LXR iproute2/lib/ll

   1/*
   2 * ll_proto.c
   3 *
   4 *              This program is free software; you can redistribute it and/or
   5 *              modify it under the terms of the GNU General Public License
   6 *              as published by the Free Software Foundation; either version
   7 *              2 of the License, or (at your option) any later version.
   8 *
   9 * Authors:     Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
  10 */
  11
  12#include <stdio.h>
  13#include <stdlib.h>
  14#include <unistd.h>
  15#include <fcntl.h>
  16#include <sys/ioctl.h>
  17#include <sys/socket.h>
  18#include <netinet/in.h>
  19#include <arpa/inet.h>
  20#include <string.h>
  21
  22#include <linux/netdevice.h>
  23#include <linux/if_arp.h>
  24#include <linux/sockios.h>
  25
  26#include "utils.h"
  27#include "rt_names.h"
  28
  29
  30#define __PF(f,n) { ETH_P_##f, #n },
  31static const struct {
  32        int id;
  33        const char *name;
  34} llproto_names[] = {
  35__PF(LOOP,loop)
  36__PF(PUP,pup)
  37__PF(PUPAT,pupat)
  38__PF(IP,ip)
  39__PF(X25,x25)
  40__PF(ARP,arp)
  41__PF(BPQ,bpq)
  42__PF(IEEEPUP,ieeepup)
  43__PF(IEEEPUPAT,ieeepupat)
  44__PF(DEC,dec)
  45__PF(DNA_DL,dna_dl)
  46__PF(DNA_RC,dna_rc)
  47__PF(DNA_RT,dna_rt)
  48__PF(LAT,lat)
  49__PF(DIAG,diag)
  50__PF(CUST,cust)
  51__PF(SCA,sca)
  52__PF(RARP,rarp)
  53__PF(ATALK,atalk)
  54__PF(AARP,aarp)
  55__PF(IPX,ipx)
  56__PF(IPV6,ipv6)
  57__PF(PPP_DISC,ppp_disc)
  58__PF(PPP_SES,ppp_ses)
  59__PF(ATMMPOA,atmmpoa)
  60__PF(ATMFATE,atmfate)
  61__PF(802_3,802_3)
  62__PF(AX25,ax25)
  63__PF(ALL,all)
  64__PF(802_2,802_2)
  65__PF(SNAP,snap)
  66__PF(DDCMP,ddcmp)
  67__PF(WAN_PPP,wan_ppp)
  68__PF(PPP_MP,ppp_mp)
  69__PF(LOCALTALK,localtalk)
  70__PF(CAN,can)
  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__PF(ECONET,econet)
  77__PF(TIPC,tipc)
  78__PF(AOE,aoe)
  79__PF(8021Q,802.1Q)
  80__PF(8021AD,802.1ad)
  81__PF(MPLS_UC,mpls_uc)
  82__PF(MPLS_MC,mpls_mc)
  83__PF(TEB,teb)
  84
  85{ 0x8100, "802.1Q" },
  86{ 0x88cc, "LLDP" },
  87{ ETH_P_IP, "ipv4" },
  88};
  89#undef __PF
  90
  91
  92const char * ll_proto_n2a(unsigned short id, char *buf, int len)
  93{
  94        int i;
  95
  96        id = ntohs(id);
  97
  98        for (i=0; !numeric && i<sizeof(llproto_names)/sizeof(llproto_names[0]); i++) {
  99                 if (llproto_names[i].id == id)
 100                        return llproto_names[i].name;
 101        }
 102        snprintf(buf, len, "[%d]", id);
 103        return buf;
 104}
 105
 106int ll_proto_a2n(unsigned short *id, const char *buf)
 107{
 108        int i;
 109        for (i=0; i < sizeof(llproto_names)/sizeof(llproto_names[0]); i++) {
 110                 if (strcasecmp(llproto_names[i].name, buf) == 0) {
 111                         *id = htons(llproto_names[i].id);
 112                         return 0;
 113                 }
 114        }
 115        if (get_be16(id, buf, 0))
 116                return -1;
 117        return 0;
 118}
 119