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