source: mainline/uspace/srv/net/nil/eth/eth.h@ 03649d8

/*
 * 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 eth
 *  @{
 */

/** @file
 * Ethernet module.
 */

#ifndef NET_ETH_H_
#define NET_ETH_H_

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

#include <net/device.h>
#include <adt/measured_strings.h>

/** Type definition of the Ethernet global data.
 * @see eth_globals
 */
typedef struct eth_globals eth_globals_t;

/** Type definition of the Ethernet device specific data.
 * @see eth_device
 */
typedef struct eth_device eth_device_t;

/** Type definition of the Ethernet device specific data pointer.
 * @see eth_device
 */
typedef eth_device_t *eth_device_ref;

/** Type definition of the Ethernet protocol specific data.
 * @see eth_proto
 */
typedef struct eth_proto eth_proto_t;

/** Type definition of the Ethernet protocol specific data pointer.
 * @see eth_proto
 */
typedef eth_proto_t *eth_proto_ref;

/** Ethernet device map.
 * Maps devices to the Ethernet device specific data.
 * @see device.h
 */
DEVICE_MAP_DECLARE(eth_devices, eth_device_t);

/** Ethernet protocol map.
 * Maps protocol identifiers to the Ethernet protocol specific data.
 * @see int_map.h
 */
INT_MAP_DECLARE(eth_protos, eth_proto_t);

/** Ethernet device specific data. */
struct eth_device {
        /** Device identifier. */
        device_id_t device_id;
        /** Device driver service. */
        services_t service;
        /** Driver phone. */
        int phone;
        /** Maximal transmission unit. */
        size_t mtu;
        
        /**
         * Various device flags.
         * @see ETH_DUMMY
         * @see ETH_MODE_MASK
         */
        int flags;
        
        /** Actual device hardware address. */
        measured_string_ref addr;
        /** Actual device hardware address data. */
        char *addr_data;
};

/** Ethernet protocol specific data. */
struct eth_proto {
        /** Protocol service. */
        services_t service;
        /** Protocol identifier. */
        int protocol;
        /** Protocol module phone. */
        int phone;
};

/** Ethernet global data. */
struct eth_globals {
        /** Networking module phone. */
        int net_phone;
        /** Safety lock for devices. */
        fibril_rwlock_t devices_lock;
        /** All known Ethernet devices. */
        eth_devices_t devices;
        /** Safety lock for protocols. */
        fibril_rwlock_t protos_lock;
        
        /**
         * Protocol map.
         * Service phone map for each protocol.
         */
        eth_protos_t protos;
        
        /** Broadcast device hardware address. */
        measured_string_ref broadcast_addr;
};

#endif

/** @}
 */