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 11 static void 12 ieee80211_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 55 static void ieee80211_he_mcs_disable(__le16 *he_mcs) 56 { 57 u32 i; 58 59 for (i = 0; i < 8; i++) 60 *he_mcs |= cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2); 61 } 62 63 static void ieee80211_he_mcs_intersection(__le16 *he_own_rx, __le16 *he_peer_rx, 64 __le16 *he_own_tx, __le16 *he_peer_tx) 65 { 66 u32 i; 67 u16 own_rx, own_tx, peer_rx, peer_tx; 68 69 for (i = 0; i < 8; i++) { 70 own_rx = le16_to_cpu(*he_own_rx); 71 own_rx = (own_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; 72 73 own_tx = le16_to_cpu(*he_own_tx); 74 own_tx = (own_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; 75 76 peer_rx = le16_to_cpu(*he_peer_rx); 77 peer_rx = (peer_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; 78 79 peer_tx = le16_to_cpu(*he_peer_tx); 80 peer_tx = (peer_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; 81 82 if (peer_tx != IEEE80211_HE_MCS_NOT_SUPPORTED) { 83 if (own_rx == IEEE80211_HE_MCS_NOT_SUPPORTED) 84 peer_tx = IEEE80211_HE_MCS_NOT_SUPPORTED; 85 else if (own_rx < peer_tx) 86 peer_tx = own_rx; 87 } 88 89 if (peer_rx != IEEE80211_HE_MCS_NOT_SUPPORTED) { 90 if (own_tx == IEEE80211_HE_MCS_NOT_SUPPORTED) 91 peer_rx = IEEE80211_HE_MCS_NOT_SUPPORTED; 92 else if (own_tx < peer_rx) 93 peer_rx = own_tx; 94 } 95 96 *he_peer_rx &= 97 ~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2); 98 *he_peer_rx |= cpu_to_le16(peer_rx << i * 2); 99 100 *he_peer_tx &= 101 ~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2); 102 *he_peer_tx |= cpu_to_le16(peer_tx << i * 2); 103 } 104 } 105 106 void 107 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 108 struct ieee80211_supported_band *sband, 109 const u8 *he_cap_ie, u8 he_cap_len, 110 const struct ieee80211_he_6ghz_capa *he_6ghz_capa, 111 struct sta_info *sta) 112 { 113 struct ieee80211_sta_he_cap *he_cap = &sta->sta.he_cap; 114 struct ieee80211_sta_he_cap own_he_cap = sband->iftype_data->he_cap; 115 struct ieee80211_he_cap_elem *he_cap_ie_elem = (void *)he_cap_ie; 116 u8 he_ppe_size; 117 u8 mcs_nss_size; 118 u8 he_total_size; 119 bool own_160, peer_160, own_80p80, peer_80p80; 120 121 memset(he_cap, 0, sizeof(*he_cap)); 122 123 if (!he_cap_ie || !ieee80211_get_he_sta_cap(sband)) 124 return; 125 126 /* Make sure size is OK */ 127 mcs_nss_size = ieee80211_he_mcs_nss_size(he_cap_ie_elem); 128 he_ppe_size = 129 ieee80211_he_ppe_size(he_cap_ie[sizeof(he_cap->he_cap_elem) + 130 mcs_nss_size], 131 he_cap_ie_elem->phy_cap_info); 132 he_total_size = sizeof(he_cap->he_cap_elem) + mcs_nss_size + 133 he_ppe_size; 134 if (he_cap_len < he_total_size) 135 return; 136 137 memcpy(&he_cap->he_cap_elem, he_cap_ie, sizeof(he_cap->he_cap_elem)); 138 139 /* HE Tx/Rx HE MCS NSS Support Field */ 140 memcpy(&he_cap->he_mcs_nss_supp, 141 &he_cap_ie[sizeof(he_cap->he_cap_elem)], mcs_nss_size); 142 143 /* Check if there are (optional) PPE Thresholds */ 144 if (he_cap->he_cap_elem.phy_cap_info[6] & 145 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) 146 memcpy(he_cap->ppe_thres, 147 &he_cap_ie[sizeof(he_cap->he_cap_elem) + mcs_nss_size], 148 he_ppe_size); 149 150 he_cap->has_he = true; 151 152 sta->cur_max_bandwidth = ieee80211_sta_cap_rx_bw(sta); 153 sta->sta.bandwidth = ieee80211_sta_cur_vht_bw(sta); 154 155 if (sband->band == NL80211_BAND_6GHZ && he_6ghz_capa) 156 ieee80211_update_from_he_6ghz_capa(he_6ghz_capa, sta); 157 158 ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_80, 159 &he_cap->he_mcs_nss_supp.rx_mcs_80, 160 &own_he_cap.he_mcs_nss_supp.tx_mcs_80, 161 &he_cap->he_mcs_nss_supp.tx_mcs_80); 162 163 own_160 = own_he_cap.he_cap_elem.phy_cap_info[0] & 164 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; 165 peer_160 = he_cap->he_cap_elem.phy_cap_info[0] & 166 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; 167 168 if (peer_160 && own_160) { 169 ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_160, 170 &he_cap->he_mcs_nss_supp.rx_mcs_160, 171 &own_he_cap.he_mcs_nss_supp.tx_mcs_160, 172 &he_cap->he_mcs_nss_supp.tx_mcs_160); 173 } else if (peer_160 && !own_160) { 174 ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.rx_mcs_160); 175 ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.tx_mcs_160); 176 he_cap->he_cap_elem.phy_cap_info[0] &= 177 ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; 178 } 179 180 own_80p80 = own_he_cap.he_cap_elem.phy_cap_info[0] & 181 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G; 182 peer_80p80 = he_cap->he_cap_elem.phy_cap_info[0] & 183 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G; 184 185 if (peer_80p80 && own_80p80) { 186 ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_80p80, 187 &he_cap->he_mcs_nss_supp.rx_mcs_80p80, 188 &own_he_cap.he_mcs_nss_supp.tx_mcs_80p80, 189 &he_cap->he_mcs_nss_supp.tx_mcs_80p80); 190 } else if (peer_80p80 && !own_80p80) { 191 ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.rx_mcs_80p80); 192 ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.tx_mcs_80p80); 193 he_cap->he_cap_elem.phy_cap_info[0] &= 194 ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G; 195 } 196 } 197 198 void 199 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, 200 const struct ieee80211_he_operation *he_op_ie) 201 { 202 memset(&vif->bss_conf.he_oper, 0, sizeof(vif->bss_conf.he_oper)); 203 if (!he_op_ie) 204 return; 205 206 vif->bss_conf.he_oper.params = __le32_to_cpu(he_op_ie->he_oper_params); 207 vif->bss_conf.he_oper.nss_set = __le16_to_cpu(he_op_ie->he_mcs_nss_set); 208 } 209 210 void 211 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif, 212 const struct ieee80211_he_spr *he_spr_ie_elem) 213 { 214 struct ieee80211_he_obss_pd *he_obss_pd = 215 &vif->bss_conf.he_obss_pd; 216 const u8 *data; 217 218 memset(he_obss_pd, 0, sizeof(*he_obss_pd)); 219 220 if (!he_spr_ie_elem) 221 return; 222 data = he_spr_ie_elem->optional; 223 224 if (he_spr_ie_elem->he_sr_control & 225 IEEE80211_HE_SPR_NON_SRG_OFFSET_PRESENT) 226 data++; 227 if (he_spr_ie_elem->he_sr_control & 228 IEEE80211_HE_SPR_SRG_INFORMATION_PRESENT) { 229 he_obss_pd->max_offset = *data++; 230 he_obss_pd->min_offset = *data++; 231 he_obss_pd->enable = true; 232 } 233 } 234