1 /******************************************************************************
2 * Copyright(c) 2008 - 2010 Realtek Corporation. All rights reserved.
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
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
13 * The full GNU General Public License is included in this distribution in the
14 * file called LICENSE.
16 * Contact Information:
17 * wlanfae <wlanfae@realtek.com>
18 ******************************************************************************/
19 #include <asm/byteorder.h>
20 #include <asm/unaligned.h>
22 #include "rtl819x_BA.h"
24 static void ActivateBAEntry(struct rtllib_device *ieee, struct ba_record *pBA,
29 mod_timer(&pBA->Timer, jiffies + msecs_to_jiffies(Time));
32 static void DeActivateBAEntry(struct rtllib_device *ieee, struct ba_record *pBA)
35 del_timer_sync(&pBA->Timer);
38 static u8 TxTsDeleteBA(struct rtllib_device *ieee, struct tx_ts_record *pTxTs)
40 struct ba_record *pAdmittedBa = &pTxTs->TxAdmittedBARecord;
41 struct ba_record *pPendingBa = &pTxTs->TxPendingBARecord;
42 u8 bSendDELBA = false;
44 if (pPendingBa->bValid) {
45 DeActivateBAEntry(ieee, pPendingBa);
49 if (pAdmittedBa->bValid) {
50 DeActivateBAEntry(ieee, pAdmittedBa);
56 static u8 RxTsDeleteBA(struct rtllib_device *ieee, struct rx_ts_record *pRxTs)
58 struct ba_record *pBa = &pRxTs->RxAdmittedBARecord;
59 u8 bSendDELBA = false;
62 DeActivateBAEntry(ieee, pBa);
69 void ResetBaEntry(struct ba_record *pBA)
72 pBA->BaParamSet.shortData = 0;
73 pBA->BaTimeoutValue = 0;
75 pBA->BaStartSeqCtrl.ShortData = 0;
77 static struct sk_buff *rtllib_ADDBA(struct rtllib_device *ieee, u8 *Dst,
78 struct ba_record *pBA,
79 u16 StatusCode, u8 type)
81 struct sk_buff *skb = NULL;
82 struct rtllib_hdr_3addr *BAReq = NULL;
84 u16 len = ieee->tx_headroom + 9;
86 RTLLIB_DEBUG(RTLLIB_DL_TRACE | RTLLIB_DL_BA,
87 "========>%s(), frame(%d) sentd to: %pM, ieee->dev:%p\n",
88 __func__, type, Dst, ieee->dev);
90 RTLLIB_DEBUG(RTLLIB_DL_ERR, "pBA is NULL\n");
93 skb = dev_alloc_skb(len + sizeof(struct rtllib_hdr_3addr));
95 RTLLIB_DEBUG(RTLLIB_DL_ERR, "can't alloc skb for ADDBA_REQ\n");
99 memset(skb->data, 0, sizeof(struct rtllib_hdr_3addr));
101 skb_reserve(skb, ieee->tx_headroom);
103 BAReq = (struct rtllib_hdr_3addr *)skb_put(skb,
104 sizeof(struct rtllib_hdr_3addr));
106 memcpy(BAReq->addr1, Dst, ETH_ALEN);
107 memcpy(BAReq->addr2, ieee->dev->dev_addr, ETH_ALEN);
109 memcpy(BAReq->addr3, ieee->current_network.bssid, ETH_ALEN);
110 BAReq->frame_ctl = cpu_to_le16(RTLLIB_STYPE_MANAGE_ACT);
112 tag = (u8 *)skb_put(skb, 9);
115 *tag++ = pBA->DialogToken;
117 if (ACT_ADDBARSP == type) {
118 RT_TRACE(COMP_DBG, "====>to send ADDBARSP\n");
120 put_unaligned_le16(StatusCode, tag);
124 put_unaligned_le16(pBA->BaParamSet.shortData, tag);
127 put_unaligned_le16(pBA->BaTimeoutValue, tag);
130 if (ACT_ADDBAREQ == type) {
131 memcpy(tag, (u8 *)&(pBA->BaStartSeqCtrl), 2);
135 RTLLIB_DEBUG_DATA(RTLLIB_DL_DATA|RTLLIB_DL_BA, skb->data, skb->len);
139 static struct sk_buff *rtllib_DELBA(struct rtllib_device *ieee, u8 *dst,
140 struct ba_record *pBA,
141 enum tr_select TxRxSelect, u16 ReasonCode)
143 union delba_param_set DelbaParamSet;
144 struct sk_buff *skb = NULL;
145 struct rtllib_hdr_3addr *Delba = NULL;
147 u16 len = 6 + ieee->tx_headroom;
150 RTLLIB_DEBUG(RTLLIB_DL_TRACE | RTLLIB_DL_BA,
151 "========>%s(), ReasonCode(%d) sentd to: %pM\n",
152 __func__, ReasonCode, dst);
154 memset(&DelbaParamSet, 0, 2);
156 DelbaParamSet.field.Initiator = (TxRxSelect == TX_DIR) ? 1 : 0;
157 DelbaParamSet.field.TID = pBA->BaParamSet.field.TID;
159 skb = dev_alloc_skb(len + sizeof(struct rtllib_hdr_3addr));
161 RTLLIB_DEBUG(RTLLIB_DL_ERR, "can't alloc skb for ADDBA_REQ\n");
165 skb_reserve(skb, ieee->tx_headroom);
167 Delba = (struct rtllib_hdr_3addr *) skb_put(skb,
168 sizeof(struct rtllib_hdr_3addr));
170 memcpy(Delba->addr1, dst, ETH_ALEN);
171 memcpy(Delba->addr2, ieee->dev->dev_addr, ETH_ALEN);
172 memcpy(Delba->addr3, ieee->current_network.bssid, ETH_ALEN);
173 Delba->frame_ctl = cpu_to_le16(RTLLIB_STYPE_MANAGE_ACT);
175 tag = (u8 *)skb_put(skb, 6);
181 put_unaligned_le16(DelbaParamSet.shortData, tag);
184 put_unaligned_le16(ReasonCode, tag);
187 RTLLIB_DEBUG_DATA(RTLLIB_DL_DATA|RTLLIB_DL_BA, skb->data, skb->len);
189 RTLLIB_DEBUG(RTLLIB_DL_TRACE | RTLLIB_DL_BA, "<=====%s()\n",
194 static void rtllib_send_ADDBAReq(struct rtllib_device *ieee, u8 *dst,
195 struct ba_record *pBA)
197 struct sk_buff *skb = NULL;
199 skb = rtllib_ADDBA(ieee, dst, pBA, 0, ACT_ADDBAREQ);
202 RT_TRACE(COMP_DBG, "====>to send ADDBAREQ!!!!!\n");
203 softmac_mgmt_xmit(skb, ieee);
205 RTLLIB_DEBUG(RTLLIB_DL_ERR,
206 "alloc skb error in function %s()\n", __func__);
210 static void rtllib_send_ADDBARsp(struct rtllib_device *ieee, u8 *dst,
211 struct ba_record *pBA, u16 StatusCode)
213 struct sk_buff *skb = NULL;
215 skb = rtllib_ADDBA(ieee, dst, pBA, StatusCode, ACT_ADDBARSP);
217 softmac_mgmt_xmit(skb, ieee);
219 RTLLIB_DEBUG(RTLLIB_DL_ERR,
220 "alloc skb error in function %s()\n", __func__);
223 static void rtllib_send_DELBA(struct rtllib_device *ieee, u8 *dst,
224 struct ba_record *pBA, enum tr_select TxRxSelect,
227 struct sk_buff *skb = NULL;
229 skb = rtllib_DELBA(ieee, dst, pBA, TxRxSelect, ReasonCode);
231 softmac_mgmt_xmit(skb, ieee);
233 RTLLIB_DEBUG(RTLLIB_DL_ERR,
234 "alloc skb error in function %s()\n", __func__);
237 int rtllib_rx_ADDBAReq(struct rtllib_device *ieee, struct sk_buff *skb)
239 struct rtllib_hdr_3addr *req = NULL;
241 u8 *dst = NULL, *pDialogToken = NULL, *tag = NULL;
242 struct ba_record *pBA = NULL;
243 union ba_param_set *pBaParamSet = NULL;
244 u16 *pBaTimeoutVal = NULL;
245 union sequence_control *pBaStartSeqCtrl = NULL;
246 struct rx_ts_record *pTS = NULL;
248 if (skb->len < sizeof(struct rtllib_hdr_3addr) + 9) {
249 RTLLIB_DEBUG(RTLLIB_DL_ERR,
250 " Invalid skb len in BAREQ(%d / %d)\n",
252 (int)(sizeof(struct rtllib_hdr_3addr) + 9));
256 RTLLIB_DEBUG_DATA(RTLLIB_DL_DATA|RTLLIB_DL_BA, skb->data, skb->len);
258 req = (struct rtllib_hdr_3addr *) skb->data;
260 dst = (u8 *)(&req->addr2[0]);
261 tag += sizeof(struct rtllib_hdr_3addr);
262 pDialogToken = tag + 2;
263 pBaParamSet = (union ba_param_set *)(tag + 3);
264 pBaTimeoutVal = (u16 *)(tag + 5);
265 pBaStartSeqCtrl = (union sequence_control *)(req + 7);
267 RT_TRACE(COMP_DBG, "====>rx ADDBAREQ from : %pM\n", dst);
268 if (ieee->current_network.qos_data.active == 0 ||
269 (ieee->pHTInfo->bCurrentHTSupport == false) ||
270 (ieee->pHTInfo->IOTAction & HT_IOT_ACT_REJECT_ADDBA_REQ)) {
271 rc = ADDBA_STATUS_REFUSED;
272 RTLLIB_DEBUG(RTLLIB_DL_ERR,
273 "Failed to reply on ADDBA_REQ as some capability is not ready(%d, %d)\n",
274 ieee->current_network.qos_data.active,
275 ieee->pHTInfo->bCurrentHTSupport);
276 goto OnADDBAReq_Fail;
278 if (!GetTs(ieee, (struct ts_common_info **)(&pTS), dst,
279 (u8)(pBaParamSet->field.TID), RX_DIR, true)) {
280 rc = ADDBA_STATUS_REFUSED;
281 RTLLIB_DEBUG(RTLLIB_DL_ERR, "can't get TS in %s()\n", __func__);
282 goto OnADDBAReq_Fail;
284 pBA = &pTS->RxAdmittedBARecord;
286 if (pBaParamSet->field.BAPolicy == BA_POLICY_DELAYED) {
287 rc = ADDBA_STATUS_INVALID_PARAM;
288 RTLLIB_DEBUG(RTLLIB_DL_ERR,
289 "BA Policy is not correct in %s()\n", __func__);
290 goto OnADDBAReq_Fail;
293 rtllib_FlushRxTsPendingPkts(ieee, pTS);
295 DeActivateBAEntry(ieee, pBA);
296 pBA->DialogToken = *pDialogToken;
297 pBA->BaParamSet = *pBaParamSet;
298 pBA->BaTimeoutValue = *pBaTimeoutVal;
299 pBA->BaStartSeqCtrl = *pBaStartSeqCtrl;
301 if (ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev) ||
302 (ieee->pHTInfo->IOTAction & HT_IOT_ACT_ALLOW_PEER_AGG_ONE_PKT))
303 pBA->BaParamSet.field.BufferSize = 1;
305 pBA->BaParamSet.field.BufferSize = 32;
307 ActivateBAEntry(ieee, pBA, 0);
308 rtllib_send_ADDBARsp(ieee, dst, pBA, ADDBA_STATUS_SUCCESS);
316 BA.BaParamSet = *pBaParamSet;
317 BA.BaTimeoutValue = *pBaTimeoutVal;
318 BA.DialogToken = *pDialogToken;
319 BA.BaParamSet.field.BAPolicy = BA_POLICY_IMMEDIATE;
320 rtllib_send_ADDBARsp(ieee, dst, &BA, rc);
325 int rtllib_rx_ADDBARsp(struct rtllib_device *ieee, struct sk_buff *skb)
327 struct rtllib_hdr_3addr *rsp = NULL;
328 struct ba_record *pPendingBA, *pAdmittedBA;
329 struct tx_ts_record *pTS = NULL;
330 u8 *dst = NULL, *pDialogToken = NULL, *tag = NULL;
331 u16 *pStatusCode = NULL, *pBaTimeoutVal = NULL;
332 union ba_param_set *pBaParamSet = NULL;
335 if (skb->len < sizeof(struct rtllib_hdr_3addr) + 9) {
336 RTLLIB_DEBUG(RTLLIB_DL_ERR,
337 "Invalid skb len in BARSP(%d / %d)\n",
339 (int)(sizeof(struct rtllib_hdr_3addr) + 9));
342 rsp = (struct rtllib_hdr_3addr *)skb->data;
344 dst = (u8 *)(&rsp->addr2[0]);
345 tag += sizeof(struct rtllib_hdr_3addr);
346 pDialogToken = tag + 2;
347 pStatusCode = (u16 *)(tag + 3);
348 pBaParamSet = (union ba_param_set *)(tag + 5);
349 pBaTimeoutVal = (u16 *)(tag + 7);
351 RT_TRACE(COMP_DBG, "====>rx ADDBARSP from : %pM\n", dst);
352 if (ieee->current_network.qos_data.active == 0 ||
353 ieee->pHTInfo->bCurrentHTSupport == false ||
354 ieee->pHTInfo->bCurrentAMPDUEnable == false) {
355 RTLLIB_DEBUG(RTLLIB_DL_ERR,
356 "reject to ADDBA_RSP as some capability is not ready(%d, %d, %d)\n",
357 ieee->current_network.qos_data.active,
358 ieee->pHTInfo->bCurrentHTSupport,
359 ieee->pHTInfo->bCurrentAMPDUEnable);
360 ReasonCode = DELBA_REASON_UNKNOWN_BA;
361 goto OnADDBARsp_Reject;
365 if (!GetTs(ieee, (struct ts_common_info **)(&pTS), dst,
366 (u8)(pBaParamSet->field.TID), TX_DIR, false)) {
367 RTLLIB_DEBUG(RTLLIB_DL_ERR, "can't get TS in %s()\n", __func__);
368 ReasonCode = DELBA_REASON_UNKNOWN_BA;
369 goto OnADDBARsp_Reject;
372 pTS->bAddBaReqInProgress = false;
373 pPendingBA = &pTS->TxPendingBARecord;
374 pAdmittedBA = &pTS->TxAdmittedBARecord;
377 if (pAdmittedBA->bValid == true) {
378 RTLLIB_DEBUG(RTLLIB_DL_BA,
379 "OnADDBARsp(): Recv ADDBA Rsp. Drop because already admit it!\n");
381 } else if ((pPendingBA->bValid == false) ||
382 (*pDialogToken != pPendingBA->DialogToken)) {
383 RTLLIB_DEBUG(RTLLIB_DL_ERR,
384 "OnADDBARsp(): Recv ADDBA Rsp. BA invalid, DELBA!\n");
385 ReasonCode = DELBA_REASON_UNKNOWN_BA;
386 goto OnADDBARsp_Reject;
388 RTLLIB_DEBUG(RTLLIB_DL_BA,
389 "OnADDBARsp(): Recv ADDBA Rsp. BA is admitted! Status code:%X\n",
391 DeActivateBAEntry(ieee, pPendingBA);
395 if (*pStatusCode == ADDBA_STATUS_SUCCESS) {
396 if (pBaParamSet->field.BAPolicy == BA_POLICY_DELAYED) {
397 pTS->bAddBaReqDelayed = true;
398 DeActivateBAEntry(ieee, pAdmittedBA);
399 ReasonCode = DELBA_REASON_END_BA;
400 goto OnADDBARsp_Reject;
404 pAdmittedBA->DialogToken = *pDialogToken;
405 pAdmittedBA->BaTimeoutValue = *pBaTimeoutVal;
406 pAdmittedBA->BaStartSeqCtrl = pPendingBA->BaStartSeqCtrl;
407 pAdmittedBA->BaParamSet = *pBaParamSet;
408 DeActivateBAEntry(ieee, pAdmittedBA);
409 ActivateBAEntry(ieee, pAdmittedBA, *pBaTimeoutVal);
411 pTS->bAddBaReqDelayed = true;
412 pTS->bDisable_AddBa = true;
413 ReasonCode = DELBA_REASON_END_BA;
414 goto OnADDBARsp_Reject;
423 BA.BaParamSet = *pBaParamSet;
424 rtllib_send_DELBA(ieee, dst, &BA, TX_DIR, ReasonCode);
429 int rtllib_rx_DELBA(struct rtllib_device *ieee, struct sk_buff *skb)
431 struct rtllib_hdr_3addr *delba = NULL;
432 union delba_param_set *pDelBaParamSet = NULL;
433 u16 *pReasonCode = NULL;
436 if (skb->len < sizeof(struct rtllib_hdr_3addr) + 6) {
437 RTLLIB_DEBUG(RTLLIB_DL_ERR,
438 "Invalid skb len in DELBA(%d / %d)\n",
440 (int)(sizeof(struct rtllib_hdr_3addr) + 6));
444 if (ieee->current_network.qos_data.active == 0 ||
445 ieee->pHTInfo->bCurrentHTSupport == false) {
446 RTLLIB_DEBUG(RTLLIB_DL_ERR,
447 "received DELBA while QOS or HT is not supported(%d, %d)\n",
448 ieee->current_network. qos_data.active,
449 ieee->pHTInfo->bCurrentHTSupport);
453 RTLLIB_DEBUG_DATA(RTLLIB_DL_DATA|RTLLIB_DL_BA, skb->data, skb->len);
454 delba = (struct rtllib_hdr_3addr *)skb->data;
455 dst = (u8 *)(&delba->addr2[0]);
456 delba += sizeof(struct rtllib_hdr_3addr);
457 pDelBaParamSet = (union delba_param_set *)(delba+2);
458 pReasonCode = (u16 *)(delba+4);
460 if (pDelBaParamSet->field.Initiator == 1) {
461 struct rx_ts_record *pRxTs;
463 if (!GetTs(ieee, (struct ts_common_info **)&pRxTs, dst,
464 (u8)pDelBaParamSet->field.TID, RX_DIR, false)) {
465 RTLLIB_DEBUG(RTLLIB_DL_ERR,
466 "can't get TS for RXTS in %s().dst: %pM TID:%d\n",
468 (u8)pDelBaParamSet->field.TID);
472 RxTsDeleteBA(ieee, pRxTs);
474 struct tx_ts_record *pTxTs;
476 if (!GetTs(ieee, (struct ts_common_info **)&pTxTs, dst,
477 (u8)pDelBaParamSet->field.TID, TX_DIR, false)) {
478 RTLLIB_DEBUG(RTLLIB_DL_ERR,
479 "can't get TS for TXTS in %s()\n",
484 pTxTs->bUsingBa = false;
485 pTxTs->bAddBaReqInProgress = false;
486 pTxTs->bAddBaReqDelayed = false;
487 del_timer_sync(&pTxTs->TsAddBaTimer);
488 TxTsDeleteBA(ieee, pTxTs);
493 void TsInitAddBA(struct rtllib_device *ieee, struct tx_ts_record *pTS,
494 u8 Policy, u8 bOverwritePending)
496 struct ba_record *pBA = &pTS->TxPendingBARecord;
498 if (pBA->bValid == true && bOverwritePending == false)
501 DeActivateBAEntry(ieee, pBA);
504 pBA->BaParamSet.field.AMSDU_Support = 0;
505 pBA->BaParamSet.field.BAPolicy = Policy;
506 pBA->BaParamSet.field.TID =
507 pTS->TsCommonInfo.TSpec.f.TSInfo.field.ucTSID;
508 pBA->BaParamSet.field.BufferSize = 32;
509 pBA->BaTimeoutValue = 0;
510 pBA->BaStartSeqCtrl.field.SeqNum = (pTS->TxCurSeq + 3) % 4096;
512 ActivateBAEntry(ieee, pBA, BA_SETUP_TIMEOUT);
514 rtllib_send_ADDBAReq(ieee, pTS->TsCommonInfo.Addr, pBA);
517 void TsInitDelBA(struct rtllib_device *ieee,
518 struct ts_common_info *pTsCommonInfo,
519 enum tr_select TxRxSelect)
521 if (TxRxSelect == TX_DIR) {
522 struct tx_ts_record *pTxTs =
523 (struct tx_ts_record *)pTsCommonInfo;
525 if (TxTsDeleteBA(ieee, pTxTs))
526 rtllib_send_DELBA(ieee, pTsCommonInfo->Addr,
527 (pTxTs->TxAdmittedBARecord.bValid) ?
528 (&pTxTs->TxAdmittedBARecord) :
529 (&pTxTs->TxPendingBARecord),
530 TxRxSelect, DELBA_REASON_END_BA);
531 } else if (TxRxSelect == RX_DIR) {
532 struct rx_ts_record *pRxTs =
533 (struct rx_ts_record *)pTsCommonInfo;
534 if (RxTsDeleteBA(ieee, pRxTs))
535 rtllib_send_DELBA(ieee, pTsCommonInfo->Addr,
536 &pRxTs->RxAdmittedBARecord,
537 TxRxSelect, DELBA_REASON_END_BA);
541 void BaSetupTimeOut(unsigned long data)
543 struct tx_ts_record *pTxTs = (struct tx_ts_record *)data;
545 pTxTs->bAddBaReqInProgress = false;
546 pTxTs->bAddBaReqDelayed = true;
547 pTxTs->TxPendingBARecord.bValid = false;
550 void TxBaInactTimeout(unsigned long data)
552 struct tx_ts_record *pTxTs = (struct tx_ts_record *)data;
553 struct rtllib_device *ieee = container_of(pTxTs, struct rtllib_device,
554 TxTsRecord[pTxTs->num]);
555 TxTsDeleteBA(ieee, pTxTs);
556 rtllib_send_DELBA(ieee, pTxTs->TsCommonInfo.Addr,
557 &pTxTs->TxAdmittedBARecord, TX_DIR,
558 DELBA_REASON_TIMEOUT);
561 void RxBaInactTimeout(unsigned long data)
563 struct rx_ts_record *pRxTs = (struct rx_ts_record *)data;
564 struct rtllib_device *ieee = container_of(pRxTs, struct rtllib_device,
565 RxTsRecord[pRxTs->num]);
567 RxTsDeleteBA(ieee, pRxTs);
568 rtllib_send_DELBA(ieee, pRxTs->TsCommonInfo.Addr,
569 &pRxTs->RxAdmittedBARecord, RX_DIR,
570 DELBA_REASON_TIMEOUT);