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/* msg_dsd.c
* WiMax MAC Management DSD-REQ/RSP Messages decoder
*
* Copyright (c) 2007 by Intel Corporation.
*
* Author: Lu Pan <lu.pan@intel.com>
*
* $Id$
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1999 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.
*/
/* Include files */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/*
#define DEBUG
*/
#include <glib.h>
#include <epan/packet.h>
#include "wimax_tlv.h"
#include "wimax_mac.h"
#include "wimax_utils.h"
extern gint proto_mac_mgmt_msg_dsa_decoder;
/* forward reference */
void proto_register_mac_mgmt_msg_dsd(void);
void dissect_mac_mgmt_msg_dsd_req_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
void dissect_mac_mgmt_msg_dsd_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
gint proto_mac_mgmt_msg_dsd_decoder = -1;
static gint ett_mac_mgmt_msg_dsd_req_decoder = -1;
static gint ett_mac_mgmt_msg_dsd_rsp_decoder = -1;
static gint ett_dsd_ul_sfe_decoder = -1;
static gint ett_dsd_dl_sfe_decoder = -1;
static gint ett_dsd_hmac_tuple = -1;
static gint ett_dsd_cmac_tuple = -1;
/* Setup protocol subtree array */
static gint *ett[] =
{
&ett_mac_mgmt_msg_dsd_req_decoder,
&ett_mac_mgmt_msg_dsd_rsp_decoder,
&ett_dsd_ul_sfe_decoder,
&ett_dsd_dl_sfe_decoder,
&ett_dsd_hmac_tuple,
&ett_dsd_cmac_tuple,
};
static gchar *dsd_msgs[] =
{
"Dynamic Service Deletion Request (DSD-REQ)",
"Dynamic Service Deletion Response (DSD-RSP)"
};
/* fix fields */
static gint hf_dsd_req_message_type = -1;
static gint hf_dsd_transaction_id = -1;
static gint hf_dsd_service_flow_id = -1;
static gint hf_dsd_rsp_message_type = -1;
static gint hf_dsd_confirmation_code = -1;
static gint hf_dsd_invalid_tlv = -1;
static gint hf_dsd_unknown_type = -1;
/* DSx display */
static hf_register_info hf[] =
{
{
&hf_dsd_req_message_type,
{
"MAC Management Message Type", "wmx.macmgtmsgtype.dsd_req",
FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL
}
},
{
&hf_dsd_rsp_message_type,
{
"MAC Management Message Type", "wmx.macmgtmsgtype.dsd_rsp",
FT_BYTES, BASE_HEX, NULL, 0, "", HFILL
}
},
{
&hf_dsd_confirmation_code,
{
"Confirmation code", "wmx.dsd.confirmation_code",
FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL
}
},
{
&hf_dsd_service_flow_id,
{
"Service Flow ID", "wmx.dsd.service_flow_id",
FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL
}
},
{
&hf_dsd_transaction_id,
{
"Transaction ID", "wmx.dsd.transaction_id",
FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL
}
}
};
/* Register Wimax Mac Payload Protocol and Dissector */
void proto_register_mac_mgmt_msg_dsd(void)
{
if (proto_mac_mgmt_msg_dsd_decoder == -1)
{
proto_mac_mgmt_msg_dsd_decoder = proto_mac_mgmt_msg_dsa_decoder;
proto_register_field_array(proto_mac_mgmt_msg_dsd_decoder, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
}
void dissect_mac_mgmt_msg_dsd_req_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
guint offset = 0;
guint tvb_len, payload_type, tlv_len, tlv_value_offset;
gint tlv_type;
proto_item *dsd_item = NULL;
proto_tree *dsd_tree = NULL;
proto_tree *tlv_tree = NULL;
tlv_info_t tlv_info;
if(tree)
{ /* we are being asked for details */
/* get the message type */
payload_type = tvb_get_guint8(tvb, offset);
/* ensure the message type is DSD REQ/RSP/ACK */
if(payload_type != MAC_MGMT_MSG_DSD_REQ)
return;
/* Get the tvb reported length */
tvb_len = tvb_reported_length(tvb);
/* display MAC message type */
dsd_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_dsd_decoder, tvb, offset, tvb_len, "%s (%u bytes)", dsd_msgs[payload_type - MAC_MGMT_MSG_DSD_REQ], tvb_len);
/* add MAC DSx subtree */
dsd_tree = proto_item_add_subtree(dsd_item, ett_mac_mgmt_msg_dsd_req_decoder);
/* Decode and display the DSD message */
/* display the Message Type */
proto_tree_add_item(dsd_tree, hf_dsd_req_message_type, tvb, offset, 1, FALSE);
/* move to next field */
offset++;
/* display the Transaction ID */
proto_tree_add_item(dsd_tree, hf_dsd_transaction_id, tvb, offset, 2, FALSE);
/* move to next field */
offset += 2;
/* display the Service Flow ID */
proto_tree_add_item(dsd_tree, hf_dsd_service_flow_id, tvb, offset, 4, FALSE);
/* move to next field */
offset += 4;
/* process DSD REQ message TLV Encode Information */
while(offset < tvb_len)
{ /* get the TLV information */
init_tlv_info(&tlv_info, tvb, offset);
/* get the TLV type */
tlv_type = get_tlv_type(&tlv_info);
/* get the TLV length */
tlv_len = get_tlv_length(&tlv_info);
if(tlv_type == -1 || tlv_len > MAX_TLV_LEN || tlv_len < 1)
{ /* invalid tlv info */
if(pinfo->cinfo)
{
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "DSD-REQ TLV error");
}
proto_tree_add_item(dsd_tree, hf_dsd_invalid_tlv, tvb, offset, (tvb_len - offset), FALSE);
break;
}
/* get the TLV value offset */
tlv_value_offset = get_tlv_value_offset(&tlv_info);
#ifdef DEBUG /* for debug only */
proto_tree_add_protocol_format(dsd_tree, proto_mac_mgmt_msg_dsd_decoder, tvb, offset, tlv_len + tlv_value_offset, "DSD-REQ TLV Type: %u (%u bytes, offset=%u, tvb_len=%u)", tlv_type, tlv_len + tlv_value_offset, offset, tvb_len);
#endif
/* update the offset */
offset += tlv_value_offset;
/* process TLV */
switch (tlv_type)
{
case HMAC_TUPLE: /* Table 348d */
/* decode and display the HMAC Tuple */
tlv_tree = add_protocol_subtree(&tlv_info, ett_mac_mgmt_msg_dsd_req_decoder, dsd_tree, proto_mac_mgmt_msg_dsd_decoder, tvb, offset, tlv_len, "HMAC Tuple (%u byte(s))", tlv_len);
wimax_hmac_tuple_decoder(tlv_tree, tvb, offset, tlv_len);
break;
case CMAC_TUPLE: /* Table 348b */
/* decode and display the CMAC Tuple */
tlv_tree = add_protocol_subtree(&tlv_info, ett_mac_mgmt_msg_dsd_req_decoder, dsd_tree, proto_mac_mgmt_msg_dsd_decoder, tvb, offset, tlv_len, "CMAC Tuple (%u byte(s))", tlv_len);
wimax_cmac_tuple_decoder(tlv_tree, tvb, offset, tlv_len);
break;
default:
/* display the unknown tlv in hex */
tlv_tree = add_protocol_subtree(&tlv_info, ett_mac_mgmt_msg_dsd_req_decoder, dsd_tree, proto_mac_mgmt_msg_dsd_decoder, tvb, offset, tlv_len, "Unknown TLV (%u byte(s))", tlv_len);
proto_tree_add_item(tlv_tree, hf_dsd_unknown_type, tvb, (offset - tlv_value_offset), (tlv_len + tlv_value_offset), FALSE);
break;
}
offset += tlv_len;
} /* end of while loop */
}
}
void dissect_mac_mgmt_msg_dsd_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
guint offset = 0;
guint tvb_len, payload_type, tlv_len, tlv_value_offset;
gint tlv_type;
proto_item *dsd_item = NULL;
proto_tree *dsd_tree = NULL;
proto_tree *tlv_tree = NULL;
tlv_info_t tlv_info;
if(tree)
{ /* we are being asked for details */
/* get the message type */
payload_type = tvb_get_guint8(tvb, offset);
/* ensure the message type is DSD REQ/RSP/ACK */
if(payload_type != MAC_MGMT_MSG_DSD_RSP)
return;
/* Get the tvb reported length */
tvb_len = tvb_reported_length(tvb);
/* display MAC message type */
dsd_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_dsd_decoder, tvb, offset, tvb_len, "%s (%u bytes)", dsd_msgs[payload_type - MAC_MGMT_MSG_DSD_REQ], tvb_len);
/* add MAC DSx subtree */
dsd_tree = proto_item_add_subtree(dsd_item, ett_mac_mgmt_msg_dsd_rsp_decoder);
/* Decode and display the DSD message */
/* display the Message Type */
proto_tree_add_item(dsd_tree, hf_dsd_rsp_message_type, tvb, offset, 1, FALSE);
/* move to next field */
offset++;
/* display the Transaction ID */
proto_tree_add_item(dsd_tree, hf_dsd_transaction_id, tvb, offset, 2, FALSE);
/* move to next field */
offset += 2;
/* display the Confirmation Code */
proto_tree_add_item(dsd_tree, hf_dsd_confirmation_code, tvb, offset, 1, FALSE);
/* move to next field */
offset++;
/* display the Service Flow ID */
proto_tree_add_item(dsd_tree, hf_dsd_service_flow_id, tvb, offset, 4, FALSE);
/* move to next field */
offset += 4;
/* process DSD RSP message TLV Encode Information */
while(offset < tvb_len)
{ /* get the TLV information */
init_tlv_info(&tlv_info, tvb, offset);
/* get the TLV type */
tlv_type = get_tlv_type(&tlv_info);
/* get the TLV length */
tlv_len = get_tlv_length(&tlv_info);
if(tlv_type == -1 || tlv_len > MAX_TLV_LEN || tlv_len < 1)
{ /* invalid tlv info */
if(pinfo->cinfo)
{
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "DSD RSP TLV error");
}
proto_tree_add_item(dsd_tree, hf_dsd_invalid_tlv, tvb, offset, (tvb_len - offset), FALSE);
break;
}
/* get the TLV value offset */
tlv_value_offset = get_tlv_value_offset(&tlv_info);
#ifdef DEBUG /* for debug only */
proto_tree_add_protocol_format(dsd_tree, proto_mac_mgmt_msg_dsd_decoder, tvb, offset, tlv_len + tlv_value_offset, "DSD-RSP TLV Type: %u (%u bytes, offset=%u, tvb_len=%u)", tlv_type, tlv_len + tlv_value_offset, offset, tvb_len);
#endif
/* update the offset */
offset += tlv_value_offset;
/* process TLV */
switch (tlv_type)
{
case HMAC_TUPLE: /* Table 348d */
/* decode and display the HMAC Tuple */
tlv_tree = add_protocol_subtree(&tlv_info, ett_mac_mgmt_msg_dsd_req_decoder, dsd_tree, proto_mac_mgmt_msg_dsd_decoder, tvb, offset, tlv_len, "HMAC Tuple (%u byte(s))", tlv_len);
wimax_hmac_tuple_decoder(tlv_tree, tvb, offset, tlv_len);
break;
case CMAC_TUPLE: /* Table 348b */
/* decode and display the CMAC Tuple */
tlv_tree = add_protocol_subtree(&tlv_info, ett_mac_mgmt_msg_dsd_req_decoder, dsd_tree, proto_mac_mgmt_msg_dsd_decoder, tvb, offset, tlv_len, "CMAC Tuple (%u byte(s))", tlv_len);
wimax_cmac_tuple_decoder(tlv_tree, tvb, offset, tlv_len);
break;
default:
/* display the unknown tlv in hex */
tlv_tree = add_protocol_subtree(&tlv_info, ett_mac_mgmt_msg_dsd_req_decoder, dsd_tree, proto_mac_mgmt_msg_dsd_decoder, tvb, offset, tlv_len, "Unknown TLV (%u byte(s))", tlv_len);
proto_tree_add_item(tlv_tree, hf_dsd_unknown_type, tvb, (offset - tlv_value_offset), (tlv_len + tlv_value_offset), FALSE);
break;
}
offset += tlv_len;
} /* end of while loop */
}
}
|
