142 строки
3.9 KiB
C
142 строки
3.9 KiB
C
// 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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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_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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memset(he_cap, 0, sizeof(*he_cap));
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if (!he_cap_ie || !ieee80211_get_he_sta_cap(sband))
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return;
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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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}
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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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