1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * HE handling 4 * 5 * Copyright(c) 2017 Intel Deutschland GmbH 6 * Copyright(c) 2019 - 2022 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 sta->sta.smps_mode = smps_mode; 35 } else { 36 sta->sta.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 sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_11454; 43 break; 44 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991: 45 sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_7991; 46 break; 47 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895: 48 default: 49 sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_3895; 50 break; 51 } 52 53 link_sta->pub->he_6ghz_capa = *he_6ghz_capa; 54 } 55 56 static void ieee80211_he_mcs_disable(__le16 *he_mcs) 57 { 58 u32 i; 59 60 for (i = 0; i < 8; i++) 61 *he_mcs |= cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2); 62 } 63 64 static void ieee80211_he_mcs_intersection(__le16 *he_own_rx, __le16 *he_peer_rx, 65 __le16 *he_own_tx, __le16 *he_peer_tx) 66 { 67 u32 i; 68 u16 own_rx, own_tx, peer_rx, peer_tx; 69 70 for (i = 0; i < 8; i++) { 71 own_rx = le16_to_cpu(*he_own_rx); 72 own_rx = (own_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; 73 74 own_tx = le16_to_cpu(*he_own_tx); 75 own_tx = (own_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; 76 77 peer_rx = le16_to_cpu(*he_peer_rx); 78 peer_rx = (peer_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; 79 80 peer_tx = le16_to_cpu(*he_peer_tx); 81 peer_tx = (peer_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; 82 83 if (peer_tx != IEEE80211_HE_MCS_NOT_SUPPORTED) { 84 if (own_rx == IEEE80211_HE_MCS_NOT_SUPPORTED) 85 peer_tx = IEEE80211_HE_MCS_NOT_SUPPORTED; 86 else if (own_rx < peer_tx) 87 peer_tx = own_rx; 88 } 89 90 if (peer_rx != IEEE80211_HE_MCS_NOT_SUPPORTED) { 91 if (own_tx == IEEE80211_HE_MCS_NOT_SUPPORTED) 92 peer_rx = IEEE80211_HE_MCS_NOT_SUPPORTED; 93 else if (own_tx < peer_rx) 94 peer_rx = own_tx; 95 } 96 97 *he_peer_rx &= 98 ~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2); 99 *he_peer_rx |= cpu_to_le16(peer_rx << i * 2); 100 101 *he_peer_tx &= 102 ~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2); 103 *he_peer_tx |= cpu_to_le16(peer_tx << i * 2); 104 } 105 } 106 107 void 108 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 109 struct ieee80211_supported_band *sband, 110 const u8 *he_cap_ie, u8 he_cap_len, 111 const struct ieee80211_he_6ghz_capa *he_6ghz_capa, 112 struct link_sta_info *link_sta) 113 { 114 struct ieee80211_sta_he_cap *he_cap = &link_sta->pub->he_cap; 115 struct ieee80211_sta_he_cap own_he_cap; 116 struct ieee80211_he_cap_elem *he_cap_ie_elem = (void *)he_cap_ie; 117 u8 he_ppe_size; 118 u8 mcs_nss_size; 119 u8 he_total_size; 120 bool own_160, peer_160, own_80p80, peer_80p80; 121 122 memset(he_cap, 0, sizeof(*he_cap)); 123 124 if (!he_cap_ie || 125 !ieee80211_get_he_iftype_cap(sband, 126 ieee80211_vif_type_p2p(&sdata->vif))) 127 return; 128 129 own_he_cap = sband->iftype_data->he_cap; 130 131 /* Make sure size is OK */ 132 mcs_nss_size = ieee80211_he_mcs_nss_size(he_cap_ie_elem); 133 he_ppe_size = 134 ieee80211_he_ppe_size(he_cap_ie[sizeof(he_cap->he_cap_elem) + 135 mcs_nss_size], 136 he_cap_ie_elem->phy_cap_info); 137 he_total_size = sizeof(he_cap->he_cap_elem) + mcs_nss_size + 138 he_ppe_size; 139 if (he_cap_len < he_total_size) 140 return; 141 142 memcpy(&he_cap->he_cap_elem, he_cap_ie, sizeof(he_cap->he_cap_elem)); 143 144 /* HE Tx/Rx HE MCS NSS Support Field */ 145 memcpy(&he_cap->he_mcs_nss_supp, 146 &he_cap_ie[sizeof(he_cap->he_cap_elem)], mcs_nss_size); 147 148 /* Check if there are (optional) PPE Thresholds */ 149 if (he_cap->he_cap_elem.phy_cap_info[6] & 150 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) 151 memcpy(he_cap->ppe_thres, 152 &he_cap_ie[sizeof(he_cap->he_cap_elem) + mcs_nss_size], 153 he_ppe_size); 154 155 he_cap->has_he = true; 156 157 link_sta->cur_max_bandwidth = ieee80211_sta_cap_rx_bw(link_sta); 158 link_sta->pub->bandwidth = ieee80211_sta_cur_vht_bw(link_sta); 159 160 if (sband->band == NL80211_BAND_6GHZ && he_6ghz_capa) 161 ieee80211_update_from_he_6ghz_capa(he_6ghz_capa, link_sta); 162 163 ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_80, 164 &he_cap->he_mcs_nss_supp.rx_mcs_80, 165 &own_he_cap.he_mcs_nss_supp.tx_mcs_80, 166 &he_cap->he_mcs_nss_supp.tx_mcs_80); 167 168 own_160 = own_he_cap.he_cap_elem.phy_cap_info[0] & 169 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; 170 peer_160 = he_cap->he_cap_elem.phy_cap_info[0] & 171 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; 172 173 if (peer_160 && own_160) { 174 ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_160, 175 &he_cap->he_mcs_nss_supp.rx_mcs_160, 176 &own_he_cap.he_mcs_nss_supp.tx_mcs_160, 177 &he_cap->he_mcs_nss_supp.tx_mcs_160); 178 } else if (peer_160 && !own_160) { 179 ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.rx_mcs_160); 180 ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.tx_mcs_160); 181 he_cap->he_cap_elem.phy_cap_info[0] &= 182 ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; 183 } 184 185 own_80p80 = own_he_cap.he_cap_elem.phy_cap_info[0] & 186 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G; 187 peer_80p80 = he_cap->he_cap_elem.phy_cap_info[0] & 188 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G; 189 190 if (peer_80p80 && own_80p80) { 191 ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_80p80, 192 &he_cap->he_mcs_nss_supp.rx_mcs_80p80, 193 &own_he_cap.he_mcs_nss_supp.tx_mcs_80p80, 194 &he_cap->he_mcs_nss_supp.tx_mcs_80p80); 195 } else if (peer_80p80 && !own_80p80) { 196 ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.rx_mcs_80p80); 197 ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.tx_mcs_80p80); 198 he_cap->he_cap_elem.phy_cap_info[0] &= 199 ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G; 200 } 201 } 202 203 void 204 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, 205 const struct ieee80211_he_operation *he_op_ie) 206 { 207 memset(&vif->bss_conf.he_oper, 0, sizeof(vif->bss_conf.he_oper)); 208 if (!he_op_ie) 209 return; 210 211 vif->bss_conf.he_oper.params = __le32_to_cpu(he_op_ie->he_oper_params); 212 vif->bss_conf.he_oper.nss_set = __le16_to_cpu(he_op_ie->he_mcs_nss_set); 213 } 214 215 void 216 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif, 217 const struct ieee80211_he_spr *he_spr_ie_elem) 218 { 219 struct ieee80211_he_obss_pd *he_obss_pd = 220 &vif->bss_conf.he_obss_pd; 221 const u8 *data; 222 223 memset(he_obss_pd, 0, sizeof(*he_obss_pd)); 224 225 if (!he_spr_ie_elem) 226 return; 227 data = he_spr_ie_elem->optional; 228 229 if (he_spr_ie_elem->he_sr_control & 230 IEEE80211_HE_SPR_NON_SRG_OFFSET_PRESENT) 231 data++; 232 if (he_spr_ie_elem->he_sr_control & 233 IEEE80211_HE_SPR_SRG_INFORMATION_PRESENT) { 234 he_obss_pd->max_offset = *data++; 235 he_obss_pd->min_offset = *data++; 236 he_obss_pd->enable = true; 237 } 238 } 239