SK_BOOL		IsBc		/* Flag: packet is broadcast */
unsigned	*pOffset	/* offs. of bytes to present to SK_RLMT_LOOKAHEAD */
unsigned	*pNumBytes	/* #Bytes to present to SK_RLMT_LOOKAHEAD */
#endif	/* 0 */

#define SK_RLMT_PRE_LOOKAHEAD(pAC,PortNum,PktLen,IsBc,pOffset,pNumBytes) { \
	SK_AC	*_pAC; \
	SK_U32	_PortNum; \
	_pAC = (pAC); \
	_PortNum = (SK_U32)(PortNum); \
	/* _pAC->Rlmt.Port[_PortNum].PacketsRx++; */ \
	_pAC->Rlmt.Port[_PortNum].PacketsPerTimeSlot++; \
    if (_pAC->Rlmt.RlmtOff) { \
		*(pNumBytes) = 0; \
    } \
    else {\
	if ((_pAC->Rlmt.Port[_PortNum].Net->RlmtMode & SK_RLMT_TRANSPARENT) != 0) { \
		*(pNumBytes) = 0; \
	} \
	else if (IsBc) { \
		if (_pAC->Rlmt.Port[_PortNum].Net->RlmtMode != SK_RLMT_MODE_CLS) { \
			*(pNumBytes) = 6; \
			*(pOffset) = 6; \
		} \
		else { \
			*(pNumBytes) = 0; \
		} \
	} \
	else { \
		if ((PktLen) > SK_RLMT_MAX_TX_BUF_SIZE) { \
			/* _pAC->Rlmt.Port[_PortNum].DataPacketsPerTimeSlot++; */ \
			*(pNumBytes) = 0; \
		} \
		else { \
			*(pNumBytes) = 6; \
			*(pOffset) = 0; \
		} \
	} \
    } \
}

#if 0
SK_AC		*pAC		/* adapter context */
SK_U32		PortNum		/* receiving port */
SK_U8		*pLaPacket,	/* received packet's data (points to pOffset) */
SK_BOOL		IsBc		/* Flag: packet is broadcast */
SK_BOOL		IsMc		/* Flag: packet is multicast */
unsigned	*pForRlmt	/* Result: bits SK_RLMT_RX_RLMT, SK_RLMT_RX_PROTOCOL */
SK_RLMT_LOOKAHEAD() expects *pNumBytes from
packet offset *pOffset (s.a.) at *pLaPacket.

If you use SK_RLMT_LOOKAHEAD in a path where you already know if the packet is
BC, MC, or UC, you should use constants for IsBc and IsMc, so that your compiler
can trash unneeded parts of the if construction.
#endif	/* 0 */

#define SK_RLMT_LOOKAHEAD(pAC,PortNum,pLaPacket,IsBc,IsMc,pForRlmt) { \
	SK_AC	*_pAC; \
	SK_U32	_PortNum; \
	SK_U8	*_pLaPacket; \
	_pAC = (pAC); \
	_PortNum = (SK_U32)(PortNum); \
	_pLaPacket = (SK_U8 *)(pLaPacket); \
	if (IsBc) {\
		if (!SK_ADDR_EQUAL(_pLaPacket, _pAC->Addr.Net[_pAC->Rlmt.Port[ \
			_PortNum].Net->NetNumber].CurrentMacAddress.a)) { \
			_pAC->Rlmt.Port[_PortNum].BcTimeStamp = SkOsGetTime(_pAC); \
			_pAC->Rlmt.CheckSwitch = SK_TRUE; \
		} \
		/* _pAC->Rlmt.Port[_PortNum].DataPacketsPerTimeSlot++; */ \
		*(pForRlmt) = SK_RLMT_RX_PROTOCOL; \
	} \
	else if (IsMc) { \
		if (SK_ADDR_EQUAL(_pLaPacket, BridgeMcAddr.a)) { \
			_pAC->Rlmt.Port[_PortNum].BpduPacketsPerTimeSlot++; \
			if (_pAC->Rlmt.Port[_PortNum].Net->RlmtMode & SK_RLMT_CHECK_SEG) { \
				*(pForRlmt) = SK_RLMT_RX_RLMT | SK_RLMT_RX_PROTOCOL; \
			} \
			else { \
				*(pForRlmt) = SK_RLMT_RX_PROTOCOL; \
			} \
		} \
		else if (SK_ADDR_EQUAL(_pLaPacket, SkRlmtMcAddr.a)) { \
			*(pForRlmt) = SK_RLMT_RX_RLMT; \
		} \
		else { \
			/* _pAC->Rlmt.Port[_PortNum].DataPacketsPerTimeSlot++; */ \
			*(pForRlmt) = SK_RLMT_RX_PROTOCOL; \
		} \
	} \
	else { \
		if (SK_ADDR_EQUAL( \
			_pLaPacket, \
			_pAC->Addr.Port[_PortNum].CurrentMacAddress.a)) { \
			*(pForRlmt) = SK_RLMT_RX_RLMT; \
		} \
		else { \
			/* _pAC->Rlmt.Port[_PortNum].DataPacketsPerTimeSlot++; */ \
			*(pForRlmt) = SK_RLMT_RX_PROTOCOL; \
		} \
	} \
}

#ifdef SK_RLMT_FAST_LOOKAHEAD
Error: SK_RLMT_FAST_LOOKAHEAD no longer used. Use new macros for lookahead.
#endif	/* SK_RLMT_FAST_LOOKAHEAD */
#ifdef SK_RLMT_SLOW_LOOKAHEAD
Error: SK_RLMT_SLOW_LOOKAHEAD no longer used. Use new macros for lookahead.
#endif	/* SK_RLMT_SLOW_LOOKAHEAD */

/* typedefs *******************************************************************/

#ifdef SK_RLMT_MBUF_PRIVATE
typedef struct s_RlmtMbuf {
	some content
} SK_RLMT_MBUF;
#endif	/* SK_RLMT_MBUF_PRIVATE */


#ifdef SK_LA_INFO
typedef struct s_Rlmt_PacketInfo {
	unsigned	PacketLength;			/* Length of packet. */
	unsigned	PacketType;				/* Directed/Multicast/Broadcast. */
} SK_RLMT_PINFO;
#endif	/* SK_LA_INFO */


typedef struct s_RootId {
	SK_U8		Id[8];					/* Root Bridge Id. */
} SK_RLMT_ROOT_ID;


typedef struct s_port {
	SK_MAC_ADDR	CheckAddr;
	SK_BOOL		SuspectTx;
} SK_PORT_CHECK;


typedef struct s_RlmtNet SK_RLMT_NET;


typedef struct s_RlmtPort {

/* ----- Public part (read-only) ----- */

	SK_U8			PortState;				/* Current state of this port. */

	/* For PNMI */
	SK_BOOL			LinkDown;
	SK_BOOL			PortDown;
	SK_U8			Align01;

	SK_U32			PortNumber;				/* Number of port on adapter. */
	SK_RLMT_NET *	Net;					/* Net port belongs to. */

	SK_U64			TxHelloCts;
	SK_U64			RxHelloCts;
	SK_U64			TxSpHelloReqCts;
	SK_U64			RxSpHelloCts;

/* ----- Private part ----- */

/*	SK_U64			PacketsRx; */				/* Total packets received. */
	SK_U32			PacketsPerTimeSlot;		/* Packets rxed between TOs. */
/*	SK_U32			DataPacketsPerTimeSlot; */	/* Data packets ... */
	SK_U32			BpduPacketsPerTimeSlot;	/* BPDU packets rxed in TS. */
	SK_U64			BcTimeStamp;			/* Time of last BC receive. */
	SK_U64			GuTimeStamp;			/* Time of entering GOING_UP. */

	SK_TIMER		UpTimer;				/* Timer struct Link/Port up. */
	SK_TIMER		DownRxTimer;			/* Timer struct down rx. */
	SK_TIMER		DownTxTimer;			/* Timer struct down tx. */

	SK_U32			CheckingState;			/* Checking State. */

	SK_ADDR_PORT *	AddrPort;

	SK_U8			Random[4];				/* Random value. */
	unsigned		PortsChecked;			/* #ports checked. */
	unsigned		PortsSuspect;			/* #ports checked that are s. */
	SK_PORT_CHECK	PortCheck[1];
/*	SK_PORT_CHECK	PortCheck[SK_MAX_MACS - 1]; */

	SK_BOOL			PortStarted;			/* Port is started. */
	SK_BOOL			PortNoRx;				/* NoRx for >= 1 time slot. */
	SK_BOOL			RootIdSet;
	SK_RLMT_ROOT_ID	Root;					/* Root Bridge Id. */
} SK_RLMT_PORT;


struct s_RlmtNet {

/* ----- Public part (read-only) ----- */

	SK_U32			NetNumber;			/* Number of net. */

	SK_RLMT_PORT *	Port[SK_MAX_MACS];	/* Ports that belong to this net. */
	SK_U32			NumPorts;			/* Number of ports. */
	SK_U32			PrefPort;			/* Preferred port. */

	/* For PNMI */

	SK_U32			ChgBcPrio;			/* Change Priority of last broadcast received */
	SK_U32			RlmtMode;			/* Check ... */
	SK_U32			ActivePort;			/* Active port. */
	SK_U32			Preference;		/* 0xFFFFFFFF: Automatic. */

	SK_U8			RlmtState;			/* Current RLMT state. */

/* ----- Private part ----- */
	SK_BOOL			RootIdSet;
	SK_U16			Align01;

	int				LinksUp;			/* #Links up. */
	int				PortsUp;			/* #Ports up. */
	SK_U32			TimeoutValue;		/* RLMT timeout value. */

	SK_U32			CheckingState;		/* Checking State. */
	SK_RLMT_ROOT_ID	Root;				/* Root Bridge Id. */

	SK_TIMER		LocTimer;			/* Timer struct. */
	SK_TIMER		SegTimer;			/* Timer struct. */
};


typedef struct s_Rlmt {

/* ----- Public part (read-only) ----- */

	SK_U32			NumNets;			/* Number of nets. */
	SK_U32			NetsStarted;		/* Number of nets started. */
	SK_RLMT_NET		Net[SK_MAX_NETS];	/* Array of available nets. */
	SK_RLMT_PORT	Port[SK_MAX_MACS];	/* Array of available ports. */

/* ----- Private part ----- */
	SK_BOOL			CheckSwitch;
	SK_BOOL			RlmtOff;            /* set to zero if the Mac addresses
					   are equal or the second one
					   is zero */
	SK_U16			Align01;

} SK_RLMT;


extern	SK_MAC_ADDR	BridgeMcAddr;
extern	SK_MAC_ADDR	SkRlmtMcAddr;

/* function prototypes ********************************************************/


#ifndef SK_KR_PROTO

/* Functions provided by SkRlmt */

/* ANSI/C++ compliant function prototypes */

extern	void	SkRlmtInit(
	SK_AC	*pAC,
	SK_IOC	IoC,
	int		Level);

extern	int	SkRlmtEvent(
	SK_AC		*pAC,
	SK_IOC		IoC,
	SK_U32		Event,
	SK_EVPARA	Para);

#else	/* defined(SK_KR_PROTO) */

/* Non-ANSI/C++ compliant function prototypes */

#error KR-style function prototypes are not yet provided.

#endif	/* defined(SK_KR_PROTO)) */


#ifdef __cplusplus
}
#endif	/* __cplusplus */

#endif	/* __INC_SKRLMT_H */