forked from osmocom/wireshark
Dissector for HP encapsulated remote mirroring.
svn path=/trunk/; revision=31547
This commit is contained in:
Bill Meier
parent
a255c08b66
commit
05eae470b9
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@ -504,6 +504,7 @@ DISSECTOR_SRC = \
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packet-hilscher.c \
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packet-hip.c \
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packet-homeplug.c \
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packet-hp-erm.c \
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packet-hpext.c \
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packet-hpsw.c \
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packet-hpteam.c \
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@ -0,0 +1,134 @@
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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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* (Adapted from packet-cisco-erspan.c)
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*
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* $Id$
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*
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* Copyright 2010 William Meier <wmeier [AT] newsguy.com>
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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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*
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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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* 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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* byes of the mirrored frame.
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*
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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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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#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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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_unknown = -1;
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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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proto_tree *hp_erm_tree;
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tvbuff_t *eth_tvb;
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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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ti = proto_tree_add_item(tree, proto_hp_erm, tvb, 0, -1, FALSE);
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hp_erm_tree = proto_item_add_subtree(ti, ett_hp_erm);
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proto_tree_add_item(hp_erm_tree, hf_hp_erm_unknown, tvb, 0, 12, FALSE);
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}
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eth_tvb = tvb_new_subset_remaining(tvb, 12);
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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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void proto_reg_handoff_hp_erm(void);
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static hf_register_info hf[] = {
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{ &hf_hp_erm_unknown,
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{ "Unknown", "hp_erm.unknown", FT_BYTES, BASE_NONE, NULL,
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0x00, NULL, HFILL }},
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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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dissector_delete("udp.port", hp_erm_udp_port, hp_erm_handle);
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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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dissector_add("udp.port", hp_erm_udp_port, hp_erm_handle);
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}
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