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 41 struct 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 50 void 51 msnlb_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; 63 trunc: 64 ND_PRINT((ndo, "[|MS NLB]")); 65 } 66