/* mac_hd_generic_decoder.c
* WiMax Generic MAC Header decoder
*
* Copyright (c) 2007 by Intel Corporation.
*
* Author: Lu Pan <lu.pan@intel.com>
*
* $Id: mac_hd_generic_decoder.c 23661 2007-11-28 23:22:38Z gerald $
*
* 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.
*/
/* TODO: Add FT_UINT24 and FT_INT24 cases to gtk_widget_get_toplevel()
* to prevent having to make all the changes from BASE_DEC to BASE_HEX
* made to this file today: 10/20/06.
*/
/* Include files */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/*
#define DEBUG
*/
#include "moduleinfo.h"
#include <string.h>
#include <glib.h>
#include <epan/packet.h>
#include <epan/prefs.h>
#include <epan/address.h>
#include <epan/reassemble.h>
#include "crc.h"
extern gint proto_wimax;
extern gint seen_a_service_type;
extern gboolean first_gmh; /* defined in wimax_pdu_decoder.c */
guint get_service_type( void ); /* defined in wimax_utils.c */
extern gint8 arq_enabled; /* declared in packet-wmx.c */
extern gint scheduling_service_type; /* declared in packet-wmx.c */
extern gint mac_sdu_length; /* declared in packet-wmx.c */
extern address bs_address; /* declared in packet-wmx.c */
extern guint max_logical_bands; /* declared in wimax_compact_dlmap_ie_decoder.c */
extern gboolean is_down_link(address *src_address);/* declared in packet-wmx.c */
extern void proto_register_mac_mgmt_msg(void); /* defined in macmgmtmsgdecoder.c */
extern void init_wimax_globals(); /* defined in msg_ulmap.c */
extern void dissect_mac_mgmt_msg_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
/* global variables */
gboolean include_cor2_changes = FALSE;
/* Well-known CIDs */
guint cid_initial_ranging = 0x0000;
guint global_cid_max_basic = 320;
guint cid_max_primary = 640;
guint cid_aas_ranging = 0xFeFF;
guint cid_normal_multicast = 0xFFFa;
guint cid_sleep_multicast = 0xFFFb;
guint cid_idle_multicast = 0xFFFc;
guint cid_frag_broadcast = 0xFFFd;
guint cid_padding = 0xFFFe;
guint cid_broadcast = 0xFFFF;
/* Maximum number of CID's */
#define MAX_CID 64
/* forward reference */
void dissect_mac_header_generic_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
static gint extended_subheader_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
static gint arq_feedback_payload_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_item *parent_item);
/* Static variables */
static GHashTable *payload_frag_table = NULL;
gint proto_mac_header_generic_decoder = -1;
static gint ett_mac_header_generic_decoder = -1;
static gint ett_mac_subheader_decoder = -1;
static gint ett_mac_mesh_subheader_decoder = -1;
static gint ett_mac_frag_subheader_decoder = -1;
static gint ett_mac_grant_mgmt_subheader_decoder = -1;
static gint ett_mac_pkt_subheader_decoder = -1;
static gint ett_mac_fast_fb_subheader_decoder = -1;
static gint ett_mac_ext_subheader_decoder = -1;
static gint ett_mac_ext_subheader_dl_decoder = -1;
static gint ett_mac_ext_subheader_ul_decoder = -1;
static gint ett_mac_arq_fb_payload_decoder = -1;
static gint ett_mac_data_pdu_decoder = -1;
static gint hf_mac_header_generic_value_bytes = -1;
static guint frag_type, frag_len;
static guint extended_type, arq_fb_payload, seq_number;
static guint cid_adjust[MAX_CID]; /* Must not start with 0 */
static guint cid_vernier[MAX_CID];
static guint cid_adj_array_size = 0;
static guint *cid_adj_array = NULL;
static guint8 *frag_num_array = NULL;
static address save_src;
static address save_dst;
/* Setup protocol subtree array */
static gint *ett[] =
{
&ett_mac_header_generic_decoder,
&ett_mac_subheader_decoder,
&ett_mac_mesh_subheader_decoder,
&ett_mac_frag_subheader_decoder,
&ett_mac_grant_mgmt_subheader_decoder,
&ett_mac_pkt_subheader_decoder,
&ett_mac_fast_fb_subheader_decoder,
&ett_mac_ext_subheader_decoder,
&ett_mac_ext_subheader_dl_decoder,
&ett_mac_ext_subheader_ul_decoder,
&ett_mac_arq_fb_payload_decoder,
&ett_mac_data_pdu_decoder,
};
#define WIMAX_MAC_HEADER_SIZE 6
#define IP_HEADER_BYTE 0x45
#define EXTENDED_SUB_HEADER_RSV_MASK 0x80
#define EXTENDED_SUB_HEADER_TYPE_MASK 0x7F
/* WIMAX GENERIC MAC HEADER FIELDS (figure 19) */
/* 1st to 3rd bytes */
#define WIMAX_MAC_HEADER_GENERIC_HT 0x800000
#define WIMAX_MAC_HEADER_GENERIC_EC 0x400000
#define WIMAX_MAC_HEADER_GENERIC_TYPE_5 0x200000
#define WIMAX_MAC_HEADER_GENERIC_TYPE_4 0x100000
#define WIMAX_MAC_HEADER_GENERIC_TYPE_3 0x080000
#define WIMAX_MAC_HEADER_GENERIC_TYPE_2 0x040000
#define WIMAX_MAC_HEADER_GENERIC_TYPE_1 0x020000
#define WIMAX_MAC_HEADER_GENERIC_TYPE_0 0x010000
#define WIMAX_MAC_HEADER_GENERIC_ESF 0x008000
#define WIMAX_MAC_HEADER_GENERIC_CI 0x004000
#define WIMAX_MAC_HEADER_GENERIC_EKS 0x003000
#define WIMAX_MAC_HEADER_GENERIC_RSV 0x000800
#define WIMAX_MAC_HEADER_GENERIC_LEN 0x0007FF
/* WIMAX GENERIC MAC HEADER 1st byte masks */
#define WIMAX_MAC_HEADER_GENERIC_HT_MASK 0x80
#define WIMAX_MAC_HEADER_GENERIC_EC_MASK 0x40
#define WIMAX_MAC_HEADER_GENERIC_TYPE_MASK 0x3F
/* WiMax Generic MAC Header Sub Type Masks */
#define GENERIC_SUB_TYPE_0 0x01
#define GENERIC_SUB_TYPE_1 0x02
#define GENERIC_SUB_TYPE_2 0x04
#define GENERIC_SUB_TYPE_3 0x08
#define GENERIC_SUB_TYPE_4 0x10
#define GENERIC_SUB_TYPE_5 0x20
/* WIMAX GENERIC MAC HEADER 2nd byte masks */
#define WIMAX_MAC_HEADER_GENERIC_ESF_MASK 0x80
#define WIMAX_MAC_HEADER_GENERIC_CI_MASK 0x40
#define WIMAX_MAC_HEADER_GENERIC_EKS_MASK 0x30
#define WIMAX_MAC_HEADER_GENERIC_LEN_MASK 0x07
static int hf_mac_header_generic_ht = -1;
static int hf_mac_header_generic_ec = -1;
static int hf_mac_header_generic_type_0 = -1;
static int hf_mac_header_generic_type_1 = -1;
static int hf_mac_header_generic_type_2 = -1;
static int hf_mac_header_generic_type_3 = -1;
static int hf_mac_header_generic_type_4 = -1;
static int hf_mac_header_generic_type_5 = -1;
static int hf_mac_header_generic_esf = -1;
static int hf_mac_header_generic_ci = -1;
static int hf_mac_header_generic_eks = -1;
static int hf_mac_header_generic_rsv = -1;
static int hf_mac_header_generic_len = -1;
static int hf_mac_header_generic_cid = -1;
static int hf_mac_header_generic_hcs = -1;
static int hf_mac_header_generic_crc = -1;
/* MAC Header types */
static const value_string ht_msgs[] =
{
{ 0, "Generic" },
{ 1, "Signaling" },
{ 0, NULL}
};
/* Encryption Controls */
static const value_string ec_msgs[] =
{
{ 0, "Not encrypted" },
{ 1, "Encrypted" },
{ 0, NULL}
};
/* ESF messages */
static const value_string esf_msgs[] =
{
{ 0, "Extended subheader is absent" },
{ 1, "Extended subheader is present" },
{ 0, NULL}
};
/* CRC Indicator messages */
static const value_string ci_msgs[] =
{
{ 0, "No CRC is included" },
{ 1, "CRC is included" },
{ 0, NULL}
};
/* Sub-Type message 0 */
static const value_string type_msg0[] =
{
{ 0, "Fast-feedback allocation subheader(DL)/Grant management subheader(UL) is absent" },
{ 1, "Fast-feedback allocation subheader(DL)/Grant management subheader(UL) is present" },
{ 0, NULL}
};
/* Sub-Type message 1 */
static const value_string type_msg1[] =
{
{ 0, "Packing subheader is absent" },
{ 1, "Packing Subheader is present" },
{ 0, NULL}
};
/* Sub-Type message 2 */
static const value_string type_msg2[] =
{
{ 0, "Fragmentation subheader is absent" },
{ 1, "Fragmentation subheader is present" },
{ 0, NULL}
};
/* Sub-Type message 3 */
static const value_string type_msg3[] =
{
{ 0, "The subheader is not extended" },
{ 1, "The subheader is extended" },
{ 0, NULL}
};
/* Sub-Type message 4 */
static const value_string type_msg4[] =
{
{ 0, "ARQ feedback payload is absent" },
{ 1, "ARQ feedback payload is present" },
{ 0, NULL}
};
/* Sub-Type message 5 */
static const value_string type_msg5[] =
{
{ 0, "Mesh subheader is absent" },
{ 1, "Mesh subheader is present" },
{ 0, NULL}
};
/* Fast-Feedback Feedback Types */
static const value_string fast_fb_types[] =
{
{ 0, "Fast DL measurement" },
{ 1, "Fast MIMO Feedback, Antenna #0" },
{ 2, "Fast MIMO Feedback, Antenna #1" },
{ 3, "MIMO Mode and Permutation Mode Feedback" },
{ 0, NULL}
};
/* Generic MAC header display */
static hf_register_info hf[] =
{
{
&hf_mac_header_generic_value_bytes,
{
"Values", "wmx.genericValueBytes",
FT_BYTES, BASE_HEX, NULL, 0x0,
"", HFILL
}
},
{
&hf_mac_header_generic_ht,
{
"MAC Header Type", "wmx.genericHt",
FT_UINT24, BASE_HEX, VALS(ht_msgs), WIMAX_MAC_HEADER_GENERIC_HT,
"", HFILL
}
},
{
&hf_mac_header_generic_ec,
{
"MAC Encryption Control", "wmx.genericEc",
FT_UINT24, BASE_HEX, VALS(ec_msgs), WIMAX_MAC_HEADER_GENERIC_EC,
"", HFILL
}
},
{
&hf_mac_header_generic_type_0,
{
"MAC Sub-type Bit 0", "wmx.genericType0",
FT_UINT24, BASE_HEX, VALS(type_msg0), WIMAX_MAC_HEADER_GENERIC_TYPE_0,
"", HFILL
}
},
{
&hf_mac_header_generic_type_1,
{
"MAC Sub-type Bit 1", "wmx.genericType1",
FT_UINT24, BASE_HEX, VALS(type_msg1), WIMAX_MAC_HEADER_GENERIC_TYPE_1,
"", HFILL
}
},
{
&hf_mac_header_generic_type_2,
{
"MAC Sub-type Bit 2", "wmx.genericType2",
FT_UINT24, BASE_HEX, VALS(type_msg2), WIMAX_MAC_HEADER_GENERIC_TYPE_2,
"", HFILL
}
},
{
&hf_mac_header_generic_type_3,
{
"MAC Sub-type Bit 3", "wmx.genericType3",
FT_UINT24, BASE_HEX, VALS(type_msg3), WIMAX_MAC_HEADER_GENERIC_TYPE_3,
"", HFILL
}
},
{
&hf_mac_header_generic_type_4,
{
"MAC Sub-type Bit 4", "wmx.genericType4",
FT_UINT24, BASE_HEX, VALS(type_msg4), WIMAX_MAC_HEADER_GENERIC_TYPE_4,
"", HFILL
}
},
{
&hf_mac_header_generic_type_5,
{
"MAC Sub-type Bit 5", "wmx.genericType5",
FT_UINT24, BASE_HEX, VALS(type_msg5), WIMAX_MAC_HEADER_GENERIC_TYPE_5,
"", HFILL
}
},
{
&hf_mac_header_generic_esf,
{
"Extended Sub-header Field", "wmx.genericEsf",
FT_UINT24, BASE_HEX, VALS(esf_msgs), WIMAX_MAC_HEADER_GENERIC_ESF,
"", HFILL
}
},
{
&hf_mac_header_generic_ci,
{
"CRC Indicator", "wmx.genericCi",
FT_UINT24, BASE_HEX, VALS(ci_msgs), WIMAX_MAC_HEADER_GENERIC_CI,
"", HFILL
}
},
{
&hf_mac_header_generic_eks,
{
"Encryption Key Sequence", "wmx.genericEks",
FT_UINT24, BASE_HEX, NULL, WIMAX_MAC_HEADER_GENERIC_EKS,
"", HFILL
}
},
{
&hf_mac_header_generic_rsv,
{
"Reserved", "wmx.genericRsv",
FT_UINT24, BASE_DEC, NULL, WIMAX_MAC_HEADER_GENERIC_RSV,
"", HFILL
}
},
{
&hf_mac_header_generic_len,
{
"Length", "wmx.genericLen",
FT_UINT24, BASE_DEC, NULL, WIMAX_MAC_HEADER_GENERIC_LEN,
"", HFILL
}
},
{
&hf_mac_header_generic_cid,
{
"Connection ID", "wmx.genericCid",
FT_UINT16, BASE_DEC, NULL, 0x0,
"", HFILL
}
},
{
&hf_mac_header_generic_hcs,
{
"Header Check Sequence", "wmx.genericHcs",
FT_UINT8, BASE_HEX, NULL, 0x0,
"", HFILL
}
},
{
&hf_mac_header_generic_crc,
{
"CRC", "wmx.genericCrc",
FT_UINT32, BASE_HEX, NULL, 0x0,
"", HFILL
}
}
};
/* Extended sub-headers */
/* DL sub-header types */
enum
{
SDU_SN,
DL_SLEEP_CONTROL,
FEEDBACK_REQ,
SN_REQ,
PDU_SN_SHORT_DL,
PDU_SN_LONG_DL
} DL_EXT_SUBHEADER;
static const value_string dl_ext_sub_header_type[] =
{
{0, "SDU_SN"},
{1, "DL Sleep Control"},
{2, "Feedback Request"},
{3, "SN Request"},
{4, "PDU SN (short)"},
{5, "PDU SN (long)"},
{0, NULL}
};
/* DL Sleep Control Extended Subheader field masks (table 13e) */
#define DL_SLEEP_CONTROL_POWER_SAVING_CLASS_ID_MASK 0xFC0000 /*0x00003F*/
#define DL_SLEEP_CONTROL_OPERATION_MASK 0x020000 /*0x000040*/
#define DL_SLEEP_CONTROL_FINAL_SLEEP_WINDOW_EXPONENT_MASK 0x01C000 /*0x000380*/
#define DL_SLEEP_CONTROL_FINAL_SLEEP_WINDOW_BASE_MASK 0x003FF0 /*0x0FFC00*/
#define DL_SLEEP_CONTROL_RESERVED_MASK 0x00000F /*0xF00000*/
/* Feedback Request Extended Subheader field masks (table 13f) */
#define FEEDBACK_REQUEST_UIUC_MASK 0xF00000 /*0x00000F*/
#define FEEDBACK_REQUEST_FEEDBACK_TYPE_MASK 0x0F0000 /*0x0000F0*/
#define FEEDBACK_REQUEST_OFDMA_SYMBOL_OFFSET_MASK 0x00FC00 /*0x003F00*/
#define FEEDBACK_REQUEST_SUBCHANNEL_OFFSET_MASK 0x0003F0 /*0x0FC000*/
#define FEEDBACK_REQUEST_NUMBER_OF_SLOTS_MASK 0x00000E /*0x700000*/
#define FEEDBACK_REQUEST_FRAME_OFFSET_MASK 0x000001 /*0x800000*/
/* OFDMA UIUC Values ??? */
static const value_string uiuc_values[] =
{
{ 0, "Fast-Feedback Channel" },
{ 1, "Burst Profile 1" },
{ 2, "Burst Profile 2" },
{ 3, "Burst Profile 3" },
{ 4, "Burst Profile 4" },
{ 5, "Burst Profile 5" },
{ 6, "Burst Profile 6" },
{ 7, "Burst Profile 7" },
{ 8, "Burst Profile 8" },
{ 9, "Burst Profile 9" },
{ 10, "Burst Profile 10" },
{ 11, "Extended UIUC 2 IE" },
{ 12, "CDMA Bandwidth Request, CDMA Ranging" },
{ 13, "PAPR Reduction Allocation, Safety Zone" },
{ 14, "CDMA Allocation IE" },
{ 15, "Extended UIUC" },
{ 0, NULL}
};
/* UL sub-header types */
enum
{
MIMO_MODE_FEEDBACK,
UL_TX_POWER_REPORT,
MINI_FEEDBACK,
PDU_SN_SHORT_UL,
PDU_SN_LONG_UL
} UL_EXT_SUBHEADER;
static const value_string ul_ext_sub_header_type[] =
{
{0, "MIMO Mode Feedback"},
{1, "UL TX Power Report"},
{2, "Mini-feedback"},
{3, "PDU SN (short)"},
{4, "PDU SN (long)"},
{0, NULL}
};
/* MIMO Mode Feedback Extended Subheader field masks (table 13g) */
#define MIMO_FEEDBACK_TYPE_MASK 0xC0 /*0x03*/
#define MIMO_FEEDBACK_CONTENT_MASK 0x3F /*0xFC*/
/* Mimo Feedback Types ??? */
static const value_string mimo_fb_types[] =
{
{ 0, "Fast DL measurement" },
{ 1, "Default Feedback with Antenna Grouping" },
{ 2, "Antenna Selection and Reduced Codebook" },
{ 3, "Quantized Precoding Weight Feedback" },
{ 0, NULL}
};
/* MNI-Feedback Extended Subheader field masks (table 13i) */
#define MINI_FEEDBACK_TYPE_MASK 0xF000 /*0x000F*/
#define MINI_FEEDBACK_CONTENT_MASK 0x0FFF /*0xFFF0*/
/* Feedback Types */
static const value_string fb_types[] =
{
{ 0, "CQI and MIMO Feedback" },
{ 1, "DL average CINR" },
{ 2, "MIMO Coefficients Feedback" },
{ 3, "Preferred DL Channel DIUC Feedback" },
{ 4, "UL Transmission Power" },
{ 5, "PHY Channel Feedback" },
{ 6, "AMC Band Indication Bitmap" },
{ 7, "Life Span of Short-term Precoding Feedback" },
{ 8, "Multiple Types of Feedback" },
{ 9, "Long-term Precoding Feedback" },
{ 10, "Combined DL Average CINR of Active BSs" },
{ 11, "MIMO Channel Feedback" },
{ 12, "CINR Feedback" },
{ 13, "Close-loop MIMO Feedback" },
{ 14, "Reserved" },
{ 15, "Reserved" },
{ 0, NULL}
};
/* common fields */
static gint hf_mac_header_generic_ext_subheader_rsv = -1;
/* DL sub-header */
static gint hf_mac_header_generic_ext_subheader_type_dl = -1;
static gint hf_mac_header_generic_ext_subheader_sdu_sn = -1;
static gint hf_mac_header_generic_ext_subheader_dl_sleep_control_pscid = -1;
static gint hf_mac_header_generic_ext_subheader_dl_sleep_control_op = -1;
static gint hf_mac_header_generic_ext_subheader_dl_sleep_control_fswe = -1;
static gint hf_mac_header_generic_ext_subheader_dl_sleep_control_fswb = -1;
static gint hf_mac_header_generic_ext_subheader_dl_sleep_control_rsv = -1;
static gint hf_mac_header_generic_ext_subheader_fb_req_uiuc = -1;
static gint hf_mac_header_generic_ext_subheader_fb_req_fb_type = -1;
static gint hf_mac_header_generic_ext_subheader_fb_req_ofdma_symbol_offset = -1;
static gint hf_mac_header_generic_ext_subheader_fb_req_subchannel_offset = -1;
static gint hf_mac_header_generic_ext_subheader_fb_req_slots = -1;
static gint hf_mac_header_generic_ext_subheader_fb_req_frame_offset = -1;
/* DL Sleep Control Operations */
static const value_string dl_sleep_control_ops[] =
{
{ 0, "De-activate Power Saving Class" },
{ 1, "Activate Power Saving Class" },
{ 0, NULL}
};
/* UL sub-header */
static gint hf_mac_header_generic_ext_subheader_type_ul = -1;
static gint hf_mac_header_generic_ext_subheader_mimo_mode_fb_type = -1;
static gint hf_mac_header_generic_ext_subheader_mimo_fb_content = -1;
static gint hf_mac_header_generic_ext_subheader_ul_tx_pwr_rep = -1;
static gint hf_mac_header_generic_ext_subheader_mini_fb_type = -1;
static gint hf_mac_header_generic_ext_subheader_mini_fb_content = -1;
/* common fields */
static gint hf_mac_header_generic_ext_subheader_pdu_sn_short = -1;
static gint hf_mac_header_generic_ext_subheader_pdu_sn_long = -1;
/* SN Request subheader */
#define SN_REQUEST_SUBHEADER_SN_REPORT_INDICATION_1_MASK 0x01
#define SN_REQUEST_SUBHEADER_SN_REPORT_INDICATION_2_MASK 0x02
#define SN_REQUEST_SUBHEADER_RESERVED_MASK 0xFC
static gint hf_mac_header_generic_ext_subheader_sn_req_rep_ind_1 = -1;
static gint hf_mac_header_generic_ext_subheader_sn_req_rep_ind_2 = -1;
static gint hf_mac_header_generic_ext_subheader_sn_req_rsv = -1;
/* SN Report Indication message */
static const value_string sn_rep_msg[] =
{
{ 0, "" },
{ 1, "request transmission" },
{ 0, NULL}
};
/* Extended Subheader display */
static hf_register_info hf_ext[] =
{
{
&hf_mac_header_generic_ext_subheader_rsv,
{
"Reserved", "wmx.genericExtSubhd.Rsv",
FT_UINT8, BASE_DEC, NULL, EXTENDED_SUB_HEADER_RSV_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_type_dl,
{
"DL Extended Subheader Type", "wmx.genericExtSubhd.Dl",
FT_UINT8, BASE_DEC, VALS(dl_ext_sub_header_type), EXTENDED_SUB_HEADER_TYPE_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_type_ul,
{
"UL Extended Subheader Type", "wmx.genericExtSubhd.Ul",
FT_UINT8, BASE_DEC, VALS(ul_ext_sub_header_type), EXTENDED_SUB_HEADER_TYPE_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_sdu_sn,
{
"SDU Sequence Number", "wmx.genericExtSubhd.SduSn",
FT_UINT8, BASE_DEC, NULL, 0x0,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_dl_sleep_control_pscid,
{
"Power Saving Class ID", "wmx.genericExtSubhd.DlSleepCtrlPSCID",
FT_UINT24, BASE_DEC, NULL, DL_SLEEP_CONTROL_POWER_SAVING_CLASS_ID_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_dl_sleep_control_op,
{
"Operation", "wmx.genericExtSubhd.DlSleepCtrlOP",
FT_UINT24, BASE_HEX, VALS(dl_sleep_control_ops), DL_SLEEP_CONTROL_OPERATION_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_dl_sleep_control_fswe,
{
"Final Sleep Window Exponent", "wmx.genericExtSubhd.DlSleepCtrlFSWE",
FT_UINT24, BASE_DEC, NULL, DL_SLEEP_CONTROL_FINAL_SLEEP_WINDOW_EXPONENT_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_dl_sleep_control_fswb,
{
"Final Sleep Window Base", "wmx.genericExtSubhd.DlSleepCtrlFSWB",
FT_UINT24, BASE_DEC, NULL, DL_SLEEP_CONTROL_FINAL_SLEEP_WINDOW_BASE_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_dl_sleep_control_rsv,
{
"Reserved", "wmx.genericExtSubhd.DlSleepCtrlRsv",
FT_UINT24, BASE_DEC, NULL, DL_SLEEP_CONTROL_RESERVED_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_fb_req_uiuc,
{
"UIUC", "wmx.genericExtSubhd.FbReqUIUC",
FT_UINT24, BASE_HEX, VALS(uiuc_values), FEEDBACK_REQUEST_UIUC_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_fb_req_fb_type,
{
"Feedback Type", "wmx.genericExtSubhd.FbReqFbType",
FT_UINT24, BASE_HEX, VALS(fb_types), FEEDBACK_REQUEST_FEEDBACK_TYPE_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_fb_req_ofdma_symbol_offset,
{
"OFDMA Symbol Offset", "wmx.genericExtSubhd.FbReqOfdmaSymbolOffset",
FT_UINT24, BASE_HEX, NULL, FEEDBACK_REQUEST_OFDMA_SYMBOL_OFFSET_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_fb_req_subchannel_offset,
{
"Subchannel Offset", "wmx.genericExtSubhd.FbReqSubchannelOffset",
FT_UINT24, BASE_HEX, NULL, FEEDBACK_REQUEST_SUBCHANNEL_OFFSET_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_fb_req_slots,
{
"Number of Slots", "wmx.genericExtSubhd.FbReqSlots",
FT_UINT24, BASE_HEX, NULL, FEEDBACK_REQUEST_NUMBER_OF_SLOTS_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_fb_req_frame_offset,
{
"Frame Offset", "wmx.genericExtSubhd.FbReqFrameOffset",
FT_UINT24, BASE_HEX, NULL, FEEDBACK_REQUEST_FRAME_OFFSET_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_sn_req_rep_ind_1,
{
"First SN Report Indication", "wmx.genericExtSubhd.SnReqRepInd1",
FT_UINT8, BASE_DEC, VALS(sn_rep_msg), SN_REQUEST_SUBHEADER_SN_REPORT_INDICATION_1_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_sn_req_rep_ind_2,
{
"Second SN Report Indication", "wmx.genericExtSubhd.SnReqRepInd2",
FT_UINT8, BASE_DEC, VALS(sn_rep_msg), SN_REQUEST_SUBHEADER_SN_REPORT_INDICATION_2_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_sn_req_rsv,
{
"Reserved", "wmx.genericExtSubhd.SnReqRsv",
FT_UINT8, BASE_DEC, NULL, SN_REQUEST_SUBHEADER_RESERVED_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_mimo_mode_fb_type,
{
"Feedback Type", "wmx.genericExtSubhd.MimoFbType",
FT_UINT8, BASE_DEC, VALS(mimo_fb_types), MIMO_FEEDBACK_TYPE_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_mimo_fb_content,
{
"Feedback Content", "wmx.genericExtSubhd.MimoFbContent",
FT_UINT8, BASE_DEC, NULL, MIMO_FEEDBACK_CONTENT_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_ul_tx_pwr_rep,
{
"UL TX Power", "wmx.genericExtSubhd.UlTxPwr",
FT_UINT8, BASE_DEC, NULL, 0x0,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_mini_fb_type,
{
"Feedback Type", "wmx.genericExtSubhd.MiniFbType",
FT_UINT16, BASE_DEC, VALS(fb_types), MINI_FEEDBACK_TYPE_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_mini_fb_content,
{
"Feedback Content", "wmx.genericExtSubhd.MiniFbContent",
FT_UINT16, BASE_DEC, NULL, MINI_FEEDBACK_CONTENT_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_pdu_sn_short,
{
"PDU Sequence Number", "wmx.genericExtSubhd.PduSnShort",
FT_UINT8, BASE_DEC, NULL, 0x0,
"", HFILL
}
},
{
&hf_mac_header_generic_ext_subheader_pdu_sn_long,
{
"PDU Sequence Number", "wmx.genericExtSubhd.PduSnLong",
FT_UINT16, BASE_DEC, NULL, 0x0,
"", HFILL
}
}
};
/* Mesh Subheader */
static gint hf_mac_header_generic_mesh_subheader = -1;
/* Mesh Subheader display */
static hf_register_info hf_mesh[] =
{
{
&hf_mac_header_generic_mesh_subheader,
{
"Xmt Node Id", "wmx.genericMeshSubhd",
FT_UINT16, BASE_DEC, NULL, 0x0,
"", HFILL
}
}
};
/* Fragmentation Subheader (table 8) */
#define FRAGMENTATION_SUBHEADER_FC_MASK 0xC000 /*0x0003*/
#define FRAGMENTATION_SUBHEADER_BSN_MASK 0x3FF8 /*0x1FFC*/
#define FRAGMENTATION_SUBHEADER_RSV_EXT_MASK 0x0007 /*0xE000*/
#define FRAGMENTATION_SUBHEADER_FSN_MASK 0x38 /*0x1C*/
#define FRAGMENTATION_SUBHEADER_RSV_MASK 0x07 /*0xE0*/
#define FRAGMENT_TYPE_MASK 0xC0
#define SEQ_NUMBER_MASK 0x38
#define SEQ_NUMBER_MASK_11 0x3FF8
#define NO_FRAG 0
#define LAST_FRAG 1
#define FIRST_FRAG 2
#define MIDDLE_FRAG 3
static gint hf_mac_header_generic_frag_subhd_fc = -1;
static gint hf_mac_header_generic_frag_subhd_fc_ext = -1;
static gint hf_mac_header_generic_frag_subhd_bsn = -1;
static gint hf_mac_header_generic_frag_subhd_fsn = -1;
static gint hf_mac_header_generic_frag_subhd_fsn_ext = -1;
static gint hf_mac_header_generic_frag_subhd_rsv = -1;
static gint hf_mac_header_generic_frag_subhd_rsv_ext = -1;
/* Fragment Types */
static const value_string frag_types[] =
{
{ 0, "No fragmentation" },
{ 1, "Last fragment" },
{ 2, "First fragment" },
{ 3, "Continuing (middle) fragment" },
{ 0, NULL}
};
/* Fragmentation Subheader display */
static hf_register_info hf_frag[] =
{
{
&hf_mac_header_generic_frag_subhd_fc,
{
"Fragment Type", "wmx.genericFragSubhd.Fc",
FT_UINT8, BASE_DEC, VALS(frag_types), FRAGMENTATION_SUBHEADER_FC_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_frag_subhd_fc_ext,
{
"Fragment Type", "wmx.genericFragSubhd.FcExt",
FT_UINT16, BASE_DEC, VALS(frag_types), FRAGMENTATION_SUBHEADER_FC_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_frag_subhd_bsn,
{
"Block Sequence Number (BSN)", "wmx.genericFragSubhd.Bsn",
FT_UINT16, BASE_DEC, NULL, FRAGMENTATION_SUBHEADER_BSN_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_frag_subhd_fsn,
{
"Fragment Sequence Number (FSN)", "wmx.genericFragSubhd.Fsn",
FT_UINT8, BASE_DEC, NULL, FRAGMENTATION_SUBHEADER_FSN_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_frag_subhd_fsn_ext,
{
"Fragment Sequence Number (FSN)", "wmx.genericFragSubhd.FsnExt",
FT_UINT16, BASE_DEC, NULL, FRAGMENTATION_SUBHEADER_BSN_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_frag_subhd_rsv,
{
"Reserved", "wmx.genericFragSubhd.Rsv",
FT_UINT8, BASE_DEC, NULL, FRAGMENTATION_SUBHEADER_RSV_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_frag_subhd_rsv_ext,
{
"Reserved", "wmx.genericFragSubhd.RsvExt",
FT_UINT16, BASE_DEC, NULL, FRAGMENTATION_SUBHEADER_RSV_EXT_MASK,
"", HFILL
}
}
};
/* Packing Subheader (table 11) */
#define PACKING_SUBHEADER_FC_MASK 0xC00000
#define PACKING_SUBHEADER_BSN_MASK 0x3FF800
#define PACKING_SUBHEADER_FSN_MASK 0x38
#define PACKING_SUBHEADER_LENGTH_MASK 0x07FF
#define PACKING_SUBHEADER_LENGTH_EXT_MASK 0x0007FF
#define FRAG_LENGTH_MASK 0x0007FF00
static gint hf_mac_header_generic_packing_subhd_fc = -1;
static gint hf_mac_header_generic_packing_subhd_fc_ext = -1;
static gint hf_mac_header_generic_packing_subhd_bsn = -1;
static gint hf_mac_header_generic_packing_subhd_fsn = -1;
static gint hf_mac_header_generic_packing_subhd_fsn_ext = -1;
static gint hf_mac_header_generic_packing_subhd_len = -1;
static gint hf_mac_header_generic_packing_subhd_len_ext = -1;
/* Packing Subheader display */
static hf_register_info hf_pack[] =
{
{
&hf_mac_header_generic_packing_subhd_fc,
{
"Fragment Type", "wmx.genericPackSubhd.Fc",
FT_UINT16, BASE_DEC, VALS(frag_types), PACKING_SUBHEADER_FC_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_packing_subhd_fc_ext,
{
"Fragment Type", "wmx.genericPackSubhd.FcExt",
FT_UINT24, BASE_HEX, VALS(frag_types), PACKING_SUBHEADER_FC_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_packing_subhd_bsn,
{
"First Block Sequence Number", "wmx.genericPackSubhd.Bsn",
FT_UINT24, BASE_DEC, NULL, PACKING_SUBHEADER_BSN_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_packing_subhd_fsn,
{
"Fragment Number", "wmx.genericPackSubhd.Fsn",
FT_UINT16, BASE_DEC, NULL, PACKING_SUBHEADER_FSN_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_packing_subhd_fsn_ext,
{
"Fragment Number", "wmx.genericPackSubhd.FsnExt",
FT_UINT24, BASE_DEC, NULL, PACKING_SUBHEADER_BSN_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_packing_subhd_len,
{
"Length", "wmx.genericPackSubhd.Len",
FT_UINT16, BASE_DEC, NULL, PACKING_SUBHEADER_LENGTH_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_packing_subhd_len_ext,
{
"Length", "wmx.genericPackSubhd.LenExt",
FT_UINT24, BASE_DEC, NULL, PACKING_SUBHEADER_LENGTH_EXT_MASK,
"", HFILL
}
}
};
/* Fast-feedback Allocation Subheader (table 13) */
#define FAST_FEEDBACK_ALLOCATION_OFFSET_MASK 0xFC /*0x3F*/
#define FAST_FEEDBACK_FEEDBACK_TYPE_MASK 0x03 /*0xC0*/
static gint hf_mac_header_generic_fast_fb_subhd_alloc_offset = -1;
static gint hf_mac_header_generic_fast_fb_subhd_fb_type = -1;
/* Fast-feedback Allocation Subheader display */
static hf_register_info hf_fast[] =
{
{
&hf_mac_header_generic_fast_fb_subhd_alloc_offset,
{
"Allocation Offset", "wmx.genericFastFbSubhd.AllocOffset",
FT_UINT8, BASE_DEC, NULL, FAST_FEEDBACK_ALLOCATION_OFFSET_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_fast_fb_subhd_fb_type,
{
"Feedback Type", "wmx.genericFastFbSubhd.FbType",
FT_UINT8, BASE_DEC, VALS(fast_fb_types), FAST_FEEDBACK_FEEDBACK_TYPE_MASK,
"", HFILL
}
}
};
/* Grant Management Subheader (table 9 & 10) */
#define GRANT_MGMT_SUBHEADER_UGS_SI_MASK 0x8000 /*0x0001*/
#define GRANT_MGMT_SUBHEADER_UGS_PM_MASK 0x4000 /*0x0002*/
#define GRANT_MGMT_SUBHEADER_UGS_FLI_MASK 0x2000 /*0x0004*/
#define GRANT_MGMT_SUBHEADER_UGS_FL_MASK 0x1E00 /*0x0078*/
#define GRANT_MGMT_SUBHEADER_UGS_RSV_MASK 0x01FF /*0xFF80*/
#define GRANT_MGMT_SUBHEADER_EXT_PBR_MASK 0xFFE0 /*0x07FF*/
#define GRANT_MGMT_SUBHEADER_EXT_FLI_MASK 0x0010 /*0x0800*/
#define GRANT_MGMT_SUBHEADER_EXT_FL_MASK 0x000F /*0xF000*/
enum
{
SCHEDULE_SERVICE_TYPE_RSVD,
SCHEDULE_SERVICE_TYPE_UNDEFINED,
SCHEDULE_SERVICE_TYPE_BE,
SCHEDULE_SERVICE_TYPE_NRTPS,
SCHEDULE_SERVICE_TYPE_RTPS,
SCHEDULE_SERVICE_TYPE_EXT_RTPS,
SCHEDULE_SERVICE_TYPE_UGS
} SCHEDULE_SERVICE_TYPE;
static gint hf_mac_header_generic_grant_mgmt_ugs_tree = -1;
static gint hf_mac_header_generic_grant_mgmt_subhd_ugs_si = -1;
static gint hf_mac_header_generic_grant_mgmt_subhd_ugs_pm = -1;
static gint hf_mac_header_generic_grant_mgmt_subhd_ugs_fli = -1;
static gint hf_mac_header_generic_grant_mgmt_subhd_ugs_fl = -1;
static gint hf_mac_header_generic_grant_mgmt_subhd_ugs_rsv = -1;
static gint hf_mac_header_generic_grant_mgmt_ext_rtps_tree = -1;
static gint hf_mac_header_generic_grant_mgmt_subhd_ext_pbr = -1;
static gint hf_mac_header_generic_grant_mgmt_subhd_ext_fli = -1;
static gint hf_mac_header_generic_grant_mgmt_subhd_ext_fl = -1;
static gint hf_mac_header_generic_grant_mgmt_ext_pbr_tree = -1;
static gint hf_mac_header_generic_grant_mgmt_subhd_pbr = -1;
/* Slip Indicators */
static const value_string si_msgs[] =
{
{ 0, "No action" },
{ 1, "A slip of UL grants relative to the UL queue depth" },
{ 0, NULL}
};
/* Poll-Me Messages */
static const value_string pm_msgs[] =
{
{ 0, "No action" },
{ 1, "Request a bandwidth poll" },
{ 0, NULL}
};
/* Frame Latency Indications */
static const value_string fli_msgs[] =
{
{ 0, "Frame latency field disabled" },
{ 1, "Frame latency field enabled" },
{ 0, NULL}
};
/* Grant Management Subheader display */
static hf_register_info hf_grant[] =
{
{
&hf_mac_header_generic_grant_mgmt_ext_pbr_tree,
{
"Scheduling Service Type (Default)",
"wimax.genericGrantSubhd.Default",
FT_UINT16, BASE_DEC, NULL, 0x0,
"", HFILL
}
},
{
&hf_mac_header_generic_grant_mgmt_subhd_pbr,
{
"PiggyBack Request", "wmx.genericGrantSubhd.Pbr",
FT_UINT16, BASE_DEC, NULL, 0x0,
"", HFILL
}
},
{
&hf_mac_header_generic_grant_mgmt_ugs_tree,
{
"Scheduling Service Type (UGS)", "wmx.genericGrantSubhd.UGS",
FT_UINT16, BASE_DEC, NULL, 0x0,
"", HFILL
}
},
{
&hf_mac_header_generic_grant_mgmt_subhd_ugs_si,
{
"Slip Indicator", "wmx.genericGrantSubhd.Si",
FT_UINT16, BASE_DEC, VALS(si_msgs), GRANT_MGMT_SUBHEADER_UGS_SI_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_grant_mgmt_subhd_ugs_pm,
{
"Poll-Me", "wmx.genericGrantSubhd.Pm",
FT_UINT16, BASE_DEC, VALS(pm_msgs), GRANT_MGMT_SUBHEADER_UGS_PM_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_grant_mgmt_subhd_ugs_fli,
{
"Frame Latency Indication", "wmx.genericGrantSubhd.Fli",
FT_UINT16, BASE_DEC, VALS(fli_msgs), GRANT_MGMT_SUBHEADER_UGS_FLI_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_grant_mgmt_subhd_ugs_fl,
{
"Frame Latency", "wmx.genericGrantSubhd.Fl",
FT_UINT16, BASE_DEC, NULL, GRANT_MGMT_SUBHEADER_UGS_FL_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_grant_mgmt_subhd_ugs_rsv,
{
"Reserved", "wmx.genericGrantSubhd.Rsv",
FT_UINT16, BASE_DEC, NULL, GRANT_MGMT_SUBHEADER_UGS_RSV_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_grant_mgmt_ext_rtps_tree,
{
"Scheduling Service Type (Extended rtPS)",
"wimax.genericGrantSubhd.ExtendedRTPS",
FT_UINT16, BASE_DEC, NULL, 0x0,
"", HFILL
}
},
{
&hf_mac_header_generic_grant_mgmt_subhd_ext_pbr,
{
"Extended PiggyBack Request", "wmx.genericGrantSubhd.ExtPbr",
FT_UINT16, BASE_DEC, NULL, GRANT_MGMT_SUBHEADER_EXT_PBR_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_grant_mgmt_subhd_ext_fli,
{
"Frame Latency Indication", "wmx.genericGrantSubhd.ExtFli",
FT_UINT16, BASE_DEC, VALS(fli_msgs), GRANT_MGMT_SUBHEADER_EXT_FLI_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_grant_mgmt_subhd_ext_fl,
{
"Frame Latency", "wmx.genericGrantSubhd.ExtFl",
FT_UINT16, BASE_DEC, NULL, GRANT_MGMT_SUBHEADER_EXT_FL_MASK,
"", HFILL
}
}
};
/* ARQ Feedback Payload */
/* ARQ Feedback IE bit masks (table 111) */
#define ARQ_FB_IE_LAST_BIT_MASK 0x8000 /*0x0001*/
#define ARQ_FB_IE_ACK_TYPE_MASK 0x6000 /*0x0006*/
#define ARQ_FB_IE_BSN_MASK 0x1FFC /*0x3FF8*/
#define ARQ_FB_IE_NUM_MAPS_MASK 0x0003 /*0xC000*/
#define ARQ_FB_IE_SEQ_FORMAT_MASK 0x8000 /*0x0001*/
#define ARQ_FB_IE_SEQ_ACK_MAP_MASK 0x7000 /*0x000E*/
#define ARQ_FB_IE_SEQ1_LENGTH_MASK 0x0F00 /*0x00F0*/
#define ARQ_FB_IE_SEQ2_LENGTH_MASK 0x00F0 /*0x0F00*/
#define ARQ_FB_IE_SEQ3_LENGTH_MASK 0x000F /*0xF000*/
#define ARQ_FB_IE_SEQ_ACK_MAP_2_MASK 0x6000 /*0x0006*/
#define ARQ_FB_IE_SEQ1_LENGTH_6_MASK 0x1F80 /*0x01F8*/
#define ARQ_FB_IE_SEQ2_LENGTH_6_MASK 0x007E /*0x7E00*/
#define ARQ_FB_IE_RSV_MASK 0x0001 /*0x8000*/
static gint hf_mac_header_generic_arq_fb_ie_cid = -1;
static gint hf_mac_header_generic_arq_fb_ie_last = -1;
static gint hf_mac_header_generic_arq_fb_ie_ack_type = -1;
static gint hf_mac_header_generic_arq_fb_ie_bsn = -1;
static gint hf_mac_header_generic_arq_fb_ie_num_maps = -1;
static gint hf_ack_type_reserved = -1;
static gint hf_mac_header_generic_arq_fb_ie_sel_ack_map = -1;
static gint hf_mac_header_generic_arq_fb_ie_seq_format = -1;
static gint hf_mac_header_generic_arq_fb_ie_seq_ack_map = -1;
static gint hf_mac_header_generic_arq_fb_ie_seq1_length = -1;
static gint hf_mac_header_generic_arq_fb_ie_seq2_length = -1;
static gint hf_mac_header_generic_arq_fb_ie_seq3_length = -1;
static gint hf_mac_header_generic_arq_fb_ie_seq_ack_map_2 = -1;
static gint hf_mac_header_generic_arq_fb_ie_seq1_length_6 = -1;
static gint hf_mac_header_generic_arq_fb_ie_seq2_length_6 = -1;
static gint hf_mac_header_generic_arq_fb_ie_rsv = -1;
/* Last IE Indicators */
static const value_string last_ie_msgs[] =
{
{ 0, "No" },
{ 1, "Yes" },
{ 0, NULL}
};
/* ARQ Feedback Payload display */
static hf_register_info hf_arq[] =
{
{
&hf_mac_header_generic_arq_fb_ie_cid,
{
"CID", "wmx.genericArq.FbIeCid",
FT_UINT16, BASE_DEC, NULL, 0x0,
"", HFILL
}
},
{
&hf_mac_header_generic_arq_fb_ie_last,
{
"Last IE", "wmx.genericArq.FbIeLast",
FT_UINT16, BASE_DEC, VALS(last_ie_msgs), ARQ_FB_IE_LAST_BIT_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_arq_fb_ie_ack_type,
{
"ACK Type", "wmx.genericArq.FbIeAckType",
FT_UINT16, BASE_DEC, NULL, ARQ_FB_IE_ACK_TYPE_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_arq_fb_ie_bsn,
{
"BSN", "wmx.genericArq.FbIeBsn",
FT_UINT16, BASE_DEC, NULL, ARQ_FB_IE_BSN_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_arq_fb_ie_num_maps,
{
"Number of ACK Maps", "wmx.genericArq.FbIeMaps",
FT_UINT16, BASE_DEC, NULL, ARQ_FB_IE_NUM_MAPS_MASK,
"", HFILL
}
},
{
&hf_ack_type_reserved,
{
"Reserved", "wmx.genericArq.FbIeRsvd", FT_UINT16, BASE_DEC, NULL, 0x03, "", HFILL
}
},
{
&hf_mac_header_generic_arq_fb_ie_sel_ack_map,
{
"Selective ACK Map", "wmx.genericArq.FbIeSelAckMap",
FT_UINT16, BASE_HEX, NULL, 0x0,
"", HFILL
}
},
{
&hf_mac_header_generic_arq_fb_ie_seq_format,
{
"Sequence Format", "wmx.genericArq.FbIeSeqFmt",
FT_UINT16, BASE_DEC, NULL, ARQ_FB_IE_SEQ_FORMAT_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_arq_fb_ie_seq_ack_map,
{
"Sequence ACK Map", "wmx.genericArq.FbIeSeqAckMap",
FT_UINT16, BASE_HEX, NULL, ARQ_FB_IE_SEQ_ACK_MAP_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_arq_fb_ie_seq1_length,
{
"Sequence 1 Length", "wmx.genericArq.FbIeSeq1Len",
FT_UINT16, BASE_DEC, NULL, ARQ_FB_IE_SEQ1_LENGTH_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_arq_fb_ie_seq2_length,
{
"Sequence 2 Length", "wmx.genericArq.FbIeSeq2Len",
FT_UINT16, BASE_DEC, NULL, ARQ_FB_IE_SEQ2_LENGTH_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_arq_fb_ie_seq3_length,
{
"Sequence 3 Length", "wmx.genericArq.FbIeSeq3Len",
FT_UINT16, BASE_DEC, NULL, ARQ_FB_IE_SEQ3_LENGTH_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_arq_fb_ie_seq_ack_map_2,
{
"Sequence ACK Map", "wmx.genericArq.FbIeSeqAckMap2",
FT_UINT16, BASE_HEX, NULL, ARQ_FB_IE_SEQ_ACK_MAP_2_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_arq_fb_ie_seq1_length_6,
{
"Sequence 1 Length", "wmx.genericArq.FbIeSeq1Len",
FT_UINT16, BASE_DEC, NULL, ARQ_FB_IE_SEQ1_LENGTH_6_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_arq_fb_ie_seq2_length_6,
{
"Sequence 2 Length", "wmx.genericArq.FbIeSeq2Len",
FT_UINT16, BASE_DEC, NULL, ARQ_FB_IE_SEQ2_LENGTH_6_MASK,
"", HFILL
}
},
{
&hf_mac_header_generic_arq_fb_ie_rsv,
{
"Reserved", "wmx.genericArq.FbIeRsv",
FT_UINT16, BASE_DEC, NULL, ARQ_FB_IE_RSV_MASK,
"", HFILL
}
}
};
/* Register Wimax defrag table init routine. */
void wimax_defragment_init(void)
{
gint i;
fragment_table_init(&payload_frag_table);
/* Init fragmentation variables. */
for (i = 0; i < MAX_CID; i++)
{
cid_adjust[i] = 1; /* Must not start with 0 */
cid_vernier[i] = 0;
}
cid_adj_array_size = 0;
/* Free the array memory. */
if (cid_adj_array) {
free(cid_adj_array);
}
cid_adj_array = NULL;
if (frag_num_array) {
free(frag_num_array);
}
frag_num_array = NULL;
/* Initialize to make sure bs_address gets set in FCH decoder. */
bs_address.len = 0;
/* Initialize the Scheduling Service Type flag */
seen_a_service_type = 0;
max_logical_bands = 12;
/* Initialize UL_MAP globals. */
init_wimax_globals();
}
static guint decode_packing_subheader(tvbuff_t *payload_tvb, packet_info *pinfo, proto_tree *tree, guint payload_length, guint payload_offset, proto_item *parent_item)
{
proto_item *generic_item = NULL;
proto_tree *generic_tree = NULL;
guint starting_offset = payload_offset;
/* update the info column */
if (check_col(pinfo->cinfo, COL_INFO))
{
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "Packing subhdr");
}
/* add the Packing subheader info */
proto_item_append_text(parent_item, ", Packing Subheader");
/* display Packing subheader type */
generic_item = proto_tree_add_protocol_format(tree, proto_mac_header_generic_decoder, payload_tvb, payload_offset, ((arq_enabled|extended_type)?3:2), "Packing subheader (%u bytes)", ((arq_enabled|extended_type)?3:2));
/* add Packing subheader subtree */
generic_tree = proto_item_add_subtree(generic_item, ett_mac_pkt_subheader_decoder);
/* decode and display the Packing subheader */
/* Get the fragment type */
frag_type = (tvb_get_guint8(payload_tvb, payload_offset) & FRAGMENT_TYPE_MASK) >> 6;
/* if ARQ Feedback payload is present */
if (arq_fb_payload)
{ /* get the frag length */
frag_len = ((tvb_get_ntohl(payload_tvb, payload_offset) & FRAG_LENGTH_MASK) >> 8);
/* get the sequence number */
seq_number = (tvb_get_ntohs(payload_tvb, payload_offset) & SEQ_NUMBER_MASK_11) >> 3;
proto_tree_add_item(generic_tree, hf_mac_header_generic_packing_subhd_fc_ext, payload_tvb, payload_offset, 3, FALSE);
proto_tree_add_item(generic_tree, hf_mac_header_generic_packing_subhd_bsn, payload_tvb, payload_offset, 3, FALSE);
proto_tree_add_item(generic_tree, hf_mac_header_generic_packing_subhd_len_ext, payload_tvb, payload_offset, 3, FALSE);
/* update the length and offset */
payload_length -= 3;
payload_offset += 3;
frag_len -= 3;
}
else
{
if (extended_type)
{ /* get the frag length */
frag_len = ((tvb_get_ntohl(payload_tvb, payload_offset) & FRAG_LENGTH_MASK) >> 8);
/* get the sequence number */
seq_number = (tvb_get_ntohs(payload_tvb, payload_offset) & SEQ_NUMBER_MASK_11) >> 3;
proto_tree_add_item(generic_tree, hf_mac_header_generic_packing_subhd_fc_ext, payload_tvb, payload_offset, 3, FALSE);
proto_tree_add_item(generic_tree, hf_mac_header_generic_packing_subhd_fsn_ext, payload_tvb, payload_offset, 3, FALSE);
proto_tree_add_item(generic_tree, hf_mac_header_generic_packing_subhd_len_ext, payload_tvb, payload_offset, 3, FALSE);
/* update the length and offset */
payload_length -= 3;
payload_offset += 3;
frag_len -= 3;
}
else
{ /* get the frag length */
frag_len = (tvb_get_ntohs(payload_tvb, payload_offset) & PACKING_SUBHEADER_LENGTH_MASK);
/* get the sequence number */
seq_number = (tvb_get_guint8(payload_tvb, payload_offset) & SEQ_NUMBER_MASK) >> 3;
proto_tree_add_item(generic_tree, hf_mac_header_generic_packing_subhd_fc, payload_tvb, payload_offset, 2, FALSE);
proto_tree_add_item(generic_tree, hf_mac_header_generic_packing_subhd_fsn, payload_tvb, payload_offset, 2, FALSE);
proto_tree_add_item(generic_tree, hf_mac_header_generic_packing_subhd_len, payload_tvb, payload_offset, 2, FALSE);
/* update the length and offset */
payload_length -= 2;
payload_offset += 2;
frag_len -= 2;
}
}
/* Prevent a crash! */
if ((gint)frag_len < 0)
frag_len = 0;
/* Return the number of bytes decoded. */
return payload_offset - starting_offset;
}
/* Register Wimax Generic Mac Header Protocol and Dissector */
void proto_register_mac_header_generic(void)
{
if (proto_mac_header_generic_decoder == -1)
{
proto_mac_header_generic_decoder = proto_register_protocol (
"WiMax Generic/Type1/Type2 MAC Header Messages", /* name */
"WiMax Generic/Type1/Type2 MAC Header (hdr)", /* short name */
"wmx.hdr" /* abbrev */
);
/* register the field display messages */
proto_register_field_array(proto_mac_header_generic_decoder, hf, array_length(hf));
proto_register_field_array(proto_mac_header_generic_decoder, hf_ext, array_length(hf_ext));
proto_register_field_array(proto_mac_header_generic_decoder, hf_mesh, array_length(hf_mesh));
proto_register_field_array(proto_mac_header_generic_decoder, hf_frag, array_length(hf_frag));
proto_register_field_array(proto_mac_header_generic_decoder, hf_pack, array_length(hf_pack));
proto_register_field_array(proto_mac_header_generic_decoder, hf_fast, array_length(hf_fast));
proto_register_field_array(proto_mac_header_generic_decoder, hf_grant, array_length(hf_grant));
proto_register_field_array(proto_mac_header_generic_decoder, hf_arq, array_length(hf_arq));
proto_register_subtree_array(ett, array_length(ett));
}
/* register the generic mac header dissector */
register_dissector("mac_header_generic_handler", dissect_mac_header_generic_decoder, proto_mac_header_generic_decoder);
/* register the mac payload dissector */
proto_register_mac_mgmt_msg();
/* Register the payload fragment table init routine */
register_init_routine(wimax_defragment_init);
}
void dissect_mac_header_generic_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
guint offset = 0;
guint payload_offset;
guint payload_length = 0;
static guint8 frag_number[MAX_CID];
static guint cid_list[MAX_CID];
static guint cid_base;
static char *reassem_str = "Reassembled Data transport PDU (%u bytes)";
static char *data_str = "Data transport PDU (%u bytes)";
char *str_ptr;
gint length, i, cid_index;
guint tvb_len, ret_length, ubyte, new_tvb_len;
guint new_payload_len = 0;
guint mac_ht, mac_ec, mac_esf, mac_ci, mac_eks, mac_len, mac_cid, cid;
guint ffb_grant_mgmt_subheader, packing_subheader, fragment_subheader;
guint mesh_subheader;
guint packing_length;
guint32 mac_crc, calculated_crc;
proto_item *parent_item = NULL;
proto_item *generic_item = NULL;
proto_tree *generic_tree = NULL;
proto_item *child_item = NULL;
proto_tree *child_tree = NULL;
tvbuff_t *payload_tvb;
tvbuff_t *data_pdu_tvb;
fragment_data *payload_frag;
gboolean first_arq_fb_payload = TRUE;
dissector_handle_t mac_payload_handle;
proto_mac_header_generic_decoder = proto_wimax;
if (tree)
{ /* we are being asked for details */
#ifdef DEBUG
/* update the info column */
if (check_col(pinfo->cinfo, COL_INFO))
{
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "GMH");
}
#endif
/* Get the frame length */
tvb_len = tvb_reported_length(tvb);
if (tvb_len < WIMAX_MAC_HEADER_SIZE)
{ /* display the error message */
generic_item = proto_tree_add_protocol_format(tree, proto_mac_header_generic_decoder, tvb, offset, tvb_len, "Error: the size of Generic MAC Header tvb is too small! (%u bytes)", tvb_len);
/* add subtree */
generic_tree = proto_item_add_subtree(generic_item, ett_mac_header_generic_decoder);
/* display the Generic MAC Header in Hex */
proto_tree_add_item(generic_tree, hf_mac_header_generic_value_bytes, tvb, offset, tvb_len, FALSE);
return;
}
/* get the parent */
parent_item = proto_tree_get_parent(tree);
/* add the MAC header info */
proto_item_append_text(parent_item, " - Generic MAC Header");
/* display MAC header message */
generic_item = proto_tree_add_protocol_format(tree, proto_mac_header_generic_decoder, tvb, offset, WIMAX_MAC_HEADER_SIZE, "Generic MAC Header (%u bytes)", WIMAX_MAC_HEADER_SIZE);
/* add MAC header subtree */
generic_tree = proto_item_add_subtree(generic_item, ett_mac_header_generic_decoder);
/* Decode and display the MAC header */
/* Get the first byte */
ubyte = tvb_get_guint8(tvb, offset);
/* get the Header Type (HT) */
mac_ht = ((ubyte & WIMAX_MAC_HEADER_GENERIC_HT_MASK)?1:0);
/* get the Encryption Control (EC) */
mac_ec = ((ubyte & WIMAX_MAC_HEADER_GENERIC_EC_MASK)?1:0);
/* get the sub types */
ffb_grant_mgmt_subheader = ((ubyte & GENERIC_SUB_TYPE_0)?1:0);
packing_subheader = ((ubyte & GENERIC_SUB_TYPE_1)?1:0);
fragment_subheader = ((ubyte & GENERIC_SUB_TYPE_2)?1:0);
extended_type = ((ubyte & GENERIC_SUB_TYPE_3)?1:0);
arq_fb_payload = ((ubyte & GENERIC_SUB_TYPE_4)?1:0);
mesh_subheader = ((ubyte & GENERIC_SUB_TYPE_5)?1:0);
/* Get the 2nd byte */
ubyte = tvb_get_guint8(tvb, (offset+1));
/* get the Extended subheader field (ESF) */
mac_esf = ((ubyte & WIMAX_MAC_HEADER_GENERIC_ESF_MASK)?1:0);
/* get the CRC indicator (CI) */
mac_ci = ((ubyte & WIMAX_MAC_HEADER_GENERIC_CI_MASK)?1:0);
/* get the Encryption key sequence (EKS) */
mac_eks = ((ubyte & WIMAX_MAC_HEADER_GENERIC_EKS_MASK)>>4);
/* get the MAC length */
mac_len = (tvb_get_ntohs(tvb, (offset+1)) & WIMAX_MAC_HEADER_GENERIC_LEN);
/* get the CID */
mac_cid = tvb_get_ntohs(tvb, (offset+3));
/* display the Header Type (HT) */
proto_tree_add_item(generic_tree, hf_mac_header_generic_ht, tvb, offset, 3, FALSE);
/* display the Encryption Control (EC) */
proto_tree_add_item(generic_tree, hf_mac_header_generic_ec, tvb, offset, 3, FALSE);
/* display the sub-types (Type) */
proto_tree_add_item(generic_tree, hf_mac_header_generic_type_5, tvb, offset, 3, FALSE);
proto_tree_add_item(generic_tree, hf_mac_header_generic_type_4, tvb, offset, 3, FALSE);
proto_tree_add_item(generic_tree, hf_mac_header_generic_type_3, tvb, offset, 3, FALSE);
proto_tree_add_item(generic_tree, hf_mac_header_generic_type_2, tvb, offset, 3, FALSE);
proto_tree_add_item(generic_tree, hf_mac_header_generic_type_1, tvb, offset, 3, FALSE);
proto_tree_add_item(generic_tree, hf_mac_header_generic_type_0, tvb, offset, 3, FALSE);
/* display the Extended sub-header Field (ESF) */
proto_tree_add_item(generic_tree, hf_mac_header_generic_esf, tvb, offset, 3, FALSE);
/* display the CRC Indicator (CI) */
proto_tree_add_item(generic_tree, hf_mac_header_generic_ci, tvb, offset, 3, FALSE);
/* display the Encryption Key Sequence (EKS) */
proto_tree_add_item(generic_tree, hf_mac_header_generic_eks, tvb, offset, 3, FALSE);
/* display the reserved field */
proto_tree_add_item(generic_tree, hf_mac_header_generic_rsv, tvb, offset, 3, FALSE);
/* display the length */
proto_tree_add_item(generic_tree, hf_mac_header_generic_len, tvb, offset, 3, FALSE);
/* Decode and display the CID */
proto_tree_add_item(generic_tree, hf_mac_header_generic_cid, tvb, (offset+3), 2, FALSE);
/* Decode and display the HCS */
proto_tree_add_item(generic_tree, hf_mac_header_generic_hcs, tvb, (offset+5), 1, FALSE);
/* get the frame length without MAC header */
length = mac_len - WIMAX_MAC_HEADER_SIZE;
#ifdef DEBUG
proto_item_append_text(parent_item, "tvb length=%u, mac length=%u, frame length=%u,", tvb_len, mac_len, length);
#endif
/* set the offset for the frame */
offset += WIMAX_MAC_HEADER_SIZE;
/* the processing of the subheaders is order sensitive */
/* do not change the order */
if (mac_ec)
{
if (mac_ci)
{
if (length >= (gint)sizeof(mac_crc))
{
length -= sizeof(mac_crc);
}
}
generic_item = proto_tree_add_protocol_format(tree, proto_mac_header_generic_decoder, tvb, offset, length, "Encrypted PDU (%u bytes)", length);
/* add payload subtree */
generic_tree = proto_item_add_subtree(generic_item, ett_mac_data_pdu_decoder);
proto_tree_add_item(generic_tree, hf_mac_header_generic_value_bytes, tvb, offset, length, FALSE);
goto check_crc;
}
/* if Extended subheader is present */
if (mac_esf)
{ /* add the Extended subheader info */
proto_item_append_text(parent_item, ", Extended Subheader(s)");
ret_length = extended_subheader_decoder(tvb_new_subset(tvb, offset, length, length), pinfo, tree);
/* update the length and offset */
length -= ret_length;
offset += ret_length;
}
/* if Mesh subheader is present */
if (mesh_subheader)
{ /* update the info column */
if (check_col(pinfo->cinfo, COL_INFO))
{
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "Mesh subhdr");
}
/* add the Mesh subheader info */
proto_item_append_text(parent_item, ", Mesh Subheader");
/* display Mesh subheader type */
generic_item = proto_tree_add_protocol_format(tree, proto_mac_header_generic_decoder, tvb, offset, length, "Mesh subheader (2 bytes)");
/* add Mesh subheader subtree */
generic_tree = proto_item_add_subtree(generic_item, ett_mac_mesh_subheader_decoder);
/* decode and display the Mesh subheader */
proto_tree_add_item(generic_tree, hf_mac_header_generic_mesh_subheader, tvb, offset, 2, FALSE);
/* update the length and offset */
length -= 2;
offset += 2;
}
/* if Fast-feedback allocation (DL) subheader or Grant management (UL) subheader is present */
if (ffb_grant_mgmt_subheader)
{ /* check if it is downlink packet */
if (is_down_link(&(pinfo->src)))
{ /* Fast-feedback allocation (DL) subheader is present */
/* update the info column */
if (check_col(pinfo->cinfo, COL_INFO))
{
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "Fast-fb subhdr");
}
/* add the Fast-feedback subheader info */
proto_item_append_text(parent_item, ", Fast-feedback Subheader");
/* display Fast-feedback allocation subheader type */
generic_item = proto_tree_add_protocol_format(tree, proto_mac_header_generic_decoder, tvb, offset, length, "Fast-feedback allocation (DL) subheader (%u bytes)", length);
/* add Fast-feedback allocation subheader subtree */
generic_tree = proto_item_add_subtree(generic_item, ett_mac_fast_fb_subheader_decoder);
proto_tree_add_item(generic_tree, hf_mac_header_generic_fast_fb_subhd_alloc_offset, tvb, offset, 1, FALSE);
proto_tree_add_item(generic_tree, hf_mac_header_generic_fast_fb_subhd_fb_type, tvb, offset, 1, FALSE);
/* update the length and offset */
length -= 1;
offset += 1;
}
else /* Grant management (UL) subheader is present */
{ /* update the info column */
if (check_col(pinfo->cinfo, COL_INFO))
{
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "Grant mgmt subhdr");
}
/* add the Grant management subheader info */
proto_item_append_text(parent_item, ", Grant Management Subheader");
/* display Grant management subheader type */
generic_item = proto_tree_add_protocol_format(tree, proto_mac_header_generic_decoder, tvb, offset, 2, "Grant management (UL) subheader (2 bytes)");
/* add Grant management subheader subtree */
generic_tree = proto_item_add_subtree(generic_item, ett_mac_grant_mgmt_subheader_decoder);
scheduling_service_type = get_service_type();
switch (scheduling_service_type)
{
case SCHEDULE_SERVICE_TYPE_UGS:
proto_item_append_text(generic_item, ": It looks like UGS is the correct Scheduling Service Type");
break;
case SCHEDULE_SERVICE_TYPE_EXT_RTPS:
proto_item_append_text(generic_item, ": It looks like Extended rtPS is the correct Scheduling Service Type");
break;
case -1:
proto_item_append_text(generic_item, ": Cannot determine the correct Scheduling Service Type");
break;
default:
proto_item_append_text(generic_item, ": It looks like Piggyback Request is the correct Scheduling Service Type");
break;
}
/* Create tree for Scheduling Service Type (UGS) */
child_item = proto_tree_add_item(generic_tree, hf_mac_header_generic_grant_mgmt_ugs_tree, tvb, offset, 2, FALSE);
child_tree = proto_item_add_subtree(child_item, ett_mac_grant_mgmt_subheader_decoder);
proto_tree_add_item(child_tree, hf_mac_header_generic_grant_mgmt_subhd_ugs_si, tvb, offset, 2, FALSE);
proto_tree_add_item(child_tree, hf_mac_header_generic_grant_mgmt_subhd_ugs_pm, tvb, offset, 2, FALSE);
proto_tree_add_item(child_tree, hf_mac_header_generic_grant_mgmt_subhd_ugs_fli, tvb, offset, 2, FALSE);
proto_tree_add_item(child_tree, hf_mac_header_generic_grant_mgmt_subhd_ugs_fl, tvb, offset, 2, FALSE);
proto_tree_add_item(child_tree, hf_mac_header_generic_grant_mgmt_subhd_ugs_rsv, tvb, offset, 2, FALSE);
/* Create tree for Scheduling Service Type (Extended RTPS) */
child_item = proto_tree_add_item(generic_tree, hf_mac_header_generic_grant_mgmt_ext_rtps_tree, tvb, offset, 2, FALSE);
child_tree = proto_item_add_subtree(child_item, ett_mac_grant_mgmt_subheader_decoder);
proto_tree_add_item(child_tree, hf_mac_header_generic_grant_mgmt_subhd_ext_pbr, tvb, offset, 2, FALSE);
proto_tree_add_item(child_tree, hf_mac_header_generic_grant_mgmt_subhd_ext_fli, tvb, offset, 2, FALSE);
proto_tree_add_item(child_tree, hf_mac_header_generic_grant_mgmt_subhd_ext_fl, tvb, offset, 2, FALSE);
/* Create tree for Scheduling Service Type (Piggyback Request) */
child_item = proto_tree_add_item(generic_tree, hf_mac_header_generic_grant_mgmt_ext_pbr_tree, tvb, offset, 2, FALSE);
child_tree = proto_item_add_subtree(child_item, ett_mac_grant_mgmt_subheader_decoder);
proto_tree_add_item(child_tree, hf_mac_header_generic_grant_mgmt_subhd_pbr, tvb, offset, 2, FALSE);
/* update the length and offset */
length -= 2;
offset += 2;
}
}
/* if Fragmentation subheader is present */
if (fragment_subheader)
{ /* update the info column */
if (check_col(pinfo->cinfo, COL_INFO))
{
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "Frag subhdr");
}
/* add the Fragmentation subheader info */
proto_item_append_text(parent_item, ", Frag Subheader");
/* display Fragmentation subheader type */
generic_item = proto_tree_add_protocol_format(tree, proto_mac_header_generic_decoder, tvb, offset, ((arq_enabled|extended_type)?2:1), "Fragmentation subheader (%u bytes)", ((arq_enabled|extended_type)?2:1));
/* add Fragmentation subheader subtree */
generic_tree = proto_item_add_subtree(generic_item, ett_mac_frag_subheader_decoder);
/* Get the fragment type */
frag_type = (tvb_get_guint8(tvb, offset) & FRAGMENT_TYPE_MASK) >> 6;
if (arq_fb_payload)
{ /* get the sequence number */
seq_number = (tvb_get_ntohs(tvb, offset) & SEQ_NUMBER_MASK_11) >> 3;
/* decode and display the header */
proto_tree_add_item(generic_tree, hf_mac_header_generic_frag_subhd_fc_ext, tvb, offset, 2, FALSE);
proto_tree_add_item(generic_tree, hf_mac_header_generic_frag_subhd_bsn, tvb, offset, 2, FALSE);
proto_tree_add_item(generic_tree, hf_mac_header_generic_frag_subhd_rsv_ext, tvb, offset, 2, FALSE);
/* update the length and offset */
length -= 2;
offset += 2;
}
else
{
if (extended_type)
{ /* get the sequence number */
seq_number = (tvb_get_ntohs(tvb, offset) & SEQ_NUMBER_MASK_11) >> 3;
/* decode and display the header */
proto_tree_add_item(generic_tree, hf_mac_header_generic_frag_subhd_fc_ext, tvb, offset, 2, FALSE);
proto_tree_add_item(generic_tree, hf_mac_header_generic_frag_subhd_fsn_ext, tvb, offset, 2, FALSE);
proto_tree_add_item(generic_tree, hf_mac_header_generic_frag_subhd_rsv_ext, tvb, offset, 2, FALSE);
/* update the length and offset */
length -= 2;
offset += 2;
}
else
{ /* get the sequence number */
seq_number = (tvb_get_guint8(tvb, offset) & SEQ_NUMBER_MASK) >> 3;
/* decode and display the header */
proto_tree_add_item(generic_tree, hf_mac_header_generic_frag_subhd_fc, tvb, offset, 1, FALSE);
proto_tree_add_item(generic_tree, hf_mac_header_generic_frag_subhd_fsn, tvb, offset, 1, FALSE);
proto_tree_add_item(generic_tree, hf_mac_header_generic_frag_subhd_rsv, tvb, offset, 1, FALSE);
/* update the length and offset */
length -= 1;
offset += 1;
}
}
frag_len = length;
}
else /* ??? default fragment type: no fragment */
{
frag_type = NO_FRAG;
}
/* Decode the MAC payload if there is any */
if (mac_ci)
{
if (length < (gint)sizeof(mac_crc))
{ /* display error message */
proto_tree_add_protocol_format(tree, proto_mac_header_generic_decoder, tvb, offset, length, "Error - the frame is too short (%u bytes)", length);
return;
}
length -= sizeof(mac_crc);
}
while (length > 0)
{
frag_len = length; /* Can be changed by Packing subhdr */
if (packing_subheader)
{
packing_length = decode_packing_subheader(tvb, pinfo, tree, length, offset, parent_item);
length -= packing_length;
offset += packing_length;
generic_item = proto_tree_add_protocol_format(tree, proto_mac_header_generic_decoder, tvb, offset, frag_len, "Data transport PDU (%u bytes)", frag_len);
/* add payload subtree */
generic_tree = proto_item_add_subtree(generic_item, ett_mac_data_pdu_decoder);
proto_tree_add_item(generic_tree, hf_mac_header_generic_value_bytes, tvb, offset, frag_len, FALSE);
}
/* defragment first if it is fragmented */
if (frag_type == NO_FRAG)
{ /* not fragmented payload */
payload_tvb = tvb_new_subset(tvb, offset, length, length);
payload_length = length;
new_payload_len = length;
}
else /* fragmented payload */
{ /* add the frag */
/* Make sure cid will not match a previous packet with different data */
for (i = 0; i < MAX_CID; i++)
{
if (cid_list[i] == mac_cid)
{
cid_base = i * (0xFFFFFFFF / MAX_CID);
break;
}
if (cid_list[i] == 0)
{
cid_list[i] = mac_cid;
cid_base = i * (0xFFFFFFFF / MAX_CID);
break;
}
}
cid_index = i;
while (pinfo->fd->num > cid_adj_array_size)
{
cid_adj_array_size += 1024;
cid_adj_array = g_realloc(cid_adj_array, sizeof(guint) * cid_adj_array_size);
frag_num_array = g_realloc(frag_num_array, sizeof(guint8) * cid_adj_array_size);
/* Clear the added memory */
memset(&cid_adj_array[cid_adj_array_size - 1024], 0, sizeof(guint) * 1024);
}
if (first_gmh)
{
/* New cid_adjust for each packet with fragment(s) */
cid_adjust[cid_index] += cid_vernier[cid_index];
/* cid_vernier must always be 0 at start of packet. */
cid_vernier[cid_index] = 0;
}
/* Create artificial sequence numbers. */
frag_number[cid_index]++;
if (frag_type == FIRST_FRAG)
{
frag_number[cid_index] = 0;
}
if (cid_adj_array[pinfo->fd->num])
{
/* We apparently just clicked on the packet again. */
cid_adjust[cid_index] = cid_adj_array[pinfo->fd->num];
/* Set the frag_number at start of packet. */
if (first_gmh)
{
frag_number[cid_index] = frag_num_array[pinfo->fd->num];
}
} else {
/* Save for next time we click on this packet. */
cid_adj_array[pinfo->fd->num] = cid_adjust[cid_index];
if (first_gmh)
{
frag_num_array[pinfo->fd->num] = frag_number[cid_index];
}
}
/* Reset in case we stay in this while() loop to finish the packet. */
first_gmh = FALSE;
cid = cid_base + cid_adjust[cid_index] + cid_vernier[cid_index];
/* Save address pointers. */
save_src = pinfo->src;
save_dst = pinfo->dst;
/* Use dl_src and dl_dst in defrag. */
pinfo->src = pinfo->dl_src;
pinfo->dst = pinfo->dl_dst;
payload_frag = fragment_add_seq(tvb, offset, pinfo, cid, payload_frag_table, frag_number[cid_index], frag_len, ((frag_type==LAST_FRAG)?0:1));
/* Restore address pointers. */
pinfo->src = save_src;
pinfo->dst = save_dst;
if (frag_type == LAST_FRAG)
{
/* Make sure fragment_add_seq() sees next one as a new frame. */
cid_vernier[cid_index]++;
}
/* Don't show reassem packet until last frag. */
proto_tree_add_text(tree, tvb, offset, frag_len, "Payload Fragment (%d bytes)", frag_len);
if (payload_frag && frag_type == LAST_FRAG)
{ /* defragmented completely */
payload_length = payload_frag->len;
/* create the new tvb for defragmented frame */
payload_tvb = tvb_new_real_data(payload_frag->data, payload_length, payload_length);
/* attach the payload_tvb to tvb so that it will be cleaned up when tvb is cleaned up */
tvb_set_child_real_data_tvbuff(tvb, payload_tvb);
/* add the defragmented data to the data source list */
add_new_data_source(pinfo, payload_tvb, "Reassembled WiMax MAC payload");
/* save the tvb langth */
new_payload_len = payload_length;
}
else /* error or defragment is not complete */
{
payload_tvb = NULL;
#ifdef DEBUG /* for debug only */
/* if (frag_type == LAST_FRAG)*/
{ /* error */
/* update the info column */
if (check_col(pinfo->cinfo, COL_INFO))
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "Dropped the incomplete frame");
}
#endif
#if 0
if (frag_type == FIRST_FRAG)
{ /* Set up to decode the first fragment (even though next fragment not read yet) */
payload_tvb = tvb_new_subset(tvb, offset, length, length);
payload_length = length;
frag_len = length;
}
#endif
}
}
/* process the defragmented payload */
if (payload_tvb)
{ /* reset the payload_offset */
payload_offset = 0;
/* process the payload */
if (payload_length > 0)
{
if (!new_payload_len)
continue;
/* if ARQ Feedback payload is present, it should be the first SDU */
if (first_arq_fb_payload && arq_fb_payload)
{ /* decode and display the ARQ feedback payload */
first_arq_fb_payload = FALSE;
ret_length = arq_feedback_payload_decoder(tvb_new_subset(payload_tvb, payload_offset, new_payload_len, new_payload_len), pinfo, generic_tree, parent_item);
#ifdef DEBUG /* for debug only */
if (ret_length != new_payload_len)
{ /* error */
/* update the info column */
if (check_col(pinfo->cinfo, COL_INFO))
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "incorrect ARQ fb payload size");
}
#endif
}
else /* decode SDUs */
{ /* check the payload type */
if (mac_cid == cid_padding)
{ /* update the info column */
if (check_col(pinfo->cinfo, COL_INFO))
{
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "Padding CID");
}
/* get the parent */
generic_item = proto_tree_get_parent(tree);
/* add the MAC header info */
proto_item_append_text(generic_item, ", Padding CID");
/* display padding CID */
generic_item = proto_tree_add_protocol_format(tree, proto_mac_header_generic_decoder, payload_tvb, payload_offset, new_payload_len, "Padding CID (%u bytes)", new_payload_len);
/* add payload subtree */
generic_tree = proto_item_add_subtree(generic_item, ett_mac_header_generic_decoder);
/* display the Padding CID payload in Hex */
proto_tree_add_item(generic_tree, hf_mac_header_generic_value_bytes, payload_tvb, payload_offset, new_payload_len, FALSE);
}
else if ((mac_cid <= (2 * global_cid_max_basic)) || (mac_cid == cid_aas_ranging)
|| (mac_cid >= cid_normal_multicast))
{ /* MAC management message */
dissect_mac_mgmt_msg_decoder(tvb_new_subset(payload_tvb, payload_offset, new_payload_len, new_payload_len), pinfo, tree);
}
else /* data transport PDU */
{ /* update the info column */
if (check_col(pinfo->cinfo, COL_INFO))
{
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "Data");
}
/* add the MAC payload info */
proto_item_append_text(parent_item, ", Data");
/* display payload info */
if ((new_payload_len + payload_offset) > payload_length)
{
new_tvb_len = new_payload_len - payload_offset;
}
else
{
new_tvb_len = new_payload_len;
}
if (frag_type == LAST_FRAG || frag_type == NO_FRAG)
{
if (frag_type == NO_FRAG)
{
str_ptr = data_str;
new_payload_len = frag_len;
}
else
{
str_ptr = reassem_str;
}
{
data_pdu_tvb = tvb_new_subset(payload_tvb, payload_offset, new_tvb_len, new_tvb_len);
generic_item = proto_tree_add_protocol_format(tree, proto_mac_header_generic_decoder, data_pdu_tvb, payload_offset, new_payload_len, str_ptr, new_payload_len);
/* add payload subtree */
generic_tree = proto_item_add_subtree(generic_item, ett_mac_data_pdu_decoder);
/* check the data type */
if (tvb_get_guint8(payload_tvb, payload_offset) == IP_HEADER_BYTE)
{
mac_payload_handle = find_dissector("ip");
if (mac_payload_handle)
call_dissector(mac_payload_handle, tvb_new_subset(payload_tvb, payload_offset, new_tvb_len, new_tvb_len), pinfo, generic_tree);
else /* display the Generic MAC Header in Hex */
proto_tree_add_item(generic_tree, hf_mac_header_generic_value_bytes, payload_tvb, payload_offset, new_tvb_len, FALSE);
}
else /* display the Generic MAC Header in Hex */
proto_tree_add_item(generic_tree, hf_mac_header_generic_value_bytes, payload_tvb, payload_offset, new_tvb_len, FALSE);
}
}
}
}
payload_length -= new_payload_len;
payload_offset += new_payload_len;
} /* end of while loop */
} /* end of payload processing */
length -= frag_len;
offset += frag_len;
} /* end of payload decoding */
check_crc:
/* Decode and display the CRC if it is present */
if (mac_ci)
{
/* add the CRC info */
proto_item_append_text(parent_item, ", CRC");
/* 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(tree, hf_mac_header_generic_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(tree, proto_mac_header_generic_decoder, tvb, 0, tvb_len, "CRC missing - the frame is too short (%u bytes)", tvb_len);
}
}
else /* CRC is not included */
{ /* add the CRC info */
proto_item_append_text(parent_item, ", No CRC");
/* display message */
proto_tree_add_protocol_format(tree, proto_mac_header_generic_decoder, tvb, 0, tvb_len, "CRC is not included in this frame!");
}
}
}
static gint extended_subheader_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
gint offset = 0;
gint length, ext_length, ubyte, i;
proto_item *ti = NULL;
proto_tree *sub_tree = NULL;
proto_tree *ti_tree = NULL;
/* update the info column */
if (check_col(pinfo->cinfo, COL_INFO))
{
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "Ext subhdrs");
}
/* Get the tvb reported length */
length = tvb_reported_length(tvb);
if (!length)
{ /* display the error message */
proto_tree_add_protocol_format(tree, proto_mac_header_generic_decoder, tvb, offset, length, "Error: extended subheader tvb is empty ! (%u bytes)", length);
return length;
}
/* Get the length of the extended subheader group */
ext_length = tvb_get_guint8(tvb, offset);
/* display subheader type */
ti = proto_tree_add_protocol_format(tree, proto_mac_header_generic_decoder, tvb, offset, length, "Extended subheader group (%u bytes)", ext_length);
/* add extended subheader subtree */
sub_tree = proto_item_add_subtree(ti, ett_mac_ext_subheader_decoder);
/* decode and display the extended subheaders */
for (i=1; i<ext_length;)
{ /* Get the extended subheader type */
ubyte = (tvb_get_guint8(tvb, (offset+i)) & EXTENDED_SUB_HEADER_TYPE_MASK);
/* decode and display the extended subheader type (MSB) */
proto_tree_add_item(sub_tree, hf_mac_header_generic_ext_subheader_rsv, tvb, (offset+i), 1, FALSE);
/* for downlink */
if (is_down_link(&(pinfo->src))) /* for downlink */
{ /* decode and display the extended subheader type */
ti = proto_tree_add_item(sub_tree, hf_mac_header_generic_ext_subheader_type_dl, tvb, (offset+i), 1, FALSE);
/* add subtree */
ti_tree = proto_item_add_subtree(ti, ett_mac_ext_subheader_dl_decoder);
i++;
switch (ubyte)
{
case SDU_SN:
/* decode and display the extended sdu sn subheader */
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_sdu_sn, tvb, (offset+i), 1, FALSE);
i++;
break;
case DL_SLEEP_CONTROL:
/* decode and display the extended dl sleep control subheader */
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_dl_sleep_control_pscid, tvb, (offset+i), 3, FALSE);
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_dl_sleep_control_op, tvb, (offset+i), 3, FALSE);
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_dl_sleep_control_fswe, tvb, (offset+i), 3, FALSE);
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_dl_sleep_control_fswb, tvb, (offset+i), 3, FALSE);
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_dl_sleep_control_rsv, tvb, (offset+i), 3, FALSE);
i += 3;
break;
case FEEDBACK_REQ:
/* decode and display the extended feedback request subheader */
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_fb_req_uiuc, tvb, (offset+i), 3, FALSE);
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_fb_req_fb_type, tvb, (offset+i), 3, FALSE);
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_fb_req_ofdma_symbol_offset, tvb, (offset+i), 3, FALSE);
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_fb_req_subchannel_offset, tvb, (offset+i), 3, FALSE);
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_fb_req_slots, tvb, (offset+i), 3, FALSE);
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_fb_req_frame_offset, tvb, (offset+i), 3, FALSE);
i += 3;
break;
case SN_REQ:
/* decode and display the extended SN request subheader */
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_sn_req_rep_ind_1, tvb, (offset+i), 1, FALSE);
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_sn_req_rep_ind_2, tvb, (offset+i), 1, FALSE);
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_sn_req_rsv, tvb, (offset+i), 1, FALSE);
i++;
break;
case PDU_SN_SHORT_DL:
/* decode and display the extended pdu sn (short) subheader */
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_pdu_sn_short, tvb, (offset+i), 1, FALSE);
i++;
break;
case PDU_SN_LONG_DL:
/* decode and display the extended pdu sn (long) subheader */
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_pdu_sn_long, tvb, (offset+i), 2, FALSE);
i += 2;
break;
default: /* reserved */
break;
}
}
else /* for uplink */
{ /* decode and display the extended subheader type */
ti = proto_tree_add_item(sub_tree, hf_mac_header_generic_ext_subheader_type_ul, tvb, (offset+i), 1, FALSE);
/* add subtree */
ti_tree = proto_item_add_subtree(ti, ett_mac_ext_subheader_ul_decoder);
i++;
switch (ubyte)
{
case MIMO_MODE_FEEDBACK:
/* decode and display the extended MIMO Mode Feedback subheader */
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_mimo_mode_fb_type, tvb, (offset+i), 1, FALSE);
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_mimo_fb_content, tvb, (offset+i), 1, FALSE);
i++;
break;
case UL_TX_POWER_REPORT:
/* decode and display the extended ul tx power report subheader */
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_ul_tx_pwr_rep, tvb, (offset+i), 1, FALSE);
i++;
break;
case MINI_FEEDBACK:
/* decode and display the extended MINI Feedback subheader */
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_mini_fb_type, tvb, (offset+i), 2, FALSE);
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_mini_fb_content, tvb, (offset+i), 2, FALSE);
i += 2;
break;
case PDU_SN_SHORT_UL:
/* decode and display the extended pdu sn (short) subheader */
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_pdu_sn_short, tvb, (offset+i), 1, FALSE);
i++;
break;
case PDU_SN_LONG_UL:
/* decode and display the extended pdu sn (long) subheader */
proto_tree_add_item(ti_tree, hf_mac_header_generic_ext_subheader_pdu_sn_long, tvb, (offset+i), 2, FALSE);
i += 2;
break;
default: /* reserved */
break;
}
}
}
/* return the extended subheader length */
return ext_length;
}
static gint arq_feedback_payload_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_item *parent_item)
{
gint length, i;
gint offset;
gint last_ie = 0;
gint ack_type, num_maps, seq_format;
gint word2, word3;
proto_item *ti = NULL;
proto_item *sub_ti = NULL;
proto_tree *sub_tree = NULL;
/* update the info column */
if (check_col(pinfo->cinfo, COL_INFO))
{
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "ARQ feedback payld");
}
/* add the MAC header info */
proto_item_append_text(parent_item, ", ARQ feedback payload");
/* reset the offset */
offset = 0;
/* Get the tvb reported length */
length = tvb_reported_length(tvb);
if (!length)
{ /* display the error message */
proto_tree_add_protocol_format(tree, proto_mac_header_generic_decoder, tvb, offset, length, "Error: ARQ feedback payload tvb is empty ! (%u bytes)", length);
return length;
}
/* display subheader type */
ti = proto_tree_add_protocol_format(tree, proto_mac_header_generic_decoder, tvb, offset, length, "ARQ feedback payload ");
/* add extended subheader subtree */
sub_tree = proto_item_add_subtree(ti, ett_mac_arq_fb_payload_decoder);
/* decode and display the ARQ Feedback IEs */
while (!last_ie)
{ /* decode and display CID */
proto_tree_add_item(sub_tree, hf_mac_header_generic_arq_fb_ie_cid, tvb, offset, 2, FALSE);
/* move to next 16-bit word */
offset += 2;
/* Get the 2nd 16-bit */
word2 = tvb_get_ntohs(tvb, offset);
/* get the last bit */
last_ie = (word2 & ARQ_FB_IE_LAST_BIT_MASK);
/* get the ACK type */
ack_type = ((word2 & ARQ_FB_IE_ACK_TYPE_MASK) >> 13);
/* get the number of ACK maps */
num_maps = (word2 & ARQ_FB_IE_NUM_MAPS_MASK) + 1;
/* decode and display the 2nd word */
proto_tree_add_item(sub_tree, hf_mac_header_generic_arq_fb_ie_last, tvb, offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_mac_header_generic_arq_fb_ie_ack_type, tvb, offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_mac_header_generic_arq_fb_ie_bsn, tvb, offset, 2, FALSE);
/* decode and display the 3rd word */
if (ack_type != 1)
{
sub_ti = proto_tree_add_item(sub_tree, hf_mac_header_generic_arq_fb_ie_num_maps, tvb, offset, 2, FALSE);
/* move to next 16-bit word */
offset += 2;
proto_item_append_text(sub_ti, " (%d map(s))", num_maps);
for (i = 0; i < num_maps; i++)
{
if (ack_type != 3)
{
proto_tree_add_item(sub_tree, hf_mac_header_generic_arq_fb_ie_sel_ack_map, tvb, offset, 2, FALSE);
}
else
{ /* Get the next 16-bit */
word3 = tvb_get_ntohs(tvb, offset);
/* get the sequence format */
seq_format = (word3 & ARQ_FB_IE_SEQ_FORMAT_MASK);
/* decode and display the sequence format */
proto_tree_add_item(sub_tree, hf_mac_header_generic_arq_fb_ie_seq_format, tvb, offset, 2, FALSE);
if (!seq_format)
{
proto_tree_add_item(sub_tree, hf_mac_header_generic_arq_fb_ie_seq_ack_map_2, tvb, offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_mac_header_generic_arq_fb_ie_seq1_length_6, tvb, offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_mac_header_generic_arq_fb_ie_seq2_length_6, tvb, offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_mac_header_generic_arq_fb_ie_rsv, tvb, offset, 2, FALSE);
}
else
{
proto_tree_add_item(sub_tree, hf_mac_header_generic_arq_fb_ie_seq_ack_map, tvb, offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_mac_header_generic_arq_fb_ie_seq1_length, tvb, offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_mac_header_generic_arq_fb_ie_seq2_length, tvb, offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_mac_header_generic_arq_fb_ie_seq3_length, tvb, offset, 2, FALSE);
}
}
/* move to next 16-bit word */
offset += 2;
}
}
else
{
/* Number of ACK Maps bits are reserved when ACK TYPE == 1 */
proto_tree_add_item(sub_tree, hf_ack_type_reserved, tvb, offset, 2, FALSE);
/* move to next 16-bit word */
offset += 2;
}
}
/* append text */
proto_item_append_text(ti,"(%u bytes)", offset);
/* return the offset */
return offset;
}
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