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 bool in_d3 = false; 479 int ret = 0; 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 || 541 (IS_ENABLED(CONFIG_PM_SLEEP) && iwl_mld_no_wowlan_suspend(mld))) 542 iwl_mld_stop_fw(mld); 543 544 /* HW is stopped, no more coming RX. OTOH, the worker can't run as the 545 * wiphy lock is held. Cancel it in case it was scheduled just before 546 * we stopped the HW. 547 */ 548 wiphy_work_cancel(mld->wiphy, &mld->async_handlers_wk); 549 550 /* Empty out the list, as the worker won't do that */ 551 iwl_mld_purge_async_handlers_list(mld); 552 553 /* Clear in_hw_restart flag when stopping the hw, as mac80211 won't 554 * execute the restart. 555 */ 556 mld->fw_status.in_hw_restart = false; 557 558 /* We shouldn't have any UIDs still set. Loop over all the UIDs to 559 * make sure there's nothing left there and warn if any is found. 560 */ 561 for (int i = 0; i < ARRAY_SIZE(mld->scan.uid_status); i++) 562 if (WARN_ONCE(mld->scan.uid_status[i], 563 "UMAC scan UID %d status was not cleaned (0x%x 0x%x)\n", 564 i, mld->scan.uid_status[i], mld->scan.status)) 565 mld->scan.uid_status[i] = 0; 566 } 567 568 static 569 int iwl_mld_mac80211_config(struct ieee80211_hw *hw, u32 changed) 570 { 571 return 0; 572 } 573 574 static 575 int iwl_mld_mac80211_add_interface(struct ieee80211_hw *hw, 576 struct ieee80211_vif *vif) 577 { 578 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 579 int ret; 580 581 lockdep_assert_wiphy(mld->wiphy); 582 583 /* Construct mld_vif, add it to fw, and map its ID to ieee80211_vif */ 584 ret = iwl_mld_add_vif(mld, vif); 585 if (ret) 586 return ret; 587 588 /* 589 * Add the default link, but not if this is an MLD vif as that implies 590 * the HW is restarting and it will be configured by change_vif_links. 591 */ 592 if (!ieee80211_vif_is_mld(vif)) 593 ret = iwl_mld_add_link(mld, &vif->bss_conf); 594 if (ret) 595 goto err; 596 597 if (vif->type == NL80211_IFTYPE_STATION) { 598 vif->driver_flags |= IEEE80211_VIF_REMOVE_AP_AFTER_DISASSOC; 599 if (!vif->p2p) 600 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 601 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 602 } 603 604 if (vif->p2p || iwl_fw_lookup_cmd_ver(mld->fw, PHY_CONTEXT_CMD, 0) < 5) 605 vif->driver_flags |= IEEE80211_VIF_IGNORE_OFDMA_WIDER_BW; 606 607 /* 608 * For an MLD vif (in restart) we may not have a link; delay the call 609 * the initial change_vif_links. 610 */ 611 if (vif->type == NL80211_IFTYPE_STATION && 612 !ieee80211_vif_is_mld(vif)) 613 iwl_mld_update_mac_power(mld, vif, false); 614 615 if (vif->type == NL80211_IFTYPE_MONITOR) { 616 mld->monitor.on = true; 617 ieee80211_hw_set(mld->hw, RX_INCLUDES_FCS); 618 } 619 620 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 621 mld->p2p_device_vif = vif; 622 623 return 0; 624 625 err: 626 iwl_mld_rm_vif(mld, vif); 627 return ret; 628 } 629 630 static 631 void iwl_mld_mac80211_remove_interface(struct ieee80211_hw *hw, 632 struct ieee80211_vif *vif) 633 { 634 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 635 636 lockdep_assert_wiphy(mld->wiphy); 637 638 if (ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_STATION) 639 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 640 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 641 642 if (vif->type == NL80211_IFTYPE_MONITOR) { 643 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mld->hw->flags); 644 mld->monitor.on = false; 645 } 646 647 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 648 mld->p2p_device_vif = NULL; 649 650 iwl_mld_remove_link(mld, &vif->bss_conf); 651 652 #ifdef CONFIG_IWLWIFI_DEBUGFS 653 debugfs_remove(iwl_mld_vif_from_mac80211(vif)->dbgfs_slink); 654 iwl_mld_vif_from_mac80211(vif)->dbgfs_slink = NULL; 655 #endif 656 657 iwl_mld_rm_vif(mld, vif); 658 } 659 660 struct iwl_mld_mc_iter_data { 661 struct iwl_mld *mld; 662 int port_id; 663 }; 664 665 static void iwl_mld_mc_iface_iterator(void *data, u8 *mac, 666 struct ieee80211_vif *vif) 667 { 668 struct iwl_mld_mc_iter_data *mc_data = data; 669 struct iwl_mld *mld = mc_data->mld; 670 struct iwl_mcast_filter_cmd *cmd = mld->mcast_filter_cmd; 671 struct iwl_host_cmd hcmd = { 672 .id = MCAST_FILTER_CMD, 673 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 674 }; 675 int ret, len; 676 677 /* If we don't have free ports, mcast frames will be dropped */ 678 if (WARN_ON_ONCE(mc_data->port_id >= MAX_PORT_ID_NUM)) 679 return; 680 681 if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc) 682 return; 683 684 cmd->port_id = mc_data->port_id++; 685 ether_addr_copy(cmd->bssid, vif->bss_conf.bssid); 686 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4); 687 688 hcmd.len[0] = len; 689 hcmd.data[0] = cmd; 690 691 ret = iwl_mld_send_cmd(mld, &hcmd); 692 if (ret) 693 IWL_ERR(mld, "mcast filter cmd error. ret=%d\n", ret); 694 } 695 696 void iwl_mld_recalc_multicast_filter(struct iwl_mld *mld) 697 { 698 struct iwl_mld_mc_iter_data iter_data = { 699 .mld = mld, 700 }; 701 702 if (WARN_ON_ONCE(!mld->mcast_filter_cmd)) 703 return; 704 705 ieee80211_iterate_active_interfaces(mld->hw, 706 IEEE80211_IFACE_ITER_NORMAL, 707 iwl_mld_mc_iface_iterator, 708 &iter_data); 709 } 710 711 static u64 712 iwl_mld_mac80211_prepare_multicast(struct ieee80211_hw *hw, 713 struct netdev_hw_addr_list *mc_list) 714 { 715 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 716 struct iwl_mcast_filter_cmd *cmd; 717 struct netdev_hw_addr *addr; 718 int addr_count = netdev_hw_addr_list_count(mc_list); 719 bool pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES; 720 int len; 721 722 if (pass_all) 723 addr_count = 0; 724 725 /* len must be a multiple of 4 */ 726 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4); 727 cmd = kzalloc(len, GFP_ATOMIC); 728 if (!cmd) 729 return 0; 730 731 if (pass_all) { 732 cmd->pass_all = 1; 733 goto out; 734 } 735 736 netdev_hw_addr_list_for_each(addr, mc_list) { 737 IWL_DEBUG_MAC80211(mld, "mcast addr (%d): %pM\n", 738 cmd->count, addr->addr); 739 ether_addr_copy(&cmd->addr_list[cmd->count * ETH_ALEN], 740 addr->addr); 741 cmd->count++; 742 } 743 744 out: 745 return (u64)(unsigned long)cmd; 746 } 747 748 static 749 void iwl_mld_mac80211_configure_filter(struct ieee80211_hw *hw, 750 unsigned int changed_flags, 751 unsigned int *total_flags, 752 u64 multicast) 753 { 754 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 755 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast; 756 757 /* Replace previous configuration */ 758 kfree(mld->mcast_filter_cmd); 759 mld->mcast_filter_cmd = cmd; 760 761 if (!cmd) 762 goto out; 763 764 if (changed_flags & FIF_ALLMULTI) 765 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI); 766 767 if (cmd->pass_all) 768 cmd->count = 0; 769 770 iwl_mld_recalc_multicast_filter(mld); 771 out: 772 *total_flags = 0; 773 } 774 775 static 776 void iwl_mld_mac80211_wake_tx_queue(struct ieee80211_hw *hw, 777 struct ieee80211_txq *txq) 778 { 779 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 780 struct iwl_mld_txq *mld_txq = iwl_mld_txq_from_mac80211(txq); 781 782 if (likely(mld_txq->status.allocated) || !txq->sta) { 783 iwl_mld_tx_from_txq(mld, txq); 784 return; 785 } 786 787 /* We don't support TSPEC tids. %IEEE80211_NUM_TIDS is for mgmt */ 788 if (txq->tid != IEEE80211_NUM_TIDS && txq->tid >= IWL_MAX_TID_COUNT) { 789 IWL_DEBUG_MAC80211(mld, "TID %d is not supported\n", txq->tid); 790 return; 791 } 792 793 /* The worker will handle any packets we leave on the txq now */ 794 795 spin_lock_bh(&mld->add_txqs_lock); 796 /* The list is being deleted only after the queue is fully allocated. */ 797 if (list_empty(&mld_txq->list) && 798 /* recheck under lock, otherwise it can be added twice */ 799 !mld_txq->status.allocated) { 800 list_add_tail(&mld_txq->list, &mld->txqs_to_add); 801 wiphy_work_queue(mld->wiphy, &mld->add_txqs_wk); 802 } 803 spin_unlock_bh(&mld->add_txqs_lock); 804 } 805 806 static void iwl_mld_teardown_tdls_peers(struct iwl_mld *mld) 807 { 808 lockdep_assert_wiphy(mld->wiphy); 809 810 for (int i = 0; i < mld->fw->ucode_capa.num_stations; i++) { 811 struct ieee80211_link_sta *link_sta; 812 struct iwl_mld_sta *mld_sta; 813 814 link_sta = wiphy_dereference(mld->wiphy, 815 mld->fw_id_to_link_sta[i]); 816 if (IS_ERR_OR_NULL(link_sta)) 817 continue; 818 819 if (!link_sta->sta->tdls) 820 continue; 821 822 mld_sta = iwl_mld_sta_from_mac80211(link_sta->sta); 823 824 ieee80211_tdls_oper_request(mld_sta->vif, link_sta->addr, 825 NL80211_TDLS_TEARDOWN, 826 WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED, 827 GFP_KERNEL); 828 } 829 } 830 831 static 832 int iwl_mld_add_chanctx(struct ieee80211_hw *hw, 833 struct ieee80211_chanctx_conf *ctx) 834 { 835 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 836 struct iwl_mld_phy *phy = iwl_mld_phy_from_mac80211(ctx); 837 int fw_id = iwl_mld_allocate_fw_phy_id(mld); 838 int ret; 839 840 if (fw_id < 0) 841 return fw_id; 842 843 phy->mld = mld; 844 phy->fw_id = fw_id; 845 phy->chandef = *iwl_mld_get_chandef_from_chanctx(mld, ctx); 846 847 ret = iwl_mld_phy_fw_action(mld, ctx, FW_CTXT_ACTION_ADD); 848 if (ret) { 849 mld->used_phy_ids &= ~BIT(phy->fw_id); 850 return ret; 851 } 852 853 if (hweight8(mld->used_phy_ids) > 1) 854 iwl_mld_teardown_tdls_peers(mld); 855 856 return 0; 857 } 858 859 static 860 void iwl_mld_remove_chanctx(struct ieee80211_hw *hw, 861 struct ieee80211_chanctx_conf *ctx) 862 { 863 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 864 struct iwl_mld_phy *phy = iwl_mld_phy_from_mac80211(ctx); 865 866 iwl_mld_phy_fw_action(mld, ctx, FW_CTXT_ACTION_REMOVE); 867 mld->used_phy_ids &= ~BIT(phy->fw_id); 868 } 869 870 static 871 void iwl_mld_change_chanctx(struct ieee80211_hw *hw, 872 struct ieee80211_chanctx_conf *ctx, u32 changed) 873 { 874 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 875 struct iwl_mld_phy *phy = iwl_mld_phy_from_mac80211(ctx); 876 struct cfg80211_chan_def *chandef = 877 iwl_mld_get_chandef_from_chanctx(mld, ctx); 878 879 /* We don't care about these */ 880 if (!(changed & ~(IEEE80211_CHANCTX_CHANGE_RX_CHAINS | 881 IEEE80211_CHANCTX_CHANGE_RADAR | 882 IEEE80211_CHANCTX_CHANGE_CHANNEL))) 883 return; 884 885 /* Check if a FW update is required */ 886 887 if (changed & IEEE80211_CHANCTX_CHANGE_AP) 888 goto update; 889 890 if (chandef->chan == phy->chandef.chan && 891 chandef->center_freq1 == phy->chandef.center_freq1 && 892 chandef->punctured == phy->chandef.punctured) { 893 /* Check if we are toggling between HT and non-HT, no-op */ 894 if (phy->chandef.width == chandef->width || 895 (phy->chandef.width <= NL80211_CHAN_WIDTH_20 && 896 chandef->width <= NL80211_CHAN_WIDTH_20)) 897 return; 898 } 899 update: 900 phy->chandef = *chandef; 901 902 iwl_mld_phy_fw_action(mld, ctx, FW_CTXT_ACTION_MODIFY); 903 } 904 905 static u8 906 iwl_mld_chandef_get_primary_80(struct cfg80211_chan_def *chandef) 907 { 908 int data_start; 909 int control_start; 910 int bw; 911 912 if (chandef->width == NL80211_CHAN_WIDTH_320) 913 bw = 320; 914 else if (chandef->width == NL80211_CHAN_WIDTH_160) 915 bw = 160; 916 else 917 return 0; 918 919 /* data is bw wide so the start is half the width */ 920 data_start = chandef->center_freq1 - bw / 2; 921 /* control is 20Mhz width */ 922 control_start = chandef->chan->center_freq - 10; 923 924 return (control_start - data_start) / 80; 925 } 926 927 static bool iwl_mld_can_activate_link(struct iwl_mld *mld, 928 struct ieee80211_vif *vif, 929 struct ieee80211_bss_conf *link) 930 { 931 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 932 struct iwl_mld_sta *mld_sta; 933 struct iwl_mld_link_sta *link_sta; 934 935 /* In association, we activate the assoc link before adding the STA. */ 936 if (!mld_vif->ap_sta || !vif->cfg.assoc) 937 return true; 938 939 mld_sta = iwl_mld_sta_from_mac80211(mld_vif->ap_sta); 940 941 /* When switching links, we need to wait with the activation until the 942 * STA was added to the FW. It'll be activated in 943 * iwl_mld_update_link_stas 944 */ 945 link_sta = wiphy_dereference(mld->wiphy, mld_sta->link[link->link_id]); 946 947 /* In restart we can have a link_sta that doesn't exist in FW yet */ 948 return link_sta && link_sta->in_fw; 949 } 950 951 static 952 int iwl_mld_assign_vif_chanctx(struct ieee80211_hw *hw, 953 struct ieee80211_vif *vif, 954 struct ieee80211_bss_conf *link, 955 struct ieee80211_chanctx_conf *ctx) 956 { 957 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 958 struct iwl_mld_link *mld_link = iwl_mld_link_from_mac80211(link); 959 unsigned int n_active = iwl_mld_count_active_links(mld, vif); 960 int ret; 961 962 lockdep_assert_wiphy(mld->wiphy); 963 964 if (WARN_ON(!mld_link)) 965 return -EINVAL; 966 967 /* if the assigned one was not counted yet, count it now */ 968 if (!rcu_access_pointer(mld_link->chan_ctx)) { 969 n_active++; 970 971 /* Track addition of non-BSS link */ 972 if (ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_STATION) { 973 ret = iwl_mld_emlsr_check_non_bss_block(mld, 1); 974 if (ret) 975 return ret; 976 } 977 } 978 979 /* for AP, mac parameters such as HE support are updated at this stage. */ 980 if (vif->type == NL80211_IFTYPE_AP) { 981 ret = iwl_mld_mac_fw_action(mld, vif, FW_CTXT_ACTION_MODIFY); 982 983 if (ret) { 984 IWL_ERR(mld, "failed to update MAC %pM\n", vif->addr); 985 return -EINVAL; 986 } 987 } 988 989 rcu_assign_pointer(mld_link->chan_ctx, ctx); 990 991 if (n_active > 1) { 992 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 993 994 iwl_mld_leave_omi_bw_reduction(mld); 995 996 /* Indicate to mac80211 that EML is enabled */ 997 vif->driver_flags |= IEEE80211_VIF_EML_ACTIVE; 998 999 if (vif->active_links & BIT(mld_vif->emlsr.selected_links)) 1000 mld_vif->emlsr.primary = mld_vif->emlsr.selected_primary; 1001 else 1002 mld_vif->emlsr.primary = __ffs(vif->active_links); 1003 1004 iwl_dbg_tlv_time_point(&mld->fwrt, IWL_FW_INI_TIME_ESR_LINK_UP, 1005 NULL); 1006 } 1007 1008 /* First send the link command with the phy context ID. 1009 * Now that we have the phy, we know the band so also the rates 1010 */ 1011 ret = iwl_mld_change_link_in_fw(mld, link, 1012 LINK_CONTEXT_MODIFY_RATES_INFO); 1013 if (ret) 1014 goto err; 1015 1016 /* TODO: Initialize rate control for the AP station, since we might be 1017 * doing a link switch here - we cannot initialize it before since 1018 * this needs the phy context assigned (and in FW?), and we cannot 1019 * do it later because it needs to be initialized as soon as we're 1020 * able to TX on the link, i.e. when active. (task=link-switch) 1021 */ 1022 1023 /* Now activate the link */ 1024 if (iwl_mld_can_activate_link(mld, vif, link)) { 1025 ret = iwl_mld_activate_link(mld, link); 1026 if (ret) 1027 goto err; 1028 } 1029 1030 if (vif->type == NL80211_IFTYPE_STATION) 1031 iwl_mld_send_ap_tx_power_constraint_cmd(mld, vif, link); 1032 1033 if (vif->type == NL80211_IFTYPE_MONITOR) { 1034 /* TODO: task=sniffer add sniffer station */ 1035 mld->monitor.p80 = 1036 iwl_mld_chandef_get_primary_80(&vif->bss_conf.chanreq.oper); 1037 } 1038 1039 return 0; 1040 err: 1041 RCU_INIT_POINTER(mld_link->chan_ctx, NULL); 1042 return ret; 1043 } 1044 1045 static 1046 void iwl_mld_unassign_vif_chanctx(struct ieee80211_hw *hw, 1047 struct ieee80211_vif *vif, 1048 struct ieee80211_bss_conf *link, 1049 struct ieee80211_chanctx_conf *ctx) 1050 { 1051 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1052 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1053 struct iwl_mld_link *mld_link = iwl_mld_link_from_mac80211(link); 1054 unsigned int n_active = iwl_mld_count_active_links(mld, vif); 1055 1056 if (WARN_ON(!mld_link)) 1057 return; 1058 1059 /* Track removal of non-BSS link */ 1060 if (ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_STATION) 1061 iwl_mld_emlsr_check_non_bss_block(mld, -1); 1062 1063 iwl_mld_deactivate_link(mld, link); 1064 1065 /* TODO: task=sniffer remove sniffer station */ 1066 1067 if (n_active > 1) { 1068 /* Indicate to mac80211 that EML is disabled */ 1069 vif->driver_flags &= ~IEEE80211_VIF_EML_ACTIVE; 1070 1071 iwl_dbg_tlv_time_point(&mld->fwrt, 1072 IWL_FW_INI_TIME_ESR_LINK_DOWN, 1073 NULL); 1074 } 1075 1076 RCU_INIT_POINTER(mld_link->chan_ctx, NULL); 1077 1078 /* in the non-MLO case, remove/re-add the link to clean up FW state. 1079 * In MLO, it'll be done in drv_change_vif_link 1080 */ 1081 if (!ieee80211_vif_is_mld(vif) && !mld_vif->ap_sta && 1082 !WARN_ON_ONCE(vif->cfg.assoc) && 1083 vif->type != NL80211_IFTYPE_AP && !mld->fw_status.in_hw_restart) { 1084 iwl_mld_remove_link(mld, link); 1085 iwl_mld_add_link(mld, link); 1086 } 1087 } 1088 1089 static 1090 int iwl_mld_mac80211_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 1091 { 1092 return 0; 1093 } 1094 1095 static void 1096 iwl_mld_link_info_changed_ap_ibss(struct iwl_mld *mld, 1097 struct ieee80211_vif *vif, 1098 struct ieee80211_bss_conf *link, 1099 u64 changes) 1100 { 1101 u32 link_changes = 0; 1102 1103 if (changes & BSS_CHANGED_ERP_SLOT) 1104 link_changes |= LINK_CONTEXT_MODIFY_RATES_INFO; 1105 1106 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT)) 1107 link_changes |= LINK_CONTEXT_MODIFY_PROTECT_FLAGS; 1108 1109 if (changes & (BSS_CHANGED_QOS | BSS_CHANGED_BANDWIDTH)) 1110 link_changes |= LINK_CONTEXT_MODIFY_QOS_PARAMS; 1111 1112 if (changes & BSS_CHANGED_HE_BSS_COLOR) 1113 link_changes |= LINK_CONTEXT_MODIFY_HE_PARAMS; 1114 1115 if (link_changes) 1116 iwl_mld_change_link_in_fw(mld, link, link_changes); 1117 1118 if (changes & BSS_CHANGED_BEACON) 1119 iwl_mld_update_beacon_template(mld, vif, link); 1120 } 1121 1122 static 1123 u32 iwl_mld_link_changed_mapping(struct iwl_mld *mld, 1124 struct ieee80211_vif *vif, 1125 struct ieee80211_bss_conf *link_conf, 1126 u64 changes) 1127 { 1128 u32 link_changes = 0; 1129 bool has_he, has_eht; 1130 1131 if (changes & BSS_CHANGED_QOS && vif->cfg.assoc && link_conf->qos) 1132 link_changes |= LINK_CONTEXT_MODIFY_QOS_PARAMS; 1133 1134 if (changes & (BSS_CHANGED_ERP_PREAMBLE | BSS_CHANGED_BASIC_RATES | 1135 BSS_CHANGED_ERP_SLOT)) 1136 link_changes |= LINK_CONTEXT_MODIFY_RATES_INFO; 1137 1138 if (changes & (BSS_CHANGED_HT | BSS_CHANGED_ERP_CTS_PROT)) 1139 link_changes |= LINK_CONTEXT_MODIFY_PROTECT_FLAGS; 1140 1141 /* TODO: task=MLO check mac80211's HE flags and if command is needed 1142 * every time there's a link change. Currently used flags are 1143 * BSS_CHANGED_HE_OBSS_PD and BSS_CHANGED_HE_BSS_COLOR. 1144 */ 1145 has_he = link_conf->he_support && !iwlwifi_mod_params.disable_11ax; 1146 has_eht = link_conf->eht_support && !iwlwifi_mod_params.disable_11be; 1147 1148 if (vif->cfg.assoc && (has_he || has_eht)) { 1149 IWL_DEBUG_MAC80211(mld, "Associated in HE mode\n"); 1150 link_changes |= LINK_CONTEXT_MODIFY_HE_PARAMS; 1151 } 1152 1153 return link_changes; 1154 } 1155 1156 static void 1157 iwl_mld_mac80211_link_info_changed_sta(struct iwl_mld *mld, 1158 struct ieee80211_vif *vif, 1159 struct ieee80211_bss_conf *link_conf, 1160 u64 changes) 1161 { 1162 u32 link_changes = iwl_mld_link_changed_mapping(mld, vif, link_conf, 1163 changes); 1164 1165 if (link_changes) 1166 iwl_mld_change_link_in_fw(mld, link_conf, link_changes); 1167 1168 if (changes & BSS_CHANGED_TPE) 1169 iwl_mld_send_ap_tx_power_constraint_cmd(mld, vif, link_conf); 1170 1171 if (changes & BSS_CHANGED_BEACON_INFO) 1172 iwl_mld_update_mac_power(mld, vif, false); 1173 1174 /* The firmware will wait quite a while after association before it 1175 * starts filtering the beacons. We can safely enable beacon filtering 1176 * upon CQM configuration, even if we didn't get a beacon yet. 1177 */ 1178 if (changes & (BSS_CHANGED_CQM | BSS_CHANGED_BEACON_INFO)) 1179 iwl_mld_enable_beacon_filter(mld, link_conf, false); 1180 1181 /* If we have used OMI before to reduce bandwidth to 80 MHz and then 1182 * increased to 160 MHz again, and then the AP changes to 320 MHz, it 1183 * will think that we're limited to 160 MHz right now. Update it by 1184 * requesting a new OMI bandwidth. 1185 */ 1186 if (changes & BSS_CHANGED_BANDWIDTH) { 1187 enum ieee80211_sta_rx_bandwidth bw; 1188 1189 bw = ieee80211_chan_width_to_rx_bw(link_conf->chanreq.oper.width); 1190 1191 iwl_mld_omi_ap_changed_bw(mld, link_conf, bw); 1192 1193 } 1194 1195 if (changes & BSS_CHANGED_BANDWIDTH) 1196 iwl_mld_retry_emlsr(mld, vif); 1197 } 1198 1199 static int iwl_mld_update_mu_groups(struct iwl_mld *mld, 1200 struct ieee80211_bss_conf *link_conf) 1201 { 1202 struct iwl_mu_group_mgmt_cmd cmd = {}; 1203 1204 BUILD_BUG_ON(sizeof(cmd.membership_status) != 1205 sizeof(link_conf->mu_group.membership)); 1206 BUILD_BUG_ON(sizeof(cmd.user_position) != 1207 sizeof(link_conf->mu_group.position)); 1208 1209 memcpy(cmd.membership_status, link_conf->mu_group.membership, 1210 WLAN_MEMBERSHIP_LEN); 1211 memcpy(cmd.user_position, link_conf->mu_group.position, 1212 WLAN_USER_POSITION_LEN); 1213 1214 return iwl_mld_send_cmd_pdu(mld, 1215 WIDE_ID(DATA_PATH_GROUP, 1216 UPDATE_MU_GROUPS_CMD), 1217 &cmd); 1218 } 1219 1220 static void 1221 iwl_mld_mac80211_link_info_changed(struct ieee80211_hw *hw, 1222 struct ieee80211_vif *vif, 1223 struct ieee80211_bss_conf *link_conf, 1224 u64 changes) 1225 { 1226 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1227 1228 switch (vif->type) { 1229 case NL80211_IFTYPE_STATION: 1230 iwl_mld_mac80211_link_info_changed_sta(mld, vif, link_conf, 1231 changes); 1232 break; 1233 case NL80211_IFTYPE_AP: 1234 case NL80211_IFTYPE_ADHOC: 1235 iwl_mld_link_info_changed_ap_ibss(mld, vif, link_conf, 1236 changes); 1237 break; 1238 case NL80211_IFTYPE_MONITOR: 1239 /* The firmware tracks this on its own in STATION mode, but 1240 * obviously not in sniffer mode. 1241 */ 1242 if (changes & BSS_CHANGED_MU_GROUPS) 1243 iwl_mld_update_mu_groups(mld, link_conf); 1244 break; 1245 default: 1246 /* shouldn't happen */ 1247 WARN_ON_ONCE(1); 1248 } 1249 1250 /* We now know our BSSID, we can configure the MAC context with 1251 * eht_support if needed. 1252 */ 1253 if (changes & BSS_CHANGED_BSSID) 1254 iwl_mld_mac_fw_action(mld, vif, FW_CTXT_ACTION_MODIFY); 1255 1256 if (changes & BSS_CHANGED_TXPOWER) 1257 iwl_mld_set_tx_power(mld, link_conf, link_conf->txpower); 1258 } 1259 1260 static void 1261 iwl_mld_smps_wa(struct iwl_mld *mld, struct ieee80211_vif *vif, bool enable) 1262 { 1263 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1264 1265 /* Send the device-level power commands since the 1266 * firmware checks the POWER_TABLE_CMD's POWER_SAVE_EN bit to 1267 * determine SMPS mode. 1268 */ 1269 if (mld_vif->ps_disabled == !enable) 1270 return; 1271 1272 mld_vif->ps_disabled = !enable; 1273 1274 iwl_mld_update_device_power(mld, false); 1275 } 1276 1277 static 1278 void iwl_mld_mac80211_vif_cfg_changed(struct ieee80211_hw *hw, 1279 struct ieee80211_vif *vif, 1280 u64 changes) 1281 { 1282 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1283 int ret; 1284 1285 lockdep_assert_wiphy(mld->wiphy); 1286 1287 if (vif->type != NL80211_IFTYPE_STATION) 1288 return; 1289 1290 if (changes & BSS_CHANGED_ASSOC) { 1291 ret = iwl_mld_mac_fw_action(mld, vif, FW_CTXT_ACTION_MODIFY); 1292 if (ret) 1293 IWL_ERR(mld, "failed to update context\n"); 1294 1295 if (vif->cfg.assoc) { 1296 /* Clear statistics to get clean beacon counter, and 1297 * ask for periodic statistics, as they are needed for 1298 * link selection and RX OMI decisions. 1299 */ 1300 iwl_mld_clear_stats_in_fw(mld); 1301 iwl_mld_request_periodic_fw_stats(mld, true); 1302 1303 iwl_mld_set_vif_associated(mld, vif); 1304 } else { 1305 iwl_mld_request_periodic_fw_stats(mld, false); 1306 } 1307 } 1308 1309 if (changes & BSS_CHANGED_PS) { 1310 iwl_mld_smps_wa(mld, vif, vif->cfg.ps); 1311 iwl_mld_update_mac_power(mld, vif, false); 1312 } 1313 1314 /* TODO: task=MLO BSS_CHANGED_MLD_VALID_LINKS/CHANGED_MLD_TTLM */ 1315 } 1316 1317 static int 1318 iwl_mld_mac80211_hw_scan(struct ieee80211_hw *hw, 1319 struct ieee80211_vif *vif, 1320 struct ieee80211_scan_request *hw_req) 1321 { 1322 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1323 1324 if (WARN_ON(!hw_req->req.n_channels || 1325 hw_req->req.n_channels > 1326 mld->fw->ucode_capa.n_scan_channels)) 1327 return -EINVAL; 1328 1329 return iwl_mld_regular_scan_start(mld, vif, &hw_req->req, &hw_req->ies); 1330 } 1331 1332 static void 1333 iwl_mld_mac80211_cancel_hw_scan(struct ieee80211_hw *hw, 1334 struct ieee80211_vif *vif) 1335 { 1336 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1337 1338 /* Due to a race condition, it's possible that mac80211 asks 1339 * us to stop a hw_scan when it's already stopped. This can 1340 * happen, for instance, if we stopped the scan ourselves, 1341 * called ieee80211_scan_completed() and the userspace called 1342 * cancel scan before ieee80211_scan_work() could run. 1343 * To handle that, simply return if the scan is not running. 1344 */ 1345 if (mld->scan.status & IWL_MLD_SCAN_REGULAR) 1346 iwl_mld_scan_stop(mld, IWL_MLD_SCAN_REGULAR, true); 1347 } 1348 1349 static int 1350 iwl_mld_mac80211_sched_scan_start(struct ieee80211_hw *hw, 1351 struct ieee80211_vif *vif, 1352 struct cfg80211_sched_scan_request *req, 1353 struct ieee80211_scan_ies *ies) 1354 { 1355 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1356 1357 return iwl_mld_sched_scan_start(mld, vif, req, ies, IWL_MLD_SCAN_SCHED); 1358 } 1359 1360 static int 1361 iwl_mld_mac80211_sched_scan_stop(struct ieee80211_hw *hw, 1362 struct ieee80211_vif *vif) 1363 { 1364 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1365 1366 /* Due to a race condition, it's possible that mac80211 asks 1367 * us to stop a sched_scan when it's already stopped. This 1368 * can happen, for instance, if we stopped the scan ourselves, 1369 * called ieee80211_sched_scan_stopped() and the userspace called 1370 * stop sched scan before ieee80211_sched_scan_stopped_work() 1371 * could run. To handle this, simply return if the scan is 1372 * not running. 1373 */ 1374 if (!(mld->scan.status & IWL_MLD_SCAN_SCHED)) 1375 return 0; 1376 1377 return iwl_mld_scan_stop(mld, IWL_MLD_SCAN_SCHED, false); 1378 } 1379 1380 static void 1381 iwl_mld_restart_complete_vif(void *data, u8 *mac, struct ieee80211_vif *vif) 1382 { 1383 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1384 struct ieee80211_bss_conf *link_conf; 1385 struct iwl_mld *mld = data; 1386 int link_id; 1387 1388 for_each_vif_active_link(vif, link_conf, link_id) { 1389 enum ieee80211_sta_rx_bandwidth bw; 1390 struct iwl_mld_link *mld_link; 1391 1392 mld_link = wiphy_dereference(mld->wiphy, 1393 mld_vif->link[link_id]); 1394 1395 if (WARN_ON_ONCE(!mld_link)) 1396 continue; 1397 1398 bw = mld_link->rx_omi.bw_in_progress; 1399 if (bw) 1400 iwl_mld_change_link_omi_bw(mld, link_conf, bw); 1401 } 1402 } 1403 1404 static void 1405 iwl_mld_mac80211_reconfig_complete(struct ieee80211_hw *hw, 1406 enum ieee80211_reconfig_type reconfig_type) 1407 { 1408 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1409 1410 switch (reconfig_type) { 1411 case IEEE80211_RECONFIG_TYPE_RESTART: 1412 mld->fw_status.in_hw_restart = false; 1413 iwl_mld_send_recovery_cmd(mld, ERROR_RECOVERY_END_OF_RECOVERY); 1414 1415 ieee80211_iterate_interfaces(mld->hw, 1416 IEEE80211_IFACE_ITER_NORMAL, 1417 iwl_mld_restart_complete_vif, mld); 1418 1419 iwl_trans_finish_sw_reset(mld->trans); 1420 /* no need to lock, adding in parallel would schedule too */ 1421 if (!list_empty(&mld->txqs_to_add)) 1422 wiphy_work_queue(mld->wiphy, &mld->add_txqs_wk); 1423 1424 IWL_INFO(mld, "restart completed\n"); 1425 break; 1426 case IEEE80211_RECONFIG_TYPE_SUSPEND: 1427 break; 1428 } 1429 } 1430 1431 static 1432 void iwl_mld_mac80211_mgd_prepare_tx(struct ieee80211_hw *hw, 1433 struct ieee80211_vif *vif, 1434 struct ieee80211_prep_tx_info *info) 1435 { 1436 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1437 u32 duration = IWL_MLD_SESSION_PROTECTION_ASSOC_TIME_MS; 1438 1439 /* After a successful association the connection is etalibeshed 1440 * and we can rely on the quota to send the disassociation frame. 1441 */ 1442 if (info->was_assoc) 1443 return; 1444 1445 if (info->duration > duration) 1446 duration = info->duration; 1447 1448 iwl_mld_schedule_session_protection(mld, vif, duration, 1449 IWL_MLD_SESSION_PROTECTION_MIN_TIME_MS, 1450 info->link_id); 1451 } 1452 1453 static 1454 void iwl_mld_mac_mgd_complete_tx(struct ieee80211_hw *hw, 1455 struct ieee80211_vif *vif, 1456 struct ieee80211_prep_tx_info *info) 1457 { 1458 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1459 1460 /* Successful authentication is the only case that requires to let 1461 * the session protection go. We'll need it for the upcoming 1462 * association. For all the other cases, we need to cancel the session 1463 * protection. 1464 * After successful association the connection is established and 1465 * further mgd tx can rely on the quota. 1466 */ 1467 if (info->success && info->subtype == IEEE80211_STYPE_AUTH) 1468 return; 1469 1470 /* The firmware will be on medium after we configure the vif as 1471 * associated. Removing the session protection allows the firmware 1472 * to stop being on medium. In order to ensure the continuity of our 1473 * presence on medium, we need first to configure the vif as associated 1474 * and only then, remove the session protection. 1475 * Currently, mac80211 calls vif_cfg_changed() first and then, 1476 * drv_mgd_complete_tx(). Ensure that this assumption stays true by 1477 * a warning. 1478 */ 1479 WARN_ON(info->success && 1480 (info->subtype == IEEE80211_STYPE_ASSOC_REQ || 1481 info->subtype == IEEE80211_STYPE_REASSOC_REQ) && 1482 !vif->cfg.assoc); 1483 1484 iwl_mld_cancel_session_protection(mld, vif, info->link_id); 1485 } 1486 1487 static int 1488 iwl_mld_mac80211_conf_tx(struct ieee80211_hw *hw, 1489 struct ieee80211_vif *vif, 1490 unsigned int link_id, u16 ac, 1491 const struct ieee80211_tx_queue_params *params) 1492 { 1493 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1494 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1495 struct iwl_mld_link *link; 1496 1497 lockdep_assert_wiphy(mld->wiphy); 1498 1499 link = iwl_mld_link_dereference_check(mld_vif, link_id); 1500 if (!link) 1501 return -EINVAL; 1502 1503 link->queue_params[ac] = *params; 1504 1505 /* No need to update right away, we'll get BSS_CHANGED_QOS 1506 * The exception is P2P_DEVICE interface which needs immediate update. 1507 */ 1508 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 1509 iwl_mld_change_link_in_fw(mld, &vif->bss_conf, 1510 LINK_CONTEXT_MODIFY_QOS_PARAMS); 1511 1512 return 0; 1513 } 1514 1515 static void iwl_mld_set_uapsd(struct iwl_mld *mld, struct ieee80211_vif *vif) 1516 { 1517 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 1518 1519 if (vif->type != NL80211_IFTYPE_STATION) 1520 return; 1521 1522 if (vif->p2p && 1523 !(iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_P2P_CLIENT)) 1524 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 1525 1526 if (!vif->p2p && 1527 !(iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) 1528 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 1529 } 1530 1531 int iwl_mld_tdls_sta_count(struct iwl_mld *mld) 1532 { 1533 int count = 0; 1534 1535 lockdep_assert_wiphy(mld->wiphy); 1536 1537 for (int i = 0; i < mld->fw->ucode_capa.num_stations; i++) { 1538 struct ieee80211_link_sta *link_sta; 1539 1540 link_sta = wiphy_dereference(mld->wiphy, 1541 mld->fw_id_to_link_sta[i]); 1542 if (IS_ERR_OR_NULL(link_sta)) 1543 continue; 1544 1545 if (!link_sta->sta->tdls) 1546 continue; 1547 1548 count++; 1549 } 1550 1551 return count; 1552 } 1553 1554 static void iwl_mld_check_he_obss_narrow_bw_ru_iter(struct wiphy *wiphy, 1555 struct cfg80211_bss *bss, 1556 void *_data) 1557 { 1558 bool *tolerated = _data; 1559 const struct cfg80211_bss_ies *ies; 1560 const struct element *elem; 1561 1562 rcu_read_lock(); 1563 ies = rcu_dereference(bss->ies); 1564 elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, ies->data, 1565 ies->len); 1566 1567 if (!elem || elem->datalen < 10 || 1568 !(elem->data[10] & 1569 WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT)) { 1570 *tolerated = false; 1571 } 1572 rcu_read_unlock(); 1573 } 1574 1575 static void 1576 iwl_mld_check_he_obss_narrow_bw_ru(struct iwl_mld *mld, 1577 struct iwl_mld_link *mld_link, 1578 struct ieee80211_bss_conf *link_conf) 1579 { 1580 bool tolerated = true; 1581 1582 if (WARN_ON_ONCE(!link_conf->chanreq.oper.chan)) 1583 return; 1584 1585 if (!(link_conf->chanreq.oper.chan->flags & IEEE80211_CHAN_RADAR)) { 1586 mld_link->he_ru_2mhz_block = false; 1587 return; 1588 } 1589 1590 cfg80211_bss_iter(mld->wiphy, &link_conf->chanreq.oper, 1591 iwl_mld_check_he_obss_narrow_bw_ru_iter, &tolerated); 1592 1593 /* If there is at least one AP on radar channel that cannot 1594 * tolerate 26-tone RU UL OFDMA transmissions using HE TB PPDU. 1595 */ 1596 mld_link->he_ru_2mhz_block = !tolerated; 1597 } 1598 1599 static void iwl_mld_link_set_2mhz_block(struct iwl_mld *mld, 1600 struct ieee80211_vif *vif, 1601 struct ieee80211_sta *sta) 1602 { 1603 struct ieee80211_link_sta *link_sta; 1604 unsigned int link_id; 1605 1606 for_each_sta_active_link(vif, sta, link_sta, link_id) { 1607 struct ieee80211_bss_conf *link_conf = 1608 link_conf_dereference_protected(vif, link_id); 1609 struct iwl_mld_link *mld_link = 1610 iwl_mld_link_from_mac80211(link_conf); 1611 1612 if (WARN_ON(!link_conf || !mld_link)) 1613 continue; 1614 1615 if (link_sta->he_cap.has_he) 1616 iwl_mld_check_he_obss_narrow_bw_ru(mld, mld_link, 1617 link_conf); 1618 } 1619 } 1620 1621 static int iwl_mld_move_sta_state_up(struct iwl_mld *mld, 1622 struct ieee80211_vif *vif, 1623 struct ieee80211_sta *sta, 1624 enum ieee80211_sta_state old_state, 1625 enum ieee80211_sta_state new_state) 1626 { 1627 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1628 int tdls_count = 0; 1629 int ret; 1630 1631 if (old_state == IEEE80211_STA_NOTEXIST && 1632 new_state == IEEE80211_STA_NONE) { 1633 if (sta->tdls) { 1634 if (vif->p2p || hweight8(mld->used_phy_ids) != 1) 1635 return -EBUSY; 1636 1637 tdls_count = iwl_mld_tdls_sta_count(mld); 1638 if (tdls_count >= IWL_TDLS_STA_COUNT) 1639 return -EBUSY; 1640 } 1641 1642 /* 1643 * If this is the first STA (i.e. the AP) it won't do 1644 * anything, otherwise must leave for any new STA on 1645 * any other interface, or for TDLS, etc. 1646 * Need to call this _before_ adding the STA so it can 1647 * look up the one STA to use to ask mac80211 to leave 1648 * OMI; in the unlikely event that adding the new STA 1649 * then fails we'll just re-enter OMI later (via the 1650 * statistics notification handling.) 1651 */ 1652 iwl_mld_leave_omi_bw_reduction(mld); 1653 1654 ret = iwl_mld_add_sta(mld, sta, vif, STATION_TYPE_PEER); 1655 if (ret) 1656 return ret; 1657 1658 /* just added first TDLS STA, so disable PM */ 1659 if (sta->tdls && tdls_count == 0) 1660 iwl_mld_update_mac_power(mld, vif, false); 1661 1662 if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls) 1663 mld_vif->ap_sta = sta; 1664 1665 /* Initialize TLC here already - this really tells 1666 * the firmware only what the supported legacy rates are 1667 * (may be) since it's initialized already from what the 1668 * AP advertised in the beacon/probe response. This will 1669 * allow the firmware to send auth/assoc frames with one 1670 * of the supported rates already, rather than having to 1671 * use a mandatory rate. 1672 * If we're the AP, we'll just assume mandatory rates at 1673 * this point, but we know nothing about the STA anyway. 1674 */ 1675 iwl_mld_config_tlc(mld, vif, sta); 1676 1677 return ret; 1678 } else if (old_state == IEEE80211_STA_NONE && 1679 new_state == IEEE80211_STA_AUTH) { 1680 iwl_mld_set_uapsd(mld, vif); 1681 return 0; 1682 } else if (old_state == IEEE80211_STA_AUTH && 1683 new_state == IEEE80211_STA_ASSOC) { 1684 ret = iwl_mld_update_all_link_stations(mld, sta); 1685 1686 if (vif->type == NL80211_IFTYPE_STATION) 1687 iwl_mld_link_set_2mhz_block(mld, vif, sta); 1688 /* Now the link_sta's capabilities are set, update the FW */ 1689 iwl_mld_config_tlc(mld, vif, sta); 1690 1691 if (vif->type == NL80211_IFTYPE_AP) { 1692 /* Update MAC_CFG_FILTER_ACCEPT_BEACON if at least 1693 * one sta is associated 1694 */ 1695 if (++mld_vif->num_associated_stas == 1) 1696 ret = iwl_mld_mac_fw_action(mld, vif, 1697 FW_CTXT_ACTION_MODIFY); 1698 } 1699 1700 return ret; 1701 } else if (old_state == IEEE80211_STA_ASSOC && 1702 new_state == IEEE80211_STA_AUTHORIZED) { 1703 ret = 0; 1704 1705 if (!sta->tdls) { 1706 mld_vif->authorized = true; 1707 1708 /* Ensure any block due to a non-BSS link is synced */ 1709 iwl_mld_emlsr_check_non_bss_block(mld, 0); 1710 1711 /* Block EMLSR until a certain throughput it reached */ 1712 if (!mld->fw_status.in_hw_restart && 1713 IWL_MLD_ENTER_EMLSR_TPT_THRESH > 0) 1714 iwl_mld_block_emlsr(mld_vif->mld, vif, 1715 IWL_MLD_EMLSR_BLOCKED_TPT, 1716 0); 1717 1718 /* clear COEX_HIGH_PRIORITY_ENABLE */ 1719 ret = iwl_mld_mac_fw_action(mld, vif, 1720 FW_CTXT_ACTION_MODIFY); 1721 if (ret) 1722 return ret; 1723 iwl_mld_smps_wa(mld, vif, vif->cfg.ps); 1724 } 1725 1726 /* MFP is set by default before the station is authorized. 1727 * Clear it here in case it's not used. 1728 */ 1729 if (!sta->mfp) 1730 ret = iwl_mld_update_all_link_stations(mld, sta); 1731 1732 /* We can use wide bandwidth now, not only 20 MHz */ 1733 iwl_mld_config_tlc(mld, vif, sta); 1734 1735 return ret; 1736 } else { 1737 return -EINVAL; 1738 } 1739 } 1740 1741 static int iwl_mld_move_sta_state_down(struct iwl_mld *mld, 1742 struct ieee80211_vif *vif, 1743 struct ieee80211_sta *sta, 1744 enum ieee80211_sta_state old_state, 1745 enum ieee80211_sta_state new_state) 1746 { 1747 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1748 1749 if (old_state == IEEE80211_STA_AUTHORIZED && 1750 new_state == IEEE80211_STA_ASSOC) { 1751 if (!sta->tdls) { 1752 mld_vif->authorized = false; 1753 1754 memset(&mld_vif->emlsr.zeroed_on_not_authorized, 0, 1755 sizeof(mld_vif->emlsr.zeroed_on_not_authorized)); 1756 1757 wiphy_delayed_work_cancel(mld->wiphy, 1758 &mld_vif->emlsr.prevent_done_wk); 1759 wiphy_delayed_work_cancel(mld->wiphy, 1760 &mld_vif->emlsr.tmp_non_bss_done_wk); 1761 wiphy_work_cancel(mld->wiphy, &mld_vif->emlsr.unblock_tpt_wk); 1762 wiphy_delayed_work_cancel(mld->wiphy, 1763 &mld_vif->emlsr.check_tpt_wk); 1764 1765 iwl_mld_reset_cca_40mhz_workaround(mld, vif); 1766 iwl_mld_smps_wa(mld, vif, true); 1767 } 1768 1769 /* once we move into assoc state, need to update the FW to 1770 * stop using wide bandwidth 1771 */ 1772 iwl_mld_config_tlc(mld, vif, sta); 1773 } else if (old_state == IEEE80211_STA_ASSOC && 1774 new_state == IEEE80211_STA_AUTH) { 1775 if (vif->type == NL80211_IFTYPE_AP && 1776 !WARN_ON(!mld_vif->num_associated_stas)) { 1777 /* Update MAC_CFG_FILTER_ACCEPT_BEACON if the last sta 1778 * is disassociating 1779 */ 1780 if (--mld_vif->num_associated_stas == 0) 1781 iwl_mld_mac_fw_action(mld, vif, 1782 FW_CTXT_ACTION_MODIFY); 1783 } 1784 } else if (old_state == IEEE80211_STA_AUTH && 1785 new_state == IEEE80211_STA_NONE) { 1786 /* nothing */ 1787 } else if (old_state == IEEE80211_STA_NONE && 1788 new_state == IEEE80211_STA_NOTEXIST) { 1789 iwl_mld_remove_sta(mld, sta); 1790 1791 if (sta->tdls && iwl_mld_tdls_sta_count(mld) == 0) { 1792 /* just removed last TDLS STA, so enable PM */ 1793 iwl_mld_update_mac_power(mld, vif, false); 1794 } 1795 } else { 1796 return -EINVAL; 1797 } 1798 return 0; 1799 } 1800 1801 static int iwl_mld_mac80211_sta_state(struct ieee80211_hw *hw, 1802 struct ieee80211_vif *vif, 1803 struct ieee80211_sta *sta, 1804 enum ieee80211_sta_state old_state, 1805 enum ieee80211_sta_state new_state) 1806 { 1807 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1808 struct iwl_mld_sta *mld_sta = iwl_mld_sta_from_mac80211(sta); 1809 1810 IWL_DEBUG_MAC80211(mld, "station %pM state change %d->%d\n", 1811 sta->addr, old_state, new_state); 1812 1813 mld_sta->sta_state = new_state; 1814 1815 if (old_state < new_state) 1816 return iwl_mld_move_sta_state_up(mld, vif, sta, old_state, 1817 new_state); 1818 else 1819 return iwl_mld_move_sta_state_down(mld, vif, sta, old_state, 1820 new_state); 1821 } 1822 1823 static void iwl_mld_mac80211_flush(struct ieee80211_hw *hw, 1824 struct ieee80211_vif *vif, 1825 u32 queues, bool drop) 1826 { 1827 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1828 1829 /* Make sure we're done with the deferred traffic before flushing */ 1830 iwl_mld_add_txq_list(mld); 1831 1832 for (int i = 0; i < mld->fw->ucode_capa.num_stations; i++) { 1833 struct ieee80211_link_sta *link_sta = 1834 wiphy_dereference(mld->wiphy, 1835 mld->fw_id_to_link_sta[i]); 1836 1837 if (IS_ERR_OR_NULL(link_sta)) 1838 continue; 1839 1840 /* Check that the sta belongs to the given vif */ 1841 if (vif && vif != iwl_mld_sta_from_mac80211(link_sta->sta)->vif) 1842 continue; 1843 1844 if (drop) 1845 iwl_mld_flush_sta_txqs(mld, link_sta->sta); 1846 else 1847 iwl_mld_wait_sta_txqs_empty(mld, link_sta->sta); 1848 } 1849 } 1850 1851 static void iwl_mld_mac80211_flush_sta(struct ieee80211_hw *hw, 1852 struct ieee80211_vif *vif, 1853 struct ieee80211_sta *sta) 1854 { 1855 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1856 1857 iwl_mld_flush_sta_txqs(mld, sta); 1858 } 1859 1860 static int 1861 iwl_mld_mac80211_ampdu_action(struct ieee80211_hw *hw, 1862 struct ieee80211_vif *vif, 1863 struct ieee80211_ampdu_params *params) 1864 { 1865 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1866 struct ieee80211_sta *sta = params->sta; 1867 enum ieee80211_ampdu_mlme_action action = params->action; 1868 u16 tid = params->tid; 1869 u16 ssn = params->ssn; 1870 u16 buf_size = params->buf_size; 1871 u16 timeout = params->timeout; 1872 int ret; 1873 1874 IWL_DEBUG_HT(mld, "A-MPDU action on addr %pM tid: %d action: %d\n", 1875 sta->addr, tid, action); 1876 1877 switch (action) { 1878 case IEEE80211_AMPDU_RX_START: 1879 ret = iwl_mld_ampdu_rx_start(mld, sta, tid, ssn, buf_size, 1880 timeout); 1881 break; 1882 case IEEE80211_AMPDU_RX_STOP: 1883 ret = iwl_mld_ampdu_rx_stop(mld, sta, tid); 1884 break; 1885 default: 1886 /* The mac80211 TX_AMPDU_SETUP_IN_HW flag is set for all 1887 * devices, since all support TX A-MPDU offload in hardware. 1888 * Therefore, no TX action should be requested here. 1889 */ 1890 WARN_ON_ONCE(1); 1891 return -EINVAL; 1892 } 1893 1894 return ret; 1895 } 1896 1897 static bool iwl_mld_can_hw_csum(struct sk_buff *skb) 1898 { 1899 u8 protocol = ip_hdr(skb)->protocol; 1900 1901 return protocol == IPPROTO_TCP || protocol == IPPROTO_UDP; 1902 } 1903 1904 static bool iwl_mld_mac80211_can_aggregate(struct ieee80211_hw *hw, 1905 struct sk_buff *head, 1906 struct sk_buff *skb) 1907 { 1908 if (!IS_ENABLED(CONFIG_INET)) 1909 return false; 1910 1911 /* For now don't aggregate IPv6 in AMSDU */ 1912 if (skb->protocol != htons(ETH_P_IP)) 1913 return false; 1914 1915 /* Allow aggregation only if both frames have the same HW csum offload 1916 * capability, ensuring consistent HW or SW csum handling in A-MSDU. 1917 */ 1918 return iwl_mld_can_hw_csum(skb) == iwl_mld_can_hw_csum(head); 1919 } 1920 1921 static void iwl_mld_mac80211_sync_rx_queues(struct ieee80211_hw *hw) 1922 { 1923 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1924 1925 iwl_mld_sync_rx_queues(mld, IWL_MLD_RXQ_EMPTY, NULL, 0); 1926 } 1927 1928 static void iwl_mld_sta_rc_update(struct ieee80211_hw *hw, 1929 struct ieee80211_vif *vif, 1930 struct ieee80211_link_sta *link_sta, 1931 u32 changed) 1932 { 1933 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1934 1935 if (changed & (IEEE80211_RC_BW_CHANGED | 1936 IEEE80211_RC_SUPP_RATES_CHANGED | 1937 IEEE80211_RC_NSS_CHANGED)) { 1938 struct ieee80211_bss_conf *link = 1939 link_conf_dereference_check(vif, link_sta->link_id); 1940 1941 if (WARN_ON(!link)) 1942 return; 1943 1944 iwl_mld_config_tlc_link(mld, vif, link, link_sta); 1945 } 1946 } 1947 1948 #ifdef CONFIG_PM_SLEEP 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 #endif 2001 2002 static int iwl_mld_alloc_ptk_pn(struct iwl_mld *mld, 2003 struct iwl_mld_sta *mld_sta, 2004 struct ieee80211_key_conf *key, 2005 struct iwl_mld_ptk_pn **ptk_pn) 2006 { 2007 u8 num_rx_queues = mld->trans->num_rx_queues; 2008 int keyidx = key->keyidx; 2009 struct ieee80211_key_seq seq; 2010 2011 if (WARN_ON(keyidx >= ARRAY_SIZE(mld_sta->ptk_pn))) 2012 return -EINVAL; 2013 2014 WARN_ON(rcu_access_pointer(mld_sta->ptk_pn[keyidx])); 2015 *ptk_pn = kzalloc(struct_size(*ptk_pn, q, num_rx_queues), 2016 GFP_KERNEL); 2017 if (!*ptk_pn) 2018 return -ENOMEM; 2019 2020 for (u8 tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 2021 ieee80211_get_key_rx_seq(key, tid, &seq); 2022 for (u8 q = 0; q < num_rx_queues; q++) 2023 memcpy((*ptk_pn)->q[q].pn[tid], seq.ccmp.pn, 2024 IEEE80211_CCMP_PN_LEN); 2025 } 2026 2027 rcu_assign_pointer(mld_sta->ptk_pn[keyidx], *ptk_pn); 2028 2029 return 0; 2030 } 2031 2032 static int iwl_mld_set_key_add(struct iwl_mld *mld, 2033 struct ieee80211_vif *vif, 2034 struct ieee80211_sta *sta, 2035 struct ieee80211_key_conf *key) 2036 { 2037 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2038 struct iwl_mld_sta *mld_sta = 2039 sta ? iwl_mld_sta_from_mac80211(sta) : NULL; 2040 struct iwl_mld_ptk_pn *ptk_pn = NULL; 2041 int keyidx = key->keyidx; 2042 int ret; 2043 2044 /* Will be set to 0 if added successfully */ 2045 key->hw_key_idx = STA_KEY_IDX_INVALID; 2046 2047 switch (key->cipher) { 2048 case WLAN_CIPHER_SUITE_WEP40: 2049 case WLAN_CIPHER_SUITE_WEP104: 2050 IWL_DEBUG_MAC80211(mld, "Use SW encryption for WEP\n"); 2051 return -EOPNOTSUPP; 2052 case WLAN_CIPHER_SUITE_TKIP: 2053 if (vif->type == NL80211_IFTYPE_STATION) { 2054 key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE; 2055 break; 2056 } 2057 IWL_DEBUG_MAC80211(mld, "Use SW encryption for TKIP\n"); 2058 return -EOPNOTSUPP; 2059 case WLAN_CIPHER_SUITE_CCMP: 2060 case WLAN_CIPHER_SUITE_GCMP: 2061 case WLAN_CIPHER_SUITE_GCMP_256: 2062 case WLAN_CIPHER_SUITE_AES_CMAC: 2063 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2064 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2065 break; 2066 default: 2067 return -EOPNOTSUPP; 2068 } 2069 2070 if (vif->type == NL80211_IFTYPE_STATION && 2071 (keyidx == 6 || keyidx == 7)) 2072 rcu_assign_pointer(mld_vif->bigtks[keyidx - 6], key); 2073 2074 /* After exiting from RFKILL, hostapd configures GTK/ITGK before the 2075 * AP is started, but those keys can't be sent to the FW before the 2076 * MCAST/BCAST STAs are added to it (which happens upon AP start). 2077 * Store it here to be sent later when the AP is started. 2078 */ 2079 if ((vif->type == NL80211_IFTYPE_ADHOC || 2080 vif->type == NL80211_IFTYPE_AP) && !sta && 2081 !mld_vif->ap_ibss_active) 2082 return iwl_mld_store_ap_early_key(mld, key, mld_vif); 2083 2084 if (!mld->fw_status.in_hw_restart && mld_sta && 2085 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 2086 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 2087 key->cipher == WLAN_CIPHER_SUITE_GCMP || 2088 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 2089 ret = iwl_mld_alloc_ptk_pn(mld, mld_sta, key, &ptk_pn); 2090 if (ret) 2091 return ret; 2092 } 2093 2094 IWL_DEBUG_MAC80211(mld, "set hwcrypto key (sta:%pM, id:%d)\n", 2095 sta ? sta->addr : NULL, keyidx); 2096 2097 ret = iwl_mld_add_key(mld, vif, sta, key); 2098 if (ret) { 2099 IWL_WARN(mld, "set key failed (%d)\n", ret); 2100 if (ptk_pn) { 2101 RCU_INIT_POINTER(mld_sta->ptk_pn[keyidx], NULL); 2102 kfree(ptk_pn); 2103 } 2104 2105 return -EOPNOTSUPP; 2106 } 2107 2108 return 0; 2109 } 2110 2111 static void iwl_mld_set_key_remove(struct iwl_mld *mld, 2112 struct ieee80211_vif *vif, 2113 struct ieee80211_sta *sta, 2114 struct ieee80211_key_conf *key) 2115 { 2116 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2117 struct iwl_mld_sta *mld_sta = 2118 sta ? iwl_mld_sta_from_mac80211(sta) : NULL; 2119 int keyidx = key->keyidx; 2120 2121 if (vif->type == NL80211_IFTYPE_STATION && 2122 (keyidx == 6 || keyidx == 7)) 2123 RCU_INIT_POINTER(mld_vif->bigtks[keyidx - 6], NULL); 2124 2125 if (mld_sta && key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 2126 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 2127 key->cipher == WLAN_CIPHER_SUITE_GCMP || 2128 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 2129 struct iwl_mld_ptk_pn *ptk_pn; 2130 2131 if (WARN_ON(keyidx >= ARRAY_SIZE(mld_sta->ptk_pn))) 2132 return; 2133 2134 ptk_pn = wiphy_dereference(mld->wiphy, 2135 mld_sta->ptk_pn[keyidx]); 2136 RCU_INIT_POINTER(mld_sta->ptk_pn[keyidx], NULL); 2137 if (!WARN_ON(!ptk_pn)) 2138 kfree_rcu(ptk_pn, rcu_head); 2139 } 2140 2141 /* if this key was stored to be added later to the FW - free it here */ 2142 if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) 2143 iwl_mld_free_ap_early_key(mld, key, mld_vif); 2144 2145 /* We already removed it */ 2146 if (key->hw_key_idx == STA_KEY_IDX_INVALID) 2147 return; 2148 2149 IWL_DEBUG_MAC80211(mld, "disable hwcrypto key\n"); 2150 2151 iwl_mld_remove_key(mld, vif, sta, key); 2152 } 2153 2154 static int iwl_mld_mac80211_set_key(struct ieee80211_hw *hw, 2155 enum set_key_cmd cmd, 2156 struct ieee80211_vif *vif, 2157 struct ieee80211_sta *sta, 2158 struct ieee80211_key_conf *key) 2159 { 2160 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2161 int ret; 2162 2163 switch (cmd) { 2164 case SET_KEY: 2165 ret = iwl_mld_set_key_add(mld, vif, sta, key); 2166 if (ret) 2167 ret = -EOPNOTSUPP; 2168 break; 2169 case DISABLE_KEY: 2170 iwl_mld_set_key_remove(mld, vif, sta, key); 2171 ret = 0; 2172 break; 2173 default: 2174 ret = -EINVAL; 2175 break; 2176 } 2177 2178 return ret; 2179 } 2180 2181 static int 2182 iwl_mld_pre_channel_switch(struct ieee80211_hw *hw, 2183 struct ieee80211_vif *vif, 2184 struct ieee80211_channel_switch *chsw) 2185 { 2186 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2187 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2188 struct iwl_mld_link *mld_link = 2189 iwl_mld_link_dereference_check(mld_vif, chsw->link_id); 2190 u8 primary; 2191 int selected; 2192 2193 lockdep_assert_wiphy(mld->wiphy); 2194 2195 if (WARN_ON(!mld_link)) 2196 return -EINVAL; 2197 2198 IWL_DEBUG_MAC80211(mld, "pre CSA to freq %d\n", 2199 chsw->chandef.center_freq1); 2200 2201 if (!iwl_mld_emlsr_active(vif)) 2202 return 0; 2203 2204 primary = iwl_mld_get_primary_link(vif); 2205 2206 /* stay on the primary link unless it is undergoing a CSA with quiet */ 2207 if (chsw->link_id == primary && chsw->block_tx) 2208 selected = iwl_mld_get_other_link(vif, primary); 2209 else 2210 selected = primary; 2211 2212 /* Remember to tell the firmware that this link can't tx 2213 * Note that this logic seems to be unrelated to emlsr, but it 2214 * really is needed only when emlsr is active. When we have a 2215 * single link, the firmware will handle all this on its own. 2216 * In multi-link scenarios, we can learn about the CSA from 2217 * another link and this logic is too complex for the firmware 2218 * to track. 2219 * Since we want to de-activate the link that got a CSA with mode=1, 2220 * we need to tell the firmware not to send any frame on that link 2221 * as the firmware may not be aware that link is under a CSA 2222 * with mode=1 (no Tx allowed). 2223 */ 2224 mld_link->silent_deactivation = chsw->block_tx; 2225 iwl_mld_exit_emlsr(mld, vif, IWL_MLD_EMLSR_EXIT_CSA, selected); 2226 2227 return 0; 2228 } 2229 2230 static void 2231 iwl_mld_channel_switch(struct ieee80211_hw *hw, 2232 struct ieee80211_vif *vif, 2233 struct ieee80211_channel_switch *chsw) 2234 { 2235 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2236 2237 /* By implementing this operation, we prevent mac80211 from 2238 * starting its own channel switch timer, so that we can call 2239 * ieee80211_chswitch_done() ourselves at the right time 2240 * (Upon receiving the channel_switch_start notification from the fw) 2241 */ 2242 IWL_DEBUG_MAC80211(mld, 2243 "dummy channel switch op\n"); 2244 } 2245 2246 static int 2247 iwl_mld_post_channel_switch(struct ieee80211_hw *hw, 2248 struct ieee80211_vif *vif, 2249 struct ieee80211_bss_conf *link_conf) 2250 { 2251 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2252 struct iwl_mld_link *mld_link = iwl_mld_link_from_mac80211(link_conf); 2253 2254 lockdep_assert_wiphy(mld->wiphy); 2255 2256 WARN_ON(mld_link->silent_deactivation); 2257 2258 return 0; 2259 } 2260 2261 static void 2262 iwl_mld_abort_channel_switch(struct ieee80211_hw *hw, 2263 struct ieee80211_vif *vif, 2264 struct ieee80211_bss_conf *link_conf) 2265 { 2266 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2267 struct iwl_mld_link *mld_link = iwl_mld_link_from_mac80211(link_conf); 2268 2269 IWL_DEBUG_MAC80211(mld, 2270 "abort channel switch op\n"); 2271 mld_link->silent_deactivation = false; 2272 } 2273 2274 static int 2275 iwl_mld_switch_vif_chanctx_swap(struct ieee80211_hw *hw, 2276 struct ieee80211_vif_chanctx_switch *vifs) 2277 { 2278 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2279 int ret; 2280 2281 iwl_mld_unassign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2282 vifs[0].old_ctx); 2283 iwl_mld_remove_chanctx(hw, vifs[0].old_ctx); 2284 2285 ret = iwl_mld_add_chanctx(hw, vifs[0].new_ctx); 2286 if (ret) { 2287 IWL_ERR(mld, "failed to add new_ctx during channel switch\n"); 2288 goto out_reassign; 2289 } 2290 2291 ret = iwl_mld_assign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2292 vifs[0].new_ctx); 2293 if (ret) { 2294 IWL_ERR(mld, 2295 "failed to assign new_ctx during channel switch\n"); 2296 goto out_remove; 2297 } 2298 2299 return 0; 2300 2301 out_remove: 2302 iwl_mld_remove_chanctx(hw, vifs[0].new_ctx); 2303 out_reassign: 2304 if (iwl_mld_add_chanctx(hw, vifs[0].old_ctx)) { 2305 IWL_ERR(mld, "failed to add old_ctx after failure\n"); 2306 return ret; 2307 } 2308 2309 if (iwl_mld_assign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2310 vifs[0].old_ctx)) 2311 IWL_ERR(mld, "failed to reassign old_ctx after failure\n"); 2312 2313 return ret; 2314 } 2315 2316 static int 2317 iwl_mld_switch_vif_chanctx_reassign(struct ieee80211_hw *hw, 2318 struct ieee80211_vif_chanctx_switch *vifs) 2319 { 2320 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2321 int ret; 2322 2323 iwl_mld_unassign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2324 vifs[0].old_ctx); 2325 ret = iwl_mld_assign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2326 vifs[0].new_ctx); 2327 if (ret) { 2328 IWL_ERR(mld, 2329 "failed to assign new_ctx during channel switch\n"); 2330 goto out_reassign; 2331 } 2332 2333 return 0; 2334 2335 out_reassign: 2336 if (iwl_mld_assign_vif_chanctx(hw, vifs[0].vif, vifs[0].link_conf, 2337 vifs[0].old_ctx)) 2338 IWL_ERR(mld, "failed to reassign old_ctx after failure\n"); 2339 2340 return ret; 2341 } 2342 2343 static int 2344 iwl_mld_switch_vif_chanctx(struct ieee80211_hw *hw, 2345 struct ieee80211_vif_chanctx_switch *vifs, 2346 int n_vifs, 2347 enum ieee80211_chanctx_switch_mode mode) 2348 { 2349 int ret; 2350 2351 /* we only support a single-vif right now */ 2352 if (n_vifs > 1) 2353 return -EOPNOTSUPP; 2354 2355 switch (mode) { 2356 case CHANCTX_SWMODE_SWAP_CONTEXTS: 2357 ret = iwl_mld_switch_vif_chanctx_swap(hw, vifs); 2358 break; 2359 case CHANCTX_SWMODE_REASSIGN_VIF: 2360 ret = iwl_mld_switch_vif_chanctx_reassign(hw, vifs); 2361 break; 2362 default: 2363 ret = -EOPNOTSUPP; 2364 break; 2365 } 2366 2367 return ret; 2368 } 2369 2370 static void iwl_mld_sta_pre_rcu_remove(struct ieee80211_hw *hw, 2371 struct ieee80211_vif *vif, 2372 struct ieee80211_sta *sta) 2373 { 2374 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2375 struct iwl_mld_sta *mld_sta = iwl_mld_sta_from_mac80211(sta); 2376 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2377 struct iwl_mld_link_sta *mld_link_sta; 2378 u8 link_id; 2379 2380 lockdep_assert_wiphy(mld->wiphy); 2381 2382 /* This is called before mac80211 does RCU synchronisation, 2383 * so here we already invalidate our internal RCU-protected 2384 * station pointer. The rest of the code will thus no longer 2385 * be able to find the station this way, and we don't rely 2386 * on further RCU synchronisation after the sta_state() 2387 * callback deleted the station. 2388 */ 2389 for_each_mld_link_sta(mld_sta, mld_link_sta, link_id) 2390 RCU_INIT_POINTER(mld->fw_id_to_link_sta[mld_link_sta->fw_id], 2391 NULL); 2392 2393 if (sta == mld_vif->ap_sta) 2394 mld_vif->ap_sta = NULL; 2395 } 2396 2397 static void 2398 iwl_mld_mac80211_mgd_protect_tdls_discover(struct ieee80211_hw *hw, 2399 struct ieee80211_vif *vif, 2400 unsigned int link_id) 2401 { 2402 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2403 struct ieee80211_bss_conf *link_conf; 2404 u32 duration; 2405 int ret; 2406 2407 link_conf = wiphy_dereference(hw->wiphy, vif->link_conf[link_id]); 2408 if (WARN_ON_ONCE(!link_conf)) 2409 return; 2410 2411 /* Protect the session to hear the TDLS setup response on the channel */ 2412 2413 duration = 2 * link_conf->dtim_period * link_conf->beacon_int; 2414 2415 ret = iwl_mld_start_session_protection(mld, vif, duration, duration, 2416 link_id, HZ / 5); 2417 if (ret) 2418 IWL_ERR(mld, 2419 "Failed to start session protection for TDLS: %d\n", 2420 ret); 2421 } 2422 2423 static bool iwl_mld_can_activate_links(struct ieee80211_hw *hw, 2424 struct ieee80211_vif *vif, 2425 u16 desired_links) 2426 { 2427 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2428 int n_links = hweight16(desired_links); 2429 2430 /* Check if HW supports the wanted number of links */ 2431 return n_links <= iwl_mld_max_active_links(mld, vif); 2432 } 2433 2434 static int 2435 iwl_mld_change_vif_links(struct ieee80211_hw *hw, 2436 struct ieee80211_vif *vif, 2437 u16 old_links, u16 new_links, 2438 struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS]) 2439 { 2440 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2441 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2442 struct ieee80211_bss_conf *link_conf; 2443 u16 removed = old_links & ~new_links; 2444 u16 added = new_links & ~old_links; 2445 int err; 2446 2447 lockdep_assert_wiphy(mld->wiphy); 2448 2449 /* 2450 * No bits designate non-MLO mode. We can handle MLO exit/enter by 2451 * simply mapping that to link ID zero internally. 2452 * Note that mac80211 does such a non-MLO to MLO switch during restart 2453 * if it was in MLO before. In that case, we do not have a link to 2454 * remove. 2455 */ 2456 if (old_links == 0 && !mld->fw_status.in_hw_restart) 2457 removed |= BIT(0); 2458 2459 if (new_links == 0) 2460 added |= BIT(0); 2461 2462 for (int i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) { 2463 if (removed & BIT(i)) 2464 iwl_mld_remove_link(mld, old[i]); 2465 } 2466 2467 for (int i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) { 2468 if (added & BIT(i)) { 2469 link_conf = link_conf_dereference_protected(vif, i); 2470 if (WARN_ON(!link_conf)) 2471 return -EINVAL; 2472 2473 err = iwl_mld_add_link(mld, link_conf); 2474 if (err) 2475 goto remove_added_links; 2476 } 2477 } 2478 2479 /* 2480 * Ensure we always have a valid primary_link. When using multiple 2481 * links the proper value is set in assign_vif_chanctx. 2482 */ 2483 mld_vif->emlsr.primary = new_links ? __ffs(new_links) : 0; 2484 2485 /* 2486 * Special MLO restart case. We did not have a link when the interface 2487 * was added, so do the power configuration now. 2488 */ 2489 if (old_links == 0 && mld->fw_status.in_hw_restart) 2490 iwl_mld_update_mac_power(mld, vif, false); 2491 2492 return 0; 2493 2494 remove_added_links: 2495 for (int i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) { 2496 if (!(added & BIT(i))) 2497 continue; 2498 2499 link_conf = link_conf_dereference_protected(vif, i); 2500 if (!link_conf || !iwl_mld_link_from_mac80211(link_conf)) 2501 continue; 2502 2503 iwl_mld_remove_link(mld, link_conf); 2504 } 2505 2506 return err; 2507 } 2508 2509 static int iwl_mld_change_sta_links(struct ieee80211_hw *hw, 2510 struct ieee80211_vif *vif, 2511 struct ieee80211_sta *sta, 2512 u16 old_links, u16 new_links) 2513 { 2514 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2515 2516 return iwl_mld_update_link_stas(mld, vif, sta, old_links, new_links); 2517 } 2518 2519 static int iwl_mld_mac80211_join_ibss(struct ieee80211_hw *hw, 2520 struct ieee80211_vif *vif) 2521 { 2522 return iwl_mld_start_ap_ibss(hw, vif, &vif->bss_conf); 2523 } 2524 2525 static void iwl_mld_mac80211_leave_ibss(struct ieee80211_hw *hw, 2526 struct ieee80211_vif *vif) 2527 { 2528 return iwl_mld_stop_ap_ibss(hw, vif, &vif->bss_conf); 2529 } 2530 2531 static int iwl_mld_mac80211_tx_last_beacon(struct ieee80211_hw *hw) 2532 { 2533 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2534 2535 return mld->ibss_manager; 2536 } 2537 2538 #define IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS_TIMEOUT (5 * HZ) 2539 2540 static void iwl_mld_vif_iter_emlsr_block_tmp_non_bss(void *_data, u8 *mac, 2541 struct ieee80211_vif *vif) 2542 { 2543 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2544 int ret; 2545 2546 if (!iwl_mld_vif_has_emlsr_cap(vif)) 2547 return; 2548 2549 ret = iwl_mld_block_emlsr_sync(mld_vif->mld, vif, 2550 IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS, 2551 iwl_mld_get_primary_link(vif)); 2552 if (ret) 2553 return; 2554 2555 wiphy_delayed_work_queue(mld_vif->mld->wiphy, 2556 &mld_vif->emlsr.tmp_non_bss_done_wk, 2557 IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS_TIMEOUT); 2558 } 2559 2560 static void iwl_mld_prep_add_interface(struct ieee80211_hw *hw, 2561 enum nl80211_iftype type) 2562 { 2563 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2564 2565 IWL_DEBUG_MAC80211(mld, "prep_add_interface: type=%u\n", type); 2566 2567 if (!(type == NL80211_IFTYPE_AP || 2568 type == NL80211_IFTYPE_P2P_GO || 2569 type == NL80211_IFTYPE_P2P_CLIENT)) 2570 return; 2571 2572 ieee80211_iterate_active_interfaces_mtx(mld->hw, 2573 IEEE80211_IFACE_ITER_NORMAL, 2574 iwl_mld_vif_iter_emlsr_block_tmp_non_bss, 2575 NULL); 2576 } 2577 2578 static int iwl_mld_set_hw_timestamp(struct ieee80211_hw *hw, 2579 struct ieee80211_vif *vif, 2580 struct cfg80211_set_hw_timestamp *hwts) 2581 { 2582 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2583 u32 protocols = 0; 2584 2585 /* HW timestamping is only supported for a specific station */ 2586 if (!hwts->macaddr) 2587 return -EOPNOTSUPP; 2588 2589 if (hwts->enable) 2590 protocols = 2591 IWL_TIME_SYNC_PROTOCOL_TM | IWL_TIME_SYNC_PROTOCOL_FTM; 2592 2593 return iwl_mld_time_sync_config(mld, hwts->macaddr, protocols); 2594 } 2595 2596 static int iwl_mld_start_pmsr(struct ieee80211_hw *hw, 2597 struct ieee80211_vif *vif, 2598 struct cfg80211_pmsr_request *request) 2599 { 2600 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2601 2602 return iwl_mld_ftm_start(mld, vif, request); 2603 } 2604 2605 const struct ieee80211_ops iwl_mld_hw_ops = { 2606 .tx = iwl_mld_mac80211_tx, 2607 .start = iwl_mld_mac80211_start, 2608 .stop = iwl_mld_mac80211_stop, 2609 .config = iwl_mld_mac80211_config, 2610 .add_interface = iwl_mld_mac80211_add_interface, 2611 .remove_interface = iwl_mld_mac80211_remove_interface, 2612 .conf_tx = iwl_mld_mac80211_conf_tx, 2613 .prepare_multicast = iwl_mld_mac80211_prepare_multicast, 2614 .configure_filter = iwl_mld_mac80211_configure_filter, 2615 .reconfig_complete = iwl_mld_mac80211_reconfig_complete, 2616 .wake_tx_queue = iwl_mld_mac80211_wake_tx_queue, 2617 .add_chanctx = iwl_mld_add_chanctx, 2618 .remove_chanctx = iwl_mld_remove_chanctx, 2619 .change_chanctx = iwl_mld_change_chanctx, 2620 .assign_vif_chanctx = iwl_mld_assign_vif_chanctx, 2621 .unassign_vif_chanctx = iwl_mld_unassign_vif_chanctx, 2622 .set_rts_threshold = iwl_mld_mac80211_set_rts_threshold, 2623 .link_info_changed = iwl_mld_mac80211_link_info_changed, 2624 .vif_cfg_changed = iwl_mld_mac80211_vif_cfg_changed, 2625 .set_key = iwl_mld_mac80211_set_key, 2626 .hw_scan = iwl_mld_mac80211_hw_scan, 2627 .cancel_hw_scan = iwl_mld_mac80211_cancel_hw_scan, 2628 .sched_scan_start = iwl_mld_mac80211_sched_scan_start, 2629 .sched_scan_stop = iwl_mld_mac80211_sched_scan_stop, 2630 .mgd_prepare_tx = iwl_mld_mac80211_mgd_prepare_tx, 2631 .mgd_complete_tx = iwl_mld_mac_mgd_complete_tx, 2632 .sta_state = iwl_mld_mac80211_sta_state, 2633 .sta_statistics = iwl_mld_mac80211_sta_statistics, 2634 .flush = iwl_mld_mac80211_flush, 2635 .flush_sta = iwl_mld_mac80211_flush_sta, 2636 .ampdu_action = iwl_mld_mac80211_ampdu_action, 2637 .can_aggregate_in_amsdu = iwl_mld_mac80211_can_aggregate, 2638 .sync_rx_queues = iwl_mld_mac80211_sync_rx_queues, 2639 .link_sta_rc_update = iwl_mld_sta_rc_update, 2640 .start_ap = iwl_mld_start_ap_ibss, 2641 .stop_ap = iwl_mld_stop_ap_ibss, 2642 .pre_channel_switch = iwl_mld_pre_channel_switch, 2643 .channel_switch = iwl_mld_channel_switch, 2644 .post_channel_switch = iwl_mld_post_channel_switch, 2645 .abort_channel_switch = iwl_mld_abort_channel_switch, 2646 .switch_vif_chanctx = iwl_mld_switch_vif_chanctx, 2647 .sta_pre_rcu_remove = iwl_mld_sta_pre_rcu_remove, 2648 .remain_on_channel = iwl_mld_start_roc, 2649 .cancel_remain_on_channel = iwl_mld_cancel_roc, 2650 .can_activate_links = iwl_mld_can_activate_links, 2651 .change_vif_links = iwl_mld_change_vif_links, 2652 .change_sta_links = iwl_mld_change_sta_links, 2653 #ifdef CONFIG_PM_SLEEP 2654 .suspend = iwl_mld_suspend, 2655 .resume = iwl_mld_resume, 2656 .set_wakeup = iwl_mld_set_wakeup, 2657 .set_rekey_data = iwl_mld_set_rekey_data, 2658 #if IS_ENABLED(CONFIG_IPV6) 2659 .ipv6_addr_change = iwl_mld_ipv6_addr_change, 2660 #endif /* IS_ENABLED(CONFIG_IPV6) */ 2661 #endif /* CONFIG_PM_SLEEP */ 2662 #ifdef CONFIG_IWLWIFI_DEBUGFS 2663 .vif_add_debugfs = iwl_mld_add_vif_debugfs, 2664 .link_add_debugfs = iwl_mld_add_link_debugfs, 2665 .link_sta_add_debugfs = iwl_mld_add_link_sta_debugfs, 2666 #endif 2667 .mgd_protect_tdls_discover = iwl_mld_mac80211_mgd_protect_tdls_discover, 2668 .join_ibss = iwl_mld_mac80211_join_ibss, 2669 .leave_ibss = iwl_mld_mac80211_leave_ibss, 2670 .tx_last_beacon = iwl_mld_mac80211_tx_last_beacon, 2671 .prep_add_interface = iwl_mld_prep_add_interface, 2672 .set_hw_timestamp = iwl_mld_set_hw_timestamp, 2673 .start_pmsr = iwl_mld_start_pmsr, 2674 }; 2675