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 #endif 655 656 iwl_mld_rm_vif(mld, vif); 657 } 658 659 struct iwl_mld_mc_iter_data { 660 struct iwl_mld *mld; 661 int port_id; 662 }; 663 664 static void iwl_mld_mc_iface_iterator(void *data, u8 *mac, 665 struct ieee80211_vif *vif) 666 { 667 struct iwl_mld_mc_iter_data *mc_data = data; 668 struct iwl_mld *mld = mc_data->mld; 669 struct iwl_mcast_filter_cmd *cmd = mld->mcast_filter_cmd; 670 struct iwl_host_cmd hcmd = { 671 .id = MCAST_FILTER_CMD, 672 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 673 }; 674 int ret, len; 675 676 /* If we don't have free ports, mcast frames will be dropped */ 677 if (WARN_ON_ONCE(mc_data->port_id >= MAX_PORT_ID_NUM)) 678 return; 679 680 if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc) 681 return; 682 683 cmd->port_id = mc_data->port_id++; 684 ether_addr_copy(cmd->bssid, vif->bss_conf.bssid); 685 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4); 686 687 hcmd.len[0] = len; 688 hcmd.data[0] = cmd; 689 690 ret = iwl_mld_send_cmd(mld, &hcmd); 691 if (ret) 692 IWL_ERR(mld, "mcast filter cmd error. ret=%d\n", ret); 693 } 694 695 void iwl_mld_recalc_multicast_filter(struct iwl_mld *mld) 696 { 697 struct iwl_mld_mc_iter_data iter_data = { 698 .mld = mld, 699 }; 700 701 if (WARN_ON_ONCE(!mld->mcast_filter_cmd)) 702 return; 703 704 ieee80211_iterate_active_interfaces(mld->hw, 705 IEEE80211_IFACE_ITER_NORMAL, 706 iwl_mld_mc_iface_iterator, 707 &iter_data); 708 } 709 710 static u64 711 iwl_mld_mac80211_prepare_multicast(struct ieee80211_hw *hw, 712 struct netdev_hw_addr_list *mc_list) 713 { 714 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 715 struct iwl_mcast_filter_cmd *cmd; 716 struct netdev_hw_addr *addr; 717 int addr_count = netdev_hw_addr_list_count(mc_list); 718 bool pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES; 719 int len; 720 721 if (pass_all) 722 addr_count = 0; 723 724 /* len must be a multiple of 4 */ 725 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4); 726 cmd = kzalloc(len, GFP_ATOMIC); 727 if (!cmd) 728 return 0; 729 730 if (pass_all) { 731 cmd->pass_all = 1; 732 goto out; 733 } 734 735 netdev_hw_addr_list_for_each(addr, mc_list) { 736 IWL_DEBUG_MAC80211(mld, "mcast addr (%d): %pM\n", 737 cmd->count, addr->addr); 738 ether_addr_copy(&cmd->addr_list[cmd->count * ETH_ALEN], 739 addr->addr); 740 cmd->count++; 741 } 742 743 out: 744 return (u64)(unsigned long)cmd; 745 } 746 747 static 748 void iwl_mld_mac80211_configure_filter(struct ieee80211_hw *hw, 749 unsigned int changed_flags, 750 unsigned int *total_flags, 751 u64 multicast) 752 { 753 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 754 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast; 755 756 /* Replace previous configuration */ 757 kfree(mld->mcast_filter_cmd); 758 mld->mcast_filter_cmd = cmd; 759 760 if (!cmd) 761 goto out; 762 763 if (changed_flags & FIF_ALLMULTI) 764 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI); 765 766 if (cmd->pass_all) 767 cmd->count = 0; 768 769 iwl_mld_recalc_multicast_filter(mld); 770 out: 771 *total_flags = 0; 772 } 773 774 static 775 void iwl_mld_mac80211_wake_tx_queue(struct ieee80211_hw *hw, 776 struct ieee80211_txq *txq) 777 { 778 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 779 struct iwl_mld_txq *mld_txq = iwl_mld_txq_from_mac80211(txq); 780 781 if (likely(mld_txq->status.allocated) || !txq->sta) { 782 iwl_mld_tx_from_txq(mld, txq); 783 return; 784 } 785 786 /* We don't support TSPEC tids. %IEEE80211_NUM_TIDS is for mgmt */ 787 if (txq->tid != IEEE80211_NUM_TIDS && txq->tid >= IWL_MAX_TID_COUNT) { 788 IWL_DEBUG_MAC80211(mld, "TID %d is not supported\n", txq->tid); 789 return; 790 } 791 792 /* The worker will handle any packets we leave on the txq now */ 793 794 spin_lock_bh(&mld->add_txqs_lock); 795 /* The list is being deleted only after the queue is fully allocated. */ 796 if (list_empty(&mld_txq->list) && 797 /* recheck under lock, otherwise it can be added twice */ 798 !mld_txq->status.allocated) { 799 list_add_tail(&mld_txq->list, &mld->txqs_to_add); 800 wiphy_work_queue(mld->wiphy, &mld->add_txqs_wk); 801 } 802 spin_unlock_bh(&mld->add_txqs_lock); 803 } 804 805 static void iwl_mld_teardown_tdls_peers(struct iwl_mld *mld) 806 { 807 lockdep_assert_wiphy(mld->wiphy); 808 809 for (int i = 0; i < mld->fw->ucode_capa.num_stations; i++) { 810 struct ieee80211_link_sta *link_sta; 811 struct iwl_mld_sta *mld_sta; 812 813 link_sta = wiphy_dereference(mld->wiphy, 814 mld->fw_id_to_link_sta[i]); 815 if (IS_ERR_OR_NULL(link_sta)) 816 continue; 817 818 if (!link_sta->sta->tdls) 819 continue; 820 821 mld_sta = iwl_mld_sta_from_mac80211(link_sta->sta); 822 823 ieee80211_tdls_oper_request(mld_sta->vif, link_sta->addr, 824 NL80211_TDLS_TEARDOWN, 825 WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED, 826 GFP_KERNEL); 827 } 828 } 829 830 static 831 int iwl_mld_add_chanctx(struct ieee80211_hw *hw, 832 struct ieee80211_chanctx_conf *ctx) 833 { 834 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 835 struct iwl_mld_phy *phy = iwl_mld_phy_from_mac80211(ctx); 836 int fw_id = iwl_mld_allocate_fw_phy_id(mld); 837 int ret; 838 839 if (fw_id < 0) 840 return fw_id; 841 842 phy->mld = mld; 843 phy->fw_id = fw_id; 844 phy->chandef = *iwl_mld_get_chandef_from_chanctx(mld, ctx); 845 846 ret = iwl_mld_phy_fw_action(mld, ctx, FW_CTXT_ACTION_ADD); 847 if (ret) { 848 mld->used_phy_ids &= ~BIT(phy->fw_id); 849 return ret; 850 } 851 852 if (hweight8(mld->used_phy_ids) > 1) 853 iwl_mld_teardown_tdls_peers(mld); 854 855 return 0; 856 } 857 858 static 859 void iwl_mld_remove_chanctx(struct ieee80211_hw *hw, 860 struct ieee80211_chanctx_conf *ctx) 861 { 862 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 863 struct iwl_mld_phy *phy = iwl_mld_phy_from_mac80211(ctx); 864 865 iwl_mld_phy_fw_action(mld, ctx, FW_CTXT_ACTION_REMOVE); 866 mld->used_phy_ids &= ~BIT(phy->fw_id); 867 } 868 869 static 870 void iwl_mld_change_chanctx(struct ieee80211_hw *hw, 871 struct ieee80211_chanctx_conf *ctx, u32 changed) 872 { 873 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 874 struct iwl_mld_phy *phy = iwl_mld_phy_from_mac80211(ctx); 875 struct cfg80211_chan_def *chandef = 876 iwl_mld_get_chandef_from_chanctx(mld, ctx); 877 878 /* We don't care about these */ 879 if (!(changed & ~(IEEE80211_CHANCTX_CHANGE_RX_CHAINS | 880 IEEE80211_CHANCTX_CHANGE_RADAR | 881 IEEE80211_CHANCTX_CHANGE_CHANNEL))) 882 return; 883 884 /* Check if a FW update is required */ 885 886 if (changed & IEEE80211_CHANCTX_CHANGE_AP) 887 goto update; 888 889 if (chandef->chan == phy->chandef.chan && 890 chandef->center_freq1 == phy->chandef.center_freq1 && 891 chandef->punctured == phy->chandef.punctured) { 892 /* Check if we are toggling between HT and non-HT, no-op */ 893 if (phy->chandef.width == chandef->width || 894 (phy->chandef.width <= NL80211_CHAN_WIDTH_20 && 895 chandef->width <= NL80211_CHAN_WIDTH_20)) 896 return; 897 } 898 update: 899 phy->chandef = *chandef; 900 901 iwl_mld_phy_fw_action(mld, ctx, FW_CTXT_ACTION_MODIFY); 902 } 903 904 static u8 905 iwl_mld_chandef_get_primary_80(struct cfg80211_chan_def *chandef) 906 { 907 int data_start; 908 int control_start; 909 int bw; 910 911 if (chandef->width == NL80211_CHAN_WIDTH_320) 912 bw = 320; 913 else if (chandef->width == NL80211_CHAN_WIDTH_160) 914 bw = 160; 915 else 916 return 0; 917 918 /* data is bw wide so the start is half the width */ 919 data_start = chandef->center_freq1 - bw / 2; 920 /* control is 20Mhz width */ 921 control_start = chandef->chan->center_freq - 10; 922 923 return (control_start - data_start) / 80; 924 } 925 926 static bool iwl_mld_can_activate_link(struct iwl_mld *mld, 927 struct ieee80211_vif *vif, 928 struct ieee80211_bss_conf *link) 929 { 930 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 931 struct iwl_mld_sta *mld_sta; 932 struct iwl_mld_link_sta *link_sta; 933 934 /* In association, we activate the assoc link before adding the STA. */ 935 if (!mld_vif->ap_sta || !vif->cfg.assoc) 936 return true; 937 938 mld_sta = iwl_mld_sta_from_mac80211(mld_vif->ap_sta); 939 940 /* When switching links, we need to wait with the activation until the 941 * STA was added to the FW. It'll be activated in 942 * iwl_mld_update_link_stas 943 */ 944 link_sta = wiphy_dereference(mld->wiphy, mld_sta->link[link->link_id]); 945 946 /* In restart we can have a link_sta that doesn't exist in FW yet */ 947 return link_sta && link_sta->in_fw; 948 } 949 950 static 951 int iwl_mld_assign_vif_chanctx(struct ieee80211_hw *hw, 952 struct ieee80211_vif *vif, 953 struct ieee80211_bss_conf *link, 954 struct ieee80211_chanctx_conf *ctx) 955 { 956 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 957 struct iwl_mld_link *mld_link = iwl_mld_link_from_mac80211(link); 958 unsigned int n_active = iwl_mld_count_active_links(mld, vif); 959 int ret; 960 961 lockdep_assert_wiphy(mld->wiphy); 962 963 if (WARN_ON(!mld_link)) 964 return -EINVAL; 965 966 /* if the assigned one was not counted yet, count it now */ 967 if (!rcu_access_pointer(mld_link->chan_ctx)) { 968 n_active++; 969 970 /* Track addition of non-BSS link */ 971 if (ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_STATION) { 972 ret = iwl_mld_emlsr_check_non_bss_block(mld, 1); 973 if (ret) 974 return ret; 975 } 976 } 977 978 /* for AP, mac parameters such as HE support are updated at this stage. */ 979 if (vif->type == NL80211_IFTYPE_AP) { 980 ret = iwl_mld_mac_fw_action(mld, vif, FW_CTXT_ACTION_MODIFY); 981 982 if (ret) { 983 IWL_ERR(mld, "failed to update MAC %pM\n", vif->addr); 984 return -EINVAL; 985 } 986 } 987 988 rcu_assign_pointer(mld_link->chan_ctx, ctx); 989 990 if (n_active > 1) { 991 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 992 993 iwl_mld_leave_omi_bw_reduction(mld); 994 995 /* Indicate to mac80211 that EML is enabled */ 996 vif->driver_flags |= IEEE80211_VIF_EML_ACTIVE; 997 998 if (vif->active_links & BIT(mld_vif->emlsr.selected_links)) 999 mld_vif->emlsr.primary = mld_vif->emlsr.selected_primary; 1000 else 1001 mld_vif->emlsr.primary = __ffs(vif->active_links); 1002 1003 iwl_dbg_tlv_time_point(&mld->fwrt, IWL_FW_INI_TIME_ESR_LINK_UP, 1004 NULL); 1005 } 1006 1007 /* First send the link command with the phy context ID. 1008 * Now that we have the phy, we know the band so also the rates 1009 */ 1010 ret = iwl_mld_change_link_in_fw(mld, link, 1011 LINK_CONTEXT_MODIFY_RATES_INFO); 1012 if (ret) 1013 goto err; 1014 1015 /* TODO: Initialize rate control for the AP station, since we might be 1016 * doing a link switch here - we cannot initialize it before since 1017 * this needs the phy context assigned (and in FW?), and we cannot 1018 * do it later because it needs to be initialized as soon as we're 1019 * able to TX on the link, i.e. when active. (task=link-switch) 1020 */ 1021 1022 /* Now activate the link */ 1023 if (iwl_mld_can_activate_link(mld, vif, link)) { 1024 ret = iwl_mld_activate_link(mld, link); 1025 if (ret) 1026 goto err; 1027 } 1028 1029 if (vif->type == NL80211_IFTYPE_STATION) 1030 iwl_mld_send_ap_tx_power_constraint_cmd(mld, vif, link); 1031 1032 if (vif->type == NL80211_IFTYPE_MONITOR) { 1033 /* TODO: task=sniffer add sniffer station */ 1034 mld->monitor.p80 = 1035 iwl_mld_chandef_get_primary_80(&vif->bss_conf.chanreq.oper); 1036 } 1037 1038 return 0; 1039 err: 1040 RCU_INIT_POINTER(mld_link->chan_ctx, NULL); 1041 return ret; 1042 } 1043 1044 static 1045 void iwl_mld_unassign_vif_chanctx(struct ieee80211_hw *hw, 1046 struct ieee80211_vif *vif, 1047 struct ieee80211_bss_conf *link, 1048 struct ieee80211_chanctx_conf *ctx) 1049 { 1050 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1051 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1052 struct iwl_mld_link *mld_link = iwl_mld_link_from_mac80211(link); 1053 unsigned int n_active = iwl_mld_count_active_links(mld, vif); 1054 1055 if (WARN_ON(!mld_link)) 1056 return; 1057 1058 /* Track removal of non-BSS link */ 1059 if (ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_STATION) 1060 iwl_mld_emlsr_check_non_bss_block(mld, -1); 1061 1062 iwl_mld_deactivate_link(mld, link); 1063 1064 /* TODO: task=sniffer remove sniffer station */ 1065 1066 if (n_active > 1) { 1067 /* Indicate to mac80211 that EML is disabled */ 1068 vif->driver_flags &= ~IEEE80211_VIF_EML_ACTIVE; 1069 1070 iwl_dbg_tlv_time_point(&mld->fwrt, 1071 IWL_FW_INI_TIME_ESR_LINK_DOWN, 1072 NULL); 1073 } 1074 1075 RCU_INIT_POINTER(mld_link->chan_ctx, NULL); 1076 1077 /* in the non-MLO case, remove/re-add the link to clean up FW state. 1078 * In MLO, it'll be done in drv_change_vif_link 1079 */ 1080 if (!ieee80211_vif_is_mld(vif) && !mld_vif->ap_sta && 1081 !WARN_ON_ONCE(vif->cfg.assoc) && 1082 vif->type != NL80211_IFTYPE_AP && !mld->fw_status.in_hw_restart) { 1083 iwl_mld_remove_link(mld, link); 1084 iwl_mld_add_link(mld, link); 1085 } 1086 } 1087 1088 static 1089 int iwl_mld_mac80211_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 1090 { 1091 return 0; 1092 } 1093 1094 static void 1095 iwl_mld_link_info_changed_ap_ibss(struct iwl_mld *mld, 1096 struct ieee80211_vif *vif, 1097 struct ieee80211_bss_conf *link, 1098 u64 changes) 1099 { 1100 u32 link_changes = 0; 1101 1102 if (changes & BSS_CHANGED_ERP_SLOT) 1103 link_changes |= LINK_CONTEXT_MODIFY_RATES_INFO; 1104 1105 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT)) 1106 link_changes |= LINK_CONTEXT_MODIFY_PROTECT_FLAGS; 1107 1108 if (changes & (BSS_CHANGED_QOS | BSS_CHANGED_BANDWIDTH)) 1109 link_changes |= LINK_CONTEXT_MODIFY_QOS_PARAMS; 1110 1111 if (changes & BSS_CHANGED_HE_BSS_COLOR) 1112 link_changes |= LINK_CONTEXT_MODIFY_HE_PARAMS; 1113 1114 if (link_changes) 1115 iwl_mld_change_link_in_fw(mld, link, link_changes); 1116 1117 if (changes & BSS_CHANGED_BEACON) 1118 iwl_mld_update_beacon_template(mld, vif, link); 1119 } 1120 1121 static 1122 u32 iwl_mld_link_changed_mapping(struct iwl_mld *mld, 1123 struct ieee80211_vif *vif, 1124 struct ieee80211_bss_conf *link_conf, 1125 u64 changes) 1126 { 1127 u32 link_changes = 0; 1128 bool has_he, has_eht; 1129 1130 if (changes & BSS_CHANGED_QOS && vif->cfg.assoc && link_conf->qos) 1131 link_changes |= LINK_CONTEXT_MODIFY_QOS_PARAMS; 1132 1133 if (changes & (BSS_CHANGED_ERP_PREAMBLE | BSS_CHANGED_BASIC_RATES | 1134 BSS_CHANGED_ERP_SLOT)) 1135 link_changes |= LINK_CONTEXT_MODIFY_RATES_INFO; 1136 1137 if (changes & (BSS_CHANGED_HT | BSS_CHANGED_ERP_CTS_PROT)) 1138 link_changes |= LINK_CONTEXT_MODIFY_PROTECT_FLAGS; 1139 1140 /* TODO: task=MLO check mac80211's HE flags and if command is needed 1141 * every time there's a link change. Currently used flags are 1142 * BSS_CHANGED_HE_OBSS_PD and BSS_CHANGED_HE_BSS_COLOR. 1143 */ 1144 has_he = link_conf->he_support && !iwlwifi_mod_params.disable_11ax; 1145 has_eht = link_conf->eht_support && !iwlwifi_mod_params.disable_11be; 1146 1147 if (vif->cfg.assoc && (has_he || has_eht)) { 1148 IWL_DEBUG_MAC80211(mld, "Associated in HE mode\n"); 1149 link_changes |= LINK_CONTEXT_MODIFY_HE_PARAMS; 1150 } 1151 1152 return link_changes; 1153 } 1154 1155 static void 1156 iwl_mld_mac80211_link_info_changed_sta(struct iwl_mld *mld, 1157 struct ieee80211_vif *vif, 1158 struct ieee80211_bss_conf *link_conf, 1159 u64 changes) 1160 { 1161 u32 link_changes = iwl_mld_link_changed_mapping(mld, vif, link_conf, 1162 changes); 1163 1164 if (link_changes) 1165 iwl_mld_change_link_in_fw(mld, link_conf, link_changes); 1166 1167 if (changes & BSS_CHANGED_TPE) 1168 iwl_mld_send_ap_tx_power_constraint_cmd(mld, vif, link_conf); 1169 1170 if (changes & BSS_CHANGED_BEACON_INFO) 1171 iwl_mld_update_mac_power(mld, vif, false); 1172 1173 /* The firmware will wait quite a while after association before it 1174 * starts filtering the beacons. We can safely enable beacon filtering 1175 * upon CQM configuration, even if we didn't get a beacon yet. 1176 */ 1177 if (changes & (BSS_CHANGED_CQM | BSS_CHANGED_BEACON_INFO)) 1178 iwl_mld_enable_beacon_filter(mld, link_conf, false); 1179 1180 /* If we have used OMI before to reduce bandwidth to 80 MHz and then 1181 * increased to 160 MHz again, and then the AP changes to 320 MHz, it 1182 * will think that we're limited to 160 MHz right now. Update it by 1183 * requesting a new OMI bandwidth. 1184 */ 1185 if (changes & BSS_CHANGED_BANDWIDTH) { 1186 enum ieee80211_sta_rx_bandwidth bw; 1187 1188 bw = ieee80211_chan_width_to_rx_bw(link_conf->chanreq.oper.width); 1189 1190 iwl_mld_omi_ap_changed_bw(mld, link_conf, bw); 1191 1192 } 1193 1194 if (changes & BSS_CHANGED_BANDWIDTH) 1195 iwl_mld_retry_emlsr(mld, vif); 1196 } 1197 1198 static int iwl_mld_update_mu_groups(struct iwl_mld *mld, 1199 struct ieee80211_bss_conf *link_conf) 1200 { 1201 struct iwl_mu_group_mgmt_cmd cmd = {}; 1202 1203 BUILD_BUG_ON(sizeof(cmd.membership_status) != 1204 sizeof(link_conf->mu_group.membership)); 1205 BUILD_BUG_ON(sizeof(cmd.user_position) != 1206 sizeof(link_conf->mu_group.position)); 1207 1208 memcpy(cmd.membership_status, link_conf->mu_group.membership, 1209 WLAN_MEMBERSHIP_LEN); 1210 memcpy(cmd.user_position, link_conf->mu_group.position, 1211 WLAN_USER_POSITION_LEN); 1212 1213 return iwl_mld_send_cmd_pdu(mld, 1214 WIDE_ID(DATA_PATH_GROUP, 1215 UPDATE_MU_GROUPS_CMD), 1216 &cmd); 1217 } 1218 1219 static void 1220 iwl_mld_mac80211_link_info_changed(struct ieee80211_hw *hw, 1221 struct ieee80211_vif *vif, 1222 struct ieee80211_bss_conf *link_conf, 1223 u64 changes) 1224 { 1225 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1226 1227 switch (vif->type) { 1228 case NL80211_IFTYPE_STATION: 1229 iwl_mld_mac80211_link_info_changed_sta(mld, vif, link_conf, 1230 changes); 1231 break; 1232 case NL80211_IFTYPE_AP: 1233 case NL80211_IFTYPE_ADHOC: 1234 iwl_mld_link_info_changed_ap_ibss(mld, vif, link_conf, 1235 changes); 1236 break; 1237 case NL80211_IFTYPE_MONITOR: 1238 /* The firmware tracks this on its own in STATION mode, but 1239 * obviously not in sniffer mode. 1240 */ 1241 if (changes & BSS_CHANGED_MU_GROUPS) 1242 iwl_mld_update_mu_groups(mld, link_conf); 1243 break; 1244 default: 1245 /* shouldn't happen */ 1246 WARN_ON_ONCE(1); 1247 } 1248 1249 /* We now know our BSSID, we can configure the MAC context with 1250 * eht_support if needed. 1251 */ 1252 if (changes & BSS_CHANGED_BSSID) 1253 iwl_mld_mac_fw_action(mld, vif, FW_CTXT_ACTION_MODIFY); 1254 1255 if (changes & BSS_CHANGED_TXPOWER) 1256 iwl_mld_set_tx_power(mld, link_conf, link_conf->txpower); 1257 } 1258 1259 static void 1260 iwl_mld_smps_wa(struct iwl_mld *mld, struct ieee80211_vif *vif, bool enable) 1261 { 1262 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1263 1264 /* Send the device-level power commands since the 1265 * firmware checks the POWER_TABLE_CMD's POWER_SAVE_EN bit to 1266 * determine SMPS mode. 1267 */ 1268 if (mld_vif->ps_disabled == !enable) 1269 return; 1270 1271 mld_vif->ps_disabled = !enable; 1272 1273 iwl_mld_update_device_power(mld, false); 1274 } 1275 1276 static 1277 void iwl_mld_mac80211_vif_cfg_changed(struct ieee80211_hw *hw, 1278 struct ieee80211_vif *vif, 1279 u64 changes) 1280 { 1281 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1282 int ret; 1283 1284 lockdep_assert_wiphy(mld->wiphy); 1285 1286 if (vif->type != NL80211_IFTYPE_STATION) 1287 return; 1288 1289 if (changes & BSS_CHANGED_ASSOC) { 1290 ret = iwl_mld_mac_fw_action(mld, vif, FW_CTXT_ACTION_MODIFY); 1291 if (ret) 1292 IWL_ERR(mld, "failed to update context\n"); 1293 1294 if (vif->cfg.assoc) { 1295 /* Clear statistics to get clean beacon counter, and 1296 * ask for periodic statistics, as they are needed for 1297 * link selection and RX OMI decisions. 1298 */ 1299 iwl_mld_clear_stats_in_fw(mld); 1300 iwl_mld_request_periodic_fw_stats(mld, true); 1301 1302 iwl_mld_set_vif_associated(mld, vif); 1303 } else { 1304 iwl_mld_request_periodic_fw_stats(mld, false); 1305 } 1306 } 1307 1308 if (changes & BSS_CHANGED_PS) { 1309 iwl_mld_smps_wa(mld, vif, vif->cfg.ps); 1310 iwl_mld_update_mac_power(mld, vif, false); 1311 } 1312 1313 /* TODO: task=MLO BSS_CHANGED_MLD_VALID_LINKS/CHANGED_MLD_TTLM */ 1314 } 1315 1316 static int 1317 iwl_mld_mac80211_hw_scan(struct ieee80211_hw *hw, 1318 struct ieee80211_vif *vif, 1319 struct ieee80211_scan_request *hw_req) 1320 { 1321 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1322 1323 if (WARN_ON(!hw_req->req.n_channels || 1324 hw_req->req.n_channels > 1325 mld->fw->ucode_capa.n_scan_channels)) 1326 return -EINVAL; 1327 1328 return iwl_mld_regular_scan_start(mld, vif, &hw_req->req, &hw_req->ies); 1329 } 1330 1331 static void 1332 iwl_mld_mac80211_cancel_hw_scan(struct ieee80211_hw *hw, 1333 struct ieee80211_vif *vif) 1334 { 1335 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1336 1337 /* Due to a race condition, it's possible that mac80211 asks 1338 * us to stop a hw_scan when it's already stopped. This can 1339 * happen, for instance, if we stopped the scan ourselves, 1340 * called ieee80211_scan_completed() and the userspace called 1341 * cancel scan before ieee80211_scan_work() could run. 1342 * To handle that, simply return if the scan is not running. 1343 */ 1344 if (mld->scan.status & IWL_MLD_SCAN_REGULAR) 1345 iwl_mld_scan_stop(mld, IWL_MLD_SCAN_REGULAR, true); 1346 } 1347 1348 static int 1349 iwl_mld_mac80211_sched_scan_start(struct ieee80211_hw *hw, 1350 struct ieee80211_vif *vif, 1351 struct cfg80211_sched_scan_request *req, 1352 struct ieee80211_scan_ies *ies) 1353 { 1354 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1355 1356 return iwl_mld_sched_scan_start(mld, vif, req, ies, IWL_MLD_SCAN_SCHED); 1357 } 1358 1359 static int 1360 iwl_mld_mac80211_sched_scan_stop(struct ieee80211_hw *hw, 1361 struct ieee80211_vif *vif) 1362 { 1363 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1364 1365 /* Due to a race condition, it's possible that mac80211 asks 1366 * us to stop a sched_scan when it's already stopped. This 1367 * can happen, for instance, if we stopped the scan ourselves, 1368 * called ieee80211_sched_scan_stopped() and the userspace called 1369 * stop sched scan before ieee80211_sched_scan_stopped_work() 1370 * could run. To handle this, simply return if the scan is 1371 * not running. 1372 */ 1373 if (!(mld->scan.status & IWL_MLD_SCAN_SCHED)) 1374 return 0; 1375 1376 return iwl_mld_scan_stop(mld, IWL_MLD_SCAN_SCHED, false); 1377 } 1378 1379 static void 1380 iwl_mld_restart_complete_vif(void *data, u8 *mac, struct ieee80211_vif *vif) 1381 { 1382 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1383 struct ieee80211_bss_conf *link_conf; 1384 struct iwl_mld *mld = data; 1385 int link_id; 1386 1387 for_each_vif_active_link(vif, link_conf, link_id) { 1388 enum ieee80211_sta_rx_bandwidth bw; 1389 struct iwl_mld_link *mld_link; 1390 1391 mld_link = wiphy_dereference(mld->wiphy, 1392 mld_vif->link[link_id]); 1393 1394 if (WARN_ON_ONCE(!mld_link)) 1395 continue; 1396 1397 bw = mld_link->rx_omi.bw_in_progress; 1398 if (bw) 1399 iwl_mld_change_link_omi_bw(mld, link_conf, bw); 1400 } 1401 } 1402 1403 static void 1404 iwl_mld_mac80211_reconfig_complete(struct ieee80211_hw *hw, 1405 enum ieee80211_reconfig_type reconfig_type) 1406 { 1407 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1408 1409 switch (reconfig_type) { 1410 case IEEE80211_RECONFIG_TYPE_RESTART: 1411 mld->fw_status.in_hw_restart = false; 1412 iwl_mld_send_recovery_cmd(mld, ERROR_RECOVERY_END_OF_RECOVERY); 1413 1414 ieee80211_iterate_interfaces(mld->hw, 1415 IEEE80211_IFACE_ITER_NORMAL, 1416 iwl_mld_restart_complete_vif, mld); 1417 1418 iwl_trans_finish_sw_reset(mld->trans); 1419 /* no need to lock, adding in parallel would schedule too */ 1420 if (!list_empty(&mld->txqs_to_add)) 1421 wiphy_work_queue(mld->wiphy, &mld->add_txqs_wk); 1422 1423 IWL_INFO(mld, "restart completed\n"); 1424 break; 1425 case IEEE80211_RECONFIG_TYPE_SUSPEND: 1426 break; 1427 } 1428 } 1429 1430 static 1431 void iwl_mld_mac80211_mgd_prepare_tx(struct ieee80211_hw *hw, 1432 struct ieee80211_vif *vif, 1433 struct ieee80211_prep_tx_info *info) 1434 { 1435 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1436 u32 duration = IWL_MLD_SESSION_PROTECTION_ASSOC_TIME_MS; 1437 1438 /* After a successful association the connection is etalibeshed 1439 * and we can rely on the quota to send the disassociation frame. 1440 */ 1441 if (info->was_assoc) 1442 return; 1443 1444 if (info->duration > duration) 1445 duration = info->duration; 1446 1447 iwl_mld_schedule_session_protection(mld, vif, duration, 1448 IWL_MLD_SESSION_PROTECTION_MIN_TIME_MS, 1449 info->link_id); 1450 } 1451 1452 static 1453 void iwl_mld_mac_mgd_complete_tx(struct ieee80211_hw *hw, 1454 struct ieee80211_vif *vif, 1455 struct ieee80211_prep_tx_info *info) 1456 { 1457 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1458 1459 /* Successful authentication is the only case that requires to let 1460 * the session protection go. We'll need it for the upcoming 1461 * association. For all the other cases, we need to cancel the session 1462 * protection. 1463 * After successful association the connection is established and 1464 * further mgd tx can rely on the quota. 1465 */ 1466 if (info->success && info->subtype == IEEE80211_STYPE_AUTH) 1467 return; 1468 1469 /* The firmware will be on medium after we configure the vif as 1470 * associated. Removing the session protection allows the firmware 1471 * to stop being on medium. In order to ensure the continuity of our 1472 * presence on medium, we need first to configure the vif as associated 1473 * and only then, remove the session protection. 1474 * Currently, mac80211 calls vif_cfg_changed() first and then, 1475 * drv_mgd_complete_tx(). Ensure that this assumption stays true by 1476 * a warning. 1477 */ 1478 WARN_ON(info->success && 1479 (info->subtype == IEEE80211_STYPE_ASSOC_REQ || 1480 info->subtype == IEEE80211_STYPE_REASSOC_REQ) && 1481 !vif->cfg.assoc); 1482 1483 iwl_mld_cancel_session_protection(mld, vif, info->link_id); 1484 } 1485 1486 static int 1487 iwl_mld_mac80211_conf_tx(struct ieee80211_hw *hw, 1488 struct ieee80211_vif *vif, 1489 unsigned int link_id, u16 ac, 1490 const struct ieee80211_tx_queue_params *params) 1491 { 1492 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1493 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1494 struct iwl_mld_link *link; 1495 1496 lockdep_assert_wiphy(mld->wiphy); 1497 1498 link = iwl_mld_link_dereference_check(mld_vif, link_id); 1499 if (!link) 1500 return -EINVAL; 1501 1502 link->queue_params[ac] = *params; 1503 1504 /* No need to update right away, we'll get BSS_CHANGED_QOS 1505 * The exception is P2P_DEVICE interface which needs immediate update. 1506 */ 1507 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 1508 iwl_mld_change_link_in_fw(mld, &vif->bss_conf, 1509 LINK_CONTEXT_MODIFY_QOS_PARAMS); 1510 1511 return 0; 1512 } 1513 1514 static void iwl_mld_set_uapsd(struct iwl_mld *mld, struct ieee80211_vif *vif) 1515 { 1516 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 1517 1518 if (vif->type != NL80211_IFTYPE_STATION) 1519 return; 1520 1521 if (vif->p2p && 1522 !(iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_P2P_CLIENT)) 1523 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 1524 1525 if (!vif->p2p && 1526 !(iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) 1527 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 1528 } 1529 1530 int iwl_mld_tdls_sta_count(struct iwl_mld *mld) 1531 { 1532 int count = 0; 1533 1534 lockdep_assert_wiphy(mld->wiphy); 1535 1536 for (int i = 0; i < mld->fw->ucode_capa.num_stations; i++) { 1537 struct ieee80211_link_sta *link_sta; 1538 1539 link_sta = wiphy_dereference(mld->wiphy, 1540 mld->fw_id_to_link_sta[i]); 1541 if (IS_ERR_OR_NULL(link_sta)) 1542 continue; 1543 1544 if (!link_sta->sta->tdls) 1545 continue; 1546 1547 count++; 1548 } 1549 1550 return count; 1551 } 1552 1553 static void iwl_mld_check_he_obss_narrow_bw_ru_iter(struct wiphy *wiphy, 1554 struct cfg80211_bss *bss, 1555 void *_data) 1556 { 1557 bool *tolerated = _data; 1558 const struct cfg80211_bss_ies *ies; 1559 const struct element *elem; 1560 1561 rcu_read_lock(); 1562 ies = rcu_dereference(bss->ies); 1563 elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, ies->data, 1564 ies->len); 1565 1566 if (!elem || elem->datalen < 10 || 1567 !(elem->data[10] & 1568 WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT)) { 1569 *tolerated = false; 1570 } 1571 rcu_read_unlock(); 1572 } 1573 1574 static void 1575 iwl_mld_check_he_obss_narrow_bw_ru(struct iwl_mld *mld, 1576 struct iwl_mld_link *mld_link, 1577 struct ieee80211_bss_conf *link_conf) 1578 { 1579 bool tolerated = true; 1580 1581 if (WARN_ON_ONCE(!link_conf->chanreq.oper.chan)) 1582 return; 1583 1584 if (!(link_conf->chanreq.oper.chan->flags & IEEE80211_CHAN_RADAR)) { 1585 mld_link->he_ru_2mhz_block = false; 1586 return; 1587 } 1588 1589 cfg80211_bss_iter(mld->wiphy, &link_conf->chanreq.oper, 1590 iwl_mld_check_he_obss_narrow_bw_ru_iter, &tolerated); 1591 1592 /* If there is at least one AP on radar channel that cannot 1593 * tolerate 26-tone RU UL OFDMA transmissions using HE TB PPDU. 1594 */ 1595 mld_link->he_ru_2mhz_block = !tolerated; 1596 } 1597 1598 static void iwl_mld_link_set_2mhz_block(struct iwl_mld *mld, 1599 struct ieee80211_vif *vif, 1600 struct ieee80211_sta *sta) 1601 { 1602 struct ieee80211_link_sta *link_sta; 1603 unsigned int link_id; 1604 1605 for_each_sta_active_link(vif, sta, link_sta, link_id) { 1606 struct ieee80211_bss_conf *link_conf = 1607 link_conf_dereference_protected(vif, link_id); 1608 struct iwl_mld_link *mld_link = 1609 iwl_mld_link_from_mac80211(link_conf); 1610 1611 if (WARN_ON(!link_conf || !mld_link)) 1612 continue; 1613 1614 if (link_sta->he_cap.has_he) 1615 iwl_mld_check_he_obss_narrow_bw_ru(mld, mld_link, 1616 link_conf); 1617 } 1618 } 1619 1620 static int iwl_mld_move_sta_state_up(struct iwl_mld *mld, 1621 struct ieee80211_vif *vif, 1622 struct ieee80211_sta *sta, 1623 enum ieee80211_sta_state old_state, 1624 enum ieee80211_sta_state new_state) 1625 { 1626 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1627 int tdls_count = 0; 1628 int ret; 1629 1630 if (old_state == IEEE80211_STA_NOTEXIST && 1631 new_state == IEEE80211_STA_NONE) { 1632 if (sta->tdls) { 1633 if (vif->p2p || hweight8(mld->used_phy_ids) != 1) 1634 return -EBUSY; 1635 1636 tdls_count = iwl_mld_tdls_sta_count(mld); 1637 if (tdls_count >= IWL_TDLS_STA_COUNT) 1638 return -EBUSY; 1639 } 1640 1641 /* 1642 * If this is the first STA (i.e. the AP) it won't do 1643 * anything, otherwise must leave for any new STA on 1644 * any other interface, or for TDLS, etc. 1645 * Need to call this _before_ adding the STA so it can 1646 * look up the one STA to use to ask mac80211 to leave 1647 * OMI; in the unlikely event that adding the new STA 1648 * then fails we'll just re-enter OMI later (via the 1649 * statistics notification handling.) 1650 */ 1651 iwl_mld_leave_omi_bw_reduction(mld); 1652 1653 ret = iwl_mld_add_sta(mld, sta, vif, STATION_TYPE_PEER); 1654 if (ret) 1655 return ret; 1656 1657 /* just added first TDLS STA, so disable PM */ 1658 if (sta->tdls && tdls_count == 0) 1659 iwl_mld_update_mac_power(mld, vif, false); 1660 1661 if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls) 1662 mld_vif->ap_sta = sta; 1663 1664 /* Initialize TLC here already - this really tells 1665 * the firmware only what the supported legacy rates are 1666 * (may be) since it's initialized already from what the 1667 * AP advertised in the beacon/probe response. This will 1668 * allow the firmware to send auth/assoc frames with one 1669 * of the supported rates already, rather than having to 1670 * use a mandatory rate. 1671 * If we're the AP, we'll just assume mandatory rates at 1672 * this point, but we know nothing about the STA anyway. 1673 */ 1674 iwl_mld_config_tlc(mld, vif, sta); 1675 1676 return ret; 1677 } else if (old_state == IEEE80211_STA_NONE && 1678 new_state == IEEE80211_STA_AUTH) { 1679 iwl_mld_set_uapsd(mld, vif); 1680 return 0; 1681 } else if (old_state == IEEE80211_STA_AUTH && 1682 new_state == IEEE80211_STA_ASSOC) { 1683 ret = iwl_mld_update_all_link_stations(mld, sta); 1684 1685 if (vif->type == NL80211_IFTYPE_STATION) 1686 iwl_mld_link_set_2mhz_block(mld, vif, sta); 1687 /* Now the link_sta's capabilities are set, update the FW */ 1688 iwl_mld_config_tlc(mld, vif, sta); 1689 1690 if (vif->type == NL80211_IFTYPE_AP) { 1691 /* Update MAC_CFG_FILTER_ACCEPT_BEACON if at least 1692 * one sta is associated 1693 */ 1694 if (++mld_vif->num_associated_stas == 1) 1695 ret = iwl_mld_mac_fw_action(mld, vif, 1696 FW_CTXT_ACTION_MODIFY); 1697 } 1698 1699 return ret; 1700 } else if (old_state == IEEE80211_STA_ASSOC && 1701 new_state == IEEE80211_STA_AUTHORIZED) { 1702 ret = 0; 1703 1704 if (!sta->tdls) { 1705 mld_vif->authorized = true; 1706 1707 /* Ensure any block due to a non-BSS link is synced */ 1708 iwl_mld_emlsr_check_non_bss_block(mld, 0); 1709 1710 /* Block EMLSR until a certain throughput it reached */ 1711 if (!mld->fw_status.in_hw_restart && 1712 IWL_MLD_ENTER_EMLSR_TPT_THRESH > 0) 1713 iwl_mld_block_emlsr(mld_vif->mld, vif, 1714 IWL_MLD_EMLSR_BLOCKED_TPT, 1715 0); 1716 1717 /* clear COEX_HIGH_PRIORITY_ENABLE */ 1718 ret = iwl_mld_mac_fw_action(mld, vif, 1719 FW_CTXT_ACTION_MODIFY); 1720 if (ret) 1721 return ret; 1722 iwl_mld_smps_wa(mld, vif, vif->cfg.ps); 1723 } 1724 1725 /* MFP is set by default before the station is authorized. 1726 * Clear it here in case it's not used. 1727 */ 1728 if (!sta->mfp) 1729 ret = iwl_mld_update_all_link_stations(mld, sta); 1730 1731 /* We can use wide bandwidth now, not only 20 MHz */ 1732 iwl_mld_config_tlc(mld, vif, sta); 1733 1734 return ret; 1735 } else { 1736 return -EINVAL; 1737 } 1738 } 1739 1740 static int iwl_mld_move_sta_state_down(struct iwl_mld *mld, 1741 struct ieee80211_vif *vif, 1742 struct ieee80211_sta *sta, 1743 enum ieee80211_sta_state old_state, 1744 enum ieee80211_sta_state new_state) 1745 { 1746 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 1747 1748 if (old_state == IEEE80211_STA_AUTHORIZED && 1749 new_state == IEEE80211_STA_ASSOC) { 1750 if (!sta->tdls) { 1751 mld_vif->authorized = false; 1752 1753 memset(&mld_vif->emlsr.zeroed_on_not_authorized, 0, 1754 sizeof(mld_vif->emlsr.zeroed_on_not_authorized)); 1755 1756 wiphy_delayed_work_cancel(mld->wiphy, 1757 &mld_vif->emlsr.prevent_done_wk); 1758 wiphy_delayed_work_cancel(mld->wiphy, 1759 &mld_vif->emlsr.tmp_non_bss_done_wk); 1760 wiphy_work_cancel(mld->wiphy, &mld_vif->emlsr.unblock_tpt_wk); 1761 wiphy_delayed_work_cancel(mld->wiphy, 1762 &mld_vif->emlsr.check_tpt_wk); 1763 1764 iwl_mld_reset_cca_40mhz_workaround(mld, vif); 1765 iwl_mld_smps_wa(mld, vif, true); 1766 } 1767 1768 /* once we move into assoc state, need to update the FW to 1769 * stop using wide bandwidth 1770 */ 1771 iwl_mld_config_tlc(mld, vif, sta); 1772 } else if (old_state == IEEE80211_STA_ASSOC && 1773 new_state == IEEE80211_STA_AUTH) { 1774 if (vif->type == NL80211_IFTYPE_AP && 1775 !WARN_ON(!mld_vif->num_associated_stas)) { 1776 /* Update MAC_CFG_FILTER_ACCEPT_BEACON if the last sta 1777 * is disassociating 1778 */ 1779 if (--mld_vif->num_associated_stas == 0) 1780 iwl_mld_mac_fw_action(mld, vif, 1781 FW_CTXT_ACTION_MODIFY); 1782 } 1783 } else if (old_state == IEEE80211_STA_AUTH && 1784 new_state == IEEE80211_STA_NONE) { 1785 /* nothing */ 1786 } else if (old_state == IEEE80211_STA_NONE && 1787 new_state == IEEE80211_STA_NOTEXIST) { 1788 iwl_mld_remove_sta(mld, sta); 1789 1790 if (sta->tdls && iwl_mld_tdls_sta_count(mld) == 0) { 1791 /* just removed last TDLS STA, so enable PM */ 1792 iwl_mld_update_mac_power(mld, vif, false); 1793 } 1794 } else { 1795 return -EINVAL; 1796 } 1797 return 0; 1798 } 1799 1800 static int iwl_mld_mac80211_sta_state(struct ieee80211_hw *hw, 1801 struct ieee80211_vif *vif, 1802 struct ieee80211_sta *sta, 1803 enum ieee80211_sta_state old_state, 1804 enum ieee80211_sta_state new_state) 1805 { 1806 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1807 struct iwl_mld_sta *mld_sta = iwl_mld_sta_from_mac80211(sta); 1808 1809 IWL_DEBUG_MAC80211(mld, "station %pM state change %d->%d\n", 1810 sta->addr, old_state, new_state); 1811 1812 mld_sta->sta_state = new_state; 1813 1814 if (old_state < new_state) 1815 return iwl_mld_move_sta_state_up(mld, vif, sta, old_state, 1816 new_state); 1817 else 1818 return iwl_mld_move_sta_state_down(mld, vif, sta, old_state, 1819 new_state); 1820 } 1821 1822 static void iwl_mld_mac80211_flush(struct ieee80211_hw *hw, 1823 struct ieee80211_vif *vif, 1824 u32 queues, bool drop) 1825 { 1826 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1827 1828 /* Make sure we're done with the deferred traffic before flushing */ 1829 iwl_mld_add_txq_list(mld); 1830 1831 for (int i = 0; i < mld->fw->ucode_capa.num_stations; i++) { 1832 struct ieee80211_link_sta *link_sta = 1833 wiphy_dereference(mld->wiphy, 1834 mld->fw_id_to_link_sta[i]); 1835 1836 if (IS_ERR_OR_NULL(link_sta)) 1837 continue; 1838 1839 /* Check that the sta belongs to the given vif */ 1840 if (vif && vif != iwl_mld_sta_from_mac80211(link_sta->sta)->vif) 1841 continue; 1842 1843 if (drop) 1844 iwl_mld_flush_sta_txqs(mld, link_sta->sta); 1845 else 1846 iwl_mld_wait_sta_txqs_empty(mld, link_sta->sta); 1847 } 1848 } 1849 1850 static void iwl_mld_mac80211_flush_sta(struct ieee80211_hw *hw, 1851 struct ieee80211_vif *vif, 1852 struct ieee80211_sta *sta) 1853 { 1854 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1855 1856 iwl_mld_flush_sta_txqs(mld, sta); 1857 } 1858 1859 static int 1860 iwl_mld_mac80211_ampdu_action(struct ieee80211_hw *hw, 1861 struct ieee80211_vif *vif, 1862 struct ieee80211_ampdu_params *params) 1863 { 1864 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1865 struct ieee80211_sta *sta = params->sta; 1866 enum ieee80211_ampdu_mlme_action action = params->action; 1867 u16 tid = params->tid; 1868 u16 ssn = params->ssn; 1869 u16 buf_size = params->buf_size; 1870 u16 timeout = params->timeout; 1871 int ret; 1872 1873 IWL_DEBUG_HT(mld, "A-MPDU action on addr %pM tid: %d action: %d\n", 1874 sta->addr, tid, action); 1875 1876 switch (action) { 1877 case IEEE80211_AMPDU_RX_START: 1878 ret = iwl_mld_ampdu_rx_start(mld, sta, tid, ssn, buf_size, 1879 timeout); 1880 break; 1881 case IEEE80211_AMPDU_RX_STOP: 1882 ret = iwl_mld_ampdu_rx_stop(mld, sta, tid); 1883 break; 1884 default: 1885 /* The mac80211 TX_AMPDU_SETUP_IN_HW flag is set for all 1886 * devices, since all support TX A-MPDU offload in hardware. 1887 * Therefore, no TX action should be requested here. 1888 */ 1889 WARN_ON_ONCE(1); 1890 return -EINVAL; 1891 } 1892 1893 return ret; 1894 } 1895 1896 static bool iwl_mld_can_hw_csum(struct sk_buff *skb) 1897 { 1898 u8 protocol = ip_hdr(skb)->protocol; 1899 1900 return protocol == IPPROTO_TCP || protocol == IPPROTO_UDP; 1901 } 1902 1903 static bool iwl_mld_mac80211_can_aggregate(struct ieee80211_hw *hw, 1904 struct sk_buff *head, 1905 struct sk_buff *skb) 1906 { 1907 if (!IS_ENABLED(CONFIG_INET)) 1908 return false; 1909 1910 /* For now don't aggregate IPv6 in AMSDU */ 1911 if (skb->protocol != htons(ETH_P_IP)) 1912 return false; 1913 1914 /* Allow aggregation only if both frames have the same HW csum offload 1915 * capability, ensuring consistent HW or SW csum handling in A-MSDU. 1916 */ 1917 return iwl_mld_can_hw_csum(skb) == iwl_mld_can_hw_csum(head); 1918 } 1919 1920 static void iwl_mld_mac80211_sync_rx_queues(struct ieee80211_hw *hw) 1921 { 1922 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1923 1924 iwl_mld_sync_rx_queues(mld, IWL_MLD_RXQ_EMPTY, NULL, 0); 1925 } 1926 1927 static void iwl_mld_sta_rc_update(struct ieee80211_hw *hw, 1928 struct ieee80211_vif *vif, 1929 struct ieee80211_link_sta *link_sta, 1930 u32 changed) 1931 { 1932 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1933 1934 if (changed & (IEEE80211_RC_BW_CHANGED | 1935 IEEE80211_RC_SUPP_RATES_CHANGED | 1936 IEEE80211_RC_NSS_CHANGED)) { 1937 struct ieee80211_bss_conf *link = 1938 link_conf_dereference_check(vif, link_sta->link_id); 1939 1940 if (WARN_ON(!link)) 1941 return; 1942 1943 iwl_mld_config_tlc_link(mld, vif, link, link_sta); 1944 } 1945 } 1946 1947 #ifdef CONFIG_PM_SLEEP 1948 static void iwl_mld_set_wakeup(struct ieee80211_hw *hw, bool enabled) 1949 { 1950 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1951 1952 device_set_wakeup_enable(mld->trans->dev, enabled); 1953 } 1954 1955 /* Returns 0 on success. 1 if failed to suspend with wowlan: 1956 * If the circumstances didn't satisfy the conditions for suspension 1957 * with wowlan, mac80211 would use the no_wowlan flow. 1958 * If an error had occurred we update the trans status and state here 1959 * and the result will be stopping the FW. 1960 */ 1961 static int 1962 iwl_mld_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1963 { 1964 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1965 int ret; 1966 1967 iwl_fw_runtime_suspend(&mld->fwrt); 1968 1969 ret = iwl_mld_wowlan_suspend(mld, wowlan); 1970 if (ret) { 1971 if (ret < 0) { 1972 mld->trans->state = IWL_TRANS_NO_FW; 1973 set_bit(STATUS_FW_ERROR, &mld->trans->status); 1974 } 1975 return 1; 1976 } 1977 1978 if (iwl_mld_no_wowlan_suspend(mld)) 1979 return 1; 1980 1981 return 0; 1982 } 1983 1984 static int iwl_mld_resume(struct ieee80211_hw *hw) 1985 { 1986 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 1987 int ret; 1988 1989 ret = iwl_mld_wowlan_resume(mld); 1990 if (ret) 1991 return ret; 1992 1993 iwl_fw_runtime_resume(&mld->fwrt); 1994 1995 iwl_mld_low_latency_restart(mld); 1996 1997 return 0; 1998 } 1999 #endif 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 iwl_mld_remove_link(mld, old[i]); 2464 } 2465 2466 for (int i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) { 2467 if (added & BIT(i)) { 2468 link_conf = link_conf_dereference_protected(vif, i); 2469 if (WARN_ON(!link_conf)) 2470 return -EINVAL; 2471 2472 err = iwl_mld_add_link(mld, link_conf); 2473 if (err) 2474 goto remove_added_links; 2475 } 2476 } 2477 2478 /* 2479 * Ensure we always have a valid primary_link. When using multiple 2480 * links the proper value is set in assign_vif_chanctx. 2481 */ 2482 mld_vif->emlsr.primary = new_links ? __ffs(new_links) : 0; 2483 2484 /* 2485 * Special MLO restart case. We did not have a link when the interface 2486 * was added, so do the power configuration now. 2487 */ 2488 if (old_links == 0 && mld->fw_status.in_hw_restart) 2489 iwl_mld_update_mac_power(mld, vif, false); 2490 2491 return 0; 2492 2493 remove_added_links: 2494 for (int i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) { 2495 if (!(added & BIT(i))) 2496 continue; 2497 2498 link_conf = link_conf_dereference_protected(vif, i); 2499 if (!link_conf || !iwl_mld_link_from_mac80211(link_conf)) 2500 continue; 2501 2502 iwl_mld_remove_link(mld, link_conf); 2503 } 2504 2505 return err; 2506 } 2507 2508 static int iwl_mld_change_sta_links(struct ieee80211_hw *hw, 2509 struct ieee80211_vif *vif, 2510 struct ieee80211_sta *sta, 2511 u16 old_links, u16 new_links) 2512 { 2513 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2514 2515 return iwl_mld_update_link_stas(mld, vif, sta, old_links, new_links); 2516 } 2517 2518 static int iwl_mld_mac80211_join_ibss(struct ieee80211_hw *hw, 2519 struct ieee80211_vif *vif) 2520 { 2521 return iwl_mld_start_ap_ibss(hw, vif, &vif->bss_conf); 2522 } 2523 2524 static void iwl_mld_mac80211_leave_ibss(struct ieee80211_hw *hw, 2525 struct ieee80211_vif *vif) 2526 { 2527 return iwl_mld_stop_ap_ibss(hw, vif, &vif->bss_conf); 2528 } 2529 2530 static int iwl_mld_mac80211_tx_last_beacon(struct ieee80211_hw *hw) 2531 { 2532 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2533 2534 return mld->ibss_manager; 2535 } 2536 2537 #define IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS_TIMEOUT (5 * HZ) 2538 2539 static void iwl_mld_vif_iter_emlsr_block_tmp_non_bss(void *_data, u8 *mac, 2540 struct ieee80211_vif *vif) 2541 { 2542 struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); 2543 int ret; 2544 2545 if (!iwl_mld_vif_has_emlsr_cap(vif)) 2546 return; 2547 2548 ret = iwl_mld_block_emlsr_sync(mld_vif->mld, vif, 2549 IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS, 2550 iwl_mld_get_primary_link(vif)); 2551 if (ret) 2552 return; 2553 2554 wiphy_delayed_work_queue(mld_vif->mld->wiphy, 2555 &mld_vif->emlsr.tmp_non_bss_done_wk, 2556 IWL_MLD_EMLSR_BLOCKED_TMP_NON_BSS_TIMEOUT); 2557 } 2558 2559 static void iwl_mld_prep_add_interface(struct ieee80211_hw *hw, 2560 enum nl80211_iftype type) 2561 { 2562 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2563 2564 IWL_DEBUG_MAC80211(mld, "prep_add_interface: type=%u\n", type); 2565 2566 if (!(type == NL80211_IFTYPE_AP || 2567 type == NL80211_IFTYPE_P2P_GO || 2568 type == NL80211_IFTYPE_P2P_CLIENT)) 2569 return; 2570 2571 ieee80211_iterate_active_interfaces_mtx(mld->hw, 2572 IEEE80211_IFACE_ITER_NORMAL, 2573 iwl_mld_vif_iter_emlsr_block_tmp_non_bss, 2574 NULL); 2575 } 2576 2577 static int iwl_mld_set_hw_timestamp(struct ieee80211_hw *hw, 2578 struct ieee80211_vif *vif, 2579 struct cfg80211_set_hw_timestamp *hwts) 2580 { 2581 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2582 u32 protocols = 0; 2583 2584 /* HW timestamping is only supported for a specific station */ 2585 if (!hwts->macaddr) 2586 return -EOPNOTSUPP; 2587 2588 if (hwts->enable) 2589 protocols = 2590 IWL_TIME_SYNC_PROTOCOL_TM | IWL_TIME_SYNC_PROTOCOL_FTM; 2591 2592 return iwl_mld_time_sync_config(mld, hwts->macaddr, protocols); 2593 } 2594 2595 static int iwl_mld_start_pmsr(struct ieee80211_hw *hw, 2596 struct ieee80211_vif *vif, 2597 struct cfg80211_pmsr_request *request) 2598 { 2599 struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); 2600 2601 return iwl_mld_ftm_start(mld, vif, request); 2602 } 2603 2604 const struct ieee80211_ops iwl_mld_hw_ops = { 2605 .tx = iwl_mld_mac80211_tx, 2606 .start = iwl_mld_mac80211_start, 2607 .stop = iwl_mld_mac80211_stop, 2608 .config = iwl_mld_mac80211_config, 2609 .add_interface = iwl_mld_mac80211_add_interface, 2610 .remove_interface = iwl_mld_mac80211_remove_interface, 2611 .conf_tx = iwl_mld_mac80211_conf_tx, 2612 .prepare_multicast = iwl_mld_mac80211_prepare_multicast, 2613 .configure_filter = iwl_mld_mac80211_configure_filter, 2614 .reconfig_complete = iwl_mld_mac80211_reconfig_complete, 2615 .wake_tx_queue = iwl_mld_mac80211_wake_tx_queue, 2616 .add_chanctx = iwl_mld_add_chanctx, 2617 .remove_chanctx = iwl_mld_remove_chanctx, 2618 .change_chanctx = iwl_mld_change_chanctx, 2619 .assign_vif_chanctx = iwl_mld_assign_vif_chanctx, 2620 .unassign_vif_chanctx = iwl_mld_unassign_vif_chanctx, 2621 .set_rts_threshold = iwl_mld_mac80211_set_rts_threshold, 2622 .link_info_changed = iwl_mld_mac80211_link_info_changed, 2623 .vif_cfg_changed = iwl_mld_mac80211_vif_cfg_changed, 2624 .set_key = iwl_mld_mac80211_set_key, 2625 .hw_scan = iwl_mld_mac80211_hw_scan, 2626 .cancel_hw_scan = iwl_mld_mac80211_cancel_hw_scan, 2627 .sched_scan_start = iwl_mld_mac80211_sched_scan_start, 2628 .sched_scan_stop = iwl_mld_mac80211_sched_scan_stop, 2629 .mgd_prepare_tx = iwl_mld_mac80211_mgd_prepare_tx, 2630 .mgd_complete_tx = iwl_mld_mac_mgd_complete_tx, 2631 .sta_state = iwl_mld_mac80211_sta_state, 2632 .sta_statistics = iwl_mld_mac80211_sta_statistics, 2633 .flush = iwl_mld_mac80211_flush, 2634 .flush_sta = iwl_mld_mac80211_flush_sta, 2635 .ampdu_action = iwl_mld_mac80211_ampdu_action, 2636 .can_aggregate_in_amsdu = iwl_mld_mac80211_can_aggregate, 2637 .sync_rx_queues = iwl_mld_mac80211_sync_rx_queues, 2638 .link_sta_rc_update = iwl_mld_sta_rc_update, 2639 .start_ap = iwl_mld_start_ap_ibss, 2640 .stop_ap = iwl_mld_stop_ap_ibss, 2641 .pre_channel_switch = iwl_mld_pre_channel_switch, 2642 .channel_switch = iwl_mld_channel_switch, 2643 .post_channel_switch = iwl_mld_post_channel_switch, 2644 .abort_channel_switch = iwl_mld_abort_channel_switch, 2645 .switch_vif_chanctx = iwl_mld_switch_vif_chanctx, 2646 .sta_pre_rcu_remove = iwl_mld_sta_pre_rcu_remove, 2647 .remain_on_channel = iwl_mld_start_roc, 2648 .cancel_remain_on_channel = iwl_mld_cancel_roc, 2649 .can_activate_links = iwl_mld_can_activate_links, 2650 .change_vif_links = iwl_mld_change_vif_links, 2651 .change_sta_links = iwl_mld_change_sta_links, 2652 #ifdef CONFIG_PM_SLEEP 2653 .suspend = iwl_mld_suspend, 2654 .resume = iwl_mld_resume, 2655 .set_wakeup = iwl_mld_set_wakeup, 2656 .set_rekey_data = iwl_mld_set_rekey_data, 2657 #if IS_ENABLED(CONFIG_IPV6) 2658 .ipv6_addr_change = iwl_mld_ipv6_addr_change, 2659 #endif /* IS_ENABLED(CONFIG_IPV6) */ 2660 #endif /* CONFIG_PM_SLEEP */ 2661 #ifdef CONFIG_IWLWIFI_DEBUGFS 2662 .vif_add_debugfs = iwl_mld_add_vif_debugfs, 2663 .link_add_debugfs = iwl_mld_add_link_debugfs, 2664 .link_sta_add_debugfs = iwl_mld_add_link_sta_debugfs, 2665 #endif 2666 .mgd_protect_tdls_discover = iwl_mld_mac80211_mgd_protect_tdls_discover, 2667 .join_ibss = iwl_mld_mac80211_join_ibss, 2668 .leave_ibss = iwl_mld_mac80211_leave_ibss, 2669 .tx_last_beacon = iwl_mld_mac80211_tx_last_beacon, 2670 .prep_add_interface = iwl_mld_prep_add_interface, 2671 .set_hw_timestamp = iwl_mld_set_hw_timestamp, 2672 .start_pmsr = iwl_mld_start_pmsr, 2673 }; 2674