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3912 | mejdrech | 1 | /* |
2 | * Copyright (c) 2009 Lukas Mejdrech |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
29 | /** @addtogroup net_nil |
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30 | * @{ |
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31 | */ |
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32 | |||
33 | /** @file |
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34 | * Internetwork layer services - network interface layer service type translation. |
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35 | */ |
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36 | |||
37 | #ifndef __NET_PROTOCOL_MAP_H__ |
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38 | #define __NET_PROTOCOL_MAP_H__ |
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39 | |||
40 | #include <ipc/services.h> |
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41 | |||
4075 | mejdrech | 42 | #include "ethernet_lsap.h" |
3912 | mejdrech | 43 | #include "ethernet_protocols.h" |
4243 | mejdrech | 44 | #include "hardware.h" |
3912 | mejdrech | 45 | |
46 | /** Maps the internetwork layer service to the network interface layer type. |
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47 | * @param nil Network interface layer service. Input parameter. |
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48 | * @param il Internetwork layer service. Input parameter. |
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49 | * @returns Network interface layer type of the internetworking layer service. |
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50 | * @returns 0 if mapping is not found. |
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51 | */ |
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4558 | mejdrech | 52 | static inline eth_type_t protocol_map( services_t nil, services_t il ){ |
3912 | mejdrech | 53 | switch( nil ){ |
54 | case SERVICE_ETHERNET: |
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4351 | mejdrech | 55 | case SERVICE_DP8390: |
3912 | mejdrech | 56 | switch( il ){ |
57 | case SERVICE_IP: |
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58 | return ETH_P_IP; |
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59 | case SERVICE_ARP: |
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60 | return ETH_P_ARP; |
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61 | default: |
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62 | return 0; |
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63 | } |
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64 | default: |
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65 | return 0; |
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66 | } |
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67 | } |
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68 | |||
69 | /** Maps the network interface layer type to the internetwork layer service. |
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70 | * @param nil Network interface layer service. Input parameter. |
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71 | * @param protocol Network interface layer type. Input parameter. |
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72 | * @returns Internetwork layer service of the network interface layer type. |
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73 | * @returns 0 if mapping is not found. |
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74 | */ |
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75 | static inline services_t protocol_unmap( services_t nil, int protocol ){ |
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76 | switch( nil ){ |
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77 | case SERVICE_ETHERNET: |
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4351 | mejdrech | 78 | case SERVICE_DP8390: |
3912 | mejdrech | 79 | switch( protocol ){ |
80 | case ETH_P_IP: |
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81 | return SERVICE_IP; |
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82 | case ETH_P_ARP: |
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83 | return SERVICE_ARP; |
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84 | default: |
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85 | return 0; |
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86 | } |
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87 | default: |
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88 | return 0; |
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89 | } |
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90 | } |
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91 | |||
4075 | mejdrech | 92 | /** Maps the link service access point identifier to the Ethernet protocol identifier. |
93 | * @param lsap Link service access point identifier. Input parameter. |
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94 | * @returns Ethernet protocol identifier of the link service access point identifier. |
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95 | * @returns ETH_LSAP_NULL if mapping is not found. |
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96 | */ |
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4708 | mejdrech | 97 | static inline eth_type_t lsap_map( eth_lsap_t lsap ){ |
4075 | mejdrech | 98 | switch( lsap ){ |
99 | case ETH_LSAP_IP: |
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100 | return ETH_P_IP; |
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101 | case ETH_LSAP_ARP: |
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102 | return ETH_P_ARP; |
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103 | default: |
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104 | return ETH_LSAP_NULL; |
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105 | } |
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106 | } |
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107 | |||
4743 | mejdrech | 108 | /** Maps the Ethernet protocol identifier to the link service access point identifier. |
109 | * @param ethertype Ethernet protocol identifier. Input parameter. |
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110 | * @returns Link service access point identifier. |
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111 | * @returns 0 if mapping is not found. |
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112 | */ |
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113 | static inline eth_lsap_t lsap_unmap( eth_type_t ethertype ){ |
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114 | switch( ethertype ){ |
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115 | case ETH_P_IP: |
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116 | return ETH_LSAP_IP; |
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117 | case ETH_P_ARP: |
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118 | return ETH_LSAP_ARP; |
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119 | default: |
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120 | return 0; |
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121 | } |
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122 | } |
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123 | |||
4350 | mejdrech | 124 | /** Maps the network interface layer services to the hardware types. |
125 | * @param nil The network interface service. Input parameter. |
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126 | * @returns The hardware type of the network interface service. |
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127 | * @returns 0 if mapping is not found. |
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4243 | mejdrech | 128 | */ |
4558 | mejdrech | 129 | static inline hw_type_t hardware_map( services_t nil ){ |
4243 | mejdrech | 130 | switch( nil ){ |
131 | case SERVICE_ETHERNET: |
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4261 | mejdrech | 132 | case SERVICE_DP8390: |
4243 | mejdrech | 133 | return HW_ETHER; |
134 | default: |
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135 | return 0; |
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136 | } |
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137 | } |
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138 | |||
3912 | mejdrech | 139 | #endif |
140 | |||
141 | /** @} |
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142 | */ |