forked from Minki/linux
628 lines
16 KiB
C
628 lines
16 KiB
C
/******************************************************************************
|
|
*
|
|
* (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 independent state machine implemantation
|
|
* The following external SMT functions are referenced :
|
|
*
|
|
* queue_event()
|
|
*
|
|
* The following external HW dependent functions are referenced :
|
|
* config_mux()
|
|
*
|
|
* The following HW dependent 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 unsigned 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(struct s_smc *smc, int cmd);
|
|
|
|
/*
|
|
init CFM state machine
|
|
clear all CFM vars and flags
|
|
*/
|
|
void cfm_init(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 (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(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(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(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 %s\n",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(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 : %s\n",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 : %s\n",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 : %s\n",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 : %s\n",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 : %s\n",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 : %s\n",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(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(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(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) ;
|
|
}
|