osmocom
/
wireshark
14
0
Fork 1
Code Issues Pull Requests Projects Releases Wiki Activity
wireshark/epan/dissectors/packet-homeplug.c

807 lines
26 KiB
C
Raw Blame History

/* packet-homeplug.c
* Routines for homeplug dissection
*
* Copyright 2006, Sebastien Tandel <sebastien[AT]tandel.be>
*
* $Id$
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <glib.h>
#include <epan/packet.h>
#include <epan/prefs.h>
#include <epan/etypes.h>
#include <epan/proto.h>
#include <epan/ptvcursor.h>
/* METYPE Values */
#define HOMEPLUG_MME_RCE 0x00
#define HOMEPLUG_MME_CER 0x01
#define HOMEPLUG_MME_RPS 0x07
#define HOMEPLUG_MME_PSR 0x08
#define HOMEPLUG_MME_NS 0x1A
/* Bit mask Operation */
#define HOMEPLUG_MCTRL_RSVD 0x80
#define HOMEPLUG_MCTRL_NE 0x7F
#define HOMEPLUG_MEHDR_MEV 0xE0
#define HOMEPLUG_MEHDR_METYPE 0x1F
#define HOMEPLUG_NS_AC 0x80
#define HOMEPLUG_NS_ICID 0x7F
#define HOMEPLUG_RCE_CEV 0xF0
#define HOMEPLUG_RCE_RSVD 0x0F
#define HOMEPLUG_CER_CERV 0xF0
#define HOMEPLUG_CER_RSVD 0x0FE0
#define HOMEPLUG_CER_RXTMI 0x1F
#define HOMEPLUG_CER_RATE 0x80
#define HOMEPLUG_CER_BP 0x40
#define HOMEPLUG_CER_VT11 0x0F
#define HOMEPLUG_CER_RSVD2 0x80
#define HOMEPLUG_CER_NBDAS 0x7F
/* Length of Network Statistics Response defines whether it is the Basic or
* the Extended Response */
#define HOMEPLUG_NS_BASIC_LEN 187
#define HOMEPLUG_NS_EXT_LEN 199
/* forward reference */
void proto_reg_handoff_homeplug(void);
static int proto_homeplug = -1;
static int hf_homeplug_mctrl = -1;
static int hf_homeplug_mctrl_reserved = -1;
static int hf_homeplug_mctrl_ne = -1;
static int hf_homeplug_mehdr = -1;
static int hf_homeplug_mehdr_mev = -1;
static int hf_homeplug_mehdr_metype = -1;
static int hf_homeplug_melen = -1;
static int hf_homeplug_mme = -1;
/* Request Channel Estimation */
static int hf_homeplug_rce = -1;
static int hf_homeplug_rce_cev = -1;
static int hf_homeplug_rce_rsvd = -1;
/* Channel Estimation Response */
static int hf_homeplug_cer = -1;
static int hf_homeplug_cer_cerv = -1;
static int hf_homeplug_cer_rsvd1 = -1;
static int hf_homeplug_cer_rxtmi = -1;
static int hf_homeplug_cer_vt = -1;
static int hf_homeplug_cer_rate = -1;
static int hf_homeplug_cer_bp = -1;
static int hf_homeplug_cer_mod = -1;
static int hf_homeplug_cer_vt11 = -1;
static int hf_homeplug_cer_rsvd2 = -1;
static int hf_homeplug_cer_nbdas = -1;
static int hf_homeplug_cer_bda = -1;
/* Request Parameters and Statistics */
static int hf_homeplug_rps = -1;
/* Parameters and Statistics Response */
static int hf_homeplug_psr = -1;
static int hf_homeplug_psr_txack = -1;
static int hf_homeplug_psr_txnack = -1;
static int hf_homeplug_psr_txfail = -1;
static int hf_homeplug_psr_txcloss = -1;
static int hf_homeplug_psr_txcoll = -1;
static int hf_homeplug_psr_txca3lat = -1;
static int hf_homeplug_psr_txca2lat = -1;
static int hf_homeplug_psr_txca1lat = -1;
static int hf_homeplug_psr_txca0lat = -1;
static int hf_homeplug_psr_rxbp40 = -1;
/* Network Statistics */
/* Basic */
static int hf_homeplug_ns = -1;
static int hf_homeplug_ns_netw_ctrl_ac = -1;
static int hf_homeplug_ns_netw_ctrl_icid = -1;
static int hf_homeplug_ns_netw_ctrl_icid_rsvd = -1;
static int hf_homeplug_ns_bytes40_robo = -1;
static int hf_homeplug_ns_fails_robo = -1;
static int hf_homeplug_ns_drops_robo = -1;
static int hf_homeplug_ns_netw_da = -1;
static int hf_homeplug_ns_bytes40 = -1;
static int hf_homeplug_ns_fails = -1;
static int hf_homeplug_ns_drops = -1;
/* array of 15 elements */
/* static int hf_homeplug_ns_bytes40_1 = -1;
static int hf_homeplug_ns_bytes40_1 */
/* Extended */
/* array of 6 elements */
/* static int hf_homeplug_ns_tx_bfr_0_state = -1;*/
static gint ett_homeplug = -1;
static gint ett_homeplug_mctrl = -1;
static gint ett_homeplug_mehdr = -1;
static gint ett_homeplug_rce = -1;
static gint ett_homeplug_cer = -1;
static gint ett_homeplug_rps = -1;
static gint ett_homeplug_psr = -1;
static gint ett_homeplug_ns = -1;
static gint ett_homeplug_tone = -1;
static guint8 homeplug_ne = 0;
static guint8 homeplug_melen = 0;
static guint8 homeplug_metype = 0;
static guint32 homeplug_offset = 0;
/* IC_ID Values */
#define HOMEPLUG_NS_ICID5130A1 0x00
#define HOMEPLUG_NS_ICID51X1USB 0x01
#define HOMEPLUG_NS_ICID51X1PHY 0x02
#define HOMEPLUG_NS_ICID51X1HOST 0x03
#define HOMEPLUG_NS_ICID5130A2 0x04
#define HOMEPLUG_NS_ICID_RSVD1 0x05
#define HOMEPLUG_NS_ICID_RSVD2 0x06
#define HOMEPLUG_NS_ICID_RSVD3 0x07
/* ICID Bit Mask */
#define HOMEPLUG_NS_ICID_MASK 0x07
#define HOMEPLUG_NS_ICID_RSVD_MASK 0x78
/* string values in function of IC_ID values */
static const value_string homeplug_ns_icid_vals[] = {
{ HOMEPLUG_NS_ICID5130A1, "INT5130A1" },
{ HOMEPLUG_NS_ICID51X1USB, "INT51X1 (USB Option)" },
{ HOMEPLUG_NS_ICID51X1PHY, "INT51X1 (PHY Option)" },
{ HOMEPLUG_NS_ICID51X1HOST, "INT51X1 (Host/DTE Option)" },
{ HOMEPLUG_NS_ICID5130A2, "INT5130A2" },
{ HOMEPLUG_NS_ICID_RSVD1, "Reserved"},
{ HOMEPLUG_NS_ICID_RSVD2, "Reserved"},
{ HOMEPLUG_NS_ICID_RSVD3, "Reserved"},
{ 0, NULL }
};
/* Modulation Method Bit Mask */
#define HOMEPLUG_CER_MOD_MASK 0x30
/* Modulation Method Values */
#define HOMEPLUG_CER_MOD_ROBO 0x00
#define HOMEPLUG_CER_MOD_DBPSK 0x01
#define HOMEPLUG_CER_MOD_DQPSK 0x02
#define HOMEPLUG_CER_MOD_RSVD 0x03
/* string values in function of Modulation Method Values */
static const value_string homeplug_cer_mod_vals[] = {
{ HOMEPLUG_CER_MOD_ROBO, "ROBO Modulation"},
{ HOMEPLUG_CER_MOD_DBPSK, "DBPSK Modulation"},
{ HOMEPLUG_CER_MOD_DQPSK, "DQPSK Modulation"},
{ HOMEPLUG_CER_MOD_RSVD, "Reserved"},
{ 0, NULL}
};
#define HOMEPLUG_MCTRL_LEN 1
#define HOMEPLUG_MEHDR_LEN 1
#define HOMEPLUG_MELEN_LEN 1
void
proto_register_homeplug(void)
{
static hf_register_info hf[] = {
/* MAC Control Field */
{ &hf_homeplug_mctrl,
{ "MAC Control Field", "homeplug.mctrl",
FT_UINT8, BASE_DEC, NULL, 0x0, "MAC Control Field", HFILL }
},
{ &hf_homeplug_mctrl_reserved,
{ "Reserved", "homeplug.mctrl.rsvd",
FT_NONE, BASE_DEC, NULL, HOMEPLUG_MCTRL_RSVD, "Reserved", HFILL }
},
{ &hf_homeplug_mctrl_ne,
{ "Number of MAC Data Entries", "homeplug.mctrl.ne",
FT_UINT8, BASE_DEC, NULL, HOMEPLUG_MCTRL_NE, "Number of MAC Data Entries", HFILL }
},
/* MAC Entry Header */
{ &hf_homeplug_mehdr,
{ "MAC Management Entry Header", "homeplug.mehdr",
FT_NONE, BASE_DEC, NULL, 0x0, "MAC Management Entry Header", HFILL }
},
{ &hf_homeplug_mehdr_mev,
{ "MAC Entry Version", "homeplug.mehdr.mev",
FT_UINT8, BASE_DEC, NULL, HOMEPLUG_MEHDR_MEV, "MAC Entry Version", HFILL }
},
{ &hf_homeplug_mehdr_metype,
{ "MAC Entry Type", "homeplug.mehdr.metype",
FT_UINT8, BASE_HEX, NULL, HOMEPLUG_MEHDR_METYPE, "MAC Entry Type", HFILL }
},
/* MAC Entry Len */
{ &hf_homeplug_melen,
{ "MAC Management Entry Length", "homeplug.melen",
FT_UINT8, BASE_DEC, NULL, 0x0, "MAC Management Entry Length", HFILL }
},
/* MAC Management Entry */
{ &hf_homeplug_mme,
{ "MAC Management Entry Data", "homeplug.mmentry",
FT_UINT8, BASE_DEC, NULL, 0x0, "MAC Management Entry Data", HFILL }
},
/* Request Channel Estimation */
{ &hf_homeplug_rce,
{ "Request Channel Estimation", "homeplug.rce",
FT_NONE, BASE_DEC, NULL, 0x0, "Request Channel Estimation", HFILL }
},
{ &hf_homeplug_rce_cev,
{ "Channel Estimation Version", "homeplug.rce.cev",
FT_UINT8, BASE_DEC, NULL, HOMEPLUG_RCE_CEV, "Channel Estimation Version", HFILL }
},
{ &hf_homeplug_rce_rsvd,
{ "Reserved", "homeplug.rce.rsvd",
FT_NONE, BASE_DEC, NULL, HOMEPLUG_RCE_RSVD, "Reserved", HFILL }
},
/* Channel Estimation Response */
{ &hf_homeplug_cer,
{ "Channel Estimation Response", "homeplug.cer",
FT_NONE, BASE_DEC, NULL, 0x0, "Channel Estimation Response", HFILL }
},
{ &hf_homeplug_cer_cerv,
{ "Channel Estimation Response Version", "homeplug.cer.cerv",
FT_UINT8, BASE_DEC, NULL, HOMEPLUG_CER_CERV, "Channel Estimation Response Version", HFILL }
},
{ &hf_homeplug_cer_rsvd1,
{ "Reserved", "homeplug.cer.rsvd1",
FT_NONE, BASE_DEC, NULL, HOMEPLUG_CER_RSVD, "Reserved", HFILL }
},
{ &hf_homeplug_cer_rxtmi,
{ "Receive Tone Map Index", "homeplug.cer.rxtmi",
FT_UINT8, BASE_DEC, NULL, HOMEPLUG_CER_RXTMI, "Receive Tone Map Index", HFILL }
},
/* TODO must append vt[79-0] */
{ &hf_homeplug_cer_vt,
{"Valid Tone Flags", "homeplug.cer.vt",
FT_UINT8, BASE_HEX, NULL, 0x0, "Valid Tone Flags", HFILL }
},
{ &hf_homeplug_cer_rate,
{ "FEC Rate", "homeplug.cer.rate",
FT_UINT8, BASE_DEC, NULL, HOMEPLUG_CER_RATE, "FEC Rate", HFILL }
},
{ &hf_homeplug_cer_bp,
{ "Bridge Proxy", "homeplug.cer.bp",
FT_UINT8, BASE_DEC, NULL, HOMEPLUG_CER_BP, "Bridge Proxy", HFILL }
},
{ &hf_homeplug_cer_mod,
{ "Modulation Method", "homeplug.cer.mod",
FT_UINT8, BASE_DEC, VALS(&homeplug_cer_mod_vals), HOMEPLUG_CER_MOD_MASK,
"Modulation Method", HFILL }
},
{ &hf_homeplug_cer_vt11,
{ "Valid Tone Flags [83-80]", "homeplug.cer.vt11",
FT_UINT8, BASE_DEC, NULL, HOMEPLUG_CER_VT11, "Valid Tone Flags [83-80]", HFILL }
},
{ &hf_homeplug_cer_rsvd2,
{ "Reserved", "homeplug.cer.rsvd2",
FT_UINT8, BASE_DEC, NULL, HOMEPLUG_CER_RSVD2, "Reserved", HFILL }
},
{ &hf_homeplug_cer_nbdas,
{ "Number Bridged Destination Addresses", "homeplug.cer.nbdas",
FT_UINT8, BASE_DEC, NULL, HOMEPLUG_CER_NBDAS, "Number Bridged Destination Addresses", HFILL }
},
{ &hf_homeplug_cer_bda,
{ "Bridged Destination Address", "homeplug.cer.bda",
FT_ETHER, BASE_HEX, NULL, 0x0, "Bridged Destination Address", HFILL }
},
/* Request Parameters and Statistics */
{ &hf_homeplug_rps,
{ "Request Parameters and Statistics", "homeplug.rps",
FT_NONE, BASE_DEC, NULL, 0x0, "Request Parameters and Statistics", HFILL }
},
/* Parameters and Statistics Response */
{ &hf_homeplug_psr,
{ "Parameters and Statistics Response", "homeplug.psr",
FT_NONE, BASE_DEC, NULL, 0x0, "Parameters and Statistics Response", HFILL }
},
{ &hf_homeplug_psr_txack,
{ "Transmit ACK Counter", "homeplug.psr.txack",
FT_UINT16, BASE_DEC, NULL, 0x0, "Transmit ACK Counter", HFILL }
},
{ &hf_homeplug_psr_txnack,
{ "Transmit NACK Counter", "homeplug.psr.txnack",
FT_UINT16, BASE_DEC, NULL, 0x0, "Transmit NACK Counter", HFILL }
},
{ &hf_homeplug_psr_txfail,
{ "Transmit FAIL Counter", "homeplug.psr.txfail",
FT_UINT16, BASE_DEC, NULL, 0x0, "Transmit FAIL Counter", HFILL }
},
{ &hf_homeplug_psr_txcloss,
{ "Transmit Contention Loss Counter", "homeplug.psr.txcloss",
FT_UINT16, BASE_DEC, NULL, 0x0, "Transmit Contention Loss Counter", HFILL }
},
{ &hf_homeplug_psr_txcoll,
{ "Transmit Collision Counter", "homeplug.psr.txcoll",
FT_UINT16, BASE_DEC, NULL, 0x0, "Transmit Collision Counter", HFILL }
},
{ &hf_homeplug_psr_txca3lat,
{ "Transmit CA3 Latency Counter", "homeplug.psr.txca3lat",
FT_UINT16, BASE_DEC, NULL, 0x0, "Transmit CA3 Latency Counter", HFILL }
},
{ &hf_homeplug_psr_txca2lat,
{ "Transmit CA2 Latency Counter", "homeplug.psr.txca2lat",
FT_UINT16, BASE_DEC, NULL, 0x0, "Transmit CA2 Latency Counter", HFILL }
},
{ &hf_homeplug_psr_txca1lat,
{ "Transmit CA1 Latency Counter", "homeplug.psr.txca1lat",
FT_UINT16, BASE_DEC, NULL, 0x0, "Transmit CA1 Latency Counter", HFILL }
},
{ &hf_homeplug_psr_txca0lat,
{ "Transmit CA0 Latency Counter", "homeplug.psr.txca0lat",
FT_UINT16, BASE_DEC, NULL, 0x0, "Transmit CA0 Latency Counter", HFILL }
},
{ &hf_homeplug_psr_rxbp40,
{ "Receive Cumulative Bytes per 40-symbol", "homeplug.psr.rxbp40",
FT_UINT32, BASE_DEC, NULL, 0x0, "Receive Cumulative Bytes per 40-symbol", HFILL }
},
/* Network Statistics Basic */
{ &hf_homeplug_ns,
{ "Network Statistics Basic", "homeplug.ns",
FT_NONE, BASE_DEC, NULL, 0x0, "Network Statistics Basic", HFILL }
},
{ &hf_homeplug_ns_netw_ctrl_ac,
{ "Action Control", "homeplug.ns.ac",
FT_BOOLEAN, BASE_DEC, NULL, HOMEPLUG_NS_AC, "Action Control", HFILL }
},
{ &hf_homeplug_ns_netw_ctrl_icid,
{ "IC_ID", "homeplug.ns.icid",
FT_UINT8, BASE_HEX, VALS(&homeplug_ns_icid_vals), HOMEPLUG_NS_ICID_MASK, "IC_ID", HFILL }
},
{ &hf_homeplug_ns_netw_ctrl_icid_rsvd,
{ "IC_ID Reserved", "homeplug.ns.icid",
FT_NONE, BASE_DEC, NULL, 0x0, "IC_ID Reserved", HFILL }
},
{ &hf_homeplug_ns_bytes40_robo,
{ "Bytes in 40 symbols in ROBO", "homeplug.ns.bytes40_robo",
FT_UINT16, BASE_DEC, NULL, 0x0, "Bytes in 40 symbols in ROBO", HFILL }
},
{ &hf_homeplug_ns_fails_robo,
{ "Fails Received in ROBO", "homeplug.ns.fails_robo",
FT_UINT16, BASE_DEC, NULL, 0x0, "Fails Received in ROBO", HFILL }
},
{ &hf_homeplug_ns_drops_robo,
{ "Frame Drops in ROBO", "homeplug.ns.drops_robo",
FT_UINT16, BASE_DEC, NULL, 0x0, "Frame Drops in ROBO", HFILL }
},
/* TODO NETW_DA1 ... */
{ &hf_homeplug_ns_netw_da,
{ "Address of Network DA", "homeplug.ns.netw_da",
FT_ETHER, BASE_HEX, NULL, 0x0, "Address of Network DA", HFILL }
},
{ &hf_homeplug_ns_bytes40,
{ "Bytes in 40 symbols", "homeplug.ns.bytes40",
FT_UINT16, BASE_DEC, NULL, 0x0, "Bytes in 40 symbols", HFILL }
},
{ &hf_homeplug_ns_fails,
{ "Fails Received", "homeplug.ns.fails",
FT_UINT16, BASE_DEC, NULL, 0x0, "Fails Received", HFILL }
},
{ &hf_homeplug_ns_drops,
{ "Frame Drops", "homeplug.ns.drops",
FT_UINT16, BASE_DEC, NULL, 0x0, "Frame Drops", HFILL }
}
/* TODO Network Statistics Extended */
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_homeplug,
&ett_homeplug_mctrl,
&ett_homeplug_mehdr,
&ett_homeplug_rce,
&ett_homeplug_cer,
&ett_homeplug_rps,
&ett_homeplug_psr,
&ett_homeplug_ns,
&ett_homeplug_tone
};
proto_homeplug = proto_register_protocol(
"HomePlug protocol", /* Name */
"HomePlug", /* Short Name */
"homeplug" /* Abbrev */
);
proto_register_field_array(proto_homeplug, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
/* Dissection of MCTRL */
static void dissect_homeplug_mctrl(ptvcursor_t * cursor)
{
proto_item * it = NULL;
if (!ptvcursor_tree(cursor))
return;
it = ptvcursor_add_no_advance(cursor, hf_homeplug_mctrl, 1, FALSE);
homeplug_ne = tvb_get_guint8(ptvcursor_tvbuff(cursor),
ptvcursor_current_offset(cursor)) & HOMEPLUG_MCTRL_NE;
ptvcursor_push_subtree(cursor, it, ett_homeplug_mctrl);
ptvcursor_add_no_advance(cursor, hf_homeplug_mctrl_reserved, 1, FALSE);
ptvcursor_add(cursor, hf_homeplug_mctrl_ne, 1, FALSE);
ptvcursor_pop_subtree(cursor);
}
/* Dissection of MEHDR */
static void dissect_homeplug_mehdr(ptvcursor_t * cursor)
{
proto_item * it = NULL;
if (!ptvcursor_tree(cursor))
return;
it = ptvcursor_add_no_advance(cursor, hf_homeplug_mehdr, 0, FALSE);
homeplug_metype = tvb_get_guint8(ptvcursor_tvbuff(cursor),
ptvcursor_current_offset(cursor)) & HOMEPLUG_MEHDR_METYPE;
ptvcursor_push_subtree(cursor, it, ett_homeplug_mehdr);
ptvcursor_add_no_advance(cursor, hf_homeplug_mehdr_mev, 1, FALSE);
ptvcursor_add(cursor, hf_homeplug_mehdr_metype, 1, FALSE);
ptvcursor_pop_subtree(cursor);
}
/* dissection of MELEN */
static void dissect_homeplug_melen(ptvcursor_t * cursor)
{
if (!ptvcursor_tree(cursor))
return;
homeplug_melen = tvb_get_guint8(ptvcursor_tvbuff(cursor), ptvcursor_current_offset(cursor));
ptvcursor_add(cursor, hf_homeplug_melen, 1, FALSE);
}
/* Dissection of Request Channel Estimation MME */
static void dissect_homeplug_rce(ptvcursor_t * cursor)
{
proto_item * it = NULL;
if (!ptvcursor_tree(cursor))
return;
it = ptvcursor_add_no_advance(cursor, hf_homeplug_rce, homeplug_melen, FALSE);
ptvcursor_push_subtree(cursor, it, ett_homeplug_rce);
ptvcursor_add_no_advance(cursor, hf_homeplug_rce_cev, 1, FALSE);
ptvcursor_add(cursor, hf_homeplug_rce_rsvd, 1, FALSE);
ptvcursor_pop_subtree(cursor);
}
/* Dissection of Channel Estimation Response MME */
static void dissect_homeplug_cer(ptvcursor_t * cursor)
{
proto_item * it = NULL;
guint8 iTone = 0;
guint8 BP = 0;
guint8 iNBDA = 0;
if (!ptvcursor_tree(cursor))
return;
it = ptvcursor_add_no_advance(cursor, hf_homeplug_cer_cerv, homeplug_melen, FALSE);
ptvcursor_push_subtree(cursor, it, ett_homeplug_cer);
ptvcursor_add_no_advance(cursor, hf_homeplug_cer_cerv, 1, FALSE);
ptvcursor_add(cursor, hf_homeplug_cer_rsvd1, 2, FALSE);
ptvcursor_add(cursor, hf_homeplug_cer_rxtmi, 1, FALSE);
for (;iTone < 10; iTone++) {
ptvcursor_add(cursor, hf_homeplug_cer_vt, 1, FALSE);
}
ptvcursor_add_no_advance(cursor, hf_homeplug_cer_rate, 1, FALSE);
ptvcursor_add_no_advance(cursor, hf_homeplug_cer_bp, 1, FALSE);
BP = tvb_get_guint8(ptvcursor_tvbuff(cursor),
ptvcursor_current_offset(cursor)) & HOMEPLUG_CER_BP;
ptvcursor_add_no_advance(cursor, hf_homeplug_cer_mod, 1, FALSE);
ptvcursor_add(cursor, hf_homeplug_cer_vt11, 1, FALSE);
ptvcursor_add_no_advance(cursor, hf_homeplug_cer_rsvd2, 1, FALSE);
if (BP) {
iNBDA = tvb_get_guint8(ptvcursor_tvbuff(cursor),
ptvcursor_current_offset(cursor)) & HOMEPLUG_CER_NBDAS;
ptvcursor_add(cursor, hf_homeplug_cer_nbdas, 1, FALSE);
/* TODO : Check on iNBDA! INT51X1 up to 16 dba. But up to 32 for INT51X1 (Host/DTE) */
for (;iNBDA > 0; iNBDA--) {
ptvcursor_add(cursor, hf_homeplug_cer_bda, 6, FALSE);
}
}
ptvcursor_pop_subtree(cursor);
}
/* Dissection of Request Parameters and Statistics MME */
static void dissect_homeplug_rps(ptvcursor_t * cursor)
{
if (!ptvcursor_tree(cursor))
return;
ptvcursor_add(cursor, hf_homeplug_rps, 4, FALSE);
}
/* Dissection of Parameters and Statistics Response MME */
static void dissect_homeplug_psr(ptvcursor_t * cursor)
{
proto_item * it = NULL;
if (!ptvcursor_tree(cursor))
return;
it = ptvcursor_add_no_advance(cursor, hf_homeplug_psr, homeplug_melen, FALSE);
ptvcursor_push_subtree(cursor, it, ett_homeplug_psr);
ptvcursor_add(cursor, hf_homeplug_psr_txack, 2, FALSE);
ptvcursor_add(cursor, hf_homeplug_psr_txnack, 2, FALSE);
ptvcursor_add(cursor, hf_homeplug_psr_txfail, 2, FALSE);
ptvcursor_add(cursor, hf_homeplug_psr_txcloss, 2, FALSE);
ptvcursor_add(cursor, hf_homeplug_psr_txcoll, 2, FALSE);
ptvcursor_add(cursor, hf_homeplug_psr_txca3lat, 2, FALSE);
ptvcursor_add(cursor, hf_homeplug_psr_txca2lat, 2, FALSE);
ptvcursor_add(cursor, hf_homeplug_psr_txca1lat, 2, FALSE);
ptvcursor_add(cursor, hf_homeplug_psr_txca0lat, 2, FALSE);
ptvcursor_add(cursor, hf_homeplug_psr_rxbp40, 4, FALSE);
ptvcursor_pop_subtree(cursor);
}
/* Dissection of the Network Statistic MME */
static void dissect_homeplug_ns(ptvcursor_t * cursor)
{
guint8 homeplug_ns_icid_rsvd = 0;
guint8 iTone = 0;
guint16 ns_bytes40= 0;
guint64 newt_da= 0;
#define NEWT_DA_INEXISTANT G_GINT64_CONSTANT(010000000000U)
if (!ptvcursor_tree(cursor))
return;
/* TODO : test length of the MME : differentiation of NS Basic and Extended */
ptvcursor_add_with_subtree(cursor, hf_homeplug_ns, SUBTREE_UNDEFINED_LENGTH, FALSE, ett_homeplug_ns);
/*it = ptvcursor_add_no_advance(cursor, hf_homeplug_ns, homeplug_melen, FALSE);
ptvcursor_push_subtree(cursor, it, ett_homeplug_ns);*/
ptvcursor_add_no_advance(cursor, hf_homeplug_ns_netw_ctrl_ac, 1, FALSE);
homeplug_ns_icid_rsvd = tvb_get_guint8(ptvcursor_tvbuff(cursor),
ptvcursor_current_offset(cursor)) & HOMEPLUG_NS_ICID_RSVD_MASK;
if (homeplug_ns_icid_rsvd)
ptvcursor_add(cursor, hf_homeplug_ns_netw_ctrl_icid_rsvd, 1, FALSE);
else
ptvcursor_add(cursor, hf_homeplug_ns_netw_ctrl_icid, 1, FALSE);
ptvcursor_add_no_advance(cursor, hf_homeplug_ns_bytes40_robo, 2, TRUE);
ns_bytes40 = tvb_get_letohs(ptvcursor_tvbuff(cursor),
ptvcursor_current_offset(cursor));
proto_tree_add_text(ptvcursor_tree(cursor), ptvcursor_tvbuff(cursor),
ptvcursor_current_offset(cursor), 2, "MHz : %.3f", (float)(ns_bytes40)/42);
ptvcursor_advance(cursor, 2);
ptvcursor_add(cursor, hf_homeplug_ns_fails_robo, 2, TRUE);
ptvcursor_add(cursor, hf_homeplug_ns_drops_robo, 2, TRUE);
while (iTone < 15) {
newt_da = ((gint64)tvb_get_ntoh24(ptvcursor_tvbuff(cursor),
ptvcursor_current_offset(cursor))) << 24;
newt_da |= tvb_get_ntoh24(ptvcursor_tvbuff(cursor),
ptvcursor_current_offset(cursor)+3);
if (newt_da != NEWT_DA_INEXISTANT) {
ptvcursor_add_text_with_subtree(cursor, SUBTREE_UNDEFINED_LENGTH,
ett_homeplug_tone, "Tone Map #%d", iTone+1);
ptvcursor_add(cursor, hf_homeplug_ns_netw_da, 6, FALSE);
ptvcursor_add_no_advance(cursor, hf_homeplug_ns_bytes40, 2, TRUE);
ns_bytes40 = tvb_get_letohs(ptvcursor_tvbuff(cursor),
ptvcursor_current_offset(cursor));
proto_tree_add_text(ptvcursor_tree(cursor), ptvcursor_tvbuff(cursor),
ptvcursor_current_offset(cursor), 2, "MHz : %.3f", (float)(ns_bytes40)/42);
ptvcursor_advance(cursor, 2);
ptvcursor_add(cursor, hf_homeplug_ns_fails, 2, TRUE);
ptvcursor_add(cursor, hf_homeplug_ns_drops, 2, TRUE);
ptvcursor_pop_subtree(cursor);
} else
proto_tree_add_text(ptvcursor_tree(cursor), ptvcursor_tvbuff(cursor),
ptvcursor_current_offset(cursor), 12, "Tone Map #%d does not exist", iTone+1);
iTone++;
}
ptvcursor_pop_subtree(cursor);
}
static void dissect_homeplug_mme(ptvcursor_t * cursor, packet_info * pinfo)
{
switch(homeplug_metype) {
case HOMEPLUG_MME_RCE:
if (check_col(pinfo->cinfo, COL_INFO)) {
col_clear(pinfo->cinfo, COL_INFO);
col_set_str(pinfo->cinfo, COL_INFO, "Request Channel Estimation");
}
dissect_homeplug_rce(cursor);
break;
case HOMEPLUG_MME_CER:
if (check_col(pinfo->cinfo, COL_INFO)) {
col_clear(pinfo->cinfo, COL_INFO);
col_set_str(pinfo->cinfo, COL_INFO, "Channel Estimation Response");
}
dissect_homeplug_cer(cursor);
break;
case HOMEPLUG_MME_RPS:
if (check_col(pinfo->cinfo, COL_INFO)) {
col_clear(pinfo->cinfo, COL_INFO);
col_set_str(pinfo->cinfo, COL_INFO, "Request Parameters and Statistics");
}
dissect_homeplug_rps(cursor);
break;
case HOMEPLUG_MME_PSR:
if (check_col(pinfo->cinfo, COL_INFO)) {
col_clear(pinfo->cinfo, COL_INFO);
col_set_str(pinfo->cinfo, COL_INFO, "Parameters and Statistics Response");
}
dissect_homeplug_psr(cursor);
break;
case HOMEPLUG_MME_NS:
if (check_col(pinfo->cinfo, COL_INFO)) {
col_clear(pinfo->cinfo, COL_INFO);
col_set_str(pinfo->cinfo, COL_INFO, "Network Statistics");
}
dissect_homeplug_ns(cursor);
break;
}
}
#define TVB_LEN_GREATEST 1
#define TVB_LEN_UNDEF 0
#define TVB_LEN_SHORTEST -1
static int check_tvb_length(ptvcursor_t *cursor, const gint length)
{
if (!cursor)
return TVB_LEN_UNDEF;
if (tvb_reported_length_remaining(ptvcursor_tvbuff(cursor),
ptvcursor_current_offset(cursor)) < length)
return TVB_LEN_SHORTEST;
return TVB_LEN_GREATEST;
}
static void
dissect_homeplug(tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree)
{
proto_item * it= NULL;
proto_tree * homeplug_tree= NULL;
ptvcursor_t * cursor= NULL;
if (check_col(pinfo->cinfo, COL_PROTOCOL))
col_set_str(pinfo->cinfo, COL_PROTOCOL, "HomePlug");
/* Clear out stuff in the info column */
if (check_col(pinfo->cinfo, COL_INFO)) {
col_clear(pinfo->cinfo, COL_INFO);
col_set_str(pinfo->cinfo, COL_INFO, "MAC Management");
}
homeplug_offset = 0;
if (tree) {
it = proto_tree_add_item(tree, proto_homeplug, tvb, homeplug_offset, -1, FALSE);
homeplug_tree = proto_item_add_subtree(it, ett_homeplug);
cursor = ptvcursor_new(homeplug_tree, tvb, 0);
}
/* We do not have enough data to read mctrl field stop the dissection */
if (check_tvb_length(cursor, HOMEPLUG_MCTRL_LEN) != TVB_LEN_SHORTEST) {
dissect_homeplug_mctrl(cursor);
/** homeplug_ne indicates the number of MME entries. This field is fetched
* from MCTRL.
*/
for (; homeplug_ne > 0; homeplug_ne--) {
/* Check we have enough data in tvb to read MEHDR */
if (check_tvb_length(cursor, HOMEPLUG_MEHDR_LEN) == TVB_LEN_SHORTEST)
break;
dissect_homeplug_mehdr(cursor);
/* Check we have enough data in tvb to read MELEN */
if (check_tvb_length(cursor, HOMEPLUG_MELEN_LEN) == TVB_LEN_SHORTEST)
break;
dissect_homeplug_melen(cursor);
dissect_homeplug_mme(cursor, pinfo);
}
}
if (cursor)
ptvcursor_free(cursor);
}
static dissector_handle_t homeplug_handle;
void
proto_reg_handoff_homeplug(void)
{
static gboolean initialised = FALSE;
if (!initialised) {
homeplug_handle = create_dissector_handle(dissect_homeplug, proto_homeplug);
dissector_add("ethertype", ETHERTYPE_HOMEPLUG, homeplug_handle);
initialised = TRUE;
}
}
Reference in New Issue View Git Blame Copy Permalink