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/**
* @file unicast_service.h
* @brief Unicast service
* @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.
*/
#ifndef HAVE_UNICAST_SERVICE_H
#define HAVE_UNICAST_SERVICE_H
struct port;
struct ptp_message;
struct tlv_extra;
#define SERVICE_GRANTED 0
#define SERVICE_DENIED 1
#define SERVICE_DISABLED 2
/**
* Handle a request for unicast service.
* @param p The port on which the signaling message was received.
* @param m The signaling message containing the request.
* @param extra The TLV containing the request.
* @return SERVICE_GRANTED, SERVICE_DENIED, or SERVICE_DISABLED.
*/
int unicast_service_add(struct port *p, struct ptp_message *m,
struct tlv_extra *extra);
/**
* Frees all of the resources associated with a port's unicast service.
* @param p The port in question.
*/
void unicast_service_cleanup(struct port *p);
/**
* Responds to a unicast service request with a denial.
* @param p The port on which the signaling message was received.
* @param m The signaling message containing the request.
* @param extra The TLV containing the request.
* @return Zero on success, non-zero otherwise.
*/
int unicast_service_deny(struct port *p, struct ptp_message *m,
struct tlv_extra *extra);
/**
* Responds to a unicast service request with a grant.
* @param p The port on which the signaling message was received.
* @param m The signaling message containing the request.
* @param extra The TLV containing the request.
* @return Zero on success, non-zero otherwise.
*/
int unicast_service_grant(struct port *p, struct ptp_message *m,
struct tlv_extra *extra);
/**
* Initializes unicast service on a given port.
* @param p The port in question.
* @return Zero on success, non-zero otherwise.
*/
int unicast_service_initialize(struct port *p);
/**
* Handle a unicast service cancellation.
* @param p The port on which the signaling message was received.
* @param m The signaling message containing the cancellation.
* @param extra The TLV containing the cancellation.
*/
void unicast_service_remove(struct port *p, struct ptp_message *m,
struct tlv_extra *extra);
/**
* Handles the unicast service timer, sending messages according to schedule.
* @param p The port in question.
* @return Zero on success, non-zero otherwise.
*/
int unicast_service_timer(struct port *p);
#endif
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