diff options
Diffstat (limited to 'plugins/wimax/msg_reg_rsp.c')
| -rw-r--r-- | plugins/wimax/msg_reg_rsp.c | 380 |
1 files changed, 380 insertions, 0 deletions
diff --git a/plugins/wimax/msg_reg_rsp.c b/plugins/wimax/msg_reg_rsp.c new file mode 100644 index 0000000000..aad834ce46 --- /dev/null +++ b/plugins/wimax/msg_reg_rsp.c @@ -0,0 +1,380 @@ +/* msg_reg_rsp.c + * WiMax MAC Management REG-RSP Message decoder + * + * Copyright (c) 2007 by Intel Corporation. + * + * Author: John R. Underwood <junderx@yahoo.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 WIMAX_16E_2005 + +#define FRAG_LAST 0x1 + +#include "moduleinfo.h" + +#include <gmodule.h> +#include <epan/packet.h> +#include <epan/prefs.h> +#include "wimax_tlv.h" +#include "wimax_mac.h" +#include "wimax_utils.h" + +extern gint proto_mac_mgmt_msg_reg_req_decoder; +extern gboolean include_cor2_changes; + +extern gint man_ofdma; + +extern void dissect_extended_tlv(proto_tree *reg_req_tree, gint tlv_type, tvbuff_t *tvb, guint tlv_offset, guint tlv_len, packet_info *pinfo, guint offset, gint proto_registry); +extern void dissect_mac_mgmt_msg_dsc_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree); + +/* forward reference */ +void dissect_mac_mgmt_msg_reg_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree); + + +static gint proto_mac_mgmt_msg_reg_rsp_decoder = -1; +static gint ett_mac_mgmt_msg_reg_rsp_decoder = -1; +static gint ett_reg_rsp_message_tree = -1; + +/* Setup protocol subtree array */ +static gint *ett[] = +{ + &ett_mac_mgmt_msg_reg_rsp_decoder, + &ett_reg_rsp_message_tree +}; + +/* NCT messages */ + +/* REG-RSP fields */ +static gint hf_reg_rsp_message_type = -1; +static gint hf_reg_rsp_status = -1; +static gint hf_tlv_type = -1; +static gint hf_tlv_value = -1; +static gint hf_reg_rsp_secondary_mgmt_cid = -1; +static gint hf_reg_invalid_tlv = -1; +static gint hf_reg_rsp_new_cid_after_ho = -1; +static gint hf_reg_rsp_service_flow_id = -1; +static gint hf_reg_rsp_system_resource_retain_time = -1; + +/* STRING RESOURCES */ + +static const value_string vals_reg_rsp_status [] = { + {0, "OK"}, + {1, "Message authentication failure"}, + {0, NULL} +}; + + +/* REG-RSP fields display */ +static hf_register_info hf[] = +{ + { + &hf_reg_rsp_message_type, + { + "MAC Management Message Type", "wimax.macmgtmsgtype.reg_rsp", + FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_reg_invalid_tlv, + { + "Invalid TLV", "wimax.reg_rsp.invalid_tlv", + FT_BYTES, BASE_HEX, NULL, 0, "", HFILL + } + }, + { + &hf_reg_rsp_new_cid_after_ho, + { + "New CID after handover to new BS", "wimax.reg_rsp.new_cid_after_ho", + FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_reg_rsp_status, + { + "Response", "wimax.reg_rsp.response", + FT_UINT8, BASE_HEX, VALS(vals_reg_rsp_status), 0x0, "", HFILL + } + }, + { + &hf_reg_rsp_secondary_mgmt_cid, + { + "Secondary Management CID", "wimax.reg_rsp.secondary_mgmt_cid", + FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_reg_rsp_service_flow_id, + { + "Service flow ID", "wimax.reg_rsp.service_flow_id", + FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_reg_rsp_system_resource_retain_time, + { + "System Resource Retain Time", "wimax.reg_rsp.system_resource_retain_time", + FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_tlv_type, + { + "Unknown TLV Type", "wimax.reg_rsp.unknown_tlv_type", + FT_BYTES, BASE_NONE, NULL, 0x00, "", HFILL + } + }, + { + &hf_tlv_value, + { + "Value", "wimax.reg_rsp.tlv_value", + FT_BYTES, BASE_NONE, NULL, 0x00, "", HFILL + } + } +}; + +/* Register Wimax Mac Payload Protocol and Dissector */ +void proto_register_mac_mgmt_msg_reg_rsp(void) +{ + if (proto_mac_mgmt_msg_reg_rsp_decoder == -1) + { + proto_mac_mgmt_msg_reg_rsp_decoder = proto_mac_mgmt_msg_reg_req_decoder; + + proto_register_field_array(proto_mac_mgmt_msg_reg_rsp_decoder, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + } +} + +/* Decode REG-RSP messages. */ +void dissect_mac_mgmt_msg_reg_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + guint offset = 0; + guint tlv_offset; + guint tvb_len, payload_type; + proto_item *reg_rsp_item = NULL; + proto_tree *reg_rsp_tree = NULL; + proto_item *tlv_item = NULL; + proto_tree *tlv_tree = NULL; + proto_tree *sub_tree = NULL; + gboolean hmac_found = FALSE; + tlv_info_t tlv_info; + gint tlv_type; + guint tlv_len; + guint this_offset = 0; + tlv_info_t sub_tlv_info; + gint sub_tlv_type; + gint sub_tlv_len; + guint sub_tlv_offset; + + /* Ensure the right payload type */ + payload_type = tvb_get_guint8(tvb, offset); + if (payload_type != MAC_MGMT_MSG_REG_RSP) + { + return; + } + + if (tree) + { /* we are being asked for details */ + + /* Get the tvb length */ + tvb_len = tvb_length(tvb); + /* display MAC payload type REG-RSP */ + reg_rsp_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_reg_rsp_decoder, tvb, offset, tvb_len, "MAC Management Message, REG-RSP (7)"); + /* add MAC REG-RSP subtree */ + reg_rsp_tree = proto_item_add_subtree(reg_rsp_item, ett_mac_mgmt_msg_reg_rsp_decoder); + /* display the Message Type */ + proto_tree_add_item(reg_rsp_tree, hf_reg_rsp_message_type, tvb, offset, 1, FALSE); + proto_tree_add_item(reg_rsp_tree, hf_reg_rsp_status, tvb, offset + 1, 1, FALSE); + offset += 2; + + while (offset < tvb_len) + { + /* Get the TLV data. */ + 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, "REG-RSP TLV error"); + } + proto_tree_add_item(reg_rsp_tree, hf_reg_invalid_tlv, tvb, offset, (tvb_len - offset), FALSE); + break; + } + /* get the offset to the TLV data */ + tlv_offset = offset + get_tlv_value_offset(&tlv_info); + + switch (tlv_type) { + case REG_ARQ_PARAMETERS: + case REG_SS_MGMT_SUPPORT: + case REG_IP_MGMT_MODE: + case REG_IP_VERSION: + case REG_UL_TRANSPORT_CIDS_SUPPORTED: + case REG_IP_PHS_SDU_ENCAP: + case REG_MAX_CLASSIFIERS_SUPPORTED: + case REG_PHS_SUPPORT: + case REG_ARQ_SUPPORT: + case REG_DSX_FLOW_CONTROL: + case REG_MCA_FLOW_CONTROL: + case REG_MCAST_POLLING_CIDS: + case REG_NUM_DL_TRANS_CID: + case REG_MAC_ADDRESS: +#ifdef WIMAX_16E_2005 + case REG_TLV_T_20_MAX_MAC_DATA_PER_FRAME_SUPPORT: + case REG_TLV_T_21_PACKING_SUPPORT: + case REG_TLV_T_22_MAC_EXTENDED_RTPS_SUPPORT: + case REG_TLV_T_23_MAX_NUM_BURSTS_TRANSMITTED_CONCURRENTLY_TO_THE_MS: + case REG_TLV_T_26_METHOD_FOR_ALLOCATING_IP_ADDR_SECONDARY_MGMNT_CONNECTION: + case REG_TLV_T_27_HANDOVER_SUPPORTED: + case REG_TLV_T_29_HO_PROCESS_OPTIMIZATION_MS_TIMER: + case REG_TLV_T_31_MOBILITY_FEATURES_SUPPORTED: + case REG_TLV_T_40_ARQ_ACK_TYPE: + case REG_TLV_T_41_MS_HO_CONNECTIONS_PARAM_PROCESSING_TIME: + case REG_TLV_T_42_MS_HO_TEK_PROCESSING_TIME: + case REG_TLV_T_43_MAC_HEADER_AND_EXTENDED_SUBHEADER_SUPPORT: + dissect_extended_tlv(reg_rsp_tree, tlv_type, tvb, tlv_offset, tlv_len, pinfo, offset, proto_mac_mgmt_msg_reg_rsp_decoder); + break; +#endif + case REG_RSP_SECONDARY_MGMT_CID: + tlv_tree = add_tlv_subtree(&tlv_info, ett_reg_rsp_message_tree, reg_rsp_tree, hf_reg_rsp_secondary_mgmt_cid, tvb, tlv_offset, tlv_len, FALSE); + proto_tree_add_item(tlv_tree, hf_reg_rsp_secondary_mgmt_cid, tvb, tlv_offset, tlv_len, FALSE); + break; + + case REG_RSP_TLV_T_24_CID_UPDATE_ENCODINGS: + /* Display CID update encodings */ + /* add subtree */ + sub_tree = add_protocol_subtree(&tlv_info, ett_reg_rsp_message_tree, reg_rsp_tree, proto_mac_mgmt_msg_reg_rsp_decoder, tvb, tlv_offset, tlv_len, "CID update encodings (%u byte(s))", tlv_len); + /* Use a local copy of tlv_offset */ + this_offset = tlv_offset; + while(this_offset < tlv_len) { + /* Get the sub TLV data. */ + init_tlv_info(&sub_tlv_info, tvb, this_offset); + /* get the sub TLV type */ + sub_tlv_type = get_tlv_type(&sub_tlv_info); + /* get the TLV length */ + sub_tlv_len = get_tlv_length(&sub_tlv_info); + if (tlv_type == -1 || sub_tlv_len > MAX_TLV_LEN || sub_tlv_len < 1) + { /* invalid tlv info */ + if (pinfo->cinfo) + { + col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "REG-RSP TLV error"); + } + proto_tree_add_item(reg_rsp_tree, hf_reg_invalid_tlv, tvb, offset, (tvb_len - offset), FALSE); + break; + } + /* get the offset to the sub TLV data */ + sub_tlv_offset = this_offset + get_tlv_value_offset(&sub_tlv_info); + switch (sub_tlv_type) { + case REG_RSP_TLV_T_24_1_CID_UPDATE_ENCODINGS_NEW_CID: + tlv_tree = add_tlv_subtree(&sub_tlv_info, ett_reg_rsp_message_tree, sub_tree, hf_reg_rsp_new_cid_after_ho, tvb, sub_tlv_offset, sub_tlv_len, FALSE); + proto_tree_add_item(tlv_tree, hf_reg_rsp_new_cid_after_ho, tvb, sub_tlv_offset, sub_tlv_len, FALSE); + break; + case REG_RSP_TLV_T_24_2_CID_UPDATE_ENCODINGS_SFID: + tlv_tree = add_tlv_subtree(&sub_tlv_info, ett_reg_rsp_message_tree, sub_tree, hf_reg_rsp_service_flow_id, tvb, sub_tlv_offset, sub_tlv_len, FALSE); + proto_tree_add_item(tlv_tree, hf_reg_rsp_service_flow_id, tvb, sub_tlv_offset, sub_tlv_len, FALSE); + break; + case REG_RSP_TLV_T_24_3_CID_UPDATE_ENCODINGS_CONNECTION_INFO: + tlv_tree = add_protocol_subtree(&sub_tlv_info, ett_reg_rsp_message_tree, sub_tree, proto_mac_mgmt_msg_reg_rsp_decoder, tvb, sub_tlv_offset, sub_tlv_len, "CID Update Encodings Connection Info (%u byte(s))", tlv_len); + /* Decode the DSC_RSP subTLV's */ + dissect_mac_mgmt_msg_dsc_rsp_decoder(tvb_new_subset(tvb, sub_tlv_offset, sub_tlv_len, sub_tlv_len), pinfo, tlv_tree); + break; + default: + tlv_tree = add_tlv_subtree(&sub_tlv_info, ett_reg_rsp_message_tree, sub_tree, hf_tlv_type, tvb, sub_tlv_offset, sub_tlv_len, FALSE); + proto_tree_add_item(tlv_tree, hf_tlv_type, tvb, sub_tlv_offset, sub_tlv_len, FALSE); + break; + } + this_offset = sub_tlv_len + sub_tlv_offset; + } + break; + case REG_RSP_TLV_T_28_HO_SYSTEM_RESOURCE_RETAIN_TIME: + tlv_tree = add_protocol_subtree(&tlv_info, ett_mac_mgmt_msg_reg_rsp_decoder, reg_rsp_tree, proto_mac_mgmt_msg_reg_rsp_decoder, tvb, tlv_offset, tlv_len, "System Resource Retain Time (%u byte(s))", tlv_len); + tlv_item = proto_tree_add_item(tlv_tree, hf_reg_rsp_system_resource_retain_time, tvb, tlv_offset, tlv_len, FALSE); + if (include_cor2_changes) { + proto_item_append_text(tlv_item, " (in units of 100 milliseconds)"); + } else { + proto_item_append_text(tlv_item, " (multiple of 100 milliseconds)"); + } + case DSx_UPLINK_FLOW: + /* display Uplink Service Flow Encodings info */ + /* add subtree */ + tlv_tree = add_protocol_subtree(&tlv_info, ett_mac_mgmt_msg_reg_rsp_decoder, reg_rsp_tree, proto_mac_mgmt_msg_reg_rsp_decoder, tvb, tlv_offset, tlv_len, "Uplink Service Flow Encodings (%u byte(s))", tlv_len); + /* decode and display the DL Service Flow Encodings */ + wimax_service_flow_encodings_decoder(tvb_new_subset(tvb, tlv_offset, tlv_len, tlv_len), pinfo, tlv_tree); + break; + case DSx_DOWNLINK_FLOW: + /* display Downlink Service Flow Encodings info */ + /* add subtree */ + tlv_tree = add_protocol_subtree(&tlv_info, ett_mac_mgmt_msg_reg_rsp_decoder, reg_rsp_tree, proto_mac_mgmt_msg_reg_rsp_decoder, tvb, tlv_offset, tlv_len, "Downlink Service Flow Encodings (%u byte(s))", tlv_len); + /* decode and display the DL Service Flow Encodings */ + wimax_service_flow_encodings_decoder(tvb_new_subset(tvb, tlv_offset, tlv_len, tlv_len), pinfo, tlv_tree); + break; + case HMAC_TUPLE: /* Table 348d */ + /* decode and display the HMAC Tuple */ + tlv_tree = add_protocol_subtree(&tlv_info, ett_mac_mgmt_msg_reg_rsp_decoder, reg_rsp_tree, proto_mac_mgmt_msg_reg_rsp_decoder, tvb, tlv_offset, tlv_len, "HMAC Tuple (%u byte(s))", tlv_len); + wimax_hmac_tuple_decoder(tlv_tree, tvb, offset+2, tlv_len); + hmac_found = TRUE; + break; + case CMAC_TUPLE: /* Table 348b */ + /* decode and display the CMAC Tuple */ + tlv_tree = add_protocol_subtree(&tlv_info, ett_mac_mgmt_msg_reg_rsp_decoder, reg_rsp_tree, proto_mac_mgmt_msg_reg_rsp_decoder, tvb, tlv_offset, tlv_len, "CMAC Tuple (%u byte(s))", tlv_len); + wimax_cmac_tuple_decoder(tlv_tree, tvb, offset+2, tlv_len); + break; + case SHORT_HMAC_TUPLE: + case SHORT_HMAC_TUPLE_COR2: + if ((!include_cor2_changes && (tlv_type == SHORT_HMAC_TUPLE)) || + (include_cor2_changes && (tlv_type == SHORT_HMAC_TUPLE_COR2))) { + /* decode and display the Short HMAC Tuple */ + tlv_tree = add_protocol_subtree(&tlv_info, ett_mac_mgmt_msg_reg_rsp_decoder, reg_rsp_tree, proto_mac_mgmt_msg_reg_rsp_decoder, tvb, tlv_offset, tlv_len, "Short HMAC Tuple (%u byte(s))", tlv_len); + wimax_short_hmac_tuple_decoder(tlv_tree, tvb, tlv_offset, tlv_len); + } else { + /* Unknown TLV Type */ + tlv_tree = add_tlv_subtree(&tlv_info, ett_reg_rsp_message_tree, reg_rsp_tree, hf_tlv_type, tvb, tlv_offset, tlv_len, FALSE); + proto_tree_add_item(tlv_tree, hf_tlv_type, tvb, tlv_offset, tlv_len, FALSE); + } + break; + case VENDOR_SPECIFIC_INFO: + case VENDOR_ID_ENCODING: + case MAC_VERSION_ENCODING: + wimax_common_tlv_encoding_decoder(tvb_new_subset(tvb, offset, (tvb_len - offset), (tvb_len - offset)), pinfo, reg_rsp_tree); + break; + default: + tlv_tree = add_tlv_subtree(&tlv_info, ett_reg_rsp_message_tree, reg_rsp_tree, hf_tlv_type, tvb, tlv_offset, tlv_len, FALSE); + proto_tree_add_item(tlv_tree, hf_tlv_type, tvb, tlv_offset, tlv_len, FALSE); + break; + } + + offset = tlv_len + tlv_offset; + } /* end of TLV process while loop */ + if (!hmac_found) + proto_item_append_text(reg_rsp_tree, " (HMAC Tuple is missing !)"); + } +} + |