drivers/staging/rtl8192u/ieee80211/rtl819x_HTProc.c

   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"
   6 u8 MCS_FILTER_ALL[16] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
   7
   8 u8 MCS_FILTER_1SS[16] = {0xff, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
   9
  10 u16 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
  33 static u8 UNKNOWN_BORADCOM[3] = {0x00, 0x14, 0xbf};
  34 static u8 LINKSYSWRT330_LINKSYSWRT300_BROADCOM[3] = {0x00, 0x1a, 0x70};
  35 static u8 LINKSYSWRT350_LINKSYSWRT150_BROADCOM[3] = {0x00, 0x1d, 0x7e};
  36 static u8 NETGEAR834Bv2_BROADCOM[3] = {0x00, 0x1b, 0x2f};
  37 static u8 BELKINF5D8233V1_RALINK[3] = {0x00, 0x17, 0x3f};       //cosa 03202008
  38 static u8 BELKINF5D82334V3_RALINK[3] = {0x00, 0x1c, 0xdf};
  39 static u8 PCI_RALINK[3] = {0x00, 0x90, 0xcc};
  40 static u8 EDIMAX_RALINK[3] = {0x00, 0x0e, 0x2e};
  41 static u8 AIRLINK_RALINK[3] = {0x00, 0x18, 0x02};
  42 //static u8 DLINK_ATHEROS[3] = {0x00, 0x1c, 0xf0};
  43 static 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  * *****************************************************************************************************************/
  55 void 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  * *****************************************************************************************************************/
 125 void 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  * *****************************************************************************************************************/
 162 void 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 */
 223 static 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
 242 static 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
 269 u16 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
 282 u16 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  * *****************************************************************************************************************/
 301 u16  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
 348 bool 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  * *****************************************************************************************************************/
 380 static 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   * *****************************************************************************************************************/
 417 static 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 */
 435 static 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 */
 472 static 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   * *****************************************************************************************************************/
 488 static 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   * *****************************************************************************************************************/
 500 static 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
 515 static 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
 528 void 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   * *****************************************************************************************************************/
 547 void 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   * *****************************************************************************************************************/
 665 void 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   * *****************************************************************************************************************/
 737 void 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   * *****************************************************************************************************************/
 791 static 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   * *****************************************************************************************************************/
 854 u8 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 */
 906 static 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 }
 937 void HTSetConnectBwMode(struct ieee80211_device *ieee, HT_CHANNEL_WIDTH Bandwidth, HT_EXTCHNL_OFFSET    Offset);
 938 void 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
1113 void 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?
1122 void 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 ********************************************************************************************************************/
1190 void 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 ********************************************************************************************************************/
1212 void 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
1295 void 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 }
1314 EXPORT_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 ********************************************************************************************************************/
1324 u8 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 //
1339 void 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
1388 void 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 }