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237 lines
7.2 KiB
237 lines
7.2 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* HE handling |
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* |
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* Copyright(c) 2017 Intel Deutschland GmbH |
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* Copyright(c) 2019 - 2020 Intel Corporation |
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*/ |
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#include "ieee80211_i.h" |
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static void |
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ieee80211_update_from_he_6ghz_capa(const struct ieee80211_he_6ghz_capa *he_6ghz_capa, |
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struct sta_info *sta) |
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{ |
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enum ieee80211_smps_mode smps_mode; |
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if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
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sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
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switch (le16_get_bits(he_6ghz_capa->capa, |
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IEEE80211_HE_6GHZ_CAP_SM_PS)) { |
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case WLAN_HT_CAP_SM_PS_INVALID: |
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case WLAN_HT_CAP_SM_PS_STATIC: |
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smps_mode = IEEE80211_SMPS_STATIC; |
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break; |
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case WLAN_HT_CAP_SM_PS_DYNAMIC: |
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smps_mode = IEEE80211_SMPS_DYNAMIC; |
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break; |
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case WLAN_HT_CAP_SM_PS_DISABLED: |
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smps_mode = IEEE80211_SMPS_OFF; |
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break; |
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} |
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sta->sta.smps_mode = smps_mode; |
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} else { |
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sta->sta.smps_mode = IEEE80211_SMPS_OFF; |
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} |
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switch (le16_get_bits(he_6ghz_capa->capa, |
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IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN)) { |
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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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sta->sta.he_6ghz_capa = *he_6ghz_capa; |
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} |
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static void ieee80211_he_mcs_disable(__le16 *he_mcs) |
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{ |
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u32 i; |
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for (i = 0; i < 8; i++) |
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*he_mcs |= cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2); |
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} |
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static void ieee80211_he_mcs_intersection(__le16 *he_own_rx, __le16 *he_peer_rx, |
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__le16 *he_own_tx, __le16 *he_peer_tx) |
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{ |
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u32 i; |
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u16 own_rx, own_tx, peer_rx, peer_tx; |
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for (i = 0; i < 8; i++) { |
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own_rx = le16_to_cpu(*he_own_rx); |
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own_rx = (own_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; |
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own_tx = le16_to_cpu(*he_own_tx); |
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own_tx = (own_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; |
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peer_rx = le16_to_cpu(*he_peer_rx); |
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peer_rx = (peer_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; |
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peer_tx = le16_to_cpu(*he_peer_tx); |
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peer_tx = (peer_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; |
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if (peer_tx != IEEE80211_HE_MCS_NOT_SUPPORTED) { |
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if (own_rx == IEEE80211_HE_MCS_NOT_SUPPORTED) |
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peer_tx = IEEE80211_HE_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_HE_MCS_NOT_SUPPORTED) { |
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if (own_tx == IEEE80211_HE_MCS_NOT_SUPPORTED) |
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peer_rx = IEEE80211_HE_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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*he_peer_rx &= |
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~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2); |
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*he_peer_rx |= cpu_to_le16(peer_rx << i * 2); |
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*he_peer_tx &= |
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~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2); |
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*he_peer_tx |= cpu_to_le16(peer_tx << i * 2); |
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} |
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} |
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void |
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ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, |
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struct ieee80211_supported_band *sband, |
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const u8 *he_cap_ie, u8 he_cap_len, |
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const struct ieee80211_he_6ghz_capa *he_6ghz_capa, |
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struct sta_info *sta) |
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{ |
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struct ieee80211_sta_he_cap *he_cap = &sta->sta.he_cap; |
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struct ieee80211_sta_he_cap own_he_cap; |
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struct ieee80211_he_cap_elem *he_cap_ie_elem = (void *)he_cap_ie; |
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u8 he_ppe_size; |
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u8 mcs_nss_size; |
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u8 he_total_size; |
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bool own_160, peer_160, own_80p80, peer_80p80; |
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memset(he_cap, 0, sizeof(*he_cap)); |
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if (!he_cap_ie || |
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!ieee80211_get_he_iftype_cap(sband, |
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ieee80211_vif_type_p2p(&sdata->vif))) |
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return; |
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own_he_cap = sband->iftype_data->he_cap; |
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/* Make sure size is OK */ |
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mcs_nss_size = ieee80211_he_mcs_nss_size(he_cap_ie_elem); |
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he_ppe_size = |
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ieee80211_he_ppe_size(he_cap_ie[sizeof(he_cap->he_cap_elem) + |
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mcs_nss_size], |
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he_cap_ie_elem->phy_cap_info); |
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he_total_size = sizeof(he_cap->he_cap_elem) + mcs_nss_size + |
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he_ppe_size; |
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if (he_cap_len < he_total_size) |
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return; |
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memcpy(&he_cap->he_cap_elem, he_cap_ie, sizeof(he_cap->he_cap_elem)); |
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/* HE Tx/Rx HE MCS NSS Support Field */ |
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memcpy(&he_cap->he_mcs_nss_supp, |
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&he_cap_ie[sizeof(he_cap->he_cap_elem)], mcs_nss_size); |
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/* Check if there are (optional) PPE Thresholds */ |
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if (he_cap->he_cap_elem.phy_cap_info[6] & |
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IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) |
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memcpy(he_cap->ppe_thres, |
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&he_cap_ie[sizeof(he_cap->he_cap_elem) + mcs_nss_size], |
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he_ppe_size); |
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he_cap->has_he = true; |
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sta->cur_max_bandwidth = ieee80211_sta_cap_rx_bw(sta); |
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sta->sta.bandwidth = ieee80211_sta_cur_vht_bw(sta); |
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if (sband->band == NL80211_BAND_6GHZ && he_6ghz_capa) |
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ieee80211_update_from_he_6ghz_capa(he_6ghz_capa, sta); |
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ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_80, |
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&he_cap->he_mcs_nss_supp.rx_mcs_80, |
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&own_he_cap.he_mcs_nss_supp.tx_mcs_80, |
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&he_cap->he_mcs_nss_supp.tx_mcs_80); |
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own_160 = own_he_cap.he_cap_elem.phy_cap_info[0] & |
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IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; |
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peer_160 = he_cap->he_cap_elem.phy_cap_info[0] & |
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IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; |
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if (peer_160 && own_160) { |
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ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_160, |
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&he_cap->he_mcs_nss_supp.rx_mcs_160, |
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&own_he_cap.he_mcs_nss_supp.tx_mcs_160, |
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&he_cap->he_mcs_nss_supp.tx_mcs_160); |
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} else if (peer_160 && !own_160) { |
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ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.rx_mcs_160); |
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ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.tx_mcs_160); |
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he_cap->he_cap_elem.phy_cap_info[0] &= |
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~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; |
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} |
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own_80p80 = own_he_cap.he_cap_elem.phy_cap_info[0] & |
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IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G; |
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peer_80p80 = he_cap->he_cap_elem.phy_cap_info[0] & |
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IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G; |
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if (peer_80p80 && own_80p80) { |
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ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_80p80, |
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&he_cap->he_mcs_nss_supp.rx_mcs_80p80, |
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&own_he_cap.he_mcs_nss_supp.tx_mcs_80p80, |
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&he_cap->he_mcs_nss_supp.tx_mcs_80p80); |
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} else if (peer_80p80 && !own_80p80) { |
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ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.rx_mcs_80p80); |
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ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.tx_mcs_80p80); |
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he_cap->he_cap_elem.phy_cap_info[0] &= |
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~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G; |
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} |
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} |
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void |
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ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, |
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const struct ieee80211_he_operation *he_op_ie) |
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{ |
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memset(&vif->bss_conf.he_oper, 0, sizeof(vif->bss_conf.he_oper)); |
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if (!he_op_ie) |
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return; |
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vif->bss_conf.he_oper.params = __le32_to_cpu(he_op_ie->he_oper_params); |
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vif->bss_conf.he_oper.nss_set = __le16_to_cpu(he_op_ie->he_mcs_nss_set); |
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} |
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void |
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ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif, |
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const struct ieee80211_he_spr *he_spr_ie_elem) |
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{ |
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struct ieee80211_he_obss_pd *he_obss_pd = |
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&vif->bss_conf.he_obss_pd; |
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const u8 *data; |
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memset(he_obss_pd, 0, sizeof(*he_obss_pd)); |
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if (!he_spr_ie_elem) |
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return; |
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data = he_spr_ie_elem->optional; |
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if (he_spr_ie_elem->he_sr_control & |
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IEEE80211_HE_SPR_NON_SRG_OFFSET_PRESENT) |
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data++; |
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if (he_spr_ie_elem->he_sr_control & |
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IEEE80211_HE_SPR_SRG_INFORMATION_PRESENT) { |
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he_obss_pd->max_offset = *data++; |
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he_obss_pd->min_offset = *data++; |
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he_obss_pd->enable = true; |
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} |
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}
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