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wireshark/plugins/epan/wimax/mac_mgmt_msg_decoder.c

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/* mac_mgmt_msg_decoder.c
* WiMax MAC Management Message decoder
*
* Copyright (c) 2007 by Intel Corporation.
*
* Author: Lu Pan <lu.pan@intel.com>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1999 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
/* Include files */
#include "config.h"
#include <epan/packet.h>
#include <epan/expert.h>
#include "wimax_mac.h"
void proto_register_mac_mgmt_msg(void);
void proto_reg_handoff_mac_mgmt_msg(void);
static gint proto_mac_mgmt_msg_decoder = -1;
static gint ett_mac_mgmt_msg_decoder = -1;
static gint hf_mac_mgmt_msg_type = -1;
static gint hf_mac_mgmt_msg_values = -1;
static expert_field ei_empty_payload = EI_INIT;
static dissector_table_t subdissector_message_table;
/* WIMAX MAC Management message type info */
static const value_string mgt_msg_abbrv_vals[] = {
{ MAC_MGMT_MSG_UCD, "UCD" },
{ MAC_MGMT_MSG_DCD, "DCD" },
{ MAC_MGMT_MSG_DL_MAP, "DL-MAP" },
{ MAC_MGMT_MSG_UL_MAP, "UL-MAP" },
{ MAC_MGMT_MSG_RNG_REQ, "RNG-REQ" },
{ MAC_MGMT_MSG_RNG_RSP, "RNG-RSP" },
{ MAC_MGMT_MSG_REG_REQ, "REG-REQ" },
{ MAC_MGMT_MSG_REG_RSP, "REG-RSP" },
{ 8, "Reserved8" },
{ MAC_MGMT_MSG_PKM_REQ, "PKM-REQ" },
{ MAC_MGMT_MSG_PKM_RSP, "PKM-RSP" },
{ MAC_MGMT_MSG_DSA_REQ, "DSA-REQ" },
{ MAC_MGMT_MSG_DSA_RSP, "DSA-RSP" },
{ MAC_MGMT_MSG_DSA_ACK, "DSA-ACK" },
{ MAC_MGMT_MSG_DSC_REQ, "DSC-REQ" },
{ MAC_MGMT_MSG_DSC_RSP, "DSC-RSP" },
{ MAC_MGMT_MSG_DSC_ACK, "DSC-ACK" },
{ MAC_MGMT_MSG_DSD_REQ, "DSD-REQ" },
{ MAC_MGMT_MSG_DSD_RSP, "DSD-RSP" },
{ 19, "Reserved19" },
{ 20, "Reserved20" },
{ MAC_MGMT_MSG_MCA_REQ, "MCA-REQ" },
{ MAC_MGMT_MSG_MCA_RSP, "MCA-RSP" },
{ MAC_MGMT_MSG_DBPC_REQ, "DBPC-REQ" },
{ MAC_MGMT_MSG_DBPC_RSP, "DBPC-RSP" },
{ MAC_MGMT_MSG_RES_CMD, "RES-CMD" },
{ MAC_MGMT_MSG_SBC_REQ, "SBC-REQ" },
{ MAC_MGMT_MSG_SBC_RSP, "SBC-RSP" },
{ MAC_MGMT_MSG_CLK_CMP, "CLK-CMP" },
{ MAC_MGMT_MSG_DREG_CMD, "DREG-CMD" },
{ MAC_MGMT_MSG_DSX_RVD, "DSX-RVD" },
{ MAC_MGMT_MSG_TFTP_CPLT, "TFTP-CPLT" },
{ MAC_MGMT_MSG_TFTP_RSP, "TFTP-RSP" },
{ MAC_MGMT_MSG_ARQ_FEEDBACK, "ARQ-FEEDBACK" },
{ MAC_MGMT_MSG_ARQ_DISCARD, "ARQ-DISCARD" },
{ MAC_MGMT_MSG_ARQ_RESET, "ARQ-RESET" },
{ MAC_MGMT_MSG_REP_REQ, "REP-REQ" },
{ MAC_MGMT_MSG_REP_RSP, "REP-RSP" },
{ MAC_MGMT_MSG_FPC, "FPC" },
{ MAC_MGMT_MSG_MSH_NCFG, "MSH-NCFG" },
{ MAC_MGMT_MSG_MSH_NENT, "MSH-NENT" },
{ MAC_MGMT_MSG_MSH_DSCH, "MSH-DSCH" },
{ MAC_MGMT_MSG_MSH_CSCH, "MSH-CSCH" },
{ MAC_MGMT_MSG_MSH_CSCF, "MSH-CSCF" },
{ MAC_MGMT_MSG_AAS_FBCK_REQ, "AAS-FBCK_REQ" },
{ MAC_MGMT_MSG_AAS_FBCK_RSP, "AAS-FBCK_RSP" },
{ MAC_MGMT_MSG_AAS_BEAM_SELECT, "AAS-BEAM_SELECT" },
{ MAC_MGMT_MSG_AAS_BEAM_REQ, "AAS-BEAM_REQ" },
{ MAC_MGMT_MSG_AAS_BEAM_RSP, "AAS-BEAM_RSP" },
{ MAC_MGMT_MSG_DREG_REQ, "DREG-REQ" },
{ MAC_MGMT_MSG_MOB_SLP_REQ, "MOB-SLP-REQ" },
{ MAC_MGMT_MSG_MOB_SLP_RSP, "MOB-SLP-RSP" },
{ MAC_MGMT_MSG_MOB_TRF_IND, "MOB-TRF-IND" },
{ MAC_MGMT_MSG_MOB_NBR_ADV, "MOB-NBR-ADV" },
{ MAC_MGMT_MSG_MOB_SCN_REQ, "MOB-SCN-REQ" },
{ MAC_MGMT_MSG_MOB_SCN_RSP, "MOB-SCN-RSP" },
{ MAC_MGMT_MSG_MOB_BSHO_REQ, "MOB-BSHO-REQ" },
{ MAC_MGMT_MSG_MOB_MSHO_REQ, "MOB-MSHO-REQ" },
{ MAC_MGMT_MSG_MOB_BSHO_RSP, "MOB-BSHO-RSP" },
{ MAC_MGMT_MSG_MOB_HO_IND, "MOB-HO-IND" },
{ MAC_MGMT_MSG_MOB_SCN_REP, "MOB-SCN-REP" },
{ MAC_MGMT_MSG_MOB_PAG_ADV, "MOB-PAG-ADV" },
{ MAC_MGMT_MSG_MBS_MAP, "MBS-MAP" },
{ MAC_MGMT_MSG_PMC_REQ, "PMC-REQ" },
{ MAC_MGMT_MSG_PMC_RSP, "PMC-RSP" },
{ MAC_MGMT_MSG_PRC_LT_CTRL, "PRC-LT-CTRL" },
{ MAC_MGMT_MSG_MOB_ASC_REP, "MOB-ASC-REP" },
{ 0, NULL }
};
static value_string_ext mgt_msg_abbrv_vals_ext = VALUE_STRING_EXT_INIT(mgt_msg_abbrv_vals);
static int dissect_mac_mgmt_msg_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
guint offset = 0;
guint message_type;
proto_item *message_item;
proto_tree *message_tree;
const char* mgt_msg_str;
message_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_decoder, tvb, offset, -1,
"MAC Management Message Type (%u bytes)", tvb_reported_length(tvb));
message_tree = proto_item_add_subtree(message_item, ett_mac_mgmt_msg_decoder);
if (tvb_reported_length(tvb) == 0)
{
expert_add_info(pinfo, message_item, &ei_empty_payload);
return tvb_captured_length(tvb);
}
/* Get the payload type */
message_type = tvb_get_guint8(tvb, offset);
proto_tree_add_item(message_tree, hf_mac_mgmt_msg_type, tvb, offset, 1, ENC_NA);
mgt_msg_str = val_to_str_ext_const(message_type, &mgt_msg_abbrv_vals_ext, "Unknown");
/* Display message type in Info column */
col_append_sep_str(pinfo->cinfo, COL_INFO, ", ", mgt_msg_str);
/* add the payload type into the info column */
if (try_val_to_str_ext(message_type, &mgt_msg_abbrv_vals_ext) == NULL)
{
/* display the MAC payload in Hex */
proto_tree_add_item(message_tree, hf_mac_mgmt_msg_values, tvb, offset, -1, ENC_NA);
return 1;
}
/* add the MAC header info to parent*/
proto_item_append_text(proto_tree_get_parent(tree), ", %s", mgt_msg_str);
/* Decode and display the MAC payload */
if (!dissector_try_uint(subdissector_message_table, message_type,
tvb_new_subset_remaining(tvb, 1), pinfo, tree))
{
proto_tree_add_item(message_tree, hf_mac_mgmt_msg_values, tvb, offset, -1, ENC_NA);
}
return tvb_captured_length(tvb);
}
/* Register Wimax Mac Payload Protocol and Dissector */
void proto_register_mac_mgmt_msg(void)
{
/* Payload display */
static hf_register_info hf[] =
{
{
&hf_mac_mgmt_msg_type,
{
"MAC Management Message Type", "wmx.macmgtmsgtype",
FT_UINT8, BASE_DEC | BASE_EXT_STRING, &mgt_msg_abbrv_vals_ext, 0x0,
NULL, HFILL
}
},
{
&hf_mac_mgmt_msg_values,
{
"Values", "wmx.values",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL
}
},
};
/* Setup protocol subtree array */
static gint *ett[] =
{
&ett_mac_mgmt_msg_decoder,
};
static ei_register_info ei[] = {
{ &ei_empty_payload, { "wmx.empty_payload", PI_PROTOCOL, PI_ERROR, "Error: Mac payload tvb is empty !", EXPFILL }},
};
expert_module_t* expert_mac_mgmt;
proto_mac_mgmt_msg_decoder = proto_register_protocol (
"WiMax MAC Management Message", /* name */
"MGMT MSG", /* short name */
"wmx.mgmt" /* abbrev */
);
proto_register_field_array(proto_mac_mgmt_msg_decoder, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
expert_mac_mgmt = expert_register_protocol(proto_mac_mgmt_msg_decoder);
expert_register_field_array(expert_mac_mgmt, ei, array_length(ei));
subdissector_message_table = register_dissector_table("wmx.mgmtmsg",
"WiMax MAC Management Message", proto_mac_mgmt_msg_decoder, FT_UINT8, BASE_DEC);
/* Register dissector by name */
register_dissector("wmx_mac_mgmt_msg_decoder", dissect_mac_mgmt_msg_decoder,
proto_mac_mgmt_msg_decoder);
}
void proto_reg_handoff_mac_mgmt_msg(void)
{
dissector_handle_t mgt_msg_handle;
/* Find the dissectors that appear to be supported through a third-party plugin
Keep here until third-party plugin can register through the new "wmx.mgmtmsg"
subdissector */
/* find the Multicast Assignment request message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_mca_req_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_MCA_REQ, mgt_msg_handle );
/* find the Multicast Assignment response message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_mca_rsp_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_MCA_RSP, mgt_msg_handle );
/* find the DL Burst Profile Change request message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_dbpc_req_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_DBPC_REQ, mgt_msg_handle );
/* find the DL Burst Profile Change response message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_dbpc_rsp_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_DBPC_RSP, mgt_msg_handle );
/* find the Config File TFTP Complete message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_tftp_cplt_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_TFTP_CPLT, mgt_msg_handle );
/* find the Config File TFTP Complete response message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_tftp_rsp_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_TFTP_RSP, mgt_msg_handle );
/* find the Mesh Network Configuration message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_ncfg_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_MSH_NCFG, mgt_msg_handle );
/* find the Mesh Network Entry message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_nent_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_MSH_NENT, mgt_msg_handle );
/* find the Mesh Distributed Schedule message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_dsch_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_MSH_DSCH, mgt_msg_handle );
/* find the Mesh Centralized Schedule message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_csch_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_MSH_CSCH, mgt_msg_handle );
/* find the Mesh Centralized Schedule Configuration message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_cscf_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_MSH_CSCF, mgt_msg_handle );
/* find the AAS Beam request message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_aas_beam_req_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_AAS_BEAM_REQ, mgt_msg_handle );
/* find the AAS Beam response message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_aas_beam_rsp_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_AAS_BEAM_RSP, mgt_msg_handle );
/* find the Sleep Request message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_mob_slp_req_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_MOB_SLP_REQ, mgt_msg_handle );
/* find the Sleep Response message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_mob_slp_rsp_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_MOB_SLP_RSP, mgt_msg_handle );
/* find the Traffic Indication message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_mob_trf_ind_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_MOB_TRF_IND, mgt_msg_handle );
/* find the Neighbor Advertisement message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_mob_nbr_adv_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_MOB_NBR_ADV, mgt_msg_handle );
/* find the Scanning Interval Allocation Request message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_mob_scn_req_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_MOB_SCN_REQ, mgt_msg_handle );
/* find the Scanning Interval Allocation Response message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_mob_scn_rsp_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_MOB_SCN_RSP, mgt_msg_handle );
/* find the BS HO Request message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_mob_bsho_req_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_MOB_BSHO_REQ, mgt_msg_handle );
/* find the MS HO Request message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_mob_msho_req_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_MOB_MSHO_REQ, mgt_msg_handle );
/* find the BS HO Response message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_mob_bsho_rsp_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_MOB_BSHO_RSP, mgt_msg_handle );
/* find the HO Indication message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_mob_ho_ind_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_MOB_HO_IND, mgt_msg_handle );
/* find the Scanning Result Report message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_mob_scn_rep_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_MOB_SCN_REP, mgt_msg_handle );
/* find the BS Broadcast Paging message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_mob_pag_adv_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_MOB_PAG_ADV, mgt_msg_handle );
/* find the MBS MAP message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_mbs_map_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_MBS_MAP, mgt_msg_handle );
/* find the Association Result Report message handler */
mgt_msg_handle = find_dissector("mac_mgmt_msg_mob_asc_rep_handler");
if (mgt_msg_handle)
dissector_add_uint( "wmx.mgmtmsg", MAC_MGMT_MSG_MOB_ASC_REP, mgt_msg_handle );
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
* :indentSize=8:tabSize=8:noTabs=false:
*/
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