63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
/**
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* @file foreign.h
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* @brief Defines a foreign clock record.
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* @note Copyright (C) 2011 Richard Cochran <richardcochran@gmail.com>
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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 02110-1301 USA.
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*/
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#ifndef HAVE_FOREIGN_H
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#define HAVE_FOREIGN_H
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#include <sys/queue.h>
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#include "ds.h"
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#include "port.h"
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#define FOREIGN_MASTER_THRESHOLD 2
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struct foreign_clock {
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/**
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* Pointer to next foreign_clock in list.
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*/
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LIST_ENTRY(foreign_clock) list;
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/**
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* A list of received announce messages.
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*
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* The data set field, foreignMasterPortIdentity, is the
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* sourcePortIdentity of the first message.
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*/
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TAILQ_HEAD(messages, ptp_message) messages;
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/**
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* Number of elements in the message list,
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* aka foreignMasterAnnounceMessages.
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*/
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unsigned int n_messages;
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/**
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* Pointer to the associated port.
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*/
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struct port *port;
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/**
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* Contains the information from the latest announce message
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* in a form suitable for comparision in the BMCA.
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*/
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struct dataset dataset;
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};
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#endif
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