pmf.c

h内核

/******************************************************************************
 *
 *	(C)Copyright 1998,1999 SysKonnect,
 *	a business unit of Schneider & Koch & Co. Datensysteme GmbH.
 *
 *	See the file "skfddi.c" for further information.
 *
 *	This program is free software; you can redistribute it and/or modify
 *	it under the terms of the GNU General Public License as published by
 *	the Free Software Foundation; either version 2 of the License, or
 *	(at your option) any later version.
 *
 *	The information in this file is provided "AS IS" without warranty.
 *
 ******************************************************************************/

/*
	Parameter Management Frame processing for SMT 7.2
*/

#include "h/types.h"
#include "h/fddi.h"
#include "h/smc.h"
#include "h/smt_p.h"

#define KERNEL
#include "h/smtstate.h"

#ifndef	SLIM_SMT

#ifndef	lint
static const char ID_sccs[] = "@(#)pmf.c	1.37 97/08/04 (C) SK " ;
#endif

static int smt_authorize(struct s_smc *smc, struct smt_header *sm);
static int smt_check_set_count(struct s_smc *smc, struct smt_header *sm);
static const struct s_p_tab* smt_get_ptab(u_short para);
static int smt_mib_phys(struct s_smc *smc);
int smt_set_para(struct s_smc *smc, struct smt_para *pa, int index, int local,
		 int set);
void smt_add_para(struct s_smc *smc, struct s_pcon *pcon, u_short para,
		  int index, int local);
static SMbuf *smt_build_pmf_response(struct s_smc *smc, struct smt_header *req,
				     int set, int local);

#define MOFFSS(e)	((int)&(((struct fddi_mib *)0)->e))
#define MOFFSA(e)	((int) (((struct fddi_mib *)0)->e))

#define MOFFMS(e)	((int)&(((struct fddi_mib_m *)0)->e))
#define MOFFMA(e)	((int) (((struct fddi_mib_m *)0)->e))

#define MOFFAS(e)	((int)&(((struct fddi_mib_a *)0)->e))
#define MOFFAA(e)	((int) (((struct fddi_mib_a *)0)->e))

#define MOFFPS(e)	((int)&(((struct fddi_mib_p *)0)->e))
#define MOFFPA(e)	((int) (((struct fddi_mib_p *)0)->e))


#define AC_G	0x01		/* Get */
#define AC_GR	0x02		/* Get/Set */
#define AC_S	0x04		/* Set */
#define AC_NA	0x08
#define AC_GROUP	0x10		/* Group */
#define MS2BCLK(x)	((x)*12500L)
/*
	F	LFag (byte)
	B	byte
	S	u_short	16 bit
	C	Counter 32 bit
	L	Long 32 bit
	T	Timer_2	32 bit
	P	TimeStamp ;
	A	LongAddress (6 byte)
	E	Enum 16 bit
	R	ResId 16 Bit
*/
static const struct s_p_tab {
	u_short	p_num ;		/* parameter code */
	u_char	p_access ;	/* access rights */
	u_short	p_offset ;	/* offset in mib */
	char	p_swap[3] ;	/* format string */
} p_tab[] = {
	/* StationIdGrp */
	{ SMT_P100A,AC_GROUP	} ,
	{ SMT_P100B,AC_G,	MOFFSS(fddiSMTStationId),	"8"	} ,
	{ SMT_P100D,AC_G,	MOFFSS(fddiSMTOpVersionId),	"S"	} ,
	{ SMT_P100E,AC_G,	MOFFSS(fddiSMTHiVersionId),	"S"	} ,
	{ SMT_P100F,AC_G,	MOFFSS(fddiSMTLoVersionId),	"S"	} ,
	{ SMT_P1010,AC_G,	MOFFSA(fddiSMTManufacturerData), "D" } ,
	{ SMT_P1011,AC_GR,	MOFFSA(fddiSMTUserData),	"D"	} ,
	{ SMT_P1012,AC_G,	MOFFSS(fddiSMTMIBVersionId),	"S"	} ,

	/* StationConfigGrp */
	{ SMT_P1014,AC_GROUP	} ,
	{ SMT_P1015,AC_G,	MOFFSS(fddiSMTMac_Ct),		"B"	} ,
	{ SMT_P1016,AC_G,	MOFFSS(fddiSMTNonMaster_Ct),	"B"	} ,
	{ SMT_P1017,AC_G,	MOFFSS(fddiSMTMaster_Ct),	"B"	} ,
	{ SMT_P1018,AC_G,	MOFFSS(fddiSMTAvailablePaths),	"B"	} ,
	{ SMT_P1019,AC_G,	MOFFSS(fddiSMTConfigCapabilities),"S"	} ,
	{ SMT_P101A,AC_GR,	MOFFSS(fddiSMTConfigPolicy),	"wS"	} ,
	{ SMT_P101B,AC_GR,	MOFFSS(fddiSMTConnectionPolicy),"wS"	} ,
	{ SMT_P101D,AC_GR,	MOFFSS(fddiSMTTT_Notify),	"wS"	} ,
	{ SMT_P101E,AC_GR,	MOFFSS(fddiSMTStatRptPolicy),	"bB"	} ,
	{ SMT_P101F,AC_GR,	MOFFSS(fddiSMTTrace_MaxExpiration),"lL"	} ,
	{ SMT_P1020,AC_G,	MOFFSA(fddiSMTPORTIndexes),	"II"	} ,
	{ SMT_P1021,AC_G,	MOFFSS(fddiSMTMACIndexes),	"I"	} ,
	{ SMT_P1022,AC_G,	MOFFSS(fddiSMTBypassPresent),	"F"	} ,

	/* StatusGrp */
	{ SMT_P1028,AC_GROUP	} ,
	{ SMT_P1029,AC_G,	MOFFSS(fddiSMTECMState),	"E"	} ,
	{ SMT_P102A,AC_G,	MOFFSS(fddiSMTCF_State),	"E"	} ,
	{ SMT_P102C,AC_G,	MOFFSS(fddiSMTRemoteDisconnectFlag),"F"	} ,
	{ SMT_P102D,AC_G,	MOFFSS(fddiSMTStationStatus),	"E"	} ,
	{ SMT_P102E,AC_G,	MOFFSS(fddiSMTPeerWrapFlag),	"F"	} ,

	/* MIBOperationGrp */
	{ SMT_P1032,AC_GROUP	} ,
	{ SMT_P1033,AC_G,	MOFFSA(fddiSMTTimeStamp),"P"		} ,
	{ SMT_P1034,AC_G,	MOFFSA(fddiSMTTransitionTimeStamp),"P"	} ,
	/* NOTE : SMT_P1035 is already swapped ! SMT_P_SETCOUNT */
	{ SMT_P1035,AC_G,	MOFFSS(fddiSMTSetCount),"4P"		} ,
	{ SMT_P1036,AC_G,	MOFFSS(fddiSMTLastSetStationId),"8"	} ,

	{ SMT_P103C,AC_S,	0,				"wS"	} ,

	/*
	 * PRIVATE EXTENSIONS
	 * only accessible locally to get/set passwd
	 */
	{ SMT_P10F0,AC_GR,	MOFFSA(fddiPRPMFPasswd),	"8"	} ,
	{ SMT_P10F1,AC_GR,	MOFFSS(fddiPRPMFStation),	"8"	} ,
#ifdef	ESS
	{ SMT_P10F2,AC_GR,	MOFFSS(fddiESSPayload),		"lL"	} ,
	{ SMT_P10F3,AC_GR,	MOFFSS(fddiESSOverhead),	"lL"	} ,
	{ SMT_P10F4,AC_GR,	MOFFSS(fddiESSMaxTNeg),		"lL"	} ,
	{ SMT_P10F5,AC_GR,	MOFFSS(fddiESSMinSegmentSize),	"lL"	} ,
	{ SMT_P10F6,AC_GR,	MOFFSS(fddiESSCategory),	"lL"	} ,
	{ SMT_P10F7,AC_GR,	MOFFSS(fddiESSSynchTxMode),	"wS"	} ,
#endif
#ifdef	SBA
	{ SMT_P10F8,AC_GR,	MOFFSS(fddiSBACommand),		"bF"	} ,
	{ SMT_P10F9,AC_GR,	MOFFSS(fddiSBAAvailable),	"bF"	} ,
#endif
	/* MAC Attributes */
	{ SMT_P200A,AC_GROUP	} ,
	{ SMT_P200B,AC_G,	MOFFMS(fddiMACFrameStatusFunctions),"S"	} ,
	{ SMT_P200D,AC_G,	MOFFMS(fddiMACT_MaxCapabilitiy),"T"	} ,
	{ SMT_P200E,AC_G,	MOFFMS(fddiMACTVXCapabilitiy),"T"	} ,

	/* ConfigGrp */
	{ SMT_P2014,AC_GROUP	} ,
	{ SMT_P2016,AC_G,	MOFFMS(fddiMACAvailablePaths),	"B"	} ,
	{ SMT_P2017,AC_G,	MOFFMS(fddiMACCurrentPath),	"S"	} ,
	{ SMT_P2018,AC_G,	MOFFMS(fddiMACUpstreamNbr),	"A"	} ,
	{ SMT_P2019,AC_G,	MOFFMS(fddiMACDownstreamNbr),	"A"	} ,
	{ SMT_P201A,AC_G,	MOFFMS(fddiMACOldUpstreamNbr),	"A"	} ,
	{ SMT_P201B,AC_G,	MOFFMS(fddiMACOldDownstreamNbr),"A"	} ,
	{ SMT_P201D,AC_G,	MOFFMS(fddiMACDupAddressTest),	"E"	} ,
	{ SMT_P2020,AC_GR,	MOFFMS(fddiMACRequestedPaths),	"wS"	} ,
	{ SMT_P2021,AC_G,	MOFFMS(fddiMACDownstreamPORTType),"E"	} ,
	{ SMT_P2022,AC_G,	MOFFMS(fddiMACIndex),		"S"	} ,

	/* AddressGrp */
	{ SMT_P2028,AC_GROUP	} ,
	{ SMT_P2029,AC_G,	MOFFMS(fddiMACSMTAddress),	"A"	} ,

	/* OperationGrp */
	{ SMT_P2032,AC_GROUP	} ,
	{ SMT_P2033,AC_G,	MOFFMS(fddiMACT_Req),		"T"	} ,
	{ SMT_P2034,AC_G,	MOFFMS(fddiMACT_Neg),		"T"	} ,
	{ SMT_P2035,AC_G,	MOFFMS(fddiMACT_Max),		"T"	} ,
	{ SMT_P2036,AC_G,	MOFFMS(fddiMACTvxValue),	"T"	} ,
	{ SMT_P2038,AC_G,	MOFFMS(fddiMACT_Pri0),		"T"	} ,
	{ SMT_P2039,AC_G,	MOFFMS(fddiMACT_Pri1),		"T"	} ,
	{ SMT_P203A,AC_G,	MOFFMS(fddiMACT_Pri2),		"T"	} ,
	{ SMT_P203B,AC_G,	MOFFMS(fddiMACT_Pri3),		"T"	} ,
	{ SMT_P203C,AC_G,	MOFFMS(fddiMACT_Pri4),		"T"	} ,
	{ SMT_P203D,AC_G,	MOFFMS(fddiMACT_Pri5),		"T"	} ,
	{ SMT_P203E,AC_G,	MOFFMS(fddiMACT_Pri6),		"T"	} ,


	/* CountersGrp */
	{ SMT_P2046,AC_GROUP	} ,
	{ SMT_P2047,AC_G,	MOFFMS(fddiMACFrame_Ct),	"C"	} ,
	{ SMT_P2048,AC_G,	MOFFMS(fddiMACCopied_Ct),	"C"	} ,
	{ SMT_P2049,AC_G,	MOFFMS(fddiMACTransmit_Ct),	"C"	} ,
	{ SMT_P204A,AC_G,	MOFFMS(fddiMACToken_Ct),	"C"	} ,
	{ SMT_P2051,AC_G,	MOFFMS(fddiMACError_Ct),	"C"	} ,
	{ SMT_P2052,AC_G,	MOFFMS(fddiMACLost_Ct),		"C"	} ,
	{ SMT_P2053,AC_G,	MOFFMS(fddiMACTvxExpired_Ct),	"C"	} ,
	{ SMT_P2054,AC_G,	MOFFMS(fddiMACNotCopied_Ct),	"C"	} ,
	{ SMT_P2056,AC_G,	MOFFMS(fddiMACRingOp_Ct),	"C"	} ,

	/* FrameErrorConditionGrp */
	{ SMT_P205A,AC_GROUP	} ,
	{ SMT_P205F,AC_GR,	MOFFMS(fddiMACFrameErrorThreshold),"wS"	} ,
	{ SMT_P2060,AC_G,	MOFFMS(fddiMACFrameErrorRatio),	"S"	} ,

	/* NotCopiedConditionGrp */
	{ SMT_P2064,AC_GROUP	} ,
	{ SMT_P2067,AC_GR,	MOFFMS(fddiMACNotCopiedThreshold),"wS"	} ,
	{ SMT_P2069,AC_G,	MOFFMS(fddiMACNotCopiedRatio),	"S"	} ,

	/* StatusGrp */
	{ SMT_P206E,AC_GROUP	} ,
	{ SMT_P206F,AC_G,	MOFFMS(fddiMACRMTState),	"S"	} ,
	{ SMT_P2070,AC_G,	MOFFMS(fddiMACDA_Flag),	"F"	} ,
	{ SMT_P2071,AC_G,	MOFFMS(fddiMACUNDA_Flag),	"F"	} ,
	{ SMT_P2072,AC_G,	MOFFMS(fddiMACFrameErrorFlag),	"F"	} ,
	{ SMT_P2073,AC_G,	MOFFMS(fddiMACNotCopiedFlag),	"F"	} ,
	{ SMT_P2074,AC_G,	MOFFMS(fddiMACMA_UnitdataAvailable),"F"	} ,
	{ SMT_P2075,AC_G,	MOFFMS(fddiMACHardwarePresent),	"F"	} ,
	{ SMT_P2076,AC_GR,	MOFFMS(fddiMACMA_UnitdataEnable),"bF"	} ,

	/*
	 * PRIVATE EXTENSIONS
	 * only accessible locally to get/set TMIN
	 */
	{ SMT_P20F0,AC_NA						} ,
	{ SMT_P20F1,AC_GR,	MOFFMS(fddiMACT_Min),		"lT"	} ,

	/* Path Attributes */
	/*
	 * DON't swap 320B,320F,3210: they are already swapped in swap_para()
	 */
	{ SMT_P320A,AC_GROUP	} ,
	{ SMT_P320B,AC_G,	MOFFAS(fddiPATHIndex),		"r"	} ,
	{ SMT_P320F,AC_GR,	MOFFAS(fddiPATHSbaPayload),	"l4"	} ,
	{ SMT_P3210,AC_GR,	MOFFAS(fddiPATHSbaOverhead),	"l4"	} ,
	/* fddiPATHConfiguration */
	{ SMT_P3212,AC_G,	0,				""	} ,
	{ SMT_P3213,AC_GR,	MOFFAS(fddiPATHT_Rmode),	"lT"	} ,
	{ SMT_P3214,AC_GR,	MOFFAS(fddiPATHSbaAvailable),	"lL"	} ,
	{ SMT_P3215,AC_GR,	MOFFAS(fddiPATHTVXLowerBound),	"lT"	} ,
	{ SMT_P3216,AC_GR,	MOFFAS(fddiPATHT_MaxLowerBound),"lT"	} ,
	{ SMT_P3217,AC_GR,	MOFFAS(fddiPATHMaxT_Req),	"lT"	} ,

	/* Port Attributes */
	/* ConfigGrp */
	{ SMT_P400A,AC_GROUP	} ,
	{ SMT_P400C,AC_G,	MOFFPS(fddiPORTMy_Type),	"E"	} ,
	{ SMT_P400D,AC_G,	MOFFPS(fddiPORTNeighborType),	"E"	} ,
	{ SMT_P400E,AC_GR,	MOFFPS(fddiPORTConnectionPolicies),"bB"	} ,
	{ SMT_P400F,AC_G,	MOFFPS(fddiPORTMacIndicated),	"2"	} ,
	{ SMT_P4010,AC_G,	MOFFPS(fddiPORTCurrentPath),	"E"	} ,
	{ SMT_P4011,AC_GR,	MOFFPA(fddiPORTRequestedPaths),	"l4"	} ,
	{ SMT_P4012,AC_G,	MOFFPS(fddiPORTMACPlacement),	"S"	} ,
	{ SMT_P4013,AC_G,	MOFFPS(fddiPORTAvailablePaths),	"B"	} ,
	{ SMT_P4016,AC_G,	MOFFPS(fddiPORTPMDClass),	"E"	} ,
	{ SMT_P4017,AC_G,	MOFFPS(fddiPORTConnectionCapabilities),	"B"} ,
	{ SMT_P401D,AC_G,	MOFFPS(fddiPORTIndex),		"R"	} ,

	/* OperationGrp */
	{ SMT_P401E,AC_GROUP	} ,
	{ SMT_P401F,AC_GR,	MOFFPS(fddiPORTMaint_LS),	"wE"	} ,
	{ SMT_P4021,AC_G,	MOFFPS(fddiPORTBS_Flag),	"F"	} ,
	{ SMT_P4022,AC_G,	MOFFPS(fddiPORTPC_LS),		"E"	} ,

	/* ErrorCtrsGrp */
	{ SMT_P4028,AC_GROUP	} ,
	{ SMT_P4029,AC_G,	MOFFPS(fddiPORTEBError_Ct),	"C"	} ,
	{ SMT_P402A,AC_G,	MOFFPS(fddiPORTLCTFail_Ct),	"C"	} ,

	/* LerGrp */
	{ SMT_P4032,AC_GROUP	} ,
	{ SMT_P4033,AC_G,	MOFFPS(fddiPORTLer_Estimate),	"F"	} ,
	{ SMT_P4034,AC_G,	MOFFPS(fddiPORTLem_Reject_Ct),	"C"	} ,
	{ SMT_P4035,AC_G,	MOFFPS(fddiPORTLem_Ct),		"C"	} ,
	{ SMT_P403A,AC_GR,	MOFFPS(fddiPORTLer_Cutoff),	"bB"	} ,
	{ SMT_P403B,AC_GR,	MOFFPS(fddiPORTLer_Alarm),	"bB"	} ,

	/* StatusGrp */
	{ SMT_P403C,AC_GROUP	} ,
	{ SMT_P403D,AC_G,	MOFFPS(fddiPORTConnectState),	"E"	} ,
	{ SMT_P403E,AC_G,	MOFFPS(fddiPORTPCMStateX),	"E"	} ,
	{ SMT_P403F,AC_G,	MOFFPS(fddiPORTPC_Withhold),	"E"	} ,
	{ SMT_P4040,AC_G,	MOFFPS(fddiPORTLerFlag),	"F"	} ,
	{ SMT_P4041,AC_G,	MOFFPS(fddiPORTHardwarePresent),"F"	} ,

	{ SMT_P4046,AC_S,	0,				"wS"	} ,

	{ 0,	AC_GROUP	} ,
	{ 0 }
} ;

void smt_pmf_received_pack(struct s_smc *smc, SMbuf *mb, int local)
{
	struct smt_header	*sm ;
	SMbuf		*reply ;

	sm = smtod(mb,struct smt_header *) ;
	DB_SMT("SMT: processing PMF frame at %x len %d\n",sm,mb->sm_len) ;
#ifdef	DEBUG
	dump_smt(smc,sm,"PMF Received") ;
#endif
	/*
	 * Start the watchdog: It may be a long, long packet and
	 * maybe the watchdog occurs ...
	 */
	smt_start_watchdog(smc) ;

	if (sm->smt_class == SMT_PMF_GET ||
	    sm->smt_class == SMT_PMF_SET) {
		reply = smt_build_pmf_response(smc,sm,
			sm->smt_class == SMT_PMF_SET,local) ;
		if (reply) {
			sm = smtod(reply,struct smt_header *) ;
#ifdef	DEBUG
			dump_smt(smc,sm,"PMF Reply") ;
#endif
			smt_send_frame(smc,reply,FC_SMT_INFO,local) ;
		}
	}
}

static SMbuf *smt_build_pmf_response(struct s_smc *smc, struct smt_header *req,
				     int set, int local)
{
	SMbuf			*mb ;
	struct smt_header	*smt ;
	struct smt_para		*pa ;
	struct smt_p_reason	*res ;
	const struct s_p_tab	*pt ;
	int			len ;
	int			index ;
	int			idx_end ;
	int			error ;
	int			range ;
	SK_LOC_DECL(struct s_pcon,pcon) ;
	SK_LOC_DECL(struct s_pcon,set_pcon) ;

	/*
	 * build SMT header
	 */
	if (!(mb = smt_get_mbuf(smc)))
		return(mb) ;

	smt = smtod(mb, struct smt_header *) ;
	smt->smt_dest = req->smt_source ;	/* DA == source of request */
	smt->smt_class = req->smt_class ;	/* same class (GET/SET) */
	smt->smt_type = SMT_REPLY ;
	smt->smt_version = SMT_VID_2 ;
	smt->smt_tid = req->smt_tid ;		/* same TID */
	smt->smt_pad = 0 ;
	smt->smt_len = 0 ;

	/*
	 * setup parameter status
	 */
	pcon.pc_len = SMT_MAX_INFO_LEN ;	/* max para length */
	pcon.pc_err = 0 ;			/* no error */
	pcon.pc_badset = 0 ;			/* no bad set count */
	pcon.pc_p = (void *) (smt + 1) ;	/* paras start here */

	/*
	 * check authoriziation and set count
	 */
	error = 0 ;
	if (set) {
		if (!local && smt_authorize(smc,req))
			error = SMT_RDF_AUTHOR ;
		else if (smt_check_set_count(smc,req))
			pcon.pc_badset = SMT_RDF_BADSET ;
	}
	/*
	 * add reason code and all mandatory parameters
	 */
	res = (struct smt_p_reason *) pcon.pc_p ;
	smt_add_para(smc,&pcon,(u_short) SMT_P_REASON,0,0) ;
	smt_add_para(smc,&pcon,(u_short) SMT_P1033,0,0) ;
	/* update 1035 and 1036 later if set */
	set_pcon = pcon ;
	smt_add_para(smc,&pcon,(u_short) SMT_P1035,0,0) ;
	smt_add_para(smc,&pcon,(u_short) SMT_P1036,0,0) ;

	pcon.pc_err = error ;
	len = req->smt_len ;
	pa = (struct smt_para *) (req + 1) ;
	/*
	 * process list of paras
	 */
	while (!pcon.pc_err && len > 0 ) {
		if (((u_short)len < pa->p_len + PARA_LEN) || (pa->p_len & 3)) {
			pcon.pc_err = SMT_RDF_LENGTH ;
			break ;
		}

		if (((range = (pa->p_type & 0xf000)) == 0x2000) ||
			range == 0x3000 || range == 0x4000) {
			/*
			 * get index for PART,MAC ad PATH group
			 */
			index = *((u_char *)pa + PARA_LEN + 3) ;/* index */
			idx_end = index ;
			if (!set && (pa->p_len != 4)) {
				pcon.pc_err = SMT_RDF_LENGTH ;
				break ;
			}
			if (!index && !set) {
				switch (range) {
				case 0x2000 :
					index = INDEX_MAC ;
					idx_end = index - 1 + NUMMACS ;
					break ;
				case 0x3000 :
					index = INDEX_PATH ;
					idx_end = index - 1 + NUMPATHS ;
					break ;
				case 0x4000 :
					index = INDEX_PORT ;
					idx_end = index - 1 + NUMPHYS ;
#ifndef	CONCENTRATOR
					if (smc->s.sas == SMT_SAS)
						idx_end = INDEX_PORT ;
#endif
					break ;
				}
			}
		}
		else {
			/*
			 * smt group has no index
			 */
			if (!set && (pa->p_len != 0)) {
				pcon.pc_err = SMT_RDF_LENGTH ;
				break ;
			}
			index = 0 ;
			idx_end = 0 ;
		}
		while (index <= idx_end) {
			/*
			 * if group
			 *	add all paras of group
			 */
			pt = smt_get_ptab(pa->p_type) ;
			if (pt && pt->p_access == AC_GROUP && !set) {
				pt++ ;
				while (pt->p_access == AC_G ||
					pt->p_access == AC_GR) {
					smt_add_para(smc,&pcon,pt->p_num,
						index,local);
					pt++ ;
				}
			}
			/*
			 * ignore
			 *	AUTHORIZATION in get/set
			 *	SET COUNT in set
			 */
			else if (pa->p_type != SMT_P_AUTHOR &&
				 (!set || (pa->p_type != SMT_P1035))) {
				int	st ;
				if (pcon.pc_badset) {
					smt_add_para(smc,&pcon,pa->p_type,
						index,local) ;
				}
				else if (set) {
					st = smt_set_para(smc,pa,index,local,1);
					/*
					 * return para even if error
					 */
					smt_add_para(smc,&pcon,pa->p_type,
						index,local) ;
					pcon.pc_err = st ;
				}
				else {
					if (pt && pt->p_access == AC_S) {
						pcon.pc_err =
							SMT_RDF_ILLEGAL ;
					}
					smt_add_para(smc,&pcon,pa->p_type,
						index,local) ;
				}
			}
			if (pcon.pc_err)
				break ;
			index++ ;
		}
		len -= pa->p_len + PARA_LEN ;
		pa = (struct smt_para *) ((char *)pa + pa->p_len + PARA_LEN) ;
	}
	smt->smt_len = SMT_MAX_INFO_LEN - pcon.pc_len ;
	mb->sm_len = smt->smt_len + sizeof(struct smt_header) ;

	/* update reason code */
	res->rdf_reason = pcon.pc_badset ? pcon.pc_badset :
			pcon.pc_err ? pcon.pc_err : SMT_RDF_SUCCESS ;
	if (set && (res->rdf_reason == SMT_RDF_SUCCESS)) {
		/*
		 * increment set count
		 * set time stamp
		 * store station id of last set
		 */
		smc->mib.fddiSMTSetCount.count++ ;
		smt_set_timestamp(smc,smc->mib.fddiSMTSetCount.timestamp) ;
		smc->mib.fddiSMTLastSetStationId = req->smt_sid ;
		smt_add_para(smc,&set_pcon,(u_short) SMT_P1035,0,0) ;
		smt_add_para(smc,&set_pcon,(u_short) SMT_P1036,0,0) ;
	}
	return(mb) ;
}

static int smt_authorize(struct s_smc *smc, struct smt_header *sm)
{
	struct smt_para	*pa ;
	int		i ;
	char		*p ;

	/*
	 * check source station id if not zero
	 */
	p = (char *) &smc->mib.fddiPRPMFStation ;
	for (i = 0 ; i < 8 && !p[i] ; i++)
		;
	if (i != 8) {
		if (memcmp((char *) &sm->smt_sid,
			(char *) &smc->mib.fddiPRPMFStation,8))
			return(1) ;
	}
	/*
	 * check authoriziation parameter if passwd not zero
	 */
	p = (char *) smc->mib.fddiPRPMFPasswd ;
	for (i = 0 ; i < 8 && !p[i] ; i++)
		;
	if (i != 8) {
		pa = (struct smt_para *) sm_to_para(smc,sm,SMT_P_AUTHOR) ;
		if (!pa)
			return(1) ;
		if (pa->p_len != 8)
			return(1) ;
		if (memcmp((char *)(pa+1),(char *)smc->mib.fddiPRPMFPasswd,8))
			return(1) ;
	}
	return(0) ;
}

static int smt_check_set_count(struct s_smc *smc, struct smt_header *sm)
{
	struct smt_para	*pa ;
	struct smt_p_setcount	*sc ;

	pa = (struct smt_para *) sm_to_para(smc,sm,SMT_P1035) ;
	if (pa) {
		sc = (struct smt_p_setcount *) pa ;
		if ((smc->mib.fddiSMTSetCount.count != sc->count) ||
			memcmp((char *) smc->mib.fddiSMTSetCount.timestamp,
			(char *)sc->timestamp,8))
			return(1) ;
	}
	return(0) ;
}

void smt_add_para(struct s_smc *smc, struct s_pcon *pcon, u_short para,
		  int index, int local)
{