diff options
Diffstat (limited to 'plugins/epan/wimax/msg_pmc.c')
| -rw-r--r-- | plugins/epan/wimax/msg_pmc.c | 258 |
1 files changed, 258 insertions, 0 deletions
diff --git a/plugins/epan/wimax/msg_pmc.c b/plugins/epan/wimax/msg_pmc.c new file mode 100644 index 0000000000..5ec213576e --- /dev/null +++ b/plugins/epan/wimax/msg_pmc.c @@ -0,0 +1,258 @@ +/* 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> + * + * 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" + + +#include <epan/packet.h> +#include "wimax_mac.h" + +extern gboolean include_cor2_changes; + +void proto_register_mac_mgmt_msg_pmc_req(void); +void proto_register_mac_mgmt_msg_pmc_rsp(void); +void proto_reg_handoff_mac_mgmt_msg_pmc(void); + +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_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} +}; + +/* Register Wimax Mac Payload Protocol and Dissector */ +void proto_register_mac_mgmt_msg_pmc_req(void) +{ + /* PMC fields display */ + static hf_register_info hf[] = + { + { + &hf_pmc_req_confirmation, + { + "Confirmation", "wmx.pmc_req.confirmation", + FT_UINT16, BASE_DEC, VALS(vals_pmc_req_confirmation), 0x0020, NULL, HFILL + } + }, + { + &hf_pmc_req_pwr_control_mode_change, + { + "Power control mode change", "wmx.pmc_req.power_control_mode", + FT_UINT16, BASE_DEC, VALS(vals_pmc_req_pwr), 0xC000, NULL, HFILL + } + }, + { + &hf_pmc_req_pwr_control_mode_change_cor2, + { + "Power control mode change", "wmx.pmc_req.power_control_mode", + FT_UINT16, BASE_DEC, VALS(vals_pmc_req_pwr_cor2), 0xC000, NULL, HFILL + } + }, + { + &hf_pmc_req_reserved, + { + "Reserved", "wmx.pmc_req.reserved", + FT_UINT16, BASE_DEC, NULL, 0x001F, NULL, HFILL + } + }, + { + &hf_pmc_req_tx_power_level, + { + "UL Tx power level for the burst that carries this header", "wmx.pmc_req.ul_tx_power_level", + FT_UINT16, BASE_DEC, NULL, 0x3FC0, "When the Tx power is different from slot to slot, the maximum value is reported", HFILL + } + }, + { + &hf_pmc_rsp_offset_BS_per_MS, + { + "Offset_BS per MS", "wmx.pmc_rsp.offset_BS_per_MS", + FT_FLOAT, BASE_NONE, NULL, 0x0, "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", HFILL + } + }, + { + &hf_pmc_rsp_power_adjust, + { + "Power adjust", "wmx.pmc_rsp.power_adjust", + FT_FLOAT, BASE_NONE, NULL, 0x0, "Signed change in power level (incr of 0.25 dB) that 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", HFILL + } + }, + { + &hf_pmc_rsp_start_frame, + { + "Start frame", "wmx.pmc_rsp.start_frame", + FT_UINT16, BASE_HEX, NULL, 0x3F00, "Apply mode change from current frame when 6 LSBs of frame match this", HFILL + } + } + }; + + proto_mac_mgmt_msg_pmc_req_decoder = proto_register_protocol ( + "WiMax PMC-REQ Messages", /* name */ + "WiMax PMC-REQ", /* short name */ + "wmx.pmc_req" /* 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) +{ + proto_mac_mgmt_msg_pmc_rsp_decoder = proto_register_protocol ( + "WiMax PMC-RSP Messages", /* name */ + "WiMax PMC-RSP", /* short name */ + "wmx.pmc_rsp" /* abbrev */ + ); +} + +/* Decode PMC-REQ messages. */ +static int dissect_mac_mgmt_msg_pmc_req_decoder(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, void* data _U_) +{ + guint offset = 0; + proto_item *pmc_req_item; + proto_tree *pmc_req_tree; + + { /* we are being asked for details */ + + /* display MAC payload type PMC-REQ */ + pmc_req_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_pmc_req_decoder, tvb, 0, -1, "MAC Management Message, PMC-REQ"); + /* add MAC PMC REQ subtree */ + pmc_req_tree = proto_item_add_subtree(pmc_req_item, ett_mac_mgmt_msg_pmc_decoder); + /* display the Power Control Mode Change */ + proto_tree_add_item(pmc_req_tree, hf_pmc_req_pwr_control_mode_change, tvb, offset, 2, ENC_BIG_ENDIAN); + /* show the Transmit Power Level */ + proto_tree_add_item(pmc_req_tree, hf_pmc_req_tx_power_level, tvb, offset, 2, ENC_BIG_ENDIAN); + /* display the Confirmation/request */ + proto_tree_add_item(pmc_req_tree, hf_pmc_req_confirmation, tvb, offset, 2, ENC_BIG_ENDIAN); + /* show the Reserved bits */ + proto_tree_add_item(pmc_req_tree, hf_pmc_req_reserved, tvb, offset, 2, ENC_BIG_ENDIAN); + } + return tvb_captured_length(tvb); +} + +/* Decode PMC-RSP messages. */ +static int dissect_mac_mgmt_msg_pmc_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, void* data _U_) +{ + guint offset = 0; + proto_item *pmc_rsp_item; + proto_tree *pmc_rsp_tree; + guint8 pwr_control_mode; + gint8 value; + gfloat power_change; + + { /* we are being asked for details */ + + /* display MAC payload type PMC-RSP */ + pmc_rsp_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_pmc_rsp_decoder, tvb, 0, -1, "MAC Management Message, PMC-RSP"); + /* add MAC PMC RSP subtree */ + pmc_rsp_tree = proto_item_add_subtree(pmc_rsp_item, ett_mac_mgmt_msg_pmc_decoder); + + /* 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, ENC_BIG_ENDIAN); + else + proto_tree_add_item(pmc_rsp_tree, hf_pmc_req_pwr_control_mode_change, tvb, offset, 2, ENC_BIG_ENDIAN); + /* display the Power Adjust start frame */ + proto_tree_add_item(pmc_rsp_tree, hf_pmc_rsp_start_frame, tvb, offset, 2, ENC_BIG_ENDIAN); + 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); + } + } + return tvb_captured_length(tvb); +} + +void +proto_reg_handoff_mac_mgmt_msg_pmc(void) +{ + dissector_handle_t pmc_handle; + + pmc_handle = create_dissector_handle(dissect_mac_mgmt_msg_pmc_req_decoder, proto_mac_mgmt_msg_pmc_req_decoder); + dissector_add_uint("wmx.mgmtmsg", MAC_MGMT_MSG_PMC_REQ, pmc_handle); + + pmc_handle = create_dissector_handle(dissect_mac_mgmt_msg_pmc_rsp_decoder, proto_mac_mgmt_msg_pmc_rsp_decoder); + dissector_add_uint("wmx.mgmtmsg", MAC_MGMT_MSG_PMC_RSP, pmc_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: + */ |