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 <syslog.h> 16#include <fcntl.h> 17#include <sys/ioctl.h> 18#include <sys/socket.h> 19#include <sys/ioctl.h> 20#include <netinet/in.h> 21#include <arpa/inet.h> 22#include <string.h> 23 24#include <linux/netdevice.h> 25#include <linux/if_arp.h> 26#include <linux/sockios.h> 27 28#include "utils.h" 29#include "rt_names.h" 30 31 32#define __PF(f,n) { ETH_P_##f, #n }, 33static struct { 34 int id; 35 const char *name; 36} llproto_names[] = { 37__PF(LOOP,loop) 38__PF(PUP,pup) 39#ifdef ETH_P_PUPAT 40__PF(PUPAT,pupat) 41#endif 42__PF(IP,ip) 43__PF(X25,x25) 44__PF(ARP,arp) 45__PF(BPQ,bpq) 46#ifdef ETH_P_IEEEPUP 47__PF(IEEEPUP,ieeepup) 48#endif 49#ifdef ETH_P_IEEEPUPAT 50__PF(IEEEPUPAT,ieeepupat) 51#endif 52__PF(DEC,dec) 53__PF(DNA_DL,dna_dl) 54__PF(DNA_RC,dna_rc) 55__PF(DNA_RT,dna_rt) 56__PF(LAT,lat) 57__PF(DIAG,diag) 58__PF(CUST,cust) 59__PF(SCA,sca) 60__PF(RARP,rarp) 61__PF(ATALK,atalk) 62__PF(AARP,aarp) 63__PF(IPX,ipx) 64__PF(IPV6,ipv6) 65#ifdef ETH_P_PPP_DISC 66__PF(PPP_DISC,ppp_disc) 67#endif 68#ifdef ETH_P_PPP_SES 69__PF(PPP_SES,ppp_ses) 70#endif 71#ifdef ETH_P_ATMMPOA 72__PF(ATMMPOA,atmmpoa) 73#endif 74#ifdef ETH_P_ATMFATE 75__PF(ATMFATE,atmfate) 76#endif 77 78__PF(802_3,802_3) 79__PF(AX25,ax25) 80__PF(ALL,all) 81__PF(802_2,802_2) 82__PF(SNAP,snap) 83__PF(DDCMP,ddcmp) 84__PF(WAN_PPP,wan_ppp) 85__PF(PPP_MP,ppp_mp) 86__PF(LOCALTALK,localtalk) 87__PF(CAN,can) 88__PF(PPPTALK,ppptalk) 89__PF(TR_802_2,tr_802_2) 90__PF(MOBITEX,mobitex) 91__PF(CONTROL,control) 92__PF(IRDA,irda) 93#ifdef ETH_P_ECONET 94__PF(ECONET,econet) 95#endif 96__PF(TIPC,tipc) 97__PF(AOE,aoe) 98 99{ 0x8100, "802.1Q" }, 100{ ETH_P_IP, "ipv4" }, 101}; 102#undef __PF 103 104 105const char * ll_proto_n2a(unsigned short id, char *buf, int len) 106{ 107 int i; 108 109 id = ntohs(id); 110 111 for (i=0; i<sizeof(llproto_names)/sizeof(llproto_names[0]); i++) { 112 if (llproto_names[i].id == id) 113 return llproto_names[i].name; 114 } 115 snprintf(buf, len, "[%d]", id); 116 return buf; 117} 118 119int ll_proto_a2n(unsigned short *id, char *buf) 120{ 121 int i; 122 for (i=0; i<sizeof(llproto_names)/sizeof(llproto_names[0]); i++) { 123 if (strcasecmp(llproto_names[i].name, buf) == 0) { 124 *id = htons(llproto_names[i].id); 125 return 0; 126 } 127 } 128 if (get_u16(id, buf, 0)) 129 return -1; 130 *id = htons(*id); 131 return 0; 132} 133