1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * This program is free software; you can redistribute it and/or
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4 | * modify it under the terms of the GNU General Public License
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5 | * as published by the Free Software Foundation; either version
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6 | * 2 of the License, or (at your option) any later version.
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7 | *
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8 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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9 | */
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10 |
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11 | #include "libbb.h"
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12 | #include "rt_names.h"
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13 | #include "utils.h"
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14 |
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15 | #include <netinet/if_ether.h>
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16 |
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17 | /* Please conditionalize exotic protocols on CONFIG_something */
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18 |
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19 | static const uint16_t llproto_ids[] = {
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20 | #define __PF(f,n) ETH_P_##f,
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21 | __PF(LOOP,loop)
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22 | __PF(PUP,pup)
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23 | #ifdef ETH_P_PUPAT
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24 | __PF(PUPAT,pupat)
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25 | #endif
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26 | __PF(IP,ip)
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27 | __PF(X25,x25)
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28 | __PF(ARP,arp)
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29 | __PF(BPQ,bpq)
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30 | #ifdef ETH_P_IEEEPUP
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31 | __PF(IEEEPUP,ieeepup)
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32 | #endif
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33 | #ifdef ETH_P_IEEEPUPAT
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34 | __PF(IEEEPUPAT,ieeepupat)
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35 | #endif
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36 | __PF(DEC,dec)
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37 | __PF(DNA_DL,dna_dl)
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38 | __PF(DNA_RC,dna_rc)
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39 | __PF(DNA_RT,dna_rt)
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40 | __PF(LAT,lat)
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41 | __PF(DIAG,diag)
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42 | __PF(CUST,cust)
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43 | __PF(SCA,sca)
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44 | __PF(RARP,rarp)
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45 | __PF(ATALK,atalk)
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46 | __PF(AARP,aarp)
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47 | __PF(IPX,ipx)
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48 | __PF(IPV6,ipv6)
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49 | #ifdef ETH_P_PPP_DISC
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50 | __PF(PPP_DISC,ppp_disc)
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51 | #endif
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52 | #ifdef ETH_P_PPP_SES
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53 | __PF(PPP_SES,ppp_ses)
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54 | #endif
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55 | #ifdef ETH_P_ATMMPOA
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56 | __PF(ATMMPOA,atmmpoa)
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57 | #endif
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58 | #ifdef ETH_P_ATMFATE
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59 | __PF(ATMFATE,atmfate)
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60 | #endif
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61 |
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62 | __PF(802_3,802_3)
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63 | __PF(AX25,ax25)
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64 | __PF(ALL,all)
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65 | __PF(802_2,802_2)
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66 | __PF(SNAP,snap)
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67 | __PF(DDCMP,ddcmp)
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68 | __PF(WAN_PPP,wan_ppp)
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69 | __PF(PPP_MP,ppp_mp)
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70 | __PF(LOCALTALK,localtalk)
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71 | __PF(PPPTALK,ppptalk)
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72 | __PF(TR_802_2,tr_802_2)
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73 | __PF(MOBITEX,mobitex)
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74 | __PF(CONTROL,control)
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75 | __PF(IRDA,irda)
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76 | #ifdef ETH_P_ECONET
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77 | __PF(ECONET,econet)
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78 | #endif
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79 |
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80 | 0x8100,
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81 | ETH_P_IP
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82 | };
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83 | #undef __PF
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84 |
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85 | /* Keep declarations above and below in sync! */
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86 |
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87 | static const char llproto_names[] =
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88 | #define __PF(f,n) #n "\0"
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89 | __PF(LOOP,loop)
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90 | __PF(PUP,pup)
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91 | #ifdef ETH_P_PUPAT
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92 | __PF(PUPAT,pupat)
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93 | #endif
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94 | __PF(IP,ip)
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95 | __PF(X25,x25)
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96 | __PF(ARP,arp)
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97 | __PF(BPQ,bpq)
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98 | #ifdef ETH_P_IEEEPUP
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99 | __PF(IEEEPUP,ieeepup)
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100 | #endif
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101 | #ifdef ETH_P_IEEEPUPAT
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102 | __PF(IEEEPUPAT,ieeepupat)
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103 | #endif
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104 | __PF(DEC,dec)
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105 | __PF(DNA_DL,dna_dl)
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106 | __PF(DNA_RC,dna_rc)
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107 | __PF(DNA_RT,dna_rt)
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108 | __PF(LAT,lat)
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109 | __PF(DIAG,diag)
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110 | __PF(CUST,cust)
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111 | __PF(SCA,sca)
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112 | __PF(RARP,rarp)
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113 | __PF(ATALK,atalk)
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114 | __PF(AARP,aarp)
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115 | __PF(IPX,ipx)
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116 | __PF(IPV6,ipv6)
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117 | #ifdef ETH_P_PPP_DISC
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118 | __PF(PPP_DISC,ppp_disc)
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119 | #endif
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120 | #ifdef ETH_P_PPP_SES
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121 | __PF(PPP_SES,ppp_ses)
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122 | #endif
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123 | #ifdef ETH_P_ATMMPOA
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124 | __PF(ATMMPOA,atmmpoa)
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125 | #endif
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126 | #ifdef ETH_P_ATMFATE
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127 | __PF(ATMFATE,atmfate)
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128 | #endif
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129 |
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130 | __PF(802_3,802_3)
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131 | __PF(AX25,ax25)
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132 | __PF(ALL,all)
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133 | __PF(802_2,802_2)
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134 | __PF(SNAP,snap)
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135 | __PF(DDCMP,ddcmp)
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136 | __PF(WAN_PPP,wan_ppp)
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137 | __PF(PPP_MP,ppp_mp)
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138 | __PF(LOCALTALK,localtalk)
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139 | __PF(PPPTALK,ppptalk)
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140 | __PF(TR_802_2,tr_802_2)
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141 | __PF(MOBITEX,mobitex)
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142 | __PF(CONTROL,control)
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143 | __PF(IRDA,irda)
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144 | #ifdef ETH_P_ECONET
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145 | __PF(ECONET,econet)
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146 | #endif
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147 |
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148 | "802.1Q" "\0"
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149 | "ipv4" "\0"
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150 | ;
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151 | #undef __PF
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152 |
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153 |
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154 | const char* FAST_FUNC ll_proto_n2a(unsigned short id, char *buf, int len)
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155 | {
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156 | unsigned i;
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157 | id = ntohs(id);
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158 | for (i = 0; i < ARRAY_SIZE(llproto_ids); i++) {
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159 | if (llproto_ids[i] == id)
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160 | return nth_string(llproto_names, i);
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161 | }
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162 | snprintf(buf, len, "[%u]", id);
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163 | return buf;
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164 | }
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165 |
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166 | int FAST_FUNC ll_proto_a2n(unsigned short *id, char *buf)
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167 | {
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168 | unsigned i;
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169 | const char *name = llproto_names;
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170 | for (i = 0; i < ARRAY_SIZE(llproto_ids); i++) {
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171 | if (strcasecmp(name, buf) == 0) {
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172 | i = llproto_ids[i];
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173 | goto good;
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174 | }
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175 | name += strlen(name) + 1;
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176 | }
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177 | errno = 0;
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178 | i = bb_strtou(buf, NULL, 0);
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179 | if (errno || i > 0xffff)
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180 | return -1;
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181 | good:
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182 | *id = htons(i);
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183 | return 0;
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184 | }
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