83be05256b
This adds config option to specify static roles for master and slave in the Best Master Clock Algorithm. This is the case for Automotive Profile where networks are mostly static and role for each device is known in advance. masterOnly and slaveOnly will be used to determine the roles for the devices. Since masterOnly is a per-port config and slaveOnly is a global config option, role assignment will be slightly odd in case of bridges. If slaveOnly is set to 1, all the ports will be in slave roles except for the ones where masterOnly is set to 1. These ports will assume the master role. Two new FSMs which will be used for master and slave roles for this config option have also been added. Signed-off-by: Vedang Patel <vedang.patel@intel.com>
108 lines
2.2 KiB
C
108 lines
2.2 KiB
C
/**
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* @file designated_fsm.c
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* @brief Implements designated Finite State Machines.
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* @note Copyright (C) 2018 Intel Corporation
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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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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA.
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*/
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#include "fsm.h"
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#include "designated_fsm.h"
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enum port_state designated_master_fsm(enum port_state state,
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enum fsm_event event,
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int mdiff)
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{
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enum port_state next = state;
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if (EV_INITIALIZE == event || EV_POWERUP == event)
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return PS_INITIALIZING;
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switch (state) {
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case PS_INITIALIZING:
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switch (event) {
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case EV_FAULT_DETECTED:
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next = PS_FAULTY;
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break;
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case EV_INIT_COMPLETE:
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next = PS_MASTER;
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break;
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default:
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break;
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}
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break;
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case PS_FAULTY:
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if (event == EV_FAULT_CLEARED) {
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next = PS_INITIALIZING;
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}
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break;
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case PS_MASTER:
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if (event == EV_FAULT_DETECTED) {
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next = PS_FAULTY;
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}
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break;
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default:
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break;
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}
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return next;
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}
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enum port_state designated_slave_fsm(enum port_state state,
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enum fsm_event event,
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int mdiff)
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{
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enum port_state next = state;
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if (EV_INITIALIZE == event || EV_POWERUP == event)
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return PS_INITIALIZING;
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switch (state) {
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case PS_INITIALIZING:
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switch (event) {
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case EV_FAULT_DETECTED:
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next = PS_FAULTY;
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break;
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case EV_INIT_COMPLETE:
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next = PS_SLAVE;
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break;
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default:
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break;
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}
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break;
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case PS_FAULTY:
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if (event == EV_FAULT_CLEARED) {
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next = PS_INITIALIZING;
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}
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break;
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case PS_SLAVE:
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switch (event) {
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case EV_FAULT_DETECTED:
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next = PS_FAULTY;
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break;
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default:
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break;
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}
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break;
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default:
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break;
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}
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return next;
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}
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