/* msg_dsc.c * WiMax MAC Management DSC-REQ/RSP/ACK Messages decoder * * Copyright (c) 2007 by Intel Corporation. * * Author: Lu Pan * * Wireshark - Network traffic analyzer * By Gerald Combs * 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 #include "wimax_mac.h" #include "wimax_utils.h" void proto_register_mac_mgmt_msg_dsc(void); void proto_reg_handoff_mac_mgmt_msg_dsc(void); static gint proto_mac_mgmt_msg_dsc_decoder = -1; static gint ett_mac_mgmt_msg_dsc_req_decoder = -1; static gint ett_mac_mgmt_msg_dsc_rsp_decoder = -1; static gint ett_mac_mgmt_msg_dsc_ack_decoder = -1; /* fix fields */ static gint hf_dsc_transaction_id = -1; static gint hf_dsc_confirmation_code = -1; static int dissect_mac_mgmt_msg_dsc_req_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) { guint offset = 0; proto_item *dsc_item; proto_tree *dsc_tree; { /* we are being asked for details */ /* display MAC message type */ dsc_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_dsc_decoder, tvb, offset, -1, "Dynamic Service Change Request (DSC-REQ)"); /* add MAC DSx subtree */ dsc_tree = proto_item_add_subtree(dsc_item, ett_mac_mgmt_msg_dsc_req_decoder); /* Decode and display the Uplink Channel Descriptor (UCD) */ /* display the Transaction ID */ proto_tree_add_item(dsc_tree, hf_dsc_transaction_id, tvb, offset, 2, ENC_BIG_ENDIAN); /* move to next field */ offset += 2; /* process DSC REQ message TLV Encode Information */ wimax_common_tlv_encoding_decoder(tvb_new_subset_remaining(tvb, offset), pinfo, dsc_tree); } return tvb_captured_length(tvb); } static int dissect_mac_mgmt_msg_dsc_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) { guint offset = 0; proto_item *dsc_item; proto_tree *dsc_tree; { /* we are being asked for details */ /* display MAC message type */ dsc_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_dsc_decoder, tvb, offset, -1, "Dynamic Service Change Response (DSC-RSP)"); /* add MAC DSx subtree */ dsc_tree = proto_item_add_subtree(dsc_item, ett_mac_mgmt_msg_dsc_rsp_decoder); /* Decode and display the Uplink Channel Descriptor (UCD) */ /* display the Transaction ID */ proto_tree_add_item(dsc_tree, hf_dsc_transaction_id, tvb, offset, 2, ENC_BIG_ENDIAN); /* move to next field */ offset += 2; /* display the Confirmation Code */ proto_tree_add_item(dsc_tree, hf_dsc_confirmation_code, tvb, offset, 1, ENC_BIG_ENDIAN); /* move to next field */ offset++; /* process DSC RSP message TLV Encode Information */ wimax_common_tlv_encoding_decoder(tvb_new_subset_remaining(tvb, offset), pinfo, dsc_tree); } return tvb_captured_length(tvb); } static int dissect_mac_mgmt_msg_dsc_ack_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) { guint offset = 0; proto_item *dsc_item; proto_tree *dsc_tree; { /* we are being asked for details */ /* display MAC message type */ dsc_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_dsc_decoder, tvb, offset, -1, "Dynamic Service Change Acknowledge (DSC-ACK)"); /* add MAC DSx subtree */ dsc_tree = proto_item_add_subtree(dsc_item, ett_mac_mgmt_msg_dsc_ack_decoder); /* Decode and display the Uplink Channel Descriptor (UCD) */ /* display the Transaction ID */ proto_tree_add_item(dsc_tree, hf_dsc_transaction_id, tvb, offset, 2, ENC_BIG_ENDIAN); /* move to next field */ offset += 2; /* display the Confirmation Code */ proto_tree_add_item(dsc_tree, hf_dsc_confirmation_code, tvb, offset, 1, ENC_BIG_ENDIAN); /* move to next field */ offset++; /* process DSC ACK message TLV Encode Information */ wimax_common_tlv_encoding_decoder(tvb_new_subset_remaining(tvb, offset), pinfo, dsc_tree); } return tvb_captured_length(tvb); } /* Register Wimax Mac Payload Protocol and Dissector */ void proto_register_mac_mgmt_msg_dsc(void) { /* DSx display */ static hf_register_info hf[] = { { &hf_dsc_confirmation_code, { "Confirmation code", "wmx.dsc.confirmation_code", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL } }, { &hf_dsc_transaction_id, { "Transaction ID", "wmx.dsc.transaction_id", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } } }; /* Setup protocol subtree array */ static gint *ett[] = { &ett_mac_mgmt_msg_dsc_req_decoder, &ett_mac_mgmt_msg_dsc_rsp_decoder, &ett_mac_mgmt_msg_dsc_ack_decoder }; proto_mac_mgmt_msg_dsc_decoder = proto_register_protocol ( "WiMax DSC Messages", /* name */ "WiMax DSC", /* short name */ "wmx.dsc" /* abbrev */ ); proto_register_field_array(proto_mac_mgmt_msg_dsc_decoder, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); register_dissector("mac_mgmt_msg_dsc_rsp_handler", dissect_mac_mgmt_msg_dsc_rsp_decoder, -1); } void proto_reg_handoff_mac_mgmt_msg_dsc(void) { dissector_handle_t dsc_handle; dsc_handle = create_dissector_handle(dissect_mac_mgmt_msg_dsc_req_decoder, proto_mac_mgmt_msg_dsc_decoder); dissector_add_uint("wmx.mgmtmsg", MAC_MGMT_MSG_DSC_REQ, dsc_handle); dsc_handle = create_dissector_handle(dissect_mac_mgmt_msg_dsc_rsp_decoder, proto_mac_mgmt_msg_dsc_decoder); dissector_add_uint("wmx.mgmtmsg", MAC_MGMT_MSG_DSC_RSP, dsc_handle); dsc_handle = create_dissector_handle(dissect_mac_mgmt_msg_dsc_ack_decoder, proto_mac_mgmt_msg_dsc_decoder); dissector_add_uint("wmx.mgmtmsg", MAC_MGMT_MSG_DSC_ACK, dsc_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: */