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, DISALLOW_PUNCTURING_5GHZ); 247 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS); 248 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU); 249 ieee80211_hw_set(hw, TDLS_WIDER_BW); 250 } 251 252 static void iwl_mac_hw_set_wiphy(struct iwl_mld *mld) 253 { 254 struct ieee80211_hw *hw = mld->hw; 255 struct wiphy *wiphy = hw->wiphy; 256 const struct iwl_ucode_capabilities *ucode_capa = &mld->fw->ucode_capa; 257 258 snprintf(wiphy->fw_version, 259 sizeof(wiphy->fw_version), 260 "%.31s", mld->fw->fw_version); 261 262 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 263 BIT(NL80211_IFTYPE_P2P_CLIENT) | 264 BIT(NL80211_IFTYPE_AP) | 265 BIT(NL80211_IFTYPE_P2P_GO) | 266 BIT(NL80211_IFTYPE_P2P_DEVICE) | 267 BIT(NL80211_IFTYPE_ADHOC); 268 269 wiphy->features |= NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR | 270 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR | 271 NL80211_FEATURE_ND_RANDOM_MAC_ADDR | 272 NL80211_FEATURE_HT_IBSS | 273 NL80211_FEATURE_P2P_GO_CTWIN | 274 NL80211_FEATURE_LOW_PRIORITY_SCAN | 275 NL80211_FEATURE_P2P_GO_OPPPS | 276 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | 277 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION | 278 NL80211_FEATURE_TX_POWER_INSERTION | 279 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES; 280 281 wiphy->flags |= WIPHY_FLAG_IBSS_RSN | 282 WIPHY_FLAG_AP_UAPSD | 283 WIPHY_FLAG_HAS_CHANNEL_SWITCH | 284 WIPHY_FLAG_SPLIT_SCAN_6GHZ | 285 WIPHY_FLAG_SUPPORTS_TDLS | 286 WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK; 287 288 if (mld->nvm_data->sku_cap_11be_enable && 289 !iwlwifi_mod_params.disable_11ax && 290 !iwlwifi_mod_params.disable_11be) 291 wiphy->flags |= WIPHY_FLAG_SUPPORTS_MLO; 292 293 /* the firmware uses u8 for num of iterations, but 0xff is saved for 294 * infinite loop, so the maximum number of iterations is actually 254. 295 */ 296 wiphy->max_sched_scan_plan_iterations = 254; 297 wiphy->max_sched_scan_ie_len = iwl_mld_scan_max_template_size(); 298 wiphy->max_scan_ie_len = iwl_mld_scan_max_template_size(); 299 wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX; 300 wiphy->max_scan_ssids = PROBE_OPTION_MAX; 301 wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS; 302 wiphy->max_sched_scan_reqs = 1; 303 wiphy->max_sched_scan_plan_interval = U16_MAX; 304 wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES_V2; 305 306 wiphy->max_remain_on_channel_duration = 10000; 307 308 wiphy->hw_version = mld->trans->hw_id; 309 310 wiphy->hw_timestamp_max_peers = 1; 311 312 wiphy->iface_combinations = iwl_mld_iface_combinations; 313 wiphy->n_iface_combinations = ARRAY_SIZE(iwl_mld_iface_combinations); 314 315 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_VHT_IBSS); 316 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_DFS_CONCURRENT); 317 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_LEGACY); 318 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_SCAN_START_TIME); 319 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BSS_PARENT_TSF); 320 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT); 321 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP); 322 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME); 323 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE); 324 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER); 325 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_SPP_AMSDU_SUPPORT); 326 327 if (fw_has_capa(ucode_capa, IWL_UCODE_TLV_CAPA_PROTECTED_TWT)) 328 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_PROTECTED_TWT); 329 330 wiphy->iftype_ext_capab = NULL; 331 wiphy->num_iftype_ext_capab = 0; 332 333 if (!iwlwifi_mod_params.disable_11ax) { 334 wiphy->iftype_ext_capab = iftypes_ext_capa; 335 wiphy->num_iftype_ext_capab = ARRAY_SIZE(iftypes_ext_capa); 336 337 ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID); 338 ieee80211_hw_set(hw, SUPPORTS_ONLY_HE_MULTI_BSSID); 339 } 340 341 if (iwlmld_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 342 wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; 343 else 344 wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; 345 } 346 347 static void iwl_mac_hw_set_misc(struct iwl_mld *mld) 348 { 349 struct ieee80211_hw *hw = mld->hw; 350 351 hw->queues = IEEE80211_NUM_ACS; 352 353 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG; 354 hw->netdev_features |= mld->cfg->features; 355 356 hw->max_tx_fragments = mld->trans->max_skb_frags; 357 hw->max_listen_interval = IWL_MLD_CONN_LISTEN_INTERVAL; 358 359 hw->uapsd_max_sp_len = IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL; 360 hw->uapsd_queues = IEEE80211_WMM_IE_STA_QOSINFO_AC_VO | 361 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI | 362 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK | 363 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE; 364 365 hw->chanctx_data_size = sizeof(struct iwl_mld_phy); 366 hw->vif_data_size = sizeof(struct iwl_mld_vif); 367 hw->sta_data_size = sizeof(struct iwl_mld_sta); 368 hw->txq_data_size = sizeof(struct iwl_mld_txq); 369 370 /* TODO: Remove this division when IEEE80211_MAX_AMPDU_BUF_EHT size 371 * is supported. 372 * Note: ensure that IWL_DEFAULT_QUEUE_SIZE_EHT is updated accordingly. 373 */ 374 hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_EHT / 2; 375 } 376 377 static int iwl_mld_hw_verify_preconditions(struct iwl_mld *mld) 378 { 379 /* 11ax is expected to be enabled for all supported devices */ 380 if (WARN_ON(!mld->nvm_data->sku_cap_11ax_enable)) 381 return -EINVAL; 382 383 /* LAR is expected to be enabled for all supported devices */ 384 if (WARN_ON(!mld->nvm_data->lar_enabled)) 385 return -EINVAL; 386 387 /* All supported devices are currently using version 3 of the cmd. 388 * Since version 3, IWL_SCAN_MAX_PROFILES_V2 shall be used where 389 * necessary. 390 */ 391 if (WARN_ON(iwl_fw_lookup_cmd_ver(mld->fw, 392 SCAN_OFFLOAD_UPDATE_PROFILES_CMD, 393 IWL_FW_CMD_VER_UNKNOWN) != 3)) 394 return -EINVAL; 395 396 return 0; 397 } 398 399 int iwl_mld_register_hw(struct iwl_mld *mld) 400 { 401 /* verify once essential preconditions required for setting 402 * the hw capabilities 403 */ 404 if (iwl_mld_hw_verify_preconditions(mld)) 405 return -EINVAL; 406 407 iwl_mld_hw_set_addresses(mld); 408 iwl_mld_hw_set_channels(mld); 409 iwl_mld_hw_set_security(mld); 410 iwl_mld_hw_set_pm(mld); 411 iwl_mld_hw_set_antennas(mld); 412 iwl_mac_hw_set_radiotap(mld); 413 iwl_mac_hw_set_flags(mld); 414 iwl_mac_hw_set_wiphy(mld); 415 iwl_mac_hw_set_misc(mld); 416 417 SET_IEEE80211_DEV(mld->hw, mld->trans->dev); 418 419 return ieee80211_register_hw(mld->hw); 420 } 421 422 static void 423 iwl_mld_mac80211_tx(struct ieee80211_hw *hw, 424 struct ieee80211_tx_control *control, struct sk_buff *skb) 425 { 426 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 427 struct ieee80211_sta *sta = control->sta; 428 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 429 struct ieee80211_hdr *hdr = (void *)skb->data; 430 u32 link_id = u32_get_bits(info->control.flags, 431 IEEE80211_TX_CTRL_MLO_LINK); 432 433 /* In AP mode, mgmt frames are sent on the bcast station, 434 * so the FW can't translate the MLD addr to the link addr. Do it here 435 */ 436 if (ieee80211_is_mgmt(hdr->frame_control) && sta && 437 link_id != IEEE80211_LINK_UNSPECIFIED && 438 !ieee80211_is_probe_resp(hdr->frame_control)) { 439 /* translate MLD addresses to LINK addresses */ 440 struct ieee80211_link_sta *link_sta = 441 rcu_dereference(sta->link[link_id]); 442 struct ieee80211_bss_conf *link_conf = 443 rcu_dereference(info->control.vif->link_conf[link_id]); 444 struct ieee80211_mgmt *mgmt; 445 446 if (WARN_ON(!link_sta || !link_conf)) { 447 ieee80211_free_txskb(hw, skb); 448 return; 449 } 450 451 mgmt = (void *)hdr; 452 memcpy(mgmt->da, link_sta->addr, ETH_ALEN); 453 memcpy(mgmt->sa, link_conf->addr, ETH_ALEN); 454 memcpy(mgmt->bssid, link_conf->bssid, ETH_ALEN); 455 } 456 457 iwl_mld_tx_skb(mld, skb, NULL); 458 } 459 460 static void 461 iwl_mld_restart_cleanup(struct iwl_mld *mld) 462 { 463 iwl_cleanup_mld(mld); 464 465 ieee80211_iterate_interfaces(mld->hw, IEEE80211_IFACE_ITER_ACTIVE, 466 iwl_mld_cleanup_vif, NULL); 467 468 ieee80211_iterate_stations_atomic(mld->hw, 469 iwl_mld_cleanup_sta, NULL); 470 471 iwl_mld_ftm_restart_cleanup(mld); 472 } 473 474 static 475 int iwl_mld_mac80211_start(struct ieee80211_hw *hw) 476 { 477 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 478 int ret; 479 bool in_d3 = false; 480 481 lockdep_assert_wiphy(mld->wiphy); 482 483 #ifdef CONFIG_PM_SLEEP 484 /* Unless the host goes into hibernate the FW always stays on and 485 * the d3_resume flow is used. When wowlan is configured, mac80211 486 * would call it's resume callback and the wowlan_resume flow 487 * would be used. 488 */ 489 490 in_d3 = mld->fw_status.in_d3; 491 if (in_d3) { 492 /* mac80211 already cleaned up the state, no need for cleanup */ 493 ret = iwl_mld_no_wowlan_resume(mld); 494 if (ret) 495 iwl_mld_stop_fw(mld); 496 } 497 #endif /* CONFIG_PM_SLEEP */ 498 499 if (mld->fw_status.in_hw_restart) { 500 iwl_mld_stop_fw(mld); 501 iwl_mld_restart_cleanup(mld); 502 } 503 504 if (!in_d3 || ret) { 505 ret = iwl_mld_start_fw(mld); 506 if (ret) 507 goto error; 508 } 509 510 mld->scan.last_start_time_jiffies = jiffies; 511 512 iwl_dbg_tlv_time_point(&mld->fwrt, IWL_FW_INI_TIME_POINT_POST_INIT, 513 NULL); 514 iwl_dbg_tlv_time_point(&mld->fwrt, IWL_FW_INI_TIME_POINT_PERIODIC, 515 NULL); 516 517 return 0; 518 519 error: 520 /* If we failed to restart the hw, there is nothing useful 521 * we can do but indicate we are no longer in restart. 522 */ 523 mld->fw_status.in_hw_restart = false; 524 525 return ret; 526 } 527 528 static 529 void iwl_mld_mac80211_stop(struct ieee80211_hw *hw, bool suspend) 530 { 531 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 532 533 lockdep_assert_wiphy(mld->wiphy); 534 535 wiphy_work_cancel(mld->wiphy, &mld->add_txqs_wk); 536 537 /* if the suspend flow fails the fw is in error. Stop it here, and it 538 * will be started upon wakeup 539 */ 540 if (!suspend || iwl_mld_no_wowlan_suspend(mld)) 541 iwl_mld_stop_fw(mld); 542 543 /* HW is stopped, no more coming RX. OTOH, the worker can't run as the 544 * wiphy lock is held. Cancel it in case it was scheduled just before 545 * we stopped the HW. 546 */ 547 wiphy_work_cancel(mld->wiphy, &mld->async_handlers_wk); 548 549 /* Empty out the list, as the worker won't do that */ 550 iwl_mld_purge_async_handlers_list(mld); 551 552 /* Clear in_hw_restart flag when stopping the hw, as mac80211 won't 553 * execute the restart. 554 */ 555 mld->fw_status.in_hw_restart = false; 556 557 /* We shouldn't have any UIDs still set. Loop over all the UIDs to 558 * make sure there's nothing left there and warn if any is found. 559 */ 560 for (int i = 0; i < ARRAY_SIZE(mld->scan.uid_status); i++) 561 if (WARN_ONCE(mld->scan.uid_status[i], 562 "UMAC scan UID %d status was not cleaned (0x%x 0x%x)\n", 563 i, mld->scan.uid_status[i], mld->scan.status)) 564 mld->scan.uid_status[i] = 0; 565 } 566 567 static 568 int iwl_mld_mac80211_config(struct ieee80211_hw *hw, u32 changed) 569 { 570 return 0; 571 } 572 573 static 574 int iwl_mld_mac80211_add_interface(struct ieee80211_hw *hw, 575 struct ieee80211_vif *vif) 576 { 577 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 578 int ret; 579 580 lockdep_assert_wiphy(mld->wiphy); 581 582 /* Construct mld_vif, add it to fw, and map its ID to ieee80211_vif */ 583 ret = iwl_mld_add_vif(mld, vif); 584 if (ret) 585 return ret; 586 587 /* 588 * Add the default link, but not if this is an MLD vif as that implies 589 * the HW is restarting and it will be configured by change_vif_links. 590 */ 591 if (!ieee80211_vif_is_mld(vif)) 592 ret = iwl_mld_add_link(mld, &vif->bss_conf); 593 if (ret) 594 goto err; 595 596 if (vif->type == NL80211_IFTYPE_STATION) { 597 vif->driver_flags |= IEEE80211_VIF_REMOVE_AP_AFTER_DISASSOC; 598 if (!vif->p2p) 599 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 600 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 601 } 602 603 if (vif->p2p || iwl_fw_lookup_cmd_ver(mld->fw, PHY_CONTEXT_CMD, 0) < 5) 604 vif->driver_flags |= IEEE80211_VIF_IGNORE_OFDMA_WIDER_BW; 605 606 /* 607 * For an MLD vif (in restart) we may not have a link; delay the call 608 * the initial change_vif_links. 609 */ 610 if (vif->type == NL80211_IFTYPE_STATION && 611 !ieee80211_vif_is_mld(vif)) 612 iwl_mld_update_mac_power(mld, vif, false); 613 614 if (vif->type == NL80211_IFTYPE_MONITOR) { 615 mld->monitor.on = true; 616 ieee80211_hw_set(mld->hw, RX_INCLUDES_FCS); 617 } 618 619 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 620 mld->p2p_device_vif = vif; 621 622 return 0; 623 624 err: 625 iwl_mld_rm_vif(mld, vif); 626 return ret; 627 } 628 629 static 630 void iwl_mld_mac80211_remove_interface(struct ieee80211_hw *hw, 631 struct ieee80211_vif *vif) 632 { 633 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 634 635 lockdep_assert_wiphy(mld->wiphy); 636 637 if (ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_STATION) 638 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 639 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 640 641 if (vif->type == NL80211_IFTYPE_MONITOR) { 642 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mld->hw->flags); 643 mld->monitor.on = false; 644 } 645 646 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 647 mld->p2p_device_vif = NULL; 648 649 iwl_mld_remove_link(mld, &vif->bss_conf); 650 651 #ifdef CONFIG_IWLWIFI_DEBUGFS 652 debugfs_remove(iwl_mld_vif_from_mac80211(vif)->dbgfs_slink); 653 #endif 654 655 iwl_mld_rm_vif(mld, vif); 656 } 657 658 struct iwl_mld_mc_iter_data { 659 struct iwl_mld *mld; 660 int port_id; 661 }; 662 663 static void iwl_mld_mc_iface_iterator(void *data, u8 *mac, 664 struct ieee80211_vif *vif) 665 { 666 struct iwl_mld_mc_iter_data *mc_data = data; 667 struct iwl_mld *mld = mc_data->mld; 668 struct iwl_mcast_filter_cmd *cmd = mld->mcast_filter_cmd; 669 struct iwl_host_cmd hcmd = { 670 .id = MCAST_FILTER_CMD, 671 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 672 }; 673 int ret, len; 674 675 /* If we don't have free ports, mcast frames will be dropped */ 676 if (WARN_ON_ONCE(mc_data->port_id >= MAX_PORT_ID_NUM)) 677 return; 678 679 if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc) 680 return; 681 682 cmd->port_id = mc_data->port_id++; 683 ether_addr_copy(cmd->bssid, vif->bss_conf.bssid); 684 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4); 685 686 hcmd.len[0] = len; 687 hcmd.data[0] = cmd; 688 689 ret = iwl_mld_send_cmd(mld, &hcmd); 690 if (ret) 691 IWL_ERR(mld, "mcast filter cmd error. ret=%d\n", ret); 692 } 693 694 void iwl_mld_recalc_multicast_filter(struct iwl_mld *mld) 695 { 696 struct iwl_mld_mc_iter_data iter_data = { 697 .mld = mld, 698 }; 699 700 if (WARN_ON_ONCE(!mld->mcast_filter_cmd)) 701 return; 702 703 ieee80211_iterate_active_interfaces(mld->hw, 704 IEEE80211_IFACE_ITER_NORMAL, 705 iwl_mld_mc_iface_iterator, 706 &iter_data); 707 } 708 709 static u64 710 iwl_mld_mac80211_prepare_multicast(struct ieee80211_hw *hw, 711 struct netdev_hw_addr_list *mc_list) 712 { 713 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 714 struct iwl_mcast_filter_cmd *cmd; 715 struct netdev_hw_addr *addr; 716 int addr_count = netdev_hw_addr_list_count(mc_list); 717 bool pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES; 718 int len; 719 720 if (pass_all) 721 addr_count = 0; 722 723 /* len must be a multiple of 4 */ 724 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4); 725 cmd = kzalloc(len, GFP_ATOMIC); 726 if (!cmd) 727 return 0; 728 729 if (pass_all) { 730 cmd->pass_all = 1; 731 goto out; 732 } 733 734 netdev_hw_addr_list_for_each(addr, mc_list) { 735 IWL_DEBUG_MAC80211(mld, "mcast addr (%d): %pM\n", 736 cmd->count, addr->addr); 737 ether_addr_copy(&cmd->addr_list[cmd->count * ETH_ALEN], 738 addr->addr); 739 cmd->count++; 740 } 741 742 out: 743 return (u64)(unsigned long)cmd; 744 } 745 746 static 747 void iwl_mld_mac80211_configure_filter(struct ieee80211_hw *hw, 748 unsigned int changed_flags, 749 unsigned int *total_flags, 750 u64 multicast) 751 { 752 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 753 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast; 754 755 /* Replace previous configuration */ 756 kfree(mld->mcast_filter_cmd); 757 mld->mcast_filter_cmd = cmd; 758 759 if (!cmd) 760 goto out; 761 762 if (changed_flags & FIF_ALLMULTI) 763 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI); 764 765 if (cmd->pass_all) 766 cmd->count = 0; 767 768 iwl_mld_recalc_multicast_filter(mld); 769 out: 770 *total_flags = 0; 771 } 772 773 static 774 void iwl_mld_mac80211_wake_tx_queue(struct ieee80211_hw *hw, 775 struct ieee80211_txq *txq) 776 { 777 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 778 struct iwl_mld_txq *mld_txq = iwl_mld_txq_from_mac80211(txq); 779 780 if (likely(mld_txq->status.allocated) || !txq->sta) { 781 iwl_mld_tx_from_txq(mld, txq); 782 return; 783 } 784 785 /* We don't support TSPEC tids. %IEEE80211_NUM_TIDS is for mgmt */ 786 if (txq->tid != IEEE80211_NUM_TIDS && txq->tid >= IWL_MAX_TID_COUNT) { 787 IWL_DEBUG_MAC80211(mld, "TID %d is not supported\n", txq->tid); 788 return; 789 } 790 791 /* The worker will handle any packets we leave on the txq now */ 792 793 spin_lock_bh(&mld->add_txqs_lock); 794 /* The list is being deleted only after the queue is fully allocated. */ 795 if (list_empty(&mld_txq->list) && 796 /* recheck under lock, otherwise it can be added twice */ 797 !mld_txq->status.allocated) { 798 list_add_tail(&mld_txq->list, &mld->txqs_to_add); 799 wiphy_work_queue(mld->wiphy, &mld->add_txqs_wk); 800 } 801 spin_unlock_bh(&mld->add_txqs_lock); 802 } 803 804 static void iwl_mld_teardown_tdls_peers(struct iwl_mld *mld) 805 { 806 lockdep_assert_wiphy(mld->wiphy); 807 808 for (int i = 0; i < mld->fw->ucode_capa.num_stations; i++) { 809 struct ieee80211_link_sta *link_sta; 810 struct iwl_mld_sta *mld_sta; 811 812 link_sta = wiphy_dereference(mld->wiphy, 813 mld->fw_id_to_link_sta[i]); 814 if (IS_ERR_OR_NULL(link_sta)) 815 continue; 816 817 if (!link_sta->sta->tdls) 818 continue; 819 820 mld_sta = iwl_mld_sta_from_mac80211(link_sta->sta); 821 822 ieee80211_tdls_oper_request(mld_sta->vif, link_sta->addr, 823 NL80211_TDLS_TEARDOWN, 824 WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED, 825 GFP_KERNEL); 826 } 827 } 828 829 static 830 int iwl_mld_add_chanctx(struct ieee80211_hw *hw, 831 struct ieee80211_chanctx_conf *ctx) 832 { 833 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 834 struct iwl_mld_phy *phy = iwl_mld_phy_from_mac80211(ctx); 835 int fw_id = iwl_mld_allocate_fw_phy_id(mld); 836 int ret; 837 838 if (fw_id < 0) 839 return fw_id; 840 841 phy->mld = mld; 842 phy->fw_id = fw_id; 843 phy->chandef = *iwl_mld_get_chandef_from_chanctx(mld, ctx); 844 845 ret = iwl_mld_phy_fw_action(mld, ctx, FW_CTXT_ACTION_ADD); 846 if (ret) { 847 mld->used_phy_ids &= ~BIT(phy->fw_id); 848 return ret; 849 } 850 851 if (hweight8(mld->used_phy_ids) > 1) 852 iwl_mld_teardown_tdls_peers(mld); 853 854 return 0; 855 } 856 857 static 858 void iwl_mld_remove_chanctx(struct ieee80211_hw *hw, 859 struct ieee80211_chanctx_conf *ctx) 860 { 861 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 862 struct iwl_mld_phy *phy = iwl_mld_phy_from_mac80211(ctx); 863 864 iwl_mld_phy_fw_action(mld, ctx, FW_CTXT_ACTION_REMOVE); 865 mld->used_phy_ids &= ~BIT(phy->fw_id); 866 } 867 868 static 869 void iwl_mld_change_chanctx(struct ieee80211_hw *hw, 870 struct ieee80211_chanctx_conf *ctx, u32 changed) 871 { 872 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 873 struct iwl_mld_phy *phy = iwl_mld_phy_from_mac80211(ctx); 874 struct cfg80211_chan_def *chandef = 875 iwl_mld_get_chandef_from_chanctx(mld, ctx); 876 877 /* We don't care about these */ 878 if (!(changed & ~(IEEE80211_CHANCTX_CHANGE_RX_CHAINS | 879 IEEE80211_CHANCTX_CHANGE_RADAR | 880 IEEE80211_CHANCTX_CHANGE_CHANNEL))) 881 return; 882 883 /* Check if a FW update is required */ 884 885 if (changed & IEEE80211_CHANCTX_CHANGE_AP) 886 goto update; 887 888 if (chandef->chan == phy->chandef.chan && 889 chandef->center_freq1 == phy->chandef.center_freq1 && 890 chandef->punctured == phy->chandef.punctured) { 891 /* Check if we are toggling between HT and non-HT, no-op */ 892 if (phy->chandef.width == chandef->width || 893 (phy->chandef.width <= NL80211_CHAN_WIDTH_20 && 894 chandef->width <= NL80211_CHAN_WIDTH_20)) 895 return; 896 } 897 update: 898 phy->chandef = *chandef; 899 900 iwl_mld_phy_fw_action(mld, ctx, FW_CTXT_ACTION_MODIFY); 901 } 902 903 static u8 904 iwl_mld_chandef_get_primary_80(struct cfg80211_chan_def *chandef) 905 { 906 int data_start; 907 int control_start; 908 int bw; 909 910 if (chandef->width == NL80211_CHAN_WIDTH_320) 911 bw = 320; 912 else if (chandef->width == NL80211_CHAN_WIDTH_160) 913 bw = 160; 914 else 915 return 0; 916 917 /* data is bw wide so the start is half the width */ 918 data_start = chandef->center_freq1 - bw / 2; 919 /* control is 20Mhz width */ 920 control_start = chandef->chan->center_freq - 10; 921 922 return (control_start - data_start) / 80; 923 } 924 925 static bool iwl_mld_can_activate_link(struct iwl_mld *mld, 926 struct ieee80211_vif *vif, 927 struct ieee80211_bss_conf *link) 928 { 929 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 930 struct iwl_mld_sta *mld_sta; 931 struct iwl_mld_link_sta *link_sta; 932 933 /* In association, we activate the assoc link before adding the STA. */ 934 if (!mld_vif->ap_sta || !vif->cfg.assoc) 935 return true; 936 937 mld_sta = iwl_mld_sta_from_mac80211(mld_vif->ap_sta); 938 939 /* When switching links, we need to wait with the activation until the 940 * STA was added to the FW. It'll be activated in 941 * iwl_mld_update_link_stas 942 */ 943 link_sta = wiphy_dereference(mld->wiphy, mld_sta->link[link->link_id]); 944 945 /* In restart we can have a link_sta that doesn't exist in FW yet */ 946 return link_sta && link_sta->in_fw; 947 } 948 949 static 950 int iwl_mld_assign_vif_chanctx(struct ieee80211_hw *hw, 951 struct ieee80211_vif *vif, 952 struct ieee80211_bss_conf *link, 953 struct ieee80211_chanctx_conf *ctx) 954 { 955 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 956 struct iwl_mld_link *mld_link = iwl_mld_link_from_mac80211(link); 957 unsigned int n_active = iwl_mld_count_active_links(mld, vif); 958 int ret; 959 960 lockdep_assert_wiphy(mld->wiphy); 961 962 if (WARN_ON(!mld_link)) 963 return -EINVAL; 964 965 /* if the assigned one was not counted yet, count it now */ 966 if (!rcu_access_pointer(mld_link->chan_ctx)) { 967 n_active++; 968 969 /* Track addition of non-BSS link */ 970 if (ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_STATION) { 971 ret = iwl_mld_emlsr_check_non_bss_block(mld, 1); 972 if (ret) 973 return ret; 974 } 975 } 976 977 /* for AP, mac parameters such as HE support are updated at this stage. */ 978 if (vif->type == NL80211_IFTYPE_AP) { 979 ret = iwl_mld_mac_fw_action(mld, vif, FW_CTXT_ACTION_MODIFY); 980 981 if (ret) { 982 IWL_ERR(mld, "failed to update MAC %pM\n", vif->addr); 983 return -EINVAL; 984 } 985 } 986 987 rcu_assign_pointer(mld_link->chan_ctx, ctx); 988 989 if (n_active > 1) { 990 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 991 992 iwl_mld_leave_omi_bw_reduction(mld); 993 994 /* Indicate to mac80211 that EML is enabled */ 995 vif->driver_flags |= IEEE80211_VIF_EML_ACTIVE; 996 997 if (vif->active_links & BIT(mld_vif->emlsr.selected_links)) 998 mld_vif->emlsr.primary = mld_vif->emlsr.selected_primary; 999 else 1000 mld_vif->emlsr.primary = __ffs(vif->active_links); 1001 1002 iwl_dbg_tlv_time_point(&mld->fwrt, IWL_FW_INI_TIME_ESR_LINK_UP, 1003 NULL); 1004 } 1005 1006 /* First send the link command with the phy context ID. 1007 * Now that we have the phy, we know the band so also the rates 1008 */ 1009 ret = iwl_mld_change_link_in_fw(mld, link, 1010 LINK_CONTEXT_MODIFY_RATES_INFO); 1011 if (ret) 1012 goto err; 1013 1014 /* TODO: Initialize rate control for the AP station, since we might be 1015 * doing a link switch here - we cannot initialize it before since 1016 * this needs the phy context assigned (and in FW?), and we cannot 1017 * do it later because it needs to be initialized as soon as we're 1018 * able to TX on the link, i.e. when active. (task=link-switch) 1019 */ 1020 1021 /* Now activate the link */ 1022 if (iwl_mld_can_activate_link(mld, vif, link)) { 1023 ret = iwl_mld_activate_link(mld, link); 1024 if (ret) 1025 goto err; 1026 } 1027 1028 if (vif->type == NL80211_IFTYPE_STATION) 1029 iwl_mld_send_ap_tx_power_constraint_cmd(mld, vif, link); 1030 1031 if (vif->type == NL80211_IFTYPE_MONITOR) { 1032 /* TODO: task=sniffer add sniffer station */ 1033 mld->monitor.p80 = 1034 iwl_mld_chandef_get_primary_80(&vif->bss_conf.chanreq.oper); 1035 } 1036 1037 return 0; 1038 err: 1039 RCU_INIT_POINTER(mld_link->chan_ctx, NULL); 1040 return ret; 1041 } 1042 1043 static 1044 void iwl_mld_unassign_vif_chanctx(struct ieee80211_hw *hw, 1045 struct ieee80211_vif *vif, 1046 struct ieee80211_bss_conf *link, 1047 struct ieee80211_chanctx_conf *ctx) 1048 { 1049 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1050 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1051 struct iwl_mld_link *mld_link = iwl_mld_link_from_mac80211(link); 1052 unsigned int n_active = iwl_mld_count_active_links(mld, vif); 1053 1054 if (WARN_ON(!mld_link)) 1055 return; 1056 1057 /* Track removal of non-BSS link */ 1058 if (ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_STATION) 1059 iwl_mld_emlsr_check_non_bss_block(mld, -1); 1060 1061 iwl_mld_deactivate_link(mld, link); 1062 1063 /* TODO: task=sniffer remove sniffer station */ 1064 1065 if (n_active > 1) { 1066 /* Indicate to mac80211 that EML is disabled */ 1067 vif->driver_flags &= ~IEEE80211_VIF_EML_ACTIVE; 1068 1069 iwl_dbg_tlv_time_point(&mld->fwrt, 1070 IWL_FW_INI_TIME_ESR_LINK_DOWN, 1071 NULL); 1072 } 1073 1074 RCU_INIT_POINTER(mld_link->chan_ctx, NULL); 1075 1076 /* in the non-MLO case, remove/re-add the link to clean up FW state. 1077 * In MLO, it'll be done in drv_change_vif_link 1078 */ 1079 if (!ieee80211_vif_is_mld(vif) && !mld_vif->ap_sta && 1080 !WARN_ON_ONCE(vif->cfg.assoc) && 1081 vif->type != NL80211_IFTYPE_AP && !mld->fw_status.in_hw_restart) { 1082 iwl_mld_remove_link(mld, link); 1083 iwl_mld_add_link(mld, link); 1084 } 1085 } 1086 1087 static 1088 int iwl_mld_mac80211_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 1089 { 1090 return 0; 1091 } 1092 1093 static void 1094 iwl_mld_link_info_changed_ap_ibss(struct iwl_mld *mld, 1095 struct ieee80211_vif *vif, 1096 struct ieee80211_bss_conf *link, 1097 u64 changes) 1098 { 1099 u32 link_changes = 0; 1100 1101 if (changes & BSS_CHANGED_ERP_SLOT) 1102 link_changes |= LINK_CONTEXT_MODIFY_RATES_INFO; 1103 1104 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT)) 1105 link_changes |= LINK_CONTEXT_MODIFY_PROTECT_FLAGS; 1106 1107 if (changes & (BSS_CHANGED_QOS | BSS_CHANGED_BANDWIDTH)) 1108 link_changes |= LINK_CONTEXT_MODIFY_QOS_PARAMS; 1109 1110 if (changes & BSS_CHANGED_HE_BSS_COLOR) 1111 link_changes |= LINK_CONTEXT_MODIFY_HE_PARAMS; 1112 1113 if (link_changes) 1114 iwl_mld_change_link_in_fw(mld, link, link_changes); 1115 1116 if (changes & BSS_CHANGED_BEACON) 1117 iwl_mld_update_beacon_template(mld, vif, link); 1118 } 1119 1120 static 1121 u32 iwl_mld_link_changed_mapping(struct iwl_mld *mld, 1122 struct ieee80211_vif *vif, 1123 struct ieee80211_bss_conf *link_conf, 1124 u64 changes) 1125 { 1126 u32 link_changes = 0; 1127 bool has_he, has_eht; 1128 1129 if (changes & BSS_CHANGED_QOS && vif->cfg.assoc && link_conf->qos) 1130 link_changes |= LINK_CONTEXT_MODIFY_QOS_PARAMS; 1131 1132 if (changes & (BSS_CHANGED_ERP_PREAMBLE | BSS_CHANGED_BASIC_RATES | 1133 BSS_CHANGED_ERP_SLOT)) 1134 link_changes |= LINK_CONTEXT_MODIFY_RATES_INFO; 1135 1136 if (changes & (BSS_CHANGED_HT | BSS_CHANGED_ERP_CTS_PROT)) 1137 link_changes |= LINK_CONTEXT_MODIFY_PROTECT_FLAGS; 1138 1139 /* TODO: task=MLO check mac80211's HE flags and if command is needed 1140 * every time there's a link change. Currently used flags are 1141 * BSS_CHANGED_HE_OBSS_PD and BSS_CHANGED_HE_BSS_COLOR. 1142 */ 1143 has_he = link_conf->he_support && !iwlwifi_mod_params.disable_11ax; 1144 has_eht = link_conf->eht_support && !iwlwifi_mod_params.disable_11be; 1145 1146 if (vif->cfg.assoc && (has_he || has_eht)) { 1147 IWL_DEBUG_MAC80211(mld, "Associated in HE mode\n"); 1148 link_changes |= LINK_CONTEXT_MODIFY_HE_PARAMS; 1149 } 1150 1151 return link_changes; 1152 } 1153 1154 static void 1155 iwl_mld_mac80211_link_info_changed_sta(struct iwl_mld *mld, 1156 struct ieee80211_vif *vif, 1157 struct ieee80211_bss_conf *link_conf, 1158 u64 changes) 1159 { 1160 u32 link_changes = iwl_mld_link_changed_mapping(mld, vif, link_conf, 1161 changes); 1162 1163 if (link_changes) 1164 iwl_mld_change_link_in_fw(mld, link_conf, link_changes); 1165 1166 if (changes & BSS_CHANGED_TPE) 1167 iwl_mld_send_ap_tx_power_constraint_cmd(mld, vif, link_conf); 1168 1169 if (changes & BSS_CHANGED_BEACON_INFO) 1170 iwl_mld_update_mac_power(mld, vif, false); 1171 1172 /* The firmware will wait quite a while after association before it 1173 * starts filtering the beacons. We can safely enable beacon filtering 1174 * upon CQM configuration, even if we didn't get a beacon yet. 1175 */ 1176 if (changes & (BSS_CHANGED_CQM | BSS_CHANGED_BEACON_INFO)) 1177 iwl_mld_enable_beacon_filter(mld, link_conf, false); 1178 1179 /* If we have used OMI before to reduce bandwidth to 80 MHz and then 1180 * increased to 160 MHz again, and then the AP changes to 320 MHz, it 1181 * will think that we're limited to 160 MHz right now. Update it by 1182 * requesting a new OMI bandwidth. 1183 */ 1184 if (changes & BSS_CHANGED_BANDWIDTH) { 1185 enum ieee80211_sta_rx_bandwidth bw; 1186 1187 bw = ieee80211_chan_width_to_rx_bw(link_conf->chanreq.oper.width); 1188 1189 iwl_mld_omi_ap_changed_bw(mld, link_conf, bw); 1190 1191 } 1192 1193 if (changes & BSS_CHANGED_BANDWIDTH) 1194 iwl_mld_retry_emlsr(mld, vif); 1195 } 1196 1197 static int iwl_mld_update_mu_groups(struct iwl_mld *mld, 1198 struct ieee80211_bss_conf *link_conf) 1199 { 1200 struct iwl_mu_group_mgmt_cmd cmd = {}; 1201 1202 BUILD_BUG_ON(sizeof(cmd.membership_status) != 1203 sizeof(link_conf->mu_group.membership)); 1204 BUILD_BUG_ON(sizeof(cmd.user_position) != 1205 sizeof(link_conf->mu_group.position)); 1206 1207 memcpy(cmd.membership_status, link_conf->mu_group.membership, 1208 WLAN_MEMBERSHIP_LEN); 1209 memcpy(cmd.user_position, link_conf->mu_group.position, 1210 WLAN_USER_POSITION_LEN); 1211 1212 return iwl_mld_send_cmd_pdu(mld, 1213 WIDE_ID(DATA_PATH_GROUP, 1214 UPDATE_MU_GROUPS_CMD), 1215 &cmd); 1216 } 1217 1218 static void 1219 iwl_mld_mac80211_link_info_changed(struct ieee80211_hw *hw, 1220 struct ieee80211_vif *vif, 1221 struct ieee80211_bss_conf *link_conf, 1222 u64 changes) 1223 { 1224 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1225 1226 switch (vif->type) { 1227 case NL80211_IFTYPE_STATION: 1228 iwl_mld_mac80211_link_info_changed_sta(mld, vif, link_conf, 1229 changes); 1230 break; 1231 case NL80211_IFTYPE_AP: 1232 case NL80211_IFTYPE_ADHOC: 1233 iwl_mld_link_info_changed_ap_ibss(mld, vif, link_conf, 1234 changes); 1235 break; 1236 case NL80211_IFTYPE_MONITOR: 1237 /* The firmware tracks this on its own in STATION mode, but 1238 * obviously not in sniffer mode. 1239 */ 1240 if (changes & BSS_CHANGED_MU_GROUPS) 1241 iwl_mld_update_mu_groups(mld, link_conf); 1242 break; 1243 default: 1244 /* shouldn't happen */ 1245 WARN_ON_ONCE(1); 1246 } 1247 1248 /* We now know our BSSID, we can configure the MAC context with 1249 * eht_support if needed. 1250 */ 1251 if (changes & BSS_CHANGED_BSSID) 1252 iwl_mld_mac_fw_action(mld, vif, FW_CTXT_ACTION_MODIFY); 1253 1254 if (changes & BSS_CHANGED_TXPOWER) 1255 iwl_mld_set_tx_power(mld, link_conf, link_conf->txpower); 1256 } 1257 1258 static void 1259 iwl_mld_smps_wa(struct iwl_mld *mld, struct ieee80211_vif *vif, bool enable) 1260 { 1261 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1262 1263 /* Send the device-level power commands since the 1264 * firmware checks the POWER_TABLE_CMD's POWER_SAVE_EN bit to 1265 * determine SMPS mode. 1266 */ 1267 if (mld_vif->ps_disabled == !enable) 1268 return; 1269 1270 mld_vif->ps_disabled = !enable; 1271 1272 iwl_mld_update_device_power(mld, false); 1273 } 1274 1275 static 1276 void iwl_mld_mac80211_vif_cfg_changed(struct ieee80211_hw *hw, 1277 struct ieee80211_vif *vif, 1278 u64 changes) 1279 { 1280 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1281 int ret; 1282 1283 lockdep_assert_wiphy(mld->wiphy); 1284 1285 if (vif->type != NL80211_IFTYPE_STATION) 1286 return; 1287 1288 if (changes & BSS_CHANGED_ASSOC) { 1289 ret = iwl_mld_mac_fw_action(mld, vif, FW_CTXT_ACTION_MODIFY); 1290 if (ret) 1291 IWL_ERR(mld, "failed to update context\n"); 1292 1293 if (vif->cfg.assoc) { 1294 /* Clear statistics to get clean beacon counter, and 1295 * ask for periodic statistics, as they are needed for 1296 * link selection and RX OMI decisions. 1297 */ 1298 iwl_mld_clear_stats_in_fw(mld); 1299 iwl_mld_request_periodic_fw_stats(mld, true); 1300 1301 iwl_mld_set_vif_associated(mld, vif); 1302 } else { 1303 iwl_mld_request_periodic_fw_stats(mld, false); 1304 } 1305 } 1306 1307 if (changes & BSS_CHANGED_PS) { 1308 iwl_mld_smps_wa(mld, vif, vif->cfg.ps); 1309 iwl_mld_update_mac_power(mld, vif, false); 1310 } 1311 1312 /* TODO: task=MLO BSS_CHANGED_MLD_VALID_LINKS/CHANGED_MLD_TTLM */ 1313 } 1314 1315 static int 1316 iwl_mld_mac80211_hw_scan(struct ieee80211_hw *hw, 1317 struct ieee80211_vif *vif, 1318 struct ieee80211_scan_request *hw_req) 1319 { 1320 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1321 1322 if (WARN_ON(!hw_req->req.n_channels || 1323 hw_req->req.n_channels > 1324 mld->fw->ucode_capa.n_scan_channels)) 1325 return -EINVAL; 1326 1327 return iwl_mld_regular_scan_start(mld, vif, &hw_req->req, &hw_req->ies); 1328 } 1329 1330 static void 1331 iwl_mld_mac80211_cancel_hw_scan(struct ieee80211_hw *hw, 1332 struct ieee80211_vif *vif) 1333 { 1334 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1335 1336 /* Due to a race condition, it's possible that mac80211 asks 1337 * us to stop a hw_scan when it's already stopped. This can 1338 * happen, for instance, if we stopped the scan ourselves, 1339 * called ieee80211_scan_completed() and the userspace called 1340 * cancel scan before ieee80211_scan_work() could run. 1341 * To handle that, simply return if the scan is not running. 1342 */ 1343 if (mld->scan.status & IWL_MLD_SCAN_REGULAR) 1344 iwl_mld_scan_stop(mld, IWL_MLD_SCAN_REGULAR, true); 1345 } 1346 1347 static int 1348 iwl_mld_mac80211_sched_scan_start(struct ieee80211_hw *hw, 1349 struct ieee80211_vif *vif, 1350 struct cfg80211_sched_scan_request *req, 1351 struct ieee80211_scan_ies *ies) 1352 { 1353 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1354 1355 return iwl_mld_sched_scan_start(mld, vif, req, ies, IWL_MLD_SCAN_SCHED); 1356 } 1357 1358 static int 1359 iwl_mld_mac80211_sched_scan_stop(struct ieee80211_hw *hw, 1360 struct ieee80211_vif *vif) 1361 { 1362 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1363 1364 /* Due to a race condition, it's possible that mac80211 asks 1365 * us to stop a sched_scan when it's already stopped. This 1366 * can happen, for instance, if we stopped the scan ourselves, 1367 * called ieee80211_sched_scan_stopped() and the userspace called 1368 * stop sched scan before ieee80211_sched_scan_stopped_work() 1369 * could run. To handle this, simply return if the scan is 1370 * not running. 1371 */ 1372 if (!(mld->scan.status & IWL_MLD_SCAN_SCHED)) 1373 return 0; 1374 1375 return iwl_mld_scan_stop(mld, IWL_MLD_SCAN_SCHED, false); 1376 } 1377 1378 static void 1379 iwl_mld_restart_complete_vif(void *data, u8 *mac, struct ieee80211_vif *vif) 1380 { 1381 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1382 struct ieee80211_bss_conf *link_conf; 1383 struct iwl_mld *mld = data; 1384 int link_id; 1385 1386 for_each_vif_active_link(vif, link_conf, link_id) { 1387 enum ieee80211_sta_rx_bandwidth bw; 1388 struct iwl_mld_link *mld_link; 1389 1390 mld_link = wiphy_dereference(mld->wiphy, 1391 mld_vif->link[link_id]); 1392 1393 if (WARN_ON_ONCE(!mld_link)) 1394 continue; 1395 1396 bw = mld_link->rx_omi.bw_in_progress; 1397 if (bw) 1398 iwl_mld_change_link_omi_bw(mld, link_conf, bw); 1399 } 1400 } 1401 1402 static void 1403 iwl_mld_mac80211_reconfig_complete(struct ieee80211_hw *hw, 1404 enum ieee80211_reconfig_type reconfig_type) 1405 { 1406 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1407 1408 switch (reconfig_type) { 1409 case IEEE80211_RECONFIG_TYPE_RESTART: 1410 mld->fw_status.in_hw_restart = false; 1411 iwl_mld_send_recovery_cmd(mld, ERROR_RECOVERY_END_OF_RECOVERY); 1412 1413 ieee80211_iterate_interfaces(mld->hw, 1414 IEEE80211_IFACE_ITER_NORMAL, 1415 iwl_mld_restart_complete_vif, mld); 1416 1417 iwl_trans_finish_sw_reset(mld->trans); 1418 /* no need to lock, adding in parallel would schedule too */ 1419 if (!list_empty(&mld->txqs_to_add)) 1420 wiphy_work_queue(mld->wiphy, &mld->add_txqs_wk); 1421 1422 IWL_INFO(mld, "restart completed\n"); 1423 break; 1424 case IEEE80211_RECONFIG_TYPE_SUSPEND: 1425 break; 1426 } 1427 } 1428 1429 static 1430 void iwl_mld_mac80211_mgd_prepare_tx(struct ieee80211_hw *hw, 1431 struct ieee80211_vif *vif, 1432 struct ieee80211_prep_tx_info *info) 1433 { 1434 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1435 u32 duration = IWL_MLD_SESSION_PROTECTION_ASSOC_TIME_MS; 1436 1437 /* After a successful association the connection is etalibeshed 1438 * and we can rely on the quota to send the disassociation frame. 1439 */ 1440 if (info->was_assoc) 1441 return; 1442 1443 if (info->duration > duration) 1444 duration = info->duration; 1445 1446 iwl_mld_schedule_session_protection(mld, vif, duration, 1447 IWL_MLD_SESSION_PROTECTION_MIN_TIME_MS, 1448 info->link_id); 1449 } 1450 1451 static 1452 void iwl_mld_mac_mgd_complete_tx(struct ieee80211_hw *hw, 1453 struct ieee80211_vif *vif, 1454 struct ieee80211_prep_tx_info *info) 1455 { 1456 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1457 1458 /* Successful authentication is the only case that requires to let 1459 * the session protection go. We'll need it for the upcoming 1460 * association. For all the other cases, we need to cancel the session 1461 * protection. 1462 * After successful association the connection is established and 1463 * further mgd tx can rely on the quota. 1464 */ 1465 if (info->success && info->subtype == IEEE80211_STYPE_AUTH) 1466 return; 1467 1468 /* The firmware will be on medium after we configure the vif as 1469 * associated. Removing the session protection allows the firmware 1470 * to stop being on medium. In order to ensure the continuity of our 1471 * presence on medium, we need first to configure the vif as associated 1472 * and only then, remove the session protection. 1473 * Currently, mac80211 calls vif_cfg_changed() first and then, 1474 * drv_mgd_complete_tx(). Ensure that this assumption stays true by 1475 * a warning. 1476 */ 1477 WARN_ON(info->success && 1478 (info->subtype == IEEE80211_STYPE_ASSOC_REQ || 1479 info->subtype == IEEE80211_STYPE_REASSOC_REQ) && 1480 !vif->cfg.assoc); 1481 1482 iwl_mld_cancel_session_protection(mld, vif, info->link_id); 1483 } 1484 1485 static int 1486 iwl_mld_mac80211_conf_tx(struct ieee80211_hw *hw, 1487 struct ieee80211_vif *vif, 1488 unsigned int link_id, u16 ac, 1489 const struct ieee80211_tx_queue_params *params) 1490 { 1491 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1492 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1493 struct iwl_mld_link *link; 1494 1495 lockdep_assert_wiphy(mld->wiphy); 1496 1497 link = iwl_mld_link_dereference_check(mld_vif, link_id); 1498 if (!link) 1499 return -EINVAL; 1500 1501 link->queue_params[ac] = *params; 1502 1503 /* No need to update right away, we'll get BSS_CHANGED_QOS 1504 * The exception is P2P_DEVICE interface which needs immediate update. 1505 */ 1506 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 1507 iwl_mld_change_link_in_fw(mld, &vif->bss_conf, 1508 LINK_CONTEXT_MODIFY_QOS_PARAMS); 1509 1510 return 0; 1511 } 1512 1513 static void iwl_mld_set_uapsd(struct iwl_mld *mld, struct ieee80211_vif *vif) 1514 { 1515 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 1516 1517 if (vif->type != NL80211_IFTYPE_STATION) 1518 return; 1519 1520 if (vif->p2p && 1521 !(iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_P2P_CLIENT)) 1522 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 1523 1524 if (!vif->p2p && 1525 !(iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) 1526 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 1527 } 1528 1529 int iwl_mld_tdls_sta_count(struct iwl_mld *mld) 1530 { 1531 int count = 0; 1532 1533 lockdep_assert_wiphy(mld->wiphy); 1534 1535 for (int i = 0; i < mld->fw->ucode_capa.num_stations; i++) { 1536 struct ieee80211_link_sta *link_sta; 1537 1538 link_sta = wiphy_dereference(mld->wiphy, 1539 mld->fw_id_to_link_sta[i]); 1540 if (IS_ERR_OR_NULL(link_sta)) 1541 continue; 1542 1543 if (!link_sta->sta->tdls) 1544 continue; 1545 1546 count++; 1547 } 1548 1549 return count; 1550 } 1551 1552 static void iwl_mld_check_he_obss_narrow_bw_ru_iter(struct wiphy *wiphy, 1553 struct cfg80211_bss *bss, 1554 void *_data) 1555 { 1556 bool *tolerated = _data; 1557 const struct cfg80211_bss_ies *ies; 1558 const struct element *elem; 1559 1560 rcu_read_lock(); 1561 ies = rcu_dereference(bss->ies); 1562 elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, ies->data, 1563 ies->len); 1564 1565 if (!elem || elem->datalen < 10 || 1566 !(elem->data[10] & 1567 WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT)) { 1568 *tolerated = false; 1569 } 1570 rcu_read_unlock(); 1571 } 1572 1573 static void 1574 iwl_mld_check_he_obss_narrow_bw_ru(struct iwl_mld *mld, 1575 struct iwl_mld_link *mld_link, 1576 struct ieee80211_bss_conf *link_conf) 1577 { 1578 bool tolerated = true; 1579 1580 if (WARN_ON_ONCE(!link_conf->chanreq.oper.chan)) 1581 return; 1582 1583 if (!(link_conf->chanreq.oper.chan->flags & IEEE80211_CHAN_RADAR)) { 1584 mld_link->he_ru_2mhz_block = false; 1585 return; 1586 } 1587 1588 cfg80211_bss_iter(mld->wiphy, &link_conf->chanreq.oper, 1589 iwl_mld_check_he_obss_narrow_bw_ru_iter, &tolerated); 1590 1591 /* If there is at least one AP on radar channel that cannot 1592 * tolerate 26-tone RU UL OFDMA transmissions using HE TB PPDU. 1593 */ 1594 mld_link->he_ru_2mhz_block = !tolerated; 1595 } 1596 1597 static void iwl_mld_link_set_2mhz_block(struct iwl_mld *mld, 1598 struct ieee80211_vif *vif, 1599 struct ieee80211_sta *sta) 1600 { 1601 struct ieee80211_link_sta *link_sta; 1602 unsigned int link_id; 1603 1604 for_each_sta_active_link(vif, sta, link_sta, link_id) { 1605 struct ieee80211_bss_conf *link_conf = 1606 link_conf_dereference_protected(vif, link_id); 1607 struct iwl_mld_link *mld_link = 1608 iwl_mld_link_from_mac80211(link_conf); 1609 1610 if (WARN_ON(!link_conf || !mld_link)) 1611 continue; 1612 1613 if (link_sta->he_cap.has_he) 1614 iwl_mld_check_he_obss_narrow_bw_ru(mld, mld_link, 1615 link_conf); 1616 } 1617 } 1618 1619 static int iwl_mld_move_sta_state_up(struct iwl_mld *mld, 1620 struct ieee80211_vif *vif, 1621 struct ieee80211_sta *sta, 1622 enum ieee80211_sta_state old_state, 1623 enum ieee80211_sta_state new_state) 1624 { 1625 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1626 int tdls_count = 0; 1627 int ret; 1628 1629 if (old_state == IEEE80211_STA_NOTEXIST && 1630 new_state == IEEE80211_STA_NONE) { 1631 if (sta->tdls) { 1632 if (vif->p2p || hweight8(mld->used_phy_ids) != 1) 1633 return -EBUSY; 1634 1635 tdls_count = iwl_mld_tdls_sta_count(mld); 1636 if (tdls_count >= IWL_TDLS_STA_COUNT) 1637 return -EBUSY; 1638 } 1639 1640 /* 1641 * If this is the first STA (i.e. the AP) it won't do 1642 * anything, otherwise must leave for any new STA on 1643 * any other interface, or for TDLS, etc. 1644 * Need to call this _before_ adding the STA so it can 1645 * look up the one STA to use to ask mac80211 to leave 1646 * OMI; in the unlikely event that adding the new STA 1647 * then fails we'll just re-enter OMI later (via the 1648 * statistics notification handling.) 1649 */ 1650 iwl_mld_leave_omi_bw_reduction(mld); 1651 1652 ret = iwl_mld_add_sta(mld, sta, vif, STATION_TYPE_PEER); 1653 if (ret) 1654 return ret; 1655 1656 /* just added first TDLS STA, so disable PM */ 1657 if (sta->tdls && tdls_count == 0) 1658 iwl_mld_update_mac_power(mld, vif, false); 1659 1660 if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls) 1661 mld_vif->ap_sta = sta; 1662 1663 /* Initialize TLC here already - this really tells 1664 * the firmware only what the supported legacy rates are 1665 * (may be) since it's initialized already from what the 1666 * AP advertised in the beacon/probe response. This will 1667 * allow the firmware to send auth/assoc frames with one 1668 * of the supported rates already, rather than having to 1669 * use a mandatory rate. 1670 * If we're the AP, we'll just assume mandatory rates at 1671 * this point, but we know nothing about the STA anyway. 1672 */ 1673 iwl_mld_config_tlc(mld, vif, sta); 1674 1675 return ret; 1676 } else if (old_state == IEEE80211_STA_NONE && 1677 new_state == IEEE80211_STA_AUTH) { 1678 iwl_mld_set_uapsd(mld, vif); 1679 return 0; 1680 } else if (old_state == IEEE80211_STA_AUTH && 1681 new_state == IEEE80211_STA_ASSOC) { 1682 ret = iwl_mld_update_all_link_stations(mld, sta); 1683 1684 if (vif->type == NL80211_IFTYPE_STATION) 1685 iwl_mld_link_set_2mhz_block(mld, vif, sta); 1686 /* Now the link_sta's capabilities are set, update the FW */ 1687 iwl_mld_config_tlc(mld, vif, sta); 1688 1689 if (vif->type == NL80211_IFTYPE_AP) { 1690 /* Update MAC_CFG_FILTER_ACCEPT_BEACON if at least 1691 * one sta is associated 1692 */ 1693 if (++mld_vif->num_associated_stas == 1) 1694 ret = iwl_mld_mac_fw_action(mld, vif, 1695 FW_CTXT_ACTION_MODIFY); 1696 } 1697 1698 return ret; 1699 } else if (old_state == IEEE80211_STA_ASSOC && 1700 new_state == IEEE80211_STA_AUTHORIZED) { 1701 ret = 0; 1702 1703 if (!sta->tdls) { 1704 mld_vif->authorized = true; 1705 1706 /* Ensure any block due to a non-BSS link is synced */ 1707 iwl_mld_emlsr_check_non_bss_block(mld, 0); 1708 1709 /* Block EMLSR until a certain throughput it reached */ 1710 if (!mld->fw_status.in_hw_restart && 1711 IWL_MLD_ENTER_EMLSR_TPT_THRESH > 0) 1712 iwl_mld_block_emlsr(mld_vif->mld, vif, 1713 IWL_MLD_EMLSR_BLOCKED_TPT, 1714 0); 1715 1716 /* clear COEX_HIGH_PRIORITY_ENABLE */ 1717 ret = iwl_mld_mac_fw_action(mld, vif, 1718 FW_CTXT_ACTION_MODIFY); 1719 if (ret) 1720 return ret; 1721 iwl_mld_smps_wa(mld, vif, vif->cfg.ps); 1722 } 1723 1724 /* MFP is set by default before the station is authorized. 1725 * Clear it here in case it's not used. 1726 */ 1727 if (!sta->mfp) 1728 ret = iwl_mld_update_all_link_stations(mld, sta); 1729 1730 /* We can use wide bandwidth now, not only 20 MHz */ 1731 iwl_mld_config_tlc(mld, vif, sta); 1732 1733 return ret; 1734 } else { 1735 return -EINVAL; 1736 } 1737 } 1738 1739 static int iwl_mld_move_sta_state_down(struct iwl_mld *mld, 1740 struct ieee80211_vif *vif, 1741 struct ieee80211_sta *sta, 1742 enum ieee80211_sta_state old_state, 1743 enum ieee80211_sta_state new_state) 1744 { 1745 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1746 1747 if (old_state == IEEE80211_STA_AUTHORIZED && 1748 new_state == IEEE80211_STA_ASSOC) { 1749 if (!sta->tdls) { 1750 mld_vif->authorized = false; 1751 1752 memset(&mld_vif->emlsr.zeroed_on_not_authorized, 0, 1753 sizeof(mld_vif->emlsr.zeroed_on_not_authorized)); 1754 1755 wiphy_delayed_work_cancel(mld->wiphy, 1756 &mld_vif->emlsr.prevent_done_wk); 1757 wiphy_delayed_work_cancel(mld->wiphy, 1758 &mld_vif->emlsr.tmp_non_bss_done_wk); 1759 wiphy_work_cancel(mld->wiphy, &mld_vif->emlsr.unblock_tpt_wk); 1760 wiphy_delayed_work_cancel(mld->wiphy, 1761 &mld_vif->emlsr.check_tpt_wk); 1762 1763 iwl_mld_reset_cca_40mhz_workaround(mld, vif); 1764 iwl_mld_smps_wa(mld, vif, true); 1765 } 1766 1767 /* once we move into assoc state, need to update the FW to 1768 * stop using wide bandwidth 1769 */ 1770 iwl_mld_config_tlc(mld, vif, sta); 1771 } else if (old_state == IEEE80211_STA_ASSOC && 1772 new_state == IEEE80211_STA_AUTH) { 1773 if (vif->type == NL80211_IFTYPE_AP && 1774 !WARN_ON(!mld_vif->num_associated_stas)) { 1775 /* Update MAC_CFG_FILTER_ACCEPT_BEACON if the last sta 1776 * is disassociating 1777 */ 1778 if (--mld_vif->num_associated_stas == 0) 1779 iwl_mld_mac_fw_action(mld, vif, 1780 FW_CTXT_ACTION_MODIFY); 1781 } 1782 } else if (old_state == IEEE80211_STA_AUTH && 1783 new_state == IEEE80211_STA_NONE) { 1784 /* nothing */ 1785 } else if (old_state == IEEE80211_STA_NONE && 1786 new_state == IEEE80211_STA_NOTEXIST) { 1787 iwl_mld_remove_sta(mld, sta); 1788 1789 if (sta->tdls && iwl_mld_tdls_sta_count(mld) == 0) { 1790 /* just removed last TDLS STA, so enable PM */ 1791 iwl_mld_update_mac_power(mld, vif, false); 1792 } 1793 } else { 1794 return -EINVAL; 1795 } 1796 return 0; 1797 } 1798 1799 static int iwl_mld_mac80211_sta_state(struct ieee80211_hw *hw, 1800 struct ieee80211_vif *vif, 1801 struct ieee80211_sta *sta, 1802 enum ieee80211_sta_state old_state, 1803 enum ieee80211_sta_state new_state) 1804 { 1805 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1806 struct iwl_mld_sta *mld_sta = iwl_mld_sta_from_mac80211(sta); 1807 1808 IWL_DEBUG_MAC80211(mld, "station %pM state change %d->%d\n", 1809 sta->addr, old_state, new_state); 1810 1811 mld_sta->sta_state = new_state; 1812 1813 if (old_state < new_state) 1814 return iwl_mld_move_sta_state_up(mld, vif, sta, old_state, 1815 new_state); 1816 else 1817 return iwl_mld_move_sta_state_down(mld, vif, sta, old_state, 1818 new_state); 1819 } 1820 1821 static void iwl_mld_mac80211_flush(struct ieee80211_hw *hw, 1822 struct ieee80211_vif *vif, 1823 u32 queues, bool drop) 1824 { 1825 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1826 1827 /* Make sure we're done with the deferred traffic before flushing */ 1828 iwl_mld_add_txq_list(mld); 1829 1830 for (int i = 0; i < mld->fw->ucode_capa.num_stations; i++) { 1831 struct ieee80211_link_sta *link_sta = 1832 wiphy_dereference(mld->wiphy, 1833 mld->fw_id_to_link_sta[i]); 1834 1835 if (IS_ERR_OR_NULL(link_sta)) 1836 continue; 1837 1838 /* Check that the sta belongs to the given vif */ 1839 if (vif && vif != iwl_mld_sta_from_mac80211(link_sta->sta)->vif) 1840 continue; 1841 1842 if (drop) 1843 iwl_mld_flush_sta_txqs(mld, link_sta->sta); 1844 else 1845 iwl_mld_wait_sta_txqs_empty(mld, link_sta->sta); 1846 } 1847 } 1848 1849 static void iwl_mld_mac80211_flush_sta(struct ieee80211_hw *hw, 1850 struct ieee80211_vif *vif, 1851 struct ieee80211_sta *sta) 1852 { 1853 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1854 1855 iwl_mld_flush_sta_txqs(mld, sta); 1856 } 1857 1858 static int 1859 iwl_mld_mac80211_ampdu_action(struct ieee80211_hw *hw, 1860 struct ieee80211_vif *vif, 1861 struct ieee80211_ampdu_params *params) 1862 { 1863 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1864 struct ieee80211_sta *sta = params->sta; 1865 enum ieee80211_ampdu_mlme_action action = params->action; 1866 u16 tid = params->tid; 1867 u16 ssn = params->ssn; 1868 u16 buf_size = params->buf_size; 1869 u16 timeout = params->timeout; 1870 int ret; 1871 1872 IWL_DEBUG_HT(mld, "A-MPDU action on addr %pM tid: %d action: %d\n", 1873 sta->addr, tid, action); 1874 1875 switch (action) { 1876 case IEEE80211_AMPDU_RX_START: 1877 ret = iwl_mld_ampdu_rx_start(mld, sta, tid, ssn, buf_size, 1878 timeout); 1879 break; 1880 case IEEE80211_AMPDU_RX_STOP: 1881 ret = iwl_mld_ampdu_rx_stop(mld, sta, tid); 1882 break; 1883 default: 1884 /* The mac80211 TX_AMPDU_SETUP_IN_HW flag is set for all 1885 * devices, since all support TX A-MPDU offload in hardware. 1886 * Therefore, no TX action should be requested here. 1887 */ 1888 WARN_ON_ONCE(1); 1889 return -EINVAL; 1890 } 1891 1892 return ret; 1893 } 1894 1895 static bool iwl_mld_can_hw_csum(struct sk_buff *skb) 1896 { 1897 u8 protocol = ip_hdr(skb)->protocol; 1898 1899 return protocol == IPPROTO_TCP || protocol == IPPROTO_UDP; 1900 } 1901 1902 static bool iwl_mld_mac80211_can_aggregate(struct ieee80211_hw *hw, 1903 struct sk_buff *head, 1904 struct sk_buff *skb) 1905 { 1906 if (!IS_ENABLED(CONFIG_INET)) 1907 return false; 1908 1909 /* For now don't aggregate IPv6 in AMSDU */ 1910 if (skb->protocol != htons(ETH_P_IP)) 1911 return false; 1912 1913 /* Allow aggregation only if both frames have the same HW csum offload 1914 * capability, ensuring consistent HW or SW csum handling in A-MSDU. 1915 */ 1916 return iwl_mld_can_hw_csum(skb) == iwl_mld_can_hw_csum(head); 1917 } 1918 1919 static void iwl_mld_mac80211_sync_rx_queues(struct ieee80211_hw *hw) 1920 { 1921 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1922 1923 iwl_mld_sync_rx_queues(mld, IWL_MLD_RXQ_EMPTY, NULL, 0); 1924 } 1925 1926 static void iwl_mld_sta_rc_update(struct ieee80211_hw *hw, 1927 struct ieee80211_vif *vif, 1928 struct ieee80211_link_sta *link_sta, 1929 u32 changed) 1930 { 1931 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1932 1933 if (changed & (IEEE80211_RC_BW_CHANGED | 1934 IEEE80211_RC_SUPP_RATES_CHANGED | 1935 IEEE80211_RC_NSS_CHANGED)) { 1936 struct ieee80211_bss_conf *link = 1937 link_conf_dereference_check(vif, link_sta->link_id); 1938 1939 if (WARN_ON(!link)) 1940 return; 1941 1942 iwl_mld_config_tlc_link(mld, vif, link, link_sta); 1943 } 1944 } 1945 1946 static void iwl_mld_set_wakeup(struct ieee80211_hw *hw, bool enabled) 1947 { 1948 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1949 1950 device_set_wakeup_enable(mld->trans->dev, enabled); 1951 } 1952 1953 /* Returns 0 on success. 1 if failed to suspend with wowlan: 1954 * If the circumstances didn't satisfy the conditions for suspension 1955 * with wowlan, mac80211 would use the no_wowlan flow. 1956 * If an error had occurred we update the trans status and state here 1957 * and the result will be stopping the FW. 1958 */ 1959 static int 1960 iwl_mld_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1961 { 1962 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1963 int ret; 1964 1965 iwl_fw_runtime_suspend(&mld->fwrt); 1966 1967 ret = iwl_mld_wowlan_suspend(mld, wowlan); 1968 if (ret) { 1969 if (ret < 0) { 1970 mld->trans->state = IWL_TRANS_NO_FW; 1971 set_bit(STATUS_FW_ERROR, &mld->trans->status); 1972 } 1973 return 1; 1974 } 1975 1976 if (iwl_mld_no_wowlan_suspend(mld)) 1977 return 1; 1978 1979 return 0; 1980 } 1981 1982 static int iwl_mld_resume(struct ieee80211_hw *hw) 1983 { 1984 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1985 int ret; 1986 1987 ret = iwl_mld_wowlan_resume(mld); 1988 if (ret) 1989 return ret; 1990 1991 iwl_fw_runtime_resume(&mld->fwrt); 1992 1993 iwl_mld_low_latency_restart(mld); 1994 1995 return 0; 1996 } 1997 1998 static int iwl_mld_alloc_ptk_pn(struct iwl_mld *mld, 1999 struct iwl_mld_sta *mld_sta, 2000 struct ieee80211_key_conf *key, 2001 struct iwl_mld_ptk_pn **ptk_pn) 2002 { 2003 u8 num_rx_queues = mld->trans->num_rx_queues; 2004 int keyidx = key->keyidx; 2005 struct ieee80211_key_seq seq; 2006 2007 if (WARN_ON(keyidx >= ARRAY_SIZE(mld_sta->ptk_pn))) 2008 return -EINVAL; 2009 2010 WARN_ON(rcu_access_pointer(mld_sta->ptk_pn[keyidx])); 2011 *ptk_pn = kzalloc(struct_size(*ptk_pn, q, num_rx_queues), 2012 GFP_KERNEL); 2013 if (!*ptk_pn) 2014 return -ENOMEM; 2015 2016 for (u8 tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 2017 ieee80211_get_key_rx_seq(key, tid, &seq); 2018 for (u8 q = 0; q < num_rx_queues; q++) 2019 memcpy((*ptk_pn)->q[q].pn[tid], seq.ccmp.pn, 2020 IEEE80211_CCMP_PN_LEN); 2021 } 2022 2023 rcu_assign_pointer(mld_sta->ptk_pn[keyidx], *ptk_pn); 2024 2025 return 0; 2026 } 2027 2028 static int iwl_mld_set_key_add(struct iwl_mld *mld, 2029 struct ieee80211_vif *vif, 2030 struct ieee80211_sta *sta, 2031 struct ieee80211_key_conf *key) 2032 { 2033 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2034 struct iwl_mld_sta *mld_sta = 2035 sta ? iwl_mld_sta_from_mac80211(sta) : NULL; 2036 struct iwl_mld_ptk_pn *ptk_pn = NULL; 2037 int keyidx = key->keyidx; 2038 int ret; 2039 2040 /* Will be set to 0 if added successfully */ 2041 key->hw_key_idx = STA_KEY_IDX_INVALID; 2042 2043 switch (key->cipher) { 2044 case WLAN_CIPHER_SUITE_WEP40: 2045 case WLAN_CIPHER_SUITE_WEP104: 2046 IWL_DEBUG_MAC80211(mld, "Use SW encryption for WEP\n"); 2047 return -EOPNOTSUPP; 2048 case WLAN_CIPHER_SUITE_TKIP: 2049 if (vif->type == NL80211_IFTYPE_STATION) { 2050 key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE; 2051 break; 2052 } 2053 IWL_DEBUG_MAC80211(mld, "Use SW encryption for TKIP\n"); 2054 return -EOPNOTSUPP; 2055 case WLAN_CIPHER_SUITE_CCMP: 2056 case WLAN_CIPHER_SUITE_GCMP: 2057 case WLAN_CIPHER_SUITE_GCMP_256: 2058 case WLAN_CIPHER_SUITE_AES_CMAC: 2059 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2060 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2061 break; 2062 default: 2063 return -EOPNOTSUPP; 2064 } 2065 2066 if (vif->type == NL80211_IFTYPE_STATION && 2067 (keyidx == 6 || keyidx == 7)) 2068 rcu_assign_pointer(mld_vif->bigtks[keyidx - 6], key); 2069 2070 /* After exiting from RFKILL, hostapd configures GTK/ITGK before the 2071 * AP is started, but those keys can't be sent to the FW before the 2072 * MCAST/BCAST STAs are added to it (which happens upon AP start). 2073 * Store it here to be sent later when the AP is started. 2074 */ 2075 if ((vif->type == NL80211_IFTYPE_ADHOC || 2076 vif->type == NL80211_IFTYPE_AP) && !sta && 2077 !mld_vif->ap_ibss_active) 2078 return iwl_mld_store_ap_early_key(mld, key, mld_vif); 2079 2080 if (!mld->fw_status.in_hw_restart && mld_sta && 2081 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 2082 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 2083 key->cipher == WLAN_CIPHER_SUITE_GCMP || 2084 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 2085 ret = iwl_mld_alloc_ptk_pn(mld, mld_sta, key, &ptk_pn); 2086 if (ret) 2087 return ret; 2088 } 2089 2090 IWL_DEBUG_MAC80211(mld, "set hwcrypto key (sta:%pM, id:%d)\n", 2091 sta ? sta->addr : NULL, keyidx); 2092 2093 ret = iwl_mld_add_key(mld, vif, sta, key); 2094 if (ret) { 2095 IWL_WARN(mld, "set key failed (%d)\n", ret); 2096 if (ptk_pn) { 2097 RCU_INIT_POINTER(mld_sta->ptk_pn[keyidx], NULL); 2098 kfree(ptk_pn); 2099 } 2100 2101 return -EOPNOTSUPP; 2102 } 2103 2104 return 0; 2105 } 2106 2107 static void iwl_mld_set_key_remove(struct iwl_mld *mld, 2108 struct ieee80211_vif *vif, 2109 struct ieee80211_sta *sta, 2110 struct ieee80211_key_conf *key) 2111 { 2112 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2113 struct iwl_mld_sta *mld_sta = 2114 sta ? iwl_mld_sta_from_mac80211(sta) : NULL; 2115 int keyidx = key->keyidx; 2116 2117 if (vif->type == NL80211_IFTYPE_STATION && 2118 (keyidx == 6 || keyidx == 7)) 2119 RCU_INIT_POINTER(mld_vif->bigtks[keyidx - 6], NULL); 2120 2121 if (mld_sta && key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 2122 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 2123 key->cipher == WLAN_CIPHER_SUITE_GCMP || 2124 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 2125 struct iwl_mld_ptk_pn *ptk_pn; 2126 2127 if (WARN_ON(keyidx >= ARRAY_SIZE(mld_sta->ptk_pn))) 2128 return; 2129 2130 ptk_pn = wiphy_dereference(mld->wiphy, 2131 mld_sta->ptk_pn[keyidx]); 2132 RCU_INIT_POINTER(mld_sta->ptk_pn[keyidx], NULL); 2133 if (!WARN_ON(!ptk_pn)) 2134 kfree_rcu(ptk_pn, rcu_head); 2135 } 2136 2137 /* if this key was stored to be added later to the FW - free it here */ 2138 if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) 2139 iwl_mld_free_ap_early_key(mld, key, mld_vif); 2140 2141 /* We already removed it */ 2142 if (key->hw_key_idx == STA_KEY_IDX_INVALID) 2143 return; 2144 2145 IWL_DEBUG_MAC80211(mld, "disable hwcrypto key\n"); 2146 2147 iwl_mld_remove_key(mld, vif, sta, key); 2148 } 2149 2150 static int iwl_mld_mac80211_set_key(struct ieee80211_hw *hw, 2151 enum set_key_cmd cmd, 2152 struct ieee80211_vif *vif, 2153 struct ieee80211_sta *sta, 2154 struct ieee80211_key_conf *key) 2155 { 2156 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2157 int ret; 2158 2159 switch (cmd) { 2160 case SET_KEY: 2161 ret = iwl_mld_set_key_add(mld, vif, sta, key); 2162 if (ret) 2163 ret = -EOPNOTSUPP; 2164 break; 2165 case DISABLE_KEY: 2166 iwl_mld_set_key_remove(mld, vif, sta, key); 2167 ret = 0; 2168 break; 2169 default: 2170 ret = -EINVAL; 2171 break; 2172 } 2173 2174 return ret; 2175 } 2176 2177 static int 2178 iwl_mld_pre_channel_switch(struct ieee80211_hw *hw, 2179 struct ieee80211_vif *vif, 2180 struct ieee80211_channel_switch *chsw) 2181 { 2182 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2183 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2184 struct iwl_mld_link *mld_link = 2185 iwl_mld_link_dereference_check(mld_vif, chsw->link_id); 2186 u8 primary; 2187 int selected; 2188 2189 lockdep_assert_wiphy(mld->wiphy); 2190 2191 if (WARN_ON(!mld_link)) 2192 return -EINVAL; 2193 2194 IWL_DEBUG_MAC80211(mld, "pre CSA to freq %d\n", 2195 chsw->chandef.center_freq1); 2196 2197 if (!iwl_mld_emlsr_active(vif)) 2198 return 0; 2199 2200 primary = iwl_mld_get_primary_link(vif); 2201 2202 /* stay on the primary link unless it is undergoing a CSA with quiet */ 2203 if (chsw->link_id == primary && chsw->block_tx) 2204 selected = iwl_mld_get_other_link(vif, primary); 2205 else 2206 selected = primary; 2207 2208 /* Remember to tell the firmware that this link can't tx 2209 * Note that this logic seems to be unrelated to emlsr, but it 2210 * really is needed only when emlsr is active. When we have a 2211 * single link, the firmware will handle all this on its own. 2212 * In multi-link scenarios, we can learn about the CSA from 2213 * another link and this logic is too complex for the firmware 2214 * to track. 2215 * Since we want to de-activate the link that got a CSA with mode=1, 2216 * we need to tell the firmware not to send any frame on that link 2217 * as the firmware may not be aware that link is under a CSA 2218 * with mode=1 (no Tx allowed). 2219 */ 2220 mld_link->silent_deactivation = chsw->block_tx; 2221 iwl_mld_exit_emlsr(mld, vif, IWL_MLD_EMLSR_EXIT_CSA, selected); 2222 2223 return 0; 2224 } 2225 2226 static void 2227 iwl_mld_channel_switch(struct ieee80211_hw *hw, 2228 struct ieee80211_vif *vif, 2229 struct ieee80211_channel_switch *chsw) 2230 { 2231 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2232 2233 /* By implementing this operation, we prevent mac80211 from 2234 * starting its own channel switch timer, so that we can call 2235 * ieee80211_chswitch_done() ourselves at the right time 2236 * (Upon receiving the channel_switch_start notification from the fw) 2237 */ 2238 IWL_DEBUG_MAC80211(mld, 2239 "dummy channel switch op\n"); 2240 } 2241 2242 static int 2243 iwl_mld_post_channel_switch(struct ieee80211_hw *hw, 2244 struct ieee80211_vif *vif, 2245 struct ieee80211_bss_conf *link_conf) 2246 { 2247 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2248 struct iwl_mld_link *mld_link = iwl_mld_link_from_mac80211(link_conf); 2249 2250 lockdep_assert_wiphy(mld->wiphy); 2251 2252 WARN_ON(mld_link->silent_deactivation); 2253 2254 return 0; 2255 } 2256 2257 static void 2258 iwl_mld_abort_channel_switch(struct ieee80211_hw *hw, 2259 struct ieee80211_vif *vif, 2260 struct ieee80211_bss_conf *link_conf) 2261 { 2262 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2263 struct iwl_mld_link *mld_link = iwl_mld_link_from_mac80211(link_conf); 2264 2265 IWL_DEBUG_MAC80211(mld, 2266 "abort channel switch op\n"); 2267 mld_link->silent_deactivation = false; 2268 } 2269 2270 static int 2271 iwl_mld_switch_vif_chanctx_swap(struct ieee80211_hw *hw, 2272 struct ieee80211_vif_chanctx_switch *vifs) 2273 { 2274 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2275 int ret; 2276 2277 iwl_mld_unassign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2278 vifs[0].old_ctx); 2279 iwl_mld_remove_chanctx(hw, vifs[0].old_ctx); 2280 2281 ret = iwl_mld_add_chanctx(hw, vifs[0].new_ctx); 2282 if (ret) { 2283 IWL_ERR(mld, "failed to add new_ctx during channel switch\n"); 2284 goto out_reassign; 2285 } 2286 2287 ret = iwl_mld_assign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2288 vifs[0].new_ctx); 2289 if (ret) { 2290 IWL_ERR(mld, 2291 "failed to assign new_ctx during channel switch\n"); 2292 goto out_remove; 2293 } 2294 2295 return 0; 2296 2297 out_remove: 2298 iwl_mld_remove_chanctx(hw, vifs[0].new_ctx); 2299 out_reassign: 2300 if (iwl_mld_add_chanctx(hw, vifs[0].old_ctx)) { 2301 IWL_ERR(mld, "failed to add old_ctx after failure\n"); 2302 return ret; 2303 } 2304 2305 if (iwl_mld_assign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2306 vifs[0].old_ctx)) 2307 IWL_ERR(mld, "failed to reassign old_ctx after failure\n"); 2308 2309 return ret; 2310 } 2311 2312 static int 2313 iwl_mld_switch_vif_chanctx_reassign(struct ieee80211_hw *hw, 2314 struct ieee80211_vif_chanctx_switch *vifs) 2315 { 2316 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2317 int ret; 2318 2319 iwl_mld_unassign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2320 vifs[0].old_ctx); 2321 ret = iwl_mld_assign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2322 vifs[0].new_ctx); 2323 if (ret) { 2324 IWL_ERR(mld, 2325 "failed to assign new_ctx during channel switch\n"); 2326 goto out_reassign; 2327 } 2328 2329 return 0; 2330 2331 out_reassign: 2332 if (iwl_mld_assign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2333 vifs[0].old_ctx)) 2334 IWL_ERR(mld, "failed to reassign old_ctx after failure\n"); 2335 2336 return ret; 2337 } 2338 2339 static int 2340 iwl_mld_switch_vif_chanctx(struct ieee80211_hw *hw, 2341 struct ieee80211_vif_chanctx_switch *vifs, 2342 int n_vifs, 2343 enum ieee80211_chanctx_switch_mode mode) 2344 { 2345 int ret; 2346 2347 /* we only support a single-vif right now */ 2348 if (n_vifs > 1) 2349 return -EOPNOTSUPP; 2350 2351 switch (mode) { 2352 case CHANCTX_SWMODE_SWAP_CONTEXTS: 2353 ret = iwl_mld_switch_vif_chanctx_swap(hw, vifs); 2354 break; 2355 case CHANCTX_SWMODE_REASSIGN_VIF: 2356 ret = iwl_mld_switch_vif_chanctx_reassign(hw, vifs); 2357 break; 2358 default: 2359 ret = -EOPNOTSUPP; 2360 break; 2361 } 2362 2363 return ret; 2364 } 2365 2366 static void iwl_mld_sta_pre_rcu_remove(struct ieee80211_hw *hw, 2367 struct ieee80211_vif *vif, 2368 struct ieee80211_sta *sta) 2369 { 2370 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2371 struct iwl_mld_sta *mld_sta = iwl_mld_sta_from_mac80211(sta); 2372 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2373 struct iwl_mld_link_sta *mld_link_sta; 2374 u8 link_id; 2375 2376 lockdep_assert_wiphy(mld->wiphy); 2377 2378 /* This is called before mac80211 does RCU synchronisation, 2379 * so here we already invalidate our internal RCU-protected 2380 * station pointer. The rest of the code will thus no longer 2381 * be able to find the station this way, and we don't rely 2382 * on further RCU synchronisation after the sta_state() 2383 * callback deleted the station. 2384 */ 2385 for_each_mld_link_sta(mld_sta, mld_link_sta, link_id) 2386 RCU_INIT_POINTER(mld->fw_id_to_link_sta[mld_link_sta->fw_id], 2387 NULL); 2388 2389 if (sta == mld_vif->ap_sta) 2390 mld_vif->ap_sta = NULL; 2391 } 2392 2393 static void 2394 iwl_mld_mac80211_mgd_protect_tdls_discover(struct ieee80211_hw *hw, 2395 struct ieee80211_vif *vif, 2396 unsigned int link_id) 2397 { 2398 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2399 struct ieee80211_bss_conf *link_conf; 2400 u32 duration; 2401 int ret; 2402 2403 link_conf = wiphy_dereference(hw->wiphy, vif->link_conf[link_id]); 2404 if (WARN_ON_ONCE(!link_conf)) 2405 return; 2406 2407 /* Protect the session to hear the TDLS setup response on the channel */ 2408 2409 duration = 2 * link_conf->dtim_period * link_conf->beacon_int; 2410 2411 ret = iwl_mld_start_session_protection(mld, vif, duration, duration, 2412 link_id, HZ / 5); 2413 if (ret) 2414 IWL_ERR(mld, 2415 "Failed to start session protection for TDLS: %d\n", 2416 ret); 2417 } 2418 2419 static bool iwl_mld_can_activate_links(struct ieee80211_hw *hw, 2420 struct ieee80211_vif *vif, 2421 u16 desired_links) 2422 { 2423 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2424 int n_links = hweight16(desired_links); 2425 2426 /* Check if HW supports the wanted number of links */ 2427 return n_links <= iwl_mld_max_active_links(mld, vif); 2428 } 2429 2430 static int 2431 iwl_mld_change_vif_links(struct ieee80211_hw *hw, 2432 struct ieee80211_vif *vif, 2433 u16 old_links, u16 new_links, 2434 struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS]) 2435 { 2436 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2437 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2438 struct ieee80211_bss_conf *link_conf; 2439 u16 removed = old_links & ~new_links; 2440 u16 added = new_links & ~old_links; 2441 int err; 2442 2443 lockdep_assert_wiphy(mld->wiphy); 2444 2445 /* 2446 * No bits designate non-MLO mode. We can handle MLO exit/enter by 2447 * simply mapping that to link ID zero internally. 2448 * Note that mac80211 does such a non-MLO to MLO switch during restart 2449 * if it was in MLO before. In that case, we do not have a link to 2450 * remove. 2451 */ 2452 if (old_links == 0 && !mld->fw_status.in_hw_restart) 2453 removed |= BIT(0); 2454 2455 if (new_links == 0) 2456 added |= BIT(0); 2457 2458 for (int i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) { 2459 if (removed & BIT(i)) 2460 iwl_mld_remove_link(mld, old[i]); 2461 } 2462 2463 for (int i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) { 2464 if (added & BIT(i)) { 2465 link_conf = link_conf_dereference_protected(vif, i); 2466 if (WARN_ON(!link_conf)) 2467 return -EINVAL; 2468 2469 err = iwl_mld_add_link(mld, link_conf); 2470 if (err) 2471 goto remove_added_links; 2472 } 2473 } 2474 2475 /* 2476 * Ensure we always have a valid primary_link. When using multiple 2477 * links the proper value is set in assign_vif_chanctx. 2478 */ 2479 mld_vif->emlsr.primary = new_links ? __ffs(new_links) : 0; 2480 2481 /* 2482 * Special MLO restart case. We did not have a link when the interface 2483 * was added, so do the power configuration now. 2484 */ 2485 if (old_links == 0 && mld->fw_status.in_hw_restart) 2486 iwl_mld_update_mac_power(mld, vif, false); 2487 2488 return 0; 2489 2490 remove_added_links: 2491 for (int i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) { 2492 if (!(added & BIT(i))) 2493 continue; 2494 2495 link_conf = link_conf_dereference_protected(vif, i); 2496 if (!link_conf || !iwl_mld_link_from_mac80211(link_conf)) 2497 continue; 2498 2499 iwl_mld_remove_link(mld, link_conf); 2500 } 2501 2502 return err; 2503 } 2504 2505 static int iwl_mld_change_sta_links(struct ieee80211_hw *hw, 2506 struct ieee80211_vif *vif, 2507 struct ieee80211_sta *sta, 2508 u16 old_links, u16 new_links) 2509 { 2510 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2511 2512 return iwl_mld_update_link_stas(mld, vif, sta, old_links, new_links); 2513 } 2514 2515 static int iwl_mld_mac80211_join_ibss(struct ieee80211_hw *hw, 2516 struct ieee80211_vif *vif) 2517 { 2518 return iwl_mld_start_ap_ibss(hw, vif, &vif->bss_conf); 2519 } 2520 2521 static void iwl_mld_mac80211_leave_ibss(struct ieee80211_hw *hw, 2522 struct ieee80211_vif *vif) 2523 { 2524 return iwl_mld_stop_ap_ibss(hw, vif, &vif->bss_conf); 2525 } 2526 2527 static int iwl_mld_mac80211_tx_last_beacon(struct ieee80211_hw *hw) 2528 { 2529 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2530 2531 return mld->ibss_manager; 2532 } 2533 2534 #define IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS_TIMEOUT (5 * HZ) 2535 2536 static void iwl_mld_vif_iter_emlsr_block_tmp_non_bss(void *_data, u8 *mac, 2537 struct ieee80211_vif *vif) 2538 { 2539 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2540 int ret; 2541 2542 if (!iwl_mld_vif_has_emlsr_cap(vif)) 2543 return; 2544 2545 ret = iwl_mld_block_emlsr_sync(mld_vif->mld, vif, 2546 IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS, 2547 iwl_mld_get_primary_link(vif)); 2548 if (ret) 2549 return; 2550 2551 wiphy_delayed_work_queue(mld_vif->mld->wiphy, 2552 &mld_vif->emlsr.tmp_non_bss_done_wk, 2553 IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS_TIMEOUT); 2554 } 2555 2556 static void iwl_mld_prep_add_interface(struct ieee80211_hw *hw, 2557 enum nl80211_iftype type) 2558 { 2559 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2560 2561 IWL_DEBUG_MAC80211(mld, "prep_add_interface: type=%u\n", type); 2562 2563 if (!(type == NL80211_IFTYPE_AP || 2564 type == NL80211_IFTYPE_P2P_GO || 2565 type == NL80211_IFTYPE_P2P_CLIENT)) 2566 return; 2567 2568 ieee80211_iterate_active_interfaces_mtx(mld->hw, 2569 IEEE80211_IFACE_ITER_NORMAL, 2570 iwl_mld_vif_iter_emlsr_block_tmp_non_bss, 2571 NULL); 2572 } 2573 2574 static int iwl_mld_set_hw_timestamp(struct ieee80211_hw *hw, 2575 struct ieee80211_vif *vif, 2576 struct cfg80211_set_hw_timestamp *hwts) 2577 { 2578 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2579 u32 protocols = 0; 2580 2581 /* HW timestamping is only supported for a specific station */ 2582 if (!hwts->macaddr) 2583 return -EOPNOTSUPP; 2584 2585 if (hwts->enable) 2586 protocols = 2587 IWL_TIME_SYNC_PROTOCOL_TM | IWL_TIME_SYNC_PROTOCOL_FTM; 2588 2589 return iwl_mld_time_sync_config(mld, hwts->macaddr, protocols); 2590 } 2591 2592 static int iwl_mld_start_pmsr(struct ieee80211_hw *hw, 2593 struct ieee80211_vif *vif, 2594 struct cfg80211_pmsr_request *request) 2595 { 2596 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2597 2598 return iwl_mld_ftm_start(mld, vif, request); 2599 } 2600 2601 const struct ieee80211_ops iwl_mld_hw_ops = { 2602 .tx = iwl_mld_mac80211_tx, 2603 .start = iwl_mld_mac80211_start, 2604 .stop = iwl_mld_mac80211_stop, 2605 .config = iwl_mld_mac80211_config, 2606 .add_interface = iwl_mld_mac80211_add_interface, 2607 .remove_interface = iwl_mld_mac80211_remove_interface, 2608 .conf_tx = iwl_mld_mac80211_conf_tx, 2609 .prepare_multicast = iwl_mld_mac80211_prepare_multicast, 2610 .configure_filter = iwl_mld_mac80211_configure_filter, 2611 .reconfig_complete = iwl_mld_mac80211_reconfig_complete, 2612 .wake_tx_queue = iwl_mld_mac80211_wake_tx_queue, 2613 .add_chanctx = iwl_mld_add_chanctx, 2614 .remove_chanctx = iwl_mld_remove_chanctx, 2615 .change_chanctx = iwl_mld_change_chanctx, 2616 .assign_vif_chanctx = iwl_mld_assign_vif_chanctx, 2617 .unassign_vif_chanctx = iwl_mld_unassign_vif_chanctx, 2618 .set_rts_threshold = iwl_mld_mac80211_set_rts_threshold, 2619 .link_info_changed = iwl_mld_mac80211_link_info_changed, 2620 .vif_cfg_changed = iwl_mld_mac80211_vif_cfg_changed, 2621 .set_key = iwl_mld_mac80211_set_key, 2622 .hw_scan = iwl_mld_mac80211_hw_scan, 2623 .cancel_hw_scan = iwl_mld_mac80211_cancel_hw_scan, 2624 .sched_scan_start = iwl_mld_mac80211_sched_scan_start, 2625 .sched_scan_stop = iwl_mld_mac80211_sched_scan_stop, 2626 .mgd_prepare_tx = iwl_mld_mac80211_mgd_prepare_tx, 2627 .mgd_complete_tx = iwl_mld_mac_mgd_complete_tx, 2628 .sta_state = iwl_mld_mac80211_sta_state, 2629 .sta_statistics = iwl_mld_mac80211_sta_statistics, 2630 .flush = iwl_mld_mac80211_flush, 2631 .flush_sta = iwl_mld_mac80211_flush_sta, 2632 .ampdu_action = iwl_mld_mac80211_ampdu_action, 2633 .can_aggregate_in_amsdu = iwl_mld_mac80211_can_aggregate, 2634 .sync_rx_queues = iwl_mld_mac80211_sync_rx_queues, 2635 .link_sta_rc_update = iwl_mld_sta_rc_update, 2636 .start_ap = iwl_mld_start_ap_ibss, 2637 .stop_ap = iwl_mld_stop_ap_ibss, 2638 .pre_channel_switch = iwl_mld_pre_channel_switch, 2639 .channel_switch = iwl_mld_channel_switch, 2640 .post_channel_switch = iwl_mld_post_channel_switch, 2641 .abort_channel_switch = iwl_mld_abort_channel_switch, 2642 .switch_vif_chanctx = iwl_mld_switch_vif_chanctx, 2643 .sta_pre_rcu_remove = iwl_mld_sta_pre_rcu_remove, 2644 .remain_on_channel = iwl_mld_start_roc, 2645 .cancel_remain_on_channel = iwl_mld_cancel_roc, 2646 .can_activate_links = iwl_mld_can_activate_links, 2647 .change_vif_links = iwl_mld_change_vif_links, 2648 .change_sta_links = iwl_mld_change_sta_links, 2649 #ifdef CONFIG_PM_SLEEP 2650 .suspend = iwl_mld_suspend, 2651 .resume = iwl_mld_resume, 2652 .set_wakeup = iwl_mld_set_wakeup, 2653 .set_rekey_data = iwl_mld_set_rekey_data, 2654 #if IS_ENABLED(CONFIG_IPV6) 2655 .ipv6_addr_change = iwl_mld_ipv6_addr_change, 2656 #endif /* IS_ENABLED(CONFIG_IPV6) */ 2657 #endif /* CONFIG_PM_SLEEP */ 2658 #ifdef CONFIG_IWLWIFI_DEBUGFS 2659 .vif_add_debugfs = iwl_mld_add_vif_debugfs, 2660 .link_add_debugfs = iwl_mld_add_link_debugfs, 2661 .link_sta_add_debugfs = iwl_mld_add_link_sta_debugfs, 2662 #endif 2663 .mgd_protect_tdls_discover = iwl_mld_mac80211_mgd_protect_tdls_discover, 2664 .join_ibss = iwl_mld_mac80211_join_ibss, 2665 .leave_ibss = iwl_mld_mac80211_leave_ibss, 2666 .tx_last_beacon = iwl_mld_mac80211_tx_last_beacon, 2667 .prep_add_interface = iwl_mld_prep_add_interface, 2668 .set_hw_timestamp = iwl_mld_set_hw_timestamp, 2669 .start_pmsr = iwl_mld_start_pmsr, 2670 }; 2671