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 },
33 static 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
ll_proto_n2a(unsigned short id,char * buf,int len)89 const 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
ll_proto_a2n(unsigned short * id,char * buf)103 int 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