drivers/staging/rtl8192u/ieee80211/rtl819x_HTProc.c

   1 // SPDX-License-Identifier: GPL-2.0
   2
   3 /*
   4  * As this function is mainly ported from Windows driver, so leave the name
   5  * little changed. If any confusion caused, tell me. Created by WB. 2008.05.08
   6  */
   7 #include "ieee80211.h"
   8
   9 u8 MCS_FILTER_ALL[16] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
  10
  11 u8 MCS_FILTER_1SS[16] = {0xff, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
  12
  13 u16 MCS_DATA_RATE[2][2][77] = {
  14         {       {13, 26, 39, 52, 78, 104, 117, 130, 26, 52, 78, 104, 156, 208, 234, 260,
  15                  39, 78, 117, 234, 312, 351, 390, 52, 104, 156, 208, 312, 416, 468, 520,
  16                  0, 78, 104, 130, 117, 156, 195, 104, 130, 130, 156, 182, 182, 208, 156, 195,
  17                  195, 234, 273, 273, 312, 130, 156, 181, 156, 181, 208, 234, 208, 234, 260, 260,
  18                  286, 195, 234, 273, 234, 273, 312, 351, 312, 351, 390, 390, 429},                      // Long GI, 20MHz
  19                 {14, 29, 43, 58, 87, 116, 130, 144, 29, 58, 87, 116, 173, 231, 260, 289,
  20                  43, 87, 130, 173, 260, 347, 390, 433, 58, 116, 173, 231, 347, 462, 520, 578,
  21                  0, 87, 116, 144, 130, 173, 217, 116, 144, 144, 173, 202, 202, 231, 173, 217,
  22                  217, 260, 303, 303, 347, 144, 173, 202, 173, 202, 231, 260, 231, 260, 289, 289,
  23                  318, 217, 260, 303, 260, 303, 347, 390, 347, 390, 433, 433, 477}       },              // Short GI, 20MHz
  24         {       {27, 54, 81, 108, 162, 216, 243, 270, 54, 108, 162, 216, 324, 432, 486, 540,
  25                  81, 162, 243, 324, 486, 648, 729, 810, 108, 216, 324, 432, 648, 864, 972, 1080,
  26                  12, 162, 216, 270, 243, 324, 405, 216, 270, 270, 324, 378, 378, 432, 324, 405,
  27                  405, 486, 567, 567, 648, 270, 324, 378, 324, 378, 432, 486, 432, 486, 540, 540,
  28                  594, 405, 486, 567, 486, 567, 648, 729, 648, 729, 810, 810, 891},      // Long GI, 40MHz
  29                 {30, 60, 90, 120, 180, 240, 270, 300, 60, 120, 180, 240, 360, 480, 540, 600,
  30                  90, 180, 270, 360, 540, 720, 810, 900, 120, 240, 360, 480, 720, 960, 1080, 1200,
  31                  13, 180, 240, 300, 270, 360, 450, 240, 300, 300, 360, 420, 420, 480, 360, 450,
  32                  450, 540, 630, 630, 720, 300, 360, 420, 360, 420, 480, 540, 480, 540, 600, 600,
  33                  660, 450, 540, 630, 540, 630, 720, 810, 720, 810, 900, 900, 990}       }       // Short GI, 40MHz
  34 };
  35
  36 static u8 UNKNOWN_BORADCOM[3] = {0x00, 0x14, 0xbf};
  37 static u8 LINKSYSWRT330_LINKSYSWRT300_BROADCOM[3] = {0x00, 0x1a, 0x70};
  38 static u8 LINKSYSWRT350_LINKSYSWRT150_BROADCOM[3] = {0x00, 0x1d, 0x7e};
  39 static u8 NETGEAR834Bv2_BROADCOM[3] = {0x00, 0x1b, 0x2f};
  40 static u8 BELKINF5D8233V1_RALINK[3] = {0x00, 0x17, 0x3f};       //cosa 03202008
  41 static u8 BELKINF5D82334V3_RALINK[3] = {0x00, 0x1c, 0xdf};
  42 static u8 PCI_RALINK[3] = {0x00, 0x90, 0xcc};
  43 static u8 EDIMAX_RALINK[3] = {0x00, 0x0e, 0x2e};
  44 static u8 AIRLINK_RALINK[3] = {0x00, 0x18, 0x02};
  45 //static u8 DLINK_ATHEROS[3] = {0x00, 0x1c, 0xf0};
  46 static u8 CISCO_BROADCOM[3] = {0x00, 0x17, 0x94};
  47 /*
  48  * 2008/04/01 MH For Cisco G mode RX TP We need to change FW duration. Should we
  49  * put the code in other place??
  50  * static u8 WIFI_CISCO_G_AP[3] = {0x00, 0x40, 0x96};
  51  */
  52 /*
  53  *function:  This function update default settings in pHTInfo structure
  54  *   input:  PRT_HIGH_THROUGHPUT        pHTInfo
  55  *  output:  none
  56  *  return:  none
  57  *  notice:  These value need be modified if any changes.
  58  */
  59 void HTUpdateDefaultSetting(struct ieee80211_device *ieee)
  60 {
  61         PRT_HIGH_THROUGHPUT     pHTInfo = ieee->pHTInfo;
  62         //const typeof( ((struct ieee80211_device *)0)->pHTInfo ) *__mptr = &pHTInfo;
  63
  64         //printk("pHTinfo:%p, &pHTinfo:%p, mptr:%p,  offsetof:%x\n", pHTInfo, &pHTInfo, __mptr, offsetof(struct ieee80211_device, pHTInfo));
  65         //printk("===>ieee:%p,\n", ieee);
  66         // ShortGI support
  67         pHTInfo->bRegShortGI20MHz = 1;
  68         pHTInfo->bRegShortGI40MHz = 1;
  69
  70         // 40MHz channel support
  71         pHTInfo->bRegBW40MHz = 1;
  72
  73         // CCK rate support in 40MHz channel
  74         if (pHTInfo->bRegBW40MHz)
  75                 pHTInfo->bRegSuppCCK = 1;
  76         else
  77                 pHTInfo->bRegSuppCCK = true;
  78
  79         // AMSDU related
  80         pHTInfo->nAMSDU_MaxSize = 7935UL;
  81         pHTInfo->bAMSDU_Support = 0;
  82
  83         // AMPDU related
  84         pHTInfo->bAMPDUEnable = 1;
  85         pHTInfo->AMPDU_Factor = 2; //// 0: 2n13(8K), 1:2n14(16K), 2:2n15(32K), 3:2n16(64k)
  86         pHTInfo->MPDU_Density = 0;// 0: No restriction, 1: 1/8usec, 2: 1/4usec, 3: 1/2usec, 4: 1usec, 5: 2usec, 6: 4usec, 7:8usec
  87
  88         // MIMO Power Save
  89         pHTInfo->SelfMimoPs = 3;// 0: Static Mimo Ps, 1: Dynamic Mimo Ps, 3: No Limitation, 2: Reserved(Set to 3 automatically.)
  90         if (pHTInfo->SelfMimoPs == 2)
  91                 pHTInfo->SelfMimoPs = 3;
  92         // 8190 only. Assign rate operation mode to firmware
  93         ieee->bTxDisableRateFallBack = 0;
  94         ieee->bTxUseDriverAssingedRate = 0;
  95
  96 #ifdef  TO_DO_LIST
  97         // 8190 only. Assign duration operation mode to firmware
  98         pMgntInfo->bTxEnableFwCalcDur = (BOOLEAN)pNdisCommon->bRegTxEnableFwCalcDur;
  99 #endif
 100         /*
 101          * 8190 only, Realtek proprietary aggregation mode
 102          * Set MPDUDensity=2,   1: Set MPDUDensity=2(32k)  for Realtek AP and set MPDUDensity=0(8k) for others
 103          */
 104         pHTInfo->bRegRT2RTAggregation = 1;//0: Set MPDUDensity=2,   1: Set MPDUDensity=2(32k)  for Realtek AP and set MPDUDensity=0(8k) for others
 105
 106         // For Rx Reorder Control
 107         pHTInfo->bRegRxReorderEnable = 1;
 108         pHTInfo->RxReorderWinSize = 64;
 109         pHTInfo->RxReorderPendingTime = 30;
 110
 111 #ifdef USB_TX_DRIVER_AGGREGATION_ENABLE
 112         pHTInfo->UsbTxAggrNum = 4;
 113 #endif
 114 #ifdef USB_RX_AGGREGATION_SUPPORT
 115         pHTInfo->UsbRxFwAggrEn = 1;
 116         pHTInfo->UsbRxFwAggrPageNum = 24;
 117         pHTInfo->UsbRxFwAggrPacketNum = 8;
 118         pHTInfo->UsbRxFwAggrTimeout = 16; ////usb rx FW aggregation timeout threshold.It's in units of 64us
 119 #endif
 120 }
 121
 122 /*
 123  *function:  This function print out each field on HT capability
 124  *           IE mainly from (Beacon/ProbeRsp/AssocReq)
 125  *   input:  u8*        CapIE       //Capability IE to be printed out
 126  *           u8*        TitleString //mainly print out caller function
 127  *  output:  none
 128  *  return:  none
 129  *  notice:  Driver should not print out this message by default.
 130  */
 131 void HTDebugHTCapability(u8 *CapIE, u8 *TitleString)
 132 {
 133         static u8       EWC11NHTCap[] = {0x00, 0x90, 0x4c, 0x33};       // For 11n EWC definition, 2007.07.17, by Emily
 134         PHT_CAPABILITY_ELE              pCapELE;
 135
 136         if (!memcmp(CapIE, EWC11NHTCap, sizeof(EWC11NHTCap))) {
 137                 //EWC IE
 138                 IEEE80211_DEBUG(IEEE80211_DL_HT, "EWC IE in %s()\n", __func__);
 139                 pCapELE = (PHT_CAPABILITY_ELE)(&CapIE[4]);
 140         } else {
 141                 pCapELE = (PHT_CAPABILITY_ELE)(&CapIE[0]);
 142         }
 143         IEEE80211_DEBUG(IEEE80211_DL_HT, "<Log HT Capability>. Called by %s\n", TitleString);
 144
 145         IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tSupported Channel Width = %s\n", (pCapELE->ChlWidth) ? "20MHz" : "20/40MHz");
 146         IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tSupport Short GI for 20M = %s\n", (pCapELE->ShortGI20Mhz) ? "YES" : "NO");
 147         IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tSupport Short GI for 40M = %s\n", (pCapELE->ShortGI40Mhz) ? "YES" : "NO");
 148         IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tSupport TX STBC = %s\n", (pCapELE->TxSTBC) ? "YES" : "NO");
 149         IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tMax AMSDU Size = %s\n", (pCapELE->MaxAMSDUSize) ? "3839" : "7935");
 150         IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tSupport CCK in 20/40 mode = %s\n", (pCapELE->DssCCk) ? "YES" : "NO");
 151         IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tMax AMPDU Factor = %d\n", pCapELE->MaxRxAMPDUFactor);
 152         IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tMPDU Density = %d\n", pCapELE->MPDUDensity);
 153         IEEE80211_DEBUG(IEEE80211_DL_HT,  "\tMCS Rate Set = [%x][%x][%x][%x][%x]\n", pCapELE->MCS[0],\
 154                                 pCapELE->MCS[1], pCapELE->MCS[2], pCapELE->MCS[3], pCapELE->MCS[4]);
 155 }
 156
 157 /*
 158  *function:  This function print out each field on HT Information
 159  *           IE mainly from (Beacon/ProbeRsp)
 160  *   input:  u8*        InfoIE       //Capability IE to be printed out
 161  *           u8*        TitleString //mainly print out caller function
 162  *  output:  none
 163  *  return:  none
 164  *  notice:  Driver should not print out this message by default.
 165  */
 166 void HTDebugHTInfo(u8 *InfoIE, u8 *TitleString)
 167 {
 168         static u8       EWC11NHTInfo[] = {0x00, 0x90, 0x4c, 0x34};      // For 11n EWC definition, 2007.07.17, by Emily
 169         PHT_INFORMATION_ELE             pHTInfoEle;
 170
 171         if (!memcmp(InfoIE, EWC11NHTInfo, sizeof(EWC11NHTInfo))) {
 172                 // Not EWC IE
 173                 IEEE80211_DEBUG(IEEE80211_DL_HT, "EWC IE in %s()\n", __func__);
 174                 pHTInfoEle = (PHT_INFORMATION_ELE)(&InfoIE[4]);
 175         } else {
 176                 pHTInfoEle = (PHT_INFORMATION_ELE)(&InfoIE[0]);
 177         }
 178
 179         IEEE80211_DEBUG(IEEE80211_DL_HT, "<Log HT Information Element>. Called by %s\n", TitleString);
 180
 181         IEEE80211_DEBUG(IEEE80211_DL_HT, "\tPrimary channel = %d\n", pHTInfoEle->ControlChl);
 182         IEEE80211_DEBUG(IEEE80211_DL_HT, "\tSecondary channel =");
 183         switch (pHTInfoEle->ExtChlOffset) {
 184         case 0:
 185                 IEEE80211_DEBUG(IEEE80211_DL_HT, "Not Present\n");
 186                 break;
 187         case 1:
 188                 IEEE80211_DEBUG(IEEE80211_DL_HT, "Upper channel\n");
 189                 break;
 190         case 2:
 191                 IEEE80211_DEBUG(IEEE80211_DL_HT, "Reserved. Eooro!!!\n");
 192                 break;
 193         case 3:
 194                 IEEE80211_DEBUG(IEEE80211_DL_HT, "Lower Channel\n");
 195                 break;
 196         }
 197         IEEE80211_DEBUG(IEEE80211_DL_HT, "\tRecommended channel width = %s\n", (pHTInfoEle->RecommemdedTxWidth) ? "20Mhz" : "40Mhz");
 198
 199         IEEE80211_DEBUG(IEEE80211_DL_HT, "\tOperation mode for protection = ");
 200         switch (pHTInfoEle->OptMode) {
 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 }
 218
 219 /*
 220  *      Return:         true if station in half n mode and AP supports 40 bw
 221  */
 222 static bool IsHTHalfNmode40Bandwidth(struct ieee80211_device *ieee)
 223 {
 224         bool                    retValue = false;
 225         PRT_HIGH_THROUGHPUT      pHTInfo = ieee->pHTInfo;
 226
 227         if (!pHTInfo->bCurrentHTSupport)                // wireless is n mode
 228                 retValue = false;
 229         else if (!pHTInfo->bRegBW40MHz)         // station supports 40 bw
 230                 retValue = false;
 231         else if (!ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev))     // station in half n mode
 232                 retValue = false;
 233         else if (((PHT_CAPABILITY_ELE)(pHTInfo->PeerHTCapBuf))->ChlWidth) // ap support 40 bw
 234                 retValue = true;
 235         else
 236                 retValue = false;
 237
 238         return retValue;
 239 }
 240
 241 static bool IsHTHalfNmodeSGI(struct ieee80211_device *ieee, bool is40MHz)
 242 {
 243         bool                    retValue = false;
 244         PRT_HIGH_THROUGHPUT      pHTInfo = ieee->pHTInfo;
 245
 246         if (!pHTInfo->bCurrentHTSupport)                // wireless is n mode
 247                 retValue = false;
 248         else if (!ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev))     // station in half n mode
 249                 retValue = false;
 250         else if (is40MHz) { // ap support 40 bw
 251                 if (((PHT_CAPABILITY_ELE)(pHTInfo->PeerHTCapBuf))->ShortGI40Mhz) // ap support 40 bw short GI
 252                         retValue = true;
 253                 else
 254                         retValue = false;
 255         } else {
 256                 if (((PHT_CAPABILITY_ELE)(pHTInfo->PeerHTCapBuf))->ShortGI20Mhz) // ap support 40 bw short GI
 257                         retValue = true;
 258                 else
 259                         retValue = false;
 260         }
 261
 262         return retValue;
 263 }
 264
 265 u16 HTHalfMcsToDataRate(struct ieee80211_device *ieee,  u8      nMcsRate)
 266 {
 267         u8      is40MHz;
 268         u8      isShortGI;
 269
 270         is40MHz = (IsHTHalfNmode40Bandwidth(ieee)) ? 1 : 0;
 271         isShortGI = (IsHTHalfNmodeSGI(ieee, is40MHz)) ? 1 : 0;
 272
 273         return MCS_DATA_RATE[is40MHz][isShortGI][(nMcsRate & 0x7f)];
 274 }
 275
 276 u16 HTMcsToDataRate(struct ieee80211_device *ieee, u8 nMcsRate)
 277 {
 278         PRT_HIGH_THROUGHPUT     pHTInfo = ieee->pHTInfo;
 279
 280         u8      is40MHz = (pHTInfo->bCurBW40MHz) ? 1 : 0;
 281         u8      isShortGI = (pHTInfo->bCurBW40MHz) ?
 282                                                 ((pHTInfo->bCurShortGI40MHz) ? 1 : 0) :
 283                                                 ((pHTInfo->bCurShortGI20MHz) ? 1 : 0);
 284         return MCS_DATA_RATE[is40MHz][isShortGI][(nMcsRate & 0x7f)];
 285 }
 286
 287 /*
 288  *function:  This function returns current datarate.
 289  *   input:  struct ieee80211_device*   ieee
 290  *           u8                         nDataRate
 291  *  output:  none
 292  *  return:  tx rate
 293  *  notice:  quite unsure about how to use this function //wb
 294  */
 295 u16  TxCountToDataRate(struct ieee80211_device *ieee, u8 nDataRate)
 296 {
 297         //PRT_HIGH_THROUGHPUT   pHTInfo = ieee->pHTInfo;
 298         u16             CCKOFDMRate[12] = {0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c};
 299         u8      is40MHz = 0;
 300         u8      isShortGI = 0;
 301
 302         if (nDataRate < 12) {
 303                 return CCKOFDMRate[nDataRate];
 304         } else {
 305                 if (nDataRate >= 0x10 && nDataRate <= 0x1f) { //if(nDataRate > 11 && nDataRate < 28 )
 306                         is40MHz = 0;
 307                         isShortGI = 0;
 308
 309                       // nDataRate = nDataRate - 12;
 310                 } else if (nDataRate >= 0x20  && nDataRate <= 0x2f) { //(27, 44)
 311                         is40MHz = 1;
 312                         isShortGI = 0;
 313
 314                         //nDataRate = nDataRate - 28;
 315                 } else if (nDataRate >= 0x30  && nDataRate <= 0x3f) { //(43, 60)
 316                         is40MHz = 0;
 317                         isShortGI = 1;
 318
 319                         //nDataRate = nDataRate - 44;
 320                 } else if (nDataRate >= 0x40  && nDataRate <= 0x4f) { //(59, 76)
 321                         is40MHz = 1;
 322                         isShortGI = 1;
 323
 324                         //nDataRate = nDataRate - 60;
 325                 }
 326                 return MCS_DATA_RATE[is40MHz][isShortGI][nDataRate & 0xf];
 327         }
 328 }
 329
 330 bool IsHTHalfNmodeAPs(struct ieee80211_device *ieee)
 331 {
 332         bool                    retValue = false;
 333         struct ieee80211_network *net = &ieee->current_network;
 334
 335         if ((memcmp(net->bssid, BELKINF5D8233V1_RALINK, 3) == 0) ||
 336             (memcmp(net->bssid, BELKINF5D82334V3_RALINK, 3) == 0) ||
 337             (memcmp(net->bssid, PCI_RALINK, 3) == 0) ||
 338             (memcmp(net->bssid, EDIMAX_RALINK, 3) == 0) ||
 339             (memcmp(net->bssid, AIRLINK_RALINK, 3) == 0) ||
 340             (net->ralink_cap_exist))
 341                 retValue = true;
 342         else if ((memcmp(net->bssid, UNKNOWN_BORADCOM, 3) == 0) ||
 343                  (memcmp(net->bssid, LINKSYSWRT330_LINKSYSWRT300_BROADCOM, 3) == 0) ||
 344                  (memcmp(net->bssid, LINKSYSWRT350_LINKSYSWRT150_BROADCOM, 3) == 0) ||
 345                  (memcmp(net->bssid, NETGEAR834Bv2_BROADCOM, 3) == 0) ||
 346                  (net->broadcom_cap_exist))
 347                 retValue = true;
 348         else if (net->bssht.bdRT2RTAggregation)
 349                 retValue = true;
 350         else
 351                 retValue = false;
 352
 353         return retValue;
 354 }
 355
 356 /*
 357  *function:  This function returns peer IOT.
 358  *   input:  struct ieee80211_device*   ieee
 359  *  output:  none
 360  *  return:
 361  *  notice:
 362  */
 363 static void HTIOTPeerDetermine(struct ieee80211_device *ieee)
 364 {
 365         PRT_HIGH_THROUGHPUT     pHTInfo = ieee->pHTInfo;
 366         struct ieee80211_network *net = &ieee->current_network;
 367
 368         if (net->bssht.bdRT2RTAggregation)
 369                 pHTInfo->IOTPeer = HT_IOT_PEER_REALTEK;
 370         else if (net->broadcom_cap_exist)
 371                 pHTInfo->IOTPeer = HT_IOT_PEER_BROADCOM;
 372         else if ((memcmp(net->bssid, UNKNOWN_BORADCOM, 3) == 0) ||
 373                  (memcmp(net->bssid, LINKSYSWRT330_LINKSYSWRT300_BROADCOM, 3) == 0) ||
 374                  (memcmp(net->bssid, LINKSYSWRT350_LINKSYSWRT150_BROADCOM, 3) == 0) ||
 375                  (memcmp(net->bssid, NETGEAR834Bv2_BROADCOM, 3) == 0))
 376                 pHTInfo->IOTPeer = HT_IOT_PEER_BROADCOM;
 377         else if ((memcmp(net->bssid, BELKINF5D8233V1_RALINK, 3) == 0) ||
 378                  (memcmp(net->bssid, BELKINF5D82334V3_RALINK, 3) == 0) ||
 379                  (memcmp(net->bssid, PCI_RALINK, 3) == 0) ||
 380                  (memcmp(net->bssid, EDIMAX_RALINK, 3) == 0) ||
 381                  (memcmp(net->bssid, AIRLINK_RALINK, 3) == 0) ||
 382                  net->ralink_cap_exist)
 383                 pHTInfo->IOTPeer = HT_IOT_PEER_RALINK;
 384         else if (net->atheros_cap_exist)
 385                 pHTInfo->IOTPeer = HT_IOT_PEER_ATHEROS;
 386         else if (memcmp(net->bssid, CISCO_BROADCOM, 3) == 0)
 387                 pHTInfo->IOTPeer = HT_IOT_PEER_CISCO;
 388         else
 389                 pHTInfo->IOTPeer = HT_IOT_PEER_UNKNOWN;
 390
 391         IEEE80211_DEBUG(IEEE80211_DL_IOT, "Joseph debug!! IOTPEER: %x\n", pHTInfo->IOTPeer);
 392 }
 393
 394 /*
 395  *function:  Check whether driver should declare received rate up to MCS13
 396  *           only since some chipset is not good at receiving MCS14~15 frame
 397  *           from some AP.
 398  *   input:  struct ieee80211_device*   ieee
 399  *           u8 *                       PeerMacAddr
 400  *  output:  none
 401  *  return:  return 1 if driver should declare MCS13 only(otherwise return 0)
 402  */
 403 static u8 HTIOTActIsDisableMCS14(struct ieee80211_device *ieee, u8 *PeerMacAddr)
 404 {
 405         return 0;
 406 }
 407
 408 /*
 409  * Function:    HTIOTActIsDisableMCS15
 410  *
 411  * Overview:    Check whether driver should declare capability of receiving
 412  *              MCS15
 413  *
 414  * Input:
 415  *                      PADAPTER                Adapter,
 416  *
 417  * Output:              None
 418  * Return:      true if driver should disable MCS15
 419  * 2008.04.15   Emily
 420  */
 421 static bool HTIOTActIsDisableMCS15(struct ieee80211_device *ieee)
 422 {
 423         bool retValue = false;
 424
 425 #ifdef TODO
 426         // Apply for 819u only
 427 #if (HAL_CODE_BASE == RTL8192)
 428
 429 #if (DEV_BUS_TYPE == USB_INTERFACE)
 430         // Alway disable MCS15 by Jerry Chang's request.by Emily, 2008.04.15
 431         retValue = true;
 432 #elif (DEV_BUS_TYPE == PCI_INTERFACE)
 433         // Enable MCS15 if the peer is Cisco AP. by Emily, 2008.05.12
 434 //      if(pBssDesc->bCiscoCapExist)
 435 //              retValue = false;
 436 //      else
 437                 retValue = false;
 438 #endif
 439 #endif
 440 #endif
 441         // Jerry Chang suggest that 8190 1x2 does not need to disable MCS15
 442
 443         return retValue;
 444 }
 445
 446 /*
 447  * Function:    HTIOTActIsDisableMCSTwoSpatialStream
 448  *
 449  * Overview:    Check whether driver should declare capability of receiving
 450  *              All 2 ss packets
 451  *
 452  * Input:
 453  *                      PADAPTER                Adapter,
 454  *
 455  * Output:              None
 456  * Return:      true if driver should disable all two spatial stream packet
 457  * 2008.04.21   Emily
 458  */
 459 static bool HTIOTActIsDisableMCSTwoSpatialStream(struct ieee80211_device *ieee,
 460                                                  u8 *PeerMacAddr)
 461 {
 462 #ifdef TODO
 463         // Apply for 819u only
 464 #endif
 465         return false;
 466 }
 467
 468 /*
 469  *function:  Check whether driver should disable EDCA turbo mode
 470  *   input:  struct ieee80211_device*   ieee
 471  *           u8*                        PeerMacAddr
 472  *  output:  none
 473  *  return:  return 1 if driver should disable EDCA turbo mode
 474  *           (otherwise return 0)
 475  */
 476 static u8 HTIOTActIsDisableEDCATurbo(struct ieee80211_device *ieee,
 477                                      u8 *PeerMacAddr)
 478 {       /* default enable EDCA Turbo mode. */
 479         return false;
 480 }
 481
 482 /*
 483  *function:  Check whether we need to use OFDM to sned MGNT frame for
 484  *           broadcom AP
 485  *   input:  struct ieee80211_network *network   //current network we live
 486  *  output:  none
 487  *  return:  return 1 if true
 488  */
 489 static u8 HTIOTActIsMgntUseCCK6M(struct ieee80211_network *network)
 490 {
 491         u8      retValue = 0;
 492
 493         // 2008/01/25 MH Judeg if we need to use OFDM to sned MGNT frame for broadcom AP.
 494         // 2008/01/28 MH We must prevent that we select null bssid to link.
 495
 496         if (network->broadcom_cap_exist)
 497                 retValue = 1;
 498
 499         return retValue;
 500 }
 501
 502 static u8 HTIOTActIsCCDFsync(u8 *PeerMacAddr)
 503 {
 504         u8      retValue = 0;
 505
 506         if ((memcmp(PeerMacAddr, UNKNOWN_BORADCOM, 3) == 0) ||
 507             (memcmp(PeerMacAddr, LINKSYSWRT330_LINKSYSWRT300_BROADCOM, 3) == 0) ||
 508             (memcmp(PeerMacAddr, LINKSYSWRT350_LINKSYSWRT150_BROADCOM, 3) == 0))
 509                 retValue = 1;
 510
 511         return retValue;
 512 }
 513
 514 void HTResetIOTSetting(PRT_HIGH_THROUGHPUT pHTInfo)
 515 {
 516         pHTInfo->IOTAction = 0;
 517         pHTInfo->IOTPeer = HT_IOT_PEER_UNKNOWN;
 518 }
 519
 520 /*
 521  *function:  Construct Capablility Element in Beacon... if HTEnable is turned on
 522  *   input:  struct ieee80211_device*   ieee
 523  *           u8*                     posHTCap //pointer to store Capability Ele
 524  *           u8*                     len //store length of CE
 525  *           u8                      IsEncrypt //whether encrypt, needed further
 526  *  output:  none
 527  *  return:  none
 528  *  notice:  posHTCap can't be null and should be initialized before.
 529  */
 530 void HTConstructCapabilityElement(struct ieee80211_device *ieee, u8 *posHTCap, u8 *len, u8 IsEncrypt)
 531 {
 532         PRT_HIGH_THROUGHPUT     pHT = ieee->pHTInfo;
 533         PHT_CAPABILITY_ELE      pCapELE = NULL;
 534         //u8 bIsDeclareMCS13;
 535
 536         if (!posHTCap || !pHT) {
 537                 IEEE80211_DEBUG(IEEE80211_DL_ERR,
 538                                 "posHTCap or pHTInfo can't be null in %s\n",
 539                                 __func__);
 540                 return;
 541         }
 542         memset(posHTCap, 0, *len);
 543         if (pHT->ePeerHTSpecVer == HT_SPEC_VER_EWC) {
 544                 u8      EWC11NHTCap[] = {0x00, 0x90, 0x4c, 0x33};       // For 11n EWC definition, 2007.07.17, by Emily
 545
 546                 memcpy(posHTCap, EWC11NHTCap, sizeof(EWC11NHTCap));
 547                 pCapELE = (PHT_CAPABILITY_ELE)&posHTCap[4];
 548         } else {
 549                 pCapELE = (PHT_CAPABILITY_ELE)posHTCap;
 550         }
 551
 552         //HT capability info
 553         pCapELE->AdvCoding              = 0; // This feature is not supported now!!
 554         if (ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev))
 555                 pCapELE->ChlWidth = 0;
 556         else
 557                 pCapELE->ChlWidth = (pHT->bRegBW40MHz ? 1 : 0);
 558
 559 //      pCapELE->ChlWidth               = (pHT->bRegBW40MHz?1:0);
 560         pCapELE->MimoPwrSave            = pHT->SelfMimoPs;
 561         pCapELE->GreenField             = 0; // This feature is not supported now!!
 562         pCapELE->ShortGI20Mhz           = 1; // We can receive Short GI!!
 563         pCapELE->ShortGI40Mhz           = 1; // We can receive Short GI!!
 564         //DbgPrint("TX HT cap/info ele BW=%d SG20=%d SG40=%d\n\r",
 565         //pCapELE->ChlWidth, pCapELE->ShortGI20Mhz, pCapELE->ShortGI40Mhz);
 566         pCapELE->TxSTBC                 = 1;
 567         pCapELE->RxSTBC                 = 0;
 568         pCapELE->DelayBA                = 0;    // Do not support now!!
 569         pCapELE->MaxAMSDUSize           = (MAX_RECEIVE_BUFFER_SIZE >= 7935) ? 1 : 0;
 570         pCapELE->DssCCk                 = ((pHT->bRegBW40MHz) ? (pHT->bRegSuppCCK ? 1 : 0) : 0);
 571         pCapELE->PSMP                   = 0; // Do not support now!!
 572         pCapELE->LSigTxopProtect        = 0; // Do not support now!!
 573
 574         /*
 575          * MAC HT parameters info
 576          * TODO: Nedd to take care of this part
 577          */
 578         IEEE80211_DEBUG(IEEE80211_DL_HT, "TX HT cap/info ele BW=%d MaxAMSDUSize:%d DssCCk:%d\n", pCapELE->ChlWidth, pCapELE->MaxAMSDUSize, pCapELE->DssCCk);
 579
 580         if (IsEncrypt) {
 581                 pCapELE->MPDUDensity    = 7; // 8us
 582                 pCapELE->MaxRxAMPDUFactor = 2; // 2 is for 32 K and 3 is 64K
 583         } else {
 584                 pCapELE->MaxRxAMPDUFactor = 3; // 2 is for 32 K and 3 is 64K
 585                 pCapELE->MPDUDensity    = 0; // no density
 586         }
 587
 588         //Supported MCS set
 589         memcpy(pCapELE->MCS, ieee->Regdot11HTOperationalRateSet, 16);
 590         if (pHT->IOTAction & HT_IOT_ACT_DISABLE_MCS15)
 591                 pCapELE->MCS[1] &= 0x7f;
 592
 593         if (pHT->IOTAction & HT_IOT_ACT_DISABLE_MCS14)
 594                 pCapELE->MCS[1] &= 0xbf;
 595
 596         if (pHT->IOTAction & HT_IOT_ACT_DISABLE_ALL_2SS)
 597                 pCapELE->MCS[1] &= 0x00;
 598
 599         /*
 600          * 2008.06.12
 601          * For RTL819X, if pairwisekey = wep/tkip, ap is ralink, we support only MCS0~7.
 602          */
 603         if (ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev)) {
 604                 int i;
 605
 606                 for (i = 1; i < 16; i++)
 607                         pCapELE->MCS[i] = 0;
 608         }
 609
 610         //Extended HT Capability Info
 611         memset(&pCapELE->ExtHTCapInfo, 0, 2);
 612
 613         //TXBF Capabilities
 614         memset(pCapELE->TxBFCap, 0, 4);
 615
 616         //Antenna Selection Capabilities
 617         pCapELE->ASCap = 0;
 618 //add 2 to give space for element ID and len when construct frames
 619         if (pHT->ePeerHTSpecVer == HT_SPEC_VER_EWC)
 620                 *len = 30 + 2;
 621         else
 622                 *len = 26 + 2;
 623
 624 //      IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA | IEEE80211_DL_HT, posHTCap, *len -2);
 625
 626         /*
 627          * Print each field in detail. Driver should not print out this message
 628          * by default
 629          */
 630 //      HTDebugHTCapability(posHTCap, (u8*)"HTConstructCapability()");
 631 }
 632
 633 /*
 634  *function:  Construct Information Element in Beacon... if HTEnable is turned on
 635  *   input:  struct ieee80211_device*   ieee
 636  *           u8*                     posHTCap //pointer to store Information Ele
 637  *           u8*                     len   //store len of
 638  *           u8                      IsEncrypt //whether encrypt, needed further
 639  *  output:  none
 640  *  return:  none
 641  *  notice:  posHTCap can't be null and be initialized before.
 642  *           Only AP and IBSS sta should do this
 643  */
 644 void HTConstructInfoElement(struct ieee80211_device *ieee, u8 *posHTInfo, u8 *len, u8 IsEncrypt)
 645 {
 646         PRT_HIGH_THROUGHPUT     pHT = ieee->pHTInfo;
 647         PHT_INFORMATION_ELE             pHTInfoEle = (PHT_INFORMATION_ELE)posHTInfo;
 648
 649         if (!posHTInfo || !pHTInfoEle) {
 650                 IEEE80211_DEBUG(IEEE80211_DL_ERR,
 651                                 "posHTInfo or pHTInfoEle can't be null in %s\n",
 652                                 __func__);
 653                 return;
 654         }
 655
 656         memset(posHTInfo, 0, *len);
 657         if ((ieee->iw_mode == IW_MODE_ADHOC) || (ieee->iw_mode == IW_MODE_MASTER)) { //ap mode is not currently supported
 658                 pHTInfoEle->ControlChl                  = ieee->current_network.channel;
 659                 pHTInfoEle->ExtChlOffset                = ((!pHT->bRegBW40MHz) ? HT_EXTCHNL_OFFSET_NO_EXT :
 660                                                                                         (ieee->current_network.channel <= 6) ?
 661                                                                                                 HT_EXTCHNL_OFFSET_UPPER : HT_EXTCHNL_OFFSET_LOWER);
 662                 pHTInfoEle->RecommemdedTxWidth  = pHT->bRegBW40MHz;
 663                 pHTInfoEle->RIFS                                        = 0;
 664                 pHTInfoEle->PSMPAccessOnly              = 0;
 665                 pHTInfoEle->SrvIntGranularity           = 0;
 666                 pHTInfoEle->OptMode                             = pHT->CurrentOpMode;
 667                 pHTInfoEle->NonGFDevPresent             = 0;
 668                 pHTInfoEle->DualBeacon                  = 0;
 669                 pHTInfoEle->SecondaryBeacon             = 0;
 670                 pHTInfoEle->LSigTxopProtectFull         = 0;
 671                 pHTInfoEle->PcoActive                           = 0;
 672                 pHTInfoEle->PcoPhase                            = 0;
 673
 674                 memset(pHTInfoEle->BasicMSC, 0, 16);
 675
 676                 *len = 22 + 2; //same above
 677         } else {
 678                 //STA should not generate High Throughput Information Element
 679                 *len = 0;
 680         }
 681         //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA | IEEE80211_DL_HT, posHTInfo, *len - 2);
 682         //HTDebugHTInfo(posHTInfo, "HTConstructInforElement");
 683 }
 684
 685 /*
 686  * According to experiment, Realtek AP to STA (based on rtl8190) may achieve
 687  * best performance if both STA and AP set limitation of aggregation size to
 688  * 32K, that is, set AMPDU density to 2 (Ref: IEEE 11n specification).
 689  * However, if Realtek STA associates to other AP, STA should set limitation of
 690  * aggregation size to 8K, otherwise, performance of traffic stream from STA to
 691  * AP will be much less than the traffic stream from AP to STA if both of the
 692  * stream runs concurrently at the same time.
 693  *
 694  *  Frame Format
 695  *  Element ID          Length          OUI             Type1           Reserved
 696  *  1 byte              1 byte          3 bytes         1 byte          1 byte
 697  *
 698  *  OUI         = 0x00, 0xe0, 0x4c,
 699  *  Type        = 0x02
 700  *  Reserved    = 0x00
 701  *
 702  *  2007.8.21 by Emily
 703  */
 704 /*
 705  *function:  Construct  Information Element in Beacon... in RT2RT condition
 706  *   input:  struct ieee80211_device*   ieee
 707  *           u8*                  posRT2RTAgg //pointer to store Information Ele
 708  *           u8*                  len   //store len
 709  *  output:  none
 710  *  return:  none
 711  *  notice:
 712  */
 713 void HTConstructRT2RTAggElement(struct ieee80211_device *ieee, u8 *posRT2RTAgg, u8 *len)
 714 {
 715         if (!posRT2RTAgg) {
 716                 IEEE80211_DEBUG(IEEE80211_DL_ERR,
 717                                 "posRT2RTAgg can't be null in %s\n",
 718                                 __func__);
 719                 return;
 720         }
 721         memset(posRT2RTAgg, 0, *len);
 722         *posRT2RTAgg++ = 0x00;
 723         *posRT2RTAgg++ = 0xe0;
 724         *posRT2RTAgg++ = 0x4c;
 725         *posRT2RTAgg++ = 0x02;
 726         *posRT2RTAgg++ = 0x01;
 727         *posRT2RTAgg = 0x10;//*posRT2RTAgg = 0x02;
 728
 729         if (ieee->bSupportRemoteWakeUp)
 730                 *posRT2RTAgg |= 0x08;//RT_HT_CAP_USE_WOW;
 731
 732         *len = 6 + 2;
 733         return;
 734 #ifdef TODO
 735 #if (HAL_CODE_BASE == RTL8192 && DEV_BUS_TYPE == USB_INTERFACE)
 736         /*
 737         //Emily. If it is required to Ask Realtek AP to send AMPDU during AES mode, enable this
 738            section of code.
 739         if(IS_UNDER_11N_AES_MODE(Adapter))
 740         {
 741                 posRT2RTAgg->octet[5] |= RT_HT_CAP_USE_AMPDU;
 742         }else
 743         {
 744                 posRT2RTAgg->octet[5] &= 0xfb;
 745         }
 746         */
 747 #else
 748         // Do Nothing
 749 #endif
 750
 751         posRT2RTAgg->Length = 6;
 752 #endif
 753 }
 754
 755 /*
 756  *function:  Pick the right Rate Adaptive table to use
 757  *   input:  struct ieee80211_device*   ieee
 758  *           u8*                      pOperateMCS //A pointer to MCS rate bitmap
 759  *  return:  always we return true
 760  *  notice:
 761  */
 762 static u8 HT_PickMCSRate(struct ieee80211_device *ieee, u8 *pOperateMCS)
 763 {
 764         if (!pOperateMCS) {
 765                 IEEE80211_DEBUG(IEEE80211_DL_ERR,
 766                                 "pOperateMCS can't be null in %s\n",
 767                                 __func__);
 768                 return false;
 769         }
 770
 771         switch (ieee->mode) {
 772         case IEEE_A:
 773         case IEEE_B:
 774         case IEEE_G:
 775                 //legacy rate routine handled at selectedrate
 776
 777                 //no MCS rate
 778                 memset(pOperateMCS, 0, 16);
 779                 break;
 780
 781         case IEEE_N_24G:        //assume CCK rate ok
 782         case IEEE_N_5G:
 783                 // Legacy part we only use 6, 5.5,2,1 for N_24G and 6 for N_5G.
 784                 // Legacy part shall be handled at SelectRateSet().
 785
 786                 //HT part
 787                 // TODO: may be different if we have different number of antenna
 788                 pOperateMCS[0] &= RATE_ADPT_1SS_MASK;   //support MCS 0~7
 789                 pOperateMCS[1] &= RATE_ADPT_2SS_MASK;
 790                 pOperateMCS[3] &= RATE_ADPT_MCS32_MASK;
 791                 break;
 792
 793         //should never reach here
 794         default:
 795                 break;
 796         }
 797
 798         return true;
 799 }
 800
 801 /*
 802  *      Description:
 803  *              This function will get the highest speed rate in input MCS set.
 804  *
 805  *      /param  Adapter                 Pionter to Adapter entity
 806  *                      pMCSRateSet             Pointer to MCS rate bitmap
 807  *                      pMCSFilter              Pointer to MCS rate filter
 808  *
 809  *      /return Highest MCS rate included in pMCSRateSet and filtered by pMCSFilter.
 810  *
 811  */
 812 /*
 813  *function:  This function will get the highest speed rate in input MCS set.
 814  *   input:  struct ieee80211_device*   ieee
 815  *           u8*                        pMCSRateSet //Pointer to MCS rate bitmap
 816  *           u8*                        pMCSFilter //Pointer to MCS rate filter
 817  *  return:  Highest MCS rate included in pMCSRateSet and filtered by pMCSFilter
 818  *  notice:
 819  */
 820 u8 HTGetHighestMCSRate(struct ieee80211_device *ieee, u8 *pMCSRateSet, u8 *pMCSFilter)
 821 {
 822         u8              i, j;
 823         u8              bitMap;
 824         u8              mcsRate = 0;
 825         u8              availableMcsRate[16];
 826
 827         if (!pMCSRateSet || !pMCSFilter) {
 828                 IEEE80211_DEBUG(IEEE80211_DL_ERR,
 829                                 "pMCSRateSet or pMCSFilter can't be null in %s\n",
 830                                 __func__);
 831                 return false;
 832         }
 833         for (i = 0; i < 16; i++)
 834                 availableMcsRate[i] = pMCSRateSet[i] & pMCSFilter[i];
 835
 836         for (i = 0; i < 16; i++) {
 837                 if (availableMcsRate[i] != 0)
 838                         break;
 839         }
 840         if (i == 16)
 841                 return false;
 842
 843         for (i = 0; i < 16; i++) {
 844                 if (availableMcsRate[i] != 0) {
 845                         bitMap = availableMcsRate[i];
 846                         for (j = 0; j < 8; j++) {
 847                                 if ((bitMap % 2) != 0) {
 848                                         if (HTMcsToDataRate(ieee, (8 * i + j)) > HTMcsToDataRate(ieee, mcsRate))
 849                                                 mcsRate = (8 * i + j);
 850                                 }
 851                                 bitMap >>= 1;
 852                         }
 853                 }
 854         }
 855         return (mcsRate | 0x80);
 856 }
 857
 858 /*
 859  * 1.Filter our operation rate set with AP's rate set
 860  * 2.shall reference channel bandwidth, STBC, Antenna number
 861  * 3.generate rate adative table for firmware
 862  * David 20060906
 863  *
 864  * \pHTSupportedCap: the connected STA's supported rate Capability element
 865  */
 866 static u8 HTFilterMCSRate(struct ieee80211_device *ieee, u8 *pSupportMCS,
 867                           u8 *pOperateMCS)
 868 {
 869         u8 i = 0;
 870
 871         // filter out operational rate set not supported by AP, the length of it is 16
 872         for (i = 0; i <= 15; i++)
 873                 pOperateMCS[i] = ieee->Regdot11HTOperationalRateSet[i] & pSupportMCS[i];
 874
 875         // TODO: adjust our operational rate set  according to our channel bandwidth, STBC and Antenna number
 876         /*
 877          * TODO: fill suggested rate adaptive rate index and give firmware info
 878          * using Tx command packet we also shall suggested the first start rate
 879          * set according to our signal strength
 880          */
 881         HT_PickMCSRate(ieee, pOperateMCS);
 882
 883         // For RTL819X, if pairwisekey = wep/tkip, we support only MCS0~7.
 884         if (ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev))
 885                 pOperateMCS[1] = 0;
 886
 887         /*
 888          * For RTL819X, we support only MCS0~15.
 889          * And also, we do not know how to use MCS32 now.
 890          */
 891         for (i = 2; i <= 15; i++)
 892                 pOperateMCS[i] = 0;
 893
 894         return true;
 895 }
 896
 897 void HTSetConnectBwMode(struct ieee80211_device *ieee, enum ht_channel_width Bandwidth, enum ht_extension_chan_offset   Offset);
 898 void HTOnAssocRsp(struct ieee80211_device *ieee)
 899 {
 900         PRT_HIGH_THROUGHPUT     pHTInfo = ieee->pHTInfo;
 901         PHT_CAPABILITY_ELE              pPeerHTCap = NULL;
 902         PHT_INFORMATION_ELE             pPeerHTInfo = NULL;
 903         u16     nMaxAMSDUSize = 0;
 904         u8      *pMcsFilter = NULL;
 905
 906         static u8                               EWC11NHTCap[] = {0x00, 0x90, 0x4c, 0x33};               // For 11n EWC definition, 2007.07.17, by Emily
 907         static u8                               EWC11NHTInfo[] = {0x00, 0x90, 0x4c, 0x34};      // For 11n EWC definition, 2007.07.17, by Emily
 908
 909         if (!pHTInfo->bCurrentHTSupport) {
 910                 IEEE80211_DEBUG(IEEE80211_DL_ERR,
 911                                 "<=== %s: HT_DISABLE\n",
 912                                 __func__);
 913                 return;
 914         }
 915         IEEE80211_DEBUG(IEEE80211_DL_HT, "===> HTOnAssocRsp_wq(): HT_ENABLE\n");
 916 //      IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, pHTInfo->PeerHTCapBuf, sizeof(HT_CAPABILITY_ELE));
 917 //      IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, pHTInfo->PeerHTInfoBuf, sizeof(HT_INFORMATION_ELE));
 918
 919 //      HTDebugHTCapability(pHTInfo->PeerHTCapBuf,"HTOnAssocRsp_wq");
 920 //      HTDebugHTInfo(pHTInfo->PeerHTInfoBuf,"HTOnAssocRsp_wq");
 921         //
 922         if (!memcmp(pHTInfo->PeerHTCapBuf, EWC11NHTCap, sizeof(EWC11NHTCap)))
 923                 pPeerHTCap = (PHT_CAPABILITY_ELE)(&pHTInfo->PeerHTCapBuf[4]);
 924         else
 925                 pPeerHTCap = (PHT_CAPABILITY_ELE)(pHTInfo->PeerHTCapBuf);
 926
 927         if (!memcmp(pHTInfo->PeerHTInfoBuf, EWC11NHTInfo, sizeof(EWC11NHTInfo)))
 928                 pPeerHTInfo = (PHT_INFORMATION_ELE)(&pHTInfo->PeerHTInfoBuf[4]);
 929         else
 930                 pPeerHTInfo = (PHT_INFORMATION_ELE)(pHTInfo->PeerHTInfoBuf);
 931
 932         ////////////////////////////////////////////////////////
 933         // Configurations:
 934         ////////////////////////////////////////////////////////
 935         IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA | IEEE80211_DL_HT, pPeerHTCap, sizeof(HT_CAPABILITY_ELE));
 936 //      IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA|IEEE80211_DL_HT, pPeerHTInfo, sizeof(HT_INFORMATION_ELE));
 937         // Config Supported Channel Width setting
 938         //
 939         HTSetConnectBwMode(ieee, (enum ht_channel_width)(pPeerHTCap->ChlWidth), (enum ht_extension_chan_offset)(pPeerHTInfo->ExtChlOffset));
 940
 941         pHTInfo->bCurTxBW40MHz = (pPeerHTInfo->RecommemdedTxWidth == 1);
 942
 943         /*
 944          * Update short GI/ long GI setting
 945          *
 946          * TODO:
 947          */
 948         pHTInfo->bCurShortGI20MHz = pHTInfo->bRegShortGI20MHz &&
 949                                     (pPeerHTCap->ShortGI20Mhz == 1);
 950         pHTInfo->bCurShortGI40MHz = pHTInfo->bRegShortGI40MHz &&
 951                                    (pPeerHTCap->ShortGI40Mhz == 1);
 952
 953         /*
 954          * Config TX STBC setting
 955          *
 956          * TODO:
 957          */
 958
 959         /*
 960          * Config DSSS/CCK  mode in 40MHz mode
 961          *
 962          * TODO:
 963          */
 964         pHTInfo->bCurSuppCCK = pHTInfo->bRegSuppCCK &&
 965                                (pPeerHTCap->DssCCk == 1);
 966
 967         /*
 968          * Config and configure A-MSDU setting
 969          */
 970         pHTInfo->bCurrent_AMSDU_Support = pHTInfo->bAMSDU_Support;
 971
 972         nMaxAMSDUSize = (pPeerHTCap->MaxAMSDUSize == 0) ? 3839 : 7935;
 973
 974         if (pHTInfo->nAMSDU_MaxSize > nMaxAMSDUSize)
 975                 pHTInfo->nCurrent_AMSDU_MaxSize = nMaxAMSDUSize;
 976         else
 977                 pHTInfo->nCurrent_AMSDU_MaxSize = pHTInfo->nAMSDU_MaxSize;
 978         /*
 979          * Config A-MPDU setting
 980          */
 981         pHTInfo->bCurrentAMPDUEnable = pHTInfo->bAMPDUEnable;
 982
 983         /*
 984          * <1> Decide AMPDU Factor
 985          * By Emily
 986          */
 987         if (!pHTInfo->bRegRT2RTAggregation) {
 988                 // Decide AMPDU Factor according to protocol handshake
 989                 if (pHTInfo->AMPDU_Factor > pPeerHTCap->MaxRxAMPDUFactor)
 990                         pHTInfo->CurrentAMPDUFactor = pPeerHTCap->MaxRxAMPDUFactor;
 991                 else
 992                         pHTInfo->CurrentAMPDUFactor = pHTInfo->AMPDU_Factor;
 993         } else {
 994                 /*
 995                  * Set MPDU density to 2 to Realtek AP, and set it to 0 for others
 996                  * Replace MPDU factor declared in original association response frame format. 2007.08.20 by Emily
 997                  */
 998                 if (ieee->current_network.bssht.bdRT2RTAggregation) {
 999                         if (ieee->pairwise_key_type != KEY_TYPE_NA)
1000                                 // Realtek may set 32k in security mode and 64k for others
1001                                 pHTInfo->CurrentAMPDUFactor = pPeerHTCap->MaxRxAMPDUFactor;
1002                         else
1003                                 pHTInfo->CurrentAMPDUFactor = HT_AGG_SIZE_64K;
1004                 } else {
1005                         if (pPeerHTCap->MaxRxAMPDUFactor < HT_AGG_SIZE_32K)
1006                                 pHTInfo->CurrentAMPDUFactor = pPeerHTCap->MaxRxAMPDUFactor;
1007                         else
1008                                 pHTInfo->CurrentAMPDUFactor = HT_AGG_SIZE_32K;
1009                 }
1010         }
1011
1012         /*
1013          * <2> Set AMPDU Minimum MPDU Start Spacing
1014          * 802.11n 3.0 section 9.7d.3
1015          */
1016         if (pHTInfo->MPDU_Density > pPeerHTCap->MPDUDensity)
1017                 pHTInfo->CurrentMPDUDensity = pHTInfo->MPDU_Density;
1018         else
1019                 pHTInfo->CurrentMPDUDensity = pPeerHTCap->MPDUDensity;
1020         if (ieee->pairwise_key_type != KEY_TYPE_NA)
1021                 pHTInfo->CurrentMPDUDensity     = 7; // 8us
1022         // Force TX AMSDU
1023
1024         // Lanhsin: mark for tmp to avoid deauth by ap from  s3
1025         //if(memcmp(pMgntInfo->Bssid, NETGEAR834Bv2_BROADCOM, 3)==0)
1026         if (0) {
1027                 pHTInfo->bCurrentAMPDUEnable = false;
1028                 pHTInfo->ForcedAMSDUMode = HT_AGG_FORCE_ENABLE;
1029                 pHTInfo->ForcedAMSDUMaxSize = 7935;
1030
1031                 pHTInfo->IOTAction |=  HT_IOT_ACT_TX_USE_AMSDU_8K;
1032         }
1033
1034         // Rx Reorder Setting
1035         pHTInfo->bCurRxReorderEnable = pHTInfo->bRegRxReorderEnable;
1036
1037         /*
1038          * Filter out unsupported HT rate for this AP
1039          * Update RATR table
1040          * This is only for 8190 ,8192 or later product which using firmware to
1041          * handle rate adaptive mechanism.
1042          */
1043
1044         /*
1045          * Handle Ralink AP bad MCS rate set condition. Joseph.
1046          * This fix the bug of Ralink AP. This may be removed in the future.
1047          */
1048         if (pPeerHTCap->MCS[0] == 0)
1049                 pPeerHTCap->MCS[0] = 0xff;
1050
1051         HTFilterMCSRate(ieee, pPeerHTCap->MCS, ieee->dot11HTOperationalRateSet);
1052
1053         /*
1054          * Config MIMO Power Save setting
1055          */
1056         pHTInfo->PeerMimoPs = pPeerHTCap->MimoPwrSave;
1057         if (pHTInfo->PeerMimoPs == MIMO_PS_STATIC)
1058                 pMcsFilter = MCS_FILTER_1SS;
1059         else
1060                 pMcsFilter = MCS_FILTER_ALL;
1061         //WB add for MCS8 bug
1062 //      pMcsFilter = MCS_FILTER_1SS;
1063         ieee->HTHighestOperaRate = HTGetHighestMCSRate(ieee, ieee->dot11HTOperationalRateSet, pMcsFilter);
1064         ieee->HTCurrentOperaRate = ieee->HTHighestOperaRate;
1065
1066         /*
1067          * Config current operation mode.
1068          */
1069         pHTInfo->CurrentOpMode = pPeerHTInfo->OptMode;
1070 }
1071
1072 void HTSetConnectBwModeCallback(struct ieee80211_device *ieee);
1073 /*
1074  *function:  initialize HT info(struct PRT_HIGH_THROUGHPUT)
1075  *   input:  struct ieee80211_device*   ieee
1076  *  output:  none
1077  *  return:  none
1078  *  notice: This function is called when
1079  *                                  *  (1) MPInitialization Phase
1080  *                                  *  (2) Receiving of Deauthentication from AP
1081  */
1082 // TODO: Should this funciton be called when receiving of Disassociation?
1083 void HTInitializeHTInfo(struct ieee80211_device *ieee)
1084 {
1085         PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
1086
1087         /*
1088          * These parameters will be reset when receiving deauthentication packet
1089          */
1090         IEEE80211_DEBUG(IEEE80211_DL_HT, "===========>%s()\n", __func__);
1091         pHTInfo->bCurrentHTSupport = false;
1092
1093         // 40MHz channel support
1094         pHTInfo->bCurBW40MHz = false;
1095         pHTInfo->bCurTxBW40MHz = false;
1096
1097         // Short GI support
1098         pHTInfo->bCurShortGI20MHz = false;
1099         pHTInfo->bCurShortGI40MHz = false;
1100         pHTInfo->bForcedShortGI = false;
1101
1102         /*
1103          * CCK rate support
1104          * This flag is set to true to support CCK rate by default.
1105          * It will be affected by "pHTInfo->bRegSuppCCK" and AP capabilities
1106          * only when associate to 11N BSS.
1107          */
1108         pHTInfo->bCurSuppCCK = true;
1109
1110         // AMSDU related
1111         pHTInfo->bCurrent_AMSDU_Support = false;
1112         pHTInfo->nCurrent_AMSDU_MaxSize = pHTInfo->nAMSDU_MaxSize;
1113
1114         // AMPUD related
1115         pHTInfo->CurrentMPDUDensity = pHTInfo->MPDU_Density;
1116         pHTInfo->CurrentAMPDUFactor = pHTInfo->AMPDU_Factor;
1117
1118         // Initialize all of the parameters related to 11n
1119         memset(&pHTInfo->SelfHTCap, 0, sizeof(pHTInfo->SelfHTCap));
1120         memset(&pHTInfo->SelfHTInfo, 0, sizeof(pHTInfo->SelfHTInfo));
1121         memset(&pHTInfo->PeerHTCapBuf, 0, sizeof(pHTInfo->PeerHTCapBuf));
1122         memset(&pHTInfo->PeerHTInfoBuf, 0, sizeof(pHTInfo->PeerHTInfoBuf));
1123
1124         pHTInfo->bSwBwInProgress = false;
1125         pHTInfo->ChnlOp = CHNLOP_NONE;
1126
1127         // Set default IEEE spec for Draft N
1128         pHTInfo->ePeerHTSpecVer = HT_SPEC_VER_IEEE;
1129
1130         // Realtek proprietary aggregation mode
1131         pHTInfo->bCurrentRT2RTAggregation = false;
1132         pHTInfo->bCurrentRT2RTLongSlotTime = false;
1133         pHTInfo->IOTPeer = 0;
1134         pHTInfo->IOTAction = 0;
1135
1136         //MCS rate initialized here
1137         {
1138                 u8 *RegHTSuppRateSets = &ieee->RegHTSuppRateSet[0];
1139
1140                 RegHTSuppRateSets[0] = 0xFF;    //support MCS 0~7
1141                 RegHTSuppRateSets[1] = 0xFF;    //support MCS 8~15
1142                 RegHTSuppRateSets[4] = 0x01;    //support MCS 32
1143         }
1144 }
1145
1146 /*
1147  *function:  initialize Bss HT structure(struct PBSS_HT)
1148  *   input:  PBSS_HT pBssHT //to be initialized
1149  *  output:  none
1150  *  return:  none
1151  *  notice: This function is called when initialize network structure
1152  */
1153 void HTInitializeBssDesc(PBSS_HT pBssHT)
1154 {
1155         pBssHT->bdSupportHT = false;
1156         memset(pBssHT->bdHTCapBuf, 0, sizeof(pBssHT->bdHTCapBuf));
1157         pBssHT->bdHTCapLen = 0;
1158         memset(pBssHT->bdHTInfoBuf, 0, sizeof(pBssHT->bdHTInfoBuf));
1159         pBssHT->bdHTInfoLen = 0;
1160
1161         pBssHT->bdHTSpecVer = HT_SPEC_VER_IEEE;
1162
1163         pBssHT->bdRT2RTAggregation = false;
1164         pBssHT->bdRT2RTLongSlotTime = false;
1165 }
1166
1167 /*
1168  *function:  initialize Bss HT structure(struct PBSS_HT)
1169  *   input:  struct ieee80211_device    *ieee
1170  *           struct ieee80211_network   *pNetwork //usually current network
1171  *                                                  we are live in
1172  *  output:  none
1173  *  return:  none
1174  *  notice: This function should ONLY be called before association
1175  */
1176 void HTResetSelfAndSavePeerSetting(struct ieee80211_device *ieee,       struct ieee80211_network *pNetwork)
1177 {
1178         PRT_HIGH_THROUGHPUT             pHTInfo = ieee->pHTInfo;
1179 //      u16                                             nMaxAMSDUSize;
1180 //      PHT_CAPABILITY_ELE              pPeerHTCap = (PHT_CAPABILITY_ELE)pNetwork->bssht.bdHTCapBuf;
1181 //      PHT_INFORMATION_ELE             pPeerHTInfo = (PHT_INFORMATION_ELE)pNetwork->bssht.bdHTInfoBuf;
1182 //      u8*     pMcsFilter;
1183         u8      bIOTAction = 0;
1184
1185         //
1186         //  Save Peer Setting before Association
1187         //
1188         IEEE80211_DEBUG(IEEE80211_DL_HT, "==============>%s()\n", __func__);
1189         /*unmark bEnableHT flag here is the same reason why unmarked in function ieee80211_softmac_new_net. WB 2008.09.10*/
1190 //      if( pHTInfo->bEnableHT &&  pNetwork->bssht.bdSupportHT)
1191         if (pNetwork->bssht.bdSupportHT) {
1192                 pHTInfo->bCurrentHTSupport = true;
1193                 pHTInfo->ePeerHTSpecVer = pNetwork->bssht.bdHTSpecVer;
1194
1195                 // Save HTCap and HTInfo information Element
1196                 if (pNetwork->bssht.bdHTCapLen > 0 &&   pNetwork->bssht.bdHTCapLen <= sizeof(pHTInfo->PeerHTCapBuf))
1197                         memcpy(pHTInfo->PeerHTCapBuf, pNetwork->bssht.bdHTCapBuf, pNetwork->bssht.bdHTCapLen);
1198
1199                 if (pNetwork->bssht.bdHTInfoLen > 0 && pNetwork->bssht.bdHTInfoLen <= sizeof(pHTInfo->PeerHTInfoBuf))
1200                         memcpy(pHTInfo->PeerHTInfoBuf, pNetwork->bssht.bdHTInfoBuf, pNetwork->bssht.bdHTInfoLen);
1201
1202                 // Check whether RT to RT aggregation mode is enabled
1203                 if (pHTInfo->bRegRT2RTAggregation) {
1204                         pHTInfo->bCurrentRT2RTAggregation = pNetwork->bssht.bdRT2RTAggregation;
1205                         pHTInfo->bCurrentRT2RTLongSlotTime = pNetwork->bssht.bdRT2RTLongSlotTime;
1206                 } else {
1207                         pHTInfo->bCurrentRT2RTAggregation = false;
1208                         pHTInfo->bCurrentRT2RTLongSlotTime = false;
1209                 }
1210
1211                 // Determine the IOT Peer Vendor.
1212                 HTIOTPeerDetermine(ieee);
1213
1214                 /*
1215                  * Decide IOT Action
1216                  * Must be called after the parameter of pHTInfo->bCurrentRT2RTAggregation is decided
1217                  */
1218                 pHTInfo->IOTAction = 0;
1219                 bIOTAction = HTIOTActIsDisableMCS14(ieee, pNetwork->bssid);
1220                 if (bIOTAction)
1221                         pHTInfo->IOTAction |= HT_IOT_ACT_DISABLE_MCS14;
1222
1223                 bIOTAction = HTIOTActIsDisableMCS15(ieee);
1224                 if (bIOTAction)
1225                         pHTInfo->IOTAction |= HT_IOT_ACT_DISABLE_MCS15;
1226
1227                 bIOTAction = HTIOTActIsDisableMCSTwoSpatialStream(ieee, pNetwork->bssid);
1228                 if (bIOTAction)
1229                         pHTInfo->IOTAction |= HT_IOT_ACT_DISABLE_ALL_2SS;
1230
1231                 bIOTAction = HTIOTActIsDisableEDCATurbo(ieee, pNetwork->bssid);
1232                 if (bIOTAction)
1233                         pHTInfo->IOTAction |= HT_IOT_ACT_DISABLE_EDCA_TURBO;
1234
1235                 bIOTAction = HTIOTActIsMgntUseCCK6M(pNetwork);
1236                 if (bIOTAction)
1237                         pHTInfo->IOTAction |= HT_IOT_ACT_MGNT_USE_CCK_6M;
1238
1239                 bIOTAction = HTIOTActIsCCDFsync(pNetwork->bssid);
1240                 if (bIOTAction)
1241                         pHTInfo->IOTAction |= HT_IOT_ACT_CDD_FSYNC;
1242         } else {
1243                 pHTInfo->bCurrentHTSupport = false;
1244                 pHTInfo->bCurrentRT2RTAggregation = false;
1245                 pHTInfo->bCurrentRT2RTLongSlotTime = false;
1246
1247                 pHTInfo->IOTAction = 0;
1248         }
1249 }
1250
1251 void HTUpdateSelfAndPeerSetting(struct ieee80211_device *ieee,  struct ieee80211_network *pNetwork)
1252 {
1253         PRT_HIGH_THROUGHPUT     pHTInfo = ieee->pHTInfo;
1254 //      PHT_CAPABILITY_ELE              pPeerHTCap = (PHT_CAPABILITY_ELE)pNetwork->bssht.bdHTCapBuf;
1255         PHT_INFORMATION_ELE             pPeerHTInfo = (PHT_INFORMATION_ELE)pNetwork->bssht.bdHTInfoBuf;
1256
1257         if (pHTInfo->bCurrentHTSupport) {
1258                 /*
1259                  * Config current operation mode.
1260                  */
1261                 if (pNetwork->bssht.bdHTInfoLen != 0)
1262                         pHTInfo->CurrentOpMode = pPeerHTInfo->OptMode;
1263
1264                 /*
1265                  * <TODO: Config according to OBSS non-HT STA present!!>
1266                  */
1267         }
1268 }
1269 EXPORT_SYMBOL(HTUpdateSelfAndPeerSetting);
1270
1271 /*
1272  *function:  check whether HT control field exists
1273  *   input:  struct ieee80211_device    *ieee
1274  *           u8*                        pFrame //coming skb->data
1275  *  output:  none
1276  *  return:  return true if HT control field exists(false otherwise)
1277  *  notice:
1278  */
1279 u8 HTCCheck(struct ieee80211_device *ieee, u8 *pFrame)
1280 {
1281         if (ieee->pHTInfo->bCurrentHTSupport) {
1282                 if ((IsQoSDataFrame(pFrame) && Frame_Order(pFrame)) == 1) {
1283                         IEEE80211_DEBUG(IEEE80211_DL_HT, "HT CONTROL FILED EXIST!!\n");
1284                         return true;
1285                 }
1286         }
1287         return false;
1288 }
1289
1290 /*
1291  * This function set bandwidth mode in protocol layer.
1292  */
1293 void HTSetConnectBwMode(struct ieee80211_device *ieee, enum ht_channel_width Bandwidth, enum ht_extension_chan_offset Offset)
1294 {
1295         PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
1296 //      u32 flags = 0;
1297
1298         if (!pHTInfo->bRegBW40MHz)
1299                 return;
1300
1301         // To reduce dummy operation
1302 //      if((pHTInfo->bCurBW40MHz==false && Bandwidth==HT_CHANNEL_WIDTH_20) ||
1303 //         (pHTInfo->bCurBW40MHz==true && Bandwidth==HT_CHANNEL_WIDTH_20_40 && Offset==pHTInfo->CurSTAExtChnlOffset))
1304 //              return;
1305
1306 //      spin_lock_irqsave(&(ieee->bw_spinlock), flags);
1307         if (pHTInfo->bSwBwInProgress) {
1308 //              spin_unlock_irqrestore(&(ieee->bw_spinlock), flags);
1309                 return;
1310         }
1311         //if in half N mode, set to 20M bandwidth please 09.08.2008 WB.
1312         if (Bandwidth == HT_CHANNEL_WIDTH_20_40 && (!ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev))) {
1313                         // Handle Illegal extension channel offset!!
1314                 if (ieee->current_network.channel < 2 && Offset == HT_EXTCHNL_OFFSET_LOWER)
1315                         Offset = HT_EXTCHNL_OFFSET_NO_EXT;
1316                 if (Offset == HT_EXTCHNL_OFFSET_UPPER || Offset == HT_EXTCHNL_OFFSET_LOWER) {
1317                         pHTInfo->bCurBW40MHz = true;
1318                         pHTInfo->CurSTAExtChnlOffset = Offset;
1319                 } else {
1320                         pHTInfo->bCurBW40MHz = false;
1321                         pHTInfo->CurSTAExtChnlOffset = HT_EXTCHNL_OFFSET_NO_EXT;
1322                 }
1323         } else {
1324                 pHTInfo->bCurBW40MHz = false;
1325                 pHTInfo->CurSTAExtChnlOffset = HT_EXTCHNL_OFFSET_NO_EXT;
1326         }
1327
1328         pHTInfo->bSwBwInProgress = true;
1329
1330         /*
1331          * TODO: 2007.7.13 by Emily Wait 2000ms  in order to guarantee that
1332          * switching bandwidth is executed after scan is finished. It is a
1333          * temporal solution because software should ganrantee the last
1334          * operation of switching bandwidth is executed properlly.
1335          */
1336         HTSetConnectBwModeCallback(ieee);
1337
1338 //      spin_unlock_irqrestore(&(ieee->bw_spinlock), flags);
1339 }
1340
1341 void HTSetConnectBwModeCallback(struct ieee80211_device *ieee)
1342 {
1343         PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
1344
1345         IEEE80211_DEBUG(IEEE80211_DL_HT, "======>%s()\n", __func__);
1346
1347         if (pHTInfo->bCurBW40MHz) {
1348                 if (pHTInfo->CurSTAExtChnlOffset == HT_EXTCHNL_OFFSET_UPPER)
1349                         ieee->set_chan(ieee->dev, ieee->current_network.channel + 2);
1350                 else if (pHTInfo->CurSTAExtChnlOffset == HT_EXTCHNL_OFFSET_LOWER)
1351                         ieee->set_chan(ieee->dev, ieee->current_network.channel - 2);
1352                 else
1353                         ieee->set_chan(ieee->dev, ieee->current_network.channel);
1354
1355                 ieee->SetBWModeHandler(ieee->dev, HT_CHANNEL_WIDTH_20_40, pHTInfo->CurSTAExtChnlOffset);
1356         } else {
1357                 ieee->set_chan(ieee->dev, ieee->current_network.channel);
1358                 ieee->SetBWModeHandler(ieee->dev, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
1359         }
1360
1361         pHTInfo->bSwBwInProgress = false;
1362 }