drivers/staging/rtl8192u/ieee80211/rtl819x_TSProc.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include "ieee80211.h"
   3 #include <linux/etherdevice.h>
   4 #include <linux/slab.h>
   5 #include "rtl819x_TS.h"
   6
   7 static void TsSetupTimeOut(struct timer_list *unused)
   8 {
   9         // Not implement yet
  10         // This is used for WMMSA and ACM , that would send ADDTSReq frame.
  11 }
  12
  13 static void TsInactTimeout(struct timer_list *unused)
  14 {
  15         // Not implement yet
  16         // This is used for WMMSA and ACM.
  17         // This function would be call when TS is no Tx/Rx for some period of time.
  18 }
  19
  20 /********************************************************************************************************************
  21  *function:  I still not understand this function, so wait for further implementation
  22  *   input:  unsigned long       data           //acturally we send struct tx_ts_record or struct rx_ts_record to these timer
  23  *  return:  NULL
  24  *  notice:
  25  ********************************************************************************************************************/
  26 static void RxPktPendingTimeout(struct timer_list *t)
  27 {
  28         struct rx_ts_record     *pRxTs = from_timer(pRxTs, t, rx_pkt_pending_timer);
  29         struct ieee80211_device *ieee = container_of(pRxTs, struct ieee80211_device, RxTsRecord[pRxTs->num]);
  30
  31         struct rx_reorder_entry *pReorderEntry = NULL;
  32
  33         //u32 flags = 0;
  34         unsigned long flags = 0;
  35         u8 index = 0;
  36         bool bPktInBuf = false;
  37
  38         spin_lock_irqsave(&(ieee->reorder_spinlock), flags);
  39         IEEE80211_DEBUG(IEEE80211_DL_REORDER, "==================>%s()\n", __func__);
  40         if (pRxTs->rx_timeout_indicate_seq != 0xffff) {
  41                 // Indicate the pending packets sequentially according to SeqNum until meet the gap.
  42                 while (!list_empty(&pRxTs->rx_pending_pkt_list)) {
  43                         pReorderEntry = list_entry(pRxTs->rx_pending_pkt_list.prev, struct rx_reorder_entry, List);
  44                         if (index == 0)
  45                                 pRxTs->rx_indicate_seq = pReorderEntry->SeqNum;
  46
  47                         if (SN_LESS(pReorderEntry->SeqNum, pRxTs->rx_indicate_seq) ||
  48                                 SN_EQUAL(pReorderEntry->SeqNum, pRxTs->rx_indicate_seq)) {
  49                                 list_del_init(&pReorderEntry->List);
  50
  51                                 if (SN_EQUAL(pReorderEntry->SeqNum, pRxTs->rx_indicate_seq))
  52                                         pRxTs->rx_indicate_seq = (pRxTs->rx_indicate_seq + 1) % 4096;
  53
  54                                 IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s: IndicateSeq: %d\n", __func__, pReorderEntry->SeqNum);
  55                                 ieee->stats_IndicateArray[index] = pReorderEntry->prxb;
  56                                 index++;
  57
  58                                 list_add_tail(&pReorderEntry->List, &ieee->RxReorder_Unused_List);
  59                         } else {
  60                                 bPktInBuf = true;
  61                                 break;
  62                         }
  63                 }
  64         }
  65
  66         if (index > 0) {
  67                 // Set rx_timeout_indicate_seq to 0xffff to indicate no pending packets in buffer now.
  68                 pRxTs->rx_timeout_indicate_seq = 0xffff;
  69
  70                 // Indicate packets
  71                 if (index > REORDER_WIN_SIZE) {
  72                         IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Rx Reorder buffer full!! \n");
  73                         spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
  74                         return;
  75                 }
  76                 ieee80211_indicate_packets(ieee, ieee->stats_IndicateArray, index);
  77         }
  78
  79         if (bPktInBuf && (pRxTs->rx_timeout_indicate_seq == 0xffff)) {
  80                 pRxTs->rx_timeout_indicate_seq = pRxTs->rx_indicate_seq;
  81                 mod_timer(&pRxTs->rx_pkt_pending_timer,
  82                           jiffies + msecs_to_jiffies(ieee->pHTInfo->RxReorderPendingTime));
  83         }
  84         spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
  85 }
  86
  87 /********************************************************************************************************************
  88  *function:  Add BA timer function
  89  *   input:  unsigned long       data           //acturally we send struct tx_ts_record or struct rx_ts_record to these timer
  90  *  return:  NULL
  91  *  notice:
  92  ********************************************************************************************************************/
  93 static void TsAddBaProcess(struct timer_list *t)
  94 {
  95         struct tx_ts_record *pTxTs = from_timer(pTxTs, t, ts_add_ba_timer);
  96         u8 num = pTxTs->num;
  97         struct ieee80211_device *ieee = container_of(pTxTs, struct ieee80211_device, TxTsRecord[num]);
  98
  99         TsInitAddBA(ieee, pTxTs, BA_POLICY_IMMEDIATE, false);
 100         IEEE80211_DEBUG(IEEE80211_DL_BA, "%s: ADDBA Req is started!! \n", __func__);
 101 }
 102
 103
 104 static void ResetTsCommonInfo(struct ts_common_info *pTsCommonInfo)
 105 {
 106         eth_zero_addr(pTsCommonInfo->addr);
 107         memset(&pTsCommonInfo->t_spec, 0, sizeof(struct tspec_body));
 108         memset(&pTsCommonInfo->t_class, 0, sizeof(union qos_tclas) * TCLAS_NUM);
 109         pTsCommonInfo->t_clas_proc = 0;
 110         pTsCommonInfo->t_clas_num = 0;
 111 }
 112
 113 static void ResetTxTsEntry(struct tx_ts_record *pTS)
 114 {
 115         ResetTsCommonInfo(&pTS->ts_common_info);
 116         pTS->tx_cur_seq = 0;
 117         pTS->add_ba_req_in_progress = false;
 118         pTS->add_ba_req_delayed = false;
 119         pTS->using_ba = false;
 120         ResetBaEntry(&pTS->tx_admitted_ba_record); //For BA Originator
 121         ResetBaEntry(&pTS->tx_pending_ba_record);
 122 }
 123
 124 static void ResetRxTsEntry(struct rx_ts_record *pTS)
 125 {
 126         ResetTsCommonInfo(&pTS->ts_common_info);
 127         pTS->rx_indicate_seq = 0xffff; // This indicate the rx_indicate_seq is not used now!!
 128         pTS->rx_timeout_indicate_seq = 0xffff; // This indicate the rx_timeout_indicate_seq is not used now!!
 129         ResetBaEntry(&pTS->rx_admitted_ba_record);        // For BA Recipient
 130 }
 131
 132 void TSInitialize(struct ieee80211_device *ieee)
 133 {
 134         struct tx_ts_record     *pTxTS  = ieee->TxTsRecord;
 135         struct rx_ts_record     *pRxTS  = ieee->RxTsRecord;
 136         struct rx_reorder_entry *pRxReorderEntry = ieee->RxReorderEntry;
 137         u8                              count = 0;
 138         IEEE80211_DEBUG(IEEE80211_DL_TS, "==========>%s()\n", __func__);
 139         // Initialize Tx TS related info.
 140         INIT_LIST_HEAD(&ieee->Tx_TS_Admit_List);
 141         INIT_LIST_HEAD(&ieee->Tx_TS_Pending_List);
 142         INIT_LIST_HEAD(&ieee->Tx_TS_Unused_List);
 143
 144         for (count = 0; count < TOTAL_TS_NUM; count++) {
 145                 //
 146                 pTxTS->num = count;
 147                 // The timers for the operation of Traffic Stream and Block Ack.
 148                 // DLS related timer will be add here in the future!!
 149                 timer_setup(&pTxTS->ts_common_info.setup_timer, TsSetupTimeOut,
 150                             0);
 151                 timer_setup(&pTxTS->ts_common_info.inact_timer, TsInactTimeout,
 152                             0);
 153                 timer_setup(&pTxTS->ts_add_ba_timer, TsAddBaProcess, 0);
 154                 timer_setup(&pTxTS->tx_pending_ba_record.timer, BaSetupTimeOut,
 155                             0);
 156                 timer_setup(&pTxTS->tx_admitted_ba_record.timer,
 157                             TxBaInactTimeout, 0);
 158                 ResetTxTsEntry(pTxTS);
 159                 list_add_tail(&pTxTS->ts_common_info.list, &ieee->Tx_TS_Unused_List);
 160                 pTxTS++;
 161         }
 162
 163         // Initialize Rx TS related info.
 164         INIT_LIST_HEAD(&ieee->Rx_TS_Admit_List);
 165         INIT_LIST_HEAD(&ieee->Rx_TS_Pending_List);
 166         INIT_LIST_HEAD(&ieee->Rx_TS_Unused_List);
 167         for (count = 0; count < TOTAL_TS_NUM; count++) {
 168                 pRxTS->num = count;
 169                 INIT_LIST_HEAD(&pRxTS->rx_pending_pkt_list);
 170                 timer_setup(&pRxTS->ts_common_info.setup_timer, TsSetupTimeOut,
 171                             0);
 172                 timer_setup(&pRxTS->ts_common_info.inact_timer, TsInactTimeout,
 173                             0);
 174                 timer_setup(&pRxTS->rx_admitted_ba_record.timer,
 175                             RxBaInactTimeout, 0);
 176                 timer_setup(&pRxTS->rx_pkt_pending_timer, RxPktPendingTimeout, 0);
 177                 ResetRxTsEntry(pRxTS);
 178                 list_add_tail(&pRxTS->ts_common_info.list, &ieee->Rx_TS_Unused_List);
 179                 pRxTS++;
 180         }
 181         // Initialize unused Rx Reorder List.
 182         INIT_LIST_HEAD(&ieee->RxReorder_Unused_List);
 183         for (count = 0; count < REORDER_ENTRY_NUM; count++) {
 184                 list_add_tail(&pRxReorderEntry->List, &ieee->RxReorder_Unused_List);
 185                 if (count == (REORDER_ENTRY_NUM - 1))
 186                         break;
 187                 pRxReorderEntry = &ieee->RxReorderEntry[count + 1];
 188         }
 189 }
 190
 191 static void AdmitTS(struct ieee80211_device *ieee,
 192                     struct ts_common_info *pTsCommonInfo, u32 InactTime)
 193 {
 194         del_timer_sync(&pTsCommonInfo->setup_timer);
 195         del_timer_sync(&pTsCommonInfo->inact_timer);
 196
 197         if (InactTime != 0)
 198                 mod_timer(&pTsCommonInfo->inact_timer,
 199                           jiffies + msecs_to_jiffies(InactTime));
 200 }
 201
 202
 203 static struct ts_common_info *SearchAdmitTRStream(struct ieee80211_device *ieee,
 204                                                   u8 *Addr, u8 TID,
 205                                                   enum tr_select TxRxSelect)
 206 {
 207         //DIRECTION_VALUE       dir;
 208         u8      dir;
 209         bool                            search_dir[4] = {0};
 210         struct list_head                *psearch_list; //FIXME
 211         struct ts_common_info   *pRet = NULL;
 212         if (ieee->iw_mode == IW_MODE_MASTER) { //ap mode
 213                 if (TxRxSelect == TX_DIR) {
 214                         search_dir[DIR_DOWN] = true;
 215                         search_dir[DIR_BI_DIR] = true;
 216                 } else {
 217                         search_dir[DIR_UP]      = true;
 218                         search_dir[DIR_BI_DIR] = true;
 219                 }
 220         } else if (ieee->iw_mode == IW_MODE_ADHOC) {
 221                 if (TxRxSelect == TX_DIR)
 222                         search_dir[DIR_UP]      = true;
 223                 else
 224                         search_dir[DIR_DOWN] = true;
 225         } else {
 226                 if (TxRxSelect == TX_DIR) {
 227                         search_dir[DIR_UP]      = true;
 228                         search_dir[DIR_BI_DIR] = true;
 229                         search_dir[DIR_DIRECT] = true;
 230                 } else {
 231                         search_dir[DIR_DOWN] = true;
 232                         search_dir[DIR_BI_DIR] = true;
 233                         search_dir[DIR_DIRECT] = true;
 234                 }
 235         }
 236
 237         if (TxRxSelect == TX_DIR)
 238                 psearch_list = &ieee->Tx_TS_Admit_List;
 239         else
 240                 psearch_list = &ieee->Rx_TS_Admit_List;
 241
 242         //for(dir = DIR_UP; dir <= DIR_BI_DIR; dir++)
 243         for (dir = 0; dir <= DIR_BI_DIR; dir++) {
 244                 if (!search_dir[dir])
 245                         continue;
 246                 list_for_each_entry(pRet, psearch_list, list) {
 247         //              IEEE80211_DEBUG(IEEE80211_DL_TS, "ADD:%pM, TID:%d, dir:%d\n", pRet->Addr, pRet->TSpec.ts_info.ucTSID, pRet->TSpec.ts_info.ucDirection);
 248                         if (memcmp(pRet->addr, Addr, 6) == 0)
 249                                 if (pRet->t_spec.ts_info.uc_tsid == TID)
 250                                         if (pRet->t_spec.ts_info.uc_direction == dir) {
 251         //                                      printk("Bingo! got it\n");
 252                                                 break;
 253                                         }
 254                 }
 255                 if (&pRet->list  != psearch_list)
 256                         break;
 257         }
 258
 259         if (&pRet->list  != psearch_list)
 260                 return pRet;
 261         else
 262                 return NULL;
 263 }
 264
 265 static void MakeTSEntry(struct ts_common_info *pTsCommonInfo, u8 *Addr,
 266                         struct tspec_body *pTSPEC, union qos_tclas *pTCLAS, u8 TCLAS_Num,
 267                         u8 TCLAS_Proc)
 268 {
 269         u8      count;
 270
 271         if (pTsCommonInfo == NULL)
 272                 return;
 273
 274         memcpy(pTsCommonInfo->addr, Addr, 6);
 275
 276         if (pTSPEC != NULL)
 277                 memcpy((u8 *)(&(pTsCommonInfo->t_spec)), (u8 *)pTSPEC, sizeof(struct tspec_body));
 278
 279         for (count = 0; count < TCLAS_Num; count++)
 280                 memcpy((u8 *)(&(pTsCommonInfo->t_class[count])), (u8 *)pTCLAS, sizeof(union qos_tclas));
 281
 282         pTsCommonInfo->t_clas_proc = TCLAS_Proc;
 283         pTsCommonInfo->t_clas_num = TCLAS_Num;
 284 }
 285
 286
 287 bool GetTs(
 288         struct ieee80211_device         *ieee,
 289         struct ts_common_info           **ppTS,
 290         u8                              *Addr,
 291         u8                              TID,
 292         enum tr_select                  TxRxSelect,  //Rx:1, Tx:0
 293         bool                            bAddNewTs
 294         )
 295 {
 296         u8      UP = 0;
 297         //
 298         // We do not build any TS for Broadcast or Multicast stream.
 299         // So reject these kinds of search here.
 300         //
 301         if (is_multicast_ether_addr(Addr)) {
 302                 IEEE80211_DEBUG(IEEE80211_DL_ERR, "get TS for Broadcast or Multicast\n");
 303                 return false;
 304         }
 305
 306         if (ieee->current_network.qos_data.supported == 0) {
 307                 UP = 0;
 308         } else {
 309                 // In WMM case: we use 4 TID only
 310                 if (!is_ac_valid(TID)) {
 311                         IEEE80211_DEBUG(IEEE80211_DL_ERR, " in %s(), TID(%d) is not valid\n", __func__, TID);
 312                         return false;
 313                 }
 314
 315                 switch (TID) {
 316                 case 0:
 317                 case 3:
 318                         UP = 0;
 319                         break;
 320
 321                 case 1:
 322                 case 2:
 323                         UP = 2;
 324                         break;
 325
 326                 case 4:
 327                 case 5:
 328                         UP = 5;
 329                         break;
 330
 331                 case 6:
 332                 case 7:
 333                         UP = 7;
 334                         break;
 335                 }
 336         }
 337
 338         *ppTS = SearchAdmitTRStream(
 339                         ieee,
 340                         Addr,
 341                         UP,
 342                         TxRxSelect);
 343         if (*ppTS != NULL) {
 344                 return true;
 345         } else {
 346                 if (!bAddNewTs) {
 347                         IEEE80211_DEBUG(IEEE80211_DL_TS, "add new TS failed(tid:%d)\n", UP);
 348                         return false;
 349                 } else {
 350                         //
 351                         // Create a new Traffic stream for current Tx/Rx
 352                         // This is for EDCA and WMM to add a new TS.
 353                         // For HCCA or WMMSA, TS cannot be addmit without negotiation.
 354                         //
 355                         struct tspec_body       TSpec;
 356                         struct qos_tsinfo       *pTSInfo = &TSpec.ts_info;
 357                         struct list_head        *pUnusedList =
 358                                                                 (TxRxSelect == TX_DIR) ?
 359                                                                 (&ieee->Tx_TS_Unused_List) :
 360                                                                 (&ieee->Rx_TS_Unused_List);
 361
 362                         struct list_head        *pAddmitList =
 363                                                                 (TxRxSelect == TX_DIR) ?
 364                                                                 (&ieee->Tx_TS_Admit_List) :
 365                                                                 (&ieee->Rx_TS_Admit_List);
 366
 367                         enum direction_value    Dir =           (ieee->iw_mode == IW_MODE_MASTER) ?
 368                                                                 ((TxRxSelect == TX_DIR) ? DIR_DOWN : DIR_UP) :
 369                                                                 ((TxRxSelect == TX_DIR) ? DIR_UP : DIR_DOWN);
 370                         IEEE80211_DEBUG(IEEE80211_DL_TS, "to add Ts\n");
 371                         if (!list_empty(pUnusedList)) {
 372                                 (*ppTS) = list_entry(pUnusedList->next, struct ts_common_info, list);
 373                                 list_del_init(&(*ppTS)->list);
 374                                 if (TxRxSelect == TX_DIR) {
 375                                         struct tx_ts_record *tmp = container_of(*ppTS, struct tx_ts_record, ts_common_info);
 376                                         ResetTxTsEntry(tmp);
 377                                 } else {
 378                                         struct rx_ts_record *tmp = container_of(*ppTS, struct rx_ts_record, ts_common_info);
 379                                         ResetRxTsEntry(tmp);
 380                                 }
 381
 382                                 IEEE80211_DEBUG(IEEE80211_DL_TS, "to init current TS, UP:%d, Dir:%d, addr:%pM\n", UP, Dir, Addr);
 383                                 // Prepare TS Info related field
 384                                 pTSInfo->uc_traffic_type = 0;           // Traffic type: WMM is reserved in this field
 385                                 pTSInfo->uc_tsid = UP;                  // TSID
 386                                 pTSInfo->uc_direction = Dir;            // Direction: if there is DirectLink, this need additional consideration.
 387                                 pTSInfo->uc_access_policy = 1;          // Access policy
 388                                 pTSInfo->uc_aggregation = 0;            // Aggregation
 389                                 pTSInfo->uc_psb = 0;                    // Aggregation
 390                                 pTSInfo->uc_up = UP;                    // User priority
 391                                 pTSInfo->uc_ts_info_ack_policy = 0;     // Ack policy
 392                                 pTSInfo->uc_schedule = 0;               // Schedule
 393
 394                                 MakeTSEntry(*ppTS, Addr, &TSpec, NULL, 0, 0);
 395                                 AdmitTS(ieee, *ppTS, 0);
 396                                 list_add_tail(&((*ppTS)->list), pAddmitList);
 397                                 // if there is DirectLink, we need to do additional operation here!!
 398
 399                                 return true;
 400                         } else {
 401                                 IEEE80211_DEBUG(IEEE80211_DL_ERR, "in function %s() There is not enough TS record to be used!!", __func__);
 402                                 return false;
 403                         }
 404                 }
 405         }
 406 }
 407
 408 static void RemoveTsEntry(struct ieee80211_device *ieee, struct ts_common_info *pTs,
 409                           enum tr_select TxRxSelect)
 410 {
 411         //u32 flags = 0;
 412         unsigned long flags = 0;
 413         del_timer_sync(&pTs->setup_timer);
 414         del_timer_sync(&pTs->inact_timer);
 415         TsInitDelBA(ieee, pTs, TxRxSelect);
 416
 417         if (TxRxSelect == RX_DIR) {
 418                 struct rx_reorder_entry *pRxReorderEntry;
 419                 struct rx_ts_record     *pRxTS = (struct rx_ts_record *)pTs;
 420                 if (timer_pending(&pRxTS->rx_pkt_pending_timer))
 421                         del_timer_sync(&pRxTS->rx_pkt_pending_timer);
 422
 423                 while (!list_empty(&pRxTS->rx_pending_pkt_list)) {
 424                         spin_lock_irqsave(&(ieee->reorder_spinlock), flags);
 425                         //pRxReorderEntry = list_entry(&pRxTS->rx_pending_pkt_list.prev,RX_REORDER_ENTRY,List);
 426                         pRxReorderEntry = list_entry(pRxTS->rx_pending_pkt_list.prev, struct rx_reorder_entry, List);
 427                         list_del_init(&pRxReorderEntry->List);
 428                         {
 429                                 int i = 0;
 430                                 struct ieee80211_rxb *prxb = pRxReorderEntry->prxb;
 431                                 if (unlikely(!prxb)) {
 432                                         spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
 433                                         return;
 434                                 }
 435                                 for (i =  0; i < prxb->nr_subframes; i++)
 436                                         dev_kfree_skb(prxb->subframes[i]);
 437
 438                                 kfree(prxb);
 439                                 prxb = NULL;
 440                         }
 441                         list_add_tail(&pRxReorderEntry->List, &ieee->RxReorder_Unused_List);
 442                         spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
 443                 }
 444
 445         } else {
 446                 struct tx_ts_record *pTxTS = (struct tx_ts_record *)pTs;
 447                 del_timer_sync(&pTxTS->ts_add_ba_timer);
 448         }
 449 }
 450
 451 void RemovePeerTS(struct ieee80211_device *ieee, u8 *Addr)
 452 {
 453         struct ts_common_info   *pTS, *pTmpTS;
 454
 455         printk("===========>%s,%pM\n", __func__, Addr);
 456         list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Pending_List, list) {
 457                 if (memcmp(pTS->addr, Addr, 6) == 0) {
 458                         RemoveTsEntry(ieee, pTS, TX_DIR);
 459                         list_del_init(&pTS->list);
 460                         list_add_tail(&pTS->list, &ieee->Tx_TS_Unused_List);
 461                 }
 462         }
 463
 464         list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Admit_List, list) {
 465                 if (memcmp(pTS->addr, Addr, 6) == 0) {
 466                         printk("====>remove Tx_TS_admin_list\n");
 467                         RemoveTsEntry(ieee, pTS, TX_DIR);
 468                         list_del_init(&pTS->list);
 469                         list_add_tail(&pTS->list, &ieee->Tx_TS_Unused_List);
 470                 }
 471         }
 472
 473         list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Pending_List, list) {
 474                 if (memcmp(pTS->addr, Addr, 6) == 0) {
 475                         RemoveTsEntry(ieee, pTS, RX_DIR);
 476                         list_del_init(&pTS->list);
 477                         list_add_tail(&pTS->list, &ieee->Rx_TS_Unused_List);
 478                 }
 479         }
 480
 481         list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Admit_List, list) {
 482                 if (memcmp(pTS->addr, Addr, 6) == 0) {
 483                         RemoveTsEntry(ieee, pTS, RX_DIR);
 484                         list_del_init(&pTS->list);
 485                         list_add_tail(&pTS->list, &ieee->Rx_TS_Unused_List);
 486                 }
 487         }
 488 }
 489
 490 void RemoveAllTS(struct ieee80211_device *ieee)
 491 {
 492         struct ts_common_info *pTS, *pTmpTS;
 493
 494         list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Pending_List, list) {
 495                 RemoveTsEntry(ieee, pTS, TX_DIR);
 496                 list_del_init(&pTS->list);
 497                 list_add_tail(&pTS->list, &ieee->Tx_TS_Unused_List);
 498         }
 499
 500         list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Admit_List, list) {
 501                 RemoveTsEntry(ieee, pTS, TX_DIR);
 502                 list_del_init(&pTS->list);
 503                 list_add_tail(&pTS->list, &ieee->Tx_TS_Unused_List);
 504         }
 505
 506         list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Pending_List, list) {
 507                 RemoveTsEntry(ieee, pTS, RX_DIR);
 508                 list_del_init(&pTS->list);
 509                 list_add_tail(&pTS->list, &ieee->Rx_TS_Unused_List);
 510         }
 511
 512         list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Admit_List, list) {
 513                 RemoveTsEntry(ieee, pTS, RX_DIR);
 514                 list_del_init(&pTS->list);
 515                 list_add_tail(&pTS->list, &ieee->Rx_TS_Unused_List);
 516         }
 517 }
 518
 519 void TsStartAddBaProcess(struct ieee80211_device *ieee, struct tx_ts_record *pTxTS)
 520 {
 521         if (!pTxTS->add_ba_req_in_progress) {
 522                 pTxTS->add_ba_req_in_progress = true;
 523                 if (pTxTS->add_ba_req_delayed)  {
 524                         IEEE80211_DEBUG(IEEE80211_DL_BA, "%s: Delayed Start ADDBA after 60 sec!!\n", __func__);
 525                         mod_timer(&pTxTS->ts_add_ba_timer,
 526                                   jiffies + msecs_to_jiffies(TS_ADDBA_DELAY));
 527                 } else {
 528                         IEEE80211_DEBUG(IEEE80211_DL_BA, "%s: Immediately Start ADDBA now!!\n", __func__);
 529                         mod_timer(&pTxTS->ts_add_ba_timer, jiffies + 10); //set 10 ticks
 530                 }
 531         } else {
 532                 IEEE80211_DEBUG(IEEE80211_DL_ERR, "%s()==>BA timer is already added\n", __func__);
 533         }
 534 }