forked from osmocom/wireshark
133 lines
3.6 KiB
C
133 lines
3.6 KiB
C
/* packet-hpext.c
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* Routines for HP extended IEEE 802.2 LLC layer
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* Jochen Friedrich <jochen@scram.de>
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*
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* $Id: packet-hpext.c,v 1.1 2003/03/02 21:52:16 guy Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <glib.h>
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#include <epan/packet.h>
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#include "xdlc.h"
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#include "etypes.h"
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#include "llcsaps.h"
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#include "packet-hpext.h"
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static dissector_table_t subdissector_table;
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static dissector_handle_t data_handle;
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static int proto_hpext = -1;
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static int hf_hpext_dxsap = -1;
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static int hf_hpext_sxsap = -1;
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static gint ett_hpext = -1;
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const value_string xsap_vals[] = {
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{ HPEXT_DXSAP, "RBOOT Destination Service Access Point" },
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{ HPEXT_SXSAP, "RBOOT Source Service Access Point" },
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{ HPEXT_SNMP, "SNMP" },
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{ 0x00, NULL }
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};
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static void
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dissect_hpext(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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proto_tree *hpext_tree = NULL;
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proto_item *ti = NULL;
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guint16 dxsap, sxsap;
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tvbuff_t *next_tvb;
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if (check_col(pinfo->cinfo, COL_PROTOCOL)) {
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "HPEXT");
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}
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dxsap = tvb_get_ntohs(tvb, 3);
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sxsap = tvb_get_ntohs(tvb, 5);
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if (tree) {
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ti = proto_tree_add_item(tree, proto_hpext, tvb, 0, 7, FALSE);
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hpext_tree = proto_item_add_subtree(ti, ett_hpext);
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proto_tree_add_text(hpext_tree, tvb, 0, 3, "Reserved");
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proto_tree_add_uint(hpext_tree, hf_hpext_dxsap, tvb, 3,
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2, dxsap);
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proto_tree_add_uint(hpext_tree, hf_hpext_sxsap, tvb, 5,
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2, sxsap);
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}
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if (check_col(pinfo->cinfo, COL_INFO))
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col_append_fstr(pinfo->cinfo, COL_INFO,
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"; HPEXT; DXSAP %s, SXSAP %s",
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val_to_str(dxsap, xsap_vals, "%04x"),
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val_to_str(sxsap, xsap_vals, "%04x"));
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if (tvb_length_remaining(tvb, 7) > 0) {
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next_tvb = tvb_new_subset(tvb, 7, -1, -1);
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if (!dissector_try_port(subdissector_table,
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dxsap, next_tvb, pinfo, tree)) {
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call_dissector(data_handle, next_tvb, pinfo, tree);
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}
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}
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}
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void
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proto_register_hpext(void)
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{
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static hf_register_info hf[] = {
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{ &hf_hpext_dxsap,
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{ "DXSAP", "hpext.dxsap", FT_UINT16, BASE_HEX,
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VALS(xsap_vals), 0x0, "", HFILL }},
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{ &hf_hpext_sxsap,
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{ "SXSAP", "hpext.sxsap", FT_UINT16, BASE_HEX,
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VALS(xsap_vals), 0x0, "", HFILL }},
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};
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static gint *ett[] = {
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&ett_hpext,
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};
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proto_hpext = proto_register_protocol(
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"HP Extended Local-Link Control", "HPEXT", "hpext");
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proto_register_field_array(proto_hpext, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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/* subdissector code */
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subdissector_table = register_dissector_table("hpext.dxsap",
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"HPEXT XSAP", FT_UINT16, BASE_HEX);
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register_dissector("hpext", dissect_hpext, proto_hpext);
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}
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void
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proto_reg_handoff_hpext(void)
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{
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dissector_handle_t hpext_handle;
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data_handle = find_dissector("data");
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hpext_handle = find_dissector("hpext");
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dissector_add("llc.dsap", SAP_HPEXT, hpext_handle);
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}
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