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79 lines
2.3 KiB
79 lines
2.3 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* EHT handling |
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* |
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* Copyright(c) 2021-2022 Intel Corporation |
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*/ |
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#include "ieee80211_i.h" |
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void |
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ieee80211_eht_cap_ie_to_sta_eht_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_eht_cap_elem *eht_cap_ie_elem, |
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u8 eht_cap_len, |
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struct link_sta_info *link_sta) |
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{ |
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struct ieee80211_sta_eht_cap *eht_cap = &link_sta->pub->eht_cap; |
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struct ieee80211_he_cap_elem *he_cap_ie_elem = (void *)he_cap_ie; |
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u8 eht_ppe_size = 0; |
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u8 mcs_nss_size; |
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u8 eht_total_size = sizeof(eht_cap->eht_cap_elem); |
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u8 *pos = (u8 *)eht_cap_ie_elem; |
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memset(eht_cap, 0, sizeof(*eht_cap)); |
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if (!eht_cap_ie_elem || |
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!ieee80211_get_eht_iftype_cap(sband, |
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ieee80211_vif_type_p2p(&sdata->vif))) |
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return; |
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mcs_nss_size = ieee80211_eht_mcs_nss_size(he_cap_ie_elem, |
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&eht_cap_ie_elem->fixed, |
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sdata->vif.type == |
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NL80211_IFTYPE_STATION); |
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eht_total_size += mcs_nss_size; |
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/* Calculate the PPE thresholds length only if the header is present */ |
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if (eht_cap_ie_elem->fixed.phy_cap_info[5] & |
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IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT) { |
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u16 eht_ppe_hdr; |
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if (eht_cap_len < eht_total_size + sizeof(u16)) |
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return; |
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eht_ppe_hdr = get_unaligned_le16(eht_cap_ie_elem->optional + mcs_nss_size); |
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eht_ppe_size = |
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ieee80211_eht_ppe_size(eht_ppe_hdr, |
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eht_cap_ie_elem->fixed.phy_cap_info); |
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eht_total_size += eht_ppe_size; |
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/* we calculate as if NSS > 8 are valid, but don't handle that */ |
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if (eht_ppe_size > sizeof(eht_cap->eht_ppe_thres)) |
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return; |
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} |
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if (eht_cap_len < eht_total_size) |
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return; |
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/* Copy the static portion of the EHT capabilities */ |
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memcpy(&eht_cap->eht_cap_elem, pos, sizeof(eht_cap->eht_cap_elem)); |
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pos += sizeof(eht_cap->eht_cap_elem); |
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/* Copy MCS/NSS which depends on the peer capabilities */ |
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memset(&eht_cap->eht_mcs_nss_supp, 0, |
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sizeof(eht_cap->eht_mcs_nss_supp)); |
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memcpy(&eht_cap->eht_mcs_nss_supp, pos, mcs_nss_size); |
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if (eht_ppe_size) |
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memcpy(eht_cap->eht_ppe_thres, |
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&eht_cap_ie_elem->optional[mcs_nss_size], |
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eht_ppe_size); |
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eht_cap->has_eht = true; |
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link_sta->cur_max_bandwidth = ieee80211_sta_cap_rx_bw(link_sta); |
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link_sta->pub->bandwidth = ieee80211_sta_cur_vht_bw(link_sta); |
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}
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