1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright(c) 2008 - 2010 Realtek Corporation. All rights reserved.
5 * Contact Information: wlanfae <wlanfae@realtek.com>
7 #include <asm/byteorder.h>
8 #include <asm/unaligned.h>
9 #include <linux/etherdevice.h>
11 #include "rtl819x_BA.h"
13 static void ActivateBAEntry(struct rtllib_device *ieee, struct ba_record *pBA,
18 mod_timer(&pBA->timer, jiffies + msecs_to_jiffies(Time));
21 static void DeActivateBAEntry(struct rtllib_device *ieee, struct ba_record *pBA)
24 del_timer_sync(&pBA->timer);
27 static u8 TxTsDeleteBA(struct rtllib_device *ieee, struct tx_ts_record *pTxTs)
29 struct ba_record *pAdmittedBa = &pTxTs->TxAdmittedBARecord;
30 struct ba_record *pPendingBa = &pTxTs->TxPendingBARecord;
31 u8 bSendDELBA = false;
33 if (pPendingBa->b_valid) {
34 DeActivateBAEntry(ieee, pPendingBa);
38 if (pAdmittedBa->b_valid) {
39 DeActivateBAEntry(ieee, pAdmittedBa);
45 static u8 RxTsDeleteBA(struct rtllib_device *ieee, struct rx_ts_record *pRxTs)
47 struct ba_record *pBa = &pRxTs->rx_admitted_ba_record;
48 u8 bSendDELBA = false;
51 DeActivateBAEntry(ieee, pBa);
58 void ResetBaEntry(struct ba_record *pBA)
61 pBA->ba_param_set.short_data = 0;
62 pBA->ba_timeout_value = 0;
63 pBA->dialog_token = 0;
64 pBA->ba_start_seq_ctrl.short_data = 0;
66 static struct sk_buff *rtllib_ADDBA(struct rtllib_device *ieee, u8 *Dst,
67 struct ba_record *pBA,
68 u16 StatusCode, u8 type)
70 struct sk_buff *skb = NULL;
71 struct rtllib_hdr_3addr *BAReq = NULL;
73 u16 len = ieee->tx_headroom + 9;
75 netdev_dbg(ieee->dev, "%s(): frame(%d) sentd to: %pM, ieee->dev:%p\n",
76 __func__, type, Dst, ieee->dev);
79 netdev_warn(ieee->dev, "pBA is NULL\n");
82 skb = dev_alloc_skb(len + sizeof(struct rtllib_hdr_3addr));
86 memset(skb->data, 0, sizeof(struct rtllib_hdr_3addr));
88 skb_reserve(skb, ieee->tx_headroom);
90 BAReq = skb_put(skb, sizeof(struct rtllib_hdr_3addr));
92 ether_addr_copy(BAReq->addr1, Dst);
93 ether_addr_copy(BAReq->addr2, ieee->dev->dev_addr);
95 ether_addr_copy(BAReq->addr3, ieee->current_network.bssid);
96 BAReq->frame_ctl = cpu_to_le16(RTLLIB_STYPE_MANAGE_ACT);
98 tag = skb_put(skb, 9);
101 *tag++ = pBA->dialog_token;
103 if (type == ACT_ADDBARSP) {
104 RT_TRACE(COMP_DBG, "====>to send ADDBARSP\n");
106 put_unaligned_le16(StatusCode, tag);
110 put_unaligned_le16(pBA->ba_param_set.short_data, tag);
113 put_unaligned_le16(pBA->ba_timeout_value, tag);
116 if (type == ACT_ADDBAREQ) {
117 memcpy(tag, (u8 *)&(pBA->ba_start_seq_ctrl), 2);
122 print_hex_dump_bytes("%s: ", DUMP_PREFIX_NONE, skb->data,
128 static struct sk_buff *rtllib_DELBA(struct rtllib_device *ieee, u8 *dst,
129 struct ba_record *pBA,
130 enum tr_select TxRxSelect, u16 ReasonCode)
132 union delba_param_set DelbaParamSet;
133 struct sk_buff *skb = NULL;
134 struct rtllib_hdr_3addr *Delba = NULL;
136 u16 len = 6 + ieee->tx_headroom;
139 netdev_dbg(ieee->dev, "%s(): ReasonCode(%d) sentd to: %pM\n",
140 __func__, ReasonCode, dst);
142 memset(&DelbaParamSet, 0, 2);
144 DelbaParamSet.field.initiator = (TxRxSelect == TX_DIR) ? 1 : 0;
145 DelbaParamSet.field.tid = pBA->ba_param_set.field.tid;
147 skb = dev_alloc_skb(len + sizeof(struct rtllib_hdr_3addr));
151 skb_reserve(skb, ieee->tx_headroom);
153 Delba = skb_put(skb, sizeof(struct rtllib_hdr_3addr));
155 ether_addr_copy(Delba->addr1, dst);
156 ether_addr_copy(Delba->addr2, ieee->dev->dev_addr);
157 ether_addr_copy(Delba->addr3, ieee->current_network.bssid);
158 Delba->frame_ctl = cpu_to_le16(RTLLIB_STYPE_MANAGE_ACT);
160 tag = skb_put(skb, 6);
166 put_unaligned_le16(DelbaParamSet.short_data, tag);
169 put_unaligned_le16(ReasonCode, tag);
173 print_hex_dump_bytes("%s: ", DUMP_PREFIX_NONE, skb->data,
179 static void rtllib_send_ADDBAReq(struct rtllib_device *ieee, u8 *dst,
180 struct ba_record *pBA)
184 skb = rtllib_ADDBA(ieee, dst, pBA, 0, ACT_ADDBAREQ);
187 RT_TRACE(COMP_DBG, "====>to send ADDBAREQ!!!!!\n");
188 softmac_mgmt_xmit(skb, ieee);
190 netdev_dbg(ieee->dev, "Failed to generate ADDBAReq packet.\n");
194 static void rtllib_send_ADDBARsp(struct rtllib_device *ieee, u8 *dst,
195 struct ba_record *pBA, u16 StatusCode)
199 skb = rtllib_ADDBA(ieee, dst, pBA, StatusCode, ACT_ADDBARSP);
201 softmac_mgmt_xmit(skb, ieee);
203 netdev_dbg(ieee->dev, "Failed to generate ADDBARsp packet.\n");
206 static void rtllib_send_DELBA(struct rtllib_device *ieee, u8 *dst,
207 struct ba_record *pBA, enum tr_select TxRxSelect,
212 skb = rtllib_DELBA(ieee, dst, pBA, TxRxSelect, ReasonCode);
214 softmac_mgmt_xmit(skb, ieee);
216 netdev_dbg(ieee->dev, "Failed to generate DELBA packet.\n");
219 int rtllib_rx_ADDBAReq(struct rtllib_device *ieee, struct sk_buff *skb)
221 struct rtllib_hdr_3addr *req = NULL;
223 u8 *dst = NULL, *pDialogToken = NULL, *tag = NULL;
224 struct ba_record *pBA = NULL;
225 union ba_param_set *pBaParamSet = NULL;
226 u16 *pBaTimeoutVal = NULL;
227 union sequence_control *pBaStartSeqCtrl = NULL;
228 struct rx_ts_record *pTS = NULL;
230 if (skb->len < sizeof(struct rtllib_hdr_3addr) + 9) {
231 netdev_warn(ieee->dev, "Invalid skb len in BAREQ(%d / %d)\n",
233 (int)(sizeof(struct rtllib_hdr_3addr) + 9));
238 print_hex_dump_bytes("%s: ", DUMP_PREFIX_NONE, __func__,
239 skb->data, skb->len);
242 req = (struct rtllib_hdr_3addr *) skb->data;
244 dst = (u8 *)(&req->addr2[0]);
245 tag += sizeof(struct rtllib_hdr_3addr);
246 pDialogToken = tag + 2;
247 pBaParamSet = (union ba_param_set *)(tag + 3);
248 pBaTimeoutVal = (u16 *)(tag + 5);
249 pBaStartSeqCtrl = (union sequence_control *)(req + 7);
251 RT_TRACE(COMP_DBG, "====>rx ADDBAREQ from : %pM\n", dst);
252 if (!ieee->current_network.qos_data.active ||
253 !ieee->pHTInfo->bCurrentHTSupport ||
254 (ieee->pHTInfo->IOTAction & HT_IOT_ACT_REJECT_ADDBA_REQ)) {
255 rc = ADDBA_STATUS_REFUSED;
256 netdev_warn(ieee->dev,
257 "Failed to reply on ADDBA_REQ as some capability is not ready(%d, %d)\n",
258 ieee->current_network.qos_data.active,
259 ieee->pHTInfo->bCurrentHTSupport);
260 goto OnADDBAReq_Fail;
262 if (!GetTs(ieee, (struct ts_common_info **)(&pTS), dst,
263 (u8)(pBaParamSet->field.tid), RX_DIR, true)) {
264 rc = ADDBA_STATUS_REFUSED;
265 netdev_warn(ieee->dev, "%s(): can't get TS\n", __func__);
266 goto OnADDBAReq_Fail;
268 pBA = &pTS->rx_admitted_ba_record;
270 if (pBaParamSet->field.ba_policy == BA_POLICY_DELAYED) {
271 rc = ADDBA_STATUS_INVALID_PARAM;
272 netdev_warn(ieee->dev, "%s(): BA Policy is not correct\n",
274 goto OnADDBAReq_Fail;
277 rtllib_FlushRxTsPendingPkts(ieee, pTS);
279 DeActivateBAEntry(ieee, pBA);
280 pBA->dialog_token = *pDialogToken;
281 pBA->ba_param_set = *pBaParamSet;
282 pBA->ba_timeout_value = *pBaTimeoutVal;
283 pBA->ba_start_seq_ctrl = *pBaStartSeqCtrl;
285 if (ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev) ||
286 (ieee->pHTInfo->IOTAction & HT_IOT_ACT_ALLOW_PEER_AGG_ONE_PKT))
287 pBA->ba_param_set.field.buffer_size = 1;
289 pBA->ba_param_set.field.buffer_size = 32;
291 ActivateBAEntry(ieee, pBA, 0);
292 rtllib_send_ADDBARsp(ieee, dst, pBA, ADDBA_STATUS_SUCCESS);
300 BA.ba_param_set = *pBaParamSet;
301 BA.ba_timeout_value = *pBaTimeoutVal;
302 BA.dialog_token = *pDialogToken;
303 BA.ba_param_set.field.ba_policy = BA_POLICY_IMMEDIATE;
304 rtllib_send_ADDBARsp(ieee, dst, &BA, rc);
309 int rtllib_rx_ADDBARsp(struct rtllib_device *ieee, struct sk_buff *skb)
311 struct rtllib_hdr_3addr *rsp = NULL;
312 struct ba_record *pPendingBA, *pAdmittedBA;
313 struct tx_ts_record *pTS = NULL;
314 u8 *dst = NULL, *pDialogToken = NULL, *tag = NULL;
315 u16 *pStatusCode = NULL, *pBaTimeoutVal = NULL;
316 union ba_param_set *pBaParamSet = NULL;
319 if (skb->len < sizeof(struct rtllib_hdr_3addr) + 9) {
320 netdev_warn(ieee->dev, "Invalid skb len in BARSP(%d / %d)\n",
322 (int)(sizeof(struct rtllib_hdr_3addr) + 9));
325 rsp = (struct rtllib_hdr_3addr *)skb->data;
327 dst = (u8 *)(&rsp->addr2[0]);
328 tag += sizeof(struct rtllib_hdr_3addr);
329 pDialogToken = tag + 2;
330 pStatusCode = (u16 *)(tag + 3);
331 pBaParamSet = (union ba_param_set *)(tag + 5);
332 pBaTimeoutVal = (u16 *)(tag + 7);
334 RT_TRACE(COMP_DBG, "====>rx ADDBARSP from : %pM\n", dst);
335 if (!ieee->current_network.qos_data.active ||
336 !ieee->pHTInfo->bCurrentHTSupport ||
337 !ieee->pHTInfo->bCurrentAMPDUEnable) {
338 netdev_warn(ieee->dev,
339 "reject to ADDBA_RSP as some capability is not ready(%d, %d, %d)\n",
340 ieee->current_network.qos_data.active,
341 ieee->pHTInfo->bCurrentHTSupport,
342 ieee->pHTInfo->bCurrentAMPDUEnable);
343 ReasonCode = DELBA_REASON_UNKNOWN_BA;
344 goto OnADDBARsp_Reject;
348 if (!GetTs(ieee, (struct ts_common_info **)(&pTS), dst,
349 (u8)(pBaParamSet->field.tid), TX_DIR, false)) {
350 netdev_warn(ieee->dev, "%s(): can't get TS\n", __func__);
351 ReasonCode = DELBA_REASON_UNKNOWN_BA;
352 goto OnADDBARsp_Reject;
355 pTS->bAddBaReqInProgress = false;
356 pPendingBA = &pTS->TxPendingBARecord;
357 pAdmittedBA = &pTS->TxAdmittedBARecord;
360 if (pAdmittedBA->b_valid) {
361 netdev_dbg(ieee->dev, "%s(): ADDBA response already admitted\n",
364 } else if (!pPendingBA->b_valid ||
365 (*pDialogToken != pPendingBA->dialog_token)) {
366 netdev_warn(ieee->dev,
367 "%s(): ADDBA Rsp. BA invalid, DELBA!\n",
369 ReasonCode = DELBA_REASON_UNKNOWN_BA;
370 goto OnADDBARsp_Reject;
372 netdev_dbg(ieee->dev,
373 "%s(): Recv ADDBA Rsp. BA is admitted! Status code:%X\n",
374 __func__, *pStatusCode);
375 DeActivateBAEntry(ieee, pPendingBA);
379 if (*pStatusCode == ADDBA_STATUS_SUCCESS) {
380 if (pBaParamSet->field.ba_policy == BA_POLICY_DELAYED) {
381 pTS->bAddBaReqDelayed = true;
382 DeActivateBAEntry(ieee, pAdmittedBA);
383 ReasonCode = DELBA_REASON_END_BA;
384 goto OnADDBARsp_Reject;
388 pAdmittedBA->dialog_token = *pDialogToken;
389 pAdmittedBA->ba_timeout_value = *pBaTimeoutVal;
390 pAdmittedBA->ba_start_seq_ctrl = pPendingBA->ba_start_seq_ctrl;
391 pAdmittedBA->ba_param_set = *pBaParamSet;
392 DeActivateBAEntry(ieee, pAdmittedBA);
393 ActivateBAEntry(ieee, pAdmittedBA, *pBaTimeoutVal);
395 pTS->bAddBaReqDelayed = true;
396 pTS->bDisable_AddBa = true;
397 ReasonCode = DELBA_REASON_END_BA;
398 goto OnADDBARsp_Reject;
407 BA.ba_param_set = *pBaParamSet;
408 rtllib_send_DELBA(ieee, dst, &BA, TX_DIR, ReasonCode);
413 int rtllib_rx_DELBA(struct rtllib_device *ieee, struct sk_buff *skb)
415 struct rtllib_hdr_3addr *delba = NULL;
416 union delba_param_set *pDelBaParamSet = NULL;
419 if (skb->len < sizeof(struct rtllib_hdr_3addr) + 6) {
420 netdev_warn(ieee->dev, "Invalid skb len in DELBA(%d / %d)\n",
422 (int)(sizeof(struct rtllib_hdr_3addr) + 6));
426 if (!ieee->current_network.qos_data.active ||
427 !ieee->pHTInfo->bCurrentHTSupport) {
428 netdev_warn(ieee->dev,
429 "received DELBA while QOS or HT is not supported(%d, %d)\n",
430 ieee->current_network. qos_data.active,
431 ieee->pHTInfo->bCurrentHTSupport);
436 print_hex_dump_bytes("%s: ", DUMP_PREFIX_NONE, skb->data,
439 delba = (struct rtllib_hdr_3addr *)skb->data;
440 dst = (u8 *)(&delba->addr2[0]);
441 pDelBaParamSet = (union delba_param_set *)&delba->payload[2];
443 if (pDelBaParamSet->field.initiator == 1) {
444 struct rx_ts_record *pRxTs;
446 if (!GetTs(ieee, (struct ts_common_info **)&pRxTs, dst,
447 (u8)pDelBaParamSet->field.tid, RX_DIR, false)) {
448 netdev_warn(ieee->dev,
449 "%s(): can't get TS for RXTS. dst:%pM TID:%d\n",
451 (u8)pDelBaParamSet->field.tid);
455 RxTsDeleteBA(ieee, pRxTs);
457 struct tx_ts_record *pTxTs;
459 if (!GetTs(ieee, (struct ts_common_info **)&pTxTs, dst,
460 (u8)pDelBaParamSet->field.tid, TX_DIR, false)) {
461 netdev_warn(ieee->dev, "%s(): can't get TS for TXTS\n",
466 pTxTs->bUsingBa = false;
467 pTxTs->bAddBaReqInProgress = false;
468 pTxTs->bAddBaReqDelayed = false;
469 del_timer_sync(&pTxTs->TsAddBaTimer);
470 TxTsDeleteBA(ieee, pTxTs);
475 void TsInitAddBA(struct rtllib_device *ieee, struct tx_ts_record *pTS,
476 u8 Policy, u8 bOverwritePending)
478 struct ba_record *pBA = &pTS->TxPendingBARecord;
480 if (pBA->b_valid && !bOverwritePending)
483 DeActivateBAEntry(ieee, pBA);
486 pBA->ba_param_set.field.amsdu_support = 0;
487 pBA->ba_param_set.field.ba_policy = Policy;
488 pBA->ba_param_set.field.tid = pTS->TsCommonInfo.TSpec.f.TSInfo.field.ucTSID;
489 pBA->ba_param_set.field.buffer_size = 32;
490 pBA->ba_timeout_value = 0;
491 pBA->ba_start_seq_ctrl.field.seq_num = (pTS->TxCurSeq + 3) % 4096;
493 ActivateBAEntry(ieee, pBA, BA_SETUP_TIMEOUT);
495 rtllib_send_ADDBAReq(ieee, pTS->TsCommonInfo.Addr, pBA);
498 void TsInitDelBA(struct rtllib_device *ieee,
499 struct ts_common_info *pTsCommonInfo,
500 enum tr_select TxRxSelect)
502 if (TxRxSelect == TX_DIR) {
503 struct tx_ts_record *pTxTs =
504 (struct tx_ts_record *)pTsCommonInfo;
506 if (TxTsDeleteBA(ieee, pTxTs))
507 rtllib_send_DELBA(ieee, pTsCommonInfo->Addr,
508 (pTxTs->TxAdmittedBARecord.b_valid) ?
509 (&pTxTs->TxAdmittedBARecord) :
510 (&pTxTs->TxPendingBARecord),
511 TxRxSelect, DELBA_REASON_END_BA);
512 } else if (TxRxSelect == RX_DIR) {
513 struct rx_ts_record *pRxTs =
514 (struct rx_ts_record *)pTsCommonInfo;
515 if (RxTsDeleteBA(ieee, pRxTs))
516 rtllib_send_DELBA(ieee, pTsCommonInfo->Addr,
517 &pRxTs->rx_admitted_ba_record,
518 TxRxSelect, DELBA_REASON_END_BA);
522 void BaSetupTimeOut(struct timer_list *t)
524 struct tx_ts_record *pTxTs = from_timer(pTxTs, t,
525 TxPendingBARecord.timer);
527 pTxTs->bAddBaReqInProgress = false;
528 pTxTs->bAddBaReqDelayed = true;
529 pTxTs->TxPendingBARecord.b_valid = false;
532 void TxBaInactTimeout(struct timer_list *t)
534 struct tx_ts_record *pTxTs = from_timer(pTxTs, t,
535 TxAdmittedBARecord.timer);
536 struct rtllib_device *ieee = container_of(pTxTs, struct rtllib_device,
537 TxTsRecord[pTxTs->num]);
538 TxTsDeleteBA(ieee, pTxTs);
539 rtllib_send_DELBA(ieee, pTxTs->TsCommonInfo.Addr,
540 &pTxTs->TxAdmittedBARecord, TX_DIR,
541 DELBA_REASON_TIMEOUT);
544 void RxBaInactTimeout(struct timer_list *t)
546 struct rx_ts_record *pRxTs = from_timer(pRxTs, t,
547 rx_admitted_ba_record.timer);
548 struct rtllib_device *ieee = container_of(pRxTs, struct rtllib_device,
549 RxTsRecord[pRxTs->num]);
551 RxTsDeleteBA(ieee, pRxTs);
552 rtllib_send_DELBA(ieee, pRxTs->ts_common_info.Addr,
553 &pRxTs->rx_admitted_ba_record, RX_DIR,
554 DELBA_REASON_TIMEOUT);