print-msnlb.c revision 313537 
1/*
2 * Copyright (c) 2013 Romain Francoise <romain@orebokech.com>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 * 3. Neither the name of the project nor the names of its contributors
13 *    may be used to endorse or promote products derived from this software
14 *    without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29/* \summary: MS Network Load Balancing's (NLB) heartbeat printer */
30
31#ifdef HAVE_CONFIG_H
32#include "config.h"
33#endif
34
35#include <netdissect-stdinc.h>
36
37#include "netdissect.h"
38#include "addrtoname.h"
39#include "extract.h"
40
41struct msnlb_heartbeat_pkt {
42	uint32_t unknown1;
43	uint32_t unknown2;
44	uint32_t host_prio;	/* little-endian */
45	uint32_t virtual_ip;
46	uint32_t host_ip;
47	/* the protocol is undocumented so we ignore the rest */
48};
49
50void
51msnlb_print(netdissect_options *ndo, const u_char *bp)
52{
53	const struct msnlb_heartbeat_pkt *hb;
54
55	hb = (const struct msnlb_heartbeat_pkt *)bp;
56	ND_TCHECK(*hb);
57
58	ND_PRINT((ndo, "MS NLB heartbeat, host priority: %u,",
59		EXTRACT_LE_32BITS(&(hb->host_prio))));
60	ND_PRINT((ndo, " cluster IP: %s,", ipaddr_string(ndo, &(hb->virtual_ip))));
61	ND_PRINT((ndo, " host IP: %s", ipaddr_string(ndo, &(hb->host_ip))));
62	return;
63trunc:
64	ND_PRINT((ndo, "[|MS NLB]"));
65}
66