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         /*
  97          * 8190 only, Realtek proprietary aggregation mode
  98          * Set MPDUDensity=2,   1: Set MPDUDensity=2(32k)  for Realtek AP and set MPDUDensity=0(8k) for others
  99          */
 100         pHTInfo->bRegRT2RTAggregation = 1;//0: Set MPDUDensity=2,   1: Set MPDUDensity=2(32k)  for Realtek AP and set MPDUDensity=0(8k) for others
 101
 102         // For Rx Reorder Control
 103         pHTInfo->bRegRxReorderEnable = 1;
 104         pHTInfo->RxReorderWinSize = 64;
 105         pHTInfo->RxReorderPendingTime = 30;
 106
 107 #ifdef USB_TX_DRIVER_AGGREGATION_ENABLE
 108         pHTInfo->UsbTxAggrNum = 4;
 109 #endif
 110 #ifdef USB_RX_AGGREGATION_SUPPORT
 111         pHTInfo->UsbRxFwAggrEn = 1;
 112         pHTInfo->UsbRxFwAggrPageNum = 24;
 113         pHTInfo->UsbRxFwAggrPacketNum = 8;
 114         pHTInfo->UsbRxFwAggrTimeout = 16; ////usb rx FW aggregation timeout threshold.It's in units of 64us
 115 #endif
 116 }
 117
 118 /*
 119  *function:  This function print out each field on HT capability
 120  *           IE mainly from (Beacon/ProbeRsp/AssocReq)
 121  *   input:  u8*        CapIE       //Capability IE to be printed out
 122  *           u8*        TitleString //mainly print out caller function
 123  *  output:  none
 124  *  return:  none
 125  *  notice:  Driver should not print out this message by default.
 126  */
 127 void HTDebugHTCapability(u8 *CapIE, u8 *TitleString)
 128 {
 129         static u8                 EWC11NHTCap[] = {0x00, 0x90, 0x4c, 0x33};     // For 11n EWC definition, 2007.07.17, by Emily
 130         struct ht_capability_ele *pCapELE;
 131
 132         if (!memcmp(CapIE, EWC11NHTCap, sizeof(EWC11NHTCap))) {
 133                 //EWC IE
 134                 IEEE80211_DEBUG(IEEE80211_DL_HT, "EWC IE in %s()\n", __func__);
 135                 pCapELE = (struct ht_capability_ele *)(&CapIE[4]);
 136         } else {
 137                 pCapELE = (struct ht_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 }
 152
 153 /*
 154  *function:  This function print out each field on HT Information
 155  *           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         static u8       EWC11NHTInfo[] = {0x00, 0x90, 0x4c, 0x34};      // For 11n EWC definition, 2007.07.17, by Emily
 165         PHT_INFORMATION_ELE             pHTInfoEle;
 166
 167         if (!memcmp(InfoIE, EWC11NHTInfo, sizeof(EWC11NHTInfo))) {
 168                 // Not EWC IE
 169                 IEEE80211_DEBUG(IEEE80211_DL_HT, "EWC IE in %s()\n", __func__);
 170                 pHTInfoEle = (PHT_INFORMATION_ELE)(&InfoIE[4]);
 171         } else {
 172                 pHTInfoEle = (PHT_INFORMATION_ELE)(&InfoIE[0]);
 173         }
 174
 175         IEEE80211_DEBUG(IEEE80211_DL_HT, "<Log HT Information Element>. Called by %s\n", TitleString);
 176
 177         IEEE80211_DEBUG(IEEE80211_DL_HT, "\tPrimary channel = %d\n", pHTInfoEle->ControlChl);
 178         IEEE80211_DEBUG(IEEE80211_DL_HT, "\tSecondary channel =");
 179         switch (pHTInfoEle->ExtChlOffset) {
 180         case 0:
 181                 IEEE80211_DEBUG(IEEE80211_DL_HT, "Not Present\n");
 182                 break;
 183         case 1:
 184                 IEEE80211_DEBUG(IEEE80211_DL_HT, "Upper channel\n");
 185                 break;
 186         case 2:
 187                 IEEE80211_DEBUG(IEEE80211_DL_HT, "Reserved. Eooro!!!\n");
 188                 break;
 189         case 3:
 190                 IEEE80211_DEBUG(IEEE80211_DL_HT, "Lower Channel\n");
 191                 break;
 192         }
 193         IEEE80211_DEBUG(IEEE80211_DL_HT, "\tRecommended channel width = %s\n", (pHTInfoEle->RecommemdedTxWidth) ? "20Mhz" : "40Mhz");
 194
 195         IEEE80211_DEBUG(IEEE80211_DL_HT, "\tOperation mode for protection = ");
 196         switch (pHTInfoEle->OptMode) {
 197         case 0:
 198                 IEEE80211_DEBUG(IEEE80211_DL_HT, "No Protection\n");
 199                 break;
 200         case 1:
 201                 IEEE80211_DEBUG(IEEE80211_DL_HT, "HT non-member protection mode\n");
 202                 break;
 203         case 2:
 204                 IEEE80211_DEBUG(IEEE80211_DL_HT, "Suggest to open protection\n");
 205                 break;
 206         case 3:
 207                 IEEE80211_DEBUG(IEEE80211_DL_HT, "HT mixed mode\n");
 208                 break;
 209         }
 210
 211         IEEE80211_DEBUG(IEEE80211_DL_HT, "\tBasic MCS Rate Set = [%x][%x][%x][%x][%x]\n", pHTInfoEle->BasicMSC[0],\
 212                                 pHTInfoEle->BasicMSC[1], pHTInfoEle->BasicMSC[2], pHTInfoEle->BasicMSC[3], pHTInfoEle->BasicMSC[4]);
 213 }
 214
 215 static u16 HTMcsToDataRate(struct ieee80211_device *ieee, u8 nMcsRate)
 216 {
 217         PRT_HIGH_THROUGHPUT     pHTInfo = ieee->pHTInfo;
 218
 219         u8      is40MHz = (pHTInfo->bCurBW40MHz) ? 1 : 0;
 220         u8      isShortGI = (pHTInfo->bCurBW40MHz) ?
 221                                                 ((pHTInfo->bCurShortGI40MHz) ? 1 : 0) :
 222                                                 ((pHTInfo->bCurShortGI20MHz) ? 1 : 0);
 223         return MCS_DATA_RATE[is40MHz][isShortGI][(nMcsRate & 0x7f)];
 224 }
 225
 226 /*
 227  *function:  This function returns current datarate.
 228  *   input:  struct ieee80211_device*   ieee
 229  *           u8                         nDataRate
 230  *  output:  none
 231  *  return:  tx rate
 232  *  notice:  quite unsure about how to use this function //wb
 233  */
 234 u16  TxCountToDataRate(struct ieee80211_device *ieee, u8 nDataRate)
 235 {
 236         //PRT_HIGH_THROUGHPUT   pHTInfo = ieee->pHTInfo;
 237         u16             CCKOFDMRate[12] = {0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c};
 238         u8      is40MHz = 0;
 239         u8      isShortGI = 0;
 240
 241         if (nDataRate < 12) {
 242                 return CCKOFDMRate[nDataRate];
 243         } else {
 244                 if (nDataRate >= 0x10 && nDataRate <= 0x1f) { //if(nDataRate > 11 && nDataRate < 28 )
 245                         is40MHz = 0;
 246                         isShortGI = 0;
 247
 248                       // nDataRate = nDataRate - 12;
 249                 } else if (nDataRate >= 0x20  && nDataRate <= 0x2f) { //(27, 44)
 250                         is40MHz = 1;
 251                         isShortGI = 0;
 252
 253                         //nDataRate = nDataRate - 28;
 254                 } else if (nDataRate >= 0x30  && nDataRate <= 0x3f) { //(43, 60)
 255                         is40MHz = 0;
 256                         isShortGI = 1;
 257
 258                         //nDataRate = nDataRate - 44;
 259                 } else if (nDataRate >= 0x40  && nDataRate <= 0x4f) { //(59, 76)
 260                         is40MHz = 1;
 261                         isShortGI = 1;
 262
 263                         //nDataRate = nDataRate - 60;
 264                 }
 265                 return MCS_DATA_RATE[is40MHz][isShortGI][nDataRate & 0xf];
 266         }
 267 }
 268
 269 bool IsHTHalfNmodeAPs(struct ieee80211_device *ieee)
 270 {
 271         bool                    retValue = false;
 272         struct ieee80211_network *net = &ieee->current_network;
 273
 274         if ((memcmp(net->bssid, BELKINF5D8233V1_RALINK, 3) == 0) ||
 275             (memcmp(net->bssid, BELKINF5D82334V3_RALINK, 3) == 0) ||
 276             (memcmp(net->bssid, PCI_RALINK, 3) == 0) ||
 277             (memcmp(net->bssid, EDIMAX_RALINK, 3) == 0) ||
 278             (memcmp(net->bssid, AIRLINK_RALINK, 3) == 0) ||
 279             (net->ralink_cap_exist))
 280                 retValue = true;
 281         else if ((memcmp(net->bssid, UNKNOWN_BORADCOM, 3) == 0) ||
 282                  (memcmp(net->bssid, LINKSYSWRT330_LINKSYSWRT300_BROADCOM, 3) == 0) ||
 283                  (memcmp(net->bssid, LINKSYSWRT350_LINKSYSWRT150_BROADCOM, 3) == 0) ||
 284                  (memcmp(net->bssid, NETGEAR834Bv2_BROADCOM, 3) == 0) ||
 285                  (net->broadcom_cap_exist))
 286                 retValue = true;
 287         else if (net->bssht.bdRT2RTAggregation)
 288                 retValue = true;
 289         else
 290                 retValue = false;
 291
 292         return retValue;
 293 }
 294
 295 /*
 296  *function:  This function returns peer IOT.
 297  *   input:  struct ieee80211_device*   ieee
 298  *  output:  none
 299  *  return:
 300  *  notice:
 301  */
 302 static void HTIOTPeerDetermine(struct ieee80211_device *ieee)
 303 {
 304         PRT_HIGH_THROUGHPUT     pHTInfo = ieee->pHTInfo;
 305         struct ieee80211_network *net = &ieee->current_network;
 306
 307         if (net->bssht.bdRT2RTAggregation)
 308                 pHTInfo->IOTPeer = HT_IOT_PEER_REALTEK;
 309         else if (net->broadcom_cap_exist)
 310                 pHTInfo->IOTPeer = HT_IOT_PEER_BROADCOM;
 311         else if ((memcmp(net->bssid, UNKNOWN_BORADCOM, 3) == 0) ||
 312                  (memcmp(net->bssid, LINKSYSWRT330_LINKSYSWRT300_BROADCOM, 3) == 0) ||
 313                  (memcmp(net->bssid, LINKSYSWRT350_LINKSYSWRT150_BROADCOM, 3) == 0) ||
 314                  (memcmp(net->bssid, NETGEAR834Bv2_BROADCOM, 3) == 0))
 315                 pHTInfo->IOTPeer = HT_IOT_PEER_BROADCOM;
 316         else if ((memcmp(net->bssid, BELKINF5D8233V1_RALINK, 3) == 0) ||
 317                  (memcmp(net->bssid, BELKINF5D82334V3_RALINK, 3) == 0) ||
 318                  (memcmp(net->bssid, PCI_RALINK, 3) == 0) ||
 319                  (memcmp(net->bssid, EDIMAX_RALINK, 3) == 0) ||
 320                  (memcmp(net->bssid, AIRLINK_RALINK, 3) == 0) ||
 321                  net->ralink_cap_exist)
 322                 pHTInfo->IOTPeer = HT_IOT_PEER_RALINK;
 323         else if (net->atheros_cap_exist)
 324                 pHTInfo->IOTPeer = HT_IOT_PEER_ATHEROS;
 325         else if (memcmp(net->bssid, CISCO_BROADCOM, 3) == 0)
 326                 pHTInfo->IOTPeer = HT_IOT_PEER_CISCO;
 327         else
 328                 pHTInfo->IOTPeer = HT_IOT_PEER_UNKNOWN;
 329
 330         IEEE80211_DEBUG(IEEE80211_DL_IOT, "Joseph debug!! IOTPEER: %x\n", pHTInfo->IOTPeer);
 331 }
 332
 333 /*
 334  *function:  Check whether driver should declare received rate up to MCS13
 335  *           only since some chipset is not good at receiving MCS14~15 frame
 336  *           from some AP.
 337  *   input:  struct ieee80211_device*   ieee
 338  *           u8 *                       PeerMacAddr
 339  *  output:  none
 340  *  return:  return 1 if driver should declare MCS13 only(otherwise return 0)
 341  */
 342 static u8 HTIOTActIsDisableMCS14(struct ieee80211_device *ieee, u8 *PeerMacAddr)
 343 {
 344         return 0;
 345 }
 346
 347 /*
 348  * Function:    HTIOTActIsDisableMCS15
 349  *
 350  * Overview:    Check whether driver should declare capability of receiving
 351  *              MCS15
 352  *
 353  * Input:
 354  *                      PADAPTER                Adapter,
 355  *
 356  * Output:              None
 357  * Return:      true if driver should disable MCS15
 358  * 2008.04.15   Emily
 359  */
 360 static bool HTIOTActIsDisableMCS15(struct ieee80211_device *ieee)
 361 {
 362         bool retValue = false;
 363
 364 #ifdef TODO
 365         // Apply for 819u only
 366 #if (HAL_CODE_BASE == RTL8192)
 367
 368 #if (DEV_BUS_TYPE == USB_INTERFACE)
 369         // Alway disable MCS15 by Jerry Chang's request.by Emily, 2008.04.15
 370         retValue = true;
 371 #elif (DEV_BUS_TYPE == PCI_INTERFACE)
 372         // Enable MCS15 if the peer is Cisco AP. by Emily, 2008.05.12
 373 //      if(pBssDesc->bCiscoCapExist)
 374 //              retValue = false;
 375 //      else
 376                 retValue = false;
 377 #endif
 378 #endif
 379 #endif
 380         // Jerry Chang suggest that 8190 1x2 does not need to disable MCS15
 381
 382         return retValue;
 383 }
 384
 385 /*
 386  * Function:    HTIOTActIsDisableMCSTwoSpatialStream
 387  *
 388  * Overview:    Check whether driver should declare capability of receiving
 389  *              All 2 ss packets
 390  *
 391  * Input:
 392  *                      PADAPTER                Adapter,
 393  *
 394  * Output:              None
 395  * Return:      true if driver should disable all two spatial stream packet
 396  * 2008.04.21   Emily
 397  */
 398 static bool HTIOTActIsDisableMCSTwoSpatialStream(struct ieee80211_device *ieee,
 399                                                  u8 *PeerMacAddr)
 400 {
 401 #ifdef TODO
 402         // Apply for 819u only
 403 #endif
 404         return false;
 405 }
 406
 407 /*
 408  *function:  Check whether driver should disable EDCA turbo mode
 409  *   input:  struct ieee80211_device*   ieee
 410  *           u8*                        PeerMacAddr
 411  *  output:  none
 412  *  return:  return 1 if driver should disable EDCA turbo mode
 413  *           (otherwise return 0)
 414  */
 415 static u8 HTIOTActIsDisableEDCATurbo(struct ieee80211_device *ieee,
 416                                      u8 *PeerMacAddr)
 417 {       /* default enable EDCA Turbo mode. */
 418         return false;
 419 }
 420
 421 /*
 422  *function:  Check whether we need to use OFDM to sned MGNT frame for
 423  *           broadcom AP
 424  *   input:  struct ieee80211_network *network   //current network we live
 425  *  output:  none
 426  *  return:  return 1 if true
 427  */
 428 static u8 HTIOTActIsMgntUseCCK6M(struct ieee80211_network *network)
 429 {
 430         u8      retValue = 0;
 431
 432         // 2008/01/25 MH Judeg if we need to use OFDM to sned MGNT frame for broadcom AP.
 433         // 2008/01/28 MH We must prevent that we select null bssid to link.
 434
 435         if (network->broadcom_cap_exist)
 436                 retValue = 1;
 437
 438         return retValue;
 439 }
 440
 441 static u8 HTIOTActIsCCDFsync(u8 *PeerMacAddr)
 442 {
 443         u8      retValue = 0;
 444
 445         if ((memcmp(PeerMacAddr, UNKNOWN_BORADCOM, 3) == 0) ||
 446             (memcmp(PeerMacAddr, LINKSYSWRT330_LINKSYSWRT300_BROADCOM, 3) == 0) ||
 447             (memcmp(PeerMacAddr, LINKSYSWRT350_LINKSYSWRT150_BROADCOM, 3) == 0))
 448                 retValue = 1;
 449
 450         return retValue;
 451 }
 452
 453 void HTResetIOTSetting(PRT_HIGH_THROUGHPUT pHTInfo)
 454 {
 455         pHTInfo->IOTAction = 0;
 456         pHTInfo->IOTPeer = HT_IOT_PEER_UNKNOWN;
 457 }
 458
 459 /*
 460  *function:  Construct Capablility Element in Beacon... if HTEnable is turned on
 461  *   input:  struct ieee80211_device*   ieee
 462  *           u8*                     posHTCap //pointer to store Capability Ele
 463  *           u8*                     len //store length of CE
 464  *           u8                      IsEncrypt //whether encrypt, needed further
 465  *  output:  none
 466  *  return:  none
 467  *  notice:  posHTCap can't be null and should be initialized before.
 468  */
 469 void HTConstructCapabilityElement(struct ieee80211_device *ieee, u8 *posHTCap, u8 *len, u8 IsEncrypt)
 470 {
 471         PRT_HIGH_THROUGHPUT     pHT = ieee->pHTInfo;
 472         struct ht_capability_ele   *pCapELE = NULL;
 473         //u8 bIsDeclareMCS13;
 474
 475         if (!posHTCap || !pHT) {
 476                 IEEE80211_DEBUG(IEEE80211_DL_ERR,
 477                                 "posHTCap or pHTInfo can't be null in %s\n",
 478                                 __func__);
 479                 return;
 480         }
 481         memset(posHTCap, 0, *len);
 482         if (pHT->ePeerHTSpecVer == HT_SPEC_VER_EWC) {
 483                 u8      EWC11NHTCap[] = {0x00, 0x90, 0x4c, 0x33};       // For 11n EWC definition, 2007.07.17, by Emily
 484
 485                 memcpy(posHTCap, EWC11NHTCap, sizeof(EWC11NHTCap));
 486                 pCapELE = (struct ht_capability_ele *)&posHTCap[4];
 487         } else {
 488                 pCapELE = (struct ht_capability_ele *)posHTCap;
 489         }
 490
 491         //HT capability info
 492         pCapELE->AdvCoding              = 0; // This feature is not supported now!!
 493         if (ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev))
 494                 pCapELE->ChlWidth = 0;
 495         else
 496                 pCapELE->ChlWidth = (pHT->bRegBW40MHz ? 1 : 0);
 497
 498 //      pCapELE->ChlWidth               = (pHT->bRegBW40MHz?1:0);
 499         pCapELE->MimoPwrSave            = pHT->SelfMimoPs;
 500         pCapELE->GreenField             = 0; // This feature is not supported now!!
 501         pCapELE->ShortGI20Mhz           = 1; // We can receive Short GI!!
 502         pCapELE->ShortGI40Mhz           = 1; // We can receive Short GI!!
 503         //DbgPrint("TX HT cap/info ele BW=%d SG20=%d SG40=%d\n\r",
 504         //pCapELE->ChlWidth, pCapELE->ShortGI20Mhz, pCapELE->ShortGI40Mhz);
 505         pCapELE->TxSTBC                 = 1;
 506         pCapELE->RxSTBC                 = 0;
 507         pCapELE->DelayBA                = 0;    // Do not support now!!
 508         pCapELE->MaxAMSDUSize           = (MAX_RECEIVE_BUFFER_SIZE >= 7935) ? 1 : 0;
 509         pCapELE->DssCCk                 = ((pHT->bRegBW40MHz) ? (pHT->bRegSuppCCK ? 1 : 0) : 0);
 510         pCapELE->PSMP                   = 0; // Do not support now!!
 511         pCapELE->LSigTxopProtect        = 0; // Do not support now!!
 512
 513         /*
 514          * MAC HT parameters info
 515          * TODO: Nedd to take care of this part
 516          */
 517         IEEE80211_DEBUG(IEEE80211_DL_HT, "TX HT cap/info ele BW=%d MaxAMSDUSize:%d DssCCk:%d\n", pCapELE->ChlWidth, pCapELE->MaxAMSDUSize, pCapELE->DssCCk);
 518
 519         if (IsEncrypt) {
 520                 pCapELE->MPDUDensity    = 7; // 8us
 521                 pCapELE->MaxRxAMPDUFactor = 2; // 2 is for 32 K and 3 is 64K
 522         } else {
 523                 pCapELE->MaxRxAMPDUFactor = 3; // 2 is for 32 K and 3 is 64K
 524                 pCapELE->MPDUDensity    = 0; // no density
 525         }
 526
 527         //Supported MCS set
 528         memcpy(pCapELE->MCS, ieee->Regdot11HTOperationalRateSet, 16);
 529         if (pHT->IOTAction & HT_IOT_ACT_DISABLE_MCS15)
 530                 pCapELE->MCS[1] &= 0x7f;
 531
 532         if (pHT->IOTAction & HT_IOT_ACT_DISABLE_MCS14)
 533                 pCapELE->MCS[1] &= 0xbf;
 534
 535         if (pHT->IOTAction & HT_IOT_ACT_DISABLE_ALL_2SS)
 536                 pCapELE->MCS[1] &= 0x00;
 537
 538         /*
 539          * 2008.06.12
 540          * For RTL819X, if pairwisekey = wep/tkip, ap is ralink, we support only MCS0~7.
 541          */
 542         if (ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev)) {
 543                 int i;
 544
 545                 for (i = 1; i < 16; i++)
 546                         pCapELE->MCS[i] = 0;
 547         }
 548
 549         //Extended HT Capability Info
 550         memset(&pCapELE->ExtHTCapInfo, 0, 2);
 551
 552         //TXBF Capabilities
 553         memset(pCapELE->TxBFCap, 0, 4);
 554
 555         //Antenna Selection Capabilities
 556         pCapELE->ASCap = 0;
 557 //add 2 to give space for element ID and len when construct frames
 558         if (pHT->ePeerHTSpecVer == HT_SPEC_VER_EWC)
 559                 *len = 30 + 2;
 560         else
 561                 *len = 26 + 2;
 562
 563 //      IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA | IEEE80211_DL_HT, posHTCap, *len -2);
 564
 565         /*
 566          * Print each field in detail. Driver should not print out this message
 567          * by default
 568          */
 569 //      HTDebugHTCapability(posHTCap, (u8*)"HTConstructCapability()");
 570 }
 571
 572 /*
 573  *function:  Construct Information Element in Beacon... if HTEnable is turned on
 574  *   input:  struct ieee80211_device*   ieee
 575  *           u8*                     posHTCap //pointer to store Information Ele
 576  *           u8*                     len   //store len of
 577  *           u8                      IsEncrypt //whether encrypt, needed further
 578  *  output:  none
 579  *  return:  none
 580  *  notice:  posHTCap can't be null and be initialized before.
 581  *           Only AP and IBSS sta should do this
 582  */
 583 void HTConstructInfoElement(struct ieee80211_device *ieee, u8 *posHTInfo, u8 *len, u8 IsEncrypt)
 584 {
 585         PRT_HIGH_THROUGHPUT     pHT = ieee->pHTInfo;
 586         PHT_INFORMATION_ELE             pHTInfoEle = (PHT_INFORMATION_ELE)posHTInfo;
 587
 588         if (!posHTInfo || !pHTInfoEle) {
 589                 IEEE80211_DEBUG(IEEE80211_DL_ERR,
 590                                 "posHTInfo or pHTInfoEle can't be null in %s\n",
 591                                 __func__);
 592                 return;
 593         }
 594
 595         memset(posHTInfo, 0, *len);
 596         if ((ieee->iw_mode == IW_MODE_ADHOC) || (ieee->iw_mode == IW_MODE_MASTER)) { //ap mode is not currently supported
 597                 pHTInfoEle->ControlChl                  = ieee->current_network.channel;
 598                 pHTInfoEle->ExtChlOffset                = ((!pHT->bRegBW40MHz) ? HT_EXTCHNL_OFFSET_NO_EXT :
 599                                                                                         (ieee->current_network.channel <= 6) ?
 600                                                                                                 HT_EXTCHNL_OFFSET_UPPER : HT_EXTCHNL_OFFSET_LOWER);
 601                 pHTInfoEle->RecommemdedTxWidth  = pHT->bRegBW40MHz;
 602                 pHTInfoEle->RIFS                                        = 0;
 603                 pHTInfoEle->PSMPAccessOnly              = 0;
 604                 pHTInfoEle->SrvIntGranularity           = 0;
 605                 pHTInfoEle->OptMode                             = pHT->CurrentOpMode;
 606                 pHTInfoEle->NonGFDevPresent             = 0;
 607                 pHTInfoEle->DualBeacon                  = 0;
 608                 pHTInfoEle->SecondaryBeacon             = 0;
 609                 pHTInfoEle->LSigTxopProtectFull         = 0;
 610                 pHTInfoEle->PcoActive                           = 0;
 611                 pHTInfoEle->PcoPhase                            = 0;
 612
 613                 memset(pHTInfoEle->BasicMSC, 0, 16);
 614
 615                 *len = 22 + 2; //same above
 616         } else {
 617                 //STA should not generate High Throughput Information Element
 618                 *len = 0;
 619         }
 620         //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA | IEEE80211_DL_HT, posHTInfo, *len - 2);
 621         //HTDebugHTInfo(posHTInfo, "HTConstructInforElement");
 622 }
 623
 624 /*
 625  * According to experiment, Realtek AP to STA (based on rtl8190) may achieve
 626  * best performance if both STA and AP set limitation of aggregation size to
 627  * 32K, that is, set AMPDU density to 2 (Ref: IEEE 11n specification).
 628  * However, if Realtek STA associates to other AP, STA should set limitation of
 629  * aggregation size to 8K, otherwise, performance of traffic stream from STA to
 630  * AP will be much less than the traffic stream from AP to STA if both of the
 631  * stream runs concurrently at the same time.
 632  *
 633  *  Frame Format
 634  *  Element ID          Length          OUI             Type1           Reserved
 635  *  1 byte              1 byte          3 bytes         1 byte          1 byte
 636  *
 637  *  OUI         = 0x00, 0xe0, 0x4c,
 638  *  Type        = 0x02
 639  *  Reserved    = 0x00
 640  *
 641  *  2007.8.21 by Emily
 642  */
 643 /*
 644  *function:  Construct  Information Element in Beacon... in RT2RT condition
 645  *   input:  struct ieee80211_device*   ieee
 646  *           u8*                  posRT2RTAgg //pointer to store Information Ele
 647  *           u8*                  len   //store len
 648  *  output:  none
 649  *  return:  none
 650  *  notice:
 651  */
 652 void HTConstructRT2RTAggElement(struct ieee80211_device *ieee, u8 *posRT2RTAgg, u8 *len)
 653 {
 654         if (!posRT2RTAgg) {
 655                 IEEE80211_DEBUG(IEEE80211_DL_ERR,
 656                                 "posRT2RTAgg can't be null in %s\n",
 657                                 __func__);
 658                 return;
 659         }
 660         memset(posRT2RTAgg, 0, *len);
 661         *posRT2RTAgg++ = 0x00;
 662         *posRT2RTAgg++ = 0xe0;
 663         *posRT2RTAgg++ = 0x4c;
 664         *posRT2RTAgg++ = 0x02;
 665         *posRT2RTAgg++ = 0x01;
 666         *posRT2RTAgg = 0x10;//*posRT2RTAgg = 0x02;
 667
 668         if (ieee->bSupportRemoteWakeUp)
 669                 *posRT2RTAgg |= 0x08;//RT_HT_CAP_USE_WOW;
 670
 671         *len = 6 + 2;
 672         return;
 673 #ifdef TODO
 674 #if (HAL_CODE_BASE == RTL8192 && DEV_BUS_TYPE == USB_INTERFACE)
 675         /*
 676         //Emily. If it is required to Ask Realtek AP to send AMPDU during AES mode, enable this
 677            section of code.
 678         if(IS_UNDER_11N_AES_MODE(Adapter))
 679         {
 680                 posRT2RTAgg->octet[5] |= RT_HT_CAP_USE_AMPDU;
 681         }else
 682         {
 683                 posRT2RTAgg->octet[5] &= 0xfb;
 684         }
 685         */
 686 #else
 687         // Do Nothing
 688 #endif
 689
 690         posRT2RTAgg->Length = 6;
 691 #endif
 692 }
 693
 694 /*
 695  *function:  Pick the right Rate Adaptive table to use
 696  *   input:  struct ieee80211_device*   ieee
 697  *           u8*                      pOperateMCS //A pointer to MCS rate bitmap
 698  *  return:  always we return true
 699  *  notice:
 700  */
 701 static u8 HT_PickMCSRate(struct ieee80211_device *ieee, u8 *pOperateMCS)
 702 {
 703         if (!pOperateMCS) {
 704                 IEEE80211_DEBUG(IEEE80211_DL_ERR,
 705                                 "pOperateMCS can't be null in %s\n",
 706                                 __func__);
 707                 return false;
 708         }
 709
 710         switch (ieee->mode) {
 711         case IEEE_A:
 712         case IEEE_B:
 713         case IEEE_G:
 714                 //legacy rate routine handled at selectedrate
 715
 716                 //no MCS rate
 717                 memset(pOperateMCS, 0, 16);
 718                 break;
 719
 720         case IEEE_N_24G:        //assume CCK rate ok
 721         case IEEE_N_5G:
 722                 // Legacy part we only use 6, 5.5,2,1 for N_24G and 6 for N_5G.
 723                 // Legacy part shall be handled at SelectRateSet().
 724
 725                 //HT part
 726                 // TODO: may be different if we have different number of antenna
 727                 pOperateMCS[0] &= RATE_ADPT_1SS_MASK;   //support MCS 0~7
 728                 pOperateMCS[1] &= RATE_ADPT_2SS_MASK;
 729                 pOperateMCS[3] &= RATE_ADPT_MCS32_MASK;
 730                 break;
 731
 732         //should never reach here
 733         default:
 734                 break;
 735         }
 736
 737         return true;
 738 }
 739
 740 /*
 741  *      Description:
 742  *              This function will get the highest speed rate in input MCS set.
 743  *
 744  *      /param  Adapter                 Pionter to Adapter entity
 745  *                      pMCSRateSet             Pointer to MCS rate bitmap
 746  *                      pMCSFilter              Pointer to MCS rate filter
 747  *
 748  *      /return Highest MCS rate included in pMCSRateSet and filtered by pMCSFilter.
 749  *
 750  */
 751 /*
 752  *function:  This function will get the highest speed rate in input MCS set.
 753  *   input:  struct ieee80211_device*   ieee
 754  *           u8*                        pMCSRateSet //Pointer to MCS rate bitmap
 755  *           u8*                        pMCSFilter //Pointer to MCS rate filter
 756  *  return:  Highest MCS rate included in pMCSRateSet and filtered by pMCSFilter
 757  *  notice:
 758  */
 759 u8 HTGetHighestMCSRate(struct ieee80211_device *ieee, u8 *pMCSRateSet, u8 *pMCSFilter)
 760 {
 761         u8              i, j;
 762         u8              bitMap;
 763         u8              mcsRate = 0;
 764         u8              availableMcsRate[16];
 765
 766         if (!pMCSRateSet || !pMCSFilter) {
 767                 IEEE80211_DEBUG(IEEE80211_DL_ERR,
 768                                 "pMCSRateSet or pMCSFilter can't be null in %s\n",
 769                                 __func__);
 770                 return false;
 771         }
 772         for (i = 0; i < 16; i++)
 773                 availableMcsRate[i] = pMCSRateSet[i] & pMCSFilter[i];
 774
 775         for (i = 0; i < 16; i++) {
 776                 if (availableMcsRate[i] != 0)
 777                         break;
 778         }
 779         if (i == 16)
 780                 return false;
 781
 782         for (i = 0; i < 16; i++) {
 783                 if (availableMcsRate[i] != 0) {
 784                         bitMap = availableMcsRate[i];
 785                         for (j = 0; j < 8; j++) {
 786                                 if ((bitMap % 2) != 0) {
 787                                         if (HTMcsToDataRate(ieee, (8 * i + j)) > HTMcsToDataRate(ieee, mcsRate))
 788                                                 mcsRate = (8 * i + j);
 789                                 }
 790                                 bitMap >>= 1;
 791                         }
 792                 }
 793         }
 794         return (mcsRate | 0x80);
 795 }
 796
 797 /*
 798  * 1.Filter our operation rate set with AP's rate set
 799  * 2.shall reference channel bandwidth, STBC, Antenna number
 800  * 3.generate rate adative table for firmware
 801  * David 20060906
 802  *
 803  * \pHTSupportedCap: the connected STA's supported rate Capability element
 804  */
 805 static u8 HTFilterMCSRate(struct ieee80211_device *ieee, u8 *pSupportMCS,
 806                           u8 *pOperateMCS)
 807 {
 808         u8 i = 0;
 809
 810         // filter out operational rate set not supported by AP, the length of it is 16
 811         for (i = 0; i <= 15; i++)
 812                 pOperateMCS[i] = ieee->Regdot11HTOperationalRateSet[i] & pSupportMCS[i];
 813
 814         // TODO: adjust our operational rate set  according to our channel bandwidth, STBC and Antenna number
 815         /*
 816          * TODO: fill suggested rate adaptive rate index and give firmware info
 817          * using Tx command packet we also shall suggested the first start rate
 818          * set according to our signal strength
 819          */
 820         HT_PickMCSRate(ieee, pOperateMCS);
 821
 822         // For RTL819X, if pairwisekey = wep/tkip, we support only MCS0~7.
 823         if (ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev))
 824                 pOperateMCS[1] = 0;
 825
 826         /*
 827          * For RTL819X, we support only MCS0~15.
 828          * And also, we do not know how to use MCS32 now.
 829          */
 830         for (i = 2; i <= 15; i++)
 831                 pOperateMCS[i] = 0;
 832
 833         return true;
 834 }
 835
 836 void HTOnAssocRsp(struct ieee80211_device *ieee)
 837 {
 838         PRT_HIGH_THROUGHPUT     pHTInfo = ieee->pHTInfo;
 839         struct ht_capability_ele       *pPeerHTCap = NULL;
 840         PHT_INFORMATION_ELE             pPeerHTInfo = NULL;
 841         u16     nMaxAMSDUSize = 0;
 842         u8      *pMcsFilter = NULL;
 843
 844         static u8                               EWC11NHTCap[] = {0x00, 0x90, 0x4c, 0x33};               // For 11n EWC definition, 2007.07.17, by Emily
 845         static u8                               EWC11NHTInfo[] = {0x00, 0x90, 0x4c, 0x34};      // For 11n EWC definition, 2007.07.17, by Emily
 846
 847         if (!pHTInfo->bCurrentHTSupport) {
 848                 IEEE80211_DEBUG(IEEE80211_DL_ERR,
 849                                 "<=== %s: HT_DISABLE\n",
 850                                 __func__);
 851                 return;
 852         }
 853         IEEE80211_DEBUG(IEEE80211_DL_HT, "===> HTOnAssocRsp_wq(): HT_ENABLE\n");
 854 //      IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, pHTInfo->PeerHTCapBuf, sizeof(struct ht_capability_ele));
 855 //      IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, pHTInfo->PeerHTInfoBuf, sizeof(HT_INFORMATION_ELE));
 856
 857 //      HTDebugHTCapability(pHTInfo->PeerHTCapBuf,"HTOnAssocRsp_wq");
 858 //      HTDebugHTInfo(pHTInfo->PeerHTInfoBuf,"HTOnAssocRsp_wq");
 859         //
 860         if (!memcmp(pHTInfo->PeerHTCapBuf, EWC11NHTCap, sizeof(EWC11NHTCap)))
 861                 pPeerHTCap = (struct ht_capability_ele *)(&pHTInfo->PeerHTCapBuf[4]);
 862         else
 863                 pPeerHTCap = (struct ht_capability_ele *)(pHTInfo->PeerHTCapBuf);
 864
 865         if (!memcmp(pHTInfo->PeerHTInfoBuf, EWC11NHTInfo, sizeof(EWC11NHTInfo)))
 866                 pPeerHTInfo = (PHT_INFORMATION_ELE)(&pHTInfo->PeerHTInfoBuf[4]);
 867         else
 868                 pPeerHTInfo = (PHT_INFORMATION_ELE)(pHTInfo->PeerHTInfoBuf);
 869
 870         ////////////////////////////////////////////////////////
 871         // Configurations:
 872         ////////////////////////////////////////////////////////
 873         IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA | IEEE80211_DL_HT, pPeerHTCap, sizeof(struct ht_capability_ele));
 874 //      IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA|IEEE80211_DL_HT, pPeerHTInfo, sizeof(HT_INFORMATION_ELE));
 875         // Config Supported Channel Width setting
 876         //
 877         HTSetConnectBwMode(ieee, (enum ht_channel_width)(pPeerHTCap->ChlWidth), (enum ht_extension_chan_offset)(pPeerHTInfo->ExtChlOffset));
 878
 879         pHTInfo->bCurTxBW40MHz = (pPeerHTInfo->RecommemdedTxWidth == 1);
 880
 881         /*
 882          * Update short GI/ long GI setting
 883          *
 884          * TODO:
 885          */
 886         pHTInfo->bCurShortGI20MHz = pHTInfo->bRegShortGI20MHz &&
 887                                     (pPeerHTCap->ShortGI20Mhz == 1);
 888         pHTInfo->bCurShortGI40MHz = pHTInfo->bRegShortGI40MHz &&
 889                                    (pPeerHTCap->ShortGI40Mhz == 1);
 890
 891         /*
 892          * Config TX STBC setting
 893          *
 894          * TODO:
 895          */
 896
 897         /*
 898          * Config DSSS/CCK  mode in 40MHz mode
 899          *
 900          * TODO:
 901          */
 902         pHTInfo->bCurSuppCCK = pHTInfo->bRegSuppCCK &&
 903                                (pPeerHTCap->DssCCk == 1);
 904
 905         /*
 906          * Config and configure A-MSDU setting
 907          */
 908         pHTInfo->bCurrent_AMSDU_Support = pHTInfo->bAMSDU_Support;
 909
 910         nMaxAMSDUSize = (pPeerHTCap->MaxAMSDUSize == 0) ? 3839 : 7935;
 911
 912         if (pHTInfo->nAMSDU_MaxSize > nMaxAMSDUSize)
 913                 pHTInfo->nCurrent_AMSDU_MaxSize = nMaxAMSDUSize;
 914         else
 915                 pHTInfo->nCurrent_AMSDU_MaxSize = pHTInfo->nAMSDU_MaxSize;
 916         /*
 917          * Config A-MPDU setting
 918          */
 919         pHTInfo->bCurrentAMPDUEnable = pHTInfo->bAMPDUEnable;
 920
 921         /*
 922          * <1> Decide AMPDU Factor
 923          * By Emily
 924          */
 925         if (!pHTInfo->bRegRT2RTAggregation) {
 926                 // Decide AMPDU Factor according to protocol handshake
 927                 if (pHTInfo->AMPDU_Factor > pPeerHTCap->MaxRxAMPDUFactor)
 928                         pHTInfo->CurrentAMPDUFactor = pPeerHTCap->MaxRxAMPDUFactor;
 929                 else
 930                         pHTInfo->CurrentAMPDUFactor = pHTInfo->AMPDU_Factor;
 931         } else {
 932                 /*
 933                  * Set MPDU density to 2 to Realtek AP, and set it to 0 for others
 934                  * Replace MPDU factor declared in original association response frame format. 2007.08.20 by Emily
 935                  */
 936                 if (ieee->current_network.bssht.bdRT2RTAggregation) {
 937                         if (ieee->pairwise_key_type != KEY_TYPE_NA)
 938                                 // Realtek may set 32k in security mode and 64k for others
 939                                 pHTInfo->CurrentAMPDUFactor = pPeerHTCap->MaxRxAMPDUFactor;
 940                         else
 941                                 pHTInfo->CurrentAMPDUFactor = HT_AGG_SIZE_64K;
 942                 } else {
 943                         if (pPeerHTCap->MaxRxAMPDUFactor < HT_AGG_SIZE_32K)
 944                                 pHTInfo->CurrentAMPDUFactor = pPeerHTCap->MaxRxAMPDUFactor;
 945                         else
 946                                 pHTInfo->CurrentAMPDUFactor = HT_AGG_SIZE_32K;
 947                 }
 948         }
 949
 950         /*
 951          * <2> Set AMPDU Minimum MPDU Start Spacing
 952          * 802.11n 3.0 section 9.7d.3
 953          */
 954         if (pHTInfo->MPDU_Density > pPeerHTCap->MPDUDensity)
 955                 pHTInfo->CurrentMPDUDensity = pHTInfo->MPDU_Density;
 956         else
 957                 pHTInfo->CurrentMPDUDensity = pPeerHTCap->MPDUDensity;
 958         if (ieee->pairwise_key_type != KEY_TYPE_NA)
 959                 pHTInfo->CurrentMPDUDensity     = 7; // 8us
 960         // Force TX AMSDU
 961
 962         // Lanhsin: mark for tmp to avoid deauth by ap from  s3
 963         //if(memcmp(pMgntInfo->Bssid, NETGEAR834Bv2_BROADCOM, 3)==0)
 964         if (0) {
 965                 pHTInfo->bCurrentAMPDUEnable = false;
 966                 pHTInfo->ForcedAMSDUMode = HT_AGG_FORCE_ENABLE;
 967                 pHTInfo->ForcedAMSDUMaxSize = 7935;
 968
 969                 pHTInfo->IOTAction |=  HT_IOT_ACT_TX_USE_AMSDU_8K;
 970         }
 971
 972         // Rx Reorder Setting
 973         pHTInfo->bCurRxReorderEnable = pHTInfo->bRegRxReorderEnable;
 974
 975         /*
 976          * Filter out unsupported HT rate for this AP
 977          * Update RATR table
 978          * This is only for 8190 ,8192 or later product which using firmware to
 979          * handle rate adaptive mechanism.
 980          */
 981
 982         /*
 983          * Handle Ralink AP bad MCS rate set condition. Joseph.
 984          * This fix the bug of Ralink AP. This may be removed in the future.
 985          */
 986         if (pPeerHTCap->MCS[0] == 0)
 987                 pPeerHTCap->MCS[0] = 0xff;
 988
 989         HTFilterMCSRate(ieee, pPeerHTCap->MCS, ieee->dot11HTOperationalRateSet);
 990
 991         /*
 992          * Config MIMO Power Save setting
 993          */
 994         pHTInfo->PeerMimoPs = pPeerHTCap->MimoPwrSave;
 995         if (pHTInfo->PeerMimoPs == MIMO_PS_STATIC)
 996                 pMcsFilter = MCS_FILTER_1SS;
 997         else
 998                 pMcsFilter = MCS_FILTER_ALL;
 999         //WB add for MCS8 bug
1000 //      pMcsFilter = MCS_FILTER_1SS;
1001         ieee->HTHighestOperaRate = HTGetHighestMCSRate(ieee, ieee->dot11HTOperationalRateSet, pMcsFilter);
1002         ieee->HTCurrentOperaRate = ieee->HTHighestOperaRate;
1003
1004         /*
1005          * Config current operation mode.
1006          */
1007         pHTInfo->CurrentOpMode = pPeerHTInfo->OptMode;
1008 }
1009
1010 /*
1011  *function:  initialize HT info(struct PRT_HIGH_THROUGHPUT)
1012  *   input:  struct ieee80211_device*   ieee
1013  *  output:  none
1014  *  return:  none
1015  *  notice: This function is called when
1016  *                                  *  (1) MPInitialization Phase
1017  *                                  *  (2) Receiving of Deauthentication from AP
1018  */
1019 // TODO: Should this funciton be called when receiving of Disassociation?
1020 void HTInitializeHTInfo(struct ieee80211_device *ieee)
1021 {
1022         PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
1023
1024         /*
1025          * These parameters will be reset when receiving deauthentication packet
1026          */
1027         IEEE80211_DEBUG(IEEE80211_DL_HT, "===========>%s()\n", __func__);
1028         pHTInfo->bCurrentHTSupport = false;
1029
1030         // 40MHz channel support
1031         pHTInfo->bCurBW40MHz = false;
1032         pHTInfo->bCurTxBW40MHz = false;
1033
1034         // Short GI support
1035         pHTInfo->bCurShortGI20MHz = false;
1036         pHTInfo->bCurShortGI40MHz = false;
1037         pHTInfo->bForcedShortGI = false;
1038
1039         /*
1040          * CCK rate support
1041          * This flag is set to true to support CCK rate by default.
1042          * It will be affected by "pHTInfo->bRegSuppCCK" and AP capabilities
1043          * only when associate to 11N BSS.
1044          */
1045         pHTInfo->bCurSuppCCK = true;
1046
1047         // AMSDU related
1048         pHTInfo->bCurrent_AMSDU_Support = false;
1049         pHTInfo->nCurrent_AMSDU_MaxSize = pHTInfo->nAMSDU_MaxSize;
1050
1051         // AMPUD related
1052         pHTInfo->CurrentMPDUDensity = pHTInfo->MPDU_Density;
1053         pHTInfo->CurrentAMPDUFactor = pHTInfo->AMPDU_Factor;
1054
1055         // Initialize all of the parameters related to 11n
1056         memset(&pHTInfo->SelfHTCap, 0, sizeof(pHTInfo->SelfHTCap));
1057         memset(&pHTInfo->SelfHTInfo, 0, sizeof(pHTInfo->SelfHTInfo));
1058         memset(&pHTInfo->PeerHTCapBuf, 0, sizeof(pHTInfo->PeerHTCapBuf));
1059         memset(&pHTInfo->PeerHTInfoBuf, 0, sizeof(pHTInfo->PeerHTInfoBuf));
1060
1061         pHTInfo->bSwBwInProgress = false;
1062
1063         // Set default IEEE spec for Draft N
1064         pHTInfo->ePeerHTSpecVer = HT_SPEC_VER_IEEE;
1065
1066         // Realtek proprietary aggregation mode
1067         pHTInfo->bCurrentRT2RTAggregation = false;
1068         pHTInfo->bCurrentRT2RTLongSlotTime = false;
1069         pHTInfo->IOTPeer = 0;
1070         pHTInfo->IOTAction = 0;
1071
1072         //MCS rate initialized here
1073         {
1074                 u8 *RegHTSuppRateSets = &ieee->RegHTSuppRateSet[0];
1075
1076                 RegHTSuppRateSets[0] = 0xFF;    //support MCS 0~7
1077                 RegHTSuppRateSets[1] = 0xFF;    //support MCS 8~15
1078                 RegHTSuppRateSets[4] = 0x01;    //support MCS 32
1079         }
1080 }
1081
1082 /*
1083  *function:  initialize Bss HT structure(struct PBSS_HT)
1084  *   input:  PBSS_HT pBssHT //to be initialized
1085  *  output:  none
1086  *  return:  none
1087  *  notice: This function is called when initialize network structure
1088  */
1089 void HTInitializeBssDesc(PBSS_HT pBssHT)
1090 {
1091         pBssHT->bdSupportHT = false;
1092         memset(pBssHT->bdHTCapBuf, 0, sizeof(pBssHT->bdHTCapBuf));
1093         pBssHT->bdHTCapLen = 0;
1094         memset(pBssHT->bdHTInfoBuf, 0, sizeof(pBssHT->bdHTInfoBuf));
1095         pBssHT->bdHTInfoLen = 0;
1096
1097         pBssHT->bdHTSpecVer = HT_SPEC_VER_IEEE;
1098
1099         pBssHT->bdRT2RTAggregation = false;
1100         pBssHT->bdRT2RTLongSlotTime = false;
1101 }
1102
1103 /*
1104  *function:  initialize Bss HT structure(struct PBSS_HT)
1105  *   input:  struct ieee80211_device    *ieee
1106  *           struct ieee80211_network   *pNetwork //usually current network
1107  *                                                  we are live in
1108  *  output:  none
1109  *  return:  none
1110  *  notice: This function should ONLY be called before association
1111  */
1112 void HTResetSelfAndSavePeerSetting(struct ieee80211_device *ieee,       struct ieee80211_network *pNetwork)
1113 {
1114         PRT_HIGH_THROUGHPUT             pHTInfo = ieee->pHTInfo;
1115 //      u16                                             nMaxAMSDUSize;
1116 //      struct ht_capability_ele       *pPeerHTCap = (struct ht_capability_ele *)pNetwork->bssht.bdHTCapBuf;
1117 //      PHT_INFORMATION_ELE             pPeerHTInfo = (PHT_INFORMATION_ELE)pNetwork->bssht.bdHTInfoBuf;
1118 //      u8*     pMcsFilter;
1119         u8      bIOTAction = 0;
1120
1121         //
1122         //  Save Peer Setting before Association
1123         //
1124         IEEE80211_DEBUG(IEEE80211_DL_HT, "==============>%s()\n", __func__);
1125         /*unmark bEnableHT flag here is the same reason why unmarked in function ieee80211_softmac_new_net. WB 2008.09.10*/
1126 //      if( pHTInfo->bEnableHT &&  pNetwork->bssht.bdSupportHT)
1127         if (pNetwork->bssht.bdSupportHT) {
1128                 pHTInfo->bCurrentHTSupport = true;
1129                 pHTInfo->ePeerHTSpecVer = pNetwork->bssht.bdHTSpecVer;
1130
1131                 // Save HTCap and HTInfo information Element
1132                 if (pNetwork->bssht.bdHTCapLen > 0 &&   pNetwork->bssht.bdHTCapLen <= sizeof(pHTInfo->PeerHTCapBuf))
1133                         memcpy(pHTInfo->PeerHTCapBuf, pNetwork->bssht.bdHTCapBuf, pNetwork->bssht.bdHTCapLen);
1134
1135                 if (pNetwork->bssht.bdHTInfoLen > 0 && pNetwork->bssht.bdHTInfoLen <= sizeof(pHTInfo->PeerHTInfoBuf))
1136                         memcpy(pHTInfo->PeerHTInfoBuf, pNetwork->bssht.bdHTInfoBuf, pNetwork->bssht.bdHTInfoLen);
1137
1138                 // Check whether RT to RT aggregation mode is enabled
1139                 if (pHTInfo->bRegRT2RTAggregation) {
1140                         pHTInfo->bCurrentRT2RTAggregation = pNetwork->bssht.bdRT2RTAggregation;
1141                         pHTInfo->bCurrentRT2RTLongSlotTime = pNetwork->bssht.bdRT2RTLongSlotTime;
1142                 } else {
1143                         pHTInfo->bCurrentRT2RTAggregation = false;
1144                         pHTInfo->bCurrentRT2RTLongSlotTime = false;
1145                 }
1146
1147                 // Determine the IOT Peer Vendor.
1148                 HTIOTPeerDetermine(ieee);
1149
1150                 /*
1151                  * Decide IOT Action
1152                  * Must be called after the parameter of pHTInfo->bCurrentRT2RTAggregation is decided
1153                  */
1154                 pHTInfo->IOTAction = 0;
1155                 bIOTAction = HTIOTActIsDisableMCS14(ieee, pNetwork->bssid);
1156                 if (bIOTAction)
1157                         pHTInfo->IOTAction |= HT_IOT_ACT_DISABLE_MCS14;
1158
1159                 bIOTAction = HTIOTActIsDisableMCS15(ieee);
1160                 if (bIOTAction)
1161                         pHTInfo->IOTAction |= HT_IOT_ACT_DISABLE_MCS15;
1162
1163                 bIOTAction = HTIOTActIsDisableMCSTwoSpatialStream(ieee, pNetwork->bssid);
1164                 if (bIOTAction)
1165                         pHTInfo->IOTAction |= HT_IOT_ACT_DISABLE_ALL_2SS;
1166
1167                 bIOTAction = HTIOTActIsDisableEDCATurbo(ieee, pNetwork->bssid);
1168                 if (bIOTAction)
1169                         pHTInfo->IOTAction |= HT_IOT_ACT_DISABLE_EDCA_TURBO;
1170
1171                 bIOTAction = HTIOTActIsMgntUseCCK6M(pNetwork);
1172                 if (bIOTAction)
1173                         pHTInfo->IOTAction |= HT_IOT_ACT_MGNT_USE_CCK_6M;
1174
1175                 bIOTAction = HTIOTActIsCCDFsync(pNetwork->bssid);
1176                 if (bIOTAction)
1177                         pHTInfo->IOTAction |= HT_IOT_ACT_CDD_FSYNC;
1178         } else {
1179                 pHTInfo->bCurrentHTSupport = false;
1180                 pHTInfo->bCurrentRT2RTAggregation = false;
1181                 pHTInfo->bCurrentRT2RTLongSlotTime = false;
1182
1183                 pHTInfo->IOTAction = 0;
1184         }
1185 }
1186
1187 void HTUpdateSelfAndPeerSetting(struct ieee80211_device *ieee,  struct ieee80211_network *pNetwork)
1188 {
1189         PRT_HIGH_THROUGHPUT             pHTInfo = ieee->pHTInfo;
1190 //      struct ht_capability_ele       *pPeerHTCap = (struct ht_capability_ele *)pNetwork->bssht.bdHTCapBuf;
1191         PHT_INFORMATION_ELE             pPeerHTInfo = (PHT_INFORMATION_ELE)pNetwork->bssht.bdHTInfoBuf;
1192
1193         if (pHTInfo->bCurrentHTSupport) {
1194                 /*
1195                  * Config current operation mode.
1196                  */
1197                 if (pNetwork->bssht.bdHTInfoLen != 0)
1198                         pHTInfo->CurrentOpMode = pPeerHTInfo->OptMode;
1199
1200                 /*
1201                  * <TODO: Config according to OBSS non-HT STA present!!>
1202                  */
1203         }
1204 }
1205 EXPORT_SYMBOL(HTUpdateSelfAndPeerSetting);
1206
1207 /*
1208  *function:  check whether HT control field exists
1209  *   input:  struct ieee80211_device    *ieee
1210  *           u8*                        pFrame //coming skb->data
1211  *  output:  none
1212  *  return:  return true if HT control field exists(false otherwise)
1213  *  notice:
1214  */
1215 u8 HTCCheck(struct ieee80211_device *ieee, u8 *pFrame)
1216 {
1217         if (ieee->pHTInfo->bCurrentHTSupport) {
1218                 if ((IsQoSDataFrame(pFrame) && Frame_Order(pFrame)) == 1) {
1219                         IEEE80211_DEBUG(IEEE80211_DL_HT, "HT CONTROL FILED EXIST!!\n");
1220                         return true;
1221                 }
1222         }
1223         return false;
1224 }
1225
1226 static void HTSetConnectBwModeCallback(struct ieee80211_device *ieee)
1227 {
1228         PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
1229
1230         IEEE80211_DEBUG(IEEE80211_DL_HT, "======>%s()\n", __func__);
1231
1232         if (pHTInfo->bCurBW40MHz) {
1233                 if (pHTInfo->CurSTAExtChnlOffset == HT_EXTCHNL_OFFSET_UPPER)
1234                         ieee->set_chan(ieee->dev, ieee->current_network.channel + 2);
1235                 else if (pHTInfo->CurSTAExtChnlOffset == HT_EXTCHNL_OFFSET_LOWER)
1236                         ieee->set_chan(ieee->dev, ieee->current_network.channel - 2);
1237                 else
1238                         ieee->set_chan(ieee->dev, ieee->current_network.channel);
1239
1240                 ieee->SetBWModeHandler(ieee->dev, HT_CHANNEL_WIDTH_20_40, pHTInfo->CurSTAExtChnlOffset);
1241         } else {
1242                 ieee->set_chan(ieee->dev, ieee->current_network.channel);
1243                 ieee->SetBWModeHandler(ieee->dev, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
1244         }
1245
1246         pHTInfo->bSwBwInProgress = false;
1247 }
1248
1249 /*
1250  * This function set bandwidth mode in protocol layer.
1251  */
1252 void HTSetConnectBwMode(struct ieee80211_device *ieee, enum ht_channel_width Bandwidth, enum ht_extension_chan_offset Offset)
1253 {
1254         PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
1255 //      u32 flags = 0;
1256
1257         if (!pHTInfo->bRegBW40MHz)
1258                 return;
1259
1260         // To reduce dummy operation
1261 //      if((pHTInfo->bCurBW40MHz==false && Bandwidth==HT_CHANNEL_WIDTH_20) ||
1262 //         (pHTInfo->bCurBW40MHz==true && Bandwidth==HT_CHANNEL_WIDTH_20_40 && Offset==pHTInfo->CurSTAExtChnlOffset))
1263 //              return;
1264
1265 //      spin_lock_irqsave(&(ieee->bw_spinlock), flags);
1266         if (pHTInfo->bSwBwInProgress) {
1267 //              spin_unlock_irqrestore(&(ieee->bw_spinlock), flags);
1268                 return;
1269         }
1270         //if in half N mode, set to 20M bandwidth please 09.08.2008 WB.
1271         if (Bandwidth == HT_CHANNEL_WIDTH_20_40 && (!ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev))) {
1272                         // Handle Illegal extension channel offset!!
1273                 if (ieee->current_network.channel < 2 && Offset == HT_EXTCHNL_OFFSET_LOWER)
1274                         Offset = HT_EXTCHNL_OFFSET_NO_EXT;
1275                 if (Offset == HT_EXTCHNL_OFFSET_UPPER || Offset == HT_EXTCHNL_OFFSET_LOWER) {
1276                         pHTInfo->bCurBW40MHz = true;
1277                         pHTInfo->CurSTAExtChnlOffset = Offset;
1278                 } else {
1279                         pHTInfo->bCurBW40MHz = false;
1280                         pHTInfo->CurSTAExtChnlOffset = HT_EXTCHNL_OFFSET_NO_EXT;
1281                 }
1282         } else {
1283                 pHTInfo->bCurBW40MHz = false;
1284                 pHTInfo->CurSTAExtChnlOffset = HT_EXTCHNL_OFFSET_NO_EXT;
1285         }
1286
1287         pHTInfo->bSwBwInProgress = true;
1288
1289         /*
1290          * TODO: 2007.7.13 by Emily Wait 2000ms  in order to guarantee that
1291          * switching bandwidth is executed after scan is finished. It is a
1292          * temporal solution because software should ganrantee the last
1293          * operation of switching bandwidth is executed properlly.
1294          */
1295         HTSetConnectBwModeCallback(ieee);
1296
1297 //      spin_unlock_irqrestore(&(ieee->bw_spinlock), flags);
1298 }