source: libpacketdump/ospf2_1000.c @ 1de522d

4.0.1-hotfixescachetimestampsdevelopdpdk-ndagetsilivendag_formatrc-4.0.1rc-4.0.2rc-4.0.3rc-4.0.4ringdecrementfixringperformanceringtimestampfixes
Last change on this file since 1de522d was ee6e802, checked in by Shane Alcock <salcock@…>, 5 years ago

Updated copyright blurb on all source files

In some cases, this meant adding copyright blurbs to files that
had never had them before.

  • Property mode set to 100644
File size: 2.5 KB
Line 
1/*
2 *
3 * Copyright (c) 2007-2016 The University of Waikato, Hamilton, New Zealand.
4 * All rights reserved.
5 *
6 * This file is part of libtrace.
7 *
8 * This code has been developed by the University of Waikato WAND
9 * research group. For further information please see http://www.wand.net.nz/
10 *
11 * libtrace is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU Lesser General Public License as published by
13 * the Free Software Foundation; either version 3 of the License, or
14 * (at your option) any later version.
15 *
16 * libtrace is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19 * GNU Lesser General Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser General Public License
22 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
23 *
24 *
25 */
26#include <sys/types.h>
27#include <sys/socket.h>
28#include <netinet/in.h>
29#include <stdio.h>
30#include <arpa/inet.h>
31#include "libpacketdump.h"
32
33/* Decoder for an LSA header */
34
35DLLEXPORT void decode(int link_type UNUSED,const char *packet,unsigned len) {
36
37        libtrace_ospf_lsa_v2_t *lsa = (libtrace_ospf_lsa_v2_t *)packet;
38
39        if (len < 2)
40                return;
41        printf(" OSPF LSA: Age %u ", ntohs(lsa->age)); 
42
43        if (len < 3)
44                return;
45        printf("Options ");
46
47        if (lsa->lsa_options.e_bit)
48                printf("E ");
49        if (lsa->lsa_options.mc_bit)
50                printf("MC ");
51        if (lsa->lsa_options.np_bit)
52                printf("N/P ");
53        if (lsa->lsa_options.ea_bit)
54                printf("EA ");
55        if (lsa->lsa_options.dc_bit)
56                printf("DC ");
57        printf("\n");
58
59        if (len < 4)
60                return;
61        printf(" OSPF LSA: LS Type %u ", lsa->lsa_type);
62        switch(lsa->lsa_type) {
63                case 1:
64                        printf("(Router LSA)\n");
65                        break;
66                case 2:
67                        printf("(Network LSA)\n");
68                        break;
69                case 3:
70                        printf("(Summary LSA - IP)\n");
71                        break;
72                case 4:
73                        printf("(Summary LSA - ASBR)\n");
74                        break;
75                case 5:
76                        printf("(AS External LSA)\n");
77                        break;
78                default:
79                        printf("(Unknown)\n");
80        }
81       
82        if (len < 8)
83                return;
84       
85        printf(" OSPF LSA: Link State ID %s ", inet_ntoa(lsa->ls_id));
86
87        if (len < 12) {
88                printf("\n");
89                return;
90        }
91
92        printf("Advertising Router %s\n", inet_ntoa(lsa->adv_router));
93
94        if (len < 16)
95                return;
96
97        printf(" OSPF LSA: Seq %u ", ntohl(lsa->seq));
98
99        if (len < 18) {
100                printf("\n");
101                return;
102        }
103
104        printf("Checksum %u ", ntohs(lsa->checksum));
105
106        if (len < 20) {
107                printf("\n");
108                return;
109        }
110
111        printf("Length %u \n", ntohs(lsa->length));
112}
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