1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * ll_proto.c
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4 | *
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5 | * This program is free software; you can redistribute it and/or
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6 | * modify it under the terms of the GNU General Public License
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7 | * as published by the Free Software Foundation; either version
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8 | * 2 of the License, or (at your option) any later version.
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9 | *
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10 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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11 | */
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12 |
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13 | #include "libbb.h"
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14 | #include "rt_names.h"
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15 | #include "utils.h"
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16 |
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17 | #if defined(__GLIBC__) && __GLIBC__ >=2 && __GLIBC_MINOR__ >= 1
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18 | #include <net/ethernet.h>
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19 | #else
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20 | #include <linux/if_ether.h>
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21 | #endif
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22 |
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23 | #define __PF(f,n) { ETH_P_##f, #n },
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24 | static struct {
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25 | int id;
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26 | const char *name;
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27 | } llproto_names[] = {
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28 | __PF(LOOP,loop)
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29 | __PF(PUP,pup)
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30 | #ifdef ETH_P_PUPAT
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31 | __PF(PUPAT,pupat)
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32 | #endif
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33 | __PF(IP,ip)
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34 | __PF(X25,x25)
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35 | __PF(ARP,arp)
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36 | __PF(BPQ,bpq)
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37 | #ifdef ETH_P_IEEEPUP
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38 | __PF(IEEEPUP,ieeepup)
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39 | #endif
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40 | #ifdef ETH_P_IEEEPUPAT
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41 | __PF(IEEEPUPAT,ieeepupat)
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42 | #endif
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43 | __PF(DEC,dec)
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44 | __PF(DNA_DL,dna_dl)
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45 | __PF(DNA_RC,dna_rc)
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46 | __PF(DNA_RT,dna_rt)
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47 | __PF(LAT,lat)
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48 | __PF(DIAG,diag)
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49 | __PF(CUST,cust)
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50 | __PF(SCA,sca)
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51 | __PF(RARP,rarp)
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52 | __PF(ATALK,atalk)
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53 | __PF(AARP,aarp)
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54 | __PF(IPX,ipx)
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55 | __PF(IPV6,ipv6)
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56 | #ifdef ETH_P_PPP_DISC
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57 | __PF(PPP_DISC,ppp_disc)
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58 | #endif
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59 | #ifdef ETH_P_PPP_SES
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60 | __PF(PPP_SES,ppp_ses)
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61 | #endif
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62 | #ifdef ETH_P_ATMMPOA
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63 | __PF(ATMMPOA,atmmpoa)
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64 | #endif
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65 | #ifdef ETH_P_ATMFATE
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66 | __PF(ATMFATE,atmfate)
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67 | #endif
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68 |
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69 | __PF(802_3,802_3)
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70 | __PF(AX25,ax25)
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71 | __PF(ALL,all)
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72 | __PF(802_2,802_2)
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73 | __PF(SNAP,snap)
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74 | __PF(DDCMP,ddcmp)
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75 | __PF(WAN_PPP,wan_ppp)
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76 | __PF(PPP_MP,ppp_mp)
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77 | __PF(LOCALTALK,localtalk)
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78 | __PF(PPPTALK,ppptalk)
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79 | __PF(TR_802_2,tr_802_2)
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80 | __PF(MOBITEX,mobitex)
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81 | __PF(CONTROL,control)
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82 | __PF(IRDA,irda)
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83 | #ifdef ETH_P_ECONET
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84 | __PF(ECONET,econet)
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85 | #endif
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86 |
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87 | { 0x8100, "802.1Q" },
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88 | { ETH_P_IP, "ipv4" },
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89 | };
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90 | #undef __PF
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91 |
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92 |
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93 | const char * ll_proto_n2a(unsigned short id, char *buf, int len)
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94 | {
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95 | int i;
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96 |
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97 | id = ntohs(id);
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98 |
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99 | for (i=0; i < ARRAY_SIZE(llproto_names); i++) {
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100 | if (llproto_names[i].id == id)
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101 | return llproto_names[i].name;
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102 | }
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103 | snprintf(buf, len, "[%d]", id);
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104 | return buf;
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105 | }
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106 |
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107 | int ll_proto_a2n(unsigned short *id, char *buf)
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108 | {
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109 | int i;
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110 | for (i=0; i < ARRAY_SIZE(llproto_names); i++) {
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111 | if (strcasecmp(llproto_names[i].name, buf) == 0) {
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112 | *id = htons(llproto_names[i].id);
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113 | return 0;
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114 | }
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115 | }
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116 | if (get_u16(id, buf, 0))
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117 | return -1;
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118 | *id = htons(*id);
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119 | return 0;
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120 | }
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