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 const struct { 34 int id; 35 const char *name; 36} llproto_names[] = { 37__PF(LOOP,loop) 38__PF(PUP,pup) 39__PF(PUPAT,pupat) 40__PF(IP,ip) 41__PF(X25,x25) 42__PF(ARP,arp) 43__PF(BPQ,bpq) 44__PF(IEEEPUP,ieeepup) 45__PF(IEEEPUPAT,ieeepupat) 46__PF(DEC,dec) 47__PF(DNA_DL,dna_dl) 48__PF(DNA_RC,dna_rc) 49__PF(DNA_RT,dna_rt) 50__PF(LAT,lat) 51__PF(DIAG,diag) 52__PF(CUST,cust) 53__PF(SCA,sca) 54__PF(RARP,rarp) 55__PF(ATALK,atalk) 56__PF(AARP,aarp) 57__PF(IPX,ipx) 58__PF(IPV6,ipv6) 59__PF(PPP_DISC,ppp_disc) 60__PF(PPP_SES,ppp_ses) 61__PF(ATMMPOA,atmmpoa) 62__PF(ATMFATE,atmfate) 63__PF(802_3,802_3) 64__PF(AX25,ax25) 65__PF(ALL,all) 66__PF(802_2,802_2) 67__PF(SNAP,snap) 68__PF(DDCMP,ddcmp) 69__PF(WAN_PPP,wan_ppp) 70__PF(PPP_MP,ppp_mp) 71__PF(LOCALTALK,localtalk) 72__PF(CAN,can) 73__PF(PPPTALK,ppptalk) 74__PF(TR_802_2,tr_802_2) 75__PF(MOBITEX,mobitex) 76__PF(CONTROL,control) 77__PF(IRDA,irda) 78__PF(ECONET,econet) 79__PF(TIPC,tipc) 80__PF(AOE,aoe) 81 82{ 0x8100, "802.1Q" }, 83{ 0x88cc, "LLDP" }, 84{ ETH_P_IP, "ipv4" }, 85}; 86#undef __PF 87 88 89const char * ll_proto_n2a(unsigned short id, char *buf, int len) 90{ 91 int i; 92 93 id = ntohs(id); 94 95 for (i=0; i<sizeof(llproto_names)/sizeof(llproto_names[0]); i++) { 96 if (llproto_names[i].id == id) 97 return llproto_names[i].name; 98 } 99 snprintf(buf, len, "[%d]", id); 100 return buf; 101} 102 103int ll_proto_a2n(unsigned short *id, char *buf) 104{ 105 int i; 106 for (i=0; i<sizeof(llproto_names)/sizeof(llproto_names[0]); i++) { 107 if (strcasecmp(llproto_names[i].name, buf) == 0) { 108 *id = htons(llproto_names[i].id); 109 return 0; 110 } 111 } 112 if (get_u16(id, buf, 0)) 113 return -1; 114 *id = htons(*id); 115 return 0; 116} 117