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 54 void 55 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, 56 const struct ieee80211_he_operation *he_op_ie_elem) 57 { 58 struct ieee80211_he_operation *he_operation = 59 &vif->bss_conf.he_operation; 60 61 if (!he_op_ie_elem) { 62 memset(he_operation, 0, sizeof(*he_operation)); 63 return; 64 } 65 66 vif->bss_conf.he_operation = *he_op_ie_elem; 67 } 68 69 void 70 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif, 71 const struct ieee80211_he_spr *he_spr_ie_elem) 72 { 73 struct ieee80211_he_obss_pd *he_obss_pd = 74 &vif->bss_conf.he_obss_pd; 75 const u8 *data; 76 77 memset(he_obss_pd, 0, sizeof(*he_obss_pd)); 78 79 if (!he_spr_ie_elem) 80 return; 81 data = he_spr_ie_elem->optional; 82 83 if (he_spr_ie_elem->he_sr_control & 84 IEEE80211_HE_SPR_NON_SRG_OFFSET_PRESENT) 85 data++; 86 if (he_spr_ie_elem->he_sr_control & 87 IEEE80211_HE_SPR_SRG_INFORMATION_PRESENT) { 88 he_obss_pd->max_offset = *data++; 89 he_obss_pd->min_offset = *data++; 90 he_obss_pd->enable = true; 91 } 92 } 93