| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * EHT handling |
| * |
| * Copyright(c) 2021-2022 Intel Corporation |
| */ |
| |
| #include "ieee80211_i.h" |
| |
| void |
| ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata, |
| struct ieee80211_supported_band *sband, |
| const u8 *he_cap_ie, u8 he_cap_len, |
| const struct ieee80211_eht_cap_elem *eht_cap_ie_elem, |
| u8 eht_cap_len, struct sta_info *sta) |
| { |
| struct ieee80211_sta_eht_cap *eht_cap = &sta->sta.eht_cap; |
| struct ieee80211_he_cap_elem *he_cap_ie_elem = (void *)he_cap_ie; |
| u8 eht_ppe_size = 0; |
| u8 mcs_nss_size; |
| u8 eht_total_size = sizeof(eht_cap->eht_cap_elem); |
| u8 *pos = (u8 *)eht_cap_ie_elem; |
| |
| memset(eht_cap, 0, sizeof(*eht_cap)); |
| |
| if (!eht_cap_ie_elem || |
| !ieee80211_get_eht_iftype_cap(sband, |
| ieee80211_vif_type_p2p(&sdata->vif))) |
| return; |
| |
| mcs_nss_size = ieee80211_eht_mcs_nss_size(he_cap_ie_elem, |
| &eht_cap_ie_elem->fixed); |
| |
| eht_total_size += mcs_nss_size; |
| |
| /* Calculate the PPE thresholds length only if the header is present */ |
| if (eht_cap_ie_elem->fixed.phy_cap_info[5] & |
| IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT) { |
| u16 eht_ppe_hdr; |
| |
| if (eht_cap_len < eht_total_size + sizeof(u16)) |
| return; |
| |
| eht_ppe_hdr = get_unaligned_le16(eht_cap_ie_elem->optional + mcs_nss_size); |
| eht_ppe_size = |
| ieee80211_eht_ppe_size(eht_ppe_hdr, |
| eht_cap_ie_elem->fixed.phy_cap_info); |
| eht_total_size += eht_ppe_size; |
| |
| /* we calculate as if NSS > 8 are valid, but don't handle that */ |
| if (eht_ppe_size > sizeof(eht_cap->eht_ppe_thres)) |
| return; |
| } |
| |
| if (eht_cap_len < eht_total_size) |
| return; |
| |
| /* Copy the static portion of the EHT capabilities */ |
| memcpy(&eht_cap->eht_cap_elem, pos, sizeof(eht_cap->eht_cap_elem)); |
| pos += sizeof(eht_cap->eht_cap_elem); |
| |
| /* Copy MCS/NSS which depends on the peer capabilities */ |
| memset(&eht_cap->eht_mcs_nss_supp, 0, |
| sizeof(eht_cap->eht_mcs_nss_supp)); |
| memcpy(&eht_cap->eht_mcs_nss_supp, pos, mcs_nss_size); |
| |
| if (eht_ppe_size) |
| memcpy(eht_cap->eht_ppe_thres, |
| &eht_cap_ie_elem->optional[mcs_nss_size], |
| eht_ppe_size); |
| |
| eht_cap->has_eht = true; |
| |
| sta->cur_max_bandwidth = ieee80211_sta_cap_rx_bw(sta); |
| sta->sta.bandwidth = ieee80211_sta_cur_vht_bw(sta); |
| } |