1 /****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 11 * Copyright(c) 2018 - 2019 Intel Corporation 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of version 2 of the GNU General Public License as 15 * published by the Free Software Foundation. 16 * 17 * This program is distributed in the hope that it will be useful, but 18 * WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 20 * General Public License for more details. 21 * 22 * The full GNU General Public License is included in this distribution 23 * in the file called COPYING. 24 * 25 * Contact Information: 26 * Intel Linux Wireless <linuxwifi@intel.com> 27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 28 * 29 * BSD LICENSE 30 * 31 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 32 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 33 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 34 * Copyright(c) 2018 - 2019 Intel Corporation 35 * All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 41 * * Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * * Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in 45 * the documentation and/or other materials provided with the 46 * distribution. 47 * * Neither the name Intel Corporation nor the names of its 48 * contributors may be used to endorse or promote products derived 49 * from this software without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 52 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 53 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 54 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 55 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 * 63 *****************************************************************************/ 64 #include <linux/kernel.h> 65 #include <linux/slab.h> 66 #include <linux/skbuff.h> 67 #include <linux/netdevice.h> 68 #include <linux/etherdevice.h> 69 #include <linux/ip.h> 70 #include <linux/if_arp.h> 71 #include <linux/time.h> 72 #include <net/mac80211.h> 73 #include <net/ieee80211_radiotap.h> 74 #include <net/tcp.h> 75 76 #include "iwl-op-mode.h" 77 #include "iwl-io.h" 78 #include "mvm.h" 79 #include "sta.h" 80 #include "time-event.h" 81 #include "iwl-eeprom-parse.h" 82 #include "iwl-phy-db.h" 83 #include "testmode.h" 84 #include "fw/error-dump.h" 85 #include "iwl-prph.h" 86 #include "iwl-nvm-parse.h" 87 88 static const struct ieee80211_iface_limit iwl_mvm_limits[] = { 89 { 90 .max = 1, 91 .types = BIT(NL80211_IFTYPE_STATION), 92 }, 93 { 94 .max = 1, 95 .types = BIT(NL80211_IFTYPE_AP) | 96 BIT(NL80211_IFTYPE_P2P_CLIENT) | 97 BIT(NL80211_IFTYPE_P2P_GO), 98 }, 99 { 100 .max = 1, 101 .types = BIT(NL80211_IFTYPE_P2P_DEVICE), 102 }, 103 }; 104 105 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = { 106 { 107 .num_different_channels = 2, 108 .max_interfaces = 3, 109 .limits = iwl_mvm_limits, 110 .n_limits = ARRAY_SIZE(iwl_mvm_limits), 111 }, 112 }; 113 114 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 115 /* 116 * Use the reserved field to indicate magic values. 117 * these values will only be used internally by the driver, 118 * and won't make it to the fw (reserved will be 0). 119 * BC_FILTER_MAGIC_IP - configure the val of this attribute to 120 * be the vif's ip address. in case there is not a single 121 * ip address (0, or more than 1), this attribute will 122 * be skipped. 123 * BC_FILTER_MAGIC_MAC - set the val of this attribute to 124 * the LSB bytes of the vif's mac address 125 */ 126 enum { 127 BC_FILTER_MAGIC_NONE = 0, 128 BC_FILTER_MAGIC_IP, 129 BC_FILTER_MAGIC_MAC, 130 }; 131 132 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = { 133 { 134 /* arp */ 135 .discard = 0, 136 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL, 137 .attrs = { 138 { 139 /* frame type - arp, hw type - ethernet */ 140 .offset_type = 141 BCAST_FILTER_OFFSET_PAYLOAD_START, 142 .offset = sizeof(rfc1042_header), 143 .val = cpu_to_be32(0x08060001), 144 .mask = cpu_to_be32(0xffffffff), 145 }, 146 { 147 /* arp dest ip */ 148 .offset_type = 149 BCAST_FILTER_OFFSET_PAYLOAD_START, 150 .offset = sizeof(rfc1042_header) + 2 + 151 sizeof(struct arphdr) + 152 ETH_ALEN + sizeof(__be32) + 153 ETH_ALEN, 154 .mask = cpu_to_be32(0xffffffff), 155 /* mark it as special field */ 156 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP), 157 }, 158 }, 159 }, 160 { 161 /* dhcp offer bcast */ 162 .discard = 0, 163 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4, 164 .attrs = { 165 { 166 /* udp dest port - 68 (bootp client)*/ 167 .offset_type = BCAST_FILTER_OFFSET_IP_END, 168 .offset = offsetof(struct udphdr, dest), 169 .val = cpu_to_be32(0x00440000), 170 .mask = cpu_to_be32(0xffff0000), 171 }, 172 { 173 /* dhcp - lsb bytes of client hw address */ 174 .offset_type = BCAST_FILTER_OFFSET_IP_END, 175 .offset = 38, 176 .mask = cpu_to_be32(0xffffffff), 177 /* mark it as special field */ 178 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC), 179 }, 180 }, 181 }, 182 /* last filter must be empty */ 183 {}, 184 }; 185 #endif 186 187 static const struct cfg80211_pmsr_capabilities iwl_mvm_pmsr_capa = { 188 .max_peers = IWL_MVM_TOF_MAX_APS, 189 .report_ap_tsf = 1, 190 .randomize_mac_addr = 1, 191 192 .ftm = { 193 .supported = 1, 194 .asap = 1, 195 .non_asap = 1, 196 .request_lci = 1, 197 .request_civicloc = 1, 198 .max_bursts_exponent = -1, /* all supported */ 199 .max_ftms_per_burst = 0, /* no limits */ 200 .bandwidths = BIT(NL80211_CHAN_WIDTH_20_NOHT) | 201 BIT(NL80211_CHAN_WIDTH_20) | 202 BIT(NL80211_CHAN_WIDTH_40) | 203 BIT(NL80211_CHAN_WIDTH_80), 204 .preambles = BIT(NL80211_PREAMBLE_LEGACY) | 205 BIT(NL80211_PREAMBLE_HT) | 206 BIT(NL80211_PREAMBLE_VHT), 207 }, 208 }; 209 210 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 211 enum set_key_cmd cmd, 212 struct ieee80211_vif *vif, 213 struct ieee80211_sta *sta, 214 struct ieee80211_key_conf *key); 215 216 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm) 217 { 218 int i; 219 220 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts)); 221 for (i = 0; i < NUM_PHY_CTX; i++) { 222 mvm->phy_ctxts[i].id = i; 223 mvm->phy_ctxts[i].ref = 0; 224 } 225 } 226 227 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy, 228 const char *alpha2, 229 enum iwl_mcc_source src_id, 230 bool *changed) 231 { 232 struct ieee80211_regdomain *regd = NULL; 233 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 234 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 235 struct iwl_mcc_update_resp *resp; 236 237 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2); 238 239 lockdep_assert_held(&mvm->mutex); 240 241 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id); 242 if (IS_ERR_OR_NULL(resp)) { 243 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n", 244 PTR_ERR_OR_ZERO(resp)); 245 goto out; 246 } 247 248 if (changed) { 249 u32 status = le32_to_cpu(resp->status); 250 251 *changed = (status == MCC_RESP_NEW_CHAN_PROFILE || 252 status == MCC_RESP_ILLEGAL); 253 } 254 255 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg, 256 __le32_to_cpu(resp->n_channels), 257 resp->channels, 258 __le16_to_cpu(resp->mcc), 259 __le16_to_cpu(resp->geo_info)); 260 /* Store the return source id */ 261 src_id = resp->source_id; 262 kfree(resp); 263 if (IS_ERR_OR_NULL(regd)) { 264 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n", 265 PTR_ERR_OR_ZERO(regd)); 266 goto out; 267 } 268 269 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n", 270 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id); 271 mvm->lar_regdom_set = true; 272 mvm->mcc_src = src_id; 273 274 out: 275 return regd; 276 } 277 278 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm) 279 { 280 bool changed; 281 struct ieee80211_regdomain *regd; 282 283 if (!iwl_mvm_is_lar_supported(mvm)) 284 return; 285 286 regd = iwl_mvm_get_current_regdomain(mvm, &changed); 287 if (!IS_ERR_OR_NULL(regd)) { 288 /* only update the regulatory core if changed */ 289 if (changed) 290 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd); 291 292 kfree(regd); 293 } 294 } 295 296 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm, 297 bool *changed) 298 { 299 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ", 300 iwl_mvm_is_wifi_mcc_supported(mvm) ? 301 MCC_SOURCE_GET_CURRENT : 302 MCC_SOURCE_OLD_FW, changed); 303 } 304 305 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm) 306 { 307 enum iwl_mcc_source used_src; 308 struct ieee80211_regdomain *regd; 309 int ret; 310 bool changed; 311 const struct ieee80211_regdomain *r = 312 rtnl_dereference(mvm->hw->wiphy->regd); 313 314 if (!r) 315 return -ENOENT; 316 317 /* save the last source in case we overwrite it below */ 318 used_src = mvm->mcc_src; 319 if (iwl_mvm_is_wifi_mcc_supported(mvm)) { 320 /* Notify the firmware we support wifi location updates */ 321 regd = iwl_mvm_get_current_regdomain(mvm, NULL); 322 if (!IS_ERR_OR_NULL(regd)) 323 kfree(regd); 324 } 325 326 /* Now set our last stored MCC and source */ 327 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src, 328 &changed); 329 if (IS_ERR_OR_NULL(regd)) 330 return -EIO; 331 332 /* update cfg80211 if the regdomain was changed */ 333 if (changed) 334 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd); 335 else 336 ret = 0; 337 338 kfree(regd); 339 return ret; 340 } 341 342 static const u8 he_if_types_ext_capa_sta[] = { 343 [0] = WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING, 344 [2] = WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT, 345 [7] = WLAN_EXT_CAPA8_OPMODE_NOTIF, 346 [9] = WLAN_EXT_CAPA10_TWT_REQUESTER_SUPPORT, 347 }; 348 349 static const struct wiphy_iftype_ext_capab he_iftypes_ext_capa[] = { 350 { 351 .iftype = NL80211_IFTYPE_STATION, 352 .extended_capabilities = he_if_types_ext_capa_sta, 353 .extended_capabilities_mask = he_if_types_ext_capa_sta, 354 .extended_capabilities_len = sizeof(he_if_types_ext_capa_sta), 355 }, 356 }; 357 358 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) 359 { 360 struct ieee80211_hw *hw = mvm->hw; 361 int num_mac, ret, i; 362 static const u32 mvm_ciphers[] = { 363 WLAN_CIPHER_SUITE_WEP40, 364 WLAN_CIPHER_SUITE_WEP104, 365 WLAN_CIPHER_SUITE_TKIP, 366 WLAN_CIPHER_SUITE_CCMP, 367 }; 368 #ifdef CONFIG_PM_SLEEP 369 bool unified = fw_has_capa(&mvm->fw->ucode_capa, 370 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 371 #endif 372 373 /* Tell mac80211 our characteristics */ 374 ieee80211_hw_set(hw, SIGNAL_DBM); 375 ieee80211_hw_set(hw, SPECTRUM_MGMT); 376 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 377 ieee80211_hw_set(hw, WANT_MONITOR_VIF); 378 ieee80211_hw_set(hw, SUPPORTS_PS); 379 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 380 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 381 ieee80211_hw_set(hw, TIMING_BEACON_ONLY); 382 ieee80211_hw_set(hw, CONNECTION_MONITOR); 383 ieee80211_hw_set(hw, CHANCTX_STA_CSA); 384 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); 385 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS); 386 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU); 387 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR); 388 ieee80211_hw_set(hw, DEAUTH_NEED_MGD_TX_PREP); 389 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW); 390 ieee80211_hw_set(hw, BUFF_MMPDU_TXQ); 391 ieee80211_hw_set(hw, STA_MMPDU_TXQ); 392 /* 393 * On older devices, enabling TX A-MSDU occasionally leads to 394 * something getting messed up, the command read from the FIFO 395 * gets out of sync and isn't a TX command, so that we have an 396 * assert EDC. 397 * 398 * It's not clear where the bug is, but since we didn't used to 399 * support A-MSDU until moving the mac80211 iTXQs, just leave it 400 * for older devices. We also don't see this issue on any newer 401 * devices. 402 */ 403 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_9000) 404 ieee80211_hw_set(hw, TX_AMSDU); 405 ieee80211_hw_set(hw, TX_FRAG_LIST); 406 407 if (iwl_mvm_has_tlc_offload(mvm)) { 408 ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW); 409 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 410 } 411 412 if (iwl_mvm_has_new_rx_api(mvm)) 413 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER); 414 415 if (fw_has_capa(&mvm->fw->ucode_capa, 416 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) { 417 ieee80211_hw_set(hw, AP_LINK_PS); 418 } else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) { 419 /* 420 * we absolutely need this for the new TX API since that comes 421 * with many more queues than the current code can deal with 422 * for station powersave 423 */ 424 return -EINVAL; 425 } 426 427 if (mvm->trans->num_rx_queues > 1) 428 ieee80211_hw_set(hw, USES_RSS); 429 430 if (mvm->trans->max_skb_frags) 431 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG; 432 433 hw->queues = IEEE80211_MAX_QUEUES; 434 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE; 435 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC | 436 IEEE80211_RADIOTAP_MCS_HAVE_STBC; 437 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC | 438 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED; 439 440 hw->radiotap_timestamp.units_pos = 441 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US | 442 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ; 443 /* this is the case for CCK frames, it's better (only 8) for OFDM */ 444 hw->radiotap_timestamp.accuracy = 22; 445 446 if (!iwl_mvm_has_tlc_offload(mvm)) 447 hw->rate_control_algorithm = RS_NAME; 448 449 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES; 450 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP; 451 hw->max_tx_fragments = mvm->trans->max_skb_frags; 452 453 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6); 454 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers)); 455 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers); 456 hw->wiphy->cipher_suites = mvm->ciphers; 457 458 if (iwl_mvm_has_new_rx_api(mvm)) { 459 mvm->ciphers[hw->wiphy->n_cipher_suites] = 460 WLAN_CIPHER_SUITE_GCMP; 461 hw->wiphy->n_cipher_suites++; 462 mvm->ciphers[hw->wiphy->n_cipher_suites] = 463 WLAN_CIPHER_SUITE_GCMP_256; 464 hw->wiphy->n_cipher_suites++; 465 } 466 467 /* Enable 11w if software crypto is not enabled (as the 468 * firmware will interpret some mgmt packets, so enabling it 469 * with software crypto isn't safe). 470 */ 471 if (!iwlwifi_mod_params.swcrypto) { 472 ieee80211_hw_set(hw, MFP_CAPABLE); 473 mvm->ciphers[hw->wiphy->n_cipher_suites] = 474 WLAN_CIPHER_SUITE_AES_CMAC; 475 hw->wiphy->n_cipher_suites++; 476 if (iwl_mvm_has_new_rx_api(mvm)) { 477 mvm->ciphers[hw->wiphy->n_cipher_suites] = 478 WLAN_CIPHER_SUITE_BIP_GMAC_128; 479 hw->wiphy->n_cipher_suites++; 480 mvm->ciphers[hw->wiphy->n_cipher_suites] = 481 WLAN_CIPHER_SUITE_BIP_GMAC_256; 482 hw->wiphy->n_cipher_suites++; 483 } 484 } 485 486 /* currently FW API supports only one optional cipher scheme */ 487 if (mvm->fw->cs[0].cipher) { 488 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0]; 489 struct ieee80211_cipher_scheme *cs = &mvm->cs[0]; 490 491 mvm->hw->n_cipher_schemes = 1; 492 493 cs->cipher = le32_to_cpu(fwcs->cipher); 494 cs->iftype = BIT(NL80211_IFTYPE_STATION); 495 cs->hdr_len = fwcs->hdr_len; 496 cs->pn_len = fwcs->pn_len; 497 cs->pn_off = fwcs->pn_off; 498 cs->key_idx_off = fwcs->key_idx_off; 499 cs->key_idx_mask = fwcs->key_idx_mask; 500 cs->key_idx_shift = fwcs->key_idx_shift; 501 cs->mic_len = fwcs->mic_len; 502 503 mvm->hw->cipher_schemes = mvm->cs; 504 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher; 505 hw->wiphy->n_cipher_suites++; 506 } 507 508 if (fw_has_capa(&mvm->fw->ucode_capa, 509 IWL_UCODE_TLV_CAPA_FTM_CALIBRATED)) { 510 wiphy_ext_feature_set(hw->wiphy, 511 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER); 512 hw->wiphy->pmsr_capa = &iwl_mvm_pmsr_capa; 513 } 514 515 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS); 516 hw->wiphy->features |= 517 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR | 518 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR | 519 NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 520 521 hw->sta_data_size = sizeof(struct iwl_mvm_sta); 522 hw->vif_data_size = sizeof(struct iwl_mvm_vif); 523 hw->chanctx_data_size = sizeof(u16); 524 hw->txq_data_size = sizeof(struct iwl_mvm_txq); 525 526 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 527 BIT(NL80211_IFTYPE_P2P_CLIENT) | 528 BIT(NL80211_IFTYPE_AP) | 529 BIT(NL80211_IFTYPE_P2P_GO) | 530 BIT(NL80211_IFTYPE_P2P_DEVICE) | 531 BIT(NL80211_IFTYPE_ADHOC); 532 533 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; 534 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS); 535 hw->wiphy->features |= NL80211_FEATURE_HT_IBSS; 536 537 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR; 538 if (iwl_mvm_is_lar_supported(mvm)) 539 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED; 540 else 541 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | 542 REGULATORY_DISABLE_BEACON_HINTS; 543 544 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; 545 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; 546 547 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations; 548 hw->wiphy->n_iface_combinations = 549 ARRAY_SIZE(iwl_mvm_iface_combinations); 550 551 hw->wiphy->max_remain_on_channel_duration = 10000; 552 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; 553 554 /* Extract MAC address */ 555 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN); 556 hw->wiphy->addresses = mvm->addresses; 557 hw->wiphy->n_addresses = 1; 558 559 /* Extract additional MAC addresses if available */ 560 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ? 561 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1; 562 563 for (i = 1; i < num_mac; i++) { 564 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr, 565 ETH_ALEN); 566 mvm->addresses[i].addr[5]++; 567 hw->wiphy->n_addresses++; 568 } 569 570 iwl_mvm_reset_phy_ctxts(mvm); 571 572 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm); 573 574 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; 575 576 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK); 577 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) || 578 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK)); 579 580 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 581 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS; 582 else 583 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS; 584 585 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels) 586 hw->wiphy->bands[NL80211_BAND_2GHZ] = 587 &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 588 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) { 589 hw->wiphy->bands[NL80211_BAND_5GHZ] = 590 &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 591 592 if (fw_has_capa(&mvm->fw->ucode_capa, 593 IWL_UCODE_TLV_CAPA_BEAMFORMER) && 594 fw_has_api(&mvm->fw->ucode_capa, 595 IWL_UCODE_TLV_API_LQ_SS_PARAMS)) 596 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |= 597 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE; 598 } 599 600 hw->wiphy->hw_version = mvm->trans->hw_id; 601 602 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 603 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; 604 else 605 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; 606 607 hw->wiphy->max_sched_scan_reqs = 1; 608 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX; 609 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES; 610 /* we create the 802.11 header and zero length SSID IE. */ 611 hw->wiphy->max_sched_scan_ie_len = 612 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2; 613 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS; 614 hw->wiphy->max_sched_scan_plan_interval = U16_MAX; 615 616 /* 617 * the firmware uses u8 for num of iterations, but 0xff is saved for 618 * infinite loop, so the maximum number of iterations is actually 254. 619 */ 620 hw->wiphy->max_sched_scan_plan_iterations = 254; 621 622 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN | 623 NL80211_FEATURE_LOW_PRIORITY_SCAN | 624 NL80211_FEATURE_P2P_GO_OPPPS | 625 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | 626 NL80211_FEATURE_DYNAMIC_SMPS | 627 NL80211_FEATURE_STATIC_SMPS | 628 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION; 629 630 if (fw_has_capa(&mvm->fw->ucode_capa, 631 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)) 632 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION; 633 if (fw_has_capa(&mvm->fw->ucode_capa, 634 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)) 635 hw->wiphy->features |= NL80211_FEATURE_QUIET; 636 637 if (fw_has_capa(&mvm->fw->ucode_capa, 638 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) 639 hw->wiphy->features |= 640 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES; 641 642 if (fw_has_capa(&mvm->fw->ucode_capa, 643 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 644 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES; 645 646 if (fw_has_api(&mvm->fw->ucode_capa, 647 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) { 648 wiphy_ext_feature_set(hw->wiphy, 649 NL80211_EXT_FEATURE_SCAN_START_TIME); 650 wiphy_ext_feature_set(hw->wiphy, 651 NL80211_EXT_FEATURE_BSS_PARENT_TSF); 652 wiphy_ext_feature_set(hw->wiphy, 653 NL80211_EXT_FEATURE_SET_SCAN_DWELL); 654 } 655 656 if (iwl_mvm_is_oce_supported(mvm)) { 657 wiphy_ext_feature_set(hw->wiphy, 658 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP); 659 wiphy_ext_feature_set(hw->wiphy, 660 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME); 661 wiphy_ext_feature_set(hw->wiphy, 662 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION); 663 wiphy_ext_feature_set(hw->wiphy, 664 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE); 665 } 666 667 if (mvm->nvm_data->sku_cap_11ax_enable && 668 !iwlwifi_mod_params.disable_11ax) { 669 hw->wiphy->iftype_ext_capab = he_iftypes_ext_capa; 670 hw->wiphy->num_iftype_ext_capab = 671 ARRAY_SIZE(he_iftypes_ext_capa); 672 673 ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID); 674 ieee80211_hw_set(hw, SUPPORTS_ONLY_HE_MULTI_BSSID); 675 } 676 677 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; 678 679 #ifdef CONFIG_PM_SLEEP 680 if ((unified || mvm->fw->img[IWL_UCODE_WOWLAN].num_sec) && 681 mvm->trans->ops->d3_suspend && 682 mvm->trans->ops->d3_resume && 683 device_can_wakeup(mvm->trans->dev)) { 684 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT | 685 WIPHY_WOWLAN_DISCONNECT | 686 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 687 WIPHY_WOWLAN_RFKILL_RELEASE | 688 WIPHY_WOWLAN_NET_DETECT; 689 if (!iwlwifi_mod_params.swcrypto) 690 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 691 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 692 WIPHY_WOWLAN_4WAY_HANDSHAKE; 693 694 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS; 695 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN; 696 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN; 697 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES; 698 hw->wiphy->wowlan = &mvm->wowlan; 699 } 700 #endif 701 702 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 703 /* assign default bcast filtering configuration */ 704 mvm->bcast_filters = iwl_mvm_default_bcast_filters; 705 #endif 706 707 ret = iwl_mvm_leds_init(mvm); 708 if (ret) 709 return ret; 710 711 if (fw_has_capa(&mvm->fw->ucode_capa, 712 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) { 713 IWL_DEBUG_TDLS(mvm, "TDLS supported\n"); 714 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS; 715 ieee80211_hw_set(hw, TDLS_WIDER_BW); 716 } 717 718 if (fw_has_capa(&mvm->fw->ucode_capa, 719 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) { 720 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n"); 721 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH; 722 } 723 724 hw->netdev_features |= mvm->cfg->features; 725 if (!iwl_mvm_is_csum_supported(mvm)) { 726 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS | 727 NETIF_F_RXCSUM); 728 /* We may support SW TX CSUM */ 729 if (IWL_MVM_SW_TX_CSUM_OFFLOAD) 730 hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS; 731 } 732 733 if (mvm->cfg->vht_mu_mimo_supported) 734 wiphy_ext_feature_set(hw->wiphy, 735 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER); 736 737 ret = ieee80211_register_hw(mvm->hw); 738 if (ret) { 739 iwl_mvm_leds_exit(mvm); 740 } 741 742 return ret; 743 } 744 745 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw, 746 struct ieee80211_tx_control *control, 747 struct sk_buff *skb) 748 { 749 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 750 struct ieee80211_sta *sta = control->sta; 751 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 752 struct ieee80211_hdr *hdr = (void *)skb->data; 753 bool offchannel = IEEE80211_SKB_CB(skb)->flags & 754 IEEE80211_TX_CTL_TX_OFFCHAN; 755 756 if (iwl_mvm_is_radio_killed(mvm)) { 757 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n"); 758 goto drop; 759 } 760 761 if (offchannel && 762 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) && 763 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status)) 764 goto drop; 765 766 /* treat non-bufferable MMPDUs on AP interfaces as broadcast */ 767 if ((info->control.vif->type == NL80211_IFTYPE_AP || 768 info->control.vif->type == NL80211_IFTYPE_ADHOC) && 769 ieee80211_is_mgmt(hdr->frame_control) && 770 !ieee80211_is_bufferable_mmpdu(hdr->frame_control)) 771 sta = NULL; 772 773 /* If there is no sta, and it's not offchannel - send through AP */ 774 if (!sta && info->control.vif->type == NL80211_IFTYPE_STATION && 775 !offchannel) { 776 struct iwl_mvm_vif *mvmvif = 777 iwl_mvm_vif_from_mac80211(info->control.vif); 778 u8 ap_sta_id = READ_ONCE(mvmvif->ap_sta_id); 779 780 if (ap_sta_id < IWL_MVM_STATION_COUNT) { 781 /* mac80211 holds rcu read lock */ 782 sta = rcu_dereference(mvm->fw_id_to_mac_id[ap_sta_id]); 783 if (IS_ERR_OR_NULL(sta)) 784 goto drop; 785 } 786 } 787 788 if (sta) { 789 if (iwl_mvm_tx_skb(mvm, skb, sta)) 790 goto drop; 791 return; 792 } 793 794 if (iwl_mvm_tx_skb_non_sta(mvm, skb)) 795 goto drop; 796 return; 797 drop: 798 ieee80211_free_txskb(hw, skb); 799 } 800 801 void iwl_mvm_mac_itxq_xmit(struct ieee80211_hw *hw, struct ieee80211_txq *txq) 802 { 803 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 804 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq); 805 struct sk_buff *skb = NULL; 806 807 /* 808 * No need for threads to be pending here, they can leave the first 809 * taker all the work. 810 * 811 * mvmtxq->tx_request logic: 812 * 813 * If 0, no one is currently TXing, set to 1 to indicate current thread 814 * will now start TX and other threads should quit. 815 * 816 * If 1, another thread is currently TXing, set to 2 to indicate to 817 * that thread that there was another request. Since that request may 818 * have raced with the check whether the queue is empty, the TXing 819 * thread should check the queue's status one more time before leaving. 820 * This check is done in order to not leave any TX hanging in the queue 821 * until the next TX invocation (which may not even happen). 822 * 823 * If 2, another thread is currently TXing, and it will already double 824 * check the queue, so do nothing. 825 */ 826 if (atomic_fetch_add_unless(&mvmtxq->tx_request, 1, 2)) 827 return; 828 829 rcu_read_lock(); 830 do { 831 while (likely(!mvmtxq->stopped && 832 (mvm->trans->system_pm_mode == 833 IWL_PLAT_PM_MODE_DISABLED))) { 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 if (!txq->sta) 846 iwl_mvm_tx_skb_non_sta(mvm, skb); 847 else 848 iwl_mvm_tx_skb(mvm, skb, txq->sta); 849 } 850 } while (atomic_dec_return(&mvmtxq->tx_request)); 851 rcu_read_unlock(); 852 } 853 854 static void iwl_mvm_mac_wake_tx_queue(struct ieee80211_hw *hw, 855 struct ieee80211_txq *txq) 856 { 857 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 858 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq); 859 860 /* 861 * Please note that racing is handled very carefully here: 862 * mvmtxq->txq_id is updated during allocation, and mvmtxq->list is 863 * deleted afterwards. 864 * This means that if: 865 * mvmtxq->txq_id != INVALID_QUEUE && list_empty(&mvmtxq->list): 866 * queue is allocated and we can TX. 867 * mvmtxq->txq_id != INVALID_QUEUE && !list_empty(&mvmtxq->list): 868 * a race, should defer the frame. 869 * mvmtxq->txq_id == INVALID_QUEUE && list_empty(&mvmtxq->list): 870 * need to allocate the queue and defer the frame. 871 * mvmtxq->txq_id == INVALID_QUEUE && !list_empty(&mvmtxq->list): 872 * queue is already scheduled for allocation, no need to allocate, 873 * should defer the frame. 874 */ 875 876 /* If the queue is allocated TX and return. */ 877 if (!txq->sta || mvmtxq->txq_id != IWL_MVM_INVALID_QUEUE) { 878 /* 879 * Check that list is empty to avoid a race where txq_id is 880 * already updated, but the queue allocation work wasn't 881 * finished 882 */ 883 if (unlikely(txq->sta && !list_empty(&mvmtxq->list))) 884 return; 885 886 iwl_mvm_mac_itxq_xmit(hw, txq); 887 return; 888 } 889 890 /* The list is being deleted only after the queue is fully allocated. */ 891 if (!list_empty(&mvmtxq->list)) 892 return; 893 894 list_add_tail(&mvmtxq->list, &mvm->add_stream_txqs); 895 schedule_work(&mvm->add_stream_wk); 896 } 897 898 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \ 899 do { \ 900 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \ 901 break; \ 902 iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt); \ 903 } while (0) 904 905 static void 906 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 907 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn, 908 enum ieee80211_ampdu_mlme_action action) 909 { 910 struct iwl_fw_dbg_trigger_tlv *trig; 911 struct iwl_fw_dbg_trigger_ba *ba_trig; 912 913 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 914 FW_DBG_TRIGGER_BA); 915 if (!trig) 916 return; 917 918 ba_trig = (void *)trig->data; 919 920 switch (action) { 921 case IEEE80211_AMPDU_TX_OPERATIONAL: { 922 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 923 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 924 925 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid, 926 "TX AGG START: MAC %pM tid %d ssn %d\n", 927 sta->addr, tid, tid_data->ssn); 928 break; 929 } 930 case IEEE80211_AMPDU_TX_STOP_CONT: 931 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid, 932 "TX AGG STOP: MAC %pM tid %d\n", 933 sta->addr, tid); 934 break; 935 case IEEE80211_AMPDU_RX_START: 936 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid, 937 "RX AGG START: MAC %pM tid %d ssn %d\n", 938 sta->addr, tid, rx_ba_ssn); 939 break; 940 case IEEE80211_AMPDU_RX_STOP: 941 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid, 942 "RX AGG STOP: MAC %pM tid %d\n", 943 sta->addr, tid); 944 break; 945 default: 946 break; 947 } 948 } 949 950 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw, 951 struct ieee80211_vif *vif, 952 struct ieee80211_ampdu_params *params) 953 { 954 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 955 int ret; 956 struct ieee80211_sta *sta = params->sta; 957 enum ieee80211_ampdu_mlme_action action = params->action; 958 u16 tid = params->tid; 959 u16 *ssn = ¶ms->ssn; 960 u16 buf_size = params->buf_size; 961 bool amsdu = params->amsdu; 962 u16 timeout = params->timeout; 963 964 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n", 965 sta->addr, tid, action); 966 967 if (!(mvm->nvm_data->sku_cap_11n_enable)) 968 return -EACCES; 969 970 mutex_lock(&mvm->mutex); 971 972 switch (action) { 973 case IEEE80211_AMPDU_RX_START: 974 if (iwl_mvm_vif_from_mac80211(vif)->ap_sta_id == 975 iwl_mvm_sta_from_mac80211(sta)->sta_id) { 976 struct iwl_mvm_vif *mvmvif; 977 u16 macid = iwl_mvm_vif_from_mac80211(vif)->id; 978 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid]; 979 980 mdata->opened_rx_ba_sessions = true; 981 mvmvif = iwl_mvm_vif_from_mac80211(vif); 982 cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk); 983 } 984 if (!iwl_enable_rx_ampdu()) { 985 ret = -EINVAL; 986 break; 987 } 988 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size, 989 timeout); 990 break; 991 case IEEE80211_AMPDU_RX_STOP: 992 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size, 993 timeout); 994 break; 995 case IEEE80211_AMPDU_TX_START: 996 if (!iwl_enable_tx_ampdu()) { 997 ret = -EINVAL; 998 break; 999 } 1000 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn); 1001 break; 1002 case IEEE80211_AMPDU_TX_STOP_CONT: 1003 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid); 1004 break; 1005 case IEEE80211_AMPDU_TX_STOP_FLUSH: 1006 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 1007 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid); 1008 break; 1009 case IEEE80211_AMPDU_TX_OPERATIONAL: 1010 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, 1011 buf_size, amsdu); 1012 break; 1013 default: 1014 WARN_ON_ONCE(1); 1015 ret = -EINVAL; 1016 break; 1017 } 1018 1019 if (!ret) { 1020 u16 rx_ba_ssn = 0; 1021 1022 if (action == IEEE80211_AMPDU_RX_START) 1023 rx_ba_ssn = *ssn; 1024 1025 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid, 1026 rx_ba_ssn, action); 1027 } 1028 mutex_unlock(&mvm->mutex); 1029 1030 return ret; 1031 } 1032 1033 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac, 1034 struct ieee80211_vif *vif) 1035 { 1036 struct iwl_mvm *mvm = data; 1037 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1038 1039 mvmvif->uploaded = false; 1040 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1041 1042 spin_lock_bh(&mvm->time_event_lock); 1043 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data); 1044 spin_unlock_bh(&mvm->time_event_lock); 1045 1046 mvmvif->phy_ctxt = NULL; 1047 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data)); 1048 memset(&mvmvif->probe_resp_data, 0, sizeof(mvmvif->probe_resp_data)); 1049 } 1050 1051 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) 1052 { 1053 iwl_mvm_stop_device(mvm); 1054 1055 mvm->cur_aid = 0; 1056 1057 mvm->scan_status = 0; 1058 mvm->ps_disabled = false; 1059 mvm->rfkill_safe_init_done = false; 1060 1061 /* just in case one was running */ 1062 iwl_mvm_cleanup_roc_te(mvm); 1063 ieee80211_remain_on_channel_expired(mvm->hw); 1064 1065 iwl_mvm_ftm_restart(mvm); 1066 1067 /* 1068 * cleanup all interfaces, even inactive ones, as some might have 1069 * gone down during the HW restart 1070 */ 1071 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm); 1072 1073 mvm->p2p_device_vif = NULL; 1074 1075 iwl_mvm_reset_phy_ctxts(mvm); 1076 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 1077 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif)); 1078 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd)); 1079 1080 ieee80211_wake_queues(mvm->hw); 1081 1082 mvm->vif_count = 0; 1083 mvm->rx_ba_sessions = 0; 1084 mvm->fwrt.dump.conf = FW_DBG_INVALID; 1085 mvm->monitor_on = false; 1086 1087 /* keep statistics ticking */ 1088 iwl_mvm_accu_radio_stats(mvm); 1089 } 1090 1091 int __iwl_mvm_mac_start(struct iwl_mvm *mvm) 1092 { 1093 int ret; 1094 1095 lockdep_assert_held(&mvm->mutex); 1096 1097 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) { 1098 /* 1099 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART 1100 * so later code will - from now on - see that we're doing it. 1101 */ 1102 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1103 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 1104 /* Clean up some internal and mac80211 state on restart */ 1105 iwl_mvm_restart_cleanup(mvm); 1106 } 1107 ret = iwl_mvm_up(mvm); 1108 1109 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_POST_INIT, 1110 NULL); 1111 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_PERIODIC, 1112 NULL); 1113 1114 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1115 /* Something went wrong - we need to finish some cleanup 1116 * that normally iwl_mvm_mac_restart_complete() below 1117 * would do. 1118 */ 1119 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1120 } 1121 1122 return ret; 1123 } 1124 1125 static int iwl_mvm_mac_start(struct ieee80211_hw *hw) 1126 { 1127 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1128 int ret; 1129 1130 mutex_lock(&mvm->mutex); 1131 ret = __iwl_mvm_mac_start(mvm); 1132 mutex_unlock(&mvm->mutex); 1133 1134 return ret; 1135 } 1136 1137 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm) 1138 { 1139 int ret; 1140 1141 mutex_lock(&mvm->mutex); 1142 1143 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1144 1145 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1146 if (ret) 1147 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n", 1148 ret); 1149 1150 iwl_mvm_send_recovery_cmd(mvm, ERROR_RECOVERY_END_OF_RECOVERY); 1151 1152 /* 1153 * If we have TDLS peers, remove them. We don't know the last seqno/PN 1154 * of packets the FW sent out, so we must reconnect. 1155 */ 1156 iwl_mvm_teardown_tdls_peers(mvm); 1157 1158 mutex_unlock(&mvm->mutex); 1159 } 1160 1161 static void 1162 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw, 1163 enum ieee80211_reconfig_type reconfig_type) 1164 { 1165 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1166 1167 switch (reconfig_type) { 1168 case IEEE80211_RECONFIG_TYPE_RESTART: 1169 iwl_mvm_restart_complete(mvm); 1170 break; 1171 case IEEE80211_RECONFIG_TYPE_SUSPEND: 1172 break; 1173 } 1174 } 1175 1176 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm) 1177 { 1178 lockdep_assert_held(&mvm->mutex); 1179 1180 /* firmware counters are obviously reset now, but we shouldn't 1181 * partially track so also clear the fw_reset_accu counters. 1182 */ 1183 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats)); 1184 1185 /* async_handlers_wk is now blocked */ 1186 1187 /* 1188 * The work item could be running or queued if the 1189 * ROC time event stops just as we get here. 1190 */ 1191 flush_work(&mvm->roc_done_wk); 1192 1193 iwl_mvm_stop_device(mvm); 1194 1195 iwl_mvm_async_handlers_purge(mvm); 1196 /* async_handlers_list is empty and will stay empty: HW is stopped */ 1197 1198 /* the fw is stopped, the aux sta is dead: clean up driver state */ 1199 iwl_mvm_del_aux_sta(mvm); 1200 1201 /* 1202 * Clear IN_HW_RESTART and HW_RESTART_REQUESTED flag when stopping the 1203 * hw (as restart_complete() won't be called in this case) and mac80211 1204 * won't execute the restart. 1205 * But make sure to cleanup interfaces that have gone down before/during 1206 * HW restart was requested. 1207 */ 1208 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 1209 test_and_clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 1210 &mvm->status)) 1211 ieee80211_iterate_interfaces(mvm->hw, 0, 1212 iwl_mvm_cleanup_iterator, mvm); 1213 1214 /* We shouldn't have any UIDs still set. Loop over all the UIDs to 1215 * make sure there's nothing left there and warn if any is found. 1216 */ 1217 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 1218 int i; 1219 1220 for (i = 0; i < mvm->max_scans; i++) { 1221 if (WARN_ONCE(mvm->scan_uid_status[i], 1222 "UMAC scan UID %d status was not cleaned\n", 1223 i)) 1224 mvm->scan_uid_status[i] = 0; 1225 } 1226 } 1227 } 1228 1229 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw) 1230 { 1231 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1232 1233 flush_work(&mvm->async_handlers_wk); 1234 flush_work(&mvm->add_stream_wk); 1235 1236 /* 1237 * Lock and clear the firmware running bit here already, so that 1238 * new commands coming in elsewhere, e.g. from debugfs, will not 1239 * be able to proceed. This is important here because one of those 1240 * debugfs files causes the firmware dump to be triggered, and if we 1241 * don't stop debugfs accesses before canceling that it could be 1242 * retriggered after we flush it but before we've cleared the bit. 1243 */ 1244 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status); 1245 1246 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork); 1247 cancel_delayed_work_sync(&mvm->scan_timeout_dwork); 1248 iwl_fw_free_dump_desc(&mvm->fwrt); 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 union { 1280 struct iwl_dev_tx_power_cmd v5; 1281 struct iwl_dev_tx_power_cmd_v4 v4; 1282 } cmd = { 1283 .v5.v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC), 1284 .v5.v3.mac_context_id = 1285 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id), 1286 .v5.v3.pwr_restriction = cpu_to_le16(8 * tx_power), 1287 }; 1288 1289 if (tx_power == IWL_DEFAULT_MAX_TX_POWER) 1290 cmd.v5.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER); 1291 1292 if (fw_has_api(&mvm->fw->ucode_capa, 1293 IWL_UCODE_TLV_API_REDUCE_TX_POWER)) 1294 len = sizeof(cmd.v5); 1295 else if (fw_has_capa(&mvm->fw->ucode_capa, 1296 IWL_UCODE_TLV_CAPA_TX_POWER_ACK)) 1297 len = sizeof(cmd.v4); 1298 else 1299 len = sizeof(cmd.v4.v3); 1300 1301 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd); 1302 } 1303 1304 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw, 1305 struct ieee80211_vif *vif) 1306 { 1307 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1308 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1309 int ret; 1310 1311 mutex_lock(&mvm->mutex); 1312 1313 if (mvmvif->csa_failed) { 1314 mvmvif->csa_failed = false; 1315 ret = -EIO; 1316 goto out_unlock; 1317 } 1318 1319 if (vif->type == NL80211_IFTYPE_STATION) { 1320 struct iwl_mvm_sta *mvmsta; 1321 1322 mvmvif->csa_bcn_pending = false; 1323 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, 1324 mvmvif->ap_sta_id); 1325 1326 if (WARN_ON(!mvmsta)) { 1327 ret = -EIO; 1328 goto out_unlock; 1329 } 1330 1331 if (!fw_has_capa(&mvm->fw->ucode_capa, 1332 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) 1333 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false); 1334 1335 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1336 1337 if (!fw_has_capa(&mvm->fw->ucode_capa, 1338 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { 1339 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 1340 if (ret) 1341 goto out_unlock; 1342 1343 iwl_mvm_stop_session_protection(mvm, vif); 1344 } 1345 } 1346 1347 mvmvif->ps_disabled = false; 1348 1349 ret = iwl_mvm_power_update_ps(mvm); 1350 1351 out_unlock: 1352 mutex_unlock(&mvm->mutex); 1353 1354 return ret; 1355 } 1356 1357 static void iwl_mvm_abort_channel_switch(struct ieee80211_hw *hw, 1358 struct ieee80211_vif *vif) 1359 { 1360 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1361 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1362 struct iwl_chan_switch_te_cmd cmd = { 1363 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 1364 mvmvif->color)), 1365 .action = cpu_to_le32(FW_CTXT_ACTION_REMOVE), 1366 }; 1367 1368 IWL_DEBUG_MAC80211(mvm, "Abort CSA on mac %d\n", mvmvif->id); 1369 1370 mutex_lock(&mvm->mutex); 1371 WARN_ON(iwl_mvm_send_cmd_pdu(mvm, 1372 WIDE_ID(MAC_CONF_GROUP, 1373 CHANNEL_SWITCH_TIME_EVENT_CMD), 1374 0, sizeof(cmd), &cmd)); 1375 mutex_unlock(&mvm->mutex); 1376 1377 WARN_ON(iwl_mvm_post_channel_switch(hw, vif)); 1378 } 1379 1380 static void iwl_mvm_channel_switch_disconnect_wk(struct work_struct *wk) 1381 { 1382 struct iwl_mvm *mvm; 1383 struct iwl_mvm_vif *mvmvif; 1384 struct ieee80211_vif *vif; 1385 1386 mvmvif = container_of(wk, struct iwl_mvm_vif, csa_work.work); 1387 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 1388 mvm = mvmvif->mvm; 1389 1390 iwl_mvm_abort_channel_switch(mvm->hw, vif); 1391 ieee80211_chswitch_done(vif, false); 1392 } 1393 1394 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, 1395 struct ieee80211_vif *vif) 1396 { 1397 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1398 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1399 int ret; 1400 1401 mvmvif->mvm = mvm; 1402 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); 1403 1404 /* 1405 * Not much to do here. The stack will not allow interface 1406 * types or combinations that we didn't advertise, so we 1407 * don't really have to check the types. 1408 */ 1409 1410 mutex_lock(&mvm->mutex); 1411 1412 /* make sure that beacon statistics don't go backwards with FW reset */ 1413 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1414 mvmvif->beacon_stats.accu_num_beacons += 1415 mvmvif->beacon_stats.num_beacons; 1416 1417 /* Allocate resources for the MAC context, and add it to the fw */ 1418 ret = iwl_mvm_mac_ctxt_init(mvm, vif); 1419 if (ret) 1420 goto out_unlock; 1421 1422 rcu_assign_pointer(mvm->vif_id_to_mac[mvmvif->id], vif); 1423 1424 /* Counting number of interfaces is needed for legacy PM */ 1425 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1426 mvm->vif_count++; 1427 1428 /* 1429 * The AP binding flow can be done only after the beacon 1430 * template is configured (which happens only in the mac80211 1431 * start_ap() flow), and adding the broadcast station can happen 1432 * only after the binding. 1433 * In addition, since modifying the MAC before adding a bcast 1434 * station is not allowed by the FW, delay the adding of MAC context to 1435 * the point where we can also add the bcast station. 1436 * In short: there's not much we can do at this point, other than 1437 * allocating resources :) 1438 */ 1439 if (vif->type == NL80211_IFTYPE_AP || 1440 vif->type == NL80211_IFTYPE_ADHOC) { 1441 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 1442 if (ret) { 1443 IWL_ERR(mvm, "Failed to allocate bcast sta\n"); 1444 goto out_release; 1445 } 1446 1447 /* 1448 * Only queue for this station is the mcast queue, 1449 * which shouldn't be in TFD mask anyway 1450 */ 1451 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta, 1452 0, vif->type, 1453 IWL_STA_MULTICAST); 1454 if (ret) 1455 goto out_release; 1456 1457 iwl_mvm_vif_dbgfs_register(mvm, vif); 1458 goto out_unlock; 1459 } 1460 1461 mvmvif->features |= hw->netdev_features; 1462 1463 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 1464 if (ret) 1465 goto out_release; 1466 1467 ret = iwl_mvm_power_update_mac(mvm); 1468 if (ret) 1469 goto out_remove_mac; 1470 1471 /* beacon filtering */ 1472 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 1473 if (ret) 1474 goto out_remove_mac; 1475 1476 if (!mvm->bf_allowed_vif && 1477 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) { 1478 mvm->bf_allowed_vif = mvmvif; 1479 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 1480 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 1481 } 1482 1483 /* 1484 * P2P_DEVICE interface does not have a channel context assigned to it, 1485 * so a dedicated PHY context is allocated to it and the corresponding 1486 * MAC context is bound to it at this stage. 1487 */ 1488 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1489 1490 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 1491 if (!mvmvif->phy_ctxt) { 1492 ret = -ENOSPC; 1493 goto out_free_bf; 1494 } 1495 1496 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 1497 ret = iwl_mvm_binding_add_vif(mvm, vif); 1498 if (ret) 1499 goto out_unref_phy; 1500 1501 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif); 1502 if (ret) 1503 goto out_unbind; 1504 1505 /* Save a pointer to p2p device vif, so it can later be used to 1506 * update the p2p device MAC when a GO is started/stopped */ 1507 mvm->p2p_device_vif = vif; 1508 } 1509 1510 iwl_mvm_tcm_add_vif(mvm, vif); 1511 INIT_DELAYED_WORK(&mvmvif->csa_work, 1512 iwl_mvm_channel_switch_disconnect_wk); 1513 1514 if (vif->type == NL80211_IFTYPE_MONITOR) 1515 mvm->monitor_on = true; 1516 1517 iwl_mvm_vif_dbgfs_register(mvm, vif); 1518 goto out_unlock; 1519 1520 out_unbind: 1521 iwl_mvm_binding_remove_vif(mvm, vif); 1522 out_unref_phy: 1523 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1524 out_free_bf: 1525 if (mvm->bf_allowed_vif == mvmvif) { 1526 mvm->bf_allowed_vif = NULL; 1527 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1528 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1529 } 1530 out_remove_mac: 1531 mvmvif->phy_ctxt = NULL; 1532 iwl_mvm_mac_ctxt_remove(mvm, vif); 1533 out_release: 1534 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1535 mvm->vif_count--; 1536 out_unlock: 1537 mutex_unlock(&mvm->mutex); 1538 1539 return ret; 1540 } 1541 1542 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm, 1543 struct ieee80211_vif *vif) 1544 { 1545 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1546 /* 1547 * Flush the ROC worker which will flush the OFFCHANNEL queue. 1548 * We assume here that all the packets sent to the OFFCHANNEL 1549 * queue are sent in ROC session. 1550 */ 1551 flush_work(&mvm->roc_done_wk); 1552 } 1553 } 1554 1555 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, 1556 struct ieee80211_vif *vif) 1557 { 1558 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1559 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1560 struct iwl_probe_resp_data *probe_data; 1561 1562 iwl_mvm_prepare_mac_removal(mvm, vif); 1563 1564 if (!(vif->type == NL80211_IFTYPE_AP || 1565 vif->type == NL80211_IFTYPE_ADHOC)) 1566 iwl_mvm_tcm_rm_vif(mvm, vif); 1567 1568 mutex_lock(&mvm->mutex); 1569 1570 probe_data = rcu_dereference_protected(mvmvif->probe_resp_data, 1571 lockdep_is_held(&mvm->mutex)); 1572 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); 1573 if (probe_data) 1574 kfree_rcu(probe_data, rcu_head); 1575 1576 if (mvm->bf_allowed_vif == mvmvif) { 1577 mvm->bf_allowed_vif = NULL; 1578 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1579 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1580 } 1581 1582 if (vif->bss_conf.ftm_responder) 1583 memset(&mvm->ftm_resp_stats, 0, sizeof(mvm->ftm_resp_stats)); 1584 1585 iwl_mvm_vif_dbgfs_clean(mvm, vif); 1586 1587 /* 1588 * For AP/GO interface, the tear down of the resources allocated to the 1589 * interface is be handled as part of the stop_ap flow. 1590 */ 1591 if (vif->type == NL80211_IFTYPE_AP || 1592 vif->type == NL80211_IFTYPE_ADHOC) { 1593 #ifdef CONFIG_NL80211_TESTMODE 1594 if (vif == mvm->noa_vif) { 1595 mvm->noa_vif = NULL; 1596 mvm->noa_duration = 0; 1597 } 1598 #endif 1599 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta); 1600 iwl_mvm_dealloc_bcast_sta(mvm, vif); 1601 goto out_release; 1602 } 1603 1604 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1605 mvm->p2p_device_vif = NULL; 1606 iwl_mvm_rm_p2p_bcast_sta(mvm, vif); 1607 iwl_mvm_binding_remove_vif(mvm, vif); 1608 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1609 mvmvif->phy_ctxt = NULL; 1610 } 1611 1612 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE) 1613 mvm->vif_count--; 1614 1615 iwl_mvm_power_update_mac(mvm); 1616 iwl_mvm_mac_ctxt_remove(mvm, vif); 1617 1618 RCU_INIT_POINTER(mvm->vif_id_to_mac[mvmvif->id], NULL); 1619 1620 if (vif->type == NL80211_IFTYPE_MONITOR) 1621 mvm->monitor_on = false; 1622 1623 out_release: 1624 mutex_unlock(&mvm->mutex); 1625 } 1626 1627 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed) 1628 { 1629 return 0; 1630 } 1631 1632 struct iwl_mvm_mc_iter_data { 1633 struct iwl_mvm *mvm; 1634 int port_id; 1635 }; 1636 1637 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac, 1638 struct ieee80211_vif *vif) 1639 { 1640 struct iwl_mvm_mc_iter_data *data = _data; 1641 struct iwl_mvm *mvm = data->mvm; 1642 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd; 1643 struct iwl_host_cmd hcmd = { 1644 .id = MCAST_FILTER_CMD, 1645 .flags = CMD_ASYNC, 1646 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1647 }; 1648 int ret, len; 1649 1650 /* if we don't have free ports, mcast frames will be dropped */ 1651 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM)) 1652 return; 1653 1654 if (vif->type != NL80211_IFTYPE_STATION || 1655 !vif->bss_conf.assoc) 1656 return; 1657 1658 cmd->port_id = data->port_id++; 1659 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 1660 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4); 1661 1662 hcmd.len[0] = len; 1663 hcmd.data[0] = cmd; 1664 1665 ret = iwl_mvm_send_cmd(mvm, &hcmd); 1666 if (ret) 1667 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret); 1668 } 1669 1670 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm) 1671 { 1672 struct iwl_mvm_mc_iter_data iter_data = { 1673 .mvm = mvm, 1674 }; 1675 1676 lockdep_assert_held(&mvm->mutex); 1677 1678 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd)) 1679 return; 1680 1681 ieee80211_iterate_active_interfaces_atomic( 1682 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1683 iwl_mvm_mc_iface_iterator, &iter_data); 1684 } 1685 1686 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw, 1687 struct netdev_hw_addr_list *mc_list) 1688 { 1689 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1690 struct iwl_mcast_filter_cmd *cmd; 1691 struct netdev_hw_addr *addr; 1692 int addr_count; 1693 bool pass_all; 1694 int len; 1695 1696 addr_count = netdev_hw_addr_list_count(mc_list); 1697 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES || 1698 IWL_MVM_FW_MCAST_FILTER_PASS_ALL; 1699 if (pass_all) 1700 addr_count = 0; 1701 1702 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4); 1703 cmd = kzalloc(len, GFP_ATOMIC); 1704 if (!cmd) 1705 return 0; 1706 1707 if (pass_all) { 1708 cmd->pass_all = 1; 1709 return (u64)(unsigned long)cmd; 1710 } 1711 1712 netdev_hw_addr_list_for_each(addr, mc_list) { 1713 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n", 1714 cmd->count, addr->addr); 1715 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN], 1716 addr->addr, ETH_ALEN); 1717 cmd->count++; 1718 } 1719 1720 return (u64)(unsigned long)cmd; 1721 } 1722 1723 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw, 1724 unsigned int changed_flags, 1725 unsigned int *total_flags, 1726 u64 multicast) 1727 { 1728 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1729 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast; 1730 1731 mutex_lock(&mvm->mutex); 1732 1733 /* replace previous configuration */ 1734 kfree(mvm->mcast_filter_cmd); 1735 mvm->mcast_filter_cmd = cmd; 1736 1737 if (!cmd) 1738 goto out; 1739 1740 if (changed_flags & FIF_ALLMULTI) 1741 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI); 1742 1743 if (cmd->pass_all) 1744 cmd->count = 0; 1745 1746 iwl_mvm_recalc_multicast(mvm); 1747 out: 1748 mutex_unlock(&mvm->mutex); 1749 *total_flags = 0; 1750 } 1751 1752 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw, 1753 struct ieee80211_vif *vif, 1754 unsigned int filter_flags, 1755 unsigned int changed_flags) 1756 { 1757 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1758 1759 /* We support only filter for probe requests */ 1760 if (!(changed_flags & FIF_PROBE_REQ)) 1761 return; 1762 1763 /* Supported only for p2p client interfaces */ 1764 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1765 !vif->p2p) 1766 return; 1767 1768 mutex_lock(&mvm->mutex); 1769 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1770 mutex_unlock(&mvm->mutex); 1771 } 1772 1773 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 1774 struct iwl_bcast_iter_data { 1775 struct iwl_mvm *mvm; 1776 struct iwl_bcast_filter_cmd *cmd; 1777 u8 current_filter; 1778 }; 1779 1780 static void 1781 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif, 1782 const struct iwl_fw_bcast_filter *in_filter, 1783 struct iwl_fw_bcast_filter *out_filter) 1784 { 1785 struct iwl_fw_bcast_filter_attr *attr; 1786 int i; 1787 1788 memcpy(out_filter, in_filter, sizeof(*out_filter)); 1789 1790 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) { 1791 attr = &out_filter->attrs[i]; 1792 1793 if (!attr->mask) 1794 break; 1795 1796 switch (attr->reserved1) { 1797 case cpu_to_le16(BC_FILTER_MAGIC_IP): 1798 if (vif->bss_conf.arp_addr_cnt != 1) { 1799 attr->mask = 0; 1800 continue; 1801 } 1802 1803 attr->val = vif->bss_conf.arp_addr_list[0]; 1804 break; 1805 case cpu_to_le16(BC_FILTER_MAGIC_MAC): 1806 attr->val = *(__be32 *)&vif->addr[2]; 1807 break; 1808 default: 1809 break; 1810 } 1811 attr->reserved1 = 0; 1812 out_filter->num_attrs++; 1813 } 1814 } 1815 1816 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac, 1817 struct ieee80211_vif *vif) 1818 { 1819 struct iwl_bcast_iter_data *data = _data; 1820 struct iwl_mvm *mvm = data->mvm; 1821 struct iwl_bcast_filter_cmd *cmd = data->cmd; 1822 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1823 struct iwl_fw_bcast_mac *bcast_mac; 1824 int i; 1825 1826 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs))) 1827 return; 1828 1829 bcast_mac = &cmd->macs[mvmvif->id]; 1830 1831 /* 1832 * enable filtering only for associated stations, but not for P2P 1833 * Clients 1834 */ 1835 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p || 1836 !vif->bss_conf.assoc) 1837 return; 1838 1839 bcast_mac->default_discard = 1; 1840 1841 /* copy all configured filters */ 1842 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) { 1843 /* 1844 * Make sure we don't exceed our filters limit. 1845 * if there is still a valid filter to be configured, 1846 * be on the safe side and just allow bcast for this mac. 1847 */ 1848 if (WARN_ON_ONCE(data->current_filter >= 1849 ARRAY_SIZE(cmd->filters))) { 1850 bcast_mac->default_discard = 0; 1851 bcast_mac->attached_filters = 0; 1852 break; 1853 } 1854 1855 iwl_mvm_set_bcast_filter(vif, 1856 &mvm->bcast_filters[i], 1857 &cmd->filters[data->current_filter]); 1858 1859 /* skip current filter if it contains no attributes */ 1860 if (!cmd->filters[data->current_filter].num_attrs) 1861 continue; 1862 1863 /* attach the filter to current mac */ 1864 bcast_mac->attached_filters |= 1865 cpu_to_le16(BIT(data->current_filter)); 1866 1867 data->current_filter++; 1868 } 1869 } 1870 1871 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm, 1872 struct iwl_bcast_filter_cmd *cmd) 1873 { 1874 struct iwl_bcast_iter_data iter_data = { 1875 .mvm = mvm, 1876 .cmd = cmd, 1877 }; 1878 1879 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL) 1880 return false; 1881 1882 memset(cmd, 0, sizeof(*cmd)); 1883 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters); 1884 cmd->max_macs = ARRAY_SIZE(cmd->macs); 1885 1886 #ifdef CONFIG_IWLWIFI_DEBUGFS 1887 /* use debugfs filters/macs if override is configured */ 1888 if (mvm->dbgfs_bcast_filtering.override) { 1889 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters, 1890 sizeof(cmd->filters)); 1891 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs, 1892 sizeof(cmd->macs)); 1893 return true; 1894 } 1895 #endif 1896 1897 /* if no filters are configured, do nothing */ 1898 if (!mvm->bcast_filters) 1899 return false; 1900 1901 /* configure and attach these filters for each associated sta vif */ 1902 ieee80211_iterate_active_interfaces( 1903 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1904 iwl_mvm_bcast_filter_iterator, &iter_data); 1905 1906 return true; 1907 } 1908 1909 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1910 { 1911 struct iwl_bcast_filter_cmd cmd; 1912 1913 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING)) 1914 return 0; 1915 1916 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) 1917 return 0; 1918 1919 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0, 1920 sizeof(cmd), &cmd); 1921 } 1922 #else 1923 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1924 { 1925 return 0; 1926 } 1927 #endif 1928 1929 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm, 1930 struct ieee80211_vif *vif) 1931 { 1932 struct iwl_mu_group_mgmt_cmd cmd = {}; 1933 1934 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership, 1935 WLAN_MEMBERSHIP_LEN); 1936 memcpy(cmd.user_position, vif->bss_conf.mu_group.position, 1937 WLAN_USER_POSITION_LEN); 1938 1939 return iwl_mvm_send_cmd_pdu(mvm, 1940 WIDE_ID(DATA_PATH_GROUP, 1941 UPDATE_MU_GROUPS_CMD), 1942 0, sizeof(cmd), &cmd); 1943 } 1944 1945 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac, 1946 struct ieee80211_vif *vif) 1947 { 1948 if (vif->mu_mimo_owner) { 1949 struct iwl_mu_group_mgmt_notif *notif = _data; 1950 1951 /* 1952 * MU-MIMO Group Id action frame is little endian. We treat 1953 * the data received from firmware as if it came from the 1954 * action frame, so no conversion is needed. 1955 */ 1956 ieee80211_update_mu_groups(vif, 1957 (u8 *)¬if->membership_status, 1958 (u8 *)¬if->user_position); 1959 } 1960 } 1961 1962 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm, 1963 struct iwl_rx_cmd_buffer *rxb) 1964 { 1965 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1966 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data; 1967 1968 ieee80211_iterate_active_interfaces_atomic( 1969 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1970 iwl_mvm_mu_mimo_iface_iterator, notif); 1971 } 1972 1973 static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit) 1974 { 1975 u8 byte_num = ppe_pos_bit / 8; 1976 u8 bit_num = ppe_pos_bit % 8; 1977 u8 residue_bits; 1978 u8 res; 1979 1980 if (bit_num <= 5) 1981 return (ppe[byte_num] >> bit_num) & 1982 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1); 1983 1984 /* 1985 * If bit_num > 5, we have to combine bits with next byte. 1986 * Calculate how many bits we need to take from current byte (called 1987 * here "residue_bits"), and add them to bits from next byte. 1988 */ 1989 1990 residue_bits = 8 - bit_num; 1991 1992 res = (ppe[byte_num + 1] & 1993 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE - residue_bits) - 1)) << 1994 residue_bits; 1995 res += (ppe[byte_num] >> bit_num) & (BIT(residue_bits) - 1); 1996 1997 return res; 1998 } 1999 2000 static void iwl_mvm_cfg_he_sta(struct iwl_mvm *mvm, 2001 struct ieee80211_vif *vif, u8 sta_id) 2002 { 2003 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2004 struct iwl_he_sta_context_cmd sta_ctxt_cmd = { 2005 .sta_id = sta_id, 2006 .tid_limit = IWL_MAX_TID_COUNT, 2007 .bss_color = vif->bss_conf.bss_color, 2008 .htc_trig_based_pkt_ext = vif->bss_conf.htc_trig_based_pkt_ext, 2009 .frame_time_rts_th = 2010 cpu_to_le16(vif->bss_conf.frame_time_rts_th), 2011 }; 2012 int size = fw_has_api(&mvm->fw->ucode_capa, 2013 IWL_UCODE_TLV_API_MBSSID_HE) ? 2014 sizeof(sta_ctxt_cmd) : 2015 sizeof(struct iwl_he_sta_context_cmd_v1); 2016 struct ieee80211_sta *sta; 2017 u32 flags; 2018 int i; 2019 2020 rcu_read_lock(); 2021 2022 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_ctxt_cmd.sta_id]); 2023 if (IS_ERR(sta)) { 2024 rcu_read_unlock(); 2025 WARN(1, "Can't find STA to configure HE\n"); 2026 return; 2027 } 2028 2029 if (!sta->he_cap.has_he) { 2030 rcu_read_unlock(); 2031 return; 2032 } 2033 2034 flags = 0; 2035 2036 /* Block 26-tone RU OFDMA transmissions */ 2037 if (mvmvif->he_ru_2mhz_block) 2038 flags |= STA_CTXT_HE_RU_2MHZ_BLOCK; 2039 2040 /* HTC flags */ 2041 if (sta->he_cap.he_cap_elem.mac_cap_info[0] & 2042 IEEE80211_HE_MAC_CAP0_HTC_HE) 2043 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_SUPPORT); 2044 if ((sta->he_cap.he_cap_elem.mac_cap_info[1] & 2045 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION) || 2046 (sta->he_cap.he_cap_elem.mac_cap_info[2] & 2047 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION)) { 2048 u8 link_adap = 2049 ((sta->he_cap.he_cap_elem.mac_cap_info[2] & 2050 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION) << 1) + 2051 (sta->he_cap.he_cap_elem.mac_cap_info[1] & 2052 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION); 2053 2054 if (link_adap == 2) 2055 sta_ctxt_cmd.htc_flags |= 2056 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_UNSOLICITED); 2057 else if (link_adap == 3) 2058 sta_ctxt_cmd.htc_flags |= 2059 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_BOTH); 2060 } 2061 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_BSR) 2062 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BSR_SUPP); 2063 if (sta->he_cap.he_cap_elem.mac_cap_info[3] & 2064 IEEE80211_HE_MAC_CAP3_OMI_CONTROL) 2065 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_OMI_SUPP); 2066 if (sta->he_cap.he_cap_elem.mac_cap_info[4] & IEEE80211_HE_MAC_CAP4_BQR) 2067 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BQR_SUPP); 2068 2069 /* 2070 * Initialize the PPE thresholds to "None" (7), as described in Table 2071 * 9-262ac of 80211.ax/D3.0. 2072 */ 2073 memset(&sta_ctxt_cmd.pkt_ext, 7, sizeof(sta_ctxt_cmd.pkt_ext)); 2074 2075 /* If PPE Thresholds exist, parse them into a FW-familiar format. */ 2076 if (sta->he_cap.he_cap_elem.phy_cap_info[6] & 2077 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) { 2078 u8 nss = (sta->he_cap.ppe_thres[0] & 2079 IEEE80211_PPE_THRES_NSS_MASK) + 1; 2080 u8 ru_index_bitmap = 2081 (sta->he_cap.ppe_thres[0] & 2082 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK) >> 2083 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS; 2084 u8 *ppe = &sta->he_cap.ppe_thres[0]; 2085 u8 ppe_pos_bit = 7; /* Starting after PPE header */ 2086 2087 /* 2088 * FW currently supports only nss == MAX_HE_SUPP_NSS 2089 * 2090 * If nss > MAX: we can ignore values we don't support 2091 * If nss < MAX: we can set zeros in other streams 2092 */ 2093 if (nss > MAX_HE_SUPP_NSS) { 2094 IWL_INFO(mvm, "Got NSS = %d - trimming to %d\n", nss, 2095 MAX_HE_SUPP_NSS); 2096 nss = MAX_HE_SUPP_NSS; 2097 } 2098 2099 for (i = 0; i < nss; i++) { 2100 u8 ru_index_tmp = ru_index_bitmap << 1; 2101 u8 bw; 2102 2103 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; bw++) { 2104 ru_index_tmp >>= 1; 2105 if (!(ru_index_tmp & 1)) 2106 continue; 2107 2108 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][1] = 2109 iwl_mvm_he_get_ppe_val(ppe, 2110 ppe_pos_bit); 2111 ppe_pos_bit += 2112 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2113 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][0] = 2114 iwl_mvm_he_get_ppe_val(ppe, 2115 ppe_pos_bit); 2116 ppe_pos_bit += 2117 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2118 } 2119 } 2120 2121 flags |= STA_CTXT_HE_PACKET_EXT; 2122 } else if ((sta->he_cap.he_cap_elem.phy_cap_info[9] & 2123 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) != 2124 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_RESERVED) { 2125 int low_th = -1; 2126 int high_th = -1; 2127 2128 /* Take the PPE thresholds from the nominal padding info */ 2129 switch (sta->he_cap.he_cap_elem.phy_cap_info[9] & 2130 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) { 2131 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_0US: 2132 low_th = IWL_HE_PKT_EXT_NONE; 2133 high_th = IWL_HE_PKT_EXT_NONE; 2134 break; 2135 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_8US: 2136 low_th = IWL_HE_PKT_EXT_BPSK; 2137 high_th = IWL_HE_PKT_EXT_NONE; 2138 break; 2139 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_16US: 2140 low_th = IWL_HE_PKT_EXT_NONE; 2141 high_th = IWL_HE_PKT_EXT_BPSK; 2142 break; 2143 } 2144 2145 /* Set the PPE thresholds accordingly */ 2146 if (low_th >= 0 && high_th >= 0) { 2147 struct iwl_he_pkt_ext *pkt_ext = 2148 (struct iwl_he_pkt_ext *)&sta_ctxt_cmd.pkt_ext; 2149 2150 for (i = 0; i < MAX_HE_SUPP_NSS; i++) { 2151 u8 bw; 2152 2153 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; 2154 bw++) { 2155 pkt_ext->pkt_ext_qam_th[i][bw][0] = 2156 low_th; 2157 pkt_ext->pkt_ext_qam_th[i][bw][1] = 2158 high_th; 2159 } 2160 } 2161 2162 flags |= STA_CTXT_HE_PACKET_EXT; 2163 } 2164 } 2165 rcu_read_unlock(); 2166 2167 /* Mark MU EDCA as enabled, unless none detected on some AC */ 2168 flags |= STA_CTXT_HE_MU_EDCA_CW; 2169 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 2170 struct ieee80211_he_mu_edca_param_ac_rec *mu_edca = 2171 &mvmvif->queue_params[i].mu_edca_param_rec; 2172 u8 ac = iwl_mvm_mac80211_ac_to_ucode_ac(i); 2173 2174 if (!mvmvif->queue_params[i].mu_edca) { 2175 flags &= ~STA_CTXT_HE_MU_EDCA_CW; 2176 break; 2177 } 2178 2179 sta_ctxt_cmd.trig_based_txf[ac].cwmin = 2180 cpu_to_le16(mu_edca->ecw_min_max & 0xf); 2181 sta_ctxt_cmd.trig_based_txf[ac].cwmax = 2182 cpu_to_le16((mu_edca->ecw_min_max & 0xf0) >> 4); 2183 sta_ctxt_cmd.trig_based_txf[ac].aifsn = 2184 cpu_to_le16(mu_edca->aifsn); 2185 sta_ctxt_cmd.trig_based_txf[ac].mu_time = 2186 cpu_to_le16(mu_edca->mu_edca_timer); 2187 } 2188 2189 if (vif->bss_conf.multi_sta_back_32bit) 2190 flags |= STA_CTXT_HE_32BIT_BA_BITMAP; 2191 2192 if (vif->bss_conf.ack_enabled) 2193 flags |= STA_CTXT_HE_ACK_ENABLED; 2194 2195 if (vif->bss_conf.uora_exists) { 2196 flags |= STA_CTXT_HE_TRIG_RND_ALLOC; 2197 2198 sta_ctxt_cmd.rand_alloc_ecwmin = 2199 vif->bss_conf.uora_ocw_range & 0x7; 2200 sta_ctxt_cmd.rand_alloc_ecwmax = 2201 (vif->bss_conf.uora_ocw_range >> 3) & 0x7; 2202 } 2203 2204 if (vif->bss_conf.nontransmitted) { 2205 flags |= STA_CTXT_HE_REF_BSSID_VALID; 2206 ether_addr_copy(sta_ctxt_cmd.ref_bssid_addr, 2207 vif->bss_conf.transmitter_bssid); 2208 sta_ctxt_cmd.max_bssid_indicator = 2209 vif->bss_conf.bssid_indicator; 2210 sta_ctxt_cmd.bssid_index = vif->bss_conf.bssid_index; 2211 sta_ctxt_cmd.ema_ap = vif->bss_conf.ema_ap; 2212 sta_ctxt_cmd.profile_periodicity = 2213 vif->bss_conf.profile_periodicity; 2214 } 2215 2216 sta_ctxt_cmd.flags = cpu_to_le32(flags); 2217 2218 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(STA_HE_CTXT_CMD, 2219 DATA_PATH_GROUP, 0), 2220 0, size, &sta_ctxt_cmd)) 2221 IWL_ERR(mvm, "Failed to config FW to work HE!\n"); 2222 } 2223 2224 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, 2225 struct ieee80211_vif *vif, 2226 struct ieee80211_bss_conf *bss_conf, 2227 u32 changes) 2228 { 2229 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2230 int ret; 2231 2232 /* 2233 * Re-calculate the tsf id, as the master-slave relations depend on the 2234 * beacon interval, which was not known when the station interface was 2235 * added. 2236 */ 2237 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) { 2238 if (vif->bss_conf.he_support && 2239 !iwlwifi_mod_params.disable_11ax) 2240 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id); 2241 2242 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2243 } 2244 2245 /* Update MU EDCA params */ 2246 if (changes & BSS_CHANGED_QOS && mvmvif->associated && 2247 bss_conf->assoc && vif->bss_conf.he_support && 2248 !iwlwifi_mod_params.disable_11ax) 2249 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id); 2250 2251 /* 2252 * If we're not associated yet, take the (new) BSSID before associating 2253 * so the firmware knows. If we're already associated, then use the old 2254 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC 2255 * branch for disassociation below. 2256 */ 2257 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated) 2258 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2259 2260 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid); 2261 if (ret) 2262 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2263 2264 /* after sending it once, adopt mac80211 data */ 2265 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2266 mvmvif->associated = bss_conf->assoc; 2267 2268 if (changes & BSS_CHANGED_ASSOC) { 2269 if (bss_conf->assoc) { 2270 /* clear statistics to get clean beacon counter */ 2271 iwl_mvm_request_statistics(mvm, true); 2272 memset(&mvmvif->beacon_stats, 0, 2273 sizeof(mvmvif->beacon_stats)); 2274 2275 /* add quota for this interface */ 2276 ret = iwl_mvm_update_quotas(mvm, true, NULL); 2277 if (ret) { 2278 IWL_ERR(mvm, "failed to update quotas\n"); 2279 return; 2280 } 2281 2282 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2283 &mvm->status) && 2284 !fw_has_capa(&mvm->fw->ucode_capa, 2285 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) { 2286 /* 2287 * If we're restarting then the firmware will 2288 * obviously have lost synchronisation with 2289 * the AP. It will attempt to synchronise by 2290 * itself, but we can make it more reliable by 2291 * scheduling a session protection time event. 2292 * 2293 * The firmware needs to receive a beacon to 2294 * catch up with synchronisation, use 110% of 2295 * the beacon interval. 2296 * 2297 * Set a large maximum delay to allow for more 2298 * than a single interface. 2299 * 2300 * For new firmware versions, rely on the 2301 * firmware. This is relevant for DCM scenarios 2302 * only anyway. 2303 */ 2304 u32 dur = (11 * vif->bss_conf.beacon_int) / 10; 2305 iwl_mvm_protect_session(mvm, vif, dur, dur, 2306 5 * dur, false); 2307 } 2308 2309 iwl_mvm_sf_update(mvm, vif, false); 2310 iwl_mvm_power_vif_assoc(mvm, vif); 2311 if (vif->p2p) { 2312 iwl_mvm_update_smps(mvm, vif, 2313 IWL_MVM_SMPS_REQ_PROT, 2314 IEEE80211_SMPS_DYNAMIC); 2315 } 2316 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 2317 /* 2318 * If update fails - SF might be running in associated 2319 * mode while disassociated - which is forbidden. 2320 */ 2321 ret = iwl_mvm_sf_update(mvm, vif, false); 2322 WARN_ONCE(ret && 2323 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 2324 &mvm->status), 2325 "Failed to update SF upon disassociation\n"); 2326 2327 /* 2328 * If we get an assert during the connection (after the 2329 * station has been added, but before the vif is set 2330 * to associated), mac80211 will re-add the station and 2331 * then configure the vif. Since the vif is not 2332 * associated, we would remove the station here and 2333 * this would fail the recovery. 2334 */ 2335 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2336 &mvm->status)) { 2337 /* 2338 * Remove AP station now that 2339 * the MAC is unassoc 2340 */ 2341 ret = iwl_mvm_rm_sta_id(mvm, vif, 2342 mvmvif->ap_sta_id); 2343 if (ret) 2344 IWL_ERR(mvm, 2345 "failed to remove AP station\n"); 2346 2347 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 2348 } 2349 2350 /* remove quota for this interface */ 2351 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2352 if (ret) 2353 IWL_ERR(mvm, "failed to update quotas\n"); 2354 2355 /* this will take the cleared BSSID from bss_conf */ 2356 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2357 if (ret) 2358 IWL_ERR(mvm, 2359 "failed to update MAC %pM (clear after unassoc)\n", 2360 vif->addr); 2361 } 2362 2363 /* 2364 * The firmware tracks the MU-MIMO group on its own. 2365 * However, on HW restart we should restore this data. 2366 */ 2367 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2368 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) { 2369 ret = iwl_mvm_update_mu_groups(mvm, vif); 2370 if (ret) 2371 IWL_ERR(mvm, 2372 "failed to update VHT MU_MIMO groups\n"); 2373 } 2374 2375 iwl_mvm_recalc_multicast(mvm); 2376 iwl_mvm_configure_bcast_filter(mvm); 2377 2378 /* reset rssi values */ 2379 mvmvif->bf_data.ave_beacon_signal = 0; 2380 2381 iwl_mvm_bt_coex_vif_change(mvm); 2382 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, 2383 IEEE80211_SMPS_AUTOMATIC); 2384 if (fw_has_capa(&mvm->fw->ucode_capa, 2385 IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2386 iwl_mvm_config_scan(mvm); 2387 } 2388 2389 if (changes & BSS_CHANGED_BEACON_INFO) { 2390 /* 2391 * We received a beacon from the associated AP so 2392 * remove the session protection. 2393 * A firmware with the new API will remove it automatically. 2394 */ 2395 if (!fw_has_capa(&mvm->fw->ucode_capa, 2396 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) 2397 iwl_mvm_stop_session_protection(mvm, vif); 2398 2399 iwl_mvm_sf_update(mvm, vif, false); 2400 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2401 } 2402 2403 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS | 2404 /* 2405 * Send power command on every beacon change, 2406 * because we may have not enabled beacon abort yet. 2407 */ 2408 BSS_CHANGED_BEACON_INFO)) { 2409 ret = iwl_mvm_power_update_mac(mvm); 2410 if (ret) 2411 IWL_ERR(mvm, "failed to update power mode\n"); 2412 } 2413 2414 if (changes & BSS_CHANGED_TXPOWER) { 2415 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2416 bss_conf->txpower); 2417 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2418 } 2419 2420 if (changes & BSS_CHANGED_CQM) { 2421 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n"); 2422 /* reset cqm events tracking */ 2423 mvmvif->bf_data.last_cqm_event = 0; 2424 if (mvmvif->bf_data.bf_enabled) { 2425 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 2426 if (ret) 2427 IWL_ERR(mvm, 2428 "failed to update CQM thresholds\n"); 2429 } 2430 } 2431 2432 if (changes & BSS_CHANGED_ARP_FILTER) { 2433 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n"); 2434 iwl_mvm_configure_bcast_filter(mvm); 2435 } 2436 } 2437 2438 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw, 2439 struct ieee80211_vif *vif) 2440 { 2441 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2442 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2443 int ret, i; 2444 2445 mutex_lock(&mvm->mutex); 2446 2447 /* Send the beacon template */ 2448 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif); 2449 if (ret) 2450 goto out_unlock; 2451 2452 /* 2453 * Re-calculate the tsf id, as the master-slave relations depend on the 2454 * beacon interval, which was not known when the AP interface was added. 2455 */ 2456 if (vif->type == NL80211_IFTYPE_AP) 2457 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2458 2459 mvmvif->ap_assoc_sta_count = 0; 2460 2461 /* Add the mac context */ 2462 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 2463 if (ret) 2464 goto out_unlock; 2465 2466 /* Perform the binding */ 2467 ret = iwl_mvm_binding_add_vif(mvm, vif); 2468 if (ret) 2469 goto out_remove; 2470 2471 /* 2472 * This is not very nice, but the simplest: 2473 * For older FWs adding the mcast sta before the bcast station may 2474 * cause assert 0x2b00. 2475 * This is fixed in later FW so make the order of removal depend on 2476 * the TLV 2477 */ 2478 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2479 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2480 if (ret) 2481 goto out_unbind; 2482 /* 2483 * Send the bcast station. At this stage the TBTT and DTIM time 2484 * events are added and applied to the scheduler 2485 */ 2486 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2487 if (ret) { 2488 iwl_mvm_rm_mcast_sta(mvm, vif); 2489 goto out_unbind; 2490 } 2491 } else { 2492 /* 2493 * Send the bcast station. At this stage the TBTT and DTIM time 2494 * events are added and applied to the scheduler 2495 */ 2496 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2497 if (ret) 2498 goto out_unbind; 2499 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2500 if (ret) { 2501 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2502 goto out_unbind; 2503 } 2504 } 2505 2506 /* must be set before quota calculations */ 2507 mvmvif->ap_ibss_active = true; 2508 2509 /* send all the early keys to the device now */ 2510 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) { 2511 struct ieee80211_key_conf *key = mvmvif->ap_early_keys[i]; 2512 2513 if (!key) 2514 continue; 2515 2516 mvmvif->ap_early_keys[i] = NULL; 2517 2518 ret = __iwl_mvm_mac_set_key(hw, SET_KEY, vif, NULL, key); 2519 if (ret) 2520 goto out_quota_failed; 2521 } 2522 2523 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) { 2524 iwl_mvm_vif_set_low_latency(mvmvif, true, 2525 LOW_LATENCY_VIF_TYPE); 2526 iwl_mvm_send_low_latency_cmd(mvm, true, mvmvif->id); 2527 } 2528 2529 /* power updated needs to be done before quotas */ 2530 iwl_mvm_power_update_mac(mvm); 2531 2532 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2533 if (ret) 2534 goto out_quota_failed; 2535 2536 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2537 if (vif->p2p && mvm->p2p_device_vif) 2538 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2539 2540 iwl_mvm_bt_coex_vif_change(mvm); 2541 2542 /* we don't support TDLS during DCM */ 2543 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2544 iwl_mvm_teardown_tdls_peers(mvm); 2545 2546 iwl_mvm_ftm_restart_responder(mvm, vif); 2547 2548 goto out_unlock; 2549 2550 out_quota_failed: 2551 iwl_mvm_power_update_mac(mvm); 2552 mvmvif->ap_ibss_active = false; 2553 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2554 iwl_mvm_rm_mcast_sta(mvm, vif); 2555 out_unbind: 2556 iwl_mvm_binding_remove_vif(mvm, vif); 2557 out_remove: 2558 iwl_mvm_mac_ctxt_remove(mvm, vif); 2559 out_unlock: 2560 mutex_unlock(&mvm->mutex); 2561 return ret; 2562 } 2563 2564 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw, 2565 struct ieee80211_vif *vif) 2566 { 2567 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2568 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2569 2570 iwl_mvm_prepare_mac_removal(mvm, vif); 2571 2572 mutex_lock(&mvm->mutex); 2573 2574 /* Handle AP stop while in CSA */ 2575 if (rcu_access_pointer(mvm->csa_vif) == vif) { 2576 iwl_mvm_remove_time_event(mvm, mvmvif, 2577 &mvmvif->time_event_data); 2578 RCU_INIT_POINTER(mvm->csa_vif, NULL); 2579 mvmvif->csa_countdown = false; 2580 } 2581 2582 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) { 2583 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 2584 mvm->csa_tx_block_bcn_timeout = 0; 2585 } 2586 2587 mvmvif->ap_ibss_active = false; 2588 mvm->ap_last_beacon_gp2 = 0; 2589 2590 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) { 2591 iwl_mvm_vif_set_low_latency(mvmvif, false, 2592 LOW_LATENCY_VIF_TYPE); 2593 iwl_mvm_send_low_latency_cmd(mvm, false, mvmvif->id); 2594 } 2595 2596 iwl_mvm_bt_coex_vif_change(mvm); 2597 2598 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2599 if (vif->p2p && mvm->p2p_device_vif) 2600 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2601 2602 iwl_mvm_update_quotas(mvm, false, NULL); 2603 2604 /* 2605 * This is not very nice, but the simplest: 2606 * For older FWs removing the mcast sta before the bcast station may 2607 * cause assert 0x2b00. 2608 * This is fixed in later FW (which will stop beaconing when removing 2609 * bcast station). 2610 * So make the order of removal depend on the TLV 2611 */ 2612 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2613 iwl_mvm_rm_mcast_sta(mvm, vif); 2614 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2615 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2616 iwl_mvm_rm_mcast_sta(mvm, vif); 2617 iwl_mvm_binding_remove_vif(mvm, vif); 2618 2619 iwl_mvm_power_update_mac(mvm); 2620 2621 iwl_mvm_mac_ctxt_remove(mvm, vif); 2622 2623 mutex_unlock(&mvm->mutex); 2624 } 2625 2626 static void 2627 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm, 2628 struct ieee80211_vif *vif, 2629 struct ieee80211_bss_conf *bss_conf, 2630 u32 changes) 2631 { 2632 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2633 2634 /* Changes will be applied when the AP/IBSS is started */ 2635 if (!mvmvif->ap_ibss_active) 2636 return; 2637 2638 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT | 2639 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) && 2640 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL)) 2641 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2642 2643 /* Need to send a new beacon template to the FW */ 2644 if (changes & BSS_CHANGED_BEACON && 2645 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif)) 2646 IWL_WARN(mvm, "Failed updating beacon data\n"); 2647 2648 if (changes & BSS_CHANGED_TXPOWER) { 2649 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2650 bss_conf->txpower); 2651 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2652 } 2653 2654 if (changes & BSS_CHANGED_FTM_RESPONDER) { 2655 int ret = iwl_mvm_ftm_start_responder(mvm, vif); 2656 2657 if (ret) 2658 IWL_WARN(mvm, "Failed to enable FTM responder (%d)\n", 2659 ret); 2660 } 2661 2662 } 2663 2664 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, 2665 struct ieee80211_vif *vif, 2666 struct ieee80211_bss_conf *bss_conf, 2667 u32 changes) 2668 { 2669 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2670 2671 mutex_lock(&mvm->mutex); 2672 2673 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle) 2674 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2675 2676 switch (vif->type) { 2677 case NL80211_IFTYPE_STATION: 2678 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes); 2679 break; 2680 case NL80211_IFTYPE_AP: 2681 case NL80211_IFTYPE_ADHOC: 2682 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes); 2683 break; 2684 case NL80211_IFTYPE_MONITOR: 2685 if (changes & BSS_CHANGED_MU_GROUPS) 2686 iwl_mvm_update_mu_groups(mvm, vif); 2687 break; 2688 default: 2689 /* shouldn't happen */ 2690 WARN_ON_ONCE(1); 2691 } 2692 2693 mutex_unlock(&mvm->mutex); 2694 } 2695 2696 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, 2697 struct ieee80211_vif *vif, 2698 struct ieee80211_scan_request *hw_req) 2699 { 2700 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2701 int ret; 2702 2703 if (hw_req->req.n_channels == 0 || 2704 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels) 2705 return -EINVAL; 2706 2707 mutex_lock(&mvm->mutex); 2708 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies); 2709 mutex_unlock(&mvm->mutex); 2710 2711 return ret; 2712 } 2713 2714 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw, 2715 struct ieee80211_vif *vif) 2716 { 2717 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2718 2719 mutex_lock(&mvm->mutex); 2720 2721 /* Due to a race condition, it's possible that mac80211 asks 2722 * us to stop a hw_scan when it's already stopped. This can 2723 * happen, for instance, if we stopped the scan ourselves, 2724 * called ieee80211_scan_completed() and the userspace called 2725 * cancel scan scan before ieee80211_scan_work() could run. 2726 * To handle that, simply return if the scan is not running. 2727 */ 2728 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) 2729 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2730 2731 mutex_unlock(&mvm->mutex); 2732 } 2733 2734 static void 2735 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw, 2736 struct ieee80211_sta *sta, u16 tids, 2737 int num_frames, 2738 enum ieee80211_frame_release_type reason, 2739 bool more_data) 2740 { 2741 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2742 2743 /* Called when we need to transmit (a) frame(s) from mac80211 */ 2744 2745 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2746 tids, more_data, false); 2747 } 2748 2749 static void 2750 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw, 2751 struct ieee80211_sta *sta, u16 tids, 2752 int num_frames, 2753 enum ieee80211_frame_release_type reason, 2754 bool more_data) 2755 { 2756 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2757 2758 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */ 2759 2760 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2761 tids, more_data, true); 2762 } 2763 2764 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2765 enum sta_notify_cmd cmd, 2766 struct ieee80211_sta *sta) 2767 { 2768 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2769 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2770 unsigned long txqs = 0, tids = 0; 2771 int tid; 2772 2773 /* 2774 * If we have TVQM then we get too high queue numbers - luckily 2775 * we really shouldn't get here with that because such hardware 2776 * should have firmware supporting buffer station offload. 2777 */ 2778 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 2779 return; 2780 2781 spin_lock_bh(&mvmsta->lock); 2782 for (tid = 0; tid < ARRAY_SIZE(mvmsta->tid_data); tid++) { 2783 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2784 2785 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE) 2786 continue; 2787 2788 __set_bit(tid_data->txq_id, &txqs); 2789 2790 if (iwl_mvm_tid_queued(mvm, tid_data) == 0) 2791 continue; 2792 2793 __set_bit(tid, &tids); 2794 } 2795 2796 switch (cmd) { 2797 case STA_NOTIFY_SLEEP: 2798 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT) 2799 ieee80211_sta_set_buffered(sta, tid, true); 2800 2801 if (txqs) 2802 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true); 2803 /* 2804 * The fw updates the STA to be asleep. Tx packets on the Tx 2805 * queues to this station will not be transmitted. The fw will 2806 * send a Tx response with TX_STATUS_FAIL_DEST_PS. 2807 */ 2808 break; 2809 case STA_NOTIFY_AWAKE: 2810 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA)) 2811 break; 2812 2813 if (txqs) 2814 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false); 2815 iwl_mvm_sta_modify_ps_wake(mvm, sta); 2816 break; 2817 default: 2818 break; 2819 } 2820 spin_unlock_bh(&mvmsta->lock); 2821 } 2822 2823 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2824 struct ieee80211_vif *vif, 2825 enum sta_notify_cmd cmd, 2826 struct ieee80211_sta *sta) 2827 { 2828 __iwl_mvm_mac_sta_notify(hw, cmd, sta); 2829 } 2830 2831 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 2832 { 2833 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2834 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data; 2835 struct ieee80211_sta *sta; 2836 struct iwl_mvm_sta *mvmsta; 2837 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE); 2838 2839 if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) 2840 return; 2841 2842 rcu_read_lock(); 2843 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]); 2844 if (WARN_ON(IS_ERR_OR_NULL(sta))) { 2845 rcu_read_unlock(); 2846 return; 2847 } 2848 2849 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2850 2851 if (!mvmsta->vif || 2852 mvmsta->vif->type != NL80211_IFTYPE_AP) { 2853 rcu_read_unlock(); 2854 return; 2855 } 2856 2857 if (mvmsta->sleeping != sleeping) { 2858 mvmsta->sleeping = sleeping; 2859 __iwl_mvm_mac_sta_notify(mvm->hw, 2860 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, 2861 sta); 2862 ieee80211_sta_ps_transition(sta, sleeping); 2863 } 2864 2865 if (sleeping) { 2866 switch (notif->type) { 2867 case IWL_MVM_PM_EVENT_AWAKE: 2868 case IWL_MVM_PM_EVENT_ASLEEP: 2869 break; 2870 case IWL_MVM_PM_EVENT_UAPSD: 2871 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS); 2872 break; 2873 case IWL_MVM_PM_EVENT_PS_POLL: 2874 ieee80211_sta_pspoll(sta); 2875 break; 2876 default: 2877 break; 2878 } 2879 } 2880 2881 rcu_read_unlock(); 2882 } 2883 2884 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw, 2885 struct ieee80211_vif *vif, 2886 struct ieee80211_sta *sta) 2887 { 2888 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2889 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2890 2891 /* 2892 * This is called before mac80211 does RCU synchronisation, 2893 * so here we already invalidate our internal RCU-protected 2894 * station pointer. The rest of the code will thus no longer 2895 * be able to find the station this way, and we don't rely 2896 * on further RCU synchronisation after the sta_state() 2897 * callback deleted the station. 2898 */ 2899 mutex_lock(&mvm->mutex); 2900 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id])) 2901 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 2902 ERR_PTR(-ENOENT)); 2903 2904 mutex_unlock(&mvm->mutex); 2905 } 2906 2907 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2908 const u8 *bssid) 2909 { 2910 int i; 2911 2912 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 2913 struct iwl_mvm_tcm_mac *mdata; 2914 2915 mdata = &mvm->tcm.data[iwl_mvm_vif_from_mac80211(vif)->id]; 2916 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate); 2917 mdata->opened_rx_ba_sessions = false; 2918 } 2919 2920 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT)) 2921 return; 2922 2923 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) { 2924 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2925 return; 2926 } 2927 2928 if (!vif->p2p && 2929 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) { 2930 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2931 return; 2932 } 2933 2934 for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) { 2935 if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) { 2936 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2937 return; 2938 } 2939 } 2940 2941 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 2942 } 2943 2944 static void 2945 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm, 2946 struct ieee80211_vif *vif, u8 *peer_addr, 2947 enum nl80211_tdls_operation action) 2948 { 2949 struct iwl_fw_dbg_trigger_tlv *trig; 2950 struct iwl_fw_dbg_trigger_tdls *tdls_trig; 2951 2952 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 2953 FW_DBG_TRIGGER_TDLS); 2954 if (!trig) 2955 return; 2956 2957 tdls_trig = (void *)trig->data; 2958 2959 if (!(tdls_trig->action_bitmap & BIT(action))) 2960 return; 2961 2962 if (tdls_trig->peer_mode && 2963 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0) 2964 return; 2965 2966 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 2967 "TDLS event occurred, peer %pM, action %d", 2968 peer_addr, action); 2969 } 2970 2971 struct iwl_mvm_he_obss_narrow_bw_ru_data { 2972 bool tolerated; 2973 }; 2974 2975 static void iwl_mvm_check_he_obss_narrow_bw_ru_iter(struct wiphy *wiphy, 2976 struct cfg80211_bss *bss, 2977 void *_data) 2978 { 2979 struct iwl_mvm_he_obss_narrow_bw_ru_data *data = _data; 2980 const struct element *elem; 2981 2982 elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, bss->ies->data, 2983 bss->ies->len); 2984 2985 if (!elem || elem->datalen < 10 || 2986 !(elem->data[10] & 2987 WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT)) { 2988 data->tolerated = false; 2989 } 2990 } 2991 2992 static void iwl_mvm_check_he_obss_narrow_bw_ru(struct ieee80211_hw *hw, 2993 struct ieee80211_vif *vif) 2994 { 2995 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2996 struct iwl_mvm_he_obss_narrow_bw_ru_data iter_data = { 2997 .tolerated = true, 2998 }; 2999 3000 if (!(vif->bss_conf.chandef.chan->flags & IEEE80211_CHAN_RADAR)) { 3001 mvmvif->he_ru_2mhz_block = false; 3002 return; 3003 } 3004 3005 cfg80211_bss_iter(hw->wiphy, &vif->bss_conf.chandef, 3006 iwl_mvm_check_he_obss_narrow_bw_ru_iter, 3007 &iter_data); 3008 3009 /* 3010 * If there is at least one AP on radar channel that cannot 3011 * tolerate 26-tone RU UL OFDMA transmissions using HE TB PPDU. 3012 */ 3013 mvmvif->he_ru_2mhz_block = !iter_data.tolerated; 3014 } 3015 3016 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, 3017 struct ieee80211_vif *vif, 3018 struct ieee80211_sta *sta, 3019 enum ieee80211_sta_state old_state, 3020 enum ieee80211_sta_state new_state) 3021 { 3022 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3023 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3024 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3025 int ret; 3026 3027 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n", 3028 sta->addr, old_state, new_state); 3029 3030 /* this would be a mac80211 bug ... but don't crash */ 3031 if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) 3032 return -EINVAL; 3033 3034 /* 3035 * If we are in a STA removal flow and in DQA mode: 3036 * 3037 * This is after the sync_rcu part, so the queues have already been 3038 * flushed. No more TXs on their way in mac80211's path, and no more in 3039 * the queues. 3040 * Also, we won't be getting any new TX frames for this station. 3041 * What we might have are deferred TX frames that need to be taken care 3042 * of. 3043 * 3044 * Drop any still-queued deferred-frame before removing the STA, and 3045 * make sure the worker is no longer handling frames for this STA. 3046 */ 3047 if (old_state == IEEE80211_STA_NONE && 3048 new_state == IEEE80211_STA_NOTEXIST) { 3049 flush_work(&mvm->add_stream_wk); 3050 3051 /* 3052 * No need to make sure deferred TX indication is off since the 3053 * worker will already remove it if it was on 3054 */ 3055 } 3056 3057 mutex_lock(&mvm->mutex); 3058 /* track whether or not the station is associated */ 3059 mvm_sta->sta_state = new_state; 3060 3061 if (old_state == IEEE80211_STA_NOTEXIST && 3062 new_state == IEEE80211_STA_NONE) { 3063 /* 3064 * Firmware bug - it'll crash if the beacon interval is less 3065 * than 16. We can't avoid connecting at all, so refuse the 3066 * station state change, this will cause mac80211 to abandon 3067 * attempts to connect to this AP, and eventually wpa_s will 3068 * blacklist the AP... 3069 */ 3070 if (vif->type == NL80211_IFTYPE_STATION && 3071 vif->bss_conf.beacon_int < 16) { 3072 IWL_ERR(mvm, 3073 "AP %pM beacon interval is %d, refusing due to firmware bug!\n", 3074 sta->addr, vif->bss_conf.beacon_int); 3075 ret = -EINVAL; 3076 goto out_unlock; 3077 } 3078 3079 if (sta->tdls && 3080 (vif->p2p || 3081 iwl_mvm_tdls_sta_count(mvm, NULL) == 3082 IWL_MVM_TDLS_STA_COUNT || 3083 iwl_mvm_phy_ctx_count(mvm) > 1)) { 3084 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n"); 3085 ret = -EBUSY; 3086 goto out_unlock; 3087 } 3088 3089 ret = iwl_mvm_add_sta(mvm, vif, sta); 3090 if (sta->tdls && ret == 0) { 3091 iwl_mvm_recalc_tdls_state(mvm, vif, true); 3092 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3093 NL80211_TDLS_SETUP); 3094 } 3095 3096 sta->max_rc_amsdu_len = 1; 3097 } else if (old_state == IEEE80211_STA_NONE && 3098 new_state == IEEE80211_STA_AUTH) { 3099 /* 3100 * EBS may be disabled due to previous failures reported by FW. 3101 * Reset EBS status here assuming environment has been changed. 3102 */ 3103 mvm->last_ebs_successful = true; 3104 iwl_mvm_check_uapsd(mvm, vif, sta->addr); 3105 ret = 0; 3106 } else if (old_state == IEEE80211_STA_AUTH && 3107 new_state == IEEE80211_STA_ASSOC) { 3108 if (vif->type == NL80211_IFTYPE_AP) { 3109 vif->bss_conf.he_support = sta->he_cap.has_he; 3110 mvmvif->ap_assoc_sta_count++; 3111 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3112 if (vif->bss_conf.he_support && 3113 !iwlwifi_mod_params.disable_11ax) 3114 iwl_mvm_cfg_he_sta(mvm, vif, mvm_sta->sta_id); 3115 } else if (vif->type == NL80211_IFTYPE_STATION) { 3116 vif->bss_conf.he_support = sta->he_cap.has_he; 3117 3118 mvmvif->he_ru_2mhz_block = false; 3119 if (sta->he_cap.has_he) 3120 iwl_mvm_check_he_obss_narrow_bw_ru(hw, vif); 3121 3122 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3123 } 3124 3125 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3126 false); 3127 ret = iwl_mvm_update_sta(mvm, vif, sta); 3128 } else if (old_state == IEEE80211_STA_ASSOC && 3129 new_state == IEEE80211_STA_AUTHORIZED) { 3130 ret = 0; 3131 3132 /* we don't support TDLS during DCM */ 3133 if (iwl_mvm_phy_ctx_count(mvm) > 1) 3134 iwl_mvm_teardown_tdls_peers(mvm); 3135 3136 if (sta->tdls) 3137 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3138 NL80211_TDLS_ENABLE_LINK); 3139 3140 /* enable beacon filtering */ 3141 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 3142 3143 /* 3144 * Now that the station is authorized, i.e., keys were already 3145 * installed, need to indicate to the FW that 3146 * multicast data frames can be forwarded to the driver 3147 */ 3148 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3149 3150 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3151 true); 3152 } else if (old_state == IEEE80211_STA_AUTHORIZED && 3153 new_state == IEEE80211_STA_ASSOC) { 3154 /* Multicast data frames are no longer allowed */ 3155 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3156 3157 /* disable beacon filtering */ 3158 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 3159 WARN_ON(ret && 3160 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 3161 &mvm->status)); 3162 ret = 0; 3163 } else if (old_state == IEEE80211_STA_ASSOC && 3164 new_state == IEEE80211_STA_AUTH) { 3165 if (vif->type == NL80211_IFTYPE_AP) { 3166 mvmvif->ap_assoc_sta_count--; 3167 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3168 } 3169 ret = 0; 3170 } else if (old_state == IEEE80211_STA_AUTH && 3171 new_state == IEEE80211_STA_NONE) { 3172 ret = 0; 3173 } else if (old_state == IEEE80211_STA_NONE && 3174 new_state == IEEE80211_STA_NOTEXIST) { 3175 ret = iwl_mvm_rm_sta(mvm, vif, sta); 3176 if (sta->tdls) { 3177 iwl_mvm_recalc_tdls_state(mvm, vif, false); 3178 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3179 NL80211_TDLS_DISABLE_LINK); 3180 } 3181 3182 if (unlikely(ret && 3183 test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 3184 &mvm->status))) 3185 ret = 0; 3186 } else { 3187 ret = -EIO; 3188 } 3189 out_unlock: 3190 mutex_unlock(&mvm->mutex); 3191 3192 if (sta->tdls && ret == 0) { 3193 if (old_state == IEEE80211_STA_NOTEXIST && 3194 new_state == IEEE80211_STA_NONE) 3195 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID); 3196 else if (old_state == IEEE80211_STA_NONE && 3197 new_state == IEEE80211_STA_NOTEXIST) 3198 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID); 3199 } 3200 3201 return ret; 3202 } 3203 3204 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 3205 { 3206 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3207 3208 mvm->rts_threshold = value; 3209 3210 return 0; 3211 } 3212 3213 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw, 3214 struct ieee80211_vif *vif, 3215 struct ieee80211_sta *sta, u32 changed) 3216 { 3217 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3218 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3219 3220 if (changed & (IEEE80211_RC_BW_CHANGED | 3221 IEEE80211_RC_SUPP_RATES_CHANGED | 3222 IEEE80211_RC_NSS_CHANGED)) 3223 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3224 true); 3225 3226 if (vif->type == NL80211_IFTYPE_STATION && 3227 changed & IEEE80211_RC_NSS_CHANGED) 3228 iwl_mvm_sf_update(mvm, vif, false); 3229 } 3230 3231 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw, 3232 struct ieee80211_vif *vif, u16 ac, 3233 const struct ieee80211_tx_queue_params *params) 3234 { 3235 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3236 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3237 3238 mvmvif->queue_params[ac] = *params; 3239 3240 /* 3241 * No need to update right away, we'll get BSS_CHANGED_QOS 3242 * The exception is P2P_DEVICE interface which needs immediate update. 3243 */ 3244 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 3245 int ret; 3246 3247 mutex_lock(&mvm->mutex); 3248 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3249 mutex_unlock(&mvm->mutex); 3250 return ret; 3251 } 3252 return 0; 3253 } 3254 3255 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, 3256 struct ieee80211_vif *vif, 3257 u16 req_duration) 3258 { 3259 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3260 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS; 3261 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS; 3262 3263 if (req_duration > duration) 3264 duration = req_duration; 3265 3266 mutex_lock(&mvm->mutex); 3267 /* Try really hard to protect the session and hear a beacon 3268 * The new session protection command allows us to protect the 3269 * session for a much longer time since the firmware will internally 3270 * create two events: a 300TU one with a very high priority that 3271 * won't be fragmented which should be enough for 99% of the cases, 3272 * and another one (which we configure here to be 900TU long) which 3273 * will have a slightly lower priority, but more importantly, can be 3274 * fragmented so that it'll allow other activities to run. 3275 */ 3276 if (fw_has_capa(&mvm->fw->ucode_capa, 3277 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) 3278 iwl_mvm_schedule_session_protection(mvm, vif, 900, 3279 min_duration); 3280 else 3281 iwl_mvm_protect_session(mvm, vif, duration, 3282 min_duration, 500, false); 3283 mutex_unlock(&mvm->mutex); 3284 } 3285 3286 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw, 3287 struct ieee80211_vif *vif, 3288 struct cfg80211_sched_scan_request *req, 3289 struct ieee80211_scan_ies *ies) 3290 { 3291 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3292 3293 int ret; 3294 3295 mutex_lock(&mvm->mutex); 3296 3297 if (!vif->bss_conf.idle) { 3298 ret = -EBUSY; 3299 goto out; 3300 } 3301 3302 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED); 3303 3304 out: 3305 mutex_unlock(&mvm->mutex); 3306 return ret; 3307 } 3308 3309 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw, 3310 struct ieee80211_vif *vif) 3311 { 3312 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3313 int ret; 3314 3315 mutex_lock(&mvm->mutex); 3316 3317 /* Due to a race condition, it's possible that mac80211 asks 3318 * us to stop a sched_scan when it's already stopped. This 3319 * can happen, for instance, if we stopped the scan ourselves, 3320 * called ieee80211_sched_scan_stopped() and the userspace called 3321 * stop sched scan scan before ieee80211_sched_scan_stopped_work() 3322 * could run. To handle this, simply return if the scan is 3323 * not running. 3324 */ 3325 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) { 3326 mutex_unlock(&mvm->mutex); 3327 return 0; 3328 } 3329 3330 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false); 3331 mutex_unlock(&mvm->mutex); 3332 iwl_mvm_wait_for_async_handlers(mvm); 3333 3334 return ret; 3335 } 3336 3337 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 3338 enum set_key_cmd cmd, 3339 struct ieee80211_vif *vif, 3340 struct ieee80211_sta *sta, 3341 struct ieee80211_key_conf *key) 3342 { 3343 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3344 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3345 struct iwl_mvm_sta *mvmsta; 3346 struct iwl_mvm_key_pn *ptk_pn; 3347 int keyidx = key->keyidx; 3348 int ret, i; 3349 u8 key_offset; 3350 3351 if (iwlwifi_mod_params.swcrypto) { 3352 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n"); 3353 return -EOPNOTSUPP; 3354 } 3355 3356 switch (key->cipher) { 3357 case WLAN_CIPHER_SUITE_TKIP: 3358 if (!mvm->trans->trans_cfg->gen2) { 3359 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; 3360 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3361 } else if (vif->type == NL80211_IFTYPE_STATION) { 3362 key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE; 3363 } else { 3364 IWL_DEBUG_MAC80211(mvm, "Use SW encryption for TKIP\n"); 3365 return -EOPNOTSUPP; 3366 } 3367 break; 3368 case WLAN_CIPHER_SUITE_CCMP: 3369 case WLAN_CIPHER_SUITE_GCMP: 3370 case WLAN_CIPHER_SUITE_GCMP_256: 3371 if (!iwl_mvm_has_new_tx_api(mvm)) 3372 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3373 break; 3374 case WLAN_CIPHER_SUITE_AES_CMAC: 3375 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3376 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3377 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE)); 3378 break; 3379 case WLAN_CIPHER_SUITE_WEP40: 3380 case WLAN_CIPHER_SUITE_WEP104: 3381 if (vif->type == NL80211_IFTYPE_STATION) 3382 break; 3383 if (iwl_mvm_has_new_tx_api(mvm)) 3384 return -EOPNOTSUPP; 3385 /* support HW crypto on TX */ 3386 return 0; 3387 default: 3388 /* currently FW supports only one optional cipher scheme */ 3389 if (hw->n_cipher_schemes && 3390 hw->cipher_schemes->cipher == key->cipher) 3391 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3392 else 3393 return -EOPNOTSUPP; 3394 } 3395 3396 switch (cmd) { 3397 case SET_KEY: 3398 if ((vif->type == NL80211_IFTYPE_ADHOC || 3399 vif->type == NL80211_IFTYPE_AP) && !sta) { 3400 /* 3401 * GTK on AP interface is a TX-only key, return 0; 3402 * on IBSS they're per-station and because we're lazy 3403 * we don't support them for RX, so do the same. 3404 * CMAC/GMAC in AP/IBSS modes must be done in software. 3405 */ 3406 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3407 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3408 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3409 ret = -EOPNOTSUPP; 3410 else 3411 ret = 0; 3412 3413 if (key->cipher != WLAN_CIPHER_SUITE_GCMP && 3414 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 && 3415 !iwl_mvm_has_new_tx_api(mvm)) { 3416 key->hw_key_idx = STA_KEY_IDX_INVALID; 3417 break; 3418 } 3419 3420 if (!mvmvif->ap_ibss_active) { 3421 for (i = 0; 3422 i < ARRAY_SIZE(mvmvif->ap_early_keys); 3423 i++) { 3424 if (!mvmvif->ap_early_keys[i]) { 3425 mvmvif->ap_early_keys[i] = key; 3426 break; 3427 } 3428 } 3429 3430 if (i >= ARRAY_SIZE(mvmvif->ap_early_keys)) 3431 ret = -ENOSPC; 3432 3433 break; 3434 } 3435 } 3436 3437 /* During FW restart, in order to restore the state as it was, 3438 * don't try to reprogram keys we previously failed for. 3439 */ 3440 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3441 key->hw_key_idx == STA_KEY_IDX_INVALID) { 3442 IWL_DEBUG_MAC80211(mvm, 3443 "skip invalid idx key programming during restart\n"); 3444 ret = 0; 3445 break; 3446 } 3447 3448 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3449 sta && iwl_mvm_has_new_rx_api(mvm) && 3450 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3451 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3452 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3453 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3454 struct ieee80211_key_seq seq; 3455 int tid, q; 3456 3457 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3458 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx])); 3459 ptk_pn = kzalloc(struct_size(ptk_pn, q, 3460 mvm->trans->num_rx_queues), 3461 GFP_KERNEL); 3462 if (!ptk_pn) { 3463 ret = -ENOMEM; 3464 break; 3465 } 3466 3467 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 3468 ieee80211_get_key_rx_seq(key, tid, &seq); 3469 for (q = 0; q < mvm->trans->num_rx_queues; q++) 3470 memcpy(ptk_pn->q[q].pn[tid], 3471 seq.ccmp.pn, 3472 IEEE80211_CCMP_PN_LEN); 3473 } 3474 3475 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn); 3476 } 3477 3478 /* in HW restart reuse the index, otherwise request a new one */ 3479 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 3480 key_offset = key->hw_key_idx; 3481 else 3482 key_offset = STA_KEY_IDX_INVALID; 3483 3484 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); 3485 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset); 3486 if (ret) { 3487 IWL_WARN(mvm, "set key failed\n"); 3488 key->hw_key_idx = STA_KEY_IDX_INVALID; 3489 /* 3490 * can't add key for RX, but we don't need it 3491 * in the device for TX so still return 0, 3492 * unless we have new TX API where we cannot 3493 * put key material into the TX_CMD 3494 */ 3495 if (iwl_mvm_has_new_tx_api(mvm)) 3496 ret = -EOPNOTSUPP; 3497 else 3498 ret = 0; 3499 } 3500 3501 break; 3502 case DISABLE_KEY: 3503 ret = -ENOENT; 3504 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) { 3505 if (mvmvif->ap_early_keys[i] == key) { 3506 mvmvif->ap_early_keys[i] = NULL; 3507 ret = 0; 3508 } 3509 } 3510 3511 /* found in pending list - don't do anything else */ 3512 if (ret == 0) 3513 break; 3514 3515 if (key->hw_key_idx == STA_KEY_IDX_INVALID) { 3516 ret = 0; 3517 break; 3518 } 3519 3520 if (sta && iwl_mvm_has_new_rx_api(mvm) && 3521 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3522 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3523 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3524 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3525 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3526 ptk_pn = rcu_dereference_protected( 3527 mvmsta->ptk_pn[keyidx], 3528 lockdep_is_held(&mvm->mutex)); 3529 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL); 3530 if (ptk_pn) 3531 kfree_rcu(ptk_pn, rcu_head); 3532 } 3533 3534 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n"); 3535 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key); 3536 break; 3537 default: 3538 ret = -EINVAL; 3539 } 3540 3541 return ret; 3542 } 3543 3544 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 3545 enum set_key_cmd cmd, 3546 struct ieee80211_vif *vif, 3547 struct ieee80211_sta *sta, 3548 struct ieee80211_key_conf *key) 3549 { 3550 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3551 int ret; 3552 3553 mutex_lock(&mvm->mutex); 3554 ret = __iwl_mvm_mac_set_key(hw, cmd, vif, sta, key); 3555 mutex_unlock(&mvm->mutex); 3556 3557 return ret; 3558 } 3559 3560 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, 3561 struct ieee80211_vif *vif, 3562 struct ieee80211_key_conf *keyconf, 3563 struct ieee80211_sta *sta, 3564 u32 iv32, u16 *phase1key) 3565 { 3566 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3567 3568 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID) 3569 return; 3570 3571 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key); 3572 } 3573 3574 3575 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait, 3576 struct iwl_rx_packet *pkt, void *data) 3577 { 3578 struct iwl_mvm *mvm = 3579 container_of(notif_wait, struct iwl_mvm, notif_wait); 3580 struct iwl_hs20_roc_res *resp; 3581 int resp_len = iwl_rx_packet_payload_len(pkt); 3582 struct iwl_mvm_time_event_data *te_data = data; 3583 3584 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD)) 3585 return true; 3586 3587 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 3588 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n"); 3589 return true; 3590 } 3591 3592 resp = (void *)pkt->data; 3593 3594 IWL_DEBUG_TE(mvm, 3595 "Aux ROC: Received response from ucode: status=%d uid=%d\n", 3596 resp->status, resp->event_unique_id); 3597 3598 te_data->uid = le32_to_cpu(resp->event_unique_id); 3599 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n", 3600 te_data->uid); 3601 3602 spin_lock_bh(&mvm->time_event_lock); 3603 list_add_tail(&te_data->list, &mvm->aux_roc_te_list); 3604 spin_unlock_bh(&mvm->time_event_lock); 3605 3606 return true; 3607 } 3608 3609 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100) 3610 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200) 3611 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600) 3612 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20) 3613 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10) 3614 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm, 3615 struct ieee80211_channel *channel, 3616 struct ieee80211_vif *vif, 3617 int duration) 3618 { 3619 int res; 3620 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3621 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data; 3622 static const u16 time_event_response[] = { HOT_SPOT_CMD }; 3623 struct iwl_notification_wait wait_time_event; 3624 u32 dtim_interval = vif->bss_conf.dtim_period * 3625 vif->bss_conf.beacon_int; 3626 u32 req_dur, delay; 3627 struct iwl_hs20_roc_req aux_roc_req = { 3628 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 3629 .id_and_color = 3630 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)), 3631 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id), 3632 }; 3633 struct iwl_hs20_roc_req_tail *tail = iwl_mvm_chan_info_cmd_tail(mvm, 3634 &aux_roc_req.channel_info); 3635 u16 len = sizeof(aux_roc_req) - iwl_mvm_chan_info_padding(mvm); 3636 3637 /* Set the channel info data */ 3638 iwl_mvm_set_chan_info(mvm, &aux_roc_req.channel_info, channel->hw_value, 3639 iwl_mvm_phy_band_from_nl80211(channel->band), 3640 PHY_VHT_CHANNEL_MODE20, 3641 0); 3642 3643 /* Set the time and duration */ 3644 tail->apply_time = cpu_to_le32(iwl_mvm_get_systime(mvm)); 3645 3646 delay = AUX_ROC_MIN_DELAY; 3647 req_dur = MSEC_TO_TU(duration); 3648 3649 /* 3650 * If we are associated we want the delay time to be at least one 3651 * dtim interval so that the FW can wait until after the DTIM and 3652 * then start the time event, this will potentially allow us to 3653 * remain off-channel for the max duration. 3654 * Since we want to use almost a whole dtim interval we would also 3655 * like the delay to be for 2-3 dtim intervals, in case there are 3656 * other time events with higher priority. 3657 */ 3658 if (vif->bss_conf.assoc) { 3659 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY); 3660 /* We cannot remain off-channel longer than the DTIM interval */ 3661 if (dtim_interval <= req_dur) { 3662 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER; 3663 if (req_dur <= AUX_ROC_MIN_DURATION) 3664 req_dur = dtim_interval - 3665 AUX_ROC_MIN_SAFETY_BUFFER; 3666 } 3667 } 3668 3669 tail->duration = cpu_to_le32(req_dur); 3670 tail->apply_time_max_delay = cpu_to_le32(delay); 3671 3672 IWL_DEBUG_TE(mvm, 3673 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n", 3674 channel->hw_value, req_dur, duration, delay, 3675 dtim_interval); 3676 /* Set the node address */ 3677 memcpy(tail->node_addr, vif->addr, ETH_ALEN); 3678 3679 lockdep_assert_held(&mvm->mutex); 3680 3681 spin_lock_bh(&mvm->time_event_lock); 3682 3683 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) { 3684 spin_unlock_bh(&mvm->time_event_lock); 3685 return -EIO; 3686 } 3687 3688 te_data->vif = vif; 3689 te_data->duration = duration; 3690 te_data->id = HOT_SPOT_CMD; 3691 3692 spin_unlock_bh(&mvm->time_event_lock); 3693 3694 /* 3695 * Use a notification wait, which really just processes the 3696 * command response and doesn't wait for anything, in order 3697 * to be able to process the response and get the UID inside 3698 * the RX path. Using CMD_WANT_SKB doesn't work because it 3699 * stores the buffer and then wakes up this thread, by which 3700 * time another notification (that the time event started) 3701 * might already be processed unsuccessfully. 3702 */ 3703 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event, 3704 time_event_response, 3705 ARRAY_SIZE(time_event_response), 3706 iwl_mvm_rx_aux_roc, te_data); 3707 3708 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, len, 3709 &aux_roc_req); 3710 3711 if (res) { 3712 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res); 3713 iwl_remove_notification(&mvm->notif_wait, &wait_time_event); 3714 goto out_clear_te; 3715 } 3716 3717 /* No need to wait for anything, so just pass 1 (0 isn't valid) */ 3718 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1); 3719 /* should never fail */ 3720 WARN_ON_ONCE(res); 3721 3722 if (res) { 3723 out_clear_te: 3724 spin_lock_bh(&mvm->time_event_lock); 3725 iwl_mvm_te_clear_data(mvm, te_data); 3726 spin_unlock_bh(&mvm->time_event_lock); 3727 } 3728 3729 return res; 3730 } 3731 3732 static int iwl_mvm_roc(struct ieee80211_hw *hw, 3733 struct ieee80211_vif *vif, 3734 struct ieee80211_channel *channel, 3735 int duration, 3736 enum ieee80211_roc_type type) 3737 { 3738 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3739 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3740 struct cfg80211_chan_def chandef; 3741 struct iwl_mvm_phy_ctxt *phy_ctxt; 3742 int ret, i; 3743 3744 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value, 3745 duration, type); 3746 3747 /* 3748 * Flush the done work, just in case it's still pending, so that 3749 * the work it does can complete and we can accept new frames. 3750 */ 3751 flush_work(&mvm->roc_done_wk); 3752 3753 mutex_lock(&mvm->mutex); 3754 3755 switch (vif->type) { 3756 case NL80211_IFTYPE_STATION: 3757 if (fw_has_capa(&mvm->fw->ucode_capa, 3758 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) { 3759 /* Use aux roc framework (HS20) */ 3760 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel, 3761 vif, duration); 3762 goto out_unlock; 3763 } 3764 IWL_ERR(mvm, "hotspot not supported\n"); 3765 ret = -EINVAL; 3766 goto out_unlock; 3767 case NL80211_IFTYPE_P2P_DEVICE: 3768 /* handle below */ 3769 break; 3770 default: 3771 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type); 3772 ret = -EINVAL; 3773 goto out_unlock; 3774 } 3775 3776 for (i = 0; i < NUM_PHY_CTX; i++) { 3777 phy_ctxt = &mvm->phy_ctxts[i]; 3778 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt) 3779 continue; 3780 3781 if (phy_ctxt->ref && channel == phy_ctxt->channel) { 3782 /* 3783 * Unbind the P2P_DEVICE from the current PHY context, 3784 * and if the PHY context is not used remove it. 3785 */ 3786 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3787 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3788 goto out_unlock; 3789 3790 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3791 3792 /* Bind the P2P_DEVICE to the current PHY Context */ 3793 mvmvif->phy_ctxt = phy_ctxt; 3794 3795 ret = iwl_mvm_binding_add_vif(mvm, vif); 3796 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3797 goto out_unlock; 3798 3799 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3800 goto schedule_time_event; 3801 } 3802 } 3803 3804 /* Need to update the PHY context only if the ROC channel changed */ 3805 if (channel == mvmvif->phy_ctxt->channel) 3806 goto schedule_time_event; 3807 3808 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT); 3809 3810 /* 3811 * Change the PHY context configuration as it is currently referenced 3812 * only by the P2P Device MAC 3813 */ 3814 if (mvmvif->phy_ctxt->ref == 1) { 3815 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt, 3816 &chandef, 1, 1); 3817 if (ret) 3818 goto out_unlock; 3819 } else { 3820 /* 3821 * The PHY context is shared with other MACs. Need to remove the 3822 * P2P Device from the binding, allocate an new PHY context and 3823 * create a new binding 3824 */ 3825 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3826 if (!phy_ctxt) { 3827 ret = -ENOSPC; 3828 goto out_unlock; 3829 } 3830 3831 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef, 3832 1, 1); 3833 if (ret) { 3834 IWL_ERR(mvm, "Failed to change PHY context\n"); 3835 goto out_unlock; 3836 } 3837 3838 /* Unbind the P2P_DEVICE from the current PHY context */ 3839 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3840 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3841 goto out_unlock; 3842 3843 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3844 3845 /* Bind the P2P_DEVICE to the new allocated PHY context */ 3846 mvmvif->phy_ctxt = phy_ctxt; 3847 3848 ret = iwl_mvm_binding_add_vif(mvm, vif); 3849 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3850 goto out_unlock; 3851 3852 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3853 } 3854 3855 schedule_time_event: 3856 /* Schedule the time events */ 3857 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type); 3858 3859 out_unlock: 3860 mutex_unlock(&mvm->mutex); 3861 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3862 return ret; 3863 } 3864 3865 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw, 3866 struct ieee80211_vif *vif) 3867 { 3868 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3869 3870 IWL_DEBUG_MAC80211(mvm, "enter\n"); 3871 3872 mutex_lock(&mvm->mutex); 3873 iwl_mvm_stop_roc(mvm, vif); 3874 mutex_unlock(&mvm->mutex); 3875 3876 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3877 return 0; 3878 } 3879 3880 struct iwl_mvm_ftm_responder_iter_data { 3881 bool responder; 3882 struct ieee80211_chanctx_conf *ctx; 3883 }; 3884 3885 static void iwl_mvm_ftm_responder_chanctx_iter(void *_data, u8 *mac, 3886 struct ieee80211_vif *vif) 3887 { 3888 struct iwl_mvm_ftm_responder_iter_data *data = _data; 3889 3890 if (rcu_access_pointer(vif->chanctx_conf) == data->ctx && 3891 vif->type == NL80211_IFTYPE_AP && vif->bss_conf.ftmr_params) 3892 data->responder = true; 3893 } 3894 3895 static bool iwl_mvm_is_ftm_responder_chanctx(struct iwl_mvm *mvm, 3896 struct ieee80211_chanctx_conf *ctx) 3897 { 3898 struct iwl_mvm_ftm_responder_iter_data data = { 3899 .responder = false, 3900 .ctx = ctx, 3901 }; 3902 3903 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 3904 IEEE80211_IFACE_ITER_NORMAL, 3905 iwl_mvm_ftm_responder_chanctx_iter, 3906 &data); 3907 return data.responder; 3908 } 3909 3910 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm, 3911 struct ieee80211_chanctx_conf *ctx) 3912 { 3913 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3914 struct iwl_mvm_phy_ctxt *phy_ctxt; 3915 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx); 3916 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def; 3917 int ret; 3918 3919 lockdep_assert_held(&mvm->mutex); 3920 3921 IWL_DEBUG_MAC80211(mvm, "Add channel context\n"); 3922 3923 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3924 if (!phy_ctxt) { 3925 ret = -ENOSPC; 3926 goto out; 3927 } 3928 3929 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def, 3930 ctx->rx_chains_static, 3931 ctx->rx_chains_dynamic); 3932 if (ret) { 3933 IWL_ERR(mvm, "Failed to add PHY context\n"); 3934 goto out; 3935 } 3936 3937 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt); 3938 *phy_ctxt_id = phy_ctxt->id; 3939 out: 3940 return ret; 3941 } 3942 3943 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw, 3944 struct ieee80211_chanctx_conf *ctx) 3945 { 3946 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3947 int ret; 3948 3949 mutex_lock(&mvm->mutex); 3950 ret = __iwl_mvm_add_chanctx(mvm, ctx); 3951 mutex_unlock(&mvm->mutex); 3952 3953 return ret; 3954 } 3955 3956 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm, 3957 struct ieee80211_chanctx_conf *ctx) 3958 { 3959 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3960 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3961 3962 lockdep_assert_held(&mvm->mutex); 3963 3964 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt); 3965 } 3966 3967 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw, 3968 struct ieee80211_chanctx_conf *ctx) 3969 { 3970 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3971 3972 mutex_lock(&mvm->mutex); 3973 __iwl_mvm_remove_chanctx(mvm, ctx); 3974 mutex_unlock(&mvm->mutex); 3975 } 3976 3977 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw, 3978 struct ieee80211_chanctx_conf *ctx, 3979 u32 changed) 3980 { 3981 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3982 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3983 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3984 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx); 3985 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def; 3986 3987 if (WARN_ONCE((phy_ctxt->ref > 1) && 3988 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH | 3989 IEEE80211_CHANCTX_CHANGE_RX_CHAINS | 3990 IEEE80211_CHANCTX_CHANGE_RADAR | 3991 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)), 3992 "Cannot change PHY. Ref=%d, changed=0x%X\n", 3993 phy_ctxt->ref, changed)) 3994 return; 3995 3996 mutex_lock(&mvm->mutex); 3997 3998 /* we are only changing the min_width, may be a noop */ 3999 if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) { 4000 if (phy_ctxt->width == def->width) 4001 goto out_unlock; 4002 4003 /* we are just toggling between 20_NOHT and 20 */ 4004 if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 && 4005 def->width <= NL80211_CHAN_WIDTH_20) 4006 goto out_unlock; 4007 } 4008 4009 iwl_mvm_bt_coex_vif_change(mvm); 4010 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def, 4011 ctx->rx_chains_static, 4012 ctx->rx_chains_dynamic); 4013 4014 out_unlock: 4015 mutex_unlock(&mvm->mutex); 4016 } 4017 4018 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm, 4019 struct ieee80211_vif *vif, 4020 struct ieee80211_chanctx_conf *ctx, 4021 bool switching_chanctx) 4022 { 4023 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4024 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 4025 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4026 int ret; 4027 4028 lockdep_assert_held(&mvm->mutex); 4029 4030 mvmvif->phy_ctxt = phy_ctxt; 4031 4032 switch (vif->type) { 4033 case NL80211_IFTYPE_AP: 4034 /* only needed if we're switching chanctx (i.e. during CSA) */ 4035 if (switching_chanctx) { 4036 mvmvif->ap_ibss_active = true; 4037 break; 4038 } 4039 /* fall through */ 4040 case NL80211_IFTYPE_ADHOC: 4041 /* 4042 * The AP binding flow is handled as part of the start_ap flow 4043 * (in bss_info_changed), similarly for IBSS. 4044 */ 4045 ret = 0; 4046 goto out; 4047 case NL80211_IFTYPE_STATION: 4048 mvmvif->csa_bcn_pending = false; 4049 break; 4050 case NL80211_IFTYPE_MONITOR: 4051 /* always disable PS when a monitor interface is active */ 4052 mvmvif->ps_disabled = true; 4053 break; 4054 default: 4055 ret = -EINVAL; 4056 goto out; 4057 } 4058 4059 ret = iwl_mvm_binding_add_vif(mvm, vif); 4060 if (ret) 4061 goto out; 4062 4063 /* 4064 * Power state must be updated before quotas, 4065 * otherwise fw will complain. 4066 */ 4067 iwl_mvm_power_update_mac(mvm); 4068 4069 /* Setting the quota at this stage is only required for monitor 4070 * interfaces. For the other types, the bss_info changed flow 4071 * will handle quota settings. 4072 */ 4073 if (vif->type == NL80211_IFTYPE_MONITOR) { 4074 mvmvif->monitor_active = true; 4075 ret = iwl_mvm_update_quotas(mvm, false, NULL); 4076 if (ret) 4077 goto out_remove_binding; 4078 4079 ret = iwl_mvm_add_snif_sta(mvm, vif); 4080 if (ret) 4081 goto out_remove_binding; 4082 4083 } 4084 4085 /* Handle binding during CSA */ 4086 if (vif->type == NL80211_IFTYPE_AP) { 4087 iwl_mvm_update_quotas(mvm, false, NULL); 4088 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 4089 } 4090 4091 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) { 4092 mvmvif->csa_bcn_pending = true; 4093 4094 if (!fw_has_capa(&mvm->fw->ucode_capa, 4095 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { 4096 u32 duration = 3 * vif->bss_conf.beacon_int; 4097 4098 /* Protect the session to make sure we hear the first 4099 * beacon on the new channel. 4100 */ 4101 iwl_mvm_protect_session(mvm, vif, duration, duration, 4102 vif->bss_conf.beacon_int / 2, 4103 true); 4104 } 4105 4106 iwl_mvm_update_quotas(mvm, false, NULL); 4107 } 4108 4109 goto out; 4110 4111 out_remove_binding: 4112 iwl_mvm_binding_remove_vif(mvm, vif); 4113 iwl_mvm_power_update_mac(mvm); 4114 out: 4115 if (ret) 4116 mvmvif->phy_ctxt = NULL; 4117 return ret; 4118 } 4119 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw, 4120 struct ieee80211_vif *vif, 4121 struct ieee80211_chanctx_conf *ctx) 4122 { 4123 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4124 int ret; 4125 4126 mutex_lock(&mvm->mutex); 4127 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false); 4128 mutex_unlock(&mvm->mutex); 4129 4130 return ret; 4131 } 4132 4133 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm, 4134 struct ieee80211_vif *vif, 4135 struct ieee80211_chanctx_conf *ctx, 4136 bool switching_chanctx) 4137 { 4138 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4139 struct ieee80211_vif *disabled_vif = NULL; 4140 4141 lockdep_assert_held(&mvm->mutex); 4142 4143 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); 4144 4145 switch (vif->type) { 4146 case NL80211_IFTYPE_ADHOC: 4147 goto out; 4148 case NL80211_IFTYPE_MONITOR: 4149 mvmvif->monitor_active = false; 4150 mvmvif->ps_disabled = false; 4151 iwl_mvm_rm_snif_sta(mvm, vif); 4152 break; 4153 case NL80211_IFTYPE_AP: 4154 /* This part is triggered only during CSA */ 4155 if (!switching_chanctx || !mvmvif->ap_ibss_active) 4156 goto out; 4157 4158 mvmvif->csa_countdown = false; 4159 4160 /* Set CS bit on all the stations */ 4161 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true); 4162 4163 /* Save blocked iface, the timeout is set on the next beacon */ 4164 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif); 4165 4166 mvmvif->ap_ibss_active = false; 4167 break; 4168 case NL80211_IFTYPE_STATION: 4169 if (!switching_chanctx) 4170 break; 4171 4172 disabled_vif = vif; 4173 4174 if (!fw_has_capa(&mvm->fw->ucode_capa, 4175 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) 4176 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL); 4177 break; 4178 default: 4179 break; 4180 } 4181 4182 iwl_mvm_update_quotas(mvm, false, disabled_vif); 4183 iwl_mvm_binding_remove_vif(mvm, vif); 4184 4185 out: 4186 mvmvif->phy_ctxt = NULL; 4187 iwl_mvm_power_update_mac(mvm); 4188 } 4189 4190 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, 4191 struct ieee80211_vif *vif, 4192 struct ieee80211_chanctx_conf *ctx) 4193 { 4194 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4195 4196 mutex_lock(&mvm->mutex); 4197 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false); 4198 mutex_unlock(&mvm->mutex); 4199 } 4200 4201 static int 4202 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm, 4203 struct ieee80211_vif_chanctx_switch *vifs) 4204 { 4205 int ret; 4206 4207 mutex_lock(&mvm->mutex); 4208 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 4209 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx); 4210 4211 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx); 4212 if (ret) { 4213 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n"); 4214 goto out_reassign; 4215 } 4216 4217 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 4218 true); 4219 if (ret) { 4220 IWL_ERR(mvm, 4221 "failed to assign new_ctx during channel switch\n"); 4222 goto out_remove; 4223 } 4224 4225 /* we don't support TDLS during DCM - can be caused by channel switch */ 4226 if (iwl_mvm_phy_ctx_count(mvm) > 1) 4227 iwl_mvm_teardown_tdls_peers(mvm); 4228 4229 goto out; 4230 4231 out_remove: 4232 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx); 4233 4234 out_reassign: 4235 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) { 4236 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n"); 4237 goto out_restart; 4238 } 4239 4240 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 4241 true)) { 4242 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 4243 goto out_restart; 4244 } 4245 4246 goto out; 4247 4248 out_restart: 4249 /* things keep failing, better restart the hw */ 4250 iwl_mvm_nic_restart(mvm, false); 4251 4252 out: 4253 mutex_unlock(&mvm->mutex); 4254 4255 return ret; 4256 } 4257 4258 static int 4259 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm, 4260 struct ieee80211_vif_chanctx_switch *vifs) 4261 { 4262 int ret; 4263 4264 mutex_lock(&mvm->mutex); 4265 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 4266 4267 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 4268 true); 4269 if (ret) { 4270 IWL_ERR(mvm, 4271 "failed to assign new_ctx during channel switch\n"); 4272 goto out_reassign; 4273 } 4274 4275 goto out; 4276 4277 out_reassign: 4278 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 4279 true)) { 4280 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 4281 goto out_restart; 4282 } 4283 4284 goto out; 4285 4286 out_restart: 4287 /* things keep failing, better restart the hw */ 4288 iwl_mvm_nic_restart(mvm, false); 4289 4290 out: 4291 mutex_unlock(&mvm->mutex); 4292 4293 return ret; 4294 } 4295 4296 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, 4297 struct ieee80211_vif_chanctx_switch *vifs, 4298 int n_vifs, 4299 enum ieee80211_chanctx_switch_mode mode) 4300 { 4301 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4302 int ret; 4303 4304 /* we only support a single-vif right now */ 4305 if (n_vifs > 1) 4306 return -EOPNOTSUPP; 4307 4308 switch (mode) { 4309 case CHANCTX_SWMODE_SWAP_CONTEXTS: 4310 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs); 4311 break; 4312 case CHANCTX_SWMODE_REASSIGN_VIF: 4313 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs); 4314 break; 4315 default: 4316 ret = -EOPNOTSUPP; 4317 break; 4318 } 4319 4320 return ret; 4321 } 4322 4323 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw) 4324 { 4325 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4326 4327 return mvm->ibss_manager; 4328 } 4329 4330 static int iwl_mvm_set_tim(struct ieee80211_hw *hw, 4331 struct ieee80211_sta *sta, 4332 bool set) 4333 { 4334 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4335 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4336 4337 if (!mvm_sta || !mvm_sta->vif) { 4338 IWL_ERR(mvm, "Station is not associated to a vif\n"); 4339 return -EINVAL; 4340 } 4341 4342 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif); 4343 } 4344 4345 #ifdef CONFIG_NL80211_TESTMODE 4346 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = { 4347 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 }, 4348 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 }, 4349 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 }, 4350 }; 4351 4352 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm, 4353 struct ieee80211_vif *vif, 4354 void *data, int len) 4355 { 4356 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1]; 4357 int err; 4358 u32 noa_duration; 4359 4360 err = nla_parse_deprecated(tb, IWL_MVM_TM_ATTR_MAX, data, len, 4361 iwl_mvm_tm_policy, NULL); 4362 if (err) 4363 return err; 4364 4365 if (!tb[IWL_MVM_TM_ATTR_CMD]) 4366 return -EINVAL; 4367 4368 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) { 4369 case IWL_MVM_TM_CMD_SET_NOA: 4370 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p || 4371 !vif->bss_conf.enable_beacon || 4372 !tb[IWL_MVM_TM_ATTR_NOA_DURATION]) 4373 return -EINVAL; 4374 4375 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]); 4376 if (noa_duration >= vif->bss_conf.beacon_int) 4377 return -EINVAL; 4378 4379 mvm->noa_duration = noa_duration; 4380 mvm->noa_vif = vif; 4381 4382 return iwl_mvm_update_quotas(mvm, true, NULL); 4383 case IWL_MVM_TM_CMD_SET_BEACON_FILTER: 4384 /* must be associated client vif - ignore authorized */ 4385 if (!vif || vif->type != NL80211_IFTYPE_STATION || 4386 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period || 4387 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]) 4388 return -EINVAL; 4389 4390 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])) 4391 return iwl_mvm_enable_beacon_filter(mvm, vif, 0); 4392 return iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4393 } 4394 4395 return -EOPNOTSUPP; 4396 } 4397 4398 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw, 4399 struct ieee80211_vif *vif, 4400 void *data, int len) 4401 { 4402 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4403 int err; 4404 4405 mutex_lock(&mvm->mutex); 4406 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len); 4407 mutex_unlock(&mvm->mutex); 4408 4409 return err; 4410 } 4411 #endif 4412 4413 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw, 4414 struct ieee80211_vif *vif, 4415 struct ieee80211_channel_switch *chsw) 4416 { 4417 /* By implementing this operation, we prevent mac80211 from 4418 * starting its own channel switch timer, so that we can call 4419 * ieee80211_chswitch_done() ourselves at the right time 4420 * (which is when the absence time event starts). 4421 */ 4422 4423 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw), 4424 "dummy channel switch op\n"); 4425 } 4426 4427 static int iwl_mvm_schedule_client_csa(struct iwl_mvm *mvm, 4428 struct ieee80211_vif *vif, 4429 struct ieee80211_channel_switch *chsw) 4430 { 4431 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4432 struct iwl_chan_switch_te_cmd cmd = { 4433 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 4434 mvmvif->color)), 4435 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 4436 .tsf = cpu_to_le32(chsw->timestamp), 4437 .cs_count = chsw->count, 4438 .cs_mode = chsw->block_tx, 4439 }; 4440 4441 lockdep_assert_held(&mvm->mutex); 4442 4443 if (chsw->delay) 4444 cmd.cs_delayed_bcn_count = 4445 DIV_ROUND_UP(chsw->delay, vif->bss_conf.beacon_int); 4446 4447 return iwl_mvm_send_cmd_pdu(mvm, 4448 WIDE_ID(MAC_CONF_GROUP, 4449 CHANNEL_SWITCH_TIME_EVENT_CMD), 4450 0, sizeof(cmd), &cmd); 4451 } 4452 4453 static int iwl_mvm_old_pre_chan_sw_sta(struct iwl_mvm *mvm, 4454 struct ieee80211_vif *vif, 4455 struct ieee80211_channel_switch *chsw) 4456 { 4457 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4458 u32 apply_time; 4459 4460 /* Schedule the time event to a bit before beacon 1, 4461 * to make sure we're in the new channel when the 4462 * GO/AP arrives. In case count <= 1 immediately schedule the 4463 * TE (this might result with some packet loss or connection 4464 * loss). 4465 */ 4466 if (chsw->count <= 1) 4467 apply_time = 0; 4468 else 4469 apply_time = chsw->device_timestamp + 4470 ((vif->bss_conf.beacon_int * (chsw->count - 1) - 4471 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024); 4472 4473 if (chsw->block_tx) 4474 iwl_mvm_csa_client_absent(mvm, vif); 4475 4476 if (mvmvif->bf_data.bf_enabled) { 4477 int ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4478 4479 if (ret) 4480 return ret; 4481 } 4482 4483 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int, 4484 apply_time); 4485 4486 return 0; 4487 } 4488 4489 #define IWL_MAX_CSA_BLOCK_TX 1500 4490 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, 4491 struct ieee80211_vif *vif, 4492 struct ieee80211_channel_switch *chsw) 4493 { 4494 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4495 struct ieee80211_vif *csa_vif; 4496 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4497 int ret; 4498 4499 mutex_lock(&mvm->mutex); 4500 4501 mvmvif->csa_failed = false; 4502 4503 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n", 4504 chsw->chandef.center_freq1); 4505 4506 iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt, 4507 ieee80211_vif_to_wdev(vif), 4508 FW_DBG_TRIGGER_CHANNEL_SWITCH); 4509 4510 switch (vif->type) { 4511 case NL80211_IFTYPE_AP: 4512 csa_vif = 4513 rcu_dereference_protected(mvm->csa_vif, 4514 lockdep_is_held(&mvm->mutex)); 4515 if (WARN_ONCE(csa_vif && csa_vif->csa_active, 4516 "Another CSA is already in progress")) { 4517 ret = -EBUSY; 4518 goto out_unlock; 4519 } 4520 4521 /* we still didn't unblock tx. prevent new CS meanwhile */ 4522 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif, 4523 lockdep_is_held(&mvm->mutex))) { 4524 ret = -EBUSY; 4525 goto out_unlock; 4526 } 4527 4528 rcu_assign_pointer(mvm->csa_vif, vif); 4529 4530 if (WARN_ONCE(mvmvif->csa_countdown, 4531 "Previous CSA countdown didn't complete")) { 4532 ret = -EBUSY; 4533 goto out_unlock; 4534 } 4535 4536 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq; 4537 4538 break; 4539 case NL80211_IFTYPE_STATION: 4540 if (chsw->block_tx) { 4541 /* 4542 * In case of undetermined / long time with immediate 4543 * quiet monitor status to gracefully disconnect 4544 */ 4545 if (!chsw->count || 4546 chsw->count * vif->bss_conf.beacon_int > 4547 IWL_MAX_CSA_BLOCK_TX) 4548 schedule_delayed_work(&mvmvif->csa_work, 4549 msecs_to_jiffies(IWL_MAX_CSA_BLOCK_TX)); 4550 } 4551 4552 if (!fw_has_capa(&mvm->fw->ucode_capa, 4553 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { 4554 ret = iwl_mvm_old_pre_chan_sw_sta(mvm, vif, chsw); 4555 if (ret) 4556 goto out_unlock; 4557 } else { 4558 iwl_mvm_schedule_client_csa(mvm, vif, chsw); 4559 } 4560 4561 mvmvif->csa_count = chsw->count; 4562 mvmvif->csa_misbehave = false; 4563 break; 4564 default: 4565 break; 4566 } 4567 4568 mvmvif->ps_disabled = true; 4569 4570 ret = iwl_mvm_power_update_ps(mvm); 4571 if (ret) 4572 goto out_unlock; 4573 4574 /* we won't be on this channel any longer */ 4575 iwl_mvm_teardown_tdls_peers(mvm); 4576 4577 out_unlock: 4578 mutex_unlock(&mvm->mutex); 4579 4580 return ret; 4581 } 4582 4583 static void iwl_mvm_channel_switch_rx_beacon(struct ieee80211_hw *hw, 4584 struct ieee80211_vif *vif, 4585 struct ieee80211_channel_switch *chsw) 4586 { 4587 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4588 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4589 struct iwl_chan_switch_te_cmd cmd = { 4590 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 4591 mvmvif->color)), 4592 .action = cpu_to_le32(FW_CTXT_ACTION_MODIFY), 4593 .tsf = cpu_to_le32(chsw->timestamp), 4594 .cs_count = chsw->count, 4595 .cs_mode = chsw->block_tx, 4596 }; 4597 4598 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CS_MODIFY)) 4599 return; 4600 4601 if (chsw->count >= mvmvif->csa_count && chsw->block_tx) { 4602 if (mvmvif->csa_misbehave) { 4603 /* Second time, give up on this AP*/ 4604 iwl_mvm_abort_channel_switch(hw, vif); 4605 ieee80211_chswitch_done(vif, false); 4606 mvmvif->csa_misbehave = false; 4607 return; 4608 } 4609 mvmvif->csa_misbehave = true; 4610 } 4611 mvmvif->csa_count = chsw->count; 4612 4613 IWL_DEBUG_MAC80211(mvm, "Modify CSA on mac %d\n", mvmvif->id); 4614 4615 WARN_ON(iwl_mvm_send_cmd_pdu(mvm, 4616 WIDE_ID(MAC_CONF_GROUP, 4617 CHANNEL_SWITCH_TIME_EVENT_CMD), 4618 CMD_ASYNC, sizeof(cmd), &cmd)); 4619 } 4620 4621 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop) 4622 { 4623 int i; 4624 4625 if (!iwl_mvm_has_new_tx_api(mvm)) { 4626 if (drop) { 4627 mutex_lock(&mvm->mutex); 4628 iwl_mvm_flush_tx_path(mvm, 4629 iwl_mvm_flushable_queues(mvm) & queues, 0); 4630 mutex_unlock(&mvm->mutex); 4631 } else { 4632 iwl_trans_wait_tx_queues_empty(mvm->trans, queues); 4633 } 4634 return; 4635 } 4636 4637 mutex_lock(&mvm->mutex); 4638 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 4639 struct ieee80211_sta *sta; 4640 4641 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4642 lockdep_is_held(&mvm->mutex)); 4643 if (IS_ERR_OR_NULL(sta)) 4644 continue; 4645 4646 if (drop) 4647 iwl_mvm_flush_sta_tids(mvm, i, 0xFF, 0); 4648 else 4649 iwl_mvm_wait_sta_queues_empty(mvm, 4650 iwl_mvm_sta_from_mac80211(sta)); 4651 } 4652 mutex_unlock(&mvm->mutex); 4653 } 4654 4655 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw, 4656 struct ieee80211_vif *vif, u32 queues, bool drop) 4657 { 4658 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4659 struct iwl_mvm_vif *mvmvif; 4660 struct iwl_mvm_sta *mvmsta; 4661 struct ieee80211_sta *sta; 4662 int i; 4663 u32 msk = 0; 4664 4665 if (!vif) { 4666 iwl_mvm_flush_no_vif(mvm, queues, drop); 4667 return; 4668 } 4669 4670 if (vif->type != NL80211_IFTYPE_STATION) 4671 return; 4672 4673 /* Make sure we're done with the deferred traffic before flushing */ 4674 flush_work(&mvm->add_stream_wk); 4675 4676 mutex_lock(&mvm->mutex); 4677 mvmvif = iwl_mvm_vif_from_mac80211(vif); 4678 4679 /* flush the AP-station and all TDLS peers */ 4680 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 4681 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4682 lockdep_is_held(&mvm->mutex)); 4683 if (IS_ERR_OR_NULL(sta)) 4684 continue; 4685 4686 mvmsta = iwl_mvm_sta_from_mac80211(sta); 4687 if (mvmsta->vif != vif) 4688 continue; 4689 4690 /* make sure only TDLS peers or the AP are flushed */ 4691 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls); 4692 4693 if (drop) { 4694 if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0)) 4695 IWL_ERR(mvm, "flush request fail\n"); 4696 } else { 4697 msk |= mvmsta->tfd_queue_msk; 4698 if (iwl_mvm_has_new_tx_api(mvm)) 4699 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta); 4700 } 4701 } 4702 4703 mutex_unlock(&mvm->mutex); 4704 4705 /* this can take a while, and we may need/want other operations 4706 * to succeed while doing this, so do it without the mutex held 4707 */ 4708 if (!drop && !iwl_mvm_has_new_tx_api(mvm)) 4709 iwl_trans_wait_tx_queues_empty(mvm->trans, msk); 4710 } 4711 4712 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx, 4713 struct survey_info *survey) 4714 { 4715 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4716 int ret; 4717 4718 memset(survey, 0, sizeof(*survey)); 4719 4720 /* only support global statistics right now */ 4721 if (idx != 0) 4722 return -ENOENT; 4723 4724 if (!fw_has_capa(&mvm->fw->ucode_capa, 4725 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4726 return -ENOENT; 4727 4728 mutex_lock(&mvm->mutex); 4729 4730 if (iwl_mvm_firmware_running(mvm)) { 4731 ret = iwl_mvm_request_statistics(mvm, false); 4732 if (ret) 4733 goto out; 4734 } 4735 4736 survey->filled = SURVEY_INFO_TIME | 4737 SURVEY_INFO_TIME_RX | 4738 SURVEY_INFO_TIME_TX | 4739 SURVEY_INFO_TIME_SCAN; 4740 survey->time = mvm->accu_radio_stats.on_time_rf + 4741 mvm->radio_stats.on_time_rf; 4742 do_div(survey->time, USEC_PER_MSEC); 4743 4744 survey->time_rx = mvm->accu_radio_stats.rx_time + 4745 mvm->radio_stats.rx_time; 4746 do_div(survey->time_rx, USEC_PER_MSEC); 4747 4748 survey->time_tx = mvm->accu_radio_stats.tx_time + 4749 mvm->radio_stats.tx_time; 4750 do_div(survey->time_tx, USEC_PER_MSEC); 4751 4752 survey->time_scan = mvm->accu_radio_stats.on_time_scan + 4753 mvm->radio_stats.on_time_scan; 4754 do_div(survey->time_scan, USEC_PER_MSEC); 4755 4756 ret = 0; 4757 out: 4758 mutex_unlock(&mvm->mutex); 4759 return ret; 4760 } 4761 4762 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw, 4763 struct ieee80211_vif *vif, 4764 struct ieee80211_sta *sta, 4765 struct station_info *sinfo) 4766 { 4767 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4768 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4769 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4770 4771 if (mvmsta->avg_energy) { 4772 sinfo->signal_avg = mvmsta->avg_energy; 4773 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); 4774 } 4775 4776 /* if beacon filtering isn't on mac80211 does it anyway */ 4777 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER)) 4778 return; 4779 4780 if (!vif->bss_conf.assoc) 4781 return; 4782 4783 mutex_lock(&mvm->mutex); 4784 4785 if (mvmvif->ap_sta_id != mvmsta->sta_id) 4786 goto unlock; 4787 4788 if (iwl_mvm_request_statistics(mvm, false)) 4789 goto unlock; 4790 4791 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons + 4792 mvmvif->beacon_stats.accu_num_beacons; 4793 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX); 4794 if (mvmvif->beacon_stats.avg_signal) { 4795 /* firmware only reports a value after RXing a few beacons */ 4796 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal; 4797 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG); 4798 } 4799 unlock: 4800 mutex_unlock(&mvm->mutex); 4801 } 4802 4803 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm, 4804 struct ieee80211_vif *vif, 4805 const struct ieee80211_event *event) 4806 { 4807 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \ 4808 do { \ 4809 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \ 4810 break; \ 4811 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt); \ 4812 } while (0) 4813 4814 struct iwl_fw_dbg_trigger_tlv *trig; 4815 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 4816 4817 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 4818 FW_DBG_TRIGGER_MLME); 4819 if (!trig) 4820 return; 4821 4822 trig_mlme = (void *)trig->data; 4823 4824 if (event->u.mlme.data == ASSOC_EVENT) { 4825 if (event->u.mlme.status == MLME_DENIED) 4826 CHECK_MLME_TRIGGER(stop_assoc_denied, 4827 "DENIED ASSOC: reason %d", 4828 event->u.mlme.reason); 4829 else if (event->u.mlme.status == MLME_TIMEOUT) 4830 CHECK_MLME_TRIGGER(stop_assoc_timeout, 4831 "ASSOC TIMEOUT"); 4832 } else if (event->u.mlme.data == AUTH_EVENT) { 4833 if (event->u.mlme.status == MLME_DENIED) 4834 CHECK_MLME_TRIGGER(stop_auth_denied, 4835 "DENIED AUTH: reason %d", 4836 event->u.mlme.reason); 4837 else if (event->u.mlme.status == MLME_TIMEOUT) 4838 CHECK_MLME_TRIGGER(stop_auth_timeout, 4839 "AUTH TIMEOUT"); 4840 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) { 4841 CHECK_MLME_TRIGGER(stop_rx_deauth, 4842 "DEAUTH RX %d", event->u.mlme.reason); 4843 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) { 4844 CHECK_MLME_TRIGGER(stop_tx_deauth, 4845 "DEAUTH TX %d", event->u.mlme.reason); 4846 } 4847 #undef CHECK_MLME_TRIGGER 4848 } 4849 4850 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm, 4851 struct ieee80211_vif *vif, 4852 const struct ieee80211_event *event) 4853 { 4854 struct iwl_fw_dbg_trigger_tlv *trig; 4855 struct iwl_fw_dbg_trigger_ba *ba_trig; 4856 4857 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 4858 FW_DBG_TRIGGER_BA); 4859 if (!trig) 4860 return; 4861 4862 ba_trig = (void *)trig->data; 4863 4864 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid))) 4865 return; 4866 4867 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 4868 "BAR received from %pM, tid %d, ssn %d", 4869 event->u.ba.sta->addr, event->u.ba.tid, 4870 event->u.ba.ssn); 4871 } 4872 4873 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw, 4874 struct ieee80211_vif *vif, 4875 const struct ieee80211_event *event) 4876 { 4877 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4878 4879 switch (event->type) { 4880 case MLME_EVENT: 4881 iwl_mvm_event_mlme_callback(mvm, vif, event); 4882 break; 4883 case BAR_RX_EVENT: 4884 iwl_mvm_event_bar_rx_callback(mvm, vif, event); 4885 break; 4886 case BA_FRAME_TIMEOUT: 4887 iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta, 4888 event->u.ba.tid); 4889 break; 4890 default: 4891 break; 4892 } 4893 } 4894 4895 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm, 4896 struct iwl_mvm_internal_rxq_notif *notif, 4897 u32 size) 4898 { 4899 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1; 4900 int ret; 4901 4902 4903 if (!iwl_mvm_has_new_rx_api(mvm)) 4904 return; 4905 4906 if (notif->sync) { 4907 notif->cookie = mvm->queue_sync_cookie; 4908 atomic_set(&mvm->queue_sync_counter, 4909 mvm->trans->num_rx_queues); 4910 } 4911 4912 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, 4913 size, !notif->sync); 4914 if (ret) { 4915 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret); 4916 goto out; 4917 } 4918 4919 if (notif->sync) { 4920 lockdep_assert_held(&mvm->mutex); 4921 ret = wait_event_timeout(mvm->rx_sync_waitq, 4922 atomic_read(&mvm->queue_sync_counter) == 0 || 4923 iwl_mvm_is_radio_killed(mvm), 4924 HZ); 4925 WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm)); 4926 } 4927 4928 out: 4929 atomic_set(&mvm->queue_sync_counter, 0); 4930 if (notif->sync) 4931 mvm->queue_sync_cookie++; 4932 } 4933 4934 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw) 4935 { 4936 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4937 struct iwl_mvm_internal_rxq_notif data = { 4938 .type = IWL_MVM_RXQ_EMPTY, 4939 .sync = 1, 4940 }; 4941 4942 mutex_lock(&mvm->mutex); 4943 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data)); 4944 mutex_unlock(&mvm->mutex); 4945 } 4946 4947 static int 4948 iwl_mvm_mac_get_ftm_responder_stats(struct ieee80211_hw *hw, 4949 struct ieee80211_vif *vif, 4950 struct cfg80211_ftm_responder_stats *stats) 4951 { 4952 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4953 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4954 4955 if (vif->p2p || vif->type != NL80211_IFTYPE_AP || 4956 !mvmvif->ap_ibss_active || !vif->bss_conf.ftm_responder) 4957 return -EINVAL; 4958 4959 mutex_lock(&mvm->mutex); 4960 *stats = mvm->ftm_resp_stats; 4961 mutex_unlock(&mvm->mutex); 4962 4963 stats->filled = BIT(NL80211_FTM_STATS_SUCCESS_NUM) | 4964 BIT(NL80211_FTM_STATS_PARTIAL_NUM) | 4965 BIT(NL80211_FTM_STATS_FAILED_NUM) | 4966 BIT(NL80211_FTM_STATS_ASAP_NUM) | 4967 BIT(NL80211_FTM_STATS_NON_ASAP_NUM) | 4968 BIT(NL80211_FTM_STATS_TOTAL_DURATION_MSEC) | 4969 BIT(NL80211_FTM_STATS_UNKNOWN_TRIGGERS_NUM) | 4970 BIT(NL80211_FTM_STATS_RESCHEDULE_REQUESTS_NUM) | 4971 BIT(NL80211_FTM_STATS_OUT_OF_WINDOW_TRIGGERS_NUM); 4972 4973 return 0; 4974 } 4975 4976 static int iwl_mvm_start_pmsr(struct ieee80211_hw *hw, 4977 struct ieee80211_vif *vif, 4978 struct cfg80211_pmsr_request *request) 4979 { 4980 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4981 int ret; 4982 4983 mutex_lock(&mvm->mutex); 4984 ret = iwl_mvm_ftm_start(mvm, vif, request); 4985 mutex_unlock(&mvm->mutex); 4986 4987 return ret; 4988 } 4989 4990 static void iwl_mvm_abort_pmsr(struct ieee80211_hw *hw, 4991 struct ieee80211_vif *vif, 4992 struct cfg80211_pmsr_request *request) 4993 { 4994 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4995 4996 mutex_lock(&mvm->mutex); 4997 iwl_mvm_ftm_abort(mvm, request); 4998 mutex_unlock(&mvm->mutex); 4999 } 5000 5001 static bool iwl_mvm_can_hw_csum(struct sk_buff *skb) 5002 { 5003 u8 protocol = ip_hdr(skb)->protocol; 5004 5005 if (!IS_ENABLED(CONFIG_INET)) 5006 return false; 5007 5008 return protocol == IPPROTO_TCP || protocol == IPPROTO_UDP; 5009 } 5010 5011 static bool iwl_mvm_mac_can_aggregate(struct ieee80211_hw *hw, 5012 struct sk_buff *head, 5013 struct sk_buff *skb) 5014 { 5015 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5016 5017 /* For now don't aggregate IPv6 in AMSDU */ 5018 if (skb->protocol != htons(ETH_P_IP)) 5019 return false; 5020 5021 if (!iwl_mvm_is_csum_supported(mvm)) 5022 return true; 5023 5024 return iwl_mvm_can_hw_csum(skb) == iwl_mvm_can_hw_csum(head); 5025 } 5026 5027 const struct ieee80211_ops iwl_mvm_hw_ops = { 5028 .tx = iwl_mvm_mac_tx, 5029 .wake_tx_queue = iwl_mvm_mac_wake_tx_queue, 5030 .ampdu_action = iwl_mvm_mac_ampdu_action, 5031 .start = iwl_mvm_mac_start, 5032 .reconfig_complete = iwl_mvm_mac_reconfig_complete, 5033 .stop = iwl_mvm_mac_stop, 5034 .add_interface = iwl_mvm_mac_add_interface, 5035 .remove_interface = iwl_mvm_mac_remove_interface, 5036 .config = iwl_mvm_mac_config, 5037 .prepare_multicast = iwl_mvm_prepare_multicast, 5038 .configure_filter = iwl_mvm_configure_filter, 5039 .config_iface_filter = iwl_mvm_config_iface_filter, 5040 .bss_info_changed = iwl_mvm_bss_info_changed, 5041 .hw_scan = iwl_mvm_mac_hw_scan, 5042 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan, 5043 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove, 5044 .sta_state = iwl_mvm_mac_sta_state, 5045 .sta_notify = iwl_mvm_mac_sta_notify, 5046 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames, 5047 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames, 5048 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold, 5049 .sta_rc_update = iwl_mvm_sta_rc_update, 5050 .conf_tx = iwl_mvm_mac_conf_tx, 5051 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx, 5052 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover, 5053 .flush = iwl_mvm_mac_flush, 5054 .sched_scan_start = iwl_mvm_mac_sched_scan_start, 5055 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop, 5056 .set_key = iwl_mvm_mac_set_key, 5057 .update_tkip_key = iwl_mvm_mac_update_tkip_key, 5058 .remain_on_channel = iwl_mvm_roc, 5059 .cancel_remain_on_channel = iwl_mvm_cancel_roc, 5060 .add_chanctx = iwl_mvm_add_chanctx, 5061 .remove_chanctx = iwl_mvm_remove_chanctx, 5062 .change_chanctx = iwl_mvm_change_chanctx, 5063 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx, 5064 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx, 5065 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx, 5066 5067 .start_ap = iwl_mvm_start_ap_ibss, 5068 .stop_ap = iwl_mvm_stop_ap_ibss, 5069 .join_ibss = iwl_mvm_start_ap_ibss, 5070 .leave_ibss = iwl_mvm_stop_ap_ibss, 5071 5072 .tx_last_beacon = iwl_mvm_tx_last_beacon, 5073 5074 .set_tim = iwl_mvm_set_tim, 5075 5076 .channel_switch = iwl_mvm_channel_switch, 5077 .pre_channel_switch = iwl_mvm_pre_channel_switch, 5078 .post_channel_switch = iwl_mvm_post_channel_switch, 5079 .abort_channel_switch = iwl_mvm_abort_channel_switch, 5080 .channel_switch_rx_beacon = iwl_mvm_channel_switch_rx_beacon, 5081 5082 .tdls_channel_switch = iwl_mvm_tdls_channel_switch, 5083 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch, 5084 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch, 5085 5086 .event_callback = iwl_mvm_mac_event_callback, 5087 5088 .sync_rx_queues = iwl_mvm_sync_rx_queues, 5089 5090 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd) 5091 5092 #ifdef CONFIG_PM_SLEEP 5093 /* look at d3.c */ 5094 .suspend = iwl_mvm_suspend, 5095 .resume = iwl_mvm_resume, 5096 .set_wakeup = iwl_mvm_set_wakeup, 5097 .set_rekey_data = iwl_mvm_set_rekey_data, 5098 #if IS_ENABLED(CONFIG_IPV6) 5099 .ipv6_addr_change = iwl_mvm_ipv6_addr_change, 5100 #endif 5101 .set_default_unicast_key = iwl_mvm_set_default_unicast_key, 5102 #endif 5103 .get_survey = iwl_mvm_mac_get_survey, 5104 .sta_statistics = iwl_mvm_mac_sta_statistics, 5105 .get_ftm_responder_stats = iwl_mvm_mac_get_ftm_responder_stats, 5106 .start_pmsr = iwl_mvm_start_pmsr, 5107 .abort_pmsr = iwl_mvm_abort_pmsr, 5108 5109 .can_aggregate_in_amsdu = iwl_mvm_mac_can_aggregate, 5110 #ifdef CONFIG_IWLWIFI_DEBUGFS 5111 .sta_add_debugfs = iwl_mvm_sta_add_debugfs, 5112 #endif 5113 }; 5114