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/* packet-trmac.c
 * Routines for Token-Ring Media Access Control
 * Gilbert Ramirez <gram@alumni.rice.edu>
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include "config.h"

#include <epan/packet.h>
#include <epan/to_str.h>
#include <epan/expert.h>

void proto_register_trmac(void);

static int proto_trmac = -1;
static int hf_trmac_mv = -1;
static int hf_trmac_length = -1;
static int hf_trmac_srcclass = -1;
static int hf_trmac_dstclass = -1;
static int hf_trmac_sv_len = -1;
static int hf_trmac_sv_id = -1;
static int hf_trmac_errors_iso = -1;
static int hf_trmac_errors_line = -1;
static int hf_trmac_errors_internal = -1;
static int hf_trmac_errors_burst = -1;
static int hf_trmac_errors_ac = -1;
static int hf_trmac_errors_abort = -1;
static int hf_trmac_errors_noniso = -1;
static int hf_trmac_errors_lost = -1;
static int hf_trmac_errors_congestion = -1;
static int hf_trmac_errors_fc = -1;
static int hf_trmac_errors_freq = -1;
static int hf_trmac_errors_token = -1;
static int hf_trmac_naun = -1;
static int hf_trmac_beacon_type = -1;
static int hf_trmac_assign_physical_drop_number = -1;
static int hf_trmac_error_code = -1;
static int hf_trmac_group_address32 = -1;
static int hf_trmac_transmit_status_code = -1;
static int hf_trmac_station_identifier = -1;
static int hf_trmac_sa_of_last_amp_or_smp_frame = -1;
static int hf_trmac_error_report_timer_value = -1;
static int hf_trmac_individual_address_count = -1;
static int hf_trmac_correlator = -1;
static int hf_trmac_group_address_ether = -1;
static int hf_trmac_authorized_access_priority = -1;
static int hf_trmac_physical_drop_number = -1;
static int hf_trmac_authorized_function_classes = -1;
static int hf_trmac_local_ring_number = -1;
static int hf_trmac_functional_addresses = -1;
/* Generated from convert_proto_tree_add_text.pl */
static int hf_trmac_unknown_subvector = -1;
static int hf_trmac_response_code48 = -1;
static int hf_trmac_product_instance_id = -1;
static int hf_trmac_ring_station_version_number = -1;
static int hf_trmac_wrap_data = -1;
static int hf_trmac_ring_station_status = -1;
static int hf_trmac_frame_forward = -1;
static int hf_trmac_response_code32 = -1;

static gint ett_tr_mac = -1;
static gint ett_tr_sv = -1;
static gint ett_tr_ierr_cnt = -1;
static gint ett_tr_nerr_cnt = -1;

static expert_field ei_trmac_sv_len = EI_INIT;

/* Major Vector */
static const value_string major_vector_vs[] = {
        { 0x00, "Response" },
        { 0x02, "Beacon" },
        { 0x03, "Claim Token" },
        { 0x04, "Ring Purge" },
        { 0x05, "Active Monitor Present" },
        { 0x06, "Standby Monitor Present" },
        { 0x07, "Duplicate Address Test" },
        { 0x09, "Transmit Forward" },
        { 0x0B, "Remove Ring Station" },
        { 0x0C, "Change Parameters" },
        { 0x0D, "Initialize Ring Station" },
        { 0x0E, "Request Ring Station Address" },
        { 0x0F, "Request Ring Station Address" },
        { 0x10, "Request Ring Station Attachments" },
        { 0x20, "Request Initialization" },
        { 0x22, "Report Ring Station Address" },
        { 0x23, "Report Ring Station State" },
        { 0x24, "Report Ring Station Attachments" },
        { 0x25, "Report New Active Monitor" },
        { 0x26, "Report NAUN Change" },
        { 0x27, "Report Poll Error" },
        { 0x28, "Report Monitor Errors" },
        { 0x29, "Report Error" },
        { 0x2A, "Report Transmit Forward" },
        { 0x00, NULL }
};
static value_string_ext major_vector_vs_ext = VALUE_STRING_EXT_INIT(major_vector_vs);

/* Src. and Dest. Classes */
static const value_string classes_vs[] = {
        { 0x00, "Ring Station" },
        { 0x01, "LLC Manager" },
        { 0x04, "Configuration Report Server" },
        { 0x05, "Ring Parameter Server" },
        { 0x06, "Ring Error Monitor" },
        { 0x00, NULL }
};

static const value_string subvector_vs[] = {
        { 0x01, "Beacon Type" },
        { 0x02, "Upstream Neighbor's Address" },
        { 0x03, "Local Ring Number" },
        { 0x04, "Assign Physical Drop Number" },
        { 0x05, "Error Report Timer Value" },
        { 0x06, "Authorized Function Classes" },
        { 0x07, "Authorized Access Priority" },
        { 0x09, "Correlator" },
        { 0x0A, "SA of Last AMP or SMP Frame" },
        { 0x0B, "Physical Drop Number" },
        { 0x20, "Response Code" },
        { 0x21, "Individual Address Count" },
        { 0x22, "Product Instance ID" },
        { 0x23, "Ring Station Version Number" },
        { 0x26, "Wrap Data" },
        { 0x27, "Frame Forward" },
        { 0x28, "Station Identifier" },
        { 0x29, "Ring Station Status" },
        { 0x2A, "Transmit Forward Status Code" },
        { 0x2B, "Group Addresses" },
        { 0x2C, "Functional Addresses" },
        { 0x2D, "Isolating Error Counts" },
        { 0x2E, "Non-Isolating Error Counts" },
        { 0x2F, "Function Request ID" },
        { 0x30, "Error Code" },
        { 0x00, NULL }
};
static value_string_ext subvector_vs_ext = VALUE_STRING_EXT_INIT(subvector_vs);

static const value_string beacon_vs[] = {
        { 0x00, "Recovery mode set" },
        { 0x01, "Signal loss error" },
        { 0x02, "Streaming signal not Claim Token MAC frame" },
        { 0x03, "Streaming signal, Claim Token MAC frame" },
        { 0x00, NULL }
};

/* Sub-vectors */
static int
sv_text(tvbuff_t *tvb, int svoff, packet_info *pinfo, proto_tree *tree)
{
        guint   sv_length, sv_id;
        guint16 beacon_type, ring;
        guint32 error_report_timer_value;

        proto_tree      *sv_tree, *sv_subtree;
        proto_item      *sv_item, *len_item, *ti;

        guchar          errors[6];      /* isolating or non-isolating */

        sv_tree = proto_tree_add_subtree(tree, tvb, svoff+0, 1, ett_tr_sv, &sv_item, "Subvector");

        sv_length = tvb_get_guint8(tvb, svoff+0);
        len_item = proto_tree_add_item(sv_tree, hf_trmac_sv_len, tvb, svoff+0, 1, ENC_BIG_ENDIAN);

        /* Check the SV length; it must be at least 2, to include
           the subvector length and indicator. */
        if (sv_length < 2) {
                expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
                        "Invalid subvector: length < 2");
                return 0;       /* tells our caller to give up */
        }

        sv_id = tvb_get_guint8(tvb, svoff+1);
        proto_tree_add_item(sv_tree, hf_trmac_sv_id, tvb, svoff+1, 1, ENC_BIG_ENDIAN);
        proto_item_append_text(sv_item, " (%s)", val_to_str_ext(sv_id, &subvector_vs_ext, "Unknown subvector ID 0x%02X"));

        switch(sv_id) {
                case 0x01: /* Beacon Type */
                        if (sv_length != 4) {
                                expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
                                    "Subvector length is != 4");
                                break;
                        }
                        beacon_type = tvb_get_ntohs(tvb, svoff+2);
                        proto_tree_add_item(sv_tree, hf_trmac_beacon_type, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
                        proto_item_append_text(sv_item,
                                        ": %s", val_to_str(beacon_type, beacon_vs, "Illegal value: %d"));
                        break;

                case 0x02: /* Upstream Neighbor's Address */
                        if (sv_length != 8) {
                                expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
                                    "Subvector length is != 8");
                                break;
                        }
                        proto_tree_add_item(sv_tree, hf_trmac_naun, tvb, svoff+2, sv_length-2, ENC_NA);
                        proto_item_append_text(sv_item, ": %s",
                                        tvb_ether_to_str(tvb, svoff+2));
                        break;

                case 0x03: /* Local Ring Number */
                        if (sv_length != 4) {
                                expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
                                    "Subvector length is != 4");
                                break;
                        }
                        ring = tvb_get_ntohs(tvb, svoff+2);
                        proto_tree_add_item(sv_tree, hf_trmac_local_ring_number, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
                        proto_item_append_text(sv_item,
                                ": 0x%04X (%d)", ring, ring);
                        break;

                case 0x04: /* Assign Physical Drop Number */
                        if (sv_length != 6) {
                                expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
                                    "Subvector length is != 6");
                                break;
                        }
                        proto_tree_add_item(sv_tree, hf_trmac_assign_physical_drop_number, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
                        proto_item_append_text(sv_item,
                                ": 0x%08X", tvb_get_ntohl(tvb, svoff+2) );
                        break;

                case 0x05: /* Error Report Timer Value */
                        if (sv_length != 4) {
                                expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
                                    "Subvector length is != 4");
                                break;
                        }

                        error_report_timer_value = 10 * tvb_get_ntohs(tvb, svoff+2);
                        proto_tree_add_uint_format_value(sv_tree, hf_trmac_error_report_timer_value, tvb, svoff+2, sv_length-2,
                                                                                        error_report_timer_value, "%u ms", error_report_timer_value );
                        proto_item_append_text(sv_item,
                                ": %u ms", error_report_timer_value );
                        break;

                case 0x06: /* Authorized Function Classes */
                        if (sv_length != 4) {
                                expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
                                    "Subvector length is != 4");
                                break;
                        }
                        proto_tree_add_item(sv_tree, hf_trmac_authorized_function_classes, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
                        proto_item_append_text(sv_item,
                                ": %04X",  tvb_get_ntohs(tvb, svoff+2) );
                        break;

                case 0x07: /* Authorized Access Priority */
                        if (sv_length != 4) {
                                expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
                                    "Subvector length is != 4");
                                break;
                        }
                        proto_tree_add_item(sv_tree, hf_trmac_authorized_access_priority, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
                        proto_item_append_text(sv_item,
                                ": %04X",  tvb_get_ntohs(tvb, svoff+2) );
                        break;

                case 0x09: /* Correlator */
                        if (sv_length != 4) {
                                expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
                                    "Subvector length is != 4");
                                break;
                        }
                        proto_tree_add_item(sv_tree, hf_trmac_correlator, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
                        proto_item_append_text(sv_item,
                                ": %04X",  tvb_get_ntohs(tvb, svoff+2) );
                        break;

                case 0x0A: /* SA of Last AMP or SMP Frame */
                        if (sv_length != 8) {
                                expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
                                    "Subvector length is != 8");
                                break;
                        }
                        proto_tree_add_item(sv_tree, hf_trmac_sa_of_last_amp_or_smp_frame, tvb, svoff+2, sv_length-2, ENC_NA);
                        proto_item_append_text(sv_item,
                                ": %s",
                                tvb_ether_to_str(tvb, svoff+2));
                        break;

                case 0x0B: /* Physical Drop Number */
                        if (sv_length != 6) {
                                expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
                                    "Subvector length is != 6");
                                break;
                        }
                        proto_tree_add_item(sv_tree, hf_trmac_physical_drop_number, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
                        proto_item_append_text(sv_item,
                                ": 0x%08X", tvb_get_ntohl(tvb, svoff+2) );
                        break;

                case 0x20: /* Response Code */
                        if (sv_length != 4 && sv_length != 6) {
                                expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
                                    "Subvector length is != 4 and != 6");
                                break;
                        }
                        if (sv_length == 4) {
                                proto_tree_add_uint_format_value(sv_tree, hf_trmac_response_code32, tvb, svoff+2, sv_length-2,
                                        tvb_get_ntohl(tvb, svoff+2), "0x%04X 0x%02X 0x%02x",
                                        tvb_get_ntohs(tvb, svoff+2), tvb_get_guint8(tvb, svoff+4), tvb_get_guint8(tvb, svoff+5));
                                proto_item_append_text(sv_item,
                                        ": 0x%04X 0x%02X 0x%02x",
                                        tvb_get_ntohs(tvb, svoff+2),
                                        tvb_get_guint8(tvb, svoff+4),
                                        tvb_get_guint8(tvb, svoff+5));
                        } else {
                                proto_tree_add_uint64_format_value(sv_tree, hf_trmac_response_code48, tvb, svoff+2, sv_length-2,
                                        tvb_get_ntoh48(tvb, svoff+2), "0x%04X 0x%02X 0x%06X",
                                        tvb_get_ntohs(tvb, svoff+2),
                                        tvb_get_guint8(tvb, svoff+4),
                                        tvb_get_ntoh24(tvb, svoff+5));
                                proto_item_append_text(sv_item,
                                        ": 0x%04X 0x%02X 0x%06X",
                                        tvb_get_ntohs(tvb, svoff+2),
                                        tvb_get_guint8(tvb, svoff+4),
                                        tvb_get_ntoh24(tvb, svoff+5));
                        }
                        break;

                case 0x21: /* Individual Address Count */
                        if (sv_length != 4) {
                                expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
                                    "Subvector length is != 4");
                                break;
                        }
                        proto_tree_add_item(sv_tree, hf_trmac_individual_address_count, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
                        proto_item_append_text(sv_item,
                                ": %u", tvb_get_ntohs(tvb, svoff+2) );
                        break;

                case 0x22: /* Product Instance ID */
                        proto_tree_add_item(sv_tree, hf_trmac_product_instance_id, tvb, svoff+2, sv_length-2, ENC_NA);
                        break;

                case 0x23: /* Ring Station Version Number */
                        proto_tree_add_item(sv_tree, hf_trmac_ring_station_version_number, tvb, svoff+2, sv_length-2, ENC_NA);
                        break;

                case 0x26: /* Wrap data */
                        proto_tree_add_item(sv_tree, hf_trmac_wrap_data, tvb, svoff+2, sv_length-2, ENC_NA);
                        break;

                case 0x27: /* Frame Forward */
                        proto_tree_add_item(sv_tree, hf_trmac_frame_forward, tvb, svoff+2, sv_length-2, ENC_NA);
                        break;

                case 0x28: /* Station Identifier */
                        if (sv_length != 8) {
                                expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
                                    "Subvector length is != 8");
                                break;
                        }
                        proto_tree_add_item(sv_tree, hf_trmac_station_identifier, tvb, svoff+2, sv_length-2, ENC_NA);
                        proto_item_append_text(sv_item,
                                ": %s",
                                tvb_ether_to_str(tvb, svoff+2));
                        break;

                case 0x29: /* Ring Station Status */
                        proto_tree_add_item(sv_tree, hf_trmac_ring_station_status, tvb, svoff+2, sv_length-2, ENC_NA);
                        break;

                case 0x2A: /* Transmit Status Code */
                        if (sv_length != 4) {
                                expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
                                    "Subvector length is != 4");
                                break;
                        }
                        proto_tree_add_item(sv_tree, hf_trmac_transmit_status_code, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
                        proto_item_append_text(sv_item,
                                ": %04X", tvb_get_ntohs(tvb, svoff+2) );
                        break;

                case 0x2B: /* Group Address */
                        if (sv_length != 6 && sv_length != 8) {
                                expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
                                    "Subvector length is != 6 and != 8");
                                break;
                        }
                        if (sv_length == 6) {
                                proto_tree_add_item(sv_tree, hf_trmac_group_address32, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
                                proto_item_append_text(sv_item,
                                        ": %08X", tvb_get_ntohl(tvb, svoff+2) );
                        } else {
                                proto_tree_add_item(sv_tree, hf_trmac_group_address_ether, tvb, svoff+2, sv_length-2, ENC_NA);
                                proto_item_append_text(sv_item,
                                        ": %s",
                                        tvb_ether_to_str(tvb, svoff+2));
                        }
                        break;

                case 0x2C: /* Functional Addresses */
                        if (sv_length != 6) {
                                expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
                                    "Subvector length is != 6");
                                break;
                        }
                        proto_tree_add_item(sv_tree, hf_trmac_functional_addresses, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
                        proto_item_append_text(sv_item,
                                ": %08X", tvb_get_ntohl(tvb, svoff+2) );
                        break;

                case 0x2D: /* Isolating Error Counts */
                        if (sv_length != 8) {
                                expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
                                    "Subvector length is != 8");
                                break;
                        }
                        tvb_memcpy(tvb, errors, svoff+2, 6);
                        ti = proto_tree_add_uint(sv_tree, hf_trmac_errors_iso, tvb, svoff+2, sv_length-2,
                                errors[0] + errors[1] + errors[2] + errors[3] + errors[4]);
                        sv_subtree = proto_item_add_subtree(ti, ett_tr_ierr_cnt);

                        proto_tree_add_uint(sv_subtree, hf_trmac_errors_line, tvb, svoff+2, 1, errors[0]);
                        proto_tree_add_uint(sv_subtree, hf_trmac_errors_internal, tvb, svoff+3, 1, errors[1]);
                        proto_tree_add_uint(sv_subtree, hf_trmac_errors_burst, tvb, svoff+4, 1, errors[2]);
                        proto_tree_add_uint(sv_subtree, hf_trmac_errors_ac, tvb, svoff+5, 1, errors[3]);
                        proto_tree_add_uint(sv_subtree, hf_trmac_errors_abort, tvb, svoff+6, 1, errors[4]);

                        break;

                case 0x2E: /* Non-Isolating Error Counts */
                        if (sv_length != 8) {
                                expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
                                    "Subvector length is != 8");
                                break;
                        }
                        tvb_memcpy(tvb, errors, svoff+2, 6);
                        ti = proto_tree_add_uint(sv_tree, hf_trmac_errors_noniso, tvb, svoff+2, sv_length-2,
                                errors[0] + errors[1] + errors[2] + errors[3] + errors[4]);
                        sv_subtree = proto_item_add_subtree(ti, ett_tr_nerr_cnt);

                        proto_tree_add_uint(sv_subtree, hf_trmac_errors_lost, tvb, svoff+2, 1, errors[0]);
                        proto_tree_add_uint(sv_subtree, hf_trmac_errors_congestion, tvb, svoff+3, 1, errors[1]);
                        proto_tree_add_uint(sv_subtree, hf_trmac_errors_fc, tvb, svoff+4, 1, errors[2]);
                        proto_tree_add_uint(sv_subtree, hf_trmac_errors_freq, tvb, svoff+5, 1, errors[3]);
                        proto_tree_add_uint(sv_subtree, hf_trmac_errors_token, tvb, svoff+6, 1, errors[4]);
                        break;

                case 0x30: /* Error Code */
                        if (sv_length != 4) {
                                expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
                                    "Subvector length is != 4");
                                break;
                        }
                        proto_tree_add_item(sv_tree, hf_trmac_error_code, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
                        proto_item_append_text(sv_item,
                                ": %04X", tvb_get_ntohs(tvb, svoff+2) );
                        break;

                default: /* Unknown */
                        proto_tree_add_item(sv_tree, hf_trmac_unknown_subvector, tvb, svoff+2, sv_length-2, ENC_NA);
                        break;
        }
        return sv_length;
}

static int
dissect_trmac(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
        proto_tree      *mac_tree = NULL;
        proto_item      *ti;
        int             mv_length, sv_offset, sv_additional;
        guint8          mv_val;

        col_set_str(pinfo->cinfo, COL_PROTOCOL, "TR MAC");
        col_clear(pinfo->cinfo, COL_INFO);

        mv_val = tvb_get_guint8(tvb, 3);

        /* Interpret the major vector */
        col_add_str(pinfo->cinfo, COL_INFO,
                    val_to_str_ext(mv_val, &major_vector_vs_ext, "Unknown Major Vector: %u"));

        if (tree) {
                mv_length = tvb_get_ntohs(tvb, 0);
                ti = proto_tree_add_item(tree, proto_trmac, tvb, 0, mv_length, ENC_NA);
                mac_tree = proto_item_add_subtree(ti, ett_tr_mac);

                proto_tree_add_uint(mac_tree, hf_trmac_mv, tvb, 3, 1, mv_val);
                proto_tree_add_uint_format_value(mac_tree, hf_trmac_length, tvb, 0, 2, mv_length,
                                "%d bytes", mv_length);
                proto_tree_add_uint(mac_tree, hf_trmac_srcclass, tvb, 2, 1, tvb_get_guint8(tvb, 2) & 0x0f);
                proto_tree_add_uint(mac_tree, hf_trmac_dstclass, tvb, 2, 1, tvb_get_guint8(tvb, 2) >> 4 );

                /* interpret the subvectors */
                sv_offset = 4;
                while (sv_offset < mv_length) {
                        sv_additional = sv_text(tvb, sv_offset, pinfo, mac_tree);

                        /* if this is a bad packet, we could get a 0-length added here,
                         * looping forever */
                        if (sv_additional > 0)
                                sv_offset += sv_additional;
                        else
                                break;
                }
        }
        return tvb_captured_length(tvb);
}

void
proto_register_trmac(void)
{
        static hf_register_info hf[] = {
                { &hf_trmac_mv,
                { "Major Vector",                       "trmac.mvec", FT_UINT8, BASE_HEX|BASE_EXT_STRING, &major_vector_vs_ext, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_length,
                { "Total Length",                       "trmac.length", FT_UINT8, BASE_DEC, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_srcclass,
                { "Source Class",                       "trmac.srcclass", FT_UINT8, BASE_HEX, VALS(classes_vs), 0x0,
                        NULL, HFILL }},

                { &hf_trmac_dstclass,
                { "Destination Class",                  "trmac.dstclass", FT_UINT8, BASE_HEX, VALS(classes_vs), 0x0,
                        NULL, HFILL }},

                { &hf_trmac_sv_len,
                { "Subvector Length",                   "trmac.svec.len", FT_UINT8, BASE_DEC, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_sv_id,
                { "Subvector Identifier",               "trmac.svec.id", FT_UINT8, BASE_HEX|BASE_EXT_STRING, &subvector_vs_ext, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_errors_iso,
                { "Isolating Errors",                   "trmac.errors.iso", FT_UINT16, BASE_DEC, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_errors_line,
                { "Line Errors",                        "trmac.errors.line", FT_UINT8, BASE_DEC, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_errors_internal,
                { "Internal Errors",                    "trmac.errors.internal", FT_UINT8, BASE_DEC, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_errors_burst,
                { "Burst Errors",                       "trmac.errors.burst", FT_UINT8, BASE_DEC, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_errors_ac,
                { "A/C Errors",                         "trmac.errors.ac", FT_UINT8, BASE_DEC, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_errors_abort,
                { "Abort Delimiter Transmitted Errors", "trmac.errors.abort", FT_UINT8, BASE_DEC, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_errors_noniso,
                { "Non-Isolating Errors",               "trmac.errors.noniso", FT_UINT16, BASE_DEC, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_errors_lost,
                { "Lost Frame Errors",                  "trmac.errors.lost", FT_UINT8, BASE_DEC, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_errors_congestion,
                { "Receiver Congestion Errors",         "trmac.errors.congestion", FT_UINT8, BASE_DEC, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_errors_fc,
                { "Frame-Copied Errors",                "trmac.errors.fc", FT_UINT8, BASE_DEC, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_errors_freq,
                { "Frequency Errors",                   "trmac.errors.freq", FT_UINT8, BASE_DEC, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_errors_token,
                { "Token Errors",                       "trmac.errors.token", FT_UINT8, BASE_DEC, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_naun,
                { "Upstream Neighbor's Address",        "trmac.naun", FT_ETHER, BASE_NONE, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_beacon_type,
                { "Beacon Type",                        "trmac.beacon_type", FT_UINT16, BASE_DEC, VALS(beacon_vs), 0x0,
                        NULL, HFILL }},

                { &hf_trmac_local_ring_number,
                { "Local Ring Number",                  "trmac.local_ring_number", FT_UINT16, BASE_HEX_DEC, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_assign_physical_drop_number,
                { "Assign Physical Drop Number",        "trmac.assign_physical_drop_number", FT_UINT32, BASE_HEX, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_error_report_timer_value,
                { "Error Report Timer Value",           "trmac.error_report_timer_value", FT_UINT16, BASE_DEC, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_authorized_function_classes,
                { "Authorized Function Classes",        "trmac.authorized_function_classes", FT_UINT16, BASE_HEX, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_authorized_access_priority,
                { "Authorized Access Priority",         "trmac.authorized_access_priority", FT_UINT16, BASE_HEX, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_correlator,
                { "Correlator",                         "trmac.correlator", FT_UINT16, BASE_HEX, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_sa_of_last_amp_or_smp_frame,
                { "SA of Last AMP or SMP Frame",        "trmac.sa_of_last_amp_or_smp_frame", FT_ETHER, BASE_NONE, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_physical_drop_number,
                { "Physical Drop Number",               "trmac.physical_drop_number", FT_UINT32, BASE_HEX, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_individual_address_count,
                { "Individual Address Count",           "trmac.individual_address_count", FT_UINT16, BASE_DEC, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_station_identifier,
                { "Station Identifier",                 "trmac.station_identifier", FT_ETHER, BASE_NONE, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_transmit_status_code,
                { "Transmit Status Code",               "trmac.transmit_status_code", FT_UINT16, BASE_HEX, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_group_address32,
                { "Group Address",                      "trmac.group_addres32s", FT_UINT32, BASE_HEX, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_group_address_ether,
                { "Group Address",                      "trmac.group_address_ether", FT_ETHER, BASE_NONE, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_functional_addresses,
                { "Functional Addresses",               "trmac.functional_addresses", FT_UINT32, BASE_HEX, NULL, 0x0,
                        NULL, HFILL }},

                { &hf_trmac_error_code,
                { "Error Code",                         "trmac.error_code", FT_UINT16, BASE_HEX, NULL, 0x0,
                        NULL, HFILL }},

                /* Generated from convert_proto_tree_add_text.pl */
                { &hf_trmac_response_code32, { "Response Code", "trmac.response_code", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }},
                { &hf_trmac_response_code48, { "Response Code", "trmac.response_code48", FT_UINT64, BASE_HEX, NULL, 0x0, NULL, HFILL }},
                { &hf_trmac_product_instance_id, { "Product Instance ID", "trmac.product_instance_id", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
                { &hf_trmac_ring_station_version_number, { "Ring Station Version Number", "trmac.ring_station_version_number", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
                { &hf_trmac_wrap_data, { "Wrap Data", "trmac.wrap_data", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
                { &hf_trmac_frame_forward, { "Frame Forward", "trmac.frame_forward", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
                { &hf_trmac_ring_station_status, { "Ring Station Status", "trmac.ring_station_status", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
                { &hf_trmac_unknown_subvector, { "Unknown Subvector", "trmac.unknown_subvector", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},

        };
        static gint *ett[] = {
                &ett_tr_mac,
                &ett_tr_sv,
                &ett_tr_ierr_cnt,
                &ett_tr_nerr_cnt,
        };

        static ei_register_info ei[] = {
                { &ei_trmac_sv_len, { "trmac.svec.len.invalid", PI_MALFORMED, PI_ERROR, "Invalid length", EXPFILL }},
        };

        expert_module_t* expert_trmac;

        proto_trmac = proto_register_protocol("Token-Ring Media Access Control", "TR MAC", "trmac");
        proto_register_field_array(proto_trmac, hf, array_length(hf));
        proto_register_subtree_array(ett, array_length(ett));
        expert_trmac = expert_register_protocol(proto_trmac);
        expert_register_field_array(expert_trmac, ei, array_length(ei));

        register_dissector("trmac", dissect_trmac, proto_trmac);
}

/*
 * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
 *
 * Local variables:
 * c-basic-offset: 8
 * tab-width: 8
 * indent-tabs-mode: t
 * End:
 *
 * vi: set shiftwidth=8 tabstop=8 noexpandtab:
 * :indentSize=8:tabSize=8:noTabs=false:
 */