Subversion Repositories HelenOS

Rev

Rev 4558 | Go to most recent revision | Blame | Compare with Previous | Last modification | View Log | Download | RSS feed

  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 net_nil
  30.  *  @{
  31.  */
  32.  
  33. /** @file
  34.  *  Internetwork layer services - network interface layer service type translation.
  35.  */
  36.  
  37. #ifndef __NET_PROTOCOL_MAP_H__
  38. #define __NET_PROTOCOL_MAP_H__
  39.  
  40. #include <ipc/services.h>
  41.  
  42. #include "ethernet_lsap.h"
  43. #include "ethernet_protocols.h"
  44. #include "hardware.h"
  45.  
  46. /** Maps the internetwork layer service to the network interface layer type.
  47.  *  @param nil Network interface layer service. Input parameter.
  48.  *  @param il Internetwork layer service. Input parameter.
  49.  *  @returns Network interface layer type of the internetworking layer service.
  50.  *  @returns 0 if mapping is not found.
  51.  */
  52. static inline eth_type_t protocol_map( services_t nil, services_t il ){
  53.     switch( nil ){
  54.         case SERVICE_ETHERNET:
  55.         case SERVICE_DP8390:
  56.             switch( il ){
  57.                 case SERVICE_IP:
  58.                     return ETH_P_IP;
  59.                 case SERVICE_ARP:
  60.                     return ETH_P_ARP;
  61.                 default:
  62.                     return 0;
  63.             }
  64.         default:
  65.             return 0;
  66.     }
  67. }
  68.  
  69. /** Maps the network interface layer type to the internetwork layer service.
  70.  *  @param nil Network interface layer service. Input parameter.
  71.  *  @param protocol Network interface layer type. Input parameter.
  72.  *  @returns Internetwork layer service of the network interface layer type.
  73.  *  @returns 0 if mapping is not found.
  74.  */
  75. static inline services_t protocol_unmap( services_t nil, int protocol ){
  76.     switch( nil ){
  77.         case SERVICE_ETHERNET:
  78.         case SERVICE_DP8390:
  79.             switch( protocol ){
  80.                 case ETH_P_IP:
  81.                     return SERVICE_IP;
  82.                 case ETH_P_ARP:
  83.                     return SERVICE_ARP;
  84.                 default:
  85.                     return 0;
  86.             }
  87.         default:
  88.             return 0;
  89.     }
  90. }
  91.  
  92. /** Maps the link service access point identifier to the Ethernet protocol identifier.
  93.  *  @param lsap Link service access point identifier. Input parameter.
  94.  *  @returns Ethernet protocol identifier of the link service access point identifier.
  95.  *  @returns ETH_LSAP_NULL if mapping is not found.
  96.  */
  97. static inline eth_type_t lsap_map( eth_lsap_t lsap ){
  98.     switch( lsap ){
  99.         case ETH_LSAP_IP:
  100.             return ETH_P_IP;
  101.         case ETH_LSAP_ARP:
  102.             return ETH_P_ARP;
  103.         default:
  104.             return ETH_LSAP_NULL;
  105.     }
  106. }
  107.  
  108. /** Maps the network interface layer services to the hardware types.
  109.  *  @param nil The network interface service. Input parameter.
  110.  *  @returns The hardware type of the network interface service.
  111.  *  @returns 0 if mapping is not found.
  112.  */
  113. static inline hw_type_t hardware_map( services_t nil ){
  114.     switch( nil ){
  115.         case SERVICE_ETHERNET:
  116.         case SERVICE_DP8390:
  117.             return HW_ETHER;
  118.         default:
  119.             return 0;
  120.     }
  121. }
  122.  
  123. #endif
  124.  
  125. /** @}
  126.  */
  127.