/**

 * @file transport.c

 * @note Copyright (C) 2011 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 02110-1301 USA.

 */

#include <arpa/inet.h>

#include "transport.h"

#include "transport_private.h"

#include "raw.h"

#include "udp.h"

#include "udp6.h"

#include "uds.h"

int transport_close(struct transport *t, struct fdarray *fda)

{

	return t->close(t, fda);

}

int transport_open(struct transport *t, struct interface *iface,

		   struct fdarray *fda, enum timestamp_type tt)

{

	return t->open(t, iface, fda, tt);

}

int transport_recv(struct transport *t, int fd, struct ptp_message *msg)

{

	return t->recv(t, fd, msg, sizeof(msg->data), &msg->address, &msg->hwts);

}

int transport_send(struct transport *t, struct fdarray *fda,

		   enum transport_event event, struct ptp_message *msg)

{

	int len = ntohs(msg->header.messageLength);

	return t->send(t, fda, event, 0, msg, len, NULL, &msg->hwts);

}

int transport_peer(struct transport *t, struct fdarray *fda,

		   enum transport_event event, struct ptp_message *msg)

{

	int len = ntohs(msg->header.messageLength);

	return t->send(t, fda, event, 1, msg, len, NULL, &msg->hwts);

}

int transport_sendto(struct transport *t, struct fdarray *fda,

		     enum transport_event event, struct ptp_message *msg)

{

	int len = ntohs(msg->header.messageLength);

	return t->send(t, fda, event, 0, msg, len, &msg->address, &msg->hwts);

}

int transport_txts(struct fdarray *fda,

		   struct ptp_message *msg)

{

	int cnt, len = ntohs(msg->header.messageLength);

	struct hw_timestamp *hwts = &msg->hwts;

	unsigned char pkt[1600];

	cnt = sk_receive(fda->fd[FD_EVENT], pkt, len, NULL, hwts, MSG_ERRQUEUE);

	return cnt > 0 ? 0 : cnt;

}

int transport_physical_addr(struct transport *t, uint8_t *addr)

{

	if (t->physical_addr) {

		return t->physical_addr(t, addr);

	}

	return 0;

}

int transport_protocol_addr(struct transport *t, uint8_t *addr)

{

	if (t->protocol_addr) {

		return t->protocol_addr(t, addr);

	}

	return 0;

}

enum transport_type transport_type(struct transport *t)

{

	return t->type;

}

struct transport *transport_create(struct config *cfg,

				   enum transport_type type)

{

	struct transport *t = NULL;

	switch (type) {

	case TRANS_UDS:

		t = uds_transport_create();

		break;

	case TRANS_UDP_IPV4:

		t = udp_transport_create();

		break;

	case TRANS_UDP_IPV6:

		t = udp6_transport_create();

		break;

	case TRANS_IEEE_802_3:

		t = raw_transport_create();

		break;

	case TRANS_DEVICENET:

	case TRANS_CONTROLNET:

	case TRANS_PROFINET:

		break;

	}

	if (t) {

		t->type = type;

		t->cfg = cfg;

	}

	return t;

}

void transport_destroy(struct transport *t)

{

	t->release(t);

}