drivers/staging/rtl8192e/rtl819x_HTProc.c

   1 /******************************************************************************
   2  * Copyright(c) 2008 - 2010 Realtek Corporation. All rights reserved.
   3  *
   4  * This program is distributed in the hope that it will be useful, but WITHOUT
   5  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   6  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
   7  * more details.
   8  *
   9  * You should have received a copy of the GNU General Public License along with
  10  * this program; if not, write to the Free Software Foundation, Inc.,
  11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  12  *
  13  * The full GNU General Public License is included in this distribution in the
  14  * file called LICENSE.
  15  *
  16  * Contact Information:
  17  * wlanfae <wlanfae@realtek.com>
  18 ******************************************************************************/
  19 #include "rtllib.h"
  20 #include "rtl819x_HT.h"
  21 u8 MCS_FILTER_ALL[16] = {
  22         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
  23         0xff, 0x1f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
  24 };
  25
  26 u8 MCS_FILTER_1SS[16] = {
  27         0xff, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
  28         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
  29 ;
  30
  31 u16 MCS_DATA_RATE[2][2][77] = {
  32         {{13, 26, 39, 52, 78, 104, 117, 130, 26, 52, 78, 104, 156, 208, 234,
  33          260, 39, 78, 117, 234, 312, 351, 390, 52, 104, 156, 208, 312, 416,
  34          468, 520, 0, 78, 104, 130, 117, 156, 195, 104, 130, 130, 156, 182,
  35          182, 208, 156, 195, 195, 234, 273, 273, 312, 130, 156, 181, 156,
  36          181, 208, 234, 208, 234, 260, 260, 286, 195, 234, 273, 234, 273,
  37          312, 351, 312, 351, 390, 390, 429},
  38         {14, 29, 43, 58, 87, 116, 130, 144, 29, 58, 87, 116, 173, 231, 260, 289,
  39          43, 87, 130, 173, 260, 347, 390, 433, 58, 116, 173, 231, 347, 462, 520,
  40          578, 0, 87, 116, 144, 130, 173, 217, 116, 144, 144, 173, 202, 202, 231,
  41          173, 217, 217, 260, 303, 303, 347, 144, 173, 202, 173, 202, 231, 260,
  42          231, 260, 289, 289, 318, 217, 260, 303, 260, 303, 347, 390, 347, 390,
  43          433, 433, 477} },
  44         {{27, 54, 81, 108, 162, 216, 243, 270, 54, 108, 162, 216, 324, 432, 486,
  45          540, 81, 162, 243, 324, 486, 648, 729, 810, 108, 216, 324, 432, 648,
  46          864, 972, 1080, 12, 162, 216, 270, 243, 324, 405, 216, 270, 270, 324,
  47          378, 378, 432, 324, 405, 405, 486, 567, 567, 648, 270, 324, 378, 324,
  48          378, 432, 486, 432, 486, 540, 540, 594, 405, 486, 567, 486, 567, 648,
  49          729, 648, 729, 810, 810, 891},
  50         {30, 60, 90, 120, 180, 240, 270, 300, 60, 120, 180, 240, 360, 480, 540,
  51          600, 90, 180, 270, 360, 540, 720, 810, 900, 120, 240, 360, 480, 720,
  52          960, 1080, 1200, 13, 180, 240, 300, 270, 360, 450, 240, 300, 300, 360,
  53          420, 420, 480, 360, 450, 450, 540, 630, 630, 720, 300, 360, 420, 360,
  54          420, 480, 540, 480, 540, 600, 600, 660, 450, 540, 630, 540, 630, 720,
  55          810, 720, 810, 900, 900, 990} }
  56 };
  57
  58 static u8 UNKNOWN_BORADCOM[3] = {0x00, 0x14, 0xbf};
  59
  60 static u8 LINKSYSWRT330_LINKSYSWRT300_BROADCOM[3] = {0x00, 0x1a, 0x70};
  61
  62 static u8 LINKSYSWRT350_LINKSYSWRT150_BROADCOM[3] = {0x00, 0x1d, 0x7e};
  63
  64 static u8 BELKINF5D8233V1_RALINK[3] = {0x00, 0x17, 0x3f};
  65
  66 static u8 BELKINF5D82334V3_RALINK[3] = {0x00, 0x1c, 0xdf};
  67
  68 static u8 PCI_RALINK[3] = {0x00, 0x90, 0xcc};
  69
  70 static u8 EDIMAX_RALINK[3] = {0x00, 0x0e, 0x2e};
  71
  72 static u8 AIRLINK_RALINK[3] = {0x00, 0x18, 0x02};
  73
  74 static u8 DLINK_ATHEROS_1[3] = {0x00, 0x1c, 0xf0};
  75
  76 static u8 DLINK_ATHEROS_2[3] = {0x00, 0x21, 0x91};
  77
  78 static u8 CISCO_BROADCOM[3] = {0x00, 0x17, 0x94};
  79
  80 static u8 LINKSYS_MARVELL_4400N[3] = {0x00, 0x14, 0xa4};
  81
  82 void HTUpdateDefaultSetting(struct rtllib_device *ieee)
  83 {
  84         struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
  85
  86         pHTInfo->bAcceptAddbaReq = 1;
  87
  88         pHTInfo->bRegShortGI20MHz = 1;
  89         pHTInfo->bRegShortGI40MHz = 1;
  90
  91         pHTInfo->bRegBW40MHz = 1;
  92
  93         if (pHTInfo->bRegBW40MHz)
  94                 pHTInfo->bRegSuppCCK = 1;
  95         else
  96                 pHTInfo->bRegSuppCCK = true;
  97
  98         pHTInfo->nAMSDU_MaxSize = 7935UL;
  99         pHTInfo->bAMSDU_Support = 0;
 100
 101         pHTInfo->bAMPDUEnable = 1;
 102         pHTInfo->AMPDU_Factor = 2;
 103         pHTInfo->MPDU_Density = 0;
 104
 105         pHTInfo->SelfMimoPs = 3;
 106         if (pHTInfo->SelfMimoPs == 2)
 107                 pHTInfo->SelfMimoPs = 3;
 108         ieee->bTxDisableRateFallBack = 0;
 109         ieee->bTxUseDriverAssingedRate = 0;
 110
 111         ieee->bTxEnableFwCalcDur = 1;
 112
 113         pHTInfo->bRegRT2RTAggregation = 1;
 114
 115         pHTInfo->bRegRxReorderEnable = 1;
 116         pHTInfo->RxReorderWinSize = 64;
 117         pHTInfo->RxReorderPendingTime = 30;
 118 }
 119
 120 static u16 HTMcsToDataRate(struct rtllib_device *ieee, u8 nMcsRate)
 121 {
 122         struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
 123
 124         u8      is40MHz = (pHTInfo->bCurBW40MHz) ? 1 : 0;
 125         u8      isShortGI = (pHTInfo->bCurBW40MHz) ?
 126                             ((pHTInfo->bCurShortGI40MHz) ? 1 : 0) :
 127                             ((pHTInfo->bCurShortGI20MHz) ? 1 : 0);
 128         return MCS_DATA_RATE[is40MHz][isShortGI][(nMcsRate & 0x7f)];
 129 }
 130
 131 u16  TxCountToDataRate(struct rtllib_device *ieee, u8 nDataRate)
 132 {
 133         u16     CCKOFDMRate[12] = {0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18,
 134                                    0x24, 0x30, 0x48, 0x60, 0x6c};
 135         u8      is40MHz = 0;
 136         u8      isShortGI = 0;
 137
 138         if (nDataRate < 12)
 139                 return CCKOFDMRate[nDataRate];
 140         if (nDataRate >= 0x10 && nDataRate <= 0x1f) {
 141                 is40MHz = 0;
 142                 isShortGI = 0;
 143         } else if (nDataRate >= 0x20  && nDataRate <= 0x2f) {
 144                 is40MHz = 1;
 145                 isShortGI = 0;
 146         } else if (nDataRate >= 0x30  && nDataRate <= 0x3f) {
 147                 is40MHz = 0;
 148                 isShortGI = 1;
 149         } else if (nDataRate >= 0x40  && nDataRate <= 0x4f) {
 150                 is40MHz = 1;
 151                 isShortGI = 1;
 152         }
 153         return MCS_DATA_RATE[is40MHz][isShortGI][nDataRate&0xf];
 154 }
 155
 156 bool IsHTHalfNmodeAPs(struct rtllib_device *ieee)
 157 {
 158         bool                    retValue = false;
 159         struct rtllib_network *net = &ieee->current_network;
 160
 161         if ((memcmp(net->bssid, BELKINF5D8233V1_RALINK, 3) == 0) ||
 162             (memcmp(net->bssid, BELKINF5D82334V3_RALINK, 3) == 0) ||
 163             (memcmp(net->bssid, PCI_RALINK, 3) == 0) ||
 164             (memcmp(net->bssid, EDIMAX_RALINK, 3) == 0) ||
 165             (memcmp(net->bssid, AIRLINK_RALINK, 3) == 0) ||
 166             (net->ralink_cap_exist))
 167                 retValue = true;
 168         else if (!memcmp(net->bssid, UNKNOWN_BORADCOM, 3) ||
 169                 !memcmp(net->bssid, LINKSYSWRT330_LINKSYSWRT300_BROADCOM, 3) ||
 170                 !memcmp(net->bssid, LINKSYSWRT350_LINKSYSWRT150_BROADCOM, 3) ||
 171                 (net->broadcom_cap_exist))
 172                 retValue = true;
 173         else if (net->bssht.bdRT2RTAggregation)
 174                 retValue = true;
 175         else
 176                 retValue = false;
 177
 178         return retValue;
 179 }
 180
 181 static void HTIOTPeerDetermine(struct rtllib_device *ieee)
 182 {
 183         struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
 184         struct rtllib_network *net = &ieee->current_network;
 185
 186         if (net->bssht.bdRT2RTAggregation) {
 187                 pHTInfo->IOTPeer = HT_IOT_PEER_REALTEK;
 188                 if (net->bssht.RT2RT_HT_Mode & RT_HT_CAP_USE_92SE)
 189                         pHTInfo->IOTPeer = HT_IOT_PEER_REALTEK_92SE;
 190                 if (net->bssht.RT2RT_HT_Mode & RT_HT_CAP_USE_SOFTAP)
 191                         pHTInfo->IOTPeer = HT_IOT_PEER_92U_SOFTAP;
 192         } else if (net->broadcom_cap_exist)
 193                 pHTInfo->IOTPeer = HT_IOT_PEER_BROADCOM;
 194         else if (!memcmp(net->bssid, UNKNOWN_BORADCOM, 3) ||
 195                  !memcmp(net->bssid, LINKSYSWRT330_LINKSYSWRT300_BROADCOM, 3) ||
 196                  !memcmp(net->bssid, LINKSYSWRT350_LINKSYSWRT150_BROADCOM, 3))
 197                 pHTInfo->IOTPeer = HT_IOT_PEER_BROADCOM;
 198         else if ((memcmp(net->bssid, BELKINF5D8233V1_RALINK, 3) == 0) ||
 199                  (memcmp(net->bssid, BELKINF5D82334V3_RALINK, 3) == 0) ||
 200                  (memcmp(net->bssid, PCI_RALINK, 3) == 0) ||
 201                  (memcmp(net->bssid, EDIMAX_RALINK, 3) == 0) ||
 202                  (memcmp(net->bssid, AIRLINK_RALINK, 3) == 0) ||
 203                   net->ralink_cap_exist)
 204                 pHTInfo->IOTPeer = HT_IOT_PEER_RALINK;
 205         else if ((net->atheros_cap_exist) ||
 206                 (memcmp(net->bssid, DLINK_ATHEROS_1, 3) == 0) ||
 207                 (memcmp(net->bssid, DLINK_ATHEROS_2, 3) == 0))
 208                 pHTInfo->IOTPeer = HT_IOT_PEER_ATHEROS;
 209         else if ((memcmp(net->bssid, CISCO_BROADCOM, 3) == 0) ||
 210                   net->cisco_cap_exist)
 211                 pHTInfo->IOTPeer = HT_IOT_PEER_CISCO;
 212         else if ((memcmp(net->bssid, LINKSYS_MARVELL_4400N, 3) == 0) ||
 213                   net->marvell_cap_exist)
 214                 pHTInfo->IOTPeer = HT_IOT_PEER_MARVELL;
 215         else if (net->airgo_cap_exist)
 216                 pHTInfo->IOTPeer = HT_IOT_PEER_AIRGO;
 217         else
 218                 pHTInfo->IOTPeer = HT_IOT_PEER_UNKNOWN;
 219
 220         netdev_dbg(ieee->dev, "IOTPEER: %x\n", pHTInfo->IOTPeer);
 221 }
 222
 223 static u8 HTIOTActIsDisableMCS14(struct rtllib_device *ieee, u8 *PeerMacAddr)
 224 {
 225         return 0;
 226 }
 227
 228
 229 static bool HTIOTActIsDisableMCS15(struct rtllib_device *ieee)
 230 {
 231         return false;
 232 }
 233
 234 static bool HTIOTActIsDisableMCSTwoSpatialStream(struct rtllib_device *ieee)
 235 {
 236         return false;
 237 }
 238
 239 static u8 HTIOTActIsDisableEDCATurbo(struct rtllib_device *ieee,
 240                                      u8 *PeerMacAddr)
 241 {
 242         return false;
 243 }
 244
 245 static u8 HTIOTActIsMgntUseCCK6M(struct rtllib_device *ieee,
 246                                  struct rtllib_network *network)
 247 {
 248         u8      retValue = 0;
 249
 250
 251         if (ieee->pHTInfo->IOTPeer == HT_IOT_PEER_BROADCOM)
 252                 retValue = 1;
 253
 254         return retValue;
 255 }
 256
 257 static u8 HTIOTActIsCCDFsync(struct rtllib_device *ieee)
 258 {
 259         u8      retValue = 0;
 260
 261         if (ieee->pHTInfo->IOTPeer == HT_IOT_PEER_BROADCOM)
 262                 retValue = 1;
 263         return retValue;
 264 }
 265
 266 static void HTIOTActDetermineRaFunc(struct rtllib_device *ieee, bool bPeerRx2ss)
 267 {
 268         struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
 269
 270         pHTInfo->IOTRaFunc &= HT_IOT_RAFUNC_DISABLE_ALL;
 271
 272         if (pHTInfo->IOTPeer == HT_IOT_PEER_RALINK && !bPeerRx2ss)
 273                 pHTInfo->IOTRaFunc |= HT_IOT_RAFUNC_PEER_1R;
 274
 275         if (pHTInfo->IOTAction & HT_IOT_ACT_AMSDU_ENABLE)
 276                 pHTInfo->IOTRaFunc |= HT_IOT_RAFUNC_TX_AMSDU;
 277
 278 }
 279
 280 void HTResetIOTSetting(struct rt_hi_throughput *pHTInfo)
 281 {
 282         pHTInfo->IOTAction = 0;
 283         pHTInfo->IOTPeer = HT_IOT_PEER_UNKNOWN;
 284         pHTInfo->IOTRaFunc = 0;
 285 }
 286
 287 void HTConstructCapabilityElement(struct rtllib_device *ieee, u8 *posHTCap,
 288                                   u8 *len, u8 IsEncrypt, bool bAssoc)
 289 {
 290         struct rt_hi_throughput *pHT = ieee->pHTInfo;
 291         struct ht_capab_ele *pCapELE = NULL;
 292
 293         if ((posHTCap == NULL) || (pHT == NULL)) {
 294                 netdev_warn(ieee->dev,
 295                             "%s(): posHTCap and pHTInfo are null\n", __func__);
 296                 return;
 297         }
 298         memset(posHTCap, 0, *len);
 299
 300         if ((bAssoc) && (pHT->ePeerHTSpecVer == HT_SPEC_VER_EWC)) {
 301                 u8      EWC11NHTCap[] = {0x00, 0x90, 0x4c, 0x33};
 302
 303                 memcpy(posHTCap, EWC11NHTCap, sizeof(EWC11NHTCap));
 304                 pCapELE = (struct ht_capab_ele *)&(posHTCap[4]);
 305                 *len = 30 + 2;
 306         } else {
 307                 pCapELE = (struct ht_capab_ele *)posHTCap;
 308                 *len = 26 + 2;
 309         }
 310
 311         pCapELE->AdvCoding              = 0;
 312         if (ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev))
 313                 pCapELE->ChlWidth = 0;
 314         else
 315                 pCapELE->ChlWidth = (pHT->bRegBW40MHz ? 1 : 0);
 316
 317         pCapELE->MimoPwrSave            = pHT->SelfMimoPs;
 318         pCapELE->GreenField             = 0;
 319         pCapELE->ShortGI20Mhz           = 1;
 320         pCapELE->ShortGI40Mhz           = 1;
 321
 322         pCapELE->TxSTBC                 = 1;
 323         pCapELE->RxSTBC                 = 0;
 324         pCapELE->DelayBA                = 0;
 325         pCapELE->MaxAMSDUSize = (MAX_RECEIVE_BUFFER_SIZE >= 7935) ? 1 : 0;
 326         pCapELE->DssCCk = ((pHT->bRegBW40MHz) ? (pHT->bRegSuppCCK ? 1 : 0) : 0);
 327         pCapELE->PSMP = 0;
 328         pCapELE->LSigTxopProtect = 0;
 329
 330
 331         netdev_dbg(ieee->dev,
 332                    "TX HT cap/info ele BW=%d MaxAMSDUSize:%d DssCCk:%d\n",
 333                    pCapELE->ChlWidth, pCapELE->MaxAMSDUSize, pCapELE->DssCCk);
 334
 335         if (IsEncrypt) {
 336                 pCapELE->MPDUDensity    = 7;
 337                 pCapELE->MaxRxAMPDUFactor       = 2;
 338         } else {
 339                 pCapELE->MaxRxAMPDUFactor       = 3;
 340                 pCapELE->MPDUDensity    = 0;
 341         }
 342
 343         memcpy(pCapELE->MCS, ieee->Regdot11HTOperationalRateSet, 16);
 344         memset(&pCapELE->ExtHTCapInfo, 0, 2);
 345         memset(pCapELE->TxBFCap, 0, 4);
 346
 347         pCapELE->ASCap = 0;
 348
 349         if (bAssoc) {
 350                 if (pHT->IOTAction & HT_IOT_ACT_DISABLE_MCS15)
 351                         pCapELE->MCS[1] &= 0x7f;
 352
 353                 if (pHT->IOTAction & HT_IOT_ACT_DISABLE_MCS14)
 354                         pCapELE->MCS[1] &= 0xbf;
 355
 356                 if (pHT->IOTAction & HT_IOT_ACT_DISABLE_ALL_2SS)
 357                         pCapELE->MCS[1] &= 0x00;
 358
 359                 if (pHT->IOTAction & HT_IOT_ACT_DISABLE_RX_40MHZ_SHORT_GI)
 360                         pCapELE->ShortGI40Mhz           = 0;
 361
 362                 if (ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev)) {
 363                         pCapELE->ChlWidth = 0;
 364                         pCapELE->MCS[1] = 0;
 365                 }
 366         }
 367 }
 368
 369 void HTConstructInfoElement(struct rtllib_device *ieee, u8 *posHTInfo,
 370                             u8 *len, u8 IsEncrypt)
 371 {
 372         struct rt_hi_throughput *pHT = ieee->pHTInfo;
 373         struct ht_info_ele *pHTInfoEle = (struct ht_info_ele *)posHTInfo;
 374
 375         if ((posHTInfo == NULL) || (pHTInfoEle == NULL)) {
 376                 netdev_warn(ieee->dev,
 377                             "%s(): posHTInfo and pHTInfoEle are null\n",
 378                             __func__);
 379                 return;
 380         }
 381
 382         memset(posHTInfo, 0, *len);
 383         if ((ieee->iw_mode == IW_MODE_ADHOC) ||
 384             (ieee->iw_mode == IW_MODE_MASTER)) {
 385                 pHTInfoEle->ControlChl  = ieee->current_network.channel;
 386                 pHTInfoEle->ExtChlOffset = ((pHT->bRegBW40MHz == false) ?
 387                                             HT_EXTCHNL_OFFSET_NO_EXT :
 388                                             (ieee->current_network.channel <= 6)
 389                                             ? HT_EXTCHNL_OFFSET_UPPER :
 390                                             HT_EXTCHNL_OFFSET_LOWER);
 391                 pHTInfoEle->RecommemdedTxWidth  = pHT->bRegBW40MHz;
 392                 pHTInfoEle->RIFS                        = 0;
 393                 pHTInfoEle->PSMPAccessOnly              = 0;
 394                 pHTInfoEle->SrvIntGranularity           = 0;
 395                 pHTInfoEle->OptMode                     = pHT->CurrentOpMode;
 396                 pHTInfoEle->NonGFDevPresent             = 0;
 397                 pHTInfoEle->DualBeacon                  = 0;
 398                 pHTInfoEle->SecondaryBeacon             = 0;
 399                 pHTInfoEle->LSigTxopProtectFull         = 0;
 400                 pHTInfoEle->PcoActive                   = 0;
 401                 pHTInfoEle->PcoPhase                    = 0;
 402
 403                 memset(pHTInfoEle->BasicMSC, 0, 16);
 404
 405
 406                 *len = 22 + 2;
 407
 408         } else {
 409                 *len = 0;
 410         }
 411 }
 412
 413 void HTConstructRT2RTAggElement(struct rtllib_device *ieee, u8 *posRT2RTAgg,
 414                                 u8 *len)
 415 {
 416         if (posRT2RTAgg == NULL) {
 417                 netdev_warn(ieee->dev, "%s(): posRT2RTAgg is null\n", __func__);
 418                 return;
 419         }
 420         memset(posRT2RTAgg, 0, *len);
 421         *posRT2RTAgg++ = 0x00;
 422         *posRT2RTAgg++ = 0xe0;
 423         *posRT2RTAgg++ = 0x4c;
 424         *posRT2RTAgg++ = 0x02;
 425         *posRT2RTAgg++ = 0x01;
 426
 427         *posRT2RTAgg = 0x30;
 428
 429         if (ieee->bSupportRemoteWakeUp)
 430                 *posRT2RTAgg |= RT_HT_CAP_USE_WOW;
 431
 432         *len = 6 + 2;
 433 }
 434
 435 static u8 HT_PickMCSRate(struct rtllib_device *ieee, u8 *pOperateMCS)
 436 {
 437         u8 i;
 438
 439         if (pOperateMCS == NULL) {
 440                 netdev_warn(ieee->dev, "%s(): pOperateMCS is null\n", __func__);
 441                 return false;
 442         }
 443
 444         switch (ieee->mode) {
 445         case IEEE_A:
 446         case IEEE_B:
 447         case IEEE_G:
 448                 for (i = 0; i <= 15; i++)
 449                         pOperateMCS[i] = 0;
 450                 break;
 451         case IEEE_N_24G:
 452         case IEEE_N_5G:
 453                 pOperateMCS[0] &= RATE_ADPT_1SS_MASK;
 454                 pOperateMCS[1] &= RATE_ADPT_2SS_MASK;
 455                 pOperateMCS[3] &= RATE_ADPT_MCS32_MASK;
 456                 break;
 457         default:
 458                 break;
 459
 460         }
 461
 462         return true;
 463 }
 464
 465 u8 HTGetHighestMCSRate(struct rtllib_device *ieee, u8 *pMCSRateSet,
 466                        u8 *pMCSFilter)
 467 {
 468         u8              i, j;
 469         u8              bitMap;
 470         u8              mcsRate = 0;
 471         u8              availableMcsRate[16];
 472
 473         if (pMCSRateSet == NULL || pMCSFilter == NULL) {
 474                 netdev_warn(ieee->dev,
 475                             "%s(): pMCSRateSet and pMCSFilter are null\n",
 476                             __func__);
 477                 return false;
 478         }
 479         for (i = 0; i < 16; i++)
 480                 availableMcsRate[i] = pMCSRateSet[i] & pMCSFilter[i];
 481
 482         for (i = 0; i < 16; i++) {
 483                 if (availableMcsRate[i] != 0)
 484                         break;
 485         }
 486         if (i == 16)
 487                 return false;
 488
 489         for (i = 0; i < 16; i++) {
 490                 if (availableMcsRate[i] != 0) {
 491                         bitMap = availableMcsRate[i];
 492                         for (j = 0; j < 8; j++) {
 493                                 if ((bitMap%2) != 0) {
 494                                         if (HTMcsToDataRate(ieee, (8*i+j)) >
 495                                             HTMcsToDataRate(ieee, mcsRate))
 496                                                 mcsRate = (8*i+j);
 497                                 }
 498                                 bitMap >>= 1;
 499                         }
 500                 }
 501         }
 502         return mcsRate | 0x80;
 503 }
 504
 505 static u8 HTFilterMCSRate(struct rtllib_device *ieee, u8 *pSupportMCS,
 506                           u8 *pOperateMCS)
 507 {
 508
 509         u8 i;
 510
 511         for (i = 0; i <= 15; i++)
 512                 pOperateMCS[i] = ieee->Regdot11TxHTOperationalRateSet[i] &
 513                                  pSupportMCS[i];
 514
 515         HT_PickMCSRate(ieee, pOperateMCS);
 516
 517         if (ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev))
 518                 pOperateMCS[1] = 0;
 519
 520         for (i = 2; i <= 15; i++)
 521                 pOperateMCS[i] = 0;
 522
 523         return true;
 524 }
 525
 526 void HTSetConnectBwMode(struct rtllib_device *ieee,
 527                         enum ht_channel_width Bandwidth,
 528                         enum ht_extchnl_offset Offset);
 529
 530 void HTOnAssocRsp(struct rtllib_device *ieee)
 531 {
 532         struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
 533         struct ht_capab_ele *pPeerHTCap = NULL;
 534         struct ht_info_ele *pPeerHTInfo = NULL;
 535         u16 nMaxAMSDUSize = 0;
 536         u8 *pMcsFilter = NULL;
 537
 538         static u8 EWC11NHTCap[] = {0x00, 0x90, 0x4c, 0x33};
 539         static u8 EWC11NHTInfo[] = {0x00, 0x90, 0x4c, 0x34};
 540
 541         if (pHTInfo->bCurrentHTSupport == false) {
 542                 netdev_warn(ieee->dev, "%s(): HT_DISABLE\n", __func__);
 543                 return;
 544         }
 545         netdev_dbg(ieee->dev, "%s(): HT_ENABLE\n", __func__);
 546
 547         if (!memcmp(pHTInfo->PeerHTCapBuf, EWC11NHTCap, sizeof(EWC11NHTCap)))
 548                 pPeerHTCap = (struct ht_capab_ele *)(&pHTInfo->PeerHTCapBuf[4]);
 549         else
 550                 pPeerHTCap = (struct ht_capab_ele *)(pHTInfo->PeerHTCapBuf);
 551
 552         if (!memcmp(pHTInfo->PeerHTInfoBuf, EWC11NHTInfo, sizeof(EWC11NHTInfo)))
 553                 pPeerHTInfo = (struct ht_info_ele *)
 554                              (&pHTInfo->PeerHTInfoBuf[4]);
 555         else
 556                 pPeerHTInfo = (struct ht_info_ele *)(pHTInfo->PeerHTInfoBuf);
 557
 558
 559 #ifdef VERBOSE_DEBUG
 560         print_hex_dump_bytes("HTOnAssocRsp(): ", DUMP_PREFIX_NONE,
 561                              pPeerHTCap, sizeof(struct ht_capab_ele));
 562 #endif
 563         HTSetConnectBwMode(ieee, (enum ht_channel_width)(pPeerHTCap->ChlWidth),
 564                           (enum ht_extchnl_offset)(pPeerHTInfo->ExtChlOffset));
 565         pHTInfo->bCurTxBW40MHz = ((pPeerHTInfo->RecommemdedTxWidth == 1) ?
 566                                  true : false);
 567
 568         pHTInfo->bCurShortGI20MHz = ((pHTInfo->bRegShortGI20MHz) ?
 569                                     ((pPeerHTCap->ShortGI20Mhz == 1) ?
 570                                     true : false) : false);
 571         pHTInfo->bCurShortGI40MHz = ((pHTInfo->bRegShortGI40MHz) ?
 572                                      ((pPeerHTCap->ShortGI40Mhz == 1) ?
 573                                      true : false) : false);
 574
 575         pHTInfo->bCurSuppCCK = ((pHTInfo->bRegSuppCCK) ?
 576                                ((pPeerHTCap->DssCCk == 1) ? true :
 577                                false) : false);
 578
 579
 580         pHTInfo->bCurrent_AMSDU_Support = pHTInfo->bAMSDU_Support;
 581
 582         nMaxAMSDUSize = (pPeerHTCap->MaxAMSDUSize == 0) ? 3839 : 7935;
 583
 584         if (pHTInfo->nAMSDU_MaxSize > nMaxAMSDUSize)
 585                 pHTInfo->nCurrent_AMSDU_MaxSize = nMaxAMSDUSize;
 586         else
 587                 pHTInfo->nCurrent_AMSDU_MaxSize = pHTInfo->nAMSDU_MaxSize;
 588
 589         pHTInfo->bCurrentAMPDUEnable = pHTInfo->bAMPDUEnable;
 590         if (ieee->rtllib_ap_sec_type &&
 591            (ieee->rtllib_ap_sec_type(ieee)&(SEC_ALG_WEP|SEC_ALG_TKIP))) {
 592                 if ((pHTInfo->IOTPeer == HT_IOT_PEER_ATHEROS) ||
 593                                 (pHTInfo->IOTPeer == HT_IOT_PEER_UNKNOWN))
 594                         pHTInfo->bCurrentAMPDUEnable = false;
 595         }
 596
 597         if (!pHTInfo->bRegRT2RTAggregation) {
 598                 if (pHTInfo->AMPDU_Factor > pPeerHTCap->MaxRxAMPDUFactor)
 599                         pHTInfo->CurrentAMPDUFactor =
 600                                                  pPeerHTCap->MaxRxAMPDUFactor;
 601                 else
 602                         pHTInfo->CurrentAMPDUFactor = pHTInfo->AMPDU_Factor;
 603
 604         } else {
 605                 if (ieee->current_network.bssht.bdRT2RTAggregation) {
 606                         if (ieee->pairwise_key_type != KEY_TYPE_NA)
 607                                 pHTInfo->CurrentAMPDUFactor =
 608                                                  pPeerHTCap->MaxRxAMPDUFactor;
 609                         else
 610                                 pHTInfo->CurrentAMPDUFactor = HT_AGG_SIZE_64K;
 611                 } else {
 612                         if (pPeerHTCap->MaxRxAMPDUFactor < HT_AGG_SIZE_32K)
 613                                 pHTInfo->CurrentAMPDUFactor =
 614                                                  pPeerHTCap->MaxRxAMPDUFactor;
 615                         else
 616                                 pHTInfo->CurrentAMPDUFactor = HT_AGG_SIZE_32K;
 617                 }
 618         }
 619         if (pHTInfo->MPDU_Density > pPeerHTCap->MPDUDensity)
 620                 pHTInfo->CurrentMPDUDensity = pHTInfo->MPDU_Density;
 621         else
 622                 pHTInfo->CurrentMPDUDensity = pPeerHTCap->MPDUDensity;
 623         if (pHTInfo->IOTAction & HT_IOT_ACT_TX_USE_AMSDU_8K) {
 624                 pHTInfo->bCurrentAMPDUEnable = false;
 625                 pHTInfo->ForcedAMSDUMode = HT_AGG_FORCE_ENABLE;
 626                 pHTInfo->ForcedAMSDUMaxSize = 7935;
 627         }
 628         pHTInfo->bCurRxReorderEnable = pHTInfo->bRegRxReorderEnable;
 629
 630         if (pPeerHTCap->MCS[0] == 0)
 631                 pPeerHTCap->MCS[0] = 0xff;
 632
 633         HTIOTActDetermineRaFunc(ieee, ((pPeerHTCap->MCS[1]) != 0));
 634
 635         HTFilterMCSRate(ieee, pPeerHTCap->MCS, ieee->dot11HTOperationalRateSet);
 636
 637         pHTInfo->PeerMimoPs = pPeerHTCap->MimoPwrSave;
 638         if (pHTInfo->PeerMimoPs == MIMO_PS_STATIC)
 639                 pMcsFilter = MCS_FILTER_1SS;
 640         else
 641                 pMcsFilter = MCS_FILTER_ALL;
 642         ieee->HTHighestOperaRate = HTGetHighestMCSRate(ieee,
 643                                    ieee->dot11HTOperationalRateSet, pMcsFilter);
 644         ieee->HTCurrentOperaRate = ieee->HTHighestOperaRate;
 645
 646         pHTInfo->CurrentOpMode = pPeerHTInfo->OptMode;
 647 }
 648
 649 void HTInitializeHTInfo(struct rtllib_device *ieee)
 650 {
 651         struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
 652
 653         netdev_vdbg(ieee->dev, "%s()\n", __func__);
 654         pHTInfo->bCurrentHTSupport = false;
 655
 656         pHTInfo->bCurBW40MHz = false;
 657         pHTInfo->bCurTxBW40MHz = false;
 658
 659         pHTInfo->bCurShortGI20MHz = false;
 660         pHTInfo->bCurShortGI40MHz = false;
 661         pHTInfo->bForcedShortGI = false;
 662
 663         pHTInfo->bCurSuppCCK = true;
 664
 665         pHTInfo->bCurrent_AMSDU_Support = false;
 666         pHTInfo->nCurrent_AMSDU_MaxSize = pHTInfo->nAMSDU_MaxSize;
 667         pHTInfo->CurrentMPDUDensity = pHTInfo->MPDU_Density;
 668         pHTInfo->CurrentAMPDUFactor = pHTInfo->AMPDU_Factor;
 669
 670         memset((void *)(&(pHTInfo->SelfHTCap)), 0,
 671                 sizeof(pHTInfo->SelfHTCap));
 672         memset((void *)(&(pHTInfo->SelfHTInfo)), 0,
 673                 sizeof(pHTInfo->SelfHTInfo));
 674         memset((void *)(&(pHTInfo->PeerHTCapBuf)), 0,
 675                 sizeof(pHTInfo->PeerHTCapBuf));
 676         memset((void *)(&(pHTInfo->PeerHTInfoBuf)), 0,
 677                 sizeof(pHTInfo->PeerHTInfoBuf));
 678
 679         pHTInfo->bSwBwInProgress = false;
 680
 681         pHTInfo->ePeerHTSpecVer = HT_SPEC_VER_IEEE;
 682
 683         pHTInfo->bCurrentRT2RTAggregation = false;
 684         pHTInfo->bCurrentRT2RTLongSlotTime = false;
 685         pHTInfo->RT2RT_HT_Mode = (enum rt_ht_capability)0;
 686
 687         pHTInfo->IOTPeer = 0;
 688         pHTInfo->IOTAction = 0;
 689         pHTInfo->IOTRaFunc = 0;
 690
 691         {
 692                 u8 *RegHTSuppRateSets = &(ieee->RegHTSuppRateSet[0]);
 693
 694                 RegHTSuppRateSets[0] = 0xFF;
 695                 RegHTSuppRateSets[1] = 0xFF;
 696                 RegHTSuppRateSets[4] = 0x01;
 697         }
 698 }
 699
 700 void HTInitializeBssDesc(struct bss_ht *pBssHT)
 701 {
 702
 703         pBssHT->bdSupportHT = false;
 704         memset(pBssHT->bdHTCapBuf, 0, sizeof(pBssHT->bdHTCapBuf));
 705         pBssHT->bdHTCapLen = 0;
 706         memset(pBssHT->bdHTInfoBuf, 0, sizeof(pBssHT->bdHTInfoBuf));
 707         pBssHT->bdHTInfoLen = 0;
 708
 709         pBssHT->bdHTSpecVer = HT_SPEC_VER_IEEE;
 710
 711         pBssHT->bdRT2RTAggregation = false;
 712         pBssHT->bdRT2RTLongSlotTime = false;
 713         pBssHT->RT2RT_HT_Mode = (enum rt_ht_capability)0;
 714 }
 715
 716 void HTResetSelfAndSavePeerSetting(struct rtllib_device *ieee,
 717                                    struct rtllib_network *pNetwork)
 718 {
 719         struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
 720         u8      bIOTAction = 0;
 721
 722         netdev_vdbg(ieee->dev, "%s()\n", __func__);
 723         /* unmark bEnableHT flag here is the same reason why unmarked in
 724          * function rtllib_softmac_new_net. WB 2008.09.10
 725          */
 726         if (pNetwork->bssht.bdSupportHT) {
 727                 pHTInfo->bCurrentHTSupport = true;
 728                 pHTInfo->ePeerHTSpecVer = pNetwork->bssht.bdHTSpecVer;
 729
 730                 if (pNetwork->bssht.bdHTCapLen > 0 &&
 731                     pNetwork->bssht.bdHTCapLen <= sizeof(pHTInfo->PeerHTCapBuf))
 732                         memcpy(pHTInfo->PeerHTCapBuf,
 733                                pNetwork->bssht.bdHTCapBuf,
 734                                pNetwork->bssht.bdHTCapLen);
 735
 736                 if (pNetwork->bssht.bdHTInfoLen > 0 &&
 737                     pNetwork->bssht.bdHTInfoLen <=
 738                     sizeof(pHTInfo->PeerHTInfoBuf))
 739                         memcpy(pHTInfo->PeerHTInfoBuf,
 740                                pNetwork->bssht.bdHTInfoBuf,
 741                                pNetwork->bssht.bdHTInfoLen);
 742
 743                 if (pHTInfo->bRegRT2RTAggregation) {
 744                         pHTInfo->bCurrentRT2RTAggregation =
 745                                  pNetwork->bssht.bdRT2RTAggregation;
 746                         pHTInfo->bCurrentRT2RTLongSlotTime =
 747                                  pNetwork->bssht.bdRT2RTLongSlotTime;
 748                         pHTInfo->RT2RT_HT_Mode = pNetwork->bssht.RT2RT_HT_Mode;
 749                 } else {
 750                         pHTInfo->bCurrentRT2RTAggregation = false;
 751                         pHTInfo->bCurrentRT2RTLongSlotTime = false;
 752                         pHTInfo->RT2RT_HT_Mode = (enum rt_ht_capability)0;
 753                 }
 754
 755                 HTIOTPeerDetermine(ieee);
 756
 757                 pHTInfo->IOTAction = 0;
 758                 bIOTAction = HTIOTActIsDisableMCS14(ieee, pNetwork->bssid);
 759                 if (bIOTAction)
 760                         pHTInfo->IOTAction |= HT_IOT_ACT_DISABLE_MCS14;
 761
 762                 bIOTAction = HTIOTActIsDisableMCS15(ieee);
 763                 if (bIOTAction)
 764                         pHTInfo->IOTAction |= HT_IOT_ACT_DISABLE_MCS15;
 765
 766                 bIOTAction = HTIOTActIsDisableMCSTwoSpatialStream(ieee);
 767                 if (bIOTAction)
 768                         pHTInfo->IOTAction |= HT_IOT_ACT_DISABLE_ALL_2SS;
 769
 770
 771                 bIOTAction = HTIOTActIsDisableEDCATurbo(ieee, pNetwork->bssid);
 772                 if (bIOTAction)
 773                         pHTInfo->IOTAction |= HT_IOT_ACT_DISABLE_EDCA_TURBO;
 774
 775                 bIOTAction = HTIOTActIsMgntUseCCK6M(ieee, pNetwork);
 776                 if (bIOTAction)
 777                         pHTInfo->IOTAction |= HT_IOT_ACT_MGNT_USE_CCK_6M;
 778                 bIOTAction = HTIOTActIsCCDFsync(ieee);
 779                 if (bIOTAction)
 780                         pHTInfo->IOTAction |= HT_IOT_ACT_CDD_FSYNC;
 781         } else {
 782                 pHTInfo->bCurrentHTSupport = false;
 783                 pHTInfo->bCurrentRT2RTAggregation = false;
 784                 pHTInfo->bCurrentRT2RTLongSlotTime = false;
 785                 pHTInfo->RT2RT_HT_Mode = (enum rt_ht_capability)0;
 786
 787                 pHTInfo->IOTAction = 0;
 788                 pHTInfo->IOTRaFunc = 0;
 789         }
 790 }
 791
 792 void HT_update_self_and_peer_setting(struct rtllib_device *ieee,
 793                                      struct rtllib_network *pNetwork)
 794 {
 795         struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
 796         struct ht_info_ele *pPeerHTInfo =
 797                  (struct ht_info_ele *)pNetwork->bssht.bdHTInfoBuf;
 798
 799         if (pHTInfo->bCurrentHTSupport) {
 800                 if (pNetwork->bssht.bdHTInfoLen != 0)
 801                         pHTInfo->CurrentOpMode = pPeerHTInfo->OptMode;
 802         }
 803 }
 804 EXPORT_SYMBOL(HT_update_self_and_peer_setting);
 805
 806 void HTUseDefaultSetting(struct rtllib_device *ieee)
 807 {
 808         struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
 809
 810         if (pHTInfo->bEnableHT) {
 811                 pHTInfo->bCurrentHTSupport = true;
 812                 pHTInfo->bCurSuppCCK = pHTInfo->bRegSuppCCK;
 813
 814                 pHTInfo->bCurBW40MHz = pHTInfo->bRegBW40MHz;
 815                 pHTInfo->bCurShortGI20MHz = pHTInfo->bRegShortGI20MHz;
 816
 817                 pHTInfo->bCurShortGI40MHz = pHTInfo->bRegShortGI40MHz;
 818
 819                 if (ieee->iw_mode == IW_MODE_ADHOC)
 820                         ieee->current_network.qos_data.active =
 821                                  ieee->current_network.qos_data.supported;
 822                 pHTInfo->bCurrent_AMSDU_Support = pHTInfo->bAMSDU_Support;
 823                 pHTInfo->nCurrent_AMSDU_MaxSize = pHTInfo->nAMSDU_MaxSize;
 824
 825                 pHTInfo->bCurrentAMPDUEnable = pHTInfo->bAMPDUEnable;
 826                 pHTInfo->CurrentAMPDUFactor = pHTInfo->AMPDU_Factor;
 827
 828                 pHTInfo->CurrentMPDUDensity = pHTInfo->CurrentMPDUDensity;
 829
 830                 HTFilterMCSRate(ieee, ieee->Regdot11TxHTOperationalRateSet,
 831                                 ieee->dot11HTOperationalRateSet);
 832                 ieee->HTHighestOperaRate = HTGetHighestMCSRate(ieee,
 833                                            ieee->dot11HTOperationalRateSet,
 834                                            MCS_FILTER_ALL);
 835                 ieee->HTCurrentOperaRate = ieee->HTHighestOperaRate;
 836
 837         } else {
 838                 pHTInfo->bCurrentHTSupport = false;
 839         }
 840 }
 841
 842 u8 HTCCheck(struct rtllib_device *ieee, u8 *pFrame)
 843 {
 844         if (ieee->pHTInfo->bCurrentHTSupport) {
 845                 if ((IsQoSDataFrame(pFrame) && Frame_Order(pFrame)) == 1) {
 846                         netdev_dbg(ieee->dev, "HT CONTROL FILED EXIST!!\n");
 847                         return true;
 848                 }
 849         }
 850         return false;
 851 }
 852
 853 static void HTSetConnectBwModeCallback(struct rtllib_device *ieee)
 854 {
 855         struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
 856
 857         netdev_vdbg(ieee->dev, "%s()\n", __func__);
 858
 859         if (pHTInfo->bCurBW40MHz) {
 860                 if (pHTInfo->CurSTAExtChnlOffset == HT_EXTCHNL_OFFSET_UPPER)
 861                         ieee->set_chan(ieee->dev,
 862                                        ieee->current_network.channel + 2);
 863                 else if (pHTInfo->CurSTAExtChnlOffset ==
 864                          HT_EXTCHNL_OFFSET_LOWER)
 865                         ieee->set_chan(ieee->dev,
 866                                        ieee->current_network.channel - 2);
 867                 else
 868                         ieee->set_chan(ieee->dev,
 869                                        ieee->current_network.channel);
 870
 871                 ieee->SetBWModeHandler(ieee->dev, HT_CHANNEL_WIDTH_20_40,
 872                                        pHTInfo->CurSTAExtChnlOffset);
 873         } else {
 874                 ieee->set_chan(ieee->dev, ieee->current_network.channel);
 875                 ieee->SetBWModeHandler(ieee->dev, HT_CHANNEL_WIDTH_20,
 876                                        HT_EXTCHNL_OFFSET_NO_EXT);
 877         }
 878
 879         pHTInfo->bSwBwInProgress = false;
 880 }
 881
 882 void HTSetConnectBwMode(struct rtllib_device *ieee,
 883                         enum ht_channel_width Bandwidth,
 884                         enum ht_extchnl_offset Offset)
 885 {
 886         struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
 887
 888         if (pHTInfo->bRegBW40MHz == false)
 889                 return;
 890
 891         if (ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev))
 892                 Bandwidth = HT_CHANNEL_WIDTH_20;
 893
 894         if (pHTInfo->bSwBwInProgress) {
 895                 pr_info("%s: bSwBwInProgress!!\n", __func__);
 896                 return;
 897         }
 898         if (Bandwidth == HT_CHANNEL_WIDTH_20_40) {
 899                 if (ieee->current_network.channel < 2 &&
 900                     Offset == HT_EXTCHNL_OFFSET_LOWER)
 901                         Offset = HT_EXTCHNL_OFFSET_NO_EXT;
 902                 if (Offset == HT_EXTCHNL_OFFSET_UPPER ||
 903                     Offset == HT_EXTCHNL_OFFSET_LOWER) {
 904                         pHTInfo->bCurBW40MHz = true;
 905                         pHTInfo->CurSTAExtChnlOffset = Offset;
 906                 } else {
 907                         pHTInfo->bCurBW40MHz = false;
 908                         pHTInfo->CurSTAExtChnlOffset = HT_EXTCHNL_OFFSET_NO_EXT;
 909                 }
 910         } else {
 911                 pHTInfo->bCurBW40MHz = false;
 912                 pHTInfo->CurSTAExtChnlOffset = HT_EXTCHNL_OFFSET_NO_EXT;
 913         }
 914
 915         pr_info("%s():pHTInfo->bCurBW40MHz:%x\n", __func__,
 916                pHTInfo->bCurBW40MHz);
 917
 918         pHTInfo->bSwBwInProgress = true;
 919
 920         HTSetConnectBwModeCallback(ieee);
 921 }