# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#
-# @(#) $Header: /tcpdump/master/tcpdump/Makefile.in,v 1.251 2001-06-12 05:17:16 guy Exp $ (LBL)
+# @(#) $Header: /tcpdump/master/tcpdump/Makefile.in,v 1.252 2001-06-21 17:56:02 itojun Exp $ (LBL)
#
# Various configurable paths (remember to edit Makefile.in, not Makefile)
print-igrp.c print-ip.c print-ipcomp.c print-ipx.c \
print-isakmp.c print-isoclns.c print-krb.c print-l2tp.c \
print-lane.c print-lcp.c print-llc.c print-lwres.c \
- print-mobile.c print-nfs.c print-ntp.c print-null.c \
+ print-mobile.c print-mpls.c print-nfs.c print-ntp.c print-null.c \
print-ospf.c print-pim.c print-ppp.c print-pppoe.c \
print-pptp.c print-radius.c print-raw.c print-rip.c \
print-rx.c print-sctp.c print-sl.c print-sll.c print-smb.c \
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
- * @(#) $Header: /tcpdump/master/tcpdump/interface.h,v 1.162 2001-06-20 07:40:44 guy Exp $ (LBL)
+ * @(#) $Header: /tcpdump/master/tcpdump/interface.h,v 1.163 2001-06-21 17:56:03 itojun Exp $ (LBL)
*/
#ifndef tcpdump_interface_h
extern void lwres_print(const u_char *, u_int);
extern void pptp_print(const u_char *, u_int);
extern void sctp_print(const u_char *, const u_char *, u_int);
+extern void mpls_print(const u_char *, u_int);
#ifdef INET6
extern void ip6_print(const u_char *, int);
--- /dev/null
+/*
+ * Copyright (C) 2001 WIDE Project. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static const char rcsid[] =
+ "@(#) $Header: /tcpdump/master/tcpdump/print-mpls.c,v 1.1 2001-06-21 17:56:04 itojun Exp $ (LBL)";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/socket.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "addrtoname.h"
+#include "interface.h"
+#include "extract.h" /* must come after interface.h */
+
+#define LABEL_MASK 0xfffff000
+#define LABEL_SHIFT 12
+#define EXP_MASK 0x00000e00
+#define EXP_SHIFT 9
+#define STACK_MASK 0x00000100
+#define STACK_SHIFT 8
+#define TTL_MASK 0x000000ff
+#define TTL_SHIFT 0
+
+#define MPLS_LABEL(x) (((x) & LABEL_MASK) >> LABEL_SHIFT)
+#define MPLS_EXP(x) (((x) & EXP_MASK) >> EXP_SHIFT)
+#define MPLS_STACK(x) (((x) & STACK_MASK) >> STACK_SHIFT)
+#define MPLS_TTL(x) (((x) & TTL_MASK) >> TTL_SHIFT)
+
+static const char *mpls_labelname[] = {
+/*0*/ "IPv4 explicit NULL", "router alert", "IPv6 explicit NULL",
+ "implicit NULL", "rsvd",
+/*5*/ "rsvd", "rsvd", "rsvd", "rsvd", "rsvd",
+/*10*/ "rsvd", "rsvd", "rsvd", "rsvd", "rsvd",
+/*15*/ "rsvd",
+};
+
+/*
+ * RFC3032: MPLS label stack encoding
+ */
+void
+mpls_print(const u_char *bp, u_int length)
+{
+ const u_char *p;
+ u_int32_t v;
+
+ p = bp;
+ printf("MPLS");
+ TCHECK2(*p, sizeof(v));
+ memcpy(&v, p, sizeof(v));
+ v = (u_int32_t)ntohl(v);
+ printf(" ("); /*)*/
+ printf("label 0x%x", MPLS_LABEL(v));
+ if (vflag &&
+ MPLS_LABEL(v) < sizeof(mpls_labelname) / sizeof(mpls_labelname[0]))
+ printf("(%s)", mpls_labelname[MPLS_LABEL(v)]);
+ if (MPLS_EXP(v))
+ printf(" exp 0x%x", MPLS_EXP(v));
+ if (MPLS_STACK(v))
+ printf("[S]");
+ printf(" TTL %u", MPLS_TTL(v));
+ /*(*/
+ printf(")");
+
+ p += sizeof(v);
+
+ switch (MPLS_LABEL(v)) {
+ case 0: /* IPv4 explicit NULL label */
+ ip_print(p, length - (p - bp));
+ break;
+#ifdef INET6
+ case 2: /* IPv6 explicit NULL label */
+ ip6_print(p, length - (p - bp));
+ break;
+#endif
+ default:
+ /*
+ * Since there's no indication of protocol in MPLS label
+ * encoding, we can print nothing further.
+ */
+ return;
+ }
+
+trunc:
+ printf("[|MPLS]");
+}
projects / tcpdump / commitdiff
