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// SPDX-License-Identifier: GPL-2.0-only
/*
* HE handling
*
* Copyright(c) 2017 Intel Deutschland GmbH
* Copyright(c) 2019 - 2020 Intel Corporation
*/
#include "ieee80211_i.h"
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,
struct sta_info *sta)
{
struct ieee80211_sta_he_cap *he_cap = &sta->sta.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;
memset(he_cap, 0, sizeof(*he_cap));
if (!he_cap_ie || !ieee80211_get_he_sta_cap(sband))
return;
/* 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;
sta->cur_max_bandwidth = ieee80211_sta_cap_rx_bw(sta);
sta->sta.bandwidth = ieee80211_sta_cur_vht_bw(sta);
}
void
ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
const struct ieee80211_he_operation *he_op_ie_elem)
{
struct ieee80211_he_operation *he_operation =
&vif->bss_conf.he_operation;
if (!he_op_ie_elem) {
memset(he_operation, 0, sizeof(*he_operation));
return;
}
vif->bss_conf.he_operation = *he_op_ie_elem;
}
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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