/*

 * Copyright (c) 2005, Swedish Institute of Computer Science

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. Neither the name of the Institute nor the names of its contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 * This file is part of the uIP TCP/IP stack

 *

 */

#ifndef __DHCPC_H__

#define __DHCPC_H__

#include <time.h>

#include "nic.h"

#include "timer.h"

#include "pt.h"

#include "uip.h"

#define STATE_INITIAL         0

#define STATE_SENDING         1

#define STATE_OFFER_RECEIVED  2

#define STATE_CONFIG_RECEIVED 3

struct dhcpc_state {

	struct pt pt;

	nic_t *nic;

	struct uip_stack *ustack;

	char state;

	struct uip_udp_conn *conn;

	struct timer timer;

	u32_t ticks;

	const void *mac_addr;

	int mac_len;

	u8_t serverid[4];

	u16_t lease_time[2];

	u32_t lease_time_nl32;

	u16_t ipaddr[2];

	u16_t netmask[2];

	u16_t dnsaddr[2];

	u16_t default_router[2];

	time_t last_update;

};

struct dhcpc_options {

	u8_t enable_random_xid;

	u8_t xid[4];

};

int dhcpc_init(nic_t *nic, struct uip_stack *ustack,

	       const void *mac_addr, int mac_len);

void dhcpc_request(struct uip_stack *ustack);

void dhcpc_appcall(struct uip_stack *ustack);

void dhcpc_configured(const struct dhcpc_state *s);

#define UIP_UDP_APPCALL dhcpc_appcall

#endif /* __DHCPC_H__ */