- 根目录:
- drivers
- staging
- rtl8192e
- rtl819x_BAProc.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 <asm/byteorder.h>
#include <asm/unaligned.h>
#include <linux/etherdevice.h>
#include "rtllib.h"
#include "rtl819x_BA.h"
static void ActivateBAEntry(struct rtllib_device *ieee, struct ba_record *pBA,
u16 Time)
{
pBA->bValid = true;
if (Time != 0)
mod_timer(&pBA->Timer, jiffies + msecs_to_jiffies(Time));
}
static void DeActivateBAEntry(struct rtllib_device *ieee, struct ba_record *pBA)
{
pBA->bValid = false;
del_timer_sync(&pBA->Timer);
}
static u8 TxTsDeleteBA(struct rtllib_device *ieee, struct tx_ts_record *pTxTs)
{
struct ba_record *pAdmittedBa = &pTxTs->TxAdmittedBARecord;
struct ba_record *pPendingBa = &pTxTs->TxPendingBARecord;
u8 bSendDELBA = false;
if (pPendingBa->bValid) {
DeActivateBAEntry(ieee, pPendingBa);
bSendDELBA = true;
}
if (pAdmittedBa->bValid) {
DeActivateBAEntry(ieee, pAdmittedBa);
bSendDELBA = true;
}
return bSendDELBA;
}
static u8 RxTsDeleteBA(struct rtllib_device *ieee, struct rx_ts_record *pRxTs)
{
struct ba_record *pBa = &pRxTs->RxAdmittedBARecord;
u8 bSendDELBA = false;
if (pBa->bValid) {
DeActivateBAEntry(ieee, pBa);
bSendDELBA = true;
}
return bSendDELBA;
}
void ResetBaEntry(struct ba_record *pBA)
{
pBA->bValid = false;
pBA->BaParamSet.shortData = 0;
pBA->BaTimeoutValue = 0;
pBA->DialogToken = 0;
pBA->BaStartSeqCtrl.ShortData = 0;
}
static struct sk_buff *rtllib_ADDBA(struct rtllib_device *ieee, u8 *Dst,
struct ba_record *pBA,
u16 StatusCode, u8 type)
{
struct sk_buff *skb = NULL;
struct rtllib_hdr_3addr *BAReq = NULL;
u8 *tag = NULL;
u16 len = ieee->tx_headroom + 9;
netdev_dbg(ieee->dev, "%s(): frame(%d) sentd to: %pM, ieee->dev:%p\n",
__func__, type, Dst, ieee->dev);
if (pBA == NULL) {
netdev_warn(ieee->dev, "pBA is NULL\n");
return NULL;
}
skb = dev_alloc_skb(len + sizeof(struct rtllib_hdr_3addr));
if (skb == NULL)
return NULL;
memset(skb->data, 0, sizeof(struct rtllib_hdr_3addr));
skb_reserve(skb, ieee->tx_headroom);
BAReq = (struct rtllib_hdr_3addr *)skb_put(skb,
sizeof(struct rtllib_hdr_3addr));
ether_addr_copy(BAReq->addr1, Dst);
ether_addr_copy(BAReq->addr2, ieee->dev->dev_addr);
ether_addr_copy(BAReq->addr3, ieee->current_network.bssid);
BAReq->frame_ctl = cpu_to_le16(RTLLIB_STYPE_MANAGE_ACT);
tag = (u8 *)skb_put(skb, 9);
*tag++ = ACT_CAT_BA;
*tag++ = type;
*tag++ = pBA->DialogToken;
if (type == ACT_ADDBARSP) {
RT_TRACE(COMP_DBG, "====>to send ADDBARSP\n");
put_unaligned_le16(StatusCode, tag);
tag += 2;
}
put_unaligned_le16(pBA->BaParamSet.shortData, tag);
tag += 2;
put_unaligned_le16(pBA->BaTimeoutValue, tag);
tag += 2;
if (type == ACT_ADDBAREQ) {
memcpy(tag, (u8 *)&(pBA->BaStartSeqCtrl), 2);
tag += 2;
}
#ifdef VERBOSE_DEBUG
print_hex_dump_bytes("rtllib_ADDBA(): ", DUMP_PREFIX_NONE, skb->data,
skb->len);
#endif
return skb;
}
static struct sk_buff *rtllib_DELBA(struct rtllib_device *ieee, u8 *dst,
struct ba_record *pBA,
enum tr_select TxRxSelect, u16 ReasonCode)
{
union delba_param_set DelbaParamSet;
struct sk_buff *skb = NULL;
struct rtllib_hdr_3addr *Delba = NULL;
u8 *tag = NULL;
u16 len = 6 + ieee->tx_headroom;
if (net_ratelimit())
netdev_dbg(ieee->dev, "%s(): ReasonCode(%d) sentd to: %pM\n",
__func__, ReasonCode, dst);
memset(&DelbaParamSet, 0, 2);
DelbaParamSet.field.Initiator = (TxRxSelect == TX_DIR) ? 1 : 0;
DelbaParamSet.field.TID = pBA->BaParamSet.field.TID;
skb = dev_alloc_skb(len + sizeof(struct rtllib_hdr_3addr));
if (skb == NULL)
return NULL;
skb_reserve(skb, ieee->tx_headroom);
Delba = (struct rtllib_hdr_3addr *) skb_put(skb,
sizeof(struct rtllib_hdr_3addr));
ether_addr_copy(Delba->addr1, dst);
ether_addr_copy(Delba->addr2, ieee->dev->dev_addr);
ether_addr_copy(Delba->addr3, ieee->current_network.bssid);
Delba->frame_ctl = cpu_to_le16(RTLLIB_STYPE_MANAGE_ACT);
tag = (u8 *)skb_put(skb, 6);
*tag++ = ACT_CAT_BA;
*tag++ = ACT_DELBA;
put_unaligned_le16(DelbaParamSet.shortData, tag);
tag += 2;
put_unaligned_le16(ReasonCode, tag);
tag += 2;
#ifdef VERBOSE_DEBUG
print_hex_dump_bytes("rtllib_DELBA(): ", DUMP_PREFIX_NONE, skb->data,
skb->len);
#endif
return skb;
}
static void rtllib_send_ADDBAReq(struct rtllib_device *ieee, u8 *dst,
struct ba_record *pBA)
{
struct sk_buff *skb = NULL;
skb = rtllib_ADDBA(ieee, dst, pBA, 0, ACT_ADDBAREQ);
if (skb) {
RT_TRACE(COMP_DBG, "====>to send ADDBAREQ!!!!!\n");
softmac_mgmt_xmit(skb, ieee);
} else {
netdev_dbg(ieee->dev, "Failed to generate ADDBAReq packet.\n");
}
}
static void rtllib_send_ADDBARsp(struct rtllib_device *ieee, u8 *dst,
struct ba_record *pBA, u16 StatusCode)
{
struct sk_buff *skb = NULL;
skb = rtllib_ADDBA(ieee, dst, pBA, StatusCode, ACT_ADDBARSP);
if (skb)
softmac_mgmt_xmit(skb, ieee);
else
netdev_dbg(ieee->dev, "Failed to generate ADDBARsp packet.\n");
}
static void rtllib_send_DELBA(struct rtllib_device *ieee, u8 *dst,
struct ba_record *pBA, enum tr_select TxRxSelect,
u16 ReasonCode)
{
struct sk_buff *skb = NULL;
skb = rtllib_DELBA(ieee, dst, pBA, TxRxSelect, ReasonCode);
if (skb)
softmac_mgmt_xmit(skb, ieee);
else
netdev_dbg(ieee->dev, "Failed to generate DELBA packet.\n");
}
int rtllib_rx_ADDBAReq(struct rtllib_device *ieee, struct sk_buff *skb)
{
struct rtllib_hdr_3addr *req = NULL;
u16 rc = 0;
u8 *dst = NULL, *pDialogToken = NULL, *tag = NULL;
struct ba_record *pBA = NULL;
union ba_param_set *pBaParamSet = NULL;
u16 *pBaTimeoutVal = NULL;
union sequence_control *pBaStartSeqCtrl = NULL;
struct rx_ts_record *pTS = NULL;
if (skb->len < sizeof(struct rtllib_hdr_3addr) + 9) {
netdev_warn(ieee->dev, "Invalid skb len in BAREQ(%d / %d)\n",
(int)skb->len,
(int)(sizeof(struct rtllib_hdr_3addr) + 9));
return -1;
}
#ifdef VERBOSE_DEBUG
print_hex_dump_bytes("rtllib_rx_ADDBAReq(): ", DUMP_PREFIX_NONE,
skb->data, skb->len);
#endif
req = (struct rtllib_hdr_3addr *) skb->data;
tag = (u8 *)req;
dst = (u8 *)(&req->addr2[0]);
tag += sizeof(struct rtllib_hdr_3addr);
pDialogToken = tag + 2;
pBaParamSet = (union ba_param_set *)(tag + 3);
pBaTimeoutVal = (u16 *)(tag + 5);
pBaStartSeqCtrl = (union sequence_control *)(req + 7);
RT_TRACE(COMP_DBG, "====>rx ADDBAREQ from : %pM\n", dst);
if (ieee->current_network.qos_data.active == 0 ||
(ieee->pHTInfo->bCurrentHTSupport == false) ||
(ieee->pHTInfo->IOTAction & HT_IOT_ACT_REJECT_ADDBA_REQ)) {
rc = ADDBA_STATUS_REFUSED;
netdev_warn(ieee->dev,
"Failed to reply on ADDBA_REQ as some capability is not ready(%d, %d)\n",
ieee->current_network.qos_data.active,
ieee->pHTInfo->bCurrentHTSupport);
goto OnADDBAReq_Fail;
}
if (!GetTs(ieee, (struct ts_common_info **)(&pTS), dst,
(u8)(pBaParamSet->field.TID), RX_DIR, true)) {
rc = ADDBA_STATUS_REFUSED;
netdev_warn(ieee->dev, "%s(): can't get TS\n", __func__);
goto OnADDBAReq_Fail;
}
pBA = &pTS->RxAdmittedBARecord;
if (pBaParamSet->field.BAPolicy == BA_POLICY_DELAYED) {
rc = ADDBA_STATUS_INVALID_PARAM;
netdev_warn(ieee->dev, "%s(): BA Policy is not correct\n",
__func__);
goto OnADDBAReq_Fail;
}
rtllib_FlushRxTsPendingPkts(ieee, pTS);
DeActivateBAEntry(ieee, pBA);
pBA->DialogToken = *pDialogToken;
pBA->BaParamSet = *pBaParamSet;
pBA->BaTimeoutValue = *pBaTimeoutVal;
pBA->BaStartSeqCtrl = *pBaStartSeqCtrl;
if (ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev) ||
(ieee->pHTInfo->IOTAction & HT_IOT_ACT_ALLOW_PEER_AGG_ONE_PKT))
pBA->BaParamSet.field.BufferSize = 1;
else
pBA->BaParamSet.field.BufferSize = 32;
ActivateBAEntry(ieee, pBA, 0);
rtllib_send_ADDBARsp(ieee, dst, pBA, ADDBA_STATUS_SUCCESS);
return 0;
OnADDBAReq_Fail:
{
struct ba_record BA;
BA.BaParamSet = *pBaParamSet;
BA.BaTimeoutValue = *pBaTimeoutVal;
BA.DialogToken = *pDialogToken;
BA.BaParamSet.field.BAPolicy = BA_POLICY_IMMEDIATE;
rtllib_send_ADDBARsp(ieee, dst, &BA, rc);
return 0;
}
}
int rtllib_rx_ADDBARsp(struct rtllib_device *ieee, struct sk_buff *skb)
{
struct rtllib_hdr_3addr *rsp = NULL;
struct ba_record *pPendingBA, *pAdmittedBA;
struct tx_ts_record *pTS = NULL;
u8 *dst = NULL, *pDialogToken = NULL, *tag = NULL;
u16 *pStatusCode = NULL, *pBaTimeoutVal = NULL;
union ba_param_set *pBaParamSet = NULL;
u16 ReasonCode;
if (skb->len < sizeof(struct rtllib_hdr_3addr) + 9) {
netdev_warn(ieee->dev, "Invalid skb len in BARSP(%d / %d)\n",
(int)skb->len,
(int)(sizeof(struct rtllib_hdr_3addr) + 9));
return -1;
}
rsp = (struct rtllib_hdr_3addr *)skb->data;
tag = (u8 *)rsp;
dst = (u8 *)(&rsp->addr2[0]);
tag += sizeof(struct rtllib_hdr_3addr);
pDialogToken = tag + 2;
pStatusCode = (u16 *)(tag + 3);
pBaParamSet = (union ba_param_set *)(tag + 5);
pBaTimeoutVal = (u16 *)(tag + 7);
RT_TRACE(COMP_DBG, "====>rx ADDBARSP from : %pM\n", dst);
if (ieee->current_network.qos_data.active == 0 ||
ieee->pHTInfo->bCurrentHTSupport == false ||
ieee->pHTInfo->bCurrentAMPDUEnable == false) {
netdev_warn(ieee->dev,
"reject to ADDBA_RSP as some capability is not ready(%d, %d, %d)\n",
ieee->current_network.qos_data.active,
ieee->pHTInfo->bCurrentHTSupport,
ieee->pHTInfo->bCurrentAMPDUEnable);
ReasonCode = DELBA_REASON_UNKNOWN_BA;
goto OnADDBARsp_Reject;
}
if (!GetTs(ieee, (struct ts_common_info **)(&pTS), dst,
(u8)(pBaParamSet->field.TID), TX_DIR, false)) {
netdev_warn(ieee->dev, "%s(): can't get TS\n", __func__);
ReasonCode = DELBA_REASON_UNKNOWN_BA;
goto OnADDBARsp_Reject;
}
pTS->bAddBaReqInProgress = false;
pPendingBA = &pTS->TxPendingBARecord;
pAdmittedBA = &pTS->TxAdmittedBARecord;
if (pAdmittedBA->bValid == true) {
netdev_dbg(ieee->dev, "%s(): ADDBA response already admitted\n",
__func__);
return -1;
} else if ((pPendingBA->bValid == false) ||
(*pDialogToken != pPendingBA->DialogToken)) {
netdev_warn(ieee->dev,
"%s(): ADDBA Rsp. BA invalid, DELBA!\n",
__func__);
ReasonCode = DELBA_REASON_UNKNOWN_BA;
goto OnADDBARsp_Reject;
} else {
netdev_dbg(ieee->dev,
"%s(): Recv ADDBA Rsp. BA is admitted! Status code:%X\n",
__func__, *pStatusCode);
DeActivateBAEntry(ieee, pPendingBA);
}
if (*pStatusCode == ADDBA_STATUS_SUCCESS) {
if (pBaParamSet->field.BAPolicy == BA_POLICY_DELAYED) {
pTS->bAddBaReqDelayed = true;
DeActivateBAEntry(ieee, pAdmittedBA);
ReasonCode = DELBA_REASON_END_BA;
goto OnADDBARsp_Reject;
}
pAdmittedBA->DialogToken = *pDialogToken;
pAdmittedBA->BaTimeoutValue = *pBaTimeoutVal;
pAdmittedBA->BaStartSeqCtrl = pPendingBA->BaStartSeqCtrl;
pAdmittedBA->BaParamSet = *pBaParamSet;
DeActivateBAEntry(ieee, pAdmittedBA);
ActivateBAEntry(ieee, pAdmittedBA, *pBaTimeoutVal);
} else {
pTS->bAddBaReqDelayed = true;
pTS->bDisable_AddBa = true;
ReasonCode = DELBA_REASON_END_BA;
goto OnADDBARsp_Reject;
}
return 0;
OnADDBARsp_Reject:
{
struct ba_record BA;
BA.BaParamSet = *pBaParamSet;
rtllib_send_DELBA(ieee, dst, &BA, TX_DIR, ReasonCode);
return 0;
}
}
int rtllib_rx_DELBA(struct rtllib_device *ieee, struct sk_buff *skb)
{
struct rtllib_hdr_3addr *delba = NULL;
union delba_param_set *pDelBaParamSet = NULL;
u8 *dst = NULL;
if (skb->len < sizeof(struct rtllib_hdr_3addr) + 6) {
netdev_warn(ieee->dev, "Invalid skb len in DELBA(%d / %d)\n",
(int)skb->len,
(int)(sizeof(struct rtllib_hdr_3addr) + 6));
return -1;
}
if (ieee->current_network.qos_data.active == 0 ||
ieee->pHTInfo->bCurrentHTSupport == false) {
netdev_warn(ieee->dev,
"received DELBA while QOS or HT is not supported(%d, %d)\n",
ieee->current_network. qos_data.active,
ieee->pHTInfo->bCurrentHTSupport);
return -1;
}
#ifdef VERBOSE_DEBUG
print_hex_dump_bytes("rtllib_rx_DELBA(): ", DUMP_PREFIX_NONE, skb->data,
skb->len);
#endif
delba = (struct rtllib_hdr_3addr *)skb->data;
dst = (u8 *)(&delba->addr2[0]);
pDelBaParamSet = (union delba_param_set *)&delba->payload[2];
if (pDelBaParamSet->field.Initiator == 1) {
struct rx_ts_record *pRxTs;
if (!GetTs(ieee, (struct ts_common_info **)&pRxTs, dst,
(u8)pDelBaParamSet->field.TID, RX_DIR, false)) {
netdev_warn(ieee->dev,
"%s(): can't get TS for RXTS. dst:%pM TID:%d\n",
__func__, dst,
(u8)pDelBaParamSet->field.TID);
return -1;
}
RxTsDeleteBA(ieee, pRxTs);
} else {
struct tx_ts_record *pTxTs;
if (!GetTs(ieee, (struct ts_common_info **)&pTxTs, dst,
(u8)pDelBaParamSet->field.TID, TX_DIR, false)) {
netdev_warn(ieee->dev, "%s(): can't get TS for TXTS\n",
__func__);
return -1;
}
pTxTs->bUsingBa = false;
pTxTs->bAddBaReqInProgress = false;
pTxTs->bAddBaReqDelayed = false;
del_timer_sync(&pTxTs->TsAddBaTimer);
TxTsDeleteBA(ieee, pTxTs);
}
return 0;
}
void TsInitAddBA(struct rtllib_device *ieee, struct tx_ts_record *pTS,
u8 Policy, u8 bOverwritePending)
{
struct ba_record *pBA = &pTS->TxPendingBARecord;
if (pBA->bValid == true && bOverwritePending == false)
return;
DeActivateBAEntry(ieee, pBA);
pBA->DialogToken++;
pBA->BaParamSet.field.AMSDU_Support = 0;
pBA->BaParamSet.field.BAPolicy = Policy;
pBA->BaParamSet.field.TID =
pTS->TsCommonInfo.TSpec.f.TSInfo.field.ucTSID;
pBA->BaParamSet.field.BufferSize = 32;
pBA->BaTimeoutValue = 0;
pBA->BaStartSeqCtrl.field.SeqNum = (pTS->TxCurSeq + 3) % 4096;
ActivateBAEntry(ieee, pBA, BA_SETUP_TIMEOUT);
rtllib_send_ADDBAReq(ieee, pTS->TsCommonInfo.Addr, pBA);
}
void TsInitDelBA(struct rtllib_device *ieee,
struct ts_common_info *pTsCommonInfo,
enum tr_select TxRxSelect)
{
if (TxRxSelect == TX_DIR) {
struct tx_ts_record *pTxTs =
(struct tx_ts_record *)pTsCommonInfo;
if (TxTsDeleteBA(ieee, pTxTs))
rtllib_send_DELBA(ieee, pTsCommonInfo->Addr,
(pTxTs->TxAdmittedBARecord.bValid) ?
(&pTxTs->TxAdmittedBARecord) :
(&pTxTs->TxPendingBARecord),
TxRxSelect, DELBA_REASON_END_BA);
} else if (TxRxSelect == RX_DIR) {
struct rx_ts_record *pRxTs =
(struct rx_ts_record *)pTsCommonInfo;
if (RxTsDeleteBA(ieee, pRxTs))
rtllib_send_DELBA(ieee, pTsCommonInfo->Addr,
&pRxTs->RxAdmittedBARecord,
TxRxSelect, DELBA_REASON_END_BA);
}
}
void BaSetupTimeOut(unsigned long data)
{
struct tx_ts_record *pTxTs = (struct tx_ts_record *)data;
pTxTs->bAddBaReqInProgress = false;
pTxTs->bAddBaReqDelayed = true;
pTxTs->TxPendingBARecord.bValid = false;
}
void TxBaInactTimeout(unsigned long data)
{
struct tx_ts_record *pTxTs = (struct tx_ts_record *)data;
struct rtllib_device *ieee = container_of(pTxTs, struct rtllib_device,
TxTsRecord[pTxTs->num]);
TxTsDeleteBA(ieee, pTxTs);
rtllib_send_DELBA(ieee, pTxTs->TsCommonInfo.Addr,
&pTxTs->TxAdmittedBARecord, TX_DIR,
DELBA_REASON_TIMEOUT);
}
void RxBaInactTimeout(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]);
RxTsDeleteBA(ieee, pRxTs);
rtllib_send_DELBA(ieee, pRxTs->TsCommonInfo.Addr,
&pRxTs->RxAdmittedBARecord, RX_DIR,
DELBA_REASON_TIMEOUT);
}