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 #define NETDISSECT_REWORKED
30 #ifdef HAVE_CONFIG_H
31 #include "config.h"
32 #endif
33
34 #include <tcpdump-stdinc.h>
35
36 #include "interface.h"
37 #include "addrtoname.h"
38 #include "extract.h"
39
40 struct msnlb_heartbeat_pkt {
41 uint32_t unknown1;
42 uint32_t unknown2;
43 uint32_t host_prio; /* little-endian */
44 uint32_t virtual_ip;
45 uint32_t host_ip;
46 /* the protocol is undocumented so we ignore the rest */
47 };
48
49 void
msnlb_print(netdissect_options * ndo,const u_char * bp)50 msnlb_print(netdissect_options *ndo, const u_char *bp)
51 {
52 const struct msnlb_heartbeat_pkt *hb;
53
54 hb = (struct msnlb_heartbeat_pkt *)bp;
55 ND_TCHECK(*hb);
56
57 ND_PRINT((ndo, "MS NLB heartbeat, host priority: %u,",
58 EXTRACT_LE_32BITS(&(hb->host_prio))));
59 ND_PRINT((ndo, " cluster IP: %s,", ipaddr_string(ndo, &(hb->virtual_ip))));
60 ND_PRINT((ndo, " host IP: %s", ipaddr_string(ndo, &(hb->host_ip))));
61 return;
62 trunc:
63 ND_PRINT((ndo, "[|MS NLB]"));
64 }
65