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- /******************************************************************************
- * Copyright(c) 2008 - 2010 Realtek Corporation. All rights reserved.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * The full GNU General Public License is included in this distribution in the
- * file called LICENSE.
- *
- * Contact Information:
- * wlanfae <wlanfae@realtek.com>
- ******************************************************************************/
- #include "rtllib.h"
- #include <linux/etherdevice.h>
- #include "rtl819x_TS.h"
- static void TsSetupTimeOut(unsigned long data)
- {
- }
- static void TsInactTimeout(unsigned long data)
- {
- }
- static void RxPktPendingTimeout(unsigned long data)
- {
- struct rx_ts_record *pRxTs = (struct rx_ts_record *)data;
- struct rtllib_device *ieee = container_of(pRxTs, struct rtllib_device,
- RxTsRecord[pRxTs->num]);
- struct rx_reorder_entry *pReorderEntry = NULL;
- unsigned long flags = 0;
- u8 index = 0;
- bool bPktInBuf = false;
- spin_lock_irqsave(&(ieee->reorder_spinlock), flags);
- if (pRxTs->RxTimeoutIndicateSeq != 0xffff) {
- while (!list_empty(&pRxTs->RxPendingPktList)) {
- pReorderEntry = (struct rx_reorder_entry *)
- list_entry(pRxTs->RxPendingPktList.prev,
- struct rx_reorder_entry, List);
- if (index == 0)
- pRxTs->RxIndicateSeq = pReorderEntry->SeqNum;
- if (SN_LESS(pReorderEntry->SeqNum,
- pRxTs->RxIndicateSeq) ||
- SN_EQUAL(pReorderEntry->SeqNum,
- pRxTs->RxIndicateSeq)) {
- list_del_init(&pReorderEntry->List);
- if (SN_EQUAL(pReorderEntry->SeqNum,
- pRxTs->RxIndicateSeq))
- pRxTs->RxIndicateSeq =
- (pRxTs->RxIndicateSeq + 1) % 4096;
- netdev_dbg(ieee->dev,
- "%s(): Indicate SeqNum: %d\n",
- __func__, pReorderEntry->SeqNum);
- ieee->stats_IndicateArray[index] =
- pReorderEntry->prxb;
- index++;
- list_add_tail(&pReorderEntry->List,
- &ieee->RxReorder_Unused_List);
- } else {
- bPktInBuf = true;
- break;
- }
- }
- }
- if (index > 0) {
- pRxTs->RxTimeoutIndicateSeq = 0xffff;
- if (index > REORDER_WIN_SIZE) {
- netdev_warn(ieee->dev,
- "%s(): Rx Reorder struct buffer full\n",
- __func__);
- spin_unlock_irqrestore(&(ieee->reorder_spinlock),
- flags);
- return;
- }
- rtllib_indicate_packets(ieee, ieee->stats_IndicateArray, index);
- bPktInBuf = false;
- }
- if (bPktInBuf && (pRxTs->RxTimeoutIndicateSeq == 0xffff)) {
- pRxTs->RxTimeoutIndicateSeq = pRxTs->RxIndicateSeq;
- mod_timer(&pRxTs->RxPktPendingTimer, jiffies +
- msecs_to_jiffies(ieee->pHTInfo->RxReorderPendingTime)
- );
- }
- spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
- }
- static void TsAddBaProcess(unsigned long data)
- {
- struct tx_ts_record *pTxTs = (struct tx_ts_record *)data;
- u8 num = pTxTs->num;
- struct rtllib_device *ieee = container_of(pTxTs, struct rtllib_device,
- TxTsRecord[num]);
- TsInitAddBA(ieee, pTxTs, BA_POLICY_IMMEDIATE, false);
- netdev_dbg(ieee->dev, "%s(): ADDBA Req is started\n", __func__);
- }
- static void ResetTsCommonInfo(struct ts_common_info *pTsCommonInfo)
- {
- eth_zero_addr(pTsCommonInfo->Addr);
- memset(&pTsCommonInfo->TSpec, 0, sizeof(union tspec_body));
- memset(&pTsCommonInfo->TClass, 0, sizeof(union qos_tclas)*TCLAS_NUM);
- pTsCommonInfo->TClasProc = 0;
- pTsCommonInfo->TClasNum = 0;
- }
- static void ResetTxTsEntry(struct tx_ts_record *pTS)
- {
- ResetTsCommonInfo(&pTS->TsCommonInfo);
- pTS->TxCurSeq = 0;
- pTS->bAddBaReqInProgress = false;
- pTS->bAddBaReqDelayed = false;
- pTS->bUsingBa = false;
- pTS->bDisable_AddBa = false;
- ResetBaEntry(&pTS->TxAdmittedBARecord);
- ResetBaEntry(&pTS->TxPendingBARecord);
- }
- static void ResetRxTsEntry(struct rx_ts_record *pTS)
- {
- ResetTsCommonInfo(&pTS->TsCommonInfo);
- pTS->RxIndicateSeq = 0xffff;
- pTS->RxTimeoutIndicateSeq = 0xffff;
- ResetBaEntry(&pTS->RxAdmittedBARecord);
- }
- void TSInitialize(struct rtllib_device *ieee)
- {
- struct tx_ts_record *pTxTS = ieee->TxTsRecord;
- struct rx_ts_record *pRxTS = ieee->RxTsRecord;
- struct rx_reorder_entry *pRxReorderEntry = ieee->RxReorderEntry;
- u8 count = 0;
- netdev_vdbg(ieee->dev, "%s()\n", __func__);
- INIT_LIST_HEAD(&ieee->Tx_TS_Admit_List);
- INIT_LIST_HEAD(&ieee->Tx_TS_Pending_List);
- INIT_LIST_HEAD(&ieee->Tx_TS_Unused_List);
- for (count = 0; count < TOTAL_TS_NUM; count++) {
- pTxTS->num = count;
- setup_timer(&pTxTS->TsCommonInfo.SetupTimer,
- TsSetupTimeOut,
- (unsigned long) pTxTS);
- setup_timer(&pTxTS->TsCommonInfo.InactTimer,
- TsInactTimeout,
- (unsigned long) pTxTS);
- setup_timer(&pTxTS->TsAddBaTimer,
- TsAddBaProcess,
- (unsigned long) pTxTS);
- setup_timer(&pTxTS->TxPendingBARecord.Timer,
- BaSetupTimeOut,
- (unsigned long) pTxTS);
- setup_timer(&pTxTS->TxAdmittedBARecord.Timer,
- TxBaInactTimeout,
- (unsigned long) pTxTS);
- ResetTxTsEntry(pTxTS);
- list_add_tail(&pTxTS->TsCommonInfo.List,
- &ieee->Tx_TS_Unused_List);
- pTxTS++;
- }
- INIT_LIST_HEAD(&ieee->Rx_TS_Admit_List);
- INIT_LIST_HEAD(&ieee->Rx_TS_Pending_List);
- INIT_LIST_HEAD(&ieee->Rx_TS_Unused_List);
- for (count = 0; count < TOTAL_TS_NUM; count++) {
- pRxTS->num = count;
- INIT_LIST_HEAD(&pRxTS->RxPendingPktList);
- setup_timer(&pRxTS->TsCommonInfo.SetupTimer,
- TsSetupTimeOut,
- (unsigned long) pRxTS);
- setup_timer(&pRxTS->TsCommonInfo.InactTimer,
- TsInactTimeout,
- (unsigned long) pRxTS);
- setup_timer(&pRxTS->RxAdmittedBARecord.Timer,
- RxBaInactTimeout,
- (unsigned long) pRxTS);
- setup_timer(&pRxTS->RxPktPendingTimer,
- RxPktPendingTimeout,
- (unsigned long) pRxTS);
- ResetRxTsEntry(pRxTS);
- list_add_tail(&pRxTS->TsCommonInfo.List,
- &ieee->Rx_TS_Unused_List);
- pRxTS++;
- }
- INIT_LIST_HEAD(&ieee->RxReorder_Unused_List);
- for (count = 0; count < REORDER_ENTRY_NUM; count++) {
- list_add_tail(&pRxReorderEntry->List,
- &ieee->RxReorder_Unused_List);
- if (count == (REORDER_ENTRY_NUM-1))
- break;
- pRxReorderEntry = &ieee->RxReorderEntry[count+1];
- }
- }
- static void AdmitTS(struct rtllib_device *ieee,
- struct ts_common_info *pTsCommonInfo, u32 InactTime)
- {
- del_timer_sync(&pTsCommonInfo->SetupTimer);
- del_timer_sync(&pTsCommonInfo->InactTimer);
- if (InactTime != 0)
- mod_timer(&pTsCommonInfo->InactTimer, jiffies +
- msecs_to_jiffies(InactTime));
- }
- static struct ts_common_info *SearchAdmitTRStream(struct rtllib_device *ieee,
- u8 *Addr, u8 TID,
- enum tr_select TxRxSelect)
- {
- u8 dir;
- bool search_dir[4] = {0};
- struct list_head *psearch_list;
- struct ts_common_info *pRet = NULL;
- if (ieee->iw_mode == IW_MODE_MASTER) {
- if (TxRxSelect == TX_DIR) {
- search_dir[DIR_DOWN] = true;
- search_dir[DIR_BI_DIR] = true;
- } else {
- search_dir[DIR_UP] = true;
- search_dir[DIR_BI_DIR] = true;
- }
- } else if (ieee->iw_mode == IW_MODE_ADHOC) {
- if (TxRxSelect == TX_DIR)
- search_dir[DIR_UP] = true;
- else
- search_dir[DIR_DOWN] = true;
- } else {
- if (TxRxSelect == TX_DIR) {
- search_dir[DIR_UP] = true;
- search_dir[DIR_BI_DIR] = true;
- search_dir[DIR_DIRECT] = true;
- } else {
- search_dir[DIR_DOWN] = true;
- search_dir[DIR_BI_DIR] = true;
- search_dir[DIR_DIRECT] = true;
- }
- }
- if (TxRxSelect == TX_DIR)
- psearch_list = &ieee->Tx_TS_Admit_List;
- else
- psearch_list = &ieee->Rx_TS_Admit_List;
- for (dir = 0; dir <= DIR_BI_DIR; dir++) {
- if (!search_dir[dir])
- continue;
- list_for_each_entry(pRet, psearch_list, List) {
- if (memcmp(pRet->Addr, Addr, 6) == 0 &&
- pRet->TSpec.f.TSInfo.field.ucTSID == TID &&
- pRet->TSpec.f.TSInfo.field.ucDirection == dir)
- break;
- }
- if (&pRet->List != psearch_list)
- break;
- }
- if (pRet && &pRet->List != psearch_list)
- return pRet;
- return NULL;
- }
- static void MakeTSEntry(struct ts_common_info *pTsCommonInfo, u8 *Addr,
- union tspec_body *pTSPEC, union qos_tclas *pTCLAS,
- u8 TCLAS_Num, u8 TCLAS_Proc)
- {
- u8 count;
- if (pTsCommonInfo == NULL)
- return;
- memcpy(pTsCommonInfo->Addr, Addr, 6);
- if (pTSPEC != NULL)
- memcpy((u8 *)(&(pTsCommonInfo->TSpec)), (u8 *)pTSPEC,
- sizeof(union tspec_body));
- for (count = 0; count < TCLAS_Num; count++)
- memcpy((u8 *)(&(pTsCommonInfo->TClass[count])),
- (u8 *)pTCLAS, sizeof(union qos_tclas));
- pTsCommonInfo->TClasProc = TCLAS_Proc;
- pTsCommonInfo->TClasNum = TCLAS_Num;
- }
- bool GetTs(struct rtllib_device *ieee, struct ts_common_info **ppTS,
- u8 *Addr, u8 TID, enum tr_select TxRxSelect, bool bAddNewTs)
- {
- u8 UP = 0;
- union tspec_body TSpec;
- union qos_tsinfo *pTSInfo = &TSpec.f.TSInfo;
- struct list_head *pUnusedList;
- struct list_head *pAddmitList;
- enum direction_value Dir;
- if (is_multicast_ether_addr(Addr)) {
- netdev_warn(ieee->dev, "Get TS for Broadcast or Multicast\n");
- return false;
- }
- if (ieee->current_network.qos_data.supported == 0) {
- UP = 0;
- } else {
- if (!IsACValid(TID)) {
- netdev_warn(ieee->dev, "%s(): TID(%d) is not valid\n",
- __func__, TID);
- return false;
- }
- switch (TID) {
- case 0:
- case 3:
- UP = 0;
- break;
- case 1:
- case 2:
- UP = 2;
- break;
- case 4:
- case 5:
- UP = 5;
- break;
- case 6:
- case 7:
- UP = 7;
- break;
- }
- }
- *ppTS = SearchAdmitTRStream(ieee, Addr, UP, TxRxSelect);
- if (*ppTS != NULL)
- return true;
- if (!bAddNewTs) {
- netdev_dbg(ieee->dev, "add new TS failed(tid:%d)\n", UP);
- return false;
- }
- pUnusedList = (TxRxSelect == TX_DIR) ?
- (&ieee->Tx_TS_Unused_List) :
- (&ieee->Rx_TS_Unused_List);
- pAddmitList = (TxRxSelect == TX_DIR) ?
- (&ieee->Tx_TS_Admit_List) :
- (&ieee->Rx_TS_Admit_List);
- Dir = (ieee->iw_mode == IW_MODE_MASTER) ?
- ((TxRxSelect == TX_DIR) ? DIR_DOWN : DIR_UP) :
- ((TxRxSelect == TX_DIR) ? DIR_UP : DIR_DOWN);
- if (!list_empty(pUnusedList)) {
- (*ppTS) = list_entry(pUnusedList->next,
- struct ts_common_info, List);
- list_del_init(&(*ppTS)->List);
- if (TxRxSelect == TX_DIR) {
- struct tx_ts_record *tmp =
- container_of(*ppTS,
- struct tx_ts_record,
- TsCommonInfo);
- ResetTxTsEntry(tmp);
- } else {
- struct rx_ts_record *tmp =
- container_of(*ppTS,
- struct rx_ts_record,
- TsCommonInfo);
- ResetRxTsEntry(tmp);
- }
- netdev_dbg(ieee->dev,
- "to init current TS, UP:%d, Dir:%d, addr: %pM ppTs=%p\n",
- UP, Dir, Addr, *ppTS);
- pTSInfo->field.ucTrafficType = 0;
- pTSInfo->field.ucTSID = UP;
- pTSInfo->field.ucDirection = Dir;
- pTSInfo->field.ucAccessPolicy = 1;
- pTSInfo->field.ucAggregation = 0;
- pTSInfo->field.ucPSB = 0;
- pTSInfo->field.ucUP = UP;
- pTSInfo->field.ucTSInfoAckPolicy = 0;
- pTSInfo->field.ucSchedule = 0;
- MakeTSEntry(*ppTS, Addr, &TSpec, NULL, 0, 0);
- AdmitTS(ieee, *ppTS, 0);
- list_add_tail(&((*ppTS)->List), pAddmitList);
- return true;
- }
- netdev_warn(ieee->dev,
- "There is not enough dir=%d(0=up down=1) TS record to be used!",
- Dir);
- return false;
- }
- static void RemoveTsEntry(struct rtllib_device *ieee,
- struct ts_common_info *pTs, enum tr_select TxRxSelect)
- {
- del_timer_sync(&pTs->SetupTimer);
- del_timer_sync(&pTs->InactTimer);
- TsInitDelBA(ieee, pTs, TxRxSelect);
- if (TxRxSelect == RX_DIR) {
- struct rx_reorder_entry *pRxReorderEntry;
- struct rx_ts_record *pRxTS = (struct rx_ts_record *)pTs;
- if (timer_pending(&pRxTS->RxPktPendingTimer))
- del_timer_sync(&pRxTS->RxPktPendingTimer);
- while (!list_empty(&pRxTS->RxPendingPktList)) {
- pRxReorderEntry = (struct rx_reorder_entry *)
- list_entry(pRxTS->RxPendingPktList.prev,
- struct rx_reorder_entry, List);
- netdev_dbg(ieee->dev, "%s(): Delete SeqNum %d!\n",
- __func__, pRxReorderEntry->SeqNum);
- list_del_init(&pRxReorderEntry->List);
- {
- int i = 0;
- struct rtllib_rxb *prxb = pRxReorderEntry->prxb;
- if (unlikely(!prxb))
- return;
- for (i = 0; i < prxb->nr_subframes; i++)
- dev_kfree_skb(prxb->subframes[i]);
- kfree(prxb);
- prxb = NULL;
- }
- list_add_tail(&pRxReorderEntry->List,
- &ieee->RxReorder_Unused_List);
- }
- } else {
- struct tx_ts_record *pTxTS = (struct tx_ts_record *)pTs;
- del_timer_sync(&pTxTS->TsAddBaTimer);
- }
- }
- void RemovePeerTS(struct rtllib_device *ieee, u8 *Addr)
- {
- struct ts_common_info *pTS, *pTmpTS;
- netdev_info(ieee->dev, "===========>RemovePeerTS, %pM\n", Addr);
- list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Pending_List, List) {
- if (memcmp(pTS->Addr, Addr, 6) == 0) {
- RemoveTsEntry(ieee, pTS, TX_DIR);
- list_del_init(&pTS->List);
- list_add_tail(&pTS->List, &ieee->Tx_TS_Unused_List);
- }
- }
- list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Admit_List, List) {
- if (memcmp(pTS->Addr, Addr, 6) == 0) {
- netdev_info(ieee->dev,
- "====>remove Tx_TS_admin_list\n");
- RemoveTsEntry(ieee, pTS, TX_DIR);
- list_del_init(&pTS->List);
- list_add_tail(&pTS->List, &ieee->Tx_TS_Unused_List);
- }
- }
- list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Pending_List, List) {
- if (memcmp(pTS->Addr, Addr, 6) == 0) {
- RemoveTsEntry(ieee, pTS, RX_DIR);
- list_del_init(&pTS->List);
- list_add_tail(&pTS->List, &ieee->Rx_TS_Unused_List);
- }
- }
- list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Admit_List, List) {
- if (memcmp(pTS->Addr, Addr, 6) == 0) {
- RemoveTsEntry(ieee, pTS, RX_DIR);
- list_del_init(&pTS->List);
- list_add_tail(&pTS->List, &ieee->Rx_TS_Unused_List);
- }
- }
- }
- EXPORT_SYMBOL(RemovePeerTS);
- void RemoveAllTS(struct rtllib_device *ieee)
- {
- struct ts_common_info *pTS, *pTmpTS;
- list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Pending_List, List) {
- RemoveTsEntry(ieee, pTS, TX_DIR);
- list_del_init(&pTS->List);
- list_add_tail(&pTS->List, &ieee->Tx_TS_Unused_List);
- }
- list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Admit_List, List) {
- RemoveTsEntry(ieee, pTS, TX_DIR);
- list_del_init(&pTS->List);
- list_add_tail(&pTS->List, &ieee->Tx_TS_Unused_List);
- }
- list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Pending_List, List) {
- RemoveTsEntry(ieee, pTS, RX_DIR);
- list_del_init(&pTS->List);
- list_add_tail(&pTS->List, &ieee->Rx_TS_Unused_List);
- }
- list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Admit_List, List) {
- RemoveTsEntry(ieee, pTS, RX_DIR);
- list_del_init(&pTS->List);
- list_add_tail(&pTS->List, &ieee->Rx_TS_Unused_List);
- }
- }
- void TsStartAddBaProcess(struct rtllib_device *ieee, struct tx_ts_record *pTxTS)
- {
- if (pTxTS->bAddBaReqInProgress == false) {
- pTxTS->bAddBaReqInProgress = true;
- if (pTxTS->bAddBaReqDelayed) {
- netdev_dbg(ieee->dev, "Start ADDBA after 60 sec!!\n");
- mod_timer(&pTxTS->TsAddBaTimer, jiffies +
- msecs_to_jiffies(TS_ADDBA_DELAY));
- } else {
- netdev_dbg(ieee->dev, "Immediately Start ADDBA\n");
- mod_timer(&pTxTS->TsAddBaTimer, jiffies+10);
- }
- } else
- netdev_dbg(ieee->dev, "BA timer is already added\n");
- }
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