330_LINKSYSWRT300_BROADCOM, 3)==0)||
 390                        (memcmp(net->bssid, LINKSYSWRT350_LINKSYSWRT150_BROADCOM, 3)==0)||
 391                        (memcmp(net->bssid, NETGEAR834Bv2_BROADCOM, 3)==0) )
 392                pHTInfo->IOTPeer = HT_IOT_PEER_BROADCOM;
 393        else if((memcmp(net->bssid, BELKINF5D8233V1_RALINK, 3)==0) ||
 394                        (memcmp(net->bssid, BELKINF5D82334V3_RALINK, 3)==0) ||
 395                        (memcmp(net->bssid, PCI_RALINK, 3)==0) ||
 396                        (memcmp(net->bssid, EDIMAX_RALINK, 3)==0) ||
 397                        (memcmp(net->bssid, AIRLINK_RALINK, 3)==0) ||
 398                         net->ralink_cap_exist)
 399                pHTInfo->IOTPeer = HT_IOT_PEER_RALINK;
 400        else if(net->atheros_cap_exist)
 401                pHTInfo->IOTPeer = HT_IOT_PEER_ATHEROS;
 402        else if(memcmp(net->bssid, CISCO_BROADCOM, 3)==0)
 403                pHTInfo->IOTPeer = HT_IOT_PEER_CISCO;
 404        else
 405                pHTInfo->IOTPeer = HT_IOT_PEER_UNKNOWN;
 406
 407        IEEE80211_DEBUG(IEEE80211_DL_IOT, "Joseph debug!! IOTPEER: %x\n", pHTInfo->IOTPeer);
 408}
 409/********************************************************************************************************************
 410 *function:  Check whether driver should declare received rate up to MCS13 only since some chipset is not good
 411 *           at receiving MCS14~15 frame from some AP.
 412 *   input:  struct ieee80211_device*   ieee
 413 *           u8 *                       PeerMacAddr
 414 *  output:  none
 415 *  return:  return 1 if driver should declare MCS13 only(otherwise return 0)
 416  * *****************************************************************************************************************/
 417static u8 HTIOTActIsDisableMCS14(struct ieee80211_device *ieee, u8 *PeerMacAddr)
 418{
 419        return 0;
 420 }
 421
 422
 423/**
 424* Function:     HTIOTActIsDisableMCS15
 425*
 426* Overview:     Check whether driver should declare capability of receiving MCS15
 427*
 428* Input:
 429*                       PADAPTER                Adapter,
 430*
 431* Output:               None
 432* Return:       true if driver should disable MCS15
 433* 2008.04.15    Emily
 434*/
 435static bool HTIOTActIsDisableMCS15(struct ieee80211_device *ieee)
 436{
 437        bool retValue = false;
 438
 439#ifdef TODO
 440        // Apply for 819u only
 441#if (HAL_CODE_BASE==RTL8192)
 442
 443#if (DEV_BUS_TYPE == USB_INTERFACE)
 444        // Alway disable MCS15 by Jerry Chang's request.by Emily, 2008.04.15
 445        retValue = true;
 446#elif (DEV_BUS_TYPE == PCI_INTERFACE)
 447        // Enable MCS15 if the peer is Cisco AP. by Emily, 2008.05.12
 448//      if(pBssDesc->bCiscoCapExist)
 449//              retValue = false;
 450//      else
 451                retValue = false;
 452#endif
 453#endif
 454#endif
 455        // Jerry Chang suggest that 8190 1x2 does not need to disable MCS15
 456
 457        return retValue;
 458}
 459
 460/**
 461* Function:     HTIOTActIsDisableMCSTwoSpatialStream
 462*
 463* Overview:     Check whether driver should declare capability of receiving All 2 ss packets
 464*
 465* Input:
 466*                       PADAPTER                Adapter,
 467*
 468* Output:               None
 469* Return:       true if driver should disable all two spatial stream packet
 470* 2008.04.21    Emily
 471*/
 472static bool HTIOTActIsDisableMCSTwoSpatialStream(struct ieee80211_device *ieee,
 473                                                 u8 *PeerMacAddr)
 474{
 475#ifdef TODO
 476        // Apply for 819u only
 477#endif
 478        return false;
 479}
 480
 481/********************************************************************************************************************
 482 *function:  Check whether driver should disable EDCA turbo mode
 483 *   input:  struct ieee80211_device*   ieee
 484 *           u8*                        PeerMacAddr
 485 *  output:  none
 486 *  return:  return 1 if driver should disable EDCA turbo mode(otherwise return 0)
 487  * *****************************************************************************************************************/
 488static u8 HTIOTActIsDisableEDCATurbo(struct ieee80211_device *ieee,
 489                                     u8 *PeerMacAddr)
 490{       /* default enable EDCA Turbo mode. */
 491        return false;
 492}
 493
 494/********************************************************************************************************************
 495 *function:  Check whether we need to use OFDM to sned MGNT frame for broadcom AP
 496 *   input:  struct ieee80211_network *network   //current network we live
 497 *  output:  none
 498 *  return:  return 1 if true
 499  * *****************************************************************************************************************/
 500static u8 HTIOTActIsMgntUseCCK6M(struct ieee80211_network *network)
 501{
 502        u8      retValue = 0;
 503
 504        // 2008/01/25 MH Judeg if we need to use OFDM to sned MGNT frame for broadcom AP.
 505        // 2008/01/28 MH We must prevent that we select null bssid to link.
 506
 507        if (network->broadcom_cap_exist)
 508        {
 509                retValue = 1;
 510        }
 511
 512        return retValue;
 513}
 514
 515static u8 HTIOTActIsCCDFsync(u8 *PeerMacAddr)
 516{
 517        u8      retValue = 0;
 518        if(     (memcmp(PeerMacAddr, UNKNOWN_BORADCOM, 3)==0) ||
 519                (memcmp(PeerMacAddr, LINKSYSWRT330_LINKSYSWRT300_BROADCOM, 3)==0) ||
 520                (memcmp(PeerMacAddr, LINKSYSWRT350_LINKSYSWRT150_BROADCOM, 3) ==0))
 521        {
 522                retValue = 1;
 523        }
 524
 525        return retValue;
 526}
 527
 528void HTResetIOTSetting(
 529        PRT_HIGH_THROUGHPUT             pHTInfo
 530)
 531{
 532        pHTInfo->IOTAction = 0;
 533        pHTInfo->IOTPeer = HT_IOT_PEER_UNKNOWN;
 534}
 535
 536
 537/********************************************************************************************************************
 538 *function:  Construct Capablility Element in Beacon... if HTEnable is turned on
 539 *   input:  struct ieee80211_device*   ieee
 540 *           u8*                        posHTCap //pointer to store Capability Ele
 541 *           u8*                        len //store length of CE
 542 *           u8                         IsEncrypt //whether encrypt, needed further
 543 *  output:  none
 544 *  return:  none
 545 *  notice:  posHTCap can't be null and should be initialized before.
 546  * *****************************************************************************************************************/
 547void HTConstructCapabilityElement(struct ieee80211_device *ieee, u8 *posHTCap, u8 *len, u8 IsEncrypt)
 548{
 549        PRT_HIGH_THROUGHPUT     pHT = ieee->pHTInfo;
 550        PHT_CAPABILITY_ELE      pCapELE = NULL;
 551        //u8 bIsDeclareMCS13;
 552
 553        if ((posHTCap == NULL) || (pHT == NULL))
 554        {
 555                IEEE80211_DEBUG(IEEE80211_DL_ERR, "posHTCap or pHTInfo can't be null in HTConstructCapabilityElement()\n");
 556                return;
 557        }
 558        memset(posHTCap, 0, *len);
 559        if(pHT->ePeerHTSpecVer == HT_SPEC_VER_EWC)
 560        {
 561                u8      EWC11NHTCap[] = {0x00, 0x90, 0x4c, 0x33};       // For 11n EWC definition, 2007.07.17, by Emily
 562                memcpy(posHTCap, EWC11NHTCap, sizeof(EWC11NHTCap));
 563                pCapELE = (PHT_CAPABILITY_ELE)&(posHTCap[4]);
 564        }else
 565        {
 566                pCapELE = (PHT_CAPABILITY_ELE)posHTCap;
 567        }
 568
 569
 570        //HT capability info
 571        pCapELE->AdvCoding              = 0; // This feature is not supported now!!
 572        if(ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev))
 573        {
 574                pCapELE->ChlWidth = 0;
 575        }
 576        else
 577        {
 578                pCapELE->ChlWidth = (pHT->bRegBW40MHz?1:0);
 579        }
 580
 581//      pCapELE->ChlWidth               = (pHT->bRegBW40MHz?1:0);
 582        pCapELE->MimoPwrSave            = pHT->SelfMimoPs;
 583        pCapELE->GreenField             = 0; // This feature is not supported now!!
 584        pCapELE->ShortGI20Mhz           = 1; // We can receive Short GI!!
 585        pCapELE->ShortGI40Mhz           = 1; // We can receive Short GI!!
 586        //DbgPrint("TX HT cap/info ele BW=%d SG20=%d SG40=%d\n\r",
 587                //pCapELE->ChlWidth, pCapELE->ShortGI20Mhz, pCapELE->ShortGI40Mhz);
 588        pCapELE->TxSTBC                 = 1;
 589        pCapELE->RxSTBC                 = 0;
 590        pCapELE->DelayBA                = 0;    // Do not support now!!
 591        pCapELE->MaxAMSDUSize   = (MAX_RECEIVE_BUFFER_SIZE>=7935)?1:0;
 592        pCapELE->DssCCk                 = ((pHT->bRegBW40MHz)?(pHT->bRegSuppCCK?1:0):0);
 593        pCapELE->PSMP                   = 0; // Do not support now!!
 594        pCapELE->LSigTxopProtect        = 0; // Do not support now!!
 595
 596
 597        //MAC HT parameters info
 598        // TODO: Nedd to take care of this part
 599        IEEE80211_DEBUG(IEEE80211_DL_HT, "TX HT cap/info ele BW=%d MaxAMSDUSize:%d DssCCk:%d\n", pCapELE->ChlWidth, pCapELE->MaxAMSDUSize, pCapELE->DssCCk);
 600
 601        if (IsEncrypt) {
 602                pCapELE->MPDUDensity    = 7; // 8us
 603                pCapELE->MaxRxAMPDUFactor       = 2; // 2 is for 32 K and 3 is 64K
 604        }
 605        else
 606        {
 607                pCapELE->MaxRxAMPDUFactor       = 3; // 2 is for 32 K and 3 is 64K
 608                pCapELE->MPDUDensity    = 0; // no density
 609        }
 610
 611        //Supported MCS set
 612        memcpy(pCapELE->MCS, ieee->Regdot11HTOperationalRateSet, 16);
 613        if(pHT->IOTAction & HT_IOT_ACT_DISABLE_MCS15)
 614                pCapELE->MCS[1] &= 0x7f;
 615
 616        if(pHT->IOTAction & HT_IOT_ACT_DISABLE_MCS14)
 617                pCapELE->MCS[1] &= 0xbf;
 618
 619        if(pHT->IOTAction & HT_IOT_ACT_DISABLE_ALL_2SS)
 620                pCapELE->MCS[1] &= 0x00;
 621
 622        // 2008.06.12
 623        // For RTL819X, if pairwisekey = wep/tkip, ap is ralink, we support only MCS0~7.
 624        if (ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev))
 625        {
 626                int i;
 627                for(i = 1; i< 16; i++)
 628                        pCapELE->MCS[i] = 0;
 629        }
 630
 631        //Extended HT Capability Info
 632        memset(&pCapELE->ExtHTCapInfo, 0, 2);
 633
 634
 635        //TXBF Capabilities
 636        memset(pCapELE->TxBFCap, 0, 4);
 637
 638        //Antenna Selection Capabilities
 639        pCapELE->ASCap = 0;
 640//add 2 to give space for element ID and len when construct frames
 641        if(pHT->ePeerHTSpecVer == HT_SPEC_VER_EWC)
 642                *len = 30 + 2;
 643        else
 644                *len = 26 + 2;
 645
 646
 647
 648//      IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA | IEEE80211_DL_HT, posHTCap, *len -2);
 649
 650        //Print each field in detail. Driver should not print out this message by default
 651//      HTDebugHTCapability(posHTCap, (u8*)"HTConstructCapability()");
 652        return;
 653
 654}
 655/********************************************************************************************************************
 656 *function:  Construct  Information Element in Beacon... if HTEnable is turned on
 657 *   input:  struct ieee80211_device*   ieee
 658 *           u8*                        posHTCap //pointer to store Information Ele
 659 *           u8*                        len   //store len of
 660 *           u8                         IsEncrypt //whether encrypt, needed further
 661 *  output:  none
 662 *  return:  none
 663 *  notice:  posHTCap can't be null and be initialized before. only AP and IBSS sta should do this
 664  * *****************************************************************************************************************/
 665void HTConstructInfoElement(struct ieee80211_device *ieee, u8 *posHTInfo, u8 *len, u8 IsEncrypt)
 666{
 667        PRT_HIGH_THROUGHPUT     pHT = ieee->pHTInfo;
 668        PHT_INFORMATION_ELE             pHTInfoEle = (PHT_INFORMATION_ELE)posHTInfo;
 669        if ((posHTInfo == NULL) || (pHTInfoEle == NULL))
 670        {
 671                IEEE80211_DEBUG(IEEE80211_DL_ERR, "posHTInfo or pHTInfoEle can't be null in HTConstructInfoElement()\n");
 672                return;
 673        }
 674
 675        memset(posHTInfo, 0, *len);
 676        if ( (ieee->iw_mode == IW_MODE_ADHOC) || (ieee->iw_mode == IW_MODE_MASTER)) //ap mode is not currently supported
 677        {
 678                pHTInfoEle->ControlChl                  = ieee->current_network.channel;
 679                pHTInfoEle->ExtChlOffset                        = ((!pHT->bRegBW40MHz)?HT_EXTCHNL_OFFSET_NO_EXT:
 680                                                                                        (ieee->current_network.channel<=6)?
 681                                                                                                HT_EXTCHNL_OFFSET_UPPER:HT_EXTCHNL_OFFSET_LOWER);
 682                pHTInfoEle->RecommemdedTxWidth  = pHT->bRegBW40MHz;
 683                pHTInfoEle->RIFS                                        = 0;
 684                pHTInfoEle->PSMPAccessOnly              = 0;
 685                pHTInfoEle->SrvIntGranularity           = 0;
 686                pHTInfoEle->OptMode                             = pHT->CurrentOpMode;
 687                pHTInfoEle->NonGFDevPresent             = 0;
 688                pHTInfoEle->DualBeacon                  = 0;
 689                pHTInfoEle->SecondaryBeacon             = 0;
 690                pHTInfoEle->LSigTxopProtectFull         = 0;
 691                pHTInfoEle->PcoActive                           = 0;
 692                pHTInfoEle->PcoPhase                            = 0;
 693
 694                memset(pHTInfoEle->BasicMSC, 0, 16);
 695
 696
 697                *len = 22 + 2; //same above
 698
 699        }
 700        else
 701        {
 702                //STA should not generate High Throughput Information Element
 703                *len = 0;
 704        }
 705        //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA | IEEE80211_DL_HT, posHTInfo, *len - 2);
 706        //HTDebugHTInfo(posHTInfo, "HTConstructInforElement");
 707        return;
 708}
 709
 710/*
 711  *  According to experiment, Realtek AP to STA (based on rtl8190) may achieve best performance
 712  *  if both STA and AP set limitation of aggregation size to 32K, that is, set AMPDU density to 2
 713  *  (Ref: IEEE 11n specification). However, if Realtek STA associates to other AP, STA should set
 714  *  limitation of aggregation size to 8K, otherwise, performance of traffic stream from STA to AP
 715  *  will be much less than the traffic stream from AP to STA if both of the stream runs concurrently
 716  *  at the same time.
 717  *
 718  *  Frame Format
 719  *  Element ID         Length          OUI                     Type1           Reserved
 720  *  1 byte                     1 byte          3 bytes         1 byte          1 byte
 721  *
 722  *  OUI                = 0x00, 0xe0, 0x4c,
 723  *  Type       = 0x02
 724  *  Reserved   = 0x00
 725  *
 726  *  2007.8.21 by Emily
 727*/
 728/********************************************************************************************************************
 729 *function:  Construct  Information Element in Beacon... in RT2RT condition
 730 *   input:  struct ieee80211_device*   ieee
 731 *           u8*                        posRT2RTAgg //pointer to store Information Ele
 732 *           u8*                        len   //store len
 733 *  output:  none
 734 *  return:  none
 735 *  notice:
 736  * *****************************************************************************************************************/
 737void HTConstructRT2RTAggElement(struct ieee80211_device *ieee, u8 *posRT2RTAgg, u8 *len)
 738{
 739        if (posRT2RTAgg == NULL) {
 740                IEEE80211_DEBUG(IEEE80211_DL_ERR, "posRT2RTAgg can't be null in HTConstructRT2RTAggElement()\n");
 741                return;
 742        }
 743        memset(posRT2RTAgg, 0, *len);
 744        *posRT2RTAgg++ = 0x00;
 745        *posRT2RTAgg++ = 0xe0;
 746        *posRT2RTAgg++ = 0x4c;
 747        *posRT2RTAgg++ = 0x02;
 748        *posRT2RTAgg++ = 0x01;
 749        *posRT2RTAgg = 0x10;//*posRT2RTAgg = 0x02;
 750
 751        if (ieee->bSupportRemoteWakeUp) {
 752                *posRT2RTAgg |= 0x08;//RT_HT_CAP_USE_WOW;
 753        }
 754
 755        *len = 6 + 2;
 756        return;
 757#ifdef TODO
 758#if (HAL_CODE_BASE == RTL8192 && DEV_BUS_TYPE == USB_INTERFACE)
 759        /*
 760        //Emily. If it is required to Ask Realtek AP to send AMPDU during AES mode, enable this
 761           section of code.
 762        if(IS_UNDER_11N_AES_MODE(Adapter))
 763        {
 764                posRT2RTAgg->Octet[5] |=RT_HT_CAP_USE_AMPDU;
 765        }else
 766        {
 767                posRT2RTAgg->Octet[5] &= 0xfb;
 768        }
 769        */
 770
 771#else
 772        // Do Nothing
 773#endif
 774
 775        posRT2RTAgg->Length = 6;
 776#endif
 777
 778
 779
 780
 781}
 782
 783
 784/********************************************************************************************************************
 785 *function:  Pick the right Rate Adaptive table to use
 786 *   input:  struct ieee80211_device*   ieee
 787 *           u8*                        pOperateMCS //A pointer to MCS rate bitmap
 788 *  return:  always we return true
 789 *  notice:
 790  * *****************************************************************************************************************/
 791static u8 HT_PickMCSRate(struct ieee80211_device *ieee, u8 *pOperateMCS)
 792{
 793        u8                                      i;
 794        if (pOperateMCS == NULL)
 795        {
 796                IEEE80211_DEBUG(IEEE80211_DL_ERR, "pOperateMCS can't be null in HT_PickMCSRate()\n");
 797                return false;
 798        }
 799
 800        switch (ieee->mode)
 801        {
 802        case IEEE_A:
 803        case IEEE_B:
 804        case IEEE_G:
 805                        //legacy rate routine handled at selectedrate
 806
 807                        //no MCS rate
 808                        for(i=0;i<=15;i++){
 809                                pOperateMCS[i] = 0;
 810                        }
 811                        break;
 812
 813        case IEEE_N_24G:        //assume CCK rate ok
 814        case IEEE_N_5G:
 815                        // Legacy part we only use 6, 5.5,2,1 for N_24G and 6 for N_5G.
 816                        // Legacy part shall be handled at SelectRateSet().
 817
 818                        //HT part
 819                        // TODO: may be different if we have different number of antenna
 820                        pOperateMCS[0] &=RATE_ADPT_1SS_MASK;    //support MCS 0~7
 821                        pOperateMCS[1] &=RATE_ADPT_2SS_MASK;
 822                        pOperateMCS[3] &=RATE_ADPT_MCS32_MASK;
 823                        break;
 824
 825        //should never reach here
 826        default:
 827
 828                        break;
 829
 830        }
 831
 832        return true;
 833}
 834
 835/*
 836*       Description:
 837*               This function will get the highest speed rate in input MCS set.
 838*
 839*       /param  Adapter                 Pionter to Adapter entity
 840*                       pMCSRateSet             Pointer to MCS rate bitmap
 841*                       pMCSFilter              Pointer to MCS rate filter
 842*
 843*       /return Highest MCS rate included in pMCSRateSet and filtered by pMCSFilter.
 844*
 845*/
 846/********************************************************************************************************************
 847 *function:  This function will get the highest speed rate in input MCS set.
 848 *   input:  struct ieee80211_device*   ieee
 849 *           u8*                        pMCSRateSet //Pointer to MCS rate bitmap
 850 *           u8*                        pMCSFilter //Pointer to MCS rate filter
 851 *  return:  Highest MCS rate included in pMCSRateSet and filtered by pMCSFilter
 852 *  notice:
 853  * *****************************************************************************************************************/
 854u8 HTGetHighestMCSRate(struct ieee80211_device *ieee, u8 *pMCSRateSet, u8 *pMCSFilter)
 855{
 856        u8              i, j;
 857        u8              bitMap;
 858        u8              mcsRate = 0;
 859        u8              availableMcsRate[16];
 860        if (pMCSRateSet == NULL || pMCSFilter == NULL)
 861        {
 862                IEEE80211_DEBUG(IEEE80211_DL_ERR, "pMCSRateSet or pMCSFilter can't be null in HTGetHighestMCSRate()\n");
 863                return false;
 864        }
 865        for(i=0; i<16; i++)
 866                availableMcsRate[i] = pMCSRateSet[i] & pMCSFilter[i];
 867
 868        for(i = 0; i < 16; i++)
 869        {
 870                if(availableMcsRate[i] != 0)
 871                        break;
 872        }
 873        if(i == 16)
 874                return false;
 875
 876        for(i = 0; i < 16; i++)
 877        {
 878                if (availableMcsRate[i] != 0)
 879                {
 880                        bitMap = availableMcsRate[i];
 881                        for(j = 0; j < 8; j++)
 882                        {
 883                                if ((bitMap%2) != 0)
 884                                {
 885                                        if(HTMcsToDataRate(ieee, (8*i+j)) > HTMcsToDataRate(ieee, mcsRate))
 886                                                mcsRate = (8*i+j);
 887                                }
 888                                bitMap >>= 1;
 889                        }
 890                }
 891        }
 892        return (mcsRate|0x80);
 893}
 894
 895
 896
 897/*
 898**
 899**1.Filter our operation rate set with AP's rate set
 900**2.shall reference channel bandwidth, STBC, Antenna number
 901**3.generate rate adative table for firmware
 902**David 20060906
 903**
 904** \pHTSupportedCap: the connected STA's supported rate Capability element
 905*/
 906static u8 HTFilterMCSRate(struct ieee80211_device *ieee, u8 *pSupportMCS,
 907                          u8 *pOperateMCS)
 908{
 909
 910        u8 i=0;
 911
 912        // filter out operational rate set not supported by AP, the length of it is 16
 913        for(i=0;i<=15;i++){
 914                pOperateMCS[i] = ieee->Regdot11HTOperationalRateSet[i]&pSupportMCS[i];
 915        }
 916
 917
 918        // TODO: adjust our operational rate set  according to our channel bandwidth, STBC and Antenna number
 919
 920        // TODO: fill suggested rate adaptive rate index and give firmware info using Tx command packet
 921        // we also shall suggested the first start rate set according to our singal strength
 922        HT_PickMCSRate(ieee, pOperateMCS);
 923
 924        // For RTL819X, if pairwisekey = wep/tkip, we support only MCS0~7.
 925        if(ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev))
 926                pOperateMCS[1] = 0;
 927
 928        //
 929        // For RTL819X, we support only MCS0~15.
 930        // And also, we do not know how to use MCS32 now.
 931        //
 932        for(i=2; i<=15; i++)
 933                pOperateMCS[i] = 0;
 934
 935        return true;
 936}
 937void HTSetConnectBwMode(struct ieee80211_device *ieee, HT_CHANNEL_WIDTH Bandwidth, HT_EXTCHNL_OFFSET    Offset);
 938void HTOnAssocRsp(struct ieee80211_device *ieee)
 939{
 940        PRT_HIGH_THROUGHPUT     pHTInfo = ieee->pHTInfo;
 941        PHT_CAPABILITY_ELE              pPeerHTCap = NULL;
 942        PHT_INFORMATION_ELE             pPeerHTInfo = NULL;
 943        u16     nMaxAMSDUSize = 0;
 944        u8      *pMcsFilter = NULL;
 945
 946        static u8                               EWC11NHTCap[] = {0x00, 0x90, 0x4c, 0x33};               // For 11n EWC definition, 2007.07.17, by Emily
 947        static u8                               EWC11NHTInfo[] = {0x00, 0x90, 0x4c, 0x34};      // For 11n EWC definition, 2007.07.17, by Emily
 948
 949        if (!pHTInfo->bCurrentHTSupport) {
 950                IEEE80211_DEBUG(IEEE80211_DL_ERR, "<=== HTOnAssocRsp(): HT_DISABLE\n");
 951                return;
 952        }
 953        IEEE80211_DEBUG(IEEE80211_DL_HT, "===> HTOnAssocRsp_wq(): HT_ENABLE\n");
 954//      IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, pHTInfo->PeerHTCapBuf, sizeof(HT_CAPABILITY_ELE));
 955//      IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, pHTInfo->PeerHTInfoBuf, sizeof(HT_INFORMATION_ELE));
 956
 957//      HTDebugHTCapability(pHTInfo->PeerHTCapBuf,"HTOnAssocRsp_wq");
 958//      HTDebugHTInfo(pHTInfo->PeerHTInfoBuf,"HTOnAssocRsp_wq");
 959        //
 960        if (!memcmp(pHTInfo->PeerHTCapBuf, EWC11NHTCap, sizeof(EWC11NHTCap)))
 961                pPeerHTCap = (PHT_CAPABILITY_ELE)(&pHTInfo->PeerHTCapBuf[4]);
 962        else
 963                pPeerHTCap = (PHT_CAPABILITY_ELE)(pHTInfo->PeerHTCapBuf);
 964
 965        if(!memcmp(pHTInfo->PeerHTInfoBuf, EWC11NHTInfo, sizeof(EWC11NHTInfo)))
 966                pPeerHTInfo = (PHT_INFORMATION_ELE)(&pHTInfo->PeerHTInfoBuf[4]);
 967        else
 968                pPeerHTInfo = (PHT_INFORMATION_ELE)(pHTInfo->PeerHTInfoBuf);
 969
 970
 971        ////////////////////////////////////////////////////////
 972        // Configurations:
 973        ////////////////////////////////////////////////////////
 974        IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA|IEEE80211_DL_HT, pPeerHTCap, sizeof(HT_CAPABILITY_ELE));
 975//      IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA|IEEE80211_DL_HT, pPeerHTInfo, sizeof(HT_INFORMATION_ELE));
 976        // Config Supported Channel Width setting
 977        //
 978        HTSetConnectBwMode(ieee, (HT_CHANNEL_WIDTH)(pPeerHTCap->ChlWidth), (HT_EXTCHNL_OFFSET)(pPeerHTInfo->ExtChlOffset));
 979
 980        pHTInfo->bCurTxBW40MHz = (pPeerHTInfo->RecommemdedTxWidth == 1);
 981
 982        //
 983        // Update short GI/ long GI setting
 984        //
 985        // TODO:
 986        pHTInfo->bCurShortGI20MHz = pHTInfo->bRegShortGI20MHz &&
 987                                    (pPeerHTCap->ShortGI20Mhz == 1);
 988        pHTInfo->bCurShortGI40MHz = pHTInfo->bRegShortGI40MHz &&
 989                                   (pPeerHTCap->ShortGI40Mhz == 1);
 990
 991        //
 992        // Config TX STBC setting
 993        //
 994        // TODO:
 995
 996        //
 997        // Config DSSS/CCK  mode in 40MHz mode
 998        //
 999        // TODO:
1000        pHTInfo->bCurSuppCCK = pHTInfo->bRegSuppCCK &&

1001                               (pPeerHTCap->DssCCk == 1);
1002
1003
1004        //
1005        // Config and configure A-MSDU setting
1006        //
1007        pHTInfo->bCurrent_AMSDU_Support = pHTInfo->bAMSDU_Support;
1008
1009        nMaxAMSDUSize = (pPeerHTCap->MaxAMSDUSize==0)?3839:7935;
1010
1011        if(pHTInfo->nAMSDU_MaxSize > nMaxAMSDUSize )
1012                pHTInfo->nCurrent_AMSDU_MaxSize = nMaxAMSDUSize;
1013        else
1014                pHTInfo->nCurrent_AMSDU_MaxSize = pHTInfo->nAMSDU_MaxSize;
1015
1016
1017        //
1018        // Config A-MPDU setting
1019        //
1020        pHTInfo->bCurrentAMPDUEnable = pHTInfo->bAMPDUEnable;
1021
1022        // <1> Decide AMPDU Factor
1023
1024        // By Emily
1025        if(!pHTInfo->bRegRT2RTAggregation)
1026        {
1027                // Decide AMPDU Factor according to protocol handshake
1028                if(pHTInfo->AMPDU_Factor > pPeerHTCap->MaxRxAMPDUFactor)
1029                        pHTInfo->CurrentAMPDUFactor = pPeerHTCap->MaxRxAMPDUFactor;
1030                else
1031                        pHTInfo->CurrentAMPDUFactor = pHTInfo->AMPDU_Factor;
1032
1033        }else
1034        {
1035                // Set MPDU density to 2 to Realtek AP, and set it to 0 for others
1036                // Replace MPDU factor declared in original association response frame format. 2007.08.20 by Emily
1037                if (ieee->current_network.bssht.bdRT2RTAggregation)
1038                {
1039                        if (ieee->pairwise_key_type != KEY_TYPE_NA)
1040                                // Realtek may set 32k in security mode and 64k for others
1041                                pHTInfo->CurrentAMPDUFactor = pPeerHTCap->MaxRxAMPDUFactor;
1042                        else
1043                                pHTInfo->CurrentAMPDUFactor = HT_AGG_SIZE_64K;
1044                }else
1045                {
1046                        if(pPeerHTCap->MaxRxAMPDUFactor < HT_AGG_SIZE_32K)
1047                                pHTInfo->CurrentAMPDUFactor = pPeerHTCap->MaxRxAMPDUFactor;
1048                        else
1049                                pHTInfo->CurrentAMPDUFactor = HT_AGG_SIZE_32K;
1050                }
1051        }
1052
1053        // <2> Set AMPDU Minimum MPDU Start Spacing
1054        // 802.11n 3.0 section 9.7d.3
1055        if(pHTInfo->MPDU_Density > pPeerHTCap->MPDUDensity)
1056                pHTInfo->CurrentMPDUDensity = pHTInfo->MPDU_Density;
1057        else
1058                pHTInfo->CurrentMPDUDensity = pPeerHTCap->MPDUDensity;
1059        if(ieee->pairwise_key_type != KEY_TYPE_NA )
1060                pHTInfo->CurrentMPDUDensity     = 7; // 8us
1061        // Force TX AMSDU
1062
1063        // Lanhsin: mark for tmp to avoid deauth by ap from  s3
1064        //if(memcmp(pMgntInfo->Bssid, NETGEAR834Bv2_BROADCOM, 3)==0)
1065        if (0)
1066                {
1067
1068                        pHTInfo->bCurrentAMPDUEnable = false;
1069                        pHTInfo->ForcedAMSDUMode = HT_AGG_FORCE_ENABLE;
1070                        pHTInfo->ForcedAMSDUMaxSize = 7935;
1071
1072                pHTInfo->IOTAction |=  HT_IOT_ACT_TX_USE_AMSDU_8K;
1073        }
1074
1075        // Rx Reorder Setting
1076        pHTInfo->bCurRxReorderEnable = pHTInfo->bRegRxReorderEnable;
1077
1078        //
1079        // Filter out unsupported HT rate for this AP
1080        // Update RATR table
1081        // This is only for 8190 ,8192 or later product which using firmware to handle rate adaptive mechanism.
1082        //
1083
1084        // Handle Ralink AP bad MCS rate set condition. Joseph.
1085        // This fix the bug of Ralink AP. This may be removed in the future.
1086        if(pPeerHTCap->MCS[0] == 0)
1087                pPeerHTCap->MCS[0] = 0xff;
1088
1089        HTFilterMCSRate(ieee, pPeerHTCap->MCS, ieee->dot11HTOperationalRateSet);
1090
1091        //
1092        // Config MIMO Power Save setting
1093        //
1094        pHTInfo->PeerMimoPs = pPeerHTCap->MimoPwrSave;
1095        if(pHTInfo->PeerMimoPs == MIMO_PS_STATIC)
1096                pMcsFilter = MCS_FILTER_1SS;
1097        else
1098                pMcsFilter = MCS_FILTER_ALL;
1099        //WB add for MCS8 bug
1100//      pMcsFilter = MCS_FILTER_1SS;
1101        ieee->HTHighestOperaRate = HTGetHighestMCSRate(ieee, ieee->dot11HTOperationalRateSet, pMcsFilter);
1102        ieee->HTCurrentOperaRate = ieee->HTHighestOperaRate;
1103
1104        //
1105        // Config current operation mode.
1106        //
1107        pHTInfo->CurrentOpMode = pPeerHTInfo->OptMode;
1108
1109
1110
1111}
1112
1113void HTSetConnectBwModeCallback(struct ieee80211_device *ieee);
1114/********************************************************************************************************************
1115 *function:  initialize HT info(struct PRT_HIGH_THROUGHPUT)
1116 *   input:  struct ieee80211_device*   ieee
1117 *  output:  none
1118 *  return:  none
1119 *  notice: This function is called when *  (1) MPInitialization Phase *  (2) Receiving of Deauthentication from AP
1120********************************************************************************************************************/
1121// TODO: Should this funciton be called when receiving of Disassociation?
1122void HTInitializeHTInfo(struct ieee80211_device *ieee)
1123{
1124        PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
1125
1126        //
1127        // These parameters will be reset when receiving deauthentication packet
1128        //
1129        IEEE80211_DEBUG(IEEE80211_DL_HT, "===========>%s()\n", __func__);
1130        pHTInfo->bCurrentHTSupport = false;
1131
1132        // 40MHz channel support
1133        pHTInfo->bCurBW40MHz = false;
1134        pHTInfo->bCurTxBW40MHz = false;
1135
1136        // Short GI support
1137        pHTInfo->bCurShortGI20MHz = false;
1138        pHTInfo->bCurShortGI40MHz = false;
1139        pHTInfo->bForcedShortGI = false;
1140
1141        // CCK rate support
1142        // This flag is set to true to support CCK rate by default.
1143        // It will be affected by "pHTInfo->bRegSuppCCK" and AP capabilities only when associate to
1144        // 11N BSS.
1145        pHTInfo->bCurSuppCCK = true;
1146
1147        // AMSDU related
1148        pHTInfo->bCurrent_AMSDU_Support = false;
1149        pHTInfo->nCurrent_AMSDU_MaxSize = pHTInfo->nAMSDU_MaxSize;
1150
1151        // AMPUD related
1152        pHTInfo->CurrentMPDUDensity = pHTInfo->MPDU_Density;
1153        pHTInfo->CurrentAMPDUFactor = pHTInfo->AMPDU_Factor;
1154
1155
1156
1157        // Initialize all of the parameters related to 11n
1158        memset((void *)(&(pHTInfo->SelfHTCap)), 0, sizeof(pHTInfo->SelfHTCap));
1159        memset((void *)(&(pHTInfo->SelfHTInfo)), 0, sizeof(pHTInfo->SelfHTInfo));
1160        memset((void *)(&(pHTInfo->PeerHTCapBuf)), 0, sizeof(pHTInfo->PeerHTCapBuf));
1161        memset((void *)(&(pHTInfo->PeerHTInfoBuf)), 0, sizeof(pHTInfo->PeerHTInfoBuf));
1162
1163        pHTInfo->bSwBwInProgress = false;
1164        pHTInfo->ChnlOp = CHNLOP_NONE;
1165
1166        // Set default IEEE spec for Draft N
1167        pHTInfo->ePeerHTSpecVer = HT_SPEC_VER_IEEE;
1168
1169        // Realtek proprietary aggregation mode
1170        pHTInfo->bCurrentRT2RTAggregation = false;
1171        pHTInfo->bCurrentRT2RTLongSlotTime = false;
1172        pHTInfo->IOTPeer = 0;
1173        pHTInfo->IOTAction = 0;
1174
1175        //MCS rate initialized here
1176        {
1177                u8 *RegHTSuppRateSets = &(ieee->RegHTSuppRateSet[0]);
1178                RegHTSuppRateSets[0] = 0xFF;    //support MCS 0~7
1179                RegHTSuppRateSets[1] = 0xFF;    //support MCS 8~15
1180                RegHTSuppRateSets[4] = 0x01;    //support MCS 32
1181        }
1182}
1183/********************************************************************************************************************
1184 *function:  initialize Bss HT structure(struct PBSS_HT)
1185 *   input:  PBSS_HT pBssHT //to be initialized
1186 *  output:  none
1187 *  return:  none
1188 *  notice: This function is called when initialize network structure
1189********************************************************************************************************************/
1190void HTInitializeBssDesc(PBSS_HT pBssHT)
1191{
1192
1193        pBssHT->bdSupportHT = false;
1194        memset(pBssHT->bdHTCapBuf, 0, sizeof(pBssHT->bdHTCapBuf));
1195        pBssHT->bdHTCapLen = 0;
1196        memset(pBssHT->bdHTInfoBuf, 0, sizeof(pBssHT->bdHTInfoBuf));
1197        pBssHT->bdHTInfoLen = 0;
1198
1199        pBssHT->bdHTSpecVer= HT_SPEC_VER_IEEE;
1200
1201        pBssHT->bdRT2RTAggregation = false;
1202        pBssHT->bdRT2RTLongSlotTime = false;
1203}
1204/********************************************************************************************************************
1205 *function:  initialize Bss HT structure(struct PBSS_HT)
1206 *   input:  struct ieee80211_device    *ieee
1207 *           struct ieee80211_network   *pNetwork //usually current network we are live in
1208 *  output:  none
1209 *  return:  none
1210 *  notice: This function should ONLY be called before association
1211********************************************************************************************************************/
1212void HTResetSelfAndSavePeerSetting(struct ieee80211_device *ieee,       struct ieee80211_network *pNetwork)
1213{
1214        PRT_HIGH_THROUGHPUT             pHTInfo = ieee->pHTInfo;
1215//      u16                                             nMaxAMSDUSize;
1216//      PHT_CAPABILITY_ELE              pPeerHTCap = (PHT_CAPABILITY_ELE)pNetwork->bssht.bdHTCapBuf;
1217//      PHT_INFORMATION_ELE             pPeerHTInfo = (PHT_INFORMATION_ELE)pNetwork->bssht.bdHTInfoBuf;
1218//      u8*     pMcsFilter;
1219        u8      bIOTAction = 0;
1220
1221        //
1222        //  Save Peer Setting before Association
1223        //
1224        IEEE80211_DEBUG(IEEE80211_DL_HT, "==============>%s()\n", __func__);
1225        /*unmark bEnableHT flag here is the same reason why unmarked in function ieee80211_softmac_new_net. WB 2008.09.10*/
1226//      if( pHTInfo->bEnableHT &&  pNetwork->bssht.bdSupportHT)
1227        if (pNetwork->bssht.bdSupportHT)
1228        {
1229                pHTInfo->bCurrentHTSupport = true;
1230                pHTInfo->ePeerHTSpecVer = pNetwork->bssht.bdHTSpecVer;
1231
1232                // Save HTCap and HTInfo information Element
1233                if(pNetwork->bssht.bdHTCapLen > 0 &&    pNetwork->bssht.bdHTCapLen <= sizeof(pHTInfo->PeerHTCapBuf))
1234                        memcpy(pHTInfo->PeerHTCapBuf, pNetwork->bssht.bdHTCapBuf, pNetwork->bssht.bdHTCapLen);
1235
1236                if(pNetwork->bssht.bdHTInfoLen > 0 && pNetwork->bssht.bdHTInfoLen <= sizeof(pHTInfo->PeerHTInfoBuf))
1237                        memcpy(pHTInfo->PeerHTInfoBuf, pNetwork->bssht.bdHTInfoBuf, pNetwork->bssht.bdHTInfoLen);
1238
1239                // Check whether RT to RT aggregation mode is enabled
1240                if(pHTInfo->bRegRT2RTAggregation)
1241                {
1242                        pHTInfo->bCurrentRT2RTAggregation = pNetwork->bssht.bdRT2RTAggregation;
1243                        pHTInfo->bCurrentRT2RTLongSlotTime = pNetwork->bssht.bdRT2RTLongSlotTime;
1244                }
1245                else
1246                {
1247                        pHTInfo->bCurrentRT2RTAggregation = false;
1248                        pHTInfo->bCurrentRT2RTLongSlotTime = false;
1249                }
1250
1251                // Determine the IOT Peer Vendor.
1252                HTIOTPeerDetermine(ieee);
1253
1254                // Decide IOT Action
1255                // Must be called after the parameter of pHTInfo->bCurrentRT2RTAggregation is decided
1256                pHTInfo->IOTAction = 0;
1257                bIOTAction = HTIOTActIsDisableMCS14(ieee, pNetwork->bssid);
1258                if(bIOTAction)
1259                        pHTInfo->IOTAction |= HT_IOT_ACT_DISABLE_MCS14;
1260
1261                bIOTAction = HTIOTActIsDisableMCS15(ieee);
1262                if(bIOTAction)
1263                        pHTInfo->IOTAction |= HT_IOT_ACT_DISABLE_MCS15;
1264
1265                bIOTAction = HTIOTActIsDisableMCSTwoSpatialStream(ieee, pNetwork->bssid);
1266                if(bIOTAction)
1267                        pHTInfo->IOTAction |= HT_IOT_ACT_DISABLE_ALL_2SS;
1268
1269
1270                bIOTAction = HTIOTActIsDisableEDCATurbo(ieee, pNetwork->bssid);
1271                if(bIOTAction)
1272                        pHTInfo->IOTAction |= HT_IOT_ACT_DISABLE_EDCA_TURBO;
1273
1274                bIOTAction = HTIOTActIsMgntUseCCK6M(pNetwork);
1275                if(bIOTAction)
1276                        pHTInfo->IOTAction |= HT_IOT_ACT_MGNT_USE_CCK_6M;
1277
1278                bIOTAction = HTIOTActIsCCDFsync(pNetwork->bssid);
1279                if(bIOTAction)
1280                        pHTInfo->IOTAction |= HT_IOT_ACT_CDD_FSYNC;
1281
1282
1283        }
1284        else
1285        {
1286                pHTInfo->bCurrentHTSupport = false;
1287                pHTInfo->bCurrentRT2RTAggregation = false;
1288                pHTInfo->bCurrentRT2RTLongSlotTime = false;
1289
1290                pHTInfo->IOTAction = 0;
1291        }
1292
1293}
1294
1295void HTUpdateSelfAndPeerSetting(struct ieee80211_device *ieee,  struct ieee80211_network *pNetwork)
1296{
1297        PRT_HIGH_THROUGHPUT     pHTInfo = ieee->pHTInfo;
1298//      PHT_CAPABILITY_ELE              pPeerHTCap = (PHT_CAPABILITY_ELE)pNetwork->bssht.bdHTCapBuf;
1299        PHT_INFORMATION_ELE             pPeerHTInfo = (PHT_INFORMATION_ELE)pNetwork->bssht.bdHTInfoBuf;
1300
1301        if (pHTInfo->bCurrentHTSupport)
1302        {
1303                //
1304                // Config current operation mode.
1305                //
1306                if(pNetwork->bssht.bdHTInfoLen != 0)
1307                        pHTInfo->CurrentOpMode = pPeerHTInfo->OptMode;
1308
1309                //
1310                // <TODO: Config according to OBSS non-HT STA present!!>
1311                //
1312        }
1313}
1314EXPORT_SYMBOL(HTUpdateSelfAndPeerSetting);
1315
1316/********************************************************************************************************************
1317 *function:  check whether HT control field exists
1318 *   input:  struct ieee80211_device    *ieee
1319 *           u8*                        pFrame //coming skb->data
1320 *  output:  none
1321 *  return:  return true if HT control field exists(false otherwise)
1322 *  notice:
1323********************************************************************************************************************/
1324u8 HTCCheck(struct ieee80211_device *ieee, u8 *pFrame)
1325{
1326        if (ieee->pHTInfo->bCurrentHTSupport)
1327        {
1328                if ((IsQoSDataFrame(pFrame) && Frame_Order(pFrame)) == 1) {
1329                        IEEE80211_DEBUG(IEEE80211_DL_HT, "HT CONTROL FILED EXIST!!\n");
1330                        return true;
1331                }
1332        }
1333        return false;
1334}
1335
1336//
1337// This function set bandwidth mode in protocol layer.
1338//
1339void HTSetConnectBwMode(struct ieee80211_device *ieee, HT_CHANNEL_WIDTH Bandwidth, HT_EXTCHNL_OFFSET    Offset)
1340{
1341        PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
1342//      u32 flags = 0;
1343
1344        if(!pHTInfo->bRegBW40MHz)
1345                return;
1346
1347
1348
1349        // To reduce dummy operation
1350//      if((pHTInfo->bCurBW40MHz==false && Bandwidth==HT_CHANNEL_WIDTH_20) ||
1351//         (pHTInfo->bCurBW40MHz==true && Bandwidth==HT_CHANNEL_WIDTH_20_40 && Offset==pHTInfo->CurSTAExtChnlOffset))
1352//              return;
1353
1354//      spin_lock_irqsave(&(ieee->bw_spinlock), flags);
1355        if (pHTInfo->bSwBwInProgress) {
1356//              spin_unlock_irqrestore(&(ieee->bw_spinlock), flags);
1357                return;
1358        }
1359        //if in half N mode, set to 20M bandwidth please 09.08.2008 WB.
1360        if(Bandwidth==HT_CHANNEL_WIDTH_20_40 && (!ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev)))
1361         {
1362                        // Handle Illegal extension channel offset!!
1363                if(ieee->current_network.channel<2 && Offset==HT_EXTCHNL_OFFSET_LOWER)
1364                        Offset = HT_EXTCHNL_OFFSET_NO_EXT;
1365                if(Offset==HT_EXTCHNL_OFFSET_UPPER || Offset==HT_EXTCHNL_OFFSET_LOWER) {
1366                        pHTInfo->bCurBW40MHz = true;
1367                        pHTInfo->CurSTAExtChnlOffset = Offset;
1368                } else {
1369                        pHTInfo->bCurBW40MHz = false;
1370                        pHTInfo->CurSTAExtChnlOffset = HT_EXTCHNL_OFFSET_NO_EXT;
1371                }
1372        } else {
1373                pHTInfo->bCurBW40MHz = false;
1374                pHTInfo->CurSTAExtChnlOffset = HT_EXTCHNL_OFFSET_NO_EXT;
1375        }
1376
1377        pHTInfo->bSwBwInProgress = true;
1378
1379        // TODO: 2007.7.13 by Emily Wait 2000ms  in order to guarantee that switching
1380        //   bandwidth is executed after scan is finished. It is a temporal solution
1381        //   because software should ganrantee the last operation of switching bandwidth
1382        //   is executed properlly.
1383        HTSetConnectBwModeCallback(ieee);
1384
1385//      spin_unlock_irqrestore(&(ieee->bw_spinlock), flags);
1386}
1387
1388void HTSetConnectBwModeCallback(struct ieee80211_device *ieee)
1389{
1390        PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
1391
1392        IEEE80211_DEBUG(IEEE80211_DL_HT, "======>%s()\n", __func__);
1393
1394        if(pHTInfo->bCurBW40MHz)
1395        {
1396                if(pHTInfo->CurSTAExtChnlOffset==HT_EXTCHNL_OFFSET_UPPER)
1397                        ieee->set_chan(ieee->dev, ieee->current_network.channel+2);
1398                else if(pHTInfo->CurSTAExtChnlOffset==HT_EXTCHNL_OFFSET_LOWER)
1399                        ieee->set_chan(ieee->dev, ieee->current_network.channel-2);
1400                else
1401                        ieee->set_chan(ieee->dev, ieee->current_network.channel);
1402
1403                ieee->SetBWModeHandler(ieee->dev, HT_CHANNEL_WIDTH_20_40, pHTInfo->CurSTAExtChnlOffset);
1404        } else {
1405                ieee->set_chan(ieee->dev, ieee->current_network.channel);
1406                ieee->SetBWModeHandler(ieee->dev, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
1407        }
1408
1409        pHTInfo->bSwBwInProgress = false;
1410}
1411
Hosted by Missing Link Electronics. The original LXR software by the LXR community, this experimental version by lxr@linux.no.