drivers/staging/rtl8192e/rtl819x_TSProc.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 <linux/etherdevice.h>
  21 #include "rtl819x_TS.h"
  22
  23 static void TsSetupTimeOut(unsigned long data)
  24 {
  25 }
  26
  27 static void TsInactTimeout(unsigned long data)
  28 {
  29 }
  30
  31 static void RxPktPendingTimeout(unsigned long data)
  32 {
  33         struct rx_ts_record *pRxTs = (struct rx_ts_record *)data;
  34         struct rtllib_device *ieee = container_of(pRxTs, struct rtllib_device,
  35                                                   RxTsRecord[pRxTs->num]);
  36
  37         struct rx_reorder_entry *pReorderEntry = NULL;
  38
  39         unsigned long flags = 0;
  40         u8 index = 0;
  41         bool bPktInBuf = false;
  42
  43         spin_lock_irqsave(&(ieee->reorder_spinlock), flags);
  44         if (pRxTs->RxTimeoutIndicateSeq != 0xffff) {
  45                 while (!list_empty(&pRxTs->RxPendingPktList)) {
  46                         pReorderEntry = (struct rx_reorder_entry *)
  47                                         list_entry(pRxTs->RxPendingPktList.prev,
  48                                         struct rx_reorder_entry, List);
  49                         if (index == 0)
  50                                 pRxTs->RxIndicateSeq = pReorderEntry->SeqNum;
  51
  52                         if (SN_LESS(pReorderEntry->SeqNum, pRxTs->RxIndicateSeq) ||
  53                                 SN_EQUAL(pReorderEntry->SeqNum, pRxTs->RxIndicateSeq)) {
  54                                 list_del_init(&pReorderEntry->List);
  55
  56                                 if (SN_EQUAL(pReorderEntry->SeqNum,
  57                                     pRxTs->RxIndicateSeq))
  58                                         pRxTs->RxIndicateSeq =
  59                                               (pRxTs->RxIndicateSeq + 1) % 4096;
  60
  61                                 RTLLIB_DEBUG(RTLLIB_DL_REORDER,
  62                                              "%s(): Indicate SeqNum: %d\n",
  63                                              __func__, pReorderEntry->SeqNum);
  64                                 ieee->stats_IndicateArray[index] =
  65                                                          pReorderEntry->prxb;
  66                                 index++;
  67
  68                                 list_add_tail(&pReorderEntry->List,
  69                                               &ieee->RxReorder_Unused_List);
  70                         } else {
  71                                 bPktInBuf = true;
  72                                 break;
  73                         }
  74                 }
  75         }
  76
  77         if (index > 0) {
  78                 pRxTs->RxTimeoutIndicateSeq = 0xffff;
  79
  80                 if (index > REORDER_WIN_SIZE) {
  81                         RTLLIB_DEBUG(RTLLIB_DL_ERR,
  82                                      "RxReorderIndicatePacket(): Rx Reorder struct buffer full!!\n");
  83                         spin_unlock_irqrestore(&(ieee->reorder_spinlock),
  84                                                flags);
  85                         return;
  86                 }
  87                 rtllib_indicate_packets(ieee, ieee->stats_IndicateArray, index);
  88                 bPktInBuf = false;
  89         }
  90
  91         if (bPktInBuf && (pRxTs->RxTimeoutIndicateSeq == 0xffff)) {
  92                 pRxTs->RxTimeoutIndicateSeq = pRxTs->RxIndicateSeq;
  93                 mod_timer(&pRxTs->RxPktPendingTimer,  jiffies +
  94                           msecs_to_jiffies(ieee->pHTInfo->RxReorderPendingTime));
  95         }
  96         spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
  97 }
  98
  99 static void TsAddBaProcess(unsigned long data)
 100 {
 101         struct tx_ts_record *pTxTs = (struct tx_ts_record *)data;
 102         u8 num = pTxTs->num;
 103         struct rtllib_device *ieee = container_of(pTxTs, struct rtllib_device,
 104                                      TxTsRecord[num]);
 105
 106         TsInitAddBA(ieee, pTxTs, BA_POLICY_IMMEDIATE, false);
 107         RTLLIB_DEBUG(RTLLIB_DL_BA,
 108                      "TsAddBaProcess(): ADDBA Req is started!!\n");
 109 }
 110
 111 static void ResetTsCommonInfo(struct ts_common_info *pTsCommonInfo)
 112 {
 113         memset(pTsCommonInfo->Addr, 0, 6);
 114         memset(&pTsCommonInfo->TSpec, 0, sizeof(union tspec_body));
 115         memset(&pTsCommonInfo->TClass, 0, sizeof(union qos_tclas)*TCLAS_NUM);
 116         pTsCommonInfo->TClasProc = 0;
 117         pTsCommonInfo->TClasNum = 0;
 118 }
 119
 120 static void ResetTxTsEntry(struct tx_ts_record *pTS)
 121 {
 122         ResetTsCommonInfo(&pTS->TsCommonInfo);
 123         pTS->TxCurSeq = 0;
 124         pTS->bAddBaReqInProgress = false;
 125         pTS->bAddBaReqDelayed = false;
 126         pTS->bUsingBa = false;
 127         pTS->bDisable_AddBa = false;
 128         ResetBaEntry(&pTS->TxAdmittedBARecord);
 129         ResetBaEntry(&pTS->TxPendingBARecord);
 130 }
 131
 132 static void ResetRxTsEntry(struct rx_ts_record *pTS)
 133 {
 134         ResetTsCommonInfo(&pTS->TsCommonInfo);
 135         pTS->RxIndicateSeq = 0xffff;
 136         pTS->RxTimeoutIndicateSeq = 0xffff;
 137         ResetBaEntry(&pTS->RxAdmittedBARecord);
 138 }
 139
 140 void TSInitialize(struct rtllib_device *ieee)
 141 {
 142         struct tx_ts_record *pTxTS  = ieee->TxTsRecord;
 143         struct rx_ts_record *pRxTS  = ieee->RxTsRecord;
 144         struct rx_reorder_entry *pRxReorderEntry = ieee->RxReorderEntry;
 145         u8                              count = 0;
 146
 147         RTLLIB_DEBUG(RTLLIB_DL_TS, "==========>%s()\n", __func__);
 148         INIT_LIST_HEAD(&ieee->Tx_TS_Admit_List);
 149         INIT_LIST_HEAD(&ieee->Tx_TS_Pending_List);
 150         INIT_LIST_HEAD(&ieee->Tx_TS_Unused_List);
 151
 152         for (count = 0; count < TOTAL_TS_NUM; count++) {
 153                 pTxTS->num = count;
 154                 _setup_timer(&pTxTS->TsCommonInfo.SetupTimer,
 155                             TsSetupTimeOut,
 156                             (unsigned long) pTxTS);
 157
 158                 _setup_timer(&pTxTS->TsCommonInfo.InactTimer,
 159                             TsInactTimeout,
 160                             (unsigned long) pTxTS);
 161
 162                 _setup_timer(&pTxTS->TsAddBaTimer,
 163                             TsAddBaProcess,
 164                             (unsigned long) pTxTS);
 165
 166                 _setup_timer(&pTxTS->TxPendingBARecord.Timer,
 167                             BaSetupTimeOut,
 168                             (unsigned long) pTxTS);
 169                 _setup_timer(&pTxTS->TxAdmittedBARecord.Timer,
 170                             TxBaInactTimeout,
 171                             (unsigned long) pTxTS);
 172
 173                 ResetTxTsEntry(pTxTS);
 174                 list_add_tail(&pTxTS->TsCommonInfo.List,
 175                                 &ieee->Tx_TS_Unused_List);
 176                 pTxTS++;
 177         }
 178
 179         INIT_LIST_HEAD(&ieee->Rx_TS_Admit_List);
 180         INIT_LIST_HEAD(&ieee->Rx_TS_Pending_List);
 181         INIT_LIST_HEAD(&ieee->Rx_TS_Unused_List);
 182         for (count = 0; count < TOTAL_TS_NUM; count++) {
 183                 pRxTS->num = count;
 184                 INIT_LIST_HEAD(&pRxTS->RxPendingPktList);
 185
 186                 _setup_timer(&pRxTS->TsCommonInfo.SetupTimer,
 187                             TsSetupTimeOut,
 188                             (unsigned long) pRxTS);
 189
 190                 _setup_timer(&pRxTS->TsCommonInfo.InactTimer,
 191                             TsInactTimeout,
 192                             (unsigned long) pRxTS);
 193
 194                 _setup_timer(&pRxTS->RxAdmittedBARecord.Timer,
 195                             RxBaInactTimeout,
 196                             (unsigned long) pRxTS);
 197
 198                 _setup_timer(&pRxTS->RxPktPendingTimer,
 199                             RxPktPendingTimeout,
 200                             (unsigned long) pRxTS);
 201
 202                 ResetRxTsEntry(pRxTS);
 203                 list_add_tail(&pRxTS->TsCommonInfo.List,
 204                               &ieee->Rx_TS_Unused_List);
 205                 pRxTS++;
 206         }
 207         INIT_LIST_HEAD(&ieee->RxReorder_Unused_List);
 208         for (count = 0; count < REORDER_ENTRY_NUM; count++) {
 209                 list_add_tail(&pRxReorderEntry->List,
 210                               &ieee->RxReorder_Unused_List);
 211                 if (count == (REORDER_ENTRY_NUM-1))
 212                         break;
 213                 pRxReorderEntry = &ieee->RxReorderEntry[count+1];
 214         }
 215
 216 }
 217
 218 static void AdmitTS(struct rtllib_device *ieee,
 219                     struct ts_common_info *pTsCommonInfo, u32 InactTime)
 220 {
 221         del_timer_sync(&pTsCommonInfo->SetupTimer);
 222         del_timer_sync(&pTsCommonInfo->InactTimer);
 223
 224         if (InactTime != 0)
 225                 mod_timer(&pTsCommonInfo->InactTimer, jiffies +
 226                           msecs_to_jiffies(InactTime));
 227 }
 228
 229 static struct ts_common_info *SearchAdmitTRStream(struct rtllib_device *ieee,
 230                                                   u8 *Addr, u8 TID,
 231                                                   enum tr_select TxRxSelect)
 232 {
 233         u8      dir;
 234         bool    search_dir[4] = {0};
 235         struct list_head *psearch_list;
 236         struct ts_common_info *pRet = NULL;
 237
 238         if (ieee->iw_mode == IW_MODE_MASTER) {
 239                 if (TxRxSelect == TX_DIR) {
 240                         search_dir[DIR_DOWN] = true;
 241                         search_dir[DIR_BI_DIR] = true;
 242                 } else {
 243                         search_dir[DIR_UP] = true;
 244                         search_dir[DIR_BI_DIR] = true;
 245                 }
 246         } else if (ieee->iw_mode == IW_MODE_ADHOC) {
 247                 if (TxRxSelect == TX_DIR)
 248                         search_dir[DIR_UP] = true;
 249                 else
 250                         search_dir[DIR_DOWN] = true;
 251         } else {
 252                 if (TxRxSelect == TX_DIR) {
 253                         search_dir[DIR_UP] = true;
 254                         search_dir[DIR_BI_DIR] = true;
 255                         search_dir[DIR_DIRECT] = true;
 256                 } else {
 257                         search_dir[DIR_DOWN] = true;
 258                         search_dir[DIR_BI_DIR] = true;
 259                         search_dir[DIR_DIRECT] = true;
 260                 }
 261         }
 262
 263         if (TxRxSelect == TX_DIR)
 264                 psearch_list = &ieee->Tx_TS_Admit_List;
 265         else
 266                 psearch_list = &ieee->Rx_TS_Admit_List;
 267
 268         for (dir = 0; dir <= DIR_BI_DIR; dir++) {
 269                 if (!search_dir[dir])
 270                         continue;
 271                 list_for_each_entry(pRet, psearch_list, List) {
 272                         if (memcmp(pRet->Addr, Addr, 6) == 0)
 273                                 if (pRet->TSpec.f.TSInfo.field.ucTSID == TID)
 274                                         if (pRet->TSpec.f.TSInfo.field.ucDirection == dir)
 275                                                 break;
 276
 277                 }
 278                 if (&pRet->List  != psearch_list)
 279                         break;
 280         }
 281
 282         if (pRet && &pRet->List  != psearch_list)
 283                 return pRet;
 284         return NULL;
 285 }
 286
 287 static void MakeTSEntry(struct ts_common_info *pTsCommonInfo, u8 *Addr,
 288                         union tspec_body *pTSPEC, union qos_tclas *pTCLAS,
 289                         u8 TCLAS_Num, u8 TCLAS_Proc)
 290 {
 291         u8      count;
 292
 293         if (pTsCommonInfo == NULL)
 294                 return;
 295
 296         memcpy(pTsCommonInfo->Addr, Addr, 6);
 297
 298         if (pTSPEC != NULL)
 299                 memcpy((u8 *)(&(pTsCommonInfo->TSpec)), (u8 *)pTSPEC,
 300                         sizeof(union tspec_body));
 301
 302         for (count = 0; count < TCLAS_Num; count++)
 303                 memcpy((u8 *)(&(pTsCommonInfo->TClass[count])),
 304                        (u8 *)pTCLAS, sizeof(union qos_tclas));
 305
 306         pTsCommonInfo->TClasProc = TCLAS_Proc;
 307         pTsCommonInfo->TClasNum = TCLAS_Num;
 308 }
 309
 310 bool GetTs(struct rtllib_device *ieee, struct ts_common_info **ppTS,
 311            u8 *Addr, u8 TID, enum tr_select TxRxSelect, bool bAddNewTs)
 312 {
 313         u8      UP = 0;
 314         union tspec_body TSpec;
 315         union qos_tsinfo *pTSInfo = &TSpec.f.TSInfo;
 316         struct list_head *pUnusedList;
 317         struct list_head *pAddmitList;
 318         enum direction_value Dir;
 319
 320         if (is_multicast_ether_addr(Addr)) {
 321                 RTLLIB_DEBUG(RTLLIB_DL_ERR,
 322                              "ERR! get TS for Broadcast or Multicast\n");
 323                 return false;
 324         }
 325         if (ieee->current_network.qos_data.supported == 0) {
 326                 UP = 0;
 327         } else {
 328                 if (!IsACValid(TID)) {
 329                         RTLLIB_DEBUG(RTLLIB_DL_ERR,
 330                                      "ERR! in %s(), TID(%d) is not valid\n",
 331                                      __func__, TID);
 332                         return false;
 333                 }
 334
 335                 switch (TID) {
 336                 case 0:
 337                 case 3:
 338                         UP = 0;
 339                         break;
 340                 case 1:
 341                 case 2:
 342                         UP = 2;
 343                         break;
 344                 case 4:
 345                 case 5:
 346                         UP = 5;
 347                         break;
 348                 case 6:
 349                 case 7:
 350                         UP = 7;
 351                         break;
 352                 }
 353         }
 354
 355         *ppTS = SearchAdmitTRStream(ieee, Addr, UP, TxRxSelect);
 356         if (*ppTS != NULL)
 357                 return true;
 358
 359         if (!bAddNewTs) {
 360                 RTLLIB_DEBUG(RTLLIB_DL_TS,
 361                              "add new TS failed(tid:%d)\n", UP);
 362                 return false;
 363         }
 364
 365         pUnusedList = (TxRxSelect == TX_DIR) ?
 366                                 (&ieee->Tx_TS_Unused_List) :
 367                                 (&ieee->Rx_TS_Unused_List);
 368
 369         pAddmitList = (TxRxSelect == TX_DIR) ?
 370                                 (&ieee->Tx_TS_Admit_List) :
 371                                 (&ieee->Rx_TS_Admit_List);
 372
 373         Dir = (ieee->iw_mode == IW_MODE_MASTER) ?
 374                                 ((TxRxSelect == TX_DIR) ? DIR_DOWN : DIR_UP) :
 375                                 ((TxRxSelect == TX_DIR) ? DIR_UP : DIR_DOWN);
 376
 377         RTLLIB_DEBUG(RTLLIB_DL_TS, "to add Ts\n");
 378         if (!list_empty(pUnusedList)) {
 379                 (*ppTS) = list_entry(pUnusedList->next,
 380                           struct ts_common_info, List);
 381                 list_del_init(&(*ppTS)->List);
 382                 if (TxRxSelect == TX_DIR) {
 383                         struct tx_ts_record *tmp =
 384                                 container_of(*ppTS,
 385                                 struct tx_ts_record,
 386                                 TsCommonInfo);
 387                         ResetTxTsEntry(tmp);
 388                 } else {
 389                         struct rx_ts_record *tmp =
 390                                  container_of(*ppTS,
 391                                  struct rx_ts_record,
 392                                  TsCommonInfo);
 393                         ResetRxTsEntry(tmp);
 394                 }
 395
 396                 RTLLIB_DEBUG(RTLLIB_DL_TS,
 397                              "to init current TS, UP:%d, Dir:%d, addr: %pM ppTs=%p\n",
 398                              UP, Dir, Addr, *ppTS);
 399                 pTSInfo->field.ucTrafficType = 0;
 400                 pTSInfo->field.ucTSID = UP;
 401                 pTSInfo->field.ucDirection = Dir;
 402                 pTSInfo->field.ucAccessPolicy = 1;
 403                 pTSInfo->field.ucAggregation = 0;
 404                 pTSInfo->field.ucPSB = 0;
 405                 pTSInfo->field.ucUP = UP;
 406                 pTSInfo->field.ucTSInfoAckPolicy = 0;
 407                 pTSInfo->field.ucSchedule = 0;
 408
 409                 MakeTSEntry(*ppTS, Addr, &TSpec, NULL, 0, 0);
 410                 AdmitTS(ieee, *ppTS, 0);
 411                 list_add_tail(&((*ppTS)->List), pAddmitList);
 412
 413                 return true;
 414         }
 415
 416         RTLLIB_DEBUG(RTLLIB_DL_ERR,
 417                      "ERR!!in function %s() There is not enough dir=%d(0=up down=1) TS record to be used!!",
 418                      __func__, Dir);
 419         return false;
 420 }
 421
 422 static void RemoveTsEntry(struct rtllib_device *ieee, struct ts_common_info *pTs,
 423                           enum tr_select TxRxSelect)
 424 {
 425         del_timer_sync(&pTs->SetupTimer);
 426         del_timer_sync(&pTs->InactTimer);
 427         TsInitDelBA(ieee, pTs, TxRxSelect);
 428
 429         if (TxRxSelect == RX_DIR) {
 430                 struct rx_reorder_entry *pRxReorderEntry;
 431                 struct rx_ts_record *pRxTS = (struct rx_ts_record *)pTs;
 432
 433                 if (timer_pending(&pRxTS->RxPktPendingTimer))
 434                         del_timer_sync(&pRxTS->RxPktPendingTimer);
 435
 436                 while (!list_empty(&pRxTS->RxPendingPktList)) {
 437                         pRxReorderEntry = (struct rx_reorder_entry *)
 438                                         list_entry(pRxTS->RxPendingPktList.prev,
 439                                         struct rx_reorder_entry, List);
 440                         RTLLIB_DEBUG(RTLLIB_DL_REORDER,
 441                                      "%s(): Delete SeqNum %d!\n", __func__,
 442                                      pRxReorderEntry->SeqNum);
 443                         list_del_init(&pRxReorderEntry->List);
 444                         {
 445                                 int i = 0;
 446                                 struct rtllib_rxb *prxb = pRxReorderEntry->prxb;
 447
 448                                 if (unlikely(!prxb))
 449                                         return;
 450                                 for (i = 0; i < prxb->nr_subframes; i++)
 451                                         dev_kfree_skb(prxb->subframes[i]);
 452                                 kfree(prxb);
 453                                 prxb = NULL;
 454                         }
 455                         list_add_tail(&pRxReorderEntry->List,
 456                                       &ieee->RxReorder_Unused_List);
 457                 }
 458         } else {
 459                 struct tx_ts_record *pTxTS = (struct tx_ts_record *)pTs;
 460
 461                 del_timer_sync(&pTxTS->TsAddBaTimer);
 462         }
 463 }
 464
 465 void RemovePeerTS(struct rtllib_device *ieee, u8 *Addr)
 466 {
 467         struct ts_common_info *pTS, *pTmpTS;
 468
 469         netdev_info(ieee->dev, "===========>RemovePeerTS, %pM\n", Addr);
 470
 471         list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Pending_List, List) {
 472                 if (memcmp(pTS->Addr, Addr, 6) == 0) {
 473                         RemoveTsEntry(ieee, pTS, TX_DIR);
 474                         list_del_init(&pTS->List);
 475                         list_add_tail(&pTS->List, &ieee->Tx_TS_Unused_List);
 476                 }
 477         }
 478
 479         list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Admit_List, List) {
 480                 if (memcmp(pTS->Addr, Addr, 6) == 0) {
 481                         netdev_info(ieee->dev,
 482                                     "====>remove Tx_TS_admin_list\n");
 483                         RemoveTsEntry(ieee, pTS, TX_DIR);
 484                         list_del_init(&pTS->List);
 485                         list_add_tail(&pTS->List, &ieee->Tx_TS_Unused_List);
 486                 }
 487         }
 488
 489         list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Pending_List, List) {
 490                 if (memcmp(pTS->Addr, Addr, 6) == 0) {
 491                         RemoveTsEntry(ieee, pTS, RX_DIR);
 492                         list_del_init(&pTS->List);
 493                         list_add_tail(&pTS->List, &ieee->Rx_TS_Unused_List);
 494                 }
 495         }
 496
 497         list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Admit_List, List) {
 498                 if (memcmp(pTS->Addr, Addr, 6) == 0) {
 499                         RemoveTsEntry(ieee, pTS, RX_DIR);
 500                         list_del_init(&pTS->List);
 501                         list_add_tail(&pTS->List, &ieee->Rx_TS_Unused_List);
 502                 }
 503         }
 504 }
 505 EXPORT_SYMBOL(RemovePeerTS);
 506
 507 void RemoveAllTS(struct rtllib_device *ieee)
 508 {
 509         struct ts_common_info *pTS, *pTmpTS;
 510
 511         list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Pending_List, List) {
 512                 RemoveTsEntry(ieee, pTS, TX_DIR);
 513                 list_del_init(&pTS->List);
 514                 list_add_tail(&pTS->List, &ieee->Tx_TS_Unused_List);
 515         }
 516
 517         list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Admit_List, List) {
 518                 RemoveTsEntry(ieee, pTS, TX_DIR);
 519                 list_del_init(&pTS->List);
 520                 list_add_tail(&pTS->List, &ieee->Tx_TS_Unused_List);
 521         }
 522
 523         list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Pending_List, List) {
 524                 RemoveTsEntry(ieee, pTS, RX_DIR);
 525                 list_del_init(&pTS->List);
 526                 list_add_tail(&pTS->List, &ieee->Rx_TS_Unused_List);
 527         }
 528
 529         list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Admit_List, List) {
 530                 RemoveTsEntry(ieee, pTS, RX_DIR);
 531                 list_del_init(&pTS->List);
 532                 list_add_tail(&pTS->List, &ieee->Rx_TS_Unused_List);
 533         }
 534 }
 535
 536 void TsStartAddBaProcess(struct rtllib_device *ieee, struct tx_ts_record *pTxTS)
 537 {
 538         if (pTxTS->bAddBaReqInProgress == false) {
 539                 pTxTS->bAddBaReqInProgress = true;
 540
 541                 if (pTxTS->bAddBaReqDelayed) {
 542                         RTLLIB_DEBUG(RTLLIB_DL_BA,
 543                                      "TsStartAddBaProcess(): Delayed Start ADDBA after 60 sec!!\n");
 544                         mod_timer(&pTxTS->TsAddBaTimer, jiffies +
 545                                   msecs_to_jiffies(TS_ADDBA_DELAY));
 546                 } else {
 547                         RTLLIB_DEBUG(RTLLIB_DL_BA,
 548                                      "TsStartAddBaProcess(): Immediately Start ADDBA now!!\n");
 549                         mod_timer(&pTxTS->TsAddBaTimer, jiffies+10);
 550                 }
 551         } else
 552                 RTLLIB_DEBUG(RTLLIB_DL_BA, "%s()==>BA timer is already added\n",
 553                              __func__);
 554 }