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 #if defined(__FreeBSD__) 16 #include <linux/math64.h> 17 #endif 18 #include <net/mac80211.h> 19 #include <net/ieee80211_radiotap.h> 20 #include <net/tcp.h> 21 #if defined(__FreeBSD__) 22 #include <linux/udp.h> 23 #endif 24 25 #include "iwl-op-mode.h" 26 #include "iwl-io.h" 27 #include "mvm.h" 28 #include "sta.h" 29 #include "time-event.h" 30 #include "iwl-eeprom-parse.h" 31 #include "iwl-phy-db.h" 32 #ifdef CONFIG_NL80211_TESTMODE 33 #include "testmode.h" 34 #endif 35 #include "fw/error-dump.h" 36 #include "iwl-prph.h" 37 #include "iwl-nvm-parse.h" 38 39 static const struct ieee80211_iface_limit iwl_mvm_limits[] = { 40 { 41 .max = 1, 42 .types = BIT(NL80211_IFTYPE_STATION), 43 }, 44 { 45 .max = 1, 46 .types = BIT(NL80211_IFTYPE_AP) | 47 BIT(NL80211_IFTYPE_P2P_CLIENT) | 48 BIT(NL80211_IFTYPE_P2P_GO), 49 }, 50 { 51 .max = 1, 52 .types = BIT(NL80211_IFTYPE_P2P_DEVICE), 53 }, 54 }; 55 56 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = { 57 { 58 .num_different_channels = 2, 59 .max_interfaces = 3, 60 .limits = iwl_mvm_limits, 61 .n_limits = ARRAY_SIZE(iwl_mvm_limits), 62 }, 63 }; 64 65 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 66 /* 67 * Use the reserved field to indicate magic values. 68 * these values will only be used internally by the driver, 69 * and won't make it to the fw (reserved will be 0). 70 * BC_FILTER_MAGIC_IP - configure the val of this attribute to 71 * be the vif's ip address. in case there is not a single 72 * ip address (0, or more than 1), this attribute will 73 * be skipped. 74 * BC_FILTER_MAGIC_MAC - set the val of this attribute to 75 * the LSB bytes of the vif's mac address 76 */ 77 enum { 78 BC_FILTER_MAGIC_NONE = 0, 79 BC_FILTER_MAGIC_IP, 80 BC_FILTER_MAGIC_MAC, 81 }; 82 83 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = { 84 { 85 /* arp */ 86 .discard = 0, 87 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL, 88 .attrs = { 89 { 90 /* frame type - arp, hw type - ethernet */ 91 .offset_type = 92 BCAST_FILTER_OFFSET_PAYLOAD_START, 93 .offset = sizeof(rfc1042_header), 94 .val = cpu_to_be32(0x08060001), 95 .mask = cpu_to_be32(0xffffffff), 96 }, 97 { 98 /* arp dest ip */ 99 .offset_type = 100 BCAST_FILTER_OFFSET_PAYLOAD_START, 101 .offset = sizeof(rfc1042_header) + 2 + 102 sizeof(struct arphdr) + 103 ETH_ALEN + sizeof(__be32) + 104 ETH_ALEN, 105 .mask = cpu_to_be32(0xffffffff), 106 /* mark it as special field */ 107 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP), 108 }, 109 }, 110 }, 111 { 112 /* dhcp offer bcast */ 113 .discard = 0, 114 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4, 115 .attrs = { 116 { 117 /* udp dest port - 68 (bootp client)*/ 118 .offset_type = BCAST_FILTER_OFFSET_IP_END, 119 .offset = offsetof(struct udphdr, dest), 120 .val = cpu_to_be32(0x00440000), 121 .mask = cpu_to_be32(0xffff0000), 122 }, 123 { 124 /* dhcp - lsb bytes of client hw address */ 125 .offset_type = BCAST_FILTER_OFFSET_IP_END, 126 .offset = 38, 127 .mask = cpu_to_be32(0xffffffff), 128 /* mark it as special field */ 129 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC), 130 }, 131 }, 132 }, 133 /* last filter must be empty */ 134 {}, 135 }; 136 #endif 137 138 static const struct cfg80211_pmsr_capabilities iwl_mvm_pmsr_capa = { 139 .max_peers = IWL_MVM_TOF_MAX_APS, 140 .report_ap_tsf = 1, 141 .randomize_mac_addr = 1, 142 143 .ftm = { 144 .supported = 1, 145 .asap = 1, 146 .non_asap = 1, 147 .request_lci = 1, 148 .request_civicloc = 1, 149 .trigger_based = 1, 150 .non_trigger_based = 1, 151 .max_bursts_exponent = -1, /* all supported */ 152 .max_ftms_per_burst = 0, /* no limits */ 153 .bandwidths = BIT(NL80211_CHAN_WIDTH_20_NOHT) | 154 BIT(NL80211_CHAN_WIDTH_20) | 155 BIT(NL80211_CHAN_WIDTH_40) | 156 BIT(NL80211_CHAN_WIDTH_80) | 157 BIT(NL80211_CHAN_WIDTH_160), 158 .preambles = BIT(NL80211_PREAMBLE_LEGACY) | 159 BIT(NL80211_PREAMBLE_HT) | 160 BIT(NL80211_PREAMBLE_VHT) | 161 BIT(NL80211_PREAMBLE_HE), 162 }, 163 }; 164 165 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 166 enum set_key_cmd cmd, 167 struct ieee80211_vif *vif, 168 struct ieee80211_sta *sta, 169 struct ieee80211_key_conf *key); 170 171 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm) 172 { 173 int i; 174 175 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts)); 176 for (i = 0; i < NUM_PHY_CTX; i++) { 177 mvm->phy_ctxts[i].id = i; 178 mvm->phy_ctxts[i].ref = 0; 179 } 180 } 181 182 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy, 183 const char *alpha2, 184 enum iwl_mcc_source src_id, 185 bool *changed) 186 { 187 struct ieee80211_regdomain *regd = NULL; 188 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 189 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 190 struct iwl_mcc_update_resp *resp; 191 u8 resp_ver; 192 193 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2); 194 195 lockdep_assert_held(&mvm->mutex); 196 197 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id); 198 if (IS_ERR_OR_NULL(resp)) { 199 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n", 200 PTR_ERR_OR_ZERO(resp)); 201 goto out; 202 } 203 204 if (changed) { 205 u32 status = le32_to_cpu(resp->status); 206 207 *changed = (status == MCC_RESP_NEW_CHAN_PROFILE || 208 status == MCC_RESP_ILLEGAL); 209 } 210 resp_ver = iwl_fw_lookup_notif_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, 211 MCC_UPDATE_CMD, 0); 212 IWL_DEBUG_LAR(mvm, "MCC update response version: %d\n", resp_ver); 213 214 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg, 215 __le32_to_cpu(resp->n_channels), 216 resp->channels, 217 __le16_to_cpu(resp->mcc), 218 __le16_to_cpu(resp->geo_info), 219 __le16_to_cpu(resp->cap), resp_ver); 220 /* Store the return source id */ 221 src_id = resp->source_id; 222 kfree(resp); 223 if (IS_ERR_OR_NULL(regd)) { 224 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n", 225 PTR_ERR_OR_ZERO(regd)); 226 goto out; 227 } 228 229 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n", 230 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id); 231 mvm->lar_regdom_set = true; 232 mvm->mcc_src = src_id; 233 234 out: 235 return regd; 236 } 237 238 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm) 239 { 240 bool changed; 241 struct ieee80211_regdomain *regd; 242 243 if (!iwl_mvm_is_lar_supported(mvm)) 244 return; 245 246 regd = iwl_mvm_get_current_regdomain(mvm, &changed); 247 if (!IS_ERR_OR_NULL(regd)) { 248 /* only update the regulatory core if changed */ 249 if (changed) 250 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd); 251 252 kfree(regd); 253 } 254 } 255 256 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm, 257 bool *changed) 258 { 259 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ", 260 iwl_mvm_is_wifi_mcc_supported(mvm) ? 261 MCC_SOURCE_GET_CURRENT : 262 MCC_SOURCE_OLD_FW, changed); 263 } 264 265 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm) 266 { 267 enum iwl_mcc_source used_src; 268 struct ieee80211_regdomain *regd; 269 int ret; 270 bool changed; 271 const struct ieee80211_regdomain *r = 272 wiphy_dereference(mvm->hw->wiphy, mvm->hw->wiphy->regd); 273 274 if (!r) 275 return -ENOENT; 276 277 /* save the last source in case we overwrite it below */ 278 used_src = mvm->mcc_src; 279 if (iwl_mvm_is_wifi_mcc_supported(mvm)) { 280 /* Notify the firmware we support wifi location updates */ 281 regd = iwl_mvm_get_current_regdomain(mvm, NULL); 282 if (!IS_ERR_OR_NULL(regd)) 283 kfree(regd); 284 } 285 286 /* Now set our last stored MCC and source */ 287 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src, 288 &changed); 289 if (IS_ERR_OR_NULL(regd)) 290 return -EIO; 291 292 /* update cfg80211 if the regdomain was changed */ 293 if (changed) 294 ret = regulatory_set_wiphy_regd_sync(mvm->hw->wiphy, regd); 295 else 296 ret = 0; 297 298 kfree(regd); 299 return ret; 300 } 301 302 static const u8 he_if_types_ext_capa_sta[] = { 303 [0] = WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING, 304 [2] = WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT, 305 [7] = WLAN_EXT_CAPA8_OPMODE_NOTIF, 306 [9] = WLAN_EXT_CAPA10_TWT_REQUESTER_SUPPORT, 307 }; 308 309 static const struct wiphy_iftype_ext_capab he_iftypes_ext_capa[] = { 310 { 311 .iftype = NL80211_IFTYPE_STATION, 312 .extended_capabilities = he_if_types_ext_capa_sta, 313 .extended_capabilities_mask = he_if_types_ext_capa_sta, 314 .extended_capabilities_len = sizeof(he_if_types_ext_capa_sta), 315 }, 316 }; 317 318 static int 319 iwl_mvm_op_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant) 320 { 321 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 322 *tx_ant = iwl_mvm_get_valid_tx_ant(mvm); 323 *rx_ant = iwl_mvm_get_valid_rx_ant(mvm); 324 return 0; 325 } 326 327 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) 328 { 329 struct ieee80211_hw *hw = mvm->hw; 330 int num_mac, ret, i; 331 static const u32 mvm_ciphers[] = { 332 WLAN_CIPHER_SUITE_WEP40, 333 WLAN_CIPHER_SUITE_WEP104, 334 WLAN_CIPHER_SUITE_TKIP, 335 WLAN_CIPHER_SUITE_CCMP, 336 }; 337 #ifdef CONFIG_PM_SLEEP 338 bool unified = fw_has_capa(&mvm->fw->ucode_capa, 339 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 340 #endif 341 342 /* Tell mac80211 our characteristics */ 343 ieee80211_hw_set(hw, SIGNAL_DBM); 344 ieee80211_hw_set(hw, SPECTRUM_MGMT); 345 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 346 ieee80211_hw_set(hw, WANT_MONITOR_VIF); 347 ieee80211_hw_set(hw, SUPPORTS_PS); 348 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 349 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 350 ieee80211_hw_set(hw, TIMING_BEACON_ONLY); 351 ieee80211_hw_set(hw, CONNECTION_MONITOR); 352 ieee80211_hw_set(hw, CHANCTX_STA_CSA); 353 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); 354 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS); 355 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU); 356 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR); 357 ieee80211_hw_set(hw, DEAUTH_NEED_MGD_TX_PREP); 358 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW); 359 ieee80211_hw_set(hw, BUFF_MMPDU_TXQ); 360 ieee80211_hw_set(hw, STA_MMPDU_TXQ); 361 /* 362 * On older devices, enabling TX A-MSDU occasionally leads to 363 * something getting messed up, the command read from the FIFO 364 * gets out of sync and isn't a TX command, so that we have an 365 * assert EDC. 366 * 367 * It's not clear where the bug is, but since we didn't used to 368 * support A-MSDU until moving the mac80211 iTXQs, just leave it 369 * for older devices. We also don't see this issue on any newer 370 * devices. 371 */ 372 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_9000) 373 ieee80211_hw_set(hw, TX_AMSDU); 374 ieee80211_hw_set(hw, TX_FRAG_LIST); 375 376 if (iwl_mvm_has_tlc_offload(mvm)) { 377 ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW); 378 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 379 } 380 381 if (iwl_mvm_has_new_rx_api(mvm)) 382 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER); 383 384 if (fw_has_capa(&mvm->fw->ucode_capa, 385 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) { 386 ieee80211_hw_set(hw, AP_LINK_PS); 387 } else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) { 388 /* 389 * we absolutely need this for the new TX API since that comes 390 * with many more queues than the current code can deal with 391 * for station powersave 392 */ 393 return -EINVAL; 394 } 395 396 if (mvm->trans->num_rx_queues > 1) 397 ieee80211_hw_set(hw, USES_RSS); 398 399 if (mvm->trans->max_skb_frags) 400 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG; 401 402 hw->queues = IEEE80211_NUM_ACS; 403 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE; 404 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC | 405 IEEE80211_RADIOTAP_MCS_HAVE_STBC; 406 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC | 407 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED; 408 409 hw->radiotap_timestamp.units_pos = 410 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US | 411 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ; 412 /* this is the case for CCK frames, it's better (only 8) for OFDM */ 413 hw->radiotap_timestamp.accuracy = 22; 414 415 if (!iwl_mvm_has_tlc_offload(mvm)) 416 hw->rate_control_algorithm = RS_NAME; 417 418 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES; 419 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP; 420 hw->max_tx_fragments = mvm->trans->max_skb_frags; 421 422 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6); 423 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers)); 424 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers); 425 hw->wiphy->cipher_suites = mvm->ciphers; 426 427 if (iwl_mvm_has_new_rx_api(mvm)) { 428 mvm->ciphers[hw->wiphy->n_cipher_suites] = 429 WLAN_CIPHER_SUITE_GCMP; 430 hw->wiphy->n_cipher_suites++; 431 mvm->ciphers[hw->wiphy->n_cipher_suites] = 432 WLAN_CIPHER_SUITE_GCMP_256; 433 hw->wiphy->n_cipher_suites++; 434 } 435 436 if (iwlwifi_mod_params.swcrypto) 437 IWL_ERR(mvm, 438 "iwlmvm doesn't allow to disable HW crypto, check swcrypto module parameter\n"); 439 if (!iwlwifi_mod_params.bt_coex_active) 440 IWL_ERR(mvm, 441 "iwlmvm doesn't allow to disable BT Coex, check bt_coex_active module parameter\n"); 442 443 ieee80211_hw_set(hw, MFP_CAPABLE); 444 mvm->ciphers[hw->wiphy->n_cipher_suites] = WLAN_CIPHER_SUITE_AES_CMAC; 445 hw->wiphy->n_cipher_suites++; 446 if (iwl_mvm_has_new_rx_api(mvm)) { 447 mvm->ciphers[hw->wiphy->n_cipher_suites] = 448 WLAN_CIPHER_SUITE_BIP_GMAC_128; 449 hw->wiphy->n_cipher_suites++; 450 mvm->ciphers[hw->wiphy->n_cipher_suites] = 451 WLAN_CIPHER_SUITE_BIP_GMAC_256; 452 hw->wiphy->n_cipher_suites++; 453 } 454 455 /* currently FW API supports only one optional cipher scheme */ 456 if (mvm->fw->cs[0].cipher) { 457 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0]; 458 struct ieee80211_cipher_scheme *cs = &mvm->cs[0]; 459 460 mvm->hw->n_cipher_schemes = 1; 461 462 cs->cipher = le32_to_cpu(fwcs->cipher); 463 cs->iftype = BIT(NL80211_IFTYPE_STATION); 464 cs->hdr_len = fwcs->hdr_len; 465 cs->pn_len = fwcs->pn_len; 466 cs->pn_off = fwcs->pn_off; 467 cs->key_idx_off = fwcs->key_idx_off; 468 cs->key_idx_mask = fwcs->key_idx_mask; 469 cs->key_idx_shift = fwcs->key_idx_shift; 470 cs->mic_len = fwcs->mic_len; 471 472 mvm->hw->cipher_schemes = mvm->cs; 473 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher; 474 hw->wiphy->n_cipher_suites++; 475 } 476 477 if (fw_has_capa(&mvm->fw->ucode_capa, 478 IWL_UCODE_TLV_CAPA_FTM_CALIBRATED)) { 479 wiphy_ext_feature_set(hw->wiphy, 480 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER); 481 hw->wiphy->pmsr_capa = &iwl_mvm_pmsr_capa; 482 } 483 484 if (fw_has_capa(&mvm->fw->ucode_capa, 485 IWL_UCODE_TLV_CAPA_BIGTK_SUPPORT)) 486 wiphy_ext_feature_set(hw->wiphy, 487 NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT); 488 489 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS); 490 hw->wiphy->features |= 491 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR | 492 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR | 493 NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 494 495 hw->sta_data_size = sizeof(struct iwl_mvm_sta); 496 hw->vif_data_size = sizeof(struct iwl_mvm_vif); 497 hw->chanctx_data_size = sizeof(u16); 498 hw->txq_data_size = sizeof(struct iwl_mvm_txq); 499 500 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 501 BIT(NL80211_IFTYPE_P2P_CLIENT) | 502 BIT(NL80211_IFTYPE_AP) | 503 BIT(NL80211_IFTYPE_P2P_GO) | 504 BIT(NL80211_IFTYPE_P2P_DEVICE) | 505 BIT(NL80211_IFTYPE_ADHOC); 506 507 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; 508 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS); 509 510 /* The new Tx API does not allow to pass the key or keyid of a MPDU to 511 * the hw, preventing us to control which key(id) to use per MPDU. 512 * Till that's fixed we can't use Extended Key ID for the newer cards. 513 */ 514 if (!iwl_mvm_has_new_tx_api(mvm)) 515 wiphy_ext_feature_set(hw->wiphy, 516 NL80211_EXT_FEATURE_EXT_KEY_ID); 517 hw->wiphy->features |= NL80211_FEATURE_HT_IBSS; 518 519 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR; 520 if (iwl_mvm_is_lar_supported(mvm)) 521 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED; 522 else 523 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | 524 REGULATORY_DISABLE_BEACON_HINTS; 525 526 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; 527 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; 528 hw->wiphy->flags |= WIPHY_FLAG_SPLIT_SCAN_6GHZ; 529 530 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations; 531 hw->wiphy->n_iface_combinations = 532 ARRAY_SIZE(iwl_mvm_iface_combinations); 533 534 hw->wiphy->max_remain_on_channel_duration = 10000; 535 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; 536 537 /* Extract MAC address */ 538 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN); 539 hw->wiphy->addresses = mvm->addresses; 540 hw->wiphy->n_addresses = 1; 541 542 /* Extract additional MAC addresses if available */ 543 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ? 544 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1; 545 546 for (i = 1; i < num_mac; i++) { 547 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr, 548 ETH_ALEN); 549 mvm->addresses[i].addr[5]++; 550 hw->wiphy->n_addresses++; 551 } 552 553 iwl_mvm_reset_phy_ctxts(mvm); 554 555 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm); 556 557 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; 558 559 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK); 560 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) || 561 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK)); 562 563 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 564 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS; 565 else 566 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS; 567 568 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels) 569 hw->wiphy->bands[NL80211_BAND_2GHZ] = 570 &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 571 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) { 572 hw->wiphy->bands[NL80211_BAND_5GHZ] = 573 &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 574 575 if (fw_has_capa(&mvm->fw->ucode_capa, 576 IWL_UCODE_TLV_CAPA_BEAMFORMER) && 577 fw_has_api(&mvm->fw->ucode_capa, 578 IWL_UCODE_TLV_API_LQ_SS_PARAMS)) 579 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |= 580 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE; 581 } 582 if (fw_has_capa(&mvm->fw->ucode_capa, 583 IWL_UCODE_TLV_CAPA_PSC_CHAN_SUPPORT) && 584 mvm->nvm_data->bands[NL80211_BAND_6GHZ].n_channels) 585 hw->wiphy->bands[NL80211_BAND_6GHZ] = 586 &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; 587 588 hw->wiphy->hw_version = mvm->trans->hw_id; 589 590 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 591 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; 592 else 593 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; 594 595 hw->wiphy->max_sched_scan_reqs = 1; 596 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX; 597 hw->wiphy->max_match_sets = iwl_umac_scan_get_max_profiles(mvm->fw); 598 /* we create the 802.11 header and zero length SSID IE. */ 599 hw->wiphy->max_sched_scan_ie_len = 600 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2; 601 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS; 602 hw->wiphy->max_sched_scan_plan_interval = U16_MAX; 603 604 /* 605 * the firmware uses u8 for num of iterations, but 0xff is saved for 606 * infinite loop, so the maximum number of iterations is actually 254. 607 */ 608 hw->wiphy->max_sched_scan_plan_iterations = 254; 609 610 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN | 611 NL80211_FEATURE_LOW_PRIORITY_SCAN | 612 NL80211_FEATURE_P2P_GO_OPPPS | 613 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | 614 NL80211_FEATURE_DYNAMIC_SMPS | 615 NL80211_FEATURE_STATIC_SMPS | 616 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION; 617 618 if (fw_has_capa(&mvm->fw->ucode_capa, 619 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)) 620 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION; 621 if (fw_has_capa(&mvm->fw->ucode_capa, 622 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)) 623 hw->wiphy->features |= NL80211_FEATURE_QUIET; 624 625 if (fw_has_capa(&mvm->fw->ucode_capa, 626 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) 627 hw->wiphy->features |= 628 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES; 629 630 if (fw_has_capa(&mvm->fw->ucode_capa, 631 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 632 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES; 633 634 if (iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, 635 WOWLAN_KEK_KCK_MATERIAL, 636 IWL_FW_CMD_VER_UNKNOWN) == 3) 637 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK; 638 639 if (fw_has_api(&mvm->fw->ucode_capa, 640 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) { 641 wiphy_ext_feature_set(hw->wiphy, 642 NL80211_EXT_FEATURE_SCAN_START_TIME); 643 wiphy_ext_feature_set(hw->wiphy, 644 NL80211_EXT_FEATURE_BSS_PARENT_TSF); 645 } 646 647 if (iwl_mvm_is_oce_supported(mvm)) { 648 wiphy_ext_feature_set(hw->wiphy, 649 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP); 650 wiphy_ext_feature_set(hw->wiphy, 651 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME); 652 wiphy_ext_feature_set(hw->wiphy, 653 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION); 654 wiphy_ext_feature_set(hw->wiphy, 655 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE); 656 } 657 658 if (mvm->nvm_data->sku_cap_11ax_enable && 659 !iwlwifi_mod_params.disable_11ax) { 660 hw->wiphy->iftype_ext_capab = he_iftypes_ext_capa; 661 hw->wiphy->num_iftype_ext_capab = 662 ARRAY_SIZE(he_iftypes_ext_capa); 663 664 ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID); 665 ieee80211_hw_set(hw, SUPPORTS_ONLY_HE_MULTI_BSSID); 666 } 667 668 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; 669 670 #ifdef CONFIG_PM_SLEEP 671 if ((unified || mvm->fw->img[IWL_UCODE_WOWLAN].num_sec) && 672 mvm->trans->ops->d3_suspend && 673 mvm->trans->ops->d3_resume && 674 device_can_wakeup(mvm->trans->dev)) { 675 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT | 676 WIPHY_WOWLAN_DISCONNECT | 677 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 678 WIPHY_WOWLAN_RFKILL_RELEASE | 679 WIPHY_WOWLAN_NET_DETECT; 680 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 681 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 682 WIPHY_WOWLAN_4WAY_HANDSHAKE; 683 684 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS; 685 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN; 686 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN; 687 mvm->wowlan.max_nd_match_sets = 688 iwl_umac_scan_get_max_profiles(mvm->fw); 689 hw->wiphy->wowlan = &mvm->wowlan; 690 } 691 #endif 692 693 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 694 /* assign default bcast filtering configuration */ 695 mvm->bcast_filters = iwl_mvm_default_bcast_filters; 696 #endif 697 698 ret = iwl_mvm_leds_init(mvm); 699 if (ret) 700 return ret; 701 702 if (fw_has_capa(&mvm->fw->ucode_capa, 703 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) { 704 IWL_DEBUG_TDLS(mvm, "TDLS supported\n"); 705 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS; 706 ieee80211_hw_set(hw, TDLS_WIDER_BW); 707 } 708 709 if (fw_has_capa(&mvm->fw->ucode_capa, 710 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) { 711 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n"); 712 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH; 713 } 714 715 hw->netdev_features |= mvm->cfg->features; 716 if (!iwl_mvm_is_csum_supported(mvm)) 717 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS | 718 NETIF_F_RXCSUM); 719 720 if (mvm->cfg->vht_mu_mimo_supported) 721 wiphy_ext_feature_set(hw->wiphy, 722 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER); 723 724 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_PROTECTED_TWT)) 725 wiphy_ext_feature_set(hw->wiphy, 726 NL80211_EXT_FEATURE_PROTECTED_TWT); 727 728 hw->wiphy->available_antennas_tx = iwl_mvm_get_valid_tx_ant(mvm); 729 hw->wiphy->available_antennas_rx = iwl_mvm_get_valid_rx_ant(mvm); 730 731 ret = ieee80211_register_hw(mvm->hw); 732 if (ret) { 733 iwl_mvm_leds_exit(mvm); 734 } 735 736 return ret; 737 } 738 739 static void iwl_mvm_tx_skb(struct iwl_mvm *mvm, struct sk_buff *skb, 740 struct ieee80211_sta *sta) 741 { 742 if (likely(sta)) { 743 if (likely(iwl_mvm_tx_skb_sta(mvm, skb, sta) == 0)) 744 return; 745 } else { 746 if (likely(iwl_mvm_tx_skb_non_sta(mvm, skb) == 0)) 747 return; 748 } 749 750 ieee80211_free_txskb(mvm->hw, skb); 751 } 752 753 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw, 754 struct ieee80211_tx_control *control, 755 struct sk_buff *skb) 756 { 757 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 758 struct ieee80211_sta *sta = control->sta; 759 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 760 struct ieee80211_hdr *hdr = (void *)skb->data; 761 bool offchannel = IEEE80211_SKB_CB(skb)->flags & 762 IEEE80211_TX_CTL_TX_OFFCHAN; 763 764 if (iwl_mvm_is_radio_killed(mvm)) { 765 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n"); 766 goto drop; 767 } 768 769 if (offchannel && 770 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) && 771 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status)) 772 goto drop; 773 774 /* 775 * bufferable MMPDUs or MMPDUs on STA interfaces come via TXQs 776 * so we treat the others as broadcast 777 */ 778 if (ieee80211_is_mgmt(hdr->frame_control)) 779 sta = NULL; 780 781 /* If there is no sta, and it's not offchannel - send through AP */ 782 if (!sta && info->control.vif->type == NL80211_IFTYPE_STATION && 783 !offchannel) { 784 struct iwl_mvm_vif *mvmvif = 785 iwl_mvm_vif_from_mac80211(info->control.vif); 786 u8 ap_sta_id = READ_ONCE(mvmvif->ap_sta_id); 787 788 if (ap_sta_id < mvm->fw->ucode_capa.num_stations) { 789 /* mac80211 holds rcu read lock */ 790 sta = rcu_dereference(mvm->fw_id_to_mac_id[ap_sta_id]); 791 if (IS_ERR_OR_NULL(sta)) 792 goto drop; 793 } 794 } 795 796 iwl_mvm_tx_skb(mvm, skb, sta); 797 return; 798 drop: 799 ieee80211_free_txskb(hw, skb); 800 } 801 802 void iwl_mvm_mac_itxq_xmit(struct ieee80211_hw *hw, struct ieee80211_txq *txq) 803 { 804 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 805 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq); 806 struct sk_buff *skb = NULL; 807 808 /* 809 * No need for threads to be pending here, they can leave the first 810 * taker all the work. 811 * 812 * mvmtxq->tx_request logic: 813 * 814 * If 0, no one is currently TXing, set to 1 to indicate current thread 815 * will now start TX and other threads should quit. 816 * 817 * If 1, another thread is currently TXing, set to 2 to indicate to 818 * that thread that there was another request. Since that request may 819 * have raced with the check whether the queue is empty, the TXing 820 * thread should check the queue's status one more time before leaving. 821 * This check is done in order to not leave any TX hanging in the queue 822 * until the next TX invocation (which may not even happen). 823 * 824 * If 2, another thread is currently TXing, and it will already double 825 * check the queue, so do nothing. 826 */ 827 if (atomic_fetch_add_unless(&mvmtxq->tx_request, 1, 2)) 828 return; 829 830 rcu_read_lock(); 831 do { 832 while (likely(!mvmtxq->stopped && 833 !test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status))) { 834 skb = ieee80211_tx_dequeue(hw, txq); 835 836 if (!skb) { 837 if (txq->sta) 838 IWL_DEBUG_TX(mvm, 839 "TXQ of sta %pM tid %d is now empty\n", 840 txq->sta->addr, 841 txq->tid); 842 break; 843 } 844 845 iwl_mvm_tx_skb(mvm, skb, txq->sta); 846 } 847 } while (atomic_dec_return(&mvmtxq->tx_request)); 848 rcu_read_unlock(); 849 } 850 851 static void iwl_mvm_mac_wake_tx_queue(struct ieee80211_hw *hw, 852 struct ieee80211_txq *txq) 853 { 854 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 855 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq); 856 857 /* 858 * Please note that racing is handled very carefully here: 859 * mvmtxq->txq_id is updated during allocation, and mvmtxq->list is 860 * deleted afterwards. 861 * This means that if: 862 * mvmtxq->txq_id != INVALID_QUEUE && list_empty(&mvmtxq->list): 863 * queue is allocated and we can TX. 864 * mvmtxq->txq_id != INVALID_QUEUE && !list_empty(&mvmtxq->list): 865 * a race, should defer the frame. 866 * mvmtxq->txq_id == INVALID_QUEUE && list_empty(&mvmtxq->list): 867 * need to allocate the queue and defer the frame. 868 * mvmtxq->txq_id == INVALID_QUEUE && !list_empty(&mvmtxq->list): 869 * queue is already scheduled for allocation, no need to allocate, 870 * should defer the frame. 871 */ 872 873 /* If the queue is allocated TX and return. */ 874 if (!txq->sta || mvmtxq->txq_id != IWL_MVM_INVALID_QUEUE) { 875 /* 876 * Check that list is empty to avoid a race where txq_id is 877 * already updated, but the queue allocation work wasn't 878 * finished 879 */ 880 if (unlikely(txq->sta && !list_empty(&mvmtxq->list))) 881 return; 882 883 iwl_mvm_mac_itxq_xmit(hw, txq); 884 return; 885 } 886 887 /* The list is being deleted only after the queue is fully allocated. */ 888 if (!list_empty(&mvmtxq->list)) 889 return; 890 891 list_add_tail(&mvmtxq->list, &mvm->add_stream_txqs); 892 schedule_work(&mvm->add_stream_wk); 893 } 894 895 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \ 896 do { \ 897 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \ 898 break; \ 899 iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt); \ 900 } while (0) 901 902 static void 903 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 904 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn, 905 enum ieee80211_ampdu_mlme_action action) 906 { 907 struct iwl_fw_dbg_trigger_tlv *trig; 908 struct iwl_fw_dbg_trigger_ba *ba_trig; 909 910 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 911 FW_DBG_TRIGGER_BA); 912 if (!trig) 913 return; 914 915 ba_trig = (void *)trig->data; 916 917 switch (action) { 918 case IEEE80211_AMPDU_TX_OPERATIONAL: { 919 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 920 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 921 922 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid, 923 "TX AGG START: MAC %pM tid %d ssn %d\n", 924 sta->addr, tid, tid_data->ssn); 925 break; 926 } 927 case IEEE80211_AMPDU_TX_STOP_CONT: 928 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid, 929 "TX AGG STOP: MAC %pM tid %d\n", 930 sta->addr, tid); 931 break; 932 case IEEE80211_AMPDU_RX_START: 933 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid, 934 "RX AGG START: MAC %pM tid %d ssn %d\n", 935 sta->addr, tid, rx_ba_ssn); 936 break; 937 case IEEE80211_AMPDU_RX_STOP: 938 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid, 939 "RX AGG STOP: MAC %pM tid %d\n", 940 sta->addr, tid); 941 break; 942 default: 943 break; 944 } 945 } 946 947 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw, 948 struct ieee80211_vif *vif, 949 struct ieee80211_ampdu_params *params) 950 { 951 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 952 int ret; 953 struct ieee80211_sta *sta = params->sta; 954 enum ieee80211_ampdu_mlme_action action = params->action; 955 u16 tid = params->tid; 956 u16 *ssn = ¶ms->ssn; 957 u16 buf_size = params->buf_size; 958 bool amsdu = params->amsdu; 959 u16 timeout = params->timeout; 960 961 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n", 962 sta->addr, tid, action); 963 964 if (!(mvm->nvm_data->sku_cap_11n_enable)) 965 return -EACCES; 966 967 mutex_lock(&mvm->mutex); 968 969 switch (action) { 970 case IEEE80211_AMPDU_RX_START: 971 if (iwl_mvm_vif_from_mac80211(vif)->ap_sta_id == 972 iwl_mvm_sta_from_mac80211(sta)->sta_id) { 973 struct iwl_mvm_vif *mvmvif; 974 u16 macid = iwl_mvm_vif_from_mac80211(vif)->id; 975 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid]; 976 977 mdata->opened_rx_ba_sessions = true; 978 mvmvif = iwl_mvm_vif_from_mac80211(vif); 979 cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk); 980 } 981 if (!iwl_enable_rx_ampdu()) { 982 ret = -EINVAL; 983 break; 984 } 985 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size, 986 timeout); 987 break; 988 case IEEE80211_AMPDU_RX_STOP: 989 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size, 990 timeout); 991 break; 992 case IEEE80211_AMPDU_TX_START: 993 if (!iwl_enable_tx_ampdu()) { 994 ret = -EINVAL; 995 break; 996 } 997 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn); 998 break; 999 case IEEE80211_AMPDU_TX_STOP_CONT: 1000 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid); 1001 break; 1002 case IEEE80211_AMPDU_TX_STOP_FLUSH: 1003 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 1004 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid); 1005 break; 1006 case IEEE80211_AMPDU_TX_OPERATIONAL: 1007 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, 1008 buf_size, amsdu); 1009 break; 1010 default: 1011 WARN_ON_ONCE(1); 1012 ret = -EINVAL; 1013 break; 1014 } 1015 1016 if (!ret) { 1017 u16 rx_ba_ssn = 0; 1018 1019 if (action == IEEE80211_AMPDU_RX_START) 1020 rx_ba_ssn = *ssn; 1021 1022 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid, 1023 rx_ba_ssn, action); 1024 } 1025 mutex_unlock(&mvm->mutex); 1026 1027 return ret; 1028 } 1029 1030 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac, 1031 struct ieee80211_vif *vif) 1032 { 1033 struct iwl_mvm *mvm = data; 1034 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1035 1036 mvmvif->uploaded = false; 1037 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1038 1039 spin_lock_bh(&mvm->time_event_lock); 1040 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data); 1041 spin_unlock_bh(&mvm->time_event_lock); 1042 1043 mvmvif->phy_ctxt = NULL; 1044 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data)); 1045 memset(&mvmvif->probe_resp_data, 0, sizeof(mvmvif->probe_resp_data)); 1046 } 1047 1048 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) 1049 { 1050 iwl_mvm_stop_device(mvm); 1051 1052 mvm->cur_aid = 0; 1053 1054 mvm->scan_status = 0; 1055 mvm->ps_disabled = false; 1056 mvm->rfkill_safe_init_done = false; 1057 1058 /* just in case one was running */ 1059 iwl_mvm_cleanup_roc_te(mvm); 1060 ieee80211_remain_on_channel_expired(mvm->hw); 1061 1062 iwl_mvm_ftm_restart(mvm); 1063 1064 /* 1065 * cleanup all interfaces, even inactive ones, as some might have 1066 * gone down during the HW restart 1067 */ 1068 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm); 1069 1070 mvm->p2p_device_vif = NULL; 1071 1072 iwl_mvm_reset_phy_ctxts(mvm); 1073 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 1074 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif)); 1075 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd)); 1076 1077 ieee80211_wake_queues(mvm->hw); 1078 1079 mvm->vif_count = 0; 1080 mvm->rx_ba_sessions = 0; 1081 mvm->fwrt.dump.conf = FW_DBG_INVALID; 1082 mvm->monitor_on = false; 1083 1084 /* keep statistics ticking */ 1085 iwl_mvm_accu_radio_stats(mvm); 1086 } 1087 1088 int __iwl_mvm_mac_start(struct iwl_mvm *mvm) 1089 { 1090 int ret; 1091 1092 lockdep_assert_held(&mvm->mutex); 1093 1094 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) { 1095 /* 1096 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART 1097 * so later code will - from now on - see that we're doing it. 1098 */ 1099 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1100 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 1101 /* Clean up some internal and mac80211 state on restart */ 1102 iwl_mvm_restart_cleanup(mvm); 1103 } 1104 ret = iwl_mvm_up(mvm); 1105 1106 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_POST_INIT, 1107 NULL); 1108 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_PERIODIC, 1109 NULL); 1110 1111 mvm->last_reset_or_resume_time_jiffies = jiffies; 1112 1113 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1114 /* Something went wrong - we need to finish some cleanup 1115 * that normally iwl_mvm_mac_restart_complete() below 1116 * would do. 1117 */ 1118 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1119 } 1120 1121 return ret; 1122 } 1123 1124 static int iwl_mvm_mac_start(struct ieee80211_hw *hw) 1125 { 1126 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1127 int ret; 1128 1129 mutex_lock(&mvm->mutex); 1130 ret = __iwl_mvm_mac_start(mvm); 1131 mutex_unlock(&mvm->mutex); 1132 1133 return ret; 1134 } 1135 1136 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm) 1137 { 1138 int ret; 1139 1140 mutex_lock(&mvm->mutex); 1141 1142 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1143 1144 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1145 if (ret) 1146 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n", 1147 ret); 1148 1149 iwl_mvm_send_recovery_cmd(mvm, ERROR_RECOVERY_END_OF_RECOVERY); 1150 1151 /* 1152 * If we have TDLS peers, remove them. We don't know the last seqno/PN 1153 * of packets the FW sent out, so we must reconnect. 1154 */ 1155 iwl_mvm_teardown_tdls_peers(mvm); 1156 1157 mutex_unlock(&mvm->mutex); 1158 } 1159 1160 static void 1161 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw, 1162 enum ieee80211_reconfig_type reconfig_type) 1163 { 1164 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1165 1166 switch (reconfig_type) { 1167 case IEEE80211_RECONFIG_TYPE_RESTART: 1168 iwl_mvm_restart_complete(mvm); 1169 break; 1170 case IEEE80211_RECONFIG_TYPE_SUSPEND: 1171 break; 1172 } 1173 } 1174 1175 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm) 1176 { 1177 lockdep_assert_held(&mvm->mutex); 1178 1179 iwl_mvm_ftm_initiator_smooth_stop(mvm); 1180 1181 /* firmware counters are obviously reset now, but we shouldn't 1182 * partially track so also clear the fw_reset_accu counters. 1183 */ 1184 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats)); 1185 1186 /* async_handlers_wk is now blocked */ 1187 1188 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, ADD_STA, 0) < 12) 1189 iwl_mvm_rm_aux_sta(mvm); 1190 1191 iwl_mvm_stop_device(mvm); 1192 1193 iwl_mvm_async_handlers_purge(mvm); 1194 /* async_handlers_list is empty and will stay empty: HW is stopped */ 1195 1196 /* 1197 * Clear IN_HW_RESTART and HW_RESTART_REQUESTED flag when stopping the 1198 * hw (as restart_complete() won't be called in this case) and mac80211 1199 * won't execute the restart. 1200 * But make sure to cleanup interfaces that have gone down before/during 1201 * HW restart was requested. 1202 */ 1203 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 1204 test_and_clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 1205 &mvm->status)) 1206 ieee80211_iterate_interfaces(mvm->hw, 0, 1207 iwl_mvm_cleanup_iterator, mvm); 1208 1209 /* We shouldn't have any UIDs still set. Loop over all the UIDs to 1210 * make sure there's nothing left there and warn if any is found. 1211 */ 1212 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 1213 int i; 1214 1215 for (i = 0; i < mvm->max_scans; i++) { 1216 if (WARN_ONCE(mvm->scan_uid_status[i], 1217 "UMAC scan UID %d status was not cleaned\n", 1218 i)) 1219 mvm->scan_uid_status[i] = 0; 1220 } 1221 } 1222 } 1223 1224 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw) 1225 { 1226 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1227 1228 flush_work(&mvm->async_handlers_wk); 1229 flush_work(&mvm->add_stream_wk); 1230 1231 /* 1232 * Lock and clear the firmware running bit here already, so that 1233 * new commands coming in elsewhere, e.g. from debugfs, will not 1234 * be able to proceed. This is important here because one of those 1235 * debugfs files causes the firmware dump to be triggered, and if we 1236 * don't stop debugfs accesses before canceling that it could be 1237 * retriggered after we flush it but before we've cleared the bit. 1238 */ 1239 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status); 1240 1241 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork); 1242 cancel_delayed_work_sync(&mvm->scan_timeout_dwork); 1243 1244 /* 1245 * The work item could be running or queued if the 1246 * ROC time event stops just as we get here. 1247 */ 1248 flush_work(&mvm->roc_done_wk); 1249 1250 mutex_lock(&mvm->mutex); 1251 __iwl_mvm_mac_stop(mvm); 1252 mutex_unlock(&mvm->mutex); 1253 1254 /* 1255 * The worker might have been waiting for the mutex, let it run and 1256 * discover that its list is now empty. 1257 */ 1258 cancel_work_sync(&mvm->async_handlers_wk); 1259 } 1260 1261 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm) 1262 { 1263 u16 i; 1264 1265 lockdep_assert_held(&mvm->mutex); 1266 1267 for (i = 0; i < NUM_PHY_CTX; i++) 1268 if (!mvm->phy_ctxts[i].ref) 1269 return &mvm->phy_ctxts[i]; 1270 1271 IWL_ERR(mvm, "No available PHY context\n"); 1272 return NULL; 1273 } 1274 1275 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1276 s16 tx_power) 1277 { 1278 int len; 1279 struct iwl_dev_tx_power_cmd cmd = { 1280 .common.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC), 1281 .common.mac_context_id = 1282 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id), 1283 .common.pwr_restriction = cpu_to_le16(8 * tx_power), 1284 }; 1285 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 1286 REDUCE_TX_POWER_CMD, 1287 IWL_FW_CMD_VER_UNKNOWN); 1288 1289 if (tx_power == IWL_DEFAULT_MAX_TX_POWER) 1290 cmd.common.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER); 1291 1292 if (cmd_ver == 6) 1293 len = sizeof(cmd.v6); 1294 else if (fw_has_api(&mvm->fw->ucode_capa, 1295 IWL_UCODE_TLV_API_REDUCE_TX_POWER)) 1296 len = sizeof(cmd.v5); 1297 else if (fw_has_capa(&mvm->fw->ucode_capa, 1298 IWL_UCODE_TLV_CAPA_TX_POWER_ACK)) 1299 len = sizeof(cmd.v4); 1300 else 1301 len = sizeof(cmd.v3); 1302 1303 /* all structs have the same common part, add it */ 1304 len += sizeof(cmd.common); 1305 1306 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd); 1307 } 1308 1309 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw, 1310 struct ieee80211_vif *vif) 1311 { 1312 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1313 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1314 int ret; 1315 1316 mutex_lock(&mvm->mutex); 1317 1318 if (vif->type == NL80211_IFTYPE_STATION) { 1319 struct iwl_mvm_sta *mvmsta; 1320 1321 mvmvif->csa_bcn_pending = false; 1322 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, 1323 mvmvif->ap_sta_id); 1324 1325 if (WARN_ON(!mvmsta)) { 1326 ret = -EIO; 1327 goto out_unlock; 1328 } 1329 1330 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false); 1331 1332 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1333 1334 if (!fw_has_capa(&mvm->fw->ucode_capa, 1335 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { 1336 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 1337 if (ret) 1338 goto out_unlock; 1339 1340 iwl_mvm_stop_session_protection(mvm, vif); 1341 } 1342 } 1343 1344 mvmvif->ps_disabled = false; 1345 1346 ret = iwl_mvm_power_update_ps(mvm); 1347 1348 out_unlock: 1349 if (mvmvif->csa_failed) 1350 ret = -EIO; 1351 mutex_unlock(&mvm->mutex); 1352 1353 return ret; 1354 } 1355 1356 static void iwl_mvm_abort_channel_switch(struct ieee80211_hw *hw, 1357 struct ieee80211_vif *vif) 1358 { 1359 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1360 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1361 struct iwl_chan_switch_te_cmd cmd = { 1362 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 1363 mvmvif->color)), 1364 .action = cpu_to_le32(FW_CTXT_ACTION_REMOVE), 1365 }; 1366 1367 IWL_DEBUG_MAC80211(mvm, "Abort CSA on mac %d\n", mvmvif->id); 1368 1369 mutex_lock(&mvm->mutex); 1370 if (!fw_has_capa(&mvm->fw->ucode_capa, 1371 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) 1372 iwl_mvm_remove_csa_period(mvm, vif); 1373 else 1374 WARN_ON(iwl_mvm_send_cmd_pdu(mvm, 1375 WIDE_ID(MAC_CONF_GROUP, 1376 CHANNEL_SWITCH_TIME_EVENT_CMD), 1377 0, sizeof(cmd), &cmd)); 1378 mvmvif->csa_failed = true; 1379 mutex_unlock(&mvm->mutex); 1380 1381 iwl_mvm_post_channel_switch(hw, vif); 1382 } 1383 1384 static void iwl_mvm_channel_switch_disconnect_wk(struct work_struct *wk) 1385 { 1386 struct iwl_mvm_vif *mvmvif; 1387 struct ieee80211_vif *vif; 1388 1389 mvmvif = container_of(wk, struct iwl_mvm_vif, csa_work.work); 1390 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 1391 1392 /* Trigger disconnect (should clear the CSA state) */ 1393 ieee80211_chswitch_done(vif, false); 1394 } 1395 1396 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, 1397 struct ieee80211_vif *vif) 1398 { 1399 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1400 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1401 int ret; 1402 1403 mvmvif->mvm = mvm; 1404 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); 1405 1406 /* 1407 * Not much to do here. The stack will not allow interface 1408 * types or combinations that we didn't advertise, so we 1409 * don't really have to check the types. 1410 */ 1411 1412 mutex_lock(&mvm->mutex); 1413 1414 /* make sure that beacon statistics don't go backwards with FW reset */ 1415 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1416 mvmvif->beacon_stats.accu_num_beacons += 1417 mvmvif->beacon_stats.num_beacons; 1418 1419 /* Allocate resources for the MAC context, and add it to the fw */ 1420 ret = iwl_mvm_mac_ctxt_init(mvm, vif); 1421 if (ret) 1422 goto out_unlock; 1423 1424 rcu_assign_pointer(mvm->vif_id_to_mac[mvmvif->id], vif); 1425 1426 /* Counting number of interfaces is needed for legacy PM */ 1427 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1428 mvm->vif_count++; 1429 1430 /* 1431 * The AP binding flow can be done only after the beacon 1432 * template is configured (which happens only in the mac80211 1433 * start_ap() flow), and adding the broadcast station can happen 1434 * only after the binding. 1435 * In addition, since modifying the MAC before adding a bcast 1436 * station is not allowed by the FW, delay the adding of MAC context to 1437 * the point where we can also add the bcast station. 1438 * In short: there's not much we can do at this point, other than 1439 * allocating resources :) 1440 */ 1441 if (vif->type == NL80211_IFTYPE_AP || 1442 vif->type == NL80211_IFTYPE_ADHOC) { 1443 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 1444 if (ret) { 1445 IWL_ERR(mvm, "Failed to allocate bcast sta\n"); 1446 goto out_release; 1447 } 1448 1449 /* 1450 * Only queue for this station is the mcast queue, 1451 * which shouldn't be in TFD mask anyway 1452 */ 1453 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta, 1454 0, vif->type, 1455 IWL_STA_MULTICAST); 1456 if (ret) 1457 goto out_release; 1458 1459 iwl_mvm_vif_dbgfs_register(mvm, vif); 1460 goto out_unlock; 1461 } 1462 1463 mvmvif->features |= hw->netdev_features; 1464 1465 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 1466 if (ret) 1467 goto out_release; 1468 1469 ret = iwl_mvm_power_update_mac(mvm); 1470 if (ret) 1471 goto out_remove_mac; 1472 1473 /* beacon filtering */ 1474 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 1475 if (ret) 1476 goto out_remove_mac; 1477 1478 if (!mvm->bf_allowed_vif && 1479 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) { 1480 mvm->bf_allowed_vif = mvmvif; 1481 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 1482 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 1483 } 1484 1485 /* 1486 * P2P_DEVICE interface does not have a channel context assigned to it, 1487 * so a dedicated PHY context is allocated to it and the corresponding 1488 * MAC context is bound to it at this stage. 1489 */ 1490 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1491 1492 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 1493 if (!mvmvif->phy_ctxt) { 1494 ret = -ENOSPC; 1495 goto out_free_bf; 1496 } 1497 1498 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 1499 ret = iwl_mvm_binding_add_vif(mvm, vif); 1500 if (ret) 1501 goto out_unref_phy; 1502 1503 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif); 1504 if (ret) 1505 goto out_unbind; 1506 1507 /* Save a pointer to p2p device vif, so it can later be used to 1508 * update the p2p device MAC when a GO is started/stopped */ 1509 mvm->p2p_device_vif = vif; 1510 } 1511 1512 iwl_mvm_tcm_add_vif(mvm, vif); 1513 INIT_DELAYED_WORK(&mvmvif->csa_work, 1514 iwl_mvm_channel_switch_disconnect_wk); 1515 1516 if (vif->type == NL80211_IFTYPE_MONITOR) 1517 mvm->monitor_on = true; 1518 1519 iwl_mvm_vif_dbgfs_register(mvm, vif); 1520 goto out_unlock; 1521 1522 out_unbind: 1523 iwl_mvm_binding_remove_vif(mvm, vif); 1524 out_unref_phy: 1525 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1526 out_free_bf: 1527 if (mvm->bf_allowed_vif == mvmvif) { 1528 mvm->bf_allowed_vif = NULL; 1529 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1530 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1531 } 1532 out_remove_mac: 1533 mvmvif->phy_ctxt = NULL; 1534 iwl_mvm_mac_ctxt_remove(mvm, vif); 1535 out_release: 1536 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1537 mvm->vif_count--; 1538 out_unlock: 1539 mutex_unlock(&mvm->mutex); 1540 1541 return ret; 1542 } 1543 1544 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm, 1545 struct ieee80211_vif *vif) 1546 { 1547 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1548 /* 1549 * Flush the ROC worker which will flush the OFFCHANNEL queue. 1550 * We assume here that all the packets sent to the OFFCHANNEL 1551 * queue are sent in ROC session. 1552 */ 1553 flush_work(&mvm->roc_done_wk); 1554 } 1555 } 1556 1557 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, 1558 struct ieee80211_vif *vif) 1559 { 1560 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1561 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1562 struct iwl_probe_resp_data *probe_data; 1563 1564 iwl_mvm_prepare_mac_removal(mvm, vif); 1565 1566 if (!(vif->type == NL80211_IFTYPE_AP || 1567 vif->type == NL80211_IFTYPE_ADHOC)) 1568 iwl_mvm_tcm_rm_vif(mvm, vif); 1569 1570 mutex_lock(&mvm->mutex); 1571 1572 probe_data = rcu_dereference_protected(mvmvif->probe_resp_data, 1573 lockdep_is_held(&mvm->mutex)); 1574 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); 1575 if (probe_data) 1576 kfree_rcu(probe_data, rcu_head); 1577 1578 if (mvm->bf_allowed_vif == mvmvif) { 1579 mvm->bf_allowed_vif = NULL; 1580 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1581 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1582 } 1583 1584 if (vif->bss_conf.ftm_responder) 1585 memset(&mvm->ftm_resp_stats, 0, sizeof(mvm->ftm_resp_stats)); 1586 1587 iwl_mvm_vif_dbgfs_clean(mvm, vif); 1588 1589 /* 1590 * For AP/GO interface, the tear down of the resources allocated to the 1591 * interface is be handled as part of the stop_ap flow. 1592 */ 1593 if (vif->type == NL80211_IFTYPE_AP || 1594 vif->type == NL80211_IFTYPE_ADHOC) { 1595 #ifdef CONFIG_NL80211_TESTMODE 1596 if (vif == mvm->noa_vif) { 1597 mvm->noa_vif = NULL; 1598 mvm->noa_duration = 0; 1599 } 1600 #endif 1601 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta); 1602 iwl_mvm_dealloc_bcast_sta(mvm, vif); 1603 goto out_release; 1604 } 1605 1606 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1607 mvm->p2p_device_vif = NULL; 1608 iwl_mvm_rm_p2p_bcast_sta(mvm, vif); 1609 iwl_mvm_binding_remove_vif(mvm, vif); 1610 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1611 mvmvif->phy_ctxt = NULL; 1612 } 1613 1614 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE) 1615 mvm->vif_count--; 1616 1617 iwl_mvm_power_update_mac(mvm); 1618 iwl_mvm_mac_ctxt_remove(mvm, vif); 1619 1620 RCU_INIT_POINTER(mvm->vif_id_to_mac[mvmvif->id], NULL); 1621 1622 if (vif->type == NL80211_IFTYPE_MONITOR) 1623 mvm->monitor_on = false; 1624 1625 out_release: 1626 mutex_unlock(&mvm->mutex); 1627 } 1628 1629 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed) 1630 { 1631 return 0; 1632 } 1633 1634 struct iwl_mvm_mc_iter_data { 1635 struct iwl_mvm *mvm; 1636 int port_id; 1637 }; 1638 1639 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac, 1640 struct ieee80211_vif *vif) 1641 { 1642 struct iwl_mvm_mc_iter_data *data = _data; 1643 struct iwl_mvm *mvm = data->mvm; 1644 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd; 1645 struct iwl_host_cmd hcmd = { 1646 .id = MCAST_FILTER_CMD, 1647 .flags = CMD_ASYNC, 1648 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1649 }; 1650 int ret, len; 1651 1652 /* if we don't have free ports, mcast frames will be dropped */ 1653 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM)) 1654 return; 1655 1656 if (vif->type != NL80211_IFTYPE_STATION || 1657 !vif->bss_conf.assoc) 1658 return; 1659 1660 cmd->port_id = data->port_id++; 1661 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 1662 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4); 1663 1664 hcmd.len[0] = len; 1665 hcmd.data[0] = cmd; 1666 1667 ret = iwl_mvm_send_cmd(mvm, &hcmd); 1668 if (ret) 1669 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret); 1670 } 1671 1672 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm) 1673 { 1674 struct iwl_mvm_mc_iter_data iter_data = { 1675 .mvm = mvm, 1676 }; 1677 int ret; 1678 1679 lockdep_assert_held(&mvm->mutex); 1680 1681 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd)) 1682 return; 1683 1684 ieee80211_iterate_active_interfaces_atomic( 1685 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1686 iwl_mvm_mc_iface_iterator, &iter_data); 1687 1688 /* 1689 * Send a (synchronous) ech command so that we wait for the 1690 * multiple asynchronous MCAST_FILTER_CMD commands sent by 1691 * the interface iterator. Otherwise, we might get here over 1692 * and over again (by userspace just sending a lot of these) 1693 * and the CPU can send them faster than the firmware can 1694 * process them. 1695 * Note that the CPU is still faster - but with this we'll 1696 * actually send fewer commands overall because the CPU will 1697 * not schedule the work in mac80211 as frequently if it's 1698 * still running when rescheduled (possibly multiple times). 1699 */ 1700 ret = iwl_mvm_send_cmd_pdu(mvm, ECHO_CMD, 0, 0, NULL); 1701 if (ret) 1702 IWL_ERR(mvm, "Failed to synchronize multicast groups update\n"); 1703 } 1704 1705 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw, 1706 struct netdev_hw_addr_list *mc_list) 1707 { 1708 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1709 struct iwl_mcast_filter_cmd *cmd; 1710 struct netdev_hw_addr *addr; 1711 int addr_count; 1712 bool pass_all; 1713 int len; 1714 1715 addr_count = netdev_hw_addr_list_count(mc_list); 1716 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES || 1717 IWL_MVM_FW_MCAST_FILTER_PASS_ALL; 1718 if (pass_all) 1719 addr_count = 0; 1720 1721 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4); 1722 cmd = kzalloc(len, GFP_ATOMIC); 1723 if (!cmd) 1724 return 0; 1725 1726 if (pass_all) { 1727 cmd->pass_all = 1; 1728 return (u64)(uintptr_t)cmd; 1729 } 1730 1731 netdev_hw_addr_list_for_each(addr, mc_list) { 1732 #if defined(__linux__) 1733 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n", 1734 cmd->count, addr->addr); 1735 #elif defined(__FreeBSD__) 1736 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %6D\n", 1737 cmd->count, addr->addr, ":"); 1738 #endif 1739 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN], 1740 addr->addr, ETH_ALEN); 1741 cmd->count++; 1742 } 1743 1744 return (u64)(uintptr_t)cmd; 1745 } 1746 1747 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw, 1748 unsigned int changed_flags, 1749 unsigned int *total_flags, 1750 u64 multicast) 1751 { 1752 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1753 struct iwl_mcast_filter_cmd *cmd = (void *)(uintptr_t)multicast; 1754 1755 mutex_lock(&mvm->mutex); 1756 1757 /* replace previous configuration */ 1758 kfree(mvm->mcast_filter_cmd); 1759 mvm->mcast_filter_cmd = cmd; 1760 1761 if (!cmd) 1762 goto out; 1763 1764 if (changed_flags & FIF_ALLMULTI) 1765 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI); 1766 1767 if (cmd->pass_all) 1768 cmd->count = 0; 1769 1770 iwl_mvm_recalc_multicast(mvm); 1771 out: 1772 mutex_unlock(&mvm->mutex); 1773 *total_flags = 0; 1774 } 1775 1776 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw, 1777 struct ieee80211_vif *vif, 1778 unsigned int filter_flags, 1779 unsigned int changed_flags) 1780 { 1781 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1782 1783 /* We support only filter for probe requests */ 1784 if (!(changed_flags & FIF_PROBE_REQ)) 1785 return; 1786 1787 /* Supported only for p2p client interfaces */ 1788 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1789 !vif->p2p) 1790 return; 1791 1792 mutex_lock(&mvm->mutex); 1793 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1794 mutex_unlock(&mvm->mutex); 1795 } 1796 1797 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 1798 struct iwl_bcast_iter_data { 1799 struct iwl_mvm *mvm; 1800 struct iwl_bcast_filter_cmd *cmd; 1801 u8 current_filter; 1802 }; 1803 1804 static void 1805 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif, 1806 const struct iwl_fw_bcast_filter *in_filter, 1807 struct iwl_fw_bcast_filter *out_filter) 1808 { 1809 struct iwl_fw_bcast_filter_attr *attr; 1810 int i; 1811 1812 memcpy(out_filter, in_filter, sizeof(*out_filter)); 1813 1814 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) { 1815 attr = &out_filter->attrs[i]; 1816 1817 if (!attr->mask) 1818 break; 1819 1820 switch (attr->reserved1) { 1821 case cpu_to_le16(BC_FILTER_MAGIC_IP): 1822 if (vif->bss_conf.arp_addr_cnt != 1) { 1823 attr->mask = 0; 1824 continue; 1825 } 1826 1827 attr->val = vif->bss_conf.arp_addr_list[0]; 1828 break; 1829 case cpu_to_le16(BC_FILTER_MAGIC_MAC): 1830 attr->val = *(__be32 *)&vif->addr[2]; 1831 break; 1832 default: 1833 break; 1834 } 1835 attr->reserved1 = 0; 1836 out_filter->num_attrs++; 1837 } 1838 } 1839 1840 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac, 1841 struct ieee80211_vif *vif) 1842 { 1843 struct iwl_bcast_iter_data *data = _data; 1844 struct iwl_mvm *mvm = data->mvm; 1845 struct iwl_bcast_filter_cmd *cmd = data->cmd; 1846 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1847 struct iwl_fw_bcast_mac *bcast_mac; 1848 int i; 1849 1850 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs))) 1851 return; 1852 1853 bcast_mac = &cmd->macs[mvmvif->id]; 1854 1855 /* 1856 * enable filtering only for associated stations, but not for P2P 1857 * Clients 1858 */ 1859 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p || 1860 !vif->bss_conf.assoc) 1861 return; 1862 1863 bcast_mac->default_discard = 1; 1864 1865 /* copy all configured filters */ 1866 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) { 1867 /* 1868 * Make sure we don't exceed our filters limit. 1869 * if there is still a valid filter to be configured, 1870 * be on the safe side and just allow bcast for this mac. 1871 */ 1872 if (WARN_ON_ONCE(data->current_filter >= 1873 ARRAY_SIZE(cmd->filters))) { 1874 bcast_mac->default_discard = 0; 1875 bcast_mac->attached_filters = 0; 1876 break; 1877 } 1878 1879 iwl_mvm_set_bcast_filter(vif, 1880 &mvm->bcast_filters[i], 1881 &cmd->filters[data->current_filter]); 1882 1883 /* skip current filter if it contains no attributes */ 1884 if (!cmd->filters[data->current_filter].num_attrs) 1885 continue; 1886 1887 /* attach the filter to current mac */ 1888 bcast_mac->attached_filters |= 1889 cpu_to_le16(BIT(data->current_filter)); 1890 1891 data->current_filter++; 1892 } 1893 } 1894 1895 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm, 1896 struct iwl_bcast_filter_cmd *cmd) 1897 { 1898 struct iwl_bcast_iter_data iter_data = { 1899 .mvm = mvm, 1900 .cmd = cmd, 1901 }; 1902 1903 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL) 1904 return false; 1905 1906 memset(cmd, 0, sizeof(*cmd)); 1907 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters); 1908 cmd->max_macs = ARRAY_SIZE(cmd->macs); 1909 1910 #ifdef CONFIG_IWLWIFI_DEBUGFS 1911 /* use debugfs filters/macs if override is configured */ 1912 if (mvm->dbgfs_bcast_filtering.override) { 1913 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters, 1914 sizeof(cmd->filters)); 1915 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs, 1916 sizeof(cmd->macs)); 1917 return true; 1918 } 1919 #endif 1920 1921 /* if no filters are configured, do nothing */ 1922 if (!mvm->bcast_filters) 1923 return false; 1924 1925 /* configure and attach these filters for each associated sta vif */ 1926 ieee80211_iterate_active_interfaces( 1927 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1928 iwl_mvm_bcast_filter_iterator, &iter_data); 1929 1930 return true; 1931 } 1932 1933 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1934 { 1935 struct iwl_bcast_filter_cmd cmd; 1936 1937 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING)) 1938 return 0; 1939 1940 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) 1941 return 0; 1942 1943 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0, 1944 sizeof(cmd), &cmd); 1945 } 1946 #else 1947 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1948 { 1949 return 0; 1950 } 1951 #endif 1952 1953 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm, 1954 struct ieee80211_vif *vif) 1955 { 1956 struct iwl_mu_group_mgmt_cmd cmd = {}; 1957 1958 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership, 1959 WLAN_MEMBERSHIP_LEN); 1960 memcpy(cmd.user_position, vif->bss_conf.mu_group.position, 1961 WLAN_USER_POSITION_LEN); 1962 1963 return iwl_mvm_send_cmd_pdu(mvm, 1964 WIDE_ID(DATA_PATH_GROUP, 1965 UPDATE_MU_GROUPS_CMD), 1966 0, sizeof(cmd), &cmd); 1967 } 1968 1969 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac, 1970 struct ieee80211_vif *vif) 1971 { 1972 if (vif->mu_mimo_owner) { 1973 struct iwl_mu_group_mgmt_notif *notif = _data; 1974 1975 /* 1976 * MU-MIMO Group Id action frame is little endian. We treat 1977 * the data received from firmware as if it came from the 1978 * action frame, so no conversion is needed. 1979 */ 1980 ieee80211_update_mu_groups(vif, 1981 (u8 *)¬if->membership_status, 1982 (u8 *)¬if->user_position); 1983 } 1984 } 1985 1986 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm, 1987 struct iwl_rx_cmd_buffer *rxb) 1988 { 1989 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1990 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data; 1991 1992 ieee80211_iterate_active_interfaces_atomic( 1993 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1994 iwl_mvm_mu_mimo_iface_iterator, notif); 1995 } 1996 1997 static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit) 1998 { 1999 u8 byte_num = ppe_pos_bit / 8; 2000 u8 bit_num = ppe_pos_bit % 8; 2001 u8 residue_bits; 2002 u8 res; 2003 2004 if (bit_num <= 5) 2005 return (ppe[byte_num] >> bit_num) & 2006 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1); 2007 2008 /* 2009 * If bit_num > 5, we have to combine bits with next byte. 2010 * Calculate how many bits we need to take from current byte (called 2011 * here "residue_bits"), and add them to bits from next byte. 2012 */ 2013 2014 residue_bits = 8 - bit_num; 2015 2016 res = (ppe[byte_num + 1] & 2017 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE - residue_bits) - 1)) << 2018 residue_bits; 2019 res += (ppe[byte_num] >> bit_num) & (BIT(residue_bits) - 1); 2020 2021 return res; 2022 } 2023 2024 static void iwl_mvm_cfg_he_sta(struct iwl_mvm *mvm, 2025 struct ieee80211_vif *vif, u8 sta_id) 2026 { 2027 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2028 struct iwl_he_sta_context_cmd sta_ctxt_cmd = { 2029 .sta_id = sta_id, 2030 .tid_limit = IWL_MAX_TID_COUNT, 2031 .bss_color = vif->bss_conf.he_bss_color.color, 2032 .htc_trig_based_pkt_ext = vif->bss_conf.htc_trig_based_pkt_ext, 2033 .frame_time_rts_th = 2034 cpu_to_le16(vif->bss_conf.frame_time_rts_th), 2035 }; 2036 int size = fw_has_api(&mvm->fw->ucode_capa, 2037 IWL_UCODE_TLV_API_MBSSID_HE) ? 2038 sizeof(sta_ctxt_cmd) : 2039 sizeof(struct iwl_he_sta_context_cmd_v1); 2040 struct ieee80211_sta *sta; 2041 u32 flags; 2042 int i; 2043 const struct ieee80211_sta_he_cap *own_he_cap = NULL; 2044 struct ieee80211_chanctx_conf *chanctx_conf; 2045 const struct ieee80211_supported_band *sband; 2046 2047 rcu_read_lock(); 2048 2049 chanctx_conf = rcu_dereference(vif->chanctx_conf); 2050 if (WARN_ON(!chanctx_conf)) { 2051 rcu_read_unlock(); 2052 return; 2053 } 2054 2055 sband = mvm->hw->wiphy->bands[chanctx_conf->def.chan->band]; 2056 own_he_cap = ieee80211_get_he_iftype_cap(sband, 2057 ieee80211_vif_type_p2p(vif)); 2058 2059 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_ctxt_cmd.sta_id]); 2060 if (IS_ERR_OR_NULL(sta)) { 2061 rcu_read_unlock(); 2062 WARN(1, "Can't find STA to configure HE\n"); 2063 return; 2064 } 2065 2066 if (!sta->he_cap.has_he) { 2067 rcu_read_unlock(); 2068 return; 2069 } 2070 2071 flags = 0; 2072 2073 /* Block 26-tone RU OFDMA transmissions */ 2074 if (mvmvif->he_ru_2mhz_block) 2075 flags |= STA_CTXT_HE_RU_2MHZ_BLOCK; 2076 2077 /* HTC flags */ 2078 if (sta->he_cap.he_cap_elem.mac_cap_info[0] & 2079 IEEE80211_HE_MAC_CAP0_HTC_HE) 2080 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_SUPPORT); 2081 if ((sta->he_cap.he_cap_elem.mac_cap_info[1] & 2082 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION) || 2083 (sta->he_cap.he_cap_elem.mac_cap_info[2] & 2084 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION)) { 2085 u8 link_adap = 2086 ((sta->he_cap.he_cap_elem.mac_cap_info[2] & 2087 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION) << 1) + 2088 (sta->he_cap.he_cap_elem.mac_cap_info[1] & 2089 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION); 2090 2091 if (link_adap == 2) 2092 sta_ctxt_cmd.htc_flags |= 2093 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_UNSOLICITED); 2094 else if (link_adap == 3) 2095 sta_ctxt_cmd.htc_flags |= 2096 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_BOTH); 2097 } 2098 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_BSR) 2099 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BSR_SUPP); 2100 if (sta->he_cap.he_cap_elem.mac_cap_info[3] & 2101 IEEE80211_HE_MAC_CAP3_OMI_CONTROL) 2102 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_OMI_SUPP); 2103 if (sta->he_cap.he_cap_elem.mac_cap_info[4] & IEEE80211_HE_MAC_CAP4_BQR) 2104 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BQR_SUPP); 2105 2106 /* 2107 * Initialize the PPE thresholds to "None" (7), as described in Table 2108 * 9-262ac of 80211.ax/D3.0. 2109 */ 2110 memset(&sta_ctxt_cmd.pkt_ext, 7, sizeof(sta_ctxt_cmd.pkt_ext)); 2111 2112 /* If PPE Thresholds exist, parse them into a FW-familiar format. */ 2113 if (sta->he_cap.he_cap_elem.phy_cap_info[6] & 2114 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) { 2115 u8 nss = (sta->he_cap.ppe_thres[0] & 2116 IEEE80211_PPE_THRES_NSS_MASK) + 1; 2117 u8 ru_index_bitmap = 2118 (sta->he_cap.ppe_thres[0] & 2119 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK) >> 2120 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS; 2121 u8 *ppe = &sta->he_cap.ppe_thres[0]; 2122 u8 ppe_pos_bit = 7; /* Starting after PPE header */ 2123 2124 /* 2125 * FW currently supports only nss == MAX_HE_SUPP_NSS 2126 * 2127 * If nss > MAX: we can ignore values we don't support 2128 * If nss < MAX: we can set zeros in other streams 2129 */ 2130 if (nss > MAX_HE_SUPP_NSS) { 2131 IWL_INFO(mvm, "Got NSS = %d - trimming to %d\n", nss, 2132 MAX_HE_SUPP_NSS); 2133 nss = MAX_HE_SUPP_NSS; 2134 } 2135 2136 for (i = 0; i < nss; i++) { 2137 u8 ru_index_tmp = ru_index_bitmap << 1; 2138 u8 bw; 2139 2140 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; bw++) { 2141 ru_index_tmp >>= 1; 2142 if (!(ru_index_tmp & 1)) 2143 continue; 2144 2145 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][1] = 2146 iwl_mvm_he_get_ppe_val(ppe, 2147 ppe_pos_bit); 2148 ppe_pos_bit += 2149 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2150 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][0] = 2151 iwl_mvm_he_get_ppe_val(ppe, 2152 ppe_pos_bit); 2153 ppe_pos_bit += 2154 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2155 } 2156 } 2157 2158 flags |= STA_CTXT_HE_PACKET_EXT; 2159 } else if ((sta->he_cap.he_cap_elem.phy_cap_info[9] & 2160 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) != 2161 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_RESERVED) { 2162 int low_th = -1; 2163 int high_th = -1; 2164 2165 /* Take the PPE thresholds from the nominal padding info */ 2166 switch (sta->he_cap.he_cap_elem.phy_cap_info[9] & 2167 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) { 2168 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_0US: 2169 low_th = IWL_HE_PKT_EXT_NONE; 2170 high_th = IWL_HE_PKT_EXT_NONE; 2171 break; 2172 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_8US: 2173 low_th = IWL_HE_PKT_EXT_BPSK; 2174 high_th = IWL_HE_PKT_EXT_NONE; 2175 break; 2176 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_16US: 2177 low_th = IWL_HE_PKT_EXT_NONE; 2178 high_th = IWL_HE_PKT_EXT_BPSK; 2179 break; 2180 } 2181 2182 /* Set the PPE thresholds accordingly */ 2183 if (low_th >= 0 && high_th >= 0) { 2184 struct iwl_he_pkt_ext *pkt_ext = 2185 (struct iwl_he_pkt_ext *)&sta_ctxt_cmd.pkt_ext; 2186 2187 for (i = 0; i < MAX_HE_SUPP_NSS; i++) { 2188 u8 bw; 2189 2190 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; 2191 bw++) { 2192 pkt_ext->pkt_ext_qam_th[i][bw][0] = 2193 low_th; 2194 pkt_ext->pkt_ext_qam_th[i][bw][1] = 2195 high_th; 2196 } 2197 } 2198 2199 flags |= STA_CTXT_HE_PACKET_EXT; 2200 } 2201 } 2202 2203 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & 2204 IEEE80211_HE_MAC_CAP2_32BIT_BA_BITMAP) 2205 flags |= STA_CTXT_HE_32BIT_BA_BITMAP; 2206 2207 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & 2208 IEEE80211_HE_MAC_CAP2_ACK_EN) 2209 flags |= STA_CTXT_HE_ACK_ENABLED; 2210 2211 rcu_read_unlock(); 2212 2213 /* Mark MU EDCA as enabled, unless none detected on some AC */ 2214 flags |= STA_CTXT_HE_MU_EDCA_CW; 2215 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 2216 struct ieee80211_he_mu_edca_param_ac_rec *mu_edca = 2217 &mvmvif->queue_params[i].mu_edca_param_rec; 2218 u8 ac = iwl_mvm_mac80211_ac_to_ucode_ac(i); 2219 2220 if (!mvmvif->queue_params[i].mu_edca) { 2221 flags &= ~STA_CTXT_HE_MU_EDCA_CW; 2222 break; 2223 } 2224 2225 sta_ctxt_cmd.trig_based_txf[ac].cwmin = 2226 cpu_to_le16(mu_edca->ecw_min_max & 0xf); 2227 sta_ctxt_cmd.trig_based_txf[ac].cwmax = 2228 cpu_to_le16((mu_edca->ecw_min_max & 0xf0) >> 4); 2229 sta_ctxt_cmd.trig_based_txf[ac].aifsn = 2230 cpu_to_le16(mu_edca->aifsn); 2231 sta_ctxt_cmd.trig_based_txf[ac].mu_time = 2232 cpu_to_le16(mu_edca->mu_edca_timer); 2233 } 2234 2235 2236 if (vif->bss_conf.uora_exists) { 2237 flags |= STA_CTXT_HE_TRIG_RND_ALLOC; 2238 2239 sta_ctxt_cmd.rand_alloc_ecwmin = 2240 vif->bss_conf.uora_ocw_range & 0x7; 2241 sta_ctxt_cmd.rand_alloc_ecwmax = 2242 (vif->bss_conf.uora_ocw_range >> 3) & 0x7; 2243 } 2244 2245 if (own_he_cap && !(own_he_cap->he_cap_elem.mac_cap_info[2] & 2246 IEEE80211_HE_MAC_CAP2_ACK_EN)) 2247 flags |= STA_CTXT_HE_NIC_NOT_ACK_ENABLED; 2248 2249 if (vif->bss_conf.nontransmitted) { 2250 flags |= STA_CTXT_HE_REF_BSSID_VALID; 2251 ether_addr_copy(sta_ctxt_cmd.ref_bssid_addr, 2252 vif->bss_conf.transmitter_bssid); 2253 sta_ctxt_cmd.max_bssid_indicator = 2254 vif->bss_conf.bssid_indicator; 2255 sta_ctxt_cmd.bssid_index = vif->bss_conf.bssid_index; 2256 sta_ctxt_cmd.ema_ap = vif->bss_conf.ema_ap; 2257 sta_ctxt_cmd.profile_periodicity = 2258 vif->bss_conf.profile_periodicity; 2259 } 2260 2261 sta_ctxt_cmd.flags = cpu_to_le32(flags); 2262 2263 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(STA_HE_CTXT_CMD, 2264 DATA_PATH_GROUP, 0), 2265 0, size, &sta_ctxt_cmd)) 2266 IWL_ERR(mvm, "Failed to config FW to work HE!\n"); 2267 } 2268 2269 static void iwl_mvm_protect_assoc(struct iwl_mvm *mvm, 2270 struct ieee80211_vif *vif, 2271 u32 duration_override) 2272 { 2273 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS; 2274 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS; 2275 2276 if (duration_override > duration) 2277 duration = duration_override; 2278 2279 /* Try really hard to protect the session and hear a beacon 2280 * The new session protection command allows us to protect the 2281 * session for a much longer time since the firmware will internally 2282 * create two events: a 300TU one with a very high priority that 2283 * won't be fragmented which should be enough for 99% of the cases, 2284 * and another one (which we configure here to be 900TU long) which 2285 * will have a slightly lower priority, but more importantly, can be 2286 * fragmented so that it'll allow other activities to run. 2287 */ 2288 if (fw_has_capa(&mvm->fw->ucode_capa, 2289 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) 2290 iwl_mvm_schedule_session_protection(mvm, vif, 900, 2291 min_duration, false); 2292 else 2293 iwl_mvm_protect_session(mvm, vif, duration, 2294 min_duration, 500, false); 2295 } 2296 2297 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, 2298 struct ieee80211_vif *vif, 2299 struct ieee80211_bss_conf *bss_conf, 2300 u32 changes) 2301 { 2302 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2303 int ret; 2304 2305 /* 2306 * Re-calculate the tsf id, as the leader-follower relations depend 2307 * on the beacon interval, which was not known when the station 2308 * interface was added. 2309 */ 2310 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) { 2311 if (vif->bss_conf.he_support && 2312 !iwlwifi_mod_params.disable_11ax) 2313 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id); 2314 2315 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2316 } 2317 2318 /* Update MU EDCA params */ 2319 if (changes & BSS_CHANGED_QOS && mvmvif->associated && 2320 bss_conf->assoc && vif->bss_conf.he_support && 2321 !iwlwifi_mod_params.disable_11ax) 2322 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id); 2323 2324 /* 2325 * If we're not associated yet, take the (new) BSSID before associating 2326 * so the firmware knows. If we're already associated, then use the old 2327 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC 2328 * branch for disassociation below. 2329 */ 2330 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated) 2331 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2332 2333 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid); 2334 if (ret) 2335 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2336 2337 /* after sending it once, adopt mac80211 data */ 2338 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2339 mvmvif->associated = bss_conf->assoc; 2340 2341 if (changes & BSS_CHANGED_ASSOC) { 2342 if (bss_conf->assoc) { 2343 /* clear statistics to get clean beacon counter */ 2344 iwl_mvm_request_statistics(mvm, true); 2345 memset(&mvmvif->beacon_stats, 0, 2346 sizeof(mvmvif->beacon_stats)); 2347 2348 /* add quota for this interface */ 2349 ret = iwl_mvm_update_quotas(mvm, true, NULL); 2350 if (ret) { 2351 IWL_ERR(mvm, "failed to update quotas\n"); 2352 return; 2353 } 2354 2355 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2356 &mvm->status) && 2357 !fw_has_capa(&mvm->fw->ucode_capa, 2358 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) { 2359 /* 2360 * If we're restarting then the firmware will 2361 * obviously have lost synchronisation with 2362 * the AP. It will attempt to synchronise by 2363 * itself, but we can make it more reliable by 2364 * scheduling a session protection time event. 2365 * 2366 * The firmware needs to receive a beacon to 2367 * catch up with synchronisation, use 110% of 2368 * the beacon interval. 2369 * 2370 * Set a large maximum delay to allow for more 2371 * than a single interface. 2372 * 2373 * For new firmware versions, rely on the 2374 * firmware. This is relevant for DCM scenarios 2375 * only anyway. 2376 */ 2377 u32 dur = (11 * vif->bss_conf.beacon_int) / 10; 2378 iwl_mvm_protect_session(mvm, vif, dur, dur, 2379 5 * dur, false); 2380 } else if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2381 &mvm->status) && 2382 !vif->bss_conf.dtim_period) { 2383 /* 2384 * If we're not restarting and still haven't 2385 * heard a beacon (dtim period unknown) then 2386 * make sure we still have enough minimum time 2387 * remaining in the time event, since the auth 2388 * might actually have taken quite a while 2389 * (especially for SAE) and so the remaining 2390 * time could be small without us having heard 2391 * a beacon yet. 2392 */ 2393 iwl_mvm_protect_assoc(mvm, vif, 0); 2394 } 2395 2396 iwl_mvm_sf_update(mvm, vif, false); 2397 iwl_mvm_power_vif_assoc(mvm, vif); 2398 if (vif->p2p) { 2399 iwl_mvm_update_smps(mvm, vif, 2400 IWL_MVM_SMPS_REQ_PROT, 2401 IEEE80211_SMPS_DYNAMIC); 2402 } 2403 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 2404 /* 2405 * If update fails - SF might be running in associated 2406 * mode while disassociated - which is forbidden. 2407 */ 2408 ret = iwl_mvm_sf_update(mvm, vif, false); 2409 WARN_ONCE(ret && 2410 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 2411 &mvm->status), 2412 "Failed to update SF upon disassociation\n"); 2413 2414 /* 2415 * If we get an assert during the connection (after the 2416 * station has been added, but before the vif is set 2417 * to associated), mac80211 will re-add the station and 2418 * then configure the vif. Since the vif is not 2419 * associated, we would remove the station here and 2420 * this would fail the recovery. 2421 */ 2422 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2423 &mvm->status)) { 2424 /* 2425 * Remove AP station now that 2426 * the MAC is unassoc 2427 */ 2428 ret = iwl_mvm_rm_sta_id(mvm, vif, 2429 mvmvif->ap_sta_id); 2430 if (ret) 2431 IWL_ERR(mvm, 2432 "failed to remove AP station\n"); 2433 2434 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 2435 } 2436 2437 /* remove quota for this interface */ 2438 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2439 if (ret) 2440 IWL_ERR(mvm, "failed to update quotas\n"); 2441 2442 /* this will take the cleared BSSID from bss_conf */ 2443 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2444 if (ret) 2445 IWL_ERR(mvm, 2446 "failed to update MAC %pM (clear after unassoc)\n", 2447 vif->addr); 2448 } 2449 2450 /* 2451 * The firmware tracks the MU-MIMO group on its own. 2452 * However, on HW restart we should restore this data. 2453 */ 2454 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2455 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) { 2456 ret = iwl_mvm_update_mu_groups(mvm, vif); 2457 if (ret) 2458 IWL_ERR(mvm, 2459 "failed to update VHT MU_MIMO groups\n"); 2460 } 2461 2462 iwl_mvm_recalc_multicast(mvm); 2463 iwl_mvm_configure_bcast_filter(mvm); 2464 2465 /* reset rssi values */ 2466 mvmvif->bf_data.ave_beacon_signal = 0; 2467 2468 iwl_mvm_bt_coex_vif_change(mvm); 2469 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, 2470 IEEE80211_SMPS_AUTOMATIC); 2471 if (fw_has_capa(&mvm->fw->ucode_capa, 2472 IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2473 iwl_mvm_config_scan(mvm); 2474 } 2475 2476 if (changes & BSS_CHANGED_BEACON_INFO) { 2477 /* 2478 * We received a beacon from the associated AP so 2479 * remove the session protection. 2480 * A firmware with the new API will remove it automatically. 2481 */ 2482 if (!fw_has_capa(&mvm->fw->ucode_capa, 2483 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) 2484 iwl_mvm_stop_session_protection(mvm, vif); 2485 2486 iwl_mvm_sf_update(mvm, vif, false); 2487 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2488 } 2489 2490 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS | 2491 /* 2492 * Send power command on every beacon change, 2493 * because we may have not enabled beacon abort yet. 2494 */ 2495 BSS_CHANGED_BEACON_INFO)) { 2496 ret = iwl_mvm_power_update_mac(mvm); 2497 if (ret) 2498 IWL_ERR(mvm, "failed to update power mode\n"); 2499 } 2500 2501 if (changes & BSS_CHANGED_CQM) { 2502 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n"); 2503 /* reset cqm events tracking */ 2504 mvmvif->bf_data.last_cqm_event = 0; 2505 if (mvmvif->bf_data.bf_enabled) { 2506 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 2507 if (ret) 2508 IWL_ERR(mvm, 2509 "failed to update CQM thresholds\n"); 2510 } 2511 } 2512 2513 if (changes & BSS_CHANGED_ARP_FILTER) { 2514 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n"); 2515 iwl_mvm_configure_bcast_filter(mvm); 2516 } 2517 2518 if (changes & BSS_CHANGED_BANDWIDTH) 2519 iwl_mvm_apply_fw_smps_request(vif); 2520 } 2521 2522 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw, 2523 struct ieee80211_vif *vif) 2524 { 2525 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2526 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2527 int ret, i; 2528 2529 mutex_lock(&mvm->mutex); 2530 2531 /* Send the beacon template */ 2532 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif); 2533 if (ret) 2534 goto out_unlock; 2535 2536 /* 2537 * Re-calculate the tsf id, as the leader-follower relations depend on 2538 * the beacon interval, which was not known when the AP interface 2539 * was added. 2540 */ 2541 if (vif->type == NL80211_IFTYPE_AP) 2542 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2543 2544 mvmvif->ap_assoc_sta_count = 0; 2545 2546 /* Add the mac context */ 2547 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 2548 if (ret) 2549 goto out_unlock; 2550 2551 /* Perform the binding */ 2552 ret = iwl_mvm_binding_add_vif(mvm, vif); 2553 if (ret) 2554 goto out_remove; 2555 2556 /* 2557 * This is not very nice, but the simplest: 2558 * For older FWs adding the mcast sta before the bcast station may 2559 * cause assert 0x2b00. 2560 * This is fixed in later FW so make the order of removal depend on 2561 * the TLV 2562 */ 2563 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2564 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2565 if (ret) 2566 goto out_unbind; 2567 /* 2568 * Send the bcast station. At this stage the TBTT and DTIM time 2569 * events are added and applied to the scheduler 2570 */ 2571 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2572 if (ret) { 2573 iwl_mvm_rm_mcast_sta(mvm, vif); 2574 goto out_unbind; 2575 } 2576 } else { 2577 /* 2578 * Send the bcast station. At this stage the TBTT and DTIM time 2579 * events are added and applied to the scheduler 2580 */ 2581 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2582 if (ret) 2583 goto out_unbind; 2584 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2585 if (ret) { 2586 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2587 goto out_unbind; 2588 } 2589 } 2590 2591 /* must be set before quota calculations */ 2592 mvmvif->ap_ibss_active = true; 2593 2594 /* send all the early keys to the device now */ 2595 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) { 2596 struct ieee80211_key_conf *key = mvmvif->ap_early_keys[i]; 2597 2598 if (!key) 2599 continue; 2600 2601 mvmvif->ap_early_keys[i] = NULL; 2602 2603 ret = __iwl_mvm_mac_set_key(hw, SET_KEY, vif, NULL, key); 2604 if (ret) 2605 goto out_quota_failed; 2606 } 2607 2608 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) { 2609 iwl_mvm_vif_set_low_latency(mvmvif, true, 2610 LOW_LATENCY_VIF_TYPE); 2611 iwl_mvm_send_low_latency_cmd(mvm, true, mvmvif->id); 2612 } 2613 2614 /* power updated needs to be done before quotas */ 2615 iwl_mvm_power_update_mac(mvm); 2616 2617 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2618 if (ret) 2619 goto out_quota_failed; 2620 2621 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2622 if (vif->p2p && mvm->p2p_device_vif) 2623 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2624 2625 iwl_mvm_bt_coex_vif_change(mvm); 2626 2627 /* we don't support TDLS during DCM */ 2628 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2629 iwl_mvm_teardown_tdls_peers(mvm); 2630 2631 iwl_mvm_ftm_restart_responder(mvm, vif); 2632 2633 goto out_unlock; 2634 2635 out_quota_failed: 2636 iwl_mvm_power_update_mac(mvm); 2637 mvmvif->ap_ibss_active = false; 2638 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2639 iwl_mvm_rm_mcast_sta(mvm, vif); 2640 out_unbind: 2641 iwl_mvm_binding_remove_vif(mvm, vif); 2642 out_remove: 2643 iwl_mvm_mac_ctxt_remove(mvm, vif); 2644 out_unlock: 2645 mutex_unlock(&mvm->mutex); 2646 return ret; 2647 } 2648 2649 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw, 2650 struct ieee80211_vif *vif) 2651 { 2652 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2653 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2654 2655 iwl_mvm_prepare_mac_removal(mvm, vif); 2656 2657 mutex_lock(&mvm->mutex); 2658 2659 /* Handle AP stop while in CSA */ 2660 if (rcu_access_pointer(mvm->csa_vif) == vif) { 2661 iwl_mvm_remove_time_event(mvm, mvmvif, 2662 &mvmvif->time_event_data); 2663 RCU_INIT_POINTER(mvm->csa_vif, NULL); 2664 mvmvif->csa_countdown = false; 2665 } 2666 2667 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) { 2668 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 2669 mvm->csa_tx_block_bcn_timeout = 0; 2670 } 2671 2672 mvmvif->ap_ibss_active = false; 2673 mvm->ap_last_beacon_gp2 = 0; 2674 2675 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) { 2676 iwl_mvm_vif_set_low_latency(mvmvif, false, 2677 LOW_LATENCY_VIF_TYPE); 2678 iwl_mvm_send_low_latency_cmd(mvm, false, mvmvif->id); 2679 } 2680 2681 iwl_mvm_bt_coex_vif_change(mvm); 2682 2683 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2684 if (vif->p2p && mvm->p2p_device_vif) 2685 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2686 2687 iwl_mvm_update_quotas(mvm, false, NULL); 2688 2689 iwl_mvm_ftm_responder_clear(mvm, vif); 2690 2691 /* 2692 * This is not very nice, but the simplest: 2693 * For older FWs removing the mcast sta before the bcast station may 2694 * cause assert 0x2b00. 2695 * This is fixed in later FW (which will stop beaconing when removing 2696 * bcast station). 2697 * So make the order of removal depend on the TLV 2698 */ 2699 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2700 iwl_mvm_rm_mcast_sta(mvm, vif); 2701 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2702 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2703 iwl_mvm_rm_mcast_sta(mvm, vif); 2704 iwl_mvm_binding_remove_vif(mvm, vif); 2705 2706 iwl_mvm_power_update_mac(mvm); 2707 2708 iwl_mvm_mac_ctxt_remove(mvm, vif); 2709 2710 mutex_unlock(&mvm->mutex); 2711 } 2712 2713 static void 2714 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm, 2715 struct ieee80211_vif *vif, 2716 struct ieee80211_bss_conf *bss_conf, 2717 u32 changes) 2718 { 2719 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2720 2721 /* Changes will be applied when the AP/IBSS is started */ 2722 if (!mvmvif->ap_ibss_active) 2723 return; 2724 2725 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT | 2726 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) && 2727 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL)) 2728 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2729 2730 /* Need to send a new beacon template to the FW */ 2731 if (changes & BSS_CHANGED_BEACON && 2732 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif)) 2733 IWL_WARN(mvm, "Failed updating beacon data\n"); 2734 2735 if (changes & BSS_CHANGED_FTM_RESPONDER) { 2736 int ret = iwl_mvm_ftm_start_responder(mvm, vif); 2737 2738 if (ret) 2739 IWL_WARN(mvm, "Failed to enable FTM responder (%d)\n", 2740 ret); 2741 } 2742 2743 } 2744 2745 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, 2746 struct ieee80211_vif *vif, 2747 struct ieee80211_bss_conf *bss_conf, 2748 u32 changes) 2749 { 2750 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2751 2752 mutex_lock(&mvm->mutex); 2753 2754 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle) 2755 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2756 2757 switch (vif->type) { 2758 case NL80211_IFTYPE_STATION: 2759 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes); 2760 break; 2761 case NL80211_IFTYPE_AP: 2762 case NL80211_IFTYPE_ADHOC: 2763 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes); 2764 break; 2765 case NL80211_IFTYPE_MONITOR: 2766 if (changes & BSS_CHANGED_MU_GROUPS) 2767 iwl_mvm_update_mu_groups(mvm, vif); 2768 break; 2769 default: 2770 /* shouldn't happen */ 2771 WARN_ON_ONCE(1); 2772 } 2773 2774 if (changes & BSS_CHANGED_TXPOWER) { 2775 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d dBm\n", 2776 bss_conf->txpower); 2777 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2778 } 2779 2780 mutex_unlock(&mvm->mutex); 2781 } 2782 2783 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, 2784 struct ieee80211_vif *vif, 2785 struct ieee80211_scan_request *hw_req) 2786 { 2787 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2788 int ret; 2789 2790 if (hw_req->req.n_channels == 0 || 2791 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels) 2792 return -EINVAL; 2793 2794 mutex_lock(&mvm->mutex); 2795 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies); 2796 mutex_unlock(&mvm->mutex); 2797 2798 return ret; 2799 } 2800 2801 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw, 2802 struct ieee80211_vif *vif) 2803 { 2804 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2805 2806 mutex_lock(&mvm->mutex); 2807 2808 /* Due to a race condition, it's possible that mac80211 asks 2809 * us to stop a hw_scan when it's already stopped. This can 2810 * happen, for instance, if we stopped the scan ourselves, 2811 * called ieee80211_scan_completed() and the userspace called 2812 * cancel scan scan before ieee80211_scan_work() could run. 2813 * To handle that, simply return if the scan is not running. 2814 */ 2815 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) 2816 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2817 2818 mutex_unlock(&mvm->mutex); 2819 } 2820 2821 static void 2822 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw, 2823 struct ieee80211_sta *sta, u16 tids, 2824 int num_frames, 2825 enum ieee80211_frame_release_type reason, 2826 bool more_data) 2827 { 2828 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2829 2830 /* Called when we need to transmit (a) frame(s) from mac80211 */ 2831 2832 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2833 tids, more_data, false); 2834 } 2835 2836 static void 2837 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw, 2838 struct ieee80211_sta *sta, u16 tids, 2839 int num_frames, 2840 enum ieee80211_frame_release_type reason, 2841 bool more_data) 2842 { 2843 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2844 2845 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */ 2846 2847 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2848 tids, more_data, true); 2849 } 2850 2851 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2852 enum sta_notify_cmd cmd, 2853 struct ieee80211_sta *sta) 2854 { 2855 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2856 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2857 unsigned long txqs = 0, tids = 0; 2858 int tid; 2859 2860 /* 2861 * If we have TVQM then we get too high queue numbers - luckily 2862 * we really shouldn't get here with that because such hardware 2863 * should have firmware supporting buffer station offload. 2864 */ 2865 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 2866 return; 2867 2868 spin_lock_bh(&mvmsta->lock); 2869 for (tid = 0; tid < ARRAY_SIZE(mvmsta->tid_data); tid++) { 2870 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2871 2872 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE) 2873 continue; 2874 2875 __set_bit(tid_data->txq_id, &txqs); 2876 2877 if (iwl_mvm_tid_queued(mvm, tid_data) == 0) 2878 continue; 2879 2880 __set_bit(tid, &tids); 2881 } 2882 2883 switch (cmd) { 2884 case STA_NOTIFY_SLEEP: 2885 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT) 2886 ieee80211_sta_set_buffered(sta, tid, true); 2887 2888 if (txqs) 2889 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true); 2890 /* 2891 * The fw updates the STA to be asleep. Tx packets on the Tx 2892 * queues to this station will not be transmitted. The fw will 2893 * send a Tx response with TX_STATUS_FAIL_DEST_PS. 2894 */ 2895 break; 2896 case STA_NOTIFY_AWAKE: 2897 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA)) 2898 break; 2899 2900 if (txqs) 2901 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false); 2902 iwl_mvm_sta_modify_ps_wake(mvm, sta); 2903 break; 2904 default: 2905 break; 2906 } 2907 spin_unlock_bh(&mvmsta->lock); 2908 } 2909 2910 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2911 struct ieee80211_vif *vif, 2912 enum sta_notify_cmd cmd, 2913 struct ieee80211_sta *sta) 2914 { 2915 __iwl_mvm_mac_sta_notify(hw, cmd, sta); 2916 } 2917 2918 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 2919 { 2920 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2921 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data; 2922 struct ieee80211_sta *sta; 2923 struct iwl_mvm_sta *mvmsta; 2924 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE); 2925 2926 if (WARN_ON(notif->sta_id >= mvm->fw->ucode_capa.num_stations)) 2927 return; 2928 2929 rcu_read_lock(); 2930 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]); 2931 if (WARN_ON(IS_ERR_OR_NULL(sta))) { 2932 rcu_read_unlock(); 2933 return; 2934 } 2935 2936 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2937 2938 if (!mvmsta->vif || 2939 mvmsta->vif->type != NL80211_IFTYPE_AP) { 2940 rcu_read_unlock(); 2941 return; 2942 } 2943 2944 if (mvmsta->sleeping != sleeping) { 2945 mvmsta->sleeping = sleeping; 2946 __iwl_mvm_mac_sta_notify(mvm->hw, 2947 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, 2948 sta); 2949 ieee80211_sta_ps_transition(sta, sleeping); 2950 } 2951 2952 if (sleeping) { 2953 switch (notif->type) { 2954 case IWL_MVM_PM_EVENT_AWAKE: 2955 case IWL_MVM_PM_EVENT_ASLEEP: 2956 break; 2957 case IWL_MVM_PM_EVENT_UAPSD: 2958 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS); 2959 break; 2960 case IWL_MVM_PM_EVENT_PS_POLL: 2961 ieee80211_sta_pspoll(sta); 2962 break; 2963 default: 2964 break; 2965 } 2966 } 2967 2968 rcu_read_unlock(); 2969 } 2970 2971 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw, 2972 struct ieee80211_vif *vif, 2973 struct ieee80211_sta *sta) 2974 { 2975 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2976 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2977 2978 /* 2979 * This is called before mac80211 does RCU synchronisation, 2980 * so here we already invalidate our internal RCU-protected 2981 * station pointer. The rest of the code will thus no longer 2982 * be able to find the station this way, and we don't rely 2983 * on further RCU synchronisation after the sta_state() 2984 * callback deleted the station. 2985 */ 2986 mutex_lock(&mvm->mutex); 2987 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id])) 2988 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 2989 ERR_PTR(-ENOENT)); 2990 2991 mutex_unlock(&mvm->mutex); 2992 } 2993 2994 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2995 const u8 *bssid) 2996 { 2997 int i; 2998 2999 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 3000 struct iwl_mvm_tcm_mac *mdata; 3001 3002 mdata = &mvm->tcm.data[iwl_mvm_vif_from_mac80211(vif)->id]; 3003 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate); 3004 mdata->opened_rx_ba_sessions = false; 3005 } 3006 3007 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT)) 3008 return; 3009 3010 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) { 3011 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 3012 return; 3013 } 3014 3015 if (!vif->p2p && 3016 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) { 3017 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 3018 return; 3019 } 3020 3021 for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) { 3022 if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) { 3023 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 3024 return; 3025 } 3026 } 3027 3028 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 3029 } 3030 3031 static void 3032 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm, 3033 struct ieee80211_vif *vif, u8 *peer_addr, 3034 enum nl80211_tdls_operation action) 3035 { 3036 struct iwl_fw_dbg_trigger_tlv *trig; 3037 struct iwl_fw_dbg_trigger_tdls *tdls_trig; 3038 3039 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 3040 FW_DBG_TRIGGER_TDLS); 3041 if (!trig) 3042 return; 3043 3044 tdls_trig = (void *)trig->data; 3045 3046 if (!(tdls_trig->action_bitmap & BIT(action))) 3047 return; 3048 3049 if (tdls_trig->peer_mode && 3050 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0) 3051 return; 3052 3053 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 3054 "TDLS event occurred, peer %pM, action %d", 3055 peer_addr, action); 3056 } 3057 3058 struct iwl_mvm_he_obss_narrow_bw_ru_data { 3059 bool tolerated; 3060 }; 3061 3062 static void iwl_mvm_check_he_obss_narrow_bw_ru_iter(struct wiphy *wiphy, 3063 struct cfg80211_bss *bss, 3064 void *_data) 3065 { 3066 struct iwl_mvm_he_obss_narrow_bw_ru_data *data = _data; 3067 const struct cfg80211_bss_ies *ies; 3068 const struct element *elem; 3069 3070 rcu_read_lock(); 3071 ies = rcu_dereference(bss->ies); 3072 elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, ies->data, 3073 ies->len); 3074 3075 if (!elem || elem->datalen < 10 || 3076 !(elem->data[10] & 3077 WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT)) { 3078 data->tolerated = false; 3079 } 3080 rcu_read_unlock(); 3081 } 3082 3083 static void iwl_mvm_check_he_obss_narrow_bw_ru(struct ieee80211_hw *hw, 3084 struct ieee80211_vif *vif) 3085 { 3086 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3087 struct iwl_mvm_he_obss_narrow_bw_ru_data iter_data = { 3088 .tolerated = true, 3089 }; 3090 3091 if (!(vif->bss_conf.chandef.chan->flags & IEEE80211_CHAN_RADAR)) { 3092 mvmvif->he_ru_2mhz_block = false; 3093 return; 3094 } 3095 3096 cfg80211_bss_iter(hw->wiphy, &vif->bss_conf.chandef, 3097 iwl_mvm_check_he_obss_narrow_bw_ru_iter, 3098 &iter_data); 3099 3100 /* 3101 * If there is at least one AP on radar channel that cannot 3102 * tolerate 26-tone RU UL OFDMA transmissions using HE TB PPDU. 3103 */ 3104 mvmvif->he_ru_2mhz_block = !iter_data.tolerated; 3105 } 3106 3107 static void iwl_mvm_reset_cca_40mhz_workaround(struct iwl_mvm *mvm, 3108 struct ieee80211_vif *vif) 3109 { 3110 struct ieee80211_supported_band *sband; 3111 const struct ieee80211_sta_he_cap *he_cap; 3112 3113 if (vif->type != NL80211_IFTYPE_STATION) 3114 return; 3115 3116 if (!mvm->cca_40mhz_workaround) 3117 return; 3118 3119 /* decrement and check that we reached zero */ 3120 mvm->cca_40mhz_workaround--; 3121 if (mvm->cca_40mhz_workaround) 3122 return; 3123 3124 sband = mvm->hw->wiphy->bands[NL80211_BAND_2GHZ]; 3125 3126 sband->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; 3127 3128 he_cap = ieee80211_get_he_iftype_cap(sband, 3129 ieee80211_vif_type_p2p(vif)); 3130 3131 if (he_cap) { 3132 /* we know that ours is writable */ 3133 struct ieee80211_sta_he_cap *he = (void *)(uintptr_t)he_cap; 3134 3135 he->he_cap_elem.phy_cap_info[0] |= 3136 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G; 3137 } 3138 } 3139 3140 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, 3141 struct ieee80211_vif *vif, 3142 struct ieee80211_sta *sta, 3143 enum ieee80211_sta_state old_state, 3144 enum ieee80211_sta_state new_state) 3145 { 3146 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3147 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3148 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3149 int ret; 3150 3151 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n", 3152 sta->addr, old_state, new_state); 3153 3154 /* this would be a mac80211 bug ... but don't crash */ 3155 if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) 3156 return test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status) ? 0 : -EINVAL; 3157 3158 /* 3159 * If we are in a STA removal flow and in DQA mode: 3160 * 3161 * This is after the sync_rcu part, so the queues have already been 3162 * flushed. No more TXs on their way in mac80211's path, and no more in 3163 * the queues. 3164 * Also, we won't be getting any new TX frames for this station. 3165 * What we might have are deferred TX frames that need to be taken care 3166 * of. 3167 * 3168 * Drop any still-queued deferred-frame before removing the STA, and 3169 * make sure the worker is no longer handling frames for this STA. 3170 */ 3171 if (old_state == IEEE80211_STA_NONE && 3172 new_state == IEEE80211_STA_NOTEXIST) { 3173 flush_work(&mvm->add_stream_wk); 3174 3175 /* 3176 * No need to make sure deferred TX indication is off since the 3177 * worker will already remove it if it was on 3178 */ 3179 3180 /* 3181 * Additionally, reset the 40 MHz capability if we disconnected 3182 * from the AP now. 3183 */ 3184 iwl_mvm_reset_cca_40mhz_workaround(mvm, vif); 3185 } 3186 3187 mutex_lock(&mvm->mutex); 3188 /* track whether or not the station is associated */ 3189 mvm_sta->sta_state = new_state; 3190 3191 if (old_state == IEEE80211_STA_NOTEXIST && 3192 new_state == IEEE80211_STA_NONE) { 3193 /* 3194 * Firmware bug - it'll crash if the beacon interval is less 3195 * than 16. We can't avoid connecting at all, so refuse the 3196 * station state change, this will cause mac80211 to abandon 3197 * attempts to connect to this AP, and eventually wpa_s will 3198 * blocklist the AP... 3199 */ 3200 if (vif->type == NL80211_IFTYPE_STATION && 3201 vif->bss_conf.beacon_int < 16) { 3202 IWL_ERR(mvm, 3203 "AP %pM beacon interval is %d, refusing due to firmware bug!\n", 3204 sta->addr, vif->bss_conf.beacon_int); 3205 ret = -EINVAL; 3206 goto out_unlock; 3207 } 3208 3209 if (vif->type == NL80211_IFTYPE_STATION) 3210 vif->bss_conf.he_support = sta->he_cap.has_he; 3211 3212 if (sta->tdls && 3213 (vif->p2p || 3214 iwl_mvm_tdls_sta_count(mvm, NULL) == 3215 IWL_MVM_TDLS_STA_COUNT || 3216 iwl_mvm_phy_ctx_count(mvm) > 1)) { 3217 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n"); 3218 ret = -EBUSY; 3219 goto out_unlock; 3220 } 3221 3222 ret = iwl_mvm_add_sta(mvm, vif, sta); 3223 if (sta->tdls && ret == 0) { 3224 iwl_mvm_recalc_tdls_state(mvm, vif, true); 3225 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3226 NL80211_TDLS_SETUP); 3227 } 3228 3229 sta->max_rc_amsdu_len = 1; 3230 } else if (old_state == IEEE80211_STA_NONE && 3231 new_state == IEEE80211_STA_AUTH) { 3232 /* 3233 * EBS may be disabled due to previous failures reported by FW. 3234 * Reset EBS status here assuming environment has been changed. 3235 */ 3236 mvm->last_ebs_successful = true; 3237 iwl_mvm_check_uapsd(mvm, vif, sta->addr); 3238 ret = 0; 3239 } else if (old_state == IEEE80211_STA_AUTH && 3240 new_state == IEEE80211_STA_ASSOC) { 3241 if (vif->type == NL80211_IFTYPE_AP) { 3242 vif->bss_conf.he_support = sta->he_cap.has_he; 3243 mvmvif->ap_assoc_sta_count++; 3244 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3245 if (vif->bss_conf.he_support && 3246 !iwlwifi_mod_params.disable_11ax) 3247 iwl_mvm_cfg_he_sta(mvm, vif, mvm_sta->sta_id); 3248 } else if (vif->type == NL80211_IFTYPE_STATION) { 3249 vif->bss_conf.he_support = sta->he_cap.has_he; 3250 3251 mvmvif->he_ru_2mhz_block = false; 3252 if (sta->he_cap.has_he) 3253 iwl_mvm_check_he_obss_narrow_bw_ru(hw, vif); 3254 3255 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3256 } 3257 3258 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3259 false); 3260 ret = iwl_mvm_update_sta(mvm, vif, sta); 3261 } else if (old_state == IEEE80211_STA_ASSOC && 3262 new_state == IEEE80211_STA_AUTHORIZED) { 3263 ret = 0; 3264 3265 /* we don't support TDLS during DCM */ 3266 if (iwl_mvm_phy_ctx_count(mvm) > 1) 3267 iwl_mvm_teardown_tdls_peers(mvm); 3268 3269 if (sta->tdls) { 3270 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3271 NL80211_TDLS_ENABLE_LINK); 3272 } else { 3273 /* enable beacon filtering */ 3274 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 3275 3276 mvmvif->authorized = 1; 3277 3278 /* 3279 * Now that the station is authorized, i.e., keys were already 3280 * installed, need to indicate to the FW that 3281 * multicast data frames can be forwarded to the driver 3282 */ 3283 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3284 } 3285 3286 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3287 true); 3288 } else if (old_state == IEEE80211_STA_AUTHORIZED && 3289 new_state == IEEE80211_STA_ASSOC) { 3290 if (!sta->tdls) { 3291 /* Multicast data frames are no longer allowed */ 3292 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3293 3294 /* 3295 * Set this after the above iwl_mvm_mac_ctxt_changed() 3296 * to avoid sending high prio again for a little time. 3297 */ 3298 mvmvif->authorized = 0; 3299 3300 /* disable beacon filtering */ 3301 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 3302 WARN_ON(ret && 3303 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 3304 &mvm->status)); 3305 } 3306 ret = 0; 3307 } else if (old_state == IEEE80211_STA_ASSOC && 3308 new_state == IEEE80211_STA_AUTH) { 3309 if (vif->type == NL80211_IFTYPE_AP) { 3310 mvmvif->ap_assoc_sta_count--; 3311 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3312 } else if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls) 3313 iwl_mvm_stop_session_protection(mvm, vif); 3314 ret = 0; 3315 } else if (old_state == IEEE80211_STA_AUTH && 3316 new_state == IEEE80211_STA_NONE) { 3317 ret = 0; 3318 } else if (old_state == IEEE80211_STA_NONE && 3319 new_state == IEEE80211_STA_NOTEXIST) { 3320 if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls) 3321 iwl_mvm_stop_session_protection(mvm, vif); 3322 ret = iwl_mvm_rm_sta(mvm, vif, sta); 3323 if (sta->tdls) { 3324 iwl_mvm_recalc_tdls_state(mvm, vif, false); 3325 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3326 NL80211_TDLS_DISABLE_LINK); 3327 } 3328 3329 if (unlikely(ret && 3330 test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 3331 &mvm->status))) 3332 ret = 0; 3333 } else { 3334 ret = -EIO; 3335 } 3336 out_unlock: 3337 mutex_unlock(&mvm->mutex); 3338 3339 if (sta->tdls && ret == 0) { 3340 if (old_state == IEEE80211_STA_NOTEXIST && 3341 new_state == IEEE80211_STA_NONE) 3342 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID); 3343 else if (old_state == IEEE80211_STA_NONE && 3344 new_state == IEEE80211_STA_NOTEXIST) 3345 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID); 3346 } 3347 3348 return ret; 3349 } 3350 3351 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 3352 { 3353 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3354 3355 mvm->rts_threshold = value; 3356 3357 return 0; 3358 } 3359 3360 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw, 3361 struct ieee80211_vif *vif, 3362 struct ieee80211_sta *sta, u32 changed) 3363 { 3364 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3365 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3366 3367 if (changed & (IEEE80211_RC_BW_CHANGED | 3368 IEEE80211_RC_SUPP_RATES_CHANGED | 3369 IEEE80211_RC_NSS_CHANGED)) 3370 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3371 true); 3372 3373 if (vif->type == NL80211_IFTYPE_STATION && 3374 changed & IEEE80211_RC_NSS_CHANGED) 3375 iwl_mvm_sf_update(mvm, vif, false); 3376 } 3377 3378 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw, 3379 struct ieee80211_vif *vif, u16 ac, 3380 const struct ieee80211_tx_queue_params *params) 3381 { 3382 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3383 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3384 3385 mvmvif->queue_params[ac] = *params; 3386 3387 /* 3388 * No need to update right away, we'll get BSS_CHANGED_QOS 3389 * The exception is P2P_DEVICE interface which needs immediate update. 3390 */ 3391 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 3392 int ret; 3393 3394 mutex_lock(&mvm->mutex); 3395 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3396 mutex_unlock(&mvm->mutex); 3397 return ret; 3398 } 3399 return 0; 3400 } 3401 3402 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, 3403 struct ieee80211_vif *vif, 3404 struct ieee80211_prep_tx_info *info) 3405 { 3406 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3407 3408 mutex_lock(&mvm->mutex); 3409 iwl_mvm_protect_assoc(mvm, vif, info->duration); 3410 mutex_unlock(&mvm->mutex); 3411 } 3412 3413 static void iwl_mvm_mac_mgd_complete_tx(struct ieee80211_hw *hw, 3414 struct ieee80211_vif *vif, 3415 struct ieee80211_prep_tx_info *info) 3416 { 3417 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3418 3419 /* for successful cases (auth/assoc), don't cancel session protection */ 3420 if (info->success) 3421 return; 3422 3423 mutex_lock(&mvm->mutex); 3424 iwl_mvm_stop_session_protection(mvm, vif); 3425 mutex_unlock(&mvm->mutex); 3426 } 3427 3428 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw, 3429 struct ieee80211_vif *vif, 3430 struct cfg80211_sched_scan_request *req, 3431 struct ieee80211_scan_ies *ies) 3432 { 3433 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3434 3435 int ret; 3436 3437 mutex_lock(&mvm->mutex); 3438 3439 if (!vif->bss_conf.idle) { 3440 ret = -EBUSY; 3441 goto out; 3442 } 3443 3444 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED); 3445 3446 out: 3447 mutex_unlock(&mvm->mutex); 3448 return ret; 3449 } 3450 3451 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw, 3452 struct ieee80211_vif *vif) 3453 { 3454 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3455 int ret; 3456 3457 mutex_lock(&mvm->mutex); 3458 3459 /* Due to a race condition, it's possible that mac80211 asks 3460 * us to stop a sched_scan when it's already stopped. This 3461 * can happen, for instance, if we stopped the scan ourselves, 3462 * called ieee80211_sched_scan_stopped() and the userspace called 3463 * stop sched scan scan before ieee80211_sched_scan_stopped_work() 3464 * could run. To handle this, simply return if the scan is 3465 * not running. 3466 */ 3467 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) { 3468 mutex_unlock(&mvm->mutex); 3469 return 0; 3470 } 3471 3472 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false); 3473 mutex_unlock(&mvm->mutex); 3474 iwl_mvm_wait_for_async_handlers(mvm); 3475 3476 return ret; 3477 } 3478 3479 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 3480 enum set_key_cmd cmd, 3481 struct ieee80211_vif *vif, 3482 struct ieee80211_sta *sta, 3483 struct ieee80211_key_conf *key) 3484 { 3485 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3486 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3487 struct iwl_mvm_sta *mvmsta; 3488 struct iwl_mvm_key_pn *ptk_pn; 3489 int keyidx = key->keyidx; 3490 int ret, i; 3491 u8 key_offset; 3492 3493 switch (key->cipher) { 3494 case WLAN_CIPHER_SUITE_TKIP: 3495 if (!mvm->trans->trans_cfg->gen2) { 3496 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; 3497 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3498 } else if (vif->type == NL80211_IFTYPE_STATION) { 3499 key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE; 3500 } else { 3501 IWL_DEBUG_MAC80211(mvm, "Use SW encryption for TKIP\n"); 3502 return -EOPNOTSUPP; 3503 } 3504 break; 3505 case WLAN_CIPHER_SUITE_CCMP: 3506 case WLAN_CIPHER_SUITE_GCMP: 3507 case WLAN_CIPHER_SUITE_GCMP_256: 3508 if (!iwl_mvm_has_new_tx_api(mvm)) 3509 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3510 break; 3511 case WLAN_CIPHER_SUITE_AES_CMAC: 3512 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3513 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3514 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE)); 3515 break; 3516 case WLAN_CIPHER_SUITE_WEP40: 3517 case WLAN_CIPHER_SUITE_WEP104: 3518 if (vif->type == NL80211_IFTYPE_STATION) 3519 break; 3520 if (iwl_mvm_has_new_tx_api(mvm)) 3521 return -EOPNOTSUPP; 3522 /* support HW crypto on TX */ 3523 return 0; 3524 default: 3525 /* currently FW supports only one optional cipher scheme */ 3526 if (hw->n_cipher_schemes && 3527 hw->cipher_schemes->cipher == key->cipher) 3528 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3529 else 3530 return -EOPNOTSUPP; 3531 } 3532 3533 switch (cmd) { 3534 case SET_KEY: 3535 if (keyidx == 6 || keyidx == 7) 3536 rcu_assign_pointer(mvmvif->bcn_prot.keys[keyidx - 6], 3537 key); 3538 3539 if ((vif->type == NL80211_IFTYPE_ADHOC || 3540 vif->type == NL80211_IFTYPE_AP) && !sta) { 3541 /* 3542 * GTK on AP interface is a TX-only key, return 0; 3543 * on IBSS they're per-station and because we're lazy 3544 * we don't support them for RX, so do the same. 3545 * CMAC/GMAC in AP/IBSS modes must be done in software. 3546 */ 3547 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3548 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3549 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3550 ret = -EOPNOTSUPP; 3551 break; 3552 } 3553 3554 if (key->cipher != WLAN_CIPHER_SUITE_GCMP && 3555 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 && 3556 !iwl_mvm_has_new_tx_api(mvm)) { 3557 key->hw_key_idx = STA_KEY_IDX_INVALID; 3558 ret = 0; 3559 break; 3560 } 3561 3562 if (!mvmvif->ap_ibss_active) { 3563 for (i = 0; 3564 i < ARRAY_SIZE(mvmvif->ap_early_keys); 3565 i++) { 3566 if (!mvmvif->ap_early_keys[i]) { 3567 mvmvif->ap_early_keys[i] = key; 3568 break; 3569 } 3570 } 3571 3572 if (i >= ARRAY_SIZE(mvmvif->ap_early_keys)) 3573 ret = -ENOSPC; 3574 else 3575 ret = 0; 3576 3577 break; 3578 } 3579 } 3580 3581 /* During FW restart, in order to restore the state as it was, 3582 * don't try to reprogram keys we previously failed for. 3583 */ 3584 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3585 key->hw_key_idx == STA_KEY_IDX_INVALID) { 3586 IWL_DEBUG_MAC80211(mvm, 3587 "skip invalid idx key programming during restart\n"); 3588 ret = 0; 3589 break; 3590 } 3591 3592 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3593 sta && iwl_mvm_has_new_rx_api(mvm) && 3594 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3595 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3596 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3597 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3598 struct ieee80211_key_seq seq; 3599 int tid, q; 3600 3601 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3602 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx])); 3603 ptk_pn = kzalloc(struct_size(ptk_pn, q, 3604 mvm->trans->num_rx_queues), 3605 GFP_KERNEL); 3606 if (!ptk_pn) { 3607 ret = -ENOMEM; 3608 break; 3609 } 3610 3611 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 3612 ieee80211_get_key_rx_seq(key, tid, &seq); 3613 for (q = 0; q < mvm->trans->num_rx_queues; q++) 3614 memcpy(ptk_pn->q[q].pn[tid], 3615 seq.ccmp.pn, 3616 IEEE80211_CCMP_PN_LEN); 3617 } 3618 3619 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn); 3620 } 3621 3622 /* in HW restart reuse the index, otherwise request a new one */ 3623 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 3624 key_offset = key->hw_key_idx; 3625 else 3626 key_offset = STA_KEY_IDX_INVALID; 3627 3628 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); 3629 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset); 3630 if (ret) { 3631 IWL_WARN(mvm, "set key failed\n"); 3632 key->hw_key_idx = STA_KEY_IDX_INVALID; 3633 /* 3634 * can't add key for RX, but we don't need it 3635 * in the device for TX so still return 0, 3636 * unless we have new TX API where we cannot 3637 * put key material into the TX_CMD 3638 */ 3639 if (iwl_mvm_has_new_tx_api(mvm)) 3640 ret = -EOPNOTSUPP; 3641 else 3642 ret = 0; 3643 } 3644 3645 break; 3646 case DISABLE_KEY: 3647 if (keyidx == 6 || keyidx == 7) 3648 RCU_INIT_POINTER(mvmvif->bcn_prot.keys[keyidx - 6], 3649 NULL); 3650 3651 ret = -ENOENT; 3652 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) { 3653 if (mvmvif->ap_early_keys[i] == key) { 3654 mvmvif->ap_early_keys[i] = NULL; 3655 ret = 0; 3656 } 3657 } 3658 3659 /* found in pending list - don't do anything else */ 3660 if (ret == 0) 3661 break; 3662 3663 if (key->hw_key_idx == STA_KEY_IDX_INVALID) { 3664 ret = 0; 3665 break; 3666 } 3667 3668 if (sta && iwl_mvm_has_new_rx_api(mvm) && 3669 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3670 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3671 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3672 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3673 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3674 ptk_pn = rcu_dereference_protected( 3675 mvmsta->ptk_pn[keyidx], 3676 lockdep_is_held(&mvm->mutex)); 3677 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL); 3678 if (ptk_pn) 3679 kfree_rcu(ptk_pn, rcu_head); 3680 } 3681 3682 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n"); 3683 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key); 3684 break; 3685 default: 3686 ret = -EINVAL; 3687 } 3688 3689 return ret; 3690 } 3691 3692 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 3693 enum set_key_cmd cmd, 3694 struct ieee80211_vif *vif, 3695 struct ieee80211_sta *sta, 3696 struct ieee80211_key_conf *key) 3697 { 3698 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3699 int ret; 3700 3701 mutex_lock(&mvm->mutex); 3702 ret = __iwl_mvm_mac_set_key(hw, cmd, vif, sta, key); 3703 mutex_unlock(&mvm->mutex); 3704 3705 return ret; 3706 } 3707 3708 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, 3709 struct ieee80211_vif *vif, 3710 struct ieee80211_key_conf *keyconf, 3711 struct ieee80211_sta *sta, 3712 u32 iv32, u16 *phase1key) 3713 { 3714 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3715 3716 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID) 3717 return; 3718 3719 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key); 3720 } 3721 3722 3723 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait, 3724 struct iwl_rx_packet *pkt, void *data) 3725 { 3726 struct iwl_mvm *mvm = 3727 container_of(notif_wait, struct iwl_mvm, notif_wait); 3728 struct iwl_hs20_roc_res *resp; 3729 int resp_len = iwl_rx_packet_payload_len(pkt); 3730 struct iwl_mvm_time_event_data *te_data = data; 3731 3732 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD)) 3733 return true; 3734 3735 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 3736 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n"); 3737 return true; 3738 } 3739 3740 resp = (void *)pkt->data; 3741 3742 IWL_DEBUG_TE(mvm, 3743 "Aux ROC: Received response from ucode: status=%d uid=%d\n", 3744 resp->status, resp->event_unique_id); 3745 3746 te_data->uid = le32_to_cpu(resp->event_unique_id); 3747 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n", 3748 te_data->uid); 3749 3750 spin_lock_bh(&mvm->time_event_lock); 3751 list_add_tail(&te_data->list, &mvm->aux_roc_te_list); 3752 spin_unlock_bh(&mvm->time_event_lock); 3753 3754 return true; 3755 } 3756 3757 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100) 3758 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200) 3759 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600) 3760 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20) 3761 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10) 3762 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm, 3763 struct ieee80211_channel *channel, 3764 struct ieee80211_vif *vif, 3765 int duration) 3766 { 3767 int res; 3768 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3769 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data; 3770 static const u16 time_event_response[] = { HOT_SPOT_CMD }; 3771 struct iwl_notification_wait wait_time_event; 3772 u32 dtim_interval = vif->bss_conf.dtim_period * 3773 vif->bss_conf.beacon_int; 3774 u32 req_dur, delay; 3775 struct iwl_hs20_roc_req aux_roc_req = { 3776 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 3777 .id_and_color = 3778 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)), 3779 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id), 3780 }; 3781 struct iwl_hs20_roc_req_tail *tail = iwl_mvm_chan_info_cmd_tail(mvm, 3782 &aux_roc_req.channel_info); 3783 u16 len = sizeof(aux_roc_req) - iwl_mvm_chan_info_padding(mvm); 3784 3785 /* Set the channel info data */ 3786 iwl_mvm_set_chan_info(mvm, &aux_roc_req.channel_info, channel->hw_value, 3787 iwl_mvm_phy_band_from_nl80211(channel->band), 3788 PHY_VHT_CHANNEL_MODE20, 3789 0); 3790 3791 /* Set the time and duration */ 3792 tail->apply_time = cpu_to_le32(iwl_mvm_get_systime(mvm)); 3793 3794 delay = AUX_ROC_MIN_DELAY; 3795 req_dur = MSEC_TO_TU(duration); 3796 3797 /* 3798 * If we are associated we want the delay time to be at least one 3799 * dtim interval so that the FW can wait until after the DTIM and 3800 * then start the time event, this will potentially allow us to 3801 * remain off-channel for the max duration. 3802 * Since we want to use almost a whole dtim interval we would also 3803 * like the delay to be for 2-3 dtim intervals, in case there are 3804 * other time events with higher priority. 3805 */ 3806 if (vif->bss_conf.assoc) { 3807 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY); 3808 /* We cannot remain off-channel longer than the DTIM interval */ 3809 if (dtim_interval <= req_dur) { 3810 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER; 3811 if (req_dur <= AUX_ROC_MIN_DURATION) 3812 req_dur = dtim_interval - 3813 AUX_ROC_MIN_SAFETY_BUFFER; 3814 } 3815 } 3816 3817 tail->duration = cpu_to_le32(req_dur); 3818 tail->apply_time_max_delay = cpu_to_le32(delay); 3819 3820 IWL_DEBUG_TE(mvm, 3821 "ROC: Requesting to remain on channel %u for %ums\n", 3822 channel->hw_value, req_dur); 3823 IWL_DEBUG_TE(mvm, 3824 "\t(requested = %ums, max_delay = %ums, dtim_interval = %ums)\n", 3825 duration, delay, dtim_interval); 3826 3827 /* Set the node address */ 3828 memcpy(tail->node_addr, vif->addr, ETH_ALEN); 3829 3830 lockdep_assert_held(&mvm->mutex); 3831 3832 spin_lock_bh(&mvm->time_event_lock); 3833 3834 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) { 3835 spin_unlock_bh(&mvm->time_event_lock); 3836 return -EIO; 3837 } 3838 3839 te_data->vif = vif; 3840 te_data->duration = duration; 3841 te_data->id = HOT_SPOT_CMD; 3842 3843 spin_unlock_bh(&mvm->time_event_lock); 3844 3845 /* 3846 * Use a notification wait, which really just processes the 3847 * command response and doesn't wait for anything, in order 3848 * to be able to process the response and get the UID inside 3849 * the RX path. Using CMD_WANT_SKB doesn't work because it 3850 * stores the buffer and then wakes up this thread, by which 3851 * time another notification (that the time event started) 3852 * might already be processed unsuccessfully. 3853 */ 3854 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event, 3855 time_event_response, 3856 ARRAY_SIZE(time_event_response), 3857 iwl_mvm_rx_aux_roc, te_data); 3858 3859 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, len, 3860 &aux_roc_req); 3861 3862 if (res) { 3863 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res); 3864 iwl_remove_notification(&mvm->notif_wait, &wait_time_event); 3865 goto out_clear_te; 3866 } 3867 3868 /* No need to wait for anything, so just pass 1 (0 isn't valid) */ 3869 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1); 3870 /* should never fail */ 3871 WARN_ON_ONCE(res); 3872 3873 if (res) { 3874 out_clear_te: 3875 spin_lock_bh(&mvm->time_event_lock); 3876 iwl_mvm_te_clear_data(mvm, te_data); 3877 spin_unlock_bh(&mvm->time_event_lock); 3878 } 3879 3880 return res; 3881 } 3882 3883 static int iwl_mvm_roc(struct ieee80211_hw *hw, 3884 struct ieee80211_vif *vif, 3885 struct ieee80211_channel *channel, 3886 int duration, 3887 enum ieee80211_roc_type type) 3888 { 3889 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3890 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3891 struct cfg80211_chan_def chandef; 3892 struct iwl_mvm_phy_ctxt *phy_ctxt; 3893 bool band_change_removal; 3894 int ret, i; 3895 3896 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value, 3897 duration, type); 3898 3899 /* 3900 * Flush the done work, just in case it's still pending, so that 3901 * the work it does can complete and we can accept new frames. 3902 */ 3903 flush_work(&mvm->roc_done_wk); 3904 3905 mutex_lock(&mvm->mutex); 3906 3907 switch (vif->type) { 3908 case NL80211_IFTYPE_STATION: 3909 if (fw_has_capa(&mvm->fw->ucode_capa, 3910 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) { 3911 /* Use aux roc framework (HS20) */ 3912 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 3913 ADD_STA, 0) >= 12) { 3914 u32 lmac_id; 3915 3916 lmac_id = iwl_mvm_get_lmac_id(mvm->fw, 3917 channel->band); 3918 ret = iwl_mvm_add_aux_sta(mvm, lmac_id); 3919 if (WARN(ret, 3920 "Failed to allocate aux station")) 3921 goto out_unlock; 3922 } 3923 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel, 3924 vif, duration); 3925 goto out_unlock; 3926 } 3927 IWL_ERR(mvm, "hotspot not supported\n"); 3928 ret = -EINVAL; 3929 goto out_unlock; 3930 case NL80211_IFTYPE_P2P_DEVICE: 3931 /* handle below */ 3932 break; 3933 default: 3934 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type); 3935 ret = -EINVAL; 3936 goto out_unlock; 3937 } 3938 3939 for (i = 0; i < NUM_PHY_CTX; i++) { 3940 phy_ctxt = &mvm->phy_ctxts[i]; 3941 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt) 3942 continue; 3943 3944 if (phy_ctxt->ref && channel == phy_ctxt->channel) { 3945 /* 3946 * Unbind the P2P_DEVICE from the current PHY context, 3947 * and if the PHY context is not used remove it. 3948 */ 3949 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3950 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3951 goto out_unlock; 3952 3953 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3954 3955 /* Bind the P2P_DEVICE to the current PHY Context */ 3956 mvmvif->phy_ctxt = phy_ctxt; 3957 3958 ret = iwl_mvm_binding_add_vif(mvm, vif); 3959 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3960 goto out_unlock; 3961 3962 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3963 goto schedule_time_event; 3964 } 3965 } 3966 3967 /* Need to update the PHY context only if the ROC channel changed */ 3968 if (channel == mvmvif->phy_ctxt->channel) 3969 goto schedule_time_event; 3970 3971 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT); 3972 3973 /* 3974 * Check if the remain-on-channel is on a different band and that 3975 * requires context removal, see iwl_mvm_phy_ctxt_changed(). If 3976 * so, we'll need to release and then re-configure here, since we 3977 * must not remove a PHY context that's part of a binding. 3978 */ 3979 band_change_removal = 3980 fw_has_capa(&mvm->fw->ucode_capa, 3981 IWL_UCODE_TLV_CAPA_BINDING_CDB_SUPPORT) && 3982 mvmvif->phy_ctxt->channel->band != chandef.chan->band; 3983 3984 if (mvmvif->phy_ctxt->ref == 1 && !band_change_removal) { 3985 /* 3986 * Change the PHY context configuration as it is currently 3987 * referenced only by the P2P Device MAC (and we can modify it) 3988 */ 3989 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt, 3990 &chandef, 1, 1); 3991 if (ret) 3992 goto out_unlock; 3993 } else { 3994 /* 3995 * The PHY context is shared with other MACs (or we're trying to 3996 * switch bands), so remove the P2P Device from the binding, 3997 * allocate an new PHY context and create a new binding. 3998 */ 3999 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 4000 if (!phy_ctxt) { 4001 ret = -ENOSPC; 4002 goto out_unlock; 4003 } 4004 4005 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef, 4006 1, 1); 4007 if (ret) { 4008 IWL_ERR(mvm, "Failed to change PHY context\n"); 4009 goto out_unlock; 4010 } 4011 4012 /* Unbind the P2P_DEVICE from the current PHY context */ 4013 ret = iwl_mvm_binding_remove_vif(mvm, vif); 4014 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 4015 goto out_unlock; 4016 4017 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 4018 4019 /* Bind the P2P_DEVICE to the new allocated PHY context */ 4020 mvmvif->phy_ctxt = phy_ctxt; 4021 4022 ret = iwl_mvm_binding_add_vif(mvm, vif); 4023 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 4024 goto out_unlock; 4025 4026 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 4027 } 4028 4029 schedule_time_event: 4030 /* Schedule the time events */ 4031 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type); 4032 4033 out_unlock: 4034 mutex_unlock(&mvm->mutex); 4035 IWL_DEBUG_MAC80211(mvm, "leave\n"); 4036 return ret; 4037 } 4038 4039 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw, 4040 struct ieee80211_vif *vif) 4041 { 4042 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4043 4044 IWL_DEBUG_MAC80211(mvm, "enter\n"); 4045 4046 mutex_lock(&mvm->mutex); 4047 iwl_mvm_stop_roc(mvm, vif); 4048 mutex_unlock(&mvm->mutex); 4049 4050 IWL_DEBUG_MAC80211(mvm, "leave\n"); 4051 return 0; 4052 } 4053 4054 struct iwl_mvm_ftm_responder_iter_data { 4055 bool responder; 4056 struct ieee80211_chanctx_conf *ctx; 4057 }; 4058 4059 static void iwl_mvm_ftm_responder_chanctx_iter(void *_data, u8 *mac, 4060 struct ieee80211_vif *vif) 4061 { 4062 struct iwl_mvm_ftm_responder_iter_data *data = _data; 4063 4064 if (rcu_access_pointer(vif->chanctx_conf) == data->ctx && 4065 vif->type == NL80211_IFTYPE_AP && vif->bss_conf.ftmr_params) 4066 data->responder = true; 4067 } 4068 4069 static bool iwl_mvm_is_ftm_responder_chanctx(struct iwl_mvm *mvm, 4070 struct ieee80211_chanctx_conf *ctx) 4071 { 4072 struct iwl_mvm_ftm_responder_iter_data data = { 4073 .responder = false, 4074 .ctx = ctx, 4075 }; 4076 4077 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 4078 IEEE80211_IFACE_ITER_NORMAL, 4079 iwl_mvm_ftm_responder_chanctx_iter, 4080 &data); 4081 return data.responder; 4082 } 4083 4084 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm, 4085 struct ieee80211_chanctx_conf *ctx) 4086 { 4087 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4088 struct iwl_mvm_phy_ctxt *phy_ctxt; 4089 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx); 4090 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def; 4091 int ret; 4092 4093 lockdep_assert_held(&mvm->mutex); 4094 4095 IWL_DEBUG_MAC80211(mvm, "Add channel context\n"); 4096 4097 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 4098 if (!phy_ctxt) { 4099 ret = -ENOSPC; 4100 goto out; 4101 } 4102 4103 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def, 4104 ctx->rx_chains_static, 4105 ctx->rx_chains_dynamic); 4106 if (ret) { 4107 IWL_ERR(mvm, "Failed to add PHY context\n"); 4108 goto out; 4109 } 4110 4111 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt); 4112 *phy_ctxt_id = phy_ctxt->id; 4113 out: 4114 return ret; 4115 } 4116 4117 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw, 4118 struct ieee80211_chanctx_conf *ctx) 4119 { 4120 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4121 int ret; 4122 4123 mutex_lock(&mvm->mutex); 4124 ret = __iwl_mvm_add_chanctx(mvm, ctx); 4125 mutex_unlock(&mvm->mutex); 4126 4127 return ret; 4128 } 4129 4130 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm, 4131 struct ieee80211_chanctx_conf *ctx) 4132 { 4133 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4134 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 4135 4136 lockdep_assert_held(&mvm->mutex); 4137 4138 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt); 4139 } 4140 4141 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw, 4142 struct ieee80211_chanctx_conf *ctx) 4143 { 4144 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4145 4146 mutex_lock(&mvm->mutex); 4147 __iwl_mvm_remove_chanctx(mvm, ctx); 4148 mutex_unlock(&mvm->mutex); 4149 } 4150 4151 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw, 4152 struct ieee80211_chanctx_conf *ctx, 4153 u32 changed) 4154 { 4155 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4156 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4157 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 4158 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx); 4159 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def; 4160 4161 if (WARN_ONCE((phy_ctxt->ref > 1) && 4162 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH | 4163 IEEE80211_CHANCTX_CHANGE_RX_CHAINS | 4164 IEEE80211_CHANCTX_CHANGE_RADAR | 4165 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)), 4166 "Cannot change PHY. Ref=%d, changed=0x%X\n", 4167 phy_ctxt->ref, changed)) 4168 return; 4169 4170 mutex_lock(&mvm->mutex); 4171 4172 /* we are only changing the min_width, may be a noop */ 4173 if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) { 4174 if (phy_ctxt->width == def->width) 4175 goto out_unlock; 4176 4177 /* we are just toggling between 20_NOHT and 20 */ 4178 if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 && 4179 def->width <= NL80211_CHAN_WIDTH_20) 4180 goto out_unlock; 4181 } 4182 4183 iwl_mvm_bt_coex_vif_change(mvm); 4184 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def, 4185 ctx->rx_chains_static, 4186 ctx->rx_chains_dynamic); 4187 4188 out_unlock: 4189 mutex_unlock(&mvm->mutex); 4190 } 4191 4192 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm, 4193 struct ieee80211_vif *vif, 4194 struct ieee80211_chanctx_conf *ctx, 4195 bool switching_chanctx) 4196 { 4197 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4198 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 4199 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4200 int ret; 4201 4202 lockdep_assert_held(&mvm->mutex); 4203 4204 mvmvif->phy_ctxt = phy_ctxt; 4205 4206 switch (vif->type) { 4207 case NL80211_IFTYPE_AP: 4208 /* only needed if we're switching chanctx (i.e. during CSA) */ 4209 if (switching_chanctx) { 4210 mvmvif->ap_ibss_active = true; 4211 break; 4212 } 4213 fallthrough; 4214 case NL80211_IFTYPE_ADHOC: 4215 /* 4216 * The AP binding flow is handled as part of the start_ap flow 4217 * (in bss_info_changed), similarly for IBSS. 4218 */ 4219 ret = 0; 4220 goto out; 4221 case NL80211_IFTYPE_STATION: 4222 mvmvif->csa_bcn_pending = false; 4223 break; 4224 case NL80211_IFTYPE_MONITOR: 4225 /* always disable PS when a monitor interface is active */ 4226 mvmvif->ps_disabled = true; 4227 break; 4228 default: 4229 ret = -EINVAL; 4230 goto out; 4231 } 4232 4233 ret = iwl_mvm_binding_add_vif(mvm, vif); 4234 if (ret) 4235 goto out; 4236 4237 /* 4238 * Power state must be updated before quotas, 4239 * otherwise fw will complain. 4240 */ 4241 iwl_mvm_power_update_mac(mvm); 4242 4243 /* Setting the quota at this stage is only required for monitor 4244 * interfaces. For the other types, the bss_info changed flow 4245 * will handle quota settings. 4246 */ 4247 if (vif->type == NL80211_IFTYPE_MONITOR) { 4248 mvmvif->monitor_active = true; 4249 ret = iwl_mvm_update_quotas(mvm, false, NULL); 4250 if (ret) 4251 goto out_remove_binding; 4252 4253 ret = iwl_mvm_add_snif_sta(mvm, vif); 4254 if (ret) 4255 goto out_remove_binding; 4256 4257 } 4258 4259 /* Handle binding during CSA */ 4260 if (vif->type == NL80211_IFTYPE_AP) { 4261 iwl_mvm_update_quotas(mvm, false, NULL); 4262 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 4263 } 4264 4265 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) { 4266 mvmvif->csa_bcn_pending = true; 4267 4268 if (!fw_has_capa(&mvm->fw->ucode_capa, 4269 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { 4270 u32 duration = 3 * vif->bss_conf.beacon_int; 4271 4272 /* Protect the session to make sure we hear the first 4273 * beacon on the new channel. 4274 */ 4275 iwl_mvm_protect_session(mvm, vif, duration, duration, 4276 vif->bss_conf.beacon_int / 2, 4277 true); 4278 } 4279 4280 iwl_mvm_update_quotas(mvm, false, NULL); 4281 } 4282 4283 goto out; 4284 4285 out_remove_binding: 4286 iwl_mvm_binding_remove_vif(mvm, vif); 4287 iwl_mvm_power_update_mac(mvm); 4288 out: 4289 if (ret) 4290 mvmvif->phy_ctxt = NULL; 4291 return ret; 4292 } 4293 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw, 4294 struct ieee80211_vif *vif, 4295 struct ieee80211_chanctx_conf *ctx) 4296 { 4297 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4298 int ret; 4299 4300 mutex_lock(&mvm->mutex); 4301 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false); 4302 mutex_unlock(&mvm->mutex); 4303 4304 return ret; 4305 } 4306 4307 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm, 4308 struct ieee80211_vif *vif, 4309 struct ieee80211_chanctx_conf *ctx, 4310 bool switching_chanctx) 4311 { 4312 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4313 struct ieee80211_vif *disabled_vif = NULL; 4314 4315 lockdep_assert_held(&mvm->mutex); 4316 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); 4317 4318 switch (vif->type) { 4319 case NL80211_IFTYPE_ADHOC: 4320 goto out; 4321 case NL80211_IFTYPE_MONITOR: 4322 mvmvif->monitor_active = false; 4323 mvmvif->ps_disabled = false; 4324 iwl_mvm_rm_snif_sta(mvm, vif); 4325 break; 4326 case NL80211_IFTYPE_AP: 4327 /* This part is triggered only during CSA */ 4328 if (!switching_chanctx || !mvmvif->ap_ibss_active) 4329 goto out; 4330 4331 mvmvif->csa_countdown = false; 4332 4333 /* Set CS bit on all the stations */ 4334 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true); 4335 4336 /* Save blocked iface, the timeout is set on the next beacon */ 4337 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif); 4338 4339 mvmvif->ap_ibss_active = false; 4340 break; 4341 case NL80211_IFTYPE_STATION: 4342 if (!switching_chanctx) 4343 break; 4344 4345 disabled_vif = vif; 4346 4347 if (!fw_has_capa(&mvm->fw->ucode_capa, 4348 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) 4349 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL); 4350 break; 4351 default: 4352 break; 4353 } 4354 4355 iwl_mvm_update_quotas(mvm, false, disabled_vif); 4356 iwl_mvm_binding_remove_vif(mvm, vif); 4357 4358 out: 4359 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD) && 4360 switching_chanctx) 4361 return; 4362 mvmvif->phy_ctxt = NULL; 4363 iwl_mvm_power_update_mac(mvm); 4364 } 4365 4366 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, 4367 struct ieee80211_vif *vif, 4368 struct ieee80211_chanctx_conf *ctx) 4369 { 4370 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4371 4372 mutex_lock(&mvm->mutex); 4373 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false); 4374 mutex_unlock(&mvm->mutex); 4375 } 4376 4377 static int 4378 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm, 4379 struct ieee80211_vif_chanctx_switch *vifs) 4380 { 4381 int ret; 4382 4383 mutex_lock(&mvm->mutex); 4384 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 4385 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx); 4386 4387 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx); 4388 if (ret) { 4389 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n"); 4390 goto out_reassign; 4391 } 4392 4393 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 4394 true); 4395 if (ret) { 4396 IWL_ERR(mvm, 4397 "failed to assign new_ctx during channel switch\n"); 4398 goto out_remove; 4399 } 4400 4401 /* we don't support TDLS during DCM - can be caused by channel switch */ 4402 if (iwl_mvm_phy_ctx_count(mvm) > 1) 4403 iwl_mvm_teardown_tdls_peers(mvm); 4404 4405 goto out; 4406 4407 out_remove: 4408 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx); 4409 4410 out_reassign: 4411 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) { 4412 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n"); 4413 goto out_restart; 4414 } 4415 4416 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 4417 true)) { 4418 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 4419 goto out_restart; 4420 } 4421 4422 goto out; 4423 4424 out_restart: 4425 /* things keep failing, better restart the hw */ 4426 iwl_mvm_nic_restart(mvm, false); 4427 4428 out: 4429 mutex_unlock(&mvm->mutex); 4430 4431 return ret; 4432 } 4433 4434 static int 4435 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm, 4436 struct ieee80211_vif_chanctx_switch *vifs) 4437 { 4438 int ret; 4439 4440 mutex_lock(&mvm->mutex); 4441 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 4442 4443 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 4444 true); 4445 if (ret) { 4446 IWL_ERR(mvm, 4447 "failed to assign new_ctx during channel switch\n"); 4448 goto out_reassign; 4449 } 4450 4451 goto out; 4452 4453 out_reassign: 4454 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 4455 true)) { 4456 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 4457 goto out_restart; 4458 } 4459 4460 goto out; 4461 4462 out_restart: 4463 /* things keep failing, better restart the hw */ 4464 iwl_mvm_nic_restart(mvm, false); 4465 4466 out: 4467 mutex_unlock(&mvm->mutex); 4468 4469 return ret; 4470 } 4471 4472 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, 4473 struct ieee80211_vif_chanctx_switch *vifs, 4474 int n_vifs, 4475 enum ieee80211_chanctx_switch_mode mode) 4476 { 4477 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4478 int ret; 4479 4480 /* we only support a single-vif right now */ 4481 if (n_vifs > 1) 4482 return -EOPNOTSUPP; 4483 4484 switch (mode) { 4485 case CHANCTX_SWMODE_SWAP_CONTEXTS: 4486 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs); 4487 break; 4488 case CHANCTX_SWMODE_REASSIGN_VIF: 4489 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs); 4490 break; 4491 default: 4492 ret = -EOPNOTSUPP; 4493 break; 4494 } 4495 4496 return ret; 4497 } 4498 4499 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw) 4500 { 4501 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4502 4503 return mvm->ibss_manager; 4504 } 4505 4506 static int iwl_mvm_set_tim(struct ieee80211_hw *hw, 4507 struct ieee80211_sta *sta, 4508 bool set) 4509 { 4510 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4511 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4512 4513 if (!mvm_sta || !mvm_sta->vif) { 4514 IWL_ERR(mvm, "Station is not associated to a vif\n"); 4515 return -EINVAL; 4516 } 4517 4518 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif); 4519 } 4520 4521 #ifdef CONFIG_NL80211_TESTMODE 4522 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = { 4523 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 }, 4524 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 }, 4525 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 }, 4526 }; 4527 4528 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm, 4529 struct ieee80211_vif *vif, 4530 void *data, int len) 4531 { 4532 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1]; 4533 int err; 4534 u32 noa_duration; 4535 4536 err = nla_parse_deprecated(tb, IWL_MVM_TM_ATTR_MAX, data, len, 4537 iwl_mvm_tm_policy, NULL); 4538 if (err) 4539 return err; 4540 4541 if (!tb[IWL_MVM_TM_ATTR_CMD]) 4542 return -EINVAL; 4543 4544 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) { 4545 case IWL_MVM_TM_CMD_SET_NOA: 4546 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p || 4547 !vif->bss_conf.enable_beacon || 4548 !tb[IWL_MVM_TM_ATTR_NOA_DURATION]) 4549 return -EINVAL; 4550 4551 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]); 4552 if (noa_duration >= vif->bss_conf.beacon_int) 4553 return -EINVAL; 4554 4555 mvm->noa_duration = noa_duration; 4556 mvm->noa_vif = vif; 4557 4558 return iwl_mvm_update_quotas(mvm, true, NULL); 4559 case IWL_MVM_TM_CMD_SET_BEACON_FILTER: 4560 /* must be associated client vif - ignore authorized */ 4561 if (!vif || vif->type != NL80211_IFTYPE_STATION || 4562 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period || 4563 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]) 4564 return -EINVAL; 4565 4566 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])) 4567 return iwl_mvm_enable_beacon_filter(mvm, vif, 0); 4568 return iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4569 } 4570 4571 return -EOPNOTSUPP; 4572 } 4573 4574 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw, 4575 struct ieee80211_vif *vif, 4576 void *data, int len) 4577 { 4578 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4579 int err; 4580 4581 mutex_lock(&mvm->mutex); 4582 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len); 4583 mutex_unlock(&mvm->mutex); 4584 4585 return err; 4586 } 4587 #endif 4588 4589 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw, 4590 struct ieee80211_vif *vif, 4591 struct ieee80211_channel_switch *chsw) 4592 { 4593 /* By implementing this operation, we prevent mac80211 from 4594 * starting its own channel switch timer, so that we can call 4595 * ieee80211_chswitch_done() ourselves at the right time 4596 * (which is when the absence time event starts). 4597 */ 4598 4599 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw), 4600 "dummy channel switch op\n"); 4601 } 4602 4603 static int iwl_mvm_schedule_client_csa(struct iwl_mvm *mvm, 4604 struct ieee80211_vif *vif, 4605 struct ieee80211_channel_switch *chsw) 4606 { 4607 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4608 struct iwl_chan_switch_te_cmd cmd = { 4609 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 4610 mvmvif->color)), 4611 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 4612 .tsf = cpu_to_le32(chsw->timestamp), 4613 .cs_count = chsw->count, 4614 .cs_mode = chsw->block_tx, 4615 }; 4616 4617 lockdep_assert_held(&mvm->mutex); 4618 4619 if (chsw->delay) 4620 cmd.cs_delayed_bcn_count = 4621 DIV_ROUND_UP(chsw->delay, vif->bss_conf.beacon_int); 4622 4623 return iwl_mvm_send_cmd_pdu(mvm, 4624 WIDE_ID(MAC_CONF_GROUP, 4625 CHANNEL_SWITCH_TIME_EVENT_CMD), 4626 0, sizeof(cmd), &cmd); 4627 } 4628 4629 static int iwl_mvm_old_pre_chan_sw_sta(struct iwl_mvm *mvm, 4630 struct ieee80211_vif *vif, 4631 struct ieee80211_channel_switch *chsw) 4632 { 4633 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4634 u32 apply_time; 4635 4636 /* Schedule the time event to a bit before beacon 1, 4637 * to make sure we're in the new channel when the 4638 * GO/AP arrives. In case count <= 1 immediately schedule the 4639 * TE (this might result with some packet loss or connection 4640 * loss). 4641 */ 4642 if (chsw->count <= 1) 4643 apply_time = 0; 4644 else 4645 apply_time = chsw->device_timestamp + 4646 ((vif->bss_conf.beacon_int * (chsw->count - 1) - 4647 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024); 4648 4649 if (chsw->block_tx) 4650 iwl_mvm_csa_client_absent(mvm, vif); 4651 4652 if (mvmvif->bf_data.bf_enabled) { 4653 int ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4654 4655 if (ret) 4656 return ret; 4657 } 4658 4659 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int, 4660 apply_time); 4661 4662 return 0; 4663 } 4664 4665 #define IWL_MAX_CSA_BLOCK_TX 1500 4666 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, 4667 struct ieee80211_vif *vif, 4668 struct ieee80211_channel_switch *chsw) 4669 { 4670 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4671 struct ieee80211_vif *csa_vif; 4672 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4673 int ret; 4674 4675 mutex_lock(&mvm->mutex); 4676 4677 mvmvif->csa_failed = false; 4678 4679 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n", 4680 chsw->chandef.center_freq1); 4681 4682 iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt, 4683 ieee80211_vif_to_wdev(vif), 4684 FW_DBG_TRIGGER_CHANNEL_SWITCH); 4685 4686 switch (vif->type) { 4687 case NL80211_IFTYPE_AP: 4688 csa_vif = 4689 rcu_dereference_protected(mvm->csa_vif, 4690 lockdep_is_held(&mvm->mutex)); 4691 if (WARN_ONCE(csa_vif && csa_vif->csa_active, 4692 "Another CSA is already in progress")) { 4693 ret = -EBUSY; 4694 goto out_unlock; 4695 } 4696 4697 /* we still didn't unblock tx. prevent new CS meanwhile */ 4698 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif, 4699 lockdep_is_held(&mvm->mutex))) { 4700 ret = -EBUSY; 4701 goto out_unlock; 4702 } 4703 4704 rcu_assign_pointer(mvm->csa_vif, vif); 4705 4706 if (WARN_ONCE(mvmvif->csa_countdown, 4707 "Previous CSA countdown didn't complete")) { 4708 ret = -EBUSY; 4709 goto out_unlock; 4710 } 4711 4712 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq; 4713 4714 break; 4715 case NL80211_IFTYPE_STATION: 4716 /* 4717 * We haven't configured the firmware to be associated yet since 4718 * we don't know the dtim period. In this case, the firmware can't 4719 * track the beacons. 4720 */ 4721 if (!vif->bss_conf.assoc || !vif->bss_conf.dtim_period) { 4722 ret = -EBUSY; 4723 goto out_unlock; 4724 } 4725 4726 if (chsw->delay > IWL_MAX_CSA_BLOCK_TX) 4727 schedule_delayed_work(&mvmvif->csa_work, 0); 4728 4729 if (chsw->block_tx) { 4730 /* 4731 * In case of undetermined / long time with immediate 4732 * quiet monitor status to gracefully disconnect 4733 */ 4734 if (!chsw->count || 4735 chsw->count * vif->bss_conf.beacon_int > 4736 IWL_MAX_CSA_BLOCK_TX) 4737 schedule_delayed_work(&mvmvif->csa_work, 4738 msecs_to_jiffies(IWL_MAX_CSA_BLOCK_TX)); 4739 } 4740 4741 if (!fw_has_capa(&mvm->fw->ucode_capa, 4742 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { 4743 ret = iwl_mvm_old_pre_chan_sw_sta(mvm, vif, chsw); 4744 if (ret) 4745 goto out_unlock; 4746 } else { 4747 iwl_mvm_schedule_client_csa(mvm, vif, chsw); 4748 } 4749 4750 mvmvif->csa_count = chsw->count; 4751 mvmvif->csa_misbehave = false; 4752 break; 4753 default: 4754 break; 4755 } 4756 4757 mvmvif->ps_disabled = true; 4758 4759 ret = iwl_mvm_power_update_ps(mvm); 4760 if (ret) 4761 goto out_unlock; 4762 4763 /* we won't be on this channel any longer */ 4764 iwl_mvm_teardown_tdls_peers(mvm); 4765 4766 out_unlock: 4767 mutex_unlock(&mvm->mutex); 4768 4769 return ret; 4770 } 4771 4772 static void iwl_mvm_channel_switch_rx_beacon(struct ieee80211_hw *hw, 4773 struct ieee80211_vif *vif, 4774 struct ieee80211_channel_switch *chsw) 4775 { 4776 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4777 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4778 struct iwl_chan_switch_te_cmd cmd = { 4779 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 4780 mvmvif->color)), 4781 .action = cpu_to_le32(FW_CTXT_ACTION_MODIFY), 4782 .tsf = cpu_to_le32(chsw->timestamp), 4783 .cs_count = chsw->count, 4784 .cs_mode = chsw->block_tx, 4785 }; 4786 4787 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CS_MODIFY)) 4788 return; 4789 4790 IWL_DEBUG_MAC80211(mvm, "Modify CSA on mac %d count = %d (old %d) mode = %d\n", 4791 mvmvif->id, chsw->count, mvmvif->csa_count, chsw->block_tx); 4792 4793 if (chsw->count >= mvmvif->csa_count && chsw->block_tx) { 4794 if (mvmvif->csa_misbehave) { 4795 /* Second time, give up on this AP*/ 4796 iwl_mvm_abort_channel_switch(hw, vif); 4797 ieee80211_chswitch_done(vif, false); 4798 mvmvif->csa_misbehave = false; 4799 return; 4800 } 4801 mvmvif->csa_misbehave = true; 4802 } 4803 mvmvif->csa_count = chsw->count; 4804 4805 mutex_lock(&mvm->mutex); 4806 if (mvmvif->csa_failed) 4807 goto out_unlock; 4808 4809 WARN_ON(iwl_mvm_send_cmd_pdu(mvm, 4810 WIDE_ID(MAC_CONF_GROUP, 4811 CHANNEL_SWITCH_TIME_EVENT_CMD), 4812 0, sizeof(cmd), &cmd)); 4813 out_unlock: 4814 mutex_unlock(&mvm->mutex); 4815 } 4816 4817 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop) 4818 { 4819 int i; 4820 4821 if (!iwl_mvm_has_new_tx_api(mvm)) { 4822 if (drop) { 4823 mutex_lock(&mvm->mutex); 4824 iwl_mvm_flush_tx_path(mvm, 4825 iwl_mvm_flushable_queues(mvm) & queues); 4826 mutex_unlock(&mvm->mutex); 4827 } else { 4828 iwl_trans_wait_tx_queues_empty(mvm->trans, queues); 4829 } 4830 return; 4831 } 4832 4833 mutex_lock(&mvm->mutex); 4834 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 4835 struct ieee80211_sta *sta; 4836 4837 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4838 lockdep_is_held(&mvm->mutex)); 4839 if (IS_ERR_OR_NULL(sta)) 4840 continue; 4841 4842 if (drop) 4843 iwl_mvm_flush_sta_tids(mvm, i, 0xFFFF); 4844 else 4845 iwl_mvm_wait_sta_queues_empty(mvm, 4846 iwl_mvm_sta_from_mac80211(sta)); 4847 } 4848 mutex_unlock(&mvm->mutex); 4849 } 4850 4851 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw, 4852 struct ieee80211_vif *vif, u32 queues, bool drop) 4853 { 4854 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4855 struct iwl_mvm_vif *mvmvif; 4856 struct iwl_mvm_sta *mvmsta; 4857 struct ieee80211_sta *sta; 4858 int i; 4859 u32 msk = 0; 4860 4861 if (!vif) { 4862 iwl_mvm_flush_no_vif(mvm, queues, drop); 4863 return; 4864 } 4865 4866 if (vif->type != NL80211_IFTYPE_STATION) 4867 return; 4868 4869 /* Make sure we're done with the deferred traffic before flushing */ 4870 flush_work(&mvm->add_stream_wk); 4871 4872 mutex_lock(&mvm->mutex); 4873 mvmvif = iwl_mvm_vif_from_mac80211(vif); 4874 4875 /* flush the AP-station and all TDLS peers */ 4876 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 4877 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4878 lockdep_is_held(&mvm->mutex)); 4879 if (IS_ERR_OR_NULL(sta)) 4880 continue; 4881 4882 mvmsta = iwl_mvm_sta_from_mac80211(sta); 4883 if (mvmsta->vif != vif) 4884 continue; 4885 4886 /* make sure only TDLS peers or the AP are flushed */ 4887 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls); 4888 4889 if (drop) { 4890 if (iwl_mvm_flush_sta(mvm, mvmsta, false)) 4891 IWL_ERR(mvm, "flush request fail\n"); 4892 } else { 4893 msk |= mvmsta->tfd_queue_msk; 4894 if (iwl_mvm_has_new_tx_api(mvm)) 4895 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta); 4896 } 4897 } 4898 4899 mutex_unlock(&mvm->mutex); 4900 4901 /* this can take a while, and we may need/want other operations 4902 * to succeed while doing this, so do it without the mutex held 4903 */ 4904 if (!drop && !iwl_mvm_has_new_tx_api(mvm)) 4905 iwl_trans_wait_tx_queues_empty(mvm->trans, msk); 4906 } 4907 4908 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx, 4909 struct survey_info *survey) 4910 { 4911 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4912 int ret; 4913 4914 memset(survey, 0, sizeof(*survey)); 4915 4916 /* only support global statistics right now */ 4917 if (idx != 0) 4918 return -ENOENT; 4919 4920 if (!fw_has_capa(&mvm->fw->ucode_capa, 4921 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4922 return -ENOENT; 4923 4924 mutex_lock(&mvm->mutex); 4925 4926 if (iwl_mvm_firmware_running(mvm)) { 4927 ret = iwl_mvm_request_statistics(mvm, false); 4928 if (ret) 4929 goto out; 4930 } 4931 4932 survey->filled = SURVEY_INFO_TIME | 4933 SURVEY_INFO_TIME_RX | 4934 SURVEY_INFO_TIME_TX | 4935 SURVEY_INFO_TIME_SCAN; 4936 survey->time = mvm->accu_radio_stats.on_time_rf + 4937 mvm->radio_stats.on_time_rf; 4938 do_div(survey->time, USEC_PER_MSEC); 4939 4940 survey->time_rx = mvm->accu_radio_stats.rx_time + 4941 mvm->radio_stats.rx_time; 4942 do_div(survey->time_rx, USEC_PER_MSEC); 4943 4944 survey->time_tx = mvm->accu_radio_stats.tx_time + 4945 mvm->radio_stats.tx_time; 4946 do_div(survey->time_tx, USEC_PER_MSEC); 4947 4948 survey->time_scan = mvm->accu_radio_stats.on_time_scan + 4949 mvm->radio_stats.on_time_scan; 4950 do_div(survey->time_scan, USEC_PER_MSEC); 4951 4952 ret = 0; 4953 out: 4954 mutex_unlock(&mvm->mutex); 4955 return ret; 4956 } 4957 4958 static void iwl_mvm_set_sta_rate(u32 rate_n_flags, struct rate_info *rinfo) 4959 { 4960 u32 format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK; 4961 4962 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { 4963 case RATE_MCS_CHAN_WIDTH_20: 4964 rinfo->bw = RATE_INFO_BW_20; 4965 break; 4966 case RATE_MCS_CHAN_WIDTH_40: 4967 rinfo->bw = RATE_INFO_BW_40; 4968 break; 4969 case RATE_MCS_CHAN_WIDTH_80: 4970 rinfo->bw = RATE_INFO_BW_80; 4971 break; 4972 case RATE_MCS_CHAN_WIDTH_160: 4973 rinfo->bw = RATE_INFO_BW_160; 4974 break; 4975 } 4976 4977 if (format == RATE_MCS_CCK_MSK || 4978 format == RATE_MCS_LEGACY_OFDM_MSK) { 4979 int rate = u32_get_bits(rate_n_flags, RATE_LEGACY_RATE_MSK); 4980 4981 /* add the offset needed to get to the legacy ofdm indices */ 4982 if (format == RATE_MCS_LEGACY_OFDM_MSK) 4983 rate += IWL_FIRST_OFDM_RATE; 4984 4985 switch (rate) { 4986 case IWL_RATE_1M_INDEX: 4987 rinfo->legacy = 10; 4988 break; 4989 case IWL_RATE_2M_INDEX: 4990 rinfo->legacy = 20; 4991 break; 4992 case IWL_RATE_5M_INDEX: 4993 rinfo->legacy = 55; 4994 break; 4995 case IWL_RATE_11M_INDEX: 4996 rinfo->legacy = 110; 4997 break; 4998 case IWL_RATE_6M_INDEX: 4999 rinfo->legacy = 60; 5000 break; 5001 case IWL_RATE_9M_INDEX: 5002 rinfo->legacy = 90; 5003 break; 5004 case IWL_RATE_12M_INDEX: 5005 rinfo->legacy = 120; 5006 break; 5007 case IWL_RATE_18M_INDEX: 5008 rinfo->legacy = 180; 5009 break; 5010 case IWL_RATE_24M_INDEX: 5011 rinfo->legacy = 240; 5012 break; 5013 case IWL_RATE_36M_INDEX: 5014 rinfo->legacy = 360; 5015 break; 5016 case IWL_RATE_48M_INDEX: 5017 rinfo->legacy = 480; 5018 break; 5019 case IWL_RATE_54M_INDEX: 5020 rinfo->legacy = 540; 5021 } 5022 return; 5023 } 5024 5025 rinfo->nss = u32_get_bits(rate_n_flags, 5026 RATE_MCS_NSS_MSK) + 1; 5027 rinfo->mcs = format == RATE_MCS_HT_MSK ? 5028 RATE_HT_MCS_INDEX(rate_n_flags) : 5029 u32_get_bits(rate_n_flags, RATE_MCS_CODE_MSK); 5030 5031 if (format == RATE_MCS_HE_MSK) { 5032 u32 gi_ltf = u32_get_bits(rate_n_flags, 5033 RATE_MCS_HE_GI_LTF_MSK); 5034 5035 rinfo->flags |= RATE_INFO_FLAGS_HE_MCS; 5036 5037 if (rate_n_flags & RATE_MCS_HE_106T_MSK) { 5038 rinfo->bw = RATE_INFO_BW_HE_RU; 5039 rinfo->he_ru_alloc = NL80211_RATE_INFO_HE_RU_ALLOC_106; 5040 } 5041 5042 switch (rate_n_flags & RATE_MCS_HE_TYPE_MSK) { 5043 case RATE_MCS_HE_TYPE_SU: 5044 case RATE_MCS_HE_TYPE_EXT_SU: 5045 if (gi_ltf == 0 || gi_ltf == 1) 5046 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; 5047 else if (gi_ltf == 2) 5048 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; 5049 else if (gi_ltf == 3) 5050 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; 5051 else 5052 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; 5053 break; 5054 case RATE_MCS_HE_TYPE_MU: 5055 if (gi_ltf == 0 || gi_ltf == 1) 5056 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; 5057 else if (gi_ltf == 2) 5058 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; 5059 else 5060 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; 5061 break; 5062 case RATE_MCS_HE_TYPE_TRIG: 5063 if (gi_ltf == 0 || gi_ltf == 1) 5064 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; 5065 else 5066 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; 5067 break; 5068 } 5069 5070 if (rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK) 5071 rinfo->he_dcm = 1; 5072 return; 5073 } 5074 5075 if (rate_n_flags & RATE_MCS_SGI_MSK) 5076 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 5077 5078 if (format == RATE_MCS_HT_MSK) { 5079 rinfo->flags |= RATE_INFO_FLAGS_MCS; 5080 5081 } else if (format == RATE_MCS_VHT_MSK) { 5082 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 5083 } 5084 5085 } 5086 5087 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw, 5088 struct ieee80211_vif *vif, 5089 struct ieee80211_sta *sta, 5090 struct station_info *sinfo) 5091 { 5092 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5093 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 5094 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 5095 5096 if (mvmsta->avg_energy) { 5097 sinfo->signal_avg = -(s8)mvmsta->avg_energy; 5098 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); 5099 } 5100 5101 if (iwl_mvm_has_tlc_offload(mvm)) { 5102 struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw; 5103 5104 iwl_mvm_set_sta_rate(lq_sta->last_rate_n_flags, &sinfo->txrate); 5105 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE); 5106 } 5107 5108 /* if beacon filtering isn't on mac80211 does it anyway */ 5109 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER)) 5110 return; 5111 5112 if (!vif->bss_conf.assoc) 5113 return; 5114 5115 mutex_lock(&mvm->mutex); 5116 5117 if (mvmvif->ap_sta_id != mvmsta->sta_id) 5118 goto unlock; 5119 5120 if (iwl_mvm_request_statistics(mvm, false)) 5121 goto unlock; 5122 5123 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons + 5124 mvmvif->beacon_stats.accu_num_beacons; 5125 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX); 5126 if (mvmvif->beacon_stats.avg_signal) { 5127 /* firmware only reports a value after RXing a few beacons */ 5128 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal; 5129 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG); 5130 } 5131 unlock: 5132 mutex_unlock(&mvm->mutex); 5133 } 5134 5135 static void iwl_mvm_event_mlme_callback_ini(struct iwl_mvm *mvm, 5136 struct ieee80211_vif *vif, 5137 const struct ieee80211_mlme_event *mlme) 5138 { 5139 if ((mlme->data == ASSOC_EVENT || mlme->data == AUTH_EVENT) && 5140 (mlme->status == MLME_DENIED || mlme->status == MLME_TIMEOUT)) { 5141 iwl_dbg_tlv_time_point(&mvm->fwrt, 5142 IWL_FW_INI_TIME_POINT_ASSOC_FAILED, 5143 NULL); 5144 return; 5145 } 5146 5147 if (mlme->data == DEAUTH_RX_EVENT || mlme->data == DEAUTH_TX_EVENT) { 5148 iwl_dbg_tlv_time_point(&mvm->fwrt, 5149 IWL_FW_INI_TIME_POINT_DEASSOC, 5150 NULL); 5151 return; 5152 } 5153 } 5154 5155 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm, 5156 struct ieee80211_vif *vif, 5157 const struct ieee80211_event *event) 5158 { 5159 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \ 5160 do { \ 5161 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \ 5162 break; \ 5163 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt); \ 5164 } while (0) 5165 5166 struct iwl_fw_dbg_trigger_tlv *trig; 5167 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 5168 5169 if (iwl_trans_dbg_ini_valid(mvm->trans)) { 5170 iwl_mvm_event_mlme_callback_ini(mvm, vif, &event->u.mlme); 5171 return; 5172 } 5173 5174 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 5175 FW_DBG_TRIGGER_MLME); 5176 if (!trig) 5177 return; 5178 5179 trig_mlme = (void *)trig->data; 5180 5181 if (event->u.mlme.data == ASSOC_EVENT) { 5182 if (event->u.mlme.status == MLME_DENIED) 5183 CHECK_MLME_TRIGGER(stop_assoc_denied, 5184 "DENIED ASSOC: reason %d", 5185 event->u.mlme.reason); 5186 else if (event->u.mlme.status == MLME_TIMEOUT) 5187 CHECK_MLME_TRIGGER(stop_assoc_timeout, 5188 "ASSOC TIMEOUT"); 5189 } else if (event->u.mlme.data == AUTH_EVENT) { 5190 if (event->u.mlme.status == MLME_DENIED) 5191 CHECK_MLME_TRIGGER(stop_auth_denied, 5192 "DENIED AUTH: reason %d", 5193 event->u.mlme.reason); 5194 else if (event->u.mlme.status == MLME_TIMEOUT) 5195 CHECK_MLME_TRIGGER(stop_auth_timeout, 5196 "AUTH TIMEOUT"); 5197 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) { 5198 CHECK_MLME_TRIGGER(stop_rx_deauth, 5199 "DEAUTH RX %d", event->u.mlme.reason); 5200 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) { 5201 CHECK_MLME_TRIGGER(stop_tx_deauth, 5202 "DEAUTH TX %d", event->u.mlme.reason); 5203 } 5204 #undef CHECK_MLME_TRIGGER 5205 } 5206 5207 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm, 5208 struct ieee80211_vif *vif, 5209 const struct ieee80211_event *event) 5210 { 5211 struct iwl_fw_dbg_trigger_tlv *trig; 5212 struct iwl_fw_dbg_trigger_ba *ba_trig; 5213 5214 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 5215 FW_DBG_TRIGGER_BA); 5216 if (!trig) 5217 return; 5218 5219 ba_trig = (void *)trig->data; 5220 5221 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid))) 5222 return; 5223 5224 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 5225 "BAR received from %pM, tid %d, ssn %d", 5226 event->u.ba.sta->addr, event->u.ba.tid, 5227 event->u.ba.ssn); 5228 } 5229 5230 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw, 5231 struct ieee80211_vif *vif, 5232 const struct ieee80211_event *event) 5233 { 5234 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5235 5236 switch (event->type) { 5237 case MLME_EVENT: 5238 iwl_mvm_event_mlme_callback(mvm, vif, event); 5239 break; 5240 case BAR_RX_EVENT: 5241 iwl_mvm_event_bar_rx_callback(mvm, vif, event); 5242 break; 5243 case BA_FRAME_TIMEOUT: 5244 iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta, 5245 event->u.ba.tid); 5246 break; 5247 default: 5248 break; 5249 } 5250 } 5251 5252 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm, 5253 enum iwl_mvm_rxq_notif_type type, 5254 bool sync, 5255 const void *data, u32 size) 5256 { 5257 struct { 5258 struct iwl_rxq_sync_cmd cmd; 5259 struct iwl_mvm_internal_rxq_notif notif; 5260 } __packed cmd = { 5261 .cmd.rxq_mask = cpu_to_le32(BIT(mvm->trans->num_rx_queues) - 1), 5262 .cmd.count = 5263 cpu_to_le32(sizeof(struct iwl_mvm_internal_rxq_notif) + 5264 size), 5265 .notif.type = type, 5266 .notif.sync = sync, 5267 }; 5268 struct iwl_host_cmd hcmd = { 5269 .id = WIDE_ID(DATA_PATH_GROUP, TRIGGER_RX_QUEUES_NOTIF_CMD), 5270 .data[0] = &cmd, 5271 .len[0] = sizeof(cmd), 5272 .data[1] = data, 5273 .len[1] = size, 5274 .flags = sync ? 0 : CMD_ASYNC, 5275 }; 5276 int ret; 5277 5278 /* size must be a multiple of DWORD */ 5279 if (WARN_ON(cmd.cmd.count & cpu_to_le32(3))) 5280 return; 5281 5282 if (!iwl_mvm_has_new_rx_api(mvm)) 5283 return; 5284 5285 if (sync) { 5286 cmd.notif.cookie = mvm->queue_sync_cookie; 5287 mvm->queue_sync_state = (1 << mvm->trans->num_rx_queues) - 1; 5288 } 5289 5290 ret = iwl_mvm_send_cmd(mvm, &hcmd); 5291 if (ret) { 5292 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret); 5293 goto out; 5294 } 5295 5296 if (sync) { 5297 lockdep_assert_held(&mvm->mutex); 5298 ret = wait_event_timeout(mvm->rx_sync_waitq, 5299 READ_ONCE(mvm->queue_sync_state) == 0 || 5300 iwl_mvm_is_radio_killed(mvm), 5301 HZ); 5302 WARN_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm), 5303 "queue sync: failed to sync, state is 0x%lx\n", 5304 mvm->queue_sync_state); 5305 } 5306 5307 out: 5308 if (sync) { 5309 mvm->queue_sync_state = 0; 5310 mvm->queue_sync_cookie++; 5311 } 5312 } 5313 5314 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw) 5315 { 5316 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5317 5318 mutex_lock(&mvm->mutex); 5319 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_EMPTY, true, NULL, 0); 5320 mutex_unlock(&mvm->mutex); 5321 } 5322 5323 static int 5324 iwl_mvm_mac_get_ftm_responder_stats(struct ieee80211_hw *hw, 5325 struct ieee80211_vif *vif, 5326 struct cfg80211_ftm_responder_stats *stats) 5327 { 5328 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5329 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 5330 5331 if (vif->p2p || vif->type != NL80211_IFTYPE_AP || 5332 !mvmvif->ap_ibss_active || !vif->bss_conf.ftm_responder) 5333 return -EINVAL; 5334 5335 mutex_lock(&mvm->mutex); 5336 *stats = mvm->ftm_resp_stats; 5337 mutex_unlock(&mvm->mutex); 5338 5339 stats->filled = BIT(NL80211_FTM_STATS_SUCCESS_NUM) | 5340 BIT(NL80211_FTM_STATS_PARTIAL_NUM) | 5341 BIT(NL80211_FTM_STATS_FAILED_NUM) | 5342 BIT(NL80211_FTM_STATS_ASAP_NUM) | 5343 BIT(NL80211_FTM_STATS_NON_ASAP_NUM) | 5344 BIT(NL80211_FTM_STATS_TOTAL_DURATION_MSEC) | 5345 BIT(NL80211_FTM_STATS_UNKNOWN_TRIGGERS_NUM) | 5346 BIT(NL80211_FTM_STATS_RESCHEDULE_REQUESTS_NUM) | 5347 BIT(NL80211_FTM_STATS_OUT_OF_WINDOW_TRIGGERS_NUM); 5348 5349 return 0; 5350 } 5351 5352 static int iwl_mvm_start_pmsr(struct ieee80211_hw *hw, 5353 struct ieee80211_vif *vif, 5354 struct cfg80211_pmsr_request *request) 5355 { 5356 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5357 int ret; 5358 5359 mutex_lock(&mvm->mutex); 5360 ret = iwl_mvm_ftm_start(mvm, vif, request); 5361 mutex_unlock(&mvm->mutex); 5362 5363 return ret; 5364 } 5365 5366 static void iwl_mvm_abort_pmsr(struct ieee80211_hw *hw, 5367 struct ieee80211_vif *vif, 5368 struct cfg80211_pmsr_request *request) 5369 { 5370 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5371 5372 mutex_lock(&mvm->mutex); 5373 iwl_mvm_ftm_abort(mvm, request); 5374 mutex_unlock(&mvm->mutex); 5375 } 5376 5377 static bool iwl_mvm_can_hw_csum(struct sk_buff *skb) 5378 { 5379 u8 protocol = ip_hdr(skb)->protocol; 5380 5381 if (!IS_ENABLED(CONFIG_INET)) 5382 return false; 5383 5384 return protocol == IPPROTO_TCP || protocol == IPPROTO_UDP; 5385 } 5386 5387 static bool iwl_mvm_mac_can_aggregate(struct ieee80211_hw *hw, 5388 struct sk_buff *head, 5389 struct sk_buff *skb) 5390 { 5391 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5392 5393 /* For now don't aggregate IPv6 in AMSDU */ 5394 if (skb->protocol != htons(ETH_P_IP)) 5395 return false; 5396 5397 if (!iwl_mvm_is_csum_supported(mvm)) 5398 return true; 5399 5400 return iwl_mvm_can_hw_csum(skb) == iwl_mvm_can_hw_csum(head); 5401 } 5402 5403 const struct ieee80211_ops iwl_mvm_hw_ops = { 5404 .tx = iwl_mvm_mac_tx, 5405 .wake_tx_queue = iwl_mvm_mac_wake_tx_queue, 5406 .ampdu_action = iwl_mvm_mac_ampdu_action, 5407 .get_antenna = iwl_mvm_op_get_antenna, 5408 .start = iwl_mvm_mac_start, 5409 .reconfig_complete = iwl_mvm_mac_reconfig_complete, 5410 .stop = iwl_mvm_mac_stop, 5411 .add_interface = iwl_mvm_mac_add_interface, 5412 .remove_interface = iwl_mvm_mac_remove_interface, 5413 .config = iwl_mvm_mac_config, 5414 .prepare_multicast = iwl_mvm_prepare_multicast, 5415 .configure_filter = iwl_mvm_configure_filter, 5416 .config_iface_filter = iwl_mvm_config_iface_filter, 5417 .bss_info_changed = iwl_mvm_bss_info_changed, 5418 .hw_scan = iwl_mvm_mac_hw_scan, 5419 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan, 5420 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove, 5421 .sta_state = iwl_mvm_mac_sta_state, 5422 .sta_notify = iwl_mvm_mac_sta_notify, 5423 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames, 5424 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames, 5425 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold, 5426 .sta_rc_update = iwl_mvm_sta_rc_update, 5427 .conf_tx = iwl_mvm_mac_conf_tx, 5428 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx, 5429 .mgd_complete_tx = iwl_mvm_mac_mgd_complete_tx, 5430 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover, 5431 .flush = iwl_mvm_mac_flush, 5432 .sched_scan_start = iwl_mvm_mac_sched_scan_start, 5433 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop, 5434 .set_key = iwl_mvm_mac_set_key, 5435 .update_tkip_key = iwl_mvm_mac_update_tkip_key, 5436 .remain_on_channel = iwl_mvm_roc, 5437 .cancel_remain_on_channel = iwl_mvm_cancel_roc, 5438 .add_chanctx = iwl_mvm_add_chanctx, 5439 .remove_chanctx = iwl_mvm_remove_chanctx, 5440 .change_chanctx = iwl_mvm_change_chanctx, 5441 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx, 5442 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx, 5443 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx, 5444 5445 .start_ap = iwl_mvm_start_ap_ibss, 5446 .stop_ap = iwl_mvm_stop_ap_ibss, 5447 .join_ibss = iwl_mvm_start_ap_ibss, 5448 .leave_ibss = iwl_mvm_stop_ap_ibss, 5449 5450 .tx_last_beacon = iwl_mvm_tx_last_beacon, 5451 5452 .set_tim = iwl_mvm_set_tim, 5453 5454 .channel_switch = iwl_mvm_channel_switch, 5455 .pre_channel_switch = iwl_mvm_pre_channel_switch, 5456 .post_channel_switch = iwl_mvm_post_channel_switch, 5457 .abort_channel_switch = iwl_mvm_abort_channel_switch, 5458 .channel_switch_rx_beacon = iwl_mvm_channel_switch_rx_beacon, 5459 5460 .tdls_channel_switch = iwl_mvm_tdls_channel_switch, 5461 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch, 5462 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch, 5463 5464 .event_callback = iwl_mvm_mac_event_callback, 5465 5466 .sync_rx_queues = iwl_mvm_sync_rx_queues, 5467 5468 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd) 5469 5470 #ifdef CONFIG_PM_SLEEP 5471 /* look at d3.c */ 5472 .suspend = iwl_mvm_suspend, 5473 .resume = iwl_mvm_resume, 5474 .set_wakeup = iwl_mvm_set_wakeup, 5475 .set_rekey_data = iwl_mvm_set_rekey_data, 5476 #if IS_ENABLED(CONFIG_IPV6) 5477 .ipv6_addr_change = iwl_mvm_ipv6_addr_change, 5478 #endif 5479 .set_default_unicast_key = iwl_mvm_set_default_unicast_key, 5480 #endif 5481 .get_survey = iwl_mvm_mac_get_survey, 5482 .sta_statistics = iwl_mvm_mac_sta_statistics, 5483 .get_ftm_responder_stats = iwl_mvm_mac_get_ftm_responder_stats, 5484 .start_pmsr = iwl_mvm_start_pmsr, 5485 .abort_pmsr = iwl_mvm_abort_pmsr, 5486 5487 .can_aggregate_in_amsdu = iwl_mvm_mac_can_aggregate, 5488 #ifdef CONFIG_IWLWIFI_DEBUGFS 5489 .sta_add_debugfs = iwl_mvm_sta_add_debugfs, 5490 #endif 5491 }; 5492