cfm.c
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上传日期:2013-04-10
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文件大小:16k
- /******************************************************************************
- *
- * (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.
- *
- ******************************************************************************/
- /*
- SMT CFM
- Configuration Management
- DAS with single MAC
- */
- /*
- * Hardware independant state machine implemantation
- * The following external SMT functions are referenced :
- *
- * queue_event()
- *
- * The following external HW dependant functions are referenced :
- * config_mux()
- *
- * The following HW dependant events are required :
- * NONE
- */
- #include "h/types.h"
- #include "h/fddi.h"
- #include "h/smc.h"
- #define KERNEL
- #include "h/smtstate.h"
- #ifndef lint
- static const char ID_sccs[] = "@(#)cfm.c 2.18 98/10/06 (C) SK " ;
- #endif
- /*
- * FSM Macros
- */
- #define AFLAG 0x10
- #define GO_STATE(x) (smc->mib.fddiSMTCF_State = (x)|AFLAG)
- #define ACTIONS_DONE() (smc->mib.fddiSMTCF_State &= ~AFLAG)
- #define ACTIONS(x) (x|AFLAG)
- #ifdef DEBUG
- /*
- * symbolic state names
- */
- static const char * const cfm_states[] = {
- "SC0_ISOLATED","CF1","CF2","CF3","CF4",
- "SC1_WRAP_A","SC2_WRAP_B","SC5_TRHU_B","SC7_WRAP_S",
- "SC9_C_WRAP_A","SC10_C_WRAP_B","SC11_C_WRAP_S","SC4_THRU_A"
- } ;
- /*
- * symbolic event names
- */
- static const char * const cfm_events[] = {
- "NONE","CF_LOOP_A","CF_LOOP_B","CF_JOIN_A","CF_JOIN_B"
- } ;
- #endif
- /*
- * map from state to downstream port type
- */
- static const u_char cf_to_ptype[] = {
- TNONE,TNONE,TNONE,TNONE,TNONE,
- TNONE,TB,TB,TS,
- TA,TB,TS,TB
- } ;
- /*
- * CEM port states
- */
- #define CEM_PST_DOWN 0
- #define CEM_PST_UP 1
- #define CEM_PST_HOLD 2
- /* define portstate array only for A and B port */
- /* Do this within the smc structure (use in multiple cards) */
- /*
- * all Globals are defined in smc.h
- * struct s_cfm
- */
- /*
- * function declarations
- */
- static void cfm_fsm() ;
- /*
- init CFM state machine
- clear all CFM vars and flags
- */
- void cfm_init(smc)
- struct s_smc *smc ;
- {
- smc->mib.fddiSMTCF_State = ACTIONS(SC0_ISOLATED) ;
- smc->r.rm_join = 0 ;
- smc->r.rm_loop = 0 ;
- smc->y[PA].scrub = 0 ;
- smc->y[PB].scrub = 0 ;
- smc->y[PA].cem_pst = CEM_PST_DOWN ;
- smc->y[PB].cem_pst = CEM_PST_DOWN ;
- }
- /* Some terms conditions used by the selection criteria */
- #define THRU_ENABLED(smc) (smc->y[PA].pc_mode != PM_TREE &&
- smc->y[PB].pc_mode != PM_TREE)
- /* Selection criteria for the ports */
- static void selection_criteria (smc,phy)
- struct s_smc *smc ;
- struct s_phy *phy ;
- {
- switch (phy->mib->fddiPORTMy_Type) {
- case TA:
- if ( !THRU_ENABLED(smc) && smc->y[PB].cf_join ) {
- phy->wc_flag = TRUE ;
- } else {
- phy->wc_flag = FALSE ;
- }
- break;
- case TB:
- /* take precedence over PA */
- phy->wc_flag = FALSE ;
- break;
- case TS:
- phy->wc_flag = FALSE ;
- break;
- case TM:
- phy->wc_flag = FALSE ;
- break;
- }
- }
- void all_selection_criteria (smc)
- struct s_smc *smc ;
- {
- struct s_phy *phy ;
- int p ;
- for ( p = 0,phy = smc->y ; p < NUMPHYS; p++, phy++ ) {
- /* Do the selection criteria */
- selection_criteria (smc,phy);
- }
- }
- static void cem_priv_state (smc, event)
- struct s_smc *smc ;
- int event ;
- /* State machine for private PORT states: used to optimize dual homing */
- {
- int np; /* Number of the port */
- int i;
- /* Do this only in a DAS */
- if (smc->s.sas != SMT_DAS )
- return ;
- np = event - CF_JOIN;
- if (np != PA && np != PB) {
- return ;
- }
- /* Change the port state according to the event (portnumber) */
- if (smc->y[np].cf_join) {
- smc->y[np].cem_pst = CEM_PST_UP ;
- } else if (!smc->y[np].wc_flag) {
- /* set the port to done only if it is not withheld */
- smc->y[np].cem_pst = CEM_PST_DOWN ;
- }
- /* Don't set an hold port to down */
- /* Check all ports of restart conditions */
- for (i = 0 ; i < 2 ; i ++ ) {
- /* Check all port for PORT is on hold and no withhold is done */
- if ( smc->y[i].cem_pst == CEM_PST_HOLD && !smc->y[i].wc_flag ) {
- smc->y[i].cem_pst = CEM_PST_DOWN;
- queue_event(smc,(int)(EVENT_PCM+i),PC_START) ;
- }
- if ( smc->y[i].cem_pst == CEM_PST_UP && smc->y[i].wc_flag ) {
- smc->y[i].cem_pst = CEM_PST_HOLD;
- queue_event(smc,(int)(EVENT_PCM+i),PC_START) ;
- }
- if ( smc->y[i].cem_pst == CEM_PST_DOWN && smc->y[i].wc_flag ) {
- /*
- * The port must be restarted when the wc_flag
- * will be reset. So set the port on hold.
- */
- smc->y[i].cem_pst = CEM_PST_HOLD;
- }
- }
- return ;
- }
- /*
- CFM state machine
- called by dispatcher
- do
- display state change
- process event
- until SM is stable
- */
- void cfm(smc,event)
- struct s_smc *smc ;
- int event ;
- {
- int state ; /* remember last state */
- int cond ;
- int oldstate ;
- /* We will do the following: */
- /* - compute the variable WC_Flag for every port (This is where */
- /* we can extend the requested path checking !!) */
- /* - do the old (SMT 6.2 like) state machine */
- /* - do the resulting station states */
- all_selection_criteria (smc);
- /* We will check now whether a state transition is allowed or not */
- /* - change the portstates */
- cem_priv_state (smc, event);
- oldstate = smc->mib.fddiSMTCF_State ;
- do {
- DB_CFM("CFM : state %s%s",
- (smc->mib.fddiSMTCF_State & AFLAG) ? "ACTIONS " : "",
- cfm_states[smc->mib.fddiSMTCF_State & ~AFLAG]) ;
- DB_CFM(" event %sn",cfm_events[event],0) ;
- state = smc->mib.fddiSMTCF_State ;
- cfm_fsm(smc,event) ;
- event = 0 ;
- } while (state != smc->mib.fddiSMTCF_State) ;
- #ifndef SLIM_SMT
- /*
- * check peer wrap condition
- */
- cond = FALSE ;
- if ( (smc->mib.fddiSMTCF_State == SC9_C_WRAP_A &&
- smc->y[PA].pc_mode == PM_PEER) ||
- (smc->mib.fddiSMTCF_State == SC10_C_WRAP_B &&
- smc->y[PB].pc_mode == PM_PEER) ||
- (smc->mib.fddiSMTCF_State == SC11_C_WRAP_S &&
- smc->y[PS].pc_mode == PM_PEER &&
- smc->y[PS].mib->fddiPORTNeighborType != TS ) ) {
- cond = TRUE ;
- }
- if (cond != smc->mib.fddiSMTPeerWrapFlag)
- smt_srf_event(smc,SMT_COND_SMT_PEER_WRAP,0,cond) ;
- #if 0
- /*
- * Don't send ever MAC_PATH_CHANGE events. Our MAC is hard-wired
- * to the primary path.
- */
- /*
- * path change
- */
- if (smc->mib.fddiSMTCF_State != oldstate) {
- smt_srf_event(smc,SMT_EVENT_MAC_PATH_CHANGE,INDEX_MAC,0) ;
- }
- #endif
- #endif /* no SLIM_SMT */
- /*
- * set MAC port type
- */
- smc->mib.m[MAC0].fddiMACDownstreamPORTType =
- cf_to_ptype[smc->mib.fddiSMTCF_State] ;
- cfm_state_change(smc,(int)smc->mib.fddiSMTCF_State) ;
- }
- /*
- process CFM event
- */
- /*ARGSUSED1*/
- static void cfm_fsm(smc,cmd)
- struct s_smc *smc ;
- int cmd ;
- {
- switch(smc->mib.fddiSMTCF_State) {
- case ACTIONS(SC0_ISOLATED) :
- smc->mib.p[PA].fddiPORTCurrentPath = MIB_PATH_ISOLATED ;
- smc->mib.p[PB].fddiPORTCurrentPath = MIB_PATH_ISOLATED ;
- smc->mib.p[PA].fddiPORTMACPlacement = 0 ;
- smc->mib.p[PB].fddiPORTMACPlacement = 0 ;
- smc->mib.fddiSMTStationStatus = MIB_SMT_STASTA_SEPA ;
- config_mux(smc,MUX_ISOLATE) ; /* configure PHY Mux */
- smc->r.rm_loop = FALSE ;
- smc->r.rm_join = FALSE ;
- queue_event(smc,EVENT_RMT,RM_JOIN) ;/* signal RMT */
- /* Don't do the WC-Flag changing here */
- ACTIONS_DONE() ;
- DB_CFMN(1,"CFM : %sn",cfm_states[smc->mib.fddiSMTCF_State],0) ;
- break;
- case SC0_ISOLATED :
- /*SC07*/
- /*SAS port can be PA or PB ! */
- if (smc->s.sas && (smc->y[PA].cf_join || smc->y[PA].cf_loop ||
- smc->y[PB].cf_join || smc->y[PB].cf_loop)) {
- GO_STATE(SC11_C_WRAP_S) ;
- break ;
- }
- /*SC01*/
- if ((smc->y[PA].cem_pst == CEM_PST_UP && smc->y[PA].cf_join &&
- !smc->y[PA].wc_flag) || smc->y[PA].cf_loop) {
- GO_STATE(SC9_C_WRAP_A) ;
- break ;
- }
- /*SC02*/
- if ((smc->y[PB].cem_pst == CEM_PST_UP && smc->y[PB].cf_join &&
- !smc->y[PB].wc_flag) || smc->y[PB].cf_loop) {
- GO_STATE(SC10_C_WRAP_B) ;
- break ;
- }
- break ;
- case ACTIONS(SC9_C_WRAP_A) :
- smc->mib.p[PA].fddiPORTCurrentPath = MIB_PATH_CONCATENATED ;
- smc->mib.p[PB].fddiPORTCurrentPath = MIB_PATH_ISOLATED ;
- smc->mib.p[PA].fddiPORTMACPlacement = INDEX_MAC ;
- smc->mib.p[PB].fddiPORTMACPlacement = 0 ;
- smc->mib.fddiSMTStationStatus = MIB_SMT_STASTA_CON ;
- config_mux(smc,MUX_WRAPA) ; /* configure PHY mux */
- if (smc->y[PA].cf_loop) {
- smc->r.rm_join = FALSE ;
- smc->r.rm_loop = TRUE ;
- queue_event(smc,EVENT_RMT,RM_LOOP) ;/* signal RMT */
- }
- if (smc->y[PA].cf_join) {
- smc->r.rm_loop = FALSE ;
- smc->r.rm_join = TRUE ;
- queue_event(smc,EVENT_RMT,RM_JOIN) ;/* signal RMT */
- }
- ACTIONS_DONE() ;
- DB_CFMN(1,"CFM : %sn",cfm_states[smc->mib.fddiSMTCF_State],0) ;
- break ;
- case SC9_C_WRAP_A :
- /*SC10*/
- if ( (smc->y[PA].wc_flag || !smc->y[PA].cf_join) &&
- !smc->y[PA].cf_loop ) {
- GO_STATE(SC0_ISOLATED) ;
- break ;
- }
- /*SC12*/
- else if ( (smc->y[PB].cf_loop && smc->y[PA].cf_join &&
- smc->y[PA].cem_pst == CEM_PST_UP) ||
- ((smc->y[PB].cf_loop ||
- (smc->y[PB].cf_join &&
- smc->y[PB].cem_pst == CEM_PST_UP)) &&
- (smc->y[PA].pc_mode == PM_TREE ||
- smc->y[PB].pc_mode == PM_TREE))) {
- smc->y[PA].scrub = TRUE ;
- GO_STATE(SC10_C_WRAP_B) ;
- break ;
- }
- /*SC14*/
- else if (!smc->s.attach_s &&
- smc->y[PA].cf_join &&
- smc->y[PA].cem_pst == CEM_PST_UP &&
- smc->y[PA].pc_mode == PM_PEER && smc->y[PB].cf_join &&
- smc->y[PB].cem_pst == CEM_PST_UP &&
- smc->y[PB].pc_mode == PM_PEER) {
- smc->y[PA].scrub = TRUE ;
- smc->y[PB].scrub = TRUE ;
- GO_STATE(SC4_THRU_A) ;
- break ;
- }
- /*SC15*/
- else if ( smc->s.attach_s &&
- smc->y[PA].cf_join &&
- smc->y[PA].cem_pst == CEM_PST_UP &&
- smc->y[PA].pc_mode == PM_PEER &&
- smc->y[PB].cf_join &&
- smc->y[PB].cem_pst == CEM_PST_UP &&
- smc->y[PB].pc_mode == PM_PEER) {
- smc->y[PA].scrub = TRUE ;
- smc->y[PB].scrub = TRUE ;
- GO_STATE(SC5_THRU_B) ;
- break ;
- }
- break ;
- case ACTIONS(SC10_C_WRAP_B) :
- smc->mib.p[PA].fddiPORTCurrentPath = MIB_PATH_ISOLATED ;
- smc->mib.p[PB].fddiPORTCurrentPath = MIB_PATH_CONCATENATED ;
- smc->mib.p[PA].fddiPORTMACPlacement = 0 ;
- smc->mib.p[PB].fddiPORTMACPlacement = INDEX_MAC ;
- smc->mib.fddiSMTStationStatus = MIB_SMT_STASTA_CON ;
- config_mux(smc,MUX_WRAPB) ; /* configure PHY mux */
- if (smc->y[PB].cf_loop) {
- smc->r.rm_join = FALSE ;
- smc->r.rm_loop = TRUE ;
- queue_event(smc,EVENT_RMT,RM_LOOP) ;/* signal RMT */
- }
- if (smc->y[PB].cf_join) {
- smc->r.rm_loop = FALSE ;
- smc->r.rm_join = TRUE ;
- queue_event(smc,EVENT_RMT,RM_JOIN) ;/* signal RMT */
- }
- ACTIONS_DONE() ;
- DB_CFMN(1,"CFM : %sn",cfm_states[smc->mib.fddiSMTCF_State],0) ;
- break ;
- case SC10_C_WRAP_B :
- /*SC20*/
- if ( !smc->y[PB].cf_join && !smc->y[PB].cf_loop ) {
- GO_STATE(SC0_ISOLATED) ;
- break ;
- }
- /*SC21*/
- else if ( smc->y[PA].cf_loop && smc->y[PA].pc_mode == PM_PEER &&
- smc->y[PB].cf_join && smc->y[PB].pc_mode == PM_PEER) {
- smc->y[PB].scrub = TRUE ;
- GO_STATE(SC9_C_WRAP_A) ;
- break ;
- }
- /*SC24*/
- else if (!smc->s.attach_s &&
- smc->y[PA].cf_join && smc->y[PA].pc_mode == PM_PEER &&
- smc->y[PB].cf_join && smc->y[PB].pc_mode == PM_PEER) {
- smc->y[PA].scrub = TRUE ;
- smc->y[PB].scrub = TRUE ;
- GO_STATE(SC4_THRU_A) ;
- break ;
- }
- /*SC25*/
- else if ( smc->s.attach_s &&
- smc->y[PA].cf_join && smc->y[PA].pc_mode == PM_PEER &&
- smc->y[PB].cf_join && smc->y[PB].pc_mode == PM_PEER) {
- smc->y[PA].scrub = TRUE ;
- smc->y[PB].scrub = TRUE ;
- GO_STATE(SC5_THRU_B) ;
- break ;
- }
- break ;
- case ACTIONS(SC4_THRU_A) :
- smc->mib.p[PA].fddiPORTCurrentPath = MIB_PATH_THRU ;
- smc->mib.p[PB].fddiPORTCurrentPath = MIB_PATH_THRU ;
- smc->mib.p[PA].fddiPORTMACPlacement = 0 ;
- smc->mib.p[PB].fddiPORTMACPlacement = INDEX_MAC ;
- smc->mib.fddiSMTStationStatus = MIB_SMT_STASTA_THRU ;
- config_mux(smc,MUX_THRUA) ; /* configure PHY mux */
- smc->r.rm_loop = FALSE ;
- smc->r.rm_join = TRUE ;
- queue_event(smc,EVENT_RMT,RM_JOIN) ;/* signal RMT */
- ACTIONS_DONE() ;
- DB_CFMN(1,"CFM : %sn",cfm_states[smc->mib.fddiSMTCF_State],0) ;
- break ;
- case SC4_THRU_A :
- /*SC41*/
- if (smc->y[PB].wc_flag || !smc->y[PB].cf_join) {
- smc->y[PA].scrub = TRUE ;
- GO_STATE(SC9_C_WRAP_A) ;
- break ;
- }
- /*SC42*/
- else if (!smc->y[PA].cf_join || smc->y[PA].wc_flag) {
- smc->y[PB].scrub = TRUE ;
- GO_STATE(SC10_C_WRAP_B) ;
- break ;
- }
- /*SC45*/
- else if (smc->s.attach_s) {
- smc->y[PB].scrub = TRUE ;
- GO_STATE(SC5_THRU_B) ;
- break ;
- }
- break ;
- case ACTIONS(SC5_THRU_B) :
- smc->mib.p[PA].fddiPORTCurrentPath = MIB_PATH_THRU ;
- smc->mib.p[PB].fddiPORTCurrentPath = MIB_PATH_THRU ;
- smc->mib.p[PA].fddiPORTMACPlacement = INDEX_MAC ;
- smc->mib.p[PB].fddiPORTMACPlacement = 0 ;
- smc->mib.fddiSMTStationStatus = MIB_SMT_STASTA_THRU ;
- config_mux(smc,MUX_THRUB) ; /* configure PHY mux */
- smc->r.rm_loop = FALSE ;
- smc->r.rm_join = TRUE ;
- queue_event(smc,EVENT_RMT,RM_JOIN) ;/* signal RMT */
- ACTIONS_DONE() ;
- DB_CFMN(1,"CFM : %sn",cfm_states[smc->mib.fddiSMTCF_State],0) ;
- break ;
- case SC5_THRU_B :
- /*SC51*/
- if (!smc->y[PB].cf_join || smc->y[PB].wc_flag) {
- smc->y[PA].scrub = TRUE ;
- GO_STATE(SC9_C_WRAP_A) ;
- break ;
- }
- /*SC52*/
- else if (!smc->y[PA].cf_join || smc->y[PA].wc_flag) {
- smc->y[PB].scrub = TRUE ;
- GO_STATE(SC10_C_WRAP_B) ;
- break ;
- }
- /*SC54*/
- else if (!smc->s.attach_s) {
- smc->y[PA].scrub = TRUE ;
- GO_STATE(SC4_THRU_A) ;
- break ;
- }
- break ;
- case ACTIONS(SC11_C_WRAP_S) :
- smc->mib.p[PS].fddiPORTCurrentPath = MIB_PATH_CONCATENATED ;
- smc->mib.p[PS].fddiPORTMACPlacement = INDEX_MAC ;
- smc->mib.fddiSMTStationStatus = MIB_SMT_STASTA_CON ;
- config_mux(smc,MUX_WRAPS) ; /* configure PHY mux */
- if (smc->y[PA].cf_loop || smc->y[PB].cf_loop) {
- smc->r.rm_join = FALSE ;
- smc->r.rm_loop = TRUE ;
- queue_event(smc,EVENT_RMT,RM_LOOP) ;/* signal RMT */
- }
- if (smc->y[PA].cf_join || smc->y[PB].cf_join) {
- smc->r.rm_loop = FALSE ;
- smc->r.rm_join = TRUE ;
- queue_event(smc,EVENT_RMT,RM_JOIN) ;/* signal RMT */
- }
- ACTIONS_DONE() ;
- DB_CFMN(1,"CFM : %sn",cfm_states[smc->mib.fddiSMTCF_State],0) ;
- break ;
- case SC11_C_WRAP_S :
- /*SC70*/
- if ( !smc->y[PA].cf_join && !smc->y[PA].cf_loop &&
- !smc->y[PB].cf_join && !smc->y[PB].cf_loop) {
- GO_STATE(SC0_ISOLATED) ;
- break ;
- }
- break ;
- default:
- SMT_PANIC(smc,SMT_E0106, SMT_E0106_MSG) ;
- break;
- }
- }
- /*
- * get MAC's input Port
- * return :
- * PA or PB
- */
- int cfm_get_mac_input(smc)
- struct s_smc *smc ;
- {
- return((smc->mib.fddiSMTCF_State == SC10_C_WRAP_B ||
- smc->mib.fddiSMTCF_State == SC5_THRU_B) ? PB : PA) ;
- }
- /*
- * get MAC's output Port
- * return :
- * PA or PB
- */
- int cfm_get_mac_output(smc)
- struct s_smc *smc ;
- {
- return((smc->mib.fddiSMTCF_State == SC10_C_WRAP_B ||
- smc->mib.fddiSMTCF_State == SC4_THRU_A) ? PB : PA) ;
- }
- static char path_iso[] = {
- 0,0, 0,RES_PORT, 0,PA + INDEX_PORT, 0,PATH_ISO,
- 0,0, 0,RES_MAC, 0,INDEX_MAC, 0,PATH_ISO,
- 0,0, 0,RES_PORT, 0,PB + INDEX_PORT, 0,PATH_ISO
- } ;
- static char path_wrap_a[] = {
- 0,0, 0,RES_PORT, 0,PA + INDEX_PORT, 0,PATH_PRIM,
- 0,0, 0,RES_MAC, 0,INDEX_MAC, 0,PATH_PRIM,
- 0,0, 0,RES_PORT, 0,PB + INDEX_PORT, 0,PATH_ISO
- } ;
- static char path_wrap_b[] = {
- 0,0, 0,RES_PORT, 0,PB + INDEX_PORT, 0,PATH_PRIM,
- 0,0, 0,RES_MAC, 0,INDEX_MAC, 0,PATH_PRIM,
- 0,0, 0,RES_PORT, 0,PA + INDEX_PORT, 0,PATH_ISO
- } ;
- static char path_thru[] = {
- 0,0, 0,RES_PORT, 0,PA + INDEX_PORT, 0,PATH_PRIM,
- 0,0, 0,RES_MAC, 0,INDEX_MAC, 0,PATH_PRIM,
- 0,0, 0,RES_PORT, 0,PB + INDEX_PORT, 0,PATH_PRIM
- } ;
- static char path_wrap_s[] = {
- 0,0, 0,RES_PORT, 0,PS + INDEX_PORT, 0,PATH_PRIM,
- 0,0, 0,RES_MAC, 0,INDEX_MAC, 0,PATH_PRIM,
- } ;
- static char path_iso_s[] = {
- 0,0, 0,RES_PORT, 0,PS + INDEX_PORT, 0,PATH_ISO,
- 0,0, 0,RES_MAC, 0,INDEX_MAC, 0,PATH_ISO,
- } ;
- int cem_build_path(smc,to,path_index)
- struct s_smc *smc ;
- char *to ;
- int path_index ;
- {
- char *path ;
- int len ;
- switch (smc->mib.fddiSMTCF_State) {
- default :
- case SC0_ISOLATED :
- path = smc->s.sas ? path_iso_s : path_iso ;
- len = smc->s.sas ? sizeof(path_iso_s) : sizeof(path_iso) ;
- break ;
- case SC9_C_WRAP_A :
- path = path_wrap_a ;
- len = sizeof(path_wrap_a) ;
- break ;
- case SC10_C_WRAP_B :
- path = path_wrap_b ;
- len = sizeof(path_wrap_b) ;
- break ;
- case SC4_THRU_A :
- path = path_thru ;
- len = sizeof(path_thru) ;
- break ;
- case SC11_C_WRAP_S :
- path = path_wrap_s ;
- len = sizeof(path_wrap_s) ;
- break ;
- }
- memcpy(to,path,len) ;
- LINT_USE(path_index);
- return(len) ;
- }