connect.c

台湾RALink公司的 rt2570无线 802.11g 网卡的 驱动的源代码 ,支持linux2.4以上的 内河

		    MLME_SCAN_REQ_STRUCT       ScanReq;
			DBGPRINT(RT_DEBUG_TRACE, "CNTL - No matching BSS, start a new scan\n");
			// BroadSsid[0] = '\0';
			ScanParmFill(pAd, &ScanReq, pAd->Mlme.CntlAux.Ssid, pAd->Mlme.CntlAux.SsidLen, BSS_ANY, SCAN_ACTIVE);
			MlmeEnqueue(pAd, SYNC_STATE_MACHINE, MT2_MLME_SCAN_REQ, sizeof(MLME_SCAN_REQ_STRUCT), &ScanReq);
			pAd->Mlme.CntlMachine.CurrState = CNTL_WAIT_OID_LIST_SCAN;
			// Reset Missed scan number
//			pAd->PortCfg.IgnoredScanNumber = 0;
			pAd->PortCfg.LastScanTime = Now;
		}
		else
		{
			IterateOnBssTab(pAd);
		}
	} 
}

/*
	==========================================================================
	Description:
	==========================================================================
*/
VOID CntlOidRTBssidProc(
	IN PRT2570ADAPTER pAd, 
	IN MLME_QUEUE_ELEM * Elem) 
{
	ULONG		BssIdx;
	MACADDR 	*pOidBssid = (MACADDR *)Elem->Msg;
	MLME_DISASSOC_REQ_STRUCT	DisassocReq;
	MLME_JOIN_REQ_STRUCT		JoinReq;
 
	COPY_MAC_ADDR(&pAd->Mlme.CntlAux.Bssid, pOidBssid);
	BssIdx = BssTableSearch(&pAd->PortCfg.BssTab, pOidBssid);
	   
	if (BssIdx == BSS_NOT_FOUND) 
	{
		DBGPRINT(RT_DEBUG_TRACE, "CNTL - BSSID not found. reply NDIS_STATUS_NOT_ACCEPTED\n");
		if (pAd->Mlme.CntlAux.CurrReqIsFromNdis)
		{
			//NdisMSetInformationComplete(pAd->AdapterHandle, NDIS_STATUS_NOT_ACCEPTED);
		}
		pAd->Mlme.CntlMachine.CurrState = CNTL_IDLE;
		return;
	}

	// copy the matched BSS entry from PortCfg.BssTab to CntlAux.SsidBssTab
	pAd->Mlme.CntlAux.BssIdx = 0;
	pAd->Mlme.CntlAux.SsidBssTab.BssNr = 1;
	NdisMoveMemory(&pAd->Mlme.CntlAux.SsidBssTab.BssEntry[0], &pAd->PortCfg.BssTab.BssEntry[BssIdx], sizeof(BSS_ENTRY));

	// Add SSID into Mlme.CntlAux for site surey joining hidden SSID
	pAd->Mlme.CntlAux.SsidLen = pAd->Mlme.CntlAux.SsidBssTab.BssEntry[0].SsidLen;
	NdisMoveMemory(pAd->Mlme.CntlAux.Ssid, pAd->Mlme.CntlAux.SsidBssTab.BssEntry[0].Ssid, pAd->Mlme.CntlAux.SsidLen);	

	// 2002-11-26 skip the following checking. i.e. if user wants to re-connect to same AP
	// we just follow normal procedure. The reason of user doing this may because he/she changed
	// AP to another channel, but we still received BEACON from it thus don't claim Link Down.
	// Since user knows he's chnged AP channel, he'll re-connect again. By skipping the following
	// checking, we'll disassociate then re-do normal association with this AP at the new channel.
	// 2003-1-6 Re-enable this feature based on microsoft requirement which prefer not to re-do
	// connection when setting the same BSSID.
	if ( (pAd->MediaState == NdisMediaStateConnected) && //(INFRA_ON(pAd) || ADHOC_ON(pAd)) &&
		MAC_ADDR_EQUAL(&pAd->PortCfg.Bssid, pOidBssid))
	{
		// same BSSID, go back to idle state directly
		DBGPRINT(RT_DEBUG_TRACE, "CNTL - already in this BSSID. ignore this SET_BSSID request\n");
		if (pAd->Mlme.CntlAux.CurrReqIsFromNdis)
		{
			NdisMSetInformationComplete(pAd->AdapterHandle, NDIS_STATUS_SUCCESS);
		}
		pAd->Mlme.CntlMachine.CurrState = CNTL_IDLE;
	} 
	else 
	{
		if (INFRA_ON(pAd))
		{
			// disassoc from current AP first
			DBGPRINT(RT_DEBUG_TRACE, "CNTL - disassociate with current AP ...\n");
			DisassocParmFill(pAd, &DisassocReq, &pAd->PortCfg.Bssid, REASON_DISASSOC_STA_LEAVING);
			MlmeEnqueue(pAd, ASSOC_STATE_MACHINE, MT2_MLME_DISASSOC_REQ, 
						sizeof(MLME_DISASSOC_REQ_STRUCT), &DisassocReq);

			pAd->Mlme.CntlMachine.CurrState = CNTL_WAIT_DISASSOC;
		}
		else
		{
			if (ADHOC_ON(pAd))
			{
				DBGPRINT_RAW(RT_DEBUG_TRACE, "LinkDown(CntlOidRTBssidProc)\n");
				LinkDown(pAd);
				pAd->MediaState = NdisMediaStateDisconnected;
				NdisMIndicateStatus(pAd->AdapterHandle, NDIS_STATUS_MEDIA_DISCONNECT, (PVOID)NULL, 0);
				NdisMIndicateStatusComplete(pAd->AdapterHandle);
				DBGPRINT(RT_DEBUG_TRACE, "NDIS_STATUS_MEDIA_DISCONNECT Event C!\n");
			}
			
			// No active association, join the BSS immediately
			DBGPRINT(RT_DEBUG_TRACE, "CNTL - joining %02x:%02x:%02x:%02x:%02x:%02x ...\n",
				pOidBssid->Octet[0],pOidBssid->Octet[1],pOidBssid->Octet[2],
				pOidBssid->Octet[3],pOidBssid->Octet[4],pOidBssid->Octet[5]);
			JoinParmFill(pAd, &JoinReq, pAd->Mlme.CntlAux.BssIdx);
			MlmeEnqueue(pAd, SYNC_STATE_MACHINE, MT2_MLME_JOIN_REQ, sizeof(MLME_JOIN_REQ_STRUCT), &JoinReq);

			pAd->Mlme.CntlMachine.CurrState = CNTL_WAIT_JOIN;
		}
	} 
}

// Roaming is the only external request triggering CNTL state machine
// despite of other "SET OID" operation. All "SET OID" related oerations 
// happen in sequence, because no other SET OID will be sent to this device
// until the the previous SET operation is complete (successful o failed).
// So, how do we quarantee this ROAMING request won't corrupt other "SET OID"?
// or been corrupted by other "SET OID"?
VOID CntlMlmeRoamingProc(
	IN PRT2570ADAPTER pAd, 
	IN MLME_QUEUE_ELEM *Elem) 
{
	// TODO: 
	// AP in different channel may show lower RSSI than actual value??
	// should we add a weighting factor to compensate it?
	DBGPRINT(RT_DEBUG_TRACE,"CNTL - Roaming in CntlAux.RoamTab...\n");
	BssTableSortByRssi(&pAd->Mlme.CntlAux.RoamTab);
	pAd->Mlme.CntlAux.RoamIdx=0;
	IterateOnBssTab2(pAd);
	
}

/*
	==========================================================================
	Description:
	==========================================================================
*/
VOID CntlWaitDisassocProc(
	IN PRT2570ADAPTER pAd, 
	IN MLME_QUEUE_ELEM *Elem) 
{
	MLME_START_REQ_STRUCT	  StartReq;
	
	if (Elem->MsgType == MT2_DISASSOC_CONF) 
	{
		DBGPRINT_RAW(RT_DEBUG_TRACE, "LinkDown(CntlWaitDisassocProc)\n");
		LinkDown(pAd);
		
		// case 1. no matching BSS, and user wants ADHOC, so we just start a new one		
		if ((pAd->Mlme.CntlAux.SsidBssTab.BssNr==0) && (pAd->PortCfg.BssType == BSS_INDEP))
		{
			DBGPRINT(RT_DEBUG_TRACE, "CNTL - No matching BSS, start a new ADHOC (Ssid=%s)...\n",pAd->Mlme.CntlAux.Ssid);
			StartParmFill(pAd, &StartReq, pAd->Mlme.CntlAux.Ssid, pAd->Mlme.CntlAux.SsidLen);
			MlmeEnqueue(pAd, SYNC_STATE_MACHINE, MT2_MLME_START_REQ, sizeof(MLME_START_REQ_STRUCT), &StartReq);
			pAd->Mlme.CntlMachine.CurrState = CNTL_WAIT_START;
		}
		// case 2. try each matched BSS
		else
		{
			IterateOnBssTab(pAd);
		}
	}
}
			
/*
	==========================================================================
	Description:
	==========================================================================
*/
VOID CntlWaitJoinProc(
	IN PRT2570ADAPTER pAd, 
	IN MLME_QUEUE_ELEM *Elem) 
{
	USHORT						Reason;
	MLME_AUTH_REQ_STRUCT		AuthReq;

	if (Elem->MsgType == MT2_JOIN_CONF) 
	{
		NdisMoveMemory(&Reason, Elem->Msg, sizeof(USHORT));
		if (Reason == MLME_SUCCESS) 
		{
			// 1. joined an IBSS, we are pretty much done here
			if (pAd->PortCfg.BssType == BSS_INDEP)
			{
				LinkUp(pAd, BSS_INDEP);
				if (pAd->Mlme.CntlAux.CurrReqIsFromNdis)
				{
					NdisMSetInformationComplete(pAd->AdapterHandle, NDIS_STATUS_SUCCESS);
				}
				pAd->Mlme.CntlMachine.CurrState = CNTL_IDLE;

				RTMP_CLEAR_FLAG(pAd, fRTMP_ADAPTER_BSS_JOIN_IN_PROGRESS);//steven:for test
			} 
			// 2. joined a new INFRA network, start from authentication
			else 
			{
//				RTUSBWriteMACRegister(pAd, TXRX_CSR2, 0x67e);//steven:for test
				// either Ndis802_11AuthModeShared or Ndis802_11AuthModeAutoSwitch, try shared key first
				if ((pAd->PortCfg.AuthMode == Ndis802_11AuthModeShared) ||
					(pAd->PortCfg.AuthMode == Ndis802_11AuthModeAutoSwitch))
				{
					AuthParmFill(pAd, &AuthReq, &pAd->PortCfg.Bssid, Ndis802_11AuthModeShared);
				}
				else
				{
					AuthParmFill(pAd, &AuthReq, &pAd->PortCfg.Bssid, Ndis802_11AuthModeOpen);
				}
				MlmeEnqueue(pAd, AUTH_STATE_MACHINE, MT2_MLME_AUTH_REQ, 
							sizeof(MLME_AUTH_REQ_STRUCT), &AuthReq);

				pAd->Mlme.CntlMachine.CurrState = CNTL_WAIT_AUTH;
			}
		}
		else
		{
			// 3. failed, try next BSS
			pAd->Mlme.CntlAux.BssIdx++;
			IterateOnBssTab(pAd);
		} 
	}	 
}
			

/*
	==========================================================================
	Description:
	==========================================================================
*/
VOID CntlWaitStartProc(
	IN PRT2570ADAPTER pAd, 
	IN MLME_QUEUE_ELEM *Elem) 
{
	USHORT		Result;

	if (Elem->MsgType == MT2_START_CONF) 
	{
		NdisMoveMemory(&Result, Elem->Msg, sizeof(USHORT));
		if (Result == MLME_SUCCESS) 
		{
			DBGPRINT(RT_DEBUG_TRACE, "CNTL - We have started a new ADHOC network\n");
			DBGPRINT(RT_DEBUG_TRACE, "CNTL - BSSID %02x:%02x:%02x:%02x:%02x:%02x ...\n", 
				pAd->PortCfg.Bssid.Octet[0],
				pAd->PortCfg.Bssid.Octet[1],
				pAd->PortCfg.Bssid.Octet[2],
				pAd->PortCfg.Bssid.Octet[3],
				pAd->PortCfg.Bssid.Octet[4],
				pAd->PortCfg.Bssid.Octet[5]);
			LinkUp(pAd, BSS_INDEP);
			if (pAd->Mlme.CntlAux.CurrReqIsFromNdis)
			{
				NdisMSetInformationComplete(pAd->AdapterHandle, NDIS_STATUS_SUCCESS);
			}
			pAd->Mlme.CntlMachine.CurrState = CNTL_IDLE;
			
			RTMP_CLEAR_FLAG(pAd, fRTMP_ADAPTER_BSS_JOIN_IN_PROGRESS);//steven:for test
		}
		else
		{
			DBGPRINT(RT_DEBUG_TRACE, "CNTL - Start FAIL. BUG!!!!!\n");
			if (pAd->Mlme.CntlAux.CurrReqIsFromNdis)
			{
				NdisMSetInformationComplete(pAd->AdapterHandle, NDIS_STATUS_FAILURE);
			}
			pAd->Mlme.CntlMachine.CurrState = CNTL_IDLE;
			
			RTMP_CLEAR_FLAG(pAd, fRTMP_ADAPTER_BSS_JOIN_IN_PROGRESS);//steven:for test
		}
	}
}

/*
	==========================================================================
	Description:
	==========================================================================
*/
VOID CntlWaitAuthProc(
	IN PRT2570ADAPTER pAd, 
	IN MLME_QUEUE_ELEM *Elem) 
{
	USHORT						 Reason;
	MLME_ASSOC_REQ_STRUCT		 AssocReq;
	MLME_AUTH_REQ_STRUCT		 AuthReq;

	if (Elem->MsgType == MT2_AUTH_CONF) 
	{
		NdisMoveMemory(&Reason, Elem->Msg, sizeof(USHORT));
		if (Reason == MLME_SUCCESS) 
		{
			AssocParmFill(pAd, &AssocReq, &pAd->PortCfg.Bssid, pAd->PortCfg.CapabilityInfo, 
						  ASSOC_TIMEOUT, pAd->PortCfg.DefaultListenCount);
			MlmeEnqueue(pAd, ASSOC_STATE_MACHINE, MT2_MLME_ASSOC_REQ, 
						sizeof(MLME_ASSOC_REQ_STRUCT), &AssocReq);

			pAd->Mlme.CntlMachine.CurrState = CNTL_WAIT_ASSOC;
		} 
		else
		{
			// This fail may because of the AP already keep us in its MAC table without 
			// ageing-out. The previous authentication attempt must have let it remove us.
			// so try Authentication again may help. For D-Link DWL-900AP+ compatibility.
			DBGPRINT(RT_DEBUG_TRACE, "CNTL - AUTH FAIL, try again...\n");
			if ((pAd->PortCfg.AuthMode == Ndis802_11AuthModeShared) ||
				(pAd->PortCfg.AuthMode == Ndis802_11AuthModeAutoSwitch))
			{
				// either Ndis802_11AuthModeShared or Ndis802_11AuthModeAutoSwitch, try shared key first
				AuthParmFill(pAd, &AuthReq, &pAd->PortCfg.Bssid, Ndis802_11AuthModeShared);
			}
			else
			{
				AuthParmFill(pAd, &AuthReq, &pAd->PortCfg.Bssid, Ndis802_11AuthModeOpen);
			}
			
			MlmeEnqueue(pAd, AUTH_STATE_MACHINE, MT2_MLME_AUTH_REQ, 
						sizeof(MLME_AUTH_REQ_STRUCT), &AuthReq);

			pAd->Mlme.CntlMachine.CurrState = CNTL_WAIT_AUTH2;
		}
	}	 
}
			
/*
	==========================================================================
	Description:
	==========================================================================
*/
VOID CntlWaitAuthProc2(
	IN PRT2570ADAPTER pAd, 
	IN MLME_QUEUE_ELEM *Elem) 
{
	USHORT						 Reason;
	MLME_ASSOC_REQ_STRUCT		 AssocReq;
	MLME_AUTH_REQ_STRUCT		 AuthReq;

	if (Elem->MsgType == MT2_AUTH_CONF) 
	{
		NdisMoveMemory(&Reason, Elem->Msg, sizeof(USHORT));
		if (Reason == MLME_SUCCESS) 
		{
			AssocParmFill(pAd, &AssocReq, &pAd->PortCfg.Bssid, pAd->PortCfg.CapabilityInfo, 
						  ASSOC_TIMEOUT, pAd->PortCfg.DefaultListenCount);
			MlmeEnqueue(pAd, ASSOC_STATE_MACHINE, MT2_MLME_ASSOC_REQ, 
						sizeof(MLME_ASSOC_REQ_STRUCT), &AssocReq);

			pAd->Mlme.CntlMachine.CurrState = CNTL_WAIT_ASSOC;
		} 
		else
		{
			if ((pAd->PortCfg.AuthMode == Ndis802_11AuthModeAutoSwitch) &&
				 (pAd->Mlme.AuthAux.Alg == Ndis802_11AuthModeShared))
			{
				DBGPRINT(RT_DEBUG_TRACE, "CNTL - AUTH FAIL, try OPEN system...\n");
				AuthParmFill(pAd, &AuthReq, &pAd->PortCfg.Bssid, Ndis802_11AuthModeOpen);
				MlmeEnqueue(pAd, AUTH_STATE_MACHINE, MT2_MLME_AUTH_REQ, 
							sizeof(MLME_AUTH_REQ_STRUCT), &AuthReq);

				pAd->Mlme.CntlMachine.CurrState = CNTL_WAIT_AUTH2;
			}
			else 
			{
				// not success, try next BSS
				DBGPRINT(RT_DEBUG_TRACE, "CNTL - AUTH FAIL, give up; try next BSS\n");
				pAd->Mlme.CntlMachine.CurrState = CNTL_IDLE; //???????
				pAd->Mlme.CntlAux.BssIdx++;
//				RTUSBWriteMACRegister(pAd, TXRX_CSR2, 0x7e);//steven:for test
				IterateOnBssTab(pAd);
			}