8ed7a73e22
Cast away some implicit 64-bit-to-32-bit conversion errors due to use of sizeof. Cast away some implicit 64-bit-to-32-bit conversion errors due to use of strtol() and strtoul(). Change some data types to avoid those implicit conversion warnings. When assigning a constant to a float, make sure the constant isn't a double, by appending "f" to the constant. Constify a bunch of variables, parameters, and return values to eliminate warnings due to strings being given const qualifiers. Cast away those warnings in some cases where an API we don't control forces us to do so. Enable a bunch of additional warnings by default. Note why at least some of the other warnings aren't enabled. randpkt.c and text2pcap.c are used to build programs, so they don't need to be in EXTRA_DIST. If the user specifies --enable-warnings-as-errors, add -Werror *even if the user specified --enable-extra-gcc-flags; assume they know what they're doing and are willing to have the compile fail due to the extra GCC warnings being treated as errors. svn path=/trunk/; revision=46748
585 lines
16 KiB
C
585 lines
16 KiB
C
/* packet-pn-mrp.c
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* Routines for PN-MRP (PROFINET Media Redundancy Protocol)
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* packet dissection.
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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 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/dissectors/packet-dcerpc.h>
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#include <epan/oui.h>
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#include <epan/etypes.h>
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#include "packet-pn.h"
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static int proto_pn_mrp = -1;
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static int hf_pn_mrp_type = -1;
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static int hf_pn_mrp_length = -1;
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static int hf_pn_mrp_version = -1;
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static int hf_pn_mrp_sequence_id = -1;
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static int hf_pn_mrp_sa = -1;
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static int hf_pn_mrp_prio = -1;
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static int hf_pn_mrp_port_role = -1;
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static int hf_pn_mrp_ring_state = -1;
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static int hf_pn_mrp_interval = -1;
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static int hf_pn_mrp_transition = -1;
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static int hf_pn_mrp_time_stamp = -1;
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static int hf_pn_mrp_blocked = -1;
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static int hf_pn_manufacturer_data = -1;
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static int hf_pn_mrp_domain_uuid = -1;
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static int hf_pn_mrp_oui = -1;
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static gint ett_pn_mrp = -1;
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static const value_string pn_mrp_block_type_vals[] = {
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{ 0x00, "End" },
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{ 0x01, "Common" },
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{ 0x02, "Test" },
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{ 0x03, "TopologyChange" },
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{ 0x04, "LinkDown" },
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{ 0x05, "LinkUp" },
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/*0x06 - 0x7E Reserved */
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{ 0x7F, "Organizationally Specific"},
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{ 0, NULL },
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};
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static const value_string pn_mrp_oui_vals[] = {
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{ OUI_PROFINET, "PROFINET" },
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{ OUI_SIEMENS, "SIEMENS" },
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{ 0, NULL }
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};
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static const value_string pn_mrp_port_role_vals[] = {
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{ 0x0000, "Primary ring port" },
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{ 0x0001, "Secondary ring port"},
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/*0x0002 - 0xFFFF Reserved */
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{ 0, NULL }
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};
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static const value_string pn_mrp_role_vals[] = {
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{ 0x0000, "Media redundancy disabled" },
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{ 0x0001, "Media redundancy client" },
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{ 0x0002, "Media redundancy manager" },
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{ 0x0003, "Media redundancy manager (auto)" },
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/*0x0004 - 0xFFFF Reserved */
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{ 0, NULL }
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};
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static const value_string pn_mrp_ring_state_vals[] = {
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{ 0x0000, "Ring open" },
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{ 0x0001, "Ring closed"},
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/*0x0002 - 0xFFFF Reserved */
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{ 0, NULL }
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};
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static const value_string pn_mrp_prio_vals[] = {
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{ 0x8000, "Default priority for redundancy manager" },
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{ 0, NULL }
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};
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/* routine disecting an uint16 and returning that item as well */
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/* dissect a 16 bit unsigned integer */
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int
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dissect_pn_uint16_ret_item(tvbuff_t *tvb, gint offset, packet_info *pinfo _U_,
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proto_tree *tree, int hfindex, guint16 *pdata, proto_item ** new_item)
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{
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guint16 data;
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proto_item *item = NULL;
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data = tvb_get_ntohs (tvb, offset);
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if (tree) {
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item = proto_tree_add_uint(tree, hfindex, tvb, offset, 2, data);
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}
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if (pdata)
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*pdata = data;
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if (new_item)
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*new_item = item;
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return offset + 2;
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}
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static int
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dissect_PNMRP_Common(tvbuff_t *tvb, int offset,
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packet_info *pinfo, proto_tree *tree, proto_item *item)
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{
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guint16 sequence_id;
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e_uuid_t uuid;
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/* MRP_SequenceID */
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offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_mrp_sequence_id, &sequence_id);
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/* MRP_DomainUUID */
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offset = dissect_pn_uuid(tvb, offset, pinfo, tree, hf_pn_mrp_domain_uuid, &uuid);
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col_append_str(pinfo->cinfo, COL_INFO, "Common");
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proto_item_append_text(item, "Common");
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return offset;
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}
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#if 0
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static int
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dissect_PNMRP_LinkUp(tvbuff_t *tvb, int offset,
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packet_info *pinfo, proto_tree *tree, proto_item *item)
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{
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guint8 mac[6];
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guint16 port_role;
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guint16 interval;
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guint16 blocked;
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/* MRP_SA */
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offset = dissect_pn_mac(tvb, offset, pinfo, tree, hf_pn_mrp_sa, mac);
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/* MRP_PortRole */
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offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_mrp_port_role, &port_role);
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/* MRP_Interval */
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offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_mrp_interval, &interval);
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/* MRP_Blocked */
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offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_mrp_blocked, &blocked);
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/* Padding */
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offset = dissect_pn_align4(tvb, offset, pinfo, tree);
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col_append_str(pinfo->cinfo, COL_INFO, "LinkUp");
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proto_item_append_text(item, "LinkUp");
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return offset;
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}
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#endif
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static int
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dissect_PNMRP_LinkDown(tvbuff_t *tvb, int offset,
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packet_info *pinfo, proto_tree *tree, proto_item *item)
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{
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guint8 mac[6];
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guint16 port_role;
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guint16 interval;
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guint16 blocked;
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proto_item *sub_item;
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/* MRP_SA */
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offset = dissect_pn_mac(tvb, offset, pinfo, tree, hf_pn_mrp_sa, mac);
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/* MRP_PortRole */
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offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_mrp_port_role, &port_role);
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/* MRP_Interval */
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offset = dissect_pn_uint16_ret_item(tvb, offset, pinfo, tree, hf_pn_mrp_interval, &interval, &sub_item);
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if (tree)
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{
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proto_item_append_text(sub_item,"Interval for next topology change event (in ms)");
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if (interval <0x07D1)
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proto_item_append_text(sub_item,"Mandatory");
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else
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proto_item_append_text(sub_item,"Optional");
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/* MRP_Blocked */
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offset = dissect_pn_uint16_ret_item(tvb, offset, pinfo, tree, hf_pn_mrp_blocked, &blocked, &sub_item);
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if (blocked == 0)
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proto_item_append_text(sub_item,"The MRC is not able to receive and forward frames to port in state blocked");
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else
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if (blocked == 1)
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proto_item_append_text(sub_item,"The MRC is able to receive and forward frames to port in state blocked");
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else
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proto_item_append_text(sub_item,"Reserved");
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}
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/* Padding */
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offset = dissect_pn_align4(tvb, offset, pinfo, tree);
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col_append_str(pinfo->cinfo, COL_INFO, "LinkDown");
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proto_item_append_text(item, "LinkDown");
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return offset;
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}
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static const char * mrp_Prio2msg(guint16 prio)
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{
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if (prio == 0x0000)
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return(" Highest priority redundancy manager");
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if ((prio >= 0x1000) && (prio <= 0x7000))
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return(" High priorities");
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if (prio == 0x8000)
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return(" Default priority for redundancy manager");
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if ((prio >= 0x8001) && (prio <= 0x8FFF))
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return(" Low priorities for redundancy manager");
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if ((prio >= 0x9000) && (prio <= 0x9FFF))
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return(" High priorities for redundancy manager (auto)");
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if (prio == 0xA000)
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return(" Default priority for redundancy manager (auto)");
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if ((prio >= 0xA001) && (prio <= 0xF000))
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return(" Low priorities for redundancy manager (auto)");
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if (prio ==0xFFFF)
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return(" Lowest priority for redundancy manager (auto)");
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return(" Reserved");
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}
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static int
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dissect_PNMRP_Test(tvbuff_t *tvb, int offset,
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packet_info *pinfo, proto_tree *tree, proto_item *item)
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{
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guint16 prio;
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guint8 mac[6];
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guint16 port_role;
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guint16 ring_state;
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guint16 transition;
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guint32 time_stamp;
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proto_item *sub_item;
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/* MRP_Prio */
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offset = dissect_pn_uint16_ret_item(tvb, offset, pinfo, tree, hf_pn_mrp_prio, &prio, &sub_item);
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if (tree)
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proto_item_append_text(sub_item, "%s", mrp_Prio2msg(prio));
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/* MRP_SA */
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offset = dissect_pn_mac(tvb, offset, pinfo, tree, hf_pn_mrp_sa, mac);
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/* MRP_PortRole */
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offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_mrp_port_role, &port_role);
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/* MRP_RingState */
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offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_mrp_ring_state, &ring_state);
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/* MRP_Transition */
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offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_mrp_transition, &transition);
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/* MRP_TimeStamp */
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offset = dissect_pn_uint32(tvb, offset, pinfo, tree, hf_pn_mrp_time_stamp, &time_stamp);
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/* Padding */
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offset = dissect_pn_align4(tvb, offset, pinfo, tree);
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col_append_str(pinfo->cinfo, COL_INFO, "Test");
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if (tree)
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proto_item_append_text(item, "Test");
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return offset;
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}
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static int
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dissect_PNMRP_TopologyChange(tvbuff_t *tvb, int offset,
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packet_info *pinfo, proto_tree *tree, proto_item *item)
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{
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guint16 prio;
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guint8 mac[6];
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guint16 interval;
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proto_item *sub_item;
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/* MRP_Prio */
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offset = dissect_pn_uint16_ret_item(tvb, offset, pinfo, tree, hf_pn_mrp_prio, &prio, &sub_item);
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if (tree)
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proto_item_append_text(sub_item, "%s", mrp_Prio2msg(prio));
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/* MRP_SA */
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offset = dissect_pn_mac(tvb, offset, pinfo, tree, hf_pn_mrp_sa, mac);
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/* MRP_Interval */
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offset = dissect_pn_uint16_ret_item(tvb, offset, pinfo, tree, hf_pn_mrp_interval, &interval, &sub_item);
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if (tree)
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{
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proto_item_append_text(sub_item," Interval for next topology change event (in ms) ");
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if (interval <0x07D1)
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proto_item_append_text(sub_item,"Mandatory");
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else
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proto_item_append_text(sub_item,"Optional");
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}
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/* Padding */
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/*offset = dissect_pn_align4(tvb, offset, pinfo, tree);*/
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col_append_str(pinfo->cinfo, COL_INFO, "TopologyChange");
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if (tree)
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proto_item_append_text(item, "TopologyChange");
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return offset;
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}
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/* "dissect" Manufacture DATA */
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static int
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dissect_pn_ManuData(tvbuff_t *tvb, int offset, packet_info *pinfo _U_,
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proto_tree *tree, guint32 length)
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{
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proto_tree_add_string_format(tree, hf_pn_manufacturer_data, tvb, offset, length, "data",
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"MRP_ManufacturerData: %d bytes", length);
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return offset + length;
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}
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static int
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dissect_PNMRP_Option(tvbuff_t *tvb, int offset,
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packet_info *pinfo, proto_tree *tree, proto_item *item, guint8 length)
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{
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guint32 oui;
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/* OUI (organizational unique id) */
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offset = dissect_pn_oid(tvb, offset, pinfo,tree, hf_pn_mrp_oui, &oui);
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length -= 3;
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switch (oui)
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{
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case OUI_SIEMENS:
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proto_item_append_text(item, "Option(SIEMENS)");
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/* No Padding !
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if (offset % 4) {
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length -= 4 - (offset % 4);
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offset = dissect_pn_align4(tvb, offset, pinfo, tree);
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} */
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if (length != 0) {
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offset = dissect_pn_ManuData(tvb, offset, pinfo, tree, length);
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}
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col_append_str(pinfo->cinfo, COL_INFO, "Option(Siemens)");
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break;
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default:
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proto_item_append_text(item, "Option(Unknown-OUI)");
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offset = dissect_pn_undecoded(tvb, offset, pinfo, tree, length);
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col_append_str(pinfo->cinfo, COL_INFO, "Option");
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}
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/* Padding */
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offset = dissect_pn_align4(tvb, offset, pinfo, tree);
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return offset;
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}
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static int
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dissect_PNMRP_PDU(tvbuff_t *tvb, int offset,
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packet_info *pinfo, proto_tree *tree, proto_item *item)
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{
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guint16 version;
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guint8 type;
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guint8 length;
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gint i;
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tvbuff_t *new_tvb;
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/* MRP_Version */
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offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_mrp_version, &version);
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/* the rest of the packet has 4byte alignment regarding to the beginning of the next TLV block! */
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/* XXX - do we have to free this new tvb below? */
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new_tvb = tvb_new_subset_remaining(tvb, offset);
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offset = 0;
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for(i=0; tvb_length_remaining(tvb, offset) > 0; i++) {
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/* MRP_TLVHeader.Type */
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offset = dissect_pn_uint8(new_tvb, offset, pinfo, tree, hf_pn_mrp_type, &type);
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/* MRP_TLVHeader.Length */
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offset = dissect_pn_uint8(new_tvb, offset, pinfo, tree, hf_pn_mrp_length, &length);
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if (i != 0) {
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col_append_str(pinfo->cinfo, COL_INFO, ", ");
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proto_item_append_text(item, ", ");
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}
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switch(type) {
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case 0x00:
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/* no content */
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col_append_str(pinfo->cinfo, COL_INFO, "End");
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proto_item_append_text(item, "End");
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return offset;
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break;
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case 0x01:
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offset = dissect_PNMRP_Common(new_tvb, offset, pinfo, tree, item);
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break;
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case 0x02:
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offset = dissect_PNMRP_Test(new_tvb, offset, pinfo, tree, item);
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break;
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case 0x03:
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offset = dissect_PNMRP_TopologyChange(new_tvb, offset, pinfo, tree, item);
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break;
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case 0x04:
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case 0x05: /* dissection of up and down is identical! */
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offset = dissect_PNMRP_LinkDown(new_tvb, offset, pinfo, tree, item);
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break;
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case 0x7f:
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offset = dissect_PNMRP_Option(new_tvb, offset, pinfo, tree, item, length);
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break;
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default:
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offset = dissect_pn_undecoded(tvb, offset, pinfo, tree, length);
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col_append_fstr(pinfo->cinfo, COL_INFO, "Unknown TLVType 0x%x", type);
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proto_item_append_text(item, "Unknown TLVType 0x%x", type);
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}
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}
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return offset;
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}
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/* Dissect MRP packets */
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static void
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dissect_PNMRP(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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proto_item *ti = NULL;
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proto_tree *mrp_tree = NULL;
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guint32 offset = 0;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "PN-MRP");
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/* Clear the information column on summary display */
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col_clear(pinfo->cinfo, COL_INFO);
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if (tree)
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{
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ti = proto_tree_add_item(tree, proto_pn_mrp, tvb, offset, -1, ENC_NA);
|
|
mrp_tree = proto_item_add_subtree(ti, ett_pn_mrp);
|
|
}
|
|
|
|
dissect_PNMRP_PDU(tvb, offset, pinfo, mrp_tree, ti);
|
|
}
|
|
|
|
|
|
void
|
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proto_register_pn_mrp (void)
|
|
{
|
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static hf_register_info hf[] = {
|
|
{ &hf_pn_mrp_type,
|
|
{ "MRP_TLVHeader.Type", "pn_mrp.type",
|
|
FT_UINT8, BASE_HEX, VALS(pn_mrp_block_type_vals), 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_pn_mrp_length,
|
|
{ "MRP_TLVHeader.Length", "pn_mrp.length",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_pn_mrp_version,
|
|
{ "MRP_Version", "pn_mrp.version",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_pn_mrp_sequence_id,
|
|
{ "MRP_SequenceID", "pn_mrp.sequence_id",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
"Unique sequence number to each outstanding service request", HFILL }},
|
|
|
|
{ &hf_pn_mrp_sa,
|
|
{ "MRP_SA", "pn_mrp.sa",
|
|
FT_ETHER, BASE_NONE, 0x0, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_pn_mrp_prio,
|
|
{ "MRP_Prio", "pn_mrp.prio",
|
|
FT_UINT16, BASE_HEX, 0, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_pn_mrp_port_role,
|
|
{ "MRP_PortRole", "pn_mrp.port_role",
|
|
FT_UINT16, BASE_HEX, VALS(pn_mrp_port_role_vals), 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_pn_mrp_ring_state,
|
|
{ "MRP_RingState", "pn_mrp.ring_state",
|
|
FT_UINT16, BASE_HEX, VALS(pn_mrp_ring_state_vals), 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_pn_mrp_interval,
|
|
{ "MRP_Interval", "pn_mrp.interval",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Interval for next topology change event (in ms)", HFILL }},
|
|
|
|
{ &hf_pn_mrp_transition,
|
|
{ "MRP_Transition", "pn_mrp.transition",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
"Number of transitions between media redundancy lost and ok states", HFILL }},
|
|
|
|
{ &hf_pn_mrp_time_stamp,
|
|
{ "MRP_TimeStamp [ms]", "pn_mrp.time_stamp",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
"Actual counter value of 1ms counter", HFILL }},
|
|
|
|
{ &hf_pn_mrp_blocked,
|
|
{ "MRP_Blocked", "pn_mrp.blocked",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_pn_manufacturer_data,
|
|
{ "MRP_ManufacturerData", "pn_mrp.ManufacturerData",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_pn_mrp_domain_uuid,
|
|
{ "MRP_DomainUUID", "pn_mrp.domain_uuid",
|
|
FT_GUID, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_pn_mrp_oui,
|
|
{ "MRP_ManufacturerOUIr", "pn_mrp.oui",
|
|
FT_UINT24, BASE_HEX, VALS(pn_mrp_oui_vals), 0x0,
|
|
NULL, HFILL }},
|
|
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_pn_mrp
|
|
};
|
|
|
|
proto_pn_mrp = proto_register_protocol ("PROFINET MRP", "PN-MRP", "pn_mrp");
|
|
proto_register_field_array (proto_pn_mrp, hf, array_length (hf));
|
|
proto_register_subtree_array (ett, array_length (ett));
|
|
}
|
|
|
|
|
|
void
|
|
proto_reg_handoff_pn_mrp (void)
|
|
{
|
|
dissector_handle_t mrp_handle;
|
|
|
|
|
|
mrp_handle = create_dissector_handle(dissect_PNMRP,proto_pn_mrp);
|
|
dissector_add_uint("ethertype", ETHERTYPE_MRP, mrp_handle);
|
|
|
|
}
|