/**
* \fn RxQueue_CloseBaSession ()
* \brief Close BA session receiver and pass all packets in the TID queue to upper layer.
*
* \note
* \param hRxQueue - RxQueue handle.
* \param uFrameTid - TID session.
* \return None
* \sa
*/
void RxQueue_CloseBaSession(TI_HANDLE hRxQueue, TI_UINT8 uFrameTid)
{
TRxQueue *pRxQueue = (TRxQueue *)hRxQueue;
TI_UINT32 i;
/* Set the SA Tid pointer */
TRxQueueTidDataBase *pTidDataBase = &(pRxQueue->tRxQueueArraysMng.tSa1ArrayMng[uFrameTid]);
/* TID illegal value ? */
if (uFrameTid >= MAX_NUM_OF_802_1d_TAGS)
{
TRACE1(pRxQueue->hReport, REPORT_SEVERITY_ERROR , "RxQueue_CloseBaSession: BA event - DELBA frame with TID value too big, TID = %d\n", uFrameTid);
return;
}
if (pTidDataBase->aTidBaEstablished == TI_TRUE)
{
/* Clean BA session */
pTidDataBase->aTidBaEstablished = TI_FALSE;
/* Pass all valid entries at the array */
for (i = 0; (i < RX_QUEUE_ARRAY_SIZE) && (i < RX_QUEUE_WIN_SIZE); i++)
{
if (pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket != NULL)
{
RxQueue_PassPacket (pRxQueue,
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].tStatus,
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket);
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket = NULL;
pRxQueue->tPacketTimeout.aPacketsStored--;
}
pTidDataBase->aWinStartArrayInex ++;
/* aWinStartArrayInex % RX_QUEUE_ARRAY_SIZE */
pTidDataBase->aWinStartArrayInex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
}
/* If timer is started - stop it */
if (pRxQueue->tPacketTimeout.bPacketMiss)
{
tmr_StopTimer (pRxQueue->hTimer);
pRxQueue->tPacketTimeout.bPacketMiss = TI_FALSE;
}
}
}
/**
* \fn RxQueue_CloseBaSession ()
* \brief Close BA session receiver and pass all packets in the TID queue to upper layer.
*
* \note
* \param hRxQueue - RxQueue handle.
* \param uFrameTid - TID session.
* \return None
* \sa
*/
void RxQueue_CloseBaSession(TI_HANDLE hRxQueue, TI_UINT8 uFrameTid)
{
TRxQueue *pRxQueue = (TRxQueue *)hRxQueue;
TI_UINT32 i;
/* Set the SA Tid pointer */
TRxQueueTidDataBase *pTidDataBase = &(pRxQueue->tRxQueueArraysMng.tSa1ArrayMng[uFrameTid]);
/* TID illegal value ? */
if (uFrameTid >= MAX_NUM_OF_802_1d_TAGS) {
return;
}
if (pTidDataBase->aTidBaEstablished == TI_TRUE) {
/* Clean BA session */
pTidDataBase->aTidBaEstablished = TI_FALSE;
/* Pass all valid entries at the array */
for (i = 0; (i < RX_QUEUE_ARRAY_SIZE) && (i < RX_QUEUE_WIN_SIZE); i++) {
if (pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket != NULL) {
RxQueue_PassPacket (pRxQueue,
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].tStatus,
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket);
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket = NULL;
pTidDataBase->uStoredPackets--;
}
pTidDataBase->aWinStartArrayInex ++;
/* aWinStartArrayInex % RX_QUEUE_ARRAY_SIZE */
pTidDataBase->aWinStartArrayInex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
}
/* stop missing packet timer for this TID */
StopMissingPktTimer(pRxQueue, uFrameTid);
}
}
/**
* \fn RxQueue_ReceivePacket()
* \brief Main function of the RxQueue module.
* Responsible on reorder of the packets from the RxXfer to the RX module.
* Call from RxXfer in order to pass packet to uppers layers.
* In order to save disordered packets the module use array of structures per TID
* that each entry describe a packet. The array elements is sorted in the way that
* the winStart array index represent always the winStart packet and the lowest SN.
* Each increment index represent index at the BA window. Array index winEnd always
* represent winEnd packet. The indexes of winStart and winEnd handled in cyclic manner.
*
* SN range : 0 - 4095
* winStart range: 0 - 7 [0 - (RX_QUEUE_ARRAY_SIZE - 1)]
* winSize : Determined by the BA session. We limit it to maximum 8 [RX_QUEUE_ARRAY_SIZE]
* winEnd : = winStart + winSize - 1
*
* The function functionality devided to parts:
* Part 1:
* In case the module received a packet with SN equal to the expected SN:
* " pass it to upper layers
* " increases winStart and array index winStart
* " validate that all sequential queue packet are pass to the upper layers.
* Part 2:
* In case the module received a packet with SN between winStart to winEnd:
* " Save it sorted at the array at index: Save index = ((SN - winStart) + index array winStart) % arraySize.
* Part 3:
* In case the module received a packet with SN higher than winEnd:
* " Update winStart and WinEnd.
* " Save it sorted at the array in index winEnd index.
* " Pass to the upper layers all packets at the array indexes from old winStart index to the updated winStart index.
* Part 4 + 5:
* In case the module received a BA event packet: [Remember: This is an Rx module - We expect BAR and not BA (as well as ADDBE / DELBA]
* " Update winStart and WinEnd
* " Pass to the upper layers all packets at the array indexes from old winStart index to the updated winStart index.
* " Free BA event packet via pass it to upper layers with error status.
*
* \note
* \param hRxQueue - RxQueue handle.
* \param aStatus - RxXfer status that indicate if the upper layer should free the packet or use it.
* \param pBuffer - paket address of the packet [contains the RxIfDescriptor_t added by the FW].
* \return None
* \sa
*/
void RxQueue_ReceivePacket (TI_HANDLE hRxQueue, const void * pBuffer)
{
TRxQueue *pRxQueue = (TRxQueue *)hRxQueue;
RxIfDescriptor_t *pRxParams = (RxIfDescriptor_t*)pBuffer;
TI_UINT8 *pFrame = RX_BUF_DATA((TI_UINT8 *)pBuffer);
TI_STATUS tStatus = TI_OK;
dot11_header_t *pHdr = (dot11_header_t *)pFrame;
TI_UINT16 uQosControl;
COPY_WLAN_WORD(&uQosControl, &pHdr->qosControl); /* copy with endianess handling. */
/*
* Retrieving the TAG from the packet itself and not from the Rx Descriptor since by now it is not correct.
* If the packet is a QoS packet but the tag is not TAG_CLASS_QOS_DATA or TAG_CLASS_AMSDU - force TAG_CLASS_QOS_DATA or TAG_CLASS_AMSDU.
*
* Note: in the DR TAG_CLASS_EAPOL packet handled as TAG_CLASS_QOS_DATA
*/
if (IS_QOS_FRAME(*(TI_UINT16*)pFrame) && (pRxParams->packet_class_tag != TAG_CLASS_QOS_DATA) && (pRxParams->packet_class_tag != TAG_CLASS_AMSDU)) {
/* Get AMSDU bit from frame */
if ( uQosControl & DOT11_QOS_CONTROL_FIELD_A_MSDU_BITS) {
pRxParams->packet_class_tag = TAG_CLASS_AMSDU;
} else {
pRxParams->packet_class_tag = TAG_CLASS_QOS_DATA;
}
}
/*
* packet doesn't need reorder ?
*/
if ((pRxParams->packet_class_tag != TAG_CLASS_QOS_DATA) && (pRxParams->packet_class_tag != TAG_CLASS_BA_EVENT) && (pRxParams->packet_class_tag != TAG_CLASS_AMSDU)) {
RxQueue_PassPacket (pRxQueue, TI_OK, pBuffer);
return;
}
/*
* pRxParams->type == TAG_CLASS_QOS_DATA ?
*/
if ((pRxParams->packet_class_tag == TAG_CLASS_QOS_DATA) || (pRxParams->packet_class_tag == TAG_CLASS_AMSDU)) {
TI_UINT8 uFrameTid;
TI_UINT16 uFrameSn;
TI_UINT16 uSequenceControl;
TRxQueueTidDataBase *pTidDataBase;
/* Get TID from frame */
uFrameTid = uQosControl & DOT11_QOS_CONTROL_FIELD_TID_BITS;
/* TID illegal value ? */
if (uFrameTid >= MAX_NUM_OF_802_1d_TAGS) {
RxQueue_PassPacket (pRxQueue, TI_NOK, pBuffer);
return;
}
/* Set the SA Tid pointer */
pTidDataBase = &(pRxQueue->tRxQueueArraysMng.tSa1ArrayMng[uFrameTid]);
/* TID legal value */
/* Packet TID BA session not established ? */
if (pTidDataBase->aTidBaEstablished != TI_TRUE) {
RxQueue_PassPacket (pRxQueue, TI_OK, pBuffer);
return;
}
/* If we got here - Packet TID BA established */
/* Get Sequence Number from frame */
COPY_WLAN_WORD(&uSequenceControl, &pHdr->seqCtrl); /* copy with endianess handling. */
uFrameSn = (uSequenceControl & DOT11_SC_SEQ_NUM_MASK) >> 4;
/*
* Note:
* The FW never sends packet, in establish TID BA, with SN less than ESN !!!
*/
/* Part 1 - Received Frame Sequence Number is the expected one ? */
if (uFrameSn == pTidDataBase->aTidExpectedSn) {
/*
If the expected SN received and timer was running - Stop the timer.
If we wait for more than one packet we should not stop the timer - This is why we are checking after the while loop, if we have
more packets stored, and if we have, we start the timer again.
*/
if (pTidDataBase->uMissingPktTimeStamp != 0xffffffff) {
StopMissingPktTimer(pRxQueue, uFrameTid);
}
/* Pass the packet */
RxQueue_PassPacket (pRxQueue, TI_OK, pBuffer);
/* Increase expected SN to the next */
pTidDataBase->aTidExpectedSn++;
pTidDataBase->aTidExpectedSn &= 0xfff; /* SN is 12 bits long */
/* Increase the ArrayInex to the next */
pTidDataBase->aWinStartArrayInex++;
/* aWinStartArrayInex % RX_QUEUE_ARRAY_SIZE */
pTidDataBase->aWinStartArrayInex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
/* Pass all saved queue consecutive packets with SN higher than the expected one */
while (pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket != NULL) {
RxQueue_PassPacket (pRxQueue,
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].tStatus,
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket);
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket = NULL;
pTidDataBase->aWinStartArrayInex++;
/* aWinStartArrayInex % RX_QUEUE_ARRAY_SIZE */
pTidDataBase->aWinStartArrayInex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
pTidDataBase->aTidExpectedSn++;
pTidDataBase->aTidExpectedSn &= 0xfff; /* SN is 12 bits long */
/* Decrease the packets in queue */
pTidDataBase->uStoredPackets--;
}
/* aTidExpectedSn % 0xfff in order to tack care of wrap around */
pTidDataBase->aTidExpectedSn &= 0xfff;
/* If there are still packets stored in the queue - start timer */
if (pTidDataBase->uStoredPackets) {
StartMissingPktTimer(pRxQueue, uFrameTid);
}
return;
}
/* Frame Sequence Number is lower than Expected sequence number (ISN) ? */
if (! BA_SESSION_IS_A_BIGGER_THAN_B (uFrameSn, pTidDataBase->aTidExpectedSn)) {
/* WLAN_OS_REPORT(("%s: ERROR - SN=%u is less than ESN=%u\n", __FUNCTION__, uFrameSn, pTidDataBase->aTidExpectedSn)); */
RxQueue_PassPacket (pRxQueue, tStatus, pBuffer);
return;
}
/* Part 2 - Frame Sequence Number between winStart and winEnd ? */
if ((BA_SESSION_IS_A_BIGGER_THAN_B (uFrameSn, pTidDataBase->aTidExpectedSn)) &&
/* mean: uFrameSn <= pTidDataBase->aTidExpectedSn + pTidDataBase->aTidWinSize) */
( ! BA_SESSION_IS_A_BIGGER_THAN_B (uFrameSn,(pTidDataBase->aTidExpectedSn + pTidDataBase->aTidWinSize - 1)))) {
TI_UINT16 uSaveIndex = pTidDataBase->aWinStartArrayInex + (TI_UINT16)((uFrameSn + SEQ_NUM_WRAP - pTidDataBase->aTidExpectedSn) & SEQ_NUM_MASK);
/* uSaveIndex % RX_QUEUE_ARRAY_SIZE */
uSaveIndex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
/* Before storing packet in queue, make sure the place in the queue is vacant */
if (pTidDataBase->aPaketsQueue[uSaveIndex].pPacket == NULL) {
/* Store the packet in the queue */
pTidDataBase->aPaketsQueue[uSaveIndex].tStatus = tStatus;
pTidDataBase->aPaketsQueue[uSaveIndex].pPacket = (void *)pBuffer;
pTidDataBase->aPaketsQueue[uSaveIndex].uFrameSn = uFrameSn;
pTidDataBase->uStoredPackets++;
/* Start Timer */
StartMissingPktTimer(pRxQueue, uFrameTid);
} else {
RxQueue_PassPacket (pRxQueue, TI_NOK, pBuffer);
return;
}
return;
}
/*
Part 3 - Frame Sequence Number higher than winEnd ?
*/
if ( BA_SESSION_IS_A_BIGGER_THAN_B (uFrameSn, (pTidDataBase->aTidExpectedSn + pTidDataBase->aTidWinSize - 1)) ) {
TI_UINT32 i;
TI_UINT16 uNewWinStartSn = (uFrameSn + SEQ_NUM_WRAP - pTidDataBase->aTidWinSize + 1) & SEQ_NUM_MASK;
TI_UINT16 uSaveIndex;
/* stop timer */
if (pTidDataBase->uMissingPktTimeStamp != 0xffffffff) {
StopMissingPktTimer(pRxQueue, uFrameTid);
}
/* Increase the ArrayInex to the next */
pTidDataBase->aWinStartArrayInex++;
/* aWinStartArrayInex % RX_QUEUE_ARRAY_SIZE */
pTidDataBase->aWinStartArrayInex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
/* Update the Expected SN since the current one is lost */
pTidDataBase->aTidExpectedSn++;
pTidDataBase->aTidExpectedSn &= 0xFFF;
/* Pass all saved queue packets with SN lower than the new win start */
for (i = 0;
BA_SESSION_IS_A_BIGGER_THAN_B(uNewWinStartSn,pTidDataBase->aTidExpectedSn) &&
(i < RX_QUEUE_ARRAY_SIZE) &&
(i < pTidDataBase->aTidWinSize);
i++) {
if (pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket != NULL) {
RxQueue_PassPacket (pRxQueue,
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].tStatus,
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket);
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket = NULL;
pTidDataBase->uStoredPackets--;
}
pTidDataBase->aWinStartArrayInex++;
/* aWinStartArrayInex % RX_QUEUE_ARRAY_SIZE */
pTidDataBase->aWinStartArrayInex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
pTidDataBase->aTidExpectedSn++;
pTidDataBase->aTidExpectedSn &= 0xFFF;
}
/* Calculate the new Expected SN */
if (i == pTidDataBase->aTidWinSize) {
pTidDataBase->aTidExpectedSn = uNewWinStartSn;
} else {
/* In case the uWinStartDelta lower than aTidWinSize - check if there are packets stored in Array */
while (pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket != NULL) {
RxQueue_PassPacket ( pRxQueue,
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].tStatus,
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket
);
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket = NULL;
pTidDataBase->aWinStartArrayInex++;
/* aWinStartArrayInex % RX_QUEUE_ARRAY_SIZE */
pTidDataBase->aWinStartArrayInex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
pTidDataBase->aTidExpectedSn++;
pTidDataBase->aTidExpectedSn &= 0xFFF;
pTidDataBase->uStoredPackets--;
}
}
if (pTidDataBase->aTidExpectedSn == uFrameSn) {
/* pass the packet */
RxQueue_PassPacket (pRxQueue, tStatus, pBuffer);
pTidDataBase->aTidExpectedSn++;
pTidDataBase->aTidExpectedSn &= 0xfff;
} else {
uSaveIndex = pTidDataBase->aWinStartArrayInex + (TI_UINT16)((uFrameSn + SEQ_NUM_WRAP - pTidDataBase->aTidExpectedSn) & SEQ_NUM_MASK);
/* uSaveIndex % RX_QUEUE_ARRAY_SIZE */
uSaveIndex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
/* Save the packet in the last entry of the queue */
pTidDataBase->aPaketsQueue[uSaveIndex].tStatus = tStatus;
pTidDataBase->aPaketsQueue[uSaveIndex].pPacket = (void *)pBuffer;
pTidDataBase->aPaketsQueue[uSaveIndex].pPacket = (void *)pBuffer;
pTidDataBase->uStoredPackets++;
}
/* aTidExpectedSn % 0xfff in order to take care of wrap around */
pTidDataBase->aTidExpectedSn &= 0xfff;
/* If there are still packets stored in the queue - start timer */
if (pTidDataBase->uStoredPackets) {
StartMissingPktTimer(pRxQueue, uFrameTid);
}
return;
}
}
/**
* \fn RxQueue_ReceivePacket()
* \brief Main function of the RxQueue module.
* Responsible on reorder of the packets from the RxXfer to the RX module.
* Call from RxXfer in order to pass packet to uppers layers.
* In order to save disordered packets the module use array of structures per TID
* that each entry describe a packet. The array elements is sorted in the way that
* the winStart array index represent always the winStar packet and the lowest SN.
* Each increment index represent index at the BA window. Array index winEnd always
* represent winEnd packet. The indexes of winStart and winEnd handled in cyclic manner.
* The function functionality devided to parts:
* Part 1:
* in case the modulo receive packet with SN equal to winStart:
* " pass it to upper layers
* " increases winStart and array index winStart
* " validate that all sequential queue packet are pass to the upper layers.
* Part 2:
* in case the modulo receive packet that SN between winStart to winEnd:
* " Save it sorted at the array at index: Save index = ((SN - winStart) + index array winStart) % arraySize.
* Part 3:
* in case the modulo receive packet that SN higher then winEnd:
* " Update winStart and WinEnd.
* " Save it sorted at the array in index winEnd index.
* " Pass to the upper layers all packets at the array indexes from old winStart index to the updated winStart index.
* Part 4 + 5:
* in case the modulo receive BA event packet:
* " Update winStart and WinEnd
* " Pass to the upper layers all packets at the array indexes from old winStart index to the updated winStart index.
* " Free BA event packet via pass it to upper layers with error status.
*
* \note
* \param hRxQueue - RxQueue handle.
* \param aStatus - RxXfer status that indicate if the upper layer should free the packet or use it.
* \param pBuffer - paket address of the packet
* \return None
* \sa
*/
void RxQueue_ReceivePacket (TI_HANDLE hRxQueue, const void * pBuffer)
{
TRxQueue *pRxQueue = (TRxQueue *)hRxQueue;
RxIfDescriptor_t *pRxParams = (RxIfDescriptor_t*)pBuffer;
TI_UINT8 *pFrame = RX_BUF_DATA((TI_UINT8 *)pBuffer);
TI_STATUS tStatus = TI_OK;
dot11_header_t *pHdr = (dot11_header_t *)pFrame;
TI_UINT16 uQosControl;
COPY_WLAN_WORD(&uQosControl, &pHdr->qosControl); /* copy with endianess handling. */
/*
* Retrieving the TAG from the packet itself and not from the Rx Descriptor since by now it is not correct
* Note: in the DR TAG_CLASS_EAPOL packet handled as TAG_CLASS_QOS_DATA
*/
if (IS_QOS_FRAME(*(TI_UINT16*)pFrame) && (pRxParams->packet_class_tag != TAG_CLASS_QOS_DATA) && (pRxParams->packet_class_tag != TAG_CLASS_AMSDU))
{
TRACE1(pRxQueue->hReport, REPORT_SEVERITY_WARNING, "RxQueue_ReceivePacket: BAD CLASS TAG =0x%x from FW.\n", pRxParams->packet_class_tag);
/* Get AMSDU bit from frame */
if( uQosControl & DOT11_QOS_CONTROL_FIELD_A_MSDU_BITS)
{
pRxParams->packet_class_tag = TAG_CLASS_AMSDU;
}
else
{
pRxParams->packet_class_tag = TAG_CLASS_QOS_DATA;
}
}
/*
* packet doesn't need reorder ?
*/
if ((pRxParams->packet_class_tag != TAG_CLASS_QOS_DATA) && (pRxParams->packet_class_tag != TAG_CLASS_BA_EVENT) && (pRxParams->packet_class_tag != TAG_CLASS_AMSDU))
{
TRACE0(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION , "RxQueue_ReceivePacket: pass packet without reorder.\n");
RxQueue_PassPacket (pRxQueue, tStatus, pBuffer);
return;
}
/*
* pRxParams->type == TAG_CLASS_QOS_DATA ?
*/
if ((pRxParams->packet_class_tag == TAG_CLASS_QOS_DATA) || (pRxParams->packet_class_tag == TAG_CLASS_AMSDU))
{
TI_UINT8 uFrameTid;
TI_UINT16 uFrameSn;
TI_UINT16 uSequenceControl;
TRxQueueTidDataBase *pTidDataBase;
/* Get TID from frame */
uFrameTid = uQosControl & DOT11_QOS_CONTROL_FIELD_TID_BITS;
/* TID illegal value ? */
if (uFrameTid >= MAX_NUM_OF_802_1d_TAGS)
{
TRACE1(pRxQueue->hReport, REPORT_SEVERITY_ERROR, "RxQueue_ReceivePacket: TID value too big, TID = %d. packet discarded!\n",uFrameTid);
RxQueue_PassPacket (pRxQueue, TI_NOK, pBuffer);
return;
}
/*set the SA Tid pointer */
pTidDataBase = &(pRxQueue->tRxQueueArraysMng.tSa1ArrayMng[uFrameTid]);
/* TID legal value */
/* packet TID BA not established ? */
if (pTidDataBase->aTidBaEstablished != TI_TRUE)
{
TRACE0(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: pass packet without reorder.\n");
RxQueue_PassPacket (pRxQueue, tStatus, pBuffer);
return;
}
/* packet TID BA established */
/* Get Sequence Number from frame */
COPY_WLAN_WORD(&uSequenceControl, &pHdr->seqCtrl); /* copy with endianess handling. */
uFrameSn = (uSequenceControl & DOT11_SC_SEQ_NUM_MASK) >> 4;
/*
* note:
* the FW never send paket, in establish TID BA, that the SN less then ESN !!!
*/
/* frame Sequence Number is the expected one ? */
if (uFrameSn == pTidDataBase->aTidExpectedSn)
{
TRACE0(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: frame Sequence Number == expected one Sequence Number.\n");
/* pass the packet */
RxQueue_PassPacket (pRxQueue, tStatus, pBuffer);
pTidDataBase->aTidExpectedSn++;
pTidDataBase->aTidExpectedSn &= 0xfff;
/* increase the ArrayInex to the next */
pTidDataBase->aWinStartArrayInex++;
/* aWinStartArrayInex % RX_QUEUE_ARRAY_SIZE */
pTidDataBase->aWinStartArrayInex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
/* pass all saved queue packets with SN higher then the expected one */
while (pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket != NULL)
{
RxQueue_PassPacket (pRxQueue,
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].tStatus,
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket);
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket = NULL;
pTidDataBase->aWinStartArrayInex++;
/* aWinStartArrayInex % RX_QUEUE_ARRAY_SIZE */
pTidDataBase->aWinStartArrayInex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
pTidDataBase->aTidExpectedSn++;
pTidDataBase->aTidExpectedSn &= 0xfff;
}
return;
}
/* frame Sequence Number is lower then Expected sequence number (ISN) ? */
if (! BA_SESSION_IS_A_BIGGER_THAN_B (uFrameSn, pTidDataBase->aTidExpectedSn))
{
/* WLAN_OS_REPORT(("%s: ERROR - SN=%u is less than ESN=%u\n", __FUNCTION__, uFrameSn, pTidDataBase->aTidExpectedSn)); */
TRACE2(pRxQueue->hReport, REPORT_SEVERITY_ERROR,
"RxQueue_ReceivePacket: frame SN=%u is less than ESN=%u\n",uFrameSn,pTidDataBase->aTidExpectedSn);
RxQueue_PassPacket (pRxQueue, TI_NOK, pBuffer);
return;
}
/* frame Sequence Number between winStart and winEnd ? */
if ((BA_SESSION_IS_A_BIGGER_THAN_B (uFrameSn, pTidDataBase->aTidExpectedSn)) &&
/* mean: uFrameSn <= pTidDataBase->aTidExpectedSn + pTidDataBase->aTidWinSize) */
( ! BA_SESSION_IS_A_BIGGER_THAN_B (uFrameSn,(pTidDataBase->aTidExpectedSn + pTidDataBase->aTidWinSize - 1))))
{
TI_UINT16 uSaveInex = pTidDataBase->aWinStartArrayInex + (TI_UINT16)((uFrameSn + SEQ_NUM_WRAP - pTidDataBase->aTidExpectedSn) & SEQ_NUM_MASK);
/* uSaveInex % RX_QUEUE_ARRAY_SIZE */
uSaveInex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
if (pTidDataBase->aPaketsQueue[uSaveInex].pPacket == NULL)
{
/* save the packet in the queue */
pTidDataBase->aPaketsQueue[uSaveInex].tStatus = tStatus;
pTidDataBase->aPaketsQueue[uSaveInex].pPacket = (void *)pBuffer;
pTidDataBase->aPaketsQueue[uSaveInex].uFrameSn = uFrameSn;
}
else
{
TRACE1(pRxQueue->hReport, REPORT_SEVERITY_ERROR, "RxQueue_ReceivePacket: frame Sequence has allready saved. uFrameSn = %d\n",uFrameSn);
RxQueue_PassPacket (pRxQueue, TI_NOK, pBuffer);
return;
}
return;
}
/*
frame Sequence Number higher then winEnd ?
*/
if ( BA_SESSION_IS_A_BIGGER_THAN_B (uFrameSn, (pTidDataBase->aTidExpectedSn + pTidDataBase->aTidWinSize - 1)) )
{
TI_UINT32 i;
TI_UINT16 uNewWinStartSn = (uFrameSn + SEQ_NUM_WRAP - pTidDataBase->aTidWinSize + 1) & SEQ_NUM_MASK;
TI_UINT16 uSaveInex;
TRACE0(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: frame Sequence Number higher then winEnd.\n");
/* increase the ArrayInex to the next */
pTidDataBase->aWinStartArrayInex++;
/* aWinStartArrayInex % RX_QUEUE_ARRAY_SIZE */
pTidDataBase->aWinStartArrayInex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
/* update the Expected SN since the current one is lost */
pTidDataBase->aTidExpectedSn++;
pTidDataBase->aTidExpectedSn &= 0xFFF;
/* pass all saved queue packets with SN lower then the new win start */
for (i = 0;
BA_SESSION_IS_A_BIGGER_THAN_B(uNewWinStartSn,pTidDataBase->aTidExpectedSn) &&
(i < RX_QUEUE_ARRAY_SIZE) &&
(i < pTidDataBase->aTidWinSize);
i++)
{
if (pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket != NULL)
{
RxQueue_PassPacket (pRxQueue,
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].tStatus,
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket);
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket = NULL;
}
pTidDataBase->aWinStartArrayInex++;
/* aWinStartArrayInex % RX_QUEUE_ARRAY_SIZE */
pTidDataBase->aWinStartArrayInex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
pTidDataBase->aTidExpectedSn++;
pTidDataBase->aTidExpectedSn &= 0xFFF;
}
/* Calculate the new Expected SN */
if (i == pTidDataBase->aTidWinSize)
{
pTidDataBase->aTidExpectedSn = uNewWinStartSn;
}
else
{
/* Incase the uWinStartDelta lower than aTidWinSize check if ther are packets stored in Array */
while (pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket != NULL) {
RxQueue_PassPacket (pRxQueue,
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].tStatus,
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket);
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket = NULL;
pTidDataBase->aWinStartArrayInex++;
/* aWinStartArrayInex % RX_QUEUE_ARRAY_SIZE */
pTidDataBase->aWinStartArrayInex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
pTidDataBase->aTidExpectedSn++;
pTidDataBase->aTidExpectedSn &= 0xFFF;
}
}
if(pTidDataBase->aTidExpectedSn == uFrameSn)
{
/* pass the packet */
RxQueue_PassPacket (pRxQueue, tStatus, pBuffer);
pTidDataBase->aTidExpectedSn++;
pTidDataBase->aTidExpectedSn &= 0xfff;
}
else
{
uSaveInex = pTidDataBase->aWinStartArrayInex + (TI_UINT16)((uFrameSn + SEQ_NUM_WRAP - pTidDataBase->aTidExpectedSn) & SEQ_NUM_MASK);
/* uSaveInex % RX_QUEUE_ARRAY_SIZE */
uSaveInex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
/* save the packet in the last entry of the queue */
pTidDataBase->aPaketsQueue[uSaveInex].tStatus = tStatus;
pTidDataBase->aPaketsQueue[uSaveInex].pPacket = (void *)pBuffer;
pTidDataBase->aPaketsQueue[uSaveInex].pPacket = (void *)pBuffer;
}
return;
}
}
/**
* \fn RxQueue_ReceivePacket()
* \brief Main function of the RxQueue module.
* Responsible on reorder of the packets from the RxXfer to the RX module.
* Call from RxXfer in order to pass packet to uppers layers.
* In order to save disordered packets the module use array of structures per TID
* that each entry describe a packet. The array elements is sorted in the way that
* the winStart array index represent always the winStart packet and the lowest SN.
* Each increment index represent index at the BA window. Array index winEnd always
* represent winEnd packet. The indexes of winStart and winEnd handled in cyclic manner.
*
* SN range : 0 - 4095
* winStart range: 0 - 7 [0 - (RX_QUEUE_ARRAY_SIZE - 1)]
* winSize : Determined by the BA session. We limit it to maximum 8 [RX_QUEUE_ARRAY_SIZE]
* winEnd : = winStart + winSize - 1
*
* The function functionality devided to parts:
* Part 1:
* In case the module received a packet with SN equal to the expected SN:
* " pass it to upper layers
* " increases winStart and array index winStart
* " validate that all sequential queue packet are pass to the upper layers.
* Part 2:
* In case the module received a packet with SN between winStart to winEnd:
* " Save it sorted at the array at index: Save index = ((SN - winStart) + index array winStart) % arraySize.
* Part 3:
* In case the module received a packet with SN higher than winEnd:
* " Update winStart and WinEnd.
* " Save it sorted at the array in index winEnd index.
* " Pass to the upper layers all packets at the array indexes from old winStart index to the updated winStart index.
* Part 4 + 5:
* In case the module received a BA event packet: [Remember: This is an Rx module - We expect BAR and not BA (as well as ADDBE / DELBA]
* " Update winStart and WinEnd
* " Pass to the upper layers all packets at the array indexes from old winStart index to the updated winStart index.
* " Free BA event packet via pass it to upper layers with error status.
*
* \note
* \param hRxQueue - RxQueue handle.
* \param aStatus - RxXfer status that indicate if the upper layer should free the packet or use it.
* \param pBuffer - paket address of the packet [contains the RxIfDescriptor_t added by the FW].
* \return None
* \sa
*/
void RxQueue_ReceivePacket (TI_HANDLE hRxQueue, const void * pBuffer)
{
TRxQueue *pRxQueue = (TRxQueue *)hRxQueue;
RxIfDescriptor_t *pRxParams = (RxIfDescriptor_t*)pBuffer;
TI_UINT8 *pFrame = RX_BUF_DATA((TI_UINT8 *)pBuffer);
TI_STATUS tStatus = TI_OK;
dot11_header_t *pHdr = (dot11_header_t *)pFrame;
TI_UINT16 uQosControl;
COPY_WLAN_WORD(&uQosControl, &pHdr->qosControl); /* copy with endianess handling. */
TRACE2(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: packet_class_tag = 0x%x(%d)",pRxParams->packet_class_tag,pRxParams->packet_class_tag);
/*
* Retrieving the TAG from the packet itself and not from the Rx Descriptor since by now it is not correct.
* If the packet is a QoS packet but the tag is not TAG_CLASS_QOS_DATA or TAG_CLASS_AMSDU - force TAG_CLASS_QOS_DATA or TAG_CLASS_AMSDU.
*
* Note: in the DR TAG_CLASS_EAPOL packet handled as TAG_CLASS_QOS_DATA
*/
if (IS_QOS_FRAME(*(TI_UINT16*)pFrame) && (pRxParams->packet_class_tag != TAG_CLASS_QOS_DATA) && (pRxParams->packet_class_tag != TAG_CLASS_AMSDU))
{
TRACE1(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: BAD CLASS TAG =0x%x from FW.\n", pRxParams->packet_class_tag);
/* Get AMSDU bit from frame */
if ( uQosControl & DOT11_QOS_CONTROL_FIELD_A_MSDU_BITS)
{
pRxParams->packet_class_tag = TAG_CLASS_AMSDU;
}
else
{
pRxParams->packet_class_tag = TAG_CLASS_QOS_DATA;
}
}
/*
* packet doesn't need reorder ?
*/
if ((pRxParams->packet_class_tag != TAG_CLASS_QOS_DATA) && (pRxParams->packet_class_tag != TAG_CLASS_BA_EVENT) && (pRxParams->packet_class_tag != TAG_CLASS_AMSDU))
{
TRACE0(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION , "RxQueue_ReceivePacket: pass packet without reorder.\n");
RxQueue_PassPacket (pRxQueue, TI_OK, pBuffer);
return;
}
/*
* pRxParams->type == TAG_CLASS_QOS_DATA ?
*/
if ((pRxParams->packet_class_tag == TAG_CLASS_QOS_DATA) || (pRxParams->packet_class_tag == TAG_CLASS_AMSDU))
{
TI_UINT8 uFrameTid;
TI_UINT16 uFrameSn;
TI_UINT16 uSequenceControl;
TRxQueueTidDataBase *pTidDataBase;
/* Get TID from frame */
uFrameTid = uQosControl & DOT11_QOS_CONTROL_FIELD_TID_BITS;
TRACE0(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: QoS Packet received");
TRACE2(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: uFrameTid = 0x%x(%d)",uFrameTid,uFrameTid);
/* TID illegal value ? */
if (uFrameTid >= MAX_NUM_OF_802_1d_TAGS)
{
TRACE1(pRxQueue->hReport, REPORT_SEVERITY_ERROR, "RxQueue_ReceivePacket: TID value too big, TID = %d. packet discarded!\n",uFrameTid);
RxQueue_PassPacket (pRxQueue, TI_NOK, pBuffer);
return;
}
/* Set the SA Tid pointer */
pTidDataBase = &(pRxQueue->tRxQueueArraysMng.tSa1ArrayMng[uFrameTid]);
/* TID legal value */
/* Packet TID BA session not established ? */
if (pTidDataBase->aTidBaEstablished != TI_TRUE)
{
TRACE0(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: pass packet without reorder.\n");
RxQueue_PassPacket (pRxQueue, TI_OK, pBuffer);
return;
}
/* If we got here - Packet TID BA established */
/* Get Sequence Number from frame */
COPY_WLAN_WORD(&uSequenceControl, &pHdr->seqCtrl); /* copy with endianess handling. */
uFrameSn = (uSequenceControl & DOT11_SC_SEQ_NUM_MASK) >> 4;
TRACE2(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: uFrameSn = 0x%x(%d)", uFrameSn, uFrameSn);
TRACE2(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: aTidExpectedSn = 0x%x(%d)",pTidDataBase->aTidExpectedSn, pTidDataBase->aTidExpectedSn);
/*
* Note:
* The FW never sends packet, in establish TID BA, with SN less than ESN !!!
*/
/* Part 1 - Received Frame Sequence Number is the expected one ? */
if (uFrameSn == pTidDataBase->aTidExpectedSn)
{
TRACE0(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: frame Sequence Number == expected one Sequence Number.\n");
/*
If the expected SN received and timer was running - Stop the timer.
If we wait for more than one packet we should not stop the timer - This is why we are checking after the while loop, if we have
more packets stored, and if we have, we start the timer again.
*/
if (pRxQueue->tPacketTimeout.bPacketMiss)
{
tmr_StopTimer (pRxQueue->hTimer);
pRxQueue->tPacketTimeout.bPacketMiss = TI_FALSE;
}
/* Pass the packet */
RxQueue_PassPacket (pRxQueue, TI_OK, pBuffer);
/* Increase expected SN to the next */
pTidDataBase->aTidExpectedSn++;
pTidDataBase->aTidExpectedSn &= 0xfff; /* SN is 12 bits long */
/* Increase the ArrayInex to the next */
pTidDataBase->aWinStartArrayInex++;
/* aWinStartArrayInex % RX_QUEUE_ARRAY_SIZE */
pTidDataBase->aWinStartArrayInex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
/* Pass all saved queue consecutive packets with SN higher than the expected one */
while (pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket != NULL)
{
TRACE0(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: Pass all saved queue packets with SN higher than the expected one that was just received.");
TRACE2(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: aTidExpectedSn = 0x%x(%d)", pTidDataBase->aTidExpectedSn, pTidDataBase->aTidExpectedSn);
TRACE2(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: aWinStartArrayInex = 0x%x(%d)", pTidDataBase->aWinStartArrayInex, pTidDataBase->aWinStartArrayInex);
RxQueue_PassPacket (pRxQueue,
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].tStatus,
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket);
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket = NULL;
pTidDataBase->aWinStartArrayInex++;
/* aWinStartArrayInex % RX_QUEUE_ARRAY_SIZE */
pTidDataBase->aWinStartArrayInex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
pTidDataBase->aTidExpectedSn++;
pTidDataBase->aTidExpectedSn &= 0xfff; /* SN is 12 bits long */
/* Decrease the packets in queue */
pRxQueue->tPacketTimeout.aPacketsStored--;
}
/* aTidExpectedSn % 0xfff in order to tack care of wrap around */
pTidDataBase->aTidExpectedSn &= 0xfff;
/* If there are still packets stored in the queue - start timer */
if (pRxQueue->tPacketTimeout.aPacketsStored)
{
tmr_StartTimer (pRxQueue->hTimer, RxQueue_PacketTimeOut, pRxQueue, BA_SESSION_TIME_TO_SLEEP, TI_FALSE);
pRxQueue->tPacketTimeout.bPacketMiss = TI_TRUE;
pRxQueue->tPacketTimeout.aFrameTid = uFrameTid;
}
return;
}
/* Frame Sequence Number is lower than Expected sequence number (ISN) ? */
if (! BA_SESSION_IS_A_BIGGER_THAN_B (uFrameSn, pTidDataBase->aTidExpectedSn))
{
/* WLAN_OS_REPORT(("%s: ERROR - SN=%u is less than ESN=%u\n", __FUNCTION__, uFrameSn, pTidDataBase->aTidExpectedSn)); */
TRACE2(pRxQueue->hReport, REPORT_SEVERITY_WARNING, "RxQueue_ReceivePacket: frame Sequence Number (%d) is lower than expected sequence number (%d).\n", uFrameSn, pTidDataBase->aTidExpectedSn);
RxQueue_PassPacket (pRxQueue, tStatus, pBuffer);
return;
}
/* Part 2 - Frame Sequence Number between winStart and winEnd ? */
if ((BA_SESSION_IS_A_BIGGER_THAN_B (uFrameSn, pTidDataBase->aTidExpectedSn)) &&
/* mean: uFrameSn <= pTidDataBase->aTidExpectedSn + pTidDataBase->aTidWinSize) */
( ! BA_SESSION_IS_A_BIGGER_THAN_B (uFrameSn,(pTidDataBase->aTidExpectedSn + pTidDataBase->aTidWinSize - 1))))
{
TI_UINT16 uSaveIndex = pTidDataBase->aWinStartArrayInex + (TI_UINT16)((uFrameSn + SEQ_NUM_WRAP - pTidDataBase->aTidExpectedSn) & SEQ_NUM_MASK);
/* uSaveIndex % RX_QUEUE_ARRAY_SIZE */
uSaveIndex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
TRACE0(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: frame Sequence Number between winStart and winEnd.\n");
TRACE2(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: uSaveIndex = 0x%x(%d)",uSaveIndex,uSaveIndex);
/* Before storing packet in queue, make sure the place in the queue is vacant */
if (pTidDataBase->aPaketsQueue[uSaveIndex].pPacket == NULL)
{
TRACE0(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: Enter packet to Reorder Queue");
/* Store the packet in the queue */
pTidDataBase->aPaketsQueue[uSaveIndex].tStatus = tStatus;
pTidDataBase->aPaketsQueue[uSaveIndex].pPacket = (void *)pBuffer;
pTidDataBase->aPaketsQueue[uSaveIndex].uFrameSn = uFrameSn;
pRxQueue->tPacketTimeout.aPacketsStored++;
/* Start Timer [only if timer is not already started - according to bPacketMiss] */
if (pRxQueue->tPacketTimeout.bPacketMiss == TI_FALSE)
{
tmr_StartTimer (pRxQueue->hTimer, RxQueue_PacketTimeOut, pRxQueue, BA_SESSION_TIME_TO_SLEEP, TI_FALSE);
pRxQueue->tPacketTimeout.bPacketMiss = TI_TRUE;
pRxQueue->tPacketTimeout.aFrameTid = uFrameTid;
}
}
else
{
TRACE1(pRxQueue->hReport, REPORT_SEVERITY_ERROR, "RxQueue_ReceivePacket: frame Sequence has already saved. uFrameSn = %d\n", uFrameSn);
RxQueue_PassPacket (pRxQueue, TI_NOK, pBuffer);
return;
}
return;
}
/*
Part 3 - Frame Sequence Number higher than winEnd ?
*/
if ( BA_SESSION_IS_A_BIGGER_THAN_B (uFrameSn, (pTidDataBase->aTidExpectedSn + pTidDataBase->aTidWinSize - 1)) )
{
TI_UINT32 i;
TI_UINT16 uNewWinStartSn = (uFrameSn + SEQ_NUM_WRAP - pTidDataBase->aTidWinSize + 1) & SEQ_NUM_MASK;
TI_UINT16 uSaveIndex;
TRACE0(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: frame Sequence Number higher than winEnd.\n");
TRACE2(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: uNewWinStartSn = 0x%x(%d) STOP TIMER",uNewWinStartSn,uNewWinStartSn);
/* If timer is on - stop it */
if (pRxQueue->tPacketTimeout.bPacketMiss)
{
tmr_StopTimer (pRxQueue->hTimer);
pRxQueue->tPacketTimeout.bPacketMiss = TI_FALSE;
}
/* Increase the ArrayInex to the next */
pTidDataBase->aWinStartArrayInex++;
/* aWinStartArrayInex % RX_QUEUE_ARRAY_SIZE */
pTidDataBase->aWinStartArrayInex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
/* Update the Expected SN since the current one is lost */
pTidDataBase->aTidExpectedSn++;
pTidDataBase->aTidExpectedSn &= 0xFFF;
/* Pass all saved queue packets with SN lower than the new win start */
for (i = 0;
BA_SESSION_IS_A_BIGGER_THAN_B(uNewWinStartSn,pTidDataBase->aTidExpectedSn) &&
(i < RX_QUEUE_ARRAY_SIZE) &&
(i < pTidDataBase->aTidWinSize);
i++)
{
TRACE2(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: aTidExpectedSn = 0x%x(%d)",pTidDataBase->aTidExpectedSn,pTidDataBase->aTidExpectedSn);
TRACE2(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: aWinStartArrayInex = 0x%x(%d)",pTidDataBase->aWinStartArrayInex,pTidDataBase->aWinStartArrayInex);
if (pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket != NULL)
{
TRACE0(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: Send Packet to Upper layer");
RxQueue_PassPacket (pRxQueue,
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].tStatus,
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket);
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket = NULL;
pRxQueue->tPacketTimeout.aPacketsStored--;
}
pTidDataBase->aWinStartArrayInex++;
/* aWinStartArrayInex % RX_QUEUE_ARRAY_SIZE */
pTidDataBase->aWinStartArrayInex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
pTidDataBase->aTidExpectedSn++;
pTidDataBase->aTidExpectedSn &= 0xFFF;
}
TRACE2(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: aTidExpectedSn = 0x%x(%d)",pTidDataBase->aTidExpectedSn,pTidDataBase->aTidExpectedSn);
TRACE1(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: i = %d",i);
/* Calculate the new Expected SN */
if (i == pTidDataBase->aTidWinSize)
{
TRACE0(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: Set aTidExpectedSn to uNewWinStartSn");
pTidDataBase->aTidExpectedSn = uNewWinStartSn;
}
else
{
TRACE0(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: Send all saved packets");
/* In case the uWinStartDelta lower than aTidWinSize - check if there are packets stored in Array */
while (pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket != NULL)
{
TRACE2(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: Send packet with SN = 0x%x(%d)",pTidDataBase->aTidExpectedSn,pTidDataBase->aTidExpectedSn);
RxQueue_PassPacket ( pRxQueue,
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].tStatus,
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket
);
pTidDataBase->aPaketsQueue[pTidDataBase->aWinStartArrayInex].pPacket = NULL;
pTidDataBase->aWinStartArrayInex++;
/* aWinStartArrayInex % RX_QUEUE_ARRAY_SIZE */
pTidDataBase->aWinStartArrayInex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
pTidDataBase->aTidExpectedSn++;
pTidDataBase->aTidExpectedSn &= 0xFFF;
pRxQueue->tPacketTimeout.aPacketsStored--;
}
}
TRACE2(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: aTidExpectedSn = 0x%x(%d)",pTidDataBase->aTidExpectedSn,pTidDataBase->aTidExpectedSn);
if (pTidDataBase->aTidExpectedSn == uFrameSn)
{
TRACE0(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: Send current packet to uper layer");
/* pass the packet */
RxQueue_PassPacket (pRxQueue, tStatus, pBuffer);
pTidDataBase->aTidExpectedSn++;
pTidDataBase->aTidExpectedSn &= 0xfff;
}
else
{
uSaveIndex = pTidDataBase->aWinStartArrayInex + (TI_UINT16)((uFrameSn + SEQ_NUM_WRAP - pTidDataBase->aTidExpectedSn) & SEQ_NUM_MASK);
TRACE0(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: Enter current packet to Reorder Queue");
TRACE2(pRxQueue->hReport, REPORT_SEVERITY_INFORMATION, "RxQueue_ReceivePacket: uSaveIndex = 0x%x(%d)", uSaveIndex, uSaveIndex);
/* uSaveIndex % RX_QUEUE_ARRAY_SIZE */
uSaveIndex &= RX_QUEUE_ARRAY_SIZE_BIT_MASK;
/* Save the packet in the last entry of the queue */
pTidDataBase->aPaketsQueue[uSaveIndex].tStatus = tStatus;
pTidDataBase->aPaketsQueue[uSaveIndex].pPacket = (void *)pBuffer;
pTidDataBase->aPaketsQueue[uSaveIndex].pPacket = (void *)pBuffer;
pRxQueue->tPacketTimeout.aPacketsStored++;
}
/* aTidExpectedSn % 0xfff in order to take care of wrap around */
pTidDataBase->aTidExpectedSn &= 0xfff;
/* If there are still packets stored in the queue - start timer */
if (pRxQueue->tPacketTimeout.aPacketsStored)
{
tmr_StartTimer (pRxQueue->hTimer, RxQueue_PacketTimeOut, pRxQueue, BA_SESSION_TIME_TO_SLEEP, TI_FALSE);
pRxQueue->tPacketTimeout.bPacketMiss = TI_TRUE;
pRxQueue->tPacketTimeout.aFrameTid = uFrameTid;
}
return;
}
}