1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2020 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <linux/kernel.h> 8 #include <linux/slab.h> 9 #include <linux/skbuff.h> 10 #include <linux/netdevice.h> 11 #include <linux/etherdevice.h> 12 #include <linux/ip.h> 13 #include <linux/if_arp.h> 14 #include <linux/time.h> 15 #include <net/mac80211.h> 16 #include <net/ieee80211_radiotap.h> 17 #include <net/tcp.h> 18 19 #include "iwl-op-mode.h" 20 #include "iwl-io.h" 21 #include "mvm.h" 22 #include "sta.h" 23 #include "time-event.h" 24 #include "iwl-eeprom-parse.h" 25 #include "iwl-phy-db.h" 26 #include "testmode.h" 27 #include "fw/error-dump.h" 28 #include "iwl-prph.h" 29 #include "iwl-nvm-parse.h" 30 31 static const struct ieee80211_iface_limit iwl_mvm_limits[] = { 32 { 33 .max = 1, 34 .types = BIT(NL80211_IFTYPE_STATION), 35 }, 36 { 37 .max = 1, 38 .types = BIT(NL80211_IFTYPE_AP) | 39 BIT(NL80211_IFTYPE_P2P_CLIENT) | 40 BIT(NL80211_IFTYPE_P2P_GO), 41 }, 42 { 43 .max = 1, 44 .types = BIT(NL80211_IFTYPE_P2P_DEVICE), 45 }, 46 }; 47 48 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = { 49 { 50 .num_different_channels = 2, 51 .max_interfaces = 3, 52 .limits = iwl_mvm_limits, 53 .n_limits = ARRAY_SIZE(iwl_mvm_limits), 54 }, 55 }; 56 57 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 58 /* 59 * Use the reserved field to indicate magic values. 60 * these values will only be used internally by the driver, 61 * and won't make it to the fw (reserved will be 0). 62 * BC_FILTER_MAGIC_IP - configure the val of this attribute to 63 * be the vif's ip address. in case there is not a single 64 * ip address (0, or more than 1), this attribute will 65 * be skipped. 66 * BC_FILTER_MAGIC_MAC - set the val of this attribute to 67 * the LSB bytes of the vif's mac address 68 */ 69 enum { 70 BC_FILTER_MAGIC_NONE = 0, 71 BC_FILTER_MAGIC_IP, 72 BC_FILTER_MAGIC_MAC, 73 }; 74 75 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = { 76 { 77 /* arp */ 78 .discard = 0, 79 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL, 80 .attrs = { 81 { 82 /* frame type - arp, hw type - ethernet */ 83 .offset_type = 84 BCAST_FILTER_OFFSET_PAYLOAD_START, 85 .offset = sizeof(rfc1042_header), 86 .val = cpu_to_be32(0x08060001), 87 .mask = cpu_to_be32(0xffffffff), 88 }, 89 { 90 /* arp dest ip */ 91 .offset_type = 92 BCAST_FILTER_OFFSET_PAYLOAD_START, 93 .offset = sizeof(rfc1042_header) + 2 + 94 sizeof(struct arphdr) + 95 ETH_ALEN + sizeof(__be32) + 96 ETH_ALEN, 97 .mask = cpu_to_be32(0xffffffff), 98 /* mark it as special field */ 99 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP), 100 }, 101 }, 102 }, 103 { 104 /* dhcp offer bcast */ 105 .discard = 0, 106 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4, 107 .attrs = { 108 { 109 /* udp dest port - 68 (bootp client)*/ 110 .offset_type = BCAST_FILTER_OFFSET_IP_END, 111 .offset = offsetof(struct udphdr, dest), 112 .val = cpu_to_be32(0x00440000), 113 .mask = cpu_to_be32(0xffff0000), 114 }, 115 { 116 /* dhcp - lsb bytes of client hw address */ 117 .offset_type = BCAST_FILTER_OFFSET_IP_END, 118 .offset = 38, 119 .mask = cpu_to_be32(0xffffffff), 120 /* mark it as special field */ 121 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC), 122 }, 123 }, 124 }, 125 /* last filter must be empty */ 126 {}, 127 }; 128 #endif 129 130 static const struct cfg80211_pmsr_capabilities iwl_mvm_pmsr_capa = { 131 .max_peers = IWL_MVM_TOF_MAX_APS, 132 .report_ap_tsf = 1, 133 .randomize_mac_addr = 1, 134 135 .ftm = { 136 .supported = 1, 137 .asap = 1, 138 .non_asap = 1, 139 .request_lci = 1, 140 .request_civicloc = 1, 141 .trigger_based = 1, 142 .non_trigger_based = 1, 143 .max_bursts_exponent = -1, /* all supported */ 144 .max_ftms_per_burst = 0, /* no limits */ 145 .bandwidths = BIT(NL80211_CHAN_WIDTH_20_NOHT) | 146 BIT(NL80211_CHAN_WIDTH_20) | 147 BIT(NL80211_CHAN_WIDTH_40) | 148 BIT(NL80211_CHAN_WIDTH_80), 149 .preambles = BIT(NL80211_PREAMBLE_LEGACY) | 150 BIT(NL80211_PREAMBLE_HT) | 151 BIT(NL80211_PREAMBLE_VHT) | 152 BIT(NL80211_PREAMBLE_HE), 153 }, 154 }; 155 156 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 157 enum set_key_cmd cmd, 158 struct ieee80211_vif *vif, 159 struct ieee80211_sta *sta, 160 struct ieee80211_key_conf *key); 161 162 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm) 163 { 164 int i; 165 166 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts)); 167 for (i = 0; i < NUM_PHY_CTX; i++) { 168 mvm->phy_ctxts[i].id = i; 169 mvm->phy_ctxts[i].ref = 0; 170 } 171 } 172 173 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy, 174 const char *alpha2, 175 enum iwl_mcc_source src_id, 176 bool *changed) 177 { 178 struct ieee80211_regdomain *regd = NULL; 179 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 180 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 181 struct iwl_mcc_update_resp *resp; 182 u8 resp_ver; 183 184 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2); 185 186 lockdep_assert_held(&mvm->mutex); 187 188 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id); 189 if (IS_ERR_OR_NULL(resp)) { 190 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n", 191 PTR_ERR_OR_ZERO(resp)); 192 goto out; 193 } 194 195 if (changed) { 196 u32 status = le32_to_cpu(resp->status); 197 198 *changed = (status == MCC_RESP_NEW_CHAN_PROFILE || 199 status == MCC_RESP_ILLEGAL); 200 } 201 resp_ver = iwl_fw_lookup_notif_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, 202 MCC_UPDATE_CMD, 0); 203 IWL_DEBUG_LAR(mvm, "MCC update response version: %d\n", resp_ver); 204 205 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg, 206 __le32_to_cpu(resp->n_channels), 207 resp->channels, 208 __le16_to_cpu(resp->mcc), 209 __le16_to_cpu(resp->geo_info), 210 __le16_to_cpu(resp->cap), resp_ver); 211 /* Store the return source id */ 212 src_id = resp->source_id; 213 kfree(resp); 214 if (IS_ERR_OR_NULL(regd)) { 215 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n", 216 PTR_ERR_OR_ZERO(regd)); 217 goto out; 218 } 219 220 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n", 221 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id); 222 mvm->lar_regdom_set = true; 223 mvm->mcc_src = src_id; 224 225 out: 226 return regd; 227 } 228 229 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm) 230 { 231 bool changed; 232 struct ieee80211_regdomain *regd; 233 234 if (!iwl_mvm_is_lar_supported(mvm)) 235 return; 236 237 regd = iwl_mvm_get_current_regdomain(mvm, &changed); 238 if (!IS_ERR_OR_NULL(regd)) { 239 /* only update the regulatory core if changed */ 240 if (changed) 241 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd); 242 243 kfree(regd); 244 } 245 } 246 247 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm, 248 bool *changed) 249 { 250 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ", 251 iwl_mvm_is_wifi_mcc_supported(mvm) ? 252 MCC_SOURCE_GET_CURRENT : 253 MCC_SOURCE_OLD_FW, changed); 254 } 255 256 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm) 257 { 258 enum iwl_mcc_source used_src; 259 struct ieee80211_regdomain *regd; 260 int ret; 261 bool changed; 262 const struct ieee80211_regdomain *r = 263 rtnl_dereference(mvm->hw->wiphy->regd); 264 265 if (!r) 266 return -ENOENT; 267 268 /* save the last source in case we overwrite it below */ 269 used_src = mvm->mcc_src; 270 if (iwl_mvm_is_wifi_mcc_supported(mvm)) { 271 /* Notify the firmware we support wifi location updates */ 272 regd = iwl_mvm_get_current_regdomain(mvm, NULL); 273 if (!IS_ERR_OR_NULL(regd)) 274 kfree(regd); 275 } 276 277 /* Now set our last stored MCC and source */ 278 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src, 279 &changed); 280 if (IS_ERR_OR_NULL(regd)) 281 return -EIO; 282 283 /* update cfg80211 if the regdomain was changed */ 284 if (changed) 285 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd); 286 else 287 ret = 0; 288 289 kfree(regd); 290 return ret; 291 } 292 293 static const u8 he_if_types_ext_capa_sta[] = { 294 [0] = WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING, 295 [2] = WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT, 296 [7] = WLAN_EXT_CAPA8_OPMODE_NOTIF, 297 [9] = WLAN_EXT_CAPA10_TWT_REQUESTER_SUPPORT, 298 }; 299 300 static const struct wiphy_iftype_ext_capab he_iftypes_ext_capa[] = { 301 { 302 .iftype = NL80211_IFTYPE_STATION, 303 .extended_capabilities = he_if_types_ext_capa_sta, 304 .extended_capabilities_mask = he_if_types_ext_capa_sta, 305 .extended_capabilities_len = sizeof(he_if_types_ext_capa_sta), 306 }, 307 }; 308 309 static int 310 iwl_mvm_op_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant) 311 { 312 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 313 *tx_ant = iwl_mvm_get_valid_tx_ant(mvm); 314 *rx_ant = iwl_mvm_get_valid_rx_ant(mvm); 315 return 0; 316 } 317 318 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) 319 { 320 struct ieee80211_hw *hw = mvm->hw; 321 int num_mac, ret, i; 322 static const u32 mvm_ciphers[] = { 323 WLAN_CIPHER_SUITE_WEP40, 324 WLAN_CIPHER_SUITE_WEP104, 325 WLAN_CIPHER_SUITE_TKIP, 326 WLAN_CIPHER_SUITE_CCMP, 327 }; 328 #ifdef CONFIG_PM_SLEEP 329 bool unified = fw_has_capa(&mvm->fw->ucode_capa, 330 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 331 #endif 332 333 /* Tell mac80211 our characteristics */ 334 ieee80211_hw_set(hw, SIGNAL_DBM); 335 ieee80211_hw_set(hw, SPECTRUM_MGMT); 336 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 337 ieee80211_hw_set(hw, WANT_MONITOR_VIF); 338 ieee80211_hw_set(hw, SUPPORTS_PS); 339 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 340 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 341 ieee80211_hw_set(hw, TIMING_BEACON_ONLY); 342 ieee80211_hw_set(hw, CONNECTION_MONITOR); 343 ieee80211_hw_set(hw, CHANCTX_STA_CSA); 344 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); 345 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS); 346 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU); 347 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR); 348 ieee80211_hw_set(hw, DEAUTH_NEED_MGD_TX_PREP); 349 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW); 350 ieee80211_hw_set(hw, BUFF_MMPDU_TXQ); 351 ieee80211_hw_set(hw, STA_MMPDU_TXQ); 352 /* 353 * On older devices, enabling TX A-MSDU occasionally leads to 354 * something getting messed up, the command read from the FIFO 355 * gets out of sync and isn't a TX command, so that we have an 356 * assert EDC. 357 * 358 * It's not clear where the bug is, but since we didn't used to 359 * support A-MSDU until moving the mac80211 iTXQs, just leave it 360 * for older devices. We also don't see this issue on any newer 361 * devices. 362 */ 363 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_9000) 364 ieee80211_hw_set(hw, TX_AMSDU); 365 ieee80211_hw_set(hw, TX_FRAG_LIST); 366 367 if (iwl_mvm_has_tlc_offload(mvm)) { 368 ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW); 369 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 370 } 371 372 if (iwl_mvm_has_new_rx_api(mvm)) 373 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER); 374 375 if (fw_has_capa(&mvm->fw->ucode_capa, 376 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) { 377 ieee80211_hw_set(hw, AP_LINK_PS); 378 } else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) { 379 /* 380 * we absolutely need this for the new TX API since that comes 381 * with many more queues than the current code can deal with 382 * for station powersave 383 */ 384 return -EINVAL; 385 } 386 387 if (mvm->trans->num_rx_queues > 1) 388 ieee80211_hw_set(hw, USES_RSS); 389 390 if (mvm->trans->max_skb_frags) 391 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG; 392 393 hw->queues = IEEE80211_MAX_QUEUES; 394 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE; 395 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC | 396 IEEE80211_RADIOTAP_MCS_HAVE_STBC; 397 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC | 398 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED; 399 400 hw->radiotap_timestamp.units_pos = 401 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US | 402 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ; 403 /* this is the case for CCK frames, it's better (only 8) for OFDM */ 404 hw->radiotap_timestamp.accuracy = 22; 405 406 if (!iwl_mvm_has_tlc_offload(mvm)) 407 hw->rate_control_algorithm = RS_NAME; 408 409 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES; 410 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP; 411 hw->max_tx_fragments = mvm->trans->max_skb_frags; 412 413 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6); 414 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers)); 415 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers); 416 hw->wiphy->cipher_suites = mvm->ciphers; 417 418 if (iwl_mvm_has_new_rx_api(mvm)) { 419 mvm->ciphers[hw->wiphy->n_cipher_suites] = 420 WLAN_CIPHER_SUITE_GCMP; 421 hw->wiphy->n_cipher_suites++; 422 mvm->ciphers[hw->wiphy->n_cipher_suites] = 423 WLAN_CIPHER_SUITE_GCMP_256; 424 hw->wiphy->n_cipher_suites++; 425 } 426 427 if (iwlwifi_mod_params.swcrypto) 428 IWL_ERR(mvm, 429 "iwlmvm doesn't allow to disable HW crypto, check swcrypto module parameter\n"); 430 if (!iwlwifi_mod_params.bt_coex_active) 431 IWL_ERR(mvm, 432 "iwlmvm doesn't allow to disable BT Coex, check bt_coex_active module parameter\n"); 433 434 ieee80211_hw_set(hw, MFP_CAPABLE); 435 mvm->ciphers[hw->wiphy->n_cipher_suites] = WLAN_CIPHER_SUITE_AES_CMAC; 436 hw->wiphy->n_cipher_suites++; 437 if (iwl_mvm_has_new_rx_api(mvm)) { 438 mvm->ciphers[hw->wiphy->n_cipher_suites] = 439 WLAN_CIPHER_SUITE_BIP_GMAC_128; 440 hw->wiphy->n_cipher_suites++; 441 mvm->ciphers[hw->wiphy->n_cipher_suites] = 442 WLAN_CIPHER_SUITE_BIP_GMAC_256; 443 hw->wiphy->n_cipher_suites++; 444 } 445 446 /* currently FW API supports only one optional cipher scheme */ 447 if (mvm->fw->cs[0].cipher) { 448 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0]; 449 struct ieee80211_cipher_scheme *cs = &mvm->cs[0]; 450 451 mvm->hw->n_cipher_schemes = 1; 452 453 cs->cipher = le32_to_cpu(fwcs->cipher); 454 cs->iftype = BIT(NL80211_IFTYPE_STATION); 455 cs->hdr_len = fwcs->hdr_len; 456 cs->pn_len = fwcs->pn_len; 457 cs->pn_off = fwcs->pn_off; 458 cs->key_idx_off = fwcs->key_idx_off; 459 cs->key_idx_mask = fwcs->key_idx_mask; 460 cs->key_idx_shift = fwcs->key_idx_shift; 461 cs->mic_len = fwcs->mic_len; 462 463 mvm->hw->cipher_schemes = mvm->cs; 464 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher; 465 hw->wiphy->n_cipher_suites++; 466 } 467 468 if (fw_has_capa(&mvm->fw->ucode_capa, 469 IWL_UCODE_TLV_CAPA_FTM_CALIBRATED)) { 470 wiphy_ext_feature_set(hw->wiphy, 471 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER); 472 hw->wiphy->pmsr_capa = &iwl_mvm_pmsr_capa; 473 } 474 475 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS); 476 hw->wiphy->features |= 477 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR | 478 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR | 479 NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 480 481 hw->sta_data_size = sizeof(struct iwl_mvm_sta); 482 hw->vif_data_size = sizeof(struct iwl_mvm_vif); 483 hw->chanctx_data_size = sizeof(u16); 484 hw->txq_data_size = sizeof(struct iwl_mvm_txq); 485 486 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 487 BIT(NL80211_IFTYPE_P2P_CLIENT) | 488 BIT(NL80211_IFTYPE_AP) | 489 BIT(NL80211_IFTYPE_P2P_GO) | 490 BIT(NL80211_IFTYPE_P2P_DEVICE) | 491 BIT(NL80211_IFTYPE_ADHOC); 492 493 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; 494 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS); 495 496 /* The new Tx API does not allow to pass the key or keyid of a MPDU to 497 * the hw, preventing us to control which key(id) to use per MPDU. 498 * Till that's fixed we can't use Extended Key ID for the newer cards. 499 */ 500 if (!iwl_mvm_has_new_tx_api(mvm)) 501 wiphy_ext_feature_set(hw->wiphy, 502 NL80211_EXT_FEATURE_EXT_KEY_ID); 503 hw->wiphy->features |= NL80211_FEATURE_HT_IBSS; 504 505 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR; 506 if (iwl_mvm_is_lar_supported(mvm)) 507 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED; 508 else 509 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | 510 REGULATORY_DISABLE_BEACON_HINTS; 511 512 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; 513 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; 514 hw->wiphy->flags |= WIPHY_FLAG_SPLIT_SCAN_6GHZ; 515 516 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations; 517 hw->wiphy->n_iface_combinations = 518 ARRAY_SIZE(iwl_mvm_iface_combinations); 519 520 hw->wiphy->max_remain_on_channel_duration = 10000; 521 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; 522 523 /* Extract MAC address */ 524 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN); 525 hw->wiphy->addresses = mvm->addresses; 526 hw->wiphy->n_addresses = 1; 527 528 /* Extract additional MAC addresses if available */ 529 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ? 530 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1; 531 532 for (i = 1; i < num_mac; i++) { 533 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr, 534 ETH_ALEN); 535 mvm->addresses[i].addr[5]++; 536 hw->wiphy->n_addresses++; 537 } 538 539 iwl_mvm_reset_phy_ctxts(mvm); 540 541 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm); 542 543 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; 544 545 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK); 546 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) || 547 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK)); 548 549 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 550 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS; 551 else 552 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS; 553 554 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels) 555 hw->wiphy->bands[NL80211_BAND_2GHZ] = 556 &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 557 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) { 558 hw->wiphy->bands[NL80211_BAND_5GHZ] = 559 &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 560 561 if (fw_has_capa(&mvm->fw->ucode_capa, 562 IWL_UCODE_TLV_CAPA_BEAMFORMER) && 563 fw_has_api(&mvm->fw->ucode_capa, 564 IWL_UCODE_TLV_API_LQ_SS_PARAMS)) 565 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |= 566 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE; 567 } 568 if (fw_has_capa(&mvm->fw->ucode_capa, 569 IWL_UCODE_TLV_CAPA_PSC_CHAN_SUPPORT) && 570 mvm->nvm_data->bands[NL80211_BAND_6GHZ].n_channels) 571 hw->wiphy->bands[NL80211_BAND_6GHZ] = 572 &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; 573 574 hw->wiphy->hw_version = mvm->trans->hw_id; 575 576 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 577 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; 578 else 579 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; 580 581 hw->wiphy->max_sched_scan_reqs = 1; 582 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX; 583 hw->wiphy->max_match_sets = iwl_umac_scan_get_max_profiles(mvm->fw); 584 /* we create the 802.11 header and zero length SSID IE. */ 585 hw->wiphy->max_sched_scan_ie_len = 586 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2; 587 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS; 588 hw->wiphy->max_sched_scan_plan_interval = U16_MAX; 589 590 /* 591 * the firmware uses u8 for num of iterations, but 0xff is saved for 592 * infinite loop, so the maximum number of iterations is actually 254. 593 */ 594 hw->wiphy->max_sched_scan_plan_iterations = 254; 595 596 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN | 597 NL80211_FEATURE_LOW_PRIORITY_SCAN | 598 NL80211_FEATURE_P2P_GO_OPPPS | 599 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | 600 NL80211_FEATURE_DYNAMIC_SMPS | 601 NL80211_FEATURE_STATIC_SMPS | 602 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION; 603 604 if (fw_has_capa(&mvm->fw->ucode_capa, 605 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)) 606 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION; 607 if (fw_has_capa(&mvm->fw->ucode_capa, 608 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)) 609 hw->wiphy->features |= NL80211_FEATURE_QUIET; 610 611 if (fw_has_capa(&mvm->fw->ucode_capa, 612 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) 613 hw->wiphy->features |= 614 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES; 615 616 if (fw_has_capa(&mvm->fw->ucode_capa, 617 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 618 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES; 619 620 if (iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, 621 WOWLAN_KEK_KCK_MATERIAL, 622 IWL_FW_CMD_VER_UNKNOWN) == 3) 623 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK; 624 625 if (fw_has_api(&mvm->fw->ucode_capa, 626 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) { 627 wiphy_ext_feature_set(hw->wiphy, 628 NL80211_EXT_FEATURE_SCAN_START_TIME); 629 wiphy_ext_feature_set(hw->wiphy, 630 NL80211_EXT_FEATURE_BSS_PARENT_TSF); 631 } 632 633 if (iwl_mvm_is_oce_supported(mvm)) { 634 wiphy_ext_feature_set(hw->wiphy, 635 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP); 636 wiphy_ext_feature_set(hw->wiphy, 637 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME); 638 wiphy_ext_feature_set(hw->wiphy, 639 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION); 640 wiphy_ext_feature_set(hw->wiphy, 641 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE); 642 } 643 644 if (mvm->nvm_data->sku_cap_11ax_enable && 645 !iwlwifi_mod_params.disable_11ax) { 646 hw->wiphy->iftype_ext_capab = he_iftypes_ext_capa; 647 hw->wiphy->num_iftype_ext_capab = 648 ARRAY_SIZE(he_iftypes_ext_capa); 649 650 ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID); 651 ieee80211_hw_set(hw, SUPPORTS_ONLY_HE_MULTI_BSSID); 652 } 653 654 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; 655 656 #ifdef CONFIG_PM_SLEEP 657 if ((unified || mvm->fw->img[IWL_UCODE_WOWLAN].num_sec) && 658 mvm->trans->ops->d3_suspend && 659 mvm->trans->ops->d3_resume && 660 device_can_wakeup(mvm->trans->dev)) { 661 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT | 662 WIPHY_WOWLAN_DISCONNECT | 663 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 664 WIPHY_WOWLAN_RFKILL_RELEASE | 665 WIPHY_WOWLAN_NET_DETECT; 666 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 667 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 668 WIPHY_WOWLAN_4WAY_HANDSHAKE; 669 670 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS; 671 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN; 672 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN; 673 mvm->wowlan.max_nd_match_sets = 674 iwl_umac_scan_get_max_profiles(mvm->fw); 675 hw->wiphy->wowlan = &mvm->wowlan; 676 } 677 #endif 678 679 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 680 /* assign default bcast filtering configuration */ 681 mvm->bcast_filters = iwl_mvm_default_bcast_filters; 682 #endif 683 684 ret = iwl_mvm_leds_init(mvm); 685 if (ret) 686 return ret; 687 688 if (fw_has_capa(&mvm->fw->ucode_capa, 689 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) { 690 IWL_DEBUG_TDLS(mvm, "TDLS supported\n"); 691 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS; 692 ieee80211_hw_set(hw, TDLS_WIDER_BW); 693 } 694 695 if (fw_has_capa(&mvm->fw->ucode_capa, 696 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) { 697 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n"); 698 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH; 699 } 700 701 hw->netdev_features |= mvm->cfg->features; 702 if (!iwl_mvm_is_csum_supported(mvm)) 703 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS | 704 NETIF_F_RXCSUM); 705 706 if (mvm->cfg->vht_mu_mimo_supported) 707 wiphy_ext_feature_set(hw->wiphy, 708 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER); 709 710 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_PROTECTED_TWT)) 711 wiphy_ext_feature_set(hw->wiphy, 712 NL80211_EXT_FEATURE_PROTECTED_TWT); 713 714 hw->wiphy->available_antennas_tx = iwl_mvm_get_valid_tx_ant(mvm); 715 hw->wiphy->available_antennas_rx = iwl_mvm_get_valid_rx_ant(mvm); 716 717 ret = ieee80211_register_hw(mvm->hw); 718 if (ret) { 719 iwl_mvm_leds_exit(mvm); 720 } 721 722 return ret; 723 } 724 725 static void iwl_mvm_tx_skb(struct iwl_mvm *mvm, struct sk_buff *skb, 726 struct ieee80211_sta *sta) 727 { 728 if (likely(sta)) { 729 if (likely(iwl_mvm_tx_skb_sta(mvm, skb, sta) == 0)) 730 return; 731 } else { 732 if (likely(iwl_mvm_tx_skb_non_sta(mvm, skb) == 0)) 733 return; 734 } 735 736 ieee80211_free_txskb(mvm->hw, skb); 737 } 738 739 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw, 740 struct ieee80211_tx_control *control, 741 struct sk_buff *skb) 742 { 743 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 744 struct ieee80211_sta *sta = control->sta; 745 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 746 struct ieee80211_hdr *hdr = (void *)skb->data; 747 bool offchannel = IEEE80211_SKB_CB(skb)->flags & 748 IEEE80211_TX_CTL_TX_OFFCHAN; 749 750 if (iwl_mvm_is_radio_killed(mvm)) { 751 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n"); 752 goto drop; 753 } 754 755 if (offchannel && 756 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) && 757 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status)) 758 goto drop; 759 760 /* treat non-bufferable MMPDUs on AP interfaces as broadcast */ 761 if ((info->control.vif->type == NL80211_IFTYPE_AP || 762 info->control.vif->type == NL80211_IFTYPE_ADHOC) && 763 ieee80211_is_mgmt(hdr->frame_control) && 764 !ieee80211_is_bufferable_mmpdu(hdr->frame_control)) 765 sta = NULL; 766 767 /* If there is no sta, and it's not offchannel - send through AP */ 768 if (!sta && info->control.vif->type == NL80211_IFTYPE_STATION && 769 !offchannel) { 770 struct iwl_mvm_vif *mvmvif = 771 iwl_mvm_vif_from_mac80211(info->control.vif); 772 u8 ap_sta_id = READ_ONCE(mvmvif->ap_sta_id); 773 774 if (ap_sta_id < mvm->fw->ucode_capa.num_stations) { 775 /* mac80211 holds rcu read lock */ 776 sta = rcu_dereference(mvm->fw_id_to_mac_id[ap_sta_id]); 777 if (IS_ERR_OR_NULL(sta)) 778 goto drop; 779 } 780 } 781 782 iwl_mvm_tx_skb(mvm, skb, sta); 783 return; 784 drop: 785 ieee80211_free_txskb(hw, skb); 786 } 787 788 void iwl_mvm_mac_itxq_xmit(struct ieee80211_hw *hw, struct ieee80211_txq *txq) 789 { 790 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 791 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq); 792 struct sk_buff *skb = NULL; 793 794 /* 795 * No need for threads to be pending here, they can leave the first 796 * taker all the work. 797 * 798 * mvmtxq->tx_request logic: 799 * 800 * If 0, no one is currently TXing, set to 1 to indicate current thread 801 * will now start TX and other threads should quit. 802 * 803 * If 1, another thread is currently TXing, set to 2 to indicate to 804 * that thread that there was another request. Since that request may 805 * have raced with the check whether the queue is empty, the TXing 806 * thread should check the queue's status one more time before leaving. 807 * This check is done in order to not leave any TX hanging in the queue 808 * until the next TX invocation (which may not even happen). 809 * 810 * If 2, another thread is currently TXing, and it will already double 811 * check the queue, so do nothing. 812 */ 813 if (atomic_fetch_add_unless(&mvmtxq->tx_request, 1, 2)) 814 return; 815 816 rcu_read_lock(); 817 do { 818 while (likely(!mvmtxq->stopped && 819 (mvm->trans->system_pm_mode == 820 IWL_PLAT_PM_MODE_DISABLED))) { 821 skb = ieee80211_tx_dequeue(hw, txq); 822 823 if (!skb) { 824 if (txq->sta) 825 IWL_DEBUG_TX(mvm, 826 "TXQ of sta %pM tid %d is now empty\n", 827 txq->sta->addr, 828 txq->tid); 829 break; 830 } 831 832 iwl_mvm_tx_skb(mvm, skb, txq->sta); 833 } 834 } while (atomic_dec_return(&mvmtxq->tx_request)); 835 rcu_read_unlock(); 836 } 837 838 static void iwl_mvm_mac_wake_tx_queue(struct ieee80211_hw *hw, 839 struct ieee80211_txq *txq) 840 { 841 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 842 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq); 843 844 /* 845 * Please note that racing is handled very carefully here: 846 * mvmtxq->txq_id is updated during allocation, and mvmtxq->list is 847 * deleted afterwards. 848 * This means that if: 849 * mvmtxq->txq_id != INVALID_QUEUE && list_empty(&mvmtxq->list): 850 * queue is allocated and we can TX. 851 * mvmtxq->txq_id != INVALID_QUEUE && !list_empty(&mvmtxq->list): 852 * a race, should defer the frame. 853 * mvmtxq->txq_id == INVALID_QUEUE && list_empty(&mvmtxq->list): 854 * need to allocate the queue and defer the frame. 855 * mvmtxq->txq_id == INVALID_QUEUE && !list_empty(&mvmtxq->list): 856 * queue is already scheduled for allocation, no need to allocate, 857 * should defer the frame. 858 */ 859 860 /* If the queue is allocated TX and return. */ 861 if (!txq->sta || mvmtxq->txq_id != IWL_MVM_INVALID_QUEUE) { 862 /* 863 * Check that list is empty to avoid a race where txq_id is 864 * already updated, but the queue allocation work wasn't 865 * finished 866 */ 867 if (unlikely(txq->sta && !list_empty(&mvmtxq->list))) 868 return; 869 870 iwl_mvm_mac_itxq_xmit(hw, txq); 871 return; 872 } 873 874 /* The list is being deleted only after the queue is fully allocated. */ 875 if (!list_empty(&mvmtxq->list)) 876 return; 877 878 list_add_tail(&mvmtxq->list, &mvm->add_stream_txqs); 879 schedule_work(&mvm->add_stream_wk); 880 } 881 882 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \ 883 do { \ 884 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \ 885 break; \ 886 iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt); \ 887 } while (0) 888 889 static void 890 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 891 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn, 892 enum ieee80211_ampdu_mlme_action action) 893 { 894 struct iwl_fw_dbg_trigger_tlv *trig; 895 struct iwl_fw_dbg_trigger_ba *ba_trig; 896 897 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 898 FW_DBG_TRIGGER_BA); 899 if (!trig) 900 return; 901 902 ba_trig = (void *)trig->data; 903 904 switch (action) { 905 case IEEE80211_AMPDU_TX_OPERATIONAL: { 906 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 907 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 908 909 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid, 910 "TX AGG START: MAC %pM tid %d ssn %d\n", 911 sta->addr, tid, tid_data->ssn); 912 break; 913 } 914 case IEEE80211_AMPDU_TX_STOP_CONT: 915 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid, 916 "TX AGG STOP: MAC %pM tid %d\n", 917 sta->addr, tid); 918 break; 919 case IEEE80211_AMPDU_RX_START: 920 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid, 921 "RX AGG START: MAC %pM tid %d ssn %d\n", 922 sta->addr, tid, rx_ba_ssn); 923 break; 924 case IEEE80211_AMPDU_RX_STOP: 925 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid, 926 "RX AGG STOP: MAC %pM tid %d\n", 927 sta->addr, tid); 928 break; 929 default: 930 break; 931 } 932 } 933 934 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw, 935 struct ieee80211_vif *vif, 936 struct ieee80211_ampdu_params *params) 937 { 938 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 939 int ret; 940 struct ieee80211_sta *sta = params->sta; 941 enum ieee80211_ampdu_mlme_action action = params->action; 942 u16 tid = params->tid; 943 u16 *ssn = ¶ms->ssn; 944 u16 buf_size = params->buf_size; 945 bool amsdu = params->amsdu; 946 u16 timeout = params->timeout; 947 948 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n", 949 sta->addr, tid, action); 950 951 if (!(mvm->nvm_data->sku_cap_11n_enable)) 952 return -EACCES; 953 954 mutex_lock(&mvm->mutex); 955 956 switch (action) { 957 case IEEE80211_AMPDU_RX_START: 958 if (iwl_mvm_vif_from_mac80211(vif)->ap_sta_id == 959 iwl_mvm_sta_from_mac80211(sta)->sta_id) { 960 struct iwl_mvm_vif *mvmvif; 961 u16 macid = iwl_mvm_vif_from_mac80211(vif)->id; 962 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid]; 963 964 mdata->opened_rx_ba_sessions = true; 965 mvmvif = iwl_mvm_vif_from_mac80211(vif); 966 cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk); 967 } 968 if (!iwl_enable_rx_ampdu()) { 969 ret = -EINVAL; 970 break; 971 } 972 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size, 973 timeout); 974 break; 975 case IEEE80211_AMPDU_RX_STOP: 976 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size, 977 timeout); 978 break; 979 case IEEE80211_AMPDU_TX_START: 980 if (!iwl_enable_tx_ampdu()) { 981 ret = -EINVAL; 982 break; 983 } 984 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn); 985 break; 986 case IEEE80211_AMPDU_TX_STOP_CONT: 987 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid); 988 break; 989 case IEEE80211_AMPDU_TX_STOP_FLUSH: 990 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 991 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid); 992 break; 993 case IEEE80211_AMPDU_TX_OPERATIONAL: 994 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, 995 buf_size, amsdu); 996 break; 997 default: 998 WARN_ON_ONCE(1); 999 ret = -EINVAL; 1000 break; 1001 } 1002 1003 if (!ret) { 1004 u16 rx_ba_ssn = 0; 1005 1006 if (action == IEEE80211_AMPDU_RX_START) 1007 rx_ba_ssn = *ssn; 1008 1009 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid, 1010 rx_ba_ssn, action); 1011 } 1012 mutex_unlock(&mvm->mutex); 1013 1014 return ret; 1015 } 1016 1017 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac, 1018 struct ieee80211_vif *vif) 1019 { 1020 struct iwl_mvm *mvm = data; 1021 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1022 1023 mvmvif->uploaded = false; 1024 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1025 1026 spin_lock_bh(&mvm->time_event_lock); 1027 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data); 1028 spin_unlock_bh(&mvm->time_event_lock); 1029 1030 mvmvif->phy_ctxt = NULL; 1031 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data)); 1032 memset(&mvmvif->probe_resp_data, 0, sizeof(mvmvif->probe_resp_data)); 1033 } 1034 1035 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) 1036 { 1037 iwl_mvm_stop_device(mvm); 1038 1039 mvm->cur_aid = 0; 1040 1041 mvm->scan_status = 0; 1042 mvm->ps_disabled = false; 1043 mvm->rfkill_safe_init_done = false; 1044 1045 /* just in case one was running */ 1046 iwl_mvm_cleanup_roc_te(mvm); 1047 ieee80211_remain_on_channel_expired(mvm->hw); 1048 1049 iwl_mvm_ftm_restart(mvm); 1050 1051 /* 1052 * cleanup all interfaces, even inactive ones, as some might have 1053 * gone down during the HW restart 1054 */ 1055 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm); 1056 1057 mvm->p2p_device_vif = NULL; 1058 1059 iwl_mvm_reset_phy_ctxts(mvm); 1060 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 1061 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif)); 1062 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd)); 1063 1064 ieee80211_wake_queues(mvm->hw); 1065 1066 mvm->vif_count = 0; 1067 mvm->rx_ba_sessions = 0; 1068 mvm->fwrt.dump.conf = FW_DBG_INVALID; 1069 mvm->monitor_on = false; 1070 1071 /* keep statistics ticking */ 1072 iwl_mvm_accu_radio_stats(mvm); 1073 } 1074 1075 int __iwl_mvm_mac_start(struct iwl_mvm *mvm) 1076 { 1077 int ret; 1078 1079 lockdep_assert_held(&mvm->mutex); 1080 1081 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) { 1082 /* 1083 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART 1084 * so later code will - from now on - see that we're doing it. 1085 */ 1086 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1087 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 1088 /* Clean up some internal and mac80211 state on restart */ 1089 iwl_mvm_restart_cleanup(mvm); 1090 } 1091 ret = iwl_mvm_up(mvm); 1092 1093 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_POST_INIT, 1094 NULL); 1095 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_PERIODIC, 1096 NULL); 1097 1098 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1099 /* Something went wrong - we need to finish some cleanup 1100 * that normally iwl_mvm_mac_restart_complete() below 1101 * would do. 1102 */ 1103 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1104 } 1105 1106 return ret; 1107 } 1108 1109 static int iwl_mvm_mac_start(struct ieee80211_hw *hw) 1110 { 1111 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1112 int ret; 1113 1114 mutex_lock(&mvm->mutex); 1115 ret = __iwl_mvm_mac_start(mvm); 1116 mutex_unlock(&mvm->mutex); 1117 1118 return ret; 1119 } 1120 1121 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm) 1122 { 1123 int ret; 1124 1125 mutex_lock(&mvm->mutex); 1126 1127 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1128 1129 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1130 if (ret) 1131 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n", 1132 ret); 1133 1134 iwl_mvm_send_recovery_cmd(mvm, ERROR_RECOVERY_END_OF_RECOVERY); 1135 1136 /* 1137 * If we have TDLS peers, remove them. We don't know the last seqno/PN 1138 * of packets the FW sent out, so we must reconnect. 1139 */ 1140 iwl_mvm_teardown_tdls_peers(mvm); 1141 1142 mutex_unlock(&mvm->mutex); 1143 } 1144 1145 static void 1146 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw, 1147 enum ieee80211_reconfig_type reconfig_type) 1148 { 1149 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1150 1151 switch (reconfig_type) { 1152 case IEEE80211_RECONFIG_TYPE_RESTART: 1153 iwl_mvm_restart_complete(mvm); 1154 break; 1155 case IEEE80211_RECONFIG_TYPE_SUSPEND: 1156 break; 1157 } 1158 } 1159 1160 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm) 1161 { 1162 lockdep_assert_held(&mvm->mutex); 1163 1164 iwl_mvm_ftm_initiator_smooth_stop(mvm); 1165 1166 /* firmware counters are obviously reset now, but we shouldn't 1167 * partially track so also clear the fw_reset_accu counters. 1168 */ 1169 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats)); 1170 1171 /* async_handlers_wk is now blocked */ 1172 1173 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, ADD_STA, 0) < 12) 1174 iwl_mvm_rm_aux_sta(mvm); 1175 1176 iwl_mvm_stop_device(mvm); 1177 1178 iwl_mvm_async_handlers_purge(mvm); 1179 /* async_handlers_list is empty and will stay empty: HW is stopped */ 1180 1181 /* 1182 * Clear IN_HW_RESTART and HW_RESTART_REQUESTED flag when stopping the 1183 * hw (as restart_complete() won't be called in this case) and mac80211 1184 * won't execute the restart. 1185 * But make sure to cleanup interfaces that have gone down before/during 1186 * HW restart was requested. 1187 */ 1188 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 1189 test_and_clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 1190 &mvm->status)) 1191 ieee80211_iterate_interfaces(mvm->hw, 0, 1192 iwl_mvm_cleanup_iterator, mvm); 1193 1194 /* We shouldn't have any UIDs still set. Loop over all the UIDs to 1195 * make sure there's nothing left there and warn if any is found. 1196 */ 1197 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 1198 int i; 1199 1200 for (i = 0; i < mvm->max_scans; i++) { 1201 if (WARN_ONCE(mvm->scan_uid_status[i], 1202 "UMAC scan UID %d status was not cleaned\n", 1203 i)) 1204 mvm->scan_uid_status[i] = 0; 1205 } 1206 } 1207 } 1208 1209 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw) 1210 { 1211 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1212 1213 flush_work(&mvm->async_handlers_wk); 1214 flush_work(&mvm->add_stream_wk); 1215 1216 /* 1217 * Lock and clear the firmware running bit here already, so that 1218 * new commands coming in elsewhere, e.g. from debugfs, will not 1219 * be able to proceed. This is important here because one of those 1220 * debugfs files causes the firmware dump to be triggered, and if we 1221 * don't stop debugfs accesses before canceling that it could be 1222 * retriggered after we flush it but before we've cleared the bit. 1223 */ 1224 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status); 1225 1226 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork); 1227 cancel_delayed_work_sync(&mvm->scan_timeout_dwork); 1228 1229 /* 1230 * The work item could be running or queued if the 1231 * ROC time event stops just as we get here. 1232 */ 1233 flush_work(&mvm->roc_done_wk); 1234 1235 mutex_lock(&mvm->mutex); 1236 __iwl_mvm_mac_stop(mvm); 1237 mutex_unlock(&mvm->mutex); 1238 1239 /* 1240 * The worker might have been waiting for the mutex, let it run and 1241 * discover that its list is now empty. 1242 */ 1243 cancel_work_sync(&mvm->async_handlers_wk); 1244 } 1245 1246 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm) 1247 { 1248 u16 i; 1249 1250 lockdep_assert_held(&mvm->mutex); 1251 1252 for (i = 0; i < NUM_PHY_CTX; i++) 1253 if (!mvm->phy_ctxts[i].ref) 1254 return &mvm->phy_ctxts[i]; 1255 1256 IWL_ERR(mvm, "No available PHY context\n"); 1257 return NULL; 1258 } 1259 1260 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1261 s16 tx_power) 1262 { 1263 int len; 1264 struct iwl_dev_tx_power_cmd cmd = { 1265 .common.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC), 1266 .common.mac_context_id = 1267 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id), 1268 .common.pwr_restriction = cpu_to_le16(8 * tx_power), 1269 }; 1270 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 1271 REDUCE_TX_POWER_CMD, 1272 IWL_FW_CMD_VER_UNKNOWN); 1273 1274 if (tx_power == IWL_DEFAULT_MAX_TX_POWER) 1275 cmd.common.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER); 1276 1277 if (cmd_ver == 6) 1278 len = sizeof(cmd.v6); 1279 else if (fw_has_api(&mvm->fw->ucode_capa, 1280 IWL_UCODE_TLV_API_REDUCE_TX_POWER)) 1281 len = sizeof(cmd.v5); 1282 else if (fw_has_capa(&mvm->fw->ucode_capa, 1283 IWL_UCODE_TLV_CAPA_TX_POWER_ACK)) 1284 len = sizeof(cmd.v4); 1285 else 1286 len = sizeof(cmd.v3); 1287 1288 /* all structs have the same common part, add it */ 1289 len += sizeof(cmd.common); 1290 1291 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd); 1292 } 1293 1294 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw, 1295 struct ieee80211_vif *vif) 1296 { 1297 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1298 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1299 int ret; 1300 1301 mutex_lock(&mvm->mutex); 1302 1303 if (vif->type == NL80211_IFTYPE_STATION) { 1304 struct iwl_mvm_sta *mvmsta; 1305 1306 mvmvif->csa_bcn_pending = false; 1307 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, 1308 mvmvif->ap_sta_id); 1309 1310 if (WARN_ON(!mvmsta)) { 1311 ret = -EIO; 1312 goto out_unlock; 1313 } 1314 1315 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false); 1316 1317 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1318 1319 if (!fw_has_capa(&mvm->fw->ucode_capa, 1320 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { 1321 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 1322 if (ret) 1323 goto out_unlock; 1324 1325 iwl_mvm_stop_session_protection(mvm, vif); 1326 } 1327 } 1328 1329 mvmvif->ps_disabled = false; 1330 1331 ret = iwl_mvm_power_update_ps(mvm); 1332 1333 out_unlock: 1334 if (mvmvif->csa_failed) 1335 ret = -EIO; 1336 mutex_unlock(&mvm->mutex); 1337 1338 return ret; 1339 } 1340 1341 static void iwl_mvm_abort_channel_switch(struct ieee80211_hw *hw, 1342 struct ieee80211_vif *vif) 1343 { 1344 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1345 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1346 struct iwl_chan_switch_te_cmd cmd = { 1347 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 1348 mvmvif->color)), 1349 .action = cpu_to_le32(FW_CTXT_ACTION_REMOVE), 1350 }; 1351 1352 IWL_DEBUG_MAC80211(mvm, "Abort CSA on mac %d\n", mvmvif->id); 1353 1354 mutex_lock(&mvm->mutex); 1355 if (!fw_has_capa(&mvm->fw->ucode_capa, 1356 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) 1357 iwl_mvm_remove_csa_period(mvm, vif); 1358 else 1359 WARN_ON(iwl_mvm_send_cmd_pdu(mvm, 1360 WIDE_ID(MAC_CONF_GROUP, 1361 CHANNEL_SWITCH_TIME_EVENT_CMD), 1362 0, sizeof(cmd), &cmd)); 1363 mvmvif->csa_failed = true; 1364 mutex_unlock(&mvm->mutex); 1365 1366 iwl_mvm_post_channel_switch(hw, vif); 1367 } 1368 1369 static void iwl_mvm_channel_switch_disconnect_wk(struct work_struct *wk) 1370 { 1371 struct iwl_mvm *mvm; 1372 struct iwl_mvm_vif *mvmvif; 1373 struct ieee80211_vif *vif; 1374 1375 mvmvif = container_of(wk, struct iwl_mvm_vif, csa_work.work); 1376 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 1377 mvm = mvmvif->mvm; 1378 1379 iwl_mvm_abort_channel_switch(mvm->hw, vif); 1380 ieee80211_chswitch_done(vif, false); 1381 } 1382 1383 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, 1384 struct ieee80211_vif *vif) 1385 { 1386 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1387 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1388 int ret; 1389 1390 mvmvif->mvm = mvm; 1391 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); 1392 1393 /* 1394 * Not much to do here. The stack will not allow interface 1395 * types or combinations that we didn't advertise, so we 1396 * don't really have to check the types. 1397 */ 1398 1399 mutex_lock(&mvm->mutex); 1400 1401 /* make sure that beacon statistics don't go backwards with FW reset */ 1402 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1403 mvmvif->beacon_stats.accu_num_beacons += 1404 mvmvif->beacon_stats.num_beacons; 1405 1406 /* Allocate resources for the MAC context, and add it to the fw */ 1407 ret = iwl_mvm_mac_ctxt_init(mvm, vif); 1408 if (ret) 1409 goto out_unlock; 1410 1411 rcu_assign_pointer(mvm->vif_id_to_mac[mvmvif->id], vif); 1412 1413 /* Counting number of interfaces is needed for legacy PM */ 1414 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1415 mvm->vif_count++; 1416 1417 /* 1418 * The AP binding flow can be done only after the beacon 1419 * template is configured (which happens only in the mac80211 1420 * start_ap() flow), and adding the broadcast station can happen 1421 * only after the binding. 1422 * In addition, since modifying the MAC before adding a bcast 1423 * station is not allowed by the FW, delay the adding of MAC context to 1424 * the point where we can also add the bcast station. 1425 * In short: there's not much we can do at this point, other than 1426 * allocating resources :) 1427 */ 1428 if (vif->type == NL80211_IFTYPE_AP || 1429 vif->type == NL80211_IFTYPE_ADHOC) { 1430 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 1431 if (ret) { 1432 IWL_ERR(mvm, "Failed to allocate bcast sta\n"); 1433 goto out_release; 1434 } 1435 1436 /* 1437 * Only queue for this station is the mcast queue, 1438 * which shouldn't be in TFD mask anyway 1439 */ 1440 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta, 1441 0, vif->type, 1442 IWL_STA_MULTICAST); 1443 if (ret) 1444 goto out_release; 1445 1446 iwl_mvm_vif_dbgfs_register(mvm, vif); 1447 goto out_unlock; 1448 } 1449 1450 mvmvif->features |= hw->netdev_features; 1451 1452 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 1453 if (ret) 1454 goto out_release; 1455 1456 ret = iwl_mvm_power_update_mac(mvm); 1457 if (ret) 1458 goto out_remove_mac; 1459 1460 /* beacon filtering */ 1461 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 1462 if (ret) 1463 goto out_remove_mac; 1464 1465 if (!mvm->bf_allowed_vif && 1466 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) { 1467 mvm->bf_allowed_vif = mvmvif; 1468 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 1469 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 1470 } 1471 1472 /* 1473 * P2P_DEVICE interface does not have a channel context assigned to it, 1474 * so a dedicated PHY context is allocated to it and the corresponding 1475 * MAC context is bound to it at this stage. 1476 */ 1477 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1478 1479 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 1480 if (!mvmvif->phy_ctxt) { 1481 ret = -ENOSPC; 1482 goto out_free_bf; 1483 } 1484 1485 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 1486 ret = iwl_mvm_binding_add_vif(mvm, vif); 1487 if (ret) 1488 goto out_unref_phy; 1489 1490 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif); 1491 if (ret) 1492 goto out_unbind; 1493 1494 /* Save a pointer to p2p device vif, so it can later be used to 1495 * update the p2p device MAC when a GO is started/stopped */ 1496 mvm->p2p_device_vif = vif; 1497 } 1498 1499 iwl_mvm_tcm_add_vif(mvm, vif); 1500 INIT_DELAYED_WORK(&mvmvif->csa_work, 1501 iwl_mvm_channel_switch_disconnect_wk); 1502 1503 if (vif->type == NL80211_IFTYPE_MONITOR) 1504 mvm->monitor_on = true; 1505 1506 iwl_mvm_vif_dbgfs_register(mvm, vif); 1507 goto out_unlock; 1508 1509 out_unbind: 1510 iwl_mvm_binding_remove_vif(mvm, vif); 1511 out_unref_phy: 1512 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1513 out_free_bf: 1514 if (mvm->bf_allowed_vif == mvmvif) { 1515 mvm->bf_allowed_vif = NULL; 1516 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1517 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1518 } 1519 out_remove_mac: 1520 mvmvif->phy_ctxt = NULL; 1521 iwl_mvm_mac_ctxt_remove(mvm, vif); 1522 out_release: 1523 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1524 mvm->vif_count--; 1525 out_unlock: 1526 mutex_unlock(&mvm->mutex); 1527 1528 return ret; 1529 } 1530 1531 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm, 1532 struct ieee80211_vif *vif) 1533 { 1534 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1535 /* 1536 * Flush the ROC worker which will flush the OFFCHANNEL queue. 1537 * We assume here that all the packets sent to the OFFCHANNEL 1538 * queue are sent in ROC session. 1539 */ 1540 flush_work(&mvm->roc_done_wk); 1541 } 1542 } 1543 1544 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, 1545 struct ieee80211_vif *vif) 1546 { 1547 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1548 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1549 struct iwl_probe_resp_data *probe_data; 1550 1551 iwl_mvm_prepare_mac_removal(mvm, vif); 1552 1553 if (!(vif->type == NL80211_IFTYPE_AP || 1554 vif->type == NL80211_IFTYPE_ADHOC)) 1555 iwl_mvm_tcm_rm_vif(mvm, vif); 1556 1557 mutex_lock(&mvm->mutex); 1558 1559 probe_data = rcu_dereference_protected(mvmvif->probe_resp_data, 1560 lockdep_is_held(&mvm->mutex)); 1561 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); 1562 if (probe_data) 1563 kfree_rcu(probe_data, rcu_head); 1564 1565 if (mvm->bf_allowed_vif == mvmvif) { 1566 mvm->bf_allowed_vif = NULL; 1567 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1568 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1569 } 1570 1571 if (vif->bss_conf.ftm_responder) 1572 memset(&mvm->ftm_resp_stats, 0, sizeof(mvm->ftm_resp_stats)); 1573 1574 iwl_mvm_vif_dbgfs_clean(mvm, vif); 1575 1576 /* 1577 * For AP/GO interface, the tear down of the resources allocated to the 1578 * interface is be handled as part of the stop_ap flow. 1579 */ 1580 if (vif->type == NL80211_IFTYPE_AP || 1581 vif->type == NL80211_IFTYPE_ADHOC) { 1582 #ifdef CONFIG_NL80211_TESTMODE 1583 if (vif == mvm->noa_vif) { 1584 mvm->noa_vif = NULL; 1585 mvm->noa_duration = 0; 1586 } 1587 #endif 1588 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta); 1589 iwl_mvm_dealloc_bcast_sta(mvm, vif); 1590 goto out_release; 1591 } 1592 1593 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1594 mvm->p2p_device_vif = NULL; 1595 iwl_mvm_rm_p2p_bcast_sta(mvm, vif); 1596 iwl_mvm_binding_remove_vif(mvm, vif); 1597 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1598 mvmvif->phy_ctxt = NULL; 1599 } 1600 1601 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE) 1602 mvm->vif_count--; 1603 1604 iwl_mvm_power_update_mac(mvm); 1605 iwl_mvm_mac_ctxt_remove(mvm, vif); 1606 1607 RCU_INIT_POINTER(mvm->vif_id_to_mac[mvmvif->id], NULL); 1608 1609 if (vif->type == NL80211_IFTYPE_MONITOR) 1610 mvm->monitor_on = false; 1611 1612 out_release: 1613 mutex_unlock(&mvm->mutex); 1614 } 1615 1616 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed) 1617 { 1618 return 0; 1619 } 1620 1621 struct iwl_mvm_mc_iter_data { 1622 struct iwl_mvm *mvm; 1623 int port_id; 1624 }; 1625 1626 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac, 1627 struct ieee80211_vif *vif) 1628 { 1629 struct iwl_mvm_mc_iter_data *data = _data; 1630 struct iwl_mvm *mvm = data->mvm; 1631 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd; 1632 struct iwl_host_cmd hcmd = { 1633 .id = MCAST_FILTER_CMD, 1634 .flags = CMD_ASYNC, 1635 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1636 }; 1637 int ret, len; 1638 1639 /* if we don't have free ports, mcast frames will be dropped */ 1640 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM)) 1641 return; 1642 1643 if (vif->type != NL80211_IFTYPE_STATION || 1644 !vif->bss_conf.assoc) 1645 return; 1646 1647 cmd->port_id = data->port_id++; 1648 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 1649 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4); 1650 1651 hcmd.len[0] = len; 1652 hcmd.data[0] = cmd; 1653 1654 ret = iwl_mvm_send_cmd(mvm, &hcmd); 1655 if (ret) 1656 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret); 1657 } 1658 1659 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm) 1660 { 1661 struct iwl_mvm_mc_iter_data iter_data = { 1662 .mvm = mvm, 1663 }; 1664 1665 lockdep_assert_held(&mvm->mutex); 1666 1667 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd)) 1668 return; 1669 1670 ieee80211_iterate_active_interfaces_atomic( 1671 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1672 iwl_mvm_mc_iface_iterator, &iter_data); 1673 } 1674 1675 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw, 1676 struct netdev_hw_addr_list *mc_list) 1677 { 1678 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1679 struct iwl_mcast_filter_cmd *cmd; 1680 struct netdev_hw_addr *addr; 1681 int addr_count; 1682 bool pass_all; 1683 int len; 1684 1685 addr_count = netdev_hw_addr_list_count(mc_list); 1686 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES || 1687 IWL_MVM_FW_MCAST_FILTER_PASS_ALL; 1688 if (pass_all) 1689 addr_count = 0; 1690 1691 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4); 1692 cmd = kzalloc(len, GFP_ATOMIC); 1693 if (!cmd) 1694 return 0; 1695 1696 if (pass_all) { 1697 cmd->pass_all = 1; 1698 return (u64)(unsigned long)cmd; 1699 } 1700 1701 netdev_hw_addr_list_for_each(addr, mc_list) { 1702 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n", 1703 cmd->count, addr->addr); 1704 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN], 1705 addr->addr, ETH_ALEN); 1706 cmd->count++; 1707 } 1708 1709 return (u64)(unsigned long)cmd; 1710 } 1711 1712 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw, 1713 unsigned int changed_flags, 1714 unsigned int *total_flags, 1715 u64 multicast) 1716 { 1717 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1718 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast; 1719 1720 mutex_lock(&mvm->mutex); 1721 1722 /* replace previous configuration */ 1723 kfree(mvm->mcast_filter_cmd); 1724 mvm->mcast_filter_cmd = cmd; 1725 1726 if (!cmd) 1727 goto out; 1728 1729 if (changed_flags & FIF_ALLMULTI) 1730 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI); 1731 1732 if (cmd->pass_all) 1733 cmd->count = 0; 1734 1735 iwl_mvm_recalc_multicast(mvm); 1736 out: 1737 mutex_unlock(&mvm->mutex); 1738 *total_flags = 0; 1739 } 1740 1741 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw, 1742 struct ieee80211_vif *vif, 1743 unsigned int filter_flags, 1744 unsigned int changed_flags) 1745 { 1746 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1747 1748 /* We support only filter for probe requests */ 1749 if (!(changed_flags & FIF_PROBE_REQ)) 1750 return; 1751 1752 /* Supported only for p2p client interfaces */ 1753 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1754 !vif->p2p) 1755 return; 1756 1757 mutex_lock(&mvm->mutex); 1758 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1759 mutex_unlock(&mvm->mutex); 1760 } 1761 1762 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 1763 struct iwl_bcast_iter_data { 1764 struct iwl_mvm *mvm; 1765 struct iwl_bcast_filter_cmd *cmd; 1766 u8 current_filter; 1767 }; 1768 1769 static void 1770 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif, 1771 const struct iwl_fw_bcast_filter *in_filter, 1772 struct iwl_fw_bcast_filter *out_filter) 1773 { 1774 struct iwl_fw_bcast_filter_attr *attr; 1775 int i; 1776 1777 memcpy(out_filter, in_filter, sizeof(*out_filter)); 1778 1779 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) { 1780 attr = &out_filter->attrs[i]; 1781 1782 if (!attr->mask) 1783 break; 1784 1785 switch (attr->reserved1) { 1786 case cpu_to_le16(BC_FILTER_MAGIC_IP): 1787 if (vif->bss_conf.arp_addr_cnt != 1) { 1788 attr->mask = 0; 1789 continue; 1790 } 1791 1792 attr->val = vif->bss_conf.arp_addr_list[0]; 1793 break; 1794 case cpu_to_le16(BC_FILTER_MAGIC_MAC): 1795 attr->val = *(__be32 *)&vif->addr[2]; 1796 break; 1797 default: 1798 break; 1799 } 1800 attr->reserved1 = 0; 1801 out_filter->num_attrs++; 1802 } 1803 } 1804 1805 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac, 1806 struct ieee80211_vif *vif) 1807 { 1808 struct iwl_bcast_iter_data *data = _data; 1809 struct iwl_mvm *mvm = data->mvm; 1810 struct iwl_bcast_filter_cmd *cmd = data->cmd; 1811 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1812 struct iwl_fw_bcast_mac *bcast_mac; 1813 int i; 1814 1815 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs))) 1816 return; 1817 1818 bcast_mac = &cmd->macs[mvmvif->id]; 1819 1820 /* 1821 * enable filtering only for associated stations, but not for P2P 1822 * Clients 1823 */ 1824 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p || 1825 !vif->bss_conf.assoc) 1826 return; 1827 1828 bcast_mac->default_discard = 1; 1829 1830 /* copy all configured filters */ 1831 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) { 1832 /* 1833 * Make sure we don't exceed our filters limit. 1834 * if there is still a valid filter to be configured, 1835 * be on the safe side and just allow bcast for this mac. 1836 */ 1837 if (WARN_ON_ONCE(data->current_filter >= 1838 ARRAY_SIZE(cmd->filters))) { 1839 bcast_mac->default_discard = 0; 1840 bcast_mac->attached_filters = 0; 1841 break; 1842 } 1843 1844 iwl_mvm_set_bcast_filter(vif, 1845 &mvm->bcast_filters[i], 1846 &cmd->filters[data->current_filter]); 1847 1848 /* skip current filter if it contains no attributes */ 1849 if (!cmd->filters[data->current_filter].num_attrs) 1850 continue; 1851 1852 /* attach the filter to current mac */ 1853 bcast_mac->attached_filters |= 1854 cpu_to_le16(BIT(data->current_filter)); 1855 1856 data->current_filter++; 1857 } 1858 } 1859 1860 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm, 1861 struct iwl_bcast_filter_cmd *cmd) 1862 { 1863 struct iwl_bcast_iter_data iter_data = { 1864 .mvm = mvm, 1865 .cmd = cmd, 1866 }; 1867 1868 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL) 1869 return false; 1870 1871 memset(cmd, 0, sizeof(*cmd)); 1872 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters); 1873 cmd->max_macs = ARRAY_SIZE(cmd->macs); 1874 1875 #ifdef CONFIG_IWLWIFI_DEBUGFS 1876 /* use debugfs filters/macs if override is configured */ 1877 if (mvm->dbgfs_bcast_filtering.override) { 1878 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters, 1879 sizeof(cmd->filters)); 1880 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs, 1881 sizeof(cmd->macs)); 1882 return true; 1883 } 1884 #endif 1885 1886 /* if no filters are configured, do nothing */ 1887 if (!mvm->bcast_filters) 1888 return false; 1889 1890 /* configure and attach these filters for each associated sta vif */ 1891 ieee80211_iterate_active_interfaces( 1892 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1893 iwl_mvm_bcast_filter_iterator, &iter_data); 1894 1895 return true; 1896 } 1897 1898 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1899 { 1900 struct iwl_bcast_filter_cmd cmd; 1901 1902 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING)) 1903 return 0; 1904 1905 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) 1906 return 0; 1907 1908 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0, 1909 sizeof(cmd), &cmd); 1910 } 1911 #else 1912 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1913 { 1914 return 0; 1915 } 1916 #endif 1917 1918 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm, 1919 struct ieee80211_vif *vif) 1920 { 1921 struct iwl_mu_group_mgmt_cmd cmd = {}; 1922 1923 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership, 1924 WLAN_MEMBERSHIP_LEN); 1925 memcpy(cmd.user_position, vif->bss_conf.mu_group.position, 1926 WLAN_USER_POSITION_LEN); 1927 1928 return iwl_mvm_send_cmd_pdu(mvm, 1929 WIDE_ID(DATA_PATH_GROUP, 1930 UPDATE_MU_GROUPS_CMD), 1931 0, sizeof(cmd), &cmd); 1932 } 1933 1934 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac, 1935 struct ieee80211_vif *vif) 1936 { 1937 if (vif->mu_mimo_owner) { 1938 struct iwl_mu_group_mgmt_notif *notif = _data; 1939 1940 /* 1941 * MU-MIMO Group Id action frame is little endian. We treat 1942 * the data received from firmware as if it came from the 1943 * action frame, so no conversion is needed. 1944 */ 1945 ieee80211_update_mu_groups(vif, 1946 (u8 *)¬if->membership_status, 1947 (u8 *)¬if->user_position); 1948 } 1949 } 1950 1951 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm, 1952 struct iwl_rx_cmd_buffer *rxb) 1953 { 1954 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1955 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data; 1956 1957 ieee80211_iterate_active_interfaces_atomic( 1958 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1959 iwl_mvm_mu_mimo_iface_iterator, notif); 1960 } 1961 1962 static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit) 1963 { 1964 u8 byte_num = ppe_pos_bit / 8; 1965 u8 bit_num = ppe_pos_bit % 8; 1966 u8 residue_bits; 1967 u8 res; 1968 1969 if (bit_num <= 5) 1970 return (ppe[byte_num] >> bit_num) & 1971 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1); 1972 1973 /* 1974 * If bit_num > 5, we have to combine bits with next byte. 1975 * Calculate how many bits we need to take from current byte (called 1976 * here "residue_bits"), and add them to bits from next byte. 1977 */ 1978 1979 residue_bits = 8 - bit_num; 1980 1981 res = (ppe[byte_num + 1] & 1982 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE - residue_bits) - 1)) << 1983 residue_bits; 1984 res += (ppe[byte_num] >> bit_num) & (BIT(residue_bits) - 1); 1985 1986 return res; 1987 } 1988 1989 static void iwl_mvm_cfg_he_sta(struct iwl_mvm *mvm, 1990 struct ieee80211_vif *vif, u8 sta_id) 1991 { 1992 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1993 struct iwl_he_sta_context_cmd sta_ctxt_cmd = { 1994 .sta_id = sta_id, 1995 .tid_limit = IWL_MAX_TID_COUNT, 1996 .bss_color = vif->bss_conf.he_bss_color.color, 1997 .htc_trig_based_pkt_ext = vif->bss_conf.htc_trig_based_pkt_ext, 1998 .frame_time_rts_th = 1999 cpu_to_le16(vif->bss_conf.frame_time_rts_th), 2000 }; 2001 int size = fw_has_api(&mvm->fw->ucode_capa, 2002 IWL_UCODE_TLV_API_MBSSID_HE) ? 2003 sizeof(sta_ctxt_cmd) : 2004 sizeof(struct iwl_he_sta_context_cmd_v1); 2005 struct ieee80211_sta *sta; 2006 u32 flags; 2007 int i; 2008 2009 rcu_read_lock(); 2010 2011 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_ctxt_cmd.sta_id]); 2012 if (IS_ERR_OR_NULL(sta)) { 2013 rcu_read_unlock(); 2014 WARN(1, "Can't find STA to configure HE\n"); 2015 return; 2016 } 2017 2018 if (!sta->he_cap.has_he) { 2019 rcu_read_unlock(); 2020 return; 2021 } 2022 2023 flags = 0; 2024 2025 /* Block 26-tone RU OFDMA transmissions */ 2026 if (mvmvif->he_ru_2mhz_block) 2027 flags |= STA_CTXT_HE_RU_2MHZ_BLOCK; 2028 2029 /* HTC flags */ 2030 if (sta->he_cap.he_cap_elem.mac_cap_info[0] & 2031 IEEE80211_HE_MAC_CAP0_HTC_HE) 2032 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_SUPPORT); 2033 if ((sta->he_cap.he_cap_elem.mac_cap_info[1] & 2034 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION) || 2035 (sta->he_cap.he_cap_elem.mac_cap_info[2] & 2036 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION)) { 2037 u8 link_adap = 2038 ((sta->he_cap.he_cap_elem.mac_cap_info[2] & 2039 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION) << 1) + 2040 (sta->he_cap.he_cap_elem.mac_cap_info[1] & 2041 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION); 2042 2043 if (link_adap == 2) 2044 sta_ctxt_cmd.htc_flags |= 2045 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_UNSOLICITED); 2046 else if (link_adap == 3) 2047 sta_ctxt_cmd.htc_flags |= 2048 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_BOTH); 2049 } 2050 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_BSR) 2051 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BSR_SUPP); 2052 if (sta->he_cap.he_cap_elem.mac_cap_info[3] & 2053 IEEE80211_HE_MAC_CAP3_OMI_CONTROL) 2054 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_OMI_SUPP); 2055 if (sta->he_cap.he_cap_elem.mac_cap_info[4] & IEEE80211_HE_MAC_CAP4_BQR) 2056 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BQR_SUPP); 2057 2058 /* 2059 * Initialize the PPE thresholds to "None" (7), as described in Table 2060 * 9-262ac of 80211.ax/D3.0. 2061 */ 2062 memset(&sta_ctxt_cmd.pkt_ext, 7, sizeof(sta_ctxt_cmd.pkt_ext)); 2063 2064 /* If PPE Thresholds exist, parse them into a FW-familiar format. */ 2065 if (sta->he_cap.he_cap_elem.phy_cap_info[6] & 2066 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) { 2067 u8 nss = (sta->he_cap.ppe_thres[0] & 2068 IEEE80211_PPE_THRES_NSS_MASK) + 1; 2069 u8 ru_index_bitmap = 2070 (sta->he_cap.ppe_thres[0] & 2071 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK) >> 2072 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS; 2073 u8 *ppe = &sta->he_cap.ppe_thres[0]; 2074 u8 ppe_pos_bit = 7; /* Starting after PPE header */ 2075 2076 /* 2077 * FW currently supports only nss == MAX_HE_SUPP_NSS 2078 * 2079 * If nss > MAX: we can ignore values we don't support 2080 * If nss < MAX: we can set zeros in other streams 2081 */ 2082 if (nss > MAX_HE_SUPP_NSS) { 2083 IWL_INFO(mvm, "Got NSS = %d - trimming to %d\n", nss, 2084 MAX_HE_SUPP_NSS); 2085 nss = MAX_HE_SUPP_NSS; 2086 } 2087 2088 for (i = 0; i < nss; i++) { 2089 u8 ru_index_tmp = ru_index_bitmap << 1; 2090 u8 bw; 2091 2092 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; bw++) { 2093 ru_index_tmp >>= 1; 2094 if (!(ru_index_tmp & 1)) 2095 continue; 2096 2097 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][1] = 2098 iwl_mvm_he_get_ppe_val(ppe, 2099 ppe_pos_bit); 2100 ppe_pos_bit += 2101 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2102 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][0] = 2103 iwl_mvm_he_get_ppe_val(ppe, 2104 ppe_pos_bit); 2105 ppe_pos_bit += 2106 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2107 } 2108 } 2109 2110 flags |= STA_CTXT_HE_PACKET_EXT; 2111 } else if ((sta->he_cap.he_cap_elem.phy_cap_info[9] & 2112 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) != 2113 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_RESERVED) { 2114 int low_th = -1; 2115 int high_th = -1; 2116 2117 /* Take the PPE thresholds from the nominal padding info */ 2118 switch (sta->he_cap.he_cap_elem.phy_cap_info[9] & 2119 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) { 2120 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_0US: 2121 low_th = IWL_HE_PKT_EXT_NONE; 2122 high_th = IWL_HE_PKT_EXT_NONE; 2123 break; 2124 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_8US: 2125 low_th = IWL_HE_PKT_EXT_BPSK; 2126 high_th = IWL_HE_PKT_EXT_NONE; 2127 break; 2128 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_16US: 2129 low_th = IWL_HE_PKT_EXT_NONE; 2130 high_th = IWL_HE_PKT_EXT_BPSK; 2131 break; 2132 } 2133 2134 /* Set the PPE thresholds accordingly */ 2135 if (low_th >= 0 && high_th >= 0) { 2136 struct iwl_he_pkt_ext *pkt_ext = 2137 (struct iwl_he_pkt_ext *)&sta_ctxt_cmd.pkt_ext; 2138 2139 for (i = 0; i < MAX_HE_SUPP_NSS; i++) { 2140 u8 bw; 2141 2142 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; 2143 bw++) { 2144 pkt_ext->pkt_ext_qam_th[i][bw][0] = 2145 low_th; 2146 pkt_ext->pkt_ext_qam_th[i][bw][1] = 2147 high_th; 2148 } 2149 } 2150 2151 flags |= STA_CTXT_HE_PACKET_EXT; 2152 } 2153 } 2154 2155 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & 2156 IEEE80211_HE_MAC_CAP2_32BIT_BA_BITMAP) 2157 flags |= STA_CTXT_HE_32BIT_BA_BITMAP; 2158 2159 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & 2160 IEEE80211_HE_MAC_CAP2_ACK_EN) 2161 flags |= STA_CTXT_HE_ACK_ENABLED; 2162 2163 rcu_read_unlock(); 2164 2165 /* Mark MU EDCA as enabled, unless none detected on some AC */ 2166 flags |= STA_CTXT_HE_MU_EDCA_CW; 2167 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 2168 struct ieee80211_he_mu_edca_param_ac_rec *mu_edca = 2169 &mvmvif->queue_params[i].mu_edca_param_rec; 2170 u8 ac = iwl_mvm_mac80211_ac_to_ucode_ac(i); 2171 2172 if (!mvmvif->queue_params[i].mu_edca) { 2173 flags &= ~STA_CTXT_HE_MU_EDCA_CW; 2174 break; 2175 } 2176 2177 sta_ctxt_cmd.trig_based_txf[ac].cwmin = 2178 cpu_to_le16(mu_edca->ecw_min_max & 0xf); 2179 sta_ctxt_cmd.trig_based_txf[ac].cwmax = 2180 cpu_to_le16((mu_edca->ecw_min_max & 0xf0) >> 4); 2181 sta_ctxt_cmd.trig_based_txf[ac].aifsn = 2182 cpu_to_le16(mu_edca->aifsn); 2183 sta_ctxt_cmd.trig_based_txf[ac].mu_time = 2184 cpu_to_le16(mu_edca->mu_edca_timer); 2185 } 2186 2187 2188 if (vif->bss_conf.uora_exists) { 2189 flags |= STA_CTXT_HE_TRIG_RND_ALLOC; 2190 2191 sta_ctxt_cmd.rand_alloc_ecwmin = 2192 vif->bss_conf.uora_ocw_range & 0x7; 2193 sta_ctxt_cmd.rand_alloc_ecwmax = 2194 (vif->bss_conf.uora_ocw_range >> 3) & 0x7; 2195 } 2196 2197 if (vif->bss_conf.nontransmitted) { 2198 flags |= STA_CTXT_HE_REF_BSSID_VALID; 2199 ether_addr_copy(sta_ctxt_cmd.ref_bssid_addr, 2200 vif->bss_conf.transmitter_bssid); 2201 sta_ctxt_cmd.max_bssid_indicator = 2202 vif->bss_conf.bssid_indicator; 2203 sta_ctxt_cmd.bssid_index = vif->bss_conf.bssid_index; 2204 sta_ctxt_cmd.ema_ap = vif->bss_conf.ema_ap; 2205 sta_ctxt_cmd.profile_periodicity = 2206 vif->bss_conf.profile_periodicity; 2207 } 2208 2209 sta_ctxt_cmd.flags = cpu_to_le32(flags); 2210 2211 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(STA_HE_CTXT_CMD, 2212 DATA_PATH_GROUP, 0), 2213 0, size, &sta_ctxt_cmd)) 2214 IWL_ERR(mvm, "Failed to config FW to work HE!\n"); 2215 } 2216 2217 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, 2218 struct ieee80211_vif *vif, 2219 struct ieee80211_bss_conf *bss_conf, 2220 u32 changes) 2221 { 2222 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2223 int ret; 2224 2225 /* 2226 * Re-calculate the tsf id, as the leader-follower relations depend 2227 * on the beacon interval, which was not known when the station 2228 * interface was added. 2229 */ 2230 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) { 2231 if (vif->bss_conf.he_support && 2232 !iwlwifi_mod_params.disable_11ax) 2233 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id); 2234 2235 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2236 } 2237 2238 /* Update MU EDCA params */ 2239 if (changes & BSS_CHANGED_QOS && mvmvif->associated && 2240 bss_conf->assoc && vif->bss_conf.he_support && 2241 !iwlwifi_mod_params.disable_11ax) 2242 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id); 2243 2244 /* 2245 * If we're not associated yet, take the (new) BSSID before associating 2246 * so the firmware knows. If we're already associated, then use the old 2247 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC 2248 * branch for disassociation below. 2249 */ 2250 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated) 2251 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2252 2253 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid); 2254 if (ret) 2255 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2256 2257 /* after sending it once, adopt mac80211 data */ 2258 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2259 mvmvif->associated = bss_conf->assoc; 2260 2261 if (changes & BSS_CHANGED_ASSOC) { 2262 if (bss_conf->assoc) { 2263 /* clear statistics to get clean beacon counter */ 2264 iwl_mvm_request_statistics(mvm, true); 2265 memset(&mvmvif->beacon_stats, 0, 2266 sizeof(mvmvif->beacon_stats)); 2267 2268 /* add quota for this interface */ 2269 ret = iwl_mvm_update_quotas(mvm, true, NULL); 2270 if (ret) { 2271 IWL_ERR(mvm, "failed to update quotas\n"); 2272 return; 2273 } 2274 2275 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2276 &mvm->status) && 2277 !fw_has_capa(&mvm->fw->ucode_capa, 2278 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) { 2279 /* 2280 * If we're restarting then the firmware will 2281 * obviously have lost synchronisation with 2282 * the AP. It will attempt to synchronise by 2283 * itself, but we can make it more reliable by 2284 * scheduling a session protection time event. 2285 * 2286 * The firmware needs to receive a beacon to 2287 * catch up with synchronisation, use 110% of 2288 * the beacon interval. 2289 * 2290 * Set a large maximum delay to allow for more 2291 * than a single interface. 2292 * 2293 * For new firmware versions, rely on the 2294 * firmware. This is relevant for DCM scenarios 2295 * only anyway. 2296 */ 2297 u32 dur = (11 * vif->bss_conf.beacon_int) / 10; 2298 iwl_mvm_protect_session(mvm, vif, dur, dur, 2299 5 * dur, false); 2300 } 2301 2302 iwl_mvm_sf_update(mvm, vif, false); 2303 iwl_mvm_power_vif_assoc(mvm, vif); 2304 if (vif->p2p) { 2305 iwl_mvm_update_smps(mvm, vif, 2306 IWL_MVM_SMPS_REQ_PROT, 2307 IEEE80211_SMPS_DYNAMIC); 2308 } 2309 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 2310 /* 2311 * If update fails - SF might be running in associated 2312 * mode while disassociated - which is forbidden. 2313 */ 2314 ret = iwl_mvm_sf_update(mvm, vif, false); 2315 WARN_ONCE(ret && 2316 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 2317 &mvm->status), 2318 "Failed to update SF upon disassociation\n"); 2319 2320 /* 2321 * If we get an assert during the connection (after the 2322 * station has been added, but before the vif is set 2323 * to associated), mac80211 will re-add the station and 2324 * then configure the vif. Since the vif is not 2325 * associated, we would remove the station here and 2326 * this would fail the recovery. 2327 */ 2328 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2329 &mvm->status)) { 2330 /* 2331 * Remove AP station now that 2332 * the MAC is unassoc 2333 */ 2334 ret = iwl_mvm_rm_sta_id(mvm, vif, 2335 mvmvif->ap_sta_id); 2336 if (ret) 2337 IWL_ERR(mvm, 2338 "failed to remove AP station\n"); 2339 2340 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 2341 } 2342 2343 /* remove quota for this interface */ 2344 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2345 if (ret) 2346 IWL_ERR(mvm, "failed to update quotas\n"); 2347 2348 /* this will take the cleared BSSID from bss_conf */ 2349 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2350 if (ret) 2351 IWL_ERR(mvm, 2352 "failed to update MAC %pM (clear after unassoc)\n", 2353 vif->addr); 2354 } 2355 2356 /* 2357 * The firmware tracks the MU-MIMO group on its own. 2358 * However, on HW restart we should restore this data. 2359 */ 2360 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2361 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) { 2362 ret = iwl_mvm_update_mu_groups(mvm, vif); 2363 if (ret) 2364 IWL_ERR(mvm, 2365 "failed to update VHT MU_MIMO groups\n"); 2366 } 2367 2368 iwl_mvm_recalc_multicast(mvm); 2369 iwl_mvm_configure_bcast_filter(mvm); 2370 2371 /* reset rssi values */ 2372 mvmvif->bf_data.ave_beacon_signal = 0; 2373 2374 iwl_mvm_bt_coex_vif_change(mvm); 2375 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, 2376 IEEE80211_SMPS_AUTOMATIC); 2377 if (fw_has_capa(&mvm->fw->ucode_capa, 2378 IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2379 iwl_mvm_config_scan(mvm); 2380 } 2381 2382 if (changes & BSS_CHANGED_BEACON_INFO) { 2383 /* 2384 * We received a beacon from the associated AP so 2385 * remove the session protection. 2386 * A firmware with the new API will remove it automatically. 2387 */ 2388 if (!fw_has_capa(&mvm->fw->ucode_capa, 2389 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) 2390 iwl_mvm_stop_session_protection(mvm, vif); 2391 2392 iwl_mvm_sf_update(mvm, vif, false); 2393 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2394 } 2395 2396 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS | 2397 /* 2398 * Send power command on every beacon change, 2399 * because we may have not enabled beacon abort yet. 2400 */ 2401 BSS_CHANGED_BEACON_INFO)) { 2402 ret = iwl_mvm_power_update_mac(mvm); 2403 if (ret) 2404 IWL_ERR(mvm, "failed to update power mode\n"); 2405 } 2406 2407 if (changes & BSS_CHANGED_TXPOWER) { 2408 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2409 bss_conf->txpower); 2410 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2411 } 2412 2413 if (changes & BSS_CHANGED_CQM) { 2414 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n"); 2415 /* reset cqm events tracking */ 2416 mvmvif->bf_data.last_cqm_event = 0; 2417 if (mvmvif->bf_data.bf_enabled) { 2418 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 2419 if (ret) 2420 IWL_ERR(mvm, 2421 "failed to update CQM thresholds\n"); 2422 } 2423 } 2424 2425 if (changes & BSS_CHANGED_ARP_FILTER) { 2426 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n"); 2427 iwl_mvm_configure_bcast_filter(mvm); 2428 } 2429 } 2430 2431 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw, 2432 struct ieee80211_vif *vif) 2433 { 2434 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2435 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2436 int ret, i; 2437 2438 mutex_lock(&mvm->mutex); 2439 2440 /* Send the beacon template */ 2441 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif); 2442 if (ret) 2443 goto out_unlock; 2444 2445 /* 2446 * Re-calculate the tsf id, as the leader-follower relations depend on 2447 * the beacon interval, which was not known when the AP interface 2448 * was added. 2449 */ 2450 if (vif->type == NL80211_IFTYPE_AP) 2451 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2452 2453 mvmvif->ap_assoc_sta_count = 0; 2454 2455 /* Add the mac context */ 2456 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 2457 if (ret) 2458 goto out_unlock; 2459 2460 /* Perform the binding */ 2461 ret = iwl_mvm_binding_add_vif(mvm, vif); 2462 if (ret) 2463 goto out_remove; 2464 2465 /* 2466 * This is not very nice, but the simplest: 2467 * For older FWs adding the mcast sta before the bcast station may 2468 * cause assert 0x2b00. 2469 * This is fixed in later FW so make the order of removal depend on 2470 * the TLV 2471 */ 2472 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2473 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2474 if (ret) 2475 goto out_unbind; 2476 /* 2477 * Send the bcast station. At this stage the TBTT and DTIM time 2478 * events are added and applied to the scheduler 2479 */ 2480 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2481 if (ret) { 2482 iwl_mvm_rm_mcast_sta(mvm, vif); 2483 goto out_unbind; 2484 } 2485 } else { 2486 /* 2487 * Send the bcast station. At this stage the TBTT and DTIM time 2488 * events are added and applied to the scheduler 2489 */ 2490 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2491 if (ret) 2492 goto out_unbind; 2493 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2494 if (ret) { 2495 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2496 goto out_unbind; 2497 } 2498 } 2499 2500 /* must be set before quota calculations */ 2501 mvmvif->ap_ibss_active = true; 2502 2503 /* send all the early keys to the device now */ 2504 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) { 2505 struct ieee80211_key_conf *key = mvmvif->ap_early_keys[i]; 2506 2507 if (!key) 2508 continue; 2509 2510 mvmvif->ap_early_keys[i] = NULL; 2511 2512 ret = __iwl_mvm_mac_set_key(hw, SET_KEY, vif, NULL, key); 2513 if (ret) 2514 goto out_quota_failed; 2515 } 2516 2517 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) { 2518 iwl_mvm_vif_set_low_latency(mvmvif, true, 2519 LOW_LATENCY_VIF_TYPE); 2520 iwl_mvm_send_low_latency_cmd(mvm, true, mvmvif->id); 2521 } 2522 2523 /* power updated needs to be done before quotas */ 2524 iwl_mvm_power_update_mac(mvm); 2525 2526 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2527 if (ret) 2528 goto out_quota_failed; 2529 2530 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2531 if (vif->p2p && mvm->p2p_device_vif) 2532 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2533 2534 iwl_mvm_bt_coex_vif_change(mvm); 2535 2536 /* we don't support TDLS during DCM */ 2537 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2538 iwl_mvm_teardown_tdls_peers(mvm); 2539 2540 iwl_mvm_ftm_restart_responder(mvm, vif); 2541 2542 goto out_unlock; 2543 2544 out_quota_failed: 2545 iwl_mvm_power_update_mac(mvm); 2546 mvmvif->ap_ibss_active = false; 2547 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2548 iwl_mvm_rm_mcast_sta(mvm, vif); 2549 out_unbind: 2550 iwl_mvm_binding_remove_vif(mvm, vif); 2551 out_remove: 2552 iwl_mvm_mac_ctxt_remove(mvm, vif); 2553 out_unlock: 2554 mutex_unlock(&mvm->mutex); 2555 return ret; 2556 } 2557 2558 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw, 2559 struct ieee80211_vif *vif) 2560 { 2561 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2562 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2563 2564 iwl_mvm_prepare_mac_removal(mvm, vif); 2565 2566 mutex_lock(&mvm->mutex); 2567 2568 /* Handle AP stop while in CSA */ 2569 if (rcu_access_pointer(mvm->csa_vif) == vif) { 2570 iwl_mvm_remove_time_event(mvm, mvmvif, 2571 &mvmvif->time_event_data); 2572 RCU_INIT_POINTER(mvm->csa_vif, NULL); 2573 mvmvif->csa_countdown = false; 2574 } 2575 2576 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) { 2577 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 2578 mvm->csa_tx_block_bcn_timeout = 0; 2579 } 2580 2581 mvmvif->ap_ibss_active = false; 2582 mvm->ap_last_beacon_gp2 = 0; 2583 2584 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) { 2585 iwl_mvm_vif_set_low_latency(mvmvif, false, 2586 LOW_LATENCY_VIF_TYPE); 2587 iwl_mvm_send_low_latency_cmd(mvm, false, mvmvif->id); 2588 } 2589 2590 iwl_mvm_bt_coex_vif_change(mvm); 2591 2592 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2593 if (vif->p2p && mvm->p2p_device_vif) 2594 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2595 2596 iwl_mvm_update_quotas(mvm, false, NULL); 2597 2598 iwl_mvm_ftm_responder_clear(mvm, vif); 2599 2600 /* 2601 * This is not very nice, but the simplest: 2602 * For older FWs removing the mcast sta before the bcast station may 2603 * cause assert 0x2b00. 2604 * This is fixed in later FW (which will stop beaconing when removing 2605 * bcast station). 2606 * So make the order of removal depend on the TLV 2607 */ 2608 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2609 iwl_mvm_rm_mcast_sta(mvm, vif); 2610 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2611 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2612 iwl_mvm_rm_mcast_sta(mvm, vif); 2613 iwl_mvm_binding_remove_vif(mvm, vif); 2614 2615 iwl_mvm_power_update_mac(mvm); 2616 2617 iwl_mvm_mac_ctxt_remove(mvm, vif); 2618 2619 mutex_unlock(&mvm->mutex); 2620 } 2621 2622 static void 2623 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm, 2624 struct ieee80211_vif *vif, 2625 struct ieee80211_bss_conf *bss_conf, 2626 u32 changes) 2627 { 2628 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2629 2630 /* Changes will be applied when the AP/IBSS is started */ 2631 if (!mvmvif->ap_ibss_active) 2632 return; 2633 2634 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT | 2635 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) && 2636 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL)) 2637 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2638 2639 /* Need to send a new beacon template to the FW */ 2640 if (changes & BSS_CHANGED_BEACON && 2641 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif)) 2642 IWL_WARN(mvm, "Failed updating beacon data\n"); 2643 2644 if (changes & BSS_CHANGED_TXPOWER) { 2645 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2646 bss_conf->txpower); 2647 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2648 } 2649 2650 if (changes & BSS_CHANGED_FTM_RESPONDER) { 2651 int ret = iwl_mvm_ftm_start_responder(mvm, vif); 2652 2653 if (ret) 2654 IWL_WARN(mvm, "Failed to enable FTM responder (%d)\n", 2655 ret); 2656 } 2657 2658 } 2659 2660 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, 2661 struct ieee80211_vif *vif, 2662 struct ieee80211_bss_conf *bss_conf, 2663 u32 changes) 2664 { 2665 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2666 2667 mutex_lock(&mvm->mutex); 2668 2669 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle) 2670 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2671 2672 switch (vif->type) { 2673 case NL80211_IFTYPE_STATION: 2674 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes); 2675 break; 2676 case NL80211_IFTYPE_AP: 2677 case NL80211_IFTYPE_ADHOC: 2678 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes); 2679 break; 2680 case NL80211_IFTYPE_MONITOR: 2681 if (changes & BSS_CHANGED_MU_GROUPS) 2682 iwl_mvm_update_mu_groups(mvm, vif); 2683 break; 2684 default: 2685 /* shouldn't happen */ 2686 WARN_ON_ONCE(1); 2687 } 2688 2689 mutex_unlock(&mvm->mutex); 2690 } 2691 2692 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, 2693 struct ieee80211_vif *vif, 2694 struct ieee80211_scan_request *hw_req) 2695 { 2696 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2697 int ret; 2698 2699 if (hw_req->req.n_channels == 0 || 2700 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels) 2701 return -EINVAL; 2702 2703 mutex_lock(&mvm->mutex); 2704 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies); 2705 mutex_unlock(&mvm->mutex); 2706 2707 return ret; 2708 } 2709 2710 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw, 2711 struct ieee80211_vif *vif) 2712 { 2713 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2714 2715 mutex_lock(&mvm->mutex); 2716 2717 /* Due to a race condition, it's possible that mac80211 asks 2718 * us to stop a hw_scan when it's already stopped. This can 2719 * happen, for instance, if we stopped the scan ourselves, 2720 * called ieee80211_scan_completed() and the userspace called 2721 * cancel scan scan before ieee80211_scan_work() could run. 2722 * To handle that, simply return if the scan is not running. 2723 */ 2724 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) 2725 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2726 2727 mutex_unlock(&mvm->mutex); 2728 } 2729 2730 static void 2731 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw, 2732 struct ieee80211_sta *sta, u16 tids, 2733 int num_frames, 2734 enum ieee80211_frame_release_type reason, 2735 bool more_data) 2736 { 2737 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2738 2739 /* Called when we need to transmit (a) frame(s) from mac80211 */ 2740 2741 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2742 tids, more_data, false); 2743 } 2744 2745 static void 2746 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw, 2747 struct ieee80211_sta *sta, u16 tids, 2748 int num_frames, 2749 enum ieee80211_frame_release_type reason, 2750 bool more_data) 2751 { 2752 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2753 2754 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */ 2755 2756 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2757 tids, more_data, true); 2758 } 2759 2760 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2761 enum sta_notify_cmd cmd, 2762 struct ieee80211_sta *sta) 2763 { 2764 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2765 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2766 unsigned long txqs = 0, tids = 0; 2767 int tid; 2768 2769 /* 2770 * If we have TVQM then we get too high queue numbers - luckily 2771 * we really shouldn't get here with that because such hardware 2772 * should have firmware supporting buffer station offload. 2773 */ 2774 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 2775 return; 2776 2777 spin_lock_bh(&mvmsta->lock); 2778 for (tid = 0; tid < ARRAY_SIZE(mvmsta->tid_data); tid++) { 2779 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2780 2781 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE) 2782 continue; 2783 2784 __set_bit(tid_data->txq_id, &txqs); 2785 2786 if (iwl_mvm_tid_queued(mvm, tid_data) == 0) 2787 continue; 2788 2789 __set_bit(tid, &tids); 2790 } 2791 2792 switch (cmd) { 2793 case STA_NOTIFY_SLEEP: 2794 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT) 2795 ieee80211_sta_set_buffered(sta, tid, true); 2796 2797 if (txqs) 2798 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true); 2799 /* 2800 * The fw updates the STA to be asleep. Tx packets on the Tx 2801 * queues to this station will not be transmitted. The fw will 2802 * send a Tx response with TX_STATUS_FAIL_DEST_PS. 2803 */ 2804 break; 2805 case STA_NOTIFY_AWAKE: 2806 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA)) 2807 break; 2808 2809 if (txqs) 2810 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false); 2811 iwl_mvm_sta_modify_ps_wake(mvm, sta); 2812 break; 2813 default: 2814 break; 2815 } 2816 spin_unlock_bh(&mvmsta->lock); 2817 } 2818 2819 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2820 struct ieee80211_vif *vif, 2821 enum sta_notify_cmd cmd, 2822 struct ieee80211_sta *sta) 2823 { 2824 __iwl_mvm_mac_sta_notify(hw, cmd, sta); 2825 } 2826 2827 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 2828 { 2829 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2830 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data; 2831 struct ieee80211_sta *sta; 2832 struct iwl_mvm_sta *mvmsta; 2833 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE); 2834 2835 if (WARN_ON(notif->sta_id >= mvm->fw->ucode_capa.num_stations)) 2836 return; 2837 2838 rcu_read_lock(); 2839 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]); 2840 if (WARN_ON(IS_ERR_OR_NULL(sta))) { 2841 rcu_read_unlock(); 2842 return; 2843 } 2844 2845 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2846 2847 if (!mvmsta->vif || 2848 mvmsta->vif->type != NL80211_IFTYPE_AP) { 2849 rcu_read_unlock(); 2850 return; 2851 } 2852 2853 if (mvmsta->sleeping != sleeping) { 2854 mvmsta->sleeping = sleeping; 2855 __iwl_mvm_mac_sta_notify(mvm->hw, 2856 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, 2857 sta); 2858 ieee80211_sta_ps_transition(sta, sleeping); 2859 } 2860 2861 if (sleeping) { 2862 switch (notif->type) { 2863 case IWL_MVM_PM_EVENT_AWAKE: 2864 case IWL_MVM_PM_EVENT_ASLEEP: 2865 break; 2866 case IWL_MVM_PM_EVENT_UAPSD: 2867 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS); 2868 break; 2869 case IWL_MVM_PM_EVENT_PS_POLL: 2870 ieee80211_sta_pspoll(sta); 2871 break; 2872 default: 2873 break; 2874 } 2875 } 2876 2877 rcu_read_unlock(); 2878 } 2879 2880 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw, 2881 struct ieee80211_vif *vif, 2882 struct ieee80211_sta *sta) 2883 { 2884 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2885 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2886 2887 /* 2888 * This is called before mac80211 does RCU synchronisation, 2889 * so here we already invalidate our internal RCU-protected 2890 * station pointer. The rest of the code will thus no longer 2891 * be able to find the station this way, and we don't rely 2892 * on further RCU synchronisation after the sta_state() 2893 * callback deleted the station. 2894 */ 2895 mutex_lock(&mvm->mutex); 2896 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id])) 2897 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 2898 ERR_PTR(-ENOENT)); 2899 2900 mutex_unlock(&mvm->mutex); 2901 } 2902 2903 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2904 const u8 *bssid) 2905 { 2906 int i; 2907 2908 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 2909 struct iwl_mvm_tcm_mac *mdata; 2910 2911 mdata = &mvm->tcm.data[iwl_mvm_vif_from_mac80211(vif)->id]; 2912 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate); 2913 mdata->opened_rx_ba_sessions = false; 2914 } 2915 2916 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT)) 2917 return; 2918 2919 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) { 2920 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2921 return; 2922 } 2923 2924 if (!vif->p2p && 2925 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) { 2926 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2927 return; 2928 } 2929 2930 for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) { 2931 if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) { 2932 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2933 return; 2934 } 2935 } 2936 2937 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 2938 } 2939 2940 static void 2941 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm, 2942 struct ieee80211_vif *vif, u8 *peer_addr, 2943 enum nl80211_tdls_operation action) 2944 { 2945 struct iwl_fw_dbg_trigger_tlv *trig; 2946 struct iwl_fw_dbg_trigger_tdls *tdls_trig; 2947 2948 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 2949 FW_DBG_TRIGGER_TDLS); 2950 if (!trig) 2951 return; 2952 2953 tdls_trig = (void *)trig->data; 2954 2955 if (!(tdls_trig->action_bitmap & BIT(action))) 2956 return; 2957 2958 if (tdls_trig->peer_mode && 2959 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0) 2960 return; 2961 2962 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 2963 "TDLS event occurred, peer %pM, action %d", 2964 peer_addr, action); 2965 } 2966 2967 struct iwl_mvm_he_obss_narrow_bw_ru_data { 2968 bool tolerated; 2969 }; 2970 2971 static void iwl_mvm_check_he_obss_narrow_bw_ru_iter(struct wiphy *wiphy, 2972 struct cfg80211_bss *bss, 2973 void *_data) 2974 { 2975 struct iwl_mvm_he_obss_narrow_bw_ru_data *data = _data; 2976 const struct element *elem; 2977 2978 elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, bss->ies->data, 2979 bss->ies->len); 2980 2981 if (!elem || elem->datalen < 10 || 2982 !(elem->data[10] & 2983 WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT)) { 2984 data->tolerated = false; 2985 } 2986 } 2987 2988 static void iwl_mvm_check_he_obss_narrow_bw_ru(struct ieee80211_hw *hw, 2989 struct ieee80211_vif *vif) 2990 { 2991 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2992 struct iwl_mvm_he_obss_narrow_bw_ru_data iter_data = { 2993 .tolerated = true, 2994 }; 2995 2996 if (!(vif->bss_conf.chandef.chan->flags & IEEE80211_CHAN_RADAR)) { 2997 mvmvif->he_ru_2mhz_block = false; 2998 return; 2999 } 3000 3001 cfg80211_bss_iter(hw->wiphy, &vif->bss_conf.chandef, 3002 iwl_mvm_check_he_obss_narrow_bw_ru_iter, 3003 &iter_data); 3004 3005 /* 3006 * If there is at least one AP on radar channel that cannot 3007 * tolerate 26-tone RU UL OFDMA transmissions using HE TB PPDU. 3008 */ 3009 mvmvif->he_ru_2mhz_block = !iter_data.tolerated; 3010 } 3011 3012 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, 3013 struct ieee80211_vif *vif, 3014 struct ieee80211_sta *sta, 3015 enum ieee80211_sta_state old_state, 3016 enum ieee80211_sta_state new_state) 3017 { 3018 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3019 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3020 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3021 int ret; 3022 3023 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n", 3024 sta->addr, old_state, new_state); 3025 3026 /* this would be a mac80211 bug ... but don't crash */ 3027 if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) 3028 return test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status) ? 0 : -EINVAL; 3029 3030 /* 3031 * If we are in a STA removal flow and in DQA mode: 3032 * 3033 * This is after the sync_rcu part, so the queues have already been 3034 * flushed. No more TXs on their way in mac80211's path, and no more in 3035 * the queues. 3036 * Also, we won't be getting any new TX frames for this station. 3037 * What we might have are deferred TX frames that need to be taken care 3038 * of. 3039 * 3040 * Drop any still-queued deferred-frame before removing the STA, and 3041 * make sure the worker is no longer handling frames for this STA. 3042 */ 3043 if (old_state == IEEE80211_STA_NONE && 3044 new_state == IEEE80211_STA_NOTEXIST) { 3045 flush_work(&mvm->add_stream_wk); 3046 3047 /* 3048 * No need to make sure deferred TX indication is off since the 3049 * worker will already remove it if it was on 3050 */ 3051 } 3052 3053 mutex_lock(&mvm->mutex); 3054 /* track whether or not the station is associated */ 3055 mvm_sta->sta_state = new_state; 3056 3057 if (old_state == IEEE80211_STA_NOTEXIST && 3058 new_state == IEEE80211_STA_NONE) { 3059 /* 3060 * Firmware bug - it'll crash if the beacon interval is less 3061 * than 16. We can't avoid connecting at all, so refuse the 3062 * station state change, this will cause mac80211 to abandon 3063 * attempts to connect to this AP, and eventually wpa_s will 3064 * blocklist the AP... 3065 */ 3066 if (vif->type == NL80211_IFTYPE_STATION && 3067 vif->bss_conf.beacon_int < 16) { 3068 IWL_ERR(mvm, 3069 "AP %pM beacon interval is %d, refusing due to firmware bug!\n", 3070 sta->addr, vif->bss_conf.beacon_int); 3071 ret = -EINVAL; 3072 goto out_unlock; 3073 } 3074 3075 if (vif->type == NL80211_IFTYPE_STATION) 3076 vif->bss_conf.he_support = sta->he_cap.has_he; 3077 3078 if (sta->tdls && 3079 (vif->p2p || 3080 iwl_mvm_tdls_sta_count(mvm, NULL) == 3081 IWL_MVM_TDLS_STA_COUNT || 3082 iwl_mvm_phy_ctx_count(mvm) > 1)) { 3083 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n"); 3084 ret = -EBUSY; 3085 goto out_unlock; 3086 } 3087 3088 ret = iwl_mvm_add_sta(mvm, vif, sta); 3089 if (sta->tdls && ret == 0) { 3090 iwl_mvm_recalc_tdls_state(mvm, vif, true); 3091 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3092 NL80211_TDLS_SETUP); 3093 } 3094 3095 sta->max_rc_amsdu_len = 1; 3096 } else if (old_state == IEEE80211_STA_NONE && 3097 new_state == IEEE80211_STA_AUTH) { 3098 /* 3099 * EBS may be disabled due to previous failures reported by FW. 3100 * Reset EBS status here assuming environment has been changed. 3101 */ 3102 mvm->last_ebs_successful = true; 3103 iwl_mvm_check_uapsd(mvm, vif, sta->addr); 3104 ret = 0; 3105 } else if (old_state == IEEE80211_STA_AUTH && 3106 new_state == IEEE80211_STA_ASSOC) { 3107 if (vif->type == NL80211_IFTYPE_AP) { 3108 vif->bss_conf.he_support = sta->he_cap.has_he; 3109 mvmvif->ap_assoc_sta_count++; 3110 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3111 if (vif->bss_conf.he_support && 3112 !iwlwifi_mod_params.disable_11ax) 3113 iwl_mvm_cfg_he_sta(mvm, vif, mvm_sta->sta_id); 3114 } else if (vif->type == NL80211_IFTYPE_STATION) { 3115 vif->bss_conf.he_support = sta->he_cap.has_he; 3116 3117 mvmvif->he_ru_2mhz_block = false; 3118 if (sta->he_cap.has_he) 3119 iwl_mvm_check_he_obss_narrow_bw_ru(hw, vif); 3120 3121 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3122 } 3123 3124 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3125 false); 3126 ret = iwl_mvm_update_sta(mvm, vif, sta); 3127 } else if (old_state == IEEE80211_STA_ASSOC && 3128 new_state == IEEE80211_STA_AUTHORIZED) { 3129 ret = 0; 3130 3131 /* we don't support TDLS during DCM */ 3132 if (iwl_mvm_phy_ctx_count(mvm) > 1) 3133 iwl_mvm_teardown_tdls_peers(mvm); 3134 3135 if (sta->tdls) 3136 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3137 NL80211_TDLS_ENABLE_LINK); 3138 3139 /* enable beacon filtering */ 3140 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 3141 3142 /* 3143 * Now that the station is authorized, i.e., keys were already 3144 * installed, need to indicate to the FW that 3145 * multicast data frames can be forwarded to the driver 3146 */ 3147 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3148 3149 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3150 true); 3151 } else if (old_state == IEEE80211_STA_AUTHORIZED && 3152 new_state == IEEE80211_STA_ASSOC) { 3153 /* Multicast data frames are no longer allowed */ 3154 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3155 3156 /* disable beacon filtering */ 3157 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 3158 WARN_ON(ret && 3159 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 3160 &mvm->status)); 3161 ret = 0; 3162 } else if (old_state == IEEE80211_STA_ASSOC && 3163 new_state == IEEE80211_STA_AUTH) { 3164 if (vif->type == NL80211_IFTYPE_AP) { 3165 mvmvif->ap_assoc_sta_count--; 3166 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3167 } 3168 ret = 0; 3169 } else if (old_state == IEEE80211_STA_AUTH && 3170 new_state == IEEE80211_STA_NONE) { 3171 ret = 0; 3172 } else if (old_state == IEEE80211_STA_NONE && 3173 new_state == IEEE80211_STA_NOTEXIST) { 3174 ret = iwl_mvm_rm_sta(mvm, vif, sta); 3175 if (sta->tdls) { 3176 iwl_mvm_recalc_tdls_state(mvm, vif, false); 3177 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3178 NL80211_TDLS_DISABLE_LINK); 3179 } 3180 3181 if (unlikely(ret && 3182 test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 3183 &mvm->status))) 3184 ret = 0; 3185 } else { 3186 ret = -EIO; 3187 } 3188 out_unlock: 3189 mutex_unlock(&mvm->mutex); 3190 3191 if (sta->tdls && ret == 0) { 3192 if (old_state == IEEE80211_STA_NOTEXIST && 3193 new_state == IEEE80211_STA_NONE) 3194 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID); 3195 else if (old_state == IEEE80211_STA_NONE && 3196 new_state == IEEE80211_STA_NOTEXIST) 3197 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID); 3198 } 3199 3200 return ret; 3201 } 3202 3203 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 3204 { 3205 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3206 3207 mvm->rts_threshold = value; 3208 3209 return 0; 3210 } 3211 3212 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw, 3213 struct ieee80211_vif *vif, 3214 struct ieee80211_sta *sta, u32 changed) 3215 { 3216 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3217 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3218 3219 if (changed & (IEEE80211_RC_BW_CHANGED | 3220 IEEE80211_RC_SUPP_RATES_CHANGED | 3221 IEEE80211_RC_NSS_CHANGED)) 3222 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3223 true); 3224 3225 if (vif->type == NL80211_IFTYPE_STATION && 3226 changed & IEEE80211_RC_NSS_CHANGED) 3227 iwl_mvm_sf_update(mvm, vif, false); 3228 } 3229 3230 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw, 3231 struct ieee80211_vif *vif, u16 ac, 3232 const struct ieee80211_tx_queue_params *params) 3233 { 3234 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3235 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3236 3237 mvmvif->queue_params[ac] = *params; 3238 3239 /* 3240 * No need to update right away, we'll get BSS_CHANGED_QOS 3241 * The exception is P2P_DEVICE interface which needs immediate update. 3242 */ 3243 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 3244 int ret; 3245 3246 mutex_lock(&mvm->mutex); 3247 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3248 mutex_unlock(&mvm->mutex); 3249 return ret; 3250 } 3251 return 0; 3252 } 3253 3254 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, 3255 struct ieee80211_vif *vif, 3256 u16 req_duration) 3257 { 3258 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3259 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS; 3260 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS; 3261 3262 if (req_duration > duration) 3263 duration = req_duration; 3264 3265 mutex_lock(&mvm->mutex); 3266 /* Try really hard to protect the session and hear a beacon 3267 * The new session protection command allows us to protect the 3268 * session for a much longer time since the firmware will internally 3269 * create two events: a 300TU one with a very high priority that 3270 * won't be fragmented which should be enough for 99% of the cases, 3271 * and another one (which we configure here to be 900TU long) which 3272 * will have a slightly lower priority, but more importantly, can be 3273 * fragmented so that it'll allow other activities to run. 3274 */ 3275 if (fw_has_capa(&mvm->fw->ucode_capa, 3276 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) 3277 iwl_mvm_schedule_session_protection(mvm, vif, 900, 3278 min_duration, false); 3279 else 3280 iwl_mvm_protect_session(mvm, vif, duration, 3281 min_duration, 500, false); 3282 mutex_unlock(&mvm->mutex); 3283 } 3284 3285 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw, 3286 struct ieee80211_vif *vif, 3287 struct cfg80211_sched_scan_request *req, 3288 struct ieee80211_scan_ies *ies) 3289 { 3290 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3291 3292 int ret; 3293 3294 mutex_lock(&mvm->mutex); 3295 3296 if (!vif->bss_conf.idle) { 3297 ret = -EBUSY; 3298 goto out; 3299 } 3300 3301 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED); 3302 3303 out: 3304 mutex_unlock(&mvm->mutex); 3305 return ret; 3306 } 3307 3308 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw, 3309 struct ieee80211_vif *vif) 3310 { 3311 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3312 int ret; 3313 3314 mutex_lock(&mvm->mutex); 3315 3316 /* Due to a race condition, it's possible that mac80211 asks 3317 * us to stop a sched_scan when it's already stopped. This 3318 * can happen, for instance, if we stopped the scan ourselves, 3319 * called ieee80211_sched_scan_stopped() and the userspace called 3320 * stop sched scan scan before ieee80211_sched_scan_stopped_work() 3321 * could run. To handle this, simply return if the scan is 3322 * not running. 3323 */ 3324 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) { 3325 mutex_unlock(&mvm->mutex); 3326 return 0; 3327 } 3328 3329 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false); 3330 mutex_unlock(&mvm->mutex); 3331 iwl_mvm_wait_for_async_handlers(mvm); 3332 3333 return ret; 3334 } 3335 3336 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 3337 enum set_key_cmd cmd, 3338 struct ieee80211_vif *vif, 3339 struct ieee80211_sta *sta, 3340 struct ieee80211_key_conf *key) 3341 { 3342 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3343 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3344 struct iwl_mvm_sta *mvmsta; 3345 struct iwl_mvm_key_pn *ptk_pn; 3346 int keyidx = key->keyidx; 3347 int ret, i; 3348 u8 key_offset; 3349 3350 switch (key->cipher) { 3351 case WLAN_CIPHER_SUITE_TKIP: 3352 if (!mvm->trans->trans_cfg->gen2) { 3353 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; 3354 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3355 } else if (vif->type == NL80211_IFTYPE_STATION) { 3356 key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE; 3357 } else { 3358 IWL_DEBUG_MAC80211(mvm, "Use SW encryption for TKIP\n"); 3359 return -EOPNOTSUPP; 3360 } 3361 break; 3362 case WLAN_CIPHER_SUITE_CCMP: 3363 case WLAN_CIPHER_SUITE_GCMP: 3364 case WLAN_CIPHER_SUITE_GCMP_256: 3365 if (!iwl_mvm_has_new_tx_api(mvm)) 3366 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3367 break; 3368 case WLAN_CIPHER_SUITE_AES_CMAC: 3369 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3370 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3371 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE)); 3372 break; 3373 case WLAN_CIPHER_SUITE_WEP40: 3374 case WLAN_CIPHER_SUITE_WEP104: 3375 if (vif->type == NL80211_IFTYPE_STATION) 3376 break; 3377 if (iwl_mvm_has_new_tx_api(mvm)) 3378 return -EOPNOTSUPP; 3379 /* support HW crypto on TX */ 3380 return 0; 3381 default: 3382 /* currently FW supports only one optional cipher scheme */ 3383 if (hw->n_cipher_schemes && 3384 hw->cipher_schemes->cipher == key->cipher) 3385 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3386 else 3387 return -EOPNOTSUPP; 3388 } 3389 3390 switch (cmd) { 3391 case SET_KEY: 3392 if ((vif->type == NL80211_IFTYPE_ADHOC || 3393 vif->type == NL80211_IFTYPE_AP) && !sta) { 3394 /* 3395 * GTK on AP interface is a TX-only key, return 0; 3396 * on IBSS they're per-station and because we're lazy 3397 * we don't support them for RX, so do the same. 3398 * CMAC/GMAC in AP/IBSS modes must be done in software. 3399 */ 3400 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3401 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3402 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3403 ret = -EOPNOTSUPP; 3404 break; 3405 } 3406 3407 if (key->cipher != WLAN_CIPHER_SUITE_GCMP && 3408 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 && 3409 !iwl_mvm_has_new_tx_api(mvm)) { 3410 key->hw_key_idx = STA_KEY_IDX_INVALID; 3411 ret = 0; 3412 break; 3413 } 3414 3415 if (!mvmvif->ap_ibss_active) { 3416 for (i = 0; 3417 i < ARRAY_SIZE(mvmvif->ap_early_keys); 3418 i++) { 3419 if (!mvmvif->ap_early_keys[i]) { 3420 mvmvif->ap_early_keys[i] = key; 3421 break; 3422 } 3423 } 3424 3425 if (i >= ARRAY_SIZE(mvmvif->ap_early_keys)) 3426 ret = -ENOSPC; 3427 else 3428 ret = 0; 3429 3430 break; 3431 } 3432 } 3433 3434 /* During FW restart, in order to restore the state as it was, 3435 * don't try to reprogram keys we previously failed for. 3436 */ 3437 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3438 key->hw_key_idx == STA_KEY_IDX_INVALID) { 3439 IWL_DEBUG_MAC80211(mvm, 3440 "skip invalid idx key programming during restart\n"); 3441 ret = 0; 3442 break; 3443 } 3444 3445 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3446 sta && iwl_mvm_has_new_rx_api(mvm) && 3447 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3448 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3449 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3450 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3451 struct ieee80211_key_seq seq; 3452 int tid, q; 3453 3454 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3455 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx])); 3456 ptk_pn = kzalloc(struct_size(ptk_pn, q, 3457 mvm->trans->num_rx_queues), 3458 GFP_KERNEL); 3459 if (!ptk_pn) { 3460 ret = -ENOMEM; 3461 break; 3462 } 3463 3464 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 3465 ieee80211_get_key_rx_seq(key, tid, &seq); 3466 for (q = 0; q < mvm->trans->num_rx_queues; q++) 3467 memcpy(ptk_pn->q[q].pn[tid], 3468 seq.ccmp.pn, 3469 IEEE80211_CCMP_PN_LEN); 3470 } 3471 3472 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn); 3473 } 3474 3475 /* in HW restart reuse the index, otherwise request a new one */ 3476 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 3477 key_offset = key->hw_key_idx; 3478 else 3479 key_offset = STA_KEY_IDX_INVALID; 3480 3481 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); 3482 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset); 3483 if (ret) { 3484 IWL_WARN(mvm, "set key failed\n"); 3485 key->hw_key_idx = STA_KEY_IDX_INVALID; 3486 /* 3487 * can't add key for RX, but we don't need it 3488 * in the device for TX so still return 0, 3489 * unless we have new TX API where we cannot 3490 * put key material into the TX_CMD 3491 */ 3492 if (iwl_mvm_has_new_tx_api(mvm)) 3493 ret = -EOPNOTSUPP; 3494 else 3495 ret = 0; 3496 } 3497 3498 break; 3499 case DISABLE_KEY: 3500 ret = -ENOENT; 3501 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) { 3502 if (mvmvif->ap_early_keys[i] == key) { 3503 mvmvif->ap_early_keys[i] = NULL; 3504 ret = 0; 3505 } 3506 } 3507 3508 /* found in pending list - don't do anything else */ 3509 if (ret == 0) 3510 break; 3511 3512 if (key->hw_key_idx == STA_KEY_IDX_INVALID) { 3513 ret = 0; 3514 break; 3515 } 3516 3517 if (sta && iwl_mvm_has_new_rx_api(mvm) && 3518 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3519 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3520 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3521 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3522 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3523 ptk_pn = rcu_dereference_protected( 3524 mvmsta->ptk_pn[keyidx], 3525 lockdep_is_held(&mvm->mutex)); 3526 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL); 3527 if (ptk_pn) 3528 kfree_rcu(ptk_pn, rcu_head); 3529 } 3530 3531 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n"); 3532 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key); 3533 break; 3534 default: 3535 ret = -EINVAL; 3536 } 3537 3538 return ret; 3539 } 3540 3541 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 3542 enum set_key_cmd cmd, 3543 struct ieee80211_vif *vif, 3544 struct ieee80211_sta *sta, 3545 struct ieee80211_key_conf *key) 3546 { 3547 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3548 int ret; 3549 3550 mutex_lock(&mvm->mutex); 3551 ret = __iwl_mvm_mac_set_key(hw, cmd, vif, sta, key); 3552 mutex_unlock(&mvm->mutex); 3553 3554 return ret; 3555 } 3556 3557 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, 3558 struct ieee80211_vif *vif, 3559 struct ieee80211_key_conf *keyconf, 3560 struct ieee80211_sta *sta, 3561 u32 iv32, u16 *phase1key) 3562 { 3563 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3564 3565 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID) 3566 return; 3567 3568 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key); 3569 } 3570 3571 3572 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait, 3573 struct iwl_rx_packet *pkt, void *data) 3574 { 3575 struct iwl_mvm *mvm = 3576 container_of(notif_wait, struct iwl_mvm, notif_wait); 3577 struct iwl_hs20_roc_res *resp; 3578 int resp_len = iwl_rx_packet_payload_len(pkt); 3579 struct iwl_mvm_time_event_data *te_data = data; 3580 3581 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD)) 3582 return true; 3583 3584 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 3585 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n"); 3586 return true; 3587 } 3588 3589 resp = (void *)pkt->data; 3590 3591 IWL_DEBUG_TE(mvm, 3592 "Aux ROC: Received response from ucode: status=%d uid=%d\n", 3593 resp->status, resp->event_unique_id); 3594 3595 te_data->uid = le32_to_cpu(resp->event_unique_id); 3596 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n", 3597 te_data->uid); 3598 3599 spin_lock_bh(&mvm->time_event_lock); 3600 list_add_tail(&te_data->list, &mvm->aux_roc_te_list); 3601 spin_unlock_bh(&mvm->time_event_lock); 3602 3603 return true; 3604 } 3605 3606 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100) 3607 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200) 3608 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600) 3609 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20) 3610 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10) 3611 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm, 3612 struct ieee80211_channel *channel, 3613 struct ieee80211_vif *vif, 3614 int duration) 3615 { 3616 int res; 3617 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3618 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data; 3619 static const u16 time_event_response[] = { HOT_SPOT_CMD }; 3620 struct iwl_notification_wait wait_time_event; 3621 u32 dtim_interval = vif->bss_conf.dtim_period * 3622 vif->bss_conf.beacon_int; 3623 u32 req_dur, delay; 3624 struct iwl_hs20_roc_req aux_roc_req = { 3625 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 3626 .id_and_color = 3627 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)), 3628 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id), 3629 }; 3630 struct iwl_hs20_roc_req_tail *tail = iwl_mvm_chan_info_cmd_tail(mvm, 3631 &aux_roc_req.channel_info); 3632 u16 len = sizeof(aux_roc_req) - iwl_mvm_chan_info_padding(mvm); 3633 3634 /* Set the channel info data */ 3635 iwl_mvm_set_chan_info(mvm, &aux_roc_req.channel_info, channel->hw_value, 3636 iwl_mvm_phy_band_from_nl80211(channel->band), 3637 PHY_VHT_CHANNEL_MODE20, 3638 0); 3639 3640 /* Set the time and duration */ 3641 tail->apply_time = cpu_to_le32(iwl_mvm_get_systime(mvm)); 3642 3643 delay = AUX_ROC_MIN_DELAY; 3644 req_dur = MSEC_TO_TU(duration); 3645 3646 /* 3647 * If we are associated we want the delay time to be at least one 3648 * dtim interval so that the FW can wait until after the DTIM and 3649 * then start the time event, this will potentially allow us to 3650 * remain off-channel for the max duration. 3651 * Since we want to use almost a whole dtim interval we would also 3652 * like the delay to be for 2-3 dtim intervals, in case there are 3653 * other time events with higher priority. 3654 */ 3655 if (vif->bss_conf.assoc) { 3656 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY); 3657 /* We cannot remain off-channel longer than the DTIM interval */ 3658 if (dtim_interval <= req_dur) { 3659 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER; 3660 if (req_dur <= AUX_ROC_MIN_DURATION) 3661 req_dur = dtim_interval - 3662 AUX_ROC_MIN_SAFETY_BUFFER; 3663 } 3664 } 3665 3666 tail->duration = cpu_to_le32(req_dur); 3667 tail->apply_time_max_delay = cpu_to_le32(delay); 3668 3669 IWL_DEBUG_TE(mvm, 3670 "ROC: Requesting to remain on channel %u for %ums\n", 3671 channel->hw_value, req_dur); 3672 IWL_DEBUG_TE(mvm, 3673 "\t(requested = %ums, max_delay = %ums, dtim_interval = %ums)\n", 3674 duration, delay, dtim_interval); 3675 3676 /* Set the node address */ 3677 memcpy(tail->node_addr, vif->addr, ETH_ALEN); 3678 3679 lockdep_assert_held(&mvm->mutex); 3680 3681 spin_lock_bh(&mvm->time_event_lock); 3682 3683 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) { 3684 spin_unlock_bh(&mvm->time_event_lock); 3685 return -EIO; 3686 } 3687 3688 te_data->vif = vif; 3689 te_data->duration = duration; 3690 te_data->id = HOT_SPOT_CMD; 3691 3692 spin_unlock_bh(&mvm->time_event_lock); 3693 3694 /* 3695 * Use a notification wait, which really just processes the 3696 * command response and doesn't wait for anything, in order 3697 * to be able to process the response and get the UID inside 3698 * the RX path. Using CMD_WANT_SKB doesn't work because it 3699 * stores the buffer and then wakes up this thread, by which 3700 * time another notification (that the time event started) 3701 * might already be processed unsuccessfully. 3702 */ 3703 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event, 3704 time_event_response, 3705 ARRAY_SIZE(time_event_response), 3706 iwl_mvm_rx_aux_roc, te_data); 3707 3708 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, len, 3709 &aux_roc_req); 3710 3711 if (res) { 3712 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res); 3713 iwl_remove_notification(&mvm->notif_wait, &wait_time_event); 3714 goto out_clear_te; 3715 } 3716 3717 /* No need to wait for anything, so just pass 1 (0 isn't valid) */ 3718 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1); 3719 /* should never fail */ 3720 WARN_ON_ONCE(res); 3721 3722 if (res) { 3723 out_clear_te: 3724 spin_lock_bh(&mvm->time_event_lock); 3725 iwl_mvm_te_clear_data(mvm, te_data); 3726 spin_unlock_bh(&mvm->time_event_lock); 3727 } 3728 3729 return res; 3730 } 3731 3732 static int iwl_mvm_roc(struct ieee80211_hw *hw, 3733 struct ieee80211_vif *vif, 3734 struct ieee80211_channel *channel, 3735 int duration, 3736 enum ieee80211_roc_type type) 3737 { 3738 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3739 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3740 struct cfg80211_chan_def chandef; 3741 struct iwl_mvm_phy_ctxt *phy_ctxt; 3742 int ret, i; 3743 3744 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value, 3745 duration, type); 3746 3747 /* 3748 * Flush the done work, just in case it's still pending, so that 3749 * the work it does can complete and we can accept new frames. 3750 */ 3751 flush_work(&mvm->roc_done_wk); 3752 3753 mutex_lock(&mvm->mutex); 3754 3755 switch (vif->type) { 3756 case NL80211_IFTYPE_STATION: 3757 if (fw_has_capa(&mvm->fw->ucode_capa, 3758 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) { 3759 /* Use aux roc framework (HS20) */ 3760 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 3761 ADD_STA, 0) >= 12) { 3762 u32 lmac_id; 3763 3764 lmac_id = iwl_mvm_get_lmac_id(mvm->fw, 3765 channel->band); 3766 ret = iwl_mvm_add_aux_sta(mvm, lmac_id); 3767 if (WARN(ret, 3768 "Failed to allocate aux station")) 3769 goto out_unlock; 3770 } 3771 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel, 3772 vif, duration); 3773 goto out_unlock; 3774 } 3775 IWL_ERR(mvm, "hotspot not supported\n"); 3776 ret = -EINVAL; 3777 goto out_unlock; 3778 case NL80211_IFTYPE_P2P_DEVICE: 3779 /* handle below */ 3780 break; 3781 default: 3782 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type); 3783 ret = -EINVAL; 3784 goto out_unlock; 3785 } 3786 3787 for (i = 0; i < NUM_PHY_CTX; i++) { 3788 phy_ctxt = &mvm->phy_ctxts[i]; 3789 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt) 3790 continue; 3791 3792 if (phy_ctxt->ref && channel == phy_ctxt->channel) { 3793 /* 3794 * Unbind the P2P_DEVICE from the current PHY context, 3795 * and if the PHY context is not used remove it. 3796 */ 3797 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3798 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3799 goto out_unlock; 3800 3801 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3802 3803 /* Bind the P2P_DEVICE to the current PHY Context */ 3804 mvmvif->phy_ctxt = phy_ctxt; 3805 3806 ret = iwl_mvm_binding_add_vif(mvm, vif); 3807 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3808 goto out_unlock; 3809 3810 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3811 goto schedule_time_event; 3812 } 3813 } 3814 3815 /* Need to update the PHY context only if the ROC channel changed */ 3816 if (channel == mvmvif->phy_ctxt->channel) 3817 goto schedule_time_event; 3818 3819 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT); 3820 3821 /* 3822 * Change the PHY context configuration as it is currently referenced 3823 * only by the P2P Device MAC 3824 */ 3825 if (mvmvif->phy_ctxt->ref == 1) { 3826 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt, 3827 &chandef, 1, 1); 3828 if (ret) 3829 goto out_unlock; 3830 } else { 3831 /* 3832 * The PHY context is shared with other MACs. Need to remove the 3833 * P2P Device from the binding, allocate an new PHY context and 3834 * create a new binding 3835 */ 3836 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3837 if (!phy_ctxt) { 3838 ret = -ENOSPC; 3839 goto out_unlock; 3840 } 3841 3842 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef, 3843 1, 1); 3844 if (ret) { 3845 IWL_ERR(mvm, "Failed to change PHY context\n"); 3846 goto out_unlock; 3847 } 3848 3849 /* Unbind the P2P_DEVICE from the current PHY context */ 3850 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3851 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3852 goto out_unlock; 3853 3854 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3855 3856 /* Bind the P2P_DEVICE to the new allocated PHY context */ 3857 mvmvif->phy_ctxt = phy_ctxt; 3858 3859 ret = iwl_mvm_binding_add_vif(mvm, vif); 3860 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3861 goto out_unlock; 3862 3863 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3864 } 3865 3866 schedule_time_event: 3867 /* Schedule the time events */ 3868 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type); 3869 3870 out_unlock: 3871 mutex_unlock(&mvm->mutex); 3872 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3873 return ret; 3874 } 3875 3876 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw, 3877 struct ieee80211_vif *vif) 3878 { 3879 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3880 3881 IWL_DEBUG_MAC80211(mvm, "enter\n"); 3882 3883 mutex_lock(&mvm->mutex); 3884 iwl_mvm_stop_roc(mvm, vif); 3885 mutex_unlock(&mvm->mutex); 3886 3887 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3888 return 0; 3889 } 3890 3891 struct iwl_mvm_ftm_responder_iter_data { 3892 bool responder; 3893 struct ieee80211_chanctx_conf *ctx; 3894 }; 3895 3896 static void iwl_mvm_ftm_responder_chanctx_iter(void *_data, u8 *mac, 3897 struct ieee80211_vif *vif) 3898 { 3899 struct iwl_mvm_ftm_responder_iter_data *data = _data; 3900 3901 if (rcu_access_pointer(vif->chanctx_conf) == data->ctx && 3902 vif->type == NL80211_IFTYPE_AP && vif->bss_conf.ftmr_params) 3903 data->responder = true; 3904 } 3905 3906 static bool iwl_mvm_is_ftm_responder_chanctx(struct iwl_mvm *mvm, 3907 struct ieee80211_chanctx_conf *ctx) 3908 { 3909 struct iwl_mvm_ftm_responder_iter_data data = { 3910 .responder = false, 3911 .ctx = ctx, 3912 }; 3913 3914 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 3915 IEEE80211_IFACE_ITER_NORMAL, 3916 iwl_mvm_ftm_responder_chanctx_iter, 3917 &data); 3918 return data.responder; 3919 } 3920 3921 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm, 3922 struct ieee80211_chanctx_conf *ctx) 3923 { 3924 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3925 struct iwl_mvm_phy_ctxt *phy_ctxt; 3926 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx); 3927 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def; 3928 int ret; 3929 3930 lockdep_assert_held(&mvm->mutex); 3931 3932 IWL_DEBUG_MAC80211(mvm, "Add channel context\n"); 3933 3934 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3935 if (!phy_ctxt) { 3936 ret = -ENOSPC; 3937 goto out; 3938 } 3939 3940 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def, 3941 ctx->rx_chains_static, 3942 ctx->rx_chains_dynamic); 3943 if (ret) { 3944 IWL_ERR(mvm, "Failed to add PHY context\n"); 3945 goto out; 3946 } 3947 3948 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt); 3949 *phy_ctxt_id = phy_ctxt->id; 3950 out: 3951 return ret; 3952 } 3953 3954 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw, 3955 struct ieee80211_chanctx_conf *ctx) 3956 { 3957 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3958 int ret; 3959 3960 mutex_lock(&mvm->mutex); 3961 ret = __iwl_mvm_add_chanctx(mvm, ctx); 3962 mutex_unlock(&mvm->mutex); 3963 3964 return ret; 3965 } 3966 3967 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm, 3968 struct ieee80211_chanctx_conf *ctx) 3969 { 3970 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3971 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3972 3973 lockdep_assert_held(&mvm->mutex); 3974 3975 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt); 3976 } 3977 3978 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw, 3979 struct ieee80211_chanctx_conf *ctx) 3980 { 3981 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3982 3983 mutex_lock(&mvm->mutex); 3984 __iwl_mvm_remove_chanctx(mvm, ctx); 3985 mutex_unlock(&mvm->mutex); 3986 } 3987 3988 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw, 3989 struct ieee80211_chanctx_conf *ctx, 3990 u32 changed) 3991 { 3992 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3993 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3994 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3995 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx); 3996 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def; 3997 3998 if (WARN_ONCE((phy_ctxt->ref > 1) && 3999 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH | 4000 IEEE80211_CHANCTX_CHANGE_RX_CHAINS | 4001 IEEE80211_CHANCTX_CHANGE_RADAR | 4002 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)), 4003 "Cannot change PHY. Ref=%d, changed=0x%X\n", 4004 phy_ctxt->ref, changed)) 4005 return; 4006 4007 mutex_lock(&mvm->mutex); 4008 4009 /* we are only changing the min_width, may be a noop */ 4010 if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) { 4011 if (phy_ctxt->width == def->width) 4012 goto out_unlock; 4013 4014 /* we are just toggling between 20_NOHT and 20 */ 4015 if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 && 4016 def->width <= NL80211_CHAN_WIDTH_20) 4017 goto out_unlock; 4018 } 4019 4020 iwl_mvm_bt_coex_vif_change(mvm); 4021 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def, 4022 ctx->rx_chains_static, 4023 ctx->rx_chains_dynamic); 4024 4025 out_unlock: 4026 mutex_unlock(&mvm->mutex); 4027 } 4028 4029 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm, 4030 struct ieee80211_vif *vif, 4031 struct ieee80211_chanctx_conf *ctx, 4032 bool switching_chanctx) 4033 { 4034 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4035 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 4036 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4037 int ret; 4038 4039 lockdep_assert_held(&mvm->mutex); 4040 4041 mvmvif->phy_ctxt = phy_ctxt; 4042 4043 switch (vif->type) { 4044 case NL80211_IFTYPE_AP: 4045 /* only needed if we're switching chanctx (i.e. during CSA) */ 4046 if (switching_chanctx) { 4047 mvmvif->ap_ibss_active = true; 4048 break; 4049 } 4050 fallthrough; 4051 case NL80211_IFTYPE_ADHOC: 4052 /* 4053 * The AP binding flow is handled as part of the start_ap flow 4054 * (in bss_info_changed), similarly for IBSS. 4055 */ 4056 ret = 0; 4057 goto out; 4058 case NL80211_IFTYPE_STATION: 4059 mvmvif->csa_bcn_pending = false; 4060 break; 4061 case NL80211_IFTYPE_MONITOR: 4062 /* always disable PS when a monitor interface is active */ 4063 mvmvif->ps_disabled = true; 4064 break; 4065 default: 4066 ret = -EINVAL; 4067 goto out; 4068 } 4069 4070 ret = iwl_mvm_binding_add_vif(mvm, vif); 4071 if (ret) 4072 goto out; 4073 4074 /* 4075 * Power state must be updated before quotas, 4076 * otherwise fw will complain. 4077 */ 4078 iwl_mvm_power_update_mac(mvm); 4079 4080 /* Setting the quota at this stage is only required for monitor 4081 * interfaces. For the other types, the bss_info changed flow 4082 * will handle quota settings. 4083 */ 4084 if (vif->type == NL80211_IFTYPE_MONITOR) { 4085 mvmvif->monitor_active = true; 4086 ret = iwl_mvm_update_quotas(mvm, false, NULL); 4087 if (ret) 4088 goto out_remove_binding; 4089 4090 ret = iwl_mvm_add_snif_sta(mvm, vif); 4091 if (ret) 4092 goto out_remove_binding; 4093 4094 } 4095 4096 /* Handle binding during CSA */ 4097 if (vif->type == NL80211_IFTYPE_AP) { 4098 iwl_mvm_update_quotas(mvm, false, NULL); 4099 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 4100 } 4101 4102 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) { 4103 mvmvif->csa_bcn_pending = true; 4104 4105 if (!fw_has_capa(&mvm->fw->ucode_capa, 4106 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { 4107 u32 duration = 3 * vif->bss_conf.beacon_int; 4108 4109 /* Protect the session to make sure we hear the first 4110 * beacon on the new channel. 4111 */ 4112 iwl_mvm_protect_session(mvm, vif, duration, duration, 4113 vif->bss_conf.beacon_int / 2, 4114 true); 4115 } 4116 4117 iwl_mvm_update_quotas(mvm, false, NULL); 4118 } 4119 4120 goto out; 4121 4122 out_remove_binding: 4123 iwl_mvm_binding_remove_vif(mvm, vif); 4124 iwl_mvm_power_update_mac(mvm); 4125 out: 4126 if (ret) 4127 mvmvif->phy_ctxt = NULL; 4128 return ret; 4129 } 4130 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw, 4131 struct ieee80211_vif *vif, 4132 struct ieee80211_chanctx_conf *ctx) 4133 { 4134 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4135 int ret; 4136 4137 mutex_lock(&mvm->mutex); 4138 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false); 4139 mutex_unlock(&mvm->mutex); 4140 4141 return ret; 4142 } 4143 4144 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm, 4145 struct ieee80211_vif *vif, 4146 struct ieee80211_chanctx_conf *ctx, 4147 bool switching_chanctx) 4148 { 4149 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4150 struct ieee80211_vif *disabled_vif = NULL; 4151 4152 lockdep_assert_held(&mvm->mutex); 4153 4154 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); 4155 4156 switch (vif->type) { 4157 case NL80211_IFTYPE_ADHOC: 4158 goto out; 4159 case NL80211_IFTYPE_MONITOR: 4160 mvmvif->monitor_active = false; 4161 mvmvif->ps_disabled = false; 4162 iwl_mvm_rm_snif_sta(mvm, vif); 4163 break; 4164 case NL80211_IFTYPE_AP: 4165 /* This part is triggered only during CSA */ 4166 if (!switching_chanctx || !mvmvif->ap_ibss_active) 4167 goto out; 4168 4169 mvmvif->csa_countdown = false; 4170 4171 /* Set CS bit on all the stations */ 4172 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true); 4173 4174 /* Save blocked iface, the timeout is set on the next beacon */ 4175 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif); 4176 4177 mvmvif->ap_ibss_active = false; 4178 break; 4179 case NL80211_IFTYPE_STATION: 4180 if (!switching_chanctx) 4181 break; 4182 4183 disabled_vif = vif; 4184 4185 if (!fw_has_capa(&mvm->fw->ucode_capa, 4186 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) 4187 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL); 4188 break; 4189 default: 4190 break; 4191 } 4192 4193 iwl_mvm_update_quotas(mvm, false, disabled_vif); 4194 iwl_mvm_binding_remove_vif(mvm, vif); 4195 4196 out: 4197 mvmvif->phy_ctxt = NULL; 4198 iwl_mvm_power_update_mac(mvm); 4199 } 4200 4201 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, 4202 struct ieee80211_vif *vif, 4203 struct ieee80211_chanctx_conf *ctx) 4204 { 4205 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4206 4207 mutex_lock(&mvm->mutex); 4208 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false); 4209 mutex_unlock(&mvm->mutex); 4210 } 4211 4212 static int 4213 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm, 4214 struct ieee80211_vif_chanctx_switch *vifs) 4215 { 4216 int ret; 4217 4218 mutex_lock(&mvm->mutex); 4219 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 4220 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx); 4221 4222 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx); 4223 if (ret) { 4224 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n"); 4225 goto out_reassign; 4226 } 4227 4228 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 4229 true); 4230 if (ret) { 4231 IWL_ERR(mvm, 4232 "failed to assign new_ctx during channel switch\n"); 4233 goto out_remove; 4234 } 4235 4236 /* we don't support TDLS during DCM - can be caused by channel switch */ 4237 if (iwl_mvm_phy_ctx_count(mvm) > 1) 4238 iwl_mvm_teardown_tdls_peers(mvm); 4239 4240 goto out; 4241 4242 out_remove: 4243 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx); 4244 4245 out_reassign: 4246 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) { 4247 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n"); 4248 goto out_restart; 4249 } 4250 4251 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 4252 true)) { 4253 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 4254 goto out_restart; 4255 } 4256 4257 goto out; 4258 4259 out_restart: 4260 /* things keep failing, better restart the hw */ 4261 iwl_mvm_nic_restart(mvm, false); 4262 4263 out: 4264 mutex_unlock(&mvm->mutex); 4265 4266 return ret; 4267 } 4268 4269 static int 4270 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm, 4271 struct ieee80211_vif_chanctx_switch *vifs) 4272 { 4273 int ret; 4274 4275 mutex_lock(&mvm->mutex); 4276 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 4277 4278 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 4279 true); 4280 if (ret) { 4281 IWL_ERR(mvm, 4282 "failed to assign new_ctx during channel switch\n"); 4283 goto out_reassign; 4284 } 4285 4286 goto out; 4287 4288 out_reassign: 4289 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 4290 true)) { 4291 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 4292 goto out_restart; 4293 } 4294 4295 goto out; 4296 4297 out_restart: 4298 /* things keep failing, better restart the hw */ 4299 iwl_mvm_nic_restart(mvm, false); 4300 4301 out: 4302 mutex_unlock(&mvm->mutex); 4303 4304 return ret; 4305 } 4306 4307 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, 4308 struct ieee80211_vif_chanctx_switch *vifs, 4309 int n_vifs, 4310 enum ieee80211_chanctx_switch_mode mode) 4311 { 4312 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4313 int ret; 4314 4315 /* we only support a single-vif right now */ 4316 if (n_vifs > 1) 4317 return -EOPNOTSUPP; 4318 4319 switch (mode) { 4320 case CHANCTX_SWMODE_SWAP_CONTEXTS: 4321 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs); 4322 break; 4323 case CHANCTX_SWMODE_REASSIGN_VIF: 4324 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs); 4325 break; 4326 default: 4327 ret = -EOPNOTSUPP; 4328 break; 4329 } 4330 4331 return ret; 4332 } 4333 4334 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw) 4335 { 4336 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4337 4338 return mvm->ibss_manager; 4339 } 4340 4341 static int iwl_mvm_set_tim(struct ieee80211_hw *hw, 4342 struct ieee80211_sta *sta, 4343 bool set) 4344 { 4345 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4346 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4347 4348 if (!mvm_sta || !mvm_sta->vif) { 4349 IWL_ERR(mvm, "Station is not associated to a vif\n"); 4350 return -EINVAL; 4351 } 4352 4353 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif); 4354 } 4355 4356 #ifdef CONFIG_NL80211_TESTMODE 4357 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = { 4358 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 }, 4359 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 }, 4360 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 }, 4361 }; 4362 4363 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm, 4364 struct ieee80211_vif *vif, 4365 void *data, int len) 4366 { 4367 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1]; 4368 int err; 4369 u32 noa_duration; 4370 4371 err = nla_parse_deprecated(tb, IWL_MVM_TM_ATTR_MAX, data, len, 4372 iwl_mvm_tm_policy, NULL); 4373 if (err) 4374 return err; 4375 4376 if (!tb[IWL_MVM_TM_ATTR_CMD]) 4377 return -EINVAL; 4378 4379 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) { 4380 case IWL_MVM_TM_CMD_SET_NOA: 4381 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p || 4382 !vif->bss_conf.enable_beacon || 4383 !tb[IWL_MVM_TM_ATTR_NOA_DURATION]) 4384 return -EINVAL; 4385 4386 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]); 4387 if (noa_duration >= vif->bss_conf.beacon_int) 4388 return -EINVAL; 4389 4390 mvm->noa_duration = noa_duration; 4391 mvm->noa_vif = vif; 4392 4393 return iwl_mvm_update_quotas(mvm, true, NULL); 4394 case IWL_MVM_TM_CMD_SET_BEACON_FILTER: 4395 /* must be associated client vif - ignore authorized */ 4396 if (!vif || vif->type != NL80211_IFTYPE_STATION || 4397 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period || 4398 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]) 4399 return -EINVAL; 4400 4401 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])) 4402 return iwl_mvm_enable_beacon_filter(mvm, vif, 0); 4403 return iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4404 } 4405 4406 return -EOPNOTSUPP; 4407 } 4408 4409 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw, 4410 struct ieee80211_vif *vif, 4411 void *data, int len) 4412 { 4413 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4414 int err; 4415 4416 mutex_lock(&mvm->mutex); 4417 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len); 4418 mutex_unlock(&mvm->mutex); 4419 4420 return err; 4421 } 4422 #endif 4423 4424 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw, 4425 struct ieee80211_vif *vif, 4426 struct ieee80211_channel_switch *chsw) 4427 { 4428 /* By implementing this operation, we prevent mac80211 from 4429 * starting its own channel switch timer, so that we can call 4430 * ieee80211_chswitch_done() ourselves at the right time 4431 * (which is when the absence time event starts). 4432 */ 4433 4434 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw), 4435 "dummy channel switch op\n"); 4436 } 4437 4438 static int iwl_mvm_schedule_client_csa(struct iwl_mvm *mvm, 4439 struct ieee80211_vif *vif, 4440 struct ieee80211_channel_switch *chsw) 4441 { 4442 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4443 struct iwl_chan_switch_te_cmd cmd = { 4444 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 4445 mvmvif->color)), 4446 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 4447 .tsf = cpu_to_le32(chsw->timestamp), 4448 .cs_count = chsw->count, 4449 .cs_mode = chsw->block_tx, 4450 }; 4451 4452 lockdep_assert_held(&mvm->mutex); 4453 4454 if (chsw->delay) 4455 cmd.cs_delayed_bcn_count = 4456 DIV_ROUND_UP(chsw->delay, vif->bss_conf.beacon_int); 4457 4458 return iwl_mvm_send_cmd_pdu(mvm, 4459 WIDE_ID(MAC_CONF_GROUP, 4460 CHANNEL_SWITCH_TIME_EVENT_CMD), 4461 0, sizeof(cmd), &cmd); 4462 } 4463 4464 static int iwl_mvm_old_pre_chan_sw_sta(struct iwl_mvm *mvm, 4465 struct ieee80211_vif *vif, 4466 struct ieee80211_channel_switch *chsw) 4467 { 4468 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4469 u32 apply_time; 4470 4471 /* Schedule the time event to a bit before beacon 1, 4472 * to make sure we're in the new channel when the 4473 * GO/AP arrives. In case count <= 1 immediately schedule the 4474 * TE (this might result with some packet loss or connection 4475 * loss). 4476 */ 4477 if (chsw->count <= 1) 4478 apply_time = 0; 4479 else 4480 apply_time = chsw->device_timestamp + 4481 ((vif->bss_conf.beacon_int * (chsw->count - 1) - 4482 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024); 4483 4484 if (chsw->block_tx) 4485 iwl_mvm_csa_client_absent(mvm, vif); 4486 4487 if (mvmvif->bf_data.bf_enabled) { 4488 int ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4489 4490 if (ret) 4491 return ret; 4492 } 4493 4494 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int, 4495 apply_time); 4496 4497 return 0; 4498 } 4499 4500 #define IWL_MAX_CSA_BLOCK_TX 1500 4501 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, 4502 struct ieee80211_vif *vif, 4503 struct ieee80211_channel_switch *chsw) 4504 { 4505 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4506 struct ieee80211_vif *csa_vif; 4507 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4508 int ret; 4509 4510 mutex_lock(&mvm->mutex); 4511 4512 mvmvif->csa_failed = false; 4513 4514 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n", 4515 chsw->chandef.center_freq1); 4516 4517 iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt, 4518 ieee80211_vif_to_wdev(vif), 4519 FW_DBG_TRIGGER_CHANNEL_SWITCH); 4520 4521 switch (vif->type) { 4522 case NL80211_IFTYPE_AP: 4523 csa_vif = 4524 rcu_dereference_protected(mvm->csa_vif, 4525 lockdep_is_held(&mvm->mutex)); 4526 if (WARN_ONCE(csa_vif && csa_vif->csa_active, 4527 "Another CSA is already in progress")) { 4528 ret = -EBUSY; 4529 goto out_unlock; 4530 } 4531 4532 /* we still didn't unblock tx. prevent new CS meanwhile */ 4533 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif, 4534 lockdep_is_held(&mvm->mutex))) { 4535 ret = -EBUSY; 4536 goto out_unlock; 4537 } 4538 4539 rcu_assign_pointer(mvm->csa_vif, vif); 4540 4541 if (WARN_ONCE(mvmvif->csa_countdown, 4542 "Previous CSA countdown didn't complete")) { 4543 ret = -EBUSY; 4544 goto out_unlock; 4545 } 4546 4547 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq; 4548 4549 break; 4550 case NL80211_IFTYPE_STATION: 4551 if (chsw->delay > IWL_MAX_CSA_BLOCK_TX) 4552 schedule_delayed_work(&mvmvif->csa_work, 0); 4553 4554 if (chsw->block_tx) { 4555 /* 4556 * In case of undetermined / long time with immediate 4557 * quiet monitor status to gracefully disconnect 4558 */ 4559 if (!chsw->count || 4560 chsw->count * vif->bss_conf.beacon_int > 4561 IWL_MAX_CSA_BLOCK_TX) 4562 schedule_delayed_work(&mvmvif->csa_work, 4563 msecs_to_jiffies(IWL_MAX_CSA_BLOCK_TX)); 4564 } 4565 4566 if (!fw_has_capa(&mvm->fw->ucode_capa, 4567 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { 4568 ret = iwl_mvm_old_pre_chan_sw_sta(mvm, vif, chsw); 4569 if (ret) 4570 goto out_unlock; 4571 } else { 4572 iwl_mvm_schedule_client_csa(mvm, vif, chsw); 4573 } 4574 4575 mvmvif->csa_count = chsw->count; 4576 mvmvif->csa_misbehave = false; 4577 break; 4578 default: 4579 break; 4580 } 4581 4582 mvmvif->ps_disabled = true; 4583 4584 ret = iwl_mvm_power_update_ps(mvm); 4585 if (ret) 4586 goto out_unlock; 4587 4588 /* we won't be on this channel any longer */ 4589 iwl_mvm_teardown_tdls_peers(mvm); 4590 4591 out_unlock: 4592 mutex_unlock(&mvm->mutex); 4593 4594 return ret; 4595 } 4596 4597 static void iwl_mvm_channel_switch_rx_beacon(struct ieee80211_hw *hw, 4598 struct ieee80211_vif *vif, 4599 struct ieee80211_channel_switch *chsw) 4600 { 4601 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4602 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4603 struct iwl_chan_switch_te_cmd cmd = { 4604 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 4605 mvmvif->color)), 4606 .action = cpu_to_le32(FW_CTXT_ACTION_MODIFY), 4607 .tsf = cpu_to_le32(chsw->timestamp), 4608 .cs_count = chsw->count, 4609 .cs_mode = chsw->block_tx, 4610 }; 4611 4612 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CS_MODIFY)) 4613 return; 4614 4615 if (chsw->count >= mvmvif->csa_count && chsw->block_tx) { 4616 if (mvmvif->csa_misbehave) { 4617 /* Second time, give up on this AP*/ 4618 iwl_mvm_abort_channel_switch(hw, vif); 4619 ieee80211_chswitch_done(vif, false); 4620 mvmvif->csa_misbehave = false; 4621 return; 4622 } 4623 mvmvif->csa_misbehave = true; 4624 } 4625 mvmvif->csa_count = chsw->count; 4626 4627 mutex_lock(&mvm->mutex); 4628 if (mvmvif->csa_failed) 4629 goto out_unlock; 4630 4631 IWL_DEBUG_MAC80211(mvm, "Modify CSA on mac %d\n", mvmvif->id); 4632 WARN_ON(iwl_mvm_send_cmd_pdu(mvm, 4633 WIDE_ID(MAC_CONF_GROUP, 4634 CHANNEL_SWITCH_TIME_EVENT_CMD), 4635 0, sizeof(cmd), &cmd)); 4636 out_unlock: 4637 mutex_unlock(&mvm->mutex); 4638 } 4639 4640 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop) 4641 { 4642 int i; 4643 4644 if (!iwl_mvm_has_new_tx_api(mvm)) { 4645 if (drop) { 4646 mutex_lock(&mvm->mutex); 4647 iwl_mvm_flush_tx_path(mvm, 4648 iwl_mvm_flushable_queues(mvm) & queues, 0); 4649 mutex_unlock(&mvm->mutex); 4650 } else { 4651 iwl_trans_wait_tx_queues_empty(mvm->trans, queues); 4652 } 4653 return; 4654 } 4655 4656 mutex_lock(&mvm->mutex); 4657 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 4658 struct ieee80211_sta *sta; 4659 4660 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4661 lockdep_is_held(&mvm->mutex)); 4662 if (IS_ERR_OR_NULL(sta)) 4663 continue; 4664 4665 if (drop) 4666 iwl_mvm_flush_sta_tids(mvm, i, 0xFFFF, 0); 4667 else 4668 iwl_mvm_wait_sta_queues_empty(mvm, 4669 iwl_mvm_sta_from_mac80211(sta)); 4670 } 4671 mutex_unlock(&mvm->mutex); 4672 } 4673 4674 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw, 4675 struct ieee80211_vif *vif, u32 queues, bool drop) 4676 { 4677 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4678 struct iwl_mvm_vif *mvmvif; 4679 struct iwl_mvm_sta *mvmsta; 4680 struct ieee80211_sta *sta; 4681 int i; 4682 u32 msk = 0; 4683 4684 if (!vif) { 4685 iwl_mvm_flush_no_vif(mvm, queues, drop); 4686 return; 4687 } 4688 4689 if (vif->type != NL80211_IFTYPE_STATION) 4690 return; 4691 4692 /* Make sure we're done with the deferred traffic before flushing */ 4693 flush_work(&mvm->add_stream_wk); 4694 4695 mutex_lock(&mvm->mutex); 4696 mvmvif = iwl_mvm_vif_from_mac80211(vif); 4697 4698 /* flush the AP-station and all TDLS peers */ 4699 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 4700 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4701 lockdep_is_held(&mvm->mutex)); 4702 if (IS_ERR_OR_NULL(sta)) 4703 continue; 4704 4705 mvmsta = iwl_mvm_sta_from_mac80211(sta); 4706 if (mvmsta->vif != vif) 4707 continue; 4708 4709 /* make sure only TDLS peers or the AP are flushed */ 4710 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls); 4711 4712 if (drop) { 4713 if (iwl_mvm_flush_sta(mvm, mvmsta, false)) 4714 IWL_ERR(mvm, "flush request fail\n"); 4715 } else { 4716 msk |= mvmsta->tfd_queue_msk; 4717 if (iwl_mvm_has_new_tx_api(mvm)) 4718 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta); 4719 } 4720 } 4721 4722 mutex_unlock(&mvm->mutex); 4723 4724 /* this can take a while, and we may need/want other operations 4725 * to succeed while doing this, so do it without the mutex held 4726 */ 4727 if (!drop && !iwl_mvm_has_new_tx_api(mvm)) 4728 iwl_trans_wait_tx_queues_empty(mvm->trans, msk); 4729 } 4730 4731 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx, 4732 struct survey_info *survey) 4733 { 4734 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4735 int ret; 4736 4737 memset(survey, 0, sizeof(*survey)); 4738 4739 /* only support global statistics right now */ 4740 if (idx != 0) 4741 return -ENOENT; 4742 4743 if (!fw_has_capa(&mvm->fw->ucode_capa, 4744 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4745 return -ENOENT; 4746 4747 mutex_lock(&mvm->mutex); 4748 4749 if (iwl_mvm_firmware_running(mvm)) { 4750 ret = iwl_mvm_request_statistics(mvm, false); 4751 if (ret) 4752 goto out; 4753 } 4754 4755 survey->filled = SURVEY_INFO_TIME | 4756 SURVEY_INFO_TIME_RX | 4757 SURVEY_INFO_TIME_TX | 4758 SURVEY_INFO_TIME_SCAN; 4759 survey->time = mvm->accu_radio_stats.on_time_rf + 4760 mvm->radio_stats.on_time_rf; 4761 do_div(survey->time, USEC_PER_MSEC); 4762 4763 survey->time_rx = mvm->accu_radio_stats.rx_time + 4764 mvm->radio_stats.rx_time; 4765 do_div(survey->time_rx, USEC_PER_MSEC); 4766 4767 survey->time_tx = mvm->accu_radio_stats.tx_time + 4768 mvm->radio_stats.tx_time; 4769 do_div(survey->time_tx, USEC_PER_MSEC); 4770 4771 survey->time_scan = mvm->accu_radio_stats.on_time_scan + 4772 mvm->radio_stats.on_time_scan; 4773 do_div(survey->time_scan, USEC_PER_MSEC); 4774 4775 ret = 0; 4776 out: 4777 mutex_unlock(&mvm->mutex); 4778 return ret; 4779 } 4780 4781 static void iwl_mvm_set_sta_rate(u32 rate_n_flags, struct rate_info *rinfo) 4782 { 4783 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { 4784 case RATE_MCS_CHAN_WIDTH_20: 4785 rinfo->bw = RATE_INFO_BW_20; 4786 break; 4787 case RATE_MCS_CHAN_WIDTH_40: 4788 rinfo->bw = RATE_INFO_BW_40; 4789 break; 4790 case RATE_MCS_CHAN_WIDTH_80: 4791 rinfo->bw = RATE_INFO_BW_80; 4792 break; 4793 case RATE_MCS_CHAN_WIDTH_160: 4794 rinfo->bw = RATE_INFO_BW_160; 4795 break; 4796 } 4797 4798 if (rate_n_flags & RATE_MCS_HT_MSK) { 4799 rinfo->flags |= RATE_INFO_FLAGS_MCS; 4800 rinfo->mcs = u32_get_bits(rate_n_flags, RATE_HT_MCS_INDEX_MSK); 4801 rinfo->nss = u32_get_bits(rate_n_flags, 4802 RATE_HT_MCS_NSS_MSK) + 1; 4803 if (rate_n_flags & RATE_MCS_SGI_MSK) 4804 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 4805 } else if (rate_n_flags & RATE_MCS_VHT_MSK) { 4806 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 4807 rinfo->mcs = u32_get_bits(rate_n_flags, 4808 RATE_VHT_MCS_RATE_CODE_MSK); 4809 rinfo->nss = u32_get_bits(rate_n_flags, 4810 RATE_VHT_MCS_NSS_MSK) + 1; 4811 if (rate_n_flags & RATE_MCS_SGI_MSK) 4812 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 4813 } else if (rate_n_flags & RATE_MCS_HE_MSK) { 4814 u32 gi_ltf = u32_get_bits(rate_n_flags, 4815 RATE_MCS_HE_GI_LTF_MSK); 4816 4817 rinfo->flags |= RATE_INFO_FLAGS_HE_MCS; 4818 rinfo->mcs = u32_get_bits(rate_n_flags, 4819 RATE_VHT_MCS_RATE_CODE_MSK); 4820 rinfo->nss = u32_get_bits(rate_n_flags, 4821 RATE_VHT_MCS_NSS_MSK) + 1; 4822 4823 if (rate_n_flags & RATE_MCS_HE_106T_MSK) { 4824 rinfo->bw = RATE_INFO_BW_HE_RU; 4825 rinfo->he_ru_alloc = NL80211_RATE_INFO_HE_RU_ALLOC_106; 4826 } 4827 4828 switch (rate_n_flags & RATE_MCS_HE_TYPE_MSK) { 4829 case RATE_MCS_HE_TYPE_SU: 4830 case RATE_MCS_HE_TYPE_EXT_SU: 4831 if (gi_ltf == 0 || gi_ltf == 1) 4832 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; 4833 else if (gi_ltf == 2) 4834 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; 4835 else if (rate_n_flags & RATE_MCS_SGI_MSK) 4836 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; 4837 else 4838 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; 4839 break; 4840 case RATE_MCS_HE_TYPE_MU: 4841 if (gi_ltf == 0 || gi_ltf == 1) 4842 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; 4843 else if (gi_ltf == 2) 4844 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; 4845 else 4846 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; 4847 break; 4848 case RATE_MCS_HE_TYPE_TRIG: 4849 if (gi_ltf == 0 || gi_ltf == 1) 4850 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; 4851 else 4852 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; 4853 break; 4854 } 4855 4856 if (rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK) 4857 rinfo->he_dcm = 1; 4858 } else { 4859 switch (u32_get_bits(rate_n_flags, RATE_LEGACY_RATE_MSK)) { 4860 case IWL_RATE_1M_PLCP: 4861 rinfo->legacy = 10; 4862 break; 4863 case IWL_RATE_2M_PLCP: 4864 rinfo->legacy = 20; 4865 break; 4866 case IWL_RATE_5M_PLCP: 4867 rinfo->legacy = 55; 4868 break; 4869 case IWL_RATE_11M_PLCP: 4870 rinfo->legacy = 110; 4871 break; 4872 case IWL_RATE_6M_PLCP: 4873 rinfo->legacy = 60; 4874 break; 4875 case IWL_RATE_9M_PLCP: 4876 rinfo->legacy = 90; 4877 break; 4878 case IWL_RATE_12M_PLCP: 4879 rinfo->legacy = 120; 4880 break; 4881 case IWL_RATE_18M_PLCP: 4882 rinfo->legacy = 180; 4883 break; 4884 case IWL_RATE_24M_PLCP: 4885 rinfo->legacy = 240; 4886 break; 4887 case IWL_RATE_36M_PLCP: 4888 rinfo->legacy = 360; 4889 break; 4890 case IWL_RATE_48M_PLCP: 4891 rinfo->legacy = 480; 4892 break; 4893 case IWL_RATE_54M_PLCP: 4894 rinfo->legacy = 540; 4895 break; 4896 } 4897 } 4898 } 4899 4900 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw, 4901 struct ieee80211_vif *vif, 4902 struct ieee80211_sta *sta, 4903 struct station_info *sinfo) 4904 { 4905 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4906 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4907 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4908 4909 if (mvmsta->avg_energy) { 4910 sinfo->signal_avg = -(s8)mvmsta->avg_energy; 4911 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); 4912 } 4913 4914 if (iwl_mvm_has_tlc_offload(mvm)) { 4915 struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw; 4916 4917 iwl_mvm_set_sta_rate(lq_sta->last_rate_n_flags, &sinfo->txrate); 4918 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE); 4919 } 4920 4921 /* if beacon filtering isn't on mac80211 does it anyway */ 4922 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER)) 4923 return; 4924 4925 if (!vif->bss_conf.assoc) 4926 return; 4927 4928 mutex_lock(&mvm->mutex); 4929 4930 if (mvmvif->ap_sta_id != mvmsta->sta_id) 4931 goto unlock; 4932 4933 if (iwl_mvm_request_statistics(mvm, false)) 4934 goto unlock; 4935 4936 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons + 4937 mvmvif->beacon_stats.accu_num_beacons; 4938 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX); 4939 if (mvmvif->beacon_stats.avg_signal) { 4940 /* firmware only reports a value after RXing a few beacons */ 4941 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal; 4942 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG); 4943 } 4944 unlock: 4945 mutex_unlock(&mvm->mutex); 4946 } 4947 4948 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm, 4949 struct ieee80211_vif *vif, 4950 const struct ieee80211_event *event) 4951 { 4952 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \ 4953 do { \ 4954 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \ 4955 break; \ 4956 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt); \ 4957 } while (0) 4958 4959 struct iwl_fw_dbg_trigger_tlv *trig; 4960 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 4961 4962 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 4963 FW_DBG_TRIGGER_MLME); 4964 if (!trig) 4965 return; 4966 4967 trig_mlme = (void *)trig->data; 4968 4969 if (event->u.mlme.data == ASSOC_EVENT) { 4970 if (event->u.mlme.status == MLME_DENIED) 4971 CHECK_MLME_TRIGGER(stop_assoc_denied, 4972 "DENIED ASSOC: reason %d", 4973 event->u.mlme.reason); 4974 else if (event->u.mlme.status == MLME_TIMEOUT) 4975 CHECK_MLME_TRIGGER(stop_assoc_timeout, 4976 "ASSOC TIMEOUT"); 4977 } else if (event->u.mlme.data == AUTH_EVENT) { 4978 if (event->u.mlme.status == MLME_DENIED) 4979 CHECK_MLME_TRIGGER(stop_auth_denied, 4980 "DENIED AUTH: reason %d", 4981 event->u.mlme.reason); 4982 else if (event->u.mlme.status == MLME_TIMEOUT) 4983 CHECK_MLME_TRIGGER(stop_auth_timeout, 4984 "AUTH TIMEOUT"); 4985 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) { 4986 CHECK_MLME_TRIGGER(stop_rx_deauth, 4987 "DEAUTH RX %d", event->u.mlme.reason); 4988 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) { 4989 CHECK_MLME_TRIGGER(stop_tx_deauth, 4990 "DEAUTH TX %d", event->u.mlme.reason); 4991 } 4992 #undef CHECK_MLME_TRIGGER 4993 } 4994 4995 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm, 4996 struct ieee80211_vif *vif, 4997 const struct ieee80211_event *event) 4998 { 4999 struct iwl_fw_dbg_trigger_tlv *trig; 5000 struct iwl_fw_dbg_trigger_ba *ba_trig; 5001 5002 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 5003 FW_DBG_TRIGGER_BA); 5004 if (!trig) 5005 return; 5006 5007 ba_trig = (void *)trig->data; 5008 5009 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid))) 5010 return; 5011 5012 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 5013 "BAR received from %pM, tid %d, ssn %d", 5014 event->u.ba.sta->addr, event->u.ba.tid, 5015 event->u.ba.ssn); 5016 } 5017 5018 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw, 5019 struct ieee80211_vif *vif, 5020 const struct ieee80211_event *event) 5021 { 5022 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5023 5024 switch (event->type) { 5025 case MLME_EVENT: 5026 iwl_mvm_event_mlme_callback(mvm, vif, event); 5027 break; 5028 case BAR_RX_EVENT: 5029 iwl_mvm_event_bar_rx_callback(mvm, vif, event); 5030 break; 5031 case BA_FRAME_TIMEOUT: 5032 iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta, 5033 event->u.ba.tid); 5034 break; 5035 default: 5036 break; 5037 } 5038 } 5039 5040 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm, 5041 struct iwl_mvm_internal_rxq_notif *notif, 5042 u32 size) 5043 { 5044 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1; 5045 int ret; 5046 5047 5048 if (!iwl_mvm_has_new_rx_api(mvm)) 5049 return; 5050 5051 if (notif->sync) { 5052 notif->cookie = mvm->queue_sync_cookie; 5053 mvm->queue_sync_state = (1 << mvm->trans->num_rx_queues) - 1; 5054 } 5055 5056 ret = iwl_mvm_notify_rx_queue(mvm, qmask, notif, size, !notif->sync); 5057 if (ret) { 5058 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret); 5059 goto out; 5060 } 5061 5062 if (notif->sync) { 5063 lockdep_assert_held(&mvm->mutex); 5064 ret = wait_event_timeout(mvm->rx_sync_waitq, 5065 READ_ONCE(mvm->queue_sync_state) == 0 || 5066 iwl_mvm_is_radio_killed(mvm), 5067 HZ); 5068 WARN_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm), 5069 "queue sync: failed to sync, state is 0x%lx\n", 5070 mvm->queue_sync_state); 5071 } 5072 5073 out: 5074 mvm->queue_sync_state = 0; 5075 if (notif->sync) 5076 mvm->queue_sync_cookie++; 5077 } 5078 5079 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw) 5080 { 5081 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5082 struct iwl_mvm_internal_rxq_notif data = { 5083 .type = IWL_MVM_RXQ_EMPTY, 5084 .sync = 1, 5085 }; 5086 5087 mutex_lock(&mvm->mutex); 5088 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data)); 5089 mutex_unlock(&mvm->mutex); 5090 } 5091 5092 static int 5093 iwl_mvm_mac_get_ftm_responder_stats(struct ieee80211_hw *hw, 5094 struct ieee80211_vif *vif, 5095 struct cfg80211_ftm_responder_stats *stats) 5096 { 5097 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5098 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 5099 5100 if (vif->p2p || vif->type != NL80211_IFTYPE_AP || 5101 !mvmvif->ap_ibss_active || !vif->bss_conf.ftm_responder) 5102 return -EINVAL; 5103 5104 mutex_lock(&mvm->mutex); 5105 *stats = mvm->ftm_resp_stats; 5106 mutex_unlock(&mvm->mutex); 5107 5108 stats->filled = BIT(NL80211_FTM_STATS_SUCCESS_NUM) | 5109 BIT(NL80211_FTM_STATS_PARTIAL_NUM) | 5110 BIT(NL80211_FTM_STATS_FAILED_NUM) | 5111 BIT(NL80211_FTM_STATS_ASAP_NUM) | 5112 BIT(NL80211_FTM_STATS_NON_ASAP_NUM) | 5113 BIT(NL80211_FTM_STATS_TOTAL_DURATION_MSEC) | 5114 BIT(NL80211_FTM_STATS_UNKNOWN_TRIGGERS_NUM) | 5115 BIT(NL80211_FTM_STATS_RESCHEDULE_REQUESTS_NUM) | 5116 BIT(NL80211_FTM_STATS_OUT_OF_WINDOW_TRIGGERS_NUM); 5117 5118 return 0; 5119 } 5120 5121 static int iwl_mvm_start_pmsr(struct ieee80211_hw *hw, 5122 struct ieee80211_vif *vif, 5123 struct cfg80211_pmsr_request *request) 5124 { 5125 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5126 int ret; 5127 5128 mutex_lock(&mvm->mutex); 5129 ret = iwl_mvm_ftm_start(mvm, vif, request); 5130 mutex_unlock(&mvm->mutex); 5131 5132 return ret; 5133 } 5134 5135 static void iwl_mvm_abort_pmsr(struct ieee80211_hw *hw, 5136 struct ieee80211_vif *vif, 5137 struct cfg80211_pmsr_request *request) 5138 { 5139 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5140 5141 mutex_lock(&mvm->mutex); 5142 iwl_mvm_ftm_abort(mvm, request); 5143 mutex_unlock(&mvm->mutex); 5144 } 5145 5146 static bool iwl_mvm_can_hw_csum(struct sk_buff *skb) 5147 { 5148 u8 protocol = ip_hdr(skb)->protocol; 5149 5150 if (!IS_ENABLED(CONFIG_INET)) 5151 return false; 5152 5153 return protocol == IPPROTO_TCP || protocol == IPPROTO_UDP; 5154 } 5155 5156 static bool iwl_mvm_mac_can_aggregate(struct ieee80211_hw *hw, 5157 struct sk_buff *head, 5158 struct sk_buff *skb) 5159 { 5160 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5161 5162 /* For now don't aggregate IPv6 in AMSDU */ 5163 if (skb->protocol != htons(ETH_P_IP)) 5164 return false; 5165 5166 if (!iwl_mvm_is_csum_supported(mvm)) 5167 return true; 5168 5169 return iwl_mvm_can_hw_csum(skb) == iwl_mvm_can_hw_csum(head); 5170 } 5171 5172 const struct ieee80211_ops iwl_mvm_hw_ops = { 5173 .tx = iwl_mvm_mac_tx, 5174 .wake_tx_queue = iwl_mvm_mac_wake_tx_queue, 5175 .ampdu_action = iwl_mvm_mac_ampdu_action, 5176 .get_antenna = iwl_mvm_op_get_antenna, 5177 .start = iwl_mvm_mac_start, 5178 .reconfig_complete = iwl_mvm_mac_reconfig_complete, 5179 .stop = iwl_mvm_mac_stop, 5180 .add_interface = iwl_mvm_mac_add_interface, 5181 .remove_interface = iwl_mvm_mac_remove_interface, 5182 .config = iwl_mvm_mac_config, 5183 .prepare_multicast = iwl_mvm_prepare_multicast, 5184 .configure_filter = iwl_mvm_configure_filter, 5185 .config_iface_filter = iwl_mvm_config_iface_filter, 5186 .bss_info_changed = iwl_mvm_bss_info_changed, 5187 .hw_scan = iwl_mvm_mac_hw_scan, 5188 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan, 5189 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove, 5190 .sta_state = iwl_mvm_mac_sta_state, 5191 .sta_notify = iwl_mvm_mac_sta_notify, 5192 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames, 5193 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames, 5194 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold, 5195 .sta_rc_update = iwl_mvm_sta_rc_update, 5196 .conf_tx = iwl_mvm_mac_conf_tx, 5197 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx, 5198 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover, 5199 .flush = iwl_mvm_mac_flush, 5200 .sched_scan_start = iwl_mvm_mac_sched_scan_start, 5201 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop, 5202 .set_key = iwl_mvm_mac_set_key, 5203 .update_tkip_key = iwl_mvm_mac_update_tkip_key, 5204 .remain_on_channel = iwl_mvm_roc, 5205 .cancel_remain_on_channel = iwl_mvm_cancel_roc, 5206 .add_chanctx = iwl_mvm_add_chanctx, 5207 .remove_chanctx = iwl_mvm_remove_chanctx, 5208 .change_chanctx = iwl_mvm_change_chanctx, 5209 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx, 5210 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx, 5211 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx, 5212 5213 .start_ap = iwl_mvm_start_ap_ibss, 5214 .stop_ap = iwl_mvm_stop_ap_ibss, 5215 .join_ibss = iwl_mvm_start_ap_ibss, 5216 .leave_ibss = iwl_mvm_stop_ap_ibss, 5217 5218 .tx_last_beacon = iwl_mvm_tx_last_beacon, 5219 5220 .set_tim = iwl_mvm_set_tim, 5221 5222 .channel_switch = iwl_mvm_channel_switch, 5223 .pre_channel_switch = iwl_mvm_pre_channel_switch, 5224 .post_channel_switch = iwl_mvm_post_channel_switch, 5225 .abort_channel_switch = iwl_mvm_abort_channel_switch, 5226 .channel_switch_rx_beacon = iwl_mvm_channel_switch_rx_beacon, 5227 5228 .tdls_channel_switch = iwl_mvm_tdls_channel_switch, 5229 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch, 5230 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch, 5231 5232 .event_callback = iwl_mvm_mac_event_callback, 5233 5234 .sync_rx_queues = iwl_mvm_sync_rx_queues, 5235 5236 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd) 5237 5238 #ifdef CONFIG_PM_SLEEP 5239 /* look at d3.c */ 5240 .suspend = iwl_mvm_suspend, 5241 .resume = iwl_mvm_resume, 5242 .set_wakeup = iwl_mvm_set_wakeup, 5243 .set_rekey_data = iwl_mvm_set_rekey_data, 5244 #if IS_ENABLED(CONFIG_IPV6) 5245 .ipv6_addr_change = iwl_mvm_ipv6_addr_change, 5246 #endif 5247 .set_default_unicast_key = iwl_mvm_set_default_unicast_key, 5248 #endif 5249 .get_survey = iwl_mvm_mac_get_survey, 5250 .sta_statistics = iwl_mvm_mac_sta_statistics, 5251 .get_ftm_responder_stats = iwl_mvm_mac_get_ftm_responder_stats, 5252 .start_pmsr = iwl_mvm_start_pmsr, 5253 .abort_pmsr = iwl_mvm_abort_pmsr, 5254 5255 .can_aggregate_in_amsdu = iwl_mvm_mac_can_aggregate, 5256 #ifdef CONFIG_IWLWIFI_DEBUGFS 5257 .sta_add_debugfs = iwl_mvm_sta_add_debugfs, 5258 #endif 5259 }; 5260