1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright(c) 2008 - 2010 Realtek Corporation. All rights reserved.
4 *
5 * Contact Information: wlanfae <wlanfae@realtek.com>
6 */
7 #include "rtllib.h"
8 #include <linux/etherdevice.h>
9 #include "rtl819x_TS.h"
10
TsSetupTimeOut(struct timer_list * unused)11 static void TsSetupTimeOut(struct timer_list *unused)
12 {
13 }
14
TsInactTimeout(struct timer_list * unused)15 static void TsInactTimeout(struct timer_list *unused)
16 {
17 }
18
RxPktPendingTimeout(struct timer_list * t)19 static void RxPktPendingTimeout(struct timer_list *t)
20 {
21 struct rx_ts_record *pRxTs = from_timer(pRxTs, t,
22 rx_pkt_pending_timer);
23 struct rtllib_device *ieee = container_of(pRxTs, struct rtllib_device,
24 RxTsRecord[pRxTs->num]);
25
26 struct rx_reorder_entry *pReorderEntry = NULL;
27
28 unsigned long flags = 0;
29 u8 index = 0;
30 bool bPktInBuf = false;
31
32 spin_lock_irqsave(&(ieee->reorder_spinlock), flags);
33 if (pRxTs->rx_timeout_indicate_seq != 0xffff) {
34 while (!list_empty(&pRxTs->rx_pending_pkt_list)) {
35 pReorderEntry = (struct rx_reorder_entry *)
36 list_entry(pRxTs->rx_pending_pkt_list.prev,
37 struct rx_reorder_entry, List);
38 if (index == 0)
39 pRxTs->rx_indicate_seq = pReorderEntry->SeqNum;
40
41 if (SN_LESS(pReorderEntry->SeqNum,
42 pRxTs->rx_indicate_seq) ||
43 SN_EQUAL(pReorderEntry->SeqNum,
44 pRxTs->rx_indicate_seq)) {
45 list_del_init(&pReorderEntry->List);
46
47 if (SN_EQUAL(pReorderEntry->SeqNum,
48 pRxTs->rx_indicate_seq))
49 pRxTs->rx_indicate_seq =
50 (pRxTs->rx_indicate_seq + 1) % 4096;
51
52 netdev_dbg(ieee->dev,
53 "%s(): Indicate SeqNum: %d\n",
54 __func__, pReorderEntry->SeqNum);
55 ieee->stats_IndicateArray[index] =
56 pReorderEntry->prxb;
57 index++;
58
59 list_add_tail(&pReorderEntry->List,
60 &ieee->RxReorder_Unused_List);
61 } else {
62 bPktInBuf = true;
63 break;
64 }
65 }
66 }
67
68 if (index > 0) {
69 pRxTs->rx_timeout_indicate_seq = 0xffff;
70
71 if (index > REORDER_WIN_SIZE) {
72 netdev_warn(ieee->dev,
73 "%s(): Rx Reorder struct buffer full\n",
74 __func__);
75 spin_unlock_irqrestore(&(ieee->reorder_spinlock),
76 flags);
77 return;
78 }
79 rtllib_indicate_packets(ieee, ieee->stats_IndicateArray, index);
80 bPktInBuf = false;
81 }
82
83 if (bPktInBuf && (pRxTs->rx_timeout_indicate_seq == 0xffff)) {
84 pRxTs->rx_timeout_indicate_seq = pRxTs->rx_indicate_seq;
85 mod_timer(&pRxTs->rx_pkt_pending_timer, jiffies +
86 msecs_to_jiffies(ieee->pHTInfo->rx_reorder_pending_time)
87 );
88 }
89 spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
90 }
91
TsAddBaProcess(struct timer_list * t)92 static void TsAddBaProcess(struct timer_list *t)
93 {
94 struct tx_ts_record *pTxTs = from_timer(pTxTs, t, TsAddBaTimer);
95 u8 num = pTxTs->num;
96 struct rtllib_device *ieee = container_of(pTxTs, struct rtllib_device,
97 TxTsRecord[num]);
98
99 TsInitAddBA(ieee, pTxTs, BA_POLICY_IMMEDIATE, false);
100 netdev_dbg(ieee->dev, "%s(): ADDBA Req is started\n", __func__);
101 }
102
ResetTsCommonInfo(struct ts_common_info * pTsCommonInfo)103 static void ResetTsCommonInfo(struct ts_common_info *pTsCommonInfo)
104 {
105 eth_zero_addr(pTsCommonInfo->Addr);
106 memset(&pTsCommonInfo->TSpec, 0, sizeof(union tspec_body));
107 memset(&pTsCommonInfo->TClass, 0, sizeof(union qos_tclas) * TCLAS_NUM);
108 pTsCommonInfo->TClasProc = 0;
109 pTsCommonInfo->TClasNum = 0;
110 }
111
ResetTxTsEntry(struct tx_ts_record * pTS)112 static void ResetTxTsEntry(struct tx_ts_record *pTS)
113 {
114 ResetTsCommonInfo(&pTS->TsCommonInfo);
115 pTS->TxCurSeq = 0;
116 pTS->bAddBaReqInProgress = false;
117 pTS->bAddBaReqDelayed = false;
118 pTS->bUsingBa = false;
119 pTS->bDisable_AddBa = false;
120 ResetBaEntry(&pTS->TxAdmittedBARecord);
121 ResetBaEntry(&pTS->TxPendingBARecord);
122 }
123
ResetRxTsEntry(struct rx_ts_record * pTS)124 static void ResetRxTsEntry(struct rx_ts_record *pTS)
125 {
126 ResetTsCommonInfo(&pTS->ts_common_info);
127 pTS->rx_indicate_seq = 0xffff;
128 pTS->rx_timeout_indicate_seq = 0xffff;
129 ResetBaEntry(&pTS->rx_admitted_ba_record);
130 }
131
TSInitialize(struct rtllib_device * ieee)132 void TSInitialize(struct rtllib_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
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);
142
143 for (count = 0; count < TOTAL_TS_NUM; count++) {
144 pTxTS->num = count;
145 timer_setup(&pTxTS->TsCommonInfo.SetupTimer, TsSetupTimeOut,
146 0);
147
148 timer_setup(&pTxTS->TsCommonInfo.InactTimer, TsInactTimeout,
149 0);
150
151 timer_setup(&pTxTS->TsAddBaTimer, TsAddBaProcess, 0);
152
153 timer_setup(&pTxTS->TxPendingBARecord.timer, BaSetupTimeOut,
154 0);
155 timer_setup(&pTxTS->TxAdmittedBARecord.timer,
156 TxBaInactTimeout, 0);
157
158 ResetTxTsEntry(pTxTS);
159 list_add_tail(&pTxTS->TsCommonInfo.List,
160 &ieee->Tx_TS_Unused_List);
161 pTxTS++;
162 }
163
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
171 timer_setup(&pRxTS->ts_common_info.SetupTimer, TsSetupTimeOut,
172 0);
173
174 timer_setup(&pRxTS->ts_common_info.InactTimer, TsInactTimeout,
175 0);
176
177 timer_setup(&pRxTS->rx_admitted_ba_record.timer,
178 RxBaInactTimeout, 0);
179
180 timer_setup(&pRxTS->rx_pkt_pending_timer, RxPktPendingTimeout, 0);
181
182 ResetRxTsEntry(pRxTS);
183 list_add_tail(&pRxTS->ts_common_info.List,
184 &ieee->Rx_TS_Unused_List);
185 pRxTS++;
186 }
187 INIT_LIST_HEAD(&ieee->RxReorder_Unused_List);
188 for (count = 0; count < REORDER_ENTRY_NUM; count++) {
189 list_add_tail(&pRxReorderEntry->List,
190 &ieee->RxReorder_Unused_List);
191 if (count == (REORDER_ENTRY_NUM - 1))
192 break;
193 pRxReorderEntry = &ieee->RxReorderEntry[count + 1];
194 }
195 }
196
AdmitTS(struct rtllib_device * ieee,struct ts_common_info * pTsCommonInfo,u32 InactTime)197 static void AdmitTS(struct rtllib_device *ieee,
198 struct ts_common_info *pTsCommonInfo, u32 InactTime)
199 {
200 del_timer_sync(&pTsCommonInfo->SetupTimer);
201 del_timer_sync(&pTsCommonInfo->InactTimer);
202
203 if (InactTime != 0)
204 mod_timer(&pTsCommonInfo->InactTimer, jiffies +
205 msecs_to_jiffies(InactTime));
206 }
207
SearchAdmitTRStream(struct rtllib_device * ieee,u8 * Addr,u8 TID,enum tr_select TxRxSelect)208 static struct ts_common_info *SearchAdmitTRStream(struct rtllib_device *ieee,
209 u8 *Addr, u8 TID,
210 enum tr_select TxRxSelect)
211 {
212 u8 dir;
213 bool search_dir[4] = {0};
214 struct list_head *psearch_list;
215 struct ts_common_info *pRet = NULL;
216
217 if (ieee->iw_mode == IW_MODE_MASTER) {
218 if (TxRxSelect == TX_DIR) {
219 search_dir[DIR_DOWN] = true;
220 search_dir[DIR_BI_DIR] = true;
221 } else {
222 search_dir[DIR_UP] = true;
223 search_dir[DIR_BI_DIR] = true;
224 }
225 } else if (ieee->iw_mode == IW_MODE_ADHOC) {
226 if (TxRxSelect == TX_DIR)
227 search_dir[DIR_UP] = true;
228 else
229 search_dir[DIR_DOWN] = true;
230 } else {
231 if (TxRxSelect == TX_DIR) {
232 search_dir[DIR_UP] = true;
233 search_dir[DIR_BI_DIR] = true;
234 search_dir[DIR_DIRECT] = true;
235 } else {
236 search_dir[DIR_DOWN] = true;
237 search_dir[DIR_BI_DIR] = true;
238 search_dir[DIR_DIRECT] = true;
239 }
240 }
241
242 if (TxRxSelect == TX_DIR)
243 psearch_list = &ieee->Tx_TS_Admit_List;
244 else
245 psearch_list = &ieee->Rx_TS_Admit_List;
246
247 for (dir = 0; dir <= DIR_BI_DIR; dir++) {
248 if (!search_dir[dir])
249 continue;
250 list_for_each_entry(pRet, psearch_list, List) {
251 if (memcmp(pRet->Addr, Addr, 6) == 0 &&
252 pRet->TSpec.f.TSInfo.field.ucTSID == TID &&
253 pRet->TSpec.f.TSInfo.field.ucDirection == dir)
254 break;
255 }
256 if (&pRet->List != psearch_list)
257 break;
258 }
259
260 if (pRet && &pRet->List != psearch_list)
261 return pRet;
262 return NULL;
263 }
264
MakeTSEntry(struct ts_common_info * pTsCommonInfo,u8 * Addr,union tspec_body * pTSPEC,union qos_tclas * pTCLAS,u8 TCLAS_Num,u8 TCLAS_Proc)265 static void MakeTSEntry(struct ts_common_info *pTsCommonInfo, u8 *Addr,
266 union tspec_body *pTSPEC, union qos_tclas *pTCLAS,
267 u8 TCLAS_Num, u8 TCLAS_Proc)
268 {
269 u8 count;
270
271 if (!pTsCommonInfo)
272 return;
273
274 memcpy(pTsCommonInfo->Addr, Addr, 6);
275
276 if (pTSPEC)
277 memcpy((u8 *)(&(pTsCommonInfo->TSpec)), (u8 *)pTSPEC,
278 sizeof(union tspec_body));
279
280 for (count = 0; count < TCLAS_Num; count++)
281 memcpy((u8 *)(&(pTsCommonInfo->TClass[count])),
282 (u8 *)pTCLAS, sizeof(union qos_tclas));
283
284 pTsCommonInfo->TClasProc = TCLAS_Proc;
285 pTsCommonInfo->TClasNum = TCLAS_Num;
286 }
287
GetTs(struct rtllib_device * ieee,struct ts_common_info ** ppTS,u8 * Addr,u8 TID,enum tr_select TxRxSelect,bool bAddNewTs)288 bool GetTs(struct rtllib_device *ieee, struct ts_common_info **ppTS,
289 u8 *Addr, u8 TID, enum tr_select TxRxSelect, bool bAddNewTs)
290 {
291 u8 UP = 0;
292 union tspec_body TSpec;
293 union qos_tsinfo *pTSInfo = &TSpec.f.TSInfo;
294 struct list_head *pUnusedList;
295 struct list_head *pAddmitList;
296 enum direction_value Dir;
297
298 if (is_multicast_ether_addr(Addr)) {
299 netdev_warn(ieee->dev, "Get TS for Broadcast or Multicast\n");
300 return false;
301 }
302 if (ieee->current_network.qos_data.supported == 0) {
303 UP = 0;
304 } else {
305 switch (TID) {
306 case 0:
307 case 3:
308 UP = 0;
309 break;
310 case 1:
311 case 2:
312 UP = 2;
313 break;
314 case 4:
315 case 5:
316 UP = 5;
317 break;
318 case 6:
319 case 7:
320 UP = 7;
321 break;
322 default:
323 netdev_warn(ieee->dev, "%s(): TID(%d) is not valid\n",
324 __func__, TID);
325 return false;
326 }
327 }
328
329 *ppTS = SearchAdmitTRStream(ieee, Addr, UP, TxRxSelect);
330 if (*ppTS)
331 return true;
332
333 if (!bAddNewTs) {
334 netdev_dbg(ieee->dev, "add new TS failed(tid:%d)\n", UP);
335 return false;
336 }
337
338 pUnusedList = (TxRxSelect == TX_DIR) ?
339 (&ieee->Tx_TS_Unused_List) :
340 (&ieee->Rx_TS_Unused_List);
341
342 pAddmitList = (TxRxSelect == TX_DIR) ?
343 (&ieee->Tx_TS_Admit_List) :
344 (&ieee->Rx_TS_Admit_List);
345
346 Dir = (ieee->iw_mode == IW_MODE_MASTER) ?
347 ((TxRxSelect == TX_DIR) ? DIR_DOWN : DIR_UP) :
348 ((TxRxSelect == TX_DIR) ? DIR_UP : DIR_DOWN);
349
350 if (!list_empty(pUnusedList)) {
351 (*ppTS) = list_entry(pUnusedList->next,
352 struct ts_common_info, List);
353 list_del_init(&(*ppTS)->List);
354 if (TxRxSelect == TX_DIR) {
355 struct tx_ts_record *tmp =
356 container_of(*ppTS,
357 struct tx_ts_record,
358 TsCommonInfo);
359 ResetTxTsEntry(tmp);
360 } else {
361 struct rx_ts_record *tmp =
362 container_of(*ppTS,
363 struct rx_ts_record,
364 ts_common_info);
365 ResetRxTsEntry(tmp);
366 }
367
368 netdev_dbg(ieee->dev,
369 "to init current TS, UP:%d, Dir:%d, addr: %pM ppTs=%p\n",
370 UP, Dir, Addr, *ppTS);
371 pTSInfo->field.ucTrafficType = 0;
372 pTSInfo->field.ucTSID = UP;
373 pTSInfo->field.ucDirection = Dir;
374 pTSInfo->field.ucAccessPolicy = 1;
375 pTSInfo->field.ucAggregation = 0;
376 pTSInfo->field.ucPSB = 0;
377 pTSInfo->field.ucUP = UP;
378 pTSInfo->field.ucTSInfoAckPolicy = 0;
379 pTSInfo->field.ucSchedule = 0;
380
381 MakeTSEntry(*ppTS, Addr, &TSpec, NULL, 0, 0);
382 AdmitTS(ieee, *ppTS, 0);
383 list_add_tail(&((*ppTS)->List), pAddmitList);
384
385 return true;
386 }
387
388 netdev_warn(ieee->dev,
389 "There is not enough dir=%d(0=up down=1) TS record to be used!",
390 Dir);
391 return false;
392 }
393
RemoveTsEntry(struct rtllib_device * ieee,struct ts_common_info * pTs,enum tr_select TxRxSelect)394 static void RemoveTsEntry(struct rtllib_device *ieee,
395 struct ts_common_info *pTs, enum tr_select TxRxSelect)
396 {
397 del_timer_sync(&pTs->SetupTimer);
398 del_timer_sync(&pTs->InactTimer);
399 TsInitDelBA(ieee, pTs, TxRxSelect);
400
401 if (TxRxSelect == RX_DIR) {
402 struct rx_reorder_entry *pRxReorderEntry;
403 struct rx_ts_record *pRxTS = (struct rx_ts_record *)pTs;
404
405 if (timer_pending(&pRxTS->rx_pkt_pending_timer))
406 del_timer_sync(&pRxTS->rx_pkt_pending_timer);
407
408 while (!list_empty(&pRxTS->rx_pending_pkt_list)) {
409 pRxReorderEntry = (struct rx_reorder_entry *)
410 list_entry(pRxTS->rx_pending_pkt_list.prev,
411 struct rx_reorder_entry, List);
412 netdev_dbg(ieee->dev, "%s(): Delete SeqNum %d!\n",
413 __func__, pRxReorderEntry->SeqNum);
414 list_del_init(&pRxReorderEntry->List);
415 {
416 int i = 0;
417 struct rtllib_rxb *prxb = pRxReorderEntry->prxb;
418
419 if (unlikely(!prxb))
420 return;
421 for (i = 0; i < prxb->nr_subframes; i++)
422 dev_kfree_skb(prxb->subframes[i]);
423 kfree(prxb);
424 prxb = NULL;
425 }
426 list_add_tail(&pRxReorderEntry->List,
427 &ieee->RxReorder_Unused_List);
428 }
429 } else {
430 struct tx_ts_record *pTxTS = (struct tx_ts_record *)pTs;
431
432 del_timer_sync(&pTxTS->TsAddBaTimer);
433 }
434 }
435
RemovePeerTS(struct rtllib_device * ieee,u8 * Addr)436 void RemovePeerTS(struct rtllib_device *ieee, u8 *Addr)
437 {
438 struct ts_common_info *pTS, *pTmpTS;
439
440 netdev_info(ieee->dev, "===========>%s, %pM\n", __func__, Addr);
441
442 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Pending_List, List) {
443 if (memcmp(pTS->Addr, Addr, 6) == 0) {
444 RemoveTsEntry(ieee, pTS, TX_DIR);
445 list_del_init(&pTS->List);
446 list_add_tail(&pTS->List, &ieee->Tx_TS_Unused_List);
447 }
448 }
449
450 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Admit_List, List) {
451 if (memcmp(pTS->Addr, Addr, 6) == 0) {
452 netdev_info(ieee->dev,
453 "====>remove Tx_TS_admin_list\n");
454 RemoveTsEntry(ieee, pTS, TX_DIR);
455 list_del_init(&pTS->List);
456 list_add_tail(&pTS->List, &ieee->Tx_TS_Unused_List);
457 }
458 }
459
460 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Pending_List, List) {
461 if (memcmp(pTS->Addr, Addr, 6) == 0) {
462 RemoveTsEntry(ieee, pTS, RX_DIR);
463 list_del_init(&pTS->List);
464 list_add_tail(&pTS->List, &ieee->Rx_TS_Unused_List);
465 }
466 }
467
468 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Admit_List, List) {
469 if (memcmp(pTS->Addr, Addr, 6) == 0) {
470 RemoveTsEntry(ieee, pTS, RX_DIR);
471 list_del_init(&pTS->List);
472 list_add_tail(&pTS->List, &ieee->Rx_TS_Unused_List);
473 }
474 }
475 }
476 EXPORT_SYMBOL(RemovePeerTS);
477
RemoveAllTS(struct rtllib_device * ieee)478 void RemoveAllTS(struct rtllib_device *ieee)
479 {
480 struct ts_common_info *pTS, *pTmpTS;
481
482 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Pending_List, List) {
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 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Admit_List, List) {
489 RemoveTsEntry(ieee, pTS, TX_DIR);
490 list_del_init(&pTS->List);
491 list_add_tail(&pTS->List, &ieee->Tx_TS_Unused_List);
492 }
493
494 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Pending_List, List) {
495 RemoveTsEntry(ieee, pTS, RX_DIR);
496 list_del_init(&pTS->List);
497 list_add_tail(&pTS->List, &ieee->Rx_TS_Unused_List);
498 }
499
500 list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Admit_List, List) {
501 RemoveTsEntry(ieee, pTS, RX_DIR);
502 list_del_init(&pTS->List);
503 list_add_tail(&pTS->List, &ieee->Rx_TS_Unused_List);
504 }
505 }
506
TsStartAddBaProcess(struct rtllib_device * ieee,struct tx_ts_record * pTxTS)507 void TsStartAddBaProcess(struct rtllib_device *ieee, struct tx_ts_record *pTxTS)
508 {
509 if (pTxTS->bAddBaReqInProgress == false) {
510 pTxTS->bAddBaReqInProgress = true;
511
512 if (pTxTS->bAddBaReqDelayed) {
513 netdev_dbg(ieee->dev, "Start ADDBA after 60 sec!!\n");
514 mod_timer(&pTxTS->TsAddBaTimer, jiffies +
515 msecs_to_jiffies(TS_ADDBA_DELAY));
516 } else {
517 netdev_dbg(ieee->dev, "Immediately Start ADDBA\n");
518 mod_timer(&pTxTS->TsAddBaTimer, jiffies + 10);
519 }
520 } else
521 netdev_dbg(ieee->dev, "BA timer is already added\n");
522 }
523
