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/* packet-lapbether.c
* Routines for lapbether frame disassembly
* Richard Sharpe <rsharpe@ns.aus.com> based on the lapb module by
* Olivier Abad <oabad@noos.fr>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/etypes.h>
void proto_register_lapbether(void);
void proto_reg_handoff_lapbether(void);
static int proto_lapbether = -1;
static int hf_lapbether_length = -1;
static gint ett_lapbether = -1;
static dissector_handle_t lapbether_handle;
static dissector_handle_t lapb_handle;
static int
dissect_lapbether(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
proto_tree *lapbether_tree, *ti;
int len;
tvbuff_t *next_tvb;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "LAPBETHER");
col_clear(pinfo->cinfo, COL_INFO);
len = tvb_get_guint8(tvb, 0) + tvb_get_guint8(tvb, 1) * 256;
if (tree) {
ti = proto_tree_add_protocol_format(tree, proto_lapbether, tvb, 0, 2,
"LAPBETHER");
lapbether_tree = proto_item_add_subtree(ti, ett_lapbether);
proto_tree_add_uint_format(lapbether_tree, hf_lapbether_length, tvb, 0, 2,
len, "Length: %u", len);
}
next_tvb = tvb_new_subset_length(tvb, 2, len);
call_dissector(lapb_handle, next_tvb, pinfo, tree);
return tvb_captured_length(tvb);
}
void
proto_register_lapbether(void)
{
static hf_register_info hf[] = {
{ &hf_lapbether_length,
{ "Length Field", "lapbether.length", FT_UINT16, BASE_DEC, NULL, 0x0,
"LAPBEther Length Field", HFILL }},
};
static gint *ett[] = {
&ett_lapbether,
};
proto_lapbether = proto_register_protocol ("Link Access Procedure Balanced Ethernet (LAPBETHER)",
"LAPBETHER", "lapbether");
proto_register_field_array (proto_lapbether, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
lapbether_handle = register_dissector("lapbether", dissect_lapbether, proto_lapbether);
}
/* The registration hand-off routine */
void
proto_reg_handoff_lapbether(void)
{
/*
* Get a handle for the LAPB dissector.
*/
lapb_handle = find_dissector_add_dependency("lapb", proto_lapbether);
dissector_add_uint("ethertype", ETHERTYPE_DEC, lapbether_handle);
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local Variables:
* c-basic-offset: 2
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=2 tabstop=8 expandtab:
* :indentSize=2:tabSize=8:noTabs=true:
*/
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