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/* msg_dsa.c
* WiMax MAC Management DSA-REQ/RSP/ACK Messages 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
*
* 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 files */
#include "config.h"
/*
#define DEBUG
*/
#include <epan/packet.h>
#include "wimax_mac.h"
#include "wimax_utils.h"
void proto_register_mac_mgmt_msg_dsa(void);
void proto_reg_handoff_mac_mgmt_msg_dsa(void);
static gint proto_mac_mgmt_msg_dsa_decoder = -1;
static gint ett_mac_mgmt_msg_dsa_req_decoder = -1;
static gint ett_mac_mgmt_msg_dsa_rsp_decoder = -1;
static gint ett_mac_mgmt_msg_dsa_ack_decoder = -1;
/* fix fields */
static gint hf_dsa_transaction_id = -1;
static gint hf_dsa_confirmation_code = -1;
static int dissect_mac_mgmt_msg_dsa_req_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
guint offset = 0;
proto_item *dsa_item;
proto_tree *dsa_tree;
{ /* we are being asked for details */
/* display MAC message type */
dsa_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_dsa_decoder, tvb, offset, -1,
"Dynamic Service Addition Request (DSA-REQ)");
/* add MAC DSx subtree */
dsa_tree = proto_item_add_subtree(dsa_item, ett_mac_mgmt_msg_dsa_req_decoder);
/* Decode and display the Uplink Channel Descriptor (UCD) */
/* display the Transaction ID */
proto_tree_add_item(dsa_tree, hf_dsa_transaction_id, tvb, offset, 2, ENC_BIG_ENDIAN);
/* move to next field */
offset += 2;
/* process DSA-REQ message TLV Encode Information */
wimax_common_tlv_encoding_decoder(tvb_new_subset_remaining(tvb, offset), pinfo, dsa_tree);
}
return tvb_captured_length(tvb);
}
static int dissect_mac_mgmt_msg_dsa_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
guint offset = 0;
proto_item *dsa_item;
proto_tree *dsa_tree;
{ /* we are being asked for details */
/* display MAC message type */
dsa_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_dsa_decoder, tvb, offset, -1,
"Dynamic Service Addition Response (DSA-RSP)");
/* add MAC DSx subtree */
dsa_tree = proto_item_add_subtree(dsa_item, ett_mac_mgmt_msg_dsa_rsp_decoder);
/* Decode and display the Uplink Channel Descriptor (UCD) */
/* display the Transaction ID */
proto_tree_add_item(dsa_tree, hf_dsa_transaction_id, tvb, offset, 2, ENC_BIG_ENDIAN);
/* move to next field */
offset += 2;
/* display the Confirmation Code */
proto_tree_add_item(dsa_tree, hf_dsa_confirmation_code, tvb, offset, 1, ENC_BIG_ENDIAN);
/* move to next field */
offset++;
/* process DSA RSP message TLV Encode Information */
wimax_common_tlv_encoding_decoder(tvb_new_subset_remaining(tvb, offset), pinfo, dsa_tree);
}
return tvb_captured_length(tvb);
}
static int dissect_mac_mgmt_msg_dsa_ack_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
guint offset = 0;
proto_item *dsa_item;
proto_tree *dsa_tree;
{ /* we are being asked for details */
/* display MAC message type */
dsa_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_dsa_decoder, tvb, offset, -1,
"Dynamic Service Addition Acknowledge (DSA-ACK)");
/* add MAC DSx subtree */
dsa_tree = proto_item_add_subtree(dsa_item, ett_mac_mgmt_msg_dsa_ack_decoder);
/* Decode and display the Uplink Channel Descriptor (UCD) */
/* display the Transaction ID */
proto_tree_add_item(dsa_tree, hf_dsa_transaction_id, tvb, offset, 2, ENC_BIG_ENDIAN);
/* move to next field */
offset += 2;
/* display the Confirmation Code */
proto_tree_add_item(dsa_tree, hf_dsa_confirmation_code, tvb, offset, 1, ENC_BIG_ENDIAN);
/* move to next field */
offset++;
/* process DSA-REQ message TLV Encode Information */
wimax_common_tlv_encoding_decoder(tvb_new_subset_remaining(tvb, offset), pinfo, dsa_tree);
}
return tvb_captured_length(tvb);
}
/* Register Wimax Mac Payload Protocol and Dissector */
void proto_register_mac_mgmt_msg_dsa(void)
{
/* DSx display */
static hf_register_info hf[] =
{
{
&hf_dsa_confirmation_code,
{
"Confirmation code", "wmx.dsa.confirmation_code",
FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL
}
},
{
&hf_dsa_transaction_id,
{
"Transaction ID", "wmx.dsa.transaction_id",
FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL
}
}
};
/* Setup protocol subtree array */
static gint *ett[] =
{
&ett_mac_mgmt_msg_dsa_req_decoder,
&ett_mac_mgmt_msg_dsa_rsp_decoder,
&ett_mac_mgmt_msg_dsa_ack_decoder,
};
proto_mac_mgmt_msg_dsa_decoder = proto_register_protocol (
"WiMax DSA Messages", /* name */
"WiMax DSA", /* short name */
"wmx.dsa" /* abbrev */
);
proto_register_field_array(proto_mac_mgmt_msg_dsa_decoder, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_mac_mgmt_msg_dsa (void)
{
dissector_handle_t dsa_handle;
dsa_handle = create_dissector_handle(dissect_mac_mgmt_msg_dsa_req_decoder, proto_mac_mgmt_msg_dsa_decoder);
dissector_add_uint("wmx.mgmtmsg", MAC_MGMT_MSG_DSA_REQ, dsa_handle);
dsa_handle = create_dissector_handle(dissect_mac_mgmt_msg_dsa_rsp_decoder, proto_mac_mgmt_msg_dsa_decoder);
dissector_add_uint("wmx.mgmtmsg", MAC_MGMT_MSG_DSA_RSP, dsa_handle);
dsa_handle = create_dissector_handle(dissect_mac_mgmt_msg_dsa_ack_decoder, proto_mac_mgmt_msg_dsa_decoder);
dissector_add_uint("wmx.mgmtmsg", MAC_MGMT_MSG_DSA_ACK, dsa_handle);
}
/*
* Editor modelines - http://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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