nexmon – Rev 1
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/* packet-macmgmt.c
* Routines for docsis Mac Management Header dissection
* Copyright 2002, Anand V. Narwani <anand[AT]narwani.org>
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <epan/packet.h>
#define MGT_SYNC 1
#define MGT_UCD 2
#define MGT_MAP 3
#define MGT_RNG_REQ 4
#define MGT_RNG_RSP 5
#define MGT_REG_REQ 6
#define MGT_REG_RSP 7
#define MGT_UCC_REQ 8
#define MGT_UCC_RSP 9
#define MGT_TRI_TCD 10
#define MGT_TRI_TSI 11
#define MGT_BPKM_REQ 12
#define MGT_BPKM_RSP 13
#define MGT_REG_ACK 14
#define MGT_DSA_REQ 15
#define MGT_DSA_RSP 16
#define MGT_DSA_ACK 17
#define MGT_DSC_REQ 18
#define MGT_DSC_RSP 19
#define MGT_DSC_ACK 20
#define MGT_DSD_REQ 21
#define MGT_DSD_RSP 22
#define MGT_DCC_REQ 23
#define MGT_DCC_RSP 24
#define MGT_DCC_ACK 25
#define MGT_DCI_REQ 26
#define MGT_DCI_RSP 27
#define MGT_UP_DIS 28
#define MGT_TYPE29UCD 29
#define MGT_INIT_RNG_REQ 30
#define MGT_TEST_REQ 31
#define MGT_DS_CH_DESC 32
#define MGT_MDD 33
#define MGT_B_INIT_RNG_REQ 34
#define MGT_TYPE35UCD 35
#define MGT_DBC_REQ 36
#define MGT_DBC_RSP 37
#define MGT_DBC_ACK 38
#define MGT_DPV_REQ 39
#define MGT_DPV_RSP 40
#define MGT_CM_STATUS 41
#define MGT_CM_CTRL_REQ 42
#define MGT_CM_CTRL_RSP 43
#define MGT_REG_REQ_MP 44
#define MGT_REG_RSP_MP 45
#define MGT_EM_REQ 46
#define MGT_EM_RSP 47
#define MGT_STATUS_ACK 48
#define MGT_OCD 49
#define MGT_DPD 50
void proto_register_docsis_mgmt(void);
void proto_reg_handoff_docsis_mgmt(void);
/* Initialize the protocol and registered fields */
static int proto_docsis_mgmt = -1;
static int hf_docsis_mgt_dst_addr = -1;
static int hf_docsis_mgt_src_addr = -1;
static int hf_docsis_mgt_msg_len = -1;
static int hf_docsis_mgt_dsap = -1;
static int hf_docsis_mgt_ssap = -1;
static int hf_docsis_mgt_control = -1;
static int hf_docsis_mgt_version = -1;
static int hf_docsis_mgt_type = -1;
static int hf_docsis_mgt_rsvd = -1;
static dissector_table_t docsis_mgmt_dissector_table;
/* Initialize the subtree pointers */
static gint ett_docsis_mgmt = -1;
static gint ett_mgmt_pay = -1;
static const value_string mgmt_type_vals[] = {
{MGT_SYNC, "Timing Synchronisation"},
{MGT_UCD, "Upstream Channel Descriptor"},
{MGT_TYPE29UCD, "Upstream Channel Descriptor Type 29"},
{MGT_TYPE35UCD, "Upstream Channel Descriptor Type 35"},
{MGT_MAP, "Upstream Bandwidth Allocation"},
{MGT_RNG_REQ, "Ranging Request"},
{MGT_RNG_RSP, "Ranging Response"},
{MGT_REG_REQ, "Registration Request"},
{MGT_REG_RSP, "Registration Response"},
{MGT_UCC_REQ, "Upstream Channel Change Request"},
{MGT_UCC_RSP, "Upstream Channel Change Response"},
{MGT_TRI_TCD, "Telephony Channel Descriptor"},
{MGT_TRI_TSI, "Termination System Information"},
{MGT_BPKM_REQ, "Privacy Key Management Request"},
{MGT_BPKM_RSP, "Privacy Key Management Response"},
{MGT_REG_ACK, "Registration Acknowledge"},
{MGT_DSA_REQ, "Dynamic Service Addition Request"},
{MGT_DSA_RSP, "Dynamic Service Addition Response"},
{MGT_DSA_ACK, "Dynamic Service Addition Acknowledge"},
{MGT_DSC_REQ, "Dynamic Service Change Request"},
{MGT_DSC_RSP, "Dynamic Service Change Response"},
{MGT_DSC_ACK, "Dynamic Service Change Acknowledge"},
{MGT_DSD_REQ, "Dynamic Service Delete Request"},
{MGT_DSD_RSP, "Dynamic Service Delete Response"},
{MGT_DCC_REQ, "Dynamic Channel Change Request"},
{MGT_DCC_RSP, "Dynamic Channel Change Response"},
{MGT_DCC_ACK, "Dynamic Channel Change Acknowledge"},
{MGT_DCI_REQ, "Device Class Identification Request"},
{MGT_DCI_RSP, "Device Class Identification Response"},
{MGT_UP_DIS, "Upstream Channel Disable"},
{MGT_INIT_RNG_REQ, "Initial Ranging Request"},
{MGT_TEST_REQ, "Test Request Message"},
{MGT_DS_CH_DESC, "Downstream Channel Descriptor"},
{MGT_MDD, "MAC Domain Descriptor"},
{MGT_B_INIT_RNG_REQ, "Bonded Initial Ranging Request"},
{MGT_DBC_REQ, "Dynamic Bonding Change Request"},
{MGT_DBC_RSP, "Dynamic Bonding Change Response"},
{MGT_DBC_ACK, "Dynamic Bonding Change Acknowledge"},
{MGT_DPV_REQ, "DOCSIS Path Verify Request"},
{MGT_DPV_RSP, "DOCSIS Path Verify Response"},
{MGT_CM_STATUS, "CM Status Report"},
{MGT_CM_CTRL_REQ, "CM Control Request"},
{MGT_CM_CTRL_RSP, "CM Control Response"},
{MGT_REG_REQ_MP, "Multipart Registration Request"},
{MGT_REG_RSP_MP, "Multipart Registration Response"},
{MGT_EM_REQ, "Energy Management Request"},
{MGT_EM_RSP, "Energy Management Response"},
{MGT_STATUS_ACK, "Status Report Acknowledge"},
{MGT_OCD, "OFDM Channel Descriptor"},
{MGT_DPD, "Downstream Profile Descriptor"},
{0, NULL}
};
/* Dissection */
static int
dissect_macmgmt (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree, void* data _U_)
{
guint16 msg_len;
proto_item *mgt_hdr_it;
proto_tree *mgt_hdr_tree;
tvbuff_t *payload_tvb;
guint8 type;
col_set_str (pinfo->cinfo, COL_PROTOCOL, "DOCSIS MGMT");
col_clear(pinfo->cinfo, COL_INFO);
set_address_tvb (&pinfo->dl_src, AT_ETHER, 6, tvb, 6);
copy_address_shallow(&pinfo->src, &pinfo->dl_src);
set_address_tvb (&pinfo->dl_dst, AT_ETHER, 6, tvb, 0);
copy_address_shallow(&pinfo->dst, &pinfo->dl_dst);
if (tree)
{
mgt_hdr_it =
proto_tree_add_protocol_format (tree, proto_docsis_mgmt, tvb, 0, 20,
"Mac Management");
mgt_hdr_tree = proto_item_add_subtree (mgt_hdr_it, ett_docsis_mgmt);
proto_tree_add_item (mgt_hdr_tree, hf_docsis_mgt_dst_addr, tvb, 0, 6,
ENC_NA);
proto_tree_add_item (mgt_hdr_tree, hf_docsis_mgt_src_addr, tvb, 6, 6,
ENC_NA);
proto_tree_add_item (mgt_hdr_tree, hf_docsis_mgt_msg_len, tvb, 12, 2,
ENC_BIG_ENDIAN);
proto_tree_add_item (mgt_hdr_tree, hf_docsis_mgt_dsap, tvb, 14, 1,
ENC_BIG_ENDIAN);
proto_tree_add_item (mgt_hdr_tree, hf_docsis_mgt_ssap, tvb, 15, 1,
ENC_BIG_ENDIAN);
proto_tree_add_item (mgt_hdr_tree, hf_docsis_mgt_control, tvb, 16, 1,
ENC_BIG_ENDIAN);
proto_tree_add_item (mgt_hdr_tree, hf_docsis_mgt_version, tvb, 17, 1,
ENC_BIG_ENDIAN);
proto_tree_add_item (mgt_hdr_tree, hf_docsis_mgt_type, tvb, 18, 1,
ENC_BIG_ENDIAN);
proto_tree_add_item (mgt_hdr_tree, hf_docsis_mgt_rsvd, tvb, 19, 1,
ENC_BIG_ENDIAN);
}
/* Code to Call subdissector */
/* sub-dissectors are based on the type field */
type = tvb_get_guint8 (tvb, 18);
msg_len = tvb_get_ntohs (tvb, 12);
payload_tvb = tvb_new_subset_length (tvb, 20, msg_len - 6);
if (!dissector_try_uint(docsis_mgmt_dissector_table, type, payload_tvb, pinfo, tree))
call_data_dissector(payload_tvb, pinfo, tree);
return tvb_captured_length(tvb);
}
/* Register the protocol with Wireshark */
void
proto_register_docsis_mgmt (void)
{
static hf_register_info hf[] = {
{&hf_docsis_mgt_dst_addr,
{"Destination Address", "docsis_mgmt.dst",
FT_ETHER, BASE_NONE, NULL, 0x0,
NULL, HFILL}
},
{&hf_docsis_mgt_src_addr,
{"Source Address", "docsis_mgmt.src",
FT_ETHER, BASE_NONE, NULL, 0x0,
NULL, HFILL}
},
{&hf_docsis_mgt_msg_len,
{"Message Length - DSAP to End (Bytes)", "docsis_mgmt.msglen",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Message Length", HFILL}
},
{&hf_docsis_mgt_dsap,
{"DSAP [0x00]", "docsis_mgmt.dsap",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Destination SAP", HFILL}
},
{&hf_docsis_mgt_ssap,
{"SSAP [0x00]", "docsis_mgmt.ssap",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Source SAP", HFILL}
},
{&hf_docsis_mgt_control,
{"Control [0x03]", "docsis_mgmt.control",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Control", HFILL}
},
{&hf_docsis_mgt_version,
{"Version", "docsis_mgmt.version",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL}
},
{&hf_docsis_mgt_type,
{"Type", "docsis_mgmt.type",
FT_UINT8, BASE_DEC, VALS (mgmt_type_vals), 0x0,
NULL, HFILL}
},
{&hf_docsis_mgt_rsvd,
{"Reserved [0x00]", "docsis_mgmt.rsvd",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Reserved", HFILL}
},
};
static gint *ett[] = {
&ett_docsis_mgmt,
&ett_mgmt_pay,
};
proto_docsis_mgmt = proto_register_protocol ("DOCSIS Mac Management",
"DOCSIS MAC MGMT",
"docsis_mgmt");
proto_register_field_array (proto_docsis_mgmt, hf, array_length (hf));
proto_register_subtree_array (ett, array_length (ett));
docsis_mgmt_dissector_table = register_dissector_table ("docsis_mgmt",
"DOCSIS Mac Management", proto_docsis_mgmt,
FT_UINT8, BASE_DEC);
register_dissector ("docsis_mgmt", dissect_macmgmt, proto_docsis_mgmt);
}
void
proto_reg_handoff_docsis_mgmt (void)
{
#if 0
dissector_handle_t docsis_mgmt_handle;
docsis_mgmt_handle = find_dissector ("docsis_mgmt");
dissector_add_uint ("docsis", 0x03, docsis_mgmt_handle);
#endif
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local Variables:
* c-basic-offset: 2
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=2 tabstop=8 expandtab:
* :indentSize=2:tabSize=8:noTabs=true:
*/