cregit-Linux how code gets into the kernel

Release 4.11 drivers/staging/rtl8192e/rtl819x_TSProc.c

/******************************************************************************
 * 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) { }

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static void TsInactTimeout(unsigned long data) { }

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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); }

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Vaishali Thakkar10.28%110.00%
Total360100.00%10100.00%


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__); }

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Total69100.00%5100.00%


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; }

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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); }

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Total65100.00%4100.00%


static void ResetRxTsEntry(struct rx_ts_record *pTS) { ResetTsCommonInfo(&pTS->TsCommonInfo); pTS->RxIndicateSeq = 0xffff; pTS->RxTimeoutIndicateSeq = 0xffff; ResetBaEntry(&pTS->RxAdmittedBARecord); }

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Total39100.00%3100.00%


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]; } }

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Greg Kroah-Hartman34182.37%114.29%
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Gnanachandran Dhanapal92.17%114.29%
Mateusz Kulikowski51.21%114.29%
Total414100.00%7100.00%


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)); }

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Greg Kroah-Hartman5089.29%120.00%
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Vaishali Thakkar11.79%120.00%
Total56100.00%5100.00%


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; }

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Valentina Manea10.32%112.50%
Total312100.00%8100.00%


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; }

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static bool IsACValid(unsigned int tid) { return tid < 7; }

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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; }

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Valentina Manea10.18%19.09%
Total546100.00%11100.00%


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); } }

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Larry Finger3815.83%770.00%
Mateusz Kulikowski52.08%220.00%
Total240100.00%10100.00%


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); } } }

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Larry Finger62.16%360.00%
Total278100.00%5100.00%

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); } }

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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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Greg Kroah-Hartman7779.38%120.00%
Mateusz Kulikowski1515.46%120.00%
Larry Finger44.12%240.00%
Vaishali Thakkar11.03%120.00%
Total97100.00%5100.00%


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Greg Kroah-Hartman252986.73%13.85%
Larry Finger2348.02%1246.15%
Mateusz Kulikowski1174.01%623.08%
Arnd Bergmann150.51%13.85%
Gnanachandran Dhanapal90.31%13.85%
Sean MacLennan50.17%13.85%
Vaishali Thakkar40.14%27.69%
Valentina Manea20.07%13.85%
Yamanappagouda Patil10.03%13.85%
Total2916100.00%26100.00%
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