/*
 * Copyright (c) 2009 Lukas Mejdrech
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */

/** @addtogroup ip
 *  @{
 */

/** @file
 *  IP module.
 */

#ifndef __NET_IP_H__
#define __NET_IP_H__

#include <fibril_synch.h>
#include <ipc/ipc.h>
#include <ipc/services.h>

#include <net/device.h>
#include <net/inet.h>
#include <ip_interface.h>
#include <adt/int_map.h>
#include <adt/generic_field.h>
#include <adt/module_map.h>

/** Type definition of the IP global data.
 *  @see ip_globals
 */
typedef struct ip_globals	ip_globals_t;

/** Type definition of the IP network interface specific data.
 *  @see ip_netif
 */
typedef struct ip_netif	ip_netif_t;

/** Type definition of the IP network interface specific data pointer.
 *  @see ip_netif
 */
typedef ip_netif_t *	ip_netif_ref;

/** Type definition of the IP protocol specific data.
 *  @see ip_proto
 */
typedef struct ip_proto	ip_proto_t;

/** Type definition of the IP protocol specific data pointer.
 *  @see ip_proto
 */
typedef ip_proto_t *	ip_proto_ref;

/** Type definition of the IP route specific data.
 *  @see ip_route
 */
typedef struct ip_route	ip_route_t;

/** Type definition of the IP route specific data pointer.
 *  @see ip_route
 */
typedef ip_route_t *	ip_route_ref;

/** IP network interfaces.
 *  Maps devices to the IP network interface specific data.
 *  @see device.h
 */
DEVICE_MAP_DECLARE(ip_netifs, ip_netif_t)

/** IP registered protocols.
 *  Maps protocols to the IP protocol specific data.
 *  @see int_map.h
 */
INT_MAP_DECLARE(ip_protos, ip_proto_t)

/** IP routing table.
 *  @see generic_field.h
 */
GENERIC_FIELD_DECLARE(ip_routes, ip_route_t)

/** IP network interface specific data.
 */
struct	ip_netif{
	/** ARP module.
	 *  Assigned if using ARP.
	 */
	module_ref arp;
	/** Broadcast address.
	 */
	in_addr_t broadcast;
	/** Device identifier.
	 */
	device_id_t device_id;
	/** Indicates whether using DHCP.
	 */
	int dhcp;
	/** IP version.
	 */
	int ipv;
	/** Packet dimension.
	 */
	packet_dimension_t packet_dimension;
	/** Netif module phone.
	 */
	int phone;
	/** Routing table.
	 */
	ip_routes_t routes;
	/** Indicates whether IP routing is enabled.
	 */
	int routing;
	/** Netif module service.
	 */
	services_t service;
	/** Device state.
	 */
	device_state_t state;
};

/** IP protocol specific data.
 */
struct ip_proto{
	/** Protocol module phone.
	 */
	int phone;
	/** Protocol number.
	 */
	int protocol;
	/** Protocol packet receiving function.
	 */
	tl_received_msg_t received_msg;
	/** Protocol module service.
	 */
	services_t service;
};

/** IP route specific data.
 */
struct ip_route{
	/** Target address.
	 */
	in_addr_t address;
	/** Gateway.
	 */
	in_addr_t gateway;
	/** Parent netif.
	 */
	ip_netif_ref netif;
	/** Target network mask.
	 */
	in_addr_t netmask;
};

/** IP global data.
 */
struct	ip_globals{
	/** Default client connection function for support modules.
	 */
	async_client_conn_t client_connection;
	/** Default gateway.
	 */
	ip_route_t gateway;
	/** Safety lock.
	 */
	fibril_rwlock_t lock;
	/** Known support modules.
	 */
	modules_t modules;
	/** Networking module phone.
	 */
	int net_phone;
	/** Registered network interfaces.
	 */
	ip_netifs_t netifs;
	/** Netifs safeyt lock.
	 */
	fibril_rwlock_t netifs_lock;
	/** Packet counter.
	 */
	uint16_t packet_counter;
	/** Registered protocols.
	 */
	ip_protos_t protos;
	/** Protocols safety lock.
	 */
	fibril_rwlock_t protos_lock;
};

#endif

/** @}
 */