forked from osmocom/wireshark
f4b0abc729
They already know who they are when they register themselves. Saving the handle then to avoid finding it later. Not sure if this will increase unnecessary register_dissector functions (instead of using create_dissector_handle in proto_reg_handoff function) when other dissectors copy/paste, but it should make startup time a few microseconds better. Change-Id: I3839be791b32b84887ac51a6a65fb5733e9f1f43 Reviewed-on: https://code.wireshark.org/review/19481 Petri-Dish: Michael Mann <mmann78@netscape.net> Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org> Reviewed-by: Anders Broman <a.broman58@gmail.com>
142 lines
4.1 KiB
C
142 lines
4.1 KiB
C
/* packet-cimetrics.c
|
|
* Routines for Cimetrics LLC OUI dissection
|
|
* Copyright 2008 Steve Karg <skarg@users.sourceforge.net> Alabama
|
|
*
|
|
* Wireshark - Network traffic analyzer
|
|
* By Gerald Combs <gerald@wireshark.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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <epan/packet.h>
|
|
#include "packet-llc.h"
|
|
#include <epan/oui.h>
|
|
#include "packet-mstp.h"
|
|
|
|
void proto_register_cimetrics(void);
|
|
void proto_reg_handoff_cimetrics(void);
|
|
|
|
/* Probably should be a preference, but here for now */
|
|
#define BACNET_MSTP_SUMMARY_IN_TREE
|
|
|
|
/* the U+4 device does MS/TP, uLAN, Modbus */
|
|
static const value_string cimetrics_pid_vals[] = {
|
|
{ 0x0001, "U+4 MS/TP" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static int proto_cimetrics_mstp = -1;
|
|
static int hf_llc_cimetrics_pid = -1;
|
|
static gint ett_cimetrics_mstp = -1;
|
|
|
|
static int hf_cimetrics_mstp_timer = -1;
|
|
static int hf_cimetrics_mstp_value = -1;
|
|
|
|
static dissector_handle_t cimetric_handle;
|
|
|
|
static int
|
|
dissect_cimetrics_mstp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *subtree;
|
|
gint offset = 0;
|
|
#ifdef BACNET_MSTP_SUMMARY_IN_TREE
|
|
guint8 mstp_frame_type = 0;
|
|
guint8 mstp_frame_source = 0;
|
|
guint8 mstp_frame_destination = 0;
|
|
#endif
|
|
|
|
#ifdef BACNET_MSTP_SUMMARY_IN_TREE
|
|
mstp_frame_type = tvb_get_guint8(tvb, offset+3);
|
|
mstp_frame_destination = tvb_get_guint8(tvb, offset+4);
|
|
mstp_frame_source = tvb_get_guint8(tvb, offset+5);
|
|
ti = proto_tree_add_protocol_format(tree,
|
|
proto_cimetrics_mstp, tvb, offset, 9,
|
|
"BACnet MS/TP, Src (%u), Dst (%u), %s",
|
|
mstp_frame_source, mstp_frame_destination,
|
|
mstp_frame_type_text(mstp_frame_type));
|
|
#else
|
|
ti = proto_tree_add_item(tree, proto_cimetrics_mstp, tvb, offset, 9, ENC_NA);
|
|
#endif
|
|
subtree = proto_item_add_subtree(ti, ett_cimetrics_mstp);
|
|
proto_tree_add_item(subtree, hf_cimetrics_mstp_timer, tvb,
|
|
offset++, 2, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
proto_tree_add_item(subtree, hf_cimetrics_mstp_value, tvb,
|
|
offset++, 1, ENC_LITTLE_ENDIAN);
|
|
dissect_mstp(tvb, pinfo, tree, subtree, offset);
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
void
|
|
proto_register_cimetrics(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_cimetrics_mstp_timer,
|
|
{ "Delta Time", "cimetrics.mstp_timer",
|
|
FT_UINT16, BASE_DEC, NULL, 0,
|
|
"Milliseconds", HFILL }
|
|
},
|
|
{ &hf_cimetrics_mstp_value,
|
|
{ "8-bit value", "cimetrics.mstp_value",
|
|
FT_UINT8, BASE_DEC, NULL, 0,
|
|
"value", HFILL }
|
|
}
|
|
};
|
|
static hf_register_info hf2[] = {
|
|
{ &hf_llc_cimetrics_pid,
|
|
{ "PID", "llc.cimetrics_pid",
|
|
FT_UINT16, BASE_HEX, VALS(cimetrics_pid_vals), 0,
|
|
NULL, HFILL }
|
|
}
|
|
};
|
|
static gint *ett[] = {
|
|
&ett_cimetrics_mstp
|
|
};
|
|
|
|
proto_cimetrics_mstp = proto_register_protocol("Cimetrics MS/TP",
|
|
"Cimetrics MS/TP", "cimetrics");
|
|
|
|
proto_register_field_array(proto_cimetrics_mstp, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
cimetric_handle = register_dissector("cimetrics", dissect_cimetrics_mstp, proto_cimetrics_mstp);
|
|
|
|
llc_add_oui(OUI_CIMETRICS, "llc.cimetrics_pid",
|
|
"LLC Cimetrics OUI PID", hf2, proto_cimetrics_mstp);
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_cimetrics(void)
|
|
{
|
|
dissector_add_uint("llc.cimetrics_pid", 1, cimetric_handle);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - http://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* tab-width: 8
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
|
|
* :indentSize=8:tabSize=8:noTabs=false:
|
|
*/
|