cmm_data.c

ralink 2870 usb无线网卡 最新驱动

									the same policy to handle it.
								Force LowRate,  //pTxBlk->bForceLowRate = TRUE;
								
					11N Rate :
								No piggyback,	//pTxBlk->bPiggyBack = FALSE;
								
								(1).AMSDU
									pTxBlk->bWMM = TRUE;
								(2).AMPDU
									pTxBlk->bWMM = TRUE;
								(3).Normal
									
					B/G Rate :
								(1).ARALINK
									
								(2).Normal
	========================================================================
*/
static UCHAR TxPktClassification(
	IN RTMP_ADAPTER *pAd,
	IN PNDIS_PACKET  pPacket)
{
	UCHAR			TxFrameType = TX_UNKOWN_FRAME;
	UCHAR			Wcid;
	MAC_TABLE_ENTRY	*pMacEntry = NULL;
#ifdef DOT11_N_SUPPORT
	BOOLEAN			bHTRate = FALSE;
#endif // DOT11_N_SUPPORT //

	Wcid = RTMP_GET_PACKET_WCID(pPacket);
	if (Wcid == MCAST_WCID)
	{	// Handle for RA is Broadcast/Multicast Address.
		return TX_MCAST_FRAME;
	}

	// Handle for unicast packets
	pMacEntry = &pAd->MacTab.Content[Wcid];
	if (RTMP_GET_PACKET_LOWRATE(pPacket))
	{	// It's a specific packet need to force low rate, i.e., bDHCPFrame, bEAPOLFrame, bWAIFrame
		TxFrameType = TX_LEGACY_FRAME;
	}
#ifdef DOT11_N_SUPPORT
	else if (IS_HT_RATE(pMacEntry))
	{	// it's a 11n capable packet

		// Depends on HTPhyMode to check if the peer support the HTRate transmission.
		// 	Currently didn't support A-MSDU embedded in A-MPDU
		bHTRate = TRUE;
		if (RTMP_GET_PACKET_MOREDATA(pPacket) || (pMacEntry->PsMode == PWR_SAVE))
			TxFrameType = TX_LEGACY_FRAME;
#ifdef UAPSD_AP_SUPPORT
		else if (RTMP_GET_PACKET_EOSP(pPacket))
			TxFrameType = TX_LEGACY_FRAME;
#endif // UAPSD_AP_SUPPORT //
		else if((pMacEntry->TXBAbitmap & (1<<(RTMP_GET_PACKET_UP(pPacket)))) != 0)
			return TX_AMPDU_FRAME;
		else if(CLIENT_STATUS_TEST_FLAG(pMacEntry, fCLIENT_STATUS_AMSDU_INUSED))
			return TX_AMSDU_FRAME;
		else
			TxFrameType = TX_LEGACY_FRAME;
	}
#endif // DOT11_N_SUPPORT //
	else
	{	// it's a legacy b/g packet.
		if ((CLIENT_STATUS_TEST_FLAG(pMacEntry, fCLIENT_STATUS_AGGREGATION_CAPABLE) && pAd->CommonCfg.bAggregationCapable) &&
			(RTMP_GET_PACKET_TXRATE(pPacket) >= RATE_6) &&
			(!(OPSTATUS_TEST_FLAG(pAd, fOP_STATUS_WMM_INUSED) && CLIENT_STATUS_TEST_FLAG(pMacEntry, fCLIENT_STATUS_WMM_CAPABLE))))
		{	// if peer support Ralink Aggregation, we use it.
			TxFrameType = TX_RALINK_FRAME;
		}
		else
		{
			TxFrameType = TX_LEGACY_FRAME;
		}
	}

	// Currently, our fragment only support when a unicast packet send as NOT-ARALINK, NOT-AMSDU and NOT-AMPDU.
	if ((RTMP_GET_PACKET_FRAGMENTS(pPacket) > 1) && (TxFrameType == TX_LEGACY_FRAME))
		TxFrameType = TX_FRAG_FRAME;

	return TxFrameType;
}


BOOLEAN RTMP_FillTxBlkInfo(
	IN RTMP_ADAPTER *pAd,
	IN TX_BLK *pTxBlk)
{
	PACKET_INFO			PacketInfo;
	PNDIS_PACKET		pPacket;
	PMAC_TABLE_ENTRY	pMacEntry = NULL;

	pPacket = pTxBlk->pPacket;
	RTMP_QueryPacketInfo(pPacket, &PacketInfo, &pTxBlk->pSrcBufHeader, &pTxBlk->SrcBufLen);

	pTxBlk->Wcid	 	 		= RTMP_GET_PACKET_WCID(pPacket);
	pTxBlk->apidx		 		= RTMP_GET_PACKET_IF(pPacket);
	pTxBlk->UserPriority 		= RTMP_GET_PACKET_UP(pPacket);
	pTxBlk->FrameGap = IFS_HTTXOP;		// ASIC determine Frame Gap

	if (RTMP_GET_PACKET_CLEAR_EAP_FRAME(pTxBlk->pPacket))
		TX_BLK_SET_FLAG(pTxBlk, fTX_bClearEAPFrame);
	else
		TX_BLK_CLEAR_FLAG(pTxBlk, fTX_bClearEAPFrame);
	
	// Default to clear this flag
	TX_BLK_CLEAR_FLAG(pTxBlk, fTX_bForceNonQoS);
	
	if (pTxBlk->Wcid == MCAST_WCID)
	{
		pTxBlk->pMacEntry = NULL;
		{
#ifdef MCAST_RATE_SPECIFIC
			PUCHAR pDA = GET_OS_PKT_DATAPTR(pPacket);
			if (((*pDA & 0x01) == 0x01) && (*pDA != 0xff))
				pTxBlk->pTransmit = &pAd->CommonCfg.MCastPhyMode;
			else
#endif // MCAST_RATE_SPECIFIC //
				pTxBlk->pTransmit = &pAd->MacTab.Content[MCAST_WCID].HTPhyMode;
		}
		
		TX_BLK_CLEAR_FLAG(pTxBlk, fTX_bAckRequired);	// AckRequired = FALSE, when broadcast packet in Adhoc mode.
		//TX_BLK_SET_FLAG(pTxBlk, fTX_bForceLowRate);
		TX_BLK_CLEAR_FLAG(pTxBlk, fTX_bAllowFrag);
		TX_BLK_CLEAR_FLAG(pTxBlk, fTX_bWMM);
		if (RTMP_GET_PACKET_MOREDATA(pPacket))
		{
			TX_BLK_SET_FLAG(pTxBlk, fTX_bMoreData);
		}		
	}
	else
	{
		pTxBlk->pMacEntry = &pAd->MacTab.Content[pTxBlk->Wcid];
		pTxBlk->pTransmit = &pTxBlk->pMacEntry->HTPhyMode;

		pMacEntry = pTxBlk->pMacEntry;
				
		// For all unicast packets, need Ack unless the Ack Policy is not set as NORMAL_ACK.
		if (pAd->CommonCfg.AckPolicy[pTxBlk->QueIdx] != NORMAL_ACK)
			TX_BLK_CLEAR_FLAG(pTxBlk, fTX_bAckRequired);
		else
			TX_BLK_SET_FLAG(pTxBlk, fTX_bAckRequired);

#ifdef CONFIG_STA_SUPPORT
		if ((pAd->OpMode == OPMODE_STA) &&
			(ADHOC_ON(pAd)) && 
			(RX_FILTER_TEST_FLAG(pAd, fRX_FILTER_ACCEPT_PROMISCUOUS)))
		{
			if(pAd->CommonCfg.PSPXlink)
				TX_BLK_CLEAR_FLAG(pTxBlk, fTX_bAckRequired);
		}
#endif // CONFIG_STA_SUPPORT //

		{

#ifdef CONFIG_STA_SUPPORT
			IF_DEV_CONFIG_OPMODE_ON_STA(pAd)
			{

				// If support WMM, enable it.
				if (OPSTATUS_TEST_FLAG(pAd, fOP_STATUS_WMM_INUSED) &&
					CLIENT_STATUS_TEST_FLAG(pMacEntry, fCLIENT_STATUS_WMM_CAPABLE))
					TX_BLK_SET_FLAG(pTxBlk, fTX_bWMM);
		
//				if (pAd->StaCfg.bAutoTxRateSwitch)
//					TX_BLK_SET_FLAG(pTxBlk, fTX_AutoRateSwitch);
			}
#endif // CONFIG_STA_SUPPORT //
		}

		if (pTxBlk->TxFrameType == TX_LEGACY_FRAME)
		{
			if ( (RTMP_GET_PACKET_LOWRATE(pPacket)) ||
                ((pAd->OpMode == OPMODE_AP) && (pMacEntry->MaxHTPhyMode.field.MODE == MODE_CCK) && (pMacEntry->MaxHTPhyMode.field.MCS == RATE_1)))
			{	// Specific packet, i.e., bDHCPFrame, bEAPOLFrame, bWAIFrame, need force low rate.
				pTxBlk->pTransmit = &pAd->MacTab.Content[MCAST_WCID].HTPhyMode;
#ifdef DOT11_N_SUPPORT
				// Modify the WMM bit for ICV issue. If we have a packet with EOSP field need to set as 1, how to handle it???
				if (IS_HT_STA(pTxBlk->pMacEntry) &&
					(CLIENT_STATUS_TEST_FLAG(pMacEntry, fCLIENT_STATUS_RALINK_CHIPSET)) &&
					((pAd->CommonCfg.bRdg == TRUE) && CLIENT_STATUS_TEST_FLAG(pMacEntry, fCLIENT_STATUS_RDG_CAPABLE)))
				{
					TX_BLK_CLEAR_FLAG(pTxBlk, fTX_bWMM);
					TX_BLK_SET_FLAG(pTxBlk, fTX_bForceNonQoS);
				}
#endif // DOT11_N_SUPPORT //
			}
			
#ifdef DOT11_N_SUPPORT
			if ( (IS_HT_RATE(pMacEntry) == FALSE) &&
				(CLIENT_STATUS_TEST_FLAG(pMacEntry, fCLIENT_STATUS_PIGGYBACK_CAPABLE)))
			{	// Currently piggy-back only support when peer is operate in b/g mode.
				TX_BLK_SET_FLAG(pTxBlk, fTX_bPiggyBack);
			}
#endif // DOT11_N_SUPPORT //

			if (RTMP_GET_PACKET_MOREDATA(pPacket))
			{
				TX_BLK_SET_FLAG(pTxBlk, fTX_bMoreData);
			}
#ifdef UAPSD_AP_SUPPORT
			if (RTMP_GET_PACKET_EOSP(pPacket))
			{
				TX_BLK_SET_FLAG(pTxBlk, fTX_bWMM_UAPSD_EOSP);
			}
#endif // UAPSD_AP_SUPPORT //
		}
		else if (pTxBlk->TxFrameType == TX_FRAG_FRAME)
		{
			TX_BLK_SET_FLAG(pTxBlk, fTX_bAllowFrag);
		}
		
		pMacEntry->DebugTxCount++;
	}

	return TRUE;
}


BOOLEAN CanDoAggregateTransmit(
	IN RTMP_ADAPTER *pAd,
	IN NDIS_PACKET *pPacket,
	IN TX_BLK		*pTxBlk)
{

	//DBGPRINT(RT_DEBUG_TRACE, ("Check if can do aggregation! TxFrameType=%d!\n", pTxBlk->TxFrameType));
	
	if (RTMP_GET_PACKET_WCID(pPacket) == MCAST_WCID)
		return FALSE;

	if (RTMP_GET_PACKET_DHCP(pPacket) ||
		RTMP_GET_PACKET_EAPOL(pPacket) ||
		RTMP_GET_PACKET_WAI(pPacket))
		return FALSE;
	
	if ((pTxBlk->TxFrameType == TX_AMSDU_FRAME) &&
		((pTxBlk->TotalFrameLen + GET_OS_PKT_LEN(pPacket))> (RX_BUFFER_AGGRESIZE - 100)))
	{	// For AMSDU, allow the packets with total length < max-amsdu size
		return FALSE;
	}
	
	if ((pTxBlk->TxFrameType == TX_RALINK_FRAME) &&
		(pTxBlk->TxPacketList.Number == 2))
	{	// For RALINK-Aggregation, allow two frames in one batch.
		return FALSE;
	}

#ifdef CONFIG_STA_SUPPORT
	if ((INFRA_ON(pAd)) && (pAd->OpMode == OPMODE_STA)) // must be unicast to AP
		return TRUE;
	else
#endif // CONFIG_STA_SUPPORT //
		return FALSE;
	
}


/*
	========================================================================

	Routine Description:
		To do the enqueue operation and extract the first item of waiting
		list. If a number of available shared memory segments could meet
		the request of extracted item, the extracted item will be fragmented
		into shared memory segments.
	
	Arguments:
		pAd Pointer to our adapter
		pQueue		Pointer to Waiting Queue
		
	Return Value:
		None

	IRQL = DISPATCH_LEVEL
	
	Note:
	
	========================================================================
*/
VOID RTMPDeQueuePacket(
	IN  PRTMP_ADAPTER   pAd,
	IN  BOOLEAN         bIntContext,
	IN  UCHAR			QIdx, /* BulkOutPipeId */
	IN  UCHAR           Max_Tx_Packets)
{
	PQUEUE_ENTRY    pEntry = NULL;
	PNDIS_PACKET 	pPacket;
	NDIS_STATUS     Status = NDIS_STATUS_SUCCESS;
	UCHAR           Count=0;
	PQUEUE_HEADER   pQueue;
	ULONG           FreeNumber[NUM_OF_TX_RING];
	UCHAR			QueIdx, sQIdx, eQIdx;
	unsigned long	IrqFlags = 0;
	BOOLEAN			hasTxDesc = FALSE;
	TX_BLK			TxBlk;
	TX_BLK			*pTxBlk;

#ifdef DBG_DIAGNOSE
	BOOLEAN			firstRound;
	RtmpDiagStruct	*pDiagStruct = &pAd->DiagStruct;
#endif


	if (QIdx == NUM_OF_TX_RING)
	{
		sQIdx = 0;
		eQIdx = 3;	// 4 ACs, start from 0.
	}
	else
	{
		sQIdx = eQIdx = QIdx;
	}

	for (QueIdx=sQIdx; QueIdx <= eQIdx; QueIdx++)
	{
		Count=0;

		RTMP_START_DEQUEUE(pAd, QueIdx, IrqFlags);

#ifdef DBG_DIAGNOSE
		firstRound = ((QueIdx == 0) ? TRUE : FALSE);
#endif // DBG_DIAGNOSE //

		while (1)
		{
			if ((RTMP_TEST_FLAG(pAd, (fRTMP_ADAPTER_BSS_SCAN_IN_PROGRESS |
										fRTMP_ADAPTER_RADIO_OFF |
										fRTMP_ADAPTER_RESET_IN_PROGRESS |
										fRTMP_ADAPTER_HALT_IN_PROGRESS |
										fRTMP_ADAPTER_NIC_NOT_EXIST))))
			{
				RTMP_STOP_DEQUEUE(pAd, QueIdx, IrqFlags);
				return;
			}
			
			if (Count >= Max_Tx_Packets)
				break;
			
			DEQUEUE_LOCK(&pAd->irq_lock, bIntContext, IrqFlags);
			if (&pAd->TxSwQueue[QueIdx] == NULL)
			{
#ifdef DBG_DIAGNOSE
				if (firstRound == TRUE)
					pDiagStruct->TxSWQueCnt[pDiagStruct->ArrayCurIdx][0]++;
#endif // DBG_DIAGNOSE //
				DEQUEUE_UNLOCK(&pAd->irq_lock, bIntContext, IrqFlags);
				break;
			}


			// probe the Queue Head
			pQueue = &pAd->TxSwQueue[QueIdx];
			if ((pEntry = pQueue->Head) == NULL)
			{
				DEQUEUE_UNLOCK(&pAd->irq_lock, bIntContext, IrqFlags);
				break;
			}

			pTxBlk = &TxBlk;
			NdisZeroMemory((PUCHAR)pTxBlk, sizeof(TX_BLK));
			//InitializeQueueHeader(&pTxBlk->TxPacketList);		// Didn't need it because we already memzero it.
			pTxBlk->QueIdx = QueIdx;
	
			pPacket = QUEUE_ENTRY_TO_PACKET(pEntry);

			
			// Early check to make sure we have enoguh Tx Resource.
			hasTxDesc = RTMP_HAS_ENOUGH_FREE_DESC(pAd, pTxBlk, FreeNumber[QueIdx], pPacket);
			if (!hasTxDesc)
			{
				pAd->PrivateInfo.TxRingFullCnt++;

				DEQUEUE_UNLOCK(&pAd->irq_lock, bIntContext, IrqFlags);
				
				break;
			}

			pTxBlk->TxFrameType = TxPktClassification(pAd, pPacket);
			pEntry = RemoveHeadQueue(pQueue);
			pTxBlk->TotalFrameNum++;
			pTxBlk->TotalFragNum += RTMP_GET_PACKET_FRAGMENTS(pPacket);	// The real fragment number maybe vary
			pTxBlk->TotalFrameLen += GET_OS_PKT_LEN(pPacket);
			pTxBlk->pPacket = pPacket;
			InsertTailQueue(&pTxBlk->TxPacketList, PACKET_TO_QUEUE_ENTRY(pPacket));
			
			if (pTxBlk->TxFrameType == TX_RALINK_FRAME || pTxBlk->TxFrameType == TX_AMSDU_FRAME)
			{
				// Enhance SW Aggregation Mechanism
				if (NEED_QUEUE_BACK_FOR_AGG(pAd, QueIdx, FreeNumber[QueIdx], pTxBlk->TxFrameType))
				{
					InsertHeadQueue(pQueue, PACKET_TO_QUEUE_ENTRY(pPacket));
					DEQUEUE_UNLOCK(&pAd->irq_lock, bIntContext, IrqFlags);
					break;
				}

				do{
					if((pEntry = pQueue->Head) == NULL)
						break;

					// For TX_AMSDU_FRAME/TX_RALINK_FRAME, Need to check if next pakcet can do aggregation.
					pPacket = QUEUE_ENTRY_TO_PACKET(pEntry);
					FreeNumber[QueIdx] = GET_TXRING_FREENO(pAd, QueIdx);
					hasTxDesc = RTMP_HAS_ENOUGH_FREE_DESC(pAd, pTxBlk, FreeNumber[QueIdx], pPacket);
					if ((hasTxDesc == FALSE) || (CanDoAggregateTransmit(pAd, pPacket, pTxBlk) == FALSE))
						break;

					//Remove the packet from the TxSwQueue and insert into pTxBlk
					pEntry = RemoveHeadQueue(pQueue);
					ASSERT(pEntry);
					pPacket = QUEUE_ENTRY_TO_PACKET(pEntry);
					pTxBlk->TotalFrameNum++;
					pTxBlk->TotalFragNum += RTMP_GET_PACKET_FRAGMENTS(pPacket);	// The real fragment number maybe vary
					pTxBlk->TotalFrameLen += GET_OS_PKT_LEN(pPacket);
					InsertTailQueue(&pTxBlk->TxPacketList, PACKET_TO_QUEUE_ENTRY(pPacket));
				}while(1);

				if (pTxBlk->TxPacketList.Number == 1)
					pTxBlk->TxFrameType = TX_LEGACY_FRAME;
			}

#ifdef RTMP_MAC_USB
			DEQUEUE_UNLOCK(&pAd->irq_lock, bIntContext, IrqFlags);
#endif // RTMP_MAC_USB //
					
			Count += pTxBlk->TxPacketList.Number;


				// Do HardTransmit now.
#ifdef CONFIG_STA_SUPPORT
			IF_DEV_CONFIG_OPMODE_ON_STA(pAd)
				Status = STAHardTransmit(pAd, pTxBlk, QueIdx);
#endif // CONFIG_STA_SUPPORT //


		}

		RTMP_STOP_DEQUEUE(pAd, QueIdx, IrqFlags);

#ifdef RTMP_MAC_USB
		if (!hasTxDesc)
			RTUSBKickBulkOut(pAd);
#endif // RTMP_MAC_USB //
		
#ifdef BLOCK_NET_IF
		if ((pAd->blockQueueTab[QueIdx].SwTxQueueBlockFlag == TRUE)
			&& (pAd->TxSwQueue[QueIdx].Number < 1))
		{
			releaseNetIf(&pAd->blockQueueTab[QueIdx]);
		}
#endif // BLOCK_NET_IF //

	}

}


/*
	========================================================================

	Routine Description:
		Calculates the duration which is required to transmit out frames
	with given size and specified rate.
		
	Arguments:
		pAd 	Pointer to our adapter
		Rate			Transmit rate
		Size			Frame size in units of byte
		
	Return Value:
		Duration number in units of usec

	IRQL = PASSIVE_LEVEL
	IRQL = DISPATCH_LEVEL
	
	Note:
	
	========================================================================
*/
USHORT	RTMPCalcDuration(
	IN	PRTMP_ADAPTER	pAd,
	IN	UCHAR			Rate,
	IN	ULONG			Size)
{
	ULONG	Duration = 0;