diff options
Diffstat (limited to 'plugins/wimax/msg_pmc.c')
-rw-r--r-- | plugins/wimax/msg_pmc.c | 294 |
1 files changed, 294 insertions, 0 deletions
diff --git a/plugins/wimax/msg_pmc.c b/plugins/wimax/msg_pmc.c new file mode 100644 index 0000000000..ffc3f8fd50 --- /dev/null +++ b/plugins/wimax/msg_pmc.c @@ -0,0 +1,294 @@ +/* msg_pmc.c + * WiMax MAC Management PMC-REQ, PMC-RSP Message decoders + * + * 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 + +#include "moduleinfo.h" + +#include <gmodule.h> +#include <epan/packet.h> +#include <epan/prefs.h> +#include "crc.h" +#include "wimax_tlv.h" +#include "wimax_mac.h" +#include "wimax_utils.h" + +extern gint man_ofdma; +extern gboolean include_cor2_changes; + +/* Forward reference */ +void dissect_mac_mgmt_msg_pmc_req_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree); +void dissect_mac_mgmt_msg_pmc_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree); + +static gint proto_mac_mgmt_msg_pmc_req_decoder = -1; +static gint proto_mac_mgmt_msg_pmc_rsp_decoder = -1; + +static gint ett_mac_mgmt_msg_pmc_decoder = -1; + +/* Setup protocol subtree array */ +static gint *ett[] = +{ + &ett_mac_mgmt_msg_pmc_decoder, +}; + +/* PMC fields */ +static gint hf_pmc_req_message_type = -1; +static gint hf_pmc_rsp_message_type = -1; +static gint hf_pmc_req_pwr_control_mode_change = -1; +static gint hf_pmc_req_pwr_control_mode_change_cor2 = -1; +static gint hf_pmc_req_tx_power_level = -1; +static gint hf_pmc_req_confirmation = -1; +static gint hf_pmc_req_reserved = -1; +static gint hf_pmc_rsp_start_frame = -1; +static gint hf_pmc_rsp_power_adjust = -1; +static gint hf_pmc_rsp_offset_BS_per_MS = -1; + +/* STRING RESOURCES */ +static const value_string vals_pmc_req_pwr[] = { + {0, "Closed loop power control mode"}, + {1, "Reserved"}, + {2, "Open loop power control passive mode"}, + {3, "Open loop power control active mode"}, + {0, NULL} +}; + +static const value_string vals_pmc_req_pwr_cor2[] = { + {0, "Closed loop power control mode"}, + {1, "Open loop power control passive mode with Offset_SSperSS retention"}, + {2, "Open loop power control passive mode with Offset_SSperSS reset"}, + {3, "Open loop power control active mode"}, + {0, NULL} +}; + +static const value_string vals_pmc_req_confirmation[] = { + {0, "MS requests to change the power control mode"}, + {1, "MS confirms the receipt of PMC_RSP from BS"}, + {0, NULL} +}; + +/* PMC fields display */ +static hf_register_info hf[] = +{ + { + &hf_pmc_req_message_type, + { + "MAC Management Message Type", "wimax.macmgtmsgtype.pmc_req", + FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_pmc_req_confirmation, + { + "Confirmation", "wimax.pmc_req.confirmation", + FT_UINT16, BASE_DEC, VALS(vals_pmc_req_confirmation), 0x0020, "", HFILL + } + }, + { + &hf_pmc_req_pwr_control_mode_change, + { + "Power control mode change", "wimax.pmc_req.power_control_mode", + FT_UINT16, BASE_DEC, VALS(vals_pmc_req_pwr), 0xC000, "", HFILL + } + }, + { + &hf_pmc_req_pwr_control_mode_change_cor2, + { + "Power control mode change", "wimax.pmc_req.power_control_mode", + FT_UINT16, BASE_DEC, VALS(vals_pmc_req_pwr_cor2), 0xC000, "", HFILL + } + }, + { + &hf_pmc_req_reserved, + { + "Reserved", "wimax.pmc_req.reserved", + FT_UINT16, BASE_DEC, NULL, 0x001F, "", HFILL + } + }, + { + &hf_pmc_req_tx_power_level, + { + "UL Tx power level for the burst that carries this header (11.1.1). When the Tx power is different from slot to slot, the maximum value is reported", "wimax.pmc_req.ul_tx_power_level", + FT_UINT16, BASE_DEC, NULL, 0x3FC0, "", HFILL + } + }, + { + &hf_pmc_rsp_message_type, + { + "MAC Management Message Type", "wimax.macmgtmsgtype.pmc_rsp", + FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_pmc_rsp_offset_BS_per_MS, + { + "Offset_BS per MS. Signed change in power level (incr of 0.25 dB) that the MS shall apply to the open loop power control formula in 8.4.10.3.2", "wimax.pmc_rsp.offset_BS_per_MS", + FT_FLOAT, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_pmc_rsp_power_adjust, + { + "Power adjust. Signed change in power level (incr of 0.25 dB) the MS shall apply to its current transmission power. When subchannelization is employed, the SS shall interpret as a required change to the Tx power density", "wimax.pmc_rsp.power_adjust", + FT_FLOAT, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_pmc_rsp_start_frame, + { + "Start frame. Apply mode change from current frame when 6 LSBs of frame match this", "wimax.pmc_rsp.start_frame", + FT_UINT16, BASE_HEX, NULL, 0x3F00, "", HFILL + } + } +}; + + +/* Register Wimax Mac Payload Protocol and Dissector */ +void proto_register_mac_mgmt_msg_pmc_req(void) +{ + if (proto_mac_mgmt_msg_pmc_req_decoder == -1) { + proto_mac_mgmt_msg_pmc_req_decoder = proto_register_protocol ( + "WiMax PMC-REQ/RSP Messages", /* name */ + "WiMax PMC-REQ/RSP (pmc)", /* short name */ + "pmc" /* abbrev */ + ); + + proto_register_field_array(proto_mac_mgmt_msg_pmc_req_decoder, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + } +} + +/* Register Wimax Mac Payload Protocol and Dissector */ +void proto_register_mac_mgmt_msg_pmc_rsp(void) +{ + if (proto_mac_mgmt_msg_pmc_rsp_decoder == -1) { + proto_mac_mgmt_msg_pmc_rsp_decoder = proto_mac_mgmt_msg_pmc_req_decoder; + + proto_register_subtree_array(ett, array_length(ett)); + } +} + +/* Decode PMC-REQ messages. */ +void dissect_mac_mgmt_msg_pmc_req_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + guint offset = 0; + guint tvb_len, payload_type; + proto_item *pmc_req_item = NULL; + proto_tree *pmc_req_tree = NULL; + + UNREFERENCED_PARAMETER(pinfo); + + /* Ensure the right payload type */ + payload_type = tvb_get_guint8(tvb, 0); + if(payload_type != MAC_MGMT_MSG_PMC_REQ) + { + return; + } + + if (tree) + { /* we are being asked for details */ + + /* Get the tvb length */ + tvb_len = tvb_length(tvb); + /* display MAC payload type PMC-REQ */ + pmc_req_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_pmc_req_decoder, tvb, 0, tvb_len, "MAC Management Message, PMC-REQ (63)"); + /* add MAC PMC REQ subtree */ + pmc_req_tree = proto_item_add_subtree(pmc_req_item, ett_mac_mgmt_msg_pmc_decoder); + /* display the Message Type */ + proto_tree_add_item(pmc_req_tree, hf_pmc_req_message_type, tvb, offset, 1, FALSE); + offset++; + /* display the Power Control Mode Change */ + proto_tree_add_item(pmc_req_tree, hf_pmc_req_pwr_control_mode_change, tvb, offset, 2, FALSE); + /* show the Transmit Power Level */ + proto_tree_add_item(pmc_req_tree, hf_pmc_req_tx_power_level, tvb, offset, 2, FALSE); + /* display the Confirmation/request */ + proto_tree_add_item(pmc_req_tree, hf_pmc_req_confirmation, tvb, offset, 2, FALSE); + /* show the Reserved bits */ + proto_tree_add_item(pmc_req_tree, hf_pmc_req_reserved, tvb, offset, 2, FALSE); + } +} + +/* Decode PMC-RSP messages. */ +void dissect_mac_mgmt_msg_pmc_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + guint offset = 0; + guint tvb_len, payload_type; + proto_item *pmc_rsp_item = NULL; + proto_tree *pmc_rsp_tree = NULL; + guint8 pwr_control_mode; + gint8 value; + gfloat power_change; + + UNREFERENCED_PARAMETER(pinfo); + + /* Ensure the right payload type */ + payload_type = tvb_get_guint8(tvb, 0); + if(payload_type != MAC_MGMT_MSG_PMC_RSP) + { + return; + } + + if (tree) + { /* we are being asked for details */ + + /* Get the tvb length */ + tvb_len = tvb_length(tvb); + /* display MAC payload type PMC-RSP */ + pmc_rsp_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_pmc_rsp_decoder, tvb, 0, tvb_len, "MAC Management Message, PMC-RSP (64)"); + /* add MAC PMC RSP subtree */ + pmc_rsp_tree = proto_item_add_subtree(pmc_rsp_item, ett_mac_mgmt_msg_pmc_decoder); + /* display the Message Type */ + proto_tree_add_item(pmc_rsp_tree, hf_pmc_rsp_message_type, tvb, offset, 1, FALSE); + offset ++; + + /* display the Power Control Mode Change */ + if (include_cor2_changes) + proto_tree_add_item(pmc_rsp_tree, hf_pmc_req_pwr_control_mode_change_cor2, tvb, offset, 2, FALSE); + else + proto_tree_add_item(pmc_rsp_tree, hf_pmc_req_pwr_control_mode_change, tvb, offset, 2, FALSE); + /* display the Power Adjust start frame */ + proto_tree_add_item(pmc_rsp_tree, hf_pmc_rsp_start_frame, tvb, offset, 2, FALSE); + pwr_control_mode = 0xC0 & tvb_get_guint8(tvb, offset); + offset++; + + value = (gint8)tvb_get_guint8(tvb, offset); + power_change = (float)0.25 * value; /* 0.25dB incr */ + /* Check if Power Control Mode is 0 */ + if (pwr_control_mode == 0) { + /* display the amount of power change requested */ + proto_tree_add_float_format_value(pmc_rsp_tree, hf_pmc_rsp_power_adjust, tvb, offset, 1, power_change, " %.2f dB", power_change); + } else { + /* display the amount of MS power change requested */ + proto_tree_add_float_format_value(pmc_rsp_tree, hf_pmc_rsp_offset_BS_per_MS, tvb, offset, 1, power_change, " %.2f dB", power_change); + } + } +} + |