networking/libiproute/ll_proto.c

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