epan/dissectors/packet-lltd.c

   1 /* packet-lltd.c
   2  * Routines for LLTD dissection
   3  * Copyright 2012, Michael Mann
   4  *
   5  * Wireshark - Network traffic analyzer
   6  * By Gerald Combs <gerald@wireshark.org>
   7  * Copyright 1998 Gerald Combs
   8  *
   9  * SPDX-License-Identifier: GPL-2.0-or-later
  10  */
  11
  12 #include "config.h"
  13
  14 #include <epan/packet.h>
  15 #include <epan/etypes.h>
  16 #include <epan/expert.h>
  17 #include <epan/tfs.h>
  18 #include <wsutil/array.h>
  19
  20 void proto_register_lltd(void);
  21 void proto_reg_handoff_lltd(void);
  22
  23 static dissector_handle_t lltd_handle;
  24
  25 static int proto_lltd;
  26
  27 static int hf_lltd_version;
  28 static int hf_lltd_type_of_service;
  29 static int hf_lltd_reserved;
  30 static int hf_lltd_discovery_func;
  31 static int hf_lltd_discovery_real_dest_addr;
  32 static int hf_lltd_discovery_real_src_addr;
  33 static int hf_lltd_discovery_xid;
  34 static int hf_lltd_discovery_seq_num;
  35 static int hf_lltd_discover_gen_num;
  36 static int hf_lltd_discover_num_stations;
  37 static int hf_lltd_discover_station;
  38 static int hf_lltd_hello_gen_num;
  39 static int hf_lltd_hello_current_address;
  40 static int hf_lltd_hello_apparent_address;
  41 static int hf_lltd_tlv_type;
  42 static int hf_lltd_tlv_length;
  43 static int hf_lltd_host_id;
  44 static int hf_lltd_char_p;
  45 static int hf_lltd_char_x;
  46 static int hf_lltd_char_f;
  47 static int hf_lltd_char_m;
  48 static int hf_lltd_char_l;
  49 static int hf_lltd_char_reserved;
  50 static int hf_lltd_physical_medium;
  51 static int hf_lltd_wireless_mode;
  52 static int hf_lltd_bssid;
  53 static int hf_lltd_ssid;
  54 static int hf_lltd_ipv4_address;
  55 static int hf_lltd_ipv6_address;
  56 static int hf_lltd_max_operation_rate;
  57 static int hf_lltd_performance_count_freq;
  58 static int hf_lltd_link_speed;
  59 static int hf_lltd_rssi;
  60 static int hf_lltd_machine_name;
  61 static int hf_lltd_support_info;
  62 static int hf_lltd_device_uuid;
  63 static int hf_lltd_qos_char_e;
  64 static int hf_lltd_qos_char_q;
  65 static int hf_lltd_qos_char_p;
  66 static int hf_lltd_qos_char_reserved;
  67 static int hf_lltd_80211_physical_medium;
  68 static int hf_lltd_sees_list_working_set;
  69 static int hf_lltd_repeater_ap_lineage;
  70 static int hf_lltd_emit_num_descs;
  71 static int hf_lltd_emit_type;
  72 static int hf_lltd_emit_pause;
  73 static int hf_lltd_emit_src_addr;
  74 static int hf_lltd_emit_dest_addr;
  75 static int hf_lltd_queryresp_more_descs;
  76 static int hf_lltd_queryresp_memory_descs;
  77 static int hf_lltd_queryresp_num_descs;
  78 static int hf_lltd_queryresp_type;
  79 static int hf_lltd_queryresp_real_src_addr;
  80 static int hf_lltd_queryresp_ethernet_src_addr;
  81 static int hf_lltd_queryresp_ethernet_dest_addr;
  82 static int hf_lltd_flat_crc_bytes;
  83 static int hf_lltd_flat_crc_packets;
  84 static int hf_lltd_query_large_tlv_type;
  85 static int hf_lltd_query_large_tlv_offset;
  86 static int hf_lltd_querylargeresp_more_descs;
  87 static int hf_lltd_querylargeresp_memory_descs;
  88 static int hf_lltd_querylargeresp_num_descs;
  89 static int hf_lltd_querylargeresp_data;
  90
  91 static int hf_lltd_qos_diag_func;
  92 static int hf_lltd_qos_real_dest_addr;
  93 static int hf_lltd_qos_real_src_addr;
  94 static int hf_lltd_qos_seq_num;
  95 static int hf_lltd_qos_initialize_interrupt_mod;
  96 static int hf_lltd_qos_ready_sink_link_speed;
  97 static int hf_lltd_qos_ready_perf_count_freq;
  98 static int hf_lltd_qos_probe_controller_transmit_timestamp;
  99 static int hf_lltd_qos_probe_sink_receive_timestamp;
 100 static int hf_lltd_qos_probe_sink_transmit_timestamp;
 101 static int hf_lltd_qos_probe_test_type;
 102 static int hf_lltd_qos_probe_packet_id;
 103 static int hf_lltd_qos_probe_t;
 104 static int hf_lltd_qos_probe_8021p_value;
 105 static int hf_lltd_qos_probe_payload;
 106 static int hf_lltd_qos_error_value;
 107 static int hf_lltd_qos_count_snapshot_history;
 108 static int hf_lltd_qos_query_resp_r;
 109 static int hf_lltd_qos_query_resp_e;
 110 static int hf_lltd_qos_query_resp_num_events;
 111 static int hf_lltd_qos_query_resp_controller_timestamp;
 112 static int hf_lltd_qos_query_resp_sink_timestamp;
 113 static int hf_lltd_qos_query_resp_packet_id;
 114 static int hf_lltd_qos_query_resp_reserved;
 115 static int hf_lltd_qos_counter_result_subsec_span;
 116 static int hf_lltd_qos_counter_result_byte_scale;
 117 static int hf_lltd_qos_counter_result_packet_scale;
 118 static int hf_lltd_qos_counter_result_history_size;
 119 static int hf_lltd_qos_snapshot_bytes_recv;
 120 static int hf_lltd_qos_snapshot_packets_recv;
 121 static int hf_lltd_qos_snapshot_bytes_sent;
 122 static int hf_lltd_qos_snapshot_packets_sent;
 123
 124
 125 static int ett_lltd;
 126 static int ett_base_header;
 127 static int ett_discover_stations;
 128 static int ett_tlv;
 129 static int ett_tlv_item;
 130 static int ett_characteristics;
 131 static int ett_qos_characteristics;
 132 static int ett_repeater_ap_lineage;
 133 static int ett_emitee_descs;
 134 static int ett_emitee_descs_item;
 135 static int ett_recvee_descs;
 136 static int ett_recvee_descs_item;
 137 static int ett_qos_event_descs;
 138 static int ett_qos_event_item;
 139 static int ett_qos_snapshot_list;
 140 static int ett_qos_snapshot_item;
 141
 142 static expert_field ei_lltd_tlv_length_invalid;
 143 static expert_field ei_lltd_too_many_paths;
 144 static expert_field ei_lltd_type_of_service;
 145 static expert_field ei_lltd_char_reserved;
 146 static expert_field ei_lltd_qos_seq_num;
 147 static expert_field ei_lltd_discovery_func;
 148 static expert_field ei_lltd_tlv_type;
 149 static expert_field ei_lltd_qos_diag_func;
 150
 151 #define LLTD_CHARACTERISTIC_P_MASK          0x80000000
 152 #define LLTD_CHARACTERISTIC_X_MASK          0x40000000
 153 #define LLTD_CHARACTERISTIC_F_MASK          0x20000000
 154 #define LLTD_CHARACTERISTIC_M_MASK          0x10000000
 155 #define LLTD_CHARACTERISTIC_L_MASK          0x08000000
 156 #define LLTD_CHARACTERISTIC_RESERVE_MASK    0x07FFFFFF
 157
 158 #define LLTD_QOS_CHARACTERISTIC_E_MASK          0x80000000
 159 #define LLTD_QOS_CHARACTERISTIC_Q_MASK          0x40000000
 160 #define LLTD_QOS_CHARACTERISTIC_P_MASK          0x20000000
 161 #define LLTD_QOS_CHARACTERISTIC_RESERVE_MASK    0x1FFFFFFF
 162
 163 #define LLTD_QUERY_RESP_M_MASK                  0x8000
 164 #define LLTD_QUERY_RESP_E_MASK                  0x4000
 165 #define LLTD_QUERY_RESP_NUM_DESCS_MASK          0x3FFF
 166
 167 static const value_string lltd_tos_vals[] = {
 168     { 0,     "Topology discovery" },
 169     { 1,     "Quick discovery" },
 170     { 2,     "QoS Diagnostics" },
 171
 172     { 0,                    NULL }
 173 };
 174
 175 static const value_string lltd_discovery_vals[] = {
 176     { 0x00,     "Discover" },
 177     { 0x01,     "Hello" },
 178     { 0x02,     "Emit" },
 179     { 0x03,     "Train" },
 180     { 0x04,     "Probe" },
 181     { 0x05,     "Ack" },
 182     { 0x06,     "Query" },
 183     { 0x07,     "QueryResp" },
 184     { 0x08,     "Reset" },
 185     { 0x09,     "Charge" },
 186     { 0x0A,     "Flat" },
 187     { 0x0B,     "QueryLargeTlv" },
 188     { 0x0C,     "QueryLargeTlvResp" },
 189
 190     { 0,                    NULL }
 191 };
 192
 193 static const value_string lltd_qos_diag_vals[] = {
 194     { 0x00,     "QosInitializeSink" },
 195     { 0x01,     "QosReady" },
 196     { 0x02,     "QosProbe" },
 197     { 0x03,     "QosQuery" },
 198     { 0x04,     "QosQueryResp" },
 199     { 0x05,     "QosReset" },
 200     { 0x06,     "QosError" },
 201     { 0x07,     "QosAck" },
 202     { 0x08,     "QosCounterSnapshot" },
 203     { 0x09,     "QosCounterResult" },
 204     { 0x0A,     "QosCounterLease" },
 205
 206     { 0,                    NULL }
 207 };
 208
 209 static const value_string lltd_tlv_type_vals[] = {
 210     { 0x00,     "End of Property List" },
 211     { 0x01,     "Host ID" },
 212     { 0x02,     "Characteristics" },
 213     { 0x03,     "Physical Medium" },
 214     { 0x04,     "Wireless Mode" },
 215     { 0x05,     "802.11 BSSID" },
 216     { 0x06,     "802.11 SSID" },
 217     { 0x07,     "IPv4 Address" },
 218     { 0x08,     "IPv6 Address" },
 219     { 0x09,     "802.11 Maximum Operation Rate" },
 220     { 0x0A,     "Performance Counter Frequency" },
 221     { 0x0C,     "Link Speed" },
 222     { 0x0D,     "802.11 RSSI" },
 223     { 0x0E,     "Icon Image" },
 224     { 0x0F,     "Machine Name" },
 225     { 0x10,     "Support Information" },
 226     { 0x11,     "Friendly Name" },
 227     { 0x12,     "Device UUID" },
 228     { 0x13,     "Hardware ID" },
 229     { 0x14,     "QoS Characteristics" },
 230     { 0x15,     "802.11 Physical Medium" },
 231     { 0x16,     "AP Association Table" },
 232     { 0x18,     "Detailed Icon Image" },
 233     { 0x19,     "Sees-List Working Set" },
 234     { 0x1A,     "Component Table" },
 235     { 0x1B,     "Repeater AP Lineage" },
 236     { 0x1C,     "Repeater AP Table" },
 237
 238     { 0,                    NULL }
 239 };
 240
 241 static const value_string lltd_wireless_mode_vals[] = {
 242     { 0x00,     "802.11 IBSS or ad-hoc mode" },
 243     { 0x01,     "802.11 infrastructure mode" },
 244
 245     { 0,                    NULL }
 246 };
 247
 248 static const value_string lltd_80211_physical_medium_vals[] = {
 249     { 0x00,     "Unknown" },
 250     { 0x01,     "FHSS 2.4 GHz" },
 251     { 0x02,     "DSSS 2.4 GHz" },
 252     { 0x03,     "IR Baseband" },
 253     { 0x04,     "OFDM 5 GHz" },
 254     { 0x05,     "HRDSSS" },
 255     { 0x06,     "ERP" },
 256
 257     { 0,                    NULL }
 258 };
 259
 260 static const value_string lltd_emit_type_vals[] = {
 261     { 0x00,     "Train" },
 262     { 0x01,     "Probe" },
 263
 264     { 0,                    NULL }
 265 };
 266
 267 static const value_string lltd_queryresp_type_vals[] = {
 268     { 0x00,     "Probe" },
 269     { 0x01,     "ARP" },
 270
 271     { 0,                    NULL }
 272 };
 273
 274 static const value_string lltd_query_large_tlv_type_vals[] = {
 275     { 0x0E,     "Icon Image" },
 276     { 0x11,     "Friendly Name" },
 277     { 0x13,     "Hardware ID" },
 278     { 0x16,     "AP Association Table" },
 279     { 0x18,     "Detailed Icon Image" },
 280     { 0x1A,     "Component Table" },
 281     { 0x1C,     "Repeater AP Table" },
 282
 283     { 0,                    NULL }
 284 };
 285
 286 static const value_string lltd_interrupt_mod_vals[] = {
 287     { 0x00,     "Disable interrupt moderation" },
 288     { 0x01,     "Enable interrupt moderation" },
 289     { 0xFF,     "Use existing interrupt moderation setting" },
 290
 291     { 0,                    NULL }
 292 };
 293
 294 static const value_string lltd_qos_probe_test_type_vals[] = {
 295     { 0x00,     "Timed Probe" },
 296     { 0x01,     "Probegap originating from the controller" },
 297     { 0x02,     "Probegap originating from the sink" },
 298
 299     { 0,                    NULL }
 300 };
 301
 302 static const value_string lltd_qos_error_vals[] = {
 303     { 0x00,     "Insufficient Resources" },
 304     { 0x01,     "Busy. Try again later" },
 305     { 0x02,     "Interrupt moderation not available" },
 306
 307     { 0,                    NULL }
 308 };
 309
 310
 311 static const true_false_string tfs_full_half_duplex = { "Full Duplex", "Half Duplex" };
 312
 313
 314 static int
 315 dissect_lltd_tlv(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, uint32_t offset, bool* end)
 316 {
 317     uint8_t    type, length = 0;
 318     proto_item *tlv_item, *type_item;
 319     proto_tree *tlv_tree, *type_tree;
 320     uint32_t i, temp32;
 321
 322     type = tvb_get_uint8(tvb, offset);
 323     if (type == 0)
 324     {
 325         /* End of Property type doesn't have length */
 326         tlv_tree = proto_tree_add_subtree(tree, tvb, offset, 1, ett_tlv_item, &tlv_item, "TLV Item (End of Property List)");
 327         *end = true;
 328     }
 329     else
 330     {
 331         length = tvb_get_uint8(tvb, offset+1);
 332         tlv_tree = proto_tree_add_subtree_format(tree, tvb, offset, length+2, ett_tlv_item, &tlv_item,
 333                     "TLV Item (%s)", val_to_str(type, lltd_tlv_type_vals, "Unknown (0x%02x)"));
 334         *end = false;
 335     }
 336
 337     proto_tree_add_item(tlv_tree, hf_lltd_tlv_type, tvb, offset, 1, ENC_NA);
 338     if (type != 0)
 339         proto_tree_add_item(tlv_tree, hf_lltd_tlv_length, tvb, offset+1, 1, ENC_NA);
 340
 341
 342     if ((type != 0) && (length > tvb_reported_length_remaining(tvb, offset+2)))
 343     {
 344         expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_length_invalid, "TLV Length field too big");
 345         *end = true;
 346         return 2;
 347     }
 348
 349     switch(type)
 350     {
 351     case 0x00: /* End of Property List */
 352         /* No data, no length field */
 353         return 1;
 354     case 0x01: /* Host ID */
 355         if (length != 6)
 356         {
 357             expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_length_invalid, "Invalid Host ID length");
 358         }
 359
 360         proto_tree_add_item(tlv_tree, hf_lltd_host_id, tvb, offset+2, 6, ENC_NA);
 361         break;
 362     case 0x02: /* Characteristics */
 363         if (length != 4)
 364         {
 365             expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_length_invalid, "Characteristics length");
 366         }
 367         else
 368         {
 369             type_tree = proto_tree_add_subtree(tree, tvb, offset+2, 4, ett_characteristics, &type_item, "Characteristics");
 370             proto_tree_add_item(type_tree, hf_lltd_char_p, tvb, offset+2, 4, ENC_BIG_ENDIAN);
 371             proto_tree_add_item(type_tree, hf_lltd_char_x, tvb, offset+2, 4, ENC_BIG_ENDIAN);
 372             proto_tree_add_item(type_tree, hf_lltd_char_f, tvb, offset+2, 4, ENC_BIG_ENDIAN);
 373             proto_tree_add_item(type_tree, hf_lltd_char_m, tvb, offset+2, 4, ENC_BIG_ENDIAN);
 374             proto_tree_add_item(type_tree, hf_lltd_char_l, tvb, offset+2, 4, ENC_BIG_ENDIAN);
 375             proto_tree_add_item(type_tree, hf_lltd_char_reserved, tvb, offset+2, 4, ENC_BIG_ENDIAN);
 376             if (tvb_get_ntohl(tvb, offset+2) & LLTD_CHARACTERISTIC_RESERVE_MASK)
 377                 expert_add_info(pinfo, type_item, &ei_lltd_char_reserved);
 378         }
 379         break;
 380     case 0x03: /* Physical Medium */
 381         if (length != 4)
 382         {
 383             expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_length_invalid, "Invalid Physical Medium length");
 384         }
 385
 386         proto_tree_add_item(tlv_tree, hf_lltd_physical_medium, tvb, offset+2, 4, ENC_BIG_ENDIAN);
 387         break;
 388     case 0x04: /* Wireless Mode */
 389         if (length != 1)
 390         {
 391             expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_length_invalid, "Invalid Wireless Mode length");
 392         }
 393
 394         proto_tree_add_item(tlv_tree, hf_lltd_wireless_mode, tvb, offset+2, 1, ENC_BIG_ENDIAN);
 395         break;
 396     case 0x05: /* 802.11 BSSID */
 397         if (length != 6)
 398         {
 399             expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_length_invalid, "Invalid BSSID length");
 400         }
 401
 402         proto_tree_add_item(tlv_tree, hf_lltd_bssid, tvb, offset+2, 6, ENC_NA);
 403         break;
 404     case 0x06: /* 802.11 SSID */
 405         if (length > 32)
 406         {
 407             expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_length_invalid, "SSID length too large");
 408         }
 409
 410         proto_tree_add_item(tlv_tree, hf_lltd_ssid, tvb, offset+2, length, ENC_NA|ENC_ASCII);
 411         break;
 412     case 0x07: /* IPv4 Address */
 413         if (length != 4)
 414         {
 415             expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_length_invalid, "Invalid IPv4 Address length");
 416         }
 417
 418         proto_tree_add_item(tlv_tree, hf_lltd_ipv4_address, tvb, offset+2, 4, ENC_BIG_ENDIAN);
 419         break;
 420     case 0x08: /* IPv6 Address */
 421         if (length != 16)
 422         {
 423             expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_length_invalid, "Invalid IPv6 Address length");
 424         }
 425
 426         proto_tree_add_item(tlv_tree, hf_lltd_ipv6_address, tvb, offset+2, 16, ENC_NA);
 427         break;
 428     case 0x09: /* 802.11 Maximum Operation Rate */
 429         if (length != 2)
 430         {
 431             expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_length_invalid, "Invalid Maximum Operation Rate length");
 432         }
 433
 434         proto_tree_add_item(tlv_tree, hf_lltd_max_operation_rate, tvb, offset+2, 2, ENC_BIG_ENDIAN);
 435         break;
 436     case 0x0A: /* Performance Counter Frequency */
 437         if (length != 8)
 438         {
 439             expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_length_invalid, "Invalid Performance Counter Frequency length");
 440         }
 441
 442         proto_tree_add_item(tlv_tree, hf_lltd_performance_count_freq, tvb, offset+2, 8, ENC_BIG_ENDIAN);
 443         break;
 444     case 0x0C: /* Link Speed */
 445         if (length != 4)
 446         {
 447             expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_length_invalid, "Invalid Link Speed length");
 448         }
 449
 450         proto_tree_add_item(tlv_tree, hf_lltd_link_speed, tvb, offset+2, 4, ENC_BIG_ENDIAN);
 451         break;
 452     case 0x0D: /* 802.11 RSSI */
 453         if (length != 4)
 454         {
 455             expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_length_invalid, "Invalid RSSI length");
 456         }
 457
 458         proto_tree_add_item(tlv_tree, hf_lltd_rssi, tvb, offset+2, 4, ENC_BIG_ENDIAN);
 459         break;
 460     case 0x0F: /* Machine Name */
 461         if (length > 32)
 462         {
 463             expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_length_invalid, "Machine Name length too large");
 464         }
 465
 466         proto_tree_add_item(tlv_tree, hf_lltd_machine_name, tvb, offset+2, length, ENC_LITTLE_ENDIAN|ENC_UCS_2);
 467         break;
 468     case 0x10: /* Support Information */
 469         if (length > 64)
 470         {
 471             expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_length_invalid, "Support Information length too large");
 472         }
 473
 474         proto_tree_add_item(tlv_tree, hf_lltd_support_info, tvb, offset+2, length, ENC_LITTLE_ENDIAN|ENC_UCS_2);
 475         break;
 476     case 0x11: /* Friendly Name */
 477         if (length != 0)
 478             expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_length_invalid, "Invalid Friendly Name length");
 479         break;
 480     case 0x12: /* Device UUID */
 481         if (length != 22)
 482         {
 483             expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_length_invalid, "Invalid Device UUID length");
 484         }
 485
 486         proto_tree_add_item(tlv_tree, hf_lltd_device_uuid, tvb, offset+2, 22, ENC_NA);
 487         break;
 488     case 0x13: /* Hardware ID */
 489         if (length != 0)
 490             expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_length_invalid, "Invalid Hardware ID length");
 491         break;
 492     case 0x14: /* QoS Characteristics */
 493         if (length != 4)
 494         {
 495             expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_length_invalid, "QoS Characteristics length");
 496         }
 497         else
 498         {
 499             type_tree = proto_tree_add_subtree(tlv_tree, tvb, offset+2, 4, ett_qos_characteristics, &type_item, "QoS Characteristics");
 500             proto_tree_add_item(type_tree, hf_lltd_qos_char_e, tvb, offset+2, 4, ENC_BIG_ENDIAN);
 501             proto_tree_add_item(type_tree, hf_lltd_qos_char_q, tvb, offset+2, 4, ENC_BIG_ENDIAN);
 502             proto_tree_add_item(type_tree, hf_lltd_qos_char_p, tvb, offset+2, 4, ENC_BIG_ENDIAN);
 503             proto_tree_add_item(type_tree, hf_lltd_qos_char_reserved, tvb, offset+2, 4, ENC_BIG_ENDIAN);
 504             temp32 = tvb_get_ntohl(tvb, offset+2);
 505             if (temp32 & LLTD_QOS_CHARACTERISTIC_RESERVE_MASK)
 506                 expert_add_info(pinfo, type_item, &ei_lltd_char_reserved);
 507         }
 508         break;
 509     case 0x15: /* 802.11 Physical Medium */
 510         if (length != 1)
 511         {
 512             expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_length_invalid, "Invalid 802.11 Physical Medium length");
 513         }
 514
 515         proto_tree_add_item(tlv_tree, hf_lltd_80211_physical_medium, tvb, offset+2, 1, ENC_BIG_ENDIAN);
 516         break;
 517     case 0x19: /* Sees-List Working Set */
 518         if (length != 2)
 519         {
 520             expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_length_invalid, "Invalid Sees-List Working Set length");
 521         }
 522
 523         proto_tree_add_item(tlv_tree, hf_lltd_sees_list_working_set, tvb, offset+2, 2, ENC_BIG_ENDIAN);
 524         break;
 525     case 0x1B: /* Repeater AP Lineage */
 526         type_tree = proto_tree_add_subtree(tree, tvb, offset+2, length, ett_repeater_ap_lineage, NULL, "Repeater AP Lineage");
 527         for (i = 0; i < length; i += 6)
 528             proto_tree_add_item(type_tree, hf_lltd_repeater_ap_lineage, tvb, offset+2+i, 6, ENC_NA);
 529
 530         if (length > 36)
 531             expert_add_info(pinfo, tlv_item, &ei_lltd_too_many_paths);
 532         break;
 533     case 0x0E: /* Icon Image */
 534     case 0x16: /* AP Association Table */
 535     case 0x18: /* Detailed Icon Image */
 536     case 0x1A: /* Component Table */
 537     case 0x1C: /* Repeater AP Table */
 538         if (length != 0)
 539             expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_length_invalid, "Invalid length");
 540         break;
 541     default:
 542         expert_add_info_format(pinfo, tlv_item, &ei_lltd_tlv_type, "Invalid TLV Type 0x%02x", type);
 543         break;
 544     }
 545
 546     return length+2;
 547 }
 548
 549 static void
 550 dissect_lltd_discovery(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset)
 551 {
 552     proto_item *header_item, *func_item;
 553     proto_tree *header_tree, *func_tree, *func_subtree;
 554     uint8_t    func;
 555     uint16_t   temp16;
 556     bool       end_tlv = false;
 557     int loop_offset, start_offset;
 558
 559     func = tvb_get_uint8(tvb, offset);
 560     proto_tree_add_item(tree, hf_lltd_discovery_func, tvb, offset, 1, ENC_NA);
 561     col_add_str(pinfo->cinfo, COL_INFO, val_to_str(func, lltd_discovery_vals, "Unknown (0x%02x)"));
 562     offset++;
 563
 564     /* Demultiplex header */
 565     header_tree = proto_tree_add_subtree(tree, tvb, offset, 14, ett_base_header, &header_item, "Base header");
 566
 567     proto_tree_add_item(header_tree, hf_lltd_discovery_real_dest_addr, tvb, offset, 6, ENC_NA);
 568     proto_tree_add_item(header_tree, hf_lltd_discovery_real_src_addr, tvb, offset+6, 6, ENC_NA);
 569     if (func == 0)
 570         proto_tree_add_item(header_tree, hf_lltd_discovery_xid, tvb, offset+12, 2, ENC_BIG_ENDIAN);
 571     else
 572         proto_tree_add_item(header_tree, hf_lltd_discovery_seq_num, tvb, offset+12, 2, ENC_BIG_ENDIAN);
 573
 574     switch(func)
 575     {
 576     case 0x00: /* Discover */
 577         proto_tree_add_item(tree, hf_lltd_discover_gen_num, tvb, offset+14, 2, ENC_BIG_ENDIAN);
 578         proto_tree_add_item(tree, hf_lltd_discover_num_stations, tvb, offset+16, 2, ENC_BIG_ENDIAN);
 579         temp16 = tvb_get_ntohs(tvb, offset+16);
 580         if (temp16 > 0)
 581         {
 582             func_tree = proto_tree_add_subtree(tree, tvb, offset+18, temp16*6, ett_discover_stations, NULL, "Stations");
 583             for (loop_offset = 0; loop_offset < temp16*6; loop_offset += 6)
 584                 proto_tree_add_item(func_tree, hf_lltd_discover_station, tvb, offset+18+loop_offset, 6, ENC_NA);
 585         }
 586         break;
 587     case 0x01: /* Hello */
 588         proto_tree_add_item(tree, hf_lltd_hello_gen_num, tvb, offset+14, 2, ENC_BIG_ENDIAN);
 589         proto_tree_add_item(tree, hf_lltd_hello_current_address, tvb, offset+16, 6, ENC_NA);
 590         proto_tree_add_item(tree, hf_lltd_hello_apparent_address, tvb, offset+22, 6, ENC_NA);
 591
 592         func_tree = proto_tree_add_subtree(tree, tvb, offset+28, 0, ett_tlv, &func_item, "TLVs");
 593         start_offset = loop_offset = offset+28;
 594         while ((end_tlv == false) && (tvb_reported_length_remaining(tvb, loop_offset) >= 1))
 595         {
 596             loop_offset += dissect_lltd_tlv(tvb, pinfo, func_tree, loop_offset, &end_tlv);
 597         }
 598         proto_item_set_len(func_item, loop_offset-start_offset);
 599         break;
 600     case 0x02: /* Emit */
 601         proto_tree_add_item(tree, hf_lltd_emit_num_descs, tvb, offset+14, 2, ENC_BIG_ENDIAN);
 602         temp16 = tvb_get_ntohs(tvb, offset+14);
 603         if (temp16 > 0)
 604         {
 605             func_tree = proto_tree_add_subtree(tree, tvb, offset+16, temp16*14, ett_emitee_descs, NULL, "EmiteeDescs");
 606             for (loop_offset = 0; loop_offset < temp16*14; loop_offset += 14)
 607             {
 608                 func_subtree = proto_tree_add_subtree(func_tree, tvb, offset+16+loop_offset, 14, ett_emitee_descs_item, NULL, "EmiteeDescs Item");
 609
 610                 proto_tree_add_item(func_subtree, hf_lltd_emit_type, tvb, offset+16+loop_offset, 1, ENC_NA);
 611                 proto_tree_add_item(func_subtree, hf_lltd_emit_pause, tvb, offset+16+loop_offset+1, 1, ENC_NA);
 612                 proto_tree_add_item(func_subtree, hf_lltd_emit_src_addr, tvb, offset+16+loop_offset+2, 6, ENC_NA);
 613                 proto_tree_add_item(func_subtree, hf_lltd_emit_dest_addr, tvb, offset+16+loop_offset+8, 6, ENC_NA);
 614             }
 615         }
 616         break;
 617     case 0x07: /* QueryResp */
 618         proto_tree_add_item(tree, hf_lltd_queryresp_more_descs, tvb, offset+14, 2, ENC_BIG_ENDIAN);
 619         proto_tree_add_item(tree, hf_lltd_queryresp_memory_descs, tvb, offset+14, 2, ENC_BIG_ENDIAN);
 620         proto_tree_add_item(tree, hf_lltd_queryresp_num_descs, tvb, offset+14, 2, ENC_BIG_ENDIAN);
 621         temp16 = tvb_get_ntohs(tvb, offset+14) & LLTD_QUERY_RESP_NUM_DESCS_MASK;
 622         if (temp16 > 0)
 623         {
 624             func_tree = proto_tree_add_subtree(tree, tvb, offset+16, temp16*20, ett_recvee_descs, NULL, "RecveeDescs");
 625             for (loop_offset = 0; loop_offset < temp16*14; loop_offset += 20)
 626             {
 627                 func_subtree = proto_tree_add_subtree(func_tree, tvb, offset+16+loop_offset, 20,
 628                                                     ett_recvee_descs_item, NULL, "RecveeDescs Item");
 629
 630                 proto_tree_add_item(func_subtree, hf_lltd_queryresp_type, tvb, offset+16+loop_offset, 2, ENC_BIG_ENDIAN);
 631                 proto_tree_add_item(func_subtree, hf_lltd_queryresp_real_src_addr, tvb, offset+16+loop_offset+2, 6, ENC_NA);
 632                 proto_tree_add_item(func_subtree, hf_lltd_queryresp_ethernet_src_addr, tvb, offset+16+loop_offset+8, 6, ENC_NA);
 633                 proto_tree_add_item(func_subtree, hf_lltd_queryresp_ethernet_dest_addr, tvb, offset+16+loop_offset+14, 6, ENC_NA);
 634             }
 635         }
 636         break;
 637     case 0x0A: /* Flat */
 638         proto_tree_add_item(tree, hf_lltd_flat_crc_bytes, tvb, offset+14, 4, ENC_BIG_ENDIAN);
 639         proto_tree_add_item(tree, hf_lltd_flat_crc_packets, tvb, offset+18, 1, ENC_BIG_ENDIAN);
 640         break;
 641     case 0x0B: /* QueryLargeTlv */
 642         proto_tree_add_item(tree, hf_lltd_query_large_tlv_type, tvb, offset+14, 1, ENC_BIG_ENDIAN);
 643         proto_tree_add_item(tree, hf_lltd_query_large_tlv_offset, tvb, offset+15, 3, ENC_BIG_ENDIAN);
 644         break;
 645     case 0x0C: /* QueryLargeTlvResp */
 646         proto_tree_add_item(tree, hf_lltd_querylargeresp_more_descs, tvb, offset+14, 2, ENC_BIG_ENDIAN);
 647         proto_tree_add_item(tree, hf_lltd_querylargeresp_memory_descs, tvb, offset+14, 2, ENC_BIG_ENDIAN);
 648         proto_tree_add_item(tree, hf_lltd_querylargeresp_num_descs, tvb, offset+14, 2, ENC_BIG_ENDIAN);
 649         temp16 = tvb_get_ntohs(tvb, offset+14) & LLTD_QUERY_RESP_NUM_DESCS_MASK;
 650         if (temp16 > 0)
 651             proto_tree_add_item(tree, hf_lltd_querylargeresp_data, tvb, offset+16, temp16, ENC_NA);
 652         break;
 653     case 0x03: /* Train */
 654     case 0x04: /* Probe */
 655     case 0x05: /* Ack */
 656     case 0x06: /* Query */
 657     case 0x08: /* Reset */
 658     case 0x09: /* Charge */
 659          /* No data */
 660         break;
 661     default:
 662         expert_add_info_format(pinfo, header_item, &ei_lltd_discovery_func, "Invalid function 0x%02x", func);
 663         break;
 664     }
 665 }
 666
 667 static void
 668 dissect_lltd_qos(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset)
 669 {
 670     proto_item *header_item;
 671     proto_tree *header_tree, *func_tree, *func_subtree;
 672     uint8_t    func;
 673     uint16_t   seq_num, temp16;
 674     int loop_offset;
 675
 676     func = tvb_get_uint8(tvb, offset);
 677     proto_tree_add_item(tree, hf_lltd_qos_diag_func, tvb, offset, 1, ENC_NA);
 678     col_add_str(pinfo->cinfo, COL_INFO, val_to_str(func, lltd_qos_diag_vals, "Unknown (0x%02x)"));
 679     offset++;
 680
 681     header_tree = proto_tree_add_subtree(tree, tvb, offset, 14, ett_base_header, &header_item, "Base header");
 682
 683     proto_tree_add_item(header_tree, hf_lltd_qos_real_dest_addr, tvb, offset, 6, ENC_NA);
 684     proto_tree_add_item(header_tree, hf_lltd_qos_real_src_addr, tvb, offset+6, 6, ENC_NA);
 685     proto_tree_add_item(header_tree, hf_lltd_qos_seq_num, tvb, offset+12, 2, ENC_BIG_ENDIAN);
 686     seq_num = tvb_get_ntohs(tvb, offset+12);
 687
 688     switch(func)
 689     {
 690     case 0x00: /* QosInitializeSink */
 691         proto_tree_add_item(tree, hf_lltd_qos_initialize_interrupt_mod, tvb, offset+14, 1, ENC_BIG_ENDIAN);
 692         break;
 693     case 0x01: /* QosReady */
 694         proto_tree_add_item(tree, hf_lltd_qos_ready_sink_link_speed, tvb, offset+14, 4, ENC_BIG_ENDIAN);
 695         proto_tree_add_item(tree, hf_lltd_qos_ready_perf_count_freq, tvb, offset+18, 8, ENC_BIG_ENDIAN);
 696         break;
 697     case 0x02: /* QosProbe */
 698         proto_tree_add_item(tree, hf_lltd_qos_probe_controller_transmit_timestamp, tvb, offset+14, 8, ENC_BIG_ENDIAN);
 699         proto_tree_add_item(tree, hf_lltd_qos_probe_sink_receive_timestamp, tvb, offset+22, 8, ENC_BIG_ENDIAN);
 700         proto_tree_add_item(tree, hf_lltd_qos_probe_sink_transmit_timestamp, tvb, offset+30, 8, ENC_BIG_ENDIAN);
 701         proto_tree_add_item(tree, hf_lltd_qos_probe_test_type, tvb, offset+38, 1, ENC_BIG_ENDIAN);
 702         proto_tree_add_item(tree, hf_lltd_qos_probe_packet_id, tvb, offset+39, 1, ENC_BIG_ENDIAN);
 703         proto_tree_add_item(tree, hf_lltd_qos_probe_t, tvb, offset+40, 1, ENC_BIG_ENDIAN);
 704         proto_tree_add_item(tree, hf_lltd_qos_probe_8021p_value, tvb, offset+40, 1, ENC_BIG_ENDIAN);
 705         proto_tree_add_item(tree, hf_lltd_qos_probe_payload, tvb, offset+41, 5, ENC_NA);
 706         break;
 707     case 0x03: /* QosQuery */
 708     case 0x07: /* QosAck */
 709         if (seq_num == 0)
 710             expert_add_info(pinfo, header_item, &ei_lltd_qos_seq_num);
 711         /* No Data */
 712         break;
 713     case 0x04: /* QosQueryResp */
 714         proto_tree_add_item(tree, hf_lltd_qos_query_resp_r, tvb, offset+14, 2, ENC_BIG_ENDIAN);
 715         proto_tree_add_item(tree, hf_lltd_qos_query_resp_e, tvb, offset+14, 2, ENC_BIG_ENDIAN);
 716         proto_tree_add_item(tree, hf_lltd_qos_query_resp_num_events, tvb, offset+14, 2, ENC_BIG_ENDIAN);
 717         temp16 = tvb_get_ntohs(tvb, offset+14) & LLTD_QUERY_RESP_NUM_DESCS_MASK;
 718         if (temp16 > 0)
 719         {
 720             func_tree = proto_tree_add_subtree(tree, tvb, offset+16, temp16*18, ett_qos_event_descs, NULL, "QosEventDesc");
 721             for (loop_offset = 0; loop_offset < temp16*18; loop_offset += 18)
 722             {
 723                 func_subtree = proto_tree_add_subtree(func_tree, tvb, offset+16+loop_offset, 18, ett_qos_event_item, NULL, "Qos Event");
 724
 725                 proto_tree_add_item(func_subtree, hf_lltd_qos_query_resp_controller_timestamp, tvb, offset+16+loop_offset, 8, ENC_BIG_ENDIAN);
 726                 proto_tree_add_item(func_subtree, hf_lltd_qos_query_resp_sink_timestamp, tvb, offset+16+loop_offset+8, 8, ENC_BIG_ENDIAN);
 727                 proto_tree_add_item(func_subtree, hf_lltd_qos_query_resp_packet_id, tvb, offset+16+loop_offset+16, 1, ENC_BIG_ENDIAN);
 728                 proto_tree_add_item(func_subtree, hf_lltd_qos_query_resp_reserved, tvb, offset+16+loop_offset+17, 1, ENC_BIG_ENDIAN);
 729             }
 730         }
 731         break;
 732     case 0x05: /* QosReset */
 733         /* No Data */
 734         break;
 735     case 0x06: /* QosError */
 736         proto_tree_add_item(tree, hf_lltd_qos_error_value, tvb, offset+14, 2, ENC_BIG_ENDIAN);
 737         break;
 738     case 0x08: /* QosCounterSnapshot */
 739         if (seq_num == 0)
 740             expert_add_info(pinfo, header_item, &ei_lltd_qos_seq_num);
 741         proto_tree_add_item(tree, hf_lltd_qos_count_snapshot_history, tvb, offset+14, 1, ENC_BIG_ENDIAN);
 742         break;
 743     case 0x09: /* QosCounterResult */
 744         proto_tree_add_item(tree, hf_lltd_qos_counter_result_subsec_span, tvb, offset+14, 1, ENC_BIG_ENDIAN);
 745         proto_tree_add_item(tree, hf_lltd_qos_counter_result_byte_scale, tvb, offset+15, 1, ENC_BIG_ENDIAN);
 746         proto_tree_add_item(tree, hf_lltd_qos_counter_result_packet_scale, tvb, offset+16, 1, ENC_BIG_ENDIAN);
 747         proto_tree_add_item(tree, hf_lltd_qos_counter_result_history_size, tvb, offset+17, 1, ENC_BIG_ENDIAN);
 748         temp16 = tvb_get_uint8(tvb, offset+17);
 749         if (temp16 > 0)
 750         {
 751             func_tree = proto_tree_add_subtree(tree, tvb, offset+18, temp16*4, ett_qos_snapshot_list, NULL, "Snapshot List");
 752             for (loop_offset = 0; loop_offset < temp16*4; loop_offset += 4)
 753             {
 754                 func_subtree = proto_tree_add_subtree(func_tree, tvb, offset+18+loop_offset, 4, ett_qos_snapshot_item, NULL, "Snapshot");
 755
 756                 proto_tree_add_item(func_subtree, hf_lltd_qos_snapshot_bytes_recv, tvb, offset+16+loop_offset, 2, ENC_BIG_ENDIAN);
 757                 proto_tree_add_item(func_subtree, hf_lltd_qos_snapshot_packets_recv, tvb, offset+16+loop_offset+2, 2, ENC_BIG_ENDIAN);
 758                 proto_tree_add_item(func_subtree, hf_lltd_qos_snapshot_bytes_sent, tvb, offset+16+loop_offset+4, 2, ENC_BIG_ENDIAN);
 759                 proto_tree_add_item(func_subtree, hf_lltd_qos_snapshot_packets_sent, tvb, offset+16+loop_offset+6, 2, ENC_BIG_ENDIAN);
 760             }
 761         }
 762         break;
 763     case 0x0A: /* QosCounterLease */
 764         /* No Data */
 765         break;
 766     default:
 767         expert_add_info_format(pinfo, header_item, &ei_lltd_qos_diag_func, "Invalid function 0x%02x", func);
 768         break;
 769     }
 770 }
 771
 772 static int
 773 dissect_lltd(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
 774 {
 775     proto_item *ti;
 776     proto_tree *lltd_tree;
 777     uint8_t    tos;
 778
 779     col_set_str(pinfo->cinfo, COL_PROTOCOL, "LLTD");
 780     col_clear(pinfo->cinfo, COL_INFO);
 781
 782     ti = proto_tree_add_item(tree, proto_lltd, tvb, 0, -1, ENC_NA);
 783     lltd_tree = proto_item_add_subtree(ti, ett_lltd);
 784
 785     proto_tree_add_item(lltd_tree, hf_lltd_version, tvb, 0, 1, ENC_NA);
 786     proto_tree_add_item(lltd_tree, hf_lltd_type_of_service, tvb, 1, 1, ENC_NA);
 787     tos = tvb_get_uint8(tvb, 1);
 788     proto_tree_add_item(lltd_tree, hf_lltd_reserved, tvb, 2, 1, ENC_NA);
 789
 790     switch(tos)
 791     {
 792     case 0: /* Topology discovery */
 793     case 1: /* Quick discovery */
 794         dissect_lltd_discovery(tvb, pinfo, lltd_tree, 3);
 795         break;
 796
 797     case 2: /* QoS Diagnostics */
 798         dissect_lltd_qos(tvb, pinfo, lltd_tree, 3);
 799         break;
 800
 801     default:
 802         expert_add_info_format(pinfo, ti, &ei_lltd_type_of_service, "Invalid Type of Service value 0x%02x", tos);
 803         break;
 804     }
 805
 806     return tvb_captured_length(tvb);
 807 }
 808
 809 void
 810 proto_register_lltd(void)
 811 {
 812     static hf_register_info hf[] = {
 813
 814         { &hf_lltd_version, {"Version", "lltd.version", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL }},
 815         { &hf_lltd_type_of_service, {"Type of Service", "lltd.tos", FT_UINT8, BASE_HEX, VALS(lltd_tos_vals), 0, NULL, HFILL }},
 816         { &hf_lltd_reserved, {"Reserved", "lltd.reserved", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL }},
 817         { &hf_lltd_discovery_func, {"Discovery function", "lltd.discovery", FT_UINT8, BASE_HEX, VALS(lltd_discovery_vals), 0, NULL, HFILL }},
 818         { &hf_lltd_discovery_real_dest_addr, { "Real Destination Address", "lltd.discovery.real_dest_addr", FT_ETHER, BASE_NONE, NULL, 0, NULL, HFILL }},
 819         { &hf_lltd_discovery_real_src_addr, { "Real Source Address", "lltd.discovery.real_src_addr", FT_ETHER, BASE_NONE, NULL, 0, NULL, HFILL }},
 820         { &hf_lltd_discovery_xid, {"XID", "lltd.discovery.xid", FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL }},
 821         { &hf_lltd_discovery_seq_num, {"Sequence Number", "lltd.discovery.seq_num", FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL }},
 822         { &hf_lltd_discover_gen_num, {"Generation Number", "lltd.discover.gen_num", FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL }},
 823         { &hf_lltd_discover_num_stations, {"Number of Stations", "lltd.discover.num_stations", FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL }},
 824         { &hf_lltd_discover_station, { "Station", "lltd.discover.station", FT_ETHER, BASE_NONE, NULL, 0, NULL, HFILL }},
 825         { &hf_lltd_hello_gen_num, {"Generation Number", "lltd.hello.gen_num", FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL }},
 826         { &hf_lltd_hello_current_address, { "Current Mapper Address", "lltd.hello.current_address", FT_ETHER, BASE_NONE, NULL, 0, NULL, HFILL }},
 827         { &hf_lltd_hello_apparent_address, { "Current Apparent Address", "lltd.hello.apparent_address", FT_ETHER, BASE_NONE, NULL, 0, NULL, HFILL }},
 828         { &hf_lltd_tlv_type, {"Type", "lltd.tlv.type", FT_UINT8, BASE_HEX, VALS(lltd_tlv_type_vals), 0, NULL, HFILL }},
 829         { &hf_lltd_tlv_length, {"Length", "lltd.tlv.length", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL }},
 830         { &hf_lltd_host_id, { "Host ID", "lltd.host_id", FT_ETHER, BASE_NONE, NULL, 0, NULL, HFILL }},
 831         { &hf_lltd_char_p, {"Public NAT", "lltd.characteristic.public_nat", FT_BOOLEAN, 32, NULL, LLTD_CHARACTERISTIC_P_MASK, NULL, HFILL }},
 832         { &hf_lltd_char_x, {"Private NAT", "lltd.characteristic.private_nat", FT_BOOLEAN, 32, NULL, LLTD_CHARACTERISTIC_X_MASK, NULL, HFILL }},
 833         { &hf_lltd_char_f, {"Duplex", "lltd.characteristic.duplex", FT_BOOLEAN, 32, TFS(&tfs_full_half_duplex), LLTD_CHARACTERISTIC_F_MASK, NULL, HFILL }},
 834         { &hf_lltd_char_m, {"Management Web Page", "lltd.characteristic.web_page", FT_BOOLEAN, 32, TFS(&tfs_present_absent), LLTD_CHARACTERISTIC_M_MASK, NULL, HFILL }},
 835         { &hf_lltd_char_l, {"Looping Outbound Packets", "lltd.characteristic.loop", FT_BOOLEAN, 32, NULL, LLTD_CHARACTERISTIC_L_MASK, NULL, HFILL }},
 836         { &hf_lltd_char_reserved, {"Reserved", "lltd.characteristic.reserved", FT_UINT32, BASE_HEX, NULL, LLTD_CHARACTERISTIC_RESERVE_MASK, NULL, HFILL }},
 837         { &hf_lltd_physical_medium, {"Physical Medium", "lltd.physical_medium", FT_UINT32, BASE_DEC, NULL, 0, NULL, HFILL }},
 838         { &hf_lltd_wireless_mode, {"Wireless Mode", "lltd.wireless_mode", FT_UINT8, BASE_HEX, VALS(lltd_wireless_mode_vals), 0, NULL, HFILL }},
 839         { &hf_lltd_bssid, { "BSSID", "lltd.bssid", FT_ETHER, BASE_NONE, NULL, 0, NULL, HFILL }},
 840         { &hf_lltd_ssid, { "SSID", "lltd.ssid", FT_STRING, BASE_NONE, NULL, 0, NULL, HFILL }},
 841         { &hf_lltd_ipv4_address, { "IPv4 Address", "lltd.ipv4_address", FT_IPv4, BASE_NONE, NULL, 0, NULL, HFILL }},
 842         { &hf_lltd_ipv6_address, { "IPv6 Address", "lltd.ipv6_address", FT_IPv6, BASE_NONE, NULL, 0, NULL, HFILL }},
 843         { &hf_lltd_max_operation_rate, {"Maximum Operational Rate (.5 Mbps)", "lltd.max_operation_rate", FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL }},
 844         { &hf_lltd_performance_count_freq, {"Performance Counter Frequency", "lltd.performance_count_freq", FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL }},
 845         { &hf_lltd_link_speed, {"Link Speed (100 bps)", "lltd.link_speed", FT_UINT32, BASE_DEC, NULL, 0, NULL, HFILL }},
 846         { &hf_lltd_rssi, {"RSSI", "lltd.rssi", FT_INT32, BASE_DEC, NULL, 0, NULL, HFILL }},
 847         { &hf_lltd_machine_name, { "Machine Name", "lltd.machine_name", FT_STRING /*FT_UCS2_LE */, BASE_NONE, NULL, 0, NULL, HFILL }},
 848         { &hf_lltd_support_info, { "Support Information", "lltd.support_info", FT_STRING /*FT_UCS2_LE */, BASE_NONE, NULL, 0, NULL, HFILL }},
 849         { &hf_lltd_device_uuid, { "Device UUID", "lltd.device_uuid", FT_GUID, BASE_NONE, NULL, 0, NULL, HFILL }},
 850         { &hf_lltd_qos_char_e, {"Layer 2 Forwarding", "lltd.qos_characteristic.layer2_forwarding", FT_BOOLEAN, 32, NULL, LLTD_QOS_CHARACTERISTIC_E_MASK, NULL, HFILL }},
 851         { &hf_lltd_qos_char_q, {"802.1q VLAN", "lltd.qos_characteristic.vlan", FT_BOOLEAN, 32, TFS(&tfs_supported_not_supported), LLTD_QOS_CHARACTERISTIC_Q_MASK, NULL, HFILL }},
 852         { &hf_lltd_qos_char_p, {"802.1q Priority Tagging", "lltd.qos_characteristic.tagging", FT_BOOLEAN, 32, TFS(&tfs_supported_not_supported), LLTD_QOS_CHARACTERISTIC_P_MASK, NULL, HFILL }},
 853         { &hf_lltd_qos_char_reserved, {"Reserved", "lltd.qos_characteristic.reserved", FT_UINT32, BASE_HEX, NULL, LLTD_QOS_CHARACTERISTIC_RESERVE_MASK, NULL, HFILL }},
 854         { &hf_lltd_80211_physical_medium, {"802.11 Physical Medium", "lltd.80211_physical_medium", FT_UINT8, BASE_HEX, VALS(lltd_80211_physical_medium_vals), 0, NULL, HFILL }},
 855         { &hf_lltd_sees_list_working_set, {"Sees-List Working Set", "lltd.sees_list_working_set", FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL }},
 856         { &hf_lltd_repeater_ap_lineage, { "Address Path to Root", "lltd.address_path_to_root", FT_ETHER, BASE_NONE, NULL, 0, NULL, HFILL }},
 857         { &hf_lltd_emit_num_descs, {"Number of EmiteeDescs", "lltd.emit.num_descs", FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL }},
 858         { &hf_lltd_emit_type, {"Type", "lltd.emit.type", FT_UINT8, BASE_HEX, VALS(lltd_emit_type_vals), 0, NULL, HFILL }},
 859         { &hf_lltd_emit_pause, {"Pause (ms)", "lltd.emit.pause", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL }},
 860         { &hf_lltd_emit_src_addr, { "Source Address", "lltd.emit.src_addr", FT_ETHER, BASE_NONE, NULL, 0, NULL, HFILL }},
 861         { &hf_lltd_emit_dest_addr, { "Destination Address", "lltd.emit.dest_addr", FT_ETHER, BASE_NONE, NULL, 0, NULL, HFILL }},
 862         { &hf_lltd_queryresp_more_descs, {"More RecveeDescs", "lltd.queryresp.more", FT_BOOLEAN, 16, NULL, LLTD_QUERY_RESP_M_MASK, NULL, HFILL }},
 863         { &hf_lltd_queryresp_memory_descs, {"No memory left", "lltd.queryresp.memory", FT_BOOLEAN, 16, NULL, LLTD_QUERY_RESP_E_MASK, NULL, HFILL }},
 864         { &hf_lltd_queryresp_num_descs, {"Number of RecveeDescs", "lltd.queryresp.num_descs", FT_UINT16, BASE_DEC, NULL, LLTD_QUERY_RESP_NUM_DESCS_MASK, NULL, HFILL }},
 865         { &hf_lltd_queryresp_type, {"Type", "lltd.queryresp.type", FT_UINT16, BASE_HEX, VALS(lltd_queryresp_type_vals), 0, NULL, HFILL }},
 866         { &hf_lltd_queryresp_real_src_addr, { "Real Source Address", "lltd.queryresp.real_src_addr", FT_ETHER, BASE_NONE, NULL, 0, NULL, HFILL }},
 867         { &hf_lltd_queryresp_ethernet_src_addr, { "Ethernet Source Address", "lltd.queryresp.ethernet_src_addr", FT_ETHER, BASE_NONE, NULL, 0, NULL, HFILL }},
 868         { &hf_lltd_queryresp_ethernet_dest_addr, { "Ethernet Destination Address", "lltd.queryresp.ethernet_dest_addr", FT_ETHER, BASE_NONE, NULL, 0, NULL, HFILL }},
 869         { &hf_lltd_flat_crc_bytes, {"Current Transmit Credit (bytes)", "lltd.flat.crc_bytes", FT_UINT32, BASE_DEC, NULL, 0, NULL, HFILL }},
 870         { &hf_lltd_flat_crc_packets, {"Current Transmit Credit (packets)", "lltd.flat.crc_packets", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL }},
 871         { &hf_lltd_query_large_tlv_type, {"Type", "lltd.query_large_tlv.type", FT_UINT8, BASE_HEX, VALS(lltd_query_large_tlv_type_vals), 0, NULL, HFILL }},
 872         { &hf_lltd_query_large_tlv_offset, {"Offset", "lltd.query_large_tlv.offset", FT_UINT24, BASE_DEC, NULL, 0, NULL, HFILL }},
 873         { &hf_lltd_querylargeresp_more_descs, {"More RecveeDescs", "lltd.querylargeresp.more", FT_BOOLEAN, 16, NULL, LLTD_QUERY_RESP_M_MASK, NULL, HFILL }},
 874         { &hf_lltd_querylargeresp_memory_descs, {"No memory left", "lltd.querylargeresp.memory", FT_BOOLEAN, 16, NULL, LLTD_QUERY_RESP_E_MASK, NULL, HFILL }},
 875         { &hf_lltd_querylargeresp_num_descs, {"Number of RecveeDescs", "lltd.querylargeresp.num_descs", FT_UINT16, BASE_DEC, NULL, LLTD_QUERY_RESP_NUM_DESCS_MASK, NULL, HFILL }},
 876         { &hf_lltd_querylargeresp_data, { "Data", "lltd.querylargeresp.data", FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }},
 877
 878         { &hf_lltd_qos_diag_func, {"QoS Diagnostics function", "lltd.qos_diag", FT_UINT8, BASE_HEX, VALS(lltd_qos_diag_vals), 0, NULL, HFILL }},
 879         { &hf_lltd_qos_real_dest_addr, { "Real Destination Address", "lltd.qos.real_dest_addr", FT_ETHER, BASE_NONE, NULL, 0, NULL, HFILL }},
 880         { &hf_lltd_qos_real_src_addr, { "Real Source Address", "lltd.qos.real_src_addr", FT_ETHER, BASE_NONE, NULL, 0, NULL, HFILL }},
 881         { &hf_lltd_qos_seq_num, {"Sequence Number", "lltd.qos.seq_num", FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL }},
 882         { &hf_lltd_qos_initialize_interrupt_mod, {"Interrupt Mod", "lltd.qos_initialize.interrupt_mod", FT_UINT8, BASE_HEX, VALS(lltd_interrupt_mod_vals), 0, NULL, HFILL }},
 883         { &hf_lltd_qos_ready_sink_link_speed, {"Sink Link Speed (100 bps)", "lltd.qos_ready.sink_link_speed", FT_UINT32, BASE_DEC, NULL, 0, NULL, HFILL }},
 884         { &hf_lltd_qos_ready_perf_count_freq, {"Performance Counter Frequency", "lltd.qos_ready.performance_count_freq", FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL }},
 885         { &hf_lltd_qos_probe_controller_transmit_timestamp, {"Controller Transmit Timestamp", "lltd.qos_probe.controller_transmit_timestamp", FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL }},
 886         { &hf_lltd_qos_probe_sink_receive_timestamp, {"Sink Receive Timestamp", "lltd.qos_probe.sink_receive_timestamp", FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL }},
 887         { &hf_lltd_qos_probe_sink_transmit_timestamp, {"Sink Transmit Timestamp", "lltd.qos_probe.sink_transmit_timestamp", FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL }},
 888         { &hf_lltd_qos_probe_test_type, {"Test Type", "lltd.qos_probe.test_type", FT_UINT8, BASE_HEX, VALS(lltd_qos_probe_test_type_vals), 0, NULL, HFILL }},
 889         { &hf_lltd_qos_probe_packet_id, {"Packet ID", "lltd.qos_probe.packet_id", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL }},
 890         { &hf_lltd_qos_probe_t, {"802.1p Tag", "lltd.qos_probe.tag", FT_BOOLEAN, 8, TFS(&tfs_present_not_present), 0x80, NULL, HFILL }},
 891         { &hf_lltd_qos_probe_8021p_value, {"802.1p Value", "lltd.qos_probe.value", FT_UINT8, BASE_DEC, NULL, 0x7F, NULL, HFILL }},
 892         { &hf_lltd_qos_probe_payload, {"Payload", "lltd.qos_probe.payload", FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }},
 893         { &hf_lltd_qos_error_value, {"Error Code", "lltd.qos_error", FT_UINT16, BASE_DEC, VALS(lltd_qos_error_vals), 0, NULL, HFILL }},
 894         { &hf_lltd_qos_count_snapshot_history, {"History Size", "lltd.qos_count_snapshot.history", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL }},
 895         { &hf_lltd_qos_query_resp_r, {"Receipt", "lltd.qos_query_resp.receipt", FT_BOOLEAN, 16, NULL, LLTD_QUERY_RESP_M_MASK, NULL, HFILL }},
 896         { &hf_lltd_qos_query_resp_e, {"No memory left", "lltd.qos_query_resp.memory", FT_BOOLEAN, 16, NULL, LLTD_QUERY_RESP_E_MASK, NULL, HFILL }},
 897         { &hf_lltd_qos_query_resp_num_events, {"Number of Events", "lltd.qos_query_resp.num_events", FT_UINT16, BASE_DEC, NULL, LLTD_QUERY_RESP_NUM_DESCS_MASK, NULL, HFILL }},
 898         { &hf_lltd_qos_query_resp_controller_timestamp, {"Controller Transmit Timestamp", "lltd.qos_query_resp.controller_timestamp", FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL }},
 899         { &hf_lltd_qos_query_resp_sink_timestamp, {"Sink Receive Timestamp", "lltd.qos_query_resp.sink_timestamp", FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL }},
 900         { &hf_lltd_qos_query_resp_packet_id, {"Packet ID", "lltd.qos_query_resp.packet_id", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL }},
 901         { &hf_lltd_qos_query_resp_reserved, {"Reserved", "lltd.qos_query_resp.reserved", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL }},
 902         { &hf_lltd_qos_counter_result_subsec_span, {"Subsecond Span (1/256th sec)", "lltd.qos_counter_result.subsec_span", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL }},
 903         { &hf_lltd_qos_counter_result_byte_scale, {"Byte Scale (kb)", "lltd.qos_counter_result.byte_scale", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL }},
 904         { &hf_lltd_qos_counter_result_packet_scale, {"Packet Scale", "lltd.qos_counter_result.packet_scale", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL }},
 905         { &hf_lltd_qos_counter_result_history_size, {"History Size", "lltd.qos_counter_result.history_size", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL }},
 906         { &hf_lltd_qos_snapshot_bytes_recv, {"Bytes Received", "lltd.qos_snapshot.bytes_recv", FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL }},
 907         { &hf_lltd_qos_snapshot_packets_recv, {"Packets Received", "lltd.qos_snapshot.packets_recv", FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL }},
 908         { &hf_lltd_qos_snapshot_bytes_sent, {"Bytes Sent", "lltd.qos_snapshot.bytes_sent", FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL }},
 909         { &hf_lltd_qos_snapshot_packets_sent, {"Packets Sent", "lltd.qos_snapshot.packets_sent", FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL }}
 910     };
 911
 912     static int *ett[] = {
 913         &ett_lltd,
 914         &ett_base_header,
 915         &ett_discover_stations,
 916         &ett_tlv,
 917         &ett_tlv_item,
 918         &ett_characteristics,
 919         &ett_qos_characteristics,
 920         &ett_repeater_ap_lineage,
 921         &ett_emitee_descs,
 922         &ett_emitee_descs_item,
 923         &ett_recvee_descs,
 924         &ett_recvee_descs_item,
 925         &ett_qos_event_descs,
 926         &ett_qos_event_item,
 927         &ett_qos_snapshot_list,
 928         &ett_qos_snapshot_item
 929     };
 930
 931     static ei_register_info ei[] = {
 932         { &ei_lltd_tlv_length_invalid, { "lltd.tlv.length.invalid", PI_MALFORMED, PI_ERROR, "Invalid length", EXPFILL }},
 933         { &ei_lltd_char_reserved, { "lltd.characteristic.reserved.not_zero", PI_PROTOCOL, PI_WARN, "Non zero reserve bits", EXPFILL }},
 934         { &ei_lltd_too_many_paths, { "lltd.too_many_paths", PI_PROTOCOL, PI_WARN, "Too many paths to root", EXPFILL }},
 935         { &ei_lltd_tlv_type, { "lltd.tlv.type.invalid", PI_PROTOCOL, PI_WARN, "Invalid TLV Type", EXPFILL }},
 936         { &ei_lltd_discovery_func, { "lltd.discovery.invalid", PI_PROTOCOL, PI_WARN, "Invalid function", EXPFILL }},
 937         { &ei_lltd_qos_seq_num, { "lltd.qos.seq_num.cannot_be_zero", PI_PROTOCOL, PI_WARN, "Sequence number can not be 0", EXPFILL }},
 938         { &ei_lltd_qos_diag_func, { "lltd.qos_diag.invalid", PI_PROTOCOL, PI_WARN, "Invalid function", EXPFILL }},
 939         { &ei_lltd_type_of_service, { "lltd.tos.invalid", PI_PROTOCOL, PI_WARN, "Invalid Type of Service value", EXPFILL }},
 940     };
 941
 942     expert_module_t* expert_lltd;
 943
 944     proto_lltd = proto_register_protocol("Link Layer Topology Discovery", "LLTD", "lltd");
 945     proto_register_field_array(proto_lltd, hf, array_length(hf));
 946     proto_register_subtree_array(ett, array_length(ett));
 947     expert_lltd = expert_register_protocol(proto_lltd);
 948     expert_register_field_array(expert_lltd, ei, array_length(ei));
 949
 950     lltd_handle = register_dissector("lltd", dissect_lltd, proto_lltd);
 951 }
 952
 953 void
 954 proto_reg_handoff_lltd(void)
 955 {
 956     dissector_add_uint("ethertype", ETHERTYPE_LLTD, lltd_handle);
 957 }
 958
 959 /*
 960  * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
 961  *
 962  * Local variables:
 963  * c-basic-offset: 4
 964  * tab-width: 8
 965  * indent-tabs-mode: nil
 966  * End:
 967  *
 968  * vi: set shiftwidth=4 tabstop=8 expandtab:
 969  * :indentSize=4:tabSize=8:noTabs=true:
 970  */