2 #include <linux/etherdevice.h>
3 #include <linux/slab.h>
4 #include "rtl819x_TS.h"
6 static void TsSetupTimeOut(unsigned long data)
9 // This is used for WMMSA and ACM , that would send ADDTSReq frame.
12 static void TsInactTimeout(unsigned long data)
15 // This is used for WMMSA and ACM.
16 // This function would be call when TS is no Tx/Rx for some period of time.
19 /********************************************************************************************************************
20 *function: I still not understand this function, so wait for further implementation
21 * input: unsigned long data //acturally we send TX_TS_RECORD or RX_TS_RECORD to these timer
24 ********************************************************************************************************************/
25 static void RxPktPendingTimeout(unsigned long data)
27 PRX_TS_RECORD pRxTs = (PRX_TS_RECORD)data;
28 struct ieee80211_device *ieee = container_of(pRxTs, struct ieee80211_device, RxTsRecord[pRxTs->num]);
30 PRX_REORDER_ENTRY pReorderEntry = NULL;
33 unsigned long flags = 0;
35 bool bPktInBuf = false;
37 spin_lock_irqsave(&(ieee->reorder_spinlock), flags);
38 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"==================>%s()\n",__func__);
39 if(pRxTs->RxTimeoutIndicateSeq != 0xffff) {
40 // Indicate the pending packets sequentially according to SeqNum until meet the gap.
41 while(!list_empty(&pRxTs->RxPendingPktList)) {
42 pReorderEntry = (PRX_REORDER_ENTRY)list_entry(pRxTs->RxPendingPktList.prev,RX_REORDER_ENTRY,List);
44 pRxTs->RxIndicateSeq = pReorderEntry->SeqNum;
46 if( SN_LESS(pReorderEntry->SeqNum, pRxTs->RxIndicateSeq) ||
47 SN_EQUAL(pReorderEntry->SeqNum, pRxTs->RxIndicateSeq) ) {
48 list_del_init(&pReorderEntry->List);
50 if(SN_EQUAL(pReorderEntry->SeqNum, pRxTs->RxIndicateSeq))
51 pRxTs->RxIndicateSeq = (pRxTs->RxIndicateSeq + 1) % 4096;
53 IEEE80211_DEBUG(IEEE80211_DL_REORDER,"RxPktPendingTimeout(): IndicateSeq: %d\n", pReorderEntry->SeqNum);
54 ieee->stats_IndicateArray[index] = pReorderEntry->prxb;
57 list_add_tail(&pReorderEntry->List, &ieee->RxReorder_Unused_List);
66 // Set RxTimeoutIndicateSeq to 0xffff to indicate no pending packets in buffer now.
67 pRxTs->RxTimeoutIndicateSeq = 0xffff;
70 if(index > REORDER_WIN_SIZE) {
71 IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Rx Reorder buffer full!! \n");
72 spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
75 ieee80211_indicate_packets(ieee, ieee->stats_IndicateArray, index);
78 if(bPktInBuf && (pRxTs->RxTimeoutIndicateSeq==0xffff)) {
79 pRxTs->RxTimeoutIndicateSeq = pRxTs->RxIndicateSeq;
80 mod_timer(&pRxTs->RxPktPendingTimer,
81 jiffies + msecs_to_jiffies(ieee->pHTInfo->RxReorderPendingTime));
83 spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
86 /********************************************************************************************************************
87 *function: Add BA timer function
88 * input: unsigned long data //acturally we send TX_TS_RECORD or RX_TS_RECORD to these timer
91 ********************************************************************************************************************/
92 static void TsAddBaProcess(unsigned long data)
94 PTX_TS_RECORD pTxTs = (PTX_TS_RECORD)data;
96 struct ieee80211_device *ieee = container_of(pTxTs, struct ieee80211_device, TxTsRecord[num]);
98 TsInitAddBA(ieee, pTxTs, BA_POLICY_IMMEDIATE, false);
99 IEEE80211_DEBUG(IEEE80211_DL_BA, "TsAddBaProcess(): ADDBA Req is started!! \n");
103 static void ResetTsCommonInfo(PTS_COMMON_INFO pTsCommonInfo)
105 eth_zero_addr(pTsCommonInfo->Addr);
106 memset(&pTsCommonInfo->TSpec, 0, sizeof(TSPEC_BODY));
107 memset(&pTsCommonInfo->TClass, 0, sizeof(QOS_TCLAS)*TCLAS_NUM);
108 pTsCommonInfo->TClasProc = 0;
109 pTsCommonInfo->TClasNum = 0;
112 static void ResetTxTsEntry(PTX_TS_RECORD pTS)
114 ResetTsCommonInfo(&pTS->TsCommonInfo);
116 pTS->bAddBaReqInProgress = false;
117 pTS->bAddBaReqDelayed = false;
118 pTS->bUsingBa = false;
119 ResetBaEntry(&pTS->TxAdmittedBARecord); //For BA Originator
120 ResetBaEntry(&pTS->TxPendingBARecord);
123 static void ResetRxTsEntry(PRX_TS_RECORD pTS)
125 ResetTsCommonInfo(&pTS->TsCommonInfo);
126 pTS->RxIndicateSeq = 0xffff; // This indicate the RxIndicateSeq is not used now!!
127 pTS->RxTimeoutIndicateSeq = 0xffff; // This indicate the RxTimeoutIndicateSeq is not used now!!
128 ResetBaEntry(&pTS->RxAdmittedBARecord); // For BA Recipient
131 void TSInitialize(struct ieee80211_device *ieee)
133 PTX_TS_RECORD pTxTS = ieee->TxTsRecord;
134 PRX_TS_RECORD pRxTS = ieee->RxTsRecord;
135 PRX_REORDER_ENTRY pRxReorderEntry = ieee->RxReorderEntry;
137 IEEE80211_DEBUG(IEEE80211_DL_TS, "==========>%s()\n", __func__);
138 // Initialize Tx TS related info.
139 INIT_LIST_HEAD(&ieee->Tx_TS_Admit_List);
140 INIT_LIST_HEAD(&ieee->Tx_TS_Pending_List);
141 INIT_LIST_HEAD(&ieee->Tx_TS_Unused_List);
143 for(count = 0; count < TOTAL_TS_NUM; count++) {
146 // The timers for the operation of Traffic Stream and Block Ack.
147 // DLS related timer will be add here in the future!!
148 setup_timer(&pTxTS->TsCommonInfo.SetupTimer, TsSetupTimeOut,
149 (unsigned long)pTxTS);
150 setup_timer(&pTxTS->TsCommonInfo.InactTimer, TsInactTimeout,
151 (unsigned long)pTxTS);
152 setup_timer(&pTxTS->TsAddBaTimer, TsAddBaProcess,
153 (unsigned long)pTxTS);
154 setup_timer(&pTxTS->TxPendingBARecord.Timer, BaSetupTimeOut,
155 (unsigned long)pTxTS);
156 setup_timer(&pTxTS->TxAdmittedBARecord.Timer,
157 TxBaInactTimeout, (unsigned long)pTxTS);
158 ResetTxTsEntry(pTxTS);
159 list_add_tail(&pTxTS->TsCommonInfo.List, &ieee->Tx_TS_Unused_List);
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++) {
169 INIT_LIST_HEAD(&pRxTS->RxPendingPktList);
170 setup_timer(&pRxTS->TsCommonInfo.SetupTimer, TsSetupTimeOut,
171 (unsigned long)pRxTS);
172 setup_timer(&pRxTS->TsCommonInfo.InactTimer, TsInactTimeout,
173 (unsigned long)pRxTS);
174 setup_timer(&pRxTS->RxAdmittedBARecord.Timer,
175 RxBaInactTimeout, (unsigned long)pRxTS);
176 setup_timer(&pRxTS->RxPktPendingTimer, RxPktPendingTimeout,
177 (unsigned long)pRxTS);
178 ResetRxTsEntry(pRxTS);
179 list_add_tail(&pRxTS->TsCommonInfo.List, &ieee->Rx_TS_Unused_List);
182 // Initialize unused Rx Reorder List.
183 INIT_LIST_HEAD(&ieee->RxReorder_Unused_List);
185 for(count = 0; count < REORDER_ENTRY_NUM; count++) {
186 list_add_tail( &pRxReorderEntry->List,&ieee->RxReorder_Unused_List);
187 if(count == (REORDER_ENTRY_NUM-1))
189 pRxReorderEntry = &ieee->RxReorderEntry[count+1];
194 static void AdmitTS(struct ieee80211_device *ieee,
195 PTS_COMMON_INFO pTsCommonInfo, u32 InactTime)
197 del_timer_sync(&pTsCommonInfo->SetupTimer);
198 del_timer_sync(&pTsCommonInfo->InactTimer);
201 mod_timer(&pTsCommonInfo->InactTimer,
202 jiffies + msecs_to_jiffies(InactTime));
206 static PTS_COMMON_INFO SearchAdmitTRStream(struct ieee80211_device *ieee,
208 TR_SELECT TxRxSelect)
210 //DIRECTION_VALUE dir;
212 bool search_dir[4] = {0};
213 struct list_head *psearch_list; //FIXME
214 PTS_COMMON_INFO pRet = NULL;
215 if(ieee->iw_mode == IW_MODE_MASTER) { //ap mode
216 if(TxRxSelect == TX_DIR) {
217 search_dir[DIR_DOWN] = true;
218 search_dir[DIR_BI_DIR]= true;
220 search_dir[DIR_UP] = true;
221 search_dir[DIR_BI_DIR]= true;
223 } else if(ieee->iw_mode == IW_MODE_ADHOC) {
224 if(TxRxSelect == TX_DIR)
225 search_dir[DIR_UP] = true;
227 search_dir[DIR_DOWN] = true;
229 if(TxRxSelect == TX_DIR) {
230 search_dir[DIR_UP] = true;
231 search_dir[DIR_BI_DIR]= true;
232 search_dir[DIR_DIRECT]= true;
234 search_dir[DIR_DOWN] = true;
235 search_dir[DIR_BI_DIR]= true;
236 search_dir[DIR_DIRECT]= true;
240 if(TxRxSelect == TX_DIR)
241 psearch_list = &ieee->Tx_TS_Admit_List;
243 psearch_list = &ieee->Rx_TS_Admit_List;
245 //for(dir = DIR_UP; dir <= DIR_BI_DIR; dir++)
246 for(dir = 0; dir <= DIR_BI_DIR; dir++) {
247 if (!search_dir[dir])
249 list_for_each_entry(pRet, psearch_list, List){
250 // IEEE80211_DEBUG(IEEE80211_DL_TS, "ADD:%pM, TID:%d, dir:%d\n", pRet->Addr, pRet->TSpec.f.TSInfo.field.ucTSID, pRet->TSpec.f.TSInfo.field.ucDirection);
251 if (memcmp(pRet->Addr, Addr, 6) == 0)
252 if (pRet->TSpec.f.TSInfo.field.ucTSID == TID)
253 if(pRet->TSpec.f.TSInfo.field.ucDirection == dir) {
254 // printk("Bingo! got it\n");
258 if(&pRet->List != psearch_list)
262 if(&pRet->List != psearch_list)
268 static void MakeTSEntry(PTS_COMMON_INFO pTsCommonInfo, u8 *Addr,
269 PTSPEC_BODY pTSPEC, PQOS_TCLAS pTCLAS, u8 TCLAS_Num,
274 if(pTsCommonInfo == NULL)
277 memcpy(pTsCommonInfo->Addr, Addr, 6);
280 memcpy((u8 *)(&(pTsCommonInfo->TSpec)), (u8 *)pTSPEC, sizeof(TSPEC_BODY));
282 for(count = 0; count < TCLAS_Num; count++)
283 memcpy((u8 *)(&(pTsCommonInfo->TClass[count])), (u8 *)pTCLAS, sizeof(QOS_TCLAS));
285 pTsCommonInfo->TClasProc = TCLAS_Proc;
286 pTsCommonInfo->TClasNum = TCLAS_Num;
291 struct ieee80211_device *ieee,
292 PTS_COMMON_INFO *ppTS,
295 TR_SELECT TxRxSelect, //Rx:1, Tx:0
301 // We do not build any TS for Broadcast or Multicast stream.
302 // So reject these kinds of search here.
304 if (is_multicast_ether_addr(Addr)) {
305 IEEE80211_DEBUG(IEEE80211_DL_ERR, "get TS for Broadcast or Multicast\n");
309 if (ieee->current_network.qos_data.supported == 0) {
312 // In WMM case: we use 4 TID only
313 if (!IsACValid(TID)) {
314 IEEE80211_DEBUG(IEEE80211_DL_ERR, " in %s(), TID(%d) is not valid\n", __func__, TID);
341 *ppTS = SearchAdmitTRStream(
350 IEEE80211_DEBUG(IEEE80211_DL_TS, "add new TS failed(tid:%d)\n", UP);
354 // Create a new Traffic stream for current Tx/Rx
355 // This is for EDCA and WMM to add a new TS.
356 // For HCCA or WMMSA, TS cannot be addmit without negotiation.
359 PQOS_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);
365 struct list_head *pAddmitList =
366 (TxRxSelect == TX_DIR)?
367 (&ieee->Tx_TS_Admit_List):
368 (&ieee->Rx_TS_Admit_List);
370 DIRECTION_VALUE Dir = (ieee->iw_mode == IW_MODE_MASTER)?
371 ((TxRxSelect==TX_DIR)?DIR_DOWN:DIR_UP):
372 ((TxRxSelect==TX_DIR)?DIR_UP:DIR_DOWN);
373 IEEE80211_DEBUG(IEEE80211_DL_TS, "to add Ts\n");
374 if(!list_empty(pUnusedList)) {
375 (*ppTS) = list_entry(pUnusedList->next, TS_COMMON_INFO, List);
376 list_del_init(&(*ppTS)->List);
377 if(TxRxSelect==TX_DIR) {
378 PTX_TS_RECORD tmp = container_of(*ppTS, TX_TS_RECORD, TsCommonInfo);
381 PRX_TS_RECORD tmp = container_of(*ppTS, RX_TS_RECORD, TsCommonInfo);
385 IEEE80211_DEBUG(IEEE80211_DL_TS, "to init current TS, UP:%d, Dir:%d, addr:%pM\n", UP, Dir, Addr);
386 // Prepare TS Info releated field
387 pTSInfo->field.ucTrafficType = 0; // Traffic type: WMM is reserved in this field
388 pTSInfo->field.ucTSID = UP; // TSID
389 pTSInfo->field.ucDirection = Dir; // Direction: if there is DirectLink, this need additional consideration.
390 pTSInfo->field.ucAccessPolicy = 1; // Access policy
391 pTSInfo->field.ucAggregation = 0; // Aggregation
392 pTSInfo->field.ucPSB = 0; // Aggregation
393 pTSInfo->field.ucUP = UP; // User priority
394 pTSInfo->field.ucTSInfoAckPolicy = 0; // Ack policy
395 pTSInfo->field.ucSchedule = 0; // Schedule
397 MakeTSEntry(*ppTS, Addr, &TSpec, NULL, 0, 0);
398 AdmitTS(ieee, *ppTS, 0);
399 list_add_tail(&((*ppTS)->List), pAddmitList);
400 // if there is DirectLink, we need to do additional operation here!!
404 IEEE80211_DEBUG(IEEE80211_DL_ERR, "in function %s() There is not enough TS record to be used!!", __func__);
411 static void RemoveTsEntry(struct ieee80211_device *ieee, PTS_COMMON_INFO pTs,
412 TR_SELECT TxRxSelect)
415 unsigned long flags = 0;
416 del_timer_sync(&pTs->SetupTimer);
417 del_timer_sync(&pTs->InactTimer);
418 TsInitDelBA(ieee, pTs, TxRxSelect);
420 if(TxRxSelect == RX_DIR) {
422 PRX_REORDER_ENTRY pRxReorderEntry;
423 PRX_TS_RECORD pRxTS = (PRX_TS_RECORD)pTs;
424 if(timer_pending(&pRxTS->RxPktPendingTimer))
425 del_timer_sync(&pRxTS->RxPktPendingTimer);
427 while(!list_empty(&pRxTS->RxPendingPktList)) {
428 spin_lock_irqsave(&(ieee->reorder_spinlock), flags);
429 //pRxReorderEntry = list_entry(&pRxTS->RxPendingPktList.prev,RX_REORDER_ENTRY,List);
430 pRxReorderEntry = (PRX_REORDER_ENTRY)list_entry(pRxTS->RxPendingPktList.prev,RX_REORDER_ENTRY,List);
431 list_del_init(&pRxReorderEntry->List);
434 struct ieee80211_rxb *prxb = pRxReorderEntry->prxb;
435 if (unlikely(!prxb)) {
436 spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
439 for(i =0; i < prxb->nr_subframes; i++)
440 dev_kfree_skb(prxb->subframes[i]);
445 list_add_tail(&pRxReorderEntry->List,&ieee->RxReorder_Unused_List);
446 spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
451 PTX_TS_RECORD pTxTS = (PTX_TS_RECORD)pTs;
452 del_timer_sync(&pTxTS->TsAddBaTimer);
456 void RemovePeerTS(struct ieee80211_device *ieee, u8 *Addr)
458 PTS_COMMON_INFO pTS, pTmpTS;
460 printk("===========>RemovePeerTS,%pM\n", Addr);
461 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Pending_List, List) {
462 if (memcmp(pTS->Addr, Addr, 6) == 0) {
463 RemoveTsEntry(ieee, pTS, TX_DIR);
464 list_del_init(&pTS->List);
465 list_add_tail(&pTS->List, &ieee->Tx_TS_Unused_List);
469 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Admit_List, List) {
470 if (memcmp(pTS->Addr, Addr, 6) == 0) {
471 printk("====>remove Tx_TS_admin_list\n");
472 RemoveTsEntry(ieee, pTS, TX_DIR);
473 list_del_init(&pTS->List);
474 list_add_tail(&pTS->List, &ieee->Tx_TS_Unused_List);
478 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Pending_List, List) {
479 if (memcmp(pTS->Addr, Addr, 6) == 0) {
480 RemoveTsEntry(ieee, pTS, RX_DIR);
481 list_del_init(&pTS->List);
482 list_add_tail(&pTS->List, &ieee->Rx_TS_Unused_List);
486 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Admit_List, List) {
487 if (memcmp(pTS->Addr, Addr, 6) == 0) {
488 RemoveTsEntry(ieee, pTS, RX_DIR);
489 list_del_init(&pTS->List);
490 list_add_tail(&pTS->List, &ieee->Rx_TS_Unused_List);
495 void RemoveAllTS(struct ieee80211_device *ieee)
497 PTS_COMMON_INFO pTS, pTmpTS;
499 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Pending_List, List) {
500 RemoveTsEntry(ieee, pTS, TX_DIR);
501 list_del_init(&pTS->List);
502 list_add_tail(&pTS->List, &ieee->Tx_TS_Unused_List);
505 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Admit_List, List) {
506 RemoveTsEntry(ieee, pTS, TX_DIR);
507 list_del_init(&pTS->List);
508 list_add_tail(&pTS->List, &ieee->Tx_TS_Unused_List);
511 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Pending_List, List) {
512 RemoveTsEntry(ieee, pTS, RX_DIR);
513 list_del_init(&pTS->List);
514 list_add_tail(&pTS->List, &ieee->Rx_TS_Unused_List);
517 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Admit_List, List) {
518 RemoveTsEntry(ieee, pTS, RX_DIR);
519 list_del_init(&pTS->List);
520 list_add_tail(&pTS->List, &ieee->Rx_TS_Unused_List);
524 void TsStartAddBaProcess(struct ieee80211_device *ieee, PTX_TS_RECORD pTxTS)
526 if(!pTxTS->bAddBaReqInProgress) {
527 pTxTS->bAddBaReqInProgress = true;
528 if(pTxTS->bAddBaReqDelayed) {
529 IEEE80211_DEBUG(IEEE80211_DL_BA, "TsStartAddBaProcess(): Delayed Start ADDBA after 60 sec!!\n");
530 mod_timer(&pTxTS->TsAddBaTimer,
531 jiffies + msecs_to_jiffies(TS_ADDBA_DELAY));
533 IEEE80211_DEBUG(IEEE80211_DL_BA,"TsStartAddBaProcess(): Immediately Start ADDBA now!!\n");
534 mod_timer(&pTxTS->TsAddBaTimer, jiffies+10); //set 10 ticks
537 IEEE80211_DEBUG(IEEE80211_DL_ERR, "%s()==>BA timer is already added\n", __func__);