1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * HE handling 4 * 5 * Copyright(c) 2017 Intel Deutschland GmbH 6 * Copyright(c) 2019 - 2024 Intel Corporation 7 */ 8 9 #include "ieee80211_i.h" 10 #include "rate.h" 11 12 static void 13 ieee80211_update_from_he_6ghz_capa(const struct ieee80211_he_6ghz_capa *he_6ghz_capa, 14 struct link_sta_info *link_sta) 15 { 16 struct sta_info *sta = link_sta->sta; 17 enum ieee80211_smps_mode smps_mode; 18 19 if (sta->sdata->vif.type == NL80211_IFTYPE_AP || 20 sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { 21 switch (le16_get_bits(he_6ghz_capa->capa, 22 IEEE80211_HE_6GHZ_CAP_SM_PS)) { 23 case WLAN_HT_CAP_SM_PS_INVALID: 24 case WLAN_HT_CAP_SM_PS_STATIC: 25 smps_mode = IEEE80211_SMPS_STATIC; 26 break; 27 case WLAN_HT_CAP_SM_PS_DYNAMIC: 28 smps_mode = IEEE80211_SMPS_DYNAMIC; 29 break; 30 case WLAN_HT_CAP_SM_PS_DISABLED: 31 smps_mode = IEEE80211_SMPS_OFF; 32 break; 33 } 34 35 link_sta->pub->smps_mode = smps_mode; 36 } else { 37 link_sta->pub->smps_mode = IEEE80211_SMPS_OFF; 38 } 39 40 switch (le16_get_bits(he_6ghz_capa->capa, 41 IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN)) { 42 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454: 43 link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_11454; 44 break; 45 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991: 46 link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_7991; 47 break; 48 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895: 49 default: 50 link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_3895; 51 break; 52 } 53 54 ieee80211_sta_recalc_aggregates(&sta->sta); 55 56 link_sta->pub->he_6ghz_capa = *he_6ghz_capa; 57 } 58 59 static void ieee80211_he_mcs_disable(__le16 *he_mcs) 60 { 61 u32 i; 62 63 for (i = 0; i < 8; i++) 64 *he_mcs |= cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2); 65 } 66 67 static void ieee80211_he_mcs_intersection(__le16 *he_own_rx, __le16 *he_peer_rx, 68 __le16 *he_own_tx, __le16 *he_peer_tx) 69 { 70 u32 i; 71 u16 own_rx, own_tx, peer_rx, peer_tx; 72 73 for (i = 0; i < 8; i++) { 74 own_rx = le16_to_cpu(*he_own_rx); 75 own_rx = (own_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; 76 77 own_tx = le16_to_cpu(*he_own_tx); 78 own_tx = (own_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; 79 80 peer_rx = le16_to_cpu(*he_peer_rx); 81 peer_rx = (peer_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; 82 83 peer_tx = le16_to_cpu(*he_peer_tx); 84 peer_tx = (peer_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; 85 86 if (peer_tx != IEEE80211_HE_MCS_NOT_SUPPORTED) { 87 if (own_rx == IEEE80211_HE_MCS_NOT_SUPPORTED) 88 peer_tx = IEEE80211_HE_MCS_NOT_SUPPORTED; 89 else if (own_rx < peer_tx) 90 peer_tx = own_rx; 91 } 92 93 if (peer_rx != IEEE80211_HE_MCS_NOT_SUPPORTED) { 94 if (own_tx == IEEE80211_HE_MCS_NOT_SUPPORTED) 95 peer_rx = IEEE80211_HE_MCS_NOT_SUPPORTED; 96 else if (own_tx < peer_rx) 97 peer_rx = own_tx; 98 } 99 100 *he_peer_rx &= 101 ~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2); 102 *he_peer_rx |= cpu_to_le16(peer_rx << i * 2); 103 104 *he_peer_tx &= 105 ~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2); 106 *he_peer_tx |= cpu_to_le16(peer_tx << i * 2); 107 } 108 } 109 110 void 111 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 112 struct ieee80211_supported_band *sband, 113 const u8 *he_cap_ie, u8 he_cap_len, 114 const struct ieee80211_he_6ghz_capa *he_6ghz_capa, 115 struct link_sta_info *link_sta) 116 { 117 struct ieee80211_sta_he_cap *he_cap = &link_sta->pub->he_cap; 118 const struct ieee80211_sta_he_cap *own_he_cap_ptr; 119 struct ieee80211_sta_he_cap own_he_cap; 120 struct ieee80211_he_cap_elem *he_cap_ie_elem = (void *)he_cap_ie; 121 u8 he_ppe_size; 122 u8 mcs_nss_size; 123 u8 he_total_size; 124 bool own_160, peer_160, own_80p80, peer_80p80; 125 126 memset(he_cap, 0, sizeof(*he_cap)); 127 128 if (!he_cap_ie) 129 return; 130 131 own_he_cap_ptr = 132 ieee80211_get_he_iftype_cap_vif(sband, &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; 234 235 he_obss_pd->sr_ctrl = he_spr_ie_elem->he_sr_control; 236 data = he_spr_ie_elem->optional; 237 238 if (he_spr_ie_elem->he_sr_control & 239 IEEE80211_HE_SPR_NON_SRG_OFFSET_PRESENT) 240 he_obss_pd->non_srg_max_offset = *data++; 241 242 if (he_spr_ie_elem->he_sr_control & 243 IEEE80211_HE_SPR_SRG_INFORMATION_PRESENT) { 244 he_obss_pd->min_offset = *data++; 245 he_obss_pd->max_offset = *data++; 246 memcpy(he_obss_pd->bss_color_bitmap, data, 8); 247 data += 8; 248 memcpy(he_obss_pd->partial_bssid_bitmap, data, 8); 249 he_obss_pd->enable = true; 250 } 251 } 252 253 static void ieee80211_link_sta_rc_update_omi(struct ieee80211_link_data *link, 254 struct link_sta_info *link_sta) 255 { 256 struct ieee80211_sub_if_data *sdata = link->sdata; 257 struct ieee80211_supported_band *sband; 258 enum ieee80211_sta_rx_bandwidth new_bw; 259 enum nl80211_band band; 260 261 band = link->conf->chanreq.oper.chan->band; 262 sband = sdata->local->hw.wiphy->bands[band]; 263 264 new_bw = ieee80211_sta_cur_vht_bw(link_sta); 265 if (link_sta->pub->bandwidth == new_bw) 266 return; 267 268 link_sta->pub->bandwidth = new_bw; 269 rate_control_rate_update(sdata->local, sband, link_sta, 270 IEEE80211_RC_BW_CHANGED); 271 } 272 273 bool ieee80211_prepare_rx_omi_bw(struct ieee80211_link_sta *pub_link_sta, 274 enum ieee80211_sta_rx_bandwidth bw) 275 { 276 struct sta_info *sta = container_of(pub_link_sta->sta, 277 struct sta_info, sta); 278 struct ieee80211_local *local = sta->sdata->local; 279 struct link_sta_info *link_sta = 280 sdata_dereference(sta->link[pub_link_sta->link_id], sta->sdata); 281 struct ieee80211_link_data *link = 282 sdata_dereference(sta->sdata->link[pub_link_sta->link_id], 283 sta->sdata); 284 struct ieee80211_chanctx_conf *conf; 285 struct ieee80211_chanctx *chanctx; 286 bool ret; 287 288 if (WARN_ON(!link || !link_sta || link_sta->pub != pub_link_sta)) 289 return false; 290 291 conf = sdata_dereference(link->conf->chanctx_conf, sta->sdata); 292 if (WARN_ON(!conf)) 293 return false; 294 295 trace_api_prepare_rx_omi_bw(local, sta->sdata, link_sta, bw); 296 297 chanctx = container_of(conf, typeof(*chanctx), conf); 298 299 if (link_sta->rx_omi_bw_staging == bw) { 300 ret = false; 301 goto trace; 302 } 303 304 /* must call this API in pairs */ 305 if (WARN_ON(link_sta->rx_omi_bw_tx != link_sta->rx_omi_bw_staging || 306 link_sta->rx_omi_bw_rx != link_sta->rx_omi_bw_staging)) { 307 ret = false; 308 goto trace; 309 } 310 311 if (bw < link_sta->rx_omi_bw_staging) { 312 link_sta->rx_omi_bw_tx = bw; 313 ieee80211_link_sta_rc_update_omi(link, link_sta); 314 } else { 315 link_sta->rx_omi_bw_rx = bw; 316 ieee80211_recalc_chanctx_min_def(local, chanctx, NULL, false); 317 } 318 319 link_sta->rx_omi_bw_staging = bw; 320 ret = true; 321 trace: 322 trace_api_return_bool(local, ret); 323 return ret; 324 } 325 EXPORT_SYMBOL_GPL(ieee80211_prepare_rx_omi_bw); 326 327 void ieee80211_finalize_rx_omi_bw(struct ieee80211_link_sta *pub_link_sta) 328 { 329 struct sta_info *sta = container_of(pub_link_sta->sta, 330 struct sta_info, sta); 331 struct ieee80211_local *local = sta->sdata->local; 332 struct link_sta_info *link_sta = 333 sdata_dereference(sta->link[pub_link_sta->link_id], sta->sdata); 334 struct ieee80211_link_data *link = 335 sdata_dereference(sta->sdata->link[pub_link_sta->link_id], 336 sta->sdata); 337 struct ieee80211_chanctx_conf *conf; 338 struct ieee80211_chanctx *chanctx; 339 340 if (WARN_ON(!link || !link_sta || link_sta->pub != pub_link_sta)) 341 return; 342 343 conf = sdata_dereference(link->conf->chanctx_conf, sta->sdata); 344 if (WARN_ON(!conf)) 345 return; 346 347 trace_api_finalize_rx_omi_bw(local, sta->sdata, link_sta); 348 349 chanctx = container_of(conf, typeof(*chanctx), conf); 350 351 if (link_sta->rx_omi_bw_tx != link_sta->rx_omi_bw_staging) { 352 /* rate control in finalize only when widening bandwidth */ 353 WARN_ON(link_sta->rx_omi_bw_tx > link_sta->rx_omi_bw_staging); 354 link_sta->rx_omi_bw_tx = link_sta->rx_omi_bw_staging; 355 ieee80211_link_sta_rc_update_omi(link, link_sta); 356 } 357 358 if (link_sta->rx_omi_bw_rx != link_sta->rx_omi_bw_staging) { 359 /* channel context in finalize only when narrowing bandwidth */ 360 WARN_ON(link_sta->rx_omi_bw_rx < link_sta->rx_omi_bw_staging); 361 link_sta->rx_omi_bw_rx = link_sta->rx_omi_bw_staging; 362 ieee80211_recalc_chanctx_min_def(local, chanctx, NULL, false); 363 } 364 365 trace_api_return_void(local); 366 } 367 EXPORT_SYMBOL_GPL(ieee80211_finalize_rx_omi_bw); 368