655 lines
16 KiB
C
655 lines
16 KiB
C
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/******************************************************************************
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*
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* (C)Copyright 1998,1999 SysKonnect,
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* a business unit of Schneider & Koch & Co. Datensysteme GmbH.
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*
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* See the file "skfddi.c" for further information.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* The information in this file is provided "AS IS" without warranty.
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*
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******************************************************************************/
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/*
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SMT RMT
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Ring Management
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*/
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/*
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* Hardware independent state machine implemantation
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* The following external SMT functions are referenced :
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*
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* queue_event()
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* smt_timer_start()
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* smt_timer_stop()
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*
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* The following external HW dependent functions are referenced :
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* sm_ma_control()
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* sm_mac_check_beacon_claim()
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*
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* The following HW dependent events are required :
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* RM_RING_OP
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* RM_RING_NON_OP
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* RM_MY_BEACON
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* RM_OTHER_BEACON
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* RM_MY_CLAIM
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* RM_TRT_EXP
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* RM_VALID_CLAIM
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*
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*/
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#include "h/types.h"
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#include "h/fddi.h"
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#include "h/smc.h"
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#define KERNEL
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#include "h/smtstate.h"
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#ifndef lint
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static const char ID_sccs[] = "@(#)rmt.c 2.13 99/07/02 (C) SK " ;
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#endif
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/*
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* FSM Macros
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*/
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#define AFLAG 0x10
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#define GO_STATE(x) (smc->mib.m[MAC0].fddiMACRMTState = (x)|AFLAG)
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#define ACTIONS_DONE() (smc->mib.m[MAC0].fddiMACRMTState &= ~AFLAG)
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#define ACTIONS(x) (x|AFLAG)
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#define RM0_ISOLATED 0
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#define RM1_NON_OP 1 /* not operational */
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#define RM2_RING_OP 2 /* ring operational */
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#define RM3_DETECT 3 /* detect dupl addresses */
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#define RM4_NON_OP_DUP 4 /* dupl. addr detected */
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#define RM5_RING_OP_DUP 5 /* ring oper. with dupl. addr */
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#define RM6_DIRECTED 6 /* sending directed beacons */
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#define RM7_TRACE 7 /* trace initiated */
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#ifdef DEBUG
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/*
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* symbolic state names
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*/
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static const char * const rmt_states[] = {
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"RM0_ISOLATED","RM1_NON_OP","RM2_RING_OP","RM3_DETECT",
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"RM4_NON_OP_DUP","RM5_RING_OP_DUP","RM6_DIRECTED",
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"RM7_TRACE"
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} ;
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/*
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* symbolic event names
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*/
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static const char * const rmt_events[] = {
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"NONE","RM_RING_OP","RM_RING_NON_OP","RM_MY_BEACON",
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"RM_OTHER_BEACON","RM_MY_CLAIM","RM_TRT_EXP","RM_VALID_CLAIM",
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"RM_JOIN","RM_LOOP","RM_DUP_ADDR","RM_ENABLE_FLAG",
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"RM_TIMEOUT_NON_OP","RM_TIMEOUT_T_STUCK",
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"RM_TIMEOUT_ANNOUNCE","RM_TIMEOUT_T_DIRECT",
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"RM_TIMEOUT_D_MAX","RM_TIMEOUT_POLL","RM_TX_STATE_CHANGE"
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} ;
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#endif
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/*
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* Globals
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* in struct s_rmt
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*/
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/*
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* function declarations
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*/
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static void rmt_fsm(struct s_smc *smc, int cmd);
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static void start_rmt_timer0(struct s_smc *smc, u_long value, int event);
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static void start_rmt_timer1(struct s_smc *smc, u_long value, int event);
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static void start_rmt_timer2(struct s_smc *smc, u_long value, int event);
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static void stop_rmt_timer0(struct s_smc *smc);
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static void stop_rmt_timer1(struct s_smc *smc);
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static void stop_rmt_timer2(struct s_smc *smc);
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static void rmt_dup_actions(struct s_smc *smc);
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static void rmt_reinsert_actions(struct s_smc *smc);
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static void rmt_leave_actions(struct s_smc *smc);
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static void rmt_new_dup_actions(struct s_smc *smc);
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#ifndef SUPERNET_3
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extern void restart_trt_for_dbcn() ;
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#endif /*SUPERNET_3*/
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/*
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init RMT state machine
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clear all RMT vars and flags
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*/
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void rmt_init(struct s_smc *smc)
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{
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smc->mib.m[MAC0].fddiMACRMTState = ACTIONS(RM0_ISOLATED) ;
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smc->r.dup_addr_test = DA_NONE ;
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smc->r.da_flag = 0 ;
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smc->mib.m[MAC0].fddiMACMA_UnitdataAvailable = FALSE ;
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smc->r.sm_ma_avail = FALSE ;
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smc->r.loop_avail = 0 ;
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smc->r.bn_flag = 0 ;
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smc->r.jm_flag = 0 ;
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smc->r.no_flag = TRUE ;
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}
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/*
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RMT state machine
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called by dispatcher
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do
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display state change
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process event
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until SM is stable
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*/
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void rmt(struct s_smc *smc, int event)
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{
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int state ;
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do {
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DB_RMT("RMT : state %s%s",
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(smc->mib.m[MAC0].fddiMACRMTState & AFLAG) ? "ACTIONS " : "",
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rmt_states[smc->mib.m[MAC0].fddiMACRMTState & ~AFLAG]) ;
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DB_RMT(" event %s\n",rmt_events[event],0) ;
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state = smc->mib.m[MAC0].fddiMACRMTState ;
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rmt_fsm(smc,event) ;
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event = 0 ;
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} while (state != smc->mib.m[MAC0].fddiMACRMTState) ;
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rmt_state_change(smc,(int)smc->mib.m[MAC0].fddiMACRMTState) ;
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}
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/*
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process RMT event
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*/
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static void rmt_fsm(struct s_smc *smc, int cmd)
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{
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/*
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* RM00-RM70 : from all states
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*/
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if (!smc->r.rm_join && !smc->r.rm_loop &&
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smc->mib.m[MAC0].fddiMACRMTState != ACTIONS(RM0_ISOLATED) &&
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smc->mib.m[MAC0].fddiMACRMTState != RM0_ISOLATED) {
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RS_SET(smc,RS_NORINGOP) ;
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rmt_indication(smc,0) ;
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GO_STATE(RM0_ISOLATED) ;
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return ;
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}
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switch(smc->mib.m[MAC0].fddiMACRMTState) {
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case ACTIONS(RM0_ISOLATED) :
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stop_rmt_timer0(smc) ;
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stop_rmt_timer1(smc) ;
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stop_rmt_timer2(smc) ;
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/*
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* Disable MAC.
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*/
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sm_ma_control(smc,MA_OFFLINE) ;
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smc->mib.m[MAC0].fddiMACMA_UnitdataAvailable = FALSE ;
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smc->r.loop_avail = FALSE ;
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smc->r.sm_ma_avail = FALSE ;
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smc->r.no_flag = TRUE ;
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DB_RMTN(1,"RMT : ISOLATED\n",0,0) ;
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ACTIONS_DONE() ;
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break ;
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case RM0_ISOLATED :
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/*RM01*/
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if (smc->r.rm_join || smc->r.rm_loop) {
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/*
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* According to the standard the MAC must be reset
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* here. The FORMAC will be initialized and Claim
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* and Beacon Frames will be uploaded to the MAC.
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* So any change of Treq will take effect NOW.
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*/
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sm_ma_control(smc,MA_RESET) ;
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GO_STATE(RM1_NON_OP) ;
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break ;
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}
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break ;
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case ACTIONS(RM1_NON_OP) :
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start_rmt_timer0(smc,smc->s.rmt_t_non_op,RM_TIMEOUT_NON_OP) ;
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stop_rmt_timer1(smc) ;
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stop_rmt_timer2(smc) ;
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sm_ma_control(smc,MA_BEACON) ;
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DB_RMTN(1,"RMT : RING DOWN\n",0,0) ;
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RS_SET(smc,RS_NORINGOP) ;
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smc->r.sm_ma_avail = FALSE ;
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rmt_indication(smc,0) ;
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ACTIONS_DONE() ;
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break ;
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case RM1_NON_OP :
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/*RM12*/
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if (cmd == RM_RING_OP) {
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RS_SET(smc,RS_RINGOPCHANGE) ;
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GO_STATE(RM2_RING_OP) ;
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break ;
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}
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/*RM13*/
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else if (cmd == RM_TIMEOUT_NON_OP) {
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smc->r.bn_flag = FALSE ;
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smc->r.no_flag = TRUE ;
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GO_STATE(RM3_DETECT) ;
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break ;
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}
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break ;
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case ACTIONS(RM2_RING_OP) :
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stop_rmt_timer0(smc) ;
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stop_rmt_timer1(smc) ;
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stop_rmt_timer2(smc) ;
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smc->r.no_flag = FALSE ;
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if (smc->r.rm_loop)
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smc->r.loop_avail = TRUE ;
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if (smc->r.rm_join) {
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smc->r.sm_ma_avail = TRUE ;
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if (smc->mib.m[MAC0].fddiMACMA_UnitdataEnable)
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smc->mib.m[MAC0].fddiMACMA_UnitdataAvailable = TRUE ;
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else
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smc->mib.m[MAC0].fddiMACMA_UnitdataAvailable = FALSE ;
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}
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DB_RMTN(1,"RMT : RING UP\n",0,0) ;
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RS_CLEAR(smc,RS_NORINGOP) ;
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RS_SET(smc,RS_RINGOPCHANGE) ;
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rmt_indication(smc,1) ;
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smt_stat_counter(smc,0) ;
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ACTIONS_DONE() ;
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break ;
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case RM2_RING_OP :
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/*RM21*/
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if (cmd == RM_RING_NON_OP) {
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smc->mib.m[MAC0].fddiMACMA_UnitdataAvailable = FALSE ;
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smc->r.loop_avail = FALSE ;
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RS_SET(smc,RS_RINGOPCHANGE) ;
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GO_STATE(RM1_NON_OP) ;
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break ;
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}
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/*RM22a*/
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else if (cmd == RM_ENABLE_FLAG) {
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if (smc->mib.m[MAC0].fddiMACMA_UnitdataEnable)
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smc->mib.m[MAC0].fddiMACMA_UnitdataAvailable = TRUE ;
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else
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smc->mib.m[MAC0].fddiMACMA_UnitdataAvailable = FALSE ;
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}
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/*RM25*/
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else if (smc->r.dup_addr_test == DA_FAILED) {
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smc->mib.m[MAC0].fddiMACMA_UnitdataAvailable = FALSE ;
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smc->r.loop_avail = FALSE ;
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smc->r.da_flag = TRUE ;
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GO_STATE(RM5_RING_OP_DUP) ;
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break ;
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}
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break ;
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case ACTIONS(RM3_DETECT) :
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start_rmt_timer0(smc,smc->s.mac_d_max*2,RM_TIMEOUT_D_MAX) ;
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start_rmt_timer1(smc,smc->s.rmt_t_stuck,RM_TIMEOUT_T_STUCK) ;
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start_rmt_timer2(smc,smc->s.rmt_t_poll,RM_TIMEOUT_POLL) ;
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sm_mac_check_beacon_claim(smc) ;
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DB_RMTN(1,"RMT : RM3_DETECT\n",0,0) ;
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ACTIONS_DONE() ;
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break ;
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case RM3_DETECT :
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if (cmd == RM_TIMEOUT_POLL) {
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start_rmt_timer2(smc,smc->s.rmt_t_poll,RM_TIMEOUT_POLL);
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sm_mac_check_beacon_claim(smc) ;
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break ;
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}
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if (cmd == RM_TIMEOUT_D_MAX) {
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smc->r.timer0_exp = TRUE ;
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}
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/*
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*jd(22-Feb-1999)
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* We need a time ">= 2*mac_d_max" since we had finished
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* Claim or Beacon state. So we will restart timer0 at
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* every state change.
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*/
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if (cmd == RM_TX_STATE_CHANGE) {
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start_rmt_timer0(smc,
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smc->s.mac_d_max*2,
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RM_TIMEOUT_D_MAX) ;
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}
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/*RM32*/
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if (cmd == RM_RING_OP) {
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GO_STATE(RM2_RING_OP) ;
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break ;
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}
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/*RM33a*/
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else if ((cmd == RM_MY_BEACON || cmd == RM_OTHER_BEACON)
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&& smc->r.bn_flag) {
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smc->r.bn_flag = FALSE ;
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}
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/*RM33b*/
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else if (cmd == RM_TRT_EXP && !smc->r.bn_flag) {
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int tx ;
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/*
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* set bn_flag only if in state T4 or T5:
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* only if we're the beaconer should we start the
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* trace !
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*/
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if ((tx = sm_mac_get_tx_state(smc)) == 4 || tx == 5) {
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DB_RMTN(2,"RMT : DETECT && TRT_EXPIRED && T4/T5\n",0,0);
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smc->r.bn_flag = TRUE ;
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/*
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* If one of the upstream stations beaconed
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* and the link to the upstream neighbor is
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* lost we need to restart the stuck timer to
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* check the "stuck beacon" condition.
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*/
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start_rmt_timer1(smc,smc->s.rmt_t_stuck,
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RM_TIMEOUT_T_STUCK) ;
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}
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/*
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* We do NOT need to clear smc->r.bn_flag in case of
|
||
|
|
* not being in state T4 or T5, because the flag
|
||
|
|
* must be cleared in order to get in this condition.
|
||
|
|
*/
|
||
|
|
|
||
|
|
DB_RMTN(2,
|
||
|
|
"RMT : sm_mac_get_tx_state() = %d (bn_flag = %d)\n",
|
||
|
|
tx,smc->r.bn_flag) ;
|
||
|
|
}
|
||
|
|
/*RM34a*/
|
||
|
|
else if (cmd == RM_MY_CLAIM && smc->r.timer0_exp) {
|
||
|
|
rmt_new_dup_actions(smc) ;
|
||
|
|
GO_STATE(RM4_NON_OP_DUP) ;
|
||
|
|
break ;
|
||
|
|
}
|
||
|
|
/*RM34b*/
|
||
|
|
else if (cmd == RM_MY_BEACON && smc->r.timer0_exp) {
|
||
|
|
rmt_new_dup_actions(smc) ;
|
||
|
|
GO_STATE(RM4_NON_OP_DUP) ;
|
||
|
|
break ;
|
||
|
|
}
|
||
|
|
/*RM34c*/
|
||
|
|
else if (cmd == RM_VALID_CLAIM) {
|
||
|
|
rmt_new_dup_actions(smc) ;
|
||
|
|
GO_STATE(RM4_NON_OP_DUP) ;
|
||
|
|
break ;
|
||
|
|
}
|
||
|
|
/*RM36*/
|
||
|
|
else if (cmd == RM_TIMEOUT_T_STUCK &&
|
||
|
|
smc->r.rm_join && smc->r.bn_flag) {
|
||
|
|
GO_STATE(RM6_DIRECTED) ;
|
||
|
|
break ;
|
||
|
|
}
|
||
|
|
break ;
|
||
|
|
case ACTIONS(RM4_NON_OP_DUP) :
|
||
|
|
start_rmt_timer0(smc,smc->s.rmt_t_announce,RM_TIMEOUT_ANNOUNCE);
|
||
|
|
start_rmt_timer1(smc,smc->s.rmt_t_stuck,RM_TIMEOUT_T_STUCK) ;
|
||
|
|
start_rmt_timer2(smc,smc->s.rmt_t_poll,RM_TIMEOUT_POLL) ;
|
||
|
|
sm_mac_check_beacon_claim(smc) ;
|
||
|
|
DB_RMTN(1,"RMT : RM4_NON_OP_DUP\n",0,0) ;
|
||
|
|
ACTIONS_DONE() ;
|
||
|
|
break ;
|
||
|
|
case RM4_NON_OP_DUP :
|
||
|
|
if (cmd == RM_TIMEOUT_POLL) {
|
||
|
|
start_rmt_timer2(smc,smc->s.rmt_t_poll,RM_TIMEOUT_POLL);
|
||
|
|
sm_mac_check_beacon_claim(smc) ;
|
||
|
|
break ;
|
||
|
|
}
|
||
|
|
/*RM41*/
|
||
|
|
if (!smc->r.da_flag) {
|
||
|
|
GO_STATE(RM1_NON_OP) ;
|
||
|
|
break ;
|
||
|
|
}
|
||
|
|
/*RM44a*/
|
||
|
|
else if ((cmd == RM_MY_BEACON || cmd == RM_OTHER_BEACON) &&
|
||
|
|
smc->r.bn_flag) {
|
||
|
|
smc->r.bn_flag = FALSE ;
|
||
|
|
}
|
||
|
|
/*RM44b*/
|
||
|
|
else if (cmd == RM_TRT_EXP && !smc->r.bn_flag) {
|
||
|
|
int tx ;
|
||
|
|
/*
|
||
|
|
* set bn_flag only if in state T4 or T5:
|
||
|
|
* only if we're the beaconer should we start the
|
||
|
|
* trace !
|
||
|
|
*/
|
||
|
|
if ((tx = sm_mac_get_tx_state(smc)) == 4 || tx == 5) {
|
||
|
|
DB_RMTN(2,"RMT : NOPDUP && TRT_EXPIRED && T4/T5\n",0,0);
|
||
|
|
smc->r.bn_flag = TRUE ;
|
||
|
|
/*
|
||
|
|
* If one of the upstream stations beaconed
|
||
|
|
* and the link to the upstream neighbor is
|
||
|
|
* lost we need to restart the stuck timer to
|
||
|
|
* check the "stuck beacon" condition.
|
||
|
|
*/
|
||
|
|
start_rmt_timer1(smc,smc->s.rmt_t_stuck,
|
||
|
|
RM_TIMEOUT_T_STUCK) ;
|
||
|
|
}
|
||
|
|
/*
|
||
|
|
* We do NOT need to clear smc->r.bn_flag in case of
|
||
|
|
* not being in state T4 or T5, because the flag
|
||
|
|
* must be cleared in order to get in this condition.
|
||
|
|
*/
|
||
|
|
|
||
|
|
DB_RMTN(2,
|
||
|
|
"RMT : sm_mac_get_tx_state() = %d (bn_flag = %d)\n",
|
||
|
|
tx,smc->r.bn_flag) ;
|
||
|
|
}
|
||
|
|
/*RM44c*/
|
||
|
|
else if (cmd == RM_TIMEOUT_ANNOUNCE && !smc->r.bn_flag) {
|
||
|
|
rmt_dup_actions(smc) ;
|
||
|
|
}
|
||
|
|
/*RM45*/
|
||
|
|
else if (cmd == RM_RING_OP) {
|
||
|
|
smc->r.no_flag = FALSE ;
|
||
|
|
GO_STATE(RM5_RING_OP_DUP) ;
|
||
|
|
break ;
|
||
|
|
}
|
||
|
|
/*RM46*/
|
||
|
|
else if (cmd == RM_TIMEOUT_T_STUCK &&
|
||
|
|
smc->r.rm_join && smc->r.bn_flag) {
|
||
|
|
GO_STATE(RM6_DIRECTED) ;
|
||
|
|
break ;
|
||
|
|
}
|
||
|
|
break ;
|
||
|
|
case ACTIONS(RM5_RING_OP_DUP) :
|
||
|
|
stop_rmt_timer0(smc) ;
|
||
|
|
stop_rmt_timer1(smc) ;
|
||
|
|
stop_rmt_timer2(smc) ;
|
||
|
|
DB_RMTN(1,"RMT : RM5_RING_OP_DUP\n",0,0) ;
|
||
|
|
ACTIONS_DONE() ;
|
||
|
|
break;
|
||
|
|
case RM5_RING_OP_DUP :
|
||
|
|
/*RM52*/
|
||
|
|
if (smc->r.dup_addr_test == DA_PASSED) {
|
||
|
|
smc->r.da_flag = FALSE ;
|
||
|
|
GO_STATE(RM2_RING_OP) ;
|
||
|
|
break ;
|
||
|
|
}
|
||
|
|
/*RM54*/
|
||
|
|
else if (cmd == RM_RING_NON_OP) {
|
||
|
|
smc->r.jm_flag = FALSE ;
|
||
|
|
smc->r.bn_flag = FALSE ;
|
||
|
|
GO_STATE(RM4_NON_OP_DUP) ;
|
||
|
|
break ;
|
||
|
|
}
|
||
|
|
break ;
|
||
|
|
case ACTIONS(RM6_DIRECTED) :
|
||
|
|
start_rmt_timer0(smc,smc->s.rmt_t_direct,RM_TIMEOUT_T_DIRECT) ;
|
||
|
|
stop_rmt_timer1(smc) ;
|
||
|
|
start_rmt_timer2(smc,smc->s.rmt_t_poll,RM_TIMEOUT_POLL) ;
|
||
|
|
sm_ma_control(smc,MA_DIRECTED) ;
|
||
|
|
RS_SET(smc,RS_BEACON) ;
|
||
|
|
DB_RMTN(1,"RMT : RM6_DIRECTED\n",0,0) ;
|
||
|
|
ACTIONS_DONE() ;
|
||
|
|
break ;
|
||
|
|
case RM6_DIRECTED :
|
||
|
|
/*RM63*/
|
||
|
|
if (cmd == RM_TIMEOUT_POLL) {
|
||
|
|
start_rmt_timer2(smc,smc->s.rmt_t_poll,RM_TIMEOUT_POLL);
|
||
|
|
sm_mac_check_beacon_claim(smc) ;
|
||
|
|
#ifndef SUPERNET_3
|
||
|
|
/* Because of problems with the Supernet II chip set
|
||
|
|
* sending of Directed Beacon will stop after 165ms
|
||
|
|
* therefore restart_trt_for_dbcn(smc) will be called
|
||
|
|
* to prevent this.
|
||
|
|
*/
|
||
|
|
restart_trt_for_dbcn(smc) ;
|
||
|
|
#endif /*SUPERNET_3*/
|
||
|
|
break ;
|
||
|
|
}
|
||
|
|
if ((cmd == RM_MY_BEACON || cmd == RM_OTHER_BEACON) &&
|
||
|
|
!smc->r.da_flag) {
|
||
|
|
smc->r.bn_flag = FALSE ;
|
||
|
|
GO_STATE(RM3_DETECT) ;
|
||
|
|
break ;
|
||
|
|
}
|
||
|
|
/*RM64*/
|
||
|
|
else if ((cmd == RM_MY_BEACON || cmd == RM_OTHER_BEACON) &&
|
||
|
|
smc->r.da_flag) {
|
||
|
|
smc->r.bn_flag = FALSE ;
|
||
|
|
GO_STATE(RM4_NON_OP_DUP) ;
|
||
|
|
break ;
|
||
|
|
}
|
||
|
|
/*RM67*/
|
||
|
|
else if (cmd == RM_TIMEOUT_T_DIRECT) {
|
||
|
|
GO_STATE(RM7_TRACE) ;
|
||
|
|
break ;
|
||
|
|
}
|
||
|
|
break ;
|
||
|
|
case ACTIONS(RM7_TRACE) :
|
||
|
|
stop_rmt_timer0(smc) ;
|
||
|
|
stop_rmt_timer1(smc) ;
|
||
|
|
stop_rmt_timer2(smc) ;
|
||
|
|
smc->e.trace_prop |= ENTITY_BIT(ENTITY_MAC) ;
|
||
|
|
queue_event(smc,EVENT_ECM,EC_TRACE_PROP) ;
|
||
|
|
DB_RMTN(1,"RMT : RM7_TRACE\n",0,0) ;
|
||
|
|
ACTIONS_DONE() ;
|
||
|
|
break ;
|
||
|
|
case RM7_TRACE :
|
||
|
|
break ;
|
||
|
|
default:
|
||
|
|
SMT_PANIC(smc,SMT_E0122, SMT_E0122_MSG) ;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* (jd) RMT duplicate address actions
|
||
|
|
* leave the ring or reinsert just as configured
|
||
|
|
*/
|
||
|
|
static void rmt_dup_actions(struct s_smc *smc)
|
||
|
|
{
|
||
|
|
if (smc->r.jm_flag) {
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
if (smc->s.rmt_dup_mac_behavior) {
|
||
|
|
SMT_ERR_LOG(smc,SMT_E0138, SMT_E0138_MSG) ;
|
||
|
|
rmt_reinsert_actions(smc) ;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
SMT_ERR_LOG(smc,SMT_E0135, SMT_E0135_MSG) ;
|
||
|
|
rmt_leave_actions(smc) ;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Reconnect to the Ring
|
||
|
|
*/
|
||
|
|
static void rmt_reinsert_actions(struct s_smc *smc)
|
||
|
|
{
|
||
|
|
queue_event(smc,EVENT_ECM,EC_DISCONNECT) ;
|
||
|
|
queue_event(smc,EVENT_ECM,EC_CONNECT) ;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* duplicate address detected
|
||
|
|
*/
|
||
|
|
static void rmt_new_dup_actions(struct s_smc *smc)
|
||
|
|
{
|
||
|
|
smc->r.da_flag = TRUE ;
|
||
|
|
smc->r.bn_flag = FALSE ;
|
||
|
|
smc->r.jm_flag = FALSE ;
|
||
|
|
/*
|
||
|
|
* we have three options : change address, jam or leave
|
||
|
|
* we leave the ring as default
|
||
|
|
* Optionally it's possible to reinsert after leaving the Ring
|
||
|
|
* but this will not conform with SMT Spec.
|
||
|
|
*/
|
||
|
|
if (smc->s.rmt_dup_mac_behavior) {
|
||
|
|
SMT_ERR_LOG(smc,SMT_E0138, SMT_E0138_MSG) ;
|
||
|
|
rmt_reinsert_actions(smc) ;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
SMT_ERR_LOG(smc,SMT_E0135, SMT_E0135_MSG) ;
|
||
|
|
rmt_leave_actions(smc) ;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* leave the ring
|
||
|
|
*/
|
||
|
|
static void rmt_leave_actions(struct s_smc *smc)
|
||
|
|
{
|
||
|
|
queue_event(smc,EVENT_ECM,EC_DISCONNECT) ;
|
||
|
|
/*
|
||
|
|
* Note: Do NOT try again later. (with please reconnect)
|
||
|
|
* The station must be left from the ring!
|
||
|
|
*/
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* SMT timer interface
|
||
|
|
* start RMT timer 0
|
||
|
|
*/
|
||
|
|
static void start_rmt_timer0(struct s_smc *smc, u_long value, int event)
|
||
|
|
{
|
||
|
|
smc->r.timer0_exp = FALSE ; /* clear timer event flag */
|
||
|
|
smt_timer_start(smc,&smc->r.rmt_timer0,value,EV_TOKEN(EVENT_RMT,event));
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* SMT timer interface
|
||
|
|
* start RMT timer 1
|
||
|
|
*/
|
||
|
|
static void start_rmt_timer1(struct s_smc *smc, u_long value, int event)
|
||
|
|
{
|
||
|
|
smc->r.timer1_exp = FALSE ; /* clear timer event flag */
|
||
|
|
smt_timer_start(smc,&smc->r.rmt_timer1,value,EV_TOKEN(EVENT_RMT,event));
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* SMT timer interface
|
||
|
|
* start RMT timer 2
|
||
|
|
*/
|
||
|
|
static void start_rmt_timer2(struct s_smc *smc, u_long value, int event)
|
||
|
|
{
|
||
|
|
smc->r.timer2_exp = FALSE ; /* clear timer event flag */
|
||
|
|
smt_timer_start(smc,&smc->r.rmt_timer2,value,EV_TOKEN(EVENT_RMT,event));
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* SMT timer interface
|
||
|
|
* stop RMT timer 0
|
||
|
|
*/
|
||
|
|
static void stop_rmt_timer0(struct s_smc *smc)
|
||
|
|
{
|
||
|
|
if (smc->r.rmt_timer0.tm_active)
|
||
|
|
smt_timer_stop(smc,&smc->r.rmt_timer0) ;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* SMT timer interface
|
||
|
|
* stop RMT timer 1
|
||
|
|
*/
|
||
|
|
static void stop_rmt_timer1(struct s_smc *smc)
|
||
|
|
{
|
||
|
|
if (smc->r.rmt_timer1.tm_active)
|
||
|
|
smt_timer_stop(smc,&smc->r.rmt_timer1) ;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* SMT timer interface
|
||
|
|
* stop RMT timer 2
|
||
|
|
*/
|
||
|
|
static void stop_rmt_timer2(struct s_smc *smc)
|
||
|
|
{
|
||
|
|
if (smc->r.rmt_timer2.tm_active)
|
||
|
|
smt_timer_stop(smc,&smc->r.rmt_timer2) ;
|
||
|
|
}
|
||
|
|
|