2010-01-17 14:07:03 +00:00
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/* packet-hp-erm.c
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* Routines for the disassembly of HP ProCurve encapsulated remote mirroring frames
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2012-07-16 14:23:28 +00:00
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* (Adapted from packet-cisco-erspan.c and packet-vlan.c)
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2010-01-17 14:07:03 +00:00
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*
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2012-07-16 14:23:28 +00:00
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* Copyright 2010 2012 William Meier <wmeier [AT] newsguy.com>,
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* Zdravko Velinov <z.velinov [AT] vkv5.com>
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2010-01-17 14:07:03 +00:00
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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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/*
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* For some information on HP Procurve encapsulated remote mirroring see
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* "Traffic Mirroring" in Appendix B of the HP manual
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* "Management and Configuration Guide for the ProCurve Series
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* 3500, 3500yl, 5400zl, 6200yl, 6600, and 8200zl Switches (September 2009)"
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2011-10-21 02:10:19 +00:00
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*
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2010-01-17 14:07:03 +00:00
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* Format:
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* The above manual indicates that the encapsulatedmirrored frame is transmitted
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* on the network as a [UDP] packet which has 54 bytes preceding the mirrored frame.
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2011-10-21 02:10:19 +00:00
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* Examining a sample capture shows that this means that the data payload
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* of the UDP packet consists of a 12 byte "header" followed by the
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2012-07-16 14:23:28 +00:00
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* bytes of the mirrored frame.
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2011-10-21 02:10:19 +00:00
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*
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2013-10-13 19:56:52 +00:00
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* After some additional tests, which involved injecting 802.1Q frames with
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2012-07-16 14:23:28 +00:00
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* different priorities and VLAN identifiers. It was determined that the HP
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* ERM header has a part inside its header that closely resembles the 802.1Q
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* header. The only difference is the priority numbering.
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2010-01-17 14:07:03 +00:00
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*/
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2012-09-20 02:03:38 +00:00
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#include "config.h"
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2010-01-17 14:07:03 +00:00
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/prefs.h>
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2013-12-15 23:44:12 +00:00
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void proto_register_hp_erm(void);
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void proto_reg_handoff_hp_erm(void);
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2010-01-17 14:07:03 +00:00
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#define PROTO_SHORT_NAME "HP_ERM"
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#define PROTO_LONG_NAME "HP encapsulated remote mirroring"
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static guint global_hp_erm_udp_port = 0;
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2012-07-16 14:23:28 +00:00
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static int proto_hp_erm = -1;
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static gint ett_hp_erm = -1;
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static int hf_hp_erm_unknown1 = -1;
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static int hf_hp_erm_unknown2 = -1;
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static int hf_hp_erm_unknown3 = -1;
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static int hf_hp_erm_priority = -1;
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static int hf_hp_erm_cfi = -1;
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static int hf_hp_erm_vlan = -1;
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static const value_string hp_erm_pri_vals[] = {
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{ 0, "Background" },
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{ 1, "Spare" },
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{ 2, "Best Effort (default)" },
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{ 3, "Excellent Effort" },
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{ 4, "Controlled Load" },
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{ 5, "Video, < 100ms latency and jitter" },
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{ 6, "Voice, < 10ms latency and jitter" },
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{ 7, "Network Control" },
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{ 0, NULL }
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};
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static const value_string hp_erm_cfi_vals[] = {
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{ 0, "Canonical" },
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{ 1, "Non-canonical" },
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{ 0, NULL }
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};
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2010-01-17 14:07:03 +00:00
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static dissector_handle_t eth_withoutfcs_handle;
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static void
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dissect_hp_erm(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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proto_item *ti;
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2012-07-16 14:23:28 +00:00
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proto_tree *hp_erm_tree = NULL;
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2010-01-17 14:07:03 +00:00
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tvbuff_t *eth_tvb;
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2012-07-16 14:23:28 +00:00
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int offset = 0;
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2010-01-17 14:07:03 +00:00
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col_set_str(pinfo->cinfo, COL_PROTOCOL, PROTO_SHORT_NAME);
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col_set_str(pinfo->cinfo, COL_INFO, PROTO_SHORT_NAME ":");
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if (tree) {
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2011-10-21 02:10:19 +00:00
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ti = proto_tree_add_item(tree, proto_hp_erm, tvb, 0, -1, ENC_NA);
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2010-01-17 14:07:03 +00:00
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hp_erm_tree = proto_item_add_subtree(ti, ett_hp_erm);
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}
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2012-07-16 14:23:28 +00:00
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proto_tree_add_item(hp_erm_tree, hf_hp_erm_unknown1, tvb, offset, 8, ENC_NA);
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offset += 8;
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proto_tree_add_item(hp_erm_tree, hf_hp_erm_unknown2, tvb, offset, 4, ENC_BIG_ENDIAN);
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proto_tree_add_item(hp_erm_tree, hf_hp_erm_priority, tvb, offset, 4, ENC_BIG_ENDIAN);
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proto_tree_add_item(hp_erm_tree, hf_hp_erm_cfi, tvb, offset, 4, ENC_BIG_ENDIAN);
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proto_tree_add_item(hp_erm_tree, hf_hp_erm_vlan, tvb, offset, 4, ENC_BIG_ENDIAN);
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proto_tree_add_item(hp_erm_tree, hf_hp_erm_unknown3, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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eth_tvb = tvb_new_subset_remaining(tvb, offset);
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2010-01-17 14:07:03 +00:00
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call_dissector(eth_withoutfcs_handle, eth_tvb, pinfo, tree);
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}
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void
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proto_register_hp_erm(void)
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{
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static hf_register_info hf[] = {
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2012-07-16 14:23:28 +00:00
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{ &hf_hp_erm_unknown1,
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{ "Unknown1", "hp_erm.unknown1", FT_BYTES, BASE_NONE, NULL,
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0x0, NULL, HFILL }},
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{ &hf_hp_erm_unknown2,
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{ "Unknown2", "hp_erm.unknown2", FT_UINT32, BASE_DEC, NULL,
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0xFF000000, NULL, HFILL }},
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{ &hf_hp_erm_priority,
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{ "Priority", "hp_erm.priority", FT_UINT32, BASE_DEC, VALS(hp_erm_pri_vals),
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0x00E00000, NULL, HFILL }},
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{ &hf_hp_erm_cfi,
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{ "CFI", "hp_erm.cfi", FT_UINT32, BASE_DEC, VALS(hp_erm_cfi_vals),
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0x00100000, NULL, HFILL }},
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{ &hf_hp_erm_vlan,
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{ "Vlan", "hp_erm.vlan", FT_UINT32, BASE_DEC, NULL,
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0x000FFF00, NULL, HFILL }},
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{ &hf_hp_erm_unknown3,
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{ "Unknown3", "hp_erm.unknown3", FT_UINT32, BASE_DEC, NULL,
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0x000000FF, NULL, HFILL }}
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2010-01-17 14:07:03 +00:00
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};
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static gint *ett[] = {
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&ett_hp_erm,
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};
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module_t *hp_erm_module;
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proto_hp_erm = proto_register_protocol(PROTO_LONG_NAME, PROTO_SHORT_NAME, "hp_erm");
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hp_erm_module = prefs_register_protocol(proto_hp_erm, proto_reg_handoff_hp_erm);
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prefs_register_uint_preference(hp_erm_module, "udp.port", "HP_ERM UDP Port",
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"Set the UDP port (source or destination) used for HP"
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" encapsulated remote mirroring frames;\n"
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"0 (default) means that the HP_ERM dissector is not active",
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10, &global_hp_erm_udp_port);
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proto_register_field_array(proto_hp_erm, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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}
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void
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proto_reg_handoff_hp_erm(void)
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{
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static dissector_handle_t hp_erm_handle;
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static guint hp_erm_udp_port;
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static gboolean initialized = FALSE;
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if (!initialized) {
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eth_withoutfcs_handle = find_dissector("eth_withoutfcs");
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hp_erm_handle = create_dissector_handle(dissect_hp_erm, proto_hp_erm);
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initialized = TRUE;
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} else {
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if (hp_erm_udp_port != 0)
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2010-12-20 05:35:29 +00:00
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dissector_delete_uint("udp.port", hp_erm_udp_port, hp_erm_handle);
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2010-01-17 14:07:03 +00:00
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}
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hp_erm_udp_port = global_hp_erm_udp_port;
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if (hp_erm_udp_port != 0)
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2010-12-20 05:35:29 +00:00
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dissector_add_uint("udp.port", hp_erm_udp_port, hp_erm_handle);
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2010-01-17 14:07:03 +00:00
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}
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2012-07-16 14:23:28 +00:00
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/*
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* Editor modelines
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*
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* Local Variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* ex: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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