forked from Minki/linux
443df9a776
If the station supports EHT mode, calculate the maximum RX NSS from EHT station capabilities. Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com> Link: https://lore.kernel.org/r/20220214173004.cf61972c8919.I54f5a416f0789bf4eefad04703d941b6755f6dd6@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
724 lines
22 KiB
C
724 lines
22 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* VHT handling
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*
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* Portions of this file
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* Copyright(c) 2015 - 2016 Intel Deutschland GmbH
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* Copyright (C) 2018 - 2021 Intel Corporation
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*/
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#include <linux/ieee80211.h>
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#include <linux/export.h>
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#include <net/mac80211.h>
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#include "ieee80211_i.h"
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#include "rate.h"
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static void __check_vhtcap_disable(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_sta_vht_cap *vht_cap,
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u32 flag)
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{
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__le32 le_flag = cpu_to_le32(flag);
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if (sdata->u.mgd.vht_capa_mask.vht_cap_info & le_flag &&
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!(sdata->u.mgd.vht_capa.vht_cap_info & le_flag))
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vht_cap->cap &= ~flag;
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}
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void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_sta_vht_cap *vht_cap)
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{
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int i;
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u16 rxmcs_mask, rxmcs_cap, rxmcs_n, txmcs_mask, txmcs_cap, txmcs_n;
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if (!vht_cap->vht_supported)
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return;
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if (sdata->vif.type != NL80211_IFTYPE_STATION)
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return;
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__check_vhtcap_disable(sdata, vht_cap,
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IEEE80211_VHT_CAP_RXLDPC);
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__check_vhtcap_disable(sdata, vht_cap,
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IEEE80211_VHT_CAP_SHORT_GI_80);
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__check_vhtcap_disable(sdata, vht_cap,
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IEEE80211_VHT_CAP_SHORT_GI_160);
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__check_vhtcap_disable(sdata, vht_cap,
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IEEE80211_VHT_CAP_TXSTBC);
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__check_vhtcap_disable(sdata, vht_cap,
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IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE);
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__check_vhtcap_disable(sdata, vht_cap,
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IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE);
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__check_vhtcap_disable(sdata, vht_cap,
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IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN);
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__check_vhtcap_disable(sdata, vht_cap,
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IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN);
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/* Allow user to decrease AMPDU length exponent */
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if (sdata->u.mgd.vht_capa_mask.vht_cap_info &
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cpu_to_le32(IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK)) {
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u32 cap, n;
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n = le32_to_cpu(sdata->u.mgd.vht_capa.vht_cap_info) &
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IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
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n >>= IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;
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cap = vht_cap->cap & IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
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cap >>= IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;
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if (n < cap) {
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vht_cap->cap &=
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~IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
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vht_cap->cap |=
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n << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;
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}
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}
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/* Allow the user to decrease MCSes */
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rxmcs_mask =
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le16_to_cpu(sdata->u.mgd.vht_capa_mask.supp_mcs.rx_mcs_map);
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rxmcs_n = le16_to_cpu(sdata->u.mgd.vht_capa.supp_mcs.rx_mcs_map);
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rxmcs_n &= rxmcs_mask;
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rxmcs_cap = le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map);
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txmcs_mask =
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le16_to_cpu(sdata->u.mgd.vht_capa_mask.supp_mcs.tx_mcs_map);
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txmcs_n = le16_to_cpu(sdata->u.mgd.vht_capa.supp_mcs.tx_mcs_map);
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txmcs_n &= txmcs_mask;
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txmcs_cap = le16_to_cpu(vht_cap->vht_mcs.tx_mcs_map);
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for (i = 0; i < 8; i++) {
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u8 m, n, c;
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m = (rxmcs_mask >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
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n = (rxmcs_n >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
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c = (rxmcs_cap >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
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if (m && ((c != IEEE80211_VHT_MCS_NOT_SUPPORTED && n < c) ||
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n == IEEE80211_VHT_MCS_NOT_SUPPORTED)) {
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rxmcs_cap &= ~(3 << 2*i);
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rxmcs_cap |= (rxmcs_n & (3 << 2*i));
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}
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m = (txmcs_mask >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
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n = (txmcs_n >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
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c = (txmcs_cap >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
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if (m && ((c != IEEE80211_VHT_MCS_NOT_SUPPORTED && n < c) ||
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n == IEEE80211_VHT_MCS_NOT_SUPPORTED)) {
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txmcs_cap &= ~(3 << 2*i);
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txmcs_cap |= (txmcs_n & (3 << 2*i));
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}
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}
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vht_cap->vht_mcs.rx_mcs_map = cpu_to_le16(rxmcs_cap);
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vht_cap->vht_mcs.tx_mcs_map = cpu_to_le16(txmcs_cap);
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}
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void
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ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_supported_band *sband,
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const struct ieee80211_vht_cap *vht_cap_ie,
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struct sta_info *sta)
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{
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struct ieee80211_sta_vht_cap *vht_cap = &sta->sta.vht_cap;
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struct ieee80211_sta_vht_cap own_cap;
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u32 cap_info, i;
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bool have_80mhz;
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memset(vht_cap, 0, sizeof(*vht_cap));
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if (!sta->sta.ht_cap.ht_supported)
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return;
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if (!vht_cap_ie || !sband->vht_cap.vht_supported)
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return;
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/* Allow VHT if at least one channel on the sband supports 80 MHz */
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have_80mhz = false;
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for (i = 0; i < sband->n_channels; i++) {
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if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
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IEEE80211_CHAN_NO_80MHZ))
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continue;
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have_80mhz = true;
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break;
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}
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if (!have_80mhz)
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return;
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/*
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* A VHT STA must support 40 MHz, but if we verify that here
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* then we break a few things - some APs (e.g. Netgear R6300v2
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* and others based on the BCM4360 chipset) will unset this
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* capability bit when operating in 20 MHz.
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*/
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vht_cap->vht_supported = true;
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own_cap = sband->vht_cap;
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/*
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* If user has specified capability overrides, take care
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* of that if the station we're setting up is the AP that
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* we advertised a restricted capability set to. Override
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* our own capabilities and then use those below.
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*/
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if (sdata->vif.type == NL80211_IFTYPE_STATION &&
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!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
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ieee80211_apply_vhtcap_overrides(sdata, &own_cap);
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/* take some capabilities as-is */
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cap_info = le32_to_cpu(vht_cap_ie->vht_cap_info);
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vht_cap->cap = cap_info;
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vht_cap->cap &= IEEE80211_VHT_CAP_RXLDPC |
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IEEE80211_VHT_CAP_VHT_TXOP_PS |
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IEEE80211_VHT_CAP_HTC_VHT |
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IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK |
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IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_UNSOL_MFB |
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IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB |
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IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN |
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IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN;
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vht_cap->cap |= min_t(u32, cap_info & IEEE80211_VHT_CAP_MAX_MPDU_MASK,
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own_cap.cap & IEEE80211_VHT_CAP_MAX_MPDU_MASK);
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/* and some based on our own capabilities */
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switch (own_cap.cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) {
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case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:
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vht_cap->cap |= cap_info &
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IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
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break;
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case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ:
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vht_cap->cap |= cap_info &
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IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
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break;
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default:
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/* nothing */
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break;
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}
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/* symmetric capabilities */
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vht_cap->cap |= cap_info & own_cap.cap &
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(IEEE80211_VHT_CAP_SHORT_GI_80 |
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IEEE80211_VHT_CAP_SHORT_GI_160);
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/* remaining ones */
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if (own_cap.cap & IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE)
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vht_cap->cap |= cap_info &
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(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
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IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK);
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if (own_cap.cap & IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)
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vht_cap->cap |= cap_info &
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(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
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IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK);
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if (own_cap.cap & IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)
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vht_cap->cap |= cap_info &
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IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
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if (own_cap.cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE)
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vht_cap->cap |= cap_info &
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IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE;
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if (own_cap.cap & IEEE80211_VHT_CAP_TXSTBC)
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vht_cap->cap |= cap_info & IEEE80211_VHT_CAP_RXSTBC_MASK;
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if (own_cap.cap & IEEE80211_VHT_CAP_RXSTBC_MASK)
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vht_cap->cap |= cap_info & IEEE80211_VHT_CAP_TXSTBC;
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/* Copy peer MCS info, the driver might need them. */
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memcpy(&vht_cap->vht_mcs, &vht_cap_ie->supp_mcs,
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sizeof(struct ieee80211_vht_mcs_info));
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/* copy EXT_NSS_BW Support value or remove the capability */
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if (ieee80211_hw_check(&sdata->local->hw, SUPPORTS_VHT_EXT_NSS_BW))
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vht_cap->cap |= (cap_info & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK);
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else
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vht_cap->vht_mcs.tx_highest &=
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~cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE);
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/* but also restrict MCSes */
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for (i = 0; i < 8; i++) {
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u16 own_rx, own_tx, peer_rx, peer_tx;
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own_rx = le16_to_cpu(own_cap.vht_mcs.rx_mcs_map);
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own_rx = (own_rx >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
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own_tx = le16_to_cpu(own_cap.vht_mcs.tx_mcs_map);
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own_tx = (own_tx >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
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peer_rx = le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map);
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peer_rx = (peer_rx >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
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peer_tx = le16_to_cpu(vht_cap->vht_mcs.tx_mcs_map);
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peer_tx = (peer_tx >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
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if (peer_tx != IEEE80211_VHT_MCS_NOT_SUPPORTED) {
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if (own_rx == IEEE80211_VHT_MCS_NOT_SUPPORTED)
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peer_tx = IEEE80211_VHT_MCS_NOT_SUPPORTED;
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else if (own_rx < peer_tx)
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peer_tx = own_rx;
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}
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if (peer_rx != IEEE80211_VHT_MCS_NOT_SUPPORTED) {
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if (own_tx == IEEE80211_VHT_MCS_NOT_SUPPORTED)
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peer_rx = IEEE80211_VHT_MCS_NOT_SUPPORTED;
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else if (own_tx < peer_rx)
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peer_rx = own_tx;
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}
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vht_cap->vht_mcs.rx_mcs_map &=
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~cpu_to_le16(IEEE80211_VHT_MCS_NOT_SUPPORTED << i * 2);
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vht_cap->vht_mcs.rx_mcs_map |= cpu_to_le16(peer_rx << i * 2);
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vht_cap->vht_mcs.tx_mcs_map &=
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~cpu_to_le16(IEEE80211_VHT_MCS_NOT_SUPPORTED << i * 2);
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vht_cap->vht_mcs.tx_mcs_map |= cpu_to_le16(peer_tx << i * 2);
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}
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/*
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* This is a workaround for VHT-enabled STAs which break the spec
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* and have the VHT-MCS Rx map filled in with value 3 for all eight
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* spacial streams, an example is AR9462.
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*
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* As per spec, in section 22.1.1 Introduction to the VHT PHY
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* A VHT STA shall support at least single spactial stream VHT-MCSs
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* 0 to 7 (transmit and receive) in all supported channel widths.
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*/
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if (vht_cap->vht_mcs.rx_mcs_map == cpu_to_le16(0xFFFF)) {
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vht_cap->vht_supported = false;
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sdata_info(sdata, "Ignoring VHT IE from %pM due to invalid rx_mcs_map\n",
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sta->addr);
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return;
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}
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/* finally set up the bandwidth */
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switch (vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) {
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case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:
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case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ:
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sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_160;
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break;
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default:
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sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_80;
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if (!(vht_cap->vht_mcs.tx_highest &
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cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE)))
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break;
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/*
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* If this is non-zero, then it does support 160 MHz after all,
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* in one form or the other. We don't distinguish here (or even
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* above) between 160 and 80+80 yet.
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*/
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if (cap_info & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK)
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sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_160;
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}
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sta->sta.bandwidth = ieee80211_sta_cur_vht_bw(sta);
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switch (vht_cap->cap & IEEE80211_VHT_CAP_MAX_MPDU_MASK) {
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case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
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sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_11454;
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break;
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case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
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sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_7991;
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break;
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case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
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default:
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sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_3895;
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break;
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}
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}
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/* FIXME: move this to some better location - parses HE/EHT now */
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enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta)
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{
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struct ieee80211_sta_vht_cap *vht_cap = &sta->sta.vht_cap;
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struct ieee80211_sta_he_cap *he_cap = &sta->sta.he_cap;
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struct ieee80211_sta_eht_cap *eht_cap = &sta->sta.eht_cap;
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u32 cap_width;
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if (he_cap->has_he) {
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u8 info;
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if (eht_cap->has_eht &&
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sta->sdata->vif.bss_conf.chandef.chan->band ==
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NL80211_BAND_6GHZ) {
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info = eht_cap->eht_cap_elem.phy_cap_info[0];
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if (info & IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ)
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return IEEE80211_STA_RX_BW_320;
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}
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info = he_cap->he_cap_elem.phy_cap_info[0];
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if (sta->sdata->vif.bss_conf.chandef.chan->band ==
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NL80211_BAND_2GHZ) {
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if (info & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G)
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return IEEE80211_STA_RX_BW_40;
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else
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return IEEE80211_STA_RX_BW_20;
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}
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if (info & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G ||
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info & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G)
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return IEEE80211_STA_RX_BW_160;
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else if (info & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G)
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return IEEE80211_STA_RX_BW_80;
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return IEEE80211_STA_RX_BW_20;
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}
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if (!vht_cap->vht_supported)
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return sta->sta.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ?
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IEEE80211_STA_RX_BW_40 :
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IEEE80211_STA_RX_BW_20;
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cap_width = vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
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if (cap_width == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ ||
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cap_width == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
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return IEEE80211_STA_RX_BW_160;
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/*
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* If this is non-zero, then it does support 160 MHz after all,
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* in one form or the other. We don't distinguish here (or even
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* above) between 160 and 80+80 yet.
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*/
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if (vht_cap->cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK)
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return IEEE80211_STA_RX_BW_160;
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return IEEE80211_STA_RX_BW_80;
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}
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|
|
enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta)
|
|
{
|
|
struct ieee80211_sta_vht_cap *vht_cap = &sta->sta.vht_cap;
|
|
u32 cap_width;
|
|
|
|
if (!vht_cap->vht_supported) {
|
|
if (!sta->sta.ht_cap.ht_supported)
|
|
return NL80211_CHAN_WIDTH_20_NOHT;
|
|
|
|
return sta->sta.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ?
|
|
NL80211_CHAN_WIDTH_40 : NL80211_CHAN_WIDTH_20;
|
|
}
|
|
|
|
cap_width = vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
|
|
|
|
if (cap_width == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ)
|
|
return NL80211_CHAN_WIDTH_160;
|
|
else if (cap_width == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
|
|
return NL80211_CHAN_WIDTH_80P80;
|
|
|
|
return NL80211_CHAN_WIDTH_80;
|
|
}
|
|
|
|
enum nl80211_chan_width
|
|
ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta)
|
|
{
|
|
enum ieee80211_sta_rx_bandwidth cur_bw = sta->sta.bandwidth;
|
|
struct ieee80211_sta_vht_cap *vht_cap = &sta->sta.vht_cap;
|
|
u32 cap_width;
|
|
|
|
switch (cur_bw) {
|
|
case IEEE80211_STA_RX_BW_20:
|
|
if (!sta->sta.ht_cap.ht_supported)
|
|
return NL80211_CHAN_WIDTH_20_NOHT;
|
|
else
|
|
return NL80211_CHAN_WIDTH_20;
|
|
case IEEE80211_STA_RX_BW_40:
|
|
return NL80211_CHAN_WIDTH_40;
|
|
case IEEE80211_STA_RX_BW_80:
|
|
return NL80211_CHAN_WIDTH_80;
|
|
case IEEE80211_STA_RX_BW_160:
|
|
cap_width =
|
|
vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
|
|
|
|
if (cap_width == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ)
|
|
return NL80211_CHAN_WIDTH_160;
|
|
|
|
return NL80211_CHAN_WIDTH_80P80;
|
|
default:
|
|
return NL80211_CHAN_WIDTH_20;
|
|
}
|
|
}
|
|
|
|
enum ieee80211_sta_rx_bandwidth
|
|
ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width)
|
|
{
|
|
switch (width) {
|
|
case NL80211_CHAN_WIDTH_20_NOHT:
|
|
case NL80211_CHAN_WIDTH_20:
|
|
return IEEE80211_STA_RX_BW_20;
|
|
case NL80211_CHAN_WIDTH_40:
|
|
return IEEE80211_STA_RX_BW_40;
|
|
case NL80211_CHAN_WIDTH_80:
|
|
return IEEE80211_STA_RX_BW_80;
|
|
case NL80211_CHAN_WIDTH_160:
|
|
case NL80211_CHAN_WIDTH_80P80:
|
|
return IEEE80211_STA_RX_BW_160;
|
|
case NL80211_CHAN_WIDTH_320:
|
|
return IEEE80211_STA_RX_BW_320;
|
|
default:
|
|
WARN_ON_ONCE(1);
|
|
return IEEE80211_STA_RX_BW_20;
|
|
}
|
|
}
|
|
|
|
/* FIXME: rename/move - this deals with everything not just VHT */
|
|
enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = sta->sdata;
|
|
enum ieee80211_sta_rx_bandwidth bw;
|
|
enum nl80211_chan_width bss_width = sdata->vif.bss_conf.chandef.width;
|
|
|
|
bw = ieee80211_sta_cap_rx_bw(sta);
|
|
bw = min(bw, sta->cur_max_bandwidth);
|
|
|
|
/* Don't consider AP's bandwidth for TDLS peers, section 11.23.1 of
|
|
* IEEE80211-2016 specification makes higher bandwidth operation
|
|
* possible on the TDLS link if the peers have wider bandwidth
|
|
* capability.
|
|
*
|
|
* However, in this case, and only if the TDLS peer is authorized,
|
|
* limit to the tdls_chandef so that the configuration here isn't
|
|
* wider than what's actually requested on the channel context.
|
|
*/
|
|
if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
|
|
test_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW) &&
|
|
test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
|
|
sta->tdls_chandef.chan)
|
|
bw = min(bw, ieee80211_chan_width_to_rx_bw(sta->tdls_chandef.width));
|
|
else
|
|
bw = min(bw, ieee80211_chan_width_to_rx_bw(bss_width));
|
|
|
|
return bw;
|
|
}
|
|
|
|
void ieee80211_sta_set_rx_nss(struct sta_info *sta)
|
|
{
|
|
u8 ht_rx_nss = 0, vht_rx_nss = 0, he_rx_nss = 0, eht_rx_nss = 0, rx_nss;
|
|
bool support_160;
|
|
|
|
/* if we received a notification already don't overwrite it */
|
|
if (sta->sta.rx_nss)
|
|
return;
|
|
|
|
if (sta->sta.eht_cap.has_eht) {
|
|
int i;
|
|
const u8 *rx_nss_mcs = (void *)&sta->sta.eht_cap.eht_mcs_nss_supp;
|
|
|
|
/* get the max nss for EHT over all possible bandwidths and mcs */
|
|
for (i = 0; i < sizeof(struct ieee80211_eht_mcs_nss_supp); i++)
|
|
eht_rx_nss = max_t(u8, eht_rx_nss,
|
|
u8_get_bits(rx_nss_mcs[i],
|
|
IEEE80211_EHT_MCS_NSS_RX));
|
|
}
|
|
|
|
if (sta->sta.he_cap.has_he) {
|
|
int i;
|
|
u8 rx_mcs_80 = 0, rx_mcs_160 = 0;
|
|
const struct ieee80211_sta_he_cap *he_cap = &sta->sta.he_cap;
|
|
u16 mcs_160_map =
|
|
le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_160);
|
|
u16 mcs_80_map = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_80);
|
|
|
|
for (i = 7; i >= 0; i--) {
|
|
u8 mcs_160 = (mcs_160_map >> (2 * i)) & 3;
|
|
|
|
if (mcs_160 != IEEE80211_HE_MCS_NOT_SUPPORTED) {
|
|
rx_mcs_160 = i + 1;
|
|
break;
|
|
}
|
|
}
|
|
for (i = 7; i >= 0; i--) {
|
|
u8 mcs_80 = (mcs_80_map >> (2 * i)) & 3;
|
|
|
|
if (mcs_80 != IEEE80211_HE_MCS_NOT_SUPPORTED) {
|
|
rx_mcs_80 = i + 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
support_160 = he_cap->he_cap_elem.phy_cap_info[0] &
|
|
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
|
|
|
|
if (support_160)
|
|
he_rx_nss = min(rx_mcs_80, rx_mcs_160);
|
|
else
|
|
he_rx_nss = rx_mcs_80;
|
|
}
|
|
|
|
if (sta->sta.ht_cap.ht_supported) {
|
|
if (sta->sta.ht_cap.mcs.rx_mask[0])
|
|
ht_rx_nss++;
|
|
if (sta->sta.ht_cap.mcs.rx_mask[1])
|
|
ht_rx_nss++;
|
|
if (sta->sta.ht_cap.mcs.rx_mask[2])
|
|
ht_rx_nss++;
|
|
if (sta->sta.ht_cap.mcs.rx_mask[3])
|
|
ht_rx_nss++;
|
|
/* FIXME: consider rx_highest? */
|
|
}
|
|
|
|
if (sta->sta.vht_cap.vht_supported) {
|
|
int i;
|
|
u16 rx_mcs_map;
|
|
|
|
rx_mcs_map = le16_to_cpu(sta->sta.vht_cap.vht_mcs.rx_mcs_map);
|
|
|
|
for (i = 7; i >= 0; i--) {
|
|
u8 mcs = (rx_mcs_map >> (2 * i)) & 3;
|
|
|
|
if (mcs != IEEE80211_VHT_MCS_NOT_SUPPORTED) {
|
|
vht_rx_nss = i + 1;
|
|
break;
|
|
}
|
|
}
|
|
/* FIXME: consider rx_highest? */
|
|
}
|
|
|
|
rx_nss = max(vht_rx_nss, ht_rx_nss);
|
|
rx_nss = max(he_rx_nss, rx_nss);
|
|
rx_nss = max(eht_rx_nss, rx_nss);
|
|
sta->sta.rx_nss = max_t(u8, 1, rx_nss);
|
|
}
|
|
|
|
u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
|
|
struct sta_info *sta, u8 opmode,
|
|
enum nl80211_band band)
|
|
{
|
|
enum ieee80211_sta_rx_bandwidth new_bw;
|
|
struct sta_opmode_info sta_opmode = {};
|
|
u32 changed = 0;
|
|
u8 nss;
|
|
|
|
/* ignore - no support for BF yet */
|
|
if (opmode & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)
|
|
return 0;
|
|
|
|
nss = opmode & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
|
|
nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
|
|
nss += 1;
|
|
|
|
if (sta->sta.rx_nss != nss) {
|
|
sta->sta.rx_nss = nss;
|
|
sta_opmode.rx_nss = nss;
|
|
changed |= IEEE80211_RC_NSS_CHANGED;
|
|
sta_opmode.changed |= STA_OPMODE_N_SS_CHANGED;
|
|
}
|
|
|
|
switch (opmode & IEEE80211_OPMODE_NOTIF_CHANWIDTH_MASK) {
|
|
case IEEE80211_OPMODE_NOTIF_CHANWIDTH_20MHZ:
|
|
/* ignore IEEE80211_OPMODE_NOTIF_BW_160_80P80 must not be set */
|
|
sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_20;
|
|
break;
|
|
case IEEE80211_OPMODE_NOTIF_CHANWIDTH_40MHZ:
|
|
/* ignore IEEE80211_OPMODE_NOTIF_BW_160_80P80 must not be set */
|
|
sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_40;
|
|
break;
|
|
case IEEE80211_OPMODE_NOTIF_CHANWIDTH_80MHZ:
|
|
if (opmode & IEEE80211_OPMODE_NOTIF_BW_160_80P80)
|
|
sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_160;
|
|
else
|
|
sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_80;
|
|
break;
|
|
case IEEE80211_OPMODE_NOTIF_CHANWIDTH_160MHZ:
|
|
/* legacy only, no longer used by newer spec */
|
|
sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_160;
|
|
break;
|
|
}
|
|
|
|
new_bw = ieee80211_sta_cur_vht_bw(sta);
|
|
if (new_bw != sta->sta.bandwidth) {
|
|
sta->sta.bandwidth = new_bw;
|
|
sta_opmode.bw = ieee80211_sta_rx_bw_to_chan_width(sta);
|
|
changed |= IEEE80211_RC_BW_CHANGED;
|
|
sta_opmode.changed |= STA_OPMODE_MAX_BW_CHANGED;
|
|
}
|
|
|
|
if (sta_opmode.changed)
|
|
cfg80211_sta_opmode_change_notify(sdata->dev, sta->addr,
|
|
&sta_opmode, GFP_KERNEL);
|
|
|
|
return changed;
|
|
}
|
|
|
|
void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211_mgmt *mgmt)
|
|
{
|
|
struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
|
|
|
|
if (!sdata->vif.mu_mimo_owner)
|
|
return;
|
|
|
|
if (!memcmp(mgmt->u.action.u.vht_group_notif.position,
|
|
bss_conf->mu_group.position, WLAN_USER_POSITION_LEN) &&
|
|
!memcmp(mgmt->u.action.u.vht_group_notif.membership,
|
|
bss_conf->mu_group.membership, WLAN_MEMBERSHIP_LEN))
|
|
return;
|
|
|
|
memcpy(bss_conf->mu_group.membership,
|
|
mgmt->u.action.u.vht_group_notif.membership,
|
|
WLAN_MEMBERSHIP_LEN);
|
|
memcpy(bss_conf->mu_group.position,
|
|
mgmt->u.action.u.vht_group_notif.position,
|
|
WLAN_USER_POSITION_LEN);
|
|
|
|
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MU_GROUPS);
|
|
}
|
|
|
|
void ieee80211_update_mu_groups(struct ieee80211_vif *vif,
|
|
const u8 *membership, const u8 *position)
|
|
{
|
|
struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
|
|
|
|
if (WARN_ON_ONCE(!vif->mu_mimo_owner))
|
|
return;
|
|
|
|
memcpy(bss_conf->mu_group.membership, membership, WLAN_MEMBERSHIP_LEN);
|
|
memcpy(bss_conf->mu_group.position, position, WLAN_USER_POSITION_LEN);
|
|
}
|
|
EXPORT_SYMBOL_GPL(ieee80211_update_mu_groups);
|
|
|
|
void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
|
|
struct sta_info *sta, u8 opmode,
|
|
enum nl80211_band band)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band];
|
|
|
|
u32 changed = __ieee80211_vht_handle_opmode(sdata, sta, opmode, band);
|
|
|
|
if (changed > 0) {
|
|
ieee80211_recalc_min_chandef(sdata);
|
|
rate_control_rate_update(local, sband, sta, changed);
|
|
}
|
|
}
|
|
|
|
void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
|
|
u16 vht_mask[NL80211_VHT_NSS_MAX])
|
|
{
|
|
int i;
|
|
u16 mask, cap = le16_to_cpu(vht_cap);
|
|
|
|
for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
|
|
mask = (cap >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
|
|
switch (mask) {
|
|
case IEEE80211_VHT_MCS_SUPPORT_0_7:
|
|
vht_mask[i] = 0x00FF;
|
|
break;
|
|
case IEEE80211_VHT_MCS_SUPPORT_0_8:
|
|
vht_mask[i] = 0x01FF;
|
|
break;
|
|
case IEEE80211_VHT_MCS_SUPPORT_0_9:
|
|
vht_mask[i] = 0x03FF;
|
|
break;
|
|
case IEEE80211_VHT_MCS_NOT_SUPPORTED:
|
|
default:
|
|
vht_mask[i] = 0;
|
|
break;
|
|
}
|
|
}
|
|
}
|