/**
 * @file port_signaling.c
 * @brief Implements signaling messages
 * @note Copyright (C) 2018 Richard Cochran <richardcochran@gmail.com>
 *
 * 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.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA.
 */
#include "port_private.h"

struct ptp_message *port_signaling_construct(struct port *p,
					     struct address *address,
					     struct PortIdentity *tpid)
{
	struct ptp_message *msg;

	msg = msg_allocate();
	if (!msg) {
		return NULL;
	}
	msg->hwts.type                 = p->timestamping;
	msg->header.tsmt               = SIGNALING | p->transportSpecific;
	msg->header.ver                = PTP_VERSION;
	msg->header.messageLength      = sizeof(struct signaling_msg);
	msg->header.domainNumber       = clock_domain_number(p->clock);
	msg->header.sourcePortIdentity = p->portIdentity;
	msg->header.sequenceId         = p->seqnum.signaling++;
	msg->header.control            = CTL_OTHER;
	msg->header.logMessageInterval = 0x7F;
	msg->signaling.targetPortIdentity = *tpid;
	msg->header.flagField[0] |= UNICAST;
	msg->address = *address;

	return msg;
}