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/* packet-ieee80211-radio.c
* Routines for pseudo 802.11 header dissection and radio packet timing calculation
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* Copyright 2012 Parc Inc and Samsung Electronics
* Copyright 2015, 2016 & 2017 Cisco Inc
*
* Copied from README.developer
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/expert.h>
#include <wiretap/wtap.h>
#include <epan/prefs.h>
#include <epan/proto_data.h>
#include <epan/tap.h>
#include "packet-ieee80211.h"
#include "packet-ieee80211-radio.h"
#include "packet-ieee80211-radiotap-defs.h"
#include "math.h"
void proto_register_ieee80211_radio(void);
void proto_reg_handoff_ieee80211_radio(void);
static dissector_handle_t wlan_radio_handle;
static dissector_handle_t wlan_noqos_radio_handle;
static dissector_handle_t ieee80211_handle;
static dissector_handle_t ieee80211_noqos_handle;
static int proto_wlan_radio = -1;
/* ************************************************************************* */
/* Header field info values for radio information */
/* ************************************************************************* */
static int hf_wlan_radio_phy = -1;
static int hf_wlan_radio_11_fhss_hop_set = -1;
static int hf_wlan_radio_11_fhss_hop_pattern = -1;
static int hf_wlan_radio_11_fhss_hop_index = -1;
static int hf_wlan_radio_11a_channel_type = -1;
static int hf_wlan_radio_11a_turbo_type = -1;
static int hf_wlan_radio_11g_mode = -1;
static int hf_wlan_radio_11n_mcs_index = -1;
static int hf_wlan_radio_11n_bandwidth = -1;
static int hf_wlan_radio_11n_short_gi = -1;
static int hf_wlan_radio_11n_greenfield = -1;
static int hf_wlan_radio_11n_fec = -1;
static int hf_wlan_radio_11n_stbc_streams = -1;
static int hf_wlan_radio_11n_ness = -1;
static int hf_wlan_radio_11ac_stbc = -1;
static int hf_wlan_radio_11ac_txop_ps_not_allowed = -1;
static int hf_wlan_radio_11ac_short_gi = -1;
static int hf_wlan_radio_11ac_short_gi_nsym_disambig = -1;
static int hf_wlan_radio_11ac_ldpc_extra_ofdm_symbol = -1;
static int hf_wlan_radio_11ac_beamformed = -1;
static int hf_wlan_radio_11ac_bandwidth = -1;
static int hf_wlan_radio_11ac_user = -1;
static int hf_wlan_radio_11ac_nsts = -1;
static int hf_wlan_radio_11ac_mcs = -1;
static int hf_wlan_radio_11ac_nss = -1;
static int hf_wlan_radio_11ac_fec = -1;
static int hf_wlan_radio_11ac_gid = -1;
static int hf_wlan_radio_11ac_p_aid = -1;
static int hf_wlan_radio_data_rate = -1;
static int hf_wlan_radio_channel = -1;
static int hf_wlan_radio_frequency = -1;
static int hf_wlan_radio_short_preamble = -1;
static int hf_wlan_radio_signal_percent = -1;
static int hf_wlan_radio_signal_db = -1;
static int hf_wlan_radio_signal_dbm = -1;
static int hf_wlan_radio_noise_percent = -1;
static int hf_wlan_radio_noise_db = -1;
static int hf_wlan_radio_noise_dbm = -1;
static int hf_wlan_radio_snr = -1;
static int hf_wlan_radio_timestamp = -1;
static int hf_wlan_last_part_of_a_mpdu = -1;
static int hf_wlan_a_mpdu_delim_crc_error = -1;
static int hf_wlan_a_mpdu_aggregate_id = -1;
static int hf_wlan_radio_duration = -1;
static int hf_wlan_radio_preamble = -1;
static int hf_wlan_radio_aggregate = -1;
static int hf_wlan_radio_aggregate_duration = -1;
static int hf_wlan_radio_ifs = -1;
static int hf_wlan_radio_start_tsf = -1;
static int hf_wlan_radio_end_tsf = -1;
static int hf_wlan_zero_length_psdu_type = -1;
static expert_field ei_wlan_radio_assumed_short_preamble = EI_INIT;
static expert_field ei_wlan_radio_assumed_non_greenfield = EI_INIT;
static expert_field ei_wlan_radio_assumed_no_stbc = EI_INIT;
static expert_field ei_wlan_radio_assumed_no_extension_streams = EI_INIT;
static expert_field ei_wlan_radio_assumed_bcc_fec = EI_INIT;
static int wlan_radio_tap = -1;
static int wlan_radio_timeline_tap = -1;
/* Settings */
static gboolean wlan_radio_always_short_preamble = FALSE;
static gboolean wlan_radio_tsf_at_end = TRUE;
static gboolean wlan_radio_timeline_enabled = FALSE;
static const value_string phy_vals[] = {
{ PHDR_802_11_PHY_11_FHSS, "802.11 FHSS" },
{ PHDR_802_11_PHY_11_IR, "802.11 IR" },
{ PHDR_802_11_PHY_11_DSSS, "802.11 DSSS" },
{ PHDR_802_11_PHY_11B, "802.11b (HR/DSSS)" },
{ PHDR_802_11_PHY_11A, "802.11a (OFDM)" },
{ PHDR_802_11_PHY_11G, "802.11g (ERP)" },
{ PHDR_802_11_PHY_11N, "802.11n (HT)" },
{ PHDR_802_11_PHY_11AC, "802.11ac (VHT)" },
{ PHDR_802_11_PHY_11AD, "802.11ad (DMG)" },
{ PHDR_802_11_PHY_11AH, "802.11ah (S1G)" },
{ PHDR_802_11_PHY_11AX, "802.11ax (HE)" },
{ 0, NULL }
};
static const value_string channel_type_11a_vals[] = {
{ PHDR_802_11A_CHANNEL_TYPE_NORMAL, "Normal" },
{ PHDR_802_11A_CHANNEL_TYPE_HALF_CLOCKED, "Half-clocked" },
{ PHDR_802_11A_CHANNEL_TYPE_QUARTER_CLOCKED, "Quarter-clocked" },
{ 0, NULL }
};
static const value_string turbo_type_11a_vals[] = {
{ PHDR_802_11A_TURBO_TYPE_NORMAL, "Non-turbo" },
{ PHDR_802_11A_TURBO_TYPE_TURBO, "Turbo" },
{ PHDR_802_11A_TURBO_TYPE_DYNAMIC_TURBO, "Dynamic turbo" },
{ PHDR_802_11A_TURBO_TYPE_STATIC_TURBO, "Static turbo" },
{ 0, NULL }
};
static const value_string mode_11g_vals[] = {
{ PHDR_802_11G_MODE_NORMAL, "None" },
{ PHDR_802_11G_MODE_SUPER_G, "Super G" },
{ 0, NULL }
};
static const value_string bandwidth_vals[] = {
{ PHDR_802_11_BANDWIDTH_20_MHZ, "20 MHz" },
{ PHDR_802_11_BANDWIDTH_40_MHZ, "40 MHz" },
{ PHDR_802_11_BANDWIDTH_20_20L, "20 MHz + 20 MHz lower" },
{ PHDR_802_11_BANDWIDTH_20_20U, "20 MHz + 20 MHz upper" },
{ PHDR_802_11_BANDWIDTH_80_MHZ, "80 MHz" },
{ PHDR_802_11_BANDWIDTH_40_40L, "40 MHz + 40 MHz lower" },
{ PHDR_802_11_BANDWIDTH_40_40U, "40 MHz + 40 MHz upper" },
{ PHDR_802_11_BANDWIDTH_20LL, "20 MHz, channel 1/4" },
{ PHDR_802_11_BANDWIDTH_20LU, "20 MHz, channel 2/4" },
{ PHDR_802_11_BANDWIDTH_20UL, "20 MHz, channel 3/4" },
{ PHDR_802_11_BANDWIDTH_20UU, "20 MHz, channel 4/4" },
{ PHDR_802_11_BANDWIDTH_160_MHZ, "160 MHz" },
{ PHDR_802_11_BANDWIDTH_80_80L, "80 MHz + 80 MHz lower" },
{ PHDR_802_11_BANDWIDTH_80_80U, "80 MHz + 80 MHz upper" },
{ PHDR_802_11_BANDWIDTH_40LL, "40 MHz, channel 1/4" },
{ PHDR_802_11_BANDWIDTH_40LU, "40 MHz, channel 2/4" },
{ PHDR_802_11_BANDWIDTH_40UL, "40 MHz, channel 3/4" },
{ PHDR_802_11_BANDWIDTH_40UU, "40 MHz, channel 4/4" },
{ PHDR_802_11_BANDWIDTH_20LLL, "20 MHz, channel 1/8" },
{ PHDR_802_11_BANDWIDTH_20LLU, "20 MHz, channel 2/8" },
{ PHDR_802_11_BANDWIDTH_20LUL, "20 MHz, channel 3/8" },
{ PHDR_802_11_BANDWIDTH_20LUU, "20 MHz, channel 4/8" },
{ PHDR_802_11_BANDWIDTH_20ULL, "20 MHz, channel 5/8" },
{ PHDR_802_11_BANDWIDTH_20ULU, "20 MHz, channel 6/8" },
{ PHDR_802_11_BANDWIDTH_20UUL, "20 MHz, channel 7/8" },
{ PHDR_802_11_BANDWIDTH_20UUU, "20 MHz, channel 8/8" },
{ 0, NULL }
};
static const value_string fec_vals[] = {
{ 0, "BEC" },
{ 1, "LDPC" },
{ 0, NULL }
};
static const value_string zero_length_psdu_vals[] = {
{ 0, "sounding PPDU" },
{ 1, "data not captured" },
{ 255, "vendor-specific" },
{ 0, NULL }
};
/*
* Lookup for the MCS index (0-76)
* returning the number of data bits per symbol
* assumes 52 subcarriers (20MHz)
* symbols are 4us for long guard interval, 3.6us for short guard interval
* Note: MCS 32 is special - only valid for 40Mhz channel.
*/
WS_DLL_PUBLIC_DEF const guint16 ieee80211_ht_Dbps[MAX_MCS_INDEX+1] = {
/* MCS 0 - 1 stream */
26, 52, 78, 104, 156, 208, 234, 260,
/* MCS 8 - 2 stream */
52, 104, 156, 208, 312, 416, 468, 520,
/* MCS 16 - 3 stream */
78, 156, 234, 312, 468, 624, 702, 780,
/* MCS 24 - 4 stream */
104, 208, 312, 416, 624, 832, 936, 1040,
/* MCS 32 - 1 stream */
12, /* only valid for 40Mhz - 11a/g DUP mode */
/* MCS 33 - 2 stream */
156, 208, 260, 234, 312, 390,
/* MCS 39 - 3 stream */
208, 260, 260, 312, 364, 364, 416, 312, 390, 390, 468, 546, 546, 624,
/* MCS 53 - 4 stream */
260, 312, 364, 312, 364, 416, 468, 416, 468, 520, 520, 572,
390, 468, 546, 468, 546, 624, 702, 624, 702, 780, 780, 858
};
/*
* Calculates data rate corresponding to a given 802.11n MCS index,
* bandwidth, and guard interval.
*/
float ieee80211_htrate(int mcs_index, gboolean bandwidth, gboolean short_gi)
{
return (float)(ieee80211_ht_Dbps[mcs_index] * (bandwidth ? 108 : 52) / 52.0 / (short_gi ? 3.6 : 4.0));
}
static const guint8 ieee80211_ht_streams[MAX_MCS_INDEX+1] = {
1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,
1,2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,
4,4,4,4,4,4,4,4,4,4,4,4,4
};
static const guint8 ieee80211_ht_Nes[MAX_MCS_INDEX+1] = {
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
1,1,1,1,1,2,2,2, 1,1,1,1,2,2,2,2,
1,
1,1,1,1,1,1,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2
};
#define MAX_MCS_VHT_INDEX 9
/*
* Maps a VHT bandwidth index to ieee80211_vhtinfo.rates index.
*/
static const int ieee80211_vht_bw2rate_index[] = {
/* 20Mhz total */ 0,
/* 40Mhz total */ 1, 0, 0,
/* 80Mhz total */ 2, 1, 1, 0, 0, 0, 0,
/* 160Mhz total */ 3, 2, 2, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0
};
struct mcs_vht_info {
const char *modulation;
const char *coding_rate;
float data_bits_per_symbol; /* assuming 20MHz / 52 subcarriers */
};
static const struct mcs_vht_info ieee80211_vhtinfo[MAX_MCS_VHT_INDEX+1] = {
/* MCS 0 */
{ "BPSK", "1/2", 26 },
/* MCS 1 */
{ "QPSK", "1/2", 52 },
/* MCS 2 */
{ "QPSK", "3/4", 78 },
/* MCS 3 */
{ "16-QAM", "1/2", 104 },
/* MCS 4 */
{ "16-QAM", "3/4", 156 },
/* MCS 5 */
{ "64-QAM", "2/3", 208 },
/* MCS 6 */
{ "64-QAM", "3/4", 234 },
/* MCS 7 */
{ "64-QAM", "5/6", 260 },
/* MCS 8 */
{ "256-QAM", "3/4", 312 },
/* MCS 9 */
{ "256-QAM", "5/6", (float)(1040/3.0) }
};
/* map a bandwidth index to the number of data subcarriers */
static const guint subcarriers[4] = { 52, 108, 234, 468 };
#define MAX_VHT_NSS 8
struct mcs_vht_valid {
gboolean valid[4][MAX_VHT_NSS]; /* indexed by bandwidth and NSS-1 */
};
static const struct mcs_vht_valid ieee80211_vhtvalid[MAX_MCS_VHT_INDEX+1] = {
/* MCS 0 */
{
{ /* 20 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 40 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 80 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 160 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
}
},
/* MCS 1 */
{
{ /* 20 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 40 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 80 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 160 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
}
},
/* MCS 2 */
{
{ /* 20 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 40 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 80 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 160 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
}
},
/* MCS 3 */
{
{ /* 20 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 40 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 80 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 160 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
}
},
/* MCS 4 */
{
{ /* 20 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 40 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 80 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 160 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
}
},
/* MCS 5 */
{
{ /* 20 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 40 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 80 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 160 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
}
},
/* MCS 6 */
{
{ /* 20 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 40 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 80 Mhz */ { TRUE, TRUE, FALSE, TRUE, TRUE, TRUE, FALSE, TRUE },
/* 160 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
}
},
/* MCS 7 */
{
{ /* 20 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 40 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 80 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 160 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
}
},
/* MCS 8 */
{
{ /* 20 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 40 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 80 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 160 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
}
},
/* MCS 9 */
{
{ /* 20 Mhz */ { FALSE, FALSE, TRUE, FALSE, FALSE, TRUE, FALSE, FALSE },
/* 40 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE, TRUE },
/* 80 Mhz */ { TRUE, TRUE, TRUE, TRUE, TRUE, FALSE, TRUE, TRUE },
/* 160 Mhz */ { TRUE, TRUE, FALSE, TRUE, TRUE, TRUE, TRUE, TRUE },
}
}
};
/*
* Calculates data rate corresponding to a given 802.11ac MCS index,
* bandwidth, and guard interval.
*/
static float ieee80211_vhtrate(int mcs_index, guint bandwidth_index, gboolean short_gi)
{
return (float)(ieee80211_vhtinfo[mcs_index].data_bits_per_symbol * subcarriers[bandwidth_index] / (short_gi ? 3.6 : 4.0) / 52.0);
}
/*
* HE SU OFDM MCS rate table converted from http://mcsindex.com/
* indexed by (NSTS,MCS,BW,GI)
*/
#define HE_MAX_NSTS 8
#define HE_MAX_MCS 12
#define HE_SU_MAX_BW 4
#define HE_MAX_GI 3
static float he_ofdm_tab[HE_MAX_NSTS][HE_MAX_MCS][HE_SU_MAX_BW][HE_MAX_GI] = {
{
{{ 8.6f, 8.1f, 7.3f},{ 17.2f, 16.3f, 14.6f},{ 36.0f, 34.0f, 30.6f},{ 72.1f, 68.1f, 61.3f}},
{{ 17.2f, 16.3f, 14.6f},{ 34.4f, 32.5f, 29.3f},{ 72.1f, 68.1f, 61.3f},{ 144.1f, 136.1f, 122.5f}},
{{ 25.8f, 24.4f, 21.9f},{ 51.6f, 48.8f, 43.9f},{ 108.1f, 102.1f, 91.9f},{ 216.2f, 204.2f, 183.8f}},
{{ 34.4f, 32.5f, 29.3f},{ 68.8f, 65.0f, 58.5f},{ 144.1f, 136.1f, 122.5f},{ 288.2f, 272.2f, 245.0f}},
{{ 51.6f, 48.8f, 43.9f},{ 103.2f, 97.5f, 87.8f},{ 216.2f, 204.2f, 183.8f},{ 432.4f, 408.3f, 367.5f}},
{{ 68.8f, 65.0f, 58.5f},{ 137.6f, 130.0f, 117.0f},{ 288.2f, 272.2f, 245.0f},{ 576.5f, 544.4f, 490.0f}},
{{ 77.4f, 73.1f, 65.8f},{ 154.9f, 146.3f, 131.6f},{ 324.3f, 306.3f, 275.6f},{ 648.5f, 612.5f, 551.3f}},
{{ 86.0f, 81.3f, 73.1f},{ 172.1f, 162.5f, 146.3f},{ 360.3f, 340.3f, 306.3f},{ 720.6f, 680.6f, 612.5f}},
{{ 103.2f, 97.5f, 87.8f},{ 206.5f, 195.0f, 175.5f},{ 432.4f, 408.3f, 367.5f},{ 864.7f, 816.7f, 735.0f}},
{{ 114.7f, 108.3f, 97.5f},{ 229.4f, 216.7f, 195.0f},{ 480.4f, 453.7f, 408.3f},{ 960.8f, 907.4f, 816.7f}},
{{ 129.0f, 121.9f, 109.7f},{ 258.1f, 243.8f, 219.4f},{ 540.4f, 510.4f, 459.4f},{ 1080.9f, 1020.8f, 918.8f}},
{{ 143.4f, 135.4f, 121.9f},{ 286.8f, 270.8f, 243.8f},{ 600.5f, 567.1f, 510.4f},{ 1201.0f, 1134.3f, 1020.8f}}
},{
{{ 17.2f, 16.3f, 14.6f},{ 34.4f, 32.5f, 29.3f},{ 72.1f, 68.1f, 61.3f},{ 144.1f, 136.1f, 122.5f}},
{{ 34.4f, 32.5f, 29.3f},{ 68.8f, 65.0f, 58.5f},{ 144.1f, 136.1f, 122.5f},{ 288.2f, 272.2f, 245.0f}},
{{ 51.6f, 48.8f, 43.9f},{ 103.2f, 97.5f, 87.8f},{ 216.2f, 204.2f, 183.8f},{ 432.4f, 408.3f, 367.5f}},
{{ 68.8f, 65.0f, 58.5f},{ 137.6f, 130.0f, 117.0f},{ 288.2f, 272.2f, 245.0f},{ 576.5f, 544.4f, 490.0f}},
{{ 103.2f, 97.5f, 87.8f},{ 206.5f, 195.0f, 175.5f},{ 432.4f, 408.3f, 367.5f},{ 864.7f, 816.7f, 735.0f}},
{{ 137.6f, 130.0f, 117.0f},{ 275.3f, 260.0f, 234.0f},{ 576.5f, 544.4f, 490.0f},{ 1152.9f, 1088.9f, 980.0f}},
{{ 154.9f, 146.3f, 131.6f},{ 309.7f, 292.5f, 263.3f},{ 648.5f, 612.5f, 551.3f},{ 1297.1f, 1225.0f, 1102.5f}},
{{ 172.1f, 162.5f, 146.3f},{ 344.1f, 325.0f, 292.5f},{ 720.6f, 680.6f, 612.5f},{ 1441.2f, 1361.1f, 1225.0f}},
{{ 206.5f, 195.0f, 175.5f},{ 412.9f, 390.0f, 351.0f},{ 864.7f, 816.7f, 735.0f},{ 1729.4f, 1633.3f, 1470.0f}},
{{ 229.4f, 216.7f, 195.0f},{ 458.8f, 433.3f, 390.0f},{ 960.8f, 907.4f, 816.7f},{ 1921.6f, 1814.8f, 1633.3f}},
{{ 258.1f, 243.8f, 219.4f},{ 516.2f, 487.5f, 438.8f},{ 1080.9f, 1020.8f, 918.8f},{ 2161.8f, 2041.7f, 1837.5f}},
{{ 286.8f, 270.8f, 243.8f},{ 573.5f, 541.7f, 487.5f},{ 1201.0f, 1134.3f, 1020.8f},{ 2402.0f, 2268.5f, 2041.7f}}
},{
{{ 25.8f, 24.4f, 21.9f},{ 51.6f, 48.8f, 43.9f},{ 108.1f, 102.1f, 91.9f},{ 216.2f, 204.2f, 183.8f}},
{{ 51.6f, 48.8f, 43.9f},{ 103.2f, 97.5f, 87.8f},{ 216.2f, 204.2f, 183.8f},{ 432.4f, 408.3f, 367.5f}},
{{ 77.4f, 73.1f, 65.8f},{ 154.9f, 146.3f, 131.6f},{ 324.3f, 306.3f, 275.6f},{ 648.5f, 612.5f, 551.3f}},
{{ 103.2f, 97.5f, 87.8f},{ 206.5f, 195.0f, 175.5f},{ 432.4f, 408.3f, 367.5f},{ 864.7f, 816.7f, 735.0f}},
{{ 154.9f, 146.3f, 131.6f},{ 309.7f, 292.5f, 263.3f},{ 648.5f, 612.5f, 551.3f},{ 1297.1f, 1225.0f, 1102.5f}},
{{ 206.5f, 195.0f, 175.5f},{ 412.9f, 390.0f, 351.0f},{ 864.7f, 816.7f, 735.0f},{ 1729.4f, 1633.3f, 1470.0f}},
{{ 232.3f, 219.4f, 197.4f},{ 464.6f, 438.8f, 394.9f},{ 972.8f, 918.8f, 826.9f},{ 1945.6f, 1837.5f, 1653.8f}},
{{ 258.1f, 243.8f, 219.4f},{ 516.2f, 487.5f, 438.8f},{ 1080.9f, 1020.8f, 918.8f},{ 2161.8f, 2041.7f, 1837.5f}},
{{ 309.7f, 292.5f, 263.3f},{ 619.4f, 585.0f, 526.5f},{ 1297.1f, 1225.0f, 1102.5f},{ 2594.1f, 2450.0f, 2205.0f}},
{{ 344.1f, 325.0f, 292.5f},{ 688.2f, 650.0f, 585.0f},{ 1441.2f, 1361.1f, 1225.0f},{ 2882.4f, 2722.2f, 2450.0f}},
{{ 387.1f, 365.6f, 329.1f},{ 774.3f, 731.3f, 658.1f},{ 1621.3f, 1531.3f, 1378.1f},{ 3242.6f, 3062.5f, 2756.3f}},
{{ 430.1f, 406.3f, 365.6f},{ 860.3f, 812.5f, 731.3f},{ 1801.5f, 1701.4f, 1531.3f},{ 3602.9f, 3402.8f, 3062.5f}}
},{
{{ 34.4f, 32.5f, 29.3f},{ 68.8f, 65.0f, 58.5f},{ 144.1f, 136.1f, 122.5f},{ 288.2f, 272.2f, 245.0f}},
{{ 68.8f, 65.0f, 58.5f},{ 137.6f, 130.0f, 117.0f},{ 288.2f, 272.2f, 245.0f},{ 576.5f, 544.4f, 490.0f}},
{{ 103.2f, 97.5f, 87.8f},{ 206.5f, 195.0f, 175.5f},{ 432.4f, 408.3f, 367.5f},{ 864.7f, 816.7f, 735.0f}},
{{ 137.6f, 130.0f, 117.0f},{ 275.3f, 260.0f, 234.0f},{ 576.5f, 544.4f, 490.0f},{ 1152.9f, 1088.9f, 980.0f}},
{{ 206.5f, 195.0f, 175.5f},{ 412.9f, 390.0f, 351.0f},{ 864.7f, 816.7f, 735.0f},{ 1729.4f, 1633.3f, 1470.0f}},
{{ 275.3f, 260.0f, 234.0f},{ 550.6f, 520.0f, 468.0f},{ 1152.9f, 1088.9f, 980.0f},{ 2305.9f, 2177.8f, 1960.0f}},
{{ 309.7f, 292.5f, 263.3f},{ 619.4f, 585.0f, 526.5f},{ 1297.1f, 1225.0f, 1102.5f},{ 2594.1f, 2450.0f, 2205.0f}},
{{ 344.1f, 325.0f, 292.5f},{ 688.2f, 650.0f, 585.0f},{ 1441.2f, 1361.1f, 1225.0f},{ 2882.4f, 2722.2f, 2450.0f}},
{{ 412.9f, 390.0f, 351.0f},{ 825.9f, 780.0f, 702.0f},{ 1729.4f, 1633.3f, 1470.0f},{ 3458.8f, 3266.7f, 2940.0f}},
{{ 458.8f, 433.3f, 390.0f},{ 917.6f, 866.7f, 780.0f},{ 1921.6f, 1814.8f, 1633.3f},{ 3843.1f, 3629.6f, 3266.7f}},
{{ 516.2f, 487.5f, 438.8f},{ 1032.4f, 975.0f, 877.5f},{ 2161.8f, 2041.7f, 1837.5f},{ 4323.5f, 4083.3f, 3675.0f}},
{{ 573.5f, 541.7f, 487.5f},{ 1147.1f, 1083.3f, 975.0f},{ 2402.0f, 2268.5f, 2041.7f},{ 4803.9f, 4537.0f, 4083.3f}}
},{
{{ 43.0f, 40.6f, 36.6f},{ 86.0f, 81.3f, 73.1f},{ 180.1f, 170.1f, 153.1f},{ 360.3f, 340.3f, 306.3f}},
{{ 86.0f, 81.3f, 73.1f},{ 172.1f, 162.5f, 146.3f},{ 360.3f, 340.3f, 306.3f},{ 720.6f, 680.6f, 612.5f}},
{{ 129.0f, 121.9f, 109.7f},{ 258.1f, 243.8f, 219.4f},{ 540.4f, 510.4f, 459.4f},{ 1080.9f, 1020.8f, 918.8f}},
{{ 172.1f, 162.5f, 146.3f},{ 344.1f, 325.0f, 292.5f},{ 720.6f, 680.6f, 612.5f},{ 1441.2f, 1361.1f, 1225.0f}},
{{ 258.1f, 243.8f, 219.4f},{ 516.2f, 487.5f, 438.8f},{ 1080.9f, 1020.8f, 918.8f},{ 2161.8f, 2041.7f, 1837.5f}},
{{ 344.1f, 325.0f, 292.5f},{ 688.2f, 650.0f, 585.0f},{ 1441.2f, 1361.1f, 1225.0f},{ 2882.4f, 2722.2f, 2450.0f}},
{{ 387.1f, 365.6f, 329.1f},{ 774.3f, 731.3f, 658.1f},{ 1621.3f, 1531.3f, 1378.1f},{ 3242.6f, 3062.5f, 2756.3f}},
{{ 430.1f, 406.3f, 365.6f},{ 860.3f, 812.5f, 731.3f},{ 1801.5f, 1701.4f, 1531.3f},{ 3602.9f, 3402.8f, 3062.5f}},
{{ 516.2f, 487.5f, 438.8f},{ 1032.4f, 975.0f, 877.5f},{ 2161.8f, 2041.7f, 1837.5f},{ 4323.5f, 4083.3f, 3675.0f}},
{{ 573.5f, 541.7f, 487.5f},{ 1147.1f, 1083.3f, 975.0f},{ 2402.0f, 2268.5f, 2041.7f},{ 4803.9f, 4537.0f, 4083.3f}},
{{ 645.2f, 609.4f, 548.4f},{ 1290.4f, 1218.8f, 1096.9f},{ 2702.2f, 2552.1f, 2296.9f},{ 5404.4f, 5104.2f, 4593.8f}},
{{ 716.9f, 677.1f, 609.4f},{ 1433.8f, 1354.2f, 1218.8f},{ 3002.5f, 2835.6f, 2552.1f},{ 6004.9f, 5671.3f, 5104.2f}}
},{
{{ 51.6f, 48.8f, 43.9f},{ 103.2f, 97.5f, 87.8f},{ 216.2f, 204.2f, 183.8f},{ 432.4f, 408.3f, 367.5f}},
{{ 103.2f, 97.5f, 87.8f},{ 206.5f, 195.0f, 175.5f},{ 432.4f, 408.3f, 367.5f},{ 864.7f, 816.7f, 735.0f}},
{{ 154.9f, 146.3f, 131.6f},{ 309.7f, 292.5f, 263.3f},{ 648.5f, 612.5f, 551.3f},{ 1297.1f, 1225.0f, 1102.5f}},
{{ 206.5f, 195.0f, 175.5f},{ 412.9f, 390.0f, 351.0f},{ 864.7f, 816.7f, 735.0f},{ 1729.4f, 1633.3f, 1470.0f}},
{{ 309.7f, 292.5f, 263.3f},{ 619.4f, 585.0f, 526.5f},{ 1297.1f, 1225.0f, 1102.5f},{ 2594.1f, 2450.0f, 2205.0f}},
{{ 412.9f, 390.0f, 351.0f},{ 825.9f, 780.0f, 702.0f},{ 1729.4f, 1633.3f, 1470.0f},{ 3458.8f, 3266.7f, 2940.0f}},
{{ 464.6f, 438.8f, 394.9f},{ 929.1f, 877.5f, 789.8f},{ 1945.6f, 1837.5f, 1653.8f},{ 3891.2f, 3675.0f, 3307.5f}},
{{ 516.2f, 487.5f, 438.8f},{ 1032.4f, 975.0f, 877.5f},{ 2161.8f, 2041.7f, 1837.5f},{ 4323.5f, 4083.3f, 3675.0f}},
{{ 619.4f, 585.0f, 526.5f},{ 1238.8f, 1170.0f, 1053.0f},{ 2594.1f, 2450.0f, 2205.0f},{ 5188.2f, 4900.0f, 4410.0f}},
{{ 688.2f, 650.0f, 585.0f},{ 1376.5f, 1300.0f, 1170.0f},{ 2882.4f, 2722.2f, 2450.0f},{ 5764.7f, 5444.4f, 4900.0f}},
{{ 774.3f, 731.3f, 658.1f},{ 1548.5f, 1462.5f, 1316.3f},{ 3242.6f, 3062.5f, 2756.3f},{ 6485.3f, 6125.0f, 5512.5f}},
{{ 860.3f, 812.5f, 731.3f},{ 1720.6f, 1625.0f, 1462.5f},{ 3602.9f, 3402.8f, 3062.5f},{ 7205.9f, 6805.6f, 6125.0f}}
},{
{{ 60.2f, 56.9f, 51.2f},{ 120.4f, 113.8f, 102.4f},{ 252.2f, 238.2f, 214.4f},{ 504.4f, 476.4f, 428.8f}},
{{ 120.4f, 113.8f, 102.4f},{ 240.9f, 227.5f, 204.8f},{ 504.4f, 476.4f, 428.8f},{ 1008.8f, 952.8f, 857.5f}},
{{ 180.7f, 170.6f, 153.6f},{ 361.3f, 341.3f, 307.1f},{ 756.6f, 714.6f, 643.1f},{ 1513.2f, 1429.2f, 1286.3f}},
{{ 240.9f, 227.5f, 204.8f},{ 481.8f, 455.0f, 409.5f},{ 1008.8f, 952.8f, 857.5f},{ 2017.6f, 1905.6f, 1715.0f}},
{{ 361.3f, 341.3f, 307.1f},{ 722.6f, 682.5f, 614.3f},{ 1513.2f, 1429.2f, 1286.3f},{ 3026.5f, 2858.3f, 2572.5f}},
{{ 481.8f, 455.0f, 409.5f},{ 963.5f, 910.0f, 819.0f},{ 2017.6f, 1905.6f, 1715.0f},{ 4035.3f, 3811.1f, 3430.0f}},
{{ 542.0f, 511.9f, 460.7f},{ 1084.0f, 1023.8f, 921.4f},{ 2269.9f, 2143.8f, 1929.4f},{ 4539.7f, 4287.5f, 3858.8f}},
{{ 602.2f, 568.8f, 511.9f},{ 1204.4f, 1137.5f, 1023.8f},{ 2522.1f, 2381.9f, 2143.8f},{ 5044.1f, 4763.9f, 4287.5f}},
{{ 722.6f, 682.5f, 614.3f},{ 1445.3f, 1365.0f, 1228.5f},{ 3026.5f, 2858.3f, 2572.5f},{ 6052.9f, 5716.7f, 5145.0f}},
{{ 802.9f, 758.3f, 682.5f},{ 1605.9f, 1516.7f, 1365.0f},{ 3362.7f, 3175.9f, 2858.3f},{ 6725.5f, 6351.9f, 5716.7f}},
{{ 903.3f, 853.1f, 767.8f},{ 1806.6f, 1706.3f, 1535.6f},{ 3783.1f, 3572.9f, 3215.6f},{ 7566.2f, 7145.8f, 6431.3f}},
{{ 1003.7f, 947.9f, 853.1f},{ 2007.4f, 1895.8f, 1706.3f},{ 4203.4f, 3969.9f, 3572.9f},{ 8406.9f, 7939.8f, 7145.8f}}
},{
{{ 68.8f, 65.0f, 58.5f},{ 137.6f, 130.0f, 117.0f},{ 288.2f, 272.2f, 245.0f},{ 576.5f, 544.4f, 490.0f}},
{{ 137.6f, 130.0f, 117.0f},{ 275.3f, 260.0f, 234.0f},{ 576.5f, 544.4f, 490.0f},{ 1152.9f, 1088.9f, 980.0f}},
{{ 206.5f, 195.0f, 175.5f},{ 412.9f, 390.0f, 351.0f},{ 864.7f, 816.7f, 735.0f},{ 1729.4f, 1633.3f, 1470.0f}},
{{ 275.3f, 260.0f, 234.0f},{ 550.6f, 520.0f, 468.0f},{ 1152.9f, 1088.9f, 980.0f},{ 2305.9f, 2177.8f, 1960.0f}},
{{ 412.9f, 390.0f, 351.0f},{ 825.9f, 780.0f, 702.0f},{ 1729.4f, 1633.3f, 1470.0f},{ 3458.8f, 3266.7f, 2940.0f}},
{{ 550.6f, 520.0f, 468.0f},{ 1101.2f, 1040.0f, 936.0f},{ 2305.9f, 2177.8f, 1960.0f},{ 4611.8f, 4355.6f, 3920.0f}},
{{ 619.4f, 585.0f, 526.5f},{ 1238.8f, 1170.0f, 1053.0f},{ 2594.1f, 2450.0f, 2205.0f},{ 5188.2f, 4900.0f, 4410.0f}},
{{ 688.2f, 650.0f, 585.0f},{ 1376.5f, 1300.0f, 1170.0f},{ 2882.4f, 2722.2f, 2450.0f},{ 5764.7f, 5444.4f, 4900.0f}},
{{ 825.9f, 780.0f, 702.0f},{ 1651.8f, 1560.0f, 1404.0f},{ 3458.8f, 3266.7f, 2940.0f},{ 6917.6f, 6533.3f, 5880.0f}},
{{ 917.6f, 866.7f, 780.0f},{ 1835.3f, 1733.3f, 1560.0f},{ 3843.1f, 3629.6f, 3266.7f},{ 7686.3f, 7259.3f, 6533.3f}},
{{ 1032.4f, 975.0f, 877.5f},{ 2064.7f, 1950.0f, 1755.0f},{ 4323.5f, 4083.3f, 3675.0f},{ 8647.1f, 8166.7f, 7350.0f}},
{{ 1147.1f, 1083.3f, 975.0f},{ 2294.1f, 2166.7f, 1950.0f},{ 4803.9f, 4537.0f, 4083.3f},{ 9607.8f, 9074.1f, 8166.7f}}
}
};
/*
* Calculates 802.11ax HE SU data rate corresponding to a given 802.11ax MCS index,
* bandwidth, and guard interval.
*/
static float ieee80211_he_ofdm_rate(guint nsts, guint mcs, guint bw, guint gi)
{
float rate=0.0;
if ( ((nsts-1) < HE_MAX_NSTS) && (mcs < HE_MAX_MCS) && ( bw < HE_SU_MAX_BW) && ( gi < HE_MAX_GI ) ) {
rate = he_ofdm_tab[nsts-1][mcs][bw][gi];
}
return rate;
}
/*
* HE MU OFDMA MCS rate table converted from http://mcsindex.com/
* indexed by (NSTS,MCS,RU,GI)
*/
#define HE_MU_MAX_RU 6
static float he_mu_ofdma_tab[HE_MAX_NSTS][HE_MAX_MCS][HE_MU_MAX_RU][HE_MAX_GI] = {
{
{{ 0.9f, 0.8f, 0.8f},{ 1.8f, 1.7f, 1.5f},{ 3.8f, 3.5f, 3.2f},{ 8.6f, 8.1f, 7.3f},{ 17.2f, 16.3f, 14.6f},{ 36.0f, 34.0f, 30.6f}},
{{ 1.8f, 1.7f, 1.5f},{ 3.5f, 3.3f, 3.0f},{ 7.5f, 7.1f, 6.4f},{ 17.2f, 16.3f, 14.6f},{ 34.4f, 32.5f, 29.3f},{ 72.1f, 68.1f, 61.3f}},
{{ 2.6f, 2.5f, 2.3f},{ 5.3f, 5.0f, 4.5f},{ 11.3f, 10.6f, 9.6f},{ 25.8f, 24.4f, 21.9f},{ 51.6f, 48.8f, 43.9f},{ 108.1f, 102.1f, 91.9f}},
{{ 3.5f, 3.3f, 3.0f},{ 7.1f, 6.7f, 6.0f},{ 15.0f, 14.2f, 12.8f},{ 34.4f, 32.5f, 29.3f},{ 68.8f, 65.0f, 58.5f},{ 144.1f, 136.1f, 122.5f}},
{{ 5.3f, 5.0f, 4.5f},{ 10.6f, 10.0f, 9.0f},{ 22.5f, 21.3f, 19.1f},{ 51.6f, 48.8f, 43.9f},{ 103.2f, 97.5f, 87.8f},{ 216.2f, 204.2f, 183.8f}},
{{ 7.1f, 6.7f, 6.0f},{ 14.1f, 13.3f, 12.0f},{ 30.0f, 28.3f, 25.5f},{ 68.8f, 65.0f, 58.5f},{ 137.6f, 130.0f, 117.0f},{ 288.2f, 272.2f, 245.0f}},
{{ 7.9f, 7.5f, 6.8f},{ 15.9f, 15.0f, 13.5f},{ 33.8f, 31.9f, 28.7f},{ 77.4f, 73.1f, 65.8f},{ 154.9f, 146.3f, 131.6f},{ 324.3f, 306.3f, 275.6f}},
{{ 8.8f, 8.3f, 7.5f},{ 17.6f, 16.7f, 15.0f},{ 37.5f, 35.4f, 31.9f},{ 86.0f, 81.3f, 73.1f},{ 172.1f, 162.5f, 146.3f},{ 360.3f, 340.3f, 306.3f}},
{{ 10.6f, 10.0f, 9.0f},{ 21.2f, 20.0f, 18.0f},{ 45.0f, 42.5f, 38.3f},{ 103.2f, 97.5f, 87.8f},{ 206.5f, 195.0f, 175.5f},{ 432.4f, 408.3f, 367.5f}},
{{ 11.8f, 11.1f, 10.0f},{ 23.5f, 22.2f, 20.0f},{ 50.0f, 47.2f, 42.5f},{ 114.7f, 108.3f, 97.5f},{ 229.4f, 216.7f, 195.0f},{ 480.4f, 453.7f, 408.3f}},
{{ 13.2f, 12.5f, 11.3f},{ 26.5f, 25.0f, 22.5f},{ 56.3f, 53.1f, 47.8f},{ 129.0f, 121.9f, 109.7f},{ 258.1f, 243.8f, 219.4f},{ 540.4f, 510.4f, 459.4f}},
{{ 14.7f, 13.9f, 12.5f},{ 29.4f, 27.8f, 25.0f},{ 62.5f, 59.0f, 53.1f},{ 143.4f, 135.4f, 121.9f},{ 286.8f, 270.8f, 243.8f},{ 600.5f, 567.1f, 510.4f}}
},{
{{ 1.8f, 1.7f, 1.5f},{ 3.5f, 3.3f, 3.0f},{ 7.5f, 7.1f, 6.4f},{ 17.2f, 16.3f, 14.6f},{ 34.4f, 32.5f, 29.3f},{ 72.1f, 68.1f, 61.3f}},
{{ 3.5f, 3.3f, 3.0f},{ 7.1f, 6.7f, 6.0f},{ 15.0f, 14.2f, 12.8f},{ 34.4f, 32.5f, 29.3f},{ 68.8f, 65.0f, 58.5f},{ 144.1f, 136.1f, 122.5f}},
{{ 5.3f, 5.0f, 4.5f},{ 10.6f, 10.0f, 9.0f},{ 22.5f, 21.3f, 19.1f},{ 51.6f, 48.8f, 43.9f},{ 103.2f, 97.5f, 87.8f},{ 216.2f, 204.2f, 183.8f}},
{{ 7.1f, 6.7f, 6.0f},{ 14.1f, 13.3f, 12.0f},{ 30.0f, 28.3f, 25.5f},{ 68.8f, 65.0f, 58.5f},{ 137.6f, 130.0f, 117.0f},{ 288.2f, 272.2f, 245.0f}},
{{ 10.6f, 10.0f, 9.0f},{ 21.2f, 20.0f, 18.0f},{ 45.0f, 42.5f, 38.3f},{ 103.2f, 97.5f, 87.8f},{ 206.5f, 195.0f, 175.5f},{ 432.4f, 408.3f, 367.5f}},
{{ 14.1f, 13.3f, 12.0f},{ 28.2f, 26.7f, 24.0f},{ 60.0f, 56.7f, 51.0f},{ 137.6f, 130.0f, 117.0f},{ 275.3f, 260.0f, 234.0f},{ 576.5f, 544.4f, 490.0f}},
{{ 15.9f, 15.0f, 13.5f},{ 31.8f, 30.0f, 27.0f},{ 67.5f, 63.8f, 57.4f},{ 154.9f, 146.3f, 131.6f},{ 309.7f, 292.5f, 263.3f},{ 648.5f, 612.5f, 551.3f}},
{{ 17.6f, 16.7f, 15.0f},{ 35.3f, 33.3f, 30.0f},{ 75.0f, 70.8f, 63.8f},{ 172.1f, 162.5f, 146.3f},{ 344.1f, 325.0f, 292.5f},{ 720.6f, 680.6f, 612.5f}},
{{ 21.2f, 20.0f, 18.0f},{ 42.4f, 40.0f, 36.0f},{ 90.0f, 85.0f, 76.5f},{ 206.5f, 195.0f, 175.5f},{ 412.9f, 390.0f, 351.0f},{ 864.7f, 816.7f, 735.0f}},
{{ 23.5f, 22.2f, 20.0f},{ 47.1f, 44.4f, 40.0f},{ 100.0f, 94.4f, 85.0f},{ 229.4f, 216.7f, 195.0f},{ 458.8f, 433.3f, 390.0f},{ 960.8f, 907.4f, 816.7f}},
{{ 26.5f, 25.0f, 22.5f},{ 52.9f, 50.0f, 45.0f},{ 112.5f, 106.3f, 95.6f},{ 258.1f, 243.8f, 219.4f},{ 516.2f, 487.5f, 438.8f},{ 1080.9f, 1020.8f, 918.8f}},
{{ 29.4f, 27.8f, 25.0f},{ 58.8f, 55.6f, 50.0f},{ 125.0f, 118.1f, 106.3f},{ 286.8f, 270.8f, 243.8f},{ 573.5f, 541.7f, 487.5f},{ 1201.0f, 1134.3f, 1020.8f}}
},{
{{ 2.6f, 2.5f, 2.3f},{ 5.3f, 5.0f, 4.5f},{ 11.3f, 10.6f, 9.6f},{ 25.8f, 24.4f, 21.9f},{ 51.6f, 48.8f, 43.9f},{ 108.1f, 102.1f, 91.9f}},
{{ 5.3f, 5.0f, 4.5f},{ 10.6f, 10.0f, 9.0f},{ 22.5f, 21.3f, 19.1f},{ 51.6f, 48.8f, 43.9f},{ 103.2f, 97.5f, 87.8f},{ 216.2f, 204.2f, 183.8f}},
{{ 7.9f, 7.5f, 6.8f},{ 15.9f, 15.0f, 13.5f},{ 33.8f, 31.9f, 28.7f},{ 77.4f, 73.1f, 65.8f},{ 154.9f, 146.3f, 131.6f},{ 324.3f, 306.3f, 275.6f}},
{{ 10.6f, 10.0f, 9.0f},{ 21.2f, 20.0f, 18.0f},{ 45.0f, 42.5f, 38.3f},{ 103.2f, 97.5f, 87.8f},{ 206.5f, 195.0f, 175.5f},{ 432.4f, 408.3f, 367.5f}},
{{ 15.9f, 15.0f, 13.5f},{ 31.8f, 30.0f, 27.0f},{ 67.5f, 63.8f, 57.4f},{ 154.9f, 146.3f, 131.6f},{ 309.7f, 292.5f, 263.3f},{ 648.5f, 612.5f, 551.3f}},
{{ 21.2f, 20.0f, 18.0f},{ 42.4f, 40.0f, 36.0f},{ 90.0f, 85.0f, 76.5f},{ 206.5f, 195.0f, 175.5f},{ 412.9f, 390.0f, 351.0f},{ 864.7f, 816.7f, 735.0f}},
{{ 23.8f, 22.5f, 20.3f},{ 47.6f, 45.0f, 40.5f},{ 101.3f, 95.6f, 86.1f},{ 232.3f, 219.4f, 197.4f},{ 464.6f, 438.8f, 394.9f},{ 972.8f, 918.8f, 826.9f}},
{{ 26.5f, 25.0f, 22.5f},{ 52.9f, 50.0f, 45.0f},{ 112.5f, 106.3f, 95.6f},{ 258.1f, 243.8f, 219.4f},{ 516.2f, 487.5f, 438.8f},{ 1080.9f, 1020.8f, 918.8f}},
{{ 31.8f, 30.0f, 27.0f},{ 63.5f, 60.0f, 54.0f},{ 135.0f, 127.5f, 114.8f},{ 309.7f, 292.5f, 263.3f},{ 619.4f, 585.0f, 526.5f},{ 1297.1f, 1225.0f, 1102.5f}},
{{ 35.3f, 33.3f, 30.0f},{ 70.6f, 66.7f, 60.0f},{ 150.0f, 141.7f, 127.5f},{ 344.1f, 325.0f, 292.5f},{ 688.2f, 650.0f, 585.0f},{ 1441.2f, 1361.1f, 1225.0f}},
{{ 39.7f, 37.5f, 33.8f},{ 79.4f, 75.0f, 67.5f},{ 168.8f, 159.4f, 143.4f},{ 387.1f, 365.6f, 329.1f},{ 774.3f, 731.3f, 658.1f},{ 1621.3f, 1531.3f, 1378.1f}},
{{ 44.1f, 41.7f, 37.5f},{ 88.2f, 83.3f, 75.0f},{ 187.5f, 177.1f, 159.4f},{ 430.1f, 406.3f, 365.6f},{ 860.3f, 812.5f, 731.3f},{ 1801.5f, 1701.4f, 1531.3f}}
},{
{{ 3.5f, 3.3f, 3.0f},{ 7.1f, 6.7f, 6.0f},{ 15.0f, 14.2f, 12.8f},{ 34.4f, 32.5f, 29.3f},{ 68.8f, 65.0f, 58.5f},{ 144.1f, 136.1f, 122.5f}},
{{ 7.1f, 6.7f, 6.0f},{ 14.1f, 13.3f, 12.0f},{ 30.0f, 28.3f, 25.5f},{ 68.8f, 65.0f, 58.5f},{ 137.6f, 130.0f, 117.0f},{ 288.2f, 272.2f, 245.0f}},
{{ 10.6f, 10.0f, 9.0f},{ 21.2f, 20.0f, 18.0f},{ 45.0f, 42.5f, 38.3f},{ 103.2f, 97.5f, 87.8f},{ 206.5f, 195.0f, 175.5f},{ 432.4f, 408.3f, 367.5f}},
{{ 14.1f, 13.3f, 12.0f},{ 28.2f, 26.7f, 24.0f},{ 60.0f, 56.7f, 51.0f},{ 137.6f, 130.0f, 117.0f},{ 275.3f, 260.0f, 234.0f},{ 576.5f, 544.4f, 490.0f}},
{{ 21.2f, 20.0f, 18.0f},{ 42.4f, 40.0f, 36.0f},{ 90.0f, 85.0f, 76.5f},{ 206.5f, 195.0f, 175.5f},{ 412.9f, 390.0f, 351.0f},{ 864.7f, 816.7f, 735.0f}},
{{ 28.2f, 26.7f, 24.0f},{ 56.5f, 53.3f, 48.0f},{ 120.0f, 113.3f, 102.0f},{ 275.3f, 260.0f, 234.0f},{ 550.6f, 520.0f, 468.0f},{ 1152.9f, 1088.9f, 980.0f}},
{{ 31.8f, 30.0f, 27.0f},{ 63.5f, 60.0f, 54.0f},{ 135.0f, 127.5f, 114.8f},{ 309.7f, 292.5f, 263.3f},{ 619.4f, 585.0f, 526.5f},{ 1297.1f, 1225.0f, 1102.5f}},
{{ 35.3f, 33.3f, 30.0f},{ 70.6f, 66.7f, 60.0f},{ 150.0f, 141.7f, 127.5f},{ 344.1f, 325.0f, 292.5f},{ 688.2f, 650.0f, 585.0f},{ 1441.2f, 1361.1f, 1225.0f}},
{{ 42.4f, 40.0f, 36.0f},{ 84.7f, 80.0f, 72.0f},{ 180.0f, 170.0f, 153.0f},{ 412.9f, 390.0f, 351.0f},{ 825.9f, 780.0f, 702.0f},{ 1729.4f, 1633.3f, 1470.0f}},
{{ 47.1f, 44.4f, 40.0f},{ 94.1f, 88.9f, 80.0f},{ 200.0f, 188.9f, 170.0f},{ 458.8f, 433.3f, 390.0f},{ 917.6f, 866.7f, 780.0f},{ 1921.6f, 1814.8f, 1633.3f}},
{{ 52.9f, 50.0f, 45.0f},{ 105.9f, 100.0f, 90.0f},{ 225.0f, 212.5f, 191.3f},{ 516.2f, 487.5f, 438.8f},{ 1032.4f, 975.0f, 877.5f},{ 2161.8f, 2041.7f, 1837.5f}},
{{ 58.8f, 55.6f, 50.0f},{ 117.6f, 111.1f, 100.0f},{ 250.0f, 236.1f, 212.5f},{ 573.5f, 541.7f, 487.5f},{ 1147.1f, 1083.3f, 975.0f},{ 2402.0f, 2268.5f, 2041.7f}}
},{
{{ 4.4f, 4.2f, 3.8f},{ 8.8f, 8.3f, 7.5f},{ 18.8f, 17.7f, 15.9f},{ 43.0f, 40.6f, 36.6f},{ 86.0f, 81.3f, 73.1f},{ 180.1f, 170.1f, 153.1f}},
{{ 8.8f, 8.3f, 7.5f},{ 17.6f, 16.7f, 15.0f},{ 37.5f, 35.4f, 31.9f},{ 86.0f, 81.3f, 73.1f},{ 172.1f, 162.5f, 146.3f},{ 360.3f, 340.3f, 306.3f}},
{{ 13.2f, 12.5f, 11.3f},{ 26.5f, 25.0f, 22.5f},{ 56.3f, 53.1f, 47.8f},{ 129.0f, 121.9f, 109.7f},{ 258.1f, 243.8f, 219.4f},{ 540.4f, 510.4f, 459.4f}},
{{ 17.6f, 16.7f, 15.0f},{ 35.3f, 33.3f, 30.0f},{ 75.0f, 70.8f, 63.8f},{ 172.1f, 162.5f, 146.3f},{ 344.1f, 325.0f, 292.5f},{ 720.6f, 680.6f, 612.5f}},
{{ 26.5f, 25.0f, 22.5f},{ 52.9f, 50.0f, 45.0f},{ 112.5f, 106.3f, 95.6f},{ 258.1f, 243.8f, 219.4f},{ 516.2f, 487.5f, 438.8f},{ 1080.9f, 1020.8f, 918.8f}},
{{ 35.3f, 33.3f, 30.0f},{ 70.6f, 66.7f, 60.0f},{ 150.0f, 141.7f, 127.5f},{ 344.1f, 325.0f, 292.5f},{ 688.2f, 650.0f, 585.0f},{ 1441.2f, 1361.1f, 1225.0f}},
{{ 39.7f, 37.5f, 33.8f},{ 79.4f, 75.0f, 67.5f},{ 168.8f, 159.4f, 143.4f},{ 387.1f, 365.6f, 329.1f},{ 774.3f, 731.3f, 658.1f},{ 1621.3f, 1531.3f, 1378.1f}},
{{ 44.1f, 41.7f, 37.5f},{ 88.2f, 83.3f, 75.0f},{ 187.5f, 177.1f, 159.4f},{ 430.1f, 406.3f, 365.6f},{ 860.3f, 812.5f, 731.3f},{ 1801.5f, 1701.4f, 1531.3f}},
{{ 52.9f, 50.0f, 45.0f},{ 105.9f, 100.0f, 90.0f},{ 225.0f, 212.5f, 191.3f},{ 516.2f, 487.5f, 438.8f},{ 1032.4f, 975.0f, 877.5f},{ 2161.8f, 2041.7f, 1837.5f}},
{{ 58.8f, 55.6f, 50.0f},{ 117.6f, 111.1f, 100.0f},{ 250.0f, 236.1f, 212.5f},{ 573.5f, 541.7f, 487.5f},{ 1147.1f, 1083.3f, 975.0f},{ 2402.0f, 2268.5f, 2041.7f}},
{{ 66.2f, 62.5f, 56.3f},{ 132.4f, 125.0f, 112.5f},{ 281.3f, 265.6f, 239.1f},{ 645.2f, 609.4f, 548.4f},{ 1290.4f, 1218.8f, 1096.9f},{ 2702.2f, 2552.1f, 2296.9f}},
{{ 73.5f, 69.4f, 62.5f},{ 147.1f, 138.9f, 125.0f},{ 312.5f, 295.1f, 265.6f},{ 716.9f, 677.1f, 609.4f},{ 1433.8f, 1354.2f, 1218.8f},{ 3002.5f, 2835.6f, 2552.1f}}
},{
{{ 5.3f, 5.0f, 4.5f},{ 10.6f, 10.0f, 9.0f},{ 22.5f, 21.3f, 19.1f},{ 51.6f, 48.8f, 43.9f},{ 103.2f, 97.5f, 87.8f},{ 216.2f, 204.2f, 183.8f}},
{{ 10.6f, 10.0f, 9.0f},{ 21.2f, 20.0f, 18.0f},{ 45.0f, 42.5f, 38.3f},{ 103.2f, 97.5f, 87.8f},{ 206.5f, 195.0f, 175.5f},{ 432.4f, 408.3f, 367.5f}},
{{ 15.9f, 15.0f, 13.5f},{ 31.8f, 30.0f, 27.0f},{ 67.5f, 63.8f, 57.4f},{ 154.9f, 146.3f, 131.6f},{ 309.7f, 292.5f, 263.3f},{ 648.5f, 612.5f, 551.3f}},
{{ 21.2f, 20.0f, 18.0f},{ 42.4f, 40.0f, 36.0f},{ 90.0f, 85.0f, 76.5f},{ 206.5f, 195.0f, 175.5f},{ 412.9f, 390.0f, 351.0f},{ 864.7f, 816.7f, 735.0f}},
{{ 31.8f, 30.0f, 27.0f},{ 63.5f, 60.0f, 54.0f},{ 135.0f, 127.5f, 114.8f},{ 309.7f, 292.5f, 263.3f},{ 619.4f, 585.0f, 526.5f},{ 1297.1f, 1225.0f, 1102.5f}},
{{ 42.4f, 40.0f, 36.0f},{ 84.7f, 80.0f, 72.0f},{ 180.0f, 170.0f, 153.0f},{ 412.9f, 390.0f, 351.0f},{ 825.9f, 780.0f, 702.0f},{ 1729.4f, 1633.3f, 1470.0f}},
{{ 47.6f, 45.0f, 40.5f},{ 95.3f, 90.0f, 81.0f},{ 202.5f, 191.3f, 172.1f},{ 464.6f, 438.8f, 394.9f},{ 929.1f, 877.5f, 789.8f},{ 1945.6f, 1837.5f, 1653.8f}},
{{ 52.9f, 50.0f, 45.0f},{ 105.9f, 100.0f, 90.0f},{ 225.0f, 212.5f, 191.3f},{ 516.2f, 487.5f, 438.8f},{ 1032.4f, 975.0f, 877.5f},{ 2161.8f, 2041.7f, 1837.5f}},
{{ 63.5f, 60.0f, 54.0f},{ 127.1f, 120.0f, 108.0f},{ 270.0f, 255.0f, 229.5f},{ 619.4f, 585.0f, 526.5f},{ 1238.8f, 1170.0f, 1053.0f},{ 2594.1f, 2450.0f, 2205.0f}},
{{ 70.6f, 66.7f, 60.0f},{ 141.2f, 133.3f, 120.0f},{ 300.0f, 283.3f, 255.0f},{ 688.2f, 650.0f, 585.0f},{ 1376.5f, 1300.0f, 1170.0f},{ 2882.4f, 2722.2f, 2450.0f}},
{{ 79.4f, 75.0f, 67.5f},{ 158.8f, 150.0f, 135.0f},{ 337.5f, 318.8f, 286.9f},{ 774.3f, 731.3f, 658.1f},{ 1548.5f, 1462.5f, 1316.3f},{ 3242.6f, 3062.5f, 2756.3f}},
{{ 88.2f, 83.3f, 75.0f},{ 176.5f, 166.7f, 150.0f},{ 375.0f, 354.2f, 318.8f},{ 860.3f, 812.5f, 731.3f},{ 1720.6f, 1625.0f, 1462.5f},{ 3602.9f, 3402.8f, 3062.5f}}
},{
{{ 6.2f, 5.8f, 5.3f},{ 12.4f, 11.7f, 10.5f},{ 26.3f, 24.8f, 22.3f},{ 60.2f, 56.9f, 51.2f},{ 120.4f, 113.8f, 102.4f},{ 252.2f, 238.2f, 214.4f}},
{{ 12.4f, 11.7f, 10.5f},{ 24.7f, 23.3f, 21.0f},{ 52.5f, 49.6f, 44.6f},{ 120.4f, 113.8f, 102.4f},{ 240.9f, 227.5f, 204.8f},{ 504.4f, 476.4f, 428.8f}},
{{ 18.5f, 17.5f, 15.8f},{ 37.1f, 35.0f, 31.5f},{ 78.8f, 74.4f, 66.9f},{ 180.7f, 170.6f, 153.6f},{ 361.3f, 341.3f, 307.1f},{ 756.6f, 714.6f, 643.1f}},
{{ 24.7f, 23.3f, 21.0f},{ 49.4f, 46.7f, 42.0f},{ 105.0f, 99.2f, 89.3f},{ 240.9f, 227.5f, 204.8f},{ 481.8f, 455.0f, 409.5f},{ 1008.8f, 952.8f, 857.5f}},
{{ 37.1f, 35.0f, 31.5f},{ 74.1f, 70.0f, 63.0f},{ 157.5f, 148.8f, 133.9f},{ 361.3f, 341.3f, 307.1f},{ 722.6f, 682.5f, 614.3f},{ 1513.2f, 1429.2f, 1286.3f}},
{{ 49.4f, 46.7f, 42.0f},{ 98.8f, 93.3f, 84.0f},{ 210.0f, 198.3f, 178.5f},{ 481.8f, 455.0f, 409.5f},{ 963.5f, 910.0f, 819.0f},{ 2017.6f, 1905.6f, 1715.0f}},
{{ 55.6f, 52.5f, 47.3f},{ 111.2f, 105.0f, 94.5f},{ 236.3f, 223.1f, 200.8f},{ 542.0f, 511.9f, 460.7f},{ 1084.0f, 1023.8f, 921.4f},{ 2269.9f, 2143.8f, 1929.4f}},
{{ 61.8f, 58.3f, 52.5f},{ 123.5f, 116.7f, 105.0f},{ 262.5f, 247.9f, 223.1f},{ 602.2f, 568.8f, 511.9f},{ 1204.4f, 1137.5f, 1023.8f},{ 2522.1f, 2381.9f, 2143.8f}},
{{ 74.1f, 70.0f, 63.0f},{ 148.2f, 140.0f, 126.0f},{ 315.0f, 297.5f, 267.8f},{ 722.6f, 682.5f, 614.3f},{ 1445.3f, 1365.0f, 1228.5f},{ 3026.5f, 2858.3f, 2572.5f}},
{{ 82.4f, 77.8f, 70.0f},{ 164.7f, 155.6f, 140.0f},{ 350.0f, 330.6f, 297.5f},{ 802.9f, 758.3f, 682.5f},{ 1605.9f, 1516.7f, 1365.0f},{ 3362.7f, 3175.9f, 2858.3f}},
{{ 92.6f, 87.5f, 78.8f},{ 185.3f, 175.0f, 157.5f},{ 393.8f, 371.9f, 334.7f},{ 903.3f, 853.1f, 767.8f},{ 1806.6f, 1706.3f, 1535.6f},{ 3783.1f, 3572.9f, 3215.6f}},
{{ 102.9f, 97.2f, 87.5f},{ 205.9f, 194.4f, 175.0f},{ 437.5f, 413.2f, 371.9f},{ 1003.7f, 947.9f, 853.1f},{ 2007.4f, 1895.8f, 1706.3f},{ 4203.4f, 3969.9f, 3572.9f}}
},{
{{ 7.1f, 6.7f, 6.0f},{ 14.1f, 13.3f, 12.0f},{ 30.0f, 28.3f, 25.5f},{ 68.8f, 65.0f, 58.5f},{ 137.6f, 130.0f, 117.0f},{ 288.2f, 272.2f, 245.0f}},
{{ 14.1f, 13.3f, 12.0f},{ 28.2f, 26.7f, 24.0f},{ 60.0f, 56.7f, 51.0f},{ 137.6f, 130.0f, 117.0f},{ 275.3f, 260.0f, 234.0f},{ 576.5f, 544.4f, 490.0f}},
{{ 21.2f, 20.0f, 18.0f},{ 42.4f, 40.0f, 36.0f},{ 90.0f, 85.0f, 76.5f},{ 206.5f, 195.0f, 175.5f},{ 412.9f, 390.0f, 351.0f},{ 864.7f, 816.7f, 735.0f}},
{{ 28.2f, 26.7f, 24.0f},{ 56.5f, 53.3f, 48.0f},{ 120.0f, 113.3f, 102.0f},{ 275.3f, 260.0f, 234.0f},{ 550.6f, 520.0f, 468.0f},{ 1152.9f, 1088.9f, 980.0f}},
{{ 42.4f, 40.0f, 36.0f},{ 84.7f, 80.0f, 72.0f},{ 180.0f, 170.0f, 153.0f},{ 412.9f, 390.0f, 351.0f},{ 825.9f, 780.0f, 702.0f},{ 1729.4f, 1633.3f, 1470.0f}},
{{ 56.5f, 53.3f, 48.0f},{ 112.9f, 106.7f, 96.0f},{ 240.0f, 226.7f, 204.0f},{ 550.6f, 520.0f, 468.0f},{ 1101.2f, 1040.0f, 936.0f},{ 2305.9f, 2177.8f, 1960.0f}},
{{ 63.5f, 60.0f, 54.0f},{ 127.1f, 120.0f, 108.0f},{ 270.0f, 255.0f, 229.5f},{ 619.4f, 585.0f, 526.5f},{ 1238.8f, 1170.0f, 1053.0f},{ 2594.1f, 2450.0f, 2205.0f}},
{{ 70.6f, 66.7f, 60.0f},{ 141.2f, 133.3f, 120.0f},{ 300.0f, 283.3f, 255.0f},{ 688.2f, 650.0f, 585.0f},{ 1376.5f, 1300.0f, 1170.0f},{ 2882.4f, 2722.2f, 2450.0f}},
{{ 84.7f, 80.0f, 72.0f},{ 169.4f, 160.0f, 144.0f},{ 360.0f, 340.0f, 306.0f},{ 825.9f, 780.0f, 702.0f},{ 1651.8f, 1560.0f, 1404.0f},{ 3458.8f, 3266.7f, 2940.0f}},
{{ 94.1f, 88.9f, 80.0f},{ 188.2f, 177.8f, 160.0f},{ 400.0f, 377.8f, 340.0f},{ 917.6f, 866.7f, 780.0f},{ 1835.3f, 1733.3f, 1560.0f},{ 3843.1f, 3629.6f, 3266.7f}},
{{ 105.9f, 100.0f, 90.0f},{ 211.8f, 200.0f, 180.0f},{ 450.0f, 425.0f, 382.5f},{ 1032.4f, 975.0f, 877.5f},{ 2064.7f, 1950.0f, 1755.0f},{ 4323.5f, 4083.3f, 3675.0f}},
{{ 117.6f, 111.1f, 100.0f},{ 235.3f, 222.2f, 200.0f},{ 500.0f, 472.2f, 425.0f},{ 1147.1f, 1083.3f, 975.0f},{ 2294.1f, 2166.7f, 1950.0f},{ 4803.9f, 4537.0f, 4083.3f}}
}
};
/*
* Calculates 802.11ax HE SU data rate corresponding to a given 802.11ax MCS index,
* bandwidth, and guard interval.
*/
static float ieee80211_he_mu_ofdma_rate(guint nsts, guint mcs, guint ru, guint gi)
{
float rate=0.0;
if ( ((nsts-1) < HE_MAX_NSTS) && (mcs < HE_MAX_MCS) && ( (ru-4) < HE_MU_MAX_RU) && ( gi < HE_MAX_GI ) ) {
rate = he_mu_ofdma_tab[nsts-1][mcs][ru-4][gi];
}
return rate;
}
static gint ett_wlan_radio = -1;
static gint ett_wlan_radio_11ac_user = -1;
static gint ett_wlan_radio_duration = -1;
static gint ett_wlan_radio_aggregate = -1;
/* previous frame details, for aggregate detection */
struct previous_frame_info {
gboolean has_tsf_timestamp;
guint64 tsf_timestamp;
guint phy;
union ieee_802_11_phy_info phy_info;
guint prev_length;
struct wlan_radio *radio_info;
};
static struct previous_frame_info previous_frame;
static struct aggregate *current_aggregate;
static wmem_list_t *agg_tracker_list;
static guint calculate_11n_duration(guint frame_length,
struct ieee_802_11n* info_n,
int stbc_streams)
{
guint bits;
guint bits_per_symbol;
guint Mstbc;
guint symbols;
/* data field calculation */
if (1) {
/* see ieee80211n-2009 20.3.11 (20-32) - for BCC FEC */
bits = 8 * frame_length + 16 + ieee80211_ht_Nes[info_n->mcs_index] * 6;
Mstbc = stbc_streams ? 2 : 1;
bits_per_symbol = ieee80211_ht_Dbps[info_n->mcs_index] *
(info_n->bandwidth == PHDR_802_11_BANDWIDTH_40_MHZ ? 2 : 1);
symbols = bits / (bits_per_symbol * Mstbc);
} else {
/* TODO: handle LDPC FEC, it changes the rounding */
}
/* round up to whole symbols */
if ((bits % (bits_per_symbol * Mstbc)) > 0)
symbols++;
symbols *= Mstbc;
return (symbols * (info_n->short_gi ? 36 : 40) + 5) / 10;
}
/* TODO: this is a crude quick hack, need proper calculation of bits/symbols/FEC/etc */
static guint calculate_11ac_duration(guint frame_length, float data_rate)
{
guint bits = 8 * frame_length + 16;
return (guint) (bits / data_rate);
}
static void adjust_agg_tsf(gpointer data, gpointer user_data)
{
struct wlan_radio *wlan_radio_info = (struct wlan_radio *)data;
guint64 *ppdu_start = (guint64 *)user_data;
wlan_radio_info->start_tsf += (*ppdu_start);
wlan_radio_info->end_tsf += (*ppdu_start);
if (wlan_radio_info->prior_aggregate_data == 0)
wlan_radio_info->ifs += (*ppdu_start);
}
/*
* Dissect 802.11 pseudo-header containing radio information.
*/
static void
dissect_wlan_radio_phdr(tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree, struct ieee_802_11_phdr *phdr)
{
proto_item *ti;
proto_tree *radio_tree;
float data_rate = 0.0f;
gboolean have_data_rate = FALSE;
gboolean has_short_preamble = FALSE;
gboolean short_preamble = TRUE;
guint bandwidth = 0;
gboolean can_calculate_rate = FALSE;
proto_item *p_item;
guint frame_length = tvb_reported_length(tvb); /* length of 802.11 frame data */
/* durations in microseconds */
guint preamble = 0, agg_preamble = 0; /* duration of plcp */
gboolean have_duration = FALSE;
guint duration = 0; /* duration of whole frame (plcp + mac data + any trailing parts) */
guint prior_duration = 0; /* duration of previous part of aggregate */
struct wlan_radio *wlan_radio_info;
int phy = phdr->phy;
union ieee_802_11_phy_info *phy_info = &phdr->phy_info;
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;
}
/* this is the first time we are looking at this frame during a
* capture dissection, so we know the dissection is done in
* frame order (subsequent dissections may be random access) */
if (!pinfo->fd->visited) {
wlan_radio_info = wmem_new0(wmem_file_scope(), struct wlan_radio);
p_add_proto_data(wmem_file_scope(), pinfo, proto_wlan_radio, 0, wlan_radio_info);
/* A-MPDU / aggregate detection
* Different generators need different detection algorithms
* One common pattern is to report all subframes in the aggregate with the same
* tsf, referenced to the start of the AMPDU (Broadcom). Another pattern is to
* report the tsf on the first subframe, then tsf=0 for the rest of the subframes
* (Intel).
* Another pattern is to report TSF = -1 for all frames but the last, and the
* last has the tsf referenced to the end of the PPDU. (QCA)
*/
/* TODO: add code to work around problem with captures from Macbooks where
* aggregate subframes frames with FCS errors sometimes have incorrect
* PHY information.
*/
if (pinfo->fd->num > 1 &&
(phdr->phy == PHDR_802_11_PHY_11N || phdr->phy == PHDR_802_11_PHY_11AC) &&
phdr->phy == previous_frame.phy &&
phdr->has_tsf_timestamp && previous_frame.has_tsf_timestamp &&
(phdr->tsf_timestamp == previous_frame.tsf_timestamp || /* find matching TSFs */
(!current_aggregate && previous_frame.tsf_timestamp && phdr->tsf_timestamp == 0) || /* Intel detect second frame */
(previous_frame.tsf_timestamp == G_MAXUINT64) /* QCA, detect last frame */
)) {
/* we're in an aggregate */
if (!current_aggregate) {
/* this is the second frame in an aggregate
* where we first detect the aggregate */
current_aggregate = wmem_new0(wmem_file_scope(), struct aggregate);
current_aggregate->phy = previous_frame.phy;
current_aggregate->phy_info = previous_frame.phy_info;
/* go back to the first frame in the aggregate,
* and mark it as part of this aggregate */
if (previous_frame.radio_info != NULL)
previous_frame.radio_info->aggregate = current_aggregate;
}
wlan_radio_info->aggregate = current_aggregate;
/* accumulate the length of the prior subframes in the aggregate.
* Round up previous frame length (padding) */
if (previous_frame.prev_length % 4 != 0) {
previous_frame.prev_length = (previous_frame.prev_length | 3) + 1;
}
/* Also add the MPDU delimiter length */
previous_frame.prev_length += 4;
/* TODO: add padding to meet minimum subframe timing constraint */
wlan_radio_info->prior_aggregate_data = previous_frame.prev_length;
previous_frame.prev_length += frame_length;
/* work around macbook/QCA FCS error frame PHY rate bug here
* Some Macbook generators and some QCA generators erroneously report
* low PHY rates for some subframes within an aggregate that have FCS errors.
* All subframes must have the same PHY rate.
* Here we take the highest reported rate for the aggregate. */
switch (phdr->phy) {
case PHDR_802_11_PHY_11N:
{
struct ieee_802_11n *info_n = &phy_info->info_11n;
struct ieee_802_11n *agg_info_n = &current_aggregate->phy_info.info_11n;
if (info_n->has_mcs_index && agg_info_n->has_mcs_index &&
info_n->mcs_index > agg_info_n->mcs_index)
current_aggregate->phy_info = *phy_info;
}
break;
case PHDR_802_11_PHY_11AC:
{
struct ieee_802_11ac *info_ac = &phy_info->info_11ac;
struct ieee_802_11ac *agg_info_ac = &current_aggregate->phy_info.info_11ac;
if (info_ac->mcs[0] > agg_info_ac->mcs[0])
current_aggregate->phy_info = *phy_info;
}
break;
}
/* TODO record a warning if the PHY rate does not match the aggregate */
phy = current_aggregate->phy;
phy_info = &current_aggregate->phy_info;
} else {
current_aggregate = NULL;
previous_frame.prev_length = frame_length;
}
previous_frame.has_tsf_timestamp = phdr->has_tsf_timestamp;
previous_frame.tsf_timestamp = phdr->tsf_timestamp;
previous_frame.phy = phdr->phy;
previous_frame.phy_info = phdr->phy_info;
} else {
/* this frame has already been seen, so get its info structure */
wlan_radio_info = (struct wlan_radio *) p_get_proto_data(wmem_file_scope(), pinfo, proto_wlan_radio, 0);
if (wlan_radio_info && wlan_radio_info->aggregate) {
phy = wlan_radio_info->aggregate->phy;
phy_info = &wlan_radio_info->aggregate->phy_info;
}
}
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 (phy != PHDR_802_11_PHY_UNKNOWN) {
proto_tree_add_uint(radio_tree, hf_wlan_radio_phy, tvb, 0, 0, phy);
switch (phy) {
case PHDR_802_11_PHY_11_FHSS:
{
struct ieee_802_11_fhss *info_fhss = &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 = &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 = &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 = &phy_info->info_11g;
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 = &phy_info->info_11n;
guint bandwidth_40;
/*
* 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;
}
}
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);
}
}
break;
case PHDR_802_11_PHY_11AC:
{
struct ieee_802_11ac *info_ac = &phy_info->info_11ac;
guint i;
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_bandwidth) {
proto_tree_add_uint(radio_tree, hf_wlan_radio_11ac_bandwidth, tvb, 0, 0, info_ac->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 */
} else {
can_calculate_rate = FALSE; /* no bandwidth */
}
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_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);
}
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 &&
info_ac->nss[i] <= MAX_VHT_NSS &&
ieee80211_vhtvalid[info_ac->mcs[i]].valid[bandwidth][info_ac->nss[i]-1]) {
data_rate = ieee80211_vhtrate(info_ac->mcs[i], bandwidth, info_ac->short_gi) * info_ac->nss[i];
if (data_rate != 0.0f) {
have_data_rate = TRUE;
}
}
}
}
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;
case PHDR_802_11_PHY_11AX:
{
struct ieee_802_11ax *info_ax = &phy_info->info_11ax;
if (info_ax->has_gi && info_ax->has_bwru && info_ax->has_mcs_index) {
if (info_ax->bwru < HE_SU_MAX_BW) {
data_rate = ieee80211_he_ofdm_rate(info_ax->nsts,info_ax->mcs,info_ax->bwru,info_ax->gi);
} else {
data_rate = ieee80211_he_mu_ofdma_rate(info_ax->nsts,info_ax->mcs,info_ax->bwru,info_ax->gi);
}
if (data_rate != 0.0f) {
have_data_rate = TRUE;
}
}
}
break;
}
}
if (have_data_rate) {
col_add_fstr(pinfo->cinfo, COL_TX_RATE, "%.1f", data_rate);
proto_tree_add_float_format_value(radio_tree, hf_wlan_radio_data_rate, tvb, 0, 0,
data_rate,
"%.1f Mb/s",
data_rate);
}
if (phdr->has_channel) {
col_add_fstr(pinfo->cinfo, COL_FREQ_CHAN, "%u", phdr->channel);
proto_tree_add_uint(radio_tree, hf_wlan_radio_channel, tvb, 0, 0, phdr->channel);
}
if (phdr->has_frequency) {
col_add_fstr(pinfo->cinfo, COL_FREQ_CHAN, "%u MHz", phdr->frequency);
proto_tree_add_uint(radio_tree, hf_wlan_radio_frequency, tvb, 0, 0, phdr->frequency);
}
if (phdr->has_signal_percent) {
col_add_fstr(pinfo->cinfo, COL_RSSI, "%u%%", phdr->signal_percent);
proto_tree_add_uint(radio_tree, hf_wlan_radio_signal_percent, tvb, 0, 0, phdr->signal_percent);
}
if (phdr->has_signal_db) {
col_add_fstr(pinfo->cinfo, COL_RSSI, "%u dB", phdr->signal_db);
proto_tree_add_uint(radio_tree, hf_wlan_radio_signal_db, tvb, 0, 0, phdr->signal_db);
}
if (phdr->has_signal_dbm) {
col_add_fstr(pinfo->cinfo, COL_RSSI, "%d dBm", phdr->signal_dbm);
proto_tree_add_int(radio_tree, hf_wlan_radio_signal_dbm, tvb, 0, 0, phdr->signal_dbm);
}
if (phdr->has_noise_percent) {
proto_tree_add_uint(radio_tree, hf_wlan_radio_noise_percent, tvb, 0, 0, phdr->noise_percent);
}
if (phdr->has_noise_db) {
proto_tree_add_uint(radio_tree, hf_wlan_radio_noise_db, tvb, 0, 0, phdr->noise_db);
}
if (phdr->has_noise_dbm) {
proto_tree_add_int(radio_tree, hf_wlan_radio_noise_dbm, tvb, 0, 0, phdr->noise_dbm);
}
if (phdr->has_signal_dbm && phdr->has_noise_dbm) {
proto_tree_add_int(radio_tree, hf_wlan_radio_snr, tvb, 0, 0, phdr->signal_dbm - phdr->noise_dbm);
}
/*
* XXX - are the signal and noise in dB from a fixed reference point
* guaranteed to use the *same* fixed reference point? If so, we could
* calculate the SNR if they're both present, too.
*/
if (phdr->has_tsf_timestamp) {
proto_tree_add_uint64(radio_tree, hf_wlan_radio_timestamp, tvb, 0, 0, phdr->tsf_timestamp);
}
if (phdr->has_aggregate_info) {
proto_tree_add_boolean(radio_tree, hf_wlan_last_part_of_a_mpdu, tvb, 0, 0, phdr->aggregate_flags);
proto_tree_add_boolean(radio_tree, hf_wlan_a_mpdu_delim_crc_error, tvb, 0, 0, phdr->aggregate_flags);
proto_tree_add_uint(radio_tree, hf_wlan_a_mpdu_aggregate_id, tvb, 0, 0, phdr->aggregate_id);
}
/* make sure frame_length includes the FCS for accurate duration calculation */
if (pinfo->pseudo_header->ieee_802_11.fcs_len == 0) {
frame_length += 4;
}
if (have_data_rate && data_rate > 0) {
/* duration calculations */
gboolean assumed_short_preamble = FALSE;
gboolean assumed_non_greenfield = FALSE;
gboolean assumed_no_stbc = FALSE;
gboolean assumed_no_extension_streams = FALSE;
gboolean assumed_bcc_fec = FALSE;
/* some generators report CCK frames as 'dynamic-cck-ofdm', which are converted
* into the 11g PHY type, so we need to be smart and recognize which ones are
* DSSS/CCK and which are OFDM. Use the data_rate to do this. */
if (phy == PHDR_802_11_PHY_11G &&
(data_rate == 1.0f || data_rate == 2.0f ||
data_rate == 5.5f || data_rate == 11.0f ||
data_rate == 22.0f || data_rate == 33.0f)) {
phy = PHDR_802_11_PHY_11B;
} else if (phy == PHDR_802_11_PHY_UNKNOWN &&
(data_rate == 1.0f || data_rate == 2.0f ||
data_rate == 5.5f || data_rate == 11.0f ||
data_rate == 22.0f || data_rate == 33.0f)) {
phy = PHDR_802_11_PHY_11B;
} else if (phy == PHDR_802_11_PHY_UNKNOWN &&
(data_rate == 6.0f || data_rate == 9.0f ||
data_rate == 12.0f || data_rate == 18.0f ||
data_rate == 24.0f || data_rate == 36.0f ||
data_rate == 48.0f || data_rate == 54.0f)) {
phy = PHDR_802_11_PHY_11A;
}
switch (phy) {
case PHDR_802_11_PHY_11_FHSS:
/* TODO: preamble/duration calc for FHSS */
break;
case PHDR_802_11_PHY_11B:
if (!has_short_preamble || wlan_radio_always_short_preamble) {
assumed_short_preamble = TRUE;
short_preamble = TRUE;
}
preamble = short_preamble ? 72 + 24 : 144 + 48;
/* calculation of frame duration
* Things we need to know to calculate accurate duration
* 802.11 / 802.11b (DSSS or CCK modulation)
* - length of preamble
* - rate
*/
/* round up to whole microseconds */
have_duration = TRUE;
duration = (guint) ceil(preamble + frame_length * 8 / data_rate);
break;
case PHDR_802_11_PHY_11A:
case PHDR_802_11_PHY_11G:
{
/* OFDM rate */
/* calculation of frame duration
* Things we need to know to calculate accurate duration
* 802.11a / 802.11g (OFDM modulation)
* - rate
*/
/* preamble + signal */
preamble = 16 + 4;
/* 16 service bits, data and 6 tail bits */
guint bits = 16 + 8 * frame_length + 6;
guint symbols = (guint) ceil(bits / (data_rate * 4));
have_duration = TRUE;
duration = preamble + symbols * 4;
break;
}
case PHDR_802_11_PHY_11N:
{
struct ieee_802_11n *info_n = &phy_info->info_11n;
/* We have all the fields required to calculate the duration */
static const guint Nhtdltf[4] = {1, 2, 4, 4};
static const guint Nhteltf[4] = {0, 1, 2, 4};
guint Nsts;
guint stbc_streams;
guint ness;
/*
* If we don't have necessary fields, or if we have them but
* they have invalid values, then bail.
*/
if (!info_n->has_mcs_index ||
info_n->mcs_index > MAX_MCS_INDEX ||
!info_n->has_bandwidth ||
!info_n->has_short_gi)
break;
/* calculation of frame duration
* Things we need to know to calculate accurate duration
* 802.11n / HT
* - whether frame preamble is mixed or greenfield, (assume mixed)
* - guard interval, 800ns or 400ns
* - bandwidth, 20Mhz or 40Mhz
* - MCS index - used with previous 2 to calculate rate
* - how many additional STBC streams are used (assume 0)
* - how many optional extension spatial streams are used (assume 0)
* - whether BCC or LDCP coding is used (assume BCC)
*/
/* preamble duration
* see ieee802.11n-2009 Figure 20-1 - PPDU format
* for HT-mixed format
* L-STF 8us, L-LTF 8us, L-SIG 4us, HT-SIG 8us, HT_STF 4us
* for HT-greenfield
* HT-GF-STF 8us, HT-LTF1 8us, HT_SIG 8us
*/
if (info_n->has_greenfield) {
preamble = info_n->greenfield ? 24 : 32;
} else {
preamble = 32;
assumed_non_greenfield = TRUE;
}
if (info_n->has_stbc_streams) {
stbc_streams = info_n->stbc_streams;
} else {
stbc_streams = 0;
assumed_no_stbc = TRUE;
}
if (info_n->has_ness) {
ness = info_n->ness;
if (ness >= G_N_ELEMENTS(Nhteltf)) {
/* Not valid */
break;
}
} else {
ness = 0;
assumed_no_extension_streams = TRUE;
}
/* calculate number of HT-LTF training symbols.
* see ieee80211n-2009 20.3.9.4.6 table 20-11 */
Nsts = ieee80211_ht_streams[info_n->mcs_index] + stbc_streams;
if (Nsts == 0 || Nsts - 1 >= G_N_ELEMENTS(Nhtdltf)) {
/* Not usable */
break;
}
preamble += 4 * (Nhtdltf[Nsts-1] + Nhteltf[ness]);
if (info_n->has_stbc_streams) {
stbc_streams = info_n->stbc_streams;
} else {
stbc_streams = 0;
assumed_no_stbc = TRUE;
}
if (!info_n->has_ness) {
assumed_no_extension_streams = TRUE;
}
if (!info_n->has_fec) {
assumed_bcc_fec = TRUE;
}
/* data field calculation */
if (wlan_radio_info && wlan_radio_info->aggregate) {
agg_preamble = preamble;
if (wlan_radio_info->prior_aggregate_data != 0) {
preamble = 0;
}
prior_duration = calculate_11n_duration(wlan_radio_info->prior_aggregate_data, info_n, stbc_streams);
have_duration = TRUE;
duration = preamble +
calculate_11n_duration(frame_length + wlan_radio_info->prior_aggregate_data, info_n, stbc_streams)
- prior_duration;
} else {
have_duration = TRUE;
duration = preamble + calculate_11n_duration(frame_length, info_n, stbc_streams);
}
break;
}
case PHDR_802_11_PHY_11AC:
{
struct ieee_802_11ac *info_ac = &phy_info->info_11ac;
if (!info_ac->has_stbc) {
assumed_no_stbc = TRUE;
}
preamble = 32 + 4 * info_ac->nss[0] * (info_ac->has_stbc ? info_ac->stbc+1 : 1);
if (wlan_radio_info && wlan_radio_info->aggregate) {
agg_preamble = preamble;
if (wlan_radio_info->prior_aggregate_data != 0) {
preamble = 0;
}
prior_duration = calculate_11ac_duration(wlan_radio_info->prior_aggregate_data, data_rate);
have_duration = TRUE;
duration = preamble +
calculate_11ac_duration(wlan_radio_info->prior_aggregate_data + frame_length, data_rate)
- prior_duration;
} else {
have_duration = TRUE;
duration = preamble + calculate_11ac_duration(frame_length, data_rate);
}
break;
}
}
if (!pinfo->fd->visited && have_duration && phdr->has_tsf_timestamp) {
if (current_aggregate) {
current_aggregate->duration = agg_preamble + prior_duration + duration;
if (previous_frame.radio_info && previous_frame.radio_info->aggregate == current_aggregate)
previous_frame.radio_info->nav = 0; // don't display NAV except for last frame in an aggregate
}
if (phdr->tsf_timestamp == G_MAXUINT64) {
/* QCA aggregate, we don't know tsf yet */
wlan_radio_info->start_tsf = prior_duration + (current_aggregate ? agg_preamble : 0);
wlan_radio_info->end_tsf = prior_duration + duration + (current_aggregate ? agg_preamble : 0);
if (agg_tracker_list == NULL) {
agg_tracker_list = wmem_list_new(NULL);
}
wmem_list_append(agg_tracker_list, wlan_radio_info);
} else if (current_aggregate && wlan_radio_tsf_at_end && phdr->tsf_timestamp != G_MAXUINT64) {
/* QCA aggregate, last frame */
wlan_radio_info->start_tsf = phdr->tsf_timestamp - duration;
wlan_radio_info->end_tsf = phdr->tsf_timestamp;
/* fix up the tsfs for the prior MPDUs */
if (agg_tracker_list != NULL) {
guint64 ppdu_start = phdr->tsf_timestamp - (prior_duration + duration + agg_preamble);
wmem_list_foreach(agg_tracker_list, adjust_agg_tsf, &ppdu_start);
wmem_destroy_list(agg_tracker_list);
agg_tracker_list = NULL;
};
} else if (wlan_radio_tsf_at_end) {
wlan_radio_info->start_tsf = phdr->tsf_timestamp - duration;
wlan_radio_info->end_tsf = phdr->tsf_timestamp;
} else {
wlan_radio_info->start_tsf = phdr->tsf_timestamp + prior_duration - preamble;
wlan_radio_info->end_tsf = phdr->tsf_timestamp + prior_duration + duration - preamble;
}
if ((pinfo->fd->num > 1) && (previous_frame.radio_info != NULL)) {
/* TODO handle intermediate packets without end_tsf correctly */
wlan_radio_info->ifs = wlan_radio_info->start_tsf - previous_frame.radio_info->end_tsf;
}
if (tvb_captured_length(tvb) >= 4) {
/*
* Duration/ID field.
*/
int nav = tvb_get_letohs(tvb, 2);
if ((nav & 0x8000) == 0) {
/* Duration */
wlan_radio_info->nav = nav;
}
}
if (phdr->has_signal_dbm) {
wlan_radio_info->rssi = phdr->signal_dbm;
if (current_aggregate)
current_aggregate->rssi = phdr->signal_dbm;
}
}
if (have_duration) {
proto_item *item = proto_tree_add_uint(radio_tree, hf_wlan_radio_duration, tvb, 0, 0, duration);
proto_tree *d_tree = proto_item_add_subtree(item, ett_wlan_radio_duration);
proto_item_set_generated(item);
if (assumed_short_preamble)
expert_add_info(pinfo, item, &ei_wlan_radio_assumed_short_preamble);
if (assumed_non_greenfield)
expert_add_info(pinfo, item, &ei_wlan_radio_assumed_non_greenfield);
if (assumed_no_stbc)
expert_add_info(pinfo, item, &ei_wlan_radio_assumed_no_stbc);
if (assumed_no_extension_streams)
expert_add_info(pinfo, item, &ei_wlan_radio_assumed_no_extension_streams);
if (assumed_bcc_fec)
expert_add_info(pinfo, item, &ei_wlan_radio_assumed_bcc_fec);
if (preamble) {
p_item = proto_tree_add_uint(d_tree, hf_wlan_radio_preamble, tvb, 0, 0, preamble);
proto_item_set_generated(p_item);
}
if (wlan_radio_info) {
if (wlan_radio_info->aggregate) {
proto_tree *agg_tree;
p_item = proto_tree_add_none_format(d_tree, hf_wlan_radio_aggregate, tvb, 0, 0,
"This MPDU is part of an A-MPDU");
agg_tree = proto_item_add_subtree(item, ett_wlan_radio_aggregate);
proto_item_set_generated(p_item);
if (wlan_radio_info->aggregate->duration) {
proto_item *aitem = proto_tree_add_uint(agg_tree, hf_wlan_radio_aggregate_duration, tvb, 0, 0,
wlan_radio_info->aggregate->duration);
proto_item_set_generated(aitem);
}
}
if (wlan_radio_info->ifs) {
p_item = proto_tree_add_int64(d_tree, hf_wlan_radio_ifs, tvb, 0, 0, wlan_radio_info->ifs);
proto_item_set_generated(p_item);
/* TODO: warnings on unusual IFS values (too small or negative) */
}
if (wlan_radio_info->start_tsf) {
p_item = proto_tree_add_uint64(d_tree, hf_wlan_radio_start_tsf, tvb, 0, 0, wlan_radio_info->start_tsf);
proto_item_set_generated(p_item);
}
if (wlan_radio_info->end_tsf) {
p_item = proto_tree_add_uint64(d_tree, hf_wlan_radio_end_tsf, tvb, 0, 0, wlan_radio_info->end_tsf);
proto_item_set_generated(p_item);
}
}
}
} /* if (have_data_rate) */
if (phdr->has_zero_length_psdu_type)
proto_tree_add_uint(radio_tree, hf_wlan_zero_length_psdu_type, tvb, 0, 0, phdr->zero_length_psdu_type);
tap_queue_packet(wlan_radio_tap, pinfo, phdr);
if (wlan_radio_timeline_enabled) {
tap_queue_packet(wlan_radio_timeline_tap, pinfo, wlan_radio_info);
}
if (!pinfo->fd->visited) {
previous_frame.radio_info = wlan_radio_info;
}
}
/*
* 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;
dissect_wlan_radio_phdr(tvb, pinfo, tree, phdr);
/* Is there anything there? A 0-length-psdu has no frame data. */
if (phdr->has_zero_length_psdu_type)
return tvb_captured_length(tvb);
/* dissect the 802.11 packet next */
return call_dissector_with_data(ieee80211_handle, tvb, pinfo, tree, data);
}
/*
* Dissect 802.11 with a variable-length link-layer header without qos elements and
* a pseudo-header containing radio information.
*/
static int
dissect_wlan_noqos_radio (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree, void *data)
{
struct ieee_802_11_phdr *phdr = (struct ieee_802_11_phdr *)data;
dissect_wlan_radio_phdr(tvb, pinfo, tree, phdr);
/* Is there anything there? A 0-length-psdu has no frame data. */
if (phdr->has_zero_length_psdu_type)
return tvb_captured_length(tvb);
/* dissect the 802.11 packet next */
return call_dissector_with_data(ieee80211_noqos_handle, tvb, pinfo, tree, data);
}
static void
setup_ieee80211_radio(void)
{
/* start of a new dissection, initialize state variables */
current_aggregate = NULL;
agg_tracker_list = NULL;
memset(&previous_frame, 0, sizeof(previous_frame));
}
static void
cleanup_ieee80211_radio(void)
{
if (agg_tracker_list != NULL) {
wmem_destroy_list(agg_tracker_list);
agg_tracker_list = NULL;
}
}
void proto_register_ieee80211_radio(void)
{
static hf_register_info hf_wlan_radio[] = {
{&hf_wlan_radio_phy,
{"PHY type", "wlan_radio.phy", FT_UINT32, BASE_DEC, VALS(phy_vals), 0,
NULL, HFILL }},
{&hf_wlan_radio_11_fhss_hop_set,
{"Hop set", "wlan_radio.fhss.hop_set", FT_UINT8, BASE_HEX, NULL, 0,
NULL, HFILL }},
{&hf_wlan_radio_11_fhss_hop_pattern,
{"Hop pattern", "wlan_radio.fhss.hop_pattern", FT_UINT8, BASE_HEX, NULL, 0,
NULL, HFILL }},
{&hf_wlan_radio_11_fhss_hop_index,
{"Hop index", "wlan_radio.fhss.hop_index", FT_UINT8, BASE_HEX, NULL, 0,
NULL, HFILL }},
{&hf_wlan_radio_11a_channel_type,
{"Channel type", "wlan_radio.11a.channel_type", FT_UINT32, BASE_DEC, VALS(channel_type_11a_vals), 0,
NULL, HFILL }},
{&hf_wlan_radio_11a_turbo_type,
{"Turbo type", "wlan_radio.11a.turbo_type", FT_UINT32, BASE_DEC, VALS(turbo_type_11a_vals), 0,
NULL, HFILL }},
{&hf_wlan_radio_11g_mode,
{"Proprietary mode", "wlan_radio.11g.mode", FT_UINT32, BASE_DEC, VALS(mode_11g_vals), 0,
NULL, HFILL }},
{&hf_wlan_radio_11n_mcs_index,
{"MCS index", "wlan_radio.11n.mcs_index", FT_UINT32, BASE_DEC, NULL, 0,
"Modulation and Coding Scheme index", HFILL }},
{&hf_wlan_radio_11n_bandwidth,
{"Bandwidth", "wlan_radio.11n.bandwidth", FT_UINT32, BASE_DEC, VALS(bandwidth_vals), 0,
NULL, HFILL }},
{&hf_wlan_radio_11n_short_gi,
{"Short GI", "wlan_radio.11n.short_gi", FT_BOOLEAN, 0, NULL, 0,
NULL, HFILL }},
{&hf_wlan_radio_11n_greenfield,
{"Greenfield", "wlan_radio.11n.greenfield", FT_BOOLEAN, BASE_NONE, NULL, 0,
NULL, HFILL }},
{&hf_wlan_radio_11n_fec,
{"FEC", "wlan_radio.11n.fec", FT_UINT32, BASE_DEC, VALS(fec_vals), 0,
NULL, HFILL }},
{&hf_wlan_radio_11n_stbc_streams,
{"Number of STBC streams", "wlan_radio.11n.stbc_streams", FT_UINT32, BASE_DEC, NULL, 0,
NULL, HFILL }},
{&hf_wlan_radio_11n_ness,
{"Number of extension spatial streams", "wlan_radio.11n.ness", FT_UINT32, BASE_DEC, NULL, 0,
NULL, HFILL }},
{&hf_wlan_radio_11ac_stbc,
{"STBC", "wlan_radio.11ac.stbc", FT_BOOLEAN, 0, TFS(&tfs_on_off), 0x0,
"Space Time Block Coding flag", HFILL }},
{&hf_wlan_radio_11ac_txop_ps_not_allowed,
{"TXOP_PS_NOT_ALLOWED", "wlan_radio_11ac.txop_ps_not_allowed", FT_BOOLEAN, 0, NULL, 0x0,
"Flag indicating whether STAs may doze during TXOP", HFILL }},
{&hf_wlan_radio_11ac_short_gi,
{"Short GI", "wlan_radio.11ac.short_gi", FT_BOOLEAN, 0, NULL, 0,
NULL, HFILL }},
{&hf_wlan_radio_11ac_short_gi_nsym_disambig,
{"Short GI Nsym disambiguation", "wlan_radio.11ac.short_gi_nsym_disambig", FT_BOOLEAN, 0, NULL, 0x0,
"Short Guard Interval Nsym disambiguation", HFILL }},
{&hf_wlan_radio_11ac_ldpc_extra_ofdm_symbol,
{"LDPC extra OFDM symbol", "wlan_radio.11ac.ldpc_extra_ofdm_symbol", FT_BOOLEAN, 0, NULL, 0x0,
NULL, HFILL }},
{&hf_wlan_radio_11ac_beamformed,
{"Beamformed", "wlan_radio.11ac.beamformed", FT_BOOLEAN, 0, NULL, 0x0,
NULL, HFILL }},
{&hf_wlan_radio_11ac_bandwidth,
{"Bandwidth", "wlan_radio.11ac.bandwidth", FT_UINT32, BASE_DEC, VALS(bandwidth_vals), 0,
NULL, HFILL }},
{&hf_wlan_radio_11ac_user,
{"User", "wlan_radio.11ac.user", FT_NONE, BASE_NONE, NULL, 0x0,
NULL, HFILL }},
{&hf_wlan_radio_11ac_nsts,
{"Space-time streams", "wlan_radio.11ac.nsts", FT_UINT32, BASE_DEC, NULL, 0x0,
"Number of Space-time streams", HFILL }},
{&hf_wlan_radio_11ac_mcs,
{"MCS index", "wlan_radio.11ac.mcs", FT_UINT32, BASE_DEC, NULL, 0x0,
"Modulation and Coding Scheme index", HFILL }},
{&hf_wlan_radio_11ac_nss,
{"Spatial streams", "wlan_radio.11ac.nss", FT_UINT32, BASE_DEC, NULL, 0x0,
"Number of spatial streams", HFILL }},
{&hf_wlan_radio_11ac_fec,
{"FEC", "wlan_radio.11ac.fec", FT_UINT32, BASE_DEC, VALS(fec_vals), 0x0,
"Type of FEC", HFILL }},
{&hf_wlan_radio_11ac_gid,
{"Group Id", "wlan_radio.11ac.gid", FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{&hf_wlan_radio_11ac_p_aid,
{"Partial AID", "wlan_radio.11ac.paid", FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{&hf_wlan_radio_data_rate,
{"Data rate", "wlan_radio.data_rate", FT_FLOAT, BASE_NONE, NULL, 0,
"Speed at which this frame was sent/received", HFILL }},
{&hf_wlan_radio_channel,
{"Channel", "wlan_radio.channel", FT_UINT32, BASE_DEC, NULL, 0,
"802.11 channel number that this frame was sent/received on", HFILL }},
{&hf_wlan_radio_frequency,
{"Frequency", "wlan_radio.frequency", FT_UINT16, BASE_DEC|BASE_UNIT_STRING, &units_mhz, 0,
"Center frequency of the 802.11 channel that this frame was sent/received on", HFILL }},
{&hf_wlan_radio_short_preamble,
{"Short preamble", "wlan_radio.short_preamble", FT_BOOLEAN, BASE_NONE, NULL, 0,
NULL, HFILL }},
{&hf_wlan_radio_signal_percent,
{"Signal strength (percentage)", "wlan_radio.signal_percentage", FT_UINT32, BASE_DEC|BASE_UNIT_STRING, &units_percent, 0,
"Signal strength, as percentage of maximum RSSI", HFILL }},
{&hf_wlan_radio_signal_db,
{"Signal strength (dB)", "wlan_radio.signal_db", FT_UINT8, BASE_DEC|BASE_UNIT_STRING, &units_decibels, 0,
NULL, HFILL }},
{&hf_wlan_radio_signal_dbm,
{"Signal strength (dBm)", "wlan_radio.signal_dbm", FT_INT8, BASE_DEC|BASE_UNIT_STRING, &units_dbm, 0,
NULL, HFILL }},
{&hf_wlan_radio_noise_percent,
{"Noise level (percentage)", "wlan_radio.noise_percentage", FT_UINT32, BASE_DEC|BASE_UNIT_STRING, &units_percent, 0,
NULL, HFILL }},
{&hf_wlan_radio_noise_db,
{"Noise level (dB)", "wlan_radio.noise_db", FT_UINT8, BASE_DEC|BASE_UNIT_STRING, &units_decibels, 0,
NULL, HFILL }},
{&hf_wlan_radio_noise_dbm,
{"Noise level (dBm)", "wlan_radio.noise_dbm", FT_INT8, BASE_DEC|BASE_UNIT_STRING, &units_dbm, 0,
NULL, HFILL }},
{&hf_wlan_radio_snr,
{"Signal/noise ratio (dB)", "wlan_radio.snr", FT_INT32, BASE_DEC|BASE_UNIT_STRING, &units_decibels, 0,
NULL, HFILL }},
{&hf_wlan_radio_timestamp,
{"TSF timestamp", "wlan_radio.timestamp", FT_UINT64, BASE_DEC, NULL, 0,
"Timing Synchronization Function timestamp", HFILL }},
{&hf_wlan_last_part_of_a_mpdu,
{"Last part of an A-MPDU", "wlan_radio.last_part_of_an_ampdu", FT_BOOLEAN, 32, NULL, PHDR_802_11_LAST_PART_OF_A_MPDU,
"This is the last part of an A-MPDU", HFILL }},
{&hf_wlan_a_mpdu_delim_crc_error,
{"A-MPDU delimiter CRC error", "wlan_radio.a_mpdu_delim_crc_error", FT_BOOLEAN, 32, NULL, PHDR_802_11_A_MPDU_DELIM_CRC_ERROR,
NULL, HFILL }},
{&hf_wlan_a_mpdu_aggregate_id,
{"A-MPDU aggregate ID", "wlan_radio.a_mpdu_aggregate_id", FT_UINT32, BASE_DEC, NULL, 0,
NULL, HFILL }},
{&hf_wlan_radio_duration,
{"Duration", "wlan_radio.duration", FT_UINT32, BASE_DEC|BASE_UNIT_STRING, &units_microseconds, 0,
"Total duration of the frame in microseconds, including any preamble or plcp header. "
"Calculated from the frame length, modulation and other phy data.", HFILL }},
{&hf_wlan_radio_preamble,
{"Preamble", "wlan_radio.preamble", FT_UINT32, BASE_DEC|BASE_UNIT_STRING, &units_microseconds, 0,
"Duration of the PLCP or preamble in microseconds, calculated from PHY data", HFILL }},
{&hf_wlan_radio_aggregate,
{"A-MPDU", "wlan_radio.aggregate", FT_NONE, BASE_NONE, NULL, 0,
"MPDU is part of an A-MPDU", HFILL }},
{&hf_wlan_radio_ifs,
{"IFS", "wlan_radio.ifs", FT_INT64, BASE_DEC|BASE_UNIT_STRING, &units_microseconds, 0,
"Inter Frame Space before this frame in microseconds, calculated from PHY data", HFILL }},
{&hf_wlan_radio_start_tsf,
{"Start", "wlan_radio.start_tsf", FT_UINT64, BASE_DEC|BASE_UNIT_STRING, &units_microseconds, 0,
"Calculated start time of the frame", HFILL }},
{&hf_wlan_radio_end_tsf,
{"End", "wlan_radio.end_tsf", FT_UINT64, BASE_DEC|BASE_UNIT_STRING, &units_microseconds, 0,
"Calculated end time of the frame", HFILL }},
{&hf_wlan_radio_aggregate_duration,
{"Aggregate Duration", "wlan_radio.aggregate.duration", FT_UINT32, BASE_DEC|BASE_UNIT_STRING, &units_microseconds, 0,
"Total duration of the aggregate in microseconds, including any preamble or plcp header and multiple MPDUs. "
"Calculated from the total subframe lengths, modulation and other phy data, assumes no excess padding.", HFILL }},
{&hf_wlan_zero_length_psdu_type,
{"Zero-length PSDU Type", "wlan_radio.zero_len_psdu.type", FT_UINT8, BASE_HEX, VALS(zero_length_psdu_vals), 0x0,
"Type of zero-length PSDU", HFILL}},
};
static gint *ett[] = {
&ett_wlan_radio,
&ett_wlan_radio_11ac_user,
&ett_wlan_radio_duration,
&ett_wlan_radio_aggregate
};
static ei_register_info ei[] = {
{ &ei_wlan_radio_assumed_short_preamble,
{ "wlan_radio.assumed.short_preamble", PI_ASSUMPTION, PI_WARN,
"No preamble length information was available, assuming short preamble.", EXPFILL }},
{ &ei_wlan_radio_assumed_non_greenfield,
{ "wlan_radio.assumed.non_greenfield", PI_ASSUMPTION, PI_WARN,
"No plcp type information was available, assuming non greenfield.", EXPFILL }},
{ &ei_wlan_radio_assumed_no_stbc,
{ "wlan_radio.assumed.no_stbc", PI_ASSUMPTION, PI_WARN,
"No stbc information was available, assuming no stbc.", EXPFILL }},
{ &ei_wlan_radio_assumed_no_extension_streams,
{ "wlan_radio.assumed.no_extension_streams", PI_ASSUMPTION, PI_WARN,
"No extension stream information was available, assuming no extension streams.", EXPFILL }},
{ &ei_wlan_radio_assumed_bcc_fec,
{ "wlan_radio.assumed.bcc_fec", PI_ASSUMPTION, PI_WARN,
"No fec type information was available, assuming bcc fec.", EXPFILL }},
};
module_t *wlan_radio_module;
expert_module_t* expert_wlan_radio;
proto_wlan_radio = proto_register_protocol("802.11 radio information", "802.11 Radio", "wlan_radio");
proto_register_field_array(proto_wlan_radio, hf_wlan_radio, array_length(hf_wlan_radio));
proto_register_subtree_array(ett, array_length(ett));
expert_wlan_radio = expert_register_protocol(proto_wlan_radio);
expert_register_field_array(expert_wlan_radio, ei, array_length(ei));
wlan_radio_handle = register_dissector("wlan_radio", dissect_wlan_radio, proto_wlan_radio);
wlan_noqos_radio_handle = register_dissector("wlan_noqos_radio", dissect_wlan_noqos_radio, proto_wlan_radio);
wlan_radio_module = prefs_register_protocol(proto_wlan_radio, NULL);
prefs_register_bool_preference(wlan_radio_module, "always_short_preamble",
"802.11/11b preamble length is always short",
"Some generators incorrectly indicate long preamble when the preamble was actually"
"short. Always assume short preamble when calculating duration.",
&wlan_radio_always_short_preamble);
prefs_register_bool_preference(wlan_radio_module, "tsf_at_end",
"TSF indicates the end of the PPDU",
"Some generators timestamp the end of the PPDU rather than the start of the (A)MPDU.",
&wlan_radio_tsf_at_end);
prefs_register_bool_preference(wlan_radio_module, "timeline",
"Enable Wireless Timeline (experimental)",
"Enables an additional panel for navigating through packets",
&wlan_radio_timeline_enabled);
register_init_routine( setup_ieee80211_radio );
register_cleanup_routine( cleanup_ieee80211_radio );
}
void proto_reg_handoff_ieee80211_radio(void)
{
/* Register handoff to radio-header dissectors */
dissector_add_uint("wtap_encap", WTAP_ENCAP_IEEE_802_11_WITH_RADIO,
wlan_radio_handle);
ieee80211_handle = find_dissector_add_dependency("wlan", proto_wlan_radio);
ieee80211_noqos_handle = find_dissector_add_dependency("wlan_noqos", proto_wlan_radio);
wlan_radio_tap = register_tap("wlan_radio");
wlan_radio_timeline_tap = register_tap("wlan_radio_timeline");
}
/*
* Editor modelines
*
* Local Variables:
* c-basic-offset: 2
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=2 tabstop=8 expandtab:
* :indentSize=2:tabSize=8:noTabs=true:
*/
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