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  1. /*
  2.  * Copyright (c) 2009 Lukas Mejdrech
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup arp
  30.  *  @{
  31.  */
  32.  
  33. /** @file
  34.  *  ARP module.
  35.  */
  36.  
  37. #ifndef __NET_ARP_H__
  38. #define __NET_ARP_H__
  39.  
  40. #include <rwlock.h>
  41.  
  42. #include <ipc/ipc.h>
  43.  
  44. #include "../../netif/device.h"
  45.  
  46. #include "../../structures/generic_char_map.h"
  47. #include "../../structures/int_map.h"
  48. #include "../../structures/measured_strings.h"
  49.  
  50.  
  51. /** Type definition of the ARP global data.
  52.  *  @see arp_globals
  53.  */
  54. typedef struct arp_globals  arp_globals_t;
  55.  
  56. /** Type definition of the ARP device specific data.
  57.  *  @see arp_device
  58.  */
  59. typedef struct arp_device   arp_device_t;
  60.  
  61. /** Type definition of the ARP device specific data pointer.
  62.  *  @see arp_device
  63.  */
  64. typedef arp_device_t *      arp_device_ref;
  65.  
  66. /** Type definition of the ARP protocol specific data.
  67.  *  @see arp_proto
  68.  */
  69. typedef struct arp_proto    arp_proto_t;
  70.  
  71. /** Type definition of the ARP protocol specific data pointer.
  72.  *  @see arp_proto
  73.  */
  74. typedef arp_proto_t *       arp_proto_ref;
  75.  
  76. /** ARP address cache.
  77.  *  Maps devices to the ARP device specific data.
  78.  *  @see device.h
  79.  */
  80. DEVICE_MAP_DECLARE( arp_cache, arp_device_t )
  81.  
  82. /** ARP protocol map.
  83.  *  Maps protocol identifiers to the ARP protocol specific data.
  84.  *  @see int_map.h
  85.  */
  86. INT_MAP_DECLARE( arp_protos, arp_proto_t )
  87.  
  88. /** ARP address map.
  89.  *  Translates addresses.
  90.  *  @see generic_char_map.h
  91.  */
  92. GENERIC_CHAR_MAP_DECLARE( arp_addr, measured_string_t )
  93.  
  94. /** ARP device specific data.
  95.  */
  96. struct arp_device{
  97.     /** Device identifier.
  98.      */
  99.     device_id_t         device_id;
  100.     /** Hardware type.
  101.      */
  102.     ipcarg_t            hardware;
  103.     /** Reserved packet prefix length.
  104.      */
  105.     ipcarg_t            prefix;
  106.     /** Maximal packet content length.
  107.      */
  108.     ipcarg_t            content;
  109.     /** Reserved packet suffix length.
  110.      */
  111.     ipcarg_t            suffix;
  112.     /** Packet address length.
  113.      *  The hardware address length is used.
  114.      */
  115.     ipcarg_t            addr_len;
  116.     /** Actual device hardware address.
  117.      */
  118.     measured_string_ref addr;
  119.     /** Actual device hardware address data.
  120.      */
  121.     char *              addr_data;
  122.     /** Broadcast device hardware address.
  123.      */
  124.     measured_string_ref broadcast_addr;
  125.     /** Broadcast device hardware address data.
  126.      */
  127.     char *              broadcast_data;
  128.     /** Device driver service.
  129.      */
  130.     services_t          service;
  131.     /** Driver phone.
  132.      */
  133.     int                 phone;
  134.     /** Protocol map.
  135.      *  Address map for each protocol.
  136.      */
  137.     arp_protos_t        protos;
  138. };
  139.  
  140. /** ARP protocol specific data.
  141.  */
  142. struct arp_proto{
  143.     /** Protocol service.
  144.      */
  145.     services_t          service;
  146.     /** Actual device protocol address.
  147.      */
  148.     measured_string_ref addr;
  149.     /** Actual device protocol address data.
  150.      */
  151.     char *              addr_data;
  152.     /** Address map.
  153.      */
  154.     arp_addr_t          addresses;
  155. };
  156.  
  157. /** ARP global data.
  158.  */
  159. struct  arp_globals{
  160.     /** Networking module phone.
  161.      */
  162.     int         networking_phone;
  163.     /** Safety lock.
  164.      */
  165.     rwlock_t        lock;
  166.     /** ARP address cache.
  167.      */
  168.     arp_cache_t cache;
  169. };
  170.  
  171. #endif
  172.  
  173. /** @}
  174.  */
  175.