2 * Copyright (c) 2001 William C. Fenner.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code
7 * distributions retain the above copyright notice and this paragraph
8 * in its entirety, and (2) distributions including binary code include
9 * the above copyright notice and this paragraph in its entirety in
10 * the documentation or other materials provided with the distribution.
11 * The name of William C. Fenner may not be used to endorse or
12 * promote products derived from this software without specific prior
13 * written permission. THIS SOFTWARE IS PROVIDED ``AS IS'' AND
14 * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
15 * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
16 * FOR A PARTICULAR PURPOSE.
19 static const char rcsid[] =
20 "@(#) $Header: /tcpdump/master/tcpdump/print-msdp.c,v 1.2 2001/12/10 08:06:40 guy Exp $";
31 #include <netinet/in.h>
33 #include "interface.h"
34 #include "addrtoname.h"
37 #define MSDP_TYPE_MAX 7
40 msdp_print(const unsigned char *sp, u_int length)
42 unsigned int type, len;
45 /* See if we think we're at the beginning of a compound packet */
47 len = EXTRACT_16BITS(sp + 1);
48 if (len > 1500 || len < 3 || type == 0 || type > MSDP_TYPE_MAX)
49 goto trunc; /* not really truncated, but still not decodable */
50 (void)printf(" msdp:");
54 len = EXTRACT_16BITS(sp + 1);
55 if (len > 1400 || vflag)
56 printf(" [len %d]", len);
62 case 1: /* IPv4 Source-Active */
63 case 3: /* IPv4 Source-Active Response */
67 (void)printf(" SA-Response");
69 (void)printf(" %d entries", *sp);
70 if (*sp * 12 + 8 < len) {
71 (void)printf(" [w/data]");
74 ip_print(sp + *sp * 12 + 8 - 3,
75 len - (*sp * 12 + 8));
80 (void)printf(" SA-Request");
82 (void)printf(" for %s", ipaddr_string(sp + 1));
85 (void)printf(" Keepalive");
87 (void)printf("[len=%d] ", len);
90 (void)printf(" Notification");
93 (void)printf(" [type=%d len=%d]", type, len);
101 (void)printf(" [|msdp]");