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 23static void TsSetupTimeOut(unsigned long data) 24{ 25} 26 27static void TsInactTimeout(unsigned long data) 28{ 29} 30 31static 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, "%s(): Indicate" 62 " SeqNum: %d\n", __func__, 63 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, "RxReorderIndicatePacket():" 82 " 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(ieee->pHTInfo->RxReorderPendingTime)); 95 } 96 spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags); 97} 98 99static 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, "TsAddBaProcess(): ADDBA Req is " 108 "started!!\n"); 109} 110 111static 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 120static 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 132static 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 140void 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 218static 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(InactTime)); 227} 228 229static 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 287static 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 310bool 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; 314 315 if (is_multicast_ether_addr(Addr)) { 316 RTLLIB_DEBUG(RTLLIB_DL_ERR, "ERR! get TS for Broadcast or " 317 "Multicast\n"); 318 return false; 319 } 320 if (ieee->current_network.qos_data.supported == 0) { 321 UP = 0; 322 } else { 323 if (!IsACValid(TID)) { 324 RTLLIB_DEBUG(RTLLIB_DL_ERR, "ERR! in %s(), TID(%d) is " 325 "not valid\n", __func__, TID); 326 return false; 327 } 328 329 switch (TID) { 330 case 0: 331 case 3: 332 UP = 0; 333 break; 334 case 1: 335 case 2: 336 UP = 2; 337 break; 338 case 4: 339 case 5: 340 UP = 5; 341 break; 342 case 6: 343 case 7: 344 UP = 7; 345 break; 346 } 347 } 348 349 *ppTS = SearchAdmitTRStream(ieee, Addr, UP, TxRxSelect); 350 if (*ppTS != NULL) { 351 return true; 352 } else { 353 if (!bAddNewTs) { 354 RTLLIB_DEBUG(RTLLIB_DL_TS, "add new TS failed" 355 "(tid:%d)\n", UP); 356 return false; 357 } else { 358 union tspec_body TSpec; 359 union qos_tsinfo *pTSInfo = &TSpec.f.TSInfo; 360 struct list_head *pUnusedList = 361 (TxRxSelect == TX_DIR) ? 362 (&ieee->Tx_TS_Unused_List) : 363 (&ieee->Rx_TS_Unused_List); 364 365 struct list_head *pAddmitList = 366 (TxRxSelect == TX_DIR) ? 367 (&ieee->Tx_TS_Admit_List) : 368 (&ieee->Rx_TS_Admit_List); 369 370 enum direction_value Dir = 371 (ieee->iw_mode == IW_MODE_MASTER) ? 372 ((TxRxSelect == TX_DIR) ? DIR_DOWN : DIR_UP) : 373 ((TxRxSelect == TX_DIR) ? DIR_UP : DIR_DOWN); 374 RTLLIB_DEBUG(RTLLIB_DL_TS, "to add Ts\n"); 375 if (!list_empty(pUnusedList)) { 376 (*ppTS) = list_entry(pUnusedList->next, 377 struct ts_common_info, List); 378 list_del_init(&(*ppTS)->List); 379 if (TxRxSelect == TX_DIR) { 380 struct tx_ts_record *tmp = 381 container_of(*ppTS, 382 struct tx_ts_record, 383 TsCommonInfo); 384 ResetTxTsEntry(tmp); 385 } else { 386 struct rx_ts_record *tmp = 387 container_of(*ppTS, 388 struct rx_ts_record, 389 TsCommonInfo); 390 ResetRxTsEntry(tmp); 391 } 392 393 RTLLIB_DEBUG(RTLLIB_DL_TS, "to init current TS" 394 ", UP:%d, Dir:%d, addr: %pM" 395 " ppTs=%p\n", UP, Dir, 396 Addr, *ppTS); 397 pTSInfo->field.ucTrafficType = 0; 398 pTSInfo->field.ucTSID = UP; 399 pTSInfo->field.ucDirection = Dir; 400 pTSInfo->field.ucAccessPolicy = 1; 401 pTSInfo->field.ucAggregation = 0; 402 pTSInfo->field.ucPSB = 0; 403 pTSInfo->field.ucUP = UP; 404 pTSInfo->field.ucTSInfoAckPolicy = 0; 405 pTSInfo->field.ucSchedule = 0; 406 407 MakeTSEntry(*ppTS, Addr, &TSpec, NULL, 0, 0); 408 AdmitTS(ieee, *ppTS, 0); 409 list_add_tail(&((*ppTS)->List), pAddmitList); 410 411 return true; 412 } else { 413 RTLLIB_DEBUG(RTLLIB_DL_ERR, "ERR!!in function " 414 "%s() There is not enough dir=%d" 415 "(0=up down=1) TS record to be " 416 "used!!", __func__, Dir); 417 return false; 418 } 419 } 420 } 421} 422 423static void RemoveTsEntry(struct rtllib_device *ieee, struct ts_common_info *pTs, 424 enum tr_select TxRxSelect) 425{ 426 del_timer_sync(&pTs->SetupTimer); 427 del_timer_sync(&pTs->InactTimer); 428 TsInitDelBA(ieee, pTs, TxRxSelect); 429 430 if (TxRxSelect == RX_DIR) { 431 struct rx_reorder_entry *pRxReorderEntry; 432 struct rx_ts_record *pRxTS = (struct rx_ts_record *)pTs; 433 434 if (timer_pending(&pRxTS->RxPktPendingTimer)) 435 del_timer_sync(&pRxTS->RxPktPendingTimer); 436 437 while (!list_empty(&pRxTS->RxPendingPktList)) { 438 pRxReorderEntry = (struct rx_reorder_entry *) 439 list_entry(pRxTS->RxPendingPktList.prev, 440 struct rx_reorder_entry, List); 441 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "%s(): Delete SeqNum " 442 "%d!\n", __func__, 443 pRxReorderEntry->SeqNum); 444 list_del_init(&pRxReorderEntry->List); 445 { 446 int i = 0; 447 struct rtllib_rxb *prxb = pRxReorderEntry->prxb; 448 449 if (unlikely(!prxb)) 450 return; 451 for (i = 0; i < prxb->nr_subframes; i++) 452 dev_kfree_skb(prxb->subframes[i]); 453 kfree(prxb); 454 prxb = NULL; 455 } 456 list_add_tail(&pRxReorderEntry->List, 457 &ieee->RxReorder_Unused_List); 458 } 459 } else { 460 struct tx_ts_record *pTxTS = (struct tx_ts_record *)pTs; 461 462 del_timer_sync(&pTxTS->TsAddBaTimer); 463 } 464} 465 466void RemovePeerTS(struct rtllib_device *ieee, u8 *Addr) 467{ 468 struct ts_common_info *pTS, *pTmpTS; 469 470 printk(KERN_INFO "===========>RemovePeerTS, %pM\n", Addr); 471 472 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Pending_List, List) { 473 if (memcmp(pTS->Addr, Addr, 6) == 0) { 474 RemoveTsEntry(ieee, pTS, TX_DIR); 475 list_del_init(&pTS->List); 476 list_add_tail(&pTS->List, &ieee->Tx_TS_Unused_List); 477 } 478 } 479 480 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Admit_List, List) { 481 if (memcmp(pTS->Addr, Addr, 6) == 0) { 482 printk(KERN_INFO "====>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} 505EXPORT_SYMBOL(RemovePeerTS); 506 507void 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 536void 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, "TsStartAddBaProcess(): " 543 "Delayed Start ADDBA after 60 sec!!\n"); 544 mod_timer(&pTxTS->TsAddBaTimer, jiffies + 545 MSECS(TS_ADDBA_DELAY)); 546 } else { 547 RTLLIB_DEBUG(RTLLIB_DL_BA, "TsStartAddBaProcess(): " 548 "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} 555