diff options
Diffstat (limited to 'plugins/wimax/msg_dlmap.c')
| -rw-r--r-- | plugins/wimax/msg_dlmap.c | 2819 |
1 files changed, 2819 insertions, 0 deletions
diff --git a/plugins/wimax/msg_dlmap.c b/plugins/wimax/msg_dlmap.c new file mode 100644 index 0000000000..e5be7abb9a --- /dev/null +++ b/plugins/wimax/msg_dlmap.c @@ -0,0 +1,2819 @@ +/* msg_dlmap.c + * WiMax MAC Management DL-MAP Message decoder + * + * Copyright (c) 2007 by Intel Corporation. + * + * Author: Mike Harvey <michael.harvey@intel.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_bits.h" + +extern gint proto_wimax; +extern gboolean include_cor2_changes; + +#define MAC_MGMT_MSG_DLMAP 2 + +#define XBIT(var, bits, desc) \ + do { \ + var = BIT_BITS(bit, bufptr, bits); \ + proto_tree_add_text(tree, tvb, BITHI(bit, bits), desc ": %d", var); \ + bit += bits; \ + } while(0) + +#define VBIT(var, bits, hf) \ + do { \ + var = BIT_BITS(bit, bufptr, bits); \ + proto_tree_add_uint(tree, hf, tvb, BITHI(bit,bits), var); \ + bit += bits; \ + } while(0) + +#define XNIB(var, nibs, desc) \ + do { \ + var = NIB_NIBS(nib, bufptr, nibs); \ + proto_tree_add_text(tree, tvb, NIBHI(nib, nibs), desc ": %d", var); \ + nib += nibs; \ + } while(0) + +gint harq = 0; /* 1 if HARQ enabled (TODO) */ +gint fusc = 0; /* 1 if current zone permutation is FUSC or optional FUSC (TODO) */ +gint tusc = 0; /* 1 if current zone permutation is AMC, TUSC1 or TUSC2 (TODO) */ +gint ir_type = 0; /* reduced AAS map (TODO) */ +gint RCID_Type = 0; +gint N_layer = 0; +gint STC_Zone_Dedicated_Pilots = 0; +gint STC_Zone_Matrix = 0; +gint INC_CID = 0; +gint sub_dl_ul_map = 0; + + +extern gint man_ofdma; + +/* forward reference */ +void dissect_mac_mgmt_msg_dlmap_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree); + +gint proto_mac_mgmt_msg_dlmap_decoder = -1; + +static gint ett_dlmap = -1; +static gint ett_dlmap_ie = -1; +static gint ett_dlmap_c_ie = -1; +static gint ett_109x = -1; /* SUB-DL-UL-MAP */ +static gint ett_109x_dl = -1; +static gint ett_109x_ul = -1; +static gint ett_275_phy = -1; +static gint ett_275_1 = -1; +static gint ett_277 = -1; +static gint ett_277b = -1; +static gint ett_278 = -1; +static gint ett_279 = -1; +static gint ett_280 = -1; +static gint ett_281 = -1; +static gint ett_282 = -1; +static gint ett_283 = -1; +static gint ett_284 = -1; +static gint ett_285 = -1; +static gint ett_286 = -1; +static gint ett_286a = -1; +static gint ett_286b = -1; +static gint ett_286c = -1; +static gint ett_286d = -1; +static gint ett_286e = -1; +static gint ett_286f = -1; +static gint ett_286g = -1; +static gint ett_286h = -1; +static gint ett_286i = -1; +static gint ett_286j = -1; +static gint ett_286k = -1; +static gint ett_286l = -1; +static gint ett_286m = -1; +static gint ett_286n = -1; +static gint ett_286o = -1; +static gint ett_286p = -1; +static gint ett_286q = -1; +static gint ett_286r = -1; +static gint ett_286s = -1; +static gint ett_286t = -1; +static gint ett_286u = -1; +static gint ett_286v = -1; +static gint ett_286w = -1; +static gint ett_286x = -1; +static gint ett_286y = -1; +static gint ett_286z = -1; +static gint ett_305 = -1; +static gint ett_305_dl = -1; +static gint ett_308a = -1; + +/* Setup protocol subtree array */ +static gint *ett[] = +{ + &ett_dlmap, + &ett_dlmap_ie, + &ett_dlmap_c_ie, + &ett_109x, + &ett_109x_dl, + &ett_109x_ul, + &ett_275_phy, + &ett_275_1, + &ett_277, + &ett_277b, + &ett_278, + &ett_279, + &ett_280, + &ett_281, + &ett_282, + &ett_283, + &ett_284, + &ett_285, + &ett_286, + &ett_286a, + &ett_286b, + &ett_286c, + &ett_286d, + &ett_286e, + &ett_286f, + &ett_286g, + &ett_286h, + &ett_286i, + &ett_286j, + &ett_286k, + &ett_286l, + &ett_286m, + &ett_286n, + &ett_286o, + &ett_286p, + &ett_286q, + &ett_286r, + &ett_286s, + &ett_286t, + &ett_286u, + &ett_286v, + &ett_286w, + &ett_286x, + &ett_286y, + &ett_286z, + &ett_305, + &ett_305_dl, + &ett_308a, +}; + +#define DCD_DOWNLINK_BURST_PROFILE 1 +#define DCD_BS_EIRP 2 +#define DCD_FRAME_DURATION 3 +#define DCD_PHY_TYPE 4 +#define DCD_POWER_ADJUSTMENT 5 +#define DCD_CHANNEL_NR 6 +#define DCD_TTG 7 +#define DCD_RTG 8 +#define DCD_RSS 9 +#define DCD_CHANNEL_SWITCH_FRAME_NR 10 +#define DCD_FREQUENCY 12 +#define DCD_BS_ID 13 +#define DCD_FRAME_DURATION_CODE 14 +#define DCD_FRAME_NR 15 +#define DCD_SIZE_CQICH_ID 16 +#define DCD_H_ARQ_ACK_DELAY 17 +#define DCD_MAC_VERSION 148 +#define DCD_RESTART_COUNT 154 + +#define DCD_BURST_FREQUENCY 1 +#define DCD_BURST_FEC_CODE_TYPE 150 +#define DCD_BURST_DIUC_EXIT_THRESHOLD 151 +#define DCD_BURST_DIUC_ENTRY_THRESHOLD 152 +#define DCD_BURST_TCS_ENABLE 153 + +#define DCD_TLV_T_541_TYPE_FUNCTION_ACTION 1 +#define DCD_TLV_T542_TRIGGER_VALUE 2 +#define DCD_TLV_T_543_TRIGGER_AVERAGING_DURATION 3 +#define DCD_TLV_T_19_PERMUTATION_TYPE_FOR_BROADCAST_REGION_IN_HARQ_ZONE 19 +#define DCD_TLV_T_20_MAXIMUM_RETRANSMISSION 20 +#define DCD_TLV_T_21_DEFAULT_RSSI_AND_CINR_AVERAGING_PARAMETER 21 +#define DCD_TLV_T_22_DL_AMC_ALLOCATED_PHYSICAL_BANDS_BITMAP 22 +#define DCD_TLV_T_31_H_ADD_THRESHOLD 31 +#define DCD_TLV_T_32_H_DELETE_THRESHOLD 32 +#define DCD_TLV_T_33_ASR 33 +#define DCD_TLV_T_34_DL_REGION_DEFINITION 34 +#define DCD_TLV_T_35_PAGING_GROUP_ID 35 +#define DCD_TLV_T_36_TUSC1_PERMUTATION_ACTIVE_SUBCHANNELS_BITMAP 36 +#define DCD_TLV_T_37_TUSC2_PERMUTATION_ACTIVE_SUBCHANNELS_BITMAP 37 +#define DCD_TLV_T_45_PAGING_INTERVAL_LENGTH 45 +#define DCD_TLV_T_50_HO_TYPE_SUPPORT 50 +#define DCD_TLV_T_51_HYSTERSIS_MARGIN 51 +#define DCD_TLV_T_52_TIME_TO_TRIGGER_DURATION 52 +#define DCD_TLV_T_54_TRIGGER 54 +#define DCD_TLV_T_153_DOWNLINK_BURST_PROFILE_FOR_MULTIPLE_FEC_TYPES 153 + +#define DL_MAP_NCT_PMP 0 +#define DL_MAP_NCT_DM 1 +#define DL_MAP_NCT_PTP 2 + +/* NCT messages */ +static const value_string nct_msgs[] = +{ + { DL_MAP_NCT_PMP, "PMP" }, + { DL_MAP_NCT_PMP, "DM" }, + { DL_MAP_NCT_PMP, "PTP" }, + { 0, NULL } +}; + +/* Repetition Coding Indications */ +static const value_string rep_msgs[] = +{ + { 0, "No Repetition Coding" }, + { 1, "Repetition Coding of 2 Used" }, + { 2, "Repetition Coding of 4 Used" }, + { 3, "Repetition Coding of 6 Used" }, + { 0, NULL } +}; + +/* DL Frame Prefix Coding Indications */ +static const value_string boost_msgs[] = +{ + { 0, "Normal (not boosted)" }, + { 1, "+6dB" }, + { 2, "-6dB" }, + { 3, "+9dB" }, + { 4, "+3dB" }, + { 5, "-3dB" }, + { 6, "-9dB" }, + { 7, "-12dB" }, + { 0, NULL } +}; + +/* dl-map fields */ +static gint hf_dlmap_message_type = -1; + +static gint hf_dlmap_phy_fdur = -1; +static gint hf_dlmap_phy_fnum = -1; +static gint hf_dlmap_fch_expected = -1; +static gint hf_dlmap_dcd = -1; +static gint hf_dlmap_bsid = -1; +static gint hf_dlmap_ofdma_sym = -1; +static gint hf_dlmap_ie = -1; +static gint hf_dlmap_ie_diuc = -1; +static gint hf_dlmap_ie_ncid = -1; +static gint hf_dlmap_ie_cid = -1; +static gint hf_dlmap_ie_offsym = -1; +static gint hf_dlmap_ie_offsub = -1; +static gint hf_dlmap_ie_boosting = -1; +static gint hf_dlmap_ie_numsym = -1; +static gint hf_dlmap_ie_numsub = -1; +static gint hf_dlmap_ie_rep = -1; +static gint hf_dlmap_ie_offsym2 = -1; +static gint hf_dlmap_ie_offsub2 = -1; +static gint hf_dlmap_ie_boosting2 = -1; +static gint hf_dlmap_ie_numsym2 = -1; +static gint hf_dlmap_ie_numsub2 = -1; +static gint hf_dlmap_ie_rep2 = -1; + +static gint hf_dlmap_xie_diuc = -1; +static gint hf_dlmap_xie_len = -1; + +static gint hf_dlmapc_compr = -1; +static gint hf_dlmapc_ulmap = -1; +static gint hf_dlmapc_rsv = -1; +static gint hf_dlmapc_len = -1; +static gint hf_dlmapc_sync = -1; +static gint hf_dlmapc_opid = -1; +static gint hf_dlmapc_secid = -1; +static gint hf_dlmapc_count = -1; + +static gint hf_109x_cmi = -1; +static gint hf_109x_len = -1; +static gint hf_109x_rcid = -1; +static gint hf_109x_haoi = -1; +static gint hf_109x_dl = -1; +static gint hf_109x_ul = -1; +static gint hf_109x_dlie = -1; +static gint hf_109x_symofs = -1; +static gint hf_109x_subofs = -1; +static gint hf_109x_rsv = -1; + +static gint hf_308a_cmi = -1; +static gint hf_308a_ulmap = -1; +static gint hf_308a_type = -1; +static gint hf_308a_mult = -1; +static gint hf_308a_rsv = -1; +static gint hf_mac_header_compress_dlmap_crc = -1; + +/* DL-MAP fields display */ +static hf_register_info hf[] = +{ + { + &hf_dlmap_message_type, + { + "MAC Management Message Type", "wimax.macmgtmsgtype.dlmap", + FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_dlmap_bsid, + { + "Base Station ID", "wimax.dlmap.bsid", + FT_BYTES, BASE_HEX, NULL, 0x0, "", HFILL + } + }, + { + &hf_dlmap_dcd, + { + "DCD Count", "wimax.dlmap.dcd", + FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_dlmap_fch_expected, + { + "FCH Expected", "wimax.dlmap.fch_expected", + FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_dlmap_ie, + { + "DL-MAP IE", "wimax.dlmap.ie", + FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_dlmap_ie_boosting, + { + "Boosting", "wimax.dlmap.ie.boosting", + FT_UINT32, BASE_DEC, VALS(boost_msgs), 0x00038000, "", HFILL + } + }, + { + &hf_dlmap_ie_boosting2, + { + "Boosting", "wimax.dlmap.ie.boosting", + FT_UINT32, BASE_DEC, VALS(boost_msgs), 0x0000E000, "", HFILL + } + }, + { + &hf_dlmap_ie_cid, + { + "CID", "wimax.dlmap.ie.cid", + FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_dlmap_ie_diuc, + { + "DIUC", "wimax.dlmap.ie.diuc", + FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_dlmap_ie_ncid, + { + "N_CID", "wimax.dlmap.ie.ncid", + FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_dlmap_ie_numsub, + { + "Number of Subchannels", "wimax.dlmap.ie.numsub", + FT_UINT32, BASE_DEC, NULL, 0x000000FC, "", HFILL + } + }, + { + &hf_dlmap_ie_numsym, + { + "Number of OFDMA Symbols", "wimax.dlmap.ie.numsym", + FT_UINT32, BASE_DEC, NULL, 0x00007F00, "", HFILL + } + }, + { + &hf_dlmap_ie_numsub2, + { + "Number of Subchannels", "wimax.dlmap.ie.numsub", + FT_UINT32, BASE_DEC, NULL, 0x000000FC, "", HFILL + } + }, + { + &hf_dlmap_ie_numsym2, + { + "Number of OFDMA Symbols", "wimax.dlmap.ie.numsym", + FT_UINT32, BASE_DEC, NULL, 0x00001F00, "", HFILL + } + }, + { + &hf_dlmap_ie_offsub, + { + "Subchannel Offset", "wimax.dlmap.ie.offsub", + FT_UINT32, BASE_DEC, NULL, 0x00FC0000, "", HFILL + } + }, + { + &hf_dlmap_ie_offsym, + { + "OFDMA Symbol Offset", "wimax.dlmap.ie.offsym", + FT_UINT32, BASE_DEC, NULL, 0xFF000000, "", HFILL + } + }, + /* alt ie format */ + { + &hf_dlmap_ie_offsub2, + { + "Subchannel Offset", "wimax.dlmap.ie.offsub", + FT_UINT32, BASE_DEC, NULL, 0x00FF0000, "", HFILL + } + }, + { + &hf_dlmap_ie_offsym2, + { + "OFDMA Symbol Offset", "wimax.dlmap.ie.offsym", + FT_UINT32, BASE_DEC, NULL, 0xFF000000, "", HFILL + } + }, + { + &hf_dlmap_ie_rep, + { + "Repetition Coding Indication", "wimax.dlmap.ie.rep", + FT_UINT32, BASE_DEC, VALS(rep_msgs), 0x00000003, "", HFILL + } + }, + { + &hf_dlmap_ie_rep2, + { + "Repetition Coding Indication", "wimax.dlmap.ie.rep", + FT_UINT32, BASE_DEC, VALS(rep_msgs), 0x00000003, "", HFILL + } + }, + { + &hf_dlmap_ofdma_sym, + { + "Num OFDMA Symbols", "wimax.dlmap.ofdma_sym", + FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_dlmap_phy_fdur, + { + "Frame Duration Code", "wimax.dlmap.phy_fdur", + FT_UINT8, BASE_HEX, NULL, 0x00, "", HFILL + } + }, + { + &hf_dlmap_phy_fnum, + { + "Frame Number", "wimax.dlmap.phy_fnum", + FT_UINT24, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_dlmapc_compr, + { + "Compressed map indicator", "wimax.dlmapc.compr", + FT_UINT16, BASE_DEC, NULL, 0xe000, "", HFILL + } + }, + { + &hf_dlmapc_count, + { + "DL IE Count", "wimax.dlmapc.count", + FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_dlmapc_len, + { + "Map message length", "wimax.dlmapc.len", + FT_UINT16, BASE_DEC, NULL, 0x07FF, "", HFILL + } + }, + { + &hf_dlmapc_opid, + { + "Operator ID", "wimax.dlmapc.opid", + FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_dlmapc_rsv, + { + "Reserved", "wimax.dlmapc.rsv", + FT_UINT16, BASE_DEC, NULL, 0x0800, "", HFILL + } + }, + { + &hf_dlmapc_secid, + { + "Sector ID", "wimax.dlmapc.secid", + FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_dlmapc_sync, + { + "PHY Synchronization Field", "wimax.dlmapc.sync", + FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_dlmapc_ulmap, + { + "UL-MAP appended", "wimax.dlmapc.ulmap", + FT_UINT16, BASE_DEC, NULL, 0x1000, "", HFILL + } + }, + { + &hf_dlmap_xie_diuc, + { + "Extended DIUC", "wimax.dlmapc.xie_diuc", + FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_dlmap_xie_len, + { + "Length", "wimax.dlmapc.xie_len", + FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_109x_cmi, + { + "SUB-DL-UL-MAP map indicator", "wimax.dlul.cmi", + FT_UINT16, BASE_DEC, NULL, 0xE000, "", HFILL + } + }, + { + &hf_109x_dl, + { + "DL HARQ ACK offset", "wimax.dlul.dl", + FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_109x_dlie, + { + "DL IE Count", "wimax.dlul.dlie", + FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_109x_haoi, + { + "HARQ ACK offset indicator", "wimax.dlul.haoi", + FT_UINT16, BASE_DEC, NULL, 0x0001, "", HFILL + } + }, + { + &hf_109x_len, + { + "Map message length - The length is limited to 735 bytes at most", "wimax.dlul.len", + FT_UINT16, BASE_DEC, NULL, 0x1FF8, "", HFILL + } + }, + { + &hf_109x_rcid, + { + "RCID_Type", "wimax.dlul.rcid", + FT_UINT16, BASE_DEC, NULL, 0x0006, "", HFILL + } + }, + { + &hf_109x_subofs, + { + "Subchannel offset", "wimax.dlul.subofs", + FT_UINT8, BASE_DEC, NULL, 0xFE, "", HFILL + } + }, + { + &hf_109x_symofs, + { + "OFDMA Symbol offset of subsequent sub-bursts " + "in this Sub-DL-UL-MAP message with reference to " + "the start of UL sub-frame.", "wimax.dlul.symofs", + FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_109x_rsv, + { + "Reserved", "wimax.dlul.rsv", + FT_UINT8, BASE_DEC, NULL, 0x01, "", HFILL + } + }, + { + &hf_109x_ul, + { + "UL HARQ ACK offset", "wimax.dlul.ul", + FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL + } + }, + { + &hf_308a_cmi, + { + "Compressed map indicator", "wimax.dlmap.reduced_aas_private.cmi", + FT_UINT8, BASE_DEC, NULL, 0xe0, "", HFILL + } + }, + { + &hf_308a_mult, + { + "Multiple IE", "wimax.dlmap.reduced_aas_private.mult", + FT_UINT8, BASE_DEC, NULL, 0x02, "", HFILL + } + }, + { + &hf_308a_rsv, + { + "Reserved", "wimax.dlmap.reduced_aas_private.rsv", + FT_UINT8, BASE_DEC, NULL, 0x01, "", HFILL + } + }, + { + &hf_308a_type, + { + "Compressed Map Type", "wimax.dlmap.reduced_aas_private.type", + FT_UINT8, BASE_DEC, NULL, 0x0d, "", HFILL + } + }, + { + &hf_308a_ulmap, + { + "UL-MAP appended", "wimax.dlmap.reduced_aas_private.ulmap", + FT_UINT8, BASE_DEC, NULL, 0x10, "", HFILL + } + }, + { + &hf_mac_header_compress_dlmap_crc, + { + "CRC", "wimax.compress_dlmap_crc", + FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL + } + } +}; + +/******************************************************************** + * DL-MAP Miscellaneous IEs and TLVs + *******************************************************************/ + +gint RCID_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb, gint RCID_Type) +{ + /* RCID_IE 8.4.5.3 and 8.4.5.3.20.1 */ + /* offset of IE in bits, length is variable */ + gint bit = offset; + proto_item *ti = NULL; + proto_tree *tree = NULL; + gint Prefix = 0; + gint cid = 0; + + if (RCID_Type == 0) + length = 16; + else { + Prefix = BIT_BIT(bit, bufptr); + if (Prefix == 1) length = 12; + else if (RCID_Type == 1) length = 12; + else if (RCID_Type == 2) length = 8; + else if (RCID_Type == 3) length = 4; + } + + ti = proto_tree_add_text(diuc_tree, tvb, BITHI(bit, length), "RCID_IE"); + tree = proto_item_add_subtree(ti, ett_286j); + + if (RCID_Type == 0) { + XBIT(cid, 16, "CID"); + } else { + proto_tree_add_text(tree, tvb, BITHI(bit,1), "Prefix: %d", Prefix); + bit++; + + if (Prefix == 1) { + /* RCID 11 */ + XBIT(cid, 11, "CID11"); + } else { + if (RCID_Type == 1) { + /* RCID 11 */ + XBIT(cid, 11, "CID11"); + } else if (RCID_Type == 2) { + /* RCID 7 */ + XBIT(cid, 7, "CID7"); + } else if (RCID_Type == 3) { + /* RCID 3 */ + XBIT(cid, 3, "CID3"); + } + } + } + + proto_item_append_text(ti, " (CID = %d)", cid); + + return length; /* return length in bits */ +} + +/******************************************************************** + * DL-MAP Extended-2 HARQ sub-burst IEs (8.4.5.3.21) + *******************************************************************/ + +gint Dedicated_DL_Control_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* 8.4.5.3.20 */ + /* offset of IE in nibbles, length is variable */ + gint nib; + gint nibble; + proto_item *ti = NULL; + proto_tree *tree = NULL; + gint len; + + nib = offset; + + length = NIB_NIBBLE(nib, bufptr); /* length in nibbles */ + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(nib, length+1), "Dedicated_DL_Control_IE"); + tree = proto_item_add_subtree(ti, ett_286i); + + proto_tree_add_text(tree, tvb, NIBHI(nib,1), "Length: %d", length); + nib++; + nibble = NIB_NIBBLE(nib, bufptr); + proto_tree_add_text(tree, tvb, NIBHI(nib,1), "Control Header: %d", nibble); + nib++; + if ((nibble & 1) == 1) { + nibble = NIB_NIBBLE(nib, bufptr); + proto_tree_add_text(tree, tvb, NIBHI(nib,1), "Num SDMA Layers: %d", (nibble >> 2) & 0x3); + /* Bit padding */ + if ((nib*4)+2 < (offset+length)*4) { + len = ((offset + length - nib) * 4) - 2; + proto_tree_add_text(tree, tvb, BITHI(nib*4, len), "Reserved bits"); + } + } else { + /* Nibble padding */ + if (nib < offset+length) { + len = (offset + length) - nib; + proto_tree_add_text(tree, tvb, NIBHI(nib,len), "Reserved bits"); + } + } + return (length + 1); +} + +gint Dedicated_MIMO_DL_Control_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* offset of IE in bits, length is variable */ + gint bit; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + gint mci, cqi, cmi, matrix = 0, pad, CQICH_num, mimo_mode; + gint j; + + bit = offset; + + /* 8.4.5.3.21 table 286t */ + ti = proto_tree_add_text(diuc_tree, tvb, BITHI(bit, 1), "Dedicated MIMO DL Control IE"); + tree = proto_item_add_subtree(ti, ett_286t); + + XBIT(length, 5, "Length (nibbles)"); + XBIT(mci, 1, "Control Header (MIMO Control Info)"); + XBIT(cqi, 1, "Control Header (CQI Control Info)"); + XBIT(cmi, 1, "Control Header (Closed MIMO Control Info)"); + XBIT(N_layer, 2, "N_layer"); + + /* MIMO Control Info */ + if (mci == 1) { + XBIT(matrix, 2, "Matrix"); + if (STC_Zone_Dedicated_Pilots == 1) { + XBIT(data, 2, "Num_Beamformed_Streams"); + } + } + + /* CQICH Control Info */ + if (cqi == 1) { + CQICH_num = 0; + XBIT(data, 3, "Period"); + XBIT(data, 3, "Frame Offset"); + XBIT(data, 4, "Duration"); + for (j = 0; j < N_layer; j++) { + XBIT(data, 6, "Allocation Index"); + } + XBIT(CQICH_num, 2, "CQICH_Num"); + for (j = 0; j < CQICH_num; j++) { + XBIT(data, 3, "Feedback type"); + XBIT(data, 6, "Allocation index"); + } + } + + /* Closed MIMO Control Info */ + if (cmi == 1) { + if (mci == 1) { + mimo_mode = matrix; + } else { + mimo_mode = STC_Zone_Matrix; + } + if (mimo_mode == 0 || mimo_mode == 1) { + XBIT(data, 3, "Antenna Grouping Index"); + } else if (mimo_mode == 2) { + XBIT(data, 2, "Num_stream"); + XBIT(data, 3, "Antenna Selection Index"); + } else if (mimo_mode == 3) { + XBIT(data, 2, "Num_stream"); + XBIT(data, 6, "Codebook Precoding Index"); + } + } + + /* padding to nibble */ + pad = BIT_PADDING(bit,4); + if(pad){ + proto_tree_add_text(tree, tvb, BITHI(bit,pad), "Padding: %d bits", pad); + bit += pad; + } + + return (bit - offset); +} + +gint DL_HARQ_Chase_sub_burst_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* 8.4.5.3.21 DL_HARQ_Chase_sub_burst_IE */ + /* offset of IE in nibbles, length is variable */ + gint bit; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + gint nsub, ddci, dur, sbi, res, diuc, rci, ind, per, ofs; + gint j; + + bit = NIB_TO_BIT(offset); + + /* 8.4.5.3.21 table 286m */ + ti = proto_tree_add_text(diuc_tree, tvb, BITHI(bit, 4), "DL_HARQ_Chase_sub_burst_IE"); + tree = proto_item_add_subtree(ti, ett_286m); + + XBIT(nsub, 4, "N sub burst[ISI]"); + XBIT(data, 4, "N ACK channel"); + + for (j = 0; j < nsub; j++) { + bit += RCID_IE(tree, bufptr, bit, length, tvb, RCID_Type); + XBIT(dur, 10, "Duration"); + XBIT(sbi, 1, "Sub-Burst DIUC Indicator"); + XBIT(res, 1, "Reserved"); + + if (sbi == 1) { + XBIT(diuc, 4, "DIUC"); + XBIT(rci, 2, "Repetition Coding Indication"); + XBIT(res, 2, "Reserved"); + } + + XBIT(data, 4, "ACID"); + XBIT(data, 1, "AI_SN"); + XBIT(data, 1, "ACK disable"); + XBIT(ddci, 2, "Dedicated DL Control Indicator"); + + if ((ddci & 1) == 1) { + XBIT(dur, 4, "Duration (d)"); + if (dur != 0) { + XBIT(ind, 6, "Allocation Index"); + XBIT(per, 3, "Period (p)"); + XBIT(ofs, 3, "Frame offset"); + } + } + + if ((ddci & 2) == 2) { + bit += Dedicated_DL_Control_IE(tree, bufptr, BIT_TO_NIB(bit), length, tvb) * 4; + } + } + + proto_tree_add_text(tree, tvb, BITHI(bit,4), "(DL HARQ Chase sub-burst IE)"); + return (BIT_TO_NIB(bit) - offset); +} + +gint DL_HARQ_IR_CTC_sub_burst_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* offset of IE in nibbles, length is variable */ + gint bit; + guint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + proto_item *generic_item = NULL; + gint nsub, ddci, dur, ind, per, ofs; + gint j; + guint32 calculated_crc; + + bit = NIB_TO_BIT(offset); + + /* 8.4.5.3.21 table 286n */ + ti = proto_tree_add_text(diuc_tree, tvb, BITHI(bit, 4), "DL HARQ IR CTC sub-burst IE"); + tree = proto_item_add_subtree(ti, ett_286n); + + XBIT(nsub, 4, "N sub burst[ISI]"); + XBIT(data, 4, "N ACK channel"); + + nsub += 1; + for (j = 0; j < nsub; j++) { + bit += RCID_IE(tree, bufptr, bit, length, tvb, RCID_Type); + + XBIT(data, 4, "N(EP)"); + XBIT(data, 4, "N(SCH)"); + XBIT(data, 2, "SPID"); + XBIT(data, 4, "ACID"); + XBIT(data, 1, "AI_SN"); + XBIT(data, 1, "ACK disable"); + XBIT(data, 2, "Reserved"); + XBIT(ddci, 2, "Dedicated DL Control Indicator"); + + if ((ddci & 1) == 1) { + XBIT(dur, 4, "Duration (d)"); + + if (dur != 0) { + XBIT(ind, 6, "Allocation Index"); + XBIT(per, 3, "Period (p)"); + XBIT(ofs, 3, "Frame offset"); + } + } + if ((ddci & 2) == 2) { + bit += Dedicated_DL_Control_IE(tree, bufptr, BIT_TO_NIB(bit), length, tvb); + } + } + + if (include_cor2_changes) + { + /* CRC-16 is always appended */ + data = BIT_BITS(bit, bufptr, 16); + generic_item = proto_tree_add_text(tree, tvb, BITHI(bit,16), "CRC-16: 0x%04x",data); + /* calculate the CRC */ + calculated_crc = wimax_mac_calc_crc16((guint8 *)tvb_get_ptr(tvb, 0, BIT_TO_BYTE(bit)), BIT_TO_BYTE(bit)); + if (data != calculated_crc) + { + proto_item_append_text(generic_item, " - incorrect! (should be: 0x%x)", calculated_crc); + } + bit += 16; + } + + return (BIT_TO_NIB(bit) - offset); +} + +gint DL_HARQ_IR_CC_sub_burst_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* offset of IE in nibbles, length is variable */ + gint bit; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + proto_item *generic_item = NULL; + gint nsub, sbdi, ddci, dur, ind, per, ofs; + gint j; + guint16 calculated_crc; + + bit = NIB_TO_BIT(offset); + + /* 8.4.5.3.21 table 286o */ + ti = proto_tree_add_text(diuc_tree, tvb, BITHI(bit, 4), "DL HARQ IR CC sub-burst IE"); + tree = proto_item_add_subtree(ti, ett_286o); + + XBIT(nsub, 4, "N sub burst[ISI]"); + XBIT(data, 4, "N ACK channel"); + + nsub += 1; + for (j = 0; j < nsub; j++) { + bit += RCID_IE(tree, bufptr, bit, length, tvb, RCID_Type) / 4; + + XBIT(data, 10, "Duration"); + XBIT(sbdi, 1, "Sub-Burst DIUC Indicator"); + XBIT(data, 1, "Reserved"); + + if (sbdi) { + XBIT(data, 4, "DIUC"); + XBIT(data, 2, "Repetition Coding Indication"); + XBIT(data, 2, "Reserved"); + } + + XBIT(data, 4, "ACID"); + XBIT(data, 1, "AI_SN"); + XBIT(data, 2, "SPID"); + XBIT(data, 1, "ACK disable"); + XBIT(ddci, 2, "Dedicated DL Control Indicator"); + XBIT(data, 2, "Reserved"); + + if (ddci & 1) { + XBIT(dur, 4, "Duration (d)"); + + if (dur != 0) { + XBIT(ind, 6, "Allocation Index"); + XBIT(per, 3, "Period (p)"); + XBIT(ofs, 3, "Frame offset"); + } + } + if ((ddci & 2) == 2) { + bit += Dedicated_DL_Control_IE(tree, bufptr, BIT_TO_NIB(bit), length, tvb); + } + } + + if (include_cor2_changes) + { + /* CRC-16 is always appended */ + data = BIT_BITS(bit, bufptr, 16); + generic_item = proto_tree_add_text(tree, tvb, BITHI(bit,16), "CRC-16: 0x%04x",data); + /* calculate the CRC */ + calculated_crc = wimax_mac_calc_crc16((guint8 *)tvb_get_ptr(tvb, 0, BIT_TO_BYTE(bit)), BIT_TO_BYTE(bit)); + if (data != calculated_crc) + { + proto_item_append_text(generic_item, " - incorrect! (should be: 0x%x)", calculated_crc); + } + bit += 16; + } + + return (BIT_TO_NIB(bit) - offset); +} + +gint MIMO_DL_Chase_HARQ_sub_burst_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* offset of IE in nibbles, length is variable */ + gint bit; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + proto_item *generic_item = NULL; + gint nsub, mui, dci, akd; + gint i, j; + guint16 calculated_crc; + + bit = NIB_TO_BIT(offset); + + /* 8.4.5.3.21 table 286p */ + ti = proto_tree_add_text(diuc_tree, tvb, BITHI(bit, 1), "MIMO DL Chase HARQ sub-burst IE"); + tree = proto_item_add_subtree(ti, ett_286p); + + XBIT(nsub, 4, "N sub burst[ISI]"); + XBIT(data, 6, "N ACK channel"); + + nsub += 1; + for (j = 0; j < nsub; j++) { + XBIT(mui, 1, "MU Indicator"); + XBIT(dci, 1, "Dedicated MIMO DL Control Indicator"); + XBIT(akd, 1, "ACK Disable"); + if (mui == 0) { + bit += RCID_IE(tree, bufptr, bit, length, tvb, RCID_Type); + } + if (dci == 1) { + bit += Dedicated_MIMO_DL_Control_IE(tree, bufptr, bit, length, tvb); + } + XBIT(data, 10, "Duration"); + for (i = 0; i < N_layer; i++) { + if (mui == 1) { + bit += RCID_IE(tree, bufptr, bit, length, tvb, RCID_Type); + } + XBIT(data, 4, "DIUC"); + XBIT(data, 2, "Repetition Coding Indication"); + if (akd == 0) { + XBIT(data, 4, "ACID"); + XBIT(data, 1, "AI_SN"); + } + } + } + /* Padding to nibble */ + data = BIT_PADDING(bit, 4); + if (data) { + proto_tree_add_text(tree, tvb, BITHI(bit,data), "Padding: %d bits", data); + bit += data; + } + + if (include_cor2_changes) + { + /* CRC-16 is always appended */ + data = BIT_BITS(bit, bufptr, 16); + generic_item = proto_tree_add_text(tree, tvb, BITHI(bit,16), "CRC-16: 0x%04x",data); + /* calculate the CRC */ + calculated_crc = wimax_mac_calc_crc16((guint8 *)tvb_get_ptr(tvb, 0, BIT_TO_BYTE(bit)), BIT_TO_BYTE(bit)); + if (data != calculated_crc) + { + proto_item_append_text(generic_item, " - incorrect! (should be: 0x%x)", calculated_crc); + } + bit += 16; + } + + return (BIT_TO_NIB(bit) - offset); +} + +gint MIMO_DL_IR_HARQ_sub_burst_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* offset of IE in nibbles, length is variable */ + gint bit; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + proto_item *generic_item = NULL; + gint nsub, mui, dci, akd; + gint i, j; + guint16 calculated_crc; + + bit = NIB_TO_BIT(offset); + + /* 8.4.5.3.21 table 286q */ + ti = proto_tree_add_text(diuc_tree, tvb, BITHI(bit, 4), "MIMO DL IR HARQ sub-burst IE"); + tree = proto_item_add_subtree(ti, ett_286q); + + XBIT(nsub, 4, "N sub burst[ISI]"); + XBIT(data, 6, "N ACK channel"); + + nsub += 1; + for (j = 0; j < nsub; j++) { + XBIT(mui, 1, "MU Indicator"); + XBIT(dci, 1, "Dedicated MIMO DL Control Indicator"); + XBIT(akd, 1, "ACK Disable"); + if (mui == 0) { + bit += RCID_IE(tree, bufptr, bit, length, tvb, RCID_Type); + } + if (dci == 1) { + bit += Dedicated_MIMO_DL_Control_IE(tree, bufptr, bit, length, tvb); + } + XBIT(data, 4, "N(SCH)"); + for (i = 0; i < N_layer; i++) { + if (mui == 1) { + bit += RCID_IE(tree, bufptr, bit, length, tvb, RCID_Type); + } + XBIT(data, 4, "N(EP)"); + if (akd) { + XBIT(data, 2, "SPID"); + XBIT(data, 4, "ACID"); + XBIT(data, 1, "AI_SN"); + } + } + } + + if (include_cor2_changes) + { + /* CRC-16 is always appended */ + data = BIT_BITS(bit, bufptr, 16); + generic_item = proto_tree_add_text(tree, tvb, BITHI(bit,16), "CRC-16: 0x%04x",data); + /* calculate the CRC */ + calculated_crc = wimax_mac_calc_crc16((guint8 *)tvb_get_ptr(tvb, 0, BIT_TO_BYTE(bit)), BIT_TO_BYTE(bit)); + if (data != calculated_crc) + { + proto_item_append_text(generic_item, " - incorrect! (should be: 0x%x)", calculated_crc); + } + bit += 16; + } + + return (BIT_TO_NIB(bit) - offset); +} + +gint MIMO_DL_IR_HARQ_for_CC_sub_burst_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* offset of IE in nibbles, length is variable */ + gint bit; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + proto_item *generic_item = NULL; + gint nsub, mui, dci, akd; + gint i, j; + guint16 calculated_crc; + + bit = NIB_TO_BIT(offset); + + /* 8.4.5.3.21 table 286r */ + ti = proto_tree_add_text(diuc_tree, tvb, BITHI(bit, 1), "MIMO DL IR HARQ for CC sub-burst IE"); + tree = proto_item_add_subtree(ti, ett_286r); + + XBIT(nsub, 4, "N sub burst[ISI]"); + XBIT(data, 6, "N ACK channel"); + + nsub += 1; + for (j = 0; j < nsub; j++) { + XBIT(mui, 1, "MU Indicator"); + XBIT(dci, 1, "Dedicated MIMO DL Control Indicator"); + XBIT(akd, 1, "ACK Disable"); + if (mui == 0) { + bit += RCID_IE(tree, bufptr, bit, length, tvb, RCID_Type); + } + if (dci == 1) { + bit += Dedicated_MIMO_DL_Control_IE(tree, bufptr, bit, length, tvb); + } + XBIT(data, 10, "Duration"); + for (i = 0; i < N_layer; i++) { + if (mui == 1) { + bit += RCID_IE(tree, bufptr, bit, length, tvb, RCID_Type); + } + XBIT(data, 4, "DIUC"); + XBIT(data, 2, "Repetition Coding Indication"); + if (akd == 0) { + XBIT(data, 4, "ACID"); + XBIT(data, 1, "AI_SN"); + XBIT(data, 2, "SPID"); + } + } + } + + if (include_cor2_changes) + { + /* CRC-16 is always appended */ + data = BIT_BITS(bit, bufptr, 16); + generic_item = proto_tree_add_text(tree, tvb, BITHI(bit,16), "CRC-16: 0x%04x",data); + /* calculate the CRC */ + calculated_crc = wimax_mac_calc_crc16((guint8 *)tvb_get_ptr(tvb, 0, BIT_TO_BYTE(bit)), BIT_TO_BYTE(bit)); + if (data != calculated_crc) + { + proto_item_append_text(generic_item, " - incorrect! (should be: 0x%x)", calculated_crc); + } + bit += 16; + } + + return (BIT_TO_NIB(bit) - offset); +} + +gint MIMO_DL_STC_HARQ_sub_burst_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* offset of IE in nibbles, length is variable */ + gint bit; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + proto_item *generic_item = NULL; + gint nsub, sbi, txc, akd, dmci; + gint j; + guint16 calculated_crc; + + bit = NIB_TO_BIT(offset); + + /* 8.4.5.3.21 table 286s */ + ti = proto_tree_add_text(diuc_tree, tvb, BITHI(bit, 1), "MIMO DL STC HARQ sub-burst IE"); + tree = proto_item_add_subtree(ti, ett_286s); + + XBIT(nsub, 4, "N sub burst[ISI]"); + XBIT(data, 6, "N ACK channel"); + + nsub += 1; + for (j = 0; j < nsub; j++) { + XBIT(txc, 2, "TX Count"); + XBIT(data, 10, "Duration"); + XBIT(sbi, 1, "Sub-burst offset indication"); + XBIT(data, 3, "Reserved"); + if (sbi == 1) { + XBIT(data, 8, "Sub-burst offset"); + } + bit += RCID_IE(tree, bufptr, bit, length, tvb, RCID_Type); + XBIT(akd, 1, "ACK Disable"); + if (txc == 0) { + XBIT(dmci, 1, "Dedicated MIMO DL Control Indicator"); + if (dmci == 1) { + bit += Dedicated_MIMO_DL_Control_IE(tree, bufptr, bit, length, tvb); + } + XBIT(data, 4, "DIUC"); + XBIT(data, 2, "Repetition coding Indication"); + } + if (akd == 0) { + XBIT(data, 4, "ACID"); + } + } + + if (include_cor2_changes) + { + /* CRC-16 is always appended */ + data = BIT_BITS(bit, bufptr, 16); + generic_item = proto_tree_add_text(tree, tvb, BITHI(bit,16), "CRC-16: 0x%04x",data); + /* calculate the CRC */ + calculated_crc = wimax_mac_calc_crc16((guint8 *)tvb_get_ptr(tvb, 0, BIT_TO_BYTE(bit)), BIT_TO_BYTE(bit)); + if (data != calculated_crc) + { + proto_item_append_text(generic_item, " - incorrect! (should be: 0x%x)", calculated_crc); + } + bit += 16; + } + + return (BIT_TO_NIB(bit) - offset); +} + +/******************************************************************** + * DL-MAP Extended-2 IEs + *******************************************************************/ + +gint MBS_MAP_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended-2 IE = 0 */ + /* 8.4.5.3.12 MBS_MAP_IE */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint bit; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + gint mde, dci, s3i; + + bit = NIB_TO_BIT(offset); + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "MBS_MAP_IE"); + tree = proto_item_add_subtree(ti, ett_286a); + + XBIT(data, 4, "Extended-2 DIUC"); + XBIT(data, 8, "Length"); + + XBIT(data, 7, "MBS Zone identifier"); + XBIT(mde, 1, "Macro diversity enhanced"); + if (mde == 1) + { + XBIT(data, 2, "Permutation"); + XBIT(data, 5, "DL_PermBase"); + XBIT(data, 2, "PRBS_ID"); + XBIT(data, 7, "OFDMA_Symbol_Offset"); + XBIT(dci, 1, "DIUC_change_indication"); + XBIT(data, 3, "Reserved"); + if (dci == 1) { + XBIT(data, 3, "Reserved"); + XBIT(data, 3, "Boosting"); + XBIT(data, 4, "DIUC"); + XBIT(data, 6, "No. Subchannels"); + XBIT(data, 6, "No. OFDMA Symbols"); + XBIT(data, 2, "Repetition Coding Indication"); + } + } else { + XBIT(data, 4, "DIUC"); + XBIT(data, 16, "CID"); + XBIT(data, 8, "OFDMA Symbols Offset"); + XBIT(data, 6, "Subchannel offset"); + XBIT(data, 3, "Boosting"); + XBIT(s3i, 1, "SLC_3_indication"); + XBIT(data, 6, "No. OFDMA Symbols"); + XBIT(data, 6, "No. Subchannels"); + XBIT(data, 2, "Repetition Coding Indication"); + if (s3i == 1) { + XBIT(data, 8, "Next MBS_MAP_IE frame offset"); + } + } + data = BIT_PADDING(bit, 4); + if (data) { + proto_tree_add_text(tree, tvb, BITHI(bit,data), "Padding: %d bits", data); + bit += data; + } + return BIT_TO_NIB(bit); +} + +gint HO_Anchor_Active_DL_MAP_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended-2 IE = 1 */ + /* 8.4.5.3.14 [2] HO_Anchor_Active_DL-MAP_IE TODO 1.1 */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint nib; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + + nib = offset; + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "HO_Anchor_Active_DL_MAP_IE"); + tree = proto_item_add_subtree(ti, ett_286c); + + XNIB(data, 1, "Extended-2 DIUC"); + XNIB(data, 2, "Length"); + proto_tree_add_text(diuc_tree, tvb, NIBHI(nib, length-3), "(not implemented)"); + return nib; +} + +gint HO_Active_Anchor_DL_MAP_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended-2 IE = 2 */ + /* 8.4.5.3.15 HO_Active_Anchor_DL_MAP_IE TODO 1.1 */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint nib; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + + nib = offset; + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "HO_Active_Anchor_DL_MAP_IE"); + tree = proto_item_add_subtree(ti, ett_286d); + + XNIB(data, 1, "Extended-2 DIUC"); + XNIB(data, 2, "Length"); + proto_tree_add_text(diuc_tree, tvb, NIBHI(nib, length-3), "(not implemented)"); + return nib; +} + +gint HO_CID_Translation_MAP_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended-2 IE = 3 */ + /* 8.4.5.3.16 HO_CID_Translation_MAP_IE TODO 1.1 */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint nib; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + + nib = offset; + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "CID_Translation_MAP_IE"); + tree = proto_item_add_subtree(ti, ett_286e); + + XNIB(data, 1, "Extended-2 DIUC"); + XNIB(data, 2, "Length"); + proto_tree_add_text(diuc_tree, tvb, NIBHI(nib, length-3), "(not implemented)"); + return nib; +} + +gint MIMO_in_another_BS_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended-2 IE = 4 */ + /* 8.4.5.3.17 [2] MIMO_in_another_BS_IE (not implemented)*/ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint nib; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + + nib = offset; + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "MIMO_in_another_BS_IE"); + tree = proto_item_add_subtree(ti, ett_286f); + + XNIB(data, 1, "Extended-2 DIUC"); + XNIB(data, 2, "Length"); + proto_tree_add_text(diuc_tree, tvb, NIBHI(nib, length-3), "(not implemented)"); + return nib; +} + +gint Macro_MIMO_DL_Basic_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* dl-map extended-2 ie = 5 */ + /* 8.4.5.3.18 [2] Macro-MIMO_DL_Basic_IE (not implemented) */ + /* offset of tlv in nibbles, length of tlv in nibbles */ + gint nib; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + + nib = offset; + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "Macro_MIMO_DL_Basic_IE"); + tree = proto_item_add_subtree(ti, ett_286g); + + XNIB(data, 1, "Extended-2 DIUC"); + XNIB(data, 2, "Length"); + proto_tree_add_text(diuc_tree, tvb, NIBHI(nib, length-3), "(not implemented)"); + return nib; +} + +gint Skip_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended-2 IE = 6 */ + /* 8.4.5.3.20.2 Skip_IE */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint bit; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + + bit = NIB_TO_BIT(offset); + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "Skip_IE"); + tree = proto_item_add_subtree(ti, ett_286k); + + XBIT(data, 4, "Extended-2 DIUC"); + XBIT(data, 8, "Length"); + + XBIT(data, 1, "Mode"); + XBIT(data, 7, "Reserved"); + + return BIT_TO_NIB(bit); +} + +gint HARQ_DL_MAP_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended-2 IE = 7 */ + /* 8.4.5.3.21 [2] HARQ_DL_MAP_IE */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint bit; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + gint len, lastbit, rui, mode; + + bit = NIB_TO_BIT(offset); + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "HARQ_DL_MAP_IE"); + tree = proto_item_add_subtree(ti, ett_286l); + + XBIT(data, 4, "Extended-2 DIUC"); + XBIT(len, 8, "Length"); + + XBIT(RCID_Type, 2, "RCID_Type"); + XBIT(data, 2, "Reserved"); + + /* while data remains */ + length = NIB_TO_BIT(length); + /* Subtract extra nibble to be sure to stop in time. */ + lastbit = bit + BYTE_TO_BIT(len) - 14 - 4; + while (bit < lastbit) { + XBIT(data, 3, "Boosting"); + XBIT(rui, 1, "Region_ID use indicator"); + + if (rui == 0) { + XBIT(data, 8, "OFDMA symbol offset"); + XBIT(data, 7, "Subchannel offset"); + XBIT(data, 7, "Number of OFDMA symbols"); + XBIT(data, 7, "Number of subchannels"); + if (include_cor2_changes) + { + XBIT(data, 1, "Rectangular Sub-Burst Indicator"); /* Implemented: "Rectangular Sub-Burst Indicator" field added */ + XBIT(data, 2, "Reserved"); /* and "Reserved" field resized from 3 bits to 2 bits */ + } + else + { + XBIT(data, 3, "Reserved"); + } + } else { + XBIT(data, 8, "Region_ID"); + } + XBIT(mode, 4, "Mode"); + XBIT(data, 8, "Sub-burst IE Length"); + + /* 8.4.5.3.21 */ + /* length of these are variable, each returns length in nibbles */ + if (mode == 0) { + bit += 4*DL_HARQ_Chase_sub_burst_IE(diuc_tree, bufptr, BIT_TO_NIB(bit), length, tvb); + } else if (mode == 1) { + bit += 4*DL_HARQ_IR_CTC_sub_burst_IE(diuc_tree, bufptr, BIT_TO_NIB(bit), length, tvb); + } else if (mode == 2) { + bit += 4*DL_HARQ_IR_CC_sub_burst_IE(diuc_tree, bufptr, BIT_TO_NIB(bit), length, tvb); + } else if (mode == 3) { + bit += 4*MIMO_DL_Chase_HARQ_sub_burst_IE(diuc_tree, bufptr, BIT_TO_NIB(bit), length, tvb); + } else if (mode == 4) { + bit += 4*MIMO_DL_IR_HARQ_sub_burst_IE(diuc_tree, bufptr, BIT_TO_NIB(bit), length, tvb); + } else if (mode == 5) { + bit += 4*MIMO_DL_IR_HARQ_for_CC_sub_burst_IE(diuc_tree, bufptr, BIT_TO_NIB(bit), length, tvb); + } else if (mode == 6) { + bit += 4*MIMO_DL_STC_HARQ_sub_burst_IE(diuc_tree, bufptr, BIT_TO_NIB(bit), length, tvb); + } else { + proto_tree_add_text(diuc_tree, tvb, BITHI(bit,1), "(reserved Mode)"); + break; /* cannot continue */ + } + } + return BIT_TO_NIB(bit); +} + +gint HARQ_ACK_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended-2 IE = 8 */ + /* 8.4.5.3.22 HARQ_ACK IE */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint data; + gint nib; + proto_item *ti = NULL; + proto_tree *tree = NULL; + + nib = offset; + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "HARQ_ACK_IE"); + tree = proto_item_add_subtree(ti, ett_286u); + + XNIB(data, 1, "Extended-2 DIUC"); + XNIB(data, 2, "Length"); + + proto_tree_add_text(diuc_tree, tvb, NIBHI(nib,length-3), "(bitmap data)"); + + return nib; +} + +gint Enhanced_DL_MAP_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended-2 IE = 9 */ + /* 8.4.5.3.23 Enhanced DL MAP IE */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint bit; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + gint numass, n_cid; + gint i, n; + + bit = NIB_TO_BIT(offset); + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "Enhanced_DL-MAP_IE"); + tree = proto_item_add_subtree(ti, ett_286v); + + XBIT(data, 4, "Extended-2 DIUC"); + XBIT(data, 8, "Length"); + + XBIT(numass, 4, "Num_Assignment"); + for (i = 0; i < numass; i++) { + if (INC_CID == 1) { + XBIT(n_cid, 8, "N_CID"); + for (n = 0; n < n_cid; n++) { + XBIT(data, 16, "CID"); + } + } + XBIT(data, 4, "DIUC"); + XBIT(data, 3, "Boosting"); + XBIT(data, 2, "Repetition Coding Indication"); + XBIT(data, 8, "Region_ID"); + XBIT(data, 3, "Reserved"); + } + return BIT_TO_NIB(bit); +} + +gint Closed_loop_MIMO_DL_Enhanced_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended-2 IE = 0xA */ + /* 8.4.5.3.24 Closed-loop MIMO DL Enhanced IE (not implemented) */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint nib; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + + nib = offset; + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "CL_MIMO_DL_Enhanced_IE"); + tree = proto_item_add_subtree(ti, ett_286w); + + XNIB(data, 1, "Extended-2 DIUC"); + XNIB(data, 2, "Length"); + proto_tree_add_text(diuc_tree, tvb, NIBHI(nib, length-3), "(not implemented)"); + return nib; +} + +gint AAS_SDMA_DL_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended-2 IE = 0xE */ + /* 8.4.5.3.26 AAS_SDMA_DL_IE */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint bit; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + gint num_region, num_users, pilot_pattern, encoding_mode, ackch_alloc, cqich_alloc; + gint aas_preamble = 1; + gint zone_permut = 0; /* TODO */ + gint i, j; + + bit = NIB_TO_BIT(offset); + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "AAS_SDMA_DL_IE"); + tree = proto_item_add_subtree(ti, ett_286y); + + XBIT(data, 4, "Extended-2 DIUC"); + XBIT(data, 8, "Length"); + + XBIT(RCID_Type, 2, "RCID_Type"); + XBIT(num_region, 4, "Num_Burst_Region"); + XBIT(data, 2, "Reserved"); + for (i = 0; i < num_region; i++) { + XBIT(data, 8, "OFDMA Symbol Offset"); + if (zone_permut == 0) { + XBIT(data, 8, "Subchannel offset"); + XBIT(data, 5, "No. OFDMA triple symbols"); + XBIT(data, 6, "No. subchannels"); + } else { + XBIT(data, 6, "Subchannel offset"); + XBIT(data, 7, "No. OFDMA triple symbols"); + XBIT(data, 6, "No. subchannels"); + } + XBIT(num_users, 3, "Number of Users"); + XBIT(data, 2, "Reserved"); + for (j = 0; j < num_users; j++) { + bit += RCID_IE(tree, bufptr, bit, length, tvb, RCID_Type); + XBIT(encoding_mode, 2, "Encoding Mode"); + XBIT(cqich_alloc, 1, "CQICH Allocation"); + XBIT(ackch_alloc, 1, "ACKCH Allocation"); + XBIT(pilot_pattern, 1, "Pilot Pattern Modifier"); + if (aas_preamble) { + XBIT(data, 4, "Preamble Modifier Index"); + } + if (pilot_pattern) { + XBIT(data, 2, "Pilot Pattern"); + XBIT(data, 1, "Reserved"); + } else { + XBIT(data, 3, "Reserved"); + } + if (encoding_mode == 0x0) { + XBIT(data, 4, "DIUC"); + XBIT(data, 2, "Repetition Coding Indication"); + XBIT(data, 2, "Reserved"); + } + if (encoding_mode == 0x1) { + if (ackch_alloc) { + XBIT(data, 5, "ACK CH Index"); + } else { + XBIT(data, 1, "Reserved"); + } + XBIT(data, 4, "DIUC"); + XBIT(data, 2, "Repetition Coding Indication"); + XBIT(data, 4, "ACID"); + XBIT(data, 1, "AI_SN"); + } + if (encoding_mode == 0x2) { + if (ackch_alloc) { + XBIT(data, 5, "ACK CH Index"); + } else { + XBIT(data, 1, "Reserved"); + } + XBIT(data, 4, "N(EP)"); + XBIT(data, 4, "N(SCH)"); + XBIT(data, 2, "SPID"); + XBIT(data, 4, "ACID"); + XBIT(data, 1, "AI_SN"); + } + if (encoding_mode == 0x3) { + if (ackch_alloc) { + XBIT(data, 5, "ACK CH Index"); + XBIT(data, 2, "Reserved"); + } else { + XBIT(data, 3, "Reserved"); + } + XBIT(data, 4, "DIUC"); + XBIT(data, 2, "Repetition Coding Indication"); + XBIT(data, 2, "SPID"); + XBIT(data, 4, "ACID"); + XBIT(data, 1, "AI_SN"); + } + if (cqich_alloc) { + XBIT(data, 6, "Allocation Index"); + XBIT(data, 3, "Period (p)"); + XBIT(data, 3, "Frame offset"); + XBIT(data, 4, "Duration (d)"); + } + } + } + data = BIT_PADDING(bit,4); + /* Should this be an optional field? Or do we want it, even if it has a length of zero? */ + proto_tree_add_text(tree, tvb, BITHI(bit,data), "Padding: %d bits", data); + bit += data; + + return BIT_TO_NIB(bit); +} + + + +/******************************************************************** + * DL-MAP Extended IEs + *******************************************************************/ + +gint Channel_Measurement_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended IE = 0 */ + /* 8.4.5.3.5 [1] Channel_Measurement_IE */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint nib; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + + nib = offset; + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "Channel_Measurement_IE"); + tree = proto_item_add_subtree(ti, ett_280); + + XNIB(data, 1, "Extended DIUC"); + XNIB(data, 1, "Length"); + + XNIB(data, 2, "Channel Nr"); + XNIB(data, 2, "OFDMA Symbol Offset"); + data = NIB_WORD(nib, bufptr); + proto_tree_add_text(tree, tvb, NIBHI(nib,4), "CID: %d", data); + nib += 4; + return nib; +} + +gint STC_Zone_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended IE = 1 */ + /* 8.4.5.3.4 STC_Zone_IE */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + /* set globals: STC_Zone_Dedicated_Pilots, STC_Zone_Matrix + * used in 8.4.5.3.21.1 Dedicated MIMO Control IE 286t */ + gint bit; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + + bit = NIB_TO_BIT(offset); + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "STC_Zone_IE"); + tree = proto_item_add_subtree(ti, ett_279); + + XBIT(data, 4, "Extended DIUC"); + XBIT(data, 4, "Length"); + + XBIT(data, 8, "OFDMA Symbol Offset"); + XBIT(data, 2, "Permutations"); + XBIT(data, 1, "Use All SC indicator"); + XBIT(data, 2, "STC"); + XBIT(STC_Zone_Matrix, 2, "Matrix indicator"); + XBIT(data, 5, "DL_PermBase"); + XBIT(data, 2, "PRBS_ID"); + XBIT(data, 2, "AMC type"); + XBIT(data, 1, "Midamble Presence"); + XBIT(data, 1, "Midamble Boosting"); + XBIT(data, 1, "2/3 antenna select"); + XBIT(STC_Zone_Dedicated_Pilots, 1, "Dedicated Pilots"); + XBIT(data, 4, "Reserved"); + + return BIT_TO_NIB(bit); +} + +gint AAS_DL_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended IE = 2 */ + /* 8.4.5.3.3 AAS_DL_IE */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint bit; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + + bit = NIB_TO_BIT(offset); + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "AAS_DL_IE"); + tree = proto_item_add_subtree(ti, ett_278); + + XBIT(data, 4, "Extended DIUC"); + XBIT(data, 4, "Length"); + + XBIT(data, 8, "OFDMA Symbol Offset"); + XBIT(data, 3, "Permutation"); + XBIT(data, 6, "DL_PermBase"); + XBIT(data, 2, "Downlink_preamble_config"); + XBIT(data, 1, "Preamble type"); + XBIT(data, 2, "PRBS_ID"); + XBIT(data, 1, "Diversity Map"); + XBIT(data, 1, "Reserved"); + + return BIT_TO_NIB(bit); +} + +gint Data_location_in_another_BS_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended IE = 3 */ + /* 8.4.5.3.6 Data_location_in_another_BS_IE */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint bit; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + + bit = NIB_TO_BIT(offset); + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "Data location in another BS IE"); + tree = proto_item_add_subtree(ti, ett_281); + + XBIT(data, 4, "Extended DIUC"); + XBIT(data, 4, "Length"); + + XBIT(data, 2, "Segment"); + XBIT(data, 6, "Used subchannels"); + XBIT(data, 4, "DIUC"); + XBIT(data, 3, "Frame Advance"); + XBIT(data, 1, "Reserved"); + XBIT(data, 8, "OFDMA Symbol Offset"); + XBIT(data, 6, "Subchannel Offset"); + XBIT(data, 3, "Boosting"); + XBIT(data, 7, "Preamble Index"); + XBIT(data, 8, "No. OFDMA Symbols"); + XBIT(data, 6, "No. Subchannels"); + XBIT(data, 2, "Repetition Coding Indication"); + XBIT(data, 16, "CID"); + + return BIT_TO_NIB(bit); +} + +gint CID_Switch_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended IE = 4 */ + /* 8.4.5.3.7 [1] CID_Switch_IE */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint nib; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + + nib = offset; + + INC_CID = INC_CID ? 0 : 1; + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "CID_Switch_IE"); + proto_item_append_text(ti, " (INC_CID = %d)",INC_CID); + tree = proto_item_add_subtree(ti, ett_282); + + XNIB(data, 1, "Extended DIUC"); + XNIB(data, 1, "Length"); + + return nib; +} + +gint MIMO_DL_Basic_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended IE = 5 */ + /* 8.4.5.3.8 MIMO_DL_Basic_IE (not implemented) */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint nib; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + + nib = offset; + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "MIMO_DL_Basic_IE"); + tree = proto_item_add_subtree(ti, ett_283); + + XNIB(data, 1, "Extended-2 DIUC"); + XNIB(data, 2, "Length"); + proto_tree_add_text(diuc_tree, tvb, NIBHI(nib, length-2), "(not implemented)"); + return nib; +} + +gint MIMO_DL_Enhanced_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended IE = 6 */ + /* 8.4.5.3.9 MIMO_DL_Enhanced_IE (not implemented) */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint nib; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + + nib = offset; + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "MIMO_DL_Enhanced_IE"); + tree = proto_item_add_subtree(ti, ett_284); + + XNIB(data, 1, "Extended-2 DIUC"); + XNIB(data, 2, "Length"); + proto_tree_add_text(diuc_tree, tvb, NIBHI(nib, length-2), "(not implemented)"); + return nib; +} + +gint HARQ_Map_Pointer_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended IE = 7 */ + /* 8.4.5.3.10 [2] HARQ_Map_Pointer_IE */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint bit; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + gint length_in_bits, rep, map, diuc, slots, idle, sleep, mask_len; + + bit = NIB_TO_BIT(offset); + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "HARQ_Map_Pointer_IE"); + tree = proto_item_add_subtree(ti, ett_285); + + XBIT(data, 4, "Extended DIUC"); + XBIT(data, 4, "Length"); + + length_in_bits = NIB_TO_BIT(length-1); + while (bit < length_in_bits) { + XBIT(diuc, 4, "DIUC"); + XBIT(slots, 8, "No. Slots"); + XBIT(rep, 2, "Repetition Coding Indication"); + XBIT(map, 2, "Map Version"); + if (map == 2) { + XBIT(idle, 1, "Idle users"); + XBIT(sleep, 1, "Sleep users"); + XBIT(mask_len, 2, "CID Mask Length"); + if (mask_len == 0) { + /* 12 bits */ + proto_tree_add_text(diuc_tree, tvb, BITHI(bit,12), "CID Mask: 12 bits"); + bit += 12; + } else if (mask_len == 1) { + /* 20 bits */ + proto_tree_add_text(diuc_tree, tvb, BITHI(bit,20), "CID Mask: 20 bits"); + bit += 20; + } else if (mask_len == 2) { + /* 36 bits */ + proto_tree_add_text(diuc_tree, tvb, BITHI(bit,36), "CID Mask: 36 bits"); + bit += 36; + } else if (mask_len == 3) { + /* 52 bits */ + proto_tree_add_text(diuc_tree, tvb, BITHI(bit,52), "CID Mask: 52 bits"); + bit += 52; + } + } + } + return BIT_TO_NIB(bit); +} + +gint PHYMOD_DL_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended IE = 8 */ + /* 8.4.5.3.11 PHYMOD_DL_IE */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint bit; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + gint pmt; + + bit = NIB_TO_BIT(offset); + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "PHYMOD_DL_IE"); + tree = proto_item_add_subtree(ti, ett_286); + + XBIT(data, 4, "Extended DIUC"); + XBIT(data, 4, "Length"); + + XBIT(pmt, 1, "Preamble Modifier Type"); + if (pmt == 0) { + XBIT(data, 4, "Preamble frequency shift index"); + } else { + XBIT(data, 4, "Preamble Time Shift Index"); + } + XBIT(data, 1, "Pilot Pattern Modifier"); + XBIT(data, 2, "Pilot Pattern Index"); + + return BIT_TO_NIB(bit); +} + +gint Broadcast_Control_Pointer_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended IE = 0xA */ + /* 8.4.5.3.25 Broadcast Control Pointer IE */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint bit; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + gint skip; + + bit = NIB_TO_BIT(offset); + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "Broadcast Control Pointer IE"); + tree = proto_item_add_subtree(ti, ett_286x); + + XBIT(data, 4, "Extended DIUC"); + XBIT(data, 4, "Length"); + + XBIT(data, 7, "DCD_UCD Transmission Frame"); + XBIT(skip, 1, "Skip Broadcast_System_Update"); + if (skip == 0) { + XBIT(data, 1, "Broadcast_System_Update_Type"); + XBIT(data, 7, "Broadcast_System_Update_Transmission_Frame"); + } + return BIT_TO_NIB(bit); +} + +gint DL_PUSC_Burst_Allocation_in_Other_Segment_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended IE = 0xB */ + /* 8.4.5.3.13 DL PUSC Burst Allocation in Other Segment IE */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint bit; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + + bit = NIB_TO_BIT(offset); + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "DL_PUSC_Burst_Allocation_in_Other_Segment_IE"); + tree = proto_item_add_subtree(ti, ett_286b); + + XBIT(data, 4, "Extended DIUC"); + XBIT(data, 4, "Length"); + + XBIT(data, 16, "CID"); + XBIT(data, 4, "DIUC"); + XBIT(data, 2, "Segment"); + XBIT(data, 3, "Boosting"); + XBIT(data, 5, "IDcell"); + XBIT(data, 5, "DL_PermBase"); + XBIT(data, 2, "PRBS_ID"); + XBIT(data, 2, "Repetition coding indication"); + XBIT(data, 6, "Used Subchannels"); + XBIT(data, 8, "OFDMA symbol offset"); + XBIT(data, 1, "Reserved"); + XBIT(data, 7, "# OFDMA symbols"); + XBIT(data, 6, "Subchannel offset"); + XBIT(data, 6, "# subchannels"); + XBIT(data, 7, "Reserved"); + return BIT_TO_NIB(bit); +} + +gint PUSC_ASCA_Alloc_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended IE = 0xC */ + /* 8.4.5.3.27 PUSC_ASCA_Alloc_IE */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint bit; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + + bit = NIB_TO_BIT(offset); + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "PUSC_ASCA_Alloc_IE"); + tree = proto_item_add_subtree(ti, ett_286z); + + XBIT(data, 4, "Extended DIUC"); + XBIT(data, 4, "Length"); + XBIT(data, 4, "DIUC"); + XBIT(data, 12, "Short Basic CID"); + XBIT(data, 8, "OFDMA Symbol offset"); + XBIT(data, 6, "Subchannel offset"); + XBIT(data, 7, "# OFDMA Symbols"); + XBIT(data, 6, "# Symbols"); + XBIT(data, 2, "Repetition Coding Information"); + XBIT(data, 4, "Permutation ID"); + XBIT(data, 7, "Reserved"); + + return BIT_TO_NIB(bit); +} + +gint UL_interference_and_noise_level_IE(proto_tree *diuc_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* DL-MAP Extended IE = 0xF */ + /* 8.4.5.3.19 UL_interference_and_noise_level_IE */ + /* offset of TLV in nibbles, length of TLV in nibbles */ + gint nib; + gint data; + proto_item *ti = NULL; + proto_tree *tree = NULL; + gint bitmap; + + nib = offset; + + ti = proto_tree_add_text(diuc_tree, tvb, NIBHI(offset, length), "UL_interference_and_noise_level_IE"); + tree = proto_item_add_subtree(ti, ett_286h); + + XNIB(data, 1, "Extended DIUC"); + XNIB(data, 1, "Length"); + + XNIB(bitmap, 1, "Bitmap"); + + if (bitmap & 0x01) { + XNIB(data, 2, "CQI/ACK/Periodic Ranging region NI"); + } + if (bitmap & 0x02) { + XNIB(data, 2, "PUSC region NI"); + } + if (bitmap & 0x04) { + XNIB(data, 2, "Optional PUSC region NI"); + } + if (bitmap & 0x08) { + XNIB(data, 2, "AMC region NI"); + } + if (bitmap & 0x10) { + XNIB(data, 2, "AAS region NI"); + } + if (bitmap & 0x20) { + XNIB(data, 2, "Periodic Ranging region NI"); + } + if (bitmap & 0x40) { + XNIB(data, 2, "Sounding region NI"); + } + if (bitmap & 0x80) { + XNIB(data, 2, "MIMO region NI"); + } + + return nib; +} + +/******************************************************************** + * DL-MAP Plugin + *******************************************************************/ + +extern gint wimax_decode_ulmapc(proto_tree *base_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb); + +/* Register Wimax Mac Payload Protocol and Dissector */ +void proto_register_mac_mgmt_msg_dlmap(void) +{ + if (proto_mac_mgmt_msg_dlmap_decoder == -1) + { + proto_mac_mgmt_msg_dlmap_decoder = proto_register_protocol ( + "WiMax DLMAP/ULMAP Messages", /* name */ + "WiMax DLMAP/ULMAP (map)", /* short name */ + "map" /* abbrev */ + ); + + proto_register_field_array(proto_mac_mgmt_msg_dlmap_decoder, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + } +} + +gint dissect_dlmap_ie(proto_tree *ie_tree, const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb) +{ + /* decode a single DL-MAP IE and return the + * length of the IE in nibbles + * offset = start of IE (nibbles) + * length = total length of bufptr (nibbles) */ + proto_item *ti = NULL; + proto_tree *tree = NULL; + + gint nibble = offset; + gint diuc; + gint ext2_diuc; + gint len; + gint ext_diuc; + + gint alt_format = 0; + guint data = 0; + gint i; + gint papr = 0; + gint ie_len = 9; + + gint n_cid; + + /* 8.4.5.3 DL-MAP IE format - table 275 */ + diuc = NIB_NIBBLE(nibble, bufptr); + if (diuc == 14) + { + /* 8.4.5.3.2.2 [2] Extended-2 DIUC dependent IE table 277b */ + ext2_diuc = NIB_NIBBLE(1+nibble, bufptr); + len = NIB_BYTE(1+nibble+1, bufptr); + + ti = proto_tree_add_uint(ie_tree, hf_dlmap_ie_diuc, tvb, NIBHI(nibble, 1+3+len*2), diuc); + proto_item_append_text(ti, " (Extended-2)"); + tree = proto_item_add_subtree(ti, ett_277b); + nibble++; + + len = 3 + BYTE_TO_NIB(len); + + /* table 277c [2] */ + switch (ext2_diuc) + { + case 0x00: + /* 8.4.5.3.12 MBS_MAP_IE */ + nibble = MBS_MAP_IE(tree, bufptr, nibble, len, tvb); + break; + case 0x01: + /* 8.4.5.3.14 HO_Anchor_Active_DL-MAP_IE */ + nibble = HO_Anchor_Active_DL_MAP_IE(tree, bufptr, nibble, len, tvb); + break; + case 0x02: + /* 8.4.5.3.15 HO_Active_Anchor_DL_MAP_IE */ + nibble = HO_Active_Anchor_DL_MAP_IE(tree, bufptr, nibble, len, tvb); + break; + case 0x03: + /* 8.4.5.3.16 HO_CID_Translation_MAP_IE */ + nibble = HO_CID_Translation_MAP_IE(tree, bufptr, nibble, len, tvb); + break; + case 0x04: + /* 8.4.5.3.17 MIMO_in_another_BS_IE */ + nibble = MIMO_in_another_BS_IE(tree, bufptr, nibble, len, tvb); + break; + case 0x05: + /* 8.4.5.3.18 Macro-MIMO_DL_Basic_IE */ + nibble = Macro_MIMO_DL_Basic_IE(tree, bufptr, nibble, len, tvb); + break; + case 0x06: + /* 8.4.5.3.20.2 Skip_IE */ + nibble = Skip_IE(tree, bufptr, nibble, len, tvb); + break; + case 0x07: + /* 8.4.5.3.21 HARQ_DL_MAP_IE */ + nibble += HARQ_DL_MAP_IE(tree, bufptr, nibble, len, tvb); + break; + case 0x08: + /* 8.4.5.3.22 HARQ_ACK IE */ + nibble = HARQ_ACK_IE(tree, bufptr, nibble, len, tvb); + break; + case 0x09: + /* 8.4.5.3.23 Enhanced DL MAP IE */ + nibble = Enhanced_DL_MAP_IE(tree, bufptr, nibble, len, tvb); + break; + case 0x0a: + /* 8.4.5.3.24 Closed-loop MIMO DL Enhanced IE */ + nibble = Closed_loop_MIMO_DL_Enhanced_IE(tree, bufptr, nibble, len, tvb); + break; + case 0x0b: + nibble = MIMO_DL_Basic_IE(tree, bufptr, nibble, len, tvb); + break; + case 0x0c: + nibble = MIMO_DL_Enhanced_IE(tree, bufptr, nibble, len, tvb); + break; + + case 0x0e: + nibble = AAS_SDMA_DL_IE(tree, bufptr, nibble, len, tvb); + break; + + default: + proto_tree_add_text(tree, tvb, NIBHI(nibble,len), "(reserved Extended-2 DIUC: %d)", ext2_diuc); + nibble += len; + break; + + } + } + else if (diuc == 15) + { + /* 8.4.5.3.2.1 [1] Extended DIUC dependent IE - table 277 */ + ext_diuc = NIB_NIBBLE(1+nibble, bufptr); + len = NIB_NIBBLE(1+nibble+1, bufptr); + + ti = proto_tree_add_uint(ie_tree, hf_dlmap_ie_diuc, tvb, NIBHI(nibble, 1+2+len*2), diuc); + proto_item_append_text(ti, " (Extended)"); + tree = proto_item_add_subtree(ti, ett_277); + nibble++; + + len = 2 + BYTE_TO_NIB(len); + + /* TODO 8.4.5.3.27 PUSC_ASCA_IE -- unspecified ExtDIUC? */ + + /* 8.4.5.3.2.1 table 277a */ + switch (ext_diuc) + { + case 0x00: + /* 8.4.5.3.? Channel_Measurement_IE */ + nibble = Channel_Measurement_IE(tree, bufptr, nibble, len, tvb); + break; + case 0x01: + /* 8.4.5.3.4 STC_Zone_IE */ + nibble = STC_Zone_IE(tree, bufptr, nibble, len, tvb); + break; + case 0x02: + /* 8.4.5.3.3 AAS_DL_IE */ + nibble = AAS_DL_IE(tree, bufptr, nibble, len, tvb); + break; + case 0x03: + /* 8.4.5.3.6 Data_location_in_another_BS_IE */ + nibble = Data_location_in_another_BS_IE(tree, bufptr, nibble, len, tvb); + break; + case 0x04: + /* 8.4.5.3.7 CID_Switch_IE */ + nibble = CID_Switch_IE(tree, bufptr, nibble, len, tvb); + break; + case 0x07: + /* 8.4.5.3.10 HARQ_Map_Pointer_IE */ + nibble = HARQ_Map_Pointer_IE(tree, bufptr, nibble, len, tvb); + break; + case 0x08: + /* 8.4.5.3.11 PHYMOD_DL_IE */ + nibble = PHYMOD_DL_IE(tree, bufptr, nibble, len, tvb); + break; + + case 0x0b: + /* 8.4.5.3.13 DL PUSC Burst Allocation in Other Segment IE */ + nibble = DL_PUSC_Burst_Allocation_in_Other_Segment_IE(tree, bufptr, nibble, len, tvb); + break; + case 0x0c: + nibble = PUSC_ASCA_Alloc_IE(tree, bufptr, nibble, len, tvb); + break; + + case 0x0f: + /* 8.4.5.3.19 UL_interference_and_noise_level_IE */ + nibble = UL_interference_and_noise_level_IE(tree, bufptr, nibble, len, tvb); + break; + + default: + proto_tree_add_text(tree, tvb, NIBHI(nibble,len), "(reserved Extended DIUC: %d)", ext_diuc); + nibble += len; + break; + } + } + else + { + /* Downlink IE */ + alt_format = 0; + data = 0; + papr = 0; + ie_len = 9; + + /* TODO: alt_format = 1 if (Permutation == 0x11) and (AMC type is 2x3 or 1x6) */ + + /* precalculate IE len for correct highlighting */ + if (INC_CID && !sub_dl_ul_map) { + ie_len += 2 + (NIB_BYTE(nibble+1, bufptr) * 4); + } + + /* DL-MAP_IE */ + ti = proto_tree_add_uint(ie_tree, hf_dlmap_ie_diuc, tvb, NIBHI(nibble, ie_len), diuc); + tree = proto_item_add_subtree(ti, ett_275_1); + nibble += 1; + + if (diuc == 13) { + /* 8.4.5.3.1 [1] Gap/PAPR Reduction */ + papr = 1; + proto_item_append_text(ti, " (Gap/PAPR Reduction)"); + } + + + if (INC_CID) + { + n_cid = NIB_BYTE(nibble, bufptr); + proto_tree_add_item(tree, hf_dlmap_ie_ncid, tvb, NIBHI(nibble,2), FALSE); + nibble += 2; + + for (i = 0; i < n_cid; i++) + { + if (sub_dl_ul_map) { + /* RCID_IE 8.4.5.3 and 8.4.5.3.20.1, only part of SUB-DL-UL-MAP */ + /* RCID_Type comes from 6.3.2.3.43.2 [2] Format_configuration_IE in Compact_DL-MAP_IE */ + nibble += RCID_IE(tree, bufptr, nibble*4, length, tvb, RCID_Type) / 4; + } else { + proto_tree_add_item(tree, hf_dlmap_ie_cid, tvb, NIBHI(nibble,4), FALSE); + nibble += 4; + } + } + } + + data = NIB_LONG(nibble, bufptr); + if (alt_format) { + proto_tree_add_uint(tree, hf_dlmap_ie_offsym2, tvb, NIBHI(nibble, 8), data); + proto_tree_add_uint(tree, hf_dlmap_ie_offsub2, tvb, NIBHI(nibble, 8), data); + proto_tree_add_uint(tree, hf_dlmap_ie_boosting2, tvb, NIBHI(nibble, 8), data); + proto_tree_add_uint(tree, hf_dlmap_ie_numsym2, tvb, NIBHI(nibble, 8), data); + proto_tree_add_uint(tree, hf_dlmap_ie_numsub2, tvb, NIBHI(nibble, 8), data); + proto_tree_add_uint(tree, hf_dlmap_ie_rep2, tvb, NIBHI(nibble, 8), data); + } else { + proto_tree_add_uint(tree, hf_dlmap_ie_offsym, tvb, NIBHI(nibble, 8), data); + proto_tree_add_uint(tree, hf_dlmap_ie_offsub, tvb, NIBHI(nibble, 8), data); + proto_tree_add_uint(tree, hf_dlmap_ie_boosting, tvb, NIBHI(nibble, 8), data); + proto_tree_add_uint(tree, hf_dlmap_ie_numsym, tvb, NIBHI(nibble, 8), data); + proto_tree_add_uint(tree, hf_dlmap_ie_numsub, tvb, NIBHI(nibble, 8), data); + proto_tree_add_uint(tree, hf_dlmap_ie_rep, tvb, NIBHI(nibble, 8), data); + } + nibble += 8; + } + + /* length in nibbles */ + return (nibble - offset); +} + + +void dissect_mac_mgmt_msg_dlmap_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *base_tree) +{ + /* 6.3.2.3.2 [2] DL-MAP table 16 */ + guint offset = 0; + gint length, nib, pad; + proto_item *ti = NULL; + proto_tree *dlmap_tree = NULL; + proto_tree *ie_tree = NULL; + proto_tree *phy_tree = NULL; + gint tvb_len = tvb_length(tvb); + const guint8 *bufptr = tvb_get_ptr(tvb, offset, tvb_len); + + UNREFERENCED_PARAMETER(pinfo); + + INC_CID = 0; + + /* add protocol */ + ti = proto_tree_add_protocol_format(base_tree, proto_mac_mgmt_msg_dlmap_decoder, tvb, offset, tvb_len, "DL-MAP (%u bytes)", tvb_len); + dlmap_tree = proto_item_add_subtree(ti, ett_dlmap); + + /* Decode and display the DL-MAP */ + proto_tree_add_item(dlmap_tree, hf_dlmap_message_type, tvb, offset, 1, FALSE); + offset++; + /* PHY Synchronization Field 8.4.5.1 */ + { + ti = proto_tree_add_text(dlmap_tree, tvb, offset, 4, "Phy Synchronization Field"); + phy_tree = proto_item_add_subtree(ti, ett_275_phy); + proto_tree_add_item(phy_tree, hf_dlmap_phy_fdur, tvb, offset, 1, FALSE); + offset++; + proto_tree_add_item(phy_tree, hf_dlmap_phy_fnum, tvb, offset, 3, FALSE); + offset += 3; + } + proto_tree_add_item(dlmap_tree, hf_dlmap_dcd, tvb, offset, 1, FALSE); + offset++; + proto_tree_add_item(dlmap_tree, hf_dlmap_bsid, tvb, offset, 6, FALSE); + offset += 6; + proto_tree_add_item(dlmap_tree, hf_dlmap_ofdma_sym, tvb, offset, 1, FALSE); + offset++; + + /* DL-MAP IEs */ + length = tvb_len - offset; /* remaining length in bytes */ + ti = proto_tree_add_text(dlmap_tree, tvb, offset, length, "DL-MAP IEs (%d bytes)", length); + ie_tree = proto_item_add_subtree(ti, ett_dlmap_ie); + + length = BYTE_TO_NIB(length); /* convert length to nibbles */ + + nib = BYTE_TO_NIB(offset); + while (nib < ((tvb_len*2)-1)) { + nib += dissect_dlmap_ie(ie_tree, bufptr, nib, tvb_len * 2, tvb); + } + pad = NIB_PADDING(nib); + if (pad) { + proto_tree_add_text(dlmap_tree, tvb, NIBHI(nib,1), "Padding nibble"); + nib++; + } +} + +gint wimax_decode_dlmapc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *base_tree) +{ + /* 8.4.5.6.1 [2] Compressed DL-MAP */ + /* decode a compressed dl-map and return the length in bytes; */ + /* if there is a compressed ul-map, also decode that and include in the length */ + guint offset = 0; + proto_item *ti = NULL; + proto_item *generic_item = NULL; + proto_tree *tree = NULL; + proto_tree *ie_tree = NULL; + gint ulmap_appended; + guint length, lennib, pad; + guint mac_len, dl_ie_count; + guint tvb_len = tvb_length(tvb); + const guint8 * bufptr = tvb_get_ptr(tvb, offset, tvb_len); + guint nib = 0; + guint32 mac_crc, calculated_crc; + + /* update the info column */ + if (check_col(pinfo->cinfo, COL_INFO)) + { + col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "Compressed DL-MAP"); + } + + INC_CID = 0; + + length = tvb_get_ntohs(tvb, offset) & 0x07FF; /* compressed map length is 11 bits */ + mac_len = length; + lennib = BYTE_TO_NIB(length); + + ulmap_appended = (tvb_get_guint8(tvb, offset) >> 4) & 1; /* UL MAP appended? */ + + /* display MAC Compressed DL-MAP and create subtree */ + ti = proto_tree_add_protocol_format(base_tree, proto_mac_mgmt_msg_dlmap_decoder, tvb, offset, length, "Compressed DL-MAP (%u bytes)", length); + tree = proto_item_add_subtree(ti, ett_305); + + /* decode dlmap fields */ + proto_tree_add_item(tree, hf_dlmapc_compr, tvb, offset, 2, FALSE); + proto_tree_add_item(tree, hf_dlmapc_ulmap, tvb, offset, 2, FALSE); + proto_tree_add_item(tree, hf_dlmapc_rsv, tvb, offset, 2, FALSE); + proto_tree_add_item(tree, hf_dlmapc_len, tvb, offset, 2, FALSE); + proto_tree_add_item(tree, hf_dlmapc_sync, tvb, offset+2, 4, FALSE); /* PHY Synchronization (8.4.5.1) */ + proto_tree_add_item(tree, hf_dlmap_dcd, tvb, offset+6, 1, FALSE); + proto_tree_add_item(tree, hf_dlmapc_opid, tvb, offset+7, 1, FALSE); + proto_tree_add_item(tree, hf_dlmapc_secid, tvb, offset+8, 1, FALSE); + proto_tree_add_item(tree, hf_dlmap_ofdma_sym, tvb, offset+9, 1, FALSE); /* 2005 */ + proto_tree_add_item(tree, hf_dlmapc_count, tvb, offset+10,1, FALSE); + dl_ie_count = tvb_get_guint8(tvb, offset + 10); + offset += 11; + nib = BYTE_TO_NIB(offset); + + /* DL-MAP IEs */ + length -= 15; /* remaining length in bytes (11 bytes above + CRC at end) */ + if (dl_ie_count) { + ti = proto_tree_add_text(tree, tvb, offset, length, "DL-MAP IEs (%d bytes)", length); + ie_tree = proto_item_add_subtree(ti, ett_dlmap_ie); + + length = BYTE_TO_NIB(mac_len - sizeof(mac_crc) - 1); /* convert length to nibbles */ + + while (nib < length) { + nib += dissect_dlmap_ie(ie_tree, bufptr, nib, tvb_len * 2, tvb); + } + pad = NIB_PADDING(nib); + if (pad) { + proto_tree_add_text(tree, tvb, NIBHI(nib,1), "Padding nibble"); + nib++; + } + } + + if (ulmap_appended) { + /* subtract 8 from lennib (CRC) */ + nib += wimax_decode_ulmapc(base_tree, bufptr, nib, lennib - 8, tvb); + } + + /* CRC is always appended */ + /* check the length */ + if (MIN(tvb_len, tvb_reported_length(tvb)) >= mac_len) + { /* get the CRC */ + mac_crc = tvb_get_ntohl(tvb, mac_len - sizeof(mac_crc)); + /* calculate the CRC */ + calculated_crc = wimax_mac_calc_crc32((guint8 *)tvb_get_ptr(tvb, 0, mac_len - sizeof(mac_crc)), mac_len - sizeof(mac_crc)); + /* display the CRC */ + generic_item = proto_tree_add_item(base_tree, hf_mac_header_compress_dlmap_crc, tvb, mac_len - sizeof(mac_crc), sizeof(mac_crc), FALSE); + if (mac_crc != calculated_crc) + { + proto_item_append_text(generic_item, " - incorrect! (should be: 0x%x)", calculated_crc); + } + } + else + { /* display error message */ + proto_tree_add_protocol_format(base_tree, proto_mac_mgmt_msg_dlmap_decoder, tvb, 0, tvb_len, "CRC missing - the frame is too short (%u bytes)", tvb_len); + } + + return mac_len; +} + +extern gint dissect_ulmap_ie(proto_tree *ie_tree, + const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb); +extern gint wimax_decode_ulmap_reduced_aas(proto_tree *ie_tree, + const guint8 *bufptr, gint offset, gint length, tvbuff_t *tvb); + +gint wimax_decode_sub_dl_ul_map(tvbuff_t *tvb, packet_info *pinfo, proto_tree *base_tree) +{ + /* decode a SUB-DL-UL-MAP message 6.3.2.3.60 and return the length in bytes */ + /* first three bits are 0x7, which following a compressed DL map indicates this message */ + guint offset = 0; + proto_item *ti = NULL; + proto_tree *tree = NULL; + proto_tree *ie_tree = NULL; + proto_item *generic_item = NULL; + gint data; + gint i, numie; + guint16 calculated_crc; + + gint length = tvb_length(tvb); + const guint8 * bufptr = tvb_get_ptr(tvb, offset, length); + gint nib = 0; + gint lennib = BYTE_TO_NIB(length); + + UNREFERENCED_PARAMETER(pinfo); + + sub_dl_ul_map = 1; /* set flag */ + + ti = proto_tree_add_text(base_tree, tvb, NIBHI(nib,lennib-nib), "SUB-DL-UL-MAP"); + tree = proto_item_add_subtree(ti, ett_109x); + + data = NIB_WORD(nib,bufptr); + proto_tree_add_uint(tree, hf_109x_cmi, tvb, NIBHI(nib,4), data); + proto_tree_add_uint(tree, hf_109x_len, tvb, NIBHI(nib,4), data); + proto_tree_add_uint(tree, hf_109x_rcid, tvb, NIBHI(nib,4), data); + proto_tree_add_uint(tree, hf_109x_haoi, tvb, NIBHI(nib,4), data); + nib += 4; + + /* HARQ ACK offset indicator */ + if (data & 1) { + data = NIB_BYTE(nib,bufptr); + proto_tree_add_uint(tree, hf_109x_dl, tvb, NIBHI(nib,2), data); + nib += 2; + data = NIB_BYTE(nib,bufptr); + proto_tree_add_uint(tree, hf_109x_ul, tvb, NIBHI(nib,2), data); + nib += 2; + } + + numie = NIB_BYTE(nib,bufptr); + proto_tree_add_uint(tree, hf_109x_dlie, tvb, NIBHI(nib,2), numie); + nib += 2; + + /* DL-MAP IEs */ + ti = proto_tree_add_text(tree, tvb, NIBHI(nib,1), "DL-MAP IEs"); + ie_tree = proto_item_add_subtree(ti, ett_109x_dl); + for (i = 0; i < numie; i++) { + nib += dissect_dlmap_ie(ie_tree, bufptr, nib, lennib - nib, tvb); + } + + data = NIB_BYTE(nib,bufptr); + proto_tree_add_uint(tree, hf_109x_symofs, tvb, NIBHI(nib,2), data); + nib += 2; + data = NIB_BYTE(nib,bufptr); + proto_tree_add_uint(tree, hf_109x_subofs, tvb, NIBHI(nib,2), data); + proto_tree_add_uint(tree, hf_109x_rsv, tvb, NIBHI(nib,2), data); + nib += 2; + + /* UL-MAP IEs */ + ti = proto_tree_add_text(tree, tvb, NIBHI(nib,lennib-nib), "UL-MAP IEs"); + ie_tree = proto_item_add_subtree(ti, ett_109x_ul); + for ( ; nib < lennib - 1; ) { + nib += dissect_ulmap_ie(ie_tree, bufptr, nib, lennib - nib, tvb); + } + + /* padding */ + if (nib & 1) { + proto_tree_add_text(tree, tvb, NIBHI(nib,1), "Padding Nibble"); + nib++; + } + + /* CRC-16 is always appended */ + data = NIB_WORD(nib, bufptr); + generic_item = proto_tree_add_text(tree, tvb, NIBHI(nib,4), "CRC-16: 0x%04x",data); + /* calculate the CRC */ + calculated_crc = wimax_mac_calc_crc16((guint8 *)tvb_get_ptr(tvb, 0, NIB_TO_BYTE(nib)), NIB_TO_BYTE(nib)); + if (data != calculated_crc) + { + proto_item_append_text(generic_item, " - incorrect! (should be: 0x%x)", calculated_crc); + } + nib += 4; + + + sub_dl_ul_map = 0; /* clear flag */ + /* return length */ + return length; +} + +gint wimax_decode_dlmap_reduced_aas(tvbuff_t *tvb, packet_info *pinfo, proto_tree *base_tree) +{ + /* 8.4.5.8.1 [2] Reduced AAS private DL-MAP */ + /* if there is an appended UL-MAP, also decode that */ + guint offset = 0; + proto_item *ti = NULL; + proto_tree *tree = NULL; + proto_item *generic_item = NULL; + gint ulmap_appended; + gint length; + gint tvb_len = tvb_length(tvb); + const guint8 * bufptr = tvb_get_ptr(tvb, offset, tvb_len); + gint bit = 0; + guint data, pad, mult; + gint numie = 1; + gint i; + guint16 calculated_crc; + gint smcs,cidi,dcdi,phyi,cqci; + + UNREFERENCED_PARAMETER(pinfo); + length = tvb_len; + + /* display MAC Reduced_AAS_Private_DL-MAP and create subtree */ + ti = proto_tree_add_protocol_format(base_tree, proto_mac_mgmt_msg_dlmap_decoder, tvb, offset, length, "Reduced_AAS_Private_DL-MAP"); + tree = proto_item_add_subtree(ti, ett_308a); + + VBIT(data, 3, hf_308a_cmi); + VBIT(ulmap_appended, 1, hf_308a_ulmap); + VBIT(data, 2, hf_308a_type); + VBIT(mult, 1, hf_308a_mult); + VBIT(data, 1, hf_308a_rsv); + + if (mult) { + XBIT(numie, 8, "NUM IE"); + } + + for (i = 0; i < numie; i++) { + XBIT(data, 2, "Periodicity"); + XBIT(cidi, 1, "CID Included"); + XBIT(dcdi, 1, "DCD Count Included"); + XBIT(phyi, 1, "PHY modification included"); + XBIT(cqci, 1, "CQICH control indicator"); + XBIT(data, 2, "Encoding Mode"); + XBIT(smcs, 1, "Separate MCS Enabled"); + + if (smcs) { + XBIT(data,10, "Duration"); + XBIT(data, 4, "DIUC"); + XBIT(data, 2, "Repetition Coding Indication"); + } + if (cidi) { + XBIT(data,16, "CID"); + } + if (cqci) { + XBIT(data, 6, "Allocation Index"); + XBIT(data, 3, "Report Period"); + XBIT(data, 3, "Frame Offset"); + XBIT(data, 4, "Report Duration"); + XBIT(data, 2, "CQI Measurement Type"); + XBIT(data, 2, "Reserved"); + } + if (dcdi) { + XBIT(data, 8, "DCD Count"); + } + if (phyi) { + XBIT(data, 1, "Preamble Select"); + XBIT(data, 4, "Preamble Shift Index"); + XBIT(data, 1, "Pilot Pattern Modifier"); + XBIT(data, 2, "Pilot Pattern Index"); + } + XBIT(data, 3, "DL Frame Offset"); + if (fusc) { + XBIT(data, 8, "Zone Symbol Offset"); + } + XBIT(data, 8, "OFDMA Symbol Offset"); + if (tusc) { + XBIT(data, 8, "Subchannel Offset"); + XBIT(data, 5, "No. OFDMA triple symbol"); + XBIT(data, 6, "No. subchannels"); + } else { + XBIT(data, 6, "Subchannel Offset"); + XBIT(data, 7, "No. OFDMA symbols"); + XBIT(data, 6, "No. subchannels"); + } + XBIT(data, 4, "DIUC/N(EP)"); + if (harq) { + XBIT(data, 1, "DL HARQ ACK bitmap"); + XBIT(data, 6, "ACK Allocation Index"); + XBIT(data, 4, "ACID"); + XBIT(data, 1, "AI_SN"); + if (ir_type) { + XBIT(data, 4, "N(SCH)"); + XBIT(data, 2, "SPID"); + XBIT(data, 2, "Reserved"); + } + } + XBIT(data, 2, "Repetition Coding Indication"); + if (ulmap_appended) { + /* offset and length are in bits */ + bit += wimax_decode_ulmap_reduced_aas(tree, bufptr, offset, length*8, tvb); + } + XBIT(data, 3, "Reserved"); + } + + /* padding */ + pad = BIT_PADDING(bit,8); + if (pad) { + proto_tree_add_text(tree, tvb, BITHI(bit,pad), "Padding: %d bits",pad); + bit += pad; + } + + /* CRC-16 is always appended */ + data = BIT_BITS(bit, bufptr, 16); + generic_item = proto_tree_add_text(tree, tvb, BITHI(bit,16), "CRC-16: 0x%04x",data); + /* calculate the CRC */ + calculated_crc = wimax_mac_calc_crc16((guint8 *)tvb_get_ptr(tvb, 0, BIT_TO_BYTE(bit)), BIT_TO_BYTE(bit)); + if (data != calculated_crc) + { + proto_item_append_text(generic_item, " - incorrect! (should be: 0x%x)", calculated_crc); + } + bit += 16; + + return BIT_TO_BYTE(bit) - offset; +} |