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 <netinet/in.h>
20 #include <arpa/inet.h>
21 #include <string.h>
22
23 #include <linux/netdevice.h>
24 #include <linux/if_arp.h>
25 #include <linux/sockios.h>
26
27 #include "utils.h"
28 #include "rt_names.h"
29
30
31 #define __PF(f,n) { ETH_P_##f, #n },
32 static const struct {
33 int id;
34 const char *name;
35 } llproto_names[] = {
36 __PF(LOOP,loop)
37 __PF(PUP,pup)
38 __PF(PUPAT,pupat)
39 __PF(IP,ip)
40 __PF(X25,x25)
41 __PF(ARP,arp)
42 __PF(BPQ,bpq)
43 __PF(IEEEPUP,ieeepup)
44 __PF(IEEEPUPAT,ieeepupat)
45 __PF(DEC,dec)
46 __PF(DNA_DL,dna_dl)
47 __PF(DNA_RC,dna_rc)
48 __PF(DNA_RT,dna_rt)
49 __PF(LAT,lat)
50 __PF(DIAG,diag)
51 __PF(CUST,cust)
52 __PF(SCA,sca)
53 __PF(RARP,rarp)
54 __PF(ATALK,atalk)
55 __PF(AARP,aarp)
56 __PF(IPX,ipx)
57 __PF(IPV6,ipv6)
58 __PF(PPP_DISC,ppp_disc)
59 __PF(PPP_SES,ppp_ses)
60 __PF(ATMMPOA,atmmpoa)
61 __PF(ATMFATE,atmfate)
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(CAN,can)
72 __PF(PPPTALK,ppptalk)
73 __PF(TR_802_2,tr_802_2)
74 __PF(MOBITEX,mobitex)
75 __PF(CONTROL,control)
76 __PF(IRDA,irda)
77 __PF(ECONET,econet)
78 __PF(TIPC,tipc)
79 __PF(AOE,aoe)
80 __PF(8021Q,802.1Q)
81 __PF(8021AD,802.1ad)
82
83 { 0x8100, "802.1Q" },
84 { 0x88cc, "LLDP" },
85 { ETH_P_IP, "ipv4" },
86 };
87 #undef __PF
88
89
ll_proto_n2a(unsigned short id,char * buf,int len)90 const char * ll_proto_n2a(unsigned short id, char *buf, int len)
91 {
92 int i;
93
94 id = ntohs(id);
95
96 for (i=0; i<sizeof(llproto_names)/sizeof(llproto_names[0]); i++) {
97 if (llproto_names[i].id == id)
98 return llproto_names[i].name;
99 }
100 snprintf(buf, len, "[%d]", id);
101 return buf;
102 }
103
ll_proto_a2n(unsigned short * id,const char * buf)104 int ll_proto_a2n(unsigned short *id, const char *buf)
105 {
106 int i;
107 for (i=0; i < sizeof(llproto_names)/sizeof(llproto_names[0]); i++) {
108 if (strcasecmp(llproto_names[i].name, buf) == 0) {
109 *id = htons(llproto_names[i].id);
110 return 0;
111 }
112 }
113 if (get_be16(id, buf, 0))
114 return -1;
115 return 0;
116 }
117