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 * The full GNU General Public License is included in this distribution in the
10 * file called LICENSE.
11 *
12 * Contact Information:
13 * wlanfae <wlanfae@realtek.com>
14 ******************************************************************************/
15 #include "rtllib.h"
16 #include <linux/etherdevice.h>
17 #include "rtl819x_TS.h"
18
TsSetupTimeOut(unsigned long data)19 static void TsSetupTimeOut(unsigned long data)
20 {
21 }
22
TsInactTimeout(unsigned long data)23 static void TsInactTimeout(unsigned long data)
24 {
25 }
26
RxPktPendingTimeout(unsigned long data)27 static void RxPktPendingTimeout(unsigned long data)
28 {
29 struct rx_ts_record *pRxTs = (struct rx_ts_record *)data;
30 struct rtllib_device *ieee = container_of(pRxTs, struct rtllib_device,
31 RxTsRecord[pRxTs->num]);
32
33 struct rx_reorder_entry *pReorderEntry = NULL;
34
35 unsigned long flags = 0;
36 u8 index = 0;
37 bool bPktInBuf = false;
38
39 spin_lock_irqsave(&(ieee->reorder_spinlock), flags);
40 if (pRxTs->RxTimeoutIndicateSeq != 0xffff) {
41 while (!list_empty(&pRxTs->RxPendingPktList)) {
42 pReorderEntry = (struct rx_reorder_entry *)
43 list_entry(pRxTs->RxPendingPktList.prev,
44 struct rx_reorder_entry, List);
45 if (index == 0)
46 pRxTs->RxIndicateSeq = pReorderEntry->SeqNum;
47
48 if (SN_LESS(pReorderEntry->SeqNum,
49 pRxTs->RxIndicateSeq) ||
50 SN_EQUAL(pReorderEntry->SeqNum,
51 pRxTs->RxIndicateSeq)) {
52 list_del_init(&pReorderEntry->List);
53
54 if (SN_EQUAL(pReorderEntry->SeqNum,
55 pRxTs->RxIndicateSeq))
56 pRxTs->RxIndicateSeq =
57 (pRxTs->RxIndicateSeq + 1) % 4096;
58
59 netdev_dbg(ieee->dev,
60 "%s(): Indicate SeqNum: %d\n",
61 __func__, pReorderEntry->SeqNum);
62 ieee->stats_IndicateArray[index] =
63 pReorderEntry->prxb;
64 index++;
65
66 list_add_tail(&pReorderEntry->List,
67 &ieee->RxReorder_Unused_List);
68 } else {
69 bPktInBuf = true;
70 break;
71 }
72 }
73 }
74
75 if (index > 0) {
76 pRxTs->RxTimeoutIndicateSeq = 0xffff;
77
78 if (index > REORDER_WIN_SIZE) {
79 netdev_warn(ieee->dev,
80 "%s(): Rx Reorder struct buffer full\n",
81 __func__);
82 spin_unlock_irqrestore(&(ieee->reorder_spinlock),
83 flags);
84 return;
85 }
86 rtllib_indicate_packets(ieee, ieee->stats_IndicateArray, index);
87 bPktInBuf = false;
88 }
89
90 if (bPktInBuf && (pRxTs->RxTimeoutIndicateSeq == 0xffff)) {
91 pRxTs->RxTimeoutIndicateSeq = pRxTs->RxIndicateSeq;
92 mod_timer(&pRxTs->RxPktPendingTimer, jiffies +
93 msecs_to_jiffies(ieee->pHTInfo->RxReorderPendingTime)
94 );
95 }
96 spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
97 }
98
TsAddBaProcess(unsigned long data)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 netdev_dbg(ieee->dev, "%s(): ADDBA Req is started\n", __func__);
108 }
109
ResetTsCommonInfo(struct ts_common_info * pTsCommonInfo)110 static void ResetTsCommonInfo(struct ts_common_info *pTsCommonInfo)
111 {
112 eth_zero_addr(pTsCommonInfo->Addr);
113 memset(&pTsCommonInfo->TSpec, 0, sizeof(union tspec_body));
114 memset(&pTsCommonInfo->TClass, 0, sizeof(union qos_tclas)*TCLAS_NUM);
115 pTsCommonInfo->TClasProc = 0;
116 pTsCommonInfo->TClasNum = 0;
117 }
118
ResetTxTsEntry(struct tx_ts_record * pTS)119 static void ResetTxTsEntry(struct tx_ts_record *pTS)
120 {
121 ResetTsCommonInfo(&pTS->TsCommonInfo);
122 pTS->TxCurSeq = 0;
123 pTS->bAddBaReqInProgress = false;
124 pTS->bAddBaReqDelayed = false;
125 pTS->bUsingBa = false;
126 pTS->bDisable_AddBa = false;
127 ResetBaEntry(&pTS->TxAdmittedBARecord);
128 ResetBaEntry(&pTS->TxPendingBARecord);
129 }
130
ResetRxTsEntry(struct rx_ts_record * pTS)131 static void ResetRxTsEntry(struct rx_ts_record *pTS)
132 {
133 ResetTsCommonInfo(&pTS->TsCommonInfo);
134 pTS->RxIndicateSeq = 0xffff;
135 pTS->RxTimeoutIndicateSeq = 0xffff;
136 ResetBaEntry(&pTS->RxAdmittedBARecord);
137 }
138
TSInitialize(struct rtllib_device * ieee)139 void TSInitialize(struct rtllib_device *ieee)
140 {
141 struct tx_ts_record *pTxTS = ieee->TxTsRecord;
142 struct rx_ts_record *pRxTS = ieee->RxTsRecord;
143 struct rx_reorder_entry *pRxReorderEntry = ieee->RxReorderEntry;
144 u8 count = 0;
145
146 netdev_vdbg(ieee->dev, "%s()\n", __func__);
147 INIT_LIST_HEAD(&ieee->Tx_TS_Admit_List);
148 INIT_LIST_HEAD(&ieee->Tx_TS_Pending_List);
149 INIT_LIST_HEAD(&ieee->Tx_TS_Unused_List);
150
151 for (count = 0; count < TOTAL_TS_NUM; count++) {
152 pTxTS->num = count;
153 setup_timer(&pTxTS->TsCommonInfo.SetupTimer,
154 TsSetupTimeOut,
155 (unsigned long) pTxTS);
156
157 setup_timer(&pTxTS->TsCommonInfo.InactTimer,
158 TsInactTimeout,
159 (unsigned long) pTxTS);
160
161 setup_timer(&pTxTS->TsAddBaTimer,
162 TsAddBaProcess,
163 (unsigned long) pTxTS);
164
165 setup_timer(&pTxTS->TxPendingBARecord.Timer,
166 BaSetupTimeOut,
167 (unsigned long) pTxTS);
168 setup_timer(&pTxTS->TxAdmittedBARecord.Timer,
169 TxBaInactTimeout,
170 (unsigned long) pTxTS);
171
172 ResetTxTsEntry(pTxTS);
173 list_add_tail(&pTxTS->TsCommonInfo.List,
174 &ieee->Tx_TS_Unused_List);
175 pTxTS++;
176 }
177
178 INIT_LIST_HEAD(&ieee->Rx_TS_Admit_List);
179 INIT_LIST_HEAD(&ieee->Rx_TS_Pending_List);
180 INIT_LIST_HEAD(&ieee->Rx_TS_Unused_List);
181 for (count = 0; count < TOTAL_TS_NUM; count++) {
182 pRxTS->num = count;
183 INIT_LIST_HEAD(&pRxTS->RxPendingPktList);
184
185 setup_timer(&pRxTS->TsCommonInfo.SetupTimer,
186 TsSetupTimeOut,
187 (unsigned long) pRxTS);
188
189 setup_timer(&pRxTS->TsCommonInfo.InactTimer,
190 TsInactTimeout,
191 (unsigned long) pRxTS);
192
193 setup_timer(&pRxTS->RxAdmittedBARecord.Timer,
194 RxBaInactTimeout,
195 (unsigned long) pRxTS);
196
197 setup_timer(&pRxTS->RxPktPendingTimer,
198 RxPktPendingTimeout,
199 (unsigned long) pRxTS);
200
201 ResetRxTsEntry(pRxTS);
202 list_add_tail(&pRxTS->TsCommonInfo.List,
203 &ieee->Rx_TS_Unused_List);
204 pRxTS++;
205 }
206 INIT_LIST_HEAD(&ieee->RxReorder_Unused_List);
207 for (count = 0; count < REORDER_ENTRY_NUM; count++) {
208 list_add_tail(&pRxReorderEntry->List,
209 &ieee->RxReorder_Unused_List);
210 if (count == (REORDER_ENTRY_NUM-1))
211 break;
212 pRxReorderEntry = &ieee->RxReorderEntry[count+1];
213 }
214
215 }
216
AdmitTS(struct rtllib_device * ieee,struct ts_common_info * pTsCommonInfo,u32 InactTime)217 static void AdmitTS(struct rtllib_device *ieee,
218 struct ts_common_info *pTsCommonInfo, u32 InactTime)
219 {
220 del_timer_sync(&pTsCommonInfo->SetupTimer);
221 del_timer_sync(&pTsCommonInfo->InactTimer);
222
223 if (InactTime != 0)
224 mod_timer(&pTsCommonInfo->InactTimer, jiffies +
225 msecs_to_jiffies(InactTime));
226 }
227
SearchAdmitTRStream(struct rtllib_device * ieee,u8 * Addr,u8 TID,enum tr_select TxRxSelect)228 static struct ts_common_info *SearchAdmitTRStream(struct rtllib_device *ieee,
229 u8 *Addr, u8 TID,
230 enum tr_select TxRxSelect)
231 {
232 u8 dir;
233 bool search_dir[4] = {0};
234 struct list_head *psearch_list;
235 struct ts_common_info *pRet = NULL;
236
237 if (ieee->iw_mode == IW_MODE_MASTER) {
238 if (TxRxSelect == TX_DIR) {
239 search_dir[DIR_DOWN] = true;
240 search_dir[DIR_BI_DIR] = true;
241 } else {
242 search_dir[DIR_UP] = true;
243 search_dir[DIR_BI_DIR] = true;
244 }
245 } else if (ieee->iw_mode == IW_MODE_ADHOC) {
246 if (TxRxSelect == TX_DIR)
247 search_dir[DIR_UP] = true;
248 else
249 search_dir[DIR_DOWN] = true;
250 } else {
251 if (TxRxSelect == TX_DIR) {
252 search_dir[DIR_UP] = true;
253 search_dir[DIR_BI_DIR] = true;
254 search_dir[DIR_DIRECT] = true;
255 } else {
256 search_dir[DIR_DOWN] = true;
257 search_dir[DIR_BI_DIR] = true;
258 search_dir[DIR_DIRECT] = true;
259 }
260 }
261
262 if (TxRxSelect == TX_DIR)
263 psearch_list = &ieee->Tx_TS_Admit_List;
264 else
265 psearch_list = &ieee->Rx_TS_Admit_List;
266
267 for (dir = 0; dir <= DIR_BI_DIR; dir++) {
268 if (!search_dir[dir])
269 continue;
270 list_for_each_entry(pRet, psearch_list, List) {
271 if (memcmp(pRet->Addr, Addr, 6) == 0 &&
272 pRet->TSpec.f.TSInfo.field.ucTSID == TID &&
273 pRet->TSpec.f.TSInfo.field.ucDirection == dir)
274 break;
275
276 }
277 if (&pRet->List != psearch_list)
278 break;
279 }
280
281 if (pRet && &pRet->List != psearch_list)
282 return pRet;
283 return NULL;
284 }
285
MakeTSEntry(struct ts_common_info * pTsCommonInfo,u8 * Addr,union tspec_body * pTSPEC,union qos_tclas * pTCLAS,u8 TCLAS_Num,u8 TCLAS_Proc)286 static void MakeTSEntry(struct ts_common_info *pTsCommonInfo, u8 *Addr,
287 union tspec_body *pTSPEC, union qos_tclas *pTCLAS,
288 u8 TCLAS_Num, u8 TCLAS_Proc)
289 {
290 u8 count;
291
292 if (pTsCommonInfo == NULL)
293 return;
294
295 memcpy(pTsCommonInfo->Addr, Addr, 6);
296
297 if (pTSPEC != NULL)
298 memcpy((u8 *)(&(pTsCommonInfo->TSpec)), (u8 *)pTSPEC,
299 sizeof(union tspec_body));
300
301 for (count = 0; count < TCLAS_Num; count++)
302 memcpy((u8 *)(&(pTsCommonInfo->TClass[count])),
303 (u8 *)pTCLAS, sizeof(union qos_tclas));
304
305 pTsCommonInfo->TClasProc = TCLAS_Proc;
306 pTsCommonInfo->TClasNum = TCLAS_Num;
307 }
308
GetTs(struct rtllib_device * ieee,struct ts_common_info ** ppTS,u8 * Addr,u8 TID,enum tr_select TxRxSelect,bool bAddNewTs)309 bool GetTs(struct rtllib_device *ieee, struct ts_common_info **ppTS,
310 u8 *Addr, u8 TID, enum tr_select TxRxSelect, bool bAddNewTs)
311 {
312 u8 UP = 0;
313 union tspec_body TSpec;
314 union qos_tsinfo *pTSInfo = &TSpec.f.TSInfo;
315 struct list_head *pUnusedList;
316 struct list_head *pAddmitList;
317 enum direction_value Dir;
318
319 if (is_multicast_ether_addr(Addr)) {
320 netdev_warn(ieee->dev, "Get TS for Broadcast or Multicast\n");
321 return false;
322 }
323 if (ieee->current_network.qos_data.supported == 0) {
324 UP = 0;
325 } else {
326 if (!IsACValid(TID)) {
327 netdev_warn(ieee->dev, "%s(): TID(%d) is not valid\n",
328 __func__, TID);
329 return false;
330 }
331
332 switch (TID) {
333 case 0:
334 case 3:
335 UP = 0;
336 break;
337 case 1:
338 case 2:
339 UP = 2;
340 break;
341 case 4:
342 case 5:
343 UP = 5;
344 break;
345 case 6:
346 case 7:
347 UP = 7;
348 break;
349 }
350 }
351
352 *ppTS = SearchAdmitTRStream(ieee, Addr, UP, TxRxSelect);
353 if (*ppTS != NULL)
354 return true;
355
356 if (!bAddNewTs) {
357 netdev_dbg(ieee->dev, "add new TS failed(tid:%d)\n", UP);
358 return false;
359 }
360
361 pUnusedList = (TxRxSelect == TX_DIR) ?
362 (&ieee->Tx_TS_Unused_List) :
363 (&ieee->Rx_TS_Unused_List);
364
365 pAddmitList = (TxRxSelect == TX_DIR) ?
366 (&ieee->Tx_TS_Admit_List) :
367 (&ieee->Rx_TS_Admit_List);
368
369 Dir = (ieee->iw_mode == IW_MODE_MASTER) ?
370 ((TxRxSelect == TX_DIR) ? DIR_DOWN : DIR_UP) :
371 ((TxRxSelect == TX_DIR) ? DIR_UP : DIR_DOWN);
372
373 if (!list_empty(pUnusedList)) {
374 (*ppTS) = list_entry(pUnusedList->next,
375 struct ts_common_info, List);
376 list_del_init(&(*ppTS)->List);
377 if (TxRxSelect == TX_DIR) {
378 struct tx_ts_record *tmp =
379 container_of(*ppTS,
380 struct tx_ts_record,
381 TsCommonInfo);
382 ResetTxTsEntry(tmp);
383 } else {
384 struct rx_ts_record *tmp =
385 container_of(*ppTS,
386 struct rx_ts_record,
387 TsCommonInfo);
388 ResetRxTsEntry(tmp);
389 }
390
391 netdev_dbg(ieee->dev,
392 "to init current TS, UP:%d, Dir:%d, addr: %pM ppTs=%p\n",
393 UP, Dir, Addr, *ppTS);
394 pTSInfo->field.ucTrafficType = 0;
395 pTSInfo->field.ucTSID = UP;
396 pTSInfo->field.ucDirection = Dir;
397 pTSInfo->field.ucAccessPolicy = 1;
398 pTSInfo->field.ucAggregation = 0;
399 pTSInfo->field.ucPSB = 0;
400 pTSInfo->field.ucUP = UP;
401 pTSInfo->field.ucTSInfoAckPolicy = 0;
402 pTSInfo->field.ucSchedule = 0;
403
404 MakeTSEntry(*ppTS, Addr, &TSpec, NULL, 0, 0);
405 AdmitTS(ieee, *ppTS, 0);
406 list_add_tail(&((*ppTS)->List), pAddmitList);
407
408 return true;
409 }
410
411 netdev_warn(ieee->dev,
412 "There is not enough dir=%d(0=up down=1) TS record to be used!",
413 Dir);
414 return false;
415 }
416
RemoveTsEntry(struct rtllib_device * ieee,struct ts_common_info * pTs,enum tr_select TxRxSelect)417 static void RemoveTsEntry(struct rtllib_device *ieee,
418 struct ts_common_info *pTs, enum tr_select TxRxSelect)
419 {
420 del_timer_sync(&pTs->SetupTimer);
421 del_timer_sync(&pTs->InactTimer);
422 TsInitDelBA(ieee, pTs, TxRxSelect);
423
424 if (TxRxSelect == RX_DIR) {
425 struct rx_reorder_entry *pRxReorderEntry;
426 struct rx_ts_record *pRxTS = (struct rx_ts_record *)pTs;
427
428 if (timer_pending(&pRxTS->RxPktPendingTimer))
429 del_timer_sync(&pRxTS->RxPktPendingTimer);
430
431 while (!list_empty(&pRxTS->RxPendingPktList)) {
432 pRxReorderEntry = (struct rx_reorder_entry *)
433 list_entry(pRxTS->RxPendingPktList.prev,
434 struct rx_reorder_entry, List);
435 netdev_dbg(ieee->dev, "%s(): Delete SeqNum %d!\n",
436 __func__, pRxReorderEntry->SeqNum);
437 list_del_init(&pRxReorderEntry->List);
438 {
439 int i = 0;
440 struct rtllib_rxb *prxb = pRxReorderEntry->prxb;
441
442 if (unlikely(!prxb))
443 return;
444 for (i = 0; i < prxb->nr_subframes; i++)
445 dev_kfree_skb(prxb->subframes[i]);
446 kfree(prxb);
447 prxb = NULL;
448 }
449 list_add_tail(&pRxReorderEntry->List,
450 &ieee->RxReorder_Unused_List);
451 }
452 } else {
453 struct tx_ts_record *pTxTS = (struct tx_ts_record *)pTs;
454
455 del_timer_sync(&pTxTS->TsAddBaTimer);
456 }
457 }
458
RemovePeerTS(struct rtllib_device * ieee,u8 * Addr)459 void RemovePeerTS(struct rtllib_device *ieee, u8 *Addr)
460 {
461 struct ts_common_info *pTS, *pTmpTS;
462
463 netdev_info(ieee->dev, "===========>RemovePeerTS, %pM\n", Addr);
464
465 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Pending_List, List) {
466 if (memcmp(pTS->Addr, Addr, 6) == 0) {
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->Tx_TS_Admit_List, List) {
474 if (memcmp(pTS->Addr, Addr, 6) == 0) {
475 netdev_info(ieee->dev,
476 "====>remove Tx_TS_admin_list\n");
477 RemoveTsEntry(ieee, pTS, TX_DIR);
478 list_del_init(&pTS->List);
479 list_add_tail(&pTS->List, &ieee->Tx_TS_Unused_List);
480 }
481 }
482
483 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Pending_List, List) {
484 if (memcmp(pTS->Addr, Addr, 6) == 0) {
485 RemoveTsEntry(ieee, pTS, RX_DIR);
486 list_del_init(&pTS->List);
487 list_add_tail(&pTS->List, &ieee->Rx_TS_Unused_List);
488 }
489 }
490
491 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Admit_List, List) {
492 if (memcmp(pTS->Addr, Addr, 6) == 0) {
493 RemoveTsEntry(ieee, pTS, RX_DIR);
494 list_del_init(&pTS->List);
495 list_add_tail(&pTS->List, &ieee->Rx_TS_Unused_List);
496 }
497 }
498 }
499 EXPORT_SYMBOL(RemovePeerTS);
500
RemoveAllTS(struct rtllib_device * ieee)501 void RemoveAllTS(struct rtllib_device *ieee)
502 {
503 struct ts_common_info *pTS, *pTmpTS;
504
505 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Pending_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);
509 }
510
511 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Admit_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->Rx_TS_Pending_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);
521 }
522
523 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Admit_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
TsStartAddBaProcess(struct rtllib_device * ieee,struct tx_ts_record * pTxTS)530 void TsStartAddBaProcess(struct rtllib_device *ieee, struct tx_ts_record *pTxTS)
531 {
532 if (pTxTS->bAddBaReqInProgress == false) {
533 pTxTS->bAddBaReqInProgress = true;
534
535 if (pTxTS->bAddBaReqDelayed) {
536 netdev_dbg(ieee->dev, "Start ADDBA after 60 sec!!\n");
537 mod_timer(&pTxTS->TsAddBaTimer, jiffies +
538 msecs_to_jiffies(TS_ADDBA_DELAY));
539 } else {
540 netdev_dbg(ieee->dev, "Immediately Start ADDBA\n");
541 mod_timer(&pTxTS->TsAddBaTimer, jiffies+10);
542 }
543 } else
544 netdev_dbg(ieee->dev, "BA timer is already added\n");
545 }
546