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https://git.kernel.org/pub/scm/network/wireless/iwd.git
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43db085ef1
Similar to the HT/VHT APIs, this estimates the data rate based on the HE Capabilities element, in addition to our own capabilities. The logic is much the same as HT/VHT. The major difference being that HE uses several MCS tables depending on the channel width. Each width MCS set is checked (if supported) and the highest estimated rate out of all the MCS sets is used.
100 lines
3.0 KiB
C
100 lines
3.0 KiB
C
/*
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*
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* Wireless daemon for Linux
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*
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* Copyright (C) 2021 Intel Corporation. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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enum ofdm_channel_width {
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OFDM_CHANNEL_WIDTH_20MHZ = 0,
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OFDM_CHANNEL_WIDTH_40MHZ,
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OFDM_CHANNEL_WIDTH_80MHZ,
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OFDM_CHANNEL_WIDTH_160MHZ,
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};
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enum band_chandef_width {
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BAND_CHANDEF_WIDTH_20NOHT = 0,
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BAND_CHANDEF_WIDTH_20,
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BAND_CHANDEF_WIDTH_40,
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BAND_CHANDEF_WIDTH_80,
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BAND_CHANDEF_WIDTH_80P80,
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BAND_CHANDEF_WIDTH_160,
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};
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enum band_freq {
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BAND_FREQ_2_4_GHZ = 0x1,
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BAND_FREQ_5_GHZ = 0x2,
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BAND_FREQ_6_GHZ = 0x4,
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};
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struct band_chandef {
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uint32_t frequency;
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uint32_t channel_width;
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uint32_t center1_frequency;
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uint32_t center2_frequency;
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};
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struct band_he_capabilities {
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uint32_t iftypes;
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uint8_t he_phy_capa[11];
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uint8_t he_mcs_set[12];
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};
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struct band {
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enum band_freq freq;
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/* Each entry is type struct band_he_capabilities */
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struct l_queue *he_capabilities;
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uint8_t vht_mcs_set[8];
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uint8_t vht_capabilities[4];
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bool vht_supported : 1;
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uint8_t ht_mcs_set[16];
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uint8_t ht_capabilities[2];
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bool ht_supported : 1;
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uint16_t supported_rates_len;
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uint8_t supported_rates[];
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};
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void band_free(struct band *band);
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bool band_ofdm_rate(uint8_t index, enum ofdm_channel_width width,
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int32_t rssi, uint8_t nss, bool sgi,
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uint64_t *data_rate);
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int band_estimate_he_rx_rate(const struct band *band, const uint8_t *hec,
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int32_t rssi, uint64_t *out_dat_rate);
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int band_estimate_vht_rx_rate(const struct band *band,
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const uint8_t *vhtc, const uint8_t *vhto,
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const uint8_t *htc, const uint8_t *hto,
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int32_t rssi, uint64_t *out_data_rate);
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int band_estimate_ht_rx_rate(const struct band *band,
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const uint8_t *htc, const uint8_t *hto,
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int32_t rssi, uint64_t *out_data_rate);
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int band_estimate_nonht_rate(const struct band *band,
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const uint8_t *supported_rates,
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const uint8_t *ext_supported_rates,
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int32_t rssi, uint64_t *out_data_rate);
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int oci_to_frequency(uint32_t operating_class, uint32_t channel);
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int oci_verify(const uint8_t oci[static 3], const struct band_chandef *own);
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int oci_from_chandef(const struct band_chandef *own, uint8_t oci[static 3]);
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uint8_t band_freq_to_channel(uint32_t freq, enum band_freq *out_band);
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uint32_t band_channel_to_freq(uint8_t channel, enum band_freq band);
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enum band_freq band_oper_class_to_band(const uint8_t *country,
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uint8_t oper_class);
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