/* Decode PMC-RSP messages. */
void dissect_mac_mgmt_msg_pmc_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
guint offset = 0;
guint tvb_len, payload_type;
proto_item *pmc_rsp_item = NULL;
proto_tree *pmc_rsp_tree = NULL;
guint8 pwr_control_mode;
gint8 value;
gfloat power_change;
UNREFERENCED_PARAMETER(pinfo);
/* Ensure the right payload type */
payload_type = tvb_get_guint8(tvb, 0);
if(payload_type != MAC_MGMT_MSG_PMC_RSP)
{
return;
}
if (tree)
{ /* we are being asked for details */
/* Get the tvb reported length */
tvb_len = tvb_reported_length(tvb);
/* display MAC payload type PMC-RSP */
pmc_rsp_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_pmc_rsp_decoder, tvb, 0, tvb_len, "MAC Management Message, PMC-RSP (64)");
/* add MAC PMC RSP subtree */
pmc_rsp_tree = proto_item_add_subtree(pmc_rsp_item, ett_mac_mgmt_msg_pmc_decoder);
/* display the Message Type */
proto_tree_add_item(pmc_rsp_tree, hf_pmc_rsp_message_type, tvb, offset, 1, FALSE);
offset ++;
/* display the Power Control Mode Change */
if (include_cor2_changes)
proto_tree_add_item(pmc_rsp_tree, hf_pmc_req_pwr_control_mode_change_cor2, tvb, offset, 2, FALSE);
else
proto_tree_add_item(pmc_rsp_tree, hf_pmc_req_pwr_control_mode_change, tvb, offset, 2, FALSE);
/* display the Power Adjust start frame */
proto_tree_add_item(pmc_rsp_tree, hf_pmc_rsp_start_frame, tvb, offset, 2, FALSE);
pwr_control_mode = 0xC0 & tvb_get_guint8(tvb, offset);
offset++;
value = (gint8)tvb_get_guint8(tvb, offset);
power_change = (float)0.25 * value; /* 0.25dB incr */
/* Check if Power Control Mode is 0 */
if (pwr_control_mode == 0) {
/* display the amount of power change requested */
proto_tree_add_float_format_value(pmc_rsp_tree, hf_pmc_rsp_power_adjust, tvb, offset, 1, power_change, " %.2f dB", power_change);
} else {
/* display the amount of MS power change requested */
proto_tree_add_float_format_value(pmc_rsp_tree, hf_pmc_rsp_offset_BS_per_MS, tvb, offset, 1, power_change, " %.2f dB", power_change);
}
}
}
/* Decode RNG-RSP messages. */
void dissect_mac_mgmt_msg_rng_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_item *ranging_status_item = NULL;
proto_item *dl_freq_override_item = NULL;
proto_item *ss_mac_address_item = NULL;
proto_item *frame_number_item = NULL;
proto_item *opportunity_number_item = NULL;
guint offset = 0;
guint tlv_offset;
guint tvb_len, payload_type;
proto_item *rng_rsp_item = NULL;
proto_item *tlv_item = NULL;
proto_tree *rng_rsp_tree = NULL;
proto_tree *sub_tree = NULL;
proto_tree *tlv_tree = NULL;
tlv_info_t tlv_info;
gint tlv_type;
guint tlv_len;
guint this_offset = 0;
tlv_info_t sub_tlv_info;
gint sub_tlv_type;
gint sub_tlv_len;
guint sub_tlv_offset;
float timing_adjust;
float power_level_adjust;
gint offset_freq_adjust;
/* Ensure the right payload type */
payload_type = tvb_get_guint8(tvb, offset);
if(payload_type != MAC_MGMT_MSG_RNG_RSP)
{
return;
}
if (tree)
{ /* we are being asked for details */
/* Get the tvb reported length */
tvb_len = tvb_reported_length(tvb);
/* display MAC payload type RNG-RSP */
rng_rsp_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_rng_rsp_decoder, tvb, offset, tvb_len, "MAC Management Message, RNG-RSP (5)");
/* add MAC RNG-RSP subtree */
rng_rsp_tree = proto_item_add_subtree(rng_rsp_item, ett_mac_mgmt_msg_rng_rsp_decoder);
/* display the Message Type */
proto_tree_add_item(rng_rsp_tree, hf_rng_rsp_message_type, tvb, offset, 1, FALSE);
proto_tree_add_item(rng_rsp_tree, hf_rng_req_reserved, tvb, 1, 1, FALSE);
offset += 2;
while(offset < tvb_len)
{
/* Get the TLV data. */
init_tlv_info(&tlv_info, tvb, offset);
/* get the TLV type */
tlv_type = get_tlv_type(&tlv_info);
/* get the TLV length */
tlv_len = get_tlv_length(&tlv_info);
if(tlv_type == -1 || tlv_len > MAX_TLV_LEN || tlv_len < 1)
{ /* invalid tlv info */
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "RNG-RSP TLV error");
proto_tree_add_item(rng_rsp_tree, hf_rng_invalid_tlv, tvb, offset, (tvb_len - offset), FALSE);
break;
}
/* get the offset to the TLV data */
tlv_offset = offset + get_tlv_value_offset(&tlv_info);
switch (tlv_type) {
case RNG_RSP_TIMING_ADJUST: {
sub_tree = add_protocol_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, proto_mac_mgmt_msg_rng_rsp_decoder, tvb, tlv_offset, tlv_len, "Timing Adjust (%u byte(s))", tlv_len);
timing_adjust = (float)(gint32)tvb_get_ntohl(tvb, tlv_offset) / 4;
tlv_item = proto_tree_add_float_format_value(sub_tree, hf_rng_rsp_timing_adjust, tvb,
tlv_offset, 4, timing_adjust, " %.2f modulation symbols", timing_adjust);
if ((timing_adjust < -2) || (timing_adjust > 2))
proto_item_append_text(tlv_item, " (during periodic ranging shall not exceed +- 2)");
break;
}
case RNG_RSP_POWER_LEVEL_ADJUST: {
sub_tree = add_protocol_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, proto_mac_mgmt_msg_rng_rsp_decoder, tvb, tlv_offset, tlv_len, "Power Level Adjust (%u byte(s))", tlv_len);
power_level_adjust = (float)(gint8)tvb_get_guint8(tvb, tlv_offset) / 4;
proto_tree_add_float_format_value(sub_tree, hf_rng_rsp_power_level_adjust, tvb, tlv_offset, 1,
power_level_adjust, " %.2f dB", power_level_adjust);
break;
}
case RNG_RSP_OFFSET_FREQ_ADJUST: {
sub_tree = add_protocol_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, proto_mac_mgmt_msg_rng_rsp_decoder, tvb, tlv_offset, tlv_len, "Offset Frequency Adjust (%u byte(s))", tlv_len);
offset_freq_adjust = tvb_get_ntohl(tvb, tlv_offset);
proto_tree_add_int_format_value(sub_tree, hf_rng_rsp_offset_freq_adjust, tvb, tlv_offset, 4,
offset_freq_adjust, " %d Hz", offset_freq_adjust);
break;
}
case RNG_RSP_RANGING_STATUS:
sub_tree = add_tlv_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, hf_rng_rsp_ranging_status, tvb, tlv_offset, 1, FALSE);
ranging_status_item = proto_tree_add_item(sub_tree, hf_rng_rsp_ranging_status, tvb, tlv_offset, 1, FALSE);
break;
case RNG_RSP_DL_FREQ_OVERRIDE: {
sub_tree = add_tlv_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, hf_rng_rsp_dl_freq_override, tvb, tlv_offset, 4, FALSE);
dl_freq_override_item = proto_tree_add_item(sub_tree, hf_rng_rsp_dl_freq_override, tvb, tlv_offset, 4, FALSE);
proto_item_append_text(dl_freq_override_item, " kHz");
break;
}
case RNG_RSP_UL_CHANNEL_ID_OVERRIDE:
sub_tree = add_tlv_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, hf_rng_rsp_ul_chan_id_override, tvb, tlv_offset, 1, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_ul_chan_id_override, tvb, tlv_offset, 1, FALSE);
break;
case RNG_RSP_DL_OPERATIONAL_BURST_PROFILE:
sub_tree = add_tlv_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, hf_rng_rsp_dl_operational_burst_profile, tvb, tlv_offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_dl_operational_burst_profile_diuc, tvb, tlv_offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_dl_operational_burst_profile_ccc, tvb, tlv_offset, 2, FALSE);
break;
case RNG_RSP_SS_MAC_ADDRESS:
if (tlv_len == 6)
{
sub_tree = add_tlv_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, hf_rng_rsp_ss_mac_address, tvb, tlv_offset, 6, FALSE);
ss_mac_address_item = proto_tree_add_item(sub_tree, hf_rng_rsp_ss_mac_address, tvb, tlv_offset, 6, FALSE);
} else {
sub_tree = add_tlv_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, hf_rng_invalid_tlv, tvb, tlv_offset, tlv_len, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_ss_mac_address, tvb, tlv_offset, 6, FALSE);
}
break;
case RNG_RSP_BASIC_CID:
sub_tree = add_tlv_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, hf_rng_rsp_basic_cid, tvb, tlv_offset, 1, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_basic_cid, tvb, tlv_offset, 2, FALSE);
break;
case RNG_RSP_PRIMARY_MGMT_CID:
sub_tree = add_tlv_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, hf_rng_rsp_primary_mgmt_cid, tvb, tlv_offset, 1, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_primary_mgmt_cid, tvb, tlv_offset, 2, FALSE);
break;
case RNG_RSP_AAS_BROADCAST_PERMISSION:
sub_tree = add_tlv_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, hf_rng_rsp_broadcast, tvb, tlv_offset, 1, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_broadcast, tvb, tlv_offset, 1, FALSE);
break;
case RNG_RSP_FRAME_NUMBER:
sub_tree = add_tlv_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, hf_rng_rsp_frame_number, tvb, tlv_offset, 3, FALSE);
frame_number_item = proto_tree_add_item(sub_tree, hf_rng_rsp_frame_number, tvb, tlv_offset, 3, FALSE);
break;
case RNG_RSP_OPPORTUNITY_NUMBER:
sub_tree = add_tlv_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, hf_rng_rsp_opportunity_number, tvb, tlv_offset, 1, FALSE);
opportunity_number_item = proto_tree_add_item(sub_tree, hf_rng_rsp_opportunity_number, tvb, tlv_offset, 1, FALSE);
if (tvb_get_ntohl(tvb, tlv_offset) == 0)
proto_item_append_text(opportunity_number_item, " (may not be 0!)");
break;
case RNG_RSP_SERVICE_LEVEL_PREDICTION:
sub_tree = add_tlv_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, hf_rng_rsp_service_level_prediction, tvb, tlv_offset, 1, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_service_level_prediction, tvb, tlv_offset, 1, FALSE);
break;
case RNG_RSP_RESOURCE_RETAIN_FLAG:
sub_tree = add_tlv_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, hf_rng_rsp_resource_retain_flag, tvb, tlv_offset, 1, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_resource_retain_flag, tvb, tlv_offset, 1, FALSE);
break;
case RNG_RSP_HO_PROCESS_OPTIMIZATION:
sub_tree = add_tlv_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, hf_rng_rsp_ho_process_optimization, tvb, tlv_offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_ho_process_optimization_0, tvb, tlv_offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_ho_process_optimization_1_2, tvb, tlv_offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_ho_process_optimization_3, tvb, tlv_offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_ho_process_optimization_4, tvb, tlv_offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_ho_process_optimization_5, tvb, tlv_offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_ho_process_optimization_6, tvb, tlv_offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_ho_process_optimization_7, tvb, tlv_offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_ho_process_optimization_8, tvb, tlv_offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_ho_process_optimization_9, tvb, tlv_offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_ho_process_optimization_10, tvb, tlv_offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_ho_process_optimization_11, tvb, tlv_offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_ho_process_optimization_12, tvb, tlv_offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_ho_process_optimization_13, tvb, tlv_offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_ho_process_optimization_14, tvb, tlv_offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_ho_process_optimization_15, tvb, tlv_offset, 2, FALSE);
break;
case RNG_RSP_SBC_RSP_ENCODINGS:
sub_tree = add_protocol_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, proto_mac_mgmt_msg_rng_rsp_decoder, tvb, tlv_offset, tlv_len, "SBC-RSP Encodings (%u byte(s))", tlv_len);
dissect_mac_mgmt_msg_sbc_rsp_decoder(tvb_new_subset(tvb, tlv_offset, tlv_len, tlv_len), pinfo, sub_tree);
break;
case RNG_RSP_REG_RSP_ENCODINGS:
sub_tree = add_protocol_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, proto_mac_mgmt_msg_rng_rsp_decoder, tvb, tlv_offset, tlv_len, "REG-RSP Encodings (%u byte(s))", tlv_len);
dissect_mac_mgmt_msg_reg_rsp_decoder(tvb_new_subset(tvb, tlv_offset, tlv_len, tlv_len), pinfo, sub_tree);
break;
/* Implemented message encoding 33 (Table 367 in IEEE 802.16e-2007) */
case RNG_RSP_DL_OP_BURST_PROFILE_OFDMA:
sub_tree = add_tlv_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, hf_rng_rsp_dl_op_burst_profile_ofdma, tvb, tlv_offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_least_robust_diuc, tvb, tlv_offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_repetition_coding_indication, tvb, tlv_offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_config_change_count_of_dcd, tvb, tlv_offset, 2, FALSE);
break;
case RNG_RSP_HO_ID:
sub_tree = add_tlv_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, hf_rng_rsp_ho_id, tvb, tlv_offset, 1, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_ho_id, tvb, tlv_offset, 1, FALSE);
break;
case RNG_RSP_LOCATION_UPDATE_RESPONSE:
sub_tree = add_tlv_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, hf_rng_rsp_location_update_response, tvb, tlv_offset, 1, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_location_update_response, tvb, tlv_offset, 1, FALSE);
break;
case RNG_RSP_PAGING_INFORMATION:
sub_tree = add_tlv_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, hf_rng_rsp_paging_information, tvb, tlv_offset, 5, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_paging_cycle, tvb, tlv_offset, 2, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_paging_offset, tvb, tlv_offset+2, 1, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_paging_group_id, tvb, tlv_offset+3, 2, FALSE);
break;
case RNG_RSP_POWER_SAVING_CLASS_PARAMETERS:
sub_tree = add_protocol_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, proto_mac_mgmt_msg_rng_rsp_decoder, tvb, tlv_offset, tlv_len, "Power Saving Class Parameters (%u byte(s))", tlv_len);
dissect_power_saving_class(sub_tree, tlv_type, tvb, tlv_len, pinfo, tlv_offset);
break;
case RNG_RSP_SA_CHALLENGE_TUPLE:
/* Display SA Challenge Tuple header */
sub_tree = add_protocol_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, proto_mac_mgmt_msg_rng_rsp_decoder, tvb, tlv_offset, tlv_len, "SA Challenge Tuple (%u byte(s))", tlv_len);
/* add subtree */
/* Use a local copy of tlv_offset */
this_offset = tlv_offset;
while(this_offset < tlv_len) {
/* Get the sub TLV data. */
init_tlv_info(&sub_tlv_info, tvb, this_offset);
/* get the sub TLV type */
sub_tlv_type = get_tlv_type(&sub_tlv_info);
/* get the TLV length */
sub_tlv_len = get_tlv_length(&sub_tlv_info);
if(tlv_type == -1 || sub_tlv_len > MAX_TLV_LEN || sub_tlv_len < 1)
{ /* invalid tlv info */
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "RNG-RSP TLV error");
proto_tree_add_item(rng_rsp_tree, hf_rng_invalid_tlv, tvb, tlv_offset, (tvb_len - offset), FALSE);
break;
}
/* get the offset to the sub TLV data */
sub_tlv_offset = this_offset + get_tlv_value_offset(&sub_tlv_info);
switch (sub_tlv_type) {
case RNG_RSP_SA_CHALLENGE_BS_RANDOM:
tlv_tree = add_tlv_subtree(&sub_tlv_info, ett_rng_rsp_message_tree, sub_tree, hf_rng_rsp_bs_random, tvb, sub_tlv_offset, sub_tlv_len, FALSE);
proto_tree_add_item(tlv_tree, hf_rng_rsp_bs_random, tvb, sub_tlv_offset, sub_tlv_len, FALSE);
break;
case RNG_RSP_SA_CHALLENGE_AKID:
tlv_tree = add_tlv_subtree(&sub_tlv_info, ett_rng_rsp_message_tree, sub_tree, hf_rng_rsp_akid, tvb, sub_tlv_offset, sub_tlv_len, FALSE);
proto_tree_add_item(tlv_tree, hf_rng_rsp_akid, tvb, sub_tlv_offset, sub_tlv_len, FALSE);
break;
default:
tlv_tree = add_tlv_subtree(&sub_tlv_info, ett_rng_rsp_message_tree, sub_tree, hf_tlv_type, tvb, sub_tlv_offset, sub_tlv_len, FALSE);
proto_tree_add_item(tlv_tree, hf_tlv_type, tvb, sub_tlv_offset, sub_tlv_len, FALSE);
break;
}
this_offset = sub_tlv_len + sub_tlv_offset;
}
break;
case DSx_UPLINK_FLOW:
/* display Uplink Service Flow Encodings info */
/* add subtree */
sub_tree = add_protocol_subtree(&tlv_info, ett_mac_mgmt_msg_rng_rsp_decoder, rng_rsp_tree, proto_mac_mgmt_msg_rng_rsp_decoder, tvb, tlv_offset, tlv_len, "Uplink QOS Parameters (%u bytes)", tlv_len);
/* decode and display the DL Service Flow Encodings */
wimax_service_flow_encodings_decoder(tvb_new_subset(tvb, tlv_offset, tlv_len, tlv_len), pinfo, sub_tree);
break;
case DSx_DOWNLINK_FLOW:
/* display Downlink Service Flow Encodings info */
/* add subtree */
sub_tree = add_protocol_subtree(&tlv_info, ett_mac_mgmt_msg_rng_rsp_decoder, rng_rsp_tree, proto_mac_mgmt_msg_rng_rsp_decoder, tvb, tlv_offset, tlv_len, "Downlink QOS Parameters (%u bytes)", tlv_len);
/* decode and display the DL Service Flow Encodings */
wimax_service_flow_encodings_decoder(tvb_new_subset(tvb, tlv_offset, tlv_len, tlv_len), pinfo, sub_tree);
break;
case RNG_RSP_RANGING_CODE_ATTRIBUTES:
/* case SHORT_HMAC_TUPLE: */
sub_tree = add_tlv_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, hf_rng_rsp_ranging_subchan, tvb, tlv_offset, 4, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_time_symbol_reference, tvb, tlv_offset, 4, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_subchannel_reference, tvb, tlv_offset, 4, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_ranging_code_index, tvb, tlv_offset, 4, FALSE);
proto_tree_add_item(sub_tree, hf_rng_rsp_frame_number2, tvb, tlv_offset, 4, FALSE);
break;
case SHORT_HMAC_TUPLE_COR2:
if (include_cor2_changes) {
sub_tree = add_protocol_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, proto_mac_mgmt_msg_rng_rsp_decoder, tvb, tlv_offset, tlv_len, "Short HMAC Tuple (%u byte(s))", tlv_len);
wimax_short_hmac_tuple_decoder(sub_tree, tvb, tlv_offset, tvb_len - offset);
} else {
/* Unknown TLV type */
sub_tree = add_tlv_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, hf_tlv_type, tvb, tlv_offset, 1, FALSE);
proto_tree_add_item(sub_tree, hf_tlv_type, tvb, tlv_offset, tlv_len, FALSE);
}
break;
default:
sub_tree = add_tlv_subtree(&tlv_info, ett_rng_rsp_message_tree, rng_rsp_tree, hf_tlv_type, tvb, tlv_offset, 1, FALSE);
proto_tree_add_item(sub_tree, hf_tlv_type, tvb, tlv_offset, tlv_len, FALSE);
break;
}
offset = tlv_len + tlv_offset;
} /* end of TLV process while loop */
if (ranging_status_item && dl_freq_override_item)
proto_item_append_text(ranging_status_item, " (shall be set to 2 because Downlink Frequency Override is present)");
if (ss_mac_address_item && frame_number_item) {
proto_item_append_text(frame_number_item, " (mutually exclusive with SS MAC Address!)");
proto_item_append_text(ss_mac_address_item, " (mutually exclusive with Frame Number!)");
}
if (ss_mac_address_item && opportunity_number_item) {
proto_item_append_text(opportunity_number_item, " (mutually exclusive with SS MAC Address!)");
proto_item_append_text(ss_mac_address_item, " (mutually exclusive with Initial Ranging Opportunity Number!)");
}
if (!ranging_status_item)
proto_item_append_text(rng_rsp_tree, " (Ranging status is missing!)");
}
}
/*
* Dissect 802.11 with a variable-length link-layer header and a pseudo-
* header containing radio information.
*/
static int
dissect_wlan_radio (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree, void *data)
{
struct ieee_802_11_phdr *phdr = (struct ieee_802_11_phdr *)data;
proto_item *ti = NULL;
proto_tree *radio_tree = NULL;
float data_rate = 0.0f;
gboolean have_data_rate = FALSE;
gboolean has_short_preamble = FALSE;
gboolean short_preamble = 1;
guint frame_length = tvb_reported_length(tvb); /* length of 802.11 frame data */
/* durations in microseconds */
guint preamble = 0; /* duration of plcp */
guint duration = 0; /* duration of whole frame (plcp + mac data + any trailing parts) */
col_set_str(pinfo->cinfo, COL_PROTOCOL, "Radio");
col_clear(pinfo->cinfo, COL_INFO);
/* Calculate the data rate, if we have the necessary data */
if (phdr->has_data_rate) {
data_rate = phdr->data_rate * 0.5f;
have_data_rate = TRUE;
}
if (phdr->has_signal_dbm) {
col_add_fstr(pinfo->cinfo, COL_RSSI, "%d dBm", phdr->signal_dbm);
} else if (phdr->has_signal_percent) {
col_add_fstr(pinfo->cinfo, COL_RSSI, "%u%%", phdr->signal_percent);
}
if (tree) {
ti = proto_tree_add_item(tree, proto_wlan_radio, tvb, 0, 0, ENC_NA);
radio_tree = proto_item_add_subtree (ti, ett_wlan_radio);
if (phdr->phy != PHDR_802_11_PHY_UNKNOWN) {
proto_tree_add_uint(radio_tree, hf_wlan_radio_phy, tvb, 0, 0,
phdr->phy);
switch (phdr->phy) {
case PHDR_802_11_PHY_11_FHSS:
{
struct ieee_802_11_fhss *info_fhss = &phdr->phy_info.info_11_fhss;
if (info_fhss->has_hop_set) {
proto_tree_add_uint(radio_tree, hf_wlan_radio_11_fhss_hop_set, tvb, 0, 0,
info_fhss->hop_set);
}
if (info_fhss->has_hop_pattern) {
proto_tree_add_uint(radio_tree, hf_wlan_radio_11_fhss_hop_pattern, tvb, 0, 0,
info_fhss->hop_pattern);
}
if (info_fhss->has_hop_index) {
proto_tree_add_uint(radio_tree, hf_wlan_radio_11_fhss_hop_index, tvb, 0, 0,
info_fhss->hop_index);
}
break;
}
case PHDR_802_11_PHY_11B:
{
struct ieee_802_11b *info_b = &phdr->phy_info.info_11b;
has_short_preamble = info_b->has_short_preamble;
short_preamble = info_b->short_preamble;
if (has_short_preamble) {
proto_tree_add_boolean(radio_tree, hf_wlan_radio_short_preamble, tvb, 0, 0,
short_preamble);
}
break;
}
case PHDR_802_11_PHY_11A:
{
struct ieee_802_11a *info_a = &phdr->phy_info.info_11a;
if (info_a->has_channel_type) {
proto_tree_add_uint(radio_tree, hf_wlan_radio_11a_channel_type, tvb, 0, 0,
info_a->channel_type);
}
if (info_a->has_turbo_type) {
proto_tree_add_uint(radio_tree, hf_wlan_radio_11a_turbo_type, tvb, 0, 0,
info_a->turbo_type);
}
break;
}
case PHDR_802_11_PHY_11G:
{
struct ieee_802_11g *info_g = &phdr->phy_info.info_11g;
has_short_preamble = info_g->has_short_preamble;
short_preamble = info_g->short_preamble;
if (has_short_preamble) {
proto_tree_add_boolean(radio_tree, hf_wlan_radio_short_preamble, tvb, 0, 0,
short_preamble);
}
if (info_g->has_mode) {
proto_tree_add_uint(radio_tree, hf_wlan_radio_11g_mode, tvb, 0, 0,
info_g->mode);
}
break;
}
case PHDR_802_11_PHY_11N:
{
struct ieee_802_11n *info_n = &phdr->phy_info.info_11n;
guint bandwidth_40;
if (info_n->has_mcs_index) {
proto_tree_add_uint(radio_tree, hf_wlan_radio_11n_mcs_index, tvb, 0, 0,
info_n->mcs_index);
}
if (info_n->has_bandwidth) {
proto_tree_add_uint(radio_tree, hf_wlan_radio_11n_bandwidth, tvb, 0, 0,
info_n->bandwidth);
}
if (info_n->has_short_gi) {
proto_tree_add_boolean(radio_tree, hf_wlan_radio_11n_short_gi, tvb, 0, 0,
info_n->short_gi);
}
if (info_n->has_greenfield) {
proto_tree_add_boolean(radio_tree, hf_wlan_radio_11n_greenfield, tvb, 0, 0,
info_n->greenfield);
}
if (info_n->has_fec) {
proto_tree_add_uint(radio_tree, hf_wlan_radio_11n_fec, tvb, 0, 0,
info_n->fec);
}
if (info_n->has_stbc_streams) {
proto_tree_add_uint(radio_tree, hf_wlan_radio_11n_stbc_streams, tvb, 0, 0,
info_n->stbc_streams);
}
if (info_n->has_ness) {
proto_tree_add_uint(radio_tree, hf_wlan_radio_11n_ness, tvb, 0, 0,
info_n->ness);
}
/*
* If we have all the fields needed to look up the data rate,
* do so.
*/
if (info_n->has_mcs_index &&
info_n->has_bandwidth &&
info_n->has_short_gi) {
bandwidth_40 =
(info_n->bandwidth == PHDR_802_11_BANDWIDTH_40_MHZ) ?
1 : 0;
if (info_n->mcs_index <= MAX_MCS_INDEX) {
data_rate = ieee80211_htrate(info_n->mcs_index, bandwidth_40, info_n->short_gi);
have_data_rate = TRUE;
}
}
}
break;
case PHDR_802_11_PHY_11AC:
{
struct ieee_802_11ac *info_ac = &phdr->phy_info.info_11ac;
gboolean can_calculate_rate;
guint bandwidth = 0;
guint i;
if (info_ac->has_stbc) {
proto_tree_add_boolean(radio_tree, hf_wlan_radio_11ac_stbc, tvb, 0, 0,
info_ac->stbc);
}
if (info_ac->has_txop_ps_not_allowed) {
proto_tree_add_boolean(radio_tree, hf_wlan_radio_11ac_txop_ps_not_allowed, tvb, 0, 0,
info_ac->txop_ps_not_allowed);
}
if (info_ac->has_short_gi) {
can_calculate_rate = TRUE; /* well, if we also have the bandwidth */
proto_tree_add_boolean(radio_tree, hf_wlan_radio_11ac_short_gi, tvb, 0, 0,
info_ac->short_gi);
} else {
can_calculate_rate = FALSE; /* unknown GI length */
}
if (info_ac->has_short_gi_nsym_disambig) {
proto_tree_add_boolean(radio_tree, hf_wlan_radio_11ac_short_gi_nsym_disambig, tvb, 0, 0,
info_ac->short_gi_nsym_disambig);
}
if (info_ac->has_ldpc_extra_ofdm_symbol) {
proto_tree_add_boolean(radio_tree, hf_wlan_radio_11ac_ldpc_extra_ofdm_symbol, tvb, 0, 0,
info_ac->ldpc_extra_ofdm_symbol);
}
if (info_ac->has_beamformed) {
proto_tree_add_boolean(radio_tree, hf_wlan_radio_11ac_beamformed, tvb, 0, 0,
info_ac->beamformed);
}
if (info_ac->has_bandwidth) {
if (info_ac->bandwidth < G_N_ELEMENTS(ieee80211_vht_bw2rate_index))
bandwidth = ieee80211_vht_bw2rate_index[info_ac->bandwidth];
else
can_calculate_rate = FALSE; /* unknown bandwidth */
proto_tree_add_uint(radio_tree, hf_wlan_radio_11ac_bandwidth, tvb, 0, 0,
info_ac->bandwidth);
} else {
can_calculate_rate = FALSE; /* no bandwidth */
}
for (i = 0; i < 4; i++) {
if (info_ac->nss[i] != 0) {
proto_item *it;
proto_tree *user_tree;
it = proto_tree_add_item(radio_tree, hf_wlan_radio_11ac_user, tvb, 0, 0, ENC_NA);
proto_item_append_text(it, " %d: MCS %u", i, info_ac->mcs[i]);
user_tree = proto_item_add_subtree(it, ett_wlan_radio_11ac_user);
it = proto_tree_add_uint(user_tree, hf_wlan_radio_11ac_mcs, tvb, 0, 0,
info_ac->mcs[i]);
if (info_ac->mcs[i] > MAX_MCS_VHT_INDEX) {
proto_item_append_text(it, " (invalid)");
} else {
proto_item_append_text(it, " (%s %s)",
ieee80211_vhtinfo[info_ac->mcs[i]].modulation,
ieee80211_vhtinfo[info_ac->mcs[i]].coding_rate);
}
proto_tree_add_uint(user_tree, hf_wlan_radio_11ac_nss, tvb, 0, 0,
info_ac->nss[i]);
/*
* If we don't know whether space-time block coding is being
* used, we don't know the number of space-time streams.
*/
if (info_ac->has_stbc) {
guint nsts;
if (info_ac->stbc)
nsts = 2 * info_ac->nss[i];
else
nsts = info_ac->nss[i];
proto_tree_add_uint(user_tree, hf_wlan_radio_11ac_nsts, tvb, 0, 0,
nsts);
}
if (info_ac->has_fec) {
proto_tree_add_uint(user_tree, hf_wlan_radio_11ac_fec, tvb, 0, 0,
(info_ac->fec >> i) & 0x01);
}
/*
* If we can calculate the data rate for this user, do so.
*/
if (can_calculate_rate && info_ac->mcs[i] <= MAX_MCS_VHT_INDEX) {
data_rate = ieee80211_vhtrate(info_ac->mcs[i], bandwidth, info_ac->short_gi) * info_ac->nss[i];
if (data_rate != 0.0f) {
proto_tree_add_float_format_value(user_tree, hf_wlan_radio_data_rate, tvb, 0, 0,
data_rate,
"%.1f Mb/s",
data_rate);
}
}
}
}
if (info_ac->has_group_id) {
proto_tree_add_uint(radio_tree, hf_wlan_radio_11ac_gid, tvb, 0, 0,
info_ac->group_id);
}
if (info_ac->has_partial_aid) {
proto_tree_add_uint(radio_tree, hf_wlan_radio_11ac_p_aid, tvb, 0, 0,
info_ac->partial_aid);
}
}
break;
}
