/* packet-elmi.c

 * Routines for Ethernet Local Management Interface (E-LMI) dissection

 * Copyright 2014, Martin Kaiser <martin@kaiser.cx>

 *

 * based on a dissector written in lua

 * Copyright 2013, Werner Fischer (fischer-interactive.de)

 *

 * Wireshark - Network traffic analyzer

 * By Gerald Combs <gerald@wireshark.org>

 * Copyright 1998 Gerald Combs

 *

 * SPDX-License-Identifier: GPL-2.0-or-later

 */

/* E-LMI is defined in the MEF16 specification from Metro Ethernet Forum

   http://www.metroethernetforum.org/PDF_Documents/technical-specifications/MEF16.pdf */

#include "config.h"

#include <epan/packet.h>

#include <epan/etypes.h>

#include <epan/tfs.h>

static int proto_elmi;

void proto_register_elmi(void);

void proto_reg_handoff_elmi(void);

static dissector_handle_t elmi_handle;

static int ett_elmi;

static int ett_elmi_info_elem;

static int ett_elmi_sub_info_elem;

static int hf_elmi_ver;

static int hf_elmi_msg_type;

static int hf_elmi_info_elem;

static int hf_elmi_info_elem_len;

static int hf_elmi_report_type;

static int hf_elmi_snd_seq_num;

static int hf_elmi_rcv_seq_num;

static int hf_elmi_dat_inst;

static int hf_elmi_reserved;

static int hf_elmi_uni_status;

static int hf_elmi_evc_refid;

static int hf_elmi_evc_status;

static int hf_last_ie;

static int hf_map_seq;

static int hf_priority;

static int hf_default_evc;

static int hf_elmi_sub_info_elem;

static int hf_elmi_sub_info_elem_len;

static int hf_elmi_uni_id;

static int hf_elmi_evc_type;

static int hf_elmi_evc_id;

static int hf_elmi_ce_vlan_id;

static int hf_elmi_sub_info_color_mode_flag;

static int hf_elmi_sub_info_coupling_flag;

static int hf_elmi_sub_info_per_cos_bit;

static int hf_elmi_sub_cir_magnitude;

static int hf_elmi_sub_cir_multiplier;

static int hf_elmi_sub_cbs_magnitude;

static int hf_elmi_sub_cbs_multiplier;

static int hf_elmi_sub_eir_magnitude;

static int hf_elmi_sub_eir_multiplier;

static int hf_elmi_sub_ebs_magnitude;

static int hf_elmi_sub_ebs_multiplier;

static int hf_elmi_sub_user_prio_0;

static int hf_elmi_sub_user_prio_1;

static int hf_elmi_sub_user_prio_2;

static int hf_elmi_sub_user_prio_3;

static int hf_elmi_sub_user_prio_4;

static int hf_elmi_sub_user_prio_5;

static int hf_elmi_sub_user_prio_6;

static int hf_elmi_sub_user_prio_7;

static const value_string elmi_msg_type[] = {

    { 0x75, "Status enquiry" },

    { 0x7D, "Status" },

    { 0, NULL }

};

#define TAG_REPORT_TYPE 0x01

#define TAG_SEQ_NUM     0x02

#define TAG_DATA_INST   0x03

#define TAG_UNI_STATUS  0x11

#define TAG_EVC_STATUS  0x21

#define TAG_VLAN_EVC    0x22

static const value_string elmi_info_elem_tag[] = {

    { TAG_REPORT_TYPE, "Report type" },

    { TAG_SEQ_NUM,     "Sequence numbers" },

    { TAG_DATA_INST,   "Data instance" },

    { TAG_UNI_STATUS,  "UNI Status" },

    { TAG_EVC_STATUS,  "EVC Status" },

    { TAG_VLAN_EVC,    "CE-VLAN ID/EVC Map" },

    { 0, NULL }

};

static const value_string elmi_report_type[] = {

    { 0x00, "Full status" },

    { 0x01, "E-LMI check" },

    { 0x02, "Single EVC async status" },

    { 0x03, "Full status continued" },

    { 0, NULL }

};

#define SUB_TAG_UNI_ID  0x51

#define SUB_TAG_EVC_PRM 0x61

#define SUB_TAG_EVC_ID  0x62

#define SUB_TAG_EVC_MAP 0x63

#define SUB_TAG_BW_PRO  0x71

static const value_string elmi_sub_info_elem_tag[] = {

    { SUB_TAG_UNI_ID,   "UNI Identifier" },

    { SUB_TAG_EVC_PRM,  "EVC Parameters" },

    { SUB_TAG_EVC_ID,   "EVC Identifier" },

    { SUB_TAG_EVC_MAP,  "EVC Map Entry" },

    { SUB_TAG_BW_PRO,   "Bandwidth Profile" },

    { 0, NULL }

};

static const value_string elmi_vlan_id_evc_map_type[] = {

    { 0x01, "All to one binding" },

    { 0x02, "Service Multiplexing with no bundling" },

    { 0x03, "Bundling" },

    { 0, NULL }

};

static const value_string elmi_evc_status_type[] = {

    { 0x00, "Not Active" },

    { 0x01, "New and Not Active" },

    { 0x02, "Active" },

    { 0x03, "New and Active" },

    { 0x04, "Partially Active" },

    { 0x05, "New and Partially Active" },

    { 0, NULL }

};

static const value_string elmi_evc_type[] = {

    { 0x00, "Point-to-Point EVC" },

    { 0x01, "Multipoint-to-Multipoint EVC" },

    { 0, NULL }

};

static int

dissect_elmi_sub_info_elem(

        tvbuff_t *tvb, int offset, proto_tree *tree)

{

    int         offset_start;

    uint8_t     sub_tag, len;

    proto_item *tree_pi;

    proto_tree *sub_info_elem_tree = tree;

    offset_start = offset;

    sub_tag = tvb_get_uint8(tvb, offset);

    len = tvb_get_uint8(tvb, offset + 1);

    sub_info_elem_tree = proto_tree_add_subtree_format(

            tree, tvb, offset, len + 2, ett_elmi_sub_info_elem, &tree_pi,

            "Sub-information element: %s", val_to_str_const(sub_tag, elmi_sub_info_elem_tag, "unknown"));

    proto_tree_add_item(sub_info_elem_tree, hf_elmi_sub_info_elem, tvb, offset, 1, ENC_BIG_ENDIAN);

    offset++;

    proto_tree_add_item(sub_info_elem_tree, hf_elmi_sub_info_elem_len, tvb, offset, 1, ENC_BIG_ENDIAN);

    offset++;

    switch (sub_tag) {

        case SUB_TAG_UNI_ID:

            proto_tree_add_item(sub_info_elem_tree, hf_elmi_uni_id, tvb, offset, len, ENC_ASCII);

            offset += len;

            break;

        case SUB_TAG_EVC_PRM:

            proto_tree_add_item(sub_info_elem_tree, hf_elmi_evc_type, tvb, offset, 1, ENC_BIG_ENDIAN);

            offset++;

            break;

        case SUB_TAG_EVC_ID:

            proto_tree_add_item(sub_info_elem_tree, hf_elmi_evc_id, tvb, offset, len, ENC_ASCII);

            offset += len;

            break;

        case SUB_TAG_EVC_MAP:

            while(offset < (offset_start + len + 2)) {

                proto_tree_add_item(sub_info_elem_tree, hf_elmi_ce_vlan_id, tvb, offset, 2, ENC_BIG_ENDIAN);

                offset += 2;

            }

            break;

        case SUB_TAG_BW_PRO:

            proto_tree_add_item(sub_info_elem_tree, hf_elmi_sub_info_color_mode_flag, tvb, offset, 1, ENC_BIG_ENDIAN);

            proto_tree_add_item(sub_info_elem_tree, hf_elmi_sub_info_coupling_flag, tvb, offset, 1, ENC_BIG_ENDIAN);

            proto_tree_add_item(sub_info_elem_tree, hf_elmi_sub_info_per_cos_bit, tvb, offset, 1, ENC_BIG_ENDIAN);

            offset++;

            proto_tree_add_item(sub_info_elem_tree, hf_elmi_sub_cir_magnitude, tvb, offset, 1, ENC_BIG_ENDIAN);

            offset++;

            proto_tree_add_item(sub_info_elem_tree, hf_elmi_sub_cir_multiplier, tvb, offset, 2, ENC_BIG_ENDIAN);

            offset += 2;

            proto_tree_add_item(sub_info_elem_tree, hf_elmi_sub_cbs_magnitude, tvb, offset, 1, ENC_BIG_ENDIAN);

            offset++;

            proto_tree_add_item(sub_info_elem_tree, hf_elmi_sub_cbs_multiplier, tvb, offset, 1, ENC_BIG_ENDIAN);

            offset++;

            proto_tree_add_item(sub_info_elem_tree, hf_elmi_sub_eir_magnitude, tvb, offset, 1, ENC_BIG_ENDIAN);

            offset++;

            proto_tree_add_item(sub_info_elem_tree, hf_elmi_sub_eir_multiplier, tvb, offset, 2, ENC_BIG_ENDIAN);

            offset += 2;

            proto_tree_add_item(sub_info_elem_tree, hf_elmi_sub_ebs_magnitude, tvb, offset, 1, ENC_BIG_ENDIAN);

            offset++;

            proto_tree_add_item(sub_info_elem_tree, hf_elmi_sub_ebs_multiplier, tvb, offset, 1, ENC_BIG_ENDIAN);

            offset++;

            proto_tree_add_item(sub_info_elem_tree, hf_elmi_sub_user_prio_0, tvb, offset, 1, ENC_BIG_ENDIAN);

            proto_tree_add_item(sub_info_elem_tree, hf_elmi_sub_user_prio_1, tvb, offset, 1, ENC_BIG_ENDIAN);

            proto_tree_add_item(sub_info_elem_tree, hf_elmi_sub_user_prio_2, tvb, offset, 1, ENC_BIG_ENDIAN);

            proto_tree_add_item(sub_info_elem_tree, hf_elmi_sub_user_prio_3, tvb, offset, 1, ENC_BIG_ENDIAN);

            proto_tree_add_item(sub_info_elem_tree, hf_elmi_sub_user_prio_4, tvb, offset, 1, ENC_BIG_ENDIAN);

            proto_tree_add_item(sub_info_elem_tree, hf_elmi_sub_user_prio_5, tvb, offset, 1, ENC_BIG_ENDIAN);

            proto_tree_add_item(sub_info_elem_tree, hf_elmi_sub_user_prio_6, tvb, offset, 1, ENC_BIG_ENDIAN);

            proto_tree_add_item(sub_info_elem_tree, hf_elmi_sub_user_prio_7, tvb, offset, 1, ENC_BIG_ENDIAN);

            offset ++;

            break;

        default:

            offset += len;

            break;

    }

    proto_item_set_len(tree_pi, offset-offset_start);

    return offset-offset_start;

}

static int

dissect_elmi_info_elem(

        tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree)

{

    int         offset_start;

    uint8_t     tag, len, ret;

    proto_item *tree_pi;

    proto_tree *info_elem_tree;

    offset_start = offset;

    tag = tvb_get_uint8(tvb, offset);

    if (tag==0)

        return -1;

    info_elem_tree = proto_tree_add_subtree_format(

            tree, tvb, offset, -1, ett_elmi_info_elem, &tree_pi,

            "Information element: %s", val_to_str_const(tag, elmi_info_elem_tag, "unknown"));

    proto_tree_add_item(info_elem_tree, hf_elmi_info_elem,

            tvb, offset, 1, ENC_BIG_ENDIAN);

    offset++;

    len = tvb_get_uint8(tvb, offset);

    proto_tree_add_item(info_elem_tree, hf_elmi_info_elem_len,

            tvb, offset, 1, ENC_BIG_ENDIAN);

    offset++;

    switch (tag) {

        case TAG_REPORT_TYPE:

            proto_tree_add_item(info_elem_tree, hf_elmi_report_type,

                    tvb, offset, 1, ENC_BIG_ENDIAN);

            offset++;

            break;

        case TAG_SEQ_NUM:

            proto_tree_add_item(info_elem_tree, hf_elmi_snd_seq_num,

                    tvb, offset, 1, ENC_BIG_ENDIAN);

            offset++;

            proto_tree_add_item(info_elem_tree, hf_elmi_rcv_seq_num,

                    tvb, offset, 1, ENC_BIG_ENDIAN);

            offset++;

            break;

        case TAG_DATA_INST:

            proto_tree_add_item(info_elem_tree, hf_elmi_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);

            offset++;

            proto_tree_add_item(info_elem_tree, hf_elmi_dat_inst,

                    tvb, offset, 4, ENC_BIG_ENDIAN);

            offset+=4;

            break;

        case TAG_UNI_STATUS:

            proto_tree_add_item(info_elem_tree, hf_elmi_uni_status, tvb, offset, 1, ENC_BIG_ENDIAN);

            offset++;

            while(offset < (offset_start + len + 2)) {

                ret = dissect_elmi_sub_info_elem(tvb, offset, info_elem_tree);

                if (ret<=0)

                    break;

                offset += ret;

            }

            break;

        case TAG_EVC_STATUS:

            proto_tree_add_item(info_elem_tree, hf_elmi_evc_refid, tvb, offset, 2, ENC_BIG_ENDIAN);

            offset+=2;

            proto_tree_add_item(info_elem_tree, hf_elmi_evc_status, tvb, offset, 1, ENC_BIG_ENDIAN);

            offset++;

            while(offset < (offset_start + len + 2)) {

                ret = dissect_elmi_sub_info_elem(tvb, offset, info_elem_tree);

                if (ret<=0)

                    break;

                offset += ret;

            }

            break;

        case TAG_VLAN_EVC:

            proto_tree_add_item(info_elem_tree, hf_elmi_evc_refid, tvb, offset, 2, ENC_BIG_ENDIAN);

            offset+=2;

            proto_tree_add_item(info_elem_tree, hf_last_ie, tvb, offset, 1, ENC_BIG_ENDIAN);

            proto_tree_add_item(info_elem_tree, hf_map_seq, tvb, offset, 1, ENC_BIG_ENDIAN);

            offset++;

            proto_tree_add_item(info_elem_tree, hf_priority, tvb, offset, 1, ENC_BIG_ENDIAN);

            proto_tree_add_item(info_elem_tree, hf_default_evc, tvb, offset, 1, ENC_BIG_ENDIAN);

            offset++;

            while(offset < (offset_start + len + 2)) {

                ret = dissect_elmi_sub_info_elem(tvb, offset, info_elem_tree);

                if (ret<=0)

                    break;

                offset += ret;

            }

            break;

        default:

            offset += len;

            break;

    }

    proto_item_set_len(tree_pi, offset-offset_start);

    return offset-offset_start;

}

static int

dissect_elmi(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)

{

    proto_item *pi;

    proto_tree *elmi_tree;

    int         offset=0;

    uint8_t     msg_type;

    int         ret;

    col_clear(pinfo->cinfo, COL_INFO);

    col_set_str(pinfo->cinfo, COL_PROTOCOL, "E-LMI");

    pi = proto_tree_add_protocol_format(tree, proto_elmi,

            tvb, 0, tvb_captured_length(tvb),

            "Ethernet Local Management Interface (E-LMI)");

    elmi_tree = proto_item_add_subtree(pi, ett_elmi);

    proto_tree_add_item(elmi_tree, hf_elmi_ver, tvb, offset, 1, ENC_BIG_ENDIAN);

    offset++;

    msg_type = tvb_get_uint8(tvb, offset);

    proto_tree_add_item(elmi_tree, hf_elmi_msg_type,

            tvb, offset, 1, ENC_BIG_ENDIAN);

    col_append_str(pinfo->cinfo, COL_INFO,

            val_to_str(msg_type, elmi_msg_type, "unknown (0x%x)"));

    offset++;

    while (tvb_reported_length_remaining(tvb, offset) > 0) {

        ret = dissect_elmi_info_elem(tvb, offset, pinfo, elmi_tree);

        if (ret<=0)

            break;

        offset += ret;

    }

    /* XXX - can we make the eth dissector handle our (standard) padding

     * and FCS? */

    return tvb_captured_length(tvb);

}

void

proto_register_elmi(void)

{

    static hf_register_info hf[] = {

        { &hf_elmi_ver,

            { "Version", "elmi.version", FT_UINT8, BASE_DEC,

                NULL, 0, NULL, HFILL } },

        { &hf_elmi_msg_type,

            { "Message type", "elmi.message_type", FT_UINT8, BASE_HEX,

                VALS(elmi_msg_type), 0, NULL, HFILL } },

        { &hf_elmi_info_elem,

            { "Tag", "elmi.info_element.tag", FT_UINT8, BASE_HEX,

                VALS(elmi_info_elem_tag), 0, NULL, HFILL } },

        { &hf_elmi_info_elem_len,

            { "Length", "elmi.info_element.length", FT_UINT8, BASE_DEC,

                NULL, 0, NULL, HFILL } },

        { &hf_elmi_report_type,

            { "Report type", "elmi.report_type", FT_UINT8, BASE_DEC,

                VALS(elmi_report_type), 0, NULL, HFILL } },

        { &hf_elmi_snd_seq_num,

            { "Send sequence number", "elmi.snd_seq_num", FT_UINT8, BASE_DEC,

                NULL, 0, NULL, HFILL } },

        { &hf_elmi_rcv_seq_num,

            { "Receive sequence number", "elmi.rcv_seq_num", FT_UINT8, BASE_DEC,

                NULL, 0, NULL, HFILL } },

        { &hf_elmi_dat_inst,

            { "Data instance", "elmi.data_instance", FT_UINT32, BASE_HEX,

                NULL, 0, NULL, HFILL } },

        { &hf_elmi_reserved,

            { "Reserved", "elmi.reserved", FT_UINT8, BASE_HEX,

                NULL, 0, NULL, HFILL } },

        { &hf_elmi_uni_status,

            { "CE-VLAN ID/EVC Map Type", "elmi.map_type", FT_UINT8, BASE_HEX,

                VALS(elmi_vlan_id_evc_map_type), 0, NULL, HFILL } },

        { &hf_elmi_evc_refid,

            { "EVC Reference Id", "elmi.evc.refid", FT_UINT16, BASE_DEC,

                NULL, 0, NULL, HFILL } },

        { &hf_elmi_evc_status,

            { "EVC Status Type", "elmi.evc.status", FT_UINT8, BASE_HEX,

                VALS(elmi_evc_status_type), 0x7, NULL, HFILL } },

        { &hf_last_ie,

            { "Last Information Element", "elmi.map.last_ie", FT_BOOLEAN, 8,

                TFS(&tfs_yes_no), 0x40, NULL, HFILL } },

        { &hf_map_seq,

            { "CE-VLAN ID/EVC Map Sequence", "elmi.map.seq", FT_UINT8, BASE_DEC,

                NULL, 0x3F, NULL, HFILL } },

        { &hf_priority,

            { "Priority Tagged", "elmi.map.priority", FT_BOOLEAN, 8,

                TFS(&tfs_yes_no), 0x2, NULL, HFILL } },

        { &hf_default_evc,

            { "Default EVC", "elmi.map.evc", FT_BOOLEAN, 8,

                TFS(&tfs_set_notset), 0x1, NULL, HFILL } },

        { &hf_elmi_sub_info_elem,

            { "Sub-Info Element", "elmi.sub_info.tag", FT_UINT8, BASE_HEX,

                VALS(elmi_sub_info_elem_tag), 0, NULL, HFILL } },

        { &hf_elmi_sub_info_elem_len,

            { "Sub-Info Length", "elmi.sub_info.len", FT_UINT8, BASE_DEC,

                NULL, 0, NULL, HFILL } },

        { &hf_elmi_uni_id,

            { "UNI Identifier", "elmi.sub_info.uni_id", FT_STRING, BASE_NONE,

                NULL, 0, NULL, HFILL } },

        { &hf_elmi_evc_type,

            { "EVC Type", "elmi.sub_info.evc_type", FT_UINT8, BASE_DEC,

                VALS(elmi_evc_type), 0x7, NULL, HFILL } },

        { &hf_elmi_evc_id,

            { "EVC Identifier", "elmi.sub_info.evc_id", FT_STRING, BASE_NONE,

                NULL, 0, NULL, HFILL } },

        { &hf_elmi_ce_vlan_id,

            { "CE-VLAN ID", "elmi.sub_info.vlan_id", FT_UINT16, BASE_DEC,

                NULL, 0, NULL, HFILL } },

        { &hf_elmi_sub_info_color_mode_flag,

            { "Color Mode Flag", "elmi.sub_info.color_mode_flag", FT_BOOLEAN, 8,

                TFS(&tfs_set_notset), 0x4, NULL, HFILL } },

        { &hf_elmi_sub_info_coupling_flag,

            { "Coupling Flag", "elmi.sub_info.coupling_flag", FT_BOOLEAN, 8,

                TFS(&tfs_set_notset), 0x2, NULL, HFILL } },

        { &hf_elmi_sub_info_per_cos_bit,

            { "Per CoS bit values", "elmi.sub_info.per_cos_bit", FT_BOOLEAN, 8,

                TFS(&tfs_used_notused), 0x1, NULL, HFILL } },

        { &hf_elmi_sub_cir_magnitude,

            { "CIR Magnitude", "elmi.sub_info.cir_mag", FT_UINT8, BASE_DEC,

                NULL, 0, NULL, HFILL } },

        { &hf_elmi_sub_cir_multiplier,

            { "CIR Multiplier", "elmi.sub_info.cir_mult", FT_UINT16, BASE_DEC,

                NULL, 0, NULL, HFILL } },

        { &hf_elmi_sub_cbs_magnitude,

            { "CBS Magnitude", "elmi.sub_info.cbs_mag", FT_UINT8, BASE_DEC,

                NULL, 0, NULL, HFILL } },

        { &hf_elmi_sub_cbs_multiplier,

            { "CBS Multiplier", "elmi.sub_info.cbs_mult", FT_UINT8, BASE_DEC,

                NULL, 0, NULL, HFILL } },

        { &hf_elmi_sub_eir_magnitude,

            { "EIR Magnitude", "elmi.sub_info.eir_mag", FT_UINT8, BASE_DEC,

                NULL, 0, NULL, HFILL } },

        { &hf_elmi_sub_eir_multiplier,

            { "EIR Multiplier", "elmi.sub_info.eir_mult", FT_UINT16, BASE_DEC,

                NULL, 0, NULL, HFILL } },

        { &hf_elmi_sub_ebs_magnitude,

            { "EBS Magnitude", "elmi.sub_info.ebs_mag", FT_UINT8, BASE_DEC,

                NULL, 0, NULL, HFILL } },

        { &hf_elmi_sub_ebs_multiplier,

            { "EBS Multiplier", "elmi.sub_info.ebs_mult", FT_UINT8, BASE_DEC,

                NULL, 0, NULL, HFILL } },

        { &hf_elmi_sub_user_prio_0,

            { "User Priority 0", "elmi.sub_info.bw_prio0", FT_BOOLEAN, 8,

                TFS(&tfs_applicable_not_applicable), 0x1, NULL, HFILL } },

        { &hf_elmi_sub_user_prio_1,

            { "User Priority 1", "elmi.sub_info.bw_prio1", FT_BOOLEAN, 8,

                TFS(&tfs_applicable_not_applicable), 0x2, NULL, HFILL } },

        { &hf_elmi_sub_user_prio_2,

            { "User Priority 2", "elmi.sub_info.bw_prio2", FT_BOOLEAN, 8,

                TFS(&tfs_applicable_not_applicable), 0x4, NULL, HFILL } },

        { &hf_elmi_sub_user_prio_3,

            { "User Priority 3", "elmi.sub_info.bw_prio3", FT_BOOLEAN, 8,

                TFS(&tfs_applicable_not_applicable), 0x8, NULL, HFILL } },

        { &hf_elmi_sub_user_prio_4,

            { "User Priority 4", "elmi.sub_info.bw_prio4", FT_BOOLEAN, 8,

                TFS(&tfs_applicable_not_applicable), 0x10, NULL, HFILL } },

        { &hf_elmi_sub_user_prio_5,

            { "User Priority 5", "elmi.sub_info.bw_prio5", FT_BOOLEAN, 8,

                TFS(&tfs_applicable_not_applicable), 0x20, NULL, HFILL } },

        { &hf_elmi_sub_user_prio_6,

            { "User Priority 6", "elmi.sub_info.bw_prio6", FT_BOOLEAN, 8,

                TFS(&tfs_applicable_not_applicable), 0x40, NULL, HFILL } },

        { &hf_elmi_sub_user_prio_7,

            { "User Priority 7", "elmi.sub_info.bw_prio7", FT_BOOLEAN, 8,

                TFS(&tfs_applicable_not_applicable), 0x80, NULL, HFILL } },

    };

    static int *ett[] = {

        &ett_elmi,

        &ett_elmi_info_elem,

        &ett_elmi_sub_info_elem

    };

    proto_elmi = proto_register_protocol("Ethernet Local Management Interface", "E-LMI", "elmi");

    proto_register_field_array(proto_elmi, hf, array_length(hf));

    proto_register_subtree_array(ett, array_length(ett));

    elmi_handle = register_dissector("elmi", dissect_elmi, proto_elmi);

}

void

proto_reg_handoff_elmi(void)

{

    dissector_add_uint("ethertype", ETHERTYPE_ELMI, elmi_handle);

}

/*

 * Editor modelines  -  https://www.wireshark.org/tools/modelines.html

 *

 * Local variables:

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 *

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 */