![Bill Meier](/assets/img/avatar_default.png)
unused hf[] entries (which I should have done in the first place). svn path=/trunk/; revision=47390
231 lines
7 KiB
C
231 lines
7 KiB
C
/* packet-tte-pcf.c
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* Routines for Time Triggered Ethernet Protocol Control Frame dissection
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*
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* Author: Valentin Ecker
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* Author: Benjamin Roch, benjamin.roch (AT) tttech.com
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*
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* TTTech Computertechnik AG, Austria.
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* http://www.tttech.com/solutions/ttethernet/
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*/
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#include "config.h"
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/etypes.h>
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#include "packet-tte.h"
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/* Initialize the protocol and registered fields */
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static int proto_tte_pcf = -1;
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/* static int hf_tte_pcf = -1; */
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static int hf_tte_pcf_ic = -1;
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static int hf_tte_pcf_mn = -1;
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/* static int hf_tte_pcf_res0 = -1; */
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static int hf_tte_pcf_sp = -1;
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static int hf_tte_pcf_sd = -1;
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static int hf_tte_pcf_type = -1;
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/* static int hf_tte_pcf_res1 = -1; */
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static int hf_tte_pcf_tc = -1;
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/* Initialize the subtree pointers */
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static gint ett_tte_pcf = -1;
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static const value_string pcf_type_str_vals[] =
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{ {2, "integration frame"}
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, {4, "coldstart frame"}
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, {8, "coldstart ack frame"}
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, {0, NULL}
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};
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/* Code to actually dissect the packets */
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static void
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dissect_tte_pcf(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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/* Set up structures needed to add the protocol subtree and manage it */
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proto_item *tte_pcf_root_item;
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proto_tree *tte_pcf_tree;
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/* variables used to store the fields displayed in the info_column */
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guint8 sync_priority = 0;
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guint8 sync_domain = 0;
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/* Check that there's enough data */
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if (tvb_length(tvb) < TTE_PCF_LENGTH )
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{
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return;
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}
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/* get sync_priority and sync_domain */
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sync_priority = tvb_get_guint8(tvb, TTE_PCF_IC_LENGTH+TTE_PCF_MN_LENGTH+
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TTE_PCF_RES0_LENGTH);
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sync_domain = tvb_get_guint8(tvb, TTE_PCF_IC_LENGTH+TTE_PCF_MN_LENGTH+
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TTE_PCF_RES0_LENGTH+TTE_PCF_SP_LENGTH);
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/* Make entries in Protocol column and Info column on summary display */
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "PCF");
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col_add_fstr(pinfo->cinfo, COL_INFO,
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"Sync Domain: 0x%02X Sync Priority: 0x%02X",
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sync_domain, sync_priority);
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if (tree) {
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/* create display subtree for the protocol */
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tte_pcf_root_item = proto_tree_add_item(tree, proto_tte_pcf, tvb, 0,
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TTE_PCF_LENGTH, ENC_NA);
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tte_pcf_tree = proto_item_add_subtree(tte_pcf_root_item, ett_tte_pcf);
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proto_tree_add_item(tte_pcf_tree,
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hf_tte_pcf_ic, tvb, 0, TTE_PCF_IC_LENGTH, ENC_BIG_ENDIAN);
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proto_tree_add_item(tte_pcf_tree,
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hf_tte_pcf_mn, tvb, TTE_PCF_IC_LENGTH, TTE_PCF_MN_LENGTH, ENC_BIG_ENDIAN);
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/* RESERVED FIELD --- will not be displayed */
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/* proto_tree_add_item(tte_pcf_tree,
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hf_tte_pcf_res0, tvb, TTE_PCF_IC_LENGTH+TTE_PCF_MN_LENGTH,
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TTE_PCF_RES0_LENGTH, ENC_BIG_ENDIAN); */
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proto_tree_add_item(tte_pcf_tree,
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hf_tte_pcf_sp, tvb, TTE_PCF_IC_LENGTH+TTE_PCF_MN_LENGTH+
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TTE_PCF_RES0_LENGTH, TTE_PCF_SP_LENGTH, ENC_BIG_ENDIAN);
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proto_tree_add_item(tte_pcf_tree,
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hf_tte_pcf_sd, tvb, TTE_PCF_IC_LENGTH+TTE_PCF_MN_LENGTH+
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TTE_PCF_RES0_LENGTH+TTE_PCF_SP_LENGTH, TTE_PCF_SD_LENGTH, ENC_BIG_ENDIAN);
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proto_tree_add_item(tte_pcf_tree,
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hf_tte_pcf_type, tvb, TTE_PCF_IC_LENGTH+TTE_PCF_MN_LENGTH+
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TTE_PCF_RES0_LENGTH+TTE_PCF_SP_LENGTH+TTE_PCF_SD_LENGTH,
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TTE_PCF_TYPE_LENGTH, ENC_BIG_ENDIAN);
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/* RESERVED FIELD --- will not be displayed */
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/* proto_tree_add_item(tte_pcf_tree,
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hf_tte_pcf_res1, tvb, TTE_PCF_IC_LENGTH+TTE_PCF_MN_LENGTH+
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TTE_PCF_RES0_LENGTH+TTE_PCF_SP_LENGTH+TTE_PCF_SD_LENGTH+
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TTE_PCF_TYPE_LENGTH, TTE_PCF_RES1_LENGTH, ENC_NA); */
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proto_tree_add_item(tte_pcf_tree,
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hf_tte_pcf_tc, tvb, TTE_PCF_IC_LENGTH+TTE_PCF_MN_LENGTH+
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TTE_PCF_RES0_LENGTH+TTE_PCF_SP_LENGTH+TTE_PCF_SD_LENGTH+
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TTE_PCF_TYPE_LENGTH+TTE_PCF_RES1_LENGTH, TTE_PCF_TC_LENGTH, ENC_BIG_ENDIAN);
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}
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}
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void
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proto_register_tte_pcf(void)
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{
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static hf_register_info hf[] = {
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#if 0
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{ &hf_tte_pcf,
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{ "Protocol Control Frame", "tte.pcf",
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FT_BYTES, BASE_NONE, NULL, 0x0,
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NULL, HFILL }
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},
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#endif
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{ &hf_tte_pcf_ic,
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{ "Integration Cycle", "tte.pcf.ic",
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FT_UINT32, BASE_HEX, NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_tte_pcf_mn,
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{ "Membership New", "tte.pcf.mn",
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FT_UINT32, BASE_HEX, NULL, 0x0,
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NULL, HFILL }
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},
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#if 0
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{ &hf_tte_pcf_res0,
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{ "Reserved 0", "tte.pcf.res0",
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FT_UINT32, BASE_HEX, NULL, 0x0,
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NULL, HFILL }
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},
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#endif
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{ &hf_tte_pcf_sp,
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{ "Sync Priority", "tte.pcf.sp",
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FT_UINT8, BASE_HEX, NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_tte_pcf_sd,
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{ "Sync Domain", "tte.pcf.sd",
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FT_UINT8, BASE_HEX, NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_tte_pcf_type,
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{ "Type", "tte.pcf.type",
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FT_UINT8, BASE_HEX, VALS(pcf_type_str_vals), 0x0F,
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NULL, HFILL }
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},
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#if 0
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{ &hf_tte_pcf_res1,
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{ "Reserved 1", "tte.pcf.res1",
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FT_BYTES, BASE_NONE, NULL, 0x0,
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NULL, HFILL }
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},
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#endif
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{ &hf_tte_pcf_tc,
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{ "Transparent Clock", "tte.pcf.tc",
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FT_UINT64, BASE_HEX, NULL, 0x0,
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NULL, HFILL }
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}
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};
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/* Setup protocol subtree array */
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static gint *ett[] = {
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&ett_tte_pcf
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};
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/* Register the protocol name and description */
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proto_tte_pcf = proto_register_protocol("TTEthernet Protocol Control Frame",
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"TTE PCF", "tte_pcf");
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/* Required function calls to register header fields and subtrees used */
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proto_register_field_array(proto_tte_pcf, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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register_dissector("tte_pcf", dissect_tte_pcf, proto_tte_pcf);
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}
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void
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proto_reg_handoff_tte_pcf(void)
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{
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dissector_handle_t tte_pcf_handle;
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/* initialize the pcf handle */
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tte_pcf_handle = find_dissector("tte_pcf");
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dissector_add_uint("ethertype", ETHERTYPE_TTE_PCF, tte_pcf_handle);
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}
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