1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * HE handling 4 * 5 * Copyright(c) 2017 Intel Deutschland GmbH 6 * Copyright(c) 2019 - 2023 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 link_sta_info *link_sta) 14 { 15 struct sta_info *sta = link_sta->sta; 16 enum ieee80211_smps_mode smps_mode; 17 18 if (sta->sdata->vif.type == NL80211_IFTYPE_AP || 19 sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { 20 switch (le16_get_bits(he_6ghz_capa->capa, 21 IEEE80211_HE_6GHZ_CAP_SM_PS)) { 22 case WLAN_HT_CAP_SM_PS_INVALID: 23 case WLAN_HT_CAP_SM_PS_STATIC: 24 smps_mode = IEEE80211_SMPS_STATIC; 25 break; 26 case WLAN_HT_CAP_SM_PS_DYNAMIC: 27 smps_mode = IEEE80211_SMPS_DYNAMIC; 28 break; 29 case WLAN_HT_CAP_SM_PS_DISABLED: 30 smps_mode = IEEE80211_SMPS_OFF; 31 break; 32 } 33 34 link_sta->pub->smps_mode = smps_mode; 35 } else { 36 link_sta->pub->smps_mode = IEEE80211_SMPS_OFF; 37 } 38 39 switch (le16_get_bits(he_6ghz_capa->capa, 40 IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN)) { 41 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454: 42 link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_11454; 43 break; 44 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991: 45 link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_7991; 46 break; 47 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895: 48 default: 49 link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_3895; 50 break; 51 } 52 53 ieee80211_sta_recalc_aggregates(&sta->sta); 54 55 link_sta->pub->he_6ghz_capa = *he_6ghz_capa; 56 } 57 58 static void ieee80211_he_mcs_disable(__le16 *he_mcs) 59 { 60 u32 i; 61 62 for (i = 0; i < 8; i++) 63 *he_mcs |= cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2); 64 } 65 66 static void ieee80211_he_mcs_intersection(__le16 *he_own_rx, __le16 *he_peer_rx, 67 __le16 *he_own_tx, __le16 *he_peer_tx) 68 { 69 u32 i; 70 u16 own_rx, own_tx, peer_rx, peer_tx; 71 72 for (i = 0; i < 8; i++) { 73 own_rx = le16_to_cpu(*he_own_rx); 74 own_rx = (own_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; 75 76 own_tx = le16_to_cpu(*he_own_tx); 77 own_tx = (own_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; 78 79 peer_rx = le16_to_cpu(*he_peer_rx); 80 peer_rx = (peer_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; 81 82 peer_tx = le16_to_cpu(*he_peer_tx); 83 peer_tx = (peer_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; 84 85 if (peer_tx != IEEE80211_HE_MCS_NOT_SUPPORTED) { 86 if (own_rx == IEEE80211_HE_MCS_NOT_SUPPORTED) 87 peer_tx = IEEE80211_HE_MCS_NOT_SUPPORTED; 88 else if (own_rx < peer_tx) 89 peer_tx = own_rx; 90 } 91 92 if (peer_rx != IEEE80211_HE_MCS_NOT_SUPPORTED) { 93 if (own_tx == IEEE80211_HE_MCS_NOT_SUPPORTED) 94 peer_rx = IEEE80211_HE_MCS_NOT_SUPPORTED; 95 else if (own_tx < peer_rx) 96 peer_rx = own_tx; 97 } 98 99 *he_peer_rx &= 100 ~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2); 101 *he_peer_rx |= cpu_to_le16(peer_rx << i * 2); 102 103 *he_peer_tx &= 104 ~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2); 105 *he_peer_tx |= cpu_to_le16(peer_tx << i * 2); 106 } 107 } 108 109 void 110 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 111 struct ieee80211_supported_band *sband, 112 const u8 *he_cap_ie, u8 he_cap_len, 113 const struct ieee80211_he_6ghz_capa *he_6ghz_capa, 114 struct link_sta_info *link_sta) 115 { 116 struct ieee80211_sta_he_cap *he_cap = &link_sta->pub->he_cap; 117 const struct ieee80211_sta_he_cap *own_he_cap_ptr; 118 struct ieee80211_sta_he_cap own_he_cap; 119 struct ieee80211_he_cap_elem *he_cap_ie_elem = (void *)he_cap_ie; 120 u8 he_ppe_size; 121 u8 mcs_nss_size; 122 u8 he_total_size; 123 bool own_160, peer_160, own_80p80, peer_80p80; 124 125 memset(he_cap, 0, sizeof(*he_cap)); 126 127 if (!he_cap_ie) 128 return; 129 130 own_he_cap_ptr = 131 ieee80211_get_he_iftype_cap(sband, 132 ieee80211_vif_type_p2p(&sdata->vif)); 133 if (!own_he_cap_ptr) 134 return; 135 136 own_he_cap = *own_he_cap_ptr; 137 138 /* Make sure size is OK */ 139 mcs_nss_size = ieee80211_he_mcs_nss_size(he_cap_ie_elem); 140 he_ppe_size = 141 ieee80211_he_ppe_size(he_cap_ie[sizeof(he_cap->he_cap_elem) + 142 mcs_nss_size], 143 he_cap_ie_elem->phy_cap_info); 144 he_total_size = sizeof(he_cap->he_cap_elem) + mcs_nss_size + 145 he_ppe_size; 146 if (he_cap_len < he_total_size) 147 return; 148 149 memcpy(&he_cap->he_cap_elem, he_cap_ie, sizeof(he_cap->he_cap_elem)); 150 151 /* HE Tx/Rx HE MCS NSS Support Field */ 152 memcpy(&he_cap->he_mcs_nss_supp, 153 &he_cap_ie[sizeof(he_cap->he_cap_elem)], mcs_nss_size); 154 155 /* Check if there are (optional) PPE Thresholds */ 156 if (he_cap->he_cap_elem.phy_cap_info[6] & 157 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) 158 memcpy(he_cap->ppe_thres, 159 &he_cap_ie[sizeof(he_cap->he_cap_elem) + mcs_nss_size], 160 he_ppe_size); 161 162 he_cap->has_he = true; 163 164 link_sta->cur_max_bandwidth = ieee80211_sta_cap_rx_bw(link_sta); 165 link_sta->pub->bandwidth = ieee80211_sta_cur_vht_bw(link_sta); 166 167 if (sband->band == NL80211_BAND_6GHZ && he_6ghz_capa) 168 ieee80211_update_from_he_6ghz_capa(he_6ghz_capa, link_sta); 169 170 ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_80, 171 &he_cap->he_mcs_nss_supp.rx_mcs_80, 172 &own_he_cap.he_mcs_nss_supp.tx_mcs_80, 173 &he_cap->he_mcs_nss_supp.tx_mcs_80); 174 175 own_160 = own_he_cap.he_cap_elem.phy_cap_info[0] & 176 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; 177 peer_160 = he_cap->he_cap_elem.phy_cap_info[0] & 178 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; 179 180 if (peer_160 && own_160) { 181 ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_160, 182 &he_cap->he_mcs_nss_supp.rx_mcs_160, 183 &own_he_cap.he_mcs_nss_supp.tx_mcs_160, 184 &he_cap->he_mcs_nss_supp.tx_mcs_160); 185 } else if (peer_160 && !own_160) { 186 ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.rx_mcs_160); 187 ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.tx_mcs_160); 188 he_cap->he_cap_elem.phy_cap_info[0] &= 189 ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; 190 } 191 192 own_80p80 = own_he_cap.he_cap_elem.phy_cap_info[0] & 193 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G; 194 peer_80p80 = he_cap->he_cap_elem.phy_cap_info[0] & 195 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G; 196 197 if (peer_80p80 && own_80p80) { 198 ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_80p80, 199 &he_cap->he_mcs_nss_supp.rx_mcs_80p80, 200 &own_he_cap.he_mcs_nss_supp.tx_mcs_80p80, 201 &he_cap->he_mcs_nss_supp.tx_mcs_80p80); 202 } else if (peer_80p80 && !own_80p80) { 203 ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.rx_mcs_80p80); 204 ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.tx_mcs_80p80); 205 he_cap->he_cap_elem.phy_cap_info[0] &= 206 ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G; 207 } 208 } 209 210 void 211 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, 212 const struct ieee80211_he_operation *he_op_ie) 213 { 214 memset(&vif->bss_conf.he_oper, 0, sizeof(vif->bss_conf.he_oper)); 215 if (!he_op_ie) 216 return; 217 218 vif->bss_conf.he_oper.params = __le32_to_cpu(he_op_ie->he_oper_params); 219 vif->bss_conf.he_oper.nss_set = __le16_to_cpu(he_op_ie->he_mcs_nss_set); 220 } 221 222 void 223 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif, 224 const struct ieee80211_he_spr *he_spr_ie_elem) 225 { 226 struct ieee80211_he_obss_pd *he_obss_pd = 227 &vif->bss_conf.he_obss_pd; 228 const u8 *data; 229 230 memset(he_obss_pd, 0, sizeof(*he_obss_pd)); 231 232 if (!he_spr_ie_elem) 233 return; 234 data = he_spr_ie_elem->optional; 235 236 if (he_spr_ie_elem->he_sr_control & 237 IEEE80211_HE_SPR_NON_SRG_OFFSET_PRESENT) 238 data++; 239 if (he_spr_ie_elem->he_sr_control & 240 IEEE80211_HE_SPR_SRG_INFORMATION_PRESENT) { 241 he_obss_pd->max_offset = *data++; 242 he_obss_pd->min_offset = *data++; 243 he_obss_pd->enable = true; 244 } 245 } 246