1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * HE handling 4 * 5 * Copyright(c) 2017 Intel Deutschland GmbH 6 */ 7 8 #include "ieee80211_i.h" 9 10 void 11 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 12 struct ieee80211_supported_band *sband, 13 const u8 *he_cap_ie, u8 he_cap_len, 14 struct sta_info *sta) 15 { 16 struct ieee80211_sta_he_cap *he_cap = &sta->sta.he_cap; 17 struct ieee80211_he_cap_elem *he_cap_ie_elem = (void *)he_cap_ie; 18 u8 he_ppe_size; 19 u8 mcs_nss_size; 20 u8 he_total_size; 21 22 memset(he_cap, 0, sizeof(*he_cap)); 23 24 if (!he_cap_ie || !ieee80211_get_he_sta_cap(sband)) 25 return; 26 27 /* Make sure size is OK */ 28 mcs_nss_size = ieee80211_he_mcs_nss_size(he_cap_ie_elem); 29 he_ppe_size = 30 ieee80211_he_ppe_size(he_cap_ie[sizeof(he_cap->he_cap_elem) + 31 mcs_nss_size], 32 he_cap_ie_elem->phy_cap_info); 33 he_total_size = sizeof(he_cap->he_cap_elem) + mcs_nss_size + 34 he_ppe_size; 35 if (he_cap_len < he_total_size) 36 return; 37 38 memcpy(&he_cap->he_cap_elem, he_cap_ie, sizeof(he_cap->he_cap_elem)); 39 40 /* HE Tx/Rx HE MCS NSS Support Field */ 41 memcpy(&he_cap->he_mcs_nss_supp, 42 &he_cap_ie[sizeof(he_cap->he_cap_elem)], mcs_nss_size); 43 44 /* Check if there are (optional) PPE Thresholds */ 45 if (he_cap->he_cap_elem.phy_cap_info[6] & 46 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) 47 memcpy(he_cap->ppe_thres, 48 &he_cap_ie[sizeof(he_cap->he_cap_elem) + mcs_nss_size], 49 he_ppe_size); 50 51 he_cap->has_he = true; 52 } 53