1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2020 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <linux/kernel.h> 8 #include <linux/slab.h> 9 #include <linux/skbuff.h> 10 #include <linux/netdevice.h> 11 #include <linux/etherdevice.h> 12 #include <linux/ip.h> 13 #include <linux/if_arp.h> 14 #include <linux/time.h> 15 #include <net/mac80211.h> 16 #include <net/ieee80211_radiotap.h> 17 #include <net/tcp.h> 18 19 #include "iwl-op-mode.h" 20 #include "iwl-io.h" 21 #include "mvm.h" 22 #include "sta.h" 23 #include "time-event.h" 24 #include "iwl-eeprom-parse.h" 25 #include "iwl-phy-db.h" 26 #include "testmode.h" 27 #include "fw/error-dump.h" 28 #include "iwl-prph.h" 29 #include "iwl-nvm-parse.h" 30 31 static const struct ieee80211_iface_limit iwl_mvm_limits[] = { 32 { 33 .max = 1, 34 .types = BIT(NL80211_IFTYPE_STATION), 35 }, 36 { 37 .max = 1, 38 .types = BIT(NL80211_IFTYPE_AP) | 39 BIT(NL80211_IFTYPE_P2P_CLIENT) | 40 BIT(NL80211_IFTYPE_P2P_GO), 41 }, 42 { 43 .max = 1, 44 .types = BIT(NL80211_IFTYPE_P2P_DEVICE), 45 }, 46 }; 47 48 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = { 49 { 50 .num_different_channels = 2, 51 .max_interfaces = 3, 52 .limits = iwl_mvm_limits, 53 .n_limits = ARRAY_SIZE(iwl_mvm_limits), 54 }, 55 }; 56 57 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 58 /* 59 * Use the reserved field to indicate magic values. 60 * these values will only be used internally by the driver, 61 * and won't make it to the fw (reserved will be 0). 62 * BC_FILTER_MAGIC_IP - configure the val of this attribute to 63 * be the vif's ip address. in case there is not a single 64 * ip address (0, or more than 1), this attribute will 65 * be skipped. 66 * BC_FILTER_MAGIC_MAC - set the val of this attribute to 67 * the LSB bytes of the vif's mac address 68 */ 69 enum { 70 BC_FILTER_MAGIC_NONE = 0, 71 BC_FILTER_MAGIC_IP, 72 BC_FILTER_MAGIC_MAC, 73 }; 74 75 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = { 76 { 77 /* arp */ 78 .discard = 0, 79 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL, 80 .attrs = { 81 { 82 /* frame type - arp, hw type - ethernet */ 83 .offset_type = 84 BCAST_FILTER_OFFSET_PAYLOAD_START, 85 .offset = sizeof(rfc1042_header), 86 .val = cpu_to_be32(0x08060001), 87 .mask = cpu_to_be32(0xffffffff), 88 }, 89 { 90 /* arp dest ip */ 91 .offset_type = 92 BCAST_FILTER_OFFSET_PAYLOAD_START, 93 .offset = sizeof(rfc1042_header) + 2 + 94 sizeof(struct arphdr) + 95 ETH_ALEN + sizeof(__be32) + 96 ETH_ALEN, 97 .mask = cpu_to_be32(0xffffffff), 98 /* mark it as special field */ 99 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP), 100 }, 101 }, 102 }, 103 { 104 /* dhcp offer bcast */ 105 .discard = 0, 106 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4, 107 .attrs = { 108 { 109 /* udp dest port - 68 (bootp client)*/ 110 .offset_type = BCAST_FILTER_OFFSET_IP_END, 111 .offset = offsetof(struct udphdr, dest), 112 .val = cpu_to_be32(0x00440000), 113 .mask = cpu_to_be32(0xffff0000), 114 }, 115 { 116 /* dhcp - lsb bytes of client hw address */ 117 .offset_type = BCAST_FILTER_OFFSET_IP_END, 118 .offset = 38, 119 .mask = cpu_to_be32(0xffffffff), 120 /* mark it as special field */ 121 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC), 122 }, 123 }, 124 }, 125 /* last filter must be empty */ 126 {}, 127 }; 128 #endif 129 130 static const struct cfg80211_pmsr_capabilities iwl_mvm_pmsr_capa = { 131 .max_peers = IWL_MVM_TOF_MAX_APS, 132 .report_ap_tsf = 1, 133 .randomize_mac_addr = 1, 134 135 .ftm = { 136 .supported = 1, 137 .asap = 1, 138 .non_asap = 1, 139 .request_lci = 1, 140 .request_civicloc = 1, 141 .trigger_based = 1, 142 .non_trigger_based = 1, 143 .max_bursts_exponent = -1, /* all supported */ 144 .max_ftms_per_burst = 0, /* no limits */ 145 .bandwidths = BIT(NL80211_CHAN_WIDTH_20_NOHT) | 146 BIT(NL80211_CHAN_WIDTH_20) | 147 BIT(NL80211_CHAN_WIDTH_40) | 148 BIT(NL80211_CHAN_WIDTH_80) | 149 BIT(NL80211_CHAN_WIDTH_160), 150 .preambles = BIT(NL80211_PREAMBLE_LEGACY) | 151 BIT(NL80211_PREAMBLE_HT) | 152 BIT(NL80211_PREAMBLE_VHT) | 153 BIT(NL80211_PREAMBLE_HE), 154 }, 155 }; 156 157 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 158 enum set_key_cmd cmd, 159 struct ieee80211_vif *vif, 160 struct ieee80211_sta *sta, 161 struct ieee80211_key_conf *key); 162 163 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm) 164 { 165 int i; 166 167 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts)); 168 for (i = 0; i < NUM_PHY_CTX; i++) { 169 mvm->phy_ctxts[i].id = i; 170 mvm->phy_ctxts[i].ref = 0; 171 } 172 } 173 174 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy, 175 const char *alpha2, 176 enum iwl_mcc_source src_id, 177 bool *changed) 178 { 179 struct ieee80211_regdomain *regd = NULL; 180 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 181 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 182 struct iwl_mcc_update_resp *resp; 183 u8 resp_ver; 184 185 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2); 186 187 lockdep_assert_held(&mvm->mutex); 188 189 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id); 190 if (IS_ERR_OR_NULL(resp)) { 191 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n", 192 PTR_ERR_OR_ZERO(resp)); 193 goto out; 194 } 195 196 if (changed) { 197 u32 status = le32_to_cpu(resp->status); 198 199 *changed = (status == MCC_RESP_NEW_CHAN_PROFILE || 200 status == MCC_RESP_ILLEGAL); 201 } 202 resp_ver = iwl_fw_lookup_notif_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, 203 MCC_UPDATE_CMD, 0); 204 IWL_DEBUG_LAR(mvm, "MCC update response version: %d\n", resp_ver); 205 206 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg, 207 __le32_to_cpu(resp->n_channels), 208 resp->channels, 209 __le16_to_cpu(resp->mcc), 210 __le16_to_cpu(resp->geo_info), 211 __le16_to_cpu(resp->cap), resp_ver); 212 /* Store the return source id */ 213 src_id = resp->source_id; 214 kfree(resp); 215 if (IS_ERR_OR_NULL(regd)) { 216 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n", 217 PTR_ERR_OR_ZERO(regd)); 218 goto out; 219 } 220 221 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n", 222 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id); 223 mvm->lar_regdom_set = true; 224 mvm->mcc_src = src_id; 225 226 out: 227 return regd; 228 } 229 230 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm) 231 { 232 bool changed; 233 struct ieee80211_regdomain *regd; 234 235 if (!iwl_mvm_is_lar_supported(mvm)) 236 return; 237 238 regd = iwl_mvm_get_current_regdomain(mvm, &changed); 239 if (!IS_ERR_OR_NULL(regd)) { 240 /* only update the regulatory core if changed */ 241 if (changed) 242 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd); 243 244 kfree(regd); 245 } 246 } 247 248 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm, 249 bool *changed) 250 { 251 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ", 252 iwl_mvm_is_wifi_mcc_supported(mvm) ? 253 MCC_SOURCE_GET_CURRENT : 254 MCC_SOURCE_OLD_FW, changed); 255 } 256 257 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm) 258 { 259 enum iwl_mcc_source used_src; 260 struct ieee80211_regdomain *regd; 261 int ret; 262 bool changed; 263 const struct ieee80211_regdomain *r = 264 wiphy_dereference(mvm->hw->wiphy, mvm->hw->wiphy->regd); 265 266 if (!r) 267 return -ENOENT; 268 269 /* save the last source in case we overwrite it below */ 270 used_src = mvm->mcc_src; 271 if (iwl_mvm_is_wifi_mcc_supported(mvm)) { 272 /* Notify the firmware we support wifi location updates */ 273 regd = iwl_mvm_get_current_regdomain(mvm, NULL); 274 if (!IS_ERR_OR_NULL(regd)) 275 kfree(regd); 276 } 277 278 /* Now set our last stored MCC and source */ 279 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src, 280 &changed); 281 if (IS_ERR_OR_NULL(regd)) 282 return -EIO; 283 284 /* update cfg80211 if the regdomain was changed */ 285 if (changed) 286 ret = regulatory_set_wiphy_regd_sync(mvm->hw->wiphy, regd); 287 else 288 ret = 0; 289 290 kfree(regd); 291 return ret; 292 } 293 294 static const u8 he_if_types_ext_capa_sta[] = { 295 [0] = WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING, 296 [2] = WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT, 297 [7] = WLAN_EXT_CAPA8_OPMODE_NOTIF, 298 [9] = WLAN_EXT_CAPA10_TWT_REQUESTER_SUPPORT, 299 }; 300 301 static const struct wiphy_iftype_ext_capab he_iftypes_ext_capa[] = { 302 { 303 .iftype = NL80211_IFTYPE_STATION, 304 .extended_capabilities = he_if_types_ext_capa_sta, 305 .extended_capabilities_mask = he_if_types_ext_capa_sta, 306 .extended_capabilities_len = sizeof(he_if_types_ext_capa_sta), 307 }, 308 }; 309 310 static int 311 iwl_mvm_op_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant) 312 { 313 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 314 *tx_ant = iwl_mvm_get_valid_tx_ant(mvm); 315 *rx_ant = iwl_mvm_get_valid_rx_ant(mvm); 316 return 0; 317 } 318 319 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) 320 { 321 struct ieee80211_hw *hw = mvm->hw; 322 int num_mac, ret, i; 323 static const u32 mvm_ciphers[] = { 324 WLAN_CIPHER_SUITE_WEP40, 325 WLAN_CIPHER_SUITE_WEP104, 326 WLAN_CIPHER_SUITE_TKIP, 327 WLAN_CIPHER_SUITE_CCMP, 328 }; 329 #ifdef CONFIG_PM_SLEEP 330 bool unified = fw_has_capa(&mvm->fw->ucode_capa, 331 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 332 #endif 333 334 /* Tell mac80211 our characteristics */ 335 ieee80211_hw_set(hw, SIGNAL_DBM); 336 ieee80211_hw_set(hw, SPECTRUM_MGMT); 337 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 338 ieee80211_hw_set(hw, WANT_MONITOR_VIF); 339 ieee80211_hw_set(hw, SUPPORTS_PS); 340 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 341 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 342 ieee80211_hw_set(hw, TIMING_BEACON_ONLY); 343 ieee80211_hw_set(hw, CONNECTION_MONITOR); 344 ieee80211_hw_set(hw, CHANCTX_STA_CSA); 345 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); 346 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS); 347 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU); 348 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR); 349 ieee80211_hw_set(hw, DEAUTH_NEED_MGD_TX_PREP); 350 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW); 351 ieee80211_hw_set(hw, BUFF_MMPDU_TXQ); 352 ieee80211_hw_set(hw, STA_MMPDU_TXQ); 353 /* 354 * On older devices, enabling TX A-MSDU occasionally leads to 355 * something getting messed up, the command read from the FIFO 356 * gets out of sync and isn't a TX command, so that we have an 357 * assert EDC. 358 * 359 * It's not clear where the bug is, but since we didn't used to 360 * support A-MSDU until moving the mac80211 iTXQs, just leave it 361 * for older devices. We also don't see this issue on any newer 362 * devices. 363 */ 364 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_9000) 365 ieee80211_hw_set(hw, TX_AMSDU); 366 ieee80211_hw_set(hw, TX_FRAG_LIST); 367 368 if (iwl_mvm_has_tlc_offload(mvm)) { 369 ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW); 370 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 371 } 372 373 if (iwl_mvm_has_new_rx_api(mvm)) 374 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER); 375 376 if (fw_has_capa(&mvm->fw->ucode_capa, 377 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) { 378 ieee80211_hw_set(hw, AP_LINK_PS); 379 } else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) { 380 /* 381 * we absolutely need this for the new TX API since that comes 382 * with many more queues than the current code can deal with 383 * for station powersave 384 */ 385 return -EINVAL; 386 } 387 388 if (mvm->trans->num_rx_queues > 1) 389 ieee80211_hw_set(hw, USES_RSS); 390 391 if (mvm->trans->max_skb_frags) 392 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG; 393 394 hw->queues = IEEE80211_NUM_ACS; 395 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE; 396 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC | 397 IEEE80211_RADIOTAP_MCS_HAVE_STBC; 398 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC | 399 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED; 400 401 hw->radiotap_timestamp.units_pos = 402 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US | 403 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ; 404 /* this is the case for CCK frames, it's better (only 8) for OFDM */ 405 hw->radiotap_timestamp.accuracy = 22; 406 407 if (!iwl_mvm_has_tlc_offload(mvm)) 408 hw->rate_control_algorithm = RS_NAME; 409 410 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES; 411 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP; 412 hw->max_tx_fragments = mvm->trans->max_skb_frags; 413 414 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6); 415 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers)); 416 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers); 417 hw->wiphy->cipher_suites = mvm->ciphers; 418 419 if (iwl_mvm_has_new_rx_api(mvm)) { 420 mvm->ciphers[hw->wiphy->n_cipher_suites] = 421 WLAN_CIPHER_SUITE_GCMP; 422 hw->wiphy->n_cipher_suites++; 423 mvm->ciphers[hw->wiphy->n_cipher_suites] = 424 WLAN_CIPHER_SUITE_GCMP_256; 425 hw->wiphy->n_cipher_suites++; 426 } 427 428 if (iwlwifi_mod_params.swcrypto) 429 IWL_ERR(mvm, 430 "iwlmvm doesn't allow to disable HW crypto, check swcrypto module parameter\n"); 431 if (!iwlwifi_mod_params.bt_coex_active) 432 IWL_ERR(mvm, 433 "iwlmvm doesn't allow to disable BT Coex, check bt_coex_active module parameter\n"); 434 435 ieee80211_hw_set(hw, MFP_CAPABLE); 436 mvm->ciphers[hw->wiphy->n_cipher_suites] = WLAN_CIPHER_SUITE_AES_CMAC; 437 hw->wiphy->n_cipher_suites++; 438 if (iwl_mvm_has_new_rx_api(mvm)) { 439 mvm->ciphers[hw->wiphy->n_cipher_suites] = 440 WLAN_CIPHER_SUITE_BIP_GMAC_128; 441 hw->wiphy->n_cipher_suites++; 442 mvm->ciphers[hw->wiphy->n_cipher_suites] = 443 WLAN_CIPHER_SUITE_BIP_GMAC_256; 444 hw->wiphy->n_cipher_suites++; 445 } 446 447 /* currently FW API supports only one optional cipher scheme */ 448 if (mvm->fw->cs[0].cipher) { 449 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0]; 450 struct ieee80211_cipher_scheme *cs = &mvm->cs[0]; 451 452 mvm->hw->n_cipher_schemes = 1; 453 454 cs->cipher = le32_to_cpu(fwcs->cipher); 455 cs->iftype = BIT(NL80211_IFTYPE_STATION); 456 cs->hdr_len = fwcs->hdr_len; 457 cs->pn_len = fwcs->pn_len; 458 cs->pn_off = fwcs->pn_off; 459 cs->key_idx_off = fwcs->key_idx_off; 460 cs->key_idx_mask = fwcs->key_idx_mask; 461 cs->key_idx_shift = fwcs->key_idx_shift; 462 cs->mic_len = fwcs->mic_len; 463 464 mvm->hw->cipher_schemes = mvm->cs; 465 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher; 466 hw->wiphy->n_cipher_suites++; 467 } 468 469 if (fw_has_capa(&mvm->fw->ucode_capa, 470 IWL_UCODE_TLV_CAPA_FTM_CALIBRATED)) { 471 wiphy_ext_feature_set(hw->wiphy, 472 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER); 473 hw->wiphy->pmsr_capa = &iwl_mvm_pmsr_capa; 474 } 475 476 if (fw_has_capa(&mvm->fw->ucode_capa, 477 IWL_UCODE_TLV_CAPA_BIGTK_SUPPORT)) 478 wiphy_ext_feature_set(hw->wiphy, 479 NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT); 480 481 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS); 482 hw->wiphy->features |= 483 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR | 484 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR | 485 NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 486 487 hw->sta_data_size = sizeof(struct iwl_mvm_sta); 488 hw->vif_data_size = sizeof(struct iwl_mvm_vif); 489 hw->chanctx_data_size = sizeof(u16); 490 hw->txq_data_size = sizeof(struct iwl_mvm_txq); 491 492 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 493 BIT(NL80211_IFTYPE_P2P_CLIENT) | 494 BIT(NL80211_IFTYPE_AP) | 495 BIT(NL80211_IFTYPE_P2P_GO) | 496 BIT(NL80211_IFTYPE_P2P_DEVICE) | 497 BIT(NL80211_IFTYPE_ADHOC); 498 499 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; 500 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS); 501 502 /* The new Tx API does not allow to pass the key or keyid of a MPDU to 503 * the hw, preventing us to control which key(id) to use per MPDU. 504 * Till that's fixed we can't use Extended Key ID for the newer cards. 505 */ 506 if (!iwl_mvm_has_new_tx_api(mvm)) 507 wiphy_ext_feature_set(hw->wiphy, 508 NL80211_EXT_FEATURE_EXT_KEY_ID); 509 hw->wiphy->features |= NL80211_FEATURE_HT_IBSS; 510 511 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR; 512 if (iwl_mvm_is_lar_supported(mvm)) 513 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED; 514 else 515 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | 516 REGULATORY_DISABLE_BEACON_HINTS; 517 518 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; 519 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; 520 hw->wiphy->flags |= WIPHY_FLAG_SPLIT_SCAN_6GHZ; 521 522 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations; 523 hw->wiphy->n_iface_combinations = 524 ARRAY_SIZE(iwl_mvm_iface_combinations); 525 526 hw->wiphy->max_remain_on_channel_duration = 10000; 527 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; 528 529 /* Extract MAC address */ 530 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN); 531 hw->wiphy->addresses = mvm->addresses; 532 hw->wiphy->n_addresses = 1; 533 534 /* Extract additional MAC addresses if available */ 535 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ? 536 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1; 537 538 for (i = 1; i < num_mac; i++) { 539 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr, 540 ETH_ALEN); 541 mvm->addresses[i].addr[5]++; 542 hw->wiphy->n_addresses++; 543 } 544 545 iwl_mvm_reset_phy_ctxts(mvm); 546 547 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm); 548 549 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; 550 551 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK); 552 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) || 553 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK)); 554 555 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 556 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS; 557 else 558 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS; 559 560 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels) 561 hw->wiphy->bands[NL80211_BAND_2GHZ] = 562 &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 563 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) { 564 hw->wiphy->bands[NL80211_BAND_5GHZ] = 565 &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 566 567 if (fw_has_capa(&mvm->fw->ucode_capa, 568 IWL_UCODE_TLV_CAPA_BEAMFORMER) && 569 fw_has_api(&mvm->fw->ucode_capa, 570 IWL_UCODE_TLV_API_LQ_SS_PARAMS)) 571 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |= 572 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE; 573 } 574 if (fw_has_capa(&mvm->fw->ucode_capa, 575 IWL_UCODE_TLV_CAPA_PSC_CHAN_SUPPORT) && 576 mvm->nvm_data->bands[NL80211_BAND_6GHZ].n_channels) 577 hw->wiphy->bands[NL80211_BAND_6GHZ] = 578 &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; 579 580 hw->wiphy->hw_version = mvm->trans->hw_id; 581 582 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 583 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; 584 else 585 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; 586 587 hw->wiphy->max_sched_scan_reqs = 1; 588 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX; 589 hw->wiphy->max_match_sets = iwl_umac_scan_get_max_profiles(mvm->fw); 590 /* we create the 802.11 header and zero length SSID IE. */ 591 hw->wiphy->max_sched_scan_ie_len = 592 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2; 593 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS; 594 hw->wiphy->max_sched_scan_plan_interval = U16_MAX; 595 596 /* 597 * the firmware uses u8 for num of iterations, but 0xff is saved for 598 * infinite loop, so the maximum number of iterations is actually 254. 599 */ 600 hw->wiphy->max_sched_scan_plan_iterations = 254; 601 602 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN | 603 NL80211_FEATURE_LOW_PRIORITY_SCAN | 604 NL80211_FEATURE_P2P_GO_OPPPS | 605 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | 606 NL80211_FEATURE_DYNAMIC_SMPS | 607 NL80211_FEATURE_STATIC_SMPS | 608 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION; 609 610 if (fw_has_capa(&mvm->fw->ucode_capa, 611 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)) 612 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION; 613 if (fw_has_capa(&mvm->fw->ucode_capa, 614 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)) 615 hw->wiphy->features |= NL80211_FEATURE_QUIET; 616 617 if (fw_has_capa(&mvm->fw->ucode_capa, 618 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) 619 hw->wiphy->features |= 620 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES; 621 622 if (fw_has_capa(&mvm->fw->ucode_capa, 623 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 624 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES; 625 626 if (iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, 627 WOWLAN_KEK_KCK_MATERIAL, 628 IWL_FW_CMD_VER_UNKNOWN) == 3) 629 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK; 630 631 if (fw_has_api(&mvm->fw->ucode_capa, 632 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) { 633 wiphy_ext_feature_set(hw->wiphy, 634 NL80211_EXT_FEATURE_SCAN_START_TIME); 635 wiphy_ext_feature_set(hw->wiphy, 636 NL80211_EXT_FEATURE_BSS_PARENT_TSF); 637 } 638 639 if (iwl_mvm_is_oce_supported(mvm)) { 640 wiphy_ext_feature_set(hw->wiphy, 641 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP); 642 wiphy_ext_feature_set(hw->wiphy, 643 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME); 644 wiphy_ext_feature_set(hw->wiphy, 645 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION); 646 wiphy_ext_feature_set(hw->wiphy, 647 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE); 648 } 649 650 if (mvm->nvm_data->sku_cap_11ax_enable && 651 !iwlwifi_mod_params.disable_11ax) { 652 hw->wiphy->iftype_ext_capab = he_iftypes_ext_capa; 653 hw->wiphy->num_iftype_ext_capab = 654 ARRAY_SIZE(he_iftypes_ext_capa); 655 656 ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID); 657 ieee80211_hw_set(hw, SUPPORTS_ONLY_HE_MULTI_BSSID); 658 } 659 660 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; 661 662 #ifdef CONFIG_PM_SLEEP 663 if ((unified || mvm->fw->img[IWL_UCODE_WOWLAN].num_sec) && 664 mvm->trans->ops->d3_suspend && 665 mvm->trans->ops->d3_resume && 666 device_can_wakeup(mvm->trans->dev)) { 667 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT | 668 WIPHY_WOWLAN_DISCONNECT | 669 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 670 WIPHY_WOWLAN_RFKILL_RELEASE | 671 WIPHY_WOWLAN_NET_DETECT; 672 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 673 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 674 WIPHY_WOWLAN_4WAY_HANDSHAKE; 675 676 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS; 677 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN; 678 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN; 679 mvm->wowlan.max_nd_match_sets = 680 iwl_umac_scan_get_max_profiles(mvm->fw); 681 hw->wiphy->wowlan = &mvm->wowlan; 682 } 683 #endif 684 685 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 686 /* assign default bcast filtering configuration */ 687 mvm->bcast_filters = iwl_mvm_default_bcast_filters; 688 #endif 689 690 ret = iwl_mvm_leds_init(mvm); 691 if (ret) 692 return ret; 693 694 if (fw_has_capa(&mvm->fw->ucode_capa, 695 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) { 696 IWL_DEBUG_TDLS(mvm, "TDLS supported\n"); 697 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS; 698 ieee80211_hw_set(hw, TDLS_WIDER_BW); 699 } 700 701 if (fw_has_capa(&mvm->fw->ucode_capa, 702 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) { 703 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n"); 704 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH; 705 } 706 707 hw->netdev_features |= mvm->cfg->features; 708 if (!iwl_mvm_is_csum_supported(mvm)) 709 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS | 710 NETIF_F_RXCSUM); 711 712 if (mvm->cfg->vht_mu_mimo_supported) 713 wiphy_ext_feature_set(hw->wiphy, 714 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER); 715 716 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_PROTECTED_TWT)) 717 wiphy_ext_feature_set(hw->wiphy, 718 NL80211_EXT_FEATURE_PROTECTED_TWT); 719 720 hw->wiphy->available_antennas_tx = iwl_mvm_get_valid_tx_ant(mvm); 721 hw->wiphy->available_antennas_rx = iwl_mvm_get_valid_rx_ant(mvm); 722 723 ret = ieee80211_register_hw(mvm->hw); 724 if (ret) { 725 iwl_mvm_leds_exit(mvm); 726 } 727 728 return ret; 729 } 730 731 static void iwl_mvm_tx_skb(struct iwl_mvm *mvm, struct sk_buff *skb, 732 struct ieee80211_sta *sta) 733 { 734 if (likely(sta)) { 735 if (likely(iwl_mvm_tx_skb_sta(mvm, skb, sta) == 0)) 736 return; 737 } else { 738 if (likely(iwl_mvm_tx_skb_non_sta(mvm, skb) == 0)) 739 return; 740 } 741 742 ieee80211_free_txskb(mvm->hw, skb); 743 } 744 745 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw, 746 struct ieee80211_tx_control *control, 747 struct sk_buff *skb) 748 { 749 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 750 struct ieee80211_sta *sta = control->sta; 751 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 752 struct ieee80211_hdr *hdr = (void *)skb->data; 753 bool offchannel = IEEE80211_SKB_CB(skb)->flags & 754 IEEE80211_TX_CTL_TX_OFFCHAN; 755 756 if (iwl_mvm_is_radio_killed(mvm)) { 757 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n"); 758 goto drop; 759 } 760 761 if (offchannel && 762 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) && 763 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status)) 764 goto drop; 765 766 /* 767 * bufferable MMPDUs or MMPDUs on STA interfaces come via TXQs 768 * so we treat the others as broadcast 769 */ 770 if (ieee80211_is_mgmt(hdr->frame_control)) 771 sta = NULL; 772 773 /* If there is no sta, and it's not offchannel - send through AP */ 774 if (!sta && info->control.vif->type == NL80211_IFTYPE_STATION && 775 !offchannel) { 776 struct iwl_mvm_vif *mvmvif = 777 iwl_mvm_vif_from_mac80211(info->control.vif); 778 u8 ap_sta_id = READ_ONCE(mvmvif->ap_sta_id); 779 780 if (ap_sta_id < mvm->fw->ucode_capa.num_stations) { 781 /* mac80211 holds rcu read lock */ 782 sta = rcu_dereference(mvm->fw_id_to_mac_id[ap_sta_id]); 783 if (IS_ERR_OR_NULL(sta)) 784 goto drop; 785 } 786 } 787 788 iwl_mvm_tx_skb(mvm, skb, sta); 789 return; 790 drop: 791 ieee80211_free_txskb(hw, skb); 792 } 793 794 void iwl_mvm_mac_itxq_xmit(struct ieee80211_hw *hw, struct ieee80211_txq *txq) 795 { 796 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 797 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq); 798 struct sk_buff *skb = NULL; 799 800 /* 801 * No need for threads to be pending here, they can leave the first 802 * taker all the work. 803 * 804 * mvmtxq->tx_request logic: 805 * 806 * If 0, no one is currently TXing, set to 1 to indicate current thread 807 * will now start TX and other threads should quit. 808 * 809 * If 1, another thread is currently TXing, set to 2 to indicate to 810 * that thread that there was another request. Since that request may 811 * have raced with the check whether the queue is empty, the TXing 812 * thread should check the queue's status one more time before leaving. 813 * This check is done in order to not leave any TX hanging in the queue 814 * until the next TX invocation (which may not even happen). 815 * 816 * If 2, another thread is currently TXing, and it will already double 817 * check the queue, so do nothing. 818 */ 819 if (atomic_fetch_add_unless(&mvmtxq->tx_request, 1, 2)) 820 return; 821 822 rcu_read_lock(); 823 do { 824 while (likely(!mvmtxq->stopped && 825 !test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status))) { 826 skb = ieee80211_tx_dequeue(hw, txq); 827 828 if (!skb) { 829 if (txq->sta) 830 IWL_DEBUG_TX(mvm, 831 "TXQ of sta %pM tid %d is now empty\n", 832 txq->sta->addr, 833 txq->tid); 834 break; 835 } 836 837 iwl_mvm_tx_skb(mvm, skb, txq->sta); 838 } 839 } while (atomic_dec_return(&mvmtxq->tx_request)); 840 rcu_read_unlock(); 841 } 842 843 static void iwl_mvm_mac_wake_tx_queue(struct ieee80211_hw *hw, 844 struct ieee80211_txq *txq) 845 { 846 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 847 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq); 848 849 /* 850 * Please note that racing is handled very carefully here: 851 * mvmtxq->txq_id is updated during allocation, and mvmtxq->list is 852 * deleted afterwards. 853 * This means that if: 854 * mvmtxq->txq_id != INVALID_QUEUE && list_empty(&mvmtxq->list): 855 * queue is allocated and we can TX. 856 * mvmtxq->txq_id != INVALID_QUEUE && !list_empty(&mvmtxq->list): 857 * a race, should defer the frame. 858 * mvmtxq->txq_id == INVALID_QUEUE && list_empty(&mvmtxq->list): 859 * need to allocate the queue and defer the frame. 860 * mvmtxq->txq_id == INVALID_QUEUE && !list_empty(&mvmtxq->list): 861 * queue is already scheduled for allocation, no need to allocate, 862 * should defer the frame. 863 */ 864 865 /* If the queue is allocated TX and return. */ 866 if (!txq->sta || mvmtxq->txq_id != IWL_MVM_INVALID_QUEUE) { 867 /* 868 * Check that list is empty to avoid a race where txq_id is 869 * already updated, but the queue allocation work wasn't 870 * finished 871 */ 872 if (unlikely(txq->sta && !list_empty(&mvmtxq->list))) 873 return; 874 875 iwl_mvm_mac_itxq_xmit(hw, txq); 876 return; 877 } 878 879 /* The list is being deleted only after the queue is fully allocated. */ 880 if (!list_empty(&mvmtxq->list)) 881 return; 882 883 list_add_tail(&mvmtxq->list, &mvm->add_stream_txqs); 884 schedule_work(&mvm->add_stream_wk); 885 } 886 887 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \ 888 do { \ 889 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \ 890 break; \ 891 iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt); \ 892 } while (0) 893 894 static void 895 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 896 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn, 897 enum ieee80211_ampdu_mlme_action action) 898 { 899 struct iwl_fw_dbg_trigger_tlv *trig; 900 struct iwl_fw_dbg_trigger_ba *ba_trig; 901 902 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 903 FW_DBG_TRIGGER_BA); 904 if (!trig) 905 return; 906 907 ba_trig = (void *)trig->data; 908 909 switch (action) { 910 case IEEE80211_AMPDU_TX_OPERATIONAL: { 911 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 912 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 913 914 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid, 915 "TX AGG START: MAC %pM tid %d ssn %d\n", 916 sta->addr, tid, tid_data->ssn); 917 break; 918 } 919 case IEEE80211_AMPDU_TX_STOP_CONT: 920 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid, 921 "TX AGG STOP: MAC %pM tid %d\n", 922 sta->addr, tid); 923 break; 924 case IEEE80211_AMPDU_RX_START: 925 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid, 926 "RX AGG START: MAC %pM tid %d ssn %d\n", 927 sta->addr, tid, rx_ba_ssn); 928 break; 929 case IEEE80211_AMPDU_RX_STOP: 930 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid, 931 "RX AGG STOP: MAC %pM tid %d\n", 932 sta->addr, tid); 933 break; 934 default: 935 break; 936 } 937 } 938 939 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw, 940 struct ieee80211_vif *vif, 941 struct ieee80211_ampdu_params *params) 942 { 943 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 944 int ret; 945 struct ieee80211_sta *sta = params->sta; 946 enum ieee80211_ampdu_mlme_action action = params->action; 947 u16 tid = params->tid; 948 u16 *ssn = ¶ms->ssn; 949 u16 buf_size = params->buf_size; 950 bool amsdu = params->amsdu; 951 u16 timeout = params->timeout; 952 953 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n", 954 sta->addr, tid, action); 955 956 if (!(mvm->nvm_data->sku_cap_11n_enable)) 957 return -EACCES; 958 959 mutex_lock(&mvm->mutex); 960 961 switch (action) { 962 case IEEE80211_AMPDU_RX_START: 963 if (iwl_mvm_vif_from_mac80211(vif)->ap_sta_id == 964 iwl_mvm_sta_from_mac80211(sta)->sta_id) { 965 struct iwl_mvm_vif *mvmvif; 966 u16 macid = iwl_mvm_vif_from_mac80211(vif)->id; 967 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid]; 968 969 mdata->opened_rx_ba_sessions = true; 970 mvmvif = iwl_mvm_vif_from_mac80211(vif); 971 cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk); 972 } 973 if (!iwl_enable_rx_ampdu()) { 974 ret = -EINVAL; 975 break; 976 } 977 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size, 978 timeout); 979 break; 980 case IEEE80211_AMPDU_RX_STOP: 981 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size, 982 timeout); 983 break; 984 case IEEE80211_AMPDU_TX_START: 985 if (!iwl_enable_tx_ampdu()) { 986 ret = -EINVAL; 987 break; 988 } 989 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn); 990 break; 991 case IEEE80211_AMPDU_TX_STOP_CONT: 992 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid); 993 break; 994 case IEEE80211_AMPDU_TX_STOP_FLUSH: 995 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 996 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid); 997 break; 998 case IEEE80211_AMPDU_TX_OPERATIONAL: 999 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, 1000 buf_size, amsdu); 1001 break; 1002 default: 1003 WARN_ON_ONCE(1); 1004 ret = -EINVAL; 1005 break; 1006 } 1007 1008 if (!ret) { 1009 u16 rx_ba_ssn = 0; 1010 1011 if (action == IEEE80211_AMPDU_RX_START) 1012 rx_ba_ssn = *ssn; 1013 1014 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid, 1015 rx_ba_ssn, action); 1016 } 1017 mutex_unlock(&mvm->mutex); 1018 1019 return ret; 1020 } 1021 1022 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac, 1023 struct ieee80211_vif *vif) 1024 { 1025 struct iwl_mvm *mvm = data; 1026 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1027 1028 mvmvif->uploaded = false; 1029 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1030 1031 spin_lock_bh(&mvm->time_event_lock); 1032 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data); 1033 spin_unlock_bh(&mvm->time_event_lock); 1034 1035 mvmvif->phy_ctxt = NULL; 1036 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data)); 1037 memset(&mvmvif->probe_resp_data, 0, sizeof(mvmvif->probe_resp_data)); 1038 } 1039 1040 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) 1041 { 1042 iwl_mvm_stop_device(mvm); 1043 1044 mvm->cur_aid = 0; 1045 1046 mvm->scan_status = 0; 1047 mvm->ps_disabled = false; 1048 mvm->rfkill_safe_init_done = false; 1049 1050 /* just in case one was running */ 1051 iwl_mvm_cleanup_roc_te(mvm); 1052 ieee80211_remain_on_channel_expired(mvm->hw); 1053 1054 iwl_mvm_ftm_restart(mvm); 1055 1056 /* 1057 * cleanup all interfaces, even inactive ones, as some might have 1058 * gone down during the HW restart 1059 */ 1060 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm); 1061 1062 mvm->p2p_device_vif = NULL; 1063 1064 iwl_mvm_reset_phy_ctxts(mvm); 1065 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 1066 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif)); 1067 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd)); 1068 1069 ieee80211_wake_queues(mvm->hw); 1070 1071 mvm->vif_count = 0; 1072 mvm->rx_ba_sessions = 0; 1073 mvm->fwrt.dump.conf = FW_DBG_INVALID; 1074 mvm->monitor_on = false; 1075 1076 /* keep statistics ticking */ 1077 iwl_mvm_accu_radio_stats(mvm); 1078 } 1079 1080 int __iwl_mvm_mac_start(struct iwl_mvm *mvm) 1081 { 1082 int ret; 1083 1084 lockdep_assert_held(&mvm->mutex); 1085 1086 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) { 1087 /* 1088 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART 1089 * so later code will - from now on - see that we're doing it. 1090 */ 1091 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1092 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 1093 /* Clean up some internal and mac80211 state on restart */ 1094 iwl_mvm_restart_cleanup(mvm); 1095 } 1096 ret = iwl_mvm_up(mvm); 1097 1098 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_POST_INIT, 1099 NULL); 1100 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_PERIODIC, 1101 NULL); 1102 1103 mvm->last_reset_or_resume_time_jiffies = jiffies; 1104 1105 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1106 /* Something went wrong - we need to finish some cleanup 1107 * that normally iwl_mvm_mac_restart_complete() below 1108 * would do. 1109 */ 1110 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1111 } 1112 1113 return ret; 1114 } 1115 1116 static int iwl_mvm_mac_start(struct ieee80211_hw *hw) 1117 { 1118 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1119 int ret; 1120 1121 mutex_lock(&mvm->mutex); 1122 ret = __iwl_mvm_mac_start(mvm); 1123 mutex_unlock(&mvm->mutex); 1124 1125 return ret; 1126 } 1127 1128 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm) 1129 { 1130 int ret; 1131 1132 mutex_lock(&mvm->mutex); 1133 1134 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1135 1136 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1137 if (ret) 1138 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n", 1139 ret); 1140 1141 iwl_mvm_send_recovery_cmd(mvm, ERROR_RECOVERY_END_OF_RECOVERY); 1142 1143 /* 1144 * If we have TDLS peers, remove them. We don't know the last seqno/PN 1145 * of packets the FW sent out, so we must reconnect. 1146 */ 1147 iwl_mvm_teardown_tdls_peers(mvm); 1148 1149 mutex_unlock(&mvm->mutex); 1150 } 1151 1152 static void 1153 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw, 1154 enum ieee80211_reconfig_type reconfig_type) 1155 { 1156 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1157 1158 switch (reconfig_type) { 1159 case IEEE80211_RECONFIG_TYPE_RESTART: 1160 iwl_mvm_restart_complete(mvm); 1161 break; 1162 case IEEE80211_RECONFIG_TYPE_SUSPEND: 1163 break; 1164 } 1165 } 1166 1167 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm) 1168 { 1169 lockdep_assert_held(&mvm->mutex); 1170 1171 iwl_mvm_ftm_initiator_smooth_stop(mvm); 1172 1173 /* firmware counters are obviously reset now, but we shouldn't 1174 * partially track so also clear the fw_reset_accu counters. 1175 */ 1176 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats)); 1177 1178 /* async_handlers_wk is now blocked */ 1179 1180 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, ADD_STA, 0) < 12) 1181 iwl_mvm_rm_aux_sta(mvm); 1182 1183 iwl_mvm_stop_device(mvm); 1184 1185 iwl_mvm_async_handlers_purge(mvm); 1186 /* async_handlers_list is empty and will stay empty: HW is stopped */ 1187 1188 /* 1189 * Clear IN_HW_RESTART and HW_RESTART_REQUESTED flag when stopping the 1190 * hw (as restart_complete() won't be called in this case) and mac80211 1191 * won't execute the restart. 1192 * But make sure to cleanup interfaces that have gone down before/during 1193 * HW restart was requested. 1194 */ 1195 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 1196 test_and_clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 1197 &mvm->status)) 1198 ieee80211_iterate_interfaces(mvm->hw, 0, 1199 iwl_mvm_cleanup_iterator, mvm); 1200 1201 /* We shouldn't have any UIDs still set. Loop over all the UIDs to 1202 * make sure there's nothing left there and warn if any is found. 1203 */ 1204 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 1205 int i; 1206 1207 for (i = 0; i < mvm->max_scans; i++) { 1208 if (WARN_ONCE(mvm->scan_uid_status[i], 1209 "UMAC scan UID %d status was not cleaned\n", 1210 i)) 1211 mvm->scan_uid_status[i] = 0; 1212 } 1213 } 1214 } 1215 1216 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw) 1217 { 1218 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1219 1220 flush_work(&mvm->async_handlers_wk); 1221 flush_work(&mvm->add_stream_wk); 1222 1223 /* 1224 * Lock and clear the firmware running bit here already, so that 1225 * new commands coming in elsewhere, e.g. from debugfs, will not 1226 * be able to proceed. This is important here because one of those 1227 * debugfs files causes the firmware dump to be triggered, and if we 1228 * don't stop debugfs accesses before canceling that it could be 1229 * retriggered after we flush it but before we've cleared the bit. 1230 */ 1231 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status); 1232 1233 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork); 1234 cancel_delayed_work_sync(&mvm->scan_timeout_dwork); 1235 1236 /* 1237 * The work item could be running or queued if the 1238 * ROC time event stops just as we get here. 1239 */ 1240 flush_work(&mvm->roc_done_wk); 1241 1242 mutex_lock(&mvm->mutex); 1243 __iwl_mvm_mac_stop(mvm); 1244 mutex_unlock(&mvm->mutex); 1245 1246 /* 1247 * The worker might have been waiting for the mutex, let it run and 1248 * discover that its list is now empty. 1249 */ 1250 cancel_work_sync(&mvm->async_handlers_wk); 1251 } 1252 1253 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm) 1254 { 1255 u16 i; 1256 1257 lockdep_assert_held(&mvm->mutex); 1258 1259 for (i = 0; i < NUM_PHY_CTX; i++) 1260 if (!mvm->phy_ctxts[i].ref) 1261 return &mvm->phy_ctxts[i]; 1262 1263 IWL_ERR(mvm, "No available PHY context\n"); 1264 return NULL; 1265 } 1266 1267 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1268 s16 tx_power) 1269 { 1270 int len; 1271 struct iwl_dev_tx_power_cmd cmd = { 1272 .common.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC), 1273 .common.mac_context_id = 1274 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id), 1275 .common.pwr_restriction = cpu_to_le16(8 * tx_power), 1276 }; 1277 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 1278 REDUCE_TX_POWER_CMD, 1279 IWL_FW_CMD_VER_UNKNOWN); 1280 1281 if (tx_power == IWL_DEFAULT_MAX_TX_POWER) 1282 cmd.common.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER); 1283 1284 if (cmd_ver == 6) 1285 len = sizeof(cmd.v6); 1286 else if (fw_has_api(&mvm->fw->ucode_capa, 1287 IWL_UCODE_TLV_API_REDUCE_TX_POWER)) 1288 len = sizeof(cmd.v5); 1289 else if (fw_has_capa(&mvm->fw->ucode_capa, 1290 IWL_UCODE_TLV_CAPA_TX_POWER_ACK)) 1291 len = sizeof(cmd.v4); 1292 else 1293 len = sizeof(cmd.v3); 1294 1295 /* all structs have the same common part, add it */ 1296 len += sizeof(cmd.common); 1297 1298 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd); 1299 } 1300 1301 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw, 1302 struct ieee80211_vif *vif) 1303 { 1304 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1305 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1306 int ret; 1307 1308 mutex_lock(&mvm->mutex); 1309 1310 if (vif->type == NL80211_IFTYPE_STATION) { 1311 struct iwl_mvm_sta *mvmsta; 1312 1313 mvmvif->csa_bcn_pending = false; 1314 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, 1315 mvmvif->ap_sta_id); 1316 1317 if (WARN_ON(!mvmsta)) { 1318 ret = -EIO; 1319 goto out_unlock; 1320 } 1321 1322 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false); 1323 1324 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1325 1326 if (!fw_has_capa(&mvm->fw->ucode_capa, 1327 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { 1328 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 1329 if (ret) 1330 goto out_unlock; 1331 1332 iwl_mvm_stop_session_protection(mvm, vif); 1333 } 1334 } 1335 1336 mvmvif->ps_disabled = false; 1337 1338 ret = iwl_mvm_power_update_ps(mvm); 1339 1340 out_unlock: 1341 if (mvmvif->csa_failed) 1342 ret = -EIO; 1343 mutex_unlock(&mvm->mutex); 1344 1345 return ret; 1346 } 1347 1348 static void iwl_mvm_abort_channel_switch(struct ieee80211_hw *hw, 1349 struct ieee80211_vif *vif) 1350 { 1351 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1352 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1353 struct iwl_chan_switch_te_cmd cmd = { 1354 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 1355 mvmvif->color)), 1356 .action = cpu_to_le32(FW_CTXT_ACTION_REMOVE), 1357 }; 1358 1359 IWL_DEBUG_MAC80211(mvm, "Abort CSA on mac %d\n", mvmvif->id); 1360 1361 mutex_lock(&mvm->mutex); 1362 if (!fw_has_capa(&mvm->fw->ucode_capa, 1363 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) 1364 iwl_mvm_remove_csa_period(mvm, vif); 1365 else 1366 WARN_ON(iwl_mvm_send_cmd_pdu(mvm, 1367 WIDE_ID(MAC_CONF_GROUP, 1368 CHANNEL_SWITCH_TIME_EVENT_CMD), 1369 0, sizeof(cmd), &cmd)); 1370 mvmvif->csa_failed = true; 1371 mutex_unlock(&mvm->mutex); 1372 1373 iwl_mvm_post_channel_switch(hw, vif); 1374 } 1375 1376 static void iwl_mvm_channel_switch_disconnect_wk(struct work_struct *wk) 1377 { 1378 struct iwl_mvm_vif *mvmvif; 1379 struct ieee80211_vif *vif; 1380 1381 mvmvif = container_of(wk, struct iwl_mvm_vif, csa_work.work); 1382 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 1383 1384 /* Trigger disconnect (should clear the CSA state) */ 1385 ieee80211_chswitch_done(vif, false); 1386 } 1387 1388 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, 1389 struct ieee80211_vif *vif) 1390 { 1391 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1392 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1393 int ret; 1394 1395 mvmvif->mvm = mvm; 1396 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); 1397 1398 /* 1399 * Not much to do here. The stack will not allow interface 1400 * types or combinations that we didn't advertise, so we 1401 * don't really have to check the types. 1402 */ 1403 1404 mutex_lock(&mvm->mutex); 1405 1406 /* make sure that beacon statistics don't go backwards with FW reset */ 1407 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1408 mvmvif->beacon_stats.accu_num_beacons += 1409 mvmvif->beacon_stats.num_beacons; 1410 1411 /* Allocate resources for the MAC context, and add it to the fw */ 1412 ret = iwl_mvm_mac_ctxt_init(mvm, vif); 1413 if (ret) 1414 goto out_unlock; 1415 1416 rcu_assign_pointer(mvm->vif_id_to_mac[mvmvif->id], vif); 1417 1418 /* Counting number of interfaces is needed for legacy PM */ 1419 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1420 mvm->vif_count++; 1421 1422 /* 1423 * The AP binding flow can be done only after the beacon 1424 * template is configured (which happens only in the mac80211 1425 * start_ap() flow), and adding the broadcast station can happen 1426 * only after the binding. 1427 * In addition, since modifying the MAC before adding a bcast 1428 * station is not allowed by the FW, delay the adding of MAC context to 1429 * the point where we can also add the bcast station. 1430 * In short: there's not much we can do at this point, other than 1431 * allocating resources :) 1432 */ 1433 if (vif->type == NL80211_IFTYPE_AP || 1434 vif->type == NL80211_IFTYPE_ADHOC) { 1435 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 1436 if (ret) { 1437 IWL_ERR(mvm, "Failed to allocate bcast sta\n"); 1438 goto out_release; 1439 } 1440 1441 /* 1442 * Only queue for this station is the mcast queue, 1443 * which shouldn't be in TFD mask anyway 1444 */ 1445 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta, 1446 0, vif->type, 1447 IWL_STA_MULTICAST); 1448 if (ret) 1449 goto out_release; 1450 1451 iwl_mvm_vif_dbgfs_register(mvm, vif); 1452 goto out_unlock; 1453 } 1454 1455 mvmvif->features |= hw->netdev_features; 1456 1457 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 1458 if (ret) 1459 goto out_release; 1460 1461 ret = iwl_mvm_power_update_mac(mvm); 1462 if (ret) 1463 goto out_remove_mac; 1464 1465 /* beacon filtering */ 1466 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 1467 if (ret) 1468 goto out_remove_mac; 1469 1470 if (!mvm->bf_allowed_vif && 1471 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) { 1472 mvm->bf_allowed_vif = mvmvif; 1473 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 1474 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 1475 } 1476 1477 /* 1478 * P2P_DEVICE interface does not have a channel context assigned to it, 1479 * so a dedicated PHY context is allocated to it and the corresponding 1480 * MAC context is bound to it at this stage. 1481 */ 1482 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1483 1484 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 1485 if (!mvmvif->phy_ctxt) { 1486 ret = -ENOSPC; 1487 goto out_free_bf; 1488 } 1489 1490 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 1491 ret = iwl_mvm_binding_add_vif(mvm, vif); 1492 if (ret) 1493 goto out_unref_phy; 1494 1495 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif); 1496 if (ret) 1497 goto out_unbind; 1498 1499 /* Save a pointer to p2p device vif, so it can later be used to 1500 * update the p2p device MAC when a GO is started/stopped */ 1501 mvm->p2p_device_vif = vif; 1502 } 1503 1504 iwl_mvm_tcm_add_vif(mvm, vif); 1505 INIT_DELAYED_WORK(&mvmvif->csa_work, 1506 iwl_mvm_channel_switch_disconnect_wk); 1507 1508 if (vif->type == NL80211_IFTYPE_MONITOR) 1509 mvm->monitor_on = true; 1510 1511 iwl_mvm_vif_dbgfs_register(mvm, vif); 1512 goto out_unlock; 1513 1514 out_unbind: 1515 iwl_mvm_binding_remove_vif(mvm, vif); 1516 out_unref_phy: 1517 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1518 out_free_bf: 1519 if (mvm->bf_allowed_vif == mvmvif) { 1520 mvm->bf_allowed_vif = NULL; 1521 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1522 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1523 } 1524 out_remove_mac: 1525 mvmvif->phy_ctxt = NULL; 1526 iwl_mvm_mac_ctxt_remove(mvm, vif); 1527 out_release: 1528 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1529 mvm->vif_count--; 1530 out_unlock: 1531 mutex_unlock(&mvm->mutex); 1532 1533 return ret; 1534 } 1535 1536 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm, 1537 struct ieee80211_vif *vif) 1538 { 1539 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1540 /* 1541 * Flush the ROC worker which will flush the OFFCHANNEL queue. 1542 * We assume here that all the packets sent to the OFFCHANNEL 1543 * queue are sent in ROC session. 1544 */ 1545 flush_work(&mvm->roc_done_wk); 1546 } 1547 } 1548 1549 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, 1550 struct ieee80211_vif *vif) 1551 { 1552 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1553 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1554 struct iwl_probe_resp_data *probe_data; 1555 1556 iwl_mvm_prepare_mac_removal(mvm, vif); 1557 1558 if (!(vif->type == NL80211_IFTYPE_AP || 1559 vif->type == NL80211_IFTYPE_ADHOC)) 1560 iwl_mvm_tcm_rm_vif(mvm, vif); 1561 1562 mutex_lock(&mvm->mutex); 1563 1564 probe_data = rcu_dereference_protected(mvmvif->probe_resp_data, 1565 lockdep_is_held(&mvm->mutex)); 1566 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); 1567 if (probe_data) 1568 kfree_rcu(probe_data, rcu_head); 1569 1570 if (mvm->bf_allowed_vif == mvmvif) { 1571 mvm->bf_allowed_vif = NULL; 1572 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1573 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1574 } 1575 1576 if (vif->bss_conf.ftm_responder) 1577 memset(&mvm->ftm_resp_stats, 0, sizeof(mvm->ftm_resp_stats)); 1578 1579 iwl_mvm_vif_dbgfs_clean(mvm, vif); 1580 1581 /* 1582 * For AP/GO interface, the tear down of the resources allocated to the 1583 * interface is be handled as part of the stop_ap flow. 1584 */ 1585 if (vif->type == NL80211_IFTYPE_AP || 1586 vif->type == NL80211_IFTYPE_ADHOC) { 1587 #ifdef CONFIG_NL80211_TESTMODE 1588 if (vif == mvm->noa_vif) { 1589 mvm->noa_vif = NULL; 1590 mvm->noa_duration = 0; 1591 } 1592 #endif 1593 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta); 1594 iwl_mvm_dealloc_bcast_sta(mvm, vif); 1595 goto out_release; 1596 } 1597 1598 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1599 mvm->p2p_device_vif = NULL; 1600 iwl_mvm_rm_p2p_bcast_sta(mvm, vif); 1601 iwl_mvm_binding_remove_vif(mvm, vif); 1602 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1603 mvmvif->phy_ctxt = NULL; 1604 } 1605 1606 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE) 1607 mvm->vif_count--; 1608 1609 iwl_mvm_power_update_mac(mvm); 1610 iwl_mvm_mac_ctxt_remove(mvm, vif); 1611 1612 RCU_INIT_POINTER(mvm->vif_id_to_mac[mvmvif->id], NULL); 1613 1614 if (vif->type == NL80211_IFTYPE_MONITOR) 1615 mvm->monitor_on = false; 1616 1617 out_release: 1618 mutex_unlock(&mvm->mutex); 1619 } 1620 1621 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed) 1622 { 1623 return 0; 1624 } 1625 1626 struct iwl_mvm_mc_iter_data { 1627 struct iwl_mvm *mvm; 1628 int port_id; 1629 }; 1630 1631 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac, 1632 struct ieee80211_vif *vif) 1633 { 1634 struct iwl_mvm_mc_iter_data *data = _data; 1635 struct iwl_mvm *mvm = data->mvm; 1636 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd; 1637 struct iwl_host_cmd hcmd = { 1638 .id = MCAST_FILTER_CMD, 1639 .flags = CMD_ASYNC, 1640 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1641 }; 1642 int ret, len; 1643 1644 /* if we don't have free ports, mcast frames will be dropped */ 1645 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM)) 1646 return; 1647 1648 if (vif->type != NL80211_IFTYPE_STATION || 1649 !vif->bss_conf.assoc) 1650 return; 1651 1652 cmd->port_id = data->port_id++; 1653 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 1654 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4); 1655 1656 hcmd.len[0] = len; 1657 hcmd.data[0] = cmd; 1658 1659 ret = iwl_mvm_send_cmd(mvm, &hcmd); 1660 if (ret) 1661 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret); 1662 } 1663 1664 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm) 1665 { 1666 struct iwl_mvm_mc_iter_data iter_data = { 1667 .mvm = mvm, 1668 }; 1669 1670 lockdep_assert_held(&mvm->mutex); 1671 1672 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd)) 1673 return; 1674 1675 ieee80211_iterate_active_interfaces_atomic( 1676 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1677 iwl_mvm_mc_iface_iterator, &iter_data); 1678 } 1679 1680 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw, 1681 struct netdev_hw_addr_list *mc_list) 1682 { 1683 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1684 struct iwl_mcast_filter_cmd *cmd; 1685 struct netdev_hw_addr *addr; 1686 int addr_count; 1687 bool pass_all; 1688 int len; 1689 1690 addr_count = netdev_hw_addr_list_count(mc_list); 1691 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES || 1692 IWL_MVM_FW_MCAST_FILTER_PASS_ALL; 1693 if (pass_all) 1694 addr_count = 0; 1695 1696 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4); 1697 cmd = kzalloc(len, GFP_ATOMIC); 1698 if (!cmd) 1699 return 0; 1700 1701 if (pass_all) { 1702 cmd->pass_all = 1; 1703 return (u64)(unsigned long)cmd; 1704 } 1705 1706 netdev_hw_addr_list_for_each(addr, mc_list) { 1707 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n", 1708 cmd->count, addr->addr); 1709 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN], 1710 addr->addr, ETH_ALEN); 1711 cmd->count++; 1712 } 1713 1714 return (u64)(unsigned long)cmd; 1715 } 1716 1717 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw, 1718 unsigned int changed_flags, 1719 unsigned int *total_flags, 1720 u64 multicast) 1721 { 1722 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1723 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast; 1724 1725 mutex_lock(&mvm->mutex); 1726 1727 /* replace previous configuration */ 1728 kfree(mvm->mcast_filter_cmd); 1729 mvm->mcast_filter_cmd = cmd; 1730 1731 if (!cmd) 1732 goto out; 1733 1734 if (changed_flags & FIF_ALLMULTI) 1735 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI); 1736 1737 if (cmd->pass_all) 1738 cmd->count = 0; 1739 1740 iwl_mvm_recalc_multicast(mvm); 1741 out: 1742 mutex_unlock(&mvm->mutex); 1743 *total_flags = 0; 1744 } 1745 1746 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw, 1747 struct ieee80211_vif *vif, 1748 unsigned int filter_flags, 1749 unsigned int changed_flags) 1750 { 1751 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1752 1753 /* We support only filter for probe requests */ 1754 if (!(changed_flags & FIF_PROBE_REQ)) 1755 return; 1756 1757 /* Supported only for p2p client interfaces */ 1758 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1759 !vif->p2p) 1760 return; 1761 1762 mutex_lock(&mvm->mutex); 1763 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1764 mutex_unlock(&mvm->mutex); 1765 } 1766 1767 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 1768 struct iwl_bcast_iter_data { 1769 struct iwl_mvm *mvm; 1770 struct iwl_bcast_filter_cmd *cmd; 1771 u8 current_filter; 1772 }; 1773 1774 static void 1775 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif, 1776 const struct iwl_fw_bcast_filter *in_filter, 1777 struct iwl_fw_bcast_filter *out_filter) 1778 { 1779 struct iwl_fw_bcast_filter_attr *attr; 1780 int i; 1781 1782 memcpy(out_filter, in_filter, sizeof(*out_filter)); 1783 1784 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) { 1785 attr = &out_filter->attrs[i]; 1786 1787 if (!attr->mask) 1788 break; 1789 1790 switch (attr->reserved1) { 1791 case cpu_to_le16(BC_FILTER_MAGIC_IP): 1792 if (vif->bss_conf.arp_addr_cnt != 1) { 1793 attr->mask = 0; 1794 continue; 1795 } 1796 1797 attr->val = vif->bss_conf.arp_addr_list[0]; 1798 break; 1799 case cpu_to_le16(BC_FILTER_MAGIC_MAC): 1800 attr->val = *(__be32 *)&vif->addr[2]; 1801 break; 1802 default: 1803 break; 1804 } 1805 attr->reserved1 = 0; 1806 out_filter->num_attrs++; 1807 } 1808 } 1809 1810 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac, 1811 struct ieee80211_vif *vif) 1812 { 1813 struct iwl_bcast_iter_data *data = _data; 1814 struct iwl_mvm *mvm = data->mvm; 1815 struct iwl_bcast_filter_cmd *cmd = data->cmd; 1816 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1817 struct iwl_fw_bcast_mac *bcast_mac; 1818 int i; 1819 1820 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs))) 1821 return; 1822 1823 bcast_mac = &cmd->macs[mvmvif->id]; 1824 1825 /* 1826 * enable filtering only for associated stations, but not for P2P 1827 * Clients 1828 */ 1829 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p || 1830 !vif->bss_conf.assoc) 1831 return; 1832 1833 bcast_mac->default_discard = 1; 1834 1835 /* copy all configured filters */ 1836 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) { 1837 /* 1838 * Make sure we don't exceed our filters limit. 1839 * if there is still a valid filter to be configured, 1840 * be on the safe side and just allow bcast for this mac. 1841 */ 1842 if (WARN_ON_ONCE(data->current_filter >= 1843 ARRAY_SIZE(cmd->filters))) { 1844 bcast_mac->default_discard = 0; 1845 bcast_mac->attached_filters = 0; 1846 break; 1847 } 1848 1849 iwl_mvm_set_bcast_filter(vif, 1850 &mvm->bcast_filters[i], 1851 &cmd->filters[data->current_filter]); 1852 1853 /* skip current filter if it contains no attributes */ 1854 if (!cmd->filters[data->current_filter].num_attrs) 1855 continue; 1856 1857 /* attach the filter to current mac */ 1858 bcast_mac->attached_filters |= 1859 cpu_to_le16(BIT(data->current_filter)); 1860 1861 data->current_filter++; 1862 } 1863 } 1864 1865 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm, 1866 struct iwl_bcast_filter_cmd *cmd) 1867 { 1868 struct iwl_bcast_iter_data iter_data = { 1869 .mvm = mvm, 1870 .cmd = cmd, 1871 }; 1872 1873 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL) 1874 return false; 1875 1876 memset(cmd, 0, sizeof(*cmd)); 1877 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters); 1878 cmd->max_macs = ARRAY_SIZE(cmd->macs); 1879 1880 #ifdef CONFIG_IWLWIFI_DEBUGFS 1881 /* use debugfs filters/macs if override is configured */ 1882 if (mvm->dbgfs_bcast_filtering.override) { 1883 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters, 1884 sizeof(cmd->filters)); 1885 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs, 1886 sizeof(cmd->macs)); 1887 return true; 1888 } 1889 #endif 1890 1891 /* if no filters are configured, do nothing */ 1892 if (!mvm->bcast_filters) 1893 return false; 1894 1895 /* configure and attach these filters for each associated sta vif */ 1896 ieee80211_iterate_active_interfaces( 1897 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1898 iwl_mvm_bcast_filter_iterator, &iter_data); 1899 1900 return true; 1901 } 1902 1903 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1904 { 1905 struct iwl_bcast_filter_cmd cmd; 1906 1907 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING)) 1908 return 0; 1909 1910 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) 1911 return 0; 1912 1913 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0, 1914 sizeof(cmd), &cmd); 1915 } 1916 #else 1917 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1918 { 1919 return 0; 1920 } 1921 #endif 1922 1923 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm, 1924 struct ieee80211_vif *vif) 1925 { 1926 struct iwl_mu_group_mgmt_cmd cmd = {}; 1927 1928 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership, 1929 WLAN_MEMBERSHIP_LEN); 1930 memcpy(cmd.user_position, vif->bss_conf.mu_group.position, 1931 WLAN_USER_POSITION_LEN); 1932 1933 return iwl_mvm_send_cmd_pdu(mvm, 1934 WIDE_ID(DATA_PATH_GROUP, 1935 UPDATE_MU_GROUPS_CMD), 1936 0, sizeof(cmd), &cmd); 1937 } 1938 1939 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac, 1940 struct ieee80211_vif *vif) 1941 { 1942 if (vif->mu_mimo_owner) { 1943 struct iwl_mu_group_mgmt_notif *notif = _data; 1944 1945 /* 1946 * MU-MIMO Group Id action frame is little endian. We treat 1947 * the data received from firmware as if it came from the 1948 * action frame, so no conversion is needed. 1949 */ 1950 ieee80211_update_mu_groups(vif, 1951 (u8 *)¬if->membership_status, 1952 (u8 *)¬if->user_position); 1953 } 1954 } 1955 1956 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm, 1957 struct iwl_rx_cmd_buffer *rxb) 1958 { 1959 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1960 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data; 1961 1962 ieee80211_iterate_active_interfaces_atomic( 1963 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1964 iwl_mvm_mu_mimo_iface_iterator, notif); 1965 } 1966 1967 static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit) 1968 { 1969 u8 byte_num = ppe_pos_bit / 8; 1970 u8 bit_num = ppe_pos_bit % 8; 1971 u8 residue_bits; 1972 u8 res; 1973 1974 if (bit_num <= 5) 1975 return (ppe[byte_num] >> bit_num) & 1976 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1); 1977 1978 /* 1979 * If bit_num > 5, we have to combine bits with next byte. 1980 * Calculate how many bits we need to take from current byte (called 1981 * here "residue_bits"), and add them to bits from next byte. 1982 */ 1983 1984 residue_bits = 8 - bit_num; 1985 1986 res = (ppe[byte_num + 1] & 1987 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE - residue_bits) - 1)) << 1988 residue_bits; 1989 res += (ppe[byte_num] >> bit_num) & (BIT(residue_bits) - 1); 1990 1991 return res; 1992 } 1993 1994 static void iwl_mvm_cfg_he_sta(struct iwl_mvm *mvm, 1995 struct ieee80211_vif *vif, u8 sta_id) 1996 { 1997 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1998 struct iwl_he_sta_context_cmd sta_ctxt_cmd = { 1999 .sta_id = sta_id, 2000 .tid_limit = IWL_MAX_TID_COUNT, 2001 .bss_color = vif->bss_conf.he_bss_color.color, 2002 .htc_trig_based_pkt_ext = vif->bss_conf.htc_trig_based_pkt_ext, 2003 .frame_time_rts_th = 2004 cpu_to_le16(vif->bss_conf.frame_time_rts_th), 2005 }; 2006 int size = fw_has_api(&mvm->fw->ucode_capa, 2007 IWL_UCODE_TLV_API_MBSSID_HE) ? 2008 sizeof(sta_ctxt_cmd) : 2009 sizeof(struct iwl_he_sta_context_cmd_v1); 2010 struct ieee80211_sta *sta; 2011 u32 flags; 2012 int i; 2013 const struct ieee80211_sta_he_cap *own_he_cap = NULL; 2014 struct ieee80211_chanctx_conf *chanctx_conf; 2015 const struct ieee80211_supported_band *sband; 2016 2017 rcu_read_lock(); 2018 2019 chanctx_conf = rcu_dereference(vif->chanctx_conf); 2020 if (WARN_ON(!chanctx_conf)) { 2021 rcu_read_unlock(); 2022 return; 2023 } 2024 2025 sband = mvm->hw->wiphy->bands[chanctx_conf->def.chan->band]; 2026 own_he_cap = ieee80211_get_he_iftype_cap(sband, 2027 ieee80211_vif_type_p2p(vif)); 2028 2029 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_ctxt_cmd.sta_id]); 2030 if (IS_ERR_OR_NULL(sta)) { 2031 rcu_read_unlock(); 2032 WARN(1, "Can't find STA to configure HE\n"); 2033 return; 2034 } 2035 2036 if (!sta->he_cap.has_he) { 2037 rcu_read_unlock(); 2038 return; 2039 } 2040 2041 flags = 0; 2042 2043 /* Block 26-tone RU OFDMA transmissions */ 2044 if (mvmvif->he_ru_2mhz_block) 2045 flags |= STA_CTXT_HE_RU_2MHZ_BLOCK; 2046 2047 /* HTC flags */ 2048 if (sta->he_cap.he_cap_elem.mac_cap_info[0] & 2049 IEEE80211_HE_MAC_CAP0_HTC_HE) 2050 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_SUPPORT); 2051 if ((sta->he_cap.he_cap_elem.mac_cap_info[1] & 2052 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION) || 2053 (sta->he_cap.he_cap_elem.mac_cap_info[2] & 2054 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION)) { 2055 u8 link_adap = 2056 ((sta->he_cap.he_cap_elem.mac_cap_info[2] & 2057 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION) << 1) + 2058 (sta->he_cap.he_cap_elem.mac_cap_info[1] & 2059 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION); 2060 2061 if (link_adap == 2) 2062 sta_ctxt_cmd.htc_flags |= 2063 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_UNSOLICITED); 2064 else if (link_adap == 3) 2065 sta_ctxt_cmd.htc_flags |= 2066 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_BOTH); 2067 } 2068 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_BSR) 2069 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BSR_SUPP); 2070 if (sta->he_cap.he_cap_elem.mac_cap_info[3] & 2071 IEEE80211_HE_MAC_CAP3_OMI_CONTROL) 2072 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_OMI_SUPP); 2073 if (sta->he_cap.he_cap_elem.mac_cap_info[4] & IEEE80211_HE_MAC_CAP4_BQR) 2074 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BQR_SUPP); 2075 2076 /* 2077 * Initialize the PPE thresholds to "None" (7), as described in Table 2078 * 9-262ac of 80211.ax/D3.0. 2079 */ 2080 memset(&sta_ctxt_cmd.pkt_ext, 7, sizeof(sta_ctxt_cmd.pkt_ext)); 2081 2082 /* If PPE Thresholds exist, parse them into a FW-familiar format. */ 2083 if (sta->he_cap.he_cap_elem.phy_cap_info[6] & 2084 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) { 2085 u8 nss = (sta->he_cap.ppe_thres[0] & 2086 IEEE80211_PPE_THRES_NSS_MASK) + 1; 2087 u8 ru_index_bitmap = 2088 (sta->he_cap.ppe_thres[0] & 2089 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK) >> 2090 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS; 2091 u8 *ppe = &sta->he_cap.ppe_thres[0]; 2092 u8 ppe_pos_bit = 7; /* Starting after PPE header */ 2093 2094 /* 2095 * FW currently supports only nss == MAX_HE_SUPP_NSS 2096 * 2097 * If nss > MAX: we can ignore values we don't support 2098 * If nss < MAX: we can set zeros in other streams 2099 */ 2100 if (nss > MAX_HE_SUPP_NSS) { 2101 IWL_INFO(mvm, "Got NSS = %d - trimming to %d\n", nss, 2102 MAX_HE_SUPP_NSS); 2103 nss = MAX_HE_SUPP_NSS; 2104 } 2105 2106 for (i = 0; i < nss; i++) { 2107 u8 ru_index_tmp = ru_index_bitmap << 1; 2108 u8 bw; 2109 2110 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; bw++) { 2111 ru_index_tmp >>= 1; 2112 if (!(ru_index_tmp & 1)) 2113 continue; 2114 2115 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][1] = 2116 iwl_mvm_he_get_ppe_val(ppe, 2117 ppe_pos_bit); 2118 ppe_pos_bit += 2119 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2120 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][0] = 2121 iwl_mvm_he_get_ppe_val(ppe, 2122 ppe_pos_bit); 2123 ppe_pos_bit += 2124 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2125 } 2126 } 2127 2128 flags |= STA_CTXT_HE_PACKET_EXT; 2129 } else if ((sta->he_cap.he_cap_elem.phy_cap_info[9] & 2130 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) != 2131 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_RESERVED) { 2132 int low_th = -1; 2133 int high_th = -1; 2134 2135 /* Take the PPE thresholds from the nominal padding info */ 2136 switch (sta->he_cap.he_cap_elem.phy_cap_info[9] & 2137 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) { 2138 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_0US: 2139 low_th = IWL_HE_PKT_EXT_NONE; 2140 high_th = IWL_HE_PKT_EXT_NONE; 2141 break; 2142 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_8US: 2143 low_th = IWL_HE_PKT_EXT_BPSK; 2144 high_th = IWL_HE_PKT_EXT_NONE; 2145 break; 2146 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_16US: 2147 low_th = IWL_HE_PKT_EXT_NONE; 2148 high_th = IWL_HE_PKT_EXT_BPSK; 2149 break; 2150 } 2151 2152 /* Set the PPE thresholds accordingly */ 2153 if (low_th >= 0 && high_th >= 0) { 2154 struct iwl_he_pkt_ext *pkt_ext = 2155 (struct iwl_he_pkt_ext *)&sta_ctxt_cmd.pkt_ext; 2156 2157 for (i = 0; i < MAX_HE_SUPP_NSS; i++) { 2158 u8 bw; 2159 2160 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; 2161 bw++) { 2162 pkt_ext->pkt_ext_qam_th[i][bw][0] = 2163 low_th; 2164 pkt_ext->pkt_ext_qam_th[i][bw][1] = 2165 high_th; 2166 } 2167 } 2168 2169 flags |= STA_CTXT_HE_PACKET_EXT; 2170 } 2171 } 2172 2173 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & 2174 IEEE80211_HE_MAC_CAP2_32BIT_BA_BITMAP) 2175 flags |= STA_CTXT_HE_32BIT_BA_BITMAP; 2176 2177 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & 2178 IEEE80211_HE_MAC_CAP2_ACK_EN) 2179 flags |= STA_CTXT_HE_ACK_ENABLED; 2180 2181 rcu_read_unlock(); 2182 2183 /* Mark MU EDCA as enabled, unless none detected on some AC */ 2184 flags |= STA_CTXT_HE_MU_EDCA_CW; 2185 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 2186 struct ieee80211_he_mu_edca_param_ac_rec *mu_edca = 2187 &mvmvif->queue_params[i].mu_edca_param_rec; 2188 u8 ac = iwl_mvm_mac80211_ac_to_ucode_ac(i); 2189 2190 if (!mvmvif->queue_params[i].mu_edca) { 2191 flags &= ~STA_CTXT_HE_MU_EDCA_CW; 2192 break; 2193 } 2194 2195 sta_ctxt_cmd.trig_based_txf[ac].cwmin = 2196 cpu_to_le16(mu_edca->ecw_min_max & 0xf); 2197 sta_ctxt_cmd.trig_based_txf[ac].cwmax = 2198 cpu_to_le16((mu_edca->ecw_min_max & 0xf0) >> 4); 2199 sta_ctxt_cmd.trig_based_txf[ac].aifsn = 2200 cpu_to_le16(mu_edca->aifsn); 2201 sta_ctxt_cmd.trig_based_txf[ac].mu_time = 2202 cpu_to_le16(mu_edca->mu_edca_timer); 2203 } 2204 2205 2206 if (vif->bss_conf.uora_exists) { 2207 flags |= STA_CTXT_HE_TRIG_RND_ALLOC; 2208 2209 sta_ctxt_cmd.rand_alloc_ecwmin = 2210 vif->bss_conf.uora_ocw_range & 0x7; 2211 sta_ctxt_cmd.rand_alloc_ecwmax = 2212 (vif->bss_conf.uora_ocw_range >> 3) & 0x7; 2213 } 2214 2215 if (own_he_cap && !(own_he_cap->he_cap_elem.mac_cap_info[2] & 2216 IEEE80211_HE_MAC_CAP2_ACK_EN)) 2217 flags |= STA_CTXT_HE_NIC_NOT_ACK_ENABLED; 2218 2219 if (vif->bss_conf.nontransmitted) { 2220 flags |= STA_CTXT_HE_REF_BSSID_VALID; 2221 ether_addr_copy(sta_ctxt_cmd.ref_bssid_addr, 2222 vif->bss_conf.transmitter_bssid); 2223 sta_ctxt_cmd.max_bssid_indicator = 2224 vif->bss_conf.bssid_indicator; 2225 sta_ctxt_cmd.bssid_index = vif->bss_conf.bssid_index; 2226 sta_ctxt_cmd.ema_ap = vif->bss_conf.ema_ap; 2227 sta_ctxt_cmd.profile_periodicity = 2228 vif->bss_conf.profile_periodicity; 2229 } 2230 2231 sta_ctxt_cmd.flags = cpu_to_le32(flags); 2232 2233 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(STA_HE_CTXT_CMD, 2234 DATA_PATH_GROUP, 0), 2235 0, size, &sta_ctxt_cmd)) 2236 IWL_ERR(mvm, "Failed to config FW to work HE!\n"); 2237 } 2238 2239 static void iwl_mvm_protect_assoc(struct iwl_mvm *mvm, 2240 struct ieee80211_vif *vif, 2241 u32 duration_override) 2242 { 2243 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS; 2244 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS; 2245 2246 if (duration_override > duration) 2247 duration = duration_override; 2248 2249 /* Try really hard to protect the session and hear a beacon 2250 * The new session protection command allows us to protect the 2251 * session for a much longer time since the firmware will internally 2252 * create two events: a 300TU one with a very high priority that 2253 * won't be fragmented which should be enough for 99% of the cases, 2254 * and another one (which we configure here to be 900TU long) which 2255 * will have a slightly lower priority, but more importantly, can be 2256 * fragmented so that it'll allow other activities to run. 2257 */ 2258 if (fw_has_capa(&mvm->fw->ucode_capa, 2259 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) 2260 iwl_mvm_schedule_session_protection(mvm, vif, 900, 2261 min_duration, false); 2262 else 2263 iwl_mvm_protect_session(mvm, vif, duration, 2264 min_duration, 500, false); 2265 } 2266 2267 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, 2268 struct ieee80211_vif *vif, 2269 struct ieee80211_bss_conf *bss_conf, 2270 u32 changes) 2271 { 2272 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2273 int ret; 2274 2275 /* 2276 * Re-calculate the tsf id, as the leader-follower relations depend 2277 * on the beacon interval, which was not known when the station 2278 * interface was added. 2279 */ 2280 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) { 2281 if (vif->bss_conf.he_support && 2282 !iwlwifi_mod_params.disable_11ax) 2283 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id); 2284 2285 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2286 } 2287 2288 /* Update MU EDCA params */ 2289 if (changes & BSS_CHANGED_QOS && mvmvif->associated && 2290 bss_conf->assoc && vif->bss_conf.he_support && 2291 !iwlwifi_mod_params.disable_11ax) 2292 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id); 2293 2294 /* 2295 * If we're not associated yet, take the (new) BSSID before associating 2296 * so the firmware knows. If we're already associated, then use the old 2297 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC 2298 * branch for disassociation below. 2299 */ 2300 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated) 2301 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2302 2303 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid); 2304 if (ret) 2305 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2306 2307 /* after sending it once, adopt mac80211 data */ 2308 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2309 mvmvif->associated = bss_conf->assoc; 2310 2311 if (changes & BSS_CHANGED_ASSOC) { 2312 if (bss_conf->assoc) { 2313 /* clear statistics to get clean beacon counter */ 2314 iwl_mvm_request_statistics(mvm, true); 2315 memset(&mvmvif->beacon_stats, 0, 2316 sizeof(mvmvif->beacon_stats)); 2317 2318 /* add quota for this interface */ 2319 ret = iwl_mvm_update_quotas(mvm, true, NULL); 2320 if (ret) { 2321 IWL_ERR(mvm, "failed to update quotas\n"); 2322 return; 2323 } 2324 2325 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2326 &mvm->status) && 2327 !fw_has_capa(&mvm->fw->ucode_capa, 2328 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) { 2329 /* 2330 * If we're restarting then the firmware will 2331 * obviously have lost synchronisation with 2332 * the AP. It will attempt to synchronise by 2333 * itself, but we can make it more reliable by 2334 * scheduling a session protection time event. 2335 * 2336 * The firmware needs to receive a beacon to 2337 * catch up with synchronisation, use 110% of 2338 * the beacon interval. 2339 * 2340 * Set a large maximum delay to allow for more 2341 * than a single interface. 2342 * 2343 * For new firmware versions, rely on the 2344 * firmware. This is relevant for DCM scenarios 2345 * only anyway. 2346 */ 2347 u32 dur = (11 * vif->bss_conf.beacon_int) / 10; 2348 iwl_mvm_protect_session(mvm, vif, dur, dur, 2349 5 * dur, false); 2350 } else if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2351 &mvm->status) && 2352 !vif->bss_conf.dtim_period) { 2353 /* 2354 * If we're not restarting and still haven't 2355 * heard a beacon (dtim period unknown) then 2356 * make sure we still have enough minimum time 2357 * remaining in the time event, since the auth 2358 * might actually have taken quite a while 2359 * (especially for SAE) and so the remaining 2360 * time could be small without us having heard 2361 * a beacon yet. 2362 */ 2363 iwl_mvm_protect_assoc(mvm, vif, 0); 2364 } 2365 2366 iwl_mvm_sf_update(mvm, vif, false); 2367 iwl_mvm_power_vif_assoc(mvm, vif); 2368 if (vif->p2p) { 2369 iwl_mvm_update_smps(mvm, vif, 2370 IWL_MVM_SMPS_REQ_PROT, 2371 IEEE80211_SMPS_DYNAMIC); 2372 } 2373 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 2374 /* 2375 * If update fails - SF might be running in associated 2376 * mode while disassociated - which is forbidden. 2377 */ 2378 ret = iwl_mvm_sf_update(mvm, vif, false); 2379 WARN_ONCE(ret && 2380 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 2381 &mvm->status), 2382 "Failed to update SF upon disassociation\n"); 2383 2384 /* 2385 * If we get an assert during the connection (after the 2386 * station has been added, but before the vif is set 2387 * to associated), mac80211 will re-add the station and 2388 * then configure the vif. Since the vif is not 2389 * associated, we would remove the station here and 2390 * this would fail the recovery. 2391 */ 2392 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2393 &mvm->status)) { 2394 /* 2395 * Remove AP station now that 2396 * the MAC is unassoc 2397 */ 2398 ret = iwl_mvm_rm_sta_id(mvm, vif, 2399 mvmvif->ap_sta_id); 2400 if (ret) 2401 IWL_ERR(mvm, 2402 "failed to remove AP station\n"); 2403 2404 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 2405 } 2406 2407 /* remove quota for this interface */ 2408 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2409 if (ret) 2410 IWL_ERR(mvm, "failed to update quotas\n"); 2411 2412 /* this will take the cleared BSSID from bss_conf */ 2413 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2414 if (ret) 2415 IWL_ERR(mvm, 2416 "failed to update MAC %pM (clear after unassoc)\n", 2417 vif->addr); 2418 } 2419 2420 /* 2421 * The firmware tracks the MU-MIMO group on its own. 2422 * However, on HW restart we should restore this data. 2423 */ 2424 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2425 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) { 2426 ret = iwl_mvm_update_mu_groups(mvm, vif); 2427 if (ret) 2428 IWL_ERR(mvm, 2429 "failed to update VHT MU_MIMO groups\n"); 2430 } 2431 2432 iwl_mvm_recalc_multicast(mvm); 2433 iwl_mvm_configure_bcast_filter(mvm); 2434 2435 /* reset rssi values */ 2436 mvmvif->bf_data.ave_beacon_signal = 0; 2437 2438 iwl_mvm_bt_coex_vif_change(mvm); 2439 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, 2440 IEEE80211_SMPS_AUTOMATIC); 2441 if (fw_has_capa(&mvm->fw->ucode_capa, 2442 IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2443 iwl_mvm_config_scan(mvm); 2444 } 2445 2446 if (changes & BSS_CHANGED_BEACON_INFO) { 2447 /* 2448 * We received a beacon from the associated AP so 2449 * remove the session protection. 2450 * A firmware with the new API will remove it automatically. 2451 */ 2452 if (!fw_has_capa(&mvm->fw->ucode_capa, 2453 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) 2454 iwl_mvm_stop_session_protection(mvm, vif); 2455 2456 iwl_mvm_sf_update(mvm, vif, false); 2457 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2458 } 2459 2460 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS | 2461 /* 2462 * Send power command on every beacon change, 2463 * because we may have not enabled beacon abort yet. 2464 */ 2465 BSS_CHANGED_BEACON_INFO)) { 2466 ret = iwl_mvm_power_update_mac(mvm); 2467 if (ret) 2468 IWL_ERR(mvm, "failed to update power mode\n"); 2469 } 2470 2471 if (changes & BSS_CHANGED_CQM) { 2472 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n"); 2473 /* reset cqm events tracking */ 2474 mvmvif->bf_data.last_cqm_event = 0; 2475 if (mvmvif->bf_data.bf_enabled) { 2476 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 2477 if (ret) 2478 IWL_ERR(mvm, 2479 "failed to update CQM thresholds\n"); 2480 } 2481 } 2482 2483 if (changes & BSS_CHANGED_ARP_FILTER) { 2484 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n"); 2485 iwl_mvm_configure_bcast_filter(mvm); 2486 } 2487 2488 if (changes & BSS_CHANGED_BANDWIDTH) 2489 iwl_mvm_apply_fw_smps_request(vif); 2490 } 2491 2492 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw, 2493 struct ieee80211_vif *vif) 2494 { 2495 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2496 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2497 int ret, i; 2498 2499 mutex_lock(&mvm->mutex); 2500 2501 /* Send the beacon template */ 2502 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif); 2503 if (ret) 2504 goto out_unlock; 2505 2506 /* 2507 * Re-calculate the tsf id, as the leader-follower relations depend on 2508 * the beacon interval, which was not known when the AP interface 2509 * was added. 2510 */ 2511 if (vif->type == NL80211_IFTYPE_AP) 2512 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2513 2514 mvmvif->ap_assoc_sta_count = 0; 2515 2516 /* Add the mac context */ 2517 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 2518 if (ret) 2519 goto out_unlock; 2520 2521 /* Perform the binding */ 2522 ret = iwl_mvm_binding_add_vif(mvm, vif); 2523 if (ret) 2524 goto out_remove; 2525 2526 /* 2527 * This is not very nice, but the simplest: 2528 * For older FWs adding the mcast sta before the bcast station may 2529 * cause assert 0x2b00. 2530 * This is fixed in later FW so make the order of removal depend on 2531 * the TLV 2532 */ 2533 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2534 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2535 if (ret) 2536 goto out_unbind; 2537 /* 2538 * Send the bcast station. At this stage the TBTT and DTIM time 2539 * events are added and applied to the scheduler 2540 */ 2541 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2542 if (ret) { 2543 iwl_mvm_rm_mcast_sta(mvm, vif); 2544 goto out_unbind; 2545 } 2546 } else { 2547 /* 2548 * Send the bcast station. At this stage the TBTT and DTIM time 2549 * events are added and applied to the scheduler 2550 */ 2551 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2552 if (ret) 2553 goto out_unbind; 2554 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2555 if (ret) { 2556 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2557 goto out_unbind; 2558 } 2559 } 2560 2561 /* must be set before quota calculations */ 2562 mvmvif->ap_ibss_active = true; 2563 2564 /* send all the early keys to the device now */ 2565 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) { 2566 struct ieee80211_key_conf *key = mvmvif->ap_early_keys[i]; 2567 2568 if (!key) 2569 continue; 2570 2571 mvmvif->ap_early_keys[i] = NULL; 2572 2573 ret = __iwl_mvm_mac_set_key(hw, SET_KEY, vif, NULL, key); 2574 if (ret) 2575 goto out_quota_failed; 2576 } 2577 2578 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) { 2579 iwl_mvm_vif_set_low_latency(mvmvif, true, 2580 LOW_LATENCY_VIF_TYPE); 2581 iwl_mvm_send_low_latency_cmd(mvm, true, mvmvif->id); 2582 } 2583 2584 /* power updated needs to be done before quotas */ 2585 iwl_mvm_power_update_mac(mvm); 2586 2587 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2588 if (ret) 2589 goto out_quota_failed; 2590 2591 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2592 if (vif->p2p && mvm->p2p_device_vif) 2593 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2594 2595 iwl_mvm_bt_coex_vif_change(mvm); 2596 2597 /* we don't support TDLS during DCM */ 2598 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2599 iwl_mvm_teardown_tdls_peers(mvm); 2600 2601 iwl_mvm_ftm_restart_responder(mvm, vif); 2602 2603 goto out_unlock; 2604 2605 out_quota_failed: 2606 iwl_mvm_power_update_mac(mvm); 2607 mvmvif->ap_ibss_active = false; 2608 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2609 iwl_mvm_rm_mcast_sta(mvm, vif); 2610 out_unbind: 2611 iwl_mvm_binding_remove_vif(mvm, vif); 2612 out_remove: 2613 iwl_mvm_mac_ctxt_remove(mvm, vif); 2614 out_unlock: 2615 mutex_unlock(&mvm->mutex); 2616 return ret; 2617 } 2618 2619 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw, 2620 struct ieee80211_vif *vif) 2621 { 2622 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2623 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2624 2625 iwl_mvm_prepare_mac_removal(mvm, vif); 2626 2627 mutex_lock(&mvm->mutex); 2628 2629 /* Handle AP stop while in CSA */ 2630 if (rcu_access_pointer(mvm->csa_vif) == vif) { 2631 iwl_mvm_remove_time_event(mvm, mvmvif, 2632 &mvmvif->time_event_data); 2633 RCU_INIT_POINTER(mvm->csa_vif, NULL); 2634 mvmvif->csa_countdown = false; 2635 } 2636 2637 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) { 2638 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 2639 mvm->csa_tx_block_bcn_timeout = 0; 2640 } 2641 2642 mvmvif->ap_ibss_active = false; 2643 mvm->ap_last_beacon_gp2 = 0; 2644 2645 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) { 2646 iwl_mvm_vif_set_low_latency(mvmvif, false, 2647 LOW_LATENCY_VIF_TYPE); 2648 iwl_mvm_send_low_latency_cmd(mvm, false, mvmvif->id); 2649 } 2650 2651 iwl_mvm_bt_coex_vif_change(mvm); 2652 2653 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2654 if (vif->p2p && mvm->p2p_device_vif) 2655 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2656 2657 iwl_mvm_update_quotas(mvm, false, NULL); 2658 2659 iwl_mvm_ftm_responder_clear(mvm, vif); 2660 2661 /* 2662 * This is not very nice, but the simplest: 2663 * For older FWs removing the mcast sta before the bcast station may 2664 * cause assert 0x2b00. 2665 * This is fixed in later FW (which will stop beaconing when removing 2666 * bcast station). 2667 * So make the order of removal depend on the TLV 2668 */ 2669 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2670 iwl_mvm_rm_mcast_sta(mvm, vif); 2671 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2672 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2673 iwl_mvm_rm_mcast_sta(mvm, vif); 2674 iwl_mvm_binding_remove_vif(mvm, vif); 2675 2676 iwl_mvm_power_update_mac(mvm); 2677 2678 iwl_mvm_mac_ctxt_remove(mvm, vif); 2679 2680 mutex_unlock(&mvm->mutex); 2681 } 2682 2683 static void 2684 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm, 2685 struct ieee80211_vif *vif, 2686 struct ieee80211_bss_conf *bss_conf, 2687 u32 changes) 2688 { 2689 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2690 2691 /* Changes will be applied when the AP/IBSS is started */ 2692 if (!mvmvif->ap_ibss_active) 2693 return; 2694 2695 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT | 2696 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) && 2697 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL)) 2698 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2699 2700 /* Need to send a new beacon template to the FW */ 2701 if (changes & BSS_CHANGED_BEACON && 2702 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif)) 2703 IWL_WARN(mvm, "Failed updating beacon data\n"); 2704 2705 if (changes & BSS_CHANGED_FTM_RESPONDER) { 2706 int ret = iwl_mvm_ftm_start_responder(mvm, vif); 2707 2708 if (ret) 2709 IWL_WARN(mvm, "Failed to enable FTM responder (%d)\n", 2710 ret); 2711 } 2712 2713 } 2714 2715 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, 2716 struct ieee80211_vif *vif, 2717 struct ieee80211_bss_conf *bss_conf, 2718 u32 changes) 2719 { 2720 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2721 2722 mutex_lock(&mvm->mutex); 2723 2724 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle) 2725 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2726 2727 switch (vif->type) { 2728 case NL80211_IFTYPE_STATION: 2729 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes); 2730 break; 2731 case NL80211_IFTYPE_AP: 2732 case NL80211_IFTYPE_ADHOC: 2733 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes); 2734 break; 2735 case NL80211_IFTYPE_MONITOR: 2736 if (changes & BSS_CHANGED_MU_GROUPS) 2737 iwl_mvm_update_mu_groups(mvm, vif); 2738 break; 2739 default: 2740 /* shouldn't happen */ 2741 WARN_ON_ONCE(1); 2742 } 2743 2744 if (changes & BSS_CHANGED_TXPOWER) { 2745 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d dBm\n", 2746 bss_conf->txpower); 2747 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2748 } 2749 2750 mutex_unlock(&mvm->mutex); 2751 } 2752 2753 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, 2754 struct ieee80211_vif *vif, 2755 struct ieee80211_scan_request *hw_req) 2756 { 2757 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2758 int ret; 2759 2760 if (hw_req->req.n_channels == 0 || 2761 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels) 2762 return -EINVAL; 2763 2764 mutex_lock(&mvm->mutex); 2765 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies); 2766 mutex_unlock(&mvm->mutex); 2767 2768 return ret; 2769 } 2770 2771 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw, 2772 struct ieee80211_vif *vif) 2773 { 2774 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2775 2776 mutex_lock(&mvm->mutex); 2777 2778 /* Due to a race condition, it's possible that mac80211 asks 2779 * us to stop a hw_scan when it's already stopped. This can 2780 * happen, for instance, if we stopped the scan ourselves, 2781 * called ieee80211_scan_completed() and the userspace called 2782 * cancel scan scan before ieee80211_scan_work() could run. 2783 * To handle that, simply return if the scan is not running. 2784 */ 2785 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) 2786 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2787 2788 mutex_unlock(&mvm->mutex); 2789 } 2790 2791 static void 2792 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw, 2793 struct ieee80211_sta *sta, u16 tids, 2794 int num_frames, 2795 enum ieee80211_frame_release_type reason, 2796 bool more_data) 2797 { 2798 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2799 2800 /* Called when we need to transmit (a) frame(s) from mac80211 */ 2801 2802 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2803 tids, more_data, false); 2804 } 2805 2806 static void 2807 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw, 2808 struct ieee80211_sta *sta, u16 tids, 2809 int num_frames, 2810 enum ieee80211_frame_release_type reason, 2811 bool more_data) 2812 { 2813 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2814 2815 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */ 2816 2817 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2818 tids, more_data, true); 2819 } 2820 2821 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2822 enum sta_notify_cmd cmd, 2823 struct ieee80211_sta *sta) 2824 { 2825 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2826 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2827 unsigned long txqs = 0, tids = 0; 2828 int tid; 2829 2830 /* 2831 * If we have TVQM then we get too high queue numbers - luckily 2832 * we really shouldn't get here with that because such hardware 2833 * should have firmware supporting buffer station offload. 2834 */ 2835 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 2836 return; 2837 2838 spin_lock_bh(&mvmsta->lock); 2839 for (tid = 0; tid < ARRAY_SIZE(mvmsta->tid_data); tid++) { 2840 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2841 2842 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE) 2843 continue; 2844 2845 __set_bit(tid_data->txq_id, &txqs); 2846 2847 if (iwl_mvm_tid_queued(mvm, tid_data) == 0) 2848 continue; 2849 2850 __set_bit(tid, &tids); 2851 } 2852 2853 switch (cmd) { 2854 case STA_NOTIFY_SLEEP: 2855 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT) 2856 ieee80211_sta_set_buffered(sta, tid, true); 2857 2858 if (txqs) 2859 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true); 2860 /* 2861 * The fw updates the STA to be asleep. Tx packets on the Tx 2862 * queues to this station will not be transmitted. The fw will 2863 * send a Tx response with TX_STATUS_FAIL_DEST_PS. 2864 */ 2865 break; 2866 case STA_NOTIFY_AWAKE: 2867 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA)) 2868 break; 2869 2870 if (txqs) 2871 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false); 2872 iwl_mvm_sta_modify_ps_wake(mvm, sta); 2873 break; 2874 default: 2875 break; 2876 } 2877 spin_unlock_bh(&mvmsta->lock); 2878 } 2879 2880 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2881 struct ieee80211_vif *vif, 2882 enum sta_notify_cmd cmd, 2883 struct ieee80211_sta *sta) 2884 { 2885 __iwl_mvm_mac_sta_notify(hw, cmd, sta); 2886 } 2887 2888 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 2889 { 2890 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2891 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data; 2892 struct ieee80211_sta *sta; 2893 struct iwl_mvm_sta *mvmsta; 2894 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE); 2895 2896 if (WARN_ON(notif->sta_id >= mvm->fw->ucode_capa.num_stations)) 2897 return; 2898 2899 rcu_read_lock(); 2900 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]); 2901 if (WARN_ON(IS_ERR_OR_NULL(sta))) { 2902 rcu_read_unlock(); 2903 return; 2904 } 2905 2906 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2907 2908 if (!mvmsta->vif || 2909 mvmsta->vif->type != NL80211_IFTYPE_AP) { 2910 rcu_read_unlock(); 2911 return; 2912 } 2913 2914 if (mvmsta->sleeping != sleeping) { 2915 mvmsta->sleeping = sleeping; 2916 __iwl_mvm_mac_sta_notify(mvm->hw, 2917 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, 2918 sta); 2919 ieee80211_sta_ps_transition(sta, sleeping); 2920 } 2921 2922 if (sleeping) { 2923 switch (notif->type) { 2924 case IWL_MVM_PM_EVENT_AWAKE: 2925 case IWL_MVM_PM_EVENT_ASLEEP: 2926 break; 2927 case IWL_MVM_PM_EVENT_UAPSD: 2928 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS); 2929 break; 2930 case IWL_MVM_PM_EVENT_PS_POLL: 2931 ieee80211_sta_pspoll(sta); 2932 break; 2933 default: 2934 break; 2935 } 2936 } 2937 2938 rcu_read_unlock(); 2939 } 2940 2941 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw, 2942 struct ieee80211_vif *vif, 2943 struct ieee80211_sta *sta) 2944 { 2945 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2946 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2947 2948 /* 2949 * This is called before mac80211 does RCU synchronisation, 2950 * so here we already invalidate our internal RCU-protected 2951 * station pointer. The rest of the code will thus no longer 2952 * be able to find the station this way, and we don't rely 2953 * on further RCU synchronisation after the sta_state() 2954 * callback deleted the station. 2955 */ 2956 mutex_lock(&mvm->mutex); 2957 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id])) 2958 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 2959 ERR_PTR(-ENOENT)); 2960 2961 mutex_unlock(&mvm->mutex); 2962 } 2963 2964 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2965 const u8 *bssid) 2966 { 2967 int i; 2968 2969 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 2970 struct iwl_mvm_tcm_mac *mdata; 2971 2972 mdata = &mvm->tcm.data[iwl_mvm_vif_from_mac80211(vif)->id]; 2973 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate); 2974 mdata->opened_rx_ba_sessions = false; 2975 } 2976 2977 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT)) 2978 return; 2979 2980 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) { 2981 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2982 return; 2983 } 2984 2985 if (!vif->p2p && 2986 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) { 2987 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2988 return; 2989 } 2990 2991 for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) { 2992 if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) { 2993 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2994 return; 2995 } 2996 } 2997 2998 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 2999 } 3000 3001 static void 3002 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm, 3003 struct ieee80211_vif *vif, u8 *peer_addr, 3004 enum nl80211_tdls_operation action) 3005 { 3006 struct iwl_fw_dbg_trigger_tlv *trig; 3007 struct iwl_fw_dbg_trigger_tdls *tdls_trig; 3008 3009 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 3010 FW_DBG_TRIGGER_TDLS); 3011 if (!trig) 3012 return; 3013 3014 tdls_trig = (void *)trig->data; 3015 3016 if (!(tdls_trig->action_bitmap & BIT(action))) 3017 return; 3018 3019 if (tdls_trig->peer_mode && 3020 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0) 3021 return; 3022 3023 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 3024 "TDLS event occurred, peer %pM, action %d", 3025 peer_addr, action); 3026 } 3027 3028 struct iwl_mvm_he_obss_narrow_bw_ru_data { 3029 bool tolerated; 3030 }; 3031 3032 static void iwl_mvm_check_he_obss_narrow_bw_ru_iter(struct wiphy *wiphy, 3033 struct cfg80211_bss *bss, 3034 void *_data) 3035 { 3036 struct iwl_mvm_he_obss_narrow_bw_ru_data *data = _data; 3037 const struct cfg80211_bss_ies *ies; 3038 const struct element *elem; 3039 3040 rcu_read_lock(); 3041 ies = rcu_dereference(bss->ies); 3042 elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, ies->data, 3043 ies->len); 3044 3045 if (!elem || elem->datalen < 10 || 3046 !(elem->data[10] & 3047 WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT)) { 3048 data->tolerated = false; 3049 } 3050 rcu_read_unlock(); 3051 } 3052 3053 static void iwl_mvm_check_he_obss_narrow_bw_ru(struct ieee80211_hw *hw, 3054 struct ieee80211_vif *vif) 3055 { 3056 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3057 struct iwl_mvm_he_obss_narrow_bw_ru_data iter_data = { 3058 .tolerated = true, 3059 }; 3060 3061 if (!(vif->bss_conf.chandef.chan->flags & IEEE80211_CHAN_RADAR)) { 3062 mvmvif->he_ru_2mhz_block = false; 3063 return; 3064 } 3065 3066 cfg80211_bss_iter(hw->wiphy, &vif->bss_conf.chandef, 3067 iwl_mvm_check_he_obss_narrow_bw_ru_iter, 3068 &iter_data); 3069 3070 /* 3071 * If there is at least one AP on radar channel that cannot 3072 * tolerate 26-tone RU UL OFDMA transmissions using HE TB PPDU. 3073 */ 3074 mvmvif->he_ru_2mhz_block = !iter_data.tolerated; 3075 } 3076 3077 static void iwl_mvm_reset_cca_40mhz_workaround(struct iwl_mvm *mvm, 3078 struct ieee80211_vif *vif) 3079 { 3080 struct ieee80211_supported_band *sband; 3081 const struct ieee80211_sta_he_cap *he_cap; 3082 3083 if (vif->type != NL80211_IFTYPE_STATION) 3084 return; 3085 3086 if (!mvm->cca_40mhz_workaround) 3087 return; 3088 3089 /* decrement and check that we reached zero */ 3090 mvm->cca_40mhz_workaround--; 3091 if (mvm->cca_40mhz_workaround) 3092 return; 3093 3094 sband = mvm->hw->wiphy->bands[NL80211_BAND_2GHZ]; 3095 3096 sband->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; 3097 3098 he_cap = ieee80211_get_he_iftype_cap(sband, 3099 ieee80211_vif_type_p2p(vif)); 3100 3101 if (he_cap) { 3102 /* we know that ours is writable */ 3103 struct ieee80211_sta_he_cap *he = (void *)he_cap; 3104 3105 he->he_cap_elem.phy_cap_info[0] |= 3106 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G; 3107 } 3108 } 3109 3110 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, 3111 struct ieee80211_vif *vif, 3112 struct ieee80211_sta *sta, 3113 enum ieee80211_sta_state old_state, 3114 enum ieee80211_sta_state new_state) 3115 { 3116 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3117 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3118 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3119 int ret; 3120 3121 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n", 3122 sta->addr, old_state, new_state); 3123 3124 /* this would be a mac80211 bug ... but don't crash */ 3125 if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) 3126 return test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status) ? 0 : -EINVAL; 3127 3128 /* 3129 * If we are in a STA removal flow and in DQA mode: 3130 * 3131 * This is after the sync_rcu part, so the queues have already been 3132 * flushed. No more TXs on their way in mac80211's path, and no more in 3133 * the queues. 3134 * Also, we won't be getting any new TX frames for this station. 3135 * What we might have are deferred TX frames that need to be taken care 3136 * of. 3137 * 3138 * Drop any still-queued deferred-frame before removing the STA, and 3139 * make sure the worker is no longer handling frames for this STA. 3140 */ 3141 if (old_state == IEEE80211_STA_NONE && 3142 new_state == IEEE80211_STA_NOTEXIST) { 3143 flush_work(&mvm->add_stream_wk); 3144 3145 /* 3146 * No need to make sure deferred TX indication is off since the 3147 * worker will already remove it if it was on 3148 */ 3149 3150 /* 3151 * Additionally, reset the 40 MHz capability if we disconnected 3152 * from the AP now. 3153 */ 3154 iwl_mvm_reset_cca_40mhz_workaround(mvm, vif); 3155 } 3156 3157 mutex_lock(&mvm->mutex); 3158 /* track whether or not the station is associated */ 3159 mvm_sta->sta_state = new_state; 3160 3161 if (old_state == IEEE80211_STA_NOTEXIST && 3162 new_state == IEEE80211_STA_NONE) { 3163 /* 3164 * Firmware bug - it'll crash if the beacon interval is less 3165 * than 16. We can't avoid connecting at all, so refuse the 3166 * station state change, this will cause mac80211 to abandon 3167 * attempts to connect to this AP, and eventually wpa_s will 3168 * blocklist the AP... 3169 */ 3170 if (vif->type == NL80211_IFTYPE_STATION && 3171 vif->bss_conf.beacon_int < 16) { 3172 IWL_ERR(mvm, 3173 "AP %pM beacon interval is %d, refusing due to firmware bug!\n", 3174 sta->addr, vif->bss_conf.beacon_int); 3175 ret = -EINVAL; 3176 goto out_unlock; 3177 } 3178 3179 if (vif->type == NL80211_IFTYPE_STATION) 3180 vif->bss_conf.he_support = sta->he_cap.has_he; 3181 3182 if (sta->tdls && 3183 (vif->p2p || 3184 iwl_mvm_tdls_sta_count(mvm, NULL) == 3185 IWL_MVM_TDLS_STA_COUNT || 3186 iwl_mvm_phy_ctx_count(mvm) > 1)) { 3187 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n"); 3188 ret = -EBUSY; 3189 goto out_unlock; 3190 } 3191 3192 ret = iwl_mvm_add_sta(mvm, vif, sta); 3193 if (sta->tdls && ret == 0) { 3194 iwl_mvm_recalc_tdls_state(mvm, vif, true); 3195 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3196 NL80211_TDLS_SETUP); 3197 } 3198 3199 sta->max_rc_amsdu_len = 1; 3200 } else if (old_state == IEEE80211_STA_NONE && 3201 new_state == IEEE80211_STA_AUTH) { 3202 /* 3203 * EBS may be disabled due to previous failures reported by FW. 3204 * Reset EBS status here assuming environment has been changed. 3205 */ 3206 mvm->last_ebs_successful = true; 3207 iwl_mvm_check_uapsd(mvm, vif, sta->addr); 3208 ret = 0; 3209 } else if (old_state == IEEE80211_STA_AUTH && 3210 new_state == IEEE80211_STA_ASSOC) { 3211 if (vif->type == NL80211_IFTYPE_AP) { 3212 vif->bss_conf.he_support = sta->he_cap.has_he; 3213 mvmvif->ap_assoc_sta_count++; 3214 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3215 if (vif->bss_conf.he_support && 3216 !iwlwifi_mod_params.disable_11ax) 3217 iwl_mvm_cfg_he_sta(mvm, vif, mvm_sta->sta_id); 3218 } else if (vif->type == NL80211_IFTYPE_STATION) { 3219 vif->bss_conf.he_support = sta->he_cap.has_he; 3220 3221 mvmvif->he_ru_2mhz_block = false; 3222 if (sta->he_cap.has_he) 3223 iwl_mvm_check_he_obss_narrow_bw_ru(hw, vif); 3224 3225 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3226 } 3227 3228 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3229 false); 3230 ret = iwl_mvm_update_sta(mvm, vif, sta); 3231 } else if (old_state == IEEE80211_STA_ASSOC && 3232 new_state == IEEE80211_STA_AUTHORIZED) { 3233 ret = 0; 3234 3235 /* we don't support TDLS during DCM */ 3236 if (iwl_mvm_phy_ctx_count(mvm) > 1) 3237 iwl_mvm_teardown_tdls_peers(mvm); 3238 3239 if (sta->tdls) { 3240 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3241 NL80211_TDLS_ENABLE_LINK); 3242 } else { 3243 /* enable beacon filtering */ 3244 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 3245 3246 mvmvif->authorized = 1; 3247 3248 /* 3249 * Now that the station is authorized, i.e., keys were already 3250 * installed, need to indicate to the FW that 3251 * multicast data frames can be forwarded to the driver 3252 */ 3253 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3254 } 3255 3256 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3257 true); 3258 } else if (old_state == IEEE80211_STA_AUTHORIZED && 3259 new_state == IEEE80211_STA_ASSOC) { 3260 if (!sta->tdls) { 3261 /* Multicast data frames are no longer allowed */ 3262 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3263 3264 /* 3265 * Set this after the above iwl_mvm_mac_ctxt_changed() 3266 * to avoid sending high prio again for a little time. 3267 */ 3268 mvmvif->authorized = 0; 3269 3270 /* disable beacon filtering */ 3271 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 3272 WARN_ON(ret && 3273 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 3274 &mvm->status)); 3275 } 3276 ret = 0; 3277 } else if (old_state == IEEE80211_STA_ASSOC && 3278 new_state == IEEE80211_STA_AUTH) { 3279 if (vif->type == NL80211_IFTYPE_AP) { 3280 mvmvif->ap_assoc_sta_count--; 3281 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3282 } else if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls) { 3283 /* remove session protection if still running */ 3284 iwl_mvm_stop_session_protection(mvm, vif); 3285 } 3286 ret = 0; 3287 } else if (old_state == IEEE80211_STA_AUTH && 3288 new_state == IEEE80211_STA_NONE) { 3289 ret = 0; 3290 } else if (old_state == IEEE80211_STA_NONE && 3291 new_state == IEEE80211_STA_NOTEXIST) { 3292 ret = iwl_mvm_rm_sta(mvm, vif, sta); 3293 if (sta->tdls) { 3294 iwl_mvm_recalc_tdls_state(mvm, vif, false); 3295 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3296 NL80211_TDLS_DISABLE_LINK); 3297 } 3298 3299 if (unlikely(ret && 3300 test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 3301 &mvm->status))) 3302 ret = 0; 3303 } else { 3304 ret = -EIO; 3305 } 3306 out_unlock: 3307 mutex_unlock(&mvm->mutex); 3308 3309 if (sta->tdls && ret == 0) { 3310 if (old_state == IEEE80211_STA_NOTEXIST && 3311 new_state == IEEE80211_STA_NONE) 3312 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID); 3313 else if (old_state == IEEE80211_STA_NONE && 3314 new_state == IEEE80211_STA_NOTEXIST) 3315 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID); 3316 } 3317 3318 return ret; 3319 } 3320 3321 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 3322 { 3323 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3324 3325 mvm->rts_threshold = value; 3326 3327 return 0; 3328 } 3329 3330 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw, 3331 struct ieee80211_vif *vif, 3332 struct ieee80211_sta *sta, u32 changed) 3333 { 3334 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3335 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3336 3337 if (changed & (IEEE80211_RC_BW_CHANGED | 3338 IEEE80211_RC_SUPP_RATES_CHANGED | 3339 IEEE80211_RC_NSS_CHANGED)) 3340 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3341 true); 3342 3343 if (vif->type == NL80211_IFTYPE_STATION && 3344 changed & IEEE80211_RC_NSS_CHANGED) 3345 iwl_mvm_sf_update(mvm, vif, false); 3346 } 3347 3348 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw, 3349 struct ieee80211_vif *vif, u16 ac, 3350 const struct ieee80211_tx_queue_params *params) 3351 { 3352 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3353 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3354 3355 mvmvif->queue_params[ac] = *params; 3356 3357 /* 3358 * No need to update right away, we'll get BSS_CHANGED_QOS 3359 * The exception is P2P_DEVICE interface which needs immediate update. 3360 */ 3361 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 3362 int ret; 3363 3364 mutex_lock(&mvm->mutex); 3365 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3366 mutex_unlock(&mvm->mutex); 3367 return ret; 3368 } 3369 return 0; 3370 } 3371 3372 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, 3373 struct ieee80211_vif *vif, 3374 struct ieee80211_prep_tx_info *info) 3375 { 3376 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3377 3378 mutex_lock(&mvm->mutex); 3379 iwl_mvm_protect_assoc(mvm, vif, info->duration); 3380 mutex_unlock(&mvm->mutex); 3381 } 3382 3383 static void iwl_mvm_mac_mgd_complete_tx(struct ieee80211_hw *hw, 3384 struct ieee80211_vif *vif, 3385 struct ieee80211_prep_tx_info *info) 3386 { 3387 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3388 3389 /* for successful cases (auth/assoc), don't cancel session protection */ 3390 if (info->success) 3391 return; 3392 3393 mutex_lock(&mvm->mutex); 3394 iwl_mvm_stop_session_protection(mvm, vif); 3395 mutex_unlock(&mvm->mutex); 3396 } 3397 3398 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw, 3399 struct ieee80211_vif *vif, 3400 struct cfg80211_sched_scan_request *req, 3401 struct ieee80211_scan_ies *ies) 3402 { 3403 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3404 3405 int ret; 3406 3407 mutex_lock(&mvm->mutex); 3408 3409 if (!vif->bss_conf.idle) { 3410 ret = -EBUSY; 3411 goto out; 3412 } 3413 3414 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED); 3415 3416 out: 3417 mutex_unlock(&mvm->mutex); 3418 return ret; 3419 } 3420 3421 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw, 3422 struct ieee80211_vif *vif) 3423 { 3424 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3425 int ret; 3426 3427 mutex_lock(&mvm->mutex); 3428 3429 /* Due to a race condition, it's possible that mac80211 asks 3430 * us to stop a sched_scan when it's already stopped. This 3431 * can happen, for instance, if we stopped the scan ourselves, 3432 * called ieee80211_sched_scan_stopped() and the userspace called 3433 * stop sched scan scan before ieee80211_sched_scan_stopped_work() 3434 * could run. To handle this, simply return if the scan is 3435 * not running. 3436 */ 3437 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) { 3438 mutex_unlock(&mvm->mutex); 3439 return 0; 3440 } 3441 3442 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false); 3443 mutex_unlock(&mvm->mutex); 3444 iwl_mvm_wait_for_async_handlers(mvm); 3445 3446 return ret; 3447 } 3448 3449 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 3450 enum set_key_cmd cmd, 3451 struct ieee80211_vif *vif, 3452 struct ieee80211_sta *sta, 3453 struct ieee80211_key_conf *key) 3454 { 3455 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3456 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3457 struct iwl_mvm_sta *mvmsta; 3458 struct iwl_mvm_key_pn *ptk_pn; 3459 int keyidx = key->keyidx; 3460 int ret, i; 3461 u8 key_offset; 3462 3463 switch (key->cipher) { 3464 case WLAN_CIPHER_SUITE_TKIP: 3465 if (!mvm->trans->trans_cfg->gen2) { 3466 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; 3467 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3468 } else if (vif->type == NL80211_IFTYPE_STATION) { 3469 key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE; 3470 } else { 3471 IWL_DEBUG_MAC80211(mvm, "Use SW encryption for TKIP\n"); 3472 return -EOPNOTSUPP; 3473 } 3474 break; 3475 case WLAN_CIPHER_SUITE_CCMP: 3476 case WLAN_CIPHER_SUITE_GCMP: 3477 case WLAN_CIPHER_SUITE_GCMP_256: 3478 if (!iwl_mvm_has_new_tx_api(mvm)) 3479 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3480 break; 3481 case WLAN_CIPHER_SUITE_AES_CMAC: 3482 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3483 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3484 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE)); 3485 break; 3486 case WLAN_CIPHER_SUITE_WEP40: 3487 case WLAN_CIPHER_SUITE_WEP104: 3488 if (vif->type == NL80211_IFTYPE_STATION) 3489 break; 3490 if (iwl_mvm_has_new_tx_api(mvm)) 3491 return -EOPNOTSUPP; 3492 /* support HW crypto on TX */ 3493 return 0; 3494 default: 3495 /* currently FW supports only one optional cipher scheme */ 3496 if (hw->n_cipher_schemes && 3497 hw->cipher_schemes->cipher == key->cipher) 3498 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3499 else 3500 return -EOPNOTSUPP; 3501 } 3502 3503 switch (cmd) { 3504 case SET_KEY: 3505 if (keyidx == 6 || keyidx == 7) 3506 rcu_assign_pointer(mvmvif->bcn_prot.keys[keyidx - 6], 3507 key); 3508 3509 if ((vif->type == NL80211_IFTYPE_ADHOC || 3510 vif->type == NL80211_IFTYPE_AP) && !sta) { 3511 /* 3512 * GTK on AP interface is a TX-only key, return 0; 3513 * on IBSS they're per-station and because we're lazy 3514 * we don't support them for RX, so do the same. 3515 * CMAC/GMAC in AP/IBSS modes must be done in software. 3516 */ 3517 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3518 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3519 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3520 ret = -EOPNOTSUPP; 3521 break; 3522 } 3523 3524 if (key->cipher != WLAN_CIPHER_SUITE_GCMP && 3525 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 && 3526 !iwl_mvm_has_new_tx_api(mvm)) { 3527 key->hw_key_idx = STA_KEY_IDX_INVALID; 3528 ret = 0; 3529 break; 3530 } 3531 3532 if (!mvmvif->ap_ibss_active) { 3533 for (i = 0; 3534 i < ARRAY_SIZE(mvmvif->ap_early_keys); 3535 i++) { 3536 if (!mvmvif->ap_early_keys[i]) { 3537 mvmvif->ap_early_keys[i] = key; 3538 break; 3539 } 3540 } 3541 3542 if (i >= ARRAY_SIZE(mvmvif->ap_early_keys)) 3543 ret = -ENOSPC; 3544 else 3545 ret = 0; 3546 3547 break; 3548 } 3549 } 3550 3551 /* During FW restart, in order to restore the state as it was, 3552 * don't try to reprogram keys we previously failed for. 3553 */ 3554 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3555 key->hw_key_idx == STA_KEY_IDX_INVALID) { 3556 IWL_DEBUG_MAC80211(mvm, 3557 "skip invalid idx key programming during restart\n"); 3558 ret = 0; 3559 break; 3560 } 3561 3562 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3563 sta && iwl_mvm_has_new_rx_api(mvm) && 3564 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3565 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3566 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3567 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3568 struct ieee80211_key_seq seq; 3569 int tid, q; 3570 3571 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3572 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx])); 3573 ptk_pn = kzalloc(struct_size(ptk_pn, q, 3574 mvm->trans->num_rx_queues), 3575 GFP_KERNEL); 3576 if (!ptk_pn) { 3577 ret = -ENOMEM; 3578 break; 3579 } 3580 3581 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 3582 ieee80211_get_key_rx_seq(key, tid, &seq); 3583 for (q = 0; q < mvm->trans->num_rx_queues; q++) 3584 memcpy(ptk_pn->q[q].pn[tid], 3585 seq.ccmp.pn, 3586 IEEE80211_CCMP_PN_LEN); 3587 } 3588 3589 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn); 3590 } 3591 3592 /* in HW restart reuse the index, otherwise request a new one */ 3593 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 3594 key_offset = key->hw_key_idx; 3595 else 3596 key_offset = STA_KEY_IDX_INVALID; 3597 3598 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); 3599 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset); 3600 if (ret) { 3601 IWL_WARN(mvm, "set key failed\n"); 3602 key->hw_key_idx = STA_KEY_IDX_INVALID; 3603 /* 3604 * can't add key for RX, but we don't need it 3605 * in the device for TX so still return 0, 3606 * unless we have new TX API where we cannot 3607 * put key material into the TX_CMD 3608 */ 3609 if (iwl_mvm_has_new_tx_api(mvm)) 3610 ret = -EOPNOTSUPP; 3611 else 3612 ret = 0; 3613 } 3614 3615 break; 3616 case DISABLE_KEY: 3617 if (keyidx == 6 || keyidx == 7) 3618 RCU_INIT_POINTER(mvmvif->bcn_prot.keys[keyidx - 6], 3619 NULL); 3620 3621 ret = -ENOENT; 3622 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) { 3623 if (mvmvif->ap_early_keys[i] == key) { 3624 mvmvif->ap_early_keys[i] = NULL; 3625 ret = 0; 3626 } 3627 } 3628 3629 /* found in pending list - don't do anything else */ 3630 if (ret == 0) 3631 break; 3632 3633 if (key->hw_key_idx == STA_KEY_IDX_INVALID) { 3634 ret = 0; 3635 break; 3636 } 3637 3638 if (sta && iwl_mvm_has_new_rx_api(mvm) && 3639 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3640 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3641 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3642 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3643 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3644 ptk_pn = rcu_dereference_protected( 3645 mvmsta->ptk_pn[keyidx], 3646 lockdep_is_held(&mvm->mutex)); 3647 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL); 3648 if (ptk_pn) 3649 kfree_rcu(ptk_pn, rcu_head); 3650 } 3651 3652 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n"); 3653 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key); 3654 break; 3655 default: 3656 ret = -EINVAL; 3657 } 3658 3659 return ret; 3660 } 3661 3662 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 3663 enum set_key_cmd cmd, 3664 struct ieee80211_vif *vif, 3665 struct ieee80211_sta *sta, 3666 struct ieee80211_key_conf *key) 3667 { 3668 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3669 int ret; 3670 3671 mutex_lock(&mvm->mutex); 3672 ret = __iwl_mvm_mac_set_key(hw, cmd, vif, sta, key); 3673 mutex_unlock(&mvm->mutex); 3674 3675 return ret; 3676 } 3677 3678 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, 3679 struct ieee80211_vif *vif, 3680 struct ieee80211_key_conf *keyconf, 3681 struct ieee80211_sta *sta, 3682 u32 iv32, u16 *phase1key) 3683 { 3684 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3685 3686 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID) 3687 return; 3688 3689 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key); 3690 } 3691 3692 3693 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait, 3694 struct iwl_rx_packet *pkt, void *data) 3695 { 3696 struct iwl_mvm *mvm = 3697 container_of(notif_wait, struct iwl_mvm, notif_wait); 3698 struct iwl_hs20_roc_res *resp; 3699 int resp_len = iwl_rx_packet_payload_len(pkt); 3700 struct iwl_mvm_time_event_data *te_data = data; 3701 3702 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD)) 3703 return true; 3704 3705 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 3706 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n"); 3707 return true; 3708 } 3709 3710 resp = (void *)pkt->data; 3711 3712 IWL_DEBUG_TE(mvm, 3713 "Aux ROC: Received response from ucode: status=%d uid=%d\n", 3714 resp->status, resp->event_unique_id); 3715 3716 te_data->uid = le32_to_cpu(resp->event_unique_id); 3717 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n", 3718 te_data->uid); 3719 3720 spin_lock_bh(&mvm->time_event_lock); 3721 list_add_tail(&te_data->list, &mvm->aux_roc_te_list); 3722 spin_unlock_bh(&mvm->time_event_lock); 3723 3724 return true; 3725 } 3726 3727 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100) 3728 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200) 3729 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600) 3730 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20) 3731 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10) 3732 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm, 3733 struct ieee80211_channel *channel, 3734 struct ieee80211_vif *vif, 3735 int duration) 3736 { 3737 int res; 3738 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3739 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data; 3740 static const u16 time_event_response[] = { HOT_SPOT_CMD }; 3741 struct iwl_notification_wait wait_time_event; 3742 u32 dtim_interval = vif->bss_conf.dtim_period * 3743 vif->bss_conf.beacon_int; 3744 u32 req_dur, delay; 3745 struct iwl_hs20_roc_req aux_roc_req = { 3746 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 3747 .id_and_color = 3748 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)), 3749 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id), 3750 }; 3751 struct iwl_hs20_roc_req_tail *tail = iwl_mvm_chan_info_cmd_tail(mvm, 3752 &aux_roc_req.channel_info); 3753 u16 len = sizeof(aux_roc_req) - iwl_mvm_chan_info_padding(mvm); 3754 3755 /* Set the channel info data */ 3756 iwl_mvm_set_chan_info(mvm, &aux_roc_req.channel_info, channel->hw_value, 3757 iwl_mvm_phy_band_from_nl80211(channel->band), 3758 PHY_VHT_CHANNEL_MODE20, 3759 0); 3760 3761 /* Set the time and duration */ 3762 tail->apply_time = cpu_to_le32(iwl_mvm_get_systime(mvm)); 3763 3764 delay = AUX_ROC_MIN_DELAY; 3765 req_dur = MSEC_TO_TU(duration); 3766 3767 /* 3768 * If we are associated we want the delay time to be at least one 3769 * dtim interval so that the FW can wait until after the DTIM and 3770 * then start the time event, this will potentially allow us to 3771 * remain off-channel for the max duration. 3772 * Since we want to use almost a whole dtim interval we would also 3773 * like the delay to be for 2-3 dtim intervals, in case there are 3774 * other time events with higher priority. 3775 */ 3776 if (vif->bss_conf.assoc) { 3777 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY); 3778 /* We cannot remain off-channel longer than the DTIM interval */ 3779 if (dtim_interval <= req_dur) { 3780 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER; 3781 if (req_dur <= AUX_ROC_MIN_DURATION) 3782 req_dur = dtim_interval - 3783 AUX_ROC_MIN_SAFETY_BUFFER; 3784 } 3785 } 3786 3787 tail->duration = cpu_to_le32(req_dur); 3788 tail->apply_time_max_delay = cpu_to_le32(delay); 3789 3790 IWL_DEBUG_TE(mvm, 3791 "ROC: Requesting to remain on channel %u for %ums\n", 3792 channel->hw_value, req_dur); 3793 IWL_DEBUG_TE(mvm, 3794 "\t(requested = %ums, max_delay = %ums, dtim_interval = %ums)\n", 3795 duration, delay, dtim_interval); 3796 3797 /* Set the node address */ 3798 memcpy(tail->node_addr, vif->addr, ETH_ALEN); 3799 3800 lockdep_assert_held(&mvm->mutex); 3801 3802 spin_lock_bh(&mvm->time_event_lock); 3803 3804 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) { 3805 spin_unlock_bh(&mvm->time_event_lock); 3806 return -EIO; 3807 } 3808 3809 te_data->vif = vif; 3810 te_data->duration = duration; 3811 te_data->id = HOT_SPOT_CMD; 3812 3813 spin_unlock_bh(&mvm->time_event_lock); 3814 3815 /* 3816 * Use a notification wait, which really just processes the 3817 * command response and doesn't wait for anything, in order 3818 * to be able to process the response and get the UID inside 3819 * the RX path. Using CMD_WANT_SKB doesn't work because it 3820 * stores the buffer and then wakes up this thread, by which 3821 * time another notification (that the time event started) 3822 * might already be processed unsuccessfully. 3823 */ 3824 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event, 3825 time_event_response, 3826 ARRAY_SIZE(time_event_response), 3827 iwl_mvm_rx_aux_roc, te_data); 3828 3829 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, len, 3830 &aux_roc_req); 3831 3832 if (res) { 3833 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res); 3834 iwl_remove_notification(&mvm->notif_wait, &wait_time_event); 3835 goto out_clear_te; 3836 } 3837 3838 /* No need to wait for anything, so just pass 1 (0 isn't valid) */ 3839 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1); 3840 /* should never fail */ 3841 WARN_ON_ONCE(res); 3842 3843 if (res) { 3844 out_clear_te: 3845 spin_lock_bh(&mvm->time_event_lock); 3846 iwl_mvm_te_clear_data(mvm, te_data); 3847 spin_unlock_bh(&mvm->time_event_lock); 3848 } 3849 3850 return res; 3851 } 3852 3853 static int iwl_mvm_roc(struct ieee80211_hw *hw, 3854 struct ieee80211_vif *vif, 3855 struct ieee80211_channel *channel, 3856 int duration, 3857 enum ieee80211_roc_type type) 3858 { 3859 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3860 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3861 struct cfg80211_chan_def chandef; 3862 struct iwl_mvm_phy_ctxt *phy_ctxt; 3863 bool band_change_removal; 3864 int ret, i; 3865 3866 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value, 3867 duration, type); 3868 3869 /* 3870 * Flush the done work, just in case it's still pending, so that 3871 * the work it does can complete and we can accept new frames. 3872 */ 3873 flush_work(&mvm->roc_done_wk); 3874 3875 mutex_lock(&mvm->mutex); 3876 3877 switch (vif->type) { 3878 case NL80211_IFTYPE_STATION: 3879 if (fw_has_capa(&mvm->fw->ucode_capa, 3880 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) { 3881 /* Use aux roc framework (HS20) */ 3882 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 3883 ADD_STA, 0) >= 12) { 3884 u32 lmac_id; 3885 3886 lmac_id = iwl_mvm_get_lmac_id(mvm->fw, 3887 channel->band); 3888 ret = iwl_mvm_add_aux_sta(mvm, lmac_id); 3889 if (WARN(ret, 3890 "Failed to allocate aux station")) 3891 goto out_unlock; 3892 } 3893 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel, 3894 vif, duration); 3895 goto out_unlock; 3896 } 3897 IWL_ERR(mvm, "hotspot not supported\n"); 3898 ret = -EINVAL; 3899 goto out_unlock; 3900 case NL80211_IFTYPE_P2P_DEVICE: 3901 /* handle below */ 3902 break; 3903 default: 3904 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type); 3905 ret = -EINVAL; 3906 goto out_unlock; 3907 } 3908 3909 for (i = 0; i < NUM_PHY_CTX; i++) { 3910 phy_ctxt = &mvm->phy_ctxts[i]; 3911 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt) 3912 continue; 3913 3914 if (phy_ctxt->ref && channel == phy_ctxt->channel) { 3915 /* 3916 * Unbind the P2P_DEVICE from the current PHY context, 3917 * and if the PHY context is not used remove it. 3918 */ 3919 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3920 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3921 goto out_unlock; 3922 3923 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3924 3925 /* Bind the P2P_DEVICE to the current PHY Context */ 3926 mvmvif->phy_ctxt = phy_ctxt; 3927 3928 ret = iwl_mvm_binding_add_vif(mvm, vif); 3929 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3930 goto out_unlock; 3931 3932 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3933 goto schedule_time_event; 3934 } 3935 } 3936 3937 /* Need to update the PHY context only if the ROC channel changed */ 3938 if (channel == mvmvif->phy_ctxt->channel) 3939 goto schedule_time_event; 3940 3941 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT); 3942 3943 /* 3944 * Check if the remain-on-channel is on a different band and that 3945 * requires context removal, see iwl_mvm_phy_ctxt_changed(). If 3946 * so, we'll need to release and then re-configure here, since we 3947 * must not remove a PHY context that's part of a binding. 3948 */ 3949 band_change_removal = 3950 fw_has_capa(&mvm->fw->ucode_capa, 3951 IWL_UCODE_TLV_CAPA_BINDING_CDB_SUPPORT) && 3952 mvmvif->phy_ctxt->channel->band != chandef.chan->band; 3953 3954 if (mvmvif->phy_ctxt->ref == 1 && !band_change_removal) { 3955 /* 3956 * Change the PHY context configuration as it is currently 3957 * referenced only by the P2P Device MAC (and we can modify it) 3958 */ 3959 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt, 3960 &chandef, 1, 1); 3961 if (ret) 3962 goto out_unlock; 3963 } else { 3964 /* 3965 * The PHY context is shared with other MACs (or we're trying to 3966 * switch bands), so remove the P2P Device from the binding, 3967 * allocate an new PHY context and create a new binding. 3968 */ 3969 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3970 if (!phy_ctxt) { 3971 ret = -ENOSPC; 3972 goto out_unlock; 3973 } 3974 3975 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef, 3976 1, 1); 3977 if (ret) { 3978 IWL_ERR(mvm, "Failed to change PHY context\n"); 3979 goto out_unlock; 3980 } 3981 3982 /* Unbind the P2P_DEVICE from the current PHY context */ 3983 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3984 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3985 goto out_unlock; 3986 3987 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3988 3989 /* Bind the P2P_DEVICE to the new allocated PHY context */ 3990 mvmvif->phy_ctxt = phy_ctxt; 3991 3992 ret = iwl_mvm_binding_add_vif(mvm, vif); 3993 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3994 goto out_unlock; 3995 3996 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3997 } 3998 3999 schedule_time_event: 4000 /* Schedule the time events */ 4001 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type); 4002 4003 out_unlock: 4004 mutex_unlock(&mvm->mutex); 4005 IWL_DEBUG_MAC80211(mvm, "leave\n"); 4006 return ret; 4007 } 4008 4009 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw, 4010 struct ieee80211_vif *vif) 4011 { 4012 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4013 4014 IWL_DEBUG_MAC80211(mvm, "enter\n"); 4015 4016 mutex_lock(&mvm->mutex); 4017 iwl_mvm_stop_roc(mvm, vif); 4018 mutex_unlock(&mvm->mutex); 4019 4020 IWL_DEBUG_MAC80211(mvm, "leave\n"); 4021 return 0; 4022 } 4023 4024 struct iwl_mvm_ftm_responder_iter_data { 4025 bool responder; 4026 struct ieee80211_chanctx_conf *ctx; 4027 }; 4028 4029 static void iwl_mvm_ftm_responder_chanctx_iter(void *_data, u8 *mac, 4030 struct ieee80211_vif *vif) 4031 { 4032 struct iwl_mvm_ftm_responder_iter_data *data = _data; 4033 4034 if (rcu_access_pointer(vif->chanctx_conf) == data->ctx && 4035 vif->type == NL80211_IFTYPE_AP && vif->bss_conf.ftmr_params) 4036 data->responder = true; 4037 } 4038 4039 static bool iwl_mvm_is_ftm_responder_chanctx(struct iwl_mvm *mvm, 4040 struct ieee80211_chanctx_conf *ctx) 4041 { 4042 struct iwl_mvm_ftm_responder_iter_data data = { 4043 .responder = false, 4044 .ctx = ctx, 4045 }; 4046 4047 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 4048 IEEE80211_IFACE_ITER_NORMAL, 4049 iwl_mvm_ftm_responder_chanctx_iter, 4050 &data); 4051 return data.responder; 4052 } 4053 4054 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm, 4055 struct ieee80211_chanctx_conf *ctx) 4056 { 4057 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4058 struct iwl_mvm_phy_ctxt *phy_ctxt; 4059 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx); 4060 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def; 4061 int ret; 4062 4063 lockdep_assert_held(&mvm->mutex); 4064 4065 IWL_DEBUG_MAC80211(mvm, "Add channel context\n"); 4066 4067 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 4068 if (!phy_ctxt) { 4069 ret = -ENOSPC; 4070 goto out; 4071 } 4072 4073 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def, 4074 ctx->rx_chains_static, 4075 ctx->rx_chains_dynamic); 4076 if (ret) { 4077 IWL_ERR(mvm, "Failed to add PHY context\n"); 4078 goto out; 4079 } 4080 4081 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt); 4082 *phy_ctxt_id = phy_ctxt->id; 4083 out: 4084 return ret; 4085 } 4086 4087 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw, 4088 struct ieee80211_chanctx_conf *ctx) 4089 { 4090 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4091 int ret; 4092 4093 mutex_lock(&mvm->mutex); 4094 ret = __iwl_mvm_add_chanctx(mvm, ctx); 4095 mutex_unlock(&mvm->mutex); 4096 4097 return ret; 4098 } 4099 4100 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm, 4101 struct ieee80211_chanctx_conf *ctx) 4102 { 4103 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4104 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 4105 4106 lockdep_assert_held(&mvm->mutex); 4107 4108 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt); 4109 } 4110 4111 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw, 4112 struct ieee80211_chanctx_conf *ctx) 4113 { 4114 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4115 4116 mutex_lock(&mvm->mutex); 4117 __iwl_mvm_remove_chanctx(mvm, ctx); 4118 mutex_unlock(&mvm->mutex); 4119 } 4120 4121 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw, 4122 struct ieee80211_chanctx_conf *ctx, 4123 u32 changed) 4124 { 4125 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4126 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4127 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 4128 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx); 4129 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def; 4130 4131 if (WARN_ONCE((phy_ctxt->ref > 1) && 4132 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH | 4133 IEEE80211_CHANCTX_CHANGE_RX_CHAINS | 4134 IEEE80211_CHANCTX_CHANGE_RADAR | 4135 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)), 4136 "Cannot change PHY. Ref=%d, changed=0x%X\n", 4137 phy_ctxt->ref, changed)) 4138 return; 4139 4140 mutex_lock(&mvm->mutex); 4141 4142 /* we are only changing the min_width, may be a noop */ 4143 if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) { 4144 if (phy_ctxt->width == def->width) 4145 goto out_unlock; 4146 4147 /* we are just toggling between 20_NOHT and 20 */ 4148 if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 && 4149 def->width <= NL80211_CHAN_WIDTH_20) 4150 goto out_unlock; 4151 } 4152 4153 iwl_mvm_bt_coex_vif_change(mvm); 4154 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def, 4155 ctx->rx_chains_static, 4156 ctx->rx_chains_dynamic); 4157 4158 out_unlock: 4159 mutex_unlock(&mvm->mutex); 4160 } 4161 4162 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm, 4163 struct ieee80211_vif *vif, 4164 struct ieee80211_chanctx_conf *ctx, 4165 bool switching_chanctx) 4166 { 4167 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4168 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 4169 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4170 int ret; 4171 4172 lockdep_assert_held(&mvm->mutex); 4173 4174 mvmvif->phy_ctxt = phy_ctxt; 4175 4176 switch (vif->type) { 4177 case NL80211_IFTYPE_AP: 4178 /* only needed if we're switching chanctx (i.e. during CSA) */ 4179 if (switching_chanctx) { 4180 mvmvif->ap_ibss_active = true; 4181 break; 4182 } 4183 fallthrough; 4184 case NL80211_IFTYPE_ADHOC: 4185 /* 4186 * The AP binding flow is handled as part of the start_ap flow 4187 * (in bss_info_changed), similarly for IBSS. 4188 */ 4189 ret = 0; 4190 goto out; 4191 case NL80211_IFTYPE_STATION: 4192 mvmvif->csa_bcn_pending = false; 4193 break; 4194 case NL80211_IFTYPE_MONITOR: 4195 /* always disable PS when a monitor interface is active */ 4196 mvmvif->ps_disabled = true; 4197 break; 4198 default: 4199 ret = -EINVAL; 4200 goto out; 4201 } 4202 4203 ret = iwl_mvm_binding_add_vif(mvm, vif); 4204 if (ret) 4205 goto out; 4206 4207 /* 4208 * Power state must be updated before quotas, 4209 * otherwise fw will complain. 4210 */ 4211 iwl_mvm_power_update_mac(mvm); 4212 4213 /* Setting the quota at this stage is only required for monitor 4214 * interfaces. For the other types, the bss_info changed flow 4215 * will handle quota settings. 4216 */ 4217 if (vif->type == NL80211_IFTYPE_MONITOR) { 4218 mvmvif->monitor_active = true; 4219 ret = iwl_mvm_update_quotas(mvm, false, NULL); 4220 if (ret) 4221 goto out_remove_binding; 4222 4223 ret = iwl_mvm_add_snif_sta(mvm, vif); 4224 if (ret) 4225 goto out_remove_binding; 4226 4227 } 4228 4229 /* Handle binding during CSA */ 4230 if (vif->type == NL80211_IFTYPE_AP) { 4231 iwl_mvm_update_quotas(mvm, false, NULL); 4232 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 4233 } 4234 4235 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) { 4236 mvmvif->csa_bcn_pending = true; 4237 4238 if (!fw_has_capa(&mvm->fw->ucode_capa, 4239 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { 4240 u32 duration = 3 * vif->bss_conf.beacon_int; 4241 4242 /* Protect the session to make sure we hear the first 4243 * beacon on the new channel. 4244 */ 4245 iwl_mvm_protect_session(mvm, vif, duration, duration, 4246 vif->bss_conf.beacon_int / 2, 4247 true); 4248 } 4249 4250 iwl_mvm_update_quotas(mvm, false, NULL); 4251 } 4252 4253 goto out; 4254 4255 out_remove_binding: 4256 iwl_mvm_binding_remove_vif(mvm, vif); 4257 iwl_mvm_power_update_mac(mvm); 4258 out: 4259 if (ret) 4260 mvmvif->phy_ctxt = NULL; 4261 return ret; 4262 } 4263 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw, 4264 struct ieee80211_vif *vif, 4265 struct ieee80211_chanctx_conf *ctx) 4266 { 4267 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4268 int ret; 4269 4270 mutex_lock(&mvm->mutex); 4271 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false); 4272 mutex_unlock(&mvm->mutex); 4273 4274 return ret; 4275 } 4276 4277 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm, 4278 struct ieee80211_vif *vif, 4279 struct ieee80211_chanctx_conf *ctx, 4280 bool switching_chanctx) 4281 { 4282 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4283 struct ieee80211_vif *disabled_vif = NULL; 4284 4285 lockdep_assert_held(&mvm->mutex); 4286 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); 4287 4288 switch (vif->type) { 4289 case NL80211_IFTYPE_ADHOC: 4290 goto out; 4291 case NL80211_IFTYPE_MONITOR: 4292 mvmvif->monitor_active = false; 4293 mvmvif->ps_disabled = false; 4294 iwl_mvm_rm_snif_sta(mvm, vif); 4295 break; 4296 case NL80211_IFTYPE_AP: 4297 /* This part is triggered only during CSA */ 4298 if (!switching_chanctx || !mvmvif->ap_ibss_active) 4299 goto out; 4300 4301 mvmvif->csa_countdown = false; 4302 4303 /* Set CS bit on all the stations */ 4304 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true); 4305 4306 /* Save blocked iface, the timeout is set on the next beacon */ 4307 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif); 4308 4309 mvmvif->ap_ibss_active = false; 4310 break; 4311 case NL80211_IFTYPE_STATION: 4312 if (!switching_chanctx) 4313 break; 4314 4315 disabled_vif = vif; 4316 4317 if (!fw_has_capa(&mvm->fw->ucode_capa, 4318 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) 4319 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL); 4320 break; 4321 default: 4322 break; 4323 } 4324 4325 iwl_mvm_update_quotas(mvm, false, disabled_vif); 4326 iwl_mvm_binding_remove_vif(mvm, vif); 4327 4328 out: 4329 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD) && 4330 switching_chanctx) 4331 return; 4332 mvmvif->phy_ctxt = NULL; 4333 iwl_mvm_power_update_mac(mvm); 4334 } 4335 4336 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, 4337 struct ieee80211_vif *vif, 4338 struct ieee80211_chanctx_conf *ctx) 4339 { 4340 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4341 4342 mutex_lock(&mvm->mutex); 4343 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false); 4344 mutex_unlock(&mvm->mutex); 4345 } 4346 4347 static int 4348 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm, 4349 struct ieee80211_vif_chanctx_switch *vifs) 4350 { 4351 int ret; 4352 4353 mutex_lock(&mvm->mutex); 4354 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 4355 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx); 4356 4357 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx); 4358 if (ret) { 4359 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n"); 4360 goto out_reassign; 4361 } 4362 4363 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 4364 true); 4365 if (ret) { 4366 IWL_ERR(mvm, 4367 "failed to assign new_ctx during channel switch\n"); 4368 goto out_remove; 4369 } 4370 4371 /* we don't support TDLS during DCM - can be caused by channel switch */ 4372 if (iwl_mvm_phy_ctx_count(mvm) > 1) 4373 iwl_mvm_teardown_tdls_peers(mvm); 4374 4375 goto out; 4376 4377 out_remove: 4378 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx); 4379 4380 out_reassign: 4381 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) { 4382 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n"); 4383 goto out_restart; 4384 } 4385 4386 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 4387 true)) { 4388 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 4389 goto out_restart; 4390 } 4391 4392 goto out; 4393 4394 out_restart: 4395 /* things keep failing, better restart the hw */ 4396 iwl_mvm_nic_restart(mvm, false); 4397 4398 out: 4399 mutex_unlock(&mvm->mutex); 4400 4401 return ret; 4402 } 4403 4404 static int 4405 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm, 4406 struct ieee80211_vif_chanctx_switch *vifs) 4407 { 4408 int ret; 4409 4410 mutex_lock(&mvm->mutex); 4411 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 4412 4413 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 4414 true); 4415 if (ret) { 4416 IWL_ERR(mvm, 4417 "failed to assign new_ctx during channel switch\n"); 4418 goto out_reassign; 4419 } 4420 4421 goto out; 4422 4423 out_reassign: 4424 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 4425 true)) { 4426 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 4427 goto out_restart; 4428 } 4429 4430 goto out; 4431 4432 out_restart: 4433 /* things keep failing, better restart the hw */ 4434 iwl_mvm_nic_restart(mvm, false); 4435 4436 out: 4437 mutex_unlock(&mvm->mutex); 4438 4439 return ret; 4440 } 4441 4442 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, 4443 struct ieee80211_vif_chanctx_switch *vifs, 4444 int n_vifs, 4445 enum ieee80211_chanctx_switch_mode mode) 4446 { 4447 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4448 int ret; 4449 4450 /* we only support a single-vif right now */ 4451 if (n_vifs > 1) 4452 return -EOPNOTSUPP; 4453 4454 switch (mode) { 4455 case CHANCTX_SWMODE_SWAP_CONTEXTS: 4456 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs); 4457 break; 4458 case CHANCTX_SWMODE_REASSIGN_VIF: 4459 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs); 4460 break; 4461 default: 4462 ret = -EOPNOTSUPP; 4463 break; 4464 } 4465 4466 return ret; 4467 } 4468 4469 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw) 4470 { 4471 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4472 4473 return mvm->ibss_manager; 4474 } 4475 4476 static int iwl_mvm_set_tim(struct ieee80211_hw *hw, 4477 struct ieee80211_sta *sta, 4478 bool set) 4479 { 4480 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4481 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4482 4483 if (!mvm_sta || !mvm_sta->vif) { 4484 IWL_ERR(mvm, "Station is not associated to a vif\n"); 4485 return -EINVAL; 4486 } 4487 4488 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif); 4489 } 4490 4491 #ifdef CONFIG_NL80211_TESTMODE 4492 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = { 4493 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 }, 4494 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 }, 4495 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 }, 4496 }; 4497 4498 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm, 4499 struct ieee80211_vif *vif, 4500 void *data, int len) 4501 { 4502 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1]; 4503 int err; 4504 u32 noa_duration; 4505 4506 err = nla_parse_deprecated(tb, IWL_MVM_TM_ATTR_MAX, data, len, 4507 iwl_mvm_tm_policy, NULL); 4508 if (err) 4509 return err; 4510 4511 if (!tb[IWL_MVM_TM_ATTR_CMD]) 4512 return -EINVAL; 4513 4514 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) { 4515 case IWL_MVM_TM_CMD_SET_NOA: 4516 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p || 4517 !vif->bss_conf.enable_beacon || 4518 !tb[IWL_MVM_TM_ATTR_NOA_DURATION]) 4519 return -EINVAL; 4520 4521 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]); 4522 if (noa_duration >= vif->bss_conf.beacon_int) 4523 return -EINVAL; 4524 4525 mvm->noa_duration = noa_duration; 4526 mvm->noa_vif = vif; 4527 4528 return iwl_mvm_update_quotas(mvm, true, NULL); 4529 case IWL_MVM_TM_CMD_SET_BEACON_FILTER: 4530 /* must be associated client vif - ignore authorized */ 4531 if (!vif || vif->type != NL80211_IFTYPE_STATION || 4532 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period || 4533 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]) 4534 return -EINVAL; 4535 4536 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])) 4537 return iwl_mvm_enable_beacon_filter(mvm, vif, 0); 4538 return iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4539 } 4540 4541 return -EOPNOTSUPP; 4542 } 4543 4544 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw, 4545 struct ieee80211_vif *vif, 4546 void *data, int len) 4547 { 4548 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4549 int err; 4550 4551 mutex_lock(&mvm->mutex); 4552 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len); 4553 mutex_unlock(&mvm->mutex); 4554 4555 return err; 4556 } 4557 #endif 4558 4559 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw, 4560 struct ieee80211_vif *vif, 4561 struct ieee80211_channel_switch *chsw) 4562 { 4563 /* By implementing this operation, we prevent mac80211 from 4564 * starting its own channel switch timer, so that we can call 4565 * ieee80211_chswitch_done() ourselves at the right time 4566 * (which is when the absence time event starts). 4567 */ 4568 4569 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw), 4570 "dummy channel switch op\n"); 4571 } 4572 4573 static int iwl_mvm_schedule_client_csa(struct iwl_mvm *mvm, 4574 struct ieee80211_vif *vif, 4575 struct ieee80211_channel_switch *chsw) 4576 { 4577 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4578 struct iwl_chan_switch_te_cmd cmd = { 4579 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 4580 mvmvif->color)), 4581 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 4582 .tsf = cpu_to_le32(chsw->timestamp), 4583 .cs_count = chsw->count, 4584 .cs_mode = chsw->block_tx, 4585 }; 4586 4587 lockdep_assert_held(&mvm->mutex); 4588 4589 if (chsw->delay) 4590 cmd.cs_delayed_bcn_count = 4591 DIV_ROUND_UP(chsw->delay, vif->bss_conf.beacon_int); 4592 4593 return iwl_mvm_send_cmd_pdu(mvm, 4594 WIDE_ID(MAC_CONF_GROUP, 4595 CHANNEL_SWITCH_TIME_EVENT_CMD), 4596 0, sizeof(cmd), &cmd); 4597 } 4598 4599 static int iwl_mvm_old_pre_chan_sw_sta(struct iwl_mvm *mvm, 4600 struct ieee80211_vif *vif, 4601 struct ieee80211_channel_switch *chsw) 4602 { 4603 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4604 u32 apply_time; 4605 4606 /* Schedule the time event to a bit before beacon 1, 4607 * to make sure we're in the new channel when the 4608 * GO/AP arrives. In case count <= 1 immediately schedule the 4609 * TE (this might result with some packet loss or connection 4610 * loss). 4611 */ 4612 if (chsw->count <= 1) 4613 apply_time = 0; 4614 else 4615 apply_time = chsw->device_timestamp + 4616 ((vif->bss_conf.beacon_int * (chsw->count - 1) - 4617 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024); 4618 4619 if (chsw->block_tx) 4620 iwl_mvm_csa_client_absent(mvm, vif); 4621 4622 if (mvmvif->bf_data.bf_enabled) { 4623 int ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4624 4625 if (ret) 4626 return ret; 4627 } 4628 4629 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int, 4630 apply_time); 4631 4632 return 0; 4633 } 4634 4635 #define IWL_MAX_CSA_BLOCK_TX 1500 4636 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, 4637 struct ieee80211_vif *vif, 4638 struct ieee80211_channel_switch *chsw) 4639 { 4640 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4641 struct ieee80211_vif *csa_vif; 4642 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4643 int ret; 4644 4645 mutex_lock(&mvm->mutex); 4646 4647 mvmvif->csa_failed = false; 4648 4649 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n", 4650 chsw->chandef.center_freq1); 4651 4652 iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt, 4653 ieee80211_vif_to_wdev(vif), 4654 FW_DBG_TRIGGER_CHANNEL_SWITCH); 4655 4656 switch (vif->type) { 4657 case NL80211_IFTYPE_AP: 4658 csa_vif = 4659 rcu_dereference_protected(mvm->csa_vif, 4660 lockdep_is_held(&mvm->mutex)); 4661 if (WARN_ONCE(csa_vif && csa_vif->csa_active, 4662 "Another CSA is already in progress")) { 4663 ret = -EBUSY; 4664 goto out_unlock; 4665 } 4666 4667 /* we still didn't unblock tx. prevent new CS meanwhile */ 4668 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif, 4669 lockdep_is_held(&mvm->mutex))) { 4670 ret = -EBUSY; 4671 goto out_unlock; 4672 } 4673 4674 rcu_assign_pointer(mvm->csa_vif, vif); 4675 4676 if (WARN_ONCE(mvmvif->csa_countdown, 4677 "Previous CSA countdown didn't complete")) { 4678 ret = -EBUSY; 4679 goto out_unlock; 4680 } 4681 4682 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq; 4683 4684 break; 4685 case NL80211_IFTYPE_STATION: 4686 /* 4687 * We haven't configured the firmware to be associated yet since 4688 * we don't know the dtim period. In this case, the firmware can't 4689 * track the beacons. 4690 */ 4691 if (!vif->bss_conf.assoc || !vif->bss_conf.dtim_period) { 4692 ret = -EBUSY; 4693 goto out_unlock; 4694 } 4695 4696 if (chsw->delay > IWL_MAX_CSA_BLOCK_TX) 4697 schedule_delayed_work(&mvmvif->csa_work, 0); 4698 4699 if (chsw->block_tx) { 4700 /* 4701 * In case of undetermined / long time with immediate 4702 * quiet monitor status to gracefully disconnect 4703 */ 4704 if (!chsw->count || 4705 chsw->count * vif->bss_conf.beacon_int > 4706 IWL_MAX_CSA_BLOCK_TX) 4707 schedule_delayed_work(&mvmvif->csa_work, 4708 msecs_to_jiffies(IWL_MAX_CSA_BLOCK_TX)); 4709 } 4710 4711 if (!fw_has_capa(&mvm->fw->ucode_capa, 4712 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { 4713 ret = iwl_mvm_old_pre_chan_sw_sta(mvm, vif, chsw); 4714 if (ret) 4715 goto out_unlock; 4716 } else { 4717 iwl_mvm_schedule_client_csa(mvm, vif, chsw); 4718 } 4719 4720 mvmvif->csa_count = chsw->count; 4721 mvmvif->csa_misbehave = false; 4722 break; 4723 default: 4724 break; 4725 } 4726 4727 mvmvif->ps_disabled = true; 4728 4729 ret = iwl_mvm_power_update_ps(mvm); 4730 if (ret) 4731 goto out_unlock; 4732 4733 /* we won't be on this channel any longer */ 4734 iwl_mvm_teardown_tdls_peers(mvm); 4735 4736 out_unlock: 4737 mutex_unlock(&mvm->mutex); 4738 4739 return ret; 4740 } 4741 4742 static void iwl_mvm_channel_switch_rx_beacon(struct ieee80211_hw *hw, 4743 struct ieee80211_vif *vif, 4744 struct ieee80211_channel_switch *chsw) 4745 { 4746 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4747 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4748 struct iwl_chan_switch_te_cmd cmd = { 4749 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 4750 mvmvif->color)), 4751 .action = cpu_to_le32(FW_CTXT_ACTION_MODIFY), 4752 .tsf = cpu_to_le32(chsw->timestamp), 4753 .cs_count = chsw->count, 4754 .cs_mode = chsw->block_tx, 4755 }; 4756 4757 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CS_MODIFY)) 4758 return; 4759 4760 IWL_DEBUG_MAC80211(mvm, "Modify CSA on mac %d count = %d (old %d) mode = %d\n", 4761 mvmvif->id, chsw->count, mvmvif->csa_count, chsw->block_tx); 4762 4763 if (chsw->count >= mvmvif->csa_count && chsw->block_tx) { 4764 if (mvmvif->csa_misbehave) { 4765 /* Second time, give up on this AP*/ 4766 iwl_mvm_abort_channel_switch(hw, vif); 4767 ieee80211_chswitch_done(vif, false); 4768 mvmvif->csa_misbehave = false; 4769 return; 4770 } 4771 mvmvif->csa_misbehave = true; 4772 } 4773 mvmvif->csa_count = chsw->count; 4774 4775 mutex_lock(&mvm->mutex); 4776 if (mvmvif->csa_failed) 4777 goto out_unlock; 4778 4779 WARN_ON(iwl_mvm_send_cmd_pdu(mvm, 4780 WIDE_ID(MAC_CONF_GROUP, 4781 CHANNEL_SWITCH_TIME_EVENT_CMD), 4782 0, sizeof(cmd), &cmd)); 4783 out_unlock: 4784 mutex_unlock(&mvm->mutex); 4785 } 4786 4787 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop) 4788 { 4789 int i; 4790 4791 if (!iwl_mvm_has_new_tx_api(mvm)) { 4792 if (drop) { 4793 mutex_lock(&mvm->mutex); 4794 iwl_mvm_flush_tx_path(mvm, 4795 iwl_mvm_flushable_queues(mvm) & queues); 4796 mutex_unlock(&mvm->mutex); 4797 } else { 4798 iwl_trans_wait_tx_queues_empty(mvm->trans, queues); 4799 } 4800 return; 4801 } 4802 4803 mutex_lock(&mvm->mutex); 4804 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 4805 struct ieee80211_sta *sta; 4806 4807 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4808 lockdep_is_held(&mvm->mutex)); 4809 if (IS_ERR_OR_NULL(sta)) 4810 continue; 4811 4812 if (drop) 4813 iwl_mvm_flush_sta_tids(mvm, i, 0xFFFF); 4814 else 4815 iwl_mvm_wait_sta_queues_empty(mvm, 4816 iwl_mvm_sta_from_mac80211(sta)); 4817 } 4818 mutex_unlock(&mvm->mutex); 4819 } 4820 4821 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw, 4822 struct ieee80211_vif *vif, u32 queues, bool drop) 4823 { 4824 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4825 struct iwl_mvm_vif *mvmvif; 4826 struct iwl_mvm_sta *mvmsta; 4827 struct ieee80211_sta *sta; 4828 int i; 4829 u32 msk = 0; 4830 4831 if (!vif) { 4832 iwl_mvm_flush_no_vif(mvm, queues, drop); 4833 return; 4834 } 4835 4836 if (vif->type != NL80211_IFTYPE_STATION) 4837 return; 4838 4839 /* Make sure we're done with the deferred traffic before flushing */ 4840 flush_work(&mvm->add_stream_wk); 4841 4842 mutex_lock(&mvm->mutex); 4843 mvmvif = iwl_mvm_vif_from_mac80211(vif); 4844 4845 /* flush the AP-station and all TDLS peers */ 4846 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 4847 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4848 lockdep_is_held(&mvm->mutex)); 4849 if (IS_ERR_OR_NULL(sta)) 4850 continue; 4851 4852 mvmsta = iwl_mvm_sta_from_mac80211(sta); 4853 if (mvmsta->vif != vif) 4854 continue; 4855 4856 /* make sure only TDLS peers or the AP are flushed */ 4857 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls); 4858 4859 if (drop) { 4860 if (iwl_mvm_flush_sta(mvm, mvmsta, false)) 4861 IWL_ERR(mvm, "flush request fail\n"); 4862 } else { 4863 msk |= mvmsta->tfd_queue_msk; 4864 if (iwl_mvm_has_new_tx_api(mvm)) 4865 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta); 4866 } 4867 } 4868 4869 mutex_unlock(&mvm->mutex); 4870 4871 /* this can take a while, and we may need/want other operations 4872 * to succeed while doing this, so do it without the mutex held 4873 */ 4874 if (!drop && !iwl_mvm_has_new_tx_api(mvm)) 4875 iwl_trans_wait_tx_queues_empty(mvm->trans, msk); 4876 } 4877 4878 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx, 4879 struct survey_info *survey) 4880 { 4881 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4882 int ret; 4883 4884 memset(survey, 0, sizeof(*survey)); 4885 4886 /* only support global statistics right now */ 4887 if (idx != 0) 4888 return -ENOENT; 4889 4890 if (!fw_has_capa(&mvm->fw->ucode_capa, 4891 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4892 return -ENOENT; 4893 4894 mutex_lock(&mvm->mutex); 4895 4896 if (iwl_mvm_firmware_running(mvm)) { 4897 ret = iwl_mvm_request_statistics(mvm, false); 4898 if (ret) 4899 goto out; 4900 } 4901 4902 survey->filled = SURVEY_INFO_TIME | 4903 SURVEY_INFO_TIME_RX | 4904 SURVEY_INFO_TIME_TX | 4905 SURVEY_INFO_TIME_SCAN; 4906 survey->time = mvm->accu_radio_stats.on_time_rf + 4907 mvm->radio_stats.on_time_rf; 4908 do_div(survey->time, USEC_PER_MSEC); 4909 4910 survey->time_rx = mvm->accu_radio_stats.rx_time + 4911 mvm->radio_stats.rx_time; 4912 do_div(survey->time_rx, USEC_PER_MSEC); 4913 4914 survey->time_tx = mvm->accu_radio_stats.tx_time + 4915 mvm->radio_stats.tx_time; 4916 do_div(survey->time_tx, USEC_PER_MSEC); 4917 4918 survey->time_scan = mvm->accu_radio_stats.on_time_scan + 4919 mvm->radio_stats.on_time_scan; 4920 do_div(survey->time_scan, USEC_PER_MSEC); 4921 4922 ret = 0; 4923 out: 4924 mutex_unlock(&mvm->mutex); 4925 return ret; 4926 } 4927 4928 static void iwl_mvm_set_sta_rate(u32 rate_n_flags, struct rate_info *rinfo) 4929 { 4930 u32 format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK; 4931 4932 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { 4933 case RATE_MCS_CHAN_WIDTH_20: 4934 rinfo->bw = RATE_INFO_BW_20; 4935 break; 4936 case RATE_MCS_CHAN_WIDTH_40: 4937 rinfo->bw = RATE_INFO_BW_40; 4938 break; 4939 case RATE_MCS_CHAN_WIDTH_80: 4940 rinfo->bw = RATE_INFO_BW_80; 4941 break; 4942 case RATE_MCS_CHAN_WIDTH_160: 4943 rinfo->bw = RATE_INFO_BW_160; 4944 break; 4945 } 4946 4947 if (format == RATE_MCS_CCK_MSK || 4948 format == RATE_MCS_LEGACY_OFDM_MSK) { 4949 int rate = u32_get_bits(rate_n_flags, RATE_LEGACY_RATE_MSK); 4950 4951 /* add the offset needed to get to the legacy ofdm indices */ 4952 if (format == RATE_MCS_LEGACY_OFDM_MSK) 4953 rate += IWL_FIRST_OFDM_RATE; 4954 4955 switch (rate) { 4956 case IWL_RATE_1M_INDEX: 4957 rinfo->legacy = 10; 4958 break; 4959 case IWL_RATE_2M_INDEX: 4960 rinfo->legacy = 20; 4961 break; 4962 case IWL_RATE_5M_INDEX: 4963 rinfo->legacy = 55; 4964 break; 4965 case IWL_RATE_11M_INDEX: 4966 rinfo->legacy = 110; 4967 break; 4968 case IWL_RATE_6M_INDEX: 4969 rinfo->legacy = 60; 4970 break; 4971 case IWL_RATE_9M_INDEX: 4972 rinfo->legacy = 90; 4973 break; 4974 case IWL_RATE_12M_INDEX: 4975 rinfo->legacy = 120; 4976 break; 4977 case IWL_RATE_18M_INDEX: 4978 rinfo->legacy = 180; 4979 break; 4980 case IWL_RATE_24M_INDEX: 4981 rinfo->legacy = 240; 4982 break; 4983 case IWL_RATE_36M_INDEX: 4984 rinfo->legacy = 360; 4985 break; 4986 case IWL_RATE_48M_INDEX: 4987 rinfo->legacy = 480; 4988 break; 4989 case IWL_RATE_54M_INDEX: 4990 rinfo->legacy = 540; 4991 } 4992 return; 4993 } 4994 4995 rinfo->nss = u32_get_bits(rate_n_flags, 4996 RATE_MCS_NSS_MSK) + 1; 4997 rinfo->mcs = format == RATE_MCS_HT_MSK ? 4998 RATE_HT_MCS_INDEX(rate_n_flags) : 4999 u32_get_bits(rate_n_flags, RATE_MCS_CODE_MSK); 5000 5001 if (format == RATE_MCS_HE_MSK) { 5002 u32 gi_ltf = u32_get_bits(rate_n_flags, 5003 RATE_MCS_HE_GI_LTF_MSK); 5004 5005 rinfo->flags |= RATE_INFO_FLAGS_HE_MCS; 5006 5007 if (rate_n_flags & RATE_MCS_HE_106T_MSK) { 5008 rinfo->bw = RATE_INFO_BW_HE_RU; 5009 rinfo->he_ru_alloc = NL80211_RATE_INFO_HE_RU_ALLOC_106; 5010 } 5011 5012 switch (rate_n_flags & RATE_MCS_HE_TYPE_MSK) { 5013 case RATE_MCS_HE_TYPE_SU: 5014 case RATE_MCS_HE_TYPE_EXT_SU: 5015 if (gi_ltf == 0 || gi_ltf == 1) 5016 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; 5017 else if (gi_ltf == 2) 5018 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; 5019 else if (gi_ltf == 3) 5020 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; 5021 else 5022 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; 5023 break; 5024 case RATE_MCS_HE_TYPE_MU: 5025 if (gi_ltf == 0 || gi_ltf == 1) 5026 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; 5027 else if (gi_ltf == 2) 5028 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; 5029 else 5030 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; 5031 break; 5032 case RATE_MCS_HE_TYPE_TRIG: 5033 if (gi_ltf == 0 || gi_ltf == 1) 5034 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; 5035 else 5036 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; 5037 break; 5038 } 5039 5040 if (rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK) 5041 rinfo->he_dcm = 1; 5042 return; 5043 } 5044 5045 if (rate_n_flags & RATE_MCS_SGI_MSK) 5046 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 5047 5048 if (format == RATE_MCS_HT_MSK) { 5049 rinfo->flags |= RATE_INFO_FLAGS_MCS; 5050 5051 } else if (format == RATE_MCS_VHT_MSK) { 5052 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 5053 } 5054 5055 } 5056 5057 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw, 5058 struct ieee80211_vif *vif, 5059 struct ieee80211_sta *sta, 5060 struct station_info *sinfo) 5061 { 5062 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5063 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 5064 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 5065 5066 if (mvmsta->avg_energy) { 5067 sinfo->signal_avg = -(s8)mvmsta->avg_energy; 5068 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); 5069 } 5070 5071 if (iwl_mvm_has_tlc_offload(mvm)) { 5072 struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw; 5073 5074 iwl_mvm_set_sta_rate(lq_sta->last_rate_n_flags, &sinfo->txrate); 5075 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE); 5076 } 5077 5078 /* if beacon filtering isn't on mac80211 does it anyway */ 5079 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER)) 5080 return; 5081 5082 if (!vif->bss_conf.assoc) 5083 return; 5084 5085 mutex_lock(&mvm->mutex); 5086 5087 if (mvmvif->ap_sta_id != mvmsta->sta_id) 5088 goto unlock; 5089 5090 if (iwl_mvm_request_statistics(mvm, false)) 5091 goto unlock; 5092 5093 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons + 5094 mvmvif->beacon_stats.accu_num_beacons; 5095 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX); 5096 if (mvmvif->beacon_stats.avg_signal) { 5097 /* firmware only reports a value after RXing a few beacons */ 5098 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal; 5099 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG); 5100 } 5101 unlock: 5102 mutex_unlock(&mvm->mutex); 5103 } 5104 5105 static void iwl_mvm_event_mlme_callback_ini(struct iwl_mvm *mvm, 5106 struct ieee80211_vif *vif, 5107 const struct ieee80211_mlme_event *mlme) 5108 { 5109 if ((mlme->data == ASSOC_EVENT || mlme->data == AUTH_EVENT) && 5110 (mlme->status == MLME_DENIED || mlme->status == MLME_TIMEOUT)) { 5111 iwl_dbg_tlv_time_point(&mvm->fwrt, 5112 IWL_FW_INI_TIME_POINT_ASSOC_FAILED, 5113 NULL); 5114 return; 5115 } 5116 5117 if (mlme->data == DEAUTH_RX_EVENT || mlme->data == DEAUTH_TX_EVENT) { 5118 iwl_dbg_tlv_time_point(&mvm->fwrt, 5119 IWL_FW_INI_TIME_POINT_DEASSOC, 5120 NULL); 5121 return; 5122 } 5123 } 5124 5125 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm, 5126 struct ieee80211_vif *vif, 5127 const struct ieee80211_event *event) 5128 { 5129 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \ 5130 do { \ 5131 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \ 5132 break; \ 5133 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt); \ 5134 } while (0) 5135 5136 struct iwl_fw_dbg_trigger_tlv *trig; 5137 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 5138 5139 if (iwl_trans_dbg_ini_valid(mvm->trans)) { 5140 iwl_mvm_event_mlme_callback_ini(mvm, vif, &event->u.mlme); 5141 return; 5142 } 5143 5144 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 5145 FW_DBG_TRIGGER_MLME); 5146 if (!trig) 5147 return; 5148 5149 trig_mlme = (void *)trig->data; 5150 5151 if (event->u.mlme.data == ASSOC_EVENT) { 5152 if (event->u.mlme.status == MLME_DENIED) 5153 CHECK_MLME_TRIGGER(stop_assoc_denied, 5154 "DENIED ASSOC: reason %d", 5155 event->u.mlme.reason); 5156 else if (event->u.mlme.status == MLME_TIMEOUT) 5157 CHECK_MLME_TRIGGER(stop_assoc_timeout, 5158 "ASSOC TIMEOUT"); 5159 } else if (event->u.mlme.data == AUTH_EVENT) { 5160 if (event->u.mlme.status == MLME_DENIED) 5161 CHECK_MLME_TRIGGER(stop_auth_denied, 5162 "DENIED AUTH: reason %d", 5163 event->u.mlme.reason); 5164 else if (event->u.mlme.status == MLME_TIMEOUT) 5165 CHECK_MLME_TRIGGER(stop_auth_timeout, 5166 "AUTH TIMEOUT"); 5167 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) { 5168 CHECK_MLME_TRIGGER(stop_rx_deauth, 5169 "DEAUTH RX %d", event->u.mlme.reason); 5170 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) { 5171 CHECK_MLME_TRIGGER(stop_tx_deauth, 5172 "DEAUTH TX %d", event->u.mlme.reason); 5173 } 5174 #undef CHECK_MLME_TRIGGER 5175 } 5176 5177 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm, 5178 struct ieee80211_vif *vif, 5179 const struct ieee80211_event *event) 5180 { 5181 struct iwl_fw_dbg_trigger_tlv *trig; 5182 struct iwl_fw_dbg_trigger_ba *ba_trig; 5183 5184 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 5185 FW_DBG_TRIGGER_BA); 5186 if (!trig) 5187 return; 5188 5189 ba_trig = (void *)trig->data; 5190 5191 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid))) 5192 return; 5193 5194 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 5195 "BAR received from %pM, tid %d, ssn %d", 5196 event->u.ba.sta->addr, event->u.ba.tid, 5197 event->u.ba.ssn); 5198 } 5199 5200 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw, 5201 struct ieee80211_vif *vif, 5202 const struct ieee80211_event *event) 5203 { 5204 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5205 5206 switch (event->type) { 5207 case MLME_EVENT: 5208 iwl_mvm_event_mlme_callback(mvm, vif, event); 5209 break; 5210 case BAR_RX_EVENT: 5211 iwl_mvm_event_bar_rx_callback(mvm, vif, event); 5212 break; 5213 case BA_FRAME_TIMEOUT: 5214 iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta, 5215 event->u.ba.tid); 5216 break; 5217 default: 5218 break; 5219 } 5220 } 5221 5222 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm, 5223 enum iwl_mvm_rxq_notif_type type, 5224 bool sync, 5225 const void *data, u32 size) 5226 { 5227 struct { 5228 struct iwl_rxq_sync_cmd cmd; 5229 struct iwl_mvm_internal_rxq_notif notif; 5230 } __packed cmd = { 5231 .cmd.rxq_mask = cpu_to_le32(BIT(mvm->trans->num_rx_queues) - 1), 5232 .cmd.count = 5233 cpu_to_le32(sizeof(struct iwl_mvm_internal_rxq_notif) + 5234 size), 5235 .notif.type = type, 5236 .notif.sync = sync, 5237 }; 5238 struct iwl_host_cmd hcmd = { 5239 .id = WIDE_ID(DATA_PATH_GROUP, TRIGGER_RX_QUEUES_NOTIF_CMD), 5240 .data[0] = &cmd, 5241 .len[0] = sizeof(cmd), 5242 .data[1] = data, 5243 .len[1] = size, 5244 .flags = sync ? 0 : CMD_ASYNC, 5245 }; 5246 int ret; 5247 5248 /* size must be a multiple of DWORD */ 5249 if (WARN_ON(cmd.cmd.count & cpu_to_le32(3))) 5250 return; 5251 5252 if (!iwl_mvm_has_new_rx_api(mvm)) 5253 return; 5254 5255 if (sync) { 5256 cmd.notif.cookie = mvm->queue_sync_cookie; 5257 mvm->queue_sync_state = (1 << mvm->trans->num_rx_queues) - 1; 5258 } 5259 5260 ret = iwl_mvm_send_cmd(mvm, &hcmd); 5261 if (ret) { 5262 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret); 5263 goto out; 5264 } 5265 5266 if (sync) { 5267 lockdep_assert_held(&mvm->mutex); 5268 ret = wait_event_timeout(mvm->rx_sync_waitq, 5269 READ_ONCE(mvm->queue_sync_state) == 0 || 5270 iwl_mvm_is_radio_killed(mvm), 5271 HZ); 5272 WARN_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm), 5273 "queue sync: failed to sync, state is 0x%lx\n", 5274 mvm->queue_sync_state); 5275 } 5276 5277 out: 5278 if (sync) { 5279 mvm->queue_sync_state = 0; 5280 mvm->queue_sync_cookie++; 5281 } 5282 } 5283 5284 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw) 5285 { 5286 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5287 5288 mutex_lock(&mvm->mutex); 5289 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_EMPTY, true, NULL, 0); 5290 mutex_unlock(&mvm->mutex); 5291 } 5292 5293 static int 5294 iwl_mvm_mac_get_ftm_responder_stats(struct ieee80211_hw *hw, 5295 struct ieee80211_vif *vif, 5296 struct cfg80211_ftm_responder_stats *stats) 5297 { 5298 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5299 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 5300 5301 if (vif->p2p || vif->type != NL80211_IFTYPE_AP || 5302 !mvmvif->ap_ibss_active || !vif->bss_conf.ftm_responder) 5303 return -EINVAL; 5304 5305 mutex_lock(&mvm->mutex); 5306 *stats = mvm->ftm_resp_stats; 5307 mutex_unlock(&mvm->mutex); 5308 5309 stats->filled = BIT(NL80211_FTM_STATS_SUCCESS_NUM) | 5310 BIT(NL80211_FTM_STATS_PARTIAL_NUM) | 5311 BIT(NL80211_FTM_STATS_FAILED_NUM) | 5312 BIT(NL80211_FTM_STATS_ASAP_NUM) | 5313 BIT(NL80211_FTM_STATS_NON_ASAP_NUM) | 5314 BIT(NL80211_FTM_STATS_TOTAL_DURATION_MSEC) | 5315 BIT(NL80211_FTM_STATS_UNKNOWN_TRIGGERS_NUM) | 5316 BIT(NL80211_FTM_STATS_RESCHEDULE_REQUESTS_NUM) | 5317 BIT(NL80211_FTM_STATS_OUT_OF_WINDOW_TRIGGERS_NUM); 5318 5319 return 0; 5320 } 5321 5322 static int iwl_mvm_start_pmsr(struct ieee80211_hw *hw, 5323 struct ieee80211_vif *vif, 5324 struct cfg80211_pmsr_request *request) 5325 { 5326 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5327 int ret; 5328 5329 mutex_lock(&mvm->mutex); 5330 ret = iwl_mvm_ftm_start(mvm, vif, request); 5331 mutex_unlock(&mvm->mutex); 5332 5333 return ret; 5334 } 5335 5336 static void iwl_mvm_abort_pmsr(struct ieee80211_hw *hw, 5337 struct ieee80211_vif *vif, 5338 struct cfg80211_pmsr_request *request) 5339 { 5340 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5341 5342 mutex_lock(&mvm->mutex); 5343 iwl_mvm_ftm_abort(mvm, request); 5344 mutex_unlock(&mvm->mutex); 5345 } 5346 5347 static bool iwl_mvm_can_hw_csum(struct sk_buff *skb) 5348 { 5349 u8 protocol = ip_hdr(skb)->protocol; 5350 5351 if (!IS_ENABLED(CONFIG_INET)) 5352 return false; 5353 5354 return protocol == IPPROTO_TCP || protocol == IPPROTO_UDP; 5355 } 5356 5357 static bool iwl_mvm_mac_can_aggregate(struct ieee80211_hw *hw, 5358 struct sk_buff *head, 5359 struct sk_buff *skb) 5360 { 5361 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5362 5363 /* For now don't aggregate IPv6 in AMSDU */ 5364 if (skb->protocol != htons(ETH_P_IP)) 5365 return false; 5366 5367 if (!iwl_mvm_is_csum_supported(mvm)) 5368 return true; 5369 5370 return iwl_mvm_can_hw_csum(skb) == iwl_mvm_can_hw_csum(head); 5371 } 5372 5373 const struct ieee80211_ops iwl_mvm_hw_ops = { 5374 .tx = iwl_mvm_mac_tx, 5375 .wake_tx_queue = iwl_mvm_mac_wake_tx_queue, 5376 .ampdu_action = iwl_mvm_mac_ampdu_action, 5377 .get_antenna = iwl_mvm_op_get_antenna, 5378 .start = iwl_mvm_mac_start, 5379 .reconfig_complete = iwl_mvm_mac_reconfig_complete, 5380 .stop = iwl_mvm_mac_stop, 5381 .add_interface = iwl_mvm_mac_add_interface, 5382 .remove_interface = iwl_mvm_mac_remove_interface, 5383 .config = iwl_mvm_mac_config, 5384 .prepare_multicast = iwl_mvm_prepare_multicast, 5385 .configure_filter = iwl_mvm_configure_filter, 5386 .config_iface_filter = iwl_mvm_config_iface_filter, 5387 .bss_info_changed = iwl_mvm_bss_info_changed, 5388 .hw_scan = iwl_mvm_mac_hw_scan, 5389 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan, 5390 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove, 5391 .sta_state = iwl_mvm_mac_sta_state, 5392 .sta_notify = iwl_mvm_mac_sta_notify, 5393 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames, 5394 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames, 5395 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold, 5396 .sta_rc_update = iwl_mvm_sta_rc_update, 5397 .conf_tx = iwl_mvm_mac_conf_tx, 5398 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx, 5399 .mgd_complete_tx = iwl_mvm_mac_mgd_complete_tx, 5400 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover, 5401 .flush = iwl_mvm_mac_flush, 5402 .sched_scan_start = iwl_mvm_mac_sched_scan_start, 5403 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop, 5404 .set_key = iwl_mvm_mac_set_key, 5405 .update_tkip_key = iwl_mvm_mac_update_tkip_key, 5406 .remain_on_channel = iwl_mvm_roc, 5407 .cancel_remain_on_channel = iwl_mvm_cancel_roc, 5408 .add_chanctx = iwl_mvm_add_chanctx, 5409 .remove_chanctx = iwl_mvm_remove_chanctx, 5410 .change_chanctx = iwl_mvm_change_chanctx, 5411 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx, 5412 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx, 5413 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx, 5414 5415 .start_ap = iwl_mvm_start_ap_ibss, 5416 .stop_ap = iwl_mvm_stop_ap_ibss, 5417 .join_ibss = iwl_mvm_start_ap_ibss, 5418 .leave_ibss = iwl_mvm_stop_ap_ibss, 5419 5420 .tx_last_beacon = iwl_mvm_tx_last_beacon, 5421 5422 .set_tim = iwl_mvm_set_tim, 5423 5424 .channel_switch = iwl_mvm_channel_switch, 5425 .pre_channel_switch = iwl_mvm_pre_channel_switch, 5426 .post_channel_switch = iwl_mvm_post_channel_switch, 5427 .abort_channel_switch = iwl_mvm_abort_channel_switch, 5428 .channel_switch_rx_beacon = iwl_mvm_channel_switch_rx_beacon, 5429 5430 .tdls_channel_switch = iwl_mvm_tdls_channel_switch, 5431 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch, 5432 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch, 5433 5434 .event_callback = iwl_mvm_mac_event_callback, 5435 5436 .sync_rx_queues = iwl_mvm_sync_rx_queues, 5437 5438 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd) 5439 5440 #ifdef CONFIG_PM_SLEEP 5441 /* look at d3.c */ 5442 .suspend = iwl_mvm_suspend, 5443 .resume = iwl_mvm_resume, 5444 .set_wakeup = iwl_mvm_set_wakeup, 5445 .set_rekey_data = iwl_mvm_set_rekey_data, 5446 #if IS_ENABLED(CONFIG_IPV6) 5447 .ipv6_addr_change = iwl_mvm_ipv6_addr_change, 5448 #endif 5449 .set_default_unicast_key = iwl_mvm_set_default_unicast_key, 5450 #endif 5451 .get_survey = iwl_mvm_mac_get_survey, 5452 .sta_statistics = iwl_mvm_mac_sta_statistics, 5453 .get_ftm_responder_stats = iwl_mvm_mac_get_ftm_responder_stats, 5454 .start_pmsr = iwl_mvm_start_pmsr, 5455 .abort_pmsr = iwl_mvm_abort_pmsr, 5456 5457 .can_aggregate_in_amsdu = iwl_mvm_mac_can_aggregate, 5458 #ifdef CONFIG_IWLWIFI_DEBUGFS 5459 .sta_add_debugfs = iwl_mvm_sta_add_debugfs, 5460 #endif 5461 }; 5462