forked from osmocom/wireshark
![Anish Bhatt](/assets/img/avatar_default.png)
Change-Id: Ieb36a77a98da1ce6e5de34010806cdc05f8e6533 Reviewed-on: https://code.wireshark.org/review/15637 Reviewed-by: Michael Mann <mmann78@netscape.net> Petri-Dish: Michael Mann <mmann78@netscape.net> Reviewed-by: Anish Bhatt <anish@gatech.edu> Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org> Reviewed-by: Alexis La Goutte <alexis.lagoutte@gmail.com>
203 lines
6.7 KiB
C
203 lines
6.7 KiB
C
/* packet-iperf.c
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* Routines for iPerf dissection
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* By Anish Bhatt <anish@gatech.edu>
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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 <epan/packet.h>
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#define IPERF2_HDR_SIZE 24
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#define IPERF2_UDP_HDR_SIZE 12
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void proto_register_iperf2(void);
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void proto_reg_handoff_iperf2(void);
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static int proto_iperf2 = -1;
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static int hf_iperf2_sequence = -1;
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static int hf_iperf2_sec = -1;
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static int hf_iperf2_usec = -1;
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static int hf_iperf2_flags = -1;
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static int hf_iperf2_num_threads = -1;
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static int hf_iperf2_mport = -1;
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static int hf_iperf2_bufferlen = -1;
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static int hf_iperf2_mwinband = -1;
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static int hf_iperf2_mamount = -1;
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static gint ett_iperf2 = -1;
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static gint ett_udphdr = -1;
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static gint ett_client_hdr = -1;
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static dissector_handle_t iperf2_handle_tcp = NULL;
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static dissector_handle_t iperf2_handle_udp = NULL;
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static int
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dissect_iperf2(tvbuff_t *tvb, proto_tree *iperf2_tree, guint32 offset)
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{
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proto_tree *client_tree;
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client_tree = proto_tree_add_subtree(iperf2_tree, tvb, offset, IPERF2_HDR_SIZE, ett_client_hdr, NULL, "iPerf2 Client Header");
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proto_tree_add_item(client_tree, hf_iperf2_flags, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(client_tree, hf_iperf2_num_threads, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(client_tree, hf_iperf2_mport, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(client_tree, hf_iperf2_bufferlen, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(client_tree, hf_iperf2_mwinband, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(client_tree, hf_iperf2_mamount, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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return offset;
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}
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static int
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dissect_iperf2_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void * data _U_)
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{
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proto_item *ti;
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proto_tree *iperf2_tree;
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/*There is probably a better way to do this, for now ignore any TCP packet with payload
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> 24 bytes as only the first packet with a 24 byte payload has iperf headers. One way might
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be to check header flags, as there are only two possible values */
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if (tvb_reported_length(tvb) > IPERF2_HDR_SIZE)
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return 0;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "iPerf2");
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/* Clear out stuff in the info column */
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col_clear(pinfo->cinfo, COL_INFO);
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ti = proto_tree_add_item(tree, proto_iperf2, tvb, 0, IPERF2_HDR_SIZE, ENC_NA);
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iperf2_tree = proto_item_add_subtree(ti, ett_iperf2);
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return dissect_iperf2(tvb, iperf2_tree, 0);
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}
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static int
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dissect_iperf2_udp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void * data _U_)
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{
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guint32 offset = 0;
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guint32 hdr_size = IPERF2_HDR_SIZE + IPERF2_UDP_HDR_SIZE;
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proto_item *ti;
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proto_tree *iperf2_tree, *udp_tree;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "iPerf2");
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/* Clear out stuff in the info column */
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col_clear(pinfo->cinfo, COL_INFO);
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ti = proto_tree_add_item(tree, proto_iperf2, tvb, offset, hdr_size, ENC_NA);
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iperf2_tree = proto_item_add_subtree(ti, ett_iperf2);
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udp_tree = proto_tree_add_subtree(iperf2_tree, tvb, offset, IPERF2_UDP_HDR_SIZE, ett_udphdr, NULL, "iPerf2 UDP Header");
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proto_tree_add_item(udp_tree, hf_iperf2_sequence, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(udp_tree, hf_iperf2_sec, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(udp_tree, hf_iperf2_usec, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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return dissect_iperf2(tvb, iperf2_tree, offset);
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}
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void
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proto_register_iperf2(void)
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{
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/* Setup list of header fields */
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static hf_register_info hf[] = {
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{ &hf_iperf2_sequence,
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{ "iPerf2 sequence", "iperf2.udp.sequence", FT_INT32, BASE_DEC,
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NULL, 0, NULL, HFILL }
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},
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{ &hf_iperf2_sec,
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{ "iPerf2 sec", "iperf2.udp.sec", FT_UINT32, BASE_DEC,
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NULL, 0, NULL, HFILL }
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},
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{ &hf_iperf2_usec,
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{ "iPerf2 usec", "iperf2.udp.usec", FT_UINT32, BASE_DEC,
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NULL, 0, NULL, HFILL }
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},
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{ &hf_iperf2_flags,
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{ "Flags", "iperf2.client.flags", FT_UINT32, BASE_DEC,
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NULL, 0, NULL, HFILL }
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},
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{ &hf_iperf2_num_threads,
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{ "Number of Threads", "iperf2.client.numthreads", FT_UINT32, BASE_DEC,
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NULL, 0, NULL, HFILL }
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},
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{ &hf_iperf2_mport,
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{ "Server Port", "iperf2.client.port", FT_UINT32, BASE_DEC,
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NULL, 0, NULL, HFILL }
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},
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{ &hf_iperf2_bufferlen,
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{ "Buffer Len", "iperf2.client.bufferlen", FT_UINT32, BASE_DEC,
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NULL, 0, NULL, HFILL }
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},
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{ &hf_iperf2_mwinband,
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{ "Bandwidth", "iperf2.client.bandwidth", FT_UINT32, BASE_HEX,
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NULL, 0, NULL, HFILL }
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},
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{ &hf_iperf2_mamount,
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{ "Number of Bytes", "iperf2.client.num_bytes", FT_UINT32, BASE_HEX,
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NULL, 0, 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_iperf2,
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&ett_udphdr,
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&ett_client_hdr
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};
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/* Register the protocol name and description */
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proto_iperf2 = proto_register_protocol("iPerf2 Packet Data", "iPerf2", "iperf2");
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proto_register_field_array(proto_iperf2, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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iperf2_handle_tcp = register_dissector("iperf2_tcp", dissect_iperf2_tcp, proto_iperf2);
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iperf2_handle_udp = register_dissector("iperf2_udp", dissect_iperf2_udp, proto_iperf2);
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}
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void
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proto_reg_handoff_iperf2(void)
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{
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dissector_add_for_decode_as_with_preference("tcp.port", iperf2_handle_tcp);
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dissector_add_for_decode_as_with_preference("udp.port", iperf2_handle_udp);
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}
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/*
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* Editor modelines - https://www.wireshark.org/tools/modelines.html
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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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* vi: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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