451 lines
12 KiB
C
451 lines
12 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright(c) 2008 - 2010 Realtek Corporation. All rights reserved.
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*
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* Contact Information: wlanfae <wlanfae@realtek.com>
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*/
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#include "rtllib.h"
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#include <linux/etherdevice.h>
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#include "rtl819x_TS.h"
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static void RxPktPendingTimeout(struct timer_list *t)
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{
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struct rx_ts_record *ts = from_timer(ts, t, rx_pkt_pending_timer);
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struct rtllib_device *ieee = container_of(ts, struct rtllib_device,
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rx_ts_records[ts->num]);
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struct rx_reorder_entry *pReorderEntry = NULL;
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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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if (ts->rx_timeout_indicate_seq != 0xffff) {
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while (!list_empty(&ts->rx_pending_pkt_list)) {
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pReorderEntry = (struct rx_reorder_entry *)
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list_entry(ts->rx_pending_pkt_list.prev,
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struct rx_reorder_entry, list);
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if (index == 0)
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ts->rx_indicate_seq = pReorderEntry->SeqNum;
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if (SN_LESS(pReorderEntry->SeqNum,
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ts->rx_indicate_seq) ||
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SN_EQUAL(pReorderEntry->SeqNum,
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ts->rx_indicate_seq)) {
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list_del_init(&pReorderEntry->list);
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if (SN_EQUAL(pReorderEntry->SeqNum,
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ts->rx_indicate_seq))
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ts->rx_indicate_seq =
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(ts->rx_indicate_seq + 1) % 4096;
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netdev_dbg(ieee->dev,
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"%s(): Indicate SeqNum: %d\n",
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__func__, pReorderEntry->SeqNum);
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ieee->stats_IndicateArray[index] =
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pReorderEntry->prxb;
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index++;
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list_add_tail(&pReorderEntry->list,
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&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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ts->rx_timeout_indicate_seq = 0xffff;
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if (index > REORDER_WIN_SIZE) {
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netdev_warn(ieee->dev,
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"%s(): Rx Reorder struct buffer full\n",
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__func__);
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spin_unlock_irqrestore(&(ieee->reorder_spinlock),
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flags);
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return;
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}
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rtllib_indicate_packets(ieee, ieee->stats_IndicateArray, index);
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bPktInBuf = false;
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}
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if (bPktInBuf && (ts->rx_timeout_indicate_seq == 0xffff)) {
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ts->rx_timeout_indicate_seq = ts->rx_indicate_seq;
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mod_timer(&ts->rx_pkt_pending_timer, jiffies +
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msecs_to_jiffies(ieee->ht_info->rx_reorder_pending_time)
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);
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}
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spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
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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 *ts = from_timer(ts, t, ts_add_ba_timer);
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u8 num = ts->num;
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struct rtllib_device *ieee = container_of(ts, struct rtllib_device,
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tx_ts_records[num]);
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rtllib_ts_init_add_ba(ieee, ts, BA_POLICY_IMMEDIATE, false);
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netdev_dbg(ieee->dev, "%s(): ADDBA Req is started\n", __func__);
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}
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static void ResetTsCommonInfo(struct ts_common_info *ts_common_info)
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{
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eth_zero_addr(ts_common_info->addr);
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memset(&ts_common_info->tspec, 0, sizeof(struct qos_tsinfo));
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}
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static void ResetTxTsEntry(struct tx_ts_record *ts)
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{
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ResetTsCommonInfo(&ts->ts_common_info);
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ts->tx_cur_seq = 0;
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ts->add_ba_req_in_progress = false;
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ts->add_ba_req_delayed = false;
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ts->using_ba = false;
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ts->disable_add_ba = false;
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rtllib_reset_ba_entry(&ts->tx_admitted_ba_record);
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rtllib_reset_ba_entry(&ts->tx_pending_ba_record);
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}
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static void ResetRxTsEntry(struct rx_ts_record *ts)
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{
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ResetTsCommonInfo(&ts->ts_common_info);
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ts->rx_indicate_seq = 0xffff;
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ts->rx_timeout_indicate_seq = 0xffff;
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rtllib_reset_ba_entry(&ts->rx_admitted_ba_record);
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}
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void rtllib_ts_init(struct rtllib_device *ieee)
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{
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struct tx_ts_record *pTxTS = ieee->tx_ts_records;
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struct rx_ts_record *rxts = ieee->rx_ts_records;
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struct rx_reorder_entry *pRxReorderEntry = ieee->RxReorderEntry;
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u8 count = 0;
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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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pTxTS->num = count;
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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, rtllib_ba_setup_timeout,
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0);
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timer_setup(&pTxTS->tx_admitted_ba_record.timer,
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rtllib_tx_ba_inact_timeout, 0);
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ResetTxTsEntry(pTxTS);
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list_add_tail(&pTxTS->ts_common_info.list,
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&ieee->Tx_TS_Unused_List);
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pTxTS++;
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}
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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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rxts->num = count;
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INIT_LIST_HEAD(&rxts->rx_pending_pkt_list);
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timer_setup(&rxts->rx_admitted_ba_record.timer,
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rtllib_rx_ba_inact_timeout, 0);
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timer_setup(&rxts->rx_pkt_pending_timer, RxPktPendingTimeout, 0);
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ResetRxTsEntry(rxts);
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list_add_tail(&rxts->ts_common_info.list,
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&ieee->Rx_TS_Unused_List);
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rxts++;
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}
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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,
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&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 struct ts_common_info *SearchAdmitTRStream(struct rtllib_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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u8 dir;
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bool search_dir[4] = {0};
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struct list_head *psearch_list;
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struct ts_common_info *pRet = NULL;
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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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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 = 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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if (memcmp(pRet->addr, addr, 6) == 0 &&
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pRet->tspec.ts_id == TID &&
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pRet->tspec.ucDirection == dir)
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break;
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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 && &pRet->list != psearch_list)
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return pRet;
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return NULL;
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}
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static void MakeTSEntry(struct ts_common_info *ts_common_info, u8 *addr,
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struct qos_tsinfo *pTSPEC)
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{
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if (!ts_common_info)
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return;
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memcpy(ts_common_info->addr, addr, 6);
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if (pTSPEC)
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memcpy((u8 *)(&(ts_common_info->tspec)), (u8 *)pTSPEC,
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sizeof(struct qos_tsinfo));
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}
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bool rtllib_get_ts(struct rtllib_device *ieee, struct ts_common_info **ppTS,
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u8 *addr, u8 TID, enum tr_select TxRxSelect, bool bAddNewTs)
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{
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u8 UP = 0;
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struct qos_tsinfo tspec;
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struct qos_tsinfo *ts_info = &tspec;
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struct list_head *pUnusedList;
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struct list_head *pAddmitList;
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enum direction_value Dir;
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if (is_multicast_ether_addr(addr)) {
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netdev_warn(ieee->dev, "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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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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default:
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netdev_warn(ieee->dev, "%s(): TID(%d) is not valid\n",
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__func__, TID);
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return false;
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}
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}
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*ppTS = SearchAdmitTRStream(ieee, addr, UP, TxRxSelect);
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if (*ppTS)
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return true;
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if (!bAddNewTs) {
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netdev_dbg(ieee->dev, "add new TS failed(tid:%d)\n", UP);
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return false;
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}
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pUnusedList = (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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pAddmitList = (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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Dir = ((TxRxSelect == TX_DIR) ? DIR_UP : DIR_DOWN);
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if (!list_empty(pUnusedList)) {
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(*ppTS) = list_entry(pUnusedList->next,
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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 =
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container_of(*ppTS,
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struct tx_ts_record,
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ts_common_info);
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ResetTxTsEntry(tmp);
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} else {
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struct rx_ts_record *ts =
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container_of(*ppTS,
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struct rx_ts_record,
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ts_common_info);
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ResetRxTsEntry(ts);
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}
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netdev_dbg(ieee->dev,
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"to init current TS, UP:%d, Dir:%d, addr: %pM ppTs=%p\n",
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UP, Dir, addr, *ppTS);
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ts_info->ts_id = UP;
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ts_info->ucDirection = Dir;
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MakeTSEntry(*ppTS, addr, &tspec);
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list_add_tail(&((*ppTS)->list), pAddmitList);
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return true;
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}
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netdev_warn(ieee->dev,
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"There is not enough dir=%d(0=up down=1) TS record to be used!",
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Dir);
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return false;
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}
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static void RemoveTsEntry(struct rtllib_device *ieee,
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struct ts_common_info *pTs, enum tr_select TxRxSelect)
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{
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rtllib_ts_init_del_ba(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 *ts = (struct rx_ts_record *)pTs;
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if (timer_pending(&ts->rx_pkt_pending_timer))
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del_timer_sync(&ts->rx_pkt_pending_timer);
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while (!list_empty(&ts->rx_pending_pkt_list)) {
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pRxReorderEntry = (struct rx_reorder_entry *)
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list_entry(ts->rx_pending_pkt_list.prev,
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struct rx_reorder_entry, list);
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netdev_dbg(ieee->dev, "%s(): Delete SeqNum %d!\n",
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__func__, pRxReorderEntry->SeqNum);
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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 rtllib_rxb *prxb = pRxReorderEntry->prxb;
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if (unlikely(!prxb))
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return;
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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,
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&ieee->RxReorder_Unused_List);
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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 rtllib_device *ieee, u8 *addr)
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{
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struct ts_common_info *ts, *pTmpTS;
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netdev_info(ieee->dev, "===========>%s, %pM\n", __func__, addr);
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list_for_each_entry_safe(ts, pTmpTS, &ieee->Tx_TS_Pending_List, list) {
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if (memcmp(ts->addr, addr, 6) == 0) {
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RemoveTsEntry(ieee, ts, TX_DIR);
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list_del_init(&ts->list);
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list_add_tail(&ts->list, &ieee->Tx_TS_Unused_List);
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}
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}
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list_for_each_entry_safe(ts, pTmpTS, &ieee->Tx_TS_Admit_List, list) {
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if (memcmp(ts->addr, addr, 6) == 0) {
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netdev_info(ieee->dev,
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"====>remove Tx_TS_admin_list\n");
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RemoveTsEntry(ieee, ts, TX_DIR);
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list_del_init(&ts->list);
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list_add_tail(&ts->list, &ieee->Tx_TS_Unused_List);
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}
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}
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list_for_each_entry_safe(ts, pTmpTS, &ieee->Rx_TS_Pending_List, list) {
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if (memcmp(ts->addr, addr, 6) == 0) {
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RemoveTsEntry(ieee, ts, RX_DIR);
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list_del_init(&ts->list);
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list_add_tail(&ts->list, &ieee->Rx_TS_Unused_List);
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}
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}
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list_for_each_entry_safe(ts, pTmpTS, &ieee->Rx_TS_Admit_List, list) {
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if (memcmp(ts->addr, addr, 6) == 0) {
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RemoveTsEntry(ieee, ts, RX_DIR);
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list_del_init(&ts->list);
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list_add_tail(&ts->list, &ieee->Rx_TS_Unused_List);
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}
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}
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}
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EXPORT_SYMBOL(RemovePeerTS);
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void RemoveAllTS(struct rtllib_device *ieee)
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{
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struct ts_common_info *ts, *pTmpTS;
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list_for_each_entry_safe(ts, pTmpTS, &ieee->Tx_TS_Pending_List, list) {
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RemoveTsEntry(ieee, ts, TX_DIR);
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list_del_init(&ts->list);
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list_add_tail(&ts->list, &ieee->Tx_TS_Unused_List);
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}
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list_for_each_entry_safe(ts, pTmpTS, &ieee->Tx_TS_Admit_List, list) {
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RemoveTsEntry(ieee, ts, TX_DIR);
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list_del_init(&ts->list);
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list_add_tail(&ts->list, &ieee->Tx_TS_Unused_List);
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}
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list_for_each_entry_safe(ts, pTmpTS, &ieee->Rx_TS_Pending_List, list) {
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RemoveTsEntry(ieee, ts, RX_DIR);
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list_del_init(&ts->list);
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list_add_tail(&ts->list, &ieee->Rx_TS_Unused_List);
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}
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list_for_each_entry_safe(ts, pTmpTS, &ieee->Rx_TS_Admit_List, list) {
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RemoveTsEntry(ieee, ts, RX_DIR);
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list_del_init(&ts->list);
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list_add_tail(&ts->list, &ieee->Rx_TS_Unused_List);
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}
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}
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void TsStartAddBaProcess(struct rtllib_device *ieee, struct tx_ts_record *pTxTS)
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{
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if (pTxTS->add_ba_req_in_progress == false) {
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pTxTS->add_ba_req_in_progress = true;
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if (pTxTS->add_ba_req_delayed) {
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netdev_dbg(ieee->dev, "Start ADDBA after 60 sec!!\n");
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mod_timer(&pTxTS->ts_add_ba_timer, jiffies +
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msecs_to_jiffies(TS_ADDBA_DELAY));
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} else {
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netdev_dbg(ieee->dev, "Immediately Start ADDBA\n");
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mod_timer(&pTxTS->ts_add_ba_timer, jiffies + 10);
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}
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} else {
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netdev_dbg(ieee->dev, "BA timer is already added\n");
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}
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}
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