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) 2013 - 2015 Intel Mobile Communications GmbH 9 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 10 * Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of version 2 of the GNU General Public License as 14 * published by the Free Software Foundation. 15 * 16 * This program is distributed in the hope that it will be useful, but 17 * WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * General Public License for more details. 20 * 21 * The full GNU General Public License is included in this distribution 22 * in the file called COPYING. 23 * 24 * Contact Information: 25 * Intel Linux Wireless <linuxwifi@intel.com> 26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 27 * 28 * BSD LICENSE 29 * 30 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 31 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 32 * Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation 33 * All rights reserved. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 39 * * Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * * Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in 43 * the documentation and/or other materials provided with the 44 * distribution. 45 * * Neither the name Intel Corporation nor the names of its 46 * contributors may be used to endorse or promote products derived 47 * from this software without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 50 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 51 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 52 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 53 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 54 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 55 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 59 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 60 * 61 *****************************************************************************/ 62 #include <linux/kernel.h> 63 #include <linux/slab.h> 64 #include <linux/skbuff.h> 65 #include <linux/netdevice.h> 66 #include <linux/etherdevice.h> 67 #include <linux/ip.h> 68 #include <linux/if_arp.h> 69 #include <linux/time.h> 70 #include <net/mac80211.h> 71 #include <net/ieee80211_radiotap.h> 72 #include <net/tcp.h> 73 74 #include "iwl-op-mode.h" 75 #include "iwl-io.h" 76 #include "mvm.h" 77 #include "sta.h" 78 #include "time-event.h" 79 #include "iwl-eeprom-parse.h" 80 #include "iwl-phy-db.h" 81 #include "testmode.h" 82 #include "fw/error-dump.h" 83 #include "iwl-prph.h" 84 #include "iwl-nvm-parse.h" 85 86 static const struct ieee80211_iface_limit iwl_mvm_limits[] = { 87 { 88 .max = 1, 89 .types = BIT(NL80211_IFTYPE_STATION), 90 }, 91 { 92 .max = 1, 93 .types = BIT(NL80211_IFTYPE_AP) | 94 BIT(NL80211_IFTYPE_P2P_CLIENT) | 95 BIT(NL80211_IFTYPE_P2P_GO), 96 }, 97 { 98 .max = 1, 99 .types = BIT(NL80211_IFTYPE_P2P_DEVICE), 100 }, 101 }; 102 103 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = { 104 { 105 .num_different_channels = 2, 106 .max_interfaces = 3, 107 .limits = iwl_mvm_limits, 108 .n_limits = ARRAY_SIZE(iwl_mvm_limits), 109 }, 110 }; 111 112 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 113 /* 114 * Use the reserved field to indicate magic values. 115 * these values will only be used internally by the driver, 116 * and won't make it to the fw (reserved will be 0). 117 * BC_FILTER_MAGIC_IP - configure the val of this attribute to 118 * be the vif's ip address. in case there is not a single 119 * ip address (0, or more than 1), this attribute will 120 * be skipped. 121 * BC_FILTER_MAGIC_MAC - set the val of this attribute to 122 * the LSB bytes of the vif's mac address 123 */ 124 enum { 125 BC_FILTER_MAGIC_NONE = 0, 126 BC_FILTER_MAGIC_IP, 127 BC_FILTER_MAGIC_MAC, 128 }; 129 130 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = { 131 { 132 /* arp */ 133 .discard = 0, 134 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL, 135 .attrs = { 136 { 137 /* frame type - arp, hw type - ethernet */ 138 .offset_type = 139 BCAST_FILTER_OFFSET_PAYLOAD_START, 140 .offset = sizeof(rfc1042_header), 141 .val = cpu_to_be32(0x08060001), 142 .mask = cpu_to_be32(0xffffffff), 143 }, 144 { 145 /* arp dest ip */ 146 .offset_type = 147 BCAST_FILTER_OFFSET_PAYLOAD_START, 148 .offset = sizeof(rfc1042_header) + 2 + 149 sizeof(struct arphdr) + 150 ETH_ALEN + sizeof(__be32) + 151 ETH_ALEN, 152 .mask = cpu_to_be32(0xffffffff), 153 /* mark it as special field */ 154 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP), 155 }, 156 }, 157 }, 158 { 159 /* dhcp offer bcast */ 160 .discard = 0, 161 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4, 162 .attrs = { 163 { 164 /* udp dest port - 68 (bootp client)*/ 165 .offset_type = BCAST_FILTER_OFFSET_IP_END, 166 .offset = offsetof(struct udphdr, dest), 167 .val = cpu_to_be32(0x00440000), 168 .mask = cpu_to_be32(0xffff0000), 169 }, 170 { 171 /* dhcp - lsb bytes of client hw address */ 172 .offset_type = BCAST_FILTER_OFFSET_IP_END, 173 .offset = 38, 174 .mask = cpu_to_be32(0xffffffff), 175 /* mark it as special field */ 176 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC), 177 }, 178 }, 179 }, 180 /* last filter must be empty */ 181 {}, 182 }; 183 #endif 184 185 static const struct cfg80211_pmsr_capabilities iwl_mvm_pmsr_capa = { 186 .max_peers = IWL_MVM_TOF_MAX_APS, 187 .report_ap_tsf = 1, 188 .randomize_mac_addr = 1, 189 190 .ftm = { 191 .supported = 1, 192 .asap = 1, 193 .non_asap = 1, 194 .request_lci = 1, 195 .request_civicloc = 1, 196 .trigger_based = 1, 197 .non_trigger_based = 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 BIT(NL80211_PREAMBLE_HE), 208 }, 209 }; 210 211 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 212 enum set_key_cmd cmd, 213 struct ieee80211_vif *vif, 214 struct ieee80211_sta *sta, 215 struct ieee80211_key_conf *key); 216 217 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm) 218 { 219 int i; 220 221 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts)); 222 for (i = 0; i < NUM_PHY_CTX; i++) { 223 mvm->phy_ctxts[i].id = i; 224 mvm->phy_ctxts[i].ref = 0; 225 } 226 } 227 228 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy, 229 const char *alpha2, 230 enum iwl_mcc_source src_id, 231 bool *changed) 232 { 233 struct ieee80211_regdomain *regd = NULL; 234 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 235 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 236 struct iwl_mcc_update_resp *resp; 237 u8 resp_ver; 238 239 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2); 240 241 lockdep_assert_held(&mvm->mutex); 242 243 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id); 244 if (IS_ERR_OR_NULL(resp)) { 245 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n", 246 PTR_ERR_OR_ZERO(resp)); 247 goto out; 248 } 249 250 if (changed) { 251 u32 status = le32_to_cpu(resp->status); 252 253 *changed = (status == MCC_RESP_NEW_CHAN_PROFILE || 254 status == MCC_RESP_ILLEGAL); 255 } 256 resp_ver = iwl_fw_lookup_notif_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, 257 MCC_UPDATE_CMD, 0); 258 IWL_DEBUG_LAR(mvm, "MCC update response version: %d\n", resp_ver); 259 260 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg, 261 __le32_to_cpu(resp->n_channels), 262 resp->channels, 263 __le16_to_cpu(resp->mcc), 264 __le16_to_cpu(resp->geo_info), 265 __le16_to_cpu(resp->cap), resp_ver); 266 /* Store the return source id */ 267 src_id = resp->source_id; 268 kfree(resp); 269 if (IS_ERR_OR_NULL(regd)) { 270 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n", 271 PTR_ERR_OR_ZERO(regd)); 272 goto out; 273 } 274 275 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n", 276 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id); 277 mvm->lar_regdom_set = true; 278 mvm->mcc_src = src_id; 279 280 out: 281 return regd; 282 } 283 284 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm) 285 { 286 bool changed; 287 struct ieee80211_regdomain *regd; 288 289 if (!iwl_mvm_is_lar_supported(mvm)) 290 return; 291 292 regd = iwl_mvm_get_current_regdomain(mvm, &changed); 293 if (!IS_ERR_OR_NULL(regd)) { 294 /* only update the regulatory core if changed */ 295 if (changed) 296 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd); 297 298 kfree(regd); 299 } 300 } 301 302 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm, 303 bool *changed) 304 { 305 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ", 306 iwl_mvm_is_wifi_mcc_supported(mvm) ? 307 MCC_SOURCE_GET_CURRENT : 308 MCC_SOURCE_OLD_FW, changed); 309 } 310 311 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm) 312 { 313 enum iwl_mcc_source used_src; 314 struct ieee80211_regdomain *regd; 315 int ret; 316 bool changed; 317 const struct ieee80211_regdomain *r = 318 rtnl_dereference(mvm->hw->wiphy->regd); 319 320 if (!r) 321 return -ENOENT; 322 323 /* save the last source in case we overwrite it below */ 324 used_src = mvm->mcc_src; 325 if (iwl_mvm_is_wifi_mcc_supported(mvm)) { 326 /* Notify the firmware we support wifi location updates */ 327 regd = iwl_mvm_get_current_regdomain(mvm, NULL); 328 if (!IS_ERR_OR_NULL(regd)) 329 kfree(regd); 330 } 331 332 /* Now set our last stored MCC and source */ 333 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src, 334 &changed); 335 if (IS_ERR_OR_NULL(regd)) 336 return -EIO; 337 338 /* update cfg80211 if the regdomain was changed */ 339 if (changed) 340 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd); 341 else 342 ret = 0; 343 344 kfree(regd); 345 return ret; 346 } 347 348 static const u8 he_if_types_ext_capa_sta[] = { 349 [0] = WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING, 350 [2] = WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT, 351 [7] = WLAN_EXT_CAPA8_OPMODE_NOTIF, 352 [9] = WLAN_EXT_CAPA10_TWT_REQUESTER_SUPPORT, 353 }; 354 355 static const struct wiphy_iftype_ext_capab he_iftypes_ext_capa[] = { 356 { 357 .iftype = NL80211_IFTYPE_STATION, 358 .extended_capabilities = he_if_types_ext_capa_sta, 359 .extended_capabilities_mask = he_if_types_ext_capa_sta, 360 .extended_capabilities_len = sizeof(he_if_types_ext_capa_sta), 361 }, 362 }; 363 364 static int 365 iwl_mvm_op_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant) 366 { 367 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 368 *tx_ant = iwl_mvm_get_valid_tx_ant(mvm); 369 *rx_ant = iwl_mvm_get_valid_rx_ant(mvm); 370 return 0; 371 } 372 373 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) 374 { 375 struct ieee80211_hw *hw = mvm->hw; 376 int num_mac, ret, i; 377 static const u32 mvm_ciphers[] = { 378 WLAN_CIPHER_SUITE_WEP40, 379 WLAN_CIPHER_SUITE_WEP104, 380 WLAN_CIPHER_SUITE_TKIP, 381 WLAN_CIPHER_SUITE_CCMP, 382 }; 383 #ifdef CONFIG_PM_SLEEP 384 bool unified = fw_has_capa(&mvm->fw->ucode_capa, 385 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 386 #endif 387 388 /* Tell mac80211 our characteristics */ 389 ieee80211_hw_set(hw, SIGNAL_DBM); 390 ieee80211_hw_set(hw, SPECTRUM_MGMT); 391 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 392 ieee80211_hw_set(hw, WANT_MONITOR_VIF); 393 ieee80211_hw_set(hw, SUPPORTS_PS); 394 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 395 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 396 ieee80211_hw_set(hw, TIMING_BEACON_ONLY); 397 ieee80211_hw_set(hw, CONNECTION_MONITOR); 398 ieee80211_hw_set(hw, CHANCTX_STA_CSA); 399 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); 400 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS); 401 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU); 402 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR); 403 ieee80211_hw_set(hw, DEAUTH_NEED_MGD_TX_PREP); 404 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW); 405 ieee80211_hw_set(hw, BUFF_MMPDU_TXQ); 406 ieee80211_hw_set(hw, STA_MMPDU_TXQ); 407 /* 408 * On older devices, enabling TX A-MSDU occasionally leads to 409 * something getting messed up, the command read from the FIFO 410 * gets out of sync and isn't a TX command, so that we have an 411 * assert EDC. 412 * 413 * It's not clear where the bug is, but since we didn't used to 414 * support A-MSDU until moving the mac80211 iTXQs, just leave it 415 * for older devices. We also don't see this issue on any newer 416 * devices. 417 */ 418 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_9000) 419 ieee80211_hw_set(hw, TX_AMSDU); 420 ieee80211_hw_set(hw, TX_FRAG_LIST); 421 422 if (iwl_mvm_has_tlc_offload(mvm)) { 423 ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW); 424 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 425 } 426 427 if (iwl_mvm_has_new_rx_api(mvm)) 428 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER); 429 430 if (fw_has_capa(&mvm->fw->ucode_capa, 431 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) { 432 ieee80211_hw_set(hw, AP_LINK_PS); 433 } else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) { 434 /* 435 * we absolutely need this for the new TX API since that comes 436 * with many more queues than the current code can deal with 437 * for station powersave 438 */ 439 return -EINVAL; 440 } 441 442 if (mvm->trans->num_rx_queues > 1) 443 ieee80211_hw_set(hw, USES_RSS); 444 445 if (mvm->trans->max_skb_frags) 446 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG; 447 448 hw->queues = IEEE80211_MAX_QUEUES; 449 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE; 450 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC | 451 IEEE80211_RADIOTAP_MCS_HAVE_STBC; 452 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC | 453 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED; 454 455 hw->radiotap_timestamp.units_pos = 456 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US | 457 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ; 458 /* this is the case for CCK frames, it's better (only 8) for OFDM */ 459 hw->radiotap_timestamp.accuracy = 22; 460 461 if (!iwl_mvm_has_tlc_offload(mvm)) 462 hw->rate_control_algorithm = RS_NAME; 463 464 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES; 465 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP; 466 hw->max_tx_fragments = mvm->trans->max_skb_frags; 467 468 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6); 469 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers)); 470 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers); 471 hw->wiphy->cipher_suites = mvm->ciphers; 472 473 if (iwl_mvm_has_new_rx_api(mvm)) { 474 mvm->ciphers[hw->wiphy->n_cipher_suites] = 475 WLAN_CIPHER_SUITE_GCMP; 476 hw->wiphy->n_cipher_suites++; 477 mvm->ciphers[hw->wiphy->n_cipher_suites] = 478 WLAN_CIPHER_SUITE_GCMP_256; 479 hw->wiphy->n_cipher_suites++; 480 } 481 482 if (iwlwifi_mod_params.swcrypto) 483 IWL_ERR(mvm, 484 "iwlmvm doesn't allow to disable HW crypto, check swcrypto module parameter\n"); 485 if (!iwlwifi_mod_params.bt_coex_active) 486 IWL_ERR(mvm, 487 "iwlmvm doesn't allow to disable BT Coex, check bt_coex_active module parameter\n"); 488 489 ieee80211_hw_set(hw, MFP_CAPABLE); 490 mvm->ciphers[hw->wiphy->n_cipher_suites] = WLAN_CIPHER_SUITE_AES_CMAC; 491 hw->wiphy->n_cipher_suites++; 492 if (iwl_mvm_has_new_rx_api(mvm)) { 493 mvm->ciphers[hw->wiphy->n_cipher_suites] = 494 WLAN_CIPHER_SUITE_BIP_GMAC_128; 495 hw->wiphy->n_cipher_suites++; 496 mvm->ciphers[hw->wiphy->n_cipher_suites] = 497 WLAN_CIPHER_SUITE_BIP_GMAC_256; 498 hw->wiphy->n_cipher_suites++; 499 } 500 501 /* currently FW API supports only one optional cipher scheme */ 502 if (mvm->fw->cs[0].cipher) { 503 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0]; 504 struct ieee80211_cipher_scheme *cs = &mvm->cs[0]; 505 506 mvm->hw->n_cipher_schemes = 1; 507 508 cs->cipher = le32_to_cpu(fwcs->cipher); 509 cs->iftype = BIT(NL80211_IFTYPE_STATION); 510 cs->hdr_len = fwcs->hdr_len; 511 cs->pn_len = fwcs->pn_len; 512 cs->pn_off = fwcs->pn_off; 513 cs->key_idx_off = fwcs->key_idx_off; 514 cs->key_idx_mask = fwcs->key_idx_mask; 515 cs->key_idx_shift = fwcs->key_idx_shift; 516 cs->mic_len = fwcs->mic_len; 517 518 mvm->hw->cipher_schemes = mvm->cs; 519 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher; 520 hw->wiphy->n_cipher_suites++; 521 } 522 523 if (fw_has_capa(&mvm->fw->ucode_capa, 524 IWL_UCODE_TLV_CAPA_FTM_CALIBRATED)) { 525 wiphy_ext_feature_set(hw->wiphy, 526 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER); 527 hw->wiphy->pmsr_capa = &iwl_mvm_pmsr_capa; 528 } 529 530 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS); 531 hw->wiphy->features |= 532 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR | 533 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR | 534 NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 535 536 hw->sta_data_size = sizeof(struct iwl_mvm_sta); 537 hw->vif_data_size = sizeof(struct iwl_mvm_vif); 538 hw->chanctx_data_size = sizeof(u16); 539 hw->txq_data_size = sizeof(struct iwl_mvm_txq); 540 541 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 542 BIT(NL80211_IFTYPE_P2P_CLIENT) | 543 BIT(NL80211_IFTYPE_AP) | 544 BIT(NL80211_IFTYPE_P2P_GO) | 545 BIT(NL80211_IFTYPE_P2P_DEVICE) | 546 BIT(NL80211_IFTYPE_ADHOC); 547 548 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; 549 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS); 550 551 /* The new Tx API does not allow to pass the key or keyid of a MPDU to 552 * the hw, preventing us to control which key(id) to use per MPDU. 553 * Till that's fixed we can't use Extended Key ID for the newer cards. 554 */ 555 if (!iwl_mvm_has_new_tx_api(mvm)) 556 wiphy_ext_feature_set(hw->wiphy, 557 NL80211_EXT_FEATURE_EXT_KEY_ID); 558 hw->wiphy->features |= NL80211_FEATURE_HT_IBSS; 559 560 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR; 561 if (iwl_mvm_is_lar_supported(mvm)) 562 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED; 563 else 564 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | 565 REGULATORY_DISABLE_BEACON_HINTS; 566 567 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; 568 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; 569 570 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations; 571 hw->wiphy->n_iface_combinations = 572 ARRAY_SIZE(iwl_mvm_iface_combinations); 573 574 hw->wiphy->max_remain_on_channel_duration = 10000; 575 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; 576 577 /* Extract MAC address */ 578 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN); 579 hw->wiphy->addresses = mvm->addresses; 580 hw->wiphy->n_addresses = 1; 581 582 /* Extract additional MAC addresses if available */ 583 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ? 584 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1; 585 586 for (i = 1; i < num_mac; i++) { 587 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr, 588 ETH_ALEN); 589 mvm->addresses[i].addr[5]++; 590 hw->wiphy->n_addresses++; 591 } 592 593 iwl_mvm_reset_phy_ctxts(mvm); 594 595 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm); 596 597 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; 598 599 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK); 600 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) || 601 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK)); 602 603 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 604 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS; 605 else 606 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS; 607 608 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels) 609 hw->wiphy->bands[NL80211_BAND_2GHZ] = 610 &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 611 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) { 612 hw->wiphy->bands[NL80211_BAND_5GHZ] = 613 &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 614 615 if (fw_has_capa(&mvm->fw->ucode_capa, 616 IWL_UCODE_TLV_CAPA_BEAMFORMER) && 617 fw_has_api(&mvm->fw->ucode_capa, 618 IWL_UCODE_TLV_API_LQ_SS_PARAMS)) 619 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |= 620 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE; 621 } 622 623 hw->wiphy->hw_version = mvm->trans->hw_id; 624 625 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 626 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; 627 else 628 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; 629 630 hw->wiphy->max_sched_scan_reqs = 1; 631 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX; 632 hw->wiphy->max_match_sets = iwl_umac_scan_get_max_profiles(mvm->fw); 633 /* we create the 802.11 header and zero length SSID IE. */ 634 hw->wiphy->max_sched_scan_ie_len = 635 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2; 636 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS; 637 hw->wiphy->max_sched_scan_plan_interval = U16_MAX; 638 639 /* 640 * the firmware uses u8 for num of iterations, but 0xff is saved for 641 * infinite loop, so the maximum number of iterations is actually 254. 642 */ 643 hw->wiphy->max_sched_scan_plan_iterations = 254; 644 645 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN | 646 NL80211_FEATURE_LOW_PRIORITY_SCAN | 647 NL80211_FEATURE_P2P_GO_OPPPS | 648 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | 649 NL80211_FEATURE_DYNAMIC_SMPS | 650 NL80211_FEATURE_STATIC_SMPS | 651 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION; 652 653 if (fw_has_capa(&mvm->fw->ucode_capa, 654 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)) 655 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION; 656 if (fw_has_capa(&mvm->fw->ucode_capa, 657 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)) 658 hw->wiphy->features |= NL80211_FEATURE_QUIET; 659 660 if (fw_has_capa(&mvm->fw->ucode_capa, 661 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) 662 hw->wiphy->features |= 663 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES; 664 665 if (fw_has_capa(&mvm->fw->ucode_capa, 666 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 667 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES; 668 669 if (iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, 670 WOWLAN_KEK_KCK_MATERIAL, 671 IWL_FW_CMD_VER_UNKNOWN) == 3) 672 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK; 673 674 if (fw_has_api(&mvm->fw->ucode_capa, 675 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) { 676 wiphy_ext_feature_set(hw->wiphy, 677 NL80211_EXT_FEATURE_SCAN_START_TIME); 678 wiphy_ext_feature_set(hw->wiphy, 679 NL80211_EXT_FEATURE_BSS_PARENT_TSF); 680 } 681 682 if (iwl_mvm_is_oce_supported(mvm)) { 683 wiphy_ext_feature_set(hw->wiphy, 684 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP); 685 wiphy_ext_feature_set(hw->wiphy, 686 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME); 687 wiphy_ext_feature_set(hw->wiphy, 688 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION); 689 wiphy_ext_feature_set(hw->wiphy, 690 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE); 691 } 692 693 if (mvm->nvm_data->sku_cap_11ax_enable && 694 !iwlwifi_mod_params.disable_11ax) { 695 hw->wiphy->iftype_ext_capab = he_iftypes_ext_capa; 696 hw->wiphy->num_iftype_ext_capab = 697 ARRAY_SIZE(he_iftypes_ext_capa); 698 699 ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID); 700 ieee80211_hw_set(hw, SUPPORTS_ONLY_HE_MULTI_BSSID); 701 } 702 703 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; 704 705 #ifdef CONFIG_PM_SLEEP 706 if ((unified || mvm->fw->img[IWL_UCODE_WOWLAN].num_sec) && 707 mvm->trans->ops->d3_suspend && 708 mvm->trans->ops->d3_resume && 709 device_can_wakeup(mvm->trans->dev)) { 710 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT | 711 WIPHY_WOWLAN_DISCONNECT | 712 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 713 WIPHY_WOWLAN_RFKILL_RELEASE | 714 WIPHY_WOWLAN_NET_DETECT; 715 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 716 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 717 WIPHY_WOWLAN_4WAY_HANDSHAKE; 718 719 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS; 720 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN; 721 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN; 722 mvm->wowlan.max_nd_match_sets = 723 iwl_umac_scan_get_max_profiles(mvm->fw); 724 hw->wiphy->wowlan = &mvm->wowlan; 725 } 726 #endif 727 728 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 729 /* assign default bcast filtering configuration */ 730 mvm->bcast_filters = iwl_mvm_default_bcast_filters; 731 #endif 732 733 ret = iwl_mvm_leds_init(mvm); 734 if (ret) 735 return ret; 736 737 if (fw_has_capa(&mvm->fw->ucode_capa, 738 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) { 739 IWL_DEBUG_TDLS(mvm, "TDLS supported\n"); 740 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS; 741 ieee80211_hw_set(hw, TDLS_WIDER_BW); 742 } 743 744 if (fw_has_capa(&mvm->fw->ucode_capa, 745 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) { 746 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n"); 747 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH; 748 } 749 750 hw->netdev_features |= mvm->cfg->features; 751 if (!iwl_mvm_is_csum_supported(mvm)) { 752 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS | 753 NETIF_F_RXCSUM); 754 /* We may support SW TX CSUM */ 755 if (IWL_MVM_SW_TX_CSUM_OFFLOAD) 756 hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS; 757 } 758 759 if (mvm->cfg->vht_mu_mimo_supported) 760 wiphy_ext_feature_set(hw->wiphy, 761 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER); 762 763 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_PROTECTED_TWT)) 764 wiphy_ext_feature_set(hw->wiphy, 765 NL80211_EXT_FEATURE_PROTECTED_TWT); 766 767 hw->wiphy->available_antennas_tx = iwl_mvm_get_valid_tx_ant(mvm); 768 hw->wiphy->available_antennas_rx = iwl_mvm_get_valid_rx_ant(mvm); 769 770 ret = ieee80211_register_hw(mvm->hw); 771 if (ret) { 772 iwl_mvm_leds_exit(mvm); 773 } 774 775 return ret; 776 } 777 778 static void iwl_mvm_tx_skb(struct iwl_mvm *mvm, struct sk_buff *skb, 779 struct ieee80211_sta *sta) 780 { 781 if (likely(sta)) { 782 if (likely(iwl_mvm_tx_skb_sta(mvm, skb, sta) == 0)) 783 return; 784 } else { 785 if (likely(iwl_mvm_tx_skb_non_sta(mvm, skb) == 0)) 786 return; 787 } 788 789 ieee80211_free_txskb(mvm->hw, skb); 790 } 791 792 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw, 793 struct ieee80211_tx_control *control, 794 struct sk_buff *skb) 795 { 796 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 797 struct ieee80211_sta *sta = control->sta; 798 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 799 struct ieee80211_hdr *hdr = (void *)skb->data; 800 bool offchannel = IEEE80211_SKB_CB(skb)->flags & 801 IEEE80211_TX_CTL_TX_OFFCHAN; 802 803 if (iwl_mvm_is_radio_killed(mvm)) { 804 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n"); 805 goto drop; 806 } 807 808 if (offchannel && 809 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) && 810 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status)) 811 goto drop; 812 813 /* treat non-bufferable MMPDUs on AP interfaces as broadcast */ 814 if ((info->control.vif->type == NL80211_IFTYPE_AP || 815 info->control.vif->type == NL80211_IFTYPE_ADHOC) && 816 ieee80211_is_mgmt(hdr->frame_control) && 817 !ieee80211_is_bufferable_mmpdu(hdr->frame_control)) 818 sta = NULL; 819 820 /* If there is no sta, and it's not offchannel - send through AP */ 821 if (!sta && info->control.vif->type == NL80211_IFTYPE_STATION && 822 !offchannel) { 823 struct iwl_mvm_vif *mvmvif = 824 iwl_mvm_vif_from_mac80211(info->control.vif); 825 u8 ap_sta_id = READ_ONCE(mvmvif->ap_sta_id); 826 827 if (ap_sta_id < mvm->fw->ucode_capa.num_stations) { 828 /* mac80211 holds rcu read lock */ 829 sta = rcu_dereference(mvm->fw_id_to_mac_id[ap_sta_id]); 830 if (IS_ERR_OR_NULL(sta)) 831 goto drop; 832 } 833 } 834 835 iwl_mvm_tx_skb(mvm, skb, sta); 836 return; 837 drop: 838 ieee80211_free_txskb(hw, skb); 839 } 840 841 void iwl_mvm_mac_itxq_xmit(struct ieee80211_hw *hw, struct ieee80211_txq *txq) 842 { 843 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 844 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq); 845 struct sk_buff *skb = NULL; 846 847 /* 848 * No need for threads to be pending here, they can leave the first 849 * taker all the work. 850 * 851 * mvmtxq->tx_request logic: 852 * 853 * If 0, no one is currently TXing, set to 1 to indicate current thread 854 * will now start TX and other threads should quit. 855 * 856 * If 1, another thread is currently TXing, set to 2 to indicate to 857 * that thread that there was another request. Since that request may 858 * have raced with the check whether the queue is empty, the TXing 859 * thread should check the queue's status one more time before leaving. 860 * This check is done in order to not leave any TX hanging in the queue 861 * until the next TX invocation (which may not even happen). 862 * 863 * If 2, another thread is currently TXing, and it will already double 864 * check the queue, so do nothing. 865 */ 866 if (atomic_fetch_add_unless(&mvmtxq->tx_request, 1, 2)) 867 return; 868 869 rcu_read_lock(); 870 do { 871 while (likely(!mvmtxq->stopped && 872 (mvm->trans->system_pm_mode == 873 IWL_PLAT_PM_MODE_DISABLED))) { 874 skb = ieee80211_tx_dequeue(hw, txq); 875 876 if (!skb) { 877 if (txq->sta) 878 IWL_DEBUG_TX(mvm, 879 "TXQ of sta %pM tid %d is now empty\n", 880 txq->sta->addr, 881 txq->tid); 882 break; 883 } 884 885 iwl_mvm_tx_skb(mvm, skb, txq->sta); 886 } 887 } while (atomic_dec_return(&mvmtxq->tx_request)); 888 rcu_read_unlock(); 889 } 890 891 static void iwl_mvm_mac_wake_tx_queue(struct ieee80211_hw *hw, 892 struct ieee80211_txq *txq) 893 { 894 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 895 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq); 896 897 /* 898 * Please note that racing is handled very carefully here: 899 * mvmtxq->txq_id is updated during allocation, and mvmtxq->list is 900 * deleted afterwards. 901 * This means that if: 902 * mvmtxq->txq_id != INVALID_QUEUE && list_empty(&mvmtxq->list): 903 * queue is allocated and we can TX. 904 * mvmtxq->txq_id != INVALID_QUEUE && !list_empty(&mvmtxq->list): 905 * a race, should defer the frame. 906 * mvmtxq->txq_id == INVALID_QUEUE && list_empty(&mvmtxq->list): 907 * need to allocate the queue and defer the frame. 908 * mvmtxq->txq_id == INVALID_QUEUE && !list_empty(&mvmtxq->list): 909 * queue is already scheduled for allocation, no need to allocate, 910 * should defer the frame. 911 */ 912 913 /* If the queue is allocated TX and return. */ 914 if (!txq->sta || mvmtxq->txq_id != IWL_MVM_INVALID_QUEUE) { 915 /* 916 * Check that list is empty to avoid a race where txq_id is 917 * already updated, but the queue allocation work wasn't 918 * finished 919 */ 920 if (unlikely(txq->sta && !list_empty(&mvmtxq->list))) 921 return; 922 923 iwl_mvm_mac_itxq_xmit(hw, txq); 924 return; 925 } 926 927 /* The list is being deleted only after the queue is fully allocated. */ 928 if (!list_empty(&mvmtxq->list)) 929 return; 930 931 list_add_tail(&mvmtxq->list, &mvm->add_stream_txqs); 932 schedule_work(&mvm->add_stream_wk); 933 } 934 935 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \ 936 do { \ 937 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \ 938 break; \ 939 iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt); \ 940 } while (0) 941 942 static void 943 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 944 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn, 945 enum ieee80211_ampdu_mlme_action action) 946 { 947 struct iwl_fw_dbg_trigger_tlv *trig; 948 struct iwl_fw_dbg_trigger_ba *ba_trig; 949 950 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 951 FW_DBG_TRIGGER_BA); 952 if (!trig) 953 return; 954 955 ba_trig = (void *)trig->data; 956 957 switch (action) { 958 case IEEE80211_AMPDU_TX_OPERATIONAL: { 959 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 960 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 961 962 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid, 963 "TX AGG START: MAC %pM tid %d ssn %d\n", 964 sta->addr, tid, tid_data->ssn); 965 break; 966 } 967 case IEEE80211_AMPDU_TX_STOP_CONT: 968 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid, 969 "TX AGG STOP: MAC %pM tid %d\n", 970 sta->addr, tid); 971 break; 972 case IEEE80211_AMPDU_RX_START: 973 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid, 974 "RX AGG START: MAC %pM tid %d ssn %d\n", 975 sta->addr, tid, rx_ba_ssn); 976 break; 977 case IEEE80211_AMPDU_RX_STOP: 978 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid, 979 "RX AGG STOP: MAC %pM tid %d\n", 980 sta->addr, tid); 981 break; 982 default: 983 break; 984 } 985 } 986 987 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw, 988 struct ieee80211_vif *vif, 989 struct ieee80211_ampdu_params *params) 990 { 991 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 992 int ret; 993 struct ieee80211_sta *sta = params->sta; 994 enum ieee80211_ampdu_mlme_action action = params->action; 995 u16 tid = params->tid; 996 u16 *ssn = ¶ms->ssn; 997 u16 buf_size = params->buf_size; 998 bool amsdu = params->amsdu; 999 u16 timeout = params->timeout; 1000 1001 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n", 1002 sta->addr, tid, action); 1003 1004 if (!(mvm->nvm_data->sku_cap_11n_enable)) 1005 return -EACCES; 1006 1007 mutex_lock(&mvm->mutex); 1008 1009 switch (action) { 1010 case IEEE80211_AMPDU_RX_START: 1011 if (iwl_mvm_vif_from_mac80211(vif)->ap_sta_id == 1012 iwl_mvm_sta_from_mac80211(sta)->sta_id) { 1013 struct iwl_mvm_vif *mvmvif; 1014 u16 macid = iwl_mvm_vif_from_mac80211(vif)->id; 1015 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid]; 1016 1017 mdata->opened_rx_ba_sessions = true; 1018 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1019 cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk); 1020 } 1021 if (!iwl_enable_rx_ampdu()) { 1022 ret = -EINVAL; 1023 break; 1024 } 1025 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size, 1026 timeout); 1027 break; 1028 case IEEE80211_AMPDU_RX_STOP: 1029 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size, 1030 timeout); 1031 break; 1032 case IEEE80211_AMPDU_TX_START: 1033 if (!iwl_enable_tx_ampdu()) { 1034 ret = -EINVAL; 1035 break; 1036 } 1037 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn); 1038 break; 1039 case IEEE80211_AMPDU_TX_STOP_CONT: 1040 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid); 1041 break; 1042 case IEEE80211_AMPDU_TX_STOP_FLUSH: 1043 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 1044 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid); 1045 break; 1046 case IEEE80211_AMPDU_TX_OPERATIONAL: 1047 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, 1048 buf_size, amsdu); 1049 break; 1050 default: 1051 WARN_ON_ONCE(1); 1052 ret = -EINVAL; 1053 break; 1054 } 1055 1056 if (!ret) { 1057 u16 rx_ba_ssn = 0; 1058 1059 if (action == IEEE80211_AMPDU_RX_START) 1060 rx_ba_ssn = *ssn; 1061 1062 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid, 1063 rx_ba_ssn, action); 1064 } 1065 mutex_unlock(&mvm->mutex); 1066 1067 return ret; 1068 } 1069 1070 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac, 1071 struct ieee80211_vif *vif) 1072 { 1073 struct iwl_mvm *mvm = data; 1074 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1075 1076 mvmvif->uploaded = false; 1077 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1078 1079 spin_lock_bh(&mvm->time_event_lock); 1080 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data); 1081 spin_unlock_bh(&mvm->time_event_lock); 1082 1083 mvmvif->phy_ctxt = NULL; 1084 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data)); 1085 memset(&mvmvif->probe_resp_data, 0, sizeof(mvmvif->probe_resp_data)); 1086 } 1087 1088 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) 1089 { 1090 iwl_mvm_stop_device(mvm); 1091 1092 mvm->cur_aid = 0; 1093 1094 mvm->scan_status = 0; 1095 mvm->ps_disabled = false; 1096 mvm->rfkill_safe_init_done = false; 1097 1098 /* just in case one was running */ 1099 iwl_mvm_cleanup_roc_te(mvm); 1100 ieee80211_remain_on_channel_expired(mvm->hw); 1101 1102 iwl_mvm_ftm_restart(mvm); 1103 1104 /* 1105 * cleanup all interfaces, even inactive ones, as some might have 1106 * gone down during the HW restart 1107 */ 1108 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm); 1109 1110 mvm->p2p_device_vif = NULL; 1111 1112 iwl_mvm_reset_phy_ctxts(mvm); 1113 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 1114 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif)); 1115 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd)); 1116 1117 ieee80211_wake_queues(mvm->hw); 1118 1119 mvm->vif_count = 0; 1120 mvm->rx_ba_sessions = 0; 1121 mvm->fwrt.dump.conf = FW_DBG_INVALID; 1122 mvm->monitor_on = false; 1123 1124 /* keep statistics ticking */ 1125 iwl_mvm_accu_radio_stats(mvm); 1126 } 1127 1128 int __iwl_mvm_mac_start(struct iwl_mvm *mvm) 1129 { 1130 int ret; 1131 1132 lockdep_assert_held(&mvm->mutex); 1133 1134 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) { 1135 /* 1136 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART 1137 * so later code will - from now on - see that we're doing it. 1138 */ 1139 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1140 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 1141 /* Clean up some internal and mac80211 state on restart */ 1142 iwl_mvm_restart_cleanup(mvm); 1143 } 1144 ret = iwl_mvm_up(mvm); 1145 1146 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_POST_INIT, 1147 NULL); 1148 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_PERIODIC, 1149 NULL); 1150 1151 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1152 /* Something went wrong - we need to finish some cleanup 1153 * that normally iwl_mvm_mac_restart_complete() below 1154 * would do. 1155 */ 1156 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1157 } 1158 1159 return ret; 1160 } 1161 1162 static int iwl_mvm_mac_start(struct ieee80211_hw *hw) 1163 { 1164 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1165 int ret; 1166 1167 mutex_lock(&mvm->mutex); 1168 ret = __iwl_mvm_mac_start(mvm); 1169 mutex_unlock(&mvm->mutex); 1170 1171 return ret; 1172 } 1173 1174 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm) 1175 { 1176 int ret; 1177 1178 mutex_lock(&mvm->mutex); 1179 1180 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1181 1182 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1183 if (ret) 1184 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n", 1185 ret); 1186 1187 iwl_mvm_send_recovery_cmd(mvm, ERROR_RECOVERY_END_OF_RECOVERY); 1188 1189 /* 1190 * If we have TDLS peers, remove them. We don't know the last seqno/PN 1191 * of packets the FW sent out, so we must reconnect. 1192 */ 1193 iwl_mvm_teardown_tdls_peers(mvm); 1194 1195 mutex_unlock(&mvm->mutex); 1196 } 1197 1198 static void 1199 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw, 1200 enum ieee80211_reconfig_type reconfig_type) 1201 { 1202 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1203 1204 switch (reconfig_type) { 1205 case IEEE80211_RECONFIG_TYPE_RESTART: 1206 iwl_mvm_restart_complete(mvm); 1207 break; 1208 case IEEE80211_RECONFIG_TYPE_SUSPEND: 1209 break; 1210 } 1211 } 1212 1213 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm) 1214 { 1215 lockdep_assert_held(&mvm->mutex); 1216 1217 iwl_mvm_ftm_initiator_smooth_stop(mvm); 1218 1219 /* firmware counters are obviously reset now, but we shouldn't 1220 * partially track so also clear the fw_reset_accu counters. 1221 */ 1222 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats)); 1223 1224 /* async_handlers_wk is now blocked */ 1225 1226 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, ADD_STA, 0) < 12) 1227 iwl_mvm_rm_aux_sta(mvm); 1228 1229 iwl_mvm_stop_device(mvm); 1230 1231 iwl_mvm_async_handlers_purge(mvm); 1232 /* async_handlers_list is empty and will stay empty: HW is stopped */ 1233 1234 /* 1235 * Clear IN_HW_RESTART and HW_RESTART_REQUESTED flag when stopping the 1236 * hw (as restart_complete() won't be called in this case) and mac80211 1237 * won't execute the restart. 1238 * But make sure to cleanup interfaces that have gone down before/during 1239 * HW restart was requested. 1240 */ 1241 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 1242 test_and_clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 1243 &mvm->status)) 1244 ieee80211_iterate_interfaces(mvm->hw, 0, 1245 iwl_mvm_cleanup_iterator, mvm); 1246 1247 /* We shouldn't have any UIDs still set. Loop over all the UIDs to 1248 * make sure there's nothing left there and warn if any is found. 1249 */ 1250 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 1251 int i; 1252 1253 for (i = 0; i < mvm->max_scans; i++) { 1254 if (WARN_ONCE(mvm->scan_uid_status[i], 1255 "UMAC scan UID %d status was not cleaned\n", 1256 i)) 1257 mvm->scan_uid_status[i] = 0; 1258 } 1259 } 1260 } 1261 1262 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw) 1263 { 1264 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1265 1266 flush_work(&mvm->async_handlers_wk); 1267 flush_work(&mvm->add_stream_wk); 1268 1269 /* 1270 * Lock and clear the firmware running bit here already, so that 1271 * new commands coming in elsewhere, e.g. from debugfs, will not 1272 * be able to proceed. This is important here because one of those 1273 * debugfs files causes the firmware dump to be triggered, and if we 1274 * don't stop debugfs accesses before canceling that it could be 1275 * retriggered after we flush it but before we've cleared the bit. 1276 */ 1277 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status); 1278 1279 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork); 1280 cancel_delayed_work_sync(&mvm->scan_timeout_dwork); 1281 1282 /* 1283 * The work item could be running or queued if the 1284 * ROC time event stops just as we get here. 1285 */ 1286 flush_work(&mvm->roc_done_wk); 1287 1288 mutex_lock(&mvm->mutex); 1289 __iwl_mvm_mac_stop(mvm); 1290 mutex_unlock(&mvm->mutex); 1291 1292 /* 1293 * The worker might have been waiting for the mutex, let it run and 1294 * discover that its list is now empty. 1295 */ 1296 cancel_work_sync(&mvm->async_handlers_wk); 1297 } 1298 1299 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm) 1300 { 1301 u16 i; 1302 1303 lockdep_assert_held(&mvm->mutex); 1304 1305 for (i = 0; i < NUM_PHY_CTX; i++) 1306 if (!mvm->phy_ctxts[i].ref) 1307 return &mvm->phy_ctxts[i]; 1308 1309 IWL_ERR(mvm, "No available PHY context\n"); 1310 return NULL; 1311 } 1312 1313 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1314 s16 tx_power) 1315 { 1316 int len; 1317 struct iwl_dev_tx_power_cmd cmd = { 1318 .common.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC), 1319 .common.mac_context_id = 1320 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id), 1321 .common.pwr_restriction = cpu_to_le16(8 * tx_power), 1322 }; 1323 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 1324 REDUCE_TX_POWER_CMD, 1325 IWL_FW_CMD_VER_UNKNOWN); 1326 1327 if (tx_power == IWL_DEFAULT_MAX_TX_POWER) 1328 cmd.common.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER); 1329 1330 if (cmd_ver == 6) 1331 len = sizeof(cmd.v6); 1332 else if (fw_has_api(&mvm->fw->ucode_capa, 1333 IWL_UCODE_TLV_API_REDUCE_TX_POWER)) 1334 len = sizeof(cmd.v5); 1335 else if (fw_has_capa(&mvm->fw->ucode_capa, 1336 IWL_UCODE_TLV_CAPA_TX_POWER_ACK)) 1337 len = sizeof(cmd.v4); 1338 else 1339 len = sizeof(cmd.v3); 1340 1341 /* all structs have the same common part, add it */ 1342 len += sizeof(cmd.common); 1343 1344 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd); 1345 } 1346 1347 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw, 1348 struct ieee80211_vif *vif) 1349 { 1350 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1351 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1352 int ret; 1353 1354 mutex_lock(&mvm->mutex); 1355 1356 if (mvmvif->csa_failed) { 1357 mvmvif->csa_failed = false; 1358 ret = -EIO; 1359 goto out_unlock; 1360 } 1361 1362 if (vif->type == NL80211_IFTYPE_STATION) { 1363 struct iwl_mvm_sta *mvmsta; 1364 1365 mvmvif->csa_bcn_pending = false; 1366 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, 1367 mvmvif->ap_sta_id); 1368 1369 if (WARN_ON(!mvmsta)) { 1370 ret = -EIO; 1371 goto out_unlock; 1372 } 1373 1374 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false); 1375 1376 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1377 1378 if (!fw_has_capa(&mvm->fw->ucode_capa, 1379 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { 1380 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 1381 if (ret) 1382 goto out_unlock; 1383 1384 iwl_mvm_stop_session_protection(mvm, vif); 1385 } 1386 } 1387 1388 mvmvif->ps_disabled = false; 1389 1390 ret = iwl_mvm_power_update_ps(mvm); 1391 1392 out_unlock: 1393 mutex_unlock(&mvm->mutex); 1394 1395 return ret; 1396 } 1397 1398 static void iwl_mvm_abort_channel_switch(struct ieee80211_hw *hw, 1399 struct ieee80211_vif *vif) 1400 { 1401 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1402 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1403 struct iwl_chan_switch_te_cmd cmd = { 1404 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 1405 mvmvif->color)), 1406 .action = cpu_to_le32(FW_CTXT_ACTION_REMOVE), 1407 }; 1408 1409 IWL_DEBUG_MAC80211(mvm, "Abort CSA on mac %d\n", mvmvif->id); 1410 1411 mutex_lock(&mvm->mutex); 1412 if (!fw_has_capa(&mvm->fw->ucode_capa, 1413 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) 1414 iwl_mvm_remove_csa_period(mvm, vif); 1415 else 1416 WARN_ON(iwl_mvm_send_cmd_pdu(mvm, 1417 WIDE_ID(MAC_CONF_GROUP, 1418 CHANNEL_SWITCH_TIME_EVENT_CMD), 1419 0, sizeof(cmd), &cmd)); 1420 mutex_unlock(&mvm->mutex); 1421 1422 WARN_ON(iwl_mvm_post_channel_switch(hw, vif)); 1423 } 1424 1425 static void iwl_mvm_channel_switch_disconnect_wk(struct work_struct *wk) 1426 { 1427 struct iwl_mvm *mvm; 1428 struct iwl_mvm_vif *mvmvif; 1429 struct ieee80211_vif *vif; 1430 1431 mvmvif = container_of(wk, struct iwl_mvm_vif, csa_work.work); 1432 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 1433 mvm = mvmvif->mvm; 1434 1435 iwl_mvm_abort_channel_switch(mvm->hw, vif); 1436 ieee80211_chswitch_done(vif, false); 1437 } 1438 1439 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, 1440 struct ieee80211_vif *vif) 1441 { 1442 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1443 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1444 int ret; 1445 1446 mvmvif->mvm = mvm; 1447 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); 1448 1449 /* 1450 * Not much to do here. The stack will not allow interface 1451 * types or combinations that we didn't advertise, so we 1452 * don't really have to check the types. 1453 */ 1454 1455 mutex_lock(&mvm->mutex); 1456 1457 /* make sure that beacon statistics don't go backwards with FW reset */ 1458 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1459 mvmvif->beacon_stats.accu_num_beacons += 1460 mvmvif->beacon_stats.num_beacons; 1461 1462 /* Allocate resources for the MAC context, and add it to the fw */ 1463 ret = iwl_mvm_mac_ctxt_init(mvm, vif); 1464 if (ret) 1465 goto out_unlock; 1466 1467 rcu_assign_pointer(mvm->vif_id_to_mac[mvmvif->id], vif); 1468 1469 /* Counting number of interfaces is needed for legacy PM */ 1470 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1471 mvm->vif_count++; 1472 1473 /* 1474 * The AP binding flow can be done only after the beacon 1475 * template is configured (which happens only in the mac80211 1476 * start_ap() flow), and adding the broadcast station can happen 1477 * only after the binding. 1478 * In addition, since modifying the MAC before adding a bcast 1479 * station is not allowed by the FW, delay the adding of MAC context to 1480 * the point where we can also add the bcast station. 1481 * In short: there's not much we can do at this point, other than 1482 * allocating resources :) 1483 */ 1484 if (vif->type == NL80211_IFTYPE_AP || 1485 vif->type == NL80211_IFTYPE_ADHOC) { 1486 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 1487 if (ret) { 1488 IWL_ERR(mvm, "Failed to allocate bcast sta\n"); 1489 goto out_release; 1490 } 1491 1492 /* 1493 * Only queue for this station is the mcast queue, 1494 * which shouldn't be in TFD mask anyway 1495 */ 1496 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta, 1497 0, vif->type, 1498 IWL_STA_MULTICAST); 1499 if (ret) 1500 goto out_release; 1501 1502 iwl_mvm_vif_dbgfs_register(mvm, vif); 1503 goto out_unlock; 1504 } 1505 1506 mvmvif->features |= hw->netdev_features; 1507 1508 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 1509 if (ret) 1510 goto out_release; 1511 1512 ret = iwl_mvm_power_update_mac(mvm); 1513 if (ret) 1514 goto out_remove_mac; 1515 1516 /* beacon filtering */ 1517 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 1518 if (ret) 1519 goto out_remove_mac; 1520 1521 if (!mvm->bf_allowed_vif && 1522 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) { 1523 mvm->bf_allowed_vif = mvmvif; 1524 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 1525 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 1526 } 1527 1528 /* 1529 * P2P_DEVICE interface does not have a channel context assigned to it, 1530 * so a dedicated PHY context is allocated to it and the corresponding 1531 * MAC context is bound to it at this stage. 1532 */ 1533 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1534 1535 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 1536 if (!mvmvif->phy_ctxt) { 1537 ret = -ENOSPC; 1538 goto out_free_bf; 1539 } 1540 1541 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 1542 ret = iwl_mvm_binding_add_vif(mvm, vif); 1543 if (ret) 1544 goto out_unref_phy; 1545 1546 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif); 1547 if (ret) 1548 goto out_unbind; 1549 1550 /* Save a pointer to p2p device vif, so it can later be used to 1551 * update the p2p device MAC when a GO is started/stopped */ 1552 mvm->p2p_device_vif = vif; 1553 } 1554 1555 iwl_mvm_tcm_add_vif(mvm, vif); 1556 INIT_DELAYED_WORK(&mvmvif->csa_work, 1557 iwl_mvm_channel_switch_disconnect_wk); 1558 1559 if (vif->type == NL80211_IFTYPE_MONITOR) 1560 mvm->monitor_on = true; 1561 1562 iwl_mvm_vif_dbgfs_register(mvm, vif); 1563 goto out_unlock; 1564 1565 out_unbind: 1566 iwl_mvm_binding_remove_vif(mvm, vif); 1567 out_unref_phy: 1568 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1569 out_free_bf: 1570 if (mvm->bf_allowed_vif == mvmvif) { 1571 mvm->bf_allowed_vif = NULL; 1572 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1573 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1574 } 1575 out_remove_mac: 1576 mvmvif->phy_ctxt = NULL; 1577 iwl_mvm_mac_ctxt_remove(mvm, vif); 1578 out_release: 1579 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1580 mvm->vif_count--; 1581 out_unlock: 1582 mutex_unlock(&mvm->mutex); 1583 1584 return ret; 1585 } 1586 1587 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm, 1588 struct ieee80211_vif *vif) 1589 { 1590 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1591 /* 1592 * Flush the ROC worker which will flush the OFFCHANNEL queue. 1593 * We assume here that all the packets sent to the OFFCHANNEL 1594 * queue are sent in ROC session. 1595 */ 1596 flush_work(&mvm->roc_done_wk); 1597 } 1598 } 1599 1600 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, 1601 struct ieee80211_vif *vif) 1602 { 1603 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1604 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1605 struct iwl_probe_resp_data *probe_data; 1606 1607 iwl_mvm_prepare_mac_removal(mvm, vif); 1608 1609 if (!(vif->type == NL80211_IFTYPE_AP || 1610 vif->type == NL80211_IFTYPE_ADHOC)) 1611 iwl_mvm_tcm_rm_vif(mvm, vif); 1612 1613 mutex_lock(&mvm->mutex); 1614 1615 probe_data = rcu_dereference_protected(mvmvif->probe_resp_data, 1616 lockdep_is_held(&mvm->mutex)); 1617 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); 1618 if (probe_data) 1619 kfree_rcu(probe_data, rcu_head); 1620 1621 if (mvm->bf_allowed_vif == mvmvif) { 1622 mvm->bf_allowed_vif = NULL; 1623 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1624 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1625 } 1626 1627 if (vif->bss_conf.ftm_responder) 1628 memset(&mvm->ftm_resp_stats, 0, sizeof(mvm->ftm_resp_stats)); 1629 1630 iwl_mvm_vif_dbgfs_clean(mvm, vif); 1631 1632 /* 1633 * For AP/GO interface, the tear down of the resources allocated to the 1634 * interface is be handled as part of the stop_ap flow. 1635 */ 1636 if (vif->type == NL80211_IFTYPE_AP || 1637 vif->type == NL80211_IFTYPE_ADHOC) { 1638 #ifdef CONFIG_NL80211_TESTMODE 1639 if (vif == mvm->noa_vif) { 1640 mvm->noa_vif = NULL; 1641 mvm->noa_duration = 0; 1642 } 1643 #endif 1644 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta); 1645 iwl_mvm_dealloc_bcast_sta(mvm, vif); 1646 goto out_release; 1647 } 1648 1649 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1650 mvm->p2p_device_vif = NULL; 1651 iwl_mvm_rm_p2p_bcast_sta(mvm, vif); 1652 iwl_mvm_binding_remove_vif(mvm, vif); 1653 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1654 mvmvif->phy_ctxt = NULL; 1655 } 1656 1657 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE) 1658 mvm->vif_count--; 1659 1660 iwl_mvm_power_update_mac(mvm); 1661 iwl_mvm_mac_ctxt_remove(mvm, vif); 1662 1663 RCU_INIT_POINTER(mvm->vif_id_to_mac[mvmvif->id], NULL); 1664 1665 if (vif->type == NL80211_IFTYPE_MONITOR) 1666 mvm->monitor_on = false; 1667 1668 out_release: 1669 mutex_unlock(&mvm->mutex); 1670 } 1671 1672 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed) 1673 { 1674 return 0; 1675 } 1676 1677 struct iwl_mvm_mc_iter_data { 1678 struct iwl_mvm *mvm; 1679 int port_id; 1680 }; 1681 1682 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac, 1683 struct ieee80211_vif *vif) 1684 { 1685 struct iwl_mvm_mc_iter_data *data = _data; 1686 struct iwl_mvm *mvm = data->mvm; 1687 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd; 1688 struct iwl_host_cmd hcmd = { 1689 .id = MCAST_FILTER_CMD, 1690 .flags = CMD_ASYNC, 1691 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1692 }; 1693 int ret, len; 1694 1695 /* if we don't have free ports, mcast frames will be dropped */ 1696 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM)) 1697 return; 1698 1699 if (vif->type != NL80211_IFTYPE_STATION || 1700 !vif->bss_conf.assoc) 1701 return; 1702 1703 cmd->port_id = data->port_id++; 1704 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 1705 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4); 1706 1707 hcmd.len[0] = len; 1708 hcmd.data[0] = cmd; 1709 1710 ret = iwl_mvm_send_cmd(mvm, &hcmd); 1711 if (ret) 1712 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret); 1713 } 1714 1715 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm) 1716 { 1717 struct iwl_mvm_mc_iter_data iter_data = { 1718 .mvm = mvm, 1719 }; 1720 1721 lockdep_assert_held(&mvm->mutex); 1722 1723 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd)) 1724 return; 1725 1726 ieee80211_iterate_active_interfaces_atomic( 1727 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1728 iwl_mvm_mc_iface_iterator, &iter_data); 1729 } 1730 1731 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw, 1732 struct netdev_hw_addr_list *mc_list) 1733 { 1734 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1735 struct iwl_mcast_filter_cmd *cmd; 1736 struct netdev_hw_addr *addr; 1737 int addr_count; 1738 bool pass_all; 1739 int len; 1740 1741 addr_count = netdev_hw_addr_list_count(mc_list); 1742 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES || 1743 IWL_MVM_FW_MCAST_FILTER_PASS_ALL; 1744 if (pass_all) 1745 addr_count = 0; 1746 1747 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4); 1748 cmd = kzalloc(len, GFP_ATOMIC); 1749 if (!cmd) 1750 return 0; 1751 1752 if (pass_all) { 1753 cmd->pass_all = 1; 1754 return (u64)(unsigned long)cmd; 1755 } 1756 1757 netdev_hw_addr_list_for_each(addr, mc_list) { 1758 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n", 1759 cmd->count, addr->addr); 1760 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN], 1761 addr->addr, ETH_ALEN); 1762 cmd->count++; 1763 } 1764 1765 return (u64)(unsigned long)cmd; 1766 } 1767 1768 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw, 1769 unsigned int changed_flags, 1770 unsigned int *total_flags, 1771 u64 multicast) 1772 { 1773 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1774 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast; 1775 1776 mutex_lock(&mvm->mutex); 1777 1778 /* replace previous configuration */ 1779 kfree(mvm->mcast_filter_cmd); 1780 mvm->mcast_filter_cmd = cmd; 1781 1782 if (!cmd) 1783 goto out; 1784 1785 if (changed_flags & FIF_ALLMULTI) 1786 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI); 1787 1788 if (cmd->pass_all) 1789 cmd->count = 0; 1790 1791 iwl_mvm_recalc_multicast(mvm); 1792 out: 1793 mutex_unlock(&mvm->mutex); 1794 *total_flags = 0; 1795 } 1796 1797 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw, 1798 struct ieee80211_vif *vif, 1799 unsigned int filter_flags, 1800 unsigned int changed_flags) 1801 { 1802 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1803 1804 /* We support only filter for probe requests */ 1805 if (!(changed_flags & FIF_PROBE_REQ)) 1806 return; 1807 1808 /* Supported only for p2p client interfaces */ 1809 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1810 !vif->p2p) 1811 return; 1812 1813 mutex_lock(&mvm->mutex); 1814 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1815 mutex_unlock(&mvm->mutex); 1816 } 1817 1818 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 1819 struct iwl_bcast_iter_data { 1820 struct iwl_mvm *mvm; 1821 struct iwl_bcast_filter_cmd *cmd; 1822 u8 current_filter; 1823 }; 1824 1825 static void 1826 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif, 1827 const struct iwl_fw_bcast_filter *in_filter, 1828 struct iwl_fw_bcast_filter *out_filter) 1829 { 1830 struct iwl_fw_bcast_filter_attr *attr; 1831 int i; 1832 1833 memcpy(out_filter, in_filter, sizeof(*out_filter)); 1834 1835 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) { 1836 attr = &out_filter->attrs[i]; 1837 1838 if (!attr->mask) 1839 break; 1840 1841 switch (attr->reserved1) { 1842 case cpu_to_le16(BC_FILTER_MAGIC_IP): 1843 if (vif->bss_conf.arp_addr_cnt != 1) { 1844 attr->mask = 0; 1845 continue; 1846 } 1847 1848 attr->val = vif->bss_conf.arp_addr_list[0]; 1849 break; 1850 case cpu_to_le16(BC_FILTER_MAGIC_MAC): 1851 attr->val = *(__be32 *)&vif->addr[2]; 1852 break; 1853 default: 1854 break; 1855 } 1856 attr->reserved1 = 0; 1857 out_filter->num_attrs++; 1858 } 1859 } 1860 1861 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac, 1862 struct ieee80211_vif *vif) 1863 { 1864 struct iwl_bcast_iter_data *data = _data; 1865 struct iwl_mvm *mvm = data->mvm; 1866 struct iwl_bcast_filter_cmd *cmd = data->cmd; 1867 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1868 struct iwl_fw_bcast_mac *bcast_mac; 1869 int i; 1870 1871 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs))) 1872 return; 1873 1874 bcast_mac = &cmd->macs[mvmvif->id]; 1875 1876 /* 1877 * enable filtering only for associated stations, but not for P2P 1878 * Clients 1879 */ 1880 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p || 1881 !vif->bss_conf.assoc) 1882 return; 1883 1884 bcast_mac->default_discard = 1; 1885 1886 /* copy all configured filters */ 1887 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) { 1888 /* 1889 * Make sure we don't exceed our filters limit. 1890 * if there is still a valid filter to be configured, 1891 * be on the safe side and just allow bcast for this mac. 1892 */ 1893 if (WARN_ON_ONCE(data->current_filter >= 1894 ARRAY_SIZE(cmd->filters))) { 1895 bcast_mac->default_discard = 0; 1896 bcast_mac->attached_filters = 0; 1897 break; 1898 } 1899 1900 iwl_mvm_set_bcast_filter(vif, 1901 &mvm->bcast_filters[i], 1902 &cmd->filters[data->current_filter]); 1903 1904 /* skip current filter if it contains no attributes */ 1905 if (!cmd->filters[data->current_filter].num_attrs) 1906 continue; 1907 1908 /* attach the filter to current mac */ 1909 bcast_mac->attached_filters |= 1910 cpu_to_le16(BIT(data->current_filter)); 1911 1912 data->current_filter++; 1913 } 1914 } 1915 1916 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm, 1917 struct iwl_bcast_filter_cmd *cmd) 1918 { 1919 struct iwl_bcast_iter_data iter_data = { 1920 .mvm = mvm, 1921 .cmd = cmd, 1922 }; 1923 1924 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL) 1925 return false; 1926 1927 memset(cmd, 0, sizeof(*cmd)); 1928 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters); 1929 cmd->max_macs = ARRAY_SIZE(cmd->macs); 1930 1931 #ifdef CONFIG_IWLWIFI_DEBUGFS 1932 /* use debugfs filters/macs if override is configured */ 1933 if (mvm->dbgfs_bcast_filtering.override) { 1934 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters, 1935 sizeof(cmd->filters)); 1936 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs, 1937 sizeof(cmd->macs)); 1938 return true; 1939 } 1940 #endif 1941 1942 /* if no filters are configured, do nothing */ 1943 if (!mvm->bcast_filters) 1944 return false; 1945 1946 /* configure and attach these filters for each associated sta vif */ 1947 ieee80211_iterate_active_interfaces( 1948 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1949 iwl_mvm_bcast_filter_iterator, &iter_data); 1950 1951 return true; 1952 } 1953 1954 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1955 { 1956 struct iwl_bcast_filter_cmd cmd; 1957 1958 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING)) 1959 return 0; 1960 1961 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) 1962 return 0; 1963 1964 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0, 1965 sizeof(cmd), &cmd); 1966 } 1967 #else 1968 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1969 { 1970 return 0; 1971 } 1972 #endif 1973 1974 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm, 1975 struct ieee80211_vif *vif) 1976 { 1977 struct iwl_mu_group_mgmt_cmd cmd = {}; 1978 1979 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership, 1980 WLAN_MEMBERSHIP_LEN); 1981 memcpy(cmd.user_position, vif->bss_conf.mu_group.position, 1982 WLAN_USER_POSITION_LEN); 1983 1984 return iwl_mvm_send_cmd_pdu(mvm, 1985 WIDE_ID(DATA_PATH_GROUP, 1986 UPDATE_MU_GROUPS_CMD), 1987 0, sizeof(cmd), &cmd); 1988 } 1989 1990 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac, 1991 struct ieee80211_vif *vif) 1992 { 1993 if (vif->mu_mimo_owner) { 1994 struct iwl_mu_group_mgmt_notif *notif = _data; 1995 1996 /* 1997 * MU-MIMO Group Id action frame is little endian. We treat 1998 * the data received from firmware as if it came from the 1999 * action frame, so no conversion is needed. 2000 */ 2001 ieee80211_update_mu_groups(vif, 2002 (u8 *)¬if->membership_status, 2003 (u8 *)¬if->user_position); 2004 } 2005 } 2006 2007 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm, 2008 struct iwl_rx_cmd_buffer *rxb) 2009 { 2010 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2011 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data; 2012 2013 ieee80211_iterate_active_interfaces_atomic( 2014 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 2015 iwl_mvm_mu_mimo_iface_iterator, notif); 2016 } 2017 2018 static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit) 2019 { 2020 u8 byte_num = ppe_pos_bit / 8; 2021 u8 bit_num = ppe_pos_bit % 8; 2022 u8 residue_bits; 2023 u8 res; 2024 2025 if (bit_num <= 5) 2026 return (ppe[byte_num] >> bit_num) & 2027 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1); 2028 2029 /* 2030 * If bit_num > 5, we have to combine bits with next byte. 2031 * Calculate how many bits we need to take from current byte (called 2032 * here "residue_bits"), and add them to bits from next byte. 2033 */ 2034 2035 residue_bits = 8 - bit_num; 2036 2037 res = (ppe[byte_num + 1] & 2038 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE - residue_bits) - 1)) << 2039 residue_bits; 2040 res += (ppe[byte_num] >> bit_num) & (BIT(residue_bits) - 1); 2041 2042 return res; 2043 } 2044 2045 static void iwl_mvm_cfg_he_sta(struct iwl_mvm *mvm, 2046 struct ieee80211_vif *vif, u8 sta_id) 2047 { 2048 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2049 struct iwl_he_sta_context_cmd sta_ctxt_cmd = { 2050 .sta_id = sta_id, 2051 .tid_limit = IWL_MAX_TID_COUNT, 2052 .bss_color = vif->bss_conf.he_bss_color.color, 2053 .htc_trig_based_pkt_ext = vif->bss_conf.htc_trig_based_pkt_ext, 2054 .frame_time_rts_th = 2055 cpu_to_le16(vif->bss_conf.frame_time_rts_th), 2056 }; 2057 int size = fw_has_api(&mvm->fw->ucode_capa, 2058 IWL_UCODE_TLV_API_MBSSID_HE) ? 2059 sizeof(sta_ctxt_cmd) : 2060 sizeof(struct iwl_he_sta_context_cmd_v1); 2061 struct ieee80211_sta *sta; 2062 u32 flags; 2063 int i; 2064 2065 rcu_read_lock(); 2066 2067 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_ctxt_cmd.sta_id]); 2068 if (IS_ERR_OR_NULL(sta)) { 2069 rcu_read_unlock(); 2070 WARN(1, "Can't find STA to configure HE\n"); 2071 return; 2072 } 2073 2074 if (!sta->he_cap.has_he) { 2075 rcu_read_unlock(); 2076 return; 2077 } 2078 2079 flags = 0; 2080 2081 /* Block 26-tone RU OFDMA transmissions */ 2082 if (mvmvif->he_ru_2mhz_block) 2083 flags |= STA_CTXT_HE_RU_2MHZ_BLOCK; 2084 2085 /* HTC flags */ 2086 if (sta->he_cap.he_cap_elem.mac_cap_info[0] & 2087 IEEE80211_HE_MAC_CAP0_HTC_HE) 2088 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_SUPPORT); 2089 if ((sta->he_cap.he_cap_elem.mac_cap_info[1] & 2090 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION) || 2091 (sta->he_cap.he_cap_elem.mac_cap_info[2] & 2092 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION)) { 2093 u8 link_adap = 2094 ((sta->he_cap.he_cap_elem.mac_cap_info[2] & 2095 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION) << 1) + 2096 (sta->he_cap.he_cap_elem.mac_cap_info[1] & 2097 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION); 2098 2099 if (link_adap == 2) 2100 sta_ctxt_cmd.htc_flags |= 2101 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_UNSOLICITED); 2102 else if (link_adap == 3) 2103 sta_ctxt_cmd.htc_flags |= 2104 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_BOTH); 2105 } 2106 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_BSR) 2107 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BSR_SUPP); 2108 if (sta->he_cap.he_cap_elem.mac_cap_info[3] & 2109 IEEE80211_HE_MAC_CAP3_OMI_CONTROL) 2110 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_OMI_SUPP); 2111 if (sta->he_cap.he_cap_elem.mac_cap_info[4] & IEEE80211_HE_MAC_CAP4_BQR) 2112 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BQR_SUPP); 2113 2114 /* 2115 * Initialize the PPE thresholds to "None" (7), as described in Table 2116 * 9-262ac of 80211.ax/D3.0. 2117 */ 2118 memset(&sta_ctxt_cmd.pkt_ext, 7, sizeof(sta_ctxt_cmd.pkt_ext)); 2119 2120 /* If PPE Thresholds exist, parse them into a FW-familiar format. */ 2121 if (sta->he_cap.he_cap_elem.phy_cap_info[6] & 2122 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) { 2123 u8 nss = (sta->he_cap.ppe_thres[0] & 2124 IEEE80211_PPE_THRES_NSS_MASK) + 1; 2125 u8 ru_index_bitmap = 2126 (sta->he_cap.ppe_thres[0] & 2127 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK) >> 2128 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS; 2129 u8 *ppe = &sta->he_cap.ppe_thres[0]; 2130 u8 ppe_pos_bit = 7; /* Starting after PPE header */ 2131 2132 /* 2133 * FW currently supports only nss == MAX_HE_SUPP_NSS 2134 * 2135 * If nss > MAX: we can ignore values we don't support 2136 * If nss < MAX: we can set zeros in other streams 2137 */ 2138 if (nss > MAX_HE_SUPP_NSS) { 2139 IWL_INFO(mvm, "Got NSS = %d - trimming to %d\n", nss, 2140 MAX_HE_SUPP_NSS); 2141 nss = MAX_HE_SUPP_NSS; 2142 } 2143 2144 for (i = 0; i < nss; i++) { 2145 u8 ru_index_tmp = ru_index_bitmap << 1; 2146 u8 bw; 2147 2148 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; bw++) { 2149 ru_index_tmp >>= 1; 2150 if (!(ru_index_tmp & 1)) 2151 continue; 2152 2153 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][1] = 2154 iwl_mvm_he_get_ppe_val(ppe, 2155 ppe_pos_bit); 2156 ppe_pos_bit += 2157 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2158 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][0] = 2159 iwl_mvm_he_get_ppe_val(ppe, 2160 ppe_pos_bit); 2161 ppe_pos_bit += 2162 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2163 } 2164 } 2165 2166 flags |= STA_CTXT_HE_PACKET_EXT; 2167 } else if ((sta->he_cap.he_cap_elem.phy_cap_info[9] & 2168 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) != 2169 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_RESERVED) { 2170 int low_th = -1; 2171 int high_th = -1; 2172 2173 /* Take the PPE thresholds from the nominal padding info */ 2174 switch (sta->he_cap.he_cap_elem.phy_cap_info[9] & 2175 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) { 2176 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_0US: 2177 low_th = IWL_HE_PKT_EXT_NONE; 2178 high_th = IWL_HE_PKT_EXT_NONE; 2179 break; 2180 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_8US: 2181 low_th = IWL_HE_PKT_EXT_BPSK; 2182 high_th = IWL_HE_PKT_EXT_NONE; 2183 break; 2184 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_16US: 2185 low_th = IWL_HE_PKT_EXT_NONE; 2186 high_th = IWL_HE_PKT_EXT_BPSK; 2187 break; 2188 } 2189 2190 /* Set the PPE thresholds accordingly */ 2191 if (low_th >= 0 && high_th >= 0) { 2192 struct iwl_he_pkt_ext *pkt_ext = 2193 (struct iwl_he_pkt_ext *)&sta_ctxt_cmd.pkt_ext; 2194 2195 for (i = 0; i < MAX_HE_SUPP_NSS; i++) { 2196 u8 bw; 2197 2198 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; 2199 bw++) { 2200 pkt_ext->pkt_ext_qam_th[i][bw][0] = 2201 low_th; 2202 pkt_ext->pkt_ext_qam_th[i][bw][1] = 2203 high_th; 2204 } 2205 } 2206 2207 flags |= STA_CTXT_HE_PACKET_EXT; 2208 } 2209 } 2210 2211 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & 2212 IEEE80211_HE_MAC_CAP2_32BIT_BA_BITMAP) 2213 flags |= STA_CTXT_HE_32BIT_BA_BITMAP; 2214 2215 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & 2216 IEEE80211_HE_MAC_CAP2_ACK_EN) 2217 flags |= STA_CTXT_HE_ACK_ENABLED; 2218 2219 rcu_read_unlock(); 2220 2221 /* Mark MU EDCA as enabled, unless none detected on some AC */ 2222 flags |= STA_CTXT_HE_MU_EDCA_CW; 2223 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 2224 struct ieee80211_he_mu_edca_param_ac_rec *mu_edca = 2225 &mvmvif->queue_params[i].mu_edca_param_rec; 2226 u8 ac = iwl_mvm_mac80211_ac_to_ucode_ac(i); 2227 2228 if (!mvmvif->queue_params[i].mu_edca) { 2229 flags &= ~STA_CTXT_HE_MU_EDCA_CW; 2230 break; 2231 } 2232 2233 sta_ctxt_cmd.trig_based_txf[ac].cwmin = 2234 cpu_to_le16(mu_edca->ecw_min_max & 0xf); 2235 sta_ctxt_cmd.trig_based_txf[ac].cwmax = 2236 cpu_to_le16((mu_edca->ecw_min_max & 0xf0) >> 4); 2237 sta_ctxt_cmd.trig_based_txf[ac].aifsn = 2238 cpu_to_le16(mu_edca->aifsn); 2239 sta_ctxt_cmd.trig_based_txf[ac].mu_time = 2240 cpu_to_le16(mu_edca->mu_edca_timer); 2241 } 2242 2243 2244 if (vif->bss_conf.uora_exists) { 2245 flags |= STA_CTXT_HE_TRIG_RND_ALLOC; 2246 2247 sta_ctxt_cmd.rand_alloc_ecwmin = 2248 vif->bss_conf.uora_ocw_range & 0x7; 2249 sta_ctxt_cmd.rand_alloc_ecwmax = 2250 (vif->bss_conf.uora_ocw_range >> 3) & 0x7; 2251 } 2252 2253 if (vif->bss_conf.nontransmitted) { 2254 flags |= STA_CTXT_HE_REF_BSSID_VALID; 2255 ether_addr_copy(sta_ctxt_cmd.ref_bssid_addr, 2256 vif->bss_conf.transmitter_bssid); 2257 sta_ctxt_cmd.max_bssid_indicator = 2258 vif->bss_conf.bssid_indicator; 2259 sta_ctxt_cmd.bssid_index = vif->bss_conf.bssid_index; 2260 sta_ctxt_cmd.ema_ap = vif->bss_conf.ema_ap; 2261 sta_ctxt_cmd.profile_periodicity = 2262 vif->bss_conf.profile_periodicity; 2263 } 2264 2265 sta_ctxt_cmd.flags = cpu_to_le32(flags); 2266 2267 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(STA_HE_CTXT_CMD, 2268 DATA_PATH_GROUP, 0), 2269 0, size, &sta_ctxt_cmd)) 2270 IWL_ERR(mvm, "Failed to config FW to work HE!\n"); 2271 } 2272 2273 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, 2274 struct ieee80211_vif *vif, 2275 struct ieee80211_bss_conf *bss_conf, 2276 u32 changes) 2277 { 2278 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2279 int ret; 2280 2281 /* 2282 * Re-calculate the tsf id, as the master-slave relations depend on the 2283 * beacon interval, which was not known when the station interface was 2284 * added. 2285 */ 2286 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) { 2287 if (vif->bss_conf.he_support && 2288 !iwlwifi_mod_params.disable_11ax) 2289 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id); 2290 2291 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2292 } 2293 2294 /* Update MU EDCA params */ 2295 if (changes & BSS_CHANGED_QOS && mvmvif->associated && 2296 bss_conf->assoc && vif->bss_conf.he_support && 2297 !iwlwifi_mod_params.disable_11ax) 2298 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id); 2299 2300 /* 2301 * If we're not associated yet, take the (new) BSSID before associating 2302 * so the firmware knows. If we're already associated, then use the old 2303 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC 2304 * branch for disassociation below. 2305 */ 2306 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated) 2307 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2308 2309 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid); 2310 if (ret) 2311 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2312 2313 /* after sending it once, adopt mac80211 data */ 2314 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2315 mvmvif->associated = bss_conf->assoc; 2316 2317 if (changes & BSS_CHANGED_ASSOC) { 2318 if (bss_conf->assoc) { 2319 /* clear statistics to get clean beacon counter */ 2320 iwl_mvm_request_statistics(mvm, true); 2321 memset(&mvmvif->beacon_stats, 0, 2322 sizeof(mvmvif->beacon_stats)); 2323 2324 /* add quota for this interface */ 2325 ret = iwl_mvm_update_quotas(mvm, true, NULL); 2326 if (ret) { 2327 IWL_ERR(mvm, "failed to update quotas\n"); 2328 return; 2329 } 2330 2331 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2332 &mvm->status) && 2333 !fw_has_capa(&mvm->fw->ucode_capa, 2334 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) { 2335 /* 2336 * If we're restarting then the firmware will 2337 * obviously have lost synchronisation with 2338 * the AP. It will attempt to synchronise by 2339 * itself, but we can make it more reliable by 2340 * scheduling a session protection time event. 2341 * 2342 * The firmware needs to receive a beacon to 2343 * catch up with synchronisation, use 110% of 2344 * the beacon interval. 2345 * 2346 * Set a large maximum delay to allow for more 2347 * than a single interface. 2348 * 2349 * For new firmware versions, rely on the 2350 * firmware. This is relevant for DCM scenarios 2351 * only anyway. 2352 */ 2353 u32 dur = (11 * vif->bss_conf.beacon_int) / 10; 2354 iwl_mvm_protect_session(mvm, vif, dur, dur, 2355 5 * dur, false); 2356 } 2357 2358 iwl_mvm_sf_update(mvm, vif, false); 2359 iwl_mvm_power_vif_assoc(mvm, vif); 2360 if (vif->p2p) { 2361 iwl_mvm_update_smps(mvm, vif, 2362 IWL_MVM_SMPS_REQ_PROT, 2363 IEEE80211_SMPS_DYNAMIC); 2364 } 2365 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 2366 /* 2367 * If update fails - SF might be running in associated 2368 * mode while disassociated - which is forbidden. 2369 */ 2370 ret = iwl_mvm_sf_update(mvm, vif, false); 2371 WARN_ONCE(ret && 2372 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 2373 &mvm->status), 2374 "Failed to update SF upon disassociation\n"); 2375 2376 /* 2377 * If we get an assert during the connection (after the 2378 * station has been added, but before the vif is set 2379 * to associated), mac80211 will re-add the station and 2380 * then configure the vif. Since the vif is not 2381 * associated, we would remove the station here and 2382 * this would fail the recovery. 2383 */ 2384 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2385 &mvm->status)) { 2386 /* 2387 * Remove AP station now that 2388 * the MAC is unassoc 2389 */ 2390 ret = iwl_mvm_rm_sta_id(mvm, vif, 2391 mvmvif->ap_sta_id); 2392 if (ret) 2393 IWL_ERR(mvm, 2394 "failed to remove AP station\n"); 2395 2396 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 2397 } 2398 2399 /* remove quota for this interface */ 2400 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2401 if (ret) 2402 IWL_ERR(mvm, "failed to update quotas\n"); 2403 2404 /* this will take the cleared BSSID from bss_conf */ 2405 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2406 if (ret) 2407 IWL_ERR(mvm, 2408 "failed to update MAC %pM (clear after unassoc)\n", 2409 vif->addr); 2410 } 2411 2412 /* 2413 * The firmware tracks the MU-MIMO group on its own. 2414 * However, on HW restart we should restore this data. 2415 */ 2416 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2417 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) { 2418 ret = iwl_mvm_update_mu_groups(mvm, vif); 2419 if (ret) 2420 IWL_ERR(mvm, 2421 "failed to update VHT MU_MIMO groups\n"); 2422 } 2423 2424 iwl_mvm_recalc_multicast(mvm); 2425 iwl_mvm_configure_bcast_filter(mvm); 2426 2427 /* reset rssi values */ 2428 mvmvif->bf_data.ave_beacon_signal = 0; 2429 2430 iwl_mvm_bt_coex_vif_change(mvm); 2431 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, 2432 IEEE80211_SMPS_AUTOMATIC); 2433 if (fw_has_capa(&mvm->fw->ucode_capa, 2434 IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2435 iwl_mvm_config_scan(mvm); 2436 } 2437 2438 if (changes & BSS_CHANGED_BEACON_INFO) { 2439 /* 2440 * We received a beacon from the associated AP so 2441 * remove the session protection. 2442 * A firmware with the new API will remove it automatically. 2443 */ 2444 if (!fw_has_capa(&mvm->fw->ucode_capa, 2445 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) 2446 iwl_mvm_stop_session_protection(mvm, vif); 2447 2448 iwl_mvm_sf_update(mvm, vif, false); 2449 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2450 } 2451 2452 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS | 2453 /* 2454 * Send power command on every beacon change, 2455 * because we may have not enabled beacon abort yet. 2456 */ 2457 BSS_CHANGED_BEACON_INFO)) { 2458 ret = iwl_mvm_power_update_mac(mvm); 2459 if (ret) 2460 IWL_ERR(mvm, "failed to update power mode\n"); 2461 } 2462 2463 if (changes & BSS_CHANGED_TXPOWER) { 2464 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2465 bss_conf->txpower); 2466 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2467 } 2468 2469 if (changes & BSS_CHANGED_CQM) { 2470 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n"); 2471 /* reset cqm events tracking */ 2472 mvmvif->bf_data.last_cqm_event = 0; 2473 if (mvmvif->bf_data.bf_enabled) { 2474 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 2475 if (ret) 2476 IWL_ERR(mvm, 2477 "failed to update CQM thresholds\n"); 2478 } 2479 } 2480 2481 if (changes & BSS_CHANGED_ARP_FILTER) { 2482 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n"); 2483 iwl_mvm_configure_bcast_filter(mvm); 2484 } 2485 } 2486 2487 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw, 2488 struct ieee80211_vif *vif) 2489 { 2490 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2491 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2492 int ret, i; 2493 2494 mutex_lock(&mvm->mutex); 2495 2496 /* Send the beacon template */ 2497 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif); 2498 if (ret) 2499 goto out_unlock; 2500 2501 /* 2502 * Re-calculate the tsf id, as the master-slave relations depend on the 2503 * beacon interval, which was not known when the AP interface was added. 2504 */ 2505 if (vif->type == NL80211_IFTYPE_AP) 2506 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2507 2508 mvmvif->ap_assoc_sta_count = 0; 2509 2510 /* Add the mac context */ 2511 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 2512 if (ret) 2513 goto out_unlock; 2514 2515 /* Perform the binding */ 2516 ret = iwl_mvm_binding_add_vif(mvm, vif); 2517 if (ret) 2518 goto out_remove; 2519 2520 /* 2521 * This is not very nice, but the simplest: 2522 * For older FWs adding the mcast sta before the bcast station may 2523 * cause assert 0x2b00. 2524 * This is fixed in later FW so make the order of removal depend on 2525 * the TLV 2526 */ 2527 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2528 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2529 if (ret) 2530 goto out_unbind; 2531 /* 2532 * Send the bcast station. At this stage the TBTT and DTIM time 2533 * events are added and applied to the scheduler 2534 */ 2535 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2536 if (ret) { 2537 iwl_mvm_rm_mcast_sta(mvm, vif); 2538 goto out_unbind; 2539 } 2540 } else { 2541 /* 2542 * Send the bcast station. At this stage the TBTT and DTIM time 2543 * events are added and applied to the scheduler 2544 */ 2545 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2546 if (ret) 2547 goto out_unbind; 2548 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2549 if (ret) { 2550 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2551 goto out_unbind; 2552 } 2553 } 2554 2555 /* must be set before quota calculations */ 2556 mvmvif->ap_ibss_active = true; 2557 2558 /* send all the early keys to the device now */ 2559 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) { 2560 struct ieee80211_key_conf *key = mvmvif->ap_early_keys[i]; 2561 2562 if (!key) 2563 continue; 2564 2565 mvmvif->ap_early_keys[i] = NULL; 2566 2567 ret = __iwl_mvm_mac_set_key(hw, SET_KEY, vif, NULL, key); 2568 if (ret) 2569 goto out_quota_failed; 2570 } 2571 2572 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) { 2573 iwl_mvm_vif_set_low_latency(mvmvif, true, 2574 LOW_LATENCY_VIF_TYPE); 2575 iwl_mvm_send_low_latency_cmd(mvm, true, mvmvif->id); 2576 } 2577 2578 /* power updated needs to be done before quotas */ 2579 iwl_mvm_power_update_mac(mvm); 2580 2581 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2582 if (ret) 2583 goto out_quota_failed; 2584 2585 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2586 if (vif->p2p && mvm->p2p_device_vif) 2587 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2588 2589 iwl_mvm_bt_coex_vif_change(mvm); 2590 2591 /* we don't support TDLS during DCM */ 2592 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2593 iwl_mvm_teardown_tdls_peers(mvm); 2594 2595 iwl_mvm_ftm_restart_responder(mvm, vif); 2596 2597 goto out_unlock; 2598 2599 out_quota_failed: 2600 iwl_mvm_power_update_mac(mvm); 2601 mvmvif->ap_ibss_active = false; 2602 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2603 iwl_mvm_rm_mcast_sta(mvm, vif); 2604 out_unbind: 2605 iwl_mvm_binding_remove_vif(mvm, vif); 2606 out_remove: 2607 iwl_mvm_mac_ctxt_remove(mvm, vif); 2608 out_unlock: 2609 mutex_unlock(&mvm->mutex); 2610 return ret; 2611 } 2612 2613 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw, 2614 struct ieee80211_vif *vif) 2615 { 2616 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2617 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2618 2619 iwl_mvm_prepare_mac_removal(mvm, vif); 2620 2621 mutex_lock(&mvm->mutex); 2622 2623 /* Handle AP stop while in CSA */ 2624 if (rcu_access_pointer(mvm->csa_vif) == vif) { 2625 iwl_mvm_remove_time_event(mvm, mvmvif, 2626 &mvmvif->time_event_data); 2627 RCU_INIT_POINTER(mvm->csa_vif, NULL); 2628 mvmvif->csa_countdown = false; 2629 } 2630 2631 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) { 2632 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 2633 mvm->csa_tx_block_bcn_timeout = 0; 2634 } 2635 2636 mvmvif->ap_ibss_active = false; 2637 mvm->ap_last_beacon_gp2 = 0; 2638 2639 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) { 2640 iwl_mvm_vif_set_low_latency(mvmvif, false, 2641 LOW_LATENCY_VIF_TYPE); 2642 iwl_mvm_send_low_latency_cmd(mvm, false, mvmvif->id); 2643 } 2644 2645 iwl_mvm_bt_coex_vif_change(mvm); 2646 2647 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2648 if (vif->p2p && mvm->p2p_device_vif) 2649 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2650 2651 iwl_mvm_update_quotas(mvm, false, NULL); 2652 2653 iwl_mvm_ftm_responder_clear(mvm, vif); 2654 2655 /* 2656 * This is not very nice, but the simplest: 2657 * For older FWs removing the mcast sta before the bcast station may 2658 * cause assert 0x2b00. 2659 * This is fixed in later FW (which will stop beaconing when removing 2660 * bcast station). 2661 * So make the order of removal depend on the TLV 2662 */ 2663 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2664 iwl_mvm_rm_mcast_sta(mvm, vif); 2665 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2666 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2667 iwl_mvm_rm_mcast_sta(mvm, vif); 2668 iwl_mvm_binding_remove_vif(mvm, vif); 2669 2670 iwl_mvm_power_update_mac(mvm); 2671 2672 iwl_mvm_mac_ctxt_remove(mvm, vif); 2673 2674 mutex_unlock(&mvm->mutex); 2675 } 2676 2677 static void 2678 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm, 2679 struct ieee80211_vif *vif, 2680 struct ieee80211_bss_conf *bss_conf, 2681 u32 changes) 2682 { 2683 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2684 2685 /* Changes will be applied when the AP/IBSS is started */ 2686 if (!mvmvif->ap_ibss_active) 2687 return; 2688 2689 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT | 2690 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) && 2691 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL)) 2692 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2693 2694 /* Need to send a new beacon template to the FW */ 2695 if (changes & BSS_CHANGED_BEACON && 2696 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif)) 2697 IWL_WARN(mvm, "Failed updating beacon data\n"); 2698 2699 if (changes & BSS_CHANGED_TXPOWER) { 2700 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2701 bss_conf->txpower); 2702 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2703 } 2704 2705 if (changes & BSS_CHANGED_FTM_RESPONDER) { 2706 int ret = iwl_mvm_ftm_start_responder(mvm, vif); 2707 2708 if (ret) 2709 IWL_WARN(mvm, "Failed to enable FTM responder (%d)\n", 2710 ret); 2711 } 2712 2713 } 2714 2715 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, 2716 struct ieee80211_vif *vif, 2717 struct ieee80211_bss_conf *bss_conf, 2718 u32 changes) 2719 { 2720 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2721 2722 mutex_lock(&mvm->mutex); 2723 2724 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle) 2725 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2726 2727 switch (vif->type) { 2728 case NL80211_IFTYPE_STATION: 2729 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes); 2730 break; 2731 case NL80211_IFTYPE_AP: 2732 case NL80211_IFTYPE_ADHOC: 2733 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes); 2734 break; 2735 case NL80211_IFTYPE_MONITOR: 2736 if (changes & BSS_CHANGED_MU_GROUPS) 2737 iwl_mvm_update_mu_groups(mvm, vif); 2738 break; 2739 default: 2740 /* shouldn't happen */ 2741 WARN_ON_ONCE(1); 2742 } 2743 2744 mutex_unlock(&mvm->mutex); 2745 } 2746 2747 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, 2748 struct ieee80211_vif *vif, 2749 struct ieee80211_scan_request *hw_req) 2750 { 2751 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2752 int ret; 2753 2754 if (hw_req->req.n_channels == 0 || 2755 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels) 2756 return -EINVAL; 2757 2758 mutex_lock(&mvm->mutex); 2759 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies); 2760 mutex_unlock(&mvm->mutex); 2761 2762 return ret; 2763 } 2764 2765 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw, 2766 struct ieee80211_vif *vif) 2767 { 2768 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2769 2770 mutex_lock(&mvm->mutex); 2771 2772 /* Due to a race condition, it's possible that mac80211 asks 2773 * us to stop a hw_scan when it's already stopped. This can 2774 * happen, for instance, if we stopped the scan ourselves, 2775 * called ieee80211_scan_completed() and the userspace called 2776 * cancel scan scan before ieee80211_scan_work() could run. 2777 * To handle that, simply return if the scan is not running. 2778 */ 2779 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) 2780 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2781 2782 mutex_unlock(&mvm->mutex); 2783 } 2784 2785 static void 2786 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw, 2787 struct ieee80211_sta *sta, u16 tids, 2788 int num_frames, 2789 enum ieee80211_frame_release_type reason, 2790 bool more_data) 2791 { 2792 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2793 2794 /* Called when we need to transmit (a) frame(s) from mac80211 */ 2795 2796 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2797 tids, more_data, false); 2798 } 2799 2800 static void 2801 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw, 2802 struct ieee80211_sta *sta, u16 tids, 2803 int num_frames, 2804 enum ieee80211_frame_release_type reason, 2805 bool more_data) 2806 { 2807 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2808 2809 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */ 2810 2811 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2812 tids, more_data, true); 2813 } 2814 2815 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2816 enum sta_notify_cmd cmd, 2817 struct ieee80211_sta *sta) 2818 { 2819 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2820 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2821 unsigned long txqs = 0, tids = 0; 2822 int tid; 2823 2824 /* 2825 * If we have TVQM then we get too high queue numbers - luckily 2826 * we really shouldn't get here with that because such hardware 2827 * should have firmware supporting buffer station offload. 2828 */ 2829 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 2830 return; 2831 2832 spin_lock_bh(&mvmsta->lock); 2833 for (tid = 0; tid < ARRAY_SIZE(mvmsta->tid_data); tid++) { 2834 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2835 2836 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE) 2837 continue; 2838 2839 __set_bit(tid_data->txq_id, &txqs); 2840 2841 if (iwl_mvm_tid_queued(mvm, tid_data) == 0) 2842 continue; 2843 2844 __set_bit(tid, &tids); 2845 } 2846 2847 switch (cmd) { 2848 case STA_NOTIFY_SLEEP: 2849 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT) 2850 ieee80211_sta_set_buffered(sta, tid, true); 2851 2852 if (txqs) 2853 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true); 2854 /* 2855 * The fw updates the STA to be asleep. Tx packets on the Tx 2856 * queues to this station will not be transmitted. The fw will 2857 * send a Tx response with TX_STATUS_FAIL_DEST_PS. 2858 */ 2859 break; 2860 case STA_NOTIFY_AWAKE: 2861 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA)) 2862 break; 2863 2864 if (txqs) 2865 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false); 2866 iwl_mvm_sta_modify_ps_wake(mvm, sta); 2867 break; 2868 default: 2869 break; 2870 } 2871 spin_unlock_bh(&mvmsta->lock); 2872 } 2873 2874 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2875 struct ieee80211_vif *vif, 2876 enum sta_notify_cmd cmd, 2877 struct ieee80211_sta *sta) 2878 { 2879 __iwl_mvm_mac_sta_notify(hw, cmd, sta); 2880 } 2881 2882 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 2883 { 2884 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2885 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data; 2886 struct ieee80211_sta *sta; 2887 struct iwl_mvm_sta *mvmsta; 2888 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE); 2889 2890 if (WARN_ON(notif->sta_id >= mvm->fw->ucode_capa.num_stations)) 2891 return; 2892 2893 rcu_read_lock(); 2894 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]); 2895 if (WARN_ON(IS_ERR_OR_NULL(sta))) { 2896 rcu_read_unlock(); 2897 return; 2898 } 2899 2900 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2901 2902 if (!mvmsta->vif || 2903 mvmsta->vif->type != NL80211_IFTYPE_AP) { 2904 rcu_read_unlock(); 2905 return; 2906 } 2907 2908 if (mvmsta->sleeping != sleeping) { 2909 mvmsta->sleeping = sleeping; 2910 __iwl_mvm_mac_sta_notify(mvm->hw, 2911 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, 2912 sta); 2913 ieee80211_sta_ps_transition(sta, sleeping); 2914 } 2915 2916 if (sleeping) { 2917 switch (notif->type) { 2918 case IWL_MVM_PM_EVENT_AWAKE: 2919 case IWL_MVM_PM_EVENT_ASLEEP: 2920 break; 2921 case IWL_MVM_PM_EVENT_UAPSD: 2922 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS); 2923 break; 2924 case IWL_MVM_PM_EVENT_PS_POLL: 2925 ieee80211_sta_pspoll(sta); 2926 break; 2927 default: 2928 break; 2929 } 2930 } 2931 2932 rcu_read_unlock(); 2933 } 2934 2935 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw, 2936 struct ieee80211_vif *vif, 2937 struct ieee80211_sta *sta) 2938 { 2939 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2940 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2941 2942 /* 2943 * This is called before mac80211 does RCU synchronisation, 2944 * so here we already invalidate our internal RCU-protected 2945 * station pointer. The rest of the code will thus no longer 2946 * be able to find the station this way, and we don't rely 2947 * on further RCU synchronisation after the sta_state() 2948 * callback deleted the station. 2949 */ 2950 mutex_lock(&mvm->mutex); 2951 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id])) 2952 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 2953 ERR_PTR(-ENOENT)); 2954 2955 mutex_unlock(&mvm->mutex); 2956 } 2957 2958 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2959 const u8 *bssid) 2960 { 2961 int i; 2962 2963 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 2964 struct iwl_mvm_tcm_mac *mdata; 2965 2966 mdata = &mvm->tcm.data[iwl_mvm_vif_from_mac80211(vif)->id]; 2967 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate); 2968 mdata->opened_rx_ba_sessions = false; 2969 } 2970 2971 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT)) 2972 return; 2973 2974 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) { 2975 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2976 return; 2977 } 2978 2979 if (!vif->p2p && 2980 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) { 2981 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2982 return; 2983 } 2984 2985 for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) { 2986 if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) { 2987 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2988 return; 2989 } 2990 } 2991 2992 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 2993 } 2994 2995 static void 2996 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm, 2997 struct ieee80211_vif *vif, u8 *peer_addr, 2998 enum nl80211_tdls_operation action) 2999 { 3000 struct iwl_fw_dbg_trigger_tlv *trig; 3001 struct iwl_fw_dbg_trigger_tdls *tdls_trig; 3002 3003 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 3004 FW_DBG_TRIGGER_TDLS); 3005 if (!trig) 3006 return; 3007 3008 tdls_trig = (void *)trig->data; 3009 3010 if (!(tdls_trig->action_bitmap & BIT(action))) 3011 return; 3012 3013 if (tdls_trig->peer_mode && 3014 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0) 3015 return; 3016 3017 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 3018 "TDLS event occurred, peer %pM, action %d", 3019 peer_addr, action); 3020 } 3021 3022 struct iwl_mvm_he_obss_narrow_bw_ru_data { 3023 bool tolerated; 3024 }; 3025 3026 static void iwl_mvm_check_he_obss_narrow_bw_ru_iter(struct wiphy *wiphy, 3027 struct cfg80211_bss *bss, 3028 void *_data) 3029 { 3030 struct iwl_mvm_he_obss_narrow_bw_ru_data *data = _data; 3031 const struct element *elem; 3032 3033 elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, bss->ies->data, 3034 bss->ies->len); 3035 3036 if (!elem || elem->datalen < 10 || 3037 !(elem->data[10] & 3038 WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT)) { 3039 data->tolerated = false; 3040 } 3041 } 3042 3043 static void iwl_mvm_check_he_obss_narrow_bw_ru(struct ieee80211_hw *hw, 3044 struct ieee80211_vif *vif) 3045 { 3046 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3047 struct iwl_mvm_he_obss_narrow_bw_ru_data iter_data = { 3048 .tolerated = true, 3049 }; 3050 3051 if (!(vif->bss_conf.chandef.chan->flags & IEEE80211_CHAN_RADAR)) { 3052 mvmvif->he_ru_2mhz_block = false; 3053 return; 3054 } 3055 3056 cfg80211_bss_iter(hw->wiphy, &vif->bss_conf.chandef, 3057 iwl_mvm_check_he_obss_narrow_bw_ru_iter, 3058 &iter_data); 3059 3060 /* 3061 * If there is at least one AP on radar channel that cannot 3062 * tolerate 26-tone RU UL OFDMA transmissions using HE TB PPDU. 3063 */ 3064 mvmvif->he_ru_2mhz_block = !iter_data.tolerated; 3065 } 3066 3067 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, 3068 struct ieee80211_vif *vif, 3069 struct ieee80211_sta *sta, 3070 enum ieee80211_sta_state old_state, 3071 enum ieee80211_sta_state new_state) 3072 { 3073 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3074 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3075 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3076 int ret; 3077 3078 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n", 3079 sta->addr, old_state, new_state); 3080 3081 /* this would be a mac80211 bug ... but don't crash */ 3082 if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) 3083 return test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status) ? 0 : -EINVAL; 3084 3085 /* 3086 * If we are in a STA removal flow and in DQA mode: 3087 * 3088 * This is after the sync_rcu part, so the queues have already been 3089 * flushed. No more TXs on their way in mac80211's path, and no more in 3090 * the queues. 3091 * Also, we won't be getting any new TX frames for this station. 3092 * What we might have are deferred TX frames that need to be taken care 3093 * of. 3094 * 3095 * Drop any still-queued deferred-frame before removing the STA, and 3096 * make sure the worker is no longer handling frames for this STA. 3097 */ 3098 if (old_state == IEEE80211_STA_NONE && 3099 new_state == IEEE80211_STA_NOTEXIST) { 3100 flush_work(&mvm->add_stream_wk); 3101 3102 /* 3103 * No need to make sure deferred TX indication is off since the 3104 * worker will already remove it if it was on 3105 */ 3106 } 3107 3108 mutex_lock(&mvm->mutex); 3109 /* track whether or not the station is associated */ 3110 mvm_sta->sta_state = new_state; 3111 3112 if (old_state == IEEE80211_STA_NOTEXIST && 3113 new_state == IEEE80211_STA_NONE) { 3114 /* 3115 * Firmware bug - it'll crash if the beacon interval is less 3116 * than 16. We can't avoid connecting at all, so refuse the 3117 * station state change, this will cause mac80211 to abandon 3118 * attempts to connect to this AP, and eventually wpa_s will 3119 * blacklist the AP... 3120 */ 3121 if (vif->type == NL80211_IFTYPE_STATION && 3122 vif->bss_conf.beacon_int < 16) { 3123 IWL_ERR(mvm, 3124 "AP %pM beacon interval is %d, refusing due to firmware bug!\n", 3125 sta->addr, vif->bss_conf.beacon_int); 3126 ret = -EINVAL; 3127 goto out_unlock; 3128 } 3129 3130 if (vif->type == NL80211_IFTYPE_STATION) 3131 vif->bss_conf.he_support = sta->he_cap.has_he; 3132 3133 if (sta->tdls && 3134 (vif->p2p || 3135 iwl_mvm_tdls_sta_count(mvm, NULL) == 3136 IWL_MVM_TDLS_STA_COUNT || 3137 iwl_mvm_phy_ctx_count(mvm) > 1)) { 3138 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n"); 3139 ret = -EBUSY; 3140 goto out_unlock; 3141 } 3142 3143 ret = iwl_mvm_add_sta(mvm, vif, sta); 3144 if (sta->tdls && ret == 0) { 3145 iwl_mvm_recalc_tdls_state(mvm, vif, true); 3146 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3147 NL80211_TDLS_SETUP); 3148 } 3149 3150 sta->max_rc_amsdu_len = 1; 3151 } else if (old_state == IEEE80211_STA_NONE && 3152 new_state == IEEE80211_STA_AUTH) { 3153 /* 3154 * EBS may be disabled due to previous failures reported by FW. 3155 * Reset EBS status here assuming environment has been changed. 3156 */ 3157 mvm->last_ebs_successful = true; 3158 iwl_mvm_check_uapsd(mvm, vif, sta->addr); 3159 ret = 0; 3160 } else if (old_state == IEEE80211_STA_AUTH && 3161 new_state == IEEE80211_STA_ASSOC) { 3162 if (vif->type == NL80211_IFTYPE_AP) { 3163 vif->bss_conf.he_support = sta->he_cap.has_he; 3164 mvmvif->ap_assoc_sta_count++; 3165 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3166 if (vif->bss_conf.he_support && 3167 !iwlwifi_mod_params.disable_11ax) 3168 iwl_mvm_cfg_he_sta(mvm, vif, mvm_sta->sta_id); 3169 } else if (vif->type == NL80211_IFTYPE_STATION) { 3170 vif->bss_conf.he_support = sta->he_cap.has_he; 3171 3172 mvmvif->he_ru_2mhz_block = false; 3173 if (sta->he_cap.has_he) 3174 iwl_mvm_check_he_obss_narrow_bw_ru(hw, vif); 3175 3176 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3177 } 3178 3179 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3180 false); 3181 ret = iwl_mvm_update_sta(mvm, vif, sta); 3182 } else if (old_state == IEEE80211_STA_ASSOC && 3183 new_state == IEEE80211_STA_AUTHORIZED) { 3184 ret = 0; 3185 3186 /* we don't support TDLS during DCM */ 3187 if (iwl_mvm_phy_ctx_count(mvm) > 1) 3188 iwl_mvm_teardown_tdls_peers(mvm); 3189 3190 if (sta->tdls) 3191 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3192 NL80211_TDLS_ENABLE_LINK); 3193 3194 /* enable beacon filtering */ 3195 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 3196 3197 /* 3198 * Now that the station is authorized, i.e., keys were already 3199 * installed, need to indicate to the FW that 3200 * multicast data frames can be forwarded to the driver 3201 */ 3202 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3203 3204 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3205 true); 3206 } else if (old_state == IEEE80211_STA_AUTHORIZED && 3207 new_state == IEEE80211_STA_ASSOC) { 3208 /* Multicast data frames are no longer allowed */ 3209 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3210 3211 /* disable beacon filtering */ 3212 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 3213 WARN_ON(ret && 3214 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 3215 &mvm->status)); 3216 ret = 0; 3217 } else if (old_state == IEEE80211_STA_ASSOC && 3218 new_state == IEEE80211_STA_AUTH) { 3219 if (vif->type == NL80211_IFTYPE_AP) { 3220 mvmvif->ap_assoc_sta_count--; 3221 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3222 } 3223 ret = 0; 3224 } else if (old_state == IEEE80211_STA_AUTH && 3225 new_state == IEEE80211_STA_NONE) { 3226 ret = 0; 3227 } else if (old_state == IEEE80211_STA_NONE && 3228 new_state == IEEE80211_STA_NOTEXIST) { 3229 ret = iwl_mvm_rm_sta(mvm, vif, sta); 3230 if (sta->tdls) { 3231 iwl_mvm_recalc_tdls_state(mvm, vif, false); 3232 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3233 NL80211_TDLS_DISABLE_LINK); 3234 } 3235 3236 if (unlikely(ret && 3237 test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 3238 &mvm->status))) 3239 ret = 0; 3240 } else { 3241 ret = -EIO; 3242 } 3243 out_unlock: 3244 mutex_unlock(&mvm->mutex); 3245 3246 if (sta->tdls && ret == 0) { 3247 if (old_state == IEEE80211_STA_NOTEXIST && 3248 new_state == IEEE80211_STA_NONE) 3249 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID); 3250 else if (old_state == IEEE80211_STA_NONE && 3251 new_state == IEEE80211_STA_NOTEXIST) 3252 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID); 3253 } 3254 3255 return ret; 3256 } 3257 3258 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 3259 { 3260 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3261 3262 mvm->rts_threshold = value; 3263 3264 return 0; 3265 } 3266 3267 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw, 3268 struct ieee80211_vif *vif, 3269 struct ieee80211_sta *sta, u32 changed) 3270 { 3271 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3272 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3273 3274 if (changed & (IEEE80211_RC_BW_CHANGED | 3275 IEEE80211_RC_SUPP_RATES_CHANGED | 3276 IEEE80211_RC_NSS_CHANGED)) 3277 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3278 true); 3279 3280 if (vif->type == NL80211_IFTYPE_STATION && 3281 changed & IEEE80211_RC_NSS_CHANGED) 3282 iwl_mvm_sf_update(mvm, vif, false); 3283 } 3284 3285 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw, 3286 struct ieee80211_vif *vif, u16 ac, 3287 const struct ieee80211_tx_queue_params *params) 3288 { 3289 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3290 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3291 3292 mvmvif->queue_params[ac] = *params; 3293 3294 /* 3295 * No need to update right away, we'll get BSS_CHANGED_QOS 3296 * The exception is P2P_DEVICE interface which needs immediate update. 3297 */ 3298 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 3299 int ret; 3300 3301 mutex_lock(&mvm->mutex); 3302 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3303 mutex_unlock(&mvm->mutex); 3304 return ret; 3305 } 3306 return 0; 3307 } 3308 3309 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, 3310 struct ieee80211_vif *vif, 3311 u16 req_duration) 3312 { 3313 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3314 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS; 3315 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS; 3316 3317 if (req_duration > duration) 3318 duration = req_duration; 3319 3320 mutex_lock(&mvm->mutex); 3321 /* Try really hard to protect the session and hear a beacon 3322 * The new session protection command allows us to protect the 3323 * session for a much longer time since the firmware will internally 3324 * create two events: a 300TU one with a very high priority that 3325 * won't be fragmented which should be enough for 99% of the cases, 3326 * and another one (which we configure here to be 900TU long) which 3327 * will have a slightly lower priority, but more importantly, can be 3328 * fragmented so that it'll allow other activities to run. 3329 */ 3330 if (fw_has_capa(&mvm->fw->ucode_capa, 3331 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) 3332 iwl_mvm_schedule_session_protection(mvm, vif, 900, 3333 min_duration, false); 3334 else 3335 iwl_mvm_protect_session(mvm, vif, duration, 3336 min_duration, 500, false); 3337 mutex_unlock(&mvm->mutex); 3338 } 3339 3340 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw, 3341 struct ieee80211_vif *vif, 3342 struct cfg80211_sched_scan_request *req, 3343 struct ieee80211_scan_ies *ies) 3344 { 3345 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3346 3347 int ret; 3348 3349 mutex_lock(&mvm->mutex); 3350 3351 if (!vif->bss_conf.idle) { 3352 ret = -EBUSY; 3353 goto out; 3354 } 3355 3356 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED); 3357 3358 out: 3359 mutex_unlock(&mvm->mutex); 3360 return ret; 3361 } 3362 3363 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw, 3364 struct ieee80211_vif *vif) 3365 { 3366 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3367 int ret; 3368 3369 mutex_lock(&mvm->mutex); 3370 3371 /* Due to a race condition, it's possible that mac80211 asks 3372 * us to stop a sched_scan when it's already stopped. This 3373 * can happen, for instance, if we stopped the scan ourselves, 3374 * called ieee80211_sched_scan_stopped() and the userspace called 3375 * stop sched scan scan before ieee80211_sched_scan_stopped_work() 3376 * could run. To handle this, simply return if the scan is 3377 * not running. 3378 */ 3379 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) { 3380 mutex_unlock(&mvm->mutex); 3381 return 0; 3382 } 3383 3384 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false); 3385 mutex_unlock(&mvm->mutex); 3386 iwl_mvm_wait_for_async_handlers(mvm); 3387 3388 return ret; 3389 } 3390 3391 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 3392 enum set_key_cmd cmd, 3393 struct ieee80211_vif *vif, 3394 struct ieee80211_sta *sta, 3395 struct ieee80211_key_conf *key) 3396 { 3397 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3398 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3399 struct iwl_mvm_sta *mvmsta; 3400 struct iwl_mvm_key_pn *ptk_pn; 3401 int keyidx = key->keyidx; 3402 int ret, i; 3403 u8 key_offset; 3404 3405 switch (key->cipher) { 3406 case WLAN_CIPHER_SUITE_TKIP: 3407 if (!mvm->trans->trans_cfg->gen2) { 3408 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; 3409 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3410 } else if (vif->type == NL80211_IFTYPE_STATION) { 3411 key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE; 3412 } else { 3413 IWL_DEBUG_MAC80211(mvm, "Use SW encryption for TKIP\n"); 3414 return -EOPNOTSUPP; 3415 } 3416 break; 3417 case WLAN_CIPHER_SUITE_CCMP: 3418 case WLAN_CIPHER_SUITE_GCMP: 3419 case WLAN_CIPHER_SUITE_GCMP_256: 3420 if (!iwl_mvm_has_new_tx_api(mvm)) 3421 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3422 break; 3423 case WLAN_CIPHER_SUITE_AES_CMAC: 3424 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3425 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3426 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE)); 3427 break; 3428 case WLAN_CIPHER_SUITE_WEP40: 3429 case WLAN_CIPHER_SUITE_WEP104: 3430 if (vif->type == NL80211_IFTYPE_STATION) 3431 break; 3432 if (iwl_mvm_has_new_tx_api(mvm)) 3433 return -EOPNOTSUPP; 3434 /* support HW crypto on TX */ 3435 return 0; 3436 default: 3437 /* currently FW supports only one optional cipher scheme */ 3438 if (hw->n_cipher_schemes && 3439 hw->cipher_schemes->cipher == key->cipher) 3440 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3441 else 3442 return -EOPNOTSUPP; 3443 } 3444 3445 switch (cmd) { 3446 case SET_KEY: 3447 if ((vif->type == NL80211_IFTYPE_ADHOC || 3448 vif->type == NL80211_IFTYPE_AP) && !sta) { 3449 /* 3450 * GTK on AP interface is a TX-only key, return 0; 3451 * on IBSS they're per-station and because we're lazy 3452 * we don't support them for RX, so do the same. 3453 * CMAC/GMAC in AP/IBSS modes must be done in software. 3454 */ 3455 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3456 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3457 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3458 ret = -EOPNOTSUPP; 3459 break; 3460 } 3461 3462 if (key->cipher != WLAN_CIPHER_SUITE_GCMP && 3463 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 && 3464 !iwl_mvm_has_new_tx_api(mvm)) { 3465 key->hw_key_idx = STA_KEY_IDX_INVALID; 3466 ret = 0; 3467 break; 3468 } 3469 3470 if (!mvmvif->ap_ibss_active) { 3471 for (i = 0; 3472 i < ARRAY_SIZE(mvmvif->ap_early_keys); 3473 i++) { 3474 if (!mvmvif->ap_early_keys[i]) { 3475 mvmvif->ap_early_keys[i] = key; 3476 break; 3477 } 3478 } 3479 3480 if (i >= ARRAY_SIZE(mvmvif->ap_early_keys)) 3481 ret = -ENOSPC; 3482 else 3483 ret = 0; 3484 3485 break; 3486 } 3487 } 3488 3489 /* During FW restart, in order to restore the state as it was, 3490 * don't try to reprogram keys we previously failed for. 3491 */ 3492 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3493 key->hw_key_idx == STA_KEY_IDX_INVALID) { 3494 IWL_DEBUG_MAC80211(mvm, 3495 "skip invalid idx key programming during restart\n"); 3496 ret = 0; 3497 break; 3498 } 3499 3500 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3501 sta && iwl_mvm_has_new_rx_api(mvm) && 3502 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3503 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3504 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3505 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3506 struct ieee80211_key_seq seq; 3507 int tid, q; 3508 3509 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3510 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx])); 3511 ptk_pn = kzalloc(struct_size(ptk_pn, q, 3512 mvm->trans->num_rx_queues), 3513 GFP_KERNEL); 3514 if (!ptk_pn) { 3515 ret = -ENOMEM; 3516 break; 3517 } 3518 3519 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 3520 ieee80211_get_key_rx_seq(key, tid, &seq); 3521 for (q = 0; q < mvm->trans->num_rx_queues; q++) 3522 memcpy(ptk_pn->q[q].pn[tid], 3523 seq.ccmp.pn, 3524 IEEE80211_CCMP_PN_LEN); 3525 } 3526 3527 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn); 3528 } 3529 3530 /* in HW restart reuse the index, otherwise request a new one */ 3531 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 3532 key_offset = key->hw_key_idx; 3533 else 3534 key_offset = STA_KEY_IDX_INVALID; 3535 3536 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); 3537 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset); 3538 if (ret) { 3539 IWL_WARN(mvm, "set key failed\n"); 3540 key->hw_key_idx = STA_KEY_IDX_INVALID; 3541 /* 3542 * can't add key for RX, but we don't need it 3543 * in the device for TX so still return 0, 3544 * unless we have new TX API where we cannot 3545 * put key material into the TX_CMD 3546 */ 3547 if (iwl_mvm_has_new_tx_api(mvm)) 3548 ret = -EOPNOTSUPP; 3549 else 3550 ret = 0; 3551 } 3552 3553 break; 3554 case DISABLE_KEY: 3555 ret = -ENOENT; 3556 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) { 3557 if (mvmvif->ap_early_keys[i] == key) { 3558 mvmvif->ap_early_keys[i] = NULL; 3559 ret = 0; 3560 } 3561 } 3562 3563 /* found in pending list - don't do anything else */ 3564 if (ret == 0) 3565 break; 3566 3567 if (key->hw_key_idx == STA_KEY_IDX_INVALID) { 3568 ret = 0; 3569 break; 3570 } 3571 3572 if (sta && iwl_mvm_has_new_rx_api(mvm) && 3573 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3574 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3575 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3576 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3577 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3578 ptk_pn = rcu_dereference_protected( 3579 mvmsta->ptk_pn[keyidx], 3580 lockdep_is_held(&mvm->mutex)); 3581 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL); 3582 if (ptk_pn) 3583 kfree_rcu(ptk_pn, rcu_head); 3584 } 3585 3586 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n"); 3587 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key); 3588 break; 3589 default: 3590 ret = -EINVAL; 3591 } 3592 3593 return ret; 3594 } 3595 3596 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 3597 enum set_key_cmd cmd, 3598 struct ieee80211_vif *vif, 3599 struct ieee80211_sta *sta, 3600 struct ieee80211_key_conf *key) 3601 { 3602 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3603 int ret; 3604 3605 mutex_lock(&mvm->mutex); 3606 ret = __iwl_mvm_mac_set_key(hw, cmd, vif, sta, key); 3607 mutex_unlock(&mvm->mutex); 3608 3609 return ret; 3610 } 3611 3612 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, 3613 struct ieee80211_vif *vif, 3614 struct ieee80211_key_conf *keyconf, 3615 struct ieee80211_sta *sta, 3616 u32 iv32, u16 *phase1key) 3617 { 3618 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3619 3620 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID) 3621 return; 3622 3623 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key); 3624 } 3625 3626 3627 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait, 3628 struct iwl_rx_packet *pkt, void *data) 3629 { 3630 struct iwl_mvm *mvm = 3631 container_of(notif_wait, struct iwl_mvm, notif_wait); 3632 struct iwl_hs20_roc_res *resp; 3633 int resp_len = iwl_rx_packet_payload_len(pkt); 3634 struct iwl_mvm_time_event_data *te_data = data; 3635 3636 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD)) 3637 return true; 3638 3639 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 3640 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n"); 3641 return true; 3642 } 3643 3644 resp = (void *)pkt->data; 3645 3646 IWL_DEBUG_TE(mvm, 3647 "Aux ROC: Received response from ucode: status=%d uid=%d\n", 3648 resp->status, resp->event_unique_id); 3649 3650 te_data->uid = le32_to_cpu(resp->event_unique_id); 3651 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n", 3652 te_data->uid); 3653 3654 spin_lock_bh(&mvm->time_event_lock); 3655 list_add_tail(&te_data->list, &mvm->aux_roc_te_list); 3656 spin_unlock_bh(&mvm->time_event_lock); 3657 3658 return true; 3659 } 3660 3661 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100) 3662 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200) 3663 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600) 3664 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20) 3665 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10) 3666 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm, 3667 struct ieee80211_channel *channel, 3668 struct ieee80211_vif *vif, 3669 int duration) 3670 { 3671 int res; 3672 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3673 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data; 3674 static const u16 time_event_response[] = { HOT_SPOT_CMD }; 3675 struct iwl_notification_wait wait_time_event; 3676 u32 dtim_interval = vif->bss_conf.dtim_period * 3677 vif->bss_conf.beacon_int; 3678 u32 req_dur, delay; 3679 struct iwl_hs20_roc_req aux_roc_req = { 3680 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 3681 .id_and_color = 3682 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)), 3683 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id), 3684 }; 3685 struct iwl_hs20_roc_req_tail *tail = iwl_mvm_chan_info_cmd_tail(mvm, 3686 &aux_roc_req.channel_info); 3687 u16 len = sizeof(aux_roc_req) - iwl_mvm_chan_info_padding(mvm); 3688 3689 /* Set the channel info data */ 3690 iwl_mvm_set_chan_info(mvm, &aux_roc_req.channel_info, channel->hw_value, 3691 iwl_mvm_phy_band_from_nl80211(channel->band), 3692 PHY_VHT_CHANNEL_MODE20, 3693 0); 3694 3695 /* Set the time and duration */ 3696 tail->apply_time = cpu_to_le32(iwl_mvm_get_systime(mvm)); 3697 3698 delay = AUX_ROC_MIN_DELAY; 3699 req_dur = MSEC_TO_TU(duration); 3700 3701 /* 3702 * If we are associated we want the delay time to be at least one 3703 * dtim interval so that the FW can wait until after the DTIM and 3704 * then start the time event, this will potentially allow us to 3705 * remain off-channel for the max duration. 3706 * Since we want to use almost a whole dtim interval we would also 3707 * like the delay to be for 2-3 dtim intervals, in case there are 3708 * other time events with higher priority. 3709 */ 3710 if (vif->bss_conf.assoc) { 3711 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY); 3712 /* We cannot remain off-channel longer than the DTIM interval */ 3713 if (dtim_interval <= req_dur) { 3714 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER; 3715 if (req_dur <= AUX_ROC_MIN_DURATION) 3716 req_dur = dtim_interval - 3717 AUX_ROC_MIN_SAFETY_BUFFER; 3718 } 3719 } 3720 3721 tail->duration = cpu_to_le32(req_dur); 3722 tail->apply_time_max_delay = cpu_to_le32(delay); 3723 3724 IWL_DEBUG_TE(mvm, 3725 "ROC: Requesting to remain on channel %u for %ums\n", 3726 channel->hw_value, req_dur); 3727 IWL_DEBUG_TE(mvm, 3728 "\t(requested = %ums, max_delay = %ums, dtim_interval = %ums)\n", 3729 duration, delay, dtim_interval); 3730 3731 /* Set the node address */ 3732 memcpy(tail->node_addr, vif->addr, ETH_ALEN); 3733 3734 lockdep_assert_held(&mvm->mutex); 3735 3736 spin_lock_bh(&mvm->time_event_lock); 3737 3738 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) { 3739 spin_unlock_bh(&mvm->time_event_lock); 3740 return -EIO; 3741 } 3742 3743 te_data->vif = vif; 3744 te_data->duration = duration; 3745 te_data->id = HOT_SPOT_CMD; 3746 3747 spin_unlock_bh(&mvm->time_event_lock); 3748 3749 /* 3750 * Use a notification wait, which really just processes the 3751 * command response and doesn't wait for anything, in order 3752 * to be able to process the response and get the UID inside 3753 * the RX path. Using CMD_WANT_SKB doesn't work because it 3754 * stores the buffer and then wakes up this thread, by which 3755 * time another notification (that the time event started) 3756 * might already be processed unsuccessfully. 3757 */ 3758 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event, 3759 time_event_response, 3760 ARRAY_SIZE(time_event_response), 3761 iwl_mvm_rx_aux_roc, te_data); 3762 3763 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, len, 3764 &aux_roc_req); 3765 3766 if (res) { 3767 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res); 3768 iwl_remove_notification(&mvm->notif_wait, &wait_time_event); 3769 goto out_clear_te; 3770 } 3771 3772 /* No need to wait for anything, so just pass 1 (0 isn't valid) */ 3773 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1); 3774 /* should never fail */ 3775 WARN_ON_ONCE(res); 3776 3777 if (res) { 3778 out_clear_te: 3779 spin_lock_bh(&mvm->time_event_lock); 3780 iwl_mvm_te_clear_data(mvm, te_data); 3781 spin_unlock_bh(&mvm->time_event_lock); 3782 } 3783 3784 return res; 3785 } 3786 3787 static int iwl_mvm_roc(struct ieee80211_hw *hw, 3788 struct ieee80211_vif *vif, 3789 struct ieee80211_channel *channel, 3790 int duration, 3791 enum ieee80211_roc_type type) 3792 { 3793 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3794 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3795 struct cfg80211_chan_def chandef; 3796 struct iwl_mvm_phy_ctxt *phy_ctxt; 3797 int ret, i; 3798 3799 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value, 3800 duration, type); 3801 3802 /* 3803 * Flush the done work, just in case it's still pending, so that 3804 * the work it does can complete and we can accept new frames. 3805 */ 3806 flush_work(&mvm->roc_done_wk); 3807 3808 mutex_lock(&mvm->mutex); 3809 3810 switch (vif->type) { 3811 case NL80211_IFTYPE_STATION: 3812 if (fw_has_capa(&mvm->fw->ucode_capa, 3813 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) { 3814 /* Use aux roc framework (HS20) */ 3815 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 3816 ADD_STA, 0) >= 12) { 3817 u32 lmac_id; 3818 3819 lmac_id = iwl_mvm_get_lmac_id(mvm->fw, 3820 channel->band); 3821 ret = iwl_mvm_add_aux_sta(mvm, lmac_id); 3822 if (WARN(ret, 3823 "Failed to allocate aux station")) 3824 goto out_unlock; 3825 } 3826 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel, 3827 vif, duration); 3828 goto out_unlock; 3829 } 3830 IWL_ERR(mvm, "hotspot not supported\n"); 3831 ret = -EINVAL; 3832 goto out_unlock; 3833 case NL80211_IFTYPE_P2P_DEVICE: 3834 /* handle below */ 3835 break; 3836 default: 3837 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type); 3838 ret = -EINVAL; 3839 goto out_unlock; 3840 } 3841 3842 for (i = 0; i < NUM_PHY_CTX; i++) { 3843 phy_ctxt = &mvm->phy_ctxts[i]; 3844 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt) 3845 continue; 3846 3847 if (phy_ctxt->ref && channel == phy_ctxt->channel) { 3848 /* 3849 * Unbind the P2P_DEVICE from the current PHY context, 3850 * and if the PHY context is not used remove it. 3851 */ 3852 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3853 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3854 goto out_unlock; 3855 3856 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3857 3858 /* Bind the P2P_DEVICE to the current PHY Context */ 3859 mvmvif->phy_ctxt = phy_ctxt; 3860 3861 ret = iwl_mvm_binding_add_vif(mvm, vif); 3862 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3863 goto out_unlock; 3864 3865 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3866 goto schedule_time_event; 3867 } 3868 } 3869 3870 /* Need to update the PHY context only if the ROC channel changed */ 3871 if (channel == mvmvif->phy_ctxt->channel) 3872 goto schedule_time_event; 3873 3874 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT); 3875 3876 /* 3877 * Change the PHY context configuration as it is currently referenced 3878 * only by the P2P Device MAC 3879 */ 3880 if (mvmvif->phy_ctxt->ref == 1) { 3881 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt, 3882 &chandef, 1, 1); 3883 if (ret) 3884 goto out_unlock; 3885 } else { 3886 /* 3887 * The PHY context is shared with other MACs. Need to remove the 3888 * P2P Device from the binding, allocate an new PHY context and 3889 * create a new binding 3890 */ 3891 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3892 if (!phy_ctxt) { 3893 ret = -ENOSPC; 3894 goto out_unlock; 3895 } 3896 3897 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef, 3898 1, 1); 3899 if (ret) { 3900 IWL_ERR(mvm, "Failed to change PHY context\n"); 3901 goto out_unlock; 3902 } 3903 3904 /* Unbind the P2P_DEVICE from the current PHY context */ 3905 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3906 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3907 goto out_unlock; 3908 3909 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3910 3911 /* Bind the P2P_DEVICE to the new allocated PHY context */ 3912 mvmvif->phy_ctxt = phy_ctxt; 3913 3914 ret = iwl_mvm_binding_add_vif(mvm, vif); 3915 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3916 goto out_unlock; 3917 3918 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3919 } 3920 3921 schedule_time_event: 3922 /* Schedule the time events */ 3923 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type); 3924 3925 out_unlock: 3926 mutex_unlock(&mvm->mutex); 3927 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3928 return ret; 3929 } 3930 3931 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw, 3932 struct ieee80211_vif *vif) 3933 { 3934 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3935 3936 IWL_DEBUG_MAC80211(mvm, "enter\n"); 3937 3938 mutex_lock(&mvm->mutex); 3939 iwl_mvm_stop_roc(mvm, vif); 3940 mutex_unlock(&mvm->mutex); 3941 3942 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3943 return 0; 3944 } 3945 3946 struct iwl_mvm_ftm_responder_iter_data { 3947 bool responder; 3948 struct ieee80211_chanctx_conf *ctx; 3949 }; 3950 3951 static void iwl_mvm_ftm_responder_chanctx_iter(void *_data, u8 *mac, 3952 struct ieee80211_vif *vif) 3953 { 3954 struct iwl_mvm_ftm_responder_iter_data *data = _data; 3955 3956 if (rcu_access_pointer(vif->chanctx_conf) == data->ctx && 3957 vif->type == NL80211_IFTYPE_AP && vif->bss_conf.ftmr_params) 3958 data->responder = true; 3959 } 3960 3961 static bool iwl_mvm_is_ftm_responder_chanctx(struct iwl_mvm *mvm, 3962 struct ieee80211_chanctx_conf *ctx) 3963 { 3964 struct iwl_mvm_ftm_responder_iter_data data = { 3965 .responder = false, 3966 .ctx = ctx, 3967 }; 3968 3969 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 3970 IEEE80211_IFACE_ITER_NORMAL, 3971 iwl_mvm_ftm_responder_chanctx_iter, 3972 &data); 3973 return data.responder; 3974 } 3975 3976 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm, 3977 struct ieee80211_chanctx_conf *ctx) 3978 { 3979 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3980 struct iwl_mvm_phy_ctxt *phy_ctxt; 3981 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx); 3982 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def; 3983 int ret; 3984 3985 lockdep_assert_held(&mvm->mutex); 3986 3987 IWL_DEBUG_MAC80211(mvm, "Add channel context\n"); 3988 3989 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3990 if (!phy_ctxt) { 3991 ret = -ENOSPC; 3992 goto out; 3993 } 3994 3995 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def, 3996 ctx->rx_chains_static, 3997 ctx->rx_chains_dynamic); 3998 if (ret) { 3999 IWL_ERR(mvm, "Failed to add PHY context\n"); 4000 goto out; 4001 } 4002 4003 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt); 4004 *phy_ctxt_id = phy_ctxt->id; 4005 out: 4006 return ret; 4007 } 4008 4009 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw, 4010 struct ieee80211_chanctx_conf *ctx) 4011 { 4012 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4013 int ret; 4014 4015 mutex_lock(&mvm->mutex); 4016 ret = __iwl_mvm_add_chanctx(mvm, ctx); 4017 mutex_unlock(&mvm->mutex); 4018 4019 return ret; 4020 } 4021 4022 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm, 4023 struct ieee80211_chanctx_conf *ctx) 4024 { 4025 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4026 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 4027 4028 lockdep_assert_held(&mvm->mutex); 4029 4030 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt); 4031 } 4032 4033 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw, 4034 struct ieee80211_chanctx_conf *ctx) 4035 { 4036 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4037 4038 mutex_lock(&mvm->mutex); 4039 __iwl_mvm_remove_chanctx(mvm, ctx); 4040 mutex_unlock(&mvm->mutex); 4041 } 4042 4043 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw, 4044 struct ieee80211_chanctx_conf *ctx, 4045 u32 changed) 4046 { 4047 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4048 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4049 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 4050 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx); 4051 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def; 4052 4053 if (WARN_ONCE((phy_ctxt->ref > 1) && 4054 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH | 4055 IEEE80211_CHANCTX_CHANGE_RX_CHAINS | 4056 IEEE80211_CHANCTX_CHANGE_RADAR | 4057 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)), 4058 "Cannot change PHY. Ref=%d, changed=0x%X\n", 4059 phy_ctxt->ref, changed)) 4060 return; 4061 4062 mutex_lock(&mvm->mutex); 4063 4064 /* we are only changing the min_width, may be a noop */ 4065 if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) { 4066 if (phy_ctxt->width == def->width) 4067 goto out_unlock; 4068 4069 /* we are just toggling between 20_NOHT and 20 */ 4070 if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 && 4071 def->width <= NL80211_CHAN_WIDTH_20) 4072 goto out_unlock; 4073 } 4074 4075 iwl_mvm_bt_coex_vif_change(mvm); 4076 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def, 4077 ctx->rx_chains_static, 4078 ctx->rx_chains_dynamic); 4079 4080 out_unlock: 4081 mutex_unlock(&mvm->mutex); 4082 } 4083 4084 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm, 4085 struct ieee80211_vif *vif, 4086 struct ieee80211_chanctx_conf *ctx, 4087 bool switching_chanctx) 4088 { 4089 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4090 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 4091 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4092 int ret; 4093 4094 lockdep_assert_held(&mvm->mutex); 4095 4096 mvmvif->phy_ctxt = phy_ctxt; 4097 4098 switch (vif->type) { 4099 case NL80211_IFTYPE_AP: 4100 /* only needed if we're switching chanctx (i.e. during CSA) */ 4101 if (switching_chanctx) { 4102 mvmvif->ap_ibss_active = true; 4103 break; 4104 } 4105 /* fall through */ 4106 case NL80211_IFTYPE_ADHOC: 4107 /* 4108 * The AP binding flow is handled as part of the start_ap flow 4109 * (in bss_info_changed), similarly for IBSS. 4110 */ 4111 ret = 0; 4112 goto out; 4113 case NL80211_IFTYPE_STATION: 4114 mvmvif->csa_bcn_pending = false; 4115 break; 4116 case NL80211_IFTYPE_MONITOR: 4117 /* always disable PS when a monitor interface is active */ 4118 mvmvif->ps_disabled = true; 4119 break; 4120 default: 4121 ret = -EINVAL; 4122 goto out; 4123 } 4124 4125 ret = iwl_mvm_binding_add_vif(mvm, vif); 4126 if (ret) 4127 goto out; 4128 4129 /* 4130 * Power state must be updated before quotas, 4131 * otherwise fw will complain. 4132 */ 4133 iwl_mvm_power_update_mac(mvm); 4134 4135 /* Setting the quota at this stage is only required for monitor 4136 * interfaces. For the other types, the bss_info changed flow 4137 * will handle quota settings. 4138 */ 4139 if (vif->type == NL80211_IFTYPE_MONITOR) { 4140 mvmvif->monitor_active = true; 4141 ret = iwl_mvm_update_quotas(mvm, false, NULL); 4142 if (ret) 4143 goto out_remove_binding; 4144 4145 ret = iwl_mvm_add_snif_sta(mvm, vif); 4146 if (ret) 4147 goto out_remove_binding; 4148 4149 } 4150 4151 /* Handle binding during CSA */ 4152 if (vif->type == NL80211_IFTYPE_AP) { 4153 iwl_mvm_update_quotas(mvm, false, NULL); 4154 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 4155 } 4156 4157 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) { 4158 mvmvif->csa_bcn_pending = true; 4159 4160 if (!fw_has_capa(&mvm->fw->ucode_capa, 4161 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { 4162 u32 duration = 3 * vif->bss_conf.beacon_int; 4163 4164 /* Protect the session to make sure we hear the first 4165 * beacon on the new channel. 4166 */ 4167 iwl_mvm_protect_session(mvm, vif, duration, duration, 4168 vif->bss_conf.beacon_int / 2, 4169 true); 4170 } 4171 4172 iwl_mvm_update_quotas(mvm, false, NULL); 4173 } 4174 4175 goto out; 4176 4177 out_remove_binding: 4178 iwl_mvm_binding_remove_vif(mvm, vif); 4179 iwl_mvm_power_update_mac(mvm); 4180 out: 4181 if (ret) 4182 mvmvif->phy_ctxt = NULL; 4183 return ret; 4184 } 4185 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw, 4186 struct ieee80211_vif *vif, 4187 struct ieee80211_chanctx_conf *ctx) 4188 { 4189 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4190 int ret; 4191 4192 mutex_lock(&mvm->mutex); 4193 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false); 4194 mutex_unlock(&mvm->mutex); 4195 4196 return ret; 4197 } 4198 4199 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm, 4200 struct ieee80211_vif *vif, 4201 struct ieee80211_chanctx_conf *ctx, 4202 bool switching_chanctx) 4203 { 4204 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4205 struct ieee80211_vif *disabled_vif = NULL; 4206 4207 lockdep_assert_held(&mvm->mutex); 4208 4209 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); 4210 4211 switch (vif->type) { 4212 case NL80211_IFTYPE_ADHOC: 4213 goto out; 4214 case NL80211_IFTYPE_MONITOR: 4215 mvmvif->monitor_active = false; 4216 mvmvif->ps_disabled = false; 4217 iwl_mvm_rm_snif_sta(mvm, vif); 4218 break; 4219 case NL80211_IFTYPE_AP: 4220 /* This part is triggered only during CSA */ 4221 if (!switching_chanctx || !mvmvif->ap_ibss_active) 4222 goto out; 4223 4224 mvmvif->csa_countdown = false; 4225 4226 /* Set CS bit on all the stations */ 4227 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true); 4228 4229 /* Save blocked iface, the timeout is set on the next beacon */ 4230 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif); 4231 4232 mvmvif->ap_ibss_active = false; 4233 break; 4234 case NL80211_IFTYPE_STATION: 4235 if (!switching_chanctx) 4236 break; 4237 4238 disabled_vif = vif; 4239 4240 if (!fw_has_capa(&mvm->fw->ucode_capa, 4241 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) 4242 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL); 4243 break; 4244 default: 4245 break; 4246 } 4247 4248 iwl_mvm_update_quotas(mvm, false, disabled_vif); 4249 iwl_mvm_binding_remove_vif(mvm, vif); 4250 4251 out: 4252 mvmvif->phy_ctxt = NULL; 4253 iwl_mvm_power_update_mac(mvm); 4254 } 4255 4256 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, 4257 struct ieee80211_vif *vif, 4258 struct ieee80211_chanctx_conf *ctx) 4259 { 4260 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4261 4262 mutex_lock(&mvm->mutex); 4263 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false); 4264 mutex_unlock(&mvm->mutex); 4265 } 4266 4267 static int 4268 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm, 4269 struct ieee80211_vif_chanctx_switch *vifs) 4270 { 4271 int ret; 4272 4273 mutex_lock(&mvm->mutex); 4274 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 4275 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx); 4276 4277 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx); 4278 if (ret) { 4279 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n"); 4280 goto out_reassign; 4281 } 4282 4283 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 4284 true); 4285 if (ret) { 4286 IWL_ERR(mvm, 4287 "failed to assign new_ctx during channel switch\n"); 4288 goto out_remove; 4289 } 4290 4291 /* we don't support TDLS during DCM - can be caused by channel switch */ 4292 if (iwl_mvm_phy_ctx_count(mvm) > 1) 4293 iwl_mvm_teardown_tdls_peers(mvm); 4294 4295 goto out; 4296 4297 out_remove: 4298 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx); 4299 4300 out_reassign: 4301 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) { 4302 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n"); 4303 goto out_restart; 4304 } 4305 4306 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 4307 true)) { 4308 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 4309 goto out_restart; 4310 } 4311 4312 goto out; 4313 4314 out_restart: 4315 /* things keep failing, better restart the hw */ 4316 iwl_mvm_nic_restart(mvm, false); 4317 4318 out: 4319 mutex_unlock(&mvm->mutex); 4320 4321 return ret; 4322 } 4323 4324 static int 4325 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm, 4326 struct ieee80211_vif_chanctx_switch *vifs) 4327 { 4328 int ret; 4329 4330 mutex_lock(&mvm->mutex); 4331 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 4332 4333 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 4334 true); 4335 if (ret) { 4336 IWL_ERR(mvm, 4337 "failed to assign new_ctx during channel switch\n"); 4338 goto out_reassign; 4339 } 4340 4341 goto out; 4342 4343 out_reassign: 4344 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 4345 true)) { 4346 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 4347 goto out_restart; 4348 } 4349 4350 goto out; 4351 4352 out_restart: 4353 /* things keep failing, better restart the hw */ 4354 iwl_mvm_nic_restart(mvm, false); 4355 4356 out: 4357 mutex_unlock(&mvm->mutex); 4358 4359 return ret; 4360 } 4361 4362 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, 4363 struct ieee80211_vif_chanctx_switch *vifs, 4364 int n_vifs, 4365 enum ieee80211_chanctx_switch_mode mode) 4366 { 4367 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4368 int ret; 4369 4370 /* we only support a single-vif right now */ 4371 if (n_vifs > 1) 4372 return -EOPNOTSUPP; 4373 4374 switch (mode) { 4375 case CHANCTX_SWMODE_SWAP_CONTEXTS: 4376 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs); 4377 break; 4378 case CHANCTX_SWMODE_REASSIGN_VIF: 4379 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs); 4380 break; 4381 default: 4382 ret = -EOPNOTSUPP; 4383 break; 4384 } 4385 4386 return ret; 4387 } 4388 4389 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw) 4390 { 4391 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4392 4393 return mvm->ibss_manager; 4394 } 4395 4396 static int iwl_mvm_set_tim(struct ieee80211_hw *hw, 4397 struct ieee80211_sta *sta, 4398 bool set) 4399 { 4400 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4401 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4402 4403 if (!mvm_sta || !mvm_sta->vif) { 4404 IWL_ERR(mvm, "Station is not associated to a vif\n"); 4405 return -EINVAL; 4406 } 4407 4408 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif); 4409 } 4410 4411 #ifdef CONFIG_NL80211_TESTMODE 4412 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = { 4413 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 }, 4414 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 }, 4415 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 }, 4416 }; 4417 4418 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm, 4419 struct ieee80211_vif *vif, 4420 void *data, int len) 4421 { 4422 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1]; 4423 int err; 4424 u32 noa_duration; 4425 4426 err = nla_parse_deprecated(tb, IWL_MVM_TM_ATTR_MAX, data, len, 4427 iwl_mvm_tm_policy, NULL); 4428 if (err) 4429 return err; 4430 4431 if (!tb[IWL_MVM_TM_ATTR_CMD]) 4432 return -EINVAL; 4433 4434 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) { 4435 case IWL_MVM_TM_CMD_SET_NOA: 4436 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p || 4437 !vif->bss_conf.enable_beacon || 4438 !tb[IWL_MVM_TM_ATTR_NOA_DURATION]) 4439 return -EINVAL; 4440 4441 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]); 4442 if (noa_duration >= vif->bss_conf.beacon_int) 4443 return -EINVAL; 4444 4445 mvm->noa_duration = noa_duration; 4446 mvm->noa_vif = vif; 4447 4448 return iwl_mvm_update_quotas(mvm, true, NULL); 4449 case IWL_MVM_TM_CMD_SET_BEACON_FILTER: 4450 /* must be associated client vif - ignore authorized */ 4451 if (!vif || vif->type != NL80211_IFTYPE_STATION || 4452 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period || 4453 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]) 4454 return -EINVAL; 4455 4456 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])) 4457 return iwl_mvm_enable_beacon_filter(mvm, vif, 0); 4458 return iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4459 } 4460 4461 return -EOPNOTSUPP; 4462 } 4463 4464 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw, 4465 struct ieee80211_vif *vif, 4466 void *data, int len) 4467 { 4468 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4469 int err; 4470 4471 mutex_lock(&mvm->mutex); 4472 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len); 4473 mutex_unlock(&mvm->mutex); 4474 4475 return err; 4476 } 4477 #endif 4478 4479 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw, 4480 struct ieee80211_vif *vif, 4481 struct ieee80211_channel_switch *chsw) 4482 { 4483 /* By implementing this operation, we prevent mac80211 from 4484 * starting its own channel switch timer, so that we can call 4485 * ieee80211_chswitch_done() ourselves at the right time 4486 * (which is when the absence time event starts). 4487 */ 4488 4489 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw), 4490 "dummy channel switch op\n"); 4491 } 4492 4493 static int iwl_mvm_schedule_client_csa(struct iwl_mvm *mvm, 4494 struct ieee80211_vif *vif, 4495 struct ieee80211_channel_switch *chsw) 4496 { 4497 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4498 struct iwl_chan_switch_te_cmd cmd = { 4499 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 4500 mvmvif->color)), 4501 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 4502 .tsf = cpu_to_le32(chsw->timestamp), 4503 .cs_count = chsw->count, 4504 .cs_mode = chsw->block_tx, 4505 }; 4506 4507 lockdep_assert_held(&mvm->mutex); 4508 4509 if (chsw->delay) 4510 cmd.cs_delayed_bcn_count = 4511 DIV_ROUND_UP(chsw->delay, vif->bss_conf.beacon_int); 4512 4513 return iwl_mvm_send_cmd_pdu(mvm, 4514 WIDE_ID(MAC_CONF_GROUP, 4515 CHANNEL_SWITCH_TIME_EVENT_CMD), 4516 0, sizeof(cmd), &cmd); 4517 } 4518 4519 static int iwl_mvm_old_pre_chan_sw_sta(struct iwl_mvm *mvm, 4520 struct ieee80211_vif *vif, 4521 struct ieee80211_channel_switch *chsw) 4522 { 4523 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4524 u32 apply_time; 4525 4526 /* Schedule the time event to a bit before beacon 1, 4527 * to make sure we're in the new channel when the 4528 * GO/AP arrives. In case count <= 1 immediately schedule the 4529 * TE (this might result with some packet loss or connection 4530 * loss). 4531 */ 4532 if (chsw->count <= 1) 4533 apply_time = 0; 4534 else 4535 apply_time = chsw->device_timestamp + 4536 ((vif->bss_conf.beacon_int * (chsw->count - 1) - 4537 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024); 4538 4539 if (chsw->block_tx) 4540 iwl_mvm_csa_client_absent(mvm, vif); 4541 4542 if (mvmvif->bf_data.bf_enabled) { 4543 int ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4544 4545 if (ret) 4546 return ret; 4547 } 4548 4549 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int, 4550 apply_time); 4551 4552 return 0; 4553 } 4554 4555 #define IWL_MAX_CSA_BLOCK_TX 1500 4556 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, 4557 struct ieee80211_vif *vif, 4558 struct ieee80211_channel_switch *chsw) 4559 { 4560 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4561 struct ieee80211_vif *csa_vif; 4562 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4563 int ret; 4564 4565 mutex_lock(&mvm->mutex); 4566 4567 mvmvif->csa_failed = false; 4568 4569 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n", 4570 chsw->chandef.center_freq1); 4571 4572 iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt, 4573 ieee80211_vif_to_wdev(vif), 4574 FW_DBG_TRIGGER_CHANNEL_SWITCH); 4575 4576 switch (vif->type) { 4577 case NL80211_IFTYPE_AP: 4578 csa_vif = 4579 rcu_dereference_protected(mvm->csa_vif, 4580 lockdep_is_held(&mvm->mutex)); 4581 if (WARN_ONCE(csa_vif && csa_vif->csa_active, 4582 "Another CSA is already in progress")) { 4583 ret = -EBUSY; 4584 goto out_unlock; 4585 } 4586 4587 /* we still didn't unblock tx. prevent new CS meanwhile */ 4588 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif, 4589 lockdep_is_held(&mvm->mutex))) { 4590 ret = -EBUSY; 4591 goto out_unlock; 4592 } 4593 4594 rcu_assign_pointer(mvm->csa_vif, vif); 4595 4596 if (WARN_ONCE(mvmvif->csa_countdown, 4597 "Previous CSA countdown didn't complete")) { 4598 ret = -EBUSY; 4599 goto out_unlock; 4600 } 4601 4602 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq; 4603 4604 break; 4605 case NL80211_IFTYPE_STATION: 4606 if (chsw->block_tx) { 4607 /* 4608 * In case of undetermined / long time with immediate 4609 * quiet monitor status to gracefully disconnect 4610 */ 4611 if (!chsw->count || 4612 chsw->count * vif->bss_conf.beacon_int > 4613 IWL_MAX_CSA_BLOCK_TX) 4614 schedule_delayed_work(&mvmvif->csa_work, 4615 msecs_to_jiffies(IWL_MAX_CSA_BLOCK_TX)); 4616 } 4617 4618 if (!fw_has_capa(&mvm->fw->ucode_capa, 4619 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { 4620 ret = iwl_mvm_old_pre_chan_sw_sta(mvm, vif, chsw); 4621 if (ret) 4622 goto out_unlock; 4623 } else { 4624 iwl_mvm_schedule_client_csa(mvm, vif, chsw); 4625 } 4626 4627 mvmvif->csa_count = chsw->count; 4628 mvmvif->csa_misbehave = false; 4629 break; 4630 default: 4631 break; 4632 } 4633 4634 mvmvif->ps_disabled = true; 4635 4636 ret = iwl_mvm_power_update_ps(mvm); 4637 if (ret) 4638 goto out_unlock; 4639 4640 /* we won't be on this channel any longer */ 4641 iwl_mvm_teardown_tdls_peers(mvm); 4642 4643 out_unlock: 4644 mutex_unlock(&mvm->mutex); 4645 4646 return ret; 4647 } 4648 4649 static void iwl_mvm_channel_switch_rx_beacon(struct ieee80211_hw *hw, 4650 struct ieee80211_vif *vif, 4651 struct ieee80211_channel_switch *chsw) 4652 { 4653 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4654 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4655 struct iwl_chan_switch_te_cmd cmd = { 4656 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 4657 mvmvif->color)), 4658 .action = cpu_to_le32(FW_CTXT_ACTION_MODIFY), 4659 .tsf = cpu_to_le32(chsw->timestamp), 4660 .cs_count = chsw->count, 4661 .cs_mode = chsw->block_tx, 4662 }; 4663 4664 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CS_MODIFY)) 4665 return; 4666 4667 if (chsw->count >= mvmvif->csa_count && chsw->block_tx) { 4668 if (mvmvif->csa_misbehave) { 4669 /* Second time, give up on this AP*/ 4670 iwl_mvm_abort_channel_switch(hw, vif); 4671 ieee80211_chswitch_done(vif, false); 4672 mvmvif->csa_misbehave = false; 4673 return; 4674 } 4675 mvmvif->csa_misbehave = true; 4676 } 4677 mvmvif->csa_count = chsw->count; 4678 4679 IWL_DEBUG_MAC80211(mvm, "Modify CSA on mac %d\n", mvmvif->id); 4680 4681 WARN_ON(iwl_mvm_send_cmd_pdu(mvm, 4682 WIDE_ID(MAC_CONF_GROUP, 4683 CHANNEL_SWITCH_TIME_EVENT_CMD), 4684 CMD_ASYNC, sizeof(cmd), &cmd)); 4685 } 4686 4687 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop) 4688 { 4689 int i; 4690 4691 if (!iwl_mvm_has_new_tx_api(mvm)) { 4692 if (drop) { 4693 mutex_lock(&mvm->mutex); 4694 iwl_mvm_flush_tx_path(mvm, 4695 iwl_mvm_flushable_queues(mvm) & queues, 0); 4696 mutex_unlock(&mvm->mutex); 4697 } else { 4698 iwl_trans_wait_tx_queues_empty(mvm->trans, queues); 4699 } 4700 return; 4701 } 4702 4703 mutex_lock(&mvm->mutex); 4704 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 4705 struct ieee80211_sta *sta; 4706 4707 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4708 lockdep_is_held(&mvm->mutex)); 4709 if (IS_ERR_OR_NULL(sta)) 4710 continue; 4711 4712 if (drop) 4713 iwl_mvm_flush_sta_tids(mvm, i, 0xFFFF, 0); 4714 else 4715 iwl_mvm_wait_sta_queues_empty(mvm, 4716 iwl_mvm_sta_from_mac80211(sta)); 4717 } 4718 mutex_unlock(&mvm->mutex); 4719 } 4720 4721 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw, 4722 struct ieee80211_vif *vif, u32 queues, bool drop) 4723 { 4724 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4725 struct iwl_mvm_vif *mvmvif; 4726 struct iwl_mvm_sta *mvmsta; 4727 struct ieee80211_sta *sta; 4728 int i; 4729 u32 msk = 0; 4730 4731 if (!vif) { 4732 iwl_mvm_flush_no_vif(mvm, queues, drop); 4733 return; 4734 } 4735 4736 if (vif->type != NL80211_IFTYPE_STATION) 4737 return; 4738 4739 /* Make sure we're done with the deferred traffic before flushing */ 4740 flush_work(&mvm->add_stream_wk); 4741 4742 mutex_lock(&mvm->mutex); 4743 mvmvif = iwl_mvm_vif_from_mac80211(vif); 4744 4745 /* flush the AP-station and all TDLS peers */ 4746 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 4747 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4748 lockdep_is_held(&mvm->mutex)); 4749 if (IS_ERR_OR_NULL(sta)) 4750 continue; 4751 4752 mvmsta = iwl_mvm_sta_from_mac80211(sta); 4753 if (mvmsta->vif != vif) 4754 continue; 4755 4756 /* make sure only TDLS peers or the AP are flushed */ 4757 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls); 4758 4759 if (drop) { 4760 if (iwl_mvm_flush_sta(mvm, mvmsta, false)) 4761 IWL_ERR(mvm, "flush request fail\n"); 4762 } else { 4763 msk |= mvmsta->tfd_queue_msk; 4764 if (iwl_mvm_has_new_tx_api(mvm)) 4765 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta); 4766 } 4767 } 4768 4769 mutex_unlock(&mvm->mutex); 4770 4771 /* this can take a while, and we may need/want other operations 4772 * to succeed while doing this, so do it without the mutex held 4773 */ 4774 if (!drop && !iwl_mvm_has_new_tx_api(mvm)) 4775 iwl_trans_wait_tx_queues_empty(mvm->trans, msk); 4776 } 4777 4778 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx, 4779 struct survey_info *survey) 4780 { 4781 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4782 int ret; 4783 4784 memset(survey, 0, sizeof(*survey)); 4785 4786 /* only support global statistics right now */ 4787 if (idx != 0) 4788 return -ENOENT; 4789 4790 if (!fw_has_capa(&mvm->fw->ucode_capa, 4791 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4792 return -ENOENT; 4793 4794 mutex_lock(&mvm->mutex); 4795 4796 if (iwl_mvm_firmware_running(mvm)) { 4797 ret = iwl_mvm_request_statistics(mvm, false); 4798 if (ret) 4799 goto out; 4800 } 4801 4802 survey->filled = SURVEY_INFO_TIME | 4803 SURVEY_INFO_TIME_RX | 4804 SURVEY_INFO_TIME_TX | 4805 SURVEY_INFO_TIME_SCAN; 4806 survey->time = mvm->accu_radio_stats.on_time_rf + 4807 mvm->radio_stats.on_time_rf; 4808 do_div(survey->time, USEC_PER_MSEC); 4809 4810 survey->time_rx = mvm->accu_radio_stats.rx_time + 4811 mvm->radio_stats.rx_time; 4812 do_div(survey->time_rx, USEC_PER_MSEC); 4813 4814 survey->time_tx = mvm->accu_radio_stats.tx_time + 4815 mvm->radio_stats.tx_time; 4816 do_div(survey->time_tx, USEC_PER_MSEC); 4817 4818 survey->time_scan = mvm->accu_radio_stats.on_time_scan + 4819 mvm->radio_stats.on_time_scan; 4820 do_div(survey->time_scan, USEC_PER_MSEC); 4821 4822 ret = 0; 4823 out: 4824 mutex_unlock(&mvm->mutex); 4825 return ret; 4826 } 4827 4828 static void iwl_mvm_set_sta_rate(u32 rate_n_flags, struct rate_info *rinfo) 4829 { 4830 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { 4831 case RATE_MCS_CHAN_WIDTH_20: 4832 rinfo->bw = RATE_INFO_BW_20; 4833 break; 4834 case RATE_MCS_CHAN_WIDTH_40: 4835 rinfo->bw = RATE_INFO_BW_40; 4836 break; 4837 case RATE_MCS_CHAN_WIDTH_80: 4838 rinfo->bw = RATE_INFO_BW_80; 4839 break; 4840 case RATE_MCS_CHAN_WIDTH_160: 4841 rinfo->bw = RATE_INFO_BW_160; 4842 break; 4843 } 4844 4845 if (rate_n_flags & RATE_MCS_HT_MSK) { 4846 rinfo->flags |= RATE_INFO_FLAGS_MCS; 4847 rinfo->mcs = u32_get_bits(rate_n_flags, RATE_HT_MCS_INDEX_MSK); 4848 rinfo->nss = u32_get_bits(rate_n_flags, 4849 RATE_HT_MCS_NSS_MSK) + 1; 4850 if (rate_n_flags & RATE_MCS_SGI_MSK) 4851 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 4852 } else if (rate_n_flags & RATE_MCS_VHT_MSK) { 4853 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 4854 rinfo->mcs = u32_get_bits(rate_n_flags, 4855 RATE_VHT_MCS_RATE_CODE_MSK); 4856 rinfo->nss = u32_get_bits(rate_n_flags, 4857 RATE_VHT_MCS_NSS_MSK) + 1; 4858 if (rate_n_flags & RATE_MCS_SGI_MSK) 4859 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 4860 } else if (rate_n_flags & RATE_MCS_HE_MSK) { 4861 u32 gi_ltf = u32_get_bits(rate_n_flags, 4862 RATE_MCS_HE_GI_LTF_MSK); 4863 4864 rinfo->flags |= RATE_INFO_FLAGS_HE_MCS; 4865 rinfo->mcs = u32_get_bits(rate_n_flags, 4866 RATE_VHT_MCS_RATE_CODE_MSK); 4867 rinfo->nss = u32_get_bits(rate_n_flags, 4868 RATE_VHT_MCS_NSS_MSK) + 1; 4869 4870 if (rate_n_flags & RATE_MCS_HE_106T_MSK) { 4871 rinfo->bw = RATE_INFO_BW_HE_RU; 4872 rinfo->he_ru_alloc = NL80211_RATE_INFO_HE_RU_ALLOC_106; 4873 } 4874 4875 switch (rate_n_flags & RATE_MCS_HE_TYPE_MSK) { 4876 case RATE_MCS_HE_TYPE_SU: 4877 case RATE_MCS_HE_TYPE_EXT_SU: 4878 if (gi_ltf == 0 || gi_ltf == 1) 4879 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; 4880 else if (gi_ltf == 2) 4881 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; 4882 else if (rate_n_flags & RATE_MCS_SGI_MSK) 4883 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; 4884 else 4885 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; 4886 break; 4887 case RATE_MCS_HE_TYPE_MU: 4888 if (gi_ltf == 0 || gi_ltf == 1) 4889 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; 4890 else if (gi_ltf == 2) 4891 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; 4892 else 4893 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; 4894 break; 4895 case RATE_MCS_HE_TYPE_TRIG: 4896 if (gi_ltf == 0 || gi_ltf == 1) 4897 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; 4898 else 4899 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; 4900 break; 4901 } 4902 4903 if (rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK) 4904 rinfo->he_dcm = 1; 4905 } else { 4906 switch (u32_get_bits(rate_n_flags, RATE_LEGACY_RATE_MSK)) { 4907 case IWL_RATE_1M_PLCP: 4908 rinfo->legacy = 10; 4909 break; 4910 case IWL_RATE_2M_PLCP: 4911 rinfo->legacy = 20; 4912 break; 4913 case IWL_RATE_5M_PLCP: 4914 rinfo->legacy = 55; 4915 break; 4916 case IWL_RATE_11M_PLCP: 4917 rinfo->legacy = 110; 4918 break; 4919 case IWL_RATE_6M_PLCP: 4920 rinfo->legacy = 60; 4921 break; 4922 case IWL_RATE_9M_PLCP: 4923 rinfo->legacy = 90; 4924 break; 4925 case IWL_RATE_12M_PLCP: 4926 rinfo->legacy = 120; 4927 break; 4928 case IWL_RATE_18M_PLCP: 4929 rinfo->legacy = 180; 4930 break; 4931 case IWL_RATE_24M_PLCP: 4932 rinfo->legacy = 240; 4933 break; 4934 case IWL_RATE_36M_PLCP: 4935 rinfo->legacy = 360; 4936 break; 4937 case IWL_RATE_48M_PLCP: 4938 rinfo->legacy = 480; 4939 break; 4940 case IWL_RATE_54M_PLCP: 4941 rinfo->legacy = 540; 4942 break; 4943 } 4944 } 4945 } 4946 4947 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw, 4948 struct ieee80211_vif *vif, 4949 struct ieee80211_sta *sta, 4950 struct station_info *sinfo) 4951 { 4952 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4953 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4954 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4955 4956 if (mvmsta->avg_energy) { 4957 sinfo->signal_avg = -(s8)mvmsta->avg_energy; 4958 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); 4959 } 4960 4961 if (iwl_mvm_has_tlc_offload(mvm)) { 4962 struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw; 4963 4964 iwl_mvm_set_sta_rate(lq_sta->last_rate_n_flags, &sinfo->txrate); 4965 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE); 4966 } 4967 4968 /* if beacon filtering isn't on mac80211 does it anyway */ 4969 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER)) 4970 return; 4971 4972 if (!vif->bss_conf.assoc) 4973 return; 4974 4975 mutex_lock(&mvm->mutex); 4976 4977 if (mvmvif->ap_sta_id != mvmsta->sta_id) 4978 goto unlock; 4979 4980 if (iwl_mvm_request_statistics(mvm, false)) 4981 goto unlock; 4982 4983 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons + 4984 mvmvif->beacon_stats.accu_num_beacons; 4985 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX); 4986 if (mvmvif->beacon_stats.avg_signal) { 4987 /* firmware only reports a value after RXing a few beacons */ 4988 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal; 4989 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG); 4990 } 4991 unlock: 4992 mutex_unlock(&mvm->mutex); 4993 } 4994 4995 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm, 4996 struct ieee80211_vif *vif, 4997 const struct ieee80211_event *event) 4998 { 4999 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \ 5000 do { \ 5001 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \ 5002 break; \ 5003 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt); \ 5004 } while (0) 5005 5006 struct iwl_fw_dbg_trigger_tlv *trig; 5007 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 5008 5009 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 5010 FW_DBG_TRIGGER_MLME); 5011 if (!trig) 5012 return; 5013 5014 trig_mlme = (void *)trig->data; 5015 5016 if (event->u.mlme.data == ASSOC_EVENT) { 5017 if (event->u.mlme.status == MLME_DENIED) 5018 CHECK_MLME_TRIGGER(stop_assoc_denied, 5019 "DENIED ASSOC: reason %d", 5020 event->u.mlme.reason); 5021 else if (event->u.mlme.status == MLME_TIMEOUT) 5022 CHECK_MLME_TRIGGER(stop_assoc_timeout, 5023 "ASSOC TIMEOUT"); 5024 } else if (event->u.mlme.data == AUTH_EVENT) { 5025 if (event->u.mlme.status == MLME_DENIED) 5026 CHECK_MLME_TRIGGER(stop_auth_denied, 5027 "DENIED AUTH: reason %d", 5028 event->u.mlme.reason); 5029 else if (event->u.mlme.status == MLME_TIMEOUT) 5030 CHECK_MLME_TRIGGER(stop_auth_timeout, 5031 "AUTH TIMEOUT"); 5032 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) { 5033 CHECK_MLME_TRIGGER(stop_rx_deauth, 5034 "DEAUTH RX %d", event->u.mlme.reason); 5035 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) { 5036 CHECK_MLME_TRIGGER(stop_tx_deauth, 5037 "DEAUTH TX %d", event->u.mlme.reason); 5038 } 5039 #undef CHECK_MLME_TRIGGER 5040 } 5041 5042 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm, 5043 struct ieee80211_vif *vif, 5044 const struct ieee80211_event *event) 5045 { 5046 struct iwl_fw_dbg_trigger_tlv *trig; 5047 struct iwl_fw_dbg_trigger_ba *ba_trig; 5048 5049 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 5050 FW_DBG_TRIGGER_BA); 5051 if (!trig) 5052 return; 5053 5054 ba_trig = (void *)trig->data; 5055 5056 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid))) 5057 return; 5058 5059 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 5060 "BAR received from %pM, tid %d, ssn %d", 5061 event->u.ba.sta->addr, event->u.ba.tid, 5062 event->u.ba.ssn); 5063 } 5064 5065 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw, 5066 struct ieee80211_vif *vif, 5067 const struct ieee80211_event *event) 5068 { 5069 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5070 5071 switch (event->type) { 5072 case MLME_EVENT: 5073 iwl_mvm_event_mlme_callback(mvm, vif, event); 5074 break; 5075 case BAR_RX_EVENT: 5076 iwl_mvm_event_bar_rx_callback(mvm, vif, event); 5077 break; 5078 case BA_FRAME_TIMEOUT: 5079 iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta, 5080 event->u.ba.tid); 5081 break; 5082 default: 5083 break; 5084 } 5085 } 5086 5087 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm, 5088 struct iwl_mvm_internal_rxq_notif *notif, 5089 u32 size) 5090 { 5091 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1; 5092 int ret; 5093 5094 5095 if (!iwl_mvm_has_new_rx_api(mvm)) 5096 return; 5097 5098 if (notif->sync) { 5099 notif->cookie = mvm->queue_sync_cookie; 5100 atomic_set(&mvm->queue_sync_counter, 5101 mvm->trans->num_rx_queues); 5102 } 5103 5104 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, 5105 size, !notif->sync); 5106 if (ret) { 5107 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret); 5108 goto out; 5109 } 5110 5111 if (notif->sync) { 5112 lockdep_assert_held(&mvm->mutex); 5113 ret = wait_event_timeout(mvm->rx_sync_waitq, 5114 atomic_read(&mvm->queue_sync_counter) == 0 || 5115 iwl_mvm_is_radio_killed(mvm), 5116 HZ); 5117 WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm)); 5118 } 5119 5120 out: 5121 atomic_set(&mvm->queue_sync_counter, 0); 5122 if (notif->sync) 5123 mvm->queue_sync_cookie++; 5124 } 5125 5126 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw) 5127 { 5128 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5129 struct iwl_mvm_internal_rxq_notif data = { 5130 .type = IWL_MVM_RXQ_EMPTY, 5131 .sync = 1, 5132 }; 5133 5134 mutex_lock(&mvm->mutex); 5135 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data)); 5136 mutex_unlock(&mvm->mutex); 5137 } 5138 5139 static int 5140 iwl_mvm_mac_get_ftm_responder_stats(struct ieee80211_hw *hw, 5141 struct ieee80211_vif *vif, 5142 struct cfg80211_ftm_responder_stats *stats) 5143 { 5144 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5145 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 5146 5147 if (vif->p2p || vif->type != NL80211_IFTYPE_AP || 5148 !mvmvif->ap_ibss_active || !vif->bss_conf.ftm_responder) 5149 return -EINVAL; 5150 5151 mutex_lock(&mvm->mutex); 5152 *stats = mvm->ftm_resp_stats; 5153 mutex_unlock(&mvm->mutex); 5154 5155 stats->filled = BIT(NL80211_FTM_STATS_SUCCESS_NUM) | 5156 BIT(NL80211_FTM_STATS_PARTIAL_NUM) | 5157 BIT(NL80211_FTM_STATS_FAILED_NUM) | 5158 BIT(NL80211_FTM_STATS_ASAP_NUM) | 5159 BIT(NL80211_FTM_STATS_NON_ASAP_NUM) | 5160 BIT(NL80211_FTM_STATS_TOTAL_DURATION_MSEC) | 5161 BIT(NL80211_FTM_STATS_UNKNOWN_TRIGGERS_NUM) | 5162 BIT(NL80211_FTM_STATS_RESCHEDULE_REQUESTS_NUM) | 5163 BIT(NL80211_FTM_STATS_OUT_OF_WINDOW_TRIGGERS_NUM); 5164 5165 return 0; 5166 } 5167 5168 static int iwl_mvm_start_pmsr(struct ieee80211_hw *hw, 5169 struct ieee80211_vif *vif, 5170 struct cfg80211_pmsr_request *request) 5171 { 5172 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5173 int ret; 5174 5175 mutex_lock(&mvm->mutex); 5176 ret = iwl_mvm_ftm_start(mvm, vif, request); 5177 mutex_unlock(&mvm->mutex); 5178 5179 return ret; 5180 } 5181 5182 static void iwl_mvm_abort_pmsr(struct ieee80211_hw *hw, 5183 struct ieee80211_vif *vif, 5184 struct cfg80211_pmsr_request *request) 5185 { 5186 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5187 5188 mutex_lock(&mvm->mutex); 5189 iwl_mvm_ftm_abort(mvm, request); 5190 mutex_unlock(&mvm->mutex); 5191 } 5192 5193 static bool iwl_mvm_can_hw_csum(struct sk_buff *skb) 5194 { 5195 u8 protocol = ip_hdr(skb)->protocol; 5196 5197 if (!IS_ENABLED(CONFIG_INET)) 5198 return false; 5199 5200 return protocol == IPPROTO_TCP || protocol == IPPROTO_UDP; 5201 } 5202 5203 static bool iwl_mvm_mac_can_aggregate(struct ieee80211_hw *hw, 5204 struct sk_buff *head, 5205 struct sk_buff *skb) 5206 { 5207 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5208 5209 /* For now don't aggregate IPv6 in AMSDU */ 5210 if (skb->protocol != htons(ETH_P_IP)) 5211 return false; 5212 5213 if (!iwl_mvm_is_csum_supported(mvm)) 5214 return true; 5215 5216 return iwl_mvm_can_hw_csum(skb) == iwl_mvm_can_hw_csum(head); 5217 } 5218 5219 const struct ieee80211_ops iwl_mvm_hw_ops = { 5220 .tx = iwl_mvm_mac_tx, 5221 .wake_tx_queue = iwl_mvm_mac_wake_tx_queue, 5222 .ampdu_action = iwl_mvm_mac_ampdu_action, 5223 .get_antenna = iwl_mvm_op_get_antenna, 5224 .start = iwl_mvm_mac_start, 5225 .reconfig_complete = iwl_mvm_mac_reconfig_complete, 5226 .stop = iwl_mvm_mac_stop, 5227 .add_interface = iwl_mvm_mac_add_interface, 5228 .remove_interface = iwl_mvm_mac_remove_interface, 5229 .config = iwl_mvm_mac_config, 5230 .prepare_multicast = iwl_mvm_prepare_multicast, 5231 .configure_filter = iwl_mvm_configure_filter, 5232 .config_iface_filter = iwl_mvm_config_iface_filter, 5233 .bss_info_changed = iwl_mvm_bss_info_changed, 5234 .hw_scan = iwl_mvm_mac_hw_scan, 5235 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan, 5236 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove, 5237 .sta_state = iwl_mvm_mac_sta_state, 5238 .sta_notify = iwl_mvm_mac_sta_notify, 5239 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames, 5240 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames, 5241 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold, 5242 .sta_rc_update = iwl_mvm_sta_rc_update, 5243 .conf_tx = iwl_mvm_mac_conf_tx, 5244 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx, 5245 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover, 5246 .flush = iwl_mvm_mac_flush, 5247 .sched_scan_start = iwl_mvm_mac_sched_scan_start, 5248 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop, 5249 .set_key = iwl_mvm_mac_set_key, 5250 .update_tkip_key = iwl_mvm_mac_update_tkip_key, 5251 .remain_on_channel = iwl_mvm_roc, 5252 .cancel_remain_on_channel = iwl_mvm_cancel_roc, 5253 .add_chanctx = iwl_mvm_add_chanctx, 5254 .remove_chanctx = iwl_mvm_remove_chanctx, 5255 .change_chanctx = iwl_mvm_change_chanctx, 5256 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx, 5257 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx, 5258 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx, 5259 5260 .start_ap = iwl_mvm_start_ap_ibss, 5261 .stop_ap = iwl_mvm_stop_ap_ibss, 5262 .join_ibss = iwl_mvm_start_ap_ibss, 5263 .leave_ibss = iwl_mvm_stop_ap_ibss, 5264 5265 .tx_last_beacon = iwl_mvm_tx_last_beacon, 5266 5267 .set_tim = iwl_mvm_set_tim, 5268 5269 .channel_switch = iwl_mvm_channel_switch, 5270 .pre_channel_switch = iwl_mvm_pre_channel_switch, 5271 .post_channel_switch = iwl_mvm_post_channel_switch, 5272 .abort_channel_switch = iwl_mvm_abort_channel_switch, 5273 .channel_switch_rx_beacon = iwl_mvm_channel_switch_rx_beacon, 5274 5275 .tdls_channel_switch = iwl_mvm_tdls_channel_switch, 5276 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch, 5277 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch, 5278 5279 .event_callback = iwl_mvm_mac_event_callback, 5280 5281 .sync_rx_queues = iwl_mvm_sync_rx_queues, 5282 5283 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd) 5284 5285 #ifdef CONFIG_PM_SLEEP 5286 /* look at d3.c */ 5287 .suspend = iwl_mvm_suspend, 5288 .resume = iwl_mvm_resume, 5289 .set_wakeup = iwl_mvm_set_wakeup, 5290 .set_rekey_data = iwl_mvm_set_rekey_data, 5291 #if IS_ENABLED(CONFIG_IPV6) 5292 .ipv6_addr_change = iwl_mvm_ipv6_addr_change, 5293 #endif 5294 .set_default_unicast_key = iwl_mvm_set_default_unicast_key, 5295 #endif 5296 .get_survey = iwl_mvm_mac_get_survey, 5297 .sta_statistics = iwl_mvm_mac_sta_statistics, 5298 .get_ftm_responder_stats = iwl_mvm_mac_get_ftm_responder_stats, 5299 .start_pmsr = iwl_mvm_start_pmsr, 5300 .abort_pmsr = iwl_mvm_abort_pmsr, 5301 5302 .can_aggregate_in_amsdu = iwl_mvm_mac_can_aggregate, 5303 #ifdef CONFIG_IWLWIFI_DEBUGFS 5304 .sta_add_debugfs = iwl_mvm_sta_add_debugfs, 5305 #endif 5306 }; 5307