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- // SPDX-License-Identifier: GPL-2.0-only
- /*
- * HE handling
- *
- * Copyright(c) 2017 Intel Deutschland GmbH
- * Copyright(c) 2019 - 2023 Intel Corporation
- */
- #include "ieee80211_i.h"
- static void
- ieee80211_update_from_he_6ghz_capa(const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
- struct link_sta_info *link_sta)
- {
- struct sta_info *sta = link_sta->sta;
- enum ieee80211_smps_mode smps_mode;
- if (sta->sdata->vif.type == NL80211_IFTYPE_AP ||
- sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
- switch (le16_get_bits(he_6ghz_capa->capa,
- IEEE80211_HE_6GHZ_CAP_SM_PS)) {
- case WLAN_HT_CAP_SM_PS_INVALID:
- case WLAN_HT_CAP_SM_PS_STATIC:
- smps_mode = IEEE80211_SMPS_STATIC;
- break;
- case WLAN_HT_CAP_SM_PS_DYNAMIC:
- smps_mode = IEEE80211_SMPS_DYNAMIC;
- break;
- case WLAN_HT_CAP_SM_PS_DISABLED:
- smps_mode = IEEE80211_SMPS_OFF;
- break;
- }
- link_sta->pub->smps_mode = smps_mode;
- } else {
- link_sta->pub->smps_mode = IEEE80211_SMPS_OFF;
- }
- switch (le16_get_bits(he_6ghz_capa->capa,
- IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN)) {
- case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
- link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_11454;
- break;
- case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
- link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_7991;
- break;
- case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
- default:
- link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_3895;
- break;
- }
- ieee80211_sta_recalc_aggregates(&sta->sta);
- link_sta->pub->he_6ghz_capa = *he_6ghz_capa;
- }
- static void ieee80211_he_mcs_disable(__le16 *he_mcs)
- {
- u32 i;
- for (i = 0; i < 8; i++)
- *he_mcs |= cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2);
- }
- static void ieee80211_he_mcs_intersection(__le16 *he_own_rx, __le16 *he_peer_rx,
- __le16 *he_own_tx, __le16 *he_peer_tx)
- {
- u32 i;
- u16 own_rx, own_tx, peer_rx, peer_tx;
- for (i = 0; i < 8; i++) {
- own_rx = le16_to_cpu(*he_own_rx);
- own_rx = (own_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;
- own_tx = le16_to_cpu(*he_own_tx);
- own_tx = (own_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;
- peer_rx = le16_to_cpu(*he_peer_rx);
- peer_rx = (peer_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;
- peer_tx = le16_to_cpu(*he_peer_tx);
- peer_tx = (peer_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;
- if (peer_tx != IEEE80211_HE_MCS_NOT_SUPPORTED) {
- if (own_rx == IEEE80211_HE_MCS_NOT_SUPPORTED)
- peer_tx = IEEE80211_HE_MCS_NOT_SUPPORTED;
- else if (own_rx < peer_tx)
- peer_tx = own_rx;
- }
- if (peer_rx != IEEE80211_HE_MCS_NOT_SUPPORTED) {
- if (own_tx == IEEE80211_HE_MCS_NOT_SUPPORTED)
- peer_rx = IEEE80211_HE_MCS_NOT_SUPPORTED;
- else if (own_tx < peer_rx)
- peer_rx = own_tx;
- }
- *he_peer_rx &=
- ~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2);
- *he_peer_rx |= cpu_to_le16(peer_rx << i * 2);
- *he_peer_tx &=
- ~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2);
- *he_peer_tx |= cpu_to_le16(peer_tx << i * 2);
- }
- }
- void
- ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_supported_band *sband,
- const u8 *he_cap_ie, u8 he_cap_len,
- const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
- struct link_sta_info *link_sta)
- {
- struct ieee80211_sta_he_cap *he_cap = &link_sta->pub->he_cap;
- const struct ieee80211_sta_he_cap *own_he_cap_ptr;
- struct ieee80211_sta_he_cap own_he_cap;
- struct ieee80211_he_cap_elem *he_cap_ie_elem = (void *)he_cap_ie;
- u8 he_ppe_size;
- u8 mcs_nss_size;
- u8 he_total_size;
- bool own_160, peer_160, own_80p80, peer_80p80;
- memset(he_cap, 0, sizeof(*he_cap));
- if (!he_cap_ie)
- return;
- own_he_cap_ptr =
- ieee80211_get_he_iftype_cap(sband,
- ieee80211_vif_type_p2p(&sdata->vif));
- if (!own_he_cap_ptr)
- return;
- own_he_cap = *own_he_cap_ptr;
- /* Make sure size is OK */
- mcs_nss_size = ieee80211_he_mcs_nss_size(he_cap_ie_elem);
- he_ppe_size =
- ieee80211_he_ppe_size(he_cap_ie[sizeof(he_cap->he_cap_elem) +
- mcs_nss_size],
- he_cap_ie_elem->phy_cap_info);
- he_total_size = sizeof(he_cap->he_cap_elem) + mcs_nss_size +
- he_ppe_size;
- if (he_cap_len < he_total_size)
- return;
- memcpy(&he_cap->he_cap_elem, he_cap_ie, sizeof(he_cap->he_cap_elem));
- /* HE Tx/Rx HE MCS NSS Support Field */
- memcpy(&he_cap->he_mcs_nss_supp,
- &he_cap_ie[sizeof(he_cap->he_cap_elem)], mcs_nss_size);
- /* Check if there are (optional) PPE Thresholds */
- if (he_cap->he_cap_elem.phy_cap_info[6] &
- IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT)
- memcpy(he_cap->ppe_thres,
- &he_cap_ie[sizeof(he_cap->he_cap_elem) + mcs_nss_size],
- he_ppe_size);
- he_cap->has_he = true;
- link_sta->cur_max_bandwidth = ieee80211_sta_cap_rx_bw(link_sta);
- link_sta->pub->bandwidth = ieee80211_sta_cur_vht_bw(link_sta);
- if (sband->band == NL80211_BAND_6GHZ && he_6ghz_capa)
- ieee80211_update_from_he_6ghz_capa(he_6ghz_capa, link_sta);
- ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_80,
- &he_cap->he_mcs_nss_supp.rx_mcs_80,
- &own_he_cap.he_mcs_nss_supp.tx_mcs_80,
- &he_cap->he_mcs_nss_supp.tx_mcs_80);
- own_160 = own_he_cap.he_cap_elem.phy_cap_info[0] &
- IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
- peer_160 = he_cap->he_cap_elem.phy_cap_info[0] &
- IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
- if (peer_160 && own_160) {
- ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_160,
- &he_cap->he_mcs_nss_supp.rx_mcs_160,
- &own_he_cap.he_mcs_nss_supp.tx_mcs_160,
- &he_cap->he_mcs_nss_supp.tx_mcs_160);
- } else if (peer_160 && !own_160) {
- ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.rx_mcs_160);
- ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.tx_mcs_160);
- he_cap->he_cap_elem.phy_cap_info[0] &=
- ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
- }
- own_80p80 = own_he_cap.he_cap_elem.phy_cap_info[0] &
- IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
- peer_80p80 = he_cap->he_cap_elem.phy_cap_info[0] &
- IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
- if (peer_80p80 && own_80p80) {
- ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_80p80,
- &he_cap->he_mcs_nss_supp.rx_mcs_80p80,
- &own_he_cap.he_mcs_nss_supp.tx_mcs_80p80,
- &he_cap->he_mcs_nss_supp.tx_mcs_80p80);
- } else if (peer_80p80 && !own_80p80) {
- ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.rx_mcs_80p80);
- ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.tx_mcs_80p80);
- he_cap->he_cap_elem.phy_cap_info[0] &=
- ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
- }
- }
- void
- ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
- const struct ieee80211_he_operation *he_op_ie)
- {
- memset(&vif->bss_conf.he_oper, 0, sizeof(vif->bss_conf.he_oper));
- if (!he_op_ie)
- return;
- vif->bss_conf.he_oper.params = __le32_to_cpu(he_op_ie->he_oper_params);
- vif->bss_conf.he_oper.nss_set = __le16_to_cpu(he_op_ie->he_mcs_nss_set);
- }
- void
- ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
- const struct ieee80211_he_spr *he_spr_ie_elem)
- {
- struct ieee80211_he_obss_pd *he_obss_pd =
- &vif->bss_conf.he_obss_pd;
- const u8 *data;
- memset(he_obss_pd, 0, sizeof(*he_obss_pd));
- if (!he_spr_ie_elem)
- return;
- data = he_spr_ie_elem->optional;
- if (he_spr_ie_elem->he_sr_control &
- IEEE80211_HE_SPR_NON_SRG_OFFSET_PRESENT)
- data++;
- if (he_spr_ie_elem->he_sr_control &
- IEEE80211_HE_SPR_SRG_INFORMATION_PRESENT) {
- he_obss_pd->max_offset = *data++;
- he_obss_pd->min_offset = *data++;
- he_obss_pd->enable = true;
- }
- }
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