1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2024-2025 Intel Corporation 4 */ 5 6 #include <net/mac80211.h> 7 #include <linux/ip.h> 8 9 #include "mld.h" 10 #include "mac80211.h" 11 #include "phy.h" 12 #include "iface.h" 13 #include "power.h" 14 #include "sta.h" 15 #include "agg.h" 16 #include "scan.h" 17 #include "d3.h" 18 #include "tlc.h" 19 #include "key.h" 20 #include "ap.h" 21 #include "tx.h" 22 #include "roc.h" 23 #include "mlo.h" 24 #include "stats.h" 25 #include "ftm-initiator.h" 26 #include "low_latency.h" 27 #include "fw/api/scan.h" 28 #include "fw/api/context.h" 29 #include "fw/api/filter.h" 30 #include "fw/api/sta.h" 31 #include "fw/api/tdls.h" 32 #ifdef CONFIG_PM_SLEEP 33 #include "fw/api/d3.h" 34 #endif /* CONFIG_PM_SLEEP */ 35 #include "iwl-trans.h" 36 37 #define IWL_MLD_LIMITS(ap) \ 38 { \ 39 .max = 2, \ 40 .types = BIT(NL80211_IFTYPE_STATION), \ 41 }, \ 42 { \ 43 .max = 1, \ 44 .types = ap | \ 45 BIT(NL80211_IFTYPE_P2P_CLIENT) | \ 46 BIT(NL80211_IFTYPE_P2P_GO), \ 47 }, \ 48 { \ 49 .max = 1, \ 50 .types = BIT(NL80211_IFTYPE_P2P_DEVICE), \ 51 } 52 53 static const struct ieee80211_iface_limit iwl_mld_limits[] = { 54 IWL_MLD_LIMITS(0) 55 }; 56 57 static const struct ieee80211_iface_limit iwl_mld_limits_ap[] = { 58 IWL_MLD_LIMITS(BIT(NL80211_IFTYPE_AP)) 59 }; 60 61 static const struct ieee80211_iface_combination 62 iwl_mld_iface_combinations[] = { 63 { 64 .num_different_channels = 2, 65 .max_interfaces = 4, 66 .limits = iwl_mld_limits, 67 .n_limits = ARRAY_SIZE(iwl_mld_limits), 68 }, 69 { 70 .num_different_channels = 1, 71 .max_interfaces = 4, 72 .limits = iwl_mld_limits_ap, 73 .n_limits = ARRAY_SIZE(iwl_mld_limits_ap), 74 }, 75 }; 76 77 static const u8 if_types_ext_capa_sta[] = { 78 [0] = WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING, 79 [2] = WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT, 80 [7] = WLAN_EXT_CAPA8_OPMODE_NOTIF | 81 WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB, 82 [8] = WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB, 83 [9] = WLAN_EXT_CAPA10_TWT_REQUESTER_SUPPORT, 84 }; 85 86 #define IWL_MLD_EMLSR_CAPA (IEEE80211_EML_CAP_EMLSR_SUPP | \ 87 IEEE80211_EML_CAP_EMLSR_PADDING_DELAY_32US << \ 88 __bf_shf(IEEE80211_EML_CAP_EMLSR_PADDING_DELAY) | \ 89 IEEE80211_EML_CAP_EMLSR_TRANSITION_DELAY_64US << \ 90 __bf_shf(IEEE80211_EML_CAP_EMLSR_TRANSITION_DELAY)) 91 #define IWL_MLD_CAPA_OPS (FIELD_PREP_CONST( \ 92 IEEE80211_MLD_CAP_OP_TID_TO_LINK_MAP_NEG_SUPP, \ 93 IEEE80211_MLD_CAP_OP_TID_TO_LINK_MAP_NEG_SUPP_SAME) | \ 94 IEEE80211_MLD_CAP_OP_LINK_RECONF_SUPPORT) 95 96 static const struct wiphy_iftype_ext_capab iftypes_ext_capa[] = { 97 { 98 .iftype = NL80211_IFTYPE_STATION, 99 .extended_capabilities = if_types_ext_capa_sta, 100 .extended_capabilities_mask = if_types_ext_capa_sta, 101 .extended_capabilities_len = sizeof(if_types_ext_capa_sta), 102 /* relevant only if EHT is supported */ 103 .eml_capabilities = IWL_MLD_EMLSR_CAPA, 104 .mld_capa_and_ops = IWL_MLD_CAPA_OPS, 105 }, 106 }; 107 108 static void iwl_mld_hw_set_addresses(struct iwl_mld *mld) 109 { 110 struct wiphy *wiphy = mld->wiphy; 111 int num_addrs = 1; 112 113 /* Extract MAC address */ 114 memcpy(mld->addresses[0].addr, mld->nvm_data->hw_addr, ETH_ALEN); 115 wiphy->addresses = mld->addresses; 116 wiphy->n_addresses = 1; 117 118 /* Extract additional MAC addresses if available */ 119 if (mld->nvm_data->n_hw_addrs > 1) 120 num_addrs = min(mld->nvm_data->n_hw_addrs, 121 IWL_MLD_MAX_ADDRESSES); 122 123 for (int i = 1; i < num_addrs; i++) { 124 memcpy(mld->addresses[i].addr, 125 mld->addresses[i - 1].addr, 126 ETH_ALEN); 127 mld->addresses[i].addr[ETH_ALEN - 1]++; 128 wiphy->n_addresses++; 129 } 130 } 131 132 static void iwl_mld_hw_set_channels(struct iwl_mld *mld) 133 { 134 struct wiphy *wiphy = mld->wiphy; 135 struct ieee80211_supported_band *bands = mld->nvm_data->bands; 136 137 wiphy->bands[NL80211_BAND_2GHZ] = &bands[NL80211_BAND_2GHZ]; 138 wiphy->bands[NL80211_BAND_5GHZ] = &bands[NL80211_BAND_5GHZ]; 139 140 if (bands[NL80211_BAND_6GHZ].n_channels) 141 wiphy->bands[NL80211_BAND_6GHZ] = &bands[NL80211_BAND_6GHZ]; 142 } 143 144 static void iwl_mld_hw_set_security(struct iwl_mld *mld) 145 { 146 struct ieee80211_hw *hw = mld->hw; 147 static const u32 mld_ciphers[] = { 148 WLAN_CIPHER_SUITE_WEP40, 149 WLAN_CIPHER_SUITE_WEP104, 150 WLAN_CIPHER_SUITE_TKIP, 151 WLAN_CIPHER_SUITE_CCMP, 152 WLAN_CIPHER_SUITE_GCMP, 153 WLAN_CIPHER_SUITE_GCMP_256, 154 WLAN_CIPHER_SUITE_AES_CMAC, 155 WLAN_CIPHER_SUITE_BIP_GMAC_128, 156 WLAN_CIPHER_SUITE_BIP_GMAC_256 157 }; 158 159 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mld_ciphers); 160 hw->wiphy->cipher_suites = mld_ciphers; 161 162 ieee80211_hw_set(hw, MFP_CAPABLE); 163 wiphy_ext_feature_set(hw->wiphy, 164 NL80211_EXT_FEATURE_BEACON_PROTECTION); 165 } 166 167 static void iwl_mld_hw_set_antennas(struct iwl_mld *mld) 168 { 169 struct wiphy *wiphy = mld->wiphy; 170 171 wiphy->available_antennas_tx = iwl_mld_get_valid_tx_ant(mld); 172 wiphy->available_antennas_rx = iwl_mld_get_valid_rx_ant(mld); 173 } 174 175 static void iwl_mld_hw_set_pm(struct iwl_mld *mld) 176 { 177 #ifdef CONFIG_PM_SLEEP 178 struct wiphy *wiphy = mld->wiphy; 179 180 if (!device_can_wakeup(mld->trans->dev)) 181 return; 182 183 mld->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT | 184 WIPHY_WOWLAN_DISCONNECT | 185 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 186 WIPHY_WOWLAN_RFKILL_RELEASE | 187 WIPHY_WOWLAN_NET_DETECT | 188 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 189 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 190 WIPHY_WOWLAN_4WAY_HANDSHAKE; 191 192 mld->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS; 193 mld->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN; 194 mld->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN; 195 mld->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES_V2; 196 197 wiphy->wowlan = &mld->wowlan; 198 #endif /* CONFIG_PM_SLEEP */ 199 } 200 201 static void iwl_mac_hw_set_radiotap(struct iwl_mld *mld) 202 { 203 struct ieee80211_hw *hw = mld->hw; 204 205 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC | 206 IEEE80211_RADIOTAP_MCS_HAVE_STBC; 207 208 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC | 209 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED; 210 211 hw->radiotap_timestamp.units_pos = 212 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US | 213 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ; 214 215 /* this is the case for CCK frames, it's better (only 8) for OFDM */ 216 hw->radiotap_timestamp.accuracy = 22; 217 } 218 219 static void iwl_mac_hw_set_flags(struct iwl_mld *mld) 220 { 221 struct ieee80211_hw *hw = mld->hw; 222 223 ieee80211_hw_set(hw, USES_RSS); 224 ieee80211_hw_set(hw, HANDLES_QUIET_CSA); 225 ieee80211_hw_set(hw, AP_LINK_PS); 226 ieee80211_hw_set(hw, SIGNAL_DBM); 227 ieee80211_hw_set(hw, SPECTRUM_MGMT); 228 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 229 ieee80211_hw_set(hw, WANT_MONITOR_VIF); 230 ieee80211_hw_set(hw, SUPPORTS_PS); 231 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 232 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 233 ieee80211_hw_set(hw, CONNECTION_MONITOR); 234 ieee80211_hw_set(hw, CHANCTX_STA_CSA); 235 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); 236 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS); 237 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR); 238 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW); 239 ieee80211_hw_set(hw, BUFF_MMPDU_TXQ); 240 ieee80211_hw_set(hw, STA_MMPDU_TXQ); 241 ieee80211_hw_set(hw, TX_AMSDU); 242 ieee80211_hw_set(hw, TX_FRAG_LIST); 243 ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW); 244 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 245 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER); 246 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS); 247 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU); 248 ieee80211_hw_set(hw, TDLS_WIDER_BW); 249 } 250 251 static void iwl_mac_hw_set_wiphy(struct iwl_mld *mld) 252 { 253 struct ieee80211_hw *hw = mld->hw; 254 struct wiphy *wiphy = hw->wiphy; 255 const struct iwl_ucode_capabilities *ucode_capa = &mld->fw->ucode_capa; 256 257 snprintf(wiphy->fw_version, 258 sizeof(wiphy->fw_version), 259 "%.31s", mld->fw->fw_version); 260 261 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 262 BIT(NL80211_IFTYPE_P2P_CLIENT) | 263 BIT(NL80211_IFTYPE_AP) | 264 BIT(NL80211_IFTYPE_P2P_GO) | 265 BIT(NL80211_IFTYPE_P2P_DEVICE) | 266 BIT(NL80211_IFTYPE_ADHOC); 267 268 wiphy->features |= NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR | 269 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR | 270 NL80211_FEATURE_ND_RANDOM_MAC_ADDR | 271 NL80211_FEATURE_HT_IBSS | 272 NL80211_FEATURE_P2P_GO_CTWIN | 273 NL80211_FEATURE_LOW_PRIORITY_SCAN | 274 NL80211_FEATURE_P2P_GO_OPPPS | 275 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | 276 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION | 277 NL80211_FEATURE_TX_POWER_INSERTION | 278 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES; 279 280 wiphy->flags |= WIPHY_FLAG_IBSS_RSN | 281 WIPHY_FLAG_AP_UAPSD | 282 WIPHY_FLAG_HAS_CHANNEL_SWITCH | 283 WIPHY_FLAG_SPLIT_SCAN_6GHZ | 284 WIPHY_FLAG_SUPPORTS_TDLS | 285 WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK; 286 287 if (mld->nvm_data->sku_cap_11be_enable && 288 !iwlwifi_mod_params.disable_11ax && 289 !iwlwifi_mod_params.disable_11be) 290 wiphy->flags |= WIPHY_FLAG_SUPPORTS_MLO; 291 292 /* the firmware uses u8 for num of iterations, but 0xff is saved for 293 * infinite loop, so the maximum number of iterations is actually 254. 294 */ 295 wiphy->max_sched_scan_plan_iterations = 254; 296 wiphy->max_sched_scan_ie_len = iwl_mld_scan_max_template_size(); 297 wiphy->max_scan_ie_len = iwl_mld_scan_max_template_size(); 298 wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX; 299 wiphy->max_scan_ssids = PROBE_OPTION_MAX; 300 wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS; 301 wiphy->max_sched_scan_reqs = 1; 302 wiphy->max_sched_scan_plan_interval = U16_MAX; 303 wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES_V2; 304 305 wiphy->max_remain_on_channel_duration = 10000; 306 307 wiphy->hw_version = mld->trans->info.hw_id; 308 309 wiphy->hw_timestamp_max_peers = 1; 310 311 wiphy->iface_combinations = iwl_mld_iface_combinations; 312 wiphy->n_iface_combinations = ARRAY_SIZE(iwl_mld_iface_combinations); 313 314 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_VHT_IBSS); 315 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_DFS_CONCURRENT); 316 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_LEGACY); 317 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_SCAN_START_TIME); 318 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BSS_PARENT_TSF); 319 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT); 320 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP); 321 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME); 322 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE); 323 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER); 324 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_SPP_AMSDU_SUPPORT); 325 326 if (fw_has_capa(ucode_capa, IWL_UCODE_TLV_CAPA_PROTECTED_TWT)) 327 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_PROTECTED_TWT); 328 329 wiphy->iftype_ext_capab = NULL; 330 wiphy->num_iftype_ext_capab = 0; 331 332 if (!iwlwifi_mod_params.disable_11ax) { 333 wiphy->iftype_ext_capab = iftypes_ext_capa; 334 wiphy->num_iftype_ext_capab = ARRAY_SIZE(iftypes_ext_capa); 335 336 ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID); 337 ieee80211_hw_set(hw, SUPPORTS_ONLY_HE_MULTI_BSSID); 338 } 339 340 if (iwlmld_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 341 wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; 342 else 343 wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; 344 } 345 346 static void iwl_mac_hw_set_misc(struct iwl_mld *mld) 347 { 348 struct ieee80211_hw *hw = mld->hw; 349 350 hw->queues = IEEE80211_NUM_ACS; 351 352 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG; 353 hw->netdev_features |= mld->trans->mac_cfg->base->features; 354 355 hw->max_tx_fragments = mld->trans->info.max_skb_frags; 356 hw->max_listen_interval = IWL_MLD_CONN_LISTEN_INTERVAL; 357 358 hw->uapsd_max_sp_len = IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL; 359 hw->uapsd_queues = IEEE80211_WMM_IE_STA_QOSINFO_AC_VO | 360 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI | 361 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK | 362 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE; 363 364 hw->chanctx_data_size = sizeof(struct iwl_mld_phy); 365 hw->vif_data_size = sizeof(struct iwl_mld_vif); 366 hw->sta_data_size = sizeof(struct iwl_mld_sta); 367 hw->txq_data_size = sizeof(struct iwl_mld_txq); 368 369 /* TODO: Remove this division when IEEE80211_MAX_AMPDU_BUF_EHT size 370 * is supported. 371 * Note: ensure that IWL_DEFAULT_QUEUE_SIZE_EHT is updated accordingly. 372 */ 373 hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_EHT / 2; 374 } 375 376 static int iwl_mld_hw_verify_preconditions(struct iwl_mld *mld) 377 { 378 int ratecheck; 379 380 /* check for rates version 3 */ 381 ratecheck = 382 (iwl_fw_lookup_cmd_ver(mld->fw, TX_CMD, 0) >= 11) + 383 (iwl_fw_lookup_notif_ver(mld->fw, DATA_PATH_GROUP, 384 TLC_MNG_UPDATE_NOTIF, 0) >= 4) + 385 (iwl_fw_lookup_notif_ver(mld->fw, LEGACY_GROUP, 386 REPLY_RX_MPDU_CMD, 0) >= 6) + 387 (iwl_fw_lookup_notif_ver(mld->fw, DATA_PATH_GROUP, 388 RX_NO_DATA_NOTIF, 0) >= 4) + 389 (iwl_fw_lookup_notif_ver(mld->fw, LONG_GROUP, TX_CMD, 0) >= 9); 390 391 if (ratecheck != 0 && ratecheck != 5) { 392 IWL_ERR(mld, "Firmware has inconsistent rates\n"); 393 return -EINVAL; 394 } 395 396 /* 11ax is expected to be enabled for all supported devices */ 397 if (WARN_ON(!mld->nvm_data->sku_cap_11ax_enable)) 398 return -EINVAL; 399 400 /* LAR is expected to be enabled for all supported devices */ 401 if (WARN_ON(!mld->nvm_data->lar_enabled)) 402 return -EINVAL; 403 404 /* All supported devices are currently using version 3 of the cmd. 405 * Since version 3, IWL_SCAN_MAX_PROFILES_V2 shall be used where 406 * necessary. 407 */ 408 if (WARN_ON(iwl_fw_lookup_cmd_ver(mld->fw, 409 SCAN_OFFLOAD_UPDATE_PROFILES_CMD, 410 IWL_FW_CMD_VER_UNKNOWN) != 3)) 411 return -EINVAL; 412 413 return 0; 414 } 415 416 int iwl_mld_register_hw(struct iwl_mld *mld) 417 { 418 /* verify once essential preconditions required for setting 419 * the hw capabilities 420 */ 421 if (iwl_mld_hw_verify_preconditions(mld)) 422 return -EINVAL; 423 424 iwl_mld_hw_set_addresses(mld); 425 iwl_mld_hw_set_channels(mld); 426 iwl_mld_hw_set_security(mld); 427 iwl_mld_hw_set_pm(mld); 428 iwl_mld_hw_set_antennas(mld); 429 iwl_mac_hw_set_radiotap(mld); 430 iwl_mac_hw_set_flags(mld); 431 iwl_mac_hw_set_wiphy(mld); 432 iwl_mac_hw_set_misc(mld); 433 434 SET_IEEE80211_DEV(mld->hw, mld->trans->dev); 435 436 return ieee80211_register_hw(mld->hw); 437 } 438 439 static void 440 iwl_mld_mac80211_tx(struct ieee80211_hw *hw, 441 struct ieee80211_tx_control *control, struct sk_buff *skb) 442 { 443 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 444 struct ieee80211_sta *sta = control->sta; 445 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 446 struct ieee80211_hdr *hdr = (void *)skb->data; 447 u32 link_id = u32_get_bits(info->control.flags, 448 IEEE80211_TX_CTRL_MLO_LINK); 449 450 /* In AP mode, mgmt frames are sent on the bcast station, 451 * so the FW can't translate the MLD addr to the link addr. Do it here 452 */ 453 if (ieee80211_is_mgmt(hdr->frame_control) && sta && 454 link_id != IEEE80211_LINK_UNSPECIFIED && 455 !ieee80211_is_probe_resp(hdr->frame_control)) { 456 /* translate MLD addresses to LINK addresses */ 457 struct ieee80211_link_sta *link_sta = 458 rcu_dereference(sta->link[link_id]); 459 struct ieee80211_bss_conf *link_conf = 460 rcu_dereference(info->control.vif->link_conf[link_id]); 461 struct ieee80211_mgmt *mgmt; 462 463 if (WARN_ON(!link_sta || !link_conf)) { 464 ieee80211_free_txskb(hw, skb); 465 return; 466 } 467 468 mgmt = (void *)hdr; 469 memcpy(mgmt->da, link_sta->addr, ETH_ALEN); 470 memcpy(mgmt->sa, link_conf->addr, ETH_ALEN); 471 memcpy(mgmt->bssid, link_conf->bssid, ETH_ALEN); 472 } 473 474 iwl_mld_tx_skb(mld, skb, NULL); 475 } 476 477 static void 478 iwl_mld_restart_cleanup(struct iwl_mld *mld) 479 { 480 iwl_cleanup_mld(mld); 481 482 ieee80211_iterate_interfaces(mld->hw, IEEE80211_IFACE_ITER_ACTIVE, 483 iwl_mld_cleanup_vif, NULL); 484 485 ieee80211_iterate_stations_atomic(mld->hw, 486 iwl_mld_cleanup_sta, NULL); 487 488 iwl_mld_ftm_restart_cleanup(mld); 489 } 490 491 static 492 int iwl_mld_mac80211_start(struct ieee80211_hw *hw) 493 { 494 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 495 bool in_d3 = false; 496 int ret = 0; 497 498 lockdep_assert_wiphy(mld->wiphy); 499 500 #ifdef CONFIG_PM_SLEEP 501 /* Unless the host goes into hibernate the FW always stays on and 502 * the d3_resume flow is used. When wowlan is configured, mac80211 503 * would call it's resume callback and the wowlan_resume flow 504 * would be used. 505 */ 506 507 in_d3 = mld->fw_status.in_d3; 508 if (in_d3) { 509 /* mac80211 already cleaned up the state, no need for cleanup */ 510 ret = iwl_mld_no_wowlan_resume(mld); 511 if (ret) 512 iwl_mld_stop_fw(mld); 513 } 514 #endif /* CONFIG_PM_SLEEP */ 515 516 if (mld->fw_status.in_hw_restart) { 517 iwl_mld_stop_fw(mld); 518 iwl_mld_restart_cleanup(mld); 519 } 520 521 if (!in_d3 || ret) { 522 ret = iwl_mld_start_fw(mld); 523 if (ret) 524 goto error; 525 } 526 527 mld->scan.last_start_time_jiffies = jiffies; 528 529 iwl_dbg_tlv_time_point(&mld->fwrt, IWL_FW_INI_TIME_POINT_POST_INIT, 530 NULL); 531 iwl_dbg_tlv_time_point(&mld->fwrt, IWL_FW_INI_TIME_POINT_PERIODIC, 532 NULL); 533 534 return 0; 535 536 error: 537 /* If we failed to restart the hw, there is nothing useful 538 * we can do but indicate we are no longer in restart. 539 */ 540 mld->fw_status.in_hw_restart = false; 541 542 return ret; 543 } 544 545 static 546 void iwl_mld_mac80211_stop(struct ieee80211_hw *hw, bool suspend) 547 { 548 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 549 550 lockdep_assert_wiphy(mld->wiphy); 551 552 wiphy_work_cancel(mld->wiphy, &mld->add_txqs_wk); 553 554 /* if the suspend flow fails the fw is in error. Stop it here, and it 555 * will be started upon wakeup 556 */ 557 if (!suspend || 558 (IS_ENABLED(CONFIG_PM_SLEEP) && iwl_mld_no_wowlan_suspend(mld))) 559 iwl_mld_stop_fw(mld); 560 561 /* Clear in_hw_restart flag when stopping the hw, as mac80211 won't 562 * execute the restart. 563 */ 564 mld->fw_status.in_hw_restart = false; 565 566 /* We shouldn't have any UIDs still set. Loop over all the UIDs to 567 * make sure there's nothing left there and warn if any is found. 568 */ 569 for (int i = 0; i < ARRAY_SIZE(mld->scan.uid_status); i++) 570 if (WARN_ONCE(mld->scan.uid_status[i], 571 "UMAC scan UID %d status was not cleaned (0x%x 0x%x)\n", 572 i, mld->scan.uid_status[i], mld->scan.status)) 573 mld->scan.uid_status[i] = 0; 574 } 575 576 static 577 int iwl_mld_mac80211_config(struct ieee80211_hw *hw, u32 changed) 578 { 579 return 0; 580 } 581 582 static 583 int iwl_mld_mac80211_add_interface(struct ieee80211_hw *hw, 584 struct ieee80211_vif *vif) 585 { 586 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 587 int ret; 588 589 lockdep_assert_wiphy(mld->wiphy); 590 591 /* Construct mld_vif, add it to fw, and map its ID to ieee80211_vif */ 592 ret = iwl_mld_add_vif(mld, vif); 593 if (ret) 594 return ret; 595 596 /* 597 * Add the default link, but not if this is an MLD vif as that implies 598 * the HW is restarting and it will be configured by change_vif_links. 599 */ 600 if (!ieee80211_vif_is_mld(vif)) 601 ret = iwl_mld_add_link(mld, &vif->bss_conf); 602 if (ret) 603 goto err; 604 605 if (vif->type == NL80211_IFTYPE_STATION) { 606 vif->driver_flags |= IEEE80211_VIF_REMOVE_AP_AFTER_DISASSOC; 607 if (!vif->p2p) 608 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 609 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 610 } 611 612 if (vif->p2p || iwl_fw_lookup_cmd_ver(mld->fw, PHY_CONTEXT_CMD, 0) < 5) 613 vif->driver_flags |= IEEE80211_VIF_IGNORE_OFDMA_WIDER_BW; 614 615 /* 616 * For an MLD vif (in restart) we may not have a link; delay the call 617 * the initial change_vif_links. 618 */ 619 if (vif->type == NL80211_IFTYPE_STATION && 620 !ieee80211_vif_is_mld(vif)) 621 iwl_mld_update_mac_power(mld, vif, false); 622 623 if (vif->type == NL80211_IFTYPE_MONITOR) { 624 mld->monitor.on = true; 625 ieee80211_hw_set(mld->hw, RX_INCLUDES_FCS); 626 } 627 628 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 629 mld->p2p_device_vif = vif; 630 631 return 0; 632 633 err: 634 iwl_mld_rm_vif(mld, vif); 635 return ret; 636 } 637 638 static 639 void iwl_mld_mac80211_remove_interface(struct ieee80211_hw *hw, 640 struct ieee80211_vif *vif) 641 { 642 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 643 644 lockdep_assert_wiphy(mld->wiphy); 645 646 if (ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_STATION) 647 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 648 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 649 650 if (vif->type == NL80211_IFTYPE_MONITOR) { 651 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mld->hw->flags); 652 mld->monitor.on = false; 653 } 654 655 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 656 mld->p2p_device_vif = NULL; 657 658 iwl_mld_remove_link(mld, &vif->bss_conf); 659 660 #ifdef CONFIG_IWLWIFI_DEBUGFS 661 debugfs_remove(iwl_mld_vif_from_mac80211(vif)->dbgfs_slink); 662 iwl_mld_vif_from_mac80211(vif)->dbgfs_slink = NULL; 663 #endif 664 665 iwl_mld_rm_vif(mld, vif); 666 } 667 668 struct iwl_mld_mc_iter_data { 669 struct iwl_mld *mld; 670 int port_id; 671 }; 672 673 static void iwl_mld_mc_iface_iterator(void *data, u8 *mac, 674 struct ieee80211_vif *vif) 675 { 676 struct iwl_mld_mc_iter_data *mc_data = data; 677 struct iwl_mld *mld = mc_data->mld; 678 struct iwl_mcast_filter_cmd *cmd = mld->mcast_filter_cmd; 679 struct iwl_host_cmd hcmd = { 680 .id = MCAST_FILTER_CMD, 681 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 682 }; 683 int ret, len; 684 685 /* If we don't have free ports, mcast frames will be dropped */ 686 if (WARN_ON_ONCE(mc_data->port_id >= MAX_PORT_ID_NUM)) 687 return; 688 689 if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc) 690 return; 691 692 cmd->port_id = mc_data->port_id++; 693 ether_addr_copy(cmd->bssid, vif->bss_conf.bssid); 694 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4); 695 696 hcmd.len[0] = len; 697 hcmd.data[0] = cmd; 698 699 ret = iwl_mld_send_cmd(mld, &hcmd); 700 if (ret) 701 IWL_ERR(mld, "mcast filter cmd error. ret=%d\n", ret); 702 } 703 704 void iwl_mld_recalc_multicast_filter(struct iwl_mld *mld) 705 { 706 struct iwl_mld_mc_iter_data iter_data = { 707 .mld = mld, 708 }; 709 710 if (WARN_ON_ONCE(!mld->mcast_filter_cmd)) 711 return; 712 713 ieee80211_iterate_active_interfaces(mld->hw, 714 IEEE80211_IFACE_ITER_NORMAL, 715 iwl_mld_mc_iface_iterator, 716 &iter_data); 717 } 718 719 static u64 720 iwl_mld_mac80211_prepare_multicast(struct ieee80211_hw *hw, 721 struct netdev_hw_addr_list *mc_list) 722 { 723 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 724 struct iwl_mcast_filter_cmd *cmd; 725 struct netdev_hw_addr *addr; 726 int addr_count = netdev_hw_addr_list_count(mc_list); 727 bool pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES; 728 int len; 729 730 if (pass_all) 731 addr_count = 0; 732 733 /* len must be a multiple of 4 */ 734 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4); 735 cmd = kzalloc(len, GFP_ATOMIC); 736 if (!cmd) 737 return 0; 738 739 if (pass_all) { 740 cmd->pass_all = 1; 741 goto out; 742 } 743 744 netdev_hw_addr_list_for_each(addr, mc_list) { 745 IWL_DEBUG_MAC80211(mld, "mcast addr (%d): %pM\n", 746 cmd->count, addr->addr); 747 ether_addr_copy(&cmd->addr_list[cmd->count * ETH_ALEN], 748 addr->addr); 749 cmd->count++; 750 } 751 752 out: 753 return (u64)(unsigned long)cmd; 754 } 755 756 static 757 void iwl_mld_mac80211_configure_filter(struct ieee80211_hw *hw, 758 unsigned int changed_flags, 759 unsigned int *total_flags, 760 u64 multicast) 761 { 762 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 763 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast; 764 765 /* Replace previous configuration */ 766 kfree(mld->mcast_filter_cmd); 767 mld->mcast_filter_cmd = cmd; 768 769 if (!cmd) 770 goto out; 771 772 if (changed_flags & FIF_ALLMULTI) 773 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI); 774 775 if (cmd->pass_all) 776 cmd->count = 0; 777 778 iwl_mld_recalc_multicast_filter(mld); 779 out: 780 *total_flags = 0; 781 } 782 783 static 784 void iwl_mld_mac80211_wake_tx_queue(struct ieee80211_hw *hw, 785 struct ieee80211_txq *txq) 786 { 787 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 788 struct iwl_mld_txq *mld_txq = iwl_mld_txq_from_mac80211(txq); 789 790 if (likely(mld_txq->status.allocated) || !txq->sta) { 791 iwl_mld_tx_from_txq(mld, txq); 792 return; 793 } 794 795 /* We don't support TSPEC tids. %IEEE80211_NUM_TIDS is for mgmt */ 796 if (txq->tid != IEEE80211_NUM_TIDS && txq->tid >= IWL_MAX_TID_COUNT) { 797 IWL_DEBUG_MAC80211(mld, "TID %d is not supported\n", txq->tid); 798 return; 799 } 800 801 /* The worker will handle any packets we leave on the txq now */ 802 803 spin_lock_bh(&mld->add_txqs_lock); 804 /* The list is being deleted only after the queue is fully allocated. */ 805 if (list_empty(&mld_txq->list) && 806 /* recheck under lock, otherwise it can be added twice */ 807 !mld_txq->status.allocated) { 808 list_add_tail(&mld_txq->list, &mld->txqs_to_add); 809 wiphy_work_queue(mld->wiphy, &mld->add_txqs_wk); 810 } 811 spin_unlock_bh(&mld->add_txqs_lock); 812 } 813 814 static void iwl_mld_teardown_tdls_peers(struct iwl_mld *mld) 815 { 816 lockdep_assert_wiphy(mld->wiphy); 817 818 for (int i = 0; i < mld->fw->ucode_capa.num_stations; i++) { 819 struct ieee80211_link_sta *link_sta; 820 struct iwl_mld_sta *mld_sta; 821 822 link_sta = wiphy_dereference(mld->wiphy, 823 mld->fw_id_to_link_sta[i]); 824 if (IS_ERR_OR_NULL(link_sta)) 825 continue; 826 827 if (!link_sta->sta->tdls) 828 continue; 829 830 mld_sta = iwl_mld_sta_from_mac80211(link_sta->sta); 831 832 ieee80211_tdls_oper_request(mld_sta->vif, link_sta->addr, 833 NL80211_TDLS_TEARDOWN, 834 WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED, 835 GFP_KERNEL); 836 } 837 } 838 839 static 840 int iwl_mld_add_chanctx(struct ieee80211_hw *hw, 841 struct ieee80211_chanctx_conf *ctx) 842 { 843 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 844 struct iwl_mld_phy *phy = iwl_mld_phy_from_mac80211(ctx); 845 int fw_id = iwl_mld_allocate_fw_phy_id(mld); 846 int ret; 847 848 if (fw_id < 0) 849 return fw_id; 850 851 phy->mld = mld; 852 phy->fw_id = fw_id; 853 phy->chandef = *iwl_mld_get_chandef_from_chanctx(mld, ctx); 854 855 ret = iwl_mld_phy_fw_action(mld, ctx, FW_CTXT_ACTION_ADD); 856 if (ret) { 857 mld->used_phy_ids &= ~BIT(phy->fw_id); 858 return ret; 859 } 860 861 if (hweight8(mld->used_phy_ids) > 1) 862 iwl_mld_teardown_tdls_peers(mld); 863 864 return 0; 865 } 866 867 static 868 void iwl_mld_remove_chanctx(struct ieee80211_hw *hw, 869 struct ieee80211_chanctx_conf *ctx) 870 { 871 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 872 struct iwl_mld_phy *phy = iwl_mld_phy_from_mac80211(ctx); 873 874 iwl_mld_phy_fw_action(mld, ctx, FW_CTXT_ACTION_REMOVE); 875 mld->used_phy_ids &= ~BIT(phy->fw_id); 876 } 877 878 static 879 void iwl_mld_change_chanctx(struct ieee80211_hw *hw, 880 struct ieee80211_chanctx_conf *ctx, u32 changed) 881 { 882 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 883 struct iwl_mld_phy *phy = iwl_mld_phy_from_mac80211(ctx); 884 struct cfg80211_chan_def *chandef = 885 iwl_mld_get_chandef_from_chanctx(mld, ctx); 886 887 /* We don't care about these */ 888 if (!(changed & ~(IEEE80211_CHANCTX_CHANGE_RX_CHAINS | 889 IEEE80211_CHANCTX_CHANGE_RADAR | 890 IEEE80211_CHANCTX_CHANGE_CHANNEL))) 891 return; 892 893 /* Check if a FW update is required */ 894 895 if (changed & IEEE80211_CHANCTX_CHANGE_AP) 896 goto update; 897 898 if (chandef->chan == phy->chandef.chan && 899 chandef->center_freq1 == phy->chandef.center_freq1 && 900 chandef->punctured == phy->chandef.punctured) { 901 /* Check if we are toggling between HT and non-HT, no-op */ 902 if (phy->chandef.width == chandef->width || 903 (phy->chandef.width <= NL80211_CHAN_WIDTH_20 && 904 chandef->width <= NL80211_CHAN_WIDTH_20)) 905 return; 906 } 907 update: 908 909 iwl_mld_update_phy_chandef(mld, ctx); 910 } 911 912 static u8 913 iwl_mld_chandef_get_primary_80(struct cfg80211_chan_def *chandef) 914 { 915 int data_start; 916 int control_start; 917 int bw; 918 919 if (chandef->width == NL80211_CHAN_WIDTH_320) 920 bw = 320; 921 else if (chandef->width == NL80211_CHAN_WIDTH_160) 922 bw = 160; 923 else 924 return 0; 925 926 /* data is bw wide so the start is half the width */ 927 data_start = chandef->center_freq1 - bw / 2; 928 /* control is 20Mhz width */ 929 control_start = chandef->chan->center_freq - 10; 930 931 return (control_start - data_start) / 80; 932 } 933 934 static bool iwl_mld_can_activate_link(struct iwl_mld *mld, 935 struct ieee80211_vif *vif, 936 struct ieee80211_bss_conf *link) 937 { 938 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 939 struct iwl_mld_sta *mld_sta; 940 struct iwl_mld_link_sta *link_sta; 941 942 /* In association, we activate the assoc link before adding the STA. */ 943 if (!mld_vif->ap_sta || !vif->cfg.assoc) 944 return true; 945 946 mld_sta = iwl_mld_sta_from_mac80211(mld_vif->ap_sta); 947 948 /* When switching links, we need to wait with the activation until the 949 * STA was added to the FW. It'll be activated in 950 * iwl_mld_update_link_stas 951 */ 952 link_sta = wiphy_dereference(mld->wiphy, mld_sta->link[link->link_id]); 953 954 /* In restart we can have a link_sta that doesn't exist in FW yet */ 955 return link_sta && link_sta->in_fw; 956 } 957 958 static 959 int iwl_mld_assign_vif_chanctx(struct ieee80211_hw *hw, 960 struct ieee80211_vif *vif, 961 struct ieee80211_bss_conf *link, 962 struct ieee80211_chanctx_conf *ctx) 963 { 964 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 965 struct iwl_mld_link *mld_link = iwl_mld_link_from_mac80211(link); 966 unsigned int n_active = iwl_mld_count_active_links(mld, vif); 967 int ret; 968 969 lockdep_assert_wiphy(mld->wiphy); 970 971 if (WARN_ON(!mld_link)) 972 return -EINVAL; 973 974 /* if the assigned one was not counted yet, count it now */ 975 if (!rcu_access_pointer(mld_link->chan_ctx)) { 976 n_active++; 977 978 /* Track addition of non-BSS link */ 979 if (ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_STATION) { 980 ret = iwl_mld_emlsr_check_non_bss_block(mld, 1); 981 if (ret) 982 return ret; 983 } 984 } 985 986 /* for AP, mac parameters such as HE support are updated at this stage. */ 987 if (vif->type == NL80211_IFTYPE_AP) { 988 ret = iwl_mld_mac_fw_action(mld, vif, FW_CTXT_ACTION_MODIFY); 989 990 if (ret) { 991 IWL_ERR(mld, "failed to update MAC %pM\n", vif->addr); 992 return -EINVAL; 993 } 994 } 995 996 rcu_assign_pointer(mld_link->chan_ctx, ctx); 997 998 if (n_active > 1) { 999 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1000 1001 iwl_mld_leave_omi_bw_reduction(mld); 1002 1003 /* Indicate to mac80211 that EML is enabled */ 1004 vif->driver_flags |= IEEE80211_VIF_EML_ACTIVE; 1005 1006 if (vif->active_links & BIT(mld_vif->emlsr.selected_links)) 1007 mld_vif->emlsr.primary = mld_vif->emlsr.selected_primary; 1008 else 1009 mld_vif->emlsr.primary = __ffs(vif->active_links); 1010 1011 iwl_dbg_tlv_time_point(&mld->fwrt, IWL_FW_INI_TIME_ESR_LINK_UP, 1012 NULL); 1013 } 1014 1015 /* First send the link command with the phy context ID. 1016 * Now that we have the phy, we know the band so also the rates 1017 */ 1018 ret = iwl_mld_change_link_in_fw(mld, link, 1019 LINK_CONTEXT_MODIFY_RATES_INFO); 1020 if (ret) 1021 goto err; 1022 1023 /* TODO: Initialize rate control for the AP station, since we might be 1024 * doing a link switch here - we cannot initialize it before since 1025 * this needs the phy context assigned (and in FW?), and we cannot 1026 * do it later because it needs to be initialized as soon as we're 1027 * able to TX on the link, i.e. when active. (task=link-switch) 1028 */ 1029 1030 /* Now activate the link */ 1031 if (iwl_mld_can_activate_link(mld, vif, link)) { 1032 ret = iwl_mld_activate_link(mld, link); 1033 if (ret) 1034 goto err; 1035 } 1036 1037 if (vif->type == NL80211_IFTYPE_STATION) 1038 iwl_mld_send_ap_tx_power_constraint_cmd(mld, vif, link); 1039 1040 if (vif->type == NL80211_IFTYPE_MONITOR) { 1041 ret = iwl_mld_add_mon_sta(mld, vif, link); 1042 if (ret) 1043 goto deactivate_link; 1044 1045 mld->monitor.p80 = 1046 iwl_mld_chandef_get_primary_80(&vif->bss_conf.chanreq.oper); 1047 } 1048 1049 return 0; 1050 1051 deactivate_link: 1052 if (mld_link->active) 1053 iwl_mld_deactivate_link(mld, link); 1054 err: 1055 RCU_INIT_POINTER(mld_link->chan_ctx, NULL); 1056 return ret; 1057 } 1058 1059 static 1060 void iwl_mld_unassign_vif_chanctx(struct ieee80211_hw *hw, 1061 struct ieee80211_vif *vif, 1062 struct ieee80211_bss_conf *link, 1063 struct ieee80211_chanctx_conf *ctx) 1064 { 1065 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1066 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1067 struct iwl_mld_link *mld_link = iwl_mld_link_from_mac80211(link); 1068 unsigned int n_active = iwl_mld_count_active_links(mld, vif); 1069 1070 if (WARN_ON(!mld_link)) 1071 return; 1072 1073 /* Track removal of non-BSS link */ 1074 if (ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_STATION) 1075 iwl_mld_emlsr_check_non_bss_block(mld, -1); 1076 1077 iwl_mld_deactivate_link(mld, link); 1078 1079 if (vif->type == NL80211_IFTYPE_MONITOR) 1080 iwl_mld_remove_mon_sta(mld, vif, link); 1081 1082 if (n_active > 1) { 1083 /* Indicate to mac80211 that EML is disabled */ 1084 vif->driver_flags &= ~IEEE80211_VIF_EML_ACTIVE; 1085 1086 iwl_dbg_tlv_time_point(&mld->fwrt, 1087 IWL_FW_INI_TIME_ESR_LINK_DOWN, 1088 NULL); 1089 } 1090 1091 RCU_INIT_POINTER(mld_link->chan_ctx, NULL); 1092 1093 /* in the non-MLO case, remove/re-add the link to clean up FW state. 1094 * In MLO, it'll be done in drv_change_vif_link 1095 */ 1096 if (!ieee80211_vif_is_mld(vif) && !mld_vif->ap_sta && 1097 !WARN_ON_ONCE(vif->cfg.assoc) && 1098 vif->type != NL80211_IFTYPE_AP && !mld->fw_status.in_hw_restart) { 1099 iwl_mld_remove_link(mld, link); 1100 iwl_mld_add_link(mld, link); 1101 } 1102 } 1103 1104 static 1105 int iwl_mld_mac80211_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 1106 { 1107 return 0; 1108 } 1109 1110 static void 1111 iwl_mld_link_info_changed_ap_ibss(struct iwl_mld *mld, 1112 struct ieee80211_vif *vif, 1113 struct ieee80211_bss_conf *link, 1114 u64 changes) 1115 { 1116 u32 link_changes = 0; 1117 1118 if (changes & BSS_CHANGED_ERP_SLOT) 1119 link_changes |= LINK_CONTEXT_MODIFY_RATES_INFO; 1120 1121 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT)) 1122 link_changes |= LINK_CONTEXT_MODIFY_PROTECT_FLAGS; 1123 1124 if (changes & (BSS_CHANGED_QOS | BSS_CHANGED_BANDWIDTH)) 1125 link_changes |= LINK_CONTEXT_MODIFY_QOS_PARAMS; 1126 1127 if (changes & BSS_CHANGED_HE_BSS_COLOR) 1128 link_changes |= LINK_CONTEXT_MODIFY_HE_PARAMS; 1129 1130 if (link_changes) 1131 iwl_mld_change_link_in_fw(mld, link, link_changes); 1132 1133 if (changes & BSS_CHANGED_BEACON) 1134 iwl_mld_update_beacon_template(mld, vif, link); 1135 } 1136 1137 static 1138 u32 iwl_mld_link_changed_mapping(struct iwl_mld *mld, 1139 struct ieee80211_vif *vif, 1140 struct ieee80211_bss_conf *link_conf, 1141 u64 changes) 1142 { 1143 u32 link_changes = 0; 1144 bool has_he, has_eht; 1145 1146 if (changes & BSS_CHANGED_QOS && vif->cfg.assoc && link_conf->qos) 1147 link_changes |= LINK_CONTEXT_MODIFY_QOS_PARAMS; 1148 1149 if (changes & (BSS_CHANGED_ERP_PREAMBLE | BSS_CHANGED_BASIC_RATES | 1150 BSS_CHANGED_ERP_SLOT)) 1151 link_changes |= LINK_CONTEXT_MODIFY_RATES_INFO; 1152 1153 if (changes & (BSS_CHANGED_HT | BSS_CHANGED_ERP_CTS_PROT)) 1154 link_changes |= LINK_CONTEXT_MODIFY_PROTECT_FLAGS; 1155 1156 /* TODO: task=MLO check mac80211's HE flags and if command is needed 1157 * every time there's a link change. Currently used flags are 1158 * BSS_CHANGED_HE_OBSS_PD and BSS_CHANGED_HE_BSS_COLOR. 1159 */ 1160 has_he = link_conf->he_support && !iwlwifi_mod_params.disable_11ax; 1161 has_eht = link_conf->eht_support && !iwlwifi_mod_params.disable_11be; 1162 1163 if (vif->cfg.assoc && (has_he || has_eht)) { 1164 IWL_DEBUG_MAC80211(mld, "Associated in HE mode\n"); 1165 link_changes |= LINK_CONTEXT_MODIFY_HE_PARAMS; 1166 } 1167 1168 return link_changes; 1169 } 1170 1171 static void 1172 iwl_mld_mac80211_link_info_changed_sta(struct iwl_mld *mld, 1173 struct ieee80211_vif *vif, 1174 struct ieee80211_bss_conf *link_conf, 1175 u64 changes) 1176 { 1177 u32 link_changes = iwl_mld_link_changed_mapping(mld, vif, link_conf, 1178 changes); 1179 1180 if (link_changes) 1181 iwl_mld_change_link_in_fw(mld, link_conf, link_changes); 1182 1183 if (changes & BSS_CHANGED_TPE) 1184 iwl_mld_send_ap_tx_power_constraint_cmd(mld, vif, link_conf); 1185 1186 if (changes & BSS_CHANGED_BEACON_INFO) 1187 iwl_mld_update_mac_power(mld, vif, false); 1188 1189 /* The firmware will wait quite a while after association before it 1190 * starts filtering the beacons. We can safely enable beacon filtering 1191 * upon CQM configuration, even if we didn't get a beacon yet. 1192 */ 1193 if (changes & (BSS_CHANGED_CQM | BSS_CHANGED_BEACON_INFO)) 1194 iwl_mld_enable_beacon_filter(mld, link_conf, false); 1195 1196 /* If we have used OMI before to reduce bandwidth to 80 MHz and then 1197 * increased to 160 MHz again, and then the AP changes to 320 MHz, it 1198 * will think that we're limited to 160 MHz right now. Update it by 1199 * requesting a new OMI bandwidth. 1200 */ 1201 if (changes & BSS_CHANGED_BANDWIDTH) { 1202 enum ieee80211_sta_rx_bandwidth bw; 1203 1204 bw = ieee80211_chan_width_to_rx_bw(link_conf->chanreq.oper.width); 1205 1206 iwl_mld_omi_ap_changed_bw(mld, link_conf, bw); 1207 1208 } 1209 1210 if (changes & BSS_CHANGED_BANDWIDTH) 1211 iwl_mld_retry_emlsr(mld, vif); 1212 } 1213 1214 static int iwl_mld_update_mu_groups(struct iwl_mld *mld, 1215 struct ieee80211_bss_conf *link_conf) 1216 { 1217 struct iwl_mu_group_mgmt_cmd cmd = {}; 1218 1219 BUILD_BUG_ON(sizeof(cmd.membership_status) != 1220 sizeof(link_conf->mu_group.membership)); 1221 BUILD_BUG_ON(sizeof(cmd.user_position) != 1222 sizeof(link_conf->mu_group.position)); 1223 1224 memcpy(cmd.membership_status, link_conf->mu_group.membership, 1225 WLAN_MEMBERSHIP_LEN); 1226 memcpy(cmd.user_position, link_conf->mu_group.position, 1227 WLAN_USER_POSITION_LEN); 1228 1229 return iwl_mld_send_cmd_pdu(mld, 1230 WIDE_ID(DATA_PATH_GROUP, 1231 UPDATE_MU_GROUPS_CMD), 1232 &cmd); 1233 } 1234 1235 static void 1236 iwl_mld_mac80211_link_info_changed(struct ieee80211_hw *hw, 1237 struct ieee80211_vif *vif, 1238 struct ieee80211_bss_conf *link_conf, 1239 u64 changes) 1240 { 1241 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1242 1243 switch (vif->type) { 1244 case NL80211_IFTYPE_STATION: 1245 iwl_mld_mac80211_link_info_changed_sta(mld, vif, link_conf, 1246 changes); 1247 break; 1248 case NL80211_IFTYPE_AP: 1249 case NL80211_IFTYPE_ADHOC: 1250 iwl_mld_link_info_changed_ap_ibss(mld, vif, link_conf, 1251 changes); 1252 break; 1253 case NL80211_IFTYPE_MONITOR: 1254 /* The firmware tracks this on its own in STATION mode, but 1255 * obviously not in sniffer mode. 1256 */ 1257 if (changes & BSS_CHANGED_MU_GROUPS) 1258 iwl_mld_update_mu_groups(mld, link_conf); 1259 break; 1260 default: 1261 /* shouldn't happen */ 1262 WARN_ON_ONCE(1); 1263 } 1264 1265 /* We now know our BSSID, we can configure the MAC context with 1266 * eht_support if needed. 1267 */ 1268 if (changes & BSS_CHANGED_BSSID) 1269 iwl_mld_mac_fw_action(mld, vif, FW_CTXT_ACTION_MODIFY); 1270 1271 if (changes & BSS_CHANGED_TXPOWER) 1272 iwl_mld_set_tx_power(mld, link_conf, link_conf->txpower); 1273 } 1274 1275 static void 1276 iwl_mld_smps_workaround(struct iwl_mld *mld, struct ieee80211_vif *vif, bool enable) 1277 { 1278 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1279 bool workaround_required = 1280 iwl_fw_lookup_cmd_ver(mld->fw, MAC_PM_POWER_TABLE, 0) < 2; 1281 1282 if (!workaround_required) 1283 return; 1284 1285 /* Send the device-level power commands since the 1286 * firmware checks the POWER_TABLE_CMD's POWER_SAVE_EN bit to 1287 * determine SMPS mode. 1288 */ 1289 if (mld_vif->ps_disabled == !enable) 1290 return; 1291 1292 mld_vif->ps_disabled = !enable; 1293 1294 iwl_mld_update_device_power(mld, false); 1295 } 1296 1297 static 1298 void iwl_mld_mac80211_vif_cfg_changed(struct ieee80211_hw *hw, 1299 struct ieee80211_vif *vif, 1300 u64 changes) 1301 { 1302 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1303 int ret; 1304 1305 lockdep_assert_wiphy(mld->wiphy); 1306 1307 if (vif->type != NL80211_IFTYPE_STATION) 1308 return; 1309 1310 if (changes & BSS_CHANGED_ASSOC) { 1311 ret = iwl_mld_mac_fw_action(mld, vif, FW_CTXT_ACTION_MODIFY); 1312 if (ret) 1313 IWL_ERR(mld, "failed to update context\n"); 1314 1315 if (vif->cfg.assoc) { 1316 /* Clear statistics to get clean beacon counter, and 1317 * ask for periodic statistics, as they are needed for 1318 * link selection and RX OMI decisions. 1319 */ 1320 iwl_mld_clear_stats_in_fw(mld); 1321 iwl_mld_request_periodic_fw_stats(mld, true); 1322 1323 iwl_mld_set_vif_associated(mld, vif); 1324 } else { 1325 iwl_mld_request_periodic_fw_stats(mld, false); 1326 } 1327 } 1328 1329 if (changes & BSS_CHANGED_PS) { 1330 iwl_mld_smps_workaround(mld, vif, vif->cfg.ps); 1331 iwl_mld_update_mac_power(mld, vif, false); 1332 } 1333 1334 /* TODO: task=MLO BSS_CHANGED_MLD_VALID_LINKS/CHANGED_MLD_TTLM */ 1335 } 1336 1337 static int 1338 iwl_mld_mac80211_hw_scan(struct ieee80211_hw *hw, 1339 struct ieee80211_vif *vif, 1340 struct ieee80211_scan_request *hw_req) 1341 { 1342 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1343 int ret; 1344 1345 if (WARN_ON(!hw_req->req.n_channels || 1346 hw_req->req.n_channels > 1347 mld->fw->ucode_capa.n_scan_channels)) 1348 return -EINVAL; 1349 1350 ret = iwl_mld_regular_scan_start(mld, vif, &hw_req->req, &hw_req->ies); 1351 if (!ret) { 1352 /* We will be busy with scanning, so the counters may not reflect the 1353 * reality. Stop checking the counters until the scan ends 1354 */ 1355 iwl_mld_start_ignoring_tpt_updates(mld); 1356 } 1357 1358 return ret; 1359 } 1360 1361 static void 1362 iwl_mld_mac80211_cancel_hw_scan(struct ieee80211_hw *hw, 1363 struct ieee80211_vif *vif) 1364 { 1365 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1366 1367 /* Due to a race condition, it's possible that mac80211 asks 1368 * us to stop a hw_scan when it's already stopped. This can 1369 * happen, for instance, if we stopped the scan ourselves, 1370 * called ieee80211_scan_completed() and the userspace called 1371 * cancel scan before ieee80211_scan_work() could run. 1372 * To handle that, simply return if the scan is not running. 1373 */ 1374 if (mld->scan.status & IWL_MLD_SCAN_REGULAR) { 1375 iwl_mld_scan_stop(mld, IWL_MLD_SCAN_REGULAR, true); 1376 /* Scan is over, we can check again the tpt counters */ 1377 iwl_mld_stop_ignoring_tpt_updates(mld); 1378 } 1379 } 1380 1381 static int 1382 iwl_mld_mac80211_sched_scan_start(struct ieee80211_hw *hw, 1383 struct ieee80211_vif *vif, 1384 struct cfg80211_sched_scan_request *req, 1385 struct ieee80211_scan_ies *ies) 1386 { 1387 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1388 1389 return iwl_mld_sched_scan_start(mld, vif, req, ies, IWL_MLD_SCAN_SCHED); 1390 } 1391 1392 static int 1393 iwl_mld_mac80211_sched_scan_stop(struct ieee80211_hw *hw, 1394 struct ieee80211_vif *vif) 1395 { 1396 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1397 1398 /* Due to a race condition, it's possible that mac80211 asks 1399 * us to stop a sched_scan when it's already stopped. This 1400 * can happen, for instance, if we stopped the scan ourselves, 1401 * called ieee80211_sched_scan_stopped() and the userspace called 1402 * stop sched scan before ieee80211_sched_scan_stopped_work() 1403 * could run. To handle this, simply return if the scan is 1404 * not running. 1405 */ 1406 if (!(mld->scan.status & IWL_MLD_SCAN_SCHED)) 1407 return 0; 1408 1409 return iwl_mld_scan_stop(mld, IWL_MLD_SCAN_SCHED, false); 1410 } 1411 1412 static void 1413 iwl_mld_restart_complete_vif(void *data, u8 *mac, struct ieee80211_vif *vif) 1414 { 1415 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1416 struct ieee80211_bss_conf *link_conf; 1417 struct iwl_mld *mld = data; 1418 int link_id; 1419 1420 for_each_vif_active_link(vif, link_conf, link_id) { 1421 enum ieee80211_sta_rx_bandwidth bw; 1422 struct iwl_mld_link *mld_link; 1423 1424 mld_link = wiphy_dereference(mld->wiphy, 1425 mld_vif->link[link_id]); 1426 1427 if (WARN_ON_ONCE(!mld_link)) 1428 continue; 1429 1430 bw = mld_link->rx_omi.bw_in_progress; 1431 if (bw) 1432 iwl_mld_change_link_omi_bw(mld, link_conf, bw); 1433 } 1434 } 1435 1436 static void 1437 iwl_mld_mac80211_reconfig_complete(struct ieee80211_hw *hw, 1438 enum ieee80211_reconfig_type reconfig_type) 1439 { 1440 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1441 1442 switch (reconfig_type) { 1443 case IEEE80211_RECONFIG_TYPE_RESTART: 1444 mld->fw_status.in_hw_restart = false; 1445 iwl_mld_send_recovery_cmd(mld, ERROR_RECOVERY_END_OF_RECOVERY); 1446 1447 ieee80211_iterate_interfaces(mld->hw, 1448 IEEE80211_IFACE_ITER_NORMAL, 1449 iwl_mld_restart_complete_vif, mld); 1450 1451 iwl_trans_finish_sw_reset(mld->trans); 1452 /* no need to lock, adding in parallel would schedule too */ 1453 if (!list_empty(&mld->txqs_to_add)) 1454 wiphy_work_queue(mld->wiphy, &mld->add_txqs_wk); 1455 1456 IWL_INFO(mld, "restart completed\n"); 1457 break; 1458 case IEEE80211_RECONFIG_TYPE_SUSPEND: 1459 break; 1460 } 1461 } 1462 1463 static 1464 void iwl_mld_mac80211_mgd_prepare_tx(struct ieee80211_hw *hw, 1465 struct ieee80211_vif *vif, 1466 struct ieee80211_prep_tx_info *info) 1467 { 1468 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1469 u32 duration = IWL_MLD_SESSION_PROTECTION_ASSOC_TIME_MS; 1470 1471 /* After a successful association the connection is etalibeshed 1472 * and we can rely on the quota to send the disassociation frame. 1473 */ 1474 if (info->was_assoc) 1475 return; 1476 1477 if (info->duration > duration) 1478 duration = info->duration; 1479 1480 iwl_mld_schedule_session_protection(mld, vif, duration, 1481 IWL_MLD_SESSION_PROTECTION_MIN_TIME_MS, 1482 info->link_id); 1483 } 1484 1485 static 1486 void iwl_mld_mac_mgd_complete_tx(struct ieee80211_hw *hw, 1487 struct ieee80211_vif *vif, 1488 struct ieee80211_prep_tx_info *info) 1489 { 1490 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1491 1492 /* Successful authentication is the only case that requires to let 1493 * the session protection go. We'll need it for the upcoming 1494 * association. For all the other cases, we need to cancel the session 1495 * protection. 1496 * After successful association the connection is established and 1497 * further mgd tx can rely on the quota. 1498 */ 1499 if (info->success && info->subtype == IEEE80211_STYPE_AUTH) 1500 return; 1501 1502 /* The firmware will be on medium after we configure the vif as 1503 * associated. Removing the session protection allows the firmware 1504 * to stop being on medium. In order to ensure the continuity of our 1505 * presence on medium, we need first to configure the vif as associated 1506 * and only then, remove the session protection. 1507 * Currently, mac80211 calls vif_cfg_changed() first and then, 1508 * drv_mgd_complete_tx(). Ensure that this assumption stays true by 1509 * a warning. 1510 */ 1511 WARN_ON(info->success && 1512 (info->subtype == IEEE80211_STYPE_ASSOC_REQ || 1513 info->subtype == IEEE80211_STYPE_REASSOC_REQ) && 1514 !vif->cfg.assoc); 1515 1516 iwl_mld_cancel_session_protection(mld, vif, info->link_id); 1517 } 1518 1519 static int 1520 iwl_mld_mac80211_conf_tx(struct ieee80211_hw *hw, 1521 struct ieee80211_vif *vif, 1522 unsigned int link_id, u16 ac, 1523 const struct ieee80211_tx_queue_params *params) 1524 { 1525 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1526 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1527 struct iwl_mld_link *link; 1528 1529 lockdep_assert_wiphy(mld->wiphy); 1530 1531 link = iwl_mld_link_dereference_check(mld_vif, link_id); 1532 if (!link) 1533 return -EINVAL; 1534 1535 link->queue_params[ac] = *params; 1536 1537 /* No need to update right away, we'll get BSS_CHANGED_QOS 1538 * The exception is P2P_DEVICE interface which needs immediate update. 1539 */ 1540 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 1541 iwl_mld_change_link_in_fw(mld, &vif->bss_conf, 1542 LINK_CONTEXT_MODIFY_QOS_PARAMS); 1543 1544 return 0; 1545 } 1546 1547 static void iwl_mld_set_uapsd(struct iwl_mld *mld, struct ieee80211_vif *vif) 1548 { 1549 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 1550 1551 if (vif->type != NL80211_IFTYPE_STATION) 1552 return; 1553 1554 if (vif->p2p && 1555 !(iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_P2P_CLIENT)) 1556 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 1557 1558 if (!vif->p2p && 1559 !(iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) 1560 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 1561 } 1562 1563 int iwl_mld_tdls_sta_count(struct iwl_mld *mld) 1564 { 1565 int count = 0; 1566 1567 lockdep_assert_wiphy(mld->wiphy); 1568 1569 for (int i = 0; i < mld->fw->ucode_capa.num_stations; i++) { 1570 struct ieee80211_link_sta *link_sta; 1571 1572 link_sta = wiphy_dereference(mld->wiphy, 1573 mld->fw_id_to_link_sta[i]); 1574 if (IS_ERR_OR_NULL(link_sta)) 1575 continue; 1576 1577 if (!link_sta->sta->tdls) 1578 continue; 1579 1580 count++; 1581 } 1582 1583 return count; 1584 } 1585 1586 static void iwl_mld_check_he_obss_narrow_bw_ru_iter(struct wiphy *wiphy, 1587 struct cfg80211_bss *bss, 1588 void *_data) 1589 { 1590 bool *tolerated = _data; 1591 const struct cfg80211_bss_ies *ies; 1592 const struct element *elem; 1593 1594 rcu_read_lock(); 1595 ies = rcu_dereference(bss->ies); 1596 elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, ies->data, 1597 ies->len); 1598 1599 if (!elem || elem->datalen < 10 || 1600 !(elem->data[10] & 1601 WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT)) { 1602 *tolerated = false; 1603 } 1604 rcu_read_unlock(); 1605 } 1606 1607 static void 1608 iwl_mld_check_he_obss_narrow_bw_ru(struct iwl_mld *mld, 1609 struct iwl_mld_link *mld_link, 1610 struct ieee80211_bss_conf *link_conf) 1611 { 1612 bool tolerated = true; 1613 1614 if (WARN_ON_ONCE(!link_conf->chanreq.oper.chan)) 1615 return; 1616 1617 if (!(link_conf->chanreq.oper.chan->flags & IEEE80211_CHAN_RADAR)) { 1618 mld_link->he_ru_2mhz_block = false; 1619 return; 1620 } 1621 1622 cfg80211_bss_iter(mld->wiphy, &link_conf->chanreq.oper, 1623 iwl_mld_check_he_obss_narrow_bw_ru_iter, &tolerated); 1624 1625 /* If there is at least one AP on radar channel that cannot 1626 * tolerate 26-tone RU UL OFDMA transmissions using HE TB PPDU. 1627 */ 1628 mld_link->he_ru_2mhz_block = !tolerated; 1629 } 1630 1631 static void iwl_mld_link_set_2mhz_block(struct iwl_mld *mld, 1632 struct ieee80211_vif *vif, 1633 struct ieee80211_sta *sta) 1634 { 1635 struct ieee80211_link_sta *link_sta; 1636 unsigned int link_id; 1637 1638 for_each_sta_active_link(vif, sta, link_sta, link_id) { 1639 struct ieee80211_bss_conf *link_conf = 1640 link_conf_dereference_protected(vif, link_id); 1641 struct iwl_mld_link *mld_link = 1642 iwl_mld_link_from_mac80211(link_conf); 1643 1644 if (WARN_ON(!link_conf || !mld_link)) 1645 continue; 1646 1647 if (link_sta->he_cap.has_he) 1648 iwl_mld_check_he_obss_narrow_bw_ru(mld, mld_link, 1649 link_conf); 1650 } 1651 } 1652 1653 static int iwl_mld_move_sta_state_up(struct iwl_mld *mld, 1654 struct ieee80211_vif *vif, 1655 struct ieee80211_sta *sta, 1656 enum ieee80211_sta_state old_state, 1657 enum ieee80211_sta_state new_state) 1658 { 1659 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1660 int tdls_count = 0; 1661 int ret; 1662 1663 if (old_state == IEEE80211_STA_NOTEXIST && 1664 new_state == IEEE80211_STA_NONE) { 1665 if (sta->tdls) { 1666 if (vif->p2p || hweight8(mld->used_phy_ids) != 1) 1667 return -EBUSY; 1668 1669 tdls_count = iwl_mld_tdls_sta_count(mld); 1670 if (tdls_count >= IWL_TDLS_STA_COUNT) 1671 return -EBUSY; 1672 } 1673 1674 /* 1675 * If this is the first STA (i.e. the AP) it won't do 1676 * anything, otherwise must leave for any new STA on 1677 * any other interface, or for TDLS, etc. 1678 * Need to call this _before_ adding the STA so it can 1679 * look up the one STA to use to ask mac80211 to leave 1680 * OMI; in the unlikely event that adding the new STA 1681 * then fails we'll just re-enter OMI later (via the 1682 * statistics notification handling.) 1683 */ 1684 iwl_mld_leave_omi_bw_reduction(mld); 1685 1686 ret = iwl_mld_add_sta(mld, sta, vif, STATION_TYPE_PEER); 1687 if (ret) 1688 return ret; 1689 1690 /* just added first TDLS STA, so disable PM */ 1691 if (sta->tdls && tdls_count == 0) 1692 iwl_mld_update_mac_power(mld, vif, false); 1693 1694 if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls) 1695 mld_vif->ap_sta = sta; 1696 1697 /* Initialize TLC here already - this really tells 1698 * the firmware only what the supported legacy rates are 1699 * (may be) since it's initialized already from what the 1700 * AP advertised in the beacon/probe response. This will 1701 * allow the firmware to send auth/assoc frames with one 1702 * of the supported rates already, rather than having to 1703 * use a mandatory rate. 1704 * If we're the AP, we'll just assume mandatory rates at 1705 * this point, but we know nothing about the STA anyway. 1706 */ 1707 iwl_mld_config_tlc(mld, vif, sta); 1708 1709 return ret; 1710 } else if (old_state == IEEE80211_STA_NONE && 1711 new_state == IEEE80211_STA_AUTH) { 1712 iwl_mld_set_uapsd(mld, vif); 1713 return 0; 1714 } else if (old_state == IEEE80211_STA_AUTH && 1715 new_state == IEEE80211_STA_ASSOC) { 1716 ret = iwl_mld_update_all_link_stations(mld, sta); 1717 1718 if (vif->type == NL80211_IFTYPE_STATION) 1719 iwl_mld_link_set_2mhz_block(mld, vif, sta); 1720 /* Now the link_sta's capabilities are set, update the FW */ 1721 iwl_mld_config_tlc(mld, vif, sta); 1722 1723 if (vif->type == NL80211_IFTYPE_AP) { 1724 /* Update MAC_CFG_FILTER_ACCEPT_BEACON if at least 1725 * one sta is associated 1726 */ 1727 if (++mld_vif->num_associated_stas == 1) 1728 ret = iwl_mld_mac_fw_action(mld, vif, 1729 FW_CTXT_ACTION_MODIFY); 1730 } 1731 1732 return ret; 1733 } else if (old_state == IEEE80211_STA_ASSOC && 1734 new_state == IEEE80211_STA_AUTHORIZED) { 1735 ret = 0; 1736 1737 if (!sta->tdls) { 1738 mld_vif->authorized = true; 1739 1740 /* Ensure any block due to a non-BSS link is synced */ 1741 iwl_mld_emlsr_check_non_bss_block(mld, 0); 1742 1743 /* Block EMLSR until a certain throughput it reached */ 1744 if (!mld->fw_status.in_hw_restart && 1745 IWL_MLD_ENTER_EMLSR_TPT_THRESH > 0) 1746 iwl_mld_block_emlsr(mld_vif->mld, vif, 1747 IWL_MLD_EMLSR_BLOCKED_TPT, 1748 0); 1749 1750 /* clear COEX_HIGH_PRIORITY_ENABLE */ 1751 ret = iwl_mld_mac_fw_action(mld, vif, 1752 FW_CTXT_ACTION_MODIFY); 1753 if (ret) 1754 return ret; 1755 iwl_mld_smps_workaround(mld, vif, vif->cfg.ps); 1756 } 1757 1758 /* MFP is set by default before the station is authorized. 1759 * Clear it here in case it's not used. 1760 */ 1761 if (!sta->mfp) 1762 ret = iwl_mld_update_all_link_stations(mld, sta); 1763 1764 /* We can use wide bandwidth now, not only 20 MHz */ 1765 iwl_mld_config_tlc(mld, vif, sta); 1766 1767 return ret; 1768 } else { 1769 return -EINVAL; 1770 } 1771 } 1772 1773 static int iwl_mld_move_sta_state_down(struct iwl_mld *mld, 1774 struct ieee80211_vif *vif, 1775 struct ieee80211_sta *sta, 1776 enum ieee80211_sta_state old_state, 1777 enum ieee80211_sta_state new_state) 1778 { 1779 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1780 1781 if (old_state == IEEE80211_STA_AUTHORIZED && 1782 new_state == IEEE80211_STA_ASSOC) { 1783 if (!sta->tdls) { 1784 mld_vif->authorized = false; 1785 1786 memset(&mld_vif->emlsr.zeroed_on_not_authorized, 0, 1787 sizeof(mld_vif->emlsr.zeroed_on_not_authorized)); 1788 1789 wiphy_delayed_work_cancel(mld->wiphy, 1790 &mld_vif->emlsr.prevent_done_wk); 1791 wiphy_delayed_work_cancel(mld->wiphy, 1792 &mld_vif->emlsr.tmp_non_bss_done_wk); 1793 wiphy_work_cancel(mld->wiphy, &mld_vif->emlsr.unblock_tpt_wk); 1794 wiphy_delayed_work_cancel(mld->wiphy, 1795 &mld_vif->emlsr.check_tpt_wk); 1796 1797 iwl_mld_reset_cca_40mhz_workaround(mld, vif); 1798 iwl_mld_smps_workaround(mld, vif, true); 1799 } 1800 1801 /* once we move into assoc state, need to update the FW to 1802 * stop using wide bandwidth 1803 */ 1804 iwl_mld_config_tlc(mld, vif, sta); 1805 } else if (old_state == IEEE80211_STA_ASSOC && 1806 new_state == IEEE80211_STA_AUTH) { 1807 if (vif->type == NL80211_IFTYPE_AP && 1808 !WARN_ON(!mld_vif->num_associated_stas)) { 1809 /* Update MAC_CFG_FILTER_ACCEPT_BEACON if the last sta 1810 * is disassociating 1811 */ 1812 if (--mld_vif->num_associated_stas == 0) 1813 iwl_mld_mac_fw_action(mld, vif, 1814 FW_CTXT_ACTION_MODIFY); 1815 } 1816 } else if (old_state == IEEE80211_STA_AUTH && 1817 new_state == IEEE80211_STA_NONE) { 1818 /* nothing */ 1819 } else if (old_state == IEEE80211_STA_NONE && 1820 new_state == IEEE80211_STA_NOTEXIST) { 1821 iwl_mld_remove_sta(mld, sta); 1822 1823 if (sta->tdls && iwl_mld_tdls_sta_count(mld) == 0) { 1824 /* just removed last TDLS STA, so enable PM */ 1825 iwl_mld_update_mac_power(mld, vif, false); 1826 } 1827 } else { 1828 return -EINVAL; 1829 } 1830 return 0; 1831 } 1832 1833 static int iwl_mld_mac80211_sta_state(struct ieee80211_hw *hw, 1834 struct ieee80211_vif *vif, 1835 struct ieee80211_sta *sta, 1836 enum ieee80211_sta_state old_state, 1837 enum ieee80211_sta_state new_state) 1838 { 1839 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1840 struct iwl_mld_sta *mld_sta = iwl_mld_sta_from_mac80211(sta); 1841 1842 IWL_DEBUG_MAC80211(mld, "station %pM state change %d->%d\n", 1843 sta->addr, old_state, new_state); 1844 1845 mld_sta->sta_state = new_state; 1846 1847 if (old_state < new_state) 1848 return iwl_mld_move_sta_state_up(mld, vif, sta, old_state, 1849 new_state); 1850 else 1851 return iwl_mld_move_sta_state_down(mld, vif, sta, old_state, 1852 new_state); 1853 } 1854 1855 static void iwl_mld_mac80211_flush(struct ieee80211_hw *hw, 1856 struct ieee80211_vif *vif, 1857 u32 queues, bool drop) 1858 { 1859 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1860 1861 /* Make sure we're done with the deferred traffic before flushing */ 1862 iwl_mld_add_txq_list(mld); 1863 1864 for (int i = 0; i < mld->fw->ucode_capa.num_stations; i++) { 1865 struct ieee80211_link_sta *link_sta = 1866 wiphy_dereference(mld->wiphy, 1867 mld->fw_id_to_link_sta[i]); 1868 1869 if (IS_ERR_OR_NULL(link_sta)) 1870 continue; 1871 1872 /* Check that the sta belongs to the given vif */ 1873 if (vif && vif != iwl_mld_sta_from_mac80211(link_sta->sta)->vif) 1874 continue; 1875 1876 if (drop) 1877 iwl_mld_flush_sta_txqs(mld, link_sta->sta); 1878 else 1879 iwl_mld_wait_sta_txqs_empty(mld, link_sta->sta); 1880 } 1881 } 1882 1883 static void iwl_mld_mac80211_flush_sta(struct ieee80211_hw *hw, 1884 struct ieee80211_vif *vif, 1885 struct ieee80211_sta *sta) 1886 { 1887 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1888 1889 iwl_mld_flush_sta_txqs(mld, sta); 1890 } 1891 1892 static int 1893 iwl_mld_mac80211_ampdu_action(struct ieee80211_hw *hw, 1894 struct ieee80211_vif *vif, 1895 struct ieee80211_ampdu_params *params) 1896 { 1897 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1898 struct ieee80211_sta *sta = params->sta; 1899 enum ieee80211_ampdu_mlme_action action = params->action; 1900 u16 tid = params->tid; 1901 u16 ssn = params->ssn; 1902 u16 buf_size = params->buf_size; 1903 u16 timeout = params->timeout; 1904 int ret; 1905 1906 IWL_DEBUG_HT(mld, "A-MPDU action on addr %pM tid: %d action: %d\n", 1907 sta->addr, tid, action); 1908 1909 switch (action) { 1910 case IEEE80211_AMPDU_RX_START: 1911 ret = iwl_mld_ampdu_rx_start(mld, sta, tid, ssn, buf_size, 1912 timeout); 1913 break; 1914 case IEEE80211_AMPDU_RX_STOP: 1915 ret = iwl_mld_ampdu_rx_stop(mld, sta, tid); 1916 break; 1917 default: 1918 /* The mac80211 TX_AMPDU_SETUP_IN_HW flag is set for all 1919 * devices, since all support TX A-MPDU offload in hardware. 1920 * Therefore, no TX action should be requested here. 1921 */ 1922 WARN_ON_ONCE(1); 1923 return -EINVAL; 1924 } 1925 1926 return ret; 1927 } 1928 1929 static bool iwl_mld_can_hw_csum(struct sk_buff *skb) 1930 { 1931 u8 protocol = ip_hdr(skb)->protocol; 1932 1933 return protocol == IPPROTO_TCP || protocol == IPPROTO_UDP; 1934 } 1935 1936 static bool iwl_mld_mac80211_can_aggregate(struct ieee80211_hw *hw, 1937 struct sk_buff *head, 1938 struct sk_buff *skb) 1939 { 1940 if (!IS_ENABLED(CONFIG_INET)) 1941 return false; 1942 1943 /* For now don't aggregate IPv6 in AMSDU */ 1944 if (skb->protocol != htons(ETH_P_IP)) 1945 return false; 1946 1947 /* Allow aggregation only if both frames have the same HW csum offload 1948 * capability, ensuring consistent HW or SW csum handling in A-MSDU. 1949 */ 1950 return iwl_mld_can_hw_csum(skb) == iwl_mld_can_hw_csum(head); 1951 } 1952 1953 static void iwl_mld_mac80211_sync_rx_queues(struct ieee80211_hw *hw) 1954 { 1955 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1956 1957 iwl_mld_sync_rx_queues(mld, IWL_MLD_RXQ_EMPTY, NULL, 0); 1958 } 1959 1960 static void iwl_mld_sta_rc_update(struct ieee80211_hw *hw, 1961 struct ieee80211_vif *vif, 1962 struct ieee80211_link_sta *link_sta, 1963 u32 changed) 1964 { 1965 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1966 1967 if (changed & (IEEE80211_RC_BW_CHANGED | 1968 IEEE80211_RC_SUPP_RATES_CHANGED | 1969 IEEE80211_RC_NSS_CHANGED)) { 1970 struct ieee80211_bss_conf *link = 1971 link_conf_dereference_check(vif, link_sta->link_id); 1972 1973 if (WARN_ON(!link)) 1974 return; 1975 1976 iwl_mld_config_tlc_link(mld, vif, link, link_sta); 1977 } 1978 } 1979 1980 #ifdef CONFIG_PM_SLEEP 1981 static void iwl_mld_set_wakeup(struct ieee80211_hw *hw, bool enabled) 1982 { 1983 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1984 1985 device_set_wakeup_enable(mld->trans->dev, enabled); 1986 } 1987 1988 /* Returns 0 on success. 1 if failed to suspend with wowlan: 1989 * If the circumstances didn't satisfy the conditions for suspension 1990 * with wowlan, mac80211 would use the no_wowlan flow. 1991 * If an error had occurred we update the trans status and state here 1992 * and the result will be stopping the FW. 1993 */ 1994 static int 1995 iwl_mld_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1996 { 1997 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1998 int ret; 1999 2000 iwl_fw_runtime_suspend(&mld->fwrt); 2001 2002 ret = iwl_mld_wowlan_suspend(mld, wowlan); 2003 if (ret) { 2004 if (ret < 0) { 2005 mld->trans->state = IWL_TRANS_NO_FW; 2006 set_bit(STATUS_FW_ERROR, &mld->trans->status); 2007 } 2008 return 1; 2009 } 2010 2011 if (iwl_mld_no_wowlan_suspend(mld)) 2012 return 1; 2013 2014 return 0; 2015 } 2016 2017 static int iwl_mld_resume(struct ieee80211_hw *hw) 2018 { 2019 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2020 int ret; 2021 2022 ret = iwl_mld_wowlan_resume(mld); 2023 if (ret) 2024 return ret; 2025 2026 iwl_fw_runtime_resume(&mld->fwrt); 2027 2028 iwl_mld_low_latency_restart(mld); 2029 2030 return 0; 2031 } 2032 #endif 2033 2034 static int iwl_mld_alloc_ptk_pn(struct iwl_mld *mld, 2035 struct iwl_mld_sta *mld_sta, 2036 struct ieee80211_key_conf *key, 2037 struct iwl_mld_ptk_pn **ptk_pn) 2038 { 2039 u8 num_rx_queues = mld->trans->info.num_rxqs; 2040 int keyidx = key->keyidx; 2041 struct ieee80211_key_seq seq; 2042 2043 if (WARN_ON(keyidx >= ARRAY_SIZE(mld_sta->ptk_pn))) 2044 return -EINVAL; 2045 2046 WARN_ON(rcu_access_pointer(mld_sta->ptk_pn[keyidx])); 2047 *ptk_pn = kzalloc(struct_size(*ptk_pn, q, num_rx_queues), 2048 GFP_KERNEL); 2049 if (!*ptk_pn) 2050 return -ENOMEM; 2051 2052 for (u8 tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 2053 ieee80211_get_key_rx_seq(key, tid, &seq); 2054 for (u8 q = 0; q < num_rx_queues; q++) 2055 memcpy((*ptk_pn)->q[q].pn[tid], seq.ccmp.pn, 2056 IEEE80211_CCMP_PN_LEN); 2057 } 2058 2059 rcu_assign_pointer(mld_sta->ptk_pn[keyidx], *ptk_pn); 2060 2061 return 0; 2062 } 2063 2064 static int iwl_mld_set_key_add(struct iwl_mld *mld, 2065 struct ieee80211_vif *vif, 2066 struct ieee80211_sta *sta, 2067 struct ieee80211_key_conf *key) 2068 { 2069 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2070 struct iwl_mld_sta *mld_sta = 2071 sta ? iwl_mld_sta_from_mac80211(sta) : NULL; 2072 struct iwl_mld_ptk_pn *ptk_pn = NULL; 2073 int keyidx = key->keyidx; 2074 int ret; 2075 2076 /* Will be set to 0 if added successfully */ 2077 key->hw_key_idx = STA_KEY_IDX_INVALID; 2078 2079 switch (key->cipher) { 2080 case WLAN_CIPHER_SUITE_WEP40: 2081 case WLAN_CIPHER_SUITE_WEP104: 2082 IWL_DEBUG_MAC80211(mld, "Use SW encryption for WEP\n"); 2083 return -EOPNOTSUPP; 2084 case WLAN_CIPHER_SUITE_TKIP: 2085 if (vif->type == NL80211_IFTYPE_STATION) { 2086 key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE; 2087 break; 2088 } 2089 IWL_DEBUG_MAC80211(mld, "Use SW encryption for TKIP\n"); 2090 return -EOPNOTSUPP; 2091 case WLAN_CIPHER_SUITE_CCMP: 2092 case WLAN_CIPHER_SUITE_GCMP: 2093 case WLAN_CIPHER_SUITE_GCMP_256: 2094 case WLAN_CIPHER_SUITE_AES_CMAC: 2095 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2096 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2097 break; 2098 default: 2099 return -EOPNOTSUPP; 2100 } 2101 2102 if (vif->type == NL80211_IFTYPE_STATION && 2103 (keyidx == 6 || keyidx == 7)) 2104 rcu_assign_pointer(mld_vif->bigtks[keyidx - 6], key); 2105 2106 /* After exiting from RFKILL, hostapd configures GTK/ITGK before the 2107 * AP is started, but those keys can't be sent to the FW before the 2108 * MCAST/BCAST STAs are added to it (which happens upon AP start). 2109 * Store it here to be sent later when the AP is started. 2110 */ 2111 if ((vif->type == NL80211_IFTYPE_ADHOC || 2112 vif->type == NL80211_IFTYPE_AP) && !sta && 2113 !mld_vif->ap_ibss_active) 2114 return iwl_mld_store_ap_early_key(mld, key, mld_vif); 2115 2116 if (!mld->fw_status.in_hw_restart && mld_sta && 2117 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 2118 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 2119 key->cipher == WLAN_CIPHER_SUITE_GCMP || 2120 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 2121 ret = iwl_mld_alloc_ptk_pn(mld, mld_sta, key, &ptk_pn); 2122 if (ret) 2123 return ret; 2124 } 2125 2126 IWL_DEBUG_MAC80211(mld, "set hwcrypto key (sta:%pM, id:%d)\n", 2127 sta ? sta->addr : NULL, keyidx); 2128 2129 ret = iwl_mld_add_key(mld, vif, sta, key); 2130 if (ret) { 2131 IWL_WARN(mld, "set key failed (%d)\n", ret); 2132 if (ptk_pn) { 2133 RCU_INIT_POINTER(mld_sta->ptk_pn[keyidx], NULL); 2134 kfree(ptk_pn); 2135 } 2136 2137 return -EOPNOTSUPP; 2138 } 2139 2140 return 0; 2141 } 2142 2143 static void iwl_mld_set_key_remove(struct iwl_mld *mld, 2144 struct ieee80211_vif *vif, 2145 struct ieee80211_sta *sta, 2146 struct ieee80211_key_conf *key) 2147 { 2148 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2149 struct iwl_mld_sta *mld_sta = 2150 sta ? iwl_mld_sta_from_mac80211(sta) : NULL; 2151 int keyidx = key->keyidx; 2152 2153 if (vif->type == NL80211_IFTYPE_STATION && 2154 (keyidx == 6 || keyidx == 7)) 2155 RCU_INIT_POINTER(mld_vif->bigtks[keyidx - 6], NULL); 2156 2157 if (mld_sta && key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 2158 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 2159 key->cipher == WLAN_CIPHER_SUITE_GCMP || 2160 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 2161 struct iwl_mld_ptk_pn *ptk_pn; 2162 2163 if (WARN_ON(keyidx >= ARRAY_SIZE(mld_sta->ptk_pn))) 2164 return; 2165 2166 ptk_pn = wiphy_dereference(mld->wiphy, 2167 mld_sta->ptk_pn[keyidx]); 2168 RCU_INIT_POINTER(mld_sta->ptk_pn[keyidx], NULL); 2169 if (!WARN_ON(!ptk_pn)) 2170 kfree_rcu(ptk_pn, rcu_head); 2171 } 2172 2173 /* if this key was stored to be added later to the FW - free it here */ 2174 if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) 2175 iwl_mld_free_ap_early_key(mld, key, mld_vif); 2176 2177 /* We already removed it */ 2178 if (key->hw_key_idx == STA_KEY_IDX_INVALID) 2179 return; 2180 2181 IWL_DEBUG_MAC80211(mld, "disable hwcrypto key\n"); 2182 2183 iwl_mld_remove_key(mld, vif, sta, key); 2184 } 2185 2186 static int iwl_mld_mac80211_set_key(struct ieee80211_hw *hw, 2187 enum set_key_cmd cmd, 2188 struct ieee80211_vif *vif, 2189 struct ieee80211_sta *sta, 2190 struct ieee80211_key_conf *key) 2191 { 2192 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2193 int ret; 2194 2195 switch (cmd) { 2196 case SET_KEY: 2197 ret = iwl_mld_set_key_add(mld, vif, sta, key); 2198 if (ret) 2199 ret = -EOPNOTSUPP; 2200 break; 2201 case DISABLE_KEY: 2202 iwl_mld_set_key_remove(mld, vif, sta, key); 2203 ret = 0; 2204 break; 2205 default: 2206 ret = -EINVAL; 2207 break; 2208 } 2209 2210 return ret; 2211 } 2212 2213 static int 2214 iwl_mld_pre_channel_switch(struct ieee80211_hw *hw, 2215 struct ieee80211_vif *vif, 2216 struct ieee80211_channel_switch *chsw) 2217 { 2218 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2219 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2220 struct iwl_mld_link *mld_link = 2221 iwl_mld_link_dereference_check(mld_vif, chsw->link_id); 2222 u8 primary; 2223 int selected; 2224 2225 lockdep_assert_wiphy(mld->wiphy); 2226 2227 if (WARN_ON(!mld_link)) 2228 return -EINVAL; 2229 2230 IWL_DEBUG_MAC80211(mld, "pre CSA to freq %d\n", 2231 chsw->chandef.center_freq1); 2232 2233 if (!iwl_mld_emlsr_active(vif)) 2234 return 0; 2235 2236 primary = iwl_mld_get_primary_link(vif); 2237 2238 /* stay on the primary link unless it is undergoing a CSA with quiet */ 2239 if (chsw->link_id == primary && chsw->block_tx) 2240 selected = iwl_mld_get_other_link(vif, primary); 2241 else 2242 selected = primary; 2243 2244 /* Remember to tell the firmware that this link can't tx 2245 * Note that this logic seems to be unrelated to emlsr, but it 2246 * really is needed only when emlsr is active. When we have a 2247 * single link, the firmware will handle all this on its own. 2248 * In multi-link scenarios, we can learn about the CSA from 2249 * another link and this logic is too complex for the firmware 2250 * to track. 2251 * Since we want to de-activate the link that got a CSA with mode=1, 2252 * we need to tell the firmware not to send any frame on that link 2253 * as the firmware may not be aware that link is under a CSA 2254 * with mode=1 (no Tx allowed). 2255 */ 2256 mld_link->silent_deactivation = chsw->block_tx; 2257 iwl_mld_exit_emlsr(mld, vif, IWL_MLD_EMLSR_EXIT_CSA, selected); 2258 2259 return 0; 2260 } 2261 2262 static void 2263 iwl_mld_channel_switch(struct ieee80211_hw *hw, 2264 struct ieee80211_vif *vif, 2265 struct ieee80211_channel_switch *chsw) 2266 { 2267 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2268 2269 /* By implementing this operation, we prevent mac80211 from 2270 * starting its own channel switch timer, so that we can call 2271 * ieee80211_chswitch_done() ourselves at the right time 2272 * (Upon receiving the channel_switch_start notification from the fw) 2273 */ 2274 IWL_DEBUG_MAC80211(mld, 2275 "dummy channel switch op\n"); 2276 } 2277 2278 static int 2279 iwl_mld_post_channel_switch(struct ieee80211_hw *hw, 2280 struct ieee80211_vif *vif, 2281 struct ieee80211_bss_conf *link_conf) 2282 { 2283 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2284 struct iwl_mld_link *mld_link = iwl_mld_link_from_mac80211(link_conf); 2285 2286 lockdep_assert_wiphy(mld->wiphy); 2287 2288 WARN_ON(mld_link->silent_deactivation); 2289 2290 return 0; 2291 } 2292 2293 static void 2294 iwl_mld_abort_channel_switch(struct ieee80211_hw *hw, 2295 struct ieee80211_vif *vif, 2296 struct ieee80211_bss_conf *link_conf) 2297 { 2298 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2299 struct iwl_mld_link *mld_link = iwl_mld_link_from_mac80211(link_conf); 2300 2301 IWL_DEBUG_MAC80211(mld, 2302 "abort channel switch op\n"); 2303 mld_link->silent_deactivation = false; 2304 } 2305 2306 static int 2307 iwl_mld_switch_vif_chanctx_swap(struct ieee80211_hw *hw, 2308 struct ieee80211_vif_chanctx_switch *vifs) 2309 { 2310 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2311 int ret; 2312 2313 iwl_mld_unassign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2314 vifs[0].old_ctx); 2315 iwl_mld_remove_chanctx(hw, vifs[0].old_ctx); 2316 2317 ret = iwl_mld_add_chanctx(hw, vifs[0].new_ctx); 2318 if (ret) { 2319 IWL_ERR(mld, "failed to add new_ctx during channel switch\n"); 2320 goto out_reassign; 2321 } 2322 2323 ret = iwl_mld_assign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2324 vifs[0].new_ctx); 2325 if (ret) { 2326 IWL_ERR(mld, 2327 "failed to assign new_ctx during channel switch\n"); 2328 goto out_remove; 2329 } 2330 2331 return 0; 2332 2333 out_remove: 2334 iwl_mld_remove_chanctx(hw, vifs[0].new_ctx); 2335 out_reassign: 2336 if (iwl_mld_add_chanctx(hw, vifs[0].old_ctx)) { 2337 IWL_ERR(mld, "failed to add old_ctx after failure\n"); 2338 return ret; 2339 } 2340 2341 if (iwl_mld_assign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2342 vifs[0].old_ctx)) 2343 IWL_ERR(mld, "failed to reassign old_ctx after failure\n"); 2344 2345 return ret; 2346 } 2347 2348 static int 2349 iwl_mld_switch_vif_chanctx_reassign(struct ieee80211_hw *hw, 2350 struct ieee80211_vif_chanctx_switch *vifs) 2351 { 2352 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2353 int ret; 2354 2355 iwl_mld_unassign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2356 vifs[0].old_ctx); 2357 ret = iwl_mld_assign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2358 vifs[0].new_ctx); 2359 if (ret) { 2360 IWL_ERR(mld, 2361 "failed to assign new_ctx during channel switch\n"); 2362 goto out_reassign; 2363 } 2364 2365 return 0; 2366 2367 out_reassign: 2368 if (iwl_mld_assign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2369 vifs[0].old_ctx)) 2370 IWL_ERR(mld, "failed to reassign old_ctx after failure\n"); 2371 2372 return ret; 2373 } 2374 2375 static int 2376 iwl_mld_switch_vif_chanctx(struct ieee80211_hw *hw, 2377 struct ieee80211_vif_chanctx_switch *vifs, 2378 int n_vifs, 2379 enum ieee80211_chanctx_switch_mode mode) 2380 { 2381 int ret; 2382 2383 /* we only support a single-vif right now */ 2384 if (n_vifs > 1) 2385 return -EOPNOTSUPP; 2386 2387 switch (mode) { 2388 case CHANCTX_SWMODE_SWAP_CONTEXTS: 2389 ret = iwl_mld_switch_vif_chanctx_swap(hw, vifs); 2390 break; 2391 case CHANCTX_SWMODE_REASSIGN_VIF: 2392 ret = iwl_mld_switch_vif_chanctx_reassign(hw, vifs); 2393 break; 2394 default: 2395 ret = -EOPNOTSUPP; 2396 break; 2397 } 2398 2399 return ret; 2400 } 2401 2402 static void iwl_mld_sta_pre_rcu_remove(struct ieee80211_hw *hw, 2403 struct ieee80211_vif *vif, 2404 struct ieee80211_sta *sta) 2405 { 2406 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2407 struct iwl_mld_sta *mld_sta = iwl_mld_sta_from_mac80211(sta); 2408 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2409 struct iwl_mld_link_sta *mld_link_sta; 2410 u8 link_id; 2411 2412 lockdep_assert_wiphy(mld->wiphy); 2413 2414 /* This is called before mac80211 does RCU synchronisation, 2415 * so here we already invalidate our internal RCU-protected 2416 * station pointer. The rest of the code will thus no longer 2417 * be able to find the station this way, and we don't rely 2418 * on further RCU synchronisation after the sta_state() 2419 * callback deleted the station. 2420 */ 2421 for_each_mld_link_sta(mld_sta, mld_link_sta, link_id) 2422 RCU_INIT_POINTER(mld->fw_id_to_link_sta[mld_link_sta->fw_id], 2423 NULL); 2424 2425 if (sta == mld_vif->ap_sta) 2426 mld_vif->ap_sta = NULL; 2427 } 2428 2429 static void 2430 iwl_mld_mac80211_mgd_protect_tdls_discover(struct ieee80211_hw *hw, 2431 struct ieee80211_vif *vif, 2432 unsigned int link_id) 2433 { 2434 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2435 struct ieee80211_bss_conf *link_conf; 2436 u32 duration; 2437 int ret; 2438 2439 link_conf = wiphy_dereference(hw->wiphy, vif->link_conf[link_id]); 2440 if (WARN_ON_ONCE(!link_conf)) 2441 return; 2442 2443 /* Protect the session to hear the TDLS setup response on the channel */ 2444 2445 duration = 2 * link_conf->dtim_period * link_conf->beacon_int; 2446 2447 ret = iwl_mld_start_session_protection(mld, vif, duration, duration, 2448 link_id, HZ / 5); 2449 if (ret) 2450 IWL_ERR(mld, 2451 "Failed to start session protection for TDLS: %d\n", 2452 ret); 2453 } 2454 2455 static bool iwl_mld_can_activate_links(struct ieee80211_hw *hw, 2456 struct ieee80211_vif *vif, 2457 u16 desired_links) 2458 { 2459 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2460 int n_links = hweight16(desired_links); 2461 2462 /* Check if HW supports the wanted number of links */ 2463 return n_links <= iwl_mld_max_active_links(mld, vif); 2464 } 2465 2466 static int 2467 iwl_mld_change_vif_links(struct ieee80211_hw *hw, 2468 struct ieee80211_vif *vif, 2469 u16 old_links, u16 new_links, 2470 struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS]) 2471 { 2472 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2473 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2474 struct ieee80211_bss_conf *link_conf; 2475 u16 removed = old_links & ~new_links; 2476 u16 added = new_links & ~old_links; 2477 int err; 2478 2479 lockdep_assert_wiphy(mld->wiphy); 2480 2481 /* 2482 * No bits designate non-MLO mode. We can handle MLO exit/enter by 2483 * simply mapping that to link ID zero internally. 2484 * Note that mac80211 does such a non-MLO to MLO switch during restart 2485 * if it was in MLO before. In that case, we do not have a link to 2486 * remove. 2487 */ 2488 if (old_links == 0 && !mld->fw_status.in_hw_restart) 2489 removed |= BIT(0); 2490 2491 if (new_links == 0) 2492 added |= BIT(0); 2493 2494 for (int i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) { 2495 if (removed & BIT(i) && !WARN_ON(!old[i])) 2496 iwl_mld_remove_link(mld, old[i]); 2497 } 2498 2499 for (int i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) { 2500 if (added & BIT(i)) { 2501 link_conf = link_conf_dereference_protected(vif, i); 2502 if (!link_conf) { 2503 err = -EINVAL; 2504 goto remove_added_links; 2505 } 2506 2507 err = iwl_mld_add_link(mld, link_conf); 2508 if (err) 2509 goto remove_added_links; 2510 } 2511 } 2512 2513 /* 2514 * Ensure we always have a valid primary_link. When using multiple 2515 * links the proper value is set in assign_vif_chanctx. 2516 */ 2517 mld_vif->emlsr.primary = new_links ? __ffs(new_links) : 0; 2518 2519 /* 2520 * Special MLO restart case. We did not have a link when the interface 2521 * was added, so do the power configuration now. 2522 */ 2523 if (old_links == 0 && mld->fw_status.in_hw_restart) 2524 iwl_mld_update_mac_power(mld, vif, false); 2525 2526 return 0; 2527 2528 remove_added_links: 2529 for (int i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) { 2530 if (!(added & BIT(i))) 2531 continue; 2532 2533 link_conf = link_conf_dereference_protected(vif, i); 2534 if (!link_conf || !iwl_mld_link_from_mac80211(link_conf)) 2535 continue; 2536 2537 iwl_mld_remove_link(mld, link_conf); 2538 } 2539 2540 if (WARN_ON(!iwl_mld_error_before_recovery(mld))) 2541 return err; 2542 2543 /* reconfig will fix us anyway */ 2544 return 0; 2545 } 2546 2547 static int iwl_mld_change_sta_links(struct ieee80211_hw *hw, 2548 struct ieee80211_vif *vif, 2549 struct ieee80211_sta *sta, 2550 u16 old_links, u16 new_links) 2551 { 2552 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2553 2554 return iwl_mld_update_link_stas(mld, vif, sta, old_links, new_links); 2555 } 2556 2557 static int iwl_mld_mac80211_join_ibss(struct ieee80211_hw *hw, 2558 struct ieee80211_vif *vif) 2559 { 2560 return iwl_mld_start_ap_ibss(hw, vif, &vif->bss_conf); 2561 } 2562 2563 static void iwl_mld_mac80211_leave_ibss(struct ieee80211_hw *hw, 2564 struct ieee80211_vif *vif) 2565 { 2566 return iwl_mld_stop_ap_ibss(hw, vif, &vif->bss_conf); 2567 } 2568 2569 static int iwl_mld_mac80211_tx_last_beacon(struct ieee80211_hw *hw) 2570 { 2571 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2572 2573 return mld->ibss_manager; 2574 } 2575 2576 #define IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS_TIMEOUT (5 * HZ) 2577 2578 static void iwl_mld_vif_iter_emlsr_block_tmp_non_bss(void *_data, u8 *mac, 2579 struct ieee80211_vif *vif) 2580 { 2581 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2582 int ret; 2583 2584 if (!iwl_mld_vif_has_emlsr_cap(vif)) 2585 return; 2586 2587 ret = iwl_mld_block_emlsr_sync(mld_vif->mld, vif, 2588 IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS, 2589 iwl_mld_get_primary_link(vif)); 2590 if (ret) 2591 return; 2592 2593 wiphy_delayed_work_queue(mld_vif->mld->wiphy, 2594 &mld_vif->emlsr.tmp_non_bss_done_wk, 2595 IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS_TIMEOUT); 2596 } 2597 2598 static void iwl_mld_prep_add_interface(struct ieee80211_hw *hw, 2599 enum nl80211_iftype type) 2600 { 2601 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2602 2603 IWL_DEBUG_MAC80211(mld, "prep_add_interface: type=%u\n", type); 2604 2605 if (!(type == NL80211_IFTYPE_AP || 2606 type == NL80211_IFTYPE_P2P_GO || 2607 type == NL80211_IFTYPE_P2P_CLIENT)) 2608 return; 2609 2610 ieee80211_iterate_active_interfaces_mtx(mld->hw, 2611 IEEE80211_IFACE_ITER_NORMAL, 2612 iwl_mld_vif_iter_emlsr_block_tmp_non_bss, 2613 NULL); 2614 } 2615 2616 static int iwl_mld_set_hw_timestamp(struct ieee80211_hw *hw, 2617 struct ieee80211_vif *vif, 2618 struct cfg80211_set_hw_timestamp *hwts) 2619 { 2620 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2621 u32 protocols = 0; 2622 2623 /* HW timestamping is only supported for a specific station */ 2624 if (!hwts->macaddr) 2625 return -EOPNOTSUPP; 2626 2627 if (hwts->enable) 2628 protocols = 2629 IWL_TIME_SYNC_PROTOCOL_TM | IWL_TIME_SYNC_PROTOCOL_FTM; 2630 2631 return iwl_mld_time_sync_config(mld, hwts->macaddr, protocols); 2632 } 2633 2634 static int iwl_mld_start_pmsr(struct ieee80211_hw *hw, 2635 struct ieee80211_vif *vif, 2636 struct cfg80211_pmsr_request *request) 2637 { 2638 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2639 2640 return iwl_mld_ftm_start(mld, vif, request); 2641 } 2642 2643 const struct ieee80211_ops iwl_mld_hw_ops = { 2644 .tx = iwl_mld_mac80211_tx, 2645 .start = iwl_mld_mac80211_start, 2646 .stop = iwl_mld_mac80211_stop, 2647 .config = iwl_mld_mac80211_config, 2648 .add_interface = iwl_mld_mac80211_add_interface, 2649 .remove_interface = iwl_mld_mac80211_remove_interface, 2650 .conf_tx = iwl_mld_mac80211_conf_tx, 2651 .prepare_multicast = iwl_mld_mac80211_prepare_multicast, 2652 .configure_filter = iwl_mld_mac80211_configure_filter, 2653 .reconfig_complete = iwl_mld_mac80211_reconfig_complete, 2654 .wake_tx_queue = iwl_mld_mac80211_wake_tx_queue, 2655 .add_chanctx = iwl_mld_add_chanctx, 2656 .remove_chanctx = iwl_mld_remove_chanctx, 2657 .change_chanctx = iwl_mld_change_chanctx, 2658 .assign_vif_chanctx = iwl_mld_assign_vif_chanctx, 2659 .unassign_vif_chanctx = iwl_mld_unassign_vif_chanctx, 2660 .set_rts_threshold = iwl_mld_mac80211_set_rts_threshold, 2661 .link_info_changed = iwl_mld_mac80211_link_info_changed, 2662 .vif_cfg_changed = iwl_mld_mac80211_vif_cfg_changed, 2663 .set_key = iwl_mld_mac80211_set_key, 2664 .hw_scan = iwl_mld_mac80211_hw_scan, 2665 .cancel_hw_scan = iwl_mld_mac80211_cancel_hw_scan, 2666 .sched_scan_start = iwl_mld_mac80211_sched_scan_start, 2667 .sched_scan_stop = iwl_mld_mac80211_sched_scan_stop, 2668 .mgd_prepare_tx = iwl_mld_mac80211_mgd_prepare_tx, 2669 .mgd_complete_tx = iwl_mld_mac_mgd_complete_tx, 2670 .sta_state = iwl_mld_mac80211_sta_state, 2671 .sta_statistics = iwl_mld_mac80211_sta_statistics, 2672 .flush = iwl_mld_mac80211_flush, 2673 .flush_sta = iwl_mld_mac80211_flush_sta, 2674 .ampdu_action = iwl_mld_mac80211_ampdu_action, 2675 .can_aggregate_in_amsdu = iwl_mld_mac80211_can_aggregate, 2676 .sync_rx_queues = iwl_mld_mac80211_sync_rx_queues, 2677 .link_sta_rc_update = iwl_mld_sta_rc_update, 2678 .start_ap = iwl_mld_start_ap_ibss, 2679 .stop_ap = iwl_mld_stop_ap_ibss, 2680 .pre_channel_switch = iwl_mld_pre_channel_switch, 2681 .channel_switch = iwl_mld_channel_switch, 2682 .post_channel_switch = iwl_mld_post_channel_switch, 2683 .abort_channel_switch = iwl_mld_abort_channel_switch, 2684 .switch_vif_chanctx = iwl_mld_switch_vif_chanctx, 2685 .sta_pre_rcu_remove = iwl_mld_sta_pre_rcu_remove, 2686 .remain_on_channel = iwl_mld_start_roc, 2687 .cancel_remain_on_channel = iwl_mld_cancel_roc, 2688 .can_activate_links = iwl_mld_can_activate_links, 2689 .change_vif_links = iwl_mld_change_vif_links, 2690 .change_sta_links = iwl_mld_change_sta_links, 2691 #ifdef CONFIG_PM_SLEEP 2692 .suspend = iwl_mld_suspend, 2693 .resume = iwl_mld_resume, 2694 .set_wakeup = iwl_mld_set_wakeup, 2695 .set_rekey_data = iwl_mld_set_rekey_data, 2696 #if IS_ENABLED(CONFIG_IPV6) 2697 .ipv6_addr_change = iwl_mld_ipv6_addr_change, 2698 #endif /* IS_ENABLED(CONFIG_IPV6) */ 2699 #endif /* CONFIG_PM_SLEEP */ 2700 #ifdef CONFIG_IWLWIFI_DEBUGFS 2701 .vif_add_debugfs = iwl_mld_add_vif_debugfs, 2702 .link_add_debugfs = iwl_mld_add_link_debugfs, 2703 .link_sta_add_debugfs = iwl_mld_add_link_sta_debugfs, 2704 #endif 2705 .mgd_protect_tdls_discover = iwl_mld_mac80211_mgd_protect_tdls_discover, 2706 .join_ibss = iwl_mld_mac80211_join_ibss, 2707 .leave_ibss = iwl_mld_mac80211_leave_ibss, 2708 .tx_last_beacon = iwl_mld_mac80211_tx_last_beacon, 2709 .prep_add_interface = iwl_mld_prep_add_interface, 2710 .set_hw_timestamp = iwl_mld_set_hw_timestamp, 2711 .start_pmsr = iwl_mld_start_pmsr, 2712 }; 2713