1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2020 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <linux/kernel.h> 8 #include <linux/slab.h> 9 #include <linux/skbuff.h> 10 #include <linux/netdevice.h> 11 #include <linux/etherdevice.h> 12 #include <linux/ip.h> 13 #include <linux/if_arp.h> 14 #include <linux/time.h> 15 #if defined(__FreeBSD__) 16 #include <linux/math64.h> 17 #endif 18 #include <net/mac80211.h> 19 #include <net/ieee80211_radiotap.h> 20 #include <net/tcp.h> 21 #if defined(__FreeBSD__) 22 #include <linux/udp.h> 23 #endif 24 25 #include "iwl-op-mode.h" 26 #include "iwl-io.h" 27 #include "mvm.h" 28 #include "sta.h" 29 #include "time-event.h" 30 #include "iwl-eeprom-parse.h" 31 #include "iwl-phy-db.h" 32 #ifdef CONFIG_NL80211_TESTMODE 33 #include "testmode.h" 34 #endif 35 #include "fw/error-dump.h" 36 #include "iwl-prph.h" 37 #include "iwl-nvm-parse.h" 38 39 static const struct ieee80211_iface_limit iwl_mvm_limits[] = { 40 { 41 .max = 1, 42 .types = BIT(NL80211_IFTYPE_STATION), 43 }, 44 { 45 .max = 1, 46 .types = BIT(NL80211_IFTYPE_AP) | 47 BIT(NL80211_IFTYPE_P2P_CLIENT) | 48 BIT(NL80211_IFTYPE_P2P_GO), 49 }, 50 { 51 .max = 1, 52 .types = BIT(NL80211_IFTYPE_P2P_DEVICE), 53 }, 54 }; 55 56 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = { 57 { 58 .num_different_channels = 2, 59 .max_interfaces = 3, 60 .limits = iwl_mvm_limits, 61 .n_limits = ARRAY_SIZE(iwl_mvm_limits), 62 }, 63 }; 64 65 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 66 /* 67 * Use the reserved field to indicate magic values. 68 * these values will only be used internally by the driver, 69 * and won't make it to the fw (reserved will be 0). 70 * BC_FILTER_MAGIC_IP - configure the val of this attribute to 71 * be the vif's ip address. in case there is not a single 72 * ip address (0, or more than 1), this attribute will 73 * be skipped. 74 * BC_FILTER_MAGIC_MAC - set the val of this attribute to 75 * the LSB bytes of the vif's mac address 76 */ 77 enum { 78 BC_FILTER_MAGIC_NONE = 0, 79 BC_FILTER_MAGIC_IP, 80 BC_FILTER_MAGIC_MAC, 81 }; 82 83 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = { 84 { 85 /* arp */ 86 .discard = 0, 87 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL, 88 .attrs = { 89 { 90 /* frame type - arp, hw type - ethernet */ 91 .offset_type = 92 BCAST_FILTER_OFFSET_PAYLOAD_START, 93 .offset = sizeof(rfc1042_header), 94 .val = cpu_to_be32(0x08060001), 95 .mask = cpu_to_be32(0xffffffff), 96 }, 97 { 98 /* arp dest ip */ 99 .offset_type = 100 BCAST_FILTER_OFFSET_PAYLOAD_START, 101 .offset = sizeof(rfc1042_header) + 2 + 102 sizeof(struct arphdr) + 103 ETH_ALEN + sizeof(__be32) + 104 ETH_ALEN, 105 .mask = cpu_to_be32(0xffffffff), 106 /* mark it as special field */ 107 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP), 108 }, 109 }, 110 }, 111 { 112 /* dhcp offer bcast */ 113 .discard = 0, 114 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4, 115 .attrs = { 116 { 117 /* udp dest port - 68 (bootp client)*/ 118 .offset_type = BCAST_FILTER_OFFSET_IP_END, 119 .offset = offsetof(struct udphdr, dest), 120 .val = cpu_to_be32(0x00440000), 121 .mask = cpu_to_be32(0xffff0000), 122 }, 123 { 124 /* dhcp - lsb bytes of client hw address */ 125 .offset_type = BCAST_FILTER_OFFSET_IP_END, 126 .offset = 38, 127 .mask = cpu_to_be32(0xffffffff), 128 /* mark it as special field */ 129 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC), 130 }, 131 }, 132 }, 133 /* last filter must be empty */ 134 {}, 135 }; 136 #endif 137 138 static const struct cfg80211_pmsr_capabilities iwl_mvm_pmsr_capa = { 139 .max_peers = IWL_MVM_TOF_MAX_APS, 140 .report_ap_tsf = 1, 141 .randomize_mac_addr = 1, 142 143 .ftm = { 144 .supported = 1, 145 .asap = 1, 146 .non_asap = 1, 147 .request_lci = 1, 148 .request_civicloc = 1, 149 .trigger_based = 1, 150 .non_trigger_based = 1, 151 .max_bursts_exponent = -1, /* all supported */ 152 .max_ftms_per_burst = 0, /* no limits */ 153 .bandwidths = BIT(NL80211_CHAN_WIDTH_20_NOHT) | 154 BIT(NL80211_CHAN_WIDTH_20) | 155 BIT(NL80211_CHAN_WIDTH_40) | 156 BIT(NL80211_CHAN_WIDTH_80) | 157 BIT(NL80211_CHAN_WIDTH_160), 158 .preambles = BIT(NL80211_PREAMBLE_LEGACY) | 159 BIT(NL80211_PREAMBLE_HT) | 160 BIT(NL80211_PREAMBLE_VHT) | 161 BIT(NL80211_PREAMBLE_HE), 162 }, 163 }; 164 165 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 166 enum set_key_cmd cmd, 167 struct ieee80211_vif *vif, 168 struct ieee80211_sta *sta, 169 struct ieee80211_key_conf *key); 170 171 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm) 172 { 173 int i; 174 175 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts)); 176 for (i = 0; i < NUM_PHY_CTX; i++) { 177 mvm->phy_ctxts[i].id = i; 178 mvm->phy_ctxts[i].ref = 0; 179 } 180 } 181 182 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy, 183 const char *alpha2, 184 enum iwl_mcc_source src_id, 185 bool *changed) 186 { 187 struct ieee80211_regdomain *regd = NULL; 188 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 189 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 190 struct iwl_mcc_update_resp *resp; 191 u8 resp_ver; 192 193 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2); 194 195 lockdep_assert_held(&mvm->mutex); 196 197 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id); 198 if (IS_ERR_OR_NULL(resp)) { 199 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n", 200 PTR_ERR_OR_ZERO(resp)); 201 goto out; 202 } 203 204 if (changed) { 205 u32 status = le32_to_cpu(resp->status); 206 207 *changed = (status == MCC_RESP_NEW_CHAN_PROFILE || 208 status == MCC_RESP_ILLEGAL); 209 } 210 resp_ver = iwl_fw_lookup_notif_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, 211 MCC_UPDATE_CMD, 0); 212 IWL_DEBUG_LAR(mvm, "MCC update response version: %d\n", resp_ver); 213 214 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg, 215 __le32_to_cpu(resp->n_channels), 216 resp->channels, 217 __le16_to_cpu(resp->mcc), 218 __le16_to_cpu(resp->geo_info), 219 __le16_to_cpu(resp->cap), resp_ver); 220 /* Store the return source id */ 221 src_id = resp->source_id; 222 kfree(resp); 223 if (IS_ERR_OR_NULL(regd)) { 224 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n", 225 PTR_ERR_OR_ZERO(regd)); 226 goto out; 227 } 228 229 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n", 230 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id); 231 mvm->lar_regdom_set = true; 232 mvm->mcc_src = src_id; 233 234 out: 235 return regd; 236 } 237 238 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm) 239 { 240 bool changed; 241 struct ieee80211_regdomain *regd; 242 243 if (!iwl_mvm_is_lar_supported(mvm)) 244 return; 245 246 regd = iwl_mvm_get_current_regdomain(mvm, &changed); 247 if (!IS_ERR_OR_NULL(regd)) { 248 /* only update the regulatory core if changed */ 249 if (changed) 250 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd); 251 252 kfree(regd); 253 } 254 } 255 256 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm, 257 bool *changed) 258 { 259 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ", 260 iwl_mvm_is_wifi_mcc_supported(mvm) ? 261 MCC_SOURCE_GET_CURRENT : 262 MCC_SOURCE_OLD_FW, changed); 263 } 264 265 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm) 266 { 267 enum iwl_mcc_source used_src; 268 struct ieee80211_regdomain *regd; 269 int ret; 270 bool changed; 271 const struct ieee80211_regdomain *r = 272 wiphy_dereference(mvm->hw->wiphy, mvm->hw->wiphy->regd); 273 274 if (!r) 275 return -ENOENT; 276 277 /* save the last source in case we overwrite it below */ 278 used_src = mvm->mcc_src; 279 if (iwl_mvm_is_wifi_mcc_supported(mvm)) { 280 /* Notify the firmware we support wifi location updates */ 281 regd = iwl_mvm_get_current_regdomain(mvm, NULL); 282 if (!IS_ERR_OR_NULL(regd)) 283 kfree(regd); 284 } 285 286 /* Now set our last stored MCC and source */ 287 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src, 288 &changed); 289 if (IS_ERR_OR_NULL(regd)) 290 return -EIO; 291 292 /* update cfg80211 if the regdomain was changed */ 293 if (changed) 294 ret = regulatory_set_wiphy_regd_sync(mvm->hw->wiphy, regd); 295 else 296 ret = 0; 297 298 kfree(regd); 299 return ret; 300 } 301 302 static const u8 he_if_types_ext_capa_sta[] = { 303 [0] = WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING, 304 [2] = WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT, 305 [7] = WLAN_EXT_CAPA8_OPMODE_NOTIF, 306 [9] = WLAN_EXT_CAPA10_TWT_REQUESTER_SUPPORT, 307 }; 308 309 static const struct wiphy_iftype_ext_capab he_iftypes_ext_capa[] = { 310 { 311 .iftype = NL80211_IFTYPE_STATION, 312 .extended_capabilities = he_if_types_ext_capa_sta, 313 .extended_capabilities_mask = he_if_types_ext_capa_sta, 314 .extended_capabilities_len = sizeof(he_if_types_ext_capa_sta), 315 }, 316 }; 317 318 static int 319 iwl_mvm_op_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant) 320 { 321 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 322 *tx_ant = iwl_mvm_get_valid_tx_ant(mvm); 323 *rx_ant = iwl_mvm_get_valid_rx_ant(mvm); 324 return 0; 325 } 326 327 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) 328 { 329 struct ieee80211_hw *hw = mvm->hw; 330 int num_mac, ret, i; 331 static const u32 mvm_ciphers[] = { 332 WLAN_CIPHER_SUITE_WEP40, 333 WLAN_CIPHER_SUITE_WEP104, 334 WLAN_CIPHER_SUITE_TKIP, 335 WLAN_CIPHER_SUITE_CCMP, 336 }; 337 #ifdef CONFIG_PM_SLEEP 338 bool unified = fw_has_capa(&mvm->fw->ucode_capa, 339 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 340 #endif 341 342 /* Tell mac80211 our characteristics */ 343 ieee80211_hw_set(hw, SIGNAL_DBM); 344 ieee80211_hw_set(hw, SPECTRUM_MGMT); 345 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 346 ieee80211_hw_set(hw, WANT_MONITOR_VIF); 347 ieee80211_hw_set(hw, SUPPORTS_PS); 348 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 349 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 350 ieee80211_hw_set(hw, TIMING_BEACON_ONLY); 351 ieee80211_hw_set(hw, CONNECTION_MONITOR); 352 ieee80211_hw_set(hw, CHANCTX_STA_CSA); 353 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); 354 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS); 355 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU); 356 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR); 357 ieee80211_hw_set(hw, DEAUTH_NEED_MGD_TX_PREP); 358 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW); 359 ieee80211_hw_set(hw, BUFF_MMPDU_TXQ); 360 ieee80211_hw_set(hw, STA_MMPDU_TXQ); 361 /* 362 * On older devices, enabling TX A-MSDU occasionally leads to 363 * something getting messed up, the command read from the FIFO 364 * gets out of sync and isn't a TX command, so that we have an 365 * assert EDC. 366 * 367 * It's not clear where the bug is, but since we didn't used to 368 * support A-MSDU until moving the mac80211 iTXQs, just leave it 369 * for older devices. We also don't see this issue on any newer 370 * devices. 371 */ 372 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_9000) 373 ieee80211_hw_set(hw, TX_AMSDU); 374 ieee80211_hw_set(hw, TX_FRAG_LIST); 375 376 if (iwl_mvm_has_tlc_offload(mvm)) { 377 ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW); 378 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 379 } 380 381 if (iwl_mvm_has_new_rx_api(mvm)) 382 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER); 383 384 if (fw_has_capa(&mvm->fw->ucode_capa, 385 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) { 386 ieee80211_hw_set(hw, AP_LINK_PS); 387 } else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) { 388 /* 389 * we absolutely need this for the new TX API since that comes 390 * with many more queues than the current code can deal with 391 * for station powersave 392 */ 393 return -EINVAL; 394 } 395 396 if (mvm->trans->num_rx_queues > 1) 397 ieee80211_hw_set(hw, USES_RSS); 398 399 if (mvm->trans->max_skb_frags) 400 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG; 401 402 hw->queues = IEEE80211_NUM_ACS; 403 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE; 404 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC | 405 IEEE80211_RADIOTAP_MCS_HAVE_STBC; 406 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC | 407 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED; 408 409 hw->radiotap_timestamp.units_pos = 410 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US | 411 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ; 412 /* this is the case for CCK frames, it's better (only 8) for OFDM */ 413 hw->radiotap_timestamp.accuracy = 22; 414 415 if (!iwl_mvm_has_tlc_offload(mvm)) 416 hw->rate_control_algorithm = RS_NAME; 417 418 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES; 419 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP; 420 hw->max_tx_fragments = mvm->trans->max_skb_frags; 421 422 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6); 423 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers)); 424 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers); 425 hw->wiphy->cipher_suites = mvm->ciphers; 426 427 if (iwl_mvm_has_new_rx_api(mvm)) { 428 mvm->ciphers[hw->wiphy->n_cipher_suites] = 429 WLAN_CIPHER_SUITE_GCMP; 430 hw->wiphy->n_cipher_suites++; 431 mvm->ciphers[hw->wiphy->n_cipher_suites] = 432 WLAN_CIPHER_SUITE_GCMP_256; 433 hw->wiphy->n_cipher_suites++; 434 } 435 436 if (iwlwifi_mod_params.swcrypto) 437 IWL_ERR(mvm, 438 "iwlmvm doesn't allow to disable HW crypto, check swcrypto module parameter\n"); 439 if (!iwlwifi_mod_params.bt_coex_active) 440 IWL_ERR(mvm, 441 "iwlmvm doesn't allow to disable BT Coex, check bt_coex_active module parameter\n"); 442 443 ieee80211_hw_set(hw, MFP_CAPABLE); 444 mvm->ciphers[hw->wiphy->n_cipher_suites] = WLAN_CIPHER_SUITE_AES_CMAC; 445 hw->wiphy->n_cipher_suites++; 446 if (iwl_mvm_has_new_rx_api(mvm)) { 447 mvm->ciphers[hw->wiphy->n_cipher_suites] = 448 WLAN_CIPHER_SUITE_BIP_GMAC_128; 449 hw->wiphy->n_cipher_suites++; 450 mvm->ciphers[hw->wiphy->n_cipher_suites] = 451 WLAN_CIPHER_SUITE_BIP_GMAC_256; 452 hw->wiphy->n_cipher_suites++; 453 } 454 455 /* currently FW API supports only one optional cipher scheme */ 456 if (mvm->fw->cs[0].cipher) { 457 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0]; 458 struct ieee80211_cipher_scheme *cs = &mvm->cs[0]; 459 460 mvm->hw->n_cipher_schemes = 1; 461 462 cs->cipher = le32_to_cpu(fwcs->cipher); 463 cs->iftype = BIT(NL80211_IFTYPE_STATION); 464 cs->hdr_len = fwcs->hdr_len; 465 cs->pn_len = fwcs->pn_len; 466 cs->pn_off = fwcs->pn_off; 467 cs->key_idx_off = fwcs->key_idx_off; 468 cs->key_idx_mask = fwcs->key_idx_mask; 469 cs->key_idx_shift = fwcs->key_idx_shift; 470 cs->mic_len = fwcs->mic_len; 471 472 mvm->hw->cipher_schemes = mvm->cs; 473 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher; 474 hw->wiphy->n_cipher_suites++; 475 } 476 477 if (fw_has_capa(&mvm->fw->ucode_capa, 478 IWL_UCODE_TLV_CAPA_FTM_CALIBRATED)) { 479 wiphy_ext_feature_set(hw->wiphy, 480 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER); 481 hw->wiphy->pmsr_capa = &iwl_mvm_pmsr_capa; 482 } 483 484 if (fw_has_capa(&mvm->fw->ucode_capa, 485 IWL_UCODE_TLV_CAPA_BIGTK_SUPPORT)) 486 wiphy_ext_feature_set(hw->wiphy, 487 NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT); 488 489 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS); 490 hw->wiphy->features |= 491 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR | 492 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR | 493 NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 494 495 hw->sta_data_size = sizeof(struct iwl_mvm_sta); 496 hw->vif_data_size = sizeof(struct iwl_mvm_vif); 497 hw->chanctx_data_size = sizeof(u16); 498 hw->txq_data_size = sizeof(struct iwl_mvm_txq); 499 500 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 501 BIT(NL80211_IFTYPE_P2P_CLIENT) | 502 BIT(NL80211_IFTYPE_AP) | 503 BIT(NL80211_IFTYPE_P2P_GO) | 504 BIT(NL80211_IFTYPE_P2P_DEVICE) | 505 BIT(NL80211_IFTYPE_ADHOC); 506 507 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; 508 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS); 509 510 /* The new Tx API does not allow to pass the key or keyid of a MPDU to 511 * the hw, preventing us to control which key(id) to use per MPDU. 512 * Till that's fixed we can't use Extended Key ID for the newer cards. 513 */ 514 if (!iwl_mvm_has_new_tx_api(mvm)) 515 wiphy_ext_feature_set(hw->wiphy, 516 NL80211_EXT_FEATURE_EXT_KEY_ID); 517 hw->wiphy->features |= NL80211_FEATURE_HT_IBSS; 518 519 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR; 520 if (iwl_mvm_is_lar_supported(mvm)) 521 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED; 522 else 523 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | 524 REGULATORY_DISABLE_BEACON_HINTS; 525 526 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; 527 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; 528 hw->wiphy->flags |= WIPHY_FLAG_SPLIT_SCAN_6GHZ; 529 530 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations; 531 hw->wiphy->n_iface_combinations = 532 ARRAY_SIZE(iwl_mvm_iface_combinations); 533 534 hw->wiphy->max_remain_on_channel_duration = 10000; 535 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; 536 537 /* Extract MAC address */ 538 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN); 539 hw->wiphy->addresses = mvm->addresses; 540 hw->wiphy->n_addresses = 1; 541 542 /* Extract additional MAC addresses if available */ 543 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ? 544 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1; 545 546 for (i = 1; i < num_mac; i++) { 547 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr, 548 ETH_ALEN); 549 mvm->addresses[i].addr[5]++; 550 hw->wiphy->n_addresses++; 551 } 552 553 iwl_mvm_reset_phy_ctxts(mvm); 554 555 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm); 556 557 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; 558 559 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK); 560 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) || 561 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK)); 562 563 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 564 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS; 565 else 566 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS; 567 568 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels) 569 hw->wiphy->bands[NL80211_BAND_2GHZ] = 570 &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 571 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) { 572 hw->wiphy->bands[NL80211_BAND_5GHZ] = 573 &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 574 575 if (fw_has_capa(&mvm->fw->ucode_capa, 576 IWL_UCODE_TLV_CAPA_BEAMFORMER) && 577 fw_has_api(&mvm->fw->ucode_capa, 578 IWL_UCODE_TLV_API_LQ_SS_PARAMS)) 579 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |= 580 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE; 581 } 582 if (fw_has_capa(&mvm->fw->ucode_capa, 583 IWL_UCODE_TLV_CAPA_PSC_CHAN_SUPPORT) && 584 mvm->nvm_data->bands[NL80211_BAND_6GHZ].n_channels) 585 hw->wiphy->bands[NL80211_BAND_6GHZ] = 586 &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; 587 588 hw->wiphy->hw_version = mvm->trans->hw_id; 589 590 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 591 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; 592 else 593 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; 594 595 hw->wiphy->max_sched_scan_reqs = 1; 596 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX; 597 hw->wiphy->max_match_sets = iwl_umac_scan_get_max_profiles(mvm->fw); 598 /* we create the 802.11 header and zero length SSID IE. */ 599 hw->wiphy->max_sched_scan_ie_len = 600 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2; 601 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS; 602 hw->wiphy->max_sched_scan_plan_interval = U16_MAX; 603 604 /* 605 * the firmware uses u8 for num of iterations, but 0xff is saved for 606 * infinite loop, so the maximum number of iterations is actually 254. 607 */ 608 hw->wiphy->max_sched_scan_plan_iterations = 254; 609 610 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN | 611 NL80211_FEATURE_LOW_PRIORITY_SCAN | 612 NL80211_FEATURE_P2P_GO_OPPPS | 613 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | 614 NL80211_FEATURE_DYNAMIC_SMPS | 615 NL80211_FEATURE_STATIC_SMPS | 616 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION; 617 618 if (fw_has_capa(&mvm->fw->ucode_capa, 619 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)) 620 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION; 621 if (fw_has_capa(&mvm->fw->ucode_capa, 622 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)) 623 hw->wiphy->features |= NL80211_FEATURE_QUIET; 624 625 if (fw_has_capa(&mvm->fw->ucode_capa, 626 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) 627 hw->wiphy->features |= 628 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES; 629 630 if (fw_has_capa(&mvm->fw->ucode_capa, 631 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 632 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES; 633 634 if (iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, 635 WOWLAN_KEK_KCK_MATERIAL, 636 IWL_FW_CMD_VER_UNKNOWN) == 3) 637 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK; 638 639 if (fw_has_api(&mvm->fw->ucode_capa, 640 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) { 641 wiphy_ext_feature_set(hw->wiphy, 642 NL80211_EXT_FEATURE_SCAN_START_TIME); 643 wiphy_ext_feature_set(hw->wiphy, 644 NL80211_EXT_FEATURE_BSS_PARENT_TSF); 645 } 646 647 if (iwl_mvm_is_oce_supported(mvm)) { 648 wiphy_ext_feature_set(hw->wiphy, 649 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP); 650 wiphy_ext_feature_set(hw->wiphy, 651 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME); 652 wiphy_ext_feature_set(hw->wiphy, 653 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION); 654 wiphy_ext_feature_set(hw->wiphy, 655 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE); 656 } 657 658 if (mvm->nvm_data->sku_cap_11ax_enable && 659 !iwlwifi_mod_params.disable_11ax) { 660 hw->wiphy->iftype_ext_capab = he_iftypes_ext_capa; 661 hw->wiphy->num_iftype_ext_capab = 662 ARRAY_SIZE(he_iftypes_ext_capa); 663 664 ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID); 665 ieee80211_hw_set(hw, SUPPORTS_ONLY_HE_MULTI_BSSID); 666 } 667 668 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; 669 670 #ifdef CONFIG_PM_SLEEP 671 if ((unified || mvm->fw->img[IWL_UCODE_WOWLAN].num_sec) && 672 mvm->trans->ops->d3_suspend && 673 mvm->trans->ops->d3_resume && 674 device_can_wakeup(mvm->trans->dev)) { 675 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT | 676 WIPHY_WOWLAN_DISCONNECT | 677 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 678 WIPHY_WOWLAN_RFKILL_RELEASE | 679 WIPHY_WOWLAN_NET_DETECT; 680 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 681 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 682 WIPHY_WOWLAN_4WAY_HANDSHAKE; 683 684 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS; 685 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN; 686 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN; 687 mvm->wowlan.max_nd_match_sets = 688 iwl_umac_scan_get_max_profiles(mvm->fw); 689 hw->wiphy->wowlan = &mvm->wowlan; 690 } 691 #endif 692 693 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 694 /* assign default bcast filtering configuration */ 695 mvm->bcast_filters = iwl_mvm_default_bcast_filters; 696 #endif 697 698 ret = iwl_mvm_leds_init(mvm); 699 if (ret) 700 return ret; 701 702 if (fw_has_capa(&mvm->fw->ucode_capa, 703 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) { 704 IWL_DEBUG_TDLS(mvm, "TDLS supported\n"); 705 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS; 706 ieee80211_hw_set(hw, TDLS_WIDER_BW); 707 } 708 709 if (fw_has_capa(&mvm->fw->ucode_capa, 710 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) { 711 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n"); 712 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH; 713 } 714 715 hw->netdev_features |= mvm->cfg->features; 716 if (!iwl_mvm_is_csum_supported(mvm)) 717 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS | 718 NETIF_F_RXCSUM); 719 720 if (mvm->cfg->vht_mu_mimo_supported) 721 wiphy_ext_feature_set(hw->wiphy, 722 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER); 723 724 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_PROTECTED_TWT)) 725 wiphy_ext_feature_set(hw->wiphy, 726 NL80211_EXT_FEATURE_PROTECTED_TWT); 727 728 hw->wiphy->available_antennas_tx = iwl_mvm_get_valid_tx_ant(mvm); 729 hw->wiphy->available_antennas_rx = iwl_mvm_get_valid_rx_ant(mvm); 730 731 ret = ieee80211_register_hw(mvm->hw); 732 if (ret) { 733 iwl_mvm_leds_exit(mvm); 734 } 735 736 return ret; 737 } 738 739 static void iwl_mvm_tx_skb(struct iwl_mvm *mvm, struct sk_buff *skb, 740 struct ieee80211_sta *sta) 741 { 742 if (likely(sta)) { 743 if (likely(iwl_mvm_tx_skb_sta(mvm, skb, sta) == 0)) 744 return; 745 } else { 746 if (likely(iwl_mvm_tx_skb_non_sta(mvm, skb) == 0)) 747 return; 748 } 749 750 ieee80211_free_txskb(mvm->hw, skb); 751 } 752 753 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw, 754 struct ieee80211_tx_control *control, 755 struct sk_buff *skb) 756 { 757 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 758 struct ieee80211_sta *sta = control->sta; 759 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 760 struct ieee80211_hdr *hdr = (void *)skb->data; 761 bool offchannel = IEEE80211_SKB_CB(skb)->flags & 762 IEEE80211_TX_CTL_TX_OFFCHAN; 763 764 if (iwl_mvm_is_radio_killed(mvm)) { 765 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n"); 766 goto drop; 767 } 768 769 if (offchannel && 770 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) && 771 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status)) 772 goto drop; 773 774 /* 775 * bufferable MMPDUs or MMPDUs on STA interfaces come via TXQs 776 * so we treat the others as broadcast 777 */ 778 if (ieee80211_is_mgmt(hdr->frame_control)) 779 sta = NULL; 780 781 /* If there is no sta, and it's not offchannel - send through AP */ 782 if (!sta && info->control.vif->type == NL80211_IFTYPE_STATION && 783 !offchannel) { 784 struct iwl_mvm_vif *mvmvif = 785 iwl_mvm_vif_from_mac80211(info->control.vif); 786 u8 ap_sta_id = READ_ONCE(mvmvif->ap_sta_id); 787 788 if (ap_sta_id < mvm->fw->ucode_capa.num_stations) { 789 /* mac80211 holds rcu read lock */ 790 sta = rcu_dereference(mvm->fw_id_to_mac_id[ap_sta_id]); 791 if (IS_ERR_OR_NULL(sta)) 792 goto drop; 793 } 794 } 795 796 iwl_mvm_tx_skb(mvm, skb, sta); 797 return; 798 drop: 799 ieee80211_free_txskb(hw, skb); 800 } 801 802 void iwl_mvm_mac_itxq_xmit(struct ieee80211_hw *hw, struct ieee80211_txq *txq) 803 { 804 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 805 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq); 806 struct sk_buff *skb = NULL; 807 808 /* 809 * No need for threads to be pending here, they can leave the first 810 * taker all the work. 811 * 812 * mvmtxq->tx_request logic: 813 * 814 * If 0, no one is currently TXing, set to 1 to indicate current thread 815 * will now start TX and other threads should quit. 816 * 817 * If 1, another thread is currently TXing, set to 2 to indicate to 818 * that thread that there was another request. Since that request may 819 * have raced with the check whether the queue is empty, the TXing 820 * thread should check the queue's status one more time before leaving. 821 * This check is done in order to not leave any TX hanging in the queue 822 * until the next TX invocation (which may not even happen). 823 * 824 * If 2, another thread is currently TXing, and it will already double 825 * check the queue, so do nothing. 826 */ 827 if (atomic_fetch_add_unless(&mvmtxq->tx_request, 1, 2)) 828 return; 829 830 rcu_read_lock(); 831 do { 832 while (likely(!mvmtxq->stopped && 833 !test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status))) { 834 skb = ieee80211_tx_dequeue(hw, txq); 835 836 if (!skb) { 837 if (txq->sta) 838 IWL_DEBUG_TX(mvm, 839 "TXQ of sta %pM tid %d is now empty\n", 840 txq->sta->addr, 841 txq->tid); 842 break; 843 } 844 845 iwl_mvm_tx_skb(mvm, skb, txq->sta); 846 } 847 } while (atomic_dec_return(&mvmtxq->tx_request)); 848 rcu_read_unlock(); 849 } 850 851 static void iwl_mvm_mac_wake_tx_queue(struct ieee80211_hw *hw, 852 struct ieee80211_txq *txq) 853 { 854 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 855 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq); 856 857 /* 858 * Please note that racing is handled very carefully here: 859 * mvmtxq->txq_id is updated during allocation, and mvmtxq->list is 860 * deleted afterwards. 861 * This means that if: 862 * mvmtxq->txq_id != INVALID_QUEUE && list_empty(&mvmtxq->list): 863 * queue is allocated and we can TX. 864 * mvmtxq->txq_id != INVALID_QUEUE && !list_empty(&mvmtxq->list): 865 * a race, should defer the frame. 866 * mvmtxq->txq_id == INVALID_QUEUE && list_empty(&mvmtxq->list): 867 * need to allocate the queue and defer the frame. 868 * mvmtxq->txq_id == INVALID_QUEUE && !list_empty(&mvmtxq->list): 869 * queue is already scheduled for allocation, no need to allocate, 870 * should defer the frame. 871 */ 872 873 /* If the queue is allocated TX and return. */ 874 if (!txq->sta || mvmtxq->txq_id != IWL_MVM_INVALID_QUEUE) { 875 /* 876 * Check that list is empty to avoid a race where txq_id is 877 * already updated, but the queue allocation work wasn't 878 * finished 879 */ 880 if (unlikely(txq->sta && !list_empty(&mvmtxq->list))) 881 return; 882 883 iwl_mvm_mac_itxq_xmit(hw, txq); 884 return; 885 } 886 887 /* The list is being deleted only after the queue is fully allocated. */ 888 if (!list_empty(&mvmtxq->list)) 889 return; 890 891 list_add_tail(&mvmtxq->list, &mvm->add_stream_txqs); 892 schedule_work(&mvm->add_stream_wk); 893 } 894 895 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \ 896 do { \ 897 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \ 898 break; \ 899 iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt); \ 900 } while (0) 901 902 static void 903 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 904 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn, 905 enum ieee80211_ampdu_mlme_action action) 906 { 907 struct iwl_fw_dbg_trigger_tlv *trig; 908 struct iwl_fw_dbg_trigger_ba *ba_trig; 909 910 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 911 FW_DBG_TRIGGER_BA); 912 if (!trig) 913 return; 914 915 ba_trig = (void *)trig->data; 916 917 switch (action) { 918 case IEEE80211_AMPDU_TX_OPERATIONAL: { 919 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 920 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 921 922 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid, 923 "TX AGG START: MAC %pM tid %d ssn %d\n", 924 sta->addr, tid, tid_data->ssn); 925 break; 926 } 927 case IEEE80211_AMPDU_TX_STOP_CONT: 928 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid, 929 "TX AGG STOP: MAC %pM tid %d\n", 930 sta->addr, tid); 931 break; 932 case IEEE80211_AMPDU_RX_START: 933 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid, 934 "RX AGG START: MAC %pM tid %d ssn %d\n", 935 sta->addr, tid, rx_ba_ssn); 936 break; 937 case IEEE80211_AMPDU_RX_STOP: 938 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid, 939 "RX AGG STOP: MAC %pM tid %d\n", 940 sta->addr, tid); 941 break; 942 default: 943 break; 944 } 945 } 946 947 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw, 948 struct ieee80211_vif *vif, 949 struct ieee80211_ampdu_params *params) 950 { 951 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 952 int ret; 953 struct ieee80211_sta *sta = params->sta; 954 enum ieee80211_ampdu_mlme_action action = params->action; 955 u16 tid = params->tid; 956 u16 *ssn = ¶ms->ssn; 957 u16 buf_size = params->buf_size; 958 bool amsdu = params->amsdu; 959 u16 timeout = params->timeout; 960 961 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n", 962 sta->addr, tid, action); 963 964 if (!(mvm->nvm_data->sku_cap_11n_enable)) 965 return -EACCES; 966 967 mutex_lock(&mvm->mutex); 968 969 switch (action) { 970 case IEEE80211_AMPDU_RX_START: 971 if (iwl_mvm_vif_from_mac80211(vif)->ap_sta_id == 972 iwl_mvm_sta_from_mac80211(sta)->sta_id) { 973 struct iwl_mvm_vif *mvmvif; 974 u16 macid = iwl_mvm_vif_from_mac80211(vif)->id; 975 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid]; 976 977 mdata->opened_rx_ba_sessions = true; 978 mvmvif = iwl_mvm_vif_from_mac80211(vif); 979 cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk); 980 } 981 if (!iwl_enable_rx_ampdu()) { 982 ret = -EINVAL; 983 break; 984 } 985 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size, 986 timeout); 987 break; 988 case IEEE80211_AMPDU_RX_STOP: 989 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size, 990 timeout); 991 break; 992 case IEEE80211_AMPDU_TX_START: 993 if (!iwl_enable_tx_ampdu()) { 994 ret = -EINVAL; 995 break; 996 } 997 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn); 998 break; 999 case IEEE80211_AMPDU_TX_STOP_CONT: 1000 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid); 1001 break; 1002 case IEEE80211_AMPDU_TX_STOP_FLUSH: 1003 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 1004 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid); 1005 break; 1006 case IEEE80211_AMPDU_TX_OPERATIONAL: 1007 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, 1008 buf_size, amsdu); 1009 break; 1010 default: 1011 WARN_ON_ONCE(1); 1012 ret = -EINVAL; 1013 break; 1014 } 1015 1016 if (!ret) { 1017 u16 rx_ba_ssn = 0; 1018 1019 if (action == IEEE80211_AMPDU_RX_START) 1020 rx_ba_ssn = *ssn; 1021 1022 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid, 1023 rx_ba_ssn, action); 1024 } 1025 mutex_unlock(&mvm->mutex); 1026 1027 return ret; 1028 } 1029 1030 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac, 1031 struct ieee80211_vif *vif) 1032 { 1033 struct iwl_mvm *mvm = data; 1034 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1035 1036 mvmvif->uploaded = false; 1037 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1038 1039 spin_lock_bh(&mvm->time_event_lock); 1040 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data); 1041 spin_unlock_bh(&mvm->time_event_lock); 1042 1043 mvmvif->phy_ctxt = NULL; 1044 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data)); 1045 memset(&mvmvif->probe_resp_data, 0, sizeof(mvmvif->probe_resp_data)); 1046 } 1047 1048 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) 1049 { 1050 iwl_mvm_stop_device(mvm); 1051 1052 mvm->cur_aid = 0; 1053 1054 mvm->scan_status = 0; 1055 mvm->ps_disabled = false; 1056 mvm->rfkill_safe_init_done = false; 1057 1058 /* just in case one was running */ 1059 iwl_mvm_cleanup_roc_te(mvm); 1060 ieee80211_remain_on_channel_expired(mvm->hw); 1061 1062 iwl_mvm_ftm_restart(mvm); 1063 1064 /* 1065 * cleanup all interfaces, even inactive ones, as some might have 1066 * gone down during the HW restart 1067 */ 1068 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm); 1069 1070 mvm->p2p_device_vif = NULL; 1071 1072 iwl_mvm_reset_phy_ctxts(mvm); 1073 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 1074 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif)); 1075 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd)); 1076 1077 ieee80211_wake_queues(mvm->hw); 1078 1079 mvm->vif_count = 0; 1080 mvm->rx_ba_sessions = 0; 1081 mvm->fwrt.dump.conf = FW_DBG_INVALID; 1082 mvm->monitor_on = false; 1083 1084 /* keep statistics ticking */ 1085 iwl_mvm_accu_radio_stats(mvm); 1086 } 1087 1088 int __iwl_mvm_mac_start(struct iwl_mvm *mvm) 1089 { 1090 int ret; 1091 1092 lockdep_assert_held(&mvm->mutex); 1093 1094 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) { 1095 /* 1096 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART 1097 * so later code will - from now on - see that we're doing it. 1098 */ 1099 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1100 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 1101 /* Clean up some internal and mac80211 state on restart */ 1102 iwl_mvm_restart_cleanup(mvm); 1103 } 1104 ret = iwl_mvm_up(mvm); 1105 1106 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_POST_INIT, 1107 NULL); 1108 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_PERIODIC, 1109 NULL); 1110 1111 mvm->last_reset_or_resume_time_jiffies = jiffies; 1112 1113 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1114 /* Something went wrong - we need to finish some cleanup 1115 * that normally iwl_mvm_mac_restart_complete() below 1116 * would do. 1117 */ 1118 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1119 } 1120 1121 return ret; 1122 } 1123 1124 static int iwl_mvm_mac_start(struct ieee80211_hw *hw) 1125 { 1126 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1127 int ret; 1128 1129 mutex_lock(&mvm->mutex); 1130 ret = __iwl_mvm_mac_start(mvm); 1131 mutex_unlock(&mvm->mutex); 1132 1133 return ret; 1134 } 1135 1136 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm) 1137 { 1138 int ret; 1139 1140 mutex_lock(&mvm->mutex); 1141 1142 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1143 1144 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1145 if (ret) 1146 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n", 1147 ret); 1148 1149 iwl_mvm_send_recovery_cmd(mvm, ERROR_RECOVERY_END_OF_RECOVERY); 1150 1151 /* 1152 * If we have TDLS peers, remove them. We don't know the last seqno/PN 1153 * of packets the FW sent out, so we must reconnect. 1154 */ 1155 iwl_mvm_teardown_tdls_peers(mvm); 1156 1157 mutex_unlock(&mvm->mutex); 1158 } 1159 1160 static void 1161 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw, 1162 enum ieee80211_reconfig_type reconfig_type) 1163 { 1164 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1165 1166 switch (reconfig_type) { 1167 case IEEE80211_RECONFIG_TYPE_RESTART: 1168 iwl_mvm_restart_complete(mvm); 1169 break; 1170 case IEEE80211_RECONFIG_TYPE_SUSPEND: 1171 break; 1172 } 1173 } 1174 1175 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm) 1176 { 1177 lockdep_assert_held(&mvm->mutex); 1178 1179 iwl_mvm_ftm_initiator_smooth_stop(mvm); 1180 1181 /* firmware counters are obviously reset now, but we shouldn't 1182 * partially track so also clear the fw_reset_accu counters. 1183 */ 1184 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats)); 1185 1186 /* async_handlers_wk is now blocked */ 1187 1188 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, ADD_STA, 0) < 12) 1189 iwl_mvm_rm_aux_sta(mvm); 1190 1191 iwl_mvm_stop_device(mvm); 1192 1193 iwl_mvm_async_handlers_purge(mvm); 1194 /* async_handlers_list is empty and will stay empty: HW is stopped */ 1195 1196 /* 1197 * Clear IN_HW_RESTART and HW_RESTART_REQUESTED flag when stopping the 1198 * hw (as restart_complete() won't be called in this case) and mac80211 1199 * won't execute the restart. 1200 * But make sure to cleanup interfaces that have gone down before/during 1201 * HW restart was requested. 1202 */ 1203 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 1204 test_and_clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 1205 &mvm->status)) 1206 ieee80211_iterate_interfaces(mvm->hw, 0, 1207 iwl_mvm_cleanup_iterator, mvm); 1208 1209 /* We shouldn't have any UIDs still set. Loop over all the UIDs to 1210 * make sure there's nothing left there and warn if any is found. 1211 */ 1212 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 1213 int i; 1214 1215 for (i = 0; i < mvm->max_scans; i++) { 1216 if (WARN_ONCE(mvm->scan_uid_status[i], 1217 "UMAC scan UID %d status was not cleaned\n", 1218 i)) 1219 mvm->scan_uid_status[i] = 0; 1220 } 1221 } 1222 } 1223 1224 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw) 1225 { 1226 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1227 1228 flush_work(&mvm->async_handlers_wk); 1229 flush_work(&mvm->add_stream_wk); 1230 1231 /* 1232 * Lock and clear the firmware running bit here already, so that 1233 * new commands coming in elsewhere, e.g. from debugfs, will not 1234 * be able to proceed. This is important here because one of those 1235 * debugfs files causes the firmware dump to be triggered, and if we 1236 * don't stop debugfs accesses before canceling that it could be 1237 * retriggered after we flush it but before we've cleared the bit. 1238 */ 1239 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status); 1240 1241 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork); 1242 cancel_delayed_work_sync(&mvm->scan_timeout_dwork); 1243 1244 /* 1245 * The work item could be running or queued if the 1246 * ROC time event stops just as we get here. 1247 */ 1248 flush_work(&mvm->roc_done_wk); 1249 1250 mutex_lock(&mvm->mutex); 1251 __iwl_mvm_mac_stop(mvm); 1252 mutex_unlock(&mvm->mutex); 1253 1254 /* 1255 * The worker might have been waiting for the mutex, let it run and 1256 * discover that its list is now empty. 1257 */ 1258 cancel_work_sync(&mvm->async_handlers_wk); 1259 } 1260 1261 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm) 1262 { 1263 u16 i; 1264 1265 lockdep_assert_held(&mvm->mutex); 1266 1267 for (i = 0; i < NUM_PHY_CTX; i++) 1268 if (!mvm->phy_ctxts[i].ref) 1269 return &mvm->phy_ctxts[i]; 1270 1271 IWL_ERR(mvm, "No available PHY context\n"); 1272 return NULL; 1273 } 1274 1275 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1276 s16 tx_power) 1277 { 1278 int len; 1279 struct iwl_dev_tx_power_cmd cmd = { 1280 .common.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC), 1281 .common.mac_context_id = 1282 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id), 1283 .common.pwr_restriction = cpu_to_le16(8 * tx_power), 1284 }; 1285 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 1286 REDUCE_TX_POWER_CMD, 1287 IWL_FW_CMD_VER_UNKNOWN); 1288 1289 if (tx_power == IWL_DEFAULT_MAX_TX_POWER) 1290 cmd.common.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER); 1291 1292 if (cmd_ver == 6) 1293 len = sizeof(cmd.v6); 1294 else if (fw_has_api(&mvm->fw->ucode_capa, 1295 IWL_UCODE_TLV_API_REDUCE_TX_POWER)) 1296 len = sizeof(cmd.v5); 1297 else if (fw_has_capa(&mvm->fw->ucode_capa, 1298 IWL_UCODE_TLV_CAPA_TX_POWER_ACK)) 1299 len = sizeof(cmd.v4); 1300 else 1301 len = sizeof(cmd.v3); 1302 1303 /* all structs have the same common part, add it */ 1304 len += sizeof(cmd.common); 1305 1306 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd); 1307 } 1308 1309 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw, 1310 struct ieee80211_vif *vif) 1311 { 1312 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1313 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1314 int ret; 1315 1316 mutex_lock(&mvm->mutex); 1317 1318 if (vif->type == NL80211_IFTYPE_STATION) { 1319 struct iwl_mvm_sta *mvmsta; 1320 1321 mvmvif->csa_bcn_pending = false; 1322 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, 1323 mvmvif->ap_sta_id); 1324 1325 if (WARN_ON(!mvmsta)) { 1326 ret = -EIO; 1327 goto out_unlock; 1328 } 1329 1330 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false); 1331 1332 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1333 1334 if (!fw_has_capa(&mvm->fw->ucode_capa, 1335 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { 1336 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 1337 if (ret) 1338 goto out_unlock; 1339 1340 iwl_mvm_stop_session_protection(mvm, vif); 1341 } 1342 } 1343 1344 mvmvif->ps_disabled = false; 1345 1346 ret = iwl_mvm_power_update_ps(mvm); 1347 1348 out_unlock: 1349 if (mvmvif->csa_failed) 1350 ret = -EIO; 1351 mutex_unlock(&mvm->mutex); 1352 1353 return ret; 1354 } 1355 1356 static void iwl_mvm_abort_channel_switch(struct ieee80211_hw *hw, 1357 struct ieee80211_vif *vif) 1358 { 1359 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1360 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1361 struct iwl_chan_switch_te_cmd cmd = { 1362 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 1363 mvmvif->color)), 1364 .action = cpu_to_le32(FW_CTXT_ACTION_REMOVE), 1365 }; 1366 1367 IWL_DEBUG_MAC80211(mvm, "Abort CSA on mac %d\n", mvmvif->id); 1368 1369 mutex_lock(&mvm->mutex); 1370 if (!fw_has_capa(&mvm->fw->ucode_capa, 1371 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) 1372 iwl_mvm_remove_csa_period(mvm, vif); 1373 else 1374 WARN_ON(iwl_mvm_send_cmd_pdu(mvm, 1375 WIDE_ID(MAC_CONF_GROUP, 1376 CHANNEL_SWITCH_TIME_EVENT_CMD), 1377 0, sizeof(cmd), &cmd)); 1378 mvmvif->csa_failed = true; 1379 mutex_unlock(&mvm->mutex); 1380 1381 iwl_mvm_post_channel_switch(hw, vif); 1382 } 1383 1384 static void iwl_mvm_channel_switch_disconnect_wk(struct work_struct *wk) 1385 { 1386 struct iwl_mvm_vif *mvmvif; 1387 struct ieee80211_vif *vif; 1388 1389 mvmvif = container_of(wk, struct iwl_mvm_vif, csa_work.work); 1390 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 1391 1392 /* Trigger disconnect (should clear the CSA state) */ 1393 ieee80211_chswitch_done(vif, false); 1394 } 1395 1396 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, 1397 struct ieee80211_vif *vif) 1398 { 1399 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1400 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1401 int ret; 1402 1403 mvmvif->mvm = mvm; 1404 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); 1405 1406 /* 1407 * Not much to do here. The stack will not allow interface 1408 * types or combinations that we didn't advertise, so we 1409 * don't really have to check the types. 1410 */ 1411 1412 mutex_lock(&mvm->mutex); 1413 1414 /* make sure that beacon statistics don't go backwards with FW reset */ 1415 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1416 mvmvif->beacon_stats.accu_num_beacons += 1417 mvmvif->beacon_stats.num_beacons; 1418 1419 /* Allocate resources for the MAC context, and add it to the fw */ 1420 ret = iwl_mvm_mac_ctxt_init(mvm, vif); 1421 if (ret) 1422 goto out_unlock; 1423 1424 rcu_assign_pointer(mvm->vif_id_to_mac[mvmvif->id], vif); 1425 1426 /* Counting number of interfaces is needed for legacy PM */ 1427 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1428 mvm->vif_count++; 1429 1430 /* 1431 * The AP binding flow can be done only after the beacon 1432 * template is configured (which happens only in the mac80211 1433 * start_ap() flow), and adding the broadcast station can happen 1434 * only after the binding. 1435 * In addition, since modifying the MAC before adding a bcast 1436 * station is not allowed by the FW, delay the adding of MAC context to 1437 * the point where we can also add the bcast station. 1438 * In short: there's not much we can do at this point, other than 1439 * allocating resources :) 1440 */ 1441 if (vif->type == NL80211_IFTYPE_AP || 1442 vif->type == NL80211_IFTYPE_ADHOC) { 1443 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 1444 if (ret) { 1445 IWL_ERR(mvm, "Failed to allocate bcast sta\n"); 1446 goto out_release; 1447 } 1448 1449 /* 1450 * Only queue for this station is the mcast queue, 1451 * which shouldn't be in TFD mask anyway 1452 */ 1453 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta, 1454 0, vif->type, 1455 IWL_STA_MULTICAST); 1456 if (ret) 1457 goto out_release; 1458 1459 iwl_mvm_vif_dbgfs_register(mvm, vif); 1460 goto out_unlock; 1461 } 1462 1463 mvmvif->features |= hw->netdev_features; 1464 1465 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 1466 if (ret) 1467 goto out_release; 1468 1469 ret = iwl_mvm_power_update_mac(mvm); 1470 if (ret) 1471 goto out_remove_mac; 1472 1473 /* beacon filtering */ 1474 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 1475 if (ret) 1476 goto out_remove_mac; 1477 1478 if (!mvm->bf_allowed_vif && 1479 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) { 1480 mvm->bf_allowed_vif = mvmvif; 1481 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 1482 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 1483 } 1484 1485 /* 1486 * P2P_DEVICE interface does not have a channel context assigned to it, 1487 * so a dedicated PHY context is allocated to it and the corresponding 1488 * MAC context is bound to it at this stage. 1489 */ 1490 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1491 1492 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 1493 if (!mvmvif->phy_ctxt) { 1494 ret = -ENOSPC; 1495 goto out_free_bf; 1496 } 1497 1498 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 1499 ret = iwl_mvm_binding_add_vif(mvm, vif); 1500 if (ret) 1501 goto out_unref_phy; 1502 1503 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif); 1504 if (ret) 1505 goto out_unbind; 1506 1507 /* Save a pointer to p2p device vif, so it can later be used to 1508 * update the p2p device MAC when a GO is started/stopped */ 1509 mvm->p2p_device_vif = vif; 1510 } 1511 1512 iwl_mvm_tcm_add_vif(mvm, vif); 1513 INIT_DELAYED_WORK(&mvmvif->csa_work, 1514 iwl_mvm_channel_switch_disconnect_wk); 1515 1516 if (vif->type == NL80211_IFTYPE_MONITOR) 1517 mvm->monitor_on = true; 1518 1519 iwl_mvm_vif_dbgfs_register(mvm, vif); 1520 goto out_unlock; 1521 1522 out_unbind: 1523 iwl_mvm_binding_remove_vif(mvm, vif); 1524 out_unref_phy: 1525 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1526 out_free_bf: 1527 if (mvm->bf_allowed_vif == mvmvif) { 1528 mvm->bf_allowed_vif = NULL; 1529 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1530 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1531 } 1532 out_remove_mac: 1533 mvmvif->phy_ctxt = NULL; 1534 iwl_mvm_mac_ctxt_remove(mvm, vif); 1535 out_release: 1536 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1537 mvm->vif_count--; 1538 out_unlock: 1539 mutex_unlock(&mvm->mutex); 1540 1541 return ret; 1542 } 1543 1544 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm, 1545 struct ieee80211_vif *vif) 1546 { 1547 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1548 /* 1549 * Flush the ROC worker which will flush the OFFCHANNEL queue. 1550 * We assume here that all the packets sent to the OFFCHANNEL 1551 * queue are sent in ROC session. 1552 */ 1553 flush_work(&mvm->roc_done_wk); 1554 } 1555 } 1556 1557 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, 1558 struct ieee80211_vif *vif) 1559 { 1560 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1561 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1562 struct iwl_probe_resp_data *probe_data; 1563 1564 iwl_mvm_prepare_mac_removal(mvm, vif); 1565 1566 if (!(vif->type == NL80211_IFTYPE_AP || 1567 vif->type == NL80211_IFTYPE_ADHOC)) 1568 iwl_mvm_tcm_rm_vif(mvm, vif); 1569 1570 mutex_lock(&mvm->mutex); 1571 1572 probe_data = rcu_dereference_protected(mvmvif->probe_resp_data, 1573 lockdep_is_held(&mvm->mutex)); 1574 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); 1575 if (probe_data) 1576 kfree_rcu(probe_data, rcu_head); 1577 1578 if (mvm->bf_allowed_vif == mvmvif) { 1579 mvm->bf_allowed_vif = NULL; 1580 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1581 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1582 } 1583 1584 if (vif->bss_conf.ftm_responder) 1585 memset(&mvm->ftm_resp_stats, 0, sizeof(mvm->ftm_resp_stats)); 1586 1587 iwl_mvm_vif_dbgfs_clean(mvm, vif); 1588 1589 /* 1590 * For AP/GO interface, the tear down of the resources allocated to the 1591 * interface is be handled as part of the stop_ap flow. 1592 */ 1593 if (vif->type == NL80211_IFTYPE_AP || 1594 vif->type == NL80211_IFTYPE_ADHOC) { 1595 #ifdef CONFIG_NL80211_TESTMODE 1596 if (vif == mvm->noa_vif) { 1597 mvm->noa_vif = NULL; 1598 mvm->noa_duration = 0; 1599 } 1600 #endif 1601 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta); 1602 iwl_mvm_dealloc_bcast_sta(mvm, vif); 1603 goto out_release; 1604 } 1605 1606 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1607 mvm->p2p_device_vif = NULL; 1608 iwl_mvm_rm_p2p_bcast_sta(mvm, vif); 1609 iwl_mvm_binding_remove_vif(mvm, vif); 1610 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1611 mvmvif->phy_ctxt = NULL; 1612 } 1613 1614 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE) 1615 mvm->vif_count--; 1616 1617 iwl_mvm_power_update_mac(mvm); 1618 iwl_mvm_mac_ctxt_remove(mvm, vif); 1619 1620 RCU_INIT_POINTER(mvm->vif_id_to_mac[mvmvif->id], NULL); 1621 1622 if (vif->type == NL80211_IFTYPE_MONITOR) 1623 mvm->monitor_on = false; 1624 1625 out_release: 1626 mutex_unlock(&mvm->mutex); 1627 } 1628 1629 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed) 1630 { 1631 return 0; 1632 } 1633 1634 struct iwl_mvm_mc_iter_data { 1635 struct iwl_mvm *mvm; 1636 int port_id; 1637 }; 1638 1639 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac, 1640 struct ieee80211_vif *vif) 1641 { 1642 struct iwl_mvm_mc_iter_data *data = _data; 1643 struct iwl_mvm *mvm = data->mvm; 1644 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd; 1645 struct iwl_host_cmd hcmd = { 1646 .id = MCAST_FILTER_CMD, 1647 .flags = CMD_ASYNC, 1648 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1649 }; 1650 int ret, len; 1651 1652 /* if we don't have free ports, mcast frames will be dropped */ 1653 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM)) 1654 return; 1655 1656 if (vif->type != NL80211_IFTYPE_STATION || 1657 !vif->bss_conf.assoc) 1658 return; 1659 1660 cmd->port_id = data->port_id++; 1661 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 1662 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4); 1663 1664 hcmd.len[0] = len; 1665 hcmd.data[0] = cmd; 1666 1667 ret = iwl_mvm_send_cmd(mvm, &hcmd); 1668 if (ret) 1669 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret); 1670 } 1671 1672 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm) 1673 { 1674 struct iwl_mvm_mc_iter_data iter_data = { 1675 .mvm = mvm, 1676 }; 1677 1678 lockdep_assert_held(&mvm->mutex); 1679 1680 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd)) 1681 return; 1682 1683 ieee80211_iterate_active_interfaces_atomic( 1684 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1685 iwl_mvm_mc_iface_iterator, &iter_data); 1686 } 1687 1688 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw, 1689 struct netdev_hw_addr_list *mc_list) 1690 { 1691 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1692 struct iwl_mcast_filter_cmd *cmd; 1693 struct netdev_hw_addr *addr; 1694 int addr_count; 1695 bool pass_all; 1696 int len; 1697 1698 addr_count = netdev_hw_addr_list_count(mc_list); 1699 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES || 1700 IWL_MVM_FW_MCAST_FILTER_PASS_ALL; 1701 if (pass_all) 1702 addr_count = 0; 1703 1704 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4); 1705 cmd = kzalloc(len, GFP_ATOMIC); 1706 if (!cmd) 1707 return 0; 1708 1709 if (pass_all) { 1710 cmd->pass_all = 1; 1711 return (u64)(uintptr_t)cmd; 1712 } 1713 1714 netdev_hw_addr_list_for_each(addr, mc_list) { 1715 #if defined(__linux__) 1716 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n", 1717 cmd->count, addr->addr); 1718 #elif defined(__FreeBSD__) 1719 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %6D\n", 1720 cmd->count, addr->addr, ":"); 1721 #endif 1722 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN], 1723 addr->addr, ETH_ALEN); 1724 cmd->count++; 1725 } 1726 1727 return (u64)(uintptr_t)cmd; 1728 } 1729 1730 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw, 1731 unsigned int changed_flags, 1732 unsigned int *total_flags, 1733 u64 multicast) 1734 { 1735 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1736 struct iwl_mcast_filter_cmd *cmd = (void *)(uintptr_t)multicast; 1737 1738 mutex_lock(&mvm->mutex); 1739 1740 /* replace previous configuration */ 1741 kfree(mvm->mcast_filter_cmd); 1742 mvm->mcast_filter_cmd = cmd; 1743 1744 if (!cmd) 1745 goto out; 1746 1747 if (changed_flags & FIF_ALLMULTI) 1748 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI); 1749 1750 if (cmd->pass_all) 1751 cmd->count = 0; 1752 1753 iwl_mvm_recalc_multicast(mvm); 1754 out: 1755 mutex_unlock(&mvm->mutex); 1756 *total_flags = 0; 1757 } 1758 1759 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw, 1760 struct ieee80211_vif *vif, 1761 unsigned int filter_flags, 1762 unsigned int changed_flags) 1763 { 1764 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1765 1766 /* We support only filter for probe requests */ 1767 if (!(changed_flags & FIF_PROBE_REQ)) 1768 return; 1769 1770 /* Supported only for p2p client interfaces */ 1771 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1772 !vif->p2p) 1773 return; 1774 1775 mutex_lock(&mvm->mutex); 1776 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1777 mutex_unlock(&mvm->mutex); 1778 } 1779 1780 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 1781 struct iwl_bcast_iter_data { 1782 struct iwl_mvm *mvm; 1783 struct iwl_bcast_filter_cmd *cmd; 1784 u8 current_filter; 1785 }; 1786 1787 static void 1788 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif, 1789 const struct iwl_fw_bcast_filter *in_filter, 1790 struct iwl_fw_bcast_filter *out_filter) 1791 { 1792 struct iwl_fw_bcast_filter_attr *attr; 1793 int i; 1794 1795 memcpy(out_filter, in_filter, sizeof(*out_filter)); 1796 1797 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) { 1798 attr = &out_filter->attrs[i]; 1799 1800 if (!attr->mask) 1801 break; 1802 1803 switch (attr->reserved1) { 1804 case cpu_to_le16(BC_FILTER_MAGIC_IP): 1805 if (vif->bss_conf.arp_addr_cnt != 1) { 1806 attr->mask = 0; 1807 continue; 1808 } 1809 1810 attr->val = vif->bss_conf.arp_addr_list[0]; 1811 break; 1812 case cpu_to_le16(BC_FILTER_MAGIC_MAC): 1813 attr->val = *(__be32 *)&vif->addr[2]; 1814 break; 1815 default: 1816 break; 1817 } 1818 attr->reserved1 = 0; 1819 out_filter->num_attrs++; 1820 } 1821 } 1822 1823 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac, 1824 struct ieee80211_vif *vif) 1825 { 1826 struct iwl_bcast_iter_data *data = _data; 1827 struct iwl_mvm *mvm = data->mvm; 1828 struct iwl_bcast_filter_cmd *cmd = data->cmd; 1829 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1830 struct iwl_fw_bcast_mac *bcast_mac; 1831 int i; 1832 1833 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs))) 1834 return; 1835 1836 bcast_mac = &cmd->macs[mvmvif->id]; 1837 1838 /* 1839 * enable filtering only for associated stations, but not for P2P 1840 * Clients 1841 */ 1842 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p || 1843 !vif->bss_conf.assoc) 1844 return; 1845 1846 bcast_mac->default_discard = 1; 1847 1848 /* copy all configured filters */ 1849 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) { 1850 /* 1851 * Make sure we don't exceed our filters limit. 1852 * if there is still a valid filter to be configured, 1853 * be on the safe side and just allow bcast for this mac. 1854 */ 1855 if (WARN_ON_ONCE(data->current_filter >= 1856 ARRAY_SIZE(cmd->filters))) { 1857 bcast_mac->default_discard = 0; 1858 bcast_mac->attached_filters = 0; 1859 break; 1860 } 1861 1862 iwl_mvm_set_bcast_filter(vif, 1863 &mvm->bcast_filters[i], 1864 &cmd->filters[data->current_filter]); 1865 1866 /* skip current filter if it contains no attributes */ 1867 if (!cmd->filters[data->current_filter].num_attrs) 1868 continue; 1869 1870 /* attach the filter to current mac */ 1871 bcast_mac->attached_filters |= 1872 cpu_to_le16(BIT(data->current_filter)); 1873 1874 data->current_filter++; 1875 } 1876 } 1877 1878 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm, 1879 struct iwl_bcast_filter_cmd *cmd) 1880 { 1881 struct iwl_bcast_iter_data iter_data = { 1882 .mvm = mvm, 1883 .cmd = cmd, 1884 }; 1885 1886 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL) 1887 return false; 1888 1889 memset(cmd, 0, sizeof(*cmd)); 1890 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters); 1891 cmd->max_macs = ARRAY_SIZE(cmd->macs); 1892 1893 #ifdef CONFIG_IWLWIFI_DEBUGFS 1894 /* use debugfs filters/macs if override is configured */ 1895 if (mvm->dbgfs_bcast_filtering.override) { 1896 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters, 1897 sizeof(cmd->filters)); 1898 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs, 1899 sizeof(cmd->macs)); 1900 return true; 1901 } 1902 #endif 1903 1904 /* if no filters are configured, do nothing */ 1905 if (!mvm->bcast_filters) 1906 return false; 1907 1908 /* configure and attach these filters for each associated sta vif */ 1909 ieee80211_iterate_active_interfaces( 1910 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1911 iwl_mvm_bcast_filter_iterator, &iter_data); 1912 1913 return true; 1914 } 1915 1916 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1917 { 1918 struct iwl_bcast_filter_cmd cmd; 1919 1920 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING)) 1921 return 0; 1922 1923 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) 1924 return 0; 1925 1926 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0, 1927 sizeof(cmd), &cmd); 1928 } 1929 #else 1930 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1931 { 1932 return 0; 1933 } 1934 #endif 1935 1936 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm, 1937 struct ieee80211_vif *vif) 1938 { 1939 struct iwl_mu_group_mgmt_cmd cmd = {}; 1940 1941 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership, 1942 WLAN_MEMBERSHIP_LEN); 1943 memcpy(cmd.user_position, vif->bss_conf.mu_group.position, 1944 WLAN_USER_POSITION_LEN); 1945 1946 return iwl_mvm_send_cmd_pdu(mvm, 1947 WIDE_ID(DATA_PATH_GROUP, 1948 UPDATE_MU_GROUPS_CMD), 1949 0, sizeof(cmd), &cmd); 1950 } 1951 1952 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac, 1953 struct ieee80211_vif *vif) 1954 { 1955 if (vif->mu_mimo_owner) { 1956 struct iwl_mu_group_mgmt_notif *notif = _data; 1957 1958 /* 1959 * MU-MIMO Group Id action frame is little endian. We treat 1960 * the data received from firmware as if it came from the 1961 * action frame, so no conversion is needed. 1962 */ 1963 ieee80211_update_mu_groups(vif, 1964 (u8 *)¬if->membership_status, 1965 (u8 *)¬if->user_position); 1966 } 1967 } 1968 1969 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm, 1970 struct iwl_rx_cmd_buffer *rxb) 1971 { 1972 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1973 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data; 1974 1975 ieee80211_iterate_active_interfaces_atomic( 1976 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1977 iwl_mvm_mu_mimo_iface_iterator, notif); 1978 } 1979 1980 static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit) 1981 { 1982 u8 byte_num = ppe_pos_bit / 8; 1983 u8 bit_num = ppe_pos_bit % 8; 1984 u8 residue_bits; 1985 u8 res; 1986 1987 if (bit_num <= 5) 1988 return (ppe[byte_num] >> bit_num) & 1989 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1); 1990 1991 /* 1992 * If bit_num > 5, we have to combine bits with next byte. 1993 * Calculate how many bits we need to take from current byte (called 1994 * here "residue_bits"), and add them to bits from next byte. 1995 */ 1996 1997 residue_bits = 8 - bit_num; 1998 1999 res = (ppe[byte_num + 1] & 2000 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE - residue_bits) - 1)) << 2001 residue_bits; 2002 res += (ppe[byte_num] >> bit_num) & (BIT(residue_bits) - 1); 2003 2004 return res; 2005 } 2006 2007 static void iwl_mvm_cfg_he_sta(struct iwl_mvm *mvm, 2008 struct ieee80211_vif *vif, u8 sta_id) 2009 { 2010 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2011 struct iwl_he_sta_context_cmd sta_ctxt_cmd = { 2012 .sta_id = sta_id, 2013 .tid_limit = IWL_MAX_TID_COUNT, 2014 .bss_color = vif->bss_conf.he_bss_color.color, 2015 .htc_trig_based_pkt_ext = vif->bss_conf.htc_trig_based_pkt_ext, 2016 .frame_time_rts_th = 2017 cpu_to_le16(vif->bss_conf.frame_time_rts_th), 2018 }; 2019 int size = fw_has_api(&mvm->fw->ucode_capa, 2020 IWL_UCODE_TLV_API_MBSSID_HE) ? 2021 sizeof(sta_ctxt_cmd) : 2022 sizeof(struct iwl_he_sta_context_cmd_v1); 2023 struct ieee80211_sta *sta; 2024 u32 flags; 2025 int i; 2026 const struct ieee80211_sta_he_cap *own_he_cap = NULL; 2027 struct ieee80211_chanctx_conf *chanctx_conf; 2028 const struct ieee80211_supported_band *sband; 2029 2030 rcu_read_lock(); 2031 2032 chanctx_conf = rcu_dereference(vif->chanctx_conf); 2033 if (WARN_ON(!chanctx_conf)) { 2034 rcu_read_unlock(); 2035 return; 2036 } 2037 2038 sband = mvm->hw->wiphy->bands[chanctx_conf->def.chan->band]; 2039 own_he_cap = ieee80211_get_he_iftype_cap(sband, 2040 ieee80211_vif_type_p2p(vif)); 2041 2042 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_ctxt_cmd.sta_id]); 2043 if (IS_ERR_OR_NULL(sta)) { 2044 rcu_read_unlock(); 2045 WARN(1, "Can't find STA to configure HE\n"); 2046 return; 2047 } 2048 2049 if (!sta->he_cap.has_he) { 2050 rcu_read_unlock(); 2051 return; 2052 } 2053 2054 flags = 0; 2055 2056 /* Block 26-tone RU OFDMA transmissions */ 2057 if (mvmvif->he_ru_2mhz_block) 2058 flags |= STA_CTXT_HE_RU_2MHZ_BLOCK; 2059 2060 /* HTC flags */ 2061 if (sta->he_cap.he_cap_elem.mac_cap_info[0] & 2062 IEEE80211_HE_MAC_CAP0_HTC_HE) 2063 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_SUPPORT); 2064 if ((sta->he_cap.he_cap_elem.mac_cap_info[1] & 2065 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION) || 2066 (sta->he_cap.he_cap_elem.mac_cap_info[2] & 2067 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION)) { 2068 u8 link_adap = 2069 ((sta->he_cap.he_cap_elem.mac_cap_info[2] & 2070 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION) << 1) + 2071 (sta->he_cap.he_cap_elem.mac_cap_info[1] & 2072 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION); 2073 2074 if (link_adap == 2) 2075 sta_ctxt_cmd.htc_flags |= 2076 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_UNSOLICITED); 2077 else if (link_adap == 3) 2078 sta_ctxt_cmd.htc_flags |= 2079 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_BOTH); 2080 } 2081 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_BSR) 2082 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BSR_SUPP); 2083 if (sta->he_cap.he_cap_elem.mac_cap_info[3] & 2084 IEEE80211_HE_MAC_CAP3_OMI_CONTROL) 2085 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_OMI_SUPP); 2086 if (sta->he_cap.he_cap_elem.mac_cap_info[4] & IEEE80211_HE_MAC_CAP4_BQR) 2087 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BQR_SUPP); 2088 2089 /* 2090 * Initialize the PPE thresholds to "None" (7), as described in Table 2091 * 9-262ac of 80211.ax/D3.0. 2092 */ 2093 memset(&sta_ctxt_cmd.pkt_ext, 7, sizeof(sta_ctxt_cmd.pkt_ext)); 2094 2095 /* If PPE Thresholds exist, parse them into a FW-familiar format. */ 2096 if (sta->he_cap.he_cap_elem.phy_cap_info[6] & 2097 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) { 2098 u8 nss = (sta->he_cap.ppe_thres[0] & 2099 IEEE80211_PPE_THRES_NSS_MASK) + 1; 2100 u8 ru_index_bitmap = 2101 (sta->he_cap.ppe_thres[0] & 2102 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK) >> 2103 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS; 2104 u8 *ppe = &sta->he_cap.ppe_thres[0]; 2105 u8 ppe_pos_bit = 7; /* Starting after PPE header */ 2106 2107 /* 2108 * FW currently supports only nss == MAX_HE_SUPP_NSS 2109 * 2110 * If nss > MAX: we can ignore values we don't support 2111 * If nss < MAX: we can set zeros in other streams 2112 */ 2113 if (nss > MAX_HE_SUPP_NSS) { 2114 IWL_INFO(mvm, "Got NSS = %d - trimming to %d\n", nss, 2115 MAX_HE_SUPP_NSS); 2116 nss = MAX_HE_SUPP_NSS; 2117 } 2118 2119 for (i = 0; i < nss; i++) { 2120 u8 ru_index_tmp = ru_index_bitmap << 1; 2121 u8 bw; 2122 2123 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; bw++) { 2124 ru_index_tmp >>= 1; 2125 if (!(ru_index_tmp & 1)) 2126 continue; 2127 2128 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][1] = 2129 iwl_mvm_he_get_ppe_val(ppe, 2130 ppe_pos_bit); 2131 ppe_pos_bit += 2132 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2133 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][0] = 2134 iwl_mvm_he_get_ppe_val(ppe, 2135 ppe_pos_bit); 2136 ppe_pos_bit += 2137 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2138 } 2139 } 2140 2141 flags |= STA_CTXT_HE_PACKET_EXT; 2142 } else if ((sta->he_cap.he_cap_elem.phy_cap_info[9] & 2143 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) != 2144 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_RESERVED) { 2145 int low_th = -1; 2146 int high_th = -1; 2147 2148 /* Take the PPE thresholds from the nominal padding info */ 2149 switch (sta->he_cap.he_cap_elem.phy_cap_info[9] & 2150 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) { 2151 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_0US: 2152 low_th = IWL_HE_PKT_EXT_NONE; 2153 high_th = IWL_HE_PKT_EXT_NONE; 2154 break; 2155 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_8US: 2156 low_th = IWL_HE_PKT_EXT_BPSK; 2157 high_th = IWL_HE_PKT_EXT_NONE; 2158 break; 2159 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_16US: 2160 low_th = IWL_HE_PKT_EXT_NONE; 2161 high_th = IWL_HE_PKT_EXT_BPSK; 2162 break; 2163 } 2164 2165 /* Set the PPE thresholds accordingly */ 2166 if (low_th >= 0 && high_th >= 0) { 2167 struct iwl_he_pkt_ext *pkt_ext = 2168 (struct iwl_he_pkt_ext *)&sta_ctxt_cmd.pkt_ext; 2169 2170 for (i = 0; i < MAX_HE_SUPP_NSS; i++) { 2171 u8 bw; 2172 2173 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; 2174 bw++) { 2175 pkt_ext->pkt_ext_qam_th[i][bw][0] = 2176 low_th; 2177 pkt_ext->pkt_ext_qam_th[i][bw][1] = 2178 high_th; 2179 } 2180 } 2181 2182 flags |= STA_CTXT_HE_PACKET_EXT; 2183 } 2184 } 2185 2186 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & 2187 IEEE80211_HE_MAC_CAP2_32BIT_BA_BITMAP) 2188 flags |= STA_CTXT_HE_32BIT_BA_BITMAP; 2189 2190 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & 2191 IEEE80211_HE_MAC_CAP2_ACK_EN) 2192 flags |= STA_CTXT_HE_ACK_ENABLED; 2193 2194 rcu_read_unlock(); 2195 2196 /* Mark MU EDCA as enabled, unless none detected on some AC */ 2197 flags |= STA_CTXT_HE_MU_EDCA_CW; 2198 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 2199 struct ieee80211_he_mu_edca_param_ac_rec *mu_edca = 2200 &mvmvif->queue_params[i].mu_edca_param_rec; 2201 u8 ac = iwl_mvm_mac80211_ac_to_ucode_ac(i); 2202 2203 if (!mvmvif->queue_params[i].mu_edca) { 2204 flags &= ~STA_CTXT_HE_MU_EDCA_CW; 2205 break; 2206 } 2207 2208 sta_ctxt_cmd.trig_based_txf[ac].cwmin = 2209 cpu_to_le16(mu_edca->ecw_min_max & 0xf); 2210 sta_ctxt_cmd.trig_based_txf[ac].cwmax = 2211 cpu_to_le16((mu_edca->ecw_min_max & 0xf0) >> 4); 2212 sta_ctxt_cmd.trig_based_txf[ac].aifsn = 2213 cpu_to_le16(mu_edca->aifsn); 2214 sta_ctxt_cmd.trig_based_txf[ac].mu_time = 2215 cpu_to_le16(mu_edca->mu_edca_timer); 2216 } 2217 2218 2219 if (vif->bss_conf.uora_exists) { 2220 flags |= STA_CTXT_HE_TRIG_RND_ALLOC; 2221 2222 sta_ctxt_cmd.rand_alloc_ecwmin = 2223 vif->bss_conf.uora_ocw_range & 0x7; 2224 sta_ctxt_cmd.rand_alloc_ecwmax = 2225 (vif->bss_conf.uora_ocw_range >> 3) & 0x7; 2226 } 2227 2228 if (own_he_cap && !(own_he_cap->he_cap_elem.mac_cap_info[2] & 2229 IEEE80211_HE_MAC_CAP2_ACK_EN)) 2230 flags |= STA_CTXT_HE_NIC_NOT_ACK_ENABLED; 2231 2232 if (vif->bss_conf.nontransmitted) { 2233 flags |= STA_CTXT_HE_REF_BSSID_VALID; 2234 ether_addr_copy(sta_ctxt_cmd.ref_bssid_addr, 2235 vif->bss_conf.transmitter_bssid); 2236 sta_ctxt_cmd.max_bssid_indicator = 2237 vif->bss_conf.bssid_indicator; 2238 sta_ctxt_cmd.bssid_index = vif->bss_conf.bssid_index; 2239 sta_ctxt_cmd.ema_ap = vif->bss_conf.ema_ap; 2240 sta_ctxt_cmd.profile_periodicity = 2241 vif->bss_conf.profile_periodicity; 2242 } 2243 2244 sta_ctxt_cmd.flags = cpu_to_le32(flags); 2245 2246 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(STA_HE_CTXT_CMD, 2247 DATA_PATH_GROUP, 0), 2248 0, size, &sta_ctxt_cmd)) 2249 IWL_ERR(mvm, "Failed to config FW to work HE!\n"); 2250 } 2251 2252 static void iwl_mvm_protect_assoc(struct iwl_mvm *mvm, 2253 struct ieee80211_vif *vif, 2254 u32 duration_override) 2255 { 2256 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS; 2257 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS; 2258 2259 if (duration_override > duration) 2260 duration = duration_override; 2261 2262 /* Try really hard to protect the session and hear a beacon 2263 * The new session protection command allows us to protect the 2264 * session for a much longer time since the firmware will internally 2265 * create two events: a 300TU one with a very high priority that 2266 * won't be fragmented which should be enough for 99% of the cases, 2267 * and another one (which we configure here to be 900TU long) which 2268 * will have a slightly lower priority, but more importantly, can be 2269 * fragmented so that it'll allow other activities to run. 2270 */ 2271 if (fw_has_capa(&mvm->fw->ucode_capa, 2272 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) 2273 iwl_mvm_schedule_session_protection(mvm, vif, 900, 2274 min_duration, false); 2275 else 2276 iwl_mvm_protect_session(mvm, vif, duration, 2277 min_duration, 500, false); 2278 } 2279 2280 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, 2281 struct ieee80211_vif *vif, 2282 struct ieee80211_bss_conf *bss_conf, 2283 u32 changes) 2284 { 2285 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2286 int ret; 2287 2288 /* 2289 * Re-calculate the tsf id, as the leader-follower relations depend 2290 * on the beacon interval, which was not known when the station 2291 * interface was added. 2292 */ 2293 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) { 2294 if (vif->bss_conf.he_support && 2295 !iwlwifi_mod_params.disable_11ax) 2296 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id); 2297 2298 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2299 } 2300 2301 /* Update MU EDCA params */ 2302 if (changes & BSS_CHANGED_QOS && mvmvif->associated && 2303 bss_conf->assoc && vif->bss_conf.he_support && 2304 !iwlwifi_mod_params.disable_11ax) 2305 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id); 2306 2307 /* 2308 * If we're not associated yet, take the (new) BSSID before associating 2309 * so the firmware knows. If we're already associated, then use the old 2310 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC 2311 * branch for disassociation below. 2312 */ 2313 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated) 2314 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2315 2316 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid); 2317 if (ret) 2318 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2319 2320 /* after sending it once, adopt mac80211 data */ 2321 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2322 mvmvif->associated = bss_conf->assoc; 2323 2324 if (changes & BSS_CHANGED_ASSOC) { 2325 if (bss_conf->assoc) { 2326 /* clear statistics to get clean beacon counter */ 2327 iwl_mvm_request_statistics(mvm, true); 2328 memset(&mvmvif->beacon_stats, 0, 2329 sizeof(mvmvif->beacon_stats)); 2330 2331 /* add quota for this interface */ 2332 ret = iwl_mvm_update_quotas(mvm, true, NULL); 2333 if (ret) { 2334 IWL_ERR(mvm, "failed to update quotas\n"); 2335 return; 2336 } 2337 2338 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2339 &mvm->status) && 2340 !fw_has_capa(&mvm->fw->ucode_capa, 2341 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) { 2342 /* 2343 * If we're restarting then the firmware will 2344 * obviously have lost synchronisation with 2345 * the AP. It will attempt to synchronise by 2346 * itself, but we can make it more reliable by 2347 * scheduling a session protection time event. 2348 * 2349 * The firmware needs to receive a beacon to 2350 * catch up with synchronisation, use 110% of 2351 * the beacon interval. 2352 * 2353 * Set a large maximum delay to allow for more 2354 * than a single interface. 2355 * 2356 * For new firmware versions, rely on the 2357 * firmware. This is relevant for DCM scenarios 2358 * only anyway. 2359 */ 2360 u32 dur = (11 * vif->bss_conf.beacon_int) / 10; 2361 iwl_mvm_protect_session(mvm, vif, dur, dur, 2362 5 * dur, false); 2363 } else if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2364 &mvm->status) && 2365 !vif->bss_conf.dtim_period) { 2366 /* 2367 * If we're not restarting and still haven't 2368 * heard a beacon (dtim period unknown) then 2369 * make sure we still have enough minimum time 2370 * remaining in the time event, since the auth 2371 * might actually have taken quite a while 2372 * (especially for SAE) and so the remaining 2373 * time could be small without us having heard 2374 * a beacon yet. 2375 */ 2376 iwl_mvm_protect_assoc(mvm, vif, 0); 2377 } 2378 2379 iwl_mvm_sf_update(mvm, vif, false); 2380 iwl_mvm_power_vif_assoc(mvm, vif); 2381 if (vif->p2p) { 2382 iwl_mvm_update_smps(mvm, vif, 2383 IWL_MVM_SMPS_REQ_PROT, 2384 IEEE80211_SMPS_DYNAMIC); 2385 } 2386 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 2387 /* 2388 * If update fails - SF might be running in associated 2389 * mode while disassociated - which is forbidden. 2390 */ 2391 ret = iwl_mvm_sf_update(mvm, vif, false); 2392 WARN_ONCE(ret && 2393 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 2394 &mvm->status), 2395 "Failed to update SF upon disassociation\n"); 2396 2397 /* 2398 * If we get an assert during the connection (after the 2399 * station has been added, but before the vif is set 2400 * to associated), mac80211 will re-add the station and 2401 * then configure the vif. Since the vif is not 2402 * associated, we would remove the station here and 2403 * this would fail the recovery. 2404 */ 2405 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2406 &mvm->status)) { 2407 /* 2408 * Remove AP station now that 2409 * the MAC is unassoc 2410 */ 2411 ret = iwl_mvm_rm_sta_id(mvm, vif, 2412 mvmvif->ap_sta_id); 2413 if (ret) 2414 IWL_ERR(mvm, 2415 "failed to remove AP station\n"); 2416 2417 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 2418 } 2419 2420 /* remove quota for this interface */ 2421 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2422 if (ret) 2423 IWL_ERR(mvm, "failed to update quotas\n"); 2424 2425 /* this will take the cleared BSSID from bss_conf */ 2426 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2427 if (ret) 2428 IWL_ERR(mvm, 2429 "failed to update MAC %pM (clear after unassoc)\n", 2430 vif->addr); 2431 } 2432 2433 /* 2434 * The firmware tracks the MU-MIMO group on its own. 2435 * However, on HW restart we should restore this data. 2436 */ 2437 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2438 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) { 2439 ret = iwl_mvm_update_mu_groups(mvm, vif); 2440 if (ret) 2441 IWL_ERR(mvm, 2442 "failed to update VHT MU_MIMO groups\n"); 2443 } 2444 2445 iwl_mvm_recalc_multicast(mvm); 2446 iwl_mvm_configure_bcast_filter(mvm); 2447 2448 /* reset rssi values */ 2449 mvmvif->bf_data.ave_beacon_signal = 0; 2450 2451 iwl_mvm_bt_coex_vif_change(mvm); 2452 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, 2453 IEEE80211_SMPS_AUTOMATIC); 2454 if (fw_has_capa(&mvm->fw->ucode_capa, 2455 IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2456 iwl_mvm_config_scan(mvm); 2457 } 2458 2459 if (changes & BSS_CHANGED_BEACON_INFO) { 2460 /* 2461 * We received a beacon from the associated AP so 2462 * remove the session protection. 2463 * A firmware with the new API will remove it automatically. 2464 */ 2465 if (!fw_has_capa(&mvm->fw->ucode_capa, 2466 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) 2467 iwl_mvm_stop_session_protection(mvm, vif); 2468 2469 iwl_mvm_sf_update(mvm, vif, false); 2470 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2471 } 2472 2473 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS | 2474 /* 2475 * Send power command on every beacon change, 2476 * because we may have not enabled beacon abort yet. 2477 */ 2478 BSS_CHANGED_BEACON_INFO)) { 2479 ret = iwl_mvm_power_update_mac(mvm); 2480 if (ret) 2481 IWL_ERR(mvm, "failed to update power mode\n"); 2482 } 2483 2484 if (changes & BSS_CHANGED_CQM) { 2485 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n"); 2486 /* reset cqm events tracking */ 2487 mvmvif->bf_data.last_cqm_event = 0; 2488 if (mvmvif->bf_data.bf_enabled) { 2489 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 2490 if (ret) 2491 IWL_ERR(mvm, 2492 "failed to update CQM thresholds\n"); 2493 } 2494 } 2495 2496 if (changes & BSS_CHANGED_ARP_FILTER) { 2497 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n"); 2498 iwl_mvm_configure_bcast_filter(mvm); 2499 } 2500 2501 if (changes & BSS_CHANGED_BANDWIDTH) 2502 iwl_mvm_apply_fw_smps_request(vif); 2503 } 2504 2505 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw, 2506 struct ieee80211_vif *vif) 2507 { 2508 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2509 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2510 int ret, i; 2511 2512 mutex_lock(&mvm->mutex); 2513 2514 /* Send the beacon template */ 2515 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif); 2516 if (ret) 2517 goto out_unlock; 2518 2519 /* 2520 * Re-calculate the tsf id, as the leader-follower relations depend on 2521 * the beacon interval, which was not known when the AP interface 2522 * was added. 2523 */ 2524 if (vif->type == NL80211_IFTYPE_AP) 2525 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2526 2527 mvmvif->ap_assoc_sta_count = 0; 2528 2529 /* Add the mac context */ 2530 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 2531 if (ret) 2532 goto out_unlock; 2533 2534 /* Perform the binding */ 2535 ret = iwl_mvm_binding_add_vif(mvm, vif); 2536 if (ret) 2537 goto out_remove; 2538 2539 /* 2540 * This is not very nice, but the simplest: 2541 * For older FWs adding the mcast sta before the bcast station may 2542 * cause assert 0x2b00. 2543 * This is fixed in later FW so make the order of removal depend on 2544 * the TLV 2545 */ 2546 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2547 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2548 if (ret) 2549 goto out_unbind; 2550 /* 2551 * Send the bcast station. At this stage the TBTT and DTIM time 2552 * events are added and applied to the scheduler 2553 */ 2554 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2555 if (ret) { 2556 iwl_mvm_rm_mcast_sta(mvm, vif); 2557 goto out_unbind; 2558 } 2559 } else { 2560 /* 2561 * Send the bcast station. At this stage the TBTT and DTIM time 2562 * events are added and applied to the scheduler 2563 */ 2564 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2565 if (ret) 2566 goto out_unbind; 2567 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2568 if (ret) { 2569 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2570 goto out_unbind; 2571 } 2572 } 2573 2574 /* must be set before quota calculations */ 2575 mvmvif->ap_ibss_active = true; 2576 2577 /* send all the early keys to the device now */ 2578 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) { 2579 struct ieee80211_key_conf *key = mvmvif->ap_early_keys[i]; 2580 2581 if (!key) 2582 continue; 2583 2584 mvmvif->ap_early_keys[i] = NULL; 2585 2586 ret = __iwl_mvm_mac_set_key(hw, SET_KEY, vif, NULL, key); 2587 if (ret) 2588 goto out_quota_failed; 2589 } 2590 2591 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) { 2592 iwl_mvm_vif_set_low_latency(mvmvif, true, 2593 LOW_LATENCY_VIF_TYPE); 2594 iwl_mvm_send_low_latency_cmd(mvm, true, mvmvif->id); 2595 } 2596 2597 /* power updated needs to be done before quotas */ 2598 iwl_mvm_power_update_mac(mvm); 2599 2600 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2601 if (ret) 2602 goto out_quota_failed; 2603 2604 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2605 if (vif->p2p && mvm->p2p_device_vif) 2606 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2607 2608 iwl_mvm_bt_coex_vif_change(mvm); 2609 2610 /* we don't support TDLS during DCM */ 2611 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2612 iwl_mvm_teardown_tdls_peers(mvm); 2613 2614 iwl_mvm_ftm_restart_responder(mvm, vif); 2615 2616 goto out_unlock; 2617 2618 out_quota_failed: 2619 iwl_mvm_power_update_mac(mvm); 2620 mvmvif->ap_ibss_active = false; 2621 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2622 iwl_mvm_rm_mcast_sta(mvm, vif); 2623 out_unbind: 2624 iwl_mvm_binding_remove_vif(mvm, vif); 2625 out_remove: 2626 iwl_mvm_mac_ctxt_remove(mvm, vif); 2627 out_unlock: 2628 mutex_unlock(&mvm->mutex); 2629 return ret; 2630 } 2631 2632 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw, 2633 struct ieee80211_vif *vif) 2634 { 2635 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2636 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2637 2638 iwl_mvm_prepare_mac_removal(mvm, vif); 2639 2640 mutex_lock(&mvm->mutex); 2641 2642 /* Handle AP stop while in CSA */ 2643 if (rcu_access_pointer(mvm->csa_vif) == vif) { 2644 iwl_mvm_remove_time_event(mvm, mvmvif, 2645 &mvmvif->time_event_data); 2646 RCU_INIT_POINTER(mvm->csa_vif, NULL); 2647 mvmvif->csa_countdown = false; 2648 } 2649 2650 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) { 2651 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 2652 mvm->csa_tx_block_bcn_timeout = 0; 2653 } 2654 2655 mvmvif->ap_ibss_active = false; 2656 mvm->ap_last_beacon_gp2 = 0; 2657 2658 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) { 2659 iwl_mvm_vif_set_low_latency(mvmvif, false, 2660 LOW_LATENCY_VIF_TYPE); 2661 iwl_mvm_send_low_latency_cmd(mvm, false, mvmvif->id); 2662 } 2663 2664 iwl_mvm_bt_coex_vif_change(mvm); 2665 2666 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2667 if (vif->p2p && mvm->p2p_device_vif) 2668 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2669 2670 iwl_mvm_update_quotas(mvm, false, NULL); 2671 2672 iwl_mvm_ftm_responder_clear(mvm, vif); 2673 2674 /* 2675 * This is not very nice, but the simplest: 2676 * For older FWs removing the mcast sta before the bcast station may 2677 * cause assert 0x2b00. 2678 * This is fixed in later FW (which will stop beaconing when removing 2679 * bcast station). 2680 * So make the order of removal depend on the TLV 2681 */ 2682 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2683 iwl_mvm_rm_mcast_sta(mvm, vif); 2684 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2685 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2686 iwl_mvm_rm_mcast_sta(mvm, vif); 2687 iwl_mvm_binding_remove_vif(mvm, vif); 2688 2689 iwl_mvm_power_update_mac(mvm); 2690 2691 iwl_mvm_mac_ctxt_remove(mvm, vif); 2692 2693 mutex_unlock(&mvm->mutex); 2694 } 2695 2696 static void 2697 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm, 2698 struct ieee80211_vif *vif, 2699 struct ieee80211_bss_conf *bss_conf, 2700 u32 changes) 2701 { 2702 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2703 2704 /* Changes will be applied when the AP/IBSS is started */ 2705 if (!mvmvif->ap_ibss_active) 2706 return; 2707 2708 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT | 2709 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) && 2710 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL)) 2711 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2712 2713 /* Need to send a new beacon template to the FW */ 2714 if (changes & BSS_CHANGED_BEACON && 2715 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif)) 2716 IWL_WARN(mvm, "Failed updating beacon data\n"); 2717 2718 if (changes & BSS_CHANGED_FTM_RESPONDER) { 2719 int ret = iwl_mvm_ftm_start_responder(mvm, vif); 2720 2721 if (ret) 2722 IWL_WARN(mvm, "Failed to enable FTM responder (%d)\n", 2723 ret); 2724 } 2725 2726 } 2727 2728 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, 2729 struct ieee80211_vif *vif, 2730 struct ieee80211_bss_conf *bss_conf, 2731 u32 changes) 2732 { 2733 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2734 2735 mutex_lock(&mvm->mutex); 2736 2737 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle) 2738 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2739 2740 switch (vif->type) { 2741 case NL80211_IFTYPE_STATION: 2742 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes); 2743 break; 2744 case NL80211_IFTYPE_AP: 2745 case NL80211_IFTYPE_ADHOC: 2746 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes); 2747 break; 2748 case NL80211_IFTYPE_MONITOR: 2749 if (changes & BSS_CHANGED_MU_GROUPS) 2750 iwl_mvm_update_mu_groups(mvm, vif); 2751 break; 2752 default: 2753 /* shouldn't happen */ 2754 WARN_ON_ONCE(1); 2755 } 2756 2757 if (changes & BSS_CHANGED_TXPOWER) { 2758 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d dBm\n", 2759 bss_conf->txpower); 2760 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2761 } 2762 2763 mutex_unlock(&mvm->mutex); 2764 } 2765 2766 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, 2767 struct ieee80211_vif *vif, 2768 struct ieee80211_scan_request *hw_req) 2769 { 2770 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2771 int ret; 2772 2773 if (hw_req->req.n_channels == 0 || 2774 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels) 2775 return -EINVAL; 2776 2777 mutex_lock(&mvm->mutex); 2778 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies); 2779 mutex_unlock(&mvm->mutex); 2780 2781 return ret; 2782 } 2783 2784 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw, 2785 struct ieee80211_vif *vif) 2786 { 2787 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2788 2789 mutex_lock(&mvm->mutex); 2790 2791 /* Due to a race condition, it's possible that mac80211 asks 2792 * us to stop a hw_scan when it's already stopped. This can 2793 * happen, for instance, if we stopped the scan ourselves, 2794 * called ieee80211_scan_completed() and the userspace called 2795 * cancel scan scan before ieee80211_scan_work() could run. 2796 * To handle that, simply return if the scan is not running. 2797 */ 2798 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) 2799 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2800 2801 mutex_unlock(&mvm->mutex); 2802 } 2803 2804 static void 2805 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw, 2806 struct ieee80211_sta *sta, u16 tids, 2807 int num_frames, 2808 enum ieee80211_frame_release_type reason, 2809 bool more_data) 2810 { 2811 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2812 2813 /* Called when we need to transmit (a) frame(s) from mac80211 */ 2814 2815 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2816 tids, more_data, false); 2817 } 2818 2819 static void 2820 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw, 2821 struct ieee80211_sta *sta, u16 tids, 2822 int num_frames, 2823 enum ieee80211_frame_release_type reason, 2824 bool more_data) 2825 { 2826 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2827 2828 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */ 2829 2830 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2831 tids, more_data, true); 2832 } 2833 2834 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2835 enum sta_notify_cmd cmd, 2836 struct ieee80211_sta *sta) 2837 { 2838 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2839 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2840 unsigned long txqs = 0, tids = 0; 2841 int tid; 2842 2843 /* 2844 * If we have TVQM then we get too high queue numbers - luckily 2845 * we really shouldn't get here with that because such hardware 2846 * should have firmware supporting buffer station offload. 2847 */ 2848 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 2849 return; 2850 2851 spin_lock_bh(&mvmsta->lock); 2852 for (tid = 0; tid < ARRAY_SIZE(mvmsta->tid_data); tid++) { 2853 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2854 2855 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE) 2856 continue; 2857 2858 __set_bit(tid_data->txq_id, &txqs); 2859 2860 if (iwl_mvm_tid_queued(mvm, tid_data) == 0) 2861 continue; 2862 2863 __set_bit(tid, &tids); 2864 } 2865 2866 switch (cmd) { 2867 case STA_NOTIFY_SLEEP: 2868 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT) 2869 ieee80211_sta_set_buffered(sta, tid, true); 2870 2871 if (txqs) 2872 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true); 2873 /* 2874 * The fw updates the STA to be asleep. Tx packets on the Tx 2875 * queues to this station will not be transmitted. The fw will 2876 * send a Tx response with TX_STATUS_FAIL_DEST_PS. 2877 */ 2878 break; 2879 case STA_NOTIFY_AWAKE: 2880 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA)) 2881 break; 2882 2883 if (txqs) 2884 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false); 2885 iwl_mvm_sta_modify_ps_wake(mvm, sta); 2886 break; 2887 default: 2888 break; 2889 } 2890 spin_unlock_bh(&mvmsta->lock); 2891 } 2892 2893 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2894 struct ieee80211_vif *vif, 2895 enum sta_notify_cmd cmd, 2896 struct ieee80211_sta *sta) 2897 { 2898 __iwl_mvm_mac_sta_notify(hw, cmd, sta); 2899 } 2900 2901 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 2902 { 2903 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2904 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data; 2905 struct ieee80211_sta *sta; 2906 struct iwl_mvm_sta *mvmsta; 2907 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE); 2908 2909 if (WARN_ON(notif->sta_id >= mvm->fw->ucode_capa.num_stations)) 2910 return; 2911 2912 rcu_read_lock(); 2913 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]); 2914 if (WARN_ON(IS_ERR_OR_NULL(sta))) { 2915 rcu_read_unlock(); 2916 return; 2917 } 2918 2919 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2920 2921 if (!mvmsta->vif || 2922 mvmsta->vif->type != NL80211_IFTYPE_AP) { 2923 rcu_read_unlock(); 2924 return; 2925 } 2926 2927 if (mvmsta->sleeping != sleeping) { 2928 mvmsta->sleeping = sleeping; 2929 __iwl_mvm_mac_sta_notify(mvm->hw, 2930 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, 2931 sta); 2932 ieee80211_sta_ps_transition(sta, sleeping); 2933 } 2934 2935 if (sleeping) { 2936 switch (notif->type) { 2937 case IWL_MVM_PM_EVENT_AWAKE: 2938 case IWL_MVM_PM_EVENT_ASLEEP: 2939 break; 2940 case IWL_MVM_PM_EVENT_UAPSD: 2941 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS); 2942 break; 2943 case IWL_MVM_PM_EVENT_PS_POLL: 2944 ieee80211_sta_pspoll(sta); 2945 break; 2946 default: 2947 break; 2948 } 2949 } 2950 2951 rcu_read_unlock(); 2952 } 2953 2954 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw, 2955 struct ieee80211_vif *vif, 2956 struct ieee80211_sta *sta) 2957 { 2958 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2959 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2960 2961 /* 2962 * This is called before mac80211 does RCU synchronisation, 2963 * so here we already invalidate our internal RCU-protected 2964 * station pointer. The rest of the code will thus no longer 2965 * be able to find the station this way, and we don't rely 2966 * on further RCU synchronisation after the sta_state() 2967 * callback deleted the station. 2968 */ 2969 mutex_lock(&mvm->mutex); 2970 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id])) 2971 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 2972 ERR_PTR(-ENOENT)); 2973 2974 mutex_unlock(&mvm->mutex); 2975 } 2976 2977 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2978 const u8 *bssid) 2979 { 2980 int i; 2981 2982 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 2983 struct iwl_mvm_tcm_mac *mdata; 2984 2985 mdata = &mvm->tcm.data[iwl_mvm_vif_from_mac80211(vif)->id]; 2986 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate); 2987 mdata->opened_rx_ba_sessions = false; 2988 } 2989 2990 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT)) 2991 return; 2992 2993 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) { 2994 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2995 return; 2996 } 2997 2998 if (!vif->p2p && 2999 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) { 3000 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 3001 return; 3002 } 3003 3004 for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) { 3005 if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) { 3006 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 3007 return; 3008 } 3009 } 3010 3011 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 3012 } 3013 3014 static void 3015 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm, 3016 struct ieee80211_vif *vif, u8 *peer_addr, 3017 enum nl80211_tdls_operation action) 3018 { 3019 struct iwl_fw_dbg_trigger_tlv *trig; 3020 struct iwl_fw_dbg_trigger_tdls *tdls_trig; 3021 3022 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 3023 FW_DBG_TRIGGER_TDLS); 3024 if (!trig) 3025 return; 3026 3027 tdls_trig = (void *)trig->data; 3028 3029 if (!(tdls_trig->action_bitmap & BIT(action))) 3030 return; 3031 3032 if (tdls_trig->peer_mode && 3033 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0) 3034 return; 3035 3036 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 3037 "TDLS event occurred, peer %pM, action %d", 3038 peer_addr, action); 3039 } 3040 3041 struct iwl_mvm_he_obss_narrow_bw_ru_data { 3042 bool tolerated; 3043 }; 3044 3045 static void iwl_mvm_check_he_obss_narrow_bw_ru_iter(struct wiphy *wiphy, 3046 struct cfg80211_bss *bss, 3047 void *_data) 3048 { 3049 struct iwl_mvm_he_obss_narrow_bw_ru_data *data = _data; 3050 const struct cfg80211_bss_ies *ies; 3051 const struct element *elem; 3052 3053 rcu_read_lock(); 3054 ies = rcu_dereference(bss->ies); 3055 elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, ies->data, 3056 ies->len); 3057 3058 if (!elem || elem->datalen < 10 || 3059 !(elem->data[10] & 3060 WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT)) { 3061 data->tolerated = false; 3062 } 3063 rcu_read_unlock(); 3064 } 3065 3066 static void iwl_mvm_check_he_obss_narrow_bw_ru(struct ieee80211_hw *hw, 3067 struct ieee80211_vif *vif) 3068 { 3069 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3070 struct iwl_mvm_he_obss_narrow_bw_ru_data iter_data = { 3071 .tolerated = true, 3072 }; 3073 3074 if (!(vif->bss_conf.chandef.chan->flags & IEEE80211_CHAN_RADAR)) { 3075 mvmvif->he_ru_2mhz_block = false; 3076 return; 3077 } 3078 3079 cfg80211_bss_iter(hw->wiphy, &vif->bss_conf.chandef, 3080 iwl_mvm_check_he_obss_narrow_bw_ru_iter, 3081 &iter_data); 3082 3083 /* 3084 * If there is at least one AP on radar channel that cannot 3085 * tolerate 26-tone RU UL OFDMA transmissions using HE TB PPDU. 3086 */ 3087 mvmvif->he_ru_2mhz_block = !iter_data.tolerated; 3088 } 3089 3090 static void iwl_mvm_reset_cca_40mhz_workaround(struct iwl_mvm *mvm, 3091 struct ieee80211_vif *vif) 3092 { 3093 struct ieee80211_supported_band *sband; 3094 const struct ieee80211_sta_he_cap *he_cap; 3095 3096 if (vif->type != NL80211_IFTYPE_STATION) 3097 return; 3098 3099 if (!mvm->cca_40mhz_workaround) 3100 return; 3101 3102 /* decrement and check that we reached zero */ 3103 mvm->cca_40mhz_workaround--; 3104 if (mvm->cca_40mhz_workaround) 3105 return; 3106 3107 sband = mvm->hw->wiphy->bands[NL80211_BAND_2GHZ]; 3108 3109 sband->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; 3110 3111 he_cap = ieee80211_get_he_iftype_cap(sband, 3112 ieee80211_vif_type_p2p(vif)); 3113 3114 if (he_cap) { 3115 /* we know that ours is writable */ 3116 struct ieee80211_sta_he_cap *he = (void *)(uintptr_t)he_cap; 3117 3118 he->he_cap_elem.phy_cap_info[0] |= 3119 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G; 3120 } 3121 } 3122 3123 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, 3124 struct ieee80211_vif *vif, 3125 struct ieee80211_sta *sta, 3126 enum ieee80211_sta_state old_state, 3127 enum ieee80211_sta_state new_state) 3128 { 3129 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3130 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3131 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3132 int ret; 3133 3134 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n", 3135 sta->addr, old_state, new_state); 3136 3137 /* this would be a mac80211 bug ... but don't crash */ 3138 if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) 3139 return test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status) ? 0 : -EINVAL; 3140 3141 /* 3142 * If we are in a STA removal flow and in DQA mode: 3143 * 3144 * This is after the sync_rcu part, so the queues have already been 3145 * flushed. No more TXs on their way in mac80211's path, and no more in 3146 * the queues. 3147 * Also, we won't be getting any new TX frames for this station. 3148 * What we might have are deferred TX frames that need to be taken care 3149 * of. 3150 * 3151 * Drop any still-queued deferred-frame before removing the STA, and 3152 * make sure the worker is no longer handling frames for this STA. 3153 */ 3154 if (old_state == IEEE80211_STA_NONE && 3155 new_state == IEEE80211_STA_NOTEXIST) { 3156 flush_work(&mvm->add_stream_wk); 3157 3158 /* 3159 * No need to make sure deferred TX indication is off since the 3160 * worker will already remove it if it was on 3161 */ 3162 3163 /* 3164 * Additionally, reset the 40 MHz capability if we disconnected 3165 * from the AP now. 3166 */ 3167 iwl_mvm_reset_cca_40mhz_workaround(mvm, vif); 3168 } 3169 3170 mutex_lock(&mvm->mutex); 3171 /* track whether or not the station is associated */ 3172 mvm_sta->sta_state = new_state; 3173 3174 if (old_state == IEEE80211_STA_NOTEXIST && 3175 new_state == IEEE80211_STA_NONE) { 3176 /* 3177 * Firmware bug - it'll crash if the beacon interval is less 3178 * than 16. We can't avoid connecting at all, so refuse the 3179 * station state change, this will cause mac80211 to abandon 3180 * attempts to connect to this AP, and eventually wpa_s will 3181 * blocklist the AP... 3182 */ 3183 if (vif->type == NL80211_IFTYPE_STATION && 3184 vif->bss_conf.beacon_int < 16) { 3185 IWL_ERR(mvm, 3186 "AP %pM beacon interval is %d, refusing due to firmware bug!\n", 3187 sta->addr, vif->bss_conf.beacon_int); 3188 ret = -EINVAL; 3189 goto out_unlock; 3190 } 3191 3192 if (vif->type == NL80211_IFTYPE_STATION) 3193 vif->bss_conf.he_support = sta->he_cap.has_he; 3194 3195 if (sta->tdls && 3196 (vif->p2p || 3197 iwl_mvm_tdls_sta_count(mvm, NULL) == 3198 IWL_MVM_TDLS_STA_COUNT || 3199 iwl_mvm_phy_ctx_count(mvm) > 1)) { 3200 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n"); 3201 ret = -EBUSY; 3202 goto out_unlock; 3203 } 3204 3205 ret = iwl_mvm_add_sta(mvm, vif, sta); 3206 if (sta->tdls && ret == 0) { 3207 iwl_mvm_recalc_tdls_state(mvm, vif, true); 3208 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3209 NL80211_TDLS_SETUP); 3210 } 3211 3212 sta->max_rc_amsdu_len = 1; 3213 } else if (old_state == IEEE80211_STA_NONE && 3214 new_state == IEEE80211_STA_AUTH) { 3215 /* 3216 * EBS may be disabled due to previous failures reported by FW. 3217 * Reset EBS status here assuming environment has been changed. 3218 */ 3219 mvm->last_ebs_successful = true; 3220 iwl_mvm_check_uapsd(mvm, vif, sta->addr); 3221 ret = 0; 3222 } else if (old_state == IEEE80211_STA_AUTH && 3223 new_state == IEEE80211_STA_ASSOC) { 3224 if (vif->type == NL80211_IFTYPE_AP) { 3225 vif->bss_conf.he_support = sta->he_cap.has_he; 3226 mvmvif->ap_assoc_sta_count++; 3227 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3228 if (vif->bss_conf.he_support && 3229 !iwlwifi_mod_params.disable_11ax) 3230 iwl_mvm_cfg_he_sta(mvm, vif, mvm_sta->sta_id); 3231 } else if (vif->type == NL80211_IFTYPE_STATION) { 3232 vif->bss_conf.he_support = sta->he_cap.has_he; 3233 3234 mvmvif->he_ru_2mhz_block = false; 3235 if (sta->he_cap.has_he) 3236 iwl_mvm_check_he_obss_narrow_bw_ru(hw, vif); 3237 3238 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3239 } 3240 3241 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3242 false); 3243 ret = iwl_mvm_update_sta(mvm, vif, sta); 3244 } else if (old_state == IEEE80211_STA_ASSOC && 3245 new_state == IEEE80211_STA_AUTHORIZED) { 3246 ret = 0; 3247 3248 /* we don't support TDLS during DCM */ 3249 if (iwl_mvm_phy_ctx_count(mvm) > 1) 3250 iwl_mvm_teardown_tdls_peers(mvm); 3251 3252 if (sta->tdls) { 3253 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3254 NL80211_TDLS_ENABLE_LINK); 3255 } else { 3256 /* enable beacon filtering */ 3257 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 3258 3259 mvmvif->authorized = 1; 3260 3261 /* 3262 * Now that the station is authorized, i.e., keys were already 3263 * installed, need to indicate to the FW that 3264 * multicast data frames can be forwarded to the driver 3265 */ 3266 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3267 } 3268 3269 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3270 true); 3271 } else if (old_state == IEEE80211_STA_AUTHORIZED && 3272 new_state == IEEE80211_STA_ASSOC) { 3273 if (!sta->tdls) { 3274 /* Multicast data frames are no longer allowed */ 3275 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3276 3277 /* 3278 * Set this after the above iwl_mvm_mac_ctxt_changed() 3279 * to avoid sending high prio again for a little time. 3280 */ 3281 mvmvif->authorized = 0; 3282 3283 /* disable beacon filtering */ 3284 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 3285 WARN_ON(ret && 3286 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 3287 &mvm->status)); 3288 } 3289 ret = 0; 3290 } else if (old_state == IEEE80211_STA_ASSOC && 3291 new_state == IEEE80211_STA_AUTH) { 3292 if (vif->type == NL80211_IFTYPE_AP) { 3293 mvmvif->ap_assoc_sta_count--; 3294 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3295 } else if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls) { 3296 /* remove session protection if still running */ 3297 iwl_mvm_stop_session_protection(mvm, vif); 3298 } 3299 ret = 0; 3300 } else if (old_state == IEEE80211_STA_AUTH && 3301 new_state == IEEE80211_STA_NONE) { 3302 ret = 0; 3303 } else if (old_state == IEEE80211_STA_NONE && 3304 new_state == IEEE80211_STA_NOTEXIST) { 3305 ret = iwl_mvm_rm_sta(mvm, vif, sta); 3306 if (sta->tdls) { 3307 iwl_mvm_recalc_tdls_state(mvm, vif, false); 3308 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3309 NL80211_TDLS_DISABLE_LINK); 3310 } 3311 3312 if (unlikely(ret && 3313 test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 3314 &mvm->status))) 3315 ret = 0; 3316 } else { 3317 ret = -EIO; 3318 } 3319 out_unlock: 3320 mutex_unlock(&mvm->mutex); 3321 3322 if (sta->tdls && ret == 0) { 3323 if (old_state == IEEE80211_STA_NOTEXIST && 3324 new_state == IEEE80211_STA_NONE) 3325 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID); 3326 else if (old_state == IEEE80211_STA_NONE && 3327 new_state == IEEE80211_STA_NOTEXIST) 3328 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID); 3329 } 3330 3331 return ret; 3332 } 3333 3334 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 3335 { 3336 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3337 3338 mvm->rts_threshold = value; 3339 3340 return 0; 3341 } 3342 3343 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw, 3344 struct ieee80211_vif *vif, 3345 struct ieee80211_sta *sta, u32 changed) 3346 { 3347 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3348 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3349 3350 if (changed & (IEEE80211_RC_BW_CHANGED | 3351 IEEE80211_RC_SUPP_RATES_CHANGED | 3352 IEEE80211_RC_NSS_CHANGED)) 3353 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3354 true); 3355 3356 if (vif->type == NL80211_IFTYPE_STATION && 3357 changed & IEEE80211_RC_NSS_CHANGED) 3358 iwl_mvm_sf_update(mvm, vif, false); 3359 } 3360 3361 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw, 3362 struct ieee80211_vif *vif, u16 ac, 3363 const struct ieee80211_tx_queue_params *params) 3364 { 3365 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3366 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3367 3368 mvmvif->queue_params[ac] = *params; 3369 3370 /* 3371 * No need to update right away, we'll get BSS_CHANGED_QOS 3372 * The exception is P2P_DEVICE interface which needs immediate update. 3373 */ 3374 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 3375 int ret; 3376 3377 mutex_lock(&mvm->mutex); 3378 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3379 mutex_unlock(&mvm->mutex); 3380 return ret; 3381 } 3382 return 0; 3383 } 3384 3385 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, 3386 struct ieee80211_vif *vif, 3387 struct ieee80211_prep_tx_info *info) 3388 { 3389 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3390 3391 mutex_lock(&mvm->mutex); 3392 iwl_mvm_protect_assoc(mvm, vif, info->duration); 3393 mutex_unlock(&mvm->mutex); 3394 } 3395 3396 static void iwl_mvm_mac_mgd_complete_tx(struct ieee80211_hw *hw, 3397 struct ieee80211_vif *vif, 3398 struct ieee80211_prep_tx_info *info) 3399 { 3400 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3401 3402 /* for successful cases (auth/assoc), don't cancel session protection */ 3403 if (info->success) 3404 return; 3405 3406 mutex_lock(&mvm->mutex); 3407 iwl_mvm_stop_session_protection(mvm, vif); 3408 mutex_unlock(&mvm->mutex); 3409 } 3410 3411 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw, 3412 struct ieee80211_vif *vif, 3413 struct cfg80211_sched_scan_request *req, 3414 struct ieee80211_scan_ies *ies) 3415 { 3416 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3417 3418 int ret; 3419 3420 mutex_lock(&mvm->mutex); 3421 3422 if (!vif->bss_conf.idle) { 3423 ret = -EBUSY; 3424 goto out; 3425 } 3426 3427 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED); 3428 3429 out: 3430 mutex_unlock(&mvm->mutex); 3431 return ret; 3432 } 3433 3434 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw, 3435 struct ieee80211_vif *vif) 3436 { 3437 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3438 int ret; 3439 3440 mutex_lock(&mvm->mutex); 3441 3442 /* Due to a race condition, it's possible that mac80211 asks 3443 * us to stop a sched_scan when it's already stopped. This 3444 * can happen, for instance, if we stopped the scan ourselves, 3445 * called ieee80211_sched_scan_stopped() and the userspace called 3446 * stop sched scan scan before ieee80211_sched_scan_stopped_work() 3447 * could run. To handle this, simply return if the scan is 3448 * not running. 3449 */ 3450 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) { 3451 mutex_unlock(&mvm->mutex); 3452 return 0; 3453 } 3454 3455 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false); 3456 mutex_unlock(&mvm->mutex); 3457 iwl_mvm_wait_for_async_handlers(mvm); 3458 3459 return ret; 3460 } 3461 3462 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 3463 enum set_key_cmd cmd, 3464 struct ieee80211_vif *vif, 3465 struct ieee80211_sta *sta, 3466 struct ieee80211_key_conf *key) 3467 { 3468 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3469 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3470 struct iwl_mvm_sta *mvmsta; 3471 struct iwl_mvm_key_pn *ptk_pn; 3472 int keyidx = key->keyidx; 3473 int ret, i; 3474 u8 key_offset; 3475 3476 switch (key->cipher) { 3477 case WLAN_CIPHER_SUITE_TKIP: 3478 if (!mvm->trans->trans_cfg->gen2) { 3479 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; 3480 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3481 } else if (vif->type == NL80211_IFTYPE_STATION) { 3482 key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE; 3483 } else { 3484 IWL_DEBUG_MAC80211(mvm, "Use SW encryption for TKIP\n"); 3485 return -EOPNOTSUPP; 3486 } 3487 break; 3488 case WLAN_CIPHER_SUITE_CCMP: 3489 case WLAN_CIPHER_SUITE_GCMP: 3490 case WLAN_CIPHER_SUITE_GCMP_256: 3491 if (!iwl_mvm_has_new_tx_api(mvm)) 3492 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3493 break; 3494 case WLAN_CIPHER_SUITE_AES_CMAC: 3495 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3496 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3497 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE)); 3498 break; 3499 case WLAN_CIPHER_SUITE_WEP40: 3500 case WLAN_CIPHER_SUITE_WEP104: 3501 if (vif->type == NL80211_IFTYPE_STATION) 3502 break; 3503 if (iwl_mvm_has_new_tx_api(mvm)) 3504 return -EOPNOTSUPP; 3505 /* support HW crypto on TX */ 3506 return 0; 3507 default: 3508 /* currently FW supports only one optional cipher scheme */ 3509 if (hw->n_cipher_schemes && 3510 hw->cipher_schemes->cipher == key->cipher) 3511 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3512 else 3513 return -EOPNOTSUPP; 3514 } 3515 3516 switch (cmd) { 3517 case SET_KEY: 3518 if (keyidx == 6 || keyidx == 7) 3519 rcu_assign_pointer(mvmvif->bcn_prot.keys[keyidx - 6], 3520 key); 3521 3522 if ((vif->type == NL80211_IFTYPE_ADHOC || 3523 vif->type == NL80211_IFTYPE_AP) && !sta) { 3524 /* 3525 * GTK on AP interface is a TX-only key, return 0; 3526 * on IBSS they're per-station and because we're lazy 3527 * we don't support them for RX, so do the same. 3528 * CMAC/GMAC in AP/IBSS modes must be done in software. 3529 */ 3530 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3531 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3532 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3533 ret = -EOPNOTSUPP; 3534 break; 3535 } 3536 3537 if (key->cipher != WLAN_CIPHER_SUITE_GCMP && 3538 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 && 3539 !iwl_mvm_has_new_tx_api(mvm)) { 3540 key->hw_key_idx = STA_KEY_IDX_INVALID; 3541 ret = 0; 3542 break; 3543 } 3544 3545 if (!mvmvif->ap_ibss_active) { 3546 for (i = 0; 3547 i < ARRAY_SIZE(mvmvif->ap_early_keys); 3548 i++) { 3549 if (!mvmvif->ap_early_keys[i]) { 3550 mvmvif->ap_early_keys[i] = key; 3551 break; 3552 } 3553 } 3554 3555 if (i >= ARRAY_SIZE(mvmvif->ap_early_keys)) 3556 ret = -ENOSPC; 3557 else 3558 ret = 0; 3559 3560 break; 3561 } 3562 } 3563 3564 /* During FW restart, in order to restore the state as it was, 3565 * don't try to reprogram keys we previously failed for. 3566 */ 3567 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3568 key->hw_key_idx == STA_KEY_IDX_INVALID) { 3569 IWL_DEBUG_MAC80211(mvm, 3570 "skip invalid idx key programming during restart\n"); 3571 ret = 0; 3572 break; 3573 } 3574 3575 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3576 sta && iwl_mvm_has_new_rx_api(mvm) && 3577 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3578 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3579 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3580 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3581 struct ieee80211_key_seq seq; 3582 int tid, q; 3583 3584 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3585 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx])); 3586 ptk_pn = kzalloc(struct_size(ptk_pn, q, 3587 mvm->trans->num_rx_queues), 3588 GFP_KERNEL); 3589 if (!ptk_pn) { 3590 ret = -ENOMEM; 3591 break; 3592 } 3593 3594 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 3595 ieee80211_get_key_rx_seq(key, tid, &seq); 3596 for (q = 0; q < mvm->trans->num_rx_queues; q++) 3597 memcpy(ptk_pn->q[q].pn[tid], 3598 seq.ccmp.pn, 3599 IEEE80211_CCMP_PN_LEN); 3600 } 3601 3602 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn); 3603 } 3604 3605 /* in HW restart reuse the index, otherwise request a new one */ 3606 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 3607 key_offset = key->hw_key_idx; 3608 else 3609 key_offset = STA_KEY_IDX_INVALID; 3610 3611 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); 3612 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset); 3613 if (ret) { 3614 IWL_WARN(mvm, "set key failed\n"); 3615 key->hw_key_idx = STA_KEY_IDX_INVALID; 3616 /* 3617 * can't add key for RX, but we don't need it 3618 * in the device for TX so still return 0, 3619 * unless we have new TX API where we cannot 3620 * put key material into the TX_CMD 3621 */ 3622 if (iwl_mvm_has_new_tx_api(mvm)) 3623 ret = -EOPNOTSUPP; 3624 else 3625 ret = 0; 3626 } 3627 3628 break; 3629 case DISABLE_KEY: 3630 if (keyidx == 6 || keyidx == 7) 3631 RCU_INIT_POINTER(mvmvif->bcn_prot.keys[keyidx - 6], 3632 NULL); 3633 3634 ret = -ENOENT; 3635 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) { 3636 if (mvmvif->ap_early_keys[i] == key) { 3637 mvmvif->ap_early_keys[i] = NULL; 3638 ret = 0; 3639 } 3640 } 3641 3642 /* found in pending list - don't do anything else */ 3643 if (ret == 0) 3644 break; 3645 3646 if (key->hw_key_idx == STA_KEY_IDX_INVALID) { 3647 ret = 0; 3648 break; 3649 } 3650 3651 if (sta && iwl_mvm_has_new_rx_api(mvm) && 3652 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3653 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3654 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3655 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3656 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3657 ptk_pn = rcu_dereference_protected( 3658 mvmsta->ptk_pn[keyidx], 3659 lockdep_is_held(&mvm->mutex)); 3660 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL); 3661 if (ptk_pn) 3662 kfree_rcu(ptk_pn, rcu_head); 3663 } 3664 3665 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n"); 3666 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key); 3667 break; 3668 default: 3669 ret = -EINVAL; 3670 } 3671 3672 return ret; 3673 } 3674 3675 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 3676 enum set_key_cmd cmd, 3677 struct ieee80211_vif *vif, 3678 struct ieee80211_sta *sta, 3679 struct ieee80211_key_conf *key) 3680 { 3681 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3682 int ret; 3683 3684 mutex_lock(&mvm->mutex); 3685 ret = __iwl_mvm_mac_set_key(hw, cmd, vif, sta, key); 3686 mutex_unlock(&mvm->mutex); 3687 3688 return ret; 3689 } 3690 3691 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, 3692 struct ieee80211_vif *vif, 3693 struct ieee80211_key_conf *keyconf, 3694 struct ieee80211_sta *sta, 3695 u32 iv32, u16 *phase1key) 3696 { 3697 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3698 3699 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID) 3700 return; 3701 3702 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key); 3703 } 3704 3705 3706 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait, 3707 struct iwl_rx_packet *pkt, void *data) 3708 { 3709 struct iwl_mvm *mvm = 3710 container_of(notif_wait, struct iwl_mvm, notif_wait); 3711 struct iwl_hs20_roc_res *resp; 3712 int resp_len = iwl_rx_packet_payload_len(pkt); 3713 struct iwl_mvm_time_event_data *te_data = data; 3714 3715 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD)) 3716 return true; 3717 3718 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 3719 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n"); 3720 return true; 3721 } 3722 3723 resp = (void *)pkt->data; 3724 3725 IWL_DEBUG_TE(mvm, 3726 "Aux ROC: Received response from ucode: status=%d uid=%d\n", 3727 resp->status, resp->event_unique_id); 3728 3729 te_data->uid = le32_to_cpu(resp->event_unique_id); 3730 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n", 3731 te_data->uid); 3732 3733 spin_lock_bh(&mvm->time_event_lock); 3734 list_add_tail(&te_data->list, &mvm->aux_roc_te_list); 3735 spin_unlock_bh(&mvm->time_event_lock); 3736 3737 return true; 3738 } 3739 3740 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100) 3741 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200) 3742 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600) 3743 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20) 3744 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10) 3745 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm, 3746 struct ieee80211_channel *channel, 3747 struct ieee80211_vif *vif, 3748 int duration) 3749 { 3750 int res; 3751 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3752 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data; 3753 static const u16 time_event_response[] = { HOT_SPOT_CMD }; 3754 struct iwl_notification_wait wait_time_event; 3755 u32 dtim_interval = vif->bss_conf.dtim_period * 3756 vif->bss_conf.beacon_int; 3757 u32 req_dur, delay; 3758 struct iwl_hs20_roc_req aux_roc_req = { 3759 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 3760 .id_and_color = 3761 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)), 3762 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id), 3763 }; 3764 struct iwl_hs20_roc_req_tail *tail = iwl_mvm_chan_info_cmd_tail(mvm, 3765 &aux_roc_req.channel_info); 3766 u16 len = sizeof(aux_roc_req) - iwl_mvm_chan_info_padding(mvm); 3767 3768 /* Set the channel info data */ 3769 iwl_mvm_set_chan_info(mvm, &aux_roc_req.channel_info, channel->hw_value, 3770 iwl_mvm_phy_band_from_nl80211(channel->band), 3771 PHY_VHT_CHANNEL_MODE20, 3772 0); 3773 3774 /* Set the time and duration */ 3775 tail->apply_time = cpu_to_le32(iwl_mvm_get_systime(mvm)); 3776 3777 delay = AUX_ROC_MIN_DELAY; 3778 req_dur = MSEC_TO_TU(duration); 3779 3780 /* 3781 * If we are associated we want the delay time to be at least one 3782 * dtim interval so that the FW can wait until after the DTIM and 3783 * then start the time event, this will potentially allow us to 3784 * remain off-channel for the max duration. 3785 * Since we want to use almost a whole dtim interval we would also 3786 * like the delay to be for 2-3 dtim intervals, in case there are 3787 * other time events with higher priority. 3788 */ 3789 if (vif->bss_conf.assoc) { 3790 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY); 3791 /* We cannot remain off-channel longer than the DTIM interval */ 3792 if (dtim_interval <= req_dur) { 3793 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER; 3794 if (req_dur <= AUX_ROC_MIN_DURATION) 3795 req_dur = dtim_interval - 3796 AUX_ROC_MIN_SAFETY_BUFFER; 3797 } 3798 } 3799 3800 tail->duration = cpu_to_le32(req_dur); 3801 tail->apply_time_max_delay = cpu_to_le32(delay); 3802 3803 IWL_DEBUG_TE(mvm, 3804 "ROC: Requesting to remain on channel %u for %ums\n", 3805 channel->hw_value, req_dur); 3806 IWL_DEBUG_TE(mvm, 3807 "\t(requested = %ums, max_delay = %ums, dtim_interval = %ums)\n", 3808 duration, delay, dtim_interval); 3809 3810 /* Set the node address */ 3811 memcpy(tail->node_addr, vif->addr, ETH_ALEN); 3812 3813 lockdep_assert_held(&mvm->mutex); 3814 3815 spin_lock_bh(&mvm->time_event_lock); 3816 3817 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) { 3818 spin_unlock_bh(&mvm->time_event_lock); 3819 return -EIO; 3820 } 3821 3822 te_data->vif = vif; 3823 te_data->duration = duration; 3824 te_data->id = HOT_SPOT_CMD; 3825 3826 spin_unlock_bh(&mvm->time_event_lock); 3827 3828 /* 3829 * Use a notification wait, which really just processes the 3830 * command response and doesn't wait for anything, in order 3831 * to be able to process the response and get the UID inside 3832 * the RX path. Using CMD_WANT_SKB doesn't work because it 3833 * stores the buffer and then wakes up this thread, by which 3834 * time another notification (that the time event started) 3835 * might already be processed unsuccessfully. 3836 */ 3837 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event, 3838 time_event_response, 3839 ARRAY_SIZE(time_event_response), 3840 iwl_mvm_rx_aux_roc, te_data); 3841 3842 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, len, 3843 &aux_roc_req); 3844 3845 if (res) { 3846 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res); 3847 iwl_remove_notification(&mvm->notif_wait, &wait_time_event); 3848 goto out_clear_te; 3849 } 3850 3851 /* No need to wait for anything, so just pass 1 (0 isn't valid) */ 3852 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1); 3853 /* should never fail */ 3854 WARN_ON_ONCE(res); 3855 3856 if (res) { 3857 out_clear_te: 3858 spin_lock_bh(&mvm->time_event_lock); 3859 iwl_mvm_te_clear_data(mvm, te_data); 3860 spin_unlock_bh(&mvm->time_event_lock); 3861 } 3862 3863 return res; 3864 } 3865 3866 static int iwl_mvm_roc(struct ieee80211_hw *hw, 3867 struct ieee80211_vif *vif, 3868 struct ieee80211_channel *channel, 3869 int duration, 3870 enum ieee80211_roc_type type) 3871 { 3872 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3873 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3874 struct cfg80211_chan_def chandef; 3875 struct iwl_mvm_phy_ctxt *phy_ctxt; 3876 bool band_change_removal; 3877 int ret, i; 3878 3879 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value, 3880 duration, type); 3881 3882 /* 3883 * Flush the done work, just in case it's still pending, so that 3884 * the work it does can complete and we can accept new frames. 3885 */ 3886 flush_work(&mvm->roc_done_wk); 3887 3888 mutex_lock(&mvm->mutex); 3889 3890 switch (vif->type) { 3891 case NL80211_IFTYPE_STATION: 3892 if (fw_has_capa(&mvm->fw->ucode_capa, 3893 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) { 3894 /* Use aux roc framework (HS20) */ 3895 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 3896 ADD_STA, 0) >= 12) { 3897 u32 lmac_id; 3898 3899 lmac_id = iwl_mvm_get_lmac_id(mvm->fw, 3900 channel->band); 3901 ret = iwl_mvm_add_aux_sta(mvm, lmac_id); 3902 if (WARN(ret, 3903 "Failed to allocate aux station")) 3904 goto out_unlock; 3905 } 3906 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel, 3907 vif, duration); 3908 goto out_unlock; 3909 } 3910 IWL_ERR(mvm, "hotspot not supported\n"); 3911 ret = -EINVAL; 3912 goto out_unlock; 3913 case NL80211_IFTYPE_P2P_DEVICE: 3914 /* handle below */ 3915 break; 3916 default: 3917 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type); 3918 ret = -EINVAL; 3919 goto out_unlock; 3920 } 3921 3922 for (i = 0; i < NUM_PHY_CTX; i++) { 3923 phy_ctxt = &mvm->phy_ctxts[i]; 3924 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt) 3925 continue; 3926 3927 if (phy_ctxt->ref && channel == phy_ctxt->channel) { 3928 /* 3929 * Unbind the P2P_DEVICE from the current PHY context, 3930 * and if the PHY context is not used remove it. 3931 */ 3932 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3933 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3934 goto out_unlock; 3935 3936 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3937 3938 /* Bind the P2P_DEVICE to the current PHY Context */ 3939 mvmvif->phy_ctxt = phy_ctxt; 3940 3941 ret = iwl_mvm_binding_add_vif(mvm, vif); 3942 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3943 goto out_unlock; 3944 3945 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3946 goto schedule_time_event; 3947 } 3948 } 3949 3950 /* Need to update the PHY context only if the ROC channel changed */ 3951 if (channel == mvmvif->phy_ctxt->channel) 3952 goto schedule_time_event; 3953 3954 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT); 3955 3956 /* 3957 * Check if the remain-on-channel is on a different band and that 3958 * requires context removal, see iwl_mvm_phy_ctxt_changed(). If 3959 * so, we'll need to release and then re-configure here, since we 3960 * must not remove a PHY context that's part of a binding. 3961 */ 3962 band_change_removal = 3963 fw_has_capa(&mvm->fw->ucode_capa, 3964 IWL_UCODE_TLV_CAPA_BINDING_CDB_SUPPORT) && 3965 mvmvif->phy_ctxt->channel->band != chandef.chan->band; 3966 3967 if (mvmvif->phy_ctxt->ref == 1 && !band_change_removal) { 3968 /* 3969 * Change the PHY context configuration as it is currently 3970 * referenced only by the P2P Device MAC (and we can modify it) 3971 */ 3972 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt, 3973 &chandef, 1, 1); 3974 if (ret) 3975 goto out_unlock; 3976 } else { 3977 /* 3978 * The PHY context is shared with other MACs (or we're trying to 3979 * switch bands), so remove the P2P Device from the binding, 3980 * allocate an new PHY context and create a new binding. 3981 */ 3982 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3983 if (!phy_ctxt) { 3984 ret = -ENOSPC; 3985 goto out_unlock; 3986 } 3987 3988 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef, 3989 1, 1); 3990 if (ret) { 3991 IWL_ERR(mvm, "Failed to change PHY context\n"); 3992 goto out_unlock; 3993 } 3994 3995 /* Unbind the P2P_DEVICE from the current PHY context */ 3996 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3997 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3998 goto out_unlock; 3999 4000 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 4001 4002 /* Bind the P2P_DEVICE to the new allocated PHY context */ 4003 mvmvif->phy_ctxt = phy_ctxt; 4004 4005 ret = iwl_mvm_binding_add_vif(mvm, vif); 4006 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 4007 goto out_unlock; 4008 4009 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 4010 } 4011 4012 schedule_time_event: 4013 /* Schedule the time events */ 4014 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type); 4015 4016 out_unlock: 4017 mutex_unlock(&mvm->mutex); 4018 IWL_DEBUG_MAC80211(mvm, "leave\n"); 4019 return ret; 4020 } 4021 4022 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw, 4023 struct ieee80211_vif *vif) 4024 { 4025 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4026 4027 IWL_DEBUG_MAC80211(mvm, "enter\n"); 4028 4029 mutex_lock(&mvm->mutex); 4030 iwl_mvm_stop_roc(mvm, vif); 4031 mutex_unlock(&mvm->mutex); 4032 4033 IWL_DEBUG_MAC80211(mvm, "leave\n"); 4034 return 0; 4035 } 4036 4037 struct iwl_mvm_ftm_responder_iter_data { 4038 bool responder; 4039 struct ieee80211_chanctx_conf *ctx; 4040 }; 4041 4042 static void iwl_mvm_ftm_responder_chanctx_iter(void *_data, u8 *mac, 4043 struct ieee80211_vif *vif) 4044 { 4045 struct iwl_mvm_ftm_responder_iter_data *data = _data; 4046 4047 if (rcu_access_pointer(vif->chanctx_conf) == data->ctx && 4048 vif->type == NL80211_IFTYPE_AP && vif->bss_conf.ftmr_params) 4049 data->responder = true; 4050 } 4051 4052 static bool iwl_mvm_is_ftm_responder_chanctx(struct iwl_mvm *mvm, 4053 struct ieee80211_chanctx_conf *ctx) 4054 { 4055 struct iwl_mvm_ftm_responder_iter_data data = { 4056 .responder = false, 4057 .ctx = ctx, 4058 }; 4059 4060 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 4061 IEEE80211_IFACE_ITER_NORMAL, 4062 iwl_mvm_ftm_responder_chanctx_iter, 4063 &data); 4064 return data.responder; 4065 } 4066 4067 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm, 4068 struct ieee80211_chanctx_conf *ctx) 4069 { 4070 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4071 struct iwl_mvm_phy_ctxt *phy_ctxt; 4072 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx); 4073 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def; 4074 int ret; 4075 4076 lockdep_assert_held(&mvm->mutex); 4077 4078 IWL_DEBUG_MAC80211(mvm, "Add channel context\n"); 4079 4080 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 4081 if (!phy_ctxt) { 4082 ret = -ENOSPC; 4083 goto out; 4084 } 4085 4086 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def, 4087 ctx->rx_chains_static, 4088 ctx->rx_chains_dynamic); 4089 if (ret) { 4090 IWL_ERR(mvm, "Failed to add PHY context\n"); 4091 goto out; 4092 } 4093 4094 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt); 4095 *phy_ctxt_id = phy_ctxt->id; 4096 out: 4097 return ret; 4098 } 4099 4100 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw, 4101 struct ieee80211_chanctx_conf *ctx) 4102 { 4103 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4104 int ret; 4105 4106 mutex_lock(&mvm->mutex); 4107 ret = __iwl_mvm_add_chanctx(mvm, ctx); 4108 mutex_unlock(&mvm->mutex); 4109 4110 return ret; 4111 } 4112 4113 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm, 4114 struct ieee80211_chanctx_conf *ctx) 4115 { 4116 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4117 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 4118 4119 lockdep_assert_held(&mvm->mutex); 4120 4121 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt); 4122 } 4123 4124 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw, 4125 struct ieee80211_chanctx_conf *ctx) 4126 { 4127 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4128 4129 mutex_lock(&mvm->mutex); 4130 __iwl_mvm_remove_chanctx(mvm, ctx); 4131 mutex_unlock(&mvm->mutex); 4132 } 4133 4134 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw, 4135 struct ieee80211_chanctx_conf *ctx, 4136 u32 changed) 4137 { 4138 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4139 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4140 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 4141 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx); 4142 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def; 4143 4144 if (WARN_ONCE((phy_ctxt->ref > 1) && 4145 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH | 4146 IEEE80211_CHANCTX_CHANGE_RX_CHAINS | 4147 IEEE80211_CHANCTX_CHANGE_RADAR | 4148 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)), 4149 "Cannot change PHY. Ref=%d, changed=0x%X\n", 4150 phy_ctxt->ref, changed)) 4151 return; 4152 4153 mutex_lock(&mvm->mutex); 4154 4155 /* we are only changing the min_width, may be a noop */ 4156 if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) { 4157 if (phy_ctxt->width == def->width) 4158 goto out_unlock; 4159 4160 /* we are just toggling between 20_NOHT and 20 */ 4161 if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 && 4162 def->width <= NL80211_CHAN_WIDTH_20) 4163 goto out_unlock; 4164 } 4165 4166 iwl_mvm_bt_coex_vif_change(mvm); 4167 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def, 4168 ctx->rx_chains_static, 4169 ctx->rx_chains_dynamic); 4170 4171 out_unlock: 4172 mutex_unlock(&mvm->mutex); 4173 } 4174 4175 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm, 4176 struct ieee80211_vif *vif, 4177 struct ieee80211_chanctx_conf *ctx, 4178 bool switching_chanctx) 4179 { 4180 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4181 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 4182 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4183 int ret; 4184 4185 lockdep_assert_held(&mvm->mutex); 4186 4187 mvmvif->phy_ctxt = phy_ctxt; 4188 4189 switch (vif->type) { 4190 case NL80211_IFTYPE_AP: 4191 /* only needed if we're switching chanctx (i.e. during CSA) */ 4192 if (switching_chanctx) { 4193 mvmvif->ap_ibss_active = true; 4194 break; 4195 } 4196 fallthrough; 4197 case NL80211_IFTYPE_ADHOC: 4198 /* 4199 * The AP binding flow is handled as part of the start_ap flow 4200 * (in bss_info_changed), similarly for IBSS. 4201 */ 4202 ret = 0; 4203 goto out; 4204 case NL80211_IFTYPE_STATION: 4205 mvmvif->csa_bcn_pending = false; 4206 break; 4207 case NL80211_IFTYPE_MONITOR: 4208 /* always disable PS when a monitor interface is active */ 4209 mvmvif->ps_disabled = true; 4210 break; 4211 default: 4212 ret = -EINVAL; 4213 goto out; 4214 } 4215 4216 ret = iwl_mvm_binding_add_vif(mvm, vif); 4217 if (ret) 4218 goto out; 4219 4220 /* 4221 * Power state must be updated before quotas, 4222 * otherwise fw will complain. 4223 */ 4224 iwl_mvm_power_update_mac(mvm); 4225 4226 /* Setting the quota at this stage is only required for monitor 4227 * interfaces. For the other types, the bss_info changed flow 4228 * will handle quota settings. 4229 */ 4230 if (vif->type == NL80211_IFTYPE_MONITOR) { 4231 mvmvif->monitor_active = true; 4232 ret = iwl_mvm_update_quotas(mvm, false, NULL); 4233 if (ret) 4234 goto out_remove_binding; 4235 4236 ret = iwl_mvm_add_snif_sta(mvm, vif); 4237 if (ret) 4238 goto out_remove_binding; 4239 4240 } 4241 4242 /* Handle binding during CSA */ 4243 if (vif->type == NL80211_IFTYPE_AP) { 4244 iwl_mvm_update_quotas(mvm, false, NULL); 4245 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 4246 } 4247 4248 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) { 4249 mvmvif->csa_bcn_pending = true; 4250 4251 if (!fw_has_capa(&mvm->fw->ucode_capa, 4252 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { 4253 u32 duration = 3 * vif->bss_conf.beacon_int; 4254 4255 /* Protect the session to make sure we hear the first 4256 * beacon on the new channel. 4257 */ 4258 iwl_mvm_protect_session(mvm, vif, duration, duration, 4259 vif->bss_conf.beacon_int / 2, 4260 true); 4261 } 4262 4263 iwl_mvm_update_quotas(mvm, false, NULL); 4264 } 4265 4266 goto out; 4267 4268 out_remove_binding: 4269 iwl_mvm_binding_remove_vif(mvm, vif); 4270 iwl_mvm_power_update_mac(mvm); 4271 out: 4272 if (ret) 4273 mvmvif->phy_ctxt = NULL; 4274 return ret; 4275 } 4276 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw, 4277 struct ieee80211_vif *vif, 4278 struct ieee80211_chanctx_conf *ctx) 4279 { 4280 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4281 int ret; 4282 4283 mutex_lock(&mvm->mutex); 4284 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false); 4285 mutex_unlock(&mvm->mutex); 4286 4287 return ret; 4288 } 4289 4290 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm, 4291 struct ieee80211_vif *vif, 4292 struct ieee80211_chanctx_conf *ctx, 4293 bool switching_chanctx) 4294 { 4295 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4296 struct ieee80211_vif *disabled_vif = NULL; 4297 4298 lockdep_assert_held(&mvm->mutex); 4299 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); 4300 4301 switch (vif->type) { 4302 case NL80211_IFTYPE_ADHOC: 4303 goto out; 4304 case NL80211_IFTYPE_MONITOR: 4305 mvmvif->monitor_active = false; 4306 mvmvif->ps_disabled = false; 4307 iwl_mvm_rm_snif_sta(mvm, vif); 4308 break; 4309 case NL80211_IFTYPE_AP: 4310 /* This part is triggered only during CSA */ 4311 if (!switching_chanctx || !mvmvif->ap_ibss_active) 4312 goto out; 4313 4314 mvmvif->csa_countdown = false; 4315 4316 /* Set CS bit on all the stations */ 4317 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true); 4318 4319 /* Save blocked iface, the timeout is set on the next beacon */ 4320 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif); 4321 4322 mvmvif->ap_ibss_active = false; 4323 break; 4324 case NL80211_IFTYPE_STATION: 4325 if (!switching_chanctx) 4326 break; 4327 4328 disabled_vif = vif; 4329 4330 if (!fw_has_capa(&mvm->fw->ucode_capa, 4331 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) 4332 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL); 4333 break; 4334 default: 4335 break; 4336 } 4337 4338 iwl_mvm_update_quotas(mvm, false, disabled_vif); 4339 iwl_mvm_binding_remove_vif(mvm, vif); 4340 4341 out: 4342 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD) && 4343 switching_chanctx) 4344 return; 4345 mvmvif->phy_ctxt = NULL; 4346 iwl_mvm_power_update_mac(mvm); 4347 } 4348 4349 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, 4350 struct ieee80211_vif *vif, 4351 struct ieee80211_chanctx_conf *ctx) 4352 { 4353 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4354 4355 mutex_lock(&mvm->mutex); 4356 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false); 4357 mutex_unlock(&mvm->mutex); 4358 } 4359 4360 static int 4361 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm, 4362 struct ieee80211_vif_chanctx_switch *vifs) 4363 { 4364 int ret; 4365 4366 mutex_lock(&mvm->mutex); 4367 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 4368 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx); 4369 4370 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx); 4371 if (ret) { 4372 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n"); 4373 goto out_reassign; 4374 } 4375 4376 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 4377 true); 4378 if (ret) { 4379 IWL_ERR(mvm, 4380 "failed to assign new_ctx during channel switch\n"); 4381 goto out_remove; 4382 } 4383 4384 /* we don't support TDLS during DCM - can be caused by channel switch */ 4385 if (iwl_mvm_phy_ctx_count(mvm) > 1) 4386 iwl_mvm_teardown_tdls_peers(mvm); 4387 4388 goto out; 4389 4390 out_remove: 4391 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx); 4392 4393 out_reassign: 4394 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) { 4395 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n"); 4396 goto out_restart; 4397 } 4398 4399 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 4400 true)) { 4401 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 4402 goto out_restart; 4403 } 4404 4405 goto out; 4406 4407 out_restart: 4408 /* things keep failing, better restart the hw */ 4409 iwl_mvm_nic_restart(mvm, false); 4410 4411 out: 4412 mutex_unlock(&mvm->mutex); 4413 4414 return ret; 4415 } 4416 4417 static int 4418 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm, 4419 struct ieee80211_vif_chanctx_switch *vifs) 4420 { 4421 int ret; 4422 4423 mutex_lock(&mvm->mutex); 4424 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 4425 4426 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 4427 true); 4428 if (ret) { 4429 IWL_ERR(mvm, 4430 "failed to assign new_ctx during channel switch\n"); 4431 goto out_reassign; 4432 } 4433 4434 goto out; 4435 4436 out_reassign: 4437 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 4438 true)) { 4439 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 4440 goto out_restart; 4441 } 4442 4443 goto out; 4444 4445 out_restart: 4446 /* things keep failing, better restart the hw */ 4447 iwl_mvm_nic_restart(mvm, false); 4448 4449 out: 4450 mutex_unlock(&mvm->mutex); 4451 4452 return ret; 4453 } 4454 4455 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, 4456 struct ieee80211_vif_chanctx_switch *vifs, 4457 int n_vifs, 4458 enum ieee80211_chanctx_switch_mode mode) 4459 { 4460 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4461 int ret; 4462 4463 /* we only support a single-vif right now */ 4464 if (n_vifs > 1) 4465 return -EOPNOTSUPP; 4466 4467 switch (mode) { 4468 case CHANCTX_SWMODE_SWAP_CONTEXTS: 4469 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs); 4470 break; 4471 case CHANCTX_SWMODE_REASSIGN_VIF: 4472 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs); 4473 break; 4474 default: 4475 ret = -EOPNOTSUPP; 4476 break; 4477 } 4478 4479 return ret; 4480 } 4481 4482 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw) 4483 { 4484 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4485 4486 return mvm->ibss_manager; 4487 } 4488 4489 static int iwl_mvm_set_tim(struct ieee80211_hw *hw, 4490 struct ieee80211_sta *sta, 4491 bool set) 4492 { 4493 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4494 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4495 4496 if (!mvm_sta || !mvm_sta->vif) { 4497 IWL_ERR(mvm, "Station is not associated to a vif\n"); 4498 return -EINVAL; 4499 } 4500 4501 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif); 4502 } 4503 4504 #ifdef CONFIG_NL80211_TESTMODE 4505 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = { 4506 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 }, 4507 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 }, 4508 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 }, 4509 }; 4510 4511 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm, 4512 struct ieee80211_vif *vif, 4513 void *data, int len) 4514 { 4515 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1]; 4516 int err; 4517 u32 noa_duration; 4518 4519 err = nla_parse_deprecated(tb, IWL_MVM_TM_ATTR_MAX, data, len, 4520 iwl_mvm_tm_policy, NULL); 4521 if (err) 4522 return err; 4523 4524 if (!tb[IWL_MVM_TM_ATTR_CMD]) 4525 return -EINVAL; 4526 4527 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) { 4528 case IWL_MVM_TM_CMD_SET_NOA: 4529 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p || 4530 !vif->bss_conf.enable_beacon || 4531 !tb[IWL_MVM_TM_ATTR_NOA_DURATION]) 4532 return -EINVAL; 4533 4534 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]); 4535 if (noa_duration >= vif->bss_conf.beacon_int) 4536 return -EINVAL; 4537 4538 mvm->noa_duration = noa_duration; 4539 mvm->noa_vif = vif; 4540 4541 return iwl_mvm_update_quotas(mvm, true, NULL); 4542 case IWL_MVM_TM_CMD_SET_BEACON_FILTER: 4543 /* must be associated client vif - ignore authorized */ 4544 if (!vif || vif->type != NL80211_IFTYPE_STATION || 4545 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period || 4546 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]) 4547 return -EINVAL; 4548 4549 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])) 4550 return iwl_mvm_enable_beacon_filter(mvm, vif, 0); 4551 return iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4552 } 4553 4554 return -EOPNOTSUPP; 4555 } 4556 4557 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw, 4558 struct ieee80211_vif *vif, 4559 void *data, int len) 4560 { 4561 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4562 int err; 4563 4564 mutex_lock(&mvm->mutex); 4565 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len); 4566 mutex_unlock(&mvm->mutex); 4567 4568 return err; 4569 } 4570 #endif 4571 4572 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw, 4573 struct ieee80211_vif *vif, 4574 struct ieee80211_channel_switch *chsw) 4575 { 4576 /* By implementing this operation, we prevent mac80211 from 4577 * starting its own channel switch timer, so that we can call 4578 * ieee80211_chswitch_done() ourselves at the right time 4579 * (which is when the absence time event starts). 4580 */ 4581 4582 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw), 4583 "dummy channel switch op\n"); 4584 } 4585 4586 static int iwl_mvm_schedule_client_csa(struct iwl_mvm *mvm, 4587 struct ieee80211_vif *vif, 4588 struct ieee80211_channel_switch *chsw) 4589 { 4590 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4591 struct iwl_chan_switch_te_cmd cmd = { 4592 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 4593 mvmvif->color)), 4594 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 4595 .tsf = cpu_to_le32(chsw->timestamp), 4596 .cs_count = chsw->count, 4597 .cs_mode = chsw->block_tx, 4598 }; 4599 4600 lockdep_assert_held(&mvm->mutex); 4601 4602 if (chsw->delay) 4603 cmd.cs_delayed_bcn_count = 4604 DIV_ROUND_UP(chsw->delay, vif->bss_conf.beacon_int); 4605 4606 return iwl_mvm_send_cmd_pdu(mvm, 4607 WIDE_ID(MAC_CONF_GROUP, 4608 CHANNEL_SWITCH_TIME_EVENT_CMD), 4609 0, sizeof(cmd), &cmd); 4610 } 4611 4612 static int iwl_mvm_old_pre_chan_sw_sta(struct iwl_mvm *mvm, 4613 struct ieee80211_vif *vif, 4614 struct ieee80211_channel_switch *chsw) 4615 { 4616 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4617 u32 apply_time; 4618 4619 /* Schedule the time event to a bit before beacon 1, 4620 * to make sure we're in the new channel when the 4621 * GO/AP arrives. In case count <= 1 immediately schedule the 4622 * TE (this might result with some packet loss or connection 4623 * loss). 4624 */ 4625 if (chsw->count <= 1) 4626 apply_time = 0; 4627 else 4628 apply_time = chsw->device_timestamp + 4629 ((vif->bss_conf.beacon_int * (chsw->count - 1) - 4630 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024); 4631 4632 if (chsw->block_tx) 4633 iwl_mvm_csa_client_absent(mvm, vif); 4634 4635 if (mvmvif->bf_data.bf_enabled) { 4636 int ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4637 4638 if (ret) 4639 return ret; 4640 } 4641 4642 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int, 4643 apply_time); 4644 4645 return 0; 4646 } 4647 4648 #define IWL_MAX_CSA_BLOCK_TX 1500 4649 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, 4650 struct ieee80211_vif *vif, 4651 struct ieee80211_channel_switch *chsw) 4652 { 4653 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4654 struct ieee80211_vif *csa_vif; 4655 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4656 int ret; 4657 4658 mutex_lock(&mvm->mutex); 4659 4660 mvmvif->csa_failed = false; 4661 4662 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n", 4663 chsw->chandef.center_freq1); 4664 4665 iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt, 4666 ieee80211_vif_to_wdev(vif), 4667 FW_DBG_TRIGGER_CHANNEL_SWITCH); 4668 4669 switch (vif->type) { 4670 case NL80211_IFTYPE_AP: 4671 csa_vif = 4672 rcu_dereference_protected(mvm->csa_vif, 4673 lockdep_is_held(&mvm->mutex)); 4674 if (WARN_ONCE(csa_vif && csa_vif->csa_active, 4675 "Another CSA is already in progress")) { 4676 ret = -EBUSY; 4677 goto out_unlock; 4678 } 4679 4680 /* we still didn't unblock tx. prevent new CS meanwhile */ 4681 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif, 4682 lockdep_is_held(&mvm->mutex))) { 4683 ret = -EBUSY; 4684 goto out_unlock; 4685 } 4686 4687 rcu_assign_pointer(mvm->csa_vif, vif); 4688 4689 if (WARN_ONCE(mvmvif->csa_countdown, 4690 "Previous CSA countdown didn't complete")) { 4691 ret = -EBUSY; 4692 goto out_unlock; 4693 } 4694 4695 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq; 4696 4697 break; 4698 case NL80211_IFTYPE_STATION: 4699 /* 4700 * We haven't configured the firmware to be associated yet since 4701 * we don't know the dtim period. In this case, the firmware can't 4702 * track the beacons. 4703 */ 4704 if (!vif->bss_conf.assoc || !vif->bss_conf.dtim_period) { 4705 ret = -EBUSY; 4706 goto out_unlock; 4707 } 4708 4709 if (chsw->delay > IWL_MAX_CSA_BLOCK_TX) 4710 schedule_delayed_work(&mvmvif->csa_work, 0); 4711 4712 if (chsw->block_tx) { 4713 /* 4714 * In case of undetermined / long time with immediate 4715 * quiet monitor status to gracefully disconnect 4716 */ 4717 if (!chsw->count || 4718 chsw->count * vif->bss_conf.beacon_int > 4719 IWL_MAX_CSA_BLOCK_TX) 4720 schedule_delayed_work(&mvmvif->csa_work, 4721 msecs_to_jiffies(IWL_MAX_CSA_BLOCK_TX)); 4722 } 4723 4724 if (!fw_has_capa(&mvm->fw->ucode_capa, 4725 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { 4726 ret = iwl_mvm_old_pre_chan_sw_sta(mvm, vif, chsw); 4727 if (ret) 4728 goto out_unlock; 4729 } else { 4730 iwl_mvm_schedule_client_csa(mvm, vif, chsw); 4731 } 4732 4733 mvmvif->csa_count = chsw->count; 4734 mvmvif->csa_misbehave = false; 4735 break; 4736 default: 4737 break; 4738 } 4739 4740 mvmvif->ps_disabled = true; 4741 4742 ret = iwl_mvm_power_update_ps(mvm); 4743 if (ret) 4744 goto out_unlock; 4745 4746 /* we won't be on this channel any longer */ 4747 iwl_mvm_teardown_tdls_peers(mvm); 4748 4749 out_unlock: 4750 mutex_unlock(&mvm->mutex); 4751 4752 return ret; 4753 } 4754 4755 static void iwl_mvm_channel_switch_rx_beacon(struct ieee80211_hw *hw, 4756 struct ieee80211_vif *vif, 4757 struct ieee80211_channel_switch *chsw) 4758 { 4759 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4760 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4761 struct iwl_chan_switch_te_cmd cmd = { 4762 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 4763 mvmvif->color)), 4764 .action = cpu_to_le32(FW_CTXT_ACTION_MODIFY), 4765 .tsf = cpu_to_le32(chsw->timestamp), 4766 .cs_count = chsw->count, 4767 .cs_mode = chsw->block_tx, 4768 }; 4769 4770 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CS_MODIFY)) 4771 return; 4772 4773 IWL_DEBUG_MAC80211(mvm, "Modify CSA on mac %d count = %d (old %d) mode = %d\n", 4774 mvmvif->id, chsw->count, mvmvif->csa_count, chsw->block_tx); 4775 4776 if (chsw->count >= mvmvif->csa_count && chsw->block_tx) { 4777 if (mvmvif->csa_misbehave) { 4778 /* Second time, give up on this AP*/ 4779 iwl_mvm_abort_channel_switch(hw, vif); 4780 ieee80211_chswitch_done(vif, false); 4781 mvmvif->csa_misbehave = false; 4782 return; 4783 } 4784 mvmvif->csa_misbehave = true; 4785 } 4786 mvmvif->csa_count = chsw->count; 4787 4788 mutex_lock(&mvm->mutex); 4789 if (mvmvif->csa_failed) 4790 goto out_unlock; 4791 4792 WARN_ON(iwl_mvm_send_cmd_pdu(mvm, 4793 WIDE_ID(MAC_CONF_GROUP, 4794 CHANNEL_SWITCH_TIME_EVENT_CMD), 4795 0, sizeof(cmd), &cmd)); 4796 out_unlock: 4797 mutex_unlock(&mvm->mutex); 4798 } 4799 4800 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop) 4801 { 4802 int i; 4803 4804 if (!iwl_mvm_has_new_tx_api(mvm)) { 4805 if (drop) { 4806 mutex_lock(&mvm->mutex); 4807 iwl_mvm_flush_tx_path(mvm, 4808 iwl_mvm_flushable_queues(mvm) & queues); 4809 mutex_unlock(&mvm->mutex); 4810 } else { 4811 iwl_trans_wait_tx_queues_empty(mvm->trans, queues); 4812 } 4813 return; 4814 } 4815 4816 mutex_lock(&mvm->mutex); 4817 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 4818 struct ieee80211_sta *sta; 4819 4820 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4821 lockdep_is_held(&mvm->mutex)); 4822 if (IS_ERR_OR_NULL(sta)) 4823 continue; 4824 4825 if (drop) 4826 iwl_mvm_flush_sta_tids(mvm, i, 0xFFFF); 4827 else 4828 iwl_mvm_wait_sta_queues_empty(mvm, 4829 iwl_mvm_sta_from_mac80211(sta)); 4830 } 4831 mutex_unlock(&mvm->mutex); 4832 } 4833 4834 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw, 4835 struct ieee80211_vif *vif, u32 queues, bool drop) 4836 { 4837 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4838 struct iwl_mvm_vif *mvmvif; 4839 struct iwl_mvm_sta *mvmsta; 4840 struct ieee80211_sta *sta; 4841 int i; 4842 u32 msk = 0; 4843 4844 if (!vif) { 4845 iwl_mvm_flush_no_vif(mvm, queues, drop); 4846 return; 4847 } 4848 4849 if (vif->type != NL80211_IFTYPE_STATION) 4850 return; 4851 4852 /* Make sure we're done with the deferred traffic before flushing */ 4853 flush_work(&mvm->add_stream_wk); 4854 4855 mutex_lock(&mvm->mutex); 4856 mvmvif = iwl_mvm_vif_from_mac80211(vif); 4857 4858 /* flush the AP-station and all TDLS peers */ 4859 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 4860 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4861 lockdep_is_held(&mvm->mutex)); 4862 if (IS_ERR_OR_NULL(sta)) 4863 continue; 4864 4865 mvmsta = iwl_mvm_sta_from_mac80211(sta); 4866 if (mvmsta->vif != vif) 4867 continue; 4868 4869 /* make sure only TDLS peers or the AP are flushed */ 4870 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls); 4871 4872 if (drop) { 4873 if (iwl_mvm_flush_sta(mvm, mvmsta, false)) 4874 IWL_ERR(mvm, "flush request fail\n"); 4875 } else { 4876 msk |= mvmsta->tfd_queue_msk; 4877 if (iwl_mvm_has_new_tx_api(mvm)) 4878 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta); 4879 } 4880 } 4881 4882 mutex_unlock(&mvm->mutex); 4883 4884 /* this can take a while, and we may need/want other operations 4885 * to succeed while doing this, so do it without the mutex held 4886 */ 4887 if (!drop && !iwl_mvm_has_new_tx_api(mvm)) 4888 iwl_trans_wait_tx_queues_empty(mvm->trans, msk); 4889 } 4890 4891 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx, 4892 struct survey_info *survey) 4893 { 4894 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4895 int ret; 4896 4897 memset(survey, 0, sizeof(*survey)); 4898 4899 /* only support global statistics right now */ 4900 if (idx != 0) 4901 return -ENOENT; 4902 4903 if (!fw_has_capa(&mvm->fw->ucode_capa, 4904 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4905 return -ENOENT; 4906 4907 mutex_lock(&mvm->mutex); 4908 4909 if (iwl_mvm_firmware_running(mvm)) { 4910 ret = iwl_mvm_request_statistics(mvm, false); 4911 if (ret) 4912 goto out; 4913 } 4914 4915 survey->filled = SURVEY_INFO_TIME | 4916 SURVEY_INFO_TIME_RX | 4917 SURVEY_INFO_TIME_TX | 4918 SURVEY_INFO_TIME_SCAN; 4919 survey->time = mvm->accu_radio_stats.on_time_rf + 4920 mvm->radio_stats.on_time_rf; 4921 do_div(survey->time, USEC_PER_MSEC); 4922 4923 survey->time_rx = mvm->accu_radio_stats.rx_time + 4924 mvm->radio_stats.rx_time; 4925 do_div(survey->time_rx, USEC_PER_MSEC); 4926 4927 survey->time_tx = mvm->accu_radio_stats.tx_time + 4928 mvm->radio_stats.tx_time; 4929 do_div(survey->time_tx, USEC_PER_MSEC); 4930 4931 survey->time_scan = mvm->accu_radio_stats.on_time_scan + 4932 mvm->radio_stats.on_time_scan; 4933 do_div(survey->time_scan, USEC_PER_MSEC); 4934 4935 ret = 0; 4936 out: 4937 mutex_unlock(&mvm->mutex); 4938 return ret; 4939 } 4940 4941 static void iwl_mvm_set_sta_rate(u32 rate_n_flags, struct rate_info *rinfo) 4942 { 4943 u32 format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK; 4944 4945 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { 4946 case RATE_MCS_CHAN_WIDTH_20: 4947 rinfo->bw = RATE_INFO_BW_20; 4948 break; 4949 case RATE_MCS_CHAN_WIDTH_40: 4950 rinfo->bw = RATE_INFO_BW_40; 4951 break; 4952 case RATE_MCS_CHAN_WIDTH_80: 4953 rinfo->bw = RATE_INFO_BW_80; 4954 break; 4955 case RATE_MCS_CHAN_WIDTH_160: 4956 rinfo->bw = RATE_INFO_BW_160; 4957 break; 4958 } 4959 4960 if (format == RATE_MCS_CCK_MSK || 4961 format == RATE_MCS_LEGACY_OFDM_MSK) { 4962 int rate = u32_get_bits(rate_n_flags, RATE_LEGACY_RATE_MSK); 4963 4964 /* add the offset needed to get to the legacy ofdm indices */ 4965 if (format == RATE_MCS_LEGACY_OFDM_MSK) 4966 rate += IWL_FIRST_OFDM_RATE; 4967 4968 switch (rate) { 4969 case IWL_RATE_1M_INDEX: 4970 rinfo->legacy = 10; 4971 break; 4972 case IWL_RATE_2M_INDEX: 4973 rinfo->legacy = 20; 4974 break; 4975 case IWL_RATE_5M_INDEX: 4976 rinfo->legacy = 55; 4977 break; 4978 case IWL_RATE_11M_INDEX: 4979 rinfo->legacy = 110; 4980 break; 4981 case IWL_RATE_6M_INDEX: 4982 rinfo->legacy = 60; 4983 break; 4984 case IWL_RATE_9M_INDEX: 4985 rinfo->legacy = 90; 4986 break; 4987 case IWL_RATE_12M_INDEX: 4988 rinfo->legacy = 120; 4989 break; 4990 case IWL_RATE_18M_INDEX: 4991 rinfo->legacy = 180; 4992 break; 4993 case IWL_RATE_24M_INDEX: 4994 rinfo->legacy = 240; 4995 break; 4996 case IWL_RATE_36M_INDEX: 4997 rinfo->legacy = 360; 4998 break; 4999 case IWL_RATE_48M_INDEX: 5000 rinfo->legacy = 480; 5001 break; 5002 case IWL_RATE_54M_INDEX: 5003 rinfo->legacy = 540; 5004 } 5005 return; 5006 } 5007 5008 rinfo->nss = u32_get_bits(rate_n_flags, 5009 RATE_MCS_NSS_MSK) + 1; 5010 rinfo->mcs = format == RATE_MCS_HT_MSK ? 5011 RATE_HT_MCS_INDEX(rate_n_flags) : 5012 u32_get_bits(rate_n_flags, RATE_MCS_CODE_MSK); 5013 5014 if (format == RATE_MCS_HE_MSK) { 5015 u32 gi_ltf = u32_get_bits(rate_n_flags, 5016 RATE_MCS_HE_GI_LTF_MSK); 5017 5018 rinfo->flags |= RATE_INFO_FLAGS_HE_MCS; 5019 5020 if (rate_n_flags & RATE_MCS_HE_106T_MSK) { 5021 rinfo->bw = RATE_INFO_BW_HE_RU; 5022 rinfo->he_ru_alloc = NL80211_RATE_INFO_HE_RU_ALLOC_106; 5023 } 5024 5025 switch (rate_n_flags & RATE_MCS_HE_TYPE_MSK) { 5026 case RATE_MCS_HE_TYPE_SU: 5027 case RATE_MCS_HE_TYPE_EXT_SU: 5028 if (gi_ltf == 0 || gi_ltf == 1) 5029 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; 5030 else if (gi_ltf == 2) 5031 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; 5032 else if (gi_ltf == 3) 5033 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; 5034 else 5035 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; 5036 break; 5037 case RATE_MCS_HE_TYPE_MU: 5038 if (gi_ltf == 0 || gi_ltf == 1) 5039 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; 5040 else if (gi_ltf == 2) 5041 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; 5042 else 5043 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; 5044 break; 5045 case RATE_MCS_HE_TYPE_TRIG: 5046 if (gi_ltf == 0 || gi_ltf == 1) 5047 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; 5048 else 5049 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; 5050 break; 5051 } 5052 5053 if (rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK) 5054 rinfo->he_dcm = 1; 5055 return; 5056 } 5057 5058 if (rate_n_flags & RATE_MCS_SGI_MSK) 5059 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 5060 5061 if (format == RATE_MCS_HT_MSK) { 5062 rinfo->flags |= RATE_INFO_FLAGS_MCS; 5063 5064 } else if (format == RATE_MCS_VHT_MSK) { 5065 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 5066 } 5067 5068 } 5069 5070 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw, 5071 struct ieee80211_vif *vif, 5072 struct ieee80211_sta *sta, 5073 struct station_info *sinfo) 5074 { 5075 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5076 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 5077 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 5078 5079 if (mvmsta->avg_energy) { 5080 sinfo->signal_avg = -(s8)mvmsta->avg_energy; 5081 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); 5082 } 5083 5084 if (iwl_mvm_has_tlc_offload(mvm)) { 5085 struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw; 5086 5087 iwl_mvm_set_sta_rate(lq_sta->last_rate_n_flags, &sinfo->txrate); 5088 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE); 5089 } 5090 5091 /* if beacon filtering isn't on mac80211 does it anyway */ 5092 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER)) 5093 return; 5094 5095 if (!vif->bss_conf.assoc) 5096 return; 5097 5098 mutex_lock(&mvm->mutex); 5099 5100 if (mvmvif->ap_sta_id != mvmsta->sta_id) 5101 goto unlock; 5102 5103 if (iwl_mvm_request_statistics(mvm, false)) 5104 goto unlock; 5105 5106 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons + 5107 mvmvif->beacon_stats.accu_num_beacons; 5108 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX); 5109 if (mvmvif->beacon_stats.avg_signal) { 5110 /* firmware only reports a value after RXing a few beacons */ 5111 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal; 5112 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG); 5113 } 5114 unlock: 5115 mutex_unlock(&mvm->mutex); 5116 } 5117 5118 static void iwl_mvm_event_mlme_callback_ini(struct iwl_mvm *mvm, 5119 struct ieee80211_vif *vif, 5120 const struct ieee80211_mlme_event *mlme) 5121 { 5122 if ((mlme->data == ASSOC_EVENT || mlme->data == AUTH_EVENT) && 5123 (mlme->status == MLME_DENIED || mlme->status == MLME_TIMEOUT)) { 5124 iwl_dbg_tlv_time_point(&mvm->fwrt, 5125 IWL_FW_INI_TIME_POINT_ASSOC_FAILED, 5126 NULL); 5127 return; 5128 } 5129 5130 if (mlme->data == DEAUTH_RX_EVENT || mlme->data == DEAUTH_TX_EVENT) { 5131 iwl_dbg_tlv_time_point(&mvm->fwrt, 5132 IWL_FW_INI_TIME_POINT_DEASSOC, 5133 NULL); 5134 return; 5135 } 5136 } 5137 5138 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm, 5139 struct ieee80211_vif *vif, 5140 const struct ieee80211_event *event) 5141 { 5142 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \ 5143 do { \ 5144 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \ 5145 break; \ 5146 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt); \ 5147 } while (0) 5148 5149 struct iwl_fw_dbg_trigger_tlv *trig; 5150 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 5151 5152 if (iwl_trans_dbg_ini_valid(mvm->trans)) { 5153 iwl_mvm_event_mlme_callback_ini(mvm, vif, &event->u.mlme); 5154 return; 5155 } 5156 5157 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 5158 FW_DBG_TRIGGER_MLME); 5159 if (!trig) 5160 return; 5161 5162 trig_mlme = (void *)trig->data; 5163 5164 if (event->u.mlme.data == ASSOC_EVENT) { 5165 if (event->u.mlme.status == MLME_DENIED) 5166 CHECK_MLME_TRIGGER(stop_assoc_denied, 5167 "DENIED ASSOC: reason %d", 5168 event->u.mlme.reason); 5169 else if (event->u.mlme.status == MLME_TIMEOUT) 5170 CHECK_MLME_TRIGGER(stop_assoc_timeout, 5171 "ASSOC TIMEOUT"); 5172 } else if (event->u.mlme.data == AUTH_EVENT) { 5173 if (event->u.mlme.status == MLME_DENIED) 5174 CHECK_MLME_TRIGGER(stop_auth_denied, 5175 "DENIED AUTH: reason %d", 5176 event->u.mlme.reason); 5177 else if (event->u.mlme.status == MLME_TIMEOUT) 5178 CHECK_MLME_TRIGGER(stop_auth_timeout, 5179 "AUTH TIMEOUT"); 5180 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) { 5181 CHECK_MLME_TRIGGER(stop_rx_deauth, 5182 "DEAUTH RX %d", event->u.mlme.reason); 5183 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) { 5184 CHECK_MLME_TRIGGER(stop_tx_deauth, 5185 "DEAUTH TX %d", event->u.mlme.reason); 5186 } 5187 #undef CHECK_MLME_TRIGGER 5188 } 5189 5190 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm, 5191 struct ieee80211_vif *vif, 5192 const struct ieee80211_event *event) 5193 { 5194 struct iwl_fw_dbg_trigger_tlv *trig; 5195 struct iwl_fw_dbg_trigger_ba *ba_trig; 5196 5197 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 5198 FW_DBG_TRIGGER_BA); 5199 if (!trig) 5200 return; 5201 5202 ba_trig = (void *)trig->data; 5203 5204 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid))) 5205 return; 5206 5207 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 5208 "BAR received from %pM, tid %d, ssn %d", 5209 event->u.ba.sta->addr, event->u.ba.tid, 5210 event->u.ba.ssn); 5211 } 5212 5213 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw, 5214 struct ieee80211_vif *vif, 5215 const struct ieee80211_event *event) 5216 { 5217 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5218 5219 switch (event->type) { 5220 case MLME_EVENT: 5221 iwl_mvm_event_mlme_callback(mvm, vif, event); 5222 break; 5223 case BAR_RX_EVENT: 5224 iwl_mvm_event_bar_rx_callback(mvm, vif, event); 5225 break; 5226 case BA_FRAME_TIMEOUT: 5227 iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta, 5228 event->u.ba.tid); 5229 break; 5230 default: 5231 break; 5232 } 5233 } 5234 5235 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm, 5236 enum iwl_mvm_rxq_notif_type type, 5237 bool sync, 5238 const void *data, u32 size) 5239 { 5240 struct { 5241 struct iwl_rxq_sync_cmd cmd; 5242 struct iwl_mvm_internal_rxq_notif notif; 5243 } __packed cmd = { 5244 .cmd.rxq_mask = cpu_to_le32(BIT(mvm->trans->num_rx_queues) - 1), 5245 .cmd.count = 5246 cpu_to_le32(sizeof(struct iwl_mvm_internal_rxq_notif) + 5247 size), 5248 .notif.type = type, 5249 .notif.sync = sync, 5250 }; 5251 struct iwl_host_cmd hcmd = { 5252 .id = WIDE_ID(DATA_PATH_GROUP, TRIGGER_RX_QUEUES_NOTIF_CMD), 5253 .data[0] = &cmd, 5254 .len[0] = sizeof(cmd), 5255 .data[1] = data, 5256 .len[1] = size, 5257 .flags = sync ? 0 : CMD_ASYNC, 5258 }; 5259 int ret; 5260 5261 /* size must be a multiple of DWORD */ 5262 if (WARN_ON(cmd.cmd.count & cpu_to_le32(3))) 5263 return; 5264 5265 if (!iwl_mvm_has_new_rx_api(mvm)) 5266 return; 5267 5268 if (sync) { 5269 cmd.notif.cookie = mvm->queue_sync_cookie; 5270 mvm->queue_sync_state = (1 << mvm->trans->num_rx_queues) - 1; 5271 } 5272 5273 ret = iwl_mvm_send_cmd(mvm, &hcmd); 5274 if (ret) { 5275 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret); 5276 goto out; 5277 } 5278 5279 if (sync) { 5280 lockdep_assert_held(&mvm->mutex); 5281 ret = wait_event_timeout(mvm->rx_sync_waitq, 5282 READ_ONCE(mvm->queue_sync_state) == 0 || 5283 iwl_mvm_is_radio_killed(mvm), 5284 HZ); 5285 WARN_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm), 5286 "queue sync: failed to sync, state is 0x%lx\n", 5287 mvm->queue_sync_state); 5288 } 5289 5290 out: 5291 if (sync) { 5292 mvm->queue_sync_state = 0; 5293 mvm->queue_sync_cookie++; 5294 } 5295 } 5296 5297 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw) 5298 { 5299 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5300 5301 mutex_lock(&mvm->mutex); 5302 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_EMPTY, true, NULL, 0); 5303 mutex_unlock(&mvm->mutex); 5304 } 5305 5306 static int 5307 iwl_mvm_mac_get_ftm_responder_stats(struct ieee80211_hw *hw, 5308 struct ieee80211_vif *vif, 5309 struct cfg80211_ftm_responder_stats *stats) 5310 { 5311 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5312 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 5313 5314 if (vif->p2p || vif->type != NL80211_IFTYPE_AP || 5315 !mvmvif->ap_ibss_active || !vif->bss_conf.ftm_responder) 5316 return -EINVAL; 5317 5318 mutex_lock(&mvm->mutex); 5319 *stats = mvm->ftm_resp_stats; 5320 mutex_unlock(&mvm->mutex); 5321 5322 stats->filled = BIT(NL80211_FTM_STATS_SUCCESS_NUM) | 5323 BIT(NL80211_FTM_STATS_PARTIAL_NUM) | 5324 BIT(NL80211_FTM_STATS_FAILED_NUM) | 5325 BIT(NL80211_FTM_STATS_ASAP_NUM) | 5326 BIT(NL80211_FTM_STATS_NON_ASAP_NUM) | 5327 BIT(NL80211_FTM_STATS_TOTAL_DURATION_MSEC) | 5328 BIT(NL80211_FTM_STATS_UNKNOWN_TRIGGERS_NUM) | 5329 BIT(NL80211_FTM_STATS_RESCHEDULE_REQUESTS_NUM) | 5330 BIT(NL80211_FTM_STATS_OUT_OF_WINDOW_TRIGGERS_NUM); 5331 5332 return 0; 5333 } 5334 5335 static int iwl_mvm_start_pmsr(struct ieee80211_hw *hw, 5336 struct ieee80211_vif *vif, 5337 struct cfg80211_pmsr_request *request) 5338 { 5339 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5340 int ret; 5341 5342 mutex_lock(&mvm->mutex); 5343 ret = iwl_mvm_ftm_start(mvm, vif, request); 5344 mutex_unlock(&mvm->mutex); 5345 5346 return ret; 5347 } 5348 5349 static void iwl_mvm_abort_pmsr(struct ieee80211_hw *hw, 5350 struct ieee80211_vif *vif, 5351 struct cfg80211_pmsr_request *request) 5352 { 5353 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5354 5355 mutex_lock(&mvm->mutex); 5356 iwl_mvm_ftm_abort(mvm, request); 5357 mutex_unlock(&mvm->mutex); 5358 } 5359 5360 static bool iwl_mvm_can_hw_csum(struct sk_buff *skb) 5361 { 5362 u8 protocol = ip_hdr(skb)->protocol; 5363 5364 if (!IS_ENABLED(CONFIG_INET)) 5365 return false; 5366 5367 return protocol == IPPROTO_TCP || protocol == IPPROTO_UDP; 5368 } 5369 5370 static bool iwl_mvm_mac_can_aggregate(struct ieee80211_hw *hw, 5371 struct sk_buff *head, 5372 struct sk_buff *skb) 5373 { 5374 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5375 5376 /* For now don't aggregate IPv6 in AMSDU */ 5377 if (skb->protocol != htons(ETH_P_IP)) 5378 return false; 5379 5380 if (!iwl_mvm_is_csum_supported(mvm)) 5381 return true; 5382 5383 return iwl_mvm_can_hw_csum(skb) == iwl_mvm_can_hw_csum(head); 5384 } 5385 5386 const struct ieee80211_ops iwl_mvm_hw_ops = { 5387 .tx = iwl_mvm_mac_tx, 5388 .wake_tx_queue = iwl_mvm_mac_wake_tx_queue, 5389 .ampdu_action = iwl_mvm_mac_ampdu_action, 5390 .get_antenna = iwl_mvm_op_get_antenna, 5391 .start = iwl_mvm_mac_start, 5392 .reconfig_complete = iwl_mvm_mac_reconfig_complete, 5393 .stop = iwl_mvm_mac_stop, 5394 .add_interface = iwl_mvm_mac_add_interface, 5395 .remove_interface = iwl_mvm_mac_remove_interface, 5396 .config = iwl_mvm_mac_config, 5397 .prepare_multicast = iwl_mvm_prepare_multicast, 5398 .configure_filter = iwl_mvm_configure_filter, 5399 .config_iface_filter = iwl_mvm_config_iface_filter, 5400 .bss_info_changed = iwl_mvm_bss_info_changed, 5401 .hw_scan = iwl_mvm_mac_hw_scan, 5402 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan, 5403 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove, 5404 .sta_state = iwl_mvm_mac_sta_state, 5405 .sta_notify = iwl_mvm_mac_sta_notify, 5406 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames, 5407 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames, 5408 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold, 5409 .sta_rc_update = iwl_mvm_sta_rc_update, 5410 .conf_tx = iwl_mvm_mac_conf_tx, 5411 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx, 5412 .mgd_complete_tx = iwl_mvm_mac_mgd_complete_tx, 5413 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover, 5414 .flush = iwl_mvm_mac_flush, 5415 .sched_scan_start = iwl_mvm_mac_sched_scan_start, 5416 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop, 5417 .set_key = iwl_mvm_mac_set_key, 5418 .update_tkip_key = iwl_mvm_mac_update_tkip_key, 5419 .remain_on_channel = iwl_mvm_roc, 5420 .cancel_remain_on_channel = iwl_mvm_cancel_roc, 5421 .add_chanctx = iwl_mvm_add_chanctx, 5422 .remove_chanctx = iwl_mvm_remove_chanctx, 5423 .change_chanctx = iwl_mvm_change_chanctx, 5424 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx, 5425 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx, 5426 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx, 5427 5428 .start_ap = iwl_mvm_start_ap_ibss, 5429 .stop_ap = iwl_mvm_stop_ap_ibss, 5430 .join_ibss = iwl_mvm_start_ap_ibss, 5431 .leave_ibss = iwl_mvm_stop_ap_ibss, 5432 5433 .tx_last_beacon = iwl_mvm_tx_last_beacon, 5434 5435 .set_tim = iwl_mvm_set_tim, 5436 5437 .channel_switch = iwl_mvm_channel_switch, 5438 .pre_channel_switch = iwl_mvm_pre_channel_switch, 5439 .post_channel_switch = iwl_mvm_post_channel_switch, 5440 .abort_channel_switch = iwl_mvm_abort_channel_switch, 5441 .channel_switch_rx_beacon = iwl_mvm_channel_switch_rx_beacon, 5442 5443 .tdls_channel_switch = iwl_mvm_tdls_channel_switch, 5444 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch, 5445 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch, 5446 5447 .event_callback = iwl_mvm_mac_event_callback, 5448 5449 .sync_rx_queues = iwl_mvm_sync_rx_queues, 5450 5451 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd) 5452 5453 #ifdef CONFIG_PM_SLEEP 5454 /* look at d3.c */ 5455 .suspend = iwl_mvm_suspend, 5456 .resume = iwl_mvm_resume, 5457 .set_wakeup = iwl_mvm_set_wakeup, 5458 .set_rekey_data = iwl_mvm_set_rekey_data, 5459 #if IS_ENABLED(CONFIG_IPV6) 5460 .ipv6_addr_change = iwl_mvm_ipv6_addr_change, 5461 #endif 5462 .set_default_unicast_key = iwl_mvm_set_default_unicast_key, 5463 #endif 5464 .get_survey = iwl_mvm_mac_get_survey, 5465 .sta_statistics = iwl_mvm_mac_sta_statistics, 5466 .get_ftm_responder_stats = iwl_mvm_mac_get_ftm_responder_stats, 5467 .start_pmsr = iwl_mvm_start_pmsr, 5468 .abort_pmsr = iwl_mvm_abort_pmsr, 5469 5470 .can_aggregate_in_amsdu = iwl_mvm_mac_can_aggregate, 5471 #ifdef CONFIG_IWLWIFI_DEBUGFS 5472 .sta_add_debugfs = iwl_mvm_sta_add_debugfs, 5473 #endif 5474 }; 5475