Add a new Wiretap encapsulation type for Cisco HDLC. Map the NetBSD

DLT_HDLC to it.

Make a separate dissector for Cisco HDLC, and add a dissector for Cisco
SLARP.  Have the PPP dissector call the Cisco HDLC dissector if the
address field is the Cisco HDLC unicast or multicast address.  Use the
Cisco HDLC dissector for the Cisco HDLC Wiretap encapsulation type.

Add a new dissector table "chdlctype", for Cisco HDLC packet types
(they're *almost* the same as Ethernet types, but 0x8035 is SLARP, not
Reverse ARP, and 0x2000 is the Cisco Discovery protocol, for example),
replacing "fr.chdlc".

Have a "chdlctype()" routine, similar to "ethertype()", used both by the
Cisco HDLC and Frame Relay dissectors.  Have a "chdlc_vals[]"
"value_string" table for Cisco HDLC types and protocol names.  Split the
packet type field in the Frame Relay dissector into separate SNAP and
Cisco HDLC fields, and give them the Ethernet type and Cisco HDLC type
"value_string" tables, respectively.

svn path=/trunk/; revision=3133

1 files changed, 46 insertions, 0 deletions

diff --git a/packet-chdlc.h b/packet-chdlc.h
new file mode 100644
index 0000000000..361be8a1b1
--- /dev/null
+++ b/packet-chdlc.h
@@ -0,0 +1,46 @@
+/* packet-chdlc.h
+ *
+ * $Id: packet-chdlc.h,v 1.1 2001/03/15 09:11:00 guy Exp $
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@zing.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#ifndef __PACKET_CHDLC_H__
+#define __PACKET_CHDLC_H__
+
+/*
+ * See section 4.3.1 of RFC 1547, and
+ *
+ *	http://www.nethelp.no/net/cisco-hdlc.txt
+ */
+
+#define CHDLC_ADDR_UNICAST	0x0f
+#define CHDLC_ADDR_MULTICAST	0x8f
+
+void capture_chdlc(const u_char *, int, packet_counts *);
+
+const value_string chdlc_vals[];
+
+void
+chdlctype(guint16 chdlctype, tvbuff_t *tvb, int offset_after_chdlctype,
+	  packet_info *pinfo, proto_tree *tree, proto_tree *fh_tree,
+	  int chdlctype_id);
+
+#endif