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 if (changes & BSS_CHANGED_BANDWIDTH) 1193 iwl_mld_emlsr_check_equal_bw(mld, vif, link_conf); 1194 } 1195 1196 static int iwl_mld_update_mu_groups(struct iwl_mld *mld, 1197 struct ieee80211_bss_conf *link_conf) 1198 { 1199 struct iwl_mu_group_mgmt_cmd cmd = {}; 1200 1201 BUILD_BUG_ON(sizeof(cmd.membership_status) != 1202 sizeof(link_conf->mu_group.membership)); 1203 BUILD_BUG_ON(sizeof(cmd.user_position) != 1204 sizeof(link_conf->mu_group.position)); 1205 1206 memcpy(cmd.membership_status, link_conf->mu_group.membership, 1207 WLAN_MEMBERSHIP_LEN); 1208 memcpy(cmd.user_position, link_conf->mu_group.position, 1209 WLAN_USER_POSITION_LEN); 1210 1211 return iwl_mld_send_cmd_pdu(mld, 1212 WIDE_ID(DATA_PATH_GROUP, 1213 UPDATE_MU_GROUPS_CMD), 1214 &cmd); 1215 } 1216 1217 static void 1218 iwl_mld_mac80211_link_info_changed(struct ieee80211_hw *hw, 1219 struct ieee80211_vif *vif, 1220 struct ieee80211_bss_conf *link_conf, 1221 u64 changes) 1222 { 1223 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1224 1225 switch (vif->type) { 1226 case NL80211_IFTYPE_STATION: 1227 iwl_mld_mac80211_link_info_changed_sta(mld, vif, link_conf, 1228 changes); 1229 break; 1230 case NL80211_IFTYPE_AP: 1231 case NL80211_IFTYPE_ADHOC: 1232 iwl_mld_link_info_changed_ap_ibss(mld, vif, link_conf, 1233 changes); 1234 break; 1235 case NL80211_IFTYPE_MONITOR: 1236 /* The firmware tracks this on its own in STATION mode, but 1237 * obviously not in sniffer mode. 1238 */ 1239 if (changes & BSS_CHANGED_MU_GROUPS) 1240 iwl_mld_update_mu_groups(mld, link_conf); 1241 break; 1242 default: 1243 /* shouldn't happen */ 1244 WARN_ON_ONCE(1); 1245 } 1246 1247 /* We now know our BSSID, we can configure the MAC context with 1248 * eht_support if needed. 1249 */ 1250 if (changes & BSS_CHANGED_BSSID) 1251 iwl_mld_mac_fw_action(mld, vif, FW_CTXT_ACTION_MODIFY); 1252 1253 if (changes & BSS_CHANGED_TXPOWER) 1254 iwl_mld_set_tx_power(mld, link_conf, link_conf->txpower); 1255 } 1256 1257 static void 1258 iwl_mld_smps_wa(struct iwl_mld *mld, struct ieee80211_vif *vif, bool enable) 1259 { 1260 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1261 1262 /* Send the device-level power commands since the 1263 * firmware checks the POWER_TABLE_CMD's POWER_SAVE_EN bit to 1264 * determine SMPS mode. 1265 */ 1266 if (mld_vif->ps_disabled == !enable) 1267 return; 1268 1269 mld_vif->ps_disabled = !enable; 1270 1271 iwl_mld_update_device_power(mld, false); 1272 } 1273 1274 static 1275 void iwl_mld_mac80211_vif_cfg_changed(struct ieee80211_hw *hw, 1276 struct ieee80211_vif *vif, 1277 u64 changes) 1278 { 1279 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1280 int ret; 1281 1282 lockdep_assert_wiphy(mld->wiphy); 1283 1284 if (vif->type != NL80211_IFTYPE_STATION) 1285 return; 1286 1287 if (changes & BSS_CHANGED_ASSOC) { 1288 ret = iwl_mld_mac_fw_action(mld, vif, FW_CTXT_ACTION_MODIFY); 1289 if (ret) 1290 IWL_ERR(mld, "failed to update context\n"); 1291 1292 if (vif->cfg.assoc) { 1293 /* Clear statistics to get clean beacon counter, and 1294 * ask for periodic statistics, as they are needed for 1295 * link selection and RX OMI decisions. 1296 */ 1297 iwl_mld_clear_stats_in_fw(mld); 1298 iwl_mld_request_periodic_fw_stats(mld, true); 1299 1300 iwl_mld_set_vif_associated(mld, vif); 1301 } else { 1302 iwl_mld_request_periodic_fw_stats(mld, false); 1303 } 1304 } 1305 1306 if (changes & BSS_CHANGED_PS) { 1307 iwl_mld_smps_wa(mld, vif, vif->cfg.ps); 1308 iwl_mld_update_mac_power(mld, vif, false); 1309 } 1310 1311 /* TODO: task=MLO BSS_CHANGED_MLD_VALID_LINKS/CHANGED_MLD_TTLM */ 1312 } 1313 1314 static int 1315 iwl_mld_mac80211_hw_scan(struct ieee80211_hw *hw, 1316 struct ieee80211_vif *vif, 1317 struct ieee80211_scan_request *hw_req) 1318 { 1319 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1320 1321 if (WARN_ON(!hw_req->req.n_channels || 1322 hw_req->req.n_channels > 1323 mld->fw->ucode_capa.n_scan_channels)) 1324 return -EINVAL; 1325 1326 return iwl_mld_regular_scan_start(mld, vif, &hw_req->req, &hw_req->ies); 1327 } 1328 1329 static void 1330 iwl_mld_mac80211_cancel_hw_scan(struct ieee80211_hw *hw, 1331 struct ieee80211_vif *vif) 1332 { 1333 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1334 1335 /* Due to a race condition, it's possible that mac80211 asks 1336 * us to stop a hw_scan when it's already stopped. This can 1337 * happen, for instance, if we stopped the scan ourselves, 1338 * called ieee80211_scan_completed() and the userspace called 1339 * cancel scan before ieee80211_scan_work() could run. 1340 * To handle that, simply return if the scan is not running. 1341 */ 1342 if (mld->scan.status & IWL_MLD_SCAN_REGULAR) 1343 iwl_mld_scan_stop(mld, IWL_MLD_SCAN_REGULAR, true); 1344 } 1345 1346 static int 1347 iwl_mld_mac80211_sched_scan_start(struct ieee80211_hw *hw, 1348 struct ieee80211_vif *vif, 1349 struct cfg80211_sched_scan_request *req, 1350 struct ieee80211_scan_ies *ies) 1351 { 1352 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1353 1354 return iwl_mld_sched_scan_start(mld, vif, req, ies, IWL_MLD_SCAN_SCHED); 1355 } 1356 1357 static int 1358 iwl_mld_mac80211_sched_scan_stop(struct ieee80211_hw *hw, 1359 struct ieee80211_vif *vif) 1360 { 1361 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1362 1363 /* Due to a race condition, it's possible that mac80211 asks 1364 * us to stop a sched_scan when it's already stopped. This 1365 * can happen, for instance, if we stopped the scan ourselves, 1366 * called ieee80211_sched_scan_stopped() and the userspace called 1367 * stop sched scan before ieee80211_sched_scan_stopped_work() 1368 * could run. To handle this, simply return if the scan is 1369 * not running. 1370 */ 1371 if (!(mld->scan.status & IWL_MLD_SCAN_SCHED)) 1372 return 0; 1373 1374 return iwl_mld_scan_stop(mld, IWL_MLD_SCAN_SCHED, false); 1375 } 1376 1377 static void 1378 iwl_mld_restart_complete_vif(void *data, u8 *mac, struct ieee80211_vif *vif) 1379 { 1380 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1381 struct ieee80211_bss_conf *link_conf; 1382 struct iwl_mld *mld = data; 1383 int link_id; 1384 1385 for_each_vif_active_link(vif, link_conf, link_id) { 1386 enum ieee80211_sta_rx_bandwidth bw; 1387 struct iwl_mld_link *mld_link; 1388 1389 mld_link = wiphy_dereference(mld->wiphy, 1390 mld_vif->link[link_id]); 1391 1392 if (WARN_ON_ONCE(!mld_link)) 1393 continue; 1394 1395 bw = mld_link->rx_omi.bw_in_progress; 1396 if (bw) 1397 iwl_mld_change_link_omi_bw(mld, link_conf, bw); 1398 } 1399 } 1400 1401 static void 1402 iwl_mld_mac80211_reconfig_complete(struct ieee80211_hw *hw, 1403 enum ieee80211_reconfig_type reconfig_type) 1404 { 1405 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1406 1407 switch (reconfig_type) { 1408 case IEEE80211_RECONFIG_TYPE_RESTART: 1409 mld->fw_status.in_hw_restart = false; 1410 iwl_mld_send_recovery_cmd(mld, ERROR_RECOVERY_END_OF_RECOVERY); 1411 1412 ieee80211_iterate_interfaces(mld->hw, 1413 IEEE80211_IFACE_ITER_NORMAL, 1414 iwl_mld_restart_complete_vif, mld); 1415 1416 iwl_trans_finish_sw_reset(mld->trans); 1417 /* no need to lock, adding in parallel would schedule too */ 1418 if (!list_empty(&mld->txqs_to_add)) 1419 wiphy_work_queue(mld->wiphy, &mld->add_txqs_wk); 1420 1421 IWL_INFO(mld, "restart completed\n"); 1422 break; 1423 case IEEE80211_RECONFIG_TYPE_SUSPEND: 1424 break; 1425 } 1426 } 1427 1428 static 1429 void iwl_mld_mac80211_mgd_prepare_tx(struct ieee80211_hw *hw, 1430 struct ieee80211_vif *vif, 1431 struct ieee80211_prep_tx_info *info) 1432 { 1433 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1434 u32 duration = IWL_MLD_SESSION_PROTECTION_ASSOC_TIME_MS; 1435 1436 /* After a successful association the connection is etalibeshed 1437 * and we can rely on the quota to send the disassociation frame. 1438 */ 1439 if (info->was_assoc) 1440 return; 1441 1442 if (info->duration > duration) 1443 duration = info->duration; 1444 1445 iwl_mld_schedule_session_protection(mld, vif, duration, 1446 IWL_MLD_SESSION_PROTECTION_MIN_TIME_MS, 1447 info->link_id); 1448 } 1449 1450 static 1451 void iwl_mld_mac_mgd_complete_tx(struct ieee80211_hw *hw, 1452 struct ieee80211_vif *vif, 1453 struct ieee80211_prep_tx_info *info) 1454 { 1455 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1456 1457 /* Successful authentication is the only case that requires to let 1458 * the session protection go. We'll need it for the upcoming 1459 * association. For all the other cases, we need to cancel the session 1460 * protection. 1461 * After successful association the connection is established and 1462 * further mgd tx can rely on the quota. 1463 */ 1464 if (info->success && info->subtype == IEEE80211_STYPE_AUTH) 1465 return; 1466 1467 /* The firmware will be on medium after we configure the vif as 1468 * associated. Removing the session protection allows the firmware 1469 * to stop being on medium. In order to ensure the continuity of our 1470 * presence on medium, we need first to configure the vif as associated 1471 * and only then, remove the session protection. 1472 * Currently, mac80211 calls vif_cfg_changed() first and then, 1473 * drv_mgd_complete_tx(). Ensure that this assumption stays true by 1474 * a warning. 1475 */ 1476 WARN_ON(info->success && 1477 (info->subtype == IEEE80211_STYPE_ASSOC_REQ || 1478 info->subtype == IEEE80211_STYPE_REASSOC_REQ) && 1479 !vif->cfg.assoc); 1480 1481 iwl_mld_cancel_session_protection(mld, vif, info->link_id); 1482 } 1483 1484 static int 1485 iwl_mld_mac80211_conf_tx(struct ieee80211_hw *hw, 1486 struct ieee80211_vif *vif, 1487 unsigned int link_id, u16 ac, 1488 const struct ieee80211_tx_queue_params *params) 1489 { 1490 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1491 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1492 struct iwl_mld_link *link; 1493 1494 lockdep_assert_wiphy(mld->wiphy); 1495 1496 link = iwl_mld_link_dereference_check(mld_vif, link_id); 1497 if (!link) 1498 return -EINVAL; 1499 1500 link->queue_params[ac] = *params; 1501 1502 /* No need to update right away, we'll get BSS_CHANGED_QOS 1503 * The exception is P2P_DEVICE interface which needs immediate update. 1504 */ 1505 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 1506 iwl_mld_change_link_in_fw(mld, &vif->bss_conf, 1507 LINK_CONTEXT_MODIFY_QOS_PARAMS); 1508 1509 return 0; 1510 } 1511 1512 static void iwl_mld_set_uapsd(struct iwl_mld *mld, struct ieee80211_vif *vif) 1513 { 1514 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 1515 1516 if (vif->type != NL80211_IFTYPE_STATION) 1517 return; 1518 1519 if (vif->p2p && 1520 !(iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_P2P_CLIENT)) 1521 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 1522 1523 if (!vif->p2p && 1524 !(iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) 1525 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 1526 } 1527 1528 int iwl_mld_tdls_sta_count(struct iwl_mld *mld) 1529 { 1530 int count = 0; 1531 1532 lockdep_assert_wiphy(mld->wiphy); 1533 1534 for (int i = 0; i < mld->fw->ucode_capa.num_stations; i++) { 1535 struct ieee80211_link_sta *link_sta; 1536 1537 link_sta = wiphy_dereference(mld->wiphy, 1538 mld->fw_id_to_link_sta[i]); 1539 if (IS_ERR_OR_NULL(link_sta)) 1540 continue; 1541 1542 if (!link_sta->sta->tdls) 1543 continue; 1544 1545 count++; 1546 } 1547 1548 return count; 1549 } 1550 1551 static void iwl_mld_check_he_obss_narrow_bw_ru_iter(struct wiphy *wiphy, 1552 struct cfg80211_bss *bss, 1553 void *_data) 1554 { 1555 bool *tolerated = _data; 1556 const struct cfg80211_bss_ies *ies; 1557 const struct element *elem; 1558 1559 rcu_read_lock(); 1560 ies = rcu_dereference(bss->ies); 1561 elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, ies->data, 1562 ies->len); 1563 1564 if (!elem || elem->datalen < 10 || 1565 !(elem->data[10] & 1566 WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT)) { 1567 *tolerated = false; 1568 } 1569 rcu_read_unlock(); 1570 } 1571 1572 static void 1573 iwl_mld_check_he_obss_narrow_bw_ru(struct iwl_mld *mld, 1574 struct iwl_mld_link *mld_link, 1575 struct ieee80211_bss_conf *link_conf) 1576 { 1577 bool tolerated = true; 1578 1579 if (WARN_ON_ONCE(!link_conf->chanreq.oper.chan)) 1580 return; 1581 1582 if (!(link_conf->chanreq.oper.chan->flags & IEEE80211_CHAN_RADAR)) { 1583 mld_link->he_ru_2mhz_block = false; 1584 return; 1585 } 1586 1587 cfg80211_bss_iter(mld->wiphy, &link_conf->chanreq.oper, 1588 iwl_mld_check_he_obss_narrow_bw_ru_iter, &tolerated); 1589 1590 /* If there is at least one AP on radar channel that cannot 1591 * tolerate 26-tone RU UL OFDMA transmissions using HE TB PPDU. 1592 */ 1593 mld_link->he_ru_2mhz_block = !tolerated; 1594 } 1595 1596 static void iwl_mld_link_set_2mhz_block(struct iwl_mld *mld, 1597 struct ieee80211_vif *vif, 1598 struct ieee80211_sta *sta) 1599 { 1600 struct ieee80211_link_sta *link_sta; 1601 unsigned int link_id; 1602 1603 for_each_sta_active_link(vif, sta, link_sta, link_id) { 1604 struct ieee80211_bss_conf *link_conf = 1605 link_conf_dereference_protected(vif, link_id); 1606 struct iwl_mld_link *mld_link = 1607 iwl_mld_link_from_mac80211(link_conf); 1608 1609 if (WARN_ON(!link_conf || !mld_link)) 1610 continue; 1611 1612 if (link_sta->he_cap.has_he) 1613 iwl_mld_check_he_obss_narrow_bw_ru(mld, mld_link, 1614 link_conf); 1615 } 1616 } 1617 1618 static int iwl_mld_move_sta_state_up(struct iwl_mld *mld, 1619 struct ieee80211_vif *vif, 1620 struct ieee80211_sta *sta, 1621 enum ieee80211_sta_state old_state, 1622 enum ieee80211_sta_state new_state) 1623 { 1624 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1625 int tdls_count = 0; 1626 int ret; 1627 1628 if (old_state == IEEE80211_STA_NOTEXIST && 1629 new_state == IEEE80211_STA_NONE) { 1630 if (sta->tdls) { 1631 if (vif->p2p || hweight8(mld->used_phy_ids) != 1) 1632 return -EBUSY; 1633 1634 tdls_count = iwl_mld_tdls_sta_count(mld); 1635 if (tdls_count >= IWL_TDLS_STA_COUNT) 1636 return -EBUSY; 1637 } 1638 1639 /* 1640 * If this is the first STA (i.e. the AP) it won't do 1641 * anything, otherwise must leave for any new STA on 1642 * any other interface, or for TDLS, etc. 1643 * Need to call this _before_ adding the STA so it can 1644 * look up the one STA to use to ask mac80211 to leave 1645 * OMI; in the unlikely event that adding the new STA 1646 * then fails we'll just re-enter OMI later (via the 1647 * statistics notification handling.) 1648 */ 1649 iwl_mld_leave_omi_bw_reduction(mld); 1650 1651 ret = iwl_mld_add_sta(mld, sta, vif, STATION_TYPE_PEER); 1652 if (ret) 1653 return ret; 1654 1655 /* just added first TDLS STA, so disable PM */ 1656 if (sta->tdls && tdls_count == 0) 1657 iwl_mld_update_mac_power(mld, vif, false); 1658 1659 if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls) 1660 mld_vif->ap_sta = sta; 1661 1662 /* Initialize TLC here already - this really tells 1663 * the firmware only what the supported legacy rates are 1664 * (may be) since it's initialized already from what the 1665 * AP advertised in the beacon/probe response. This will 1666 * allow the firmware to send auth/assoc frames with one 1667 * of the supported rates already, rather than having to 1668 * use a mandatory rate. 1669 * If we're the AP, we'll just assume mandatory rates at 1670 * this point, but we know nothing about the STA anyway. 1671 */ 1672 iwl_mld_config_tlc(mld, vif, sta); 1673 1674 return ret; 1675 } else if (old_state == IEEE80211_STA_NONE && 1676 new_state == IEEE80211_STA_AUTH) { 1677 iwl_mld_set_uapsd(mld, vif); 1678 return 0; 1679 } else if (old_state == IEEE80211_STA_AUTH && 1680 new_state == IEEE80211_STA_ASSOC) { 1681 ret = iwl_mld_update_all_link_stations(mld, sta); 1682 1683 if (vif->type == NL80211_IFTYPE_STATION) 1684 iwl_mld_link_set_2mhz_block(mld, vif, sta); 1685 /* Now the link_sta's capabilities are set, update the FW */ 1686 iwl_mld_config_tlc(mld, vif, sta); 1687 1688 if (vif->type == NL80211_IFTYPE_AP) { 1689 /* Update MAC_CFG_FILTER_ACCEPT_BEACON if at least 1690 * one sta is associated 1691 */ 1692 if (++mld_vif->num_associated_stas == 1) 1693 ret = iwl_mld_mac_fw_action(mld, vif, 1694 FW_CTXT_ACTION_MODIFY); 1695 } 1696 1697 return ret; 1698 } else if (old_state == IEEE80211_STA_ASSOC && 1699 new_state == IEEE80211_STA_AUTHORIZED) { 1700 ret = 0; 1701 1702 if (!sta->tdls) { 1703 mld_vif->authorized = true; 1704 1705 /* Ensure any block due to a non-BSS link is synced */ 1706 iwl_mld_emlsr_check_non_bss_block(mld, 0); 1707 1708 /* Block EMLSR until a certain throughput it reached */ 1709 if (!mld->fw_status.in_hw_restart && 1710 IWL_MLD_ENTER_EMLSR_TPT_THRESH > 0) 1711 iwl_mld_block_emlsr(mld_vif->mld, vif, 1712 IWL_MLD_EMLSR_BLOCKED_TPT, 1713 0); 1714 1715 /* Wait for the FW to send a recommendation */ 1716 iwl_mld_block_emlsr(mld, vif, 1717 IWL_MLD_EMLSR_BLOCKED_FW, 0); 1718 1719 /* clear COEX_HIGH_PRIORITY_ENABLE */ 1720 ret = iwl_mld_mac_fw_action(mld, vif, 1721 FW_CTXT_ACTION_MODIFY); 1722 if (ret) 1723 return ret; 1724 iwl_mld_smps_wa(mld, vif, vif->cfg.ps); 1725 } 1726 1727 /* MFP is set by default before the station is authorized. 1728 * Clear it here in case it's not used. 1729 */ 1730 if (!sta->mfp) 1731 ret = iwl_mld_update_all_link_stations(mld, sta); 1732 1733 /* We can use wide bandwidth now, not only 20 MHz */ 1734 iwl_mld_config_tlc(mld, vif, sta); 1735 1736 return ret; 1737 } else { 1738 return -EINVAL; 1739 } 1740 } 1741 1742 static int iwl_mld_move_sta_state_down(struct iwl_mld *mld, 1743 struct ieee80211_vif *vif, 1744 struct ieee80211_sta *sta, 1745 enum ieee80211_sta_state old_state, 1746 enum ieee80211_sta_state new_state) 1747 { 1748 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1749 1750 if (old_state == IEEE80211_STA_AUTHORIZED && 1751 new_state == IEEE80211_STA_ASSOC) { 1752 if (!sta->tdls) { 1753 mld_vif->authorized = false; 1754 1755 memset(&mld_vif->emlsr.zeroed_on_not_authorized, 0, 1756 sizeof(mld_vif->emlsr.zeroed_on_not_authorized)); 1757 1758 wiphy_delayed_work_cancel(mld->wiphy, 1759 &mld_vif->emlsr.prevent_done_wk); 1760 wiphy_delayed_work_cancel(mld->wiphy, 1761 &mld_vif->emlsr.tmp_non_bss_done_wk); 1762 wiphy_work_cancel(mld->wiphy, &mld_vif->emlsr.unblock_tpt_wk); 1763 wiphy_delayed_work_cancel(mld->wiphy, 1764 &mld_vif->emlsr.check_tpt_wk); 1765 1766 iwl_mld_reset_cca_40mhz_workaround(mld, vif); 1767 iwl_mld_smps_wa(mld, vif, true); 1768 } 1769 1770 /* once we move into assoc state, need to update the FW to 1771 * stop using wide bandwidth 1772 */ 1773 iwl_mld_config_tlc(mld, vif, sta); 1774 } else if (old_state == IEEE80211_STA_ASSOC && 1775 new_state == IEEE80211_STA_AUTH) { 1776 if (vif->type == NL80211_IFTYPE_AP && 1777 !WARN_ON(!mld_vif->num_associated_stas)) { 1778 /* Update MAC_CFG_FILTER_ACCEPT_BEACON if the last sta 1779 * is disassociating 1780 */ 1781 if (--mld_vif->num_associated_stas == 0) 1782 iwl_mld_mac_fw_action(mld, vif, 1783 FW_CTXT_ACTION_MODIFY); 1784 } 1785 } else if (old_state == IEEE80211_STA_AUTH && 1786 new_state == IEEE80211_STA_NONE) { 1787 /* nothing */ 1788 } else if (old_state == IEEE80211_STA_NONE && 1789 new_state == IEEE80211_STA_NOTEXIST) { 1790 iwl_mld_remove_sta(mld, sta); 1791 1792 if (sta->tdls && iwl_mld_tdls_sta_count(mld) == 0) { 1793 /* just removed last TDLS STA, so enable PM */ 1794 iwl_mld_update_mac_power(mld, vif, false); 1795 } 1796 } else { 1797 return -EINVAL; 1798 } 1799 return 0; 1800 } 1801 1802 static int iwl_mld_mac80211_sta_state(struct ieee80211_hw *hw, 1803 struct ieee80211_vif *vif, 1804 struct ieee80211_sta *sta, 1805 enum ieee80211_sta_state old_state, 1806 enum ieee80211_sta_state new_state) 1807 { 1808 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1809 struct iwl_mld_sta *mld_sta = iwl_mld_sta_from_mac80211(sta); 1810 1811 IWL_DEBUG_MAC80211(mld, "station %pM state change %d->%d\n", 1812 sta->addr, old_state, new_state); 1813 1814 mld_sta->sta_state = new_state; 1815 1816 if (old_state < new_state) 1817 return iwl_mld_move_sta_state_up(mld, vif, sta, old_state, 1818 new_state); 1819 else 1820 return iwl_mld_move_sta_state_down(mld, vif, sta, old_state, 1821 new_state); 1822 } 1823 1824 static void iwl_mld_mac80211_flush(struct ieee80211_hw *hw, 1825 struct ieee80211_vif *vif, 1826 u32 queues, bool drop) 1827 { 1828 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1829 1830 /* Make sure we're done with the deferred traffic before flushing */ 1831 iwl_mld_add_txq_list(mld); 1832 1833 for (int i = 0; i < mld->fw->ucode_capa.num_stations; i++) { 1834 struct ieee80211_link_sta *link_sta = 1835 wiphy_dereference(mld->wiphy, 1836 mld->fw_id_to_link_sta[i]); 1837 1838 if (IS_ERR_OR_NULL(link_sta)) 1839 continue; 1840 1841 /* Check that the sta belongs to the given vif */ 1842 if (vif && vif != iwl_mld_sta_from_mac80211(link_sta->sta)->vif) 1843 continue; 1844 1845 if (drop) 1846 iwl_mld_flush_sta_txqs(mld, link_sta->sta); 1847 else 1848 iwl_mld_wait_sta_txqs_empty(mld, link_sta->sta); 1849 } 1850 } 1851 1852 static void iwl_mld_mac80211_flush_sta(struct ieee80211_hw *hw, 1853 struct ieee80211_vif *vif, 1854 struct ieee80211_sta *sta) 1855 { 1856 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1857 1858 iwl_mld_flush_sta_txqs(mld, sta); 1859 } 1860 1861 static int 1862 iwl_mld_mac80211_ampdu_action(struct ieee80211_hw *hw, 1863 struct ieee80211_vif *vif, 1864 struct ieee80211_ampdu_params *params) 1865 { 1866 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1867 struct ieee80211_sta *sta = params->sta; 1868 enum ieee80211_ampdu_mlme_action action = params->action; 1869 u16 tid = params->tid; 1870 u16 ssn = params->ssn; 1871 u16 buf_size = params->buf_size; 1872 u16 timeout = params->timeout; 1873 int ret; 1874 1875 IWL_DEBUG_HT(mld, "A-MPDU action on addr %pM tid: %d action: %d\n", 1876 sta->addr, tid, action); 1877 1878 switch (action) { 1879 case IEEE80211_AMPDU_RX_START: 1880 ret = iwl_mld_ampdu_rx_start(mld, sta, tid, ssn, buf_size, 1881 timeout); 1882 break; 1883 case IEEE80211_AMPDU_RX_STOP: 1884 ret = iwl_mld_ampdu_rx_stop(mld, sta, tid); 1885 break; 1886 default: 1887 /* The mac80211 TX_AMPDU_SETUP_IN_HW flag is set for all 1888 * devices, since all support TX A-MPDU offload in hardware. 1889 * Therefore, no TX action should be requested here. 1890 */ 1891 WARN_ON_ONCE(1); 1892 return -EINVAL; 1893 } 1894 1895 return ret; 1896 } 1897 1898 static bool iwl_mld_can_hw_csum(struct sk_buff *skb) 1899 { 1900 u8 protocol = ip_hdr(skb)->protocol; 1901 1902 return protocol == IPPROTO_TCP || protocol == IPPROTO_UDP; 1903 } 1904 1905 static bool iwl_mld_mac80211_can_aggregate(struct ieee80211_hw *hw, 1906 struct sk_buff *head, 1907 struct sk_buff *skb) 1908 { 1909 if (!IS_ENABLED(CONFIG_INET)) 1910 return false; 1911 1912 /* For now don't aggregate IPv6 in AMSDU */ 1913 if (skb->protocol != htons(ETH_P_IP)) 1914 return false; 1915 1916 /* Allow aggregation only if both frames have the same HW csum offload 1917 * capability, ensuring consistent HW or SW csum handling in A-MSDU. 1918 */ 1919 return iwl_mld_can_hw_csum(skb) == iwl_mld_can_hw_csum(head); 1920 } 1921 1922 static void iwl_mld_mac80211_sync_rx_queues(struct ieee80211_hw *hw) 1923 { 1924 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1925 1926 iwl_mld_sync_rx_queues(mld, IWL_MLD_RXQ_EMPTY, NULL, 0); 1927 } 1928 1929 static void iwl_mld_sta_rc_update(struct ieee80211_hw *hw, 1930 struct ieee80211_vif *vif, 1931 struct ieee80211_link_sta *link_sta, 1932 u32 changed) 1933 { 1934 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1935 1936 if (changed & (IEEE80211_RC_BW_CHANGED | 1937 IEEE80211_RC_SUPP_RATES_CHANGED | 1938 IEEE80211_RC_NSS_CHANGED)) { 1939 struct ieee80211_bss_conf *link = 1940 link_conf_dereference_check(vif, link_sta->link_id); 1941 1942 if (WARN_ON(!link)) 1943 return; 1944 1945 iwl_mld_config_tlc_link(mld, vif, link, link_sta); 1946 } 1947 } 1948 1949 static void iwl_mld_set_wakeup(struct ieee80211_hw *hw, bool enabled) 1950 { 1951 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1952 1953 device_set_wakeup_enable(mld->trans->dev, enabled); 1954 } 1955 1956 /* Returns 0 on success. 1 if failed to suspend with wowlan: 1957 * If the circumstances didn't satisfy the conditions for suspension 1958 * with wowlan, mac80211 would use the no_wowlan flow. 1959 * If an error had occurred we update the trans status and state here 1960 * and the result will be stopping the FW. 1961 */ 1962 static int 1963 iwl_mld_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1964 { 1965 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1966 int ret; 1967 1968 iwl_fw_runtime_suspend(&mld->fwrt); 1969 1970 ret = iwl_mld_wowlan_suspend(mld, wowlan); 1971 if (ret) { 1972 if (ret < 0) { 1973 mld->trans->state = IWL_TRANS_NO_FW; 1974 set_bit(STATUS_FW_ERROR, &mld->trans->status); 1975 } 1976 return 1; 1977 } 1978 1979 if (iwl_mld_no_wowlan_suspend(mld)) 1980 return 1; 1981 1982 return 0; 1983 } 1984 1985 static int iwl_mld_resume(struct ieee80211_hw *hw) 1986 { 1987 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1988 int ret; 1989 1990 ret = iwl_mld_wowlan_resume(mld); 1991 if (ret) 1992 return ret; 1993 1994 iwl_fw_runtime_resume(&mld->fwrt); 1995 1996 iwl_mld_low_latency_restart(mld); 1997 1998 return 0; 1999 } 2000 2001 static int iwl_mld_alloc_ptk_pn(struct iwl_mld *mld, 2002 struct iwl_mld_sta *mld_sta, 2003 struct ieee80211_key_conf *key, 2004 struct iwl_mld_ptk_pn **ptk_pn) 2005 { 2006 u8 num_rx_queues = mld->trans->num_rx_queues; 2007 int keyidx = key->keyidx; 2008 struct ieee80211_key_seq seq; 2009 2010 if (WARN_ON(keyidx >= ARRAY_SIZE(mld_sta->ptk_pn))) 2011 return -EINVAL; 2012 2013 WARN_ON(rcu_access_pointer(mld_sta->ptk_pn[keyidx])); 2014 *ptk_pn = kzalloc(struct_size(*ptk_pn, q, num_rx_queues), 2015 GFP_KERNEL); 2016 if (!*ptk_pn) 2017 return -ENOMEM; 2018 2019 for (u8 tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 2020 ieee80211_get_key_rx_seq(key, tid, &seq); 2021 for (u8 q = 0; q < num_rx_queues; q++) 2022 memcpy((*ptk_pn)->q[q].pn[tid], seq.ccmp.pn, 2023 IEEE80211_CCMP_PN_LEN); 2024 } 2025 2026 rcu_assign_pointer(mld_sta->ptk_pn[keyidx], *ptk_pn); 2027 2028 return 0; 2029 } 2030 2031 static int iwl_mld_set_key_add(struct iwl_mld *mld, 2032 struct ieee80211_vif *vif, 2033 struct ieee80211_sta *sta, 2034 struct ieee80211_key_conf *key) 2035 { 2036 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2037 struct iwl_mld_sta *mld_sta = 2038 sta ? iwl_mld_sta_from_mac80211(sta) : NULL; 2039 struct iwl_mld_ptk_pn *ptk_pn = NULL; 2040 int keyidx = key->keyidx; 2041 int ret; 2042 2043 /* Will be set to 0 if added successfully */ 2044 key->hw_key_idx = STA_KEY_IDX_INVALID; 2045 2046 switch (key->cipher) { 2047 case WLAN_CIPHER_SUITE_WEP40: 2048 case WLAN_CIPHER_SUITE_WEP104: 2049 IWL_DEBUG_MAC80211(mld, "Use SW encryption for WEP\n"); 2050 return -EOPNOTSUPP; 2051 case WLAN_CIPHER_SUITE_TKIP: 2052 if (vif->type == NL80211_IFTYPE_STATION) { 2053 key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE; 2054 break; 2055 } 2056 IWL_DEBUG_MAC80211(mld, "Use SW encryption for TKIP\n"); 2057 return -EOPNOTSUPP; 2058 case WLAN_CIPHER_SUITE_CCMP: 2059 case WLAN_CIPHER_SUITE_GCMP: 2060 case WLAN_CIPHER_SUITE_GCMP_256: 2061 case WLAN_CIPHER_SUITE_AES_CMAC: 2062 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2063 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2064 break; 2065 default: 2066 return -EOPNOTSUPP; 2067 } 2068 2069 if (vif->type == NL80211_IFTYPE_STATION && 2070 (keyidx == 6 || keyidx == 7)) 2071 rcu_assign_pointer(mld_vif->bigtks[keyidx - 6], key); 2072 2073 /* After exiting from RFKILL, hostapd configures GTK/ITGK before the 2074 * AP is started, but those keys can't be sent to the FW before the 2075 * MCAST/BCAST STAs are added to it (which happens upon AP start). 2076 * Store it here to be sent later when the AP is started. 2077 */ 2078 if ((vif->type == NL80211_IFTYPE_ADHOC || 2079 vif->type == NL80211_IFTYPE_AP) && !sta && 2080 !mld_vif->ap_ibss_active) 2081 return iwl_mld_store_ap_early_key(mld, key, mld_vif); 2082 2083 if (!mld->fw_status.in_hw_restart && mld_sta && 2084 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 2085 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 2086 key->cipher == WLAN_CIPHER_SUITE_GCMP || 2087 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 2088 ret = iwl_mld_alloc_ptk_pn(mld, mld_sta, key, &ptk_pn); 2089 if (ret) 2090 return ret; 2091 } 2092 2093 IWL_DEBUG_MAC80211(mld, "set hwcrypto key (sta:%pM, id:%d)\n", 2094 sta ? sta->addr : NULL, keyidx); 2095 2096 ret = iwl_mld_add_key(mld, vif, sta, key); 2097 if (ret) { 2098 IWL_WARN(mld, "set key failed (%d)\n", ret); 2099 if (ptk_pn) { 2100 RCU_INIT_POINTER(mld_sta->ptk_pn[keyidx], NULL); 2101 kfree(ptk_pn); 2102 } 2103 2104 return -EOPNOTSUPP; 2105 } 2106 2107 return 0; 2108 } 2109 2110 static void iwl_mld_set_key_remove(struct iwl_mld *mld, 2111 struct ieee80211_vif *vif, 2112 struct ieee80211_sta *sta, 2113 struct ieee80211_key_conf *key) 2114 { 2115 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2116 struct iwl_mld_sta *mld_sta = 2117 sta ? iwl_mld_sta_from_mac80211(sta) : NULL; 2118 int keyidx = key->keyidx; 2119 2120 if (vif->type == NL80211_IFTYPE_STATION && 2121 (keyidx == 6 || keyidx == 7)) 2122 RCU_INIT_POINTER(mld_vif->bigtks[keyidx - 6], NULL); 2123 2124 if (mld_sta && key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 2125 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 2126 key->cipher == WLAN_CIPHER_SUITE_GCMP || 2127 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 2128 struct iwl_mld_ptk_pn *ptk_pn; 2129 2130 if (WARN_ON(keyidx >= ARRAY_SIZE(mld_sta->ptk_pn))) 2131 return; 2132 2133 ptk_pn = wiphy_dereference(mld->wiphy, 2134 mld_sta->ptk_pn[keyidx]); 2135 RCU_INIT_POINTER(mld_sta->ptk_pn[keyidx], NULL); 2136 if (!WARN_ON(!ptk_pn)) 2137 kfree_rcu(ptk_pn, rcu_head); 2138 } 2139 2140 /* if this key was stored to be added later to the FW - free it here */ 2141 if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) 2142 iwl_mld_free_ap_early_key(mld, key, mld_vif); 2143 2144 /* We already removed it */ 2145 if (key->hw_key_idx == STA_KEY_IDX_INVALID) 2146 return; 2147 2148 IWL_DEBUG_MAC80211(mld, "disable hwcrypto key\n"); 2149 2150 iwl_mld_remove_key(mld, vif, sta, key); 2151 } 2152 2153 static int iwl_mld_mac80211_set_key(struct ieee80211_hw *hw, 2154 enum set_key_cmd cmd, 2155 struct ieee80211_vif *vif, 2156 struct ieee80211_sta *sta, 2157 struct ieee80211_key_conf *key) 2158 { 2159 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2160 int ret; 2161 2162 switch (cmd) { 2163 case SET_KEY: 2164 ret = iwl_mld_set_key_add(mld, vif, sta, key); 2165 if (ret) 2166 ret = -EOPNOTSUPP; 2167 break; 2168 case DISABLE_KEY: 2169 iwl_mld_set_key_remove(mld, vif, sta, key); 2170 ret = 0; 2171 break; 2172 default: 2173 ret = -EINVAL; 2174 break; 2175 } 2176 2177 return ret; 2178 } 2179 2180 static int 2181 iwl_mld_pre_channel_switch(struct ieee80211_hw *hw, 2182 struct ieee80211_vif *vif, 2183 struct ieee80211_channel_switch *chsw) 2184 { 2185 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2186 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2187 struct iwl_mld_link *mld_link = 2188 iwl_mld_link_dereference_check(mld_vif, chsw->link_id); 2189 u8 primary; 2190 int selected; 2191 2192 lockdep_assert_wiphy(mld->wiphy); 2193 2194 if (WARN_ON(!mld_link)) 2195 return -EINVAL; 2196 2197 IWL_DEBUG_MAC80211(mld, "pre CSA to freq %d\n", 2198 chsw->chandef.center_freq1); 2199 2200 if (!iwl_mld_emlsr_active(vif)) 2201 return 0; 2202 2203 primary = iwl_mld_get_primary_link(vif); 2204 2205 /* stay on the primary link unless it is undergoing a CSA with quiet */ 2206 if (chsw->link_id == primary && chsw->block_tx) 2207 selected = iwl_mld_get_other_link(vif, primary); 2208 else 2209 selected = primary; 2210 2211 /* Remember to tell the firmware that this link can't tx 2212 * Note that this logic seems to be unrelated to emlsr, but it 2213 * really is needed only when emlsr is active. When we have a 2214 * single link, the firmware will handle all this on its own. 2215 * In multi-link scenarios, we can learn about the CSA from 2216 * another link and this logic is too complex for the firmware 2217 * to track. 2218 * Since we want to de-activate the link that got a CSA with mode=1, 2219 * we need to tell the firmware not to send any frame on that link 2220 * as the firmware may not be aware that link is under a CSA 2221 * with mode=1 (no Tx allowed). 2222 */ 2223 mld_link->silent_deactivation = chsw->block_tx; 2224 iwl_mld_exit_emlsr(mld, vif, IWL_MLD_EMLSR_EXIT_CSA, selected); 2225 2226 return 0; 2227 } 2228 2229 static void 2230 iwl_mld_channel_switch(struct ieee80211_hw *hw, 2231 struct ieee80211_vif *vif, 2232 struct ieee80211_channel_switch *chsw) 2233 { 2234 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2235 2236 /* By implementing this operation, we prevent mac80211 from 2237 * starting its own channel switch timer, so that we can call 2238 * ieee80211_chswitch_done() ourselves at the right time 2239 * (Upon receiving the channel_switch_start notification from the fw) 2240 */ 2241 IWL_DEBUG_MAC80211(mld, 2242 "dummy channel switch op\n"); 2243 } 2244 2245 static int 2246 iwl_mld_post_channel_switch(struct ieee80211_hw *hw, 2247 struct ieee80211_vif *vif, 2248 struct ieee80211_bss_conf *link_conf) 2249 { 2250 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2251 struct iwl_mld_link *mld_link = iwl_mld_link_from_mac80211(link_conf); 2252 2253 lockdep_assert_wiphy(mld->wiphy); 2254 2255 WARN_ON(mld_link->silent_deactivation); 2256 2257 return 0; 2258 } 2259 2260 static void 2261 iwl_mld_abort_channel_switch(struct ieee80211_hw *hw, 2262 struct ieee80211_vif *vif, 2263 struct ieee80211_bss_conf *link_conf) 2264 { 2265 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2266 struct iwl_mld_link *mld_link = iwl_mld_link_from_mac80211(link_conf); 2267 2268 IWL_DEBUG_MAC80211(mld, 2269 "abort channel switch op\n"); 2270 mld_link->silent_deactivation = false; 2271 } 2272 2273 static int 2274 iwl_mld_switch_vif_chanctx_swap(struct ieee80211_hw *hw, 2275 struct ieee80211_vif_chanctx_switch *vifs) 2276 { 2277 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2278 int ret; 2279 2280 iwl_mld_unassign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2281 vifs[0].old_ctx); 2282 iwl_mld_remove_chanctx(hw, vifs[0].old_ctx); 2283 2284 ret = iwl_mld_add_chanctx(hw, vifs[0].new_ctx); 2285 if (ret) { 2286 IWL_ERR(mld, "failed to add new_ctx during channel switch\n"); 2287 goto out_reassign; 2288 } 2289 2290 ret = iwl_mld_assign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2291 vifs[0].new_ctx); 2292 if (ret) { 2293 IWL_ERR(mld, 2294 "failed to assign new_ctx during channel switch\n"); 2295 goto out_remove; 2296 } 2297 2298 return 0; 2299 2300 out_remove: 2301 iwl_mld_remove_chanctx(hw, vifs[0].new_ctx); 2302 out_reassign: 2303 if (iwl_mld_add_chanctx(hw, vifs[0].old_ctx)) { 2304 IWL_ERR(mld, "failed to add old_ctx after failure\n"); 2305 return ret; 2306 } 2307 2308 if (iwl_mld_assign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2309 vifs[0].old_ctx)) 2310 IWL_ERR(mld, "failed to reassign old_ctx after failure\n"); 2311 2312 return ret; 2313 } 2314 2315 static int 2316 iwl_mld_switch_vif_chanctx_reassign(struct ieee80211_hw *hw, 2317 struct ieee80211_vif_chanctx_switch *vifs) 2318 { 2319 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2320 int ret; 2321 2322 iwl_mld_unassign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2323 vifs[0].old_ctx); 2324 ret = iwl_mld_assign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2325 vifs[0].new_ctx); 2326 if (ret) { 2327 IWL_ERR(mld, 2328 "failed to assign new_ctx during channel switch\n"); 2329 goto out_reassign; 2330 } 2331 2332 return 0; 2333 2334 out_reassign: 2335 if (iwl_mld_assign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2336 vifs[0].old_ctx)) 2337 IWL_ERR(mld, "failed to reassign old_ctx after failure\n"); 2338 2339 return ret; 2340 } 2341 2342 static int 2343 iwl_mld_switch_vif_chanctx(struct ieee80211_hw *hw, 2344 struct ieee80211_vif_chanctx_switch *vifs, 2345 int n_vifs, 2346 enum ieee80211_chanctx_switch_mode mode) 2347 { 2348 int ret; 2349 2350 /* we only support a single-vif right now */ 2351 if (n_vifs > 1) 2352 return -EOPNOTSUPP; 2353 2354 switch (mode) { 2355 case CHANCTX_SWMODE_SWAP_CONTEXTS: 2356 ret = iwl_mld_switch_vif_chanctx_swap(hw, vifs); 2357 break; 2358 case CHANCTX_SWMODE_REASSIGN_VIF: 2359 ret = iwl_mld_switch_vif_chanctx_reassign(hw, vifs); 2360 break; 2361 default: 2362 ret = -EOPNOTSUPP; 2363 break; 2364 } 2365 2366 return ret; 2367 } 2368 2369 static void iwl_mld_sta_pre_rcu_remove(struct ieee80211_hw *hw, 2370 struct ieee80211_vif *vif, 2371 struct ieee80211_sta *sta) 2372 { 2373 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2374 struct iwl_mld_sta *mld_sta = iwl_mld_sta_from_mac80211(sta); 2375 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2376 struct iwl_mld_link_sta *mld_link_sta; 2377 u8 link_id; 2378 2379 lockdep_assert_wiphy(mld->wiphy); 2380 2381 /* This is called before mac80211 does RCU synchronisation, 2382 * so here we already invalidate our internal RCU-protected 2383 * station pointer. The rest of the code will thus no longer 2384 * be able to find the station this way, and we don't rely 2385 * on further RCU synchronisation after the sta_state() 2386 * callback deleted the station. 2387 */ 2388 for_each_mld_link_sta(mld_sta, mld_link_sta, link_id) 2389 RCU_INIT_POINTER(mld->fw_id_to_link_sta[mld_link_sta->fw_id], 2390 NULL); 2391 2392 if (sta == mld_vif->ap_sta) 2393 mld_vif->ap_sta = NULL; 2394 } 2395 2396 static void 2397 iwl_mld_mac80211_mgd_protect_tdls_discover(struct ieee80211_hw *hw, 2398 struct ieee80211_vif *vif, 2399 unsigned int link_id) 2400 { 2401 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2402 struct ieee80211_bss_conf *link_conf; 2403 u32 duration; 2404 int ret; 2405 2406 link_conf = wiphy_dereference(hw->wiphy, vif->link_conf[link_id]); 2407 if (WARN_ON_ONCE(!link_conf)) 2408 return; 2409 2410 /* Protect the session to hear the TDLS setup response on the channel */ 2411 2412 duration = 2 * link_conf->dtim_period * link_conf->beacon_int; 2413 2414 ret = iwl_mld_start_session_protection(mld, vif, duration, duration, 2415 link_id, HZ / 5); 2416 if (ret) 2417 IWL_ERR(mld, 2418 "Failed to start session protection for TDLS: %d\n", 2419 ret); 2420 } 2421 2422 static bool iwl_mld_can_activate_links(struct ieee80211_hw *hw, 2423 struct ieee80211_vif *vif, 2424 u16 desired_links) 2425 { 2426 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2427 int n_links = hweight16(desired_links); 2428 2429 /* Check if HW supports the wanted number of links */ 2430 return n_links <= iwl_mld_max_active_links(mld, vif); 2431 } 2432 2433 static int 2434 iwl_mld_change_vif_links(struct ieee80211_hw *hw, 2435 struct ieee80211_vif *vif, 2436 u16 old_links, u16 new_links, 2437 struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS]) 2438 { 2439 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2440 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2441 struct ieee80211_bss_conf *link_conf; 2442 u16 removed = old_links & ~new_links; 2443 u16 added = new_links & ~old_links; 2444 int err; 2445 2446 lockdep_assert_wiphy(mld->wiphy); 2447 2448 /* 2449 * No bits designate non-MLO mode. We can handle MLO exit/enter by 2450 * simply mapping that to link ID zero internally. 2451 * Note that mac80211 does such a non-MLO to MLO switch during restart 2452 * if it was in MLO before. In that case, we do not have a link to 2453 * remove. 2454 */ 2455 if (old_links == 0 && !mld->fw_status.in_hw_restart) 2456 removed |= BIT(0); 2457 2458 if (new_links == 0) 2459 added |= BIT(0); 2460 2461 for (int i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) { 2462 if (removed & BIT(i)) { 2463 link_conf = old[i]; 2464 2465 err = iwl_mld_remove_link(mld, link_conf); 2466 if (err) 2467 return err; 2468 } 2469 } 2470 2471 for (int i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) { 2472 if (added & BIT(i)) { 2473 link_conf = link_conf_dereference_protected(vif, i); 2474 if (WARN_ON(!link_conf)) 2475 return -EINVAL; 2476 2477 err = iwl_mld_add_link(mld, link_conf); 2478 if (err) 2479 goto remove_added_links; 2480 } 2481 } 2482 2483 /* 2484 * Ensure we always have a valid primary_link. When using multiple 2485 * links the proper value is set in assign_vif_chanctx. 2486 */ 2487 mld_vif->emlsr.primary = new_links ? __ffs(new_links) : 0; 2488 2489 /* 2490 * Special MLO restart case. We did not have a link when the interface 2491 * was added, so do the power configuration now. 2492 */ 2493 if (old_links == 0 && mld->fw_status.in_hw_restart) 2494 iwl_mld_update_mac_power(mld, vif, false); 2495 2496 return 0; 2497 2498 remove_added_links: 2499 for (int i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) { 2500 if (!(added & BIT(i))) 2501 continue; 2502 2503 link_conf = link_conf_dereference_protected(vif, i); 2504 if (!link_conf || !iwl_mld_link_from_mac80211(link_conf)) 2505 continue; 2506 2507 iwl_mld_remove_link(mld, link_conf); 2508 } 2509 2510 return err; 2511 } 2512 2513 static int iwl_mld_change_sta_links(struct ieee80211_hw *hw, 2514 struct ieee80211_vif *vif, 2515 struct ieee80211_sta *sta, 2516 u16 old_links, u16 new_links) 2517 { 2518 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2519 2520 return iwl_mld_update_link_stas(mld, vif, sta, old_links, new_links); 2521 } 2522 2523 static int iwl_mld_mac80211_join_ibss(struct ieee80211_hw *hw, 2524 struct ieee80211_vif *vif) 2525 { 2526 return iwl_mld_start_ap_ibss(hw, vif, &vif->bss_conf); 2527 } 2528 2529 static void iwl_mld_mac80211_leave_ibss(struct ieee80211_hw *hw, 2530 struct ieee80211_vif *vif) 2531 { 2532 return iwl_mld_stop_ap_ibss(hw, vif, &vif->bss_conf); 2533 } 2534 2535 static int iwl_mld_mac80211_tx_last_beacon(struct ieee80211_hw *hw) 2536 { 2537 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2538 2539 return mld->ibss_manager; 2540 } 2541 2542 #define IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS_TIMEOUT (5 * HZ) 2543 2544 static void iwl_mld_vif_iter_emlsr_block_tmp_non_bss(void *_data, u8 *mac, 2545 struct ieee80211_vif *vif) 2546 { 2547 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2548 int ret; 2549 2550 if (!iwl_mld_vif_has_emlsr_cap(vif)) 2551 return; 2552 2553 ret = iwl_mld_block_emlsr_sync(mld_vif->mld, vif, 2554 IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS, 2555 iwl_mld_get_primary_link(vif)); 2556 if (ret) 2557 return; 2558 2559 wiphy_delayed_work_queue(mld_vif->mld->wiphy, 2560 &mld_vif->emlsr.tmp_non_bss_done_wk, 2561 IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS_TIMEOUT); 2562 } 2563 2564 static void iwl_mld_prep_add_interface(struct ieee80211_hw *hw, 2565 enum nl80211_iftype type) 2566 { 2567 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2568 2569 IWL_DEBUG_MAC80211(mld, "prep_add_interface: type=%u\n", type); 2570 2571 if (!(type == NL80211_IFTYPE_AP || 2572 type == NL80211_IFTYPE_P2P_GO || 2573 type == NL80211_IFTYPE_P2P_CLIENT)) 2574 return; 2575 2576 ieee80211_iterate_active_interfaces_mtx(mld->hw, 2577 IEEE80211_IFACE_ITER_NORMAL, 2578 iwl_mld_vif_iter_emlsr_block_tmp_non_bss, 2579 NULL); 2580 } 2581 2582 static int iwl_mld_set_hw_timestamp(struct ieee80211_hw *hw, 2583 struct ieee80211_vif *vif, 2584 struct cfg80211_set_hw_timestamp *hwts) 2585 { 2586 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2587 u32 protocols = 0; 2588 2589 /* HW timestamping is only supported for a specific station */ 2590 if (!hwts->macaddr) 2591 return -EOPNOTSUPP; 2592 2593 if (hwts->enable) 2594 protocols = 2595 IWL_TIME_SYNC_PROTOCOL_TM | IWL_TIME_SYNC_PROTOCOL_FTM; 2596 2597 return iwl_mld_time_sync_config(mld, hwts->macaddr, protocols); 2598 } 2599 2600 static int iwl_mld_start_pmsr(struct ieee80211_hw *hw, 2601 struct ieee80211_vif *vif, 2602 struct cfg80211_pmsr_request *request) 2603 { 2604 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2605 2606 return iwl_mld_ftm_start(mld, vif, request); 2607 } 2608 2609 const struct ieee80211_ops iwl_mld_hw_ops = { 2610 .tx = iwl_mld_mac80211_tx, 2611 .start = iwl_mld_mac80211_start, 2612 .stop = iwl_mld_mac80211_stop, 2613 .config = iwl_mld_mac80211_config, 2614 .add_interface = iwl_mld_mac80211_add_interface, 2615 .remove_interface = iwl_mld_mac80211_remove_interface, 2616 .conf_tx = iwl_mld_mac80211_conf_tx, 2617 .prepare_multicast = iwl_mld_mac80211_prepare_multicast, 2618 .configure_filter = iwl_mld_mac80211_configure_filter, 2619 .reconfig_complete = iwl_mld_mac80211_reconfig_complete, 2620 .wake_tx_queue = iwl_mld_mac80211_wake_tx_queue, 2621 .add_chanctx = iwl_mld_add_chanctx, 2622 .remove_chanctx = iwl_mld_remove_chanctx, 2623 .change_chanctx = iwl_mld_change_chanctx, 2624 .assign_vif_chanctx = iwl_mld_assign_vif_chanctx, 2625 .unassign_vif_chanctx = iwl_mld_unassign_vif_chanctx, 2626 .set_rts_threshold = iwl_mld_mac80211_set_rts_threshold, 2627 .link_info_changed = iwl_mld_mac80211_link_info_changed, 2628 .vif_cfg_changed = iwl_mld_mac80211_vif_cfg_changed, 2629 .set_key = iwl_mld_mac80211_set_key, 2630 .hw_scan = iwl_mld_mac80211_hw_scan, 2631 .cancel_hw_scan = iwl_mld_mac80211_cancel_hw_scan, 2632 .sched_scan_start = iwl_mld_mac80211_sched_scan_start, 2633 .sched_scan_stop = iwl_mld_mac80211_sched_scan_stop, 2634 .mgd_prepare_tx = iwl_mld_mac80211_mgd_prepare_tx, 2635 .mgd_complete_tx = iwl_mld_mac_mgd_complete_tx, 2636 .sta_state = iwl_mld_mac80211_sta_state, 2637 .sta_statistics = iwl_mld_mac80211_sta_statistics, 2638 .flush = iwl_mld_mac80211_flush, 2639 .flush_sta = iwl_mld_mac80211_flush_sta, 2640 .ampdu_action = iwl_mld_mac80211_ampdu_action, 2641 .can_aggregate_in_amsdu = iwl_mld_mac80211_can_aggregate, 2642 .sync_rx_queues = iwl_mld_mac80211_sync_rx_queues, 2643 .link_sta_rc_update = iwl_mld_sta_rc_update, 2644 .start_ap = iwl_mld_start_ap_ibss, 2645 .stop_ap = iwl_mld_stop_ap_ibss, 2646 .pre_channel_switch = iwl_mld_pre_channel_switch, 2647 .channel_switch = iwl_mld_channel_switch, 2648 .post_channel_switch = iwl_mld_post_channel_switch, 2649 .abort_channel_switch = iwl_mld_abort_channel_switch, 2650 .switch_vif_chanctx = iwl_mld_switch_vif_chanctx, 2651 .sta_pre_rcu_remove = iwl_mld_sta_pre_rcu_remove, 2652 .remain_on_channel = iwl_mld_start_roc, 2653 .cancel_remain_on_channel = iwl_mld_cancel_roc, 2654 .can_activate_links = iwl_mld_can_activate_links, 2655 .change_vif_links = iwl_mld_change_vif_links, 2656 .change_sta_links = iwl_mld_change_sta_links, 2657 #ifdef CONFIG_PM_SLEEP 2658 .suspend = iwl_mld_suspend, 2659 .resume = iwl_mld_resume, 2660 .set_wakeup = iwl_mld_set_wakeup, 2661 .set_rekey_data = iwl_mld_set_rekey_data, 2662 #if IS_ENABLED(CONFIG_IPV6) 2663 .ipv6_addr_change = iwl_mld_ipv6_addr_change, 2664 #endif /* IS_ENABLED(CONFIG_IPV6) */ 2665 #endif /* CONFIG_PM_SLEEP */ 2666 #ifdef CONFIG_IWLWIFI_DEBUGFS 2667 .vif_add_debugfs = iwl_mld_add_vif_debugfs, 2668 .link_add_debugfs = iwl_mld_add_link_debugfs, 2669 .link_sta_add_debugfs = iwl_mld_add_link_sta_debugfs, 2670 #endif 2671 .mgd_protect_tdls_discover = iwl_mld_mac80211_mgd_protect_tdls_discover, 2672 .join_ibss = iwl_mld_mac80211_join_ibss, 2673 .leave_ibss = iwl_mld_mac80211_leave_ibss, 2674 .tx_last_beacon = iwl_mld_mac80211_tx_last_beacon, 2675 .prep_add_interface = iwl_mld_prep_add_interface, 2676 .set_hw_timestamp = iwl_mld_set_hw_timestamp, 2677 .start_pmsr = iwl_mld_start_pmsr, 2678 }; 2679