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/************************************************************************
* RSTP library - Rapid Spanning Tree (802.1t, 802.1w)
* Copyright (C) 2001-2003 Optical Access
* Author: Alex Rozin
*
* This file is part of RSTP library.
*
* RSTP library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by the
* Free Software Foundation; version 2.1
*
* RSTP library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
* General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with RSTP library; see the file COPYING. If not, write to the Free
* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
**********************************************************************/
/* "Times" API : bridgeTime, rootTimes, portTimes, designatedTimes, msgTimes */
#include "base.h"
int
STP_compare_times (IN TIMEVALUES_T *t1, IN TIMEVALUES_T *t2)
{
if (t1->MessageAge < t2->MessageAge) return -1;
if (t1->MessageAge > t2->MessageAge) return 1;
if (t1->MaxAge < t2->MaxAge) return -2;
if (t1->MaxAge > t2->MaxAge) return 2;
if (t1->ForwardDelay < t2->ForwardDelay) return -3;
if (t1->ForwardDelay > t2->ForwardDelay) return 3;
if (t1->HelloTime < t2->HelloTime) return -4;
if (t1->HelloTime > t2->HelloTime) return 4;
return 0;
}
void
STP_get_times (IN BPDU_BODY_T *b, OUT TIMEVALUES_T *v)
{
/* LINTED: alignment */
v->MessageAge = ntohs (*((unsigned short*) b->message_age)) >> 8;
/* LINTED: alignment */
v->MaxAge = ntohs (*((unsigned short*) b->max_age)) >> 8;
/* LINTED: alignment */
v->ForwardDelay = ntohs (*((unsigned short*) b->forward_delay)) >> 8;
/* LINTED: alignment */
v->HelloTime = ntohs (*((unsigned short*) b->hello_time)) >> 8;
}
void
STP_set_times (IN TIMEVALUES_T *v, OUT BPDU_BODY_T *b)
{
unsigned short mt;
#define STP_SET_TIME(f, t) \
mt = htons (f << 8); \
(void) memcpy (t, &mt, 2);
STP_SET_TIME(v->MessageAge, b->message_age);
STP_SET_TIME(v->MaxAge, b->max_age);
STP_SET_TIME(v->ForwardDelay, b->forward_delay);
STP_SET_TIME(v->HelloTime, b->hello_time);
}
void
STP_copy_times (OUT TIMEVALUES_T *t, IN TIMEVALUES_T *f)
{
t->MessageAge = f->MessageAge;
t->MaxAge = f->MaxAge;
t->ForwardDelay = f->ForwardDelay;
t->HelloTime = f->HelloTime;
}
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