1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * HE handling 4 * 5 * Copyright(c) 2017 Intel Deutschland GmbH 6 * Copyright(c) 2019 - 2020 Intel Corporation 7 */ 8 9#include "ieee80211_i.h" 10 11static void 12ieee80211_update_from_he_6ghz_capa(const struct ieee80211_he_6ghz_capa *he_6ghz_capa, 13 struct sta_info *sta) 14{ 15 enum ieee80211_smps_mode smps_mode; 16 17 if (sta->sdata->vif.type == NL80211_IFTYPE_AP || 18 sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { 19 switch (le16_get_bits(he_6ghz_capa->capa, 20 IEEE80211_HE_6GHZ_CAP_SM_PS)) { 21 case WLAN_HT_CAP_SM_PS_INVALID: 22 case WLAN_HT_CAP_SM_PS_STATIC: 23 smps_mode = IEEE80211_SMPS_STATIC; 24 break; 25 case WLAN_HT_CAP_SM_PS_DYNAMIC: 26 smps_mode = IEEE80211_SMPS_DYNAMIC; 27 break; 28 case WLAN_HT_CAP_SM_PS_DISABLED: 29 smps_mode = IEEE80211_SMPS_OFF; 30 break; 31 } 32 33 sta->sta.smps_mode = smps_mode; 34 } else { 35 sta->sta.smps_mode = IEEE80211_SMPS_OFF; 36 } 37 38 switch (le16_get_bits(he_6ghz_capa->capa, 39 IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN)) { 40 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454: 41 sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_11454; 42 break; 43 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991: 44 sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_7991; 45 break; 46 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895: 47 default: 48 sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_3895; 49 break; 50 } 51 52 sta->sta.he_6ghz_capa = *he_6ghz_capa; 53} 54 55void 56ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 57 struct ieee80211_supported_band *sband, 58 const u8 *he_cap_ie, u8 he_cap_len, 59 const struct ieee80211_he_6ghz_capa *he_6ghz_capa, 60 struct sta_info *sta) 61{ 62 struct ieee80211_sta_he_cap *he_cap = &sta->sta.he_cap; 63 struct ieee80211_he_cap_elem *he_cap_ie_elem = (void *)he_cap_ie; 64 u8 he_ppe_size; 65 u8 mcs_nss_size; 66 u8 he_total_size; 67 68 memset(he_cap, 0, sizeof(*he_cap)); 69 70 if (!he_cap_ie || !ieee80211_get_he_sta_cap(sband)) 71 return; 72 73 /* Make sure size is OK */ 74 mcs_nss_size = ieee80211_he_mcs_nss_size(he_cap_ie_elem); 75 he_ppe_size = 76 ieee80211_he_ppe_size(he_cap_ie[sizeof(he_cap->he_cap_elem) + 77 mcs_nss_size], 78 he_cap_ie_elem->phy_cap_info); 79 he_total_size = sizeof(he_cap->he_cap_elem) + mcs_nss_size + 80 he_ppe_size; 81 if (he_cap_len < he_total_size) 82 return; 83 84 memcpy(&he_cap->he_cap_elem, he_cap_ie, sizeof(he_cap->he_cap_elem)); 85 86 /* HE Tx/Rx HE MCS NSS Support Field */ 87 memcpy(&he_cap->he_mcs_nss_supp, 88 &he_cap_ie[sizeof(he_cap->he_cap_elem)], mcs_nss_size); 89 90 /* Check if there are (optional) PPE Thresholds */ 91 if (he_cap->he_cap_elem.phy_cap_info[6] & 92 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) 93 memcpy(he_cap->ppe_thres, 94 &he_cap_ie[sizeof(he_cap->he_cap_elem) + mcs_nss_size], 95 he_ppe_size); 96 97 he_cap->has_he = true; 98 99 sta->cur_max_bandwidth = ieee80211_sta_cap_rx_bw(sta); 100 sta->sta.bandwidth = ieee80211_sta_cur_vht_bw(sta); 101 102 if (sband->band == NL80211_BAND_6GHZ && he_6ghz_capa) 103 ieee80211_update_from_he_6ghz_capa(he_6ghz_capa, sta); 104} 105 106void 107ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, 108 const struct ieee80211_he_operation *he_op_ie) 109{ 110 memset(&vif->bss_conf.he_oper, 0, sizeof(vif->bss_conf.he_oper)); 111 if (!he_op_ie) 112 return; 113 114 vif->bss_conf.he_oper.params = __le32_to_cpu(he_op_ie->he_oper_params); 115 vif->bss_conf.he_oper.nss_set = __le16_to_cpu(he_op_ie->he_mcs_nss_set); 116} 117 118void 119ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif, 120 const struct ieee80211_he_spr *he_spr_ie_elem) 121{ 122 struct ieee80211_he_obss_pd *he_obss_pd = 123 &vif->bss_conf.he_obss_pd; 124 const u8 *data; 125 126 memset(he_obss_pd, 0, sizeof(*he_obss_pd)); 127 128 if (!he_spr_ie_elem) 129 return; 130 data = he_spr_ie_elem->optional; 131 132 if (he_spr_ie_elem->he_sr_control & 133 IEEE80211_HE_SPR_NON_SRG_OFFSET_PRESENT) 134 data++; 135 if (he_spr_ie_elem->he_sr_control & 136 IEEE80211_HE_SPR_SRG_INFORMATION_PRESENT) { 137 he_obss_pd->max_offset = *data++; 138 he_obss_pd->min_offset = *data++; 139 he_obss_pd->enable = true; 140 } 141} 142