// SPDX-License-Identifier: GPL-2.0
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#include "ieee80211.h"
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#include <linux/etherdevice.h>
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#include <linux/slab.h>
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#include "rtl819x_TS.h"
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static void TsSetupTimeOut(struct timer_list *unused)
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{
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// Not implement yet
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// This is used for WMMSA and ACM , that would send ADDTSReq frame.
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}
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static void TsInactTimeout(struct timer_list *unused)
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{
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// Not implement yet
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// This is used for WMMSA and ACM.
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// This function would be call when TS is no Tx/Rx for some period of time.
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}
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/********************************************************************************************************************
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*function: I still not understand this function, so wait for further implementation
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* input: unsigned long data //acturally we send struct tx_ts_record or struct rx_ts_record to these timer
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* return: NULL
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* notice:
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********************************************************************************************************************/
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static void RxPktPendingTimeout(struct timer_list *t)
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{
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struct rx_ts_record *pRxTs = from_timer(pRxTs, t, rx_pkt_pending_timer);
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struct ieee80211_device *ieee = container_of(pRxTs, struct ieee80211_device, RxTsRecord[pRxTs->num]);
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struct rx_reorder_entry *pReorderEntry = NULL;
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//u32 flags = 0;
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unsigned long flags = 0;
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u8 index = 0;
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bool bPktInBuf = false;
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spin_lock_irqsave(&(ieee->reorder_spinlock), flags);
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IEEE80211_DEBUG(IEEE80211_DL_REORDER, "==================>%s()\n", __func__);
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if (pRxTs->rx_timeout_indicate_seq != 0xffff) {
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// Indicate the pending packets sequentially according to SeqNum until meet the gap.
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while (!list_empty(&pRxTs->rx_pending_pkt_list)) {
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pReorderEntry = list_entry(pRxTs->rx_pending_pkt_list.prev, struct rx_reorder_entry, List);
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if (index == 0)
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pRxTs->rx_indicate_seq = pReorderEntry->SeqNum;
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if (SN_LESS(pReorderEntry->SeqNum, pRxTs->rx_indicate_seq) ||
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SN_EQUAL(pReorderEntry->SeqNum, pRxTs->rx_indicate_seq)) {
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list_del_init(&pReorderEntry->List);
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if (SN_EQUAL(pReorderEntry->SeqNum, pRxTs->rx_indicate_seq))
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pRxTs->rx_indicate_seq = (pRxTs->rx_indicate_seq + 1) % 4096;
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IEEE80211_DEBUG(IEEE80211_DL_REORDER, "%s: IndicateSeq: %d\n", __func__, pReorderEntry->SeqNum);
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ieee->stats_IndicateArray[index] = pReorderEntry->prxb;
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index++;
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list_add_tail(&pReorderEntry->List, &ieee->RxReorder_Unused_List);
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} else {
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bPktInBuf = true;
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break;
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}
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}
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}
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if (index > 0) {
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// Set rx_timeout_indicate_seq to 0xffff to indicate no pending packets in buffer now.
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pRxTs->rx_timeout_indicate_seq = 0xffff;
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// Indicate packets
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if (index > REORDER_WIN_SIZE) {
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IEEE80211_DEBUG(IEEE80211_DL_ERR, "RxReorderIndicatePacket(): Rx Reorder buffer full!! \n");
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spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
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return;
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}
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ieee80211_indicate_packets(ieee, ieee->stats_IndicateArray, index);
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}
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if (bPktInBuf && (pRxTs->rx_timeout_indicate_seq == 0xffff)) {
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pRxTs->rx_timeout_indicate_seq = pRxTs->rx_indicate_seq;
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mod_timer(&pRxTs->rx_pkt_pending_timer,
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jiffies + msecs_to_jiffies(ieee->pHTInfo->RxReorderPendingTime));
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}
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spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
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}
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/********************************************************************************************************************
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*function: Add BA timer function
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* input: unsigned long data //acturally we send struct tx_ts_record or struct rx_ts_record to these timer
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* return: NULL
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* notice:
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********************************************************************************************************************/
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static void TsAddBaProcess(struct timer_list *t)
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{
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struct tx_ts_record *pTxTs = from_timer(pTxTs, t, ts_add_ba_timer);
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u8 num = pTxTs->num;
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struct ieee80211_device *ieee = container_of(pTxTs, struct ieee80211_device, TxTsRecord[num]);
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TsInitAddBA(ieee, pTxTs, BA_POLICY_IMMEDIATE, false);
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IEEE80211_DEBUG(IEEE80211_DL_BA, "%s: ADDBA Req is started!! \n", __func__);
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}
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static void ResetTsCommonInfo(struct ts_common_info *pTsCommonInfo)
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{
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eth_zero_addr(pTsCommonInfo->addr);
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memset(&pTsCommonInfo->t_spec, 0, sizeof(struct tspec_body));
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memset(&pTsCommonInfo->t_class, 0, sizeof(union qos_tclas) * TCLAS_NUM);
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pTsCommonInfo->t_clas_proc = 0;
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pTsCommonInfo->t_clas_num = 0;
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}
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static void ResetTxTsEntry(struct tx_ts_record *pTS)
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{
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ResetTsCommonInfo(&pTS->ts_common_info);
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pTS->tx_cur_seq = 0;
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pTS->add_ba_req_in_progress = false;
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pTS->add_ba_req_delayed = false;
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pTS->using_ba = false;
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ResetBaEntry(&pTS->tx_admitted_ba_record); //For BA Originator
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ResetBaEntry(&pTS->tx_pending_ba_record);
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}
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static void ResetRxTsEntry(struct rx_ts_record *pTS)
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{
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ResetTsCommonInfo(&pTS->ts_common_info);
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pTS->rx_indicate_seq = 0xffff; // This indicate the rx_indicate_seq is not used now!!
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pTS->rx_timeout_indicate_seq = 0xffff; // This indicate the rx_timeout_indicate_seq is not used now!!
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ResetBaEntry(&pTS->rx_admitted_ba_record); // For BA Recipient
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}
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void TSInitialize(struct ieee80211_device *ieee)
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{
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struct tx_ts_record *pTxTS = ieee->TxTsRecord;
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struct rx_ts_record *pRxTS = ieee->RxTsRecord;
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struct rx_reorder_entry *pRxReorderEntry = ieee->RxReorderEntry;
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u8 count = 0;
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IEEE80211_DEBUG(IEEE80211_DL_TS, "==========>%s()\n", __func__);
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// Initialize Tx TS related info.
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INIT_LIST_HEAD(&ieee->Tx_TS_Admit_List);
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INIT_LIST_HEAD(&ieee->Tx_TS_Pending_List);
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INIT_LIST_HEAD(&ieee->Tx_TS_Unused_List);
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for (count = 0; count < TOTAL_TS_NUM; count++) {
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//
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pTxTS->num = count;
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// The timers for the operation of Traffic Stream and Block Ack.
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// DLS related timer will be add here in the future!!
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timer_setup(&pTxTS->ts_common_info.setup_timer, TsSetupTimeOut,
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0);
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timer_setup(&pTxTS->ts_common_info.inact_timer, TsInactTimeout,
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0);
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timer_setup(&pTxTS->ts_add_ba_timer, TsAddBaProcess, 0);
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timer_setup(&pTxTS->tx_pending_ba_record.timer, BaSetupTimeOut,
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0);
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timer_setup(&pTxTS->tx_admitted_ba_record.timer,
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TxBaInactTimeout, 0);
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ResetTxTsEntry(pTxTS);
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list_add_tail(&pTxTS->ts_common_info.list, &ieee->Tx_TS_Unused_List);
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pTxTS++;
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}
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// Initialize Rx TS related info.
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INIT_LIST_HEAD(&ieee->Rx_TS_Admit_List);
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INIT_LIST_HEAD(&ieee->Rx_TS_Pending_List);
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INIT_LIST_HEAD(&ieee->Rx_TS_Unused_List);
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for (count = 0; count < TOTAL_TS_NUM; count++) {
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pRxTS->num = count;
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INIT_LIST_HEAD(&pRxTS->rx_pending_pkt_list);
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timer_setup(&pRxTS->ts_common_info.setup_timer, TsSetupTimeOut,
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0);
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timer_setup(&pRxTS->ts_common_info.inact_timer, TsInactTimeout,
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0);
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timer_setup(&pRxTS->rx_admitted_ba_record.timer,
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RxBaInactTimeout, 0);
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timer_setup(&pRxTS->rx_pkt_pending_timer, RxPktPendingTimeout, 0);
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ResetRxTsEntry(pRxTS);
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list_add_tail(&pRxTS->ts_common_info.list, &ieee->Rx_TS_Unused_List);
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pRxTS++;
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}
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// Initialize unused Rx Reorder List.
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INIT_LIST_HEAD(&ieee->RxReorder_Unused_List);
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for (count = 0; count < REORDER_ENTRY_NUM; count++) {
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list_add_tail(&pRxReorderEntry->List, &ieee->RxReorder_Unused_List);
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if (count == (REORDER_ENTRY_NUM - 1))
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break;
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pRxReorderEntry = &ieee->RxReorderEntry[count + 1];
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}
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}
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static void AdmitTS(struct ieee80211_device *ieee,
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struct ts_common_info *pTsCommonInfo, u32 InactTime)
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{
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del_timer_sync(&pTsCommonInfo->setup_timer);
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del_timer_sync(&pTsCommonInfo->inact_timer);
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if (InactTime != 0)
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mod_timer(&pTsCommonInfo->inact_timer,
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jiffies + msecs_to_jiffies(InactTime));
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}
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static struct ts_common_info *SearchAdmitTRStream(struct ieee80211_device *ieee,
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u8 *Addr, u8 TID,
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enum tr_select TxRxSelect)
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{
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//DIRECTION_VALUE dir;
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u8 dir;
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bool search_dir[4] = {0};
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struct list_head *psearch_list; //FIXME
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struct ts_common_info *pRet = NULL;
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if (ieee->iw_mode == IW_MODE_MASTER) { //ap mode
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if (TxRxSelect == TX_DIR) {
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search_dir[DIR_DOWN] = true;
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search_dir[DIR_BI_DIR] = true;
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} else {
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search_dir[DIR_UP] = true;
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search_dir[DIR_BI_DIR] = true;
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}
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} else if (ieee->iw_mode == IW_MODE_ADHOC) {
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if (TxRxSelect == TX_DIR)
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search_dir[DIR_UP] = true;
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else
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search_dir[DIR_DOWN] = true;
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} else {
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if (TxRxSelect == TX_DIR) {
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search_dir[DIR_UP] = true;
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search_dir[DIR_BI_DIR] = true;
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search_dir[DIR_DIRECT] = true;
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} else {
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search_dir[DIR_DOWN] = true;
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search_dir[DIR_BI_DIR] = true;
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search_dir[DIR_DIRECT] = true;
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}
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}
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if (TxRxSelect == TX_DIR)
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psearch_list = &ieee->Tx_TS_Admit_List;
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else
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psearch_list = &ieee->Rx_TS_Admit_List;
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//for(dir = DIR_UP; dir <= DIR_BI_DIR; dir++)
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for (dir = 0; dir <= DIR_BI_DIR; dir++) {
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if (!search_dir[dir])
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continue;
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list_for_each_entry(pRet, psearch_list, list) {
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// IEEE80211_DEBUG(IEEE80211_DL_TS, "ADD:%pM, TID:%d, dir:%d\n", pRet->Addr, pRet->TSpec.ts_info.ucTSID, pRet->TSpec.ts_info.ucDirection);
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if (memcmp(pRet->addr, Addr, 6) == 0)
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if (pRet->t_spec.ts_info.uc_tsid == TID)
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if (pRet->t_spec.ts_info.uc_direction == dir) {
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// printk("Bingo! got it\n");
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break;
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}
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}
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if (&pRet->list != psearch_list)
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break;
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}
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if (&pRet->list != psearch_list)
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return pRet;
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else
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return NULL;
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}
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static void MakeTSEntry(struct ts_common_info *pTsCommonInfo, u8 *Addr,
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struct tspec_body *pTSPEC, union qos_tclas *pTCLAS, u8 TCLAS_Num,
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u8 TCLAS_Proc)
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{
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u8 count;
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if (pTsCommonInfo == NULL)
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return;
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memcpy(pTsCommonInfo->addr, Addr, 6);
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if (pTSPEC != NULL)
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memcpy((u8 *)(&(pTsCommonInfo->t_spec)), (u8 *)pTSPEC, sizeof(struct tspec_body));
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for (count = 0; count < TCLAS_Num; count++)
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memcpy((u8 *)(&(pTsCommonInfo->t_class[count])), (u8 *)pTCLAS, sizeof(union qos_tclas));
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pTsCommonInfo->t_clas_proc = TCLAS_Proc;
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pTsCommonInfo->t_clas_num = TCLAS_Num;
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}
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bool GetTs(
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struct ieee80211_device *ieee,
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struct ts_common_info **ppTS,
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u8 *Addr,
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u8 TID,
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enum tr_select TxRxSelect, //Rx:1, Tx:0
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bool bAddNewTs
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)
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{
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u8 UP = 0;
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//
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// We do not build any TS for Broadcast or Multicast stream.
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// So reject these kinds of search here.
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//
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if (is_multicast_ether_addr(Addr)) {
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IEEE80211_DEBUG(IEEE80211_DL_ERR, "get TS for Broadcast or Multicast\n");
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return false;
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}
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if (ieee->current_network.qos_data.supported == 0) {
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UP = 0;
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} else {
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// In WMM case: we use 4 TID only
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if (!is_ac_valid(TID)) {
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IEEE80211_DEBUG(IEEE80211_DL_ERR, " in %s(), TID(%d) is not valid\n", __func__, TID);
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return false;
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}
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switch (TID) {
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case 0:
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case 3:
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UP = 0;
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break;
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case 1:
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case 2:
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UP = 2;
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break;
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case 4:
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case 5:
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UP = 5;
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break;
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case 6:
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case 7:
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UP = 7;
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break;
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}
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}
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*ppTS = SearchAdmitTRStream(
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ieee,
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Addr,
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UP,
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TxRxSelect);
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if (*ppTS != NULL) {
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return true;
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} else {
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if (!bAddNewTs) {
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IEEE80211_DEBUG(IEEE80211_DL_TS, "add new TS failed(tid:%d)\n", UP);
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return false;
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} else {
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//
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// Create a new Traffic stream for current Tx/Rx
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// This is for EDCA and WMM to add a new TS.
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// For HCCA or WMMSA, TS cannot be addmit without negotiation.
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//
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struct tspec_body TSpec;
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struct qos_tsinfo *pTSInfo = &TSpec.ts_info;
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struct list_head *pUnusedList =
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(TxRxSelect == TX_DIR) ?
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(&ieee->Tx_TS_Unused_List) :
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(&ieee->Rx_TS_Unused_List);
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struct list_head *pAddmitList =
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(TxRxSelect == TX_DIR) ?
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(&ieee->Tx_TS_Admit_List) :
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(&ieee->Rx_TS_Admit_List);
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enum direction_value Dir = (ieee->iw_mode == IW_MODE_MASTER) ?
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((TxRxSelect == TX_DIR) ? DIR_DOWN : DIR_UP) :
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((TxRxSelect == TX_DIR) ? DIR_UP : DIR_DOWN);
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IEEE80211_DEBUG(IEEE80211_DL_TS, "to add Ts\n");
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if (!list_empty(pUnusedList)) {
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(*ppTS) = list_entry(pUnusedList->next, struct ts_common_info, list);
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list_del_init(&(*ppTS)->list);
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if (TxRxSelect == TX_DIR) {
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struct tx_ts_record *tmp = container_of(*ppTS, struct tx_ts_record, ts_common_info);
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ResetTxTsEntry(tmp);
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} else {
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struct rx_ts_record *tmp = container_of(*ppTS, struct rx_ts_record, ts_common_info);
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ResetRxTsEntry(tmp);
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}
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IEEE80211_DEBUG(IEEE80211_DL_TS, "to init current TS, UP:%d, Dir:%d, addr:%pM\n", UP, Dir, Addr);
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// Prepare TS Info related field
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pTSInfo->uc_traffic_type = 0; // Traffic type: WMM is reserved in this field
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pTSInfo->uc_tsid = UP; // TSID
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pTSInfo->uc_direction = Dir; // Direction: if there is DirectLink, this need additional consideration.
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pTSInfo->uc_access_policy = 1; // Access policy
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pTSInfo->uc_aggregation = 0; // Aggregation
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pTSInfo->uc_psb = 0; // Aggregation
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pTSInfo->uc_up = UP; // User priority
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pTSInfo->uc_ts_info_ack_policy = 0; // Ack policy
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pTSInfo->uc_schedule = 0; // Schedule
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MakeTSEntry(*ppTS, Addr, &TSpec, NULL, 0, 0);
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AdmitTS(ieee, *ppTS, 0);
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list_add_tail(&((*ppTS)->list), pAddmitList);
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// if there is DirectLink, we need to do additional operation here!!
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return true;
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} else {
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IEEE80211_DEBUG(IEEE80211_DL_ERR, "in function %s() There is not enough TS record to be used!!", __func__);
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return false;
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}
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}
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}
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}
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static void RemoveTsEntry(struct ieee80211_device *ieee, struct ts_common_info *pTs,
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enum tr_select TxRxSelect)
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{
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//u32 flags = 0;
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unsigned long flags = 0;
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del_timer_sync(&pTs->setup_timer);
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del_timer_sync(&pTs->inact_timer);
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TsInitDelBA(ieee, pTs, TxRxSelect);
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if (TxRxSelect == RX_DIR) {
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struct rx_reorder_entry *pRxReorderEntry;
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struct rx_ts_record *pRxTS = (struct rx_ts_record *)pTs;
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if (timer_pending(&pRxTS->rx_pkt_pending_timer))
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del_timer_sync(&pRxTS->rx_pkt_pending_timer);
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while (!list_empty(&pRxTS->rx_pending_pkt_list)) {
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spin_lock_irqsave(&(ieee->reorder_spinlock), flags);
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//pRxReorderEntry = list_entry(&pRxTS->rx_pending_pkt_list.prev,RX_REORDER_ENTRY,List);
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pRxReorderEntry = list_entry(pRxTS->rx_pending_pkt_list.prev, struct rx_reorder_entry, List);
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list_del_init(&pRxReorderEntry->List);
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{
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int i = 0;
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struct ieee80211_rxb *prxb = pRxReorderEntry->prxb;
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if (unlikely(!prxb)) {
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spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
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return;
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}
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for (i = 0; i < prxb->nr_subframes; i++)
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dev_kfree_skb(prxb->subframes[i]);
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kfree(prxb);
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prxb = NULL;
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}
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list_add_tail(&pRxReorderEntry->List, &ieee->RxReorder_Unused_List);
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spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
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}
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} else {
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struct tx_ts_record *pTxTS = (struct tx_ts_record *)pTs;
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del_timer_sync(&pTxTS->ts_add_ba_timer);
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}
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}
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void RemovePeerTS(struct ieee80211_device *ieee, u8 *Addr)
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{
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struct ts_common_info *pTS, *pTmpTS;
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printk("===========>%s,%pM\n", __func__, Addr);
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list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Pending_List, list) {
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if (memcmp(pTS->addr, Addr, 6) == 0) {
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RemoveTsEntry(ieee, pTS, TX_DIR);
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list_del_init(&pTS->list);
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list_add_tail(&pTS->list, &ieee->Tx_TS_Unused_List);
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}
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}
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list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Admit_List, list) {
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if (memcmp(pTS->addr, Addr, 6) == 0) {
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printk("====>remove Tx_TS_admin_list\n");
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RemoveTsEntry(ieee, pTS, TX_DIR);
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list_del_init(&pTS->list);
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list_add_tail(&pTS->list, &ieee->Tx_TS_Unused_List);
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}
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}
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list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Pending_List, list) {
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if (memcmp(pTS->addr, Addr, 6) == 0) {
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RemoveTsEntry(ieee, pTS, RX_DIR);
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list_del_init(&pTS->list);
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list_add_tail(&pTS->list, &ieee->Rx_TS_Unused_List);
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}
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}
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list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Admit_List, list) {
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if (memcmp(pTS->addr, Addr, 6) == 0) {
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RemoveTsEntry(ieee, pTS, RX_DIR);
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list_del_init(&pTS->list);
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list_add_tail(&pTS->list, &ieee->Rx_TS_Unused_List);
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}
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}
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}
|
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void RemoveAllTS(struct ieee80211_device *ieee)
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{
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struct ts_common_info *pTS, *pTmpTS;
|
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list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Pending_List, list) {
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RemoveTsEntry(ieee, pTS, TX_DIR);
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list_del_init(&pTS->list);
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list_add_tail(&pTS->list, &ieee->Tx_TS_Unused_List);
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}
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list_for_each_entry_safe(pTS, pTmpTS, &ieee->Tx_TS_Admit_List, list) {
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RemoveTsEntry(ieee, pTS, TX_DIR);
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list_del_init(&pTS->list);
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list_add_tail(&pTS->list, &ieee->Tx_TS_Unused_List);
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}
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list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Pending_List, list) {
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RemoveTsEntry(ieee, pTS, RX_DIR);
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list_del_init(&pTS->list);
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list_add_tail(&pTS->list, &ieee->Rx_TS_Unused_List);
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}
|
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list_for_each_entry_safe(pTS, pTmpTS, &ieee->Rx_TS_Admit_List, list) {
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RemoveTsEntry(ieee, pTS, RX_DIR);
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list_del_init(&pTS->list);
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list_add_tail(&pTS->list, &ieee->Rx_TS_Unused_List);
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}
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}
|
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void TsStartAddBaProcess(struct ieee80211_device *ieee, struct tx_ts_record *pTxTS)
|
{
|
if (!pTxTS->add_ba_req_in_progress) {
|
pTxTS->add_ba_req_in_progress = true;
|
if (pTxTS->add_ba_req_delayed) {
|
IEEE80211_DEBUG(IEEE80211_DL_BA, "%s: Delayed Start ADDBA after 60 sec!!\n", __func__);
|
mod_timer(&pTxTS->ts_add_ba_timer,
|
jiffies + msecs_to_jiffies(TS_ADDBA_DELAY));
|
} else {
|
IEEE80211_DEBUG(IEEE80211_DL_BA, "%s: Immediately Start ADDBA now!!\n", __func__);
|
mod_timer(&pTxTS->ts_add_ba_timer, jiffies + 10); //set 10 ticks
|
}
|
} else {
|
IEEE80211_DEBUG(IEEE80211_DL_ERR, "%s()==>BA timer is already added\n", __func__);
|
}
|
}
|
