/* packet-docsis-tlv.c

 *

 * Routines to Dissect Appendix C TLVs

 * Copyright 2015, Adrian Simionov <daniel.simionov@gmail.com>

 * Copyright 2002, Anand V. Narwani <anand[AT]narwani.org>

 * Copyright 2017, Bruno Verstuyft <bruno.verstuyft@excentis.com>

 *

 * Wireshark - Network traffic analyzer

 * By Gerald Combs <gerald@wireshark.org>

 * Copyright 1998 Gerald Combs

 *

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

 */

#include "config.h"

#include <epan/packet.h>

#include <epan/expert.h>

#include <epan/reassemble.h>

#include <epan/tfs.h>

#include <epan/unit_strings.h>

#include "packet-docsis-tlv.h"

/* This module will dissect the Appendix C TLVs.  Please see:

 * http://www.cablemodem.com/specifications/specifications.html

 *

 * The main dissector is dissect_docsis_tlv.  This routine will dissect

 * top level TLVs and call sub-dissectors for the sub-TLVs.

 */

void proto_register_docsis_tlv(void);

void proto_reg_handoff_docsis_tlv(void);

/* Initialize the protocol and registered fields */

static dissector_handle_t docsis_vsif_handle;

static dissector_handle_t docsis_ucd_handle;

static dissector_handle_t docsis_rba_handle;

static int proto_docsis_tlv;

static int hf_docsis_tlv_down_freq;

static int hf_docsis_tlv_upstream_chid;

static int hf_docsis_tlv_net_access;

/* static int hf_docsis_tlv_cos; */

/* static int hf_docsis_tlv_mcap; */

static int hf_docsis_tlv_privacy_enable;

static int hf_docsis_tlv_max_cpe;

static int hf_docsis_tlv_max_classifiers;

static int hf_docsis_tlv_snmp_access;

static int hf_docsis_tlv_snmp_obj;

static int hf_docsis_tlv_svc_unavail;

static int hf_docsis_tlv_svc_unavail_classid;

static int hf_docsis_tlv_svc_unavail_type;

static int hf_docsis_tlv_svc_unavail_code;

static int hf_docsis_tlv_bpi;

/* static int hf_docsis_tlv_phs; */

static int hf_docsis_tlv_hmac_digest;

static int hf_docsis_tlv_tftp_server_timestamp;

static int hf_docsis_tlv_tftp_prov_modem_address;

/* static int hf_docsis_tlv_upclsfr; */

/* static int hf_docsis_tlv_downclsfr; */

/* static int hf_docsis_tlv_upsflow; */

/* static int hf_docsis_tlv_downsflow; */

/* static int hf_docsis_tlv_vendor_spec; */

static int hf_docsis_tlv_cm_mic;

static int hf_docsis_tlv_cmts_mic;

static int hf_docsis_tlv_auth_block;

static int hf_docsis_tlv_key_seq_num;

static int hf_docsis_tlv_snmpv3_kick;

static int hf_docsis_tlv_snmpv3_kick_name;

static int hf_docsis_tlv_snmpv3_kick_publicnum;

static int hf_docsis_tlv_mfgr_cvc;

static int hf_docsis_tlv_cosign_cvc;

static int hf_docsis_tlv_vendor_id;

static int hf_docsis_tlv_sw_file;

static int hf_docsis_tlv_sw_upg_srvr;

static int hf_docsis_tlv_cpe_ethernet;

static int hf_docsis_tlv_modem_addr;

static int hf_docsis_tlv_rng_tech;

static int hf_docsis_tlv_subs_mgmt_ctrl;

static int hf_docsis_tlv_subs_mgmt_ip_table;

static int hf_docsis_tlv_subs_mgmt_ip_entry;

static int hf_docsis_tlv_subs_mgmt_filter_grps;

static int hf_docsis_tlv_snmpv3_ntfy_rcvr;

static int hf_docsis_tlv_enable_20_mode;

static int hf_docsis_tlv_enable_test_modes;

/* static int hf_docsis_tlv_ds_ch_list; */

static int hf_docsis_tlv_mc_mac_address;

/* static int hf_docsis_tlv_dut_filter; */

/* static int hf_docsis_tlv_tcc; */

/* static int hf_docsis_tlv_sid_cl; */

/* static int hf_docsis_tlv_rcp; */

/* static int hf_docsis_tlv_rcc; */

/* static int hf_docsis_tlv_dsid; */

/* static int hf_docsis_tlv_sec_assoc; */

static int hf_docsis_tlv_init_ch_timeout;

/* static int hf_docsis_tlv_ch_asgn; */

static int hf_docsis_tlv_cm_init_reason;

static int hf_docsis_tlv_sw_upg_srvr_ipv6;

static int hf_docsis_tlv_tftp_prov_cm_ipv6_addr;

static int hf_docsis_tlv_us_drop_clfy;

static int hf_docsis_tlv_subs_mgmt_ipv6_lst;

static int hf_docsis_tlv_us_drop_clfy_group_id;

static int hf_docsis_tlv_subs_mgmt_ctrl_max_cpe_ipv6;

/* static int hf_docsis_tlv_cmts_mc_sess_enc; */

static int hf_docsis_tlv_cos_id;

static int hf_docsis_tlv_cos_sid;

static int hf_docsis_tlv_cos_max_down;

static int hf_docsis_tlv_cos_max_up;

static int hf_docsis_tlv_cos_up_chnl_pri;

static int hf_docsis_tlv_cos_min_grntd_up;

static int hf_docsis_tlv_cos_max_up_burst;

static int hf_docsis_tlv_cos_privacy_enable;

static int hf_docsis_tlv_mcap_concat;

static int hf_docsis_tlv_mcap_docs_ver;

static int hf_docsis_tlv_mcap_frag;

static int hf_docsis_tlv_mcap_phs;

static int hf_docsis_tlv_mcap_igmp;

static int hf_docsis_tlv_mcap_down_said;

static int hf_docsis_tlv_mcap_up_sid;

static int hf_docsis_tlv_mcap_privacy;

static int hf_docsis_tlv_mcap_8021P_filter;

static int hf_docsis_tlv_mcap_8021Q_filter;

static int hf_docsis_tlv_mcap_xmit_eq_taps_per_sym;

static int hf_docsis_tlv_mcap_xmit_eq_taps;

static int hf_docsis_tlv_mcap_dcc;

static int hf_docsis_tlv_mcap_ip_filters;

static int hf_docsis_tlv_mcap_llc_filters;

static int hf_docsis_tlv_mcap_exp_unicast_sid;

static int hf_docsis_tlv_mcap_rnghoff_cm;

static int hf_docsis_tlv_mcap_rnghoff_erouter;

static int hf_docsis_tlv_mcap_rnghoff_emta;

static int hf_docsis_tlv_mcap_rnghoff_estb;

static int hf_docsis_tlv_mcap_l2vpn;

static int hf_docsis_tlv_mcap_l2vpn_esafe;

static int hf_docsis_tlv_mcap_dut_filtering;

static int hf_docsis_tlv_mcap_us_freq_range;

static int hf_docsis_tlv_mcap_us_srate_160;

static int hf_docsis_tlv_mcap_us_srate_320;

static int hf_docsis_tlv_mcap_us_srate_640;

static int hf_docsis_tlv_mcap_us_srate_1280;

static int hf_docsis_tlv_mcap_us_srate_2560;

static int hf_docsis_tlv_mcap_us_srate_5120;

static int hf_docsis_tlv_mcap_sac;

static int hf_docsis_tlv_mcap_code_hop_mode2;

static int hf_docsis_tlv_mcap_mtc;

static int hf_docsis_tlv_mcap_512_msps_utc;

static int hf_docsis_tlv_mcap_256_msps_utc;

static int hf_docsis_tlv_mcap_total_sid_cluster;

static int hf_docsis_tlv_mcap_sid_per_sf;

static int hf_docsis_tlv_mcap_mrc;

static int hf_docsis_tlv_mcap_total_dsid;

static int hf_docsis_tlv_mcap_reseq_dsid;

static int hf_docsis_tlv_mcap_mc_dsid;

static int hf_docsis_tlv_mcap_mc_dsid_fwd;

static int hf_docsis_tlv_mcap_fctype_fwd;

static int hf_docsis_tlv_mcap_dpv_path;

static int hf_docsis_tlv_mcap_dpv_packet;

static int hf_docsis_tlv_mcap_ugs;

static int hf_docsis_tlv_mcap_map_ucd;

static int hf_docsis_tlv_mcap_udc;

static int hf_docsis_tlv_mcap_ipv6;

static int hf_docsis_tlv_mcap_ext_us_trans_power;

static int hf_docsis_tlv_mcap_em;

static int hf_docsis_tlv_mcap_em_1x1;

static int hf_docsis_tlv_mcap_em_light_sleep;

static int hf_docsis_tlv_mcap_cm_status_ack;

static int hf_docsis_tlv_mcap_em_pref;

static int hf_docsis_tlv_mcap_em_pref_1x1;

static int hf_docsis_tlv_mcap_em_pref_dls;

static int hf_docsis_tlv_mcap_ext_pkt_len_sup_cap;

static int hf_docsis_tlv_mcap_ofdm_mult_recv_chan_sup;

static int hf_docsis_tlv_mcap_ofdma_mult_trans_chan_sup;

static int hf_docsis_tlv_mcap_down_ofdm_prof_sup;

static int hf_docsis_tlv_mcap_ofdm_chan_subc_qam_mod_sup;

static int hf_docsis_tlv_mcap_ofdm_chan_subc_qam_mod_sup_reserved;

static int hf_docsis_tlv_mcap_ofdm_chan_subc_qam_mod_sup_qpsk;

static int hf_docsis_tlv_mcap_ofdm_chan_subc_qam_mod_sup_16qam;

static int hf_docsis_tlv_mcap_ofdm_chan_subc_qam_mod_sup_64qam;

static int hf_docsis_tlv_mcap_ofdm_chan_subc_qam_mod_sup_128qam;

static int hf_docsis_tlv_mcap_ofdm_chan_subc_qam_mod_sup_256qam;

static int hf_docsis_tlv_mcap_ofdm_chan_subc_qam_mod_sup_512qam;

static int hf_docsis_tlv_mcap_ofdm_chan_subc_qam_mod_sup_1024qam;

static int hf_docsis_tlv_mcap_ofdm_chan_subc_qam_mod_sup_2048qam;

static int hf_docsis_tlv_mcap_ofdm_chan_subc_qam_mod_sup_4096qam;

static int hf_docsis_tlv_mcap_ofdm_chan_subc_qam_mod_sup_8192qam;

static int hf_docsis_tlv_mcap_ofdm_chan_subc_qam_mod_sup_16384qam;

static int hf_docsis_tlv_mcap_ofdma_chan_subc_qam_mod_sup;

static int hf_docsis_tlv_mcap_ofdma_chan_subc_qam_mod_sup_reserved;

static int hf_docsis_tlv_mcap_ofdma_chan_subc_qam_mod_sup_qpsk;

static int hf_docsis_tlv_mcap_ofdma_chan_subc_qam_mod_sup_8qam;

static int hf_docsis_tlv_mcap_ofdma_chan_subc_qam_mod_sup_16qam;

static int hf_docsis_tlv_mcap_ofdma_chan_subc_qam_mod_sup_32qam;

static int hf_docsis_tlv_mcap_ofdma_chan_subc_qam_mod_sup_64qam;

static int hf_docsis_tlv_mcap_ofdma_chan_subc_qam_mod_sup_128qam;

static int hf_docsis_tlv_mcap_ofdma_chan_subc_qam_mod_sup_256qam;

static int hf_docsis_tlv_mcap_ofdma_chan_subc_qam_mod_sup_512qam;

static int hf_docsis_tlv_mcap_ofdma_chan_subc_qam_mod_sup_1024qam;

static int hf_docsis_tlv_mcap_ofdma_chan_subc_qam_mod_sup_2048qam;

static int hf_docsis_tlv_mcap_ofdma_chan_subc_qam_mod_sup_4096qam;

static int hf_docsis_tlv_mcap_ofdma_chan_subc_qam_mod_sup_8192qam;

static int hf_docsis_tlv_mcap_ofdma_chan_subc_qam_mod_sup_16384qam;

static int hf_docsis_tlv_mcap_down_lower_band_edge_conf;

static int hf_docsis_tlv_mcap_down_lower_band_edge_conf_108;

static int hf_docsis_tlv_mcap_down_lower_band_edge_conf_258;

static int hf_docsis_tlv_mcap_down_upper_band_edge_conf;

static int hf_docsis_tlv_mcap_down_upper_band_edge_conf_1218;

static int hf_docsis_tlv_mcap_down_upper_band_edge_conf_1794;

static int hf_docsis_tlv_mcap_down_upper_band_edge_conf_1002;

static int hf_docsis_tlv_mcap_dipl_up_upper_band_edge_conf;

static int hf_docsis_tlv_mcap_docsis_time_prot_mode;

static int hf_docsis_tlv_mcap_docsis_time_prot_perf_sup;

static int hf_docsis_tlv_mcap_pmax;

static int hf_docsis_tlv_mcap_dipl_down_lower_band_edge;

static int hf_docsis_tlv_mcap_dipl_down_lower_band_edge_108;

static int hf_docsis_tlv_mcap_dipl_down_lower_band_edge_258;

static int hf_docsis_tlv_mcap_dipl_down_upper_band_edge;

static int hf_docsis_tlv_mcap_dipl_down_upper_band_edge_1218;

static int hf_docsis_tlv_mcap_dipl_down_upper_band_edge_1794;

static int hf_docsis_tlv_mcap_dipl_down_upper_band_edge_1002;

static int hf_docsis_tlv_mcap_dipl_up_upper_band_edge;

static int hf_docsis_tlv_mcap_dipl_up_upper_band_edge_42;

static int hf_docsis_tlv_mcap_dipl_up_upper_band_edge_65;

static int hf_docsis_tlv_mcap_dipl_up_upper_band_edge_85;

static int hf_docsis_tlv_mcap_dipl_up_upper_band_edge_117;

static int hf_docsis_tlv_mcap_dipl_up_upper_band_edge_204;

static int hf_docsis_tlv_mcap_advanced_band_plan;

static int hf_docsis_tlv_mcap_advanced_band_plan_fdx_l;

static int hf_docsis_tlv_mcap_advanced_band_plan_fdx;

static int hf_docsis_tlv_mcap_advanced_band_plan_fdd;

static int hf_docsis_tlv_mcap_advanced_band_plan_reserved;

static int hf_docsis_tlv_mcap_ext_sf_cluster_assign_sup;

static int hf_docsis_tlv_mcap_low_latency_sup;

static int hf_docsis_tlv_mcap_adv_down_lower_band_edge_conf;

static int hf_docsis_tlv_mcap_adv_down_upper_band_edge_conf;

static int hf_docsis_tlv_mcap_adv_up_upper_band_edge_conf;

static int hf_docsis_tlv_mcap_adv_down_lower_band_edge_option;

static int hf_docsis_tlv_mcap_adv_down_upper_band_edge_option;

static int hf_docsis_tlv_mcap_adv_up_upper_band_edge_option;

static int hf_docsis_tlv_mcap_extended_power_options;

static int hf_docsis_tlv_clsfr_ref;

static int hf_docsis_tlv_clsfr_id;

static int hf_docsis_tlv_clsfr_sflow_ref;

static int hf_docsis_tlv_clsfr_sflow_id;

static int hf_docsis_tlv_clsfr_rule_pri;

static int hf_docsis_tlv_clsfr_act_state;

static int hf_docsis_tlv_clsfr_dsc_act;

/* static int hf_docsis_tlv_clsfr_err; */

/* static int hf_docsis_tlv_ipclsfr; */

/* static int hf_docsis_tlv_ethclsfr; */

/* static int hf_docsis_tlv_dot1qclsfr; */

static int hf_docsis_tlv_clsfr_vendor_spc;

static int hf_docsis_tlv_clsfr_err_param;

static int hf_docsis_tlv_clsfr_err_code;

static int hf_docsis_tlv_clsfr_err_msg;

static int hf_docsis_tlv_ipclsfr_tosmask;

static int hf_docsis_tlv_ipclsfr_ipproto;

static int hf_docsis_tlv_ipclsfr_src;

static int hf_docsis_tlv_ipclsfr_dst;

static int hf_docsis_tlv_ipclsfr_srcmask;

static int hf_docsis_tlv_ipclsfr_dstmask;

static int hf_docsis_tlv_ipclsfr_sport_start;

static int hf_docsis_tlv_ipclsfr_sport_end;

static int hf_docsis_tlv_ipclsfr_dport_start;

static int hf_docsis_tlv_ipclsfr_dport_end;

static int hf_docsis_tlv_ip6clsfr_tc_low;

static int hf_docsis_tlv_ip6clsfr_tc_high;

static int hf_docsis_tlv_ip6clsfr_tc_mask;

static int hf_docsis_tlv_ip6clsfr_flow_label;

static int hf_docsis_tlv_ip6clsfr_next_header;

static int hf_docsis_tlv_ip6clsfr_src;

static int hf_docsis_tlv_ip6clsfr_src_prefix_length;

static int hf_docsis_tlv_ip6clsfr_dst;

static int hf_docsis_tlv_ip6clsfr_dst_prefix_length;

static int hf_docsis_tlv_ethclsfr_dmac;

static int hf_docsis_tlv_ethclsfr_smac;

static int hf_docsis_tlv_ethclsfr_ethertype;

static int hf_docsis_tlv_dot1qclsfr_user_pri;

static int hf_docsis_tlv_dot1qclsfr_vlanid;

static int hf_docsis_tlv_dot1qclsfr_vendorspec;

static int hf_docsis_tlv_sflow_ref;

static int hf_docsis_tlv_sflow_id;

static int hf_docsis_tlv_sflow_sid;

static int hf_docsis_tlv_sflow_classname;

static int hf_docsis_tlv_sflow_qos_param;

/* static int hf_docsis_tlv_sflow_err; */

static int hf_docsis_tlv_sflow_traf_pri;

static int hf_docsis_tlv_sflow_max_sus;

static int hf_docsis_tlv_sflow_max_burst;

static int hf_docsis_tlv_sflow_min_traf;

static int hf_docsis_tlv_sflow_ass_min_pkt_size;

static int hf_docsis_tlv_sflow_timeout_active;

static int hf_docsis_tlv_sflow_timeout_admitted;

static int hf_docsis_tlv_sflow_peak_traffic_rate;

static int hf_docsis_tlv_sflow_req_attr_mask;

static int hf_docsis_tlv_sflow_forb_attr_mask;

static int hf_docsis_tlv_sflow_attr_aggr_rule_mask;

static int hf_docsis_tlv_sflow_vendor_spec;

static int hf_docsis_tlv_sflow_max_concat_burst;

static int hf_docsis_tlv_sflow_sched_type;

static int hf_docsis_tlv_sflow_reqxmit_pol;

static int hf_docsis_tlv_sflow_reqxmit_all_cm_broadcast;

static int hf_docsis_tlv_sflow_reqxmit_priority_multicast;

static int hf_docsis_tlv_sflow_reqxmit_req_data_requests;

static int hf_docsis_tlv_sflow_reqxmit_req_data_data;

static int hf_docsis_tlv_sflow_reqxmit_piggy_back;

static int hf_docsis_tlv_sflow_reqxmit_concatenate_data;

static int hf_docsis_tlv_sflow_reqxmit_fragment;

static int hf_docsis_tlv_sflow_reqxmit_suppress_payload;

static int hf_docsis_tlv_sflow_reqxmit_drop_packets;

static int hf_docsis_tlv_sflow_nominal_polling;

static int hf_docsis_tlv_sflow_tolerated_jitter;

static int hf_docsis_tlv_sflow_ugs_size;

static int hf_docsis_tlv_sflow_nom_grant_intvl;

static int hf_docsis_tlv_sflow_tol_grant_jitter;

static int hf_docsis_tlv_sflow_grants_per_intvl;

static int hf_docsis_tlv_sflow_ip_tos_overwrite;

static int hf_docsis_tlv_sflow_ugs_timeref;

static int hf_docsis_tlv_sflow_cont_req_backoff_window_mult;

static int hf_docsis_tlv_sflow_num_of_bytes_requested_mult;

static int hf_docsis_tlv_sflow_max_down_latency;

static int hf_docsis_tlv_sflow_down_reseq;

static int hf_docsis_tlv_sflow_err_param;

static int hf_docsis_tlv_sflow_err_code;

static int hf_docsis_tlv_sflow_err_msg;

static int hf_docsis_tlv_phs_class_ref;

static int hf_docsis_tlv_phs_class_id;

static int hf_docsis_tlv_phs_sflow_ref;

static int hf_docsis_tlv_phs_sflow_id;

static int hf_docsis_tlv_phs_dsc_action;

/* static int hf_docsis_tlv_phs_err; */

static int hf_docsis_tlv_phs_phsf;

static int hf_docsis_tlv_phs_phsm;

/* static int hf_docsis_tlv_phs_phsv; */

static int hf_docsis_tlv_phs_phsi;

static int hf_docsis_tlv_phs_phss;

static int hf_docsis_tlv_phs_dbc_action;

static int hf_docsis_tlv_phs_vendorspec;

static int hf_docsis_tlv_phs_err_param;

static int hf_docsis_tlv_phs_err_code;

static int hf_docsis_tlv_phs_err_msg;

/* static int hf_docsis_tlv_ds_ch_list_single; */

/* static int hf_docsis_tlv_ds_ch_list_range; */

static int hf_docsis_tlv_ds_ch_list_default_timeout;

static int hf_docsis_tlv_single_ch_timeout;

static int hf_docsis_tlv_single_ch_freq;

static int hf_docsis_tlv_freq_rng_timeout;

static int hf_docsis_tlv_freq_rng_start;

static int hf_docsis_tlv_freq_rng_end;

static int hf_docsis_tlv_freq_rng_step;

static int hf_docsis_tlv_dut_filter_control;

static int hf_docsis_tlv_dut_filter_cmim;

static int hf_docsis_tlv_tcc_refid;

static int hf_docsis_tlv_tcc_us_ch_action;

static int hf_docsis_tlv_tcc_us_ch_id;

static int hf_docsis_tlv_tcc_new_us_ch_id;

static int hf_docsis_tlv_tcc_ucd;

static int hf_docsis_tlv_tcc_rng_sid;

static int hf_docsis_tlv_tcc_init_tech;

/* static int hf_docsis_tlv_tcc_rng_parms; */

static int hf_docsis_tlv_tcc_dyn_rng_win;

static int hf_docsis_tlv_tcc_p_16hi;

static int hf_docsis_tlv_tcc_oudp_iuc;

static int hf_docsis_tlv_tcc_extended_drw;

static int hf_docsis_tlv_tcc_extended_us_rng_pwr;

static int hf_docsis_tlv_tcc_oudp_sounding_sid;

/* static int hf_docsis_tlv_tcc_err; */

static int hf_docsis_rng_parms_us_ch_id;

static int hf_docsis_rng_parms_time_off_int;

static int hf_docsis_rng_parms_time_off_frac;

static int hf_docsis_rng_parms_power_off;

static int hf_docsis_rng_parms_freq_off;

static int hf_docsis_tcc_err_subtype;

static int hf_docsis_tcc_err_code;

static int hf_docsis_tcc_err_msg;

static int hf_docsis_sid_cl_sf_id;

/* static int hf_docsis_sid_cl_enc; */

/* static int hf_docsis_sid_cl_so_crit; */

static int hf_docsis_sid_cl_enc_id;

/* static int hf_docsis_sid_cl_enc_map; */

static int hf_docsis_sid_cl_map_us_ch_id;

static int hf_docsis_sid_cl_map_sid;

static int hf_docsis_sid_cl_map_action;

static int hf_docsis_sid_cl_so_max_req;

static int hf_docsis_sid_cl_so_max_out_bytes;

static int hf_docsis_sid_cl_so_max_req_bytes;

static int hf_docsis_sid_cl_so_max_time;

static int hf_docsis_tlv_rcp_id;

static int hf_docsis_tlv_rcp_name;

static int hf_docsis_tlv_rcp_freq_spc;

/* static int hf_docsis_tlv_rcp_rcv_mod_enc; */

/* static int hf_docsis_tlv_rcp_rcv_ch; */

/* static int hf_docsis_tlv_rcp_ven_spec; */

static int hf_docsis_rcv_mod_enc_idx;

static int hf_docsis_rcv_mod_enc_adj_ch;

/* static int hf_docsis_rcv_mod_enc_ch_bl_rng; */

static int hf_docsis_rcv_mod_enc_ctr_freq_asgn;

static int hf_docsis_rcv_mod_enc_rsq_ch_subs_cap;

static int hf_docsis_rcv_mod_enc_conn;

static int hf_docsis_rcv_mod_enc_phy_layr_parms;

static int hf_docsis_rcc_rcv_mod_enc_idx;

static int hf_docsis_rcc_rcv_mod_enc_ctr_freq_asgn;

static int hf_docsis_rcc_rcv_mod_enc_conn;

static int hf_docsis_ch_bl_rng_min_ctr_freq;

static int hf_docsis_ch_bl_rng_max_ctr_freq;

static int hf_docsis_rcv_ch_idx;

static int hf_docsis_rcv_ch_conn;

static int hf_docsis_rcv_ch_conn_off;

static int hf_docsis_rcv_ch_prim_ds_ch_ind;

static int hf_docsis_rcc_rcv_ch_idx;

static int hf_docsis_rcc_rcv_ch_conn;

static int hf_docsis_rcc_rcv_ch_ctr_freq_asgn;

static int hf_docsis_rcc_rcv_ch_prim_ds_ch_ind;

static int hf_docsis_tlv_rcc_id;

static int hf_docsis_tlv_rcc_partial_serv_down_chan_id;

static int hf_docsis_tlv_rcc_srcc_prim_ds_chan_assign_ds_ch_id;

static int hf_docsis_tlv_rcc_srcc_ds_chan_assign_ds_ch_id;

static int hf_docsis_tlv_rcc_srcc_ds_prof_assign_dcid;

static int hf_docsis_tlv_rcc_srcc_ds_prof_asssign_prof_list_prof_id;

static int hf_docsis_tlv_rcc_prim_down_chan;

/* static int hf_docsis_tlv_rcc_rcv_mod_enc; */

/* static int hf_docsis_tlv_rcc_rcv_ch; */

/* static int hf_docsis_tlv_rcc_part_serv_ds_ch; */

/* static int hf_docsis_tlv_rcc_ven_spec; */

/* static int hf_docsis_tlv_rcc_err; */

static int hf_docsis_tlv_rcc_err_mod_or_ch;

static int hf_docsis_tlv_rcc_err_idx;

static int hf_docsis_tlv_rcc_err_param;

static int hf_docsis_tlv_rcc_err_code;

static int hf_docsis_tlv_rcc_err_msg;

static int hf_docsis_tlv_dsid_id;

static int hf_docsis_tlv_dsid_action;

/* static int hf_docsis_tlv_dsid_ds_reseq; */

/* static int hf_docsis_tlv_dsid_mc; */

static int hf_docsis_ds_reseq_dsid;

static int hf_docsis_ds_reseq_ch_lst;

static int hf_docsis_ds_reseq_wait_time;

static int hf_docsis_ds_reseq_warn_thresh;

static int hf_docsis_ds_reseq_ho_timer;

/* static int hf_docsis_tlv_dsid_mc_addr; */

static int hf_docsis_tlv_dsid_mc_cmim;

static int hf_docsis_tlv_dsid_mc_group;

/* static int hf_docsis_tlv_dsid_mc_phs; */

static int hf_docsis_mc_addr_action;

static int hf_docsis_mc_addr_addr;

static int hf_docsis_tlv_sec_assoc_action;

static int hf_docsis_tlv_sec_assoc_desc;

static int hf_docsis_ch_asgn_us_ch_id;

static int hf_docsis_ch_asgn_rx_freq;

static int hf_docsis_cmts_mc_sess_enc_grp;

static int hf_docsis_cmts_mc_sess_enc_src;

static int hf_docsis_cmts_mc_sess_enc_cmim;

static int hf_docsis_tlv_em_mode_ind;

static int hf_docsis_tlv_em_id_list_for_cm_em_id;

static int hf_docsis_tlv_fdx_reset;

static int hf_docsis_tlv_fdx_tg_assignment_tg_id;

static int hf_docsis_tlv_fdx_tg_assignment_rba_type;

static int hf_docsis_tlv_unknown;

static int hf_docsis_tlv_unknown_type;

static int hf_docsis_tlv_unknown_length;

static int hf_docsis_tlv_unknown_value;

static int hf_docsis_ucd_fragments;

static int hf_docsis_ucd_fragment;

static int hf_docsis_ucd_fragment_overlap;

static int hf_docsis_ucd_fragment_overlap_conflict;

static int hf_docsis_ucd_fragment_multiple_tails;

static int hf_docsis_ucd_fragment_too_long_fragment;

static int hf_docsis_ucd_fragment_error;

static int hf_docsis_ucd_fragment_count;

static int hf_docsis_ucd_reassembled_in;

static int hf_docsis_ucd_reassembled_length;

static int hf_docsis_ucd_reassembled_data;

static int hf_docsis_ucd_reassembled;

/* Initialize the subtree pointers */

static int ett_docsis_tlv;

static int ett_docsis_tlv_cos;

static int ett_docsis_tlv_mcap;

static int ett_docsis_tlv_mcap_em;

static int ett_docsis_tlv_mcap_em_pref;

static int ett_docsis_tlv_mcap_ofdm_chan_subc_qam_mod_sup;

static int ett_docsis_tlv_mcap_ofdma_chan_subc_qam_mod_sup;

static int ett_docsis_tlv_mcap_down_lower_band_edge_conf;

static int ett_docsis_tlv_mcap_down_upper_band_edge_conf;

static int ett_docsis_tlv_mcap_dipl_down_lower_band_edge;

static int ett_docsis_tlv_mcap_dipl_down_upper_band_edge;

static int ett_docsis_tlv_mcap_dipl_up_upper_band_edge;

static int ett_docsis_tlv_mcap_advanced_band_plan;

static int ett_docsis_tlv_mcap_dipl_down_lower_band_edge_options_list;

static int ett_docsis_tlv_mcap_dipl_down_upper_band_edge_options_list;

static int ett_docsis_tlv_mcap_dipl_up_upper_band_edge_options_list;

static int ett_docsis_tlv_clsfr;

static int ett_docsis_tlv_clsfr_ip;

static int ett_docsis_tlv_clsfr_ip6;

static int ett_docsis_tlv_clsfr_ip6_tc;

static int ett_docsis_tlv_clsfr_eth;

static int ett_docsis_tlv_clsfr_err;

static int ett_docsis_tlv_phs;

static int ett_docsis_tlv_phs_err;

static int ett_docsis_tlv_clsfr_dot1q;

static int ett_docsis_tlv_reqxmitpol;

static int ett_docsis_tlv_sflow_err;

static int ett_docsis_tlv_svc_unavail;

static int ett_docsis_tlv_snmpv3_kick;

static int ett_docsis_tlv_ds_ch_list;

static int ett_docsis_tlv_ds_ch_list_single;

static int ett_docsis_tlv_ds_ch_list_range;

static int ett_docsis_tlv_ext_field;

static int ett_docsis_tlv_vendor_specific_cap;

static int ett_docsis_tlv_dut_filter;

static int ett_docsis_tlv_tcc;

static int ett_docsis_tlv_tcc_ucd;

static int ett_docsis_tlv_tcc_rng_parms;

static int ett_docsis_tlv_tcc_oudp;

static int ett_docsis_tlv_tcc_err;

static int ett_docsis_tlv_sid_cl;

static int ett_docsis_tlv_sid_cl_enc;

static int ett_docsis_tlv_sid_cl_enc_map;

static int ett_docsis_tlv_sid_cl_so;

static int ett_docsis_tlv_rcp;

static int ett_docsis_tlv_rcp_rcv_mod_enc;

static int ett_docsis_tlv_rcp_ch_bl_rng;

static int ett_docsis_tlv_rcp_rcv_ch;

static int ett_docsis_tlv_rcc;

static int ett_docsis_tlv_rcc_rcv_mod_enc;

static int ett_docsis_tlv_rcc_rcv_ch;

static int ett_docsis_tlv_rcc_partial_serv_down_chan;

static int ett_docsis_tlv_rcc_srcc;

static int ett_docsis_tlv_rcc_srcc_prim_ds_assign;

static int ett_docsis_tlv_rcc_srcc_ds_assign;

static int ett_docsis_tlv_rcc_srcc_ds_prof_assign;

static int ett_docsis_tlv_rcc_srcc_ds_prof_assign_prof_list;

static int ett_docsis_tlv_rcc_err;

static int ett_docsis_tlv_dsid;

static int ett_docsis_tlv_dsid_ds_reseq;

static int ett_docsis_tlv_dsid_mc;

static int ett_docsis_tlv_dsid_mc_addr;

static int ett_docsis_tlv_sec_assoc;

static int ett_docsis_tlv_ch_asgn;

static int ett_docsis_cmts_mc_sess_enc;

static int ett_docsis_em_id_list_for_cm;

static int ett_docsis_tlv_tg_assignment;

static int ett_docsis_tlv_unknown;

static int ett_docsis_ucd_fragments;

static int ett_docsis_ucd_fragment;

static int ett_docsis_ucd_reassembled;

static expert_field ei_docsis_tlv_tlvlen_bad;

static expert_field ei_docsis_tlv_tlvval_bad;

static const true_false_string ena_dis_tfs = {

  "Enable",

  "Disable"

};

static const value_string sup_unsup_vals[] = {

  {0, "Unsupported"},

  {1, "Supported"},

  {0, NULL},

};

static const true_false_string sup_unsup_tfs = {

  "Supported",

  "Unsupported"

};

static const value_string docs_ver_vals[] = {

  {0, "v1.0"},

  {1, "v1.1"},

  {2, "v2.0"},

  {3, "v3.0"},

  {4, "v3.1"},

  {5, "v4.0"},

  {0, NULL},

};

static const value_string dsc_act_vals[] = {

  {0, "DSC Add Classifier"},

  {1, "DSC Replace Classifier"},

  {2, "DSC Delete Classifier"},

  {0, NULL},

};

static const value_string qos_param_vals[] = {

  {0x01, "Apply to provisioned set only"},

  {0x02, "Perform admission control add apply to admitted set"},

  {0x03, "Apply to provisioned and admitted set; Perform admission control"},

  {0x04, "Perform admission control if needed and apply to active set"},

  {0x05,

   "Apply to provisioned and active sets; Admission control on admitted set in separate service flow, and activate service flow"},

  {0x06,

   "Perform admission control and activate; Apply to admitted and active sets"},

  {0x07,

   "Apply to Provisioned, Active and Admitted Sets; Admission Control and Activate Service Flow"},

  {0, NULL},

};

static const value_string sched_type_vals[] = {

  {0, "Reserved"},

  {1, "Undefined (CMTS Dependent)"},

  {2, "Best Effort Service"},

  {3, "Non-Real-Time Polling Service"},

  {4, "Real-Time Polling Service"},

  {5, "Unsolicited Grant Service w/Activity Detection"},

  {6, "Unsolicited Grant Service"},

  {0, NULL},

};

static const value_string action_vals[] = {

  {0, "Add PHS Rule"},

  {1, "Set PHS Rule"},

  {2, "Delete PHS Rule"},

  {3, "Delete all PHS Rules"},

  {0, NULL},

};

static const value_string dbc_action_vals[] = {

  {0, "Add PHS Rule"},

  {1, "Delete PHS Rule"},

  {0, NULL},

};

#if 0

static const true_false_string verify_tfs = {

  "Don't Verify",

  "Verify"

};

#endif

static const value_string rng_tech_vals[] = {

  {0, "Perform initial maintenance on new channel"},

  {1, "Perform only station maintenance on new channel"},

  {2, "Perform either initial maintenance or station maintenance on new channel"},

  {3, "Use the new channel directly without performing initial or station maintenance"},

  {0, NULL},

};

static const value_string docsis_conf_code[] = {

  {  0, "okay/success"},

  {  1, "Reject: Other/Auth failure (1.0)"},

  {  2, "Reject: Unrecognized configuration setting/COS failure (1.0)"},

  {  3, "Reject: Temporary/Reject resource"},

  {  4, "Reject: Permanent/Reject admin"},

  {  5, "Reject: Not owner"},

  {  6, "Reject: Service flow not found"},

  {  7, "Reject: Service flow exists"},

  {  8, "Reject: Required parameter not present"},

  {  9, "Reject: Header suppression"},

  { 10, "Reject: Unknown transaction ID"},

  { 11, "Reject: Authentication failure"},

  { 12, "Reject: Add aborted"},

  { 13, "Reject: Multiple errors"},

  { 14, "Reject: Classifier not found"},

  { 15, "Reject: Classifier exists"},

  { 16, "Reject: PHS rule not found"},

  { 17, "Reject: PHS rule exists"},

  { 18, "Reject: Duplicate reference ID or index in message"},

  { 19, "Reject: Multiple upstream service flows"},

  { 20, "Reject: Multiple downstream service flows"},

  { 21, "Reject: Classifier for another service flow"},

  { 22, "Reject: PHS for another service flow"},

  { 23, "Reject: Parameter invalid for context"},

  { 24, "Reject: Authorization failure"},

  { 25, "Reject: Temporary DCC"},

  { 26, "Reject: Downstream Inconsistency"},

  { 27, "Reject: Upstream Inconsistency"},

  { 28, "Reject: Insufficient SID Cluster Resources"},

  { 29, "Reject: Missing RCP"},

  { 30, "Partial Service"},

  { 31, "Reject: Temporary DBC"},

  { 32, "Reject: Unknown DSID"},

  { 33, "Reject: Unknown SID Cluster"},

  { 34, "Reject: Invalid Initialization Technique"},

  { 35, "Reject: No Change"},

  { 36, "Reject: Invalid DBC Request"},

  { 37, "Reject: Mode Switch"},

  { 38, "Reject: Insufficient Transmitters"},

  { 40, "Reject: Insufficient DSID Resources"},

  { 41, "Reject: Invalid DSID Encoding"},

  { 42, "Reject: Unknown Client MAC Address"},

  { 43, "Reject: Unknown SAID"},

  { 44, "Reject: Insufficient SA Resources"},

  { 45, "Reject: Invalid SA Encoding"},

  { 46, "Reject: Invalid SA Crypto Suite"},

  { 47, "Reject: TEK Exists"},

  { 48, "Reject: Invalid SID Cluster Encoding"},

  { 49, "Reject: Insufficient SID Resources"},

  { 50, "Reject: Unsupported Parameter Change"},

  { 51, "Reject: PHS Rule Fully Defined"},

  { 52, "Reject: No MAPs Or UCDs"},

  { 53, "Error: T3 Retries Exceeded"},

  { 54, "Error: T2 Timeout"},

  { 55, "Error: T4 Timeout"},

  { 56, "Error: Ranging Abort"},

  { 57, "Error: Initialization Channel Timeout"},

  { 58, "Error: DBC-REQ Incomplete"},

  { 59, "Reject: Too Many OFDMA Profiles"},

  { 60, "Reject: Too Many OFDM Profiles"},

  { 61, "Reject: EM Incorrect Primary DS"},

  { 62, "Reject: AQM Not Supported"},

  { 63, "Reject: Invalid DPD"},

  {100, "Reject: VLAD ID In Use"},

  {101, "Reject: Multipoint L2VPN"},

  {102, "Reject: Multipoint NSI"},

  {160, "Reject: Unknown RCP ID"},

  {161, "Reject: Multiple RCP IDs"},

  {162, "Reject: Missing Receive Module Index"},

  {163, "Reject: Invalid Receive Module Index"},

  {164, "Reject: Invalid Receive Channel Center Frequency"},

  {165, "Reject: Invalid Receive Module First Channel Center Frequency"},

  {166, "Reject: Missing Receive Module First Channel Center Frequency"},

  {167, "Reject: No Primary Downstream Channel Assigned"},

  {168, "Reject: Multiple Primary Downstream Channel Assigned"},

  {169, "Reject: Receive Module Connectivity Error"},

  {170, "Reject: Invalid Receive Channel Index"},

  {171, "Reject: Center Frequency Not Multiple of 62500 Hz"},

  {180, "Depart"},

  {181, "Arrive"},

  {182, "Reject: Already There"},

  {183, "Reject: Reject 2.0 Disable"},

  {200, "Reject: Major Service Flow Error"},

  {201, "Reject: Major Classifier Error"},

  {202, "Reject: Major PHS Rule Error"},

  {203, "Reject: Multiple Major Errors"},

  {204, "Reject: Message Syntax Error"},

  {205, "Reject: Primary Service Flow Error"},

  {206, "Reject: Message Too Big"},

  {207, "Reject: Invalid Modem Capabilities"},

  {208, "Reject: Bad RCC"},

  {209, "Reject: Bad TCC"},

  {210, "Reject: Dynamic Range Window Violation"},

  {211, "Reject: Unable to support Queue Depth"},

  {212, "Reject: Energy Management Parameters"},

  {213, "Reject: Invalid Backup Primary Downstream"},

  {0, NULL}

};

value_string_ext docsis_conf_code_ext = VALUE_STRING_EXT_INIT(docsis_conf_code);

static const value_string next_header_vals[] = {

  {0, "Hop-by-Hop"},

  {60, "Destination"},

  {43, "Routing"},

  {44, "Fragment"},

  {51, "Authentication"},

  {50, "Encapsulation"},

  {59, "No"},

  {256, "All IPv6 Traffic"},

  {257, "All UDP and TCP Traffic"},

  {0, NULL},

};

static const value_string us_ch_action_vals[] = {

  {0, "No Action"},

  {1, "Add"},

  {2, "Change"},

  {3, "Delete"},

  {4, "Replace"},

  {5, "Re-range"},

  {0, NULL},

};

static const value_string init_tech_vals[] = {

  {0, "reserved"},

  {1, "Perform broadcast initial ranging before normal ops"},

  {2, "Perform unicast ranging before normal ops"},

  {3, "Perform either broadcast or unicast ranging before normal ops"},

  {4, "Use new channel directly without reinitializing or ranging"},

  {5, "Perform probing before normal ops"},

  {6, "Perform unicast initial ranging before normal ops"},

  {7, "Perform station ranging before normal ops"},

  {8, "Use FDX channel directly"},

  {0, NULL},

};

static const value_string sid_ch_map_vals[] = {

  {0, "reserved"},

  {1, "Add"},

  {2, "Delete"},

  {0, NULL},

};

static const value_string mod_or_ch_vals[] = {

  {0, "reserved"},

  {1, "reserved"},

  {2, "reserved"},

  {3, "reserved"},

  {4, "Receive Module"},

  {5, "Receive Channel"},

  {0, NULL},

};

static const value_string dsid_action_vals[] = {

  {0, "Add"},

  {1, "Change"},

  {2, "Delete"},

  {0, NULL},

};

static const value_string add_del_vals[] = {

  {0, "Add"},

  {1, "Delete"},

  {0, NULL},

};

static const value_string init_reason_vals[] = {

  { 0, "reserved"},

  { 1, "Power On"},

  { 2, "T17 Lost Sync"},

  { 3, "All Upstream Failed"},

  { 4, "Bad DHCP Ack"},

  { 5, "Link Local Address in use"},

  { 6, "T6 Expired"},

  { 7, "REG-RSP not ok"},

  { 8, "BAD RCC/TCC"},

  { 9, "Failed Primary Downstream"},

  {10, "TCS failed on all upstreams"},

  {11, "reserved"},

  {12, "reserved"},

  {13, "reserved"},

  {14, "reserved"},

  {15, "MTCM Change"},

  {16, "T4 Expired"},

  {17, "No Primary SF on US Channel"},

  {18, "CM Control Init"},

  {19, "Dynamic Range Window Violation"},

  {20, "IP Provisioning Mode Override"},

  {21, "SW Upgrade Reboot"},

  {22, "SNMP Reset"},

  {23, "REG-RSP Missing RCC"},

  {24, "REG-RSP Missing TCC"},

  {25, "REG-RSP MTC Not Enabled"},

  {26, "DHCPv6 Bad Reply"},

  {27, "Reset Due To Diplexer Change"},

  {0, NULL},

};

static const value_string docsis_freq_rng_vals[] = {

  {0, "Standard Upstream Frequency Range (5-42 MHz)"},

  {1, "Selectable Between Standard (5-42 MHz) and Extended (5-85 MHz) Upstream Frequency Range"},

  {2, "Extended Upstream Frequency Range (5-85 MHz)"},

  {0, NULL},

};

static const value_string mc_dsid_fwd_vals[] = {

  {0, "No support for multicast DSID forwarding"},

  {1, "Support for GMAC explicit multicast DSID forwarding"},

  {2, "Support for GMAC promiscuous multicast DSID forwarding"},

  {0, NULL},

};

static const value_string fctype_fwd_vals[] = {

  {0, "Isolation Packet PDU Header (FC_Type of 10) is not forwarded"},

  {1, "Isolation Packet PDU Header (FC_Type of 10) is forwarded"},

  {0, NULL},

};

static const value_string em_mode_ind_vals[] = {

  {0, "Do not operate in any Energy Management Mode"},

  {1, "Operate in Energy Management 1x1 Mode"},

  {2, "Operate in DOCSIS Light Sleep (DLS) Mode"},

  {0, NULL},

};

static const value_string down_reseq_vals[] = {

  {0, "The CMTS is required to associate this service flow with a resequencing DSID if the service flow is assigned to a downstream bonding group."},

  {1, "The CMTS is required to not associate this service flow with a resequencing DSID."},

  {0, NULL},

};

static const value_string dipl_up_upper_band_edge_conf_vals[] = {

  {0, "Upstream Frequency Range up to 42 MHz"},

  {1, "Upstream Frequency Range up to 65 MHz"},

  {2, "Upstream Frequency Range up to 85 MHz"},

  {3, "Upstream Frequency Range up to 117 MHz"},

  {4, "Upstream Frequency Range up to 204 MHz"},

  {0, NULL},

};

static const value_string docsis_time_prot_mode_vals[] = {

  {0, "DTP operation is not supported"},

  {1, "DTP Slave capable only"},

  {2, "DTP Master capable only"},

  {3, "DTP Master or Slave capable"},

  {0, NULL},

};

static const value_string docsis_time_prot_perf_sup_vals[] = {

  {0, "DTP mode is not supported"},

  {1, "DTP support for DTP Level 1"},

  {2, "DTP support for DTP Level 2"},

  {3, "DTP support for DTP Level 3"},

  {4, "DTP support for DTP Level 4"},

  {5, "DTP support for DTP Level 5"},

  {6, "DTP supported but with no specified performance"},

  {0, NULL},

};

static const value_string rba_type_vals[] = {

  {0, "Use RBA-SW"},

  {1, "Use RBA-HW"},

  {0, NULL},

};

static const value_string fdx_reset_vals[] = {

  {0, "Do not reset FDX state"},

  {1, "Reset FDX state and restart FDX initialization"},

  {0, NULL},

};

static const value_string docsis_mcap_ext_sf_cluster_assign_sup_vals[] = {

  {0, "No support"},

  {1, "Support available"},

  {0, NULL},

};

static const value_string extended_power_options_vals[] = {

  {0, "No battery backup"},

  {1, "Battery backup"},

  {2, "Modem capacitance"},

  {0, NULL},

};

static void

fourth_db(char *buf, uint32_t value)

{

    snprintf(buf, ITEM_LABEL_LENGTH, "%.2f dB", value/4.0);

}

static void

fourth_dbmv(char *buf, uint32_t value)

{

    snprintf(buf, ITEM_LABEL_LENGTH, "%.2f dBmV", value/4.0);

}

static reassembly_table ucd_reassembly_table;

static const fragment_items ucd_frag_items = {

  &ett_docsis_ucd_fragment,

  &ett_docsis_ucd_fragments,

  &hf_docsis_ucd_fragments,

  &hf_docsis_ucd_fragment,

  &hf_docsis_ucd_fragment_overlap,

  &hf_docsis_ucd_fragment_overlap_conflict,

  &hf_docsis_ucd_fragment_multiple_tails,

  &hf_docsis_ucd_fragment_too_long_fragment,

  &hf_docsis_ucd_fragment_error,

  &hf_docsis_ucd_fragment_count,

  &hf_docsis_ucd_reassembled_in,

  &hf_docsis_ucd_reassembled_length,

  &hf_docsis_ucd_reassembled_data,

  "UCD fragments"

};

/* Dissection */

static void

dissect_unknown_tlv(tvbuff_t * tvb, packet_info *pinfo, proto_tree * tree, int start, uint16_t len) {

  unsigned type, length;

  proto_tree * unknown_tree;

  proto_item * unknown_item;

  unknown_item = proto_tree_add_item(tree, hf_docsis_tlv_unknown, tvb, start, len, ENC_NA);

  unknown_tree = proto_item_add_subtree(unknown_item, ett_docsis_tlv_unknown);

  if (len < 2)

    {

      expert_add_info_format(pinfo, unknown_item, &ei_docsis_tlv_tlvlen_bad, "Unknown TLV: total length < 2: %u", len);

      return;

    }

  proto_tree_add_item_ret_uint (unknown_tree, hf_docsis_tlv_unknown_type, tvb, start, 1, ENC_BIG_ENDIAN, &type);

  proto_tree_add_item_ret_uint (unknown_tree, hf_docsis_tlv_unknown_length, tvb, start + 1, 1, ENC_BIG_ENDIAN, &length);

  proto_item_append_text(unknown_item," (Type: %d, Length: %d)", type, length);

  if (length + 2 != len)

    {

      expert_add_info_format(pinfo, unknown_item, &ei_docsis_tlv_tlvlen_bad, "Unknown TLV: Wrong TLV length: %u", length);

      return;

    }

  proto_tree_add_item (unknown_tree, hf_docsis_tlv_unknown_value, tvb, start + 2, len - 2, ENC_NA);

}

static void

dissect_phs_err (tvbuff_t * tvb, packet_info *pinfo, proto_tree * tree, int start, uint16_t len)

{

  uint8_t type, length;

  proto_tree *err_tree;

  proto_item *err_item;

  int pos = start;

  err_tree =

    proto_tree_add_subtree_format(tree, tvb, start, len, ett_docsis_tlv_sflow_err, &err_item,

                                  "5 Service Flow Error Encodings (Length = %u)", len);

  while (pos < (start + len))

    {

      type = tvb_get_uint8 (tvb, pos++);

      length = tvb_get_uint8 (tvb, pos++);

      switch (type)

        {

          case PHS_ERR_PARAM:

            if (length == 1)

              {

                proto_tree_add_item (err_tree, hf_docsis_tlv_phs_err_param, tvb,

                                     pos, length, ENC_BIG_ENDIAN);

              }

            else

              {

                expert_add_info_format(pinfo, err_item, &ei_docsis_tlv_tlvlen_bad, "Wrong TLV length: %u", length);

              }

            break;

          case PHS_ERR_CODE:

            if (length == 1)

              {

                proto_tree_add_item (err_tree, hf_docsis_tlv_phs_err_code, tvb,

                                     pos, length, ENC_BIG_ENDIAN);

              }

            else

              {

                expert_add_info_format(pinfo, err_item, &ei_docsis_tlv_tlvlen_bad, "Wrong TLV length: %u", length);

              }

            break;

          case PHS_ERR_MSG:

            proto_tree_add_item (err_tree, hf_docsis_tlv_phs_err_msg, tvb, pos,

                                 length, ENC_ASCII);

            break;

          default:

            dissect_unknown_tlv (tvb, pinfo, err_tree, pos - 2, length + 2);

            break;

        }                       /* switch */

      pos = pos + length;

    }                           /* while */

}

static void

dissect_phs (tvbuff_t * tvb, packet_info *pinfo, proto_tree * tree, int start, uint16_t len)

{

  uint8_t type, length;

  proto_tree *phs_tree;

  proto_item *phs_item;

  int pos = start;

  phs_tree =

    proto_tree_add_subtree_format(tree, tvb, start, len, ett_docsis_tlv_phs, &phs_item,

                                  "26 PHS Encodings (Length = %u)", len);

  while (pos < (start + len))

    {

      type = tvb_get_uint8 (tvb, pos++);

      length = tvb_get_uint8 (tvb, pos++);

      switch (type)